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USB: ftdi_sio: Add more identifiers
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / bfa / bfad_im.c
blobe5db649e8eb757dbe79241645c024734d76dd21a
1 /*
2 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
3 * All rights reserved
4 * www.brocade.com
5 *
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License (GPL) Version 2 as
10 * published by the Free Software Foundation
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 */
17
18 /*
19 * bfad_im.c Linux driver IM module.
20 */
21
22 #include <linux/export.h>
23
24 #include "bfad_drv.h"
25 #include "bfad_im.h"
26 #include "bfa_fcs.h"
27
28 BFA_TRC_FILE(LDRV, IM);
29
30 DEFINE_IDR(bfad_im_port_index);
31 struct scsi_transport_template *bfad_im_scsi_transport_template;
32 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
33 static void bfad_im_itnim_work_handler(struct work_struct *work);
34 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
35 static int bfad_im_slave_alloc(struct scsi_device *sdev);
36 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
37 struct bfad_itnim_s *itnim);
38
39 void
40 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
41 enum bfi_ioim_status io_status, u8 scsi_status,
42 int sns_len, u8 *sns_info, s32 residue)
43 {
44 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
45 struct bfad_s *bfad = drv;
46 struct bfad_itnim_data_s *itnim_data;
47 struct bfad_itnim_s *itnim;
48 u8 host_status = DID_OK;
49
50 switch (io_status) {
51 case BFI_IOIM_STS_OK:
52 bfa_trc(bfad, scsi_status);
53 scsi_set_resid(cmnd, 0);
54
55 if (sns_len > 0) {
56 bfa_trc(bfad, sns_len);
57 if (sns_len > SCSI_SENSE_BUFFERSIZE)
58 sns_len = SCSI_SENSE_BUFFERSIZE;
59 memcpy(cmnd->sense_buffer, sns_info, sns_len);
60 }
61
62 if (residue > 0) {
63 bfa_trc(bfad, residue);
64 scsi_set_resid(cmnd, residue);
65 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
66 (scsi_bufflen(cmnd) - residue) <
67 cmnd->underflow) {
68 bfa_trc(bfad, 0);
69 host_status = DID_ERROR;
70 }
71 }
72 cmnd->result = ScsiResult(host_status, scsi_status);
73
74 break;
75
76 case BFI_IOIM_STS_ABORTED:
77 case BFI_IOIM_STS_TIMEDOUT:
78 case BFI_IOIM_STS_PATHTOV:
79 default:
80 host_status = DID_ERROR;
81 cmnd->result = ScsiResult(host_status, 0);
82 }
83
84 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
85 if (cmnd->device->host != NULL)
86 scsi_dma_unmap(cmnd);
87
88 cmnd->host_scribble = NULL;
89 bfa_trc(bfad, cmnd->result);
90
91 itnim_data = cmnd->device->hostdata;
92 if (itnim_data) {
93 itnim = itnim_data->itnim;
94 if (!cmnd->result && itnim &&
95 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
96 /* Queue depth adjustment for good status completion */
97 bfad_ramp_up_qdepth(itnim, cmnd->device);
98 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
99 /* qfull handling */
100 bfad_handle_qfull(itnim, cmnd->device);
101 }
102 }
103
104 cmnd->scsi_done(cmnd);
105 }
106
107 void
108 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
109 {
110 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
111 struct bfad_itnim_data_s *itnim_data;
112 struct bfad_itnim_s *itnim;
113
114 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
115
116 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
117 if (cmnd->device->host != NULL)
118 scsi_dma_unmap(cmnd);
119
120 cmnd->host_scribble = NULL;
121
122 /* Queue depth adjustment */
123 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
124 itnim_data = cmnd->device->hostdata;
125 if (itnim_data) {
126 itnim = itnim_data->itnim;
127 if (itnim)
128 bfad_ramp_up_qdepth(itnim, cmnd->device);
129 }
130 }
131
132 cmnd->scsi_done(cmnd);
133 }
134
135 void
136 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
137 {
138 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
139 struct bfad_s *bfad = drv;
140
141 cmnd->result = ScsiResult(DID_ERROR, 0);
142
143 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
144 if (cmnd->device->host != NULL)
145 scsi_dma_unmap(cmnd);
146
147 bfa_trc(bfad, cmnd->result);
148 cmnd->host_scribble = NULL;
149 }
150
151 void
152 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
153 enum bfi_tskim_status tsk_status)
154 {
155 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
156 wait_queue_head_t *wq;
157
158 cmnd->SCp.Status |= tsk_status << 1;
159 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
160 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
161 cmnd->SCp.ptr = NULL;
162
163 if (wq)
164 wake_up(wq);
165 }
166
167 /*
168 * Scsi_Host_template SCSI host template
169 */
170 /*
171 * Scsi_Host template entry, returns BFAD PCI info.
