diff options
Diffstat (limited to 'kernel/drivers/scsi/lpfc/lpfc_sli.c')
| -rw-r--r-- | kernel/drivers/scsi/lpfc/lpfc_sli.c | 17060 |
1 files changed, 17060 insertions, 0 deletions
diff --git a/kernel/drivers/scsi/lpfc/lpfc_sli.c b/kernel/drivers/scsi/lpfc/lpfc_sli.c new file mode 100644 index 000000000..56f73682d --- /dev/null +++ b/kernel/drivers/scsi/lpfc/lpfc_sli.c @@ -0,0 +1,17060 @@ +/******************************************************************* + * This file is part of the Emulex Linux Device Driver for * + * Fibre Channel Host Bus Adapters. * + * Copyright (C) 2004-2015 Emulex. All rights reserved. * + * EMULEX and SLI are trademarks of Emulex. * + * www.emulex.com * + * Portions Copyright (C) 2004-2005 Christoph Hellwig * + * * + * This program is free software; you can redistribute it and/or * + * modify it under the terms of version 2 of the GNU General * + * Public License as published by the Free Software Foundation. * + * This program is distributed in the hope that it will be useful. * + * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * + * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * + * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * + * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * + * TO BE LEGALLY INVALID. See the GNU General Public License for * + * more details, a copy of which can be found in the file COPYING * + * included with this package. * + *******************************************************************/ + +#include <linux/blkdev.h> +#include <linux/pci.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/slab.h> + +#include <scsi/scsi.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_device.h> +#include <scsi/scsi_host.h> +#include <scsi/scsi_transport_fc.h> +#include <scsi/fc/fc_fs.h> +#include <linux/aer.h> + +#include "lpfc_hw4.h" +#include "lpfc_hw.h" +#include "lpfc_sli.h" +#include "lpfc_sli4.h" +#include "lpfc_nl.h" +#include "lpfc_disc.h" +#include "lpfc_scsi.h" +#include "lpfc.h" +#include "lpfc_crtn.h" +#include "lpfc_logmsg.h" +#include "lpfc_compat.h" +#include "lpfc_debugfs.h" +#include "lpfc_vport.h" + +/* There are only four IOCB completion types. */ +typedef enum _lpfc_iocb_type { + LPFC_UNKNOWN_IOCB, + LPFC_UNSOL_IOCB, + LPFC_SOL_IOCB, + LPFC_ABORT_IOCB +} lpfc_iocb_type; + + +/* Provide function prototypes local to this module. */ +static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *, + uint32_t); +static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *, + uint8_t *, uint32_t *); +static struct lpfc_iocbq *lpfc_sli4_els_wcqe_to_rspiocbq(struct lpfc_hba *, + struct lpfc_iocbq *); +static void lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *, + struct hbq_dmabuf *); +static int lpfc_sli4_fp_handle_wcqe(struct lpfc_hba *, struct lpfc_queue *, + struct lpfc_cqe *); +static int lpfc_sli4_post_els_sgl_list(struct lpfc_hba *, struct list_head *, + int); +static void lpfc_sli4_hba_handle_eqe(struct lpfc_hba *, struct lpfc_eqe *, + uint32_t); +static bool lpfc_sli4_mbox_completions_pending(struct lpfc_hba *phba); +static bool lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba); + +static IOCB_t * +lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq) +{ + return &iocbq->iocb; +} + +/** + * lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue + * @q: The Work Queue to operate on. + * @wqe: The work Queue Entry to put on the Work queue. + * + * This routine will copy the contents of @wqe to the next available entry on + * the @q. This function will then ring the Work Queue Doorbell to signal the + * HBA to start processing the Work Queue Entry. This function returns 0 if + * successful. If no entries are available on @q then this function will return + * -ENOMEM. + * The caller is expected to hold the hbalock when calling this routine. + **/ +static uint32_t +lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe) +{ + union lpfc_wqe *temp_wqe; + struct lpfc_register doorbell; + uint32_t host_index; + uint32_t idx; + + /* sanity check on queue memory */ + if (unlikely(!q)) + return -ENOMEM; + temp_wqe = q->qe[q->host_index].wqe; + + /* If the host has not yet processed the next entry then we are done */ + idx = ((q->host_index + 1) % q->entry_count); + if (idx == q->hba_index) { + q->WQ_overflow++; + return -ENOMEM; + } + q->WQ_posted++; + /* set consumption flag every once in a while */ + if (!((q->host_index + 1) % q->entry_repost)) + bf_set(wqe_wqec, &wqe->generic.wqe_com, 1); + if (q->phba->sli3_options & LPFC_SLI4_PHWQ_ENABLED) + bf_set(wqe_wqid, &wqe->generic.wqe_com, q->queue_id); + lpfc_sli_pcimem_bcopy(wqe, temp_wqe, q->entry_size); + + /* Update the host index before invoking device */ + host_index = q->host_index; + + q->host_index = idx; + + /* Ring Doorbell */ + doorbell.word0 = 0; + if (q->db_format == LPFC_DB_LIST_FORMAT) { + bf_set(lpfc_wq_db_list_fm_num_posted, &doorbell, 1); + bf_set(lpfc_wq_db_list_fm_index, &doorbell, host_index); + bf_set(lpfc_wq_db_list_fm_id, &doorbell, q->queue_id); + } else if (q->db_format == LPFC_DB_RING_FORMAT) { + bf_set(lpfc_wq_db_ring_fm_num_posted, &doorbell, 1); + bf_set(lpfc_wq_db_ring_fm_id, &doorbell, q->queue_id); + } else { + return -EINVAL; + } + writel(doorbell.word0, q->db_regaddr); + + return 0; +} + +/** + * lpfc_sli4_wq_release - Updates internal hba index for WQ + * @q: The Work Queue to operate on. + * @index: The index to advance the hba index to. + * + * This routine will update the HBA index of a queue to reflect consumption of + * Work Queue Entries by the HBA. When the HBA indicates that it has consumed + * an entry the host calls this function to update the queue's internal + * pointers. This routine returns the number of entries that were consumed by + * the HBA. + **/ +static uint32_t +lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index) +{ + uint32_t released = 0; + + /* sanity check on queue memory */ + if (unlikely(!q)) + return 0; + + if (q->hba_index == index) + return 0; + do { + q->hba_index = ((q->hba_index + 1) % q->entry_count); + released++; + } while (q->hba_index != index); + return released; +} + +/** + * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue + * @q: The Mailbox Queue to operate on. + * @wqe: The Mailbox Queue Entry to put on the Work queue. + * + * This routine will copy the contents of @mqe to the next available entry on + * the @q. This function will then ring the Work Queue Doorbell to signal the + * HBA to start processing the Work Queue Entry. This function returns 0 if + * successful. If no entries are available on @q then this function will return + * -ENOMEM. + * The caller is expected to hold the hbalock when calling this routine. + **/ +static uint32_t +lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe) +{ + struct lpfc_mqe *temp_mqe; + struct lpfc_register doorbell; + + /* sanity check on queue memory */ + if (unlikely(!q)) + return -ENOMEM; + temp_mqe = q->qe[q->host_index].mqe; + + /* If the host has not yet processed the next entry then we are done */ + if (((q->host_index + 1) % q->entry_count) == q->hba_index) + return -ENOMEM; + lpfc_sli_pcimem_bcopy(mqe, temp_mqe, q->entry_size); + /* Save off the mailbox pointer for completion */ + q->phba->mbox = (MAILBOX_t *)temp_mqe; + + /* Update the host index before invoking device */ + q->host_index = ((q->host_index + 1) % q->entry_count); + + /* Ring Doorbell */ + doorbell.word0 = 0; + bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1); + bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id); + writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr); + return 0; +} + +/** + * lpfc_sli4_mq_release - Updates internal hba index for MQ + * @q: The Mailbox Queue to operate on. + * + * This routine will update the HBA index of a queue to reflect consumption of + * a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed + * an entry the host calls this function to update the queue's internal + * pointers. This routine returns the number of entries that were consumed by + * the HBA. + **/ +static uint32_t +lpfc_sli4_mq_release(struct lpfc_queue *q) +{ + /* sanity check on queue memory */ + if (unlikely(!q)) + return 0; + + /* Clear the mailbox pointer for completion */ + q->phba->mbox = NULL; + q->hba_index = ((q->hba_index + 1) % q->entry_count); + return 1; +} + +/** + * lpfc_sli4_eq_get - Gets the next valid EQE from a EQ + * @q: The Event Queue to get the first valid EQE from + * + * This routine will get the first valid Event Queue Entry from @q, update + * the queue's internal hba index, and return the EQE. If no valid EQEs are in + * the Queue (no more work to do), or the Queue is full of EQEs that have been + * processed, but not popped back to the HBA then this routine will return NULL. + **/ +static struct lpfc_eqe * +lpfc_sli4_eq_get(struct lpfc_queue *q) +{ + struct lpfc_eqe *eqe; + uint32_t idx; + + /* sanity check on queue memory */ + if (unlikely(!q)) + return NULL; + eqe = q->qe[q->hba_index].eqe; + + /* If the next EQE is not valid then we are done */ + if (!bf_get_le32(lpfc_eqe_valid, eqe)) + return NULL; + /* If the host has not yet processed the next entry then we are done */ + idx = ((q->hba_index + 1) % q->entry_count); + if (idx == q->host_index) + return NULL; + + q->hba_index = idx; + + /* + * insert barrier for instruction interlock : data from the hardware + * must have the valid bit checked before it can be copied and acted + * upon. Given what was seen in lpfc_sli4_cq_get() of speculative + * instructions allowing action on content before valid bit checked, + * add barrier here as well. May not be needed as "content" is a + * single 32-bit entity here (vs multi word structure for cq's). + */ + mb(); + return eqe; +} + +/** + * lpfc_sli4_eq_clr_intr - Turn off interrupts from this EQ + * @q: The Event Queue to disable interrupts + * + **/ +static inline void +lpfc_sli4_eq_clr_intr(struct lpfc_queue *q) +{ + struct lpfc_register doorbell; + + doorbell.word0 = 0; + bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1); + bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT); + bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell, + (q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT)); + bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id); + writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr); +} + +/** + * lpfc_sli4_eq_release - Indicates the host has finished processing an EQ + * @q: The Event Queue that the host has completed processing for. + * @arm: Indicates whether the host wants to arms this CQ. + * + * This routine will mark all Event Queue Entries on @q, from the last + * known completed entry to the last entry that was processed, as completed + * by clearing the valid bit for each completion queue entry. Then it will + * notify the HBA, by ringing the doorbell, that the EQEs have been processed. + * The internal host index in the @q will be updated by this routine to indicate + * that the host has finished processing the entries. The @arm parameter + * indicates that the queue should be rearmed when ringing the doorbell. + * + * This function will return the number of EQEs that were popped. + **/ +uint32_t +lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm) +{ + uint32_t released = 0; + struct lpfc_eqe *temp_eqe; + struct lpfc_register doorbell; + + /* sanity check on queue memory */ + if (unlikely(!q)) + return 0; + + /* while there are valid entries */ + while (q->hba_index != q->host_index) { + temp_eqe = q->qe[q->host_index].eqe; + bf_set_le32(lpfc_eqe_valid, temp_eqe, 0); + released++; + q->host_index = ((q->host_index + 1) % q->entry_count); + } + if (unlikely(released == 0 && !arm)) + return 0; + + /* ring doorbell for number popped */ + doorbell.word0 = 0; + if (arm) { + bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1); + bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1); + } + bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released); + bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT); + bf_set(lpfc_eqcq_doorbell_eqid_hi, &doorbell, + (q->queue_id >> LPFC_EQID_HI_FIELD_SHIFT)); + bf_set(lpfc_eqcq_doorbell_eqid_lo, &doorbell, q->queue_id); + writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr); + /* PCI read to flush PCI pipeline on re-arming for INTx mode */ + if ((q->phba->intr_type == INTx) && (arm == LPFC_QUEUE_REARM)) + readl(q->phba->sli4_hba.EQCQDBregaddr); + return released; +} + +/** + * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ + * @q: The Completion Queue to get the first valid CQE from + * + * This routine will get the first valid Completion Queue Entry from @q, update + * the queue's internal hba index, and return the CQE. If no valid CQEs are in + * the Queue (no more work to do), or the Queue is full of CQEs that have been + * processed, but not popped back to the HBA then this routine will return NULL. + **/ +static struct lpfc_cqe * +lpfc_sli4_cq_get(struct lpfc_queue *q) +{ + struct lpfc_cqe *cqe; + uint32_t idx; + + /* sanity check on queue memory */ + if (unlikely(!q)) + return NULL; + + /* If the next CQE is not valid then we are done */ + if (!bf_get_le32(lpfc_cqe_valid, q->qe[q->hba_index].cqe)) + return NULL; + /* If the host has not yet processed the next entry then we are done */ + idx = ((q->hba_index + 1) % q->entry_count); + if (idx == q->host_index) + return NULL; + + cqe = q->qe[q->hba_index].cqe; + q->hba_index = idx; + + /* + * insert barrier for instruction interlock : data from the hardware + * must have the valid bit checked before it can be copied and acted + * upon. Speculative instructions were allowing a bcopy at the start + * of lpfc_sli4_fp_handle_wcqe(), which is called immediately + * after our return, to copy data before the valid bit check above + * was done. As such, some of the copied data was stale. The barrier + * ensures the check is before any data is copied. + */ + mb(); + return cqe; +} + +/** + * lpfc_sli4_cq_release - Indicates the host has finished processing a CQ + * @q: The Completion Queue that the host has completed processing for. + * @arm: Indicates whether the host wants to arms this CQ. + * + * This routine will mark all Completion queue entries on @q, from the last + * known completed entry to the last entry that was processed, as completed + * by clearing the valid bit for each completion queue entry. Then it will + * notify the HBA, by ringing the doorbell, that the CQEs have been processed. + * The internal host index in the @q will be updated by this routine to indicate + * that the host has finished processing the entries. The @arm parameter + * indicates that the queue should be rearmed when ringing the doorbell. + * + * This function will return the number of CQEs that were released. + **/ +uint32_t +lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm) +{ + uint32_t released = 0; + struct lpfc_cqe *temp_qe; + struct lpfc_register doorbell; + + /* sanity check on queue memory */ + if (unlikely(!q)) + return 0; + /* while there are valid entries */ + while (q->hba_index != q->host_index) { + temp_qe = q->qe[q->host_index].cqe; + bf_set_le32(lpfc_cqe_valid, temp_qe, 0); + released++; + q->host_index = ((q->host_index + 1) % q->entry_count); + } + if (unlikely(released == 0 && !arm)) + return 0; + + /* ring doorbell for number popped */ + doorbell.word0 = 0; + if (arm) + bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1); + bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released); + bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION); + bf_set(lpfc_eqcq_doorbell_cqid_hi, &doorbell, + (q->queue_id >> LPFC_CQID_HI_FIELD_SHIFT)); + bf_set(lpfc_eqcq_doorbell_cqid_lo, &doorbell, q->queue_id); + writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr); + return released; +} + +/** + * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue + * @q: The Header Receive Queue to operate on. + * @wqe: The Receive Queue Entry to put on the Receive queue. + * + * This routine will copy the contents of @wqe to the next available entry on + * the @q. This function will then ring the Receive Queue Doorbell to signal the + * HBA to start processing the Receive Queue Entry. This function returns the + * index that the rqe was copied to if successful. If no entries are available + * on @q then this function will return -ENOMEM. + * The caller is expected to hold the hbalock when calling this routine. + **/ +static int +lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq, + struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe) +{ + struct lpfc_rqe *temp_hrqe; + struct lpfc_rqe *temp_drqe; + struct lpfc_register doorbell; + int put_index; + + /* sanity check on queue memory */ + if (unlikely(!hq) || unlikely(!dq)) + return -ENOMEM; + put_index = hq->host_index; + temp_hrqe = hq->qe[hq->host_index].rqe; + temp_drqe = dq->qe[dq->host_index].rqe; + + if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ) + return -EINVAL; + if (hq->host_index != dq->host_index) + return -EINVAL; + /* If the host has not yet processed the next entry then we are done */ + if (((hq->host_index + 1) % hq->entry_count) == hq->hba_index) + return -EBUSY; + lpfc_sli_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size); + lpfc_sli_pcimem_bcopy(drqe, temp_drqe, dq->entry_size); + + /* Update the host index to point to the next slot */ + hq->host_index = ((hq->host_index + 1) % hq->entry_count); + dq->host_index = ((dq->host_index + 1) % dq->entry_count); + + /* Ring The Header Receive Queue Doorbell */ + if (!(hq->host_index % hq->entry_repost)) { + doorbell.word0 = 0; + if (hq->db_format == LPFC_DB_RING_FORMAT) { + bf_set(lpfc_rq_db_ring_fm_num_posted, &doorbell, + hq->entry_repost); + bf_set(lpfc_rq_db_ring_fm_id, &doorbell, hq->queue_id); + } else if (hq->db_format == LPFC_DB_LIST_FORMAT) { + bf_set(lpfc_rq_db_list_fm_num_posted, &doorbell, + hq->entry_repost); + bf_set(lpfc_rq_db_list_fm_index, &doorbell, + hq->host_index); + bf_set(lpfc_rq_db_list_fm_id, &doorbell, hq->queue_id); + } else { + return -EINVAL; + } + writel(doorbell.word0, hq->db_regaddr); + } + return put_index; +} + +/** + * lpfc_sli4_rq_release - Updates internal hba index for RQ + * @q: The Header Receive Queue to operate on. + * + * This routine will update the HBA index of a queue to reflect consumption of + * one Receive Queue Entry by the HBA. When the HBA indicates that it has + * consumed an entry the host calls this function to update the queue's + * internal pointers. This routine returns the number of entries that were + * consumed by the HBA. + **/ +static uint32_t +lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq) +{ + /* sanity check on queue memory */ + if (unlikely(!hq) || unlikely(!dq)) + return 0; + + if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ)) + return 0; + hq->hba_index = ((hq->hba_index + 1) % hq->entry_count); + dq->hba_index = ((dq->hba_index + 1) % dq->entry_count); + return 1; +} + +/** + * lpfc_cmd_iocb - Get next command iocb entry in the ring + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function returns pointer to next command iocb entry + * in the command ring. The caller must hold hbalock to prevent + * other threads consume the next command iocb. + * SLI-2/SLI-3 provide different sized iocbs. + **/ +static inline IOCB_t * +lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + return (IOCB_t *) (((char *) pring->sli.sli3.cmdringaddr) + + pring->sli.sli3.cmdidx * phba->iocb_cmd_size); +} + +/** + * lpfc_resp_iocb - Get next response iocb entry in the ring + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function returns pointer to next response iocb entry + * in the response ring. The caller must hold hbalock to make sure + * that no other thread consume the next response iocb. + * SLI-2/SLI-3 provide different sized iocbs. + **/ +static inline IOCB_t * +lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + return (IOCB_t *) (((char *) pring->sli.sli3.rspringaddr) + + pring->sli.sli3.rspidx * phba->iocb_rsp_size); +} + +/** + * __lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool + * @phba: Pointer to HBA context object. + * + * This function is called with hbalock held. This function + * allocates a new driver iocb object from the iocb pool. If the + * allocation is successful, it returns pointer to the newly + * allocated iocb object else it returns NULL. + **/ +struct lpfc_iocbq * +__lpfc_sli_get_iocbq(struct lpfc_hba *phba) +{ + struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list; + struct lpfc_iocbq * iocbq = NULL; + + list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list); + if (iocbq) + phba->iocb_cnt++; + if (phba->iocb_cnt > phba->iocb_max) + phba->iocb_max = phba->iocb_cnt; + return iocbq; +} + +/** + * __lpfc_clear_active_sglq - Remove the active sglq for this XRI. + * @phba: Pointer to HBA context object. + * @xritag: XRI value. + * + * This function clears the sglq pointer from the array of acive + * sglq's. The xritag that is passed in is used to index into the + * array. Before the xritag can be used it needs to be adjusted + * by subtracting the xribase. + * + * Returns sglq ponter = success, NULL = Failure. + **/ +static struct lpfc_sglq * +__lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag) +{ + struct lpfc_sglq *sglq; + + sglq = phba->sli4_hba.lpfc_sglq_active_list[xritag]; + phba->sli4_hba.lpfc_sglq_active_list[xritag] = NULL; + return sglq; +} + +/** + * __lpfc_get_active_sglq - Get the active sglq for this XRI. + * @phba: Pointer to HBA context object. + * @xritag: XRI value. + * + * This function returns the sglq pointer from the array of acive + * sglq's. The xritag that is passed in is used to index into the + * array. Before the xritag can be used it needs to be adjusted + * by subtracting the xribase. + * + * Returns sglq ponter = success, NULL = Failure. + **/ +struct lpfc_sglq * +__lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag) +{ + struct lpfc_sglq *sglq; + + sglq = phba->sli4_hba.lpfc_sglq_active_list[xritag]; + return sglq; +} + +/** + * lpfc_clr_rrq_active - Clears RRQ active bit in xri_bitmap. + * @phba: Pointer to HBA context object. + * @xritag: xri used in this exchange. + * @rrq: The RRQ to be cleared. + * + **/ +void +lpfc_clr_rrq_active(struct lpfc_hba *phba, + uint16_t xritag, + struct lpfc_node_rrq *rrq) +{ + struct lpfc_nodelist *ndlp = NULL; + + if ((rrq->vport) && NLP_CHK_NODE_ACT(rrq->ndlp)) + ndlp = lpfc_findnode_did(rrq->vport, rrq->nlp_DID); + + /* The target DID could have been swapped (cable swap) + * we should use the ndlp from the findnode if it is + * available. + */ + if ((!ndlp) && rrq->ndlp) + ndlp = rrq->ndlp; + + if (!ndlp) + goto out; + + if (test_and_clear_bit(xritag, ndlp->active_rrqs_xri_bitmap)) { + rrq->send_rrq = 0; + rrq->xritag = 0; + rrq->rrq_stop_time = 0; + } +out: + mempool_free(rrq, phba->rrq_pool); +} + +/** + * lpfc_handle_rrq_active - Checks if RRQ has waithed RATOV. + * @phba: Pointer to HBA context object. + * + * This function is called with hbalock held. This function + * Checks if stop_time (ratov from setting rrq active) has + * been reached, if it has and the send_rrq flag is set then + * it will call lpfc_send_rrq. If the send_rrq flag is not set + * then it will just call the routine to clear the rrq and + * free the rrq resource. + * The timer is set to the next rrq that is going to expire before + * leaving the routine. + * + **/ +void +lpfc_handle_rrq_active(struct lpfc_hba *phba) +{ + struct lpfc_node_rrq *rrq; + struct lpfc_node_rrq *nextrrq; + unsigned long next_time; + unsigned long iflags; + LIST_HEAD(send_rrq); + + spin_lock_irqsave(&phba->hbalock, iflags); + phba->hba_flag &= ~HBA_RRQ_ACTIVE; + next_time = jiffies + msecs_to_jiffies(1000 * (phba->fc_ratov + 1)); + list_for_each_entry_safe(rrq, nextrrq, + &phba->active_rrq_list, list) { + if (time_after(jiffies, rrq->rrq_stop_time)) + list_move(&rrq->list, &send_rrq); + else if (time_before(rrq->rrq_stop_time, next_time)) + next_time = rrq->rrq_stop_time; + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + if ((!list_empty(&phba->active_rrq_list)) && + (!(phba->pport->load_flag & FC_UNLOADING))) + mod_timer(&phba->rrq_tmr, next_time); + list_for_each_entry_safe(rrq, nextrrq, &send_rrq, list) { + list_del(&rrq->list); + if (!rrq->send_rrq) + /* this call will free the rrq */ + lpfc_clr_rrq_active(phba, rrq->xritag, rrq); + else if (lpfc_send_rrq(phba, rrq)) { + /* if we send the rrq then the completion handler + * will clear the bit in the xribitmap. + */ + lpfc_clr_rrq_active(phba, rrq->xritag, + rrq); + } + } +} + +/** + * lpfc_get_active_rrq - Get the active RRQ for this exchange. + * @vport: Pointer to vport context object. + * @xri: The xri used in the exchange. + * @did: The targets DID for this exchange. + * + * returns NULL = rrq not found in the phba->active_rrq_list. + * rrq = rrq for this xri and target. + **/ +struct lpfc_node_rrq * +lpfc_get_active_rrq(struct lpfc_vport *vport, uint16_t xri, uint32_t did) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_node_rrq *rrq; + struct lpfc_node_rrq *nextrrq; + unsigned long iflags; + + if (phba->sli_rev != LPFC_SLI_REV4) + return NULL; + spin_lock_irqsave(&phba->hbalock, iflags); + list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) { + if (rrq->vport == vport && rrq->xritag == xri && + rrq->nlp_DID == did){ + list_del(&rrq->list); + spin_unlock_irqrestore(&phba->hbalock, iflags); + return rrq; + } + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + return NULL; +} + +/** + * lpfc_cleanup_vports_rrqs - Remove and clear the active RRQ for this vport. + * @vport: Pointer to vport context object. + * @ndlp: Pointer to the lpfc_node_list structure. + * If ndlp is NULL Remove all active RRQs for this vport from the + * phba->active_rrq_list and clear the rrq. + * If ndlp is not NULL then only remove rrqs for this vport & this ndlp. + **/ +void +lpfc_cleanup_vports_rrqs(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) + +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_node_rrq *rrq; + struct lpfc_node_rrq *nextrrq; + unsigned long iflags; + LIST_HEAD(rrq_list); + + if (phba->sli_rev != LPFC_SLI_REV4) + return; + if (!ndlp) { + lpfc_sli4_vport_delete_els_xri_aborted(vport); + lpfc_sli4_vport_delete_fcp_xri_aborted(vport); + } + spin_lock_irqsave(&phba->hbalock, iflags); + list_for_each_entry_safe(rrq, nextrrq, &phba->active_rrq_list, list) + if ((rrq->vport == vport) && (!ndlp || rrq->ndlp == ndlp)) + list_move(&rrq->list, &rrq_list); + spin_unlock_irqrestore(&phba->hbalock, iflags); + + list_for_each_entry_safe(rrq, nextrrq, &rrq_list, list) { + list_del(&rrq->list); + lpfc_clr_rrq_active(phba, rrq->xritag, rrq); + } +} + +/** + * lpfc_test_rrq_active - Test RRQ bit in xri_bitmap. + * @phba: Pointer to HBA context object. + * @ndlp: Targets nodelist pointer for this exchange. + * @xritag the xri in the bitmap to test. + * + * This function is called with hbalock held. This function + * returns 0 = rrq not active for this xri + * 1 = rrq is valid for this xri. + **/ +int +lpfc_test_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, + uint16_t xritag) +{ + if (!ndlp) + return 0; + if (!ndlp->active_rrqs_xri_bitmap) + return 0; + if (test_bit(xritag, ndlp->active_rrqs_xri_bitmap)) + return 1; + else + return 0; +} + +/** + * lpfc_set_rrq_active - set RRQ active bit in xri_bitmap. + * @phba: Pointer to HBA context object. + * @ndlp: nodelist pointer for this target. + * @xritag: xri used in this exchange. + * @rxid: Remote Exchange ID. + * @send_rrq: Flag used to determine if we should send rrq els cmd. + * + * This function takes the hbalock. + * The active bit is always set in the active rrq xri_bitmap even + * if there is no slot avaiable for the other rrq information. + * + * returns 0 rrq actived for this xri + * < 0 No memory or invalid ndlp. + **/ +int +lpfc_set_rrq_active(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, + uint16_t xritag, uint16_t rxid, uint16_t send_rrq) +{ + unsigned long iflags; + struct lpfc_node_rrq *rrq; + int empty; + + if (!ndlp) + return -EINVAL; + + if (!phba->cfg_enable_rrq) + return -EINVAL; + + spin_lock_irqsave(&phba->hbalock, iflags); + if (phba->pport->load_flag & FC_UNLOADING) { + phba->hba_flag &= ~HBA_RRQ_ACTIVE; + goto out; + } + + /* + * set the active bit even if there is no mem available. + */ + if (NLP_CHK_FREE_REQ(ndlp)) + goto out; + + if (ndlp->vport && (ndlp->vport->load_flag & FC_UNLOADING)) + goto out; + + if (!ndlp->active_rrqs_xri_bitmap) + goto out; + + if (test_and_set_bit(xritag, ndlp->active_rrqs_xri_bitmap)) + goto out; + + spin_unlock_irqrestore(&phba->hbalock, iflags); + rrq = mempool_alloc(phba->rrq_pool, GFP_KERNEL); + if (!rrq) { + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "3155 Unable to allocate RRQ xri:0x%x rxid:0x%x" + " DID:0x%x Send:%d\n", + xritag, rxid, ndlp->nlp_DID, send_rrq); + return -EINVAL; + } + if (phba->cfg_enable_rrq == 1) + rrq->send_rrq = send_rrq; + else + rrq->send_rrq = 0; + rrq->xritag = xritag; + rrq->rrq_stop_time = jiffies + + msecs_to_jiffies(1000 * (phba->fc_ratov + 1)); + rrq->ndlp = ndlp; + rrq->nlp_DID = ndlp->nlp_DID; + rrq->vport = ndlp->vport; + rrq->rxid = rxid; + spin_lock_irqsave(&phba->hbalock, iflags); + empty = list_empty(&phba->active_rrq_list); + list_add_tail(&rrq->list, &phba->active_rrq_list); + phba->hba_flag |= HBA_RRQ_ACTIVE; + if (empty) + lpfc_worker_wake_up(phba); + spin_unlock_irqrestore(&phba->hbalock, iflags); + return 0; +out: + spin_unlock_irqrestore(&phba->hbalock, iflags); + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "2921 Can't set rrq active xri:0x%x rxid:0x%x" + " DID:0x%x Send:%d\n", + xritag, rxid, ndlp->nlp_DID, send_rrq); + return -EINVAL; +} + +/** + * __lpfc_sli_get_sglq - Allocates an iocb object from sgl pool + * @phba: Pointer to HBA context object. + * @piocb: Pointer to the iocbq. + * + * This function is called with the ring lock held. This function + * gets a new driver sglq object from the sglq list. If the + * list is not empty then it is successful, it returns pointer to the newly + * allocated sglq object else it returns NULL. + **/ +static struct lpfc_sglq * +__lpfc_sli_get_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq) +{ + struct list_head *lpfc_sgl_list = &phba->sli4_hba.lpfc_sgl_list; + struct lpfc_sglq *sglq = NULL; + struct lpfc_sglq *start_sglq = NULL; + struct lpfc_scsi_buf *lpfc_cmd; + struct lpfc_nodelist *ndlp; + int found = 0; + + if (piocbq->iocb_flag & LPFC_IO_FCP) { + lpfc_cmd = (struct lpfc_scsi_buf *) piocbq->context1; + ndlp = lpfc_cmd->rdata->pnode; + } else if ((piocbq->iocb.ulpCommand == CMD_GEN_REQUEST64_CR) && + !(piocbq->iocb_flag & LPFC_IO_LIBDFC)) { + ndlp = piocbq->context_un.ndlp; + } else if (piocbq->iocb_flag & LPFC_IO_LIBDFC) { + if (piocbq->iocb_flag & LPFC_IO_LOOPBACK) + ndlp = NULL; + else + ndlp = piocbq->context_un.ndlp; + } else { + ndlp = piocbq->context1; + } + + list_remove_head(lpfc_sgl_list, sglq, struct lpfc_sglq, list); + start_sglq = sglq; + while (!found) { + if (!sglq) + return NULL; + if (lpfc_test_rrq_active(phba, ndlp, sglq->sli4_lxritag)) { + /* This xri has an rrq outstanding for this DID. + * put it back in the list and get another xri. + */ + list_add_tail(&sglq->list, lpfc_sgl_list); + sglq = NULL; + list_remove_head(lpfc_sgl_list, sglq, + struct lpfc_sglq, list); + if (sglq == start_sglq) { + sglq = NULL; + break; + } else + continue; + } + sglq->ndlp = ndlp; + found = 1; + phba->sli4_hba.lpfc_sglq_active_list[sglq->sli4_lxritag] = sglq; + sglq->state = SGL_ALLOCATED; + } + return sglq; +} + +/** + * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool + * @phba: Pointer to HBA context object. + * + * This function is called with no lock held. This function + * allocates a new driver iocb object from the iocb pool. If the + * allocation is successful, it returns pointer to the newly + * allocated iocb object else it returns NULL. + **/ +struct lpfc_iocbq * +lpfc_sli_get_iocbq(struct lpfc_hba *phba) +{ + struct lpfc_iocbq * iocbq = NULL; + unsigned long iflags; + + spin_lock_irqsave(&phba->hbalock, iflags); + iocbq = __lpfc_sli_get_iocbq(phba); + spin_unlock_irqrestore(&phba->hbalock, iflags); + return iocbq; +} + +/** + * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool + * @phba: Pointer to HBA context object. + * @iocbq: Pointer to driver iocb object. + * + * This function is called with hbalock held to release driver + * iocb object to the iocb pool. The iotag in the iocb object + * does not change for each use of the iocb object. This function + * clears all other fields of the iocb object when it is freed. + * The sqlq structure that holds the xritag and phys and virtual + * mappings for the scatter gather list is retrieved from the + * active array of sglq. The get of the sglq pointer also clears + * the entry in the array. If the status of the IO indiactes that + * this IO was aborted then the sglq entry it put on the + * lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the + * IO has good status or fails for any other reason then the sglq + * entry is added to the free list (lpfc_sgl_list). + **/ +static void +__lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) +{ + struct lpfc_sglq *sglq; + size_t start_clean = offsetof(struct lpfc_iocbq, iocb); + unsigned long iflag = 0; + struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; + + if (iocbq->sli4_xritag == NO_XRI) + sglq = NULL; + else + sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_lxritag); + + + if (sglq) { + if ((iocbq->iocb_flag & LPFC_EXCHANGE_BUSY) && + (sglq->state != SGL_XRI_ABORTED)) { + spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock, + iflag); + list_add(&sglq->list, + &phba->sli4_hba.lpfc_abts_els_sgl_list); + spin_unlock_irqrestore( + &phba->sli4_hba.abts_sgl_list_lock, iflag); + } else { + spin_lock_irqsave(&pring->ring_lock, iflag); + sglq->state = SGL_FREED; + sglq->ndlp = NULL; + list_add_tail(&sglq->list, + &phba->sli4_hba.lpfc_sgl_list); + spin_unlock_irqrestore(&pring->ring_lock, iflag); + + /* Check if TXQ queue needs to be serviced */ + if (!list_empty(&pring->txq)) + lpfc_worker_wake_up(phba); + } + } + + + /* + * Clean all volatile data fields, preserve iotag and node struct. + */ + memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean); + iocbq->sli4_lxritag = NO_XRI; + iocbq->sli4_xritag = NO_XRI; + list_add_tail(&iocbq->list, &phba->lpfc_iocb_list); +} + + +/** + * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool + * @phba: Pointer to HBA context object. + * @iocbq: Pointer to driver iocb object. + * + * This function is called with hbalock held to release driver + * iocb object to the iocb pool. The iotag in the iocb object + * does not change for each use of the iocb object. This function + * clears all other fields of the iocb object when it is freed. + **/ +static void +__lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) +{ + size_t start_clean = offsetof(struct lpfc_iocbq, iocb); + + + /* + * Clean all volatile data fields, preserve iotag and node struct. + */ + memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean); + iocbq->sli4_xritag = NO_XRI; + list_add_tail(&iocbq->list, &phba->lpfc_iocb_list); +} + +/** + * __lpfc_sli_release_iocbq - Release iocb to the iocb pool + * @phba: Pointer to HBA context object. + * @iocbq: Pointer to driver iocb object. + * + * This function is called with hbalock held to release driver + * iocb object to the iocb pool. The iotag in the iocb object + * does not change for each use of the iocb object. This function + * clears all other fields of the iocb object when it is freed. + **/ +static void +__lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) +{ + phba->__lpfc_sli_release_iocbq(phba, iocbq); + phba->iocb_cnt--; +} + +/** + * lpfc_sli_release_iocbq - Release iocb to the iocb pool + * @phba: Pointer to HBA context object. + * @iocbq: Pointer to driver iocb object. + * + * This function is called with no lock held to release the iocb to + * iocb pool. + **/ +void +lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) +{ + unsigned long iflags; + + /* + * Clean all volatile data fields, preserve iotag and node struct. + */ + spin_lock_irqsave(&phba->hbalock, iflags); + __lpfc_sli_release_iocbq(phba, iocbq); + spin_unlock_irqrestore(&phba->hbalock, iflags); +} + +/** + * lpfc_sli_cancel_iocbs - Cancel all iocbs from a list. + * @phba: Pointer to HBA context object. + * @iocblist: List of IOCBs. + * @ulpstatus: ULP status in IOCB command field. + * @ulpWord4: ULP word-4 in IOCB command field. + * + * This function is called with a list of IOCBs to cancel. It cancels the IOCB + * on the list by invoking the complete callback function associated with the + * IOCB with the provided @ulpstatus and @ulpword4 set to the IOCB commond + * fields. + **/ +void +lpfc_sli_cancel_iocbs(struct lpfc_hba *phba, struct list_head *iocblist, + uint32_t ulpstatus, uint32_t ulpWord4) +{ + struct lpfc_iocbq *piocb; + + while (!list_empty(iocblist)) { + list_remove_head(iocblist, piocb, struct lpfc_iocbq, list); + if (!piocb->iocb_cmpl) + lpfc_sli_release_iocbq(phba, piocb); + else { + piocb->iocb.ulpStatus = ulpstatus; + piocb->iocb.un.ulpWord[4] = ulpWord4; + (piocb->iocb_cmpl) (phba, piocb, piocb); + } + } + return; +} + +/** + * lpfc_sli_iocb_cmd_type - Get the iocb type + * @iocb_cmnd: iocb command code. + * + * This function is called by ring event handler function to get the iocb type. + * This function translates the iocb command to an iocb command type used to + * decide the final disposition of each completed IOCB. + * The function returns + * LPFC_UNKNOWN_IOCB if it is an unsupported iocb + * LPFC_SOL_IOCB if it is a solicited iocb completion + * LPFC_ABORT_IOCB if it is an abort iocb + * LPFC_UNSOL_IOCB if it is an unsolicited iocb + * + * The caller is not required to hold any lock. + **/ +static lpfc_iocb_type +lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd) +{ + lpfc_iocb_type type = LPFC_UNKNOWN_IOCB; + + if (iocb_cmnd > CMD_MAX_IOCB_CMD) + return 0; + + switch (iocb_cmnd) { + case CMD_XMIT_SEQUENCE_CR: + case CMD_XMIT_SEQUENCE_CX: + case CMD_XMIT_BCAST_CN: + case CMD_XMIT_BCAST_CX: + case CMD_ELS_REQUEST_CR: + case CMD_ELS_REQUEST_CX: + case CMD_CREATE_XRI_CR: + case CMD_CREATE_XRI_CX: + case CMD_GET_RPI_CN: + case CMD_XMIT_ELS_RSP_CX: + case CMD_GET_RPI_CR: + case CMD_FCP_IWRITE_CR: + case CMD_FCP_IWRITE_CX: + case CMD_FCP_IREAD_CR: + case CMD_FCP_IREAD_CX: + case CMD_FCP_ICMND_CR: + case CMD_FCP_ICMND_CX: + case CMD_FCP_TSEND_CX: + case CMD_FCP_TRSP_CX: + case CMD_FCP_TRECEIVE_CX: + case CMD_FCP_AUTO_TRSP_CX: + case CMD_ADAPTER_MSG: + case CMD_ADAPTER_DUMP: + case CMD_XMIT_SEQUENCE64_CR: + case CMD_XMIT_SEQUENCE64_CX: + case CMD_XMIT_BCAST64_CN: + case CMD_XMIT_BCAST64_CX: + case CMD_ELS_REQUEST64_CR: + case CMD_ELS_REQUEST64_CX: + case CMD_FCP_IWRITE64_CR: + case CMD_FCP_IWRITE64_CX: + case CMD_FCP_IREAD64_CR: + case CMD_FCP_IREAD64_CX: + case CMD_FCP_ICMND64_CR: + case CMD_FCP_ICMND64_CX: + case CMD_FCP_TSEND64_CX: + case CMD_FCP_TRSP64_CX: + case CMD_FCP_TRECEIVE64_CX: + case CMD_GEN_REQUEST64_CR: + case CMD_GEN_REQUEST64_CX: + case CMD_XMIT_ELS_RSP64_CX: + case DSSCMD_IWRITE64_CR: + case DSSCMD_IWRITE64_CX: + case DSSCMD_IREAD64_CR: + case DSSCMD_IREAD64_CX: + type = LPFC_SOL_IOCB; + break; + case CMD_ABORT_XRI_CN: + case CMD_ABORT_XRI_CX: + case CMD_CLOSE_XRI_CN: + case CMD_CLOSE_XRI_CX: + case CMD_XRI_ABORTED_CX: + case CMD_ABORT_MXRI64_CN: + case CMD_XMIT_BLS_RSP64_CX: + type = LPFC_ABORT_IOCB; + break; + case CMD_RCV_SEQUENCE_CX: + case CMD_RCV_ELS_REQ_CX: + case CMD_RCV_SEQUENCE64_CX: + case CMD_RCV_ELS_REQ64_CX: + case CMD_ASYNC_STATUS: + case CMD_IOCB_RCV_SEQ64_CX: + case CMD_IOCB_RCV_ELS64_CX: + case CMD_IOCB_RCV_CONT64_CX: + case CMD_IOCB_RET_XRI64_CX: + type = LPFC_UNSOL_IOCB; + break; + case CMD_IOCB_XMIT_MSEQ64_CR: + case CMD_IOCB_XMIT_MSEQ64_CX: + case CMD_IOCB_RCV_SEQ_LIST64_CX: + case CMD_IOCB_RCV_ELS_LIST64_CX: + case CMD_IOCB_CLOSE_EXTENDED_CN: + case CMD_IOCB_ABORT_EXTENDED_CN: + case CMD_IOCB_RET_HBQE64_CN: + case CMD_IOCB_FCP_IBIDIR64_CR: + case CMD_IOCB_FCP_IBIDIR64_CX: + case CMD_IOCB_FCP_ITASKMGT64_CX: + case CMD_IOCB_LOGENTRY_CN: + case CMD_IOCB_LOGENTRY_ASYNC_CN: + printk("%s - Unhandled SLI-3 Command x%x\n", + __func__, iocb_cmnd); + type = LPFC_UNKNOWN_IOCB; + break; + default: + type = LPFC_UNKNOWN_IOCB; + break; + } + + return type; +} + +/** + * lpfc_sli_ring_map - Issue config_ring mbox for all rings + * @phba: Pointer to HBA context object. + * + * This function is called from SLI initialization code + * to configure every ring of the HBA's SLI interface. The + * caller is not required to hold any lock. This function issues + * a config_ring mailbox command for each ring. + * This function returns zero if successful else returns a negative + * error code. + **/ +static int +lpfc_sli_ring_map(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli = &phba->sli; + LPFC_MBOXQ_t *pmb; + MAILBOX_t *pmbox; + int i, rc, ret = 0; + + pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmb) + return -ENOMEM; + pmbox = &pmb->u.mb; + phba->link_state = LPFC_INIT_MBX_CMDS; + for (i = 0; i < psli->num_rings; i++) { + lpfc_config_ring(phba, i, pmb); + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0446 Adapter failed to init (%d), " + "mbxCmd x%x CFG_RING, mbxStatus x%x, " + "ring %d\n", + rc, pmbox->mbxCommand, + pmbox->mbxStatus, i); + phba->link_state = LPFC_HBA_ERROR; + ret = -ENXIO; + break; + } + } + mempool_free(pmb, phba->mbox_mem_pool); + return ret; +} + +/** + * lpfc_sli_ringtxcmpl_put - Adds new iocb to the txcmplq + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @piocb: Pointer to the driver iocb object. + * + * This function is called with hbalock held. The function adds the + * new iocb to txcmplq of the given ring. This function always returns + * 0. If this function is called for ELS ring, this function checks if + * there is a vport associated with the ELS command. This function also + * starts els_tmofunc timer if this is an ELS command. + **/ +static int +lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *piocb) +{ + list_add_tail(&piocb->list, &pring->txcmplq); + piocb->iocb_flag |= LPFC_IO_ON_TXCMPLQ; + + if ((unlikely(pring->ringno == LPFC_ELS_RING)) && + (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) && + (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN) && + (!(piocb->vport->load_flag & FC_UNLOADING))) { + if (!piocb->vport) + BUG(); + else + mod_timer(&piocb->vport->els_tmofunc, + jiffies + + msecs_to_jiffies(1000 * (phba->fc_ratov << 1))); + } + + + return 0; +} + +/** + * lpfc_sli_ringtx_get - Get first element of the txq + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function is called with hbalock held to get next + * iocb in txq of the given ring. If there is any iocb in + * the txq, the function returns first iocb in the list after + * removing the iocb from the list, else it returns NULL. + **/ +struct lpfc_iocbq * +lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + struct lpfc_iocbq *cmd_iocb; + + list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list); + return cmd_iocb; +} + +/** + * lpfc_sli_next_iocb_slot - Get next iocb slot in the ring + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function is called with hbalock held and the caller must post the + * iocb without releasing the lock. If the caller releases the lock, + * iocb slot returned by the function is not guaranteed to be available. + * The function returns pointer to the next available iocb slot if there + * is available slot in the ring, else it returns NULL. + * If the get index of the ring is ahead of the put index, the function + * will post an error attention event to the worker thread to take the + * HBA to offline state. + **/ +static IOCB_t * +lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; + uint32_t max_cmd_idx = pring->sli.sli3.numCiocb; + if ((pring->sli.sli3.next_cmdidx == pring->sli.sli3.cmdidx) && + (++pring->sli.sli3.next_cmdidx >= max_cmd_idx)) + pring->sli.sli3.next_cmdidx = 0; + + if (unlikely(pring->sli.sli3.local_getidx == + pring->sli.sli3.next_cmdidx)) { + + pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx); + + if (unlikely(pring->sli.sli3.local_getidx >= max_cmd_idx)) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0315 Ring %d issue: portCmdGet %d " + "is bigger than cmd ring %d\n", + pring->ringno, + pring->sli.sli3.local_getidx, + max_cmd_idx); + + phba->link_state = LPFC_HBA_ERROR; + /* + * All error attention handlers are posted to + * worker thread + */ + phba->work_ha |= HA_ERATT; + phba->work_hs = HS_FFER3; + + lpfc_worker_wake_up(phba); + + return NULL; + } + + if (pring->sli.sli3.local_getidx == pring->sli.sli3.next_cmdidx) + return NULL; + } + + return lpfc_cmd_iocb(phba, pring); +} + +/** + * lpfc_sli_next_iotag - Get an iotag for the iocb + * @phba: Pointer to HBA context object. + * @iocbq: Pointer to driver iocb object. + * + * This function gets an iotag for the iocb. If there is no unused iotag and + * the iocbq_lookup_len < 0xffff, this function allocates a bigger iotag_lookup + * array and assigns a new iotag. + * The function returns the allocated iotag if successful, else returns zero. + * Zero is not a valid iotag. + * The caller is not required to hold any lock. + **/ +uint16_t +lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) +{ + struct lpfc_iocbq **new_arr; + struct lpfc_iocbq **old_arr; + size_t new_len; + struct lpfc_sli *psli = &phba->sli; + uint16_t iotag; + + spin_lock_irq(&phba->hbalock); + iotag = psli->last_iotag; + if(++iotag < psli->iocbq_lookup_len) { + psli->last_iotag = iotag; + psli->iocbq_lookup[iotag] = iocbq; + spin_unlock_irq(&phba->hbalock); + iocbq->iotag = iotag; + return iotag; + } else if (psli->iocbq_lookup_len < (0xffff + - LPFC_IOCBQ_LOOKUP_INCREMENT)) { + new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT; + spin_unlock_irq(&phba->hbalock); + new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *), + GFP_KERNEL); + if (new_arr) { + spin_lock_irq(&phba->hbalock); + old_arr = psli->iocbq_lookup; + if (new_len <= psli->iocbq_lookup_len) { + /* highly unprobable case */ + kfree(new_arr); + iotag = psli->last_iotag; + if(++iotag < psli->iocbq_lookup_len) { + psli->last_iotag = iotag; + psli->iocbq_lookup[iotag] = iocbq; + spin_unlock_irq(&phba->hbalock); + iocbq->iotag = iotag; + return iotag; + } + spin_unlock_irq(&phba->hbalock); + return 0; + } + if (psli->iocbq_lookup) + memcpy(new_arr, old_arr, + ((psli->last_iotag + 1) * + sizeof (struct lpfc_iocbq *))); + psli->iocbq_lookup = new_arr; + psli->iocbq_lookup_len = new_len; + psli->last_iotag = iotag; + psli->iocbq_lookup[iotag] = iocbq; + spin_unlock_irq(&phba->hbalock); + iocbq->iotag = iotag; + kfree(old_arr); + return iotag; + } + } else + spin_unlock_irq(&phba->hbalock); + + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0318 Failed to allocate IOTAG.last IOTAG is %d\n", + psli->last_iotag); + + return 0; +} + +/** + * lpfc_sli_submit_iocb - Submit an iocb to the firmware + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @iocb: Pointer to iocb slot in the ring. + * @nextiocb: Pointer to driver iocb object which need to be + * posted to firmware. + * + * This function is called with hbalock held to post a new iocb to + * the firmware. This function copies the new iocb to ring iocb slot and + * updates the ring pointers. It adds the new iocb to txcmplq if there is + * a completion call back for this iocb else the function will free the + * iocb object. + **/ +static void +lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + IOCB_t *iocb, struct lpfc_iocbq *nextiocb) +{ + /* + * Set up an iotag + */ + nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0; + + + if (pring->ringno == LPFC_ELS_RING) { + lpfc_debugfs_slow_ring_trc(phba, + "IOCB cmd ring: wd4:x%08x wd6:x%08x wd7:x%08x", + *(((uint32_t *) &nextiocb->iocb) + 4), + *(((uint32_t *) &nextiocb->iocb) + 6), + *(((uint32_t *) &nextiocb->iocb) + 7)); + } + + /* + * Issue iocb command to adapter + */ + lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size); + wmb(); + pring->stats.iocb_cmd++; + + /* + * If there is no completion routine to call, we can release the + * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF, + * that have no rsp ring completion, iocb_cmpl MUST be NULL. + */ + if (nextiocb->iocb_cmpl) + lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb); + else + __lpfc_sli_release_iocbq(phba, nextiocb); + + /* + * Let the HBA know what IOCB slot will be the next one the + * driver will put a command into. + */ + pring->sli.sli3.cmdidx = pring->sli.sli3.next_cmdidx; + writel(pring->sli.sli3.cmdidx, &phba->host_gp[pring->ringno].cmdPutInx); +} + +/** + * lpfc_sli_update_full_ring - Update the chip attention register + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * The caller is not required to hold any lock for calling this function. + * This function updates the chip attention bits for the ring to inform firmware + * that there are pending work to be done for this ring and requests an + * interrupt when there is space available in the ring. This function is + * called when the driver is unable to post more iocbs to the ring due + * to unavailability of space in the ring. + **/ +static void +lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + int ringno = pring->ringno; + + pring->flag |= LPFC_CALL_RING_AVAILABLE; + + wmb(); + + /* + * Set ring 'ringno' to SET R0CE_REQ in Chip Att register. + * The HBA will tell us when an IOCB entry is available. + */ + writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr); + readl(phba->CAregaddr); /* flush */ + + pring->stats.iocb_cmd_full++; +} + +/** + * lpfc_sli_update_ring - Update chip attention register + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function updates the chip attention register bit for the + * given ring to inform HBA that there is more work to be done + * in this ring. The caller is not required to hold any lock. + **/ +static void +lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + int ringno = pring->ringno; + + /* + * Tell the HBA that there is work to do in this ring. + */ + if (!(phba->sli3_options & LPFC_SLI3_CRP_ENABLED)) { + wmb(); + writel(CA_R0ATT << (ringno * 4), phba->CAregaddr); + readl(phba->CAregaddr); /* flush */ + } +} + +/** + * lpfc_sli_resume_iocb - Process iocbs in the txq + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function is called with hbalock held to post pending iocbs + * in the txq to the firmware. This function is called when driver + * detects space available in the ring. + **/ +static void +lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + IOCB_t *iocb; + struct lpfc_iocbq *nextiocb; + + /* + * Check to see if: + * (a) there is anything on the txq to send + * (b) link is up + * (c) link attention events can be processed (fcp ring only) + * (d) IOCB processing is not blocked by the outstanding mbox command. + */ + + if (lpfc_is_link_up(phba) && + (!list_empty(&pring->txq)) && + (pring->ringno != phba->sli.fcp_ring || + phba->sli.sli_flag & LPFC_PROCESS_LA)) { + + while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && + (nextiocb = lpfc_sli_ringtx_get(phba, pring))) + lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); + + if (iocb) + lpfc_sli_update_ring(phba, pring); + else + lpfc_sli_update_full_ring(phba, pring); + } + + return; +} + +/** + * lpfc_sli_next_hbq_slot - Get next hbq entry for the HBQ + * @phba: Pointer to HBA context object. + * @hbqno: HBQ number. + * + * This function is called with hbalock held to get the next + * available slot for the given HBQ. If there is free slot + * available for the HBQ it will return pointer to the next available + * HBQ entry else it will return NULL. + **/ +static struct lpfc_hbq_entry * +lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno) +{ + struct hbq_s *hbqp = &phba->hbqs[hbqno]; + + if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx && + ++hbqp->next_hbqPutIdx >= hbqp->entry_count) + hbqp->next_hbqPutIdx = 0; + + if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) { + uint32_t raw_index = phba->hbq_get[hbqno]; + uint32_t getidx = le32_to_cpu(raw_index); + + hbqp->local_hbqGetIdx = getidx; + + if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) { + lpfc_printf_log(phba, KERN_ERR, + LOG_SLI | LOG_VPORT, + "1802 HBQ %d: local_hbqGetIdx " + "%u is > than hbqp->entry_count %u\n", + hbqno, hbqp->local_hbqGetIdx, + hbqp->entry_count); + + phba->link_state = LPFC_HBA_ERROR; + return NULL; + } + + if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx) + return NULL; + } + + return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt + + hbqp->hbqPutIdx; +} + +/** + * lpfc_sli_hbqbuf_free_all - Free all the hbq buffers + * @phba: Pointer to HBA context object. + * + * This function is called with no lock held to free all the + * hbq buffers while uninitializing the SLI interface. It also + * frees the HBQ buffers returned by the firmware but not yet + * processed by the upper layers. + **/ +void +lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba) +{ + struct lpfc_dmabuf *dmabuf, *next_dmabuf; + struct hbq_dmabuf *hbq_buf; + unsigned long flags; + int i, hbq_count; + uint32_t hbqno; + + hbq_count = lpfc_sli_hbq_count(); + /* Return all memory used by all HBQs */ + spin_lock_irqsave(&phba->hbalock, flags); + for (i = 0; i < hbq_count; ++i) { + list_for_each_entry_safe(dmabuf, next_dmabuf, + &phba->hbqs[i].hbq_buffer_list, list) { + hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf); + list_del(&hbq_buf->dbuf.list); + (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf); + } + phba->hbqs[i].buffer_count = 0; + } + /* Return all HBQ buffer that are in-fly */ + list_for_each_entry_safe(dmabuf, next_dmabuf, &phba->rb_pend_list, + list) { + hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf); + list_del(&hbq_buf->dbuf.list); + if (hbq_buf->tag == -1) { + (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) + (phba, hbq_buf); + } else { + hbqno = hbq_buf->tag >> 16; + if (hbqno >= LPFC_MAX_HBQS) + (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer) + (phba, hbq_buf); + else + (phba->hbqs[hbqno].hbq_free_buffer)(phba, + hbq_buf); + } + } + + /* Mark the HBQs not in use */ + phba->hbq_in_use = 0; + spin_unlock_irqrestore(&phba->hbalock, flags); +} + +/** + * lpfc_sli_hbq_to_firmware - Post the hbq buffer to firmware + * @phba: Pointer to HBA context object. + * @hbqno: HBQ number. + * @hbq_buf: Pointer to HBQ buffer. + * + * This function is called with the hbalock held to post a + * hbq buffer to the firmware. If the function finds an empty + * slot in the HBQ, it will post the buffer. The function will return + * pointer to the hbq entry if it successfully post the buffer + * else it will return NULL. + **/ +static int +lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno, + struct hbq_dmabuf *hbq_buf) +{ + return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf); +} + +/** + * lpfc_sli_hbq_to_firmware_s3 - Post the hbq buffer to SLI3 firmware + * @phba: Pointer to HBA context object. + * @hbqno: HBQ number. + * @hbq_buf: Pointer to HBQ buffer. + * + * This function is called with the hbalock held to post a hbq buffer to the + * firmware. If the function finds an empty slot in the HBQ, it will post the + * buffer and place it on the hbq_buffer_list. The function will return zero if + * it successfully post the buffer else it will return an error. + **/ +static int +lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno, + struct hbq_dmabuf *hbq_buf) +{ + struct lpfc_hbq_entry *hbqe; + dma_addr_t physaddr = hbq_buf->dbuf.phys; + + /* Get next HBQ entry slot to use */ + hbqe = lpfc_sli_next_hbq_slot(phba, hbqno); + if (hbqe) { + struct hbq_s *hbqp = &phba->hbqs[hbqno]; + + hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); + hbqe->bde.addrLow = le32_to_cpu(putPaddrLow(physaddr)); + hbqe->bde.tus.f.bdeSize = hbq_buf->size; + hbqe->bde.tus.f.bdeFlags = 0; + hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w); + hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag); + /* Sync SLIM */ + hbqp->hbqPutIdx = hbqp->next_hbqPutIdx; + writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno); + /* flush */ + readl(phba->hbq_put + hbqno); + list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list); + return 0; + } else + return -ENOMEM; +} + +/** + * lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware + * @phba: Pointer to HBA context object. + * @hbqno: HBQ number. + * @hbq_buf: Pointer to HBQ buffer. + * + * This function is called with the hbalock held to post an RQE to the SLI4 + * firmware. If able to post the RQE to the RQ it will queue the hbq entry to + * the hbq_buffer_list and return zero, otherwise it will return an error. + **/ +static int +lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno, + struct hbq_dmabuf *hbq_buf) +{ + int rc; + struct lpfc_rqe hrqe; + struct lpfc_rqe drqe; + + hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys); + hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys); + drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys); + drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys); + rc = lpfc_sli4_rq_put(phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq, + &hrqe, &drqe); + if (rc < 0) + return rc; + hbq_buf->tag = rc; + list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list); + return 0; +} + +/* HBQ for ELS and CT traffic. */ +static struct lpfc_hbq_init lpfc_els_hbq = { + .rn = 1, + .entry_count = 256, + .mask_count = 0, + .profile = 0, + .ring_mask = (1 << LPFC_ELS_RING), + .buffer_count = 0, + .init_count = 40, + .add_count = 40, +}; + +/* HBQ for the extra ring if needed */ +static struct lpfc_hbq_init lpfc_extra_hbq = { + .rn = 1, + .entry_count = 200, + .mask_count = 0, + .profile = 0, + .ring_mask = (1 << LPFC_EXTRA_RING), + .buffer_count = 0, + .init_count = 0, + .add_count = 5, +}; + +/* Array of HBQs */ +struct lpfc_hbq_init *lpfc_hbq_defs[] = { + &lpfc_els_hbq, + &lpfc_extra_hbq, +}; + +/** + * lpfc_sli_hbqbuf_fill_hbqs - Post more hbq buffers to HBQ + * @phba: Pointer to HBA context object. + * @hbqno: HBQ number. + * @count: Number of HBQ buffers to be posted. + * + * This function is called with no lock held to post more hbq buffers to the + * given HBQ. The function returns the number of HBQ buffers successfully + * posted. + **/ +static int +lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count) +{ + uint32_t i, posted = 0; + unsigned long flags; + struct hbq_dmabuf *hbq_buffer; + LIST_HEAD(hbq_buf_list); + if (!phba->hbqs[hbqno].hbq_alloc_buffer) + return 0; + + if ((phba->hbqs[hbqno].buffer_count + count) > + lpfc_hbq_defs[hbqno]->entry_count) + count = lpfc_hbq_defs[hbqno]->entry_count - + phba->hbqs[hbqno].buffer_count; + if (!count) + return 0; + /* Allocate HBQ entries */ + for (i = 0; i < count; i++) { + hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba); + if (!hbq_buffer) + break; + list_add_tail(&hbq_buffer->dbuf.list, &hbq_buf_list); + } + /* Check whether HBQ is still in use */ + spin_lock_irqsave(&phba->hbalock, flags); + if (!phba->hbq_in_use) + goto err; + while (!list_empty(&hbq_buf_list)) { + list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf, + dbuf.list); + hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count | + (hbqno << 16)); + if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) { + phba->hbqs[hbqno].buffer_count++; + posted++; + } else + (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); + } + spin_unlock_irqrestore(&phba->hbalock, flags); + return posted; +err: + spin_unlock_irqrestore(&phba->hbalock, flags); + while (!list_empty(&hbq_buf_list)) { + list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf, + dbuf.list); + (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); + } + return 0; +} + +/** + * lpfc_sli_hbqbuf_add_hbqs - Post more HBQ buffers to firmware + * @phba: Pointer to HBA context object. + * @qno: HBQ number. + * + * This function posts more buffers to the HBQ. This function + * is called with no lock held. The function returns the number of HBQ entries + * successfully allocated. + **/ +int +lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno) +{ + if (phba->sli_rev == LPFC_SLI_REV4) + return 0; + else + return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, + lpfc_hbq_defs[qno]->add_count); +} + +/** + * lpfc_sli_hbqbuf_init_hbqs - Post initial buffers to the HBQ + * @phba: Pointer to HBA context object. + * @qno: HBQ queue number. + * + * This function is called from SLI initialization code path with + * no lock held to post initial HBQ buffers to firmware. The + * function returns the number of HBQ entries successfully allocated. + **/ +static int +lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno) +{ + if (phba->sli_rev == LPFC_SLI_REV4) + return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, + lpfc_hbq_defs[qno]->entry_count); + else + return lpfc_sli_hbqbuf_fill_hbqs(phba, qno, + lpfc_hbq_defs[qno]->init_count); +} + +/** + * lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list + * @phba: Pointer to HBA context object. + * @hbqno: HBQ number. + * + * This function removes the first hbq buffer on an hbq list and returns a + * pointer to that buffer. If it finds no buffers on the list it returns NULL. + **/ +static struct hbq_dmabuf * +lpfc_sli_hbqbuf_get(struct list_head *rb_list) +{ + struct lpfc_dmabuf *d_buf; + + list_remove_head(rb_list, d_buf, struct lpfc_dmabuf, list); + if (!d_buf) + return NULL; + return container_of(d_buf, struct hbq_dmabuf, dbuf); +} + +/** + * lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag + * @phba: Pointer to HBA context object. + * @tag: Tag of the hbq buffer. + * + * This function is called with hbalock held. This function searches + * for the hbq buffer associated with the given tag in the hbq buffer + * list. If it finds the hbq buffer, it returns the hbq_buffer other wise + * it returns NULL. + **/ +static struct hbq_dmabuf * +lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag) +{ + struct lpfc_dmabuf *d_buf; + struct hbq_dmabuf *hbq_buf; + uint32_t hbqno; + + hbqno = tag >> 16; + if (hbqno >= LPFC_MAX_HBQS) + return NULL; + + spin_lock_irq(&phba->hbalock); + list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) { + hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); + if (hbq_buf->tag == tag) { + spin_unlock_irq(&phba->hbalock); + return hbq_buf; + } + } + spin_unlock_irq(&phba->hbalock); + lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT, + "1803 Bad hbq tag. Data: x%x x%x\n", + tag, phba->hbqs[tag >> 16].buffer_count); + return NULL; +} + +/** + * lpfc_sli_free_hbq - Give back the hbq buffer to firmware + * @phba: Pointer to HBA context object. + * @hbq_buffer: Pointer to HBQ buffer. + * + * This function is called with hbalock. This function gives back + * the hbq buffer to firmware. If the HBQ does not have space to + * post the buffer, it will free the buffer. + **/ +void +lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer) +{ + uint32_t hbqno; + + if (hbq_buffer) { + hbqno = hbq_buffer->tag >> 16; + if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) + (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer); + } +} + +/** + * lpfc_sli_chk_mbx_command - Check if the mailbox is a legitimate mailbox + * @mbxCommand: mailbox command code. + * + * This function is called by the mailbox event handler function to verify + * that the completed mailbox command is a legitimate mailbox command. If the + * completed mailbox is not known to the function, it will return MBX_SHUTDOWN + * and the mailbox event handler will take the HBA offline. + **/ +static int +lpfc_sli_chk_mbx_command(uint8_t mbxCommand) +{ + uint8_t ret; + + switch (mbxCommand) { + case MBX_LOAD_SM: + case MBX_READ_NV: + case MBX_WRITE_NV: + case MBX_WRITE_VPARMS: + case MBX_RUN_BIU_DIAG: + case MBX_INIT_LINK: + case MBX_DOWN_LINK: + case MBX_CONFIG_LINK: + case MBX_CONFIG_RING: + case MBX_RESET_RING: + case MBX_READ_CONFIG: + case MBX_READ_RCONFIG: + case MBX_READ_SPARM: + case MBX_READ_STATUS: + case MBX_READ_RPI: + case MBX_READ_XRI: + case MBX_READ_REV: + case MBX_READ_LNK_STAT: + case MBX_REG_LOGIN: + case MBX_UNREG_LOGIN: + case MBX_CLEAR_LA: + case MBX_DUMP_MEMORY: + case MBX_DUMP_CONTEXT: + case MBX_RUN_DIAGS: + case MBX_RESTART: + case MBX_UPDATE_CFG: + case MBX_DOWN_LOAD: + case MBX_DEL_LD_ENTRY: + case MBX_RUN_PROGRAM: + case MBX_SET_MASK: + case MBX_SET_VARIABLE: + case MBX_UNREG_D_ID: + case MBX_KILL_BOARD: + case MBX_CONFIG_FARP: + case MBX_BEACON: + case MBX_LOAD_AREA: + case MBX_RUN_BIU_DIAG64: + case MBX_CONFIG_PORT: + case MBX_READ_SPARM64: + case MBX_READ_RPI64: + case MBX_REG_LOGIN64: + case MBX_READ_TOPOLOGY: + case MBX_WRITE_WWN: + case MBX_SET_DEBUG: + case MBX_LOAD_EXP_ROM: + case MBX_ASYNCEVT_ENABLE: + case MBX_REG_VPI: + case MBX_UNREG_VPI: + case MBX_HEARTBEAT: + case MBX_PORT_CAPABILITIES: + case MBX_PORT_IOV_CONTROL: + case MBX_SLI4_CONFIG: + case MBX_SLI4_REQ_FTRS: + case MBX_REG_FCFI: + case MBX_UNREG_FCFI: + case MBX_REG_VFI: + case MBX_UNREG_VFI: + case MBX_INIT_VPI: + case MBX_INIT_VFI: + case MBX_RESUME_RPI: + case MBX_READ_EVENT_LOG_STATUS: + case MBX_READ_EVENT_LOG: + case MBX_SECURITY_MGMT: + case MBX_AUTH_PORT: + case MBX_ACCESS_VDATA: + ret = mbxCommand; + break; + default: + ret = MBX_SHUTDOWN; + break; + } + return ret; +} + +/** + * lpfc_sli_wake_mbox_wait - lpfc_sli_issue_mbox_wait mbox completion handler + * @phba: Pointer to HBA context object. + * @pmboxq: Pointer to mailbox command. + * + * This is completion handler function for mailbox commands issued from + * lpfc_sli_issue_mbox_wait function. This function is called by the + * mailbox event handler function with no lock held. This function + * will wake up thread waiting on the wait queue pointed by context1 + * of the mailbox. + **/ +void +lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) +{ + wait_queue_head_t *pdone_q; + unsigned long drvr_flag; + + /* + * If pdone_q is empty, the driver thread gave up waiting and + * continued running. + */ + pmboxq->mbox_flag |= LPFC_MBX_WAKE; + spin_lock_irqsave(&phba->hbalock, drvr_flag); + pdone_q = (wait_queue_head_t *) pmboxq->context1; + if (pdone_q) + wake_up_interruptible(pdone_q); + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + return; +} + + +/** + * lpfc_sli_def_mbox_cmpl - Default mailbox completion handler + * @phba: Pointer to HBA context object. + * @pmb: Pointer to mailbox object. + * + * This function is the default mailbox completion handler. It + * frees the memory resources associated with the completed mailbox + * command. If the completed command is a REG_LOGIN mailbox command, + * this function will issue a UREG_LOGIN to re-claim the RPI. + **/ +void +lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) +{ + struct lpfc_vport *vport = pmb->vport; + struct lpfc_dmabuf *mp; + struct lpfc_nodelist *ndlp; + struct Scsi_Host *shost; + uint16_t rpi, vpi; + int rc; + + mp = (struct lpfc_dmabuf *) (pmb->context1); + + if (mp) { + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + } + + /* + * If a REG_LOGIN succeeded after node is destroyed or node + * is in re-discovery driver need to cleanup the RPI. + */ + if (!