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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / scsi / bfa / bfad_im.c
blob22f06be2606f56f174b5720701d098d8cf1b7429
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
4 * Copyright (c) 2014- QLogic Corporation.
5 * All rights reserved
6 * www.qlogic.com
7 *
8 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
9 */
10
11 /*
12 * bfad_im.c Linux driver IM module.
13 */
14
15 #include <linux/export.h>
16
17 #include "bfad_drv.h"
18 #include "bfad_im.h"
19 #include "bfa_fcs.h"
20
21 BFA_TRC_FILE(LDRV, IM);
22
23 DEFINE_IDR(bfad_im_port_index);
24 struct scsi_transport_template *bfad_im_scsi_transport_template;
25 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
26 static void bfad_im_itnim_work_handler(struct work_struct *work);
27 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
28 static int bfad_im_slave_alloc(struct scsi_device *sdev);
29 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
30 struct bfad_itnim_s *itnim);
31
32 void
33 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
34 enum bfi_ioim_status io_status, u8 scsi_status,
35 int sns_len, u8 *sns_info, s32 residue)
36 {
37 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
38 struct bfad_s *bfad = drv;
39 struct bfad_itnim_data_s *itnim_data;
40 struct bfad_itnim_s *itnim;
41 u8 host_status = DID_OK;
42
43 switch (io_status) {
44 case BFI_IOIM_STS_OK:
45 bfa_trc(bfad, scsi_status);
46 scsi_set_resid(cmnd, 0);
47
48 if (sns_len > 0) {
49 bfa_trc(bfad, sns_len);
50 if (sns_len > SCSI_SENSE_BUFFERSIZE)
51 sns_len = SCSI_SENSE_BUFFERSIZE;
52 memcpy(cmnd->sense_buffer, sns_info, sns_len);
53 }
54
55 if (residue > 0) {
56 bfa_trc(bfad, residue);
57 scsi_set_resid(cmnd, residue);
58 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
59 (scsi_bufflen(cmnd) - residue) <
60 cmnd->underflow) {
61 bfa_trc(bfad, 0);
62 host_status = DID_ERROR;
63 }
64 }
65 cmnd->result = host_status << 16 | scsi_status;
66
67 break;
68
69 case BFI_IOIM_STS_TIMEDOUT:
70 cmnd->result = DID_TIME_OUT << 16;
71 break;
72 case BFI_IOIM_STS_PATHTOV:
73 cmnd->result = DID_TRANSPORT_DISRUPTED << 16;
74 break;
75 default:
76 cmnd->result = DID_ERROR << 16;
77 }
78
79 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
80 if (cmnd->device->host != NULL)
81 scsi_dma_unmap(cmnd);
82
83 cmnd->host_scribble = NULL;
84 bfa_trc(bfad, cmnd->result);
85
86 itnim_data = cmnd->device->hostdata;
87 if (itnim_data) {
88 itnim = itnim_data->itnim;
89 if (!cmnd->result && itnim &&
90 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
91 /* Queue depth adjustment for good status completion */
92 bfad_ramp_up_qdepth(itnim, cmnd->device);
93 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
94 /* qfull handling */
95 bfad_handle_qfull(itnim, cmnd->device);
96 }
97 }
98
99 cmnd->scsi_done(cmnd);
100 }
101
102 void
103 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
104 {
105 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
106 struct bfad_itnim_data_s *itnim_data;
107 struct bfad_itnim_s *itnim;
108
109 cmnd->result = DID_OK << 16 | SCSI_STATUS_GOOD;
110
111 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
112 if (cmnd->device->host != NULL)
113 scsi_dma_unmap(cmnd);
114
115 cmnd->host_scribble = NULL;
116
117 /* Queue depth adjustment */
118 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
119 itnim_data = cmnd->device->hostdata;
120 if (itnim_data) {
121 itnim = itnim_data->itnim;
122 if (itnim)
123 bfad_ramp_up_qdepth(itnim, cmnd->device);
124 }
125 }
126
127 cmnd->scsi_done(cmnd);
128 }
129
130 void
131 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
132 {
133 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
134 struct bfad_s *bfad = drv;
135
136 cmnd->result = DID_ERROR << 16;
137
138 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
139 if (cmnd->device->host != NULL)
140 scsi_dma_unmap(cmnd);
141
142 bfa_trc(bfad, cmnd->result);
143 cmnd->host_scribble = NULL;
144 }
145
146 void
147 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
148 enum bfi_tskim_status tsk_status)
149 {
150 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
151 wait_queue_head_t *wq;
152
153 cmnd->SCp.Status |= tsk_status << 1;
154 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
155 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
156 cmnd->SCp.ptr = NULL;
157
158 if (wq)
159 wake_up(wq);
160 }
161
162 /*
163 * Scsi_Host_template SCSI host template
164 */
165 /*
166 * Scsi_Host template entry, returns BFAD PCI info.
