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tty/serial: atmel_serial: whitespace and braces modifications
[zen-stable.git] / drivers / scsi / qla2xxx / qla_iocb.c
blob49d6906af886e06649494ba2eab37b8bddeac3aa
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(struct scsi_cmnd *cmd, struct fw_dif_context *pkt,
713 unsigned int protcnt)
714 {
715 struct sd_dif_tuple *spt;
716 scsi_qla_host_t *vha = shost_priv(cmd->device->host);
717 unsigned char op = scsi_get_prot_op(cmd);
718
719 switch (scsi_get_prot_type(cmd)) {
720 /* For TYPE 0 protection: no checking */
721 case SCSI_PROT_DIF_TYPE0:
722 pkt->ref_tag_mask[0] = 0x00;
723 pkt->ref_tag_mask[1] = 0x00;
724 pkt->ref_tag_mask[2] = 0x00;
725 pkt->ref_tag_mask[3] = 0x00;
726 break;
727
728 /*
729 * For TYPE 2 protection: 16 bit GUARD + 32 bit REF tag has to
730 * match LBA in CDB + N
731 */
732 case SCSI_PROT_DIF_TYPE2:
733 if (!ql2xenablehba_err_chk)
734 break;
735
736 if (scsi_prot_sg_count(cmd)) {
737 spt = page_address(sg_page(scsi_prot_sglist(cmd))) +
738 scsi_prot_sglist(cmd)[0].offset;
739 pkt->app_tag = swab32(spt->app_tag);
740 pkt->app_tag_mask[0] = 0xff;
741 pkt->app_tag_mask[1] = 0xff;
742 }
743
744 pkt->ref_tag = cpu_to_le32((uint32_t)
745 (0xffffffff & scsi_get_lba(cmd)));
746
747 /* enable ALL bytes of the ref tag */
748 pkt->ref_tag_mask[0] = 0xff;
749 pkt->ref_tag_mask[1] = 0xff;
750 pkt->ref_tag_mask[2] = 0xff;
751 pkt->ref_tag_mask[3] = 0xff;
752 break;
753
754 /* For Type 3 protection: 16 bit GUARD only */
755 case SCSI_PROT_DIF_TYPE3:
756 pkt->ref_tag_mask[0] = pkt->ref_tag_mask[1] =
757 pkt->ref_tag_mask[2] = pkt->ref_tag_mask[3] =
758 0x00;
759 break;
760
761 /*
762 * For TYpe 1 protection: 16 bit GUARD tag, 32 bit REF tag, and
763 * 16 bit app tag.
764 */
765 case SCSI_PROT_DIF_TYPE1:
766 if (!ql2xenablehba_err_chk)
767 break;
768
769 if (protcnt && (op == SCSI_PROT_WRITE_STRIP ||
770 op == SCSI_PROT_WRITE_PASS)) {
771 spt = page_address(sg_page(scsi_prot_sglist(cmd))) +
772 scsi_prot_sglist(cmd)[0].offset;
773 ql_dbg(ql_dbg_io, vha, 0x3008,
774 "LBA from user %p, lba = 0x%x for cmd=%p.\n",
775 spt, (int)spt->ref_tag, cmd);
776 pkt->ref_tag = swab32(spt->ref_tag);
777 pkt->app_tag_mask[0] = 0x0;
778 pkt->app_tag_mask[1] = 0x0;
779 } else {
780 pkt->ref_tag = cpu_to_le32((uint32_t)
781 (0xffffffff & scsi_get_lba(cmd)));
782 pkt->app_tag = __constant_cpu_to_le16(0);
783 pkt->app_tag_mask[0] = 0x0;
784 pkt->app_tag_mask[1] = 0x0;
785 }
786 /* enable ALL bytes of the ref tag */
787 pkt->ref_tag_mask[0] = 0xff;
788 pkt->ref_tag_mask[1] = 0xff;
789 pkt->ref_tag_mask[2] = 0xff;
790 pkt->ref_tag_mask[3] = 0xff;
791 break;
792 }
793
794 ql_dbg(ql_dbg_io, vha, 0x3009,
795 "Setting protection Tags: (BIG) ref tag = 0x%x, app tag = 0x%x, "
796 "prot SG count %d, cmd lba 0x%x, prot_type=%u cmd=%p.\n",
797 pkt->ref_tag, pkt->app_tag, protcnt, (int)scsi_get_lba(cmd),
798 scsi_get_prot_type(cmd), cmd);
799 }
800
801
802 static int
803 qla24xx_walk_and_build_sglist(struct qla_hw_data *ha, srb_t *sp, uint32_t *dsd,
804 uint16_t tot_dsds)
805 {
806 void *next_dsd;
807 uint8_t avail_dsds = 0;
808 uint32_t dsd_list_len;
809 struct dsd_dma *dsd_ptr;
810 struct scatterlist *sg;
811 uint32_t *cur_dsd = dsd;
812 int i;
813 uint16_t used_dsds = tot_dsds;
814 scsi_qla_host_t *vha = shost_priv(sp->cmd->device->host);
815
816 uint8_t *cp;
817
818 scsi_for_each_sg(sp->cmd, sg, tot_dsds, i) {
819 dma_addr_t sle_dma;
820
821 /* Allocate additional continuation packets? */
822 if (avail_dsds == 0) {
823 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
824 QLA_DSDS_PER_IOCB : used_dsds;
825 dsd_list_len = (avail_dsds + 1) * 12;
826 used_dsds -= avail_dsds;
827
828 /* allocate tracking DS */
829 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
830 if (!dsd_ptr)
831 return 1;
832
833 /* allocate new list */
834 dsd_ptr->dsd_addr = next_dsd =
835 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
836 &dsd_ptr->dsd_list_dma);
837
838 if (!next_dsd) {
839 /*
840 * Need to cleanup only this dsd_ptr, rest
841 * will be done by sp_free_dma()
842 */
843 kfree(dsd_ptr);
844 return 1;
845 }
846
847 list_add_tail(&dsd_ptr->list,
848 &((struct crc_context *)sp->ctx)->dsd_list);
849
850 sp->flags |= SRB_CRC_CTX_DSD_VALID;
851
852 /* add new list to cmd iocb or last list */
853 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
854 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
855 *cur_dsd++ = dsd_list_len;
856 cur_dsd = (uint32_t *)next_dsd;
857 }
858 sle_dma = sg_dma_address(sg);
859 ql_dbg(ql_dbg_io, vha, 0x300a,
860 "sg entry %d - addr=0x%x 0x%x, " "len=%d for cmd=%p.\n",
861 cur_dsd, i, LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg),
862 sp->cmd);
863 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
864 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
865 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
866 avail_dsds--;
867
868 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) {
869 cp = page_address(sg_page(sg)) + sg->offset;
870 ql_dbg(ql_dbg_io, vha, 0x300b,
871 "User data buffer=%p for cmd=%p.\n", cp, sp->cmd);
872 }
873 }
874 /* Null termination */
875 *cur_dsd++ = 0;
876 *cur_dsd++ = 0;
877 *cur_dsd++ = 0;
878 return 0;
879 }
880
881 static int
882 qla24xx_walk_and_build_prot_sglist(struct qla_hw_data *ha, srb_t *sp,
883 uint32_t *dsd,
884 uint16_t tot_dsds)
885 {
886 void *next_dsd;
887 uint8_t avail_dsds = 0;
888 uint32_t dsd_list_len;
889 struct dsd_dma *dsd_ptr;
890 struct scatterlist *sg;
891 int i;
892 struct scsi_cmnd *cmd;
893 uint32_t *cur_dsd = dsd;
894 uint16_t used_dsds = tot_dsds;
895 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
896 uint8_t *cp;
897
898
899 cmd = sp->cmd;
900 scsi_for_each_prot_sg(cmd, sg, tot_dsds, i) {
901 dma_addr_t sle_dma;
902
903 /* Allocate additional continuation packets? */
904 if (avail_dsds == 0) {
905 avail_dsds = (used_dsds > QLA_DSDS_PER_IOCB) ?