(phba->pport->load_flag & FC_UNLOADING) && + pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 && + !pmb->u.mb.mbxStatus) { + rpi = pmb->u.mb.un.varWords[0]; + vpi = pmb->u.mb.un.varRegLogin.vpi; + lpfc_unreg_login(phba, vpi, rpi, pmb); + pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); + if (rc != MBX_NOT_FINISHED) + return; + } + + if ((pmb->u.mb.mbxCommand == MBX_REG_VPI) && + !(phba->pport->load_flag & FC_UNLOADING) && + !pmb->u.mb.mbxStatus) { + shost = lpfc_shost_from_vport(vport); + spin_lock_irq(shost->host_lock); + vport->vpi_state |= LPFC_VPI_REGISTERED; + vport->fc_flag &= ~FC_VPORT_NEEDS_REG_VPI; + spin_unlock_irq(shost->host_lock); + } + + if (pmb->u.mb.mbxCommand == MBX_REG_LOGIN64) { + ndlp = (struct lpfc_nodelist *)pmb->context2; + lpfc_nlp_put(ndlp); + pmb->context2 = NULL; + } + + /* Check security permission status on INIT_LINK mailbox command */ + if ((pmb->u.mb.mbxCommand == MBX_INIT_LINK) && + (pmb->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION)) + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "2860 SLI authentication is required " + "for INIT_LINK but has not done yet\n"); + + if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG) + lpfc_sli4_mbox_cmd_free(phba, pmb); + else + mempool_free(pmb, phba->mbox_mem_pool); +} + /** + * lpfc_sli4_unreg_rpi_cmpl_clr - mailbox completion handler + * @phba: Pointer to HBA context object. + * @pmb: Pointer to mailbox object. + * + * This function is the unreg rpi mailbox completion handler. It + * frees the memory resources associated with the completed mailbox + * command. An additional refrenece is put on the ndlp to prevent + * lpfc_nlp_release from freeing the rpi bit in the bitmask before + * the unreg mailbox command completes, this routine puts the + * reference back. + * + **/ +void +lpfc_sli4_unreg_rpi_cmpl_clr(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) +{ + struct lpfc_vport *vport = pmb->vport; + struct lpfc_nodelist *ndlp; + + ndlp = pmb->context1; + if (pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) { + if (phba->sli_rev == LPFC_SLI_REV4 && + (bf_get(lpfc_sli_intf_if_type, + &phba->sli4_hba.sli_intf) == + LPFC_SLI_INTF_IF_TYPE_2)) { + if (ndlp) { + lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, + "0010 UNREG_LOGIN vpi:%x " + "rpi:%x DID:%x map:%x %p\n", + vport->vpi, ndlp->nlp_rpi, + ndlp->nlp_DID, + ndlp->nlp_usg_map, ndlp); + + lpfc_nlp_put(ndlp); + } + } + } + + mempool_free(pmb, phba->mbox_mem_pool); +} + +/** + * lpfc_sli_handle_mb_event - Handle mailbox completions from firmware + * @phba: Pointer to HBA context object. + * + * This function is called with no lock held. This function processes all + * the completed mailbox commands and gives it to upper layers. The interrupt + * service routine processes mailbox completion interrupt and adds completed + * mailbox commands to the mboxq_cmpl queue and signals the worker thread. + * Worker thread call lpfc_sli_handle_mb_event, which will return the + * completed mailbox commands in mboxq_cmpl queue to the upper layers. This + * function returns the mailbox commands to the upper layer by calling the + * completion handler function of each mailbox. + **/ +int +lpfc_sli_handle_mb_event(struct lpfc_hba *phba) +{ + MAILBOX_t *pmbox; + LPFC_MBOXQ_t *pmb; + int rc; + LIST_HEAD(cmplq); + + phba->sli.slistat.mbox_event++; + + /* Get all completed mailboxe buffers into the cmplq */ + spin_lock_irq(&phba->hbalock); + list_splice_init(&phba->sli.mboxq_cmpl, &cmplq); + spin_unlock_irq(&phba->hbalock); + + /* Get a Mailbox buffer to setup mailbox commands for callback */ + do { + list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list); + if (pmb == NULL) + break; + + pmbox = &pmb->u.mb; + + if (pmbox->mbxCommand != MBX_HEARTBEAT) { + if (pmb->vport) { + lpfc_debugfs_disc_trc(pmb->vport, + LPFC_DISC_TRC_MBOX_VPORT, + "MBOX cmpl vport: cmd:x%x mb:x%x x%x", + (uint32_t)pmbox->mbxCommand, + pmbox->un.varWords[0], + pmbox->un.varWords[1]); + } + else { + lpfc_debugfs_disc_trc(phba->pport, + LPFC_DISC_TRC_MBOX, + "MBOX cmpl: cmd:x%x mb:x%x x%x", + (uint32_t)pmbox->mbxCommand, + pmbox->un.varWords[0], + pmbox->un.varWords[1]); + } + } + + /* + * It is a fatal error if unknown mbox command completion. + */ + if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) == + MBX_SHUTDOWN) { + /* Unknown mailbox command compl */ + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):0323 Unknown Mailbox command " + "x%x (x%x/x%x) Cmpl\n", + pmb->vport ? pmb->vport->vpi : 0, + pmbox->mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, + pmb), + lpfc_sli_config_mbox_opcode_get(phba, + pmb)); + phba->link_state = LPFC_HBA_ERROR; + phba->work_hs = HS_FFER3; + lpfc_handle_eratt(phba); + continue; + } + + if (pmbox->mbxStatus) { + phba->sli.slistat.mbox_stat_err++; + if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) { + /* Mbox cmd cmpl error - RETRYing */ + lpfc_printf_log(phba, KERN_INFO, + LOG_MBOX | LOG_SLI, + "(%d):0305 Mbox cmd cmpl " + "error - RETRYing Data: x%x " + "(x%x/x%x) x%x x%x x%x\n", + pmb->vport ? pmb->vport->vpi : 0, + pmbox->mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, + pmb), + lpfc_sli_config_mbox_opcode_get(phba, + pmb), + pmbox->mbxStatus, + pmbox->un.varWords[0], + pmb->vport->port_state); + pmbox->mbxStatus = 0; + pmbox->mbxOwner = OWN_HOST; + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); + if (rc != MBX_NOT_FINISHED) + continue; + } + } + + /* Mailbox cmd <cmd> Cmpl <cmpl> */ + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "(%d):0307 Mailbox cmd x%x (x%x/x%x) Cmpl x%p " + "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x " + "x%x x%x x%x\n", + pmb->vport ? pmb->vport->vpi : 0, + pmbox->mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, pmb), + lpfc_sli_config_mbox_opcode_get(phba, pmb), + pmb->mbox_cmpl, + *((uint32_t *) pmbox), + pmbox->un.varWords[0], + pmbox->un.varWords[1], + pmbox->un.varWords[2], + pmbox->un.varWords[3], + pmbox->un.varWords[4], + pmbox->un.varWords[5], + pmbox->un.varWords[6], + pmbox->un.varWords[7], + pmbox->un.varWords[8], + pmbox->un.varWords[9], + pmbox->un.varWords[10]); + + if (pmb->mbox_cmpl) + pmb->mbox_cmpl(phba,pmb); + } while (1); + return 0; +} + +/** + * lpfc_sli_get_buff - Get the buffer associated with the buffer tag + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @tag: buffer tag. + * + * This function is called with no lock held. When QUE_BUFTAG_BIT bit + * is set in the tag the buffer is posted for a particular exchange, + * the function will return the buffer without replacing the buffer. + * If the buffer is for unsolicited ELS or CT traffic, this function + * returns the buffer and also posts another buffer to the firmware. + **/ +static struct lpfc_dmabuf * +lpfc_sli_get_buff(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, + uint32_t tag) +{ + struct hbq_dmabuf *hbq_entry; + + if (tag & QUE_BUFTAG_BIT) + return lpfc_sli_ring_taggedbuf_get(phba, pring, tag); + hbq_entry = lpfc_sli_hbqbuf_find(phba, tag); + if (!hbq_entry) + return NULL; + return &hbq_entry->dbuf; +} + +/** + * lpfc_complete_unsol_iocb - Complete an unsolicited sequence + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @saveq: Pointer to the iocbq struct representing the sequence starting frame. + * @fch_r_ctl: the r_ctl for the first frame of the sequence. + * @fch_type: the type for the first frame of the sequence. + * + * This function is called with no lock held. This function uses the r_ctl and + * type of the received sequence to find the correct callback function to call + * to process the sequence. + **/ +static int +lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *saveq, uint32_t fch_r_ctl, + uint32_t fch_type) +{ + int i; + + /* unSolicited Responses */ + if (pring->prt[0].profile) { + if (pring->prt[0].lpfc_sli_rcv_unsol_event) + (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, + saveq); + return 1; + } + /* We must search, based on rctl / type + for the right routine */ + for (i = 0; i < pring->num_mask; i++) { + if ((pring->prt[i].rctl == fch_r_ctl) && + (pring->prt[i].type == fch_type)) { + if (pring->prt[i].lpfc_sli_rcv_unsol_event) + (pring->prt[i].lpfc_sli_rcv_unsol_event) + (phba, pring, saveq); + return 1; + } + } + return 0; +} + +/** + * lpfc_sli_process_unsol_iocb - Unsolicited iocb handler + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @saveq: Pointer to the unsolicited iocb. + * + * This function is called with no lock held by the ring event handler + * when there is an unsolicited iocb posted to the response ring by the + * firmware. This function gets the buffer associated with the iocbs + * and calls the event handler for the ring. This function handles both + * qring buffers and hbq buffers. + * When the function returns 1 the caller can free the iocb object otherwise + * upper layer functions will free the iocb objects. + **/ +static int +lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *saveq) +{ + IOCB_t * irsp; + WORD5 * w5p; + uint32_t Rctl, Type; + struct lpfc_iocbq *iocbq; + struct lpfc_dmabuf *dmzbuf; + + irsp = &(saveq->iocb); + + if (irsp->ulpCommand == CMD_ASYNC_STATUS) { + if (pring->lpfc_sli_rcv_async_status) + pring->lpfc_sli_rcv_async_status(phba, pring, saveq); + else + lpfc_printf_log(phba, + KERN_WARNING, + LOG_SLI, + "0316 Ring %d handler: unexpected " + "ASYNC_STATUS iocb received evt_code " + "0x%x\n", + pring->ringno, + irsp->un.asyncstat.evt_code); + return 1; + } + + if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) && + (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) { + if (irsp->ulpBdeCount > 0) { + dmzbuf = lpfc_sli_get_buff(phba, pring, + irsp->un.ulpWord[3]); + lpfc_in_buf_free(phba, dmzbuf); + } + + if (irsp->ulpBdeCount > 1) { + dmzbuf = lpfc_sli_get_buff(phba, pring, + irsp->unsli3.sli3Words[3]); + lpfc_in_buf_free(phba, dmzbuf); + } + + if (irsp->ulpBdeCount > 2) { + dmzbuf = lpfc_sli_get_buff(phba, pring, + irsp->unsli3.sli3Words[7]); + lpfc_in_buf_free(phba, dmzbuf); + } + + return 1; + } + + if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { + if (irsp->ulpBdeCount != 0) { + saveq->context2 = lpfc_sli_get_buff(phba, pring, + irsp->un.ulpWord[3]); + if (!saveq->context2) + lpfc_printf_log(phba, + KERN_ERR, + LOG_SLI, + "0341 Ring %d Cannot find buffer for " + "an unsolicited iocb. tag 0x%x\n", + pring->ringno, + irsp->un.ulpWord[3]); + } + if (irsp->ulpBdeCount == 2) { + saveq->context3 = lpfc_sli_get_buff(phba, pring, + irsp->unsli3.sli3Words[7]); + if (!saveq->context3) + lpfc_printf_log(phba, + KERN_ERR, + LOG_SLI, + "0342 Ring %d Cannot find buffer for an" + " unsolicited iocb. tag 0x%x\n", + pring->ringno, + irsp->unsli3.sli3Words[7]); + } + list_for_each_entry(iocbq, &saveq->list, list) { + irsp = &(iocbq->iocb); + if (irsp->ulpBdeCount != 0) { + iocbq->context2 = lpfc_sli_get_buff(phba, pring, + irsp->un.ulpWord[3]); + if (!iocbq->context2) + lpfc_printf_log(phba, + KERN_ERR, + LOG_SLI, + "0343 Ring %d Cannot find " + "buffer for an unsolicited iocb" + ". tag 0x%x\n", pring->ringno, + irsp->un.ulpWord[3]); + } + if (irsp->ulpBdeCount == 2) { + iocbq->context3 = lpfc_sli_get_buff(phba, pring, + irsp->unsli3.sli3Words[7]); + if (!iocbq->context3) + lpfc_printf_log(phba, + KERN_ERR, + LOG_SLI, + "0344 Ring %d Cannot find " + "buffer for an unsolicited " + "iocb. tag 0x%x\n", + pring->ringno, + irsp->unsli3.sli3Words[7]); + } + } + } + if (irsp->ulpBdeCount != 0 && + (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX || + irsp->ulpStatus == IOSTAT_INTERMED_RSP)) { + int found = 0; + + /* search continue save q for same XRI */ + list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) { + if (iocbq->iocb.unsli3.rcvsli3.ox_id == + saveq->iocb.unsli3.rcvsli3.ox_id) { + list_add_tail(&saveq->list, &iocbq->list); + found = 1; + break; + } + } + if (!found) + list_add_tail(&saveq->clist, + &pring->iocb_continue_saveq); + if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) { + list_del_init(&iocbq->clist); + saveq = iocbq; + irsp = &(saveq->iocb); + } else + return 0; + } + if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) || + (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) || + (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) { + Rctl = FC_RCTL_ELS_REQ; + Type = FC_TYPE_ELS; + } else { + w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]); + Rctl = w5p->hcsw.Rctl; + Type = w5p->hcsw.Type; + + /* Firmware Workaround */ + if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) && + (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX || + irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) { + Rctl = FC_RCTL_ELS_REQ; + Type = FC_TYPE_ELS; + w5p->hcsw.Rctl = Rctl; + w5p->hcsw.Type = Type; + } + } + + if (!lpfc_complete_unsol_iocb(phba, pring, saveq, Rctl, Type)) + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0313 Ring %d handler: unexpected Rctl x%x " + "Type x%x received\n", + pring->ringno, Rctl, Type); + + return 1; +} + +/** + * lpfc_sli_iocbq_lookup - Find command iocb for the given response iocb + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @prspiocb: Pointer to response iocb object. + * + * This function looks up the iocb_lookup table to get the command iocb + * corresponding to the given response iocb using the iotag of the + * response iocb. This function is called with the hbalock held. + * This function returns the command iocb object if it finds the command + * iocb else returns NULL. + **/ +static struct lpfc_iocbq * +lpfc_sli_iocbq_lookup(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, + struct lpfc_iocbq *prspiocb) +{ + struct lpfc_iocbq *cmd_iocb = NULL; + uint16_t iotag; + + iotag = prspiocb->iocb.ulpIoTag; + + if (iotag != 0 && iotag <= phba->sli.last_iotag) { + cmd_iocb = phba->sli.iocbq_lookup[iotag]; + list_del_init(&cmd_iocb->list); + if (cmd_iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ) { + cmd_iocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ; + } + return cmd_iocb; + } + + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0317 iotag x%x is out off " + "range: max iotag x%x wd0 x%x\n", + iotag, phba->sli.last_iotag, + *(((uint32_t *) &prspiocb->iocb) + 7)); + return NULL; +} + +/** + * lpfc_sli_iocbq_lookup_by_tag - Find command iocb for the iotag + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @iotag: IOCB tag. + * + * This function looks up the iocb_lookup table to get the command iocb + * corresponding to the given iotag. This function is called with the + * hbalock held. + * This function returns the command iocb object if it finds the command + * iocb else returns NULL. + **/ +static struct lpfc_iocbq * +lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, uint16_t iotag) +{ + struct lpfc_iocbq *cmd_iocb; + + if (iotag != 0 && iotag <= phba->sli.last_iotag) { + cmd_iocb = phba->sli.iocbq_lookup[iotag]; + if (cmd_iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ) { + /* remove from txcmpl queue list */ + list_del_init(&cmd_iocb->list); + cmd_iocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ; + return cmd_iocb; + } + } + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0372 iotag x%x is out off range: max iotag (x%x)\n", + iotag, phba->sli.last_iotag); + return NULL; +} + +/** + * lpfc_sli_process_sol_iocb - process solicited iocb completion + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @saveq: Pointer to the response iocb to be processed. + * + * This function is called by the ring event handler for non-fcp + * rings when there is a new response iocb in the response ring. + * The caller is not required to hold any locks. This function + * gets the command iocb associated with the response iocb and + * calls the completion handler for the command iocb. If there + * is no completion handler, the function will free the resources + * associated with command iocb. If the response iocb is for + * an already aborted command iocb, the status of the completion + * is changed to IOSTAT_LOCAL_REJECT/IOERR_SLI_ABORTED. + * This function always returns 1. + **/ +static int +lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *saveq) +{ + struct lpfc_iocbq *cmdiocbp; + int rc = 1; + unsigned long iflag; + + /* Based on the iotag field, get the cmd IOCB from the txcmplq */ + spin_lock_irqsave(&phba->hbalock, iflag); + cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq); + spin_unlock_irqrestore(&phba->hbalock, iflag); + + if (cmdiocbp) { + if (cmdiocbp->iocb_cmpl) { + /* + * If an ELS command failed send an event to mgmt + * application. + */ + if (saveq->iocb.ulpStatus && + (pring->ringno == LPFC_ELS_RING) && + (cmdiocbp->iocb.ulpCommand == + CMD_ELS_REQUEST64_CR)) + lpfc_send_els_failure_event(phba, + cmdiocbp, saveq); + + /* + * Post all ELS completions to the worker thread. + * All other are passed to the completion callback. + */ + if (pring->ringno == LPFC_ELS_RING) { + if ((phba->sli_rev < LPFC_SLI_REV4) && + (cmdiocbp->iocb_flag & + LPFC_DRIVER_ABORTED)) { + spin_lock_irqsave(&phba->hbalock, + iflag); + cmdiocbp->iocb_flag &= + ~LPFC_DRIVER_ABORTED; + spin_unlock_irqrestore(&phba->hbalock, + iflag); + saveq->iocb.ulpStatus = + IOSTAT_LOCAL_REJECT; + saveq->iocb.un.ulpWord[4] = + IOERR_SLI_ABORTED; + + /* Firmware could still be in progress + * of DMAing payload, so don't free data + * buffer till after a hbeat. + */ + spin_lock_irqsave(&phba->hbalock, + iflag); + saveq->iocb_flag |= LPFC_DELAY_MEM_FREE; + spin_unlock_irqrestore(&phba->hbalock, + iflag); + } + if (phba->sli_rev == LPFC_SLI_REV4) { + if (saveq->iocb_flag & + LPFC_EXCHANGE_BUSY) { + /* Set cmdiocb flag for the + * exchange busy so sgl (xri) + * will not be released until + * the abort xri is received + * from hba. + */ + spin_lock_irqsave( + &phba->hbalock, iflag); + cmdiocbp->iocb_flag |= + LPFC_EXCHANGE_BUSY; + spin_unlock_irqrestore( + &phba->hbalock, iflag); + } + if (cmdiocbp->iocb_flag & + LPFC_DRIVER_ABORTED) { + /* + * Clear LPFC_DRIVER_ABORTED + * bit in case it was driver + * initiated abort. + */ + spin_lock_irqsave( + &phba->hbalock, iflag); + cmdiocbp->iocb_flag &= + ~LPFC_DRIVER_ABORTED; + spin_unlock_irqrestore( + &phba->hbalock, iflag); + cmdiocbp->iocb.ulpStatus = + IOSTAT_LOCAL_REJECT; + cmdiocbp->iocb.un.ulpWord[4] = + IOERR_ABORT_REQUESTED; + /* + * For SLI4, irsiocb contains + * NO_XRI in sli_xritag, it + * shall not affect releasing + * sgl (xri) process. + */ + saveq->iocb.ulpStatus = + IOSTAT_LOCAL_REJECT; + saveq->iocb.un.ulpWord[4] = + IOERR_SLI_ABORTED; + spin_lock_irqsave( + &phba->hbalock, iflag); + saveq->iocb_flag |= + LPFC_DELAY_MEM_FREE; + spin_unlock_irqrestore( + &phba->hbalock, iflag); + } + } + } + (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq); + } else + lpfc_sli_release_iocbq(phba, cmdiocbp); + } else { + /* + * Unknown initiating command based on the response iotag. + * This could be the case on the ELS ring because of + * lpfc_els_abort(). + */ + if (pring->ringno != LPFC_ELS_RING) { + /* + * Ring <ringno> handler: unexpected completion IoTag + * <IoTag> + */ + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0322 Ring %d handler: " + "unexpected completion IoTag x%x " + "Data: x%x x%x x%x x%x\n", + pring->ringno, + saveq->iocb.ulpIoTag, + saveq->iocb.ulpStatus, + saveq->iocb.un.ulpWord[4], + saveq->iocb.ulpCommand, + saveq->iocb.ulpContext); + } + } + + return rc; +} + +/** + * lpfc_sli_rsp_pointers_error - Response ring pointer error handler + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function is called from the iocb ring event handlers when + * put pointer is ahead of the get pointer for a ring. This function signal + * an error attention condition to the worker thread and the worker + * thread will transition the HBA to offline state. + **/ +static void +lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; + /* + * Ring <ringno> handler: portRspPut <portRspPut> is bigger than + * rsp ring <portRspMax> + */ + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0312 Ring %d handler: portRspPut %d " + "is bigger than rsp ring %d\n", + pring->ringno, le32_to_cpu(pgp->rspPutInx), + pring->sli.sli3.numRiocb); + + phba->link_state = LPFC_HBA_ERROR; + + /* + * All error attention handlers are posted to + * worker thread + */ + phba->work_ha |= HA_ERATT; + phba->work_hs = HS_FFER3; + + lpfc_worker_wake_up(phba); + + return; +} + +/** + * lpfc_poll_eratt - Error attention polling timer timeout handler + * @ptr: Pointer to address of HBA context object. + * + * This function is invoked by the Error Attention polling timer when the + * timer times out. It will check the SLI Error Attention register for + * possible attention events. If so, it will post an Error Attention event + * and wake up worker thread to process it. Otherwise, it will set up the + * Error Attention polling timer for the next poll. + **/ +void lpfc_poll_eratt(unsigned long ptr) +{ + struct lpfc_hba *phba; + uint32_t eratt = 0; + uint64_t sli_intr, cnt; + + phba = (struct lpfc_hba *)ptr; + + /* Here we will also keep track of interrupts per sec of the hba */ + sli_intr = phba->sli.slistat.sli_intr; + + if (phba->sli.slistat.sli_prev_intr > sli_intr) + cnt = (((uint64_t)(-1) - phba->sli.slistat.sli_prev_intr) + + sli_intr); + else + cnt = (sli_intr - phba->sli.slistat.sli_prev_intr); + + /* 64-bit integer division not supporte on 32-bit x86 - use do_div */ + do_div(cnt, LPFC_ERATT_POLL_INTERVAL); + phba->sli.slistat.sli_ips = cnt; + + phba->sli.slistat.sli_prev_intr = sli_intr; + + /* Check chip HA register for error event */ + eratt = lpfc_sli_check_eratt(phba); + + if (eratt) + /* Tell the worker thread there is work to do */ + lpfc_worker_wake_up(phba); + else + /* Restart the timer for next eratt poll */ + mod_timer(&phba->eratt_poll, + jiffies + + msecs_to_jiffies(1000 * LPFC_ERATT_POLL_INTERVAL)); + return; +} + + +/** + * lpfc_sli_handle_fast_ring_event - Handle ring events on FCP ring + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @mask: Host attention register mask for this ring. + * + * This function is called from the interrupt context when there is a ring + * event for the fcp ring. The caller does not hold any lock. + * The function processes each response iocb in the response ring until it + * finds an iocb with LE bit set and chains all the iocbs up to the iocb with + * LE bit set. The function will call the completion handler of the command iocb + * if the response iocb indicates a completion for a command iocb or it is + * an abort completion. The function will call lpfc_sli_process_unsol_iocb + * function if this is an unsolicited iocb. + * This routine presumes LPFC_FCP_RING handling and doesn't bother + * to check it explicitly. + */ +int +lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, uint32_t mask) +{ + struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno]; + IOCB_t *irsp = NULL; + IOCB_t *entry = NULL; + struct lpfc_iocbq *cmdiocbq = NULL; + struct lpfc_iocbq rspiocbq; + uint32_t status; + uint32_t portRspPut, portRspMax; + int rc = 1; + lpfc_iocb_type type; + unsigned long iflag; + uint32_t rsp_cmpl = 0; + + spin_lock_irqsave(&phba->hbalock, iflag); + pring->stats.iocb_event++; + + /* + * The next available response entry should never exceed the maximum + * entries. If it does, treat it as an adapter hardware error. + */ + portRspMax = pring->sli.sli3.numRiocb; + portRspPut = le32_to_cpu(pgp->rspPutInx); + if (unlikely(portRspPut >= portRspMax)) { + lpfc_sli_rsp_pointers_error(phba, pring); + spin_unlock_irqrestore(&phba->hbalock, iflag); + return 1; + } + if (phba->fcp_ring_in_use) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + return 1; + } else + phba->fcp_ring_in_use = 1; + + rmb(); + while (pring->sli.sli3.rspidx != portRspPut) { + /* + * Fetch an entry off the ring and copy it into a local data + * structure. The copy involves a byte-swap since the + * network byte order and pci byte orders are different. + */ + entry = lpfc_resp_iocb(phba, pring); + phba->last_completion_time = jiffies; + + if (++pring->sli.sli3.rspidx >= portRspMax) + pring->sli.sli3.rspidx = 0; + + lpfc_sli_pcimem_bcopy((uint32_t *) entry, + (uint32_t *) &rspiocbq.iocb, + phba->iocb_rsp_size); + INIT_LIST_HEAD(&(rspiocbq.list)); + irsp = &rspiocbq.iocb; + + type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK); + pring->stats.iocb_rsp++; + rsp_cmpl++; + + if (unlikely(irsp->ulpStatus)) { + /* + * If resource errors reported from HBA, reduce + * queuedepths of the SCSI device. + */ + if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && + ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == + IOERR_NO_RESOURCES)) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + phba->lpfc_rampdown_queue_depth(phba); + spin_lock_irqsave(&phba->hbalock, iflag); + } + + /* Rsp ring <ringno> error: IOCB */ + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0336 Rsp Ring %d error: IOCB Data: " + "x%x x%x x%x x%x x%x x%x x%x x%x\n", + pring->ringno, + irsp->un.ulpWord[0], + irsp->un.ulpWord[1], + irsp->un.ulpWord[2], + irsp->un.ulpWord[3], + irsp->un.ulpWord[4], + irsp->un.ulpWord[5], + *(uint32_t *)&irsp->un1, + *((uint32_t *)&irsp->un1 + 1)); + } + + switch (type) { + case LPFC_ABORT_IOCB: + case LPFC_SOL_IOCB: + /* + * Idle exchange closed via ABTS from port. No iocb + * resources need to be recovered. + */ + if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) { + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0333 IOCB cmd 0x%x" + " processed. Skipping" + " completion\n", + irsp->ulpCommand); + break; + } + + cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring, + &rspiocbq); + if (unlikely(!cmdiocbq)) + break; + if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) + cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED; + if (cmdiocbq->iocb_cmpl) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, + &rspiocbq); + spin_lock_irqsave(&phba->hbalock, iflag); + } + break; + case LPFC_UNSOL_IOCB: + spin_unlock_irqrestore(&phba->hbalock, iflag); + lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq); + spin_lock_irqsave(&phba->hbalock, iflag); + break; + default: + if (irsp->ulpCommand == CMD_ADAPTER_MSG) { + char adaptermsg[LPFC_MAX_ADPTMSG]; + memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); + memcpy(&adaptermsg[0], (uint8_t *) irsp, + MAX_MSG_DATA); + dev_warn(&((phba->pcidev)->dev), + "lpfc%d: %s\n", + phba->brd_no, adaptermsg); + } else { + /* Unknown IOCB command */ + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0334 Unknown IOCB command " + "Data: x%x, x%x x%x x%x x%x\n", + type, irsp->ulpCommand, + irsp->ulpStatus, + irsp->ulpIoTag, + irsp->ulpContext); + } + break; + } + + /* + * The response IOCB has been processed. Update the ring + * pointer in SLIM. If the port response put pointer has not + * been updated, sync the pgp->rspPutInx and fetch the new port + * response put pointer. + */ + writel(pring->sli.sli3.rspidx, + &phba->host_gp[pring->ringno].rspGetInx); + + if (pring->sli.sli3.rspidx == portRspPut) + portRspPut = le32_to_cpu(pgp->rspPutInx); + } + + if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) { + pring->stats.iocb_rsp_full++; + status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); + writel(status, phba->CAregaddr); + readl(phba->CAregaddr); + } + if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { + pring->flag &= ~LPFC_CALL_RING_AVAILABLE; + pring->stats.iocb_cmd_empty++; + + /* Force update of the local copy of cmdGetInx */ + pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx); + lpfc_sli_resume_iocb(phba, pring); + + if ((pring->lpfc_sli_cmd_available)) + (pring->lpfc_sli_cmd_available) (phba, pring); + + } + + phba->fcp_ring_in_use = 0; + spin_unlock_irqrestore(&phba->hbalock, iflag); + return rc; +} + +/** + * lpfc_sli_sp_handle_rspiocb - Handle slow-path response iocb + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @rspiocbp: Pointer to driver response IOCB object. + * + * This function is called from the worker thread when there is a slow-path + * response IOCB to process. This function chains all the response iocbs until + * seeing the iocb with the LE bit set. The function will call + * lpfc_sli_process_sol_iocb function if the response iocb indicates a + * completion of a command iocb. The function will call the + * lpfc_sli_process_unsol_iocb function if this is an unsolicited iocb. + * The function frees the resources or calls the completion handler if this + * iocb is an abort completion. The function returns NULL when the response + * iocb has the LE bit set and all the chained iocbs are processed, otherwise + * this function shall chain the iocb on to the iocb_continueq and return the + * response iocb passed in. + **/ +static struct lpfc_iocbq * +lpfc_sli_sp_handle_rspiocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *rspiocbp) +{ + struct lpfc_iocbq *saveq; + struct lpfc_iocbq *cmdiocbp; + struct lpfc_iocbq *next_iocb; + IOCB_t *irsp = NULL; + uint32_t free_saveq; + uint8_t iocb_cmd_type; + lpfc_iocb_type type; + unsigned long iflag; + int rc; + + spin_lock_irqsave(&phba->hbalock, iflag); + /* First add the response iocb to the countinueq list */ + list_add_tail(&rspiocbp->list, &(pring->iocb_continueq)); + pring->iocb_continueq_cnt++; + + /* Now, determine whether the list is completed for processing */ + irsp = &rspiocbp->iocb; + if (irsp->ulpLe) { + /* + * By default, the driver expects to free all resources + * associated with this iocb completion. + */ + free_saveq = 1; + saveq = list_get_first(&pring->iocb_continueq, + struct lpfc_iocbq, list); + irsp = &(saveq->iocb); + list_del_init(&pring->iocb_continueq); + pring->iocb_continueq_cnt = 0; + + pring->stats.iocb_rsp++; + + /* + * If resource errors reported from HBA, reduce + * queuedepths of the SCSI device. + */ + if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) && + ((irsp->un.ulpWord[4] & IOERR_PARAM_MASK) == + IOERR_NO_RESOURCES)) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + phba->lpfc_rampdown_queue_depth(phba); + spin_lock_irqsave(&phba->hbalock, iflag); + } + + if (irsp->ulpStatus) { + /* Rsp ring <ringno> error: IOCB */ + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0328 Rsp Ring %d error: " + "IOCB Data: " + "x%x x%x x%x x%x " + "x%x x%x x%x x%x " + "x%x x%x x%x x%x " + "x%x x%x x%x x%x\n", + pring->ringno, + irsp->un.ulpWord[0], + irsp->un.ulpWord[1], + irsp->un.ulpWord[2], + irsp->un.ulpWord[3], + irsp->un.ulpWord[4], + irsp->un.ulpWord[5], + *(((uint32_t *) irsp) + 6), + *(((uint32_t *) irsp) + 7), + *(((uint32_t *) irsp) + 8), + *(((uint32_t *) irsp) + 9), + *(((uint32_t *) irsp) + 10), + *(((uint32_t *) irsp) + 11), + *(((uint32_t *) irsp) + 12), + *(((uint32_t *) irsp) + 13), + *(((uint32_t *) irsp) + 14), + *(((uint32_t *) irsp) + 15)); + } + + /* + * Fetch the IOCB command type and call the correct completion + * routine. Solicited and Unsolicited IOCBs on the ELS ring + * get freed back to the lpfc_iocb_list by the discovery + * kernel thread. + */ + iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK; + type = lpfc_sli_iocb_cmd_type(iocb_cmd_type); + switch (type) { + case LPFC_SOL_IOCB: + spin_unlock_irqrestore(&phba->hbalock, iflag); + rc = lpfc_sli_process_sol_iocb(phba, pring, saveq); + spin_lock_irqsave(&phba->hbalock, iflag); + break; + + case LPFC_UNSOL_IOCB: + spin_unlock_irqrestore(&phba->hbalock, iflag); + rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq); + spin_lock_irqsave(&phba->hbalock, iflag); + if (!rc) + free_saveq = 0; + break; + + case LPFC_ABORT_IOCB: + cmdiocbp = NULL; + if (irsp->ulpCommand != CMD_XRI_ABORTED_CX) + cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, + saveq); + if (cmdiocbp) { + /* Call the specified completion routine */ + if (cmdiocbp->iocb_cmpl) { + spin_unlock_irqrestore(&phba->hbalock, + iflag); + (cmdiocbp->iocb_cmpl)(phba, cmdiocbp, + saveq); + spin_lock_irqsave(&phba->hbalock, + iflag); + } else + __lpfc_sli_release_iocbq(phba, + cmdiocbp); + } + break; + + case LPFC_UNKNOWN_IOCB: + if (irsp->ulpCommand == CMD_ADAPTER_MSG) { + char adaptermsg[LPFC_MAX_ADPTMSG]; + memset(adaptermsg, 0, LPFC_MAX_ADPTMSG); + memcpy(&adaptermsg[0], (uint8_t *)irsp, + MAX_MSG_DATA); + dev_warn(&((phba->pcidev)->dev), + "lpfc%d: %s\n", + phba->brd_no, adaptermsg); + } else { + /* Unknown IOCB command */ + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0335 Unknown IOCB " + "command Data: x%x " + "x%x x%x x%x\n", + irsp->ulpCommand, + irsp->ulpStatus, + irsp->ulpIoTag, + irsp->ulpContext); + } + break; + } + + if (free_saveq) { + list_for_each_entry_safe(rspiocbp, next_iocb, + &saveq->list, list) { + list_del_init(&rspiocbp->list); + __lpfc_sli_release_iocbq(phba, rspiocbp); + } + __lpfc_sli_release_iocbq(phba, saveq); + } + rspiocbp = NULL; + } + spin_unlock_irqrestore(&phba->hbalock, iflag); + return rspiocbp; +} + +/** + * lpfc_sli_handle_slow_ring_event - Wrapper func for handling slow-path iocbs + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @mask: Host attention register mask for this ring. + * + * This routine wraps the actual slow_ring event process routine from the + * API jump table function pointer from the lpfc_hba struct. + **/ +void +lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, uint32_t mask) +{ + phba->lpfc_sli_handle_slow_ring_event(phba, pring, mask); +} + +/** + * lpfc_sli_handle_slow_ring_event_s3 - Handle SLI3 ring event for non-FCP rings + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @mask: Host attention register mask for this ring. + * + * This function is called from the worker thread when there is a ring event + * for non-fcp rings. The caller does not hold any lock. The function will + * remove each response iocb in the response ring and calls the handle + * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it. + **/ +static void +lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, uint32_t mask) +{ + struct lpfc_pgp *pgp; + IOCB_t *entry; + IOCB_t *irsp = NULL; + struct lpfc_iocbq *rspiocbp = NULL; + uint32_t portRspPut, portRspMax; + unsigned long iflag; + uint32_t status; + + pgp = &phba->port_gp[pring->ringno]; + spin_lock_irqsave(&phba->hbalock, iflag); + pring->stats.iocb_event++; + + /* + * The next available response entry should never exceed the maximum + * entries. If it does, treat it as an adapter hardware error. + */ + portRspMax = pring->sli.sli3.numRiocb; + portRspPut = le32_to_cpu(pgp->rspPutInx); + if (portRspPut >= portRspMax) { + /* + * Ring <ringno> handler: portRspPut <portRspPut> is bigger than + * rsp ring <portRspMax> + */ + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0303 Ring %d handler: portRspPut %d " + "is bigger than rsp ring %d\n", + pring->ringno, portRspPut, portRspMax); + + phba->link_state = LPFC_HBA_ERROR; + spin_unlock_irqrestore(&phba->hbalock, iflag); + + phba->work_hs = HS_FFER3; + lpfc_handle_eratt(phba); + + return; + } + + rmb(); + while (pring->sli.sli3.rspidx != portRspPut) { + /* + * Build a completion list and call the appropriate handler. + * The process is to get the next available response iocb, get + * a free iocb from the list, copy the response data into the + * free iocb, insert to the continuation list, and update the + * next response index to slim. This process makes response + * iocb's in the ring available to DMA as fast as possible but + * pays a penalty for a copy operation. Since the iocb is + * only 32 bytes, this penalty is considered small relative to + * the PCI reads for register values and a slim write. When + * the ulpLe field is set, the entire Command has been + * received. + */ + entry = lpfc_resp_iocb(phba, pring); + + phba->last_completion_time = jiffies; + rspiocbp = __lpfc_sli_get_iocbq(phba); + if (rspiocbp == NULL) { + printk(KERN_ERR "%s: out of buffers! Failing " + "completion.\n", __func__); + break; + } + + lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, + phba->iocb_rsp_size); + irsp = &rspiocbp->iocb; + + if (++pring->sli.sli3.rspidx >= portRspMax) + pring->sli.sli3.rspidx = 0; + + if (pring->ringno == LPFC_ELS_RING) { + lpfc_debugfs_slow_ring_trc(phba, + "IOCB rsp ring: wd4:x%08x wd6:x%08x wd7:x%08x", + *(((uint32_t *) irsp) + 4), + *(((uint32_t *) irsp) + 6), + *(((uint32_t *) irsp) + 7)); + } + + writel(pring->sli.sli3.rspidx, + &phba->host_gp[pring->ringno].rspGetInx); + + spin_unlock_irqrestore(&phba->hbalock, iflag); + /* Handle the response IOCB */ + rspiocbp = lpfc_sli_sp_handle_rspiocb(phba, pring, rspiocbp); + spin_lock_irqsave(&phba->hbalock, iflag); + + /* + * If the port response put pointer has not been updated, sync + * the pgp->rspPutInx in the MAILBOX_tand fetch the new port + * response put pointer. + */ + if (pring->sli.sli3.rspidx == portRspPut) { + portRspPut = le32_to_cpu(pgp->rspPutInx); + } + } /* while (pring->sli.sli3.rspidx != portRspPut) */ + + if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) { + /* At least one response entry has been freed */ + pring->stats.iocb_rsp_full++; + /* SET RxRE_RSP in Chip Att register */ + status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4)); + writel(status, phba->CAregaddr); + readl(phba->CAregaddr); /* flush */ + } + if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) { + pring->flag &= ~LPFC_CALL_RING_AVAILABLE; + pring->stats.iocb_cmd_empty++; + + /* Force update of the local copy of cmdGetInx */ + pring->sli.sli3.local_getidx = le32_to_cpu(pgp->cmdGetInx); + lpfc_sli_resume_iocb(phba, pring); + + if ((pring->lpfc_sli_cmd_available)) + (pring->lpfc_sli_cmd_available) (phba, pring); + + } + + spin_unlock_irqrestore(&phba->hbalock, iflag); + return; +} + +/** + * lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @mask: Host attention register mask for this ring. + * + * This function is called from the worker thread when there is a pending + * ELS response iocb on the driver internal slow-path response iocb worker + * queue. The caller does not hold any lock. The function will remove each + * response iocb from the response worker queue and calls the handle + * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it. + **/ +static void +lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, uint32_t mask) +{ + struct lpfc_iocbq *irspiocbq; + struct hbq_dmabuf *dmabuf; + struct lpfc_cq_event *cq_event; + unsigned long iflag; + + spin_lock_irqsave(&phba->hbalock, iflag); + phba->hba_flag &= ~HBA_SP_QUEUE_EVT; + spin_unlock_irqrestore(&phba->hbalock, iflag); + while (!list_empty(&phba->sli4_hba.sp_queue_event)) { + /* Get the response iocb from the head of work queue */ + spin_lock_irqsave(&phba->hbalock, iflag); + list_remove_head(&phba->sli4_hba.sp_queue_event, + cq_event, struct lpfc_cq_event, list); + spin_unlock_irqrestore(&phba->hbalock, iflag); + + switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) { + case CQE_CODE_COMPL_WQE: + irspiocbq = container_of(cq_event, struct lpfc_iocbq, + cq_event); + /* Translate ELS WCQE to response IOCBQ */ + irspiocbq = lpfc_sli4_els_wcqe_to_rspiocbq(phba, + irspiocbq); + if (irspiocbq) + lpfc_sli_sp_handle_rspiocb(phba, pring, + irspiocbq); + break; + case CQE_CODE_RECEIVE: + case CQE_CODE_RECEIVE_V1: + dmabuf = container_of(cq_event, struct hbq_dmabuf, + cq_event); + lpfc_sli4_handle_received_buffer(phba, dmabuf); + break; + default: + break; + } + } +} + +/** + * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function aborts all iocbs in the given ring and frees all the iocb + * objects in txq. This function issues an abort iocb for all the iocb commands + * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before + * the return of this function. The caller is not required to hold any locks. + **/ +void +lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring) +{ + LIST_HEAD(completions); + struct lpfc_iocbq *iocb, *next_iocb; + + if (pring->ringno == LPFC_ELS_RING) { + lpfc_fabric_abort_hba(phba); + } + + /* Error everything on txq and txcmplq + * First do the txq. + */ + if (phba->sli_rev >= LPFC_SLI_REV4) { + spin_lock_irq(&pring->ring_lock); + list_splice_init(&pring->txq, &completions); + pring->txq_cnt = 0; + spin_unlock_irq(&pring->ring_lock); + + spin_lock_irq(&phba->hbalock); + /* Next issue ABTS for everything on the txcmplq */ + list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) + lpfc_sli_issue_abort_iotag(phba, pring, iocb); + spin_unlock_irq(&phba->hbalock); + } else { + spin_lock_irq(&phba->hbalock); + list_splice_init(&pring->txq, &completions); + pring->txq_cnt = 0; + + /* Next issue ABTS for everything on the txcmplq */ + list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) + lpfc_sli_issue_abort_iotag(phba, pring, iocb); + spin_unlock_irq(&phba->hbalock); + } + + /* Cancel all the IOCBs from the completions list */ + lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, + IOERR_SLI_ABORTED); +} + +/** + * lpfc_sli_abort_fcp_rings - Abort all iocbs in all FCP rings + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * + * This function aborts all iocbs in FCP rings and frees all the iocb + * objects in txq. This function issues an abort iocb for all the iocb commands + * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before + * the return of this function. The caller is not required to hold any locks. + **/ +void +lpfc_sli_abort_fcp_rings(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli = &phba->sli; + struct lpfc_sli_ring *pring; + uint32_t i; + + /* Look on all the FCP Rings for the iotag */ + if (phba->sli_rev >= LPFC_SLI_REV4) { + for (i = 0; i < phba->cfg_fcp_io_channel; i++) { + pring = &psli->ring[i + MAX_SLI3_CONFIGURED_RINGS]; + lpfc_sli_abort_iocb_ring(phba, pring); + } + } else { + pring = &psli->ring[psli->fcp_ring]; + lpfc_sli_abort_iocb_ring(phba, pring); + } +} + + +/** + * lpfc_sli_flush_fcp_rings - flush all iocbs in the fcp ring + * @phba: Pointer to HBA context object. + * + * This function flushes all iocbs in the fcp ring and frees all the iocb + * objects in txq and txcmplq. This function will not issue abort iocbs + * for all the iocb commands in txcmplq, they will just be returned with + * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI + * slot has been permanently disabled. + **/ +void +lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba) +{ + LIST_HEAD(txq); + LIST_HEAD(txcmplq); + struct lpfc_sli *psli = &phba->sli; + struct lpfc_sli_ring *pring; + uint32_t i; + + spin_lock_irq(&phba->hbalock); + /* Indicate the I/O queues are flushed */ + phba->hba_flag |= HBA_FCP_IOQ_FLUSH; + spin_unlock_irq(&phba->hbalock); + + /* Look on all the FCP Rings for the iotag */ + if (phba->sli_rev >= LPFC_SLI_REV4) { + for (i = 0; i < phba->cfg_fcp_io_channel; i++) { + pring = &psli->ring[i + MAX_SLI3_CONFIGURED_RINGS]; + + spin_lock_irq(&pring->ring_lock); + /* Retrieve everything on txq */ + list_splice_init(&pring->txq, &txq); + /* Retrieve everything on the txcmplq */ + list_splice_init(&pring->txcmplq, &txcmplq); + pring->txq_cnt = 0; + pring->txcmplq_cnt = 0; + spin_unlock_irq(&pring->ring_lock); + + /* Flush the txq */ + lpfc_sli_cancel_iocbs(phba, &txq, + IOSTAT_LOCAL_REJECT, + IOERR_SLI_DOWN); + /* Flush the txcmpq */ + lpfc_sli_cancel_iocbs(phba, &txcmplq, + IOSTAT_LOCAL_REJECT, + IOERR_SLI_DOWN); + } + } else { + pring = &psli->ring[psli->fcp_ring]; + + spin_lock_irq(&phba->hbalock); + /* Retrieve everything on txq */ + list_splice_init(&pring->txq, &txq); + /* Retrieve everything on the txcmplq */ + list_splice_init(&pring->txcmplq, &txcmplq); + pring->txq_cnt = 0; + pring->txcmplq_cnt = 0; + spin_unlock_irq(&phba->hbalock); + + /* Flush the txq */ + lpfc_sli_cancel_iocbs(phba, &txq, IOSTAT_LOCAL_REJECT, + IOERR_SLI_DOWN); + /* Flush the txcmpq */ + lpfc_sli_cancel_iocbs(phba, &txcmplq, IOSTAT_LOCAL_REJECT, + IOERR_SLI_DOWN); + } +} + +/** + * lpfc_sli_brdready_s3 - Check for sli3 host ready status + * @phba: Pointer to HBA context object. + * @mask: Bit mask to be checked. + * + * This function reads the host status register and compares + * with the provided bit mask to check if HBA completed + * the restart. This function will wait in a loop for the + * HBA to complete restart. If the HBA does not restart within + * 15 iterations, the function will reset the HBA again. The + * function returns 1 when HBA fail to restart otherwise returns + * zero. + **/ +static int +lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask) +{ + uint32_t status; + int i = 0; + int retval = 0; + + /* Read the HBA Host Status Register */ + if (lpfc_readl(phba->HSregaddr, &status)) + return 1; + + /* + * Check status register every 100ms for 5 retries, then every + * 500ms for 5, then every 2.5 sec for 5, then reset board and + * every 2.5 sec for 4. + * Break our of the loop if errors occurred during init. + */ + while (((status & mask) != mask) && + !(status & HS_FFERM) && + i++ < 20) { + + if (i <= 5) + msleep(10); + else if (i <= 10) + msleep(500); + else + msleep(2500); + + if (i == 15) { + /* Do post */ + phba->pport->port_state = LPFC_VPORT_UNKNOWN; + lpfc_sli_brdrestart(phba); + } + /* Read the HBA Host Status Register */ + if (lpfc_readl(phba->HSregaddr, &status)) { + retval = 1; + break; + } + } + + /* Check to see if any errors occurred during init */ + if ((status & HS_FFERM) || (i >= 20)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2751 Adapter failed to restart, " + "status reg x%x, FW Data: A8 x%x AC x%x\n", + status, + readl(phba->MBslimaddr + 0xa8), + readl(phba->MBslimaddr + 0xac)); + phba->link_state = LPFC_HBA_ERROR; + retval = 1; + } + + return retval; +} + +/** + * lpfc_sli_brdready_s4 - Check for sli4 host ready status + * @phba: Pointer to HBA context object. + * @mask: Bit mask to be checked. + * + * This function checks the host status register to check if HBA is + * ready. This function will wait in a loop for the HBA to be ready + * If the HBA is not ready , the function will will reset the HBA PCI + * function again. The function returns 1 when HBA fail to be ready + * otherwise returns zero. + **/ +static int +lpfc_sli_brdready_s4(struct lpfc_hba *phba, uint32_t mask) +{ + uint32_t status; + int retval = 0; + + /* Read the HBA Host Status Register */ + status = lpfc_sli4_post_status_check(phba); + + if (status) { + phba->pport->port_state = LPFC_VPORT_UNKNOWN; + lpfc_sli_brdrestart(phba); + status = lpfc_sli4_post_status_check(phba); + } + + /* Check to see if any errors occurred during init */ + if (status) { + phba->link_state = LPFC_HBA_ERROR; + retval = 1; + } else + phba->sli4_hba.intr_enable = 0; + + return retval; +} + +/** + * lpfc_sli_brdready - Wrapper func for checking the hba readyness + * @phba: Pointer to HBA context object. + * @mask: Bit mask to be checked. + * + * This routine wraps the actual SLI3 or SLI4 hba readyness check routine + * from the API jump table function pointer from the lpfc_hba struct. + **/ +int +lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask) +{ + return phba->lpfc_sli_brdready(phba, mask); +} + +#define BARRIER_TEST_PATTERN (0xdeadbeef) + +/** + * lpfc_reset_barrier - Make HBA ready for HBA reset + * @phba: Pointer to HBA context object. + * + * This function is called before resetting an HBA. This function is called + * with hbalock held and requests HBA to quiesce DMAs before a reset. + **/ +void lpfc_reset_barrier(struct lpfc_hba *phba) +{ + uint32_t __iomem *resp_buf; + uint32_t __iomem *mbox_buf; + volatile uint32_t mbox; + uint32_t hc_copy, ha_copy, resp_data; + int i; + uint8_t hdrtype; + + pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype); + if (hdrtype != 0x80 || + (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID && + FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID)) + return; + + /* + * Tell the other part of the chip to suspend temporarily all + * its DMA activity. + */ + resp_buf = phba->MBslimaddr; + + /* Disable the error attention */ + if (lpfc_readl(phba->HCregaddr, &hc_copy)) + return; + writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + phba->link_flag |= LS_IGNORE_ERATT; + + if (lpfc_readl(phba->HAregaddr, &ha_copy)) + return; + if (ha_copy & HA_ERATT) { + /* Clear Chip error bit */ + writel(HA_ERATT, phba->HAregaddr); + phba->pport->stopped = 1; + } + + mbox = 0; + ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD; + ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP; + + writel(BARRIER_TEST_PATTERN, (resp_buf + 1)); + mbox_buf = phba->MBslimaddr; + writel(mbox, mbox_buf); + + for (i = 0; i < 50; i++) { + if (lpfc_readl((resp_buf + 1), &resp_data)) + return; + if (resp_data != ~(BARRIER_TEST_PATTERN)) + mdelay(1); + else + break; + } + resp_data = 0; + if (lpfc_readl((resp_buf + 1), &resp_data)) + return; + if (resp_data != ~(BARRIER_TEST_PATTERN)) { + if (phba->sli.sli_flag & LPFC_SLI_ACTIVE || + phba->pport->stopped) + goto restore_hc; + else + goto clear_errat; + } + + ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST; + resp_data = 0; + for (i = 0; i < 500; i++) { + if (lpfc_readl(resp_buf, &resp_data)) + return; + if (resp_data != mbox) + mdelay(1); + else + break; + } + +clear_errat: + + while (++i < 500) { + if (lpfc_readl(phba->HAregaddr, &ha_copy)) + return; + if (!(ha_copy & HA_ERATT)) + mdelay(1); + else + break; + } + + if (readl(phba->HAregaddr) & HA_ERATT) { + writel(HA_ERATT, phba->HAregaddr); + phba->pport->stopped = 1; + } + +restore_hc: + phba->link_flag &= ~LS_IGNORE_ERATT; + writel(hc_copy, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ +} + +/** + * lpfc_sli_brdkill - Issue a kill_board mailbox command + * @phba: Pointer to HBA context object. + * + * This function issues a kill_board mailbox command and waits for + * the error attention interrupt. This function is called for stopping + * the firmware processing. The caller is not required to hold any + * locks. This function calls lpfc_hba_down_post function to free + * any pending commands after the kill. The function will return 1 when it + * fails to kill the board else will return 0. + **/ +int +lpfc_sli_brdkill(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli; + LPFC_MBOXQ_t *pmb; + uint32_t status; + uint32_t ha_copy; + int retval; + int i = 0; + + psli = &phba->sli; + + /* Kill HBA */ + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0329 Kill HBA Data: x%x x%x\n", + phba->pport->port_state, psli->sli_flag); + + pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmb) + return 1; + + /* Disable the error attention */ + spin_lock_irq(&phba->hbalock); + if (lpfc_readl(phba->HCregaddr, &status)) { + spin_unlock_irq(&phba->hbalock); + mempool_free(pmb, phba->mbox_mem_pool); + return 1; + } + status &= ~HC_ERINT_ENA; + writel(status, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + phba->link_flag |= LS_IGNORE_ERATT; + spin_unlock_irq(&phba->hbalock); + + lpfc_kill_board(phba, pmb); + pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); + + if (retval != MBX_SUCCESS) { + if (retval != MBX_BUSY) + mempool_free(pmb, phba->mbox_mem_pool); + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2752 KILL_BOARD command failed retval %d\n", + retval); + spin_lock_irq(&phba->hbalock); + phba->link_flag &= ~LS_IGNORE_ERATT; + spin_unlock_irq(&phba->hbalock); + return 1; + } + + spin_lock_irq(&phba->hbalock); + psli->sli_flag &= ~LPFC_SLI_ACTIVE; + spin_unlock_irq(&phba->hbalock); + + mempool_free(pmb, phba->mbox_mem_pool); + + /* There is no completion for a KILL_BOARD mbox cmd. Check for an error + * attention every 100ms for 3 seconds. If we don't get ERATT after + * 3 seconds we still set HBA_ERROR state because the status of the + * board is now undefined. + */ + if (lpfc_readl(phba->HAregaddr, &ha_copy)) + return 1; + while ((i++ < 30) && !(ha_copy & HA_ERATT)) { + mdelay(100); + if (lpfc_readl(phba->HAregaddr, &ha_copy)) + return 1; + } + + del_timer_sync(&psli->mbox_tmo); + if (ha_copy & HA_ERATT) { + writel(HA_ERATT, phba->HAregaddr); + phba->pport->stopped = 1; + } + spin_lock_irq(&phba->hbalock); + psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + psli->mbox_active = NULL; + phba->link_flag &= ~LS_IGNORE_ERATT; + spin_unlock_irq(&phba->hbalock); + + lpfc_hba_down_post(phba); + phba->link_state = LPFC_HBA_ERROR; + + return ha_copy & HA_ERATT ? 0 : 1; +} + +/** + * lpfc_sli_brdreset - Reset a sli-2 or sli-3 HBA + * @phba: Pointer to HBA context object. + * + * This function resets the HBA by writing HC_INITFF to the control + * register. After the HBA resets, this function resets all the iocb ring + * indices. This function disables PCI layer parity checking during + * the reset. + * This function returns 0 always. + * The caller is not required to hold any locks. + **/ +int +lpfc_sli_brdreset(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli; + struct lpfc_sli_ring *pring; + uint16_t cfg_value; + int i; + + psli = &phba->sli; + + /* Reset HBA */ + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0325 Reset HBA Data: x%x x%x\n", + phba->pport->port_state, psli->sli_flag); + + /* perform board reset */ + phba->fc_eventTag = 0; + phba->link_events = 0; + phba->pport->fc_myDID = 0; + phba->pport->fc_prevDID = 0; + + /* Turn off parity checking and serr during the physical reset */ + pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value); + pci_write_config_word(phba->pcidev, PCI_COMMAND, + (cfg_value & + ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); + + psli->sli_flag &= ~(LPFC_SLI_ACTIVE | LPFC_PROCESS_LA); + + /* Now toggle INITFF bit in the Host Control Register */ + writel(HC_INITFF, phba->HCregaddr); + mdelay(1); + readl(phba->HCregaddr); /* flush */ + writel(0, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + + /* Restore PCI cmd register */ + pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value); + + /* Initialize relevant SLI info */ + for (i = 0; i < psli->num_rings; i++) { + pring = &psli->ring[i]; + pring->flag = 0; + pring->sli.sli3.rspidx = 0; + pring->sli.sli3.next_cmdidx = 0; + pring->sli.sli3.local_getidx = 0; + pring->sli.sli3.cmdidx = 0; + pring->missbufcnt = 0; + } + + phba->link_state = LPFC_WARM_START; + return 0; +} + +/** + * lpfc_sli4_brdreset - Reset a sli-4 HBA + * @phba: Pointer to HBA context object. + * + * This function resets a SLI4 HBA. This function disables PCI layer parity + * checking during resets the device. The caller is not required to hold + * any locks. + * + * This function returns 0 always. + **/ +int +lpfc_sli4_brdreset(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli = &phba->sli; + uint16_t cfg_value; + int rc = 0; + + /* Reset HBA */ + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0295 Reset HBA Data: x%x x%x x%x\n", + phba->pport->port_state, psli->sli_flag, + phba->hba_flag); + + /* perform board reset */ + phba->fc_eventTag = 0; + phba->link_events = 0; + phba->pport->fc_myDID = 0; + phba->pport->fc_prevDID = 0; + + spin_lock_irq(&phba->hbalock); + psli->sli_flag &= ~(LPFC_PROCESS_LA); + phba->fcf.fcf_flag = 0; + spin_unlock_irq(&phba->hbalock); + + /* SLI4 INTF 2: if FW dump is being taken skip INIT_PORT */ + if (phba->hba_flag & HBA_FW_DUMP_OP) { + phba->hba_flag &= ~HBA_FW_DUMP_OP; + return rc; + } + + /* Now physically reset the device */ + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "0389 Performing PCI function reset!