diff options
Diffstat (limited to 'kernel/drivers/scsi/hpsa.c')
| -rw-r--r-- | kernel/drivers/scsi/hpsa.c | 4115 |
1 files changed, 3080 insertions, 1035 deletions
diff --git a/kernel/drivers/scsi/hpsa.c b/kernel/drivers/scsi/hpsa.c index 8eab107b5..a3860367b 100644 --- a/kernel/drivers/scsi/hpsa.c +++ b/kernel/drivers/scsi/hpsa.c @@ -1,6 +1,7 @@ /* * Disk Array driver for HP Smart Array SAS controllers - * Copyright 2000, 2014 Hewlett-Packard Development Company, L.P. + * Copyright 2014-2015 PMC-Sierra, Inc. + * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -11,11 +12,7 @@ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Questions/Comments/Bugfixes to iss_storagedev@hp.com + * Questions/Comments/Bugfixes to storagedev@pmcs.com * */ @@ -43,6 +40,9 @@ #include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_tcq.h> +#include <scsi/scsi_eh.h> +#include <scsi/scsi_transport_sas.h> +#include <scsi/scsi_dbg.h> #include <linux/cciss_ioctl.h> #include <linux/string.h> #include <linux/bitmap.h> @@ -55,8 +55,11 @@ #include "hpsa_cmd.h" #include "hpsa.h" -/* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */ -#define HPSA_DRIVER_VERSION "3.4.4-1" +/* + * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' + * with an optional trailing '-' followed by a byte value (0-255). + */ +#define HPSA_DRIVER_VERSION "3.4.14-0" #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" #define HPSA "hpsa" @@ -129,6 +132,12 @@ static const struct pci_device_id hpsa_pci_device_id[] = { {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD}, {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE}, + {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580}, + {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581}, + {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582}, + {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583}, + {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584}, + {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585}, {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076}, {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087}, {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D}, @@ -186,6 +195,12 @@ static struct board_type products[] = { {0x21CC103C, "Smart Array", &SA5_access}, {0x21CD103C, "Smart Array", &SA5_access}, {0x21CE103C, "Smart HBA", &SA5_access}, + {0x05809005, "SmartHBA-SA", &SA5_access}, + {0x05819005, "SmartHBA-SA 8i", &SA5_access}, + {0x05829005, "SmartHBA-SA 8i8e", &SA5_access}, + {0x05839005, "SmartHBA-SA 8e", &SA5_access}, + {0x05849005, "SmartHBA-SA 16i", &SA5_access}, + {0x05859005, "SmartHBA-SA 4i4e", &SA5_access}, {0x00761590, "HP Storage P1224 Array Controller", &SA5_access}, {0x00871590, "HP Storage P1224e Array Controller", &SA5_access}, {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access}, @@ -194,6 +209,20 @@ static struct board_type products[] = { {0xFFFF103C, "Unknown Smart Array", &SA5_access}, }; +static struct scsi_transport_template *hpsa_sas_transport_template; +static int hpsa_add_sas_host(struct ctlr_info *h); +static void hpsa_delete_sas_host(struct ctlr_info *h); +static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node, + struct hpsa_scsi_dev_t *device); +static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device); +static struct hpsa_scsi_dev_t + *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, + struct sas_rphy *rphy); + +#define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy) +static const struct scsi_cmnd hpsa_cmd_busy; +#define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle) +static const struct scsi_cmnd hpsa_cmd_idle; static int number_of_controllers; static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id); @@ -207,11 +236,15 @@ static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, static void cmd_free(struct ctlr_info *h, struct CommandList *c); static struct CommandList *cmd_alloc(struct ctlr_info *h); +static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c); +static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, + struct scsi_cmnd *scmd); static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, void *buff, size_t size, u16 page_code, unsigned char *scsi3addr, int cmd_type); static void hpsa_free_cmd_pool(struct ctlr_info *h); #define VPD_PAGE (1 << 8) +#define HPSA_SIMPLE_ERROR_BITS 0x03 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd); static void hpsa_scan_start(struct Scsi_Host *); @@ -222,9 +255,10 @@ static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth); static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd); static int hpsa_slave_alloc(struct scsi_device *sdev); +static int hpsa_slave_configure(struct scsi_device *sdev); static void hpsa_slave_destroy(struct scsi_device *sdev); -static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno); +static void hpsa_update_scsi_devices(struct ctlr_info *h); static int check_for_unit_attention(struct ctlr_info *h, struct CommandList *c); static void check_ioctl_unit_attention(struct ctlr_info *h, @@ -232,7 +266,8 @@ static void check_ioctl_unit_attention(struct ctlr_info *h, /* performant mode helper functions */ static void calc_bucket_map(int *bucket, int num_buckets, int nsgs, int min_blocks, u32 *bucket_map); -static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); +static void hpsa_free_performant_mode(struct ctlr_info *h); +static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h); static inline u32 next_command(struct ctlr_info *h, u8 q); static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, u32 *cfg_base_addr, u64 *cfg_base_addr_index, @@ -252,6 +287,12 @@ static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h, struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len, u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk); static void hpsa_command_resubmit_worker(struct work_struct *work); +static u32 lockup_detected(struct ctlr_info *h); +static int detect_controller_lockup(struct ctlr_info *h); +static void hpsa_disable_rld_caching(struct ctlr_info *h); +static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h, + struct ReportExtendedLUNdata *buf, int bufsize); +static int hpsa_luns_changed(struct ctlr_info *h); static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev) { @@ -265,40 +306,86 @@ static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh) return (struct ctlr_info *) *priv; } +static inline bool hpsa_is_cmd_idle(struct CommandList *c) +{ + return c->scsi_cmd == SCSI_CMD_IDLE; +} + +static inline bool hpsa_is_pending_event(struct CommandList *c) +{ + return c->abort_pending || c->reset_pending; +} + +/* extract sense key, asc, and ascq from sense data. -1 means invalid. */ +static void decode_sense_data(const u8 *sense_data, int sense_data_len, + u8 *sense_key, u8 *asc, u8 *ascq) +{ + struct scsi_sense_hdr sshdr; + bool rc; + + *sense_key = -1; + *asc = -1; + *ascq = -1; + + if (sense_data_len < 1) + return; + + rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr); + if (rc) { + *sense_key = sshdr.sense_key; + *asc = sshdr.asc; + *ascq = sshdr.ascq; + } +} + static int check_for_unit_attention(struct ctlr_info *h, struct CommandList *c) { - if (c->err_info->SenseInfo[2] != UNIT_ATTENTION) + u8 sense_key, asc, ascq; + int sense_len; + + if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo)) + sense_len = sizeof(c->err_info->SenseInfo); + else + sense_len = c->err_info->SenseLen; + + decode_sense_data(c->err_info->SenseInfo, sense_len, + &sense_key, &asc, &ascq); + if (sense_key != UNIT_ATTENTION || asc == 0xff) return 0; - switch (c->err_info->SenseInfo[12]) { + switch (asc) { case STATE_CHANGED: - dev_warn(&h->pdev->dev, HPSA "%d: a state change " - "detected, command retried\n", h->ctlr); + dev_warn(&h->pdev->dev, + "%s: a state change detected, command retried\n", + h->devname); break; case LUN_FAILED: dev_warn(&h->pdev->dev, - HPSA "%d: LUN failure detected\n", h->ctlr); + "%s: LUN failure detected\n", h->devname); break; case REPORT_LUNS_CHANGED: dev_warn(&h->pdev->dev, - HPSA "%d: report LUN data changed\n", h->ctlr); + "%s: report LUN data changed\n", h->devname); /* * Note: this REPORT_LUNS_CHANGED condition only occurs on the external * target (array) devices. */ break; case POWER_OR_RESET: - dev_warn(&h->pdev->dev, HPSA "%d: a power on " - "or device reset detected\n", h->ctlr); + dev_warn(&h->pdev->dev, + "%s: a power on or device reset detected\n", + h->devname); break; case UNIT_ATTENTION_CLEARED: - dev_warn(&h->pdev->dev, HPSA "%d: unit attention " - "cleared by another initiator\n", h->ctlr); + dev_warn(&h->pdev->dev, + "%s: unit attention cleared by another initiator\n", + h->devname); break; default: - dev_warn(&h->pdev->dev, HPSA "%d: unknown " - "unit attention detected\n", h->ctlr); + dev_warn(&h->pdev->dev, + "%s: unknown unit attention detected\n", + h->devname); break; } return 1; @@ -314,6 +401,20 @@ static int check_for_busy(struct ctlr_info *h, struct CommandList *c) return 1; } +static u32 lockup_detected(struct ctlr_info *h); +static ssize_t host_show_lockup_detected(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ld; + struct ctlr_info *h; + struct Scsi_Host *shost = class_to_shost(dev); + + h = shost_to_hba(shost); + ld = lockup_detected(h); + + return sprintf(buf, "ld=%d\n", ld); +} + static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) @@ -425,7 +526,7 @@ static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev, /* List of controllers which cannot be hard reset on kexec with reset_devices */ static u32 unresettable_controller[] = { 0x324a103C, /* Smart Array P712m */ - 0x324b103C, /* SmartArray P711m */ + 0x324b103C, /* Smart Array P711m */ 0x3223103C, /* Smart Array P800 */ 0x3234103C, /* Smart Array P400 */ 0x3235103C, /* Smart Array P400i */ @@ -467,24 +568,32 @@ static u32 soft_unresettable_controller[] = { 0x409D0E11, /* Smart Array 6400 EM */ }; -static int ctlr_is_hard_resettable(u32 board_id) +static u32 needs_abort_tags_swizzled[] = { + 0x323D103C, /* Smart Array P700m */ + 0x324a103C, /* Smart Array P712m */ + 0x324b103C, /* SmartArray P711m */ +}; + +static int board_id_in_array(u32 a[], int nelems, u32 board_id) { int i; - for (i = 0; i < ARRAY_SIZE(unresettable_controller); i++) - if (unresettable_controller[i] == board_id) - return 0; - return 1; + for (i = 0; i < nelems; i++) + if (a[i] == board_id) + return 1; + return 0; } -static int ctlr_is_soft_resettable(u32 board_id) +static int ctlr_is_hard_resettable(u32 board_id) { - int i; + return !board_id_in_array(unresettable_controller, + ARRAY_SIZE(unresettable_controller), board_id); +} - for (i = 0; i < ARRAY_SIZE(soft_unresettable_controller); i++) - if (soft_unresettable_controller[i] == board_id) - return 0; - return 1; +static int ctlr_is_soft_resettable(u32 board_id) +{ + return !board_id_in_array(soft_unresettable_controller, + ARRAY_SIZE(soft_unresettable_controller), board_id); } static int ctlr_is_resettable(u32 board_id) @@ -493,6 +602,12 @@ static int ctlr_is_resettable(u32 board_id) ctlr_is_soft_resettable(board_id); } +static int ctlr_needs_abort_tags_swizzled(u32 board_id) +{ + return board_id_in_array(needs_abort_tags_swizzled, + ARRAY_SIZE(needs_abort_tags_swizzled), board_id); +} + static ssize_t host_show_resettable(struct device *dev, struct device_attribute *attr, char *buf) { @@ -509,7 +624,7 @@ static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[]) } static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6", - "1(+0)ADM", "UNKNOWN" + "1(+0)ADM", "UNKNOWN", "PHYS DRV" }; #define HPSA_RAID_0 0 #define HPSA_RAID_4 1 @@ -518,7 +633,13 @@ static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6", #define HPSA_RAID_51 4 #define HPSA_RAID_6 5 /* also used for RAID 60 */ #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ -#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1) +#define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 2) +#define PHYSICAL_DRIVE (ARRAY_SIZE(raid_label) - 1) + +static inline bool is_logical_device(struct hpsa_scsi_dev_t *device) +{ + return !device->physical_device; +} static ssize_t raid_level_show(struct device *dev, struct device_attribute *attr, char *buf) @@ -540,7 +661,7 @@ static ssize_t raid_level_show(struct device *dev, } /* Is this even a logical drive? */ - if (!is_logical_dev_addr_mode(hdev->scsi3addr)) { + if (!is_logical_device(hdev)) { spin_unlock_irqrestore(&h->lock, flags); l = snprintf(buf, PAGE_SIZE, "N/A\n"); return l; @@ -628,12 +749,102 @@ static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev, return snprintf(buf, 20, "%d\n", offload_enabled); } +#define MAX_PATHS 8 + +static ssize_t path_info_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct ctlr_info *h; + struct scsi_device *sdev; + struct hpsa_scsi_dev_t *hdev; + unsigned long flags; + int i; + int output_len = 0; + u8 box; + u8 bay; + u8 path_map_index = 0; + char *active; + unsigned char phys_connector[2]; + + sdev = to_scsi_device(dev); + h = sdev_to_hba(sdev); + spin_lock_irqsave(&h->devlock, flags); + hdev = sdev->hostdata; + if (!hdev) { + spin_unlock_irqrestore(&h->devlock, flags); + return -ENODEV; + } + + bay = hdev->bay; + for (i = 0; i < MAX_PATHS; i++) { + path_map_index = 1<<i; + if (i == hdev->active_path_index) + active = "Active"; + else if (hdev->path_map & path_map_index) + active = "Inactive"; + else + continue; + + output_len += scnprintf(buf + output_len, + PAGE_SIZE - output_len, + "[%d:%d:%d:%d] %20.20s ", + h->scsi_host->host_no, + hdev->bus, hdev->target, hdev->lun, + scsi_device_type(hdev->devtype)); + + if (hdev->external || + hdev->devtype == TYPE_RAID || + is_logical_device(hdev)) { + output_len += snprintf(buf + output_len, + PAGE_SIZE - output_len, + "%s\n", active); + continue; + } + + box = hdev->box[i]; + memcpy(&phys_connector, &hdev->phys_connector[i], + sizeof(phys_connector)); + if (phys_connector[0] < '0') + phys_connector[0] = '0'; + if (phys_connector[1] < '0') + phys_connector[1] = '0'; + if (hdev->phys_connector[i] > 0) + output_len += snprintf(buf + output_len, + PAGE_SIZE - output_len, + "PORT: %.2s ", + phys_connector); + if (hdev->devtype == TYPE_DISK && hdev->expose_device) { + if (box == 0 || box == 0xFF) { + output_len += snprintf(buf + output_len, + PAGE_SIZE - output_len, + "BAY: %hhu %s\n", + bay, active); + } else { + output_len += snprintf(buf + output_len, + PAGE_SIZE - output_len, + "BOX: %hhu BAY: %hhu %s\n", + box, bay, active); + } + } else if (box != 0 && box != 0xFF) { + output_len += snprintf(buf + output_len, + PAGE_SIZE - output_len, "BOX: %hhu %s\n", + box, active); + } else + output_len += snprintf(buf + output_len, + PAGE_SIZE - output_len, "%s\n", active); + } + + spin_unlock_irqrestore(&h->devlock, flags); + return output_len; +} + static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL); static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL); static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL); static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan); static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO, host_show_hp_ssd_smart_path_enabled, NULL); +static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL); static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH, host_show_hp_ssd_smart_path_status, host_store_hp_ssd_smart_path_status); @@ -647,12 +858,15 @@ static DEVICE_ATTR(transport_mode, S_IRUGO, host_show_transport_mode, NULL); static DEVICE_ATTR(resettable, S_IRUGO, host_show_resettable, NULL); +static DEVICE_ATTR(lockup_detected, S_IRUGO, + host_show_lockup_detected, NULL); static struct device_attribute *hpsa_sdev_attrs[] = { &dev_attr_raid_level, &dev_attr_lunid, &dev_attr_unique_id, &dev_attr_hp_ssd_smart_path_enabled, + &dev_attr_path_info, NULL, }; @@ -664,9 +878,13 @@ static struct device_attribute *hpsa_shost_attrs[] = { &dev_attr_resettable, &dev_attr_hp_ssd_smart_path_status, &dev_attr_raid_offload_debug, + &dev_attr_lockup_detected, NULL, }; +#define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_ABORTS + \ + HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS) + static struct scsi_host_template hpsa_driver_template = { .module = THIS_MODULE, .name = HPSA, @@ -681,6 +899,7 @@ static struct scsi_host_template hpsa_driver_template = { .eh_device_reset_handler = hpsa_eh_device_reset_handler, .ioctl = hpsa_ioctl, .slave_alloc = hpsa_slave_alloc, + .slave_configure = hpsa_slave_configure, .slave_destroy = hpsa_slave_destroy, #ifdef CONFIG_COMPAT .compat_ioctl = hpsa_compat_ioctl, @@ -743,30 +962,43 @@ static inline u32 next_command(struct ctlr_info *h, u8 q) * a separate special register for submitting commands. */ -/* set_performant_mode: Modify the tag for cciss performant +/* + * set_performant_mode: Modify the tag for cciss performant * set bit 0 for pull model, bits 3-1 for block fetch * register number */ -static void set_performant_mode(struct ctlr_info *h, struct CommandList *c) +#define DEFAULT_REPLY_QUEUE (-1) +static void set_performant_mode(struct ctlr_info *h, struct CommandList *c, + int reply_queue) { if (likely(h->transMethod & CFGTBL_Trans_Performant)) { c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1); - if (likely(h->msix_vector > 0)) + if (unlikely(!h->msix_vector)) + return; + if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) c->Header.ReplyQueue = raw_smp_processor_id() % h->nreply_queues; + else + c->Header.ReplyQueue = reply_queue % h->nreply_queues; } } static void set_ioaccel1_performant_mode(struct ctlr_info *h, - struct CommandList *c) + struct CommandList *c, + int reply_queue) { struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex]; - /* Tell the controller to post the reply to the queue for this + /* + * Tell the controller to post the reply to the queue for this * processor. This seems to give the best I/O throughput. */ - cp->ReplyQueue = smp_processor_id() % h->nreply_queues; - /* Set the bits in the address sent down to include: + if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) + cp->ReplyQueue = smp_processor_id() % h->nreply_queues; + else + cp->ReplyQueue = reply_queue % h->nreply_queues; + /* + * Set the bits in the address sent down to include: * - performant mode bit (bit 0) * - pull count (bits 1-3) * - command type (bits 4-6) @@ -775,20 +1007,48 @@ static void set_ioaccel1_performant_mode(struct ctlr_info *h, IOACCEL1_BUSADDR_CMDTYPE; } -static void set_ioaccel2_performant_mode(struct ctlr_info *h, - struct CommandList *c) +static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h, + struct CommandList *c, + int reply_queue) { - struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex]; + struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *) + &h->ioaccel2_cmd_pool[c->cmdindex]; /* Tell the controller to post the reply to the queue for this * processor. This seems to give the best I/O throughput. */ - cp->reply_queue = smp_processor_id() % h->nreply_queues; + if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) + cp->reply_queue = smp_processor_id() % h->nreply_queues; + else + cp->reply_queue = reply_queue % h->nreply_queues; /* Set the bits in the address sent down to include: * - performant mode bit not used in ioaccel mode 2 * - pull count (bits 0-3) * - command type isn't needed for ioaccel2 */ + c->busaddr |= h->ioaccel2_blockFetchTable[0]; +} + +static void set_ioaccel2_performant_mode(struct ctlr_info *h, + struct CommandList *c, + int reply_queue) +{ + struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex]; + + /* + * Tell the controller to post the reply to the queue for this + * processor. This seems to give the best I/O throughput. + */ + if (likely(reply_queue == DEFAULT_REPLY_QUEUE)) + cp->reply_queue = smp_processor_id() % h->nreply_queues; + else + cp->reply_queue = reply_queue % h->nreply_queues; + /* + * Set the bits in the address sent down to include: + * - performant mode bit not used in ioaccel mode 2 + * - pull count (bits 0-3) + * - command type isn't needed for ioaccel2 + */ c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]); } @@ -821,26 +1081,38 @@ static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h, h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; } -static void enqueue_cmd_and_start_io(struct ctlr_info *h, - struct CommandList *c) +static void __enqueue_cmd_and_start_io(struct ctlr_info *h, + struct CommandList *c, int reply_queue) { dial_down_lockup_detection_during_fw_flash(h, c); atomic_inc(&h->commands_outstanding); switch (c->cmd_type) { case CMD_IOACCEL1: - set_ioaccel1_performant_mode(h, c); + set_ioaccel1_performant_mode(h, c, reply_queue); writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); break; case CMD_IOACCEL2: - set_ioaccel2_performant_mode(h, c); + set_ioaccel2_performant_mode(h, c, reply_queue); + writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); + break; + case IOACCEL2_TMF: + set_ioaccel2_tmf_performant_mode(h, c, reply_queue); writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32); break; default: - set_performant_mode(h, c); + set_performant_mode(h, c, reply_queue); h->access.submit_command(h, c); } } +static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c) +{ + if (unlikely(hpsa_is_pending_event(c))) + return finish_cmd(c); + + __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE); +} + static inline int is_hba_lunid(unsigned char scsi3addr[]) { return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0; @@ -881,8 +1153,62 @@ static int hpsa_find_target_lun(struct ctlr_info *h, return !found; } +static void hpsa_show_dev_msg(const char *level, struct ctlr_info *h, + struct hpsa_scsi_dev_t *dev, char *description) +{ +#define LABEL_SIZE 25 + char label[LABEL_SIZE]; + + if (h == NULL || h->pdev == NULL || h->scsi_host == NULL) + return; + + switch (dev->devtype) { + case TYPE_RAID: + snprintf(label, LABEL_SIZE, "controller"); + break; + case TYPE_ENCLOSURE: + snprintf(label, LABEL_SIZE, "enclosure"); + break; + case TYPE_DISK: + if (dev->external) + snprintf(label, LABEL_SIZE, "external"); + else if (!is_logical_dev_addr_mode(dev->scsi3addr)) + snprintf(label, LABEL_SIZE, "%s", + raid_label[PHYSICAL_DRIVE]); + else + snprintf(label, LABEL_SIZE, "RAID-%s", + dev->raid_level > RAID_UNKNOWN ? "?" : + raid_label[dev->raid_level]); + break; + case TYPE_ROM: + snprintf(label, LABEL_SIZE, "rom"); + break; + case TYPE_TAPE: + snprintf(label, LABEL_SIZE, "tape"); + break; + case TYPE_MEDIUM_CHANGER: + snprintf(label, LABEL_SIZE, "changer"); + break; + default: + snprintf(label, LABEL_SIZE, "UNKNOWN"); + break; + } + + dev_printk(level, &h->pdev->dev, + "scsi %d:%d:%d:%d: %s %s %.8s %.16s %s SSDSmartPathCap%c En%c Exp=%d\n", + h->scsi_host->host_no, dev->bus, dev->target, dev->lun, + description, + scsi_device_type(dev->devtype), + dev->vendor, + dev->model, + label, + dev->offload_config ? '+' : '-', + dev->offload_enabled ? '+' : '-', + dev->expose_device); +} + /* Add an entry into h->dev[] array. */ -static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, +static int hpsa_scsi_add_entry(struct ctlr_info *h, struct hpsa_scsi_dev_t *device, struct hpsa_scsi_dev_t *added[], int *nadded) { @@ -917,17 +1243,19 @@ static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno, /* This is a non-zero lun of a multi-lun device. * Search through our list and find the device which - * has the same 8 byte LUN address, excepting byte 4. + * has the same 8 byte LUN address, excepting byte 4 and 5. * Assign the same bus and target for this new LUN. * Use the logical unit number from the firmware. */ memcpy(addr1, device->scsi3addr, 8); addr1[4] = 0; + addr1[5] = 0; for (i = 0; i < n; i++) { sd = h->dev[i]; memcpy(addr2, sd->scsi3addr, 8); addr2[4] = 0; - /* differ only in byte 4? */ + addr2[5] = 0; + /* differ only in byte 4 and 5? */ if (memcmp(addr1, addr2, 8) == 0) { device->bus = sd->bus; device->target = sd->target; @@ -948,22 +1276,18 @@ lun_assigned: h->ndevices++; added[*nadded] = device; (*nadded)++; - - /* initially, (before registering with scsi layer) we don't - * know our hostno and we don't want to print anything first - * time anyway (the scsi layer's inquiries will show that info) - */ - /* if (hostno != -1) */ - dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d added.