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23#include <linux/export.h>
24
25#include "bfad_drv.h"
26#include "bfad_im.h"
27#include "bfa_fcs.h"
28
29BFA_TRC_FILE(LDRV, IM);
30
31DEFINE_IDR(bfad_im_port_index);
32struct scsi_transport_template *bfad_im_scsi_transport_template;
33struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
34static void bfad_im_itnim_work_handler(struct work_struct *work);
35static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
36static int bfad_im_slave_alloc(struct scsi_device *sdev);
37static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
38 struct bfad_itnim_s *itnim);
39
40void
41bfa_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
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
103 bfad_ramp_up_qdepth(itnim, cmnd->device);
104 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
105
106 bfad_handle_qfull(itnim, cmnd->device);
107 }
108 }
109
110 cmnd->scsi_done(cmnd);
111}
112
113void
114bfa_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
123 if (cmnd->device->host != NULL)
124 scsi_dma_unmap(cmnd);
125
126 cmnd->host_scribble = NULL;
127
128
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
141void
142bfa_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
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
157void
158bfa_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
175
176
177
178
179static const char *
180bfad_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
197
198
199
200static int
201bfad_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
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
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;
246out:
247 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
248 return rc;
249}
250
251static bfa_status_t
252bfad_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
270
271
272 cmnd->host_scribble = NULL;
273 cmnd->SCp.Status = 0;
274 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
275
276
277
278
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);
291out:
292 return rc;
293}
294
295
296
297
298
299
300
301static int
302bfad_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
337
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
345
346
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
371out:
372 return rc;
373}
374
375
376
377
378static int
379bfad_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
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
427
428static void
429bfad_im_slave_destroy(struct scsi_device *sdev)
430{
431 sdev->hostdata = NULL;
432 return;
433}
434
435
436
437
438
439
440
441
442
443void
444bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
445 struct bfad_itnim_s **itnim_drv)
446{
447 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
448 if (*itnim_drv == NULL)
449 return;
450
451 (*itnim_drv)->im = bfad->im;
452 *itnim = &(*itnim_drv)->fcs_itnim;
453 (*itnim_drv)->state = ITNIM_STATE_NONE;
454
455
456
457
458 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
459 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
460}
461
462
463
464
465
466void
467bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
468{
469 struct bfad_port_s *port;
470 wwn_t wwpn;
471 u32 fcid;
472 char wwpn_str[32], fcid_str[16];
473 struct bfad_im_s *im = itnim_drv->im;
474
475
476 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
477
478 itnim_drv->queue_work = 1;
479
480 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
481 itnim_drv->queue_work = 0;
482
483 itnim_drv->state = ITNIM_STATE_FREE;
484 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
485 itnim_drv->im_port = port->im_port;
486 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
487 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
488 wwn2str(wwpn_str, wwpn);
489 fcid2str(fcid_str, fcid);
490 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
491 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
492 port->im_port->shost->host_no,
493 fcid_str, wwpn_str);
494
495
496 if (itnim_drv->queue_work)
497 queue_work(im->drv_workq, &itnim_drv->itnim_work);
498}
499
500
501
502
503
504void
505bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
506{
507 struct bfad_port_s *port;
508 struct bfad_im_s *im = itnim_drv->im;
509
510 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
511 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
512 itnim_drv->state = ITNIM_STATE_ONLINE;
513 itnim_drv->queue_work = 1;
514 itnim_drv->im_port = port->im_port;