\n"); + + /* Turn off parity checking and serr during the physical reset */ + pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value); + pci_write_config_word(phba->pcidev, PCI_COMMAND, (cfg_value & + ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR))); + + /* Perform FCoE PCI function reset before freeing queue memory */ + rc = lpfc_pci_function_reset(phba); + lpfc_sli4_queue_destroy(phba); + + /* Restore PCI cmd register */ + pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value); + + return rc; +} + +/** + * lpfc_sli_brdrestart_s3 - Restart a sli-3 hba + * @phba: Pointer to HBA context object. + * + * This function is called in the SLI initialization code path to + * restart the HBA. The caller is not required to hold any lock. + * This function writes MBX_RESTART mailbox command to the SLIM and + * resets the HBA. At the end of the function, it calls lpfc_hba_down_post + * function to free any pending commands. The function enables + * POST only during the first initialization. The function returns zero. + * The function does not guarantee completion of MBX_RESTART mailbox + * command before the return of this function. + **/ +static int +lpfc_sli_brdrestart_s3(struct lpfc_hba *phba) +{ + MAILBOX_t *mb; + struct lpfc_sli *psli; + volatile uint32_t word0; + void __iomem *to_slim; + uint32_t hba_aer_enabled; + + spin_lock_irq(&phba->hbalock); + + /* Take PCIe device Advanced Error Reporting (AER) state */ + hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED; + + psli = &phba->sli; + + /* Restart HBA */ + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0337 Restart HBA Data: x%x x%x\n", + phba->pport->port_state, psli->sli_flag); + + word0 = 0; + mb = (MAILBOX_t *) &word0; + mb->mbxCommand = MBX_RESTART; + mb->mbxHc = 1; + + lpfc_reset_barrier(phba); + + to_slim = phba->MBslimaddr; + writel(*(uint32_t *) mb, to_slim); + readl(to_slim); /* flush */ + + /* Only skip post after fc_ffinit is completed */ + if (phba->pport->port_state) + word0 = 1; /* This is really setting up word1 */ + else + word0 = 0; /* This is really setting up word1 */ + to_slim = phba->MBslimaddr + sizeof (uint32_t); + writel(*(uint32_t *) mb, to_slim); + readl(to_slim); /* flush */ + + lpfc_sli_brdreset(phba); + phba->pport->stopped = 0; + phba->link_state = LPFC_INIT_START; + phba->hba_flag = 0; + spin_unlock_irq(&phba->hbalock); + + memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets)); + psli->stats_start = get_seconds(); + + /* Give the INITFF and Post time to settle. */ + mdelay(100); + + /* Reset HBA AER if it was enabled, note hba_flag was reset above */ + if (hba_aer_enabled) + pci_disable_pcie_error_reporting(phba->pcidev); + + lpfc_hba_down_post(phba); + + return 0; +} + +/** + * lpfc_sli_brdrestart_s4 - Restart the sli-4 hba + * @phba: Pointer to HBA context object. + * + * This function is called in the SLI initialization code path to restart + * a SLI4 HBA. The caller is not required to hold any lock. + * At the end of the function, it calls lpfc_hba_down_post function to + * free any pending commands. + **/ +static int +lpfc_sli_brdrestart_s4(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli = &phba->sli; + uint32_t hba_aer_enabled; + int rc; + + /* Restart HBA */ + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0296 Restart HBA Data: x%x x%x\n", + phba->pport->port_state, psli->sli_flag); + + /* Take PCIe device Advanced Error Reporting (AER) state */ + hba_aer_enabled = phba->hba_flag & HBA_AER_ENABLED; + + rc = lpfc_sli4_brdreset(phba); + + spin_lock_irq(&phba->hbalock); + phba->pport->stopped = 0; + phba->link_state = LPFC_INIT_START; + phba->hba_flag = 0; + spin_unlock_irq(&phba->hbalock); + + memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets)); + psli->stats_start = get_seconds(); + + /* Reset HBA AER if it was enabled, note hba_flag was reset above */ + if (hba_aer_enabled) + pci_disable_pcie_error_reporting(phba->pcidev); + + lpfc_hba_down_post(phba); + + return rc; +} + +/** + * lpfc_sli_brdrestart - Wrapper func for restarting hba + * @phba: Pointer to HBA context object. + * + * This routine wraps the actual SLI3 or SLI4 hba restart routine from the + * API jump table function pointer from the lpfc_hba struct. +**/ +int +lpfc_sli_brdrestart(struct lpfc_hba *phba) +{ + return phba->lpfc_sli_brdrestart(phba); +} + +/** + * lpfc_sli_chipset_init - Wait for the restart of the HBA after a restart + * @phba: Pointer to HBA context object. + * + * This function is called after a HBA restart to wait for successful + * restart of the HBA. Successful restart of the HBA is indicated by + * HS_FFRDY and HS_MBRDY bits. If the HBA fails to restart even after 15 + * iteration, the function will restart the HBA again. The function returns + * zero if HBA successfully restarted else returns negative error code. + **/ +static int +lpfc_sli_chipset_init(struct lpfc_hba *phba) +{ + uint32_t status, i = 0; + + /* Read the HBA Host Status Register */ + if (lpfc_readl(phba->HSregaddr, &status)) + return -EIO; + + /* Check status register to see what current state is */ + i = 0; + while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) { + + /* Check every 10ms for 10 retries, then every 100ms for 90 + * retries, then every 1 sec for 50 retires for a total of + * ~60 seconds before reset the board again and check every + * 1 sec for 50 retries. The up to 60 seconds before the + * board ready is required by the Falcon FIPS zeroization + * complete, and any reset the board in between shall cause + * restart of zeroization, further delay the board ready. + */ + if (i++ >= 200) { + /* Adapter failed to init, timeout, status reg + <status> */ + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0436 Adapter failed to init, " + "timeout, status reg x%x, " + "FW Data: A8 x%x AC x%x\n", status, + readl(phba->MBslimaddr + 0xa8), + readl(phba->MBslimaddr + 0xac)); + phba->link_state = LPFC_HBA_ERROR; + return -ETIMEDOUT; + } + + /* Check to see if any errors occurred during init */ + if (status & HS_FFERM) { + /* ERROR: During chipset initialization */ + /* Adapter failed to init, chipset, status reg + <status> */ + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0437 Adapter failed to init, " + "chipset, status reg x%x, " + "FW Data: A8 x%x AC x%x\n", status, + readl(phba->MBslimaddr + 0xa8), + readl(phba->MBslimaddr + 0xac)); + phba->link_state = LPFC_HBA_ERROR; + return -EIO; + } + + if (i <= 10) + msleep(10); + else if (i <= 100) + msleep(100); + else + msleep(1000); + + if (i == 150) { + /* Do post */ + phba->pport->port_state = LPFC_VPORT_UNKNOWN; + lpfc_sli_brdrestart(phba); + } + /* Read the HBA Host Status Register */ + if (lpfc_readl(phba->HSregaddr, &status)) + return -EIO; + } + + /* Check to see if any errors occurred during init */ + if (status & HS_FFERM) { + /* ERROR: During chipset initialization */ + /* Adapter failed to init, chipset, status reg <status> */ + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0438 Adapter failed to init, chipset, " + "status reg x%x, " + "FW Data: A8 x%x AC x%x\n", status, + readl(phba->MBslimaddr + 0xa8), + readl(phba->MBslimaddr + 0xac)); + phba->link_state = LPFC_HBA_ERROR; + return -EIO; + } + + /* Clear all interrupt enable conditions */ + writel(0, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + + /* setup host attn register */ + writel(0xffffffff, phba->HAregaddr); + readl(phba->HAregaddr); /* flush */ + return 0; +} + +/** + * lpfc_sli_hbq_count - Get the number of HBQs to be configured + * + * This function calculates and returns the number of HBQs required to be + * configured. + **/ +int +lpfc_sli_hbq_count(void) +{ + return ARRAY_SIZE(lpfc_hbq_defs); +} + +/** + * lpfc_sli_hbq_entry_count - Calculate total number of hbq entries + * + * This function adds the number of hbq entries in every HBQ to get + * the total number of hbq entries required for the HBA and returns + * the total count. + **/ +static int +lpfc_sli_hbq_entry_count(void) +{ + int hbq_count = lpfc_sli_hbq_count(); + int count = 0; + int i; + + for (i = 0; i < hbq_count; ++i) + count += lpfc_hbq_defs[i]->entry_count; + return count; +} + +/** + * lpfc_sli_hbq_size - Calculate memory required for all hbq entries + * + * This function calculates amount of memory required for all hbq entries + * to be configured and returns the total memory required. + **/ +int +lpfc_sli_hbq_size(void) +{ + return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry); +} + +/** + * lpfc_sli_hbq_setup - configure and initialize HBQs + * @phba: Pointer to HBA context object. + * + * This function is called during the SLI initialization to configure + * all the HBQs and post buffers to the HBQ. The caller is not + * required to hold any locks. This function will return zero if successful + * else it will return negative error code. + **/ +static int +lpfc_sli_hbq_setup(struct lpfc_hba *phba) +{ + int hbq_count = lpfc_sli_hbq_count(); + LPFC_MBOXQ_t *pmb; + MAILBOX_t *pmbox; + uint32_t hbqno; + uint32_t hbq_entry_index; + + /* Get a Mailbox buffer to setup mailbox + * commands for HBA initialization + */ + pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + + if (!pmb) + return -ENOMEM; + + pmbox = &pmb->u.mb; + + /* Initialize the struct lpfc_sli_hbq structure for each hbq */ + phba->link_state = LPFC_INIT_MBX_CMDS; + phba->hbq_in_use = 1; + + hbq_entry_index = 0; + for (hbqno = 0; hbqno < hbq_count; ++hbqno) { + phba->hbqs[hbqno].next_hbqPutIdx = 0; + phba->hbqs[hbqno].hbqPutIdx = 0; + phba->hbqs[hbqno].local_hbqGetIdx = 0; + phba->hbqs[hbqno].entry_count = + lpfc_hbq_defs[hbqno]->entry_count; + lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno], + hbq_entry_index, pmb); + hbq_entry_index += phba->hbqs[hbqno].entry_count; + + if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) { + /* Adapter failed to init, mbxCmd <cmd> CFG_RING, + mbxStatus <status>, ring <num> */ + + lpfc_printf_log(phba, KERN_ERR, + LOG_SLI | LOG_VPORT, + "1805 Adapter failed to init. " + "Data: x%x x%x x%x\n", + pmbox->mbxCommand, + pmbox->mbxStatus, hbqno); + + phba->link_state = LPFC_HBA_ERROR; + mempool_free(pmb, phba->mbox_mem_pool); + return -ENXIO; + } + } + phba->hbq_count = hbq_count; + + mempool_free(pmb, phba->mbox_mem_pool); + + /* Initially populate or replenish the HBQs */ + for (hbqno = 0; hbqno < hbq_count; ++hbqno) + lpfc_sli_hbqbuf_init_hbqs(phba, hbqno); + return 0; +} + +/** + * lpfc_sli4_rb_setup - Initialize and post RBs to HBA + * @phba: Pointer to HBA context object. + * + * This function is called during the SLI initialization to configure + * all the HBQs and post buffers to the HBQ. The caller is not + * required to hold any locks. This function will return zero if successful + * else it will return negative error code. + **/ +static int +lpfc_sli4_rb_setup(struct lpfc_hba *phba) +{ + phba->hbq_in_use = 1; + phba->hbqs[0].entry_count = lpfc_hbq_defs[0]->entry_count; + phba->hbq_count = 1; + /* Initially populate or replenish the HBQs */ + lpfc_sli_hbqbuf_init_hbqs(phba, 0); + return 0; +} + +/** + * lpfc_sli_config_port - Issue config port mailbox command + * @phba: Pointer to HBA context object. + * @sli_mode: sli mode - 2/3 + * + * This function is called by the sli intialization code path + * to issue config_port mailbox command. This function restarts the + * HBA firmware and issues a config_port mailbox command to configure + * the SLI interface in the sli mode specified by sli_mode + * variable. The caller is not required to hold any locks. + * The function returns 0 if successful, else returns negative error + * code. + **/ +int +lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode) +{ + LPFC_MBOXQ_t *pmb; + uint32_t resetcount = 0, rc = 0, done = 0; + + pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmb) { + phba->link_state = LPFC_HBA_ERROR; + return -ENOMEM; + } + + phba->sli_rev = sli_mode; + while (resetcount < 2 && !done) { + spin_lock_irq(&phba->hbalock); + phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE; + spin_unlock_irq(&phba->hbalock); + phba->pport->port_state = LPFC_VPORT_UNKNOWN; + lpfc_sli_brdrestart(phba); + rc = lpfc_sli_chipset_init(phba); + if (rc) + break; + + spin_lock_irq(&phba->hbalock); + phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + spin_unlock_irq(&phba->hbalock); + resetcount++; + + /* Call pre CONFIG_PORT mailbox command initialization. A + * value of 0 means the call was successful. Any other + * nonzero value is a failure, but if ERESTART is returned, + * the driver may reset the HBA and try again. + */ + rc = lpfc_config_port_prep(phba); + if (rc == -ERESTART) { + phba->link_state = LPFC_LINK_UNKNOWN; + continue; + } else if (rc) + break; + + phba->link_state = LPFC_INIT_MBX_CMDS; + lpfc_config_port(phba, pmb); + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); + phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED | + LPFC_SLI3_HBQ_ENABLED | + LPFC_SLI3_CRP_ENABLED | + LPFC_SLI3_BG_ENABLED | + LPFC_SLI3_DSS_ENABLED); + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0442 Adapter failed to init, mbxCmd x%x " + "CONFIG_PORT, mbxStatus x%x Data: x%x\n", + pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0); + spin_lock_irq(&phba->hbalock); + phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE; + spin_unlock_irq(&phba->hbalock); + rc = -ENXIO; + } else { + /* Allow asynchronous mailbox command to go through */ + spin_lock_irq(&phba->hbalock); + phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; + spin_unlock_irq(&phba->hbalock); + done = 1; + + if ((pmb->u.mb.un.varCfgPort.casabt == 1) && + (pmb->u.mb.un.varCfgPort.gasabt == 0)) + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "3110 Port did not grant ASABT\n"); + } + } + if (!done) { + rc = -EINVAL; + goto do_prep_failed; + } + if (pmb->u.mb.un.varCfgPort.sli_mode == 3) { + if (!pmb->u.mb.un.varCfgPort.cMA) { + rc = -ENXIO; + goto do_prep_failed; + } + if (phba->max_vpi && pmb->u.mb.un.varCfgPort.gmv) { + phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; + phba->max_vpi = pmb->u.mb.un.varCfgPort.max_vpi; + phba->max_vports = (phba->max_vpi > phba->max_vports) ? + phba->max_vpi : phba->max_vports; + + } else + phba->max_vpi = 0; + phba->fips_level = 0; + phba->fips_spec_rev = 0; + if (pmb->u.mb.un.varCfgPort.gdss) { + phba->sli3_options |= LPFC_SLI3_DSS_ENABLED; + phba->fips_level = pmb->u.mb.un.varCfgPort.fips_level; + phba->fips_spec_rev = pmb->u.mb.un.varCfgPort.fips_rev; + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2850 Security Crypto Active. FIPS x%d " + "(Spec Rev: x%d)", + phba->fips_level, phba->fips_spec_rev); + } + if (pmb->u.mb.un.varCfgPort.sec_err) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2856 Config Port Security Crypto " + "Error: x%x ", + pmb->u.mb.un.varCfgPort.sec_err); + } + if (pmb->u.mb.un.varCfgPort.gerbm) + phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED; + if (pmb->u.mb.un.varCfgPort.gcrp) + phba->sli3_options |= LPFC_SLI3_CRP_ENABLED; + + phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get; + phba->port_gp = phba->mbox->us.s3_pgp.port; + + if (phba->cfg_enable_bg) { + if (pmb->u.mb.un.varCfgPort.gbg) + phba->sli3_options |= LPFC_SLI3_BG_ENABLED; + else + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0443 Adapter did not grant " + "BlockGuard\n"); + } + } else { + phba->hbq_get = NULL; + phba->port_gp = phba->mbox->us.s2.port; + phba->max_vpi = 0; + } +do_prep_failed: + mempool_free(pmb, phba->mbox_mem_pool); + return rc; +} + + +/** + * lpfc_sli_hba_setup - SLI intialization function + * @phba: Pointer to HBA context object. + * + * This function is the main SLI intialization function. This function + * is called by the HBA intialization code, HBA reset code and HBA + * error attention handler code. Caller is not required to hold any + * locks. This function issues config_port mailbox command to configure + * the SLI, setup iocb rings and HBQ rings. In the end the function + * calls the config_port_post function to issue init_link mailbox + * command and to start the discovery. The function will return zero + * if successful, else it will return negative error code. + **/ +int +lpfc_sli_hba_setup(struct lpfc_hba *phba) +{ + uint32_t rc; + int mode = 3, i; + int longs; + + switch (lpfc_sli_mode) { + case 2: + if (phba->cfg_enable_npiv) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, + "1824 NPIV enabled: Override lpfc_sli_mode " + "parameter (%d) to auto (0).\n", + lpfc_sli_mode); + break; + } + mode = 2; + break; + case 0: + case 3: + break; + default: + lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, + "1819 Unrecognized lpfc_sli_mode " + "parameter: %d.\n", lpfc_sli_mode); + + break; + } + + rc = lpfc_sli_config_port(phba, mode); + + if (rc && lpfc_sli_mode == 3) + lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT, + "1820 Unable to select SLI-3. " + "Not supported by adapter.\n"); + if (rc && mode != 2) + rc = lpfc_sli_config_port(phba, 2); + if (rc) + goto lpfc_sli_hba_setup_error; + + /* Enable PCIe device Advanced Error Reporting (AER) if configured */ + if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) { + rc = pci_enable_pcie_error_reporting(phba->pcidev); + if (!rc) { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2709 This device supports " + "Advanced Error Reporting (AER)\n"); + spin_lock_irq(&phba->hbalock); + phba->hba_flag |= HBA_AER_ENABLED; + spin_unlock_irq(&phba->hbalock); + } else { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2708 This device does not support " + "Advanced Error Reporting (AER): %d\n", + rc); + phba->cfg_aer_support = 0; + } + } + + if (phba->sli_rev == 3) { + phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE; + phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE; + } else { + phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE; + phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE; + phba->sli3_options = 0; + } + + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "0444 Firmware in SLI %x mode. Max_vpi %d\n", + phba->sli_rev, phba->max_vpi); + rc = lpfc_sli_ring_map(phba); + + if (rc) + goto lpfc_sli_hba_setup_error; + + /* Initialize VPIs. */ + if (phba->sli_rev == LPFC_SLI_REV3) { + /* + * The VPI bitmask and physical ID array are allocated + * and initialized once only - at driver load. A port + * reset doesn't need to reinitialize this memory. + */ + if ((phba->vpi_bmask == NULL) && (phba->vpi_ids == NULL)) { + longs = (phba->max_vpi + BITS_PER_LONG) / BITS_PER_LONG; + phba->vpi_bmask = kzalloc(longs * sizeof(unsigned long), + GFP_KERNEL); + if (!phba->vpi_bmask) { + rc = -ENOMEM; + goto lpfc_sli_hba_setup_error; + } + + phba->vpi_ids = kzalloc( + (phba->max_vpi+1) * sizeof(uint16_t), + GFP_KERNEL); + if (!phba->vpi_ids) { + kfree(phba->vpi_bmask); + rc = -ENOMEM; + goto lpfc_sli_hba_setup_error; + } + for (i = 0; i < phba->max_vpi; i++) + phba->vpi_ids[i] = i; + } + } + + /* Init HBQs */ + if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { + rc = lpfc_sli_hbq_setup(phba); + if (rc) + goto lpfc_sli_hba_setup_error; + } + spin_lock_irq(&phba->hbalock); + phba->sli.sli_flag |= LPFC_PROCESS_LA; + spin_unlock_irq(&phba->hbalock); + + rc = lpfc_config_port_post(phba); + if (rc) + goto lpfc_sli_hba_setup_error; + + return rc; + +lpfc_sli_hba_setup_error: + phba->link_state = LPFC_HBA_ERROR; + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0445 Firmware initialization failed\n"); + return rc; +} + +/** + * lpfc_sli4_read_fcoe_params - Read fcoe params from conf region + * @phba: Pointer to HBA context object. + * @mboxq: mailbox pointer. + * This function issue a dump mailbox command to read config region + * 23 and parse the records in the region and populate driver + * data structure. + **/ +static int +lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba) +{ + LPFC_MBOXQ_t *mboxq; + struct lpfc_dmabuf *mp; + struct lpfc_mqe *mqe; + uint32_t data_length; + int rc; + + /* Program the default value of vlan_id and fc_map */ + phba->valid_vlan = 0; + phba->fc_map[0] = LPFC_FCOE_FCF_MAP0; + phba->fc_map[1] = LPFC_FCOE_FCF_MAP1; + phba->fc_map[2] = LPFC_FCOE_FCF_MAP2; + + mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) + return -ENOMEM; + + mqe = &mboxq->u.mqe; + if (lpfc_sli4_dump_cfg_rg23(phba, mboxq)) { + rc = -ENOMEM; + goto out_free_mboxq; + } + + mp = (struct lpfc_dmabuf *) mboxq->context1; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "(%d):2571 Mailbox cmd x%x Status x%x " + "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x " + "x%x x%x x%x x%x x%x x%x x%x x%x x%x " + "CQ: x%x x%x x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, + bf_get(lpfc_mqe_command, mqe), + bf_get(lpfc_mqe_status, mqe), + mqe->un.mb_words[0], mqe->un.mb_words[1], + mqe->un.mb_words[2], mqe->un.mb_words[3], + mqe->un.mb_words[4], mqe->un.mb_words[5], + mqe->un.mb_words[6], mqe->un.mb_words[7], + mqe->un.mb_words[8], mqe->un.mb_words[9], + mqe->un.mb_words[10], mqe->un.mb_words[11], + mqe->un.mb_words[12], mqe->un.mb_words[13], + mqe->un.mb_words[14], mqe->un.mb_words[15], + mqe->un.mb_words[16], mqe->un.mb_words[50], + mboxq->mcqe.word0, + mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1, + mboxq->mcqe.trailer); + + if (rc) { + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + rc = -EIO; + goto out_free_mboxq; + } + data_length = mqe->un.mb_words[5]; + if (data_length > DMP_RGN23_SIZE) { + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + rc = -EIO; + goto out_free_mboxq; + } + + lpfc_parse_fcoe_conf(phba, mp->virt, data_length); + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + rc = 0; + +out_free_mboxq: + mempool_free(mboxq, phba->mbox_mem_pool); + return rc; +} + +/** + * lpfc_sli4_read_rev - Issue READ_REV and collect vpd data + * @phba: pointer to lpfc hba data structure. + * @mboxq: pointer to the LPFC_MBOXQ_t structure. + * @vpd: pointer to the memory to hold resulting port vpd data. + * @vpd_size: On input, the number of bytes allocated to @vpd. + * On output, the number of data bytes in @vpd. + * + * This routine executes a READ_REV SLI4 mailbox command. In + * addition, this routine gets the port vpd data. + * + * Return codes + * 0 - successful + * -ENOMEM - could not allocated memory. + **/ +static int +lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, + uint8_t *vpd, uint32_t *vpd_size) +{ + int rc = 0; + uint32_t dma_size; + struct lpfc_dmabuf *dmabuf; + struct lpfc_mqe *mqe; + + dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); + if (!dmabuf) + return -ENOMEM; + + /* + * Get a DMA buffer for the vpd data resulting from the READ_REV + * mailbox command. + */ + dma_size = *vpd_size; + dmabuf->virt = dma_zalloc_coherent(&phba->pcidev->dev, dma_size, + &dmabuf->phys, GFP_KERNEL); + if (!dmabuf->virt) { + kfree(dmabuf); + return -ENOMEM; + } + + /* + * The SLI4 implementation of READ_REV conflicts at word1, + * bits 31:16 and SLI4 adds vpd functionality not present + * in SLI3. This code corrects the conflicts. + */ + lpfc_read_rev(phba, mboxq); + mqe = &mboxq->u.mqe; + mqe->un.read_rev.vpd_paddr_high = putPaddrHigh(dmabuf->phys); + mqe->un.read_rev.vpd_paddr_low = putPaddrLow(dmabuf->phys); + mqe->un.read_rev.word1 &= 0x0000FFFF; + bf_set(lpfc_mbx_rd_rev_vpd, &mqe->un.read_rev, 1); + bf_set(lpfc_mbx_rd_rev_avail_len, &mqe->un.read_rev, dma_size); + + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + if (rc) { + dma_free_coherent(&phba->pcidev->dev, dma_size, + dmabuf->virt, dmabuf->phys); + kfree(dmabuf); + return -EIO; + } + + /* + * The available vpd length cannot be bigger than the + * DMA buffer passed to the port. Catch the less than + * case and update the caller's size. + */ + if (mqe->un.read_rev.avail_vpd_len < *vpd_size) + *vpd_size = mqe->un.read_rev.avail_vpd_len; + + memcpy(vpd, dmabuf->virt, *vpd_size); + + dma_free_coherent(&phba->pcidev->dev, dma_size, + dmabuf->virt, dmabuf->phys); + kfree(dmabuf); + return 0; +} + +/** + * lpfc_sli4_retrieve_pport_name - Retrieve SLI4 device physical port name + * @phba: pointer to lpfc hba data structure. + * + * This routine retrieves SLI4 device physical port name this PCI function + * is attached to. + * + * Return codes + * 0 - successful + * otherwise - failed to retrieve physical port name + **/ +static int +lpfc_sli4_retrieve_pport_name(struct lpfc_hba *phba) +{ + LPFC_MBOXQ_t *mboxq; + struct lpfc_mbx_get_cntl_attributes *mbx_cntl_attr; + struct lpfc_controller_attribute *cntl_attr; + struct lpfc_mbx_get_port_name *get_port_name; + void *virtaddr = NULL; + uint32_t alloclen, reqlen; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + char cport_name = 0; + int rc; + + /* We assume nothing at this point */ + phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_INVAL; + phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_NON; + + mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) + return -ENOMEM; + /* obtain link type and link number via READ_CONFIG */ + phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_INVAL; + lpfc_sli4_read_config(phba); + if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL) + goto retrieve_ppname; + + /* obtain link type and link number via COMMON_GET_CNTL_ATTRIBUTES */ + reqlen = sizeof(struct lpfc_mbx_get_cntl_attributes); + alloclen = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_GET_CNTL_ATTRIBUTES, reqlen, + LPFC_SLI4_MBX_NEMBED); + if (alloclen < reqlen) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3084 Allocated DMA memory size (%d) is " + "less than the requested DMA memory size " + "(%d)\n", alloclen, reqlen); + rc = -ENOMEM; + goto out_free_mboxq; + } + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + virtaddr = mboxq->sge_array->addr[0]; + mbx_cntl_attr = (struct lpfc_mbx_get_cntl_attributes *)virtaddr; + shdr = &mbx_cntl_attr->cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "3085 Mailbox x%x (x%x/x%x) failed, " + "rc:x%x, status:x%x, add_status:x%x\n", + bf_get(lpfc_mqe_command, &mboxq->u.mqe), + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + rc, shdr_status, shdr_add_status); + rc = -ENXIO; + goto out_free_mboxq; + } + cntl_attr = &mbx_cntl_attr->cntl_attr; + phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL; + phba->sli4_hba.lnk_info.lnk_tp = + bf_get(lpfc_cntl_attr_lnk_type, cntl_attr); + phba->sli4_hba.lnk_info.lnk_no = + bf_get(lpfc_cntl_attr_lnk_numb, cntl_attr); + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "3086 lnk_type:%d, lnk_numb:%d\n", + phba->sli4_hba.lnk_info.lnk_tp, + phba->sli4_hba.lnk_info.lnk_no); + +retrieve_ppname: + lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_GET_PORT_NAME, + sizeof(struct lpfc_mbx_get_port_name) - + sizeof(struct lpfc_sli4_cfg_mhdr), + LPFC_SLI4_MBX_EMBED); + get_port_name = &mboxq->u.mqe.un.get_port_name; + shdr = (union lpfc_sli4_cfg_shdr *)&get_port_name->header.cfg_shdr; + bf_set(lpfc_mbox_hdr_version, &shdr->request, LPFC_OPCODE_VERSION_1); + bf_set(lpfc_mbx_get_port_name_lnk_type, &get_port_name->u.request, + phba->sli4_hba.lnk_info.lnk_tp); + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "3087 Mailbox x%x (x%x/x%x) failed: " + "rc:x%x, status:x%x, add_status:x%x\n", + bf_get(lpfc_mqe_command, &mboxq->u.mqe), + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + rc, shdr_status, shdr_add_status); + rc = -ENXIO; + goto out_free_mboxq; + } + switch (phba->sli4_hba.lnk_info.lnk_no) { + case LPFC_LINK_NUMBER_0: + cport_name = bf_get(lpfc_mbx_get_port_name_name0, + &get_port_name->u.response); + phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET; + break; + case LPFC_LINK_NUMBER_1: + cport_name = bf_get(lpfc_mbx_get_port_name_name1, + &get_port_name->u.response); + phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET; + break; + case LPFC_LINK_NUMBER_2: + cport_name = bf_get(lpfc_mbx_get_port_name_name2, + &get_port_name->u.response); + phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET; + break; + case LPFC_LINK_NUMBER_3: + cport_name = bf_get(lpfc_mbx_get_port_name_name3, + &get_port_name->u.response); + phba->sli4_hba.pport_name_sta = LPFC_SLI4_PPNAME_GET; + break; + default: + break; + } + + if (phba->sli4_hba.pport_name_sta == LPFC_SLI4_PPNAME_GET) { + phba->Port[0] = cport_name; + phba->Port[1] = '\0'; + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "3091 SLI get port name: %s\n", phba->Port); + } + +out_free_mboxq: + if (rc != MBX_TIMEOUT) { + if (bf_get(lpfc_mqe_command, &mboxq->u.mqe) == MBX_SLI4_CONFIG) + lpfc_sli4_mbox_cmd_free(phba, mboxq); + else + mempool_free(mboxq, phba->mbox_mem_pool); + } + return rc; +} + +/** + * lpfc_sli4_arm_cqeq_intr - Arm sli-4 device completion and event queues + * @phba: pointer to lpfc hba data structure. + * + * This routine is called to explicitly arm the SLI4 device's completion and + * event queues + **/ +static void +lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba) +{ + int fcp_eqidx; + + lpfc_sli4_cq_release(phba->sli4_hba.mbx_cq, LPFC_QUEUE_REARM); + lpfc_sli4_cq_release(phba->sli4_hba.els_cq, LPFC_QUEUE_REARM); + fcp_eqidx = 0; + if (phba->sli4_hba.fcp_cq) { + do { + lpfc_sli4_cq_release(phba->sli4_hba.fcp_cq[fcp_eqidx], + LPFC_QUEUE_REARM); + } while (++fcp_eqidx < phba->cfg_fcp_io_channel); + } + + if (phba->cfg_fof) + lpfc_sli4_cq_release(phba->sli4_hba.oas_cq, LPFC_QUEUE_REARM); + + if (phba->sli4_hba.hba_eq) { + for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_io_channel; + fcp_eqidx++) + lpfc_sli4_eq_release(phba->sli4_hba.hba_eq[fcp_eqidx], + LPFC_QUEUE_REARM); + } + + if (phba->cfg_fof) + lpfc_sli4_eq_release(phba->sli4_hba.fof_eq, LPFC_QUEUE_REARM); +} + +/** + * lpfc_sli4_get_avail_extnt_rsrc - Get available resource extent count. + * @phba: Pointer to HBA context object. + * @type: The resource extent type. + * @extnt_count: buffer to hold port available extent count. + * @extnt_size: buffer to hold element count per extent. + * + * This function calls the port and retrievs the number of available + * extents and their size for a particular extent type. + * + * Returns: 0 if successful. Nonzero otherwise. + **/ +int +lpfc_sli4_get_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type, + uint16_t *extnt_count, uint16_t *extnt_size) +{ + int rc = 0; + uint32_t length; + uint32_t mbox_tmo; + struct lpfc_mbx_get_rsrc_extent_info *rsrc_info; + LPFC_MBOXQ_t *mbox; + + mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + + /* Find out how many extents are available for this resource type */ + length = (sizeof(struct lpfc_mbx_get_rsrc_extent_info) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_GET_RSRC_EXTENT_INFO, + length, LPFC_SLI4_MBX_EMBED); + + /* Send an extents count of 0 - the GET doesn't use it. */ + rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, 0, type, + LPFC_SLI4_MBX_EMBED); + if (unlikely(rc)) { + rc = -EIO; + goto err_exit; + } + + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + if (unlikely(rc)) { + rc = -EIO; + goto err_exit; + } + + rsrc_info = &mbox->u.mqe.un.rsrc_extent_info; + if (bf_get(lpfc_mbox_hdr_status, + &rsrc_info->header.cfg_shdr.response)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT, + "2930 Failed to get resource extents " + "Status 0x%x Add'l Status 0x%x\n", + bf_get(lpfc_mbox_hdr_status, + &rsrc_info->header.cfg_shdr.response), + bf_get(lpfc_mbox_hdr_add_status, + &rsrc_info->header.cfg_shdr.response)); + rc = -EIO; + goto err_exit; + } + + *extnt_count = bf_get(lpfc_mbx_get_rsrc_extent_info_cnt, + &rsrc_info->u.rsp); + *extnt_size = bf_get(lpfc_mbx_get_rsrc_extent_info_size, + &rsrc_info->u.rsp); + + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "3162 Retrieved extents type-%d from port: count:%d, " + "size:%d\n", type, *extnt_count, *extnt_size); + +err_exit: + mempool_free(mbox, phba->mbox_mem_pool); + return rc; +} + +/** + * lpfc_sli4_chk_avail_extnt_rsrc - Check for available SLI4 resource extents. + * @phba: Pointer to HBA context object. + * @type: The extent type to check. + * + * This function reads the current available extents from the port and checks + * if the extent count or extent size has changed since the last access. + * Callers use this routine post port reset to understand if there is a + * extent reprovisioning requirement. + * + * Returns: + * -Error: error indicates problem. + * 1: Extent count or size has changed. + * 0: No changes. + **/ +static int +lpfc_sli4_chk_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type) +{ + uint16_t curr_ext_cnt, rsrc_ext_cnt; + uint16_t size_diff, rsrc_ext_size; + int rc = 0; + struct lpfc_rsrc_blks *rsrc_entry; + struct list_head *rsrc_blk_list = NULL; + + size_diff = 0; + curr_ext_cnt = 0; + rc = lpfc_sli4_get_avail_extnt_rsrc(phba, type, + &rsrc_ext_cnt, + &rsrc_ext_size); + if (unlikely(rc)) + return -EIO; + + switch (type) { + case LPFC_RSC_TYPE_FCOE_RPI: + rsrc_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_VPI: + rsrc_blk_list = &phba->lpfc_vpi_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_XRI: + rsrc_blk_list = &phba->sli4_hba.lpfc_xri_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_VFI: + rsrc_blk_list = &phba->sli4_hba.lpfc_vfi_blk_list; + break; + default: + break; + } + + list_for_each_entry(rsrc_entry, rsrc_blk_list, list) { + curr_ext_cnt++; + if (rsrc_entry->rsrc_size != rsrc_ext_size) + size_diff++; + } + + if (curr_ext_cnt != rsrc_ext_cnt || size_diff != 0) + rc = 1; + + return rc; +} + +/** + * lpfc_sli4_cfg_post_extnts - + * @phba: Pointer to HBA context object. + * @extnt_cnt - number of available extents. + * @type - the extent type (rpi, xri, vfi, vpi). + * @emb - buffer to hold either MBX_EMBED or MBX_NEMBED operation. + * @mbox - pointer to the caller's allocated mailbox structure. + * + * This function executes the extents allocation request. It also + * takes care of the amount of memory needed to allocate or get the + * allocated extents. It is the caller's responsibility to evaluate + * the response. + * + * Returns: + * -Error: Error value describes the condition found. + * 0: if successful + **/ +static int +lpfc_sli4_cfg_post_extnts(struct lpfc_hba *phba, uint16_t extnt_cnt, + uint16_t type, bool *emb, LPFC_MBOXQ_t *mbox) +{ + int rc = 0; + uint32_t req_len; + uint32_t emb_len; + uint32_t alloc_len, mbox_tmo; + + /* Calculate the total requested length of the dma memory */ + req_len = extnt_cnt * sizeof(uint16_t); + + /* + * Calculate the size of an embedded mailbox. The uint32_t + * accounts for extents-specific word. + */ + emb_len = sizeof(MAILBOX_t) - sizeof(struct mbox_header) - + sizeof(uint32_t); + + /* + * Presume the allocation and response will fit into an embedded + * mailbox. If not true, reconfigure to a non-embedded mailbox. + */ + *emb = LPFC_SLI4_MBX_EMBED; + if (req_len > emb_len) { + req_len = extnt_cnt * sizeof(uint16_t) + + sizeof(union lpfc_sli4_cfg_shdr) + + sizeof(uint32_t); + *emb = LPFC_SLI4_MBX_NEMBED; + } + + alloc_len = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_ALLOC_RSRC_EXTENT, + req_len, *emb); + if (alloc_len < req_len) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2982 Allocated DMA memory size (x%x) is " + "less than the requested DMA memory " + "size (x%x)\n", alloc_len, req_len); + return -ENOMEM; + } + rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, extnt_cnt, type, *emb); + if (unlikely(rc)) + return -EIO; + + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + + if (unlikely(rc)) + rc = -EIO; + return rc; +} + +/** + * lpfc_sli4_alloc_extent - Allocate an SLI4 resource extent. + * @phba: Pointer to HBA context object. + * @type: The resource extent type to allocate. + * + * This function allocates the number of elements for the specified + * resource type. + **/ +static int +lpfc_sli4_alloc_extent(struct lpfc_hba *phba, uint16_t type) +{ + bool emb = false; + uint16_t rsrc_id_cnt, rsrc_cnt, rsrc_size; + uint16_t rsrc_id, rsrc_start, j, k; + uint16_t *ids; + int i, rc; + unsigned long longs; + unsigned long *bmask; + struct lpfc_rsrc_blks *rsrc_blks; + LPFC_MBOXQ_t *mbox; + uint32_t length; + struct lpfc_id_range *id_array = NULL; + void *virtaddr = NULL; + struct lpfc_mbx_nembed_rsrc_extent *n_rsrc; + struct lpfc_mbx_alloc_rsrc_extents *rsrc_ext; + struct list_head *ext_blk_list; + + rc = lpfc_sli4_get_avail_extnt_rsrc(phba, type, + &rsrc_cnt, + &rsrc_size); + if (unlikely(rc)) + return -EIO; + + if ((rsrc_cnt == 0) || (rsrc_size == 0)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT, + "3009 No available Resource Extents " + "for resource type 0x%x: Count: 0x%x, " + "Size 0x%x\n", type, rsrc_cnt, + rsrc_size); + return -ENOMEM; + } + + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_INIT | LOG_SLI, + "2903 Post resource extents type-0x%x: " + "count:%d, size %d\n", type, rsrc_cnt, rsrc_size); + + mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + + rc = lpfc_sli4_cfg_post_extnts(phba, rsrc_cnt, type, &emb, mbox); + if (unlikely(rc)) { + rc = -EIO; + goto err_exit; + } + + /* + * Figure out where the response is located. Then get local pointers + * to the response data. The port does not guarantee to respond to + * all extents counts request so update the local variable with the + * allocated count from the port. + */ + if (emb == LPFC_SLI4_MBX_EMBED) { + rsrc_ext = &mbox->u.mqe.un.alloc_rsrc_extents; + id_array = &rsrc_ext->u.rsp.id[0]; + rsrc_cnt = bf_get(lpfc_mbx_rsrc_cnt, &rsrc_ext->u.rsp); + } else { + virtaddr = mbox->sge_array->addr[0]; + n_rsrc = (struct lpfc_mbx_nembed_rsrc_extent *) virtaddr; + rsrc_cnt = bf_get(lpfc_mbx_rsrc_cnt, n_rsrc); + id_array = &n_rsrc->id; + } + + longs = ((rsrc_cnt * rsrc_size) + BITS_PER_LONG - 1) / BITS_PER_LONG; + rsrc_id_cnt = rsrc_cnt * rsrc_size; + + /* + * Based on the resource size and count, correct the base and max + * resource values. + */ + length = sizeof(struct lpfc_rsrc_blks); + switch (type) { + case LPFC_RSC_TYPE_FCOE_RPI: + phba->sli4_hba.rpi_bmask = kzalloc(longs * + sizeof(unsigned long), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.rpi_bmask)) { + rc = -ENOMEM; + goto err_exit; + } + phba->sli4_hba.rpi_ids = kzalloc(rsrc_id_cnt * + sizeof(uint16_t), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.rpi_ids)) { + kfree(phba->sli4_hba.rpi_bmask); + rc = -ENOMEM; + goto err_exit; + } + + /* + * The next_rpi was initialized with the maximum available + * count but the port may allocate a smaller number. Catch + * that case and update the next_rpi. + */ + phba->sli4_hba.next_rpi = rsrc_id_cnt; + + /* Initialize local ptrs for common extent processing later. */ + bmask = phba->sli4_hba.rpi_bmask; + ids = phba->sli4_hba.rpi_ids; + ext_blk_list = &phba->sli4_hba.lpfc_rpi_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_VPI: + phba->vpi_bmask = kzalloc(longs * + sizeof(unsigned long), + GFP_KERNEL); + if (unlikely(!phba->vpi_bmask)) { + rc = -ENOMEM; + goto err_exit; + } + phba->vpi_ids = kzalloc(rsrc_id_cnt * + sizeof(uint16_t), + GFP_KERNEL); + if (unlikely(!phba->vpi_ids)) { + kfree(phba->vpi_bmask); + rc = -ENOMEM; + goto err_exit; + } + + /* Initialize local ptrs for common extent processing later. */ + bmask = phba->vpi_bmask; + ids = phba->vpi_ids; + ext_blk_list = &phba->lpfc_vpi_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_XRI: + phba->sli4_hba.xri_bmask = kzalloc(longs * + sizeof(unsigned long), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.xri_bmask)) { + rc = -ENOMEM; + goto err_exit; + } + phba->sli4_hba.max_cfg_param.xri_used = 0; + phba->sli4_hba.xri_ids = kzalloc(rsrc_id_cnt * + sizeof(uint16_t), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.xri_ids)) { + kfree(phba->sli4_hba.xri_bmask); + rc = -ENOMEM; + goto err_exit; + } + + /* Initialize local ptrs for common extent processing later. */ + bmask = phba->sli4_hba.xri_bmask; + ids = phba->sli4_hba.xri_ids; + ext_blk_list = &phba->sli4_hba.lpfc_xri_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_VFI: + phba->sli4_hba.vfi_bmask = kzalloc(longs * + sizeof(unsigned long), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.vfi_bmask)) { + rc = -ENOMEM; + goto err_exit; + } + phba->sli4_hba.vfi_ids = kzalloc(rsrc_id_cnt * + sizeof(uint16_t), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.vfi_ids)) { + kfree(phba->sli4_hba.vfi_bmask); + rc = -ENOMEM; + goto err_exit; + } + + /* Initialize local ptrs for common extent processing later. */ + bmask = phba->sli4_hba.vfi_bmask; + ids = phba->sli4_hba.vfi_ids; + ext_blk_list = &phba->sli4_hba.lpfc_vfi_blk_list; + break; + default: + /* Unsupported Opcode. Fail call. */ + id_array = NULL; + bmask = NULL; + ids = NULL; + ext_blk_list = NULL; + goto err_exit; + } + + /* + * Complete initializing the extent configuration with the + * allocated ids assigned to this function. The bitmask serves + * as an index into the array and manages the available ids. The + * array just stores the ids communicated to the port via the wqes. + */ + for (i = 0, j = 0, k = 0; i < rsrc_cnt; i++) { + if ((i % 2) == 0) + rsrc_id = bf_get(lpfc_mbx_rsrc_id_word4_0, + &id_array[k]); + else + rsrc_id = bf_get(lpfc_mbx_rsrc_id_word4_1, + &id_array[k]); + + rsrc_blks = kzalloc(length, GFP_KERNEL); + if (unlikely(!rsrc_blks)) { + rc = -ENOMEM; + kfree(bmask); + kfree(ids); + goto err_exit; + } + rsrc_blks->rsrc_start = rsrc_id; + rsrc_blks->rsrc_size = rsrc_size; + list_add_tail(&rsrc_blks->list, ext_blk_list); + rsrc_start = rsrc_id; + if ((type == LPFC_RSC_TYPE_FCOE_XRI) && (j == 0)) + phba->sli4_hba.scsi_xri_start = rsrc_start + + lpfc_sli4_get_els_iocb_cnt(phba); + + while (rsrc_id < (rsrc_start + rsrc_size)) { + ids[j] = rsrc_id; + rsrc_id++; + j++; + } + /* Entire word processed. Get next word.*/ + if ((i % 2) == 1) + k++; + } + err_exit: + lpfc_sli4_mbox_cmd_free(phba, mbox); + return rc; +} + +/** + * lpfc_sli4_dealloc_extent - Deallocate an SLI4 resource extent. + * @phba: Pointer to HBA context object. + * @type: the extent's type. + * + * This function deallocates all extents of a particular resource type. + * SLI4 does not allow for deallocating a particular extent range. It + * is the caller's responsibility to release all kernel memory resources. + **/ +static int +lpfc_sli4_dealloc_extent(struct lpfc_hba *phba, uint16_t type) +{ + int rc; + uint32_t length, mbox_tmo = 0; + LPFC_MBOXQ_t *mbox; + struct lpfc_mbx_dealloc_rsrc_extents *dealloc_rsrc; + struct lpfc_rsrc_blks *rsrc_blk, *rsrc_blk_next; + + mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + + /* + * This function sends an embedded mailbox because it only sends the + * the resource type. All extents of this type are released by the + * port. + */ + length = (sizeof(struct lpfc_mbx_dealloc_rsrc_extents) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_DEALLOC_RSRC_EXTENT, + length, LPFC_SLI4_MBX_EMBED); + + /* Send an extents count of 0 - the dealloc doesn't use it. */ + rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, 0, type, + LPFC_SLI4_MBX_EMBED); + if (unlikely(rc)) { + rc = -EIO; + goto out_free_mbox; + } + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + if (unlikely(rc)) { + rc = -EIO; + goto out_free_mbox; + } + + dealloc_rsrc = &mbox->u.mqe.un.dealloc_rsrc_extents; + if (bf_get(lpfc_mbox_hdr_status, + &dealloc_rsrc->header.cfg_shdr.response)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT, + "2919 Failed to release resource extents " + "for type %d - Status 0x%x Add'l Status 0x%x. " + "Resource memory not released.\n", + type, + bf_get(lpfc_mbox_hdr_status, + &dealloc_rsrc->header.cfg_shdr.response), + bf_get(lpfc_mbox_hdr_add_status, + &dealloc_rsrc->header.cfg_shdr.response)); + rc = -EIO; + goto out_free_mbox; + } + + /* Release kernel memory resources for the specific type. */ + switch (type) { + case LPFC_RSC_TYPE_FCOE_VPI: + kfree(phba->vpi_bmask); + kfree(phba->vpi_ids); + bf_set(lpfc_vpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0); + list_for_each_entry_safe(rsrc_blk, rsrc_blk_next, + &phba->lpfc_vpi_blk_list, list) { + list_del_init(&rsrc_blk->list); + kfree(rsrc_blk); + } + phba->sli4_hba.max_cfg_param.vpi_used = 0; + break; + case LPFC_RSC_TYPE_FCOE_XRI: + kfree(phba->sli4_hba.xri_bmask); + kfree(phba->sli4_hba.xri_ids); + list_for_each_entry_safe(rsrc_blk, rsrc_blk_next, + &phba->sli4_hba.lpfc_xri_blk_list, list) { + list_del_init(&rsrc_blk->list); + kfree(rsrc_blk); + } + break; + case LPFC_RSC_TYPE_FCOE_VFI: + kfree(phba->sli4_hba.vfi_bmask); + kfree(phba->sli4_hba.vfi_ids); + bf_set(lpfc_vfi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0); + list_for_each_entry_safe(rsrc_blk, rsrc_blk_next, + &phba->sli4_hba.lpfc_vfi_blk_list, list) { + list_del_init(&rsrc_blk->list); + kfree(rsrc_blk); + } + break; + case LPFC_RSC_TYPE_FCOE_RPI: + /* RPI bitmask and physical id array are cleaned up earlier. */ + list_for_each_entry_safe(rsrc_blk, rsrc_blk_next, + &phba->sli4_hba.lpfc_rpi_blk_list, list) { + list_del_init(&rsrc_blk->list); + kfree(rsrc_blk); + } + break; + default: + break; + } + + bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0); + + out_free_mbox: + mempool_free(mbox, phba->mbox_mem_pool); + return rc; +} + +/** + * lpfc_sli4_alloc_resource_identifiers - Allocate all SLI4 resource extents. + * @phba: Pointer to HBA context object. + * + * This function allocates all SLI4 resource identifiers. + **/ +int +lpfc_sli4_alloc_resource_identifiers(struct lpfc_hba *phba) +{ + int i, rc, error = 0; + uint16_t count, base; + unsigned long longs; + + if (!phba->sli4_hba.rpi_hdrs_in_use) + phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.max_rpi; + if (phba->sli4_hba.extents_in_use) { + /* + * The port supports resource extents. The XRI, VPI, VFI, RPI + * resource extent count must be read and allocated before + * provisioning the resource id arrays. + */ + if (bf_get(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags) == + LPFC_IDX_RSRC_RDY) { + /* + * Extent-based resources are set - the driver could + * be in a port reset. Figure out if any corrective + * actions need to be taken. + */ + rc = lpfc_sli4_chk_avail_extnt_rsrc(phba, + LPFC_RSC_TYPE_FCOE_VFI); + if (rc != 0) + error++; + rc = lpfc_sli4_chk_avail_extnt_rsrc(phba, + LPFC_RSC_TYPE_FCOE_VPI); + if (rc != 0) + error++; + rc = lpfc_sli4_chk_avail_extnt_rsrc(phba, + LPFC_RSC_TYPE_FCOE_XRI); + if (rc != 0) + error++; + rc = lpfc_sli4_chk_avail_extnt_rsrc(phba, + LPFC_RSC_TYPE_FCOE_RPI); + if (rc != 0) + error++; + + /* + * It's possible that the number of resources + * provided to this port instance changed between + * resets. Detect this condition and reallocate + * resources. Otherwise, there is no action. + */ + if (error) { + lpfc_printf_log(phba, KERN_INFO, + LOG_MBOX | LOG_INIT, + "2931 Detected extent resource " + "change. Reallocating all " + "extents.\n"); + rc = lpfc_sli4_dealloc_extent(phba, + LPFC_RSC_TYPE_FCOE_VFI); + rc = lpfc_sli4_dealloc_extent(phba, + LPFC_RSC_TYPE_FCOE_VPI); + rc = lpfc_sli4_dealloc_extent(phba, + LPFC_RSC_TYPE_FCOE_XRI); + rc = lpfc_sli4_dealloc_extent(phba, + LPFC_RSC_TYPE_FCOE_RPI); + } else + return 0; + } + + rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_VFI); + if (unlikely(rc)) + goto err_exit; + + rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_VPI); + if (unlikely(rc)) + goto err_exit; + + rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_RPI); + if (unlikely(rc)) + goto err_exit; + + rc = lpfc_sli4_alloc_extent(phba, LPFC_RSC_TYPE_FCOE_XRI); + if (unlikely(rc)) + goto err_exit; + bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, + LPFC_IDX_RSRC_RDY); + return rc; + } else { + /* + * The port does not support resource extents. The XRI, VPI, + * VFI, RPI resource ids were determined from READ_CONFIG. + * Just allocate the bitmasks and provision the resource id + * arrays. If a port reset is active, the resources don't + * need any action - just exit. + */ + if (bf_get(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags) == + LPFC_IDX_RSRC_RDY) { + lpfc_sli4_dealloc_resource_identifiers(phba); + lpfc_sli4_remove_rpis(phba); + } + /* RPIs. */ + count = phba->sli4_hba.max_cfg_param.max_rpi; + if (count <= 0) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3279 Invalid provisioning of " + "rpi:%d\n", count); + rc = -EINVAL; + goto err_exit; + } + base = phba->sli4_hba.max_cfg_param.rpi_base; + longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG; + phba->sli4_hba.rpi_bmask = kzalloc(longs * + sizeof(unsigned long), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.rpi_bmask)) { + rc = -ENOMEM; + goto err_exit; + } + phba->sli4_hba.rpi_ids = kzalloc(count * + sizeof(uint16_t), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.rpi_ids)) { + rc = -ENOMEM; + goto free_rpi_bmask; + } + + for (i = 0; i < count; i++) + phba->sli4_hba.rpi_ids[i] = base + i; + + /* VPIs. */ + count = phba->sli4_hba.max_cfg_param.max_vpi; + if (count <= 0) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3280 Invalid provisioning of " + "vpi:%d\n", count); + rc = -EINVAL; + goto free_rpi_ids; + } + base = phba->sli4_hba.max_cfg_param.vpi_base; + longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG; + phba->vpi_bmask = kzalloc(longs * + sizeof(unsigned long), + GFP_KERNEL); + if (unlikely(!phba->vpi_bmask)) { + rc = -ENOMEM; + goto free_rpi_ids; + } + phba->vpi_ids = kzalloc(count * + sizeof(uint16_t), + GFP_KERNEL); + if (unlikely(!phba->vpi_ids)) { + rc = -ENOMEM; + goto free_vpi_bmask; + } + + for (i = 0; i < count; i++) + phba->vpi_ids[i] = base + i; + + /* XRIs. */ + count = phba->sli4_hba.max_cfg_param.max_xri; + if (count <= 0) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3281 Invalid provisioning of " + "xri:%d\n", count); + rc = -EINVAL; + goto free_vpi_ids; + } + base = phba->sli4_hba.max_cfg_param.xri_base; + longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG; + phba->sli4_hba.xri_bmask = kzalloc(longs * + sizeof(unsigned long), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.xri_bmask)) { + rc = -ENOMEM; + goto free_vpi_ids; + } + phba->sli4_hba.max_cfg_param.xri_used = 0; + phba->sli4_hba.xri_ids = kzalloc(count * + sizeof(uint16_t), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.xri_ids)) { + rc = -ENOMEM; + goto free_xri_bmask; + } + + for (i = 0; i < count; i++) + phba->sli4_hba.xri_ids[i] = base + i; + + /* VFIs. */ + count = phba->sli4_hba.max_cfg_param.max_vfi; + if (count <= 0) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3282 Invalid provisioning of " + "vfi:%d\n", count); + rc = -EINVAL; + goto free_xri_ids; + } + base = phba->sli4_hba.max_cfg_param.vfi_base; + longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG; + phba->sli4_hba.vfi_bmask = kzalloc(longs * + sizeof(unsigned long), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.vfi_bmask)) { + rc = -ENOMEM; + goto free_xri_ids; + } + phba->sli4_hba.vfi_ids = kzalloc(count * + sizeof(uint16_t), + GFP_KERNEL); + if (unlikely(!phba->sli4_hba.vfi_ids)) { + rc = -ENOMEM; + goto free_vfi_bmask; + } + + for (i = 0; i < count; i++) + phba->sli4_hba.vfi_ids[i] = base + i; + + /* + * Mark all resources ready. An HBA reset doesn't need + * to reset the initialization. + */ + bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, + LPFC_IDX_RSRC_RDY); + return 0; + } + + free_vfi_bmask: + kfree(phba->sli4_hba.vfi_bmask); + free_xri_ids: + kfree(phba->sli4_hba.xri_ids); + free_xri_bmask: + kfree(phba->sli4_hba.xri_bmask); + free_vpi_ids: + kfree(phba->vpi_ids); + free_vpi_bmask: + kfree(phba->vpi_bmask); + free_rpi_ids: + kfree(phba->sli4_hba.rpi_ids); + free_rpi_bmask: + kfree(phba->sli4_hba.rpi_bmask); + err_exit: + return rc; +} + +/** + * lpfc_sli4_dealloc_resource_identifiers - Deallocate all SLI4 resource extents. + * @phba: Pointer to HBA context object. + * + * This function allocates the number of elements for the specified + * resource type. + **/ +int +lpfc_sli4_dealloc_resource_identifiers(struct lpfc_hba *phba) +{ + if (phba->sli4_hba.extents_in_use) { + lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_VPI); + lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_RPI); + lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_XRI); + lpfc_sli4_dealloc_extent(phba, LPFC_RSC_TYPE_FCOE_VFI); + } else { + kfree(phba->vpi_bmask); + phba->sli4_hba.max_cfg_param.vpi_used = 0; + kfree(phba->vpi_ids); + bf_set(lpfc_vpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0); + kfree(phba->sli4_hba.xri_bmask); + kfree(phba->sli4_hba.xri_ids); + kfree(phba->sli4_hba.vfi_bmask); + kfree(phba->sli4_hba.vfi_ids); + bf_set(lpfc_vfi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0); + bf_set(lpfc_idx_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0); + } + + return 0; +} + +/** + * lpfc_sli4_get_allocated_extnts - Get the port's allocated extents. + * @phba: Pointer to HBA context object. + * @type: The resource extent type. + * @extnt_count: buffer to hold port extent count response + * @extnt_size: buffer to hold port extent size response. + * + * This function calls the port to read the host allocated extents + * for a particular type. + **/ +int +lpfc_sli4_get_allocated_extnts(struct lpfc_hba *phba, uint16_t type, + uint16_t *extnt_cnt, uint16_t *extnt_size) +{ + bool emb; + int rc = 0; + uint16_t curr_blks = 0; + uint32_t req_len, emb_len; + uint32_t alloc_len, mbox_tmo; + struct list_head *blk_list_head; + struct lpfc_rsrc_blks *rsrc_blk; + LPFC_MBOXQ_t *mbox; + void *virtaddr = NULL; + struct lpfc_mbx_nembed_rsrc_extent *n_rsrc; + struct lpfc_mbx_alloc_rsrc_extents *rsrc_ext; + union lpfc_sli4_cfg_shdr *shdr; + + switch (type) { + case LPFC_RSC_TYPE_FCOE_VPI: + blk_list_head = &phba->lpfc_vpi_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_XRI: + blk_list_head = &phba->sli4_hba.lpfc_xri_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_VFI: + blk_list_head = &phba->sli4_hba.lpfc_vfi_blk_list; + break; + case LPFC_RSC_TYPE_FCOE_RPI: + blk_list_head = &phba->sli4_hba.lpfc_rpi_blk_list; + break; + default: + return -EIO; + } + + /* Count the number of extents currently allocatd for this type. */ + list_for_each_entry(rsrc_blk, blk_list_head, list) { + if (curr_blks == 0) { + /* + * The GET_ALLOCATED mailbox does not return the size, + * just the count. The size should be just the size + * stored in the current allocated block and all sizes + * for an extent type are the same so set the return + * value now. + */ + *extnt_size = rsrc_blk->rsrc_size; + } + curr_blks++; + } + + /* + * Calculate the size of an embedded mailbox. The uint32_t + * accounts for extents-specific word. + */ + emb_len = sizeof(MAILBOX_t) - sizeof(struct mbox_header) - + sizeof(uint32_t); + + /* + * Presume the allocation and response will fit into an embedded + * mailbox. If not true, reconfigure to a non-embedded mailbox. + */ + emb = LPFC_SLI4_MBX_EMBED; + req_len = emb_len; + if (req_len > emb_len) { + req_len = curr_blks * sizeof(uint16_t) + + sizeof(union lpfc_sli4_cfg_shdr) + + sizeof(uint32_t); + emb = LPFC_SLI4_MBX_NEMBED; + } + + mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + memset(mbox, 0, sizeof(LPFC_MBOXQ_t)); + + alloc_len = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_GET_ALLOC_RSRC_EXTENT, + req_len, emb); + if (alloc_len < req_len) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2983 Allocated DMA memory size (x%x) is " + "less than the requested DMA memory " + "size (x%x)\n", alloc_len, req_len); + rc = -ENOMEM; + goto err_exit; + } + rc = lpfc_sli4_mbox_rsrc_extent(phba, mbox, curr_blks, type, emb); + if (unlikely(rc)) { + rc = -EIO; + goto err_exit; + } + + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + + if (unlikely(rc)) { + rc = -EIO; + goto err_exit; + } + + /* + * Figure out where the response is located. Then get local pointers + * to the response data. The port does not guarantee to respond to + * all extents counts request so update the local variable with the + * allocated count from the port. + */ + if (emb == LPFC_SLI4_MBX_EMBED) { + rsrc_ext = &mbox->u.mqe.un.alloc_rsrc_extents; + shdr = &rsrc_ext->header.cfg_shdr; + *extnt_cnt = bf_get(lpfc_mbx_rsrc_cnt, &rsrc_ext->u.rsp); + } else { + virtaddr = mbox->sge_array->addr[0]; + n_rsrc = (struct lpfc_mbx_nembed_rsrc_extent *) virtaddr; + shdr = &n_rsrc->cfg_shdr; + *extnt_cnt = bf_get(lpfc_mbx_rsrc_cnt, n_rsrc); + } + + if (bf_get(lpfc_mbox_hdr_status, &shdr->response)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT, + "2984 Failed to read allocated resources " + "for type %d - Status 0x%x Add'l Status 0x%x.\n", + type, + bf_get(lpfc_mbox_hdr_status, &shdr->response), + bf_get(lpfc_mbox_hdr_add_status, &shdr->response)); + rc = -EIO; + goto err_exit; + } + err_exit: + lpfc_sli4_mbox_cmd_free(phba, mbox); + return rc; +} + +/** + * lpfc_sli4_repost_els_sgl_list - Repsot the els buffers sgl pages as block + * @phba: pointer to lpfc hba data structure. + * + * This routine walks the list of els buffers that have been allocated and + * repost them to the port by using SGL block post. This is needed after a + * pci_function_reset/warm_start or start. It attempts to construct blocks + * of els buffer sgls which contains contiguous xris and uses the non-embedded + * SGL block post mailbox commands to post them to the port. For single els + * buffer sgl with non-contiguous xri, if any, it shall use embedded SGL post + * mailbox command for posting. + * + * Returns: 0 = success, non-zero failure. + **/ +static int +lpfc_sli4_repost_els_sgl_list(struct lpfc_hba *phba) +{ + struct lpfc_sglq *sglq_entry = NULL; + struct lpfc_sglq *sglq_entry_next = NULL; + struct lpfc_sglq *sglq_entry_first = NULL; + int status, total_cnt, post_cnt = 0, num_posted = 0, block_cnt = 0; + int last_xritag = NO_XRI; + struct lpfc_sli_ring *pring; + LIST_HEAD(prep_sgl_list); + LIST_HEAD(blck_sgl_list); + LIST_HEAD(allc_sgl_list); + LIST_HEAD(post_sgl_list); + LIST_HEAD(free_sgl_list); + + pring = &phba->sli.ring[LPFC_ELS_RING]; + spin_lock_irq(&phba->hbalock); + spin_lock(&pring->ring_lock); + list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &allc_sgl_list); + spin_unlock(&pring->ring_lock); + spin_unlock_irq(&phba->hbalock); + + total_cnt = phba->sli4_hba.els_xri_cnt; + list_for_each_entry_safe(sglq_entry, sglq_entry_next, + &allc_sgl_list, list) { + list_del_init(&sglq_entry->list); + block_cnt++; + if ((last_xritag != NO_XRI) && + (sglq_entry->sli4_xritag != last_xritag + 1)) { + /* a hole in xri block, form a sgl posting block */ + list_splice_init(&prep_sgl_list, &blck_sgl_list); + post_cnt = block_cnt - 1; + /* prepare list for next posting block */ + list_add_tail(&sglq_entry->list, &prep_sgl_list); + block_cnt = 1; + } else { + /* prepare list for next posting block */ + list_add_tail(&sglq_entry->list, &prep_sgl_list); + /* enough sgls for non-embed sgl mbox command */ + if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) { + list_splice_init(&prep_sgl_list, + &blck_sgl_list); + post_cnt = block_cnt; + block_cnt = 0; + } + } + num_posted++; + + /* keep track of last sgl's xritag */ + last_xritag = sglq_entry->sli4_xritag; + + /* end of repost sgl list condition for els buffers */ + if (num_posted == phba->sli4_hba.els_xri_cnt) { + if (post_cnt == 0) { + list_splice_init(&prep_sgl_list, + &blck_sgl_list); + post_cnt = block_cnt; + } else if (block_cnt == 1) { + status = lpfc_sli4_post_sgl(phba, + sglq_entry->phys, 0, + sglq_entry->sli4_xritag); + if (!status) { + /* successful, put sgl to posted list */ + list_add_tail(&sglq_entry->list, + &post_sgl_list); + } else { + /* Failure, put sgl to free list */ + lpfc_printf_log(phba, KERN_WARNING, + LOG_SLI, + "3159 Failed to post els " + "sgl, xritag:x%x\n", + sglq_entry->sli4_xritag); + list_add_tail(&sglq_entry->list, + &free_sgl_list); + total_cnt--; + } + } + } + + /* continue until a nembed page worth of sgls */ + if (post_cnt == 0) + continue; + + /* post the els buffer list sgls as a block */ + status = lpfc_sli4_post_els_sgl_list(phba, &blck_sgl_list, + post_cnt); + + if (!status) { + /* success, put sgl list to posted sgl list */ + list_splice_init(&blck_sgl_list, &post_sgl_list); + } else { + /* Failure, put sgl list to free sgl list */ + sglq_entry_first = list_first_entry(&blck_sgl_list, + struct lpfc_sglq, + list); + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "3160 Failed to post els sgl-list, " + "xritag:x%x-x%x\n", + sglq_entry_first->sli4_xritag, + (sglq_entry_first->sli4_xritag + + post_cnt - 1)); + list_splice_init(&blck_sgl_list, &free_sgl_list); + total_cnt -= post_cnt; + } + + /* don't reset xirtag due to hole in xri block */ + if (block_cnt == 0) + last_xritag = NO_XRI; + + /* reset els sgl post count for next round of posting */ + post_cnt = 0; + } + /* update the number of XRIs posted for ELS */ + phba->sli4_hba.els_xri_cnt = total_cnt; + + /* free the els sgls failed to post */ + lpfc_free_sgl_list(phba, &free_sgl_list); + + /* push els sgls posted to the availble list */ + if (!list_empty(&post_sgl_list)) { + spin_lock_irq(&phba->hbalock); + spin_lock(&pring->ring_lock); + list_splice_init(&post_sgl_list, + &phba->sli4_hba.lpfc_sgl_list); + spin_unlock(&pring->ring_lock); + spin_unlock_irq(&phba->hbalock); + } else { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3161 Failure to post els sgl to port.\n"); + return -EIO; + } + return 0; +} + +/** + * lpfc_sli4_hba_setup - SLI4 device intialization PCI function + * @phba: Pointer to HBA context object. + * + * This function is the main SLI4 device intialization PCI function. This + * function is called by the HBA intialization code, HBA reset code and + * HBA error attention handler code. Caller is not required to hold any + * locks. + **/ +int +lpfc_sli4_hba_setup(struct lpfc_hba *phba) +{ + int rc; + LPFC_MBOXQ_t *mboxq; + struct lpfc_mqe *mqe; + uint8_t *vpd; + uint32_t vpd_size; + uint32_t ftr_rsp = 0; + struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport); + struct lpfc_vport *vport = phba->pport; + struct lpfc_dmabuf *mp; + + /* Perform a PCI function reset to start from clean */ + rc = lpfc_pci_function_reset(phba); + if (unlikely(rc)) + return -ENODEV; + + /* Check the HBA Host Status Register for readyness */ + rc = lpfc_sli4_post_status_check(phba); + if (unlikely(rc)) + return -ENODEV; + else { + spin_lock_irq(&phba->hbalock); + phba->sli.sli_flag |= LPFC_SLI_ACTIVE; + spin_unlock_irq(&phba->hbalock); + } + + /* + * Allocate a single mailbox container for initializing the + * port. + */ + mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) + return -ENOMEM; + + /* Issue READ_REV to collect vpd and FW information. */ + vpd_size = SLI4_PAGE_SIZE; + vpd = kzalloc(vpd_size, GFP_KERNEL); + if (!vpd) { + rc = -ENOMEM; + goto out_free_mbox; + } + + rc = lpfc_sli4_read_rev(phba, mboxq, vpd, &vpd_size); + if (unlikely(rc)) { + kfree(vpd); + goto out_free_mbox; + } + + mqe = &mboxq->u.mqe; + phba->sli_rev = bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev); + if (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev)) + phba->hba_flag |= HBA_FCOE_MODE; + else + phba->hba_flag &= ~HBA_FCOE_MODE; + + if (bf_get(lpfc_mbx_rd_rev_cee_ver, &mqe->un.read_rev) == + LPFC_DCBX_CEE_MODE) + phba->hba_flag |= HBA_FIP_SUPPORT; + else + phba->hba_flag &= ~HBA_FIP_SUPPORT; + + phba->hba_flag &= ~HBA_FCP_IOQ_FLUSH; + + if (phba->sli_rev != LPFC_SLI_REV4) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0376 READ_REV Error. SLI Level %d " + "FCoE enabled %d\n", + phba->sli_rev, phba->hba_flag & HBA_FCOE_MODE); + rc = -EIO; + kfree(vpd); + goto out_free_mbox; + } + + /* + * Continue initialization with default values even if driver failed + * to read FCoE param config regions, only read parameters if the + * board is FCoE + */ + if (phba->hba_flag & HBA_FCOE_MODE && + lpfc_sli4_read_fcoe_params(phba)) + lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_INIT, + "2570 Failed to read FCoE parameters\n"); + + /* + * Retrieve sli4 device physical port name, failure of doing it + * is considered as non-fatal. + */ + rc = lpfc_sli4_retrieve_pport_name(phba); + if (!rc) + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "3080 Successful retrieving SLI4 device " + "physical port name: %s.\n", phba->Port); + + /* + * Evaluate the read rev and vpd data. Populate the driver + * state with the results. If this routine fails, the failure + * is not fatal as the driver will use generic values. + */ + rc = lpfc_parse_vpd(phba, vpd, vpd_size); + if (unlikely(!rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0377 Error %d parsing vpd. " + "Using defaults.\n", rc); + rc = 0; + } + kfree(vpd); + + /* Save information as VPD data */ + phba->vpd.rev.biuRev = mqe->un.read_rev.first_hw_rev; + phba->vpd.rev.smRev = mqe->un.read_rev.second_hw_rev; + phba->vpd.rev.endecRev = mqe->un.read_rev.third_hw_rev; + phba->vpd.rev.fcphHigh = bf_get(lpfc_mbx_rd_rev_fcph_high, + &mqe->un.read_rev); + phba->vpd.rev.fcphLow = bf_get(lpfc_mbx_rd_rev_fcph_low, + &mqe->un.read_rev); + phba->vpd.rev.feaLevelHigh = bf_get(lpfc_mbx_rd_rev_ftr_lvl_high, + &mqe->un.read_rev); + phba->vpd.rev.feaLevelLow = bf_get(lpfc_mbx_rd_rev_ftr_lvl_low, + &mqe->un.read_rev); + phba->vpd.rev.sli1FwRev = mqe->un.read_rev.fw_id_rev; + memcpy(phba->vpd.rev.sli1FwName, mqe->un.read_rev.fw_name, 16); + phba->vpd.rev.sli2FwRev = mqe->un.read_rev.ulp_fw_id_rev; + memcpy(phba->vpd.rev.sli2FwName, mqe->un.read_rev.ulp_fw_name, 16); + phba->vpd.rev.opFwRev = mqe->un.read_rev.fw_id_rev; + memcpy(phba->vpd.rev.opFwName, mqe->un.read_rev.fw_name, 16); + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "(%d):0380 READ_REV Status x%x " + "fw_rev:%s fcphHi:%x fcphLo:%x flHi:%x flLo:%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, + bf_get(lpfc_mqe_status, mqe), + phba->vpd.rev.opFwName, + phba->vpd.rev.fcphHigh, phba->vpd.rev.fcphLow, + phba->vpd.rev.feaLevelHigh, phba->vpd.rev.feaLevelLow); + + /* Reset the DFT_LUN_Q_DEPTH to (max xri >> 3) */ + rc = (phba->sli4_hba.max_cfg_param.max_xri >> 3); + if (phba->pport->cfg_lun_queue_depth > rc) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "3362 LUN queue depth changed from %d to %d\n", + phba->pport->cfg_lun_queue_depth, rc); + phba->pport->cfg_lun_queue_depth = rc; + } + + + /* + * Discover the port's supported feature set and match it against the + * hosts requests. + */ + lpfc_request_features(phba, mboxq); + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + if (unlikely(rc)) { + rc = -EIO; + goto out_free_mbox; + } + + /* + * The port must support FCP initiator mode as this is the + * only mode running in the host. + */ + if (!(bf_get(lpfc_mbx_rq_ftr_rsp_fcpi, &mqe->un.req_ftrs))) { + lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, + "0378 No support for fcpi mode.\n"); + ftr_rsp++; + } + if (bf_get(lpfc_mbx_rq_ftr_rsp_perfh, &mqe->un.req_ftrs)) + phba->sli3_options |= LPFC_SLI4_PERFH_ENABLED; + else + phba->sli3_options &= ~LPFC_SLI4_PERFH_ENABLED; + /* + * If the port cannot support the host's requested features + * then turn off the global config parameters to disable the + * feature in the driver. This is not a fatal error. + */ + phba->sli3_options &= ~LPFC_SLI3_BG_ENABLED; + if (phba->cfg_enable_bg) { + if (bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)) + phba->sli3_options |= LPFC_SLI3_BG_ENABLED; + else + ftr_rsp++; + } + + if (phba->max_vpi && phba->cfg_enable_npiv && + !(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs))) + ftr_rsp++; + + if (ftr_rsp) { + lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, + "0379 Feature Mismatch Data: x%08x %08x " + "x%x x%x x%x\n", mqe->un.req_ftrs.word2, + mqe->un.req_ftrs.word3, phba->cfg_enable_bg, + phba->cfg_enable_npiv, phba->max_vpi); + if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs))) + phba->cfg_enable_bg = 0; + if (!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs))) + phba->cfg_enable_npiv = 0; + } + + /* These SLI3 features are assumed in SLI4 */ + spin_lock_irq(&phba->hbalock); + phba->sli3_options |= (LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED); + spin_unlock_irq(&phba->hbalock); + + /* + * Allocate all resources (xri,rpi,vpi,vfi) now. Subsequent + * calls depends on these resources to complete port setup. + */ + rc = lpfc_sli4_alloc_resource_identifiers(phba); + if (rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "2920 Failed to alloc Resource IDs " + "rc = x%x\n", rc); + goto out_free_mbox; + } + + /* Read the port's service parameters. */ + rc = lpfc_read_sparam(phba, mboxq, vport->vpi); + if (rc) { + phba->link_state = LPFC_HBA_ERROR; + rc = -ENOMEM; + goto out_free_mbox; + } + + mboxq->vport = vport; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + mp = (struct lpfc_dmabuf *) mboxq->context1; + if (rc == MBX_SUCCESS) { + memcpy(&vport->fc_sparam, mp->virt, sizeof(struct serv_parm)); + rc = 0; + } + + /* + * This memory was allocated by the lpfc_read_sparam routine. Release + * it to the mbuf pool. + */ + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + mboxq->context1 = NULL; + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0382 READ_SPARAM command failed " + "status %d, mbxStatus x%x\n", + rc, bf_get(lpfc_mqe_status, mqe)); + phba->link_state = LPFC_HBA_ERROR; + rc = -EIO; + goto out_free_mbox; + } + + lpfc_update_vport_wwn(vport); + + /* Update the fc_host data structures with new wwn. */ + fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn); + fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); + + /* update host els and scsi xri-sgl sizes and mappings */ + rc = lpfc_sli4_xri_sgl_update(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "1400 Failed to update xri-sgl size and " + "mapping: %d\n", rc); + goto out_free_mbox; + } + + /* register the els sgl pool to the port */ + rc = lpfc_sli4_repost_els_sgl_list(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0582 Error %d during els sgl post " + "operation\n", rc); + rc = -ENODEV; + goto out_free_mbox; + } + + /* register the allocated scsi sgl pool to the port */ + rc = lpfc_sli4_repost_scsi_sgl_list(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0383 Error %d during scsi sgl post " + "operation\n", rc); + /* Some Scsi buffers were moved to the abort scsi list */ + /* A pci function reset will repost them */ + rc = -ENODEV; + goto out_free_mbox; + } + + /* Post the rpi header region to the device. */ + rc = lpfc_sli4_post_all_rpi_hdrs(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0393 Error %d during rpi post operation\n", + rc); + rc = -ENODEV; + goto out_free_mbox; + } + lpfc_sli4_node_prep(phba); + + /* Create all the SLI4 queues */ + rc = lpfc_sli4_queue_create(phba); + if (rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3089 Failed to allocate queues\n"); + rc = -ENODEV; + goto out_stop_timers; + } + /* Set up all the queues to the device */ + rc = lpfc_sli4_queue_setup(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0381 Error %d during queue setup.\n ", rc); + goto out_destroy_queue; + } + + /* Arm the CQs and then EQs on device */ + lpfc_sli4_arm_cqeq_intr(phba); + + /* Indicate device interrupt mode */ + phba->sli4_hba.intr_enable = 1; + + /* Allow asynchronous mailbox command to go through */ + spin_lock_irq(&phba->hbalock); + phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; + spin_unlock_irq(&phba->hbalock); + + /* Post receive buffers to the device */ + lpfc_sli4_rb_setup(phba); + + /* Reset HBA FCF states after HBA reset */ + phba->fcf.fcf_flag = 0; + phba->fcf.current_rec.flag = 0; + + /* Start the ELS watchdog timer */ + mod_timer(&vport->els_tmofunc, + jiffies + msecs_to_jiffies(1000 * (phba->fc_ratov * 2))); + + /* Start heart beat timer */ + mod_timer(&phba->hb_tmofunc, + jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL)); + phba->hb_outstanding = 0; + phba->last_completion_time = jiffies; + + /* Start error attention (ERATT) polling timer */ + mod_timer(&phba->eratt_poll, + jiffies + msecs_to_jiffies(1000 * LPFC_ERATT_POLL_INTERVAL)); + + /* Enable PCIe device Advanced Error Reporting (AER) if configured */ + if (phba->cfg_aer_support == 1 && !(phba->hba_flag & HBA_AER_ENABLED)) { + rc = pci_enable_pcie_error_reporting(phba->pcidev); + if (!rc) { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2829 This device supports " + "Advanced Error Reporting (AER)\n"); + spin_lock_irq(&phba->hbalock); + phba->hba_flag |= HBA_AER_ENABLED; + spin_unlock_irq(&phba->hbalock); + } else { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2830 This device does not support " + "Advanced Error Reporting (AER)\n"); + phba->cfg_aer_support = 0; + } + rc = 0; + } + + if (!(phba->hba_flag & HBA_FCOE_MODE)) { + /* + * The FC Port needs to register FCFI (index 0) + */ + lpfc_reg_fcfi(phba, mboxq); + mboxq->vport = phba->pport; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + if (rc != MBX_SUCCESS) + goto out_unset_queue; + rc = 0; + phba->fcf.fcfi = bf_get(lpfc_reg_fcfi_fcfi, + &mboxq->u.mqe.un.reg_fcfi); + + /* Check if the port is configured to be disabled */ + lpfc_sli_read_link_ste(phba); + } + + /* + * The port is ready, set the host's link state to LINK_DOWN + * in preparation for link interrupts. + */ + spin_lock_irq(&phba->hbalock); + phba->link_state = LPFC_LINK_DOWN; + spin_unlock_irq(&phba->hbalock); + if (!(phba->hba_flag & HBA_FCOE_MODE) && + (phba->hba_flag & LINK_DISABLED)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_SLI, + "3103 Adapter Link is disabled.