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[mirror_ubuntu-kernels.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 /**
16 * qla2x00_get_cmd_direction() - Determine control_flag data direction.
17 * @sp: SCSI command
18 *
19 * Returns the proper CF_* direction based on CDB.
20 */
21 static inline uint16_t
22 qla2x00_get_cmd_direction(srb_t *sp)
23 {
24 uint16_t cflags;
25 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
26 struct scsi_qla_host *vha = sp->vha;
27
28 cflags = 0;
29
30 /* Set transfer direction */
31 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
32 cflags = CF_WRITE;
33 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
34 vha->qla_stats.output_requests++;
35 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
36 cflags = CF_READ;
37 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
38 vha->qla_stats.input_requests++;
39 }
40 return (cflags);
41 }
42
43 /**
44 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and
45 * Continuation Type 0 IOCBs to allocate.
46 *
47 * @dsds: number of data segment decriptors needed
48 *
49 * Returns the number of IOCB entries needed to store @dsds.
50 */
51 uint16_t
52 qla2x00_calc_iocbs_32(uint16_t dsds)
53 {
54 uint16_t iocbs;
55
56 iocbs = 1;
57 if (dsds > 3) {
58 iocbs += (dsds - 3) / 7;
59 if ((dsds - 3) % 7)
60 iocbs++;
61 }
62 return (iocbs);
63 }
64
65 /**
66 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and
67 * Continuation Type 1 IOCBs to allocate.
68 *
69 * @dsds: number of data segment decriptors needed
70 *
71 * Returns the number of IOCB entries needed to store @dsds.
72 */
73 uint16_t
74 qla2x00_calc_iocbs_64(uint16_t dsds)
75 {
76 uint16_t iocbs;
77
78 iocbs = 1;
79 if (dsds > 2) {
80 iocbs += (dsds - 2) / 5;
81 if ((dsds - 2) % 5)
82 iocbs++;
83 }
84 return (iocbs);
85 }
86
87 /**
88 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB.
89 * @vha: HA context
90 *
91 * Returns a pointer to the Continuation Type 0 IOCB packet.
92 */
93 static inline cont_entry_t *
94 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha)
95 {
96 cont_entry_t *cont_pkt;
97 struct req_que *req = vha->req;
98 /* Adjust ring index. */
99 req->ring_index++;
100 if (req->ring_index == req->length) {
101 req->ring_index = 0;
102 req->ring_ptr = req->ring;
103 } else {
104 req->ring_ptr++;
105 }
106
107 cont_pkt = (cont_entry_t *)req->ring_ptr;
108
109 /* Load packet defaults. */
110 *((uint32_t *)(&cont_pkt->entry_type)) = cpu_to_le32(CONTINUE_TYPE);
111
112 return (cont_pkt);
113 }
114
115 /**
116 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB.
117 * @vha: HA context
118 * @req: request queue
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 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->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->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->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, ha->base_qpair, 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 * @vha: HA context
450 * @req: request queue
451 */
452 void
453 qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req)
454 {
455 struct qla_hw_data *ha = vha->hw;
456 device_reg_t *reg = ISP_QUE_REG(ha, req->id);
457
458 if (IS_P3P_TYPE(ha)) {
459 qla82xx_start_iocbs(vha);
460 } else {
461 /* Adjust ring index. */
462 req->ring_index++;
463 if (req->ring_index == req->length) {
464 req->ring_index = 0;
465 req->ring_ptr = req->ring;
466 } else
467 req->ring_ptr++;
468
469 /* Set chip new ring index. */
470 if (ha->mqenable || IS_QLA27XX(ha)) {
471 WRT_REG_DWORD(req->req_q_in, req->ring_index);
472 } else if (IS_QLA83XX(ha)) {
473 WRT_REG_DWORD(req->req_q_in, req->ring_index);
474 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
475 } else if (IS_QLAFX00(ha)) {
476 WRT_REG_DWORD(&reg->ispfx00.req_q_in, req->ring_index);
477 RD_REG_DWORD_RELAXED(&reg->ispfx00.req_q_in);
478 QLAFX00_SET_HST_INTR(ha, ha->rqstq_intr_code);
479 } else if (IS_FWI2_CAPABLE(ha)) {
480 WRT_REG_DWORD(&reg->isp24.req_q_in, req->ring_index);
481 RD_REG_DWORD_RELAXED(&reg->isp24.req_q_in);
482 } else {
483 WRT_REG_WORD(ISP_REQ_Q_IN(ha, &reg->isp),
484 req->ring_index);
485 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, &reg->isp));
486 }
487 }
488 }
489
490 /**
491 * qla2x00_marker() - Send a marker IOCB to the firmware.
492 * @vha: HA context
493 * @qpair: queue pair pointer
494 * @loop_id: loop ID
495 * @lun: LUN
496 * @type: marker modifier
497 *
498 * Can be called from both normal and interrupt context.
499 *
500 * Returns non-zero if a failure occurred, else zero.
501 */
502 static int
503 __qla2x00_marker(struct scsi_qla_host *vha, struct qla_qpair *qpair,
504 uint16_t loop_id, uint64_t lun, uint8_t type)
505 {
506 mrk_entry_t *mrk;
507 struct mrk_entry_24xx *mrk24 = NULL;
508 struct req_que *req = qpair->req;
509 struct qla_hw_data *ha = vha->hw;
510 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
511
512 mrk = (mrk_entry_t *)__qla2x00_alloc_iocbs(qpair, NULL);
513 if (mrk == NULL) {
514 ql_log(ql_log_warn, base_vha, 0x3026,
515 "Failed to allocate Marker IOCB.\n");
516
517 return (QLA_FUNCTION_FAILED);
518 }
519
520 mrk->entry_type = MARKER_TYPE;
521 mrk->modifier = type;
522 if (type != MK_SYNC_ALL) {
523 if (IS_FWI2_CAPABLE(ha)) {
524 mrk24 = (struct mrk_entry_24xx *) mrk;
525 mrk24->nport_handle = cpu_to_le16(loop_id);
526 int_to_scsilun(lun, (struct scsi_lun *)&mrk24->lun);
527 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
528 mrk24->vp_index = vha->vp_idx;
529 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle);
530 } else {
531 SET_TARGET_ID(ha, mrk->target, loop_id);
532 mrk->lun = cpu_to_le16((uint16_t)lun);
533 }
534 }
535 wmb();
536
537 qla2x00_start_iocbs(vha, req);
538
539 return (QLA_SUCCESS);
540 }
541
542 int
543 qla2x00_marker(struct scsi_qla_host *vha, struct qla_qpair *qpair,
544 uint16_t loop_id, uint64_t lun, uint8_t type)
545 {
546 int ret;
547 unsigned long flags = 0;
548
549 spin_lock_irqsave(qpair->qp_lock_ptr, flags);
550 ret = __qla2x00_marker(vha, qpair, loop_id, lun, type);
551 spin_unlock_irqrestore(qpair->qp_lock_ptr, flags);
552
553 return (ret);
554 }
555
556 /*
557 * qla2x00_issue_marker
558 *
559 * Issue marker
560 * Caller CAN have hardware lock held as specified by ha_locked parameter.
561 * Might release it, then reaquire.
562 */
563 int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
564 {
565 if (ha_locked) {
566 if (__qla2x00_marker(vha, vha->hw->base_qpair, 0, 0,
567 MK_SYNC_ALL) != QLA_SUCCESS)
568 return QLA_FUNCTION_FAILED;
569 } else {
570 if (qla2x00_marker(vha, vha->hw->base_qpair, 0, 0,
571 MK_SYNC_ALL) != QLA_SUCCESS)
572 return QLA_FUNCTION_FAILED;
573 }
574 vha->marker_needed = 0;
575
576 return QLA_SUCCESS;
577 }
578
579 static inline int
580 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
581 uint16_t tot_dsds)
582 {
583 uint32_t *cur_dsd = NULL;
584 scsi_qla_host_t *vha;
585 struct qla_hw_data *ha;
586 struct scsi_cmnd *cmd;
587 struct scatterlist *cur_seg;
588 uint32_t *dsd_seg;
589 void *next_dsd;
590 uint8_t avail_dsds;
591 uint8_t first_iocb = 1;
592 uint32_t dsd_list_len;
593 struct dsd_dma *dsd_ptr;
594 struct ct6_dsd *ctx;
595
596 cmd = GET_CMD_SP(sp);
597
598 /* Update entry type to indicate Command Type 3 IOCB */
599 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_6);
600
601 /* No data transfer */
602 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
603 cmd_pkt->byte_count = cpu_to_le32(0);
604 return 0;
605 }
606
607 vha = sp->vha;
608 ha = vha->hw;
609
610 /* Set transfer direction */
611 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
612 cmd_pkt->control_flags = cpu_to_le16(CF_WRITE_DATA);
613 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
614 vha->qla_stats.output_requests++;
615 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
616 cmd_pkt->control_flags = cpu_to_le16(CF_READ_DATA);
617 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
618 vha->qla_stats.input_requests++;
619 }
620
621 cur_seg = scsi_sglist(cmd);
622 ctx = GET_CMD_CTX_SP(sp);
623
624 while (tot_dsds) {
625 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ?
626 QLA_DSDS_PER_IOCB : tot_dsds;
627 tot_dsds -= avail_dsds;
628 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE;
629
630 dsd_ptr = list_first_entry(&ha->gbl_dsd_list,
631 struct dsd_dma, list);
632 next_dsd = dsd_ptr->dsd_addr;
633 list_del(&dsd_ptr->list);
634 ha->gbl_dsd_avail--;
635 list_add_tail(&dsd_ptr->list, &ctx->dsd_list);
636 ctx->dsd_use_cnt++;
637 ha->gbl_dsd_inuse++;
638
639 if (first_iocb) {
640 first_iocb = 0;
641 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
642 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
643 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
644 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len);
645 } else {
646 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
647 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
648 *cur_dsd++ = cpu_to_le32(dsd_list_len);
649 }
650 cur_dsd = (uint32_t *)next_dsd;
651 while (avail_dsds) {
652 dma_addr_t sle_dma;
653
654 sle_dma = sg_dma_address(cur_seg);
655 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
656 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
657 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg));
658 cur_seg = sg_next(cur_seg);
659 avail_dsds--;
660 }
661 }
662
663 /* Null termination */
664 *cur_dsd++ = 0;
665 *cur_dsd++ = 0;
666 *cur_dsd++ = 0;
667 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE;
668 return 0;
669 }
670
671 /*
672 * qla24xx_calc_dsd_lists() - Determine number of DSD list required
673 * for Command Type 6.
674 *
675 * @dsds: number of data segment decriptors needed
676 *
677 * Returns the number of dsd list needed to store @dsds.
678 */
679 static inline uint16_t
680 qla24xx_calc_dsd_lists(uint16_t dsds)
681 {
682 uint16_t dsd_lists = 0;
683
684 dsd_lists = (dsds/QLA_DSDS_PER_IOCB);
685 if (dsds % QLA_DSDS_PER_IOCB)
686 dsd_lists++;
687 return dsd_lists;
688 }
689
690
691 /**
692 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
693 * IOCB types.
694 *
695 * @sp: SRB command to process
696 * @cmd_pkt: Command type 3 IOCB
697 * @tot_dsds: Total number of segments to transfer
698 * @req: pointer to request queue
699 */
700 inline void
701 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
702 uint16_t tot_dsds, struct req_que *req)
703 {
704 uint16_t avail_dsds;
705 uint32_t *cur_dsd;
706 scsi_qla_host_t *vha;
707 struct scsi_cmnd *cmd;
708 struct scatterlist *sg;
709 int i;
710
711 cmd = GET_CMD_SP(sp);
712
713 /* Update entry type to indicate Command Type 3 IOCB */
714 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_7);
715
716 /* No data transfer */
717 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
718 cmd_pkt->byte_count = cpu_to_le32(0);
719 return;
720 }
721
722 vha = sp->vha;
723
724 /* Set transfer direction */
725 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
726 cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_WRITE_DATA);
727 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
728 vha->qla_stats.output_requests++;
729 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
730 cmd_pkt->task_mgmt_flags = cpu_to_le16(TMF_READ_DATA);
731 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
732 vha->qla_stats.input_requests++;
733 }
734
735 /* One DSD is available in the Command Type 3 IOCB */
736 avail_dsds = 1;
737 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
738
739 /* Load data segments */
740
741 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
742 dma_addr_t sle_dma;
743 cont_a64_entry_t *cont_pkt;
744
745 /* Allocate additional continuation packets? */
746 if (avail_dsds == 0) {
747 /*
748 * Five DSDs are available in the Continuation
749 * Type 1 IOCB.
750 */
751 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, req);
752 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
753 avail_dsds = 5;
754 }
755
756 sle_dma = sg_dma_address(sg);
757 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
758 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
759 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
760 avail_dsds--;
761 }
762 }
763
764 struct fw_dif_context {
765 uint32_t ref_tag;
766 uint16_t app_tag;
767 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/
768 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/
769 };
770
771 /*
772 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
773 *
774 */
775 static inline void
776 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt,
777 unsigned int protcnt)
778 {
779 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
780
781 switch (scsi_get_prot_type(cmd)) {
782 case SCSI_PROT_DIF_TYPE0:
783 /*
784 * No check for ql2xenablehba_err_chk, as it would be an
785 * I/O error if hba tag generation is not done.
786 */
787 pkt->ref_tag = cpu_to_le32((uint32_t)
788 (0xffffffff & scsi_get_lba(cmd)));
789
790 if (!qla2x00_hba_err_chk_enabled(sp))
791 break;
792
793 pkt->ref_tag_mask[0] = 0xff;
794 pkt->ref_tag_mask[1] = 0xff;
795 pkt->ref_tag_mask[2] = 0xff;
796 pkt->ref_tag_mask[3] = 0xff;
797 break;
798
799 /*
800 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
801 * match LBA in CDB + N
802 */
803 case SCSI_PROT_DIF_TYPE2:
804 pkt->app_tag = cpu_to_le16(0);
805 pkt->app_tag_mask[0] = 0x0;
806 pkt->app_tag_mask[1] = 0x0;
807
808 pkt->ref_tag = cpu_to_le32((uint32_t)
809 (0xffffffff & scsi_get_lba(cmd)));
810
811 if (!qla2x00_hba_err_chk_enabled(sp))
812 break;
813
814 /* enable ALL bytes of the ref tag */
815 pkt->ref_tag_mask[0] = 0xff;
816 pkt->ref_tag_mask[1] = 0xff;
817 pkt->ref_tag_mask[2] = 0xff;
818 pkt->ref_tag_mask[3] = 0xff;
819 break;
820
821 /* For Type 3 protection: 16 bit GUARD only */
822 case SCSI_PROT_DIF_TYPE3:
823 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] =
824 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] =
825 0x00;
826 break;
827
828 /*
829 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
830 * 16 bit app tag.
