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Merge tag 'ceph-for-4.13-rc8' of git://github.com/ceph/ceph-client
[linux/fpc-iii.git] / drivers / scsi / bfa / bfad_im.c
blob7eb0eef18fddfe8fed96f8d7a058146b2c85def3
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 int
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 -ENOMEM;
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 return 0;
461 }
462
463 /*
464 * BFA FCS itnim free callback.
465 * Context: Interrupt. bfad_lock is held
466 */
467 void
468 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
469 {
470 struct bfad_port_s *port;
471 wwn_t wwpn;
472 u32 fcid;
473 char wwpn_str[32], fcid_str[16];
474 struct bfad_im_s *im = itnim_drv->im;
475
476 /* online to free state transtion should not happen */
477 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
478
479 itnim_drv->queue_work = 1;
480 /* offline request is not yet done, use the same request to free */
481 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
482 itnim_drv->queue_work = 0;
483
484 itnim_drv->state = ITNIM_STATE_FREE;
485 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
486 itnim_drv->im_port = port->im_port;
487 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
488 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
489 wwn2str(wwpn_str, wwpn);
490 fcid2str(fcid_str, fcid);
491 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
492 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
493 port->im_port->shost->host_no,
494 fcid_str, wwpn_str);
495
496 /* ITNIM processing */
497 if (itnim_drv->queue_work)
498 queue_work(im->drv_workq, &itnim_drv->itnim_work);
499 }
500
501 /*
502 * BFA FCS itnim online callback.
503 * Context: Interrupt. bfad_lock is held
504 */
505 void
506 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
507 {
508 struct bfad_port_s *port;
509 struct bfad_im_s *im = itnim_drv->im;
510
511 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
512 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
513 itnim_drv->state = ITNIM_STATE_ONLINE;
514 itnim_drv->queue_work = 1;
515 itnim_drv->im_port = port->im_port;
516
517 /* ITNIM processing */
518 if (itnim_drv->queue_work)
519 queue_work(im->drv_workq, &itnim_drv->itnim_work);
520 }
521
522 /*
523 * BFA FCS itnim offline callback.
524 * Context: Interrupt. bfad_lock is held
525 */
526 void
527 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
528 {
529 struct bfad_port_s *port;
530 struct bfad_s *bfad;
531 struct bfad_im_s *im = itnim_drv->im;
532
533 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
534 bfad = port->bfad;
535 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
536 (port->flags & BFAD_PORT_DELETE)) {
537 itnim_drv->state = ITNIM_STATE_OFFLINE;
538 return;
539 }
540 itnim_drv->im_port = port->im_port;
541 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
542 itnim_drv->queue_work = 1;
543
544 /* ITNIM processing */
545 if (itnim_drv->queue_work)
546 queue_work(im->drv_workq, &itnim_drv->itnim_work);
547 }
548
549 /*
550 * Allocate a Scsi_Host for a port.
551 */
552 int
553 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
554 struct device *dev)
555 {
556 int error = 1;
557
558 mutex_lock(&bfad_mutex);
559 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
560 if (error < 0) {
561 mutex_unlock(&bfad_mutex);
562 printk(KERN_WARNING "idr_alloc failure\n");
563 goto out;
564 }
565 im_port->idr_id = error;
566 mutex_unlock(&bfad_mutex);
567
568 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
569 if (!im_port->shost) {
570 error = 1;
571 goto out_free_idr;
572 }
573
574 im_port->shost->hostdata[0] = (unsigned long)im_port;
575 im_port->shost->unique_id = im_port->idr_id;
576 im_port->shost->this_id = -1;
577 im_port->shost->max_id = MAX_FCP_TARGET;
578 im_port->shost->max_lun = MAX_FCP_LUN;
579 im_port->shost->max_cmd_len = 16;
580 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
581 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
582 im_port->shost->transportt = bfad_im_scsi_transport_template;
583 else
584 im_port->shost->transportt =
585 bfad_im_scsi_vport_transport_template;
586
587 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
588 if (error) {
589 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
590 goto out_fc_rel;
591 }
592
593 return 0;
594
595 out_fc_rel:
596 scsi_host_put(im_port->shost);
597 im_port->shost = NULL;
598 out_free_idr:
599 mutex_lock(&bfad_mutex);
600 idr_remove(&bfad_im_port_index, im_port->idr_id);
601 mutex_unlock(&bfad_mutex);
602 out:
603 return error;
604 }
605
606 void
607 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
608 {
609 bfa_trc(bfad, bfad->inst_no);
610 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
611 im_port->shost->host_no);
612
613 fc_remove_host(im_port->shost);
614
615 scsi_remove_host(im_port->shost);