\n", - scsi_device_type(device->devtype), hostno, - device->bus, device->target, device->lun); + hpsa_show_dev_msg(KERN_INFO, h, device, + device->expose_device ? "added" : "masked"); + device->offload_to_be_enabled = device->offload_enabled; + device->offload_enabled = 0; return 0; } /* Update an entry in h->dev[] array. */ -static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno, +static void hpsa_scsi_update_entry(struct ctlr_info *h, int entry, struct hpsa_scsi_dev_t *new_entry) { + int offload_enabled; /* assumes h->devlock is held */ BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES); @@ -982,20 +1306,33 @@ static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno, */ h->dev[entry]->raid_map = new_entry->raid_map; h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; - wmb(); /* ensure raid map updated prior to ->offload_enabled */ } + if (new_entry->hba_ioaccel_enabled) { + h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle; + wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */ + } + h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled; h->dev[entry]->offload_config = new_entry->offload_config; h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror; - h->dev[entry]->offload_enabled = new_entry->offload_enabled; h->dev[entry]->queue_depth = new_entry->queue_depth; - dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d updated.\n", - scsi_device_type(new_entry->devtype), hostno, new_entry->bus, - new_entry->target, new_entry->lun); + /* + * We can turn off ioaccel offload now, but need to delay turning + * it on until we can update h->dev[entry]->phys_disk[], but we + * can't do that until all the devices are updated. + */ + h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled; + if (!new_entry->offload_enabled) + h->dev[entry]->offload_enabled = 0; + + offload_enabled = h->dev[entry]->offload_enabled; + h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled; + hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated"); + h->dev[entry]->offload_enabled = offload_enabled; } /* Replace an entry from h->dev[] array. */ -static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno, +static void hpsa_scsi_replace_entry(struct ctlr_info *h, int entry, struct hpsa_scsi_dev_t *new_entry, struct hpsa_scsi_dev_t *added[], int *nadded, struct hpsa_scsi_dev_t *removed[], int *nremoved) @@ -1017,13 +1354,13 @@ static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno, h->dev[entry] = new_entry; added[*nadded] = new_entry; (*nadded)++; - dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d changed.\n", - scsi_device_type(new_entry->devtype), hostno, new_entry->bus, - new_entry->target, new_entry->lun); + hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced"); + new_entry->offload_to_be_enabled = new_entry->offload_enabled; + new_entry->offload_enabled = 0; } /* Remove an entry from h->dev[] array. */ -static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, +static void hpsa_scsi_remove_entry(struct ctlr_info *h, int entry, struct hpsa_scsi_dev_t *removed[], int *nremoved) { /* assumes h->devlock is held */ @@ -1039,9 +1376,7 @@ static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry, for (i = entry; i < h->ndevices-1; i++) h->dev[i] = h->dev[i+1]; h->ndevices--; - dev_info(&h->pdev->dev, "%s device c%db%dt%dl%d removed.\n", - scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, - sd->lun); + hpsa_show_dev_msg(KERN_INFO, h, sd, "removed"); } #define SCSI3ADDR_EQ(a, b) ( \ @@ -1113,8 +1448,9 @@ static inline int device_updated(struct hpsa_scsi_dev_t *dev1, return 1; if (dev1->offload_enabled != dev2->offload_enabled) return 1; - if (dev1->queue_depth != dev2->queue_depth) - return 1; + if (!is_logical_dev_addr_mode(dev1->scsi3addr)) + if (dev1->queue_depth != dev2->queue_depth) + return 1; return 0; } @@ -1135,6 +1471,9 @@ static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle, #define DEVICE_CHANGED 1 #define DEVICE_SAME 2 #define DEVICE_UPDATED 3 + if (needle == NULL) + return DEVICE_NOT_FOUND; + for (i = 0; i < haystack_size; i++) { if (haystack[i] == NULL) /* previously removed. */ continue; @@ -1203,17 +1542,23 @@ static void hpsa_show_volume_status(struct ctlr_info *h, h->scsi_host->host_no, sd->bus, sd->target, sd->lun); break; + case HPSA_LV_NOT_AVAILABLE: + dev_info(&h->pdev->dev, + "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n", + h->scsi_host->host_no, + sd->bus, sd->target, sd->lun); + break; case HPSA_LV_UNDERGOING_RPI: dev_info(&h->pdev->dev, - "C%d:B%d:T%d:L%d Volume is undergoing rapid parity initialization process.\n", + "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n", h->scsi_host->host_no, sd->bus, sd->target, sd->lun); break; case HPSA_LV_PENDING_RPI: dev_info(&h->pdev->dev, - "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n", - h->scsi_host->host_no, - sd->bus, sd->target, sd->lun); + "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n", + h->scsi_host->host_no, + sd->bus, sd->target, sd->lun); break; case HPSA_LV_ENCRYPTED_NO_KEY: dev_info(&h->pdev->dev, @@ -1283,15 +1628,19 @@ static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h, if (nraid_map_entries > RAID_MAP_MAX_ENTRIES) nraid_map_entries = RAID_MAP_MAX_ENTRIES; + logical_drive->nphysical_disks = nraid_map_entries; + qdepth = 0; for (i = 0; i < nraid_map_entries; i++) { logical_drive->phys_disk[i] = NULL; if (!logical_drive->offload_config) continue; for (j = 0; j < ndevices; j++) { + if (dev[j] == NULL) + continue; if (dev[j]->devtype != TYPE_DISK) continue; - if (is_logical_dev_addr_mode(dev[j]->scsi3addr)) + if (is_logical_device(dev[j])) continue; if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle) continue; @@ -1312,7 +1661,8 @@ static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h, */ if (!logical_drive->phys_disk[i]) { logical_drive->offload_enabled = 0; - logical_drive->queue_depth = h->nr_cmds; + logical_drive->offload_to_be_enabled = 0; + logical_drive->queue_depth = 8; } } if (nraid_map_entries) @@ -1331,15 +1681,70 @@ static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h, int i; for (i = 0; i < ndevices; i++) { + if (dev[i] == NULL) + continue; if (dev[i]->devtype != TYPE_DISK) continue; - if (!is_logical_dev_addr_mode(dev[i]->scsi3addr)) + if (!is_logical_device(dev[i])) continue; + + /* + * If offload is currently enabled, the RAID map and + * phys_disk[] assignment *better* not be changing + * and since it isn't changing, we do not need to + * update it. + */ + if (dev[i]->offload_enabled) + continue; + hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]); } } -static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, +static int hpsa_add_device(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) +{ + int rc = 0; + + if (!h->scsi_host) + return 1; + + if (is_logical_device(device)) /* RAID */ + rc = scsi_add_device(h->scsi_host, device->bus, + device->target, device->lun); + else /* HBA */ + rc = hpsa_add_sas_device(h->sas_host, device); + + return rc; +} + +static void hpsa_remove_device(struct ctlr_info *h, + struct hpsa_scsi_dev_t *device) +{ + struct scsi_device *sdev = NULL; + + if (!h->scsi_host) + return; + + if (is_logical_device(device)) { /* RAID */ + sdev = scsi_device_lookup(h->scsi_host, device->bus, + device->target, device->lun); + if (sdev) { + scsi_remove_device(sdev); + scsi_device_put(sdev); + } else { + /* + * We don't expect to get here. Future commands + * to this device will get a selection timeout as + * if the device were gone. + */ + hpsa_show_dev_msg(KERN_WARNING, h, device, + "didn't find device for removal."); + } + } else /* HBA */ + hpsa_remove_sas_device(device); +} + +static void adjust_hpsa_scsi_table(struct ctlr_info *h, struct hpsa_scsi_dev_t *sd[], int nsds) { /* sd contains scsi3 addresses and devtypes, and inquiry @@ -1351,7 +1756,15 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, unsigned long flags; struct hpsa_scsi_dev_t **added, **removed; int nadded, nremoved; - struct Scsi_Host *sh = NULL; + + /* + * A reset can cause a device status to change + * re-schedule the scan to see what happened. + */ + if (h->reset_in_progress) { + h->drv_req_rescan = 1; + return; + } added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL); removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL); @@ -1379,19 +1792,18 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry); if (device_change == DEVICE_NOT_FOUND) { changes++; - hpsa_scsi_remove_entry(h, hostno, i, - removed, &nremoved); + hpsa_scsi_remove_entry(h, i, removed, &nremoved); continue; /* remove ^^^, hence i not incremented */ } else if (device_change == DEVICE_CHANGED) { changes++; - hpsa_scsi_replace_entry(h, hostno, i, sd[entry], + hpsa_scsi_replace_entry(h, i, sd[entry], added, &nadded, removed, &nremoved); /* Set it to NULL to prevent it from being freed * at the bottom of hpsa_update_scsi_devices() */ sd[entry] = NULL; } else if (device_change == DEVICE_UPDATED) { - hpsa_scsi_update_entry(h, hostno, i, sd[entry]); + hpsa_scsi_update_entry(h, i, sd[entry]); } i++; } @@ -1411,9 +1823,7 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, */ if (sd[i]->volume_offline) { hpsa_show_volume_status(h, sd[i]); - dev_info(&h->pdev->dev, "c%db%dt%dl%d: temporarily offline\n", - h->scsi_host->host_no, - sd[i]->bus, sd[i]->target, sd[i]->lun); + hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline"); continue; } @@ -1421,8 +1831,7 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, h->ndevices, &entry); if (device_change == DEVICE_NOT_FOUND) { changes++; - if (hpsa_scsi_add_entry(h, hostno, sd[i], - added, &nadded) != 0) + if (hpsa_scsi_add_entry(h, sd[i], added, &nadded) != 0) break; sd[i] = NULL; /* prevent from being freed later. */ } else if (device_change == DEVICE_CHANGED) { @@ -1433,6 +1842,17 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, /* but if it does happen, we just ignore that device */ } } + hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices); + + /* Now that h->dev[]->phys_disk[] is coherent, we can enable + * any logical drives that need it enabled. + */ + for (i = 0; i < h->ndevices; i++) { + if (h->dev[i] == NULL) + continue; + h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled; + } + spin_unlock_irqrestore(&h->devlock, flags); /* Monitor devices which are in one of several NOT READY states to be @@ -1450,43 +1870,37 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno, * (or if there are no changes) scsi_scan_host will do it later the * first time through. */ - if (hostno == -1 || !changes) + if (!changes) goto free_and_out; - sh = h->scsi_host; /* Notify scsi mid layer of any removed devices */ for (i = 0; i < nremoved; i++) { - struct scsi_device *sdev = - scsi_device_lookup(sh, removed[i]->bus, - removed[i]->target, removed[i]->lun); - if (sdev != NULL) { - scsi_remove_device(sdev); - scsi_device_put(sdev); - } else { - /* We don't expect to get here. - * future cmds to this device will get selection - * timeout as if the device was gone. - */ - dev_warn(&h->pdev->dev, "didn't find c%db%dt%dl%d " - " for removal.", hostno, removed[i]->bus, - removed[i]->target, removed[i]->lun); - } + if (removed[i] == NULL) + continue; + if (removed[i]->expose_device) + hpsa_remove_device(h, removed[i]); kfree(removed[i]); removed[i] = NULL; } /* Notify scsi mid layer of any added devices */ for (i = 0; i < nadded; i++) { - if (scsi_add_device(sh, added[i]->bus, - added[i]->target, added[i]->lun) == 0) + int rc = 0; + + if (added[i] == NULL) + continue; + if (!(added[i]->expose_device)) + continue; + rc = hpsa_add_device(h, added[i]); + if (!rc) continue; - dev_warn(&h->pdev->dev, "scsi_add_device c%db%dt%dl%d failed, " - "device not added.\n", hostno, added[i]->bus, - added[i]->target, added[i]->lun); + dev_warn(&h->pdev->dev, + "addition failed %d, device not added.", rc); /* now we have to remove it from h->dev, * since it didn't get added to scsi mid layer */ fixup_botched_add(h, added[i]); + h->drv_req_rescan = 1; } free_and_out: @@ -1512,7 +1926,6 @@ static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h, return NULL; } -/* link sdev->hostdata to our per-device structure. */ static int hpsa_slave_alloc(struct scsi_device *sdev) { struct hpsa_scsi_dev_t *sd; @@ -1521,23 +1934,95 @@ static int hpsa_slave_alloc(struct scsi_device *sdev) h = sdev_to_hba(sdev); spin_lock_irqsave(&h->devlock, flags); - sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), - sdev_id(sdev), sdev->lun); - if (sd != NULL) { - sdev->hostdata = sd; - if (sd->queue_depth) - scsi_change_queue_depth(sdev, sd->queue_depth); + if (sdev_channel(sdev) == HPSA_PHYSICAL_DEVICE_BUS) { + struct scsi_target *starget; + struct sas_rphy *rphy; + + starget = scsi_target(sdev); + rphy = target_to_rphy(starget); + sd = hpsa_find_device_by_sas_rphy(h, rphy); + if (sd) { + sd->target = sdev_id(sdev); + sd->lun = sdev->lun; + } + } else + sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev), + sdev_id(sdev), sdev->lun); + + if (sd && sd->expose_device) { atomic_set(&sd->ioaccel_cmds_out, 0); - } + sdev->hostdata = sd; + } else + sdev->hostdata = NULL; spin_unlock_irqrestore(&h->devlock, flags); return 0; } +/* configure scsi device based on internal per-device structure */ +static int hpsa_slave_configure(struct scsi_device *sdev) +{ + struct hpsa_scsi_dev_t *sd; + int queue_depth; + + sd = sdev->hostdata; + sdev->no_uld_attach = !sd || !sd->expose_device; + + if (sd) + queue_depth = sd->queue_depth != 0 ? + sd->queue_depth : sdev->host->can_queue; + else + queue_depth = sdev->host->can_queue; + + scsi_change_queue_depth(sdev, queue_depth); + + return 0; +} + static void hpsa_slave_destroy(struct scsi_device *sdev) { /* nothing to do. */ } +static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h) +{ + int i; + + if (!h->ioaccel2_cmd_sg_list) + return; + for (i = 0; i < h->nr_cmds; i++) { + kfree(h->ioaccel2_cmd_sg_list[i]); + h->ioaccel2_cmd_sg_list[i] = NULL; + } + kfree(h->ioaccel2_cmd_sg_list); + h->ioaccel2_cmd_sg_list = NULL; +} + +static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h) +{ + int i; + + if (h->chainsize <= 0) + return 0; + + h->ioaccel2_cmd_sg_list = + kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds, + GFP_KERNEL); + if (!h->ioaccel2_cmd_sg_list) + return -ENOMEM; + for (i = 0; i < h->nr_cmds; i++) { + h->ioaccel2_cmd_sg_list[i] = + kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) * + h->maxsgentries, GFP_KERNEL); + if (!h->ioaccel2_cmd_sg_list[i]) + goto clean; + } + return 0; + +clean: + hpsa_free_ioaccel2_sg_chain_blocks(h); + return -ENOMEM; +} + static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) { int i; @@ -1552,7 +2037,7 @@ static void hpsa_free_sg_chain_blocks(struct ctlr_info *h) h->cmd_sg_list = NULL; } -static int hpsa_allocate_sg_chain_blocks(struct ctlr_info *h) +static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h) { int i; @@ -1580,6 +2065,39 @@ clean: return -ENOMEM; } +static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h, + struct io_accel2_cmd *cp, struct CommandList *c) +{ + struct ioaccel2_sg_element *chain_block; + u64 temp64; + u32 chain_size; + + chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex]; + chain_size = le32_to_cpu(cp->sg[0].length); + temp64 = pci_map_single(h->pdev, chain_block, chain_size, + PCI_DMA_TODEVICE); + if (dma_mapping_error(&h->pdev->dev, temp64)) { + /* prevent subsequent unmapping */ + cp->sg->address = 0; + return -1; + } + cp->sg->address = cpu_to_le64(temp64); + return 0; +} + +static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h, + struct io_accel2_cmd *cp) +{ + struct ioaccel2_sg_element *chain_sg; + u64 temp64; + u32 chain_size; + + chain_sg = cp->sg; + temp64 = le64_to_cpu(chain_sg->address); + chain_size = le32_to_cpu(cp->sg[0].length); + pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE); +} + static int hpsa_map_sg_chain_block(struct ctlr_info *h, struct CommandList *c) { @@ -1629,6 +2147,7 @@ static int handle_ioaccel_mode2_error(struct ctlr_info *h, { int data_len; int retry = 0; + u32 ioaccel2_resid = 0; switch (c2->error_data.serv_response) { case IOACCEL2_SERV_RESPONSE_COMPLETE: @@ -1636,9 +2155,6 @@ static int handle_ioaccel_mode2_error(struct ctlr_info *h, case IOACCEL2_STATUS_SR_TASK_COMP_GOOD: break; case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND: - dev_warn(&h->pdev->dev, - "%s: task complete with check condition.\n", - "HP SSD Smart Path"); cmd->result |= SAM_STAT_CHECK_CONDITION; if (c2->error_data.data_present != IOACCEL2_SENSE_DATA_PRESENT) { @@ -1658,58 +2174,56 @@ static int handle_ioaccel_mode2_error(struct ctlr_info *h, retry = 1; break; case IOACCEL2_STATUS_SR_TASK_COMP_BUSY: - dev_warn(&h->pdev->dev, - "%s: task complete with BUSY status.\n", - "HP SSD Smart Path"); retry = 1; break; case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON: - dev_warn(&h->pdev->dev, - "%s: task complete with reservation conflict.\n", - "HP SSD Smart Path"); retry = 1; break; case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL: - /* Make scsi midlayer do unlimited retries */ - cmd->result = DID_IMM_RETRY << 16; + retry = 1; break; case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED: - dev_warn(&h->pdev->dev, - "%s: task complete with aborted status.\n", - "HP SSD Smart Path"); retry = 1; break; default: - dev_warn(&h->pdev->dev, - "%s: task complete with unrecognized status: 0x%02x\n", - "HP SSD Smart Path", c2->error_data.status); retry = 1; break; } break; case IOACCEL2_SERV_RESPONSE_FAILURE: - /* don't expect to get here. */ - dev_warn(&h->pdev->dev, - "unexpected delivery or target failure, status = 0x%02x\n", - c2->error_data.status); - retry = 1; + switch (c2->error_data.status) { + case IOACCEL2_STATUS_SR_IO_ERROR: + case IOACCEL2_STATUS_SR_IO_ABORTED: + case IOACCEL2_STATUS_SR_OVERRUN: + retry = 1; + break; + case IOACCEL2_STATUS_SR_UNDERRUN: + cmd->result = (DID_OK << 16); /* host byte */ + cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ + ioaccel2_resid = get_unaligned_le32( + &c2->error_data.resid_cnt[0]); + scsi_set_resid(cmd, ioaccel2_resid); + break; + case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE: + case IOACCEL2_STATUS_SR_INVALID_DEVICE: + case IOACCEL2_STATUS_SR_IOACCEL_DISABLED: + /* We will get an event from ctlr to trigger rescan */ + retry = 1; + break; + default: + retry = 1; + } break; case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE: break; case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS: break; case IOACCEL2_SERV_RESPONSE_TMF_REJECTED: - dev_warn(&h->pdev->dev, "task management function rejected.