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Merge git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile
[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / qla2xxx / qla_iocb.c
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2014 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8 #include "qla_target.h"
9
10 #include <linux/blkdev.h>
11 #include <linux/delay.h>
12
13 #include <scsi/scsi_tcq.h>
14
15 static void qla25xx_set_que(srb_t *, struct rsp_que **);
16 /**
17 * qla2x00_get_cmd_direction() - Determine control_flag data direction.
18 * @cmd: SCSI command
19 *
20 * Returns the proper CF_* direction based on CDB.
21 */
22 static inline uint16_t
23 qla2x00_get_cmd_direction(srb_t *sp)
24 {
25 uint16_t cflags;
26 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
27 struct scsi_qla_host *vha = sp->fcport->vha;
28
29 cflags = 0;
30
31 /* Set transfer direction */
32 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
33 cflags = CF_WRITE;
34 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
35 vha->qla_stats.output_requests++;
36 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
37 cflags = CF_READ;
38 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
39 vha->qla_stats.input_requests++;
40 }
41 return (cflags);
42 }
43
44 /**
45 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and
46 * Continuation Type 0 IOCBs to allocate.
47 *
48 * @dsds: number of data segment decriptors needed
49 *
50 * Returns the number of IOCB entries needed to store @dsds.
51 */
52 uint16_t
53 qla2x00_calc_iocbs_32(uint16_t dsds)
54 {
55 uint16_t iocbs;
56
57 iocbs = 1;
58 if (dsds > 3) {
59 iocbs += (dsds - 3) / 7;
60 if ((dsds - 3) % 7)
61 iocbs++;
62 }
63 return (iocbs);
64 }
65
66 /**
67 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and
68 * Continuation Type 1 IOCBs to allocate.
69 *
70 * @dsds: number of data segment decriptors needed
71 *
72 * Returns the number of IOCB entries needed to store @dsds.
73 */
74 uint16_t
75 qla2x00_calc_iocbs_64(uint16_t dsds)
76 {
77 uint16_t iocbs;
78
79 iocbs = 1;
80 if (dsds > 2) {
81 iocbs += (dsds - 2) / 5;
82 if ((dsds - 2) % 5)
83 iocbs++;
84 }
85 return (iocbs);
86 }
87
88 /**
89 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB.
90 * @ha: HA context
91 *
92 * Returns a pointer to the Continuation Type 0 IOCB packet.
93 */
94 static inline cont_entry_t *
95 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha)
96 {
97 cont_entry_t *cont_pkt;
98 struct req_que *req = vha->req;
99 /* Adjust ring index. */
100 req->ring_index++;
101 if (req->ring_index == req->length) {
102 req->ring_index = 0;
103 req->ring_ptr = req->ring;
104 } else {
105 req->ring_ptr++;
106 }
107
108 cont_pkt = (cont_entry_t *)req->ring_ptr;
109
110 /* Load packet defaults. */
111 *((uint32_t *)(&cont_pkt->entry_type)) = cpu_to_le32(CONTINUE_TYPE);
112
113 return (cont_pkt);
114 }
115
116 /**
117 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB.
118 * @ha: HA context
119 *
120 * Returns a pointer to the continuation type 1 IOCB packet.
121 */
122 static inline cont_a64_entry_t *
123 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req)
124 {
125 cont_a64_entry_t *cont_pkt;
126
127 /* Adjust ring index. */
128 req->ring_index++;
129 if (req->ring_index == req->length) {
130 req->ring_index = 0;
131 req->ring_ptr = req->ring;
132 } else {
133 req->ring_ptr++;
134 }
135
136 cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
137
138 /* Load packet defaults. */
139 *((uint32_t *)(&cont_pkt->entry_type)) = IS_QLAFX00(vha->hw) ?
140 cpu_to_le32(CONTINUE_A64_TYPE_FX00) :
141 cpu_to_le32(CONTINUE_A64_TYPE);
142
143 return (cont_pkt);
144 }
145
146 static inline int
147 qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts)
148 {
149 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
150 uint8_t guard = scsi_host_get_guard(cmd->device->host);
151
152 /* We always use DIFF Bundling for best performance */
153 *fw_prot_opts = 0;
154
155 /* Translate SCSI opcode to a protection opcode */
156 switch (scsi_get_prot_op(cmd)) {
157 case SCSI_PROT_READ_STRIP:
158 *fw_prot_opts |= PO_MODE_DIF_REMOVE;
159 break;
160 case SCSI_PROT_WRITE_INSERT:
161 *fw_prot_opts |= PO_MODE_DIF_INSERT;
162 break;
163 case SCSI_PROT_READ_INSERT:
164 *fw_prot_opts |= PO_MODE_DIF_INSERT;
165 break;
166 case SCSI_PROT_WRITE_STRIP:
167 *fw_prot_opts |= PO_MODE_DIF_REMOVE;
168 break;
169 case SCSI_PROT_READ_PASS:
170 case SCSI_PROT_WRITE_PASS:
171 if (guard & SHOST_DIX_GUARD_IP)
172 *fw_prot_opts |= PO_MODE_DIF_TCP_CKSUM;
173 else
174 *fw_prot_opts |= PO_MODE_DIF_PASS;
175 break;
176 default: /* Normal Request */
177 *fw_prot_opts |= PO_MODE_DIF_PASS;
178 break;
179 }
180
181 return scsi_prot_sg_count(cmd);
182 }
183
184 /*
185 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit
186 * capable IOCB types.
187 *
188 * @sp: SRB command to process
189 * @cmd_pkt: Command type 2 IOCB
190 * @tot_dsds: Total number of segments to transfer
191 */
192 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt,
193 uint16_t tot_dsds)
194 {
195 uint16_t avail_dsds;
196 uint32_t *cur_dsd;
197 scsi_qla_host_t *vha;
198 struct scsi_cmnd *cmd;
199 struct scatterlist *sg;
200 int i;
201
202 cmd = GET_CMD_SP(sp);
203
204 /* Update entry type to indicate Command Type 2 IOCB */
205 *((uint32_t *)(&cmd_pkt->entry_type)) =
206 cpu_to_le32(COMMAND_TYPE);
207
208 /* No data transfer */
209 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
210 cmd_pkt->byte_count = cpu_to_le32(0);
211 return;
212 }
213
214 vha = sp->fcport->vha;
215 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
216
217 /* Three DSDs are available in the Command Type 2 IOCB */
218 avail_dsds = 3;
219 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
220
221 /* Load data segments */
222 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
223 cont_entry_t *cont_pkt;
224
225 /* Allocate additional continuation packets? */
226 if (avail_dsds == 0) {
227 /*
228 * Seven DSDs are available in the Continuation
229 * Type 0 IOCB.
230 */
231 cont_pkt = qla2x00_prep_cont_type0_iocb(vha);
232 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address;
233 avail_dsds = 7;
234 }
235
236 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg));
237 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
238 avail_dsds--;
239 }
240 }
241
242 /**
243 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit
244 * capable IOCB types.
245 *
246 * @sp: SRB command to process
247 * @cmd_pkt: Command type 3 IOCB
248 * @tot_dsds: Total number of segments to transfer
249 */
250 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt,
251 uint16_t tot_dsds)
252 {
253 uint16_t avail_dsds;
254 uint32_t *cur_dsd;
255 scsi_qla_host_t *vha;
256 struct scsi_cmnd *cmd;
257 struct scatterlist *sg;
258 int i;
259
260 cmd = GET_CMD_SP(sp);
261
262 /* Update entry type to indicate Command Type 3 IOCB */
263 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_A64_TYPE);
264
265 /* No data transfer */
266 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
267 cmd_pkt->byte_count = cpu_to_le32(0);
268 return;
269 }
270
271 vha = sp->fcport->vha;
272 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
273
274 /* Two DSDs are available in the Command Type 3 IOCB */
275 avail_dsds = 2;
276 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
277
278 /* Load data segments */
279 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
280 dma_addr_t sle_dma;
281 cont_a64_entry_t *cont_pkt;
282
283 /* Allocate additional continuation packets? */
284 if (avail_dsds == 0) {
285 /*
286 * Five DSDs are available in the Continuation
287 * Type 1 IOCB.
288 */
289 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
290 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
291 avail_dsds = 5;
292 }
293
294 sle_dma = sg_dma_address(sg);
295 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
296 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
297 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
298 avail_dsds--;
299 }
300 }
301
302 /**
303 * qla2x00_start_scsi() - Send a SCSI command to the ISP
304 * @sp: command to send to the ISP
305 *
306 * Returns non-zero if a failure occurred, else zero.
307 */
308 int
309 qla2x00_start_scsi(srb_t *sp)
310 {
311 int nseg;
312 unsigned long flags;
313 scsi_qla_host_t *vha;
314 struct scsi_cmnd *cmd;
315 uint32_t *clr_ptr;
316 uint32_t index;
317 uint32_t handle;
318 cmd_entry_t *cmd_pkt;
319 uint16_t cnt;
320 uint16_t req_cnt;
321 uint16_t tot_dsds;
322 struct device_reg_2xxx __iomem *reg;
323 struct qla_hw_data *ha;
324 struct req_que *req;
325 struct rsp_que *rsp;
326
327 /* Setup device pointers. */
328 vha = sp->fcport->vha;
329 ha = vha->hw;
330 reg = &ha->iobase->isp;
331 cmd = GET_CMD_SP(sp);
332 req = ha->req_q_map[0];
333 rsp = ha->rsp_q_map[0];
334 /* So we know we haven't pci_map'ed anything yet */
335 tot_dsds = 0;
336
337 /* Send marker if required */
338 if (vha->marker_needed != 0) {
339 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
340 QLA_SUCCESS) {
341 return (QLA_FUNCTION_FAILED);
342 }
343 vha->marker_needed = 0;
344 }
345
346 /* Acquire ring specific lock */
347 spin_lock_irqsave(&ha->hardware_lock, flags);
348
349 /* Check for room in outstanding command list. */
350 handle = req->current_outstanding_cmd;
351 for (index = 1; index < req->num_outstanding_cmds; index++) {
352 handle++;
353 if (handle == req->num_outstanding_cmds)
354 handle = 1;
355 if (!req->outstanding_cmds[handle])
356 break;
357 }
358 if (index == req->num_outstanding_cmds)
359 goto queuing_error;
360
361 /* Map the sg table so we have an accurate count of sg entries needed */
362 if (scsi_sg_count(cmd)) {
363 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
364 scsi_sg_count(cmd), cmd->sc_data_direction);
365 if (unlikely(!nseg))
366 goto queuing_error;
367 } else
368 nseg = 0;
369
370 tot_dsds = nseg;
371
372 /* Calculate the number of request entries needed. */
373 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds);
374 if (req->cnt < (req_cnt + 2)) {
375 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg));
376 if (req->ring_index < cnt)
377 req->cnt = cnt - req->ring_index;
378 else
379 req->cnt = req->length -
380 (req->ring_index - cnt);
381 /* If still no head room then bail out */
382 if (req->cnt < (req_cnt + 2))
383 goto queuing_error;
384 }
385
386 /* Build command packet */
387 req->current_outstanding_cmd = handle;
388 req->outstanding_cmds[handle] = sp;
389 sp->handle = handle;
390 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
391 req->cnt -= req_cnt;
392
393 cmd_pkt = (cmd_entry_t *)req->ring_ptr;
394 cmd_pkt->handle = handle;
395 /* Zero out remaining portion of packet. */
396 clr_ptr = (uint32_t *)cmd_pkt + 2;
397 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
398 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
399
400 /* Set target ID and LUN number*/
401 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id);
402 cmd_pkt->lun = cpu_to_le16(cmd->device->lun);
403 cmd_pkt->control_flags = cpu_to_le16(CF_SIMPLE_TAG);
404
405 /* Load SCSI command packet. */
406 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len);
407 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
408
409 /* Build IOCB segments */
410 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds);
411
412 /* Set total data segment count. */
413 cmd_pkt->entry_count = (uint8_t)req_cnt;
414 wmb();
415
416 /* Adjust ring index. */
417 req->ring_index++;
418 if (req->ring_index == req->length) {
419 req->ring_index = 0;
420 req->ring_ptr = req->ring;
421 } else
422 req->ring_ptr++;
423
424 sp->flags |= SRB_DMA_VALID;
425
426 /* Set chip new ring index. */
427 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index);
428 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */
429
430 /* Manage unprocessed RIO/ZIO commands in response queue. */
431 if (vha->flags.process_response_queue &&
432 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
433 qla2x00_process_response_queue(rsp);
434
435 spin_unlock_irqrestore(&ha->hardware_lock, flags);
436 return (QLA_SUCCESS);
437
438 queuing_error:
439 if (tot_dsds)
440 scsi_dma_unmap(cmd);
441
442 spin_unlock_irqrestore(&ha->hardware_lock, flags);
443
444 return (QLA_FUNCTION_FAILED);
445 }
446
447 /**
448 * qla2x00_start_iocbs() - Execute the IOCB command
449 */
450 void
451 qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req)
452 {
453 struct qla_hw_data *ha = vha->hw;
454 device_reg_t *reg = ISP_QUE_REG(ha, req->id);
455
456 if (IS_P3P_TYPE(ha)) {
457 qla82xx_start_iocbs(vha);
458 } else {
459 /* Adjust ring index. */
460 req->ring_index++;
461 if (req->ring_index == req->length) {
462 req->ring_index = 0;
463 req->ring_ptr = req->ring;
464 } else
465 req->ring_ptr++;
466
467 /* Set chip new ring index. */
468 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
469 WRT_REG_DWORD(req->req_q_in, req->ring_index);
470 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
471 } else if (IS_QLAFX00(ha)) {
472 WRT_REG_DWORD(&reg->ispfx00.req_q_in, req->ring_index);
473 RD_REG_DWORD_RELAXED(&reg->ispfx00.req_q_in);
474 QLAFX00_SET_HST_INTR(ha, ha->rqstq_intr_code);
475 } else if (IS_FWI2_CAPABLE(ha)) {
476 WRT_REG_DWORD(&reg->isp24.req_q_in, req->ring_index);
477 RD_REG_DWORD_RELAXED(&reg->isp24.req_q_in);
478 } else {
479 WRT_REG_WORD(ISP_REQ_Q_IN(ha, &reg->isp),
480 req->ring_index);
481 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, &reg->isp));
482 }
483 }
484 }
485
486 /**
487 * qla2x00_marker() - Send a marker IOCB to the firmware.