616 scsi_host_put(im_port->shost);
617
618 mutex_lock(&bfad_mutex);
619 idr_remove(&bfad_im_port_index, im_port->idr_id);
620 mutex_unlock(&bfad_mutex);
621 }
622
623 static void
624 bfad_im_port_delete_handler(struct work_struct *work)
625 {
626 struct bfad_im_port_s *im_port =
627 container_of(work, struct bfad_im_port_s, port_delete_work);
628
629 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
630 im_port->flags |= BFAD_PORT_DELETE;
631 fc_vport_terminate(im_port->fc_vport);
632 }
633 }
634
635 bfa_status_t
636 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
637 {
638 int rc = BFA_STATUS_OK;
639 struct bfad_im_port_s *im_port;
640
641 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
642 if (im_port == NULL) {
643 rc = BFA_STATUS_ENOMEM;
644 goto ext;
645 }
646 port->im_port = im_port;
647 im_port->port = port;
648 im_port->bfad = bfad;
649
650 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
651 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
652 INIT_LIST_HEAD(&im_port->binding_list);
653
654 ext:
655 return rc;
656 }
657
658 void
659 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
660 {
661 struct bfad_im_port_s *im_port = port->im_port;
662
663 queue_work(bfad->im->drv_workq,
664 &im_port->port_delete_work);
665 }
666
667 void
668 bfad_im_port_clean(struct bfad_im_port_s *im_port)
669 {
670 struct bfad_fcp_binding *bp, *bp_new;
671 unsigned long flags;
672 struct bfad_s *bfad = im_port->bfad;
673
674 spin_lock_irqsave(&bfad->bfad_lock, flags);
675 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
676 list_entry) {
677 list_del(&bp->list_entry);
678 kfree(bp);
679 }
680
681 /* the itnim_mapped_list must be empty at this time */
682 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
683
684 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
685 }
686
687 static void bfad_aen_im_notify_handler(struct work_struct *work)
688 {
689 struct bfad_im_s *im =
690 container_of(work, struct bfad_im_s, aen_im_notify_work);
691 struct bfa_aen_entry_s *aen_entry;
692 struct bfad_s *bfad = im->bfad;
693 struct Scsi_Host *shost = bfad->pport.im_port->shost;
694 void *event_data;
695 unsigned long flags;
696
697 while (!list_empty(&bfad->active_aen_q)) {
698 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
699 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
700 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
701 event_data = (char *)aen_entry + sizeof(struct list_head);
702 fc_host_post_vendor_event(shost, fc_get_event_number(),
703 sizeof(struct bfa_aen_entry_s) -
704 sizeof(struct list_head),
705 (char *)event_data, BFAD_NL_VENDOR_ID);
706 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
707 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
708 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
709 }
710 }
711
712 bfa_status_t
713 bfad_im_probe(struct bfad_s *bfad)
714 {
715 struct bfad_im_s *im;
716
717 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
718 if (im == NULL)
719 return BFA_STATUS_ENOMEM;
720
721 bfad->im = im;
722 im->bfad = bfad;
723
724 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
725 kfree(im);
726 return BFA_STATUS_FAILED;
727 }
728
729 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
730 return BFA_STATUS_OK;
731 }
732
733 void
734 bfad_im_probe_undo(struct bfad_s *bfad)
735 {
736 if (bfad->im) {
737 bfad_destroy_workq(bfad->im);
738 kfree(bfad->im);
739 bfad->im = NULL;
740 }
741 }
742
743 struct Scsi_Host *
744 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
745 {
746 struct scsi_host_template *sht;
747
748 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
749 sht = &bfad_im_scsi_host_template;
750 else
751 sht = &bfad_im_vport_template;
752
753 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
754 sht->max_sectors = max_xfer_size << 1;
755
756 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
757
758 return scsi_host_alloc(sht, sizeof(unsigned long));
759 }
760
761 void
762 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
763 {
764 if (!(im_port->flags & BFAD_PORT_DELETE))
765 flush_workqueue(bfad->im->drv_workq);
766 bfad_im_scsi_host_free(im_port->bfad, im_port);
767 bfad_im_port_clean(im_port);
768 kfree(im_port);
769 }
770
771 void
772 bfad_destroy_workq(struct bfad_im_s *im)
773 {
774 if (im && im->drv_workq) {
775 flush_workqueue(im->drv_workq);
776 destroy_workqueue(im->drv_workq);
777 im->drv_workq = NULL;
778 }
779 }
780
781 bfa_status_t
782 bfad_thread_workq(struct bfad_s *bfad)
783 {
784 struct bfad_im_s *im = bfad->im;
785
786 bfa_trc(bfad, 0);
787 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
788 bfad->inst_no);
789 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
790 if (!im->drv_workq)
791 return BFA_STATUS_FAILED;
792
793 return BFA_STATUS_OK;
794 }
795
796 /*
797 * Scsi_Host template entry.
