diff options
Diffstat (limited to 'qemu/roms/ipxe/src/drivers/infiniband/arbel.c')
| -rw-r--r-- | qemu/roms/ipxe/src/drivers/infiniband/arbel.c | 3106 |
1 files changed, 0 insertions, 3106 deletions
diff --git a/qemu/roms/ipxe/src/drivers/infiniband/arbel.c b/qemu/roms/ipxe/src/drivers/infiniband/arbel.c deleted file mode 100644 index 2a6c32dec..000000000 --- a/qemu/roms/ipxe/src/drivers/infiniband/arbel.c +++ /dev/null @@ -1,3106 +0,0 @@ -/* - * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>. - * - * Based in part upon the original driver by Mellanox Technologies - * Ltd. Portions may be Copyright (c) Mellanox Technologies Ltd. - * - * 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 the Free Software Foundation; either version 2 of the - * License, or any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -#include <stdint.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <strings.h> -#include <unistd.h> -#include <errno.h> -#include <byteswap.h> -#include <ipxe/io.h> -#include <ipxe/pci.h> -#include <ipxe/pcibackup.h> -#include <ipxe/malloc.h> -#include <ipxe/umalloc.h> -#include <ipxe/iobuf.h> -#include <ipxe/netdevice.h> -#include <ipxe/infiniband.h> -#include <ipxe/ib_smc.h> -#include "arbel.h" - -/** - * @file - * - * Mellanox Arbel Infiniband HCA - * - */ - -/*************************************************************************** - * - * Queue number allocation - * - *************************************************************************** - */ - -/** - * Allocate offset within usage bitmask - * - * @v bits Usage bitmask - * @v bits_len Length of usage bitmask - * @ret bit First free bit within bitmask, or negative error - */ -static int arbel_bitmask_alloc ( arbel_bitmask_t *bits, - unsigned int bits_len ) { - unsigned int bit = 0; - arbel_bitmask_t mask = 1; - - while ( bit < bits_len ) { - if ( ( mask & *bits ) == 0 ) { - *bits |= mask; - return bit; - } - bit++; - mask = ( mask << 1 ) | ( mask >> ( 8 * sizeof ( mask ) - 1 ) ); - if ( mask == 1 ) - bits++; - } - return -ENFILE; -} - -/** - * Free offset within usage bitmask - * - * @v bits Usage bitmask - * @v bit Bit within bitmask - */ -static void arbel_bitmask_free ( arbel_bitmask_t *bits, int bit ) { - arbel_bitmask_t mask; - - mask = ( 1 << ( bit % ( 8 * sizeof ( mask ) ) ) ); - bits += ( bit / ( 8 * sizeof ( mask ) ) ); - *bits &= ~mask; -} - -/*************************************************************************** - * - * HCA commands - * - *************************************************************************** - */ - -/** - * Wait for Arbel command completion - * - * @v arbel Arbel device - * @ret rc Return status code - */ -static int arbel_cmd_wait ( struct arbel *arbel, - struct arbelprm_hca_command_register *hcr ) { - unsigned int wait; - - for ( wait = ARBEL_HCR_MAX_WAIT_MS ; wait ; wait-- ) { - hcr->u.dwords[6] = - readl ( arbel->config + ARBEL_HCR_REG ( 6 ) ); - if ( MLX_GET ( hcr, go ) == 0 ) - return 0; - mdelay ( 1 ); - } - return -EBUSY; -} - -/** - * Issue HCA command - * - * @v arbel Arbel device - * @v command Command opcode, flags and input/output lengths - * @v op_mod Opcode modifier (0 if no modifier applicable) - * @v in Input parameters - * @v in_mod Input modifier (0 if no modifier applicable) - * @v out Output parameters - * @ret rc Return status code - */ -static int arbel_cmd ( struct arbel *arbel, unsigned long command, - unsigned int op_mod, const void *in, - unsigned int in_mod, void *out ) { - struct arbelprm_hca_command_register hcr; - unsigned int opcode = ARBEL_HCR_OPCODE ( command ); - size_t in_len = ARBEL_HCR_IN_LEN ( command ); - size_t out_len = ARBEL_HCR_OUT_LEN ( command ); - void *in_buffer; - void *out_buffer; - unsigned int status; - unsigned int i; - int rc; - - assert ( in_len <= ARBEL_MBOX_SIZE ); - assert ( out_len <= ARBEL_MBOX_SIZE ); - - DBGC2 ( arbel, "Arbel %p command %02x in %zx%s out %zx%s\n", - arbel, opcode, in_len, - ( ( command & ARBEL_HCR_IN_MBOX ) ? "(mbox)" : "" ), out_len, - ( ( command & ARBEL_HCR_OUT_MBOX ) ? "(mbox)" : "" ) ); - - /* Check that HCR is free */ - if ( ( rc = arbel_cmd_wait ( arbel, &hcr ) ) != 0 ) { - DBGC ( arbel, "Arbel %p command interface locked\n", arbel ); - return rc; - } - - /* Prepare HCR */ - memset ( &hcr, 0, sizeof ( hcr ) ); - in_buffer = &hcr.u.dwords[0]; - if ( in_len && ( command & ARBEL_HCR_IN_MBOX ) ) { - in_buffer = arbel->mailbox_in; - MLX_FILL_H ( &hcr, 0, in_param_h, virt_to_bus ( in_buffer ) ); - MLX_FILL_1 ( &hcr, 1, in_param_l, virt_to_bus ( in_buffer ) ); - } - memcpy ( in_buffer, in, in_len ); - MLX_FILL_1 ( &hcr, 2, input_modifier, in_mod ); - out_buffer = &hcr.u.dwords[3]; - if ( out_len && ( command & ARBEL_HCR_OUT_MBOX ) ) { - out_buffer = arbel->mailbox_out; - MLX_FILL_H ( &hcr, 3, out_param_h, - virt_to_bus ( out_buffer ) ); - MLX_FILL_1 ( &hcr, 4, out_param_l, - virt_to_bus ( out_buffer ) ); - } - MLX_FILL_3 ( &hcr, 6, - opcode, opcode, - opcode_modifier, op_mod, - go, 1 ); - DBGC ( arbel, "Arbel %p issuing command %04x\n", arbel, opcode ); - DBGC2_HDA ( arbel, virt_to_phys ( arbel->config + ARBEL_HCR_BASE ), - &hcr, sizeof ( hcr ) ); - if ( in_len && ( command & ARBEL_HCR_IN_MBOX ) ) { - DBGC2 ( arbel, "Input mailbox:\n" ); - DBGC2_HDA ( arbel, virt_to_phys ( in_buffer ), in_buffer, - ( ( in_len < 512 ) ? in_len : 512 ) ); - } - - /* Issue command */ - for ( i = 0 ; i < ( sizeof ( hcr ) / sizeof ( hcr.u.dwords[0] ) ) ; - i++ ) { - writel ( hcr.u.dwords[i], - arbel->config + ARBEL_HCR_REG ( i ) ); - barrier(); - } - - /* Wait for command completion */ - if ( ( rc = arbel_cmd_wait ( arbel, &hcr ) ) != 0 ) { - DBGC ( arbel, "Arbel %p timed out waiting for command:\n", - arbel ); - DBGC_HD ( arbel, &hcr, sizeof ( hcr ) ); - return rc; - } - - /* Check command status */ - status = MLX_GET ( &hcr, status ); - if ( status != 0 ) { - DBGC ( arbel, "Arbel %p command failed with status %02x:\n", - arbel, status ); - DBGC_HD ( arbel, &hcr, sizeof ( hcr ) ); - return -EIO; - } - - /* Read output parameters, if any */ - hcr.u.dwords[3] = readl ( arbel->config + ARBEL_HCR_REG ( 3 ) ); - hcr.u.dwords[4] = readl ( arbel->config + ARBEL_HCR_REG ( 4 ) ); - memcpy ( out, out_buffer, out_len ); - if ( out_len ) { - DBGC2 ( arbel, "Output%s:\n", - ( command & ARBEL_HCR_OUT_MBOX ) ? " mailbox" : "" ); - DBGC2_HDA ( arbel, virt_to_phys ( out_buffer ), out_buffer, - ( ( out_len < 512 ) ? out_len : 512 ) ); - } - - return 0; -} - -static inline int -arbel_cmd_query_dev_lim ( struct arbel *arbel, - struct arbelprm_query_dev_lim *dev_lim ) { - return arbel_cmd ( arbel, - ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_DEV_LIM, - 1, sizeof ( *dev_lim ) ), - 0, NULL, 0, dev_lim ); -} - -static inline int -arbel_cmd_query_fw ( struct arbel *arbel, struct arbelprm_query_fw *fw ) { - return arbel_cmd ( arbel, - ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_FW, - 1, sizeof ( *fw ) ), - 0, NULL, 0, fw ); -} - -static inline int -arbel_cmd_init_hca ( struct arbel *arbel, - const struct arbelprm_init_hca *init_hca ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT_HCA, - 1, sizeof ( *init_hca ) ), - 0, init_hca, 0, NULL ); -} - -static inline int -arbel_cmd_close_hca ( struct arbel *arbel ) { - return arbel_cmd ( arbel, - ARBEL_HCR_VOID_CMD ( ARBEL_HCR_CLOSE_HCA ), - 0, NULL, 0, NULL ); -} - -static inline int -arbel_cmd_init_ib ( struct arbel *arbel, unsigned int port, - const struct arbelprm_init_ib *init_ib ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT_IB, - 1, sizeof ( *init_ib ) ), - 0, init_ib, port, NULL ); -} - -static inline int -arbel_cmd_close_ib ( struct arbel *arbel, unsigned int port ) { - return arbel_cmd ( arbel, - ARBEL_HCR_VOID_CMD ( ARBEL_HCR_CLOSE_IB ), - 0, NULL, port, NULL ); -} - -static inline int -arbel_cmd_sw2hw_mpt ( struct arbel *arbel, unsigned int index, - const struct arbelprm_mpt *mpt ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_MPT, - 1, sizeof ( *mpt ) ), - 0, mpt, index, NULL ); -} - -static inline int -arbel_cmd_map_eq ( struct arbel *arbel, unsigned long index_map, - const struct arbelprm_event_mask *mask ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_EQ, - 0, sizeof ( *mask ) ), - 0, mask, index_map, NULL ); -} - -static inline int -arbel_cmd_sw2hw_eq ( struct arbel *arbel, unsigned int index, - const struct arbelprm_eqc *eqctx ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_EQ, - 1, sizeof ( *eqctx ) ), - 0, eqctx, index, NULL ); -} - -static inline int -arbel_cmd_hw2sw_eq ( struct arbel *arbel, unsigned int index, - struct arbelprm_eqc *eqctx ) { - return arbel_cmd ( arbel, - ARBEL_HCR_OUT_CMD ( ARBEL_HCR_HW2SW_EQ, - 1, sizeof ( *eqctx ) ), - 1, NULL, index, eqctx ); -} - -static inline int -arbel_cmd_sw2hw_cq ( struct arbel *arbel, unsigned long cqn, - const struct arbelprm_completion_queue_context *cqctx ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_SW2HW_CQ, - 1, sizeof ( *cqctx ) ), - 0, cqctx, cqn, NULL ); -} - -static inline int -arbel_cmd_hw2sw_cq ( struct arbel *arbel, unsigned long cqn, - struct arbelprm_completion_queue_context *cqctx) { - return arbel_cmd ( arbel, - ARBEL_HCR_OUT_CMD ( ARBEL_HCR_HW2SW_CQ, - 1, sizeof ( *cqctx ) ), - 0, NULL, cqn, cqctx ); -} - -static inline int -arbel_cmd_query_cq ( struct arbel *arbel, unsigned long cqn, - struct arbelprm_completion_queue_context *cqctx ) { - return arbel_cmd ( arbel, - ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_CQ, - 1, sizeof ( *cqctx ) ), - 0, NULL, cqn, cqctx ); -} - -static inline int -arbel_cmd_rst2init_qpee ( struct arbel *arbel, unsigned long qpn, - const struct arbelprm_qp_ee_state_transitions *ctx ){ - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_RST2INIT_QPEE, - 1, sizeof ( *ctx ) ), - 0, ctx, qpn, NULL ); -} - -static inline int -arbel_cmd_init2rtr_qpee ( struct arbel *arbel, unsigned long qpn, - const struct arbelprm_qp_ee_state_transitions *ctx ){ - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_INIT2RTR_QPEE, - 1, sizeof ( *ctx ) ), - 0, ctx, qpn, NULL ); -} - -static inline int -arbel_cmd_rtr2rts_qpee ( struct arbel *arbel, unsigned long qpn, - const struct arbelprm_qp_ee_state_transitions *ctx ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_RTR2RTS_QPEE, - 1, sizeof ( *ctx ) ), - 0, ctx, qpn, NULL ); -} - -static inline int -arbel_cmd_rts2rts_qpee ( struct arbel *arbel, unsigned long qpn, - const struct arbelprm_qp_ee_state_transitions *ctx ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_RTS2RTS_QPEE, - 1, sizeof ( *ctx ) ), - 0, ctx, qpn, NULL ); -} - -static inline int -arbel_cmd_2rst_qpee ( struct arbel *arbel, unsigned long qpn ) { - return arbel_cmd ( arbel, - ARBEL_HCR_VOID_CMD ( ARBEL_HCR_2RST_QPEE ), - 0x03, NULL, qpn, NULL ); -} - -static inline int -arbel_cmd_query_qpee ( struct arbel *arbel, unsigned long qpn, - struct arbelprm_qp_ee_state_transitions *ctx ) { - return arbel_cmd ( arbel, - ARBEL_HCR_OUT_CMD ( ARBEL_HCR_QUERY_QPEE, - 1, sizeof ( *ctx ) ), - 0, NULL, qpn, ctx ); -} - -static inline int -arbel_cmd_conf_special_qp ( struct arbel *arbel, unsigned int qp_type, - unsigned long base_qpn ) { - return arbel_cmd ( arbel, - ARBEL_HCR_VOID_CMD ( ARBEL_HCR_CONF_SPECIAL_QP ), - qp_type, NULL, base_qpn, NULL ); -} - -static inline int -arbel_cmd_mad_ifc ( struct arbel *arbel, unsigned int port, - union arbelprm_mad *mad ) { - return arbel_cmd ( arbel, - ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_MAD_IFC, - 1, sizeof ( *mad ), - 1, sizeof ( *mad ) ), - 0x03, mad, port, mad ); -} - -static inline int -arbel_cmd_read_mgm ( struct arbel *arbel, unsigned