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authorAndrew Vasquez <andrew.vasquez@qlogic.com>2005-07-06 13:31:17 -0400
committerJames Bottomley <jejb@mulgrave.(none)>2005-07-14 11:00:07 -0400
commit2b6c0cee90cecbce35fb6d65fed94f22e5063be0 (patch)
treeb0bc0240e95d72d67cf3f23ee84375b629128063 /drivers
parent459c537807bd72cce7b007fb218bb5a658a6c3c1 (diff)
[SCSI] qla2xxx: Add ISP24xx IOCB manipulation routines.
Add ISP24xx IOCB manipulation routines. Add appropriate glue-code for ISP24xx support while manipulting IOCB packets. Add an ISP24xx specific 'start_scsi' routine due to command-type-7 layout changes. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/qla2xxx/qla_gbl.h1
-rw-r--r--drivers/scsi/qla2xxx/qla_inline.h13
-rw-r--r--drivers/scsi/qla2xxx/qla_iocb.c325
3 files changed, 323 insertions, 16 deletions
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index 0dd732486e24..15a05682f012 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -94,6 +94,7 @@ extern uint16_t qla2x00_calc_iocbs_64(uint16_t);
94extern void qla2x00_build_scsi_iocbs_32(srb_t *, cmd_entry_t *, uint16_t); 94extern void qla2x00_build_scsi_iocbs_32(srb_t *, cmd_entry_t *, uint16_t);
95extern void qla2x00_build_scsi_iocbs_64(srb_t *, cmd_entry_t *, uint16_t); 95extern void qla2x00_build_scsi_iocbs_64(srb_t *, cmd_entry_t *, uint16_t);
96extern int qla2x00_start_scsi(srb_t *sp); 96extern int qla2x00_start_scsi(srb_t *sp);
97extern int qla24xx_start_scsi(srb_t *sp);
97int qla2x00_marker(scsi_qla_host_t *, uint16_t, uint16_t, uint8_t); 98int qla2x00_marker(scsi_qla_host_t *, uint16_t, uint16_t, uint8_t);
98int __qla2x00_marker(scsi_qla_host_t *, uint16_t, uint16_t, uint8_t); 99int __qla2x00_marker(scsi_qla_host_t *, uint16_t, uint16_t, uint8_t);
99 100
diff --git a/drivers/scsi/qla2xxx/qla_inline.h b/drivers/scsi/qla2xxx/qla_inline.h
index 6cf7036ccf4c..a4357f0aeea3 100644
--- a/drivers/scsi/qla2xxx/qla_inline.h
+++ b/drivers/scsi/qla2xxx/qla_inline.h
@@ -236,6 +236,19 @@ qla2x00_delete_timer_from_cmd(srb_t *sp)
236 } 236 }
237} 237}
238 238
239static inline uint8_t *host_to_fcp_swap(uint8_t *, uint32_t);
240static inline uint8_t *
241host_to_fcp_swap(uint8_t *fcp, uint32_t bsize)
242{
243 uint32_t *ifcp = (uint32_t *) fcp;
244 uint32_t *ofcp = (uint32_t *) fcp;
245 uint32_t iter = bsize >> 2;
246
247 for (; iter ; iter--)
248 *ofcp++ = swab32(*ifcp++);
249
250 return fcp;
251}
239 252
240static inline int qla2x00_is_reserved_id(scsi_qla_host_t *, uint16_t); 253static inline int qla2x00_is_reserved_id(scsi_qla_host_t *, uint16_t);
241static inline int 254static inline int
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index 846dbfe26be3..4343c65523a5 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -468,29 +468,37 @@ queuing_error:
468 * 468 *
469 * Returns non-zero if a failure occured, else zero. 469 * Returns non-zero if a failure occured, else zero.
