diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/qla1280.c | 387 |
1 files changed, 166 insertions, 221 deletions
diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c index 3aeb68bcb7ac..146d540f6281 100644 --- a/drivers/scsi/qla1280.c +++ b/drivers/scsi/qla1280.c @@ -1310,14 +1310,7 @@ qla1280_done(struct scsi_qla_host *ha) } /* Release memory used for this I/O */ - if (cmd->use_sg) { - pci_unmap_sg(ha->pdev, cmd->request_buffer, - cmd->use_sg, cmd->sc_data_direction); - } else if (cmd->request_bufflen) { - pci_unmap_single(ha->pdev, sp->saved_dma_handle, - cmd->request_bufflen, - cmd->sc_data_direction); - } + scsi_dma_unmap(cmd); /* Call the mid-level driver interrupt handler */ CMD_HANDLE(sp->cmd) = (unsigned char *)INVALID_HANDLE; @@ -1406,14 +1399,14 @@ qla1280_return_status(struct response * sts, struct scsi_cmnd *cp) break; case CS_DATA_UNDERRUN: - if ((cp->request_bufflen - residual_length) < + if ((scsi_bufflen(cp) - residual_length) < cp->underflow) { printk(KERN_WARNING "scsi: Underflow detected - retrying " "command.\n"); host_status = DID_ERROR; } else { - cp->resid = residual_length; + scsi_set_resid(cp, residual_length); host_status = DID_OK; } break; @@ -2775,33 +2768,28 @@ qla1280_64bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp) struct device_reg __iomem *reg = ha->iobase; struct scsi_cmnd *cmd = sp->cmd; cmd_a64_entry_t *pkt; - struct scatterlist *sg = NULL, *s; __le32 *dword_ptr; dma_addr_t dma_handle; int status = 0; int cnt; int req_cnt; - u16 seg_cnt; + int seg_cnt; u8 dir; ENTER("qla1280_64bit_start_scsi:"); /* Calculate number of entries and segments required. */ req_cnt = 1; - if (cmd->use_sg) { - sg = (struct scatterlist *) cmd->request_buffer; - seg_cnt = pci_map_sg(ha->pdev, sg, cmd->use_sg, - cmd->sc_data_direction); - + seg_cnt = scsi_dma_map(cmd); + if (seg_cnt > 0) { if (seg_cnt > 2) { req_cnt += (seg_cnt - 2) / 5; if ((seg_cnt - 2) % 5) req_cnt++; } - } else if (cmd->request_bufflen) { /* If data transfer. */ - seg_cnt = 1; - } else { - seg_cnt = 0; + } else if (seg_cnt < 0) { + status = 1; + goto out; } if ((req_cnt + 2) >= ha->req_q_cnt) { @@ -2889,124 +2877,104 @@ qla1280_64bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp) * Load data segments. */ if (seg_cnt) { /* If data transfer. */ + struct scatterlist *sg, *s; int remseg = seg_cnt; + + sg = scsi_sglist(cmd); + /* Setup packet address segment pointer. */ dword_ptr = (u32 *)&pkt->dseg_0_address; - if (cmd->use_sg) { /* If scatter gather */ - /* Load command entry data segments. */ - for_each_sg(sg, s, seg_cnt, cnt) { - if (cnt == 2) + /* Load command entry data segments. */ + for_each_sg(sg, s, seg_cnt, cnt) { + if (cnt == 2) + break; + + dma_handle = sg_dma_address(s); +#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2) + if (ha->flags.use_pci_vchannel) + sn_pci_set_vchan(ha->pdev, + (unsigned long *)&dma_handle, + SCSI_BUS_32(cmd)); +#endif + *dword_ptr++ = + cpu_to_le32(pci_dma_lo32(dma_handle)); + *dword_ptr++ = + cpu_to_le32(pci_dma_hi32(dma_handle)); + *dword_ptr++ = cpu_to_le32(sg_dma_len(s)); + dprintk(3, "S/G Segment phys_addr=%x %x, len=0x%x\n", + cpu_to_le32(pci_dma_hi32(dma_handle)), + cpu_to_le32(pci_dma_lo32(dma_handle)), + cpu_to_le32(sg_dma_len(sg_next(s)))); + remseg--; + } + dprintk(5, "qla1280_64bit_start_scsi: Scatter/gather " + "command packet data - b %i, t %i, l %i \n", + SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), + SCSI_LUN_32(cmd)); + qla1280_dump_buffer(5, (char *)pkt, + REQUEST_ENTRY_SIZE); + + /* + * Build continuation packets. + */ + dprintk(3, "S/G Building Continuation...seg_cnt=0x%x " + "remains\n", seg_cnt); + + while (remseg > 0) { + /* Update sg start */ + sg = s; + /* Adjust ring index. */ + ha->req_ring_index++; + if (ha->req_ring_index == REQUEST_ENTRY_CNT) { + ha->req_ring_index = 0; + ha->request_ring_ptr = + ha->request_ring; + } else + ha->request_ring_ptr++; + + pkt = (cmd_a64_entry_t *)ha->request_ring_ptr; + + /* Zero out packet. */ + memset(pkt, 0, REQUEST_ENTRY_SIZE); + + /* Load packet defaults. */ + ((struct cont_a64_entry *) pkt)->entry_type = + CONTINUE_A64_TYPE; + ((struct cont_a64_entry *) pkt)->entry_count = 1; + ((struct cont_a64_entry *) pkt)->sys_define = + (uint8_t)ha->req_ring_index; + /* Setup packet address segment pointer. */ + dword_ptr = + (u32 *)&((struct cont_a64_entry *) pkt)->dseg_0_address; + + /* Load continuation entry data segments. */ + for_each_sg(sg, s, remseg, cnt) { + if (cnt == 5) break; dma_handle = sg_dma_address(s); #if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2) if (ha->flags.use_pci_vchannel) sn_pci_set_vchan(ha->pdev, - (unsigned long *)&dma_handle, + (unsigned long *)&dma_handle, SCSI_BUS_32(cmd)); #endif *dword_ptr++ = cpu_to_le32(pci_dma_lo32(dma_handle)); *dword_ptr++ = cpu_to_le32(pci_dma_hi32(dma_handle)); - *dword_ptr++ = cpu_to_le32(sg_dma_len(s)); - dprintk(3, "S/G Segment phys_addr=%x %x, len=0x%x\n", + *dword_ptr++ = + cpu_to_le32(sg_dma_len(s)); + dprintk(3, "S/G Segment Cont. phys_addr=%x %x, len=0x%x\n", cpu_to_le32(pci_dma_hi32(dma_handle)), cpu_to_le32(pci_dma_lo32(dma_handle)), - cpu_to_le32(sg_dma_len(sg_next(s)))); - remseg--; + cpu_to_le32(sg_dma_len(s))); } - dprintk(5, "qla1280_64bit_start_scsi: Scatter/gather " - "command packet data - b %i, t %i, l %i \n", - SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), - SCSI_LUN_32(cmd)); - qla1280_dump_buffer(5, (char *)pkt, - REQUEST_ENTRY_SIZE); - - /* - * Build continuation packets. - */ - dprintk(3, "S/G Building Continuation...seg_cnt=0x%x " - "remains\n", seg_cnt); - - while (remseg > 0) { - /* Update sg start */ - sg = s; - /* Adjust ring index. */ - ha->req_ring_index++; - if (ha->req_ring_index == REQUEST_ENTRY_CNT) { - ha->req_ring_index = 0; - ha->request_ring_ptr = - ha->request_ring; - } else - ha->request_ring_ptr++; - - pkt = (cmd_a64_entry_t *)ha->request_ring_ptr; - - /* Zero out packet. */ - memset(pkt, 0, REQUEST_ENTRY_SIZE); - - /* Load packet defaults. */ - ((struct cont_a64_entry *) pkt)->entry_type = - CONTINUE_A64_TYPE; - ((struct cont_a64_entry *) pkt)->entry_count = 1; - ((struct cont_a64_entry *) pkt)->sys_define = - (uint8_t)ha->req_ring_index; - /* Setup packet address segment pointer. */ - dword_ptr = - (u32 *)&((struct cont_a64_entry *) pkt)->dseg_0_address; - - /* Load continuation entry data segments. */ - for_each_sg(sg, s, remseg, cnt) { - if (cnt == 5) - break; - dma_handle = sg_dma_address(s); -#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2) - if (ha->flags.use_pci_vchannel) - sn_pci_set_vchan(ha->pdev, - (unsigned long *)&dma_handle, - SCSI_BUS_32(cmd)); -#endif - *dword_ptr++ = - cpu_to_le32(pci_dma_lo32(dma_handle)); - *dword_ptr++ = - cpu_to_le32(pci_dma_hi32(dma_handle)); - *dword_ptr++ = - cpu_to_le32(sg_dma_len(s)); - dprintk(3, "S/G Segment Cont. phys_addr=%x %x, len=0x%x\n", - cpu_to_le32(pci_dma_hi32(dma_handle)), - cpu_to_le32(pci_dma_lo32(dma_handle)), - cpu_to_le32(sg_dma_len(s))); - } - remseg -= cnt; - dprintk(5, "qla1280_64bit_start_scsi: " - "continuation packet data - b %i, t " - "%i, l %i \n", SCSI_BUS_32(cmd), - SCSI_TCN_32(cmd), SCSI_LUN_32(cmd)); - qla1280_dump_buffer(5, (char *)pkt, - REQUEST_ENTRY_SIZE); - } - } else { /* No scatter gather data transfer */ - dma_handle = pci_map_single(ha->pdev, - cmd->request_buffer, - cmd->request_bufflen, - cmd->sc_data_direction); - - sp->saved_dma_handle = dma_handle; -#if defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_SGI_SN2) - if (ha->flags.use_pci_vchannel) - sn_pci_set_vchan(ha->pdev, - (unsigned long *)&dma_handle, - SCSI_BUS_32(cmd)); -#endif - *dword_ptr++ = cpu_to_le32(pci_dma_lo32(dma_handle)); - *dword_ptr++ = cpu_to_le32(pci_dma_hi32(dma_handle)); - *dword_ptr = cpu_to_le32(cmd->request_bufflen); - - dprintk(5, "qla1280_64bit_start_scsi: No scatter/" - "gather command packet data - b %i, t %i, " - "l %i \n", SCSI_BUS_32(cmd), SCSI_TCN_32(cmd), - SCSI_LUN_32(cmd)); + remseg -= cnt; + dprintk(5, "qla1280_64bit_start_scsi: " + "continuation packet data - b %i, t " + "%i, l %i \n", SCSI_BUS_32(cmd), + SCSI_TCN_32(cmd), SCSI_LUN_32(cmd)); qla1280_dump_buffer(5, (char *)pkt, REQUEST_ENTRY_SIZE); } @@ -3068,12 +3036,11 @@ qla1280_32bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp) struct device_reg __iomem *reg = ha->iobase; struct scsi_cmnd *cmd = sp->cmd; struct cmd_entry *pkt; - struct scatterlist *sg = NULL, *s; __le32 *dword_ptr; int status = 0; int cnt; int req_cnt; - uint16_t seg_cnt; + int seg_cnt; dma_addr_t dma_handle; u8 dir; @@ -3083,18 +3050,8 @@ qla1280_32bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp) cmd->cmnd[0]); /* Calculate number of entries and segments required. */ - req_cnt = 1; - if (cmd->use_sg) { - /* - * We must build an SG list in adapter format, as