172 */
173 static const char *
174 bfad_im_info(struct Scsi_Host *shost)
175 {
176 static char bfa_buf[256];
177 struct bfad_im_port_s *im_port =
178 (struct bfad_im_port_s *) shost->hostdata[0];
179 struct bfad_s *bfad = im_port->bfad;
180
181 memset(bfa_buf, 0, sizeof(bfa_buf));
182 snprintf(bfa_buf, sizeof(bfa_buf),
183 "Brocade FC/FCOE Adapter, " "hwpath: %s driver: %s",
184 bfad->pci_name, BFAD_DRIVER_VERSION);
185
186 return bfa_buf;
187 }
188
189 /*
190 * Scsi_Host template entry, aborts the specified SCSI command.
191 *
192 * Returns: SUCCESS or FAILED.
193 */
194 static int
195 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
196 {
197 struct Scsi_Host *shost = cmnd->device->host;
198 struct bfad_im_port_s *im_port =
199 (struct bfad_im_port_s *) shost->hostdata[0];
200 struct bfad_s *bfad = im_port->bfad;
201 struct bfa_ioim_s *hal_io;
202 unsigned long flags;
203 u32 timeout;
204 int rc = FAILED;
205
206 spin_lock_irqsave(&bfad->bfad_lock, flags);
207 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
208 if (!hal_io) {
209 /* IO has been completed, retrun success */
210 rc = SUCCESS;
211 goto out;
212 }
213 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
214 rc = FAILED;
215 goto out;
216 }
217
218 bfa_trc(bfad, hal_io->iotag);
219 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
220 "scsi%d: abort cmnd %p iotag %x\n",
221 im_port->shost->host_no, cmnd, hal_io->iotag);
222 (void) bfa_ioim_abort(hal_io);
223 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
224
225 /* Need to wait until the command get aborted */
226 timeout = 10;
227 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
228 set_current_state(TASK_UNINTERRUPTIBLE);
229 schedule_timeout(timeout);
230 if (timeout < 4 * HZ)
231 timeout *= 2;
232 }
233
234 cmnd->scsi_done(cmnd);
235 bfa_trc(bfad, hal_io->iotag);
236 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
237 "scsi%d: complete abort 0x%p iotag 0x%x\n",
238 im_port->shost->host_no, cmnd, hal_io->iotag);
239 return SUCCESS;
240 out:
241 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
242 return rc;
243 }
244
245 static bfa_status_t
246 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
247 struct bfad_itnim_s *itnim)
248 {
249 struct bfa_tskim_s *tskim;
250 struct bfa_itnim_s *bfa_itnim;
251 bfa_status_t rc = BFA_STATUS_OK;
252 struct scsi_lun scsilun;
253
254 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
255 if (!tskim) {
256 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
257 "target reset, fail to allocate tskim\n");
258 rc = BFA_STATUS_FAILED;
259 goto out;
260 }
261
262 /*
263 * Set host_scribble to NULL to avoid aborting a task command if
264 * happens.
265 */
266 cmnd->host_scribble = NULL;
267 cmnd->SCp.Status = 0;
268 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
269 memset(&scsilun, 0, sizeof(scsilun));
270 bfa_tskim_start(tskim, bfa_itnim, scsilun,
271 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
272 out:
273 return rc;
274 }
275
276 /*
277 * Scsi_Host template entry, resets a LUN and abort its all commands.
278 *
279 * Returns: SUCCESS or FAILED.
280 *
281 */
282 static int
283 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
284 {
285 struct Scsi_Host *shost = cmnd->device->host;
286 struct bfad_im_port_s *im_port =
287 (struct bfad_im_port_s *) shost->hostdata[0];
288 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
289 struct bfad_s *bfad = im_port->bfad;
290 struct bfa_tskim_s *tskim;
291 struct bfad_itnim_s *itnim;
292 struct bfa_itnim_s *bfa_itnim;
293 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
294 int rc = SUCCESS;
295 unsigned long flags;
296 enum bfi_tskim_status task_status;
297 struct scsi_lun scsilun;
298
299 spin_lock_irqsave(&bfad->bfad_lock, flags);
300 itnim = itnim_data->itnim;
301 if (!itnim) {
302 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
303 rc = FAILED;
304 goto out;
305 }
306
307 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
308 if (!tskim) {
309 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
310 "LUN reset, fail to allocate tskim");
311 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
312 rc = FAILED;
313 goto out;
314 }
315
316 /*
317 * Set host_scribble to NULL to avoid aborting a task command
318 * if happens.