167 */
168 static const char *
169 bfad_im_info(struct Scsi_Host *shost)
170 {
171 static char bfa_buf[256];
172 struct bfad_im_port_s *im_port =
173 (struct bfad_im_port_s *) shost->hostdata[0];
174 struct bfad_s *bfad = im_port->bfad;
175
176 memset(bfa_buf, 0, sizeof(bfa_buf));
177 snprintf(bfa_buf, sizeof(bfa_buf),
178 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",
179 bfad->pci_name, BFAD_DRIVER_VERSION);
180
181 return bfa_buf;
182 }
183
184 /*
185 * Scsi_Host template entry, aborts the specified SCSI command.
186 *
187 * Returns: SUCCESS or FAILED.
188 */
189 static int
190 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
191 {
192 struct Scsi_Host *shost = cmnd->device->host;
193 struct bfad_im_port_s *im_port =
194 (struct bfad_im_port_s *) shost->hostdata[0];
195 struct bfad_s *bfad = im_port->bfad;
196 struct bfa_ioim_s *hal_io;
197 unsigned long flags;
198 u32 timeout;
199 int rc = FAILED;
200
201 spin_lock_irqsave(&bfad->bfad_lock, flags);
202 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
203 if (!hal_io) {
204 /* IO has been completed, return success */
205 rc = SUCCESS;
206 goto out;
207 }
208 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
209 rc = FAILED;
210 goto out;
211 }
212
213 bfa_trc(bfad, hal_io->iotag);
214 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
215 "scsi%d: abort cmnd %p iotag %x\n",
216 im_port->shost->host_no, cmnd, hal_io->iotag);
217 (void) bfa_ioim_abort(hal_io);
218 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
219
220 /* Need to wait until the command get aborted */
221 timeout = 10;
222 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
223 set_current_state(TASK_UNINTERRUPTIBLE);
224 schedule_timeout(timeout);
225 if (timeout < 4 * HZ)
226 timeout *= 2;
227 }
228
229 cmnd->scsi_done(cmnd);
230 bfa_trc(bfad, hal_io->iotag);
231 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
232 "scsi%d: complete abort 0x%p iotag 0x%x\n",
233 im_port->shost->host_no, cmnd, hal_io->iotag);
234 return SUCCESS;
235 out:
236 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
237 return rc;
238 }
239
240 static bfa_status_t
241 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
242 struct bfad_itnim_s *itnim)
243 {
244 struct bfa_tskim_s *tskim;
245 struct bfa_itnim_s *bfa_itnim;
246 bfa_status_t rc = BFA_STATUS_OK;
247 struct scsi_lun scsilun;
248
249 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
250 if (!tskim) {
251 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
252 "target reset, fail to allocate tskim\n");
253 rc = BFA_STATUS_FAILED;
254 goto out;
255 }
256
257 /*
258 * Set host_scribble to NULL to avoid aborting a task command if
259 * happens.
260 */
261 cmnd->host_scribble = NULL;
262 cmnd->SCp.Status = 0;
263 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
264 /*
265 * bfa_itnim can be NULL if the port gets disconnected and the bfa
266 * and fcs layers have cleaned up their nexus with the targets and
267 * the same has not been cleaned up by the shim
268 */
269 if (bfa_itnim == NULL) {
270 bfa_tskim_free(tskim);
271 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
272 "target reset, bfa_itnim is NULL\n");
273 rc = BFA_STATUS_FAILED;
274 goto out;
275 }
276
277 memset(&scsilun, 0, sizeof(scsilun));
278 bfa_tskim_start(tskim, bfa_itnim, scsilun,
279 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
280 out:
281 return rc;
282 }
283
284 /*
285 * Scsi_Host template entry, resets a LUN and abort its all commands.
286 *
287 * Returns: SUCCESS or FAILED.
288 *
289 */
290 static int
291 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
292 {
293 struct Scsi_Host *shost = cmnd->device->host;
294 struct bfad_im_port_s *im_port =
295 (struct bfad_im_port_s *) shost->hostdata[0];
296 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
297 struct bfad_s *bfad = im_port->bfad;
298 struct bfa_tskim_s *tskim;
299 struct bfad_itnim_s *itnim;
300 struct bfa_itnim_s *bfa_itnim;
301 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
302 int rc = SUCCESS;
303 unsigned long flags;
304 enum bfi_tskim_status task_status;
305 struct scsi_lun scsilun;
306
307 spin_lock_irqsave(&bfad->bfad_lock, flags);
308 itnim = itnim_data->itnim;
309 if (!itnim) {
310 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
311 rc = FAILED;
312 goto out;
313 }
314
315 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
316 if (!tskim) {
317 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
318 "LUN reset, fail to allocate tskim");
319 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
320 rc = FAILED;
321 goto out;
322 }
323
324 /*
325 * Set host_scribble to NULL to avoid aborting a task command
326 * if happens.