\n"); + lpfc_down_link(phba, mboxq); + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_SLI, + "3104 Adapter failed to issue " + "DOWN_LINK mbox cmd, rc:x%x\n", rc); + goto out_unset_queue; + } + } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) { + /* don't perform init_link on SLI4 FC port loopback test */ + if (!(phba->link_flag & LS_LOOPBACK_MODE)) { + rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT); + if (rc) + goto out_unset_queue; + } + } + mempool_free(mboxq, phba->mbox_mem_pool); + return rc; +out_unset_queue: + /* Unset all the queues set up in this routine when error out */ + lpfc_sli4_queue_unset(phba); +out_destroy_queue: + lpfc_sli4_queue_destroy(phba); +out_stop_timers: + lpfc_stop_hba_timers(phba); +out_free_mbox: + mempool_free(mboxq, phba->mbox_mem_pool); + return rc; +} + +/** + * lpfc_mbox_timeout - Timeout call back function for mbox timer + * @ptr: context object - pointer to hba structure. + * + * This is the callback function for mailbox timer. The mailbox + * timer is armed when a new mailbox command is issued and the timer + * is deleted when the mailbox complete. The function is called by + * the kernel timer code when a mailbox does not complete within + * expected time. This function wakes up the worker thread to + * process the mailbox timeout and returns. All the processing is + * done by the worker thread function lpfc_mbox_timeout_handler. + **/ +void +lpfc_mbox_timeout(unsigned long ptr) +{ + struct lpfc_hba *phba = (struct lpfc_hba *) ptr; + unsigned long iflag; + uint32_t tmo_posted; + + spin_lock_irqsave(&phba->pport->work_port_lock, iflag); + tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO; + if (!tmo_posted) + phba->pport->work_port_events |= WORKER_MBOX_TMO; + spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag); + + if (!tmo_posted) + lpfc_worker_wake_up(phba); + return; +} + +/** + * lpfc_sli4_mbox_completions_pending - check to see if any mailbox completions + * are pending + * @phba: Pointer to HBA context object. + * + * This function checks if any mailbox completions are present on the mailbox + * completion queue. + **/ +bool +lpfc_sli4_mbox_completions_pending(struct lpfc_hba *phba) +{ + + uint32_t idx; + struct lpfc_queue *mcq; + struct lpfc_mcqe *mcqe; + bool pending_completions = false; + + if (unlikely(!phba) || (phba->sli_rev != LPFC_SLI_REV4)) + return false; + + /* Check for completions on mailbox completion queue */ + + mcq = phba->sli4_hba.mbx_cq; + idx = mcq->hba_index; + while (bf_get_le32(lpfc_cqe_valid, mcq->qe[idx].cqe)) { + mcqe = (struct lpfc_mcqe *)mcq->qe[idx].cqe; + if (bf_get_le32(lpfc_trailer_completed, mcqe) && + (!bf_get_le32(lpfc_trailer_async, mcqe))) { + pending_completions = true; + break; + } + idx = (idx + 1) % mcq->entry_count; + if (mcq->hba_index == idx) + break; + } + return pending_completions; + +} + +/** + * lpfc_sli4_process_missed_mbox_completions - process mbox completions + * that were missed. + * @phba: Pointer to HBA context object. + * + * For sli4, it is possible to miss an interrupt. As such mbox completions + * maybe missed causing erroneous mailbox timeouts to occur. This function + * checks to see if mbox completions are on the mailbox completion queue + * and will process all the completions associated with the eq for the + * mailbox completion queue. + **/ +bool +lpfc_sli4_process_missed_mbox_completions(struct lpfc_hba *phba) +{ + + uint32_t eqidx; + struct lpfc_queue *fpeq = NULL; + struct lpfc_eqe *eqe; + bool mbox_pending; + + if (unlikely(!phba) || (phba->sli_rev != LPFC_SLI_REV4)) + return false; + + /* Find the eq associated with the mcq */ + + if (phba->sli4_hba.hba_eq) + for (eqidx = 0; eqidx < phba->cfg_fcp_io_channel; eqidx++) + if (phba->sli4_hba.hba_eq[eqidx]->queue_id == + phba->sli4_hba.mbx_cq->assoc_qid) { + fpeq = phba->sli4_hba.hba_eq[eqidx]; + break; + } + if (!fpeq) + return false; + + /* Turn off interrupts from this EQ */ + + lpfc_sli4_eq_clr_intr(fpeq); + + /* Check to see if a mbox completion is pending */ + + mbox_pending = lpfc_sli4_mbox_completions_pending(phba); + + /* + * If a mbox completion is pending, process all the events on EQ + * associated with the mbox completion queue (this could include + * mailbox commands, async events, els commands, receive queue data + * and fcp commands) + */ + + if (mbox_pending) + while ((eqe = lpfc_sli4_eq_get(fpeq))) { + lpfc_sli4_hba_handle_eqe(phba, eqe, eqidx); + fpeq->EQ_processed++; + } + + /* Always clear and re-arm the EQ */ + + lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM); + + return mbox_pending; + +} + +/** + * lpfc_mbox_timeout_handler - Worker thread function to handle mailbox timeout + * @phba: Pointer to HBA context object. + * + * This function is called from worker thread when a mailbox command times out. + * The caller is not required to hold any locks. This function will reset the + * HBA and recover all the pending commands. + **/ +void +lpfc_mbox_timeout_handler(struct lpfc_hba *phba) +{ + LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active; + MAILBOX_t *mb = NULL; + + struct lpfc_sli *psli = &phba->sli; + + /* If the mailbox completed, process the completion and return */ + if (lpfc_sli4_process_missed_mbox_completions(phba)) + return; + + if (pmbox != NULL) + mb = &pmbox->u.mb; + /* Check the pmbox pointer first. There is a race condition + * between the mbox timeout handler getting executed in the + * worklist and the mailbox actually completing. When this + * race condition occurs, the mbox_active will be NULL. + */ + spin_lock_irq(&phba->hbalock); + if (pmbox == NULL) { + lpfc_printf_log(phba, KERN_WARNING, + LOG_MBOX | LOG_SLI, + "0353 Active Mailbox cleared - mailbox timeout " + "exiting\n"); + spin_unlock_irq(&phba->hbalock); + return; + } + + /* Mbox cmd <mbxCommand> timeout */ + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0310 Mailbox command x%x timeout Data: x%x x%x x%p\n", + mb->mbxCommand, + phba->pport->port_state, + phba->sli.sli_flag, + phba->sli.mbox_active); + spin_unlock_irq(&phba->hbalock); + + /* Setting state unknown so lpfc_sli_abort_iocb_ring + * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing + * it to fail all outstanding SCSI IO. + */ + spin_lock_irq(&phba->pport->work_port_lock); + phba->pport->work_port_events &= ~WORKER_MBOX_TMO; + spin_unlock_irq(&phba->pport->work_port_lock); + spin_lock_irq(&phba->hbalock); + phba->link_state = LPFC_LINK_UNKNOWN; + psli->sli_flag &= ~LPFC_SLI_ACTIVE; + spin_unlock_irq(&phba->hbalock); + + lpfc_sli_abort_fcp_rings(phba); + + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0345 Resetting board due to mailbox timeout\n"); + + /* Reset the HBA device */ + lpfc_reset_hba(phba); +} + +/** + * lpfc_sli_issue_mbox_s3 - Issue an SLI3 mailbox command to firmware + * @phba: Pointer to HBA context object. + * @pmbox: Pointer to mailbox object. + * @flag: Flag indicating how the mailbox need to be processed. + * + * This function is called by discovery code and HBA management code + * to submit a mailbox command to firmware with SLI-3 interface spec. This + * function gets the hbalock to protect the data structures. + * The mailbox command can be submitted in polling mode, in which case + * this function will wait in a polling loop for the completion of the + * mailbox. + * If the mailbox is submitted in no_wait mode (not polling) the + * function will submit the command and returns immediately without waiting + * for the mailbox completion. The no_wait is supported only when HBA + * is in SLI2/SLI3 mode - interrupts are enabled. + * The SLI interface allows only one mailbox pending at a time. If the + * mailbox is issued in polling mode and there is already a mailbox + * pending, then the function will return an error. If the mailbox is issued + * in NO_WAIT mode and there is a mailbox pending already, the function + * will return MBX_BUSY after queuing the mailbox into mailbox queue. + * The sli layer owns the mailbox object until the completion of mailbox + * command if this function return MBX_BUSY or MBX_SUCCESS. For all other + * return codes the caller owns the mailbox command after the return of + * the function. + **/ +static int +lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, + uint32_t flag) +{ + MAILBOX_t *mbx; + struct lpfc_sli *psli = &phba->sli; + uint32_t status, evtctr; + uint32_t ha_copy, hc_copy; + int i; + unsigned long timeout; + unsigned long drvr_flag = 0; + uint32_t word0, ldata; + void __iomem *to_slim; + int processing_queue = 0; + + spin_lock_irqsave(&phba->hbalock, drvr_flag); + if (!pmbox) { + phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + /* processing mbox queue from intr_handler */ + if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + return MBX_SUCCESS; + } + processing_queue = 1; + pmbox = lpfc_mbox_get(phba); + if (!pmbox) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + return MBX_SUCCESS; + } + } + + if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl && + pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) { + if(!pmbox->vport) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + lpfc_printf_log(phba, KERN_ERR, + LOG_MBOX | LOG_VPORT, + "1806 Mbox x%x failed. No vport\n", + pmbox->u.mb.mbxCommand); + dump_stack(); + goto out_not_finished; + } + } + + /* If the PCI channel is in offline state, do not post mbox. */ + if (unlikely(pci_channel_offline(phba->pcidev))) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + goto out_not_finished; + } + + /* If HBA has a deferred error attention, fail the iocb. */ + if (unlikely(phba->hba_flag & DEFER_ERATT)) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + goto out_not_finished; + } + + psli = &phba->sli; + + mbx = &pmbox->u.mb; + status = MBX_SUCCESS; + + if (phba->link_state == LPFC_HBA_ERROR) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + + /* Mbox command <mbxCommand> cannot issue */ + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):0311 Mailbox command x%x cannot " + "issue Data: x%x x%x\n", + pmbox->vport ? pmbox->vport->vpi : 0, + pmbox->u.mb.mbxCommand, psli->sli_flag, flag); + goto out_not_finished; + } + + if (mbx->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT) { + if (lpfc_readl(phba->HCregaddr, &hc_copy) || + !(hc_copy & HC_MBINT_ENA)) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2528 Mailbox command x%x cannot " + "issue Data: x%x x%x\n", + pmbox->vport ? pmbox->vport->vpi : 0, + pmbox->u.mb.mbxCommand, psli->sli_flag, flag); + goto out_not_finished; + } + } + + if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { + /* Polling for a mbox command when another one is already active + * is not allowed in SLI. Also, the driver must have established + * SLI2 mode to queue and process multiple mbox commands. + */ + + if (flag & MBX_POLL) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + + /* Mbox command <mbxCommand> cannot issue */ + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2529 Mailbox command x%x " + "cannot issue Data: x%x x%x\n", + pmbox->vport ? pmbox->vport->vpi : 0, + pmbox->u.mb.mbxCommand, + psli->sli_flag, flag); + goto out_not_finished; + } + + if (!(psli->sli_flag & LPFC_SLI_ACTIVE)) { + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + /* Mbox command <mbxCommand> cannot issue */ + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2530 Mailbox command x%x " + "cannot issue Data: x%x x%x\n", + pmbox->vport ? pmbox->vport->vpi : 0, + pmbox->u.mb.mbxCommand, + psli->sli_flag, flag); + goto out_not_finished; + } + + /* Another mailbox command is still being processed, queue this + * command to be processed later. + */ + lpfc_mbox_put(phba, pmbox); + + /* Mbox cmd issue - BUSY */ + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "(%d):0308 Mbox cmd issue - BUSY Data: " + "x%x x%x x%x x%x\n", + pmbox->vport ? pmbox->vport->vpi : 0xffffff, + mbx->mbxCommand, phba->pport->port_state, + psli->sli_flag, flag); + + psli->slistat.mbox_busy++; + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + + if (pmbox->vport) { + lpfc_debugfs_disc_trc(pmbox->vport, + LPFC_DISC_TRC_MBOX_VPORT, + "MBOX Bsy vport: cmd:x%x mb:x%x x%x", + (uint32_t)mbx->mbxCommand, + mbx->un.varWords[0], mbx->un.varWords[1]); + } + else { + lpfc_debugfs_disc_trc(phba->pport, + LPFC_DISC_TRC_MBOX, + "MBOX Bsy: cmd:x%x mb:x%x x%x", + (uint32_t)mbx->mbxCommand, + mbx->un.varWords[0], mbx->un.varWords[1]); + } + + return MBX_BUSY; + } + + psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; + + /* If we are not polling, we MUST be in SLI2 mode */ + if (flag != MBX_POLL) { + if (!(psli->sli_flag & LPFC_SLI_ACTIVE) && + (mbx->mbxCommand != MBX_KILL_BOARD)) { + psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + /* Mbox command <mbxCommand> cannot issue */ + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2531 Mailbox command x%x " + "cannot issue Data: x%x x%x\n", + pmbox->vport ? pmbox->vport->vpi : 0, + pmbox->u.mb.mbxCommand, + psli->sli_flag, flag); + goto out_not_finished; + } + /* timeout active mbox command */ + timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, pmbox) * + 1000); + mod_timer(&psli->mbox_tmo, jiffies + timeout); + } + + /* Mailbox cmd <cmd> issue */ + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x " + "x%x\n", + pmbox->vport ? pmbox->vport->vpi : 0, + mbx->mbxCommand, phba->pport->port_state, + psli->sli_flag, flag); + + if (mbx->mbxCommand != MBX_HEARTBEAT) { + if (pmbox->vport) { + lpfc_debugfs_disc_trc(pmbox->vport, + LPFC_DISC_TRC_MBOX_VPORT, + "MBOX Send vport: cmd:x%x mb:x%x x%x", + (uint32_t)mbx->mbxCommand, + mbx->un.varWords[0], mbx->un.varWords[1]); + } + else { + lpfc_debugfs_disc_trc(phba->pport, + LPFC_DISC_TRC_MBOX, + "MBOX Send: cmd:x%x mb:x%x x%x", + (uint32_t)mbx->mbxCommand, + mbx->un.varWords[0], mbx->un.varWords[1]); + } + } + + psli->slistat.mbox_cmd++; + evtctr = psli->slistat.mbox_event; + + /* next set own bit for the adapter and copy over command word */ + mbx->mbxOwner = OWN_CHIP; + + if (psli->sli_flag & LPFC_SLI_ACTIVE) { + /* Populate mbox extension offset word. */ + if (pmbox->in_ext_byte_len || pmbox->out_ext_byte_len) { + *(((uint32_t *)mbx) + pmbox->mbox_offset_word) + = (uint8_t *)phba->mbox_ext + - (uint8_t *)phba->mbox; + } + + /* Copy the mailbox extension data */ + if (pmbox->in_ext_byte_len && pmbox->context2) { + lpfc_sli_pcimem_bcopy(pmbox->context2, + (uint8_t *)phba->mbox_ext, + pmbox->in_ext_byte_len); + } + /* Copy command data to host SLIM area */ + lpfc_sli_pcimem_bcopy(mbx, phba->mbox, MAILBOX_CMD_SIZE); + } else { + /* Populate mbox extension offset word. */ + if (pmbox->in_ext_byte_len || pmbox->out_ext_byte_len) + *(((uint32_t *)mbx) + pmbox->mbox_offset_word) + = MAILBOX_HBA_EXT_OFFSET; + + /* Copy the mailbox extension data */ + if (pmbox->in_ext_byte_len && pmbox->context2) { + lpfc_memcpy_to_slim(phba->MBslimaddr + + MAILBOX_HBA_EXT_OFFSET, + pmbox->context2, pmbox->in_ext_byte_len); + + } + if (mbx->mbxCommand == MBX_CONFIG_PORT) { + /* copy command data into host mbox for cmpl */ + lpfc_sli_pcimem_bcopy(mbx, phba->mbox, MAILBOX_CMD_SIZE); + } + + /* First copy mbox command data to HBA SLIM, skip past first + word */ + to_slim = phba->MBslimaddr + sizeof (uint32_t); + lpfc_memcpy_to_slim(to_slim, &mbx->un.varWords[0], + MAILBOX_CMD_SIZE - sizeof (uint32_t)); + + /* Next copy over first word, with mbxOwner set */ + ldata = *((uint32_t *)mbx); + to_slim = phba->MBslimaddr; + writel(ldata, to_slim); + readl(to_slim); /* flush */ + + if (mbx->mbxCommand == MBX_CONFIG_PORT) { + /* switch over to host mailbox */ + psli->sli_flag |= LPFC_SLI_ACTIVE; + } + } + + wmb(); + + switch (flag) { + case MBX_NOWAIT: + /* Set up reference to mailbox command */ + psli->mbox_active = pmbox; + /* Interrupt board to do it */ + writel(CA_MBATT, phba->CAregaddr); + readl(phba->CAregaddr); /* flush */ + /* Don't wait for it to finish, just return */ + break; + + case MBX_POLL: + /* Set up null reference to mailbox command */ + psli->mbox_active = NULL; + /* Interrupt board to do it */ + writel(CA_MBATT, phba->CAregaddr); + readl(phba->CAregaddr); /* flush */ + + if (psli->sli_flag & LPFC_SLI_ACTIVE) { + /* First read mbox status word */ + word0 = *((uint32_t *)phba->mbox); + word0 = le32_to_cpu(word0); + } else { + /* First read mbox status word */ + if (lpfc_readl(phba->MBslimaddr, &word0)) { + spin_unlock_irqrestore(&phba->hbalock, + drvr_flag); + goto out_not_finished; + } + } + + /* Read the HBA Host Attention Register */ + if (lpfc_readl(phba->HAregaddr, &ha_copy)) { + spin_unlock_irqrestore(&phba->hbalock, + drvr_flag); + goto out_not_finished; + } + timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, pmbox) * + 1000) + jiffies; + i = 0; + /* Wait for command to complete */ + while (((word0 & OWN_CHIP) == OWN_CHIP) || + (!(ha_copy & HA_MBATT) && + (phba->link_state > LPFC_WARM_START))) { + if (time_after(jiffies, timeout)) { + psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + spin_unlock_irqrestore(&phba->hbalock, + drvr_flag); + goto out_not_finished; + } + + /* Check if we took a mbox interrupt while we were + polling */ + if (((word0 & OWN_CHIP) != OWN_CHIP) + && (evtctr != psli->slistat.mbox_event)) + break; + + if (i++ > 10) { + spin_unlock_irqrestore(&phba->hbalock, + drvr_flag); + msleep(1); + spin_lock_irqsave(&phba->hbalock, drvr_flag); + } + + if (psli->sli_flag & LPFC_SLI_ACTIVE) { + /* First copy command data */ + word0 = *((uint32_t *)phba->mbox); + word0 = le32_to_cpu(word0); + if (mbx->mbxCommand == MBX_CONFIG_PORT) { + MAILBOX_t *slimmb; + uint32_t slimword0; + /* Check real SLIM for any errors */ + slimword0 = readl(phba->MBslimaddr); + slimmb = (MAILBOX_t *) & slimword0; + if (((slimword0 & OWN_CHIP) != OWN_CHIP) + && slimmb->mbxStatus) { + psli->sli_flag &= + ~LPFC_SLI_ACTIVE; + word0 = slimword0; + } + } + } else { + /* First copy command data */ + word0 = readl(phba->MBslimaddr); + } + /* Read the HBA Host Attention Register */ + if (lpfc_readl(phba->HAregaddr, &ha_copy)) { + spin_unlock_irqrestore(&phba->hbalock, + drvr_flag); + goto out_not_finished; + } + } + + if (psli->sli_flag & LPFC_SLI_ACTIVE) { + /* copy results back to user */ + lpfc_sli_pcimem_bcopy(phba->mbox, mbx, MAILBOX_CMD_SIZE); + /* Copy the mailbox extension data */ + if (pmbox->out_ext_byte_len && pmbox->context2) { + lpfc_sli_pcimem_bcopy(phba->mbox_ext, + pmbox->context2, + pmbox->out_ext_byte_len); + } + } else { + /* First copy command data */ + lpfc_memcpy_from_slim(mbx, phba->MBslimaddr, + MAILBOX_CMD_SIZE); + /* Copy the mailbox extension data */ + if (pmbox->out_ext_byte_len && pmbox->context2) { + lpfc_memcpy_from_slim(pmbox->context2, + phba->MBslimaddr + + MAILBOX_HBA_EXT_OFFSET, + pmbox->out_ext_byte_len); + } + } + + writel(HA_MBATT, phba->HAregaddr); + readl(phba->HAregaddr); /* flush */ + + psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + status = mbx->mbxStatus; + } + + spin_unlock_irqrestore(&phba->hbalock, drvr_flag); + return status; + +out_not_finished: + if (processing_queue) { + pmbox->u.mb.mbxStatus = MBX_NOT_FINISHED; + lpfc_mbox_cmpl_put(phba, pmbox); + } + return MBX_NOT_FINISHED; +} + +/** + * lpfc_sli4_async_mbox_block - Block posting SLI4 asynchronous mailbox command + * @phba: Pointer to HBA context object. + * + * The function blocks the posting of SLI4 asynchronous mailbox commands from + * the driver internal pending mailbox queue. It will then try to wait out the + * possible outstanding mailbox command before return. + * + * Returns: + * 0 - the outstanding mailbox command completed; otherwise, the wait for + * the outstanding mailbox command timed out. + **/ +static int +lpfc_sli4_async_mbox_block(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli = &phba->sli; + int rc = 0; + unsigned long timeout = 0; + + /* Mark the asynchronous mailbox command posting as blocked */ + spin_lock_irq(&phba->hbalock); + psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK; + /* Determine how long we might wait for the active mailbox + * command to be gracefully completed by firmware. + */ + if (phba->sli.mbox_active) + timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, + phba->sli.mbox_active) * + 1000) + jiffies; + spin_unlock_irq(&phba->hbalock); + + /* Make sure the mailbox is really active */ + if (timeout) + lpfc_sli4_process_missed_mbox_completions(phba); + + /* Wait for the outstnading mailbox command to complete */ + while (phba->sli.mbox_active) { + /* Check active mailbox complete status every 2ms */ + msleep(2); + if (time_after(jiffies, timeout)) { + /* Timeout, marked the outstanding cmd not complete */ + rc = 1; + break; + } + } + + /* Can not cleanly block async mailbox command, fails it */ + if (rc) { + spin_lock_irq(&phba->hbalock); + psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; + spin_unlock_irq(&phba->hbalock); + } + return rc; +} + +/** + * lpfc_sli4_async_mbox_unblock - Block posting SLI4 async mailbox command + * @phba: Pointer to HBA context object. + * + * The function unblocks and resume posting of SLI4 asynchronous mailbox + * commands from the driver internal pending mailbox queue. It makes sure + * that there is no outstanding mailbox command before resuming posting + * asynchronous mailbox commands. If, for any reason, there is outstanding + * mailbox command, it will try to wait it out before resuming asynchronous + * mailbox command posting. + **/ +static void +lpfc_sli4_async_mbox_unblock(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli = &phba->sli; + + spin_lock_irq(&phba->hbalock); + if (!(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { + /* Asynchronous mailbox posting is not blocked, do nothing */ + spin_unlock_irq(&phba->hbalock); + return; + } + + /* Outstanding synchronous mailbox command is guaranteed to be done, + * successful or timeout, after timing-out the outstanding mailbox + * command shall always be removed, so just unblock posting async + * mailbox command and resume + */ + psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK; + spin_unlock_irq(&phba->hbalock); + + /* wake up worker thread to post asynchronlous mailbox command */ + lpfc_worker_wake_up(phba); +} + +/** + * lpfc_sli4_wait_bmbx_ready - Wait for bootstrap mailbox register ready + * @phba: Pointer to HBA context object. + * @mboxq: Pointer to mailbox object. + * + * The function waits for the bootstrap mailbox register ready bit from + * port for twice the regular mailbox command timeout value. + * + * 0 - no timeout on waiting for bootstrap mailbox register ready. + * MBXERR_ERROR - wait for bootstrap mailbox register timed out. + **/ +static int +lpfc_sli4_wait_bmbx_ready(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) +{ + uint32_t db_ready; + unsigned long timeout; + struct lpfc_register bmbx_reg; + + timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mboxq) + * 1000) + jiffies; + + do { + bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr); + db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg); + if (!db_ready) + msleep(2); + + if (time_after(jiffies, timeout)) + return MBXERR_ERROR; + } while (!db_ready); + + return 0; +} + +/** + * lpfc_sli4_post_sync_mbox - Post an SLI4 mailbox to the bootstrap mailbox + * @phba: Pointer to HBA context object. + * @mboxq: Pointer to mailbox object. + * + * The function posts a mailbox to the port. The mailbox is expected + * to be comletely filled in and ready for the port to operate on it. + * This routine executes a synchronous completion operation on the + * mailbox by polling for its completion. + * + * The caller must not be holding any locks when calling this routine. + * + * Returns: + * MBX_SUCCESS - mailbox posted successfully + * Any of the MBX error values. + **/ +static int +lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) +{ + int rc = MBX_SUCCESS; + unsigned long iflag; + uint32_t mcqe_status; + uint32_t mbx_cmnd; + struct lpfc_sli *psli = &phba->sli; + struct lpfc_mqe *mb = &mboxq->u.mqe; + struct lpfc_bmbx_create *mbox_rgn; + struct dma_address *dma_address; + + /* + * Only one mailbox can be active to the bootstrap mailbox region + * at a time and there is no queueing provided. + */ + spin_lock_irqsave(&phba->hbalock, iflag); + if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2532 Mailbox command x%x (x%x/x%x) " + "cannot issue Data: x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, + mboxq->u.mb.mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + psli->sli_flag, MBX_POLL); + return MBXERR_ERROR; + } + /* The server grabs the token and owns it until release */ + psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; + phba->sli.mbox_active = mboxq; + spin_unlock_irqrestore(&phba->hbalock, iflag); + + /* wait for bootstrap mbox register for readyness */ + rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq); + if (rc) + goto exit; + + /* + * Initialize the bootstrap memory region to avoid stale data areas + * in the mailbox post. Then copy the caller's mailbox contents to + * the bmbx mailbox region. + */ + mbx_cmnd = bf_get(lpfc_mqe_command, mb); + memset(phba->sli4_hba.bmbx.avirt, 0, sizeof(struct lpfc_bmbx_create)); + lpfc_sli_pcimem_bcopy(mb, phba->sli4_hba.bmbx.avirt, + sizeof(struct lpfc_mqe)); + + /* Post the high mailbox dma address to the port and wait for ready. */ + dma_address = &phba->sli4_hba.bmbx.dma_address; + writel(dma_address->addr_hi, phba->sli4_hba.BMBXregaddr); + + /* wait for bootstrap mbox register for hi-address write done */ + rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq); + if (rc) + goto exit; + + /* Post the low mailbox dma address to the port. */ + writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr); + + /* wait for bootstrap mbox register for low address write done */ + rc = lpfc_sli4_wait_bmbx_ready(phba, mboxq); + if (rc) + goto exit; + + /* + * Read the CQ to ensure the mailbox has completed. + * If so, update the mailbox status so that the upper layers + * can complete the request normally. + */ + lpfc_sli_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb, + sizeof(struct lpfc_mqe)); + mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt; + lpfc_sli_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe, + sizeof(struct lpfc_mcqe)); + mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe); + /* + * When the CQE status indicates a failure and the mailbox status + * indicates success then copy the CQE status into the mailbox status + * (and prefix it with x4000). + */ + if (mcqe_status != MB_CQE_STATUS_SUCCESS) { + if (bf_get(lpfc_mqe_status, mb) == MBX_SUCCESS) + bf_set(lpfc_mqe_status, mb, + (LPFC_MBX_ERROR_RANGE | mcqe_status)); + rc = MBXERR_ERROR; + } else + lpfc_sli4_swap_str(phba, mboxq); + + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "(%d):0356 Mailbox cmd x%x (x%x/x%x) Status x%x " + "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x" + " x%x x%x CQ: x%x x%x x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd, + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + bf_get(lpfc_mqe_status, mb), + mb->un.mb_words[0], mb->un.mb_words[1], + mb->un.mb_words[2], mb->un.mb_words[3], + mb->un.mb_words[4], mb->un.mb_words[5], + mb->un.mb_words[6], mb->un.mb_words[7], + mb->un.mb_words[8], mb->un.mb_words[9], + mb->un.mb_words[10], mb->un.mb_words[11], + mb->un.mb_words[12], mboxq->mcqe.word0, + mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1, + mboxq->mcqe.trailer); +exit: + /* We are holding the token, no needed for lock when release */ + spin_lock_irqsave(&phba->hbalock, iflag); + psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + phba->sli.mbox_active = NULL; + spin_unlock_irqrestore(&phba->hbalock, iflag); + return rc; +} + +/** + * lpfc_sli_issue_mbox_s4 - Issue an SLI4 mailbox command to firmware + * @phba: Pointer to HBA context object. + * @pmbox: Pointer to mailbox object. + * @flag: Flag indicating how the mailbox need to be processed. + * + * This function is called by discovery code and HBA management code to submit + * a mailbox command to firmware with SLI-4 interface spec. + * + * Return codes the caller owns the mailbox command after the return of the + * function. + **/ +static int +lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq, + uint32_t flag) +{ + struct lpfc_sli *psli = &phba->sli; + unsigned long iflags; + int rc; + + /* dump from issue mailbox command if setup */ + lpfc_idiag_mbxacc_dump_issue_mbox(phba, &mboxq->u.mb); + + rc = lpfc_mbox_dev_check(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2544 Mailbox command x%x (x%x/x%x) " + "cannot issue Data: x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, + mboxq->u.mb.mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + psli->sli_flag, flag); + goto out_not_finished; + } + + /* Detect polling mode and jump to a handler */ + if (!phba->sli4_hba.intr_enable) { + if (flag == MBX_POLL) + rc = lpfc_sli4_post_sync_mbox(phba, mboxq); + else + rc = -EIO; + if (rc != MBX_SUCCESS) + lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, + "(%d):2541 Mailbox command x%x " + "(x%x/x%x) failure: " + "mqe_sta: x%x mcqe_sta: x%x/x%x " + "Data: x%x x%x\n,", + mboxq->vport ? mboxq->vport->vpi : 0, + mboxq->u.mb.mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, + mboxq), + lpfc_sli_config_mbox_opcode_get(phba, + mboxq), + bf_get(lpfc_mqe_status, &mboxq->u.mqe), + bf_get(lpfc_mcqe_status, &mboxq->mcqe), + bf_get(lpfc_mcqe_ext_status, + &mboxq->mcqe), + psli->sli_flag, flag); + return rc; + } else if (flag == MBX_POLL) { + lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI, + "(%d):2542 Try to issue mailbox command " + "x%x (x%x/x%x) synchronously ahead of async" + "mailbox command queue: x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, + mboxq->u.mb.mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + psli->sli_flag, flag); + /* Try to block the asynchronous mailbox posting */ + rc = lpfc_sli4_async_mbox_block(phba); + if (!rc) { + /* Successfully blocked, now issue sync mbox cmd */ + rc = lpfc_sli4_post_sync_mbox(phba, mboxq); + if (rc != MBX_SUCCESS) + lpfc_printf_log(phba, KERN_WARNING, + LOG_MBOX | LOG_SLI, + "(%d):2597 Sync Mailbox command " + "x%x (x%x/x%x) failure: " + "mqe_sta: x%x mcqe_sta: x%x/x%x " + "Data: x%x x%x\n,", + mboxq->vport ? mboxq->vport->vpi : 0, + mboxq->u.mb.mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, + mboxq), + lpfc_sli_config_mbox_opcode_get(phba, + mboxq), + bf_get(lpfc_mqe_status, &mboxq->u.mqe), + bf_get(lpfc_mcqe_status, &mboxq->mcqe), + bf_get(lpfc_mcqe_ext_status, + &mboxq->mcqe), + psli->sli_flag, flag); + /* Unblock the async mailbox posting afterward */ + lpfc_sli4_async_mbox_unblock(phba); + } + return rc; + } + + /* Now, interrupt mode asynchrous mailbox command */ + rc = lpfc_mbox_cmd_check(phba, mboxq); + if (rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2543 Mailbox command x%x (x%x/x%x) " + "cannot issue Data: x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, + mboxq->u.mb.mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + psli->sli_flag, flag); + goto out_not_finished; + } + + /* Put the mailbox command to the driver internal FIFO */ + psli->slistat.mbox_busy++; + spin_lock_irqsave(&phba->hbalock, iflags); + lpfc_mbox_put(phba, mboxq); + spin_unlock_irqrestore(&phba->hbalock, iflags); + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "(%d):0354 Mbox cmd issue - Enqueue Data: " + "x%x (x%x/x%x) x%x x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0xffffff, + bf_get(lpfc_mqe_command, &mboxq->u.mqe), + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + phba->pport->port_state, + psli->sli_flag, MBX_NOWAIT); + /* Wake up worker thread to transport mailbox command from head */ + lpfc_worker_wake_up(phba); + + return MBX_BUSY; + +out_not_finished: + return MBX_NOT_FINISHED; +} + +/** + * lpfc_sli4_post_async_mbox - Post an SLI4 mailbox command to device + * @phba: Pointer to HBA context object. + * + * This function is called by worker thread to send a mailbox command to + * SLI4 HBA firmware. + * + **/ +int +lpfc_sli4_post_async_mbox(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli = &phba->sli; + LPFC_MBOXQ_t *mboxq; + int rc = MBX_SUCCESS; + unsigned long iflags; + struct lpfc_mqe *mqe; + uint32_t mbx_cmnd; + + /* Check interrupt mode before post async mailbox command */ + if (unlikely(!phba->sli4_hba.intr_enable)) + return MBX_NOT_FINISHED; + + /* Check for mailbox command service token */ + spin_lock_irqsave(&phba->hbalock, iflags); + if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) { + spin_unlock_irqrestore(&phba->hbalock, iflags); + return MBX_NOT_FINISHED; + } + if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) { + spin_unlock_irqrestore(&phba->hbalock, iflags); + return MBX_NOT_FINISHED; + } + if (unlikely(phba->sli.mbox_active)) { + spin_unlock_irqrestore(&phba->hbalock, iflags); + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "0384 There is pending active mailbox cmd\n"); + return MBX_NOT_FINISHED; + } + /* Take the mailbox command service token */ + psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE; + + /* Get the next mailbox command from head of queue */ + mboxq = lpfc_mbox_get(phba); + + /* If no more mailbox command waiting for post, we're done */ + if (!mboxq) { + psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + spin_unlock_irqrestore(&phba->hbalock, iflags); + return MBX_SUCCESS; + } + phba->sli.mbox_active = mboxq; + spin_unlock_irqrestore(&phba->hbalock, iflags); + + /* Check device readiness for posting mailbox command */ + rc = lpfc_mbox_dev_check(phba); + if (unlikely(rc)) + /* Driver clean routine will clean up pending mailbox */ + goto out_not_finished; + + /* Prepare the mbox command to be posted */ + mqe = &mboxq->u.mqe; + mbx_cmnd = bf_get(lpfc_mqe_command, mqe); + + /* Start timer for the mbox_tmo and log some mailbox post messages */ + mod_timer(&psli->mbox_tmo, (jiffies + + msecs_to_jiffies(1000 * lpfc_mbox_tmo_val(phba, mboxq)))); + + lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI, + "(%d):0355 Mailbox cmd x%x (x%x/x%x) issue Data: " + "x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd, + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + phba->pport->port_state, psli->sli_flag); + + if (mbx_cmnd != MBX_HEARTBEAT) { + if (mboxq->vport) { + lpfc_debugfs_disc_trc(mboxq->vport, + LPFC_DISC_TRC_MBOX_VPORT, + "MBOX Send vport: cmd:x%x mb:x%x x%x", + mbx_cmnd, mqe->un.mb_words[0], + mqe->un.mb_words[1]); + } else { + lpfc_debugfs_disc_trc(phba->pport, + LPFC_DISC_TRC_MBOX, + "MBOX Send: cmd:x%x mb:x%x x%x", + mbx_cmnd, mqe->un.mb_words[0], + mqe->un.mb_words[1]); + } + } + psli->slistat.mbox_cmd++; + + /* Post the mailbox command to the port */ + rc = lpfc_sli4_mq_put(phba->sli4_hba.mbx_wq, mqe); + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "(%d):2533 Mailbox command x%x (x%x/x%x) " + "cannot issue Data: x%x x%x\n", + mboxq->vport ? mboxq->vport->vpi : 0, + mboxq->u.mb.mbxCommand, + lpfc_sli_config_mbox_subsys_get(phba, mboxq), + lpfc_sli_config_mbox_opcode_get(phba, mboxq), + psli->sli_flag, MBX_NOWAIT); + goto out_not_finished; + } + + return rc; + +out_not_finished: + spin_lock_irqsave(&phba->hbalock, iflags); + if (phba->sli.mbox_active) { + mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED; + __lpfc_mbox_cmpl_put(phba, mboxq); + /* Release the token */ + psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + phba->sli.mbox_active = NULL; + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + + return MBX_NOT_FINISHED; +} + +/** + * lpfc_sli_issue_mbox - Wrapper func for issuing mailbox command + * @phba: Pointer to HBA context object. + * @pmbox: Pointer to mailbox object. + * @flag: Flag indicating how the mailbox need to be processed. + * + * This routine wraps the actual SLI3 or SLI4 mailbox issuing routine from + * the API jump table function pointer from the lpfc_hba struct. + * + * Return codes the caller owns the mailbox command after the return of the + * function. + **/ +int +lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag) +{ + return phba->lpfc_sli_issue_mbox(phba, pmbox, flag); +} + +/** + * lpfc_mbox_api_table_setup - Set up mbox api function jump table + * @phba: The hba struct for which this call is being executed. + * @dev_grp: The HBA PCI-Device group number. + * + * This routine sets up the mbox interface API function jump table in @phba + * struct. + * Returns: 0 - success, -ENODEV - failure. + **/ +int +lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) +{ + + switch (dev_grp) { + case LPFC_PCI_DEV_LP: + phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s3; + phba->lpfc_sli_handle_slow_ring_event = + lpfc_sli_handle_slow_ring_event_s3; + phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s3; + phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s3; + phba->lpfc_sli_brdready = lpfc_sli_brdready_s3; + break; + case LPFC_PCI_DEV_OC: + phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s4; + phba->lpfc_sli_handle_slow_ring_event = + lpfc_sli_handle_slow_ring_event_s4; + phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s4; + phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s4; + phba->lpfc_sli_brdready = lpfc_sli_brdready_s4; + break; + default: + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "1420 Invalid HBA PCI-device group: 0x%x\n", + dev_grp); + return -ENODEV; + break; + } + return 0; +} + +/** + * __lpfc_sli_ringtx_put - Add an iocb to the txq + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @piocb: Pointer to address of newly added command iocb. + * + * This function is called with hbalock held to add a command + * iocb to the txq when SLI layer cannot submit the command iocb + * to the ring. + **/ +void +__lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *piocb) +{ + /* Insert the caller's iocb in the txq tail for later processing. */ + list_add_tail(&piocb->list, &pring->txq); +} + +/** + * lpfc_sli_next_iocb - Get the next iocb in the txq + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @piocb: Pointer to address of newly added command iocb. + * + * This function is called with hbalock held before a new + * iocb is submitted to the firmware. This function checks + * txq to flush the iocbs in txq to Firmware before + * submitting new iocbs to the Firmware. + * If there are iocbs in the txq which need to be submitted + * to firmware, lpfc_sli_next_iocb returns the first element + * of the txq after dequeuing it from txq. + * If there is no iocb in the txq then the function will return + * *piocb and *piocb is set to NULL. Caller needs to check + * *piocb to find if there are more commands in the txq. + **/ +static struct lpfc_iocbq * +lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq **piocb) +{ + struct lpfc_iocbq * nextiocb; + + nextiocb = lpfc_sli_ringtx_get(phba, pring); + if (!nextiocb) { + nextiocb = *piocb; + *piocb = NULL; + } + + return nextiocb; +} + +/** + * __lpfc_sli_issue_iocb_s3 - SLI3 device lockless ver of lpfc_sli_issue_iocb + * @phba: Pointer to HBA context object. + * @ring_number: SLI ring number to issue iocb on. + * @piocb: Pointer to command iocb. + * @flag: Flag indicating if this command can be put into txq. + * + * __lpfc_sli_issue_iocb_s3 is used by other functions in the driver to issue + * an iocb command to an HBA with SLI-3 interface spec. If the PCI slot is + * recovering from error state, if HBA is resetting or if LPFC_STOP_IOCB_EVENT + * flag is turned on, the function returns IOCB_ERROR. When the link is down, + * this function allows only iocbs for posting buffers. This function finds + * next available slot in the command ring and posts the command to the + * available slot and writes the port attention register to request HBA start + * processing new iocb. If there is no slot available in the ring and + * flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the txq, otherwise + * the function returns IOCB_BUSY. + * + * This function is called with hbalock held. The function will return success + * after it successfully submit the iocb to firmware or after adding to the + * txq. + **/ +static int +__lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number, + struct lpfc_iocbq *piocb, uint32_t flag) +{ + struct lpfc_iocbq *nextiocb; + IOCB_t *iocb; + struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number]; + + if (piocb->iocb_cmpl && (!piocb->vport) && + (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) && + (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) { + lpfc_printf_log(phba, KERN_ERR, + LOG_SLI | LOG_VPORT, + "1807 IOCB x%x failed. No vport\n", + piocb->iocb.ulpCommand); + dump_stack(); + return IOCB_ERROR; + } + + + /* If the PCI channel is in offline state, do not post iocbs. */ + if (unlikely(pci_channel_offline(phba->pcidev))) + return IOCB_ERROR; + + /* If HBA has a deferred error attention, fail the iocb. */ + if (unlikely(phba->hba_flag & DEFER_ERATT)) + return IOCB_ERROR; + + /* + * We should never get an IOCB if we are in a < LINK_DOWN state + */ + if (unlikely(phba->link_state < LPFC_LINK_DOWN)) + return IOCB_ERROR; + + /* + * Check to see if we are blocking IOCB processing because of a + * outstanding event. + */ + if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT)) + goto iocb_busy; + + if (unlikely(phba->link_state == LPFC_LINK_DOWN)) { + /* + * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF + * can be issued if the link is not up. + */ + switch (piocb->iocb.ulpCommand) { + case CMD_GEN_REQUEST64_CR: + case CMD_GEN_REQUEST64_CX: + if (!(phba->sli.sli_flag & LPFC_MENLO_MAINT) || + (piocb->iocb.un.genreq64.w5.hcsw.Rctl != + FC_RCTL_DD_UNSOL_CMD) || + (piocb->iocb.un.genreq64.w5.hcsw.Type != + MENLO_TRANSPORT_TYPE)) + + goto iocb_busy; + break; + case CMD_QUE_RING_BUF_CN: + case CMD_QUE_RING_BUF64_CN: + /* + * For IOCBs, like QUE_RING_BUF, that have no rsp ring + * completion, iocb_cmpl MUST be 0. + */ + if (piocb->iocb_cmpl) + piocb->iocb_cmpl = NULL; + /*FALLTHROUGH*/ + case CMD_CREATE_XRI_CR: + case CMD_CLOSE_XRI_CN: + case CMD_CLOSE_XRI_CX: + break; + default: + goto iocb_busy; + } + + /* + * For FCP commands, we must be in a state where we can process link + * attention events. + */ + } else if (unlikely(pring->ringno == phba->sli.fcp_ring && + !(phba->sli.sli_flag & LPFC_PROCESS_LA))) { + goto iocb_busy; + } + + while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) && + (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb))) + lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb); + + if (iocb) + lpfc_sli_update_ring(phba, pring); + else + lpfc_sli_update_full_ring(phba, pring); + + if (!piocb) + return IOCB_SUCCESS; + + goto out_busy; + + iocb_busy: + pring->stats.iocb_cmd_delay++; + + out_busy: + + if (!(flag & SLI_IOCB_RET_IOCB)) { + __lpfc_sli_ringtx_put(phba, pring, piocb); + return IOCB_SUCCESS; + } + + return IOCB_BUSY; +} + +/** + * lpfc_sli4_bpl2sgl - Convert the bpl/bde to a sgl. + * @phba: Pointer to HBA context object. + * @piocb: Pointer to command iocb. + * @sglq: Pointer to the scatter gather queue object. + * + * This routine converts the bpl or bde that is in the IOCB + * to a sgl list for the sli4 hardware. The physical address + * of the bpl/bde is converted back to a virtual address. + * If the IOCB contains a BPL then the list of BDE's is + * converted to sli4_sge's. If the IOCB contains a single + * BDE then it is converted to a single sli_sge. + * The IOCB is still in cpu endianess so the contents of + * the bpl can be used without byte swapping. + * + * Returns valid XRI = Success, NO_XRI = Failure. +**/ +static uint16_t +lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq, + struct lpfc_sglq *sglq) +{ + uint16_t xritag = NO_XRI; + struct ulp_bde64 *bpl = NULL; + struct ulp_bde64 bde; + struct sli4_sge *sgl = NULL; + struct lpfc_dmabuf *dmabuf; + IOCB_t *icmd; + int numBdes = 0; + int i = 0; + uint32_t offset = 0; /* accumulated offset in the sg request list */ + int inbound = 0; /* number of sg reply entries inbound from firmware */ + + if (!piocbq || !sglq) + return xritag; + + sgl = (struct sli4_sge *)sglq->sgl; + icmd = &piocbq->iocb; + if (icmd->ulpCommand == CMD_XMIT_BLS_RSP64_CX) + return sglq->sli4_xritag; + if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) { + numBdes = icmd->un.genreq64.bdl.bdeSize / + sizeof(struct ulp_bde64); + /* The addrHigh and addrLow fields within the IOCB + * have not been byteswapped yet so there is no + * need to swap them back. + */ + if (piocbq->context3) + dmabuf = (struct lpfc_dmabuf *)piocbq->context3; + else + return xritag; + + bpl = (struct ulp_bde64 *)dmabuf->virt; + if (!bpl) + return xritag; + + for (i = 0; i < numBdes; i++) { + /* Should already be byte swapped. */ + sgl->addr_hi = bpl->addrHigh; + sgl->addr_lo = bpl->addrLow; + + sgl->word2 = le32_to_cpu(sgl->word2); + if ((i+1) == numBdes) + bf_set(lpfc_sli4_sge_last, sgl, 1); + else + bf_set(lpfc_sli4_sge_last, sgl, 0); + /* swap the size field back to the cpu so we + * can assign it to the sgl. + */ + bde.tus.w = le32_to_cpu(bpl->tus.w); + sgl->sge_len = cpu_to_le32(bde.tus.f.bdeSize); + /* The offsets in the sgl need to be accumulated + * separately for the request and reply lists. + * The request is always first, the reply follows. + */ + if (piocbq->iocb.ulpCommand == CMD_GEN_REQUEST64_CR) { + /* add up the reply sg entries */ + if (bpl->tus.f.bdeFlags == BUFF_TYPE_BDE_64I) + inbound++; + /* first inbound? reset the offset */ + if (inbound == 1) + offset = 0; + bf_set(lpfc_sli4_sge_offset, sgl, offset); + bf_set(lpfc_sli4_sge_type, sgl, + LPFC_SGE_TYPE_DATA); + offset += bde.tus.f.bdeSize; + } + sgl->word2 = cpu_to_le32(sgl->word2); + bpl++; + sgl++; + } + } else if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BDE_64) { + /* The addrHigh and addrLow fields of the BDE have not + * been byteswapped yet so they need to be swapped + * before putting them in the sgl. + */ + sgl->addr_hi = + cpu_to_le32(icmd->un.genreq64.bdl.addrHigh); + sgl->addr_lo = + cpu_to_le32(icmd->un.genreq64.bdl.addrLow); + sgl->word2 = le32_to_cpu(sgl->word2); + bf_set(lpfc_sli4_sge_last, sgl, 1); + sgl->word2 = cpu_to_le32(sgl->word2); + sgl->sge_len = + cpu_to_le32(icmd->un.genreq64.bdl.bdeSize); + } + return sglq->sli4_xritag; +} + +/** + * lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution + * @phba: Pointer to HBA context object. + * + * This routine performs a roundrobin SCSI command to SLI4 FCP WQ index + * distribution. This is called by __lpfc_sli_issue_iocb_s4() with the hbalock + * held. + * + * Return: index into SLI4 fast-path FCP queue index. + **/ +static inline int +lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba) +{ + struct lpfc_vector_map_info *cpup; + int chann, cpu; + + if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_CPU + && phba->cfg_fcp_io_channel > 1) { + cpu = smp_processor_id(); + if (cpu < phba->sli4_hba.num_present_cpu) { + cpup = phba->sli4_hba.cpu_map; + cpup += cpu; + return cpup->channel_id; + } + } + chann = atomic_add_return(1, &phba->fcp_qidx); + chann = (chann % phba->cfg_fcp_io_channel); + return chann; +} + +/** + * lpfc_sli_iocb2wqe - Convert the IOCB to a work queue entry. + * @phba: Pointer to HBA context object. + * @piocb: Pointer to command iocb. + * @wqe: Pointer to the work queue entry. + * + * This routine converts the iocb command to its Work Queue Entry + * equivalent. The wqe pointer should not have any fields set when + * this routine is called because it will memcpy over them. + * This routine does not set the CQ_ID or the WQEC bits in the + * wqe. + * + * Returns: 0 = Success, IOCB_ERROR = Failure. + **/ +static int +lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq, + union lpfc_wqe *wqe) +{ + uint32_t xmit_len = 0, total_len = 0; + uint8_t ct = 0; + uint32_t fip; + uint32_t abort_tag; + uint8_t command_type = ELS_COMMAND_NON_FIP; + uint8_t cmnd; + uint16_t xritag; + uint16_t abrt_iotag; + struct lpfc_iocbq *abrtiocbq; + struct ulp_bde64 *bpl = NULL; + uint32_t els_id = LPFC_ELS_ID_DEFAULT; + int numBdes, i; + struct ulp_bde64 bde; + struct lpfc_nodelist *ndlp; + uint32_t *pcmd; + uint32_t if_type; + + fip = phba->hba_flag & HBA_FIP_SUPPORT; + /* The fcp commands will set command type */ + if (iocbq->iocb_flag & LPFC_IO_FCP) + command_type = FCP_COMMAND; + else if (fip && (iocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK)) + command_type = ELS_COMMAND_FIP; + else + command_type = ELS_COMMAND_NON_FIP; + + /* Some of the fields are in the right position already */ + memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe)); + abort_tag = (uint32_t) iocbq->iotag; + xritag = iocbq->sli4_xritag; + wqe->generic.wqe_com.word7 = 0; /* The ct field has moved so reset */ + wqe->generic.wqe_com.word10 = 0; + /* words0-2 bpl convert bde */ + if (iocbq->iocb.un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) { + numBdes = iocbq->iocb.un.genreq64.bdl.bdeSize / + sizeof(struct ulp_bde64); + bpl = (struct ulp_bde64 *) + ((struct lpfc_dmabuf *)iocbq->context3)->virt; + if (!bpl) + return IOCB_ERROR; + + /* Should already be byte swapped. */ + wqe->generic.bde.addrHigh = le32_to_cpu(bpl->addrHigh); + wqe->generic.bde.addrLow = le32_to_cpu(bpl->addrLow); + /* swap the size field back to the cpu so we + * can assign it to the sgl. + */ + wqe->generic.bde.tus.w = le32_to_cpu(bpl->tus.w); + xmit_len = wqe->generic.bde.tus.f.bdeSize; + total_len = 0; + for (i = 0; i < numBdes; i++) { + bde.tus.w = le32_to_cpu(bpl[i].tus.w); + total_len += bde.tus.f.bdeSize; + } + } else + xmit_len = iocbq->iocb.un.fcpi64.bdl.bdeSize; + + iocbq->iocb.ulpIoTag = iocbq->iotag; + cmnd = iocbq->iocb.ulpCommand; + + switch (iocbq->iocb.ulpCommand) { + case CMD_ELS_REQUEST64_CR: + if (iocbq->iocb_flag & LPFC_IO_LIBDFC) + ndlp = iocbq->context_un.ndlp; + else + ndlp = (struct lpfc_nodelist *)iocbq->context1; + if (!iocbq->iocb.ulpLe) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2007 Only Limited Edition cmd Format" + " supported 0x%x\n", + iocbq->iocb.ulpCommand); + return IOCB_ERROR; + } + + wqe->els_req.payload_len = xmit_len; + /* Els_reguest64 has a TMO */ + bf_set(wqe_tmo, &wqe->els_req.wqe_com, + iocbq->iocb.ulpTimeout); + /* Need a VF for word 4 set the vf bit*/ + bf_set(els_req64_vf, &wqe->els_req, 0); + /* And a VFID for word 12 */ + bf_set(els_req64_vfid, &wqe->els_req, 0); + ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l); + bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com, + iocbq->iocb.ulpContext); + bf_set(wqe_ct, &wqe->els_req.wqe_com, ct); + bf_set(wqe_pu, &wqe->els_req.wqe_com, 0); + /* CCP CCPE PV PRI in word10 were set in the memcpy */ + if (command_type == ELS_COMMAND_FIP) + els_id = ((iocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK) + >> LPFC_FIP_ELS_ID_SHIFT); + pcmd = (uint32_t *) (((struct lpfc_dmabuf *) + iocbq->context2)->virt); + if_type = bf_get(lpfc_sli_intf_if_type, + &phba->sli4_hba.sli_intf); + if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { + if (pcmd && (*pcmd == ELS_CMD_FLOGI || + *pcmd == ELS_CMD_SCR || + *pcmd == ELS_CMD_FDISC || + *pcmd == ELS_CMD_LOGO || + *pcmd == ELS_CMD_PLOGI)) { + bf_set(els_req64_sp, &wqe->els_req, 1); + bf_set(els_req64_sid, &wqe->els_req, + iocbq->vport->fc_myDID); + if ((*pcmd == ELS_CMD_FLOGI) && + !(phba->fc_topology == + LPFC_TOPOLOGY_LOOP)) + bf_set(els_req64_sid, &wqe->els_req, 0); + bf_set(wqe_ct, &wqe->els_req.wqe_com, 1); + bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com, + phba->vpi_ids[iocbq->vport->vpi]); + } else if (pcmd && iocbq->context1) { + bf_set(wqe_ct, &wqe->els_req.wqe_com, 0); + bf_set(wqe_ctxt_tag, &wqe->els_req.wqe_com, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + } + } + bf_set(wqe_temp_rpi, &wqe->els_req.wqe_com, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + bf_set(wqe_els_id, &wqe->els_req.wqe_com, els_id); + bf_set(wqe_dbde, &wqe->els_req.wqe_com, 1); + bf_set(wqe_iod, &wqe->els_req.wqe_com, LPFC_WQE_IOD_READ); + bf_set(wqe_qosd, &wqe->els_req.wqe_com, 1); + bf_set(wqe_lenloc, &wqe->els_req.wqe_com, LPFC_WQE_LENLOC_NONE); + bf_set(wqe_ebde_cnt, &wqe->els_req.wqe_com, 0); + wqe->els_req.max_response_payload_len = total_len - xmit_len; + break; + case CMD_XMIT_SEQUENCE64_CX: + bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, + iocbq->iocb.un.ulpWord[3]); + bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, + iocbq->iocb.unsli3.rcvsli3.ox_id); + /* The entire sequence is transmitted for this IOCB */ + xmit_len = total_len; + cmnd = CMD_XMIT_SEQUENCE64_CR; + if (phba->link_flag & LS_LOOPBACK_MODE) + bf_set(wqe_xo, &wqe->xmit_sequence.wge_ctl, 1); + case CMD_XMIT_SEQUENCE64_CR: + /* word3 iocb=io_tag32 wqe=reserved */ + wqe->xmit_sequence.rsvd3 = 0; + /* word4 relative_offset memcpy */ + /* word5 r_ctl/df_ctl memcpy */ + bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0); + bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1); + bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, + LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com, + LPFC_WQE_LENLOC_WORD12); + bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0); + wqe->xmit_sequence.xmit_len = xmit_len; + command_type = OTHER_COMMAND; + break; + case CMD_XMIT_BCAST64_CN: + /* word3 iocb=iotag32 wqe=seq_payload_len */ + wqe->xmit_bcast64.seq_payload_len = xmit_len; + /* word4 iocb=rsvd wqe=rsvd */ + /* word5 iocb=rctl/type/df_ctl wqe=rctl/type/df_ctl memcpy */ + /* word6 iocb=ctxt_tag/io_tag wqe=ctxt_tag/xri */ + bf_set(wqe_ct, &wqe->xmit_bcast64.wqe_com, + ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); + bf_set(wqe_dbde, &wqe->xmit_bcast64.wqe_com, 1); + bf_set(wqe_iod, &wqe->xmit_bcast64.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe->xmit_bcast64.wqe_com, + LPFC_WQE_LENLOC_WORD3); + bf_set(wqe_ebde_cnt, &wqe->xmit_bcast64.wqe_com, 0); + break; + case CMD_FCP_IWRITE64_CR: + command_type = FCP_COMMAND_DATA_OUT; + /* word3 iocb=iotag wqe=payload_offset_len */ + /* Add the FCP_CMD and FCP_RSP sizes to get the offset */ + bf_set(payload_offset_len, &wqe->fcp_iwrite, + xmit_len + sizeof(struct fcp_rsp)); + bf_set(cmd_buff_len, &wqe->fcp_iwrite, + 0); + /* word4 iocb=parameter wqe=total_xfer_length memcpy */ + /* word5 iocb=initial_xfer_len wqe=initial_xfer_len memcpy */ + bf_set(wqe_erp, &wqe->fcp_iwrite.wqe_com, + iocbq->iocb.ulpFCP2Rcvy); + bf_set(wqe_lnk, &wqe->fcp_iwrite.wqe_com, iocbq->iocb.ulpXS); + /* Always open the exchange */ + bf_set(wqe_xc, &wqe->fcp_iwrite.wqe_com, 0); + bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, + LPFC_WQE_LENLOC_WORD4); + bf_set(wqe_ebde_cnt, &wqe->fcp_iwrite.wqe_com, 0); + bf_set(wqe_pu, &wqe->fcp_iwrite.wqe_com, iocbq->iocb.ulpPU); + bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 1); + if (iocbq->iocb_flag & LPFC_IO_OAS) { + bf_set(wqe_oas, &wqe->fcp_iwrite.wqe_com, 1); + if (phba->cfg_XLanePriority) { + bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1); + bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com, + (phba->cfg_XLanePriority << 1)); + } + } + break; + case CMD_FCP_IREAD64_CR: + /* word3 iocb=iotag wqe=payload_offset_len */ + /* Add the FCP_CMD and FCP_RSP sizes to get the offset */ + bf_set(payload_offset_len, &wqe->fcp_iread, + xmit_len + sizeof(struct fcp_rsp)); + bf_set(cmd_buff_len, &wqe->fcp_iread, + 0); + /* word4 iocb=parameter wqe=total_xfer_length memcpy */ + /* word5 iocb=initial_xfer_len wqe=initial_xfer_len memcpy */ + bf_set(wqe_erp, &wqe->fcp_iread.wqe_com, + iocbq->iocb.ulpFCP2Rcvy); + bf_set(wqe_lnk, &wqe->fcp_iread.wqe_com, iocbq->iocb.ulpXS); + /* Always open the exchange */ + bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0); + bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, LPFC_WQE_IOD_READ); + bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, + LPFC_WQE_LENLOC_WORD4); + bf_set(wqe_ebde_cnt, &wqe->fcp_iread.wqe_com, 0); + bf_set(wqe_pu, &wqe->fcp_iread.wqe_com, iocbq->iocb.ulpPU); + bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 1); + if (iocbq->iocb_flag & LPFC_IO_OAS) { + bf_set(wqe_oas, &wqe->fcp_iread.wqe_com, 1); + if (phba->cfg_XLanePriority) { + bf_set(wqe_ccpe, &wqe->fcp_iread.wqe_com, 1); + bf_set(wqe_ccp, &wqe->fcp_iread.wqe_com, + (phba->cfg_XLanePriority << 1)); + } + } + break; + case CMD_FCP_ICMND64_CR: + /* word3 iocb=iotag wqe=payload_offset_len */ + /* Add the FCP_CMD and FCP_RSP sizes to get the offset */ + bf_set(payload_offset_len, &wqe->fcp_icmd, + xmit_len + sizeof(struct fcp_rsp)); + bf_set(cmd_buff_len, &wqe->fcp_icmd, + 0); + /* word3 iocb=IO_TAG wqe=reserved */ + bf_set(wqe_pu, &wqe->fcp_icmd.wqe_com, 0); + /* Always open the exchange */ + bf_set(wqe_xc, &wqe->fcp_icmd.wqe_com, 0); + bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 1); + bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1); + bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, + LPFC_WQE_LENLOC_NONE); + bf_set(wqe_ebde_cnt, &wqe->fcp_icmd.wqe_com, 0); + bf_set(wqe_erp, &wqe->fcp_icmd.wqe_com, + iocbq->iocb.ulpFCP2Rcvy); + if (iocbq->iocb_flag & LPFC_IO_OAS) { + bf_set(wqe_oas, &wqe->fcp_icmd.wqe_com, 1); + if (phba->cfg_XLanePriority) { + bf_set(wqe_ccpe, &wqe->fcp_icmd.wqe_com, 1); + bf_set(wqe_ccp, &wqe->fcp_icmd.wqe_com, + (phba->cfg_XLanePriority << 1)); + } + } + break; + case CMD_GEN_REQUEST64_CR: + /* For this command calculate the xmit length of the + * request bde. + */ + xmit_len = 0; + numBdes = iocbq->iocb.un.genreq64.bdl.bdeSize / + sizeof(struct ulp_bde64); + for (i = 0; i < numBdes; i++) { + bde.tus.w = le32_to_cpu(bpl[i].tus.w); + if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) + break; + xmit_len += bde.tus.f.bdeSize; + } + /* word3 iocb=IO_TAG wqe=request_payload_len */ + wqe->gen_req.request_payload_len = xmit_len; + /* word4 iocb=parameter wqe=relative_offset memcpy */ + /* word5 [rctl, type, df_ctl, la] copied in memcpy */ + /* word6 context tag copied in memcpy */ + if (iocbq->iocb.ulpCt_h || iocbq->iocb.ulpCt_l) { + ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l); + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2015 Invalid CT %x command 0x%x\n", + ct, iocbq->iocb.ulpCommand); + return IOCB_ERROR; + } + bf_set(wqe_ct, &wqe->gen_req.wqe_com, 0); + bf_set(wqe_tmo, &wqe->gen_req.wqe_com, iocbq->iocb.ulpTimeout); + bf_set(wqe_pu, &wqe->gen_req.wqe_com, iocbq->iocb.ulpPU); + bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); + bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); + bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); + bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); + bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); + wqe->gen_req.max_response_payload_len = total_len - xmit_len; + command_type = OTHER_COMMAND; + break; + case CMD_XMIT_ELS_RSP64_CX: + ndlp = (struct lpfc_nodelist *)iocbq->context1; + /* words0-2 BDE memcpy */ + /* word3 iocb=iotag32 wqe=response_payload_len */ + wqe->xmit_els_rsp.response_payload_len = xmit_len; + /* word4 */ + wqe->xmit_els_rsp.word4 = 0; + /* word5 iocb=rsvd wge=did */ + bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest, + iocbq->iocb.un.xseq64.xmit_els_remoteID); + + if_type = bf_get(lpfc_sli_intf_if_type, + &phba->sli4_hba.sli_intf); + if (if_type == LPFC_SLI_INTF_IF_TYPE_2) { + if (iocbq->vport->fc_flag & FC_PT2PT) { + bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1); + bf_set(els_rsp64_sid, &wqe->xmit_els_rsp, + iocbq->vport->fc_myDID); + if (iocbq->vport->fc_myDID == Fabric_DID) { + bf_set(wqe_els_did, + &wqe->xmit_els_rsp.wqe_dest, 0); + } + } + } + bf_set(wqe_ct, &wqe->xmit_els_rsp.wqe_com, + ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); + bf_set(wqe_pu, &wqe->xmit_els_rsp.wqe_com, iocbq->iocb.ulpPU); + bf_set(wqe_rcvoxid, &wqe->xmit_els_rsp.wqe_com, + iocbq->iocb.unsli3.rcvsli3.ox_id); + if (!iocbq->iocb.ulpCt_h && iocbq->iocb.ulpCt_l) + bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, + phba->vpi_ids[iocbq->vport->vpi]); + bf_set(wqe_dbde, &wqe->xmit_els_rsp.wqe_com, 1); + bf_set(wqe_iod, &wqe->xmit_els_rsp.wqe_com, LPFC_WQE_IOD_WRITE); + bf_set(wqe_qosd, &wqe->xmit_els_rsp.wqe_com, 1); + bf_set(wqe_lenloc, &wqe->xmit_els_rsp.wqe_com, + LPFC_WQE_LENLOC_WORD3); + bf_set(wqe_ebde_cnt, &wqe->xmit_els_rsp.wqe_com, 0); + bf_set(wqe_rsp_temp_rpi, &wqe->xmit_els_rsp, + phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); + pcmd = (uint32_t *) (((struct lpfc_dmabuf *) + iocbq->context2)->virt); + if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { + bf_set(els_rsp64_sp, &wqe->xmit_els_rsp, 1); + bf_set(els_rsp64_sid, &wqe->xmit_els_rsp, + iocbq->vport->fc_myDID); + bf_set(wqe_ct, &wqe->xmit_els_rsp.wqe_com, 1); + bf_set(wqe_ctxt_tag, &wqe->xmit_els_rsp.wqe_com, + phba->vpi_ids[phba->pport->vpi]); + } + command_type = OTHER_COMMAND; + break; + case CMD_CLOSE_XRI_CN: + case CMD_ABORT_XRI_CN: + case CMD_ABORT_XRI_CX: + /* words 0-2 memcpy should be 0 rserved */ + /* port will send abts */ + abrt_iotag = iocbq->iocb.un.acxri.abortContextTag; + if (abrt_iotag != 0 && abrt_iotag <= phba->sli.last_iotag) { + abrtiocbq = phba->sli.iocbq_lookup[abrt_iotag]; + fip = abrtiocbq->iocb_flag & LPFC_FIP_ELS_ID_MASK; + } else + fip = 0; + + if ((iocbq->iocb.ulpCommand == CMD_CLOSE_XRI_CN) || fip) + /* + * The link is down, or the command was ELS_FIP + * so the fw does not need to send abts + * on the wire. + */ + bf_set(abort_cmd_ia, &wqe->abort_cmd, 1); + else + bf_set(abort_cmd_ia, &wqe->abort_cmd, 0); + bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG); + /* word5 iocb=CONTEXT_TAG|IO_TAG wqe=reserved */ + wqe->abort_cmd.rsrvd5 = 0; + bf_set(wqe_ct, &wqe->abort_cmd.wqe_com, + ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l)); + abort_tag = iocbq->iocb.un.acxri.abortIoTag; + /* + * The abort handler will send us CMD_ABORT_XRI_CN or + * CMD_CLOSE_XRI_CN and the fw only accepts CMD_ABORT_XRI_CX + */ + bf_set(wqe_cmnd, &wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX); + bf_set(wqe_qosd, &wqe->abort_cmd.wqe_com, 1); + bf_set(wqe_lenloc, &wqe->abort_cmd.wqe_com, + LPFC_WQE_LENLOC_NONE); + cmnd = CMD_ABORT_XRI_CX; + command_type = OTHER_COMMAND; + xritag = 0; + break; + case CMD_XMIT_BLS_RSP64_CX: + ndlp = (struct lpfc_nodelist *)iocbq->context1; + /* As BLS ABTS RSP WQE is very different from other WQEs, + * we re-construct this WQE here based on information in + * iocbq from scratch. + */ + memset(wqe, 0, sizeof(union lpfc_wqe)); + /* OX_ID is invariable to who sent ABTS to CT exchange */ + bf_set(xmit_bls_rsp64_oxid, &wqe->xmit_bls_rsp, + bf_get(lpfc_abts_oxid, &iocbq->iocb.un.bls_rsp)); + if (bf_get(lpfc_abts_orig, &iocbq->iocb.un.bls_rsp) == + LPFC_ABTS_UNSOL_INT) { + /* ABTS sent by initiator to CT exchange, the + * RX_ID field will be filled with the newly + * allocated responder XRI. + */ + bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp, + iocbq->sli4_xritag); + } else { + /* ABTS sent by responder to CT exchange, the + * RX_ID field will be filled with the responder + * RX_ID from ABTS. + */ + bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp, + bf_get(lpfc_abts_rxid, &iocbq->iocb.un.bls_rsp)); + } + bf_set(xmit_bls_rsp64_seqcnthi, &wqe->xmit_bls_rsp, 0xffff); + bf_set(wqe_xmit_bls_pt, &wqe->xmit_bls_rsp.wqe_dest, 0x1); + + /* Use CT=VPI */ + bf_set(wqe_els_did, &wqe->xmit_bls_rsp.wqe_dest, + ndlp->nlp_DID); + bf_set(xmit_bls_rsp64_temprpi, &wqe->xmit_bls_rsp, + iocbq->iocb.ulpContext); + bf_set(wqe_ct, &wqe->xmit_bls_rsp.wqe_com, 1); + bf_set(wqe_ctxt_tag, &wqe->xmit_bls_rsp.wqe_com, + phba->vpi_ids[phba->pport->vpi]); + bf_set(wqe_qosd, &wqe->xmit_bls_rsp.wqe_com, 1); + bf_set(wqe_lenloc, &wqe->xmit_bls_rsp.wqe_com, + LPFC_WQE_LENLOC_NONE); + /* Overwrite the pre-set comnd type with OTHER_COMMAND */ + command_type = OTHER_COMMAND; + if (iocbq->iocb.un.xseq64.w5.hcsw.Rctl == FC_RCTL_BA_RJT) { + bf_set(xmit_bls_rsp64_rjt_vspec, &wqe->xmit_bls_rsp, + bf_get(lpfc_vndr_code, &iocbq->iocb.un.bls_rsp)); + bf_set(xmit_bls_rsp64_rjt_expc, &wqe->xmit_bls_rsp, + bf_get(lpfc_rsn_expln, &iocbq->iocb.un.bls_rsp)); + bf_set(xmit_bls_rsp64_rjt_rsnc, &wqe->xmit_bls_rsp, + bf_get(lpfc_rsn_code, &iocbq->iocb.un.bls_rsp)); + } + + break; + case CMD_XRI_ABORTED_CX: + case CMD_CREATE_XRI_CR: /* Do we expect to use this? */ + case CMD_IOCB_FCP_IBIDIR64_CR: /* bidirectional xfer */ + case CMD_FCP_TSEND64_CX: /* Target mode send xfer-ready */ + case CMD_FCP_TRSP64_CX: /* Target mode rcv */ + case CMD_FCP_AUTO_TRSP_CX: /* Auto target rsp */ + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2014 Invalid command 0x%x\n", + iocbq->iocb.ulpCommand); + return IOCB_ERROR; + break; + } + + if (iocbq->iocb_flag & LPFC_IO_DIF_PASS) + bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_PASSTHRU); + else if (iocbq->iocb_flag & LPFC_IO_DIF_STRIP) + bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_STRIP); + else if (iocbq->iocb_flag & LPFC_IO_DIF_INSERT) + bf_set(wqe_dif, &wqe->generic.wqe_com, LPFC_WQE_DIF_INSERT); + iocbq->iocb_flag &= ~(LPFC_IO_DIF_PASS | LPFC_IO_DIF_STRIP | + LPFC_IO_DIF_INSERT); + bf_set(wqe_xri_tag, &wqe->generic.wqe_com, xritag); + bf_set(wqe_reqtag, &wqe->generic.wqe_com, iocbq->iotag); + wqe->generic.wqe_com.abort_tag = abort_tag; + bf_set(wqe_cmd_type, &wqe->generic.wqe_com, command_type); + bf_set(wqe_cmnd, &wqe->generic.wqe_com, cmnd); + bf_set(wqe_class, &wqe->generic.wqe_com, iocbq->iocb.ulpClass); + bf_set(wqe_cqid, &wqe->generic.