\n"); retry = 1; break; case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN: - dev_warn(&h->pdev->dev, "task management function invalid LUN\n"); break; default: - dev_warn(&h->pdev->dev, - "%s: Unrecognized server response: 0x%02x\n", - "HP SSD Smart Path", - c2->error_data.serv_response); retry = 1; break; } @@ -1717,6 +2231,87 @@ static int handle_ioaccel_mode2_error(struct ctlr_info *h, return retry; /* retry on raid path? */ } +static void hpsa_cmd_resolve_events(struct ctlr_info *h, + struct CommandList *c) +{ + bool do_wake = false; + + /* + * Prevent the following race in the abort handler: + * + * 1. LLD is requested to abort a SCSI command + * 2. The SCSI command completes + * 3. The struct CommandList associated with step 2 is made available + * 4. New I/O request to LLD to another LUN re-uses struct CommandList + * 5. Abort handler follows scsi_cmnd->host_scribble and + * finds struct CommandList and tries to aborts it + * Now we have aborted the wrong command. + * + * Reset c->scsi_cmd here so that the abort or reset handler will know + * this command has completed. Then, check to see if the handler is + * waiting for this command, and, if so, wake it. + */ + c->scsi_cmd = SCSI_CMD_IDLE; + mb(); /* Declare command idle before checking for pending events. */ + if (c->abort_pending) { + do_wake = true; + c->abort_pending = false; + } + if (c->reset_pending) { + unsigned long flags; + struct hpsa_scsi_dev_t *dev; + + /* + * There appears to be a reset pending; lock the lock and + * reconfirm. If so, then decrement the count of outstanding + * commands and wake the reset command if this is the last one. + */ + spin_lock_irqsave(&h->lock, flags); + dev = c->reset_pending; /* Re-fetch under the lock. */ + if (dev && atomic_dec_and_test(&dev->reset_cmds_out)) + do_wake = true; + c->reset_pending = NULL; + spin_unlock_irqrestore(&h->lock, flags); + } + + if (do_wake) + wake_up_all(&h->event_sync_wait_queue); +} + +static void hpsa_cmd_resolve_and_free(struct ctlr_info *h, + struct CommandList *c) +{ + hpsa_cmd_resolve_events(h, c); + cmd_tagged_free(h, c); +} + +static void hpsa_cmd_free_and_done(struct ctlr_info *h, + struct CommandList *c, struct scsi_cmnd *cmd) +{ + hpsa_cmd_resolve_and_free(h, c); + cmd->scsi_done(cmd); +} + +static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c) +{ + INIT_WORK(&c->work, hpsa_command_resubmit_worker); + queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work); +} + +static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd) +{ + cmd->result = DID_ABORT << 16; +} + +static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c, + struct scsi_cmnd *cmd) +{ + hpsa_set_scsi_cmd_aborted(cmd); + dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n", + c->Request.CDB, c->err_info->ScsiStatus); + hpsa_cmd_resolve_and_free(h, c); +} + static void process_ioaccel2_completion(struct ctlr_info *h, struct CommandList *c, struct scsi_cmnd *cmd, struct hpsa_scsi_dev_t *dev) @@ -1725,35 +2320,56 @@ static void process_ioaccel2_completion(struct ctlr_info *h, /* check for good status */ if (likely(c2->error_data.serv_response == 0 && - c2->error_data.status == 0)) { - cmd_free(h, c); - cmd->scsi_done(cmd); - return; - } + c2->error_data.status == 0)) + return hpsa_cmd_free_and_done(h, c, cmd); - /* Any RAID offload error results in retry which will use + /* + * Any RAID offload error results in retry which will use * the normal I/O path so the controller can handle whatever's * wrong. */ - if (is_logical_dev_addr_mode(dev->scsi3addr) && + if (is_logical_device(dev) && c2->error_data.serv_response == IOACCEL2_SERV_RESPONSE_FAILURE) { if (c2->error_data.status == IOACCEL2_STATUS_SR_IOACCEL_DISABLED) dev->offload_enabled = 0; - goto retry_cmd; + + return hpsa_retry_cmd(h, c); } if (handle_ioaccel_mode2_error(h, c, cmd, c2)) - goto retry_cmd; + return hpsa_retry_cmd(h, c); - cmd_free(h, c); - cmd->scsi_done(cmd); - return; + return hpsa_cmd_free_and_done(h, c, cmd); +} -retry_cmd: - INIT_WORK(&c->work, hpsa_command_resubmit_worker); - queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work); +/* Returns 0 on success, < 0 otherwise. */ +static int hpsa_evaluate_tmf_status(struct ctlr_info *h, + struct CommandList *cp) +{ + u8 tmf_status = cp->err_info->ScsiStatus; + + switch (tmf_status) { + case CISS_TMF_COMPLETE: + /* + * CISS_TMF_COMPLETE never happens, instead, + * ei->CommandStatus == 0 for this case. + */ + case CISS_TMF_SUCCESS: + return 0; + case CISS_TMF_INVALID_FRAME: + case CISS_TMF_NOT_SUPPORTED: + case CISS_TMF_FAILED: + case CISS_TMF_WRONG_LUN: + case CISS_TMF_OVERLAPPED_TAG: + break; + default: + dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n", + tmf_status); + break; + } + return -tmf_status; } static void complete_scsi_command(struct CommandList *cp) @@ -1762,51 +2378,58 @@ static void complete_scsi_command(struct CommandList *cp) struct ctlr_info *h; struct ErrorInfo *ei; struct hpsa_scsi_dev_t *dev; + struct io_accel2_cmd *c2; - unsigned char sense_key; - unsigned char asc; /* additional sense code */ - unsigned char ascq; /* additional sense code qualifier */ + u8 sense_key; + u8 asc; /* additional sense code */ + u8 ascq; /* additional sense code qualifier */ unsigned long sense_data_size; ei = cp->err_info; cmd = cp->scsi_cmd; h = cp->h; dev = cmd->device->hostdata; + c2 = &h->ioaccel2_cmd_pool[cp->cmdindex]; scsi_dma_unmap(cmd); /* undo the DMA mappings */ if ((cp->cmd_type == CMD_SCSI) && (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries)) hpsa_unmap_sg_chain_block(h, cp); + if ((cp->cmd_type == CMD_IOACCEL2) && + (c2->sg[0].chain_indicator == IOACCEL2_CHAIN)) + hpsa_unmap_ioaccel2_sg_chain_block(h, c2); + cmd->result = (DID_OK << 16); /* host byte */ cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1) atomic_dec(&cp->phys_disk->ioaccel_cmds_out); - if (cp->cmd_type == CMD_IOACCEL2) - return process_ioaccel2_completion(h, cp, cmd, dev); - - cmd->result |= ei->ScsiStatus; + /* + * We check for lockup status here as it may be set for + * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by + * fail_all_oustanding_cmds() + */ + if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) { + /* DID_NO_CONNECT will prevent a retry */ + cmd->result = DID_NO_CONNECT << 16; + return hpsa_cmd_free_and_done(h, cp, cmd); + } - scsi_set_resid(cmd, ei->ResidualCnt); - if (ei->CommandStatus == 0) { - if (cp->cmd_type == CMD_IOACCEL1) - atomic_dec(&cp->phys_disk->ioaccel_cmds_out); - cmd_free(h, cp); - cmd->scsi_done(cmd); - return; + if ((unlikely(hpsa_is_pending_event(cp)))) { + if (cp->reset_pending) + return hpsa_cmd_resolve_and_free(h, cp); + if (cp->abort_pending) + return hpsa_cmd_abort_and_free(h, cp, cmd); } - /* copy the sense data */ - if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo)) - sense_data_size = SCSI_SENSE_BUFFERSIZE; - else - sense_data_size = sizeof(ei->SenseInfo); - if (ei->SenseLen < sense_data_size) - sense_data_size = ei->SenseLen; + if (cp->cmd_type == CMD_IOACCEL2) + return process_ioaccel2_completion(h, cp, cmd, dev); - memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size); + scsi_set_resid(cmd, ei->ResidualCnt); + if (ei->CommandStatus == 0) + return hpsa_cmd_free_and_done(h, cp, cmd); /* For I/O accelerator commands, copy over some fields to the normal * CISS header used below for error handling. @@ -1825,13 +2448,10 @@ static void complete_scsi_command(struct CommandList *cp) * the normal I/O path so the controller can handle whatever's * wrong. */ - if (is_logical_dev_addr_mode(dev->scsi3addr)) { + if (is_logical_device(dev)) { if (ei->CommandStatus == CMD_IOACCEL_DISABLED) dev->offload_enabled = 0; - INIT_WORK(&cp->work, hpsa_command_resubmit_worker); - queue_work_on(raw_smp_processor_id(), - h->resubmit_wq, &cp->work); - return; + return hpsa_retry_cmd(h, cp); } } @@ -1839,14 +2459,18 @@ static void complete_scsi_command(struct CommandList *cp) switch (ei->CommandStatus) { case CMD_TARGET_STATUS: - if (ei->ScsiStatus) { - /* Get sense key */ - sense_key = 0xf & ei->SenseInfo[2]; - /* Get additional sense code */ - asc = ei->SenseInfo[12]; - /* Get addition sense code qualifier */ - ascq = ei->SenseInfo[13]; - } + cmd->result |= ei->ScsiStatus; + /* copy the sense data */ + if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo)) + sense_data_size = SCSI_SENSE_BUFFERSIZE; + else + sense_data_size = sizeof(ei->SenseInfo); + if (ei->SenseLen < sense_data_size) + sense_data_size = ei->SenseLen; + memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size); + if (ei->ScsiStatus) + decode_sense_data(ei->SenseInfo, sense_data_size, + &sense_key, &asc, &ascq); if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) { if (sense_key == ABORTED_COMMAND) { cmd->result |= DID_SOFT_ERROR << 16; @@ -1918,10 +2542,8 @@ static void complete_scsi_command(struct CommandList *cp) cp->Request.CDB); break; case CMD_ABORTED: - cmd->result = DID_ABORT << 16; - dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n", - cp->Request.CDB, ei->ScsiStatus); - break; + /* Return now to avoid calling scsi_done(). */ + return hpsa_cmd_abort_and_free(h, cp, cmd); case CMD_ABORT_FAILED: cmd->result = DID_ERROR << 16; dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n", @@ -1941,6 +2563,10 @@ static void complete_scsi_command(struct CommandList *cp) cmd->result = DID_ERROR << 16; dev_warn(&h->pdev->dev, "Command unabortable\n"); break; + case CMD_TMF_STATUS: + if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */ + cmd->result = DID_ERROR << 16; + break; case CMD_IOACCEL_DISABLED: /* This only handles the direct pass-through case since RAID * offload is handled above. Just attempt a retry. @@ -1954,8 +2580,8 @@ static void complete_scsi_command(struct CommandList *cp) dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n", cp, ei->CommandStatus); } - cmd_free(h, cp); - cmd->scsi_done(cmd); + + return hpsa_cmd_free_and_done(h, cp, cmd); } static void hpsa_pci_unmap(struct pci_dev *pdev, @@ -1998,14 +2624,36 @@ static int hpsa_map_one(struct pci_dev *pdev, return 0; } -static inline void hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, - struct CommandList *c) +#define NO_TIMEOUT ((unsigned long) -1) +#define DEFAULT_TIMEOUT 30000 /* milliseconds */ +static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h, + struct CommandList *c, int reply_queue, unsigned long timeout_msecs) { DECLARE_COMPLETION_ONSTACK(wait); c->waiting = &wait; - enqueue_cmd_and_start_io(h, c); - wait_for_completion(&wait); + __enqueue_cmd_and_start_io(h, c, reply_queue); + if (timeout_msecs == NO_TIMEOUT) { + /* TODO: get rid of this no-timeout thing */ + wait_for_completion_io(&wait); + return IO_OK; + } + if (!wait_for_completion_io_timeout(&wait, + msecs_to_jiffies(timeout_msecs))) { + dev_warn(&h->pdev->dev, "Command timed out.\n"); + return -ETIMEDOUT; + } + return IO_OK; +} + +static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c, + int reply_queue, unsigned long timeout_msecs) +{ + if (unlikely(lockup_detected(h))) { + c->err_info->CommandStatus = CMD_CTLR_LOCKUP; + return IO_OK; + } + return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs); } static u32 lockup_detected(struct ctlr_info *h) @@ -2020,25 +2668,19 @@ static u32 lockup_detected(struct ctlr_info *h) return rc; } -static void hpsa_scsi_do_simple_cmd_core_if_no_lockup(struct ctlr_info *h, - struct CommandList *c) -{ - /* If controller lockup detected, fake a hardware error. */ - if (unlikely(lockup_detected(h))) - c->err_info->CommandStatus = CMD_HARDWARE_ERR; - else - hpsa_scsi_do_simple_cmd_core(h, c); -} - #define MAX_DRIVER_CMD_RETRIES 25 -static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, - struct CommandList *c, int data_direction) +static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, + struct CommandList *c, int data_direction, unsigned long timeout_msecs) { int backoff_time = 10, retry_count = 0; + int rc; do { memset(c->err_info, 0, sizeof(*c->err_info)); - hpsa_scsi_do_simple_cmd_core(h, c); + rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, + timeout_msecs); + if (rc) + break; retry_count++; if (retry_count > 3) { msleep(backoff_time); @@ -2049,6 +2691,9 @@ static void hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h, check_for_busy(h, c)) && retry_count <= MAX_DRIVER_CMD_RETRIES); hpsa_pci_unmap(h->pdev, c, 1, data_direction); + if (retry_count > MAX_DRIVER_CMD_RETRIES) + rc = -EIO; + return rc; } static void hpsa_print_cmd(struct ctlr_info *h, char *txt, @@ -2072,16 +2717,23 @@ static void hpsa_scsi_interpret_error(struct ctlr_info *h, { const struct ErrorInfo *ei = cp->err_info; struct device *d = &cp->h->pdev->dev; - const u8 *sd = ei->SenseInfo; + u8 sense_key, asc, ascq; + int sense_len; switch (ei->CommandStatus) { case CMD_TARGET_STATUS: + if (ei->SenseLen > sizeof(ei->SenseInfo)) + sense_len = sizeof(ei->SenseInfo); + else + sense_len = ei->SenseLen; + decode_sense_data(ei->SenseInfo, sense_len, + &sense_key, &asc, &ascq); hpsa_print_cmd(h, "SCSI status", cp); if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) - dev_warn(d, "SCSI Status = 02, Sense key = %02x, ASC = %02x, ASCQ = %02x\n", - sd[2] & 0x0f, sd[12], sd[13]); + dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n", + sense_key, asc, ascq); else - dev_warn(d, "SCSI Status = %02x\n", ei->ScsiStatus); + dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus); if (ei->ScsiStatus == 0) dev_warn(d, "SCSI status is abnormally zero. " "(probably indicates selection timeout " @@ -2125,6 +2777,9 @@ static void hpsa_scsi_interpret_error(struct ctlr_info *h, case CMD_UNABORTABLE: hpsa_print_cmd(h, "unabortable", cp); break; + case CMD_CTLR_LOCKUP: + hpsa_print_cmd(h, "controller lockup detected", cp); + break; default: hpsa_print_cmd(h, "unknown status", cp); dev_warn(d, "Unknown command status %x\n", @@ -2142,17 +2797,15 @@ static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr, c = cmd_alloc(h); - if (c == NULL) { - dev_warn(&h->pdev->dev, "cmd_alloc returned NULL!\n"); - return -ENOMEM; - } - if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize, page, scsi3addr, TYPE_CMD)) { rc = -1; goto out; } - hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_FROMDEVICE, NO_TIMEOUT); + if (rc) + goto out; ei = c->err_info; if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { hpsa_scsi_interpret_error(h, c); @@ -2163,63 +2816,150 @@ out: return rc; } -static int hpsa_bmic_ctrl_mode_sense(struct ctlr_info *h, - unsigned char *scsi3addr, unsigned char page, - struct bmic_controller_parameters *buf, size_t bufsize) +static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr, + u8 reset_type, int reply_queue) { int rc = IO_OK; struct CommandList *c; struct ErrorInfo *ei; c = cmd_alloc(h); - if (c == NULL) { /* trouble... */ - dev_warn(&h->pdev->dev, "cmd_alloc returned NULL!\n"); - return -ENOMEM; - } - if (fill_cmd(c, BMIC_SENSE_CONTROLLER_PARAMETERS, h, buf, bufsize, - page, scsi3addr, TYPE_CMD)) { - rc = -1; + + /* fill_cmd can't fail here, no data buffer to map. */ + (void) fill_cmd(c, reset_type, h, NULL, 0, 0, + scsi3addr, TYPE_MSG); + rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); + if (rc) { + dev_warn(&h->pdev->dev, "Failed to send reset command\n"); goto out; } - hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); + /* no unmap needed here because no data xfer. */ + ei = c->err_info; - if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { + if (ei->CommandStatus != 0) { hpsa_scsi_interpret_error(h, c); rc = -1; } out: cmd_free(h, c); return rc; +} + +static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c, + struct hpsa_scsi_dev_t *dev, + unsigned char *scsi3addr) +{ + int i; + bool match = false; + struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; + struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2; + + if (hpsa_is_cmd_idle(c)) + return false; + + switch (c->cmd_type) { + case CMD_SCSI: + case CMD_IOCTL_PEND: + match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes, + sizeof(c->Header.LUN.LunAddrBytes)); + break; + + case CMD_IOACCEL1: + case CMD_IOACCEL2: + if (c->phys_disk == dev) { + /* HBA mode match */ + match = true; + } else { + /* Possible RAID mode -- check each phys dev. */ + /* FIXME: Do we need to take out a lock here? If + * so, we could just call hpsa_get_pdisk_of_ioaccel2() + * instead. */ + for (i = 0; i < dev->nphysical_disks && !match; i++) { + /* FIXME: an alternate test might be + * + * match = dev->phys_disk[i]->ioaccel_handle + * == c2->scsi_nexus; */ + match = dev->phys_disk[i] == c->phys_disk; + } + } + break; + + case IOACCEL2_TMF: + for (i = 0; i < dev->nphysical_disks && !match; i++) { + match = dev->phys_disk[i]->ioaccel_handle == + le32_to_cpu(ac->it_nexus); + } + break; + + case 0: /* The command is in the middle of being initialized. */ + match = false; + break; + + default: + dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n", + c->cmd_type); + BUG(); } -static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr, - u8 reset_type) + return match; +} + +static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, + unsigned char *scsi3addr, u8 reset_type, int reply_queue) { - int rc = IO_OK; - struct CommandList *c; - struct ErrorInfo *ei; + int i; + int rc = 0; - c = cmd_alloc(h); + /* We can really only handle one reset at a time */ + if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) { + dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n"); + return -EINTR; + } - if (c == NULL) { /* trouble... */ - dev_warn(&h->pdev->dev, "cmd_alloc returned NULL!\n"); - return -ENOMEM; + BUG_ON(atomic_read(&dev->reset_cmds_out) != 0); + + for (i = 0; i < h->nr_cmds; i++) { + struct CommandList *c = h->cmd_pool + i; + int refcount = atomic_inc_return(&c->refcount); + + if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) { + unsigned long flags; + + /* + * Mark the target command as having a reset pending, + * then lock a lock so that the command cannot complete + * while we're considering it. If the command is not + * idle then count it; otherwise revoke the event. + */ + c->reset_pending = dev; + spin_lock_irqsave(&h->lock, flags); /* Implied MB */ + if (!hpsa_is_cmd_idle(c)) + atomic_inc(&dev->reset_cmds_out); + else + c->reset_pending = NULL; + spin_unlock_irqrestore(&h->lock, flags); + } + + cmd_free(h, c); } - /* fill_cmd can't fail here, no data buffer to map. */ - (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, - scsi3addr, TYPE_MSG); - c->Request.CDB[1] = reset_type; /* fill_cmd defaults to LUN reset */ - hpsa_scsi_do_simple_cmd_core(h, c); - /* no unmap needed here because no data xfer. */ + rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue); + if (!rc) + wait_event(h->event_sync_wait_queue, + atomic_read(&dev->reset_cmds_out) == 0 || + lockup_detected(h)); - ei = c->err_info; - if (ei->CommandStatus != 0) { - hpsa_scsi_interpret_error(h, c); - rc = -1; + if (unlikely(lockup_detected(h))) { + dev_warn(&h->pdev->dev, + "Controller lockup detected during reset wait\n"); + rc = -ENODEV; } - cmd_free(h, c); + + if (unlikely(rc)) + atomic_set(&dev->reset_cmds_out, 0); + + mutex_unlock(&h->reset_mutex); return rc; } @@ -2328,23 +3068,23 @@ static int hpsa_get_raid_map(struct ctlr_info *h, struct ErrorInfo *ei; c = cmd_alloc(h); - if (c == NULL) { - dev_warn(&h->pdev->dev, "cmd_alloc returned NULL!\n"); - return -ENOMEM; - } + if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map, sizeof(this_device->raid_map), 0, scsi3addr, TYPE_CMD)) { - dev_warn(&h->pdev->dev, "Out of memory in hpsa_get_raid_map()\n"); + dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n"); cmd_free(h, c); - return -ENOMEM; + return -1; } - hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_FROMDEVICE, NO_TIMEOUT); + if (rc) + goto out; ei = c->err_info; if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { hpsa_scsi_interpret_error(h, c); - cmd_free(h, c); - return -1; + rc = -1; + goto out; } cmd_free(h, c); @@ -2356,6 +3096,69 @@ static int hpsa_get_raid_map(struct ctlr_info *h, } hpsa_debug_map_buff(h, rc, &this_device->raid_map); return rc; +out: + cmd_free(h, c); + return rc; +} + +static int hpsa_bmic_sense_subsystem_information(struct ctlr_info *h, + unsigned char scsi3addr[], u16 bmic_device_index, + struct bmic_sense_subsystem_info *buf, size_t bufsize) +{ + int rc = IO_OK; + struct CommandList *c; + struct ErrorInfo *ei; + + c = cmd_alloc(h); + + rc = fill_cmd(c, BMIC_SENSE_SUBSYSTEM_INFORMATION, h, buf, bufsize, + 0, RAID_CTLR_LUNID, TYPE_CMD); + if (rc) + goto out; + + c->Request.CDB[2] = bmic_device_index & 0xff; + c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff; + + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_FROMDEVICE, NO_TIMEOUT); + if (rc) + goto out; + ei = c->err_info; + if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { + hpsa_scsi_interpret_error(h, c); + rc = -1; + } +out: + cmd_free(h, c); + return rc; +} + +static int hpsa_bmic_id_controller(struct ctlr_info *h, + struct bmic_identify_controller *buf, size_t bufsize) +{ + int rc = IO_OK; + struct CommandList *c; + struct ErrorInfo *ei; + + c = cmd_alloc(h); + + rc = fill_cmd(c, BMIC_IDENTIFY_CONTROLLER, h, buf, bufsize, + 0, RAID_CTLR_LUNID, TYPE_CMD); + if (rc) + goto out; + + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_FROMDEVICE, NO_TIMEOUT); + if (rc) + goto out; + ei = c->err_info; + if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { + hpsa_scsi_interpret_error(h, c); + rc = -1; + } +out: + cmd_free(h, c); + return rc; } static int hpsa_bmic_id_physical_device(struct ctlr_info *h, @@ -2375,7 +3178,8 @@ static int hpsa_bmic_id_physical_device(struct ctlr_info *h, c->Request.CDB[2] = bmic_device_index & 0xff; c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff; - hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); + hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE, + NO_TIMEOUT); ei = c->err_info; if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { hpsa_scsi_interpret_error(h, c); @@ -2383,9 +3187,71 @@ static int hpsa_bmic_id_physical_device(struct ctlr_info *h, } out: cmd_free(h, c); + return rc; } +static u64 hpsa_get_sas_address_from_report_physical(struct ctlr_info *h, + unsigned char *scsi3addr) +{ + struct ReportExtendedLUNdata *physdev; + u32 nphysicals; + u64 sa = 0; + int i; + + physdev = kzalloc(sizeof(*physdev), GFP_KERNEL); + if (!physdev) + return 0; + + if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) { + dev_err(&h->pdev->dev, "report physical LUNs failed.\n"); + kfree(physdev); + return 0; + } + nphysicals = get_unaligned_be32(physdev->LUNListLength) / 24; + + for (i = 0; i < nphysicals; i++) + if (!memcmp(&physdev->LUN[i].lunid[0], scsi3addr, 8)) { + sa = get_unaligned_be64(&physdev->LUN[i].wwid[0]); + break; + } + + kfree(physdev); + + return sa; +} + +static void hpsa_get_sas_address(struct ctlr_info *h, unsigned char *scsi3addr, + struct hpsa_scsi_dev_t *dev) +{ + int rc; + u64 sa = 0; + + if (is_hba_lunid(scsi3addr)) { + struct bmic_sense_subsystem_info *ssi; + + ssi = kzalloc(sizeof(*ssi), GFP_KERNEL); + if (ssi == NULL) { + dev_warn(&h->pdev->dev, + "%s: out of memory\n", __func__); + return; + } + + rc = hpsa_bmic_sense_subsystem_information(h, + scsi3addr, 0, ssi, sizeof(*ssi)); + if (rc == 0) { + sa = get_unaligned_be64(ssi->primary_world_wide_id); + h->sas_address = sa; + } + + kfree(ssi); + } else + sa = hpsa_get_sas_address_from_report_physical(h, scsi3addr); + + dev->sas_address = sa; +} + +/* Get a device id from inquiry page 0x83 */ static int hpsa_vpd_page_supported(struct ctlr_info *h, unsigned char scsi3addr[], u8 page) { @@ -2438,6 +3304,7 @@ static void hpsa_get_ioaccel_status(struct ctlr_info *h, this_device->offload_config = 0; this_device->offload_enabled = 0; + this_device->offload_to_be_enabled = 0; buf = kzalloc(64, GFP_KERNEL); if (!buf) @@ -2461,6 +3328,7 @@ static void hpsa_get_ioaccel_status(struct ctlr_info *h, if (hpsa_get_raid_map(h, scsi3addr, this_device)) this_device->offload_enabled = 0; } + this_device->offload_to_be_enabled = this_device->offload_enabled; out: kfree(buf); return; @@ -2468,7 +3336,7 @@ out: /* Get the device id from inquiry page 0x83 */ static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, - unsigned char *device_id, int buflen) + unsigned char *device_id, int index, int buflen) { int rc; unsigned char *buf; @@ -2480,8 +3348,10 @@ static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr, return -ENOMEM; rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64); if (rc == 0) - memcpy(device_id, &buf[8], buflen); + memcpy(device_id, &buf[index], buflen); + kfree(buf); + return rc != 0; } @@ -2495,10 +3365,7 @@ static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, struct ErrorInfo *ei; c = cmd_alloc(h); - if (c == NULL) { /* trouble... */ - dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); - return -1; - } + /* address the controller */ memset(scsi3addr, 0, sizeof(scsi3addr)); if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h, @@ -2508,7 +3375,10 @@ static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical, } if (extended_response) c->Request.CDB[1] = extended_response; - hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE); + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_FROMDEVICE, NO_TIMEOUT); + if (rc) + goto out; ei = c->err_info; if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { @@ -2600,8 +3470,10 @@ static int hpsa_volume_offline(struct ctlr_info *h, unsigned char scsi3addr[]) { struct CommandList *c; - unsigned char *sense, sense_key, asc, ascq; - int ldstat = 0; + unsigned char *sense; + u8 sense_key, asc, ascq; + int sense_len; + int rc, ldstat = 0; u16 cmd_status; u8 scsi_status; #define ASC_LUN_NOT_READY 0x04 @@ -2609,14 +3481,19 @@ static int hpsa_volume_offline(struct ctlr_info *h, #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02 c = cmd_alloc(h); - if (!c) - return 0; + (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD); - hpsa_scsi_do_simple_cmd_core(h, c); + rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT); + if (rc) { + cmd_free(h, c); + return 0; + } sense = c->err_info->SenseInfo; - sense_key = sense[2]; - asc = sense[12]; - ascq = sense[13]; + if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo)) + sense_len = sizeof(c->err_info->SenseInfo); + else + sense_len = c->err_info->SenseLen; + decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq); cmd_status = c->err_info->CommandStatus; scsi_status = c->err_info->ScsiStatus; cmd_free(h, c); @@ -2634,6 +3511,7 @@ static int hpsa_volume_offline(struct ctlr_info *h, /* Keep volume offline in certain cases: */ switch (ldstat) { case HPSA_LV_UNDERGOING_ERASE: + case HPSA_LV_NOT_AVAILABLE: case HPSA_LV_UNDERGOING_RPI: case HPSA_LV_PENDING_RPI: case HPSA_LV_ENCRYPTED_NO_KEY: @@ -2656,6 +3534,64 @@ static int hpsa_volume_offline(struct ctlr_info *h, return 0; } +/* + * Find out if a logical device supports aborts by simply trying one. + * Smart Array may claim not to support aborts on logical drives, but + * if a MSA2000 * is connected, the drives on that will be presented + * by the Smart Array as logical drives, and aborts may be sent to + * those devices successfully. So the simplest way to find out is + * to simply try an abort and see how the device responds. + */ +static int hpsa_device_supports_aborts(struct ctlr_info *h, + unsigned char *scsi3addr) +{ + struct CommandList *c; + struct ErrorInfo *ei; + int rc = 0; + + u64 tag = (u64) -1; /* bogus tag */ + + /* Assume that physical devices support aborts */ + if (!is_logical_dev_addr_mode(scsi3addr)) + return 1; + + c = cmd_alloc(h); + + (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG); + (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT); + /* no unmap needed here because no data xfer. */ + ei = c->err_info; + switch (ei->CommandStatus) { + case CMD_INVALID: + rc = 0; + break; + case CMD_UNABORTABLE: + case CMD_ABORT_FAILED: + rc = 1; + break; + case CMD_TMF_STATUS: + rc = hpsa_evaluate_tmf_status(h, c); + break; + default: + rc = 0; + break; + } + cmd_free(h, c); + return rc; +} + +static void sanitize_inquiry_string(unsigned char *s, int len) +{ + bool terminated = false; + + for (; len > 0; (--len, ++s)) { + if (*s == 0) + terminated = true; + if (terminated || *s < 0x20 || *s > 0x7e) + *s = ' '; + } +} + static int hpsa_update_device_info(struct ctlr_info *h, unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device, unsigned char *is_OBDR_device) @@ -2668,10 +3604,13 @@ static int hpsa_update_device_info(struct ctlr_info *h, unsigned char *inq_buff; unsigned char *obdr_sig; + int rc = 0; inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); - if (!inq_buff) + if (!inq_buff) { + rc = -ENOMEM; goto bail_out; + } /* Do an inquiry to the device to see what it is. */ if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, @@ -2679,9 +3618,13 @@ static int hpsa_update_device_info(struct ctlr_info *h, /* Inquiry failed (msg printed already) */ dev_err(&h->pdev->dev, "hpsa_update_device_info: inquiry failed\n"); + rc = -EIO; goto bail_out; } + sanitize_inquiry_string(&inq_buff[8], 8); + sanitize_inquiry_string(&inq_buff[16], 16); + this_device->devtype = (inq_buff[0] & 0x1f); memcpy(this_device->scsi3addr, scsi3addr, 8); memcpy(this_device->vendor, &inq_buff[8], @@ -2690,7 +3633,7 @@ static int hpsa_update_device_info(struct ctlr_info *h, sizeof(this_device->model)); memset(this_device->device_id, 0, sizeof(this_device->device_id)); - hpsa_get_device_id(h, scsi3addr, this_device->device_id, + hpsa_get_device_id(h, scsi3addr, this_device->device_id, 8, sizeof(this_device->device_id)); if (this_device->devtype == TYPE_DISK && @@ -2708,6 +3651,8 @@ static int hpsa_update_device_info(struct ctlr_info *h, this_device->raid_level = RAID_UNKNOWN; this_device->offload_config = 0; this_device->offload_enabled = 0; + this_device->offload_to_be_enabled = 0; + this_device->hba_ioaccel_enabled = 0; this_device->volume_offline = 0; this_device->queue_depth = h->nr_cmds; } @@ -2721,123 +3666,72 @@ static int hpsa_update_device_info(struct ctlr_info *h, strncmp(obdr_sig, OBDR_TAPE_SIG, OBDR_SIG_LEN) == 0); } - kfree(inq_buff); return 0; bail_out: kfree(inq_buff); - return 1; + return rc; } -static unsigned char *ext_target_model[] = { - "MSA2012", - "MSA2024", - "MSA2312", - "MSA2324", - "P2000 G3 SAS", - "MSA 2040 SAS", - NULL, -}; - -static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device) +static void hpsa_update_device_supports_aborts(struct ctlr_info *h, + struct hpsa_scsi_dev_t *dev, u8 *scsi3addr) { - int i; - - for (i = 0; ext_target_model[i]; i++) - if (strncmp(device->model, ext_target_model[i], - strlen(ext_target_model[i])) == 0) - return 1; - return 0; + unsigned long flags; + int rc, entry; + /* + * See if this device supports aborts. If we already know + * the device, we already know if it supports aborts, otherwise + * we have to find out if it supports aborts by trying one. + */ + spin_lock_irqsave(&h->devlock, flags); + rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry); + if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) && + entry >= 0 && entry < h->ndevices) { + dev->supports_aborts = h->dev[entry]->supports_aborts; + spin_unlock_irqrestore(&h->devlock, flags); + } else { + spin_unlock_irqrestore(&h->devlock, flags); + dev->supports_aborts = + hpsa_device_supports_aborts(h, scsi3addr); + if (dev->supports_aborts < 0) + dev->supports_aborts = 0; + } } -/* Helper function to assign bus, target, lun mapping of devices. - * Puts non-external target logical volumes on bus 0, external target logical - * volumes on bus 1, physical devices on bus 2. and the hba on bus 3. +/* + * Helper function to assign bus, target, lun mapping of devices. * Logical drive target and lun are assigned at this time, but * physical device lun and target assignment are deferred (assigned * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.) - */ +*/ static void figure_bus_target_lun(struct ctlr_info *h, u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device) { - u32 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes)); + u32 lunid = get_unaligned_le32(lunaddrbytes); if (!is_logical_dev_addr_mode(lunaddrbytes)) { /* physical device, target and lun filled in later */ if (is_hba_lunid(lunaddrbytes)) - hpsa_set_bus_target_lun(device, 3, 0, lunid & 0x3fff); + hpsa_set_bus_target_lun(device, + HPSA_HBA_BUS, 0, lunid & 0x3fff); else /* defer target, lun assignment for physical devices */ - hpsa_set_bus_target_lun(device, 2, -1, -1); + hpsa_set_bus_target_lun(device, + HPSA_PHYSICAL_DEVICE_BUS, -1, -1); return; } /* It's a logical device */ - if (is_ext_target(h, device)) { - /* external target way, put logicals on bus 1 - * and match target/lun numbers box - * reports, other smart array, bus 0, target 0, match lunid - */ + if (device->external) { hpsa_set_bus_target_lun(device, - 1, (lunid >> 16) & 0x3fff, lunid & 0x00ff); + HPSA_EXTERNAL_RAID_VOLUME_BUS, (lunid >> 16) & 0x3fff, + lunid & 0x00ff); return; } - hpsa_set_bus_target_lun(device, 0, 0, lunid & 0x3fff); + hpsa_set_bus_target_lun(device, HPSA_RAID_VOLUME_BUS, + 0, lunid & 0x3fff); } -/* - * If there is no lun 0 on a target, linux won't find any devices. - * For the external targets (arrays), we have to manually detect the enclosure - * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report - * it for some reason. *tmpdevice is the target we're adding, - * this_device is a pointer into the current element of currentsd[] - * that we're building up in update_scsi_devices(), below. - * lunzerobits is a bitmap that tracks which targets already have a - * lun 0 assigned. - * Returns 1 if an enclosure was added, 0 if not. - */ -static int add_ext_target_dev(struct ctlr_info *h, - struct hpsa_scsi_dev_t *tmpdevice, - struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes, - unsigned long lunzerobits[], int *n_ext_target_devs) -{ - unsigned char scsi3addr[8]; - - if (test_bit(tmpdevice->target, lunzerobits)) - return 0; /* There is already a lun 0 on this target. */ - - if (!is_logical_dev_addr_mode(lunaddrbytes)) - return 0; /* It's the logical targets that may lack lun 0. */ - - if (!is_ext_target(h, tmpdevice)) - return 0; /* Only external target devices have this problem. */ - - if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */ - return 0; - - memset(scsi3addr, 0, 8); - scsi3addr[3] = tmpdevice->target; - if (is_hba_lunid(scsi3addr)) - return 0; /* Don't add the RAID controller here. */ - - if (is_scsi_rev_5(h)) - return 0; /* p1210m doesn't need to do this. */ - - if (*n_ext_target_devs >= MAX_EXT_TARGETS) { - dev_warn(&h->pdev->dev, "Maximum number of external " - "target devices exceeded. Check your hardware " - "configuration."); - return 0; - } - - if (hpsa_update_device_info(h, scsi3addr, this_device, NULL)) - return 0; - (*n_ext_target_devs)++; - hpsa_set_bus_target_lun(this_device, - tmpdevice->bus, tmpdevice->target, 0); - set_bit(tmpdevice->target, lunzerobits); - return 1; -} /* * Get address of physical disk used for an ioaccel2 mode command: @@ -2850,88 +3744,44 @@ static int add_ext_target_dev(struct ctlr_info *h, static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h, struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr) { - struct ReportExtendedLUNdata *physicals = NULL; - int responsesize = 24; /* size of physical extended response */ - int reportsize = sizeof(*physicals) + HPSA_MAX_PHYS_LUN * responsesize; - u32 nphysicals = 0; /* number of reported physical devs */ - int found = 0; /* found match (1) or not (0) */ - u32 find; /* handle we need to match */ + struct io_accel2_cmd *c2 = + &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex]; + unsigned long flags; int i; - struct scsi_cmnd *scmd; /* scsi command within request being aborted */ - struct hpsa_scsi_dev_t *d; /* device of request being aborted */ - struct io_accel2_cmd *c2a; /* ioaccel2 command to abort */ - __le32 it_nexus; /* 4 byte device handle for the ioaccel2 cmd */ - __le32 scsi_nexus; /* 4 byte device handle for the ioaccel2 cmd */ - if (ioaccel2_cmd_to_abort->cmd_type != CMD_IOACCEL2) - return 0; /* no match */ - - /* point to the ioaccel2 device handle */ - c2a = &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex]; - if (c2a == NULL) - return 0; /* no match */ - - scmd = (struct scsi_cmnd *) ioaccel2_cmd_to_abort->scsi_cmd; - if (scmd == NULL) - return 0; /* no match */ - - d = scmd->device->hostdata; - if (d == NULL) - return 0; /* no match */ + spin_lock_irqsave(&h->devlock, flags); + for (i = 0; i < h->ndevices; i++) + if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) { + memcpy(scsi3addr, h->dev[i]->scsi3addr, + sizeof(h->dev[i]->scsi3addr)); + spin_unlock_irqrestore(&h->devlock, flags); + return 1; + } + spin_unlock_irqrestore(&h->devlock, flags); + return 0; +} - it_nexus = cpu_to_le32(d->ioaccel_handle); - scsi_nexus = c2a->scsi_nexus; - find = le32_to_cpu(c2a->scsi_nexus); +static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position, + int i, int nphysicals, int nlocal_logicals) +{ + /* In report logicals, local logicals are listed first, + * then any externals. + */ + int logicals_start = nphysicals + (raid_ctlr_position == 0); - if (h->raid_offload_debug > 0) - dev_info(&h->pdev->dev, - "%s: scsi_nexus:0x%08x device id: 0x%02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x %02x%02x%02x%02x\n", - __func__, scsi_nexus, - d->device_id[0], d->device_id[1], d->device_id[2], - d->device_id[3], d->device_id[4], d->device_id[5], - d->device_id[6], d->device_id[7], d->device_id[8], - d->device_id[9], d->device_id[10], d->device_id[11], - d->device_id[12], d->device_id[13], d->device_id[14], - d->device_id[15]); - - /* Get the list of physical devices */ - physicals = kzalloc(reportsize, GFP_KERNEL); - if (physicals == NULL) - return 0; - if (hpsa_scsi_do_report_phys_luns(h, physicals, reportsize)) { - dev_err(&h->pdev->dev, - "Can't lookup %s device handle: report physical LUNs failed.\n", - "HP SSD Smart Path"); - kfree(physicals); + if (i == raid_ctlr_position) return 0; - } - nphysicals = be32_to_cpu(*((__be32 *)physicals->LUNListLength)) / - responsesize; - - /* find ioaccel2 handle in list of physicals: */ - for (i = 0; i < nphysicals; i++) { - struct ext_report_lun_entry *entry = &physicals->LUN[i]; - /* handle is in bytes 28-31 of each lun */ - if (entry->ioaccel_handle != find) - continue; /* didn't match */ - found = 1; - memcpy(scsi3addr, entry->lunid, 8); - if (h->raid_offload_debug > 0) - dev_info(&h->pdev->dev, - "%s: Searched h=0x%08x, Found h=0x%08x, scsiaddr 0x%8phN\n", - __func__, find, - entry->ioaccel_handle, scsi3addr); - break; /* found it */ - } + if (i < logicals_start) + return 0; - kfree(physicals); - if (found) - return 1; - else + /* i is in logicals range, but still within local logicals */ + if ((i - nphysicals - (raid_ctlr_position == 0)) < nlocal_logicals) return 0; + return 1; /* it's an external lun */ } + /* * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev, * logdev. The number of luns in physdev and logdev are returned in @@ -3002,43 +3852,21 @@ static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position, return NULL; } -static int hpsa_hba_mode_enabled(struct ctlr_info *h) -{ - int rc; - int hba_mode_enabled; - struct bmic_controller_parameters *ctlr_params; - ctlr_params = kzalloc(sizeof(struct bmic_controller_parameters), - GFP_KERNEL); - - if (!ctlr_params) - return -ENOMEM; - rc = hpsa_bmic_ctrl_mode_sense(h, RAID_CTLR_LUNID, 0, ctlr_params, - sizeof(struct bmic_controller_parameters)); - if (rc) { - kfree(ctlr_params); - return rc; - } - - hba_mode_enabled = - ((ctlr_params->nvram_flags & HBA_MODE_ENABLED_FLAG) != 0); - kfree(ctlr_params); - return hba_mode_enabled; -} - /* get physical drive ioaccel handle and queue depth */ static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, - u8 *lunaddrbytes, + struct ReportExtendedLUNdata *rlep, int rle_index, struct bmic_identify_physical_device *id_phys) { int rc; - struct ext_report_lun_entry *rle = - (struct ext_report_lun_entry *) lunaddrbytes; + struct ext_report_lun_entry *rle = &rlep->LUN[rle_index]; dev->ioaccel_handle = rle->ioaccel_handle; + if ((rle->device_flags & 0x08) && dev->ioaccel_handle) + dev->hba_ioaccel_enabled = 1; memset(id_phys, 0, sizeof(*id_phys)); - rc = hpsa_bmic_id_physical_device(h, lunaddrbytes, - GET_BMIC_DRIVE_NUMBER(lunaddrbytes), id_phys, + rc = hpsa_bmic_id_physical_device(h, &rle->lunid[0], + GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]), id_phys, sizeof(*id_phys)); if (!rc) /* Reserve space for FW operations */ @@ -3049,10 +3877,61 @@ static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h, DRIVE_CMDS_RESERVED_FOR_FW; else dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */ - atomic_set(&dev->ioaccel_cmds_out, 0); } -static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) +static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device, + struct ReportExtendedLUNdata *rlep, int rle_index, + struct bmic_identify_physical_device *id_phys) +{ + struct ext_report_lun_entry *rle = &rlep->LUN[rle_index]; + + if ((rle->device_flags & 0x08) && this_device->ioaccel_handle) + this_device->hba_ioaccel_enabled = 1; + + memcpy(&this_device->active_path_index, + &id_phys->active_path_number, + sizeof(this_device->active_path_index)); + memcpy(&this_device->path_map, + &id_phys->redundant_path_present_map, + sizeof(this_device->path_map)); + memcpy(&this_device->box, + &id_phys->alternate_paths_phys_box_on_port, + sizeof(this_device->box)); + memcpy(&this_device->phys_connector, + &id_phys->alternate_paths_phys_connector, + sizeof(this_device->phys_connector)); + memcpy(&this_device->bay, + &id_phys->phys_bay_in_box, + sizeof(this_device->bay)); +} + +/* get number of local logical disks. */ +static int hpsa_set_local_logical_count(struct ctlr_info *h, + struct bmic_identify_controller *id_ctlr, + u32 *nlocals) +{ + int rc; + + if (!id_ctlr) { + dev_warn(&h->pdev->dev, "%s: id_ctlr buffer is NULL.\n", + __func__); + return -ENOMEM; + } + memset(id_ctlr, 0, sizeof(*id_ctlr)); + rc = hpsa_bmic_id_controller(h, id_ctlr, sizeof(*id_ctlr)); + if (!rc) + if (id_ctlr->configured_logical_drive_count < 256) + *nlocals = id_ctlr->configured_logical_drive_count; + else + *nlocals = le16_to_cpu( + id_ctlr->extended_logical_unit_count); + else + *nlocals = -1; + return rc; +} + + +static void hpsa_update_scsi_devices(struct ctlr_info *h) { /* the idea here is we could get notified * that some devices have changed, so we do a report @@ -3067,14 +3946,16 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) struct ReportExtendedLUNdata *physdev_list = NULL; struct ReportLUNdata *logdev_list = NULL; struct bmic_identify_physical_device *id_phys = NULL; + struct bmic_identify_controller *id_ctlr = NULL; u32 nphysicals = 0; u32 nlogicals = 0; + u32 nlocal_logicals = 0; u32 ndev_allocated = 0; struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice; int ncurrent = 0; int i, n_ext_target_devs, ndevs_to_allocate; int raid_ctlr_position; - int rescan_hba_mode; + bool physical_device; DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS); currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL); @@ -3082,28 +3963,29 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL); tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL); id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL); + id_ctlr = kzalloc(sizeof(*id_ctlr), GFP_KERNEL); if (!currentsd || !physdev_list || !logdev_list || - !tmpdevice || !id_phys) { + !tmpdevice || !id_phys || !id_ctlr) { dev_err(&h->pdev->dev, "out of memory\n"); goto out; } memset(lunzerobits, 0, sizeof(lunzerobits)); - rescan_hba_mode = hpsa_hba_mode_enabled(h); - if (rescan_hba_mode < 0) - goto out; - - if (!h->hba_mode_enabled && rescan_hba_mode) - dev_warn(&h->pdev->dev, "HBA mode enabled\n"); - else if (h->hba_mode_enabled && !rescan_hba_mode) - dev_warn(&h->pdev->dev, "HBA mode disabled\n"); - - h->hba_mode_enabled = rescan_hba_mode; + h->drv_req_rescan = 0; /* cancel scheduled rescan - we're doing it. */ if (hpsa_gather_lun_info(h, physdev_list, &nphysicals, - logdev_list, &nlogicals)) + logdev_list, &nlogicals)) { + h->drv_req_rescan = 1; goto out; + } + + /* Set number of local logicals (non PTRAID) */ + if (hpsa_set_local_logical_count(h, id_ctlr, &nlocal_logicals)) { + dev_warn(&h->pdev->dev, + "%s: Can't determine number of local logical devices.\n", + __func__); + } /* We might see up to the maximum number of logical and physical disks * plus external target devices, and a device for the local RAID @@ -3124,6 +4006,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) if (!currentsd[i]) { dev_warn(&h->pdev->dev, "out of memory at %s:%d\n", __FILE__, __LINE__); + h->drv_req_rescan = 1; goto out; } ndev_allocated++; @@ -3138,37 +4021,74 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) n_ext_target_devs = 0; for (i = 0; i < nphysicals + nlogicals + 1; i++) { u8 *lunaddrbytes, is_OBDR = 0; + int rc = 0; + int phys_dev_index = i - (raid_ctlr_position == 0); + + physical_device = i < nphysicals + (raid_ctlr_position == 0); /* Figure out where the LUN ID info is coming from */ lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position, i, nphysicals, nlogicals, physdev_list, logdev_list); - /* skip masked physical devices. */ - if (lunaddrbytes[3] & 0xC0 && - i < nphysicals + (raid_ctlr_position == 0)) + + /* skip masked non-disk devices */ + if (MASKED_DEVICE(lunaddrbytes) && physical_device && + (physdev_list->LUN[phys_dev_index].device_flags & 0x01)) continue; /* Get device type, vendor, model, device id */ - if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice, - &is_OBDR)) - continue; /* skip it if we can't talk to it. */ + rc = hpsa_update_device_info(h, lunaddrbytes, tmpdevice, + &is_OBDR); + if (rc == -ENOMEM) { + dev_warn(&h->pdev->dev, + "Out of memory, rescan deferred.\n"); + h->drv_req_rescan = 1; + goto out; + } + if (rc) { + dev_warn(&h->pdev->dev, + "Inquiry failed, skipping device.\n"); + continue; + } + + /* Determine if this is a lun from an external target array */ + tmpdevice->external = + figure_external_status(h, raid_ctlr_position, i, + nphysicals, nlocal_logicals); + figure_bus_target_lun(h, lunaddrbytes, tmpdevice); + hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes); this_device = currentsd[ncurrent]; - /* - * For external target devices, we have to insert a LUN 0 which - * doesn't show up in CCISS_REPORT_PHYSICAL data, but there - * is nonetheless an enclosure device there. We have to - * present that otherwise linux won't find anything if - * there is no lun 0. + /* Turn on discovery_polling if there are ext target devices. + * Event-based change notification is unreliable for those. */ - if (add_ext_target_dev(h, tmpdevice, this_device, - lunaddrbytes, lunzerobits, - &n_ext_target_devs)) { - ncurrent++; - this_device = currentsd[ncurrent]; + if (!h->discovery_polling) { + if (tmpdevice->external) { + h->discovery_polling = 1; + dev_info(&h->pdev->dev, + "External target, activate discovery polling.