798 *
799 * Description:
800 * OS entry point to adjust the queue_depths on a per-device basis.
801 * Called once per device during the bus scan.
802 * Return non-zero if fails.
803 */
804 static int
805 bfad_im_slave_configure(struct scsi_device *sdev)
806 {
807 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
808 return 0;
809 }
810
811 struct scsi_host_template bfad_im_scsi_host_template = {
812 .module = THIS_MODULE,
813 .name = BFAD_DRIVER_NAME,
814 .info = bfad_im_info,
815 .queuecommand = bfad_im_queuecommand,
816 .eh_timed_out = fc_eh_timed_out,
817 .eh_abort_handler = bfad_im_abort_handler,
818 .eh_device_reset_handler = bfad_im_reset_lun_handler,
819 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
820
821 .slave_alloc = bfad_im_slave_alloc,
822 .slave_configure = bfad_im_slave_configure,
823 .slave_destroy = bfad_im_slave_destroy,
824
825 .this_id = -1,
826 .sg_tablesize = BFAD_IO_MAX_SGE,
827 .cmd_per_lun = 3,
828 .use_clustering = ENABLE_CLUSTERING,
829 .shost_attrs = bfad_im_host_attrs,
830 .max_sectors = BFAD_MAX_SECTORS,
831 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
832 };
833
834 struct scsi_host_template bfad_im_vport_template = {
835 .module = THIS_MODULE,
836 .name = BFAD_DRIVER_NAME,
837 .info = bfad_im_info,
838 .queuecommand = bfad_im_queuecommand,
839 .eh_timed_out = fc_eh_timed_out,
840 .eh_abort_handler = bfad_im_abort_handler,
841 .eh_device_reset_handler = bfad_im_reset_lun_handler,
842 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
843
844 .slave_alloc = bfad_im_slave_alloc,
845 .slave_configure = bfad_im_slave_configure,
846 .slave_destroy = bfad_im_slave_destroy,
847
848 .this_id = -1,
849 .sg_tablesize = BFAD_IO_MAX_SGE,
850 .cmd_per_lun = 3,
851 .use_clustering = ENABLE_CLUSTERING,
852 .shost_attrs = bfad_im_vport_attrs,
853 .max_sectors = BFAD_MAX_SECTORS,
854 };
855
856 bfa_status_t
857 bfad_im_module_init(void)
858 {
859 bfad_im_scsi_transport_template =
860 fc_attach_transport(&bfad_im_fc_function_template);
861 if (!bfad_im_scsi_transport_template)
862 return BFA_STATUS_ENOMEM;
863
864 bfad_im_scsi_vport_transport_template =
865 fc_attach_transport(&bfad_im_vport_fc_function_template);
866 if (!bfad_im_scsi_vport_transport_template) {
867 fc_release_transport(bfad_im_scsi_transport_template);
868 return BFA_STATUS_ENOMEM;
869 }
870
871 return BFA_STATUS_OK;
872 }
873
874 void
875 bfad_im_module_exit(void)
876 {
877 if (bfad_im_scsi_transport_template)
878 fc_release_transport(bfad_im_scsi_transport_template);
879
880 if (bfad_im_scsi_vport_transport_template)
881 fc_release_transport(bfad_im_scsi_vport_transport_template);
882
883 idr_destroy(&bfad_im_port_index);
884 }
885
886 void
887 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
888 {
889 struct scsi_device *tmp_sdev;
890
891 if (((jiffies - itnim->last_ramp_up_time) >
892 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
893 ((jiffies - itnim->last_queue_full_time) >
894 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
895 shost_for_each_device(tmp_sdev, sdev->host) {
896 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
897 if (tmp_sdev->id != sdev->id)
898 continue;
899 scsi_change_queue_depth(tmp_sdev,
900 tmp_sdev->queue_depth + 1);
901
902 itnim->last_ramp_up_time = jiffies;
903 }
904 }
905 }
906 }
907
908 void
909 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
910 {
911 struct scsi_device *tmp_sdev;
912
913 itnim->last_queue_full_time = jiffies;
914
915 shost_for_each_device(tmp_sdev, sdev->host) {
916 if (tmp_sdev->id != sdev->id)
917 continue;
918 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
919 }
920 }
921
922 struct bfad_itnim_s *
923 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
924 {
925 struct bfad_itnim_s *itnim = NULL;
926
927 /* Search the mapped list for this target ID */
928 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
929 if (id == itnim->scsi_tgt_id)
930 return itnim;
931 }
932
933 return NULL;
934 }
935
936 /*
937 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
938 * Has the logic to query the LUN Mask database to check if this LUN needs to
939 * be made visible to the SCSI mid-layer or not.