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); + return 0; +} + +/** + * __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb + * @phba: Pointer to HBA context object. + * @ring_number: SLI ring number to issue iocb on. + * @piocb: Pointer to command iocb. + * @flag: Flag indicating if this command can be put into txq. + * + * __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue + * an iocb command to an HBA with SLI-4 interface spec. + * + * This function is called with hbalock held. The function will return success + * after it successfully submit the iocb to firmware or after adding to the + * txq. + **/ +static int +__lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number, + struct lpfc_iocbq *piocb, uint32_t flag) +{ + struct lpfc_sglq *sglq; + union lpfc_wqe wqe; + struct lpfc_queue *wq; + struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number]; + + if (piocb->sli4_xritag == NO_XRI) { + if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN || + piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) + sglq = NULL; + else { + if (!list_empty(&pring->txq)) { + if (!(flag & SLI_IOCB_RET_IOCB)) { + __lpfc_sli_ringtx_put(phba, + pring, piocb); + return IOCB_SUCCESS; + } else { + return IOCB_BUSY; + } + } else { + sglq = __lpfc_sli_get_sglq(phba, piocb); + if (!sglq) { + if (!(flag & SLI_IOCB_RET_IOCB)) { + __lpfc_sli_ringtx_put(phba, + pring, + piocb); + return IOCB_SUCCESS; + } else + return IOCB_BUSY; + } + } + } + } else if (piocb->iocb_flag & LPFC_IO_FCP) { + /* These IO's already have an XRI and a mapped sgl. */ + sglq = NULL; + } else { + /* + * This is a continuation of a commandi,(CX) so this + * sglq is on the active list + */ + sglq = __lpfc_get_active_sglq(phba, piocb->sli4_lxritag); + if (!sglq) + return IOCB_ERROR; + } + + if (sglq) { + piocb->sli4_lxritag = sglq->sli4_lxritag; + piocb->sli4_xritag = sglq->sli4_xritag; + if (NO_XRI == lpfc_sli4_bpl2sgl(phba, piocb, sglq)) + return IOCB_ERROR; + } + + if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe)) + return IOCB_ERROR; + + if ((piocb->iocb_flag & LPFC_IO_FCP) || + (piocb->iocb_flag & LPFC_USE_FCPWQIDX)) { + if (!phba->cfg_fof || (!(piocb->iocb_flag & LPFC_IO_OAS))) { + wq = phba->sli4_hba.fcp_wq[piocb->fcp_wqidx]; + } else { + wq = phba->sli4_hba.oas_wq; + } + if (lpfc_sli4_wq_put(wq, &wqe)) + return IOCB_ERROR; + } else { + if (unlikely(!phba->sli4_hba.els_wq)) + return IOCB_ERROR; + if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe)) + return IOCB_ERROR; + } + lpfc_sli_ringtxcmpl_put(phba, pring, piocb); + + return 0; +} + +/** + * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb + * + * This routine wraps the actual lockless version for issusing IOCB function + * pointer from the lpfc_hba struct. + * + * Return codes: + * IOCB_ERROR - Error + * IOCB_SUCCESS - Success + * IOCB_BUSY - Busy + **/ +int +__lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number, + struct lpfc_iocbq *piocb, uint32_t flag) +{ + return phba->__lpfc_sli_issue_iocb(phba, ring_number, piocb, flag); +} + +/** + * lpfc_sli_api_table_setup - Set up sli api function jump table + * @phba: The hba struct for which this call is being executed. + * @dev_grp: The HBA PCI-Device group number. + * + * This routine sets up the SLI interface API function jump table in @phba + * struct. + * Returns: 0 - success, -ENODEV - failure. + **/ +int +lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) +{ + + switch (dev_grp) { + case LPFC_PCI_DEV_LP: + phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3; + phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3; + break; + case LPFC_PCI_DEV_OC: + phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4; + phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4; + break; + default: + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "1419 Invalid HBA PCI-device group: 0x%x\n", + dev_grp); + return -ENODEV; + break; + } + phba->lpfc_get_iocb_from_iocbq = lpfc_get_iocb_from_iocbq; + return 0; +} + +int +lpfc_sli_calc_ring(struct lpfc_hba *phba, uint32_t ring_number, + struct lpfc_iocbq *piocb) +{ + uint32_t idx; + + if (phba->sli_rev == LPFC_SLI_REV4) { + if (piocb->iocb_flag & (LPFC_IO_FCP | LPFC_USE_FCPWQIDX)) { + /* + * fcp_wqidx should already be setup based on what + * completion queue we want to use. + */ + if (!(phba->cfg_fof) || + (!(piocb->iocb_flag & LPFC_IO_FOF))) { + if (unlikely(!phba->sli4_hba.fcp_wq)) + return LPFC_HBA_ERROR; + idx = lpfc_sli4_scmd_to_wqidx_distr(phba); + piocb->fcp_wqidx = idx; + ring_number = MAX_SLI3_CONFIGURED_RINGS + idx; + } else { + if (unlikely(!phba->sli4_hba.oas_wq)) + return LPFC_HBA_ERROR; + idx = 0; + piocb->fcp_wqidx = idx; + ring_number = LPFC_FCP_OAS_RING; + } + } + } + return ring_number; +} + +/** + * lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @piocb: Pointer to command iocb. + * @flag: Flag indicating if this command can be put into txq. + * + * lpfc_sli_issue_iocb is a wrapper around __lpfc_sli_issue_iocb + * function. This function gets the hbalock and calls + * __lpfc_sli_issue_iocb function and will return the error returned + * by __lpfc_sli_issue_iocb function. This wrapper is used by + * functions which do not hold hbalock. + **/ +int +lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number, + struct lpfc_iocbq *piocb, uint32_t flag) +{ + struct lpfc_fcp_eq_hdl *fcp_eq_hdl; + struct lpfc_sli_ring *pring; + struct lpfc_queue *fpeq; + struct lpfc_eqe *eqe; + unsigned long iflags; + int rc, idx; + + if (phba->sli_rev == LPFC_SLI_REV4) { + ring_number = lpfc_sli_calc_ring(phba, ring_number, piocb); + if (unlikely(ring_number == LPFC_HBA_ERROR)) + return IOCB_ERROR; + idx = piocb->fcp_wqidx; + + pring = &phba->sli.ring[ring_number]; + spin_lock_irqsave(&pring->ring_lock, iflags); + rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag); + spin_unlock_irqrestore(&pring->ring_lock, iflags); + + if (lpfc_fcp_look_ahead && (piocb->iocb_flag & LPFC_IO_FCP)) { + fcp_eq_hdl = &phba->sli4_hba.fcp_eq_hdl[idx]; + + if (atomic_dec_and_test(&fcp_eq_hdl-> + fcp_eq_in_use)) { + + /* Get associated EQ with this index */ + fpeq = phba->sli4_hba.hba_eq[idx]; + + /* Turn off interrupts from this EQ */ + lpfc_sli4_eq_clr_intr(fpeq); + + /* + * Process all the events on FCP EQ + */ + while ((eqe = lpfc_sli4_eq_get(fpeq))) { + lpfc_sli4_hba_handle_eqe(phba, + eqe, idx); + fpeq->EQ_processed++; + } + + /* Always clear and re-arm the EQ */ + lpfc_sli4_eq_release(fpeq, + LPFC_QUEUE_REARM); + } + atomic_inc(&fcp_eq_hdl->fcp_eq_in_use); + } + } else { + /* For now, SLI2/3 will still use hbalock */ + spin_lock_irqsave(&phba->hbalock, iflags); + rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag); + spin_unlock_irqrestore(&phba->hbalock, iflags); + } + return rc; +} + +/** + * lpfc_extra_ring_setup - Extra ring setup function + * @phba: Pointer to HBA context object. + * + * This function is called while driver attaches with the + * HBA to setup the extra ring. The extra ring is used + * only when driver needs to support target mode functionality + * or IP over FC functionalities. + * + * This function is called with no lock held. + **/ +static int +lpfc_extra_ring_setup( struct lpfc_hba *phba) +{ + struct lpfc_sli *psli; + struct lpfc_sli_ring *pring; + + psli = &phba->sli; + + /* Adjust cmd/rsp ring iocb entries more evenly */ + + /* Take some away from the FCP ring */ + pring = &psli->ring[psli->fcp_ring]; + pring->sli.sli3.numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES; + pring->sli.sli3.numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES; + pring->sli.sli3.numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES; + pring->sli.sli3.numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES; + + /* and give them to the extra ring */ + pring = &psli->ring[psli->extra_ring]; + + pring->sli.sli3.numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES; + pring->sli.sli3.numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES; + pring->sli.sli3.numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES; + pring->sli.sli3.numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES; + + /* Setup default profile for this ring */ + pring->iotag_max = 4096; + pring->num_mask = 1; + pring->prt[0].profile = 0; /* Mask 0 */ + pring->prt[0].rctl = phba->cfg_multi_ring_rctl; + pring->prt[0].type = phba->cfg_multi_ring_type; + pring->prt[0].lpfc_sli_rcv_unsol_event = NULL; + return 0; +} + +/* lpfc_sli_abts_err_handler - handle a failed ABTS request from an SLI3 port. + * @phba: Pointer to HBA context object. + * @iocbq: Pointer to iocb object. + * + * The async_event handler calls this routine when it receives + * an ASYNC_STATUS_CN event from the port. The port generates + * this event when an Abort Sequence request to an rport fails + * twice in succession. The abort could be originated by the + * driver or by the port. The ABTS could have been for an ELS + * or FCP IO. The port only generates this event when an ABTS + * fails to complete after one retry. + */ +static void +lpfc_sli_abts_err_handler(struct lpfc_hba *phba, + struct lpfc_iocbq *iocbq) +{ + struct lpfc_nodelist *ndlp = NULL; + uint16_t rpi = 0, vpi = 0; + struct lpfc_vport *vport = NULL; + + /* The rpi in the ulpContext is vport-sensitive. */ + vpi = iocbq->iocb.un.asyncstat.sub_ctxt_tag; + rpi = iocbq->iocb.ulpContext; + + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "3092 Port generated ABTS async event " + "on vpi %d rpi %d status 0x%x\n", + vpi, rpi, iocbq->iocb.ulpStatus); + + vport = lpfc_find_vport_by_vpid(phba, vpi); + if (!vport) + goto err_exit; + ndlp = lpfc_findnode_rpi(vport, rpi); + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) + goto err_exit; + + if (iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT) + lpfc_sli_abts_recover_port(vport, ndlp); + return; + + err_exit: + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "3095 Event Context not found, no " + "action on vpi %d rpi %d status 0x%x, reason 0x%x\n", + iocbq->iocb.ulpContext, iocbq->iocb.ulpStatus, + vpi, rpi); +} + +/* lpfc_sli4_abts_err_handler - handle a failed ABTS request from an SLI4 port. + * @phba: pointer to HBA context object. + * @ndlp: nodelist pointer for the impacted rport. + * @axri: pointer to the wcqe containing the failed exchange. + * + * The driver calls this routine when it receives an ABORT_XRI_FCP CQE from the + * port. The port generates this event when an abort exchange request to an + * rport fails twice in succession with no reply. The abort could be originated + * by the driver or by the port. The ABTS could have been for an ELS or FCP IO. + */ +void +lpfc_sli4_abts_err_handler(struct lpfc_hba *phba, + struct lpfc_nodelist *ndlp, + struct sli4_wcqe_xri_aborted *axri) +{ + struct lpfc_vport *vport; + uint32_t ext_status = 0; + + if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "3115 Node Context not found, driver " + "ignoring abts err event\n"); + return; + } + + vport = ndlp->vport; + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "3116 Port generated FCP XRI ABORT event on " + "vpi %d rpi %d xri x%x status 0x%x parameter x%x\n", + ndlp->vport->vpi, phba->sli4_hba.rpi_ids[ndlp->nlp_rpi], + bf_get(lpfc_wcqe_xa_xri, axri), + bf_get(lpfc_wcqe_xa_status, axri), + axri->parameter); + + /* + * Catch the ABTS protocol failure case. Older OCe FW releases returned + * LOCAL_REJECT and 0 for a failed ABTS exchange and later OCe and + * LPe FW releases returned LOCAL_REJECT and SEQUENCE_TIMEOUT. + */ + ext_status = axri->parameter & IOERR_PARAM_MASK; + if ((bf_get(lpfc_wcqe_xa_status, axri) == IOSTAT_LOCAL_REJECT) && + ((ext_status == IOERR_SEQUENCE_TIMEOUT) || (ext_status == 0))) + lpfc_sli_abts_recover_port(vport, ndlp); +} + +/** + * lpfc_sli_async_event_handler - ASYNC iocb handler function + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @iocbq: Pointer to iocb object. + * + * This function is called by the slow ring event handler + * function when there is an ASYNC event iocb in the ring. + * This function is called with no lock held. + * Currently this function handles only temperature related + * ASYNC events. The function decodes the temperature sensor + * event message and posts events for the management applications. + **/ +static void +lpfc_sli_async_event_handler(struct lpfc_hba * phba, + struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq) +{ + IOCB_t *icmd; + uint16_t evt_code; + struct temp_event temp_event_data; + struct Scsi_Host *shost; + uint32_t *iocb_w; + + icmd = &iocbq->iocb; + evt_code = icmd->un.asyncstat.evt_code; + + switch (evt_code) { + case ASYNC_TEMP_WARN: + case ASYNC_TEMP_SAFE: + temp_event_data.data = (uint32_t) icmd->ulpContext; + temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT; + if (evt_code == ASYNC_TEMP_WARN) { + temp_event_data.event_code = LPFC_THRESHOLD_TEMP; + lpfc_printf_log(phba, KERN_ERR, LOG_TEMP, + "0347 Adapter is very hot, please take " + "corrective action. temperature : %d Celsius\n", + (uint32_t) icmd->ulpContext); + } else { + temp_event_data.event_code = LPFC_NORMAL_TEMP; + lpfc_printf_log(phba, KERN_ERR, LOG_TEMP, + "0340 Adapter temperature is OK now. " + "temperature : %d Celsius\n", + (uint32_t) icmd->ulpContext); + } + + /* Send temperature change event to applications */ + shost = lpfc_shost_from_vport(phba->pport); + fc_host_post_vendor_event(shost, fc_get_event_number(), + sizeof(temp_event_data), (char *) &temp_event_data, + LPFC_NL_VENDOR_ID); + break; + case ASYNC_STATUS_CN: + lpfc_sli_abts_err_handler(phba, iocbq); + break; + default: + iocb_w = (uint32_t *) icmd; + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0346 Ring %d handler: unexpected ASYNC_STATUS" + " evt_code 0x%x\n" + "W0 0x%08x W1 0x%08x W2 0x%08x W3 0x%08x\n" + "W4 0x%08x W5 0x%08x W6 0x%08x W7 0x%08x\n" + "W8 0x%08x W9 0x%08x W10 0x%08x W11 0x%08x\n" + "W12 0x%08x W13 0x%08x W14 0x%08x W15 0x%08x\n", + pring->ringno, icmd->un.asyncstat.evt_code, + iocb_w[0], iocb_w[1], iocb_w[2], iocb_w[3], + iocb_w[4], iocb_w[5], iocb_w[6], iocb_w[7], + iocb_w[8], iocb_w[9], iocb_w[10], iocb_w[11], + iocb_w[12], iocb_w[13], iocb_w[14], iocb_w[15]); + + break; + } +} + + +/** + * lpfc_sli_setup - SLI ring setup function + * @phba: Pointer to HBA context object. + * + * lpfc_sli_setup sets up rings of the SLI interface with + * number of iocbs per ring and iotags. This function is + * called while driver attach to the HBA and before the + * interrupts are enabled. So there is no need for locking. + * + * This function always returns 0. + **/ +int +lpfc_sli_setup(struct lpfc_hba *phba) +{ + int i, totiocbsize = 0; + struct lpfc_sli *psli = &phba->sli; + struct lpfc_sli_ring *pring; + + psli->num_rings = MAX_SLI3_CONFIGURED_RINGS; + if (phba->sli_rev == LPFC_SLI_REV4) + psli->num_rings += phba->cfg_fcp_io_channel; + psli->sli_flag = 0; + psli->fcp_ring = LPFC_FCP_RING; + psli->next_ring = LPFC_FCP_NEXT_RING; + psli->extra_ring = LPFC_EXTRA_RING; + + psli->iocbq_lookup = NULL; + psli->iocbq_lookup_len = 0; + psli->last_iotag = 0; + + for (i = 0; i < psli->num_rings; i++) { + pring = &psli->ring[i]; + switch (i) { + case LPFC_FCP_RING: /* ring 0 - FCP */ + /* numCiocb and numRiocb are used in config_port */ + pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R0_ENTRIES; + pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R0_ENTRIES; + pring->sli.sli3.numCiocb += + SLI2_IOCB_CMD_R1XTRA_ENTRIES; + pring->sli.sli3.numRiocb += + SLI2_IOCB_RSP_R1XTRA_ENTRIES; + pring->sli.sli3.numCiocb += + SLI2_IOCB_CMD_R3XTRA_ENTRIES; + pring->sli.sli3.numRiocb += + SLI2_IOCB_RSP_R3XTRA_ENTRIES; + pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ? + SLI3_IOCB_CMD_SIZE : + SLI2_IOCB_CMD_SIZE; + pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ? + SLI3_IOCB_RSP_SIZE : + SLI2_IOCB_RSP_SIZE; + pring->iotag_ctr = 0; + pring->iotag_max = + (phba->cfg_hba_queue_depth * 2); + pring->fast_iotag = pring->iotag_max; + pring->num_mask = 0; + break; + case LPFC_EXTRA_RING: /* ring 1 - EXTRA */ + /* numCiocb and numRiocb are used in config_port */ + pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R1_ENTRIES; + pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R1_ENTRIES; + pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ? + SLI3_IOCB_CMD_SIZE : + SLI2_IOCB_CMD_SIZE; + pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ? + SLI3_IOCB_RSP_SIZE : + SLI2_IOCB_RSP_SIZE; + pring->iotag_max = phba->cfg_hba_queue_depth; + pring->num_mask = 0; + break; + case LPFC_ELS_RING: /* ring 2 - ELS / CT */ + /* numCiocb and numRiocb are used in config_port */ + pring->sli.sli3.numCiocb = SLI2_IOCB_CMD_R2_ENTRIES; + pring->sli.sli3.numRiocb = SLI2_IOCB_RSP_R2_ENTRIES; + pring->sli.sli3.sizeCiocb = (phba->sli_rev == 3) ? + SLI3_IOCB_CMD_SIZE : + SLI2_IOCB_CMD_SIZE; + pring->sli.sli3.sizeRiocb = (phba->sli_rev == 3) ? + SLI3_IOCB_RSP_SIZE : + SLI2_IOCB_RSP_SIZE; + pring->fast_iotag = 0; + pring->iotag_ctr = 0; + pring->iotag_max = 4096; + pring->lpfc_sli_rcv_async_status = + lpfc_sli_async_event_handler; + pring->num_mask = LPFC_MAX_RING_MASK; + pring->prt[0].profile = 0; /* Mask 0 */ + pring->prt[0].rctl = FC_RCTL_ELS_REQ; + pring->prt[0].type = FC_TYPE_ELS; + pring->prt[0].lpfc_sli_rcv_unsol_event = + lpfc_els_unsol_event; + pring->prt[1].profile = 0; /* Mask 1 */ + pring->prt[1].rctl = FC_RCTL_ELS_REP; + pring->prt[1].type = FC_TYPE_ELS; + pring->prt[1].lpfc_sli_rcv_unsol_event = + lpfc_els_unsol_event; + pring->prt[2].profile = 0; /* Mask 2 */ + /* NameServer Inquiry */ + pring->prt[2].rctl = FC_RCTL_DD_UNSOL_CTL; + /* NameServer */ + pring->prt[2].type = FC_TYPE_CT; + pring->prt[2].lpfc_sli_rcv_unsol_event = + lpfc_ct_unsol_event; + pring->prt[3].profile = 0; /* Mask 3 */ + /* NameServer response */ + pring->prt[3].rctl = FC_RCTL_DD_SOL_CTL; + /* NameServer */ + pring->prt[3].type = FC_TYPE_CT; + pring->prt[3].lpfc_sli_rcv_unsol_event = + lpfc_ct_unsol_event; + break; + } + totiocbsize += (pring->sli.sli3.numCiocb * + pring->sli.sli3.sizeCiocb) + + (pring->sli.sli3.numRiocb * pring->sli.sli3.sizeRiocb); + } + if (totiocbsize > MAX_SLIM_IOCB_SIZE) { + /* Too many cmd / rsp ring entries in SLI2 SLIM */ + printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in " + "SLI2 SLIM Data: x%x x%lx\n", + phba->brd_no, totiocbsize, + (unsigned long) MAX_SLIM_IOCB_SIZE); + } + if (phba->cfg_multi_ring_support == 2) + lpfc_extra_ring_setup(phba); + + return 0; +} + +/** + * lpfc_sli_queue_setup - Queue initialization function + * @phba: Pointer to HBA context object. + * + * lpfc_sli_queue_setup sets up mailbox queues and iocb queues for each + * ring. This function also initializes ring indices of each ring. + * This function is called during the initialization of the SLI + * interface of an HBA. + * This function is called with no lock held and always returns + * 1. + **/ +int +lpfc_sli_queue_setup(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli; + struct lpfc_sli_ring *pring; + int i; + + psli = &phba->sli; + spin_lock_irq(&phba->hbalock); + INIT_LIST_HEAD(&psli->mboxq); + INIT_LIST_HEAD(&psli->mboxq_cmpl); + /* Initialize list headers for txq and txcmplq as double linked lists */ + for (i = 0; i < psli->num_rings; i++) { + pring = &psli->ring[i]; + pring->ringno = i; + pring->sli.sli3.next_cmdidx = 0; + pring->sli.sli3.local_getidx = 0; + pring->sli.sli3.cmdidx = 0; + pring->flag = 0; + INIT_LIST_HEAD(&pring->txq); + INIT_LIST_HEAD(&pring->txcmplq); + INIT_LIST_HEAD(&pring->iocb_continueq); + INIT_LIST_HEAD(&pring->iocb_continue_saveq); + INIT_LIST_HEAD(&pring->postbufq); + spin_lock_init(&pring->ring_lock); + } + spin_unlock_irq(&phba->hbalock); + return 1; +} + +/** + * lpfc_sli_mbox_sys_flush - Flush mailbox command sub-system + * @phba: Pointer to HBA context object. + * + * This routine flushes the mailbox command subsystem. It will unconditionally + * flush all the mailbox commands in the three possible stages in the mailbox + * command sub-system: pending mailbox command queue; the outstanding mailbox + * command; and completed mailbox command queue. It is caller's responsibility + * to make sure that the driver is in the proper state to flush the mailbox + * command sub-system. Namely, the posting of mailbox commands into the + * pending mailbox command queue from the various clients must be stopped; + * either the HBA is in a state that it will never works on the outstanding + * mailbox command (such as in EEH or ERATT conditions) or the outstanding + * mailbox command has been completed. + **/ +static void +lpfc_sli_mbox_sys_flush(struct lpfc_hba *phba) +{ + LIST_HEAD(completions); + struct lpfc_sli *psli = &phba->sli; + LPFC_MBOXQ_t *pmb; + unsigned long iflag; + + /* Flush all the mailbox commands in the mbox system */ + spin_lock_irqsave(&phba->hbalock, iflag); + /* The pending mailbox command queue */ + list_splice_init(&phba->sli.mboxq, &completions); + /* The outstanding active mailbox command */ + if (psli->mbox_active) { + list_add_tail(&psli->mbox_active->list, &completions); + psli->mbox_active = NULL; + psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + } + /* The completed mailbox command queue */ + list_splice_init(&phba->sli.mboxq_cmpl, &completions); + spin_unlock_irqrestore(&phba->hbalock, iflag); + + /* Return all flushed mailbox commands with MBX_NOT_FINISHED status */ + while (!list_empty(&completions)) { + list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list); + pmb->u.mb.mbxStatus = MBX_NOT_FINISHED; + if (pmb->mbox_cmpl) + pmb->mbox_cmpl(phba, pmb); + } +} + +/** + * lpfc_sli_host_down - Vport cleanup function + * @vport: Pointer to virtual port object. + * + * lpfc_sli_host_down is called to clean up the resources + * associated with a vport before destroying virtual + * port data structures. + * This function does following operations: + * - Free discovery resources associated with this virtual + * port. + * - Free iocbs associated with this virtual port in + * the txq. + * - Send abort for all iocb commands associated with this + * vport in txcmplq. + * + * This function is called with no lock held and always returns 1. + **/ +int +lpfc_sli_host_down(struct lpfc_vport *vport) +{ + LIST_HEAD(completions); + struct lpfc_hba *phba = vport->phba; + struct lpfc_sli *psli = &phba->sli; + struct lpfc_sli_ring *pring; + struct lpfc_iocbq *iocb, *next_iocb; + int i; + unsigned long flags = 0; + uint16_t prev_pring_flag; + + lpfc_cleanup_discovery_resources(vport); + + spin_lock_irqsave(&phba->hbalock, flags); + for (i = 0; i < psli->num_rings; i++) { + pring = &psli->ring[i]; + prev_pring_flag = pring->flag; + /* Only slow rings */ + if (pring->ringno == LPFC_ELS_RING) { + pring->flag |= LPFC_DEFERRED_RING_EVENT; + /* Set the lpfc data pending flag */ + set_bit(LPFC_DATA_READY, &phba->data_flags); + } + /* + * Error everything on the txq since these iocbs have not been + * given to the FW yet. + */ + list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { + if (iocb->vport != vport) + continue; + list_move_tail(&iocb->list, &completions); + } + + /* Next issue ABTS for everything on the txcmplq */ + list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, + list) { + if (iocb->vport != vport) + continue; + lpfc_sli_issue_abort_iotag(phba, pring, iocb); + } + + pring->flag = prev_pring_flag; + } + + spin_unlock_irqrestore(&phba->hbalock, flags); + + /* Cancel all the IOCBs from the completions list */ + lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, + IOERR_SLI_DOWN); + return 1; +} + +/** + * lpfc_sli_hba_down - Resource cleanup function for the HBA + * @phba: Pointer to HBA context object. + * + * This function cleans up all iocb, buffers, mailbox commands + * while shutting down the HBA. This function is called with no + * lock held and always returns 1. + * This function does the following to cleanup driver resources: + * - Free discovery resources for each virtual port + * - Cleanup any pending fabric iocbs + * - Iterate through the iocb txq and free each entry + * in the list. + * - Free up any buffer posted to the HBA + * - Free mailbox commands in the mailbox queue. + **/ +int +lpfc_sli_hba_down(struct lpfc_hba *phba) +{ + LIST_HEAD(completions); + struct lpfc_sli *psli = &phba->sli; + struct lpfc_sli_ring *pring; + struct lpfc_dmabuf *buf_ptr; + unsigned long flags = 0; + int i; + + /* Shutdown the mailbox command sub-system */ + lpfc_sli_mbox_sys_shutdown(phba, LPFC_MBX_WAIT); + + lpfc_hba_down_prep(phba); + + lpfc_fabric_abort_hba(phba); + + spin_lock_irqsave(&phba->hbalock, flags); + for (i = 0; i < psli->num_rings; i++) { + pring = &psli->ring[i]; + /* Only slow rings */ + if (pring->ringno == LPFC_ELS_RING) { + pring->flag |= LPFC_DEFERRED_RING_EVENT; + /* Set the lpfc data pending flag */ + set_bit(LPFC_DATA_READY, &phba->data_flags); + } + + /* + * Error everything on the txq since these iocbs have not been + * given to the FW yet. + */ + list_splice_init(&pring->txq, &completions); + } + spin_unlock_irqrestore(&phba->hbalock, flags); + + /* Cancel all the IOCBs from the completions list */ + lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, + IOERR_SLI_DOWN); + + spin_lock_irqsave(&phba->hbalock, flags); + list_splice_init(&phba->elsbuf, &completions); + phba->elsbuf_cnt = 0; + phba->elsbuf_prev_cnt = 0; + spin_unlock_irqrestore(&phba->hbalock, flags); + + while (!list_empty(&completions)) { + list_remove_head(&completions, buf_ptr, + struct lpfc_dmabuf, list); + lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); + kfree(buf_ptr); + } + + /* Return any active mbox cmds */ + del_timer_sync(&psli->mbox_tmo); + + spin_lock_irqsave(&phba->pport->work_port_lock, flags); + phba->pport->work_port_events &= ~WORKER_MBOX_TMO; + spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); + + return 1; +} + +/** + * lpfc_sli_pcimem_bcopy - SLI memory copy function + * @srcp: Source memory pointer. + * @destp: Destination memory pointer. + * @cnt: Number of words required to be copied. + * + * This function is used for copying data between driver memory + * and the SLI memory. This function also changes the endianness + * of each word if native endianness is different from SLI + * endianness. This function can be called with or without + * lock. + **/ +void +lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt) +{ + uint32_t *src = srcp; + uint32_t *dest = destp; + uint32_t ldata; + int i; + + for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) { + ldata = *src; + ldata = le32_to_cpu(ldata); + *dest = ldata; + src++; + dest++; + } +} + + +/** + * lpfc_sli_bemem_bcopy - SLI memory copy function + * @srcp: Source memory pointer. + * @destp: Destination memory pointer. + * @cnt: Number of words required to be copied. + * + * This function is used for copying data between a data structure + * with big endian representation to local endianness. + * This function can be called with or without lock. + **/ +void +lpfc_sli_bemem_bcopy(void *srcp, void *destp, uint32_t cnt) +{ + uint32_t *src = srcp; + uint32_t *dest = destp; + uint32_t ldata; + int i; + + for (i = 0; i < (int)cnt; i += sizeof(uint32_t)) { + ldata = *src; + ldata = be32_to_cpu(ldata); + *dest = ldata; + src++; + dest++; + } +} + +/** + * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @mp: Pointer to driver buffer object. + * + * This function is called with no lock held. + * It always return zero after adding the buffer to the postbufq + * buffer list. + **/ +int +lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_dmabuf *mp) +{ + /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up + later */ + spin_lock_irq(&phba->hbalock); + list_add_tail(&mp->list, &pring->postbufq); + pring->postbufq_cnt++; + spin_unlock_irq(&phba->hbalock); + return 0; +} + +/** + * lpfc_sli_get_buffer_tag - allocates a tag for a CMD_QUE_XRI64_CX buffer + * @phba: Pointer to HBA context object. + * + * When HBQ is enabled, buffers are searched based on tags. This function + * allocates a tag for buffer posted using CMD_QUE_XRI64_CX iocb. The + * tag is bit wise or-ed with QUE_BUFTAG_BIT to make sure that the tag + * does not conflict with tags of buffer posted for unsolicited events. + * The function returns the allocated tag. The function is called with + * no locks held. + **/ +uint32_t +lpfc_sli_get_buffer_tag(struct lpfc_hba *phba) +{ + spin_lock_irq(&phba->hbalock); + phba->buffer_tag_count++; + /* + * Always set the QUE_BUFTAG_BIT to distiguish between + * a tag assigned by HBQ. + */ + phba->buffer_tag_count |= QUE_BUFTAG_BIT; + spin_unlock_irq(&phba->hbalock); + return phba->buffer_tag_count; +} + +/** + * lpfc_sli_ring_taggedbuf_get - find HBQ buffer associated with given tag + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @tag: Buffer tag. + * + * Buffers posted using CMD_QUE_XRI64_CX iocb are in pring->postbufq + * list. After HBA DMA data to these buffers, CMD_IOCB_RET_XRI64_CX + * iocb is posted to the response ring with the tag of the buffer. + * This function searches the pring->postbufq list using the tag + * to find buffer associated with CMD_IOCB_RET_XRI64_CX + * iocb. If the buffer is found then lpfc_dmabuf object of the + * buffer is returned to the caller else NULL is returned. + * This function is called with no lock held. + **/ +struct lpfc_dmabuf * +lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + uint32_t tag) +{ + struct lpfc_dmabuf *mp, *next_mp; + struct list_head *slp = &pring->postbufq; + + /* Search postbufq, from the beginning, looking for a match on tag */ + spin_lock_irq(&phba->hbalock); + list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { + if (mp->buffer_tag == tag) { + list_del_init(&mp->list); + pring->postbufq_cnt--; + spin_unlock_irq(&phba->hbalock); + return mp; + } + } + + spin_unlock_irq(&phba->hbalock); + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0402 Cannot find virtual addr for buffer tag on " + "ring %d Data x%lx x%p x%p x%x\n", + pring->ringno, (unsigned long) tag, + slp->next, slp->prev, pring->postbufq_cnt); + + return NULL; +} + +/** + * lpfc_sli_ringpostbuf_get - search buffers for unsolicited CT and ELS events + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @phys: DMA address of the buffer. + * + * This function searches the buffer list using the dma_address + * of unsolicited event to find the driver's lpfc_dmabuf object + * corresponding to the dma_address. The function returns the + * lpfc_dmabuf object if a buffer is found else it returns NULL. + * This function is called by the ct and els unsolicited event + * handlers to get the buffer associated with the unsolicited + * event. + * + * This function is called with no lock held. + **/ +struct lpfc_dmabuf * +lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + dma_addr_t phys) +{ + struct lpfc_dmabuf *mp, *next_mp; + struct list_head *slp = &pring->postbufq; + + /* Search postbufq, from the beginning, looking for a match on phys */ + spin_lock_irq(&phba->hbalock); + list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { + if (mp->phys == phys) { + list_del_init(&mp->list); + pring->postbufq_cnt--; + spin_unlock_irq(&phba->hbalock); + return mp; + } + } + + spin_unlock_irq(&phba->hbalock); + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0410 Cannot find virtual addr for mapped buf on " + "ring %d Data x%llx x%p x%p x%x\n", + pring->ringno, (unsigned long long)phys, + slp->next, slp->prev, pring->postbufq_cnt); + return NULL; +} + +/** + * lpfc_sli_abort_els_cmpl - Completion handler for the els abort iocbs + * @phba: Pointer to HBA context object. + * @cmdiocb: Pointer to driver command iocb object. + * @rspiocb: Pointer to driver response iocb object. + * + * This function is the completion handler for the abort iocbs for + * ELS commands. This function is called from the ELS ring event + * handler with no lock held. This function frees memory resources + * associated with the abort iocb. + **/ +static void +lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + IOCB_t *irsp = &rspiocb->iocb; + uint16_t abort_iotag, abort_context; + struct lpfc_iocbq *abort_iocb = NULL; + + if (irsp->ulpStatus) { + + /* + * Assume that the port already completed and returned, or + * will return the iocb. Just Log the message. + */ + abort_context = cmdiocb->iocb.un.acxri.abortContextTag; + abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag; + + spin_lock_irq(&phba->hbalock); + if (phba->sli_rev < LPFC_SLI_REV4) { + if (abort_iotag != 0 && + abort_iotag <= phba->sli.last_iotag) + abort_iocb = + phba->sli.iocbq_lookup[abort_iotag]; + } else + /* For sli4 the abort_tag is the XRI, + * so the abort routine puts the iotag of the iocb + * being aborted in the context field of the abort + * IOCB. + */ + abort_iocb = phba->sli.iocbq_lookup[abort_context]; + + lpfc_printf_log(phba, KERN_WARNING, LOG_ELS | LOG_SLI, + "0327 Cannot abort els iocb %p " + "with tag %x context %x, abort status %x, " + "abort code %x\n", + abort_iocb, abort_iotag, abort_context, + irsp->ulpStatus, irsp->un.ulpWord[4]); + + spin_unlock_irq(&phba->hbalock); + } + lpfc_sli_release_iocbq(phba, cmdiocb); + return; +} + +/** + * lpfc_ignore_els_cmpl - Completion handler for aborted ELS command + * @phba: Pointer to HBA context object. + * @cmdiocb: Pointer to driver command iocb object. + * @rspiocb: Pointer to driver response iocb object. + * + * The function is called from SLI ring event handler with no + * lock held. This function is the completion handler for ELS commands + * which are aborted. The function frees memory resources used for + * the aborted ELS commands. + **/ +static void +lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + IOCB_t *irsp = &rspiocb->iocb; + + /* ELS cmd tag <ulpIoTag> completes */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "0139 Ignoring ELS cmd tag x%x completion Data: " + "x%x x%x x%x\n", + irsp->ulpIoTag, irsp->ulpStatus, + irsp->un.ulpWord[4], irsp->ulpTimeout); + if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR) + lpfc_ct_free_iocb(phba, cmdiocb); + else + lpfc_els_free_iocb(phba, cmdiocb); + return; +} + +/** + * lpfc_sli_abort_iotag_issue - Issue abort for a command iocb + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @cmdiocb: Pointer to driver command iocb object. + * + * This function issues an abort iocb for the provided command iocb down to + * the port. Other than the case the outstanding command iocb is an abort + * request, this function issues abort out unconditionally. This function is + * called with hbalock held. The function returns 0 when it fails due to + * memory allocation failure or when the command iocb is an abort request. + **/ +static int +lpfc_sli_abort_iotag_issue(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *cmdiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + struct lpfc_iocbq *abtsiocbp; + IOCB_t *icmd = NULL; + IOCB_t *iabt = NULL; + int ring_number; + int retval; + unsigned long iflags; + + /* + * There are certain command types we don't want to abort. And we + * don't want to abort commands that are already in the process of + * being aborted. + */ + icmd = &cmdiocb->iocb; + if (icmd->ulpCommand == CMD_ABORT_XRI_CN || + icmd->ulpCommand == CMD_CLOSE_XRI_CN || + (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0) + return 0; + + /* issue ABTS for this IOCB based on iotag */ + abtsiocbp = __lpfc_sli_get_iocbq(phba); + if (abtsiocbp == NULL) + return 0; + + /* This signals the response to set the correct status + * before calling the completion handler + */ + cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED; + + iabt = &abtsiocbp->iocb; + iabt->un.acxri.abortType = ABORT_TYPE_ABTS; + iabt->un.acxri.abortContextTag = icmd->ulpContext; + if (phba->sli_rev == LPFC_SLI_REV4) { + iabt->un.acxri.abortIoTag = cmdiocb->sli4_xritag; + iabt->un.acxri.abortContextTag = cmdiocb->iotag; + } + else + iabt->un.acxri.abortIoTag = icmd->ulpIoTag; + iabt->ulpLe = 1; + iabt->ulpClass = icmd->ulpClass; + + /* ABTS WQE must go to the same WQ as the WQE to be aborted */ + abtsiocbp->fcp_wqidx = cmdiocb->fcp_wqidx; + if (cmdiocb->iocb_flag & LPFC_IO_FCP) + abtsiocbp->iocb_flag |= LPFC_USE_FCPWQIDX; + if (cmdiocb->iocb_flag & LPFC_IO_FOF) + abtsiocbp->iocb_flag |= LPFC_IO_FOF; + + if (phba->link_state >= LPFC_LINK_UP) + iabt->ulpCommand = CMD_ABORT_XRI_CN; + else + iabt->ulpCommand = CMD_CLOSE_XRI_CN; + + abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl; + + lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI, + "0339 Abort xri x%x, original iotag x%x, " + "abort cmd iotag x%x\n", + iabt->un.acxri.abortIoTag, + iabt->un.acxri.abortContextTag, + abtsiocbp->iotag); + + if (phba->sli_rev == LPFC_SLI_REV4) { + ring_number = + lpfc_sli_calc_ring(phba, pring->ringno, abtsiocbp); + if (unlikely(ring_number == LPFC_HBA_ERROR)) + return 0; + pring = &phba->sli.ring[ring_number]; + /* Note: both hbalock and ring_lock need to be set here */ + spin_lock_irqsave(&pring->ring_lock, iflags); + retval = __lpfc_sli_issue_iocb(phba, pring->ringno, + abtsiocbp, 0); + spin_unlock_irqrestore(&pring->ring_lock, iflags); + } else { + retval = __lpfc_sli_issue_iocb(phba, pring->ringno, + abtsiocbp, 0); + } + + if (retval) + __lpfc_sli_release_iocbq(phba, abtsiocbp); + + /* + * Caller to this routine should check for IOCB_ERROR + * and handle it properly. This routine no longer removes + * iocb off txcmplq and call compl in case of IOCB_ERROR. + */ + return retval; +} + +/** + * lpfc_sli_issue_abort_iotag - Abort function for a command iocb + * @phba: Pointer to HBA context object. + * @pring: Pointer to driver SLI ring object. + * @cmdiocb: Pointer to driver command iocb object. + * + * This function issues an abort iocb for the provided command iocb. In case + * of unloading, the abort iocb will not be issued to commands on the ELS + * ring. Instead, the callback function shall be changed to those commands + * so that nothing happens when them finishes. This function is called with + * hbalock held. The function returns 0 when the command iocb is an abort + * request. + **/ +int +lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + struct lpfc_iocbq *cmdiocb) +{ + struct lpfc_vport *vport = cmdiocb->vport; + int retval = IOCB_ERROR; + IOCB_t *icmd = NULL; + + /* + * There are certain command types we don't want to abort. And we + * don't want to abort commands that are already in the process of + * being aborted. + */ + icmd = &cmdiocb->iocb; + if (icmd->ulpCommand == CMD_ABORT_XRI_CN || + icmd->ulpCommand == CMD_CLOSE_XRI_CN || + (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0) + return 0; + + /* + * If we're unloading, don't abort iocb on the ELS ring, but change + * the callback so that nothing happens when it finishes. + */ + if ((vport->load_flag & FC_UNLOADING) && + (pring->ringno == LPFC_ELS_RING)) { + if (cmdiocb->iocb_flag & LPFC_IO_FABRIC) + cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl; + else + cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl; + goto abort_iotag_exit; + } + + /* Now, we try to issue the abort to the cmdiocb out */ + retval = lpfc_sli_abort_iotag_issue(phba, pring, cmdiocb); + +abort_iotag_exit: + /* + * Caller to this routine should check for IOCB_ERROR + * and handle it properly. This routine no longer removes + * iocb off txcmplq and call compl in case of IOCB_ERROR. + */ + return retval; +} + +/** + * lpfc_sli_hba_iocb_abort - Abort all iocbs to an hba. + * @phba: pointer to lpfc HBA data structure. + * + * This routine will abort all pending and outstanding iocbs to an HBA. + **/ +void +lpfc_sli_hba_iocb_abort(struct lpfc_hba *phba) +{ + struct lpfc_sli *psli = &phba->sli; + struct lpfc_sli_ring *pring; + int i; + + for (i = 0; i < psli->num_rings; i++) { + pring = &psli->ring[i]; + lpfc_sli_abort_iocb_ring(phba, pring); + } +} + +/** + * lpfc_sli_validate_fcp_iocb - find commands associated with a vport or LUN + * @iocbq: Pointer to driver iocb object. + * @vport: Pointer to driver virtual port object. + * @tgt_id: SCSI ID of the target. + * @lun_id: LUN ID of the scsi device. + * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST + * + * This function acts as an iocb filter for functions which abort or count + * all FCP iocbs pending on a lun/SCSI target/SCSI host. It will return + * 0 if the filtering criteria is met for the given iocb and will return + * 1 if the filtering criteria is not met. + * If ctx_cmd == LPFC_CTX_LUN, the function returns 0 only if the + * given iocb is for the SCSI device specified by vport, tgt_id and + * lun_id parameter. + * If ctx_cmd == LPFC_CTX_TGT, the function returns 0 only if the + * given iocb is for the SCSI target specified by vport and tgt_id + * parameters. + * If ctx_cmd == LPFC_CTX_HOST, the function returns 0 only if the + * given iocb is for the SCSI host associated with the given vport. + * This function is called with no locks held. + **/ +static int +lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport, + uint16_t tgt_id, uint64_t lun_id, + lpfc_ctx_cmd ctx_cmd) +{ + struct lpfc_scsi_buf *lpfc_cmd; + int rc = 1; + + if (!(iocbq->iocb_flag & LPFC_IO_FCP)) + return rc; + + if (iocbq->vport != vport) + return rc; + + lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); + + if (lpfc_cmd->pCmd == NULL) + return rc; + + switch (ctx_cmd) { + case LPFC_CTX_LUN: + if ((lpfc_cmd->rdata->pnode) && + (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) && + (scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id)) + rc = 0; + break; + case LPFC_CTX_TGT: + if ((lpfc_cmd->rdata->pnode) && + (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id)) + rc = 0; + break; + case LPFC_CTX_HOST: + rc = 0; + break; + default: + printk(KERN_ERR "%s: Unknown context cmd type, value %d\n", + __func__, ctx_cmd); + break; + } + + return rc; +} + +/** + * lpfc_sli_sum_iocb - Function to count the number of FCP iocbs pending + * @vport: Pointer to virtual port. + * @tgt_id: SCSI ID of the target. + * @lun_id: LUN ID of the scsi device. + * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST. + * + * This function returns number of FCP commands pending for the vport. + * When ctx_cmd == LPFC_CTX_LUN, the function returns number of FCP + * commands pending on the vport associated with SCSI device specified + * by tgt_id and lun_id parameters. + * When ctx_cmd == LPFC_CTX_TGT, the function returns number of FCP + * commands pending on the vport associated with SCSI target specified + * by tgt_id parameter. + * When ctx_cmd == LPFC_CTX_HOST, the function returns number of FCP + * commands pending on the vport. + * This function returns the number of iocbs which satisfy the filter. + * This function is called without any lock held. + **/ +int +lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id, + lpfc_ctx_cmd ctx_cmd) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *iocbq; + int sum, i; + + for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) { + iocbq = phba->sli.iocbq_lookup[i]; + + if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id, + ctx_cmd) == 0) + sum++; + } + + return sum; +} + +/** + * lpfc_sli_abort_fcp_cmpl - Completion handler function for aborted FCP IOCBs + * @phba: Pointer to HBA context object + * @cmdiocb: Pointer to command iocb object. + * @rspiocb: Pointer to response iocb object. + * + * This function is called when an aborted FCP iocb completes. This + * function is called by the ring event handler with no lock held. + * This function frees the iocb. + **/ +void +lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, + struct lpfc_iocbq *rspiocb) +{ + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "3096 ABORT_XRI_CN completing on rpi x%x " + "original iotag x%x, abort cmd iotag x%x " + "status 0x%x, reason 0x%x\n", + cmdiocb->iocb.un.acxri.abortContextTag, + cmdiocb->iocb.un.acxri.abortIoTag, + cmdiocb->iotag, rspiocb->iocb.ulpStatus, + rspiocb->iocb.un.ulpWord[4]); + lpfc_sli_release_iocbq(phba, cmdiocb); + return; +} + +/** + * lpfc_sli_abort_iocb - issue abort for all commands on a host/target/LUN + * @vport: Pointer to virtual port. + * @pring: Pointer to driver SLI ring object. + * @tgt_id: SCSI ID of the target. + * @lun_id: LUN ID of the scsi device. + * @abort_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST. + * + * This function sends an abort command for every SCSI command + * associated with the given virtual port pending on the ring + * filtered by lpfc_sli_validate_fcp_iocb function. + * When abort_cmd == LPFC_CTX_LUN, the function sends abort only to the + * FCP iocbs associated with lun specified by tgt_id and lun_id + * parameters + * When abort_cmd == LPFC_CTX_TGT, the function sends abort only to the + * FCP iocbs associated with SCSI target specified by tgt_id parameter. + * When abort_cmd == LPFC_CTX_HOST, the function sends abort to all + * FCP iocbs associated with virtual port. + * This function returns number of iocbs it failed to abort. + * This function is called with no locks held. + **/ +int +lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring, + uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *iocbq; + struct lpfc_iocbq *abtsiocb; + IOCB_t *cmd = NULL; + int errcnt = 0, ret_val = 0; + int i; + + for (i = 1; i <= phba->sli.last_iotag; i++) { + iocbq = phba->sli.iocbq_lookup[i]; + + if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id, + abort_cmd) != 0) + continue; + + /* + * If the iocbq is already being aborted, don't take a second + * action, but do count it. + */ + if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED) + continue; + + /* issue ABTS for this IOCB based on iotag */ + abtsiocb = lpfc_sli_get_iocbq(phba); + if (abtsiocb == NULL) { + errcnt++; + continue; + } + + /* indicate the IO is being aborted by the driver. */ + iocbq->iocb_flag |= LPFC_DRIVER_ABORTED; + + cmd = &iocbq->iocb; + abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS; + abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext; + if (phba->sli_rev == LPFC_SLI_REV4) + abtsiocb->iocb.un.acxri.abortIoTag = iocbq->sli4_xritag; + else + abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag; + abtsiocb->iocb.ulpLe = 1; + abtsiocb->iocb.ulpClass = cmd->ulpClass; + abtsiocb->vport = vport; + + /* ABTS WQE must go to the same WQ as the WQE to be aborted */ + abtsiocb->fcp_wqidx = iocbq->fcp_wqidx; + if (iocbq->iocb_flag & LPFC_IO_FCP) + abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; + if (iocbq->iocb_flag & LPFC_IO_FOF) + abtsiocb->iocb_flag |= LPFC_IO_FOF; + + if (lpfc_is_link_up(phba)) + abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN; + else + abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN; + + /* Setup callback routine and issue the command. */ + abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; + ret_val = lpfc_sli_issue_iocb(phba, pring->ringno, + abtsiocb, 0); + if (ret_val == IOCB_ERROR) { + lpfc_sli_release_iocbq(phba, abtsiocb); + errcnt++; + continue; + } + } + + return errcnt; +} + +/** + * lpfc_sli_abort_taskmgmt - issue abort for all commands on a host/target/LUN + * @vport: Pointer to virtual port. + * @pring: Pointer to driver SLI ring object. + * @tgt_id: SCSI ID of the target. + * @lun_id: LUN ID of the scsi device. + * @taskmgmt_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST. + * + * This function sends an abort command for every SCSI command + * associated with the given virtual port pending on the ring + * filtered by lpfc_sli_validate_fcp_iocb function. + * When taskmgmt_cmd == LPFC_CTX_LUN, the function sends abort only to the + * FCP iocbs associated with lun specified by tgt_id and lun_id + * parameters + * When taskmgmt_cmd == LPFC_CTX_TGT, the function sends abort only to the + * FCP iocbs associated with SCSI target specified by tgt_id parameter. + * When taskmgmt_cmd == LPFC_CTX_HOST, the function sends abort to all + * FCP iocbs associated with virtual port. + * This function returns number of iocbs it aborted . + * This function is called with no locks held right after a taskmgmt + * command is sent. + **/ +int +lpfc_sli_abort_taskmgmt(struct lpfc_vport *vport, struct lpfc_sli_ring *pring, + uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd cmd) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_scsi_buf *lpfc_cmd; + struct lpfc_iocbq *abtsiocbq; + struct lpfc_nodelist *ndlp; + struct lpfc_iocbq *iocbq; + IOCB_t *icmd; + int sum, i, ret_val; + unsigned long iflags; + struct lpfc_sli_ring *pring_s4; + uint32_t ring_number; + + spin_lock_irq(&phba->hbalock); + + /* all I/Os are in process of being flushed */ + if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) { + spin_unlock_irq(&phba->hbalock); + return 0; + } + sum = 0; + + for (i = 1; i <= phba->sli.last_iotag; i++) { + iocbq = phba->sli.iocbq_lookup[i]; + + if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id, + cmd) != 0) + continue; + + /* + * If the iocbq is already being aborted, don't take a second + * action, but do count it. + */ + if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED) + continue; + + /* issue ABTS for this IOCB based on iotag */ + abtsiocbq = __lpfc_sli_get_iocbq(phba); + if (abtsiocbq == NULL) + continue; + + icmd = &iocbq->iocb; + abtsiocbq->iocb.un.acxri.abortType = ABORT_TYPE_ABTS; + abtsiocbq->iocb.un.acxri.abortContextTag = icmd->ulpContext; + if (phba->sli_rev == LPFC_SLI_REV4) + abtsiocbq->iocb.un.acxri.abortIoTag = + iocbq->sli4_xritag; + else + abtsiocbq->iocb.un.acxri.abortIoTag = icmd->ulpIoTag; + abtsiocbq->iocb.ulpLe = 1; + abtsiocbq->iocb.ulpClass = icmd->ulpClass; + abtsiocbq->vport = vport; + + /* ABTS WQE must go to the same WQ as the WQE to be aborted */ + abtsiocbq->fcp_wqidx = iocbq->fcp_wqidx; + if (iocbq->iocb_flag & LPFC_IO_FCP) + abtsiocbq->iocb_flag |= LPFC_USE_FCPWQIDX; + if (iocbq->iocb_flag & LPFC_IO_FOF) + abtsiocbq->iocb_flag |= LPFC_IO_FOF; + + lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); + ndlp = lpfc_cmd->rdata->pnode; + + if (lpfc_is_link_up(phba) && + (ndlp && ndlp->nlp_state == NLP_STE_MAPPED_NODE)) + abtsiocbq->iocb.ulpCommand = CMD_ABORT_XRI_CN; + else + abtsiocbq->iocb.ulpCommand = CMD_CLOSE_XRI_CN; + + /* Setup callback routine and issue the command. */ + abtsiocbq->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; + + /* + * Indicate the IO is being aborted by the driver and set + * the caller's flag into the aborted IO. + */ + iocbq->iocb_flag |= LPFC_DRIVER_ABORTED; + + if (phba->sli_rev == LPFC_SLI_REV4) { + ring_number = MAX_SLI3_CONFIGURED_RINGS + + iocbq->fcp_wqidx; + pring_s4 = &phba->sli.ring[ring_number]; + /* Note: both hbalock and ring_lock must be set here */ + spin_lock_irqsave(&pring_s4->ring_lock, iflags); + ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno, + abtsiocbq, 0); + spin_unlock_irqrestore(&pring_s4->ring_lock, iflags); + } else { + ret_val = __lpfc_sli_issue_iocb(phba, pring->ringno, + abtsiocbq, 0); + } + + + if (ret_val == IOCB_ERROR) + __lpfc_sli_release_iocbq(phba, abtsiocbq); + else + sum++; + } + spin_unlock_irq(&phba->hbalock); + return sum; +} + +/** + * lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler + * @phba: Pointer to HBA context object. + * @cmdiocbq: Pointer to command iocb. + * @rspiocbq: Pointer to response iocb. + * + * This function is the completion handler for iocbs issued using + * lpfc_sli_issue_iocb_wait function. This function is called by the + * ring event handler function without any lock held. This function + * can be called from both worker thread context and interrupt + * context. This function also can be called from other thread which + * cleans up the SLI layer objects. + * This function copy the contents of the response iocb to the + * response iocb memory object provided by the caller of + * lpfc_sli_issue_iocb_wait and then wakes up the thread which + * sleeps for the iocb completion. + **/ +static void +lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba, + struct lpfc_iocbq *cmdiocbq, + struct lpfc_iocbq *rspiocbq) +{ + wait_queue_head_t *pdone_q; + unsigned long iflags; + struct lpfc_scsi_buf *lpfc_cmd; + + spin_lock_irqsave(&phba->hbalock, iflags); + if (cmdiocbq->iocb_flag & LPFC_IO_WAKE_TMO) { + + /* + * A time out has occurred for the iocb. If a time out + * completion handler has been supplied, call it. Otherwise, + * just free the iocbq. + */ + + spin_unlock_irqrestore(&phba->hbalock, iflags); + cmdiocbq->iocb_cmpl = cmdiocbq->wait_iocb_cmpl; + cmdiocbq->wait_iocb_cmpl = NULL; + if (cmdiocbq->iocb_cmpl) + (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, NULL); + else + lpfc_sli_release_iocbq(phba, cmdiocbq); + return; + } + + cmdiocbq->iocb_flag |= LPFC_IO_WAKE; + if (cmdiocbq->context2 && rspiocbq) + memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb, + &rspiocbq->iocb, sizeof(IOCB_t)); + + /* Set the exchange busy flag for task management commands */ + if ((cmdiocbq->iocb_flag & LPFC_IO_FCP) && + !(cmdiocbq->iocb_flag & LPFC_IO_LIBDFC)) { + lpfc_cmd = container_of(cmdiocbq, struct lpfc_scsi_buf, + cur_iocbq); + lpfc_cmd->exch_busy = rspiocbq->iocb_flag & LPFC_EXCHANGE_BUSY; + } + + pdone_q = cmdiocbq->context_un.wait_queue; + if (pdone_q) + wake_up(pdone_q); + spin_unlock_irqrestore(&phba->hbalock, iflags); + return; +} + +/** + * lpfc_chk_iocb_flg - Test IOCB flag with lock held. + * @phba: Pointer to HBA context object.. + * @piocbq: Pointer to command iocb. + * @flag: Flag to test. + * + * This routine grabs the hbalock and then test the iocb_flag to + * see if the passed in flag is set. + * Returns: + * 1 if flag is set. + * 0 if flag is not set. + **/ +static int +lpfc_chk_iocb_flg(struct lpfc_hba *phba, + struct lpfc_iocbq *piocbq, uint32_t flag) +{ + unsigned long iflags; + int ret; + + spin_lock_irqsave(&phba->hbalock, iflags); + ret = piocbq->iocb_flag & flag; + spin_unlock_irqrestore(&phba->hbalock, iflags); + return ret; + +} + +/** + * lpfc_sli_issue_iocb_wait - Synchronous function to issue iocb commands + * @phba: Pointer to HBA context object.. + * @pring: Pointer to sli ring. + * @piocb: Pointer to command iocb. + * @prspiocbq: Pointer to response iocb. + * @timeout: Timeout in number of seconds. + * + * This function issues the iocb to firmware and waits for the + * iocb to complete. The iocb_cmpl field of the shall be used + * to handle iocbs which time out. If the field is NULL, the + * function shall free the iocbq structure. If more clean up is + * needed, the caller is expected to provide a completion function + * that will provide the needed clean up. If the iocb command is + * not completed within timeout seconds, the function will either + * free the iocbq structure (if iocb_cmpl == NULL) or execute the + * completion function set in the iocb_cmpl field and then return + * a status of IOCB_TIMEDOUT. The caller should not free the iocb + * resources if this function returns IOCB_TIMEDOUT. + * The function waits for the iocb completion using an + * non-interruptible wait. + * This function will sleep while waiting for iocb completion. + * So, this function should not be called from any context which + * does not allow sleeping. Due to the same reason, this function + * cannot be called with interrupt disabled. + * This function assumes that the iocb completions occur while + * this function sleep. So, this function cannot be called from + * the thread which process iocb completion for this ring. + * This function clears the iocb_flag of the iocb object before + * issuing the iocb and the iocb completion handler sets this + * flag and wakes this thread when the iocb completes. + * The contents of the response iocb will be copied to prspiocbq + * by the completion handler when the command completes. + * This function returns IOCB_SUCCESS when success. + * This function is called with no lock held. + **/ +int +lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba, + uint32_t ring_number, + struct lpfc_iocbq *piocb, + struct lpfc_iocbq *prspiocbq, + uint32_t timeout) +{ + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q); + long timeleft, timeout_req = 0; + int retval = IOCB_SUCCESS; + uint32_t creg_val; + struct lpfc_iocbq *iocb; + int txq_cnt = 0; + int txcmplq_cnt = 0; + struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; + unsigned long iflags; + bool iocb_completed = true; + + /* + * If the caller has provided a response iocbq buffer, then context2 + * is NULL or its an error. + */ + if (prspiocbq) { + if (piocb->context2) + return IOCB_ERROR; + piocb->context2 = prspiocbq; + } + + piocb->wait_iocb_cmpl = piocb->iocb_cmpl; + piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait; + piocb->context_un.wait_queue = &done_q; + piocb->iocb_flag &= ~(LPFC_IO_WAKE | LPFC_IO_WAKE_TMO); + + if (phba->cfg_poll & DISABLE_FCP_RING_INT) { + if (lpfc_readl(phba->HCregaddr, &creg_val)) + return IOCB_ERROR; + creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); + writel(creg_val, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + } + + retval = lpfc_sli_issue_iocb(phba, ring_number, piocb, + SLI_IOCB_RET_IOCB); + if (retval == IOCB_SUCCESS) { + timeout_req = msecs_to_jiffies(timeout * 1000); + timeleft = wait_event_timeout(done_q, + lpfc_chk_iocb_flg(phba, piocb, LPFC_IO_WAKE), + timeout_req); + spin_lock_irqsave(&phba->hbalock, iflags); + if (!