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Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[cris-mirror.git] / drivers / scsi / bfa / bfad_im.c
blobc05d6e91e4bde9cde7e9146ad48bae69727d476f
1 /*
2 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
3 * Copyright (c) 2014- QLogic Corporation.
4 * All rights reserved
5 * www.qlogic.com
6 *
7 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License (GPL) Version 2 as
11 * published by the Free Software Foundation
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 */
18
19 /*
20 * bfad_im.c Linux driver IM module.
21 */
22
23 #include <linux/export.h>
24
25 #include "bfad_drv.h"
26 #include "bfad_im.h"
27 #include "bfa_fcs.h"
28
29 BFA_TRC_FILE(LDRV, IM);
30
31 DEFINE_IDR(bfad_im_port_index);
32 struct scsi_transport_template *bfad_im_scsi_transport_template;
33 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
34 static void bfad_im_itnim_work_handler(struct work_struct *work);
35 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
36 static int bfad_im_slave_alloc(struct scsi_device *sdev);
37 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
38 struct bfad_itnim_s *itnim);
39
40 void
41 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
42 enum bfi_ioim_status io_status, u8 scsi_status,
43 int sns_len, u8 *sns_info, s32 residue)
44 {
45 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
46 struct bfad_s *bfad = drv;
47 struct bfad_itnim_data_s *itnim_data;
48 struct bfad_itnim_s *itnim;
49 u8 host_status = DID_OK;
50
51 switch (io_status) {
52 case BFI_IOIM_STS_OK:
53 bfa_trc(bfad, scsi_status);
54 scsi_set_resid(cmnd, 0);
55
56 if (sns_len > 0) {
57 bfa_trc(bfad, sns_len);
58 if (sns_len > SCSI_SENSE_BUFFERSIZE)
59 sns_len = SCSI_SENSE_BUFFERSIZE;
60 memcpy(cmnd->sense_buffer, sns_info, sns_len);
61 }
62
63 if (residue > 0) {
64 bfa_trc(bfad, residue);
65 scsi_set_resid(cmnd, residue);
66 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
67 (scsi_bufflen(cmnd) - residue) <
68 cmnd->underflow) {
69 bfa_trc(bfad, 0);
70 host_status = DID_ERROR;
71 }
72 }
73 cmnd->result = ScsiResult(host_status, scsi_status);
74
75 break;
76
77 case BFI_IOIM_STS_TIMEDOUT:
78 host_status = DID_TIME_OUT;
79 cmnd->result = ScsiResult(host_status, 0);
80 break;
81 case BFI_IOIM_STS_PATHTOV:
82 host_status = DID_TRANSPORT_DISRUPTED;
83 cmnd->result = ScsiResult(host_status, 0);
84 break;
85 default:
86 host_status = DID_ERROR;
87 cmnd->result = ScsiResult(host_status, 0);
88 }
89
90 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
91 if (cmnd->device->host != NULL)
92 scsi_dma_unmap(cmnd);
93
94 cmnd->host_scribble = NULL;
95 bfa_trc(bfad, cmnd->result);
96
97 itnim_data = cmnd->device->hostdata;
98 if (itnim_data) {
99 itnim = itnim_data->itnim;
100 if (!cmnd->result && itnim &&
101 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
102 /* Queue depth adjustment for good status completion */
103 bfad_ramp_up_qdepth(itnim, cmnd->device);
104 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
105 /* qfull handling */
106 bfad_handle_qfull(itnim, cmnd->device);
107 }
108 }
109
110 cmnd->scsi_done(cmnd);
111 }
112
113 void
114 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
115 {
116 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
117 struct bfad_itnim_data_s *itnim_data;
118 struct bfad_itnim_s *itnim;
119
120 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
121
122 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
123 if (cmnd->device->host != NULL)
124 scsi_dma_unmap(cmnd);
125
126 cmnd->host_scribble = NULL;
127
128 /* Queue depth adjustment */
129 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
130 itnim_data = cmnd->device->hostdata;
131 if (itnim_data) {
132 itnim = itnim_data->itnim;
133 if (itnim)
134 bfad_ramp_up_qdepth(itnim, cmnd->device);
135 }
136 }
137
138 cmnd->scsi_done(cmnd);
139 }
140
141 void
142 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
143 {
144 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
145 struct bfad_s *bfad = drv;
146
147 cmnd->result = ScsiResult(DID_ERROR, 0);
148
149 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
150 if (cmnd->device->host != NULL)
151 scsi_dma_unmap(cmnd);
152
153 bfa_trc(bfad, cmnd->result);
154 cmnd->host_scribble = NULL;
155 }
156
157 void
158 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
159 enum bfi_tskim_status tsk_status)
160 {
161 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
162 wait_queue_head_t *wq;
163
164 cmnd->SCp.Status |= tsk_status << 1;
165 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
166 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
167 cmnd->SCp.ptr = NULL;
168
169 if (wq)
170 wake_up(wq);
171 }
172
173 /*
174 * Scsi_Host_template SCSI host template
175 */
176 /*
177 * Scsi_Host template entry, returns BFAD PCI info.
