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[mirror_ubuntu-focal-kernel.git] / drivers / scsi / bfa / bfad_im.c
1 /*
2 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
3 * All rights reserved
4 * www.brocade.com
5 *
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License (GPL) Version 2 as
10 * published by the Free Software Foundation
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 */
17
18 /*
19 * bfad_im.c Linux driver IM module.
20 */
21
22 #include <linux/export.h>
23
24 #include "bfad_drv.h"
25 #include "bfad_im.h"
26 #include "bfa_fcs.h"
27
28 BFA_TRC_FILE(LDRV, IM);
29
30 DEFINE_IDR(bfad_im_port_index);
31 struct scsi_transport_template *bfad_im_scsi_transport_template;
32 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
33 static void bfad_im_itnim_work_handler(struct work_struct *work);
34 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
35 static int bfad_im_slave_alloc(struct scsi_device *sdev);
36 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
37 struct bfad_itnim_s *itnim);
38
39 void
40 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
41 enum bfi_ioim_status io_status, u8 scsi_status,
42 int sns_len, u8 *sns_info, s32 residue)
43 {
44 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
45 struct bfad_s *bfad = drv;
46 struct bfad_itnim_data_s *itnim_data;
47 struct bfad_itnim_s *itnim;
48 u8 host_status = DID_OK;
49
50 switch (io_status) {
51 case BFI_IOIM_STS_OK:
52 bfa_trc(bfad, scsi_status);
53 scsi_set_resid(cmnd, 0);
54
55 if (sns_len > 0) {
56 bfa_trc(bfad, sns_len);
57 if (sns_len > SCSI_SENSE_BUFFERSIZE)
58 sns_len = SCSI_SENSE_BUFFERSIZE;
59 memcpy(cmnd->sense_buffer, sns_info, sns_len);
60 }
61
62 if (residue > 0) {
63 bfa_trc(bfad, residue);
64 scsi_set_resid(cmnd, residue);
65 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
66 (scsi_bufflen(cmnd) - residue) <
67 cmnd->underflow) {
68 bfa_trc(bfad, 0);
69 host_status = DID_ERROR;
70 }
71 }
72 cmnd->result = ScsiResult(host_status, scsi_status);
73
74 break;
75
76 case BFI_IOIM_STS_TIMEDOUT:
77 host_status = DID_TIME_OUT;
78 cmnd->result = ScsiResult(host_status, 0);
79 break;
80 case BFI_IOIM_STS_PATHTOV:
81 host_status = DID_TRANSPORT_DISRUPTED;
82 cmnd->result = ScsiResult(host_status, 0);
83 break;
84 default:
85 host_status = DID_ERROR;
86 cmnd->result = ScsiResult(host_status, 0);
87 }
88
89 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
90 if (cmnd->device->host != NULL)
91 scsi_dma_unmap(cmnd);
92
93 cmnd->host_scribble = NULL;
94 bfa_trc(bfad, cmnd->result);
95
96 itnim_data = cmnd->device->hostdata;
97 if (itnim_data) {
98 itnim = itnim_data->itnim;
99 if (!cmnd->result && itnim &&
100 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
101 /* Queue depth adjustment for good status completion */
102 bfad_ramp_up_qdepth(itnim, cmnd->device);
103 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
104 /* qfull handling */
105 bfad_handle_qfull(itnim, cmnd->device);
106 }
107 }
108
109 cmnd->scsi_done(cmnd);
110 }
111
112 void
113 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
114 {
115 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
116 struct bfad_itnim_data_s *itnim_data;
117 struct bfad_itnim_s *itnim;
118
119 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
120
121 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
122 if (cmnd->device->host != NULL)
123 scsi_dma_unmap(cmnd);
124
125 cmnd->host_scribble = NULL;
126
127 /* Queue depth adjustment */
128 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
129 itnim_data = cmnd->device->hostdata;
130 if (itnim_data) {
131 itnim = itnim_data->itnim;
132 if (itnim)
133 bfad_ramp_up_qdepth(itnim, cmnd->device);
134 }
135 }
136
137 cmnd->scsi_done(cmnd);
138 }
139
140 void
141 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
142 {
143 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
144 struct bfad_s *bfad = drv;
145
146 cmnd->result = ScsiResult(DID_ERROR, 0);
147
148 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
149 if (cmnd->device->host != NULL)
150 scsi_dma_unmap(cmnd);
151
152 bfa_trc(bfad, cmnd->result);
153 cmnd->host_scribble = NULL;
154 }
155
156 void
157 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
158 enum bfi_tskim_status tsk_status)
159 {
160 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
161 wait_queue_head_t *wq;
162
163 cmnd->SCp.Status |= tsk_status << 1;
164 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
165 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
166 cmnd->SCp.ptr = NULL;
167
168 if (wq)
169 wake_up(wq);
170 }
171
172 /*
173 * Scsi_Host_template SCSI host template
174 */
175 /*
176 * Scsi_Host template entry, returns BFAD PCI info.
