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[S390] Remove error checking from copy_oldmem_page()
[linux/fpc-iii.git] / drivers / scsi / bfa / bfad_im.c
blob01312381639f74415d1ebd2ca10c1752308fb922
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 "bfad_drv.h"
23 #include "bfad_im.h"
24 #include "bfa_fcs.h"
25
26 BFA_TRC_FILE(LDRV, IM);
27
28 DEFINE_IDR(bfad_im_port_index);
29 struct scsi_transport_template *bfad_im_scsi_transport_template;
30 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
31 static void bfad_im_itnim_work_handler(struct work_struct *work);
32 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
33 static int bfad_im_slave_alloc(struct scsi_device *sdev);
34 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
35 struct bfad_itnim_s *itnim);
36
37 void
38 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
39 enum bfi_ioim_status io_status, u8 scsi_status,
40 int sns_len, u8 *sns_info, s32 residue)
41 {
42 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
43 struct bfad_s *bfad = drv;
44 struct bfad_itnim_data_s *itnim_data;
45 struct bfad_itnim_s *itnim;
46 u8 host_status = DID_OK;
47
48 switch (io_status) {
49 case BFI_IOIM_STS_OK:
50 bfa_trc(bfad, scsi_status);
51 scsi_set_resid(cmnd, 0);
52
53 if (sns_len > 0) {
54 bfa_trc(bfad, sns_len);
55 if (sns_len > SCSI_SENSE_BUFFERSIZE)
56 sns_len = SCSI_SENSE_BUFFERSIZE;
57 memcpy(cmnd->sense_buffer, sns_info, sns_len);
58 }
59
60 if (residue > 0) {
61 bfa_trc(bfad, residue);
62 scsi_set_resid(cmnd, residue);
63 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
64 (scsi_bufflen(cmnd) - residue) <
65 cmnd->underflow) {
66 bfa_trc(bfad, 0);
67 host_status = DID_ERROR;
68 }
69 }
70 cmnd->result = ScsiResult(host_status, scsi_status);
71
72 break;
73
74 case BFI_IOIM_STS_ABORTED:
75 case BFI_IOIM_STS_TIMEDOUT:
76 case BFI_IOIM_STS_PATHTOV:
77 default:
78 host_status = DID_ERROR;
79 cmnd->result = ScsiResult(host_status, 0);
80 }
81
82 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
83 if (cmnd->device->host != NULL)
84 scsi_dma_unmap(cmnd);
85
86 cmnd->host_scribble = NULL;
87 bfa_trc(bfad, cmnd->result);
88
89 itnim_data = cmnd->device->hostdata;
90 if (itnim_data) {
91 itnim = itnim_data->itnim;
92 if (!cmnd->result && itnim &&
93 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
94 /* Queue depth adjustment for good status completion */
95 bfad_ramp_up_qdepth(itnim, cmnd->device);
96 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
97 /* qfull handling */
98 bfad_handle_qfull(itnim, cmnd->device);
99 }
100 }
101
102 cmnd->scsi_done(cmnd);
103 }
104
105 void
106 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
107 {
108 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
109 struct bfad_itnim_data_s *itnim_data;
110 struct bfad_itnim_s *itnim;
111
112 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
113
114 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
115 if (cmnd->device->host != NULL)
116 scsi_dma_unmap(cmnd);
117
118 cmnd->host_scribble = NULL;
119
120 /* Queue depth adjustment */
121 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
122 itnim_data = cmnd->device->hostdata;
123 if (itnim_data) {
124 itnim = itnim_data->itnim;
125 if (itnim)
126 bfad_ramp_up_qdepth(itnim, cmnd->device);
127 }
128 }
129
130 cmnd->scsi_done(cmnd);
131 }
132
133 void
134 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
135 {
136 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
137 struct bfad_s *bfad = drv;
138
139 cmnd->result = ScsiResult(DID_ERROR, 0);
140
141 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
142 if (cmnd->device->host != NULL)
143 scsi_dma_unmap(cmnd);
144
145 bfa_trc(bfad, cmnd->result);
146 cmnd->host_scribble = NULL;
147 }
148
149 void
150 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
151 enum bfi_tskim_status tsk_status)
152 {
153 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
154 wait_queue_head_t *wq;
155
156 cmnd->SCp.Status |= tsk_status << 1;
157 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
158 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
159 cmnd->SCp.ptr = NULL;
160
161 if (wq)
162 wake_up(wq);
163 }
164
165 /*
166 * Scsi_Host_template SCSI host template
167 */
168 /*
169 * Scsi_Host template entry, returns BFAD PCI info.