int index, - struct arbelprm_mgm_entry *mgm ) { - return arbel_cmd ( arbel, - ARBEL_HCR_OUT_CMD ( ARBEL_HCR_READ_MGM, - 1, sizeof ( *mgm ) ), - 0, NULL, index, mgm ); -} - -static inline int -arbel_cmd_write_mgm ( struct arbel *arbel, unsigned int index, - const struct arbelprm_mgm_entry *mgm ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_WRITE_MGM, - 1, sizeof ( *mgm ) ), - 0, mgm, index, NULL ); -} - -static inline int -arbel_cmd_mgid_hash ( struct arbel *arbel, const union ib_gid *gid, - struct arbelprm_mgm_hash *hash ) { - return arbel_cmd ( arbel, - ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_MGID_HASH, - 1, sizeof ( *gid ), - 0, sizeof ( *hash ) ), - 0, gid, 0, hash ); -} - -static inline int -arbel_cmd_run_fw ( struct arbel *arbel ) { - return arbel_cmd ( arbel, - ARBEL_HCR_VOID_CMD ( ARBEL_HCR_RUN_FW ), - 0, NULL, 0, NULL ); -} - -static inline int -arbel_cmd_disable_lam ( struct arbel *arbel ) { - return arbel_cmd ( arbel, - ARBEL_HCR_VOID_CMD ( ARBEL_HCR_DISABLE_LAM ), - 0, NULL, 0, NULL ); -} - -static inline int -arbel_cmd_enable_lam ( struct arbel *arbel, struct arbelprm_access_lam *lam ) { - return arbel_cmd ( arbel, - ARBEL_HCR_OUT_CMD ( ARBEL_HCR_ENABLE_LAM, - 1, sizeof ( *lam ) ), - 1, NULL, 0, lam ); -} - -static inline int -arbel_cmd_unmap_icm ( struct arbel *arbel, unsigned int page_count, - const struct arbelprm_scalar_parameter *offset ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_UNMAP_ICM, 0, - sizeof ( *offset ) ), - 0, offset, page_count, NULL ); -} - -static inline int -arbel_cmd_map_icm ( struct arbel *arbel, - const struct arbelprm_virtual_physical_mapping *map ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_ICM, - 1, sizeof ( *map ) ), - 0, map, 1, NULL ); -} - -static inline int -arbel_cmd_unmap_icm_aux ( struct arbel *arbel ) { - return arbel_cmd ( arbel, - ARBEL_HCR_VOID_CMD ( ARBEL_HCR_UNMAP_ICM_AUX ), - 0, NULL, 0, NULL ); -} - -static inline int -arbel_cmd_map_icm_aux ( struct arbel *arbel, - const struct arbelprm_virtual_physical_mapping *map ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_ICM_AUX, - 1, sizeof ( *map ) ), - 0, map, 1, NULL ); -} - -static inline int -arbel_cmd_set_icm_size ( struct arbel *arbel, - const struct arbelprm_scalar_parameter *icm_size, - struct arbelprm_scalar_parameter *icm_aux_size ) { - return arbel_cmd ( arbel, - ARBEL_HCR_INOUT_CMD ( ARBEL_HCR_SET_ICM_SIZE, - 0, sizeof ( *icm_size ), - 0, sizeof ( *icm_aux_size ) ), - 0, icm_size, 0, icm_aux_size ); -} - -static inline int -arbel_cmd_unmap_fa ( struct arbel *arbel ) { - return arbel_cmd ( arbel, - ARBEL_HCR_VOID_CMD ( ARBEL_HCR_UNMAP_FA ), - 0, NULL, 0, NULL ); -} - -static inline int -arbel_cmd_map_fa ( struct arbel *arbel, - const struct arbelprm_virtual_physical_mapping *map ) { - return arbel_cmd ( arbel, - ARBEL_HCR_IN_CMD ( ARBEL_HCR_MAP_FA, - 1, sizeof ( *map ) ), - 0, map, 1, NULL ); -} - -/*************************************************************************** - * - * MAD operations - * - *************************************************************************** - */ - -/** - * Issue management datagram - * - * @v ibdev Infiniband device - * @v mad Management datagram - * @ret rc Return status code - */ -static int arbel_mad ( struct ib_device *ibdev, union ib_mad *mad ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - union arbelprm_mad mad_ifc; - int rc; - - linker_assert ( sizeof ( *mad ) == sizeof ( mad_ifc.mad ), - mad_size_mismatch ); - - /* Copy in request packet */ - memcpy ( &mad_ifc.mad, mad, sizeof ( mad_ifc.mad ) ); - - /* Issue MAD */ - if ( ( rc = arbel_cmd_mad_ifc ( arbel, ibdev->port, - &mad_ifc ) ) != 0 ) { - DBGC ( arbel, "Arbel %p port %d could not issue MAD IFC: %s\n", - arbel, ibdev->port, strerror ( rc ) ); - return rc; - } - - /* Copy out reply packet */ - memcpy ( mad, &mad_ifc.mad, sizeof ( *mad ) ); - - if ( mad->hdr.status != 0 ) { - DBGC ( arbel, "Arbel %p port %d MAD IFC status %04x\n", - arbel, ibdev->port, ntohs ( mad->hdr.status ) ); - return -EIO; - } - return 0; -} - -/*************************************************************************** - * - * Completion queue operations - * - *************************************************************************** - */ - -/** - * Dump completion queue context (for debugging only) - * - * @v arbel Arbel device - * @v cq Completion queue - * @ret rc Return status code - */ -static __attribute__ (( unused )) int -arbel_dump_cqctx ( struct arbel *arbel, struct ib_completion_queue *cq ) { - struct arbelprm_completion_queue_context cqctx; - int rc; - - memset ( &cqctx, 0, sizeof ( cqctx ) ); - if ( ( rc = arbel_cmd_query_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) { - DBGC ( arbel, "Arbel %p CQN %#lx QUERY_CQ failed: %s\n", - arbel, cq->cqn, strerror ( rc ) ); - return rc; - } - DBGC ( arbel, "Arbel %p CQN %#lx context:\n", arbel, cq->cqn ); - DBGC_HDA ( arbel, 0, &cqctx, sizeof ( cqctx ) ); - - return 0; -} - -/** - * Create completion queue - * - * @v ibdev Infiniband device - * @v cq Completion queue - * @ret rc Return status code - */ -static int arbel_create_cq ( struct ib_device *ibdev, - struct ib_completion_queue *cq ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_completion_queue *arbel_cq; - struct arbelprm_completion_queue_context cqctx; - struct arbelprm_cq_ci_db_record *ci_db_rec; - struct arbelprm_cq_arm_db_record *arm_db_rec; - int cqn_offset; - unsigned int i; - int rc; - - /* Find a free completion queue number */ - cqn_offset = arbel_bitmask_alloc ( arbel->cq_inuse, ARBEL_MAX_CQS ); - if ( cqn_offset < 0 ) { - DBGC ( arbel, "Arbel %p out of completion queues\n", arbel ); - rc = cqn_offset; - goto err_cqn_offset; - } - cq->cqn = ( arbel->limits.reserved_cqs + cqn_offset ); - - /* Allocate control structures */ - arbel_cq = zalloc ( sizeof ( *arbel_cq ) ); - if ( ! arbel_cq ) { - rc = -ENOMEM; - goto err_arbel_cq; - } - arbel_cq->ci_doorbell_idx = arbel_cq_ci_doorbell_idx ( arbel, cq ); - arbel_cq->arm_doorbell_idx = arbel_cq_arm_doorbell_idx ( arbel, cq ); - - /* Allocate completion queue itself */ - arbel_cq->cqe_size = ( cq->num_cqes * sizeof ( arbel_cq->cqe[0] ) ); - arbel_cq->cqe = malloc_dma ( arbel_cq->cqe_size, - sizeof ( arbel_cq->cqe[0] ) ); - if ( ! arbel_cq->cqe ) { - rc = -ENOMEM; - goto err_cqe; - } - memset ( arbel_cq->cqe, 0, arbel_cq->cqe_size ); - for ( i = 0 ; i < cq->num_cqes ; i++ ) { - MLX_FILL_1 ( &arbel_cq->cqe[i].normal, 7, owner, 1 ); - } - barrier(); - - /* Initialise doorbell records */ - ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci; - MLX_FILL_1 ( ci_db_rec, 0, counter, 0 ); - MLX_FILL_2 ( ci_db_rec, 1, - res, ARBEL_UAR_RES_CQ_CI, - cq_number, cq->cqn ); - arm_db_rec = &arbel->db_rec[arbel_cq->arm_doorbell_idx].cq_arm; - MLX_FILL_1 ( arm_db_rec, 0, counter, 0 ); - MLX_FILL_2 ( arm_db_rec, 1, - res, ARBEL_UAR_RES_CQ_ARM, - cq_number, cq->cqn ); - - /* Hand queue over to hardware */ - memset ( &cqctx, 0, sizeof ( cqctx ) ); - MLX_FILL_1 ( &cqctx, 0, st, 0xa /* "Event fired" */ ); - MLX_FILL_H ( &cqctx, 1, start_address_h, - virt_to_bus ( arbel_cq->cqe ) ); - MLX_FILL_1 ( &cqctx, 2, start_address_l, - virt_to_bus ( arbel_cq->cqe ) ); - MLX_FILL_2 ( &cqctx, 3, - usr_page, arbel->limits.reserved_uars, - log_cq_size, fls ( cq->num_cqes - 1 ) ); - MLX_FILL_1 ( &cqctx, 5, c_eqn, arbel->eq.eqn ); - MLX_FILL_1 ( &cqctx, 6, pd, ARBEL_GLOBAL_PD ); - MLX_FILL_1 ( &cqctx, 7, l_key, arbel->lkey ); - MLX_FILL_1 ( &cqctx, 12, cqn, cq->cqn ); - MLX_FILL_1 ( &cqctx, 13, - cq_ci_db_record, arbel_cq->ci_doorbell_idx ); - MLX_FILL_1 ( &cqctx, 14, - cq_state_db_record, arbel_cq->arm_doorbell_idx ); - if ( ( rc = arbel_cmd_sw2hw_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) { - DBGC ( arbel, "Arbel %p CQN %#lx SW2HW_CQ failed: %s\n", - arbel, cq->cqn, strerror ( rc ) ); - goto err_sw2hw_cq; - } - - DBGC ( arbel, "Arbel %p CQN %#lx ring [%08lx,%08lx), doorbell %08lx\n", - arbel, cq->cqn, virt_to_phys ( arbel_cq->cqe ), - ( virt_to_phys ( arbel_cq->cqe ) + arbel_cq->cqe_size ), - virt_to_phys ( ci_db_rec ) ); - ib_cq_set_drvdata ( cq, arbel_cq ); - return 0; - - err_sw2hw_cq: - MLX_FILL_1 ( ci_db_rec, 1, res, ARBEL_UAR_RES_NONE ); - MLX_FILL_1 ( arm_db_rec, 1, res, ARBEL_UAR_RES_NONE ); - free_dma ( arbel_cq->cqe, arbel_cq->cqe_size ); - err_cqe: - free ( arbel_cq ); - err_arbel_cq: - arbel_bitmask_free ( arbel->cq_inuse, cqn_offset ); - err_cqn_offset: - return rc; -} - -/** - * Destroy completion queue - * - * @v ibdev Infiniband device - * @v cq Completion queue - */ -static void arbel_destroy_cq ( struct ib_device *ibdev, - struct ib_completion_queue *cq ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_completion_queue *arbel_cq = ib_cq_get_drvdata ( cq ); - struct arbelprm_completion_queue_context cqctx; - struct arbelprm_cq_ci_db_record *ci_db_rec; - struct arbelprm_cq_arm_db_record *arm_db_rec; - int cqn_offset; - int rc; - - /* Take ownership back from hardware */ - if ( ( rc = arbel_cmd_hw2sw_cq ( arbel, cq->cqn, &cqctx ) ) != 0 ) { - DBGC ( arbel, "Arbel %p CQN %#lx FATAL HW2SW_CQ failed: " - "%s\n", arbel, cq->cqn, strerror ( rc ) ); - /* Leak memory and return; at least we avoid corruption */ - return; - } - - /* Clear doorbell records */ - ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci; - arm_db_rec = &arbel->db_rec[arbel_cq->arm_doorbell_idx].cq_arm; - MLX_FILL_1 ( ci_db_rec, 1, res, ARBEL_UAR_RES_NONE ); - MLX_FILL_1 ( arm_db_rec, 1, res, ARBEL_UAR_RES_NONE ); - - /* Free memory */ - free_dma ( arbel_cq->cqe, arbel_cq->cqe_size ); - free ( arbel_cq ); - - /* Mark queue number as free */ - cqn_offset = ( cq->cqn - arbel->limits.reserved_cqs ); - arbel_bitmask_free ( arbel->cq_inuse, cqn_offset ); - - ib_cq_set_drvdata ( cq, NULL ); -} - -/*************************************************************************** - * - * Queue pair operations - * - *************************************************************************** - */ - -/** - * Assign queue pair number - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @ret rc Return status code - */ -static int arbel_alloc_qpn ( struct ib_device *ibdev, - struct ib_queue_pair *qp ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - unsigned int port_offset; - int qpn_offset; - - /* Calculate queue pair number */ - port_offset = ( ibdev->port - ARBEL_PORT_BASE ); - - switch ( qp->type ) { - case IB_QPT_SMI: - qp->qpn = ( arbel->special_qpn_base + port_offset ); - return 0; - case IB_QPT_GSI: - qp->qpn = ( arbel->special_qpn_base + 2 + port_offset ); - return 0; - case IB_QPT_UD: - case IB_QPT_RC: - /* Find a free queue pair number */ - qpn_offset = arbel_bitmask_alloc ( arbel->qp_inuse, - ARBEL_MAX_QPS ); - if ( qpn_offset < 0 ) { - DBGC ( arbel, "Arbel %p out of queue pairs\n", - arbel ); - return qpn_offset; - } - qp->qpn = ( ( random() & ARBEL_QPN_RANDOM_MASK ) | - ( arbel->qpn_base + qpn_offset ) ); - return 0; - default: - DBGC ( arbel, "Arbel %p unsupported QP type %d\n", - arbel, qp->type ); - return -ENOTSUP; - } -} - -/** - * Free queue pair number - * - * @v ibdev Infiniband device - * @v qp Queue pair - */ -static void arbel_free_qpn ( struct ib_device *ibdev, - struct ib_queue_pair *qp ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - int qpn_offset; - - qpn_offset = ( ( qp->qpn & ~ARBEL_QPN_RANDOM_MASK ) - arbel->qpn_base ); - if ( qpn_offset >= 0 ) - arbel_bitmask_free ( arbel->qp_inuse, qpn_offset ); -} - -/** - * Calculate transmission rate - * - * @v av Address vector - * @ret arbel_rate Arbel rate - */ -static unsigned int arbel_rate ( struct ib_address_vector *av ) { - return ( ( ( av->rate >= IB_RATE_2_5 ) && ( av->rate <= IB_RATE_120 ) ) - ? ( av->rate + 5 ) : 0 ); -} - -/** Queue pair transport service type map */ -static uint8_t arbel_qp_st[] = { - [IB_QPT_SMI] = ARBEL_ST_MLX, - [IB_QPT_GSI] = ARBEL_ST_MLX, - [IB_QPT_UD] = ARBEL_ST_UD, - [IB_QPT_RC] = ARBEL_ST_RC, -}; - -/** - * Dump queue pair context (for debugging only) - * - * @v arbel Arbel device - * @v qp Queue pair - * @ret rc Return status code - */ -static __attribute__ (( unused )) int -arbel_dump_qpctx ( struct arbel *arbel, struct ib_queue_pair *qp ) { - struct arbelprm_qp_ee_state_transitions qpctx; - int rc; - - memset ( &qpctx, 0, sizeof ( qpctx ) ); - if ( ( rc = arbel_cmd_query_qpee ( arbel, qp->qpn, &qpctx ) ) != 0 ) { - DBGC ( arbel, "Arbel %p QPN %#lx QUERY_QPEE failed: %s\n", - arbel, qp->qpn, strerror ( rc ) ); - return rc; - } - DBGC ( arbel, "Arbel %p QPN %#lx context:\n", arbel, qp->qpn ); - DBGC_HDA ( arbel, 0, &qpctx.u.dwords[2], ( sizeof ( qpctx ) - 8 ) ); - - return 0; -} - -/** - * Create send work queue - * - * @v arbel_send_wq Send work queue - * @v num_wqes Number of work queue entries - * @ret rc Return status code - */ -static int arbel_create_send_wq ( struct arbel_send_work_queue *arbel_send_wq, - unsigned int num_wqes ) { - union arbel_send_wqe *wqe; - union arbel_send_wqe *next_wqe; - unsigned int wqe_idx_mask; - unsigned int i; - - /* Allocate work queue */ - arbel_send_wq->wqe_size = ( num_wqes * - sizeof ( arbel_send_wq->wqe[0] ) ); - arbel_send_wq->wqe = malloc_dma ( arbel_send_wq->wqe_size, - sizeof ( arbel_send_wq->wqe[0] ) ); - if ( ! arbel_send_wq->wqe ) - return -ENOMEM; - memset ( arbel_send_wq->wqe, 0, arbel_send_wq->wqe_size ); - - /* Link work queue entries */ - wqe_idx_mask = ( num_wqes - 1 ); - for ( i = 0 ; i < num_wqes ; i++ ) { - wqe = &arbel_send_wq->wqe[i]; - next_wqe = &arbel_send_wq->wqe[ ( i + 1 ) & wqe_idx_mask ]; - MLX_FILL_1 ( &wqe->next, 0, nda_31_6, - ( virt_to_bus ( next_wqe ) >> 6 ) ); - MLX_FILL_1 ( &wqe->next, 1, always1, 1 ); - } - - return 0; -} - -/** - * Create receive work queue - * - * @v arbel_recv_wq Receive work queue - * @v num_wqes Number of work queue entries - * @ret rc Return status code - */ -static int arbel_create_recv_wq ( struct arbel_recv_work_queue *arbel_recv_wq, - unsigned int num_wqes ) { - struct arbelprm_recv_wqe *wqe; - struct arbelprm_recv_wqe *next_wqe; - unsigned int wqe_idx_mask; - size_t nds; - unsigned int i; - unsigned int j; - - /* Allocate work queue */ - arbel_recv_wq->wqe_size = ( num_wqes * - sizeof ( arbel_recv_wq->wqe[0] ) ); - arbel_recv_wq->wqe = malloc_dma ( arbel_recv_wq->wqe_size, - sizeof ( arbel_recv_wq->wqe[0] ) ); - if ( ! arbel_recv_wq->wqe ) - return -ENOMEM; - memset ( arbel_recv_wq->wqe, 0, arbel_recv_wq->wqe_size ); - - /* Link work queue entries */ - wqe_idx_mask = ( num_wqes - 1 ); - nds = ( ( offsetof ( typeof ( *wqe ), data ) + - sizeof ( wqe->data[0] ) ) >> 4 ); - for ( i = 0 ; i < num_wqes ; i++ ) { - wqe = &arbel_recv_wq->wqe[i].recv; - next_wqe = &arbel_recv_wq->wqe[( i + 1 ) & wqe_idx_mask].recv; - MLX_FILL_1 ( &wqe->next, 0, nda_31_6, - ( virt_to_bus ( next_wqe ) >> 6 ) ); - MLX_FILL_1 ( &wqe->next, 1, nds, nds ); - for ( j = 0 ; ( ( ( void * ) &wqe->data[j] ) < - ( ( void * ) ( wqe + 1 ) ) ) ; j++ ) { - MLX_FILL_1 ( &wqe->data[j], 1, - l_key, ARBEL_INVALID_LKEY ); - } - } - - return 0; -} - -/** - * Create queue pair - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @ret rc Return status code - */ -static int arbel_create_qp ( struct ib_device *ibdev, - struct ib_queue_pair *qp ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_queue_pair *arbel_qp; - struct arbelprm_qp_ee_state_transitions qpctx; - struct arbelprm_qp_db_record *send_db_rec; - struct arbelprm_qp_db_record *recv_db_rec; - physaddr_t send_wqe_base_adr; - physaddr_t recv_wqe_base_adr; - physaddr_t wqe_base_adr; - int rc; - - /* Warn about dysfunctional code - * - * Arbel seems to crash the system as soon as the first send - * WQE completes on an RC queue pair. (NOPs complete - * successfully, so this is a problem specific to the work - * queue rather than the completion queue.) The cause of this - * problem has remained unknown for over a year. Patches to - * fix this are welcome. - */ - if ( qp->type == IB_QPT_RC ) - DBG ( "*** WARNING: Arbel RC support is non-functional ***\n" ); - - /* Calculate queue pair number */ - if ( ( rc = arbel_alloc_qpn ( ibdev, qp ) ) != 0 ) - goto err_alloc_qpn; - - /* Allocate control structures */ - arbel_qp = zalloc ( sizeof ( *arbel_qp ) ); - if ( ! arbel_qp ) { - rc = -ENOMEM; - goto err_arbel_qp; - } - arbel_qp->send.doorbell_idx = arbel_send_doorbell_idx ( arbel, qp ); - arbel_qp->recv.doorbell_idx = arbel_recv_doorbell_idx ( arbel, qp ); - - /* Create send and receive work queues */ - if ( ( rc = arbel_create_send_wq ( &arbel_qp->send, - qp->send.num_wqes ) ) != 0 ) - goto err_create_send_wq; - if ( ( rc = arbel_create_recv_wq ( &arbel_qp->recv, - qp->recv.num_wqes ) ) != 0 ) - goto err_create_recv_wq; - - /* Send and receive work queue entries must be within the same 4GB */ - send_wqe_base_adr = virt_to_bus ( arbel_qp->send.wqe ); - recv_wqe_base_adr = virt_to_bus ( arbel_qp->recv.wqe ); - if ( ( sizeof ( physaddr_t ) > sizeof ( uint32_t ) ) && - ( ( ( ( uint64_t ) send_wqe_base_adr ) >> 32 ) != - ( ( ( uint64_t ) recv_wqe_base_adr ) >> 32 ) ) ) { - DBGC ( arbel, "Arbel %p QPN %#lx cannot support send %08lx " - "recv %08lx\n", arbel, qp->qpn, - send_wqe_base_adr, recv_wqe_base_adr ); - rc = -ENOTSUP; - goto err_unsupported_address_split; - } - wqe_base_adr = send_wqe_base_adr; - - /* Initialise doorbell records */ - send_db_rec = &arbel->db_rec[arbel_qp->send.doorbell_idx].qp; - MLX_FILL_1 ( send_db_rec, 0, counter, 0 ); - MLX_FILL_2 ( send_db_rec, 1, - res, ARBEL_UAR_RES_SQ, - qp_number, qp->qpn ); - recv_db_rec = &arbel->db_rec[arbel_qp->recv.doorbell_idx].qp; - MLX_FILL_1 ( recv_db_rec, 0, counter, 0 ); - MLX_FILL_2 ( recv_db_rec, 1, - res, ARBEL_UAR_RES_RQ, - qp_number, qp->qpn ); - - /* Transition queue to INIT state */ - memset ( &qpctx, 0, sizeof ( qpctx ) ); - MLX_FILL_3 ( &qpctx, 2, - qpc_eec_data.de, 1, - qpc_eec_data.pm_state, ARBEL_PM_STATE_MIGRATED, - qpc_eec_data.st, arbel_qp_st[qp->type] ); - MLX_FILL_4 ( &qpctx, 4, - qpc_eec_data.log_rq_size, fls ( qp->recv.num_wqes - 1 ), - qpc_eec_data.log_rq_stride, - ( fls ( sizeof ( arbel_qp->recv.wqe[0] ) - 1 ) - 4 ), - qpc_eec_data.log_sq_size, fls ( qp->send.num_wqes - 1 ), - qpc_eec_data.log_sq_stride, - ( fls ( sizeof ( arbel_qp->send.wqe[0] ) - 1 ) - 4 ) ); - MLX_FILL_1 ( &qpctx, 5, - qpc_eec_data.usr_page, arbel->limits.reserved_uars ); - MLX_FILL_1 ( &qpctx, 10, qpc_eec_data.primary_address_path.port_number, - ibdev->port ); - MLX_FILL_1 ( &qpctx, 27, qpc_eec_data.pd, ARBEL_GLOBAL_PD ); - MLX_FILL_H ( &qpctx, 28, qpc_eec_data.wqe_base_adr_h, wqe_base_adr ); - MLX_FILL_1 ( &qpctx, 29, qpc_eec_data.wqe_lkey, arbel->lkey ); - MLX_FILL_1 ( &qpctx, 30, qpc_eec_data.ssc, 1 ); - MLX_FILL_1 ( &qpctx, 33, qpc_eec_data.cqn_snd, qp->send.cq->cqn ); - MLX_FILL_1 ( &qpctx, 34, qpc_eec_data.snd_wqe_base_adr_l, - ( send_wqe_base_adr >> 6 ) ); - MLX_FILL_1 ( &qpctx, 35, qpc_eec_data.snd_db_record_index, - arbel_qp->send.doorbell_idx ); - MLX_FILL_4 ( &qpctx, 38, - qpc_eec_data.rre, 1, - qpc_eec_data.rwe, 1, - qpc_eec_data.rae, 1, - qpc_eec_data.rsc, 1 ); - MLX_FILL_1 ( &qpctx, 41, qpc_eec_data.cqn_rcv, qp->recv.cq->cqn ); - MLX_FILL_1 ( &qpctx, 42, qpc_eec_data.rcv_wqe_base_adr_l, - ( recv_wqe_base_adr >> 6 ) ); - MLX_FILL_1 ( &qpctx, 43, qpc_eec_data.rcv_db_record_index, - arbel_qp->recv.doorbell_idx ); - if ( ( rc = arbel_cmd_rst2init_qpee ( arbel, qp->qpn, &qpctx )) != 0 ){ - DBGC ( arbel, "Arbel %p QPN %#lx RST2INIT_QPEE failed: %s\n", - arbel, qp->qpn, strerror ( rc ) ); - goto err_rst2init_qpee; - } - arbel_qp->state = ARBEL_QP_ST_INIT; - - DBGC ( arbel, "Arbel %p QPN %#lx send ring [%08lx,%08lx), doorbell " - "%08lx\n", arbel, qp->qpn, virt_to_phys ( arbel_qp->send.wqe ), - ( virt_to_phys ( arbel_qp->send.wqe ) + - arbel_qp->send.wqe_size ), - virt_to_phys ( send_db_rec ) ); - DBGC ( arbel, "Arbel %p QPN %#lx receive ring [%08lx,%08lx), doorbell " - "%08lx\n", arbel, qp->qpn, virt_to_phys ( arbel_qp->recv.wqe ), - ( virt_to_phys ( arbel_qp->recv.wqe ) + - arbel_qp->recv.wqe_size ), - virt_to_phys ( recv_db_rec ) ); - DBGC ( arbel, "Arbel %p QPN %#lx send CQN %#lx receive CQN %#lx\n", - arbel, qp->qpn, qp->send.cq->cqn, qp->recv.cq->cqn ); - ib_qp_set_drvdata ( qp, arbel_qp ); - return 0; - - arbel_cmd_2rst_qpee ( arbel, qp->qpn ); - err_rst2init_qpee: - MLX_FILL_1 ( send_db_rec, 1, res, ARBEL_UAR_RES_NONE ); - MLX_FILL_1 ( recv_db_rec, 1, res, ARBEL_UAR_RES_NONE ); - err_unsupported_address_split: - free_dma ( arbel_qp->recv.wqe, arbel_qp->recv.wqe_size ); - err_create_recv_wq: - free_dma ( arbel_qp->send.wqe, arbel_qp->send.wqe_size ); - err_create_send_wq: - free ( arbel_qp ); - err_arbel_qp: - arbel_free_qpn ( ibdev, qp ); - err_alloc_qpn: - return rc; -} - -/** - * Modify queue pair - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @ret rc Return status code - */ -static int arbel_modify_qp ( struct ib_device *ibdev, - struct ib_queue_pair *qp ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp ); - struct arbelprm_qp_ee_state_transitions qpctx; - int rc; - - /* Transition queue to RTR state, if applicable */ - if ( arbel_qp->state < ARBEL_QP_ST_RTR ) { - memset ( &qpctx, 0, sizeof ( qpctx ) ); - MLX_FILL_2 ( &qpctx, 4, - qpc_eec_data.mtu, ARBEL_MTU_2048, - qpc_eec_data.msg_max, 31 ); - MLX_FILL_1 ( &qpctx, 7, - qpc_eec_data.remote_qpn_een, qp->av.qpn ); - MLX_FILL_2 ( &qpctx, 11, - qpc_eec_data.primary_address_path.rnr_retry, - ARBEL_RETRY_MAX, - qpc_eec_data.primary_address_path.rlid, - qp->av.lid ); - MLX_FILL_2 ( &qpctx, 12, - qpc_eec_data.primary_address_path.ack_timeout, - 14 /* 4.096us * 2^(14) = 67ms */, - qpc_eec_data.primary_address_path.max_stat_rate, - arbel_rate ( &qp->av ) ); - memcpy ( &qpctx.u.dwords[14], &qp->av.gid, - sizeof ( qp->av.gid ) ); - MLX_FILL_1 ( &qpctx, 30, - qpc_eec_data.retry_count, ARBEL_RETRY_MAX ); - MLX_FILL_1 ( &qpctx, 39, - qpc_eec_data.next_rcv_psn, qp->recv.psn ); - MLX_FILL_1 ( &qpctx, 40, - qpc_eec_data.ra_buff_indx, - ( arbel->limits.reserved_rdbs + - ( ( qp->qpn & ~ARBEL_QPN_RANDOM_MASK ) - - arbel->special_qpn_base ) ) ); - if ( ( rc = arbel_cmd_init2rtr_qpee ( arbel, qp->qpn, - &qpctx ) ) != 0 ) { - DBGC ( arbel, "Arbel %p QPN %#lx INIT2RTR_QPEE failed:" - " %s\n", arbel, qp->qpn, strerror ( rc ) ); - return rc; - } - arbel_qp->state = ARBEL_QP_ST_RTR; - } - - /* Transition queue to RTS state, if applicable */ - if ( arbel_qp->state < ARBEL_QP_ST_RTS ) { - memset ( &qpctx, 0, sizeof ( qpctx ) ); - MLX_FILL_1 ( &qpctx, 11, - qpc_eec_data.primary_address_path.rnr_retry, - ARBEL_RETRY_MAX ); - MLX_FILL_1 ( &qpctx, 12, - qpc_eec_data.primary_address_path.ack_timeout, - 14 /* 4.096us * 2^(14) = 67ms */ ); - MLX_FILL_2 ( &qpctx, 30, - qpc_eec_data.retry_count, ARBEL_RETRY_MAX, - qpc_eec_data.sic, 1 ); - MLX_FILL_1 ( &qpctx, 32, - qpc_eec_data.next_send_psn, qp->send.psn ); - if ( ( rc = arbel_cmd_rtr2rts_qpee ( arbel, qp->qpn, - &qpctx ) ) != 0 ) { - DBGC ( arbel, "Arbel %p QPN %#lx RTR2RTS_QPEE failed: " - "%s\n", arbel, qp->qpn, strerror ( rc ) ); - return rc; - } - arbel_qp->state = ARBEL_QP_ST_RTS; - } - - /* Update parameters in RTS state */ - memset ( &qpctx, 0, sizeof ( qpctx ) ); - MLX_FILL_1 ( &qpctx, 0, opt_param_mask, ARBEL_QPEE_OPT_PARAM_QKEY ); - MLX_FILL_1 ( &qpctx, 44, qpc_eec_data.q_key, qp->qkey ); - if ( ( rc = arbel_cmd_rts2rts_qpee ( arbel, qp->qpn, &qpctx ) ) != 0 ){ - DBGC ( arbel, "Arbel %p QPN %#lx RTS2RTS_QPEE failed: %s\n", - arbel, qp->qpn, strerror ( rc ) ); - return rc; - } - - return 0; -} - -/** - * Destroy queue pair - * - * @v ibdev Infiniband device - * @v qp Queue pair - */ -static void arbel_destroy_qp ( struct ib_device *ibdev, - struct ib_queue_pair *qp ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp ); - struct arbelprm_qp_db_record *send_db_rec; - struct arbelprm_qp_db_record *recv_db_rec; - int rc; - - /* Take ownership back from hardware */ - if ( ( rc = arbel_cmd_2rst_qpee ( arbel, qp->qpn ) ) != 0 ) { - DBGC ( arbel, "Arbel %p QPN %#lx FATAL 2RST_QPEE failed: " - "%s\n", arbel, qp->qpn, strerror ( rc ) ); - /* Leak memory and return; at least we avoid corruption */ - return; - } - - /* Clear doorbell records */ - send_db_rec = &arbel->db_rec[arbel_qp->send.doorbell_idx].qp; - recv_db_rec = &arbel->db_rec[arbel_qp->recv.doorbell_idx].qp; - MLX_FILL_1 ( send_db_rec, 1, res, ARBEL_UAR_RES_NONE ); - MLX_FILL_1 ( recv_db_rec, 1, res, ARBEL_UAR_RES_NONE ); - - /* Free memory */ - free_dma ( arbel_qp->send.wqe, arbel_qp->send.wqe_size ); - free_dma ( arbel_qp->recv.wqe, arbel_qp->recv.wqe_size ); - free ( arbel_qp ); - - /* Mark queue number as free */ - arbel_free_qpn ( ibdev, qp ); - - ib_qp_set_drvdata ( qp, NULL ); -} - -/*************************************************************************** - * - * Work request operations - * - *************************************************************************** - */ - -/** - * Ring doorbell register in UAR - * - * @v arbel Arbel device - * @v db_reg Doorbell register structure - * @v offset Address of doorbell - */ -static void arbel_ring_doorbell ( struct arbel *arbel, - union arbelprm_doorbell_register *db_reg, - unsigned int offset ) { - - DBGC2 ( arbel, "Arbel %p ringing doorbell %08x:%08x at %lx\n", - arbel, ntohl ( db_reg->dword[0] ), ntohl ( db_reg->dword[1] ), - virt_to_phys ( arbel->uar + offset ) ); - - barrier(); - writel ( db_reg->dword[0], ( arbel->uar + offset + 0 ) ); - barrier(); - writel ( db_reg->dword[1], ( arbel->uar + offset + 4 ) ); -} - -/** GID used for GID-less send work queue entries */ -static const union ib_gid arbel_no_gid = { - .bytes = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0 }, -}; - -/** - * Construct UD send work queue entry - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @v dest Destination address vector - * @v iobuf I/O buffer - * @v wqe Send work queue entry - * @ret nds Work queue entry size - */ -static size_t arbel_fill_ud_send_wqe ( struct ib_device *ibdev, - struct ib_queue_pair *qp __unused, - struct ib_address_vector *dest, - struct io_buffer *iobuf, - union arbel_send_wqe *wqe ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - const union ib_gid *gid; - - /* Construct this work queue entry */ - MLX_FILL_1 ( &wqe->ud.ctrl, 0, always1, 1 ); - MLX_FILL_2 ( &wqe->ud.ud, 0, - ud_address_vector.pd, ARBEL_GLOBAL_PD, - ud_address_vector.port_number, ibdev->port ); - MLX_FILL_2 ( &wqe->ud.ud, 1, - ud_address_vector.rlid, dest->lid, - ud_address_vector.g, dest->gid_present ); - MLX_FILL_2 ( &wqe->ud.ud, 2, - ud_address_vector.max_stat_rate, arbel_rate ( dest ), - ud_address_vector.msg, 3 ); - MLX_FILL_1 ( &wqe->ud.ud, 3, ud_address_vector.sl, dest->sl ); - gid = ( dest->gid_present ? &dest->gid : &arbel_no_gid ); - memcpy ( &wqe->ud.ud.u.dwords[4], gid, sizeof ( *gid ) ); - MLX_FILL_1 ( &wqe->ud.ud, 8, destination_qp, dest->qpn ); - MLX_FILL_1 ( &wqe->ud.ud, 9, q_key, dest->qkey ); - MLX_FILL_1 ( &wqe->ud.data[0], 0, byte_count, iob_len ( iobuf ) ); - MLX_FILL_1 ( &wqe->ud.data[0], 1, l_key, arbel->lkey ); - MLX_FILL_H ( &wqe->ud.data[0], 2, - local_address_h, virt_to_bus ( iobuf->data ) ); - MLX_FILL_1 ( &wqe->ud.data[0], 3, - local_address_l, virt_to_bus ( iobuf->data ) ); - - return ( offsetof ( typeof ( wqe->ud ), data[1] ) >> 4 ); -} - -/** - * Construct MLX send work queue entry - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @v dest Destination address vector - * @v iobuf I/O buffer - * @v wqe Send work queue entry - * @ret nds Work queue entry size - */ -static size_t arbel_fill_mlx_send_wqe ( struct ib_device *ibdev, - struct ib_queue_pair *qp, - struct ib_address_vector *dest, - struct io_buffer *iobuf, - union arbel_send_wqe *wqe ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct io_buffer headers; - - /* Construct IB headers */ - iob_populate ( &headers, &wqe->mlx.headers, 0, - sizeof ( wqe->mlx.headers ) ); - iob_reserve ( &headers, sizeof ( wqe->mlx.headers ) ); - ib_push ( ibdev, &headers, qp, iob_len ( iobuf ), dest ); - - /* Construct this work queue entry */ - MLX_FILL_5 ( &wqe->mlx.ctrl, 0, - c, 1 /* generate completion */, - icrc, 0 /* generate ICRC */, - max_statrate, arbel_rate ( dest ), - slr, 0, - v15, ( ( qp->ext_qpn == IB_QPN_SMI ) ? 1 : 0 ) ); - MLX_FILL_1 ( &wqe->mlx.ctrl, 1, rlid, dest->lid ); - MLX_FILL_1 ( &wqe->mlx.data[0], 0, - byte_count, iob_len ( &headers ) ); - MLX_FILL_1 ( &wqe->mlx.data[0], 1, l_key, arbel->lkey ); - MLX_FILL_H ( &wqe->mlx.data[0], 2, - local_address_h, virt_to_bus ( headers.data ) ); - MLX_FILL_1 ( &wqe->mlx.data[0], 3, - local_address_l, virt_to_bus ( headers.data ) ); - MLX_FILL_1 ( &wqe->mlx.data[1], 0, - byte_count, ( iob_len ( iobuf ) + 4 /* ICRC */ ) ); - MLX_FILL_1 ( &wqe->mlx.data[1], 1, l_key, arbel->lkey ); - MLX_FILL_H ( &wqe->mlx.data[1], 2, - local_address_h, virt_to_bus ( iobuf->data ) ); - MLX_FILL_1 ( &wqe->mlx.data[1], 3, - local_address_l, virt_to_bus ( iobuf->data ) ); - - return ( offsetof ( typeof ( wqe->mlx ), data[2] ) >> 4 ); -} - -/** - * Construct RC send work queue entry - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @v dest Destination address vector - * @v iobuf I/O buffer - * @v wqe Send work queue entry - * @ret nds Work queue entry size - */ -static size_t arbel_fill_rc_send_wqe ( struct ib_device *ibdev, - struct ib_queue_pair *qp __unused, - struct ib_address_vector *dest __unused, - struct io_buffer *iobuf, - union arbel_send_wqe *wqe ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - - /* Construct this work queue entry */ - MLX_FILL_1 ( &wqe->rc.ctrl, 0, always1, 1 ); - MLX_FILL_1 ( &wqe->rc.data[0], 0, byte_count, iob_len ( iobuf ) ); - MLX_FILL_1 ( &wqe->rc.data[0], 1, l_key, arbel->lkey ); - MLX_FILL_H ( &wqe->rc.data[0], 2, - local_address_h, virt_to_bus ( iobuf->data ) ); - MLX_FILL_1 ( &wqe->rc.data[0], 3, - local_address_l, virt_to_bus ( iobuf->data ) ); - - return ( offsetof ( typeof ( wqe->rc ), data[1] ) >> 4 ); -} - -/** Work queue entry constructors */ -static size_t -( * arbel_fill_send_wqe[] ) ( struct ib_device *ibdev, - struct ib_queue_pair *qp, - struct ib_address_vector *dest, - struct io_buffer *iobuf, - union arbel_send_wqe *wqe ) = { - [IB_QPT_SMI] = arbel_fill_mlx_send_wqe, - [IB_QPT_GSI] = arbel_fill_mlx_send_wqe, - [IB_QPT_UD] = arbel_fill_ud_send_wqe, - [IB_QPT_RC] = arbel_fill_rc_send_wqe, -}; - -/** - * Post send work queue entry - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @v dest Destination address vector - * @v iobuf I/O buffer - * @ret rc Return status code - */ -static int arbel_post_send ( struct ib_device *ibdev, - struct ib_queue_pair *qp, - struct ib_address_vector *dest, - struct io_buffer *iobuf ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp ); - struct ib_work_queue *wq = &qp->send; - struct arbel_send_work_queue *arbel_send_wq = &arbel_qp->send; - union arbel_send_wqe *prev_wqe; - union arbel_send_wqe *wqe; - struct arbelprm_qp_db_record *qp_db_rec; - union arbelprm_doorbell_register db_reg; - unsigned long wqe_idx_mask; - size_t nds; - - /* Allocate work queue entry */ - wqe_idx_mask = ( wq->num_wqes - 1 ); - if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) { - DBGC ( arbel, "Arbel %p QPN %#lx send queue full", - arbel, qp->qpn ); - return -ENOBUFS; - } - wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf; - prev_wqe = &arbel_send_wq->wqe[(wq->next_idx - 1) & wqe_idx_mask]; - wqe = &arbel_send_wq->wqe[wq->next_idx & wqe_idx_mask]; - - /* Construct work queue entry */ - memset ( ( ( ( void * ) wqe ) + sizeof ( wqe->next ) ), 0, - ( sizeof ( *wqe ) - sizeof ( wqe->next ) ) ); - assert ( qp->type < ( sizeof ( arbel_fill_send_wqe ) / - sizeof ( arbel_fill_send_wqe[0] ) ) ); - assert ( arbel_fill_send_wqe[qp->type] != NULL ); - nds = arbel_fill_send_wqe[qp->type] ( ibdev, qp, dest, iobuf, wqe ); - DBGCP ( arbel, "Arbel %p QPN %#lx posting send WQE %#lx:\n", - arbel, qp->qpn, ( wq->next_idx & wqe_idx_mask ) ); - DBGCP_HDA ( arbel, virt_to_phys ( wqe ), wqe, sizeof ( *wqe ) ); - - /* Update previous work queue entry's "next" field */ - MLX_SET ( &prev_wqe->next, nopcode, ARBEL_OPCODE_SEND ); - MLX_FILL_3 ( &prev_wqe->next, 1, - nds, nds, - f, 0, - always1, 1 ); - - /* Update doorbell record */ - barrier(); - qp_db_rec = &arbel->db_rec[arbel_send_wq->doorbell_idx].qp; - MLX_FILL_1 ( qp_db_rec, 0, - counter, ( ( wq->next_idx + 1 ) & 0xffff ) ); - - /* Ring doorbell register */ - MLX_FILL_4 ( &db_reg.send, 0, - nopcode, ARBEL_OPCODE_SEND, - f, 0, - wqe_counter, ( wq->next_idx & 0xffff ), - wqe_cnt, 1 ); - MLX_FILL_2 ( &db_reg.send, 1, - nds, nds, - qpn, qp->qpn ); - arbel_ring_doorbell ( arbel, &db_reg, ARBEL_DB_POST_SND_OFFSET ); - - /* Update work queue's index */ - wq->next_idx++; - - return 0; -} - -/** - * Post receive work queue entry - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @v iobuf I/O buffer - * @ret rc Return status code - */ -static int arbel_post_recv ( struct ib_device *ibdev, - struct ib_queue_pair *qp, - struct io_buffer *iobuf ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_queue_pair *arbel_qp = ib_qp_get_drvdata ( qp ); - struct ib_work_queue *wq = &qp->recv; - struct arbel_recv_work_queue *arbel_recv_wq = &arbel_qp->recv; - struct arbelprm_recv_wqe *wqe; - union arbelprm_doorbell_record *db_rec; - unsigned int wqe_idx_mask; - - /* Allocate work queue entry */ - wqe_idx_mask = ( wq->num_wqes - 1 ); - if ( wq->iobufs[wq->next_idx & wqe_idx_mask] ) { - DBGC ( arbel, "Arbel %p QPN %#lx receive queue full\n", - arbel, qp->qpn ); - return -ENOBUFS; - } - wq->iobufs[wq->next_idx & wqe_idx_mask] = iobuf; - wqe = &arbel_recv_wq->wqe[wq->next_idx & wqe_idx_mask].recv; - - /* Construct work queue entry */ - MLX_FILL_1 ( &wqe->data[0], 0, byte_count, iob_tailroom ( iobuf ) ); - MLX_FILL_1 ( &wqe->data[0], 1, l_key, arbel->lkey ); - MLX_FILL_H ( &wqe->data[0], 2, - local_address_h, virt_to_bus ( iobuf->data ) ); - MLX_FILL_1 ( &wqe->data[0], 3, - local_address_l, virt_to_bus ( iobuf->data ) ); - - /* Update doorbell record */ - barrier(); - db_rec = &arbel->db_rec[arbel_recv_wq->doorbell_idx]; - MLX_FILL_1 ( &db_rec->qp, 0, - counter, ( ( wq->next_idx + 1 ) & 0xffff ) ); - - /* Update work queue's index */ - wq->next_idx++; - - return 0; -} - -/** - * Handle completion - * - * @v ibdev Infiniband device - * @v cq Completion queue - * @v cqe Hardware completion queue entry - * @ret rc Return status code - */ -static int arbel_complete ( struct ib_device *ibdev, - struct ib_completion_queue *cq, - union arbelprm_completion_entry *cqe ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct ib_work_queue *wq; - struct ib_queue_pair *qp; - struct arbel_queue_pair *arbel_qp; - struct arbel_send_work_queue *arbel_send_wq; - struct arbel_recv_work_queue *arbel_recv_wq; - struct arbelprm_recv_wqe *recv_wqe; - struct io_buffer *iobuf; - struct ib_address_vector recv_dest; - struct ib_address_vector