177 */
178 static const char *
179 bfad_im_info(struct Scsi_Host *shost)
180 {
181 static char bfa_buf[256];
182 struct bfad_im_port_s *im_port =
183 (struct bfad_im_port_s *) shost->hostdata[0];
184 struct bfad_s *bfad = im_port->bfad;
185
186 memset(bfa_buf, 0, sizeof(bfa_buf));
187 snprintf(bfa_buf, sizeof(bfa_buf),
188 "Brocade FC/FCOE Adapter, " "hwpath: %s driver: %s",
189 bfad->pci_name, BFAD_DRIVER_VERSION);
190
191 return bfa_buf;
192 }
193
194 /*
195 * Scsi_Host template entry, aborts the specified SCSI command.
196 *
197 * Returns: SUCCESS or FAILED.
198 */
199 static int
200 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
201 {
202 struct Scsi_Host *shost = cmnd->device->host;
203 struct bfad_im_port_s *im_port =
204 (struct bfad_im_port_s *) shost->hostdata[0];
205 struct bfad_s *bfad = im_port->bfad;
206 struct bfa_ioim_s *hal_io;
207 unsigned long flags;
208 u32 timeout;
209 int rc = FAILED;
210
211 spin_lock_irqsave(&bfad->bfad_lock, flags);
212 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
213 if (!hal_io) {
214 /* IO has been completed, return success */
215 rc = SUCCESS;
216 goto out;
217 }
218 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
219 rc = FAILED;
220 goto out;
221 }
222
223 bfa_trc(bfad, hal_io->iotag);
224 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
225 "scsi%d: abort cmnd %p iotag %x\n",
226 im_port->shost->host_no, cmnd, hal_io->iotag);
227 (void) bfa_ioim_abort(hal_io);
228 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
229
230 /* Need to wait until the command get aborted */
231 timeout = 10;
232 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
233 set_current_state(TASK_UNINTERRUPTIBLE);
234 schedule_timeout(timeout);
235 if (timeout < 4 * HZ)
236 timeout *= 2;
237 }
238
239 cmnd->scsi_done(cmnd);
240 bfa_trc(bfad, hal_io->iotag);
241 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
242 "scsi%d: complete abort 0x%p iotag 0x%x\n",
243 im_port->shost->host_no, cmnd, hal_io->iotag);
244 return SUCCESS;
245 out:
246 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
247 return rc;
248 }
249
250 static bfa_status_t
251 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
252 struct bfad_itnim_s *itnim)
253 {
254 struct bfa_tskim_s *tskim;
255 struct bfa_itnim_s *bfa_itnim;
256 bfa_status_t rc = BFA_STATUS_OK;
257 struct scsi_lun scsilun;
258
259 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
260 if (!tskim) {
261 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
262 "target reset, fail to allocate tskim\n");
263 rc = BFA_STATUS_FAILED;
264 goto out;
265 }
266
267 /*
268 * Set host_scribble to NULL to avoid aborting a task command if
269 * happens.
270 */
271 cmnd->host_scribble = NULL;
272 cmnd->SCp.Status = 0;
273 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
274 memset(&scsilun, 0, sizeof(scsilun));
275 bfa_tskim_start(tskim, bfa_itnim, scsilun,
276 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
277 out:
278 return rc;
279 }
280
281 /*
282 * Scsi_Host template entry, resets a LUN and abort its all commands.
283 *
284 * Returns: SUCCESS or FAILED.
285 *
286 */
287 static int
288 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
289 {
290 struct Scsi_Host *shost = cmnd->device->host;
291 struct bfad_im_port_s *im_port =
292 (struct bfad_im_port_s *) shost->hostdata[0];
293 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
294 struct bfad_s *bfad = im_port->bfad;
295 struct bfa_tskim_s *tskim;
296 struct bfad_itnim_s *itnim;
297 struct bfa_itnim_s *bfa_itnim;
298 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
299 int rc = SUCCESS;
300 unsigned long flags;
301 enum bfi_tskim_status task_status;
302 struct scsi_lun scsilun;
303
304 spin_lock_irqsave(&bfad->bfad_lock, flags);
305 itnim = itnim_data->itnim;
306 if (!itnim) {
307 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
308 rc = FAILED;
309 goto out;
310 }
311
312 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
313 if (!tskim) {
314 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
315 "LUN reset, fail to allocate tskim");
316 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
317 rc = FAILED;
318 goto out;
319 }
320
321 /*
322 * Set host_scribble to NULL to avoid aborting a task command
323 * if happens.