488 * @ha: HA context
489 * @loop_id: loop ID
490 * @lun: LUN
491 * @type: marker modifier
492 *
493 * Can be called from both normal and interrupt context.
494 *
495 * Returns non-zero if a failure occurred, else zero.
496 */
497 static int
498 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
499 struct rsp_que *rsp, uint16_t loop_id,
500 uint64_t lun, uint8_t type)
501 {
502 mrk_entry_t *mrk;
503 struct mrk_entry_24xx *mrk24 = NULL;
504
505 struct qla_hw_data *ha = vha->hw;
506 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
507
508 req = ha->req_q_map[0];
509 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, NULL);
510 if (mrk == NULL) {
511 ql_log(ql_log_warn, base_vha, 0x3026,
512 "Failed to allocate Marker IOCB.\n");
513
514 return (QLA_FUNCTION_FAILED);
515 }
516
517 mrk->entry_type = MARKER_TYPE;
518 mrk->modifier = type;
519 if (type != MK_SYNC_ALL) {
520 if (IS_FWI2_CAPABLE(ha)) {
521 mrk24 = (struct mrk_entry_24xx *) mrk;
522 mrk24->nport_handle = cpu_to_le16(loop_id);
523 int_to_scsilun(lun, (struct scsi_lun *)&mrk24->lun);
524 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
525 mrk24->vp_index = vha->vp_idx;
526 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle);
527 } else {
528 SET_TARGET_ID(ha, mrk->target, loop_id);
529 mrk->lun = cpu_to_le16((uint16_t)lun);
530 }
531 }
532 wmb();
533
534 qla2x00_start_iocbs(vha, req);
535
536 return (QLA_SUCCESS);
537 }
538
539 int
540 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
541 struct rsp_que *rsp, uint16_t loop_id, uint64_t lun,
542 uint8_t type)
543 {
544 int ret;
545 unsigned long flags = 0;
546
547 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
548 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type);
549 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
550
551 return (ret);
552 }
553
554 /*
555 * qla2x00_issue_marker
556 *
557 * Issue marker
558 * Caller CAN have hardware lock held as specified by ha_locked parameter.
559 * Might release it, then reaquire.
560 */
561 int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
562 {
563 if (ha_locked) {
564 if (__qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0,
565 MK_SYNC_ALL) != QLA_SUCCESS)
566 return QLA_FUNCTION_FAILED;
567 } else {
568 if (qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0,
569 MK_SYNC_ALL) != QLA_SUCCESS)
570 return QLA_FUNCTION_FAILED;
571 }
572 vha->marker_needed = 0;
573
574 return QLA_SUCCESS;
575 }
576
577 static inline int
578 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
579 uint16_t tot_dsds)
580 {
581 uint32_t *cur_dsd = NULL;
582 scsi_qla_host_t *vha;
583 struct qla_hw_data *ha;
584 struct scsi_cmnd *cmd;
585 struct scatterlist *cur_seg;
586 uint32_t *dsd_seg;
587 void *next_dsd;
588 uint8_t avail_dsds;
589 uint8_t first_iocb = 1;
590 uint32_t dsd_list_len;
591 struct dsd_dma *dsd_ptr;
592 struct ct6_dsd *ctx;
593
594 cmd = GET_CMD_SP(sp);
595
596 /* Update entry type to indicate Command Type 3 IOCB */
597 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_6);
598
599 /* No data transfer */
600 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
601 cmd_pkt->byte_count = cpu_to_le32(0);
602 return 0;
603 }
604
605 vha = sp->fcport->vha;
606 ha = vha->hw;
607
608 /* Set transfer direction */
609 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
610 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
611 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
612 vha->qla_stats.output_requests++;
613 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
614 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
615 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
616 vha->qla_stats.input_requests++;
617 }
618
619 cur_seg = scsi_sglist(cmd);
620 ctx = GET_CMD_CTX_SP(sp);
621
622 while (tot_dsds) {
623 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ?
624 QLA_DSDS_PER_IOCB : tot_dsds;
625 tot_dsds -= avail_dsds;
626 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE;
627
628 dsd_ptr = list_first_entry(&ha->gbl_dsd_list,
629 struct dsd_dma, list);
630 next_dsd = dsd_ptr->dsd_addr;
631 list_del(&dsd_ptr->list);
632 ha->gbl_dsd_avail--;
633 list_add_tail(&dsd_ptr->list, &ctx->dsd_list);
634 ctx->dsd_use_cnt++;
635 ha->gbl_dsd_inuse++;
636
637 if (first_iocb) {
638 first_iocb = 0;
639 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
640 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
641 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
642 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len);
643 } else {
644 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
645 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
646 *cur_dsd++ = cpu_to_le32(dsd_list_len);
647 }
648 cur_dsd = (uint32_t *)next_dsd;
649 while (avail_dsds) {
650 dma_addr_t sle_dma;
651
652 sle_dma = sg_dma_address(cur_seg);
653 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
654 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
655 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg));
656 cur_seg = sg_next(cur_seg);
657 avail_dsds--;
658 }
659 }
660
661 /* Null termination */
662 *cur_dsd++ = 0;
663 *cur_dsd++ = 0;
664 *cur_dsd++ = 0;
665 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE;
666 return 0;
667 }
668
669 /*
670 * qla24xx_calc_dsd_lists() - Determine number of DSD list required
671 * for Command Type 6.
672 *
673 * @dsds: number of data segment decriptors needed
674 *
675 * Returns the number of dsd list needed to store @dsds.
676 */
677 static inline uint16_t
678 qla24xx_calc_dsd_lists(uint16_t dsds)
679 {
680 uint16_t dsd_lists = 0;
681
682 dsd_lists = (dsds/QLA_DSDS_PER_IOCB);
683 if (dsds % QLA_DSDS_PER_IOCB)
684 dsd_lists++;
685 return dsd_lists;
686 }
687
688
689 /**
690 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
691 * IOCB types.
692 *
693 * @sp: SRB command to process
694 * @cmd_pkt: Command type 3 IOCB
695 * @tot_dsds: Total number of segments to transfer
696 */
697 static inline void
698 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
699 uint16_t tot_dsds)
700 {
701 uint16_t avail_dsds;
702 uint32_t *cur_dsd;
703 scsi_qla_host_t *vha;
704 struct scsi_cmnd *cmd;
705 struct scatterlist *sg;
706 int i;
707
708 cmd = GET_CMD_SP(sp);
709
710 /* Update entry type to indicate Command Type 3 IOCB */
711 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_7);
712
713 /* No data transfer */
714 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
715 cmd_pkt->byte_count = cpu_to_le32(0);
716 return;
717 }
718
719 vha = sp->fcport->vha;
720
721 /* Set transfer direction */
722 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
723 cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_WRITE_DATA);
724 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
725 vha->qla_stats.output_requests++;
726 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
727 cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_READ_DATA);
728 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
729 vha->qla_stats.input_requests++;
730 }
731
732 /* One DSD is available in the Command Type 3 IOCB */
733 avail_dsds = 1;
734 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
735
736 /* Load data segments */
737
738 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
739 dma_addr_t sle_dma;
740 cont_a64_entry_t *cont_pkt;
741
742 /* Allocate additional continuation packets? */
743 if (avail_dsds == 0) {
744 /*
745 * Five DSDs are available in the Continuation
746 * Type 1 IOCB.
747 */
748 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
749 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
750 avail_dsds = 5;
751 }
752
753 sle_dma = sg_dma_address(sg);
754 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
755 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
756 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
757 avail_dsds--;
758 }
759 }
760
761 struct fw_dif_context {
762 uint32_t ref_tag;
763 uint16_t app_tag;
764 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/
765 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/
766 };
767
768 /*
769 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
770 *
771 */
772 static inline void
773 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt,
774 unsigned int protcnt)
775 {
776 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
777
778 switch (scsi_get_prot_type(cmd)) {
779 case SCSI_PROT_DIF_TYPE0:
780 /*
781 * No check for ql2xenablehba_err_chk, as it would be an
782 * I/O error if hba tag generation is not done.
783 */
784 pkt->ref_tag = cpu_to_le32((uint32_t)
785 (0xffffffff & scsi_get_lba(cmd)));
786
787 if (!qla2x00_hba_err_chk_enabled(sp))
788 break;
789
790 pkt->ref_tag_mask[0] = 0xff;
791 pkt->ref_tag_mask[1] = 0xff;
792 pkt->ref_tag_mask[2] = 0xff;
793 pkt->ref_tag_mask[3] = 0xff;
794 break;
795
796 /*
797 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
798 * match LBA in CDB + N
799 */
800 case SCSI_PROT_DIF_TYPE2:
801 pkt->app_tag = cpu_to_le16(0);
802 pkt->app_tag_mask[0] = 0x0;
803 pkt->app_tag_mask[1] = 0x0;
804
805 pkt->ref_tag = cpu_to_le32((uint32_t)
806 (0xffffffff & scsi_get_lba(cmd)));
807
808 if (!qla2x00_hba_err_chk_enabled(sp))
809 break;
810
811 /* enable ALL bytes of the ref tag */
812 pkt->ref_tag_mask[0] = 0xff;
813 pkt->ref_tag_mask[1] = 0xff;
814 pkt->ref_tag_mask[2] = 0xff;
815 pkt->ref_tag_mask[3] = 0xff;
816 break;
817
818 /* For Type 3 protection: 16 bit GUARD only */
819 case SCSI_PROT_DIF_TYPE3:
820 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] =
821 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] =
822 0x00;
823 break;
824
825 /*
826 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
827 * 16 bit app tag.