470 */ 470 */
471int 471int
472__qla2x00_marker(scsi_qla_host_t *ha, uint16_t loop_id, uint16_t lun, 472__qla2x00_marker(scsi_qla_host_t *ha, uint16_t loop_id, uint16_t lun,
473 uint8_t type) 473 uint8_t type)
474{ 474{
475 mrk_entry_t *pkt; 475 mrk_entry_t *mrk;
476 struct mrk_entry_24xx *mrk24;
476 477
477 pkt = (mrk_entry_t *)qla2x00_req_pkt(ha); 478 mrk24 = NULL;
478 if (pkt == NULL) { 479 mrk = (mrk_entry_t *)qla2x00_req_pkt(ha);
479 DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__)); 480 if (mrk == NULL) {
481 DEBUG2_3(printk("%s(%ld): failed to allocate Marker IOCB.\n",
482 __func__, ha->host_no));
480 483
481 return (QLA_FUNCTION_FAILED); 484 return (QLA_FUNCTION_FAILED);
482 } 485 }
483 486
484 pkt->entry_type = MARKER_TYPE; 487 mrk->entry_type = MARKER_TYPE;
485 pkt->modifier = type; 488 mrk->modifier = type;
486
487 if (type != MK_SYNC_ALL) { 489 if (type != MK_SYNC_ALL) {
488 pkt->lun = cpu_to_le16(lun); 490 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
489 SET_TARGET_ID(ha, pkt->target, loop_id); 491 mrk24 = (struct mrk_entry_24xx *) mrk;
492 mrk24->nport_handle = cpu_to_le16(loop_id);
493 mrk24->lun[1] = LSB(lun);
494 mrk24->lun[2] = MSB(lun);
495 } else {
496 SET_TARGET_ID(ha, mrk->target, loop_id);
497 mrk->lun = cpu_to_le16(lun);
498 }
490 } 499 }
491 wmb(); 500 wmb();
492 501
493 /* Issue command to ISP */
494 qla2x00_isp_cmd(ha); 502 qla2x00_isp_cmd(ha);
495 503
496 return (QLA_SUCCESS); 504 return (QLA_SUCCESS);
@@ -521,7 +529,7 @@ qla2x00_marker(scsi_qla_host_t *ha, uint16_t loop_id, uint16_t lun,
521static request_t * 529static request_t *
522qla2x00_req_pkt(scsi_qla_host_t *ha) 530qla2x00_req_pkt(scsi_qla_host_t *ha)
523{ 531{
524 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; 532 device_reg_t __iomem *reg = ha->iobase;
525 request_t *pkt = NULL; 533 request_t *pkt = NULL;
526 uint16_t cnt; 534 uint16_t cnt;
527 uint32_t *dword_ptr; 535 uint32_t *dword_ptr;
@@ -532,7 +540,12 @@ qla2x00_req_pkt(scsi_qla_host_t *ha)
532 for (timer = HZ; timer; timer--) { 540 for (timer = HZ; timer; timer--) {
533 if ((req_cnt + 2) >= ha->req_q_cnt) { 541 if ((req_cnt + 2) >= ha->req_q_cnt) {
534 /* Calculate number of free request entries. */ 542 /* Calculate number of free request entries. */
535 cnt = qla2x00_debounce_register(ISP_REQ_Q_OUT(ha, reg)); 543 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
544 cnt = (uint16_t)RD_REG_DWORD(
545 &reg->isp24.req_q_out);
546 else
547 cnt = qla2x00_debounce_register(
548 ISP_REQ_Q_OUT(ha, &reg->isp));
536 if (ha->req_ring_index < cnt) 549 if (ha->req_ring_index < cnt)
537 ha->req_q_cnt = cnt - ha->req_ring_index; 550 ha->req_q_cnt = cnt - ha->req_ring_index;
538 else 551 else
@@ -586,7 +599,7 @@ qla2x00_req_pkt(scsi_qla_host_t *ha)
586void 599void
587qla2x00_isp_cmd(scsi_qla_host_t *ha) 600qla2x00_isp_cmd(scsi_qla_host_t *ha)
588{ 601{
589 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp; 602 device_reg_t __iomem *reg = ha->iobase;
590 603
591 DEBUG5(printk("%s(): IOCB data:\n", __func__)); 604 DEBUG5(printk("%s(): IOCB data:\n", __func__));
592 DEBUG5(qla2x00_dump_buffer( 605 DEBUG5(qla2x00_dump_buffer(
@@ -601,6 +614,286 @@ qla2x00_isp_cmd(scsi_qla_host_t *ha)
601 ha->request_ring_ptr++; 614 ha->request_ring_ptr++;
602 615
603 /* Set chip new ring index. */ 616 /* Set chip new ring index. */
604 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), ha->req_ring_index); 617 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
605 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */ 618 WRT_REG_DWORD(&reg->isp24.req_q_in, ha->req_ring_index);
619 RD_REG_DWORD_RELAXED(&reg->isp24.req_q_in);
620 } else {
621 WRT_REG_WORD(ISP_REQ_Q_IN(ha, &reg->isp), ha->req_ring_index);
622 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, &reg->isp));
623 }
624
625}
626
627/**
628 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and
629 * Continuation Type 1 IOCBs to allocate.
630 *
631 * @dsds: number of data segment decriptors needed
632 *
633 * Returns the number of IOCB entries needed to store @dsds.