recv_source; - struct ib_global_route_header *grh; - struct ib_address_vector *source; - unsigned int opcode; - unsigned long qpn; - int is_send; - unsigned long wqe_adr; - unsigned long wqe_idx; - size_t len; - int rc = 0; - - /* Parse completion */ - qpn = MLX_GET ( &cqe->normal, my_qpn ); - is_send = MLX_GET ( &cqe->normal, s ); - wqe_adr = ( MLX_GET ( &cqe->normal, wqe_adr ) << 6 ); - opcode = MLX_GET ( &cqe->normal, opcode ); - if ( opcode >= ARBEL_OPCODE_RECV_ERROR ) { - /* "s" field is not valid for error opcodes */ - is_send = ( opcode == ARBEL_OPCODE_SEND_ERROR ); - DBGC ( arbel, "Arbel %p CQN %#lx %s QPN %#lx syndrome %#x " - "vendor %#x\n", arbel, cq->cqn, - ( is_send ? "send" : "recv" ), qpn, - MLX_GET ( &cqe->error, syndrome ), - MLX_GET ( &cqe->error, vendor_code ) ); - DBGC_HDA ( arbel, virt_to_phys ( cqe ), cqe, sizeof ( *cqe ) ); - rc = -EIO; - /* Don't return immediately; propagate error to completer */ - } - - /* Identify work queue */ - wq = ib_find_wq ( cq, qpn, is_send ); - if ( ! wq ) { - DBGC ( arbel, "Arbel %p CQN %#lx unknown %s QPN %#lx\n", - arbel, cq->cqn, ( is_send ? "send" : "recv" ), qpn ); - return -EIO; - } - qp = wq->qp; - arbel_qp = ib_qp_get_drvdata ( qp ); - arbel_send_wq = &arbel_qp->send; - arbel_recv_wq = &arbel_qp->recv; - - /* Identify work queue entry index */ - if ( is_send ) { - wqe_idx = ( ( wqe_adr - virt_to_bus ( arbel_send_wq->wqe ) ) / - sizeof ( arbel_send_wq->wqe[0] ) ); - assert ( wqe_idx < qp->send.num_wqes ); - } else { - wqe_idx = ( ( wqe_adr - virt_to_bus ( arbel_recv_wq->wqe ) ) / - sizeof ( arbel_recv_wq->wqe[0] ) ); - assert ( wqe_idx < qp->recv.num_wqes ); - } - - DBGCP ( arbel, "Arbel %p CQN %#lx QPN %#lx %s WQE %#lx completed:\n", - arbel, cq->cqn, qp->qpn, ( is_send ? "send" : "recv" ), - wqe_idx ); - DBGCP_HDA ( arbel, virt_to_phys ( cqe ), cqe, sizeof ( *cqe ) ); - - /* Identify I/O buffer */ - iobuf = wq->iobufs[wqe_idx]; - if ( ! iobuf ) { - DBGC ( arbel, "Arbel %p CQN %#lx QPN %#lx empty %s WQE %#lx\n", - arbel, cq->cqn, qp->qpn, ( is_send ? "send" : "recv" ), - wqe_idx ); - return -EIO; - } - wq->iobufs[wqe_idx] = NULL; - - if ( is_send ) { - /* Hand off to completion handler */ - ib_complete_send ( ibdev, qp, iobuf, rc ); - } else { - /* Set received length */ - len = MLX_GET ( &cqe->normal, byte_cnt ); - recv_wqe = &arbel_recv_wq->wqe[wqe_idx].recv; - assert ( MLX_GET ( &recv_wqe->data[0], local_address_l ) == - virt_to_bus ( iobuf->data ) ); - assert ( MLX_GET ( &recv_wqe->data[0], byte_count ) == - iob_tailroom ( iobuf ) ); - MLX_FILL_1 ( &recv_wqe->data[0], 0, byte_count, 0 ); - MLX_FILL_1 ( &recv_wqe->data[0], 1, - l_key, ARBEL_INVALID_LKEY ); - assert ( len <= iob_tailroom ( iobuf ) ); - iob_put ( iobuf, len ); - memset ( &recv_dest, 0, sizeof ( recv_dest ) ); - recv_dest.qpn = qpn; - switch ( qp->type ) { - case IB_QPT_SMI: - case IB_QPT_GSI: - case IB_QPT_UD: - assert ( iob_len ( iobuf ) >= sizeof ( *grh ) ); - grh = iobuf->data; - iob_pull ( iobuf, sizeof ( *grh ) ); - /* Construct address vector */ - source = &recv_source; - memset ( source, 0, sizeof ( *source ) ); - source->qpn = MLX_GET ( &cqe->normal, rqpn ); - source->lid = MLX_GET ( &cqe->normal, rlid ); - source->sl = MLX_GET ( &cqe->normal, sl ); - recv_dest.gid_present = source->gid_present = - MLX_GET ( &cqe->normal, g ); - memcpy ( &recv_dest.gid, &grh->dgid, - sizeof ( recv_dest.gid ) ); - memcpy ( &source->gid, &grh->sgid, - sizeof ( source->gid ) ); - break; - case IB_QPT_RC: - source = &qp->av; - break; - default: - assert ( 0 ); - return -EINVAL; - } - /* Hand off to completion handler */ - ib_complete_recv ( ibdev, qp, &recv_dest, source, iobuf, rc ); - } - - return rc; -} - -/** - * Poll completion queue - * - * @v ibdev Infiniband device - * @v cq Completion queue - */ -static void arbel_poll_cq ( struct ib_device *ibdev, - struct ib_completion_queue *cq ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_completion_queue *arbel_cq = ib_cq_get_drvdata ( cq ); - struct arbelprm_cq_ci_db_record *ci_db_rec; - union arbelprm_completion_entry *cqe; - unsigned int cqe_idx_mask; - int rc; - - while ( 1 ) { - /* Look for completion entry */ - cqe_idx_mask = ( cq->num_cqes - 1 ); - cqe = &arbel_cq->cqe[cq->next_idx & cqe_idx_mask]; - if ( MLX_GET ( &cqe->normal, owner ) != 0 ) { - /* Entry still owned by hardware; end of poll */ - break; - } - - /* Handle completion */ - if ( ( rc = arbel_complete ( ibdev, cq, cqe ) ) != 0 ) { - DBGC ( arbel, "Arbel %p CQN %#lx failed to complete: " - "%s\n", arbel, cq->cqn, strerror ( rc ) ); - DBGC_HD ( arbel, cqe, sizeof ( *cqe ) ); - } - - /* Return ownership to hardware */ - MLX_FILL_1 ( &cqe->normal, 7, owner, 1 ); - barrier(); - /* Update completion queue's index */ - cq->next_idx++; - /* Update doorbell record */ - ci_db_rec = &arbel->db_rec[arbel_cq->ci_doorbell_idx].cq_ci; - MLX_FILL_1 ( ci_db_rec, 0, - counter, ( cq->next_idx & 0xffffffffUL ) ); - } -} - -/*************************************************************************** - * - * Event queues - * - *************************************************************************** - */ - -/** - * Create event queue - * - * @v arbel Arbel device - * @ret rc Return status code - */ -static int arbel_create_eq ( struct arbel *arbel ) { - struct arbel_event_queue *arbel_eq = &arbel->eq; - struct arbelprm_eqc eqctx; - struct arbelprm_event_mask mask; - unsigned int i; - int rc; - - /* Select event queue number */ - arbel_eq->eqn = arbel->limits.reserved_eqs; - - /* Calculate doorbell address */ - arbel_eq->doorbell = ( arbel->eq_ci_doorbells + - ARBEL_DB_EQ_OFFSET ( arbel_eq->eqn ) ); - - /* Allocate event queue itself */ - arbel_eq->eqe_size = - ( ARBEL_NUM_EQES * sizeof ( arbel_eq->eqe[0] ) ); - arbel_eq->eqe = malloc_dma ( arbel_eq->eqe_size, - sizeof ( arbel_eq->eqe[0] ) ); - if ( ! arbel_eq->eqe ) { - rc = -ENOMEM; - goto err_eqe; - } - memset ( arbel_eq->eqe, 0, arbel_eq->eqe_size ); - for ( i = 0 ; i < ARBEL_NUM_EQES ; i++ ) { - MLX_FILL_1 ( &arbel_eq->eqe[i].generic, 7, owner, 1 ); - } - barrier(); - - /* Hand queue over to hardware */ - memset ( &eqctx, 0, sizeof ( eqctx ) ); - MLX_FILL_1 ( &eqctx, 0, st, 0xa /* "Fired" */ ); - MLX_FILL_H ( &eqctx, 1, - start_address_h, virt_to_phys ( arbel_eq->eqe ) ); - MLX_FILL_1 ( &eqctx, 2, - start_address_l, virt_to_phys ( arbel_eq->eqe ) ); - MLX_FILL_1 ( &eqctx, 3, log_eq_size, fls ( ARBEL_NUM_EQES - 1 ) ); - MLX_FILL_1 ( &eqctx, 6, pd, ARBEL_GLOBAL_PD ); - MLX_FILL_1 ( &eqctx, 7, lkey, arbel->lkey ); - if ( ( rc = arbel_cmd_sw2hw_eq ( arbel, arbel_eq->eqn, - &eqctx ) ) != 0 ) { - DBGC ( arbel, "Arbel %p EQN %#lx SW2HW_EQ failed: %s\n", - arbel, arbel_eq->eqn, strerror ( rc ) ); - goto err_sw2hw_eq; - } - - /* Map events to this event queue */ - memset ( &mask, 0xff, sizeof ( mask ) ); - if ( ( rc = arbel_cmd_map_eq ( arbel, - ( ARBEL_MAP_EQ | arbel_eq->eqn ), - &mask ) ) != 0 ) { - DBGC ( arbel, "Arbel %p EQN %#lx MAP_EQ failed: %s\n", - arbel, arbel_eq->eqn, strerror ( rc ) ); - goto err_map_eq; - } - - DBGC ( arbel, "Arbel %p EQN %#lx ring [%08lx,%08lx), doorbell %08lx\n", - arbel, arbel_eq->eqn, virt_to_phys ( arbel_eq->eqe ), - ( virt_to_phys ( arbel_eq->eqe ) + arbel_eq->eqe_size ), - virt_to_phys ( arbel_eq->doorbell ) ); - return 0; - - err_map_eq: - arbel_cmd_hw2sw_eq ( arbel, arbel_eq->eqn, &eqctx ); - err_sw2hw_eq: - free_dma ( arbel_eq->eqe, arbel_eq->eqe_size ); - err_eqe: - memset ( arbel_eq, 0, sizeof ( *arbel_eq ) ); - return rc; -} - -/** - * Destroy event queue - * - * @v arbel Arbel device - */ -static void arbel_destroy_eq ( struct arbel *arbel ) { - struct arbel_event_queue *arbel_eq = &arbel->eq; - struct arbelprm_eqc eqctx; - struct arbelprm_event_mask mask; - int rc; - - /* Unmap events from event queue */ - memset ( &mask, 0, sizeof ( mask ) ); - MLX_FILL_1 ( &mask, 1, port_state_change, 1 ); - if ( ( rc = arbel_cmd_map_eq ( arbel, - ( ARBEL_UNMAP_EQ | arbel_eq->eqn ), - &mask ) ) != 0 ) { - DBGC ( arbel, "Arbel %p EQN %#lx FATAL MAP_EQ failed to " - "unmap: %s\n", arbel, arbel_eq->eqn, strerror ( rc ) ); - /* Continue; HCA may die but system should survive */ - } - - /* Take ownership back from hardware */ - if ( ( rc = arbel_cmd_hw2sw_eq ( arbel, arbel_eq->eqn, - &eqctx ) ) != 0 ) { - DBGC ( arbel, "Arbel %p EQN %#lx FATAL HW2SW_EQ failed: %s\n", - arbel, arbel_eq->eqn, strerror ( rc ) ); - /* Leak memory and return; at least we avoid corruption */ - return; - } - - /* Free memory */ - free_dma ( arbel_eq->eqe, arbel_eq->eqe_size ); - memset ( arbel_eq, 0, sizeof ( *arbel_eq ) ); -} - -/** - * Handle port state event - * - * @v arbel Arbel device - * @v eqe Port state change event queue entry - */ -static void arbel_event_port_state_change ( struct arbel *arbel, - union arbelprm_event_entry *eqe){ - unsigned int port; - int link_up; - - /* Get port and link status */ - port = ( MLX_GET ( &eqe->port_state_change, data.p ) - 1 ); - link_up = ( MLX_GET ( &eqe->generic, event_sub_type ) & 0x04 ); - DBGC ( arbel, "Arbel %p port %d link %s\n", arbel, ( port + 1 ), - ( link_up ? "up" : "down" ) ); - - /* Sanity check */ - if ( port >= ARBEL_NUM_PORTS ) { - DBGC ( arbel, "Arbel %p port %d does not exist!\n", - arbel, ( port + 1 ) ); - return; - } - - /* Update MAD parameters */ - ib_smc_update ( arbel->ibdev[port], arbel_mad ); -} - -/** - * Poll event queue - * - * @v ibdev Infiniband device - */ -static void arbel_poll_eq ( struct ib_device *ibdev ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbel_event_queue *arbel_eq = &arbel->eq; - union arbelprm_event_entry *eqe; - union arbelprm_eq_doorbell_register db_reg; - unsigned int eqe_idx_mask; - unsigned int event_type; - - /* No event is generated upon reaching INIT, so we must poll - * separately for link state changes while we remain DOWN. - */ - if ( ib_is_open ( ibdev ) && - ( ibdev->port_state == IB_PORT_STATE_DOWN ) ) { - ib_smc_update ( ibdev, arbel_mad ); - } - - /* Poll event queue */ - while ( 1 ) { - /* Look for event entry */ - eqe_idx_mask = ( ARBEL_NUM_EQES - 1 ); - eqe = &arbel_eq->eqe[arbel_eq->next_idx & eqe_idx_mask]; - if ( MLX_GET ( &eqe->generic, owner ) != 0 ) { - /* Entry still owned by hardware; end of poll */ - break; - } - DBGCP ( arbel, "Arbel %p EQN %#lx event:\n", - arbel, arbel_eq->eqn ); - DBGCP_HDA ( arbel, virt_to_phys ( eqe ), - eqe, sizeof ( *eqe ) ); - - /* Handle event */ - event_type = MLX_GET ( &eqe->generic, event_type ); - switch ( event_type ) { - case ARBEL_EV_PORT_STATE_CHANGE: - arbel_event_port_state_change ( arbel, eqe ); - break; - default: - DBGC ( arbel, "Arbel %p EQN %#lx unrecognised event " - "type %#x:\n", - arbel, arbel_eq->eqn, event_type ); - DBGC_HDA ( arbel, virt_to_phys ( eqe ), - eqe, sizeof ( *eqe ) ); - break; - } - - /* Return ownership to hardware */ - MLX_FILL_1 ( &eqe->generic, 7, owner, 1 ); - barrier(); - - /* Update event queue's index */ - arbel_eq->next_idx++; - - /* Ring doorbell */ - MLX_FILL_1 ( &db_reg.ci, 0, ci, arbel_eq->next_idx ); - writel ( db_reg.dword[0], arbel_eq->doorbell ); - } -} - -/*************************************************************************** - * - * Firmware control - * - *************************************************************************** - */ - -/** - * Map virtual to physical address for firmware usage - * - * @v arbel Arbel device - * @v map Mapping function - * @v va Virtual address - * @v pa Physical address - * @v len Length of region - * @ret rc Return status code - */ -static int arbel_map_vpm ( struct arbel *arbel, - int ( *map ) ( struct arbel *arbel, - const struct