515
516
517 if (itnim_drv->queue_work)
518 queue_work(im->drv_workq, &itnim_drv->itnim_work);
519}
520
521
522
523
524
525void
526bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
527{
528 struct bfad_port_s *port;
529 struct bfad_s *bfad;
530 struct bfad_im_s *im = itnim_drv->im;
531
532 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
533 bfad = port->bfad;
534 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
535 (port->flags & BFAD_PORT_DELETE)) {
536 itnim_drv->state = ITNIM_STATE_OFFLINE;
537 return;
538 }
539 itnim_drv->im_port = port->im_port;
540 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
541 itnim_drv->queue_work = 1;
542
543
544 if (itnim_drv->queue_work)
545 queue_work(im->drv_workq, &itnim_drv->itnim_work);
546}
547
548
549
550
551int
552bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
553 struct device *dev)
554{
555 int error = 1;
556
557 mutex_lock(&bfad_mutex);
558 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
559 if (error < 0) {
560 mutex_unlock(&bfad_mutex);
561 printk(KERN_WARNING "idr_alloc failure\n");
562 goto out;
563 }
564 im_port->idr_id = error;
565 mutex_unlock(&bfad_mutex);
566
567 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
568 if (!im_port->shost) {
569 error = 1;
570 goto out_free_idr;
571 }
572
573 im_port->shost->hostdata[0] = (unsigned long)im_port;
574 im_port->shost->unique_id = im_port->idr_id;
575 im_port->shost->this_id = -1;
576 im_port->shost->max_id = MAX_FCP_TARGET;
577 im_port->shost->max_lun = MAX_FCP_LUN;
578 im_port->shost->max_cmd_len = 16;
579 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
580 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
581 im_port->shost->transportt = bfad_im_scsi_transport_template;
582 else
583 im_port->shost->transportt =
584 bfad_im_scsi_vport_transport_template;
585
586 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
587 if (error) {
588 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
589 goto out_fc_rel;
590 }
591
592 return 0;
593
594out_fc_rel:
595 scsi_host_put(im_port->shost);
596 im_port->shost = NULL;
597out_free_idr:
598 mutex_lock(&bfad_mutex);
599 idr_remove(&bfad_im_port_index, im_port->idr_id);
600 mutex_unlock(&bfad_mutex);
601out:
602 return error;
603}
604
605void
606bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
607{
608 bfa_trc(bfad, bfad->inst_no);
609 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
610 im_port->shost->host_no);
611
612 fc_remove_host(im_port->shost);
613
614 scsi_remove_host(im_port->shost);
615 scsi_host_put(im_port->shost);
616
617 mutex_lock(&bfad_mutex);
618 idr_remove(&bfad_im_port_index, im_port->idr_id);
619 mutex_unlock(&bfad_mutex);
620}
621
622static void
623bfad_im_port_delete_handler(struct work_struct *work)
624{
625 struct bfad_im_port_s *im_port =
626 container_of(work, struct bfad_im_port_s, port_delete_work);
627
628 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
629 im_port->flags |= BFAD_PORT_DELETE;
630 fc_vport_terminate(im_port->fc_vport);
631 }
632}
633
634bfa_status_t
635bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
636{
637 int rc = BFA_STATUS_OK;
638 struct bfad_im_port_s *im_port;
639
640 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
641 if (im_port == NULL) {
642 rc = BFA_STATUS_ENOMEM;
643 goto ext;
644 }
645 port->im_port = im_port;
646 im_port->port = port;
647 im_port->bfad = bfad;
648
649 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
650 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
651 INIT_LIST_HEAD(&im_port->binding_list);
652
653ext:
654 return rc;
655}
656
657void
658bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
659{
660 struct bfad_im_port_s *im_port = port->im_port;
661
662 queue_work(bfad->im->drv_workq,
663 &im_port->port_delete_work);
664}
665
666void
667bfad_im_port_clean(struct bfad_im_port_s *im_port)
668{
669 struct bfad_fcp_binding *bp, *bp_new;
670 unsigned long flags;
671 struct bfad_s *bfad = im_port->bfad;
672
673 spin_lock_irqsave(&bfad->bfad_lock, flags);
674 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
675 list_entry) {
676 list_del(&bp->list_entry);
677 kfree(bp);
678 }
679
680
681 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
682
683 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
684}
685
686static void bfad_aen_im_notify_handler(struct work_struct *work)
687{
688 struct bfad_im_s *im =
689 container_of(work, struct bfad_im_s, aen_im_notify_work);