831 */
832 case SCSI_PROT_DIF_TYPE1:
833 pkt->ref_tag = cpu_to_le32((uint32_t)
834 (0xffffffff & scsi_get_lba(cmd)));
835 pkt->app_tag = cpu_to_le16(0);
836 pkt->app_tag_mask[0] = 0x0;
837 pkt->app_tag_mask[1] = 0x0;
838
839 if (!qla2x00_hba_err_chk_enabled(sp))
840 break;
841
842 /* enable ALL bytes of the ref tag */
843 pkt->ref_tag_mask[0] = 0xff;
844 pkt->ref_tag_mask[1] = 0xff;
845 pkt->ref_tag_mask[2] = 0xff;
846 pkt->ref_tag_mask[3] = 0xff;
847 break;
848 }
849 }
850
851 int
852 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx,
853 uint32_t *partial)
854 {
855 struct scatterlist *sg;
856 uint32_t cumulative_partial, sg_len;
857 dma_addr_t sg_dma_addr;
858
859 if (sgx->num_bytes == sgx->tot_bytes)
860 return 0;
861
862 sg = sgx->cur_sg;
863 cumulative_partial = sgx->tot_partial;
864
865 sg_dma_addr = sg_dma_address(sg);
866 sg_len = sg_dma_len(sg);
867
868 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed;
869
870 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) {
871 sgx->dma_len = (blk_sz - cumulative_partial);
872 sgx->tot_partial = 0;
873 sgx->num_bytes += blk_sz;
874 *partial = 0;
875 } else {
876 sgx->dma_len = sg_len - sgx->bytes_consumed;
877 sgx->tot_partial += sgx->dma_len;
878 *partial = 1;
879 }
880
881 sgx->bytes_consumed += sgx->dma_len;
882
883 if (sg_len == sgx->bytes_consumed) {
884 sg = sg_next(sg);
885 sgx->num_sg++;
886 sgx->cur_sg = sg;
887 sgx->bytes_consumed = 0;
888 }
889
890 return 1;
891 }
892
893 int
894 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp,
895 uint32_t *dsd, uint16_t tot_dsds, struct qla_tc_param *tc)
896 {
897 void *next_dsd;
898 uint8_t avail_dsds = 0;
899 uint32_t dsd_list_len;
900 struct dsd_dma *dsd_ptr;
901 struct scatterlist *sg_prot;
902 uint32_t *cur_dsd = dsd;
903 uint16_t used_dsds = tot_dsds;
904 uint32_t prot_int; /* protection interval */
905 uint32_t partial;
906 struct qla2_sgx sgx;
907 dma_addr_t sle_dma;
908 uint32_t sle_dma_len, tot_prot_dma_len = 0;
909 struct scsi_cmnd *cmd;
910
911 memset(&sgx, 0, sizeof(struct qla2_sgx));
912 if (sp) {
913 cmd = GET_CMD_SP(sp);
914 prot_int = cmd->device->sector_size;
915
916 sgx.tot_bytes = scsi_bufflen(cmd);
917 sgx.cur_sg = scsi_sglist(cmd);
918 sgx.sp = sp;
919
920 sg_prot = scsi_prot_sglist(cmd);
921 } else if (tc) {
922 prot_int = tc->blk_sz;
923 sgx.tot_bytes = tc->bufflen;
924 sgx.cur_sg = tc->sg;
925 sg_prot = tc->prot_sg;
926 } else {
927 BUG();
928 return 1;
929 }
930
931 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) {
932
933 sle_dma = sgx.dma_addr;
934 sle_dma_len = sgx.dma_len;
935 alloc_and_fill:
936 /* Allocate additional continuation packets? */
937 if (avail_dsds == 0) {
938 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
939 QLA_DSDS_PER_IOCB : used_dsds;
940 dsd_list_len = (avail_dsds + 1) * 12;
941 used_dsds -= avail_dsds;
942
943 /* allocate tracking DS */
944 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
945 if (!dsd_ptr)
946 return 1;
947
948 /* allocate new list */
949 dsd_ptr->dsd_addr = next_dsd =
950 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
951 &dsd_ptr->dsd_list_dma);
952
953 if (!next_dsd) {
954 /*
955 * Need to cleanup only this dsd_ptr, rest
956 * will be done by sp_free_dma()
957 */
958 kfree(dsd_ptr);
959 return 1;
960 }
961
962 if (sp) {
963 list_add_tail(&dsd_ptr->list,
964 &((struct crc_context *)
965 sp->u.scmd.ctx)->dsd_list);
966
967 sp->flags |= SRB_CRC_CTX_DSD_VALID;
968 } else {
969 list_add_tail(&dsd_ptr->list,
970 &(tc->ctx->dsd_list));
971 *tc->ctx_dsd_alloced = 1;
972 }
973
974
975 /* add new list to cmd iocb or last list */
976 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
977 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
978 *cur_dsd++ = dsd_list_len;
979 cur_dsd = (uint32_t *)next_dsd;
980 }
981 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
982 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
983 *cur_dsd++ = cpu_to_le32(sle_dma_len);
984 avail_dsds--;
985
986 if (partial == 0) {
987 /* Got a full protection interval */
988 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len;
989 sle_dma_len = 8;
990
991 tot_prot_dma_len += sle_dma_len;
992 if (tot_prot_dma_len == sg_dma_len(sg_prot)) {
993 tot_prot_dma_len = 0;
994 sg_prot = sg_next(sg_prot);
995 }
996
997 partial = 1; /* So as to not re-enter this block */
998 goto alloc_and_fill;
999 }
1000 }
1001 /* Null termination */
1002 *cur_dsd++ = 0;
1003 *cur_dsd++ = 0;
1004 *cur_dsd++ = 0;
1005 return 0;
1006 }
1007
1008 int
1009 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
1010 uint16_t tot_dsds, struct qla_tc_param *tc)
1011 {
1012 void *next_dsd;
1013 uint8_t avail_dsds = 0;
1014 uint32_t dsd_list_len;
1015 struct dsd_dma *dsd_ptr;
1016 struct scatterlist *sg, *sgl;
1017 uint32_t *cur_dsd = dsd;
1018 int i;
1019 uint16_t used_dsds = tot_dsds;
1020 struct scsi_cmnd *cmd;
1021
1022 if (sp) {
1023 cmd = GET_CMD_SP(sp);
1024 sgl = scsi_sglist(cmd);
1025 } else if (tc) {
1026 sgl = tc->sg;
1027 } else {
1028 BUG();
1029 return 1;
1030 }
1031
1032
1033 for_each_sg(sgl, sg, tot_dsds, i) {
1034 dma_addr_t sle_dma;
1035
1036 /* Allocate additional continuation packets? */
1037 if (avail_dsds == 0) {
1038 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1039 QLA_DSDS_PER_IOCB : used_dsds;
1040 dsd_list_len = (avail_dsds + 1) * 12;
1041 used_dsds -= avail_dsds;
1042
1043 /* allocate tracking DS */
1044 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
1045 if (!dsd_ptr)
1046 return 1;
1047
1048 /* allocate new list */
1049 dsd_ptr->dsd_addr = next_dsd =
1050 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1051 &dsd_ptr->dsd_list_dma);
1052
1053 if (!next_dsd) {
1054 /*
1055 * Need to cleanup only this dsd_ptr, rest
1056 * will be done by sp_free_dma()
1057 */
1058 kfree(dsd_ptr);
1059 return 1;
1060 }
1061
1062 if (sp) {
1063 list_add_tail(&dsd_ptr->list,
1064 &((struct crc_context *)
1065 sp->u.scmd.ctx)->dsd_list);
1066
1067 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1068 } else {
1069 list_add_tail(&dsd_ptr->list,
1070 &(tc->ctx->dsd_list));
1071 *tc->ctx_dsd_alloced = 1;
1072 }
1073
1074 /* add new list to cmd iocb or last list */
1075 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1076 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1077 *cur_dsd++ = dsd_list_len;
1078 cur_dsd = (uint32_t *)next_dsd;
1079 }
1080 sle_dma = sg_dma_address(sg);
1081
1082 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1083 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1084 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1085 avail_dsds--;
1086
1087 }
1088 /* Null termination */
1089 *cur_dsd++ = 0;
1090 *cur_dsd++ = 0;
1091 *cur_dsd++ = 0;
1092 return 0;
1093 }
1094
1095 int
1096 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
1097 uint32_t *cur_dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
1098 {
1099 struct dsd_dma *dsd_ptr = NULL, *dif_dsd, *nxt_dsd;
1100 struct scatterlist *sg, *sgl;
1101 struct crc_context *difctx = NULL;
1102 struct scsi_qla_host *vha;
1103 uint dsd_list_len;
1104 uint avail_dsds = 0;
1105 uint used_dsds = tot_dsds;
1106 bool dif_local_dma_alloc = false;
1107 bool direction_to_device = false;
1108 int i;
1109
1110 if (sp) {
1111 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1112 sgl = scsi_prot_sglist(cmd);
1113 vha = sp->vha;
1114 difctx = sp->u.scmd.ctx;
1115 direction_to_device = cmd->sc_data_direction == DMA_TO_DEVICE;
1116 ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe021,
1117 "%s: scsi_cmnd: %p, crc_ctx: %p, sp: %p\n",
1118 __func__, cmd, difctx, sp);
1119 } else if (tc) {
1120 vha = tc->vha;
1121 sgl = tc->prot_sg;
1122 difctx = tc->ctx;
1123 direction_to_device = tc->dma_data_direction == DMA_TO_DEVICE;
1124 } else {
1125 BUG();
1126 return 1;
1127 }
1128
1129 ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe021,
1130 "%s: enter (write=%u)\n", __func__, direction_to_device);
1131
1132 /* if initiator doing write or target doing read */
1133 if (direction_to_device) {
1134 for_each_sg(sgl, sg, tot_dsds, i) {
1135 u64 sle_phys = sg_phys(sg);
1136
1137 /* If SGE addr + len flips bits in upper 32-bits */
1138 if (MSD(sle_phys + sg->length) ^ MSD(sle_phys)) {
1139 ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe022,
1140 "%s: page boundary crossing (phys=%llx len=%x)\n",
1141 __func__, sle_phys, sg->length);
1142
1143 if (difctx) {
1144 ha->dif_bundle_crossed_pages++;
1145 dif_local_dma_alloc = true;
1146 } else {
1147 ql_dbg(ql_dbg_tgt + ql_dbg_verbose,
1148 vha, 0xe022,
1149 "%s: difctx pointer is NULL\n",
1150 __func__);
1151 }
1152 break;
1153 }
1154 }
1155 ha->dif_bundle_writes++;
1156 } else {
1157 ha->dif_bundle_reads++;
1158 }
1159
1160 if (ql2xdifbundlinginternalbuffers)
1161 dif_local_dma_alloc = direction_to_device;
1162
1163 if (dif_local_dma_alloc) {
1164 u32 track_difbundl_buf = 0;
1165 u32 ldma_sg_len = 0;
1166 u8 ldma_needed = 1;
1167
1168 difctx->no_dif_bundl = 0;
1169 difctx->dif_bundl_len = 0;
1170
1171 /* Track DSD buffers */
1172 INIT_LIST_HEAD(&difctx->ldif_dsd_list);
1173 /* Track local DMA buffers */
1174 INIT_LIST_HEAD(&difctx->ldif_dma_hndl_list);
1175
1176 for_each_sg(sgl, sg, tot_dsds, i) {
1177 u32 sglen = sg_dma_len(sg);
1178
1179 ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe023,
1180 "%s: sg[%x] (phys=%llx sglen=%x) ldma_sg_len: %x dif_bundl_len: %x ldma_needed: %x\n",
1181 __func__, i, (u64)sg_phys(sg), sglen, ldma_sg_len,
1182 difctx->dif_bundl_len, ldma_needed);
1183
1184 while (sglen) {
1185 u32 xfrlen = 0;
1186
1187 if (ldma_needed) {
1188 /*
1189 * Allocate list item to store
1190 * the DMA buffers
1191 */
1192 dsd_ptr = kzalloc(sizeof(*dsd_ptr),
1193 GFP_ATOMIC);
1194 if (!dsd_ptr) {
1195 ql_dbg(ql_dbg_tgt, vha, 0xe024,
1196 "%s: failed alloc dsd_ptr\n",
1197 __func__);
1198 return 1;
1199 }
1200 ha->dif_bundle_kallocs++;
1201
1202 /* allocate dma buffer */
1203 dsd_ptr->dsd_addr = dma_pool_alloc
1204 (ha->dif_bundl_pool, GFP_ATOMIC,
1205 &dsd_ptr->dsd_list_dma);
1206 if (!dsd_ptr->dsd_addr) {
1207 ql_dbg(ql_dbg_tgt, vha, 0xe024,
1208 "%s: failed alloc ->dsd_ptr\n",
1209 __func__);
1210 /*
1211 * need to cleanup only this
1212 * dsd_ptr rest will be done
1213 * by sp_free_dma()
1214 */
1215 kfree(dsd_ptr);
1216 ha->dif_bundle_kallocs--;
1217 return 1;
1218 }
1219 ha->dif_bundle_dma_allocs++;
1220 ldma_needed = 0;
1221 difctx->no_dif_bundl++;
1222 list_add_tail(&dsd_ptr->list,
1223 &difctx->ldif_dma_hndl_list);
1224 }
1225
1226 /* xfrlen is min of dma pool size and sglen */
1227 xfrlen = (sglen >
1228 (DIF_BUNDLING_DMA_POOL_SIZE - ldma_sg_len)) ?
1229 DIF_BUNDLING_DMA_POOL_SIZE - ldma_sg_len :
1230 sglen;
1231
1232 /* replace with local allocated dma buffer */
1233 sg_pcopy_to_buffer(sgl, sg_nents(sgl),
1234 dsd_ptr->dsd_addr + ldma_sg_len, xfrlen,
1235 difctx->dif_bundl_len);
1236 difctx->dif_bundl_len += xfrlen;
1237 sglen -= xfrlen;
1238 ldma_sg_len += xfrlen;
1239 if (ldma_sg_len == DIF_BUNDLING_DMA_POOL_SIZE ||
1240 sg_is_last(sg)) {
1241 ldma_needed = 1;
1242 ldma_sg_len = 0;
1243 }
1244 }
1245 }
1246
1247 track_difbundl_buf = used_dsds = difctx->no_dif_bundl;
1248 ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe025,
1249 "dif_bundl_len=%x, no_dif_bundl=%x track_difbundl_buf: %x\n",
1250 difctx->dif_bundl_len, difctx->no_dif_bundl,
1251 track_difbundl_buf);
1252
1253 if (sp)
1254 sp->flags |= SRB_DIF_BUNDL_DMA_VALID;
1255 else
1256 tc->prot_flags = DIF_BUNDL_DMA_VALID;