324 */
325 cmnd->host_scribble = NULL;
326 cmnd->SCp.ptr = (char *)&wq;
327 cmnd->SCp.Status = 0;
328 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
329 int_to_scsilun(cmnd->device->lun, &scsilun);
330 bfa_tskim_start(tskim, bfa_itnim, scsilun,
331 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
332 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
333
334 wait_event(wq, test_bit(IO_DONE_BIT,
335 (unsigned long *)&cmnd->SCp.Status));
336
337 task_status = cmnd->SCp.Status >> 1;
338 if (task_status != BFI_TSKIM_STS_OK) {
339 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
340 "LUN reset failure, status: %d\n", task_status);
341 rc = FAILED;
342 }
343
344 out:
345 return rc;
346 }
347
348 /*
349 * Scsi_Host template entry, resets the bus and abort all commands.
350 */
351 static int
352 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
353 {
354 struct Scsi_Host *shost = cmnd->device->host;
355 struct bfad_im_port_s *im_port =
356 (struct bfad_im_port_s *) shost->hostdata[0];
357 struct bfad_s *bfad = im_port->bfad;
358 struct bfad_itnim_s *itnim;
359 unsigned long flags;
360 u32 i, rc, err_cnt = 0;
361 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
362 enum bfi_tskim_status task_status;
363
364 spin_lock_irqsave(&bfad->bfad_lock, flags);
365 for (i = 0; i < MAX_FCP_TARGET; i++) {
366 itnim = bfad_get_itnim(im_port, i);
367 if (itnim) {
368 cmnd->SCp.ptr = (char *)&wq;
369 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
370 if (rc != BFA_STATUS_OK) {
371 err_cnt++;
372 continue;
373 }
374
375 /* wait target reset to complete */
376 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
377 wait_event(wq, test_bit(IO_DONE_BIT,
378 (unsigned long *)&cmnd->SCp.Status));
379 spin_lock_irqsave(&bfad->bfad_lock, flags);
380
381 task_status = cmnd->SCp.Status >> 1;
382 if (task_status != BFI_TSKIM_STS_OK) {
383 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
384 "target reset failure,"
385 " status: %d\n", task_status);
386 err_cnt++;
387 }
388 }
389 }
390 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
391
392 if (err_cnt)
393 return FAILED;
394
395 return SUCCESS;
396 }
397
398 /*
399 * Scsi_Host template entry slave_destroy.
400 */
401 static void
402 bfad_im_slave_destroy(struct scsi_device *sdev)
403 {
404 sdev->hostdata = NULL;
405 return;
406 }
407
408 /*
409 * BFA FCS itnim callbacks
410 */
411
412 /*
413 * BFA FCS itnim alloc callback, after successful PRLI
414 * Context: Interrupt
415 */
416 void
417 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
418 struct bfad_itnim_s **itnim_drv)
419 {
420 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
421 if (*itnim_drv == NULL)
422 return;
423
424 (*itnim_drv)->im = bfad->im;
425 *itnim = &(*itnim_drv)->fcs_itnim;
426 (*itnim_drv)->state = ITNIM_STATE_NONE;
427
428 /*
429 * Initiaze the itnim_work
430 */
431 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
432 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
433 }
434
435 /*
436 * BFA FCS itnim free callback.
437 * Context: Interrupt. bfad_lock is held
438 */
439 void
440 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
441 {
442 struct bfad_port_s *port;
443 wwn_t wwpn;
444 u32 fcid;
445 char wwpn_str[32], fcid_str[16];
446 struct bfad_im_s *im = itnim_drv->im;
447
448 /* online to free state transtion should not happen */
449 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
450
451 itnim_drv->queue_work = 1;
452 /* offline request is not yet done, use the same request to free */
453 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
454 itnim_drv->queue_work = 0;
455
456 itnim_drv->state = ITNIM_STATE_FREE;
457 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
458 itnim_drv->im_port = port->im_port;
459 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
460 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
461 wwn2str(wwpn_str, wwpn);
462 fcid2str(fcid_str, fcid);
463 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
464 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
465 port->im_port->shost->host_no,
466 fcid_str, wwpn_str);
467
468 /* ITNIM processing */
469 if (itnim_drv->queue_work)
470 queue_work(im->drv_workq, &itnim_drv->itnim_work);
471 }
472
473 /*
474 * BFA FCS itnim online callback.
475 * Context: Interrupt. bfad_lock is held
476 */
477 void
478 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
479 {
480 struct bfad_port_s *port;
481 struct bfad_im_s *im = itnim_drv->im;
482
483 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
484 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
485 itnim_drv->state = ITNIM_STATE_ONLINE;
486 itnim_drv->queue_work = 1;
487 itnim_drv->im_port = port->im_port;
488
489 /* ITNIM processing */
490 if (itnim_drv->queue_work)
491 queue_work(im->drv_workq, &itnim_drv->itnim_work);
492 }
493
494 /*
495 * BFA FCS itnim offline callback.