\n"); + } } + *this_device = *tmpdevice; + this_device->physical_device = physical_device; + + /* + * Expose all devices except for physical devices that + * are masked. + */ + if (MASKED_DEVICE(lunaddrbytes) && this_device->physical_device) + this_device->expose_device = 0; + else + this_device->expose_device = 1; + + + /* + * Get the SAS address for physical devices that are exposed. + */ + if (this_device->physical_device && this_device->expose_device) + hpsa_get_sas_address(h, lunaddrbytes, this_device); switch (this_device->devtype) { case TYPE_ROM: @@ -3183,32 +4103,20 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) ncurrent++; break; case TYPE_DISK: - if (h->hba_mode_enabled) { - /* never use raid mapper in HBA mode */ + if (this_device->physical_device) { + /* The disk is in HBA mode. */ + /* Never use RAID mapper in HBA mode. */ this_device->offload_enabled = 0; - ncurrent++; - break; - } else if (h->acciopath_status) { - if (i >= nphysicals) { - ncurrent++; - break; - } - } else { - if (i < nphysicals) - break; - ncurrent++; - break; - } - if (h->transMethod & CFGTBL_Trans_io_accel1 || - h->transMethod & CFGTBL_Trans_io_accel2) { hpsa_get_ioaccel_drive_info(h, this_device, - lunaddrbytes, id_phys); - atomic_set(&this_device->ioaccel_cmds_out, 0); - ncurrent++; + physdev_list, phys_dev_index, id_phys); + hpsa_get_path_info(this_device, + physdev_list, phys_dev_index, id_phys); } + ncurrent++; break; case TYPE_TAPE: case TYPE_MEDIUM_CHANGER: + case TYPE_ENCLOSURE: ncurrent++; break; case TYPE_RAID: @@ -3227,8 +4135,19 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno) if (ncurrent >= HPSA_MAX_DEVICES) break; } - hpsa_update_log_drive_phys_drive_ptrs(h, currentsd, ncurrent); - adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent); + + if (h->sas_host == NULL) { + int rc = 0; + + rc = hpsa_add_sas_host(h); + if (rc) { + dev_warn(&h->pdev->dev, + "Could not add sas host %d\n", rc); + goto out; + } + } + + adjust_hpsa_scsi_table(h, currentsd, ncurrent); out: kfree(tmpdevice); for (i = 0; i < ndev_allocated; i++) @@ -3236,6 +4155,7 @@ out: kfree(currentsd); kfree(physdev_list); kfree(logdev_list); + kfree(id_ctlr); kfree(id_phys); } @@ -3260,7 +4180,7 @@ static int hpsa_scatter_gather(struct ctlr_info *h, struct scsi_cmnd *cmd) { struct scatterlist *sg; - int use_sg, i, sg_index, chained; + int use_sg, i, sg_limit, chained, last_sg; struct SGDescriptor *curr_sg; BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); @@ -3272,22 +4192,39 @@ static int hpsa_scatter_gather(struct ctlr_info *h, if (!use_sg) goto sglist_finished; + /* + * If the number of entries is greater than the max for a single list, + * then we have a chained list; we will set up all but one entry in the + * first list (the last entry is saved for link information); + * otherwise, we don't have a chained list and we'll set up at each of + * the entries in the one list. + */ curr_sg = cp->SG; - chained = 0; - sg_index = 0; - scsi_for_each_sg(cmd, sg, use_sg, i) { - if (i == h->max_cmd_sg_entries - 1 && - use_sg > h->max_cmd_sg_entries) { - chained = 1; - curr_sg = h->cmd_sg_list[cp->cmdindex]; - sg_index = 0; - } + chained = use_sg > h->max_cmd_sg_entries; + sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg; + last_sg = scsi_sg_count(cmd) - 1; + scsi_for_each_sg(cmd, sg, sg_limit, i) { hpsa_set_sg_descriptor(curr_sg, sg); curr_sg++; } + if (chained) { + /* + * Continue with the chained list. Set curr_sg to the chained + * list. Modify the limit to the total count less the entries + * we've already set up. Resume the scan at the list entry + * where the previous loop left off. + */ + curr_sg = h->cmd_sg_list[cp->cmdindex]; + sg_limit = use_sg - sg_limit; + for_each_sg(sg, sg, sg_limit, i) { + hpsa_set_sg_descriptor(curr_sg, sg); + curr_sg++; + } + } + /* Back the pointer up to the last entry and mark it as "last". */ - (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST); + (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST); if (use_sg + chained > h->maxSG) h->maxSG = use_sg + chained; @@ -3324,19 +4261,14 @@ static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len) case READ_6: case READ_12: if (*cdb_len == 6) { - block = (((u32) cdb[2]) << 8) | cdb[3]; + block = get_unaligned_be16(&cdb[2]); block_cnt = cdb[4]; + if (block_cnt == 0) + block_cnt = 256; } else { BUG_ON(*cdb_len != 12); - block = (((u32) cdb[2]) << 24) | - (((u32) cdb[3]) << 16) | - (((u32) cdb[4]) << 8) | - cdb[5]; - block_cnt = - (((u32) cdb[6]) << 24) | - (((u32) cdb[7]) << 16) | - (((u32) cdb[8]) << 8) | - cdb[9]; + block = get_unaligned_be32(&cdb[2]); + block_cnt = get_unaligned_be32(&cdb[6]); } if (block_cnt > 0xffff) return IO_ACCEL_INELIGIBLE; @@ -3530,10 +4462,7 @@ static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, u32 len; u32 total_len = 0; - if (scsi_sg_count(cmd) > h->ioaccel_maxsg) { - atomic_dec(&phys_disk->ioaccel_cmds_out); - return IO_ACCEL_INELIGIBLE; - } + BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); if (fixup_ioaccel_cdb(cdb, &cdb_len)) { atomic_dec(&phys_disk->ioaccel_cmds_out); @@ -3556,8 +4485,19 @@ static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, } if (use_sg) { - BUG_ON(use_sg > IOACCEL2_MAXSGENTRIES); curr_sg = cp->sg; + if (use_sg > h->ioaccel_maxsg) { + addr64 = le64_to_cpu( + h->ioaccel2_cmd_sg_list[c->cmdindex]->address); + curr_sg->address = cpu_to_le64(addr64); + curr_sg->length = 0; + curr_sg->reserved[0] = 0; + curr_sg->reserved[1] = 0; + curr_sg->reserved[2] = 0; + curr_sg->chain_indicator = 0x80; + + curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex]; + } scsi_for_each_sg(cmd, sg, use_sg, i) { addr64 = (u64) sg_dma_address(sg); len = sg_dma_len(sg); @@ -3602,14 +4542,23 @@ static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT); memcpy(cp->cdb, cdb, sizeof(cp->cdb)); - /* fill in sg elements */ - cp->sg_count = (u8) use_sg; - cp->data_len = cpu_to_le32(total_len); cp->err_ptr = cpu_to_le64(c->busaddr + offsetof(struct io_accel2_cmd, error_data)); cp->err_len = cpu_to_le32(sizeof(cp->error_data)); + /* fill in sg elements */ + if (use_sg > h->ioaccel_maxsg) { + cp->sg_count = 1; + cp->sg[0].length = cpu_to_le32(use_sg * sizeof(cp->sg[0])); + if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) { + atomic_dec(&phys_disk->ioaccel_cmds_out); + scsi_dma_unmap(cmd); + return -1; + } + } else + cp->sg_count = (u8) use_sg; + enqueue_cmd_and_start_io(h, c); return 0; } @@ -3706,9 +4655,7 @@ static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h, case WRITE_6: is_write = 1; case READ_6: - first_block = - (((u64) cmd->cmnd[2]) << 8) | - cmd->cmnd[3]; + first_block = get_unaligned_be16(&cmd->cmnd[2]); block_cnt = cmd->cmnd[4]; if (block_cnt == 0) block_cnt = 256; @@ -3992,7 +4939,11 @@ static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h, dev->phys_disk[map_index]); } -/* Submit commands down the "normal" RAID stack path */ +/* + * Submit commands down the "normal" RAID stack path + * All callers to hpsa_ciss_submit must check lockup_detected + * beforehand, before (opt.) and after calling cmd_alloc + */ static int hpsa_ciss_submit(struct ctlr_info *h, struct CommandList *c, struct scsi_cmnd *cmd, unsigned char scsi3addr[]) @@ -4007,7 +4958,6 @@ static int hpsa_ciss_submit(struct ctlr_info *h, /* Fill in the request block... */ c->Request.Timeout = 0; - memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); c->Request.CDBLen = cmd->cmd_len; memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); @@ -4050,7 +5000,7 @@ static int hpsa_ciss_submit(struct ctlr_info *h, } if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */ - cmd_free(h, c); + hpsa_cmd_resolve_and_free(h, c); return SCSI_MLQUEUE_HOST_BUSY; } enqueue_cmd_and_start_io(h, c); @@ -4058,25 +5008,125 @@ static int hpsa_ciss_submit(struct ctlr_info *h, return 0; } +static void hpsa_cmd_init(struct ctlr_info *h, int index, + struct CommandList *c) +{ + dma_addr_t cmd_dma_handle, err_dma_handle; + + /* Zero out all of commandlist except the last field, refcount */ + memset(c, 0, offsetof(struct CommandList, refcount)); + c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT)); + cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); + c->err_info = h->errinfo_pool + index; + memset(c->err_info, 0, sizeof(*c->err_info)); + err_dma_handle = h->errinfo_pool_dhandle + + index * sizeof(*c->err_info); + c->cmdindex = index; + c->busaddr = (u32) cmd_dma_handle; + c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); + c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); + c->h = h; + c->scsi_cmd = SCSI_CMD_IDLE; +} + +static void hpsa_preinitialize_commands(struct ctlr_info *h) +{ + int i; + + for (i = 0; i < h->nr_cmds; i++) { + struct CommandList *c = h->cmd_pool + i; + + hpsa_cmd_init(h, i, c); + atomic_set(&c->refcount, 0); + } +} + +static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index, + struct CommandList *c) +{ + dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c); + + BUG_ON(c->cmdindex != index); + + memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); + memset(c->err_info, 0, sizeof(*c->err_info)); + c->busaddr = (u32) cmd_dma_handle; +} + +static int hpsa_ioaccel_submit(struct ctlr_info *h, + struct CommandList *c, struct scsi_cmnd *cmd, + unsigned char *scsi3addr) +{ + struct hpsa_scsi_dev_t *dev = cmd->device->hostdata; + int rc = IO_ACCEL_INELIGIBLE; + + cmd->host_scribble = (unsigned char *) c; + + if (dev->offload_enabled) { + hpsa_cmd_init(h, c->cmdindex, c); + c->cmd_type = CMD_SCSI; + c->scsi_cmd = cmd; + rc = hpsa_scsi_ioaccel_raid_map(h, c); + if (rc < 0) /* scsi_dma_map failed. */ + rc = SCSI_MLQUEUE_HOST_BUSY; + } else if (dev->hba_ioaccel_enabled) { + hpsa_cmd_init(h, c->cmdindex, c); + c->cmd_type = CMD_SCSI; + c->scsi_cmd = cmd; + rc = hpsa_scsi_ioaccel_direct_map(h, c); + if (rc < 0) /* scsi_dma_map failed. */ + rc = SCSI_MLQUEUE_HOST_BUSY; + } + return rc; +} + static void hpsa_command_resubmit_worker(struct work_struct *work) { struct scsi_cmnd *cmd; struct hpsa_scsi_dev_t *dev; - struct CommandList *c = - container_of(work, struct CommandList, work); + struct CommandList *c = container_of(work, struct CommandList, work); cmd = c->scsi_cmd; dev = cmd->device->hostdata; if (!dev) { cmd->result = DID_NO_CONNECT << 16; - cmd->scsi_done(cmd); - return; + return hpsa_cmd_free_and_done(c->h, c, cmd); } + if (c->reset_pending) + return hpsa_cmd_resolve_and_free(c->h, c); + if (c->abort_pending) + return hpsa_cmd_abort_and_free(c->h, c, cmd); + if (c->cmd_type == CMD_IOACCEL2) { + struct ctlr_info *h = c->h; + struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; + int rc; + + if (c2->error_data.serv_response == + IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) { + rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr); + if (rc == 0) + return; + if (rc == SCSI_MLQUEUE_HOST_BUSY) { + /* + * If we get here, it means dma mapping failed. + * Try again via scsi mid layer, which will + * then get SCSI_MLQUEUE_HOST_BUSY. + */ + cmd->result = DID_IMM_RETRY << 16; + return hpsa_cmd_free_and_done(h, c, cmd); + } + /* else, fall thru and resubmit down CISS path */ + } + } + hpsa_cmd_partial_init(c->h, c->cmdindex, c); if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) { /* * If we get here, it means dma mapping failed. Try * again via scsi mid layer, which will then get * SCSI_MLQUEUE_HOST_BUSY. + * + * hpsa_ciss_submit will have already freed c + * if it encountered a dma mapping failure. */ cmd->result = DID_IMM_RETRY << 16; cmd->scsi_done(cmd); @@ -4094,30 +5144,24 @@ static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd) /* Get the ptr to our adapter structure out of cmd->host. */ h = sdev_to_hba(cmd->device); + + BUG_ON(cmd->request->tag < 0); + dev = cmd->device->hostdata; if (!dev) { cmd->result = DID_NO_CONNECT << 16; cmd->scsi_done(cmd); return 0; } + memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr)); if (unlikely(lockup_detected(h))) { - cmd->result = DID_ERROR << 16; - cmd->scsi_done(cmd); - return 0; - } - c = cmd_alloc(h); - if (c == NULL) { /* trouble... */ - dev_err(&h->pdev->dev, "cmd_alloc returned NULL!\n"); - return SCSI_MLQUEUE_HOST_BUSY; - } - if (unlikely(lockup_detected(h))) { - cmd->result = DID_ERROR << 16; - cmd_free(h, c); + cmd->result = DID_NO_CONNECT << 16; cmd->scsi_done(cmd); return 0; } + c = cmd_tagged_alloc(h, cmd); /* * Call alternate submit routine for I/O accelerated commands. @@ -4126,27 +5170,12 @@ static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd) if (likely(cmd->retries == 0 && cmd->request->cmd_type == REQ_TYPE_FS && h->acciopath_status)) { - - cmd->host_scribble = (unsigned char *) c; - c->cmd_type = CMD_SCSI; - c->scsi_cmd = cmd; - - if (dev->offload_enabled) { - rc = hpsa_scsi_ioaccel_raid_map(h, c); - if (rc == 0) - return 0; /* Sent on ioaccel path */ - if (rc < 0) { /* scsi_dma_map failed. */ - cmd_free(h, c); - return SCSI_MLQUEUE_HOST_BUSY; - } - } else if (dev->ioaccel_handle) { - rc = hpsa_scsi_ioaccel_direct_map(h, c); - if (rc == 0) - return 0; /* Sent on direct map path */ - if (rc < 0) { /* scsi_dma_map failed. */ - cmd_free(h, c); - return SCSI_MLQUEUE_HOST_BUSY; - } + rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr); + if (rc == 0) + return 0; + if (rc == SCSI_MLQUEUE_HOST_BUSY) { + hpsa_cmd_resolve_and_free(h, c); + return SCSI_MLQUEUE_HOST_BUSY; } } return hpsa_ciss_submit(h, c, cmd, scsi3addr); @@ -4195,7 +5224,7 @@ static void hpsa_scan_start(struct Scsi_Host *sh) if (unlikely(lockup_detected(h))) return hpsa_scan_complete(h); - hpsa_update_scsi_devices(h, h->scsi_host->host_no); + hpsa_update_scsi_devices(h); hpsa_scan_complete(h); } @@ -4228,22 +5257,15 @@ static int hpsa_scan_finished(struct Scsi_Host *sh, return finished; } -static void hpsa_unregister_scsi(struct ctlr_info *h) -{ - /* we are being forcibly unloaded, and may not refuse. */ - scsi_remove_host(h->scsi_host); - scsi_host_put(h->scsi_host); - h->scsi_host = NULL; -} - -static int hpsa_register_scsi(struct ctlr_info *h) +static int hpsa_scsi_host_alloc(struct ctlr_info *h) { struct Scsi_Host *sh; - int error; sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h)); - if (sh == NULL) - goto fail; + if (sh == NULL) { + dev_err(&h->pdev->dev, "scsi_host_alloc failed\n"); + return -ENOMEM; + } sh->io_port = 0; sh->n_io_port = 0; @@ -4252,80 +5274,150 @@ static int hpsa_register_scsi(struct ctlr_info *h) sh->max_cmd_len = MAX_COMMAND_SIZE; sh->max_lun = HPSA_MAX_LUN; sh->max_id = HPSA_MAX_LUN; - sh->can_queue = h->nr_cmds - - HPSA_CMDS_RESERVED_FOR_ABORTS - - HPSA_CMDS_RESERVED_FOR_DRIVER - - HPSA_MAX_CONCURRENT_PASSTHRUS; + sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS; sh->cmd_per_lun = sh->can_queue; sh->sg_tablesize = h->maxsgentries; - h->scsi_host = sh; + sh->transportt = hpsa_sas_transport_template; sh->hostdata[0] = (unsigned long) h; sh->irq = h->intr[h->intr_mode]; sh->unique_id = sh->irq; - error = scsi_add_host(sh, &h->pdev->dev); - if (error) - goto fail_host_put; - scsi_scan_host(sh); + + h->scsi_host = sh; return 0; +} - fail_host_put: - dev_err(&h->pdev->dev, "%s: scsi_add_host" - " failed for controller %d\n", __func__, h->ctlr); - scsi_host_put(sh); - return error; - fail: - dev_err(&h->pdev->dev, "%s: scsi_host_alloc" - " failed for controller %d\n", __func__, h->ctlr); - return -ENOMEM; +static int hpsa_scsi_add_host(struct ctlr_info *h) +{ + int rv; + + rv = scsi_add_host(h->scsi_host, &h->pdev->dev); + if (rv) { + dev_err(&h->pdev->dev, "scsi_add_host failed\n"); + return rv; + } + scsi_scan_host(h->scsi_host); + return 0; } -static int wait_for_device_to_become_ready(struct ctlr_info *h, - unsigned char lunaddr[]) +/* + * The block layer has already gone to the trouble of picking out a unique, + * small-integer tag for this request. We use an offset from that value as + * an index to select our command block. (The offset allows us to reserve the + * low-numbered entries for our own uses.) + */ +static int hpsa_get_cmd_index(struct scsi_cmnd *scmd) +{ + int idx = scmd->request->tag; + + if (idx < 0) + return idx; + + /* Offset to leave space for internal cmds. */ + return idx += HPSA_NRESERVED_CMDS; +} + +/* + * Send a TEST_UNIT_READY command to the specified LUN using the specified + * reply queue; returns zero if the unit is ready, and non-zero otherwise. + */ +static int hpsa_send_test_unit_ready(struct ctlr_info *h, + struct CommandList *c, unsigned char lunaddr[], + int reply_queue) +{ + int rc; + + /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */ + (void) fill_cmd(c, TEST_UNIT_READY, h, + NULL, 0, 0, lunaddr, TYPE_CMD); + rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); + if (rc) + return rc; + /* no unmap needed here because no data xfer. */ + + /* Check if the unit is already ready. */ + if (c->err_info->CommandStatus == CMD_SUCCESS) + return 0; + + /* + * The first command sent after reset will receive "unit attention" to + * indicate that the LUN has been reset...this is actually what we're + * looking for (but, success is good too). + */ + if (c->err_info->CommandStatus == CMD_TARGET_STATUS && + c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && + (c->err_info->SenseInfo[2] == NO_SENSE || + c->err_info->SenseInfo[2] == UNIT_ATTENTION)) + return 0; + + return 1; +} + +/* + * Wait for a TEST_UNIT_READY command to complete, retrying as necessary; + * returns zero when the unit is ready, and non-zero when giving up. + */ +static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h, + struct CommandList *c, + unsigned char lunaddr[], int reply_queue) { int rc; int count = 0; int waittime = 1; /* seconds */ - struct CommandList *c; - - c = cmd_alloc(h); - if (!c) { - dev_warn(&h->pdev->dev, "out of memory in " - "wait_for_device_to_become_ready.\n"); - return IO_ERROR; - } /* Send test unit ready until device ready, or give up. */ - while (count < HPSA_TUR_RETRY_LIMIT) { + for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) { - /* Wait for a bit. do this first, because if we send + /* + * Wait for a bit. do this first, because if we send * the TUR right away, the reset will just abort it. */ msleep(1000 * waittime); - count++; - rc = 0; /* Device ready. */ + + rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue); + if (!rc) + break; /* Increase wait time with each try, up to a point. */ if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) - waittime = waittime * 2; + waittime *= 2; + + dev_warn(&h->pdev->dev, + "waiting %d secs for device to become ready.\n", + waittime); + } - /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */ - (void) fill_cmd(c, TEST_UNIT_READY, h, - NULL, 0, 0, lunaddr, TYPE_CMD); - hpsa_scsi_do_simple_cmd_core(h, c); - /* no unmap needed here because no data xfer. */ + return rc; +} - if (c->err_info->CommandStatus == CMD_SUCCESS) - break; +static int wait_for_device_to_become_ready(struct ctlr_info *h, + unsigned char lunaddr[], + int reply_queue) +{ + int first_queue; + int last_queue; + int rq; + int rc = 0; + struct CommandList *c; - if (c->err_info->CommandStatus == CMD_TARGET_STATUS && - c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && - (c->err_info->SenseInfo[2] == NO_SENSE || - c->err_info->SenseInfo[2] == UNIT_ATTENTION)) - break; + c = cmd_alloc(h); - dev_warn(&h->pdev->dev, "waiting %d secs " - "for device to become ready.\n", waittime); - rc = 1; /* device not ready. */ + /* + * If no specific reply queue was requested, then send the TUR + * repeatedly, requesting a reply on each reply queue; otherwise execute + * the loop exactly once using only the specified queue. + */ + if (reply_queue == DEFAULT_REPLY_QUEUE) { + first_queue = 0; + last_queue = h->nreply_queues - 1; + } else { + first_queue = reply_queue; + last_queue = reply_queue; + } + + for (rq = first_queue; rq <= last_queue; rq++) { + rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq); + if (rc) + break; } if (rc) @@ -4345,6 +5437,8 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) int rc; struct ctlr_info *h; struct hpsa_scsi_dev_t *dev; + u8 reset_type; + char msg[48]; /* find the controller to which the command to be aborted was sent */ h = sdev_to_hba(scsicmd->device); @@ -4356,19 +5450,52 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) dev = scsicmd->device->hostdata; if (!dev) { - dev_err(&h->pdev->dev, "hpsa_eh_device_reset_handler: " - "device lookup failed.\n"); + dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__); return FAILED; } - dev_warn(&h->pdev->dev, "resetting device %d:%d:%d:%d\n", - h->scsi_host->host_no, dev->bus, dev->target, dev->lun); - /* send a reset to the SCSI LUN which the command was sent to */ - rc = hpsa_send_reset(h, dev->scsi3addr, HPSA_RESET_TYPE_LUN); - if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) + + /* if controller locked up, we can guarantee command won't complete */ + if (lockup_detected(h)) { + snprintf(msg, sizeof(msg), + "cmd %d RESET FAILED, lockup detected", + hpsa_get_cmd_index(scsicmd)); + hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); + return FAILED; + } + + /* this reset request might be the result of a lockup; check */ + if (detect_controller_lockup(h)) { + snprintf(msg, sizeof(msg), + "cmd %d RESET FAILED, new lockup detected", + hpsa_get_cmd_index(scsicmd)); + hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); + return FAILED; + } + + /* Do not attempt on controller */ + if (is_hba_lunid(dev->scsi3addr)) return SUCCESS; - dev_warn(&h->pdev->dev, "resetting device failed.\n"); - return FAILED; + if (is_logical_dev_addr_mode(dev->scsi3addr)) + reset_type = HPSA_DEVICE_RESET_MSG; + else + reset_type = HPSA_PHYS_TARGET_RESET; + + sprintf(msg, "resetting %s", + reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical "); + hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); + + h->reset_in_progress = 1; + + /* send a reset to the SCSI LUN which the command was sent to */ + rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type, + DEFAULT_REPLY_QUEUE); + sprintf(msg, "reset %s %s", + reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ", + rc == 0 ? "completed successfully" : "failed"); + hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); + h->reset_in_progress = 0; + return rc == 0 ? SUCCESS : FAILED; } static void swizzle_abort_tag(u8 *tag) @@ -4412,7 +5539,7 @@ static void hpsa_get_tag(struct ctlr_info *h, } static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, - struct CommandList *abort, int swizzle) + struct CommandList *abort, int reply_queue) { int rc = IO_OK; struct CommandList *c; @@ -4420,19 +5547,15 @@ static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, __le32 tagupper, taglower; c = cmd_alloc(h); - if (c == NULL) { /* trouble... */ - dev_warn(&h->pdev->dev, "cmd_alloc returned NULL!\n"); - return -ENOMEM; - } /* fill_cmd can't fail here, no buffer to map */ - (void) fill_cmd(c, HPSA_ABORT_MSG, h, abort, + (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag, 0, 0, scsi3addr, TYPE_MSG); - if (swizzle) + if (h->needs_abort_tags_swizzled) swizzle_abort_tag(&c->Request.CDB[4]); - hpsa_scsi_do_simple_cmd_core(h, c); + (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); hpsa_get_tag(h, abort, &taglower, &tagupper); - dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd_core completed.