(piocb->iocb_flag & LPFC_IO_WAKE)) { + + /* + * IOCB timed out. Inform the wake iocb wait + * completion function and set local status + */ + + iocb_completed = false; + piocb->iocb_flag |= LPFC_IO_WAKE_TMO; + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + if (iocb_completed) { + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0331 IOCB wake signaled\n"); + /* Note: we are not indicating if the IOCB has a success + * status or not - that's for the caller to check. + * IOCB_SUCCESS means just that the command was sent and + * completed. Not that it completed successfully. + * */ + } else if (timeleft == 0) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0338 IOCB wait timeout error - no " + "wake response Data x%x\n", timeout); + retval = IOCB_TIMEDOUT; + } else { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0330 IOCB wake NOT set, " + "Data x%x x%lx\n", + timeout, (timeleft / jiffies)); + retval = IOCB_TIMEDOUT; + } + } else if (retval == IOCB_BUSY) { + if (phba->cfg_log_verbose & LOG_SLI) { + list_for_each_entry(iocb, &pring->txq, list) { + txq_cnt++; + } + list_for_each_entry(iocb, &pring->txcmplq, list) { + txcmplq_cnt++; + } + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "2818 Max IOCBs %d txq cnt %d txcmplq cnt %d\n", + phba->iocb_cnt, txq_cnt, txcmplq_cnt); + } + return retval; + } else { + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0332 IOCB wait issue failed, Data x%x\n", + retval); + retval = IOCB_ERROR; + } + + if (phba->cfg_poll & DISABLE_FCP_RING_INT) { + if (lpfc_readl(phba->HCregaddr, &creg_val)) + return IOCB_ERROR; + creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING); + writel(creg_val, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + } + + if (prspiocbq) + piocb->context2 = NULL; + + piocb->context_un.wait_queue = NULL; + piocb->iocb_cmpl = NULL; + return retval; +} + +/** + * lpfc_sli_issue_mbox_wait - Synchronous function to issue mailbox + * @phba: Pointer to HBA context object. + * @pmboxq: Pointer to driver mailbox object. + * @timeout: Timeout in number of seconds. + * + * This function issues the mailbox to firmware and waits for the + * mailbox command to complete. If the mailbox command is not + * completed within timeout seconds, it returns MBX_TIMEOUT. + * The function waits for the mailbox completion using an + * interruptible wait. If the thread is woken up due to a + * signal, MBX_TIMEOUT error is returned to the caller. Caller + * should not free the mailbox resources, if this function returns + * MBX_TIMEOUT. + * This function will sleep while waiting for mailbox completion. + * So, this function should not be called from any context which + * does not allow sleeping. Due to the same reason, this function + * cannot be called with interrupt disabled. + * This function assumes that the mailbox completion occurs while + * this function sleep. So, this function cannot be called from + * the worker thread which processes mailbox completion. + * This function is called in the context of HBA management + * applications. + * This function returns MBX_SUCCESS when successful. + * This function is called with no lock held. + **/ +int +lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq, + uint32_t timeout) +{ + DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q); + MAILBOX_t *mb = NULL; + int retval; + unsigned long flag; + + /* The caller might set context1 for extended buffer */ + if (pmboxq->context1) + mb = (MAILBOX_t *)pmboxq->context1; + + pmboxq->mbox_flag &= ~LPFC_MBX_WAKE; + /* setup wake call as IOCB callback */ + pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait; + /* setup context field to pass wait_queue pointer to wake function */ + pmboxq->context1 = &done_q; + + /* now issue the command */ + retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); + if (retval == MBX_BUSY || retval == MBX_SUCCESS) { + wait_event_interruptible_timeout(done_q, + pmboxq->mbox_flag & LPFC_MBX_WAKE, + msecs_to_jiffies(timeout * 1000)); + + spin_lock_irqsave(&phba->hbalock, flag); + /* restore the possible extended buffer for free resource */ + pmboxq->context1 = (uint8_t *)mb; + /* + * if LPFC_MBX_WAKE flag is set the mailbox is completed + * else do not free the resources. + */ + if (pmboxq->mbox_flag & LPFC_MBX_WAKE) { + retval = MBX_SUCCESS; + } else { + retval = MBX_TIMEOUT; + pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + } + spin_unlock_irqrestore(&phba->hbalock, flag); + } else { + /* restore the possible extended buffer for free resource */ + pmboxq->context1 = (uint8_t *)mb; + } + + return retval; +} + +/** + * lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system + * @phba: Pointer to HBA context. + * + * This function is called to shutdown the driver's mailbox sub-system. + * It first marks the mailbox sub-system is in a block state to prevent + * the asynchronous mailbox command from issued off the pending mailbox + * command queue. If the mailbox command sub-system shutdown is due to + * HBA error conditions such as EEH or ERATT, this routine shall invoke + * the mailbox sub-system flush routine to forcefully bring down the + * mailbox sub-system. Otherwise, if it is due to normal condition (such + * as with offline or HBA function reset), this routine will wait for the + * outstanding mailbox command to complete before invoking the mailbox + * sub-system flush routine to gracefully bring down mailbox sub-system. + **/ +void +lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba, int mbx_action) +{ + struct lpfc_sli *psli = &phba->sli; + unsigned long timeout; + + if (mbx_action == LPFC_MBX_NO_WAIT) { + /* delay 100ms for port state */ + msleep(100); + lpfc_sli_mbox_sys_flush(phba); + return; + } + timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies; + + spin_lock_irq(&phba->hbalock); + psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK; + + if (psli->sli_flag & LPFC_SLI_ACTIVE) { + /* Determine how long we might wait for the active mailbox + * command to be gracefully completed by firmware. + */ + if (phba->sli.mbox_active) + timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, + phba->sli.mbox_active) * + 1000) + jiffies; + spin_unlock_irq(&phba->hbalock); + + while (phba->sli.mbox_active) { + /* Check active mailbox complete status every 2ms */ + msleep(2); + if (time_after(jiffies, timeout)) + /* Timeout, let the mailbox flush routine to + * forcefully release active mailbox command + */ + break; + } + } else + spin_unlock_irq(&phba->hbalock); + + lpfc_sli_mbox_sys_flush(phba); +} + +/** + * lpfc_sli_eratt_read - read sli-3 error attention events + * @phba: Pointer to HBA context. + * + * This function is called to read the SLI3 device error attention registers + * for possible error attention events. The caller must hold the hostlock + * with spin_lock_irq(). + * + * This function returns 1 when there is Error Attention in the Host Attention + * Register and returns 0 otherwise. + **/ +static int +lpfc_sli_eratt_read(struct lpfc_hba *phba) +{ + uint32_t ha_copy; + + /* Read chip Host Attention (HA) register */ + if (lpfc_readl(phba->HAregaddr, &ha_copy)) + goto unplug_err; + + if (ha_copy & HA_ERATT) { + /* Read host status register to retrieve error event */ + if (lpfc_sli_read_hs(phba)) + goto unplug_err; + + /* Check if there is a deferred error condition is active */ + if ((HS_FFER1 & phba->work_hs) && + ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 | + HS_FFER6 | HS_FFER7 | HS_FFER8) & phba->work_hs)) { + phba->hba_flag |= DEFER_ERATT; + /* Clear all interrupt enable conditions */ + writel(0, phba->HCregaddr); + readl(phba->HCregaddr); + } + + /* Set the driver HA work bitmap */ + phba->work_ha |= HA_ERATT; + /* Indicate polling handles this ERATT */ + phba->hba_flag |= HBA_ERATT_HANDLED; + return 1; + } + return 0; + +unplug_err: + /* Set the driver HS work bitmap */ + phba->work_hs |= UNPLUG_ERR; + /* Set the driver HA work bitmap */ + phba->work_ha |= HA_ERATT; + /* Indicate polling handles this ERATT */ + phba->hba_flag |= HBA_ERATT_HANDLED; + return 1; +} + +/** + * lpfc_sli4_eratt_read - read sli-4 error attention events + * @phba: Pointer to HBA context. + * + * This function is called to read the SLI4 device error attention registers + * for possible error attention events. The caller must hold the hostlock + * with spin_lock_irq(). + * + * This function returns 1 when there is Error Attention in the Host Attention + * Register and returns 0 otherwise. + **/ +static int +lpfc_sli4_eratt_read(struct lpfc_hba *phba) +{ + uint32_t uerr_sta_hi, uerr_sta_lo; + uint32_t if_type, portsmphr; + struct lpfc_register portstat_reg; + + /* + * For now, use the SLI4 device internal unrecoverable error + * registers for error attention. This can be changed later. + */ + if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf); + switch (if_type) { + case LPFC_SLI_INTF_IF_TYPE_0: + if (lpfc_readl(phba->sli4_hba.u.if_type0.UERRLOregaddr, + &uerr_sta_lo) || + lpfc_readl(phba->sli4_hba.u.if_type0.UERRHIregaddr, + &uerr_sta_hi)) { + phba->work_hs |= UNPLUG_ERR; + phba->work_ha |= HA_ERATT; + phba->hba_flag |= HBA_ERATT_HANDLED; + return 1; + } + if ((~phba->sli4_hba.ue_mask_lo & uerr_sta_lo) || + (~phba->sli4_hba.ue_mask_hi & uerr_sta_hi)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "1423 HBA Unrecoverable error: " + "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, " + "ue_mask_lo_reg=0x%x, " + "ue_mask_hi_reg=0x%x\n", + uerr_sta_lo, uerr_sta_hi, + phba->sli4_hba.ue_mask_lo, + phba->sli4_hba.ue_mask_hi); + phba->work_status[0] = uerr_sta_lo; + phba->work_status[1] = uerr_sta_hi; + phba->work_ha |= HA_ERATT; + phba->hba_flag |= HBA_ERATT_HANDLED; + return 1; + } + break; + case LPFC_SLI_INTF_IF_TYPE_2: + if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr, + &portstat_reg.word0) || + lpfc_readl(phba->sli4_hba.PSMPHRregaddr, + &portsmphr)){ + phba->work_hs |= UNPLUG_ERR; + phba->work_ha |= HA_ERATT; + phba->hba_flag |= HBA_ERATT_HANDLED; + return 1; + } + if (bf_get(lpfc_sliport_status_err, &portstat_reg)) { + phba->work_status[0] = + readl(phba->sli4_hba.u.if_type2.ERR1regaddr); + phba->work_status[1] = + readl(phba->sli4_hba.u.if_type2.ERR2regaddr); + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2885 Port Status Event: " + "port status reg 0x%x, " + "port smphr reg 0x%x, " + "error 1=0x%x, error 2=0x%x\n", + portstat_reg.word0, + portsmphr, + phba->work_status[0], + phba->work_status[1]); + phba->work_ha |= HA_ERATT; + phba->hba_flag |= HBA_ERATT_HANDLED; + return 1; + } + break; + case LPFC_SLI_INTF_IF_TYPE_1: + default: + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2886 HBA Error Attention on unsupported " + "if type %d.", if_type); + return 1; + } + + return 0; +} + +/** + * lpfc_sli_check_eratt - check error attention events + * @phba: Pointer to HBA context. + * + * This function is called from timer soft interrupt context to check HBA's + * error attention register bit for error attention events. + * + * This function returns 1 when there is Error Attention in the Host Attention + * Register and returns 0 otherwise. + **/ +int +lpfc_sli_check_eratt(struct lpfc_hba *phba) +{ + uint32_t ha_copy; + + /* If somebody is waiting to handle an eratt, don't process it + * here. The brdkill function will do this. + */ + if (phba->link_flag & LS_IGNORE_ERATT) + return 0; + + /* Check if interrupt handler handles this ERATT */ + spin_lock_irq(&phba->hbalock); + if (phba->hba_flag & HBA_ERATT_HANDLED) { + /* Interrupt handler has handled ERATT */ + spin_unlock_irq(&phba->hbalock); + return 0; + } + + /* + * If there is deferred error attention, do not check for error + * attention + */ + if (unlikely(phba->hba_flag & DEFER_ERATT)) { + spin_unlock_irq(&phba->hbalock); + return 0; + } + + /* If PCI channel is offline, don't process it */ + if (unlikely(pci_channel_offline(phba->pcidev))) { + spin_unlock_irq(&phba->hbalock); + return 0; + } + + switch (phba->sli_rev) { + case LPFC_SLI_REV2: + case LPFC_SLI_REV3: + /* Read chip Host Attention (HA) register */ + ha_copy = lpfc_sli_eratt_read(phba); + break; + case LPFC_SLI_REV4: + /* Read device Uncoverable Error (UERR) registers */ + ha_copy = lpfc_sli4_eratt_read(phba); + break; + default: + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0299 Invalid SLI revision (%d)\n", + phba->sli_rev); + ha_copy = 0; + break; + } + spin_unlock_irq(&phba->hbalock); + + return ha_copy; +} + +/** + * lpfc_intr_state_check - Check device state for interrupt handling + * @phba: Pointer to HBA context. + * + * This inline routine checks whether a device or its PCI slot is in a state + * that the interrupt should be handled. + * + * This function returns 0 if the device or the PCI slot is in a state that + * interrupt should be handled, otherwise -EIO. + */ +static inline int +lpfc_intr_state_check(struct lpfc_hba *phba) +{ + /* If the pci channel is offline, ignore all the interrupts */ + if (unlikely(pci_channel_offline(phba->pcidev))) + return -EIO; + + /* Update device level interrupt statistics */ + phba->sli.slistat.sli_intr++; + + /* Ignore all interrupts during initialization. */ + if (unlikely(phba->link_state < LPFC_LINK_DOWN)) + return -EIO; + + return 0; +} + +/** + * lpfc_sli_sp_intr_handler - Slow-path interrupt handler to SLI-3 device + * @irq: Interrupt number. + * @dev_id: The device context pointer. + * + * This function is directly called from the PCI layer as an interrupt + * service routine when device with SLI-3 interface spec is enabled with + * MSI-X multi-message interrupt mode and there are slow-path events in + * the HBA. However, when the device is enabled with either MSI or Pin-IRQ + * interrupt mode, this function is called as part of the device-level + * interrupt handler. When the PCI slot is in error recovery or the HBA + * is undergoing initialization, the interrupt handler will not process + * the interrupt. The link attention and ELS ring attention events are + * handled by the worker thread. The interrupt handler signals the worker + * thread and returns for these events. This function is called without + * any lock held. It gets the hbalock to access and update SLI data + * structures. + * + * This function returns IRQ_HANDLED when interrupt is handled else it + * returns IRQ_NONE. + **/ +irqreturn_t +lpfc_sli_sp_intr_handler(int irq, void *dev_id) +{ + struct lpfc_hba *phba; + uint32_t ha_copy, hc_copy; + uint32_t work_ha_copy; + unsigned long status; + unsigned long iflag; + uint32_t control; + + MAILBOX_t *mbox, *pmbox; + struct lpfc_vport *vport; + struct lpfc_nodelist *ndlp; + struct lpfc_dmabuf *mp; + LPFC_MBOXQ_t *pmb; + int rc; + + /* + * Get the driver's phba structure from the dev_id and + * assume the HBA is not interrupting. + */ + phba = (struct lpfc_hba *)dev_id; + + if (unlikely(!phba)) + return IRQ_NONE; + + /* + * Stuff needs to be attented to when this function is invoked as an + * individual interrupt handler in MSI-X multi-message interrupt mode + */ + if (phba->intr_type == MSIX) { + /* Check device state for handling interrupt */ + if (lpfc_intr_state_check(phba)) + return IRQ_NONE; + /* Need to read HA REG for slow-path events */ + spin_lock_irqsave(&phba->hbalock, iflag); + if (lpfc_readl(phba->HAregaddr, &ha_copy)) + goto unplug_error; + /* If somebody is waiting to handle an eratt don't process it + * here. The brdkill function will do this. + */ + if (phba->link_flag & LS_IGNORE_ERATT) + ha_copy &= ~HA_ERATT; + /* Check the need for handling ERATT in interrupt handler */ + if (ha_copy & HA_ERATT) { + if (phba->hba_flag & HBA_ERATT_HANDLED) + /* ERATT polling has handled ERATT */ + ha_copy &= ~HA_ERATT; + else + /* Indicate interrupt handler handles ERATT */ + phba->hba_flag |= HBA_ERATT_HANDLED; + } + + /* + * If there is deferred error attention, do not check for any + * interrupt. + */ + if (unlikely(phba->hba_flag & DEFER_ERATT)) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + return IRQ_NONE; + } + + /* Clear up only attention source related to slow-path */ + if (lpfc_readl(phba->HCregaddr, &hc_copy)) + goto unplug_error; + + writel(hc_copy & ~(HC_MBINT_ENA | HC_R2INT_ENA | + HC_LAINT_ENA | HC_ERINT_ENA), + phba->HCregaddr); + writel((ha_copy & (HA_MBATT | HA_R2_CLR_MSK)), + phba->HAregaddr); + writel(hc_copy, phba->HCregaddr); + readl(phba->HAregaddr); /* flush */ + spin_unlock_irqrestore(&phba->hbalock, iflag); + } else + ha_copy = phba->ha_copy; + + work_ha_copy = ha_copy & phba->work_ha_mask; + + if (work_ha_copy) { + if (work_ha_copy & HA_LATT) { + if (phba->sli.sli_flag & LPFC_PROCESS_LA) { + /* + * Turn off Link Attention interrupts + * until CLEAR_LA done + */ + spin_lock_irqsave(&phba->hbalock, iflag); + phba->sli.sli_flag &= ~LPFC_PROCESS_LA; + if (lpfc_readl(phba->HCregaddr, &control)) + goto unplug_error; + control &= ~HC_LAINT_ENA; + writel(control, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + spin_unlock_irqrestore(&phba->hbalock, iflag); + } + else + work_ha_copy &= ~HA_LATT; + } + + if (work_ha_copy & ~(HA_ERATT | HA_MBATT | HA_LATT)) { + /* + * Turn off Slow Rings interrupts, LPFC_ELS_RING is + * the only slow ring. + */ + status = (work_ha_copy & + (HA_RXMASK << (4*LPFC_ELS_RING))); + status >>= (4*LPFC_ELS_RING); + if (status & HA_RXMASK) { + spin_lock_irqsave(&phba->hbalock, iflag); + if (lpfc_readl(phba->HCregaddr, &control)) + goto unplug_error; + + lpfc_debugfs_slow_ring_trc(phba, + "ISR slow ring: ctl:x%x stat:x%x isrcnt:x%x", + control, status, + (uint32_t)phba->sli.slistat.sli_intr); + + if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) { + lpfc_debugfs_slow_ring_trc(phba, + "ISR Disable ring:" + "pwork:x%x hawork:x%x wait:x%x", + phba->work_ha, work_ha_copy, + (uint32_t)((unsigned long) + &phba->work_waitq)); + + control &= + ~(HC_R0INT_ENA << LPFC_ELS_RING); + writel(control, phba->HCregaddr); + readl(phba->HCregaddr); /* flush */ + } + else { + lpfc_debugfs_slow_ring_trc(phba, + "ISR slow ring: pwork:" + "x%x hawork:x%x wait:x%x", + phba->work_ha, work_ha_copy, + (uint32_t)((unsigned long) + &phba->work_waitq)); + } + spin_unlock_irqrestore(&phba->hbalock, iflag); + } + } + spin_lock_irqsave(&phba->hbalock, iflag); + if (work_ha_copy & HA_ERATT) { + if (lpfc_sli_read_hs(phba)) + goto unplug_error; + /* + * Check if there is a deferred error condition + * is active + */ + if ((HS_FFER1 & phba->work_hs) && + ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 | + HS_FFER6 | HS_FFER7 | HS_FFER8) & + phba->work_hs)) { + phba->hba_flag |= DEFER_ERATT; + /* Clear all interrupt enable conditions */ + writel(0, phba->HCregaddr); + readl(phba->HCregaddr); + } + } + + if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) { + pmb = phba->sli.mbox_active; + pmbox = &pmb->u.mb; + mbox = phba->mbox; + vport = pmb->vport; + + /* First check out the status word */ + lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t)); + if (pmbox->mbxOwner != OWN_HOST) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + /* + * Stray Mailbox Interrupt, mbxCommand <cmd> + * mbxStatus <status> + */ + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | + LOG_SLI, + "(%d):0304 Stray Mailbox " + "Interrupt mbxCommand x%x " + "mbxStatus x%x\n", + (vport ? vport->vpi : 0), + pmbox->mbxCommand, + pmbox->mbxStatus); + /* clear mailbox attention bit */ + work_ha_copy &= ~HA_MBATT; + } else { + phba->sli.mbox_active = NULL; + spin_unlock_irqrestore(&phba->hbalock, iflag); + phba->last_completion_time = jiffies; + del_timer(&phba->sli.mbox_tmo); + if (pmb->mbox_cmpl) { + lpfc_sli_pcimem_bcopy(mbox, pmbox, + MAILBOX_CMD_SIZE); + if (pmb->out_ext_byte_len && + pmb->context2) + lpfc_sli_pcimem_bcopy( + phba->mbox_ext, + pmb->context2, + pmb->out_ext_byte_len); + } + if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) { + pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG; + + lpfc_debugfs_disc_trc(vport, + LPFC_DISC_TRC_MBOX_VPORT, + "MBOX dflt rpi: : " + "status:x%x rpi:x%x", + (uint32_t)pmbox->mbxStatus, + pmbox->un.varWords[0], 0); + + if (!pmbox->mbxStatus) { + mp = (struct lpfc_dmabuf *) + (pmb->context1); + ndlp = (struct lpfc_nodelist *) + pmb->context2; + + /* Reg_LOGIN of dflt RPI was + * successful. new lets get + * rid of the RPI using the + * same mbox buffer. + */ + lpfc_unreg_login(phba, + vport->vpi, + pmbox->un.varWords[0], + pmb); + pmb->mbox_cmpl = + lpfc_mbx_cmpl_dflt_rpi; + pmb->context1 = mp; + pmb->context2 = ndlp; + pmb->vport = vport; + rc = lpfc_sli_issue_mbox(phba, + pmb, + MBX_NOWAIT); + if (rc != MBX_BUSY) + lpfc_printf_log(phba, + KERN_ERR, + LOG_MBOX | LOG_SLI, + "0350 rc should have" + "been MBX_BUSY\n"); + if (rc != MBX_NOT_FINISHED) + goto send_current_mbox; + } + } + spin_lock_irqsave( + &phba->pport->work_port_lock, + iflag); + phba->pport->work_port_events &= + ~WORKER_MBOX_TMO; + spin_unlock_irqrestore( + &phba->pport->work_port_lock, + iflag); + lpfc_mbox_cmpl_put(phba, pmb); + } + } else + spin_unlock_irqrestore(&phba->hbalock, iflag); + + if ((work_ha_copy & HA_MBATT) && + (phba->sli.mbox_active == NULL)) { +send_current_mbox: + /* Process next mailbox command if there is one */ + do { + rc = lpfc_sli_issue_mbox(phba, NULL, + MBX_NOWAIT); + } while (rc == MBX_NOT_FINISHED); + if (rc != MBX_SUCCESS) + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | + LOG_SLI, "0349 rc should be " + "MBX_SUCCESS\n"); + } + + spin_lock_irqsave(&phba->hbalock, iflag); + phba->work_ha |= work_ha_copy; + spin_unlock_irqrestore(&phba->hbalock, iflag); + lpfc_worker_wake_up(phba); + } + return IRQ_HANDLED; +unplug_error: + spin_unlock_irqrestore(&phba->hbalock, iflag); + return IRQ_HANDLED; + +} /* lpfc_sli_sp_intr_handler */ + +/** + * lpfc_sli_fp_intr_handler - Fast-path interrupt handler to SLI-3 device. + * @irq: Interrupt number. + * @dev_id: The device context pointer. + * + * This function is directly called from the PCI layer as an interrupt + * service routine when device with SLI-3 interface spec is enabled with + * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB + * ring event in the HBA. However, when the device is enabled with either + * MSI or Pin-IRQ interrupt mode, this function is called as part of the + * device-level interrupt handler. When the PCI slot is in error recovery + * or the HBA is undergoing initialization, the interrupt handler will not + * process the interrupt. The SCSI FCP fast-path ring event are handled in + * the intrrupt context. This function is called without any lock held. + * It gets the hbalock to access and update SLI data structures. + * + * This function returns IRQ_HANDLED when interrupt is handled else it + * returns IRQ_NONE. + **/ +irqreturn_t +lpfc_sli_fp_intr_handler(int irq, void *dev_id) +{ + struct lpfc_hba *phba; + uint32_t ha_copy; + unsigned long status; + unsigned long iflag; + + /* Get the driver's phba structure from the dev_id and + * assume the HBA is not interrupting. + */ + phba = (struct lpfc_hba *) dev_id; + + if (unlikely(!phba)) + return IRQ_NONE; + + /* + * Stuff needs to be attented to when this function is invoked as an + * individual interrupt handler in MSI-X multi-message interrupt mode + */ + if (phba->intr_type == MSIX) { + /* Check device state for handling interrupt */ + if (lpfc_intr_state_check(phba)) + return IRQ_NONE; + /* Need to read HA REG for FCP ring and other ring events */ + if (lpfc_readl(phba->HAregaddr, &ha_copy)) + return IRQ_HANDLED; + /* Clear up only attention source related to fast-path */ + spin_lock_irqsave(&phba->hbalock, iflag); + /* + * If there is deferred error attention, do not check for + * any interrupt. + */ + if (unlikely(phba->hba_flag & DEFER_ERATT)) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + return IRQ_NONE; + } + writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)), + phba->HAregaddr); + readl(phba->HAregaddr); /* flush */ + spin_unlock_irqrestore(&phba->hbalock, iflag); + } else + ha_copy = phba->ha_copy; + + /* + * Process all events on FCP ring. Take the optimized path for FCP IO. + */ + ha_copy &= ~(phba->work_ha_mask); + + status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING))); + status >>= (4*LPFC_FCP_RING); + if (status & HA_RXMASK) + lpfc_sli_handle_fast_ring_event(phba, + &phba->sli.ring[LPFC_FCP_RING], + status); + + if (phba->cfg_multi_ring_support == 2) { + /* + * Process all events on extra ring. Take the optimized path + * for extra ring IO. + */ + status = (ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING))); + status >>= (4*LPFC_EXTRA_RING); + if (status & HA_RXMASK) { + lpfc_sli_handle_fast_ring_event(phba, + &phba->sli.ring[LPFC_EXTRA_RING], + status); + } + } + return IRQ_HANDLED; +} /* lpfc_sli_fp_intr_handler */ + +/** + * lpfc_sli_intr_handler - Device-level interrupt handler to SLI-3 device + * @irq: Interrupt number. + * @dev_id: The device context pointer. + * + * This function is the HBA device-level interrupt handler to device with + * SLI-3 interface spec, called from the PCI layer when either MSI or + * Pin-IRQ interrupt mode is enabled and there is an event in the HBA which + * requires driver attention. This function invokes the slow-path interrupt + * attention handling function and fast-path interrupt attention handling + * function in turn to process the relevant HBA attention events. This + * function is called without any lock held. It gets the hbalock to access + * and update SLI data structures. + * + * This function returns IRQ_HANDLED when interrupt is handled, else it + * returns IRQ_NONE. + **/ +irqreturn_t +lpfc_sli_intr_handler(int irq, void *dev_id) +{ + struct lpfc_hba *phba; + irqreturn_t sp_irq_rc, fp_irq_rc; + unsigned long status1, status2; + uint32_t hc_copy; + + /* + * Get the driver's phba structure from the dev_id and + * assume the HBA is not interrupting. + */ + phba = (struct lpfc_hba *) dev_id; + + if (unlikely(!phba)) + return IRQ_NONE; + + /* Check device state for handling interrupt */ + if (lpfc_intr_state_check(phba)) + return IRQ_NONE; + + spin_lock(&phba->hbalock); + if (lpfc_readl(phba->HAregaddr, &phba->ha_copy)) { + spin_unlock(&phba->hbalock); + return IRQ_HANDLED; + } + + if (unlikely(!phba->ha_copy)) { + spin_unlock(&phba->hbalock); + return IRQ_NONE; + } else if (phba->ha_copy & HA_ERATT) { + if (phba->hba_flag & HBA_ERATT_HANDLED) + /* ERATT polling has handled ERATT */ + phba->ha_copy &= ~HA_ERATT; + else + /* Indicate interrupt handler handles ERATT */ + phba->hba_flag |= HBA_ERATT_HANDLED; + } + + /* + * If there is deferred error attention, do not check for any interrupt. + */ + if (unlikely(phba->hba_flag & DEFER_ERATT)) { + spin_unlock(&phba->hbalock); + return IRQ_NONE; + } + + /* Clear attention sources except link and error attentions */ + if (lpfc_readl(phba->HCregaddr, &hc_copy)) { + spin_unlock(&phba->hbalock); + return IRQ_HANDLED; + } + writel(hc_copy & ~(HC_MBINT_ENA | HC_R0INT_ENA | HC_R1INT_ENA + | HC_R2INT_ENA | HC_LAINT_ENA | HC_ERINT_ENA), + phba->HCregaddr); + writel((phba->ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr); + writel(hc_copy, phba->HCregaddr); + readl(phba->HAregaddr); /* flush */ + spin_unlock(&phba->hbalock); + + /* + * Invokes slow-path host attention interrupt handling as appropriate. + */ + + /* status of events with mailbox and link attention */ + status1 = phba->ha_copy & (HA_MBATT | HA_LATT | HA_ERATT); + + /* status of events with ELS ring */ + status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); + status2 >>= (4*LPFC_ELS_RING); + + if (status1 || (status2 & HA_RXMASK)) + sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id); + else + sp_irq_rc = IRQ_NONE; + + /* + * Invoke fast-path host attention interrupt handling as appropriate. + */ + + /* status of events with FCP ring */ + status1 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING))); + status1 >>= (4*LPFC_FCP_RING); + + /* status of events with extra ring */ + if (phba->cfg_multi_ring_support == 2) { + status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING))); + status2 >>= (4*LPFC_EXTRA_RING); + } else + status2 = 0; + + if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK)) + fp_irq_rc = lpfc_sli_fp_intr_handler(irq, dev_id); + else + fp_irq_rc = IRQ_NONE; + + /* Return device-level interrupt handling status */ + return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc; +} /* lpfc_sli_intr_handler */ + +/** + * lpfc_sli4_fcp_xri_abort_event_proc - Process fcp xri abort event + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked by the worker thread to process all the pending + * SLI4 FCP abort XRI events. + **/ +void lpfc_sli4_fcp_xri_abort_event_proc(struct lpfc_hba *phba) +{ + struct lpfc_cq_event *cq_event; + + /* First, declare the fcp xri abort event has been handled */ + spin_lock_irq(&phba->hbalock); + phba->hba_flag &= ~FCP_XRI_ABORT_EVENT; + spin_unlock_irq(&phba->hbalock); + /* Now, handle all the fcp xri abort events */ + while (!list_empty(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue)) { + /* Get the first event from the head of the event queue */ + spin_lock_irq(&phba->hbalock); + list_remove_head(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue, + cq_event, struct lpfc_cq_event, list); + spin_unlock_irq(&phba->hbalock); + /* Notify aborted XRI for FCP work queue */ + lpfc_sli4_fcp_xri_aborted(phba, &cq_event->cqe.wcqe_axri); + /* Free the event processed back to the free pool */ + lpfc_sli4_cq_event_release(phba, cq_event); + } +} + +/** + * lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked by the worker thread to process all the pending + * SLI4 els abort xri events. + **/ +void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba) +{ + struct lpfc_cq_event *cq_event; + + /* First, declare the els xri abort event has been handled */ + spin_lock_irq(&phba->hbalock); + phba->hba_flag &= ~ELS_XRI_ABORT_EVENT; + spin_unlock_irq(&phba->hbalock); + /* Now, handle all the els xri abort events */ + while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) { + /* Get the first event from the head of the event queue */ + spin_lock_irq(&phba->hbalock); + list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue, + cq_event, struct lpfc_cq_event, list); + spin_unlock_irq(&phba->hbalock); + /* Notify aborted XRI for ELS work queue */ + lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri); + /* Free the event processed back to the free pool */ + lpfc_sli4_cq_event_release(phba, cq_event); + } +} + +/** + * lpfc_sli4_iocb_param_transfer - Transfer pIocbOut and cmpl status to pIocbIn + * @phba: pointer to lpfc hba data structure + * @pIocbIn: pointer to the rspiocbq + * @pIocbOut: pointer to the cmdiocbq + * @wcqe: pointer to the complete wcqe + * + * This routine transfers the fields of a command iocbq to a response iocbq + * by copying all the IOCB fields from command iocbq and transferring the + * completion status information from the complete wcqe. + **/ +static void +lpfc_sli4_iocb_param_transfer(struct lpfc_hba *phba, + struct lpfc_iocbq *pIocbIn, + struct lpfc_iocbq *pIocbOut, + struct lpfc_wcqe_complete *wcqe) +{ + int numBdes, i; + unsigned long iflags; + uint32_t status, max_response; + struct lpfc_dmabuf *dmabuf; + struct ulp_bde64 *bpl, bde; + size_t offset = offsetof(struct lpfc_iocbq, iocb); + + memcpy((char *)pIocbIn + offset, (char *)pIocbOut + offset, + sizeof(struct lpfc_iocbq) - offset); + /* Map WCQE parameters into irspiocb parameters */ + status = bf_get(lpfc_wcqe_c_status, wcqe); + pIocbIn->iocb.ulpStatus = (status & LPFC_IOCB_STATUS_MASK); + if (pIocbOut->iocb_flag & LPFC_IO_FCP) + if (pIocbIn->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR) + pIocbIn->iocb.un.fcpi.fcpi_parm = + pIocbOut->iocb.un.fcpi.fcpi_parm - + wcqe->total_data_placed; + else + pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter; + else { + pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter; + switch (pIocbOut->iocb.ulpCommand) { + case CMD_ELS_REQUEST64_CR: + dmabuf = (struct lpfc_dmabuf *)pIocbOut->context3; + bpl = (struct ulp_bde64 *)dmabuf->virt; + bde.tus.w = le32_to_cpu(bpl[1].tus.w); + max_response = bde.tus.f.bdeSize; + break; + case CMD_GEN_REQUEST64_CR: + max_response = 0; + if (!pIocbOut->context3) + break; + numBdes = pIocbOut->iocb.un.genreq64.bdl.bdeSize/ + sizeof(struct ulp_bde64); + dmabuf = (struct lpfc_dmabuf *)pIocbOut->context3; + bpl = (struct ulp_bde64 *)dmabuf->virt; + for (i = 0; i < numBdes; i++) { + bde.tus.w = le32_to_cpu(bpl[i].tus.w); + if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) + max_response += bde.tus.f.bdeSize; + } + break; + default: + max_response = wcqe->total_data_placed; + break; + } + if (max_response < wcqe->total_data_placed) + pIocbIn->iocb.un.genreq64.bdl.bdeSize = max_response; + else + pIocbIn->iocb.un.genreq64.bdl.bdeSize = + wcqe->total_data_placed; + } + + /* Convert BG errors for completion status */ + if (status == CQE_STATUS_DI_ERROR) { + pIocbIn->iocb.ulpStatus = IOSTAT_LOCAL_REJECT; + + if (bf_get(lpfc_wcqe_c_bg_edir, wcqe)) + pIocbIn->iocb.un.ulpWord[4] = IOERR_RX_DMA_FAILED; + else + pIocbIn->iocb.un.ulpWord[4] = IOERR_TX_DMA_FAILED; + + pIocbIn->iocb.unsli3.sli3_bg.bgstat = 0; + if (bf_get(lpfc_wcqe_c_bg_ge, wcqe)) /* Guard Check failed */ + pIocbIn->iocb.unsli3.sli3_bg.bgstat |= + BGS_GUARD_ERR_MASK; + if (bf_get(lpfc_wcqe_c_bg_ae, wcqe)) /* App Tag Check failed */ + pIocbIn->iocb.unsli3.sli3_bg.bgstat |= + BGS_APPTAG_ERR_MASK; + if (bf_get(lpfc_wcqe_c_bg_re, wcqe)) /* Ref Tag Check failed */ + pIocbIn->iocb.unsli3.sli3_bg.bgstat |= + BGS_REFTAG_ERR_MASK; + + /* Check to see if there was any good data before the error */ + if (bf_get(lpfc_wcqe_c_bg_tdpv, wcqe)) { + pIocbIn->iocb.unsli3.sli3_bg.bgstat |= + BGS_HI_WATER_MARK_PRESENT_MASK; + pIocbIn->iocb.unsli3.sli3_bg.bghm = + wcqe->total_data_placed; + } + + /* + * Set ALL the error bits to indicate we don't know what + * type of error it is. + */ + if (!pIocbIn->iocb.unsli3.sli3_bg.bgstat) + pIocbIn->iocb.unsli3.sli3_bg.bgstat |= + (BGS_REFTAG_ERR_MASK | BGS_APPTAG_ERR_MASK | + BGS_GUARD_ERR_MASK); + } + + /* Pick up HBA exchange busy condition */ + if (bf_get(lpfc_wcqe_c_xb, wcqe)) { + spin_lock_irqsave(&phba->hbalock, iflags); + pIocbIn->iocb_flag |= LPFC_EXCHANGE_BUSY; + spin_unlock_irqrestore(&phba->hbalock, iflags); + } +} + +/** + * lpfc_sli4_els_wcqe_to_rspiocbq - Get response iocbq from els wcqe + * @phba: Pointer to HBA context object. + * @wcqe: Pointer to work-queue completion queue entry. + * + * This routine handles an ELS work-queue completion event and construct + * a pseudo response ELS IODBQ from the SLI4 ELS WCQE for the common + * discovery engine to handle. + * + * Return: Pointer to the receive IOCBQ, NULL otherwise. + **/ +static struct lpfc_iocbq * +lpfc_sli4_els_wcqe_to_rspiocbq(struct lpfc_hba *phba, + struct lpfc_iocbq *irspiocbq) +{ + struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; + struct lpfc_iocbq *cmdiocbq; + struct lpfc_wcqe_complete *wcqe; + unsigned long iflags; + + wcqe = &irspiocbq->cq_event.cqe.wcqe_cmpl; + spin_lock_irqsave(&pring->ring_lock, iflags); + pring->stats.iocb_event++; + /* Look up the ELS command IOCB and create pseudo response IOCB */ + cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring, + bf_get(lpfc_wcqe_c_request_tag, wcqe)); + spin_unlock_irqrestore(&pring->ring_lock, iflags); + + if (unlikely(!cmdiocbq)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0386 ELS complete with no corresponding " + "cmdiocb: iotag (%d)\n", + bf_get(lpfc_wcqe_c_request_tag, wcqe)); + lpfc_sli_release_iocbq(phba, irspiocbq); + return NULL; + } + + /* Fake the irspiocbq and copy necessary response information */ + lpfc_sli4_iocb_param_transfer(phba, irspiocbq, cmdiocbq, wcqe); + + return irspiocbq; +} + +/** + * lpfc_sli4_sp_handle_async_event - Handle an asynchroous event + * @phba: Pointer to HBA context object. + * @cqe: Pointer to mailbox completion queue entry. + * + * This routine process a mailbox completion queue entry with asynchrous + * event. + * + * Return: true if work posted to worker thread, otherwise false. + **/ +static bool +lpfc_sli4_sp_handle_async_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe) +{ + struct lpfc_cq_event *cq_event; + unsigned long iflags; + + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0392 Async Event: word0:x%x, word1:x%x, " + "word2:x%x, word3:x%x\n", mcqe->word0, + mcqe->mcqe_tag0, mcqe->mcqe_tag1, mcqe->trailer); + + /* Allocate a new internal CQ_EVENT entry */ + cq_event = lpfc_sli4_cq_event_alloc(phba); + if (!cq_event) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0394 Failed to allocate CQ_EVENT entry\n"); + return false; + } + + /* Move the CQE into an asynchronous event entry */ + memcpy(&cq_event->cqe, mcqe, sizeof(struct lpfc_mcqe)); + spin_lock_irqsave(&phba->hbalock, iflags); + list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue); + /* Set the async event flag */ + phba->hba_flag |= ASYNC_EVENT; + spin_unlock_irqrestore(&phba->hbalock, iflags); + + return true; +} + +/** + * lpfc_sli4_sp_handle_mbox_event - Handle a mailbox completion event + * @phba: Pointer to HBA context object. + * @cqe: Pointer to mailbox completion queue entry. + * + * This routine process a mailbox completion queue entry with mailbox + * completion event. + * + * Return: true if work posted to worker thread, otherwise false. + **/ +static bool +lpfc_sli4_sp_handle_mbox_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe) +{ + uint32_t mcqe_status; + MAILBOX_t *mbox, *pmbox; + struct lpfc_mqe *mqe; + struct lpfc_vport *vport; + struct lpfc_nodelist *ndlp; + struct lpfc_dmabuf *mp; + unsigned long iflags; + LPFC_MBOXQ_t *pmb; + bool workposted = false; + int rc; + + /* If not a mailbox complete MCQE, out by checking mailbox consume */ + if (!bf_get(lpfc_trailer_completed, mcqe)) + goto out_no_mqe_complete; + + /* Get the reference to the active mbox command */ + spin_lock_irqsave(&phba->hbalock, iflags); + pmb = phba->sli.mbox_active; + if (unlikely(!pmb)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, + "1832 No pending MBOX command to handle\n"); + spin_unlock_irqrestore(&phba->hbalock, iflags); + goto out_no_mqe_complete; + } + spin_unlock_irqrestore(&phba->hbalock, iflags); + mqe = &pmb->u.mqe; + pmbox = (MAILBOX_t *)&pmb->u.mqe; + mbox = phba->mbox; + vport = pmb->vport; + + /* Reset heartbeat timer */ + phba->last_completion_time = jiffies; + del_timer(&phba->sli.mbox_tmo); + + /* Move mbox data to caller's mailbox region, do endian swapping */ + if (pmb->mbox_cmpl && mbox) + lpfc_sli_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe)); + + /* + * For mcqe errors, conditionally move a modified error code to + * the mbox so that the error will not be missed. + */ + mcqe_status = bf_get(lpfc_mcqe_status, mcqe); + if (mcqe_status != MB_CQE_STATUS_SUCCESS) { + if (bf_get(lpfc_mqe_status, mqe) == MBX_SUCCESS) + bf_set(lpfc_mqe_status, mqe, + (LPFC_MBX_ERROR_RANGE | mcqe_status)); + } + if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) { + pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG; + lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT, + "MBOX dflt rpi: status:x%x rpi:x%x", + mcqe_status, + pmbox->un.varWords[0], 0); + if (mcqe_status == MB_CQE_STATUS_SUCCESS) { + mp = (struct lpfc_dmabuf *)(pmb->context1); + ndlp = (struct lpfc_nodelist *)pmb->context2; + /* Reg_LOGIN of dflt RPI was successful. Now lets get + * RID of the PPI using the same mbox buffer. + */ + lpfc_unreg_login(phba, vport->vpi, + pmbox->un.varWords[0], pmb); + pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi; + pmb->context1 = mp; + pmb->context2 = ndlp; + pmb->vport = vport; + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); + if (rc != MBX_BUSY) + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | + LOG_SLI, "0385 rc should " + "have been MBX_BUSY\n"); + if (rc != MBX_NOT_FINISHED) + goto send_current_mbox; + } + } + spin_lock_irqsave(&phba->pport->work_port_lock, iflags); + phba->pport->work_port_events &= ~WORKER_MBOX_TMO; + spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags); + + /* There is mailbox completion work to do */ + spin_lock_irqsave(&phba->hbalock, iflags); + __lpfc_mbox_cmpl_put(phba, pmb); + phba->work_ha |= HA_MBATT; + spin_unlock_irqrestore(&phba->hbalock, iflags); + workposted = true; + +send_current_mbox: + spin_lock_irqsave(&phba->hbalock, iflags); + /* Release the mailbox command posting token */ + phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE; + /* Setting active mailbox pointer need to be in sync to flag clear */ + phba->sli.mbox_active = NULL; + spin_unlock_irqrestore(&phba->hbalock, iflags); + /* Wake up worker thread to post the next pending mailbox command */ + lpfc_worker_wake_up(phba); +out_no_mqe_complete: + if (bf_get(lpfc_trailer_consumed, mcqe)) + lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq); + return workposted; +} + +/** + * lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry + * @phba: Pointer to HBA context object. + * @cqe: Pointer to mailbox completion queue entry. + * + * This routine process a mailbox completion queue entry, it invokes the + * proper mailbox complete handling or asynchrous event handling routine + * according to the MCQE's async bit. + * + * Return: true if work posted to worker thread, otherwise false. + **/ +static bool +lpfc_sli4_sp_handle_mcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe) +{ + struct lpfc_mcqe mcqe; + bool workposted; + + /* Copy the mailbox MCQE and convert endian order as needed */ + lpfc_sli_pcimem_bcopy(cqe, &mcqe, sizeof(struct lpfc_mcqe)); + + /* Invoke the proper event handling routine */ + if (!bf_get(lpfc_trailer_async, &mcqe)) + workposted = lpfc_sli4_sp_handle_mbox_event(phba, &mcqe); + else + workposted = lpfc_sli4_sp_handle_async_event(phba, &mcqe); + return workposted; +} + +/** + * lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event + * @phba: Pointer to HBA context object. + * @cq: Pointer to associated CQ + * @wcqe: Pointer to work-queue completion queue entry. + * + * This routine handles an ELS work-queue completion event. + * + * Return: true if work posted to worker thread, otherwise false. + **/ +static bool +lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_iocbq *irspiocbq; + unsigned long iflags; + struct lpfc_sli_ring *pring = cq->pring; + int txq_cnt = 0; + int txcmplq_cnt = 0; + int fcp_txcmplq_cnt = 0; + + /* Get an irspiocbq for later ELS response processing use */ + irspiocbq = lpfc_sli_get_iocbq(phba); + if (!irspiocbq) { + if (!list_empty(&pring->txq)) + txq_cnt++; + if (!list_empty(&pring->txcmplq)) + txcmplq_cnt++; + if (!list_empty(&phba->sli.ring[LPFC_FCP_RING].txcmplq)) + fcp_txcmplq_cnt++; + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0387 NO IOCBQ data: txq_cnt=%d iocb_cnt=%d " + "fcp_txcmplq_cnt=%d, els_txcmplq_cnt=%d\n", + txq_cnt, phba->iocb_cnt, + fcp_txcmplq_cnt, + txcmplq_cnt); + return false; + } + + /* Save off the slow-path queue event for work thread to process */ + memcpy(&irspiocbq->cq_event.cqe.wcqe_cmpl, wcqe, sizeof(*wcqe)); + spin_lock_irqsave(&phba->hbalock, iflags); + list_add_tail(&irspiocbq->cq_event.list, + &phba->sli4_hba.sp_queue_event); + phba->hba_flag |= HBA_SP_QUEUE_EVT; + spin_unlock_irqrestore(&phba->hbalock, iflags); + + return true; +} + +/** + * lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event + * @phba: Pointer to HBA context object. + * @wcqe: Pointer to work-queue completion queue entry. + * + * This routine handles slow-path WQ entry comsumed event by invoking the + * proper WQ release routine to the slow-path WQ. + **/ +static void +lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba, + struct lpfc_wcqe_release *wcqe) +{ + /* sanity check on queue memory */ + if (unlikely(!phba->sli4_hba.els_wq)) + return; + /* Check for the slow-path ELS work queue */ + if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id) + lpfc_sli4_wq_release(phba->sli4_hba.els_wq, + bf_get(lpfc_wcqe_r_wqe_index, wcqe)); + else + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "2579 Slow-path wqe consume event carries " + "miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n", + bf_get(lpfc_wcqe_r_wqe_index, wcqe), + phba->sli4_hba.els_wq->queue_id); +} + +/** + * lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event + * @phba: Pointer to HBA context object. + * @cq: Pointer to a WQ completion queue. + * @wcqe: Pointer to work-queue completion queue entry. + * + * This routine handles an XRI abort event. + * + * Return: true if work posted to worker thread, otherwise false. + **/ +static bool +lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba, + struct lpfc_queue *cq, + struct sli4_wcqe_xri_aborted *wcqe) +{ + bool workposted = false; + struct lpfc_cq_event *cq_event; + unsigned long iflags; + + /* Allocate a new internal CQ_EVENT entry */ + cq_event = lpfc_sli4_cq_event_alloc(phba); + if (!cq_event) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0602 Failed to allocate CQ_EVENT entry\n"); + return false; + } + + /* Move the CQE into the proper xri abort event list */ + memcpy(&cq_event->cqe, wcqe, sizeof(struct sli4_wcqe_xri_aborted)); + switch (cq->subtype) { + case LPFC_FCP: + spin_lock_irqsave(&phba->hbalock, iflags); + list_add_tail(&cq_event->list, + &phba->sli4_hba.sp_fcp_xri_aborted_work_queue); + /* Set the fcp xri abort event flag */ + phba->hba_flag |= FCP_XRI_ABORT_EVENT; + spin_unlock_irqrestore(&phba->hbalock, iflags); + workposted = true; + break; + case LPFC_ELS: + spin_lock_irqsave(&phba->hbalock, iflags); + list_add_tail(&cq_event->list, + &phba->sli4_hba.sp_els_xri_aborted_work_queue); + /* Set the els xri abort event flag */ + phba->hba_flag |= ELS_XRI_ABORT_EVENT; + spin_unlock_irqrestore(&phba->hbalock, iflags); + workposted = true; + break; + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0603 Invalid work queue CQE subtype (x%x)\n", + cq->subtype); + workposted = false; + break; + } + return workposted; +} + +/** + * lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry + * @phba: Pointer to HBA context object. + * @rcqe: Pointer to receive-queue completion queue entry. + * + * This routine process a receive-queue completion queue entry. + * + * Return: true if work posted to worker thread, otherwise false. + **/ +static bool +lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_rcqe *rcqe) +{ + bool workposted = false; + struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq; + struct lpfc_queue *drq = phba->sli4_hba.dat_rq; + struct hbq_dmabuf *dma_buf; + uint32_t status, rq_id; + unsigned long iflags; + + /* sanity check on queue memory */ + if (unlikely(!hrq) || unlikely(!drq)) + return workposted; + + if (bf_get(lpfc_cqe_code, rcqe) == CQE_CODE_RECEIVE_V1) + rq_id = bf_get(lpfc_rcqe_rq_id_v1, rcqe); + else + rq_id = bf_get(lpfc_rcqe_rq_id, rcqe); + if (rq_id != hrq->queue_id) + goto out; + + status = bf_get(lpfc_rcqe_status, rcqe); + switch (status) { + case FC_STATUS_RQ_BUF_LEN_EXCEEDED: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2537 Receive Frame Truncated!!\n"); + hrq->RQ_buf_trunc++; + case FC_STATUS_RQ_SUCCESS: + lpfc_sli4_rq_release(hrq, drq); + spin_lock_irqsave(&phba->hbalock, iflags); + dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list); + if (!dma_buf) { + hrq->RQ_no_buf_found++; + spin_unlock_irqrestore(&phba->hbalock, iflags); + goto out; + } + hrq->RQ_rcv_buf++; + memcpy(&dma_buf->cq_event.cqe.rcqe_cmpl, rcqe, sizeof(*rcqe)); + /* save off the frame for the word thread to process */ + list_add_tail(&dma_buf->cq_event.list, + &phba->sli4_hba.sp_queue_event); + /* Frame received */ + phba->hba_flag |= HBA_SP_QUEUE_EVT; + spin_unlock_irqrestore(&phba->hbalock, iflags); + workposted = true; + break; + case FC_STATUS_INSUFF_BUF_NEED_BUF: + case FC_STATUS_INSUFF_BUF_FRM_DISC: + hrq->RQ_no_posted_buf++; + /* Post more buffers if possible */ + spin_lock_irqsave(&phba->hbalock, iflags); + phba->hba_flag |= HBA_POST_RECEIVE_BUFFER; + spin_unlock_irqrestore(&phba->hbalock, iflags); + workposted = true; + break; + } +out: + return workposted; +} + +/** + * lpfc_sli4_sp_handle_cqe - Process a slow path completion queue entry + * @phba: Pointer to HBA context object. + * @cq: Pointer to the completion queue. + * @wcqe: Pointer to a completion queue entry. + * + * This routine process a slow-path work-queue or receive queue completion queue + * entry. + * + * Return: true if work posted to worker thread, otherwise false. + **/ +static bool +lpfc_sli4_sp_handle_cqe(struct lpfc_hba *phba, struct lpfc_queue *cq, + struct lpfc_cqe *cqe) +{ + struct lpfc_cqe cqevt; + bool workposted = false; + + /* Copy the work queue CQE and convert endian order if needed */ + lpfc_sli_pcimem_bcopy(cqe, &cqevt, sizeof(struct lpfc_cqe)); + + /* Check and process for different type of WCQE and dispatch */ + switch (bf_get(lpfc_cqe_code, &cqevt)) { + case CQE_CODE_COMPL_WQE: + /* Process the WQ/RQ complete event */ + phba->last_completion_time = jiffies; + workposted = lpfc_sli4_sp_handle_els_wcqe(phba, cq, + (struct lpfc_wcqe_complete *)&cqevt); + break; + case CQE_CODE_RELEASE_WQE: + /* Process the WQ release event */ + lpfc_sli4_sp_handle_rel_wcqe(phba, + (struct lpfc_wcqe_release *)&cqevt); + break; + case CQE_CODE_XRI_ABORTED: + /* Process the WQ XRI abort event */ + phba->last_completion_time = jiffies; + workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq, + (struct sli4_wcqe_xri_aborted *)&cqevt); + break; + case CQE_CODE_RECEIVE: + case CQE_CODE_RECEIVE_V1: + /* Process the RQ event */ + phba->last_completion_time = jiffies; + workposted = lpfc_sli4_sp_handle_rcqe(phba, + (struct lpfc_rcqe *)&cqevt); + break; + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0388 Not a valid WCQE code: x%x\n", + bf_get(lpfc_cqe_code, &cqevt)); + break; + } + return workposted; +} + +/** + * lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry + * @phba: Pointer to HBA context object. + * @eqe: Pointer to fast-path event queue entry. + * + * This routine process a event queue entry from the slow-path event queue. + * It will check the MajorCode and MinorCode to determine this is for a + * completion event on a completion queue, if not, an error shall be logged + * and just return. Otherwise, it will get to the corresponding completion + * queue and process all the entries on that completion queue, rearm the + * completion queue, and then return. + * + **/ +static void +lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe, + struct lpfc_queue *speq) +{ + struct lpfc_queue *cq = NULL, *childq; + struct lpfc_cqe *cqe; + bool workposted = false; + int ecount = 0; + uint16_t cqid; + + /* Get the reference to the corresponding CQ */ + cqid = bf_get_le32(lpfc_eqe_resource_id, eqe); + + list_for_each_entry(childq, &speq->child_list, list) { + if (childq->queue_id == cqid) { + cq = childq; + break; + } + } + if (unlikely(!cq)) { + if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0365 Slow-path CQ identifier " + "(%d) does not exist\n", cqid); + return; + } + + /* Process all the entries to the CQ */ + switch (cq->type) { + case LPFC_MCQ: + while ((cqe = lpfc_sli4_cq_get(cq))) { + workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe); + if (!(++ecount % cq->entry_repost)) + lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); + cq->CQ_mbox++; + } + break; + case LPFC_WCQ: + while ((cqe = lpfc_sli4_cq_get(cq))) { + if (cq->subtype == LPFC_FCP) + workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, + cqe); + else + workposted |= lpfc_sli4_sp_handle_cqe(phba, cq, + cqe); + if (!(++ecount % cq->entry_repost)) + lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); + } + + /* Track the max number of CQEs processed in 1 EQ */ + if (ecount > cq->CQ_max_cqe) + cq->CQ_max_cqe = ecount; + break; + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0370 Invalid completion queue type (%d)\n", + cq->type); + return; + } + + /* Catch the no cq entry condition, log an error */ + if (unlikely(ecount == 0)) + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0371 No entry from the CQ: identifier " + "(x%x), type (%d)\n", cq->queue_id, cq->type); + + /* In any case, flash and re-arm the RCQ */ + lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM); + + /* wake up worker thread if there are works to be done */ + if (workposted) + lpfc_worker_wake_up(phba); +} + +/** + * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry + * @phba: Pointer to HBA context object. + * @cq: Pointer to associated CQ + * @wcqe: Pointer to work-queue completion queue entry. + * + * This routine process a fast-path work queue completion entry from fast-path + * event queue for FCP command response completion. + **/ +static void +lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, + struct lpfc_wcqe_complete *wcqe) +{ + struct lpfc_sli_ring *pring = cq->pring; + struct lpfc_iocbq *cmdiocbq; + struct lpfc_iocbq irspiocbq; + unsigned long iflags; + + /* Check for response status */ + if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) { + /* If resource errors reported from HBA, reduce queue + * depth of the SCSI device. + */ + if (((bf_get(lpfc_wcqe_c_status, wcqe) == + IOSTAT_LOCAL_REJECT)) && + ((wcqe->parameter & IOERR_PARAM_MASK) == + IOERR_NO_RESOURCES)) + phba->lpfc_rampdown_queue_depth(phba); + + /* Log the error status */ + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0373 FCP complete error: status=x%x, " + "hw_status=x%x, total_data_specified=%d, " + "parameter=x%x, word3=x%x\n", + bf_get(lpfc_wcqe_c_status, wcqe), + bf_get(lpfc_wcqe_c_hw_status, wcqe), + wcqe->total_data_placed, wcqe->parameter, + wcqe->word3); + } + + /* Look up the FCP command IOCB and create pseudo response IOCB */ + spin_lock_irqsave(&pring->ring_lock, iflags); + pring->stats.iocb_event++; + cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring, + bf_get(lpfc_wcqe_c_request_tag, wcqe)); + spin_unlock_irqrestore(&pring->ring_lock, iflags); + if (unlikely(!cmdiocbq)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0374 FCP complete with no corresponding " + "cmdiocb: iotag (%d)\n", + bf_get(lpfc_wcqe_c_request_tag, wcqe)); + return; + } + if (unlikely(!cmdiocbq->iocb_cmpl)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0375 FCP cmdiocb not callback function " + "iotag: (%d)\n", + bf_get(lpfc_wcqe_c_request_tag, wcqe)); + return; + } + + /* Fake the irspiocb and copy necessary response information */ + lpfc_sli4_iocb_param_transfer(phba, &irspiocbq, cmdiocbq, wcqe); + + if (cmdiocbq->iocb_flag & LPFC_DRIVER_ABORTED) { + spin_lock_irqsave(&phba->hbalock, iflags); + cmdiocbq->iocb_flag &= ~LPFC_DRIVER_ABORTED; + spin_unlock_irqrestore(&phba->hbalock, iflags); + } + + /* Pass the cmd_iocb and the rsp state to the upper layer */ + (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq); +} + +/** + * lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event + * @phba: Pointer to HBA context object. + * @cq: Pointer to completion queue. + * @wcqe: Pointer to work-queue completion queue entry. + * + * This routine handles an fast-path WQ entry comsumed event by invoking the + * proper WQ release routine to the slow-path WQ. + **/ +static void +lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, + struct lpfc_wcqe_release *wcqe) +{ + struct lpfc_queue *childwq; + bool wqid_matched = false; + uint16_t fcp_wqid; + + /* Check for fast-path FCP work queue release */ + fcp_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe); + list_for_each_entry(childwq, &cq->child_list, list) { + if (childwq->queue_id == fcp_wqid) { + lpfc_sli4_wq_release(childwq, + bf_get(lpfc_wcqe_r_wqe_index, wcqe)); + wqid_matched = true; + break; + } + } + /* Report warning log message if no match found */ + if (wqid_matched != true) + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "2580 Fast-path wqe consume event carries " + "miss-matched qid: wcqe-qid=x%x\n", fcp_wqid); +} + +/** + * lpfc_sli4_fp_handle_wcqe - Process fast-path work queue completion entry + * @cq: Pointer to the completion queue. + * @eqe: Pointer to fast-path completion queue entry. + * + * This routine process a fast-path work queue completion entry from fast-path + * event queue for FCP command response completion. + **/ +static int +lpfc_sli4_fp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq, + struct lpfc_cqe *cqe) +{ + struct lpfc_wcqe_release wcqe; + bool workposted = false; + + /* Copy the work queue CQE and convert endian order if needed */ + lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe)); + + /* Check and process for different type of WCQE and dispatch */ + switch (bf_get(lpfc_wcqe_c_code, &wcqe)) { + case CQE_CODE_COMPL_WQE: + cq->CQ_wq++; + /* Process the WQ complete event */ + phba->last_completion_time = jiffies; + lpfc_sli4_fp_handle_fcp_wcqe(phba, cq, + (struct lpfc_wcqe_complete *)&wcqe); + break; + case CQE_CODE_RELEASE_WQE: + cq->CQ_release_wqe++; + /* Process the WQ release event */ + lpfc_sli4_fp_handle_rel_wcqe(phba, cq, + (struct lpfc_wcqe_release *)&wcqe); + break; + case CQE_CODE_XRI_ABORTED: + cq->CQ_xri_aborted++; + /* Process the WQ XRI abort event */ + phba->last_completion_time = jiffies; + workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq, + (struct sli4_wcqe_xri_aborted *)&wcqe); + break; + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0144 Not a valid WCQE code: x%x\n", + bf_get(lpfc_wcqe_c_code, &wcqe)); + break; + } + return workposted; +} + +/** + * lpfc_sli4_hba_handle_eqe - Process a fast-path event queue entry + * @phba: Pointer to HBA context object. + * @eqe: Pointer to fast-path event queue entry. + * + * This routine process a event queue entry from the fast-path event queue. + * It will check the MajorCode and MinorCode to determine this is for a + * completion event on a completion queue, if not, an error shall be logged + * and just return. Otherwise, it will get to the corresponding completion + * queue and process all the entries on the completion queue, rearm the + * completion queue, and then return. + **/ +static void +lpfc_sli4_hba_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe, + uint32_t qidx) +{ + struct lpfc_queue *cq; + struct lpfc_cqe *cqe; + bool workposted = false; + uint16_t cqid; + int ecount = 0; + + if (unlikely(bf_get_le32(lpfc_eqe_major_code, eqe) != 0)) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0366 Not a valid completion " + "event: majorcode=x%x, minorcode=x%x\n", + bf_get_le32(lpfc_eqe_major_code, eqe), + bf_get_le32(lpfc_eqe_minor_code, eqe)); + return; + } + + /* Get the reference to the corresponding CQ */ + cqid = bf_get_le32(lpfc_eqe_resource_id, eqe); + + /* Check if this is a Slow path event */ + if (unlikely(cqid != phba->sli4_hba.fcp_cq_map[qidx])) { + lpfc_sli4_sp_handle_eqe(phba, eqe, + phba->sli4_hba.hba_eq[qidx]); + return; + } + + if (unlikely(!phba->sli4_hba.fcp_cq)) { + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "3146 Fast-path completion queues " + "does not exist\n"); + return; + } + cq = phba->sli4_hba.fcp_cq[qidx]; + if (unlikely(!cq)) { + if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0367 Fast-path completion queue " + "(%d) does not exist\n", qidx); + return; + } + + if (unlikely(cqid != cq->queue_id)) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0368 Miss-matched fast-path completion " + "queue identifier: eqcqid=%d, fcpcqid=%d\n", + cqid, cq->queue_id); + return; + } + + /* Process all the entries to the CQ */ + while ((cqe = lpfc_sli4_cq_get(cq))) { + workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, cqe); + if (!(++ecount % cq->entry_repost)) + lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); + } + + /* Track the max number of CQEs processed in 1 EQ */ + if (ecount > cq->CQ_max_cqe) + cq->CQ_max_cqe = ecount; + + /* Catch the no cq entry condition */ + if (unlikely(ecount == 0)) + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0369 No entry from fast-path completion " + "queue fcpcqid=%d\n", cq->queue_id); + + /* In any case, flash and re-arm the CQ */ + lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM); + + /* wake up worker thread if there are works to be done */ + if (workposted) + lpfc_worker_wake_up(phba); +} + +static void +lpfc_sli4_eq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq) +{ + struct lpfc_eqe *eqe; + + /* walk all the EQ entries and drop on the floor */ + while ((eqe = lpfc_sli4_eq_get(eq))) + ; + + /* Clear and re-arm the EQ */ + lpfc_sli4_eq_release(eq, LPFC_QUEUE_REARM); +} + + +/** + * lpfc_sli4_fof_handle_eqe - Process a Flash Optimized Fabric event queue + * entry + * @phba: Pointer to HBA context object. + * @eqe: Pointer to fast-path event queue entry. + * + * This routine process a event queue entry from the Flash Optimized Fabric + * event queue. It will check the MajorCode and MinorCode to determine this + * is for a completion event on a completion queue, if not, an error shall be + * logged and just return. Otherwise, it will get to the corresponding + * completion queue and process all the entries on the completion queue, rearm + * the completion queue, and then return. + **/ +static void +lpfc_sli4_fof_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe) +{ + struct lpfc_queue *cq; + struct lpfc_cqe *cqe; + bool workposted = false; + uint16_t cqid; + int ecount = 0; + + if (unlikely(bf_get_le32(lpfc_eqe_major_code, eqe) != 0)) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "9147 Not a valid completion " + "event: majorcode=x%x, minorcode=x%x\n", + bf_get_le32(lpfc_eqe_major_code, eqe), + bf_get_le32(lpfc_eqe_minor_code, eqe)); + return; + } + + /* Get the reference to the corresponding CQ */ + cqid = bf_get_le32(lpfc_eqe_resource_id, eqe); + + /* Next check for OAS */ + cq = phba->sli4_hba.oas_cq; + if (unlikely(!cq)) { + if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "9148 OAS completion queue " + "does not exist\n"); + return; + } + + if (unlikely(cqid != cq->queue_id)) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "9149 Miss-matched fast-path compl " + "queue id: eqcqid=%d, fcpcqid=%d\n", + cqid, cq->queue_id); + return; + } + + /* Process all the entries to the OAS CQ */ + while ((cqe = lpfc_sli4_cq_get(cq))) { + workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, cqe); + if (!(++ecount % cq->entry_repost)) + lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); + } + + /* Track the max number of CQEs processed in 1 EQ */ + if (ecount > cq->CQ_max_cqe) + cq->CQ_max_cqe = ecount; + + /* Catch the no cq entry condition */ + if (unlikely(ecount == 0)) + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "9153 No entry from fast-path completion " + "queue fcpcqid=%d\n", cq->queue_id); + + /* In any case, flash and re-arm the CQ */ + lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM); + + /* wake up worker thread if there are works to be done */ + if (workposted) + lpfc_worker_wake_up(phba); +} + +/** + * lpfc_sli4_fof_intr_handler - HBA interrupt handler to SLI-4 device + * @irq: Interrupt number. + * @dev_id: The device context pointer. + * + * This function is directly called from the PCI layer as an interrupt + * service routine when device with SLI-4 interface spec is enabled with + * MSI-X multi-message interrupt mode and there is a Flash Optimized Fabric + * IOCB ring event in the HBA. However, when the device is enabled with either + * MSI or Pin-IRQ interrupt mode, this function is called as part of the + * device-level interrupt handler. When the PCI slot is in error recovery + * or the HBA is undergoing initialization, the interrupt handler will not + * process the interrupt. The Flash Optimized Fabric ring event are handled in + * the intrrupt context. This function is called without any lock held. + * It gets the hbalock to access and update SLI data structures. Note that, + * the EQ to CQ are one-to-one map such that the EQ index is + * equal to that of CQ index. + * + * This function returns IRQ_HANDLED when interrupt is handled else it + * returns IRQ_NONE. + **/ +irqreturn_t +lpfc_sli4_fof_intr_handler(int irq, void *dev_id) +{ + struct lpfc_hba *phba; + struct lpfc_fcp_eq_hdl *fcp_eq_hdl; + struct lpfc_queue *eq; + struct lpfc_eqe *eqe; + unsigned long iflag; + int ecount = 0; + uint32_t eqidx; + + /* Get the driver's phba structure from the dev_id */ + fcp_eq_hdl = (struct lpfc_fcp_eq_hdl *)dev_id; + phba = fcp_eq_hdl->phba; + eqidx = fcp_eq_hdl->idx; + + if (unlikely(!phba)) + return IRQ_NONE; + + /* Get to the EQ struct associated with this vector */ + eq = phba->sli4_hba.fof_eq; + if (unlikely(!eq)) + return IRQ_NONE; + + /* Check device state for handling interrupt */ + if (unlikely(lpfc_intr_state_check(phba))) { + eq->EQ_badstate++; + /* Check again for link_state with lock held */ + spin_lock_irqsave(&phba->hbalock, iflag); + if (phba->link_state < LPFC_LINK_DOWN) + /* Flush, clear interrupt, and rearm the EQ */ + lpfc_sli4_eq_flush(phba, eq); + spin_unlock_irqrestore(&phba->hbalock, iflag); + return IRQ_NONE; + } + + /* + * Process all the event on FCP fast-path EQ + */ + while ((eqe = lpfc_sli4_eq_get(eq))) { + lpfc_sli4_fof_handle_eqe(phba, eqe); + if (!(++ecount % eq->entry_repost)) + lpfc_sli4_eq_release(eq, LPFC_QUEUE_NOARM); + eq->EQ_processed++; + } + + /* Track the max number of EQEs processed in 1 intr */ + if (ecount > eq->EQ_max_eqe) + eq->EQ_max_eqe = ecount; + + + if (unlikely(ecount == 0)) { + eq->EQ_no_entry++; + + if (phba->intr_type == MSIX) + /* MSI-X treated interrupt served as no EQ share INT */ + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "9145 MSI-X interrupt with no EQE\n"); + else { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "9146 ISR interrupt with no EQE\n"); + /* Non MSI-X treated on interrupt as EQ share INT */ + return IRQ_NONE; + } + } + /* Always clear and re-arm the fast-path EQ */ + lpfc_sli4_eq_release(eq, LPFC_QUEUE_REARM); + return IRQ_HANDLED; +} + +/** + * lpfc_sli4_hba_intr_handler - HBA interrupt handler to SLI-4 device + * @irq: Interrupt number. + * @dev_id: The device context pointer. + * + * This function is directly called from the PCI layer as an interrupt + * service routine when device with SLI-4 interface spec is enabled with + * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB + * ring event in the HBA. However, when the device is enabled with either + * MSI or Pin-IRQ interrupt mode, this function is called as part of the + * device-level interrupt handler. When the PCI slot is in error recovery + * or the HBA is undergoing initialization, the interrupt handler will not + * process the interrupt. The SCSI FCP fast-path ring event are handled in + * the intrrupt context. This function is called without any lock held. + * It gets the hbalock to access and update SLI data structures. Note that, + * the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is + * equal to that of FCP CQ index. + * + * The link attention and ELS ring attention events are handled + * by the worker thread. The interrupt handler signals the worker thread + * and returns for these events. This function is called without any lock + * held. It gets the hbalock to access and update SLI data structures. + * + * This function returns IRQ_HANDLED when interrupt is handled else it + * returns IRQ_NONE. + **/ +irqreturn_t +lpfc_sli4_hba_intr_handler(int irq, void *dev_id) +{ + struct lpfc_hba *phba; + struct lpfc_fcp_eq_hdl *fcp_eq_hdl; + struct lpfc_queue *fpeq; + struct lpfc_eqe *eqe; + unsigned long iflag; + int ecount = 0; + int fcp_eqidx; + + /* Get the driver's phba structure from the dev_id */ + fcp_eq_hdl = (struct lpfc_fcp_eq_hdl *)dev_id; + phba = fcp_eq_hdl->phba; + fcp_eqidx = fcp_eq_hdl->idx; + + if (unlikely(!phba)) + return IRQ_NONE; + if (unlikely(!phba->sli4_hba.hba_eq)) + return IRQ_NONE; + + /* Get to the EQ struct associated with this vector */ + fpeq = phba->sli4_hba.hba_eq[fcp_eqidx]; + if (unlikely(!fpeq)) + return IRQ_NONE; + + if (lpfc_fcp_look_ahead) { + if (atomic_dec_and_test(&fcp_eq_hdl->fcp_eq_in_use)) + lpfc_sli4_eq_clr_intr(fpeq); + else { + atomic_inc(&fcp_eq_hdl->fcp_eq_in_use); + return IRQ_NONE; + } + } + + /* Check device state for handling interrupt */ + if (unlikely(lpfc_intr_state_check(phba))) { + fpeq->EQ_badstate++; + /* Check again for link_state with lock held */ + spin_lock_irqsave(&phba->hbalock, iflag); + if (phba->link_state < LPFC_LINK_DOWN) + /* Flush, clear interrupt, and rearm the EQ */ + lpfc_sli4_eq_flush(phba, fpeq); + spin_unlock_irqrestore(&phba->hbalock, iflag); + if (lpfc_fcp_look_ahead) + atomic_inc(&fcp_eq_hdl->fcp_eq_in_use); + return IRQ_NONE; + } + + /* + * Process all the event on FCP fast-path EQ + */ + while ((eqe = lpfc_sli4_eq_get(fpeq))) { + if (eqe == NULL) + break; + + lpfc_sli4_hba_handle_eqe(phba, eqe, fcp_eqidx); + if (!