319 */
320 cmnd->host_scribble = NULL;
321 cmnd->SCp.ptr = (char *)&wq;
322 cmnd->SCp.Status = 0;
323 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
324 int_to_scsilun(cmnd->device->lun, &scsilun);
325 bfa_tskim_start(tskim, bfa_itnim, scsilun,
326 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
327 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
328
329 wait_event(wq, test_bit(IO_DONE_BIT,
330 (unsigned long *)&cmnd->SCp.Status));
331
332 task_status = cmnd->SCp.Status >> 1;
333 if (task_status != BFI_TSKIM_STS_OK) {
334 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
335 "LUN reset failure, status: %d\n", task_status);
336 rc = FAILED;
337 }
338
339 out:
340 return rc;
341 }
342
343 /*
344 * Scsi_Host template entry, resets the bus and abort all commands.
345 */
346 static int
347 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
348 {
349 struct Scsi_Host *shost = cmnd->device->host;
350 struct bfad_im_port_s *im_port =
351 (struct bfad_im_port_s *) shost->hostdata[0];
352 struct bfad_s *bfad = im_port->bfad;
353 struct bfad_itnim_s *itnim;
354 unsigned long flags;
355 u32 i, rc, err_cnt = 0;
356 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
357 enum bfi_tskim_status task_status;
358
359 spin_lock_irqsave(&bfad->bfad_lock, flags);
360 for (i = 0; i < MAX_FCP_TARGET; i++) {
361 itnim = bfad_get_itnim(im_port, i);
362 if (itnim) {
363 cmnd->SCp.ptr = (char *)&wq;
364 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
365 if (rc != BFA_STATUS_OK) {
366 err_cnt++;
367 continue;
368 }
369
370 /* wait target reset to complete */
371 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
372 wait_event(wq, test_bit(IO_DONE_BIT,
373 (unsigned long *)&cmnd->SCp.Status));
374 spin_lock_irqsave(&bfad->bfad_lock, flags);
375
376 task_status = cmnd->SCp.Status >> 1;
377 if (task_status != BFI_TSKIM_STS_OK) {
378 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
379 "target reset failure,"
380 " status: %d\n", task_status);
381 err_cnt++;
382 }
383 }
384 }
385 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
386
387 if (err_cnt)
388 return FAILED;
389
390 return SUCCESS;
391 }
392
393 /*
394 * Scsi_Host template entry slave_destroy.
395 */
396 static void
397 bfad_im_slave_destroy(struct scsi_device *sdev)
398 {
399 sdev->hostdata = NULL;
400 return;
401 }
402
403 /*
404 * BFA FCS itnim callbacks
405 */
406
407 /*
408 * BFA FCS itnim alloc callback, after successful PRLI
409 * Context: Interrupt
410 */
411 void
412 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
413 struct bfad_itnim_s **itnim_drv)
414 {
415 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
416 if (*itnim_drv == NULL)
417 return;
418
419 (*itnim_drv)->im = bfad->im;
420 *itnim = &(*itnim_drv)->fcs_itnim;
421 (*itnim_drv)->state = ITNIM_STATE_NONE;
422
423 /*
424 * Initiaze the itnim_work
425 */
426 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
427 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
428 }
429
430 /*
431 * BFA FCS itnim free callback.
432 * Context: Interrupt. bfad_lock is held
433 */
434 void
435 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
436 {
437 struct bfad_port_s *port;
438 wwn_t wwpn;
439 u32 fcid;
440 char wwpn_str[32], fcid_str[16];
441 struct bfad_im_s *im = itnim_drv->im;
442
443 /* online to free state transtion should not happen */
444 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
445
446 itnim_drv->queue_work = 1;
447 /* offline request is not yet done, use the same request to free */
448 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
449 itnim_drv->queue_work = 0;
450
451 itnim_drv->state = ITNIM_STATE_FREE;
452 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
453 itnim_drv->im_port = port->im_port;
454 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
455 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
456 wwn2str(wwpn_str, wwpn);
457 fcid2str(fcid_str, fcid);
458 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
459 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
460 port->im_port->shost->host_no,
461 fcid_str, wwpn_str);
462
463 /* ITNIM processing */
464 if (itnim_drv->queue_work)
465 queue_work(im->drv_workq, &itnim_drv->itnim_work);
466 }
467
468 /*
469 * BFA FCS itnim online callback.
