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xhci: Add SuperSpeedPlus high bandwidth isoc support to xhci endpoints
[deliverable/linux.git] / drivers / scsi / bfa / bfad_im.c
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 bus and abort all commands.
377 */
378 static int
379 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
380 {
381 struct Scsi_Host *shost = cmnd->device->host;
382 struct bfad_im_port_s *im_port =
383 (struct bfad_im_port_s *) shost->hostdata[0];
384 struct bfad_s *bfad = im_port->bfad;
385 struct bfad_itnim_s *itnim;
386 unsigned long flags;
387 u32 i, rc, err_cnt = 0;
388 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
389 enum bfi_tskim_status task_status;
390
391 spin_lock_irqsave(&bfad->bfad_lock, flags);
392 for (i = 0; i < MAX_FCP_TARGET; i++) {
393 itnim = bfad_get_itnim(im_port, i);
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 err_cnt++;
399 continue;
400 }
401
402 /* wait target reset to complete */
403 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
404 wait_event(wq, test_bit(IO_DONE_BIT,
405 (unsigned long *)&cmnd->SCp.Status));
406 spin_lock_irqsave(&bfad->bfad_lock, flags);
407
408 task_status = cmnd->SCp.Status >> 1;
409 if (task_status != BFI_TSKIM_STS_OK) {
410 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
411 "target reset failure,"
412 " status: %d\n", task_status);
413 err_cnt++;
414 }
415 }
416 }
417 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
418
419 if (err_cnt)
420 return FAILED;
421
422 return SUCCESS;
423 }
424
425 /*
426 * Scsi_Host template entry slave_destroy.
427 */
428 static void
429 bfad_im_slave_destroy(struct scsi_device *sdev)
430 {
431 sdev->hostdata = NULL;
432 return;
433 }
434
435 /*
436 * BFA FCS itnim callbacks
437 */
438
439 /*
440 * BFA FCS itnim alloc callback, after successful PRLI
441 * Context: Interrupt
442 */
443 void
444 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
445 struct bfad_itnim_s **itnim_drv)
446 {
447 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
448 if (*itnim_drv == NULL)
449 return;
450
451 (*itnim_drv)->im = bfad->im;
452 *itnim = &(*itnim_drv)->fcs_itnim;
453 (*itnim_drv)->state = ITNIM_STATE_NONE;
454
455 /*
456 * Initiaze the itnim_work
457 */
458 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
459 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
460 }
461
462 /*
463 * BFA FCS itnim free callback.
464 * Context: Interrupt. bfad_lock is held
465 */
466 void
467 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
468 {
469 struct bfad_port_s *port;
470 wwn_t wwpn;
471 u32 fcid;
472 char wwpn_str[32], fcid_str[16];
473 struct bfad_im_s *im = itnim_drv->im;
474
475 /* online to free state transtion should not happen */
476 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
477
478 itnim_drv->queue_work = 1;
479 /* offline request is not yet done, use the same request to free */
480 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
481 itnim_drv->queue_work = 0;
482
483 itnim_drv->state = ITNIM_STATE_FREE;
484 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
485 itnim_drv->im_port = port->im_port;
486 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
487 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
488 wwn2str(wwpn_str, wwpn);
489 fcid2str(fcid_str, fcid);
490 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
491 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
492 port->im_port->shost->host_no,
493 fcid_str, wwpn_str);
494
495 /* ITNIM processing */
496 if (itnim_drv->queue_work)
497 queue_work(im->drv_workq, &itnim_drv->itnim_work);
498 }
499
500 /*
501 * BFA FCS itnim online callback.
502 * Context: Interrupt. bfad_lock is held
503 */
504 void
505 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
506 {
507 struct bfad_port_s *port;
508 struct bfad_im_s *im = itnim_drv->im;
509
510 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
511 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
512 itnim_drv->state = ITNIM_STATE_ONLINE;
513 itnim_drv->queue_work = 1;
514 itnim_drv->im_port = port->im_port;
515
516 /* ITNIM processing */
517 if (itnim_drv->queue_work)
518 queue_work(im->drv_workq, &itnim_drv->itnim_work);
519 }
520
521 /*
522 * BFA FCS itnim offline callback.