496 * Context: Interrupt. bfad_lock is held
497 */
498 void
499 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
500 {
501 struct bfad_port_s *port;
502 struct bfad_s *bfad;
503 struct bfad_im_s *im = itnim_drv->im;
504
505 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
506 bfad = port->bfad;
507 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
508 (port->flags & BFAD_PORT_DELETE)) {
509 itnim_drv->state = ITNIM_STATE_OFFLINE;
510 return;
511 }
512 itnim_drv->im_port = port->im_port;
513 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
514 itnim_drv->queue_work = 1;
515
516 /* ITNIM processing */
517 if (itnim_drv->queue_work)
518 queue_work(im->drv_workq, &itnim_drv->itnim_work);
519 }
520
521 /*
522 * Allocate a Scsi_Host for a port.
523 */
524 int
525 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
526 struct device *dev)
527 {
528 int error = 1;
529
530 mutex_lock(&bfad_mutex);
531 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
532 if (error < 0) {
533 mutex_unlock(&bfad_mutex);
534 printk(KERN_WARNING "idr_alloc failure\n");
535 goto out;
536 }
537 im_port->idr_id = error;
538 mutex_unlock(&bfad_mutex);
539
540 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
541 if (!im_port->shost) {
542 error = 1;
543 goto out_free_idr;
544 }
545
546 im_port->shost->hostdata[0] = (unsigned long)im_port;
547 im_port->shost->unique_id = im_port->idr_id;
548 im_port->shost->this_id = -1;
549 im_port->shost->max_id = MAX_FCP_TARGET;
550 im_port->shost->max_lun = MAX_FCP_LUN;
551 im_port->shost->max_cmd_len = 16;
552 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
553 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
554 im_port->shost->transportt = bfad_im_scsi_transport_template;
555 else
556 im_port->shost->transportt =
557 bfad_im_scsi_vport_transport_template;
558
559 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
560 if (error) {
561 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
562 goto out_fc_rel;
563 }
564
565 return 0;
566
567 out_fc_rel:
568 scsi_host_put(im_port->shost);
569 im_port->shost = NULL;
570 out_free_idr:
571 mutex_lock(&bfad_mutex);
572 idr_remove(&bfad_im_port_index, im_port->idr_id);
573 mutex_unlock(&bfad_mutex);
574 out:
575 return error;
576 }
577
578 void
579 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
580 {
581 bfa_trc(bfad, bfad->inst_no);
582 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
583 im_port->shost->host_no);
584
585 fc_remove_host(im_port->shost);
586
587 scsi_remove_host(im_port->shost);
588 scsi_host_put(im_port->shost);
589
590 mutex_lock(&bfad_mutex);
591 idr_remove(&bfad_im_port_index, im_port->idr_id);
592 mutex_unlock(&bfad_mutex);
593 }
594
595 static void
596 bfad_im_port_delete_handler(struct work_struct *work)
597 {
598 struct bfad_im_port_s *im_port =
599 container_of(work, struct bfad_im_port_s, port_delete_work);
600
601 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
602 im_port->flags |= BFAD_PORT_DELETE;
603 fc_vport_terminate(im_port->fc_vport);
604 }
605 }
606
607 bfa_status_t
608 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
609 {
610 int rc = BFA_STATUS_OK;
611 struct bfad_im_port_s *im_port;
612
613 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
614 if (im_port == NULL) {
615 rc = BFA_STATUS_ENOMEM;
616 goto ext;
617 }
618 port->im_port = im_port;
619 im_port->port = port;
620 im_port->bfad = bfad;
621
622 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
623 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
624 INIT_LIST_HEAD(&im_port->binding_list);
625
626 ext:
627 return rc;
628 }
629
630 void
631 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
632 {
633 struct bfad_im_port_s *im_port = port->im_port;
634
635 queue_work(bfad->im->drv_workq,
636 &im_port->port_delete_work);
637 }
638
639 void
640 bfad_im_port_clean(struct bfad_im_port_s *im_port)
641 {
642 struct bfad_fcp_binding *bp, *bp_new;
643 unsigned long flags;
644 struct bfad_s *bfad = im_port->bfad;
645
646 spin_lock_irqsave(&bfad->bfad_lock, flags);
647 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
648 list_entry) {
649 list_del(&bp->list_entry);
650 kfree(bp);
651 }
652
653 /* the itnim_mapped_list must be empty at this time */
654 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
655
656 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
657 }
658
659 static void bfad_aen_im_notify_handler(struct work_struct *work)