(++ecount % fpeq->entry_repost)) + lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM); + fpeq->EQ_processed++; + } + + /* Track the max number of EQEs processed in 1 intr */ + if (ecount > fpeq->EQ_max_eqe) + fpeq->EQ_max_eqe = ecount; + + /* Always clear and re-arm the fast-path EQ */ + lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM); + + if (unlikely(ecount == 0)) { + fpeq->EQ_no_entry++; + + if (lpfc_fcp_look_ahead) { + atomic_inc(&fcp_eq_hdl->fcp_eq_in_use); + return IRQ_NONE; + } + + if (phba->intr_type == MSIX) + /* MSI-X treated interrupt served as no EQ share INT */ + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "0358 MSI-X interrupt with no EQE\n"); + else + /* Non MSI-X treated on interrupt as EQ share INT */ + return IRQ_NONE; + } + + if (lpfc_fcp_look_ahead) + atomic_inc(&fcp_eq_hdl->fcp_eq_in_use); + return IRQ_HANDLED; +} /* lpfc_sli4_fp_intr_handler */ + +/** + * lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device + * @irq: Interrupt number. + * @dev_id: The device context pointer. + * + * This function is the device-level interrupt handler to device with SLI-4 + * interface spec, called from the PCI layer when either MSI or Pin-IRQ + * interrupt mode is enabled and there is an event in the HBA which requires + * driver attention. This function invokes the slow-path interrupt attention + * handling function and fast-path interrupt attention handling function in + * turn to process the relevant HBA attention events. This function is called + * without any lock held. It gets the hbalock to access and update SLI data + * structures. + * + * This function returns IRQ_HANDLED when interrupt is handled, else it + * returns IRQ_NONE. + **/ +irqreturn_t +lpfc_sli4_intr_handler(int irq, void *dev_id) +{ + struct lpfc_hba *phba; + irqreturn_t hba_irq_rc; + bool hba_handled = false; + int fcp_eqidx; + + /* Get the driver's phba structure from the dev_id */ + phba = (struct lpfc_hba *)dev_id; + + if (unlikely(!phba)) + return IRQ_NONE; + + /* + * Invoke fast-path host attention interrupt handling as appropriate. + */ + for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_io_channel; fcp_eqidx++) { + hba_irq_rc = lpfc_sli4_hba_intr_handler(irq, + &phba->sli4_hba.fcp_eq_hdl[fcp_eqidx]); + if (hba_irq_rc == IRQ_HANDLED) + hba_handled |= true; + } + + if (phba->cfg_fof) { + hba_irq_rc = lpfc_sli4_fof_intr_handler(irq, + &phba->sli4_hba.fcp_eq_hdl[0]); + if (hba_irq_rc == IRQ_HANDLED) + hba_handled |= true; + } + + return (hba_handled == true) ? IRQ_HANDLED : IRQ_NONE; +} /* lpfc_sli4_intr_handler */ + +/** + * lpfc_sli4_queue_free - free a queue structure and associated memory + * @queue: The queue structure to free. + * + * This function frees a queue structure and the DMAable memory used for + * the host resident queue. This function must be called after destroying the + * queue on the HBA. + **/ +void +lpfc_sli4_queue_free(struct lpfc_queue *queue) +{ + struct lpfc_dmabuf *dmabuf; + + if (!queue) + return; + + while (!list_empty(&queue->page_list)) { + list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf, + list); + dma_free_coherent(&queue->phba->pcidev->dev, SLI4_PAGE_SIZE, + dmabuf->virt, dmabuf->phys); + kfree(dmabuf); + } + kfree(queue); + return; +} + +/** + * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure + * @phba: The HBA that this queue is being created on. + * @entry_size: The size of each queue entry for this queue. + * @entry count: The number of entries that this queue will handle. + * + * This function allocates a queue structure and the DMAable memory used for + * the host resident queue. This function must be called before creating the + * queue on the HBA. + **/ +struct lpfc_queue * +lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t entry_size, + uint32_t entry_count) +{ + struct lpfc_queue *queue; + struct lpfc_dmabuf *dmabuf; + int x, total_qe_count; + void *dma_pointer; + uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz; + + if (!phba->sli4_hba.pc_sli4_params.supported) + hw_page_size = SLI4_PAGE_SIZE; + + queue = kzalloc(sizeof(struct lpfc_queue) + + (sizeof(union sli4_qe) * entry_count), GFP_KERNEL); + if (!queue) + return NULL; + queue->page_count = (ALIGN(entry_size * entry_count, + hw_page_size))/hw_page_size; + INIT_LIST_HEAD(&queue->list); + INIT_LIST_HEAD(&queue->page_list); + INIT_LIST_HEAD(&queue->child_list); + for (x = 0, total_qe_count = 0; x < queue->page_count; x++) { + dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); + if (!dmabuf) + goto out_fail; + dmabuf->virt = dma_zalloc_coherent(&phba->pcidev->dev, + hw_page_size, &dmabuf->phys, + GFP_KERNEL); + if (!dmabuf->virt) { + kfree(dmabuf); + goto out_fail; + } + dmabuf->buffer_tag = x; + list_add_tail(&dmabuf->list, &queue->page_list); + /* initialize queue's entry array */ + dma_pointer = dmabuf->virt; + for (; total_qe_count < entry_count && + dma_pointer < (hw_page_size + dmabuf->virt); + total_qe_count++, dma_pointer += entry_size) { + queue->qe[total_qe_count].address = dma_pointer; + } + } + queue->entry_size = entry_size; + queue->entry_count = entry_count; + + /* + * entry_repost is calculated based on the number of entries in the + * queue. This works out except for RQs. If buffers are NOT initially + * posted for every RQE, entry_repost should be adjusted accordingly. + */ + queue->entry_repost = (entry_count >> 3); + if (queue->entry_repost < LPFC_QUEUE_MIN_REPOST) + queue->entry_repost = LPFC_QUEUE_MIN_REPOST; + queue->phba = phba; + + return queue; +out_fail: + lpfc_sli4_queue_free(queue); + return NULL; +} + +/** + * lpfc_dual_chute_pci_bar_map - Map pci base address register to host memory + * @phba: HBA structure that indicates port to create a queue on. + * @pci_barset: PCI BAR set flag. + * + * This function shall perform iomap of the specified PCI BAR address to host + * memory address if not already done so and return it. The returned host + * memory address can be NULL. + */ +static void __iomem * +lpfc_dual_chute_pci_bar_map(struct lpfc_hba *phba, uint16_t pci_barset) +{ + struct pci_dev *pdev; + + if (!phba->pcidev) + return NULL; + else + pdev = phba->pcidev; + + switch (pci_barset) { + case WQ_PCI_BAR_0_AND_1: + return phba->pci_bar0_memmap_p; + case WQ_PCI_BAR_2_AND_3: + return phba->pci_bar2_memmap_p; + case WQ_PCI_BAR_4_AND_5: + return phba->pci_bar4_memmap_p; + default: + break; + } + return NULL; +} + +/** + * lpfc_modify_fcp_eq_delay - Modify Delay Multiplier on FCP EQs + * @phba: HBA structure that indicates port to create a queue on. + * @startq: The starting FCP EQ to modify + * + * This function sends an MODIFY_EQ_DELAY mailbox command to the HBA. + * + * The @phba struct is used to send mailbox command to HBA. The @startq + * is used to get the starting FCP EQ to change. + * This function is asynchronous and will wait for the mailbox + * command to finish before continuing. + * + * On success this function will return a zero. If unable to allocate enough + * memory this function will return -ENOMEM. If the queue create mailbox command + * fails this function will return -ENXIO. + **/ +int +lpfc_modify_fcp_eq_delay(struct lpfc_hba *phba, uint32_t startq) +{ + struct lpfc_mbx_modify_eq_delay *eq_delay; + LPFC_MBOXQ_t *mbox; + struct lpfc_queue *eq; + int cnt, rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + uint32_t result; + int fcp_eqidx; + union lpfc_sli4_cfg_shdr *shdr; + uint16_t dmult; + + if (startq >= phba->cfg_fcp_io_channel) + return 0; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_modify_eq_delay) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_MODIFY_EQ_DELAY, + length, LPFC_SLI4_MBX_EMBED); + eq_delay = &mbox->u.mqe.un.eq_delay; + + /* Calculate delay multiper from maximum interrupt per second */ + result = phba->cfg_fcp_imax / phba->cfg_fcp_io_channel; + if (result > LPFC_DMULT_CONST) + dmult = 0; + else + dmult = LPFC_DMULT_CONST/result - 1; + + cnt = 0; + for (fcp_eqidx = startq; fcp_eqidx < phba->cfg_fcp_io_channel; + fcp_eqidx++) { + eq = phba->sli4_hba.hba_eq[fcp_eqidx]; + if (!eq) + continue; + eq_delay->u.request.eq[cnt].eq_id = eq->queue_id; + eq_delay->u.request.eq[cnt].phase = 0; + eq_delay->u.request.eq[cnt].delay_multi = dmult; + cnt++; + if (cnt >= LPFC_MAX_EQ_DELAY) + break; + } + eq_delay->u.request.num_eq = cnt; + + mbox->vport = phba->pport; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + mbox->context1 = NULL; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + shdr = (union lpfc_sli4_cfg_shdr *) &eq_delay->header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2512 MODIFY_EQ_DELAY mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + } + mempool_free(mbox, phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_eq_create - Create an Event Queue on the HBA + * @phba: HBA structure that indicates port to create a queue on. + * @eq: The queue structure to use to create the event queue. + * @imax: The maximum interrupt per second limit. + * + * This function creates an event queue, as detailed in @eq, on a port, + * described by @phba by sending an EQ_CREATE mailbox command to the HBA. + * + * The @phba struct is used to send mailbox command to HBA. The @eq struct + * is used to get the entry count and entry size that are necessary to + * determine the number of pages to allocate and use for this queue. This + * function will send the EQ_CREATE mailbox command to the HBA to setup the + * event queue. This function is asynchronous and will wait for the mailbox + * command to finish before continuing. + * + * On success this function will return a zero. If unable to allocate enough + * memory this function will return -ENOMEM. If the queue create mailbox command + * fails this function will return -ENXIO. + **/ +int +lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint32_t imax) +{ + struct lpfc_mbx_eq_create *eq_create; + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + struct lpfc_dmabuf *dmabuf; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + uint16_t dmult; + uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz; + + /* sanity check on queue memory */ + if (!eq) + return -ENODEV; + if (!phba->sli4_hba.pc_sli4_params.supported) + hw_page_size = SLI4_PAGE_SIZE; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_eq_create) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_EQ_CREATE, + length, LPFC_SLI4_MBX_EMBED); + eq_create = &mbox->u.mqe.un.eq_create; + bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request, + eq->page_count); + bf_set(lpfc_eq_context_size, &eq_create->u.request.context, + LPFC_EQE_SIZE); + bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1); + /* don't setup delay multiplier using EQ_CREATE */ + dmult = 0; + bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context, + dmult); + switch (eq->entry_count) { + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0360 Unsupported EQ count. (%d)\n", + eq->entry_count); + if (eq->entry_count < 256) + return -EINVAL; + /* otherwise default to smallest count (drop through) */ + case 256: + bf_set(lpfc_eq_context_count, &eq_create->u.request.context, + LPFC_EQ_CNT_256); + break; + case 512: + bf_set(lpfc_eq_context_count, &eq_create->u.request.context, + LPFC_EQ_CNT_512); + break; + case 1024: + bf_set(lpfc_eq_context_count, &eq_create->u.request.context, + LPFC_EQ_CNT_1024); + break; + case 2048: + bf_set(lpfc_eq_context_count, &eq_create->u.request.context, + LPFC_EQ_CNT_2048); + break; + case 4096: + bf_set(lpfc_eq_context_count, &eq_create->u.request.context, + LPFC_EQ_CNT_4096); + break; + } + list_for_each_entry(dmabuf, &eq->page_list, list) { + memset(dmabuf->virt, 0, hw_page_size); + eq_create->u.request.page[dmabuf->buffer_tag].addr_lo = + putPaddrLow(dmabuf->phys); + eq_create->u.request.page[dmabuf->buffer_tag].addr_hi = + putPaddrHigh(dmabuf->phys); + } + mbox->vport = phba->pport; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + mbox->context1 = NULL; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2500 EQ_CREATE mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + } + eq->type = LPFC_EQ; + eq->subtype = LPFC_NONE; + eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response); + if (eq->queue_id == 0xFFFF) + status = -ENXIO; + eq->host_index = 0; + eq->hba_index = 0; + + mempool_free(mbox, phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_cq_create - Create a Completion Queue on the HBA + * @phba: HBA structure that indicates port to create a queue on. + * @cq: The queue structure to use to create the completion queue. + * @eq: The event queue to bind this completion queue to. + * + * This function creates a completion queue, as detailed in @wq, on a port, + * described by @phba by sending a CQ_CREATE mailbox command to the HBA. + * + * The @phba struct is used to send mailbox command to HBA. The @cq struct + * is used to get the entry count and entry size that are necessary to + * determine the number of pages to allocate and use for this queue. The @eq + * is used to indicate which event queue to bind this completion queue to. This + * function will send the CQ_CREATE mailbox command to the HBA to setup the + * completion queue. This function is asynchronous and will wait for the mailbox + * command to finish before continuing. + * + * On success this function will return a zero. If unable to allocate enough + * memory this function will return -ENOMEM. If the queue create mailbox command + * fails this function will return -ENXIO. + **/ +int +lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq, + struct lpfc_queue *eq, uint32_t type, uint32_t subtype) +{ + struct lpfc_mbx_cq_create *cq_create; + struct lpfc_dmabuf *dmabuf; + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz; + + /* sanity check on queue memory */ + if (!cq || !eq) + return -ENODEV; + if (!phba->sli4_hba.pc_sli4_params.supported) + hw_page_size = SLI4_PAGE_SIZE; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_cq_create) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_CQ_CREATE, + length, LPFC_SLI4_MBX_EMBED); + cq_create = &mbox->u.mqe.un.cq_create; + shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr; + bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request, + cq->page_count); + bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1); + bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1); + bf_set(lpfc_mbox_hdr_version, &shdr->request, + phba->sli4_hba.pc_sli4_params.cqv); + if (phba->sli4_hba.pc_sli4_params.cqv == LPFC_Q_CREATE_VERSION_2) { + /* FW only supports 1. Should be PAGE_SIZE/SLI4_PAGE_SIZE */ + bf_set(lpfc_mbx_cq_create_page_size, &cq_create->u.request, 1); + bf_set(lpfc_cq_eq_id_2, &cq_create->u.request.context, + eq->queue_id); + } else { + bf_set(lpfc_cq_eq_id, &cq_create->u.request.context, + eq->queue_id); + } + switch (cq->entry_count) { + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0361 Unsupported CQ count. (%d)\n", + cq->entry_count); + if (cq->entry_count < 256) { + status = -EINVAL; + goto out; + } + /* otherwise default to smallest count (drop through) */ + case 256: + bf_set(lpfc_cq_context_count, &cq_create->u.request.context, + LPFC_CQ_CNT_256); + break; + case 512: + bf_set(lpfc_cq_context_count, &cq_create->u.request.context, + LPFC_CQ_CNT_512); + break; + case 1024: + bf_set(lpfc_cq_context_count, &cq_create->u.request.context, + LPFC_CQ_CNT_1024); + break; + } + list_for_each_entry(dmabuf, &cq->page_list, list) { + memset(dmabuf->virt, 0, hw_page_size); + cq_create->u.request.page[dmabuf->buffer_tag].addr_lo = + putPaddrLow(dmabuf->phys); + cq_create->u.request.page[dmabuf->buffer_tag].addr_hi = + putPaddrHigh(dmabuf->phys); + } + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2501 CQ_CREATE mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + goto out; + } + cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response); + if (cq->queue_id == 0xFFFF) { + status = -ENXIO; + goto out; + } + /* link the cq onto the parent eq child list */ + list_add_tail(&cq->list, &eq->child_list); + /* Set up completion queue's type and subtype */ + cq->type = type; + cq->subtype = subtype; + cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response); + cq->assoc_qid = eq->queue_id; + cq->host_index = 0; + cq->hba_index = 0; + +out: + mempool_free(mbox, phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_mq_create_fb_init - Send MCC_CREATE without async events registration + * @phba: HBA structure that indicates port to create a queue on. + * @mq: The queue structure to use to create the mailbox queue. + * @mbox: An allocated pointer to type LPFC_MBOXQ_t + * @cq: The completion queue to associate with this cq. + * + * This function provides failback (fb) functionality when the + * mq_create_ext fails on older FW generations. It's purpose is identical + * to mq_create_ext otherwise. + * + * This routine cannot fail as all attributes were previously accessed and + * initialized in mq_create_ext. + **/ +static void +lpfc_mq_create_fb_init(struct lpfc_hba *phba, struct lpfc_queue *mq, + LPFC_MBOXQ_t *mbox, struct lpfc_queue *cq) +{ + struct lpfc_mbx_mq_create *mq_create; + struct lpfc_dmabuf *dmabuf; + int length; + + length = (sizeof(struct lpfc_mbx_mq_create) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_MQ_CREATE, + length, LPFC_SLI4_MBX_EMBED); + mq_create = &mbox->u.mqe.un.mq_create; + bf_set(lpfc_mbx_mq_create_num_pages, &mq_create->u.request, + mq->page_count); + bf_set(lpfc_mq_context_cq_id, &mq_create->u.request.context, + cq->queue_id); + bf_set(lpfc_mq_context_valid, &mq_create->u.request.context, 1); + switch (mq->entry_count) { + case 16: + bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context, + LPFC_MQ_RING_SIZE_16); + break; + case 32: + bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context, + LPFC_MQ_RING_SIZE_32); + break; + case 64: + bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context, + LPFC_MQ_RING_SIZE_64); + break; + case 128: + bf_set(lpfc_mq_context_ring_size, &mq_create->u.request.context, + LPFC_MQ_RING_SIZE_128); + break; + } + list_for_each_entry(dmabuf, &mq->page_list, list) { + mq_create->u.request.page[dmabuf->buffer_tag].addr_lo = + putPaddrLow(dmabuf->phys); + mq_create->u.request.page[dmabuf->buffer_tag].addr_hi = + putPaddrHigh(dmabuf->phys); + } +} + +/** + * lpfc_mq_create - Create a mailbox Queue on the HBA + * @phba: HBA structure that indicates port to create a queue on. + * @mq: The queue structure to use to create the mailbox queue. + * @cq: The completion queue to associate with this cq. + * @subtype: The queue's subtype. + * + * This function creates a mailbox queue, as detailed in @mq, on a port, + * described by @phba by sending a MQ_CREATE mailbox command to the HBA. + * + * The @phba struct is used to send mailbox command to HBA. The @cq struct + * is used to get the entry count and entry size that are necessary to + * determine the number of pages to allocate and use for this queue. This + * function will send the MQ_CREATE mailbox command to the HBA to setup the + * mailbox queue. This function is asynchronous and will wait for the mailbox + * command to finish before continuing. + * + * On success this function will return a zero. If unable to allocate enough + * memory this function will return -ENOMEM. If the queue create mailbox command + * fails this function will return -ENXIO. + **/ +int32_t +lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq, + struct lpfc_queue *cq, uint32_t subtype) +{ + struct lpfc_mbx_mq_create *mq_create; + struct lpfc_mbx_mq_create_ext *mq_create_ext; + struct lpfc_dmabuf *dmabuf; + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz; + + /* sanity check on queue memory */ + if (!mq || !cq) + return -ENODEV; + if (!phba->sli4_hba.pc_sli4_params.supported) + hw_page_size = SLI4_PAGE_SIZE; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_mq_create_ext) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_MQ_CREATE_EXT, + length, LPFC_SLI4_MBX_EMBED); + + mq_create_ext = &mbox->u.mqe.un.mq_create_ext; + shdr = (union lpfc_sli4_cfg_shdr *) &mq_create_ext->header.cfg_shdr; + bf_set(lpfc_mbx_mq_create_ext_num_pages, + &mq_create_ext->u.request, mq->page_count); + bf_set(lpfc_mbx_mq_create_ext_async_evt_link, + &mq_create_ext->u.request, 1); + bf_set(lpfc_mbx_mq_create_ext_async_evt_fip, + &mq_create_ext->u.request, 1); + bf_set(lpfc_mbx_mq_create_ext_async_evt_group5, + &mq_create_ext->u.request, 1); + bf_set(lpfc_mbx_mq_create_ext_async_evt_fc, + &mq_create_ext->u.request, 1); + bf_set(lpfc_mbx_mq_create_ext_async_evt_sli, + &mq_create_ext->u.request, 1); + bf_set(lpfc_mq_context_valid, &mq_create_ext->u.request.context, 1); + bf_set(lpfc_mbox_hdr_version, &shdr->request, + phba->sli4_hba.pc_sli4_params.mqv); + if (phba->sli4_hba.pc_sli4_params.mqv == LPFC_Q_CREATE_VERSION_1) + bf_set(lpfc_mbx_mq_create_ext_cq_id, &mq_create_ext->u.request, + cq->queue_id); + else + bf_set(lpfc_mq_context_cq_id, &mq_create_ext->u.request.context, + cq->queue_id); + switch (mq->entry_count) { + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0362 Unsupported MQ count. (%d)\n", + mq->entry_count); + if (mq->entry_count < 16) { + status = -EINVAL; + goto out; + } + /* otherwise default to smallest count (drop through) */ + case 16: + bf_set(lpfc_mq_context_ring_size, + &mq_create_ext->u.request.context, + LPFC_MQ_RING_SIZE_16); + break; + case 32: + bf_set(lpfc_mq_context_ring_size, + &mq_create_ext->u.request.context, + LPFC_MQ_RING_SIZE_32); + break; + case 64: + bf_set(lpfc_mq_context_ring_size, + &mq_create_ext->u.request.context, + LPFC_MQ_RING_SIZE_64); + break; + case 128: + bf_set(lpfc_mq_context_ring_size, + &mq_create_ext->u.request.context, + LPFC_MQ_RING_SIZE_128); + break; + } + list_for_each_entry(dmabuf, &mq->page_list, list) { + memset(dmabuf->virt, 0, hw_page_size); + mq_create_ext->u.request.page[dmabuf->buffer_tag].addr_lo = + putPaddrLow(dmabuf->phys); + mq_create_ext->u.request.page[dmabuf->buffer_tag].addr_hi = + putPaddrHigh(dmabuf->phys); + } + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id, + &mq_create_ext->u.response); + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2795 MQ_CREATE_EXT failed with " + "status x%x. Failback to MQ_CREATE.\n", + rc); + lpfc_mq_create_fb_init(phba, mq, mbox, cq); + mq_create = &mbox->u.mqe.un.mq_create; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr; + mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id, + &mq_create->u.response); + } + + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2502 MQ_CREATE mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + goto out; + } + if (mq->queue_id == 0xFFFF) { + status = -ENXIO; + goto out; + } + mq->type = LPFC_MQ; + mq->assoc_qid = cq->queue_id; + mq->subtype = subtype; + mq->host_index = 0; + mq->hba_index = 0; + + /* link the mq onto the parent cq child list */ + list_add_tail(&mq->list, &cq->child_list); +out: + mempool_free(mbox, phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_wq_create - Create a Work Queue on the HBA + * @phba: HBA structure that indicates port to create a queue on. + * @wq: The queue structure to use to create the work queue. + * @cq: The completion queue to bind this work queue to. + * @subtype: The subtype of the work queue indicating its functionality. + * + * This function creates a work queue, as detailed in @wq, on a port, described + * by @phba by sending a WQ_CREATE mailbox command to the HBA. + * + * The @phba struct is used to send mailbox command to HBA. The @wq struct + * is used to get the entry count and entry size that are necessary to + * determine the number of pages to allocate and use for this queue. The @cq + * is used to indicate which completion queue to bind this work queue to. This + * function will send the WQ_CREATE mailbox command to the HBA to setup the + * work queue. This function is asynchronous and will wait for the mailbox + * command to finish before continuing. + * + * On success this function will return a zero. If unable to allocate enough + * memory this function will return -ENOMEM. If the queue create mailbox command + * fails this function will return -ENXIO. + **/ +int +lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq, + struct lpfc_queue *cq, uint32_t subtype) +{ + struct lpfc_mbx_wq_create *wq_create; + struct lpfc_dmabuf *dmabuf; + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz; + struct dma_address *page; + void __iomem *bar_memmap_p; + uint32_t db_offset; + uint16_t pci_barset; + + /* sanity check on queue memory */ + if (!wq || !cq) + return -ENODEV; + if (!phba->sli4_hba.pc_sli4_params.supported) + hw_page_size = SLI4_PAGE_SIZE; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_wq_create) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_WQ_CREATE, + length, LPFC_SLI4_MBX_EMBED); + wq_create = &mbox->u.mqe.un.wq_create; + shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr; + bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request, + wq->page_count); + bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request, + cq->queue_id); + + /* wqv is the earliest version supported, NOT the latest */ + bf_set(lpfc_mbox_hdr_version, &shdr->request, + phba->sli4_hba.pc_sli4_params.wqv); + + switch (phba->sli4_hba.pc_sli4_params.wqv) { + case LPFC_Q_CREATE_VERSION_0: + switch (wq->entry_size) { + default: + case 64: + /* Nothing to do, version 0 ONLY supports 64 byte */ + page = wq_create->u.request.page; + break; + case 128: + if (!(phba->sli4_hba.pc_sli4_params.wqsize & + LPFC_WQ_SZ128_SUPPORT)) { + status = -ERANGE; + goto out; + } + /* If we get here the HBA MUST also support V1 and + * we MUST use it + */ + bf_set(lpfc_mbox_hdr_version, &shdr->request, + LPFC_Q_CREATE_VERSION_1); + + bf_set(lpfc_mbx_wq_create_wqe_count, + &wq_create->u.request_1, wq->entry_count); + bf_set(lpfc_mbx_wq_create_wqe_size, + &wq_create->u.request_1, + LPFC_WQ_WQE_SIZE_128); + bf_set(lpfc_mbx_wq_create_page_size, + &wq_create->u.request_1, + (PAGE_SIZE/SLI4_PAGE_SIZE)); + page = wq_create->u.request_1.page; + break; + } + break; + case LPFC_Q_CREATE_VERSION_1: + bf_set(lpfc_mbx_wq_create_wqe_count, &wq_create->u.request_1, + wq->entry_count); + switch (wq->entry_size) { + default: + case 64: + bf_set(lpfc_mbx_wq_create_wqe_size, + &wq_create->u.request_1, + LPFC_WQ_WQE_SIZE_64); + break; + case 128: + if (!(phba->sli4_hba.pc_sli4_params.wqsize & + LPFC_WQ_SZ128_SUPPORT)) { + status = -ERANGE; + goto out; + } + bf_set(lpfc_mbx_wq_create_wqe_size, + &wq_create->u.request_1, + LPFC_WQ_WQE_SIZE_128); + break; + } + bf_set(lpfc_mbx_wq_create_page_size, &wq_create->u.request_1, + (PAGE_SIZE/SLI4_PAGE_SIZE)); + page = wq_create->u.request_1.page; + break; + default: + status = -ERANGE; + goto out; + } + + list_for_each_entry(dmabuf, &wq->page_list, list) { + memset(dmabuf->virt, 0, hw_page_size); + page[dmabuf->buffer_tag].addr_lo = putPaddrLow(dmabuf->phys); + page[dmabuf->buffer_tag].addr_hi = putPaddrHigh(dmabuf->phys); + } + + if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) + bf_set(lpfc_mbx_wq_create_dua, &wq_create->u.request, 1); + + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2503 WQ_CREATE mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + goto out; + } + wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id, &wq_create->u.response); + if (wq->queue_id == 0xFFFF) { + status = -ENXIO; + goto out; + } + if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) { + wq->db_format = bf_get(lpfc_mbx_wq_create_db_format, + &wq_create->u.response); + if ((wq->db_format != LPFC_DB_LIST_FORMAT) && + (wq->db_format != LPFC_DB_RING_FORMAT)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3265 WQ[%d] doorbell format not " + "supported: x%x\n", wq->queue_id, + wq->db_format); + status = -EINVAL; + goto out; + } + pci_barset = bf_get(lpfc_mbx_wq_create_bar_set, + &wq_create->u.response); + bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba, pci_barset); + if (!bar_memmap_p) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3263 WQ[%d] failed to memmap pci " + "barset:x%x\n", wq->queue_id, + pci_barset); + status = -ENOMEM; + goto out; + } + db_offset = wq_create->u.response.doorbell_offset; + if ((db_offset != LPFC_ULP0_WQ_DOORBELL) && + (db_offset != LPFC_ULP1_WQ_DOORBELL)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3252 WQ[%d] doorbell offset not " + "supported: x%x\n", wq->queue_id, + db_offset); + status = -EINVAL; + goto out; + } + wq->db_regaddr = bar_memmap_p + db_offset; + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "3264 WQ[%d]: barset:x%x, offset:x%x, " + "format:x%x\n", wq->queue_id, pci_barset, + db_offset, wq->db_format); + } else { + wq->db_format = LPFC_DB_LIST_FORMAT; + wq->db_regaddr = phba->sli4_hba.WQDBregaddr; + } + wq->type = LPFC_WQ; + wq->assoc_qid = cq->queue_id; + wq->subtype = subtype; + wq->host_index = 0; + wq->hba_index = 0; + wq->entry_repost = LPFC_RELEASE_NOTIFICATION_INTERVAL; + + /* link the wq onto the parent cq child list */ + list_add_tail(&wq->list, &cq->child_list); +out: + mempool_free(mbox, phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_rq_adjust_repost - Adjust entry_repost for an RQ + * @phba: HBA structure that indicates port to create a queue on. + * @rq: The queue structure to use for the receive queue. + * @qno: The associated HBQ number + * + * + * For SLI4 we need to adjust the RQ repost value based on + * the number of buffers that are initially posted to the RQ. + */ +void +lpfc_rq_adjust_repost(struct lpfc_hba *phba, struct lpfc_queue *rq, int qno) +{ + uint32_t cnt; + + /* sanity check on queue memory */ + if (!rq) + return; + cnt = lpfc_hbq_defs[qno]->entry_count; + + /* Recalc repost for RQs based on buffers initially posted */ + cnt = (cnt >> 3); + if (cnt < LPFC_QUEUE_MIN_REPOST) + cnt = LPFC_QUEUE_MIN_REPOST; + + rq->entry_repost = cnt; +} + +/** + * lpfc_rq_create - Create a Receive Queue on the HBA + * @phba: HBA structure that indicates port to create a queue on. + * @hrq: The queue structure to use to create the header receive queue. + * @drq: The queue structure to use to create the data receive queue. + * @cq: The completion queue to bind this work queue to. + * + * This function creates a receive buffer queue pair , as detailed in @hrq and + * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command + * to the HBA. + * + * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq + * struct is used to get the entry count that is necessary to determine the + * number of pages to use for this queue. The @cq is used to indicate which + * completion queue to bind received buffers that are posted to these queues to. + * This function will send the RQ_CREATE mailbox command to the HBA to setup the + * receive queue pair. This function is asynchronous and will wait for the + * mailbox command to finish before continuing. + * + * On success this function will return a zero. If unable to allocate enough + * memory this function will return -ENOMEM. If the queue create mailbox command + * fails this function will return -ENXIO. + **/ +int +lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq, + struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype) +{ + struct lpfc_mbx_rq_create *rq_create; + struct lpfc_dmabuf *dmabuf; + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + uint32_t hw_page_size = phba->sli4_hba.pc_sli4_params.if_page_sz; + void __iomem *bar_memmap_p; + uint32_t db_offset; + uint16_t pci_barset; + + /* sanity check on queue memory */ + if (!hrq || !drq || !cq) + return -ENODEV; + if (!phba->sli4_hba.pc_sli4_params.supported) + hw_page_size = SLI4_PAGE_SIZE; + + if (hrq->entry_count != drq->entry_count) + return -EINVAL; + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_rq_create) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, + length, LPFC_SLI4_MBX_EMBED); + rq_create = &mbox->u.mqe.un.rq_create; + shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr; + bf_set(lpfc_mbox_hdr_version, &shdr->request, + phba->sli4_hba.pc_sli4_params.rqv); + if (phba->sli4_hba.pc_sli4_params.rqv == LPFC_Q_CREATE_VERSION_1) { + bf_set(lpfc_rq_context_rqe_count_1, + &rq_create->u.request.context, + hrq->entry_count); + rq_create->u.request.context.buffer_size = LPFC_HDR_BUF_SIZE; + bf_set(lpfc_rq_context_rqe_size, + &rq_create->u.request.context, + LPFC_RQE_SIZE_8); + bf_set(lpfc_rq_context_page_size, + &rq_create->u.request.context, + (PAGE_SIZE/SLI4_PAGE_SIZE)); + } else { + switch (hrq->entry_count) { + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2535 Unsupported RQ count. (%d)\n", + hrq->entry_count); + if (hrq->entry_count < 512) { + status = -EINVAL; + goto out; + } + /* otherwise default to smallest count (drop through) */ + case 512: + bf_set(lpfc_rq_context_rqe_count, + &rq_create->u.request.context, + LPFC_RQ_RING_SIZE_512); + break; + case 1024: + bf_set(lpfc_rq_context_rqe_count, + &rq_create->u.request.context, + LPFC_RQ_RING_SIZE_1024); + break; + case 2048: + bf_set(lpfc_rq_context_rqe_count, + &rq_create->u.request.context, + LPFC_RQ_RING_SIZE_2048); + break; + case 4096: + bf_set(lpfc_rq_context_rqe_count, + &rq_create->u.request.context, + LPFC_RQ_RING_SIZE_4096); + break; + } + bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context, + LPFC_HDR_BUF_SIZE); + } + bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context, + cq->queue_id); + bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request, + hrq->page_count); + list_for_each_entry(dmabuf, &hrq->page_list, list) { + memset(dmabuf->virt, 0, hw_page_size); + rq_create->u.request.page[dmabuf->buffer_tag].addr_lo = + putPaddrLow(dmabuf->phys); + rq_create->u.request.page[dmabuf->buffer_tag].addr_hi = + putPaddrHigh(dmabuf->phys); + } + if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) + bf_set(lpfc_mbx_rq_create_dua, &rq_create->u.request, 1); + + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2504 RQ_CREATE mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + goto out; + } + hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response); + if (hrq->queue_id == 0xFFFF) { + status = -ENXIO; + goto out; + } + + if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) { + hrq->db_format = bf_get(lpfc_mbx_rq_create_db_format, + &rq_create->u.response); + if ((hrq->db_format != LPFC_DB_LIST_FORMAT) && + (hrq->db_format != LPFC_DB_RING_FORMAT)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3262 RQ [%d] doorbell format not " + "supported: x%x\n", hrq->queue_id, + hrq->db_format); + status = -EINVAL; + goto out; + } + + pci_barset = bf_get(lpfc_mbx_rq_create_bar_set, + &rq_create->u.response); + bar_memmap_p = lpfc_dual_chute_pci_bar_map(phba, pci_barset); + if (!bar_memmap_p) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3269 RQ[%d] failed to memmap pci " + "barset:x%x\n", hrq->queue_id, + pci_barset); + status = -ENOMEM; + goto out; + } + + db_offset = rq_create->u.response.doorbell_offset; + if ((db_offset != LPFC_ULP0_RQ_DOORBELL) && + (db_offset != LPFC_ULP1_RQ_DOORBELL)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3270 RQ[%d] doorbell offset not " + "supported: x%x\n", hrq->queue_id, + db_offset); + status = -EINVAL; + goto out; + } + hrq->db_regaddr = bar_memmap_p + db_offset; + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "3266 RQ[qid:%d]: barset:x%x, offset:x%x, " + "format:x%x\n", hrq->queue_id, pci_barset, + db_offset, hrq->db_format); + } else { + hrq->db_format = LPFC_DB_RING_FORMAT; + hrq->db_regaddr = phba->sli4_hba.RQDBregaddr; + } + hrq->type = LPFC_HRQ; + hrq->assoc_qid = cq->queue_id; + hrq->subtype = subtype; + hrq->host_index = 0; + hrq->hba_index = 0; + + /* now create the data queue */ + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_RQ_CREATE, + length, LPFC_SLI4_MBX_EMBED); + bf_set(lpfc_mbox_hdr_version, &shdr->request, + phba->sli4_hba.pc_sli4_params.rqv); + if (phba->sli4_hba.pc_sli4_params.rqv == LPFC_Q_CREATE_VERSION_1) { + bf_set(lpfc_rq_context_rqe_count_1, + &rq_create->u.request.context, hrq->entry_count); + rq_create->u.request.context.buffer_size = LPFC_DATA_BUF_SIZE; + bf_set(lpfc_rq_context_rqe_size, &rq_create->u.request.context, + LPFC_RQE_SIZE_8); + bf_set(lpfc_rq_context_page_size, &rq_create->u.request.context, + (PAGE_SIZE/SLI4_PAGE_SIZE)); + } else { + switch (drq->entry_count) { + default: + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2536 Unsupported RQ count. (%d)\n", + drq->entry_count); + if (drq->entry_count < 512) { + status = -EINVAL; + goto out; + } + /* otherwise default to smallest count (drop through) */ + case 512: + bf_set(lpfc_rq_context_rqe_count, + &rq_create->u.request.context, + LPFC_RQ_RING_SIZE_512); + break; + case 1024: + bf_set(lpfc_rq_context_rqe_count, + &rq_create->u.request.context, + LPFC_RQ_RING_SIZE_1024); + break; + case 2048: + bf_set(lpfc_rq_context_rqe_count, + &rq_create->u.request.context, + LPFC_RQ_RING_SIZE_2048); + break; + case 4096: + bf_set(lpfc_rq_context_rqe_count, + &rq_create->u.request.context, + LPFC_RQ_RING_SIZE_4096); + break; + } + bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context, + LPFC_DATA_BUF_SIZE); + } + bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context, + cq->queue_id); + bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request, + drq->page_count); + list_for_each_entry(dmabuf, &drq->page_list, list) { + rq_create->u.request.page[dmabuf->buffer_tag].addr_lo = + putPaddrLow(dmabuf->phys); + rq_create->u.request.page[dmabuf->buffer_tag].addr_hi = + putPaddrHigh(dmabuf->phys); + } + if (phba->sli4_hba.fw_func_mode & LPFC_DUA_MODE) + bf_set(lpfc_mbx_rq_create_dua, &rq_create->u.request, 1); + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + status = -ENXIO; + goto out; + } + drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response); + if (drq->queue_id == 0xFFFF) { + status = -ENXIO; + goto out; + } + drq->type = LPFC_DRQ; + drq->assoc_qid = cq->queue_id; + drq->subtype = subtype; + drq->host_index = 0; + drq->hba_index = 0; + + /* link the header and data RQs onto the parent cq child list */ + list_add_tail(&hrq->list, &cq->child_list); + list_add_tail(&drq->list, &cq->child_list); + +out: + mempool_free(mbox, phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_eq_destroy - Destroy an event Queue on the HBA + * @eq: The queue structure associated with the queue to destroy. + * + * This function destroys a queue, as detailed in @eq by sending an mailbox + * command, specific to the type of queue, to the HBA. + * + * The @eq struct is used to get the queue ID of the queue to destroy. + * + * On success this function will return a zero. If the queue destroy mailbox + * command fails this function will return -ENXIO. + **/ +int +lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq) +{ + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + + /* sanity check on queue memory */ + if (!eq) + return -ENODEV; + mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_eq_destroy) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_EQ_DESTROY, + length, LPFC_SLI4_MBX_EMBED); + bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request, + eq->queue_id); + mbox->vport = eq->phba->pport; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + + rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL); + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr = (union lpfc_sli4_cfg_shdr *) + &mbox->u.mqe.un.eq_destroy.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2505 EQ_DESTROY mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + } + + /* Remove eq from any list */ + list_del_init(&eq->list); + mempool_free(mbox, eq->phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_cq_destroy - Destroy a Completion Queue on the HBA + * @cq: The queue structure associated with the queue to destroy. + * + * This function destroys a queue, as detailed in @cq by sending an mailbox + * command, specific to the type of queue, to the HBA. + * + * The @cq struct is used to get the queue ID of the queue to destroy. + * + * On success this function will return a zero. If the queue destroy mailbox + * command fails this function will return -ENXIO. + **/ +int +lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq) +{ + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + + /* sanity check on queue memory */ + if (!cq) + return -ENODEV; + mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_cq_destroy) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_CQ_DESTROY, + length, LPFC_SLI4_MBX_EMBED); + bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request, + cq->queue_id); + mbox->vport = cq->phba->pport; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL); + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr = (union lpfc_sli4_cfg_shdr *) + &mbox->u.mqe.un.wq_create.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2506 CQ_DESTROY mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + } + /* Remove cq from any list */ + list_del_init(&cq->list); + mempool_free(mbox, cq->phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA + * @qm: The queue structure associated with the queue to destroy. + * + * This function destroys a queue, as detailed in @mq by sending an mailbox + * command, specific to the type of queue, to the HBA. + * + * The @mq struct is used to get the queue ID of the queue to destroy. + * + * On success this function will return a zero. If the queue destroy mailbox + * command fails this function will return -ENXIO. + **/ +int +lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq) +{ + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + + /* sanity check on queue memory */ + if (!mq) + return -ENODEV; + mbox = mempool_alloc(mq->phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_mq_destroy) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_MQ_DESTROY, + length, LPFC_SLI4_MBX_EMBED); + bf_set(lpfc_mbx_mq_destroy_q_id, &mbox->u.mqe.un.mq_destroy.u.request, + mq->queue_id); + mbox->vport = mq->phba->pport; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + rc = lpfc_sli_issue_mbox(mq->phba, mbox, MBX_POLL); + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr = (union lpfc_sli4_cfg_shdr *) + &mbox->u.mqe.un.mq_destroy.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2507 MQ_DESTROY mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + } + /* Remove mq from any list */ + list_del_init(&mq->list); + mempool_free(mbox, mq->phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_wq_destroy - Destroy a Work Queue on the HBA + * @wq: The queue structure associated with the queue to destroy. + * + * This function destroys a queue, as detailed in @wq by sending an mailbox + * command, specific to the type of queue, to the HBA. + * + * The @wq struct is used to get the queue ID of the queue to destroy. + * + * On success this function will return a zero. If the queue destroy mailbox + * command fails this function will return -ENXIO. + **/ +int +lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq) +{ + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + + /* sanity check on queue memory */ + if (!wq) + return -ENODEV; + mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_wq_destroy) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY, + length, LPFC_SLI4_MBX_EMBED); + bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request, + wq->queue_id); + mbox->vport = wq->phba->pport; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL); + shdr = (union lpfc_sli4_cfg_shdr *) + &mbox->u.mqe.un.wq_destroy.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2508 WQ_DESTROY mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + } + /* Remove wq from any list */ + list_del_init(&wq->list); + mempool_free(mbox, wq->phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_rq_destroy - Destroy a Receive Queue on the HBA + * @rq: The queue structure associated with the queue to destroy. + * + * This function destroys a queue, as detailed in @rq by sending an mailbox + * command, specific to the type of queue, to the HBA. + * + * The @rq struct is used to get the queue ID of the queue to destroy. + * + * On success this function will return a zero. If the queue destroy mailbox + * command fails this function will return -ENXIO. + **/ +int +lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq, + struct lpfc_queue *drq) +{ + LPFC_MBOXQ_t *mbox; + int rc, length, status = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + + /* sanity check on queue memory */ + if (!hrq || !drq) + return -ENODEV; + mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + length = (sizeof(struct lpfc_mbx_rq_destroy) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY, + length, LPFC_SLI4_MBX_EMBED); + bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request, + hrq->queue_id); + mbox->vport = hrq->phba->pport; + mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL); + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr = (union lpfc_sli4_cfg_shdr *) + &mbox->u.mqe.un.rq_destroy.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2509 RQ_DESTROY mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + if (rc != MBX_TIMEOUT) + mempool_free(mbox, hrq->phba->mbox_mem_pool); + return -ENXIO; + } + bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request, + drq->queue_id); + rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL); + shdr = (union lpfc_sli4_cfg_shdr *) + &mbox->u.mqe.un.rq_destroy.header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2510 RQ_DESTROY mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + status = -ENXIO; + } + list_del_init(&hrq->list); + list_del_init(&drq->list); + mempool_free(mbox, hrq->phba->mbox_mem_pool); + return status; +} + +/** + * lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA + * @phba: The virtual port for which this call being executed. + * @pdma_phys_addr0: Physical address of the 1st SGL page. + * @pdma_phys_addr1: Physical address of the 2nd SGL page. + * @xritag: the xritag that ties this io to the SGL pages. + * + * This routine will post the sgl pages for the IO that has the xritag + * that is in the iocbq structure. The xritag is assigned during iocbq + * creation and persists for as long as the driver is loaded. + * if the caller has fewer than 256 scatter gather segments to map then + * pdma_phys_addr1 should be 0. + * If the caller needs to map more than 256 scatter gather segment then + * pdma_phys_addr1 should be a valid physical address. + * physical address for SGLs must be 64 byte aligned. + * If you are going to map 2 SGL's then the first one must have 256 entries + * the second sgl can have between 1 and 256 entries. + * + * Return codes: + * 0 - Success + * -ENXIO, -ENOMEM - Failure + **/ +int +lpfc_sli4_post_sgl(struct lpfc_hba *phba, + dma_addr_t pdma_phys_addr0, + dma_addr_t pdma_phys_addr1, + uint16_t xritag) +{ + struct lpfc_mbx_post_sgl_pages *post_sgl_pages; + LPFC_MBOXQ_t *mbox; + int rc; + uint32_t shdr_status, shdr_add_status; + uint32_t mbox_tmo; + union lpfc_sli4_cfg_shdr *shdr; + + if (xritag == NO_XRI) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "0364 Invalid param:\n"); + return -EINVAL; + } + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, + sizeof(struct lpfc_mbx_post_sgl_pages) - + sizeof(struct lpfc_sli4_cfg_mhdr), LPFC_SLI4_MBX_EMBED); + + post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *) + &mbox->u.mqe.un.post_sgl_pages; + bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag); + bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1); + + post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo = + cpu_to_le32(putPaddrLow(pdma_phys_addr0)); + post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi = + cpu_to_le32(putPaddrHigh(pdma_phys_addr0)); + + post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo = + cpu_to_le32(putPaddrLow(pdma_phys_addr1)); + post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi = + cpu_to_le32(putPaddrHigh(pdma_phys_addr1)); + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (rc != MBX_TIMEOUT) + mempool_free(mbox, phba->mbox_mem_pool); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2511 POST_SGL mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + } + return 0; +} + +/** + * lpfc_sli4_alloc_xri - Get an available rpi in the device's range + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to post rpi header templates to the + * HBA consistent with the SLI-4 interface spec. This routine + * posts a SLI4_PAGE_SIZE memory region to the port to hold up to + * SLI4_PAGE_SIZE modulo 64 rpi context headers. + * + * Returns + * A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful + * LPFC_RPI_ALLOC_ERROR if no rpis are available. + **/ +static uint16_t +lpfc_sli4_alloc_xri(struct lpfc_hba *phba) +{ + unsigned long xri; + + /* + * Fetch the next logical xri. Because this index is logical, + * the driver starts at 0 each time. + */ + spin_lock_irq(&phba->hbalock); + xri = find_next_zero_bit(phba->sli4_hba.xri_bmask, + phba->sli4_hba.max_cfg_param.max_xri, 0); + if (xri >= phba->sli4_hba.max_cfg_param.max_xri) { + spin_unlock_irq(&phba->hbalock); + return NO_XRI; + } else { + set_bit(xri, phba->sli4_hba.xri_bmask); + phba->sli4_hba.max_cfg_param.xri_used++; + } + spin_unlock_irq(&phba->hbalock); + return xri; +} + +/** + * lpfc_sli4_free_xri - Release an xri for reuse. + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to release an xri to the pool of + * available rpis maintained by the driver. + **/ +static void +__lpfc_sli4_free_xri(struct lpfc_hba *phba, int xri) +{ + if (test_and_clear_bit(xri, phba->sli4_hba.xri_bmask)) { + phba->sli4_hba.max_cfg_param.xri_used--; + } +} + +/** + * lpfc_sli4_free_xri - Release an xri for reuse. + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to release an xri to the pool of + * available rpis maintained by the driver. + **/ +void +lpfc_sli4_free_xri(struct lpfc_hba *phba, int xri) +{ + spin_lock_irq(&phba->hbalock); + __lpfc_sli4_free_xri(phba, xri); + spin_unlock_irq(&phba->hbalock); +} + +/** + * lpfc_sli4_next_xritag - Get an xritag for the io + * @phba: Pointer to HBA context object. + * + * This function gets an xritag for the iocb. If there is no unused xritag + * it will return 0xffff. + * The function returns the allocated xritag if successful, else returns zero. + * Zero is not a valid xritag. + * The caller is not required to hold any lock. + **/ +uint16_t +lpfc_sli4_next_xritag(struct lpfc_hba *phba) +{ + uint16_t xri_index; + + xri_index = lpfc_sli4_alloc_xri(phba); + if (xri_index == NO_XRI) + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "2004 Failed to allocate XRI.last XRITAG is %d" + " Max XRI is %d, Used XRI is %d\n", + xri_index, + phba->sli4_hba.max_cfg_param.max_xri, + phba->sli4_hba.max_cfg_param.xri_used); + return xri_index; +} + +/** + * lpfc_sli4_post_els_sgl_list - post a block of ELS sgls to the port. + * @phba: pointer to lpfc hba data structure. + * @post_sgl_list: pointer to els sgl entry list. + * @count: number of els sgl entries on the list. + * + * This routine is invoked to post a block of driver's sgl pages to the + * HBA using non-embedded mailbox command. No Lock is held. This routine + * is only called when the driver is loading and after all IO has been + * stopped. + **/ +static int +lpfc_sli4_post_els_sgl_list(struct lpfc_hba *phba, + struct list_head *post_sgl_list, + int post_cnt) +{ + struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL; + struct lpfc_mbx_post_uembed_sgl_page1 *sgl; + struct sgl_page_pairs *sgl_pg_pairs; + void *viraddr; + LPFC_MBOXQ_t *mbox; + uint32_t reqlen, alloclen, pg_pairs; + uint32_t mbox_tmo; + uint16_t xritag_start = 0; + int rc = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + + reqlen = phba->sli4_hba.els_xri_cnt * sizeof(struct sgl_page_pairs) + + sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); + if (reqlen > SLI4_PAGE_SIZE) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "2559 Block sgl registration required DMA " + "size (%d) great than a page\n", reqlen); + return -ENOMEM; + } + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + + /* Allocate DMA memory and set up the non-embedded mailbox command */ + alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, + LPFC_SLI4_MBX_NEMBED); + + if (alloclen < reqlen) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0285 Allocated DMA memory size (%d) is " + "less than the requested DMA memory " + "size (%d)\n", alloclen, reqlen); + lpfc_sli4_mbox_cmd_free(phba, mbox); + return -ENOMEM; + } + /* Set up the SGL pages in the non-embedded DMA pages */ + viraddr = mbox->sge_array->addr[0]; + sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; + sgl_pg_pairs = &sgl->sgl_pg_pairs; + + pg_pairs = 0; + list_for_each_entry_safe(sglq_entry, sglq_next, post_sgl_list, list) { + /* Set up the sge entry */ + sgl_pg_pairs->sgl_pg0_addr_lo = + cpu_to_le32(putPaddrLow(sglq_entry->phys)); + sgl_pg_pairs->sgl_pg0_addr_hi = + cpu_to_le32(putPaddrHigh(sglq_entry->phys)); + sgl_pg_pairs->sgl_pg1_addr_lo = + cpu_to_le32(putPaddrLow(0)); + sgl_pg_pairs->sgl_pg1_addr_hi = + cpu_to_le32(putPaddrHigh(0)); + + /* Keep the first xritag on the list */ + if (pg_pairs == 0) + xritag_start = sglq_entry->sli4_xritag; + sgl_pg_pairs++; + pg_pairs++; + } + + /* Complete initialization and perform endian conversion. */ + bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); + bf_set(lpfc_post_sgl_pages_xricnt, sgl, phba->sli4_hba.els_xri_cnt); + sgl->word0 = cpu_to_le32(sgl->word0); + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (rc != MBX_TIMEOUT) + lpfc_sli4_mbox_cmd_free(phba, mbox); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2513 POST_SGL_BLOCK mailbox command failed " + "status x%x add_status x%x mbx status x%x\n", + shdr_status, shdr_add_status, rc); + rc = -ENXIO; + } + return rc; +} + +/** + * lpfc_sli4_post_scsi_sgl_block - post a block of scsi sgl list to firmware + * @phba: pointer to lpfc hba data structure. + * @sblist: pointer to scsi buffer list. + * @count: number of scsi buffers on the list. + * + * This routine is invoked to post a block of @count scsi sgl pages from a + * SCSI buffer list @sblist to the HBA using non-embedded mailbox command. + * No Lock is held. + * + **/ +int +lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, + struct list_head *sblist, + int count) +{ + struct lpfc_scsi_buf *psb; + struct lpfc_mbx_post_uembed_sgl_page1 *sgl; + struct sgl_page_pairs *sgl_pg_pairs; + void *viraddr; + LPFC_MBOXQ_t *mbox; + uint32_t reqlen, alloclen, pg_pairs; + uint32_t mbox_tmo; + uint16_t xritag_start = 0; + int rc = 0; + uint32_t shdr_status, shdr_add_status; + dma_addr_t pdma_phys_bpl1; + union lpfc_sli4_cfg_shdr *shdr; + + /* Calculate the requested length of the dma memory */ + reqlen = count * sizeof(struct sgl_page_pairs) + + sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); + if (reqlen > SLI4_PAGE_SIZE) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "0217 Block sgl registration required DMA " + "size (%d) great than a page\n", reqlen); + return -ENOMEM; + } + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0283 Failed to allocate mbox cmd memory\n"); + return -ENOMEM; + } + + /* Allocate DMA memory and set up the non-embedded mailbox command */ + alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, + LPFC_SLI4_MBX_NEMBED); + + if (alloclen < reqlen) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2561 Allocated DMA memory size (%d) is " + "less than the requested DMA memory " + "size (%d)\n", alloclen, reqlen); + lpfc_sli4_mbox_cmd_free(phba, mbox); + return -ENOMEM; + } + + /* Get the first SGE entry from the non-embedded DMA memory */ + viraddr = mbox->sge_array->addr[0]; + + /* Set up the SGL pages in the non-embedded DMA pages */ + sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; + sgl_pg_pairs = &sgl->sgl_pg_pairs; + + pg_pairs = 0; + list_for_each_entry(psb, sblist, list) { + /* Set up the sge entry */ + sgl_pg_pairs->sgl_pg0_addr_lo = + cpu_to_le32(putPaddrLow(psb->dma_phys_bpl)); + sgl_pg_pairs->sgl_pg0_addr_hi = + cpu_to_le32(putPaddrHigh(psb->dma_phys_bpl)); + if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) + pdma_phys_bpl1 = psb->dma_phys_bpl + SGL_PAGE_SIZE; + else + pdma_phys_bpl1 = 0; + sgl_pg_pairs->sgl_pg1_addr_lo = + cpu_to_le32(putPaddrLow(pdma_phys_bpl1)); + sgl_pg_pairs->sgl_pg1_addr_hi = + cpu_to_le32(putPaddrHigh(pdma_phys_bpl1)); + /* Keep the first xritag on the list */ + if (pg_pairs == 0) + xritag_start = psb->cur_iocbq.sli4_xritag; + sgl_pg_pairs++; + pg_pairs++; + } + bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); + bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs); + /* Perform endian conversion if necessary */ + sgl->word0 = cpu_to_le32(sgl->word0); + + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (rc != MBX_TIMEOUT) + lpfc_sli4_mbox_cmd_free(phba, mbox); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2564 POST_SGL_BLOCK mailbox command failed " + "status x%x add_status x%x mbx status x%x\n", + shdr_status, shdr_add_status, rc); + rc = -ENXIO; + } + return rc; +} + +/** + * lpfc_fc_frame_check - Check that this frame is a valid frame to handle + * @phba: pointer to lpfc_hba struct that the frame was received on + * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) + * + * This function checks the fields in the @fc_hdr to see if the FC frame is a + * valid type of frame that the LPFC driver will handle. This function will + * return a zero if the frame is a valid frame or a non zero value when the + * frame does not pass the check. + **/ +static int +lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr) +{ + /* make rctl_names static to save stack space */ + static char *rctl_names[] = FC_RCTL_NAMES_INIT; + char *type_names[] = FC_TYPE_NAMES_INIT; + struct fc_vft_header *fc_vft_hdr; + uint32_t *header = (uint32_t *) fc_hdr; + + switch (fc_hdr->fh_r_ctl) { + case FC_RCTL_DD_UNCAT: /* uncategorized information */ + case FC_RCTL_DD_SOL_DATA: /* solicited data */ + case FC_RCTL_DD_UNSOL_CTL: /* unsolicited control */ + case FC_RCTL_DD_SOL_CTL: /* solicited control or reply */ + case FC_RCTL_DD_UNSOL_DATA: /* unsolicited data */ + case FC_RCTL_DD_DATA_DESC: /* data descriptor */ + case FC_RCTL_DD_UNSOL_CMD: /* unsolicited command */ + case FC_RCTL_DD_CMD_STATUS: /* command status */ + case FC_RCTL_ELS_REQ: /* extended link services request */ + case FC_RCTL_ELS_REP: /* extended link services reply */ + case FC_RCTL_ELS4_REQ: /* FC-4 ELS request */ + case FC_RCTL_ELS4_REP: /* FC-4 ELS reply */ + case FC_RCTL_BA_NOP: /* basic link service NOP */ + case FC_RCTL_BA_ABTS: /* basic link service abort */ + case FC_RCTL_BA_RMC: /* remove connection */ + case FC_RCTL_BA_ACC: /* basic accept */ + case FC_RCTL_BA_RJT: /* basic reject */ + case FC_RCTL_BA_PRMT: + case FC_RCTL_ACK_1: /* acknowledge_1 */ + case FC_RCTL_ACK_0: /* acknowledge_0 */ + case FC_RCTL_P_RJT: /* port reject */ + case FC_RCTL_F_RJT: /* fabric reject */ + case FC_RCTL_P_BSY: /* port busy */ + case FC_RCTL_F_BSY: /* fabric busy to data frame */ + case FC_RCTL_F_BSYL: /* fabric busy to link control frame */ + case FC_RCTL_LCR: /* link credit reset */ + case FC_RCTL_END: /* end */ + break; + case FC_RCTL_VFTH: /* Virtual Fabric tagging Header */ + fc_vft_hdr = (struct fc_vft_header *)fc_hdr; + fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1]; + return lpfc_fc_frame_check(phba, fc_hdr); + default: + goto drop; + } + switch (fc_hdr->fh_type) { + case FC_TYPE_BLS: + case FC_TYPE_ELS: + case FC_TYPE_FCP: + case FC_TYPE_CT: + break; + case FC_TYPE_IP: + case FC_TYPE_ILS: + default: + goto drop; + } + + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "2538 Received frame rctl:%s (x%x), type:%s (x%x), " + "frame Data:%08x %08x %08x %08x %08x %08x %08x\n", + rctl_names[fc_hdr->fh_r_ctl], fc_hdr->fh_r_ctl, + type_names[fc_hdr->fh_type], fc_hdr->fh_type, + be32_to_cpu(header[0]), be32_to_cpu(header[1]), + be32_to_cpu(header[2]), be32_to_cpu(header[3]), + be32_to_cpu(header[4]), be32_to_cpu(header[5]), + be32_to_cpu(header[6])); + return 0; +drop: + lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, + "2539 Dropped frame rctl:%s type:%s\n", + rctl_names[fc_hdr->fh_r_ctl], + type_names[fc_hdr->fh_type]); + return 1; +} + +/** + * lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame + * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) + * + * This function processes the FC header to retrieve the VFI from the VF + * header, if one exists. This function will return the VFI if one exists + * or 0 if no VSAN Header exists. + **/ +static uint32_t +lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr) +{ + struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr; + + if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH) + return 0; + return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr); +} + +/** + * lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to + * @phba: Pointer to the HBA structure to search for the vport on + * @fc_hdr: A pointer to the FC Header data (In Big Endian Format) + * @fcfi: The FC Fabric ID that the frame came from + * + * This function searches the @phba for a vport that matches the content of the + * @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the + * VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function + * returns the matching vport pointer or NULL if unable to match frame to a + * vport. + **/ +static struct lpfc_vport * +lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr, + uint16_t fcfi) +{ + struct lpfc_vport **vports; + struct lpfc_vport *vport = NULL; + int i; + uint32_t did = (fc_hdr->fh_d_id[0] << 16 | + fc_hdr->fh_d_id[1] << 8 | + fc_hdr->fh_d_id[2]); + + if (did == Fabric_DID) + return phba->pport; + if ((phba->pport->fc_flag & FC_PT2PT) && + !