523 * Context: Interrupt. bfad_lock is held
524 */
525 void
526 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
527 {
528 struct bfad_port_s *port;
529 struct bfad_s *bfad;
530 struct bfad_im_s *im = itnim_drv->im;
531
532 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
533 bfad = port->bfad;
534 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
535 (port->flags & BFAD_PORT_DELETE)) {
536 itnim_drv->state = ITNIM_STATE_OFFLINE;
537 return;
538 }
539 itnim_drv->im_port = port->im_port;
540 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
541 itnim_drv->queue_work = 1;
542
543 /* ITNIM processing */
544 if (itnim_drv->queue_work)
545 queue_work(im->drv_workq, &itnim_drv->itnim_work);
546 }
547
548 /*
549 * Allocate a Scsi_Host for a port.
550 */
551 int
552 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
553 struct device *dev)
554 {
555 int error = 1;
556
557 mutex_lock(&bfad_mutex);
558 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
559 if (error < 0) {
560 mutex_unlock(&bfad_mutex);
561 printk(KERN_WARNING "idr_alloc failure\n");
562 goto out;
563 }
564 im_port->idr_id = error;
565 mutex_unlock(&bfad_mutex);
566
567 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
568 if (!im_port->shost) {
569 error = 1;
570 goto out_free_idr;
571 }
572
573 im_port->shost->hostdata[0] = (unsigned long)im_port;
574 im_port->shost->unique_id = im_port->idr_id;
575 im_port->shost->this_id = -1;
576 im_port->shost->max_id = MAX_FCP_TARGET;
577 im_port->shost->max_lun = MAX_FCP_LUN;
578 im_port->shost->max_cmd_len = 16;
579 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
580 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
581 im_port->shost->transportt = bfad_im_scsi_transport_template;
582 else
583 im_port->shost->transportt =
584 bfad_im_scsi_vport_transport_template;
585
586 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
587 if (error) {
588 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
589 goto out_fc_rel;
590 }
591
592 return 0;
593
594 out_fc_rel:
595 scsi_host_put(im_port->shost);
596 im_port->shost = NULL;
597 out_free_idr:
598 mutex_lock(&bfad_mutex);
599 idr_remove(&bfad_im_port_index, im_port->idr_id);
600 mutex_unlock(&bfad_mutex);
601 out:
602 return error;
603 }
604
605 void
606 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
607 {
608 bfa_trc(bfad, bfad->inst_no);
609 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
610 im_port->shost->host_no);
611
612 fc_remove_host(im_port->shost);
613
614 scsi_remove_host(im_port->shost);
615 scsi_host_put(im_port->shost);
616
617 mutex_lock(&bfad_mutex);
618 idr_remove(&bfad_im_port_index, im_port->idr_id);
619 mutex_unlock(&bfad_mutex);
620 }
621
622 static void
623 bfad_im_port_delete_handler(struct work_struct *work)
624 {
625 struct bfad_im_port_s *im_port =
626 container_of(work, struct bfad_im_port_s, port_delete_work);
627
628 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
629 im_port->flags |= BFAD_PORT_DELETE;
630 fc_vport_terminate(im_port->fc_vport);
631 }
632 }
633
634 bfa_status_t
635 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
636 {
637 int rc = BFA_STATUS_OK;
638 struct bfad_im_port_s *im_port;
639
640 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
641 if (im_port == NULL) {
642 rc = BFA_STATUS_ENOMEM;
643 goto ext;
644 }
645 port->im_port = im_port;
646 im_port->port = port;
647 im_port->bfad = bfad;
648
649 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
650 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
651 INIT_LIST_HEAD(&im_port->binding_list);
652
653 ext:
654 return rc;
655 }
656
657 void
658 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
659 {
660 struct bfad_im_port_s *im_port = port->im_port;
661
662 queue_work(bfad->im->drv_workq,