828 */
829 case SCSI_PROT_DIF_TYPE1:
830 pkt->ref_tag = cpu_to_le32((uint32_t)
831 (0xffffffff & scsi_get_lba(cmd)));
832 pkt->app_tag = cpu_to_le16(0);
833 pkt->app_tag_mask[0] = 0x0;
834 pkt->app_tag_mask[1] = 0x0;
835
836 if (!qla2x00_hba_err_chk_enabled(sp))
837 break;
838
839 /* enable ALL bytes of the ref tag */
840 pkt->ref_tag_mask[0] = 0xff;
841 pkt->ref_tag_mask[1] = 0xff;
842 pkt->ref_tag_mask[2] = 0xff;
843 pkt->ref_tag_mask[3] = 0xff;
844 break;
845 }
846 }
847
848 struct qla2_sgx {
849 dma_addr_t dma_addr; /* OUT */
850 uint32_t dma_len; /* OUT */
851
852 uint32_t tot_bytes; /* IN */
853 struct scatterlist *cur_sg; /* IN */
854
855 /* for book keeping, bzero on initial invocation */
856 uint32_t bytes_consumed;
857 uint32_t num_bytes;
858 uint32_t tot_partial;
859
860 /* for debugging */
861 uint32_t num_sg;
862 srb_t *sp;
863 };
864
865 static int
866 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx,
867 uint32_t *partial)
868 {
869 struct scatterlist *sg;
870 uint32_t cumulative_partial, sg_len;
871 dma_addr_t sg_dma_addr;
872
873 if (sgx->num_bytes == sgx->tot_bytes)
874 return 0;
875
876 sg = sgx->cur_sg;
877 cumulative_partial = sgx->tot_partial;
878
879 sg_dma_addr = sg_dma_address(sg);
880 sg_len = sg_dma_len(sg);
881
882 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed;
883
884 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) {
885 sgx->dma_len = (blk_sz - cumulative_partial);
886 sgx->tot_partial = 0;
887 sgx->num_bytes += blk_sz;
888 *partial = 0;
889 } else {
890 sgx->dma_len = sg_len - sgx->bytes_consumed;
891 sgx->tot_partial += sgx->dma_len;
892 *partial = 1;
893 }
894
895 sgx->bytes_consumed += sgx->dma_len;
896
897 if (sg_len == sgx->bytes_consumed) {
898 sg = sg_next(sg);
899 sgx->num_sg++;
900 sgx->cur_sg = sg;
901 sgx->bytes_consumed = 0;
902 }
903
904 return 1;
905 }
906
907 int
908 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp,
909 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
910 {
911 void *next_dsd;
912 uint8_t avail_dsds = 0;
913 uint32_t dsd_list_len;
914 struct dsd_dma *dsd_ptr;
915 struct scatterlist *sg_prot;
916 uint32_t *cur_dsd = dsd;
917 uint16_t used_dsds = tot_dsds;
918
919 uint32_t prot_int; /* protection interval */
920 uint32_t partial;
921 struct qla2_sgx sgx;
922 dma_addr_t sle_dma;
923 uint32_t sle_dma_len, tot_prot_dma_len = 0;
924 struct scsi_cmnd *cmd;
925
926 memset(&sgx, 0, sizeof(struct qla2_sgx));
927 if (sp) {
928 cmd = GET_CMD_SP(sp);
929 prot_int = cmd->device->sector_size;
930
931 sgx.tot_bytes = scsi_bufflen(cmd);
932 sgx.cur_sg = scsi_sglist(cmd);
933 sgx.sp = sp;
934
935 sg_prot = scsi_prot_sglist(cmd);
936 } else if (tc) {
937 prot_int = tc->blk_sz;
938 sgx.tot_bytes = tc->bufflen;
939 sgx.cur_sg = tc->sg;
940 sg_prot = tc->prot_sg;
941 } else {
942 BUG();
943 return 1;
944 }
945
946 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) {
947
948 sle_dma = sgx.dma_addr;
949 sle_dma_len = sgx.dma_len;
950 alloc_and_fill:
951 /* Allocate additional continuation packets? */
952 if (avail_dsds == 0) {
953 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
954 QLA_DSDS_PER_IOCB : used_dsds;
955 dsd_list_len = (avail_dsds + 1) * 12;
956 used_dsds -= avail_dsds;
957
958 /* allocate tracking DS */
959 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
960 if (!dsd_ptr)
961 return 1;
962
963 /* allocate new list */
964 dsd_ptr->dsd_addr = next_dsd =
965 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
966 &dsd_ptr->dsd_list_dma);
967
968 if (!next_dsd) {
969 /*
970 * Need to cleanup only this dsd_ptr, rest
971 * will be done by sp_free_dma()
972 */
973 kfree(dsd_ptr);
974 return 1;
975 }
976
977 if (sp) {
978 list_add_tail(&dsd_ptr->list,
979 &((struct crc_context *)
980 sp->u.scmd.ctx)->dsd_list);
981
982 sp->flags |= SRB_CRC_CTX_DSD_VALID;
983 } else {
984 list_add_tail(&dsd_ptr->list,
985 &(tc->ctx->dsd_list));
986 tc->ctx_dsd_alloced = 1;
987 }
988
989
990 /* add new list to cmd iocb or last list */
991 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
992 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
993 *cur_dsd++ = dsd_list_len;
994 cur_dsd = (uint32_t *)next_dsd;
995 }
996 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
997 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
998 *cur_dsd++ = cpu_to_le32(sle_dma_len);
999 avail_dsds--;
1000
1001 if (partial == 0) {
1002 /* Got a full protection interval */
1003 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len;
1004 sle_dma_len = 8;
1005
1006 tot_prot_dma_len += sle_dma_len;
1007 if (tot_prot_dma_len == sg_dma_len(sg_prot)) {
1008 tot_prot_dma_len = 0;
1009 sg_prot = sg_next(sg_prot);
1010 }
1011
1012 partial = 1; /* So as to not re-enter this block */
1013 goto alloc_and_fill;
1014 }
1015 }
1016 /* Null termination */
1017 *cur_dsd++ = 0;
1018 *cur_dsd++ = 0;
1019 *cur_dsd++ = 0;
1020 return 0;
1021 }
1022
1023 int
1024 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
1025 uint16_t tot_dsds, struct qla_tgt_cmd *tc)
1026 {
1027 void *next_dsd;
1028 uint8_t avail_dsds = 0;
1029 uint32_t dsd_list_len;
1030 struct dsd_dma *dsd_ptr;
1031 struct scatterlist *sg, *sgl;
1032 uint32_t *cur_dsd = dsd;
1033 int i;
1034 uint16_t used_dsds = tot_dsds;
1035 struct scsi_cmnd *cmd;
1036
1037 if (sp) {
1038 cmd = GET_CMD_SP(sp);
1039 sgl = scsi_sglist(cmd);
1040 } else if (tc) {
1041 sgl = tc->sg;
1042 } else {
1043 BUG();
1044 return 1;
1045 }
1046
1047
1048 for_each_sg(sgl, sg, tot_dsds, i) {
1049 dma_addr_t sle_dma;
1050
1051 /* Allocate additional continuation packets? */
1052 if (avail_dsds == 0) {
1053 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1054 QLA_DSDS_PER_IOCB : used_dsds;
1055 dsd_list_len = (avail_dsds + 1) * 12;
1056 used_dsds -= avail_dsds;
1057
1058 /* allocate tracking DS */
1059 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
1060 if (!dsd_ptr)
1061 return 1;
1062
1063 /* allocate new list */
1064 dsd_ptr->dsd_addr = next_dsd =
1065 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1066 &dsd_ptr->dsd_list_dma);
1067
1068 if (!next_dsd) {
1069 /*
1070 * Need to cleanup only this dsd_ptr, rest
1071 * will be done by sp_free_dma()
1072 */
1073 kfree(dsd_ptr);
1074 return 1;
1075 }
1076
1077 if (sp) {
1078 list_add_tail(&dsd_ptr->list,
1079 &((struct crc_context *)
1080 sp->u.scmd.ctx)->dsd_list);
1081
1082 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1083 } else {
1084 list_add_tail(&dsd_ptr->list,
1085 &(tc->ctx->dsd_list));
1086 tc->ctx_dsd_alloced = 1;
1087 }
1088
1089 /* add new list to cmd iocb or last list */
1090 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1091 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1092 *cur_dsd++ = dsd_list_len;
1093 cur_dsd = (uint32_t *)next_dsd;
1094 }
1095 sle_dma = sg_dma_address(sg);
1096
1097 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1098 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1099 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1100 avail_dsds--;
1101
1102 }
1103 /* Null termination */
1104 *cur_dsd++ = 0;
1105 *cur_dsd++ = 0;
1106 *cur_dsd++ = 0;
1107 return 0;
1108 }
1109
1110 int
1111 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
1112 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
1113 {
1114 void *next_dsd;
1115 uint8_t avail_dsds = 0;
1116 uint32_t dsd_list_len;
1117 struct dsd_dma *dsd_ptr;
1118 struct scatterlist *sg, *sgl;
1119 int i;
1120 struct scsi_cmnd *cmd;
1121 uint32_t *cur_dsd = dsd;
1122 uint16_t used_dsds = tot_dsds;
1123 struct scsi_qla_host *vha;
1124
1125 if (sp) {
1126 cmd = GET_CMD_SP(sp);
1127 sgl = scsi_prot_sglist(cmd);
1128 vha = sp->fcport->vha;
1129 } else if (tc) {
1130 vha = tc->vha;
1131 sgl = tc->prot_sg;
1132 } else {
1133 BUG();
1134 return 1;
1135 }
1136
1137 ql_dbg(ql_dbg_tgt, vha, 0xe021,
1138 "%s: enter\n", __func__);
1139
1140 for_each_sg(sgl, sg, tot_dsds, i) {
1141 dma_addr_t sle_dma;
1142
1143 /* Allocate additional continuation packets? */
1144 if (avail_dsds == 0) {
1145 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1146 QLA_DSDS_PER_IOCB : used_dsds;
1147 dsd_list_len = (avail_dsds + 1) * 12;
1148 used_dsds -= avail_dsds;
1149
1150 /* allocate tracking DS */
1151 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
1152 if (!dsd_ptr)
1153 return 1;
1154
1155 /* allocate new list */
1156 dsd_ptr->dsd_addr = next_dsd =
1157 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1158 &dsd_ptr->dsd_list_dma);
1159
1160 if (!next_dsd) {
1161 /*
1162 * Need to cleanup only this dsd_ptr, rest
1163 * will be done by sp_free_dma()
1164 */
1165 kfree(dsd_ptr);
1166 return 1;
1167 }
1168
1169 if (sp) {
1170 list_add_tail(&dsd_ptr->list,
1171 &((struct crc_context *)
1172 sp->u.scmd.ctx)->dsd_list);
1173
1174 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1175 } else {
1176 list_add_tail(&dsd_ptr->list,
1177 &(tc->ctx->dsd_list));
1178 tc->ctx_dsd_alloced = 1;
1179 }
1180
1181 /* add new list to cmd iocb or last list */
1182 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1183 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1184 *cur_dsd++ = dsd_list_len;
1185 cur_dsd = (uint32_t *)next_dsd;
1186 }
1187 sle_dma = sg_dma_address(sg);
1188
1189 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1190 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1191 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1192
1193 avail_dsds--;
1194 }
1195 /* Null termination */
1196 *cur_dsd++ = 0;
1197 *cur_dsd++ = 0;
1198 *cur_dsd++ = 0;
1199 return 0;
1200 }
1201
1202 /**
1203 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command
1204 * Type 6 IOCB types.