906 QLA_DSDS_PER_IOCB : used_dsds;
907 dsd_list_len = (avail_dsds + 1) * 12;
908 used_dsds -= avail_dsds;
909
910 /* allocate tracking DS */
911 dsd_ptr = kzalloc(sizeof(struct dsd_dma), GFP_ATOMIC);
912 if (!dsd_ptr)
913 return 1;
914
915 /* allocate new list */
916 dsd_ptr->dsd_addr = next_dsd =
917 dma_pool_alloc(ha->dl_dma_pool, GFP_ATOMIC,
918 &dsd_ptr->dsd_list_dma);
919
920 if (!next_dsd) {
921 /*
922 * Need to cleanup only this dsd_ptr, rest
923 * will be done by sp_free_dma()
924 */
925 kfree(dsd_ptr);
926 return 1;
927 }
928
929 list_add_tail(&dsd_ptr->list,
930 &((struct crc_context *)sp->ctx)->dsd_list);
931
932 sp->flags |= SRB_CRC_CTX_DSD_VALID;
933
934 /* add new list to cmd iocb or last list */
935 *cur_dsd++ = cpu_to_le32(LSD(dsd_ptr->dsd_list_dma));
936 *cur_dsd++ = cpu_to_le32(MSD(dsd_ptr->dsd_list_dma));
937 *cur_dsd++ = dsd_list_len;
938 cur_dsd = (uint32_t *)next_dsd;
939 }
940 sle_dma = sg_dma_address(sg);
941 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) {
942 ql_dbg(ql_dbg_io, vha, 0x3027,
943 "%s(): %p, sg_entry %d - "
944 "addr=0x%x0x%x, len=%d.\n",
945 __func__, cur_dsd, i,
946 LSD(sle_dma), MSD(sle_dma), sg_dma_len(sg));
947 }
948 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
949 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
950 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
951
952 if (scsi_get_prot_op(sp->cmd) == SCSI_PROT_WRITE_PASS) {
953 cp = page_address(sg_page(sg)) + sg->offset;
954 ql_dbg(ql_dbg_io, vha, 0x3028,
955 "%s(): Protection Data buffer = %p.\n", __func__,
956 cp);
957 }
958 avail_dsds--;
959 }
960 /* Null termination */
961 *cur_dsd++ = 0;
962 *cur_dsd++ = 0;
963 *cur_dsd++ = 0;
964 return 0;
965 }
966
967 /**
968 * qla24xx_build_scsi_crc_2_iocbs() - Build IOCB command utilizing Command
969 * Type 6 IOCB types.
970 *
971 * @sp: SRB command to process
972 * @cmd_pkt: Command type 3 IOCB
973 * @tot_dsds: Total number of segments to transfer
974 */
975 static inline int
976 qla24xx_build_scsi_crc_2_iocbs(srb_t *sp, struct cmd_type_crc_2 *cmd_pkt,
977 uint16_t tot_dsds, uint16_t tot_prot_dsds, uint16_t fw_prot_opts)
978 {
979 uint32_t *cur_dsd, *fcp_dl;
980 scsi_qla_host_t *vha;
981 struct scsi_cmnd *cmd;
982 struct scatterlist *cur_seg;
983 int sgc;
984 uint32_t total_bytes;
985 uint32_t data_bytes;
986 uint32_t dif_bytes;
987 uint8_t bundling = 1;
988 uint16_t blk_size;
989 uint8_t *clr_ptr;
990 struct crc_context *crc_ctx_pkt = NULL;
991 struct qla_hw_data *ha;
992 uint8_t additional_fcpcdb_len;
993 uint16_t fcp_cmnd_len;
994 struct fcp_cmnd *fcp_cmnd;
995 dma_addr_t crc_ctx_dma;
996 char tag[2];
997
998 cmd = sp->cmd;
999
1000 sgc = 0;
1001 /* Update entry type to indicate Command Type CRC_2 IOCB */
1002 *((uint32_t *)(&cmd_pkt->entry_type)) =
1003 __constant_cpu_to_le32(COMMAND_TYPE_CRC_2);
1004
1005 vha = sp->fcport->vha;
1006 ha = vha->hw;
1007
1008 /* No data transfer */
1009 data_bytes = scsi_bufflen(cmd);
1010 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1011 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
1012 return QLA_SUCCESS;
1013 }
1014
1015 cmd_pkt->vp_index = sp->fcport->vp_idx;
1016
1017 /* Set transfer direction */
1018 if (cmd->sc_data_direction == DMA_TO_DEVICE) {
1019 cmd_pkt->control_flags =
1020 __constant_cpu_to_le16(CF_WRITE_DATA);
1021 } else if (cmd->sc_data_direction == DMA_FROM_DEVICE) {
1022 cmd_pkt->control_flags =
1023 __constant_cpu_to_le16(CF_READ_DATA);
1024 }
1025
1026 tot_prot_dsds = scsi_prot_sg_count(cmd);
1027 if (!tot_prot_dsds)
1028 bundling = 0;
1029
1030 /* Allocate CRC context from global pool */
1031 crc_ctx_pkt = sp->ctx = dma_pool_alloc(ha->dl_dma_pool,
1032 GFP_ATOMIC, &crc_ctx_dma);
1033
1034 if (!crc_ctx_pkt)
1035 goto crc_queuing_error;
1036
1037 /* Zero out CTX area. */
1038 clr_ptr = (uint8_t *)crc_ctx_pkt;
1039 memset(clr_ptr, 0, sizeof(*crc_ctx_pkt));
1040
1041 crc_ctx_pkt->crc_ctx_dma = crc_ctx_dma;
1042
1043 sp->flags |= SRB_CRC_CTX_DMA_VALID;
1044
1045 /* Set handle */
1046 crc_ctx_pkt->handle = cmd_pkt->handle;
1047
1048 INIT_LIST_HEAD(&crc_ctx_pkt->dsd_list);
1049
1050 qla24xx_set_t10dif_tags(cmd, (struct fw_dif_context *)
1051 &crc_ctx_pkt->ref_tag, tot_prot_dsds);
1052
1053 cmd_pkt->crc_context_address[0] = cpu_to_le32(LSD(crc_ctx_dma));
1054 cmd_pkt->crc_context_address[1] = cpu_to_le32(MSD(crc_ctx_dma));