327 */
328 cmnd->host_scribble = NULL;
329 cmnd->SCp.ptr = (char *)&wq;
330 cmnd->SCp.Status = 0;
331 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
332 /*
333 * bfa_itnim can be NULL if the port gets disconnected and the bfa
334 * and fcs layers have cleaned up their nexus with the targets and
335 * the same has not been cleaned up by the shim
336 */
337 if (bfa_itnim == NULL) {
338 bfa_tskim_free(tskim);
339 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
340 "lun reset, bfa_itnim is NULL\n");
341 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
342 rc = FAILED;
343 goto out;
344 }
345 int_to_scsilun(cmnd->device->lun, &scsilun);
346 bfa_tskim_start(tskim, bfa_itnim, scsilun,
347 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
348 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
349
350 wait_event(wq, test_bit(IO_DONE_BIT,
351 (unsigned long *)&cmnd->SCp.Status));
352
353 task_status = cmnd->SCp.Status >> 1;
354 if (task_status != BFI_TSKIM_STS_OK) {
355 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
356 "LUN reset failure, status: %d\n", task_status);
357 rc = FAILED;
358 }
359
360 out:
361 return rc;
362 }
363
364 /*
365 * Scsi_Host template entry, resets the target and abort all commands.
366 */
367 static int
368 bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
369 {
370 struct Scsi_Host *shost = cmnd->device->host;
371 struct scsi_target *starget = scsi_target(cmnd->device);
372 struct bfad_im_port_s *im_port =
373 (struct bfad_im_port_s *) shost->hostdata[0];
374 struct bfad_s *bfad = im_port->bfad;
375 struct bfad_itnim_s *itnim;
376 unsigned long flags;
377 u32 rc, rtn = FAILED;
378 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
379 enum bfi_tskim_status task_status;
380
381 spin_lock_irqsave(&bfad->bfad_lock, flags);
382 itnim = bfad_get_itnim(im_port, starget->id);
383 if (itnim) {
384 cmnd->SCp.ptr = (char *)&wq;
385 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
386 if (rc == BFA_STATUS_OK) {
387 /* wait target reset to complete */
388 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
389 wait_event(wq, test_bit(IO_DONE_BIT,
390 (unsigned long *)&cmnd->SCp.Status));
391 spin_lock_irqsave(&bfad->bfad_lock, flags);
392
393 task_status = cmnd->SCp.Status >> 1;
394 if (task_status != BFI_TSKIM_STS_OK)
395 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
396 "target reset failure,"
397 " status: %d\n", task_status);
398 else
399 rtn = SUCCESS;
400 }
401 }
402 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
403
404 return rtn;
405 }
406
407 /*
408 * Scsi_Host template entry slave_destroy.
409 */
410 static void
411 bfad_im_slave_destroy(struct scsi_device *sdev)
412 {
413 sdev->hostdata = NULL;
414 return;
415 }
416
417 /*
418 * BFA FCS itnim callbacks
419 */
420
421 /*
422 * BFA FCS itnim alloc callback, after successful PRLI
423 * Context: Interrupt
424 */
425 int
426 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
427 struct bfad_itnim_s **itnim_drv)
428 {
429 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
430 if (*itnim_drv == NULL)
431 return -ENOMEM;
432
433 (*itnim_drv)->im = bfad->im;
434 *itnim = &(*itnim_drv)->fcs_itnim;
435 (*itnim_drv)->state = ITNIM_STATE_NONE;
436
437 /*
438 * Initiaze the itnim_work
439 */
440 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
441 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
442 return 0;
443 }
444
445 /*
446 * BFA FCS itnim free callback.
447 * Context: Interrupt. bfad_lock is held
448 */
449 void
450 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
451 {
452 struct bfad_port_s *port;
453 wwn_t wwpn;
454 u32 fcid;
455 char wwpn_str[32], fcid_str[16];
456 struct bfad_im_s *im = itnim_drv->im;
457
458 /* online to free state transtion should not happen */
459 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
460
461 itnim_drv->queue_work = 1;
462 /* offline request is not yet done, use the same request to free */
463 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
464 itnim_drv->queue_work = 0;
465
466 itnim_drv->state = ITNIM_STATE_FREE;
467 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
468 itnim_drv->im_port = port->im_port;
469 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
470 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
471 wwn2str(wwpn_str, wwpn);
472 fcid2str(fcid_str, fcid);
473 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
474 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
475 port->im_port->shost->host_no,
476 fcid_str, wwpn_str);
477
478 /* ITNIM processing */
479 if (itnim_drv->queue_work)
480 queue_work(im->drv_workq, &itnim_drv->itnim_work);
481 }
482
483 /*
484 * BFA FCS itnim online callback.