660 {
661 struct bfad_im_s *im =
662 container_of(work, struct bfad_im_s, aen_im_notify_work);
663 struct bfa_aen_entry_s *aen_entry;
664 struct bfad_s *bfad = im->bfad;
665 struct Scsi_Host *shost = bfad->pport.im_port->shost;
666 void *event_data;
667 unsigned long flags;
668
669 while (!list_empty(&bfad->active_aen_q)) {
670 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
671 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
672 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
673 event_data = (char *)aen_entry + sizeof(struct list_head);
674 fc_host_post_vendor_event(shost, fc_get_event_number(),
675 sizeof(struct bfa_aen_entry_s) -
676 sizeof(struct list_head),
677 (char *)event_data, BFAD_NL_VENDOR_ID);
678 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
679 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
680 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
681 }
682 }
683
684 bfa_status_t
685 bfad_im_probe(struct bfad_s *bfad)
686 {
687 struct bfad_im_s *im;
688
689 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
690 if (im == NULL)
691 return BFA_STATUS_ENOMEM;
692
693 bfad->im = im;
694 im->bfad = bfad;
695
696 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
697 kfree(im);
698 return BFA_STATUS_FAILED;
699 }
700
701 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
702 return BFA_STATUS_OK;
703 }
704
705 void
706 bfad_im_probe_undo(struct bfad_s *bfad)
707 {
708 if (bfad->im) {
709 bfad_destroy_workq(bfad->im);
710 kfree(bfad->im);
711 bfad->im = NULL;
712 }
713 }
714
715 struct Scsi_Host *
716 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
717 {
718 struct scsi_host_template *sht;
719
720 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
721 sht = &bfad_im_scsi_host_template;
722 else
723 sht = &bfad_im_vport_template;
724
725 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
726 sht->max_sectors = max_xfer_size << 1;
727
728 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
729
730 return scsi_host_alloc(sht, sizeof(unsigned long));
731 }
732
733 void
734 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
735 {
736 if (!(im_port->flags & BFAD_PORT_DELETE))
737 flush_workqueue(bfad->im->drv_workq);
738 bfad_im_scsi_host_free(im_port->bfad, im_port);
739 bfad_im_port_clean(im_port);
740 kfree(im_port);
741 }
742
743 void
744 bfad_destroy_workq(struct bfad_im_s *im)
745 {
746 if (im && im->drv_workq) {
747 flush_workqueue(im->drv_workq);
748 destroy_workqueue(im->drv_workq);
749 im->drv_workq = NULL;
750 }
751 }
752
753 bfa_status_t
754 bfad_thread_workq(struct bfad_s *bfad)
755 {
756 struct bfad_im_s *im = bfad->im;
757
758 bfa_trc(bfad, 0);
759 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
760 bfad->inst_no);
761 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
762 if (!im->drv_workq)
763 return BFA_STATUS_FAILED;
764
765 return BFA_STATUS_OK;
766 }
767
768 /*
769 * Scsi_Host template entry.
770 *
771 * Description:
772 * OS entry point to adjust the queue_depths on a per-device basis.
773 * Called once per device during the bus scan.
774 * Return non-zero if fails.
775 */
776 static int
777 bfad_im_slave_configure(struct scsi_device *sdev)
778 {
779 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
780 return 0;
781 }
782
783 struct scsi_host_template bfad_im_scsi_host_template = {
784 .module = THIS_MODULE,
785 .name = BFAD_DRIVER_NAME,
786 .info = bfad_im_info,
787 .queuecommand = bfad_im_queuecommand,
788 .eh_abort_handler = bfad_im_abort_handler,
789 .eh_device_reset_handler = bfad_im_reset_lun_handler,
790 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
791
792 .slave_alloc = bfad_im_slave_alloc,
793 .slave_configure = bfad_im_slave_configure,
794 .slave_destroy = bfad_im_slave_destroy,
795
796 .this_id = -1,
797 .sg_tablesize = BFAD_IO_MAX_SGE,
798 .cmd_per_lun = 3,
799 .use_clustering = ENABLE_CLUSTERING,
800 .shost_attrs = bfad_im_host_attrs,
801 .max_sectors = BFAD_MAX_SECTORS,
802 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
803 .use_blk_tags = 1,
804 };
805
806 struct scsi_host_template bfad_im_vport_template = {
807 .module = THIS_MODULE,
808 .name = BFAD_DRIVER_NAME,
809 .info = bfad_im_info,
810 .queuecommand = bfad_im_queuecommand,
811 .eh_abort_handler = bfad_im_abort_handler,
812 .eh_device_reset_handler = bfad_im_reset_lun_handler,
813 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