178 */
179 static const char *
180 bfad_im_info(struct Scsi_Host *shost)
181 {
182 static char bfa_buf[256];
183 struct bfad_im_port_s *im_port =
184 (struct bfad_im_port_s *) shost->hostdata[0];
185 struct bfad_s *bfad = im_port->bfad;
186
187 memset(bfa_buf, 0, sizeof(bfa_buf));
188 snprintf(bfa_buf, sizeof(bfa_buf),
189 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",
190 bfad->pci_name, BFAD_DRIVER_VERSION);
191
192 return bfa_buf;
193 }
194
195 /*
196 * Scsi_Host template entry, aborts the specified SCSI command.
197 *
198 * Returns: SUCCESS or FAILED.
199 */
200 static int
201 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
202 {
203 struct Scsi_Host *shost = cmnd->device->host;
204 struct bfad_im_port_s *im_port =
205 (struct bfad_im_port_s *) shost->hostdata[0];
206 struct bfad_s *bfad = im_port->bfad;
207 struct bfa_ioim_s *hal_io;
208 unsigned long flags;
209 u32 timeout;
210 int rc = FAILED;
211
212 spin_lock_irqsave(&bfad->bfad_lock, flags);
213 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
214 if (!hal_io) {
215 /* IO has been completed, return success */
216 rc = SUCCESS;
217 goto out;
218 }
219 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
220 rc = FAILED;
221 goto out;
222 }
223
224 bfa_trc(bfad, hal_io->iotag);
225 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
226 "scsi%d: abort cmnd %p iotag %x\n",
227 im_port->shost->host_no, cmnd, hal_io->iotag);
228 (void) bfa_ioim_abort(hal_io);
229 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
230
231 /* Need to wait until the command get aborted */
232 timeout = 10;
233 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
234 set_current_state(TASK_UNINTERRUPTIBLE);
235 schedule_timeout(timeout);
236 if (timeout < 4 * HZ)
237 timeout *= 2;
238 }
239
240 cmnd->scsi_done(cmnd);
241 bfa_trc(bfad, hal_io->iotag);
242 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
243 "scsi%d: complete abort 0x%p iotag 0x%x\n",
244 im_port->shost->host_no, cmnd, hal_io->iotag);
245 return SUCCESS;
246 out:
247 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
248 return rc;
249 }
250
251 static bfa_status_t
252 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
253 struct bfad_itnim_s *itnim)
254 {
255 struct bfa_tskim_s *tskim;
256 struct bfa_itnim_s *bfa_itnim;
257 bfa_status_t rc = BFA_STATUS_OK;
258 struct scsi_lun scsilun;
259
260 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
261 if (!tskim) {
262 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
263 "target reset, fail to allocate tskim\n");
264 rc = BFA_STATUS_FAILED;
265 goto out;
266 }
267
268 /*
269 * Set host_scribble to NULL to avoid aborting a task command if
270 * happens.
271 */
272 cmnd->host_scribble = NULL;
273 cmnd->SCp.Status = 0;
274 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
275 /*
276 * bfa_itnim can be NULL if the port gets disconnected and the bfa
277 * and fcs layers have cleaned up their nexus with the targets and
278 * the same has not been cleaned up by the shim
279 */
280 if (bfa_itnim == NULL) {
281 bfa_tskim_free(tskim);
282 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
283 "target reset, bfa_itnim is NULL\n");
284 rc = BFA_STATUS_FAILED;
285 goto out;
286 }
287
288 memset(&scsilun, 0, sizeof(scsilun));
289 bfa_tskim_start(tskim, bfa_itnim, scsilun,
290 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
291 out:
292 return rc;
293 }
294
295 /*
296 * Scsi_Host template entry, resets a LUN and abort its all commands.
297 *
298 * Returns: SUCCESS or FAILED.
299 *
300 */
301 static int
302 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
303 {
304 struct Scsi_Host *shost = cmnd->device->host;
305 struct bfad_im_port_s *im_port =
306 (struct bfad_im_port_s *) shost->hostdata[0];
307 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
308 struct bfad_s *bfad = im_port->bfad;
309 struct bfa_tskim_s *tskim;
310 struct bfad_itnim_s *itnim;
311 struct bfa_itnim_s *bfa_itnim;
312 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
313 int rc = SUCCESS;
314 unsigned long flags;
315 enum bfi_tskim_status task_status;
316 struct scsi_lun scsilun;
317
318 spin_lock_irqsave(&bfad->bfad_lock, flags);
319 itnim = itnim_data->itnim;
320 if (!itnim) {
321 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
322 rc = FAILED;
323 goto out;
324 }
325
326 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
327 if (!tskim) {
328 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
329 "LUN reset, fail to allocate tskim");
330 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
331 rc = FAILED;
332 goto out;
333 }
334
335 /*
336 * Set host_scribble to NULL to avoid aborting a task command
337 * if happens.
338 */
339 cmnd->host_scribble = NULL;
340 cmnd->SCp.ptr = (char *)&wq;
341 cmnd->SCp.Status = 0;
342 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
343 /*
344 * bfa_itnim can be NULL if the port gets disconnected and the bfa
345 * and fcs layers have cleaned up their nexus with the targets and
346 * the same has not been cleaned up by the shim
347 */
348 if (bfa_itnim == NULL) {
349 bfa_tskim_free(tskim);
350 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
351 "lun reset, bfa_itnim is NULL\n");
352 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
353 rc = FAILED;
354 goto out;
355 }
356 int_to_scsilun(cmnd->device->lun, &scsilun);
357 bfa_tskim_start(tskim, bfa_itnim, scsilun,
358 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
359 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
360
361 wait_event(wq, test_bit(IO_DONE_BIT,
362 (unsigned long *)&cmnd->SCp.Status));
363
364 task_status = cmnd->SCp.Status >> 1;
365 if (task_status != BFI_TSKIM_STS_OK) {
366 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
367 "LUN reset failure, status: %d\n", task_status);
368 rc = FAILED;
369 }
370
371 out:
372 return rc;
373 }
374
375 /*
376 * Scsi_Host template entry, resets the target and abort all commands.
377 */
378 static int
379 bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
380 {
381 struct Scsi_Host *shost = cmnd->device->host;
382 struct scsi_target *starget = scsi_target(cmnd->device);
383 struct bfad_im_port_s *im_port =
384 (struct bfad_im_port_s *) shost->hostdata[0];
385 struct bfad_s *bfad = im_port->bfad;
386 struct bfad_itnim_s *itnim;
387 unsigned long flags;
388 u32 rc, rtn = FAILED;
389 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
390 enum bfi_tskim_status task_status;
391
392 spin_lock_irqsave(&bfad->bfad_lock, flags);
393 itnim = bfad_get_itnim(im_port, starget->id);
394 if (itnim) {
395 cmnd->SCp.ptr = (char *)&wq;
396 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
397 if (rc == BFA_STATUS_OK) {
398 /* wait target reset to complete */
399 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
400 wait_event(wq, test_bit(IO_DONE_BIT,
401 (unsigned long *)&cmnd->SCp.Status));
402 spin_lock_irqsave(&bfad->bfad_lock, flags);
403
404 task_status = cmnd->SCp.Status >> 1;
405 if (task_status != BFI_TSKIM_STS_OK)
406 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
407 "target reset failure,"
408 " status: %d\n", task_status);
409 else
410 rtn = SUCCESS;
411 }
412 }
413 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
414
415 return rtn;
416 }
417
418 /*
419 * Scsi_Host template entry slave_destroy.
420 */
421 static void
422 bfad_im_slave_destroy(struct scsi_device *sdev)
423 {
424 sdev->hostdata = NULL;
425 return;
426 }
427
428 /*
429 * BFA FCS itnim callbacks
430 */
431
432 /*
433 * BFA FCS itnim alloc callback, after successful PRLI
434 * Context: Interrupt
435 */
436 int
437 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
438 struct bfad_itnim_s **itnim_drv)
439 {
440 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
441 if (*itnim_drv == NULL)
442 return -ENOMEM;
443
444 (*itnim_drv)->im = bfad->im;
445 *itnim = &(*itnim_drv)->fcs_itnim;
446 (*itnim_drv)->state = ITNIM_STATE_NONE;
447
448 /*
449 * Initiaze the itnim_work
450 */
451 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
452 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
453 return 0;
454 }
455
456 /*
457 * BFA FCS itnim free callback.
458 * Context: Interrupt. bfad_lock is held
459 */
460 void
461 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
462 {
463 struct bfad_port_s *port;
464 wwn_t wwpn;
465 u32 fcid;
466 char wwpn_str[32], fcid_str[16];
467 struct bfad_im_s *im = itnim_drv->im;
468
469 /* online to free state transtion should not happen */
470 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
471
472 itnim_drv->queue_work = 1;
473 /* offline request is not yet done, use the same request to free */
474 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
475 itnim_drv->queue_work = 0;
476
477 itnim_drv->state = ITNIM_STATE_FREE;
478 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
479 itnim_drv->im_port = port->im_port;
480 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
481 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
482 wwn2str(wwpn_str, wwpn);
483 fcid2str(fcid_str, fcid);
484 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
485 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
486 port->im_port->shost->host_no,
487 fcid_str, wwpn_str);
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 online callback.
496 * Context: Interrupt. bfad_lock is held
497 */
498 void
499 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
500 {
501 struct bfad_port_s *port;
502 struct bfad_im_s *im = itnim_drv->im;
503
504 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
505 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
506 itnim_drv->state = ITNIM_STATE_ONLINE;
507 itnim_drv->queue_work = 1;
508 itnim_drv->im_port = port->im_port;
509
510 /* ITNIM processing */
511 if (itnim_drv->queue_work)
512 queue_work(im->drv_workq, &itnim_drv->itnim_work);
513 }
514
515 /*
516 * BFA FCS itnim offline callback.
517 * Context: Interrupt. bfad_lock is held
518 */
519 void
520 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
521 {
522 struct bfad_port_s *port;
523 struct bfad_s *bfad;
524 struct bfad_im_s *im = itnim_drv->im;
525
526 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
527 bfad = port->bfad;
528 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
529 (port->flags & BFAD_PORT_DELETE)) {
530 itnim_drv->state = ITNIM_STATE_OFFLINE;
531 return;
532 }
533 itnim_drv->im_port = port->im_port;
534 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
535 itnim_drv->queue_work = 1;
536
537 /* ITNIM processing */
538 if (itnim_drv->queue_work)
539 queue_work(im->drv_workq, &itnim_drv->itnim_work);
540 }
541
542 /*
543 * Allocate a Scsi_Host for a port.
544 */
545 int
546 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
547 struct device *dev)
548 {
549 struct bfad_im_port_pointer *im_portp;
550 int error = 1;
551
552 mutex_lock(&bfad_mutex);
553 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
554 if (error < 0) {
555 mutex_unlock(&bfad_mutex);
556 printk(KERN_WARNING "idr_alloc failure\n");
557 goto out;
558 }
559 im_port->idr_id = error;
560 mutex_unlock(&bfad_mutex);
561
562 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
563 if (!im_port->shost) {
564 error = 1;
565 goto out_free_idr;
566 }
567
568 im_portp = shost_priv(im_port->shost);
569 im_portp->p = im_port;
570 im_port->shost->unique_id = im_port->idr_id;
571 im_port->shost->this_id = -1;
572 im_port->shost->max_id = MAX_FCP_TARGET;
573 im_port->shost->max_lun = MAX_FCP_LUN;
574 im_port->shost->max_cmd_len = 16;
575 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
576 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
577 im_port->shost->transportt = bfad_im_scsi_transport_template;
578 else
579 im_port->shost->transportt =
580 bfad_im_scsi_vport_transport_template;
581
582 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
583 if (error) {
584 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
585 goto out_fc_rel;
586 }
587
588 return 0;
589
590 out_fc_rel:
591 scsi_host_put(im_port->shost);
592 im_port->shost = NULL;
593 out_free_idr:
594 mutex_lock(&bfad_mutex);
595 idr_remove(&bfad_im_port_index, im_port->idr_id);
596 mutex_unlock(&bfad_mutex);
597 out:
598 return error;
599 }
600
601 void
602 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
603 {
604 bfa_trc(bfad, bfad->inst_no);
605 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
606 im_port->shost->host_no);
607
608 fc_remove_host(im_port->shost);
609
610 scsi_remove_host(im_port->shost);
611 scsi_host_put(im_port->shost);
612
613 mutex_lock(&bfad_mutex);
614 idr_remove(&bfad_im_port_index, im_port->idr_id);
615 mutex_unlock(&bfad_mutex);
616 }
617
618 static void
619 bfad_im_port_delete_handler(struct work_struct *work)
620 {
621 struct bfad_im_port_s *im_port =
622 container_of(work, struct bfad_im_port_s, port_delete_work);
623
624 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
625 im_port->flags |= BFAD_PORT_DELETE;
626 fc_vport_terminate(im_port->fc_vport);
627 }
628 }
629
630 bfa_status_t
631 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
632 {
633 int rc = BFA_STATUS_OK;
634 struct bfad_im_port_s *im_port;
635
636 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
637 if (im_port == NULL) {
638 rc = BFA_STATUS_ENOMEM;
639 goto ext;
640 }
641 port->im_port = im_port;
642 im_port->port = port;
643 im_port->bfad = bfad;
644
645 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
646 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
647 INIT_LIST_HEAD(&im_port->binding_list);
648
649 ext:
650 return rc;
651 }
652
653 void
654 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
655 {
656 struct bfad_im_port_s *im_port = port->im_port;
657
658 queue_work(bfad->im->drv_workq,
659 &im_port->port_delete_work);
660 }
661
662 void
663 bfad_im_port_clean(struct bfad_im_port_s *im_port)
664 {
665 struct bfad_fcp_binding *bp, *bp_new;
666 unsigned long flags;
667 struct bfad_s *bfad = im_port->bfad;
668
669 spin_lock_irqsave(&bfad->bfad_lock, flags);
670 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
671 list_entry) {
672 list_del(&bp->list_entry);
673 kfree(bp);
674 }
675
676 /* the itnim_mapped_list must be empty at this time */
677 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
678
679 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
680 }
681
682 static void bfad_aen_im_notify_handler(struct work_struct *work)
683 {
684 struct bfad_im_s *im =
685 container_of(work, struct bfad_im_s, aen_im_notify_work);
686 struct bfa_aen_entry_s *aen_entry;
687 struct bfad_s *bfad = im->bfad;
688 struct Scsi_Host *shost = bfad->pport.im_port->shost;
689 void *event_data;
690 unsigned long flags;
691
692 while (!list_empty(&bfad->active_aen_q)) {
693 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
694 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
695 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
696 event_data = (char *)aen_entry + sizeof(struct list_head);
697 fc_host_post_vendor_event(shost, fc_get_event_number(),
698 sizeof(struct bfa_aen_entry_s) -
699 sizeof(struct list_head),
700 (char *)event_data, BFAD_NL_VENDOR_ID);
701 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
702 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
703 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
704 }
705 }
706
707 bfa_status_t
708 bfad_im_probe(struct bfad_s *bfad)
709 {
710 struct bfad_im_s *im;
711
712 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
713 if (im == NULL)
714 return BFA_STATUS_ENOMEM;
715
716 bfad->im = im;
717 im->bfad = bfad;
718
719 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
720 kfree(im);
721 return BFA_STATUS_FAILED;
722 }
723
724 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
725 return BFA_STATUS_OK;
726 }
727
728 void
729 bfad_im_probe_undo(struct bfad_s *bfad)
730 {
731 if (bfad->im) {
732 bfad_destroy_workq(bfad->im);
733 kfree(bfad->im);
734 bfad->im = NULL;
735 }
736 }
737
738 struct Scsi_Host *
739 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
740 {
741 struct scsi_host_template *sht;
742
743 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
744 sht = &bfad_im_scsi_host_template;
745 else
746 sht = &bfad_im_vport_template;
747
748 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
749 sht->max_sectors = max_xfer_size << 1;
750
751 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
752
753 return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));
754 }
755
756 void
757 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
758 {
759 if (!(im_port->flags & BFAD_PORT_DELETE))
760 flush_workqueue(bfad->im->drv_workq);
761 bfad_im_scsi_host_free(im_port->bfad, im_port);
762 bfad_im_port_clean(im_port);
763 kfree(im_port);
764 }
765
766 void
767 bfad_destroy_workq(struct bfad_im_s *im)
768 {
769 if (im && im->drv_workq) {
770 flush_workqueue(im->drv_workq);
771 destroy_workqueue(im->drv_workq);
772 im->drv_workq = NULL;
773 }
774 }
775
776 bfa_status_t
777 bfad_thread_workq(struct bfad_s *bfad)
778 {
779 struct bfad_im_s *im = bfad->im;
780
781 bfa_trc(bfad, 0);
782 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
783 bfad->inst_no);
784 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
785 if (!im->drv_workq)
786 return BFA_STATUS_FAILED;
787
788 return BFA_STATUS_OK;
789 }
790
791 /*
792 * Scsi_Host template entry.
793 *
794 * Description:
795 * OS entry point to adjust the queue_depths on a per-device basis.
796 * Called once per device during the bus scan.
797 * Return non-zero if fails.
798 */
799 static int
800 bfad_im_slave_configure(struct scsi_device *sdev)
801 {
802 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
803 return 0;
804 }
805
806 struct scsi_host_template bfad_im_scsi_host_template = {
807 .module = THIS_MODULE,
808 .name = BFAD_DRIVER_NAME,
809 .info = bfad_im_info,
810 .queuecommand = bfad_im_queuecommand,
811 .eh_timed_out = fc_eh_timed_out,
812 .eh_abort_handler = bfad_im_abort_handler,
813 .eh_device_reset_handler = bfad_im_reset_lun_handler,
814 .eh_target_reset_handler = bfad_im_reset_target_handler,
815
816 .slave_alloc = bfad_im_slave_alloc,
817 .slave_configure = bfad_im_slave_configure,
818 .slave_destroy = bfad_im_slave_destroy,
819
820 .this_id = -1,
821 .sg_tablesize = BFAD_IO_MAX_SGE,
822 .cmd_per_lun = 3,
823 .use_clustering = ENABLE_CLUSTERING,
824 .shost_attrs = bfad_im_host_attrs,
825 .max_sectors = BFAD_MAX_SECTORS,
826 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
827 };
828
829 struct scsi_host_template bfad_im_vport_template = {
830 .module = THIS_MODULE,
831 .name = BFAD_DRIVER_NAME,
832 .info = bfad_im_info,
833 .queuecommand = bfad_im_queuecommand,
834 .eh_timed_out = fc_eh_timed_out,
835 .eh_abort_handler = bfad_im_abort_handler,
836 .eh_device_reset_handler = bfad_im_reset_lun_handler,
837 .eh_target_reset_handler = bfad_im_reset_target_handler,
838
839 .slave_alloc = bfad_im_slave_alloc,
840 .slave_configure = bfad_im_slave_configure,
841 .slave_destroy = bfad_im_slave_destroy,
842
843 .this_id = -1,
844 .sg_tablesize = BFAD_IO_MAX_SGE,
845 .cmd_per_lun = 3,
846 .use_clustering = ENABLE_CLUSTERING,
847 .shost_attrs = bfad_im_vport_attrs,
848 .max_sectors = BFAD_MAX_SECTORS,
849 };
850
851 bfa_status_t
852 bfad_im_module_init(void)
853 {
854 bfad_im_scsi_transport_template =
855 fc_attach_transport(&bfad_im_fc_function_template);
856 if (!bfad_im_scsi_transport_template)
857 return BFA_STATUS_ENOMEM;
858
859 bfad_im_scsi_vport_transport_template =
860 fc_attach_transport(&bfad_im_vport_fc_function_template);
861 if (!bfad_im_scsi_vport_transport_template) {
862 fc_release_transport(bfad_im_scsi_transport_template);
863 return BFA_STATUS_ENOMEM;
864 }
865
866 return BFA_STATUS_OK;
867 }
868
869 void
870 bfad_im_module_exit(void)
871 {
872 if (bfad_im_scsi_transport_template)
873 fc_release_transport(bfad_im_scsi_transport_template);
874
875 if (bfad_im_scsi_vport_transport_template)
876 fc_release_transport(bfad_im_scsi_vport_transport_template);
877
878 idr_destroy(&bfad_im_port_index);
879 }
880
881 void
882 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
883 {
884 struct scsi_device *tmp_sdev;
885
886 if (((jiffies - itnim->last_ramp_up_time) >
887 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
888 ((jiffies - itnim->last_queue_full_time) >
889 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
890 shost_for_each_device(tmp_sdev, sdev->host) {
891 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
892 if (tmp_sdev->id != sdev->id)
893 continue;
894 scsi_change_queue_depth(tmp_sdev,
895 tmp_sdev->queue_depth + 1);
896
897 itnim->last_ramp_up_time = jiffies;
898 }
899 }
900 }
901 }
902
903 void
904 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
905 {
906 struct scsi_device *tmp_sdev;
907
908 itnim->last_queue_full_time = jiffies;
909
910 shost_for_each_device(tmp_sdev, sdev->host) {
911 if (tmp_sdev->id != sdev->id)
912 continue;
913 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
914 }
915 }
916
917 struct bfad_itnim_s *
918 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
919 {
920 struct bfad_itnim_s *itnim = NULL;
921
922 /* Search the mapped list for this target ID */
923 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
924 if (id == itnim->scsi_tgt_id)
925 return itnim;
926 }
927
928 return NULL;
929 }
930
931 /*
932 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
933 * Has the logic to query the LUN Mask database to check if this LUN needs to
934 * be made visible to the SCSI mid-layer or not.
935 *
936 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
937 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
938 */
939 static int
940 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
941 struct fc_rport *rport)
942 {
943 struct bfad_itnim_data_s *itnim_data =
944 (struct bfad_itnim_data_s *) rport->dd_data;
945 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
946 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
947 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
948 int i = 0, ret = -ENXIO;
949
950 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
951 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
952 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
953 lun_list[i].rp_tag == bfa_rport->rport_tag &&
954 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
955 ret = BFA_STATUS_OK;
956 break;
957 }
958 }
959 return ret;
960 }
961
962 /*
963 * Scsi_Host template entry slave_alloc
964 */
965 static int
966 bfad_im_slave_alloc(struct scsi_device *sdev)
967 {
968 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
969 struct bfad_itnim_data_s *itnim_data;
970 struct bfa_s *bfa;
971
972 if (!rport || fc_remote_port_chkready(rport))
973 return -ENXIO;
974
975 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
976 bfa = itnim_data->itnim->bfa_itnim->bfa;
977
978 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
979 /*
980 * We should not mask LUN 0 - since this will translate
981 * to no LUN / TARGET for SCSI ml resulting no scan.
982 */
983 if (sdev->lun == 0) {
984 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
985 BLIST_SPARSELUN;
986 goto done;
987 }
988
989 /*
990 * Query LUN Mask configuration - to expose this LUN
991 * to the SCSI mid-layer or to mask it.