690 struct bfa_aen_entry_s *aen_entry;
691 struct bfad_s *bfad = im->bfad;
692 struct Scsi_Host *shost = bfad->pport.im_port->shost;
693 void *event_data;
694 unsigned long flags;
695
696 while (!list_empty(&bfad->active_aen_q)) {
697 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
698 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
699 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
700 event_data = (char *)aen_entry + sizeof(struct list_head);
701 fc_host_post_vendor_event(shost, fc_get_event_number(),
702 sizeof(struct bfa_aen_entry_s) -
703 sizeof(struct list_head),
704 (char *)event_data, BFAD_NL_VENDOR_ID);
705 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
706 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
707 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
708 }
709}
710
711bfa_status_t
712bfad_im_probe(struct bfad_s *bfad)
713{
714 struct bfad_im_s *im;
715
716 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
717 if (im == NULL)
718 return BFA_STATUS_ENOMEM;
719
720 bfad->im = im;
721 im->bfad = bfad;
722
723 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
724 kfree(im);
725 return BFA_STATUS_FAILED;
726 }
727
728 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
729 return BFA_STATUS_OK;
730}
731
732void
733bfad_im_probe_undo(struct bfad_s *bfad)
734{
735 if (bfad->im) {
736 bfad_destroy_workq(bfad->im);
737 kfree(bfad->im);
738 bfad->im = NULL;
739 }
740}
741
742struct Scsi_Host *
743bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
744{
745 struct scsi_host_template *sht;
746
747 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
748 sht = &bfad_im_scsi_host_template;
749 else
750 sht = &bfad_im_vport_template;
751
752 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
753 sht->max_sectors = max_xfer_size << 1;
754
755 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
756
757 return scsi_host_alloc(sht, sizeof(unsigned long));
758}
759
760void
761bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
762{
763 if (!(im_port->flags & BFAD_PORT_DELETE))
764 flush_workqueue(bfad->im->drv_workq);
765 bfad_im_scsi_host_free(im_port->bfad, im_port);
766 bfad_im_port_clean(im_port);
767 kfree(im_port);
768}
769
770void
771bfad_destroy_workq(struct bfad_im_s *im)
772{
773 if (im && im->drv_workq) {
774 flush_workqueue(im->drv_workq);
775 destroy_workqueue(im->drv_workq);
776 im->drv_workq = NULL;
777 }
778}
779
780bfa_status_t
781bfad_thread_workq(struct bfad_s *bfad)
782{
783 struct bfad_im_s *im = bfad->im;
784
785 bfa_trc(bfad, 0);
786 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
787 bfad->inst_no);
788 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
789 if (!im->drv_workq)
790 return BFA_STATUS_FAILED;
791
792 return BFA_STATUS_OK;
793}
794
795
796
797
798
799
800
801
802
803static int
804bfad_im_slave_configure(struct scsi_device *sdev)
805{
806 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
807 return 0;
808}
809
810struct scsi_host_template bfad_im_scsi_host_template = {
811 .module = THIS_MODULE,
812 .name = BFAD_DRIVER_NAME,
813 .info = bfad_im_info,
814 .queuecommand = bfad_im_queuecommand,
815 .eh_abort_handler = bfad_im_abort_handler,
816 .eh_device_reset_handler = bfad_im_reset_lun_handler,
817 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
818
819 .slave_alloc = bfad_im_slave_alloc,
820 .slave_configure = bfad_im_slave_configure,
821 .slave_destroy = bfad_im_slave_destroy,
822
823 .this_id = -1,
824 .sg_tablesize = BFAD_IO_MAX_SGE,
825 .cmd_per_lun = 3,
826 .use_clustering = ENABLE_CLUSTERING,
827 .shost_attrs = bfad_im_host_attrs,
828 .max_sectors = BFAD_MAX_SECTORS,
829 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
830};
831
832struct scsi_host_template bfad_im_vport_template = {
833 .module = THIS_MODULE,
834 .name = BFAD_DRIVER_NAME,
835 .info = bfad_im_info,
836 .queuecommand = bfad_im_queuecommand,
837 .eh_abort_handler = bfad_im_abort_handler,
838 .eh_device_reset_handler = bfad_im_reset_lun_handler,
839 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
840
841 .slave_alloc = bfad_im_slave_alloc,
842 .slave_configure = bfad_im_slave_configure,
843 .slave_destroy = bfad_im_slave_destroy,
844
845 .this_id = -1,
846 .sg_tablesize = BFAD_IO_MAX_SGE,
847 .cmd_per_lun = 3,
848 .use_clustering = ENABLE_CLUSTERING,
849 .shost_attrs = bfad_im_vport_attrs,
850 .max_sectors = BFAD_MAX_SECTORS,
851};
852
853bfa_status_t
854bfad_im_module_init(void)
855{
856 bfad_im_scsi_transport_template =