1257
1258 list_for_each_entry_safe(dif_dsd, nxt_dsd,
1259 &difctx->ldif_dma_hndl_list, list) {
1260 u32 sglen = (difctx->dif_bundl_len >
1261 DIF_BUNDLING_DMA_POOL_SIZE) ?
1262 DIF_BUNDLING_DMA_POOL_SIZE : difctx->dif_bundl_len;
1263
1264 BUG_ON(track_difbundl_buf == 0);
1265
1266 /* Allocate additional continuation packets? */
1267 if (avail_dsds == 0) {
1268 ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha,
1269 0xe024,
1270 "%s: adding continuation iocb's\n",
1271 __func__);
1272 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1273 QLA_DSDS_PER_IOCB : used_dsds;
1274 dsd_list_len = (avail_dsds + 1) * 12;
1275 used_dsds -= avail_dsds;
1276
1277 /* allocate tracking DS */
1278 dsd_ptr = kzalloc(sizeof(*dsd_ptr), GFP_ATOMIC);
1279 if (!dsd_ptr) {
1280 ql_dbg(ql_dbg_tgt, vha, 0xe026,
1281 "%s: failed alloc dsd_ptr\n",
1282 __func__);
1283 return 1;
1284 }
1285 ha->dif_bundle_kallocs++;
1286
1287 difctx->no_ldif_dsd++;
1288 /* allocate new list */
1289 dsd_ptr->dsd_addr =
1290 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1291 &dsd_ptr->dsd_list_dma);
1292 if (!dsd_ptr->dsd_addr) {
1293 ql_dbg(ql_dbg_tgt, vha, 0xe026,
1294 "%s: failed alloc ->dsd_addr\n",
1295 __func__);
1296 /*
1297 * need to cleanup only this dsd_ptr
1298 * rest will be done by sp_free_dma()
1299 */
1300 kfree(dsd_ptr);
1301 ha->dif_bundle_kallocs--;
1302 return 1;
1303 }
1304 ha->dif_bundle_dma_allocs++;
1305
1306 if (sp) {
1307 list_add_tail(&dsd_ptr->list,
1308 &difctx->ldif_dsd_list);
1309 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1310 } else {
1311 list_add_tail(&dsd_ptr->list,
1312 &difctx->ldif_dsd_list);
1313 tc->ctx_dsd_alloced = 1;
1314 }
1315
1316 /* add new list to cmd iocb or last list */
1317 *cur_dsd++ =
1318 cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1319 *cur_dsd++ =
1320 cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1321 *cur_dsd++ = dsd_list_len;
1322 cur_dsd = dsd_ptr->dsd_addr;
1323 }
1324 *cur_dsd++ = cpu_to_le32(LSD(dif_dsd->dsd_list_dma));
1325 *cur_dsd++ = cpu_to_le32(MSD(dif_dsd->dsd_list_dma));
1326 *cur_dsd++ = cpu_to_le32(sglen);
1327 avail_dsds--;
1328 difctx->dif_bundl_len -= sglen;
1329 track_difbundl_buf--;
1330 }
1331
1332 ql_dbg(ql_dbg_tgt + ql_dbg_verbose, vha, 0xe026,
1333 "%s: no_ldif_dsd:%x, no_dif_bundl:%x\n", __func__,
1334 difctx->no_ldif_dsd, difctx->no_dif_bundl);
1335 } else {
1336 for_each_sg(sgl, sg, tot_dsds, i) {
1337 dma_addr_t sle_dma;
1338
1339 /* Allocate additional continuation packets? */
1340 if (avail_dsds == 0) {
1341 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1342 QLA_DSDS_PER_IOCB : used_dsds;
1343 dsd_list_len = (avail_dsds + 1) * 12;
1344 used_dsds -= avail_dsds;
1345
1346 /* allocate tracking DS */
1347 dsd_ptr = kzalloc(sizeof(*dsd_ptr), GFP_ATOMIC);
1348 if (!dsd_ptr) {
1349 ql_dbg(ql_dbg_tgt + ql_dbg_verbose,
1350 vha, 0xe027,
1351 "%s: failed alloc dsd_dma...\n",
1352 __func__);
1353 return 1;
1354 }
1355
1356 /* allocate new list */
1357 dsd_ptr->dsd_addr =
1358 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1359 &dsd_ptr->dsd_list_dma);
1360 if (!dsd_ptr->dsd_addr) {
1361 /* need to cleanup only this dsd_ptr */
1362 /* rest will be done by sp_free_dma() */
1363 kfree(dsd_ptr);
1364 return 1;
1365 }
1366
1367 if (sp) {
1368 list_add_tail(&dsd_ptr->list,
1369 &difctx->dsd_list);
1370 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1371 } else {
1372 list_add_tail(&dsd_ptr->list,
1373 &difctx->dsd_list);
1374 tc->ctx_dsd_alloced = 1;
1375 }
1376
1377 /* add new list to cmd iocb or last list */
1378 *cur_dsd++ =
1379 cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1380 *cur_dsd++ =
1381 cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1382 *cur_dsd++ = dsd_list_len;
1383 cur_dsd = dsd_ptr->dsd_addr;
1384 }
1385 sle_dma = sg_dma_address(sg);
1386 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1387 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1388 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1389 avail_dsds--;
1390 }
1391 }
1392 /* Null termination */
1393 *cur_dsd++ = 0;
1394 *cur_dsd++ = 0;
1395 *cur_dsd++ = 0;
1396 return 0;
1397 }
1398 /**
1399 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command
1400 * Type 6 IOCB types.
1401 *
1402 * @sp: SRB command to process
1403 * @cmd_pkt: Command type 3 IOCB
1404 * @tot_dsds: Total number of segments to transfer
1405 * @tot_prot_dsds: Total number of segments with protection information
1406 * @fw_prot_opts: Protection options to be passed to firmware
1407 */
1408 inline int
1409 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
1410 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts)
1411 {
1412 uint32_t *cur_dsd, *fcp_dl;
1413 scsi_qla_host_t *vha;
1414 struct scsi_cmnd *cmd;
1415 uint32_t total_bytes = 0;
1416 uint32_t data_bytes;
1417 uint32_t dif_bytes;
1418 uint8_t bundling = 1;
1419 uint16_t blk_size;
1420 struct crc_context *crc_ctx_pkt = NULL;
1421 struct qla_hw_data *ha;
1422 uint8_t additional_fcpcdb_len;
1423 uint16_t fcp_cmnd_len;
1424 struct fcp_cmnd *fcp_cmnd;
1425 dma_addr_t crc_ctx_dma;
1426
1427 cmd = GET_CMD_SP(sp);
1428
1429 /* Update entry type to indicate Command Type CRC_2 IOCB */
1430 *((uint32_t *)(&cmd_pkt->entry_type)) = cpu_to_le32(COMMAND_TYPE_CRC_2);
1431
1432 vha = sp->vha;
1433 ha = vha->hw;
1434
1435 /* No data transfer */
1436 data_bytes = scsi_bufflen(cmd);
1437 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1438 cmd_pkt->byte_count = cpu_to_le32(0);
1439 return QLA_SUCCESS;
1440 }
1441
1442 cmd_pkt->vp_index = sp->vha->vp_idx;
1443
1444 /* Set transfer direction */
1445 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
1446 cmd_pkt->control_flags =
1447 cpu_to_le16(CF_WRITE_DATA);
1448 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
1449 cmd_pkt->control_flags =
1450 cpu_to_le16(CF_READ_DATA);
1451 }
1452
1453 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1454 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) ||
1455 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) ||
1456 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT))
1457 bundling = 0;
1458
1459 /* Allocate CRC context from global pool */
1460 crc_ctx_pkt = sp->u.scmd.ctx =
1461 dma_pool_zalloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
1462
1463 if (!crc_ctx_pkt)
1464 goto crc_queuing_error;
1465
1466 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
1467
1468 sp->flags |= SRB_CRC_CTX_DMA_VALID;
1469
1470 /* Set handle */
1471 crc_ctx_pkt->handle = cmd_pkt->handle;
1472
1473 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
1474
1475 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *)
1476 &crc_ctx_pkt->ref_tag, tot_prot_dsds);
1477
1478 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
1479 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
1480 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
1481
1482 /* Determine SCSI command length -- align to 4 byte boundary */
1483 if (cmd->cmd_len > 16) {
1484 additional_fcpcdb_len = cmd->cmd_len - 16;
1485 if ((cmd->cmd_len % 4) != 0) {
1486 /* SCSI cmd > 16 bytes must be multiple of 4 */
1487 goto crc_queuing_error;
1488 }
1489 fcp_cmnd_len = 12 + cmd->cmd_len + 4;
1490 } else {
1491 additional_fcpcdb_len = 0;
1492 fcp_cmnd_len = 12 + 16 + 4;
1493 }
1494
1495 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd;
1496
1497 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len;
1498 if (cmd->sc_data_direction == DMA_TO_DEVICE)
1499 fcp_cmnd->additional_cdb_len |= 1;
1500 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
1501 fcp_cmnd->additional_cdb_len |= 2;
1502
1503 int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun);
1504 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
1505 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len);
1506 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32(
1507 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1508 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32(
1509 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1510 fcp_cmnd->task_management = 0;
1511 fcp_cmnd->task_attribute = TSK_SIMPLE;
1512
1513 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
1514
1515 /* Compute dif len and adjust data len to incude protection */
1516 dif_bytes = 0;
1517 blk_size = cmd->device->sector_size;
1518 dif_bytes = (data_bytes / blk_size) * 8;
1519
1520 switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
1521 case SCSI_PROT_READ_INSERT:
1522 case SCSI_PROT_WRITE_STRIP:
1523 total_bytes = data_bytes;
1524 data_bytes += dif_bytes;
1525 break;
1526
1527 case SCSI_PROT_READ_STRIP:
1528 case SCSI_PROT_WRITE_INSERT:
1529 case SCSI_PROT_READ_PASS:
1530 case SCSI_PROT_WRITE_PASS:
1531 total_bytes = data_bytes + dif_bytes;
1532 break;
1533 default:
1534 BUG();
1535 }
1536
1537 if (!qla2x00_hba_err_chk_enabled(sp))
1538 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
1539 /* HBA error checking enabled */
1540 else if (IS_PI_UNINIT_CAPABLE(ha)) {
1541 if ((scsi_get_prot_type(GET_CMD_SP(sp)) == SCSI_PROT_DIF_TYPE1)
1542 || (scsi_get_prot_type(GET_CMD_SP(sp)) ==
1543 SCSI_PROT_DIF_TYPE2))
1544 fw_prot_opts |= BIT_10;
1545 else if (scsi_get_prot_type(GET_CMD_SP(sp)) ==
1546 SCSI_PROT_DIF_TYPE3)
1547 fw_prot_opts |= BIT_11;
1548 }
1549
1550 if (!bundling) {
1551 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
1552 } else {
1553 /*
1554 * Configure Bundling if we need to fetch interlaving
1555 * protection PCI accesses
1556 */
1557 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
1558 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
1559 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds -
1560 tot_prot_dsds);
1561 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
1562 }
1563
1564 /* Finish the common fields of CRC pkt */
1565 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size);
1566 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
1567 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
1568 crc_ctx_pkt->guard_seed = cpu_to_le16(0);
1569 /* Fibre channel byte count */
1570 cmd_pkt->byte_count = cpu_to_le32(total_bytes);
1571 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 +
1572 additional_fcpcdb_len);
1573 *fcp_dl = htonl(total_bytes);
1574
1575 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1576 cmd_pkt->byte_count = cpu_to_le32(0);
1577 return QLA_SUCCESS;
1578 }
1579 /* Walks data segments */
1580
1581 cmd_pkt->control_flags |= cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE);
1582
1583 if (!bundling && tot_prot_dsds) {
1584 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp,
1585 cur_dsd, tot_dsds, NULL))
1586 goto crc_queuing_error;
1587 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd,
1588 (tot_dsds - tot_prot_dsds), NULL))
1589 goto crc_queuing_error;
1590
1591 if (bundling && tot_prot_dsds) {
1592 /* Walks dif segments */
1593 cmd_pkt->control_flags |= cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE);
1594 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
1595 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd,
1596 tot_prot_dsds, NULL))
1597 goto crc_queuing_error;
1598 }
1599 return QLA_SUCCESS;
1600
1601 crc_queuing_error:
1602 /* Cleanup will be performed by the caller */
1603
1604 return QLA_FUNCTION_FAILED;
1605 }
1606
1607 /**
1608 * qla24xx_start_scsi() - Send a SCSI command to the ISP
1609 * @sp: command to send to the ISP
1610 *
1611 * Returns non-zero if a failure occurred, else zero.
1612 */
1613 int
1614 qla24xx_start_scsi(srb_t *sp)
1615 {
1616 int nseg;
1617 unsigned long flags;
1618 uint32_t *clr_ptr;
1619 uint32_t index;
1620 uint32_t handle;
1621 struct cmd_type_7 *cmd_pkt;
1622 uint16_t cnt;
1623 uint16_t req_cnt;
1624 uint16_t tot_dsds;
1625 struct req_que *req = NULL;
1626 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1627 struct scsi_qla_host *vha = sp->vha;
1628 struct qla_hw_data *ha = vha->hw;
1629
1630 /* Setup device pointers. */
1631 req = vha->req;
1632
1633 /* So we know we haven't pci_map'ed anything yet */
1634 tot_dsds = 0;
1635
1636 /* Send marker if required */
1637 if (vha->marker_needed != 0) {
1638 if (qla2x00_marker(vha, ha->base_qpair, 0, 0, MK_SYNC_ALL) !=
1639 QLA_SUCCESS)
1640 return QLA_FUNCTION_FAILED;
1641 vha->marker_needed = 0;
1642 }
1643
1644 /* Acquire ring specific lock */
1645 spin_lock_irqsave(&ha->hardware_lock, flags);
1646
1647 /* Check for room in outstanding command list. */
1648 handle = req->current_outstanding_cmd;
1649 for (index = 1; index < req->num_outstanding_cmds; index++) {
1650 handle++;
1651 if (handle == req->num_outstanding_cmds)
1652 handle = 1;
1653 if (!req->outstanding_cmds[handle])
1654 break;
1655 }
1656 if (index == req->num_outstanding_cmds)
1657 goto queuing_error;
1658
1659 /* Map the sg table so we have an accurate count of sg entries needed */
1660 if (scsi_sg_count(cmd)) {
1661 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1662 scsi_sg_count(cmd), cmd->sc_data_direction);
1663 if (unlikely(!nseg))
1664 goto queuing_error;
1665 } else
1666 nseg = 0;
1667
1668 tot_dsds = nseg;
1669 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
1670 if (req->cnt < (req_cnt + 2)) {
1671 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
1672 RD_REG_DWORD_RELAXED(req->req_q_out);
1673 if (req->ring_index < cnt)
1674 req->cnt = cnt - req->ring_index;
1675 else
1676 req->cnt = req->length -
1677 (req->ring_index - cnt);
1678 if (req->cnt < (req_cnt + 2))
1679 goto queuing_error;
1680 }
1681
1682 /* Build command packet. */
1683 req->current_outstanding_cmd = handle;
1684 req->outstanding_cmds[handle] = sp;
1685 sp->handle = handle;
1686 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1687 req->cnt -= req_cnt;
1688
1689 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
1690 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1691
1692 /* Zero out remaining portion of packet. */
1693 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
1694 clr_ptr = (uint32_t *)cmd_pkt + 2;
1695 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1696 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1697
1698 /* Set NPORT-ID and LUN number*/
1699 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1700 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1701 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1702 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1703 cmd_pkt->vp_index = sp->vha->vp_idx;
1704
1705 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
1706 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1707
1708 cmd_pkt->task = TSK_SIMPLE;
1709
1710 /* Load SCSI command packet. */
1711 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
1712 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
1713
1714 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
1715
1716 /* Build IOCB segments */
1717 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req);
1718
1719 /* Set total data segment count. */
1720 cmd_pkt->entry_count = (uint8_t)req_cnt;
1721 wmb();
1722 /* Adjust ring index. */
1723 req->ring_index++;
1724 if (req->ring_index == req->length) {
1725 req->ring_index = 0;
1726 req->ring_ptr = req->ring;
1727 } else
1728 req->ring_ptr++;
1729
1730 sp->flags |= SRB_DMA_VALID;
1731
1732 /* Set chip new ring index. */
1733 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1734
1735 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1736 return QLA_SUCCESS;
1737
1738 queuing_error:
1739 if (tot_dsds)
1740 scsi_dma_unmap(cmd);
1741
1742 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1743
1744 return QLA_FUNCTION_FAILED;
1745 }
1746
1747 /**
1748 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP
1749 * @sp: command to send to the ISP
1750 *
1751 * Returns non-zero if a failure occurred, else zero.
