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Merge git://git.infradead.org/users/willy/linux-nvme
[linux-2.6/cjktty.git] / drivers / scsi / bfa / bfad_im.c
blob5864f987f2062aa3b6e7d53b48bfe6fdcd427c1d
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 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
527 if (error < 0) {
528 mutex_unlock(&bfad_mutex);
529 printk(KERN_WARNING "idr_alloc failure\n");
530 goto out;
531 }
532 im_port->idr_id = error;
533 mutex_unlock(&bfad_mutex);
534
535 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
536 if (!im_port->shost) {
537 error = 1;
538 goto out_free_idr;
539 }
540
541 im_port->shost->hostdata[0] = (unsigned long)im_port;
542 im_port->shost->unique_id = im_port->idr_id;
543 im_port->shost->this_id = -1;
544 im_port->shost->max_id = MAX_FCP_TARGET;
545 im_port->shost->max_lun = MAX_FCP_LUN;
546 im_port->shost->max_cmd_len = 16;
547 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
548 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
549 im_port->shost->transportt = bfad_im_scsi_transport_template;
550 else
551 im_port->shost->transportt =
552 bfad_im_scsi_vport_transport_template;
553
554 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
555 if (error) {
556 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
557 goto out_fc_rel;
558 }
559
560 return 0;
561
562 out_fc_rel:
563 scsi_host_put(im_port->shost);
564 im_port->shost = NULL;
565 out_free_idr:
566 mutex_lock(&bfad_mutex);
567 idr_remove(&bfad_im_port_index, im_port->idr_id);
568 mutex_unlock(&bfad_mutex);
569 out:
570 return error;
571 }
572
573 void
574 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
575 {
576 bfa_trc(bfad, bfad->inst_no);
577 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
578 im_port->shost->host_no);
579
580 fc_remove_host(im_port->shost);
581
582 scsi_remove_host(im_port->shost);
583 scsi_host_put(im_port->shost);
584
585 mutex_lock(&bfad_mutex);
586 idr_remove(&bfad_im_port_index, im_port->idr_id);
587 mutex_unlock(&bfad_mutex);
588 }
589
590 static void
591 bfad_im_port_delete_handler(struct work_struct *work)
592 {
593 struct bfad_im_port_s *im_port =
594 container_of(work, struct bfad_im_port_s, port_delete_work);
595
596 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
597 im_port->flags |= BFAD_PORT_DELETE;
598 fc_vport_terminate(im_port->fc_vport);
599 }
600 }
601
602 bfa_status_t
603 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
604 {
605 int rc = BFA_STATUS_OK;
606 struct bfad_im_port_s *im_port;
607
608 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
609 if (im_port == NULL) {
610 rc = BFA_STATUS_ENOMEM;
611 goto ext;
612 }
613 port->im_port = im_port;
614 im_port->port = port;
615 im_port->bfad = bfad;
616
617 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
618 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
619 INIT_LIST_HEAD(&im_port->binding_list);
620
621 ext:
622 return rc;
623 }
624
625 void
626 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
627 {
628 struct bfad_im_port_s *im_port = port->im_port;
629
630 queue_work(bfad->im->drv_workq,
631 &im_port->port_delete_work);
632 }
633
634 void
635 bfad_im_port_clean(struct bfad_im_port_s *im_port)
636 {
637 struct bfad_fcp_binding *bp, *bp_new;
638 unsigned long flags;
639 struct bfad_s *bfad = im_port->bfad;
640
641 spin_lock_irqsave(&bfad->bfad_lock, flags);
642 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
643 list_entry) {
644 list_del(&bp->list_entry);
645 kfree(bp);
646 }
647
648 /* the itnim_mapped_list must be empty at this time */
649 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
650
651 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
652 }
653
654 static void bfad_aen_im_notify_handler(struct work_struct *work)
655 {
656 struct bfad_im_s *im =
657 container_of(work, struct bfad_im_s, aen_im_notify_work);
658 struct bfa_aen_entry_s *aen_entry;
659 struct bfad_s *bfad = im->bfad;
660 struct Scsi_Host *shost = bfad->pport.im_port->shost;
661 void *event_data;
662 unsigned long flags;
663
664 while (!list_empty(&bfad->active_aen_q)) {
665 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
666 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
667 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
668 event_data = (char *)aen_entry + sizeof(struct list_head);
669 fc_host_post_vendor_event(shost, fc_get_event_number(),
670 sizeof(struct bfa_aen_entry_s) -
671 sizeof(struct list_head),
672 (char *)event_data, BFAD_NL_VENDOR_ID);
673 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
674 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
675 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
676 }
677 }
678
679 bfa_status_t
680 bfad_im_probe(struct bfad_s *bfad)
681 {
682 struct bfad_im_s *im;
683
684 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
685 if (im == NULL)
686 return BFA_STATUS_ENOMEM;
687
688 bfad->im = im;
689 im->bfad = bfad;
690
691 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
692 kfree(im);
693 return BFA_STATUS_FAILED;
694 }
695
696 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
697 return BFA_STATUS_OK;
698 }
699
700 void
701 bfad_im_probe_undo(struct bfad_s *bfad)
702 {
703 if (bfad->im) {
704 bfad_destroy_workq(bfad->im);
705 kfree(bfad->im);
706 bfad->im = NULL;
707 }
708 }
709
710 struct Scsi_Host *
711 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
712 {
713 struct scsi_host_template *sht;
714
715 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
716 sht = &bfad_im_scsi_host_template;
717 else
718 sht = &bfad_im_vport_template;
719
720 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
721 sht->max_sectors = max_xfer_size << 1;
722
723 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
724
725 return scsi_host_alloc(sht, sizeof(unsigned long));
726 }
727
728 void
729 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
730 {
731 if (!(im_port->flags & BFAD_PORT_DELETE))
732 flush_workqueue(bfad->im->drv_workq);
733 bfad_im_scsi_host_free(im_port->bfad, im_port);
734 bfad_im_port_clean(im_port);
735 kfree(im_port);
736 }
737
738 void
739 bfad_destroy_workq(struct bfad_im_s *im)
740 {
741 if (im && im->drv_workq) {
742 flush_workqueue(im->drv_workq);
743 destroy_workqueue(im->drv_workq);
744 im->drv_workq = NULL;
745 }
746 }
747
748 bfa_status_t
749 bfad_thread_workq(struct bfad_s *bfad)
750 {
751 struct bfad_im_s *im = bfad->im;
752
753 bfa_trc(bfad, 0);
754 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
755 bfad->inst_no);
756 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
757 if (!im->drv_workq)
758 return BFA_STATUS_FAILED;
759
760 return BFA_STATUS_OK;
761 }
762
763 /*
764 * Scsi_Host template entry.
765 *
766 * Description:
767 * OS entry point to adjust the queue_depths on a per-device basis.
768 * Called once per device during the bus scan.
769 * Return non-zero if fails.
770 */
771 static int
772 bfad_im_slave_configure(struct scsi_device *sdev)
773 {
774 if (sdev->tagged_supported)
775 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
776 else
777 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
778
779 return 0;
780 }
781
782 struct scsi_host_template bfad_im_scsi_host_template = {
783 .module = THIS_MODULE,
784 .name = BFAD_DRIVER_NAME,
785 .info = bfad_im_info,
786 .queuecommand = bfad_im_queuecommand,
787 .eh_abort_handler = bfad_im_abort_handler,
788 .eh_device_reset_handler = bfad_im_reset_lun_handler,
789 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
790
791 .slave_alloc = bfad_im_slave_alloc,
792 .slave_configure = bfad_im_slave_configure,
793 .slave_destroy = bfad_im_slave_destroy,
794
795 .this_id = -1,
796 .sg_tablesize = BFAD_IO_MAX_SGE,
797 .cmd_per_lun = 3,
798 .use_clustering = ENABLE_CLUSTERING,
799 .shost_attrs = bfad_im_host_attrs,
800 .max_sectors = BFAD_MAX_SECTORS,
801 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
802 };
803
804 struct scsi_host_template bfad_im_vport_template = {
805 .module = THIS_MODULE,
806 .name = BFAD_DRIVER_NAME,
807 .info = bfad_im_info,
808 .queuecommand = bfad_im_queuecommand,
809 .eh_abort_handler = bfad_im_abort_handler,
810 .eh_device_reset_handler = bfad_im_reset_lun_handler,
811 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
812
813 .slave_alloc = bfad_im_slave_alloc,
814 .slave_configure = bfad_im_slave_configure,
815 .slave_destroy = bfad_im_slave_destroy,
816
817 .this_id = -1,
818 .sg_tablesize = BFAD_IO_MAX_SGE,
819 .cmd_per_lun = 3,
820 .use_clustering = ENABLE_CLUSTERING,
821 .shost_attrs = bfad_im_vport_attrs,
822 .max_sectors = BFAD_MAX_SECTORS,
823 };
824
825 bfa_status_t
826 bfad_im_module_init(void)
827 {
828 bfad_im_scsi_transport_template =
829 fc_attach_transport(&bfad_im_fc_function_template);
830 if (!bfad_im_scsi_transport_template)
831 return BFA_STATUS_ENOMEM;
832
833 bfad_im_scsi_vport_transport_template =
834 fc_attach_transport(&bfad_im_vport_fc_function_template);
835 if (!bfad_im_scsi_vport_transport_template) {
836 fc_release_transport(bfad_im_scsi_transport_template);
837 return BFA_STATUS_ENOMEM;
838 }
839
840 return BFA_STATUS_OK;
841 }
842
843 void
844 bfad_im_module_exit(void)
845 {
846 if (bfad_im_scsi_transport_template)
847 fc_release_transport(bfad_im_scsi_transport_template);
848
849 if (bfad_im_scsi_vport_transport_template)
850 fc_release_transport(bfad_im_scsi_vport_transport_template);
851 }
852
853 void
854 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
855 {
856 struct scsi_device *tmp_sdev;
857
858 if (((jiffies - itnim->last_ramp_up_time) >
859 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
860 ((jiffies - itnim->last_queue_full_time) >
861 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
862 shost_for_each_device(tmp_sdev, sdev->host) {
863 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
864 if (tmp_sdev->id != sdev->id)
865 continue;
866 if (tmp_sdev->ordered_tags)
867 scsi_adjust_queue_depth(tmp_sdev,
868 MSG_ORDERED_TAG,
869 tmp_sdev->queue_depth + 1);
870 else
871 scsi_adjust_queue_depth(tmp_sdev,
872 MSG_SIMPLE_TAG,
873 tmp_sdev->queue_depth + 1);
874
875 itnim->last_ramp_up_time = jiffies;
876 }
877 }
878 }
879 }
880
881 void
882 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
883 {
884 struct scsi_device *tmp_sdev;
885
886 itnim->last_queue_full_time = jiffies;
887
888 shost_for_each_device(tmp_sdev, sdev->host) {
889 if (tmp_sdev->id != sdev->id)
890 continue;
891 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
892 }
893 }
894
895 struct bfad_itnim_s *
896 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
897 {
898 struct bfad_itnim_s *itnim = NULL;
899
900 /* Search the mapped list for this target ID */
901 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
902 if (id == itnim->scsi_tgt_id)
903 return itnim;
904 }
905
906 return NULL;
907 }
908
909 /*
910 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
911 * Has the logic to query the LUN Mask database to check if this LUN needs to
912 * be made visible to the SCSI mid-layer or not.
913 *
914 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
915 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
916 */
917 static int
918 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
919 struct fc_rport *rport)
920 {
921 struct bfad_itnim_data_s *itnim_data =
922 (struct bfad_itnim_data_s *) rport->dd_data;
923 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
924 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
925 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
926 int i = 0, ret = -ENXIO;
927
928 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
929 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
930 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
931 lun_list[i].rp_tag == bfa_rport->rport_tag &&
932 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
933 ret = BFA_STATUS_OK;
934 break;
935 }
936 }
937 return ret;
938 }
939
940 /*
941 * Scsi_Host template entry slave_alloc
942 */
943 static int
944 bfad_im_slave_alloc(struct scsi_device *sdev)
945 {
946 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
947 struct bfad_itnim_data_s *itnim_data =
948 (struct bfad_itnim_data_s *) rport->dd_data;
949 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
950
951 if (!rport || fc_remote_port_chkready(rport))
952 return -ENXIO;
953
954 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
955 /*
956 * We should not mask LUN 0 - since this will translate
957 * to no LUN / TARGET for SCSI ml resulting no scan.
958 */
959 if (sdev->lun == 0) {
960 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
961 BLIST_SPARSELUN;
962 goto done;
963 }
964
965 /*
966 * Query LUN Mask configuration - to expose this LUN
967 * to the SCSI mid-layer or to mask it.
968 */
969 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
970 BFA_STATUS_OK)
971 return -ENXIO;
972 }
973 done:
974 sdev->hostdata = rport->dd_data;
975
976 return 0;
977 }
978
979 u32
980 bfad_im_supported_speeds(struct bfa_s *bfa)
981 {
982 struct bfa_ioc_attr_s *ioc_attr;
983 u32 supported_speed = 0;
984
985 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
986 if (!ioc_attr)
987 return 0;
988
989 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
990 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
991 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
992 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
993 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
994 if (ioc_attr->adapter_attr.is_mezz) {
995 supported_speed |= FC_PORTSPEED_8GBIT |
996 FC_PORTSPEED_4GBIT |
997 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
998 } else {
999 supported_speed |= FC_PORTSPEED_8GBIT |
1000 FC_PORTSPEED_4GBIT |
1001 FC_PORTSPEED_2GBIT;
1002 }
1003 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1004 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1005 FC_PORTSPEED_1GBIT;
1006 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1007 supported_speed |= FC_PORTSPEED_10GBIT;
1008 }
1009 kfree(ioc_attr);
1010 return supported_speed;
1011 }
1012
1013 void
1014 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1015 {
1016 struct Scsi_Host *host = im_port->shost;
1017 struct bfad_s *bfad = im_port->bfad;
1018 struct bfad_port_s *port = im_port->port;
1019 char symname[BFA_SYMNAME_MAXLEN];
1020 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1021
1022 fc_host_node_name(host) =
1023 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1024 fc_host_port_name(host) =
1025 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1026 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1027
1028 fc_host_supported_classes(host) = FC_COS_CLASS3;
1029
1030 memset(fc_host_supported_fc4s(host), 0,
1031 sizeof(fc_host_supported_fc4s(host)));
1032 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1033 /* For FCP type 0x08 */
1034 fc_host_supported_fc4s(host)[2] = 1;
1035 /* For fibre channel services type 0x20 */
1036 fc_host_supported_fc4s(host)[7] = 1;
1037
1038 strncpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1039 BFA_SYMNAME_MAXLEN);
1040 sprintf(fc_host_symbolic_name(host), "%s", symname);
1041
1042 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1043 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1044 }
1045
1046 static void
1047 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1048 {
1049 struct fc_rport_identifiers rport_ids;
1050 struct fc_rport *fc_rport;
1051 struct bfad_itnim_data_s *itnim_data;
1052
1053 rport_ids.node_name =
1054 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1055 rport_ids.port_name =
1056 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1057 rport_ids.port_id =
1058 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1059 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1060
1061 itnim->fc_rport = fc_rport =
1062 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1063
1064 if (!fc_rport)
1065 return;
1066
1067 fc_rport->maxframe_size =
1068 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1069 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1070
1071 itnim_data = fc_rport->dd_data;
1072 itnim_data->itnim = itnim;
1073
1074 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1075
1076 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1077 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1078
1079 if ((fc_rport->scsi_target_id != -1)
1080 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1081 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1082
1083 itnim->channel = fc_rport->channel;
1084
1085 return;
1086 }
1087
1088 /*
1089 * Work queue handler using FC transport service
1090 * Context: kernel
1091 */
1092 static void
1093 bfad_im_itnim_work_handler(struct work_struct *work)
1094 {
1095 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1096 itnim_work);
1097 struct bfad_im_s *im = itnim->im;
1098 struct bfad_s *bfad = im->bfad;
1099 struct bfad_im_port_s *im_port;
1100 unsigned long flags;
1101 struct fc_rport *fc_rport;
1102 wwn_t wwpn;
1103 u32 fcid;
1104 char wwpn_str[32], fcid_str[16];
1105
1106 spin_lock_irqsave(&bfad->bfad_lock, flags);
1107 im_port = itnim->im_port;
1108 bfa_trc(bfad, itnim->state);
1109 switch (itnim->state) {
1110 case ITNIM_STATE_ONLINE:
1111 if (!itnim->fc_rport) {
1112 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1113 bfad_im_fc_rport_add(im_port, itnim);
1114 spin_lock_irqsave(&bfad->bfad_lock, flags);
1115 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1116 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1117 wwn2str(wwpn_str, wwpn);
1118 fcid2str(fcid_str, fcid);
1119 list_add_tail(&itnim->list_entry,
1120 &im_port->itnim_mapped_list);
1121 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1122 "ITNIM ONLINE Target: %d:0:%d "
1123 "FCID: %s WWPN: %s\n",
1124 im_port->shost->host_no,
1125 itnim->scsi_tgt_id,
1126 fcid_str, wwpn_str);
1127 } else {
1128 printk(KERN_WARNING
1129 "%s: itnim %llx is already in online state\n",
1130 __func__,
1131 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1132 }
1133
1134 break;
1135 case ITNIM_STATE_OFFLINE_PENDING:
1136 itnim->state = ITNIM_STATE_OFFLINE;
1137 if (itnim->fc_rport) {
1138 fc_rport = itnim->fc_rport;
1139 ((struct bfad_itnim_data_s *)
1140 fc_rport->dd_data)->itnim = NULL;
1141 itnim->fc_rport = NULL;
1142 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1143 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1144 fc_rport->dev_loss_tmo =
1145 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1146 fc_remote_port_delete(fc_rport);
1147 spin_lock_irqsave(&bfad->bfad_lock, flags);
1148 }
1149 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1150 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1151 wwn2str(wwpn_str, wwpn);
1152 fcid2str(fcid_str, fcid);
1153 list_del(&itnim->list_entry);
1154 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1155 "ITNIM OFFLINE Target: %d:0:%d "
1156 "FCID: %s WWPN: %s\n",
1157 im_port->shost->host_no,
1158 itnim->scsi_tgt_id,
1159 fcid_str, wwpn_str);
1160 }
1161 break;
1162 case ITNIM_STATE_FREE:
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 list_del(&itnim->list_entry);
1176 }
1177
1178 kfree(itnim);
1179 break;
1180 default:
1181 WARN_ON(1);
1182 break;
1183 }
1184
1185 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1186 }
1187
1188 /*
1189 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1190 */
1191 static int
1192 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1193 {
1194 struct bfad_im_port_s *im_port =
1195 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1196 struct bfad_s *bfad = im_port->bfad;
1197 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1198 struct bfad_itnim_s *itnim;
1199 struct bfa_ioim_s *hal_io;
1200 unsigned long flags;
1201 int rc;
1202 int sg_cnt = 0;
1203 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1204
1205 rc = fc_remote_port_chkready(rport);
1206 if (rc) {
1207 cmnd->result = rc;
1208 done(cmnd);
1209 return 0;
1210 }
1211
1212 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1213 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1214 cmnd->result = DID_NO_CONNECT << 16;
1215 else
1216 cmnd->result = DID_REQUEUE << 16;
1217 done(cmnd);
1218 return 0;
1219 }
1220
1221 sg_cnt = scsi_dma_map(cmnd);
1222 if (sg_cnt < 0)
1223 return SCSI_MLQUEUE_HOST_BUSY;
1224
1225 cmnd->scsi_done = done;
1226
1227 spin_lock_irqsave(&bfad->bfad_lock, flags);
1228 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1229 printk(KERN_WARNING
1230 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1231 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1232 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1233 goto out_fail_cmd;
1234 }
1235
1236
1237 itnim = itnim_data->itnim;
1238 if (!itnim) {
1239 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1240 goto out_fail_cmd;
1241 }
1242
1243 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1244 itnim->bfa_itnim, sg_cnt);
1245 if (!hal_io) {
1246 printk(KERN_WARNING "hal_io failure\n");
1247 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1248 scsi_dma_unmap(cmnd);
1249 return SCSI_MLQUEUE_HOST_BUSY;
1250 }
1251
1252 cmnd->host_scribble = (char *)hal_io;
1253 bfa_ioim_start(hal_io);
1254 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1255
1256 return 0;
1257
1258 out_fail_cmd:
1259 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1260 scsi_dma_unmap(cmnd);
1261 if (done)
1262 done(cmnd);
1263
1264 return 0;
1265 }
1266
1267 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1268
1269 void
1270 bfad_rport_online_wait(struct bfad_s *bfad)
1271 {
1272 int i;
1273 int rport_delay = 10;
1274
1275 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1276 && i < bfa_linkup_delay; i++) {
1277 set_current_state(TASK_UNINTERRUPTIBLE);
1278 schedule_timeout(HZ);
1279 }
1280
1281 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1282 rport_delay = rport_delay < bfa_linkup_delay ?
1283 rport_delay : bfa_linkup_delay;
1284 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1285 && i < rport_delay; i++) {
1286 set_current_state(TASK_UNINTERRUPTIBLE);
1287 schedule_timeout(HZ);
1288 }
1289
1290 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1291 set_current_state(TASK_UNINTERRUPTIBLE);
1292 schedule_timeout(rport_delay * HZ);
1293 }
1294 }
1295 }
1296
1297 int
1298 bfad_get_linkup_delay(struct bfad_s *bfad)
1299 {
1300 u8 nwwns = 0;
1301 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1302 int linkup_delay;
1303
1304 /*
1305 * Querying for the boot target port wwns
1306 * -- read from boot information in flash.
1307 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1308 * else => local boot machine set linkup_delay = 0
1309 */
1310
1311 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1312
1313 if (nwwns > 0)
1314 /* If Boot over SAN set linkup_delay = 30sec */
1315 linkup_delay = 30;
1316 else
1317 /* If local boot; no linkup_delay */
1318 linkup_delay = 0;
1319
1320 return linkup_delay;
1321 }
CJK support for tty framebuffer vt