2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2008 QLogic Corporation
5 * See LICENSE.qla2xxx for copyright and licensing details.
9 #include <linux/blkdev.h>
10 #include <linux/delay.h>
12 #include <scsi/scsi_tcq.h>
14 static request_t *qla2x00_req_pkt(struct scsi_qla_host *, struct req_que *,
16 static void qla2x00_isp_cmd(struct scsi_qla_host *, struct req_que *);
18 static void qla25xx_set_que(srb_t *, struct rsp_que **);
20 * qla2x00_get_cmd_direction() - Determine control_flag data direction.
23 * Returns the proper CF_* direction based on CDB.
25 static inline uint16_t
26 qla2x00_get_cmd_direction(srb_t *sp)
32 /* Set transfer direction */
33 if (sp->cmd->sc_data_direction == DMA_TO_DEVICE) {
35 sp->fcport->vha->hw->qla_stats.output_bytes +=
36 scsi_bufflen(sp->cmd);
37 } else if (sp->cmd->sc_data_direction == DMA_FROM_DEVICE) {
39 sp->fcport->vha->hw->qla_stats.input_bytes +=
40 scsi_bufflen(sp->cmd);
46 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and
47 * Continuation Type 0 IOCBs to allocate.
49 * @dsds: number of data segment decriptors needed
51 * Returns the number of IOCB entries needed to store @dsds.
54 qla2x00_calc_iocbs_32(uint16_t dsds)
60 iocbs += (dsds - 3) / 7;
68 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and
69 * Continuation Type 1 IOCBs to allocate.
71 * @dsds: number of data segment decriptors needed
73 * Returns the number of IOCB entries needed to store @dsds.
76 qla2x00_calc_iocbs_64(uint16_t dsds)
82 iocbs += (dsds - 2) / 5;
90 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB.
93 * Returns a pointer to the Continuation Type 0 IOCB packet.
95 static inline cont_entry_t *
96 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha)
98 cont_entry_t *cont_pkt;
99 struct req_que *req = vha->req;
100 /* Adjust ring index. */
102 if (req->ring_index == req->length) {
104 req->ring_ptr = req->ring;
109 cont_pkt = (cont_entry_t *)req->ring_ptr;
111 /* Load packet defaults. */
112 *((uint32_t *)(&cont_pkt->entry_type)) =
113 __constant_cpu_to_le32(CONTINUE_TYPE);
119 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB.
122 * Returns a pointer to the continuation type 1 IOCB packet.
124 static inline cont_a64_entry_t *
125 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha)
127 cont_a64_entry_t *cont_pkt;
129 struct req_que *req = vha->req;
130 /* Adjust ring index. */
132 if (req->ring_index == req->length) {
134 req->ring_ptr = req->ring;
139 cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
141 /* Load packet defaults. */
142 *((uint32_t *)(&cont_pkt->entry_type)) =
143 __constant_cpu_to_le32(CONTINUE_A64_TYPE);
149 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit
150 * capable IOCB types.
152 * @sp: SRB command to process
153 * @cmd_pkt: Command type 2 IOCB
154 * @tot_dsds: Total number of segments to transfer
156 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt,
161 scsi_qla_host_t *vha;
162 struct scsi_cmnd *cmd;
163 struct scatterlist *sg;
168 /* Update entry type to indicate Command Type 2 IOCB */
169 *((uint32_t *)(&cmd_pkt->entry_type)) =
170 __constant_cpu_to_le32(COMMAND_TYPE);
172 /* No data transfer */
173 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
174 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
178 vha = sp->fcport->vha;
179 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
181 /* Three DSDs are available in the Command Type 2 IOCB */
183 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
185 /* Load data segments */
186 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
187 cont_entry_t *cont_pkt;
189 /* Allocate additional continuation packets? */
190 if (avail_dsds == 0) {
192 * Seven DSDs are available in the Continuation
195 cont_pkt = qla2x00_prep_cont_type0_iocb(vha);
196 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address;
200 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg));
201 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
207 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit
208 * capable IOCB types.