1752 */
1753 int
1754 qla24xx_dif_start_scsi(srb_t *sp)
1755 {
1756 int nseg;
1757 unsigned long flags;
1758 uint32_t *clr_ptr;
1759 uint32_t index;
1760 uint32_t handle;
1761 uint16_t cnt;
1762 uint16_t req_cnt = 0;
1763 uint16_t tot_dsds;
1764 uint16_t tot_prot_dsds;
1765 uint16_t fw_prot_opts = 0;
1766 struct req_que *req = NULL;
1767 struct rsp_que *rsp = NULL;
1768 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1769 struct scsi_qla_host *vha = sp->vha;
1770 struct qla_hw_data *ha = vha->hw;
1771 struct cmd_type_crc_2 *cmd_pkt;
1772 uint32_t status = 0;
1773
1774 #define QDSS_GOT_Q_SPACE BIT_0
1775
1776 /* Only process protection or >16 cdb in this routine */
1777 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
1778 if (cmd->cmd_len <= 16)
1779 return qla24xx_start_scsi(sp);
1780 }
1781
1782 /* Setup device pointers. */
1783 req = vha->req;
1784 rsp = req->rsp;
1785
1786 /* So we know we haven't pci_map'ed anything yet */
1787 tot_dsds = 0;
1788
1789 /* Send marker if required */
1790 if (vha->marker_needed != 0) {
1791 if (qla2x00_marker(vha, ha->base_qpair, 0, 0, MK_SYNC_ALL) !=
1792 QLA_SUCCESS)
1793 return QLA_FUNCTION_FAILED;
1794 vha->marker_needed = 0;
1795 }
1796
1797 /* Acquire ring specific lock */
1798 spin_lock_irqsave(&ha->hardware_lock, flags);
1799
1800 /* Check for room in outstanding command list. */
1801 handle = req->current_outstanding_cmd;
1802 for (index = 1; index < req->num_outstanding_cmds; index++) {
1803 handle++;
1804 if (handle == req->num_outstanding_cmds)
1805 handle = 1;
1806 if (!req->outstanding_cmds[handle])
1807 break;
1808 }
1809
1810 if (index == req->num_outstanding_cmds)
1811 goto queuing_error;
1812
1813 /* Compute number of required data segments */
1814 /* Map the sg table so we have an accurate count of sg entries needed */
1815 if (scsi_sg_count(cmd)) {
1816 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1817 scsi_sg_count(cmd), cmd->sc_data_direction);
1818 if (unlikely(!nseg))
1819 goto queuing_error;
1820 else
1821 sp->flags |= SRB_DMA_VALID;
1822
1823 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1824 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1825 struct qla2_sgx sgx;
1826 uint32_t partial;
1827
1828 memset(&sgx, 0, sizeof(struct qla2_sgx));
1829 sgx.tot_bytes = scsi_bufflen(cmd);
1830 sgx.cur_sg = scsi_sglist(cmd);
1831 sgx.sp = sp;
1832
1833 nseg = 0;
1834 while (qla24xx_get_one_block_sg(
1835 cmd->device->sector_size, &sgx, &partial))
1836 nseg++;
1837 }
1838 } else
1839 nseg = 0;
1840
1841 /* number of required data segments */
1842 tot_dsds = nseg;
1843
1844 /* Compute number of required protection segments */
1845 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
1846 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
1847 scsi_prot_sg_count(cmd), cmd->sc_data_direction);
1848 if (unlikely(!nseg))
1849 goto queuing_error;
1850 else
1851 sp->flags |= SRB_CRC_PROT_DMA_VALID;
1852
1853 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1854 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1855 nseg = scsi_bufflen(cmd) / cmd->device->sector_size;
1856 }
1857 } else {
1858 nseg = 0;
1859 }
1860
1861 req_cnt = 1;
1862 /* Total Data and protection sg segment(s) */
1863 tot_prot_dsds = nseg;
1864 tot_dsds += nseg;
1865 if (req->cnt < (req_cnt + 2)) {
1866 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
1867 RD_REG_DWORD_RELAXED(req->req_q_out);
1868 if (req->ring_index < cnt)
1869 req->cnt = cnt - req->ring_index;
1870 else
1871 req->cnt = req->length -
1872 (req->ring_index - cnt);
1873 if (req->cnt < (req_cnt + 2))
1874 goto queuing_error;
1875 }
1876
1877 status |= QDSS_GOT_Q_SPACE;
1878
1879 /* Build header part of command packet (excluding the OPCODE). */
1880 req->current_outstanding_cmd = handle;
1881 req->outstanding_cmds[handle] = sp;
1882 sp->handle = handle;
1883 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1884 req->cnt -= req_cnt;
1885
1886 /* Fill-in common area */
1887 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
1888 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1889
1890 clr_ptr = (uint32_t *)cmd_pkt + 2;
1891 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1892
1893 /* Set NPORT-ID and LUN number*/
1894 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1895 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1896 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1897 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1898
1899 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
1900 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1901
1902 /* Total Data and protection segment(s) */
1903 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1904
1905 /* Build IOCB segments and adjust for data protection segments */
1906 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
1907 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
1908 QLA_SUCCESS)
1909 goto queuing_error;
1910
1911 cmd_pkt->entry_count = (uint8_t)req_cnt;
1912 /* Specify response queue number where completion should happen */
1913 cmd_pkt->entry_status = (uint8_t) rsp->id;
1914 cmd_pkt->timeout = cpu_to_le16(0);
1915 wmb();
1916
1917 /* Adjust ring index. */
1918 req->ring_index++;
1919 if (req->ring_index == req->length) {
1920 req->ring_index = 0;
1921 req->ring_ptr = req->ring;
1922 } else
1923 req->ring_ptr++;
1924
1925 /* Set chip new ring index. */
1926 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1927
1928 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1929
1930 return QLA_SUCCESS;
1931
1932 queuing_error:
1933 if (status & QDSS_GOT_Q_SPACE) {
1934 req->outstanding_cmds[handle] = NULL;
1935 req->cnt += req_cnt;
1936 }
1937 /* Cleanup will be performed by the caller (queuecommand) */
1938
1939 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1940 return QLA_FUNCTION_FAILED;
1941 }
1942
1943 /**
1944 * qla2xxx_start_scsi_mq() - Send a SCSI command to the ISP
1945 * @sp: command to send to the ISP
1946 *
1947 * Returns non-zero if a failure occurred, else zero.
1948 */
1949 static int
1950 qla2xxx_start_scsi_mq(srb_t *sp)
1951 {
1952 int nseg;
1953 unsigned long flags;
1954 uint32_t *clr_ptr;
1955 uint32_t index;
1956 uint32_t handle;
1957 struct cmd_type_7 *cmd_pkt;
1958 uint16_t cnt;
1959 uint16_t req_cnt;
1960 uint16_t tot_dsds;
1961 struct req_que *req = NULL;
1962 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1963 struct scsi_qla_host *vha = sp->fcport->vha;
1964 struct qla_hw_data *ha = vha->hw;
1965 struct qla_qpair *qpair = sp->qpair;
1966
1967 /* Acquire qpair specific lock */
1968 spin_lock_irqsave(&qpair->qp_lock, flags);
1969
1970 /* Setup qpair pointers */
1971 req = qpair->req;
1972
1973 /* So we know we haven't pci_map'ed anything yet */
1974 tot_dsds = 0;
1975
1976 /* Send marker if required */
1977 if (vha->marker_needed != 0) {
1978 if (__qla2x00_marker(vha, qpair, 0, 0, MK_SYNC_ALL) !=
1979 QLA_SUCCESS) {
1980 spin_unlock_irqrestore(&qpair->qp_lock, flags);
1981 return QLA_FUNCTION_FAILED;
1982 }
1983 vha->marker_needed = 0;
1984 }
1985
1986 /* Check for room in outstanding command list. */
1987 handle = req->current_outstanding_cmd;
1988 for (index = 1; index < req->num_outstanding_cmds; index++) {
1989 handle++;
1990 if (handle == req->num_outstanding_cmds)
1991 handle = 1;
1992 if (!req->outstanding_cmds[handle])
1993 break;
1994 }
1995 if (index == req->num_outstanding_cmds)
1996 goto queuing_error;
1997
1998 /* Map the sg table so we have an accurate count of sg entries needed */
1999 if (scsi_sg_count(cmd)) {
2000 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
2001 scsi_sg_count(cmd), cmd->sc_data_direction);
2002 if (unlikely(!nseg))
2003 goto queuing_error;
2004 } else
2005 nseg = 0;
2006
2007 tot_dsds = nseg;
2008 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
2009 if (req->cnt < (req_cnt + 2)) {
2010 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
2011 RD_REG_DWORD_RELAXED(req->req_q_out);
2012 if (req->ring_index < cnt)
2013 req->cnt = cnt - req->ring_index;
2014 else
2015 req->cnt = req->length -
2016 (req->ring_index - cnt);
2017 if (req->cnt < (req_cnt + 2))
2018 goto queuing_error;
2019 }
2020
2021 /* Build command packet. */
2022 req->current_outstanding_cmd = handle;
2023 req->outstanding_cmds[handle] = sp;
2024 sp->handle = handle;
2025 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
2026 req->cnt -= req_cnt;
2027
2028 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
2029 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2030
2031 /* Zero out remaining portion of packet. */
2032 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
2033 clr_ptr = (uint32_t *)cmd_pkt + 2;
2034 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2035 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
2036
2037 /* Set NPORT-ID and LUN number*/
2038 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2039 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
2040 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
2041 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
2042 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
2043
2044 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
2045 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
2046
2047 cmd_pkt->task = TSK_SIMPLE;
2048
2049 /* Load SCSI command packet. */
2050 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
2051 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
2052
2053 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
2054
2055 /* Build IOCB segments */
2056 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req);
2057
2058 /* Set total data segment count. */
2059 cmd_pkt->entry_count = (uint8_t)req_cnt;
2060 wmb();
2061 /* Adjust ring index. */
2062 req->ring_index++;
2063 if (req->ring_index == req->length) {
2064 req->ring_index = 0;
2065 req->ring_ptr = req->ring;
2066 } else
2067 req->ring_ptr++;
2068
2069 sp->flags |= SRB_DMA_VALID;
2070
2071 /* Set chip new ring index. */
2072 WRT_REG_DWORD(req->req_q_in, req->ring_index);
2073
2074 spin_unlock_irqrestore(&qpair->qp_lock, flags);
2075 return QLA_SUCCESS;
2076
2077 queuing_error:
2078 if (tot_dsds)
2079 scsi_dma_unmap(cmd);
2080
2081 spin_unlock_irqrestore(&qpair->qp_lock, flags);
2082
2083 return QLA_FUNCTION_FAILED;
2084 }
2085
2086
2087 /**
2088 * qla2xxx_dif_start_scsi_mq() - Send a SCSI command to the ISP
2089 * @sp: command to send to the ISP
2090 *
2091 * Returns non-zero if a failure occurred, else zero.
2092 */
2093 int
2094 qla2xxx_dif_start_scsi_mq(srb_t *sp)
2095 {
2096 int nseg;
2097 unsigned long flags;
2098 uint32_t *clr_ptr;
2099 uint32_t index;
2100 uint32_t handle;
2101 uint16_t cnt;
2102 uint16_t req_cnt = 0;
2103 uint16_t tot_dsds;
2104 uint16_t tot_prot_dsds;
2105 uint16_t fw_prot_opts = 0;
2106 struct req_que *req = NULL;
2107 struct rsp_que *rsp = NULL;
2108 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
2109 struct scsi_qla_host *vha = sp->fcport->vha;
2110 struct qla_hw_data *ha = vha->hw;
2111 struct cmd_type_crc_2 *cmd_pkt;
2112 uint32_t status = 0;
2113 struct qla_qpair *qpair = sp->qpair;
2114
2115 #define QDSS_GOT_Q_SPACE BIT_0
2116
2117 /* Check for host side state */
2118 if (!qpair->online) {
2119 cmd->result = DID_NO_CONNECT << 16;
2120 return QLA_INTERFACE_ERROR;
2121 }
2122
2123 if (!qpair->difdix_supported &&
2124 scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
2125 cmd->result = DID_NO_CONNECT << 16;
2126 return QLA_INTERFACE_ERROR;
2127 }
2128
2129 /* Only process protection or >16 cdb in this routine */
2130 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
2131 if (cmd->cmd_len <= 16)
2132 return qla2xxx_start_scsi_mq(sp);
2133 }
2134
2135 spin_lock_irqsave(&qpair->qp_lock, flags);
2136
2137 /* Setup qpair pointers */
2138 rsp = qpair->rsp;
2139 req = qpair->req;
2140
2141 /* So we know we haven't pci_map'ed anything yet */
2142 tot_dsds = 0;
2143
2144 /* Send marker if required */
2145 if (vha->marker_needed != 0) {
2146 if (__qla2x00_marker(vha, qpair, 0, 0, MK_SYNC_ALL) !=
2147 QLA_SUCCESS) {
2148 spin_unlock_irqrestore(&qpair->qp_lock, flags);
2149 return QLA_FUNCTION_FAILED;
2150 }
2151 vha->marker_needed = 0;
2152 }
2153
2154 /* Check for room in outstanding command list. */
2155 handle = req->current_outstanding_cmd;
2156 for (index = 1; index < req->num_outstanding_cmds; index++) {
2157 handle++;
2158 if (handle == req->num_outstanding_cmds)
2159 handle = 1;
2160 if (!req->outstanding_cmds[handle])
2161 break;
2162 }
2163
2164 if (index == req->num_outstanding_cmds)
2165 goto queuing_error;
2166
2167 /* Compute number of required data segments */
2168 /* Map the sg table so we have an accurate count of sg entries needed */
2169 if (scsi_sg_count(cmd)) {
2170 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
2171 scsi_sg_count(cmd), cmd->sc_data_direction);
2172 if (unlikely(!nseg))
2173 goto queuing_error;
2174 else
2175 sp->flags |= SRB_DMA_VALID;
2176
2177 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
2178 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
2179 struct qla2_sgx sgx;
2180 uint32_t partial;
2181
2182 memset(&sgx, 0, sizeof(struct qla2_sgx));
2183 sgx.tot_bytes = scsi_bufflen(cmd);
2184 sgx.cur_sg = scsi_sglist(cmd);
2185 sgx.sp = sp;
2186
2187 nseg = 0;
2188 while (qla24xx_get_one_block_sg(
2189 cmd->device->sector_size, &sgx, &partial))
2190 nseg++;
2191 }
2192 } else
2193 nseg = 0;
2194
2195 /* number of required data segments */
2196 tot_dsds = nseg;
2197
2198 /* Compute number of required protection segments */
2199 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
2200 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
2201 scsi_prot_sg_count(cmd), cmd->sc_data_direction);
2202 if (unlikely(!nseg))
2203 goto queuing_error;
2204 else
2205 sp->flags |= SRB_CRC_PROT_DMA_VALID;
2206
2207 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
2208 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
2209 nseg = scsi_bufflen(cmd) / cmd->device->sector_size;
2210 }
2211 } else {
2212 nseg = 0;
2213 }
2214
2215 req_cnt = 1;
2216 /* Total Data and protection sg segment(s) */
2217 tot_prot_dsds = nseg;
2218 tot_dsds += nseg;
2219 if (req->cnt < (req_cnt + 2)) {
2220 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
2221 RD_REG_DWORD_RELAXED(req->req_q_out);
2222 if (req->ring_index < cnt)
2223 req->cnt = cnt - req->ring_index;
2224 else
2225 req->cnt = req->length -
2226 (req->ring_index - cnt);
2227 if (req->cnt < (req_cnt + 2))
2228 goto queuing_error;
2229 }
2230