940 *
941 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
942 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
943 */
944 static int
945 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
946 struct fc_rport *rport)
947 {
948 struct bfad_itnim_data_s *itnim_data =
949 (struct bfad_itnim_data_s *) rport->dd_data;
950 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
951 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
952 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
953 int i = 0, ret = -ENXIO;
954
955 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
956 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
957 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
958 lun_list[i].rp_tag == bfa_rport->rport_tag &&
959 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
960 ret = BFA_STATUS_OK;
961 break;
962 }
963 }
964 return ret;
965 }
966
967 /*
968 * Scsi_Host template entry slave_alloc
969 */
970 static int
971 bfad_im_slave_alloc(struct scsi_device *sdev)
972 {
973 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
974 struct bfad_itnim_data_s *itnim_data;
975 struct bfa_s *bfa;
976
977 if (!rport || fc_remote_port_chkready(rport))
978 return -ENXIO;
979
980 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
981 bfa = itnim_data->itnim->bfa_itnim->bfa;
982
983 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
984 /*
985 * We should not mask LUN 0 - since this will translate
986 * to no LUN / TARGET for SCSI ml resulting no scan.
987 */
988 if (sdev->lun == 0) {
989 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
990 BLIST_SPARSELUN;
991 goto done;
992 }
993
994 /*
995 * Query LUN Mask configuration - to expose this LUN
996 * to the SCSI mid-layer or to mask it.
997 */
998 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
999 BFA_STATUS_OK)
1000 return -ENXIO;
1001 }
1002 done:
1003 sdev->hostdata = rport->dd_data;
1004
1005 return 0;
1006 }
1007
1008 u32
1009 bfad_im_supported_speeds(struct bfa_s *bfa)
1010 {
1011 struct bfa_ioc_attr_s *ioc_attr;
1012 u32 supported_speed = 0;
1013
1014 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1015 if (!ioc_attr)
1016 return 0;
1017
1018 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1019 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1020 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1021 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1022 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1023 if (ioc_attr->adapter_attr.is_mezz) {
1024 supported_speed |= FC_PORTSPEED_8GBIT |
1025 FC_PORTSPEED_4GBIT |
1026 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1027 } else {
1028 supported_speed |= FC_PORTSPEED_8GBIT |
1029 FC_PORTSPEED_4GBIT |
1030 FC_PORTSPEED_2GBIT;
1031 }
1032 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1033 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1034 FC_PORTSPEED_1GBIT;
1035 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1036 supported_speed |= FC_PORTSPEED_10GBIT;
1037 }
1038 kfree(ioc_attr);
1039 return supported_speed;
1040 }
1041
1042 void
1043 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1044 {
1045 struct Scsi_Host *host = im_port->shost;
1046 struct bfad_s *bfad = im_port->bfad;
1047 struct bfad_port_s *port = im_port->port;
1048 char symname[BFA_SYMNAME_MAXLEN];
1049 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1050
1051 fc_host_node_name(host) =
1052 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1053 fc_host_port_name(host) =
1054 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1055 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1056
1057 fc_host_supported_classes(host) = FC_COS_CLASS3;
1058
1059 memset(fc_host_supported_fc4s(host), 0,
1060 sizeof(fc_host_supported_fc4s(host)));
1061 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1062 /* For FCP type 0x08 */
1063 fc_host_supported_fc4s(host)[2] = 1;
1064 /* For fibre channel services type 0x20 */
1065 fc_host_supported_fc4s(host)[7] = 1;
1066
1067 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1068 BFA_SYMNAME_MAXLEN);
1069 sprintf(fc_host_symbolic_name(host), "%s", symname);
1070