(phba->link_state == LPFC_HBA_READY)) + return phba->pport; + + vports = lpfc_create_vport_work_array(phba); + if (vports != NULL) + for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { + if (phba->fcf.fcfi == fcfi && + vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) && + vports[i]->fc_myDID == did) { + vport = vports[i]; + break; + } + } + lpfc_destroy_vport_work_array(phba, vports); + return vport; +} + +/** + * lpfc_update_rcv_time_stamp - Update vport's rcv seq time stamp + * @vport: The vport to work on. + * + * This function updates the receive sequence time stamp for this vport. The + * receive sequence time stamp indicates the time that the last frame of the + * the sequence that has been idle for the longest amount of time was received. + * the driver uses this time stamp to indicate if any received sequences have + * timed out. + **/ +static void +lpfc_update_rcv_time_stamp(struct lpfc_vport *vport) +{ + struct lpfc_dmabuf *h_buf; + struct hbq_dmabuf *dmabuf = NULL; + + /* get the oldest sequence on the rcv list */ + h_buf = list_get_first(&vport->rcv_buffer_list, + struct lpfc_dmabuf, list); + if (!h_buf) + return; + dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); + vport->rcv_buffer_time_stamp = dmabuf->time_stamp; +} + +/** + * lpfc_cleanup_rcv_buffers - Cleans up all outstanding receive sequences. + * @vport: The vport that the received sequences were sent to. + * + * This function cleans up all outstanding received sequences. This is called + * by the driver when a link event or user action invalidates all the received + * sequences. + **/ +void +lpfc_cleanup_rcv_buffers(struct lpfc_vport *vport) +{ + struct lpfc_dmabuf *h_buf, *hnext; + struct lpfc_dmabuf *d_buf, *dnext; + struct hbq_dmabuf *dmabuf = NULL; + + /* start with the oldest sequence on the rcv list */ + list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) { + dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); + list_del_init(&dmabuf->hbuf.list); + list_for_each_entry_safe(d_buf, dnext, + &dmabuf->dbuf.list, list) { + list_del_init(&d_buf->list); + lpfc_in_buf_free(vport->phba, d_buf); + } + lpfc_in_buf_free(vport->phba, &dmabuf->dbuf); + } +} + +/** + * lpfc_rcv_seq_check_edtov - Cleans up timed out receive sequences. + * @vport: The vport that the received sequences were sent to. + * + * This function determines whether any received sequences have timed out by + * first checking the vport's rcv_buffer_time_stamp. If this time_stamp + * indicates that there is at least one timed out sequence this routine will + * go through the received sequences one at a time from most inactive to most + * active to determine which ones need to be cleaned up. Once it has determined + * that a sequence needs to be cleaned up it will simply free up the resources + * without sending an abort. + **/ +void +lpfc_rcv_seq_check_edtov(struct lpfc_vport *vport) +{ + struct lpfc_dmabuf *h_buf, *hnext; + struct lpfc_dmabuf *d_buf, *dnext; + struct hbq_dmabuf *dmabuf = NULL; + unsigned long timeout; + int abort_count = 0; + + timeout = (msecs_to_jiffies(vport->phba->fc_edtov) + + vport->rcv_buffer_time_stamp); + if (list_empty(&vport->rcv_buffer_list) || + time_before(jiffies, timeout)) + return; + /* start with the oldest sequence on the rcv list */ + list_for_each_entry_safe(h_buf, hnext, &vport->rcv_buffer_list, list) { + dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); + timeout = (msecs_to_jiffies(vport->phba->fc_edtov) + + dmabuf->time_stamp); + if (time_before(jiffies, timeout)) + break; + abort_count++; + list_del_init(&dmabuf->hbuf.list); + list_for_each_entry_safe(d_buf, dnext, + &dmabuf->dbuf.list, list) { + list_del_init(&d_buf->list); + lpfc_in_buf_free(vport->phba, d_buf); + } + lpfc_in_buf_free(vport->phba, &dmabuf->dbuf); + } + if (abort_count) + lpfc_update_rcv_time_stamp(vport); +} + +/** + * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences + * @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame + * + * This function searches through the existing incomplete sequences that have + * been sent to this @vport. If the frame matches one of the incomplete + * sequences then the dbuf in the @dmabuf is added to the list of frames that + * make up that sequence. If no sequence is found that matches this frame then + * the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list + * This function returns a pointer to the first dmabuf in the sequence list that + * the frame was linked to. + **/ +static struct hbq_dmabuf * +lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf) +{ + struct fc_frame_header *new_hdr; + struct fc_frame_header *temp_hdr; + struct lpfc_dmabuf *d_buf; + struct lpfc_dmabuf *h_buf; + struct hbq_dmabuf *seq_dmabuf = NULL; + struct hbq_dmabuf *temp_dmabuf = NULL; + + INIT_LIST_HEAD(&dmabuf->dbuf.list); + dmabuf->time_stamp = jiffies; + new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; + /* Use the hdr_buf to find the sequence that this frame belongs to */ + list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) { + temp_hdr = (struct fc_frame_header *)h_buf->virt; + if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) || + (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) || + (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3))) + continue; + /* found a pending sequence that matches this frame */ + seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); + break; + } + if (!seq_dmabuf) { + /* + * This indicates first frame received for this sequence. + * Queue the buffer on the vport's rcv_buffer_list. + */ + list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list); + lpfc_update_rcv_time_stamp(vport); + return dmabuf; + } + temp_hdr = seq_dmabuf->hbuf.virt; + if (be16_to_cpu(new_hdr->fh_seq_cnt) < + be16_to_cpu(temp_hdr->fh_seq_cnt)) { + list_del_init(&seq_dmabuf->hbuf.list); + list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list); + list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list); + lpfc_update_rcv_time_stamp(vport); + return dmabuf; + } + /* move this sequence to the tail to indicate a young sequence */ + list_move_tail(&seq_dmabuf->hbuf.list, &vport->rcv_buffer_list); + seq_dmabuf->time_stamp = jiffies; + lpfc_update_rcv_time_stamp(vport); + if (list_empty(&seq_dmabuf->dbuf.list)) { + temp_hdr = dmabuf->hbuf.virt; + list_add_tail(&dmabuf->dbuf.list, &seq_dmabuf->dbuf.list); + return seq_dmabuf; + } + /* find the correct place in the sequence to insert this frame */ + list_for_each_entry_reverse(d_buf, &seq_dmabuf->dbuf.list, list) { + temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf); + temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt; + /* + * If the frame's sequence count is greater than the frame on + * the list then insert the frame right after this frame + */ + if (be16_to_cpu(new_hdr->fh_seq_cnt) > + be16_to_cpu(temp_hdr->fh_seq_cnt)) { + list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list); + return seq_dmabuf; + } + } + return NULL; +} + +/** + * lpfc_sli4_abort_partial_seq - Abort partially assembled unsol sequence + * @vport: pointer to a vitural port + * @dmabuf: pointer to a dmabuf that describes the FC sequence + * + * This function tries to abort from the partially assembed sequence, described + * by the information from basic abbort @dmabuf. It checks to see whether such + * partially assembled sequence held by the driver. If so, it shall free up all + * the frames from the partially assembled sequence. + * + * Return + * true -- if there is matching partially assembled sequence present and all + * the frames freed with the sequence; + * false -- if there is no matching partially assembled sequence present so + * nothing got aborted in the lower layer driver + **/ +static bool +lpfc_sli4_abort_partial_seq(struct lpfc_vport *vport, + struct hbq_dmabuf *dmabuf) +{ + struct fc_frame_header *new_hdr; + struct fc_frame_header *temp_hdr; + struct lpfc_dmabuf *d_buf, *n_buf, *h_buf; + struct hbq_dmabuf *seq_dmabuf = NULL; + + /* Use the hdr_buf to find the sequence that matches this frame */ + INIT_LIST_HEAD(&dmabuf->dbuf.list); + INIT_LIST_HEAD(&dmabuf->hbuf.list); + new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; + list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) { + temp_hdr = (struct fc_frame_header *)h_buf->virt; + if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) || + (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) || + (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3))) + continue; + /* found a pending sequence that matches this frame */ + seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); + break; + } + + /* Free up all the frames from the partially assembled sequence */ + if (seq_dmabuf) { + list_for_each_entry_safe(d_buf, n_buf, + &seq_dmabuf->dbuf.list, list) { + list_del_init(&d_buf->list); + lpfc_in_buf_free(vport->phba, d_buf); + } + return true; + } + return false; +} + +/** + * lpfc_sli4_abort_ulp_seq - Abort assembled unsol sequence from ulp + * @vport: pointer to a vitural port + * @dmabuf: pointer to a dmabuf that describes the FC sequence + * + * This function tries to abort from the assembed sequence from upper level + * protocol, described by the information from basic abbort @dmabuf. It + * checks to see whether such pending context exists at upper level protocol. + * If so, it shall clean up the pending context. + * + * Return + * true -- if there is matching pending context of the sequence cleaned + * at ulp; + * false -- if there is no matching pending context of the sequence present + * at ulp. + **/ +static bool +lpfc_sli4_abort_ulp_seq(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf) +{ + struct lpfc_hba *phba = vport->phba; + int handled; + + /* Accepting abort at ulp with SLI4 only */ + if (phba->sli_rev < LPFC_SLI_REV4) + return false; + + /* Register all caring upper level protocols to attend abort */ + handled = lpfc_ct_handle_unsol_abort(phba, dmabuf); + if (handled) + return true; + + return false; +} + +/** + * lpfc_sli4_seq_abort_rsp_cmpl - BLS ABORT RSP seq abort iocb complete handler + * @phba: Pointer to HBA context object. + * @cmd_iocbq: pointer to the command iocbq structure. + * @rsp_iocbq: pointer to the response iocbq structure. + * + * This function handles the sequence abort response iocb command complete + * event. It properly releases the memory allocated to the sequence abort + * accept iocb. + **/ +static void +lpfc_sli4_seq_abort_rsp_cmpl(struct lpfc_hba *phba, + struct lpfc_iocbq *cmd_iocbq, + struct lpfc_iocbq *rsp_iocbq) +{ + struct lpfc_nodelist *ndlp; + + if (cmd_iocbq) { + ndlp = (struct lpfc_nodelist *)cmd_iocbq->context1; + lpfc_nlp_put(ndlp); + lpfc_nlp_not_used(ndlp); + lpfc_sli_release_iocbq(phba, cmd_iocbq); + } + + /* Failure means BLS ABORT RSP did not get delivered to remote node*/ + if (rsp_iocbq && rsp_iocbq->iocb.ulpStatus) + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "3154 BLS ABORT RSP failed, data: x%x/x%x\n", + rsp_iocbq->iocb.ulpStatus, + rsp_iocbq->iocb.un.ulpWord[4]); +} + +/** + * lpfc_sli4_xri_inrange - check xri is in range of xris owned by driver. + * @phba: Pointer to HBA context object. + * @xri: xri id in transaction. + * + * This function validates the xri maps to the known range of XRIs allocated an + * used by the driver. + **/ +uint16_t +lpfc_sli4_xri_inrange(struct lpfc_hba *phba, + uint16_t xri) +{ + uint16_t i; + + for (i = 0; i < phba->sli4_hba.max_cfg_param.max_xri; i++) { + if (xri == phba->sli4_hba.xri_ids[i]) + return i; + } + return NO_XRI; +} + +/** + * lpfc_sli4_seq_abort_rsp - bls rsp to sequence abort + * @phba: Pointer to HBA context object. + * @fc_hdr: pointer to a FC frame header. + * + * This function sends a basic response to a previous unsol sequence abort + * event after aborting the sequence handling. + **/ +static void +lpfc_sli4_seq_abort_rsp(struct lpfc_vport *vport, + struct fc_frame_header *fc_hdr, bool aborted) +{ + struct lpfc_hba *phba = vport->phba; + struct lpfc_iocbq *ctiocb = NULL; + struct lpfc_nodelist *ndlp; + uint16_t oxid, rxid, xri, lxri; + uint32_t sid, fctl; + IOCB_t *icmd; + int rc; + + if (!lpfc_is_link_up(phba)) + return; + + sid = sli4_sid_from_fc_hdr(fc_hdr); + oxid = be16_to_cpu(fc_hdr->fh_ox_id); + rxid = be16_to_cpu(fc_hdr->fh_rx_id); + + ndlp = lpfc_findnode_did(vport, sid); + if (!ndlp) { + ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL); + if (!ndlp) { + lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, + "1268 Failed to allocate ndlp for " + "oxid:x%x SID:x%x\n", oxid, sid); + return; + } + lpfc_nlp_init(vport, ndlp, sid); + /* Put ndlp onto pport node list */ + lpfc_enqueue_node(vport, ndlp); + } else if (!NLP_CHK_NODE_ACT(ndlp)) { + /* re-setup ndlp without removing from node list */ + ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE); + if (!ndlp) { + lpfc_printf_vlog(vport, KERN_WARNING, LOG_ELS, + "3275 Failed to active ndlp found " + "for oxid:x%x SID:x%x\n", oxid, sid); + return; + } + } + + /* Allocate buffer for rsp iocb */ + ctiocb = lpfc_sli_get_iocbq(phba); + if (!ctiocb) + return; + + /* Extract the F_CTL field from FC_HDR */ + fctl = sli4_fctl_from_fc_hdr(fc_hdr); + + icmd = &ctiocb->iocb; + icmd->un.xseq64.bdl.bdeSize = 0; + icmd->un.xseq64.bdl.ulpIoTag32 = 0; + icmd->un.xseq64.w5.hcsw.Dfctl = 0; + icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_ACC; + icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_BLS; + + /* Fill in the rest of iocb fields */ + icmd->ulpCommand = CMD_XMIT_BLS_RSP64_CX; + icmd->ulpBdeCount = 0; + icmd->ulpLe = 1; + icmd->ulpClass = CLASS3; + icmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; + ctiocb->context1 = lpfc_nlp_get(ndlp); + + ctiocb->iocb_cmpl = NULL; + ctiocb->vport = phba->pport; + ctiocb->iocb_cmpl = lpfc_sli4_seq_abort_rsp_cmpl; + ctiocb->sli4_lxritag = NO_XRI; + ctiocb->sli4_xritag = NO_XRI; + + if (fctl & FC_FC_EX_CTX) + /* Exchange responder sent the abort so we + * own the oxid. + */ + xri = oxid; + else + xri = rxid; + lxri = lpfc_sli4_xri_inrange(phba, xri); + if (lxri != NO_XRI) + lpfc_set_rrq_active(phba, ndlp, lxri, + (xri == oxid) ? rxid : oxid, 0); + /* For BA_ABTS from exchange responder, if the logical xri with + * the oxid maps to the FCP XRI range, the port no longer has + * that exchange context, send a BLS_RJT. Override the IOCB for + * a BA_RJT. + */ + if ((fctl & FC_FC_EX_CTX) && + (lxri > lpfc_sli4_get_els_iocb_cnt(phba))) { + icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_RJT; + bf_set(lpfc_vndr_code, &icmd->un.bls_rsp, 0); + bf_set(lpfc_rsn_expln, &icmd->un.bls_rsp, FC_BA_RJT_INV_XID); + bf_set(lpfc_rsn_code, &icmd->un.bls_rsp, FC_BA_RJT_UNABLE); + } + + /* If BA_ABTS failed to abort a partially assembled receive sequence, + * the driver no longer has that exchange, send a BLS_RJT. Override + * the IOCB for a BA_RJT. + */ + if (aborted == false) { + icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_RJT; + bf_set(lpfc_vndr_code, &icmd->un.bls_rsp, 0); + bf_set(lpfc_rsn_expln, &icmd->un.bls_rsp, FC_BA_RJT_INV_XID); + bf_set(lpfc_rsn_code, &icmd->un.bls_rsp, FC_BA_RJT_UNABLE); + } + + if (fctl & FC_FC_EX_CTX) { + /* ABTS sent by responder to CT exchange, construction + * of BA_ACC will use OX_ID from ABTS for the XRI_TAG + * field and RX_ID from ABTS for RX_ID field. + */ + bf_set(lpfc_abts_orig, &icmd->un.bls_rsp, LPFC_ABTS_UNSOL_RSP); + } else { + /* ABTS sent by initiator to CT exchange, construction + * of BA_ACC will need to allocate a new XRI as for the + * XRI_TAG field. + */ + bf_set(lpfc_abts_orig, &icmd->un.bls_rsp, LPFC_ABTS_UNSOL_INT); + } + bf_set(lpfc_abts_rxid, &icmd->un.bls_rsp, rxid); + bf_set(lpfc_abts_oxid, &icmd->un.bls_rsp, oxid); + + /* Xmit CT abts response on exchange <xid> */ + lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, + "1200 Send BLS cmd x%x on oxid x%x Data: x%x\n", + icmd->un.xseq64.w5.hcsw.Rctl, oxid, phba->link_state); + + rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0); + if (rc == IOCB_ERROR) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, + "2925 Failed to issue CT ABTS RSP x%x on " + "xri x%x, Data x%x\n", + icmd->un.xseq64.w5.hcsw.Rctl, oxid, + phba->link_state); + lpfc_nlp_put(ndlp); + ctiocb->context1 = NULL; + lpfc_sli_release_iocbq(phba, ctiocb); + } +} + +/** + * lpfc_sli4_handle_unsol_abort - Handle sli-4 unsolicited abort event + * @vport: Pointer to the vport on which this sequence was received + * @dmabuf: pointer to a dmabuf that describes the FC sequence + * + * This function handles an SLI-4 unsolicited abort event. If the unsolicited + * receive sequence is only partially assembed by the driver, it shall abort + * the partially assembled frames for the sequence. Otherwise, if the + * unsolicited receive sequence has been completely assembled and passed to + * the Upper Layer Protocol (UPL), it then mark the per oxid status for the + * unsolicited sequence has been aborted. After that, it will issue a basic + * accept to accept the abort. + **/ +static void +lpfc_sli4_handle_unsol_abort(struct lpfc_vport *vport, + struct hbq_dmabuf *dmabuf) +{ + struct lpfc_hba *phba = vport->phba; + struct fc_frame_header fc_hdr; + uint32_t fctl; + bool aborted; + + /* Make a copy of fc_hdr before the dmabuf being released */ + memcpy(&fc_hdr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header)); + fctl = sli4_fctl_from_fc_hdr(&fc_hdr); + + if (fctl & FC_FC_EX_CTX) { + /* ABTS by responder to exchange, no cleanup needed */ + aborted = true; + } else { + /* ABTS by initiator to exchange, need to do cleanup */ + aborted = lpfc_sli4_abort_partial_seq(vport, dmabuf); + if (aborted == false) + aborted = lpfc_sli4_abort_ulp_seq(vport, dmabuf); + } + lpfc_in_buf_free(phba, &dmabuf->dbuf); + + /* Respond with BA_ACC or BA_RJT accordingly */ + lpfc_sli4_seq_abort_rsp(vport, &fc_hdr, aborted); +} + +/** + * lpfc_seq_complete - Indicates if a sequence is complete + * @dmabuf: pointer to a dmabuf that describes the FC sequence + * + * This function checks the sequence, starting with the frame described by + * @dmabuf, to see if all the frames associated with this sequence are present. + * the frames associated with this sequence are linked to the @dmabuf using the + * dbuf list. This function looks for two major things. 1) That the first frame + * has a sequence count of zero. 2) There is a frame with last frame of sequence + * set. 3) That there are no holes in the sequence count. The function will + * return 1 when the sequence is complete, otherwise it will return 0. + **/ +static int +lpfc_seq_complete(struct hbq_dmabuf *dmabuf) +{ + struct fc_frame_header *hdr; + struct lpfc_dmabuf *d_buf; + struct hbq_dmabuf *seq_dmabuf; + uint32_t fctl; + int seq_count = 0; + + hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; + /* make sure first fame of sequence has a sequence count of zero */ + if (hdr->fh_seq_cnt != seq_count) + return 0; + fctl = (hdr->fh_f_ctl[0] << 16 | + hdr->fh_f_ctl[1] << 8 | + hdr->fh_f_ctl[2]); + /* If last frame of sequence we can return success. */ + if (fctl & FC_FC_END_SEQ) + return 1; + list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) { + seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf); + hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; + /* If there is a hole in the sequence count then fail. */ + if (++seq_count != be16_to_cpu(hdr->fh_seq_cnt)) + return 0; + fctl = (hdr->fh_f_ctl[0] << 16 | + hdr->fh_f_ctl[1] << 8 | + hdr->fh_f_ctl[2]); + /* If last frame of sequence we can return success. */ + if (fctl & FC_FC_END_SEQ) + return 1; + } + return 0; +} + +/** + * lpfc_prep_seq - Prep sequence for ULP processing + * @vport: Pointer to the vport on which this sequence was received + * @dmabuf: pointer to a dmabuf that describes the FC sequence + * + * This function takes a sequence, described by a list of frames, and creates + * a list of iocbq structures to describe the sequence. This iocbq list will be + * used to issue to the generic unsolicited sequence handler. This routine + * returns a pointer to the first iocbq in the list. If the function is unable + * to allocate an iocbq then it throw out the received frames that were not + * able to be described and return a pointer to the first iocbq. If unable to + * allocate any iocbqs (including the first) this function will return NULL. + **/ +static struct lpfc_iocbq * +lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) +{ + struct hbq_dmabuf *hbq_buf; + struct lpfc_dmabuf *d_buf, *n_buf; + struct lpfc_iocbq *first_iocbq, *iocbq; + struct fc_frame_header *fc_hdr; + uint32_t sid; + uint32_t len, tot_len; + struct ulp_bde64 *pbde; + + fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; + /* remove from receive buffer list */ + list_del_init(&seq_dmabuf->hbuf.list); + lpfc_update_rcv_time_stamp(vport); + /* get the Remote Port's SID */ + sid = sli4_sid_from_fc_hdr(fc_hdr); + tot_len = 0; + /* Get an iocbq struct to fill in. */ + first_iocbq = lpfc_sli_get_iocbq(vport->phba); + if (first_iocbq) { + /* Initialize the first IOCB. */ + first_iocbq->iocb.unsli3.rcvsli3.acc_len = 0; + first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS; + + /* Check FC Header to see what TYPE of frame we are rcv'ing */ + if (sli4_type_from_fc_hdr(fc_hdr) == FC_TYPE_ELS) { + first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_ELS64_CX; + first_iocbq->iocb.un.rcvels.parmRo = + sli4_did_from_fc_hdr(fc_hdr); + first_iocbq->iocb.ulpPU = PARM_NPIV_DID; + } else + first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX; + first_iocbq->iocb.ulpContext = NO_XRI; + first_iocbq->iocb.unsli3.rcvsli3.ox_id = + be16_to_cpu(fc_hdr->fh_ox_id); + /* iocbq is prepped for internal consumption. Physical vpi. */ + first_iocbq->iocb.unsli3.rcvsli3.vpi = + vport->phba->vpi_ids[vport->vpi]; + /* put the first buffer into the first IOCBq */ + tot_len = bf_get(lpfc_rcqe_length, + &seq_dmabuf->cq_event.cqe.rcqe_cmpl); + + first_iocbq->context2 = &seq_dmabuf->dbuf; + first_iocbq->context3 = NULL; + first_iocbq->iocb.ulpBdeCount = 1; + if (tot_len > LPFC_DATA_BUF_SIZE) + first_iocbq->iocb.un.cont64[0].tus.f.bdeSize = + LPFC_DATA_BUF_SIZE; + else + first_iocbq->iocb.un.cont64[0].tus.f.bdeSize = tot_len; + + first_iocbq->iocb.un.rcvels.remoteID = sid; + + first_iocbq->iocb.unsli3.rcvsli3.acc_len = tot_len; + } + iocbq = first_iocbq; + /* + * Each IOCBq can have two Buffers assigned, so go through the list + * of buffers for this sequence and save two buffers in each IOCBq + */ + list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) { + if (!iocbq) { + lpfc_in_buf_free(vport->phba, d_buf); + continue; + } + if (!iocbq->context3) { + iocbq->context3 = d_buf; + iocbq->iocb.ulpBdeCount++; + /* We need to get the size out of the right CQE */ + hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); + len = bf_get(lpfc_rcqe_length, + &hbq_buf->cq_event.cqe.rcqe_cmpl); + pbde = (struct ulp_bde64 *) + &iocbq->iocb.unsli3.sli3Words[4]; + if (len > LPFC_DATA_BUF_SIZE) + pbde->tus.f.bdeSize = LPFC_DATA_BUF_SIZE; + else + pbde->tus.f.bdeSize = len; + + iocbq->iocb.unsli3.rcvsli3.acc_len += len; + tot_len += len; + } else { + iocbq = lpfc_sli_get_iocbq(vport->phba); + if (!iocbq) { + if (first_iocbq) { + first_iocbq->iocb.ulpStatus = + IOSTAT_FCP_RSP_ERROR; + first_iocbq->iocb.un.ulpWord[4] = + IOERR_NO_RESOURCES; + } + lpfc_in_buf_free(vport->phba, d_buf); + continue; + } + /* We need to get the size out of the right CQE */ + hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf); + len = bf_get(lpfc_rcqe_length, + &hbq_buf->cq_event.cqe.rcqe_cmpl); + iocbq->context2 = d_buf; + iocbq->context3 = NULL; + iocbq->iocb.ulpBdeCount = 1; + if (len > LPFC_DATA_BUF_SIZE) + iocbq->iocb.un.cont64[0].tus.f.bdeSize = + LPFC_DATA_BUF_SIZE; + else + iocbq->iocb.un.cont64[0].tus.f.bdeSize = len; + + tot_len += len; + iocbq->iocb.unsli3.rcvsli3.acc_len = tot_len; + + iocbq->iocb.un.rcvels.remoteID = sid; + list_add_tail(&iocbq->list, &first_iocbq->list); + } + } + return first_iocbq; +} + +static void +lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *vport, + struct hbq_dmabuf *seq_dmabuf) +{ + struct fc_frame_header *fc_hdr; + struct lpfc_iocbq *iocbq, *curr_iocb, *next_iocb; + struct lpfc_hba *phba = vport->phba; + + fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; + iocbq = lpfc_prep_seq(vport, seq_dmabuf); + if (!iocbq) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2707 Ring %d handler: Failed to allocate " + "iocb Rctl x%x Type x%x received\n", + LPFC_ELS_RING, + fc_hdr->fh_r_ctl, fc_hdr->fh_type); + return; + } + if (!lpfc_complete_unsol_iocb(phba, + &phba->sli.ring[LPFC_ELS_RING], + iocbq, fc_hdr->fh_r_ctl, + fc_hdr->fh_type)) + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2540 Ring %d handler: unexpected Rctl " + "x%x Type x%x received\n", + LPFC_ELS_RING, + fc_hdr->fh_r_ctl, fc_hdr->fh_type); + + /* Free iocb created in lpfc_prep_seq */ + list_for_each_entry_safe(curr_iocb, next_iocb, + &iocbq->list, list) { + list_del_init(&curr_iocb->list); + lpfc_sli_release_iocbq(phba, curr_iocb); + } + lpfc_sli_release_iocbq(phba, iocbq); +} + +/** + * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware + * @phba: Pointer to HBA context object. + * + * This function is called with no lock held. This function processes all + * the received buffers and gives it to upper layers when a received buffer + * indicates that it is the final frame in the sequence. The interrupt + * service routine processes received buffers at interrupt contexts and adds + * received dma buffers to the rb_pend_list queue and signals the worker thread. + * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the + * appropriate receive function when the final frame in a sequence is received. + **/ +void +lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba, + struct hbq_dmabuf *dmabuf) +{ + struct hbq_dmabuf *seq_dmabuf; + struct fc_frame_header *fc_hdr; + struct lpfc_vport *vport; + uint32_t fcfi; + uint32_t did; + + /* Process each received buffer */ + fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; + /* check to see if this a valid type of frame */ + if (lpfc_fc_frame_check(phba, fc_hdr)) { + lpfc_in_buf_free(phba, &dmabuf->dbuf); + return; + } + if ((bf_get(lpfc_cqe_code, + &dmabuf->cq_event.cqe.rcqe_cmpl) == CQE_CODE_RECEIVE_V1)) + fcfi = bf_get(lpfc_rcqe_fcf_id_v1, + &dmabuf->cq_event.cqe.rcqe_cmpl); + else + fcfi = bf_get(lpfc_rcqe_fcf_id, + &dmabuf->cq_event.cqe.rcqe_cmpl); + + vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi); + if (!vport) { + /* throw out the frame */ + lpfc_in_buf_free(phba, &dmabuf->dbuf); + return; + } + + /* d_id this frame is directed to */ + did = sli4_did_from_fc_hdr(fc_hdr); + + /* vport is registered unless we rcv a FLOGI directed to Fabric_DID */ + if (!(vport->vpi_state & LPFC_VPI_REGISTERED) && + (did != Fabric_DID)) { + /* + * Throw out the frame if we are not pt2pt. + * The pt2pt protocol allows for discovery frames + * to be received without a registered VPI. + */ + if (!(vport->fc_flag & FC_PT2PT) || + (phba->link_state == LPFC_HBA_READY)) { + lpfc_in_buf_free(phba, &dmabuf->dbuf); + return; + } + } + + /* Handle the basic abort sequence (BA_ABTS) event */ + if (fc_hdr->fh_r_ctl == FC_RCTL_BA_ABTS) { + lpfc_sli4_handle_unsol_abort(vport, dmabuf); + return; + } + + /* Link this frame */ + seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf); + if (!seq_dmabuf) { + /* unable to add frame to vport - throw it out */ + lpfc_in_buf_free(phba, &dmabuf->dbuf); + return; + } + /* If not last frame in sequence continue processing frames. */ + if (!lpfc_seq_complete(seq_dmabuf)) + return; + + /* Send the complete sequence to the upper layer protocol */ + lpfc_sli4_send_seq_to_ulp(vport, seq_dmabuf); +} + +/** + * lpfc_sli4_post_all_rpi_hdrs - Post the rpi header memory region to the port + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to post rpi header templates to the + * HBA consistent with the SLI-4 interface spec. This routine + * posts a SLI4_PAGE_SIZE memory region to the port to hold up to + * SLI4_PAGE_SIZE modulo 64 rpi context headers. + * + * This routine does not require any locks. It's usage is expected + * to be driver load or reset recovery when the driver is + * sequential. + * + * Return codes + * 0 - successful + * -EIO - The mailbox failed to complete successfully. + * When this error occurs, the driver is not guaranteed + * to have any rpi regions posted to the device and + * must either attempt to repost the regions or take a + * fatal error. + **/ +int +lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *phba) +{ + struct lpfc_rpi_hdr *rpi_page; + uint32_t rc = 0; + uint16_t lrpi = 0; + + /* SLI4 ports that support extents do not require RPI headers. */ + if (!phba->sli4_hba.rpi_hdrs_in_use) + goto exit; + if (phba->sli4_hba.extents_in_use) + return -EIO; + + list_for_each_entry(rpi_page, &phba->sli4_hba.lpfc_rpi_hdr_list, list) { + /* + * Assign the rpi headers a physical rpi only if the driver + * has not initialized those resources. A port reset only + * needs the headers posted. + */ + if (bf_get(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags) != + LPFC_RPI_RSRC_RDY) + rpi_page->start_rpi = phba->sli4_hba.rpi_ids[lrpi]; + + rc = lpfc_sli4_post_rpi_hdr(phba, rpi_page); + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2008 Error %d posting all rpi " + "headers\n", rc); + rc = -EIO; + break; + } + } + + exit: + bf_set(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, + LPFC_RPI_RSRC_RDY); + return rc; +} + +/** + * lpfc_sli4_post_rpi_hdr - Post an rpi header memory region to the port + * @phba: pointer to lpfc hba data structure. + * @rpi_page: pointer to the rpi memory region. + * + * This routine is invoked to post a single rpi header to the + * HBA consistent with the SLI-4 interface spec. This memory region + * maps up to 64 rpi context regions. + * + * Return codes + * 0 - successful + * -ENOMEM - No available memory + * -EIO - The mailbox failed to complete successfully. + **/ +int +lpfc_sli4_post_rpi_hdr(struct lpfc_hba *phba, struct lpfc_rpi_hdr *rpi_page) +{ + LPFC_MBOXQ_t *mboxq; + struct lpfc_mbx_post_hdr_tmpl *hdr_tmpl; + uint32_t rc = 0; + uint32_t shdr_status, shdr_add_status; + union lpfc_sli4_cfg_shdr *shdr; + + /* SLI4 ports that support extents do not require RPI headers. */ + if (!phba->sli4_hba.rpi_hdrs_in_use) + return rc; + if (phba->sli4_hba.extents_in_use) + return -EIO; + + /* The port is notified of the header region via a mailbox command. */ + mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2001 Unable to allocate memory for issuing " + "SLI_CONFIG_SPECIAL mailbox command\n"); + return -ENOMEM; + } + + /* Post all rpi memory regions to the port. */ + hdr_tmpl = &mboxq->u.mqe.un.hdr_tmpl; + lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_POST_HDR_TEMPLATE, + sizeof(struct lpfc_mbx_post_hdr_tmpl) - + sizeof(struct lpfc_sli4_cfg_mhdr), + LPFC_SLI4_MBX_EMBED); + + + /* Post the physical rpi to the port for this rpi header. */ + bf_set(lpfc_mbx_post_hdr_tmpl_rpi_offset, hdr_tmpl, + rpi_page->start_rpi); + bf_set(lpfc_mbx_post_hdr_tmpl_page_cnt, + hdr_tmpl, rpi_page->page_count); + + hdr_tmpl->rpi_paddr_lo = putPaddrLow(rpi_page->dmabuf->phys); + hdr_tmpl->rpi_paddr_hi = putPaddrHigh(rpi_page->dmabuf->phys); + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + shdr = (union lpfc_sli4_cfg_shdr *) &hdr_tmpl->header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (rc != MBX_TIMEOUT) + mempool_free(mboxq, phba->mbox_mem_pool); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2514 POST_RPI_HDR mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + rc = -ENXIO; + } + return rc; +} + +/** + * lpfc_sli4_alloc_rpi - Get an available rpi in the device's range + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to post rpi header templates to the + * HBA consistent with the SLI-4 interface spec. This routine + * posts a SLI4_PAGE_SIZE memory region to the port to hold up to + * SLI4_PAGE_SIZE modulo 64 rpi context headers. + * + * Returns + * A nonzero rpi defined as rpi_base <= rpi < max_rpi if successful + * LPFC_RPI_ALLOC_ERROR if no rpis are available. + **/ +int +lpfc_sli4_alloc_rpi(struct lpfc_hba *phba) +{ + unsigned long rpi; + uint16_t max_rpi, rpi_limit; + uint16_t rpi_remaining, lrpi = 0; + struct lpfc_rpi_hdr *rpi_hdr; + unsigned long iflag; + + /* + * Fetch the next logical rpi. Because this index is logical, + * the driver starts at 0 each time. + */ + spin_lock_irqsave(&phba->hbalock, iflag); + max_rpi = phba->sli4_hba.max_cfg_param.max_rpi; + rpi_limit = phba->sli4_hba.next_rpi; + + rpi = find_next_zero_bit(phba->sli4_hba.rpi_bmask, rpi_limit, 0); + if (rpi >= rpi_limit) + rpi = LPFC_RPI_ALLOC_ERROR; + else { + set_bit(rpi, phba->sli4_hba.rpi_bmask); + phba->sli4_hba.max_cfg_param.rpi_used++; + phba->sli4_hba.rpi_count++; + } + lpfc_printf_log(phba, KERN_INFO, LOG_SLI, + "0001 rpi:%x max:%x lim:%x\n", + (int) rpi, max_rpi, rpi_limit); + + /* + * Don't try to allocate more rpi header regions if the device limit + * has been exhausted. + */ + if ((rpi == LPFC_RPI_ALLOC_ERROR) && + (phba->sli4_hba.rpi_count >= max_rpi)) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + return rpi; + } + + /* + * RPI header postings are not required for SLI4 ports capable of + * extents. + */ + if (!phba->sli4_hba.rpi_hdrs_in_use) { + spin_unlock_irqrestore(&phba->hbalock, iflag); + return rpi; + } + + /* + * If the driver is running low on rpi resources, allocate another + * page now. Note that the next_rpi value is used because + * it represents how many are actually in use whereas max_rpi notes + * how many are supported max by the device. + */ + rpi_remaining = phba->sli4_hba.next_rpi - phba->sli4_hba.rpi_count; + spin_unlock_irqrestore(&phba->hbalock, iflag); + if (rpi_remaining < LPFC_RPI_LOW_WATER_MARK) { + rpi_hdr = lpfc_sli4_create_rpi_hdr(phba); + if (!rpi_hdr) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2002 Error Could not grow rpi " + "count\n"); + } else { + lrpi = rpi_hdr->start_rpi; + rpi_hdr->start_rpi = phba->sli4_hba.rpi_ids[lrpi]; + lpfc_sli4_post_rpi_hdr(phba, rpi_hdr); + } + } + + return rpi; +} + +/** + * lpfc_sli4_free_rpi - Release an rpi for reuse. + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to release an rpi to the pool of + * available rpis maintained by the driver. + **/ +static void +__lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi) +{ + if (test_and_clear_bit(rpi, phba->sli4_hba.rpi_bmask)) { + phba->sli4_hba.rpi_count--; + phba->sli4_hba.max_cfg_param.rpi_used--; + } +} + +/** + * lpfc_sli4_free_rpi - Release an rpi for reuse. + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to release an rpi to the pool of + * available rpis maintained by the driver. + **/ +void +lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi) +{ + spin_lock_irq(&phba->hbalock); + __lpfc_sli4_free_rpi(phba, rpi); + spin_unlock_irq(&phba->hbalock); +} + +/** + * lpfc_sli4_remove_rpis - Remove the rpi bitmask region + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to remove the memory region that + * provided rpi via a bitmask. + **/ +void +lpfc_sli4_remove_rpis(struct lpfc_hba *phba) +{ + kfree(phba->sli4_hba.rpi_bmask); + kfree(phba->sli4_hba.rpi_ids); + bf_set(lpfc_rpi_rsrc_rdy, &phba->sli4_hba.sli4_flags, 0); +} + +/** + * lpfc_sli4_resume_rpi - Remove the rpi bitmask region + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to remove the memory region that + * provided rpi via a bitmask. + **/ +int +lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp, + void (*cmpl)(struct lpfc_hba *, LPFC_MBOXQ_t *), void *arg) +{ + LPFC_MBOXQ_t *mboxq; + struct lpfc_hba *phba = ndlp->phba; + int rc; + + /* The port is notified of the header region via a mailbox command. */ + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) + return -ENOMEM; + + /* Post all rpi memory regions to the port. */ + lpfc_resume_rpi(mboxq, ndlp); + if (cmpl) { + mboxq->mbox_cmpl = cmpl; + mboxq->context1 = arg; + mboxq->context2 = ndlp; + } else + mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + mboxq->vport = ndlp->vport; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2010 Resume RPI Mailbox failed " + "status %d, mbxStatus x%x\n", rc, + bf_get(lpfc_mqe_status, &mboxq->u.mqe)); + mempool_free(mboxq, phba->mbox_mem_pool); + return -EIO; + } + return 0; +} + +/** + * lpfc_sli4_init_vpi - Initialize a vpi with the port + * @vport: Pointer to the vport for which the vpi is being initialized + * + * This routine is invoked to activate a vpi with the port. + * + * Returns: + * 0 success + * -Evalue otherwise + **/ +int +lpfc_sli4_init_vpi(struct lpfc_vport *vport) +{ + LPFC_MBOXQ_t *mboxq; + int rc = 0; + int retval = MBX_SUCCESS; + uint32_t mbox_tmo; + struct lpfc_hba *phba = vport->phba; + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) + return -ENOMEM; + lpfc_init_vpi(phba, mboxq, vport->vpi); + mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq); + rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo); + if (rc != MBX_SUCCESS) { + lpfc_printf_vlog(vport, KERN_ERR, LOG_SLI, + "2022 INIT VPI Mailbox failed " + "status %d, mbxStatus x%x\n", rc, + bf_get(lpfc_mqe_status, &mboxq->u.mqe)); + retval = -EIO; + } + if (rc != MBX_TIMEOUT) + mempool_free(mboxq, vport->phba->mbox_mem_pool); + + return retval; +} + +/** + * lpfc_mbx_cmpl_add_fcf_record - add fcf mbox completion handler. + * @phba: pointer to lpfc hba data structure. + * @mboxq: Pointer to mailbox object. + * + * This routine is invoked to manually add a single FCF record. The caller + * must pass a completely initialized FCF_Record. This routine takes + * care of the nonembedded mailbox operations. + **/ +static void +lpfc_mbx_cmpl_add_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) +{ + void *virt_addr; + union lpfc_sli4_cfg_shdr *shdr; + uint32_t shdr_status, shdr_add_status; + + virt_addr = mboxq->sge_array->addr[0]; + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr = (union lpfc_sli4_cfg_shdr *) virt_addr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + + if ((shdr_status || shdr_add_status) && + (shdr_status != STATUS_FCF_IN_USE)) + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2558 ADD_FCF_RECORD mailbox failed with " + "status x%x add_status x%x\n", + shdr_status, shdr_add_status); + + lpfc_sli4_mbox_cmd_free(phba, mboxq); +} + +/** + * lpfc_sli4_add_fcf_record - Manually add an FCF Record. + * @phba: pointer to lpfc hba data structure. + * @fcf_record: pointer to the initialized fcf record to add. + * + * This routine is invoked to manually add a single FCF record. The caller + * must pass a completely initialized FCF_Record. This routine takes + * care of the nonembedded mailbox operations. + **/ +int +lpfc_sli4_add_fcf_record(struct lpfc_hba *phba, struct fcf_record *fcf_record) +{ + int rc = 0; + LPFC_MBOXQ_t *mboxq; + uint8_t *bytep; + void *virt_addr; + dma_addr_t phys_addr; + struct lpfc_mbx_sge sge; + uint32_t alloc_len, req_len; + uint32_t fcfindex; + + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2009 Failed to allocate mbox for ADD_FCF cmd\n"); + return -ENOMEM; + } + + req_len = sizeof(struct fcf_record) + sizeof(union lpfc_sli4_cfg_shdr) + + sizeof(uint32_t); + + /* Allocate DMA memory and set up the non-embedded mailbox command */ + alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_ADD_FCF, + req_len, LPFC_SLI4_MBX_NEMBED); + if (alloc_len < req_len) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2523 Allocated DMA memory size (x%x) is " + "less than the requested DMA memory " + "size (x%x)\n", alloc_len, req_len); + lpfc_sli4_mbox_cmd_free(phba, mboxq); + return -ENOMEM; + } + + /* + * Get the first SGE entry from the non-embedded DMA memory. This + * routine only uses a single SGE. + */ + lpfc_sli4_mbx_sge_get(mboxq, 0, &sge); + phys_addr = getPaddr(sge.pa_hi, sge.pa_lo); + virt_addr = mboxq->sge_array->addr[0]; + /* + * Configure the FCF record for FCFI 0. This is the driver's + * hardcoded default and gets used in nonFIP mode. + */ + fcfindex = bf_get(lpfc_fcf_record_fcf_index, fcf_record); + bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr); + lpfc_sli_pcimem_bcopy(&fcfindex, bytep, sizeof(uint32_t)); + + /* + * Copy the fcf_index and the FCF Record Data. The data starts after + * the FCoE header plus word10. The data copy needs to be endian + * correct. + */ + bytep += sizeof(uint32_t); + lpfc_sli_pcimem_bcopy(fcf_record, bytep, sizeof(struct fcf_record)); + mboxq->vport = phba->pport; + mboxq->mbox_cmpl = lpfc_mbx_cmpl_add_fcf_record; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2515 ADD_FCF_RECORD mailbox failed with " + "status 0x%x\n", rc); + lpfc_sli4_mbox_cmd_free(phba, mboxq); + rc = -EIO; + } else + rc = 0; + + return rc; +} + +/** + * lpfc_sli4_build_dflt_fcf_record - Build the driver's default FCF Record. + * @phba: pointer to lpfc hba data structure. + * @fcf_record: pointer to the fcf record to write the default data. + * @fcf_index: FCF table entry index. + * + * This routine is invoked to build the driver's default FCF record. The + * values used are hardcoded. This routine handles memory initialization. + * + **/ +void +lpfc_sli4_build_dflt_fcf_record(struct lpfc_hba *phba, + struct fcf_record *fcf_record, + uint16_t fcf_index) +{ + memset(fcf_record, 0, sizeof(struct fcf_record)); + fcf_record->max_rcv_size = LPFC_FCOE_MAX_RCV_SIZE; + fcf_record->fka_adv_period = LPFC_FCOE_FKA_ADV_PER; + fcf_record->fip_priority = LPFC_FCOE_FIP_PRIORITY; + bf_set(lpfc_fcf_record_mac_0, fcf_record, phba->fc_map[0]); + bf_set(lpfc_fcf_record_mac_1, fcf_record, phba->fc_map[1]); + bf_set(lpfc_fcf_record_mac_2, fcf_record, phba->fc_map[2]); + bf_set(lpfc_fcf_record_mac_3, fcf_record, LPFC_FCOE_FCF_MAC3); + bf_set(lpfc_fcf_record_mac_4, fcf_record, LPFC_FCOE_FCF_MAC4); + bf_set(lpfc_fcf_record_mac_5, fcf_record, LPFC_FCOE_FCF_MAC5); + bf_set(lpfc_fcf_record_fc_map_0, fcf_record, phba->fc_map[0]); + bf_set(lpfc_fcf_record_fc_map_1, fcf_record, phba->fc_map[1]); + bf_set(lpfc_fcf_record_fc_map_2, fcf_record, phba->fc_map[2]); + bf_set(lpfc_fcf_record_fcf_valid, fcf_record, 1); + bf_set(lpfc_fcf_record_fcf_avail, fcf_record, 1); + bf_set(lpfc_fcf_record_fcf_index, fcf_record, fcf_index); + bf_set(lpfc_fcf_record_mac_addr_prov, fcf_record, + LPFC_FCF_FPMA | LPFC_FCF_SPMA); + /* Set the VLAN bit map */ + if (phba->valid_vlan) { + fcf_record->vlan_bitmap[phba->vlan_id / 8] + = 1 << (phba->vlan_id % 8); + } +} + +/** + * lpfc_sli4_fcf_scan_read_fcf_rec - Read hba fcf record for fcf scan. + * @phba: pointer to lpfc hba data structure. + * @fcf_index: FCF table entry offset. + * + * This routine is invoked to scan the entire FCF table by reading FCF + * record and processing it one at a time starting from the @fcf_index + * for initial FCF discovery or fast FCF failover rediscovery. + * + * Return 0 if the mailbox command is submitted successfully, none 0 + * otherwise. + **/ +int +lpfc_sli4_fcf_scan_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index) +{ + int rc = 0, error; + LPFC_MBOXQ_t *mboxq; + + phba->fcoe_eventtag_at_fcf_scan = phba->fcoe_eventtag; + phba->fcoe_cvl_eventtag_attn = phba->fcoe_cvl_eventtag; + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2000 Failed to allocate mbox for " + "READ_FCF cmd\n"); + error = -ENOMEM; + goto fail_fcf_scan; + } + /* Construct the read FCF record mailbox command */ + rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index); + if (rc) { + error = -EINVAL; + goto fail_fcf_scan; + } + /* Issue the mailbox command asynchronously */ + mboxq->vport = phba->pport; + mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_scan_read_fcf_rec; + + spin_lock_irq(&phba->hbalock); + phba->hba_flag |= FCF_TS_INPROG; + spin_unlock_irq(&phba->hbalock); + + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) + error = -EIO; + else { + /* Reset eligible FCF count for new scan */ + if (fcf_index == LPFC_FCOE_FCF_GET_FIRST) + phba->fcf.eligible_fcf_cnt = 0; + error = 0; + } +fail_fcf_scan: + if (error) { + if (mboxq) + lpfc_sli4_mbox_cmd_free(phba, mboxq); + /* FCF scan failed, clear FCF_TS_INPROG flag */ + spin_lock_irq(&phba->hbalock); + phba->hba_flag &= ~FCF_TS_INPROG; + spin_unlock_irq(&phba->hbalock); + } + return error; +} + +/** + * lpfc_sli4_fcf_rr_read_fcf_rec - Read hba fcf record for roundrobin fcf. + * @phba: pointer to lpfc hba data structure. + * @fcf_index: FCF table entry offset. + * + * This routine is invoked to read an FCF record indicated by @fcf_index + * and to use it for FLOGI roundrobin FCF failover. + * + * Return 0 if the mailbox command is submitted successfully, none 0 + * otherwise. + **/ +int +lpfc_sli4_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index) +{ + int rc = 0, error; + LPFC_MBOXQ_t *mboxq; + + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT, + "2763 Failed to allocate mbox for " + "READ_FCF cmd\n"); + error = -ENOMEM; + goto fail_fcf_read; + } + /* Construct the read FCF record mailbox command */ + rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index); + if (rc) { + error = -EINVAL; + goto fail_fcf_read; + } + /* Issue the mailbox command asynchronously */ + mboxq->vport = phba->pport; + mboxq->mbox_cmpl = lpfc_mbx_cmpl_fcf_rr_read_fcf_rec; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) + error = -EIO; + else + error = 0; + +fail_fcf_read: + if (error && mboxq) + lpfc_sli4_mbox_cmd_free(phba, mboxq); + return error; +} + +/** + * lpfc_sli4_read_fcf_rec - Read hba fcf record for update eligible fcf bmask. + * @phba: pointer to lpfc hba data structure. + * @fcf_index: FCF table entry offset. + * + * This routine is invoked to read an FCF record indicated by @fcf_index to + * determine whether it's eligible for FLOGI roundrobin failover list. + * + * Return 0 if the mailbox command is submitted successfully, none 0 + * otherwise. + **/ +int +lpfc_sli4_read_fcf_rec(struct lpfc_hba *phba, uint16_t fcf_index) +{ + int rc = 0, error; + LPFC_MBOXQ_t *mboxq; + + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_INIT, + "2758 Failed to allocate mbox for " + "READ_FCF cmd\n"); + error = -ENOMEM; + goto fail_fcf_read; + } + /* Construct the read FCF record mailbox command */ + rc = lpfc_sli4_mbx_read_fcf_rec(phba, mboxq, fcf_index); + if (rc) { + error = -EINVAL; + goto fail_fcf_read; + } + /* Issue the mailbox command asynchronously */ + mboxq->vport = phba->pport; + mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_rec; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT); + if (rc == MBX_NOT_FINISHED) + error = -EIO; + else + error = 0; + +fail_fcf_read: + if (error && mboxq) + lpfc_sli4_mbox_cmd_free(phba, mboxq); + return error; +} + +/** + * lpfc_check_next_fcf_pri + * phba pointer to the lpfc_hba struct for this port. + * This routine is called from the lpfc_sli4_fcf_rr_next_index_get + * routine when the rr_bmask is empty. The FCF indecies are put into the + * rr_bmask based on their priority level. Starting from the highest priority + * to the lowest. The most likely FCF candidate will be in the highest + * priority group. When this routine is called it searches the fcf_pri list for + * next lowest priority group and repopulates the rr_bmask with only those + * fcf_indexes. + * returns: + * 1=success 0=failure + **/ +static int +lpfc_check_next_fcf_pri_level(struct lpfc_hba *phba) +{ + uint16_t next_fcf_pri; + uint16_t last_index; + struct lpfc_fcf_pri *fcf_pri; + int rc; + int ret = 0; + + last_index = find_first_bit(phba->fcf.fcf_rr_bmask, + LPFC_SLI4_FCF_TBL_INDX_MAX); + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "3060 Last IDX %d\n", last_index); + + /* Verify the priority list has 2 or more entries */ + spin_lock_irq(&phba->hbalock); + if (list_empty(&phba->fcf.fcf_pri_list) || + list_is_singular(&phba->fcf.fcf_pri_list)) { + spin_unlock_irq(&phba->hbalock); + lpfc_printf_log(phba, KERN_ERR, LOG_FIP, + "3061 Last IDX %d\n", last_index); + return 0; /* Empty rr list */ + } + spin_unlock_irq(&phba->hbalock); + + next_fcf_pri = 0; + /* + * Clear the rr_bmask and set all of the bits that are at this + * priority. + */ + memset(phba->fcf.fcf_rr_bmask, 0, + sizeof(*phba->fcf.fcf_rr_bmask)); + spin_lock_irq(&phba->hbalock); + list_for_each_entry(fcf_pri, &phba->fcf.fcf_pri_list, list) { + if (fcf_pri->fcf_rec.flag & LPFC_FCF_FLOGI_FAILED) + continue; + /* + * the 1st priority that has not FLOGI failed + * will be the highest. + */ + if (!next_fcf_pri) + next_fcf_pri = fcf_pri->fcf_rec.priority; + spin_unlock_irq(&phba->hbalock); + if (fcf_pri->fcf_rec.priority == next_fcf_pri) { + rc = lpfc_sli4_fcf_rr_index_set(phba, + fcf_pri->fcf_rec.fcf_index); + if (rc) + return 0; + } + spin_lock_irq(&phba->hbalock); + } + /* + * if next_fcf_pri was not set above and the list is not empty then + * we have failed flogis on all of them. So reset flogi failed + * and start at the beginning. + */ + if (!next_fcf_pri && !list_empty(&phba->fcf.fcf_pri_list)) { + list_for_each_entry(fcf_pri, &phba->fcf.fcf_pri_list, list) { + fcf_pri->fcf_rec.flag &= ~LPFC_FCF_FLOGI_FAILED; + /* + * the 1st priority that has not FLOGI failed + * will be the highest. + */ + if (!next_fcf_pri) + next_fcf_pri = fcf_pri->fcf_rec.priority; + spin_unlock_irq(&phba->hbalock); + if (fcf_pri->fcf_rec.priority == next_fcf_pri) { + rc = lpfc_sli4_fcf_rr_index_set(phba, + fcf_pri->fcf_rec.fcf_index); + if (rc) + return 0; + } + spin_lock_irq(&phba->hbalock); + } + } else + ret = 1; + spin_unlock_irq(&phba->hbalock); + + return ret; +} +/** + * lpfc_sli4_fcf_rr_next_index_get - Get next eligible fcf record index + * @phba: pointer to lpfc hba data structure. + * + * This routine is to get the next eligible FCF record index in a round + * robin fashion. If the next eligible FCF record index equals to the + * initial roundrobin FCF record index, LPFC_FCOE_FCF_NEXT_NONE (0xFFFF) + * shall be returned, otherwise, the next eligible FCF record's index + * shall be returned. + **/ +uint16_t +lpfc_sli4_fcf_rr_next_index_get(struct lpfc_hba *phba) +{ + uint16_t next_fcf_index; + +initial_priority: + /* Search start from next bit of currently registered FCF index */ + next_fcf_index = phba->fcf.current_rec.fcf_indx; + +next_priority: + /* Determine the next fcf index to check */ + next_fcf_index = (next_fcf_index + 1) % LPFC_SLI4_FCF_TBL_INDX_MAX; + next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask, + LPFC_SLI4_FCF_TBL_INDX_MAX, + next_fcf_index); + + /* Wrap around condition on phba->fcf.fcf_rr_bmask */ + if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { + /* + * If we have wrapped then we need to clear the bits that + * have been tested so that we can detect when we should + * change the priority level. + */ + next_fcf_index = find_next_bit(phba->fcf.fcf_rr_bmask, + LPFC_SLI4_FCF_TBL_INDX_MAX, 0); + } + + + /* Check roundrobin failover list empty condition */ + if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX || + next_fcf_index == phba->fcf.current_rec.fcf_indx) { + /* + * If next fcf index is not found check if there are lower + * Priority level fcf's in the fcf_priority list. + * Set up the rr_bmask with all of the avaiable fcf bits + * at that level and continue the selection process. + */ + if (lpfc_check_next_fcf_pri_level(phba)) + goto initial_priority; + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "2844 No roundrobin failover FCF available\n"); + if (next_fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) + return LPFC_FCOE_FCF_NEXT_NONE; + else { + lpfc_printf_log(phba, KERN_WARNING, LOG_FIP, + "3063 Only FCF available idx %d, flag %x\n", + next_fcf_index, + phba->fcf.fcf_pri[next_fcf_index].fcf_rec.flag); + return next_fcf_index; + } + } + + if (next_fcf_index < LPFC_SLI4_FCF_TBL_INDX_MAX && + phba->fcf.fcf_pri[next_fcf_index].fcf_rec.flag & + LPFC_FCF_FLOGI_FAILED) + goto next_priority; + + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2845 Get next roundrobin failover FCF (x%x)\n", + next_fcf_index); + + return next_fcf_index; +} + +/** + * lpfc_sli4_fcf_rr_index_set - Set bmask with eligible fcf record index + * @phba: pointer to lpfc hba data structure. + * + * This routine sets the FCF record index in to the eligible bmask for + * roundrobin failover search. It checks to make sure that the index + * does not go beyond the range of the driver allocated bmask dimension + * before setting the bit. + * + * Returns 0 if the index bit successfully set, otherwise, it returns + * -EINVAL. + **/ +int +lpfc_sli4_fcf_rr_index_set(struct lpfc_hba *phba, uint16_t fcf_index) +{ + if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { + lpfc_printf_log(phba, KERN_ERR, LOG_FIP, + "2610 FCF (x%x) reached driver's book " + "keeping dimension:x%x\n", + fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX); + return -EINVAL; + } + /* Set the eligible FCF record index bmask */ + set_bit(fcf_index, phba->fcf.fcf_rr_bmask); + + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2790 Set FCF (x%x) to roundrobin FCF failover " + "bmask\n", fcf_index); + + return 0; +} + +/** + * lpfc_sli4_fcf_rr_index_clear - Clear bmask from eligible fcf record index + * @phba: pointer to lpfc hba data structure. + * + * This routine clears the FCF record index from the eligible bmask for + * roundrobin failover search. It checks to make sure that the index + * does not go beyond the range of the driver allocated bmask dimension + * before clearing the bit. + **/ +void +lpfc_sli4_fcf_rr_index_clear(struct lpfc_hba *phba, uint16_t fcf_index) +{ + struct lpfc_fcf_pri *fcf_pri, *fcf_pri_next; + if (fcf_index >= LPFC_SLI4_FCF_TBL_INDX_MAX) { + lpfc_printf_log(phba, KERN_ERR, LOG_FIP, + "2762 FCF (x%x) reached driver's book " + "keeping dimension:x%x\n", + fcf_index, LPFC_SLI4_FCF_TBL_INDX_MAX); + return; + } + /* Clear the eligible FCF record index bmask */ + spin_lock_irq(&phba->hbalock); + list_for_each_entry_safe(fcf_pri, fcf_pri_next, &phba->fcf.fcf_pri_list, + list) { + if (fcf_pri->fcf_rec.fcf_index == fcf_index) { + list_del_init(&fcf_pri->list); + break; + } + } + spin_unlock_irq(&phba->hbalock); + clear_bit(fcf_index, phba->fcf.fcf_rr_bmask); + + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2791 Clear FCF (x%x) from roundrobin failover " + "bmask\n", fcf_index); +} + +/** + * lpfc_mbx_cmpl_redisc_fcf_table - completion routine for rediscover FCF table + * @phba: pointer to lpfc hba data structure. + * + * This routine is the completion routine for the rediscover FCF table mailbox + * command. If the mailbox command returned failure, it will try to stop the + * FCF rediscover wait timer. + **/ +static void +lpfc_mbx_cmpl_redisc_fcf_table(struct lpfc_hba *phba, LPFC_MBOXQ_t *mbox) +{ + struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf; + uint32_t shdr_status, shdr_add_status; + + redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl; + + shdr_status = bf_get(lpfc_mbox_hdr_status, + &redisc_fcf->header.cfg_shdr.response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, + &redisc_fcf->header.cfg_shdr.response); + if (shdr_status || shdr_add_status) { + lpfc_printf_log(phba, KERN_ERR, LOG_FIP, + "2746 Requesting for FCF rediscovery failed " + "status x%x add_status x%x\n", + shdr_status, shdr_add_status); + if (phba->fcf.fcf_flag & FCF_ACVL_DISC) { + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_ACVL_DISC; + spin_unlock_irq(&phba->hbalock); + /* + * CVL event triggered FCF rediscover request failed, + * last resort to re-try current registered FCF entry. + */ + lpfc_retry_pport_discovery(phba); + } else { + spin_lock_irq(&phba->hbalock); + phba->fcf.fcf_flag &= ~FCF_DEAD_DISC; + spin_unlock_irq(&phba->hbalock); + /* + * DEAD FCF event triggered FCF rediscover request + * failed, last resort to fail over as a link down + * to FCF registration. + */ + lpfc_sli4_fcf_dead_failthrough(phba); + } + } else { + lpfc_printf_log(phba, KERN_INFO, LOG_FIP, + "2775 Start FCF rediscover quiescent timer\n"); + /* + * Start FCF rediscovery wait timer for pending FCF + * before rescan FCF record table. + */ + lpfc_fcf_redisc_wait_start_timer(phba); + } + + mempool_free(mbox, phba->mbox_mem_pool); +} + +/** + * lpfc_sli4_redisc_fcf_table - Request to rediscover entire FCF table by port. + * @phba: pointer to lpfc hba data structure. + * + * This routine is invoked to request for rediscovery of the entire FCF table + * by the port. + **/ +int +lpfc_sli4_redisc_fcf_table(struct lpfc_hba *phba) +{ + LPFC_MBOXQ_t *mbox; + struct lpfc_mbx_redisc_fcf_tbl *redisc_fcf; + int rc, length; + + /* Cancel retry delay timers to all vports before FCF rediscover */ + lpfc_cancel_all_vport_retry_delay_timer(phba); + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2745 Failed to allocate mbox for " + "requesting FCF rediscover.\n"); + return -ENOMEM; + } + + length = (sizeof(struct lpfc_mbx_redisc_fcf_tbl) - + sizeof(struct lpfc_sli4_cfg_mhdr)); + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, + LPFC_MBOX_OPCODE_FCOE_REDISCOVER_FCF, + length, LPFC_SLI4_MBX_EMBED); + + redisc_fcf = &mbox->u.mqe.un.redisc_fcf_tbl; + /* Set count to 0 for invalidating the entire FCF database */ + bf_set(lpfc_mbx_redisc_fcf_count, redisc_fcf, 0); + + /* Issue the mailbox command asynchronously */ + mbox->vport = phba->pport; + mbox->mbox_cmpl = lpfc_mbx_cmpl_redisc_fcf_table; + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT); + + if (rc == MBX_NOT_FINISHED) { + mempool_free(mbox, phba->mbox_mem_pool); + return -EIO; + } + return 0; +} + +/** + * lpfc_sli4_fcf_dead_failthrough - Failthrough routine to fcf dead event + * @phba: pointer to lpfc hba data structure. + * + * This function is the failover routine as a last resort to the FCF DEAD + * event when driver failed to perform fast FCF failover. + **/ +void +lpfc_sli4_fcf_dead_failthrough(struct lpfc_hba *phba) +{ + uint32_t link_state; + + /* + * Last resort as FCF DEAD event failover will treat this as + * a link down, but save the link state because we don't want + * it to be changed to Link Down unless it is already down. + */ + link_state = phba->link_state; + lpfc_linkdown(phba); + phba->link_state = link_state; + + /* Unregister FCF if no devices connected to it */ + lpfc_unregister_unused_fcf(phba); +} + +/** + * lpfc_sli_get_config_region23 - Get sli3 port region 23 data. + * @phba: pointer to lpfc hba data structure. + * @rgn23_data: pointer to configure region 23 data. + * + * This function gets SLI3 port configure region 23 data through memory dump + * mailbox command. When it successfully retrieves data, the size of the data + * will be returned, otherwise, 0 will be returned. + **/ +static uint32_t +lpfc_sli_get_config_region23(struct lpfc_hba *phba, char *rgn23_data) +{ + LPFC_MBOXQ_t *pmb = NULL; + MAILBOX_t *mb; + uint32_t offset = 0; + int rc; + + if (!rgn23_data) + return 0; + + pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!pmb) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2600 failed to allocate mailbox memory\n"); + return 0; + } + mb = &pmb->u.mb; + + do { + lpfc_dump_mem(phba, pmb, offset, DMP_REGION_23); + rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); + + if (rc != MBX_SUCCESS) { + lpfc_printf_log(phba, KERN_INFO, LOG_INIT, + "2601 failed to read config " + "region 23, rc 0x%x Status 0x%x\n", + rc, mb->mbxStatus); + mb->un.varDmp.word_cnt = 0; + } + /* + * dump mem may return a zero when finished or we got a + * mailbox error, either way we are done. + */ + if (mb->un.varDmp.word_cnt == 0) + break; + if (mb->un.varDmp.word_cnt > DMP_RGN23_SIZE - offset) + mb->un.varDmp.word_cnt = DMP_RGN23_SIZE - offset; + + lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, + rgn23_data + offset, + mb->un.varDmp.word_cnt); + offset += mb->un.varDmp.word_cnt; + } while (mb->un.varDmp.word_cnt && offset < DMP_RGN23_SIZE); + + mempool_free(pmb, phba->mbox_mem_pool); + return offset; +} + +/** + * lpfc_sli4_get_config_region23 - Get sli4 port region 23 data. + * @phba: pointer to lpfc hba data structure. + * @rgn23_data: pointer to configure region 23 data. + * + * This function gets SLI4 port configure region 23 data through memory dump + * mailbox command. When it successfully retrieves data, the size of the data + * will be returned, otherwise, 0 will be returned. + **/ +static uint32_t +lpfc_sli4_get_config_region23(struct lpfc_hba *phba, char *rgn23_data) +{ + LPFC_MBOXQ_t *mboxq = NULL; + struct lpfc_dmabuf *mp = NULL; + struct lpfc_mqe *mqe; + uint32_t data_length = 0; + int rc; + + if (!rgn23_data) + return 0; + + mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mboxq) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3105 failed to allocate mailbox memory\n"); + return 0; + } + + if (lpfc_sli4_dump_cfg_rg23(phba, mboxq)) + goto out; + mqe = &mboxq->u.mqe; + mp = (struct lpfc_dmabuf *) mboxq->context1; + rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL); + if (rc) + goto out; + data_length = mqe->un.mb_words[5]; + if (data_length == 0) + goto out; + if (data_length > DMP_RGN23_SIZE) { + data_length = 0; + goto out; + } + lpfc_sli_pcimem_bcopy((char *)mp->virt, rgn23_data, data_length); +out: + mempool_free(mboxq, phba->mbox_mem_pool); + if (mp) { + lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + } + return data_length; +} + +/** + * lpfc_sli_read_link_ste - Read region 23 to decide if link is disabled. + * @phba: pointer to lpfc hba data structure. + * + * This function read region 23 and parse TLV for port status to + * decide if the user disaled the port. If the TLV indicates the + * port is disabled, the hba_flag is set accordingly. + **/ +void +lpfc_sli_read_link_ste(struct lpfc_hba *phba) +{ + uint8_t *rgn23_data = NULL; + uint32_t if_type, data_size, sub_tlv_len, tlv_offset; + uint32_t offset = 0; + + /* Get adapter Region 23 data */ + rgn23_data = kzalloc(DMP_RGN23_SIZE, GFP_KERNEL); + if (!rgn23_data) + goto out; + + if (phba->sli_rev < LPFC_SLI_REV4) + data_size = lpfc_sli_get_config_region23(phba, rgn23_data); + else { + if_type = bf_get(lpfc_sli_intf_if_type, + &phba->sli4_hba.sli_intf); + if (if_type == LPFC_SLI_INTF_IF_TYPE_0) + goto out; + data_size = lpfc_sli4_get_config_region23(phba, rgn23_data); + } + + if (!data_size) + goto out; + + /* Check the region signature first */ + if (memcmp(&rgn23_data[offset], LPFC_REGION23_SIGNATURE, 4)) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2619 Config region 23 has bad signature\n"); + goto out; + } + offset += 4; + + /* Check the data structure version */ + if (rgn23_data[offset] != LPFC_REGION23_VERSION) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "2620 Config region 23 has bad version\n"); + goto out; + } + offset += 4; + + /* Parse TLV entries in the region */ + while (offset < data_size) { + if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) + break; + /* + * If the TLV is not driver specific TLV or driver id is + * not linux driver id, skip the record. + */ + if ((rgn23_data[offset] != DRIVER_SPECIFIC_TYPE) || + (rgn23_data[offset + 2] != LINUX_DRIVER_ID) || + (rgn23_data[offset + 3] != 0)) { + offset += rgn23_data[offset + 1] * 4 + 4; + continue; + } + + /* Driver found a driver specific TLV in the config region */ + sub_tlv_len = rgn23_data[offset + 1] * 4; + offset += 4; + tlv_offset = 0; + + /* + * Search for configured port state sub-TLV. + */ + while ((offset < data_size) && + (tlv_offset < sub_tlv_len)) { + if (rgn23_data[offset] == LPFC_REGION23_LAST_REC) { + offset += 4; + tlv_offset += 4; + break; + } + if (rgn23_data[offset] != PORT_STE_TYPE) { + offset += rgn23_data[offset + 1] * 4 + 4; + tlv_offset += rgn23_data[offset + 1] * 4 + 4; + continue; + } + + /* This HBA contains PORT_STE configured */ + if (!rgn23_data[offset + 2]) + phba->hba_flag |= LINK_DISABLED; + + goto out; + } + } + +out: + kfree(rgn23_data); + return; +} + +/** + * lpfc_wr_object - write an object to the firmware + * @phba: HBA structure that indicates port to create a queue on. + * @dmabuf_list: list of dmabufs to write to the port. + * @size: the total byte value of the objects to write to the port. + * @offset: the current offset to be used to start the transfer. + * + * This routine will create a wr_object mailbox command to send to the port. + * the mailbox command will be constructed using the dma buffers described in + * @dmabuf_list to create a list of BDEs. This routine will fill in as many + * BDEs that the imbedded mailbox can support. The @offset variable will be + * used to indicate the starting offset of the transfer and will also return + * the offset after the write object mailbox has completed. @size is used to + * determine the end of the object and whether the eof bit should be set. + * + * Return 0 is successful and offset will contain the the new offset to use + * for the next write. + * Return negative value for error cases. + **/ +int +lpfc_wr_object(struct lpfc_hba *phba, struct list_head *dmabuf_list, + uint32_t size, uint32_t *offset) +{ + struct lpfc_mbx_wr_object *wr_object; + LPFC_MBOXQ_t *mbox; + int rc = 0, i = 0; + uint32_t shdr_status, shdr_add_status; + uint32_t mbox_tmo; + union lpfc_sli4_cfg_shdr *shdr; + struct lpfc_dmabuf *dmabuf; + uint32_t written = 0; + + mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); + if (!mbox) + return -ENOMEM; + + lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON, + LPFC_MBOX_OPCODE_WRITE_OBJECT, + sizeof(struct lpfc_mbx_wr_object) - + sizeof(struct lpfc_sli4_cfg_mhdr), LPFC_SLI4_MBX_EMBED); + + wr_object = (struct lpfc_mbx_wr_object *)&mbox->u.mqe.un.wr_object; + wr_object->u.request.write_offset = *offset; + sprintf((uint8_t *)wr_object->u.request.object_name, "/"); + wr_object->u.request.object_name[0] = + cpu_to_le32(wr_object->u.request.object_name[0]); + bf_set(lpfc_wr_object_eof, &wr_object->u.request, 0); + list_for_each_entry(dmabuf, dmabuf_list, list) { + if (i >= LPFC_MBX_WR_CONFIG_MAX_BDE || written >= size) + break; + wr_object->u.request.bde[i].addrLow = putPaddrLow(dmabuf->phys); + wr_object->u.request.bde[i].addrHigh = + putPaddrHigh(dmabuf->phys); + if (written + SLI4_PAGE_SIZE >= size) { + wr_object->u.request.bde[i].tus.f.bdeSize = + (size - written); + written += (size - written); + bf_set(lpfc_wr_object_eof, &wr_object->u.request, 1); + } else { + wr_object->u.request.bde[i].tus.f.bdeSize = + SLI4_PAGE_SIZE; + written += SLI4_PAGE_SIZE; + } + i++; + } + wr_object->u.request.bde_count = i; + bf_set(lpfc_wr_object_write_length, &wr_object->u.request, written); + if (!phba->sli4_hba.intr_enable) + rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); + else { + mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); + rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); + } + /* The IOCTL status is embedded in the mailbox subheader. */ + shdr = (union lpfc_sli4_cfg_shdr *) &wr_object->header.cfg_shdr; + shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); + shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); + if (rc != MBX_TIMEOUT) + mempool_free(mbox, phba->mbox_mem_pool); + if (shdr_status || shdr_add_status || rc) { + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "3025 Write Object mailbox failed with " + "status x%x add_status x%x, mbx status x%x\n", + shdr_status, shdr_add_status, rc); + rc = -ENXIO; + } else + *offset += wr_object->u.response.actual_write_length; + return rc; +} + +/** + * lpfc_cleanup_pending_mbox - Free up vport discovery mailbox commands. + * @vport: pointer to vport data structure. + * + * This function iterate through the mailboxq and clean up all REG_LOGIN + * and REG_VPI mailbox commands associated with the vport. This function + * is called when driver want to restart discovery of the vport due to + * a Clear Virtual Link event. + **/ +void +lpfc_cleanup_pending_mbox(struct lpfc_vport *vport) +{ + struct lpfc_hba *phba = vport->phba; + LPFC_MBOXQ_t *mb, *nextmb; + struct lpfc_dmabuf *mp; + struct lpfc_nodelist *ndlp; + struct lpfc_nodelist *act_mbx_ndlp = NULL; + struct Scsi_Host *shost = lpfc_shost_from_vport(vport); + LIST_HEAD(mbox_cmd_list); + uint8_t restart_loop; + + /* Clean up internally queued mailbox commands with the vport */ + spin_lock_irq(&phba->hbalock); + list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { + if (mb->vport != vport) + continue; + + if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) && + (mb->u.mb.mbxCommand != MBX_REG_VPI)) + continue; + + list_del(&mb->list); + list_add_tail(&mb->list, &mbox_cmd_list); + } + /* Clean up active mailbox command with the vport */ + mb = phba->sli.mbox_active; + if (mb && (mb->vport == vport)) { + if ((mb->u.mb.mbxCommand == MBX_REG_LOGIN64) || + (mb->u.mb.mbxCommand == MBX_REG_VPI)) + mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) { + act_mbx_ndlp = (struct lpfc_nodelist *)mb->context2; + /* Put reference count for delayed processing */ + act_mbx_ndlp = lpfc_nlp_get(act_mbx_ndlp); + /* Unregister the RPI when mailbox complete */ + mb->mbox_flag |= LPFC_MBX_IMED_UNREG; + } + } + /* Cleanup any mailbox completions which are not yet processed */ + do { + restart_loop = 0; + list_for_each_entry(mb, &phba->sli.mboxq_cmpl, list) { + /* + * If this mailox is already processed or it is + * for another vport ignore it. + */ + if ((mb->vport != vport) || + (mb->mbox_flag & LPFC_MBX_IMED_UNREG)) + continue; + + if ((mb->u.mb.mbxCommand != MBX_REG_LOGIN64) && + (mb->u.mb.mbxCommand != MBX_REG_VPI)) + continue; + + mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; + if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) { + ndlp = (struct lpfc_nodelist *)mb->context2; + /* Unregister the RPI when mailbox complete */ + mb->mbox_flag |= LPFC_MBX_IMED_UNREG; + restart_loop = 1; + spin_unlock_irq(&phba->hbalock); + spin_lock(shost->host_lock); + ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; + spin_unlock(shost->host_lock); + spin_lock_irq(&phba->hbalock); + break; + } + } + } while (restart_loop); + + spin_unlock_irq(&phba->hbalock); + + /* Release the cleaned-up mailbox commands */ + while (!list_empty(&mbox_cmd_list)) { + list_remove_head(&mbox_cmd_list, mb, LPFC_MBOXQ_t, list); + if (mb->u.mb.mbxCommand == MBX_REG_LOGIN64) { + mp = (struct lpfc_dmabuf *) (mb->context1); + if (mp) { + __lpfc_mbuf_free(phba, mp->virt, mp->phys); + kfree(mp); + } + ndlp = (struct lpfc_nodelist *) mb->context2; + mb->context2 = NULL; + if (ndlp) { + spin_lock(shost->host_lock); + ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; + spin_unlock(shost->host_lock); + lpfc_nlp_put(ndlp); + } + } + mempool_free(mb, phba->mbox_mem_pool); + } + + /* Release the ndlp with the cleaned-up active mailbox command */ + if (act_mbx_ndlp) { + spin_lock(shost->host_lock); + act_mbx_ndlp->nlp_flag &= ~NLP_IGNR_REG_CMPL; + spin_unlock(shost->host_lock); + lpfc_nlp_put(act_mbx_ndlp); + } +} + +/** + * lpfc_drain_txq - Drain the txq + * @phba: Pointer to HBA context object. + * + * This function attempt to submit IOCBs on the txq + * to the adapter. For SLI4 adapters, the txq contains + * ELS IOCBs that have been deferred because the there + * are no SGLs. This congestion can occur with large + * vport counts during node discovery. + **/ + +uint32_t +lpfc_drain_txq(struct lpfc_hba *phba) +{ + LIST_HEAD(completions); + struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; + struct lpfc_iocbq *piocbq = NULL; + unsigned long iflags = 0; + char *fail_msg = NULL; + struct lpfc_sglq *sglq; + union lpfc_wqe wqe; + uint32_t txq_cnt = 0; + + spin_lock_irqsave(&pring->ring_lock, iflags); + list_for_each_entry(piocbq, &pring->txq, list) { + txq_cnt++; + } + + if (txq_cnt > pring->txq_max) + pring->txq_max = txq_cnt; + + spin_unlock_irqrestore(&pring->ring_lock, iflags); + + while (!list_empty(&pring->txq)) { + spin_lock_irqsave(&pring->ring_lock, iflags); + + piocbq = lpfc_sli_ringtx_get(phba, pring); + if (!piocbq) { + spin_unlock_irqrestore(&pring->ring_lock, iflags); + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2823 txq empty and txq_cnt is %d\n ", + txq_cnt); + break; + } + sglq = __lpfc_sli_get_sglq(phba, piocbq); + if (!sglq) { + __lpfc_sli_ringtx_put(phba, pring, piocbq); + spin_unlock_irqrestore(&pring->ring_lock, iflags); + break; + } + txq_cnt--; + + /* The xri and iocb resources secured, + * attempt to issue request + */ + piocbq->sli4_lxritag = sglq->sli4_lxritag; + piocbq->sli4_xritag = sglq->sli4_xritag; + if (NO_XRI == lpfc_sli4_bpl2sgl(phba, piocbq, sglq)) + fail_msg = "to convert bpl to sgl"; + else if (lpfc_sli4_iocb2wqe(phba, piocbq, &wqe)) + fail_msg = "to convert iocb to wqe"; + else if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe)) + fail_msg = " - Wq is full"; + else + lpfc_sli_ringtxcmpl_put(phba, pring, piocbq); + + if (fail_msg) { + /* Failed means we can't issue and need to cancel */ + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2822 IOCB failed %s iotag 0x%x " + "xri 0x%x\n", + fail_msg, + piocbq->iotag, piocbq->sli4_xritag); + list_add_tail(&piocbq->list, &completions); + } + spin_unlock_irqrestore(&pring->ring_lock, iflags); + } + + /* Cancel all the IOCBs that cannot be issued */ + lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT, + IOERR_SLI_ABORTED); + + return txq_cnt; +} |