485 * Context: Interrupt. bfad_lock is held
486 */
487 void
488 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
489 {
490 struct bfad_port_s *port;
491 struct bfad_im_s *im = itnim_drv->im;
492
493 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
494 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
495 itnim_drv->state = ITNIM_STATE_ONLINE;
496 itnim_drv->queue_work = 1;
497 itnim_drv->im_port = port->im_port;
498
499 /* ITNIM processing */
500 if (itnim_drv->queue_work)
501 queue_work(im->drv_workq, &itnim_drv->itnim_work);
502 }
503
504 /*
505 * BFA FCS itnim offline callback.
506 * Context: Interrupt. bfad_lock is held
507 */
508 void
509 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
510 {
511 struct bfad_port_s *port;
512 struct bfad_s *bfad;
513 struct bfad_im_s *im = itnim_drv->im;
514
515 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
516 bfad = port->bfad;
517 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
518 (port->flags & BFAD_PORT_DELETE)) {
519 itnim_drv->state = ITNIM_STATE_OFFLINE;
520 return;
521 }
522 itnim_drv->im_port = port->im_port;
523 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
524 itnim_drv->queue_work = 1;
525
526 /* ITNIM processing */
527 if (itnim_drv->queue_work)
528 queue_work(im->drv_workq, &itnim_drv->itnim_work);
529 }
530
531 /*
532 * Allocate a Scsi_Host for a port.
533 */
534 int
535 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
536 struct device *dev)
537 {
538 struct bfad_im_port_pointer *im_portp;
539 int error;
540
541 mutex_lock(&bfad_mutex);
542 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
543 if (error < 0) {
544 mutex_unlock(&bfad_mutex);
545 printk(KERN_WARNING "idr_alloc failure\n");
546 goto out;
547 }
548 im_port->idr_id = error;
549 mutex_unlock(&bfad_mutex);
550
551 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
552 if (!im_port->shost) {
553 error = 1;
554 goto out_free_idr;
555 }
556
557 im_portp = shost_priv(im_port->shost);
558 im_portp->p = im_port;
559 im_port->shost->unique_id = im_port->idr_id;
560 im_port->shost->this_id = -1;
561 im_port->shost->max_id = MAX_FCP_TARGET;
562 im_port->shost->max_lun = MAX_FCP_LUN;
563 im_port->shost->max_cmd_len = 16;
564 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
565 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
566 im_port->shost->transportt = bfad_im_scsi_transport_template;
567 else
568 im_port->shost->transportt =
569 bfad_im_scsi_vport_transport_template;
570
571 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
572 if (error) {
573 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
574 goto out_fc_rel;
575 }
576
577 return 0;
578
579 out_fc_rel:
580 scsi_host_put(im_port->shost);
581 im_port->shost = NULL;
582 out_free_idr:
583 mutex_lock(&bfad_mutex);
584 idr_remove(&bfad_im_port_index, im_port->idr_id);
585 mutex_unlock(&bfad_mutex);
586 out:
587 return error;
588 }
589
590 void
591 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
592 {
593 bfa_trc(bfad, bfad->inst_no);
594 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
595 im_port->shost->host_no);
596
597 fc_remove_host(im_port->shost);
598
599 scsi_remove_host(im_port->shost);
600 scsi_host_put(im_port->shost);
601
602 mutex_lock(&bfad_mutex);
603 idr_remove(&bfad_im_port_index, im_port->idr_id);
604 mutex_unlock(&bfad_mutex);
605 }
606
607 static void
608 bfad_im_port_delete_handler(struct work_struct *work)
609 {
610 struct bfad_im_port_s *im_port =
611 container_of(work, struct bfad_im_port_s, port_delete_work);
612
613 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
614 im_port->flags |= BFAD_PORT_DELETE;
615 fc_vport_terminate(im_port->fc_vport);
616 }
617 }
618
619 bfa_status_t
620 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
621 {
622 int rc = BFA_STATUS_OK;
623 struct bfad_im_port_s *im_port;
624
625 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
626 if (im_port == NULL) {
627 rc = BFA_STATUS_ENOMEM;
628 goto ext;
629 }
630 port->im_port = im_port;
631 im_port->port = port;
632 im_port->bfad = bfad;
633
634 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