470 * Context: Interrupt. bfad_lock is held
471 */
472 void
473 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
474 {
475 struct bfad_port_s *port;
476 struct bfad_im_s *im = itnim_drv->im;
477
478 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
479 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
480 itnim_drv->state = ITNIM_STATE_ONLINE;
481 itnim_drv->queue_work = 1;
482 itnim_drv->im_port = port->im_port;
483
484 /* ITNIM processing */
485 if (itnim_drv->queue_work)
486 queue_work(im->drv_workq, &itnim_drv->itnim_work);
487 }
488
489 /*
490 * BFA FCS itnim offline callback.
491 * Context: Interrupt. bfad_lock is held
492 */
493 void
494 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
495 {
496 struct bfad_port_s *port;
497 struct bfad_s *bfad;
498 struct bfad_im_s *im = itnim_drv->im;
499
500 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
501 bfad = port->bfad;
502 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
503 (port->flags & BFAD_PORT_DELETE)) {
504 itnim_drv->state = ITNIM_STATE_OFFLINE;
505 return;
506 }
507 itnim_drv->im_port = port->im_port;
508 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
509 itnim_drv->queue_work = 1;
510
511 /* ITNIM processing */
512 if (itnim_drv->queue_work)
513 queue_work(im->drv_workq, &itnim_drv->itnim_work);
514 }
515
516 /*
517 * Allocate a Scsi_Host for a port.
518 */
519 int
520 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
521 struct device *dev)
522 {
523 int error = 1;
524
525 mutex_lock(&bfad_mutex);
526 if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
527 mutex_unlock(&bfad_mutex);
528 printk(KERN_WARNING "idr_pre_get failure\n");
529 goto out;
530 }
531
532 error = idr_get_new(&bfad_im_port_index, im_port,
533 &im_port->idr_id);
534 if (error) {
535 mutex_unlock(&bfad_mutex);
536 printk(KERN_WARNING "idr_get_new failure\n");
537 goto out;
538 }
539
540 mutex_unlock(&bfad_mutex);
541
542 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
543 if (!im_port->shost) {
544 error = 1;
545 goto out_free_idr;
546 }
547
548 im_port->shost->hostdata[0] = (unsigned long)im_port;
549 im_port->shost->unique_id = im_port->idr_id;
550 im_port->shost->this_id = -1;
551 im_port->shost->max_id = MAX_FCP_TARGET;
552 im_port->shost->max_lun = MAX_FCP_LUN;
553 im_port->shost->max_cmd_len = 16;
554 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
555 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
556 im_port->shost->transportt = bfad_im_scsi_transport_template;
557 else
558 im_port->shost->transportt =
559 bfad_im_scsi_vport_transport_template;
560
561 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
562 if (error) {
563 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
564 goto out_fc_rel;
565 }
566
567 return 0;
568
569 out_fc_rel:
570 scsi_host_put(im_port->shost);
571 im_port->shost = NULL;
572 out_free_idr:
573 mutex_lock(&bfad_mutex);
574 idr_remove(&bfad_im_port_index, im_port->idr_id);
575 mutex_unlock(&bfad_mutex);
576 out:
577 return error;
578 }
579
580 void
581 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
582 {
583 bfa_trc(bfad, bfad->inst_no);
584 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
585 im_port->shost->host_no);
586
587 fc_remove_host(im_port->shost);
588
589 scsi_remove_host(im_port->shost);
590 scsi_host_put(im_port->shost);
591
592 mutex_lock(&bfad_mutex);
593 idr_remove(&bfad_im_port_index, im_port->idr_id);
594 mutex_unlock(&bfad_mutex);
595 }
596
597 static void
598 bfad_im_port_delete_handler(struct work_struct *work)
599 {
600 struct bfad_im_port_s *im_port =
601 container_of(work, struct bfad_im_port_s, port_delete_work);
602
603 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
604 im_port->flags |= BFAD_PORT_DELETE;
605 fc_vport_terminate(im_port->fc_vport);
606 }
607 }
608
609 bfa_status_t
610 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
611 {
612 int rc = BFA_STATUS_OK;
613 struct bfad_im_port_s *im_port;
614
615 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
616 if (im_port == NULL) {
617 rc = BFA_STATUS_ENOMEM;
618 goto ext;
619 }
620 port->im_port = im_port;
621 im_port->port = port;
622 im_port->bfad = bfad;
623