1055 cmd_pkt->crc_context_len = CRC_CONTEXT_LEN_FW;
1056
1057 /* Determine SCSI command length -- align to 4 byte boundary */
1058 if (cmd->cmd_len > 16) {
1059 additional_fcpcdb_len = cmd->cmd_len - 16;
1060 if ((cmd->cmd_len % 4) != 0) {
1061 /* SCSI cmd > 16 bytes must be multiple of 4 */
1062 goto crc_queuing_error;
1063 }
1064 fcp_cmnd_len = 12 + cmd->cmd_len + 4;
1065 } else {
1066 additional_fcpcdb_len = 0;
1067 fcp_cmnd_len = 12 + 16 + 4;
1068 }
1069
1070 fcp_cmnd = &crc_ctx_pkt->fcp_cmnd;
1071
1072 fcp_cmnd->additional_cdb_len = additional_fcpcdb_len;
1073 if (cmd->sc_data_direction == DMA_TO_DEVICE)
1074 fcp_cmnd->additional_cdb_len |= 1;
1075 else if (cmd->sc_data_direction == DMA_FROM_DEVICE)
1076 fcp_cmnd->additional_cdb_len |= 2;
1077
1078 int_to_scsilun(sp->cmd->device->lun, &fcp_cmnd->lun);
1079 host_to_fcp_swap((uint8_t *)&fcp_cmnd->lun, sizeof(fcp_cmnd->lun));
1080 memcpy(fcp_cmnd->cdb, cmd->cmnd, cmd->cmd_len);
1081 cmd_pkt->fcp_cmnd_dseg_len = cpu_to_le16(fcp_cmnd_len);
1082 cmd_pkt->fcp_cmnd_dseg_address[0] = cpu_to_le32(
1083 LSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1084 cmd_pkt->fcp_cmnd_dseg_address[1] = cpu_to_le32(
1085 MSD(crc_ctx_dma + CRC_CONTEXT_FCPCMND_OFF));
1086 fcp_cmnd->task_management = 0;
1087
1088 /*
1089 * Update tagged queuing modifier if using command tag queuing
1090 */
1091 if (scsi_populate_tag_msg(cmd, tag)) {
1092 switch (tag[0]) {
1093 case HEAD_OF_QUEUE_TAG:
1094 fcp_cmnd->task_attribute = TSK_HEAD_OF_QUEUE;
1095 break;
1096 case ORDERED_QUEUE_TAG:
1097 fcp_cmnd->task_attribute = TSK_ORDERED;
1098 break;
1099 default:
1100 fcp_cmnd->task_attribute = 0;
1101 break;
1102 }
1103 } else {
1104 fcp_cmnd->task_attribute = 0;
1105 }
1106
1107 cmd_pkt->fcp_rsp_dseg_len = 0; /* Let response come in status iocb */
1108
1109 /* Compute dif len and adjust data len to incude protection */
1110 total_bytes = data_bytes;
1111 dif_bytes = 0;
1112 blk_size = cmd->device->sector_size;
1113 if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
1114 dif_bytes = (data_bytes / blk_size) * 8;
1115 total_bytes += dif_bytes;
1116 }
1117
1118 if (!ql2xenablehba_err_chk)
1119 fw_prot_opts |= 0x10; /* Disable Guard tag checking */
1120
1121 if (!bundling) {
1122 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.nobundling.data_address;
1123 } else {
1124 /*
1125 * Configure Bundling if we need to fetch interlaving
1126 * protection PCI accesses
1127 */
1128 fw_prot_opts |= PO_ENABLE_DIF_BUNDLING;
1129 crc_ctx_pkt->u.bundling.dif_byte_count = cpu_to_le32(dif_bytes);
1130 crc_ctx_pkt->u.bundling.dseg_count = cpu_to_le16(tot_dsds -
1131 tot_prot_dsds);
1132 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.data_address;
1133 }
1134
1135 /* Finish the common fields of CRC pkt */
1136 crc_ctx_pkt->blk_size = cpu_to_le16(blk_size);
1137 crc_ctx_pkt->prot_opts = cpu_to_le16(fw_prot_opts);
1138 crc_ctx_pkt->byte_count = cpu_to_le32(data_bytes);
1139 crc_ctx_pkt->guard_seed = __constant_cpu_to_le16(0);
1140 /* Fibre channel byte count */
1141 cmd_pkt->byte_count = cpu_to_le32(total_bytes);
1142 fcp_dl = (uint32_t *)(crc_ctx_pkt->fcp_cmnd.cdb + 16 +
1143 additional_fcpcdb_len);
1144 *fcp_dl = htonl(total_bytes);
1145
1146 if (!data_bytes || cmd->sc_data_direction == DMA_NONE) {
1147 cmd_pkt->byte_count = __constant_cpu_to_le32(0);
1148 return QLA_SUCCESS;
1149 }
1150 /* Walks data segments */
1151
1152 cmd_pkt->control_flags |=
1153 __constant_cpu_to_le16(CF_DATA_SEG_DESCR_ENABLE);
1154 if (qla24xx_walk_and_build_sglist(ha, sp, cur_dsd,
1155 (tot_dsds - tot_prot_dsds)))
1156 goto crc_queuing_error;
1157
1158 if (bundling && tot_prot_dsds) {
1159 /* Walks dif segments */
1160 cur_seg = scsi_prot_sglist(cmd);
1161 cmd_pkt->control_flags |=
1162 __constant_cpu_to_le16(CF_DIF_SEG_DESCR_ENABLE);
1163 cur_dsd = (uint32_t *) &crc_ctx_pkt->u.bundling.dif_address;
1164 if (qla24xx_walk_and_build_prot_sglist(ha, sp, cur_dsd,
1165 tot_prot_dsds))
1166 goto crc_queuing_error;
1167 }
1168 return QLA_SUCCESS;
1169
1170 crc_queuing_error:
1171 /* Cleanup will be performed by the caller */
1172
1173 return QLA_FUNCTION_FAILED;
1174 }
1175
1176 /**
1177 * qla24xx_start_scsi() - Send a SCSI command to the ISP
1178 * @sp: command to send to the ISP
1179 *
1180 * Returns non-zero if a failure occurred, else zero.