2231 status |= QDSS_GOT_Q_SPACE;
2232
2233 /* Build header part of command packet (excluding the OPCODE). */
2234 req->current_outstanding_cmd = handle;
2235 req->outstanding_cmds[handle] = sp;
2236 sp->handle = handle;
2237 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
2238 req->cnt -= req_cnt;
2239
2240 /* Fill-in common area */
2241 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
2242 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2243
2244 clr_ptr = (uint32_t *)cmd_pkt + 2;
2245 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2246
2247 /* Set NPORT-ID and LUN number*/
2248 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2249 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
2250 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
2251 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
2252
2253 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
2254 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
2255
2256 /* Total Data and protection segment(s) */
2257 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
2258
2259 /* Build IOCB segments and adjust for data protection segments */
2260 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
2261 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
2262 QLA_SUCCESS)
2263 goto queuing_error;
2264
2265 cmd_pkt->entry_count = (uint8_t)req_cnt;
2266 cmd_pkt->timeout = cpu_to_le16(0);
2267 wmb();
2268
2269 /* Adjust ring index. */
2270 req->ring_index++;
2271 if (req->ring_index == req->length) {
2272 req->ring_index = 0;
2273 req->ring_ptr = req->ring;
2274 } else
2275 req->ring_ptr++;
2276
2277 /* Set chip new ring index. */
2278 WRT_REG_DWORD(req->req_q_in, req->ring_index);
2279
2280 /* Manage unprocessed RIO/ZIO commands in response queue. */
2281 if (vha->flags.process_response_queue &&
2282 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
2283 qla24xx_process_response_queue(vha, rsp);
2284
2285 spin_unlock_irqrestore(&qpair->qp_lock, flags);
2286
2287 return QLA_SUCCESS;
2288
2289 queuing_error:
2290 if (status & QDSS_GOT_Q_SPACE) {
2291 req->outstanding_cmds[handle] = NULL;
2292 req->cnt += req_cnt;
2293 }
2294 /* Cleanup will be performed by the caller (queuecommand) */
2295
2296 spin_unlock_irqrestore(&qpair->qp_lock, flags);
2297 return QLA_FUNCTION_FAILED;
2298 }
2299
2300 /* Generic Control-SRB manipulation functions. */
2301
2302 /* hardware_lock assumed to be held. */
2303
2304 void *
2305 __qla2x00_alloc_iocbs(struct qla_qpair *qpair, srb_t *sp)
2306 {
2307 scsi_qla_host_t *vha = qpair->vha;
2308 struct qla_hw_data *ha = vha->hw;
2309 struct req_que *req = qpair->req;
2310 device_reg_t *reg = ISP_QUE_REG(ha, req->id);
2311 uint32_t index, handle;
2312 request_t *pkt;
2313 uint16_t cnt, req_cnt;
2314
2315 pkt = NULL;
2316 req_cnt = 1;
2317 handle = 0;
2318
2319 if (sp && (sp->type != SRB_SCSI_CMD)) {
2320 /* Adjust entry-counts as needed. */
2321 req_cnt = sp->iocbs;
2322 }
2323
2324 /* Check for room on request queue. */
2325 if (req->cnt < req_cnt + 2) {
2326 if (qpair->use_shadow_reg)
2327 cnt = *req->out_ptr;
2328 else if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha))
2329 cnt = RD_REG_DWORD(&reg->isp25mq.req_q_out);
2330 else if (IS_P3P_TYPE(ha))
2331 cnt = RD_REG_DWORD(&reg->isp82.req_q_out);
2332 else if (IS_FWI2_CAPABLE(ha))
2333 cnt = RD_REG_DWORD(&reg->isp24.req_q_out);
2334 else if (IS_QLAFX00(ha))
2335 cnt = RD_REG_DWORD(&reg->ispfx00.req_q_out);
2336 else
2337 cnt = qla2x00_debounce_register(
2338 ISP_REQ_Q_OUT(ha, &reg->isp));
2339
2340 if (req->ring_index < cnt)
2341 req->cnt = cnt - req->ring_index;
2342 else
2343 req->cnt = req->length -
2344 (req->ring_index - cnt);
2345 }
2346 if (req->cnt < req_cnt + 2)
2347 goto queuing_error;
2348
2349 if (sp) {
2350 /* Check for room in outstanding command list. */
2351 handle = req->current_outstanding_cmd;
2352 for (index = 1; index < req->num_outstanding_cmds; index++) {
2353 handle++;
2354 if (handle == req->num_outstanding_cmds)
2355 handle = 1;
2356 if (!req->outstanding_cmds[handle])
2357 break;
2358 }
2359 if (index == req->num_outstanding_cmds) {
2360 ql_log(ql_log_warn, vha, 0x700b,
2361 "No room on outstanding cmd array.\n");
2362 goto queuing_error;
2363 }
2364
2365 /* Prep command array. */
2366 req->current_outstanding_cmd = handle;
2367 req->outstanding_cmds[handle] = sp;
2368 sp->handle = handle;
2369 }
2370
2371 /* Prep packet */
2372 req->cnt -= req_cnt;
2373 pkt = req->ring_ptr;
2374 memset(pkt, 0, REQUEST_ENTRY_SIZE);
2375 if (IS_QLAFX00(ha)) {
2376 WRT_REG_BYTE((void __iomem *)&pkt->entry_count, req_cnt);
2377 WRT_REG_WORD((void __iomem *)&pkt->handle, handle);
2378 } else {
2379 pkt->entry_count = req_cnt;
2380 pkt->handle = handle;
2381 }
2382
2383 return pkt;
2384
2385 queuing_error:
2386 qpair->tgt_counters.num_alloc_iocb_failed++;
2387 return pkt;
2388 }
2389
2390 void *
2391 qla2x00_alloc_iocbs_ready(struct qla_qpair *qpair, srb_t *sp)
2392 {
2393 scsi_qla_host_t *vha = qpair->vha;
2394
2395 if (qla2x00_reset_active(vha))
2396 return NULL;
2397
2398 return __qla2x00_alloc_iocbs(qpair, sp);
2399 }
2400
2401 void *
2402 qla2x00_alloc_iocbs(struct scsi_qla_host *vha, srb_t *sp)
2403 {
2404 return __qla2x00_alloc_iocbs(vha->hw->base_qpair, sp);
2405 }
2406
2407 static void
2408 qla24xx_prli_iocb(srb_t *sp, struct logio_entry_24xx *logio)
2409 {
2410 struct srb_iocb *lio = &sp->u.iocb_cmd;
2411
2412 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
2413 logio->control_flags = cpu_to_le16(LCF_COMMAND_PRLI);
2414 if (lio->u.logio.flags & SRB_LOGIN_NVME_PRLI) {
2415 logio->control_flags |= LCF_NVME_PRLI;
2416 if (sp->vha->flags.nvme_first_burst)
2417 logio->io_parameter[0] = NVME_PRLI_SP_FIRST_BURST;
2418 }
2419
2420 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2421 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
2422 logio->port_id[1] = sp->fcport->d_id.b.area;
2423 logio->port_id[2] = sp->fcport->d_id.b.domain;
2424 logio->vp_index = sp->vha->vp_idx;
2425 }
2426
2427 static void
2428 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
2429 {
2430 struct srb_iocb *lio = &sp->u.iocb_cmd;
2431
2432 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
2433 if (lio->u.logio.flags & SRB_LOGIN_PRLI_ONLY) {
2434 logio->control_flags = cpu_to_le16(LCF_COMMAND_PRLI);
2435 } else {
2436 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
2437 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
2438 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
2439 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
2440 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
2441 }
2442 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2443 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
2444 logio->port_id[1] = sp->fcport->d_id.b.area;
2445 logio->port_id[2] = sp->fcport->d_id.b.domain;
2446 logio->vp_index = sp->vha->vp_idx;
2447 }
2448
2449 static void
2450 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
2451 {
2452 struct qla_hw_data *ha = sp->vha->hw;
2453 struct srb_iocb *lio = &sp->u.iocb_cmd;
2454 uint16_t opts;
2455
2456 mbx->entry_type = MBX_IOCB_TYPE;
2457 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
2458 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
2459 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0;
2460 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0;
2461 if (HAS_EXTENDED_IDS(ha)) {
2462 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
2463 mbx->mb10 = cpu_to_le16(opts);
2464 } else {
2465 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts);
2466 }
2467 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
2468 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
2469 sp->fcport->d_id.b.al_pa);
2470 mbx->mb9 = cpu_to_le16(sp->vha->vp_idx);
2471 }
2472
2473 static void
2474 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
2475 {
2476 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
2477 logio->control_flags =
2478 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
2479 if (!sp->fcport->keep_nport_handle)
2480 logio->control_flags |= cpu_to_le16(LCF_FREE_NPORT);
2481 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2482 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
2483 logio->port_id[1] = sp->fcport->d_id.b.area;
2484 logio->port_id[2] = sp->fcport->d_id.b.domain;
2485 logio->vp_index = sp->vha->vp_idx;
2486 }
2487
2488 static void
2489 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx)
2490 {
2491 struct qla_hw_data *ha = sp->vha->hw;
2492
2493 mbx->entry_type = MBX_IOCB_TYPE;
2494 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
2495 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
2496 mbx->mb1 = HAS_EXTENDED_IDS(ha) ?
2497 cpu_to_le16(sp->fcport->loop_id):
2498 cpu_to_le16(sp->fcport->loop_id << 8);
2499 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
2500 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
2501 sp->fcport->d_id.b.al_pa);
2502 mbx->mb9 = cpu_to_le16(sp->vha->vp_idx);
2503 /* Implicit: mbx->mbx10 = 0. */
2504 }
2505
2506 static void
2507 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio)
2508 {
2509 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
2510 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC);
2511 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2512 logio->vp_index = sp->vha->vp_idx;
2513 }
2514
2515 static void
2516 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx)
2517 {
2518 struct qla_hw_data *ha = sp->vha->hw;
2519
2520 mbx->entry_type = MBX_IOCB_TYPE;
2521 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
2522 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE);
2523 if (HAS_EXTENDED_IDS(ha)) {
2524 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
2525 mbx->mb10 = cpu_to_le16(BIT_0);
2526 } else {
2527 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0);
2528 }
2529 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma));
2530 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma));
2531 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma)));
2532 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma)));
2533 mbx->mb9 = cpu_to_le16(sp->vha->vp_idx);
2534 }
2535
2536 static void
2537 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk)
2538 {
2539 uint32_t flags;
2540 uint64_t lun;
2541 struct fc_port *fcport = sp->fcport;
2542 scsi_qla_host_t *vha = fcport->vha;
2543 struct qla_hw_data *ha = vha->hw;
2544 struct srb_iocb *iocb = &sp->u.iocb_cmd;
2545 struct req_que *req = vha->req;
2546
2547 flags = iocb->u.tmf.flags;
2548 lun = iocb->u.tmf.lun;
2549
2550 tsk->entry_type = TSK_MGMT_IOCB_TYPE;
2551 tsk->entry_count = 1;
2552 tsk->handle = MAKE_HANDLE(req->id, tsk->handle);
2553 tsk->nport_handle = cpu_to_le16(fcport->loop_id);
2554 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
2555 tsk->control_flags = cpu_to_le32(flags);
2556 tsk->port_id[0] = fcport->d_id.b.al_pa;
2557 tsk->port_id[1] = fcport->d_id.b.area;
2558 tsk->port_id[2] = fcport->d_id.b.domain;
2559 tsk->vp_index = fcport->vha->vp_idx;
2560
2561 if (flags == TCF_LUN_RESET) {
2562 int_to_scsilun(lun, &tsk->lun);
2563 host_to_fcp_swap((uint8_t *)&tsk->lun,
2564 sizeof(tsk->lun));
2565 }
2566 }
2567
2568 static void
2569 qla2x00_els_dcmd_sp_free(void *data)
2570 {
2571 srb_t *sp = data;
2572 struct srb_iocb *elsio = &sp->u.iocb_cmd;
2573
2574 kfree(sp->fcport);
2575
2576 if (elsio->u.els_logo.els_logo_pyld)
2577 dma_free_coherent(&sp->vha->hw->pdev->dev, DMA_POOL_SIZE,
2578 elsio->u.els_logo.els_logo_pyld,
2579 elsio->u.els_logo.els_logo_pyld_dma);
2580
2581 del_timer(&elsio->timer);
2582 qla2x00_rel_sp(sp);
2583 }
2584
2585 static void
2586 qla2x00_els_dcmd_iocb_timeout(void *data)
2587 {
2588 srb_t *sp = data;
2589 fc_port_t *fcport = sp->fcport;
2590 struct scsi_qla_host *vha = sp->vha;
2591 struct srb_iocb *lio = &sp->u.iocb_cmd;
2592
2593 ql_dbg(ql_dbg_io, vha, 0x3069,
2594 "%s Timeout, hdl=%x, portid=%02x%02x%02x\n",
2595 sp->name, sp->handle, fcport->d_id.b.domain, fcport->d_id.b.area,
2596 fcport->d_id.b.al_pa);
2597
2598 complete(&lio->u.els_logo.comp);
2599 }
2600
2601 static void
2602 qla2x00_els_dcmd_sp_done(void *ptr, int res)
2603 {
2604 srb_t *sp = ptr;
2605 fc_port_t *fcport = sp->fcport;
2606 struct srb_iocb *lio = &sp->u.iocb_cmd;
2607 struct scsi_qla_host *vha = sp->vha;
2608
2609 ql_dbg(ql_dbg_io, vha, 0x3072,
2610 "%s hdl=%x, portid=%02x%02x%02x done\n",
2611 sp->name, sp->handle, fcport->d_id.b.domain,
2612 fcport->d_id.b.area, fcport->d_id.b.al_pa);
2613
2614 complete(&lio->u.els_logo.comp);
2615 }
2616
2617 int
2618 qla24xx_els_dcmd_iocb(scsi_qla_host_t *vha, int els_opcode,
2619 port_id_t remote_did)
2620 {
2621 srb_t *sp;
2622 fc_port_t *fcport = NULL;
2623 struct srb_iocb *elsio = NULL;
2624 struct qla_hw_data *ha = vha->hw;
2625 struct els_logo_payload logo_pyld;
2626 int rval = QLA_SUCCESS;
2627
2628 fcport = qla2x00_alloc_fcport(vha, GFP_KERNEL);
2629 if (!fcport) {
2630 ql_log(ql_log_info, vha, 0x70e5, "fcport allocation failed\n");
2631 return -ENOMEM;
2632 }
2633
2634 /* Alloc SRB structure */
2635 sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
2636 if (!sp) {
2637 kfree(fcport);
2638 ql_log(ql_log_info, vha, 0x70e6,
2639 "SRB allocation failed\n");
2640 return -ENOMEM;
2641 }
2642
2643 elsio = &sp->u.iocb_cmd;
2644 fcport->loop_id = 0xFFFF;
2645 fcport->d_id.b.domain = remote_did.b.domain;
2646 fcport->d_id.b.area = remote_did.b.area;
2647 fcport->d_id.b.al_pa = remote_did.b.al_pa;
2648
2649 ql_dbg(ql_dbg_io, vha, 0x3073, "portid=%02x%02x%02x done\n",
2650 fcport->d_id.b.domain, fcport->d_id.b.area, fcport->d_id.b.al_pa);
2651
2652 sp->type = SRB_ELS_DCMD;
2653 sp->name = "ELS_DCMD";
2654 sp->fcport = fcport;
2655 elsio->timeout = qla2x00_els_dcmd_iocb_timeout;
2656 qla2x00_init_timer(sp, ELS_DCMD_TIMEOUT);
2657 init_completion(&sp->u.iocb_cmd.u.els_logo.comp);
2658 sp->done = qla2x00_els_dcmd_sp_done;
2659 sp->free = qla2x00_els_dcmd_sp_free;
2660
2661 elsio->u.els_logo.els_logo_pyld = dma_alloc_coherent(&ha->pdev->dev,
2662 DMA_POOL_SIZE, &elsio->u.els_logo.els_logo_pyld_dma,
2663 GFP_KERNEL);
2664
2665 if (!elsio->u.els_logo.els_logo_pyld) {
2666 sp->free(sp);
2667 return QLA_FUNCTION_FAILED;
2668 }
2669
2670 memset(&logo_pyld, 0, sizeof(struct els_logo_payload));
2671
2672 elsio->u.els_logo.els_cmd = els_opcode;
2673 logo_pyld.opcode = els_opcode;
2674 logo_pyld.s_id[0] = vha->d_id.b.al_pa;
2675 logo_pyld.s_id[1] = vha->d_id.b.area;
2676 logo_pyld.s_id[2] = vha->d_id.b.domain;
2677 host_to_fcp_swap(logo_pyld.s_id, sizeof(uint32_t));