857 fc_attach_transport(&bfad_im_fc_function_template);
858 if (!bfad_im_scsi_transport_template)
859 return BFA_STATUS_ENOMEM;
860
861 bfad_im_scsi_vport_transport_template =
862 fc_attach_transport(&bfad_im_vport_fc_function_template);
863 if (!bfad_im_scsi_vport_transport_template) {
864 fc_release_transport(bfad_im_scsi_transport_template);
865 return BFA_STATUS_ENOMEM;
866 }
867
868 return BFA_STATUS_OK;
869}
870
871void
872bfad_im_module_exit(void)
873{
874 if (bfad_im_scsi_transport_template)
875 fc_release_transport(bfad_im_scsi_transport_template);
876
877 if (bfad_im_scsi_vport_transport_template)
878 fc_release_transport(bfad_im_scsi_vport_transport_template);
879
880 idr_destroy(&bfad_im_port_index);
881}
882
883void
884bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
885{
886 struct scsi_device *tmp_sdev;
887
888 if (((jiffies - itnim->last_ramp_up_time) >
889 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
890 ((jiffies - itnim->last_queue_full_time) >
891 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
892 shost_for_each_device(tmp_sdev, sdev->host) {
893 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
894 if (tmp_sdev->id != sdev->id)
895 continue;
896 scsi_change_queue_depth(tmp_sdev,
897 tmp_sdev->queue_depth + 1);
898
899 itnim->last_ramp_up_time = jiffies;
900 }
901 }
902 }
903}
904
905void
906bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
907{
908 struct scsi_device *tmp_sdev;
909
910 itnim->last_queue_full_time = jiffies;
911
912 shost_for_each_device(tmp_sdev, sdev->host) {
913 if (tmp_sdev->id != sdev->id)
914 continue;
915 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
916 }
917}
918
919struct bfad_itnim_s *
920bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
921{
922 struct bfad_itnim_s *itnim = NULL;
923
924
925 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
926 if (id == itnim->scsi_tgt_id)
927 return itnim;
928 }
929
930 return NULL;
931}
932
933
934
935
936
937
938
939
940
941static int
942bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
943 struct fc_rport *rport)
944{
945 struct bfad_itnim_data_s *itnim_data =
946 (struct bfad_itnim_data_s *) rport->dd_data;
947 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
948 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
949 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
950 int i = 0, ret = -ENXIO;
951
952 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
953 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
954 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
955 lun_list[i].rp_tag == bfa_rport->rport_tag &&
956 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
957 ret = BFA_STATUS_OK;
958 break;
959 }
960 }
961 return ret;
962}
963
964
965
966
967static int
968bfad_im_slave_alloc(struct scsi_device *sdev)
969{
970 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
971 struct bfad_itnim_data_s *itnim_data;
972 struct bfa_s *bfa;
973
974 if (!rport || fc_remote_port_chkready(rport))
975 return -ENXIO;
976
977 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
978 bfa = itnim_data->itnim->bfa_itnim->bfa;
979
980 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
981
982
983
984
985 if (sdev->lun == 0) {
986 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
987 BLIST_SPARSELUN;
988 goto done;
989 }
990
991
992
993
994
995 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
996 BFA_STATUS_OK)
997 return -ENXIO;
998 }
999done:
1000 sdev->hostdata = rport->dd_data;
1001
1002 return 0;
1003}
1004
1005u32
1006bfad_im_supported_speeds(struct bfa_s *bfa)
1007{
1008 struct bfa_ioc_attr_s *ioc_attr;
1009 u32 supported_speed = 0;
1010
1011 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1012 if (!ioc_attr)
1013 return 0;
1014
1015 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1016 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1017 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1018 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1019 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1020 if (ioc_attr->adapter_attr.is_mezz) {
1021 supported_speed |= FC_PORTSPEED_8GBIT |
1022 FC_PORTSPEED_4GBIT |
1023 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1024 } else {
1025 supported_speed |= FC_PORTSPEED_8GBIT |
1026 FC_PORTSPEED_4GBIT |
1027 FC_PORTSPEED_2GBIT;
1028 }
1029 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1030 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1031 FC_PORTSPEED_1GBIT;
1032 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1033 supported_speed |= FC_PORTSPEED_10GBIT;
1034 }
1035 kfree(ioc_attr);
1036 return supported_speed;
1037}
1038
1039void
1040bfad_fc_host_init(struct bfad_im_port_s *im_port)
1041{
1042 struct Scsi_Host *host = im_port->shost;
1043 struct bfad_s *bfad = im_port->bfad;
1044 struct bfad_port_s *port = im_port->port;
1045 char symname[BFA_SYMNAME_MAXLEN];
1046 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1047
1048 fc_host_node_name(host) =
1049 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1050 fc_host_port_name(host) =
1051 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1052 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1053
1054 fc_host_supported_classes(host) = FC_COS_CLASS3;
1055
1056 memset(fc_host_supported_fc4s(host), 0,
1057 sizeof(fc_host_supported_fc4s(host)));
1058 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1059
1060 fc_host_supported_fc4s(host)[2] = 1;
1061
1062 fc_host_supported_fc4s(host)[7] = 1;
1063
1064 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1065 BFA_SYMNAME_MAXLEN);
1066 sprintf(fc_host_symbolic_name(host), "%s", symname);
1067
1068 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1069 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1070}
1071
1072static void
1073bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1074{
1075 struct fc_rport_identifiers rport_ids;
1076 struct fc_rport *fc_rport;
1077 struct bfad_itnim_data_s *itnim_data;
1078
1079 rport_ids.node_name =
1080 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1081 rport_ids.port_name =
1082 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1083 rport_ids.port_id =
1084 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1085 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1086
1087 itnim->fc_rport = fc_rport =
1088 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1089
1090 if (!fc_rport)
1091 return;
1092
1093 fc_rport->maxframe_size =
1094 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1095 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1096
1097 itnim_data = fc_rport->dd_data;
1098 itnim_data->itnim = itnim;
1099
1100 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1101
1102 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1103 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1104
1105 if ((fc_rport->scsi_target_id != -1)
1106 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1107 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1108
1109 itnim->channel = fc_rport->channel;
1110
1111 return;
1112}
1113
1114
1115
1116
1117
1118static void
1119bfad_im_itnim_work_handler(struct work_struct *work)
1120{
1121 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1122 itnim_work);
1123 struct bfad_im_s *im = itnim->im;
1124 struct bfad_s *bfad = im->bfad;
1125 struct bfad_im_port_s *im_port;
1126 unsigned long flags;
1127 struct fc_rport *fc_rport;
1128 wwn_t wwpn;
1129 u32 fcid;
1130 char wwpn_str[32], fcid_str[16];
1131
1132 spin_lock_irqsave(&bfad->bfad_lock, flags);
1133 im_port = itnim->im_port;
1134 bfa_trc(bfad, itnim->state);
1135 switch (itnim->state) {
1136 case ITNIM_STATE_ONLINE:
1137 if (!itnim->fc_rport) {
1138 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1139 bfad_im_fc_rport_add(im_port, itnim);
1140 spin_lock_irqsave(&bfad->bfad_lock, flags);
1141 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1142 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1143 wwn2str(wwpn_str, wwpn);
1144 fcid2str(fcid_str, fcid);
1145 list_add_tail(&itnim->list_entry,
1146 &im_port->itnim_mapped_list);
1147 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1148 "ITNIM ONLINE Target: %d:0:%d "
1149 "FCID: %s WWPN: %s\n",
1150 im_port->shost->host_no,
1151 itnim->scsi_tgt_id,
1152 fcid_str, wwpn_str);
1153 } else {
1154 printk(KERN_WARNING
1155 "%s: itnim %llx is already in online state\n",
1156 __func__,
1157 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1158 }
1159
1160 break;
1161 case ITNIM_STATE_OFFLINE_PENDING:
1162 itnim->state = ITNIM_STATE_OFFLINE;
1163 if (itnim->fc_rport) {
1164 fc_rport = itnim->fc_rport;
1165 ((struct bfad_itnim_data_s *)
1166 fc_rport->dd_data)->itnim = NULL;
1167 itnim->fc_rport = NULL;
1168 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1169 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1170 fc_rport->dev_loss_tmo =
1171 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1172 fc_remote_port_delete(fc_rport);
1173 spin_lock_irqsave(&bfad->bfad_lock, flags);
1174 }
1175 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1176 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1177 wwn2str(wwpn_str, wwpn);
1178 fcid2str(fcid_str, fcid);
1179 list_del(&itnim->list_entry);
1180 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1181 "ITNIM OFFLINE Target: %d:0:%d "
1182 "FCID: %s WWPN: %s\n",
1183 im_port->shost->host_no,
1184 itnim->scsi_tgt_id,
1185 fcid_str, wwpn_str);
1186 }
1187 break;
1188 case ITNIM_STATE_FREE:
1189 if (itnim->fc_rport) {
1190 fc_rport = itnim->fc_rport;
1191 ((struct bfad_itnim_data_s *)
1192 fc_rport->dd_data)->itnim = NULL;
1193 itnim->fc_rport = NULL;
1194 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1195 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1196 fc_rport->dev_loss_tmo =
1197 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1198 fc_remote_port_delete(fc_rport);
1199 spin_lock_irqsave(&bfad->bfad_lock, flags);
1200 }
1201 list_del(&itnim->list_entry);
1202 }
1203
1204 kfree(itnim);
1205 break;
1206 default:
1207 WARN_ON(1);
1208 break;
1209 }
1210
1211 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1212}
1213
1214
1215
1216
1217static int
1218bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1219{
1220 struct bfad_im_port_s *im_port =
1221 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1222 struct bfad_s *bfad = im_port->bfad;
1223 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1224 struct bfad_itnim_s *itnim;
1225 struct bfa_ioim_s *hal_io;
1226 unsigned long flags;
1227 int rc;
1228 int sg_cnt = 0;
1229 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1230
1231 rc = fc_remote_port_chkready(rport);
1232 if (rc) {
1233 cmnd->result = rc;
1234 done(cmnd);
1235 return 0;
1236 }
1237
1238 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1239 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1240 cmnd->result = DID_NO_CONNECT << 16;
1241 else
1242 cmnd->result = DID_REQUEUE << 16;
1243 done(cmnd);
1244 return 0;
1245 }
1246
1247 sg_cnt = scsi_dma_map(cmnd);
1248 if (sg_cnt < 0)
1249 return SCSI_MLQUEUE_HOST_BUSY;
1250
1251 cmnd->scsi_done = done;
1252
1253 spin_lock_irqsave(&bfad->bfad_lock, flags);
1254 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1255 printk(KERN_WARNING
1256 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1257 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1258 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1259 goto out_fail_cmd;
1260 }
1261
1262
1263 itnim = itnim_data->itnim;
1264 if (!itnim) {
1265 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1266 goto out_fail_cmd;
1267 }
1268
1269 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1270 itnim->bfa_itnim, sg_cnt);
1271 if (!hal_io) {
1272 printk(KERN_WARNING "hal_io failure\n");
1273 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1274 scsi_dma_unmap(cmnd);
1275 return SCSI_MLQUEUE_HOST_BUSY;
1276 }
1277
1278 cmnd->host_scribble = (char *)hal_io;
1279 bfa_ioim_start(hal_io);
1280 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1281
1282 return 0;
1283
1284out_fail_cmd:
1285 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1286 scsi_dma_unmap(cmnd);
1287 if (done)
1288 done(cmnd);
1289
1290 return 0;
1291}
1292
1293static DEF_SCSI_QCMD(bfad_im_queuecommand)
1294
1295void
1296bfad_rport_online_wait(struct bfad_s *bfad)
1297{
1298 int i;
1299 int rport_delay = 10;
1300
1301 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1302 && i < bfa_linkup_delay; i++) {
1303 set_current_state(TASK_UNINTERRUPTIBLE);
1304 schedule_timeout(HZ);
1305 }
1306
1307 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1308 rport_delay = rport_delay < bfa_linkup_delay ?
1309 rport_delay : bfa_linkup_delay;
1310 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1311 && i < rport_delay; i++) {
1312 set_current_state(TASK_UNINTERRUPTIBLE);
1313 schedule_timeout(HZ);
1314 }
1315
1316 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1317 set_current_state(TASK_UNINTERRUPTIBLE);
1318 schedule_timeout(rport_delay * HZ);
1319 }
1320 }
1321}
1322
1323int
1324bfad_get_linkup_delay(struct bfad_s *bfad)
1325{
1326 u8 nwwns = 0;
1327 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1328 int linkup_delay;
1329
1330
1331
1332
1333
1334
1335
1336
1337 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1338
1339 if (nwwns > 0)
1340
1341 linkup_delay = 30;
1342 else
1343
1344 linkup_delay = 0;
1345
1346 return linkup_delay;
1347}
1348