diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_iocb.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_iocb.c | 407 |
1 files changed, 367 insertions, 40 deletions
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 221ad8907893..58e49a3e1de8 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -12,7 +12,6 @@ #include <scsi/scsi_tcq.h> -static void qla25xx_set_que(srb_t *, struct rsp_que **); /** * qla2x00_get_cmd_direction() - Determine control_flag data direction. * @cmd: SCSI command @@ -143,7 +142,7 @@ qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req) return (cont_pkt); } -static inline int +inline int qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts) { struct scsi_cmnd *cmd = GET_CMD_SP(sp); @@ -693,10 +692,11 @@ qla24xx_calc_dsd_lists(uint16_t dsds) * @sp: SRB command to process * @cmd_pkt: Command type 3 IOCB * @tot_dsds: Total number of segments to transfer + * @req: pointer to request queue */ -static inline void +inline void qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, - uint16_t tot_dsds) + uint16_t tot_dsds, struct req_que *req) { uint16_t avail_dsds; uint32_t *cur_dsd; @@ -745,7 +745,7 @@ qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt, * Five DSDs are available in the Continuation * Type 1 IOCB. */ - cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req); + cont_pkt = qla2x00_prep_cont_type1_iocb(vha, req); cur_dsd = (uint32_t *)cont_pkt->dseg_0_address; avail_dsds = 5; } @@ -845,24 +845,7 @@ qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt, } } -struct qla2_sgx { - dma_addr_t dma_addr; /* OUT */ - uint32_t dma_len; /* OUT */ - - uint32_t tot_bytes; /* IN */ - struct scatterlist *cur_sg; /* IN */ - - /* for book keeping, bzero on initial invocation */ - uint32_t bytes_consumed; - uint32_t num_bytes; - uint32_t tot_partial; - - /* for debugging */ - uint32_t num_sg; - srb_t *sp; -}; - -static int +int qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx, uint32_t *partial) { @@ -1207,7 +1190,7 @@ qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp, * @cmd_pkt: Command type 3 IOCB * @tot_dsds: Total number of segments to transfer */ -static inline int +inline int qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt, uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts) { @@ -1436,8 +1419,8 @@ qla24xx_start_scsi(srb_t *sp) struct qla_hw_data *ha = vha->hw; /* Setup device pointers. */ - qla25xx_set_que(sp, &rsp); req = vha->req; + rsp = req->rsp; /* So we know we haven't pci_map'ed anything yet */ tot_dsds = 0; @@ -1523,12 +1506,10 @@ qla24xx_start_scsi(srb_t *sp) cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); /* Build IOCB segments */ - qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); + qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req); /* Set total data segment count. */ cmd_pkt->entry_count = (uint8_t)req_cnt; - /* Specify response queue number where completion should happen */ - cmd_pkt->entry_status = (uint8_t) rsp->id; wmb(); /* Adjust ring index. */ req->ring_index++; @@ -1597,9 +1578,8 @@ qla24xx_dif_start_scsi(srb_t *sp) } /* Setup device pointers. */ - - qla25xx_set_que(sp, &rsp); req = vha->req; + rsp = req->rsp; /* So we know we haven't pci_map'ed anything yet */ tot_dsds = 0; @@ -1764,18 +1744,365 @@ queuing_error: return QLA_FUNCTION_FAILED; } - -static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) +/** + * qla2xxx_start_scsi_mq() - Send a SCSI command to the ISP + * @sp: command to send to the ISP + * + * Returns non-zero if a failure occurred, else zero. + */ +static int +qla2xxx_start_scsi_mq(srb_t *sp) { + int nseg; + unsigned long flags; + uint32_t *clr_ptr; + uint32_t index; + uint32_t handle; + struct cmd_type_7 *cmd_pkt; + uint16_t cnt; + uint16_t req_cnt; + uint16_t tot_dsds; + struct req_que *req = NULL; + struct rsp_que *rsp = NULL; struct scsi_cmnd *cmd = GET_CMD_SP(sp); - struct qla_hw_data *ha = sp->fcport->vha->hw; - int affinity = cmd->request->cpu; + struct scsi_qla_host *vha = sp->fcport->vha; + struct qla_hw_data *ha = vha->hw; + struct qla_qpair *qpair = sp->qpair; + + /* Setup qpair pointers */ + rsp = qpair->rsp; + req = qpair->req; + + /* So we know we haven't pci_map'ed anything yet */ + tot_dsds = 0; + + /* Send marker if required */ + if (vha->marker_needed != 0) { + if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != + QLA_SUCCESS) + return QLA_FUNCTION_FAILED; + vha->marker_needed = 0; + } + + /* Acquire qpair specific lock */ + spin_lock_irqsave(&qpair->qp_lock, flags); + + /* Check for room in outstanding command list. */ + handle = req->current_outstanding_cmd; + for (index = 1; index < req->num_outstanding_cmds; index++) { + handle++; + if (handle == req->num_outstanding_cmds) + handle = 1; + if (!req->outstanding_cmds[handle]) + break; + } + if (index == req->num_outstanding_cmds) + goto queuing_error; + + /* Map the sg table so we have an accurate count of sg entries needed */ + if (scsi_sg_count(cmd)) { + nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), + scsi_sg_count(cmd), cmd->sc_data_direction); + if (unlikely(!nseg)) + goto queuing_error; + } else + nseg = 0; + + tot_dsds = nseg; + req_cnt = qla24xx_calc_iocbs(vha, tot_dsds); + if (req->cnt < (req_cnt + 2)) { + cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : + RD_REG_DWORD_RELAXED(req->req_q_out); + if (req->ring_index < cnt) + req->cnt = cnt - req->ring_index; + else + req->cnt = req->length - + (req->ring_index - cnt); + if (req->cnt < (req_cnt + 2)) + goto queuing_error; + } + + /* Build command packet. */ + req->current_outstanding_cmd = handle; + req->outstanding_cmds[handle] = sp; + sp->handle = handle; + cmd->host_scribble = (unsigned char *)(unsigned long)handle; + req->cnt -= req_cnt; + + cmd_pkt = (struct cmd_type_7 *)req->ring_ptr; + cmd_pkt->handle = MAKE_HANDLE(req->id, handle); + + /* Zero out remaining portion of packet. */ + /* tagged queuing modifier -- default is TSK_SIMPLE (0). */ + clr_ptr = (uint32_t *)cmd_pkt + 2; + memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); + cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); + + /* Set NPORT-ID and LUN number*/ + cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); + cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; + cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; + cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; + cmd_pkt->vp_index = sp->fcport->vha->vp_idx; + + int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); + host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); + + cmd_pkt->task = TSK_SIMPLE; + + /* Load SCSI command packet. */ + memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len); + host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb)); + + cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); + + /* Build IOCB segments */ + qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req); + + /* Set total data segment count. */ + cmd_pkt->entry_count = (uint8_t)req_cnt; + wmb(); + /* Adjust ring index. */ + req->ring_index++; + if (req->ring_index == req->length) { + req->ring_index = 0; + req->ring_ptr = req->ring; + } else + req->ring_ptr++; + + sp->flags |= SRB_DMA_VALID; + + /* Set chip new ring index. */ + WRT_REG_DWORD(req->req_q_in, req->ring_index); + + /* Manage unprocessed RIO/ZIO commands in response queue. */ + if (vha->flags.process_response_queue && + rsp->ring_ptr->signature != RESPONSE_PROCESSED) + qla24xx_process_response_queue(vha, rsp); + + spin_unlock_irqrestore(&qpair->qp_lock, flags); + return QLA_SUCCESS; + +queuing_error: + if (tot_dsds) + scsi_dma_unmap(cmd); + + spin_unlock_irqrestore(&qpair->qp_lock, flags); + + return QLA_FUNCTION_FAILED; +} + + +/** + * qla2xxx_dif_start_scsi_mq() - Send a SCSI command to the ISP + * @sp: command to send to the ISP + * + * Returns non-zero if a failure occurred, else zero. + */ +int +qla2xxx_dif_start_scsi_mq(srb_t *sp) +{ + int nseg; + unsigned long flags; + uint32_t *clr_ptr; + uint32_t index; + uint32_t handle; + uint16_t cnt; + uint16_t req_cnt = 0; + uint16_t tot_dsds; + uint16_t tot_prot_dsds; + uint16_t fw_prot_opts = 0; + struct req_que *req = NULL; + struct rsp_que *rsp = NULL; + struct scsi_cmnd *cmd = GET_CMD_SP(sp); + struct scsi_qla_host *vha = sp->fcport->vha; + struct qla_hw_data *ha = vha->hw; + struct cmd_type_crc_2 *cmd_pkt; + uint32_t status = 0; + struct qla_qpair *qpair = sp->qpair; + +#define QDSS_GOT_Q_SPACE BIT_0 + + /* Check for host side state */ + if (!qpair->online) { + cmd->result = DID_NO_CONNECT << 16; + return QLA_INTERFACE_ERROR; + } + + if (!qpair->difdix_supported && + scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { + cmd->result = DID_NO_CONNECT << 16; + return QLA_INTERFACE_ERROR; + } + + /* Only process protection or >16 cdb in this routine */ + if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) { + if (cmd->cmd_len <= 16) + return qla2xxx_start_scsi_mq(sp); + } + + /* Setup qpair pointers */ + rsp = qpair->rsp; + req = qpair->req; + + /* So we know we haven't pci_map'ed anything yet */ + tot_dsds = 0; + + /* Send marker if required */ + if (vha->marker_needed != 0) { + if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) != + QLA_SUCCESS) + return QLA_FUNCTION_FAILED; + vha->marker_needed = 0; + } + + /* Acquire ring specific lock */ + spin_lock_irqsave(&qpair->qp_lock, flags); + + /* Check for room in outstanding command list. */ + handle = req->current_outstanding_cmd; + for (index = 1; index < req->num_outstanding_cmds; index++) { + handle++; + if (handle == req->num_outstanding_cmds) + handle = 1; + if (!req->outstanding_cmds[handle]) + break; + } + + if (index == req->num_outstanding_cmds) + goto queuing_error; + + /* Compute number of required data segments */ + /* Map the sg table so we have an accurate count of sg entries needed */ + if (scsi_sg_count(cmd)) { + nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd), + scsi_sg_count(cmd), cmd->sc_data_direction); + if (unlikely(!nseg)) + goto queuing_error; + else + sp->flags |= SRB_DMA_VALID; + + if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || + (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { + struct qla2_sgx sgx; + uint32_t partial; + + memset(&sgx, 0, sizeof(struct qla2_sgx)); + sgx.tot_bytes = scsi_bufflen(cmd); + sgx.cur_sg = scsi_sglist(cmd); + sgx.sp = sp; + + nseg = 0; + while (qla24xx_get_one_block_sg( + cmd->device->sector_size, &sgx, &partial)) + nseg++; + } + } else + nseg = 0; + + /* number of required data segments */ + tot_dsds = nseg; + + /* Compute number of required protection segments */ + if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) { + nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd), + scsi_prot_sg_count(cmd), cmd->sc_data_direction); + if (unlikely(!nseg)) + goto queuing_error; + else + sp->flags |= SRB_CRC_PROT_DMA_VALID; + + if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) || + (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) { + nseg = scsi_bufflen(cmd) / cmd->device->sector_size; + } + } else { + nseg = 0; + } + + req_cnt = 1; + /* Total Data and protection sg segment(s) */ + tot_prot_dsds = nseg; + tot_dsds += nseg; + if (req->cnt < (req_cnt + 2)) { + cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr : + RD_REG_DWORD_RELAXED(req->req_q_out); + if (req->ring_index < cnt) + req->cnt = cnt - req->ring_index; + else + req->cnt = req->length - + (req->ring_index - cnt); + if (req->cnt < (req_cnt + 2)) + goto queuing_error; + } + + status |= QDSS_GOT_Q_SPACE; + + /* Build header part of command packet (excluding the OPCODE). */ + req->current_outstanding_cmd = handle; + req->outstanding_cmds[handle] = sp; + sp->handle = handle; + cmd->host_scribble = (unsigned char *)(unsigned long)handle; + req->cnt -= req_cnt; + + /* Fill-in common area */ + cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr; + cmd_pkt->handle = MAKE_HANDLE(req->id, handle); + + clr_ptr = (uint32_t *)cmd_pkt + 2; + memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8); + + /* Set NPORT-ID and LUN number*/ + cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id); + cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa; + cmd_pkt->port_id[1] = sp->fcport->d_id.b.area; + cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain; - if (ha->flags.cpu_affinity_enabled && affinity >= 0 && - affinity < ha->max_rsp_queues - 1) - *rsp = ha->rsp_q_map[affinity + 1]; - else - *rsp = ha->rsp_q_map[0]; + int_to_scsilun(cmd->device->lun, &cmd_pkt->lun); + host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun)); + + /* Total Data and protection segment(s) */ + cmd_pkt->dseg_count = cpu_to_le16(tot_dsds); + + /* Build IOCB segments and adjust for data protection segments */ + if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *) + req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) != + QLA_SUCCESS) + goto queuing_error; + + cmd_pkt->entry_count = (uint8_t)req_cnt; + cmd_pkt->timeout = cpu_to_le16(0); + wmb(); + + /* Adjust ring index. */ + req->ring_index++; + if (req->ring_index == req->length) { + req->ring_index = 0; + req->ring_ptr = req->ring; + } else + req->ring_ptr++; + + /* Set chip new ring index. */ + WRT_REG_DWORD(req->req_q_in, req->ring_index); + + /* Manage unprocessed RIO/ZIO commands in response queue. */ + if (vha->flags.process_response_queue && + rsp->ring_ptr->signature != RESPONSE_PROCESSED) + qla24xx_process_response_queue(vha, rsp); + + spin_unlock_irqrestore(&qpair->qp_lock, flags); + + return QLA_SUCCESS; + +queuing_error: + if (status & QDSS_GOT_Q_SPACE) { + req->outstanding_cmds[handle] = NULL; + req->cnt += req_cnt; + } + /* Cleanup will be performed by the caller (queuecommand) */ + + spin_unlock_irqrestore(&qpair->qp_lock, flags); + return QLA_FUNCTION_FAILED; } /* Generic Control-SRB manipulation functions. */ @@ -2664,7 +2991,7 @@ sufficient_dsds: cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd)); /* Build IOCB segments */ - qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds); + qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req); /* Set total data segment count. */ cmd_pkt->entry_count = (uint8_t)req_cnt; |