1205 *
1206 * @sp: SRB command to process
1207 * @cmd_pkt: Command type 3 IOCB
1208 * @tot_dsds: Total number of segments to transfer
1209 */
1210 static inline int
1211 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
1212 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts)
1213 {
1214 uint32_t *cur_dsd, *fcp_dl;
1215 scsi_qla_host_t *vha;
1216 struct scsi_cmnd *cmd;
1217 uint32_t total_bytes = 0;
1218 uint32_t data_bytes;
1219 uint32_t dif_bytes;
1220 uint8_t bundling = 1;
1221 uint16_t blk_size;
1222 uint8_t *clr_ptr;
1223 struct crc_context *crc_ctx_pkt = NULL;
1224 struct qla_hw_data *ha;
1225 uint8_t additional_fcpcdb_len;
1226 uint16_t fcp_cmnd_len;
1227 struct fcp_cmnd *fcp_cmnd;
1228 dma_addr_t crc_ctx_dma;
1229
1230 cmd = GET_CMD_SP(sp);
1231
1232 /* Update entry type to indicate Command Type CRC_2 IOCB */
1233 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_CRC_2);
1234
1235 vha = sp->fcport->vha;
1236 ha = vha->hw;
1237
1238 /* No data transfer */
1239 data_bytes = scsi_bufflen(cmd);
1240 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1241 cmd_pkt->byte_count = cpu_to_le32(0);
1242 return QLA_SUCCESS;
1243 }
1244
1245 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
1246
1247 /* Set transfer direction */
1248 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
1249 cmd_pkt->control_flags =
1250 cpu_to_le16(CF_WRITE_DATA);
1251 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
1252 cmd_pkt->control_flags =
1253 cpu_to_le16(CF_READ_DATA);
1254 }
1255
1256 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1257 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) ||
1258 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) ||
1259 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT))
1260 bundling = 0;
1261
1262 /* Allocate CRC context from global pool */
1263 crc_ctx_pkt = sp->u.scmd.ctx =
1264 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
1265
1266 if (!crc_ctx_pkt)
1267 goto crc_queuing_error;
1268
1269 /* Zero out CTX area. */
1270 clr_ptr = (uint8_t *)crc_ctx_pkt;
1271 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
1272
1273 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
1274
1275 sp->flags |= SRB_CRC_CTX_DMA_VALID;
1276
1277 /* Set handle */
1278 crc_ctx_pkt->handle = cmd_pkt->handle;
1279
1280 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
1281
1282 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *)
1283 &crc_ctx_pkt->ref_tag, tot_prot_dsds);
1284
1285 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
1286 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
1287 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
1288
1289 /* Determine SCSI command length -- align to 4 byte boundary */
1290 if (cmd->cmd_len > 16) {
1291 additional_fcpcdb_len = cmd->cmd_len - 16;
1292 if ((cmd->cmd_len % 4) != 0) {
1293 /* SCSI cmd > 16 bytes must be multiple of 4 */
1294 goto crc_queuing_error;
1295 }
1296 fcp_cmnd_len = 12 + cmd->cmd_len + 4;
1297 } else {
1298 additional_fcpcdb_len = 0;
1299 fcp_cmnd_len = 12 + 16 + 4;
1300 }
1301
1302 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd;
1303
1304 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len;
1305 if (cmd->sc_data_direction == DMA_TO_DEVICE)
1306 fcp_cmnd->additional_cdb_len |= 1;
1307 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
1308 fcp_cmnd->additional_cdb_len |= 2;
1309
1310 int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun);
1311 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
1312 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len);
1313 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32(
1314 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1315 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32(
1316 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1317 fcp_cmnd->task_management = 0;
1318 fcp_cmnd->task_attribute = TSK_SIMPLE;
1319
1320 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
1321
1322 /* Compute dif len and adjust data len to incude protection */
1323 dif_bytes = 0;
1324 blk_size = cmd->device->sector_size;
1325 dif_bytes = (data_bytes / blk_size) * 8;
1326
1327 switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
1328 case SCSI_PROT_READ_INSERT:
1329 case SCSI_PROT_WRITE_STRIP:
1330 total_bytes = data_bytes;
1331 data_bytes += dif_bytes;
1332 break;
1333
1334 case SCSI_PROT_READ_STRIP:
1335 case SCSI_PROT_WRITE_INSERT:
1336 case SCSI_PROT_READ_PASS:
1337 case SCSI_PROT_WRITE_PASS:
1338 total_bytes = data_bytes + dif_bytes;
1339 break;
1340 default:
1341 BUG();
1342 }
1343
1344 if (!qla2x00_hba_err_chk_enabled(sp))
1345 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
1346 /* HBA error checking enabled */
1347 else if (IS_PI_UNINIT_CAPABLE(ha)) {
1348 if ((scsi_get_prot_type(GET_CMD_SP(sp)) == SCSI_PROT_DIF_TYPE1)
1349 || (scsi_get_prot_type(GET_CMD_SP(sp)) ==
1350 SCSI_PROT_DIF_TYPE2))
1351 fw_prot_opts |= BIT_10;
1352 else if (scsi_get_prot_type(GET_CMD_SP(sp)) ==
1353 SCSI_PROT_DIF_TYPE3)
1354 fw_prot_opts |= BIT_11;
1355 }
1356
1357 if (!bundling) {
1358 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
1359 } else {
1360 /*
1361 * Configure Bundling if we need to fetch interlaving
1362 * protection PCI accesses
1363 */
1364 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
1365 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
1366 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds -
1367 tot_prot_dsds);
1368 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
1369 }
1370
1371 /* Finish the common fields of CRC pkt */
1372 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size);
1373 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
1374 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
1375 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
1376 /* Fibre channel byte count */
1377 cmd_pkt->byte_count = cpu_to_le32(total_bytes);
1378 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 +
1379 additional_fcpcdb_len);
1380 *fcp_dl = htonl(total_bytes);
1381
1382 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1383 cmd_pkt->byte_count = cpu_to_le32(0);
1384 return QLA_SUCCESS;
1385 }
1386 /* Walks data segments */
1387
1388 cmd_pkt->control_flags |= cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE);
1389
1390 if (!bundling && tot_prot_dsds) {
1391 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp,
1392 cur_dsd, tot_dsds, NULL))
1393 goto crc_queuing_error;
1394 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd,
1395 (tot_dsds - tot_prot_dsds), NULL))
1396 goto crc_queuing_error;
1397
1398 if (bundling && tot_prot_dsds) {
1399 /* Walks dif segments */
1400 cmd_pkt->control_flags |= cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE);
1401 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
1402 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd,
1403 tot_prot_dsds, NULL))
1404 goto crc_queuing_error;
1405 }
1406 return QLA_SUCCESS;
1407
1408 crc_queuing_error:
1409 /* Cleanup will be performed by the caller */
1410
1411 return QLA_FUNCTION_FAILED;
1412 }
1413
1414 /**
1415 * qla24xx_start_scsi() - Send a SCSI command to the ISP
1416 * @sp: command to send to the ISP
1417 *
1418 * Returns non-zero if a failure occurred, else zero.
1419 */
1420 int
1421 qla24xx_start_scsi(srb_t *sp)
1422 {
1423 int nseg;
1424 unsigned long flags;
1425 uint32_t *clr_ptr;
1426 uint32_t index;
1427 uint32_t handle;
1428 struct cmd_type_7 *cmd_pkt;
1429 uint16_t cnt;
1430 uint16_t req_cnt;
1431 uint16_t tot_dsds;
1432 struct req_que *req = NULL;
1433 struct rsp_que *rsp = NULL;
1434 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1435 struct scsi_qla_host *vha = sp->fcport->vha;
1436 struct qla_hw_data *ha = vha->hw;
1437
1438 /* Setup device pointers. */
1439 qla25xx_set_que(sp, &rsp);
1440 req = vha->req;
1441
1442 /* So we know we haven't pci_map'ed anything yet */
1443 tot_dsds = 0;
1444
1445 /* Send marker if required */
1446 if (vha->marker_needed != 0) {
1447 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1448 QLA_SUCCESS)
1449 return QLA_FUNCTION_FAILED;
1450 vha->marker_needed = 0;
1451 }
1452
1453 /* Acquire ring specific lock */
1454 spin_lock_irqsave(&ha->hardware_lock, flags);
1455
1456 /* Check for room in outstanding command list. */
1457 handle = req->current_outstanding_cmd;
1458 for (index = 1; index < req->num_outstanding_cmds; index++) {
1459 handle++;
1460 if (handle == req->num_outstanding_cmds)
1461 handle = 1;
1462 if (!req->outstanding_cmds[handle])
1463 break;
1464 }
1465 if (index == req->num_outstanding_cmds)
1466 goto queuing_error;
1467
1468 /* Map the sg table so we have an accurate count of sg entries needed */
1469 if (scsi_sg_count(cmd)) {
1470 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1471 scsi_sg_count(cmd), cmd->sc_data_direction);
1472 if (unlikely(!nseg))
1473 goto queuing_error;
1474 } else
1475 nseg = 0;
1476
1477 tot_dsds = nseg;
1478 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
1479 if (req->cnt < (req_cnt + 2)) {
1480 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
1481 RD_REG_DWORD_RELAXED(req->req_q_out);
1482 if (req->ring_index < cnt)
1483 req->cnt = cnt - req->ring_index;
1484 else
1485 req->cnt = req->length -
1486 (req->ring_index - cnt);
1487 if (req->cnt < (req_cnt + 2))
1488 goto queuing_error;
1489 }
1490
1491 /* Build command packet. */
1492 req->current_outstanding_cmd = handle;
1493 req->outstanding_cmds[handle] = sp;
1494 sp->handle = handle;
1495 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1496 req->cnt -= req_cnt;
1497
1498 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
1499 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1500
1501 /* Zero out remaining portion of packet. */
1502 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
1503 clr_ptr = (uint32_t *)cmd_pkt + 2;
1504 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1505 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1506
1507 /* Set NPORT-ID and LUN number*/
1508 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1509 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1510 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1511 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1512 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
1513
1514 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
1515 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1516
1517 cmd_pkt->task = TSK_SIMPLE;
1518
1519 /* Load SCSI command packet. */
1520 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
1521 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
1522
1523 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
1524
1525 /* Build IOCB segments */
1526 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
1527
1528 /* Set total data segment count. */
1529 cmd_pkt->entry_count = (uint8_t)req_cnt;
1530 /* Specify response queue number where completion should happen */
1531 cmd_pkt->entry_status = (uint8_t) rsp->id;
1532 wmb();
1533 /* Adjust ring index. */
1534 req->ring_index++;
1535 if (req->ring_index == req->length) {
1536 req->ring_index = 0;
1537 req->ring_ptr = req->ring;
1538 } else
1539 req->ring_ptr++;
1540
1541 sp->flags |= SRB_DMA_VALID;
1542
1543 /* Set chip new ring index. */
1544 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1545 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1546
1547 /* Manage unprocessed RIO/ZIO commands in response queue. */
1548 if (vha->flags.process_response_queue &&
1549 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1550 qla24xx_process_response_queue(vha, rsp);
1551
1552 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1553 return QLA_SUCCESS;
1554
1555 queuing_error:
1556 if (tot_dsds)
1557 scsi_dma_unmap(cmd);
1558
1559 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1560
1561 return QLA_FUNCTION_FAILED;
1562 }
1563
1564 /**
1565 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP
1566 * @sp: command to send to the ISP
1567 *
1568 * Returns non-zero if a failure occurred, else zero.