624 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
625 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
626 INIT_LIST_HEAD(&im_port->binding_list);
627
628 ext:
629 return rc;
630 }
631
632 void
633 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
634 {
635 struct bfad_im_port_s *im_port = port->im_port;
636
637 queue_work(bfad->im->drv_workq,
638 &im_port->port_delete_work);
639 }
640
641 void
642 bfad_im_port_clean(struct bfad_im_port_s *im_port)
643 {
644 struct bfad_fcp_binding *bp, *bp_new;
645 unsigned long flags;
646 struct bfad_s *bfad = im_port->bfad;
647
648 spin_lock_irqsave(&bfad->bfad_lock, flags);
649 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
650 list_entry) {
651 list_del(&bp->list_entry);
652 kfree(bp);
653 }
654
655 /* the itnim_mapped_list must be empty at this time */
656 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
657
658 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
659 }
660
661 static void bfad_aen_im_notify_handler(struct work_struct *work)
662 {
663 struct bfad_im_s *im =
664 container_of(work, struct bfad_im_s, aen_im_notify_work);
665 struct bfa_aen_entry_s *aen_entry;
666 struct bfad_s *bfad = im->bfad;
667 struct Scsi_Host *shost = bfad->pport.im_port->shost;
668 void *event_data;
669 unsigned long flags;
670
671 while (!list_empty(&bfad->active_aen_q)) {
672 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
673 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
674 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
675 event_data = (char *)aen_entry + sizeof(struct list_head);
676 fc_host_post_vendor_event(shost, fc_get_event_number(),
677 sizeof(struct bfa_aen_entry_s) -
678 sizeof(struct list_head),
679 (char *)event_data, BFAD_NL_VENDOR_ID);
680 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
681 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
682 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
683 }
684 }
685
686 bfa_status_t
687 bfad_im_probe(struct bfad_s *bfad)
688 {
689 struct bfad_im_s *im;
690 bfa_status_t rc = BFA_STATUS_OK;
691
692 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
693 if (im == NULL) {
694 rc = BFA_STATUS_ENOMEM;
695 goto ext;
696 }
697
698 bfad->im = im;
699 im->bfad = bfad;
700
701 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
702 kfree(im);
703 rc = BFA_STATUS_FAILED;
704 }
705
706 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
707 ext:
708 return rc;
709 }
710
711 void
712 bfad_im_probe_undo(struct bfad_s *bfad)
713 {
714 if (bfad->im) {
715 bfad_destroy_workq(bfad->im);
716 kfree(bfad->im);
717 bfad->im = NULL;
718 }
719 }
720
721 struct Scsi_Host *
722 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
723 {
724 struct scsi_host_template *sht;
725
726 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
727 sht = &bfad_im_scsi_host_template;
728 else
729 sht = &bfad_im_vport_template;
730
731 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
732 sht->max_sectors = max_xfer_size << 1;
733
734 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
735
736 return scsi_host_alloc(sht, sizeof(unsigned long));
737 }
738
739 void
740 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
741 {
742 if (!(im_port->flags & BFAD_PORT_DELETE))
743 flush_workqueue(bfad->im->drv_workq);
744 bfad_im_scsi_host_free(im_port->bfad, im_port);
745 bfad_im_port_clean(im_port);
746 kfree(im_port);
747 }
748
749 void
750 bfad_destroy_workq(struct bfad_im_s *im)
751 {
752 if (im && im->drv_workq) {
753 flush_workqueue(im->drv_workq);
754 destroy_workqueue(im->drv_workq);
755 im->drv_workq = NULL;
756 }
757 }
758
759 bfa_status_t
760 bfad_thread_workq(struct bfad_s *bfad)
761 {
762 struct bfad_im_s *im = bfad->im;
763
764 bfa_trc(bfad, 0);
765 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
766 bfad->inst_no);
767 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
768 if (!im->drv_workq)
769 return BFA_STATUS_FAILED;
770
771 return BFA_STATUS_OK;
772 }
773
774 /*
775 * Scsi_Host template entry.
776 *
777 * Description:
778 * OS entry point to adjust the queue_depths on a per-device basis.
779 * Called once per device during the bus scan.
780 * Return non-zero if fails.