663 &im_port->port_delete_work);
664 }
665
666 void
667 bfad_im_port_clean(struct bfad_im_port_s *im_port)
668 {
669 struct bfad_fcp_binding *bp, *bp_new;
670 unsigned long flags;
671 struct bfad_s *bfad = im_port->bfad;
672
673 spin_lock_irqsave(&bfad->bfad_lock, flags);
674 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
675 list_entry) {
676 list_del(&bp->list_entry);
677 kfree(bp);
678 }
679
680 /* the itnim_mapped_list must be empty at this time */
681 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
682
683 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
684 }
685
686 static void bfad_aen_im_notify_handler(struct work_struct *work)
687 {
688 struct bfad_im_s *im =
689 container_of(work, struct bfad_im_s, aen_im_notify_work);
690 struct bfa_aen_entry_s *aen_entry;
691 struct bfad_s *bfad = im->bfad;
692 struct Scsi_Host *shost = bfad->pport.im_port->shost;
693 void *event_data;
694 unsigned long flags;
695
696 while (!list_empty(&bfad->active_aen_q)) {
697 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
698 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
699 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
700 event_data = (char *)aen_entry + sizeof(struct list_head);
701 fc_host_post_vendor_event(shost, fc_get_event_number(),
702 sizeof(struct bfa_aen_entry_s) -
703 sizeof(struct list_head),
704 (char *)event_data, BFAD_NL_VENDOR_ID);
705 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
706 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
707 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
708 }
709 }
710
711 bfa_status_t
712 bfad_im_probe(struct bfad_s *bfad)
713 {
714 struct bfad_im_s *im;
715
716 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
717 if (im == NULL)
718 return BFA_STATUS_ENOMEM;
719
720 bfad->im = im;
721 im->bfad = bfad;
722
723 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
724 kfree(im);
725 return BFA_STATUS_FAILED;
726 }
727
728 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
729 return BFA_STATUS_OK;
730 }
731
732 void
733 bfad_im_probe_undo(struct bfad_s *bfad)
734 {
735 if (bfad->im) {
736 bfad_destroy_workq(bfad->im);
737 kfree(bfad->im);
738 bfad->im = NULL;
739 }
740 }
741
742 struct Scsi_Host *
743 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
744 {
745 struct scsi_host_template *sht;
746
747 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
748 sht = &bfad_im_scsi_host_template;
749 else
750 sht = &bfad_im_vport_template;
751
752 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
753 sht->max_sectors = max_xfer_size << 1;
754
755 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
756
757 return scsi_host_alloc(sht, sizeof(unsigned long));
758 }
759
760 void
761 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
762 {
763 if (!(im_port->flags & BFAD_PORT_DELETE))
764 flush_workqueue(bfad->im->drv_workq);
765 bfad_im_scsi_host_free(im_port->bfad, im_port);
766 bfad_im_port_clean(im_port);
767 kfree(im_port);
768 }
769
770 void
771 bfad_destroy_workq(struct bfad_im_s *im)
772 {
773 if (im && im->drv_workq) {
774 flush_workqueue(im->drv_workq);
775 destroy_workqueue(im->drv_workq);
776 im->drv_workq = NULL;
777 }
778 }
779
780 bfa_status_t
781 bfad_thread_workq(struct bfad_s *bfad)
782 {
783 struct bfad_im_s *im = bfad->im;
784
785 bfa_trc(bfad, 0);
786 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
787 bfad->inst_no);
788 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
789 if (!im->drv_workq)
790 return BFA_STATUS_FAILED;
791
792 return BFA_STATUS_OK;
793 }
794
795 /*
796 * Scsi_Host template entry.
797 *
798 * Description:
799 * OS entry point to adjust the queue_depths on a per-device basis.
800 * Called once per device during the bus scan.
801 * Return non-zero if fails.