1569 */
1570 int
1571 qla24xx_dif_start_scsi(srb_t *sp)
1572 {
1573 int nseg;
1574 unsigned long flags;
1575 uint32_t *clr_ptr;
1576 uint32_t index;
1577 uint32_t handle;
1578 uint16_t cnt;
1579 uint16_t req_cnt = 0;
1580 uint16_t tot_dsds;
1581 uint16_t tot_prot_dsds;
1582 uint16_t fw_prot_opts = 0;
1583 struct req_que *req = NULL;
1584 struct rsp_que *rsp = NULL;
1585 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1586 struct scsi_qla_host *vha = sp->fcport->vha;
1587 struct qla_hw_data *ha = vha->hw;
1588 struct cmd_type_crc_2 *cmd_pkt;
1589 uint32_t status = 0;
1590
1591 #define QDSS_GOT_Q_SPACE BIT_0
1592
1593 /* Only process protection or >16 cdb in this routine */
1594 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
1595 if (cmd->cmd_len <= 16)
1596 return qla24xx_start_scsi(sp);
1597 }
1598
1599 /* Setup device pointers. */
1600
1601 qla25xx_set_que(sp, &rsp);
1602 req = vha->req;
1603
1604 /* So we know we haven't pci_map'ed anything yet */
1605 tot_dsds = 0;
1606
1607 /* Send marker if required */
1608 if (vha->marker_needed != 0) {
1609 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1610 QLA_SUCCESS)
1611 return QLA_FUNCTION_FAILED;
1612 vha->marker_needed = 0;
1613 }
1614
1615 /* Acquire ring specific lock */
1616 spin_lock_irqsave(&ha->hardware_lock, flags);
1617
1618 /* Check for room in outstanding command list. */
1619 handle = req->current_outstanding_cmd;
1620 for (index = 1; index < req->num_outstanding_cmds; index++) {
1621 handle++;
1622 if (handle == req->num_outstanding_cmds)
1623 handle = 1;
1624 if (!req->outstanding_cmds[handle])
1625 break;
1626 }
1627
1628 if (index == req->num_outstanding_cmds)
1629 goto queuing_error;
1630
1631 /* Compute number of required data segments */
1632 /* Map the sg table so we have an accurate count of sg entries needed */
1633 if (scsi_sg_count(cmd)) {
1634 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1635 scsi_sg_count(cmd), cmd->sc_data_direction);
1636 if (unlikely(!nseg))
1637 goto queuing_error;
1638 else
1639 sp->flags |= SRB_DMA_VALID;
1640
1641 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1642 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1643 struct qla2_sgx sgx;
1644 uint32_t partial;
1645
1646 memset(&sgx, 0, sizeof(struct qla2_sgx));
1647 sgx.tot_bytes = scsi_bufflen(cmd);
1648 sgx.cur_sg = scsi_sglist(cmd);
1649 sgx.sp = sp;
1650
1651 nseg = 0;
1652 while (qla24xx_get_one_block_sg(
1653 cmd->device->sector_size, &sgx, &partial))
1654 nseg++;
1655 }
1656 } else
1657 nseg = 0;
1658
1659 /* number of required data segments */
1660 tot_dsds = nseg;
1661
1662 /* Compute number of required protection segments */
1663 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
1664 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
1665 scsi_prot_sg_count(cmd), cmd->sc_data_direction);
1666 if (unlikely(!nseg))
1667 goto queuing_error;
1668 else
1669 sp->flags |= SRB_CRC_PROT_DMA_VALID;
1670
1671 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1672 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1673 nseg = scsi_bufflen(cmd) / cmd->device->sector_size;
1674 }
1675 } else {
1676 nseg = 0;
1677 }
1678
1679 req_cnt = 1;
1680 /* Total Data and protection sg segment(s) */
1681 tot_prot_dsds = nseg;
1682 tot_dsds += nseg;
1683 if (req->cnt < (req_cnt + 2)) {
1684 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
1685 RD_REG_DWORD_RELAXED(req->req_q_out);
1686 if (req->ring_index < cnt)
1687 req->cnt = cnt - req->ring_index;
1688 else
1689 req->cnt = req->length -
1690 (req->ring_index - cnt);
1691 if (req->cnt < (req_cnt + 2))
1692 goto queuing_error;
1693 }
1694
1695 status |= QDSS_GOT_Q_SPACE;
1696
1697 /* Build header part of command packet (excluding the OPCODE). */
1698 req->current_outstanding_cmd = handle;
1699 req->outstanding_cmds[handle] = sp;
1700 sp->handle = handle;
1701 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1702 req->cnt -= req_cnt;
1703
1704 /* Fill-in common area */
1705 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
1706 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1707
1708 clr_ptr = (uint32_t *)cmd_pkt + 2;
1709 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1710
1711 /* Set NPORT-ID and LUN number*/
1712 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1713 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1714 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1715 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1716
1717 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
1718 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1719
1720 /* Total Data and protection segment(s) */
1721 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1722
1723 /* Build IOCB segments and adjust for data protection segments */
1724 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
1725 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
1726 QLA_SUCCESS)
1727 goto queuing_error;
1728
1729 cmd_pkt->entry_count = (uint8_t)req_cnt;
1730 /* Specify response queue number where completion should happen */
1731 cmd_pkt->entry_status = (uint8_t) rsp->id;
1732 cmd_pkt->timeout = cpu_to_le16(0);
1733 wmb();
1734
1735 /* Adjust ring index. */
1736 req->ring_index++;
1737 if (req->ring_index == req->length) {
1738 req->ring_index = 0;
1739 req->ring_ptr = req->ring;
1740 } else
1741 req->ring_ptr++;
1742
1743 /* Set chip new ring index. */
1744 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1745 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1746
1747 /* Manage unprocessed RIO/ZIO commands in response queue. */
1748 if (vha->flags.process_response_queue &&
1749 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1750 qla24xx_process_response_queue(vha, rsp);
1751
1752 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1753
1754 return QLA_SUCCESS;
1755
1756 queuing_error:
1757 if (status & QDSS_GOT_Q_SPACE) {
1758 req->outstanding_cmds[handle] = NULL;
1759 req->cnt += req_cnt;
1760 }
1761 /* Cleanup will be performed by the caller (queuecommand) */
1762
1763 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1764 return QLA_FUNCTION_FAILED;
1765 }
1766
1767
1768 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp)
1769 {
1770 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1771 struct qla_hw_data *ha = sp->fcport->vha->hw;
1772 int affinity = cmd->request->cpu;
1773
1774 if (ha->flags.cpu_affinity_enabled && affinity >= 0 &&
1775 affinity < ha->max_rsp_queues - 1)
1776 *rsp = ha->rsp_q_map[affinity + 1];
1777 else
1778 *rsp = ha->rsp_q_map[0];
1779 }
1780
1781 /* Generic Control-SRB manipulation functions. */
1782
1783 /* hardware_lock assumed to be held. */
1784 void *
1785 qla2x00_alloc_iocbs_ready(scsi_qla_host_t *vha, srb_t *sp)
1786 {
1787 if (qla2x00_reset_active(vha))
1788 return NULL;
1789
1790 return qla2x00_alloc_iocbs(vha, sp);
1791 }
1792
1793 void *
1794 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp)
1795 {
1796 struct qla_hw_data *ha = vha->hw;
1797 struct req_que *req = ha->req_q_map[0];
1798 device_reg_t *reg = ISP_QUE_REG(ha, req->id);
1799 uint32_t index, handle;
1800 request_t *pkt;
1801 uint16_t cnt, req_cnt;
1802
1803 pkt = NULL;
1804 req_cnt = 1;
1805 handle = 0;
1806
1807 if (!sp)
1808 goto skip_cmd_array;
1809
1810 /* Check for room in outstanding command list. */
1811 handle = req->current_outstanding_cmd;
1812 for (index = 1; index < req->num_outstanding_cmds; index++) {
1813 handle++;
1814 if (handle == req->num_outstanding_cmds)
1815 handle = 1;
1816 if (!req->outstanding_cmds[handle])
1817 break;
1818 }
1819 if (index == req->num_outstanding_cmds) {
1820 ql_log(ql_log_warn, vha, 0x700b,
1821 "No room on outstanding cmd array.\n");
1822 goto queuing_error;
1823 }
1824
1825 /* Prep command array. */
1826 req->current_outstanding_cmd = handle;
1827 req->outstanding_cmds[handle] = sp;
1828 sp->handle = handle;
1829
1830 /* Adjust entry-counts as needed. */
1831 if (sp->type != SRB_SCSI_CMD)
1832 req_cnt = sp->iocbs;
1833
1834 skip_cmd_array:
1835 /* Check for room on request queue. */
1836 if (req->cnt < req_cnt + 2) {
1837 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha))
1838 cnt = RD_REG_DWORD(&reg->isp25mq.req_q_out);
1839 else if (IS_P3P_TYPE(ha))
1840 cnt = RD_REG_DWORD(&reg->isp82.req_q_out);
1841 else if (IS_FWI2_CAPABLE(ha))
1842 cnt = RD_REG_DWORD(&reg->isp24.req_q_out);
1843 else if (IS_QLAFX00(ha))
1844 cnt = RD_REG_DWORD(&reg->ispfx00.req_q_out);
1845 else
1846 cnt = qla2x00_debounce_register(
1847 ISP_REQ_Q_OUT(ha, &reg->isp));
1848
1849 if (req->ring_index < cnt)
1850 req->cnt = cnt - req->ring_index;
1851 else
1852 req->cnt = req->length -
1853 (req->ring_index - cnt);
1854 }
1855 if (req->cnt < req_cnt + 2)
1856 goto queuing_error;
1857
1858 /* Prep packet */
1859 req->cnt -= req_cnt;
1860 pkt = req->ring_ptr;
1861 memset(pkt, 0, REQUEST_ENTRY_SIZE);
1862 if (IS_QLAFX00(ha)) {
1863 WRT_REG_BYTE((void __iomem *)&pkt->entry_count, req_cnt);
1864 WRT_REG_WORD((void __iomem *)&pkt->handle, handle);
1865 } else {
1866 pkt->entry_count = req_cnt;
1867 pkt->handle = handle;
1868 }
1869
1870 queuing_error:
1871 vha->tgt_counters.num_alloc_iocb_failed++;
1872 return pkt;
1873 }
1874
1875 static void
1876 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1877 {
1878 struct srb_iocb *lio = &sp->u.iocb_cmd;
1879
1880 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1881 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
1882 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
1883 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
1884 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
1885 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
1886 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1887 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1888 logio->port_id[1] = sp->fcport->d_id.b.area;
1889 logio->port_id[2] = sp->fcport->d_id.b.domain;
1890 logio->vp_index = sp->fcport->vha->vp_idx;
1891 }
1892
1893 static void
1894 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
1895 {
1896 struct qla_hw_data *ha = sp->fcport->vha->hw;
1897 struct srb_iocb *lio = &sp->u.iocb_cmd;
1898 uint16_t opts;
1899
1900 mbx->entry_type = MBX_IOCB_TYPE;
1901 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1902 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
1903 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0;
1904 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0;
1905 if (HAS_EXTENDED_IDS(ha)) {
1906 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1907 mbx->mb10 = cpu_to_le16(opts);
1908 } else {
1909 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts);
1910 }
1911 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1912 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1913 sp->fcport->d_id.b.al_pa);
1914 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
1915 }
1916
1917 static void
1918 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1919 {
1920 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1921 logio->control_flags =
1922 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
1923 if (!sp->fcport->tgt_session ||
1924 !sp->fcport->tgt_session->keep_nport_handle)
1925 logio->control_flags |= cpu_to_le16(LCF_FREE_NPORT);
1926 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1927 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1928 logio->port_id[1] = sp->fcport->d_id.b.area;
1929 logio->port_id[2] = sp->fcport->d_id.b.domain;
1930 logio->vp_index = sp->fcport->vha->vp_idx;
1931 }
1932
1933 static void
1934 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx)
1935 {
1936 struct qla_hw_data *ha = sp->fcport->vha->hw;
1937
1938 mbx->entry_type = MBX_IOCB_TYPE;
1939 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1940 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
1941 mbx->mb1 = HAS_EXTENDED_IDS(ha) ?