781 */
782 static int
783 bfad_im_slave_configure(struct scsi_device *sdev)
784 {
785 if (sdev->tagged_supported)
786 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
787 else
788 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
789
790 return 0;
791 }
792
793 struct scsi_host_template bfad_im_scsi_host_template = {
794 .module = THIS_MODULE,
795 .name = BFAD_DRIVER_NAME,
796 .info = bfad_im_info,
797 .queuecommand = bfad_im_queuecommand,
798 .eh_abort_handler = bfad_im_abort_handler,
799 .eh_device_reset_handler = bfad_im_reset_lun_handler,
800 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
801
802 .slave_alloc = bfad_im_slave_alloc,
803 .slave_configure = bfad_im_slave_configure,
804 .slave_destroy = bfad_im_slave_destroy,
805
806 .this_id = -1,
807 .sg_tablesize = BFAD_IO_MAX_SGE,
808 .cmd_per_lun = 3,
809 .use_clustering = ENABLE_CLUSTERING,
810 .shost_attrs = bfad_im_host_attrs,
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 .eh_abort_handler = bfad_im_abort_handler,
821 .eh_device_reset_handler = bfad_im_reset_lun_handler,
822 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
823
824 .slave_alloc = bfad_im_slave_alloc,
825 .slave_configure = bfad_im_slave_configure,
826 .slave_destroy = bfad_im_slave_destroy,
827
828 .this_id = -1,
829 .sg_tablesize = BFAD_IO_MAX_SGE,
830 .cmd_per_lun = 3,
831 .use_clustering = ENABLE_CLUSTERING,
832 .shost_attrs = bfad_im_vport_attrs,
833 .max_sectors = BFAD_MAX_SECTORS,
834 };
835
836 bfa_status_t
837 bfad_im_module_init(void)
838 {
839 bfad_im_scsi_transport_template =
840 fc_attach_transport(&bfad_im_fc_function_template);
841 if (!bfad_im_scsi_transport_template)
842 return BFA_STATUS_ENOMEM;
843
844 bfad_im_scsi_vport_transport_template =
845 fc_attach_transport(&bfad_im_vport_fc_function_template);
846 if (!bfad_im_scsi_vport_transport_template) {
847 fc_release_transport(bfad_im_scsi_transport_template);
848 return BFA_STATUS_ENOMEM;
849 }
850
851 return BFA_STATUS_OK;
852 }
853
854 void
855 bfad_im_module_exit(void)
856 {
857 if (bfad_im_scsi_transport_template)
858 fc_release_transport(bfad_im_scsi_transport_template);
859
860 if (bfad_im_scsi_vport_transport_template)
861 fc_release_transport(bfad_im_scsi_vport_transport_template);
862 }
863
864 void
865 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
866 {
867 struct scsi_device *tmp_sdev;
868
869 if (((jiffies - itnim->last_ramp_up_time) >
870 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
871 ((jiffies - itnim->last_queue_full_time) >
872 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
873 shost_for_each_device(tmp_sdev, sdev->host) {
874 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
875 if (tmp_sdev->id != sdev->id)
876 continue;
877 if (tmp_sdev->ordered_tags)
878 scsi_adjust_queue_depth(tmp_sdev,
879 MSG_ORDERED_TAG,
880 tmp_sdev->queue_depth + 1);
881 else
882 scsi_adjust_queue_depth(tmp_sdev,
883 MSG_SIMPLE_TAG,
884 tmp_sdev->queue_depth + 1);
885
886 itnim->last_ramp_up_time = jiffies;
887 }
888 }
889 }
890 }
891
892 void
893 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
894 {
895 struct scsi_device *tmp_sdev;
896
897 itnim->last_queue_full_time = jiffies;
898
899 shost_for_each_device(tmp_sdev, sdev->host) {
900 if (tmp_sdev->id != sdev->id)
901 continue;
902 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
903 }
904 }
905
906 struct bfad_itnim_s *
907 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
908 {
909 struct bfad_itnim_s *itnim = NULL;
910
911 /* Search the mapped list for this target ID */
912 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
913 if (id == itnim->scsi_tgt_id)
914 return itnim;
915 }
916
917 return NULL;
918 }
919
920 /*
921 * Scsi_Host template entry slave_alloc
922 */
923 static int
924 bfad_im_slave_alloc(struct scsi_device *sdev)
925 {
926 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
927
928 if (!rport || fc_remote_port_chkready(rport))
929 return -ENXIO;
930
931 sdev->hostdata = rport->dd_data;
932
933 return 0;
934 }
935
936 static u32
937 bfad_im_supported_speeds(struct bfa_s *bfa)
938 {
939 struct bfa_ioc_attr_s *ioc_attr;
940 u32 supported_speed = 0;
941
942 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
943 if (!ioc_attr)
944 return 0;
945
946 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
947 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
948 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
949 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
950 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
951 if (ioc_attr->adapter_attr.is_mezz) {
952 supported_speed |= FC_PORTSPEED_8GBIT |
953 FC_PORTSPEED_4GBIT |
954 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
955 } else {