arbelprm_virtual_physical_mapping* ), - uint64_t va, physaddr_t pa, size_t len ) { - struct arbelprm_virtual_physical_mapping mapping; - physaddr_t start; - physaddr_t low; - physaddr_t high; - physaddr_t end; - size_t size; - int rc; - - /* Sanity checks */ - assert ( ( va & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 ); - assert ( ( pa & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 ); - assert ( ( len & ( ARBEL_PAGE_SIZE - 1 ) ) == 0 ); - - /* Calculate starting points */ - start = pa; - end = ( start + len ); - size = ( 1UL << ( fls ( start ^ end ) - 1 ) ); - low = high = ( end & ~( size - 1 ) ); - assert ( start < low ); - assert ( high <= end ); - - /* These mappings tend to generate huge volumes of - * uninteresting debug data, which basically makes it - * impossible to use debugging otherwise. - */ - DBG_DISABLE ( DBGLVL_LOG | DBGLVL_EXTRA ); - - /* Map blocks in descending order of size */ - while ( size >= ARBEL_PAGE_SIZE ) { - - /* Find the next candidate block */ - if ( ( low - size ) >= start ) { - low -= size; - pa = low; - } else if ( ( high + size ) <= end ) { - pa = high; - high += size; - } else { - size >>= 1; - continue; - } - assert ( ( va & ( size - 1 ) ) == 0 ); - assert ( ( pa & ( size - 1 ) ) == 0 ); - - /* Map this block */ - memset ( &mapping, 0, sizeof ( mapping ) ); - MLX_FILL_1 ( &mapping, 0, va_h, ( va >> 32 ) ); - MLX_FILL_1 ( &mapping, 1, va_l, ( va >> 12 ) ); - MLX_FILL_H ( &mapping, 2, pa_h, pa ); - MLX_FILL_2 ( &mapping, 3, - log2size, ( ( fls ( size ) - 1 ) - 12 ), - pa_l, ( pa >> 12 ) ); - if ( ( rc = map ( arbel, &mapping ) ) != 0 ) { - DBG_ENABLE ( DBGLVL_LOG | DBGLVL_EXTRA ); - DBGC ( arbel, "Arbel %p could not map %08llx+%zx to " - "%08lx: %s\n", - arbel, va, size, pa, strerror ( rc ) ); - return rc; - } - va += size; - } - assert ( low == start ); - assert ( high == end ); - - DBG_ENABLE ( DBGLVL_LOG | DBGLVL_EXTRA ); - return 0; -} - -/** - * Start firmware running - * - * @v arbel Arbel device - * @ret rc Return status code - */ -static int arbel_start_firmware ( struct arbel *arbel ) { - struct arbelprm_query_fw fw; - struct arbelprm_access_lam lam; - unsigned int fw_pages; - size_t fw_len; - physaddr_t fw_base; - uint64_t eq_set_ci_base_addr; - int rc; - - /* Get firmware parameters */ - if ( ( rc = arbel_cmd_query_fw ( arbel, &fw ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not query firmware: %s\n", - arbel, strerror ( rc ) ); - goto err_query_fw; - } - DBGC ( arbel, "Arbel %p firmware version %d.%d.%d\n", arbel, - MLX_GET ( &fw, fw_rev_major ), MLX_GET ( &fw, fw_rev_minor ), - MLX_GET ( &fw, fw_rev_subminor ) ); - fw_pages = MLX_GET ( &fw, fw_pages ); - DBGC ( arbel, "Arbel %p requires %d kB for firmware\n", - arbel, ( fw_pages * 4 ) ); - eq_set_ci_base_addr = - ( ( (uint64_t) MLX_GET ( &fw, eq_set_ci_base_addr_h ) << 32 ) | - ( (uint64_t) MLX_GET ( &fw, eq_set_ci_base_addr_l ) ) ); - arbel->eq_ci_doorbells = ioremap ( eq_set_ci_base_addr, 0x200 ); - - /* Enable locally-attached memory. Ignore failure; there may - * be no attached memory. - */ - arbel_cmd_enable_lam ( arbel, &lam ); - - /* Allocate firmware pages and map firmware area */ - fw_len = ( fw_pages * ARBEL_PAGE_SIZE ); - if ( ! arbel->firmware_area ) { - arbel->firmware_len = fw_len; - arbel->firmware_area = umalloc ( arbel->firmware_len ); - if ( ! arbel->firmware_area ) { - rc = -ENOMEM; - goto err_alloc_fa; - } - } else { - assert ( arbel->firmware_len == fw_len ); - } - fw_base = user_to_phys ( arbel->firmware_area, 0 ); - DBGC ( arbel, "Arbel %p firmware area at [%08lx,%08lx)\n", - arbel, fw_base, ( fw_base + fw_len ) ); - if ( ( rc = arbel_map_vpm ( arbel, arbel_cmd_map_fa, - 0, fw_base, fw_len ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not map firmware: %s\n", - arbel, strerror ( rc ) ); - goto err_map_fa; - } - - /* Start firmware */ - if ( ( rc = arbel_cmd_run_fw ( arbel ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not run firmware: %s\n", - arbel, strerror ( rc ) ); - goto err_run_fw; - } - - DBGC ( arbel, "Arbel %p firmware started\n", arbel ); - return 0; - - err_run_fw: - arbel_cmd_unmap_fa ( arbel ); - err_map_fa: - err_alloc_fa: - err_query_fw: - return rc; -} - -/** - * Stop firmware running - * - * @v arbel Arbel device - */ -static void arbel_stop_firmware ( struct arbel *arbel ) { - int rc; - - if ( ( rc = arbel_cmd_unmap_fa ( arbel ) ) != 0 ) { - DBGC ( arbel, "Arbel %p FATAL could not stop firmware: %s\n", - arbel, strerror ( rc ) ); - /* Leak memory and return; at least we avoid corruption */ - arbel->firmware_area = UNULL; - return; - } -} - -/*************************************************************************** - * - * Infinihost Context Memory management - * - *************************************************************************** - */ - -/** - * Get device limits - * - * @v arbel Arbel device - * @ret rc Return status code - */ -static int arbel_get_limits ( struct arbel *arbel ) { - struct arbelprm_query_dev_lim dev_lim; - int rc; - - if ( ( rc = arbel_cmd_query_dev_lim ( arbel, &dev_lim ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not get device limits: %s\n", - arbel, strerror ( rc ) ); - return rc; - } - - arbel->limits.reserved_qps = - ( 1 << MLX_GET ( &dev_lim, log2_rsvd_qps ) ); - arbel->limits.qpc_entry_size = MLX_GET ( &dev_lim, qpc_entry_sz ); - arbel->limits.eqpc_entry_size = MLX_GET ( &dev_lim, eqpc_entry_sz ); - arbel->limits.reserved_srqs = - ( 1 << MLX_GET ( &dev_lim, log2_rsvd_srqs ) ); - arbel->limits.srqc_entry_size = MLX_GET ( &dev_lim, srq_entry_sz ); - arbel->limits.reserved_ees = - ( 1 << MLX_GET ( &dev_lim, log2_rsvd_ees ) ); - arbel->limits.eec_entry_size = MLX_GET ( &dev_lim, eec_entry_sz ); - arbel->limits.eeec_entry_size = MLX_GET ( &dev_lim, eeec_entry_sz ); - arbel->limits.reserved_cqs = - ( 1 << MLX_GET ( &dev_lim, log2_rsvd_cqs ) ); - arbel->limits.cqc_entry_size = MLX_GET ( &dev_lim, cqc_entry_sz ); - arbel->limits.reserved_mtts = - ( 1 << MLX_GET ( &dev_lim, log2_rsvd_mtts ) ); - arbel->limits.mtt_entry_size = MLX_GET ( &dev_lim, mtt_entry_sz ); - arbel->limits.reserved_mrws = - ( 1 << MLX_GET ( &dev_lim, log2_rsvd_mrws ) ); - arbel->limits.mpt_entry_size = MLX_GET ( &dev_lim, mpt_entry_sz ); - arbel->limits.reserved_rdbs = - ( 1 << MLX_GET ( &dev_lim, log2_rsvd_rdbs ) ); - arbel->limits.reserved_eqs = MLX_GET ( &dev_lim, num_rsvd_eqs ); - arbel->limits.eqc_entry_size = MLX_GET ( &dev_lim, eqc_entry_sz ); - arbel->limits.reserved_uars = MLX_GET ( &dev_lim, num_rsvd_uars ); - arbel->limits.uar_scratch_entry_size = - MLX_GET ( &dev_lim, uar_scratch_entry_sz ); - - DBGC ( arbel, "Arbel %p reserves %d x %#zx QPC, %d x %#zx EQPC, " - "%d x %#zx SRQC\n", arbel, - arbel->limits.reserved_qps, arbel->limits.qpc_entry_size, - arbel->limits.reserved_qps, arbel->limits.eqpc_entry_size, - arbel->limits.reserved_srqs, arbel->limits.srqc_entry_size ); - DBGC ( arbel, "Arbel %p reserves %d x %#zx EEC, %d x %#zx EEEC, " - "%d x %#zx CQC\n", arbel, - arbel->limits.reserved_ees, arbel->limits.eec_entry_size, - arbel->limits.reserved_ees, arbel->limits.eeec_entry_size, - arbel->limits.reserved_cqs, arbel->limits.cqc_entry_size ); - DBGC ( arbel, "Arbel %p reserves %d x %#zx EQC, %d x %#zx MTT, " - "%d x %#zx MPT\n", arbel, - arbel->limits.reserved_eqs, arbel->limits.eqc_entry_size, - arbel->limits.reserved_mtts, arbel->limits.mtt_entry_size, - arbel->limits.reserved_mrws, arbel->limits.mpt_entry_size ); - DBGC ( arbel, "Arbel %p reserves %d x %#zx RDB, %d x %#zx UAR, " - "%d x %#zx UAR scratchpad\n", arbel, - arbel->limits.reserved_rdbs, ARBEL_RDB_ENTRY_SIZE, - arbel->limits.reserved_uars, ARBEL_PAGE_SIZE, - arbel->limits.reserved_uars, - arbel->limits.uar_scratch_entry_size ); - - return 0; -} - -/** - * Align ICM table - * - * @v icm_offset Current ICM offset - * @v len ICM table length - * @ret icm_offset ICM offset - */ -static size_t icm_align ( size_t icm_offset, size_t len ) { - - /* Round up to a multiple of the table size */ - assert ( len == ( 1UL << ( fls ( len ) - 1 ) ) ); - return ( ( icm_offset + len - 1 ) & ~( len - 1 ) ); -} - -/** - * Allocate ICM - * - * @v arbel Arbel device - * @v init_hca INIT_HCA structure to fill in - * @ret rc Return status code - */ -static int arbel_alloc_icm ( struct arbel *arbel, - struct arbelprm_init_hca *init_hca ) { - struct arbelprm_scalar_parameter icm_size; - struct arbelprm_scalar_parameter icm_aux_size; - struct arbelprm_scalar_parameter unmap_icm; - union arbelprm_doorbell_record *db_rec; - size_t icm_offset = 0; - unsigned int log_num_uars, log_num_qps, log_num_srqs, log_num_ees; - unsigned int log_num_cqs, log_num_mtts, log_num_mpts, log_num_rdbs; - unsigned int log_num_eqs, log_num_mcs; - size_t icm_len, icm_aux_len; - size_t len; - physaddr_t icm_phys; - int rc; - - /* Calculate number of each object type within ICM */ - log_num_qps = fls ( arbel->limits.reserved_qps + - ARBEL_RSVD_SPECIAL_QPS + ARBEL_MAX_QPS - 1 ); - log_num_srqs = fls ( arbel->limits.reserved_srqs - 1 ); - log_num_ees = fls ( arbel->limits.reserved_ees - 1 ); - log_num_cqs = fls ( arbel->limits.reserved_cqs + ARBEL_MAX_CQS - 1 ); - log_num_eqs = fls ( arbel->limits.reserved_eqs + ARBEL_MAX_EQS - 1 ); - log_num_mtts = fls ( arbel->limits.reserved_mtts - 1 ); - log_num_mpts = fls ( arbel->limits.reserved_mrws + 1 - 1 ); - log_num_rdbs = fls ( arbel->limits.reserved_rdbs + - ARBEL_RSVD_SPECIAL_QPS + ARBEL_MAX_QPS - 1 ); - log_num_uars = fls ( arbel->limits.reserved_uars + - 1 /* single UAR used */ - 1 ); - log_num_mcs = ARBEL_LOG_MULTICAST_HASH_SIZE; - - /* Queue pair contexts */ - len = ( ( 1 << log_num_qps ) * arbel->limits.qpc_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_2 ( init_hca, 13, - qpc_eec_cqc_eqc_rdb_parameters.qpc_base_addr_l, - ( icm_offset >> 7 ), - qpc_eec_cqc_eqc_rdb_parameters.log_num_of_qp, - log_num_qps ); - DBGC ( arbel, "Arbel %p ICM QPC is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_qps ), arbel->limits.qpc_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Extended queue pair contexts */ - len = ( ( 1 << log_num_qps ) * arbel->limits.eqpc_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_1 ( init_hca, 25, - qpc_eec_cqc_eqc_rdb_parameters.eqpc_base_addr_l, - icm_offset ); - DBGC ( arbel, "Arbel %p ICM EQPC is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_qps ), arbel->limits.eqpc_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Completion queue contexts */ - len = ( ( 1 << log_num_cqs ) * arbel->limits.cqc_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_2 ( init_hca, 21, - qpc_eec_cqc_eqc_rdb_parameters.cqc_base_addr_l, - ( icm_offset >> 6 ), - qpc_eec_cqc_eqc_rdb_parameters.log_num_of_cq, - log_num_cqs ); - DBGC ( arbel, "Arbel %p ICM CQC is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_cqs ), arbel->limits.cqc_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Event queue contexts */ - len = ( ( 1 << log_num_eqs ) * arbel->limits.eqc_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_2 ( init_hca, 33, - qpc_eec_cqc_eqc_rdb_parameters.eqc_base_addr_l, - ( icm_offset >> 6 ), - qpc_eec_cqc_eqc_rdb_parameters.log_num_eq, - log_num_eqs ); - DBGC ( arbel, "Arbel %p ICM EQC is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_eqs ), arbel->limits.eqc_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* End-to-end contexts */ - len = ( ( 1 << log_num_ees ) * arbel->limits.eec_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_2 ( init_hca, 17, - qpc_eec_cqc_eqc_rdb_parameters.eec_base_addr_l, - ( icm_offset >> 7 ), - qpc_eec_cqc_eqc_rdb_parameters.log_num_of_ee, - log_num_ees ); - DBGC ( arbel, "Arbel %p ICM EEC is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_ees ), arbel->limits.eec_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Shared receive queue contexts */ - len = ( ( 1 << log_num_srqs ) * arbel->limits.srqc_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_2 ( init_hca, 19, - qpc_eec_cqc_eqc_rdb_parameters.srqc_base_addr_l, - ( icm_offset >> 5 ), - qpc_eec_cqc_eqc_rdb_parameters.log_num_of_srq, - log_num_srqs ); - DBGC ( arbel, "Arbel %p ICM SRQC is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_srqs ), arbel->limits.srqc_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Memory protection table */ - len = ( ( 1 << log_num_mpts ) * arbel->limits.mpt_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_1 ( init_hca, 61, - tpt_parameters.mpt_base_adr_l, icm_offset ); - MLX_FILL_1 ( init_hca, 62, - tpt_parameters.log_mpt_sz, log_num_mpts ); - DBGC ( arbel, "Arbel %p ICM MPT is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_mpts ), arbel->limits.mpt_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Remote read data base table */ - len = ( ( 1 << log_num_rdbs ) * ARBEL_RDB_ENTRY_SIZE ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_1 ( init_hca, 37, - qpc_eec_cqc_eqc_rdb_parameters.rdb_base_addr_l, - icm_offset ); - DBGC ( arbel, "Arbel %p ICM RDB is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_rdbs ), ARBEL_RDB_ENTRY_SIZE, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Extended end-to-end contexts */ - len = ( ( 1 << log_num_ees ) * arbel->limits.eeec_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_1 ( init_hca, 29, - qpc_eec_cqc_eqc_rdb_parameters.eeec_base_addr_l, - icm_offset ); - DBGC ( arbel, "Arbel %p ICM EEEC is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_ees ), arbel->limits.eeec_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Multicast table */ - len = ( ( 1 << log_num_mcs ) * sizeof ( struct arbelprm_mgm_entry ) ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_1 ( init_hca, 49, - multicast_parameters.mc_base_addr_l, icm_offset ); - MLX_FILL_1 ( init_hca, 52, - multicast_parameters.log_mc_table_entry_sz, - fls ( sizeof ( struct arbelprm_mgm_entry ) - 1 ) ); - MLX_FILL_1 ( init_hca, 53, - multicast_parameters.mc_table_hash_sz, - ( 1 << log_num_mcs ) ); - MLX_FILL_1 ( init_hca, 54, - multicast_parameters.log_mc_table_sz, - log_num_mcs /* Only one entry per hash */ ); - DBGC ( arbel, "Arbel %p ICM MC is %d x %#zx at [%zx,%zx)\n", arbel, - ( 1 << log_num_mcs ), sizeof ( struct arbelprm_mgm_entry ), - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Memory translation table */ - len = ( ( 1 << log_num_mtts ) * arbel->limits.mtt_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_1 ( init_hca, 65, - tpt_parameters.mtt_base_addr_l, icm_offset ); - DBGC ( arbel, "Arbel %p ICM MTT is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_mtts ), arbel->limits.mtt_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* User access region scratchpads */ - len = ( ( 1 << log_num_uars ) * arbel->limits.uar_scratch_entry_size ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_1 ( init_hca, 77, - uar_parameters.uar_scratch_base_addr_l, icm_offset ); - DBGC ( arbel, "Arbel %p UAR scratchpad is %d x %#zx at [%zx,%zx)\n", - arbel, ( 1 << log_num_uars ), - arbel->limits.uar_scratch_entry_size, - icm_offset, ( icm_offset + len ) ); - icm_offset += len; - - /* Record amount of ICM to be allocated */ - icm_offset = icm_align ( icm_offset, ARBEL_PAGE_SIZE ); - icm_len = icm_offset; - - /* User access region contexts - * - * The reserved UAR(s) do not need to be backed by physical - * memory, and our UAR is allocated separately; neither are - * part of the umalloc()ed ICM block, but both contribute to - * the total length of ICM virtual address space. - */ - len = ( ( 1 << log_num_uars ) * ARBEL_PAGE_SIZE ); - icm_offset = icm_align ( icm_offset, len ); - MLX_FILL_1 ( init_hca, 74, uar_parameters.log_max_uars, log_num_uars ); - MLX_FILL_1 ( init_hca, 79, - uar_parameters.uar_context_base_addr_l, icm_offset ); - arbel->db_rec_offset = - ( icm_offset + - ( arbel->limits.reserved_uars * ARBEL_PAGE_SIZE ) ); - DBGC ( arbel, "Arbel %p UAR is %d x %#zx at [%zx,%zx), doorbells " - "[%zx,%zx)\n", arbel, ( 1 << log_num_uars ), ARBEL_PAGE_SIZE, - icm_offset, ( icm_offset + len ), arbel->db_rec_offset, - ( arbel->db_rec_offset + ARBEL_PAGE_SIZE ) ); - icm_offset += len; - - /* Get ICM auxiliary area size */ - memset ( &icm_size, 0, sizeof ( icm_size ) ); - MLX_FILL_1 ( &icm_size, 1, value, icm_len ); - if ( ( rc = arbel_cmd_set_icm_size ( arbel, &icm_size, - &icm_aux_size ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not set ICM size: %s\n", - arbel, strerror ( rc ) ); - goto err_set_icm_size; - } - icm_aux_len = ( MLX_GET ( &icm_aux_size, value ) * ARBEL_PAGE_SIZE ); - - /* Allocate ICM data and auxiliary area */ - DBGC ( arbel, "Arbel %p requires %zd kB ICM and %zd kB AUX ICM\n", - arbel, ( icm_len / 1024 ), ( icm_aux_len / 1024 ) ); - if ( ! arbel->icm ) { - arbel->icm_len = icm_len; - arbel->icm_aux_len = icm_aux_len; - arbel->icm = umalloc ( arbel->icm_len + arbel->icm_aux_len ); - if ( ! arbel->icm ) { - rc = -ENOMEM; - goto err_alloc_icm; - } - } else { - assert ( arbel->icm_len == icm_len ); - assert ( arbel->icm_aux_len == icm_aux_len ); - } - icm_phys = user_to_phys ( arbel->icm, 0 ); - - /* Allocate doorbell UAR */ - arbel->db_rec = malloc_dma ( ARBEL_PAGE_SIZE, ARBEL_PAGE_SIZE ); - if ( ! arbel->db_rec ) { - rc = -ENOMEM; - goto err_alloc_doorbell; - } - - /* Map ICM auxiliary area */ - DBGC ( arbel, "Arbel %p ICM AUX at [%08lx,%08lx)\n", - arbel, icm_phys, ( icm_phys + arbel->icm_aux_len ) ); - if ( ( rc = arbel_map_vpm ( arbel, arbel_cmd_map_icm_aux, - 0, icm_phys, arbel->icm_aux_len ) ) != 0 ){ - DBGC ( arbel, "Arbel %p could not map AUX ICM: %s\n", - arbel, strerror ( rc ) ); - goto err_map_icm_aux; - } - icm_phys += arbel->icm_aux_len; - - /* Map ICM area */ - DBGC ( arbel, "Arbel %p ICM at [%08lx,%08lx)\n", - arbel, icm_phys, ( icm_phys + arbel->icm_len ) ); - if ( ( rc = arbel_map_vpm ( arbel, arbel_cmd_map_icm, - 0, icm_phys, arbel->icm_len ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not map ICM: %s\n", - arbel, strerror ( rc ) ); - goto err_map_icm; - } - icm_phys += arbel->icm_len; - - /* Map doorbell UAR */ - DBGC ( arbel, "Arbel %p UAR at [%08lx,%08lx)\n", - arbel, virt_to_phys ( arbel->db_rec ), - ( virt_to_phys ( arbel->db_rec ) + ARBEL_PAGE_SIZE ) ); - if ( ( rc = arbel_map_vpm ( arbel, arbel_cmd_map_icm, - arbel->db_rec_offset, - virt_to_phys ( arbel->db_rec ), - ARBEL_PAGE_SIZE ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not map doorbell UAR: %s\n", - arbel, strerror ( rc ) ); - goto err_map_doorbell; - } - - /* Initialise doorbell records */ - memset ( arbel->db_rec, 0, ARBEL_PAGE_SIZE ); - db_rec = &arbel->db_rec[ARBEL_GROUP_SEPARATOR_DOORBELL]; - MLX_FILL_1 ( &db_rec->qp, 1, res, ARBEL_UAR_RES_GROUP_SEP ); - - return 0; - - memset ( &unmap_icm, 0, sizeof ( unmap_icm ) ); - MLX_FILL_1 ( &unmap_icm, 1, value, arbel->db_rec_offset ); - arbel_cmd_unmap_icm ( arbel, 1, &unmap_icm ); - err_map_doorbell: - memset ( &unmap_icm, 0, sizeof ( unmap_icm ) ); - arbel_cmd_unmap_icm ( arbel, ( arbel->icm_len / ARBEL_PAGE_SIZE ), - &unmap_icm ); - err_map_icm: - arbel_cmd_unmap_icm_aux ( arbel ); - err_map_icm_aux: - free_dma ( arbel->db_rec, ARBEL_PAGE_SIZE ); - arbel->db_rec= NULL; - err_alloc_doorbell: - err_alloc_icm: - err_set_icm_size: - return rc; -} - -/** - * Free ICM - * - * @v arbel Arbel device - */ -static void arbel_free_icm ( struct arbel *arbel ) { - struct arbelprm_scalar_parameter unmap_icm; - - memset ( &unmap_icm, 0, sizeof ( unmap_icm ) ); - MLX_FILL_1 ( &unmap_icm, 1, value, arbel->db_rec_offset ); - arbel_cmd_unmap_icm ( arbel, 1, &unmap_icm ); - memset ( &unmap_icm, 0, sizeof ( unmap_icm ) ); - arbel_cmd_unmap_icm ( arbel, ( arbel->icm_len / ARBEL_PAGE_SIZE ), - &unmap_icm ); - arbel_cmd_unmap_icm_aux ( arbel ); - free_dma ( arbel->db_rec, ARBEL_PAGE_SIZE ); - arbel->db_rec = NULL; -} - -/*************************************************************************** - * - * Initialisation and teardown - * - *************************************************************************** - */ - -/** - * Reset device - * - * @v arbel Arbel device - */ -static void arbel_reset ( struct arbel *arbel ) { - struct pci_device *pci = arbel->pci; - struct pci_config_backup backup; - static const uint8_t backup_exclude[] = - PCI_CONFIG_BACKUP_EXCLUDE ( 0x58, 0x5c ); - uint16_t vendor; - unsigned int i; - - /* Perform device reset and preserve PCI configuration */ - pci_backup ( pci, &backup, backup_exclude ); - writel ( ARBEL_RESET_MAGIC, - ( arbel->config + ARBEL_RESET_OFFSET ) ); - for ( i = 0 ; i < ARBEL_RESET_WAIT_TIME_MS ; i++ ) { - mdelay ( 1 ); - pci_read_config_word ( pci, PCI_VENDOR_ID, &vendor ); - if ( vendor != 0xffff ) - break; - } - pci_restore ( pci, &backup, backup_exclude ); -} - -/** - * Set up memory protection table - * - * @v arbel Arbel device - * @ret rc Return status code - */ -static int arbel_setup_mpt ( struct arbel *arbel ) { - struct arbelprm_mpt mpt; - uint32_t key; - int rc; - - /* Derive key */ - key = ( arbel->limits.reserved_mrws | ARBEL_MKEY_PREFIX ); - arbel->lkey = ( ( key << 8 ) | ( key >> 24 ) ); - - /* Initialise memory protection table */ - memset ( &mpt, 0, sizeof ( mpt ) ); - MLX_FILL_7 ( &mpt, 0, - a, 1, - rw, 1, - rr, 1, - lw, 1, - lr, 1, - pa, 1, - r_w, 1 ); - MLX_FILL_1 ( &mpt, 2, mem_key, key ); - MLX_FILL_2 ( &mpt, 3, - pd, ARBEL_GLOBAL_PD, - rae, 1 ); - MLX_FILL_1 ( &mpt, 6, reg_wnd_len_h, 0xffffffffUL ); - MLX_FILL_1 ( &mpt, 7, reg_wnd_len_l, 0xffffffffUL ); - if ( ( rc = arbel_cmd_sw2hw_mpt ( arbel, arbel->limits.reserved_mrws, - &mpt ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not set up MPT: %s\n", - arbel, strerror ( rc ) ); - return rc; - } - - return 0; -} - -/** - * Configure special queue pairs - * - * @v arbel Arbel device - * @ret rc Return status code - */ -static int arbel_configure_special_qps ( struct arbel *arbel ) { - unsigned int smi_qpn_base; - unsigned int gsi_qpn_base; - int rc; - - /* Special QP block must be aligned on an even number */ - arbel->special_qpn_base = ( ( arbel->limits.reserved_qps + 1 ) & ~1 ); - arbel->qpn_base = ( arbel->special_qpn_base + - ARBEL_NUM_SPECIAL_QPS ); - DBGC ( arbel, "Arbel %p special QPs at [%lx,%lx]\n", arbel, - arbel->special_qpn_base, ( arbel->qpn_base - 1 ) ); - smi_qpn_base = arbel->special_qpn_base; - gsi_qpn_base = ( smi_qpn_base + 2 ); - - /* Issue commands to configure special QPs */ - if ( ( rc = arbel_cmd_conf_special_qp ( arbel, 0, - smi_qpn_base ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not configure SMI QPs: %s\n", - arbel, strerror ( rc ) ); - return rc; - } - if ( ( rc = arbel_cmd_conf_special_qp ( arbel, 1, - gsi_qpn_base ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not configure GSI QPs: %s\n", - arbel, strerror ( rc ) ); - return rc; - } - - return 0; -} - -/** - * Start Arbel device - * - * @v arbel Arbel device - * @v running Firmware is already running - * @ret rc Return status code - */ -static int arbel_start ( struct arbel *arbel, int running ) { - struct arbelprm_init_hca init_hca; - unsigned int i; - int rc; - - /* Start firmware if not already running */ - if ( ! running ) { - if ( ( rc = arbel_start_firmware ( arbel ) ) != 0 ) - goto err_start_firmware; - } - - /* Allocate ICM */ - memset ( &init_hca, 0, sizeof ( init_hca ) ); - if ( ( rc = arbel_alloc_icm ( arbel, &init_hca ) ) != 0 ) - goto err_alloc_icm; - - /* Initialise HCA */ - if ( ( rc = arbel_cmd_init_hca ( arbel, &init_hca ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not initialise HCA: %s\n", - arbel, strerror ( rc ) ); - goto err_init_hca; - } - - /* Set up memory protection */ - if ( ( rc = arbel_setup_mpt ( arbel ) ) != 0 ) - goto err_setup_mpt; - for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) - arbel->ibdev[i]->rdma_key = arbel->lkey; - - /* Set up event queue */ - if ( ( rc = arbel_create_eq ( arbel ) ) != 0 ) - goto err_create_eq; - - /* Configure special QPs */ - if ( ( rc = arbel_configure_special_qps ( arbel ) ) != 0 ) - goto err_conf_special_qps; - - return 0; - - err_conf_special_qps: - arbel_destroy_eq ( arbel ); - err_create_eq: - err_setup_mpt: - arbel_cmd_close_hca ( arbel ); - err_init_hca: - arbel_free_icm ( arbel ); - err_alloc_icm: - arbel_stop_firmware ( arbel ); - err_start_firmware: - return rc; -} - -/** - * Stop Arbel device - * - * @v arbel Arbel device - */ -static void arbel_stop ( struct arbel *arbel ) { - arbel_destroy_eq ( arbel ); - arbel_cmd_close_hca ( arbel ); - arbel_free_icm ( arbel ); - arbel_stop_firmware ( arbel ); - arbel_reset ( arbel ); -} - -/** - * Open Arbel device - * - * @v arbel Arbel device - * @ret rc Return status code - */ -static int arbel_open ( struct arbel *arbel ) { - int rc; - - /* Start device if applicable */ - if ( arbel->open_count == 0 ) { - if ( ( rc = arbel_start ( arbel, 0 ) ) != 0 ) - return rc; - } - - /* Increment open counter */ - arbel->open_count++; - - return 0; -} - -/** - * Close Arbel device - * - * @v arbel Arbel device - */ -static void arbel_close ( struct arbel *arbel ) { - - /* Decrement open counter */ - assert ( arbel->open_count != 0 ); - arbel->open_count--; - - /* Stop device if applicable */ - if ( arbel->open_count == 0 ) - arbel_stop ( arbel ); -} - -/*************************************************************************** - * - * Infiniband link-layer operations - * - *************************************************************************** - */ - -/** - * Initialise Infiniband link - * - * @v ibdev Infiniband device - * @ret rc Return status code - */ -static int arbel_ib_open ( struct ib_device *ibdev ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbelprm_init_ib init_ib; - int rc; - - /* Open hardware */ - if ( ( rc = arbel_open ( arbel ) ) != 0 ) - goto err_open; - - /* Initialise IB */ - memset ( &init_ib, 0, sizeof ( init_ib ) ); - MLX_FILL_3 ( &init_ib, 0, - mtu_cap, ARBEL_MTU_2048, - port_width_cap, 3, - vl_cap, 1 ); - MLX_FILL_1 ( &init_ib, 1, max_gid, 1 ); - MLX_FILL_1 ( &init_ib, 2, max_pkey, 64 ); - if ( ( rc = arbel_cmd_init_ib ( arbel, ibdev->port, - &init_ib ) ) != 0 ) { - DBGC ( arbel, "Arbel %p port %d could not intialise IB: %s\n", - arbel, ibdev->port, strerror ( rc ) ); - goto err_init_ib; - } - - /* Update MAD parameters */ - ib_smc_update ( ibdev, arbel_mad ); - - return 0; - - err_init_ib: - arbel_close ( arbel ); - err_open: - return rc; -} - -/** - * Close Infiniband link - * - * @v ibdev Infiniband device - */ -static void arbel_ib_close ( struct ib_device *ibdev ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - int rc; - - /* Close IB */ - if ( ( rc = arbel_cmd_close_ib ( arbel, ibdev->port ) ) != 0 ) { - DBGC ( arbel, "Arbel %p port %d could not close IB: %s\n", - arbel, ibdev->port, strerror ( rc ) ); - /* Nothing we can do about this */ - } - - /* Close hardware */ - arbel_close ( arbel ); -} - -/** - * Inform embedded subnet management agent of a received MAD - * - * @v ibdev Infiniband device - * @v mad MAD - * @ret rc Return status code - */ -static int arbel_inform_sma ( struct ib_device *ibdev, union ib_mad *mad ) { - int rc; - - /* Send the MAD to the embedded SMA */ - if ( ( rc = arbel_mad ( ibdev, mad ) ) != 0 ) - return rc; - - /* Update parameters held in software */ - ib_smc_update ( ibdev, arbel_mad ); - - return 0; -} - -/*************************************************************************** - * - * Multicast group operations - * - *************************************************************************** - */ - -/** - * Attach to multicast group - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @v gid Multicast GID - * @ret rc Return status code - */ -static int arbel_mcast_attach ( struct ib_device *ibdev, - struct ib_queue_pair *qp, - union ib_gid *gid ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbelprm_mgm_hash hash; - struct arbelprm_mgm_entry mgm; - unsigned int index; - int rc; - - /* Generate hash table index */ - if ( ( rc = arbel_cmd_mgid_hash ( arbel, gid, &hash ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not hash GID: %s\n", - arbel, strerror ( rc ) ); - return rc; - } - index = MLX_GET ( &hash, hash ); - - /* Check for existing hash table entry */ - if ( ( rc = arbel_cmd_read_mgm ( arbel, index, &mgm ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not read MGM %#x: %s\n", - arbel, index, strerror ( rc ) ); - return rc; - } - if ( MLX_GET ( &mgm, mgmqp_0.qi ) != 0 ) { - /* FIXME: this implementation allows only a single QP - * per multicast group, and doesn't handle hash - * collisions. Sufficient for IPoIB but may need to - * be extended in future. - */ - DBGC ( arbel, "Arbel %p MGID index %#x already in use\n", - arbel, index ); - return -EBUSY; - } - - /* Update hash table entry */ - MLX_FILL_2 ( &mgm, 8, - mgmqp_0.qpn_i, qp->qpn, - mgmqp_0.qi, 1 ); - memcpy ( &mgm.u.dwords[4], gid, sizeof ( *gid ) ); - if ( ( rc = arbel_cmd_write_mgm ( arbel, index, &mgm ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not write MGM %#x: %s\n", - arbel, index, strerror ( rc ) ); - return rc; - } - - return 0; -} - -/** - * Detach from multicast group - * - * @v ibdev Infiniband device - * @v qp Queue pair - * @v gid Multicast GID - */ -static void arbel_mcast_detach ( struct ib_device *ibdev, - struct ib_queue_pair *qp __unused, - union ib_gid *gid ) { - struct arbel *arbel = ib_get_drvdata ( ibdev ); - struct arbelprm_mgm_hash hash; - struct arbelprm_mgm_entry mgm; - unsigned int index; - int rc; - - /* Generate hash table index */ - if ( ( rc = arbel_cmd_mgid_hash ( arbel, gid, &hash ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not hash GID: %s\n", - arbel, strerror ( rc ) ); - return; - } - index = MLX_GET ( &hash, hash ); - - /* Clear hash table entry */ - memset ( &mgm, 0, sizeof ( mgm ) ); - if ( ( rc = arbel_cmd_write_mgm ( arbel, index, &mgm ) ) != 0 ) { - DBGC ( arbel, "Arbel %p could not write MGM %#x: %s\n", - arbel, index, strerror ( rc ) ); - return; - } -} - -/** Arbel Infiniband operations */ -static struct ib_device_operations arbel_ib_operations = { - .create_cq = arbel_create_cq, - .destroy_cq = arbel_destroy_cq, - .create_qp = arbel_create_qp, - .modify_qp = arbel_modify_qp, - .destroy_qp = arbel_destroy_qp, - .post_send = arbel_post_send, - .post_recv = arbel_post_recv, - .poll_cq = arbel_poll_cq, - .poll_eq = arbel_poll_eq, - .open = arbel_ib_open, - .close = arbel_ib_close, - .mcast_attach = arbel_mcast_attach, - .mcast_detach = arbel_mcast_detach, - .set_port_info = arbel_inform_sma, - .set_pkey_table = arbel_inform_sma, -}; - -/*************************************************************************** - * - * PCI interface - * - *************************************************************************** - */ - -/** - * Allocate Arbel device - * - * @ret arbel Arbel device - */ -static struct arbel * arbel_alloc ( void ) { - struct arbel *arbel; - - /* Allocate Arbel device */ - arbel = zalloc ( sizeof ( *arbel ) ); - if ( ! arbel ) - goto err_arbel; - - /* Allocate space for mailboxes */ - arbel->mailbox_in = malloc_dma ( ARBEL_MBOX_SIZE, ARBEL_MBOX_ALIGN ); - if ( ! arbel->mailbox_in ) - goto err_mailbox_in; - arbel->mailbox_out = malloc_dma ( ARBEL_MBOX_SIZE, ARBEL_MBOX_ALIGN ); - if ( ! arbel->mailbox_out ) - goto err_mailbox_out; - - return arbel; - - free_dma ( arbel->mailbox_out, ARBEL_MBOX_SIZE ); - err_mailbox_out: - free_dma ( arbel->mailbox_in, ARBEL_MBOX_SIZE ); - err_mailbox_in: - free ( arbel ); - err_arbel: - return NULL; -} - -/** - * Free Arbel device - * - * @v arbel Arbel device - */ -static void arbel_free ( struct arbel *arbel ) { - - ufree ( arbel->icm ); - ufree ( arbel->firmware_area ); - free_dma ( arbel->mailbox_out, ARBEL_MBOX_SIZE ); - free_dma ( arbel->mailbox_in, ARBEL_MBOX_SIZE ); - free ( arbel ); -} - -/** - * Probe PCI device - * - * @v pci PCI device - * @v id PCI ID - * @ret rc Return status code - */ -static int arbel_probe ( struct pci_device *pci ) { - struct arbel *arbel; - struct ib_device *ibdev; - int i; - int rc; - - /* Allocate Arbel device */ - arbel = arbel_alloc(); - if ( ! arbel ) { - rc = -ENOMEM; - goto err_alloc; - } - pci_set_drvdata ( pci, arbel ); - arbel->pci = pci; - - /* Allocate Infiniband devices */ - for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) { - ibdev = alloc_ibdev ( 0 ); - if ( ! ibdev ) { - rc = -ENOMEM; - goto err_alloc_ibdev; - } - arbel->ibdev[i] = ibdev; - ibdev->op = &arbel_ib_operations; - ibdev->dev = &pci->dev; - ibdev->port = ( ARBEL_PORT_BASE + i ); - ib_set_drvdata ( ibdev, arbel ); - } - - /* Fix up PCI device */ - adjust_pci_device ( pci ); - - /* Get PCI BARs */ - arbel->config = ioremap ( pci_bar_start ( pci, ARBEL_PCI_CONFIG_BAR ), - ARBEL_PCI_CONFIG_BAR_SIZE ); - arbel->uar = ioremap ( ( pci_bar_start ( pci, ARBEL_PCI_UAR_BAR ) + - ARBEL_PCI_UAR_IDX * ARBEL_PCI_UAR_SIZE ), - ARBEL_PCI_UAR_SIZE ); - - /* Reset device */ - arbel_reset ( arbel ); - - /* Start firmware */ - if ( ( rc = arbel_start_firmware ( arbel ) ) != 0 ) - goto err_start_firmware; - - /* Get device limits */ - if ( ( rc = arbel_get_limits ( arbel ) ) != 0 ) - goto err_get_limits; - - /* Start device */ - if ( ( rc = arbel_start ( arbel, 1 ) ) != 0 ) - goto err_start; - - /* Initialise parameters using SMC */ - for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) - ib_smc_init ( arbel->ibdev[i], arbel_mad ); - - /* Register Infiniband devices */ - for ( i = 0 ; i < ARBEL_NUM_PORTS ; i++ ) { - if ( ( rc = register_ibdev ( arbel->ibdev[i] ) ) != 0 ) { - DBGC ( arbel, "Arbel %p port %d could not register IB " - "device: %s\n", arbel, - arbel->ibdev[i]->port, strerror ( rc ) ); - goto err_register_ibdev; - } - } - - /* Leave device quiescent until opened */ - if ( arbel->open_count == 0 ) - arbel_stop ( arbel ); - - return 0; - - i = ARBEL_NUM_PORTS; - err_register_ibdev: - for ( i-- ; i >= 0 ; i-- ) - unregister_ibdev ( arbel->ibdev[i] ); - arbel_stop ( arbel ); - err_start: - err_get_limits: - arbel_stop_firmware ( arbel ); - err_start_firmware: - i = ARBEL_NUM_PORTS; - err_alloc_ibdev: - for ( i-- ; i >= 0 ; i-- ) - ibdev_put ( arbel->ibdev[i] ); - arbel_free ( arbel ); - err_alloc: - return rc; -} - -/** - * Remove PCI device - * - * @v pci PCI device - */ -static void arbel_remove ( struct pci_device *pci ) { - struct arbel *arbel = pci_get_drvdata ( pci ); - int i; - - for ( i = ( ARBEL_NUM_PORTS - 1 ) ; i >= 0 ; i-- ) - unregister_ibdev ( arbel->ibdev[i] ); - for ( i = ( ARBEL_NUM_PORTS - 1 ) ; i >= 0 ; i-- ) - ibdev_put ( arbel->ibdev[i] ); - arbel_free ( arbel ); -} - -static struct pci_device_id arbel_nics[] = { - PCI_ROM ( 0x15b3, 0x6282, "mt25218", "MT25218 HCA driver", 0 ), - PCI_ROM ( 0x15b3, 0x6274, "mt25204", "MT25204 HCA driver", 0 ), -}; - -struct pci_driver arbel_driver __pci_driver = { - .ids = arbel_nics, - .id_count = ( sizeof ( arbel_nics ) / sizeof ( arbel_nics[0] ) ), - .probe = arbel_probe, - .remove = arbel_remove, -}; |