1942 cpu_to_le16(sp->fcport->loop_id):
1943 cpu_to_le16(sp->fcport->loop_id << 8);
1944 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1945 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1946 sp->fcport->d_id.b.al_pa);
1947 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
1948 /* Implicit: mbx->mbx10 = 0. */
1949 }
1950
1951 static void
1952 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1953 {
1954 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1955 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC);
1956 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1957 logio->vp_index = sp->fcport->vha->vp_idx;
1958 }
1959
1960 static void
1961 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx)
1962 {
1963 struct qla_hw_data *ha = sp->fcport->vha->hw;
1964
1965 mbx->entry_type = MBX_IOCB_TYPE;
1966 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1967 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE);
1968 if (HAS_EXTENDED_IDS(ha)) {
1969 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1970 mbx->mb10 = cpu_to_le16(BIT_0);
1971 } else {
1972 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0);
1973 }
1974 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma));
1975 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma));
1976 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma)));
1977 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma)));
1978 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
1979 }
1980
1981 static void
1982 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk)
1983 {
1984 uint32_t flags;
1985 uint64_t lun;
1986 struct fc_port *fcport = sp->fcport;
1987 scsi_qla_host_t *vha = fcport->vha;
1988 struct qla_hw_data *ha = vha->hw;
1989 struct srb_iocb *iocb = &sp->u.iocb_cmd;
1990 struct req_que *req = vha->req;
1991
1992 flags = iocb->u.tmf.flags;
1993 lun = iocb->u.tmf.lun;
1994
1995 tsk->entry_type = TSK_MGMT_IOCB_TYPE;
1996 tsk->entry_count = 1;
1997 tsk->handle = MAKE_HANDLE(req->id, tsk->handle);
1998 tsk->nport_handle = cpu_to_le16(fcport->loop_id);
1999 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
2000 tsk->control_flags = cpu_to_le32(flags);
2001 tsk->port_id[0] = fcport->d_id.b.al_pa;
2002 tsk->port_id[1] = fcport->d_id.b.area;
2003 tsk->port_id[2] = fcport->d_id.b.domain;
2004 tsk->vp_index = fcport->vha->vp_idx;
2005
2006 if (flags == TCF_LUN_RESET) {
2007 int_to_scsilun(lun, &tsk->lun);
2008 host_to_fcp_swap((uint8_t *)&tsk->lun,
2009 sizeof(tsk->lun));
2010 }
2011 }
2012
2013 static void
2014 qla2x00_els_dcmd_sp_free(void *ptr, void *data)
2015 {
2016 struct scsi_qla_host *vha = (scsi_qla_host_t *)ptr;
2017 struct qla_hw_data *ha = vha->hw;
2018 srb_t *sp = (srb_t *)data;
2019 struct srb_iocb *elsio = &sp->u.iocb_cmd;
2020
2021 kfree(sp->fcport);
2022
2023 if (elsio->u.els_logo.els_logo_pyld)
2024 dma_free_coherent(&ha->pdev->dev, DMA_POOL_SIZE,
2025 elsio->u.els_logo.els_logo_pyld,
2026 elsio->u.els_logo.els_logo_pyld_dma);
2027
2028 del_timer(&elsio->timer);
2029 qla2x00_rel_sp(vha, sp);
2030 }
2031
2032 static void
2033 qla2x00_els_dcmd_iocb_timeout(void *data)
2034 {
2035 srb_t *sp = (srb_t *)data;
2036 struct srb_iocb *lio = &sp->u.iocb_cmd;
2037 fc_port_t *fcport = sp->fcport;
2038 struct scsi_qla_host *vha = fcport->vha;
2039 struct qla_hw_data *ha = vha->hw;
2040 unsigned long flags = 0;
2041
2042 ql_dbg(ql_dbg_io, vha, 0x3069,
2043 "%s Timeout, hdl=%x, portid=%02x%02x%02x\n",
2044 sp->name, sp->handle, fcport->d_id.b.domain, fcport->d_id.b.area,
2045 fcport->d_id.b.al_pa);
2046
2047 /* Abort the exchange */
2048 spin_lock_irqsave(&ha->hardware_lock, flags);
2049 if (ha->isp_ops->abort_command(sp)) {
2050 ql_dbg(ql_dbg_io, vha, 0x3070,
2051 "mbx abort_command failed.\n");
2052 } else {
2053 ql_dbg(ql_dbg_io, vha, 0x3071,
2054 "mbx abort_command success.\n");
2055 }
2056 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2057
2058 complete(&lio->u.els_logo.comp);
2059 }
2060
2061 static void
2062 qla2x00_els_dcmd_sp_done(void *data, void *ptr, int res)
2063 {
2064 srb_t *sp = (srb_t *)ptr;
2065 fc_port_t *fcport = sp->fcport;
2066 struct srb_iocb *lio = &sp->u.iocb_cmd;
2067 struct scsi_qla_host *vha = fcport->vha;
2068
2069 ql_dbg(ql_dbg_io, vha, 0x3072,
2070 "%s hdl=%x, portid=%02x%02x%02x done\n",
2071 sp->name, sp->handle, fcport->d_id.b.domain,
2072 fcport->d_id.b.area, fcport->d_id.b.al_pa);
2073
2074 complete(&lio->u.els_logo.comp);
2075 }
2076
2077 int
2078 qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode,
2079 port_id_t remote_did)
2080 {
2081 srb_t *sp;
2082 fc_port_t *fcport = NULL;
2083 struct srb_iocb *elsio = NULL;
2084 struct qla_hw_data *ha = vha->hw;
2085 struct els_logo_payload logo_pyld;
2086 int rval = QLA_SUCCESS;
2087
2088 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2089 if (!fcport) {
2090 ql_log(ql_log_info, vha, 0x70e5, "fcport allocation failed\n");
2091 return -ENOMEM;
2092 }
2093
2094 /* Alloc SRB structure */
2095 sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
2096 if (!sp) {
2097 kfree(fcport);
2098 ql_log(ql_log_info, vha, 0x70e6,
2099 "SRB allocation failed\n");
2100 return -ENOMEM;
2101 }
2102
2103 elsio = &sp->u.iocb_cmd;
2104 fcport->loop_id = 0xFFFF;
2105 fcport->d_id.b.domain = remote_did.b.domain;
2106 fcport->d_id.b.area = remote_did.b.area;
2107 fcport->d_id.b.al_pa = remote_did.b.al_pa;
2108
2109 ql_dbg(ql_dbg_io, vha, 0x3073, "portid=%02x%02x%02x done\n",
2110 fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa);
2111
2112 sp->type = SRB_ELS_DCMD;
2113 sp->name = "ELS_DCMD";
2114 sp->fcport = fcport;
2115 qla2x00_init_timer(sp, ELS_DCMD_TIMEOUT);
2116 elsio->timeout = qla2x00_els_dcmd_iocb_timeout;
2117 sp->done = qla2x00_els_dcmd_sp_done;
2118 sp->free = qla2x00_els_dcmd_sp_free;
2119
2120 elsio->u.els_logo.els_logo_pyld = dma_alloc_coherent(&ha->pdev->dev,
2121 DMA_POOL_SIZE, &elsio->u.els_logo.els_logo_pyld_dma,
2122 GFP_KERNEL);
2123
2124 if (!elsio->u.els_logo.els_logo_pyld) {
2125 sp->free(vha, sp);
2126 return QLA_FUNCTION_FAILED;
2127 }
2128
2129 memset(&logo_pyld, 0, sizeof(struct els_logo_payload));
2130
2131 elsio->u.els_logo.els_cmd = els_opcode;
2132 logo_pyld.opcode = els_opcode;
2133 logo_pyld.s_id[0] = vha->d_id.b.al_pa;
2134 logo_pyld.s_id[1] = vha->d_id.b.area;
2135 logo_pyld.s_id[2] = vha->d_id.b.domain;
2136 host_to_fcp_swap(logo_pyld.s_id, sizeof(uint32_t));
2137 memcpy(&logo_pyld.wwpn, vha->port_name, WWN_SIZE);
2138
2139 memcpy(elsio->u.els_logo.els_logo_pyld, &logo_pyld,
2140 sizeof(struct els_logo_payload));
2141
2142 rval = qla2x00_start_sp(sp);
2143 if (rval != QLA_SUCCESS) {
2144 sp->free(vha, sp);
2145 return QLA_FUNCTION_FAILED;
2146 }
2147
2148 ql_dbg(ql_dbg_io, vha, 0x3074,
2149 "%s LOGO sent, hdl=%x, loopid=%x, portid=%02x%02x%02x.\n",
2150 sp->name, sp->handle, fcport->loop_id, fcport->d_id.b.domain,
2151 fcport->d_id.b.area, fcport->d_id.b.al_pa);
2152
2153 wait_for_completion(&elsio->u.els_logo.comp);
2154
2155 sp->free(vha, sp);
2156 return rval;
2157 }
2158
2159 static void
2160 qla24xx_els_logo_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
2161 {
2162 scsi_qla_host_t *vha = sp->fcport->vha;
2163 struct srb_iocb *elsio = &sp->u.iocb_cmd;
2164
2165 els_iocb->entry_type = ELS_IOCB_TYPE;
2166 els_iocb->entry_count = 1;
2167 els_iocb->sys_define = 0;
2168 els_iocb->entry_status = 0;
2169 els_iocb->handle = sp->handle;
2170 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2171 els_iocb->tx_dsd_count = 1;
2172 els_iocb->vp_index = vha->vp_idx;
2173 els_iocb->sof_type = EST_SOFI3;
2174 els_iocb->rx_dsd_count = 0;
2175 els_iocb->opcode = elsio->u.els_logo.els_cmd;
2176
2177 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2178 els_iocb->port_id[1] = sp->fcport->d_id.b.area;
2179 els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2180 els_iocb->control_flags = 0;
2181
2182 els_iocb->tx_byte_count = sizeof(struct els_logo_payload);
2183 els_iocb->tx_address[0] =
2184 cpu_to_le32(LSD(elsio->u.els_logo.els_logo_pyld_dma));
2185 els_iocb->tx_address[1] =
2186 cpu_to_le32(MSD(elsio->u.els_logo.els_logo_pyld_dma));
2187 els_iocb->tx_len = cpu_to_le32(sizeof(struct els_logo_payload));
2188
2189 els_iocb->rx_byte_count = 0;
2190 els_iocb->rx_address[0] = 0;
2191 els_iocb->rx_address[1] = 0;
2192 els_iocb->rx_len = 0;
2193
2194 sp->fcport->vha->qla_stats.control_requests++;
2195 }
2196
2197 static void
2198 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
2199 {
2200 struct bsg_job *bsg_job = sp->u.bsg_job;
2201 struct fc_bsg_request *bsg_request = bsg_job->request;
2202
2203 els_iocb->entry_type = ELS_IOCB_TYPE;
2204 els_iocb->entry_count = 1;
2205 els_iocb->sys_define = 0;
2206 els_iocb->entry_status = 0;
2207 els_iocb->handle = sp->handle;
2208 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2209 els_iocb->tx_dsd_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
2210 els_iocb->vp_index = sp->fcport->vha->vp_idx;
2211 els_iocb->sof_type = EST_SOFI3;
2212 els_iocb->rx_dsd_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2213
2214 els_iocb->opcode =
2215 sp->type == SRB_ELS_CMD_RPT ?
2216 bsg_request->rqst_data.r_els.els_code :
2217 bsg_request->rqst_data.h_els.command_code;
2218 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2219 els_iocb->port_id[1] = sp->fcport->d_id.b.area;
2220 els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2221 els_iocb->control_flags = 0;
2222 els_iocb->rx_byte_count =
2223 cpu_to_le32(bsg_job->reply_payload.payload_len);
2224 els_iocb->tx_byte_count =
2225 cpu_to_le32(bsg_job->request_payload.payload_len);
2226
2227 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address
2228 (bsg_job->request_payload.sg_list)));
2229 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address
2230 (bsg_job->request_payload.sg_list)));
2231 els_iocb->tx_len = cpu_to_le32(sg_dma_len
2232 (bsg_job->request_payload.sg_list));
2233
2234 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address
2235 (bsg_job->reply_payload.sg_list)));
2236 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address
2237 (bsg_job->reply_payload.sg_list)));
2238 els_iocb->rx_len = cpu_to_le32(sg_dma_len
2239 (bsg_job->reply_payload.sg_list));
2240
2241 sp->fcport->vha->qla_stats.control_requests++;
2242 }
2243
2244 static void
2245 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb)
2246 {
2247 uint16_t avail_dsds;
2248 uint32_t *cur_dsd;
2249 struct scatterlist *sg;
2250 int index;
2251 uint16_t tot_dsds;
2252 scsi_qla_host_t *vha = sp->fcport->vha;
2253 struct qla_hw_data *ha = vha->hw;
2254 struct bsg_job *bsg_job = sp->u.bsg_job;
2255 int loop_iterartion = 0;
2256 int entry_count = 1;
2257
2258 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t));
2259 ct_iocb->entry_type = CT_IOCB_TYPE;
2260 ct_iocb->entry_status = 0;
2261 ct_iocb->handle1 = sp->handle;
2262 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id);
2263 ct_iocb->status = cpu_to_le16(0);
2264 ct_iocb->control_flags = cpu_to_le16(0);
2265 ct_iocb->timeout = 0;
2266 ct_iocb->cmd_dsd_count =
2267 cpu_to_le16(bsg_job->request_payload.sg_cnt);
2268 ct_iocb->total_dsd_count =
2269 cpu_to_le16(bsg_job->request_payload.sg_cnt + 1);
2270 ct_iocb->req_bytecount =
2271 cpu_to_le32(bsg_job->request_payload.payload_len);
2272 ct_iocb->rsp_bytecount =
2273 cpu_to_le32(bsg_job->reply_payload.payload_len);
2274
2275 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address
2276 (bsg_job->request_payload.sg_list)));
2277 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address
2278 (bsg_job->request_payload.sg_list)));
2279 ct_iocb->dseg_req_length = ct_iocb->req_bytecount;
2280
2281 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address
2282 (bsg_job->reply_payload.sg_list)));
2283 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address
2284 (bsg_job->reply_payload.sg_list)));
2285 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount;
2286
2287 avail_dsds = 1;
2288 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address;
2289 index = 0;
2290 tot_dsds = bsg_job->reply_payload.sg_cnt;
2291
2292 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
2293 dma_addr_t sle_dma;
2294 cont_a64_entry_t *cont_pkt;
2295
2296 /* Allocate additional continuation packets? */
2297 if (avail_dsds == 0) {
2298 /*
2299 * Five DSDs are available in the Cont.
2300 * Type 1 IOCB.
