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qla2xxx: ABTS cause double free of qla_tgt_cmd +.
[deliverable/linux.git] / drivers / scsi / qla2xxx / qla_iocb.c
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2014 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8 #include "qla_target.h"
9
10 #include <linux/blkdev.h>
11 #include <linux/delay.h>
12
13 #include <scsi/scsi_tcq.h>
14
15 static void qla25xx_set_que(srb_t *, struct rsp_que **);
16 /**
17 * qla2x00_get_cmd_direction() - Determine control_flag data direction.
18 * @cmd: SCSI command
19 *
20 * Returns the proper CF_* direction based on CDB.
21 */
22 static inline uint16_t
23 qla2x00_get_cmd_direction(srb_t *sp)
24 {
25 uint16_t cflags;
26 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
27 struct scsi_qla_host *vha = sp->fcport->vha;
28
29 cflags = 0;
30
31 /* Set transfer direction */
32 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
33 cflags = CF_WRITE;
34 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
35 vha->qla_stats.output_requests++;
36 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
37 cflags = CF_READ;
38 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
39 vha->qla_stats.input_requests++;
40 }
41 return (cflags);
42 }
43
44 /**
45 * qla2x00_calc_iocbs_32() - Determine number of Command Type 2 and
46 * Continuation Type 0 IOCBs to allocate.
47 *
48 * @dsds: number of data segment decriptors needed
49 *
50 * Returns the number of IOCB entries needed to store @dsds.
51 */
52 uint16_t
53 qla2x00_calc_iocbs_32(uint16_t dsds)
54 {
55 uint16_t iocbs;
56
57 iocbs = 1;
58 if (dsds > 3) {
59 iocbs += (dsds - 3) / 7;
60 if ((dsds - 3) % 7)
61 iocbs++;
62 }
63 return (iocbs);
64 }
65
66 /**
67 * qla2x00_calc_iocbs_64() - Determine number of Command Type 3 and
68 * Continuation Type 1 IOCBs to allocate.
69 *
70 * @dsds: number of data segment decriptors needed
71 *
72 * Returns the number of IOCB entries needed to store @dsds.
73 */
74 uint16_t
75 qla2x00_calc_iocbs_64(uint16_t dsds)
76 {
77 uint16_t iocbs;
78
79 iocbs = 1;
80 if (dsds > 2) {
81 iocbs += (dsds - 2) / 5;
82 if ((dsds - 2) % 5)
83 iocbs++;
84 }
85 return (iocbs);
86 }
87
88 /**
89 * qla2x00_prep_cont_type0_iocb() - Initialize a Continuation Type 0 IOCB.
90 * @ha: HA context
91 *
92 * Returns a pointer to the Continuation Type 0 IOCB packet.
93 */
94 static inline cont_entry_t *
95 qla2x00_prep_cont_type0_iocb(struct scsi_qla_host *vha)
96 {
97 cont_entry_t *cont_pkt;
98 struct req_que *req = vha->req;
99 /* Adjust ring index. */
100 req->ring_index++;
101 if (req->ring_index == req->length) {
102 req->ring_index = 0;
103 req->ring_ptr = req->ring;
104 } else {
105 req->ring_ptr++;
106 }
107
108 cont_pkt = (cont_entry_t *)req->ring_ptr;
109
110 /* Load packet defaults. */
111 *((uint32_t *)(&cont_pkt->entry_type)) =
112 __constant_cpu_to_le32(CONTINUE_TYPE);
113
114 return (cont_pkt);
115 }
116
117 /**
118 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB.
119 * @ha: HA context
120 *
121 * Returns a pointer to the continuation type 1 IOCB packet.
122 */
123 static inline cont_a64_entry_t *
124 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha, struct req_que *req)
125 {
126 cont_a64_entry_t *cont_pkt;
127
128 /* Adjust ring index. */
129 req->ring_index++;
130 if (req->ring_index == req->length) {
131 req->ring_index = 0;
132 req->ring_ptr = req->ring;
133 } else {
134 req->ring_ptr++;
135 }
136
137 cont_pkt = (cont_a64_entry_t *)req->ring_ptr;
138
139 /* Load packet defaults. */
140 *((uint32_t *)(&cont_pkt->entry_type)) = IS_QLAFX00(vha->hw) ?
141 __constant_cpu_to_le32(CONTINUE_A64_TYPE_FX00) :
142 __constant_cpu_to_le32(CONTINUE_A64_TYPE);
143
144 return (cont_pkt);
145 }
146
147 static inline int
148 qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts)
149 {
150 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
151 uint8_t guard = scsi_host_get_guard(cmd->device->host);
152
153 /* We always use DIFF Bundling for best performance */
154 *fw_prot_opts = 0;
155
156 /* Translate SCSI opcode to a protection opcode */
157 switch (scsi_get_prot_op(cmd)) {
158 case SCSI_PROT_READ_STRIP:
159 *fw_prot_opts |= PO_MODE_DIF_REMOVE;
160 break;
161 case SCSI_PROT_WRITE_INSERT:
162 *fw_prot_opts |= PO_MODE_DIF_INSERT;
163 break;
164 case SCSI_PROT_READ_INSERT:
165 *fw_prot_opts |= PO_MODE_DIF_INSERT;
166 break;
167 case SCSI_PROT_WRITE_STRIP:
168 *fw_prot_opts |= PO_MODE_DIF_REMOVE;
169 break;
170 case SCSI_PROT_READ_PASS:
171 case SCSI_PROT_WRITE_PASS:
172 if (guard & SHOST_DIX_GUARD_IP)
173 *fw_prot_opts |= PO_MODE_DIF_TCP_CKSUM;
174 else
175 *fw_prot_opts |= PO_MODE_DIF_PASS;
176 break;
177 default: /* Normal Request */
178 *fw_prot_opts |= PO_MODE_DIF_PASS;
179 break;
180 }
181
182 return scsi_prot_sg_count(cmd);
183 }
184
185 /*
186 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit
187 * capable IOCB types.
188 *
189 * @sp: SRB command to process
190 * @cmd_pkt: Command type 2 IOCB
191 * @tot_dsds: Total number of segments to transfer
192 */
193 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt,
194 uint16_t tot_dsds)
195 {
196 uint16_t avail_dsds;
197 uint32_t *cur_dsd;
198 scsi_qla_host_t *vha;
199 struct scsi_cmnd *cmd;
200 struct scatterlist *sg;
201 int i;
202
203 cmd = GET_CMD_SP(sp);
204
205 /* Update entry type to indicate Command Type 2 IOCB */
206 *((uint32_t *)(&cmd_pkt->entry_type)) =
207 __constant_cpu_to_le32(COMMAND_TYPE);
208
209 /* No data transfer */
210 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
211 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
212 return;
213 }
214
215 vha = sp->fcport->vha;
216 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
217
218 /* Three DSDs are available in the Command Type 2 IOCB */
219 avail_dsds = 3;
220 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
221
222 /* Load data segments */
223 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
224 cont_entry_t *cont_pkt;
225
226 /* Allocate additional continuation packets? */
227 if (avail_dsds == 0) {
228 /*
229 * Seven DSDs are available in the Continuation
230 * Type 0 IOCB.
231 */
232 cont_pkt = qla2x00_prep_cont_type0_iocb(vha);
233 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address;
234 avail_dsds = 7;
235 }
236
237 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg));
238 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
239 avail_dsds--;
240 }
241 }
242
243 /**
244 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit
245 * capable IOCB types.
246 *
247 * @sp: SRB command to process
248 * @cmd_pkt: Command type 3 IOCB
249 * @tot_dsds: Total number of segments to transfer
250 */
251 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt,
252 uint16_t tot_dsds)
253 {
254 uint16_t avail_dsds;
255 uint32_t *cur_dsd;
256 scsi_qla_host_t *vha;
257 struct scsi_cmnd *cmd;
258 struct scatterlist *sg;
259 int i;
260
261 cmd = GET_CMD_SP(sp);
262
263 /* Update entry type to indicate Command Type 3 IOCB */
264 *((uint32_t *)(&cmd_pkt->entry_type)) =
265 __constant_cpu_to_le32(COMMAND_A64_TYPE);
266
267 /* No data transfer */
268 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
269 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
270 return;
271 }
272
273 vha = sp->fcport->vha;
274 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
275
276 /* Two DSDs are available in the Command Type 3 IOCB */
277 avail_dsds = 2;
278 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
279
280 /* Load data segments */
281 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
282 dma_addr_t sle_dma;
283 cont_a64_entry_t *cont_pkt;
284
285 /* Allocate additional continuation packets? */
286 if (avail_dsds == 0) {
287 /*
288 * Five DSDs are available in the Continuation
289 * Type 1 IOCB.
290 */
291 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
292 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
293 avail_dsds = 5;
294 }
295
296 sle_dma = sg_dma_address(sg);
297 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
298 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
299 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
300 avail_dsds--;
301 }
302 }
303
304 /**
305 * qla2x00_start_scsi() - Send a SCSI command to the ISP
306 * @sp: command to send to the ISP
307 *
308 * Returns non-zero if a failure occurred, else zero.
309 */
310 int
311 qla2x00_start_scsi(srb_t *sp)
312 {
313 int ret, nseg;
314 unsigned long flags;
315 scsi_qla_host_t *vha;
316 struct scsi_cmnd *cmd;
317 uint32_t *clr_ptr;
318 uint32_t index;
319 uint32_t handle;
320 cmd_entry_t *cmd_pkt;
321 uint16_t cnt;
322 uint16_t req_cnt;
323 uint16_t tot_dsds;
324 struct device_reg_2xxx __iomem *reg;
325 struct qla_hw_data *ha;
326 struct req_que *req;
327 struct rsp_que *rsp;
328 char tag[2];
329
330 /* Setup device pointers. */
331 ret = 0;
332 vha = sp->fcport->vha;
333 ha = vha->hw;
334 reg = &ha->iobase->isp;
335 cmd = GET_CMD_SP(sp);
336 req = ha->req_q_map[0];
337 rsp = ha->rsp_q_map[0];
338 /* So we know we haven't pci_map'ed anything yet */
339 tot_dsds = 0;
340
341 /* Send marker if required */
342 if (vha->marker_needed != 0) {
343 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
344 QLA_SUCCESS) {
345 return (QLA_FUNCTION_FAILED);
346 }
347 vha->marker_needed = 0;
348 }
349
350 /* Acquire ring specific lock */
351 spin_lock_irqsave(&ha->hardware_lock, flags);
352
353 /* Check for room in outstanding command list. */
354 handle = req->current_outstanding_cmd;
355 for (index = 1; index < req->num_outstanding_cmds; index++) {
356 handle++;
357 if (handle == req->num_outstanding_cmds)
358 handle = 1;
359 if (!req->outstanding_cmds[handle])
360 break;
361 }
362 if (index == req->num_outstanding_cmds)
363 goto queuing_error;
364
365 /* Map the sg table so we have an accurate count of sg entries needed */
366 if (scsi_sg_count(cmd)) {
367 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
368 scsi_sg_count(cmd), cmd->sc_data_direction);
369 if (unlikely(!nseg))
370 goto queuing_error;
371 } else
372 nseg = 0;
373
374 tot_dsds = nseg;
375
376 /* Calculate the number of request entries needed. */
377 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds);
378 if (req->cnt < (req_cnt + 2)) {
379 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg));
380 if (req->ring_index < cnt)
381 req->cnt = cnt - req->ring_index;
382 else
383 req->cnt = req->length -
384 (req->ring_index - cnt);
385 /* If still no head room then bail out */
386 if (req->cnt < (req_cnt + 2))
387 goto queuing_error;
388 }
389
390 /* Build command packet */
391 req->current_outstanding_cmd = handle;
392 req->outstanding_cmds[handle] = sp;
393 sp->handle = handle;
394 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
395 req->cnt -= req_cnt;
396
397 cmd_pkt = (cmd_entry_t *)req->ring_ptr;
398 cmd_pkt->handle = handle;
399 /* Zero out remaining portion of packet. */
400 clr_ptr = (uint32_t *)cmd_pkt + 2;
401 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
402 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
403
404 /* Set target ID and LUN number*/
405 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id);
406 cmd_pkt->lun = cpu_to_le16(cmd->device->lun);
407
408 /* Update tagged queuing modifier */
409 if (scsi_populate_tag_msg(cmd, tag)) {
410 switch (tag[0]) {
411 case HEAD_OF_QUEUE_TAG:
412 cmd_pkt->control_flags =
413 __constant_cpu_to_le16(CF_HEAD_TAG);
414 break;
415 case ORDERED_QUEUE_TAG:
416 cmd_pkt->control_flags =
417 __constant_cpu_to_le16(CF_ORDERED_TAG);
418 break;
419 default:
420 cmd_pkt->control_flags =
421 __constant_cpu_to_le16(CF_SIMPLE_TAG);
422 break;
423 }
424 } else {
425 cmd_pkt->control_flags = __constant_cpu_to_le16(CF_SIMPLE_TAG);
426 }
427
428 /* Load SCSI command packet. */
429 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len);
430 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
431
432 /* Build IOCB segments */
433 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds);
434
435 /* Set total data segment count. */
436 cmd_pkt->entry_count = (uint8_t)req_cnt;
437 wmb();
438
439 /* Adjust ring index. */
440 req->ring_index++;
441 if (req->ring_index == req->length) {
442 req->ring_index = 0;
443 req->ring_ptr = req->ring;
444 } else
445 req->ring_ptr++;
446
447 sp->flags |= SRB_DMA_VALID;
448
449 /* Set chip new ring index. */
450 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index);
451 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */
452
453 /* Manage unprocessed RIO/ZIO commands in response queue. */
454 if (vha->flags.process_response_queue &&
455 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
456 qla2x00_process_response_queue(rsp);
457
458 spin_unlock_irqrestore(&ha->hardware_lock, flags);
459 return (QLA_SUCCESS);
460
461 queuing_error:
462 if (tot_dsds)
463 scsi_dma_unmap(cmd);
464
465 spin_unlock_irqrestore(&ha->hardware_lock, flags);
466
467 return (QLA_FUNCTION_FAILED);
468 }
469
470 /**
471 * qla2x00_start_iocbs() - Execute the IOCB command
472 */
473 void
474 qla2x00_start_iocbs(struct scsi_qla_host *vha, struct req_que *req)
475 {
476 struct qla_hw_data *ha = vha->hw;
477 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
478
479 if (IS_P3P_TYPE(ha)) {
480 qla82xx_start_iocbs(vha);
481 } else {
482 /* Adjust ring index. */
483 req->ring_index++;
484 if (req->ring_index == req->length) {
485 req->ring_index = 0;
486 req->ring_ptr = req->ring;
487 } else
488 req->ring_ptr++;
489
490 /* Set chip new ring index. */
491 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha)) {
492 WRT_REG_DWORD(req->req_q_in, req->ring_index);
493 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
494 } else if (IS_QLAFX00(ha)) {
495 WRT_REG_DWORD(&reg->ispfx00.req_q_in, req->ring_index);
496 RD_REG_DWORD_RELAXED(&reg->ispfx00.req_q_in);
497 QLAFX00_SET_HST_INTR(ha, ha->rqstq_intr_code);
498 } else if (IS_FWI2_CAPABLE(ha)) {
499 WRT_REG_DWORD(&reg->isp24.req_q_in, req->ring_index);
500 RD_REG_DWORD_RELAXED(&reg->isp24.req_q_in);
501 } else {
502 WRT_REG_WORD(ISP_REQ_Q_IN(ha, &reg->isp),
503 req->ring_index);
504 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, &reg->isp));
505 }
506 }
507 }
508
509 /**
510 * qla2x00_marker() - Send a marker IOCB to the firmware.
511 * @ha: HA context
512 * @loop_id: loop ID
513 * @lun: LUN
514 * @type: marker modifier
515 *
516 * Can be called from both normal and interrupt context.
517 *
518 * Returns non-zero if a failure occurred, else zero.
519 */
520 static int
521 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
522 struct rsp_que *rsp, uint16_t loop_id,
523 uint16_t lun, uint8_t type)
524 {
525 mrk_entry_t *mrk;
526 struct mrk_entry_24xx *mrk24 = NULL;
527
528 struct qla_hw_data *ha = vha->hw;
529 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
530
531 req = ha->req_q_map[0];
532 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, NULL);
533 if (mrk == NULL) {
534 ql_log(ql_log_warn, base_vha, 0x3026,
535 "Failed to allocate Marker IOCB.\n");
536
537 return (QLA_FUNCTION_FAILED);
538 }
539
540 mrk->entry_type = MARKER_TYPE;
541 mrk->modifier = type;
542 if (type != MK_SYNC_ALL) {
543 if (IS_FWI2_CAPABLE(ha)) {
544 mrk24 = (struct mrk_entry_24xx *) mrk;
545 mrk24->nport_handle = cpu_to_le16(loop_id);
546 mrk24->lun[1] = LSB(lun);
547 mrk24->lun[2] = MSB(lun);
548 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
549 mrk24->vp_index = vha->vp_idx;
550 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle);
551 } else {
552 SET_TARGET_ID(ha, mrk->target, loop_id);
553 mrk->lun = cpu_to_le16(lun);
554 }
555 }
556 wmb();
557
558 qla2x00_start_iocbs(vha, req);
559
560 return (QLA_SUCCESS);
561 }
562
563 int
564 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
565 struct rsp_que *rsp, uint16_t loop_id, uint16_t lun,
566 uint8_t type)
567 {
568 int ret;
569 unsigned long flags = 0;
570
571 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
572 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type);
573 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
574
575 return (ret);
576 }
577
578 /*
579 * qla2x00_issue_marker
580 *
581 * Issue marker
582 * Caller CAN have hardware lock held as specified by ha_locked parameter.
583 * Might release it, then reaquire.
584 */
585 int qla2x00_issue_marker(scsi_qla_host_t *vha, int ha_locked)
586 {
587 if (ha_locked) {
588 if (__qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0,
589 MK_SYNC_ALL) != QLA_SUCCESS)
590 return QLA_FUNCTION_FAILED;
591 } else {
592 if (qla2x00_marker(vha, vha->req, vha->req->rsp, 0, 0,
593 MK_SYNC_ALL) != QLA_SUCCESS)
594 return QLA_FUNCTION_FAILED;
595 }
596 vha->marker_needed = 0;
597
598 return QLA_SUCCESS;
599 }
600
601 static inline int
602 qla24xx_build_scsi_type_6_iocbs(srb_t *sp, struct cmd_type_6 *cmd_pkt,
603 uint16_t tot_dsds)
604 {
605 uint32_t *cur_dsd = NULL;
606 scsi_qla_host_t *vha;
607 struct qla_hw_data *ha;
608 struct scsi_cmnd *cmd;
609 struct scatterlist *cur_seg;
610 uint32_t *dsd_seg;
611 void *next_dsd;
612 uint8_t avail_dsds;
613 uint8_t first_iocb = 1;
614 uint32_t dsd_list_len;
615 struct dsd_dma *dsd_ptr;
616 struct ct6_dsd *ctx;
617
618 cmd = GET_CMD_SP(sp);
619
620 /* Update entry type to indicate Command Type 3 IOCB */
621 *((uint32_t *)(&cmd_pkt->entry_type)) =
622 __constant_cpu_to_le32(COMMAND_TYPE_6);
623
624 /* No data transfer */
625 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
626 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
627 return 0;
628 }
629
630 vha = sp->fcport->vha;
631 ha = vha->hw;
632
633 /* Set transfer direction */
634 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
635 cmd_pkt->control_flags =
636 __constant_cpu_to_le16(CF_WRITE_DATA);
637 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
638 vha->qla_stats.output_requests++;
639 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
640 cmd_pkt->control_flags =
641 __constant_cpu_to_le16(CF_READ_DATA);
642 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
643 vha->qla_stats.input_requests++;
644 }
645
646 cur_seg = scsi_sglist(cmd);
647 ctx = GET_CMD_CTX_SP(sp);
648
649 while (tot_dsds) {
650 avail_dsds = (tot_dsds > QLA_DSDS_PER_IOCB) ?
651 QLA_DSDS_PER_IOCB : tot_dsds;
652 tot_dsds -= avail_dsds;
653 dsd_list_len = (avail_dsds + 1) * QLA_DSD_SIZE;
654
655 dsd_ptr = list_first_entry(&ha->gbl_dsd_list,
656 struct dsd_dma, list);
657 next_dsd = dsd_ptr->dsd_addr;
658 list_del(&dsd_ptr->list);
659 ha->gbl_dsd_avail--;
660 list_add_tail(&dsd_ptr->list, &ctx->dsd_list);
661 ctx->dsd_use_cnt++;
662 ha->gbl_dsd_inuse++;
663
664 if (first_iocb) {
665 first_iocb = 0;
666 dsd_seg = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
667 *dsd_seg++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
668 *dsd_seg++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
669 cmd_pkt->fcp_data_dseg_len = cpu_to_le32(dsd_list_len);
670 } else {
671 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
672 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
673 *cur_dsd++ = cpu_to_le32(dsd_list_len);
674 }
675 cur_dsd = (uint32_t *)next_dsd;
676 while (avail_dsds) {
677 dma_addr_t sle_dma;
678
679 sle_dma = sg_dma_address(cur_seg);
680 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
681 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
682 *cur_dsd++ = cpu_to_le32(sg_dma_len(cur_seg));
683 cur_seg = sg_next(cur_seg);
684 avail_dsds--;
685 }
686 }
687
688 /* Null termination */
689 *cur_dsd++ = 0;
690 *cur_dsd++ = 0;
691 *cur_dsd++ = 0;
692 cmd_pkt->control_flags |= CF_DATA_SEG_DESCR_ENABLE;
693 return 0;
694 }
695
696 /*
697 * qla24xx_calc_dsd_lists() - Determine number of DSD list required
698 * for Command Type 6.
699 *
700 * @dsds: number of data segment decriptors needed
701 *
702 * Returns the number of dsd list needed to store @dsds.
703 */
704 inline uint16_t
705 qla24xx_calc_dsd_lists(uint16_t dsds)
706 {
707 uint16_t dsd_lists = 0;
708
709 dsd_lists = (dsds/QLA_DSDS_PER_IOCB);
710 if (dsds % QLA_DSDS_PER_IOCB)
711 dsd_lists++;
712 return dsd_lists;
713 }
714
715
716 /**
717 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
718 * IOCB types.
719 *
720 * @sp: SRB command to process
721 * @cmd_pkt: Command type 3 IOCB
722 * @tot_dsds: Total number of segments to transfer
723 */
724 inline void
725 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
726 uint16_t tot_dsds)
727 {
728 uint16_t avail_dsds;
729 uint32_t *cur_dsd;
730 scsi_qla_host_t *vha;
731 struct scsi_cmnd *cmd;
732 struct scatterlist *sg;
733 int i;
734 struct req_que *req;
735
736 cmd = GET_CMD_SP(sp);
737
738 /* Update entry type to indicate Command Type 3 IOCB */
739 *((uint32_t *)(&cmd_pkt->entry_type)) =
740 __constant_cpu_to_le32(COMMAND_TYPE_7);
741
742 /* No data transfer */
743 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
744 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
745 return;
746 }
747
748 vha = sp->fcport->vha;
749 req = vha->req;
750
751 /* Set transfer direction */
752 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
753 cmd_pkt->task_mgmt_flags =
754 __constant_cpu_to_le16(TMF_WRITE_DATA);
755 vha->qla_stats.output_bytes += scsi_bufflen(cmd);
756 vha->qla_stats.output_requests++;
757 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
758 cmd_pkt->task_mgmt_flags =
759 __constant_cpu_to_le16(TMF_READ_DATA);
760 vha->qla_stats.input_bytes += scsi_bufflen(cmd);
761 vha->qla_stats.input_requests++;
762 }
763
764 /* One DSD is available in the Command Type 3 IOCB */
765 avail_dsds = 1;
766 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
767
768 /* Load data segments */
769
770 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
771 dma_addr_t sle_dma;
772 cont_a64_entry_t *cont_pkt;
773
774 /* Allocate additional continuation packets? */
775 if (avail_dsds == 0) {
776 /*
777 * Five DSDs are available in the Continuation
778 * Type 1 IOCB.
779 */
780 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
781 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
782 avail_dsds = 5;
783 }
784
785 sle_dma = sg_dma_address(sg);
786 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
787 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
788 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
789 avail_dsds--;
790 }
791 }
792
793 struct fw_dif_context {
794 uint32_t ref_tag;
795 uint16_t app_tag;
796 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/
797 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/
798 };
799
800 /*
801 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
802 *
803 */
804 static inline void
805 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt,
806 unsigned int protcnt)
807 {
808 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
809
810 switch (scsi_get_prot_type(cmd)) {
811 case SCSI_PROT_DIF_TYPE0:
812 /*
813 * No check for ql2xenablehba_err_chk, as it would be an
814 * I/O error if hba tag generation is not done.
815 */
816 pkt->ref_tag = cpu_to_le32((uint32_t)
817 (0xffffffff & scsi_get_lba(cmd)));
818
819 if (!qla2x00_hba_err_chk_enabled(sp))
820 break;
821
822 pkt->ref_tag_mask[0] = 0xff;
823 pkt->ref_tag_mask[1] = 0xff;
824 pkt->ref_tag_mask[2] = 0xff;
825 pkt->ref_tag_mask[3] = 0xff;
826 break;
827
828 /*
829 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
830 * match LBA in CDB + N
831 */
832 case SCSI_PROT_DIF_TYPE2:
833 pkt->app_tag = __constant_cpu_to_le16(0);
834 pkt->app_tag_mask[0] = 0x0;
835 pkt->app_tag_mask[1] = 0x0;
836
837 pkt->ref_tag = cpu_to_le32((uint32_t)
838 (0xffffffff & scsi_get_lba(cmd)));
839
840 if (!qla2x00_hba_err_chk_enabled(sp))
841 break;
842
843 /* enable ALL bytes of the ref tag */
844 pkt->ref_tag_mask[0] = 0xff;
845 pkt->ref_tag_mask[1] = 0xff;
846 pkt->ref_tag_mask[2] = 0xff;
847 pkt->ref_tag_mask[3] = 0xff;
848 break;
849
850 /* For Type 3 protection: 16 bit GUARD only */
851 case SCSI_PROT_DIF_TYPE3:
852 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] =
853 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] =
854 0x00;
855 break;
856
857 /*
858 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
859 * 16 bit app tag.
860 */
861 case SCSI_PROT_DIF_TYPE1:
862 pkt->ref_tag = cpu_to_le32((uint32_t)
863 (0xffffffff & scsi_get_lba(cmd)));
864 pkt->app_tag = __constant_cpu_to_le16(0);
865 pkt->app_tag_mask[0] = 0x0;
866 pkt->app_tag_mask[1] = 0x0;
867
868 if (!qla2x00_hba_err_chk_enabled(sp))
869 break;
870
871 /* enable ALL bytes of the ref tag */
872 pkt->ref_tag_mask[0] = 0xff;
873 pkt->ref_tag_mask[1] = 0xff;
874 pkt->ref_tag_mask[2] = 0xff;
875 pkt->ref_tag_mask[3] = 0xff;
876 break;
877 }
878 }
879
880 struct qla2_sgx {
881 dma_addr_t dma_addr; /* OUT */
882 uint32_t dma_len; /* OUT */
883
884 uint32_t tot_bytes; /* IN */
885 struct scatterlist *cur_sg; /* IN */
886
887 /* for book keeping, bzero on initial invocation */
888 uint32_t bytes_consumed;
889 uint32_t num_bytes;
890 uint32_t tot_partial;
891
892 /* for debugging */
893 uint32_t num_sg;
894 srb_t *sp;
895 };
896
897 static int
898 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx,
899 uint32_t *partial)
900 {
901 struct scatterlist *sg;
902 uint32_t cumulative_partial, sg_len;
903 dma_addr_t sg_dma_addr;
904
905 if (sgx->num_bytes == sgx->tot_bytes)
906 return 0;
907
908 sg = sgx->cur_sg;
909 cumulative_partial = sgx->tot_partial;
910
911 sg_dma_addr = sg_dma_address(sg);
912 sg_len = sg_dma_len(sg);
913
914 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed;
915
916 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) {
917 sgx->dma_len = (blk_sz - cumulative_partial);
918 sgx->tot_partial = 0;
919 sgx->num_bytes += blk_sz;
920 *partial = 0;
921 } else {
922 sgx->dma_len = sg_len - sgx->bytes_consumed;
923 sgx->tot_partial += sgx->dma_len;
924 *partial = 1;
925 }
926
927 sgx->bytes_consumed += sgx->dma_len;
928
929 if (sg_len == sgx->bytes_consumed) {
930 sg = sg_next(sg);
931 sgx->num_sg++;
932 sgx->cur_sg = sg;
933 sgx->bytes_consumed = 0;
934 }
935
936 return 1;
937 }
938
939 int
940 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp,
941 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
942 {
943 void *next_dsd;
944 uint8_t avail_dsds = 0;
945 uint32_t dsd_list_len;
946 struct dsd_dma *dsd_ptr;
947 struct scatterlist *sg_prot;
948 uint32_t *cur_dsd = dsd;
949 uint16_t used_dsds = tot_dsds;
950
951 uint32_t prot_int; /* protection interval */
952 uint32_t partial;
953 struct qla2_sgx sgx;
954 dma_addr_t sle_dma;
955 uint32_t sle_dma_len, tot_prot_dma_len = 0;
956 struct scsi_cmnd *cmd;
957 struct scsi_qla_host *vha;
958
959 memset(&sgx, 0, sizeof(struct qla2_sgx));
960 if (sp) {
961 vha = sp->fcport->vha;
962 cmd = GET_CMD_SP(sp);
963 prot_int = cmd->device->sector_size;
964
965 sgx.tot_bytes = scsi_bufflen(cmd);
966 sgx.cur_sg = scsi_sglist(cmd);
967 sgx.sp = sp;
968
969 sg_prot = scsi_prot_sglist(cmd);
970 } else if (tc) {
971 vha = tc->vha;
972 prot_int = tc->blk_sz;
973 sgx.tot_bytes = tc->bufflen;
974 sgx.cur_sg = tc->sg;
975 sg_prot = tc->prot_sg;
976 } else {
977 BUG();
978 return 1;
979 }
980
981 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) {
982
983 sle_dma = sgx.dma_addr;
984 sle_dma_len = sgx.dma_len;
985 alloc_and_fill:
986 /* Allocate additional continuation packets? */
987 if (avail_dsds == 0) {
988 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
989 QLA_DSDS_PER_IOCB : used_dsds;
990 dsd_list_len = (avail_dsds + 1) * 12;
991 used_dsds -= avail_dsds;
992
993 /* allocate tracking DS */
994 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
995 if (!dsd_ptr)
996 return 1;
997
998 /* allocate new list */
999 dsd_ptr->dsd_addr = next_dsd =
1000 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1001 &dsd_ptr->dsd_list_dma);
1002
1003 if (!next_dsd) {
1004 /*
1005 * Need to cleanup only this dsd_ptr, rest
1006 * will be done by sp_free_dma()
1007 */
1008 kfree(dsd_ptr);
1009 return 1;
1010 }
1011
1012 if (sp) {
1013 list_add_tail(&dsd_ptr->list,
1014 &((struct crc_context *)
1015 sp->u.scmd.ctx)->dsd_list);
1016
1017 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1018 } else {
1019 list_add_tail(&dsd_ptr->list,
1020 &(tc->ctx->dsd_list));
1021 tc->ctx_dsd_alloced = 1;
1022 }
1023
1024
1025 /* add new list to cmd iocb or last list */
1026 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1027 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1028 *cur_dsd++ = dsd_list_len;
1029 cur_dsd = (uint32_t *)next_dsd;
1030 }
1031 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1032 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1033 *cur_dsd++ = cpu_to_le32(sle_dma_len);
1034 avail_dsds--;
1035
1036 if (partial == 0) {
1037 /* Got a full protection interval */
1038 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len;
1039 sle_dma_len = 8;
1040
1041 tot_prot_dma_len += sle_dma_len;
1042 if (tot_prot_dma_len == sg_dma_len(sg_prot)) {
1043 tot_prot_dma_len = 0;
1044 sg_prot = sg_next(sg_prot);
1045 }
1046
1047 partial = 1; /* So as to not re-enter this block */
1048 goto alloc_and_fill;
1049 }
1050 }
1051 /* Null termination */
1052 *cur_dsd++ = 0;
1053 *cur_dsd++ = 0;
1054 *cur_dsd++ = 0;
1055 return 0;
1056 }
1057
1058 int
1059 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
1060 uint16_t tot_dsds, struct qla_tgt_cmd *tc)
1061 {
1062 void *next_dsd;
1063 uint8_t avail_dsds = 0;
1064 uint32_t dsd_list_len;
1065 struct dsd_dma *dsd_ptr;
1066 struct scatterlist *sg, *sgl;
1067 uint32_t *cur_dsd = dsd;
1068 int i;
1069 uint16_t used_dsds = tot_dsds;
1070 struct scsi_cmnd *cmd;
1071 struct scsi_qla_host *vha;
1072
1073 if (sp) {
1074 cmd = GET_CMD_SP(sp);
1075 sgl = scsi_sglist(cmd);
1076 vha = sp->fcport->vha;
1077 } else if (tc) {
1078 sgl = tc->sg;
1079 vha = tc->vha;
1080 } else {
1081 BUG();
1082 return 1;
1083 }
1084
1085
1086 for_each_sg(sgl, sg, tot_dsds, i) {
1087 dma_addr_t sle_dma;
1088
1089 /* Allocate additional continuation packets? */
1090 if (avail_dsds == 0) {
1091 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1092 QLA_DSDS_PER_IOCB : used_dsds;
1093 dsd_list_len = (avail_dsds + 1) * 12;
1094 used_dsds -= avail_dsds;
1095
1096 /* allocate tracking DS */
1097 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
1098 if (!dsd_ptr)
1099 return 1;
1100
1101 /* allocate new list */
1102 dsd_ptr->dsd_addr = next_dsd =
1103 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1104 &dsd_ptr->dsd_list_dma);
1105
1106 if (!next_dsd) {
1107 /*
1108 * Need to cleanup only this dsd_ptr, rest
1109 * will be done by sp_free_dma()
1110 */
1111 kfree(dsd_ptr);
1112 return 1;
1113 }
1114
1115 if (sp) {
1116 list_add_tail(&dsd_ptr->list,
1117 &((struct crc_context *)
1118 sp->u.scmd.ctx)->dsd_list);
1119
1120 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1121 } else {
1122 list_add_tail(&dsd_ptr->list,
1123 &(tc->ctx->dsd_list));
1124 tc->ctx_dsd_alloced = 1;
1125 }
1126
1127 /* add new list to cmd iocb or last list */
1128 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1129 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1130 *cur_dsd++ = dsd_list_len;
1131 cur_dsd = (uint32_t *)next_dsd;
1132 }
1133 sle_dma = sg_dma_address(sg);
1134
1135 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1136 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1137 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1138 avail_dsds--;
1139
1140 }
1141 /* Null termination */
1142 *cur_dsd++ = 0;
1143 *cur_dsd++ = 0;
1144 *cur_dsd++ = 0;
1145 return 0;
1146 }
1147
1148 int
1149 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
1150 uint32_t *dsd, uint16_t tot_dsds, struct qla_tgt_cmd *tc)
1151 {
1152 void *next_dsd;
1153 uint8_t avail_dsds = 0;
1154 uint32_t dsd_list_len;
1155 struct dsd_dma *dsd_ptr;
1156 struct scatterlist *sg, *sgl;
1157 int i;
1158 struct scsi_cmnd *cmd;
1159 uint32_t *cur_dsd = dsd;
1160 uint16_t used_dsds = tot_dsds;
1161 struct scsi_qla_host *vha;
1162
1163 if (sp) {
1164 cmd = GET_CMD_SP(sp);
1165 sgl = scsi_prot_sglist(cmd);
1166 vha = sp->fcport->vha;
1167 } else if (tc) {
1168 vha = tc->vha;
1169 sgl = tc->prot_sg;
1170 } else {
1171 BUG();
1172 return 1;
1173 }
1174
1175 ql_dbg(ql_dbg_tgt, vha, 0xe021,
1176 "%s: enter\n", __func__);
1177
1178 for_each_sg(sgl, sg, tot_dsds, i) {
1179 dma_addr_t sle_dma;
1180
1181 /* Allocate additional continuation packets? */
1182 if (avail_dsds == 0) {
1183 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1184 QLA_DSDS_PER_IOCB : used_dsds;
1185 dsd_list_len = (avail_dsds + 1) * 12;
1186 used_dsds -= avail_dsds;
1187
1188 /* allocate tracking DS */
1189 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
1190 if (!dsd_ptr)
1191 return 1;
1192
1193 /* allocate new list */
1194 dsd_ptr->dsd_addr = next_dsd =
1195 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1196 &dsd_ptr->dsd_list_dma);
1197
1198 if (!next_dsd) {
1199 /*
1200 * Need to cleanup only this dsd_ptr, rest
1201 * will be done by sp_free_dma()
1202 */
1203 kfree(dsd_ptr);
1204 return 1;
1205 }
1206
1207 if (sp) {
1208 list_add_tail(&dsd_ptr->list,
1209 &((struct crc_context *)
1210 sp->u.scmd.ctx)->dsd_list);
1211
1212 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1213 } else {
1214 list_add_tail(&dsd_ptr->list,
1215 &(tc->ctx->dsd_list));
1216 tc->ctx_dsd_alloced = 1;
1217 }
1218
1219 /* add new list to cmd iocb or last list */
1220 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1221 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1222 *cur_dsd++ = dsd_list_len;
1223 cur_dsd = (uint32_t *)next_dsd;
1224 }
1225 sle_dma = sg_dma_address(sg);
1226
1227 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1228 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1229 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1230
1231 avail_dsds--;
1232 }
1233 /* Null termination */
1234 *cur_dsd++ = 0;
1235 *cur_dsd++ = 0;
1236 *cur_dsd++ = 0;
1237 return 0;
1238 }
1239
1240 /**
1241 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command
1242 * Type 6 IOCB types.
1243 *
1244 * @sp: SRB command to process
1245 * @cmd_pkt: Command type 3 IOCB
1246 * @tot_dsds: Total number of segments to transfer
1247 */
1248 static inline int
1249 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
1250 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts)
1251 {
1252 uint32_t *cur_dsd, *fcp_dl;
1253 scsi_qla_host_t *vha;
1254 struct scsi_cmnd *cmd;
1255 int sgc;
1256 uint32_t total_bytes = 0;
1257 uint32_t data_bytes;
1258 uint32_t dif_bytes;
1259 uint8_t bundling = 1;
1260 uint16_t blk_size;
1261 uint8_t *clr_ptr;
1262 struct crc_context *crc_ctx_pkt = NULL;
1263 struct qla_hw_data *ha;
1264 uint8_t additional_fcpcdb_len;
1265 uint16_t fcp_cmnd_len;
1266 struct fcp_cmnd *fcp_cmnd;
1267 dma_addr_t crc_ctx_dma;
1268 char tag[2];
1269
1270 cmd = GET_CMD_SP(sp);
1271
1272 sgc = 0;
1273 /* Update entry type to indicate Command Type CRC_2 IOCB */
1274 *((uint32_t *)(&cmd_pkt->entry_type)) =
1275 __constant_cpu_to_le32(COMMAND_TYPE_CRC_2);
1276
1277 vha = sp->fcport->vha;
1278 ha = vha->hw;
1279
1280 /* No data transfer */
1281 data_bytes = scsi_bufflen(cmd);
1282 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1283 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
1284 return QLA_SUCCESS;
1285 }
1286
1287 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
1288
1289 /* Set transfer direction */
1290 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
1291 cmd_pkt->control_flags =
1292 __constant_cpu_to_le16(CF_WRITE_DATA);
1293 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
1294 cmd_pkt->control_flags =
1295 __constant_cpu_to_le16(CF_READ_DATA);
1296 }
1297
1298 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1299 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP) ||
1300 (scsi_get_prot_op(cmd) == SCSI_PROT_READ_STRIP) ||
1301 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_INSERT))
1302 bundling = 0;
1303
1304 /* Allocate CRC context from global pool */
1305 crc_ctx_pkt = sp->u.scmd.ctx =
1306 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC, &crc_ctx_dma);
1307
1308 if (!crc_ctx_pkt)
1309 goto crc_queuing_error;
1310
1311 /* Zero out CTX area. */
1312 clr_ptr = (uint8_t *)crc_ctx_pkt;
1313 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
1314
1315 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
1316
1317 sp->flags |= SRB_CRC_CTX_DMA_VALID;
1318
1319 /* Set handle */
1320 crc_ctx_pkt->handle = cmd_pkt->handle;
1321
1322 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
1323
1324 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *)
1325 &crc_ctx_pkt->ref_tag, tot_prot_dsds);
1326
1327 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
1328 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
1329 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
1330
1331 /* Determine SCSI command length -- align to 4 byte boundary */
1332 if (cmd->cmd_len > 16) {
1333 additional_fcpcdb_len = cmd->cmd_len - 16;
1334 if ((cmd->cmd_len % 4) != 0) {
1335 /* SCSI cmd > 16 bytes must be multiple of 4 */
1336 goto crc_queuing_error;
1337 }
1338 fcp_cmnd_len = 12 + cmd->cmd_len + 4;
1339 } else {
1340 additional_fcpcdb_len = 0;
1341 fcp_cmnd_len = 12 + 16 + 4;
1342 }
1343
1344 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd;
1345
1346 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len;
1347 if (cmd->sc_data_direction == DMA_TO_DEVICE)
1348 fcp_cmnd->additional_cdb_len |= 1;
1349 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
1350 fcp_cmnd->additional_cdb_len |= 2;
1351
1352 int_to_scsilun(cmd->device->lun, &fcp_cmnd->lun);
1353 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
1354 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len);
1355 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32(
1356 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1357 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32(
1358 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1359 fcp_cmnd->task_management = 0;
1360
1361 /*
1362 * Update tagged queuing modifier if using command tag queuing
1363 */
1364 if (scsi_populate_tag_msg(cmd, tag)) {
1365 switch (tag[0]) {
1366 case HEAD_OF_QUEUE_TAG:
1367 fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE;
1368 break;
1369 case ORDERED_QUEUE_TAG:
1370 fcp_cmnd->task_attribute = TSK_ORDERED;
1371 break;
1372 default:
1373 fcp_cmnd->task_attribute = TSK_SIMPLE;
1374 break;
1375 }
1376 } else {
1377 fcp_cmnd->task_attribute = TSK_SIMPLE;
1378 }
1379
1380 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
1381
1382 /* Compute dif len and adjust data len to incude protection */
1383 dif_bytes = 0;
1384 blk_size = cmd->device->sector_size;
1385 dif_bytes = (data_bytes / blk_size) * 8;
1386
1387 switch (scsi_get_prot_op(GET_CMD_SP(sp))) {
1388 case SCSI_PROT_READ_INSERT:
1389 case SCSI_PROT_WRITE_STRIP:
1390 total_bytes = data_bytes;
1391 data_bytes += dif_bytes;
1392 break;
1393
1394 case SCSI_PROT_READ_STRIP:
1395 case SCSI_PROT_WRITE_INSERT:
1396 case SCSI_PROT_READ_PASS:
1397 case SCSI_PROT_WRITE_PASS:
1398 total_bytes = data_bytes + dif_bytes;
1399 break;
1400 default:
1401 BUG();
1402 }
1403
1404 if (!qla2x00_hba_err_chk_enabled(sp))
1405 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
1406 /* HBA error checking enabled */
1407 else if (IS_PI_UNINIT_CAPABLE(ha)) {
1408 if ((scsi_get_prot_type(GET_CMD_SP(sp)) == SCSI_PROT_DIF_TYPE1)
1409 || (scsi_get_prot_type(GET_CMD_SP(sp)) ==
1410 SCSI_PROT_DIF_TYPE2))
1411 fw_prot_opts |= BIT_10;
1412 else if (scsi_get_prot_type(GET_CMD_SP(sp)) ==
1413 SCSI_PROT_DIF_TYPE3)
1414 fw_prot_opts |= BIT_11;
1415 }
1416
1417 if (!bundling) {
1418 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
1419 } else {
1420 /*
1421 * Configure Bundling if we need to fetch interlaving
1422 * protection PCI accesses
1423 */
1424 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
1425 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
1426 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds -
1427 tot_prot_dsds);
1428 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
1429 }
1430
1431 /* Finish the common fields of CRC pkt */
1432 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size);
1433 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
1434 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
1435 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
1436 /* Fibre channel byte count */
1437 cmd_pkt->byte_count = cpu_to_le32(total_bytes);
1438 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 +
1439 additional_fcpcdb_len);
1440 *fcp_dl = htonl(total_bytes);
1441
1442 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1443 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
1444 return QLA_SUCCESS;
1445 }
1446 /* Walks data segments */
1447
1448 cmd_pkt->control_flags |=
1449 __constant_cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE);
1450
1451 if (!bundling && tot_prot_dsds) {
1452 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp,
1453 cur_dsd, tot_dsds, NULL))
1454 goto crc_queuing_error;
1455 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd,
1456 (tot_dsds - tot_prot_dsds), NULL))
1457 goto crc_queuing_error;
1458
1459 if (bundling && tot_prot_dsds) {
1460 /* Walks dif segments */
1461 cmd_pkt->control_flags |=
1462 __constant_cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE);
1463 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
1464 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd,
1465 tot_prot_dsds, NULL))
1466 goto crc_queuing_error;
1467 }
1468 return QLA_SUCCESS;
1469
1470 crc_queuing_error:
1471 /* Cleanup will be performed by the caller */
1472
1473 return QLA_FUNCTION_FAILED;
1474 }
1475
1476 /**
1477 * qla24xx_start_scsi() - Send a SCSI command to the ISP
1478 * @sp: command to send to the ISP
1479 *
1480 * Returns non-zero if a failure occurred, else zero.
1481 */
1482 int
1483 qla24xx_start_scsi(srb_t *sp)
1484 {
1485 int ret, nseg;
1486 unsigned long flags;
1487 uint32_t *clr_ptr;
1488 uint32_t index;
1489 uint32_t handle;
1490 struct cmd_type_7 *cmd_pkt;
1491 uint16_t cnt;
1492 uint16_t req_cnt;
1493 uint16_t tot_dsds;
1494 struct req_que *req = NULL;
1495 struct rsp_que *rsp = NULL;
1496 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1497 struct scsi_qla_host *vha = sp->fcport->vha;
1498 struct qla_hw_data *ha = vha->hw;
1499 char tag[2];
1500
1501 /* Setup device pointers. */
1502 ret = 0;
1503
1504 qla25xx_set_que(sp, &rsp);
1505 req = vha->req;
1506
1507 /* So we know we haven't pci_map'ed anything yet */
1508 tot_dsds = 0;
1509
1510 /* Send marker if required */
1511 if (vha->marker_needed != 0) {
1512 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1513 QLA_SUCCESS)
1514 return QLA_FUNCTION_FAILED;
1515 vha->marker_needed = 0;
1516 }
1517
1518 /* Acquire ring specific lock */
1519 spin_lock_irqsave(&ha->hardware_lock, flags);
1520
1521 /* Check for room in outstanding command list. */
1522 handle = req->current_outstanding_cmd;
1523 for (index = 1; index < req->num_outstanding_cmds; index++) {
1524 handle++;
1525 if (handle == req->num_outstanding_cmds)
1526 handle = 1;
1527 if (!req->outstanding_cmds[handle])
1528 break;
1529 }
1530 if (index == req->num_outstanding_cmds)
1531 goto queuing_error;
1532
1533 /* Map the sg table so we have an accurate count of sg entries needed */
1534 if (scsi_sg_count(cmd)) {
1535 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1536 scsi_sg_count(cmd), cmd->sc_data_direction);
1537 if (unlikely(!nseg))
1538 goto queuing_error;
1539 } else
1540 nseg = 0;
1541
1542 tot_dsds = nseg;
1543 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
1544 if (req->cnt < (req_cnt + 2)) {
1545 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
1546 RD_REG_DWORD_RELAXED(req->req_q_out);
1547 if (req->ring_index < cnt)
1548 req->cnt = cnt - req->ring_index;
1549 else
1550 req->cnt = req->length -
1551 (req->ring_index - cnt);
1552 if (req->cnt < (req_cnt + 2))
1553 goto queuing_error;
1554 }
1555
1556 /* Build command packet. */
1557 req->current_outstanding_cmd = handle;
1558 req->outstanding_cmds[handle] = sp;
1559 sp->handle = handle;
1560 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1561 req->cnt -= req_cnt;
1562
1563 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
1564 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1565
1566 /* Zero out remaining portion of packet. */
1567 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
1568 clr_ptr = (uint32_t *)cmd_pkt + 2;
1569 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1570 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1571
1572 /* Set NPORT-ID and LUN number*/
1573 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1574 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1575 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1576 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1577 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
1578
1579 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
1580 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1581
1582 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */
1583 if (scsi_populate_tag_msg(cmd, tag)) {
1584 switch (tag[0]) {
1585 case HEAD_OF_QUEUE_TAG:
1586 cmd_pkt->task = TSK_HEAD_OF_QUEUE;
1587 break;
1588 case ORDERED_QUEUE_TAG:
1589 cmd_pkt->task = TSK_ORDERED;
1590 break;
1591 default:
1592 cmd_pkt->task = TSK_SIMPLE;
1593 break;
1594 }
1595 } else {
1596 cmd_pkt->task = TSK_SIMPLE;
1597 }
1598
1599 /* Load SCSI command packet. */
1600 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
1601 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
1602
1603 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
1604
1605 /* Build IOCB segments */
1606 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
1607
1608 /* Set total data segment count. */
1609 cmd_pkt->entry_count = (uint8_t)req_cnt;
1610 /* Specify response queue number where completion should happen */
1611 cmd_pkt->entry_status = (uint8_t) rsp->id;
1612 wmb();
1613 /* Adjust ring index. */
1614 req->ring_index++;
1615 if (req->ring_index == req->length) {
1616 req->ring_index = 0;
1617 req->ring_ptr = req->ring;
1618 } else
1619 req->ring_ptr++;
1620
1621 sp->flags |= SRB_DMA_VALID;
1622
1623 /* Set chip new ring index. */
1624 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1625 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1626
1627 /* Manage unprocessed RIO/ZIO commands in response queue. */
1628 if (vha->flags.process_response_queue &&
1629 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1630 qla24xx_process_response_queue(vha, rsp);
1631
1632 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1633 return QLA_SUCCESS;
1634
1635 queuing_error:
1636 if (tot_dsds)
1637 scsi_dma_unmap(cmd);
1638
1639 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1640
1641 return QLA_FUNCTION_FAILED;
1642 }
1643
1644 /**
1645 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP
1646 * @sp: command to send to the ISP
1647 *
1648 * Returns non-zero if a failure occurred, else zero.
1649 */
1650 int
1651 qla24xx_dif_start_scsi(srb_t *sp)
1652 {
1653 int nseg;
1654 unsigned long flags;
1655 uint32_t *clr_ptr;
1656 uint32_t index;
1657 uint32_t handle;
1658 uint16_t cnt;
1659 uint16_t req_cnt = 0;
1660 uint16_t tot_dsds;
1661 uint16_t tot_prot_dsds;
1662 uint16_t fw_prot_opts = 0;
1663 struct req_que *req = NULL;
1664 struct rsp_que *rsp = NULL;
1665 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1666 struct scsi_qla_host *vha = sp->fcport->vha;
1667 struct qla_hw_data *ha = vha->hw;
1668 struct cmd_type_crc_2 *cmd_pkt;
1669 uint32_t status = 0;
1670
1671 #define QDSS_GOT_Q_SPACE BIT_0
1672
1673 /* Only process protection or >16 cdb in this routine */
1674 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
1675 if (cmd->cmd_len <= 16)
1676 return qla24xx_start_scsi(sp);
1677 }
1678
1679 /* Setup device pointers. */
1680
1681 qla25xx_set_que(sp, &rsp);
1682 req = vha->req;
1683
1684 /* So we know we haven't pci_map'ed anything yet */
1685 tot_dsds = 0;
1686
1687 /* Send marker if required */
1688 if (vha->marker_needed != 0) {
1689 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1690 QLA_SUCCESS)
1691 return QLA_FUNCTION_FAILED;
1692 vha->marker_needed = 0;
1693 }
1694
1695 /* Acquire ring specific lock */
1696 spin_lock_irqsave(&ha->hardware_lock, flags);
1697
1698 /* Check for room in outstanding command list. */
1699 handle = req->current_outstanding_cmd;
1700 for (index = 1; index < req->num_outstanding_cmds; index++) {
1701 handle++;
1702 if (handle == req->num_outstanding_cmds)
1703 handle = 1;
1704 if (!req->outstanding_cmds[handle])
1705 break;
1706 }
1707
1708 if (index == req->num_outstanding_cmds)
1709 goto queuing_error;
1710
1711 /* Compute number of required data segments */
1712 /* Map the sg table so we have an accurate count of sg entries needed */
1713 if (scsi_sg_count(cmd)) {
1714 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1715 scsi_sg_count(cmd), cmd->sc_data_direction);
1716 if (unlikely(!nseg))
1717 goto queuing_error;
1718 else
1719 sp->flags |= SRB_DMA_VALID;
1720
1721 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1722 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1723 struct qla2_sgx sgx;
1724 uint32_t partial;
1725
1726 memset(&sgx, 0, sizeof(struct qla2_sgx));
1727 sgx.tot_bytes = scsi_bufflen(cmd);
1728 sgx.cur_sg = scsi_sglist(cmd);
1729 sgx.sp = sp;
1730
1731 nseg = 0;
1732 while (qla24xx_get_one_block_sg(
1733 cmd->device->sector_size, &sgx, &partial))
1734 nseg++;
1735 }
1736 } else
1737 nseg = 0;
1738
1739 /* number of required data segments */
1740 tot_dsds = nseg;
1741
1742 /* Compute number of required protection segments */
1743 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
1744 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
1745 scsi_prot_sg_count(cmd), cmd->sc_data_direction);
1746 if (unlikely(!nseg))
1747 goto queuing_error;
1748 else
1749 sp->flags |= SRB_CRC_PROT_DMA_VALID;
1750
1751 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1752 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1753 nseg = scsi_bufflen(cmd) / cmd->device->sector_size;
1754 }
1755 } else {
1756 nseg = 0;
1757 }
1758
1759 req_cnt = 1;
1760 /* Total Data and protection sg segment(s) */
1761 tot_prot_dsds = nseg;
1762 tot_dsds += nseg;
1763 if (req->cnt < (req_cnt + 2)) {
1764 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
1765 RD_REG_DWORD_RELAXED(req->req_q_out);
1766 if (req->ring_index < cnt)
1767 req->cnt = cnt - req->ring_index;
1768 else
1769 req->cnt = req->length -
1770 (req->ring_index - cnt);
1771 if (req->cnt < (req_cnt + 2))
1772 goto queuing_error;
1773 }
1774
1775 status |= QDSS_GOT_Q_SPACE;
1776
1777 /* Build header part of command packet (excluding the OPCODE). */
1778 req->current_outstanding_cmd = handle;
1779 req->outstanding_cmds[handle] = sp;
1780 sp->handle = handle;
1781 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1782 req->cnt -= req_cnt;
1783
1784 /* Fill-in common area */
1785 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
1786 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1787
1788 clr_ptr = (uint32_t *)cmd_pkt + 2;
1789 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1790
1791 /* Set NPORT-ID and LUN number*/
1792 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1793 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1794 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1795 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1796
1797 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
1798 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1799
1800 /* Total Data and protection segment(s) */
1801 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1802
1803 /* Build IOCB segments and adjust for data protection segments */
1804 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
1805 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
1806 QLA_SUCCESS)
1807 goto queuing_error;
1808
1809 cmd_pkt->entry_count = (uint8_t)req_cnt;
1810 /* Specify response queue number where completion should happen */
1811 cmd_pkt->entry_status = (uint8_t) rsp->id;
1812 cmd_pkt->timeout = __constant_cpu_to_le16(0);
1813 wmb();
1814
1815 /* Adjust ring index. */
1816 req->ring_index++;
1817 if (req->ring_index == req->length) {
1818 req->ring_index = 0;
1819 req->ring_ptr = req->ring;
1820 } else
1821 req->ring_ptr++;
1822
1823 /* Set chip new ring index. */
1824 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1825 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1826
1827 /* Manage unprocessed RIO/ZIO commands in response queue. */
1828 if (vha->flags.process_response_queue &&
1829 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1830 qla24xx_process_response_queue(vha, rsp);
1831
1832 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1833
1834 return QLA_SUCCESS;
1835
1836 queuing_error:
1837 if (status & QDSS_GOT_Q_SPACE) {
1838 req->outstanding_cmds[handle] = NULL;
1839 req->cnt += req_cnt;
1840 }
1841 /* Cleanup will be performed by the caller (queuecommand) */
1842
1843 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1844 return QLA_FUNCTION_FAILED;
1845 }
1846
1847
1848 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp)
1849 {
1850 struct scsi_cmnd *cmd = GET_CMD_SP(sp);
1851 struct qla_hw_data *ha = sp->fcport->vha->hw;
1852 int affinity = cmd->request->cpu;
1853
1854 if (ha->flags.cpu_affinity_enabled && affinity >= 0 &&
1855 affinity < ha->max_rsp_queues - 1)
1856 *rsp = ha->rsp_q_map[affinity + 1];
1857 else
1858 *rsp = ha->rsp_q_map[0];
1859 }
1860
1861 /* Generic Control-SRB manipulation functions. */
1862 void *
1863 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp)
1864 {
1865 struct qla_hw_data *ha = vha->hw;
1866 struct req_que *req = ha->req_q_map[0];
1867 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
1868 uint32_t index, handle;
1869 request_t *pkt;
1870 uint16_t cnt, req_cnt;
1871
1872 pkt = NULL;
1873 req_cnt = 1;
1874 handle = 0;
1875
1876 if (!sp)
1877 goto skip_cmd_array;
1878
1879 /* Check for room in outstanding command list. */
1880 handle = req->current_outstanding_cmd;
1881 for (index = 1; index < req->num_outstanding_cmds; index++) {
1882 handle++;
1883 if (handle == req->num_outstanding_cmds)
1884 handle = 1;
1885 if (!req->outstanding_cmds[handle])
1886 break;
1887 }
1888 if (index == req->num_outstanding_cmds) {
1889 ql_log(ql_log_warn, vha, 0x700b,
1890 "No room on outstanding cmd array.\n");
1891 goto queuing_error;
1892 }
1893
1894 /* Prep command array. */
1895 req->current_outstanding_cmd = handle;
1896 req->outstanding_cmds[handle] = sp;
1897 sp->handle = handle;
1898
1899 /* Adjust entry-counts as needed. */
1900 if (sp->type != SRB_SCSI_CMD)
1901 req_cnt = sp->iocbs;
1902
1903 skip_cmd_array:
1904 /* Check for room on request queue. */
1905 if (req->cnt < req_cnt) {
1906 if (ha->mqenable || IS_QLA83XX(ha) || IS_QLA27XX(ha))
1907 cnt = RD_REG_DWORD(&reg->isp25mq.req_q_out);
1908 else if (IS_P3P_TYPE(ha))
1909 cnt = RD_REG_DWORD(&reg->isp82.req_q_out);
1910 else if (IS_FWI2_CAPABLE(ha))
1911 cnt = RD_REG_DWORD(&reg->isp24.req_q_out);
1912 else if (IS_QLAFX00(ha))
1913 cnt = RD_REG_DWORD(&reg->ispfx00.req_q_out);
1914 else
1915 cnt = qla2x00_debounce_register(
1916 ISP_REQ_Q_OUT(ha, &reg->isp));
1917
1918 if (req->ring_index < cnt)
1919 req->cnt = cnt - req->ring_index;
1920 else
1921 req->cnt = req->length -
1922 (req->ring_index - cnt);
1923 }
1924 if (req->cnt < req_cnt)
1925 goto queuing_error;
1926
1927 /* Prep packet */
1928 req->cnt -= req_cnt;
1929 pkt = req->ring_ptr;
1930 memset(pkt, 0, REQUEST_ENTRY_SIZE);
1931 if (IS_QLAFX00(ha)) {
1932 WRT_REG_BYTE((void __iomem *)&pkt->entry_count, req_cnt);
1933 WRT_REG_WORD((void __iomem *)&pkt->handle, handle);
1934 } else {
1935 pkt->entry_count = req_cnt;
1936 pkt->handle = handle;
1937 }
1938
1939 queuing_error:
1940 return pkt;
1941 }
1942
1943 static void
1944 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1945 {
1946 struct srb_iocb *lio = &sp->u.iocb_cmd;
1947
1948 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1949 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
1950 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
1951 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
1952 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
1953 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
1954 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1955 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1956 logio->port_id[1] = sp->fcport->d_id.b.area;
1957 logio->port_id[2] = sp->fcport->d_id.b.domain;
1958 logio->vp_index = sp->fcport->vha->vp_idx;
1959 }
1960
1961 static void
1962 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
1963 {
1964 struct qla_hw_data *ha = sp->fcport->vha->hw;
1965 struct srb_iocb *lio = &sp->u.iocb_cmd;
1966 uint16_t opts;
1967
1968 mbx->entry_type = MBX_IOCB_TYPE;
1969 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1970 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
1971 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0;
1972 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0;
1973 if (HAS_EXTENDED_IDS(ha)) {
1974 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1975 mbx->mb10 = cpu_to_le16(opts);
1976 } else {
1977 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts);
1978 }
1979 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1980 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1981 sp->fcport->d_id.b.al_pa);
1982 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
1983 }
1984
1985 static void
1986 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1987 {
1988 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1989 logio->control_flags =
1990 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
1991 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1992 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1993 logio->port_id[1] = sp->fcport->d_id.b.area;
1994 logio->port_id[2] = sp->fcport->d_id.b.domain;
1995 logio->vp_index = sp->fcport->vha->vp_idx;
1996 }
1997
1998 static void
1999 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx)
2000 {
2001 struct qla_hw_data *ha = sp->fcport->vha->hw;
2002
2003 mbx->entry_type = MBX_IOCB_TYPE;
2004 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
2005 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
2006 mbx->mb1 = HAS_EXTENDED_IDS(ha) ?
2007 cpu_to_le16(sp->fcport->loop_id):
2008 cpu_to_le16(sp->fcport->loop_id << 8);
2009 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
2010 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
2011 sp->fcport->d_id.b.al_pa);
2012 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
2013 /* Implicit: mbx->mbx10 = 0. */
2014 }
2015
2016 static void
2017 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio)
2018 {
2019 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
2020 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC);
2021 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2022 logio->vp_index = sp->fcport->vha->vp_idx;
2023 }
2024
2025 static void
2026 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx)
2027 {
2028 struct qla_hw_data *ha = sp->fcport->vha->hw;
2029
2030 mbx->entry_type = MBX_IOCB_TYPE;
2031 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
2032 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE);
2033 if (HAS_EXTENDED_IDS(ha)) {
2034 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
2035 mbx->mb10 = cpu_to_le16(BIT_0);
2036 } else {
2037 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0);
2038 }
2039 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma));
2040 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma));
2041 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma)));
2042 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma)));
2043 mbx->mb9 = cpu_to_le16(sp->fcport->vha->vp_idx);
2044 }
2045
2046 static void
2047 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk)
2048 {
2049 uint32_t flags;
2050 unsigned int lun;
2051 struct fc_port *fcport = sp->fcport;
2052 scsi_qla_host_t *vha = fcport->vha;
2053 struct qla_hw_data *ha = vha->hw;
2054 struct srb_iocb *iocb = &sp->u.iocb_cmd;
2055 struct req_que *req = vha->req;
2056
2057 flags = iocb->u.tmf.flags;
2058 lun = iocb->u.tmf.lun;
2059
2060 tsk->entry_type = TSK_MGMT_IOCB_TYPE;
2061 tsk->entry_count = 1;
2062 tsk->handle = MAKE_HANDLE(req->id, tsk->handle);
2063 tsk->nport_handle = cpu_to_le16(fcport->loop_id);
2064 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
2065 tsk->control_flags = cpu_to_le32(flags);
2066 tsk->port_id[0] = fcport->d_id.b.al_pa;
2067 tsk->port_id[1] = fcport->d_id.b.area;
2068 tsk->port_id[2] = fcport->d_id.b.domain;
2069 tsk->vp_index = fcport->vha->vp_idx;
2070
2071 if (flags == TCF_LUN_RESET) {
2072 int_to_scsilun(lun, &tsk->lun);
2073 host_to_fcp_swap((uint8_t *)&tsk->lun,
2074 sizeof(tsk->lun));
2075 }
2076 }
2077
2078 static void
2079 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
2080 {
2081 struct fc_bsg_job *bsg_job = sp->u.bsg_job;
2082
2083 els_iocb->entry_type = ELS_IOCB_TYPE;
2084 els_iocb->entry_count = 1;
2085 els_iocb->sys_define = 0;
2086 els_iocb->entry_status = 0;
2087 els_iocb->handle = sp->handle;
2088 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2089 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
2090 els_iocb->vp_index = sp->fcport->vha->vp_idx;
2091 els_iocb->sof_type = EST_SOFI3;
2092 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2093
2094 els_iocb->opcode =
2095 sp->type == SRB_ELS_CMD_RPT ?
2096 bsg_job->request->rqst_data.r_els.els_code :
2097 bsg_job->request->rqst_data.h_els.command_code;
2098 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2099 els_iocb->port_id[1] = sp->fcport->d_id.b.area;
2100 els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2101 els_iocb->control_flags = 0;
2102 els_iocb->rx_byte_count =
2103 cpu_to_le32(bsg_job->reply_payload.payload_len);
2104 els_iocb->tx_byte_count =
2105 cpu_to_le32(bsg_job->request_payload.payload_len);
2106
2107 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address
2108 (bsg_job->request_payload.sg_list)));
2109 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address
2110 (bsg_job->request_payload.sg_list)));
2111 els_iocb->tx_len = cpu_to_le32(sg_dma_len
2112 (bsg_job->request_payload.sg_list));
2113
2114 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address
2115 (bsg_job->reply_payload.sg_list)));
2116 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address
2117 (bsg_job->reply_payload.sg_list)));
2118 els_iocb->rx_len = cpu_to_le32(sg_dma_len
2119 (bsg_job->reply_payload.sg_list));
2120
2121 sp->fcport->vha->qla_stats.control_requests++;
2122 }
2123
2124 static void
2125 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb)
2126 {
2127 uint16_t avail_dsds;
2128 uint32_t *cur_dsd;
2129 struct scatterlist *sg;
2130 int index;
2131 uint16_t tot_dsds;
2132 scsi_qla_host_t *vha = sp->fcport->vha;
2133 struct qla_hw_data *ha = vha->hw;
2134 struct fc_bsg_job *bsg_job = sp->u.bsg_job;
2135 int loop_iterartion = 0;
2136 int cont_iocb_prsnt = 0;
2137 int entry_count = 1;
2138
2139 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t));
2140 ct_iocb->entry_type = CT_IOCB_TYPE;
2141 ct_iocb->entry_status = 0;
2142 ct_iocb->handle1 = sp->handle;
2143 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id);
2144 ct_iocb->status = __constant_cpu_to_le16(0);
2145 ct_iocb->control_flags = __constant_cpu_to_le16(0);
2146 ct_iocb->timeout = 0;
2147 ct_iocb->cmd_dsd_count =
2148 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
2149 ct_iocb->total_dsd_count =
2150 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1);
2151 ct_iocb->req_bytecount =
2152 cpu_to_le32(bsg_job->request_payload.payload_len);
2153 ct_iocb->rsp_bytecount =
2154 cpu_to_le32(bsg_job->reply_payload.payload_len);
2155
2156 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address
2157 (bsg_job->request_payload.sg_list)));
2158 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address
2159 (bsg_job->request_payload.sg_list)));
2160 ct_iocb->dseg_req_length = ct_iocb->req_bytecount;
2161
2162 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address
2163 (bsg_job->reply_payload.sg_list)));
2164 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address
2165 (bsg_job->reply_payload.sg_list)));
2166 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount;
2167
2168 avail_dsds = 1;
2169 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address;
2170 index = 0;
2171 tot_dsds = bsg_job->reply_payload.sg_cnt;
2172
2173 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
2174 dma_addr_t sle_dma;
2175 cont_a64_entry_t *cont_pkt;
2176
2177 /* Allocate additional continuation packets? */
2178 if (avail_dsds == 0) {
2179 /*
2180 * Five DSDs are available in the Cont.
2181 * Type 1 IOCB.
2182 */
2183 cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
2184 vha->hw->req_q_map[0]);
2185 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2186 avail_dsds = 5;
2187 cont_iocb_prsnt = 1;
2188 entry_count++;
2189 }
2190
2191 sle_dma = sg_dma_address(sg);
2192 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2193 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2194 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2195 loop_iterartion++;
2196 avail_dsds--;
2197 }
2198 ct_iocb->entry_count = entry_count;
2199
2200 sp->fcport->vha->qla_stats.control_requests++;
2201 }
2202
2203 static void
2204 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
2205 {
2206 uint16_t avail_dsds;
2207 uint32_t *cur_dsd;
2208 struct scatterlist *sg;
2209 int index;
2210 uint16_t tot_dsds;
2211 scsi_qla_host_t *vha = sp->fcport->vha;
2212 struct qla_hw_data *ha = vha->hw;
2213 struct fc_bsg_job *bsg_job = sp->u.bsg_job;
2214 int loop_iterartion = 0;
2215 int cont_iocb_prsnt = 0;
2216 int entry_count = 1;
2217
2218 ct_iocb->entry_type = CT_IOCB_TYPE;
2219 ct_iocb->entry_status = 0;
2220 ct_iocb->sys_define = 0;
2221 ct_iocb->handle = sp->handle;
2222
2223 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2224 ct_iocb->vp_index = sp->fcport->vha->vp_idx;
2225 ct_iocb->comp_status = __constant_cpu_to_le16(0);
2226
2227 ct_iocb->cmd_dsd_count =
2228 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
2229 ct_iocb->timeout = 0;
2230 ct_iocb->rsp_dsd_count =
2231 __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2232 ct_iocb->rsp_byte_count =
2233 cpu_to_le32(bsg_job->reply_payload.payload_len);
2234 ct_iocb->cmd_byte_count =
2235 cpu_to_le32(bsg_job->request_payload.payload_len);
2236 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address
2237 (bsg_job->request_payload.sg_list)));
2238 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address
2239 (bsg_job->request_payload.sg_list)));
2240 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len
2241 (bsg_job->request_payload.sg_list));
2242
2243 avail_dsds = 1;
2244 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address;
2245 index = 0;
2246 tot_dsds = bsg_job->reply_payload.sg_cnt;
2247
2248 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
2249 dma_addr_t sle_dma;
2250 cont_a64_entry_t *cont_pkt;
2251
2252 /* Allocate additional continuation packets? */
2253 if (avail_dsds == 0) {
2254 /*
2255 * Five DSDs are available in the Cont.
2256 * Type 1 IOCB.
2257 */
2258 cont_pkt = qla2x00_prep_cont_type1_iocb(vha,
2259 ha->req_q_map[0]);
2260 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2261 avail_dsds = 5;
2262 cont_iocb_prsnt = 1;
2263 entry_count++;
2264 }
2265
2266 sle_dma = sg_dma_address(sg);
2267 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2268 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2269 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2270 loop_iterartion++;
2271 avail_dsds--;
2272 }
2273 ct_iocb->entry_count = entry_count;
2274 }
2275
2276 /*
2277 * qla82xx_start_scsi() - Send a SCSI command to the ISP
2278 * @sp: command to send to the ISP
2279 *
2280 * Returns non-zero if a failure occurred, else zero.
2281 */
2282 int
2283 qla82xx_start_scsi(srb_t *sp)
2284 {
2285 int ret, nseg;
2286 unsigned long flags;
2287 struct scsi_cmnd *cmd;
2288 uint32_t *clr_ptr;
2289 uint32_t index;
2290 uint32_t handle;
2291 uint16_t cnt;
2292 uint16_t req_cnt;
2293 uint16_t tot_dsds;
2294 struct device_reg_82xx __iomem *reg;
2295 uint32_t dbval;
2296 uint32_t *fcp_dl;
2297 uint8_t additional_cdb_len;
2298 struct ct6_dsd *ctx;
2299 struct scsi_qla_host *vha = sp->fcport->vha;
2300 struct qla_hw_data *ha = vha->hw;
2301 struct req_que *req = NULL;
2302 struct rsp_que *rsp = NULL;
2303 char tag[2];
2304
2305 /* Setup device pointers. */
2306 ret = 0;
2307 reg = &ha->iobase->isp82;
2308 cmd = GET_CMD_SP(sp);
2309 req = vha->req;
2310 rsp = ha->rsp_q_map[0];
2311
2312 /* So we know we haven't pci_map'ed anything yet */
2313 tot_dsds = 0;
2314
2315 dbval = 0x04 | (ha->portnum << 5);
2316
2317 /* Send marker if required */
2318 if (vha->marker_needed != 0) {
2319 if (qla2x00_marker(vha, req,
2320 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS) {
2321 ql_log(ql_log_warn, vha, 0x300c,
2322 "qla2x00_marker failed for cmd=%p.\n", cmd);
2323 return QLA_FUNCTION_FAILED;
2324 }
2325 vha->marker_needed = 0;
2326 }
2327
2328 /* Acquire ring specific lock */
2329 spin_lock_irqsave(&ha->hardware_lock, flags);
2330
2331 /* Check for room in outstanding command list. */
2332 handle = req->current_outstanding_cmd;
2333 for (index = 1; index < req->num_outstanding_cmds; index++) {
2334 handle++;
2335 if (handle == req->num_outstanding_cmds)
2336 handle = 1;
2337 if (!req->outstanding_cmds[handle])
2338 break;
2339 }
2340 if (index == req->num_outstanding_cmds)
2341 goto queuing_error;
2342
2343 /* Map the sg table so we have an accurate count of sg entries needed */
2344 if (scsi_sg_count(cmd)) {
2345 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
2346 scsi_sg_count(cmd), cmd->sc_data_direction);
2347 if (unlikely(!nseg))
2348 goto queuing_error;
2349 } else
2350 nseg = 0;
2351
2352 tot_dsds = nseg;
2353
2354 if (tot_dsds > ql2xshiftctondsd) {
2355 struct cmd_type_6 *cmd_pkt;
2356 uint16_t more_dsd_lists = 0;
2357 struct dsd_dma *dsd_ptr;
2358 uint16_t i;
2359
2360 more_dsd_lists = qla24xx_calc_dsd_lists(tot_dsds);
2361 if ((more_dsd_lists + ha->gbl_dsd_inuse) >= NUM_DSD_CHAIN) {
2362 ql_dbg(ql_dbg_io, vha, 0x300d,
2363 "Num of DSD list %d is than %d for cmd=%p.\n",
2364 more_dsd_lists + ha->gbl_dsd_inuse, NUM_DSD_CHAIN,
2365 cmd);
2366 goto queuing_error;
2367 }
2368
2369 if (more_dsd_lists <= ha->gbl_dsd_avail)
2370 goto sufficient_dsds;
2371 else
2372 more_dsd_lists -= ha->gbl_dsd_avail;
2373
2374 for (i = 0; i < more_dsd_lists; i++) {
2375 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
2376 if (!dsd_ptr) {
2377 ql_log(ql_log_fatal, vha, 0x300e,
2378 "Failed to allocate memory for dsd_dma "
2379 "for cmd=%p.\n", cmd);
2380 goto queuing_error;
2381 }
2382
2383 dsd_ptr->dsd_addr = dma_pool_alloc(ha->dl_dma_pool,
2384 GFP_ATOMIC, &dsd_ptr->dsd_list_dma);
2385 if (!dsd_ptr->dsd_addr) {
2386 kfree(dsd_ptr);
2387 ql_log(ql_log_fatal, vha, 0x300f,
2388 "Failed to allocate memory for dsd_addr "
2389 "for cmd=%p.\n", cmd);
2390 goto queuing_error;
2391 }
2392 list_add_tail(&dsd_ptr->list, &ha->gbl_dsd_list);
2393 ha->gbl_dsd_avail++;
2394 }
2395
2396 sufficient_dsds:
2397 req_cnt = 1;
2398
2399 if (req->cnt < (req_cnt + 2)) {
2400 cnt = (uint16_t)RD_REG_DWORD_RELAXED(
2401 &reg->req_q_out[0]);
2402 if (req->ring_index < cnt)
2403 req->cnt = cnt - req->ring_index;
2404 else
2405 req->cnt = req->length -
2406 (req->ring_index - cnt);
2407 if (req->cnt < (req_cnt + 2))
2408 goto queuing_error;
2409 }
2410
2411 ctx = sp->u.scmd.ctx =
2412 mempool_alloc(ha->ctx_mempool, GFP_ATOMIC);
2413 if (!ctx) {
2414 ql_log(ql_log_fatal, vha, 0x3010,
2415 "Failed to allocate ctx for cmd=%p.\n", cmd);
2416 goto queuing_error;
2417 }
2418
2419 memset(ctx, 0, sizeof(struct ct6_dsd));
2420 ctx->fcp_cmnd = dma_pool_alloc(ha->fcp_cmnd_dma_pool,
2421 GFP_ATOMIC, &ctx->fcp_cmnd_dma);
2422 if (!ctx->fcp_cmnd) {
2423 ql_log(ql_log_fatal, vha, 0x3011,
2424 "Failed to allocate fcp_cmnd for cmd=%p.\n", cmd);
2425 goto queuing_error;
2426 }
2427
2428 /* Initialize the DSD list and dma handle */
2429 INIT_LIST_HEAD(&ctx->dsd_list);
2430 ctx->dsd_use_cnt = 0;
2431
2432 if (cmd->cmd_len > 16) {
2433 additional_cdb_len = cmd->cmd_len - 16;
2434 if ((cmd->cmd_len % 4) != 0) {
2435 /* SCSI command bigger than 16 bytes must be
2436 * multiple of 4
2437 */
2438 ql_log(ql_log_warn, vha, 0x3012,
2439 "scsi cmd len %d not multiple of 4 "
2440 "for cmd=%p.\n", cmd->cmd_len, cmd);
2441 goto queuing_error_fcp_cmnd;
2442 }
2443 ctx->fcp_cmnd_len = 12 + cmd->cmd_len + 4;
2444 } else {
2445 additional_cdb_len = 0;
2446 ctx->fcp_cmnd_len = 12 + 16 + 4;
2447 }
2448
2449 cmd_pkt = (struct cmd_type_6 *)req->ring_ptr;
2450 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2451
2452 /* Zero out remaining portion of packet. */
2453 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
2454 clr_ptr = (uint32_t *)cmd_pkt + 2;
2455 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2456 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
2457
2458 /* Set NPORT-ID and LUN number*/
2459 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2460 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
2461 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
2462 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
2463 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
2464
2465 /* Build IOCB segments */
2466 if (qla24xx_build_scsi_type_6_iocbs(sp, cmd_pkt, tot_dsds))
2467 goto queuing_error_fcp_cmnd;
2468
2469 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
2470 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
2471
2472 /* build FCP_CMND IU */
2473 memset(ctx->fcp_cmnd, 0, sizeof(struct fcp_cmnd));
2474 int_to_scsilun(cmd->device->lun, &ctx->fcp_cmnd->lun);
2475 ctx->fcp_cmnd->additional_cdb_len = additional_cdb_len;
2476
2477 if (cmd->sc_data_direction == DMA_TO_DEVICE)
2478 ctx->fcp_cmnd->additional_cdb_len |= 1;
2479 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
2480 ctx->fcp_cmnd->additional_cdb_len |= 2;
2481
2482 /*
2483 * Update tagged queuing modifier -- default is TSK_SIMPLE (0).
2484 */
2485 if (scsi_populate_tag_msg(cmd, tag)) {
2486 switch (tag[0]) {
2487 case HEAD_OF_QUEUE_TAG:
2488 ctx->fcp_cmnd->task_attribute =
2489 TSK_HEAD_OF_QUEUE;
2490 break;
2491 case ORDERED_QUEUE_TAG:
2492 ctx->fcp_cmnd->task_attribute =
2493 TSK_ORDERED;
2494 break;
2495 }
2496 }
2497
2498 /* Populate the FCP_PRIO. */
2499 if (ha->flags.fcp_prio_enabled)
2500 ctx->fcp_cmnd->task_attribute |=
2501 sp->fcport->fcp_prio << 3;
2502
2503 memcpy(ctx->fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
2504
2505 fcp_dl = (uint32_t *)(ctx->fcp_cmnd->cdb + 16 +
2506 additional_cdb_len);
2507 *fcp_dl = htonl((uint32_t)scsi_bufflen(cmd));
2508
2509 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(ctx->fcp_cmnd_len);
2510 cmd_pkt->fcp_cmnd_dseg_address[0] =
2511 cpu_to_le32(LSD(ctx->fcp_cmnd_dma));
2512 cmd_pkt->fcp_cmnd_dseg_address[1] =
2513 cpu_to_le32(MSD(ctx->fcp_cmnd_dma));
2514
2515 sp->flags |= SRB_FCP_CMND_DMA_VALID;
2516 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
2517 /* Set total data segment count. */
2518 cmd_pkt->entry_count = (uint8_t)req_cnt;
2519 /* Specify response queue number where
2520 * completion should happen
2521 */
2522 cmd_pkt->entry_status = (uint8_t) rsp->id;
2523 } else {
2524 struct cmd_type_7 *cmd_pkt;
2525 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
2526 if (req->cnt < (req_cnt + 2)) {
2527 cnt = (uint16_t)RD_REG_DWORD_RELAXED(
2528 &reg->req_q_out[0]);
2529 if (req->ring_index < cnt)
2530 req->cnt = cnt - req->ring_index;
2531 else
2532 req->cnt = req->length -
2533 (req->ring_index - cnt);
2534 }
2535 if (req->cnt < (req_cnt + 2))
2536 goto queuing_error;
2537
2538 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
2539 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2540
2541 /* Zero out remaining portion of packet. */
2542 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
2543 clr_ptr = (uint32_t *)cmd_pkt + 2;
2544 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2545 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
2546
2547 /* Set NPORT-ID and LUN number*/
2548 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2549 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
2550 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
2551 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
2552 cmd_pkt->vp_index = sp->fcport->vha->vp_idx;
2553
2554 int_to_scsilun(cmd->device->lun, &cmd_pkt->lun);
2555 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun,
2556 sizeof(cmd_pkt->lun));
2557
2558 /*
2559 * Update tagged queuing modifier -- default is TSK_SIMPLE (0).
2560 */
2561 if (scsi_populate_tag_msg(cmd, tag)) {
2562 switch (tag[0]) {
2563 case HEAD_OF_QUEUE_TAG:
2564 cmd_pkt->task = TSK_HEAD_OF_QUEUE;
2565 break;
2566 case ORDERED_QUEUE_TAG:
2567 cmd_pkt->task = TSK_ORDERED;
2568 break;
2569 }
2570 }
2571
2572 /* Populate the FCP_PRIO. */
2573 if (ha->flags.fcp_prio_enabled)
2574 cmd_pkt->task |= sp->fcport->fcp_prio << 3;
2575
2576 /* Load SCSI command packet. */
2577 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
2578 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
2579
2580 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
2581
2582 /* Build IOCB segments */
2583 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
2584
2585 /* Set total data segment count. */
2586 cmd_pkt->entry_count = (uint8_t)req_cnt;
2587 /* Specify response queue number where
2588 * completion should happen.
2589 */
2590 cmd_pkt->entry_status = (uint8_t) rsp->id;
2591
2592 }
2593 /* Build command packet. */
2594 req->current_outstanding_cmd = handle;
2595 req->outstanding_cmds[handle] = sp;
2596 sp->handle = handle;
2597 cmd->host_scribble = (unsigned char *)(unsigned long)handle;
2598 req->cnt -= req_cnt;
2599 wmb();
2600
2601 /* Adjust ring index. */
2602 req->ring_index++;
2603 if (req->ring_index == req->length) {
2604 req->ring_index = 0;
2605 req->ring_ptr = req->ring;
2606 } else
2607 req->ring_ptr++;
2608
2609 sp->flags |= SRB_DMA_VALID;
2610
2611 /* Set chip new ring index. */
2612 /* write, read and verify logic */
2613 dbval = dbval | (req->id << 8) | (req->ring_index << 16);
2614 if (ql2xdbwr)
2615 qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval);
2616 else {
2617 WRT_REG_DWORD(
2618 (unsigned long __iomem *)ha->nxdb_wr_ptr,
2619 dbval);
2620 wmb();
2621 while (RD_REG_DWORD((void __iomem *)ha->nxdb_rd_ptr) != dbval) {
2622 WRT_REG_DWORD(
2623 (unsigned long __iomem *)ha->nxdb_wr_ptr,
2624 dbval);
2625 wmb();
2626 }
2627 }
2628
2629 /* Manage unprocessed RIO/ZIO commands in response queue. */
2630 if (vha->flags.process_response_queue &&
2631 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
2632 qla24xx_process_response_queue(vha, rsp);
2633
2634 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2635 return QLA_SUCCESS;
2636
2637 queuing_error_fcp_cmnd:
2638 dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd, ctx->fcp_cmnd_dma);
2639 queuing_error:
2640 if (tot_dsds)
2641 scsi_dma_unmap(cmd);
2642
2643 if (sp->u.scmd.ctx) {
2644 mempool_free(sp->u.scmd.ctx, ha->ctx_mempool);
2645 sp->u.scmd.ctx = NULL;
2646 }
2647 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2648
2649 return QLA_FUNCTION_FAILED;
2650 }
2651
2652 void
2653 qla24xx_abort_iocb(srb_t *sp, struct abort_entry_24xx *abt_iocb)
2654 {
2655 struct srb_iocb *aio = &sp->u.iocb_cmd;
2656 scsi_qla_host_t *vha = sp->fcport->vha;
2657 struct req_que *req = vha->req;
2658
2659 memset(abt_iocb, 0, sizeof(struct abort_entry_24xx));
2660 abt_iocb->entry_type = ABORT_IOCB_TYPE;
2661 abt_iocb->entry_count = 1;
2662 abt_iocb->handle = cpu_to_le32(MAKE_HANDLE(req->id, sp->handle));
2663 abt_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2664 abt_iocb->handle_to_abort =
2665 cpu_to_le32(MAKE_HANDLE(req->id, aio->u.abt.cmd_hndl));
2666 abt_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
2667 abt_iocb->port_id[1] = sp->fcport->d_id.b.area;
2668 abt_iocb->port_id[2] = sp->fcport->d_id.b.domain;
2669 abt_iocb->vp_index = vha->vp_idx;
2670 abt_iocb->req_que_no = cpu_to_le16(req->id);
2671 /* Send the command to the firmware */
2672 wmb();
2673 }
2674
2675 int
2676 qla2x00_start_sp(srb_t *sp)
2677 {
2678 int rval;
2679 struct qla_hw_data *ha = sp->fcport->vha->hw;
2680 void *pkt;
2681 unsigned long flags;
2682
2683 rval = QLA_FUNCTION_FAILED;
2684 spin_lock_irqsave(&ha->hardware_lock, flags);
2685 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp);
2686 if (!pkt) {
2687 ql_log(ql_log_warn, sp->fcport->vha, 0x700c,
2688 "qla2x00_alloc_iocbs failed.\n");
2689 goto done;
2690 }
2691
2692 rval = QLA_SUCCESS;
2693 switch (sp->type) {
2694 case SRB_LOGIN_CMD:
2695 IS_FWI2_CAPABLE(ha) ?
2696 qla24xx_login_iocb(sp, pkt) :
2697 qla2x00_login_iocb(sp, pkt);
2698 break;
2699 case SRB_LOGOUT_CMD:
2700 IS_FWI2_CAPABLE(ha) ?
2701 qla24xx_logout_iocb(sp, pkt) :
2702 qla2x00_logout_iocb(sp, pkt);
2703 break;
2704 case SRB_ELS_CMD_RPT:
2705 case SRB_ELS_CMD_HST:
2706 qla24xx_els_iocb(sp, pkt);
2707 break;
2708 case SRB_CT_CMD:
2709 IS_FWI2_CAPABLE(ha) ?
2710 qla24xx_ct_iocb(sp, pkt) :
2711 qla2x00_ct_iocb(sp, pkt);
2712 break;
2713 case SRB_ADISC_CMD:
2714 IS_FWI2_CAPABLE(ha) ?
2715 qla24xx_adisc_iocb(sp, pkt) :
2716 qla2x00_adisc_iocb(sp, pkt);
2717 break;
2718 case SRB_TM_CMD:
2719 IS_QLAFX00(ha) ?
2720 qlafx00_tm_iocb(sp, pkt) :
2721 qla24xx_tm_iocb(sp, pkt);
2722 break;
2723 case SRB_FXIOCB_DCMD:
2724 case SRB_FXIOCB_BCMD:
2725 qlafx00_fxdisc_iocb(sp, pkt);
2726 break;
2727 case SRB_ABT_CMD:
2728 IS_QLAFX00(ha) ?
2729 qlafx00_abort_iocb(sp, pkt) :
2730 qla24xx_abort_iocb(sp, pkt);
2731 break;
2732 default:
2733 break;
2734 }
2735
2736 wmb();
2737 qla2x00_start_iocbs(sp->fcport->vha, ha->req_q_map[0]);
2738 done:
2739 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2740 return rval;
2741 }
2742
2743 static void
2744 qla25xx_build_bidir_iocb(srb_t *sp, struct scsi_qla_host *vha,
2745 struct cmd_bidir *cmd_pkt, uint32_t tot_dsds)
2746 {
2747 uint16_t avail_dsds;
2748 uint32_t *cur_dsd;
2749 uint32_t req_data_len = 0;
2750 uint32_t rsp_data_len = 0;
2751 struct scatterlist *sg;
2752 int index;
2753 int entry_count = 1;
2754 struct fc_bsg_job *bsg_job = sp->u.bsg_job;
2755
2756 /*Update entry type to indicate bidir command */
2757 *((uint32_t *)(&cmd_pkt->entry_type)) =
2758 __constant_cpu_to_le32(COMMAND_BIDIRECTIONAL);
2759
2760 /* Set the transfer direction, in this set both flags
2761 * Also set the BD_WRAP_BACK flag, firmware will take care
2762 * assigning DID=SID for outgoing pkts.
2763 */
2764 cmd_pkt->wr_dseg_count = cpu_to_le16(bsg_job->request_payload.sg_cnt);
2765 cmd_pkt->rd_dseg_count = cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2766 cmd_pkt->control_flags =
2767 __constant_cpu_to_le16(BD_WRITE_DATA | BD_READ_DATA |
2768 BD_WRAP_BACK);
2769
2770 req_data_len = rsp_data_len = bsg_job->request_payload.payload_len;
2771 cmd_pkt->wr_byte_count = cpu_to_le32(req_data_len);
2772 cmd_pkt->rd_byte_count = cpu_to_le32(rsp_data_len);
2773 cmd_pkt->timeout = cpu_to_le16(qla2x00_get_async_timeout(vha) + 2);
2774
2775 vha->bidi_stats.transfer_bytes += req_data_len;
2776 vha->bidi_stats.io_count++;
2777
2778 vha->qla_stats.output_bytes += req_data_len;
2779 vha->qla_stats.output_requests++;
2780
2781 /* Only one dsd is available for bidirectional IOCB, remaining dsds
2782 * are bundled in continuation iocb
2783 */
2784 avail_dsds = 1;
2785 cur_dsd = (uint32_t *)&cmd_pkt->fcp_data_dseg_address;
2786
2787 index = 0;
2788
2789 for_each_sg(bsg_job->request_payload.sg_list, sg,
2790 bsg_job->request_payload.sg_cnt, index) {
2791 dma_addr_t sle_dma;
2792 cont_a64_entry_t *cont_pkt;
2793
2794 /* Allocate additional continuation packets */
2795 if (avail_dsds == 0) {
2796 /* Continuation type 1 IOCB can accomodate
2797 * 5 DSDS
2798 */
2799 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
2800 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2801 avail_dsds = 5;
2802 entry_count++;
2803 }
2804 sle_dma = sg_dma_address(sg);
2805 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2806 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2807 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2808 avail_dsds--;
2809 }
2810 /* For read request DSD will always goes to continuation IOCB
2811 * and follow the write DSD. If there is room on the current IOCB
2812 * then it is added to that IOCB else new continuation IOCB is
2813 * allocated.
2814 */
2815 for_each_sg(bsg_job->reply_payload.sg_list, sg,
2816 bsg_job->reply_payload.sg_cnt, index) {
2817 dma_addr_t sle_dma;
2818 cont_a64_entry_t *cont_pkt;
2819
2820 /* Allocate additional continuation packets */
2821 if (avail_dsds == 0) {
2822 /* Continuation type 1 IOCB can accomodate
2823 * 5 DSDS
2824 */
2825 cont_pkt = qla2x00_prep_cont_type1_iocb(vha, vha->req);
2826 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2827 avail_dsds = 5;
2828 entry_count++;
2829 }
2830 sle_dma = sg_dma_address(sg);
2831 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2832 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2833 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2834 avail_dsds--;
2835 }
2836 /* This value should be same as number of IOCB required for this cmd */
2837 cmd_pkt->entry_count = entry_count;
2838 }
2839
2840 int
2841 qla2x00_start_bidir(srb_t *sp, struct scsi_qla_host *vha, uint32_t tot_dsds)
2842 {
2843
2844 struct qla_hw_data *ha = vha->hw;
2845 unsigned long flags;
2846 uint32_t handle;
2847 uint32_t index;
2848 uint16_t req_cnt;
2849 uint16_t cnt;
2850 uint32_t *clr_ptr;
2851 struct cmd_bidir *cmd_pkt = NULL;
2852 struct rsp_que *rsp;
2853 struct req_que *req;
2854 int rval = EXT_STATUS_OK;
2855
2856 rval = QLA_SUCCESS;
2857
2858 rsp = ha->rsp_q_map[0];
2859 req = vha->req;
2860
2861 /* Send marker if required */
2862 if (vha->marker_needed != 0) {
2863 if (qla2x00_marker(vha, req,
2864 rsp, 0, 0, MK_SYNC_ALL) != QLA_SUCCESS)
2865 return EXT_STATUS_MAILBOX;
2866 vha->marker_needed = 0;
2867 }
2868
2869 /* Acquire ring specific lock */
2870 spin_lock_irqsave(&ha->hardware_lock, flags);
2871
2872 /* Check for room in outstanding command list. */
2873 handle = req->current_outstanding_cmd;
2874 for (index = 1; index < req->num_outstanding_cmds; index++) {
2875 handle++;
2876 if (handle == req->num_outstanding_cmds)
2877 handle = 1;
2878 if (!req->outstanding_cmds[handle])
2879 break;
2880 }
2881
2882 if (index == req->num_outstanding_cmds) {
2883 rval = EXT_STATUS_BUSY;
2884 goto queuing_error;
2885 }
2886
2887 /* Calculate number of IOCB required */
2888 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
2889
2890 /* Check for room on request queue. */
2891 if (req->cnt < req_cnt + 2) {
2892 cnt = IS_SHADOW_REG_CAPABLE(ha) ? *req->out_ptr :
2893 RD_REG_DWORD_RELAXED(req->req_q_out);
2894 if (req->ring_index < cnt)
2895 req->cnt = cnt - req->ring_index;
2896 else
2897 req->cnt = req->length -
2898 (req->ring_index - cnt);
2899 }
2900 if (req->cnt < req_cnt + 2) {
2901 rval = EXT_STATUS_BUSY;
2902 goto queuing_error;
2903 }
2904
2905 cmd_pkt = (struct cmd_bidir *)req->ring_ptr;
2906 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
2907
2908 /* Zero out remaining portion of packet. */
2909 /* tagged queuing modifier -- default is TSK_SIMPLE (0).*/
2910 clr_ptr = (uint32_t *)cmd_pkt + 2;
2911 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
2912
2913 /* Set NPORT-ID (of vha)*/
2914 cmd_pkt->nport_handle = cpu_to_le16(vha->self_login_loop_id);
2915 cmd_pkt->port_id[0] = vha->d_id.b.al_pa;
2916 cmd_pkt->port_id[1] = vha->d_id.b.area;
2917 cmd_pkt->port_id[2] = vha->d_id.b.domain;
2918
2919 qla25xx_build_bidir_iocb(sp, vha, cmd_pkt, tot_dsds);
2920 cmd_pkt->entry_status = (uint8_t) rsp->id;
2921 /* Build command packet. */
2922 req->current_outstanding_cmd = handle;
2923 req->outstanding_cmds[handle] = sp;
2924 sp->handle = handle;
2925 req->cnt -= req_cnt;
2926
2927 /* Send the command to the firmware */
2928 wmb();
2929 qla2x00_start_iocbs(vha, req);
2930 queuing_error:
2931 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2932 return rval;
2933 }
Linux kernel - Deliverables
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