diff options
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_iocb.c')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_iocb.c | 134 |
1 files changed, 16 insertions, 118 deletions
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index 5d0e99c2b522..370646f7b3ff 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -11,8 +11,6 @@ #include <scsi/scsi_tcq.h> -static request_t *qla2x00_req_pkt(struct scsi_qla_host *, struct req_que *, - struct rsp_que *rsp); static void qla2x00_isp_cmd(struct scsi_qla_host *, struct req_que *); static void qla25xx_set_que(srb_t *, struct rsp_que **); @@ -474,7 +472,7 @@ __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); mrk24 = NULL; - mrk = (mrk_entry_t *)qla2x00_req_pkt(vha, req, rsp); + mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, 0); if (mrk == NULL) { DEBUG2_3(printk("%s(%ld): failed to allocate Marker IOCB.\n", __func__, base_vha->host_no)); @@ -521,84 +519,6 @@ qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req, } /** - * qla2x00_req_pkt() - Retrieve a request packet from the request ring. - * @ha: HA context - * - * Note: The caller must hold the hardware lock before calling this routine. - * - * Returns NULL if function failed, else, a pointer to the request packet. - */ -static request_t * -qla2x00_req_pkt(struct scsi_qla_host *vha, struct req_que *req, - struct rsp_que *rsp) -{ - struct qla_hw_data *ha = vha->hw; - device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); - request_t *pkt = NULL; - uint16_t cnt; - uint32_t *dword_ptr; - uint32_t timer; - uint16_t req_cnt = 1; - - /* Wait 1 second for slot. */ - for (timer = HZ; timer; timer--) { - if ((req_cnt + 2) >= req->cnt) { - /* Calculate number of free request entries. */ - if (ha->mqenable) - cnt = (uint16_t) - RD_REG_DWORD(®->isp25mq.req_q_out); - else { - if (IS_QLA82XX(ha)) - cnt = (uint16_t)RD_REG_DWORD( - ®->isp82.req_q_out); - else if (IS_FWI2_CAPABLE(ha)) - cnt = (uint16_t)RD_REG_DWORD( - ®->isp24.req_q_out); - else - cnt = qla2x00_debounce_register( - ISP_REQ_Q_OUT(ha, ®->isp)); - } - if (req->ring_index < cnt) - req->cnt = cnt - req->ring_index; - else - req->cnt = req->length - - (req->ring_index - cnt); - } - /* If room for request in request ring. */ - if ((req_cnt + 2) < req->cnt) { - req->cnt--; - pkt = req->ring_ptr; - - /* Zero out packet. */ - dword_ptr = (uint32_t *)pkt; - for (cnt = 0; cnt < REQUEST_ENTRY_SIZE / 4; cnt++) - *dword_ptr++ = 0; - - /* Set entry count. */ - pkt->entry_count = 1; - - break; - } - - /* Release ring specific lock */ - spin_unlock_irq(&ha->hardware_lock); - - udelay(2); /* 2 us */ - - /* Check for pending interrupts. */ - /* During init we issue marker directly */ - if (!vha->marker_needed && !vha->flags.init_done) - qla2x00_poll(rsp); - spin_lock_irq(&ha->hardware_lock); - } - if (!pkt) { - DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__)); - } - - return (pkt); -} - -/** * qla2x00_isp_cmd() - Modify the request ring pointer. * @ha: HA context * @@ -1559,11 +1479,9 @@ static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp) } /* Generic Control-SRB manipulation functions. */ - -static void * -qla2x00_alloc_iocbs(srb_t *sp) +void * +qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp) { - scsi_qla_host_t *vha = sp->fcport->vha; struct qla_hw_data *ha = vha->hw; struct req_que *req = ha->req_q_map[0]; device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id); @@ -1573,6 +1491,10 @@ qla2x00_alloc_iocbs(srb_t *sp) pkt = NULL; req_cnt = 1; + handle = 0; + + if (!sp) + goto skip_cmd_array; /* Check for room in outstanding command list. */ handle = req->current_outstanding_cmd; @@ -1586,10 +1508,18 @@ qla2x00_alloc_iocbs(srb_t *sp) if (index == MAX_OUTSTANDING_COMMANDS) goto queuing_error; + /* Prep command array. */ + req->current_outstanding_cmd = handle; + req->outstanding_cmds[handle] = sp; + sp->handle = handle; + +skip_cmd_array: /* Check for room on request queue. */ if (req->cnt < req_cnt) { if (ha->mqenable) cnt = RD_REG_DWORD(®->isp25mq.req_q_out); + else if (IS_QLA82XX(ha)) + cnt = RD_REG_DWORD(®->isp82.req_q_out); else if (IS_FWI2_CAPABLE(ha)) cnt = RD_REG_DWORD(®->isp24.req_q_out); else @@ -1606,15 +1536,11 @@ qla2x00_alloc_iocbs(srb_t *sp) goto queuing_error; /* Prep packet */ - req->current_outstanding_cmd = handle; - req->outstanding_cmds[handle] = sp; req->cnt -= req_cnt; - pkt = req->ring_ptr; memset(pkt, 0, REQUEST_ENTRY_SIZE); pkt->entry_count = req_cnt; pkt->handle = handle; - sp->handle = handle; queuing_error: return pkt; @@ -1795,31 +1721,6 @@ qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk) } static void -qla24xx_marker_iocb(srb_t *sp, struct mrk_entry_24xx *mrk) -{ - uint16_t lun; - uint8_t modif; - struct fc_port *fcport = sp->fcport; - scsi_qla_host_t *vha = fcport->vha; - struct srb_ctx *ctx = sp->ctx; - struct srb_iocb *iocb = ctx->u.iocb_cmd; - struct req_que *req = vha->req; - - lun = iocb->u.marker.lun; - modif = iocb->u.marker.modif; - mrk->entry_type = MARKER_TYPE; - mrk->modifier = modif; - if (modif != MK_SYNC_ALL) { - mrk->nport_handle = cpu_to_le16(fcport->loop_id); - mrk->lun[1] = LSB(lun); - mrk->lun[2] = MSB(lun); - host_to_fcp_swap(mrk->lun, sizeof(mrk->lun)); - mrk->vp_index = vha->vp_idx; - mrk->handle = MAKE_HANDLE(req->id, mrk->handle); - } -} - -static void qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb) { struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job; @@ -1945,7 +1846,7 @@ qla2x00_start_sp(srb_t *sp) rval = QLA_FUNCTION_FAILED; spin_lock_irqsave(&ha->hardware_lock, flags); - pkt = qla2x00_alloc_iocbs(sp); + pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp); if (!pkt) goto done; @@ -1976,9 +1877,6 @@ qla2x00_start_sp(srb_t *sp) case SRB_TM_CMD: qla24xx_tm_iocb(sp, pkt); break; - case SRB_MARKER_CMD: - qla24xx_marker_iocb(sp, pkt); - break; default: break; } |