2301 */
2302 cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
2303 vha->hw->req_q_map[0]);
2304 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2305 avail_dsds = 5;
2306 entry_count++;
2307 }
2308
2309 sle_dma = sg_dma_address(sg);
2310 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2311 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2312 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2313 loop_iterartion++;
2314 avail_dsds--;
2315 }
2316 ct_iocb->entry_count = entry_count;
2317
2318 sp->fcport->vha->qla_stats.control_requests++;
2319 }
2320
2321 static void
2322 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
2323 {
2324 uint16_t avail_dsds;
2325 uint32_t *cur_dsd;
2326 struct scatterlist *sg;
2327 int index;
2328 uint16_t tot_dsds;
2329 scsi_qla_host_t *vha = sp->fcport->vha;
2330 struct qla_hw_data *ha = vha->hw;
2331 struct bsg_job *bsg_job = sp->u.bsg_job;
2332 int loop_iterartion = 0;
2333 int entry_count = 1;
2334
2335 ct_iocb->entry_type = CT_IOCB_TYPE;
2336 ct_iocb->entry_status = 0;
2337 ct_iocb->sys_define = 0;
2338 ct_iocb->handle = sp->handle;
2339
2340 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2341 ct_iocb->vp_index = sp->fcport->vha->vp_idx;
2342 ct_iocb->comp_status = cpu_to_le16(0);
2343
2344 ct_iocb->cmd_dsd_count =
2345 cpu_to_le16(bsg_job->request_payload.sg_cnt);
2346 ct_iocb->timeout = 0;
2347 ct_iocb->rsp_dsd_count =
2348 cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2349 ct_iocb->rsp_byte_count =
2350 cpu_to_le32(bsg_job->reply_payload.payload_len);
2351 ct_iocb->cmd_byte_count =
2352 cpu_to_le32(bsg_job->request_payload.payload_len);
2353 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address
2354 (bsg_job->request_payload.sg_list)));
2355 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address
2356 (bsg_job->request_payload.sg_list)));
2357 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len
2358 (bsg_job->request_payload.sg_list));
2359
2360 avail_dsds = 1;
2361 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address;
2362 index = 0;
2363 tot_dsds = bsg_job->reply_payload.sg_cnt;
2364
2365 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
2366 dma_addr_t sle_dma;
2367 cont_a64_entry_t *cont_pkt;
2368
2369 /* Allocate additional continuation packets? */
2370 if (avail_dsds == 0) {
2371 /*
2372 * Five DSDs are available in the Cont.
2373 * Type 1 IOCB.
2374 */
2375 cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
2376 ha->req_q_map[0]);
2377 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2378 avail_dsds = 5;
2379 entry_count++;
2380 }
2381
2382 sle_dma = sg_dma_address(sg);
2383 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2384 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2385 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2386 loop_iterartion++;
2387 avail_dsds--;
2388 }
2389 ct_iocb->entry_count = entry_count;
2390 }
2391
2392 /*
2393 * qla82xx_start_scsi() - Send a SCSI command to the ISP
2394 * @sp: command to send to the ISP
2395 *
2396 * Returns non-zero if a failure occurred, else zero.
2397 */
2398 int
2399 qla82xx_start_scsi(srb_t *sp)
2400 {
2401 int nseg;
2402 unsigned long flags;
2403 struct scsi_cmnd *cmd;
2404 uint32_t *clr_ptr;
2405 uint32_t index;
2406 uint32_t handle;
2407 uint16_t cnt;
2408 uint16_t req_cnt;
2409 uint16_t tot_dsds;
2410 struct device_reg_82xx __iomem *reg;
2411 uint32_t dbval;
2412 uint32_t *fcp_dl;
2413 uint8_t additional_cdb_len;
2414 struct ct6_dsd *ctx;
2415 struct scsi_qla_host *vha = sp->fcport->vha;
2416 struct qla_hw_data *ha = vha->hw;
2417 struct req_que *req = NULL;
2418 struct rsp_que *rsp = NULL;
2419
2420 /* Setup device pointers. */
2421 reg = &ha->iobase->isp82;
2422 cmd = GET_CMD_SP(sp);
2423 req = vha->req;
2424 rsp = ha->rsp_q_map[0];
2425
2426 /* So we know we haven't pci_map'ed anything yet */
2427 tot_dsds = 0;
2428
2429 dbval = 0x04 | (ha->portnum << 5);
2430
2431 /* Send marker if required */
2432 if (vha->marker_needed != 0) {
2433 if (qla2x00_marker(vha, req,
2434 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) {
2435 ql_log(ql_log_warn, vha, 0x300c,
2436 "qla2x00_marker failed for cmd=%p.\n", cmd);
2437 return QLA_FUNCTION_FAILED;
2438 }
2439 vha->marker_needed = 0;
2440 }
2441
2442 /* Acquire ring specific lock */
2443 spin_lock_irqsave(&ha->hardware_lock, flags);
2444
2445 /* Check for room in outstanding command list. */
2446 handle = req->current_outstanding_cmd;
2447 for (index = 1; index < req->num_outstanding_cmds; index++) {
2448 handle++;
2449 if (handle == req->num_outstanding_cmds)
2450 handle = 1;
2451 if (!req->outstanding_cmds[handle])
2452 break;
2453 }
2454 if (index == req->num_outstanding_cmds)
2455 goto queuing_error;
2456
2457 /* Map the sg table so we have an accurate count of sg entries needed */
2458 if (scsi_sg_count(cmd)) {
2459 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
2460 scsi_sg_count(cmd), cmd->sc_data_direction);
2461 if (unlikely(!nseg))
2462 goto queuing_error;
2463 } else
2464 nseg = 0;
2465
2466 tot_dsds = nseg;
2467
2468 if (tot_dsds > ql2xshiftctondsd) {
2469 struct cmd_type_6 *cmd_pkt;
2470 uint16_t more_dsd_lists = 0;
2471 struct dsd_dma *dsd_ptr;
2472 uint16_t i;
2473
2474 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds);
2475 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) {
2476 ql_dbg(ql_dbg_io, vha, 0x300d,
2477 "Num of DSD list %d is than %d for cmd=%p.\n",
2478 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN,
2479 cmd);
2480 goto queuing_error;
2481 }
2482
2483 if (more_dsd_lists <= ha->gbl_dsd_avail)
2484 goto sufficient_dsds;
2485 else
2486 more_dsd_lists -= ha->gbl_dsd_avail;
2487
2488 for (i = 0; i < more_dsd_lists; i++) {
2489 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
2490 if (!dsd_ptr) {
2491 ql_log(ql_log_fatal, vha, 0x300e,
2492 "Failed to allocate memory for dsd_dma "
2493 "for cmd=%p.\n", cmd);
2494 goto queuing_error;
2495 }
2496
2497 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool,
2498 GFP_ATOMIC, &dsd_ptr->dsd_list_dma);
2499 if (!dsd_ptr->dsd_addr) {
2500 kfree(dsd_ptr);
2501 ql_log(ql_log_fatal, vha, 0x300f,
2502 "Failed to allocate memory for dsd_addr "
2503 "for cmd=%p.\n", cmd);
2504 goto queuing_error;
2505 }
2506 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list);
2507 ha->gbl_dsd_avail++;
2508 }
2509
2510 sufficient_dsds:
2511 req_cnt = 1;
2512
2513 if (req->cnt < (req_cnt + 2)) {
2514 cnt = (uint16_t)RD_REG_DWORD_RELAXED(
2515 &reg->req_q_out[0]);
2516 if (req->ring_index < cnt)
2517 req->cnt = cnt - req->ring_index;
2518 else
2519 req->cnt = req->length -
2520 (req->ring_index - cnt);
2521 if (req->cnt < (req_cnt + 2))
2522 goto queuing_error;
2523 }
2524
2525 ctx = sp->u.scmd.ctx =
2526 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC);
2527 if (!ctx) {
2528 ql_log(ql_log_fatal, vha, 0x3010,
2529 "Failed to allocate ctx for cmd=%p.\n", cmd);
2530 goto queuing_error;
2531 }
2532
2533 memset(ctx, 0, sizeof(struct ct6_dsd));
2534 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool,
2535 GFP_ATOMIC, &ctx->fcp_cmnd_dma);
2536 if (!ctx->fcp_cmnd) {
2537 ql_log(ql_log_fatal, vha, 0x3011,
2538 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd);
2539 goto queuing_error;
2540 }
2541
2542 /* Initialize the DSD list and dma handle */
2543 INIT_LIST_HEAD(&ctx->dsd_list);
2544 ctx->dsd_use_cnt = 0;
2545
2546 if (cmd->cmd_len > 16) {
2547 additional_cdb_len = cmd->cmd_len - 16;
2548 if ((cmd->cmd_len % 4) != 0) {
2549 /* SCSI command bigger than 16 bytes must be
2550 * multiple of 4
2551 */
2552 ql_log(ql_log_warn, vha, 0x3012,
2553 "scsi cmd len %d not multiple of 4 "
2554 "for cmd=%p.\n", cmd->cmd_len, cmd);
2555 goto queuing_error_fcp_cmnd;
2556 }
2557 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4;
2558 } else {
2559 additional_cdb_len = 0;
2560 ctx->fcp_cmnd_len = 12 + 16 + 4;
2561 }
2562
2563 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr;
2564 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2565
2566 /* Zero out remaining portion of packet. */
2567 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
2568 clr_ptr = (uint32_t *)cmd_pkt + 2;
2569 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2570 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
2571
2572 /* Set NPORT-ID and LUN number*/
2573 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2574 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
2575 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
2576 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
2577 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
2578
2579 /* Build IOCB segments */
2580 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds))
2581 goto queuing_error_fcp_cmnd;
2582
2583 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
2584 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
2585
2586 /* build FCP_CMND IU */
2587 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd));
2588 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun);
2589 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len;
2590
2591 if (cmd->sc_data_direction == DMA_TO_DEVICE)
2592 ctx->fcp_cmnd->additional_cdb_len |= 1;
2593 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
2594 ctx->fcp_cmnd->additional_cdb_len |= 2;
2595
2596 /* Populate the FCP_PRIO. */
2597 if (ha->flags.fcp_prio_enabled)
2598 ctx->fcp_cmnd->task_attribute |=
2599 sp->fcport->fcp_prio << 3;
2600
2601 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
2602
2603 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 +
2604 additional_cdb_len);
2605 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd));
2606
2607 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len);
2608 cmd_pkt->fcp_cmnd_dseg_address[0] =
2609 cpu_to_le32(LSD(ctx->fcp_cmnd_dma));
2610 cmd_pkt->fcp_cmnd_dseg_address[1] =
2611 cpu_to_le32(MSD(ctx->fcp_cmnd_dma));
2612
2613 sp->flags |= SRB_FCP_CMND_DMA_VALID;
2614 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
2615 /* Set total data segment count. */
2616 cmd_pkt->entry_count = (uint8_t)req_cnt;
2617 /* Specify response queue number where
2618 * completion should happen
2619 */
2620 cmd_pkt->entry_status = (uint8_t) rsp->id;
2621 } else {
2622 struct cmd_type_7 *cmd_pkt;
2623 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
2624 if (req->cnt < (req_cnt + 2)) {
2625 cnt = (uint16_t)RD_REG_DWORD_RELAXED(
2626 &reg->req_q_out[0]);
2627 if (req->ring_index < cnt)
2628 req->cnt = cnt - req->ring_index;
2629 else
2630 req->cnt = req->length -
2631 (req->ring_index - cnt);
2632 }
2633 if (req->cnt < (req_cnt + 2))
2634 goto queuing_error;
2635
2636 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
2637 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2638
2639 /* Zero out remaining portion of packet. */
2640 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
2641 clr_ptr = (uint32_t *)cmd_pkt + 2;
2642 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2643 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
2644
2645 /* Set NPORT-ID and LUN number*/
2646 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2647 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
2648 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
2649 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
2650 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
2651
2652 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
2653 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun,
2654 sizeof(cmd_pkt->lun));
2655
2656 /* Populate the FCP_PRIO. */
2657 if (ha->flags.fcp_prio_enabled)
2658 cmd_pkt->task |= sp->fcport->fcp_prio << 3;
2659
2660 /* Load SCSI command packet. */
2661 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
2662 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
2663
2664 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
2665
2666 /* Build IOCB segments */
2667 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
2668
2669 /* Set total data segment count. */
2670 cmd_pkt->entry_count = (uint8_t)req_cnt;
2671 /* Specify response queue number where
2672 * completion should happen.