1181 */
1182 int
1183 qla24xx_start_scsi(srb_t *sp)
1184 {
1185 int ret, nseg;
1186 unsigned long flags;
1187 uint32_t *clr_ptr;
1188 uint32_t index;
1189 uint32_t handle;
1190 struct cmd_type_7 *cmd_pkt;
1191 uint16_t cnt;
1192 uint16_t req_cnt;
1193 uint16_t tot_dsds;
1194 struct req_que *req = NULL;
1195 struct rsp_que *rsp = NULL;
1196 struct scsi_cmnd *cmd = sp->cmd;
1197 struct scsi_qla_host *vha = sp->fcport->vha;
1198 struct qla_hw_data *ha = vha->hw;
1199 char tag[2];
1200
1201 /* Setup device pointers. */
1202 ret = 0;
1203
1204 qla25xx_set_que(sp, &rsp);
1205 req = vha->req;
1206
1207 /* So we know we haven't pci_map'ed anything yet */
1208 tot_dsds = 0;
1209
1210 /* Send marker if required */
1211 if (vha->marker_needed != 0) {
1212 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1213 QLA_SUCCESS)
1214 return QLA_FUNCTION_FAILED;
1215 vha->marker_needed = 0;
1216 }
1217
1218 /* Acquire ring specific lock */
1219 spin_lock_irqsave(&ha->hardware_lock, flags);
1220
1221 /* Check for room in outstanding command list. */
1222 handle = req->current_outstanding_cmd;
1223 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
1224 handle++;
1225 if (handle == MAX_OUTSTANDING_COMMANDS)
1226 handle = 1;
1227 if (!req->outstanding_cmds[handle])
1228 break;
1229 }
1230 if (index == MAX_OUTSTANDING_COMMANDS) {
1231 goto queuing_error;
1232 }
1233
1234 /* Map the sg table so we have an accurate count of sg entries needed */
1235 if (scsi_sg_count(cmd)) {
1236 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1237 scsi_sg_count(cmd), cmd->sc_data_direction);
1238 if (unlikely(!nseg))
1239 goto queuing_error;
1240 } else
1241 nseg = 0;
1242
1243 tot_dsds = nseg;
1244 req_cnt = qla24xx_calc_iocbs(vha, tot_dsds);
1245 if (req->cnt < (req_cnt + 2)) {
1246 cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
1247
1248 if (req->ring_index < cnt)
1249 req->cnt = cnt - req->ring_index;
1250 else
1251 req->cnt = req->length -
1252 (req->ring_index - cnt);
1253 }
1254 if (req->cnt < (req_cnt + 2))
1255 goto queuing_error;
1256
1257 /* Build command packet. */
1258 req->current_outstanding_cmd = handle;
1259 req->outstanding_cmds[handle] = sp;
1260 sp->handle = handle;
1261 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1262 req->cnt -= req_cnt;
1263
1264 cmd_pkt = (struct cmd_type_7 *)req->ring_ptr;
1265 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1266
1267 /* Zero out remaining portion of packet. */
1268 /* tagged queuing modifier -- default is TSK_SIMPLE (0). */
1269 clr_ptr = (uint32_t *)cmd_pkt + 2;
1270 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1271 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1272
1273 /* Set NPORT-ID and LUN number*/
1274 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1275 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1276 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1277 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1278 cmd_pkt->vp_index = sp->fcport->vp_idx;
1279
1280 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun);
1281 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1282
1283 /* Update tagged queuing modifier -- default is TSK_SIMPLE (0). */
1284 if (scsi_populate_tag_msg(cmd, tag)) {
1285 switch (tag[0]) {
1286 case HEAD_OF_QUEUE_TAG:
1287 cmd_pkt->task = TSK_HEAD_OF_QUEUE;
1288 break;
1289 case ORDERED_QUEUE_TAG:
1290 cmd_pkt->task = TSK_ORDERED;
1291 break;
1292 }
1293 }
1294
1295 /* Load SCSI command packet. */
1296 memcpy(cmd_pkt->fcp_cdb, cmd->cmnd, cmd->cmd_len);
1297 host_to_fcp_swap(cmd_pkt->fcp_cdb, sizeof(cmd_pkt->fcp_cdb));
1298
1299 cmd_pkt->byte_count = cpu_to_le32((uint32_t)scsi_bufflen(cmd));
1300
1301 /* Build IOCB segments */
1302 qla24xx_build_scsi_iocbs(sp, cmd_pkt, tot_dsds);
1303
1304 /* Set total data segment count. */
1305 cmd_pkt->entry_count = (uint8_t)req_cnt;
1306 /* Specify response queue number where completion should happen */
1307 cmd_pkt->entry_status = (uint8_t) rsp->id;
1308 wmb();
1309 /* Adjust ring index. */
1310 req->ring_index++;
1311 if (req->ring_index == req->length) {
1312 req->ring_index = 0;
1313 req->ring_ptr = req->ring;
1314 } else
1315 req->ring_ptr++;
1316
1317 sp->flags |= SRB_DMA_VALID;
1318
1319 /* Set chip new ring index. */
1320 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1321 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1322
1323 /* Manage unprocessed RIO/ZIO commands in response queue. */
1324 if (vha->flags.process_response_queue &&
1325 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1326 qla24xx_process_response_queue(vha, rsp);
1327
1328 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1329 return QLA_SUCCESS;
1330
1331 queuing_error:
1332 if (tot_dsds)
1333 scsi_dma_unmap(cmd);
1334
1335 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1336
1337 return QLA_FUNCTION_FAILED;
1338 }
1339
1340
1341 /**
1342 * qla24xx_dif_start_scsi() - Send a SCSI command to the ISP
1343 * @sp: command to send to the ISP
1344 *
1345 * Returns non-zero if a failure occurred, else zero.