802 */
803 static int
804 bfad_im_slave_configure(struct scsi_device *sdev)
805 {
806 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
807 return 0;
808 }
809
810 struct scsi_host_template bfad_im_scsi_host_template = {
811 .module = THIS_MODULE,
812 .name = BFAD_DRIVER_NAME,
813 .info = bfad_im_info,
814 .queuecommand = bfad_im_queuecommand,
815 .eh_abort_handler = bfad_im_abort_handler,
816 .eh_device_reset_handler = bfad_im_reset_lun_handler,
817 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
818
819 .slave_alloc = bfad_im_slave_alloc,
820 .slave_configure = bfad_im_slave_configure,
821 .slave_destroy = bfad_im_slave_destroy,
822
823 .this_id = -1,
824 .sg_tablesize = BFAD_IO_MAX_SGE,
825 .cmd_per_lun = 3,
826 .use_clustering = ENABLE_CLUSTERING,
827 .shost_attrs = bfad_im_host_attrs,
828 .max_sectors = BFAD_MAX_SECTORS,
829 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
830 };
831
832 struct scsi_host_template bfad_im_vport_template = {
833 .module = THIS_MODULE,
834 .name = BFAD_DRIVER_NAME,
835 .info = bfad_im_info,
836 .queuecommand = bfad_im_queuecommand,
837 .eh_abort_handler = bfad_im_abort_handler,
838 .eh_device_reset_handler = bfad_im_reset_lun_handler,
839 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
840
841 .slave_alloc = bfad_im_slave_alloc,
842 .slave_configure = bfad_im_slave_configure,
843 .slave_destroy = bfad_im_slave_destroy,
844
845 .this_id = -1,
846 .sg_tablesize = BFAD_IO_MAX_SGE,
847 .cmd_per_lun = 3,
848 .use_clustering = ENABLE_CLUSTERING,
849 .shost_attrs = bfad_im_vport_attrs,
850 .max_sectors = BFAD_MAX_SECTORS,
851 };
852
853 bfa_status_t
854 bfad_im_module_init(void)
855 {
856 bfad_im_scsi_transport_template =
857 fc_attach_transport(&bfad_im_fc_function_template);
858 if (!bfad_im_scsi_transport_template)
859 return BFA_STATUS_ENOMEM;
860
861 bfad_im_scsi_vport_transport_template =
862 fc_attach_transport(&bfad_im_vport_fc_function_template);
863 if (!bfad_im_scsi_vport_transport_template) {
864 fc_release_transport(bfad_im_scsi_transport_template);
865 return BFA_STATUS_ENOMEM;
866 }
867
868 return BFA_STATUS_OK;
869 }
870
871 void
872 bfad_im_module_exit(void)
873 {
874 if (bfad_im_scsi_transport_template)
875 fc_release_transport(bfad_im_scsi_transport_template);
876
877 if (bfad_im_scsi_vport_transport_template)
878 fc_release_transport(bfad_im_scsi_vport_transport_template);
879
880 idr_destroy(&bfad_im_port_index);
881 }
882
883 void
884 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
885 {
886 struct scsi_device *tmp_sdev;
887
888 if (((jiffies - itnim->last_ramp_up_time) >
889 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
890 ((jiffies - itnim->last_queue_full_time) >
891 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
892 shost_for_each_device(tmp_sdev, sdev->host) {
893 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
894 if (tmp_sdev->id != sdev->id)
895 continue;
896 scsi_change_queue_depth(tmp_sdev,
897 tmp_sdev->queue_depth + 1);
898
899 itnim->last_ramp_up_time = jiffies;
900 }
901 }
902 }
903 }
904
905 void
906 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
907 {
908 struct scsi_device *tmp_sdev;
909
910 itnim->last_queue_full_time = jiffies;
911
912 shost_for_each_device(tmp_sdev, sdev->host) {
913 if (tmp_sdev->id != sdev->id)
914 continue;
915 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
916 }
917 }
918
919 struct bfad_itnim_s *
920 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
921 {
922 struct bfad_itnim_s *itnim = NULL;
923
924 /* Search the mapped list for this target ID */
925 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
926 if (id == itnim->scsi_tgt_id)
927 return itnim;
928 }
929
930 return NULL;
931 }
932
933 /*
934 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
935 * Has the logic to query the LUN Mask database to check if this LUN needs to
936 * be made visible to the SCSI mid-layer or not.
937 *
938 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
939 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
940 */
941 static int
942 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
943 struct fc_rport *rport)
944 {
945 struct bfad_itnim_data_s *itnim_data =
946 (struct bfad_itnim_data_s *) rport->dd_data;
947 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
948 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
949 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
950 int i = 0, ret = -ENXIO;
951
952 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
953 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
954 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
955 lun_list[i].rp_tag == bfa_rport->rport_tag &&
956 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
957 ret = BFA_STATUS_OK;
958 break;
959 }
960 }
961 return ret;
962 }
963
964 /*
965 * Scsi_Host template entry slave_alloc
966 */
967 static int
968 bfad_im_slave_alloc(struct scsi_device *sdev)
969 {
970 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
971 struct bfad_itnim_data_s *itnim_data;
972 struct bfa_s *bfa;
973
974 if (!rport || fc_remote_port_chkready(rport))
975 return -ENXIO;
976
977 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
978 bfa = itnim_data->itnim->bfa_itnim->bfa;
979
980 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
981 /*
982 * We should not mask LUN 0 - since this will translate
983 * to no LUN / TARGET for SCSI ml resulting no scan.
984 */
985 if (sdev->lun == 0) {
986 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
987 BLIST_SPARSELUN;
988 goto done;
989 }
990
991 /*
992 * Query LUN Mask configuration - to expose this LUN
993 * to the SCSI mid-layer or to mask it.
994 */
995 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
996 BFA_STATUS_OK)
997 return -ENXIO;
998 }
999 done:
1000 sdev->hostdata = rport->dd_data;
1001
1002 return 0;
1003 }
1004
1005 u32
1006 bfad_im_supported_speeds(struct bfa_s *bfa)
1007 {
1008 struct bfa_ioc_attr_s *ioc_attr;
1009 u32 supported_speed = 0;
1010
1011 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1012 if (!ioc_attr)
1013 return 0;
1014
1015 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1016 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1017 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1018 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1019 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1020 if (ioc_attr->adapter_attr.is_mezz) {
1021 supported_speed |= FC_PORTSPEED_8GBIT |
1022 FC_PORTSPEED_4GBIT |
1023 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1024 } else {
1025 supported_speed |= FC_PORTSPEED_8GBIT |
1026 FC_PORTSPEED_4GBIT |
1027 FC_PORTSPEED_2GBIT;
1028 }
1029 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1030 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1031 FC_PORTSPEED_1GBIT;
1032 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1033 supported_speed |= FC_PORTSPEED_10GBIT;
1034 }
1035 kfree(ioc_attr);
1036 return supported_speed;
1037 }
1038
1039 void
1040 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1041 {
1042 struct Scsi_Host *host = im_port->shost;
1043 struct bfad_s *bfad = im_port->bfad;
1044 struct bfad_port_s *port = im_port->port;
1045 char symname[BFA_SYMNAME_MAXLEN];
1046 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1047
1048 fc_host_node_name(host) =
1049 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1050 fc_host_port_name(host) =
1051 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1052 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1053
1054 fc_host_supported_classes(host) = FC_COS_CLASS3;
1055
1056 memset(fc_host_supported_fc4s(host), 0,
1057 sizeof(fc_host_supported_fc4s(host)));
1058 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1059 /* For FCP type 0x08 */
1060 fc_host_supported_fc4s(host)[2] = 1;
1061 /* For fibre channel services type 0x20 */
1062 fc_host_supported_fc4s(host)[7] = 1;
1063
1064 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1065 BFA_SYMNAME_MAXLEN);
1066 sprintf(fc_host_symbolic_name(host), "%s", symname);
1067
1068 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1069 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1070 }
1071
1072 static void
1073 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1074 {
1075 struct fc_rport_identifiers rport_ids;
1076 struct fc_rport *fc_rport;
1077 struct bfad_itnim_data_s *itnim_data;
1078
1079 rport_ids.node_name =
1080 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1081 rport_ids.port_name =
1082 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1083 rport_ids.port_id =
1084 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1085 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1086
1087 itnim->fc_rport = fc_rport =
1088 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1089
1090 if (!fc_rport)
1091 return;
1092
1093 fc_rport->maxframe_size =
1094 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1095 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1096
1097 itnim_data = fc_rport->dd_data;
1098 itnim_data->itnim = itnim;
1099
1100 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1101
1102 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1103 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1104
1105 if ((fc_rport->scsi_target_id != -1)
1106 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1107 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1108
1109 itnim->channel = fc_rport->channel;
1110
1111 return;
1112 }
1113
1114 /*
1115 * Work queue handler using FC transport service
1116 * Context: kernel
1117 */
1118 static void
1119 bfad_im_itnim_work_handler(struct work_struct *work)
1120 {
1121 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1122 itnim_work);
1123 struct bfad_im_s *im = itnim->im;
1124 struct bfad_s *bfad = im->bfad;
1125 struct bfad_im_port_s *im_port;
1126 unsigned long flags;
1127 struct fc_rport *fc_rport;
1128 wwn_t wwpn;
1129 u32 fcid;
1130 char wwpn_str[32], fcid_str[16];
1131
1132 spin_lock_irqsave(&bfad->bfad_lock, flags);
1133 im_port = itnim->im_port;
1134 bfa_trc(bfad, itnim->state);
1135 switch (itnim->state) {
1136 case ITNIM_STATE_ONLINE:
1137 if (!itnim->fc_rport) {
1138 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1139 bfad_im_fc_rport_add(im_port, itnim);
1140 spin_lock_irqsave(&bfad->bfad_lock, flags);
1141 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1142 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1143 wwn2str(wwpn_str, wwpn);
1144 fcid2str(fcid_str, fcid);
1145 list_add_tail(&itnim->list_entry,
1146 &im_port->itnim_mapped_list);
1147 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1148 "ITNIM ONLINE Target: %d:0:%d "
1149 "FCID: %s WWPN: %s\n",
1150 im_port->shost->host_no,
1151 itnim->scsi_tgt_id,
1152 fcid_str, wwpn_str);
1153 } else {
1154 printk(KERN_WARNING
1155 "%s: itnim %llx is already in online state\n",
1156 __func__,
1157 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1158 }
1159
1160 break;
1161 case ITNIM_STATE_OFFLINE_PENDING:
1162 itnim->state = ITNIM_STATE_OFFLINE;
1163 if (itnim->fc_rport) {
1164 fc_rport = itnim->fc_rport;
1165 ((struct bfad_itnim_data_s *)
1166 fc_rport->dd_data)->itnim = NULL;
1167 itnim->fc_rport = NULL;
1168 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1169 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1170 fc_rport->dev_loss_tmo =
1171 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1172 fc_remote_port_delete(fc_rport);
1173 spin_lock_irqsave(&bfad->bfad_lock, flags);
1174 }
1175 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1176 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1177 wwn2str(wwpn_str, wwpn);
1178 fcid2str(fcid_str, fcid);
1179 list_del(&itnim->list_entry);
1180 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1181 "ITNIM OFFLINE Target: %d:0:%d "
1182 "FCID: %s WWPN: %s\n",
1183 im_port->shost->host_no,
1184 itnim->scsi_tgt_id,
1185 fcid_str, wwpn_str);
1186 }
1187 break;
1188 case ITNIM_STATE_FREE:
1189 if (itnim->fc_rport) {
1190 fc_rport = itnim->fc_rport;
1191 ((struct bfad_itnim_data_s *)
1192 fc_rport->dd_data)->itnim = NULL;
1193 itnim->fc_rport = NULL;
1194 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1195 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1196 fc_rport->dev_loss_tmo =
1197 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1198 fc_remote_port_delete(fc_rport);
1199 spin_lock_irqsave(&bfad->bfad_lock, flags);
1200 }
1201 list_del(&itnim->list_entry);
1202 }
1203
1204 kfree(itnim);
1205 break;
1206 default:
1207 WARN_ON(1);
1208 break;
1209 }
1210
1211 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1212 }
1213
1214 /*
1215 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1216 */
1217 static int
1218 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1219 {
1220 struct bfad_im_port_s *im_port =
1221 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1222 struct bfad_s *bfad = im_port->bfad;
1223 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1224 struct bfad_itnim_s *itnim;
1225 struct bfa_ioim_s *hal_io;
1226 unsigned long flags;
1227 int rc;
1228 int sg_cnt = 0;
1229 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1230
1231 rc = fc_remote_port_chkready(rport);
1232 if (rc) {
1233 cmnd->result = rc;
1234 done(cmnd);
1235 return 0;
1236 }
1237
1238 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1239 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1240 cmnd->result = DID_NO_CONNECT << 16;
1241 else
1242 cmnd->result = DID_REQUEUE << 16;
1243 done(cmnd);
1244 return 0;
1245 }
1246
1247 sg_cnt = scsi_dma_map(cmnd);
1248 if (sg_cnt < 0)
1249 return SCSI_MLQUEUE_HOST_BUSY;
1250
1251 cmnd->scsi_done = done;
1252
1253 spin_lock_irqsave(&bfad->bfad_lock, flags);
1254 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1255 printk(KERN_WARNING
1256 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1257 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1258 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1259 goto out_fail_cmd;
1260 }
1261
1262
1263 itnim = itnim_data->itnim;
1264 if (!itnim) {
1265 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1266 goto out_fail_cmd;
1267 }
1268
1269 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1270 itnim->bfa_itnim, sg_cnt);
1271 if (!hal_io) {
1272 printk(KERN_WARNING "hal_io failure\n");
1273 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1274 scsi_dma_unmap(cmnd);
1275 return SCSI_MLQUEUE_HOST_BUSY;
1276 }
1277
1278 cmnd->host_scribble = (char *)hal_io;
1279 bfa_ioim_start(hal_io);
1280 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1281
1282 return 0;
1283
1284 out_fail_cmd:
1285 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1286 scsi_dma_unmap(cmnd);
1287 if (done)
1288 done(cmnd);
1289
1290 return 0;
1291 }
1292
1293 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1294
1295 void
1296 bfad_rport_online_wait(struct bfad_s *bfad)
1297 {
1298 int i;
1299 int rport_delay = 10;
1300
1301 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1302 && i < bfa_linkup_delay; i++) {
1303 set_current_state(TASK_UNINTERRUPTIBLE);
1304 schedule_timeout(HZ);
1305 }
1306
1307 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1308 rport_delay = rport_delay < bfa_linkup_delay ?
1309 rport_delay : bfa_linkup_delay;
1310 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1311 && i < rport_delay; i++) {
1312 set_current_state(TASK_UNINTERRUPTIBLE);
1313 schedule_timeout(HZ);
1314 }
1315
1316 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1317 set_current_state(TASK_UNINTERRUPTIBLE);
1318 schedule_timeout(rport_delay * HZ);
1319 }
1320 }
1321 }
1322
1323 int
1324 bfad_get_linkup_delay(struct bfad_s *bfad)
1325 {
1326 u8 nwwns = 0;
1327 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1328 int linkup_delay;
1329
1330 /*
1331 * Querying for the boot target port wwns
1332 * -- read from boot information in flash.
1333 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1334 * else => local boot machine set linkup_delay = 0
1335 */
1336
1337 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1338
1339 if (nwwns > 0)
1340 /* If Boot over SAN set linkup_delay = 30sec */
1341 linkup_delay = 30;
1342 else
1343 /* If local boot; no linkup_delay */
1344 linkup_delay = 0;
1345
1346 return linkup_delay;
1347 }
Linux kernel - Deliverables
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