the kernel's - * SG list cannot be used directly because of data field size - * (__alpha__) differences and the kernel SG list uses virtual - * addresses where we need physical addresses. - */ - sg = (struct scatterlist *) cmd->request_buffer; - seg_cnt = pci_map_sg(ha->pdev, sg, cmd->use_sg, - cmd->sc_data_direction); - + seg_cnt = scsi_dma_map(cmd); + if (seg_cnt) { /* * if greater than four sg entries then we need to allocate * continuation entries @@ -3106,14 +3063,9 @@ qla1280_32bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp) } dprintk(3, "S/G Transfer cmd=%p seg_cnt=0x%x, req_cnt=%x\n", cmd, seg_cnt, req_cnt); - } else if (cmd->request_bufflen) { /* If data transfer. */ - dprintk(3, "No S/G transfer t=%x cmd=%p len=%x CDB=%x\n", - SCSI_TCN_32(cmd), cmd, cmd->request_bufflen, - cmd->cmnd[0]); - seg_cnt = 1; - } else { - /* dprintk(1, "No data transfer \n"); */ - seg_cnt = 0; + } else if (seg_cnt < 0) { + status = 1; + goto out; } if ((req_cnt + 2) >= ha->req_q_cnt) { @@ -3194,91 +3146,84 @@ qla1280_32bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp) * Load data segments. */ if (seg_cnt) { + struct scatterlist *sg, *s; int remseg = seg_cnt; + + sg = scsi_sglist(cmd); + /* Setup packet address segment pointer. */ dword_ptr = &pkt->dseg_0_address; - if (cmd->use_sg) { /* If scatter gather */ - dprintk(3, "Building S/G data segments..\n"); - qla1280_dump_buffer(1, (char *)sg, 4 * 16); + dprintk(3, "Building S/G data segments..\n"); + qla1280_dump_buffer(1, (char *)sg, 4 * 16); + + /* Load command entry data segments. */ + for_each_sg(sg, s, seg_cnt, cnt) { + if (cnt == 4) + break; + *dword_ptr++ = + cpu_to_le32(pci_dma_lo32(sg_dma_address(s))); + *dword_ptr++ = cpu_to_le32(sg_dma_len(s)); + dprintk(3, "S/G Segment phys_addr=0x%lx, len=0x%x\n", + (pci_dma_lo32(sg_dma_address(s))), + (sg_dma_len(s))); + remseg--; + } + /* + * Build continuation packets. + */ + dprintk(3, "S/G Building Continuation" + "...seg_cnt=0x%x remains\n", seg_cnt); + while (remseg > 0) { + /* Continue from end point */ + sg = s; + /* Adjust ring index. */ + ha->req_ring_index++; + if (ha->req_ring_index == REQUEST_ENTRY_CNT) { + ha->req_ring_index = 0; + ha->request_ring_ptr = + ha->request_ring; + } else + ha->request_ring_ptr++; + + pkt = (struct cmd_entry *)ha->request_ring_ptr; + + /* Zero out packet. */ + memset(pkt, 0, REQUEST_ENTRY_SIZE); + + /* Load packet defaults. */ + ((struct cont_entry *) pkt)-> + entry_type = CONTINUE_TYPE; + ((struct cont_entry *) pkt)->entry_count = 1; - /* Load command entry data segments. */ - for_each_sg(sg, s, seg_cnt, cnt) { - if (cnt == 4) + ((struct cont_entry *) pkt)->sys_define = + (uint8_t) ha->req_ring_index; + + /* Setup packet address segment pointer. */ + dword_ptr = + &((struct cont_entry *) pkt)->dseg_0_address; + + /* Load continuation entry data segments. */ + for_each_sg(sg, s, remseg, cnt) { + if (cnt == 7) break; *dword_ptr++ = cpu_to_le32(pci_dma_lo32(sg_dma_address(s))); - *dword_ptr++ = cpu_to_le32(sg_dma_len(s)); - dprintk(3, "S/G Segment phys_addr=0x%lx, len=0x%x\n", - (pci_dma_lo32(sg_dma_address(s))), - (sg_dma_len(s))); - remseg--; - } - /* - * Build continuation packets. - */ - dprintk(3, "S/G Building Continuation" - "...seg_cnt=0x%x remains\n", seg_cnt); - while (remseg > 0) { - /* Continue from end point */ - sg = s; - /* Adjust ring index. */ - ha->req_ring_index++; - if (ha->req_ring_index == REQUEST_ENTRY_CNT) { - ha->req_ring_index = 0; - ha->request_ring_ptr = - ha->request_ring; - } else - ha->request_ring_ptr++; - - pkt = (struct cmd_entry *)ha->request_ring_ptr; - - /* Zero out packet. */ - memset(pkt, 0, REQUEST_ENTRY_SIZE); - - /* Load packet defaults. */ - ((struct cont_entry *) pkt)-> - entry_type = CONTINUE_TYPE; - ((struct cont_entry *) pkt)->entry_count = 1; - - ((struct cont_entry *) pkt)->sys_define = - (uint8_t) ha->req_ring_index; - - /* Setup packet address segment pointer. */ - dword_ptr = - &((struct cont_entry *) pkt)->dseg_0_address; - - /* Load continuation entry data segments. */ - for_each_sg(sg, s, remseg, cnt) { - if (cnt == 7) - break; - *dword_ptr++ = - cpu_to_le32(pci_dma_lo32(sg_dma_address(s))); - *dword_ptr++ = - cpu_to_le32(sg_dma_len(s)); - dprintk(1, - "S/G Segment Cont. phys_addr=0x%x, " - "len=0x%x\n", - cpu_to_le32(pci_dma_lo32(sg_dma_address(s))), - cpu_to_le32(sg_dma_len(s))); - } - remseg -= cnt; - dprintk(5, "qla1280_32bit_start_scsi: " - "continuation packet data - " - "scsi(%i:%i:%i)\n", SCSI_BUS_32(cmd), - SCSI_TCN_32(cmd), SCSI_LUN_32(cmd)); - qla1280_dump_buffer(5, (char *)pkt, - REQUEST_ENTRY_SIZE); + *dword_ptr++ = + cpu_to_le32(sg_dma_len(s)); + dprintk(1, + "S/G Segment Cont. phys_addr=0x%x, " + "len=0x%x\n", + cpu_to_le32(pci_dma_lo32(sg_dma_address(s))), + cpu_to_le32(sg_dma_len(s))); } - } else { /* No S/G data transfer */ - dma_handle = pci_map_single(ha->pdev, - cmd->request_buffer, - cmd->request_bufflen, - cmd->sc_data_direction); - sp->saved_dma_handle = dma_handle; - - *dword_ptr++ = cpu_to_le32(pci_dma_lo32(dma_handle)); - *dword_ptr = cpu_to_le32(cmd->request_bufflen); + remseg -= cnt; + dprintk(5, "qla1280_32bit_start_scsi: " + "continuation packet data - " + "scsi(%i:%i:%i)\n", SCSI_BUS_32(cmd), + SCSI_TCN_32(cmd), SCSI_LUN_32(cmd)); + qla1280_dump_buffer(5, (char *)pkt, + REQUEST_ENTRY_SIZE); } } else { /* No data transfer at all */ dprintk(5, "qla1280_32bit_start_scsi: No data, command " @@ -4086,9 +4031,9 @@ __qla1280_print_scsi_cmd(struct scsi_cmnd *cmd) for (i = 0; i < cmd->cmd_len; i++) { printk("0x%02x ", cmd->cmnd[i]); } - printk(" seg_cnt =%d\n", cmd->use_sg); + printk(" seg_cnt =%d\n", scsi_sg_count(cmd)); printk(" request buffer=0x%p, request buffer len=0x%x\n", - cmd->request_buffer, cmd->request_bufflen); + scsi_sglist(cmd), scsi_bufflen(cmd)); /* if (cmd->use_sg) { sg = (struct scatterlist *) cmd->request_buffer; |