2678 memcpy(&logo_pyld.wwpn, vha->port_name, WWN_SIZE);
2679
2680 memcpy(elsio->u.els_logo.els_logo_pyld, &logo_pyld,
2681 sizeof(struct els_logo_payload));
2682
2683 rval = qla2x00_start_sp(sp);
2684 if (rval != QLA_SUCCESS) {
2685 sp->free(sp);
2686 return QLA_FUNCTION_FAILED;
2687 }
2688
2689 ql_dbg(ql_dbg_io, vha, 0x3074,
2690 "%s LOGO sent, hdl=%x, loopid=%x, portid=%02x%02x%02x.\n",
2691 sp->name, sp->handle, fcport->loop_id, fcport->d_id.b.domain,
2692 fcport->d_id.b.area, fcport->d_id.b.al_pa);
2693
2694 wait_for_completion(&elsio->u.els_logo.comp);
2695
2696 sp->free(sp);
2697 return rval;
2698 }
2699
2700 static void
2701 qla24xx_els_logo_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
2702 {
2703 scsi_qla_host_t *vha = sp->vha;
2704 struct srb_iocb *elsio = &sp->u.iocb_cmd;
2705
2706 els_iocb->entry_type = ELS_IOCB_TYPE;
2707 els_iocb->entry_count = 1;
2708 els_iocb->sys_define = 0;
2709 els_iocb->entry_status = 0;
2710 els_iocb->handle = sp->handle;
2711 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2712 els_iocb->tx_dsd_count = 1;
2713 els_iocb->vp_index = vha->vp_idx;
2714 els_iocb->sof_type = EST_SOFI3;
2715 els_iocb->rx_dsd_count = 0;
2716 els_iocb->opcode = elsio->u.els_logo.els_cmd;
2717
2718 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2719 els_iocb->port_id[1] = sp->fcport->d_id.b.area;
2720 els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2721 els_iocb->s_id[0] = vha->d_id.b.al_pa;
2722 els_iocb->s_id[1] = vha->d_id.b.area;
2723 els_iocb->s_id[2] = vha->d_id.b.domain;
2724 els_iocb->control_flags = 0;
2725
2726 if (elsio->u.els_logo.els_cmd == ELS_DCMD_PLOGI) {
2727 els_iocb->tx_byte_count = els_iocb->tx_len =
2728 sizeof(struct els_plogi_payload);
2729 els_iocb->tx_address[0] =
2730 cpu_to_le32(LSD(elsio->u.els_plogi.els_plogi_pyld_dma));
2731 els_iocb->tx_address[1] =
2732 cpu_to_le32(MSD(elsio->u.els_plogi.els_plogi_pyld_dma));
2733
2734 els_iocb->rx_dsd_count = 1;
2735 els_iocb->rx_byte_count = els_iocb->rx_len =
2736 sizeof(struct els_plogi_payload);
2737 els_iocb->rx_address[0] =
2738 cpu_to_le32(LSD(elsio->u.els_plogi.els_resp_pyld_dma));
2739 els_iocb->rx_address[1] =
2740 cpu_to_le32(MSD(elsio->u.els_plogi.els_resp_pyld_dma));
2741
2742 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x3073,
2743 "PLOGI ELS IOCB:\n");
2744 ql_dump_buffer(ql_log_info, vha, 0x0109,
2745 (uint8_t *)els_iocb, 0x70);
2746 } else {
2747 els_iocb->tx_byte_count = sizeof(struct els_logo_payload);
2748 els_iocb->tx_address[0] =
2749 cpu_to_le32(LSD(elsio->u.els_logo.els_logo_pyld_dma));
2750 els_iocb->tx_address[1] =
2751 cpu_to_le32(MSD(elsio->u.els_logo.els_logo_pyld_dma));
2752 els_iocb->tx_len = cpu_to_le32(sizeof(struct els_logo_payload));
2753
2754 els_iocb->rx_byte_count = 0;
2755 els_iocb->rx_address[0] = 0;
2756 els_iocb->rx_address[1] = 0;
2757 els_iocb->rx_len = 0;
2758 }
2759
2760 sp->vha->qla_stats.control_requests++;
2761 }
2762
2763 static void
2764 qla2x00_els_dcmd2_iocb_timeout(void *data)
2765 {
2766 srb_t *sp = data;
2767 fc_port_t *fcport = sp->fcport;
2768 struct scsi_qla_host *vha = sp->vha;
2769 struct qla_hw_data *ha = vha->hw;
2770 unsigned long flags = 0;
2771 int res;
2772
2773 ql_dbg(ql_dbg_io + ql_dbg_disc, vha, 0x3069,
2774 "%s hdl=%x ELS Timeout, %8phC portid=%06x\n",
2775 sp->name, sp->handle, fcport->port_name, fcport->d_id.b24);
2776
2777 /* Abort the exchange */
2778 spin_lock_irqsave(&ha->hardware_lock, flags);
2779 res = ha->isp_ops->abort_command(sp);
2780 ql_dbg(ql_dbg_io, vha, 0x3070,
2781 "mbx abort_command %s\n",
2782 (res == QLA_SUCCESS) ? "successful" : "failed");
2783 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2784
2785 sp->done(sp, QLA_FUNCTION_TIMEOUT);
2786 }
2787
2788 static void
2789 qla2x00_els_dcmd2_sp_done(void *ptr, int res)
2790 {
2791 srb_t *sp = ptr;
2792 fc_port_t *fcport = sp->fcport;
2793 struct srb_iocb *lio = &sp->u.iocb_cmd;
2794 struct scsi_qla_host *vha = sp->vha;
2795 struct event_arg ea;
2796 struct qla_work_evt *e;
2797
2798 ql_dbg(ql_dbg_disc, vha, 0x3072,
2799 "%s ELS done rc %d hdl=%x, portid=%06x %8phC\n",
2800 sp->name, res, sp->handle, fcport->d_id.b24, fcport->port_name);
2801
2802 fcport->flags &= ~(FCF_ASYNC_SENT|FCF_ASYNC_ACTIVE);
2803 del_timer(&sp->u.iocb_cmd.timer);
2804
2805 if (sp->flags & SRB_WAKEUP_ON_COMP)
2806 complete(&lio->u.els_plogi.comp);
2807 else {
2808 if (res) {
2809 set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
2810 } else {
2811 memset(&ea, 0, sizeof(ea));
2812 ea.fcport = fcport;
2813 ea.rc = res;
2814 ea.event = FCME_ELS_PLOGI_DONE;
2815 qla2x00_fcport_event_handler(vha, &ea);
2816 }
2817
2818 e = qla2x00_alloc_work(vha, QLA_EVT_UNMAP);
2819 if (!e) {
2820 struct srb_iocb *elsio = &sp->u.iocb_cmd;
2821
2822 if (elsio->u.els_plogi.els_plogi_pyld)
2823 dma_free_coherent(&sp->vha->hw->pdev->dev,
2824 elsio->u.els_plogi.tx_size,
2825 elsio->u.els_plogi.els_plogi_pyld,
2826 elsio->u.els_plogi.els_plogi_pyld_dma);
2827
2828 if (elsio->u.els_plogi.els_resp_pyld)
2829 dma_free_coherent(&sp->vha->hw->pdev->dev,
2830 elsio->u.els_plogi.rx_size,
2831 elsio->u.els_plogi.els_resp_pyld,
2832 elsio->u.els_plogi.els_resp_pyld_dma);
2833 sp->free(sp);
2834 return;
2835 }
2836 e->u.iosb.sp = sp;
2837 qla2x00_post_work(vha, e);
2838 }
2839 }
2840
2841 int
2842 qla24xx_els_dcmd2_iocb(scsi_qla_host_t *vha, int els_opcode,
2843 fc_port_t *fcport, bool wait)
2844 {
2845 srb_t *sp;
2846 struct srb_iocb *elsio = NULL;
2847 struct qla_hw_data *ha = vha->hw;
2848 int rval = QLA_SUCCESS;
2849 void *ptr, *resp_ptr;
2850
2851 /* Alloc SRB structure */
2852 sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL);
2853 if (!sp) {
2854 ql_log(ql_log_info, vha, 0x70e6,
2855 "SRB allocation failed\n");
2856 return -ENOMEM;
2857 }
2858
2859 elsio = &sp->u.iocb_cmd;
2860 ql_dbg(ql_dbg_io, vha, 0x3073,
2861 "Enter: PLOGI portid=%06x\n", fcport->d_id.b24);
2862
2863 fcport->flags |= FCF_ASYNC_SENT;
2864 sp->type = SRB_ELS_DCMD;
2865 sp->name = "ELS_DCMD";
2866 sp->fcport = fcport;
2867
2868 elsio->timeout = qla2x00_els_dcmd2_iocb_timeout;
2869 init_completion(&elsio->u.els_plogi.comp);
2870 if (wait)
2871 sp->flags = SRB_WAKEUP_ON_COMP;
2872
2873 qla2x00_init_timer(sp, ELS_DCMD_TIMEOUT + 2);
2874
2875 sp->done = qla2x00_els_dcmd2_sp_done;
2876 elsio->u.els_plogi.tx_size = elsio->u.els_plogi.rx_size = DMA_POOL_SIZE;
2877
2878 ptr = elsio->u.els_plogi.els_plogi_pyld =
2879 dma_alloc_coherent(&ha->pdev->dev, DMA_POOL_SIZE,
2880 &elsio->u.els_plogi.els_plogi_pyld_dma, GFP_KERNEL);
2881
2882 if (!elsio->u.els_plogi.els_plogi_pyld) {
2883 rval = QLA_FUNCTION_FAILED;
2884 goto out;
2885 }
2886
2887 resp_ptr = elsio->u.els_plogi.els_resp_pyld =
2888 dma_alloc_coherent(&ha->pdev->dev, DMA_POOL_SIZE,
2889 &elsio->u.els_plogi.els_resp_pyld_dma, GFP_KERNEL);
2890
2891 if (!elsio->u.els_plogi.els_resp_pyld) {
2892 rval = QLA_FUNCTION_FAILED;
2893 goto out;
2894 }
2895
2896 ql_dbg(ql_dbg_io, vha, 0x3073, "PLOGI %p %p\n", ptr, resp_ptr);
2897
2898 memset(ptr, 0, sizeof(struct els_plogi_payload));
2899 memset(resp_ptr, 0, sizeof(struct els_plogi_payload));
2900 memcpy(elsio->u.els_plogi.els_plogi_pyld->data,
2901 &ha->plogi_els_payld.data,
2902 sizeof(elsio->u.els_plogi.els_plogi_pyld->data));
2903
2904 elsio->u.els_plogi.els_cmd = els_opcode;
2905 elsio->u.els_plogi.els_plogi_pyld->opcode = els_opcode;
2906
2907 ql_dbg(ql_dbg_disc + ql_dbg_buffer, vha, 0x3073, "PLOGI buffer:\n");
2908 ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x0109,
2909 (uint8_t *)elsio->u.els_plogi.els_plogi_pyld, 0x70);
2910
2911 rval = qla2x00_start_sp(sp);
2912 if (rval != QLA_SUCCESS) {
2913 rval = QLA_FUNCTION_FAILED;
2914 } else {
2915 ql_dbg(ql_dbg_disc, vha, 0x3074,
2916 "%s PLOGI sent, hdl=%x, loopid=%x, to port_id %06x from port_id %06x\n",
2917 sp->name, sp->handle, fcport->loop_id,
2918 fcport->d_id.b24, vha->d_id.b24);
2919 }
2920
2921 if (wait) {
2922 wait_for_completion(&elsio->u.els_plogi.comp);
2923
2924 if (elsio->u.els_plogi.comp_status != CS_COMPLETE)
2925 rval = QLA_FUNCTION_FAILED;
2926 } else {
2927 goto done;
2928 }
2929
2930 out:
2931 fcport->flags &= ~(FCF_ASYNC_SENT);
2932 if (elsio->u.els_plogi.els_plogi_pyld)
2933 dma_free_coherent(&sp->vha->hw->pdev->dev,
2934 elsio->u.els_plogi.tx_size,
2935 elsio->u.els_plogi.els_plogi_pyld,
2936 elsio->u.els_plogi.els_plogi_pyld_dma);
2937
2938 if (elsio->u.els_plogi.els_resp_pyld)
2939 dma_free_coherent(&sp->vha->hw->pdev->dev,
2940 elsio->u.els_plogi.rx_size,
2941 elsio->u.els_plogi.els_resp_pyld,
2942 elsio->u.els_plogi.els_resp_pyld_dma);
2943
2944 sp->free(sp);
2945 done:
2946 return rval;
2947 }
2948
2949 static void
2950 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
2951 {
2952 struct bsg_job *bsg_job = sp->u.bsg_job;
2953 struct fc_bsg_request *bsg_request = bsg_job->request;
2954
2955 els_iocb->entry_type = ELS_IOCB_TYPE;
2956 els_iocb->entry_count = 1;
2957 els_iocb->sys_define = 0;
2958 els_iocb->entry_status = 0;
2959 els_iocb->handle = sp->handle;
2960 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2961 els_iocb->tx_dsd_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
2962 els_iocb->vp_index = sp->vha->vp_idx;
2963 els_iocb->sof_type = EST_SOFI3;
2964 els_iocb->rx_dsd_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2965
2966 els_iocb->opcode =
2967 sp->type == SRB_ELS_CMD_RPT ?
2968 bsg_request->rqst_data.r_els.els_code :
2969 bsg_request->rqst_data.h_els.command_code;
2970 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2971 els_iocb->port_id[1] = sp->fcport->d_id.b.area;
2972 els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2973 els_iocb->control_flags = 0;
2974 els_iocb->rx_byte_count =
2975 cpu_to_le32(bsg_job->reply_payload.payload_len);
2976 els_iocb->tx_byte_count =
2977 cpu_to_le32(bsg_job->request_payload.payload_len);
2978
2979 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address
2980 (bsg_job->request_payload.sg_list)));
2981 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address
2982 (bsg_job->request_payload.sg_list)));
2983 els_iocb->tx_len = cpu_to_le32(sg_dma_len
2984 (bsg_job->request_payload.sg_list));
2985
2986 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address
2987 (bsg_job->reply_payload.sg_list)));
2988 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address
2989 (bsg_job->reply_payload.sg_list)));
2990 els_iocb->rx_len = cpu_to_le32(sg_dma_len
2991 (bsg_job->reply_payload.sg_list));
2992
2993 sp->vha->qla_stats.control_requests++;
2994 }
2995
2996 static void
2997 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb)
2998 {
2999 uint16_t avail_dsds;
3000 uint32_t *cur_dsd;
3001 struct scatterlist *sg;
3002 int index;
3003 uint16_t tot_dsds;
3004 scsi_qla_host_t *vha = sp->vha;
3005 struct qla_hw_data *ha = vha->hw;
3006 struct bsg_job *bsg_job = sp->u.bsg_job;
3007 int loop_iterartion = 0;
3008 int entry_count = 1;
3009
3010 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t));
3011 ct_iocb->entry_type = CT_IOCB_TYPE;
3012 ct_iocb->entry_status = 0;
3013 ct_iocb->handle1 = sp->handle;
3014 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id);
3015 ct_iocb->status = cpu_to_le16(0);
3016 ct_iocb->control_flags = cpu_to_le16(0);
3017 ct_iocb->timeout = 0;
3018 ct_iocb->cmd_dsd_count =
3019 cpu_to_le16(bsg_job->request_payload.sg_cnt);
3020 ct_iocb->total_dsd_count =
3021 cpu_to_le16(bsg_job->request_payload.sg_cnt + 1);
3022 ct_iocb->req_bytecount =
3023 cpu_to_le32(bsg_job->request_payload.payload_len);
3024 ct_iocb->rsp_bytecount =
3025 cpu_to_le32(bsg_job->reply_payload.payload_len);
3026
3027 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address
3028 (bsg_job->request_payload.sg_list)));
3029 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address
3030 (bsg_job->request_payload.sg_list)));
3031 ct_iocb->dseg_req_length = ct_iocb->req_bytecount;
3032
3033 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address
3034 (bsg_job->reply_payload.sg_list)));
3035 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address
3036 (bsg_job->reply_payload.sg_list)));
3037 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount;
3038
3039 avail_dsds = 1;
3040 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address;
3041 index = 0;
3042 tot_dsds = bsg_job->reply_payload.sg_cnt;
3043
3044 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
3045 dma_addr_t sle_dma;
3046 cont_a64_entry_t *cont_pkt;
3047
3048 /* Allocate additional continuation packets? */
3049 if (avail_dsds == 0) {
3050 /*
3051 * Five DSDs are available in the Cont.
3052 * Type 1 IOCB.
3053 */
3054 cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
3055 vha->hw->req_q_map[0]);
3056 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
3057 avail_dsds = 5;
3058 entry_count++;
3059 }
3060
3061 sle_dma = sg_dma_address(sg);
3062 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
3063 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
3064 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
3065 loop_iterartion++;
3066 avail_dsds--;
3067 }
3068 ct_iocb->entry_count = entry_count;
3069
3070 sp->vha->qla_stats.control_requests++;
3071 }
3072
3073 static void
3074 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
3075 {
3076 uint16_t avail_dsds;
3077 uint32_t *cur_dsd;
3078 struct scatterlist *sg;
3079 int index;
3080 uint16_t cmd_dsds, rsp_dsds;
3081 scsi_qla_host_t *vha = sp->vha;
3082 struct qla_hw_data *ha = vha->hw;
3083 struct bsg_job *bsg_job = sp->u.bsg_job;
3084 int entry_count = 1;
3085 cont_a64_entry_t *cont_pkt = NULL;
3086
3087 ct_iocb->entry_type = CT_IOCB_TYPE;
3088 ct_iocb->entry_status = 0;
3089 ct_iocb->sys_define = 0;
3090 ct_iocb->handle = sp->handle;
3091
3092 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
3093 ct_iocb->vp_index = sp->vha->vp_idx;
3094 ct_iocb->comp_status = cpu_to_le16(0);
3095
3096 cmd_dsds = bsg_job->request_payload.sg_cnt;
3097 rsp_dsds = bsg_job->reply_payload.sg_cnt;
3098
3099 ct_iocb->cmd_dsd_count = cpu_to_le16(cmd_dsds);
3100 ct_iocb->timeout = 0;
3101 ct_iocb->rsp_dsd_count = cpu_to_le16(rsp_dsds);
3102 ct_iocb->cmd_byte_count =
3103 cpu_to_le32(bsg_job->request_payload.payload_len);
3104
3105 avail_dsds = 2;
3106 cur_dsd = (uint32_t *)ct_iocb->dseg_0_address;
3107 index = 0;
3108
3109 for_each_sg(bsg_job->request_payload.sg_list, sg, cmd_dsds, index) {
3110 dma_addr_t sle_dma;
3111
3112 /* Allocate additional continuation packets? */
3113 if (avail_dsds == 0) {
3114 /*
3115 * Five DSDs are available in the Cont.