1346 */
1347 int
1348 qla24xx_dif_start_scsi(srb_t *sp)
1349 {
1350 int nseg;
1351 unsigned long flags;
1352 uint32_t *clr_ptr;
1353 uint32_t index;
1354 uint32_t handle;
1355 uint16_t cnt;
1356 uint16_t req_cnt = 0;
1357 uint16_t tot_dsds;
1358 uint16_t tot_prot_dsds;
1359 uint16_t fw_prot_opts = 0;
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 struct cmd_type_crc_2 *cmd_pkt;
1366 uint32_t status = 0;
1367
1368 #define QDSS_GOT_Q_SPACE BIT_0
1369
1370 /* Only process protection or >16 cdb in this routine */
1371 if (scsi_get_prot_op(cmd) == SCSI_PROT_NORMAL) {
1372 if (cmd->cmd_len <= 16)
1373 return qla24xx_start_scsi(sp);
1374 }
1375
1376 /* Setup device pointers. */
1377
1378 qla25xx_set_que(sp, &rsp);
1379 req = vha->req;
1380
1381 /* So we know we haven't pci_map'ed anything yet */
1382 tot_dsds = 0;
1383
1384 /* Send marker if required */
1385 if (vha->marker_needed != 0) {
1386 if (qla2x00_marker(vha, req, rsp, 0, 0, MK_SYNC_ALL) !=
1387 QLA_SUCCESS)
1388 return QLA_FUNCTION_FAILED;
1389 vha->marker_needed = 0;
1390 }
1391
1392 /* Acquire ring specific lock */
1393 spin_lock_irqsave(&ha->hardware_lock, flags);
1394
1395 /* Check for room in outstanding command list. */
1396 handle = req->current_outstanding_cmd;
1397 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
1398 handle++;
1399 if (handle == MAX_OUTSTANDING_COMMANDS)
1400 handle = 1;
1401 if (!req->outstanding_cmds[handle])
1402 break;
1403 }
1404
1405 if (index == MAX_OUTSTANDING_COMMANDS)
1406 goto queuing_error;
1407
1408 /* Compute number of required data segments */
1409 /* Map the sg table so we have an accurate count of sg entries needed */
1410 if (scsi_sg_count(cmd)) {
1411 nseg = dma_map_sg(&ha->pdev->dev, scsi_sglist(cmd),
1412 scsi_sg_count(cmd), cmd->sc_data_direction);
1413 if (unlikely(!nseg))
1414 goto queuing_error;
1415 else
1416 sp->flags |= SRB_DMA_VALID;
1417 } else
1418 nseg = 0;
1419
1420 /* number of required data segments */
1421 tot_dsds = nseg;
1422
1423 /* Compute number of required protection segments */
1424 if (qla24xx_configure_prot_mode(sp, &fw_prot_opts)) {
1425 nseg = dma_map_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
1426 scsi_prot_sg_count(cmd), cmd->sc_data_direction);
1427 if (unlikely(!nseg))
1428 goto queuing_error;
1429 else
1430 sp->flags |= SRB_CRC_PROT_DMA_VALID;
1431 } else {
1432 nseg = 0;
1433 }
1434
1435 req_cnt = 1;
1436 /* Total Data and protection sg segment(s) */
1437 tot_prot_dsds = nseg;
1438 tot_dsds += nseg;
1439 if (req->cnt < (req_cnt + 2)) {
1440 cnt = RD_REG_DWORD_RELAXED(req->req_q_out);
1441
1442 if (req->ring_index < cnt)
1443 req->cnt = cnt - req->ring_index;
1444 else
1445 req->cnt = req->length -
1446 (req->ring_index - cnt);
1447 }
1448
1449 if (req->cnt < (req_cnt + 2))
1450 goto queuing_error;
1451
1452 status |= QDSS_GOT_Q_SPACE;
1453
1454 /* Build header part of command packet (excluding the OPCODE). */
1455 req->current_outstanding_cmd = handle;
1456 req->outstanding_cmds[handle] = sp;
1457 sp->cmd->host_scribble = (unsigned char *)(unsigned long)handle;
1458 req->cnt -= req_cnt;
1459
1460 /* Fill-in common area */
1461 cmd_pkt = (struct cmd_type_crc_2 *)req->ring_ptr;
1462 cmd_pkt->handle = MAKE_HANDLE(req->id, handle);
1463
1464 clr_ptr = (uint32_t *)cmd_pkt + 2;
1465 memset(clr_ptr, 0, REQUEST_ENTRY_SIZE - 8);
1466
1467 /* Set NPORT-ID and LUN number*/
1468 cmd_pkt->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1469 cmd_pkt->port_id[0] = sp->fcport->d_id.b.al_pa;
1470 cmd_pkt->port_id[1] = sp->fcport->d_id.b.area;
1471 cmd_pkt->port_id[2] = sp->fcport->d_id.b.domain;
1472
1473 int_to_scsilun(sp->cmd->device->lun, &cmd_pkt->lun);
1474 host_to_fcp_swap((uint8_t *)&cmd_pkt->lun, sizeof(cmd_pkt->lun));
1475
1476 /* Total Data and protection segment(s) */
1477 cmd_pkt->dseg_count = cpu_to_le16(tot_dsds);
1478
1479 /* Build IOCB segments and adjust for data protection segments */
1480 if (qla24xx_build_scsi_crc_2_iocbs(sp, (struct cmd_type_crc_2 *)
1481 req->ring_ptr, tot_dsds, tot_prot_dsds, fw_prot_opts) !=
1482 QLA_SUCCESS)
1483 goto queuing_error;
1484
1485 cmd_pkt->entry_count = (uint8_t)req_cnt;
1486 /* Specify response queue number where completion should happen */
1487 cmd_pkt->entry_status = (uint8_t) rsp->id;
1488 cmd_pkt->timeout = __constant_cpu_to_le16(0);
1489 wmb();
1490
1491 /* Adjust ring index. */
1492 req->ring_index++;
1493 if (req->ring_index == req->length) {
1494 req->ring_index = 0;
1495 req->ring_ptr = req->ring;
1496 } else
1497 req->ring_ptr++;
1498
1499 /* Set chip new ring index. */
1500 WRT_REG_DWORD(req->req_q_in, req->ring_index);
1501 RD_REG_DWORD_RELAXED(&ha->iobase->isp24.hccr);
1502
1503 /* Manage unprocessed RIO/ZIO commands in response queue. */
1504 if (vha->flags.process_response_queue &&
1505 rsp->ring_ptr->signature != RESPONSE_PROCESSED)
1506 qla24xx_process_response_queue(vha, rsp);
1507
1508 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1509
1510 return QLA_SUCCESS;
1511
1512 queuing_error:
1513 if (status & QDSS_GOT_Q_SPACE) {
1514 req->outstanding_cmds[handle] = NULL;
1515 req->cnt += req_cnt;
1516 }
1517 /* Cleanup will be performed by the caller (queuecommand) */
1518
1519 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1520 return QLA_FUNCTION_FAILED;
1521 }
1522
1523
1524 static void qla25xx_set_que(srb_t *sp, struct rsp_que **rsp)
1525 {
1526 struct scsi_cmnd *cmd = sp->cmd;
1527 struct qla_hw_data *ha = sp->fcport->vha->hw;
1528 int affinity = cmd->request->cpu;
1529
1530 if (ha->flags.cpu_affinity_enabled && affinity >= 0 &&
1531 affinity < ha->max_rsp_queues - 1)
1532 *rsp = ha->rsp_q_map[affinity + 1];
1533 else
1534 *rsp = ha->rsp_q_map[0];
1535 }
1536
1537 /* Generic Control-SRB manipulation functions. */
1538 void *
1539 qla2x00_alloc_iocbs(scsi_qla_host_t *vha, srb_t *sp)
1540 {
1541 struct qla_hw_data *ha = vha->hw;
1542 struct req_que *req = ha->req_q_map[0];
1543 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
1544 uint32_t index, handle;
1545 request_t *pkt;
1546 uint16_t cnt, req_cnt;
1547
1548 pkt = NULL;
1549 req_cnt = 1;
1550 handle = 0;
1551
1552 if (!sp)
1553 goto skip_cmd_array;
1554
1555 /* Check for room in outstanding command list. */
1556 handle = req->current_outstanding_cmd;
1557 for (index = 1; index < MAX_OUTSTANDING_COMMANDS; index++) {
1558 handle++;
1559 if (handle == MAX_OUTSTANDING_COMMANDS)
1560 handle = 1;
1561 if (!req->outstanding_cmds[handle])
1562 break;
1563 }
1564 if (index == MAX_OUTSTANDING_COMMANDS) {
1565 ql_log(ql_log_warn, vha, 0x700b,
1566 "No room on oustanding cmd array.\n");
1567 goto queuing_error;
1568 }
1569
1570 /* Prep command array. */
1571 req->current_outstanding_cmd = handle;
1572 req->outstanding_cmds[handle] = sp;
1573 sp->handle = handle;
1574
1575 skip_cmd_array:
1576 /* Check for room on request queue. */
1577 if (req->cnt < req_cnt) {
1578 if (ha->mqenable)
1579 cnt = RD_REG_DWORD(&reg->isp25mq.req_q_out);
1580 else if (IS_QLA82XX(ha))
1581 cnt = RD_REG_DWORD(&reg->isp82.req_q_out);
1582 else if (IS_FWI2_CAPABLE(ha))
1583 cnt = RD_REG_DWORD(&reg->isp24.req_q_out);
1584 else
1585 cnt = qla2x00_debounce_register(
1586 ISP_REQ_Q_OUT(ha, &reg->isp));
1587
1588 if (req->ring_index < cnt)
1589 req->cnt = cnt - req->ring_index;
1590 else
1591 req->cnt = req->length -
1592 (req->ring_index - cnt);
1593 }
1594 if (req->cnt < req_cnt)
1595 goto queuing_error;
1596
1597 /* Prep packet */
1598 req->cnt -= req_cnt;
1599 pkt = req->ring_ptr;
1600 memset(pkt, 0, REQUEST_ENTRY_SIZE);
1601 pkt->entry_count = req_cnt;
1602 pkt->handle = handle;
1603
1604 queuing_error:
1605 return pkt;
1606 }
1607
1608 static void
1609 qla2x00_start_iocbs(srb_t *sp)
1610 {
1611 struct qla_hw_data *ha = sp->fcport->vha->hw;
1612 struct req_que *req = ha->req_q_map[0];
1613 device_reg_t __iomem *reg = ISP_QUE_REG(ha, req->id);
1614 struct device_reg_2xxx __iomem *ioreg = &ha->iobase->isp;
1615
1616 if (IS_QLA82XX(ha)) {
1617 qla82xx_start_iocbs(sp);
1618 } else {
1619 /* Adjust ring index. */
1620 req->ring_index++;
1621 if (req->ring_index == req->length) {
1622 req->ring_index = 0;
1623 req->ring_ptr = req->ring;
1624 } else
1625 req->ring_ptr++;
1626
1627 /* Set chip new ring index. */
1628 if (ha->mqenable) {
1629 WRT_REG_DWORD(&reg->isp25mq.req_q_in, req->ring_index);
1630 RD_REG_DWORD(&ioreg->hccr);
1631 } else if (IS_QLA82XX(ha)) {
1632 qla82xx_start_iocbs(sp);
1633 } else if (IS_FWI2_CAPABLE(ha)) {
1634 WRT_REG_DWORD(&reg->isp24.req_q_in, req->ring_index);
1635 RD_REG_DWORD_RELAXED(&reg->isp24.req_q_in);
1636 } else {
1637 WRT_REG_WORD(ISP_REQ_Q_IN(ha, &reg->isp),
1638 req->ring_index);
1639 RD_REG_WORD_RELAXED(ISP_REQ_Q_IN(ha, &reg->isp));
1640 }
1641 }
1642 }
1643
1644 static void
1645 qla24xx_login_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1646 {
1647 struct srb_ctx *ctx = sp->ctx;
1648 struct srb_iocb *lio = ctx->u.iocb_cmd;
1649
1650 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1651 logio->control_flags = cpu_to_le16(LCF_COMMAND_PLOGI);
1652 if (lio->u.logio.flags & SRB_LOGIN_COND_PLOGI)
1653 logio->control_flags |= cpu_to_le16(LCF_COND_PLOGI);
1654 if (lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI)
1655 logio->control_flags |= cpu_to_le16(LCF_SKIP_PRLI);
1656 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1657 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1658 logio->port_id[1] = sp->fcport->d_id.b.area;
1659 logio->port_id[2] = sp->fcport->d_id.b.domain;
1660 logio->vp_index = sp->fcport->vp_idx;
1661 }
1662
1663 static void
1664 qla2x00_login_iocb(srb_t *sp, struct mbx_entry *mbx)
1665 {
1666 struct qla_hw_data *ha = sp->fcport->vha->hw;
1667 struct srb_ctx *ctx = sp->ctx;
1668 struct srb_iocb *lio = ctx->u.iocb_cmd;
1669 uint16_t opts;
1670
1671 mbx->entry_type = MBX_IOCB_TYPE;
1672 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1673 mbx->mb0 = cpu_to_le16(MBC_LOGIN_FABRIC_PORT);
1674 opts = lio->u.logio.flags & SRB_LOGIN_COND_PLOGI ? BIT_0 : 0;
1675 opts |= lio->u.logio.flags & SRB_LOGIN_SKIP_PRLI ? BIT_1 : 0;
1676 if (HAS_EXTENDED_IDS(ha)) {
1677 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1678 mbx->mb10 = cpu_to_le16(opts);
1679 } else {
1680 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | opts);
1681 }
1682 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1683 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1684 sp->fcport->d_id.b.al_pa);
1685 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx);
1686 }
1687
1688 static void
1689 qla24xx_logout_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1690 {
1691 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1692 logio->control_flags =
1693 cpu_to_le16(LCF_COMMAND_LOGO|LCF_IMPL_LOGO);
1694 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1695 logio->port_id[0] = sp->fcport->d_id.b.al_pa;
1696 logio->port_id[1] = sp->fcport->d_id.b.area;
1697 logio->port_id[2] = sp->fcport->d_id.b.domain;
1698 logio->vp_index = sp->fcport->vp_idx;
1699 }
1700
1701 static void
1702 qla2x00_logout_iocb(srb_t *sp, struct mbx_entry *mbx)
1703 {
1704 struct qla_hw_data *ha = sp->fcport->vha->hw;
1705
1706 mbx->entry_type = MBX_IOCB_TYPE;
1707 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1708 mbx->mb0 = cpu_to_le16(MBC_LOGOUT_FABRIC_PORT);
1709 mbx->mb1 = HAS_EXTENDED_IDS(ha) ?
1710 cpu_to_le16(sp->fcport->loop_id):
1711 cpu_to_le16(sp->fcport->loop_id << 8);
1712 mbx->mb2 = cpu_to_le16(sp->fcport->d_id.b.domain);
1713 mbx->mb3 = cpu_to_le16(sp->fcport->d_id.b.area << 8 |
1714 sp->fcport->d_id.b.al_pa);
1715 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx);
1716 /* Implicit: mbx->mbx10 = 0. */
1717 }
1718
1719 static void
1720 qla24xx_adisc_iocb(srb_t *sp, struct logio_entry_24xx *logio)
1721 {
1722 logio->entry_type = LOGINOUT_PORT_IOCB_TYPE;
1723 logio->control_flags = cpu_to_le16(LCF_COMMAND_ADISC);
1724 logio->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1725 logio->vp_index = sp->fcport->vp_idx;
1726 }
1727
1728 static void
1729 qla2x00_adisc_iocb(srb_t *sp, struct mbx_entry *mbx)
1730 {
1731 struct qla_hw_data *ha = sp->fcport->vha->hw;
1732
1733 mbx->entry_type = MBX_IOCB_TYPE;
1734 SET_TARGET_ID(ha, mbx->loop_id, sp->fcport->loop_id);
1735 mbx->mb0 = cpu_to_le16(MBC_GET_PORT_DATABASE);
1736 if (HAS_EXTENDED_IDS(ha)) {
1737 mbx->mb1 = cpu_to_le16(sp->fcport->loop_id);
1738 mbx->mb10 = cpu_to_le16(BIT_0);
1739 } else {
1740 mbx->mb1 = cpu_to_le16((sp->fcport->loop_id << 8) | BIT_0);
1741 }
1742 mbx->mb2 = cpu_to_le16(MSW(ha->async_pd_dma));
1743 mbx->mb3 = cpu_to_le16(LSW(ha->async_pd_dma));
1744 mbx->mb6 = cpu_to_le16(MSW(MSD(ha->async_pd_dma)));
1745 mbx->mb7 = cpu_to_le16(LSW(MSD(ha->async_pd_dma)));
1746 mbx->mb9 = cpu_to_le16(sp->fcport->vp_idx);
1747 }
1748
1749 static void
1750 qla24xx_tm_iocb(srb_t *sp, struct tsk_mgmt_entry *tsk)
1751 {
1752 uint32_t flags;
1753 unsigned int lun;
1754 struct fc_port *fcport = sp->fcport;
1755 scsi_qla_host_t *vha = fcport->vha;
1756 struct qla_hw_data *ha = vha->hw;
1757 struct srb_ctx *ctx = sp->ctx;
1758 struct srb_iocb *iocb = ctx->u.iocb_cmd;
1759 struct req_que *req = vha->req;
1760
1761 flags = iocb->u.tmf.flags;
1762 lun = iocb->u.tmf.lun;
1763
1764 tsk->entry_type = TSK_MGMT_IOCB_TYPE;
1765 tsk->entry_count = 1;
1766 tsk->handle = MAKE_HANDLE(req->id, tsk->handle);
1767 tsk->nport_handle = cpu_to_le16(fcport->loop_id);
1768 tsk->timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
1769 tsk->control_flags = cpu_to_le32(flags);
1770 tsk->port_id[0] = fcport->d_id.b.al_pa;
1771 tsk->port_id[1] = fcport->d_id.b.area;
1772 tsk->port_id[2] = fcport->d_id.b.domain;
1773 tsk->vp_index = fcport->vp_idx;
1774
1775 if (flags == TCF_LUN_RESET) {
1776 int_to_scsilun(lun, &tsk->lun);
1777 host_to_fcp_swap((uint8_t *)&tsk->lun,
1778 sizeof(tsk->lun));
1779 }
1780 }
1781
1782 static void
1783 qla24xx_els_iocb(srb_t *sp, struct els_entry_24xx *els_iocb)
1784 {
1785 struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job;
1786
1787 els_iocb->entry_type = ELS_IOCB_TYPE;
1788 els_iocb->entry_count = 1;
1789 els_iocb->sys_define = 0;
1790 els_iocb->entry_status = 0;
1791 els_iocb->handle = sp->handle;
1792 els_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1793 els_iocb->tx_dsd_count = __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
1794 els_iocb->vp_index = sp->fcport->vp_idx;
1795 els_iocb->sof_type = EST_SOFI3;
1796 els_iocb->rx_dsd_count = __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt);
1797
1798 els_iocb->opcode =
1799 (((struct srb_ctx *)sp->ctx)->type == SRB_ELS_CMD_RPT) ?
1800 bsg_job->request->rqst_data.r_els.els_code :
1801 bsg_job->request->rqst_data.h_els.command_code;
1802 els_iocb->port_id[0] = sp->fcport->d_id.b.al_pa;
1803 els_iocb->port_id[1] = sp->fcport->d_id.b.area;
1804 els_iocb->port_id[2] = sp->fcport->d_id.b.domain;
1805 els_iocb->control_flags = 0;
1806 els_iocb->rx_byte_count =
1807 cpu_to_le32(bsg_job->reply_payload.payload_len);
1808 els_iocb->tx_byte_count =
1809 cpu_to_le32(bsg_job->request_payload.payload_len);
1810
1811 els_iocb->tx_address[0] = cpu_to_le32(LSD(sg_dma_address
1812 (bsg_job->request_payload.sg_list)));
1813 els_iocb->tx_address[1] = cpu_to_le32(MSD(sg_dma_address
1814 (bsg_job->request_payload.sg_list)));
1815 els_iocb->tx_len = cpu_to_le32(sg_dma_len
1816 (bsg_job->request_payload.sg_list));
1817
1818 els_iocb->rx_address[0] = cpu_to_le32(LSD(sg_dma_address
1819 (bsg_job->reply_payload.sg_list)));
1820 els_iocb->rx_address[1] = cpu_to_le32(MSD(sg_dma_address
1821 (bsg_job->reply_payload.sg_list)));
1822 els_iocb->rx_len = cpu_to_le32(sg_dma_len
1823 (bsg_job->reply_payload.sg_list));
1824 }
1825
1826 static void
1827 qla2x00_ct_iocb(srb_t *sp, ms_iocb_entry_t *ct_iocb)
1828 {
1829 uint16_t avail_dsds;
1830 uint32_t *cur_dsd;
1831 struct scatterlist *sg;
1832 int index;
1833 uint16_t tot_dsds;
1834 scsi_qla_host_t *vha = sp->fcport->vha;
1835 struct qla_hw_data *ha = vha->hw;
1836 struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job;
1837 int loop_iterartion = 0;
1838 int cont_iocb_prsnt = 0;
1839 int entry_count = 1;
1840
1841 memset(ct_iocb, 0, sizeof(ms_iocb_entry_t));
1842 ct_iocb->entry_type = CT_IOCB_TYPE;
1843 ct_iocb->entry_status = 0;
1844 ct_iocb->handle1 = sp->handle;
1845 SET_TARGET_ID(ha, ct_iocb->loop_id, sp->fcport->loop_id);
1846 ct_iocb->status = __constant_cpu_to_le16(0);
1847 ct_iocb->control_flags = __constant_cpu_to_le16(0);
1848 ct_iocb->timeout = 0;
1849 ct_iocb->cmd_dsd_count =
1850 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
1851 ct_iocb->total_dsd_count =
1852 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt + 1);
1853 ct_iocb->req_bytecount =
1854 cpu_to_le32(bsg_job->request_payload.payload_len);
1855 ct_iocb->rsp_bytecount =
1856 cpu_to_le32(bsg_job->reply_payload.payload_len);
1857
1858 ct_iocb->dseg_req_address[0] = cpu_to_le32(LSD(sg_dma_address
1859 (bsg_job->request_payload.sg_list)));
1860 ct_iocb->dseg_req_address[1] = cpu_to_le32(MSD(sg_dma_address
1861 (bsg_job->request_payload.sg_list)));
1862 ct_iocb->dseg_req_length = ct_iocb->req_bytecount;
1863
1864 ct_iocb->dseg_rsp_address[0] = cpu_to_le32(LSD(sg_dma_address
1865 (bsg_job->reply_payload.sg_list)));
1866 ct_iocb->dseg_rsp_address[1] = cpu_to_le32(MSD(sg_dma_address
1867 (bsg_job->reply_payload.sg_list)));
1868 ct_iocb->dseg_rsp_length = ct_iocb->rsp_bytecount;
1869
1870 avail_dsds = 1;
1871 cur_dsd = (uint32_t *)ct_iocb->dseg_rsp_address;
1872 index = 0;
1873 tot_dsds = bsg_job->reply_payload.sg_cnt;
1874
1875 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
1876 dma_addr_t sle_dma;
1877 cont_a64_entry_t *cont_pkt;
1878
1879 /* Allocate additional continuation packets? */
1880 if (avail_dsds == 0) {
1881 /*
1882 * Five DSDs are available in the Cont.
1883 * Type 1 IOCB.
1884 */
1885 cont_pkt = qla2x00_prep_cont_type1_iocb(vha);
1886 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
1887 avail_dsds = 5;
1888 cont_iocb_prsnt = 1;
1889 entry_count++;
1890 }
1891
1892 sle_dma = sg_dma_address(sg);
1893 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1894 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1895 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1896 loop_iterartion++;
1897 avail_dsds--;
1898 }
1899 ct_iocb->entry_count = entry_count;
1900 }
1901
1902 static void
1903 qla24xx_ct_iocb(srb_t *sp, struct ct_entry_24xx *ct_iocb)
1904 {
1905 uint16_t avail_dsds;
1906 uint32_t *cur_dsd;
1907 struct scatterlist *sg;
1908 int index;
1909 uint16_t tot_dsds;
1910 scsi_qla_host_t *vha = sp->fcport->vha;
1911 struct fc_bsg_job *bsg_job = ((struct srb_ctx *)sp->ctx)->u.bsg_job;
1912 int loop_iterartion = 0;
1913 int cont_iocb_prsnt = 0;
1914 int entry_count = 1;
1915
1916 ct_iocb->entry_type = CT_IOCB_TYPE;
1917 ct_iocb->entry_status = 0;
1918 ct_iocb->sys_define = 0;
1919 ct_iocb->handle = sp->handle;
1920
1921 ct_iocb->nport_handle = cpu_to_le16(sp->fcport->loop_id);
1922 ct_iocb->vp_index = sp->fcport->vp_idx;
1923 ct_iocb->comp_status = __constant_cpu_to_le16(0);
1924
1925 ct_iocb->cmd_dsd_count =
1926 __constant_cpu_to_le16(bsg_job->request_payload.sg_cnt);
1927 ct_iocb->timeout = 0;
1928 ct_iocb->rsp_dsd_count =
1929 __constant_cpu_to_le16(bsg_job->reply_payload.sg_cnt);
1930 ct_iocb->rsp_byte_count =
1931 cpu_to_le32(bsg_job->reply_payload.payload_len);
1932 ct_iocb->cmd_byte_count =
1933 cpu_to_le32(bsg_job->request_payload.payload_len);
1934 ct_iocb->dseg_0_address[0] = cpu_to_le32(LSD(sg_dma_address
1935 (bsg_job->request_payload.sg_list)));
1936 ct_iocb->dseg_0_address[1] = cpu_to_le32(MSD(sg_dma_address
1937 (bsg_job->request_payload.sg_list)));
1938 ct_iocb->dseg_0_len = cpu_to_le32(sg_dma_len
1939 (bsg_job->request_payload.sg_list));
1940
1941 avail_dsds = 1;
1942 cur_dsd = (uint32_t *)ct_iocb->dseg_1_address;
1943 index = 0;
1944 tot_dsds = bsg_job->reply_payload.sg_cnt;
1945
1946 for_each_sg(bsg_job->reply_payload.sg_list, sg, tot_dsds, index) {
1947 dma_addr_t sle_dma;
1948 cont_a64_entry_t *cont_pkt;
1949
1950 /* Allocate additional continuation packets? */
1951 if (avail_dsds == 0) {
1952 /*
1953 * Five DSDs are available in the Cont.
1954 * Type 1 IOCB.
1955 */
1956 cont_pkt = qla2x00_prep_cont_type1_iocb(vha);
1957 cur_dsd = (uint32_t *) cont_pkt->dseg_0_address;
1958 avail_dsds = 5;
1959 cont_iocb_prsnt = 1;
1960 entry_count++;
1961 }
1962
1963 sle_dma = sg_dma_address(sg);
1964 *cur_dsd++ = cpu_to_le32(LSD(sle_dma));
1965 *cur_dsd++ = cpu_to_le32(MSD(sle_dma));
1966 *cur_dsd++ = cpu_to_le32(sg_dma_len(sg));
1967 loop_iterartion++;
1968 avail_dsds--;
1969 }
1970 ct_iocb->entry_count = entry_count;
1971 }
1972
1973 int
1974 qla2x00_start_sp(srb_t *sp)
1975 {
1976 int rval;
1977 struct qla_hw_data *ha = sp->fcport->vha->hw;
1978 void *pkt;
1979 struct srb_ctx *ctx = sp->ctx;
1980 unsigned long flags;
1981
1982 rval = QLA_FUNCTION_FAILED;
1983 spin_lock_irqsave(&ha->hardware_lock, flags);
1984 pkt = qla2x00_alloc_iocbs(sp->fcport->vha, sp);
1985 if (!pkt) {
1986 ql_log(ql_log_warn, sp->fcport->vha, 0x700c,
1987 "qla2x00_alloc_iocbs failed.\n");
1988 goto done;
1989 }
1990
1991 rval = QLA_SUCCESS;
1992 switch (ctx->type) {
1993 case SRB_LOGIN_CMD:
1994 IS_FWI2_CAPABLE(ha) ?
1995 qla24xx_login_iocb(sp, pkt) :
1996 qla2x00_login_iocb(sp, pkt);
1997 break;
1998 case SRB_LOGOUT_CMD:
1999 IS_FWI2_CAPABLE(ha) ?
2000 qla24xx_logout_iocb(sp, pkt) :
2001 qla2x00_logout_iocb(sp, pkt);
2002 break;
2003 case SRB_ELS_CMD_RPT:
2004 case SRB_ELS_CMD_HST:
2005 qla24xx_els_iocb(sp, pkt);
2006 break;
2007 case SRB_CT_CMD:
2008 IS_FWI2_CAPABLE(ha) ?
2009 qla24xx_ct_iocb(sp, pkt) :
2010 qla2x00_ct_iocb(sp, pkt);
2011 break;
2012 case SRB_ADISC_CMD:
2013 IS_FWI2_CAPABLE(ha) ?
2014 qla24xx_adisc_iocb(sp, pkt) :
2015 qla2x00_adisc_iocb(sp, pkt);
2016 break;
2017 case SRB_TM_CMD:
2018 qla24xx_tm_iocb(sp, pkt);
2019 break;
2020 default:
2021 break;
2022 }
2023
2024 wmb();
2025 qla2x00_start_iocbs(sp);
2026 done:
2027 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2028 return rval;
2029 }