956 supported_speed |= FC_PORTSPEED_8GBIT |
957 FC_PORTSPEED_4GBIT |
958 FC_PORTSPEED_2GBIT;
959 }
960 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
961 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
962 FC_PORTSPEED_1GBIT;
963 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
964 supported_speed |= FC_PORTSPEED_10GBIT;
965 }
966 kfree(ioc_attr);
967 return supported_speed;
968 }
969
970 void
971 bfad_fc_host_init(struct bfad_im_port_s *im_port)
972 {
973 struct Scsi_Host *host = im_port->shost;
974 struct bfad_s *bfad = im_port->bfad;
975 struct bfad_port_s *port = im_port->port;
976 char symname[BFA_SYMNAME_MAXLEN];
977 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
978
979 fc_host_node_name(host) =
980 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
981 fc_host_port_name(host) =
982 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
983 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
984
985 fc_host_supported_classes(host) = FC_COS_CLASS3;
986
987 memset(fc_host_supported_fc4s(host), 0,
988 sizeof(fc_host_supported_fc4s(host)));
989 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
990 /* For FCP type 0x08 */
991 fc_host_supported_fc4s(host)[2] = 1;
992 /* For fibre channel services type 0x20 */
993 fc_host_supported_fc4s(host)[7] = 1;
994
995 strncpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
996 BFA_SYMNAME_MAXLEN);
997 sprintf(fc_host_symbolic_name(host), "%s", symname);
998
999 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1000 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1001 }
1002
1003 static void
1004 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1005 {
1006 struct fc_rport_identifiers rport_ids;
1007 struct fc_rport *fc_rport;
1008 struct bfad_itnim_data_s *itnim_data;
1009
1010 rport_ids.node_name =
1011 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1012 rport_ids.port_name =
1013 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1014 rport_ids.port_id =
1015 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1016 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1017
1018 itnim->fc_rport = fc_rport =
1019 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1020
1021 if (!fc_rport)
1022 return;
1023
1024 fc_rport->maxframe_size =
1025 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1026 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1027
1028 itnim_data = fc_rport->dd_data;
1029 itnim_data->itnim = itnim;
1030
1031 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1032
1033 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1034 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1035
1036 if ((fc_rport->scsi_target_id != -1)
1037 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1038 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1039
1040 return;
1041 }
1042
1043 /*
1044 * Work queue handler using FC transport service
1045 * Context: kernel
1046 */
1047 static void
1048 bfad_im_itnim_work_handler(struct work_struct *work)
1049 {
1050 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1051 itnim_work);
1052 struct bfad_im_s *im = itnim->im;
1053 struct bfad_s *bfad = im->bfad;
1054 struct bfad_im_port_s *im_port;
1055 unsigned long flags;
1056 struct fc_rport *fc_rport;
1057 wwn_t wwpn;
1058 u32 fcid;
1059 char wwpn_str[32], fcid_str[16];
1060
1061 spin_lock_irqsave(&bfad->bfad_lock, flags);
1062 im_port = itnim->im_port;
1063 bfa_trc(bfad, itnim->state);
1064 switch (itnim->state) {
1065 case ITNIM_STATE_ONLINE:
1066 if (!itnim->fc_rport) {
1067 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1068 bfad_im_fc_rport_add(im_port, itnim);
1069 spin_lock_irqsave(&bfad->bfad_lock, flags);
1070 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1071 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1072 wwn2str(wwpn_str, wwpn);
1073 fcid2str(fcid_str, fcid);
1074 list_add_tail(&itnim->list_entry,
1075 &im_port->itnim_mapped_list);
1076 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1077 "ITNIM ONLINE Target: %d:0:%d "
1078 "FCID: %s WWPN: %s\n",
1079 im_port->shost->host_no,
1080 itnim->scsi_tgt_id,
1081 fcid_str, wwpn_str);
1082 } else {
1083 printk(KERN_WARNING
1084 "%s: itnim %llx is already in online state\n",
1085 __func__,
1086 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1087 }
1088
1089 break;
1090 case ITNIM_STATE_OFFLINE_PENDING:
1091 itnim->state = ITNIM_STATE_OFFLINE;
1092 if (itnim->fc_rport) {
1093 fc_rport = itnim->fc_rport;
1094 ((struct bfad_itnim_data_s *)
1095 fc_rport->dd_data)->itnim = NULL;
1096 itnim->fc_rport = NULL;
1097 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1098 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1099 fc_rport->dev_loss_tmo =