\n", + dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n", __func__, tagupper, taglower); /* no unmap needed here because no data xfer. */ @@ -4440,6 +5563,9 @@ static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, switch (ei->CommandStatus) { case CMD_SUCCESS: break; + case CMD_TMF_STATUS: + rc = hpsa_evaluate_tmf_status(h, c); + break; case CMD_UNABORTABLE: /* Very common, don't make noise. */ rc = -1; break; @@ -4456,6 +5582,48 @@ static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, return rc; } +static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h, + struct CommandList *command_to_abort, int reply_queue) +{ + struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; + struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2; + struct io_accel2_cmd *c2a = + &h->ioaccel2_cmd_pool[command_to_abort->cmdindex]; + struct scsi_cmnd *scmd = command_to_abort->scsi_cmd; + struct hpsa_scsi_dev_t *dev = scmd->device->hostdata; + + /* + * We're overlaying struct hpsa_tmf_struct on top of something which + * was allocated as a struct io_accel2_cmd, so we better be sure it + * actually fits, and doesn't overrun the error info space. + */ + BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) > + sizeof(struct io_accel2_cmd)); + BUG_ON(offsetof(struct io_accel2_cmd, error_data) < + offsetof(struct hpsa_tmf_struct, error_len) + + sizeof(ac->error_len)); + + c->cmd_type = IOACCEL2_TMF; + c->scsi_cmd = SCSI_CMD_BUSY; + + /* Adjust the DMA address to point to the accelerated command buffer */ + c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle + + (c->cmdindex * sizeof(struct io_accel2_cmd)); + BUG_ON(c->busaddr & 0x0000007F); + + memset(ac, 0, sizeof(*c2)); /* yes this is correct */ + ac->iu_type = IOACCEL2_IU_TMF_TYPE; + ac->reply_queue = reply_queue; + ac->tmf = IOACCEL2_TMF_ABORT; + ac->it_nexus = cpu_to_le32(dev->ioaccel_handle); + memset(ac->lun_id, 0, sizeof(ac->lun_id)); + ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT); + ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag)); + ac->error_ptr = cpu_to_le64(c->busaddr + + offsetof(struct io_accel2_cmd, error_data)); + ac->error_len = cpu_to_le32(sizeof(c2->error_data)); +} + /* ioaccel2 path firmware cannot handle abort task requests. * Change abort requests to physical target reset, and send to the * address of the physical disk used for the ioaccel 2 command. @@ -4464,7 +5632,7 @@ static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, */ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, - unsigned char *scsi3addr, struct CommandList *abort) + unsigned char *scsi3addr, struct CommandList *abort, int reply_queue) { int rc = IO_OK; struct scsi_cmnd *scmd; /* scsi command within request being aborted */ @@ -4483,8 +5651,9 @@ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, if (h->raid_offload_debug > 0) dev_info(&h->pdev->dev, - "Reset as abort: Abort requested on C%d:B%d:T%d:L%d scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", + "scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", h->scsi_host->host_no, dev->bus, dev->target, dev->lun, + "Reset as abort", scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3], scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]); @@ -4506,7 +5675,7 @@ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", psa[0], psa[1], psa[2], psa[3], psa[4], psa[5], psa[6], psa[7]); - rc = hpsa_send_reset(h, psa, HPSA_RESET_TYPE_TARGET); + rc = hpsa_do_reset(h, dev, psa, HPSA_RESET_TYPE_TARGET, reply_queue); if (rc != 0) { dev_warn(&h->pdev->dev, "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", @@ -4516,7 +5685,7 @@ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, } /* wait for device to recover */ - if (wait_for_device_to_become_ready(h, psa) != 0) { + if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) { dev_warn(&h->pdev->dev, "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n", psa[0], psa[1], psa[2], psa[3], @@ -4533,25 +5702,94 @@ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, return rc; /* success */ } -/* Some Smart Arrays need the abort tag swizzled, and some don't. It's hard to - * tell which kind we're dealing with, so we send the abort both ways. There - * shouldn't be any collisions between swizzled and unswizzled tags due to the - * way we construct our tags but we check anyway in case the assumptions which - * make this true someday become false. - */ +static int hpsa_send_abort_ioaccel2(struct ctlr_info *h, + struct CommandList *abort, int reply_queue) +{ + int rc = IO_OK; + struct CommandList *c; + __le32 taglower, tagupper; + struct hpsa_scsi_dev_t *dev; + struct io_accel2_cmd *c2; + + dev = abort->scsi_cmd->device->hostdata; + if (!dev->offload_enabled && !dev->hba_ioaccel_enabled) + return -1; + + c = cmd_alloc(h); + setup_ioaccel2_abort_cmd(c, h, abort, reply_queue); + c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; + (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); + hpsa_get_tag(h, abort, &taglower, &tagupper); + dev_dbg(&h->pdev->dev, + "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n", + __func__, tagupper, taglower); + /* no unmap needed here because no data xfer. */ + + dev_dbg(&h->pdev->dev, + "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n", + __func__, tagupper, taglower, c2->error_data.serv_response); + switch (c2->error_data.serv_response) { + case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE: + case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS: + rc = 0; + break; + case IOACCEL2_SERV_RESPONSE_TMF_REJECTED: + case IOACCEL2_SERV_RESPONSE_FAILURE: + case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN: + rc = -1; + break; + default: + dev_warn(&h->pdev->dev, + "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n", + __func__, tagupper, taglower, + c2->error_data.serv_response); + rc = -1; + } + cmd_free(h, c); + dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__, + tagupper, taglower); + return rc; +} + static int hpsa_send_abort_both_ways(struct ctlr_info *h, - unsigned char *scsi3addr, struct CommandList *abort) + unsigned char *scsi3addr, struct CommandList *abort, int reply_queue) { - /* ioccelerator mode 2 commands should be aborted via the + /* + * ioccelerator mode 2 commands should be aborted via the * accelerated path, since RAID path is unaware of these commands, - * but underlying firmware can't handle abort TMF. - * Change abort to physical device reset. + * but not all underlying firmware can handle abort TMF. + * Change abort to physical device reset when abort TMF is unsupported. */ - if (abort->cmd_type == CMD_IOACCEL2) - return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr, abort); + if (abort->cmd_type == CMD_IOACCEL2) { + if (HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags) + return hpsa_send_abort_ioaccel2(h, abort, + reply_queue); + else + return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr, + abort, reply_queue); + } + return hpsa_send_abort(h, scsi3addr, abort, reply_queue); +} - return hpsa_send_abort(h, scsi3addr, abort, 0) && - hpsa_send_abort(h, scsi3addr, abort, 1); +/* Find out which reply queue a command was meant to return on */ +static int hpsa_extract_reply_queue(struct ctlr_info *h, + struct CommandList *c) +{ + if (c->cmd_type == CMD_IOACCEL2) + return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue; + return c->Header.ReplyQueue; +} + +/* + * Limit concurrency of abort commands to prevent + * over-subscription of commands + */ +static inline int wait_for_available_abort_cmd(struct ctlr_info *h) +{ +#define ABORT_CMD_WAIT_MSECS 5000 + return !wait_event_timeout(h->abort_cmd_wait_queue, + atomic_dec_if_positive(&h->abort_cmds_available) >= 0, + msecs_to_jiffies(ABORT_CMD_WAIT_MSECS)); } /* Send an abort for the specified command. @@ -4561,7 +5799,7 @@ static int hpsa_send_abort_both_ways(struct ctlr_info *h, static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) { - int i, rc; + int rc; struct ctlr_info *h; struct hpsa_scsi_dev_t *dev; struct CommandList *abort; /* pointer to command to be aborted */ @@ -4569,27 +5807,19 @@ static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) char msg[256]; /* For debug messaging. */ int ml = 0; __le32 tagupper, taglower; - int refcount; + int refcount, reply_queue; - /* Find the controller of the command to be aborted */ - h = sdev_to_hba(sc->device); - if (WARN(h == NULL, - "ABORT REQUEST FAILED, Controller lookup failed.\n")) + if (sc == NULL) return FAILED; - if (lockup_detected(h)) + if (sc->device == NULL) return FAILED; - /* Check that controller supports some kind of task abort */ - if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) && - !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) + /* Find the controller of the command to be aborted */ + h = sdev_to_hba(sc->device); + if (h == NULL) return FAILED; - memset(msg, 0, sizeof(msg)); - ml += sprintf(msg+ml, "ABORT REQUEST on C%d:B%d:T%d:L%llu ", - h->scsi_host->host_no, sc->device->channel, - sc->device->id, sc->device->lun); - /* Find the device of the command to be aborted */ dev = sc->device->hostdata; if (!dev) { @@ -4598,6 +5828,31 @@ static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) return FAILED; } + /* If controller locked up, we can guarantee command won't complete */ + if (lockup_detected(h)) { + hpsa_show_dev_msg(KERN_WARNING, h, dev, + "ABORT FAILED, lockup detected"); + return FAILED; + } + + /* This is a good time to check if controller lockup has occurred */ + if (detect_controller_lockup(h)) { + hpsa_show_dev_msg(KERN_WARNING, h, dev, + "ABORT FAILED, new lockup detected"); + return FAILED; + } + + /* Check that controller supports some kind of task abort */ + if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) && + !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) + return FAILED; + + memset(msg, 0, sizeof(msg)); + ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p", + h->scsi_host->host_no, sc->device->channel, + sc->device->id, sc->device->lun, + "Aborting command", sc); + /* Get SCSI command to be aborted */ abort = (struct CommandList *) sc->host_scribble; if (abort == NULL) { @@ -4609,50 +5864,115 @@ static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) cmd_free(h, abort); return SUCCESS; } + + /* Don't bother trying the abort if we know it won't work. */ + if (abort->cmd_type != CMD_IOACCEL2 && + abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) { + cmd_free(h, abort); + return FAILED; + } + + /* + * Check that we're aborting the right command. + * It's possible the CommandList already completed and got re-used. + */ + if (abort->scsi_cmd != sc) { + cmd_free(h, abort); + return SUCCESS; + } + + abort->abort_pending = true; hpsa_get_tag(h, abort, &taglower, &tagupper); + reply_queue = hpsa_extract_reply_queue(h, abort); ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower); as = abort->scsi_cmd; if (as != NULL) - ml += sprintf(msg+ml, "Command:0x%x SN:0x%lx ", - as->cmnd[0], as->serial_number); - dev_dbg(&h->pdev->dev, "%s\n", msg); - dev_warn(&h->pdev->dev, "Abort request on C%d:B%d:T%d:L%d\n", - h->scsi_host->host_no, dev->bus, dev->target, dev->lun); + ml += sprintf(msg+ml, + "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ", + as->cmd_len, as->cmnd[0], as->cmnd[1], + as->serial_number); + dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg); + hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command"); + /* * Command is in flight, or possibly already completed * by the firmware (but not to the scsi mid layer) but we can't * distinguish which. Send the abort down. */ - rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort); + if (wait_for_available_abort_cmd(h)) { + dev_warn(&h->pdev->dev, + "%s FAILED, timeout waiting for an abort command to become available.\n", + msg); + cmd_free(h, abort); + return FAILED; + } + rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort, reply_queue); + atomic_inc(&h->abort_cmds_available); + wake_up_all(&h->abort_cmd_wait_queue); if (rc != 0) { - dev_dbg(&h->pdev->dev, "%s Request FAILED.\n", msg); - dev_warn(&h->pdev->dev, "FAILED abort on device C%d:B%d:T%d:L%d\n", - h->scsi_host->host_no, - dev->bus, dev->target, dev->lun); + dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg); + hpsa_show_dev_msg(KERN_WARNING, h, dev, + "FAILED to abort command"); cmd_free(h, abort); return FAILED; } - dev_info(&h->pdev->dev, "%s REQUEST SUCCEEDED.\n", msg); + dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg); + wait_event(h->event_sync_wait_queue, + abort->scsi_cmd != sc || lockup_detected(h)); + cmd_free(h, abort); + return !lockup_detected(h) ? SUCCESS : FAILED; +} - /* If the abort(s) above completed and actually aborted the - * command, then the command to be aborted should already be - * completed. If not, wait around a bit more to see if they - * manage to complete normally. - */ -#define ABORT_COMPLETE_WAIT_SECS 30 - for (i = 0; i < ABORT_COMPLETE_WAIT_SECS * 10; i++) { - refcount = atomic_read(&abort->refcount); - if (refcount < 2) { - cmd_free(h, abort); - return SUCCESS; - } else { - msleep(100); - } +/* + * For operations with an associated SCSI command, a command block is allocated + * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the + * block request tag as an index into a table of entries. cmd_tagged_free() is + * the complement, although cmd_free() may be called instead. + */ +static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h, + struct scsi_cmnd *scmd) +{ + int idx = hpsa_get_cmd_index(scmd); + struct CommandList *c = h->cmd_pool + idx; + + if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) { + dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n", + idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1); + /* The index value comes from the block layer, so if it's out of + * bounds, it's probably not our bug. + */ + BUG(); } - dev_warn(&h->pdev->dev, "%s FAILED. Aborted command has not completed after %d seconds.\n", - msg, ABORT_COMPLETE_WAIT_SECS); - cmd_free(h, abort); - return FAILED; + + atomic_inc(&c->refcount); + if (unlikely(!hpsa_is_cmd_idle(c))) { + /* + * We expect that the SCSI layer will hand us a unique tag + * value. Thus, there should never be a collision here between + * two requests...because if the selected command isn't idle + * then someone is going to be very disappointed. + */ + dev_err(&h->pdev->dev, + "tag collision (tag=%d) in cmd_tagged_alloc().\n", + idx); + if (c->scsi_cmd != NULL) + scsi_print_command(c->scsi_cmd); + scsi_print_command(scmd); + } + + hpsa_cmd_partial_init(h, idx, c); + return c; +} + +static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) +{ + /* + * Release our reference to the block. We don't need to do anything + * else to free it, because it is accessed by index. (There's no point + * in checking the result of the decrement, since we cannot guarantee + * that there isn't a concurrent abort which is also accessing it.) + */ + (void)atomic_dec(&c->refcount); } /* @@ -4660,16 +5980,15 @@ static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track * which ones are free or in use. Lock must be held when calling this. * cmd_free() is the complement. + * This function never gives up and returns NULL. If it hangs, + * another thread must call cmd_free() to free some tags. */ static struct CommandList *cmd_alloc(struct ctlr_info *h) { struct CommandList *c; - int i; - union u64bit temp64; - dma_addr_t cmd_dma_handle, err_dma_handle; - int refcount; - unsigned long offset; + int refcount, i; + int offset = 0; /* * There is some *extremely* small but non-zero chance that that @@ -4681,12 +6000,20 @@ static struct CommandList *cmd_alloc(struct ctlr_info *h) * very unlucky thread might be starved anyway, never able to * beat the other threads. In reality, this happens so * infrequently as to be indistinguishable from never. + * + * Note that we start allocating commands before the SCSI host structure + * is initialized. Since the search starts at bit zero, this + * all works, since we have at least one command structure available; + * however, it means that the structures with the low indexes have to be + * reserved for driver-initiated requests, while requests from the block + * layer will use the higher indexes. */ - offset = h->last_allocation; /* benignly racy */ for (;;) { - i = find_next_zero_bit(h->cmd_pool_bits, h->nr_cmds, offset); - if (unlikely(i == h->nr_cmds)) { + i = find_next_zero_bit(h->cmd_pool_bits, + HPSA_NRESERVED_CMDS, + offset); + if (unlikely(i >= HPSA_NRESERVED_CMDS)) { offset = 0; continue; } @@ -4694,35 +6021,23 @@ static struct CommandList *cmd_alloc(struct ctlr_info *h) refcount = atomic_inc_return(&c->refcount); if (unlikely(refcount > 1)) { cmd_free(h, c); /* already in use */ - offset = (i + 1) % h->nr_cmds; + offset = (i + 1) % HPSA_NRESERVED_CMDS; continue; } set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits + (i / BITS_PER_LONG)); break; /* it's ours now. */ } - h->last_allocation = i; /* benignly racy */ - - /* Zero out all of commandlist except the last field, refcount */ - memset(c, 0, offsetof(struct CommandList, refcount)); - c->Header.tag = cpu_to_le64((u64) (i << DIRECT_LOOKUP_SHIFT)); - cmd_dma_handle = h->cmd_pool_dhandle + i * sizeof(*c); - c->err_info = h->errinfo_pool + i; - memset(c->err_info, 0, sizeof(*c->err_info)); - err_dma_handle = h->errinfo_pool_dhandle - + i * sizeof(*c->err_info); - - c->cmdindex = i; - - c->busaddr = (u32) cmd_dma_handle; - temp64.val = (u64) err_dma_handle; - c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle); - c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info)); - - c->h = h; + hpsa_cmd_partial_init(h, i, c); return c; } +/* + * This is the complementary operation to cmd_alloc(). Note, however, in some + * corner cases it may also be used to free blocks allocated by + * cmd_tagged_alloc() in which case the ref-count decrement does the trick and + * the clear-bit is harmless. + */ static void cmd_free(struct ctlr_info *h, struct CommandList *c) { if (atomic_dec_and_test(&c->refcount)) { @@ -4900,7 +6215,7 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) if (iocommand.buf_size > 0) { buff = kmalloc(iocommand.buf_size, GFP_KERNEL); if (buff == NULL) - return -EFAULT; + return -ENOMEM; if (iocommand.Request.Type.Direction & XFER_WRITE) { /* Copy the data into the buffer we created */ if (copy_from_user(buff, iocommand.buf, @@ -4913,12 +6228,10 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) } } c = cmd_alloc(h); - if (c == NULL) { - rc = -ENOMEM; - goto out_kfree; - } + /* Fill in the command type */ c->cmd_type = CMD_IOCTL_PEND; + c->scsi_cmd = SCSI_CMD_BUSY; /* Fill in Command Header */ c->Header.ReplyQueue = 0; /* unused in simple mode */ if (iocommand.buf_size > 0) { /* buffer to fill */ @@ -4948,10 +6261,14 @@ static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp) c->SG[0].Len = cpu_to_le32(iocommand.buf_size); c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */ } - hpsa_scsi_do_simple_cmd_core_if_no_lockup(h, c); + rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT); if (iocommand.buf_size > 0) hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL); check_ioctl_unit_attention(h, c); + if (rc) { + rc = -EIO; + goto out; + } /* Copy the error information out */ memcpy(&iocommand.error_info, c->err_info, @@ -5048,11 +6365,9 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) sg_used++; } c = cmd_alloc(h); - if (c == NULL) { - status = -ENOMEM; - goto cleanup1; - } + c->cmd_type = CMD_IOCTL_PEND; + c->scsi_cmd = SCSI_CMD_BUSY; c->Header.ReplyQueue = 0; c->Header.SGList = (u8) sg_used; c->Header.SGTotal = cpu_to_le16(sg_used); @@ -5078,10 +6393,15 @@ static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp) } c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST); } - hpsa_scsi_do_simple_cmd_core_if_no_lockup(h, c); + status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT); if (sg_used) hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL); check_ioctl_unit_attention(h, c); + if (status) { + status = -EIO; + goto cleanup0; + } + /* Copy the error information out */ memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info)); if (copy_to_user(argp, ioc, sizeof(*ioc))) { @@ -5163,14 +6483,13 @@ static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg) } } -static int hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr, +static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr, u8 reset_type) { struct CommandList *c; c = cmd_alloc(h); - if (!c) - return -ENOMEM; + /* fill_cmd can't fail here, no data buffer to map */ (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0, RAID_CTLR_LUNID, TYPE_MSG); @@ -5181,7 +6500,7 @@ static int hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr, * the command either. This is the last command we will send before * re-initializing everything, so it doesn't matter and won't leak. */ - return 0; + return; } static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, @@ -5189,9 +6508,10 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, int cmd_type) { int pci_dir = XFER_NONE; - struct CommandList *a; /* for commands to be aborted */ + u64 tag; /* for commands to be aborted */ c->cmd_type = CMD_IOCTL_PEND; + c->scsi_cmd = SCSI_CMD_BUSY; c->Header.ReplyQueue = 0; if (buff != NULL && size > 0) { c->Header.SGList = 1; @@ -5232,6 +6552,24 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, c->Request.CDB[8] = (size >> 8) & 0xFF; c->Request.CDB[9] = size & 0xFF; break; + case BMIC_SENSE_DIAG_OPTIONS: + c->Request.CDBLen = 16; + c->Request.type_attr_dir = + TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); + c->Request.Timeout = 0; + /* Spec says this should be BMIC_WRITE */ + c->Request.CDB[0] = BMIC_READ; + c->Request.CDB[6] = BMIC_SENSE_DIAG_OPTIONS; + break; + case BMIC_SET_DIAG_OPTIONS: + c->Request.CDBLen = 16; + c->Request.type_attr_dir = + TYPE_ATTR_DIR(cmd_type, + ATTR_SIMPLE, XFER_WRITE); + c->Request.Timeout = 0; + c->Request.CDB[0] = BMIC_WRITE; + c->Request.CDB[6] = BMIC_SET_DIAG_OPTIONS; + break; case HPSA_CACHE_FLUSH: c->Request.CDBLen = 12; c->Request.type_attr_dir = @@ -5281,6 +6619,32 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, c->Request.CDB[7] = (size >> 16) & 0xFF; c->Request.CDB[8] = (size >> 8) & 0XFF; break; + case BMIC_SENSE_SUBSYSTEM_INFORMATION: + c->Request.CDBLen = 10; + c->Request.type_attr_dir = + TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); + c->Request.Timeout = 0; + c->Request.CDB[0] = BMIC_READ; + c->Request.CDB[6] = BMIC_SENSE_SUBSYSTEM_INFORMATION; + c->Request.CDB[7] = (size >> 16) & 0xFF; + c->Request.CDB[8] = (size >> 8) & 0XFF; + break; + case BMIC_IDENTIFY_CONTROLLER: + c->Request.CDBLen = 10; + c->Request.type_attr_dir = + TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ); + c->Request.Timeout = 0; + c->Request.CDB[0] = BMIC_READ; + c->Request.CDB[1] = 0; + c->Request.CDB[2] = 0; + c->Request.CDB[3] = 0; + c->Request.CDB[4] = 0; + c->Request.CDB[5] = 0; + c->Request.CDB[6] = BMIC_IDENTIFY_CONTROLLER; + c->Request.CDB[7] = (size >> 16) & 0xFF; + c->Request.CDB[8] = (size >> 8) & 0XFF; + c->Request.CDB[9] = 0; + break; default: dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd); BUG(); @@ -5289,6 +6653,20 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, } else if (cmd_type == TYPE_MSG) { switch (cmd) { + case HPSA_PHYS_TARGET_RESET: + c->Request.CDBLen = 16; + c->Request.type_attr_dir = + TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE); + c->Request.Timeout = 0; /* Don't time out */ + memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); + c->Request.CDB[0] = HPSA_RESET; + c->Request.CDB[1] = HPSA_TARGET_RESET_TYPE; + /* Physical target reset needs no control bytes 4-7*/ + c->Request.CDB[4] = 0x00; + c->Request.CDB[5] = 0x00; + c->Request.CDB[6] = 0x00; + c->Request.CDB[7] = 0x00; + break; case HPSA_DEVICE_RESET_MSG: c->Request.CDBLen = 16; c->Request.type_attr_dir = @@ -5305,10 +6683,10 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, c->Request.CDB[7] = 0x00; break; case HPSA_ABORT_MSG: - a = buff; /* point to command to be aborted */ + memcpy(&tag, buff, sizeof(tag)); dev_dbg(&h->pdev->dev, - "Abort Tag:0x%016llx request Tag:0x%016llx", - a->Header.tag, c->Header.tag); + "Abort Tag:0x%016llx using rqst Tag:0x%016llx", + tag, c->Header.tag); c->Request.CDBLen = 16; c->Request.type_attr_dir = TYPE_ATTR_DIR(cmd_type, @@ -5319,8 +6697,7 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, c->Request.CDB[2] = 0x00; /* reserved */ c->Request.CDB[3] = 0x00; /* reserved */ /* Tag to abort goes in