635 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
636 INIT_LIST_HEAD(&im_port->binding_list);
637
638 ext:
639 return rc;
640 }
641
642 void
643 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
644 {
645 struct bfad_im_port_s *im_port = port->im_port;
646
647 queue_work(bfad->im->drv_workq,
648 &im_port->port_delete_work);
649 }
650
651 void
652 bfad_im_port_clean(struct bfad_im_port_s *im_port)
653 {
654 struct bfad_fcp_binding *bp, *bp_new;
655 unsigned long flags;
656 struct bfad_s *bfad = im_port->bfad;
657
658 spin_lock_irqsave(&bfad->bfad_lock, flags);
659 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
660 list_entry) {
661 list_del(&bp->list_entry);
662 kfree(bp);
663 }
664
665 /* the itnim_mapped_list must be empty at this time */
666 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
667
668 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
669 }
670
671 static void bfad_aen_im_notify_handler(struct work_struct *work)
672 {
673 struct bfad_im_s *im =
674 container_of(work, struct bfad_im_s, aen_im_notify_work);
675 struct bfa_aen_entry_s *aen_entry;
676 struct bfad_s *bfad = im->bfad;
677 struct Scsi_Host *shost = bfad->pport.im_port->shost;
678 void *event_data;
679 unsigned long flags;
680
681 while (!list_empty(&bfad->active_aen_q)) {
682 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
683 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
684 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
685 event_data = (char *)aen_entry + sizeof(struct list_head);
686 fc_host_post_vendor_event(shost, fc_get_event_number(),
687 sizeof(struct bfa_aen_entry_s) -
688 sizeof(struct list_head),
689 (char *)event_data, BFAD_NL_VENDOR_ID);
690 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
691 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
692 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
693 }
694 }
695
696 bfa_status_t
697 bfad_im_probe(struct bfad_s *bfad)
698 {
699 struct bfad_im_s *im;
700
701 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
702 if (im == NULL)
703 return BFA_STATUS_ENOMEM;
704
705 bfad->im = im;
706 im->bfad = bfad;
707
708 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
709 kfree(im);
710 return BFA_STATUS_FAILED;
711 }
712
713 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
714 return BFA_STATUS_OK;
715 }
716
717 void
718 bfad_im_probe_undo(struct bfad_s *bfad)
719 {
720 if (bfad->im) {
721 bfad_destroy_workq(bfad->im);
722 kfree(bfad->im);
723 bfad->im = NULL;
724 }
725 }
726
727 struct Scsi_Host *
728 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
729 {
730 struct scsi_host_template *sht;
731
732 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
733 sht = &bfad_im_scsi_host_template;
734 else
735 sht = &bfad_im_vport_template;
736
737 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
738 sht->max_sectors = max_xfer_size << 1;
739
740 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
741
742 return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));
743 }
744
745 void
746 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
747 {
748 if (!(im_port->flags & BFAD_PORT_DELETE))
749 flush_workqueue(bfad->im->drv_workq);
750 bfad_im_scsi_host_free(im_port->bfad, im_port);
751 bfad_im_port_clean(im_port);
752 kfree(im_port);
753 }
754
755 void
756 bfad_destroy_workq(struct bfad_im_s *im)
757 {
758 if (im && im->drv_workq) {
759 flush_workqueue(im->drv_workq);
760 destroy_workqueue(im->drv_workq);
761 im->drv_workq = NULL;
762 }
763 }
764
765 bfa_status_t
766 bfad_thread_workq(struct bfad_s *bfad)
767 {
768 struct bfad_im_s *im = bfad->im;
769
770 bfa_trc(bfad, 0);
771 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
772 bfad->inst_no);
773 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
774 if (!im->drv_workq)
775 return BFA_STATUS_FAILED;
776
777 return BFA_STATUS_OK;
778 }
779
780 /*
781 * Scsi_Host template entry.
782 *
783 * Description:
784 * OS entry point to adjust the queue_depths on a per-device basis.
785 * Called once per device during the bus scan.
786 * Return non-zero if fails.
787 */
788 static int
789 bfad_im_slave_configure(struct scsi_device *sdev)
790 {
791 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
792 return 0;
793 }
794
795 struct scsi_host_template bfad_im_scsi_host_template = {
796 .module = THIS_MODULE,
797 .name = BFAD_DRIVER_NAME,
798 .info = bfad_im_info,
799 .queuecommand = bfad_im_queuecommand,
800 .eh_timed_out = fc_eh_timed_out,
801 .eh_abort_handler = bfad_im_abort_handler,
802 .eh_device_reset_handler = bfad_im_reset_lun_handler,
803 .eh_target_reset_handler = bfad_im_reset_target_handler,
804
805 .slave_alloc = bfad_im_slave_alloc,
806 .slave_configure = bfad_im_slave_configure,
807 .slave_destroy = bfad_im_slave_destroy,
808
809 .this_id = -1,
810 .sg_tablesize = BFAD_IO_MAX_SGE,
811 .cmd_per_lun = 3,
812 .shost_attrs = bfad_im_host_attrs,
813 .max_sectors = BFAD_MAX_SECTORS,
814 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
815 };
816
817 struct scsi_host_template bfad_im_vport_template = {
818 .module = THIS_MODULE,
819 .name = BFAD_DRIVER_NAME,
820 .info = bfad_im_info,
821 .queuecommand = bfad_im_queuecommand,
822 .eh_timed_out = fc_eh_timed_out,
823 .eh_abort_handler = bfad_im_abort_handler,
824 .eh_device_reset_handler = bfad_im_reset_lun_handler,
825 .eh_target_reset_handler = bfad_im_reset_target_handler,
826
827 .slave_alloc = bfad_im_slave_alloc,
828 .slave_configure = bfad_im_slave_configure,
829 .slave_destroy = bfad_im_slave_destroy,
830
831 .this_id = -1,
832 .sg_tablesize = BFAD_IO_MAX_SGE,
833 .cmd_per_lun = 3,
834 .shost_attrs = bfad_im_vport_attrs,
835 .max_sectors = BFAD_MAX_SECTORS,
836 };
837
838 bfa_status_t
839 bfad_im_module_init(void)
840 {
841 bfad_im_scsi_transport_template =
842 fc_attach_transport(&bfad_im_fc_function_template);
843 if (!bfad_im_scsi_transport_template)
844 return BFA_STATUS_ENOMEM;
845
846 bfad_im_scsi_vport_transport_template =
847 fc_attach_transport(&bfad_im_vport_fc_function_template);
848 if (!bfad_im_scsi_vport_transport_template) {
849 fc_release_transport(bfad_im_scsi_transport_template);
850 return BFA_STATUS_ENOMEM;
851 }
852
853 return BFA_STATUS_OK;
854 }
855
856 void
857 bfad_im_module_exit(void)
858 {
859 if (bfad_im_scsi_transport_template)
860 fc_release_transport(bfad_im_scsi_transport_template);
861
862 if (bfad_im_scsi_vport_transport_template)
863 fc_release_transport(bfad_im_scsi_vport_transport_template);
864
865 idr_destroy(&bfad_im_port_index);
866 }
867
868 void
869 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
870 {
871 struct scsi_device *tmp_sdev;
872
873 if (((jiffies - itnim->last_ramp_up_time) >
874 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
875 ((jiffies - itnim->last_queue_full_time) >
876 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
877 shost_for_each_device(tmp_sdev, sdev->host) {
878 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
879 if (tmp_sdev->id != sdev->id)
880 continue;
881 scsi_change_queue_depth(tmp_sdev,
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 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
920 * Has the logic to query the LUN Mask database to check if this LUN needs to
921 * be made visible to the SCSI mid-layer or not.
922 *
923 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
924 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
925 */
926 static int
927 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
928 struct fc_rport *rport)
929 {
930 struct bfad_itnim_data_s *itnim_data =
931 (struct bfad_itnim_data_s *) rport->dd_data;
932 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
933 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
934 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
935 int i = 0, ret = -ENXIO;
936
937 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
938 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
939 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
940 lun_list[i].rp_tag == bfa_rport->rport_tag &&
941 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
942 ret = BFA_STATUS_OK;
943 break;
944 }
945 }
946 return ret;
947 }
948
949 /*
950 * Scsi_Host template entry slave_alloc
951 */
952 static int
953 bfad_im_slave_alloc(struct scsi_device *sdev)
954 {
955 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
956 struct bfad_itnim_data_s *itnim_data;
957 struct bfa_s *bfa;
958
959 if (!rport || fc_remote_port_chkready(rport))
960 return -ENXIO;
961
962 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
963 bfa = itnim_data->itnim->bfa_itnim->bfa;
964
965 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
966 /*
967 * We should not mask LUN 0 - since this will translate
968 * to no LUN / TARGET for SCSI ml resulting no scan.
969 */
970 if (sdev->lun == 0) {
971 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
972 BLIST_SPARSELUN;
973 goto done;
974 }
975
976 /*
977 * Query LUN Mask configuration - to expose this LUN
978 * to the SCSI mid-layer or to mask it.
979 */
980 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
981 BFA_STATUS_OK)
982 return -ENXIO;
983 }
984 done:
985 sdev->hostdata = rport->dd_data;
986
987 return 0;
988 }
989
990 u32
991 bfad_im_supported_speeds(struct bfa_s *bfa)
992 {
993 struct bfa_ioc_attr_s *ioc_attr;
994 u32 supported_speed = 0;
995
996 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
997 if (!ioc_attr)
998 return 0;
999
1000 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1001 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1002 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1003 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1004 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1005 if (ioc_attr->adapter_attr.is_mezz) {
1006 supported_speed |= FC_PORTSPEED_8GBIT |
1007 FC_PORTSPEED_4GBIT |
1008 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1009 } else {
1010 supported_speed |= FC_PORTSPEED_8GBIT |
1011 FC_PORTSPEED_4GBIT |
1012 FC_PORTSPEED_2GBIT;
1013 }
1014 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1015 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1016 FC_PORTSPEED_1GBIT;
1017 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1018 supported_speed |= FC_PORTSPEED_10GBIT;
1019 }
1020 kfree(ioc_attr);
1021 return supported_speed;
1022 }
1023
1024 void
1025 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1026 {
1027 struct Scsi_Host *host = im_port->shost;
1028 struct bfad_s *bfad = im_port->bfad;
1029 struct bfad_port_s *port = im_port->port;
1030 char symname[BFA_SYMNAME_MAXLEN];
1031 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1032
1033 fc_host_node_name(host) =
1034 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1035 fc_host_port_name(host) =
1036 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1037 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1038
1039 fc_host_supported_classes(host) = FC_COS_CLASS3;
1040
1041 memset(fc_host_supported_fc4s(host), 0,
1042 sizeof(fc_host_supported_fc4s(host)));
1043 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1044 /* For FCP type 0x08 */
1045 fc_host_supported_fc4s(host)[2] = 1;
1046 /* For fibre channel services type 0x20 */
1047 fc_host_supported_fc4s(host)[7] = 1;
1048
1049 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1050 BFA_SYMNAME_MAXLEN);
1051 sprintf(fc_host_symbolic_name(host), "%s", symname);
1052
1053 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1054 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1055 }
1056
1057 static void
1058 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1059 {
1060 struct fc_rport_identifiers rport_ids;
1061 struct fc_rport *fc_rport;
1062 struct bfad_itnim_data_s *itnim_data;
1063
1064 rport_ids.node_name =
1065 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1066 rport_ids.port_name =
1067 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1068 rport_ids.port_id =
1069 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1070 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1071
1072 itnim->fc_rport = fc_rport =
1073 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1074
1075 if (!fc_rport)
1076 return;
1077
1078 fc_rport->maxframe_size =
1079 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1080 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1081
1082 itnim_data = fc_rport->dd_data;
1083 itnim_data->itnim = itnim;
1084
1085 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1086
1087 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1088 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1089
1090 if ((fc_rport->scsi_target_id != -1)
1091 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1092 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1093
1094 itnim->channel = fc_rport->channel;
1095
1096 return;
1097 }
1098
1099 /*
1100 * Work queue handler using FC transport service
1101 * Context: kernel
1102 */
1103 static void
1104 bfad_im_itnim_work_handler(struct work_struct *work)
1105 {
1106 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1107 itnim_work);
1108 struct bfad_im_s *im = itnim->im;
1109 struct bfad_s *bfad = im->bfad;
1110 struct bfad_im_port_s *im_port;
1111 unsigned long flags;
1112 struct fc_rport *fc_rport;
1113 wwn_t wwpn;
1114 u32 fcid;
1115 char wwpn_str[32], fcid_str[16];
1116
1117 spin_lock_irqsave(&bfad->bfad_lock, flags);
1118 im_port = itnim->im_port;
1119 bfa_trc(bfad, itnim->state);
1120 switch (itnim->state) {
1121 case ITNIM_STATE_ONLINE:
1122 if (!itnim->fc_rport) {
1123 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1124 bfad_im_fc_rport_add(im_port, itnim);
1125 spin_lock_irqsave(&bfad->bfad_lock, flags);
1126 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1127 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1128 wwn2str(wwpn_str, wwpn);
1129 fcid2str(fcid_str, fcid);
1130 list_add_tail(&itnim->list_entry,
1131 &im_port->itnim_mapped_list);
1132 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1133 "ITNIM ONLINE Target: %d:0:%d "
1134 "FCID: %s WWPN: %s\n",
1135 im_port->shost->host_no,
1136 itnim->scsi_tgt_id,
1137 fcid_str, wwpn_str);
1138 } else {
1139 printk(KERN_WARNING
1140 "%s: itnim %llx is already in online state\n",
1141 __func__,
1142 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1143 }
1144
1145 break;
1146 case ITNIM_STATE_OFFLINE_PENDING:
1147 itnim->state = ITNIM_STATE_OFFLINE;
1148 if (itnim->fc_rport) {
1149 fc_rport = itnim->fc_rport;
1150 ((struct bfad_itnim_data_s *)
1151 fc_rport->dd_data)->itnim = NULL;
1152 itnim->fc_rport = NULL;
1153 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1154 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1155 fc_rport->dev_loss_tmo =
1156 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1157 fc_remote_port_delete(fc_rport);
1158 spin_lock_irqsave(&bfad->bfad_lock, flags);
1159 }
1160 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1161 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1162 wwn2str(wwpn_str, wwpn);
1163 fcid2str(fcid_str, fcid);
1164 list_del(&itnim->list_entry);
1165 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1166 "ITNIM OFFLINE Target: %d:0:%d "
1167 "FCID: %s WWPN: %s\n",
1168 im_port->shost->host_no,
1169 itnim->scsi_tgt_id,
1170 fcid_str, wwpn_str);
1171 }
1172 break;
1173 case ITNIM_STATE_FREE:
1174 if (itnim->fc_rport) {
1175 fc_rport = itnim->fc_rport;
1176 ((struct bfad_itnim_data_s *)
1177 fc_rport->dd_data)->itnim = NULL;
1178 itnim->fc_rport = NULL;
1179 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1180 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1181 fc_rport->dev_loss_tmo =
1182 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1183 fc_remote_port_delete(fc_rport);
1184 spin_lock_irqsave(&bfad->bfad_lock, flags);
1185 }
1186 list_del(&itnim->list_entry);
1187 }
1188
1189 kfree(itnim);
1190 break;
1191 default:
1192 WARN_ON(1);
1193 break;
1194 }
1195
1196 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1197 }
1198
1199 /*
1200 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1201 */
1202 static int
1203 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1204 {
1205 struct bfad_im_port_s *im_port =
1206 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1207 struct bfad_s *bfad = im_port->bfad;
1208 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1209 struct bfad_itnim_s *itnim;
1210 struct bfa_ioim_s *hal_io;
1211 unsigned long flags;
1212 int rc;
1213 int sg_cnt = 0;
1214 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1215
1216 rc = fc_remote_port_chkready(rport);
1217 if (rc) {
1218 cmnd->result = rc;
1219 done(cmnd);
1220 return 0;
1221 }
1222
1223 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1224 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1225 cmnd->result = DID_NO_CONNECT << 16;
1226 else
1227 cmnd->result = DID_REQUEUE << 16;
1228 done(cmnd);
1229 return 0;
1230 }
1231
1232 sg_cnt = scsi_dma_map(cmnd);
1233 if (sg_cnt < 0)
1234 return SCSI_MLQUEUE_HOST_BUSY;
1235
1236 cmnd->scsi_done = done;
1237
1238 spin_lock_irqsave(&bfad->bfad_lock, flags);
1239 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1240 printk(KERN_WARNING
1241 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1242 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1243 cmnd->result = DID_NO_CONNECT << 16;
1244 goto out_fail_cmd;
1245 }
1246
1247
1248 itnim = itnim_data->itnim;
1249 if (!itnim) {
1250 cmnd->result = DID_IMM_RETRY << 16;
1251 goto out_fail_cmd;
1252 }
1253
1254 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1255 itnim->bfa_itnim, sg_cnt);
1256 if (!hal_io) {
1257 printk(KERN_WARNING "hal_io failure\n");
1258 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1259 scsi_dma_unmap(cmnd);
1260 return SCSI_MLQUEUE_HOST_BUSY;
1261 }
1262
1263 cmnd->host_scribble = (char *)hal_io;
1264 bfa_ioim_start(hal_io);
1265 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1266
1267 return 0;
1268
1269 out_fail_cmd:
1270 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1271 scsi_dma_unmap(cmnd);
1272 if (done)
1273 done(cmnd);
1274
1275 return 0;
1276 }
1277
1278 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1279
1280 void
1281 bfad_rport_online_wait(struct bfad_s *bfad)
1282 {
1283 int i;
1284 int rport_delay = 10;
1285
1286 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1287 && i < bfa_linkup_delay; i++) {
1288 set_current_state(TASK_UNINTERRUPTIBLE);
1289 schedule_timeout(HZ);
1290 }
1291
1292 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1293 rport_delay = rport_delay < bfa_linkup_delay ?
1294 rport_delay : bfa_linkup_delay;
1295 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1296 && i < rport_delay; i++) {
1297 set_current_state(TASK_UNINTERRUPTIBLE);
1298 schedule_timeout(HZ);
1299 }
1300
1301 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1302 set_current_state(TASK_UNINTERRUPTIBLE);
1303 schedule_timeout(rport_delay * HZ);
1304 }
1305 }
1306 }
1307
1308 int
1309 bfad_get_linkup_delay(struct bfad_s *bfad)
1310 {
1311 u8 nwwns = 0;
1312 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1313 int linkup_delay;
1314
1315 /*
1316 * Querying for the boot target port wwns
1317 * -- read from boot information in flash.
1318 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1319 * else => local boot machine set linkup_delay = 0
1320 */
1321
1322 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1323
1324 if (nwwns > 0)
1325 /* If Boot over SAN set linkup_delay = 30sec */
1326 linkup_delay = 30;
1327 else
1328 /* If local boot; no linkup_delay */
1329 linkup_delay = 0;
1330
1331 return linkup_delay;
1332 }
Linux with added FPC-III support