2673 */
2674 cmd_pkt->entry_status = (uint8_t) rsp->id;
2675
2676 }
2677 /* Build command packet. */
2678 req->current_outstanding_cmd = handle;
2679 req->outstanding_cmds[handle] = sp;
2680 sp->handle = handle;
2681 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
2682 req->cnt -= req_cnt;
2683 wmb();
2684
2685 /* Adjust ring index. */
2686 req->ring_index++;
2687 if (req->ring_index == req->length) {
2688 req->ring_index = 0;
2689 req->ring_ptr = req->ring;
2690 } else
2691 req->ring_ptr++;
2692
2693 sp->flags |= SRB_DMA_VALID;
2694
2695 /* Set chip new ring index. */
2696 /* write, read and verify logic */
2697 dbval = dbval | (req->id << 8) | (req->ring_index << 16);
2698 if (ql2xdbwr)
2699 qla82xx_wr_32(ha, (uintptr_t __force)ha->nxdb_wr_ptr, dbval);
2700 else {
2701 WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
2702 wmb();
2703 while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
2704 WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
2705 wmb();
2706 }
2707 }
2708
2709 /* Manage unprocessed RIO/ZIO commands in response queue. */
2710 if (vha->flags.process_response_queue &&
2711 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
2712 qla24xx_process_response_queue(vha, rsp);
2713
2714 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2715 return QLA_SUCCESS;
2716
2717 queuing_error_fcp_cmnd:
2718 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma);
2719 queuing_error:
2720 if (tot_dsds)
2721 scsi_dma_unmap(cmd);
2722
2723 if (sp->u.scmd.ctx) {
2724 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool);
2725 sp->u.scmd.ctx = NULL;
2726 }
2727 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2728
2729 return QLA_FUNCTION_FAILED;
2730 }
2731
2732 static void
2733 qla24xx_abort_iocb(srb_t *sp, struct abort_entry_24xx *abt_iocb)
2734 {
2735 struct srb_iocb *aio = &sp->u.iocb_cmd;
2736 scsi_qla_host_t *vha = sp->fcport->vha;
2737 struct req_que *req = vha->req;
2738
2739 memset(abt_iocb, 0, sizeof(struct abort_entry_24xx));
2740 abt_iocb->entry_type = ABORT_IOCB_TYPE;
2741 abt_iocb->entry_count = 1;
2742 abt_iocb->handle = cpu_to_le32(MAKE_HANDLE(req->id, sp->handle));
2743 abt_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2744 abt_iocb->handle_to_abort =
2745 cpu_to_le32(MAKE_HANDLE(req->id, aio->u.abt.cmd_hndl));
2746 abt_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2747 abt_iocb->port_id[1] = sp->fcport->d_id.b.area;
2748 abt_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2749 abt_iocb->vp_index = vha->vp_idx;
2750 abt_iocb->req_que_no = cpu_to_le16(req->id);
2751 /* Send the command to the firmware */
2752 wmb();
2753 }
2754
2755 int
2756 qla2x00_start_sp(srb_t *sp)
2757 {
2758 int rval;
2759 struct qla_hw_data *ha = sp->fcport->vha->hw;
2760 void *pkt;
2761 unsigned long flags;
2762
2763 rval = QLA_FUNCTION_FAILED;
2764 spin_lock_irqsave(&ha->hardware_lock, flags);
2765 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp);
2766 if (!pkt) {
2767 ql_log(ql_log_warn, sp->fcport->vha, 0x700c,
2768 "qla2x00_alloc_iocbs failed.\n");
2769 goto done;
2770 }
2771
2772 rval = QLA_SUCCESS;
2773 switch (sp->type) {
2774 case SRB_LOGIN_CMD:
2775 IS_FWI2_CAPABLE(ha) ?
2776 qla24xx_login_iocb(sp, pkt) :
2777 qla2x00_login_iocb(sp, pkt);
2778 break;
2779 case SRB_LOGOUT_CMD:
2780 IS_FWI2_CAPABLE(ha) ?
2781 qla24xx_logout_iocb(sp, pkt) :
2782 qla2x00_logout_iocb(sp, pkt);
2783 break;
2784 case SRB_ELS_CMD_RPT:
2785 case SRB_ELS_CMD_HST:
2786 qla24xx_els_iocb(sp, pkt);
2787 break;
2788 case SRB_CT_CMD:
2789 IS_FWI2_CAPABLE(ha) ?
2790 qla24xx_ct_iocb(sp, pkt) :
2791 qla2x00_ct_iocb(sp, pkt);
2792 break;
2793 case SRB_ADISC_CMD:
2794 IS_FWI2_CAPABLE(ha) ?
2795 qla24xx_adisc_iocb(sp, pkt) :
2796 qla2x00_adisc_iocb(sp, pkt);
2797 break;
2798 case SRB_TM_CMD:
2799 IS_QLAFX00(ha) ?
2800 qlafx00_tm_iocb(sp, pkt) :
2801 qla24xx_tm_iocb(sp, pkt);
2802 break;
2803 case SRB_FXIOCB_DCMD:
2804 case SRB_FXIOCB_BCMD:
2805 qlafx00_fxdisc_iocb(sp, pkt);
2806 break;
2807 case SRB_ABT_CMD:
2808 IS_QLAFX00(ha) ?
2809 qlafx00_abort_iocb(sp, pkt) :
2810 qla24xx_abort_iocb(sp, pkt);
2811 break;
2812 case SRB_ELS_DCMD:
2813 qla24xx_els_logo_iocb(sp, pkt);
2814 break;
2815 default:
2816 break;
2817 }
2818
2819 wmb();
2820 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]);
2821 done:
2822 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2823 return rval;
2824 }
2825
2826 static void
2827 qla25xx_build_bidir_iocb(srb_t *sp, struct scsi_qla_host *vha,
2828 struct cmd_bidir *cmd_pkt, uint32_t tot_dsds)
2829 {
2830 uint16_t avail_dsds;
2831 uint32_t *cur_dsd;
2832 uint32_t req_data_len = 0;
2833 uint32_t rsp_data_len = 0;
2834 struct scatterlist *sg;
2835 int index;
2836 int entry_count = 1;
2837 struct bsg_job *bsg_job = sp->u.bsg_job;
2838
2839 /*Update entry type to indicate bidir command */
2840 *((uint32_t *)(&cmd_pkt->entry_type)) =
2841 cpu_to_le32(COMMAND_BIDIRECTIONAL);
2842
2843 /* Set the transfer direction, in this set both flags
2844 * Also set the BD_WRAP_BACK flag, firmware will take care
2845 * assigning DID=SID for outgoing pkts.
2846 */
2847 cmd_pkt->wr_dseg_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
2848 cmd_pkt->rd_dseg_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2849 cmd_pkt->control_flags = cpu_to_le16(BD_WRITE_DATA | BD_READ_DATA |
2850 BD_WRAP_BACK);
2851
2852 req_data_len = rsp_data_len = bsg_job->request_payload.payload_len;
2853 cmd_pkt->wr_byte_count = cpu_to_le32(req_data_len);
2854 cmd_pkt->rd_byte_count = cpu_to_le32(rsp_data_len);
2855 cmd_pkt->timeout = cpu_to_le16(qla2x00_get_async_timeout(vha) + 2);
2856
2857 vha->bidi_stats.transfer_bytes += req_data_len;
2858 vha->bidi_stats.io_count++;
2859
2860 vha->qla_stats.output_bytes += req_data_len;
2861 vha->qla_stats.output_requests++;
2862
2863 /* Only one dsd is available for bidirectional IOCB, remaining dsds
2864 * are bundled in continuation iocb
2865 */
2866 avail_dsds = 1;
2867 cur_dsd = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
2868
2869 index = 0;
2870
2871 for_each_sg(bsg_job->request_payload.sg_list, sg,
2872 bsg_job->request_payload.sg_cnt, index) {
2873 dma_addr_t sle_dma;
2874 cont_a64_entry_t *cont_pkt;
2875
2876 /* Allocate additional continuation packets */
2877 if (avail_dsds == 0) {
2878 /* Continuation type 1 IOCB can accomodate
2879 * 5 DSDS
2880 */
2881 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
2882 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2883 avail_dsds = 5;
2884 entry_count++;
2885 }
2886 sle_dma = sg_dma_address(sg);
2887 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2888 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2889 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2890 avail_dsds--;
2891 }
2892 /* For read request DSD will always goes to continuation IOCB
2893 * and follow the write DSD. If there is room on the current IOCB
2894 * then it is added to that IOCB else new continuation IOCB is
2895 * allocated.
2896 */
2897 for_each_sg(bsg_job->reply_payload.sg_list, sg,
2898 bsg_job->reply_payload.sg_cnt, index) {
2899 dma_addr_t sle_dma;
2900 cont_a64_entry_t *cont_pkt;
2901
2902 /* Allocate additional continuation packets */
2903 if (avail_dsds == 0) {
2904 /* Continuation type 1 IOCB can accomodate
2905 * 5 DSDS
2906 */
2907 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
2908 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2909 avail_dsds = 5;
2910 entry_count++;
2911 }
2912 sle_dma = sg_dma_address(sg);
2913 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2914 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2915 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2916 avail_dsds--;
2917 }
2918 /* This value should be same as number of IOCB required for this cmd */
2919 cmd_pkt->entry_count = entry_count;
2920 }
2921
2922 int
2923 qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds)
2924 {
2925
2926 struct qla_hw_data *ha = vha->hw;
2927 unsigned long flags;
2928 uint32_t handle;
2929 uint32_t index;
2930 uint16_t req_cnt;
2931 uint16_t cnt;
2932 uint32_t *clr_ptr;
2933 struct cmd_bidir *cmd_pkt = NULL;
2934 struct rsp_que *rsp;
2935 struct req_que *req;
2936 int rval = EXT_STATUS_OK;
2937
2938 rval = QLA_SUCCESS;
2939
2940 rsp = ha->rsp_q_map[0];
2941 req = vha->req;
2942
2943 /* Send marker if required */
2944 if (vha->marker_needed != 0) {
2945 if (qla2x00_marker(vha, req,
2946 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS)
2947 return EXT_STATUS_MAILBOX;
2948 vha->marker_needed = 0;
2949 }
2950
2951 /* Acquire ring specific lock */
2952 spin_lock_irqsave(&ha->hardware_lock, flags);
2953
2954 /* Check for room in outstanding command list. */
2955 handle = req->current_outstanding_cmd;
2956 for (index = 1; index < req->num_outstanding_cmds; index++) {
2957 handle++;
2958 if (handle == req->num_outstanding_cmds)
2959 handle = 1;
2960 if (!req->outstanding_cmds[handle])
2961 break;
2962 }
2963
2964 if (index == req->num_outstanding_cmds) {
2965 rval = EXT_STATUS_BUSY;
2966 goto queuing_error;
2967 }
2968
2969 /* Calculate number of IOCB required */
2970 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
2971
2972 /* Check for room on request queue. */
2973 if (req->cnt < req_cnt + 2) {
2974 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
2975 RD_REG_DWORD_RELAXED(req->req_q_out);
2976 if (req->ring_index < cnt)
2977 req->cnt = cnt - req->ring_index;
2978 else
2979 req->cnt = req->length -
2980 (req->ring_index - cnt);
2981 }
2982 if (req->cnt < req_cnt + 2) {
2983 rval = EXT_STATUS_BUSY;
2984 goto queuing_error;
2985 }
2986
2987 cmd_pkt = (struct cmd_bidir *)req->ring_ptr;
2988 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2989
2990 /* Zero out remaining portion of packet. */
2991 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
2992 clr_ptr = (uint32_t *)cmd_pkt + 2;
2993 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2994
2995 /* Set NPORT-ID (of vha)*/
2996 cmd_pkt->nport_handle = cpu_to_le16(vha->self_login_loop_id);
2997 cmd_pkt->port_id[0] = vha->d_id.b.al_pa;
2998 cmd_pkt->port_id[1] = vha->d_id.b.area;
2999 cmd_pkt->port_id[2] = vha->d_id.b.domain;
3000
3001 qla25xx_build_bidir_iocb(sp, vha, cmd_pkt, tot_dsds);
3002 cmd_pkt->entry_status = (uint8_t) rsp->id;
3003 /* Build command packet. */
3004 req->current_outstanding_cmd = handle;
3005 req->outstanding_cmds[handle] = sp;
3006 sp->handle = handle;
3007 req->cnt -= req_cnt;
3008
3009 /* Send the command to the firmware */
3010 wmb();
3011 qla2x00_start_iocbs(vha, req);
3012 queuing_error:
3013 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3014 return rval;
3015 }
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