CDB[4]-CDB[11] */ - memcpy(&c->Request.CDB[4], &a->Header.tag, - sizeof(a->Header.tag)); + memcpy(&c->Request.CDB[4], &tag, sizeof(tag)); c->Request.CDB[12] = 0x00; /* reserved */ c->Request.CDB[13] = 0x00; /* reserved */ c->Request.CDB[14] = 0x00; /* reserved */ @@ -5399,20 +6776,10 @@ static inline void finish_cmd(struct CommandList *c) if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI || c->cmd_type == CMD_IOACCEL2)) complete_scsi_command(c); - else if (c->cmd_type == CMD_IOCTL_PEND) + else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF) complete(c->waiting); } - -static inline u32 hpsa_tag_discard_error_bits(struct ctlr_info *h, u32 tag) -{ -#define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1) -#define HPSA_SIMPLE_ERROR_BITS 0x03 - if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant))) - return tag & ~HPSA_SIMPLE_ERROR_BITS; - return tag & ~HPSA_PERF_ERROR_BITS; -} - /* process completion of an indexed ("direct lookup") command */ static inline void process_indexed_cmd(struct ctlr_info *h, u32 raw_tag) @@ -5733,7 +7100,7 @@ static int controller_reset_failed(struct CfgTable __iomem *cfgtable) /* This does a hard reset of the controller using PCI power management * states or the using the doorbell register. */ -static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev) +static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id) { u64 cfg_offset; u32 cfg_base_addr; @@ -5744,7 +7111,6 @@ static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev) int rc; struct CfgTable __iomem *cfgtable; u32 use_doorbell; - u32 board_id; u16 command_register; /* For controllers as old as the P600, this is very nearly @@ -5760,11 +7126,6 @@ static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev) * using the doorbell register. */ - rc = hpsa_lookup_board_id(pdev, &board_id); - if (rc < 0) { - dev_warn(&pdev->dev, "Board ID not found\n"); - return rc; - } if (!ctlr_is_resettable(board_id)) { dev_warn(&pdev->dev, "Controller not resettable\n"); return -ENODEV; @@ -5930,10 +7291,22 @@ static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr) return -1; } +static void hpsa_disable_interrupt_mode(struct ctlr_info *h) +{ + if (h->msix_vector) { + if (h->pdev->msix_enabled) + pci_disable_msix(h->pdev); + h->msix_vector = 0; + } else if (h->msi_vector) { + if (h->pdev->msi_enabled) + pci_disable_msi(h->pdev); + h->msi_vector = 0; + } +} + /* If MSI/MSI-X is supported by the kernel we will try to enable it on * controllers that are capable. If not, we use legacy INTx mode. */ - static void hpsa_interrupt_mode(struct ctlr_info *h) { #ifdef CONFIG_PCI_MSI @@ -6064,6 +7437,21 @@ static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr, return 0; } +static void hpsa_free_cfgtables(struct ctlr_info *h) +{ + if (h->transtable) { + iounmap(h->transtable); + h->transtable = NULL; + } + if (h->cfgtable) { + iounmap(h->cfgtable); + h->cfgtable = NULL; + } +} + +/* Find and map CISS config table and transfer table ++ * several items must be unmapped (freed) later ++ * */ static int hpsa_find_cfgtables(struct ctlr_info *h) { u64 cfg_offset; @@ -6090,25 +7478,31 @@ static int hpsa_find_cfgtables(struct ctlr_info *h) h->transtable = remap_pci_mem(pci_resource_start(h->pdev, cfg_base_addr_index)+cfg_offset+trans_offset, sizeof(*h->transtable)); - if (!h->transtable) + if (!h->transtable) { + dev_err(&h->pdev->dev, "Failed mapping transfer table\n"); + hpsa_free_cfgtables(h); return -ENOMEM; + } return 0; } static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h) { - h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands)); +#define MIN_MAX_COMMANDS 16 + BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS); + + h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands); /* Limit commands in memory limited kdump scenario. */ if (reset_devices && h->max_commands > 32) h->max_commands = 32; - if (h->max_commands < 16) { - dev_warn(&h->pdev->dev, "Controller reports " - "max supported commands of %d, an obvious lie. " - "Using 16. Ensure that firmware is up to date.\n", - h->max_commands); - h->max_commands = 16; + if (h->max_commands < MIN_MAX_COMMANDS) { + dev_warn(&h->pdev->dev, + "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n", + h->max_commands, + MIN_MAX_COMMANDS); + h->max_commands = MIN_MAX_COMMANDS; } } @@ -6153,6 +7547,8 @@ static void hpsa_find_board_params(struct ctlr_info *h) dev_warn(&h->pdev->dev, "Physical aborts not supported\n"); if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) dev_warn(&h->pdev->dev, "Logical aborts not supported\n"); + if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)) + dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n"); } static inline bool hpsa_CISS_signature_present(struct ctlr_info *h) @@ -6222,6 +7618,8 @@ static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h) * as we enter this code.) */ for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) { + if (h->remove_in_progress) + goto done; spin_lock_irqsave(&h->lock, flags); doorbell_value = readl(h->vaddr + SA5_DOORBELL); spin_unlock_irqrestore(&h->lock, flags); @@ -6262,6 +7660,22 @@ error: return -ENODEV; } +/* free items allocated or mapped by hpsa_pci_init */ +static void hpsa_free_pci_init(struct ctlr_info *h) +{ + hpsa_free_cfgtables(h); /* pci_init 4 */ + iounmap(h->vaddr); /* pci_init 3 */ + h->vaddr = NULL; + hpsa_disable_interrupt_mode(h); /* pci_init 2 */ + /* + * call pci_disable_device before pci_release_regions per + * Documentation/PCI/pci.txt + */ + pci_disable_device(h->pdev); /* pci_init 1 */ + pci_release_regions(h->pdev); /* pci_init 2 */ +} + +/* several items must be freed later */ static int hpsa_pci_init(struct ctlr_info *h) { int prod_index, err; @@ -6272,19 +7686,24 @@ static int hpsa_pci_init(struct ctlr_info *h) h->product_name = products[prod_index].product_name; h->access = *(products[prod_index].access); + h->needs_abort_tags_swizzled = + ctlr_needs_abort_tags_swizzled(h->board_id); + pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); err = pci_enable_device(h->pdev); if (err) { - dev_warn(&h->pdev->dev, "unable to enable PCI device\n"); + dev_err(&h->pdev->dev, "failed to enable PCI device\n"); + pci_disable_device(h->pdev); return err; } err = pci_request_regions(h->pdev, HPSA); if (err) { dev_err(&h->pdev->dev, - "cannot obtain PCI resources, aborting\n"); + "failed to obtain PCI resources\n"); + pci_disable_device(h->pdev); return err; } @@ -6293,38 +7712,43 @@ static int hpsa_pci_init(struct ctlr_info *h) hpsa_interrupt_mode(h); err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr); if (err) - goto err_out_free_res; + goto clean2; /* intmode+region, pci */ h->vaddr = remap_pci_mem(h->paddr, 0x250); if (!h->vaddr) { + dev_err(&h->pdev->dev, "failed to remap PCI mem\n"); err = -ENOMEM; - goto err_out_free_res; + goto clean2; /* intmode+region, pci */ } err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); if (err) - goto err_out_free_res; + goto clean3; /* vaddr, intmode+region, pci */ err = hpsa_find_cfgtables(h); if (err) - goto err_out_free_res; + goto clean3; /* vaddr, intmode+region, pci */ hpsa_find_board_params(h); if (!hpsa_CISS_signature_present(h)) { err = -ENODEV; - goto err_out_free_res; + goto clean4; /* cfgtables, vaddr, intmode+region, pci */ } hpsa_set_driver_support_bits(h); hpsa_p600_dma_prefetch_quirk(h); err = hpsa_enter_simple_mode(h); if (err) - goto err_out_free_res; + goto clean4; /* cfgtables, vaddr, intmode+region, pci */ return 0; -err_out_free_res: - if (h->transtable) - iounmap(h->transtable); - if (h->cfgtable) - iounmap(h->cfgtable); - if (h->vaddr) - iounmap(h->vaddr); +clean4: /* cfgtables, vaddr, intmode+region, pci */ + hpsa_free_cfgtables(h); +clean3: /* vaddr, intmode+region, pci */ + iounmap(h->vaddr); + h->vaddr = NULL; +clean2: /* intmode+region, pci */ + hpsa_disable_interrupt_mode(h); + /* + * call pci_disable_device before pci_release_regions per + * Documentation/PCI/pci.txt + */ pci_disable_device(h->pdev); pci_release_regions(h->pdev); return err; @@ -6346,7 +7770,7 @@ static void hpsa_hba_inquiry(struct ctlr_info *h) } } -static int hpsa_init_reset_devices(struct pci_dev *pdev) +static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id) { int rc, i; void __iomem *vaddr; @@ -6382,7 +7806,7 @@ static int hpsa_init_reset_devices(struct pci_dev *pdev) iounmap(vaddr); /* Reset the controller with a PCI power-cycle or via doorbell */ - rc = hpsa_kdump_hard_reset_controller(pdev); + rc = hpsa_kdump_hard_reset_controller(pdev, board_id); /* -ENOTSUPP here means we cannot reset the controller * but it's already (and still) up and running in @@ -6408,7 +7832,29 @@ out_disable: return rc; } -static int hpsa_allocate_cmd_pool(struct ctlr_info *h) +static void hpsa_free_cmd_pool(struct ctlr_info *h) +{ + kfree(h->cmd_pool_bits); + h->cmd_pool_bits = NULL; + if (h->cmd_pool) { + pci_free_consistent(h->pdev, + h->nr_cmds * sizeof(struct CommandList), + h->cmd_pool, + h->cmd_pool_dhandle); + h->cmd_pool = NULL; + h->cmd_pool_dhandle = 0; + } + if (h->errinfo_pool) { + pci_free_consistent(h->pdev, + h->nr_cmds * sizeof(struct ErrorInfo), + h->errinfo_pool, + h->errinfo_pool_dhandle); + h->errinfo_pool = NULL; + h->errinfo_pool_dhandle = 0; + } +} + +static int hpsa_alloc_cmd_pool(struct ctlr_info *h) { h->cmd_pool_bits = kzalloc( DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) * @@ -6425,34 +7871,13 @@ static int hpsa_allocate_cmd_pool(struct ctlr_info *h) dev_err(&h->pdev->dev, "out of memory in %s", __func__); goto clean_up; } + hpsa_preinitialize_commands(h); return 0; clean_up: hpsa_free_cmd_pool(h); return -ENOMEM; } -static void hpsa_free_cmd_pool(struct ctlr_info *h) -{ - kfree(h->cmd_pool_bits); - if (h->cmd_pool) - pci_free_consistent(h->pdev, - h->nr_cmds * sizeof(struct CommandList), - h->cmd_pool, h->cmd_pool_dhandle); - if (h->ioaccel2_cmd_pool) - pci_free_consistent(h->pdev, - h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), - h->ioaccel2_cmd_pool, h->ioaccel2_cmd_pool_dhandle); - if (h->errinfo_pool) - pci_free_consistent(h->pdev, - h->nr_cmds * sizeof(struct ErrorInfo), - h->errinfo_pool, - h->errinfo_pool_dhandle); - if (h->ioaccel_cmd_pool) - pci_free_consistent(h->pdev, - h->nr_cmds * sizeof(struct io_accel1_cmd), - h->ioaccel_cmd_pool, h->ioaccel_cmd_pool_dhandle); -} - static void hpsa_irq_affinity_hints(struct ctlr_info *h) { int i, cpu; @@ -6474,12 +7899,14 @@ static void hpsa_free_irqs(struct ctlr_info *h) i = h->intr_mode; irq_set_affinity_hint(h->intr[i], NULL); free_irq(h->intr[i], &h->q[i]); + h->q[i] = 0; return; } for (i = 0; i < h->msix_vector; i++) { irq_set_affinity_hint(h->intr[i], NULL); free_irq(h->intr[i], &h->q[i]); + h->q[i] = 0; } for (; i < MAX_REPLY_QUEUES; i++) h->q[i] = 0; @@ -6502,8 +7929,9 @@ static int hpsa_request_irqs(struct ctlr_info *h, if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) { /* If performant mode and MSI-X, use multiple reply queues */ for (i = 0; i < h->msix_vector; i++) { + sprintf(h->intrname[i], "%s-msix%d", h->devname, i); rc = request_irq(h->intr[i], msixhandler, - 0, h->devname, + 0, h->intrname[i], &h->q[i]); if (rc) { int j; @@ -6524,18 +7952,30 @@ static int hpsa_request_irqs(struct ctlr_info *h, } else { /* Use single reply pool */ if (h->msix_vector > 0 || h->msi_vector) { + if (h->msix_vector) + sprintf(h->intrname[h->intr_mode], + "%s-msix", h->devname); + else + sprintf(h->intrname[h->intr_mode], + "%s-msi", h->devname); rc = request_irq(h->intr[h->intr_mode], - msixhandler, 0, h->devname, + msixhandler, 0, + h->intrname[h->intr_mode], &h->q[h->intr_mode]); } else { + sprintf(h->intrname[h->intr_mode], + "%s-intx", h->devname); rc = request_irq(h->intr[h->intr_mode], - intxhandler, IRQF_SHARED, h->devname, + intxhandler, IRQF_SHARED, + h->intrname[h->intr_mode], &h->q[h->intr_mode]); } + irq_set_affinity_hint(h->intr[h->intr_mode], NULL); } if (rc) { - dev_err(&h->pdev->dev, "unable to get irq %d for %s\n", + dev_err(&h->pdev->dev, "failed to get irq %d for %s\n", h->intr[h->intr_mode], h->devname); + hpsa_free_irqs(h); return -ENODEV; } return 0; @@ -6543,42 +7983,27 @@ static int hpsa_request_irqs(struct ctlr_info *h, static int hpsa_kdump_soft_reset(struct ctlr_info *h) { - if (hpsa_send_host_reset(h, RAID_CTLR_LUNID, - HPSA_RESET_TYPE_CONTROLLER)) { - dev_warn(&h->pdev->dev, "Resetting array controller failed.\n"); - return -EIO; - } + int rc; + hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER); dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n"); - if (hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY)) { + rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY); + if (rc) { dev_warn(&h->pdev->dev, "Soft reset had no effect.\n"); - return -1; + return rc; } dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n"); - if (hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY)) { + rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY); + if (rc) { dev_warn(&h->pdev->dev, "Board failed to become ready " "after soft reset.\n"); - return -1; + return rc; } return 0; } -static void hpsa_free_irqs_and_disable_msix(struct ctlr_info *h) -{ - hpsa_free_irqs(h); -#ifdef CONFIG_PCI_MSI - if (h->msix_vector) { - if (h->pdev->msix_enabled) - pci_disable_msix(h->pdev); - } else if (h->msi_vector) { - if (h->pdev->msi_enabled) - pci_disable_msi(h->pdev); - } -#endif /* CONFIG_PCI_MSI */ -} - static void hpsa_free_reply_queues(struct ctlr_info *h) { int i; @@ -6586,30 +8011,36 @@ static void hpsa_free_reply_queues(struct ctlr_info *h) for (i = 0; i < h->nreply_queues; i++) { if (!h->reply_queue[i].head) continue; - pci_free_consistent(h->pdev, h->reply_queue_size, - h->reply_queue[i].head, h->reply_queue[i].busaddr); + pci_free_consistent(h->pdev, + h->reply_queue_size, + h->reply_queue[i].head, + h->reply_queue[i].busaddr); h->reply_queue[i].head = NULL; h->reply_queue[i].busaddr = 0; } + h->reply_queue_size = 0; } static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h) { - hpsa_free_irqs_and_disable_msix(h); - hpsa_free_sg_chain_blocks(h); - hpsa_free_cmd_pool(h); - kfree(h->ioaccel1_blockFetchTable); - kfree(h->blockFetchTable); - hpsa_free_reply_queues(h); - if (h->vaddr) - iounmap(h->vaddr); - if (h->transtable) - iounmap(h->transtable); - if (h->cfgtable) - iounmap(h->cfgtable); - pci_disable_device(h->pdev); - pci_release_regions(h->pdev); - kfree(h); + hpsa_free_performant_mode(h); /* init_one 7 */ + hpsa_free_sg_chain_blocks(h); /* init_one 6 */ + hpsa_free_cmd_pool(h); /* init_one 5 */ + hpsa_free_irqs(h); /* init_one 4 */ + scsi_host_put(h->scsi_host); /* init_one 3 */ + h->scsi_host = NULL; /* init_one 3 */ + hpsa_free_pci_init(h); /* init_one 2_5 */ + free_percpu(h->lockup_detected); /* init_one 2 */ + h->lockup_detected = NULL; /* init_one 2 */ + if (h->resubmit_wq) { + destroy_workqueue(h->resubmit_wq); /* init_one 1 */ + h->resubmit_wq = NULL; + } + if (h->rescan_ctlr_wq) { + destroy_workqueue(h->rescan_ctlr_wq); + h->rescan_ctlr_wq = NULL; + } + kfree(h); /* init_one 1 */ } /* Called when controller lockup detected. */ @@ -6617,17 +8048,22 @@ static void fail_all_outstanding_cmds(struct ctlr_info *h) { int i, refcount; struct CommandList *c; + int failcount = 0; flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */ for (i = 0; i < h->nr_cmds; i++) { c = h->cmd_pool + i; refcount = atomic_inc_return(&c->refcount); if (refcount > 1) { - c->err_info->CommandStatus = CMD_HARDWARE_ERR; + c->err_info->CommandStatus = CMD_CTLR_LOCKUP; finish_cmd(c); + atomic_dec(&h->commands_outstanding); + failcount++; } cmd_free(h, c); } + dev_warn(&h->pdev->dev, + "failed %d commands in fail_all\n", failcount); } static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value) @@ -6653,18 +8089,19 @@ static void controller_lockup_detected(struct ctlr_info *h) if (!lockup_detected) { /* no heartbeat, but controller gave us a zero. */ dev_warn(&h->pdev->dev, - "lockup detected but scratchpad register is zero\n"); + "lockup detected after %d but scratchpad register is zero\n", + h->heartbeat_sample_interval / HZ); lockup_detected = 0xffffffff; } set_lockup_detected_for_all_cpus(h, lockup_detected); spin_unlock_irqrestore(&h->lock, flags); - dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x\n", - lockup_detected); + dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n", + lockup_detected, h->heartbeat_sample_interval / HZ); pci_disable_device(h->pdev); fail_all_outstanding_cmds(h); } -static void detect_controller_lockup(struct ctlr_info *h) +static int detect_controller_lockup(struct ctlr_info *h) { u64 now; u32 heartbeat; @@ -6674,7 +8111,7 @@ static void detect_controller_lockup(struct ctlr_info *h) /* If we've received an interrupt recently, we're ok. */ if (time_after64(h->last_intr_timestamp + (h->heartbeat_sample_interval), now)) - return; + return false; /* * If we've already checked the heartbeat recently, we're ok. @@ -6683,7 +8120,7 @@ static void detect_controller_lockup(struct ctlr_info *h) */ if (time_after64(h->last_heartbeat_timestamp + (h->heartbeat_sample_interval), now)) - return; + return false; /* If heartbeat has not changed since we last looked, we're not ok. */ spin_lock_irqsave(&h->lock, flags); @@ -6691,12 +8128,13 @@ static void detect_controller_lockup(struct ctlr_info *h) spin_unlock_irqrestore(&h->lock, flags); if (h->last_heartbeat == heartbeat) { controller_lockup_detected(h); - return; + return true; } /* We're ok. */ h->last_heartbeat = heartbeat; h->last_heartbeat_timestamp = now; + return false; } static void hpsa_ack_ctlr_events(struct ctlr_info *h) @@ -6752,6 +8190,11 @@ static void hpsa_ack_ctlr_events(struct ctlr_info *h) */ static int hpsa_ctlr_needs_rescan(struct ctlr_info *h) { + if (h->drv_req_rescan) { + h->drv_req_rescan = 0; + return 1; + } + if (!(h->fw_support & MISC_FW_EVENT_NOTIFY)) return 0; @@ -6785,6 +8228,41 @@ static int hpsa_offline_devices_ready(struct ctlr_info *h) return 0; } +static int hpsa_luns_changed(struct ctlr_info *h) +{ + int rc = 1; /* assume there are changes */ + struct ReportLUNdata *logdev = NULL; + + /* if we can't find out if lun data has changed, + * assume that it has. + */ + + if (!h->lastlogicals) + goto out; + + logdev = kzalloc(sizeof(*logdev), GFP_KERNEL); + if (!logdev) { + dev_warn(&h->pdev->dev, + "Out of memory, can't track lun changes.\n"); + goto out; + } + if (hpsa_scsi_do_report_luns(h, 1, logdev, sizeof(*logdev), 0)) { + dev_warn(&h->pdev->dev, + "report luns failed, can't track lun changes.\n"); + goto out; + } + if (memcmp(logdev, h->lastlogicals, sizeof(*logdev))) { + dev_info(&h->pdev->dev, + "Lun changes detected.\n"); + memcpy(h->lastlogicals, logdev, sizeof(*logdev)); + goto out; + } else + rc = 0; /* no changes detected. */ +out: + kfree(logdev); + return rc; +} + static void hpsa_rescan_ctlr_worker(struct work_struct *work) { unsigned long flags; @@ -6800,6 +8278,19 @@ static void hpsa_rescan_ctlr_worker(struct work_struct *work) hpsa_ack_ctlr_events(h); hpsa_scan_start(h->scsi_host); scsi_host_put(h->scsi_host); + } else if (h->discovery_polling) { + hpsa_disable_rld_caching(h); + if (hpsa_luns_changed(h)) { + struct Scsi_Host *sh = NULL; + + dev_info(&h->pdev->dev, + "driver discovery polling rescan.\n"); + sh = scsi_host_get(h->scsi_host); + if (sh != NULL) { + hpsa_scan_start(sh); + scsi_host_put(sh); + } + } } spin_lock_irqsave(&h->lock, flags); if (!h->remove_in_progress) @@ -6843,11 +8334,18 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) struct ctlr_info *h; int try_soft_reset = 0; unsigned long flags; + u32 board_id; if (number_of_controllers == 0) printk(KERN_INFO DRIVER_NAME "\n"); - rc = hpsa_init_reset_devices(pdev); + rc = hpsa_lookup_board_id(pdev, &board_id); + if (rc < 0) { + dev_warn(&pdev->dev, "Board ID not found\n"); + return rc; + } + + rc = hpsa_init_reset_devices(pdev, board_id); if (rc) { if (rc != -ENOTSUPP) return rc; @@ -6868,42 +8366,41 @@ reinit_after_soft_reset: */ BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT); h = kzalloc(sizeof(*h), GFP_KERNEL); - if (!h) + if (!h) { + dev_err(&pdev->dev, "Failed to allocate controller head\n"); return -ENOMEM; + } h->pdev = pdev; + h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT; INIT_LIST_HEAD(&h->offline_device_list); spin_lock_init(&h->lock); spin_lock_init(&h->offline_device_lock); spin_lock_init(&h->scan_lock); atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS); - - h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan"); - if (!h->rescan_ctlr_wq) { - rc = -ENOMEM; - goto clean1; - } - - h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit"); - if (!h->resubmit_wq) { - rc = -ENOMEM; - goto clean1; - } + atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS); /* Allocate and clear per-cpu variable lockup_detected */ h->lockup_detected = alloc_percpu(u32); if (!h->lockup_detected) { + dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n"); rc = -ENOMEM; - goto clean1; + goto clean1; /* aer/h */ } set_lockup_detected_for_all_cpus(h, 0); rc = hpsa_pci_init(h); - if (rc != 0) - goto clean1; + if (rc) + goto clean2; /* lu, aer/h */ - sprintf(h->devname, HPSA "%d", number_of_controllers); + /* relies on h-> settings made by hpsa_pci_init, including + * interrupt_mode h->intr */ + rc = hpsa_scsi_host_alloc(h); + if (rc) + goto clean2_5; /* pci, lu, aer/h */ + + sprintf(h->devname, HPSA "%d", h->scsi_host->host_no); h->ctlr = number_of_controllers; number_of_controllers++; @@ -6917,34 +8414,56 @@ reinit_after_soft_reset: dac = 0; } else { dev_err(&pdev->dev, "no suitable DMA available\n"); - goto clean1; + goto clean3; /* shost, pci, lu, aer/h */ } } /* make sure the board interrupts are off */ h->access.set_intr_mask(h, HPSA_INTR_OFF); - if (hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx)) - goto clean2; - dev_info(&pdev->dev, "%s: <0x%x> at IRQ %d%s using DAC\n", - h->devname, pdev->device, - h->intr[h->intr_mode], dac ? "" : " not"); - rc = hpsa_allocate_cmd_pool(h); + rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx); + if (rc) + goto clean3; /* shost, pci, lu, aer/h */ + rc = hpsa_alloc_cmd_pool(h); if (rc) - goto clean2_and_free_irqs; - if (hpsa_allocate_sg_chain_blocks(h)) - goto clean4; + goto clean4; /* irq, shost, pci, lu, aer/h */ + rc = hpsa_alloc_sg_chain_blocks(h); + if (rc) + goto clean5; /* cmd, irq, shost, pci, lu, aer/h */ init_waitqueue_head(&h->scan_wait_queue); + init_waitqueue_head(&h->abort_cmd_wait_queue); + init_waitqueue_head(&h->event_sync_wait_queue); + mutex_init(&h->reset_mutex); h->scan_finished = 1; /* no scan currently in progress */ pci_set_drvdata(pdev, h); h->ndevices = 0; - h->hba_mode_enabled = 0; - h->scsi_host = NULL; + spin_lock_init(&h->devlock); - hpsa_put_ctlr_into_performant_mode(h); + rc = hpsa_put_ctlr_into_performant_mode(h); + if (rc) + goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */ - /* At this point, the controller is ready to take commands. + /* hook into SCSI subsystem */ + rc = hpsa_scsi_add_host(h); + if (rc) + goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ + + /* create the resubmit workqueue */ + h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan"); + if (!h->rescan_ctlr_wq) { + rc = -ENOMEM; + goto clean7; + } + + h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit"); + if (!h->resubmit_wq) { + rc = -ENOMEM; + goto clean7; /* aer/h */ + } + + /* + * At this point, the controller is ready to take commands. * Now, if reset_devices and the hard reset didn't work, try * the soft reset and see if that works. */ @@ -6966,13 +8485,24 @@ reinit_after_soft_reset: if (rc) { dev_warn(&h->pdev->dev, "Failed to request_irq after soft reset.\n"); - goto clean4; + /* + * cannot goto clean7 or free_irqs will be called + * again. Instead, do its work + */ + hpsa_free_performant_mode(h); /* clean7 */ + hpsa_free_sg_chain_blocks(h); /* clean6 */ + hpsa_free_cmd_pool(h); /* clean5 */ + /* + * skip hpsa_free_irqs(h) clean4 since that + * was just called before request_irqs failed + */ + goto clean3; } rc = hpsa_kdump_soft_reset(h); if (rc) /* Neither hard nor soft reset worked, we're hosed. */ - goto clean4; + goto clean7; dev_info(&h->pdev->dev, "Board READY.\n"); dev_info(&h->pdev->dev, @@ -6993,21 +8523,27 @@ reinit_after_soft_reset: hpsa_undo_allocations_after_kdump_soft_reset(h); try_soft_reset = 0; if (rc) - /* don't go to clean4, we already unallocated */ + /* don't goto clean, we already unallocated */ return -ENODEV; goto reinit_after_soft_reset; } - /* Enable Accelerated IO path at driver layer */ - h->acciopath_status = 1; + /* Enable Accelerated IO path at driver layer */ + h->acciopath_status = 1; + /* Disable discovery polling.*/ + h->discovery_polling = 0; /* Turn the interrupts on so we can service requests */ h->access.set_intr_mask(h, HPSA_INTR_ON); hpsa_hba_inquiry(h); - hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */ + + h->lastlogicals = kzalloc(sizeof(*(h->lastlogicals)), GFP_KERNEL); + if (!h->lastlogicals) + dev_info(&h->pdev->dev, + "Can't track change to report lun data\n"); /* Monitor the controller for firmware lockups */ h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; @@ -7019,19 +8555,34 @@ reinit_after_soft_reset: h->heartbeat_sample_interval); return 0; -clean4: +clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ + hpsa_free_performant_mode(h); + h->access.set_intr_mask(h, HPSA_INTR_OFF); +clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */ hpsa_free_sg_chain_blocks(h); +clean5: /* cmd, irq, shost, pci, lu, aer/h */ hpsa_free_cmd_pool(h); -clean2_and_free_irqs: +clean4: /* irq, shost, pci, lu, aer/h */ hpsa_free_irqs(h); -clean2: -clean1: - if (h->resubmit_wq) +clean3: /* shost, pci, lu, aer/h */ + scsi_host_put(h->scsi_host); + h->scsi_host = NULL; +clean2_5: /* pci, lu, aer/h */ + hpsa_free_pci_init(h); +clean2: /* lu, aer/h */ + if (h->lockup_detected) { + free_percpu(h->lockup_detected); + h->lockup_detected = NULL; + } +clean1: /* wq/aer/h */ + if (h->resubmit_wq) { destroy_workqueue(h->resubmit_wq); - if (h->rescan_ctlr_wq) + h->resubmit_wq = NULL; + } + if (h->rescan_ctlr_wq) { destroy_workqueue(h->rescan_ctlr_wq); - if (h->lockup_detected) - free_percpu(h->lockup_detected); + h->rescan_ctlr_wq = NULL; + } kfree(h); return rc; } @@ -7040,8 +8591,8 @@ static void hpsa_flush_cache(struct ctlr_info *h) { char *flush_buf; struct CommandList *c; + int rc; - /* Don't bother trying to flush the cache if locked up */ if (unlikely(lockup_detected(h))) return; flush_buf = kzalloc(4, GFP_KERNEL); @@ -7049,24 +8600,88 @@ static void hpsa_flush_cache(struct ctlr_info *h) return; c = cmd_alloc(h); - if (!c) { - dev_warn(&h->pdev->dev, "cmd_alloc returned NULL!\n"); - goto out_of_memory; - } + if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0, RAID_CTLR_LUNID, TYPE_CMD)) { goto out; } - hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_TODEVICE); + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_TODEVICE, NO_TIMEOUT); + if (rc) + goto out; if (c->err_info->CommandStatus != 0) out: dev_warn(&h->pdev->dev, "error flushing cache on controller\n"); cmd_free(h, c); -out_of_memory: kfree(flush_buf); } +/* Make controller gather fresh report lun data each time we + * send down a report luns request + */ +static void hpsa_disable_rld_caching(struct ctlr_info *h) +{ + u32 *options; + struct CommandList *c; + int rc; + + /* Don't bother trying to set diag options if locked up */ + if (unlikely(h->lockup_detected)) + return; + + options = kzalloc(sizeof(*options), GFP_KERNEL); + if (!options) { + dev_err(&h->pdev->dev, + "Error: failed to disable rld caching, during alloc.\n"); + return; + } + + c = cmd_alloc(h); + + /* first, get the current diag options settings */ + if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, + RAID_CTLR_LUNID, TYPE_CMD)) + goto errout; + + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_FROMDEVICE, NO_TIMEOUT); + if ((rc != 0) || (c->err_info->CommandStatus != 0)) + goto errout; + + /* Now, set the bit for disabling the RLD caching */ + *options |= HPSA_DIAG_OPTS_DISABLE_RLD_CACHING; + + if (fill_cmd(c, BMIC_SET_DIAG_OPTIONS, h, options, 4, 0, + RAID_CTLR_LUNID, TYPE_CMD)) + goto errout; + + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_TODEVICE, NO_TIMEOUT); + if ((rc != 0) || (c->err_info->CommandStatus != 0)) + goto errout; + + /* Now verify that it got set: */ + if (fill_cmd(c, BMIC_SENSE_DIAG_OPTIONS, h, options, 4, 0, + RAID_CTLR_LUNID, TYPE_CMD)) + goto errout; + + rc = hpsa_scsi_do_simple_cmd_with_retry(h, c, + PCI_DMA_FROMDEVICE, NO_TIMEOUT); + if ((rc != 0) || (c->err_info->CommandStatus != 0)) + goto errout; + + if (*options & HPSA_DIAG_OPTS_DISABLE_RLD_CACHING) + goto out; + +errout: + dev_err(&h->pdev->dev, + "Error: failed to disable report lun data caching.\n"); +out: + cmd_free(h, c); + kfree(options); +} + static void hpsa_shutdown(struct pci_dev *pdev) { struct ctlr_info *h; @@ -7078,15 +8693,18 @@ static void hpsa_shutdown(struct pci_dev *pdev) */ hpsa_flush_cache(h); h->access.set_intr_mask(h, HPSA_INTR_OFF); - hpsa_free_irqs_and_disable_msix(h); + hpsa_free_irqs(h); /* init_one 4 */ + hpsa_disable_interrupt_mode(h); /* pci_init 2 */ } static void hpsa_free_device_info(struct ctlr_info *h) { int i; - for (i = 0; i < h->ndevices; i++) + for (i = 0; i < h->ndevices; i++) { kfree(h->dev[i]); + h->dev[i] = NULL; + } } static void hpsa_remove_one(struct pci_dev *pdev) @@ -7108,29 +8726,44 @@ static void hpsa_remove_one(struct pci_dev *pdev) cancel_delayed_work_sync(&h->rescan_ctlr_work); destroy_workqueue(h->rescan_ctlr_wq); destroy_workqueue(h->resubmit_wq); - hpsa_unregister_scsi(h); /* unhook from SCSI subsystem */ + + /* + * Call before disabling interrupts. + * scsi_remove_host can trigger I/O operations especially + * when multipath is enabled. There can be SYNCHRONIZE CACHE + * operations which cannot complete and will hang the system. + */ + if (h->scsi_host) + scsi_remove_host(h->scsi_host); /* init_one 8 */ + /* includes hpsa_free_irqs - init_one 4 */ + /* includes hpsa_disable_interrupt_mode - pci_init 2 */ hpsa_shutdown(pdev); - iounmap(h->vaddr); - iounmap(h->transtable); - iounmap(h->cfgtable); - hpsa_free_device_info(h); - hpsa_free_sg_chain_blocks(h); - pci_free_consistent(h->pdev, - h->nr_cmds * sizeof(struct CommandList), - h->cmd_pool, h->cmd_pool_dhandle); - pci_free_consistent(h->pdev, - h->nr_cmds * sizeof(struct ErrorInfo), - h->errinfo_pool, h->errinfo_pool_dhandle); - hpsa_free_reply_queues(h); - kfree(h->cmd_pool_bits); - kfree(h->blockFetchTable); - kfree(h->ioaccel1_blockFetchTable); - kfree(h->ioaccel2_blockFetchTable); - kfree(h->hba_inquiry_data); - pci_disable_device(pdev); - pci_release_regions(pdev); - free_percpu(h->lockup_detected); - kfree(h); + + hpsa_free_device_info(h); /* scan */ + + kfree(h->hba_inquiry_data); /* init_one 10 */ + h->hba_inquiry_data = NULL; /* init_one 10 */ + hpsa_free_ioaccel2_sg_chain_blocks(h); + hpsa_free_performant_mode(h); /* init_one 7 */ + hpsa_free_sg_chain_blocks(h); /* init_one 6 */ + hpsa_free_cmd_pool(h); /* init_one 5 */ + kfree(h->lastlogicals); + + /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */ + + scsi_host_put(h->scsi_host); /* init_one 3 */ + h->scsi_host = NULL; /* init_one 3 */ + + /* includes hpsa_disable_interrupt_mode - pci_init 2 */ + hpsa_free_pci_init(h); /* init_one 2.5 */ + + free_percpu(h->lockup_detected); /* init_one 2 */ + h->lockup_detected = NULL; /* init_one 2 */ + /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */ + + hpsa_delete_sas_host(h); + + kfree(h); /* init_one 1 */ } static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev, @@ -7188,7 +8821,10 @@ static void calc_bucket_map(int bucket[], int num_buckets, } } -/* return -ENODEV or other reason on error, 0 on success */ +/* + * return -ENODEV on err, 0 on success (or no action) + * allocates numerous items that must be freed later + */ static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support) { int i; @@ -7370,7 +9006,23 @@ static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support) return 0; } -static int hpsa_alloc_ioaccel_cmd_and_bft(struct ctlr_info *h) +/* Free ioaccel1 mode command blocks and block fetch table */ +static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h) +{ + if (h->ioaccel_cmd_pool) { + pci_free_consistent(h->pdev, + h->nr_cmds * sizeof(*h->ioaccel_cmd_pool), + h->ioaccel_cmd_pool, + h->ioaccel_cmd_pool_dhandle); + h->ioaccel_cmd_pool = NULL; + h->ioaccel_cmd_pool_dhandle = 0; + } + kfree(h->ioaccel1_blockFetchTable); + h->ioaccel1_blockFetchTable = NULL; +} + +/* Allocate ioaccel1 mode command blocks and block fetch table */ +static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h) { h->ioaccel_maxsg = readl(&(h->cfgtable->io_accel_max_embedded_sg_count)); @@ -7401,16 +9053,32 @@ static int hpsa_alloc_ioaccel_cmd_and_bft(struct ctlr_info *h) return 0; clean_up: - if (h->ioaccel_cmd_pool) + hpsa_free_ioaccel1_cmd_and_bft(h); + return -ENOMEM; +} + +/* Free ioaccel2 mode command blocks and block fetch table */ +static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h) +{ + hpsa_free_ioaccel2_sg_chain_blocks(h); + + if (h->ioaccel2_cmd_pool) { pci_free_consistent(h->pdev, - h->nr_cmds * sizeof(*h->ioaccel_cmd_pool), - h->ioaccel_cmd_pool, h->ioaccel_cmd_pool_dhandle); - kfree(h->ioaccel1_blockFetchTable); - return 1; + h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), + h->ioaccel2_cmd_pool, + h->ioaccel2_cmd_pool_dhandle); + h->ioaccel2_cmd_pool = NULL; + h->ioaccel2_cmd_pool_dhandle = 0; + } + kfree(h->ioaccel2_blockFetchTable); + h->ioaccel2_blockFetchTable = NULL; } -static int ioaccel2_alloc_cmds_and_bft(struct ctlr_info *h) +/* Allocate ioaccel2 mode command blocks and block fetch table */ +static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h) { + int rc; + /* Allocate ioaccel2 mode command blocks and block fetch table */ h->ioaccel_maxsg = @@ -7430,7 +9098,13 @@ static int ioaccel2_alloc_cmds_and_bft(struct ctlr_info *h) sizeof(u32)), GFP_KERNEL); if ((h->ioaccel2_cmd_pool == NULL) || - (h->ioaccel2_blockFetchTable == NULL)) + (h->ioaccel2_blockFetchTable == NULL)) { + rc = -ENOMEM; + goto clean_up; + } + + rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h); + if (rc) goto clean_up; memset(h->ioaccel2_cmd_pool, 0, @@ -7438,41 +9112,50 @@ static int ioaccel2_alloc_cmds_and_bft(struct ctlr_info *h) return 0; clean_up: - if (h->ioaccel2_cmd_pool) - pci_free_consistent(h->pdev, - h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool), - h->ioaccel2_cmd_pool, h->ioaccel2_cmd_pool_dhandle); - kfree(h->ioaccel2_blockFetchTable); - return 1; + hpsa_free_ioaccel2_cmd_and_bft(h); + return rc; } -static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) +/* Free items allocated by hpsa_put_ctlr_into_performant_mode */ +static void hpsa_free_performant_mode(struct ctlr_info *h) +{ + kfree(h->blockFetchTable); + h->blockFetchTable = NULL; + hpsa_free_reply_queues(h); + hpsa_free_ioaccel1_cmd_and_bft(h); + hpsa_free_ioaccel2_cmd_and_bft(h); +} + +/* return -ENODEV on error, 0 on success (or no action) + * allocates numerous items that must be freed later + */ +static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) { u32 trans_support; unsigned long transMethod = CFGTBL_Trans_Performant | CFGTBL_Trans_use_short_tags; - int i; + int i, rc; if (hpsa_simple_mode) - return; + return 0; trans_support = readl(&(h->cfgtable->TransportSupport)); if (!(trans_support & PERFORMANT_MODE)) - return; + return 0; /* Check for I/O accelerator mode support */ if (trans_support & CFGTBL_Trans_io_accel1) { transMethod |= CFGTBL_Trans_io_accel1 | CFGTBL_Trans_enable_directed_msix; - if (hpsa_alloc_ioaccel_cmd_and_bft(h)) - goto clean_up; - } else { - if (trans_support & CFGTBL_Trans_io_accel2) { - transMethod |= CFGTBL_Trans_io_accel2 | + rc = hpsa_alloc_ioaccel1_cmd_and_bft(h); + if (rc) + return rc; + } else if (trans_support & CFGTBL_Trans_io_accel2) { + transMethod |= CFGTBL_Trans_io_accel2 | CFGTBL_Trans_enable_directed_msix; - if (ioaccel2_alloc_cmds_and_bft(h)) - goto clean_up; - } + rc = hpsa_alloc_ioaccel2_cmd_and_bft(h); + if (rc) + return rc; } h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1; @@ -7484,8 +9167,10 @@ static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) h->reply_queue[i].head = pci_alloc_consistent(h->pdev, h->reply_queue_size, &(h->reply_queue[i].busaddr)); - if (!h->reply_queue[i].head) - goto clean_up; + if (!h->reply_queue[i].head) { + rc = -ENOMEM; + goto clean1; /* rq, ioaccel */ + } h->reply_queue[i].size = h->max_commands; h->reply_queue[i].wraparound = 1; /* spec: init to 1 */ h->reply_queue[i].current_entry = 0; @@ -7494,15 +9179,24 @@ static void hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h) /* Need a block fetch table for performant mode */ h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) * sizeof(u32)), GFP_KERNEL); - if (!h->blockFetchTable) - goto clean_up; + if (!h->blockFetchTable) { + rc = -ENOMEM; + goto clean1; /* rq, ioaccel */ + } - hpsa_enter_performant_mode(h, trans_support); - return; + rc = hpsa_enter_performant_mode(h, trans_support); + if (rc) + goto clean2; /* bft, rq, ioaccel */ + return 0; -clean_up: - hpsa_free_reply_queues(h); +clean2: /* bft, rq, ioaccel */ kfree(h->blockFetchTable); + h->blockFetchTable = NULL; +clean1: /* rq, ioaccel */ + hpsa_free_reply_queues(h); + hpsa_free_ioaccel1_cmd_and_bft(h); + hpsa_free_ioaccel2_cmd_and_bft(h); + return rc; } static int is_accelerated_cmd(struct CommandList *c) @@ -7531,18 +9225,369 @@ static void hpsa_drain_accel_commands(struct ctlr_info *h) } while (1); } +static struct hpsa_sas_phy *hpsa_alloc_sas_phy( + struct hpsa_sas_port *hpsa_sas_port) +{ + struct hpsa_sas_phy *hpsa_sas_phy; + struct sas_phy *phy; + + hpsa_sas_phy = kzalloc(sizeof(*hpsa_sas_phy), GFP_KERNEL); + if (!hpsa_sas_phy) + return NULL; + + phy = sas_phy_alloc(hpsa_sas_port->parent_node->parent_dev, + hpsa_sas_port->next_phy_index); + if (!phy) { + kfree(hpsa_sas_phy); + return NULL; + } + + hpsa_sas_port->next_phy_index++; + hpsa_sas_phy->phy = phy; + hpsa_sas_phy->parent_port = hpsa_sas_port; + + return hpsa_sas_phy; +} + +static void hpsa_free_sas_phy(struct hpsa_sas_phy *hpsa_sas_phy) +{ + struct sas_phy *phy = hpsa_sas_phy->phy; + + sas_port_delete_phy(hpsa_sas_phy->parent_port->port, phy); + sas_phy_free(phy); + if (hpsa_sas_phy->added_to_port) + list_del(&hpsa_sas_phy->phy_list_entry); + kfree(hpsa_sas_phy); +} + +static int hpsa_sas_port_add_phy(struct hpsa_sas_phy *hpsa_sas_phy) +{ + int rc; + struct hpsa_sas_port *hpsa_sas_port; + struct sas_phy *phy; + struct sas_identify *identify; + + hpsa_sas_port = hpsa_sas_phy->parent_port; + phy = hpsa_sas_phy->phy; + + identify = &phy->identify; + memset(identify, 0, sizeof(*identify)); + identify->sas_address = hpsa_sas_port->sas_address; + identify->device_type = SAS_END_DEVICE; + identify->initiator_port_protocols = SAS_PROTOCOL_STP; + identify->target_port_protocols = SAS_PROTOCOL_STP; + phy->minimum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; + phy->maximum_linkrate_hw = SAS_LINK_RATE_UNKNOWN; + phy->minimum_linkrate = SAS_LINK_RATE_UNKNOWN; + phy->maximum_linkrate = SAS_LINK_RATE_UNKNOWN; + phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; + + rc = sas_phy_add(hpsa_sas_phy->phy); + if (rc) + return rc; + + sas_port_add_phy(hpsa_sas_port->port, hpsa_sas_phy->phy); + list_add_tail(&hpsa_sas_phy->phy_list_entry, + &hpsa_sas_port->phy_list_head); + hpsa_sas_phy->added_to_port = true; + + return 0; +} + +static int + hpsa_sas_port_add_rphy(struct hpsa_sas_port *hpsa_sas_port, + struct sas_rphy *rphy) +{ + struct sas_identify *identify; + + identify = &rphy->identify; + identify->sas_address = hpsa_sas_port->sas_address; + identify->initiator_port_protocols = SAS_PROTOCOL_STP; + identify->target_port_protocols = SAS_PROTOCOL_STP; + + return sas_rphy_add(rphy); +} + +static struct hpsa_sas_port + *hpsa_alloc_sas_port(struct hpsa_sas_node *hpsa_sas_node, + u64 sas_address) +{ + int rc; + struct hpsa_sas_port *hpsa_sas_port; + struct sas_port *port; + + hpsa_sas_port = kzalloc(sizeof(*hpsa_sas_port), GFP_KERNEL); + if (!hpsa_sas_port) + return NULL; + + INIT_LIST_HEAD(&hpsa_sas_port->phy_list_head); + hpsa_sas_port->parent_node = hpsa_sas_node; + + port = sas_port_alloc_num(hpsa_sas_node->parent_dev); + if (!port) + goto free_hpsa_port; + + rc = sas_port_add(port); + if (rc) + goto free_sas_port; + + hpsa_sas_port->port = port; + hpsa_sas_port->sas_address = sas_address; + list_add_tail(&hpsa_sas_port->port_list_entry, + &hpsa_sas_node->port_list_head); + + return hpsa_sas_port; + +free_sas_port: + sas_port_free(port); +free_hpsa_port: + kfree(hpsa_sas_port); + + return NULL; +} + +static void hpsa_free_sas_port(struct hpsa_sas_port *hpsa_sas_port) +{ + struct hpsa_sas_phy *hpsa_sas_phy; + struct hpsa_sas_phy *next; + + list_for_each_entry_safe(hpsa_sas_phy, next, + &hpsa_sas_port->phy_list_head, phy_list_entry) + hpsa_free_sas_phy(hpsa_sas_phy); + + sas_port_delete(hpsa_sas_port->port); + list_del(&hpsa_sas_port->port_list_entry); + kfree(hpsa_sas_port); +} + +static struct hpsa_sas_node *hpsa_alloc_sas_node(struct device *parent_dev) +{ + struct hpsa_sas_node *hpsa_sas_node; + + hpsa_sas_node = kzalloc(sizeof(*hpsa_sas_node), GFP_KERNEL); + if (hpsa_sas_node) { + hpsa_sas_node->parent_dev = parent_dev; + INIT_LIST_HEAD(&hpsa_sas_node->port_list_head); + } + + return hpsa_sas_node; +} + +static void hpsa_free_sas_node(struct hpsa_sas_node *hpsa_sas_node) +{ + struct hpsa_sas_port *hpsa_sas_port; + struct hpsa_sas_port *next; + + if (!hpsa_sas_node) + return; + + list_for_each_entry_safe(hpsa_sas_port, next, + &hpsa_sas_node->port_list_head, port_list_entry) + hpsa_free_sas_port(hpsa_sas_port); + + kfree(hpsa_sas_node); +} + +static struct hpsa_scsi_dev_t + *hpsa_find_device_by_sas_rphy(struct ctlr_info *h, + struct sas_rphy *rphy) +{ + int i; + struct hpsa_scsi_dev_t *device; + + for (i = 0; i < h->ndevices; i++) { + device = h->dev[i]; + if (!device->sas_port) + continue; + if (device->sas_port->rphy == rphy) + return device; + } + + return NULL; +} + +static int hpsa_add_sas_host(struct ctlr_info *h) +{ + int rc; + struct device *parent_dev; + struct hpsa_sas_node *hpsa_sas_node; + struct hpsa_sas_port *hpsa_sas_port; + struct hpsa_sas_phy *hpsa_sas_phy; + + parent_dev = &h->scsi_host->shost_gendev; + + hpsa_sas_node = hpsa_alloc_sas_node(parent_dev); + if (!hpsa_sas_node) + return -ENOMEM; + + hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, h->sas_address); + if (!hpsa_sas_port) { + rc = -ENODEV; + goto free_sas_node; + } + + hpsa_sas_phy = hpsa_alloc_sas_phy(hpsa_sas_port); + if (!hpsa_sas_phy) { + rc = -ENODEV; + goto free_sas_port; + } + + rc = hpsa_sas_port_add_phy(hpsa_sas_phy); + if (rc) + goto free_sas_phy; + + h->sas_host = hpsa_sas_node; + + return 0; + +free_sas_phy: + hpsa_free_sas_phy(hpsa_sas_phy); +free_sas_port: + hpsa_free_sas_port(hpsa_sas_port); +free_sas_node: + hpsa_free_sas_node(hpsa_sas_node); + + return rc; +} + +static void hpsa_delete_sas_host(struct ctlr_info *h) +{ + hpsa_free_sas_node(h->sas_host); +} + +static int hpsa_add_sas_device(struct hpsa_sas_node *hpsa_sas_node, + struct hpsa_scsi_dev_t *device) +{ + int rc; + struct hpsa_sas_port *hpsa_sas_port; + struct sas_rphy *rphy; + + hpsa_sas_port = hpsa_alloc_sas_port(hpsa_sas_node, device->sas_address); + if (!hpsa_sas_port) + return -ENOMEM; + + rphy = sas_end_device_alloc(hpsa_sas_port->port); + if (!rphy) { + rc = -ENODEV; + goto free_sas_port; + } + + hpsa_sas_port->rphy = rphy; + device->sas_port = hpsa_sas_port; + + rc = hpsa_sas_port_add_rphy(hpsa_sas_port, rphy); + if (rc) + goto free_sas_port; + + return 0; + +free_sas_port: + hpsa_free_sas_port(hpsa_sas_port); + device->sas_port = NULL; + + return rc; +} + +static void hpsa_remove_sas_device(struct hpsa_scsi_dev_t *device) +{ + if (device->sas_port) { + hpsa_free_sas_port(device->sas_port); + device->sas_port = NULL; + } +} + +static int +hpsa_sas_get_linkerrors(struct sas_phy *phy) +{ + return 0; +} + +static int +hpsa_sas_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier) +{ + return 0; +} + +static int +hpsa_sas_get_bay_identifier(struct sas_rphy *rphy) +{ + return -ENXIO; +} + +static int +hpsa_sas_phy_reset(struct sas_phy *phy, int hard_reset) +{ + return 0; +} + +static int +hpsa_sas_phy_enable(struct sas_phy *phy, int enable) +{ + return 0; +} + +static int +hpsa_sas_phy_setup(struct sas_phy *phy) +{ + return 0; +} + +static void +hpsa_sas_phy_release(struct sas_phy *phy) +{ +} + +static int +hpsa_sas_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates) +{ + return -EINVAL; +} + +/* SMP = Serial Management Protocol */ +static int +hpsa_sas_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy, +struct request *req) +{ + return -EINVAL; +} + +static struct sas_function_template hpsa_sas_transport_functions = { + .get_linkerrors = hpsa_sas_get_linkerrors, + .get_enclosure_identifier = hpsa_sas_get_enclosure_identifier, + .get_bay_identifier = hpsa_sas_get_bay_identifier, + .phy_reset = hpsa_sas_phy_reset, + .phy_enable = hpsa_sas_phy_enable, + .phy_setup = hpsa_sas_phy_setup, + .phy_release = hpsa_sas_phy_release, + .set_phy_speed = hpsa_sas_phy_speed, + .smp_handler = hpsa_sas_smp_handler, +}; + /* * This is it. Register the PCI driver information for the cards we control * the OS will call our registered routines when it finds one of our cards. */ static int __init hpsa_init(void) { - return pci_register_driver(&hpsa_pci_driver); + int rc; + + hpsa_sas_transport_template = + sas_attach_transport(&hpsa_sas_transport_functions); + if (!hpsa_sas_transport_template) + return -ENODEV; + + rc = pci_register_driver(&hpsa_pci_driver); + + if (rc) + sas_release_transport(hpsa_sas_transport_template); + + return rc; } static void __exit hpsa_cleanup(void) { pci_unregister_driver(&hpsa_pci_driver); + sas_release_transport(hpsa_sas_transport_template); } static void __attribute__((unused)) verify_offsets(void) |