1071 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1072 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1073 }
1074
1075 static void
1076 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1077 {
1078 struct fc_rport_identifiers rport_ids;
1079 struct fc_rport *fc_rport;
1080 struct bfad_itnim_data_s *itnim_data;
1081
1082 rport_ids.node_name =
1083 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1084 rport_ids.port_name =
1085 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1086 rport_ids.port_id =
1087 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1088 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1089
1090 itnim->fc_rport = fc_rport =
1091 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1092
1093 if (!fc_rport)
1094 return;
1095
1096 fc_rport->maxframe_size =
1097 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1098 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1099
1100 itnim_data = fc_rport->dd_data;
1101 itnim_data->itnim = itnim;
1102
1103 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1104
1105 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1106 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1107
1108 if ((fc_rport->scsi_target_id != -1)
1109 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1110 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1111
1112 itnim->channel = fc_rport->channel;
1113
1114 return;
1115 }
1116
1117 /*
1118 * Work queue handler using FC transport service
1119 * Context: kernel
1120 */
1121 static void
1122 bfad_im_itnim_work_handler(struct work_struct *work)
1123 {
1124 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1125 itnim_work);
1126 struct bfad_im_s *im = itnim->im;
1127 struct bfad_s *bfad = im->bfad;
1128 struct bfad_im_port_s *im_port;
1129 unsigned long flags;
1130 struct fc_rport *fc_rport;
1131 wwn_t wwpn;
1132 u32 fcid;
1133 char wwpn_str[32], fcid_str[16];
1134
1135 spin_lock_irqsave(&bfad->bfad_lock, flags);
1136 im_port = itnim->im_port;
1137 bfa_trc(bfad, itnim->state);
1138 switch (itnim->state) {
1139 case ITNIM_STATE_ONLINE:
1140 if (!itnim->fc_rport) {
1141 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1142 bfad_im_fc_rport_add(im_port, itnim);
1143 spin_lock_irqsave(&bfad->bfad_lock, flags);
1144 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1145 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1146 wwn2str(wwpn_str, wwpn);
1147 fcid2str(fcid_str, fcid);
1148 list_add_tail(&itnim->list_entry,
1149 &im_port->itnim_mapped_list);
1150 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1151 "ITNIM ONLINE Target: %d:0:%d "
1152 "FCID: %s WWPN: %s\n",
1153 im_port->shost->host_no,
1154 itnim->scsi_tgt_id,
1155 fcid_str, wwpn_str);
1156 } else {
1157 printk(KERN_WARNING
1158 "%s: itnim %llx is already in online state\n",
1159 __func__,
1160 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1161 }
1162
1163 break;
1164 case ITNIM_STATE_OFFLINE_PENDING:
1165 itnim->state = ITNIM_STATE_OFFLINE;
1166 if (itnim->fc_rport) {
1167 fc_rport = itnim->fc_rport;
1168 ((struct bfad_itnim_data_s *)
1169 fc_rport->dd_data)->itnim = NULL;
1170 itnim->fc_rport = NULL;
1171 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1172 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1173 fc_rport->dev_loss_tmo =
1174 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1175 fc_remote_port_delete(fc_rport);
1176 spin_lock_irqsave(&bfad->bfad_lock, flags);
1177 }
1178 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1179 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1180 wwn2str(wwpn_str, wwpn);
1181 fcid2str(fcid_str, fcid);
1182 list_del(&itnim->list_entry);
1183 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1184 "ITNIM OFFLINE Target: %d:0:%d "
1185 "FCID: %s WWPN: %s\n",
1186 im_port->shost->host_no,
1187 itnim->scsi_tgt_id,
1188 fcid_str, wwpn_str);
1189 }
1190 break;
1191 case ITNIM_STATE_FREE:
1192 if (itnim->fc_rport) {
1193 fc_rport = itnim->fc_rport;
1194 ((struct bfad_itnim_data_s *)
1195 fc_rport->dd_data)->itnim = NULL;
1196 itnim->fc_rport = NULL;