634 */
635static inline uint16_t
636qla24xx_calc_iocbs(uint16_t dsds)
637{
638 uint16_t iocbs;
639
640 iocbs = 1;
641 if (dsds > 1) {
642 iocbs += (dsds - 1) / 5;
643 if ((dsds - 1) % 5)
644 iocbs++;
645 }
646 return iocbs;
647}
648
649/**
650 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
651 * IOCB types.
652 *
653 * @sp: SRB command to process
654 * @cmd_pkt: Command type 3 IOCB
655 * @tot_dsds: Total number of segments to transfer
656 */
657static inline void
658qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
659 uint16_t tot_dsds)
660{
661 uint16_t avail_dsds;
662 uint32_t *cur_dsd;
663 scsi_qla_host_t *ha;
664 struct scsi_cmnd *cmd;
665
666 cmd = sp->cmd;
667
668 /* Update entry type to indicate Command Type 3 IOCB */
669 *((uint32_t *)(&cmd_pkt->entry_type)) =
670 __constant_cpu_to_le32(COMMAND_TYPE_7);
671
672 /* No data transfer */
673 if (cmd->request_bufflen == 0 || cmd->sc_data_direction == DMA_NONE) {
674 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
675 return;
676 }
677
678 ha = sp->ha;
679
680 /* Set transfer direction */
681 if (cmd->sc_data_direction == DMA_TO_DEVICE)
682 cmd_pkt->task_mgmt_flags =
683 __constant_cpu_to_le16(TMF_WRITE_DATA);
684 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
685 cmd_pkt->task_mgmt_flags =
686 __constant_cpu_to_le16(TMF_READ_DATA);
687
688 /* One DSD is available in the Command Type 3 IOCB */
689 avail_dsds = 1;
690 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
691
692 /* Load data segments */
693 if (cmd->use_sg != 0) {
694 struct scatterlist *cur_seg;
695 struct scatterlist *end_seg;
696
697 cur_seg = (struct scatterlist *)cmd->request_buffer;
698 end_seg = cur_seg + tot_dsds;
699 while (cur_seg < end_seg) {
700 dma_addr_t sle_dma;
701 cont_a64_entry_t *cont_pkt;
702
703 /* Allocate additional continuation packets? */
704 if (avail_dsds == 0) {
705 /*
706 * Five DSDs are available in the Continuation
707 * Type 1 IOCB.
708 */
709 cont_pkt = qla2x00_prep_cont_type1_iocb(ha);
710 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
711 avail_dsds = 5;
712 }
713
714 sle_dma = sg_dma_address(cur_seg);
715 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
716 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
717 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg));
718 avail_dsds--;
719
720 cur_seg++;
721 }
722 } else {
723 *cur_dsd++ = cpu_to_le32(LSD(sp->dma_handle));
724 *cur_dsd++ = cpu_to_le32(MSD(sp->dma_handle));
725 *cur_dsd++ = cpu_to_le32(cmd->request_bufflen);
726 }
727}
728
729
730/**
731 * qla24xx_start_scsi() - Send a SCSI command to the ISP
732 * @sp: command to send to the ISP
733 *
734 * Returns non-zero if a failure occured, else zero.
735 */
736int
737qla24xx_start_scsi(srb_t *sp)
738{
739 int ret;
740 unsigned long flags;
741 scsi_qla_host_t *ha;
742 struct scsi_cmnd *cmd;
743 uint32_t *clr_ptr;
744 uint32_t index;
745 uint32_t handle;
746 struct cmd_type_7 *cmd_pkt;
747 struct scatterlist *sg;
748 uint16_t cnt;
749 uint16_t req_cnt;
750 uint16_t tot_dsds;
751 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
752 char tag[2];
753
754 /* Setup device pointers. */
755 ret = 0;
756 ha = sp->ha;
757 reg = &ha->iobase->isp24;
758 cmd = sp->cmd;
759 /* So we know we haven't pci_map'ed anything yet */
760 tot_dsds = 0;
761
762 /* Send marker if required */
763 if (ha->marker_needed != 0) {
764 if (qla2x00_marker(ha, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) {
765 return QLA_FUNCTION_FAILED;
766 }
767 ha->marker_needed = 0;
768 }
769
770 /* Acquire ring specific lock */
771 spin_lock_irqsave(&ha->hardware_lock, flags);
772
773 /* Check for room in outstanding command list. */
774 handle = ha->current_outstanding_cmd;
775 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
776 handle++;