1100 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1101 fc_remote_port_delete(fc_rport);
1102 spin_lock_irqsave(&bfad->bfad_lock, flags);
1103 }
1104 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1105 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1106 wwn2str(wwpn_str, wwpn);
1107 fcid2str(fcid_str, fcid);
1108 list_del(&itnim->list_entry);
1109 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1110 "ITNIM OFFLINE Target: %d:0:%d "
1111 "FCID: %s WWPN: %s\n",
1112 im_port->shost->host_no,
1113 itnim->scsi_tgt_id,
1114 fcid_str, wwpn_str);
1115 }
1116 break;
1117 case ITNIM_STATE_FREE:
1118 if (itnim->fc_rport) {
1119 fc_rport = itnim->fc_rport;
1120 ((struct bfad_itnim_data_s *)
1121 fc_rport->dd_data)->itnim = NULL;
1122 itnim->fc_rport = NULL;
1123 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1124 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1125 fc_rport->dev_loss_tmo =
1126 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1127 fc_remote_port_delete(fc_rport);
1128 spin_lock_irqsave(&bfad->bfad_lock, flags);
1129 }
1130 list_del(&itnim->list_entry);
1131 }
1132
1133 kfree(itnim);
1134 break;
1135 default:
1136 WARN_ON(1);
1137 break;
1138 }
1139
1140 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1141 }
1142
1143 /*
1144 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1145 */
1146 static int
1147 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1148 {
1149 struct bfad_im_port_s *im_port =
1150 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1151 struct bfad_s *bfad = im_port->bfad;
1152 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1153 struct bfad_itnim_s *itnim;
1154 struct bfa_ioim_s *hal_io;
1155 unsigned long flags;
1156 int rc;
1157 int sg_cnt = 0;
1158 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1159
1160 rc = fc_remote_port_chkready(rport);
1161 if (rc) {
1162 cmnd->result = rc;
1163 done(cmnd);
1164 return 0;
1165 }
1166
1167 sg_cnt = scsi_dma_map(cmnd);
1168 if (sg_cnt < 0)
1169 return SCSI_MLQUEUE_HOST_BUSY;
1170
1171 cmnd->scsi_done = done;
1172
1173 spin_lock_irqsave(&bfad->bfad_lock, flags);
1174 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1175 printk(KERN_WARNING
1176 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1177 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1178 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1179 goto out_fail_cmd;
1180 }
1181
1182
1183 itnim = itnim_data->itnim;
1184 if (!itnim) {
1185 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1186 goto out_fail_cmd;
1187 }
1188
1189 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1190 itnim->bfa_itnim, sg_cnt);
1191 if (!hal_io) {
1192 printk(KERN_WARNING "hal_io failure\n");
1193 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1194 scsi_dma_unmap(cmnd);
1195 return SCSI_MLQUEUE_HOST_BUSY;
1196 }
1197
1198 cmnd->host_scribble = (char *)hal_io;
1199 bfa_ioim_start(hal_io);
1200 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1201
1202 return 0;
1203
1204 out_fail_cmd:
1205 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1206 scsi_dma_unmap(cmnd);
1207 if (done)
1208 done(cmnd);
1209
1210 return 0;
1211 }
1212
1213 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1214
1215 void
1216 bfad_rport_online_wait(struct bfad_s *bfad)
1217 {
1218 int i;
1219 int rport_delay = 10;
1220
1221 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1222 && i < bfa_linkup_delay; i++) {
1223 set_current_state(TASK_UNINTERRUPTIBLE);
1224 schedule_timeout(HZ);
1225 }
1226
1227 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1228 rport_delay = rport_delay < bfa_linkup_delay ?
1229 rport_delay : bfa_linkup_delay;
1230 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1231 && i < rport_delay; i++) {
1232 set_current_state(TASK_UNINTERRUPTIBLE);
1233 schedule_timeout(HZ);
1234 }
1235
1236 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1237 set_current_state(TASK_UNINTERRUPTIBLE);
1238 schedule_timeout(rport_delay * HZ);
1239 }
1240 }
1241 }
1242
1243 int
1244 bfad_get_linkup_delay(struct bfad_s *bfad)
1245 {
1246 u8 nwwns = 0;
1247 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1248 int linkup_delay;
1249
1250 /*
1251 * Querying for the boot target port wwns
1252 * -- read from boot information in flash.
1253 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1254 * else => local boot machine set linkup_delay = 0
1255 */
1256
1257 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1258
1259 if (nwwns > 0)
1260 /* If Boot over SAN set linkup_delay = 30sec */
1261 linkup_delay = 30;
1262 else
1263 /* If local boot; no linkup_delay */
1264 linkup_delay = 0;
1265
1266 return linkup_delay;
1267 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree