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drm/virtio: Don't return error if virtio-gpu PCI dev is not found
[drm/drm-misc.git] / drivers / scsi / bfa / bfad_im.c
blob66fb701401de76c8cc17efa87779d210081183ee
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 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 | SAM_STAT_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 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 bfad_priv(cmnd)->status |= tsk_status << 1;
154 set_bit(IO_DONE_BIT, &bfad_priv(cmnd)->status);
155 wq = bfad_priv(cmnd)->wq;
156 bfad_priv(cmnd)->wq = 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 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 bfad_priv(cmnd)->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 bfad_priv(cmnd)->wq = &wq;
330 bfad_priv(cmnd)->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, &bfad_priv(cmnd)->status));
351
352 task_status = bfad_priv(cmnd)->status >> 1;
353 if (task_status != BFI_TSKIM_STS_OK) {
354 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
355 "LUN reset failure, status: %d\n", task_status);
356 rc = FAILED;
357 }
358
359 out:
360 return rc;
361 }
362
363 /*
364 * Scsi_Host template entry, resets the target and abort all commands.
365 */
366 static int
367 bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
368 {
369 struct Scsi_Host *shost = cmnd->device->host;
370 struct scsi_target *starget = scsi_target(cmnd->device);
371 struct bfad_im_port_s *im_port =
372 (struct bfad_im_port_s *) shost->hostdata[0];
373 struct bfad_s *bfad = im_port->bfad;
374 struct bfad_itnim_s *itnim;
375 unsigned long flags;
376 u32 rc, rtn = FAILED;
377 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
378 enum bfi_tskim_status task_status;
379
380 spin_lock_irqsave(&bfad->bfad_lock, flags);
381 itnim = bfad_get_itnim(im_port, starget->id);
382 if (itnim) {
383 bfad_priv(cmnd)->wq = &wq;
384 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
385 if (rc == BFA_STATUS_OK) {
386 /* wait target reset to complete */
387 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
388 wait_event(wq, test_bit(IO_DONE_BIT,
389 &bfad_priv(cmnd)->status));
390 spin_lock_irqsave(&bfad->bfad_lock, flags);
391
392 task_status = bfad_priv(cmnd)->status >> 1;
393 if (task_status != BFI_TSKIM_STS_OK)
394 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
395 "target reset failure,"
396 " status: %d\n", task_status);
397 else
398 rtn = SUCCESS;
399 }
400 }
401 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
402
403 return rtn;
404 }
405
406 /*
407 * Scsi_Host template entry slave_destroy.
408 */
409 static void
410 bfad_im_slave_destroy(struct scsi_device *sdev)
411 {
412 sdev->hostdata = NULL;
413 return;
414 }
415
416 /*
417 * BFA FCS itnim callbacks
418 */
419
420 /*
421 * BFA FCS itnim alloc callback, after successful PRLI
422 * Context: Interrupt
423 */
424 int
425 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
426 struct bfad_itnim_s **itnim_drv)
427 {
428 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
429 if (*itnim_drv == NULL)
430 return -ENOMEM;
431
432 (*itnim_drv)->im = bfad->im;
433 *itnim = &(*itnim_drv)->fcs_itnim;
434 (*itnim_drv)->state = ITNIM_STATE_NONE;
435
436 /*
437 * Initiaze the itnim_work
438 */
439 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
440 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
441 return 0;
442 }
443
444 /*
445 * BFA FCS itnim free callback.
446 * Context: Interrupt. bfad_lock is held
447 */
448 void
449 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
450 {
451 struct bfad_port_s *port;
452 wwn_t wwpn;
453 u32 fcid;
454 char wwpn_str[32], fcid_str[16];
455 struct bfad_im_s *im = itnim_drv->im;
456
457 /* online to free state transtion should not happen */
458 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
459
460 itnim_drv->queue_work = 1;
461 /* offline request is not yet done, use the same request to free */
462 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
463 itnim_drv->queue_work = 0;
464
465 itnim_drv->state = ITNIM_STATE_FREE;
466 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
467 itnim_drv->im_port = port->im_port;
468 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
469 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
470 wwn2str(wwpn_str, wwpn);
471 fcid2str(fcid_str, fcid);
472 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
473 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
474 port->im_port->shost->host_no,
475 fcid_str, wwpn_str);
476
477 /* ITNIM processing */
478 if (itnim_drv->queue_work)
479 queue_work(im->drv_workq, &itnim_drv->itnim_work);
480 }
481
482 /*
483 * BFA FCS itnim online callback.
484 * Context: Interrupt. bfad_lock is held
485 */
486 void
487 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
488 {
489 struct bfad_port_s *port;
490 struct bfad_im_s *im = itnim_drv->im;
491
492 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
493 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
494 itnim_drv->state = ITNIM_STATE_ONLINE;
495 itnim_drv->queue_work = 1;
496 itnim_drv->im_port = port->im_port;
497
498 /* ITNIM processing */
499 if (itnim_drv->queue_work)
500 queue_work(im->drv_workq, &itnim_drv->itnim_work);
501 }
502
503 /*
504 * BFA FCS itnim offline callback.
505 * Context: Interrupt. bfad_lock is held
506 */
507 void
508 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
509 {
510 struct bfad_port_s *port;
511 struct bfad_s *bfad;
512 struct bfad_im_s *im = itnim_drv->im;
513
514 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
515 bfad = port->bfad;
516 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
517 (port->flags & BFAD_PORT_DELETE)) {
518 itnim_drv->state = ITNIM_STATE_OFFLINE;
519 return;
520 }
521 itnim_drv->im_port = port->im_port;
522 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
523 itnim_drv->queue_work = 1;
524
525 /* ITNIM processing */
526 if (itnim_drv->queue_work)
527 queue_work(im->drv_workq, &itnim_drv->itnim_work);
528 }
529
530 /*
531 * Allocate a Scsi_Host for a port.
532 */
533 int
534 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
535 struct device *dev)
536 {
537 struct bfad_im_port_pointer *im_portp;
538 int error;
539
540 mutex_lock(&bfad_mutex);
541 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
542 if (error < 0) {
543 mutex_unlock(&bfad_mutex);
544 printk(KERN_WARNING "idr_alloc failure\n");
545 goto out;
546 }
547 im_port->idr_id = error;
548 mutex_unlock(&bfad_mutex);
549
550 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
551 if (!im_port->shost) {
552 error = 1;
553 goto out_free_idr;
554 }
555
556 im_portp = shost_priv(im_port->shost);
557 im_portp->p = im_port;
558 im_port->shost->unique_id = im_port->idr_id;
559 im_port->shost->this_id = -1;
560 im_port->shost->max_id = MAX_FCP_TARGET;
561 im_port->shost->max_lun = MAX_FCP_LUN;
562 im_port->shost->max_cmd_len = 16;
563 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
564 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
565 im_port->shost->transportt = bfad_im_scsi_transport_template;
566 else
567 im_port->shost->transportt =
568 bfad_im_scsi_vport_transport_template;
569
570 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
571 if (error) {
572 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
573 goto out_fc_rel;
574 }
575
576 return 0;
577
578 out_fc_rel:
579 scsi_host_put(im_port->shost);
580 im_port->shost = NULL;
581 out_free_idr:
582 mutex_lock(&bfad_mutex);
583 idr_remove(&bfad_im_port_index, im_port->idr_id);
584 mutex_unlock(&bfad_mutex);
585 out:
586 return error;
587 }
588
589 void
590 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
591 {
592 bfa_trc(bfad, bfad->inst_no);
593 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
594 im_port->shost->host_no);
595
596 fc_remove_host(im_port->shost);
597
598 scsi_remove_host(im_port->shost);
599 scsi_host_put(im_port->shost);
600
601 mutex_lock(&bfad_mutex);
602 idr_remove(&bfad_im_port_index, im_port->idr_id);
603 mutex_unlock(&bfad_mutex);
604 }
605
606 static void
607 bfad_im_port_delete_handler(struct work_struct *work)
608 {
609 struct bfad_im_port_s *im_port =
610 container_of(work, struct bfad_im_port_s, port_delete_work);
611
612 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
613 im_port->flags |= BFAD_PORT_DELETE;
614 fc_vport_terminate(im_port->fc_vport);
615 }
616 }
617
618 bfa_status_t
619 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
620 {
621 int rc = BFA_STATUS_OK;
622 struct bfad_im_port_s *im_port;
623
624 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
625 if (im_port == NULL) {
626 rc = BFA_STATUS_ENOMEM;
627 goto ext;
628 }
629 port->im_port = im_port;
630 im_port->port = port;
631 im_port->bfad = bfad;
632
633 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
634 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
635 INIT_LIST_HEAD(&im_port->binding_list);
636
637 ext:
638 return rc;
639 }
640
641 void
642 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
643 {
644 struct bfad_im_port_s *im_port = port->im_port;
645
646 queue_work(bfad->im->drv_workq,
647 &im_port->port_delete_work);
648 }
649
650 void
651 bfad_im_port_clean(struct bfad_im_port_s *im_port)
652 {
653 struct bfad_fcp_binding *bp, *bp_new;
654 unsigned long flags;
655 struct bfad_s *bfad = im_port->bfad;
656
657 spin_lock_irqsave(&bfad->bfad_lock, flags);
658 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
659 list_entry) {
660 list_del(&bp->list_entry);
661 kfree(bp);
662 }
663
664 /* the itnim_mapped_list must be empty at this time */
665 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
666
667 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
668 }
669
670 static void bfad_aen_im_notify_handler(struct work_struct *work)
671 {
672 struct bfad_im_s *im =
673 container_of(work, struct bfad_im_s, aen_im_notify_work);
674 struct bfa_aen_entry_s *aen_entry;
675 struct bfad_s *bfad = im->bfad;
676 struct Scsi_Host *shost = bfad->pport.im_port->shost;
677 void *event_data;
678 unsigned long flags;
679
680 while (!list_empty(&bfad->active_aen_q)) {
681 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
682 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
683 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
684 event_data = (char *)aen_entry + sizeof(struct list_head);
685 fc_host_post_vendor_event(shost, fc_get_event_number(),
686 sizeof(struct bfa_aen_entry_s) -
687 sizeof(struct list_head),
688 (char *)event_data, BFAD_NL_VENDOR_ID);
689 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
690 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
691 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
692 }
693 }
694
695 bfa_status_t
696 bfad_im_probe(struct bfad_s *bfad)
697 {
698 struct bfad_im_s *im;
699
700 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
701 if (im == NULL)
702 return BFA_STATUS_ENOMEM;
703
704 bfad->im = im;
705 im->bfad = bfad;
706
707 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
708 kfree(im);
709 return BFA_STATUS_FAILED;
710 }
711
712 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
713 return BFA_STATUS_OK;
714 }
715
716 void
717 bfad_im_probe_undo(struct bfad_s *bfad)
718 {
719 if (bfad->im) {
720 bfad_destroy_workq(bfad->im);
721 kfree(bfad->im);
722 bfad->im = NULL;
723 }
724 }
725
726 struct Scsi_Host *
727 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
728 {
729 struct scsi_host_template *sht;
730
731 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
732 sht = &bfad_im_scsi_host_template;
733 else
734 sht = &bfad_im_vport_template;
735
736 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
737 sht->max_sectors = max_xfer_size << 1;
738
739 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
740
741 return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));
742 }
743
744 void
745 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
746 {
747 if (!(im_port->flags & BFAD_PORT_DELETE))
748 flush_workqueue(bfad->im->drv_workq);
749 bfad_im_scsi_host_free(im_port->bfad, im_port);
750 bfad_im_port_clean(im_port);
751 kfree(im_port);
752 }
753
754 void
755 bfad_destroy_workq(struct bfad_im_s *im)
756 {
757 if (im && im->drv_workq) {
758 destroy_workqueue(im->drv_workq);
759 im->drv_workq = NULL;
760 }
761 }
762
763 bfa_status_t
764 bfad_thread_workq(struct bfad_s *bfad)
765 {
766 struct bfad_im_s *im = bfad->im;
767
768 bfa_trc(bfad, 0);
769 im->drv_workq = alloc_ordered_workqueue("bfad_wq_%d", WQ_MEM_RECLAIM,
770 bfad->inst_no);
771 if (!im->drv_workq)
772 return BFA_STATUS_FAILED;
773
774 return BFA_STATUS_OK;
775 }
776
777 /*
778 * Scsi_Host template entry.
779 *
780 * Description:
781 * OS entry point to adjust the queue_depths on a per-device basis.
782 * Called once per device during the bus scan.
783 * Return non-zero if fails.
784 */
785 static int
786 bfad_im_slave_configure(struct scsi_device *sdev)
787 {
788 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
789 return 0;
790 }
791
792 struct scsi_host_template bfad_im_scsi_host_template = {
793 .module = THIS_MODULE,
794 .name = BFAD_DRIVER_NAME,
795 .info = bfad_im_info,
796 .queuecommand = bfad_im_queuecommand,
797 .cmd_size = sizeof(struct bfad_cmd_priv),
798 .eh_timed_out = fc_eh_timed_out,
799 .eh_abort_handler = bfad_im_abort_handler,
800 .eh_device_reset_handler = bfad_im_reset_lun_handler,
801 .eh_target_reset_handler = bfad_im_reset_target_handler,
802
803 .slave_alloc = bfad_im_slave_alloc,
804 .slave_configure = bfad_im_slave_configure,
805 .slave_destroy = bfad_im_slave_destroy,
806
807 .this_id = -1,
808 .sg_tablesize = BFAD_IO_MAX_SGE,
809 .cmd_per_lun = 3,
810 .shost_groups = bfad_im_host_groups,
811 .max_sectors = BFAD_MAX_SECTORS,
812 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
813 };
814
815 struct scsi_host_template bfad_im_vport_template = {
816 .module = THIS_MODULE,
817 .name = BFAD_DRIVER_NAME,
818 .info = bfad_im_info,
819 .queuecommand = bfad_im_queuecommand,
820 .cmd_size = sizeof(struct bfad_cmd_priv),
821 .eh_timed_out = fc_eh_timed_out,
822 .eh_abort_handler = bfad_im_abort_handler,
823 .eh_device_reset_handler = bfad_im_reset_lun_handler,
824 .eh_target_reset_handler = bfad_im_reset_target_handler,
825
826 .slave_alloc = bfad_im_slave_alloc,
827 .slave_configure = bfad_im_slave_configure,
828 .slave_destroy = bfad_im_slave_destroy,
829
830 .this_id = -1,
831 .sg_tablesize = BFAD_IO_MAX_SGE,
832 .cmd_per_lun = 3,
833 .shost_groups = bfad_im_vport_groups,
834 .max_sectors = BFAD_MAX_SECTORS,
835 };
836
837 bfa_status_t
838 bfad_im_module_init(void)
839 {
840 bfad_im_scsi_transport_template =
841 fc_attach_transport(&bfad_im_fc_function_template);
842 if (!bfad_im_scsi_transport_template)
843 return BFA_STATUS_ENOMEM;
844
845 bfad_im_scsi_vport_transport_template =
846 fc_attach_transport(&bfad_im_vport_fc_function_template);
847 if (!bfad_im_scsi_vport_transport_template) {
848 fc_release_transport(bfad_im_scsi_transport_template);
849 return BFA_STATUS_ENOMEM;
850 }
851
852 return BFA_STATUS_OK;
853 }
854
855 void
856 bfad_im_module_exit(void)
857 {
858 if (bfad_im_scsi_transport_template)
859 fc_release_transport(bfad_im_scsi_transport_template);
860
861 if (bfad_im_scsi_vport_transport_template)
862 fc_release_transport(bfad_im_scsi_vport_transport_template);
863
864 idr_destroy(&bfad_im_port_index);
865 }
866
867 void
868 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
869 {
870 struct scsi_device *tmp_sdev;
871
872 if (((jiffies - itnim->last_ramp_up_time) >
873 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
874 ((jiffies - itnim->last_queue_full_time) >
875 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
876 shost_for_each_device(tmp_sdev, sdev->host) {
877 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
878 if (tmp_sdev->id != sdev->id)
879 continue;
880 scsi_change_queue_depth(tmp_sdev,
881 tmp_sdev->queue_depth + 1);
882
883 itnim->last_ramp_up_time = jiffies;
884 }
885 }
886 }
887 }
888
889 void
890 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
891 {
892 struct scsi_device *tmp_sdev;
893
894 itnim->last_queue_full_time = jiffies;
895
896 shost_for_each_device(tmp_sdev, sdev->host) {
897 if (tmp_sdev->id != sdev->id)
898 continue;
899 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
900 }
901 }
902
903 struct bfad_itnim_s *
904 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
905 {
906 struct bfad_itnim_s *itnim = NULL;
907
908 /* Search the mapped list for this target ID */
909 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
910 if (id == itnim->scsi_tgt_id)
911 return itnim;
912 }
913
914 return NULL;
915 }
916
917 /*
918 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
919 * Has the logic to query the LUN Mask database to check if this LUN needs to
920 * be made visible to the SCSI mid-layer or not.
921 *
922 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
923 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
924 */
925 static int
926 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
927 struct fc_rport *rport)
928 {
929 struct bfad_itnim_data_s *itnim_data =
930 (struct bfad_itnim_data_s *) rport->dd_data;
931 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
932 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
933 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
934 int i = 0, ret = -ENXIO;
935
936 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
937 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
938 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
939 lun_list[i].rp_tag == bfa_rport->rport_tag &&
940 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
941 ret = BFA_STATUS_OK;
942 break;
943 }
944 }
945 return ret;
946 }
947
948 /*
949 * Scsi_Host template entry slave_alloc
950 */
951 static int
952 bfad_im_slave_alloc(struct scsi_device *sdev)
953 {
954 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
955 struct bfad_itnim_data_s *itnim_data;
956 struct bfa_s *bfa;
957
958 if (!rport || fc_remote_port_chkready(rport))
959 return -ENXIO;
960
961 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
962 bfa = itnim_data->itnim->bfa_itnim->bfa;
963
964 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
965 /*
966 * We should not mask LUN 0 - since this will translate
967 * to no LUN / TARGET for SCSI ml resulting no scan.
968 */
969 if (sdev->lun == 0) {
970 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
971 BLIST_SPARSELUN;
972 goto done;
973 }
974
975 /*
976 * Query LUN Mask configuration - to expose this LUN
977 * to the SCSI mid-layer or to mask it.
978 */
979 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
980 BFA_STATUS_OK)
981 return -ENXIO;
982 }
983 done:
984 sdev->hostdata = rport->dd_data;
985
986 return 0;
987 }
988
989 u32
990 bfad_im_supported_speeds(struct bfa_s *bfa)
991 {
992 struct bfa_ioc_attr_s *ioc_attr;
993 u32 supported_speed = 0;
994
995 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
996 if (!ioc_attr)
997 return 0;
998
999 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1000 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1001 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1002 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1003 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1004 if (ioc_attr->adapter_attr.is_mezz) {
1005 supported_speed |= FC_PORTSPEED_8GBIT |
1006 FC_PORTSPEED_4GBIT |
1007 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1008 } else {
1009 supported_speed |= FC_PORTSPEED_8GBIT |
1010 FC_PORTSPEED_4GBIT |
1011 FC_PORTSPEED_2GBIT;
1012 }
1013 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1014 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1015 FC_PORTSPEED_1GBIT;
1016 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1017 supported_speed |= FC_PORTSPEED_10GBIT;
1018 }
1019 kfree(ioc_attr);
1020 return supported_speed;
1021 }
1022
1023 void
1024 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1025 {
1026 struct Scsi_Host *host = im_port->shost;
1027 struct bfad_s *bfad = im_port->bfad;
1028 struct bfad_port_s *port = im_port->port;
1029 char symname[BFA_SYMNAME_MAXLEN];
1030 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1031
1032 fc_host_node_name(host) =
1033 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1034 fc_host_port_name(host) =
1035 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1036 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1037
1038 fc_host_supported_classes(host) = FC_COS_CLASS3;
1039
1040 memset(fc_host_supported_fc4s(host), 0,
1041 sizeof(fc_host_supported_fc4s(host)));
1042 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1043 /* For FCP type 0x08 */
1044 fc_host_supported_fc4s(host)[2] = 1;
1045 /* For fibre channel services type 0x20 */
1046 fc_host_supported_fc4s(host)[7] = 1;
1047
1048 strscpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1049 BFA_SYMNAME_MAXLEN);
1050 sprintf(fc_host_symbolic_name(host), "%s", symname);
1051
1052 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1053 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1054 }
1055
1056 static void
1057 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1058 {
1059 struct fc_rport_identifiers rport_ids;
1060 struct fc_rport *fc_rport;
1061 struct bfad_itnim_data_s *itnim_data;
1062
1063 rport_ids.node_name =
1064 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1065 rport_ids.port_name =
1066 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1067 rport_ids.port_id =
1068 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1069 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1070
1071 itnim->fc_rport = fc_rport =
1072 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1073
1074 if (!fc_rport)
1075 return;
1076
1077 fc_rport->maxframe_size =
1078 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1079 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1080
1081 itnim_data = fc_rport->dd_data;
1082 itnim_data->itnim = itnim;
1083
1084 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1085
1086 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1087 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1088
1089 if ((fc_rport->scsi_target_id != -1)
1090 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1091 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1092
1093 itnim->channel = fc_rport->channel;
1094
1095 return;
1096 }
1097
1098 /*
1099 * Work queue handler using FC transport service
1100 * Context: kernel
1101 */
1102 static void
1103 bfad_im_itnim_work_handler(struct work_struct *work)
1104 {
1105 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1106 itnim_work);
1107 struct bfad_im_s *im = itnim->im;
1108 struct bfad_s *bfad = im->bfad;
1109 struct bfad_im_port_s *im_port;
1110 unsigned long flags;
1111 struct fc_rport *fc_rport;
1112 wwn_t wwpn;
1113 u32 fcid;
1114 char wwpn_str[32], fcid_str[16];
1115
1116 spin_lock_irqsave(&bfad->bfad_lock, flags);
1117 im_port = itnim->im_port;
1118 bfa_trc(bfad, itnim->state);
1119 switch (itnim->state) {
1120 case ITNIM_STATE_ONLINE:
1121 if (!itnim->fc_rport) {
1122 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1123 bfad_im_fc_rport_add(im_port, itnim);
1124 spin_lock_irqsave(&bfad->bfad_lock, flags);
1125 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1126 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1127 wwn2str(wwpn_str, wwpn);
1128 fcid2str(fcid_str, fcid);
1129 list_add_tail(&itnim->list_entry,
1130 &im_port->itnim_mapped_list);
1131 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1132 "ITNIM ONLINE Target: %d:0:%d "
1133 "FCID: %s WWPN: %s\n",
1134 im_port->shost->host_no,
1135 itnim->scsi_tgt_id,
1136 fcid_str, wwpn_str);
1137 } else {
1138 printk(KERN_WARNING
1139 "%s: itnim %llx is already in online state\n",
1140 __func__,
1141 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1142 }
1143
1144 break;
1145 case ITNIM_STATE_OFFLINE_PENDING:
1146 itnim->state = ITNIM_STATE_OFFLINE;
1147 if (itnim->fc_rport) {
1148 fc_rport = itnim->fc_rport;
1149 ((struct bfad_itnim_data_s *)
1150 fc_rport->dd_data)->itnim = NULL;
1151 itnim->fc_rport = NULL;
1152 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1153 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1154 fc_rport->dev_loss_tmo =
1155 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1156 fc_remote_port_delete(fc_rport);
1157 spin_lock_irqsave(&bfad->bfad_lock, flags);
1158 }
1159 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1160 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1161 wwn2str(wwpn_str, wwpn);
1162 fcid2str(fcid_str, fcid);
1163 list_del(&itnim->list_entry);
1164 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1165 "ITNIM OFFLINE Target: %d:0:%d "
1166 "FCID: %s WWPN: %s\n",
1167 im_port->shost->host_no,
1168 itnim->scsi_tgt_id,
1169 fcid_str, wwpn_str);
1170 }
1171 break;
1172 case ITNIM_STATE_FREE:
1173 if (itnim->fc_rport) {
1174 fc_rport = itnim->fc_rport;
1175 ((struct bfad_itnim_data_s *)
1176 fc_rport->dd_data)->itnim = NULL;
1177 itnim->fc_rport = NULL;
1178 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1179 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1180 fc_rport->dev_loss_tmo =
1181 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1182 fc_remote_port_delete(fc_rport);
1183 spin_lock_irqsave(&bfad->bfad_lock, flags);
1184 }
1185 list_del(&itnim->list_entry);
1186 }
1187
1188 kfree(itnim);
1189 break;
1190 default:
1191 WARN_ON(1);
1192 break;
1193 }
1194
1195 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1196 }
1197
1198 /*
1199 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1200 */
1201 static int bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd)
1202 {
1203 void (*done)(struct scsi_cmnd *) = scsi_done;
1204 struct bfad_im_port_s *im_port =
1205 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1206 struct bfad_s *bfad = im_port->bfad;
1207 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1208 struct bfad_itnim_s *itnim;
1209 struct bfa_ioim_s *hal_io;
1210 unsigned long flags;
1211 int rc;
1212 int sg_cnt = 0;
1213 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1214
1215 rc = fc_remote_port_chkready(rport);
1216 if (rc) {
1217 cmnd->result = rc;
1218 done(cmnd);
1219 return 0;
1220 }
1221
1222 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1223 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1224 cmnd->result = DID_NO_CONNECT << 16;
1225 else
1226 cmnd->result = DID_REQUEUE << 16;
1227 done(cmnd);
1228 return 0;
1229 }
1230
1231 sg_cnt = scsi_dma_map(cmnd);
1232 if (sg_cnt < 0)
1233 return SCSI_MLQUEUE_HOST_BUSY;
1234
1235 spin_lock_irqsave(&bfad->bfad_lock, flags);
1236 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1237 printk(KERN_WARNING
1238 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1239 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1240 cmnd->result = DID_NO_CONNECT << 16;
1241 goto out_fail_cmd;
1242 }
1243
1244
1245 itnim = itnim_data->itnim;
1246 if (!itnim) {
1247 cmnd->result = DID_IMM_RETRY << 16;
1248 goto out_fail_cmd;
1249 }
1250
1251 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1252 itnim->bfa_itnim, sg_cnt);
1253 if (!hal_io) {
1254 printk(KERN_WARNING "hal_io failure\n");
1255 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1256 scsi_dma_unmap(cmnd);
1257 return SCSI_MLQUEUE_HOST_BUSY;
1258 }
1259
1260 cmnd->host_scribble = (char *)hal_io;
1261 bfa_ioim_start(hal_io);
1262 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1263
1264 return 0;
1265
1266 out_fail_cmd:
1267 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1268 scsi_dma_unmap(cmnd);
1269 if (done)
1270 done(cmnd);
1271
1272 return 0;
1273 }
1274
1275 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1276
1277 void
1278 bfad_rport_online_wait(struct bfad_s *bfad)
1279 {
1280 int i;
1281 int rport_delay = 10;
1282
1283 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1284 && i < bfa_linkup_delay; i++) {
1285 set_current_state(TASK_UNINTERRUPTIBLE);
1286 schedule_timeout(HZ);
1287 }
1288
1289 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1290 rport_delay = rport_delay < bfa_linkup_delay ?
1291 rport_delay : bfa_linkup_delay;
1292 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1293 && i < rport_delay; i++) {
1294 set_current_state(TASK_UNINTERRUPTIBLE);
1295 schedule_timeout(HZ);
1296 }
1297
1298 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1299 set_current_state(TASK_UNINTERRUPTIBLE);
1300 schedule_timeout(rport_delay * HZ);
1301 }
1302 }
1303 }
1304
1305 int
1306 bfad_get_linkup_delay(struct bfad_s *bfad)
1307 {
1308 u8 nwwns = 0;
1309 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1310 int linkup_delay;
1311
1312 /*
1313 * Querying for the boot target port wwns
1314 * -- read from boot information in flash.
1315 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1316 * else => local boot machine set linkup_delay = 0
1317 */
1318
1319 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1320
1321 if (nwwns > 0)
1322 /* If Boot over SAN set linkup_delay = 30sec */
1323 linkup_delay = 30;
1324 else
1325 /* If local boot; no linkup_delay */
1326 linkup_delay = 0;
1327
1328 return linkup_delay;
1329 }
Kernel DRM miscellaneous fixes and cross-tree changes