1197 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1198 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1199 fc_rport->dev_loss_tmo =
1200 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1201 fc_remote_port_delete(fc_rport);
1202 spin_lock_irqsave(&bfad->bfad_lock, flags);
1203 }
1204 list_del(&itnim->list_entry);
1205 }
1206
1207 kfree(itnim);
1208 break;
1209 default:
1210 WARN_ON(1);
1211 break;
1212 }
1213
1214 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1215 }
1216
1217 /*
1218 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1219 */
1220 static int
1221 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1222 {
1223 struct bfad_im_port_s *im_port =
1224 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1225 struct bfad_s *bfad = im_port->bfad;
1226 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1227 struct bfad_itnim_s *itnim;
1228 struct bfa_ioim_s *hal_io;
1229 unsigned long flags;
1230 int rc;
1231 int sg_cnt = 0;
1232 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1233
1234 rc = fc_remote_port_chkready(rport);
1235 if (rc) {
1236 cmnd->result = rc;
1237 done(cmnd);
1238 return 0;
1239 }
1240
1241 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1242 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1243 cmnd->result = DID_NO_CONNECT << 16;
1244 else
1245 cmnd->result = DID_REQUEUE << 16;
1246 done(cmnd);
1247 return 0;
1248 }
1249
1250 sg_cnt = scsi_dma_map(cmnd);
1251 if (sg_cnt < 0)
1252 return SCSI_MLQUEUE_HOST_BUSY;
1253
1254 cmnd->scsi_done = done;
1255
1256 spin_lock_irqsave(&bfad->bfad_lock, flags);
1257 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1258 printk(KERN_WARNING
1259 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1260 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1261 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1262 goto out_fail_cmd;
1263 }
1264
1265
1266 itnim = itnim_data->itnim;
1267 if (!itnim) {
1268 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1269 goto out_fail_cmd;
1270 }
1271
1272 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1273 itnim->bfa_itnim, sg_cnt);
1274 if (!hal_io) {
1275 printk(KERN_WARNING "hal_io failure\n");
1276 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1277 scsi_dma_unmap(cmnd);
1278 return SCSI_MLQUEUE_HOST_BUSY;
1279 }
1280
1281 cmnd->host_scribble = (char *)hal_io;
1282 bfa_ioim_start(hal_io);
1283 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1284
1285 return 0;
1286
1287 out_fail_cmd:
1288 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1289 scsi_dma_unmap(cmnd);
1290 if (done)
1291 done(cmnd);
1292
1293 return 0;
1294 }
1295
1296 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1297
1298 void
1299 bfad_rport_online_wait(struct bfad_s *bfad)
1300 {
1301 int i;
1302 int rport_delay = 10;
1303
1304 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1305 && i < bfa_linkup_delay; i++) {
1306 set_current_state(TASK_UNINTERRUPTIBLE);
1307 schedule_timeout(HZ);
1308 }
1309
1310 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1311 rport_delay = rport_delay < bfa_linkup_delay ?
1312 rport_delay : bfa_linkup_delay;
1313 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1314 && i < rport_delay; i++) {
1315 set_current_state(TASK_UNINTERRUPTIBLE);
1316 schedule_timeout(HZ);
1317 }
1318
1319 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1320 set_current_state(TASK_UNINTERRUPTIBLE);
1321 schedule_timeout(rport_delay * HZ);
1322 }
1323 }
1324 }
1325
1326 int
1327 bfad_get_linkup_delay(struct bfad_s *bfad)
1328 {
1329 u8 nwwns = 0;
1330 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1331 int linkup_delay;
1332
1333 /*
1334 * Querying for the boot target port wwns
1335 * -- read from boot information in flash.
1336 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1337 * else => local boot machine set linkup_delay = 0
1338 */
1339
1340 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1341
1342 if (nwwns > 0)
1343 /* If Boot over SAN set linkup_delay = 30sec */
1344 linkup_delay = 30;
1345 else
1346 /* If local boot; no linkup_delay */
1347 linkup_delay = 0;
1348
1349 return linkup_delay;
1350 }
Linux with added FPC-III support