992 */
993 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
994 BFA_STATUS_OK)
995 return -ENXIO;
996 }
997 done:
998 sdev->hostdata = rport->dd_data;
999
1000 return 0;
1001 }
1002
1003 u32
1004 bfad_im_supported_speeds(struct bfa_s *bfa)
1005 {
1006 struct bfa_ioc_attr_s *ioc_attr;
1007 u32 supported_speed = 0;
1008
1009 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1010 if (!ioc_attr)
1011 return 0;
1012
1013 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1014 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1015 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1016 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1017 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1018 if (ioc_attr->adapter_attr.is_mezz) {
1019 supported_speed |= FC_PORTSPEED_8GBIT |
1020 FC_PORTSPEED_4GBIT |
1021 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1022 } else {
1023 supported_speed |= FC_PORTSPEED_8GBIT |
1024 FC_PORTSPEED_4GBIT |
1025 FC_PORTSPEED_2GBIT;
1026 }
1027 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1028 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1029 FC_PORTSPEED_1GBIT;
1030 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1031 supported_speed |= FC_PORTSPEED_10GBIT;
1032 }
1033 kfree(ioc_attr);
1034 return supported_speed;
1035 }
1036
1037 void
1038 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1039 {
1040 struct Scsi_Host *host = im_port->shost;
1041 struct bfad_s *bfad = im_port->bfad;
1042 struct bfad_port_s *port = im_port->port;
1043 char symname[BFA_SYMNAME_MAXLEN];
1044 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1045
1046 fc_host_node_name(host) =
1047 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1048 fc_host_port_name(host) =
1049 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1050 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1051
1052 fc_host_supported_classes(host) = FC_COS_CLASS3;
1053
1054 memset(fc_host_supported_fc4s(host), 0,
1055 sizeof(fc_host_supported_fc4s(host)));
1056 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1057 /* For FCP type 0x08 */
1058 fc_host_supported_fc4s(host)[2] = 1;
1059 /* For fibre channel services type 0x20 */
1060 fc_host_supported_fc4s(host)[7] = 1;
1061
1062 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1063 BFA_SYMNAME_MAXLEN);
1064 sprintf(fc_host_symbolic_name(host), "%s", symname);
1065
1066 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1067 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1068 }
1069
1070 static void
1071 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1072 {
1073 struct fc_rport_identifiers rport_ids;
1074 struct fc_rport *fc_rport;
1075 struct bfad_itnim_data_s *itnim_data;
1076
1077 rport_ids.node_name =
1078 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1079 rport_ids.port_name =
1080 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1081 rport_ids.port_id =
1082 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1083 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1084
1085 itnim->fc_rport = fc_rport =
1086 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1087
1088 if (!fc_rport)
1089 return;
1090
1091 fc_rport->maxframe_size =
1092 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1093 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1094
1095 itnim_data = fc_rport->dd_data;
1096 itnim_data->itnim = itnim;
1097
1098 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1099
1100 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1101 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1102
1103 if ((fc_rport->scsi_target_id != -1)
1104 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1105 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1106
1107 itnim->channel = fc_rport->channel;
1108
1109 return;
1110 }
1111
1112 /*
1113 * Work queue handler using FC transport service
1114 * Context: kernel
1115 */
1116 static void
1117 bfad_im_itnim_work_handler(struct work_struct *work)
1118 {
1119 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1120 itnim_work);
1121 struct bfad_im_s *im = itnim->im;
1122 struct bfad_s *bfad = im->bfad;
1123 struct bfad_im_port_s *im_port;
1124 unsigned long flags;
1125 struct fc_rport *fc_rport;
1126 wwn_t wwpn;
1127 u32 fcid;
1128 char wwpn_str[32], fcid_str[16];
1129
1130 spin_lock_irqsave(&bfad->bfad_lock, flags);
1131 im_port = itnim->im_port;
1132 bfa_trc(bfad, itnim->state);
1133 switch (itnim->state) {
1134 case ITNIM_STATE_ONLINE:
1135 if (!itnim->fc_rport) {
1136 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1137 bfad_im_fc_rport_add(im_port, itnim);
1138 spin_lock_irqsave(&bfad->bfad_lock, flags);
1139 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1140 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1141 wwn2str(wwpn_str, wwpn);
1142 fcid2str(fcid_str, fcid);
1143 list_add_tail(&itnim->list_entry,
1144 &im_port->itnim_mapped_list);
1145 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1146 "ITNIM ONLINE Target: %d:0:%d "
1147 "FCID: %s WWPN: %s\n",
1148 im_port->shost->host_no,
1149 itnim->scsi_tgt_id,
1150 fcid_str, wwpn_str);
1151 } else {
1152 printk(KERN_WARNING
1153 "%s: itnim %llx is already in online state\n",
1154 __func__,
1155 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1156 }
1157
1158 break;
1159 case ITNIM_STATE_OFFLINE_PENDING:
1160 itnim->state = ITNIM_STATE_OFFLINE;
1161 if (itnim->fc_rport) {
1162 fc_rport = itnim->fc_rport;
1163 ((struct bfad_itnim_data_s *)
1164 fc_rport->dd_data)->itnim = NULL;
1165 itnim->fc_rport = NULL;
1166 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1167 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1168 fc_rport->dev_loss_tmo =
1169 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1170 fc_remote_port_delete(fc_rport);
1171 spin_lock_irqsave(&bfad->bfad_lock, flags);
1172 }
1173 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1174 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1175 wwn2str(wwpn_str, wwpn);
1176 fcid2str(fcid_str, fcid);
1177 list_del(&itnim->list_entry);
1178 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1179 "ITNIM OFFLINE Target: %d:0:%d "
1180 "FCID: %s WWPN: %s\n",
1181 im_port->shost->host_no,
1182 itnim->scsi_tgt_id,
1183 fcid_str, wwpn_str);
1184 }
1185 break;
1186 case ITNIM_STATE_FREE:
1187 if (itnim->fc_rport) {
1188 fc_rport = itnim->fc_rport;
1189 ((struct bfad_itnim_data_s *)
1190 fc_rport->dd_data)->itnim = NULL;
1191 itnim->fc_rport = NULL;
1192 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1193 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1194 fc_rport->dev_loss_tmo =
1195 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1196 fc_remote_port_delete(fc_rport);
1197 spin_lock_irqsave(&bfad->bfad_lock, flags);
1198 }
1199 list_del(&itnim->list_entry);
1200 }
1201
1202 kfree(itnim);
1203 break;
1204 default:
1205 WARN_ON(1);
1206 break;
1207 }
1208
1209 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1210 }
1211
1212 /*
1213 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1214 */
1215 static int
1216 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1217 {
1218 struct bfad_im_port_s *im_port =
1219 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1220 struct bfad_s *bfad = im_port->bfad;
1221 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1222 struct bfad_itnim_s *itnim;
1223 struct bfa_ioim_s *hal_io;
1224 unsigned long flags;
1225 int rc;
1226 int sg_cnt = 0;
1227 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1228
1229 rc = fc_remote_port_chkready(rport);
1230 if (rc) {
1231 cmnd->result = rc;
1232 done(cmnd);
1233 return 0;
1234 }
1235
1236 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1237 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1238 cmnd->result = DID_NO_CONNECT << 16;
1239 else
1240 cmnd->result = DID_REQUEUE << 16;
1241 done(cmnd);
1242 return 0;
1243 }
1244
1245 sg_cnt = scsi_dma_map(cmnd);
1246 if (sg_cnt < 0)
1247 return SCSI_MLQUEUE_HOST_BUSY;
1248
1249 cmnd->scsi_done = done;
1250
1251 spin_lock_irqsave(&bfad->bfad_lock, flags);
1252 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1253 printk(KERN_WARNING
1254 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1255 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1256 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1257 goto out_fail_cmd;
1258 }
1259
1260
1261 itnim = itnim_data->itnim;
1262 if (!itnim) {
1263 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1264 goto out_fail_cmd;
1265 }
1266
1267 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1268 itnim->bfa_itnim, sg_cnt);
1269 if (!hal_io) {
1270 printk(KERN_WARNING "hal_io failure\n");
1271 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1272 scsi_dma_unmap(cmnd);
1273 return SCSI_MLQUEUE_HOST_BUSY;
1274 }
1275
1276 cmnd->host_scribble = (char *)hal_io;
1277 bfa_ioim_start(hal_io);
1278 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1279
1280 return 0;
1281
1282 out_fail_cmd:
1283 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1284 scsi_dma_unmap(cmnd);
1285 if (done)
1286 done(cmnd);
1287
1288 return 0;
1289 }
1290
1291 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1292
1293 void
1294 bfad_rport_online_wait(struct bfad_s *bfad)
1295 {
1296 int i;
1297 int rport_delay = 10;
1298
1299 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1300 && i < bfa_linkup_delay; i++) {
1301 set_current_state(TASK_UNINTERRUPTIBLE);
1302 schedule_timeout(HZ);
1303 }
1304
1305 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1306 rport_delay = rport_delay < bfa_linkup_delay ?
1307 rport_delay : bfa_linkup_delay;
1308 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1309 && i < rport_delay; i++) {
1310 set_current_state(TASK_UNINTERRUPTIBLE);
1311 schedule_timeout(HZ);
1312 }
1313
1314 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1315 set_current_state(TASK_UNINTERRUPTIBLE);
1316 schedule_timeout(rport_delay * HZ);
1317 }
1318 }
1319 }
1320
1321 int
1322 bfad_get_linkup_delay(struct bfad_s *bfad)
1323 {
1324 u8 nwwns = 0;
1325 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1326 int linkup_delay;
1327
1328 /*
1329 * Querying for the boot target port wwns
1330 * -- read from boot information in flash.
1331 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1332 * else => local boot machine set linkup_delay = 0
1333 */
1334
1335 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1336
1337 if (nwwns > 0)
1338 /* If Boot over SAN set linkup_delay = 30sec */
1339 linkup_delay = 30;
1340 else
1341 /* If local boot; no linkup_delay */
1342 linkup_delay = 0;
1343
1344 return linkup_delay;
1345 }
CRIS linux kernel tree