814
815 .slave_alloc = bfad_im_slave_alloc,
816 .slave_configure = bfad_im_slave_configure,
817 .slave_destroy = bfad_im_slave_destroy,
818
819 .this_id = -1,
820 .sg_tablesize = BFAD_IO_MAX_SGE,
821 .cmd_per_lun = 3,
822 .use_clustering = ENABLE_CLUSTERING,
823 .shost_attrs = bfad_im_vport_attrs,
824 .max_sectors = BFAD_MAX_SECTORS,
825 .use_blk_tags = 1,
826 };
827
828 bfa_status_t
829 bfad_im_module_init(void)
830 {
831 bfad_im_scsi_transport_template =
832 fc_attach_transport(&bfad_im_fc_function_template);
833 if (!bfad_im_scsi_transport_template)
834 return BFA_STATUS_ENOMEM;
835
836 bfad_im_scsi_vport_transport_template =
837 fc_attach_transport(&bfad_im_vport_fc_function_template);
838 if (!bfad_im_scsi_vport_transport_template) {
839 fc_release_transport(bfad_im_scsi_transport_template);
840 return BFA_STATUS_ENOMEM;
841 }
842
843 return BFA_STATUS_OK;
844 }
845
846 void
847 bfad_im_module_exit(void)
848 {
849 if (bfad_im_scsi_transport_template)
850 fc_release_transport(bfad_im_scsi_transport_template);
851
852 if (bfad_im_scsi_vport_transport_template)
853 fc_release_transport(bfad_im_scsi_vport_transport_template);
854 }
855
856 void
857 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
858 {
859 struct scsi_device *tmp_sdev;
860
861 if (((jiffies - itnim->last_ramp_up_time) >
862 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
863 ((jiffies - itnim->last_queue_full_time) >
864 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
865 shost_for_each_device(tmp_sdev, sdev->host) {
866 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
867 if (tmp_sdev->id != sdev->id)
868 continue;
869 scsi_change_queue_depth(tmp_sdev,
870 tmp_sdev->queue_depth + 1);
871
872 itnim->last_ramp_up_time = jiffies;
873 }
874 }
875 }
876 }
877
878 void
879 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
880 {
881 struct scsi_device *tmp_sdev;
882
883 itnim->last_queue_full_time = jiffies;
884
885 shost_for_each_device(tmp_sdev, sdev->host) {
886 if (tmp_sdev->id != sdev->id)
887 continue;
888 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
889 }
890 }
891
892 struct bfad_itnim_s *
893 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
894 {
895 struct bfad_itnim_s *itnim = NULL;
896
897 /* Search the mapped list for this target ID */
898 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
899 if (id == itnim->scsi_tgt_id)
900 return itnim;
901 }
902
903 return NULL;
904 }
905
906 /*
907 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
908 * Has the logic to query the LUN Mask database to check if this LUN needs to
909 * be made visible to the SCSI mid-layer or not.
910 *
911 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
912 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
913 */
914 static int
915 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
916 struct fc_rport *rport)
917 {
918 struct bfad_itnim_data_s *itnim_data =
919 (struct bfad_itnim_data_s *) rport->dd_data;
920 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
921 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
922 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
923 int i = 0, ret = -ENXIO;
924
925 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
926 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
927 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
928 lun_list[i].rp_tag == bfa_rport->rport_tag &&
929 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
930 ret = BFA_STATUS_OK;
931 break;
932 }
933 }
934 return ret;
935 }
936
937 /*
938 * Scsi_Host template entry slave_alloc
939 */
940 static int
941 bfad_im_slave_alloc(struct scsi_device *sdev)
942 {
943 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
944 struct bfad_itnim_data_s *itnim_data;
945 struct bfa_s *bfa;
946
947 if (!rport || fc_remote_port_chkready(rport))
948 return -ENXIO;
949
950 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
951 bfa = itnim_data->itnim->bfa_itnim->bfa;
952
953 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
954 /*
955 * We should not mask LUN 0 - since this will translate
956 * to no LUN / TARGET for SCSI ml resulting no scan.
957 */
958 if (sdev->lun == 0) {
959 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
960 BLIST_SPARSELUN;
961 goto done;
962 }
963
964 /*
965 * Query LUN Mask configuration - to expose this LUN
966 * to the SCSI mid-layer or to mask it.
967 */
968 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
969 BFA_STATUS_OK)
970 return -ENXIO;
971 }
972 done:
973 sdev->hostdata = rport->dd_data;
974
975 return 0;
976 }
977
978 u32
979 bfad_im_supported_speeds(struct bfa_s *bfa)
980 {
981 struct bfa_ioc_attr_s *ioc_attr;
982 u32 supported_speed = 0;
983
984 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
985 if (!ioc_attr)
986 return 0;
987
988 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
989 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
990 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
991 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
992 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
993 if (ioc_attr->adapter_attr.is_mezz) {
994 supported_speed |= FC_PORTSPEED_8GBIT |
995 FC_PORTSPEED_4GBIT |
996 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
997 } else {
998 supported_speed |= FC_PORTSPEED_8GBIT |
999 FC_PORTSPEED_4GBIT |
1000 FC_PORTSPEED_2GBIT;
1001 }
1002 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1003 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1004 FC_PORTSPEED_1GBIT;
1005 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1006 supported_speed |= FC_PORTSPEED_10GBIT;
1007 }
1008 kfree(ioc_attr);
1009 return supported_speed;
1010 }
1011
1012 void
1013 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1014 {
1015 struct Scsi_Host *host = im_port->shost;
1016 struct bfad_s *bfad = im_port->bfad;
1017 struct bfad_port_s *port = im_port->port;
1018 char symname[BFA_SYMNAME_MAXLEN];
1019 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1020
1021 fc_host_node_name(host) =
1022 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1023 fc_host_port_name(host) =
1024 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1025 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1026
1027 fc_host_supported_classes(host) = FC_COS_CLASS3;
1028
1029 memset(fc_host_supported_fc4s(host), 0,
1030 sizeof(fc_host_supported_fc4s(host)));
1031 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1032 /* For FCP type 0x08 */
1033 fc_host_supported_fc4s(host)[2] = 1;
1034 /* For fibre channel services type 0x20 */
1035 fc_host_supported_fc4s(host)[7] = 1;
1036
1037 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1038 BFA_SYMNAME_MAXLEN);
1039 sprintf(fc_host_symbolic_name(host), "%s", symname);
1040
1041 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1042 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1043 }
1044
1045 static void
1046 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1047 {
1048 struct fc_rport_identifiers rport_ids;
1049 struct fc_rport *fc_rport;
1050 struct bfad_itnim_data_s *itnim_data;
1051
1052 rport_ids.node_name =
1053 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1054 rport_ids.port_name =
1055 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1056 rport_ids.port_id =
1057 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1058 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1059
1060 itnim->fc_rport = fc_rport =
1061 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1062
1063 if (!fc_rport)
1064 return;
1065
1066 fc_rport->maxframe_size =
1067 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1068 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1069
1070 itnim_data = fc_rport->dd_data;
1071 itnim_data->itnim = itnim;
1072
1073 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1074
1075 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1076 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1077
1078 if ((fc_rport->scsi_target_id != -1)
1079 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1080 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1081
1082 itnim->channel = fc_rport->channel;
1083
1084 return;
1085 }
1086
1087 /*
1088 * Work queue handler using FC transport service
1089 * Context: kernel
1090 */
1091 static void
1092 bfad_im_itnim_work_handler(struct work_struct *work)
1093 {
1094 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1095 itnim_work);
1096 struct bfad_im_s *im = itnim->im;
1097 struct bfad_s *bfad = im->bfad;
1098 struct bfad_im_port_s *im_port;
1099 unsigned long flags;
1100 struct fc_rport *fc_rport;
1101 wwn_t wwpn;
1102 u32 fcid;
1103 char wwpn_str[32], fcid_str[16];
1104
1105 spin_lock_irqsave(&bfad->bfad_lock, flags);
1106 im_port = itnim->im_port;
1107 bfa_trc(bfad, itnim->state);
1108 switch (itnim->state) {
1109 case ITNIM_STATE_ONLINE:
1110 if (!itnim->fc_rport) {
1111 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1112 bfad_im_fc_rport_add(im_port, itnim);
1113 spin_lock_irqsave(&bfad->bfad_lock, flags);
1114 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1115 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1116 wwn2str(wwpn_str, wwpn);
1117 fcid2str(fcid_str, fcid);
1118 list_add_tail(&itnim->list_entry,
1119 &im_port->itnim_mapped_list);
1120 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1121 "ITNIM ONLINE Target: %d:0:%d "
1122 "FCID: %s WWPN: %s\n",
1123 im_port->shost->host_no,
1124 itnim->scsi_tgt_id,
1125 fcid_str, wwpn_str);
1126 } else {
1127 printk(KERN_WARNING
1128 "%s: itnim %llx is already in online state\n",
1129 __func__,
1130 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1131 }
1132
1133 break;
1134 case ITNIM_STATE_OFFLINE_PENDING:
1135 itnim->state = ITNIM_STATE_OFFLINE;
1136 if (itnim->fc_rport) {
1137 fc_rport = itnim->fc_rport;
1138 ((struct bfad_itnim_data_s *)
1139 fc_rport->dd_data)->itnim = NULL;
1140 itnim->fc_rport = NULL;
1141 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1142 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1143 fc_rport->dev_loss_tmo =
1144 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1145 fc_remote_port_delete(fc_rport);
1146 spin_lock_irqsave(&bfad->bfad_lock, flags);
1147 }
1148 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1149 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1150 wwn2str(wwpn_str, wwpn);
1151 fcid2str(fcid_str, fcid);
1152 list_del(&itnim->list_entry);
1153 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1154 "ITNIM OFFLINE Target: %d:0:%d "
1155 "FCID: %s WWPN: %s\n",
1156 im_port->shost->host_no,
1157 itnim->scsi_tgt_id,
1158 fcid_str, wwpn_str);
1159 }
1160 break;
1161 case ITNIM_STATE_FREE:
1162 if (itnim->fc_rport) {
1163 fc_rport = itnim->fc_rport;
1164 ((struct bfad_itnim_data_s *)
1165 fc_rport->dd_data)->itnim = NULL;
1166 itnim->fc_rport = NULL;
1167 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1168 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1169 fc_rport->dev_loss_tmo =
1170 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1171 fc_remote_port_delete(fc_rport);
1172 spin_lock_irqsave(&bfad->bfad_lock, flags);
1173 }
1174 list_del(&itnim->list_entry);
1175 }
1176
1177 kfree(itnim);
1178 break;
1179 default:
1180 WARN_ON(1);
1181 break;
1182 }
1183
1184 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1185 }
1186
1187 /*
1188 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1189 */
1190 static int
1191 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1192 {
1193 struct bfad_im_port_s *im_port =
1194 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1195 struct bfad_s *bfad = im_port->bfad;
1196 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1197 struct bfad_itnim_s *itnim;
1198 struct bfa_ioim_s *hal_io;
1199 unsigned long flags;
1200 int rc;
1201 int sg_cnt = 0;
1202 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1203
1204 rc = fc_remote_port_chkready(rport);
1205 if (rc) {
1206 cmnd->result = rc;
1207 done(cmnd);
1208 return 0;
1209 }
1210
1211 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1212 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1213 cmnd->result = DID_NO_CONNECT << 16;
1214 else
1215 cmnd->result = DID_REQUEUE << 16;
1216 done(cmnd);
1217 return 0;
1218 }
1219
1220 sg_cnt = scsi_dma_map(cmnd);
1221 if (sg_cnt < 0)
1222 return SCSI_MLQUEUE_HOST_BUSY;
1223
1224 cmnd->scsi_done = done;
1225
1226 spin_lock_irqsave(&bfad->bfad_lock, flags);
1227 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1228 printk(KERN_WARNING
1229 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1230 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1231 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1232 goto out_fail_cmd;
1233 }
1234
1235
1236 itnim = itnim_data->itnim;
1237 if (!itnim) {
1238 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1239 goto out_fail_cmd;
1240 }
1241
1242 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1243 itnim->bfa_itnim, sg_cnt);
1244 if (!hal_io) {
1245 printk(KERN_WARNING "hal_io failure\n");
1246 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1247 scsi_dma_unmap(cmnd);
1248 return SCSI_MLQUEUE_HOST_BUSY;
1249 }
1250
1251 cmnd->host_scribble = (char *)hal_io;
1252 bfa_ioim_start(hal_io);
1253 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1254
1255 return 0;
1256
1257 out_fail_cmd:
1258 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1259 scsi_dma_unmap(cmnd);
1260 if (done)
1261 done(cmnd);
1262
1263 return 0;
1264 }
1265
1266 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1267
1268 void
1269 bfad_rport_online_wait(struct bfad_s *bfad)
1270 {
1271 int i;
1272 int rport_delay = 10;
1273
1274 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1275 && i < bfa_linkup_delay; i++) {
1276 set_current_state(TASK_UNINTERRUPTIBLE);
1277 schedule_timeout(HZ);
1278 }
1279
1280 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1281 rport_delay = rport_delay < bfa_linkup_delay ?
1282 rport_delay : bfa_linkup_delay;
1283 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1284 && i < rport_delay; i++) {
1285 set_current_state(TASK_UNINTERRUPTIBLE);
1286 schedule_timeout(HZ);
1287 }
1288
1289 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1290 set_current_state(TASK_UNINTERRUPTIBLE);
1291 schedule_timeout(rport_delay * HZ);
1292 }
1293 }
1294 }
1295
1296 int
1297 bfad_get_linkup_delay(struct bfad_s *bfad)
1298 {
1299 u8 nwwns = 0;
1300 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1301 int linkup_delay;
1302
1303 /*
1304 * Querying for the boot target port wwns
1305 * -- read from boot information in flash.
1306 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1307 * else => local boot machine set linkup_delay = 0
1308 */
1309
1310 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1311
1312 if (nwwns > 0)
1313 /* If Boot over SAN set linkup_delay = 30sec */
1314 linkup_delay = 30;
1315 else
1316 /* If local boot; no linkup_delay */
1317 linkup_delay = 0;
1318
1319 return linkup_delay;
1320 }
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