3116 * Type 1 IOCB.
3117 */
3118 cont_pkt = qla2x00_prep_cont_type1_iocb(
3119 vha, ha->req_q_map[0]);
3120 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
3121 avail_dsds = 5;
3122 entry_count++;
3123 }
3124
3125 sle_dma = sg_dma_address(sg);
3126 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
3127 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
3128 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
3129 avail_dsds--;
3130 }
3131
3132 index = 0;
3133
3134 for_each_sg(bsg_job->reply_payload.sg_list, sg, rsp_dsds, index) {
3135 dma_addr_t sle_dma;
3136
3137 /* Allocate additional continuation packets? */
3138 if (avail_dsds == 0) {
3139 /*
3140 * Five DSDs are available in the Cont.
3141 * Type 1 IOCB.
3142 */
3143 cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
3144 ha->req_q_map[0]);
3145 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
3146 avail_dsds = 5;
3147 entry_count++;
3148 }
3149
3150 sle_dma = sg_dma_address(sg);
3151 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
3152 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
3153 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
3154 avail_dsds--;
3155 }
3156 ct_iocb->entry_count = entry_count;
3157 }
3158
3159 /*
3160 * qla82xx_start_scsi() - Send a SCSI command to the ISP
3161 * @sp: command to send to the ISP
3162 *
3163 * Returns non-zero if a failure occurred, else zero.
3164 */
3165 int
3166 qla82xx_start_scsi(srb_t *sp)
3167 {
3168 int nseg;
3169 unsigned long flags;
3170 struct scsi_cmnd *cmd;
3171 uint32_t *clr_ptr;
3172 uint32_t index;
3173 uint32_t handle;
3174 uint16_t cnt;
3175 uint16_t req_cnt;
3176 uint16_t tot_dsds;
3177 struct device_reg_82xx __iomem *reg;
3178 uint32_t dbval;
3179 uint32_t *fcp_dl;
3180 uint8_t additional_cdb_len;
3181 struct ct6_dsd *ctx;
3182 struct scsi_qla_host *vha = sp->vha;
3183 struct qla_hw_data *ha = vha->hw;
3184 struct req_que *req = NULL;
3185 struct rsp_que *rsp = NULL;
3186
3187 /* Setup device pointers. */
3188 reg = &ha->iobase->isp82;
3189 cmd = GET_CMD_SP(sp);
3190 req = vha->req;
3191 rsp = ha->rsp_q_map[0];
3192
3193 /* So we know we haven't pci_map'ed anything yet */
3194 tot_dsds = 0;
3195
3196 dbval = 0x04 | (ha->portnum << 5);
3197
3198 /* Send marker if required */
3199 if (vha->marker_needed != 0) {
3200 if (qla2x00_marker(vha, ha->base_qpair,
3201 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) {
3202 ql_log(ql_log_warn, vha, 0x300c,
3203 "qla2x00_marker failed for cmd=%p.\n", cmd);
3204 return QLA_FUNCTION_FAILED;
3205 }
3206 vha->marker_needed = 0;
3207 }
3208
3209 /* Acquire ring specific lock */
3210 spin_lock_irqsave(&ha->hardware_lock, flags);
3211
3212 /* Check for room in outstanding command list. */
3213 handle = req->current_outstanding_cmd;
3214 for (index = 1; index < req->num_outstanding_cmds; index++) {
3215 handle++;
3216 if (handle == req->num_outstanding_cmds)
3217 handle = 1;
3218 if (!req->outstanding_cmds[handle])
3219 break;
3220 }
3221 if (index == req->num_outstanding_cmds)
3222 goto queuing_error;
3223
3224 /* Map the sg table so we have an accurate count of sg entries needed */
3225 if (scsi_sg_count(cmd)) {
3226 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
3227 scsi_sg_count(cmd), cmd->sc_data_direction);
3228 if (unlikely(!nseg))
3229 goto queuing_error;
3230 } else
3231 nseg = 0;
3232
3233 tot_dsds = nseg;
3234
3235 if (tot_dsds > ql2xshiftctondsd) {
3236 struct cmd_type_6 *cmd_pkt;
3237 uint16_t more_dsd_lists = 0;
3238 struct dsd_dma *dsd_ptr;
3239 uint16_t i;
3240
3241 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds);
3242 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) {
3243 ql_dbg(ql_dbg_io, vha, 0x300d,
3244 "Num of DSD list %d is than %d for cmd=%p.\n",
3245 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN,
3246 cmd);
3247 goto queuing_error;
3248 }
3249
3250 if (more_dsd_lists <= ha->gbl_dsd_avail)
3251 goto sufficient_dsds;
3252 else
3253 more_dsd_lists -= ha->gbl_dsd_avail;
3254
3255 for (i = 0; i < more_dsd_lists; i++) {
3256 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
3257 if (!dsd_ptr) {
3258 ql_log(ql_log_fatal, vha, 0x300e,
3259 "Failed to allocate memory for dsd_dma "
3260 "for cmd=%p.\n", cmd);
3261 goto queuing_error;
3262 }
3263
3264 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool,
3265 GFP_ATOMIC, &dsd_ptr->dsd_list_dma);
3266 if (!dsd_ptr->dsd_addr) {
3267 kfree(dsd_ptr);
3268 ql_log(ql_log_fatal, vha, 0x300f,
3269 "Failed to allocate memory for dsd_addr "
3270 "for cmd=%p.\n", cmd);
3271 goto queuing_error;
3272 }
3273 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list);
3274 ha->gbl_dsd_avail++;
3275 }
3276
3277 sufficient_dsds:
3278 req_cnt = 1;
3279
3280 if (req->cnt < (req_cnt + 2)) {
3281 cnt = (uint16_t)RD_REG_DWORD_RELAXED(
3282 &reg->req_q_out[0]);
3283 if (req->ring_index < cnt)
3284 req->cnt = cnt - req->ring_index;
3285 else
3286 req->cnt = req->length -
3287 (req->ring_index - cnt);
3288 if (req->cnt < (req_cnt + 2))
3289 goto queuing_error;
3290 }
3291
3292 ctx = sp->u.scmd.ctx =
3293 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC);
3294 if (!ctx) {
3295 ql_log(ql_log_fatal, vha, 0x3010,
3296 "Failed to allocate ctx for cmd=%p.\n", cmd);
3297 goto queuing_error;
3298 }
3299
3300 memset(ctx, 0, sizeof(struct ct6_dsd));
3301 ctx->fcp_cmnd = dma_pool_zalloc(ha->fcp_cmnd_dma_pool,
3302 GFP_ATOMIC, &ctx->fcp_cmnd_dma);
3303 if (!ctx->fcp_cmnd) {
3304 ql_log(ql_log_fatal, vha, 0x3011,
3305 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd);
3306 goto queuing_error;
3307 }
3308
3309 /* Initialize the DSD list and dma handle */
3310 INIT_LIST_HEAD(&ctx->dsd_list);
3311 ctx->dsd_use_cnt = 0;
3312
3313 if (cmd->cmd_len > 16) {
3314 additional_cdb_len = cmd->cmd_len - 16;
3315 if ((cmd->cmd_len % 4) != 0) {
3316 /* SCSI command bigger than 16 bytes must be
3317 * multiple of 4
3318 */
3319 ql_log(ql_log_warn, vha, 0x3012,
3320 "scsi cmd len %d not multiple of 4 "
3321 "for cmd=%p.\n", cmd->cmd_len, cmd);
3322 goto queuing_error_fcp_cmnd;
3323 }
3324 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4;
3325 } else {
3326 additional_cdb_len = 0;
3327 ctx->fcp_cmnd_len = 12 + 16 + 4;
3328 }
3329
3330 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr;
3331 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
3332
3333 /* Zero out remaining portion of packet. */
3334 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
3335 clr_ptr = (uint32_t *)cmd_pkt + 2;
3336 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
3337 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
3338
3339 /* Set NPORT-ID and LUN number*/
3340 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
3341 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
3342 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
3343 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
3344 cmd_pkt->vp_index = sp->vha->vp_idx;
3345
3346 /* Build IOCB segments */
3347 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds))
3348 goto queuing_error_fcp_cmnd;
3349
3350 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
3351 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
3352
3353 /* build FCP_CMND IU */
3354 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun);
3355 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len;
3356
3357 if (cmd->sc_data_direction == DMA_TO_DEVICE)
3358 ctx->fcp_cmnd->additional_cdb_len |= 1;
3359 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
3360 ctx->fcp_cmnd->additional_cdb_len |= 2;
3361
3362 /* Populate the FCP_PRIO. */
3363 if (ha->flags.fcp_prio_enabled)
3364 ctx->fcp_cmnd->task_attribute |=
3365 sp->fcport->fcp_prio << 3;
3366
3367 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
3368
3369 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 +
3370 additional_cdb_len);
3371 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd));
3372
3373 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len);
3374 cmd_pkt->fcp_cmnd_dseg_address[0] =
3375 cpu_to_le32(LSD(ctx->fcp_cmnd_dma));
3376 cmd_pkt->fcp_cmnd_dseg_address[1] =
3377 cpu_to_le32(MSD(ctx->fcp_cmnd_dma));
3378
3379 sp->flags |= SRB_FCP_CMND_DMA_VALID;
3380 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
3381 /* Set total data segment count. */
3382 cmd_pkt->entry_count = (uint8_t)req_cnt;
3383 /* Specify response queue number where
3384 * completion should happen
3385 */
3386 cmd_pkt->entry_status = (uint8_t) rsp->id;
3387 } else {
3388 struct cmd_type_7 *cmd_pkt;
3389 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
3390 if (req->cnt < (req_cnt + 2)) {
3391 cnt = (uint16_t)RD_REG_DWORD_RELAXED(
3392 &reg->req_q_out[0]);
3393 if (req->ring_index < cnt)
3394 req->cnt = cnt - req->ring_index;
3395 else
3396 req->cnt = req->length -
3397 (req->ring_index - cnt);
3398 }
3399 if (req->cnt < (req_cnt + 2))
3400 goto queuing_error;
3401
3402 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
3403 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
3404
3405 /* Zero out remaining portion of packet. */
3406 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
3407 clr_ptr = (uint32_t *)cmd_pkt + 2;
3408 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
3409 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
3410
3411 /* Set NPORT-ID and LUN number*/
3412 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
3413 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
3414 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
3415 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
3416 cmd_pkt->vp_index = sp->vha->vp_idx;
3417
3418 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
3419 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun,
3420 sizeof(cmd_pkt->lun));
3421
3422 /* Populate the FCP_PRIO. */
3423 if (ha->flags.fcp_prio_enabled)
3424 cmd_pkt->task |= sp->fcport->fcp_prio << 3;
3425
3426 /* Load SCSI command packet. */
3427 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
3428 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
3429
3430 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
3431
3432 /* Build IOCB segments */
3433 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds, req);
3434
3435 /* Set total data segment count. */
3436 cmd_pkt->entry_count = (uint8_t)req_cnt;
3437 /* Specify response queue number where
3438 * completion should happen.
3439 */
3440 cmd_pkt->entry_status = (uint8_t) rsp->id;
3441
3442 }
3443 /* Build command packet. */
3444 req->current_outstanding_cmd = handle;
3445 req->outstanding_cmds[handle] = sp;
3446 sp->handle = handle;
3447 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
3448 req->cnt -= req_cnt;
3449 wmb();
3450
3451 /* Adjust ring index. */
3452 req->ring_index++;
3453 if (req->ring_index == req->length) {
3454 req->ring_index = 0;
3455 req->ring_ptr = req->ring;
3456 } else
3457 req->ring_ptr++;
3458
3459 sp->flags |= SRB_DMA_VALID;
3460
3461 /* Set chip new ring index. */
3462 /* write, read and verify logic */
3463 dbval = dbval | (req->id << 8) | (req->ring_index << 16);
3464 if (ql2xdbwr)
3465 qla82xx_wr_32(ha, (uintptr_t __force)ha->nxdb_wr_ptr, dbval);
3466 else {
3467 WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
3468 wmb();
3469 while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
3470 WRT_REG_DWORD(ha->nxdb_wr_ptr, dbval);
3471 wmb();
3472 }
3473 }
3474
3475 /* Manage unprocessed RIO/ZIO commands in response queue. */
3476 if (vha->flags.process_response_queue &&
3477 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
3478 qla24xx_process_response_queue(vha, rsp);
3479
3480 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3481 return QLA_SUCCESS;
3482
3483 queuing_error_fcp_cmnd:
3484 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma);
3485 queuing_error:
3486 if (tot_dsds)
3487 scsi_dma_unmap(cmd);
3488
3489 if (sp->u.scmd.ctx) {
3490 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool);
3491 sp->u.scmd.ctx = NULL;
3492 }
3493 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3494
3495 return QLA_FUNCTION_FAILED;
3496 }
3497
3498 static void
3499 qla24xx_abort_iocb(srb_t *sp, struct abort_entry_24xx *abt_iocb)
3500 {
3501 struct srb_iocb *aio = &sp->u.iocb_cmd;
3502 scsi_qla_host_t *vha = sp->vha;
3503 struct req_que *req = sp->qpair->req;
3504
3505 memset(abt_iocb, 0, sizeof(struct abort_entry_24xx));
3506 abt_iocb->entry_type = ABORT_IOCB_TYPE;
3507 abt_iocb->entry_count = 1;
3508 abt_iocb->handle = cpu_to_le32(MAKE_HANDLE(req->id, sp->handle));
3509 if (sp->fcport) {
3510 abt_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
3511 abt_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
3512 abt_iocb->port_id[1] = sp->fcport->d_id.b.area;
3513 abt_iocb->port_id[2] = sp->fcport->d_id.b.domain;
3514 }
3515 abt_iocb->handle_to_abort =
3516 cpu_to_le32(MAKE_HANDLE(aio->u.abt.req_que_no,
3517 aio->u.abt.cmd_hndl));
3518 abt_iocb->vp_index = vha->vp_idx;
3519 abt_iocb->req_que_no = cpu_to_le16(aio->u.abt.req_que_no);
3520 /* Send the command to the firmware */
3521 wmb();
3522 }
3523
3524 static void
3525 qla2x00_mb_iocb(srb_t *sp, struct mbx_24xx_entry *mbx)
3526 {
3527 int i, sz;
3528
3529 mbx->entry_type = MBX_IOCB_TYPE;
3530 mbx->handle = sp->handle;
3531 sz = min(ARRAY_SIZE(mbx->mb), ARRAY_SIZE(sp->u.iocb_cmd.u.mbx.out_mb));
3532
3533 for (i = 0; i < sz; i++)
3534 mbx->mb[i] = cpu_to_le16(sp->u.iocb_cmd.u.mbx.out_mb[i]);
3535 }
3536
3537 static void
3538 qla2x00_ctpthru_cmd_iocb(srb_t *sp, struct ct_entry_24xx *ct_pkt)
3539 {
3540 sp->u.iocb_cmd.u.ctarg.iocb = ct_pkt;
3541 qla24xx_prep_ms_iocb(sp->vha, &sp->u.iocb_cmd.u.ctarg);
3542 ct_pkt->handle = sp->handle;
3543 }
3544
3545 static void qla2x00_send_notify_ack_iocb(srb_t *sp,
3546 struct nack_to_isp *nack)
3547 {
3548 struct imm_ntfy_from_isp *ntfy = sp->u.iocb_cmd.u.nack.ntfy;
3549
3550 nack->entry_type = NOTIFY_ACK_TYPE;
3551 nack->entry_count = 1;
3552 nack->ox_id = ntfy->ox_id;
3553
3554 nack->u.isp24.handle = sp->handle;
3555 nack->u.isp24.nport_handle = ntfy->u.isp24.nport_handle;
3556 if (le16_to_cpu(ntfy->u.isp24.status) == IMM_NTFY_ELS) {
3557 nack->u.isp24.flags = ntfy->u.isp24.flags &
3558 cpu_to_le32(NOTIFY24XX_FLAGS_PUREX_IOCB);
3559 }
3560 nack->u.isp24.srr_rx_id = ntfy->u.isp24.srr_rx_id;
3561 nack->u.isp24.status = ntfy->u.isp24.status;
3562 nack->u.isp24.status_subcode = ntfy->u.isp24.status_subcode;
3563 nack->u.isp24.fw_handle = ntfy->u.isp24.fw_handle;
3564 nack->u.isp24.exchange_address = ntfy->u.isp24.exchange_address;
3565 nack->u.isp24.srr_rel_offs = ntfy->u.isp24.srr_rel_offs;
3566 nack->u.isp24.srr_ui = ntfy->u.isp24.srr_ui;
3567 nack->u.isp24.srr_flags = 0;
3568 nack->u.isp24.srr_reject_code = 0;
3569 nack->u.isp24.srr_reject_code_expl = 0;
3570 nack->u.isp24.vp_index = ntfy->u.isp24.vp_index;
3571 }
3572
3573 /*
3574 * Build NVME LS request
3575 */
3576 static int
3577 qla_nvme_ls(srb_t *sp, struct pt_ls4_request *cmd_pkt)
3578 {
3579 struct srb_iocb *nvme;
3580 int rval = QLA_SUCCESS;
3581
3582 nvme = &sp->u.iocb_cmd;
3583 cmd_pkt->entry_type = PT_LS4_REQUEST;
3584 cmd_pkt->entry_count = 1;
3585 cmd_pkt->control_flags = CF_LS4_ORIGINATOR << CF_LS4_SHIFT;
3586
3587 cmd_pkt->timeout = cpu_to_le16(nvme->u.nvme.timeout_sec);
3588 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
3589 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
3590
3591 cmd_pkt->tx_dseg_count = 1;
3592 cmd_pkt->tx_byte_count = nvme->u.nvme.cmd_len;
3593 cmd_pkt->dseg0_len = nvme->u.nvme.cmd_len;
3594 cmd_pkt->dseg0_address[0] = cpu_to_le32(LSD(nvme->u.nvme.cmd_dma));
3595 cmd_pkt->dseg0_address[1] = cpu_to_le32(MSD(nvme->u.nvme.cmd_dma));
3596
3597 cmd_pkt->rx_dseg_count = 1;
3598 cmd_pkt->rx_byte_count = nvme->u.nvme.rsp_len;
3599 cmd_pkt->dseg1_len = nvme->u.nvme.rsp_len;
3600 cmd_pkt->dseg1_address[0] = cpu_to_le32(LSD(nvme->u.nvme.rsp_dma));
3601 cmd_pkt->dseg1_address[1] = cpu_to_le32(MSD(nvme->u.nvme.rsp_dma));
3602
3603 return rval;
3604 }
3605
3606 static void
3607 qla25xx_ctrlvp_iocb(srb_t *sp, struct vp_ctrl_entry_24xx *vce)
3608 {
3609 int map, pos;
3610
3611 vce->entry_type = VP_CTRL_IOCB_TYPE;
3612 vce->handle = sp->handle;
3613 vce->entry_count = 1;
3614 vce->command = cpu_to_le16(sp->u.iocb_cmd.u.ctrlvp.cmd);
3615 vce->vp_count = cpu_to_le16(1);
3616
3617 /*
3618 * index map in firmware starts with 1; decrement index
3619 * this is ok as we never use index 0
3620 */
3621 map = (sp->u.iocb_cmd.u.ctrlvp.vp_index - 1) / 8;
3622 pos = (sp->u.iocb_cmd.u.ctrlvp.vp_index - 1) & 7;
3623 vce->vp_idx_map[map] |= 1 << pos;
3624 }
3625
3626 static void
3627 qla24xx_prlo_iocb(srb_t *sp, struct logio_entry_24xx *logio)
3628 {
3629 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
3630 logio->control_flags =
3631 cpu_to_le16(LCF_COMMAND_PRLO|LCF_IMPL_PRLO);
3632
3633 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
3634 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
3635 logio->port_id[1] = sp->fcport->d_id.b.area;
3636 logio->port_id[2] = sp->fcport->d_id.b.domain;
3637 logio->vp_index = sp->fcport->vha->vp_idx;
3638 }
3639
3640 int
3641 qla2x00_start_sp(srb_t *sp)
3642 {
3643 int rval = QLA_SUCCESS;
3644 scsi_qla_host_t *vha = sp->vha;
3645 struct qla_hw_data *ha = vha->hw;
3646 struct qla_qpair *qp = sp->qpair;
3647 void *pkt;
3648 unsigned long flags;
3649
3650 spin_lock_irqsave(qp->qp_lock_ptr, flags);
3651 pkt = __qla2x00_alloc_iocbs(sp->qpair, sp);
3652 if (!pkt) {
3653 rval = EAGAIN;
3654 ql_log(ql_log_warn, vha, 0x700c,
3655 "qla2x00_alloc_iocbs failed.\n");
3656 goto done;
3657 }
3658
3659 switch (sp->type) {
3660 case SRB_LOGIN_CMD:
3661 IS_FWI2_CAPABLE(ha) ?
3662 qla24xx_login_iocb(sp, pkt) :
3663 qla2x00_login_iocb(sp, pkt);
3664 break;
3665 case SRB_PRLI_CMD:
3666 qla24xx_prli_iocb(sp, pkt);
3667 break;
3668 case SRB_LOGOUT_CMD:
3669 IS_FWI2_CAPABLE(ha) ?
3670 qla24xx_logout_iocb(sp, pkt) :
3671 qla2x00_logout_iocb(sp, pkt);
3672 break;
3673 case SRB_ELS_CMD_RPT:
3674 case SRB_ELS_CMD_HST:
3675 qla24xx_els_iocb(sp, pkt);
3676 break;
3677 case SRB_CT_CMD:
3678 IS_FWI2_CAPABLE(ha) ?
3679 qla24xx_ct_iocb(sp, pkt) :
3680 qla2x00_ct_iocb(sp, pkt);
3681 break;
3682 case SRB_ADISC_CMD:
3683 IS_FWI2_CAPABLE(ha) ?
3684 qla24xx_adisc_iocb(sp, pkt) :
3685 qla2x00_adisc_iocb(sp, pkt);
3686 break;
3687 case SRB_TM_CMD:
3688 IS_QLAFX00(ha) ?
3689 qlafx00_tm_iocb(sp, pkt) :
3690 qla24xx_tm_iocb(sp, pkt);
3691 break;
3692 case SRB_FXIOCB_DCMD:
3693 case SRB_FXIOCB_BCMD:
3694 qlafx00_fxdisc_iocb(sp, pkt);
3695 break;
3696 case SRB_NVME_LS:
3697 qla_nvme_ls(sp, pkt);
3698 break;
3699 case SRB_ABT_CMD:
3700 IS_QLAFX00(ha) ?
3701 qlafx00_abort_iocb(sp, pkt) :
3702 qla24xx_abort_iocb(sp, pkt);
3703 break;
3704 case SRB_ELS_DCMD:
3705 qla24xx_els_logo_iocb(sp, pkt);
3706 break;
3707 case SRB_CT_PTHRU_CMD:
3708 qla2x00_ctpthru_cmd_iocb(sp, pkt);
3709 break;
3710 case SRB_MB_IOCB:
3711 qla2x00_mb_iocb(sp, pkt);
3712 break;
3713 case SRB_NACK_PLOGI:
3714 case SRB_NACK_PRLI:
3715 case SRB_NACK_LOGO:
3716 qla2x00_send_notify_ack_iocb(sp, pkt);
3717 break;
3718 case SRB_CTRL_VP:
3719 qla25xx_ctrlvp_iocb(sp, pkt);
3720 break;
3721 case SRB_PRLO_CMD:
3722 qla24xx_prlo_iocb(sp, pkt);
3723 break;
3724 default:
3725 break;
3726 }
3727
3728 wmb();
3729 qla2x00_start_iocbs(vha, qp->req);
3730 done:
3731 spin_unlock_irqrestore(qp->qp_lock_ptr, flags);
3732 return rval;
3733 }
3734
3735 static void
3736 qla25xx_build_bidir_iocb(srb_t *sp, struct scsi_qla_host *vha,
3737 struct cmd_bidir *cmd_pkt, uint32_t tot_dsds)
3738 {
3739 uint16_t avail_dsds;
3740 uint32_t *cur_dsd;
3741 uint32_t req_data_len = 0;
3742 uint32_t rsp_data_len = 0;
3743 struct scatterlist *sg;
3744 int index;
3745 int entry_count = 1;
3746 struct bsg_job *bsg_job = sp->u.bsg_job;
3747
3748 /*Update entry type to indicate bidir command */
3749 *((uint32_t *)(&cmd_pkt->entry_type)) =
3750 cpu_to_le32(COMMAND_BIDIRECTIONAL);
3751
3752 /* Set the transfer direction, in this set both flags
3753 * Also set the BD_WRAP_BACK flag, firmware will take care
3754 * assigning DID=SID for outgoing pkts.
3755 */
3756 cmd_pkt->wr_dseg_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
3757 cmd_pkt->rd_dseg_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
3758 cmd_pkt->control_flags = cpu_to_le16(BD_WRITE_DATA | BD_READ_DATA |
3759 BD_WRAP_BACK);
3760
3761 req_data_len = rsp_data_len = bsg_job->request_payload.payload_len;
3762 cmd_pkt->wr_byte_count = cpu_to_le32(req_data_len);
3763 cmd_pkt->rd_byte_count = cpu_to_le32(rsp_data_len);
3764 cmd_pkt->timeout = cpu_to_le16(qla2x00_get_async_timeout(vha) + 2);
3765
3766 vha->bidi_stats.transfer_bytes += req_data_len;
3767 vha->bidi_stats.io_count++;
3768
3769 vha->qla_stats.output_bytes += req_data_len;
3770 vha->qla_stats.output_requests++;
3771
3772 /* Only one dsd is available for bidirectional IOCB, remaining dsds
3773 * are bundled in continuation iocb
3774 */
3775 avail_dsds = 1;
3776 cur_dsd = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
3777
3778 index = 0;
3779
3780 for_each_sg(bsg_job->request_payload.sg_list, sg,
3781 bsg_job->request_payload.sg_cnt, index) {
3782 dma_addr_t sle_dma;
3783 cont_a64_entry_t *cont_pkt;
3784
3785 /* Allocate additional continuation packets */
3786 if (avail_dsds == 0) {
3787 /* Continuation type 1 IOCB can accomodate
3788 * 5 DSDS
3789 */
3790 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
3791 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
3792 avail_dsds = 5;
3793 entry_count++;
3794 }
3795 sle_dma = sg_dma_address(sg);
3796 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
3797 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
3798 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
3799 avail_dsds--;
3800 }
3801 /* For read request DSD will always goes to continuation IOCB
3802 * and follow the write DSD. If there is room on the current IOCB
3803 * then it is added to that IOCB else new continuation IOCB is
3804 * allocated.
3805 */
3806 for_each_sg(bsg_job->reply_payload.sg_list, sg,
3807 bsg_job->reply_payload.sg_cnt, index) {
3808 dma_addr_t sle_dma;
3809 cont_a64_entry_t *cont_pkt;
3810
3811 /* Allocate additional continuation packets */
3812 if (avail_dsds == 0) {
3813 /* Continuation type 1 IOCB can accomodate
3814 * 5 DSDS
3815 */
3816 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
3817 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
3818 avail_dsds = 5;
3819 entry_count++;
3820 }
3821 sle_dma = sg_dma_address(sg);
3822 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
3823 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
3824 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
3825 avail_dsds--;
3826 }
3827 /* This value should be same as number of IOCB required for this cmd */
3828 cmd_pkt->entry_count = entry_count;
3829 }
3830
3831 int
3832 qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds)
3833 {
3834
3835 struct qla_hw_data *ha = vha->hw;
3836 unsigned long flags;
3837 uint32_t handle;
3838 uint32_t index;
3839 uint16_t req_cnt;
3840 uint16_t cnt;
3841 uint32_t *clr_ptr;
3842 struct cmd_bidir *cmd_pkt = NULL;
3843 struct rsp_que *rsp;
3844 struct req_que *req;
3845 int rval = EXT_STATUS_OK;
3846
3847 rval = QLA_SUCCESS;
3848
3849 rsp = ha->rsp_q_map[0];
3850 req = vha->req;
3851
3852 /* Send marker if required */
3853 if (vha->marker_needed != 0) {
3854 if (qla2x00_marker(vha, ha->base_qpair,
3855 0, 0, MK_SYNC_ALL) != QLA_SUCCESS)
3856 return EXT_STATUS_MAILBOX;
3857 vha->marker_needed = 0;
3858 }
3859
3860 /* Acquire ring specific lock */
3861 spin_lock_irqsave(&ha->hardware_lock, flags);
3862
3863 /* Check for room in outstanding command list. */
3864 handle = req->current_outstanding_cmd;
3865 for (index = 1; index < req->num_outstanding_cmds; index++) {
3866 handle++;
3867 if (handle == req->num_outstanding_cmds)
3868 handle = 1;
3869 if (!req->outstanding_cmds[handle])
3870 break;
3871 }
3872
3873 if (index == req->num_outstanding_cmds) {
3874 rval = EXT_STATUS_BUSY;
3875 goto queuing_error;
3876 }
3877
3878 /* Calculate number of IOCB required */
3879 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
3880
3881 /* Check for room on request queue. */
3882 if (req->cnt < req_cnt + 2) {
3883 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
3884 RD_REG_DWORD_RELAXED(req->req_q_out);
3885 if (req->ring_index < cnt)
3886 req->cnt = cnt - req->ring_index;
3887 else
3888 req->cnt = req->length -
3889 (req->ring_index - cnt);
3890 }
3891 if (req->cnt < req_cnt + 2) {
3892 rval = EXT_STATUS_BUSY;
3893 goto queuing_error;
3894 }
3895
3896 cmd_pkt = (struct cmd_bidir *)req->ring_ptr;
3897 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
3898
3899 /* Zero out remaining portion of packet. */
3900 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
3901 clr_ptr = (uint32_t *)cmd_pkt + 2;
3902 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
3903
3904 /* Set NPORT-ID (of vha)*/
3905 cmd_pkt->nport_handle = cpu_to_le16(vha->self_login_loop_id);
3906 cmd_pkt->port_id[0] = vha->d_id.b.al_pa;
3907 cmd_pkt->port_id[1] = vha->d_id.b.area;
3908 cmd_pkt->port_id[2] = vha->d_id.b.domain;
3909
3910 qla25xx_build_bidir_iocb(sp, vha, cmd_pkt, tot_dsds);
3911 cmd_pkt->entry_status = (uint8_t) rsp->id;
3912 /* Build command packet. */
3913 req->current_outstanding_cmd = handle;
3914 req->outstanding_cmds[handle] = sp;
3915 sp->handle = handle;
3916 req->cnt -= req_cnt;
3917
3918 /* Send the command to the firmware */
3919 wmb();
3920 qla2x00_start_iocbs(vha, req);
3921 queuing_error:
3922 spin_unlock_irqrestore(&ha->hardware_lock, flags);
3923 return rval;
3924 }
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