170 */
171 static const char *
172 bfad_im_info(struct Scsi_Host *shost)
173 {
174 static char bfa_buf[256];
175 struct bfad_im_port_s *im_port =
176 (struct bfad_im_port_s *) shost->hostdata[0];
177 struct bfad_s *bfad = im_port->bfad;
178
179 memset(bfa_buf, 0, sizeof(bfa_buf));
180 snprintf(bfa_buf, sizeof(bfa_buf),
181 "Brocade FC/FCOE Adapter, " "hwpath: %s driver: %s",
182 bfad->pci_name, BFAD_DRIVER_VERSION);
183
184 return bfa_buf;
185 }
186
187 /*
188 * Scsi_Host template entry, aborts the specified SCSI command.
189 *
190 * Returns: SUCCESS or FAILED.
191 */
192 static int
193 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
194 {
195 struct Scsi_Host *shost = cmnd->device->host;
196 struct bfad_im_port_s *im_port =
197 (struct bfad_im_port_s *) shost->hostdata[0];
198 struct bfad_s *bfad = im_port->bfad;
199 struct bfa_ioim_s *hal_io;
200 unsigned long flags;
201 u32 timeout;
202 int rc = FAILED;
203
204 spin_lock_irqsave(&bfad->bfad_lock, flags);
205 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
206 if (!hal_io) {
207 /* IO has been completed, retrun success */
208 rc = SUCCESS;
209 goto out;
210 }
211 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
212 rc = FAILED;
213 goto out;
214 }
215
216 bfa_trc(bfad, hal_io->iotag);
217 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
218 "scsi%d: abort cmnd %p iotag %x\n",
219 im_port->shost->host_no, cmnd, hal_io->iotag);
220 (void) bfa_ioim_abort(hal_io);
221 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
222
223 /* Need to wait until the command get aborted */
224 timeout = 10;
225 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
226 set_current_state(TASK_UNINTERRUPTIBLE);
227 schedule_timeout(timeout);
228 if (timeout < 4 * HZ)
229 timeout *= 2;
230 }
231
232 cmnd->scsi_done(cmnd);
233 bfa_trc(bfad, hal_io->iotag);
234 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
235 "scsi%d: complete abort 0x%p iotag 0x%x\n",
236 im_port->shost->host_no, cmnd, hal_io->iotag);
237 return SUCCESS;
238 out:
239 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
240 return rc;
241 }
242
243 static bfa_status_t
244 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
245 struct bfad_itnim_s *itnim)
246 {
247 struct bfa_tskim_s *tskim;
248 struct bfa_itnim_s *bfa_itnim;
249 bfa_status_t rc = BFA_STATUS_OK;
250 struct scsi_lun scsilun;
251
252 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
253 if (!tskim) {
254 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
255 "target reset, fail to allocate tskim\n");
256 rc = BFA_STATUS_FAILED;
257 goto out;
258 }
259
260 /*
261 * Set host_scribble to NULL to avoid aborting a task command if
262 * happens.
263 */
264 cmnd->host_scribble = NULL;
265 cmnd->SCp.Status = 0;
266 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
267 memset(&scsilun, 0, sizeof(scsilun));
268 bfa_tskim_start(tskim, bfa_itnim, scsilun,
269 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
270 out:
271 return rc;
272 }
273
274 /*
275 * Scsi_Host template entry, resets a LUN and abort its all commands.
276 *
277 * Returns: SUCCESS or FAILED.
278 *
279 */
280 static int
281 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
282 {
283 struct Scsi_Host *shost = cmnd->device->host;
284 struct bfad_im_port_s *im_port =
285 (struct bfad_im_port_s *) shost->hostdata[0];
286 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
287 struct bfad_s *bfad = im_port->bfad;
288 struct bfa_tskim_s *tskim;
289 struct bfad_itnim_s *itnim;
290 struct bfa_itnim_s *bfa_itnim;
291 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
292 int rc = SUCCESS;
293 unsigned long flags;
294 enum bfi_tskim_status task_status;
295 struct scsi_lun scsilun;
296
297 spin_lock_irqsave(&bfad->bfad_lock, flags);
298 itnim = itnim_data->itnim;
299 if (!itnim) {
300 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
301 rc = FAILED;
302 goto out;
303 }
304
305 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
306 if (!tskim) {
307 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
308 "LUN reset, fail to allocate tskim");
309 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
310 rc = FAILED;
311 goto out;
312 }
313
314 /*
315 * Set host_scribble to NULL to avoid aborting a task command
316 * if happens.
317 */
318 cmnd->host_scribble = NULL;
319 cmnd->SCp.ptr = (char *)&wq;
320 cmnd->SCp.Status = 0;
321 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
322 int_to_scsilun(cmnd->device->lun, &scsilun);
323 bfa_tskim_start(tskim, bfa_itnim, scsilun,
324 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
325 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
326
327 wait_event(wq, test_bit(IO_DONE_BIT,
328 (unsigned long *)&cmnd->SCp.Status));
329
330 task_status = cmnd->SCp.Status >> 1;
331 if (task_status != BFI_TSKIM_STS_OK) {
332 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
333 "LUN reset failure, status: %d\n", task_status);
334 rc = FAILED;
335 }
336
337 out:
338 return rc;
339 }
340
341 /*
342 * Scsi_Host template entry, resets the bus and abort all commands.
343 */
344 static int
345 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
346 {
347 struct Scsi_Host *shost = cmnd->device->host;
348 struct bfad_im_port_s *im_port =
349 (struct bfad_im_port_s *) shost->hostdata[0];
350 struct bfad_s *bfad = im_port->bfad;
351 struct bfad_itnim_s *itnim;
352 unsigned long flags;
353 u32 i, rc, err_cnt = 0;
354 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
355 enum bfi_tskim_status task_status;
356
357 spin_lock_irqsave(&bfad->bfad_lock, flags);
358 for (i = 0; i < MAX_FCP_TARGET; i++) {
359 itnim = bfad_get_itnim(im_port, i);
360 if (itnim) {
361 cmnd->SCp.ptr = (char *)&wq;
362 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
363 if (rc != BFA_STATUS_OK) {
364 err_cnt++;
365 continue;
366 }
367
368 /* wait target reset to complete */
369 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
370 wait_event(wq, test_bit(IO_DONE_BIT,
371 (unsigned long *)&cmnd->SCp.Status));
372 spin_lock_irqsave(&bfad->bfad_lock, flags);
373
374 task_status = cmnd->SCp.Status >> 1;
375 if (task_status != BFI_TSKIM_STS_OK) {
376 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
377 "target reset failure,"
378 " status: %d\n", task_status);
379 err_cnt++;
380 }
381 }
382 }
383 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
384
385 if (err_cnt)
386 return FAILED;
387
388 return SUCCESS;
389 }
390
391 /*
392 * Scsi_Host template entry slave_destroy.
393 */
394 static void
395 bfad_im_slave_destroy(struct scsi_device *sdev)
396 {
397 sdev->hostdata = NULL;
398 return;
399 }
400
401 /*
402 * BFA FCS itnim callbacks
403 */
404
405 /*
406 * BFA FCS itnim alloc callback, after successful PRLI
407 * Context: Interrupt
408 */
409 void
410 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
411 struct bfad_itnim_s **itnim_drv)
412 {
413 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
414 if (*itnim_drv == NULL)
415 return;
416
417 (*itnim_drv)->im = bfad->im;
418 *itnim = &(*itnim_drv)->fcs_itnim;
419 (*itnim_drv)->state = ITNIM_STATE_NONE;
420
421 /*
422 * Initiaze the itnim_work
423 */
424 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
425 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
426 }
427
428 /*
429 * BFA FCS itnim free callback.
430 * Context: Interrupt. bfad_lock is held
431 */
432 void
433 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
434 {
435 struct bfad_port_s *port;
436 wwn_t wwpn;
437 u32 fcid;
438 char wwpn_str[32], fcid_str[16];
439 struct bfad_im_s *im = itnim_drv->im;
440
441 /* online to free state transtion should not happen */
442 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
443
444 itnim_drv->queue_work = 1;
445 /* offline request is not yet done, use the same request to free */
446 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
447 itnim_drv->queue_work = 0;
448
449 itnim_drv->state = ITNIM_STATE_FREE;
450 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
451 itnim_drv->im_port = port->im_port;
452 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
453 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
454 wwn2str(wwpn_str, wwpn);
455 fcid2str(fcid_str, fcid);
456 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
457 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
458 port->im_port->shost->host_no,
459 fcid_str, wwpn_str);
460
461 /* ITNIM processing */
462 if (itnim_drv->queue_work)
463 queue_work(im->drv_workq, &itnim_drv->itnim_work);
464 }
465
466 /*
467 * BFA FCS itnim online callback.
468 * Context: Interrupt. bfad_lock is held
469 */
470 void
471 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
472 {
473 struct bfad_port_s *port;
474 struct bfad_im_s *im = itnim_drv->im;
475
476 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
477 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
478 itnim_drv->state = ITNIM_STATE_ONLINE;
479 itnim_drv->queue_work = 1;
480 itnim_drv->im_port = port->im_port;
481
482 /* ITNIM processing */
483 if (itnim_drv->queue_work)
484 queue_work(im->drv_workq, &itnim_drv->itnim_work);
485 }
486
487 /*
488 * BFA FCS itnim offline callback.
489 * Context: Interrupt. bfad_lock is held
490 */
491 void
492 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
493 {
494 struct bfad_port_s *port;
495 struct bfad_s *bfad;
496 struct bfad_im_s *im = itnim_drv->im;
497
498 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
499 bfad = port->bfad;
500 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
501 (port->flags & BFAD_PORT_DELETE)) {
502 itnim_drv->state = ITNIM_STATE_OFFLINE;
503 return;
504 }
505 itnim_drv->im_port = port->im_port;
506 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
507 itnim_drv->queue_work = 1;
508
509 /* ITNIM processing */
510 if (itnim_drv->queue_work)
511 queue_work(im->drv_workq, &itnim_drv->itnim_work);
512 }
513
514 /*
515 * Allocate a Scsi_Host for a port.
516 */
517 int
518 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
519 struct device *dev)
520 {
521 int error = 1;
522
523 mutex_lock(&bfad_mutex);
524 if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
525 mutex_unlock(&bfad_mutex);
526 printk(KERN_WARNING "idr_pre_get failure\n");
527 goto out;
528 }
529
530 error = idr_get_new(&bfad_im_port_index, im_port,
531 &im_port->idr_id);
532 if (error) {
533 mutex_unlock(&bfad_mutex);
534 printk(KERN_WARNING "idr_get_new failure\n");
535 goto out;
536 }
537
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 bfa_status_t rc = BFA_STATUS_OK;
689
690 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
691 if (im == NULL) {
692 rc = BFA_STATUS_ENOMEM;
693 goto ext;
694 }
695
696 bfad->im = im;
697 im->bfad = bfad;
698
699 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
700 kfree(im);
701 rc = BFA_STATUS_FAILED;
702 }
703
704 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
705 ext:
706 return rc;
707 }
708
709 void
710 bfad_im_probe_undo(struct bfad_s *bfad)
711 {
712 if (bfad->im) {
713 bfad_destroy_workq(bfad->im);
714 kfree(bfad->im);
715 bfad->im = NULL;
716 }
717 }
718
719 struct Scsi_Host *
720 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
721 {
722 struct scsi_host_template *sht;
723
724 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
725 sht = &bfad_im_scsi_host_template;
726 else
727 sht = &bfad_im_vport_template;
728
729 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
730 sht->max_sectors = max_xfer_size << 1;
731
732 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
733
734 return scsi_host_alloc(sht, sizeof(unsigned long));
735 }
736
737 void
738 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
739 {
740 if (!(im_port->flags & BFAD_PORT_DELETE))
741 flush_workqueue(bfad->im->drv_workq);
742 bfad_im_scsi_host_free(im_port->bfad, im_port);
743 bfad_im_port_clean(im_port);
744 kfree(im_port);
745 }
746
747 void
748 bfad_destroy_workq(struct bfad_im_s *im)
749 {
750 if (im && im->drv_workq) {
751 flush_workqueue(im->drv_workq);
752 destroy_workqueue(im->drv_workq);
753 im->drv_workq = NULL;
754 }
755 }
756
757 bfa_status_t
758 bfad_thread_workq(struct bfad_s *bfad)
759 {
760 struct bfad_im_s *im = bfad->im;
761
762 bfa_trc(bfad, 0);
763 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
764 bfad->inst_no);
765 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
766 if (!im->drv_workq)
767 return BFA_STATUS_FAILED;
768
769 return BFA_STATUS_OK;
770 }
771
772 /*
773 * Scsi_Host template entry.
774 *
775 * Description:
776 * OS entry point to adjust the queue_depths on a per-device basis.
777 * Called once per device during the bus scan.
778 * Return non-zero if fails.
779 */
780 static int
781 bfad_im_slave_configure(struct scsi_device *sdev)
782 {
783 if (sdev->tagged_supported)
784 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
785 else
786 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
787
788 return 0;
789 }
790
791 struct scsi_host_template bfad_im_scsi_host_template = {
792 .module = THIS_MODULE,
793 .name = BFAD_DRIVER_NAME,
794 .info = bfad_im_info,
795 .queuecommand = bfad_im_queuecommand,
796 .eh_abort_handler = bfad_im_abort_handler,
797 .eh_device_reset_handler = bfad_im_reset_lun_handler,
798 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
799
800 .slave_alloc = bfad_im_slave_alloc,
801 .slave_configure = bfad_im_slave_configure,
802 .slave_destroy = bfad_im_slave_destroy,
803
804 .this_id = -1,
805 .sg_tablesize = BFAD_IO_MAX_SGE,
806 .cmd_per_lun = 3,
807 .use_clustering = ENABLE_CLUSTERING,
808 .shost_attrs = bfad_im_host_attrs,
809 .max_sectors = BFAD_MAX_SECTORS,
810 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
811 };
812
813 struct scsi_host_template bfad_im_vport_template = {
814 .module = THIS_MODULE,
815 .name = BFAD_DRIVER_NAME,
816 .info = bfad_im_info,
817 .queuecommand = bfad_im_queuecommand,
818 .eh_abort_handler = bfad_im_abort_handler,
819 .eh_device_reset_handler = bfad_im_reset_lun_handler,
820 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
821
822 .slave_alloc = bfad_im_slave_alloc,
823 .slave_configure = bfad_im_slave_configure,
824 .slave_destroy = bfad_im_slave_destroy,
825
826 .this_id = -1,
827 .sg_tablesize = BFAD_IO_MAX_SGE,
828 .cmd_per_lun = 3,
829 .use_clustering = ENABLE_CLUSTERING,
830 .shost_attrs = bfad_im_vport_attrs,
831 .max_sectors = BFAD_MAX_SECTORS,
832 };
833
834 bfa_status_t
835 bfad_im_module_init(void)
836 {
837 bfad_im_scsi_transport_template =
838 fc_attach_transport(&bfad_im_fc_function_template);
839 if (!bfad_im_scsi_transport_template)
840 return BFA_STATUS_ENOMEM;
841
842 bfad_im_scsi_vport_transport_template =
843 fc_attach_transport(&bfad_im_vport_fc_function_template);
844 if (!bfad_im_scsi_vport_transport_template) {
845 fc_release_transport(bfad_im_scsi_transport_template);
846 return BFA_STATUS_ENOMEM;
847 }
848
849 return BFA_STATUS_OK;
850 }
851
852 void
853 bfad_im_module_exit(void)
854 {
855 if (bfad_im_scsi_transport_template)
856 fc_release_transport(bfad_im_scsi_transport_template);
857
858 if (bfad_im_scsi_vport_transport_template)
859 fc_release_transport(bfad_im_scsi_vport_transport_template);
860 }
861
862 void
863 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
864 {
865 struct scsi_device *tmp_sdev;
866
867 if (((jiffies - itnim->last_ramp_up_time) >
868 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
869 ((jiffies - itnim->last_queue_full_time) >
870 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
871 shost_for_each_device(tmp_sdev, sdev->host) {
872 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
873 if (tmp_sdev->id != sdev->id)
874 continue;
875 if (tmp_sdev->ordered_tags)
876 scsi_adjust_queue_depth(tmp_sdev,
877 MSG_ORDERED_TAG,
878 tmp_sdev->queue_depth + 1);
879 else
880 scsi_adjust_queue_depth(tmp_sdev,
881 MSG_SIMPLE_TAG,
882 tmp_sdev->queue_depth + 1);
883
884 itnim->last_ramp_up_time = jiffies;
885 }
886 }
887 }
888 }
889
890 void
891 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
892 {
893 struct scsi_device *tmp_sdev;
894
895 itnim->last_queue_full_time = jiffies;
896
897 shost_for_each_device(tmp_sdev, sdev->host) {
898 if (tmp_sdev->id != sdev->id)
899 continue;
900 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
901 }
902 }
903
904 struct bfad_itnim_s *
905 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
906 {
907 struct bfad_itnim_s *itnim = NULL;
908
909 /* Search the mapped list for this target ID */
910 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
911 if (id == itnim->scsi_tgt_id)
912 return itnim;
913 }
914
915 return NULL;
916 }
917
918 /*
919 * Scsi_Host template entry slave_alloc
920 */
921 static int
922 bfad_im_slave_alloc(struct scsi_device *sdev)
923 {
924 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
925
926 if (!rport || fc_remote_port_chkready(rport))
927 return -ENXIO;
928
929 sdev->hostdata = rport->dd_data;
930
931 return 0;
932 }
933
934 static u32
935 bfad_im_supported_speeds(struct bfa_s *bfa)
936 {
937 struct bfa_ioc_attr_s *ioc_attr;
938 u32 supported_speed = 0;
939
940 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
941 if (!ioc_attr)
942 return 0;
943
944 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
945 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
946 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
947 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
948 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
949 if (ioc_attr->adapter_attr.is_mezz) {
950 supported_speed |= FC_PORTSPEED_8GBIT |
951 FC_PORTSPEED_4GBIT |
952 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
953 } else {
954 supported_speed |= FC_PORTSPEED_8GBIT |
955 FC_PORTSPEED_4GBIT |
956 FC_PORTSPEED_2GBIT;
957 }
958 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
959 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
960 FC_PORTSPEED_1GBIT;
961 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
962 supported_speed |= FC_PORTSPEED_10GBIT;
963 }
964 kfree(ioc_attr);
965 return supported_speed;
966 }
967
968 void
969 bfad_fc_host_init(struct bfad_im_port_s *im_port)
970 {
971 struct Scsi_Host *host = im_port->shost;
972 struct bfad_s *bfad = im_port->bfad;
973 struct bfad_port_s *port = im_port->port;
974 char symname[BFA_SYMNAME_MAXLEN];
975 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
976
977 fc_host_node_name(host) =
978 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
979 fc_host_port_name(host) =
980 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
981 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
982
983 fc_host_supported_classes(host) = FC_COS_CLASS3;
984
985 memset(fc_host_supported_fc4s(host), 0,
986 sizeof(fc_host_supported_fc4s(host)));
987 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
988 /* For FCP type 0x08 */
989 fc_host_supported_fc4s(host)[2] = 1;
990 /* For fibre channel services type 0x20 */
991 fc_host_supported_fc4s(host)[7] = 1;
992
993 strncpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
994 BFA_SYMNAME_MAXLEN);
995 sprintf(fc_host_symbolic_name(host), "%s", symname);
996
997 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
998 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
999 }
1000
1001 static void
1002 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1003 {
1004 struct fc_rport_identifiers rport_ids;
1005 struct fc_rport *fc_rport;
1006 struct bfad_itnim_data_s *itnim_data;
1007
1008 rport_ids.node_name =
1009 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1010 rport_ids.port_name =
1011 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1012 rport_ids.port_id =
1013 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1014 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1015
1016 itnim->fc_rport = fc_rport =
1017 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1018
1019 if (!fc_rport)
1020 return;
1021
1022 fc_rport->maxframe_size =
1023 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1024 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1025
1026 itnim_data = fc_rport->dd_data;
1027 itnim_data->itnim = itnim;
1028
1029 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1030
1031 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1032 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1033
1034 if ((fc_rport->scsi_target_id != -1)
1035 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1036 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1037
1038 return;
1039 }
1040
1041 /*
1042 * Work queue handler using FC transport service
1043 * Context: kernel
1044 */
1045 static void
1046 bfad_im_itnim_work_handler(struct work_struct *work)
1047 {
1048 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1049 itnim_work);
1050 struct bfad_im_s *im = itnim->im;
1051 struct bfad_s *bfad = im->bfad;
1052 struct bfad_im_port_s *im_port;
1053 unsigned long flags;
1054 struct fc_rport *fc_rport;
1055 wwn_t wwpn;
1056 u32 fcid;
1057 char wwpn_str[32], fcid_str[16];
1058
1059 spin_lock_irqsave(&bfad->bfad_lock, flags);
1060 im_port = itnim->im_port;
1061 bfa_trc(bfad, itnim->state);
1062 switch (itnim->state) {
1063 case ITNIM_STATE_ONLINE:
1064 if (!itnim->fc_rport) {
1065 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1066 bfad_im_fc_rport_add(im_port, itnim);
1067 spin_lock_irqsave(&bfad->bfad_lock, flags);
1068 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1069 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1070 wwn2str(wwpn_str, wwpn);
1071 fcid2str(fcid_str, fcid);
1072 list_add_tail(&itnim->list_entry,
1073 &im_port->itnim_mapped_list);
1074 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1075 "ITNIM ONLINE Target: %d:0:%d "
1076 "FCID: %s WWPN: %s\n",
1077 im_port->shost->host_no,
1078 itnim->scsi_tgt_id,
1079 fcid_str, wwpn_str);
1080 } else {
1081 printk(KERN_WARNING
1082 "%s: itnim %llx is already in online state\n",
1083 __func__,
1084 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1085 }
1086
1087 break;
1088 case ITNIM_STATE_OFFLINE_PENDING:
1089 itnim->state = ITNIM_STATE_OFFLINE;
1090 if (itnim->fc_rport) {
1091 fc_rport = itnim->fc_rport;
1092 ((struct bfad_itnim_data_s *)
1093 fc_rport->dd_data)->itnim = NULL;
1094 itnim->fc_rport = NULL;
1095 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1096 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1097 fc_rport->dev_loss_tmo =
1098 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1099 fc_remote_port_delete(fc_rport);
1100 spin_lock_irqsave(&bfad->bfad_lock, flags);
1101 }
1102 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1103 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1104 wwn2str(wwpn_str, wwpn);
1105 fcid2str(fcid_str, fcid);
1106 list_del(&itnim->list_entry);
1107 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1108 "ITNIM OFFLINE Target: %d:0:%d "
1109 "FCID: %s WWPN: %s\n",
1110 im_port->shost->host_no,
1111 itnim->scsi_tgt_id,
1112 fcid_str, wwpn_str);
1113 }
1114 break;
1115 case ITNIM_STATE_FREE:
1116 if (itnim->fc_rport) {
1117 fc_rport = itnim->fc_rport;
1118 ((struct bfad_itnim_data_s *)
1119 fc_rport->dd_data)->itnim = NULL;
1120 itnim->fc_rport = NULL;
1121 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1122 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1123 fc_rport->dev_loss_tmo =
1124 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1125 fc_remote_port_delete(fc_rport);
1126 spin_lock_irqsave(&bfad->bfad_lock, flags);
1127 }
1128 list_del(&itnim->list_entry);
1129 }
1130
1131 kfree(itnim);
1132 break;
1133 default:
1134 WARN_ON(1);
1135 break;
1136 }
1137
1138 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1139 }
1140
1141 /*
1142 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1143 */
1144 static int
1145 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1146 {
1147 struct bfad_im_port_s *im_port =
1148 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1149 struct bfad_s *bfad = im_port->bfad;
1150 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1151 struct bfad_itnim_s *itnim;
1152 struct bfa_ioim_s *hal_io;
1153 unsigned long flags;
1154 int rc;
1155 int sg_cnt = 0;
1156 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1157
1158 rc = fc_remote_port_chkready(rport);
1159 if (rc) {
1160 cmnd->result = rc;
1161 done(cmnd);
1162 return 0;
1163 }
1164
1165 sg_cnt = scsi_dma_map(cmnd);
1166 if (sg_cnt < 0)
1167 return SCSI_MLQUEUE_HOST_BUSY;
1168
1169 cmnd->scsi_done = done;
1170
1171 spin_lock_irqsave(&bfad->bfad_lock, flags);
1172 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1173 printk(KERN_WARNING
1174 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1175 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1176 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1177 goto out_fail_cmd;
1178 }
1179
1180
1181 itnim = itnim_data->itnim;
1182 if (!itnim) {
1183 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1184 goto out_fail_cmd;
1185 }
1186
1187 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1188 itnim->bfa_itnim, sg_cnt);
1189 if (!hal_io) {
1190 printk(KERN_WARNING "hal_io failure\n");
1191 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1192 scsi_dma_unmap(cmnd);
1193 return SCSI_MLQUEUE_HOST_BUSY;
1194 }
1195
1196 cmnd->host_scribble = (char *)hal_io;
1197 bfa_ioim_start(hal_io);
1198 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1199
1200 return 0;
1201
1202 out_fail_cmd:
1203 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1204 scsi_dma_unmap(cmnd);
1205 if (done)
1206 done(cmnd);
1207
1208 return 0;
1209 }
1210
1211 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1212
1213 void
1214 bfad_rport_online_wait(struct bfad_s *bfad)
1215 {
1216 int i;
1217 int rport_delay = 10;
1218
1219 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1220 && i < bfa_linkup_delay; i++) {
1221 set_current_state(TASK_UNINTERRUPTIBLE);
1222 schedule_timeout(HZ);
1223 }
1224
1225 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1226 rport_delay = rport_delay < bfa_linkup_delay ?
1227 rport_delay : bfa_linkup_delay;
1228 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1229 && i < rport_delay; i++) {
1230 set_current_state(TASK_UNINTERRUPTIBLE);
1231 schedule_timeout(HZ);
1232 }
1233
1234 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1235 set_current_state(TASK_UNINTERRUPTIBLE);
1236 schedule_timeout(rport_delay * HZ);
1237 }
1238 }
1239 }
1240
1241 int
1242 bfad_get_linkup_delay(struct bfad_s *bfad)
1243 {
1244 u8 nwwns = 0;
1245 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1246 int linkup_delay;
1247
1248 /*
1249 * Querying for the boot target port wwns
1250 * -- read from boot information in flash.
1251 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1252 * else => local boot machine set linkup_delay = 0
1253 */
1254
1255 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1256
1257 if (nwwns > 0)
1258 /* If Boot over SAN set linkup_delay = 30sec */
1259 linkup_delay = 30;
1260 else
1261 /* If local boot; no linkup_delay */
1262 linkup_delay = 0;
1263
1264 return linkup_delay;
1265 }
Linux with added FPC-III support