777 if (handle == MAX_OUTSTANDING_COMMANDS)
778 handle = 1;
779 if (ha->outstanding_cmds[handle] == 0)
780 break;
781 }
782 if (index == MAX_OUTSTANDING_COMMANDS)
783 goto queuing_error;
784
785 /* Map the sg table so we have an accurate count of sg entries needed */
786 if (cmd->use_sg) {
787 sg = (struct scatterlist *) cmd->request_buffer;
788 tot_dsds = pci_map_sg(ha->pdev, sg, cmd->use_sg,
789 cmd->sc_data_direction);
790 if (tot_dsds == 0)
791 goto queuing_error;
792 } else if (cmd->request_bufflen) {
793 dma_addr_t req_dma;
794
795 req_dma = pci_map_single(ha->pdev, cmd->request_buffer,
796 cmd->request_bufflen, cmd->sc_data_direction);
797 if (dma_mapping_error(req_dma))
798 goto queuing_error;
799
800 sp->dma_handle = req_dma;
801 tot_dsds = 1;
802 }
803
804 req_cnt = qla24xx_calc_iocbs(tot_dsds);
805 if (ha->req_q_cnt < (req_cnt + 2)) {
806 cnt = (uint16_t)RD_REG_DWORD_RELAXED(&reg->req_q_out);
807 if (ha->req_ring_index < cnt)
808 ha->req_q_cnt = cnt - ha->req_ring_index;
809 else
810 ha->req_q_cnt = ha->request_q_length -
811 (ha->req_ring_index - cnt);
812 }
813 if (ha->req_q_cnt < (req_cnt + 2)) {
814 if (cmd->use_sg)
815 pci_unmap_sg(ha->pdev, sg, cmd->use_sg,
816 cmd->sc_data_direction);
817 goto queuing_error;
818 }
819
820 /* Build command packet. */
821 ha->current_outstanding_cmd = handle;
822 ha->outstanding_cmds[handle] = sp;
823 sp->ha = ha;
824 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
825 ha->req_q_cnt -= req_cnt;
826
827 cmd_pkt = (struct cmd_type_7 *)ha->request_ring_ptr;
828 cmd_pkt->handle = handle;
829
830 /* Zero out remaining portion of packet. */
831 clr_ptr = (uint32_t *)cmd_pkt + 2;
832 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
833 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
834
835 /* Set NPORT-ID and LUN number*/
836 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
837 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
838 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
839 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
840
841 cmd_pkt->lun[1] = LSB(sp->cmd->device->lun);
842 cmd_pkt->lun[2] = MSB(sp->cmd->device->lun);
843
844 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */
845 if (scsi_populate_tag_msg(cmd, tag)) {
846 switch (tag[0]) {
847 case MSG_HEAD_TAG:
848 cmd_pkt->task = TSK_HEAD_OF_QUEUE;
849 break;
850 case MSG_ORDERED_TAG:
851 cmd_pkt->task = TSK_ORDERED;
852 break;
853 }
854 }
855
856 /* Load SCSI command packet. */
857 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
858 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
859
860 cmd_pkt->byte_count = cpu_to_le32((uint32_t)cmd->request_bufflen);
861
862 /* Build IOCB segments */
863 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
864
865 /* Set total data segment count. */
866 cmd_pkt->entry_count = (uint8_t)req_cnt;
867 wmb();
868
869 /* Adjust ring index. */
870 ha->req_ring_index++;
871 if (ha->req_ring_index == ha->request_q_length) {
872 ha->req_ring_index = 0;
873 ha->request_ring_ptr = ha->request_ring;
874 } else
875 ha->request_ring_ptr++;
876
877 sp->flags |= SRB_DMA_VALID;
878 sp->state = SRB_ACTIVE_STATE;
879
880 /* Set chip new ring index. */
881 WRT_REG_DWORD(&reg->req_q_in, ha->req_ring_index);
882 RD_REG_DWORD_RELAXED(&reg->req_q_in); /* PCI Posting. */
883
884 spin_unlock_irqrestore(&ha->hardware_lock, flags);
885 return QLA_SUCCESS;
886
887queuing_error:
888 if (cmd->use_sg && tot_dsds) {
889 sg = (struct scatterlist *) cmd->request_buffer;
890 pci_unmap_sg(ha->pdev, sg, cmd->use_sg,
891 cmd->sc_data_direction);
892 } else if (tot_dsds) {
893 pci_unmap_single(ha->pdev, sp->dma_handle,
894 cmd->request_bufflen, cmd->sc_data_direction);
895 }
896 spin_unlock_irqrestore(&ha->hardware_lock, flags);
897
898 return QLA_FUNCTION_FAILED;
606} 899}