210 * @sp: SRB command to process
211 * @cmd_pkt: Command type 3 IOCB
212 * @tot_dsds: Total number of segments to transfer
214 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt,
219 scsi_qla_host_t *vha;
220 struct scsi_cmnd *cmd;
221 struct scatterlist *sg;
226 /* Update entry type to indicate Command Type 3 IOCB */
227 *((uint32_t *)(&cmd_pkt->entry_type)) =
228 __constant_cpu_to_le32(COMMAND_A64_TYPE);
230 /* No data transfer */
231 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
232 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
236 vha = sp->fcport->vha;
237 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
239 /* Two DSDs are available in the Command Type 3 IOCB */
241 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
243 /* Load data segments */
244 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
246 cont_a64_entry_t *cont_pkt;
248 /* Allocate additional continuation packets? */
249 if (avail_dsds == 0) {
251 * Five DSDs are available in the Continuation
254 cont_pkt = qla2x00_prep_cont_type1_iocb(vha);
255 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
259 sle_dma = sg_dma_address(sg);
260 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
261 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
262 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
268 * qla2x00_start_scsi() - Send a SCSI command to the ISP
269 * @sp: command to send to the ISP
271 * Returns non-zero if a failure occurred, else zero.
274 qla2x00_start_scsi(srb_t *sp)
278 scsi_qla_host_t *vha;
279 struct scsi_cmnd *cmd;
283 cmd_entry_t *cmd_pkt;
287 struct device_reg_2xxx __iomem *reg;
288 struct qla_hw_data *ha;
292 /* Setup device pointers. */
294 vha = sp->fcport->vha;
296 reg = &ha->iobase->isp;
298 req = ha->req_q_map[0];
299 rsp = ha->rsp_q_map[0];
300 /* So we know we haven't pci_map'ed anything yet */
303 /* Send marker if required */
304 if (vha->marker_needed != 0) {
305 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL)
307 return (QLA_FUNCTION_FAILED);
308 vha->marker_needed = 0;
311 /* Acquire ring specific lock */
312 spin_lock_irqsave(&ha->hardware_lock, flags);
314 /* Check for room in outstanding command list. */
315 handle = req->current_outstanding_cmd;
316 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
318 if (handle == MAX_OUTSTANDING_COMMANDS)
320 if (!req->outstanding_cmds[handle])
323 if (index == MAX_OUTSTANDING_COMMANDS)
326 /* Map the sg table so we have an accurate count of sg entries needed */
327 if (scsi_sg_count(cmd)) {
328 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
329 scsi_sg_count(cmd), cmd->sc_data_direction);
337 /* Calculate the number of request entries needed. */
338 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds);
339 if (req->cnt < (req_cnt + 2)) {
340 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg));
341 if (req->ring_index < cnt)
342 req->cnt = cnt - req->ring_index;
344 req->cnt = req->length -
345 (req->ring_index - cnt);
347 if (req->cnt < (req_cnt + 2))
350 /* Build command packet */
351 req->current_outstanding_cmd = handle;
352 req->outstanding_cmds[handle] = sp;
354 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
357 cmd_pkt = (cmd_entry_t *)req->ring_ptr;
358 cmd_pkt->handle = handle;
359 /* Zero out remaining portion of packet. */
360 clr_ptr = (uint32_t *)cmd_pkt + 2;
361 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
362 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
364 /* Set target ID and LUN number*/
365 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id);
366 cmd_pkt->lun = cpu_to_le16(sp->cmd->device->lun);
368 /* Update tagged queuing modifier */
369 cmd_pkt->control_flags = __constant_cpu_to_le16(CF_SIMPLE_TAG);
371 /* Load SCSI command packet. */
372 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len);
373 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
375 /* Build IOCB segments */
376 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds);
378 /* Set total data segment count. */
379 cmd_pkt->entry_count = (uint8_t)req_cnt;
382 /* Adjust ring index. */
384 if (req->ring_index == req->length) {
386 req->ring_ptr = req->ring;
390 sp->flags |= SRB_DMA_VALID;
392 /* Set chip new ring index. */
393 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index);
394 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */
396 /* Manage unprocessed RIO/ZIO commands in response queue. */
397 if (vha->flags.process_response_queue &&
398 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
399 qla2x00_process_response_queue(rsp);
401 spin_unlock_irqrestore(&ha->hardware_lock, flags);
402 return (QLA_SUCCESS);
408 spin_unlock_irqrestore(&ha->hardware_lock, flags);
410 return (QLA_FUNCTION_FAILED);
414 * qla2x00_marker() - Send a marker IOCB to the firmware.
418 * @type: marker modifier
420 * Can be called from both normal and interrupt context.
422 * Returns non-zero if a failure occurred, else zero.
425 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
426 struct rsp_que *rsp, uint16_t loop_id,
427 uint16_t lun, uint8_t type)
430 struct mrk_entry_24xx *mrk24;
431 struct qla_hw_data *ha = vha->hw;
432 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
435 mrk = (mrk_entry_t *)qla2x00_req_pkt(vha, req, rsp);
437 DEBUG2_3(printk("%s(%ld): failed to allocate Marker IOCB.\n",
438 __func__, base_vha->host_no));
440 return (QLA_FUNCTION_FAILED);
443 mrk->entry_type = MARKER_TYPE;
444 mrk->modifier = type;
445 if (type != MK_SYNC_ALL) {
446 if (IS_FWI2_CAPABLE(ha)) {
447 mrk24 = (struct mrk_entry_24xx *) mrk;
448 mrk24->nport_handle = cpu_to_le16(loop_id);
449 mrk24->lun[1] = LSB(lun);
450 mrk24->lun[2] = MSB(lun);
451 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
452 mrk24->vp_index = vha->vp_idx;
453 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle);
455 SET_TARGET_ID(ha, mrk->target, loop_id);
456 mrk->lun = cpu_to_le16(lun);
461 qla2x00_isp_cmd(vha, req);
463 return (QLA_SUCCESS);
467 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
468 struct rsp_que *rsp, uint16_t loop_id, uint16_t lun,
472 unsigned long flags = 0;
474 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
475 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type);
476 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
482 * qla2x00_req_pkt() - Retrieve a request packet from the request ring.
485 * Note: The caller must hold the hardware lock before calling this routine.
487 * Returns NULL if function failed, else, a pointer to the request packet.
490 qla2x00_req_pkt(struct scsi_qla_host *vha, struct req_que *req,
493 struct qla_hw_data *ha = vha->hw;
494 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
495 request_t *pkt = NULL;
499 uint16_t req_cnt = 1;
501 /* Wait 1 second for slot. */
502 for (timer = HZ; timer; timer--) {
503 if ((req_cnt + 2) >= req->cnt) {
504 /* Calculate number of free request entries. */
507 RD_REG_DWORD(®->isp25mq.req_q_out);
509 if (IS_FWI2_CAPABLE(ha))
510 cnt = (uint16_t)RD_REG_DWORD(
511 ®->isp24.req_q_out);
513 cnt = qla2x00_debounce_register(
514 ISP_REQ_Q_OUT(ha, ®->isp));
516 if (req->ring_index < cnt)
517 req->cnt = cnt - req->ring_index;
519 req->cnt = req->length -
520 (req->ring_index - cnt);
522 /* If room for request in request ring. */
523 if ((req_cnt + 2) < req->cnt) {
527 /* Zero out packet. */
528 dword_ptr = (uint32_t *)pkt;
529 for (cnt = 0; cnt < REQUEST_ENTRY_SIZE / 4; cnt++)
532 /* Set entry count. */
533 pkt->entry_count = 1;
538 /* Release ring specific lock */
539 spin_unlock_irq(&ha->hardware_lock);
541 udelay(2); /* 2 us */
543 /* Check for pending interrupts. */
544 /* During init we issue marker directly */
545 if (!vha->marker_needed && !vha->flags.init_done)
547 spin_lock_irq(&ha->hardware_lock);
550 DEBUG2_3(printk("%s(): **** FAILED ****\n", __func__));
557 * qla2x00_isp_cmd() - Modify the request ring pointer.
560 * Note: The caller must hold the hardware lock before calling this routine.
563 qla2x00_isp_cmd(struct scsi_qla_host *vha, struct req_que *req)
565 struct qla_hw_data *ha = vha->hw;
566 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
567 struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp;
569 DEBUG5(printk("%s(): IOCB data:\n", __func__));
570 DEBUG5(qla2x00_dump_buffer(
571 (uint8_t *)req->ring_ptr, REQUEST_ENTRY_SIZE));
573 /* Adjust ring index. */
575 if (req->ring_index == req->length) {
577 req->ring_ptr = req->ring;
581 /* Set chip new ring index. */
583 WRT_REG_DWORD(®->isp25mq.req_q_in, req->ring_index);
584 RD_REG_DWORD(&ioreg->hccr);
587 if (IS_FWI2_CAPABLE(ha)) {
588 WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index);
589 RD_REG_DWORD_RELAXED(®->isp24.req_q_in);
591 WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp),
593 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp));
600 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and
601 * Continuation Type 1 IOCBs to allocate.
603 * @dsds: number of data segment decriptors needed
605 * Returns the number of IOCB entries needed to store @dsds.
607 static inline uint16_t
608 qla24xx_calc_iocbs(uint16_t dsds)
614 iocbs += (dsds - 1) / 5;
622 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
625 * @sp: SRB command to process
626 * @cmd_pkt: Command type 3 IOCB
627 * @tot_dsds: Total number of segments to transfer
630 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
635 scsi_qla_host_t *vha;
636 struct scsi_cmnd *cmd;
637 struct scatterlist *sg;
643 /* Update entry type to indicate Command Type 3 IOCB */
644 *((uint32_t *)(&cmd_pkt->entry_type)) =
645 __constant_cpu_to_le32(COMMAND_TYPE_7);
647 /* No data transfer */
648 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
649 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
653 vha = sp->fcport->vha;
656 /* Set transfer direction */
657 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
658 cmd_pkt->task_mgmt_flags =
659 __constant_cpu_to_le16(TMF_WRITE_DATA);
660 sp->fcport->vha->hw->qla_stats.output_bytes +=
661 scsi_bufflen(sp->cmd);
662 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
663 cmd_pkt->task_mgmt_flags =
664 __constant_cpu_to_le16(TMF_READ_DATA);
665 sp->fcport->vha->hw->qla_stats.input_bytes +=
666 scsi_bufflen(sp->cmd);
669 /* One DSD is available in the Command Type 3 IOCB */
671 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
673 /* Load data segments */
675 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
677 cont_a64_entry_t *cont_pkt;
679 /* Allocate additional continuation packets? */
680 if (avail_dsds == 0) {
682 * Five DSDs are available in the Continuation
685 cont_pkt = qla2x00_prep_cont_type1_iocb(vha);
686 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
690 sle_dma = sg_dma_address(sg);
691 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
692 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
693 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
700 * qla24xx_start_scsi() - Send a SCSI command to the ISP
701 * @sp: command to send to the ISP
703 * Returns non-zero if a failure occurred, else zero.
706 qla24xx_start_scsi(srb_t *sp)
713 struct cmd_type_7 *cmd_pkt;
717 struct req_que *req = NULL;
718 struct rsp_que *rsp = NULL;
719 struct scsi_cmnd *cmd = sp->cmd;
720 struct scsi_qla_host *vha = sp->fcport->vha;
721 struct qla_hw_data *ha = vha->hw;
723 /* Setup device pointers. */
726 qla25xx_set_que(sp, &rsp);
729 /* So we know we haven't pci_map'ed anything yet */
732 /* Send marker if required */
733 if (vha->marker_needed != 0) {
734 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL)
736 return QLA_FUNCTION_FAILED;
737 vha->marker_needed = 0;
740 /* Acquire ring specific lock */
741 spin_lock_irqsave(&ha->hardware_lock, flags);
743 /* Check for room in outstanding command list. */
744 handle = req->current_outstanding_cmd;
745 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
747 if (handle == MAX_OUTSTANDING_COMMANDS)
749 if (!req->outstanding_cmds[handle])
752 if (index == MAX_OUTSTANDING_COMMANDS)
755 /* Map the sg table so we have an accurate count of sg entries needed */
756 if (scsi_sg_count(cmd)) {
757 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
758 scsi_sg_count(cmd), cmd->sc_data_direction);
766 req_cnt = qla24xx_calc_iocbs(tot_dsds);
767 if (req->cnt < (req_cnt + 2)) {
768 cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
770 if (req->ring_index < cnt)
771 req->cnt = cnt - req->ring_index;
773 req->cnt = req->length -
774 (req->ring_index - cnt);
776 if (req->cnt < (req_cnt + 2))
779 /* Build command packet. */
780 req->current_outstanding_cmd = handle;
781 req->outstanding_cmds[handle] = sp;
783 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
786 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
787 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
789 /* Zero out remaining portion of packet. */
790 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
791 clr_ptr = (uint32_t *)cmd_pkt + 2;
792 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
793 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
795 /* Set NPORT-ID and LUN number*/
796 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
797 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
798 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
799 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
800 cmd_pkt->vp_index = sp->fcport->vp_idx;
802 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun);
803 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
805 /* Load SCSI command packet. */
806 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
807 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
809 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
811 /* Build IOCB segments */
812 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
814 /* Set total data segment count. */
815 cmd_pkt->entry_count = (uint8_t)req_cnt;
816 /* Specify response queue number where completion should happen */
817 cmd_pkt->entry_status = (uint8_t) rsp->id;
820 /* Adjust ring index. */
822 if (req->ring_index == req->length) {
824 req->ring_ptr = req->ring;
828 sp->flags |= SRB_DMA_VALID;
830 /* Set chip new ring index. */
831 WRT_REG_DWORD(req->req_q_in, req->ring_index);
832 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
834 /* Manage unprocessed RIO/ZIO commands in response queue. */
835 if (vha->flags.process_response_queue &&
836 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
837 qla24xx_process_response_queue(vha, rsp);
839 spin_unlock_irqrestore(&ha->hardware_lock, flags);
846 spin_unlock_irqrestore(&ha->hardware_lock, flags);
848 return QLA_FUNCTION_FAILED;
851 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp)
853 struct scsi_cmnd *cmd = sp->cmd;
854 struct qla_hw_data *ha = sp->fcport->vha->hw;
855 int affinity = cmd->request->cpu;
857 if (ha->flags.cpu_affinity_enabled && affinity >= 0 &&
858 affinity < ha->max_rsp_queues - 1)
859 *rsp = ha->rsp_q_map[affinity + 1];
861 *rsp = ha->rsp_q_map[0];
864 /* Generic Control-SRB manipulation functions. */
867 qla2x00_alloc_iocbs(srb_t *sp)
869 scsi_qla_host_t *vha = sp->fcport->vha;
870 struct qla_hw_data *ha = vha->hw;
871 struct req_que *req = ha->req_q_map[0];
872 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
873 uint32_t index, handle;
875 uint16_t cnt, req_cnt;
880 /* Check for room in outstanding command list. */
881 handle = req->current_outstanding_cmd;
882 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
884 if (handle == MAX_OUTSTANDING_COMMANDS)
886 if (!req->outstanding_cmds[handle])
889 if (index == MAX_OUTSTANDING_COMMANDS)
892 /* Check for room on request queue. */
893 if (req->cnt < req_cnt) {
895 cnt = RD_REG_DWORD(®->isp25mq.req_q_out);
896 else if (IS_FWI2_CAPABLE(ha))
897 cnt = RD_REG_DWORD(®->isp24.req_q_out);
899 cnt = qla2x00_debounce_register(
900 ISP_REQ_Q_OUT(ha, ®->isp));
902 if (req->ring_index < cnt)
903 req->cnt = cnt - req->ring_index;
905 req->cnt = req->length -
906 (req->ring_index - cnt);
908 if (req->cnt < req_cnt)
912 req->current_outstanding_cmd = handle;
913 req->outstanding_cmds[handle] = sp;
917 memset(pkt, 0, REQUEST_ENTRY_SIZE);
918 pkt->entry_count = req_cnt;
919 pkt->handle = handle;
927 qla2x00_start_iocbs(srb_t *sp)
929 struct qla_hw_data *ha = sp->fcport->vha->hw;
930 struct req_que *req = ha->req_q_map[0];
931 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
932 struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp;
934 /* Adjust ring index. */
936 if (req->ring_index == req->length) {
938 req->ring_ptr = req->ring;
942 /* Set chip new ring index. */
944 WRT_REG_DWORD(®->isp25mq.req_q_in, req->ring_index);
945 RD_REG_DWORD(&ioreg->hccr);
946 } else if (IS_FWI2_CAPABLE(ha)) {
947 WRT_REG_DWORD(®->isp24.req_q_in, req->ring_index);
948 RD_REG_DWORD_RELAXED(®->isp24.req_q_in);
950 WRT_REG_WORD(ISP_REQ_Q_IN(ha, ®->isp), req->ring_index);
951 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, ®->isp));
956 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
958 struct srb_logio *lio = sp->ctx;
960 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
961 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
962 if (lio->flags & SRB_LOGIN_COND_PLOGI)
963 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
964 if (lio->flags & SRB_LOGIN_SKIP_PRLI)
965 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
966 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
967 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
968 logio->port_id[1] = sp->fcport->d_id.b.area;
969 logio->port_id[2] = sp->fcport->d_id.b.domain;
970 logio->vp_index = sp->fcport->vp_idx;
974 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
976 struct qla_hw_data *ha = sp->fcport->vha->hw;
977 struct srb_logio *lio = sp->ctx;
980 mbx->entry_type = MBX_IOCB_TYPE;;
981 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
982 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
983 opts = lio->flags & SRB_LOGIN_COND_PLOGI ? BIT_0: 0;
984 opts |= lio->flags & SRB_LOGIN_SKIP_PRLI ? BIT_1: 0;
985 if (HAS_EXTENDED_IDS(ha)) {
986 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
987 mbx->mb10 = cpu_to_le16(opts);
989 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts);
991 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
992 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
993 sp->fcport->d_id.b.al_pa);
994 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx);
998 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1000 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1001 logio->control_flags =
1002 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
1003 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1004 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1005 logio->port_id[1] = sp->fcport->d_id.b.area;
1006 logio->port_id[2] = sp->fcport->d_id.b.domain;
1007 logio->vp_index = sp->fcport->vp_idx;
1011 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx)
1013 struct qla_hw_data *ha = sp->fcport->vha->hw;
1015 mbx->entry_type = MBX_IOCB_TYPE;;
1016 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1017 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
1018 mbx->mb1 = HAS_EXTENDED_IDS(ha) ?
1019 cpu_to_le16(sp->fcport->loop_id):
1020 cpu_to_le16(sp->fcport->loop_id << 8);
1021 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1022 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1023 sp->fcport->d_id.b.al_pa);
1024 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx);
1025 /* Implicit: mbx->mbx10 = 0. */
1029 qla2x00_start_sp(srb_t *sp)
1032 struct qla_hw_data *ha = sp->fcport->vha->hw;
1034 struct srb_ctx *ctx = sp->ctx;
1035 unsigned long flags;
1037 rval = QLA_FUNCTION_FAILED;
1038 spin_lock_irqsave(&ha->hardware_lock, flags);
1039 pkt = qla2x00_alloc_iocbs(sp);
1044 switch (ctx->type) {
1046 IS_FWI2_CAPABLE(ha) ?
1047 qla24xx_login_iocb(sp, pkt):
1048 qla2x00_login_iocb(sp, pkt);
1050 case SRB_LOGOUT_CMD:
1051 IS_FWI2_CAPABLE(ha) ?
1052 qla24xx_logout_iocb(sp, pkt):
1053 qla2x00_logout_iocb(sp, pkt);
1060 qla2x00_start_iocbs(sp);
1062 spin_unlock_irqrestore(&ha->hardware_lock, flags);