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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
[linux-btrfs-devel.git] / drivers / scsi / qla2xxx / qla_iocb.c
blobdbec89622a0fa09d77ae6ad6c45e7df9237da3e0
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2011 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8
9 #include <linux/blkdev.h>
10 #include <linux/delay.h>
11
12 #include <scsi/scsi_tcq.h>
13
14 static void qla2x00_isp_cmd(struct scsi_qla_host *, struct req_que *);
15
16 static void qla25xx_set_que(srb_t *, struct rsp_que **);
17 /**
18 * qla2x00_get_cmd_direction() - Determine control_flag data direction.
19 * @cmd: SCSI command
20 *
21 * Returns the proper CF_* direction based on CDB.
22 */
23 static inline uint16_t
24 qla2x00_get_cmd_direction(srb_t *sp)
25 {
26 uint16_t cflags;
27
28 cflags = 0;
29
30 /* Set transfer direction */
31 if (sp->cmd->sc_data_direction == DMA_TO_DEVICE) {
32 cflags = CF_WRITE;
33 sp->fcport->vha->hw->qla_stats.output_bytes +=
34 scsi_bufflen(sp->cmd);
35 } else if (sp->cmd->sc_data_direction == DMA_FROM_DEVICE) {
36 cflags = CF_READ;
37 sp->fcport->vha->hw->qla_stats.input_bytes +=
38 scsi_bufflen(sp->cmd);
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 * @ha: 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)) =
111 __constant_cpu_to_le32(CONTINUE_TYPE);
112
113 return (cont_pkt);
114 }
115
116 /**
117 * qla2x00_prep_cont_type1_iocb() - Initialize a Continuation Type 1 IOCB.
118 * @ha: HA context
119 *
120 * Returns a pointer to the continuation type 1 IOCB packet.
121 */
122 static inline cont_a64_entry_t *
123 qla2x00_prep_cont_type1_iocb(scsi_qla_host_t *vha)
124 {
125 cont_a64_entry_t *cont_pkt;
126
127 struct req_que *req = vha->req;
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)) =
141 __constant_cpu_to_le32(CONTINUE_A64_TYPE);
142
143 return (cont_pkt);
144 }
145
146 static inline int
147 qla24xx_configure_prot_mode(srb_t *sp, uint16_t *fw_prot_opts)
148 {
149 uint8_t guard = scsi_host_get_guard(sp->cmd->device->host);
150
151 /* We only support T10 DIF right now */
152 if (guard != SHOST_DIX_GUARD_CRC) {
153 ql_dbg(ql_dbg_io, sp->fcport->vha, 0x3007,
154 "Unsupported guard: %d for cmd=%p.\n", guard, sp->cmd);
155 return 0;
156 }
157
158 /* We always use DIFF Bundling for best performance */
159 *fw_prot_opts = 0;
160
161 /* Translate SCSI opcode to a protection opcode */
162 switch (scsi_get_prot_op(sp->cmd)) {
163 case SCSI_PROT_READ_STRIP:
164 *fw_prot_opts |= PO_MODE_DIF_REMOVE;
165 break;
166 case SCSI_PROT_WRITE_INSERT:
167 *fw_prot_opts |= PO_MODE_DIF_INSERT;
168 break;
169 case SCSI_PROT_READ_INSERT:
170 *fw_prot_opts |= PO_MODE_DIF_INSERT;
171 break;
172 case SCSI_PROT_WRITE_STRIP:
173 *fw_prot_opts |= PO_MODE_DIF_REMOVE;
174 break;
175 case SCSI_PROT_READ_PASS:
176 *fw_prot_opts |= PO_MODE_DIF_PASS;
177 break;
178 case SCSI_PROT_WRITE_PASS:
179 *fw_prot_opts |= PO_MODE_DIF_PASS;
180 break;
181 default: /* Normal Request */
182 *fw_prot_opts |= PO_MODE_DIF_PASS;
183 break;
184 }
185
186 return scsi_prot_sg_count(sp->cmd);
187 }
188
189 /*
190 * qla2x00_build_scsi_iocbs_32() - Build IOCB command utilizing 32bit
191 * capable IOCB types.
192 *
193 * @sp: SRB command to process
194 * @cmd_pkt: Command type 2 IOCB
195 * @tot_dsds: Total number of segments to transfer
196 */
197 void qla2x00_build_scsi_iocbs_32(srb_t *sp, cmd_entry_t *cmd_pkt,
198 uint16_t tot_dsds)
199 {
200 uint16_t avail_dsds;
201 uint32_t *cur_dsd;
202 scsi_qla_host_t *vha;
203 struct scsi_cmnd *cmd;
204 struct scatterlist *sg;
205 int i;
206
207 cmd = sp->cmd;
208
209 /* Update entry type to indicate Command Type 2 IOCB */
210 *((uint32_t *)(&cmd_pkt->entry_type)) =
211 __constant_cpu_to_le32(COMMAND_TYPE);
212
213 /* No data transfer */
214 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
215 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
216 return;
217 }
218
219 vha = sp->fcport->vha;
220 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
221
222 /* Three DSDs are available in the Command Type 2 IOCB */
223 avail_dsds = 3;
224 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
225
226 /* Load data segments */
227 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
228 cont_entry_t *cont_pkt;
229
230 /* Allocate additional continuation packets? */
231 if (avail_dsds == 0) {
232 /*
233 * Seven DSDs are available in the Continuation
234 * Type 0 IOCB.
235 */
236 cont_pkt = qla2x00_prep_cont_type0_iocb(vha);
237 cur_dsd = (uint32_t *)&cont_pkt->dseg_0_address;
238 avail_dsds = 7;
239 }
240
241 *cur_dsd++ = cpu_to_le32(sg_dma_address(sg));
242 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
243 avail_dsds--;
244 }
245 }
246
247 /**
248 * qla2x00_build_scsi_iocbs_64() - Build IOCB command utilizing 64bit
249 * capable IOCB types.
250 *
251 * @sp: SRB command to process
252 * @cmd_pkt: Command type 3 IOCB
253 * @tot_dsds: Total number of segments to transfer
254 */
255 void qla2x00_build_scsi_iocbs_64(srb_t *sp, cmd_entry_t *cmd_pkt,
256 uint16_t tot_dsds)
257 {
258 uint16_t avail_dsds;
259 uint32_t *cur_dsd;
260 scsi_qla_host_t *vha;
261 struct scsi_cmnd *cmd;
262 struct scatterlist *sg;
263 int i;
264
265 cmd = sp->cmd;
266
267 /* Update entry type to indicate Command Type 3 IOCB */
268 *((uint32_t *)(&cmd_pkt->entry_type)) =
269 __constant_cpu_to_le32(COMMAND_A64_TYPE);
270
271 /* No data transfer */
272 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
273 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
274 return;
275 }
276
277 vha = sp->fcport->vha;
278 cmd_pkt->control_flags |= cpu_to_le16(qla2x00_get_cmd_direction(sp));
279
280 /* Two DSDs are available in the Command Type 3 IOCB */
281 avail_dsds = 2;
282 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
283
284 /* Load data segments */
285 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
286 dma_addr_t sle_dma;
287 cont_a64_entry_t *cont_pkt;
288
289 /* Allocate additional continuation packets? */
290 if (avail_dsds == 0) {
291 /*
292 * Five DSDs are available in the Continuation
293 * Type 1 IOCB.
294 */
295 cont_pkt = qla2x00_prep_cont_type1_iocb(vha);
296 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
297 avail_dsds = 5;
298 }
299
300 sle_dma = sg_dma_address(sg);
301 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
302 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
303 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
304 avail_dsds--;
305 }
306 }
307
308 /**
309 * qla2x00_start_scsi() - Send a SCSI command to the ISP
310 * @sp: command to send to the ISP
311 *
312 * Returns non-zero if a failure occurred, else zero.
313 */
314 int
315 qla2x00_start_scsi(srb_t *sp)
316 {
317 int ret, nseg;
318 unsigned long flags;
319 scsi_qla_host_t *vha;
320 struct scsi_cmnd *cmd;
321 uint32_t *clr_ptr;
322 uint32_t index;
323 uint32_t handle;
324 cmd_entry_t *cmd_pkt;
325 uint16_t cnt;
326 uint16_t req_cnt;
327 uint16_t tot_dsds;
328 struct device_reg_2xxx __iomem *reg;
329 struct qla_hw_data *ha;
330 struct req_que *req;
331 struct rsp_que *rsp;
332 char tag[2];
333
334 /* Setup device pointers. */
335 ret = 0;
336 vha = sp->fcport->vha;
337 ha = vha->hw;
338 reg = &ha->iobase->isp;
339 cmd = sp->cmd;
340 req = ha->req_q_map[0];
341 rsp = ha->rsp_q_map[0];
342 /* So we know we haven't pci_map'ed anything yet */
343 tot_dsds = 0;
344
345 /* Send marker if required */
346 if (vha->marker_needed != 0) {
347 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
348 QLA_SUCCESS) {
349 return (QLA_FUNCTION_FAILED);
350 }
351 vha->marker_needed = 0;
352 }
353
354 /* Acquire ring specific lock */
355 spin_lock_irqsave(&ha->hardware_lock, flags);
356
357 /* Check for room in outstanding command list. */
358 handle = req->current_outstanding_cmd;
359 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
360 handle++;
361 if (handle == MAX_OUTSTANDING_COMMANDS)
362 handle = 1;
363 if (!req->outstanding_cmds[handle])
364 break;
365 }
366 if (index == MAX_OUTSTANDING_COMMANDS)
367 goto queuing_error;
368
369 /* Map the sg table so we have an accurate count of sg entries needed */
370 if (scsi_sg_count(cmd)) {
371 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
372 scsi_sg_count(cmd), cmd->sc_data_direction);
373 if (unlikely(!nseg))
374 goto queuing_error;
375 } else
376 nseg = 0;
377
378 tot_dsds = nseg;
379
380 /* Calculate the number of request entries needed. */
381 req_cnt = ha->isp_ops->calc_req_entries(tot_dsds);
382 if (req->cnt < (req_cnt + 2)) {
383 cnt = RD_REG_WORD_RELAXED(ISP_REQ_Q_OUT(ha, reg));
384 if (req->ring_index < cnt)
385 req->cnt = cnt - req->ring_index;
386 else
387 req->cnt = req->length -
388 (req->ring_index - cnt);
389 }
390 if (req->cnt < (req_cnt + 2))
391 goto queuing_error;
392
393 /* Build command packet */
394 req->current_outstanding_cmd = handle;
395 req->outstanding_cmds[handle] = sp;
396 sp->handle = handle;
397 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
398 req->cnt -= req_cnt;
399
400 cmd_pkt = (cmd_entry_t *)req->ring_ptr;
401 cmd_pkt->handle = handle;
402 /* Zero out remaining portion of packet. */
403 clr_ptr = (uint32_t *)cmd_pkt + 2;
404 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
405 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
406
407 /* Set target ID and LUN number*/
408 SET_TARGET_ID(ha, cmd_pkt->target, sp->fcport->loop_id);
409 cmd_pkt->lun = cpu_to_le16(sp->cmd->device->lun);
410
411 /* Update tagged queuing modifier */
412 if (scsi_populate_tag_msg(cmd, tag)) {
413 switch (tag[0]) {
414 case HEAD_OF_QUEUE_TAG:
415 cmd_pkt->control_flags =
416 __constant_cpu_to_le16(CF_HEAD_TAG);
417 break;
418 case ORDERED_QUEUE_TAG:
419 cmd_pkt->control_flags =
420 __constant_cpu_to_le16(CF_ORDERED_TAG);
421 break;
422 default:
423 cmd_pkt->control_flags =
424 __constant_cpu_to_le16(CF_SIMPLE_TAG);
425 break;
426 }
427 }
428
429 /* Load SCSI command packet. */
430 memcpy(cmd_pkt->scsi_cdb, cmd->cmnd, cmd->cmd_len);
431 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
432
433 /* Build IOCB segments */
434 ha->isp_ops->build_iocbs(sp, cmd_pkt, tot_dsds);
435
436 /* Set total data segment count. */
437 cmd_pkt->entry_count = (uint8_t)req_cnt;
438 wmb();
439
440 /* Adjust ring index. */
441 req->ring_index++;
442 if (req->ring_index == req->length) {
443 req->ring_index = 0;
444 req->ring_ptr = req->ring;
445 } else
446 req->ring_ptr++;
447
448 sp->flags |= SRB_DMA_VALID;
449
450 /* Set chip new ring index. */
451 WRT_REG_WORD(ISP_REQ_Q_IN(ha, reg), req->ring_index);
452 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, reg)); /* PCI Posting. */
453
454 /* Manage unprocessed RIO/ZIO commands in response queue. */
455 if (vha->flags.process_response_queue &&
456 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
457 qla2x00_process_response_queue(rsp);
458
459 spin_unlock_irqrestore(&ha->hardware_lock, flags);
460 return (QLA_SUCCESS);
461
462 queuing_error:
463 if (tot_dsds)
464 scsi_dma_unmap(cmd);
465
466 spin_unlock_irqrestore(&ha->hardware_lock, flags);
467
468 return (QLA_FUNCTION_FAILED);
469 }
470
471 /**
472 * qla2x00_marker() - Send a marker IOCB to the firmware.
473 * @ha: HA context
474 * @loop_id: loop ID
475 * @lun: LUN
476 * @type: marker modifier
477 *
478 * Can be called from both normal and interrupt context.
479 *
480 * Returns non-zero if a failure occurred, else zero.
481 */
482 static int
483 __qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
484 struct rsp_que *rsp, uint16_t loop_id,
485 uint16_t lun, uint8_t type)
486 {
487 mrk_entry_t *mrk;
488 struct mrk_entry_24xx *mrk24;
489 struct qla_hw_data *ha = vha->hw;
490 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
491
492 mrk24 = NULL;
493 mrk = (mrk_entry_t *)qla2x00_alloc_iocbs(vha, 0);
494 if (mrk == NULL) {
495 ql_log(ql_log_warn, base_vha, 0x3026,
496 "Failed to allocate Marker IOCB.\n");
497
498 return (QLA_FUNCTION_FAILED);
499 }
500
501 mrk->entry_type = MARKER_TYPE;
502 mrk->modifier = type;
503 if (type != MK_SYNC_ALL) {
504 if (IS_FWI2_CAPABLE(ha)) {
505 mrk24 = (struct mrk_entry_24xx *) mrk;
506 mrk24->nport_handle = cpu_to_le16(loop_id);
507 mrk24->lun[1] = LSB(lun);
508 mrk24->lun[2] = MSB(lun);
509 host_to_fcp_swap(mrk24->lun, sizeof(mrk24->lun));
510 mrk24->vp_index = vha->vp_idx;
511 mrk24->handle = MAKE_HANDLE(req->id, mrk24->handle);
512 } else {
513 SET_TARGET_ID(ha, mrk->target, loop_id);
514 mrk->lun = cpu_to_le16(lun);
515 }
516 }
517 wmb();
518
519 qla2x00_isp_cmd(vha, req);
520
521 return (QLA_SUCCESS);
522 }
523
524 int
525 qla2x00_marker(struct scsi_qla_host *vha, struct req_que *req,
526 struct rsp_que *rsp, uint16_t loop_id, uint16_t lun,
527 uint8_t type)
528 {
529 int ret;
530 unsigned long flags = 0;
531
532 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
533 ret = __qla2x00_marker(vha, req, rsp, loop_id, lun, type);
534 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
535
536 return (ret);
537 }
538
539 /**
540 * qla2x00_isp_cmd() - Modify the request ring pointer.
541 * @ha: HA context
542 *
543 * Note: The caller must hold the hardware lock before calling this routine.
544 */
545 static void
546 qla2x00_isp_cmd(struct scsi_qla_host *vha, struct req_que *req)
547 {
548 struct qla_hw_data *ha = vha->hw;
549 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
550 struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp;
551
552 ql_dbg(ql_dbg_io + ql_dbg_buffer, vha, 0x302d,
553 "IOCB data:\n");
554 ql_dump_buffer(ql_dbg_io + ql_dbg_buffer, vha, 0x302e,
555 (uint8_t *)req->ring_ptr, REQUEST_ENTRY_SIZE);
556
557 /* Adjust ring index. */
558 req->ring_index++;
559 if (req->ring_index == req->length) {
560 req->ring_index = 0;
561 req->ring_ptr = req->ring;
562 } else
563 req->ring_ptr++;
564
565 /* Set chip new ring index. */
566 if (IS_QLA82XX(ha)) {
567 uint32_t dbval = 0x04 | (ha->portnum << 5);
568
569 /* write, read and verify logic */
570 dbval = dbval | (req->id << 8) | (req->ring_index << 16);
571 if (ql2xdbwr)
572 qla82xx_wr_32(ha, ha->nxdb_wr_ptr, dbval);
573 else {
574 WRT_REG_DWORD(
575 (unsigned long __iomem *)ha->nxdb_wr_ptr,
576 dbval);
577 wmb();
578 while (RD_REG_DWORD(ha->nxdb_rd_ptr) != dbval) {
579 WRT_REG_DWORD((unsigned long __iomem *)
580 ha->nxdb_wr_ptr, dbval);
581 wmb();
582 }
583 }
584 } else if (ha->mqenable) {
585 /* Set chip new ring index. */
586 WRT_REG_DWORD(&reg->isp25mq.req_q_in, req->ring_index);
587 RD_REG_DWORD(&ioreg->hccr);
588 } else {
589 if (IS_FWI2_CAPABLE(ha)) {
590 WRT_REG_DWORD(&reg->isp24.req_q_in, req->ring_index);
591 RD_REG_DWORD_RELAXED(&reg->isp24.req_q_in);
592 } else {
593 WRT_REG_WORD(ISP_REQ_Q_IN(ha, &reg->isp),
594 req->ring_index);
595 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, &reg->isp));
596 }
597 }
598
599 }
600
601 /**
602 * qla24xx_calc_iocbs() - Determine number of Command Type 3 and
603 * Continuation Type 1 IOCBs to allocate.
604 *
605 * @dsds: number of data segment decriptors needed
606 *
607 * Returns the number of IOCB entries needed to store @dsds.
608 */
609 inline uint16_t
610 qla24xx_calc_iocbs(scsi_qla_host_t *vha, uint16_t dsds)
611 {
612 uint16_t iocbs;
613
614 iocbs = 1;
615 if (dsds > 1) {
616 iocbs += (dsds - 1) / 5;
617 if ((dsds - 1) % 5)
618 iocbs++;
619 }
620 return iocbs;
621 }
622
623 /**
624 * qla24xx_build_scsi_iocbs() - Build IOCB command utilizing Command Type 7
625 * IOCB types.
626 *
627 * @sp: SRB command to process
628 * @cmd_pkt: Command type 3 IOCB
629 * @tot_dsds: Total number of segments to transfer
630 */
631 inline void
632 qla24xx_build_scsi_iocbs(srb_t *sp, struct cmd_type_7 *cmd_pkt,
633 uint16_t tot_dsds)
634 {
635 uint16_t avail_dsds;
636 uint32_t *cur_dsd;
637 scsi_qla_host_t *vha;
638 struct scsi_cmnd *cmd;
639 struct scatterlist *sg;
640 int i;
641 struct req_que *req;
642
643 cmd = sp->cmd;
644
645 /* Update entry type to indicate Command Type 3 IOCB */
646 *((uint32_t *)(&cmd_pkt->entry_type)) =
647 __constant_cpu_to_le32(COMMAND_TYPE_7);
648
649 /* No data transfer */
650 if (!scsi_bufflen(cmd) || cmd->sc_data_direction == DMA_NONE) {
651 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
652 return;
653 }
654
655 vha = sp->fcport->vha;
656 req = vha->req;
657
658 /* Set transfer direction */
659 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
660 cmd_pkt->task_mgmt_flags =
661 __constant_cpu_to_le16(TMF_WRITE_DATA);
662 sp->fcport->vha->hw->qla_stats.output_bytes +=
663 scsi_bufflen(sp->cmd);
664 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
665 cmd_pkt->task_mgmt_flags =
666 __constant_cpu_to_le16(TMF_READ_DATA);
667 sp->fcport->vha->hw->qla_stats.input_bytes +=
668 scsi_bufflen(sp->cmd);
669 }
670
671 /* One DSD is available in the Command Type 3 IOCB */
672 avail_dsds = 1;
673 cur_dsd = (uint32_t *)&cmd_pkt->dseg_0_address;
674
675 /* Load data segments */
676
677 scsi_for_each_sg(cmd, sg, tot_dsds, i) {
678 dma_addr_t sle_dma;
679 cont_a64_entry_t *cont_pkt;
680
681 /* Allocate additional continuation packets? */
682 if (avail_dsds == 0) {
683 /*
684 * Five DSDs are available in the Continuation
685 * Type 1 IOCB.
686 */
687 cont_pkt = qla2x00_prep_cont_type1_iocb(vha);
688 cur_dsd = (uint32_t *)cont_pkt->dseg_0_address;
689 avail_dsds = 5;
690 }
691
692 sle_dma = sg_dma_address(sg);
693 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
694 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
695 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
696 avail_dsds--;
697 }
698 }
699
700 struct fw_dif_context {
701 uint32_t ref_tag;
702 uint16_t app_tag;
703 uint8_t ref_tag_mask[4]; /* Validation/Replacement Mask*/
704 uint8_t app_tag_mask[2]; /* Validation/Replacement Mask*/
705 };
706
707 /*
708 * qla24xx_set_t10dif_tags_from_cmd - Extract Ref and App tags from SCSI command
709 *
710 */
711 static inline void
712 qla24xx_set_t10dif_tags(srb_t *sp, struct fw_dif_context *pkt,
713 unsigned int protcnt)
714 {
715 struct scsi_cmnd *cmd = sp->cmd;
716 scsi_qla_host_t *vha = shost_priv(cmd->device->host);
717
718 switch (scsi_get_prot_type(cmd)) {
719 case SCSI_PROT_DIF_TYPE0:
720 /*
721 * No check for ql2xenablehba_err_chk, as it would be an
722 * I/O error if hba tag generation is not done.
723 */
724 pkt->ref_tag = cpu_to_le32((uint32_t)
725 (0xffffffff & scsi_get_lba(cmd)));
726
727 if (!qla2x00_hba_err_chk_enabled(sp))
728 break;
729
730 pkt->ref_tag_mask[0] = 0xff;
731 pkt->ref_tag_mask[1] = 0xff;
732 pkt->ref_tag_mask[2] = 0xff;
733 pkt->ref_tag_mask[3] = 0xff;
734 break;
735
736 /*
737 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
738 * match LBA in CDB + N
739 */
740 case SCSI_PROT_DIF_TYPE2:
741 pkt->app_tag = __constant_cpu_to_le16(0);
742 pkt->app_tag_mask[0] = 0x0;
743 pkt->app_tag_mask[1] = 0x0;
744
745 pkt->ref_tag = cpu_to_le32((uint32_t)
746 (0xffffffff & scsi_get_lba(cmd)));
747
748 if (!qla2x00_hba_err_chk_enabled(sp))
749 break;
750
751 /* enable ALL bytes of the ref tag */
752 pkt->ref_tag_mask[0] = 0xff;
753 pkt->ref_tag_mask[1] = 0xff;
754 pkt->ref_tag_mask[2] = 0xff;
755 pkt->ref_tag_mask[3] = 0xff;
756 break;
757
758 /* For Type 3 protection: 16 bit GUARD only */
759 case SCSI_PROT_DIF_TYPE3:
760 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] =
761 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] =
762 0x00;
763 break;
764
765 /*
766 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
767 * 16 bit app tag.
768 */
769 case SCSI_PROT_DIF_TYPE1:
770 pkt->ref_tag = cpu_to_le32((uint32_t)
771 (0xffffffff & scsi_get_lba(cmd)));
772 pkt->app_tag = __constant_cpu_to_le16(0);
773 pkt->app_tag_mask[0] = 0x0;
774 pkt->app_tag_mask[1] = 0x0;
775
776 if (!qla2x00_hba_err_chk_enabled(sp))
777 break;
778
779 /* enable ALL bytes of the ref tag */
780 pkt->ref_tag_mask[0] = 0xff;
781 pkt->ref_tag_mask[1] = 0xff;
782 pkt->ref_tag_mask[2] = 0xff;
783 pkt->ref_tag_mask[3] = 0xff;
784 break;
785 }
786
787 ql_dbg(ql_dbg_io, vha, 0x3009,
788 "Setting protection Tags: (BIG) ref tag = 0x%x, app tag = 0x%x, "
789 "prot SG count %d, cmd lba 0x%x, prot_type=%u cmd=%p.\n",
790 pkt->ref_tag, pkt->app_tag, protcnt, (int)scsi_get_lba(cmd),
791 scsi_get_prot_type(cmd), cmd);
792 }
793
794 struct qla2_sgx {
795 dma_addr_t dma_addr; /* OUT */
796 uint32_t dma_len; /* OUT */
797
798 uint32_t tot_bytes; /* IN */
799 struct scatterlist *cur_sg; /* IN */
800
801 /* for book keeping, bzero on initial invocation */
802 uint32_t bytes_consumed;
803 uint32_t num_bytes;
804 uint32_t tot_partial;
805
806 /* for debugging */
807 uint32_t num_sg;
808 srb_t *sp;
809 };
810
811 static int
812 qla24xx_get_one_block_sg(uint32_t blk_sz, struct qla2_sgx *sgx,
813 uint32_t *partial)
814 {
815 struct scatterlist *sg;
816 uint32_t cumulative_partial, sg_len;
817 dma_addr_t sg_dma_addr;
818
819 if (sgx->num_bytes == sgx->tot_bytes)
820 return 0;
821
822 sg = sgx->cur_sg;
823 cumulative_partial = sgx->tot_partial;
824
825 sg_dma_addr = sg_dma_address(sg);
826 sg_len = sg_dma_len(sg);
827
828 sgx->dma_addr = sg_dma_addr + sgx->bytes_consumed;
829
830 if ((cumulative_partial + (sg_len - sgx->bytes_consumed)) >= blk_sz) {
831 sgx->dma_len = (blk_sz - cumulative_partial);
832 sgx->tot_partial = 0;
833 sgx->num_bytes += blk_sz;
834 *partial = 0;
835 } else {
836 sgx->dma_len = sg_len - sgx->bytes_consumed;
837 sgx->tot_partial += sgx->dma_len;
838 *partial = 1;
839 }
840
841 sgx->bytes_consumed += sgx->dma_len;
842
843 if (sg_len == sgx->bytes_consumed) {
844 sg = sg_next(sg);
845 sgx->num_sg++;
846 sgx->cur_sg = sg;
847 sgx->bytes_consumed = 0;
848 }
849
850 return 1;
851 }
852
853 static int
854 qla24xx_walk_and_build_sglist_no_difb(struct qla_hw_data *ha, srb_t *sp,
855 uint32_t *dsd, uint16_t tot_dsds)
856 {
857 void *next_dsd;
858 uint8_t avail_dsds = 0;
859 uint32_t dsd_list_len;
860 struct dsd_dma *dsd_ptr;
861 struct scatterlist *sg_prot;
862 uint32_t *cur_dsd = dsd;
863 uint16_t used_dsds = tot_dsds;
864
865 uint32_t prot_int;
866 uint32_t partial;
867 struct qla2_sgx sgx;
868 dma_addr_t sle_dma;
869 uint32_t sle_dma_len, tot_prot_dma_len = 0;
870 struct scsi_cmnd *cmd = sp->cmd;
871
872 prot_int = cmd->device->sector_size;
873
874 memset(&sgx, 0, sizeof(struct qla2_sgx));
875 sgx.tot_bytes = scsi_bufflen(sp->cmd);
876 sgx.cur_sg = scsi_sglist(sp->cmd);
877 sgx.sp = sp;
878
879 sg_prot = scsi_prot_sglist(sp->cmd);
880
881 while (qla24xx_get_one_block_sg(prot_int, &sgx, &partial)) {
882
883 sle_dma = sgx.dma_addr;
884 sle_dma_len = sgx.dma_len;
885 alloc_and_fill:
886 /* Allocate additional continuation packets? */
887 if (avail_dsds == 0) {
888 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
889 QLA_DSDS_PER_IOCB : used_dsds;
890 dsd_list_len = (avail_dsds + 1) * 12;
891 used_dsds -= avail_dsds;
892
893 /* allocate tracking DS */
894 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
895 if (!dsd_ptr)
896 return 1;
897
898 /* allocate new list */
899 dsd_ptr->dsd_addr = next_dsd =
900 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
901 &dsd_ptr->dsd_list_dma);
902
903 if (!next_dsd) {
904 /*
905 * Need to cleanup only this dsd_ptr, rest
906 * will be done by sp_free_dma()
907 */
908 kfree(dsd_ptr);
909 return 1;
910 }
911
912 list_add_tail(&dsd_ptr->list,
913 &((struct crc_context *)sp->ctx)->dsd_list);
914
915 sp->flags |= SRB_CRC_CTX_DSD_VALID;
916
917 /* add new list to cmd iocb or last list */
918 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
919 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
920 *cur_dsd++ = dsd_list_len;
921 cur_dsd = (uint32_t *)next_dsd;
922 }
923 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
924 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
925 *cur_dsd++ = cpu_to_le32(sle_dma_len);
926 avail_dsds--;
927
928 if (partial == 0) {
929 /* Got a full protection interval */
930 sle_dma = sg_dma_address(sg_prot) + tot_prot_dma_len;
931 sle_dma_len = 8;
932
933 tot_prot_dma_len += sle_dma_len;
934 if (tot_prot_dma_len == sg_dma_len(sg_prot)) {
935 tot_prot_dma_len = 0;
936 sg_prot = sg_next(sg_prot);
937 }
938
939 partial = 1; /* So as to not re-enter this block */
940 goto alloc_and_fill;
941 }
942 }
943 /* Null termination */
944 *cur_dsd++ = 0;
945 *cur_dsd++ = 0;
946 *cur_dsd++ = 0;
947 return 0;
948 }
949 static int
950 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
951 uint16_t tot_dsds)
952 {
953 void *next_dsd;
954 uint8_t avail_dsds = 0;
955 uint32_t dsd_list_len;
956 struct dsd_dma *dsd_ptr;
957 struct scatterlist *sg;
958 uint32_t *cur_dsd = dsd;
959 int i;
960 uint16_t used_dsds = tot_dsds;
961 scsi_qla_host_t *vha = shost_priv(sp->cmd->device->host);
962
963 uint8_t *cp;
964
965 scsi_for_each_sg(sp->cmd, sg, tot_dsds, i) {
966 dma_addr_t sle_dma;
967
968 /* Allocate additional continuation packets? */
969 if (avail_dsds == 0) {
970 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
971 QLA_DSDS_PER_IOCB : used_dsds;
972 dsd_list_len = (avail_dsds + 1) * 12;
973 used_dsds -= avail_dsds;
974
975 /* allocate tracking DS */
976 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
977 if (!dsd_ptr)
978 return 1;
979
980 /* allocate new list */
981 dsd_ptr->dsd_addr = next_dsd =
982 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
983 &dsd_ptr->dsd_list_dma);
984
985 if (!next_dsd) {
986 /*
987 * Need to cleanup only this dsd_ptr, rest
988 * will be done by sp_free_dma()
989 */
990 kfree(dsd_ptr);
991 return 1;
992 }
993
994 list_add_tail(&dsd_ptr->list,
995 &((struct crc_context *)sp->ctx)->dsd_list);
996
997 sp->flags |= SRB_CRC_CTX_DSD_VALID;
998
999 /* add new list to cmd iocb or last list */
1000 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1001 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1002 *cur_dsd++ = dsd_list_len;
1003 cur_dsd = (uint32_t *)next_dsd;
1004 }
1005 sle_dma = sg_dma_address(sg);
1006 ql_dbg(ql_dbg_io, vha, 0x300a,
1007 "sg entry %d - addr=0x%x 0x%x, " "len=%d for cmd=%p.\n",
1008 cur_dsd, i, LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg),
1009 sp->cmd);
1010 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1011 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1012 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1013 avail_dsds--;
1014
1015 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) {
1016 cp = page_address(sg_page(sg)) + sg->offset;
1017 ql_dbg(ql_dbg_io, vha, 0x300b,
1018 "User data buffer=%p for cmd=%p.\n", cp, sp->cmd);
1019 }
1020 }
1021 /* Null termination */
1022 *cur_dsd++ = 0;
1023 *cur_dsd++ = 0;
1024 *cur_dsd++ = 0;
1025 return 0;
1026 }
1027
1028 static int
1029 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
1030 uint32_t *dsd,
1031 uint16_t tot_dsds)
1032 {
1033 void *next_dsd;
1034 uint8_t avail_dsds = 0;
1035 uint32_t dsd_list_len;
1036 struct dsd_dma *dsd_ptr;
1037 struct scatterlist *sg;
1038 int i;
1039 struct scsi_cmnd *cmd;
1040 uint32_t *cur_dsd = dsd;
1041 uint16_t used_dsds = tot_dsds;
1042 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1043 uint8_t *cp;
1044
1045
1046 cmd = sp->cmd;
1047 scsi_for_each_prot_sg(cmd, sg, tot_dsds, i) {
1048 dma_addr_t sle_dma;
1049
1050 /* Allocate additional continuation packets? */
1051 if (avail_dsds == 0) {
1052 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
1053 QLA_DSDS_PER_IOCB : used_dsds;
1054 dsd_list_len = (avail_dsds + 1) * 12;
1055 used_dsds -= avail_dsds;
1056
1057 /* allocate tracking DS */
1058 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
1059 if (!dsd_ptr)
1060 return 1;
1061
1062 /* allocate new list */
1063 dsd_ptr->dsd_addr = next_dsd =
1064 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
1065 &dsd_ptr->dsd_list_dma);
1066
1067 if (!next_dsd) {
1068 /*
1069 * Need to cleanup only this dsd_ptr, rest
1070 * will be done by sp_free_dma()
1071 */
1072 kfree(dsd_ptr);
1073 return 1;
1074 }
1075
1076 list_add_tail(&dsd_ptr->list,
1077 &((struct crc_context *)sp->ctx)->dsd_list);
1078
1079 sp->flags |= SRB_CRC_CTX_DSD_VALID;
1080
1081 /* add new list to cmd iocb or last list */
1082 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
1083 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
1084 *cur_dsd++ = dsd_list_len;
1085 cur_dsd = (uint32_t *)next_dsd;
1086 }
1087 sle_dma = sg_dma_address(sg);
1088 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) {
1089 ql_dbg(ql_dbg_io, vha, 0x3027,
1090 "%s(): %p, sg_entry %d - "
1091 "addr=0x%x0x%x, len=%d.\n",
1092 __func__, cur_dsd, i,
1093 LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg));
1094 }
1095 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1096 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1097 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1098
1099 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) {
1100 cp = page_address(sg_page(sg)) + sg->offset;
1101 ql_dbg(ql_dbg_io, vha, 0x3028,
1102 "%s(): Protection Data buffer = %p.\n", __func__,
1103 cp);
1104 }
1105 avail_dsds--;
1106 }
1107 /* Null termination */
1108 *cur_dsd++ = 0;
1109 *cur_dsd++ = 0;
1110 *cur_dsd++ = 0;
1111 return 0;
1112 }
1113
1114 /**
1115 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command
1116 * Type 6 IOCB types.
1117 *
1118 * @sp: SRB command to process
1119 * @cmd_pkt: Command type 3 IOCB
1120 * @tot_dsds: Total number of segments to transfer
1121 */
1122 static inline int
1123 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
1124 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts)
1125 {
1126 uint32_t *cur_dsd, *fcp_dl;
1127 scsi_qla_host_t *vha;
1128 struct scsi_cmnd *cmd;
1129 struct scatterlist *cur_seg;
1130 int sgc;
1131 uint32_t total_bytes = 0;
1132 uint32_t data_bytes;
1133 uint32_t dif_bytes;
1134 uint8_t bundling = 1;
1135 uint16_t blk_size;
1136 uint8_t *clr_ptr;
1137 struct crc_context *crc_ctx_pkt = NULL;
1138 struct qla_hw_data *ha;
1139 uint8_t additional_fcpcdb_len;
1140 uint16_t fcp_cmnd_len;
1141 struct fcp_cmnd *fcp_cmnd;
1142 dma_addr_t crc_ctx_dma;
1143 char tag[2];
1144
1145 cmd = sp->cmd;
1146
1147 sgc = 0;
1148 /* Update entry type to indicate Command Type CRC_2 IOCB */
1149 *((uint32_t *)(&cmd_pkt->entry_type)) =
1150 __constant_cpu_to_le32(COMMAND_TYPE_CRC_2);
1151
1152 vha = sp->fcport->vha;
1153 ha = vha->hw;
1154
1155 /* No data transfer */
1156 data_bytes = scsi_bufflen(cmd);
1157 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1158 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
1159 return QLA_SUCCESS;
1160 }
1161
1162 cmd_pkt->vp_index = sp->fcport->vp_idx;
1163
1164 /* Set transfer direction */
1165 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
1166 cmd_pkt->control_flags =
1167 __constant_cpu_to_le16(CF_WRITE_DATA);
1168 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
1169 cmd_pkt->control_flags =
1170 __constant_cpu_to_le16(CF_READ_DATA);
1171 }
1172
1173 if ((scsi_get_prot_op(sp->cmd) == SCSI_PROT_READ_INSERT) ||
1174 (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_STRIP) ||
1175 (scsi_get_prot_op(sp->cmd) == SCSI_PROT_READ_STRIP) ||
1176 (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_INSERT))
1177 bundling = 0;
1178
1179 /* Allocate CRC context from global pool */
1180 crc_ctx_pkt = sp->ctx = dma_pool_alloc(ha->dl_dma_pool,
1181 GFP_ATOMIC, &crc_ctx_dma);
1182
1183 if (!crc_ctx_pkt)
1184 goto crc_queuing_error;
1185
1186 /* Zero out CTX area. */
1187 clr_ptr = (uint8_t *)crc_ctx_pkt;
1188 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
1189
1190 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
1191
1192 sp->flags |= SRB_CRC_CTX_DMA_VALID;
1193
1194 /* Set handle */
1195 crc_ctx_pkt->handle = cmd_pkt->handle;
1196
1197 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
1198
1199 qla24xx_set_t10dif_tags(sp, (struct fw_dif_context *)
1200 &crc_ctx_pkt->ref_tag, tot_prot_dsds);
1201
1202 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
1203 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
1204 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
1205
1206 /* Determine SCSI command length -- align to 4 byte boundary */
1207 if (cmd->cmd_len > 16) {
1208 additional_fcpcdb_len = cmd->cmd_len - 16;
1209 if ((cmd->cmd_len % 4) != 0) {
1210 /* SCSI cmd > 16 bytes must be multiple of 4 */
1211 goto crc_queuing_error;
1212 }
1213 fcp_cmnd_len = 12 + cmd->cmd_len + 4;
1214 } else {
1215 additional_fcpcdb_len = 0;
1216 fcp_cmnd_len = 12 + 16 + 4;
1217 }
1218
1219 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd;
1220
1221 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len;
1222 if (cmd->sc_data_direction == DMA_TO_DEVICE)
1223 fcp_cmnd->additional_cdb_len |= 1;
1224 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
1225 fcp_cmnd->additional_cdb_len |= 2;
1226
1227 int_to_scsilun(sp->cmd->device->lun, &fcp_cmnd->lun);
1228 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
1229 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len);
1230 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32(
1231 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1232 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32(
1233 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1234 fcp_cmnd->task_management = 0;
1235
1236 /*
1237 * Update tagged queuing modifier if using command tag queuing
1238 */
1239 if (scsi_populate_tag_msg(cmd, tag)) {
1240 switch (tag[0]) {
1241 case HEAD_OF_QUEUE_TAG:
1242 fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE;
1243 break;
1244 case ORDERED_QUEUE_TAG:
1245 fcp_cmnd->task_attribute = TSK_ORDERED;
1246 break;
1247 default:
1248 fcp_cmnd->task_attribute = 0;
1249 break;
1250 }
1251 } else {
1252 fcp_cmnd->task_attribute = 0;
1253 }
1254
1255 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
1256
1257 /* Compute dif len and adjust data len to incude protection */
1258 dif_bytes = 0;
1259 blk_size = cmd->device->sector_size;
1260 dif_bytes = (data_bytes / blk_size) * 8;
1261
1262 switch (scsi_get_prot_op(sp->cmd)) {
1263 case SCSI_PROT_READ_INSERT:
1264 case SCSI_PROT_WRITE_STRIP:
1265 total_bytes = data_bytes;
1266 data_bytes += dif_bytes;
1267 break;
1268
1269 case SCSI_PROT_READ_STRIP:
1270 case SCSI_PROT_WRITE_INSERT:
1271 case SCSI_PROT_READ_PASS:
1272 case SCSI_PROT_WRITE_PASS:
1273 total_bytes = data_bytes + dif_bytes;
1274 break;
1275 default:
1276 BUG();
1277 }
1278
1279 if (!qla2x00_hba_err_chk_enabled(sp))
1280 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
1281
1282 if (!bundling) {
1283 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
1284 } else {
1285 /*
1286 * Configure Bundling if we need to fetch interlaving
1287 * protection PCI accesses
1288 */
1289 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
1290 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
1291 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds -
1292 tot_prot_dsds);
1293 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
1294 }
1295
1296 /* Finish the common fields of CRC pkt */
1297 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size);
1298 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
1299 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
1300 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
1301 /* Fibre channel byte count */
1302 cmd_pkt->byte_count = cpu_to_le32(total_bytes);
1303 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 +
1304 additional_fcpcdb_len);
1305 *fcp_dl = htonl(total_bytes);
1306
1307 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1308 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
1309 return QLA_SUCCESS;
1310 }
1311 /* Walks data segments */
1312
1313 cmd_pkt->control_flags |=
1314 __constant_cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE);
1315
1316 if (!bundling && tot_prot_dsds) {
1317 if (qla24xx_walk_and_build_sglist_no_difb(ha, sp,
1318 cur_dsd, tot_dsds))
1319 goto crc_queuing_error;
1320 } else if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd,
1321 (tot_dsds - tot_prot_dsds)))
1322 goto crc_queuing_error;
1323
1324 if (bundling && tot_prot_dsds) {
1325 /* Walks dif segments */
1326 cur_seg = scsi_prot_sglist(cmd);
1327 cmd_pkt->control_flags |=
1328 __constant_cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE);
1329 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
1330 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd,
1331 tot_prot_dsds))
1332 goto crc_queuing_error;
1333 }
1334 return QLA_SUCCESS;
1335
1336 crc_queuing_error:
1337 /* Cleanup will be performed by the caller */
1338
1339 return QLA_FUNCTION_FAILED;
1340 }
1341
1342 /**
1343 * qla24xx_start_scsi() - Send a SCSI command to the ISP
1344 * @sp: command to send to the ISP
1345 *
1346 * Returns non-zero if a failure occurred, else zero.
1347 */
1348 int
1349 qla24xx_start_scsi(srb_t *sp)
1350 {
1351 int ret, nseg;
1352 unsigned long flags;
1353 uint32_t *clr_ptr;
1354 uint32_t index;
1355 uint32_t handle;
1356 struct cmd_type_7 *cmd_pkt;
1357 uint16_t cnt;
1358 uint16_t req_cnt;
1359 uint16_t tot_dsds;
1360 struct req_que *req = NULL;
1361 struct rsp_que *rsp = NULL;
1362 struct scsi_cmnd *cmd = sp->cmd;
1363 struct scsi_qla_host *vha = sp->fcport->vha;
1364 struct qla_hw_data *ha = vha->hw;
1365 char tag[2];
1366
1367 /* Setup device pointers. */
1368 ret = 0;
1369
1370 qla25xx_set_que(sp, &rsp);
1371 req = vha->req;
1372
1373 /* So we know we haven't pci_map'ed anything yet */
1374 tot_dsds = 0;
1375
1376 /* Send marker if required */
1377 if (vha->marker_needed != 0) {
1378 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1379 QLA_SUCCESS)
1380 return QLA_FUNCTION_FAILED;
1381 vha->marker_needed = 0;
1382 }
1383
1384 /* Acquire ring specific lock */
1385 spin_lock_irqsave(&ha->hardware_lock, flags);
1386
1387 /* Check for room in outstanding command list. */
1388 handle = req->current_outstanding_cmd;
1389 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
1390 handle++;
1391 if (handle == MAX_OUTSTANDING_COMMANDS)
1392 handle = 1;
1393 if (!req->outstanding_cmds[handle])
1394 break;
1395 }
1396 if (index == MAX_OUTSTANDING_COMMANDS) {
1397 goto queuing_error;
1398 }
1399
1400 /* Map the sg table so we have an accurate count of sg entries needed */
1401 if (scsi_sg_count(cmd)) {
1402 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1403 scsi_sg_count(cmd), cmd->sc_data_direction);
1404 if (unlikely(!nseg))
1405 goto queuing_error;
1406 } else
1407 nseg = 0;
1408
1409 tot_dsds = nseg;
1410 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
1411 if (req->cnt < (req_cnt + 2)) {
1412 cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
1413
1414 if (req->ring_index < cnt)
1415 req->cnt = cnt - req->ring_index;
1416 else
1417 req->cnt = req->length -
1418 (req->ring_index - cnt);
1419 }
1420 if (req->cnt < (req_cnt + 2))
1421 goto queuing_error;
1422
1423 /* Build command packet. */
1424 req->current_outstanding_cmd = handle;
1425 req->outstanding_cmds[handle] = sp;
1426 sp->handle = handle;
1427 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1428 req->cnt -= req_cnt;
1429
1430 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
1431 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1432
1433 /* Zero out remaining portion of packet. */
1434 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
1435 clr_ptr = (uint32_t *)cmd_pkt + 2;
1436 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1437 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1438
1439 /* Set NPORT-ID and LUN number*/
1440 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1441 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1442 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1443 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1444 cmd_pkt->vp_index = sp->fcport->vp_idx;
1445
1446 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun);
1447 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1448
1449 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */
1450 if (scsi_populate_tag_msg(cmd, tag)) {
1451 switch (tag[0]) {
1452 case HEAD_OF_QUEUE_TAG:
1453 cmd_pkt->task = TSK_HEAD_OF_QUEUE;
1454 break;
1455 case ORDERED_QUEUE_TAG:
1456 cmd_pkt->task = TSK_ORDERED;
1457 break;
1458 }
1459 }
1460
1461 /* Load SCSI command packet. */
1462 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
1463 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
1464
1465 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
1466
1467 /* Build IOCB segments */
1468 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
1469
1470 /* Set total data segment count. */
1471 cmd_pkt->entry_count = (uint8_t)req_cnt;
1472 /* Specify response queue number where completion should happen */
1473 cmd_pkt->entry_status = (uint8_t) rsp->id;
1474 wmb();
1475 /* Adjust ring index. */
1476 req->ring_index++;
1477 if (req->ring_index == req->length) {
1478 req->ring_index = 0;
1479 req->ring_ptr = req->ring;
1480 } else
1481 req->ring_ptr++;
1482
1483 sp->flags |= SRB_DMA_VALID;
1484
1485 /* Set chip new ring index. */
1486 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1487 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1488
1489 /* Manage unprocessed RIO/ZIO commands in response queue. */
1490 if (vha->flags.process_response_queue &&
1491 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1492 qla24xx_process_response_queue(vha, rsp);
1493
1494 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1495 return QLA_SUCCESS;
1496
1497 queuing_error:
1498 if (tot_dsds)
1499 scsi_dma_unmap(cmd);
1500
1501 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1502
1503 return QLA_FUNCTION_FAILED;
1504 }
1505
1506
1507 /**
1508 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP
1509 * @sp: command to send to the ISP
1510 *
1511 * Returns non-zero if a failure occurred, else zero.
1512 */
1513 int
1514 qla24xx_dif_start_scsi(srb_t *sp)
1515 {
1516 int nseg;
1517 unsigned long flags;
1518 uint32_t *clr_ptr;
1519 uint32_t index;
1520 uint32_t handle;
1521 uint16_t cnt;
1522 uint16_t req_cnt = 0;
1523 uint16_t tot_dsds;
1524 uint16_t tot_prot_dsds;
1525 uint16_t fw_prot_opts = 0;
1526 struct req_que *req = NULL;
1527 struct rsp_que *rsp = NULL;
1528 struct scsi_cmnd *cmd = sp->cmd;
1529 struct scsi_qla_host *vha = sp->fcport->vha;
1530 struct qla_hw_data *ha = vha->hw;
1531 struct cmd_type_crc_2 *cmd_pkt;
1532 uint32_t status = 0;
1533
1534 #define QDSS_GOT_Q_SPACE BIT_0
1535
1536 /* Only process protection or >16 cdb in this routine */
1537 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
1538 if (cmd->cmd_len <= 16)
1539 return qla24xx_start_scsi(sp);
1540 }
1541
1542 /* Setup device pointers. */
1543
1544 qla25xx_set_que(sp, &rsp);
1545 req = vha->req;
1546
1547 /* So we know we haven't pci_map'ed anything yet */
1548 tot_dsds = 0;
1549
1550 /* Send marker if required */
1551 if (vha->marker_needed != 0) {
1552 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1553 QLA_SUCCESS)
1554 return QLA_FUNCTION_FAILED;
1555 vha->marker_needed = 0;
1556 }
1557
1558 /* Acquire ring specific lock */
1559 spin_lock_irqsave(&ha->hardware_lock, flags);
1560
1561 /* Check for room in outstanding command list. */
1562 handle = req->current_outstanding_cmd;
1563 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
1564 handle++;
1565 if (handle == MAX_OUTSTANDING_COMMANDS)
1566 handle = 1;
1567 if (!req->outstanding_cmds[handle])
1568 break;
1569 }
1570
1571 if (index == MAX_OUTSTANDING_COMMANDS)
1572 goto queuing_error;
1573
1574 /* Compute number of required data segments */
1575 /* Map the sg table so we have an accurate count of sg entries needed */
1576 if (scsi_sg_count(cmd)) {
1577 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1578 scsi_sg_count(cmd), cmd->sc_data_direction);
1579 if (unlikely(!nseg))
1580 goto queuing_error;
1581 else
1582 sp->flags |= SRB_DMA_VALID;
1583
1584 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1585 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1586 struct qla2_sgx sgx;
1587 uint32_t partial;
1588
1589 memset(&sgx, 0, sizeof(struct qla2_sgx));
1590 sgx.tot_bytes = scsi_bufflen(cmd);
1591 sgx.cur_sg = scsi_sglist(cmd);
1592 sgx.sp = sp;
1593
1594 nseg = 0;
1595 while (qla24xx_get_one_block_sg(
1596 cmd->device->sector_size, &sgx, &partial))
1597 nseg++;
1598 }
1599 } else
1600 nseg = 0;
1601
1602 /* number of required data segments */
1603 tot_dsds = nseg;
1604
1605 /* Compute number of required protection segments */
1606 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
1607 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
1608 scsi_prot_sg_count(cmd), cmd->sc_data_direction);
1609 if (unlikely(!nseg))
1610 goto queuing_error;
1611 else
1612 sp->flags |= SRB_CRC_PROT_DMA_VALID;
1613
1614 if ((scsi_get_prot_op(cmd) == SCSI_PROT_READ_INSERT) ||
1615 (scsi_get_prot_op(cmd) == SCSI_PROT_WRITE_STRIP)) {
1616 nseg = scsi_bufflen(cmd) / cmd->device->sector_size;
1617 }
1618 } else {
1619 nseg = 0;
1620 }
1621
1622 req_cnt = 1;
1623 /* Total Data and protection sg segment(s) */
1624 tot_prot_dsds = nseg;
1625 tot_dsds += nseg;
1626 if (req->cnt < (req_cnt + 2)) {
1627 cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
1628
1629 if (req->ring_index < cnt)
1630 req->cnt = cnt - req->ring_index;
1631 else
1632 req->cnt = req->length -
1633 (req->ring_index - cnt);
1634 }
1635
1636 if (req->cnt < (req_cnt + 2))
1637 goto queuing_error;
1638
1639 status |= QDSS_GOT_Q_SPACE;
1640
1641 /* Build header part of command packet (excluding the OPCODE). */
1642 req->current_outstanding_cmd = handle;
1643 req->outstanding_cmds[handle] = sp;
1644 sp->handle = handle;
1645 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1646 req->cnt -= req_cnt;
1647
1648 /* Fill-in common area */
1649 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
1650 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1651
1652 clr_ptr = (uint32_t *)cmd_pkt + 2;
1653 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1654
1655 /* Set NPORT-ID and LUN number*/
1656 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1657 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1658 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1659 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1660
1661 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun);
1662 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1663
1664 /* Total Data and protection segment(s) */
1665 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1666
1667 /* Build IOCB segments and adjust for data protection segments */
1668 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
1669 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
1670 QLA_SUCCESS)
1671 goto queuing_error;
1672
1673 cmd_pkt->entry_count = (uint8_t)req_cnt;
1674 /* Specify response queue number where completion should happen */
1675 cmd_pkt->entry_status = (uint8_t) rsp->id;
1676 cmd_pkt->timeout = __constant_cpu_to_le16(0);
1677 wmb();
1678
1679 /* Adjust ring index. */
1680 req->ring_index++;
1681 if (req->ring_index == req->length) {
1682 req->ring_index = 0;
1683 req->ring_ptr = req->ring;
1684 } else
1685 req->ring_ptr++;
1686
1687 /* Set chip new ring index. */
1688 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1689 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1690
1691 /* Manage unprocessed RIO/ZIO commands in response queue. */
1692 if (vha->flags.process_response_queue &&
1693 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1694 qla24xx_process_response_queue(vha, rsp);
1695
1696 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1697
1698 return QLA_SUCCESS;
1699
1700 queuing_error:
1701 if (status & QDSS_GOT_Q_SPACE) {
1702 req->outstanding_cmds[handle] = NULL;
1703 req->cnt += req_cnt;
1704 }
1705 /* Cleanup will be performed by the caller (queuecommand) */
1706
1707 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1708 return QLA_FUNCTION_FAILED;
1709 }
1710
1711
1712 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp)
1713 {
1714 struct scsi_cmnd *cmd = sp->cmd;
1715 struct qla_hw_data *ha = sp->fcport->vha->hw;
1716 int affinity = cmd->request->cpu;
1717
1718 if (ha->flags.cpu_affinity_enabled && affinity >= 0 &&
1719 affinity < ha->max_rsp_queues - 1)
1720 *rsp = ha->rsp_q_map[affinity + 1];
1721 else
1722 *rsp = ha->rsp_q_map[0];
1723 }
1724
1725 /* Generic Control-SRB manipulation functions. */
1726 void *
1727 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp)
1728 {
1729 struct qla_hw_data *ha = vha->hw;
1730 struct req_que *req = ha->req_q_map[0];
1731 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
1732 uint32_t index, handle;
1733 request_t *pkt;
1734 uint16_t cnt, req_cnt;
1735
1736 pkt = NULL;
1737 req_cnt = 1;
1738 handle = 0;
1739
1740 if (!sp)
1741 goto skip_cmd_array;
1742
1743 /* Check for room in outstanding command list. */
1744 handle = req->current_outstanding_cmd;
1745 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
1746 handle++;
1747 if (handle == MAX_OUTSTANDING_COMMANDS)
1748 handle = 1;
1749 if (!req->outstanding_cmds[handle])
1750 break;
1751 }
1752 if (index == MAX_OUTSTANDING_COMMANDS) {
1753 ql_log(ql_log_warn, vha, 0x700b,
1754 "No room on oustanding cmd array.\n");
1755 goto queuing_error;
1756 }
1757
1758 /* Prep command array. */
1759 req->current_outstanding_cmd = handle;
1760 req->outstanding_cmds[handle] = sp;
1761 sp->handle = handle;
1762
1763 skip_cmd_array:
1764 /* Check for room on request queue. */
1765 if (req->cnt < req_cnt) {
1766 if (ha->mqenable)
1767 cnt = RD_REG_DWORD(&reg->isp25mq.req_q_out);
1768 else if (IS_QLA82XX(ha))
1769 cnt = RD_REG_DWORD(&reg->isp82.req_q_out);
1770 else if (IS_FWI2_CAPABLE(ha))
1771 cnt = RD_REG_DWORD(&reg->isp24.req_q_out);
1772 else
1773 cnt = qla2x00_debounce_register(
1774 ISP_REQ_Q_OUT(ha, &reg->isp));
1775
1776 if (req->ring_index < cnt)
1777 req->cnt = cnt - req->ring_index;
1778 else
1779 req->cnt = req->length -
1780 (req->ring_index - cnt);
1781 }
1782 if (req->cnt < req_cnt)
1783 goto queuing_error;
1784
1785 /* Prep packet */
1786 req->cnt -= req_cnt;
1787 pkt = req->ring_ptr;
1788 memset(pkt, 0, REQUEST_ENTRY_SIZE);
1789 pkt->entry_count = req_cnt;
1790 pkt->handle = handle;
1791
1792 queuing_error:
1793 return pkt;
1794 }
1795
1796 static void
1797 qla2x00_start_iocbs(srb_t *sp)
1798 {
1799 struct qla_hw_data *ha = sp->fcport->vha->hw;
1800 struct req_que *req = ha->req_q_map[0];
1801 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
1802 struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp;
1803
1804 if (IS_QLA82XX(ha)) {
1805 qla82xx_start_iocbs(sp);
1806 } else {
1807 /* Adjust ring index. */
1808 req->ring_index++;
1809 if (req->ring_index == req->length) {
1810 req->ring_index = 0;
1811 req->ring_ptr = req->ring;
1812 } else
1813 req->ring_ptr++;
1814
1815 /* Set chip new ring index. */
1816 if (ha->mqenable) {
1817 WRT_REG_DWORD(&reg->isp25mq.req_q_in, req->ring_index);
1818 RD_REG_DWORD(&ioreg->hccr);
1819 } else if (IS_QLA82XX(ha)) {
1820 qla82xx_start_iocbs(sp);
1821 } else if (IS_FWI2_CAPABLE(ha)) {
1822 WRT_REG_DWORD(&reg->isp24.req_q_in, req->ring_index);
1823 RD_REG_DWORD_RELAXED(&reg->isp24.req_q_in);
1824 } else {
1825 WRT_REG_WORD(ISP_REQ_Q_IN(ha, &reg->isp),
1826 req->ring_index);
1827 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, &reg->isp));
1828 }
1829 }
1830 }
1831
1832 static void
1833 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1834 {
1835 struct srb_ctx *ctx = sp->ctx;
1836 struct srb_iocb *lio = ctx->u.iocb_cmd;
1837
1838 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1839 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
1840 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
1841 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
1842 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
1843 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
1844 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1845 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1846 logio->port_id[1] = sp->fcport->d_id.b.area;
1847 logio->port_id[2] = sp->fcport->d_id.b.domain;
1848 logio->vp_index = sp->fcport->vp_idx;
1849 }
1850
1851 static void
1852 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
1853 {
1854 struct qla_hw_data *ha = sp->fcport->vha->hw;
1855 struct srb_ctx *ctx = sp->ctx;
1856 struct srb_iocb *lio = ctx->u.iocb_cmd;
1857 uint16_t opts;
1858
1859 mbx->entry_type = MBX_IOCB_TYPE;
1860 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1861 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
1862 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0;
1863 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0;
1864 if (HAS_EXTENDED_IDS(ha)) {
1865 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1866 mbx->mb10 = cpu_to_le16(opts);
1867 } else {
1868 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts);
1869 }
1870 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1871 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1872 sp->fcport->d_id.b.al_pa);
1873 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx);
1874 }
1875
1876 static void
1877 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1878 {
1879 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1880 logio->control_flags =
1881 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
1882 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1883 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1884 logio->port_id[1] = sp->fcport->d_id.b.area;
1885 logio->port_id[2] = sp->fcport->d_id.b.domain;
1886 logio->vp_index = sp->fcport->vp_idx;
1887 }
1888
1889 static void
1890 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx)
1891 {
1892 struct qla_hw_data *ha = sp->fcport->vha->hw;
1893
1894 mbx->entry_type = MBX_IOCB_TYPE;
1895 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1896 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
1897 mbx->mb1 = HAS_EXTENDED_IDS(ha) ?
1898 cpu_to_le16(sp->fcport->loop_id):
1899 cpu_to_le16(sp->fcport->loop_id << 8);
1900 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1901 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1902 sp->fcport->d_id.b.al_pa);
1903 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx);
1904 /* Implicit: mbx->mbx10 = 0. */
1905 }
1906
1907 static void
1908 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1909 {
1910 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1911 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC);
1912 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1913 logio->vp_index = sp->fcport->vp_idx;
1914 }
1915
1916 static void
1917 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx)
1918 {
1919 struct qla_hw_data *ha = sp->fcport->vha->hw;
1920
1921 mbx->entry_type = MBX_IOCB_TYPE;
1922 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1923 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE);
1924 if (HAS_EXTENDED_IDS(ha)) {
1925 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1926 mbx->mb10 = cpu_to_le16(BIT_0);
1927 } else {
1928 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0);
1929 }
1930 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma));
1931 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma));
1932 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma)));
1933 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma)));
1934 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx);
1935 }
1936
1937 static void
1938 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk)
1939 {
1940 uint32_t flags;
1941 unsigned int lun;
1942 struct fc_port *fcport = sp->fcport;
1943 scsi_qla_host_t *vha = fcport->vha;
1944 struct qla_hw_data *ha = vha->hw;
1945 struct srb_ctx *ctx = sp->ctx;
1946 struct srb_iocb *iocb = ctx->u.iocb_cmd;
1947 struct req_que *req = vha->req;
1948
1949 flags = iocb->u.tmf.flags;
1950 lun = iocb->u.tmf.lun;
1951
1952 tsk->entry_type = TSK_MGMT_IOCB_TYPE;
1953 tsk->entry_count = 1;
1954 tsk->handle = MAKE_HANDLE(req->id, tsk->handle);
1955 tsk->nport_handle = cpu_to_le16(fcport->loop_id);
1956 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
1957 tsk->control_flags = cpu_to_le32(flags);
1958 tsk->port_id[0] = fcport->d_id.b.al_pa;
1959 tsk->port_id[1] = fcport->d_id.b.area;
1960 tsk->port_id[2] = fcport->d_id.b.domain;
1961 tsk->vp_index = fcport->vp_idx;
1962
1963 if (flags == TCF_LUN_RESET) {
1964 int_to_scsilun(lun, &tsk->lun);
1965 host_to_fcp_swap((uint8_t *)&tsk->lun,
1966 sizeof(tsk->lun));
1967 }
1968 }
1969
1970 static void
1971 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
1972 {
1973 struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job;
1974
1975 els_iocb->entry_type = ELS_IOCB_TYPE;
1976 els_iocb->entry_count = 1;
1977 els_iocb->sys_define = 0;
1978 els_iocb->entry_status = 0;
1979 els_iocb->handle = sp->handle;
1980 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1981 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
1982 els_iocb->vp_index = sp->fcport->vp_idx;
1983 els_iocb->sof_type = EST_SOFI3;
1984 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt);
1985
1986 els_iocb->opcode =
1987 (((struct srb_ctx *)sp->ctx)->type == SRB_ELS_CMD_RPT) ?
1988 bsg_job->request->rqst_data.r_els.els_code :
1989 bsg_job->request->rqst_data.h_els.command_code;
1990 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
1991 els_iocb->port_id[1] = sp->fcport->d_id.b.area;
1992 els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
1993 els_iocb->control_flags = 0;
1994 els_iocb->rx_byte_count =
1995 cpu_to_le32(bsg_job->reply_payload.payload_len);
1996 els_iocb->tx_byte_count =
1997 cpu_to_le32(bsg_job->request_payload.payload_len);
1998
1999 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address
2000 (bsg_job->request_payload.sg_list)));
2001 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address
2002 (bsg_job->request_payload.sg_list)));
2003 els_iocb->tx_len = cpu_to_le32(sg_dma_len
2004 (bsg_job->request_payload.sg_list));
2005
2006 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address
2007 (bsg_job->reply_payload.sg_list)));
2008 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address
2009 (bsg_job->reply_payload.sg_list)));
2010 els_iocb->rx_len = cpu_to_le32(sg_dma_len
2011 (bsg_job->reply_payload.sg_list));
2012 }
2013
2014 static void
2015 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb)
2016 {
2017 uint16_t avail_dsds;
2018 uint32_t *cur_dsd;
2019 struct scatterlist *sg;
2020 int index;
2021 uint16_t tot_dsds;
2022 scsi_qla_host_t *vha = sp->fcport->vha;
2023 struct qla_hw_data *ha = vha->hw;
2024 struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job;
2025 int loop_iterartion = 0;
2026 int cont_iocb_prsnt = 0;
2027 int entry_count = 1;
2028
2029 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t));
2030 ct_iocb->entry_type = CT_IOCB_TYPE;
2031 ct_iocb->entry_status = 0;
2032 ct_iocb->handle1 = sp->handle;
2033 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id);
2034 ct_iocb->status = __constant_cpu_to_le16(0);
2035 ct_iocb->control_flags = __constant_cpu_to_le16(0);
2036 ct_iocb->timeout = 0;
2037 ct_iocb->cmd_dsd_count =
2038 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
2039 ct_iocb->total_dsd_count =
2040 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1);
2041 ct_iocb->req_bytecount =
2042 cpu_to_le32(bsg_job->request_payload.payload_len);
2043 ct_iocb->rsp_bytecount =
2044 cpu_to_le32(bsg_job->reply_payload.payload_len);
2045
2046 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address
2047 (bsg_job->request_payload.sg_list)));
2048 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address
2049 (bsg_job->request_payload.sg_list)));
2050 ct_iocb->dseg_req_length = ct_iocb->req_bytecount;
2051
2052 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address
2053 (bsg_job->reply_payload.sg_list)));
2054 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address
2055 (bsg_job->reply_payload.sg_list)));
2056 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount;
2057
2058 avail_dsds = 1;
2059 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address;
2060 index = 0;
2061 tot_dsds = bsg_job->reply_payload.sg_cnt;
2062
2063 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
2064 dma_addr_t sle_dma;
2065 cont_a64_entry_t *cont_pkt;
2066
2067 /* Allocate additional continuation packets? */
2068 if (avail_dsds == 0) {
2069 /*
2070 * Five DSDs are available in the Cont.
2071 * Type 1 IOCB.
2072 */
2073 cont_pkt = qla2x00_prep_cont_type1_iocb(vha);
2074 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2075 avail_dsds = 5;
2076 cont_iocb_prsnt = 1;
2077 entry_count++;
2078 }
2079
2080 sle_dma = sg_dma_address(sg);
2081 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2082 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2083 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2084 loop_iterartion++;
2085 avail_dsds--;
2086 }
2087 ct_iocb->entry_count = entry_count;
2088 }
2089
2090 static void
2091 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
2092 {
2093 uint16_t avail_dsds;
2094 uint32_t *cur_dsd;
2095 struct scatterlist *sg;
2096 int index;
2097 uint16_t tot_dsds;
2098 scsi_qla_host_t *vha = sp->fcport->vha;
2099 struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job;
2100 int loop_iterartion = 0;
2101 int cont_iocb_prsnt = 0;
2102 int entry_count = 1;
2103
2104 ct_iocb->entry_type = CT_IOCB_TYPE;
2105 ct_iocb->entry_status = 0;
2106 ct_iocb->sys_define = 0;
2107 ct_iocb->handle = sp->handle;
2108
2109 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
2110 ct_iocb->vp_index = sp->fcport->vp_idx;
2111 ct_iocb->comp_status = __constant_cpu_to_le16(0);
2112
2113 ct_iocb->cmd_dsd_count =
2114 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
2115 ct_iocb->timeout = 0;
2116 ct_iocb->rsp_dsd_count =
2117 __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt);
2118 ct_iocb->rsp_byte_count =
2119 cpu_to_le32(bsg_job->reply_payload.payload_len);
2120 ct_iocb->cmd_byte_count =
2121 cpu_to_le32(bsg_job->request_payload.payload_len);
2122 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address
2123 (bsg_job->request_payload.sg_list)));
2124 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address
2125 (bsg_job->request_payload.sg_list)));
2126 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len
2127 (bsg_job->request_payload.sg_list));
2128
2129 avail_dsds = 1;
2130 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address;
2131 index = 0;
2132 tot_dsds = bsg_job->reply_payload.sg_cnt;
2133
2134 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
2135 dma_addr_t sle_dma;
2136 cont_a64_entry_t *cont_pkt;
2137
2138 /* Allocate additional continuation packets? */
2139 if (avail_dsds == 0) {
2140 /*
2141 * Five DSDs are available in the Cont.
2142 * Type 1 IOCB.
2143 */
2144 cont_pkt = qla2x00_prep_cont_type1_iocb(vha);
2145 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
2146 avail_dsds = 5;
2147 cont_iocb_prsnt = 1;
2148 entry_count++;
2149 }
2150
2151 sle_dma = sg_dma_address(sg);
2152 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
2153 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
2154 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
2155 loop_iterartion++;
2156 avail_dsds--;
2157 }
2158 ct_iocb->entry_count = entry_count;
2159 }
2160
2161 int
2162 qla2x00_start_sp(srb_t *sp)
2163 {
2164 int rval;
2165 struct qla_hw_data *ha = sp->fcport->vha->hw;
2166 void *pkt;
2167 struct srb_ctx *ctx = sp->ctx;
2168 unsigned long flags;
2169
2170 rval = QLA_FUNCTION_FAILED;
2171 spin_lock_irqsave(&ha->hardware_lock, flags);
2172 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp);
2173 if (!pkt) {
2174 ql_log(ql_log_warn, sp->fcport->vha, 0x700c,
2175 "qla2x00_alloc_iocbs failed.\n");
2176 goto done;
2177 }
2178
2179 rval = QLA_SUCCESS;
2180 switch (ctx->type) {
2181 case SRB_LOGIN_CMD:
2182 IS_FWI2_CAPABLE(ha) ?
2183 qla24xx_login_iocb(sp, pkt) :
2184 qla2x00_login_iocb(sp, pkt);
2185 break;
2186 case SRB_LOGOUT_CMD:
2187 IS_FWI2_CAPABLE(ha) ?
2188 qla24xx_logout_iocb(sp, pkt) :
2189 qla2x00_logout_iocb(sp, pkt);
2190 break;
2191 case SRB_ELS_CMD_RPT:
2192 case SRB_ELS_CMD_HST:
2193 qla24xx_els_iocb(sp, pkt);
2194 break;
2195 case SRB_CT_CMD:
2196 IS_FWI2_CAPABLE(ha) ?
2197 qla24xx_ct_iocb(sp, pkt) :
2198 qla2x00_ct_iocb(sp, pkt);
2199 break;
2200 case SRB_ADISC_CMD:
2201 IS_FWI2_CAPABLE(ha) ?
2202 qla24xx_adisc_iocb(sp, pkt) :
2203 qla2x00_adisc_iocb(sp, pkt);
2204 break;
2205 case SRB_TM_CMD:
2206 qla24xx_tm_iocb(sp, pkt);
2207 break;
2208 default:
2209 break;
2210 }
2211
2212 wmb();
2213 qla2x00_start_iocbs(sp);
2214 done:
2215 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2216 return rval;
2217 }
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