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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
4 * Copyright (c) 2014- QLogic Corporation.
5 * All rights reserved
6 * www.qlogic.com
7 *
8 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
9 */
10
11/*
12 * bfad_im.c Linux driver IM module.
13 */
14
15#include <linux/export.h>
16
17#include "bfad_drv.h"
18#include "bfad_im.h"
19#include "bfa_fcs.h"
20
21BFA_TRC_FILE(LDRV, IM);
22
23DEFINE_IDR(bfad_im_port_index);
24struct scsi_transport_template *bfad_im_scsi_transport_template;
25struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
26static void bfad_im_itnim_work_handler(struct work_struct *work);
27static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
28static int bfad_im_slave_alloc(struct scsi_device *sdev);
29static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
30 struct bfad_itnim_s *itnim);
31
32void
33bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
34 enum bfi_ioim_status io_status, u8 scsi_status,
35 int sns_len, u8 *sns_info, s32 residue)
36{
37 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
38 struct bfad_s *bfad = drv;
39 struct bfad_itnim_data_s *itnim_data;
40 struct bfad_itnim_s *itnim;
41 u8 host_status = DID_OK;
42
43 switch (io_status) {
44 case BFI_IOIM_STS_OK:
45 bfa_trc(bfad, scsi_status);
46 scsi_set_resid(cmnd, 0);
47
48 if (sns_len > 0) {
49 bfa_trc(bfad, sns_len);
50 if (sns_len > SCSI_SENSE_BUFFERSIZE)
51 sns_len = SCSI_SENSE_BUFFERSIZE;
52 memcpy(cmnd->sense_buffer, sns_info, sns_len);
53 }
54
55 if (residue > 0) {
56 bfa_trc(bfad, residue);
57 scsi_set_resid(cmnd, residue);
58 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
59 (scsi_bufflen(cmnd) - residue) <
60 cmnd->underflow) {
61 bfa_trc(bfad, 0);
62 host_status = DID_ERROR;
63 }
64 }
65 cmnd->result = host_status << 16 | scsi_status;
66
67 break;
68
69 case BFI_IOIM_STS_TIMEDOUT:
70 cmnd->result = DID_TIME_OUT << 16;
71 break;
72 case BFI_IOIM_STS_PATHTOV:
73 cmnd->result = DID_TRANSPORT_DISRUPTED << 16;
74 break;
75 default:
76 cmnd->result = DID_ERROR << 16;
77 }
78
79 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
80 if (cmnd->device->host != NULL)
81 scsi_dma_unmap(cmnd);
82
83 cmnd->host_scribble = NULL;
84 bfa_trc(bfad, cmnd->result);
85
86 itnim_data = cmnd->device->hostdata;
87 if (itnim_data) {
88 itnim = itnim_data->itnim;
89 if (!cmnd->result && itnim &&
90 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
91 /* Queue depth adjustment for good status completion */
92 bfad_ramp_up_qdepth(itnim, cmnd->device);
93 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
94 /* qfull handling */
95 bfad_handle_qfull(itnim, cmnd->device);
96 }
97 }
98
99 scsi_done(cmnd);
100}
101
102void
103bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
104{
105 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
106 struct bfad_itnim_data_s *itnim_data;
107 struct bfad_itnim_s *itnim;
108
109 cmnd->result = DID_OK << 16 | SAM_STAT_GOOD;
110
111 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
112 if (cmnd->device->host != NULL)
113 scsi_dma_unmap(cmnd);
114
115 cmnd->host_scribble = NULL;
116
117 /* Queue depth adjustment */
118 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
119 itnim_data = cmnd->device->hostdata;
120 if (itnim_data) {
121 itnim = itnim_data->itnim;
122 if (itnim)
123 bfad_ramp_up_qdepth(itnim, cmnd->device);
124 }
125 }
126
127 scsi_done(cmnd);
128}
129
130void
131bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
132{
133 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
134 struct bfad_s *bfad = drv;
135
136 cmnd->result = DID_ERROR << 16;
137
138 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
139 if (cmnd->device->host != NULL)
140 scsi_dma_unmap(cmnd);
141
142 bfa_trc(bfad, cmnd->result);
143 cmnd->host_scribble = NULL;
144}
145
146void
147bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
148 enum bfi_tskim_status tsk_status)
149{
150 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
151 wait_queue_head_t *wq;
152
153 bfad_priv(cmnd)->status |= tsk_status << 1;
154 set_bit(IO_DONE_BIT, &bfad_priv(cmnd)->status);
155 wq = bfad_priv(cmnd)->wq;
156 bfad_priv(cmnd)->wq = NULL;
157
158 if (wq)
159 wake_up(wq);
160}
161
162/*
163 * Scsi_Host_template SCSI host template
164 */
165/*
166 * Scsi_Host template entry, returns BFAD PCI info.
167 */
168static const char *
169bfad_im_info(struct Scsi_Host *shost)
170{
171 static char bfa_buf[256];
172 struct bfad_im_port_s *im_port =
173 (struct bfad_im_port_s *) shost->hostdata[0];
174 struct bfad_s *bfad = im_port->bfad;
175
176 memset(bfa_buf, 0, sizeof(bfa_buf));
177 snprintf(bfa_buf, sizeof(bfa_buf),
178 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",
179 bfad->pci_name, BFAD_DRIVER_VERSION);
180
181 return bfa_buf;
182}
183
184/*
185 * Scsi_Host template entry, aborts the specified SCSI command.
186 *
187 * Returns: SUCCESS or FAILED.
188 */
189static int
190bfad_im_abort_handler(struct scsi_cmnd *cmnd)
191{
192 struct Scsi_Host *shost = cmnd->device->host;
193 struct bfad_im_port_s *im_port =
194 (struct bfad_im_port_s *) shost->hostdata[0];
195 struct bfad_s *bfad = im_port->bfad;
196 struct bfa_ioim_s *hal_io;
197 unsigned long flags;
198 u32 timeout;
199 int rc = FAILED;
200
201 spin_lock_irqsave(&bfad->bfad_lock, flags);
202 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
203 if (!hal_io) {
204 /* IO has been completed, return success */
205 rc = SUCCESS;
206 goto out;
207 }
208 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
209 rc = FAILED;
210 goto out;
211 }
212
213 bfa_trc(bfad, hal_io->iotag);
214 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
215 "scsi%d: abort cmnd %p iotag %x\n",
216 im_port->shost->host_no, cmnd, hal_io->iotag);
217 (void) bfa_ioim_abort(hal_io);
218 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
219
220 /* Need to wait until the command get aborted */
221 timeout = 10;
222 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
223 set_current_state(TASK_UNINTERRUPTIBLE);
224 schedule_timeout(timeout);
225 if (timeout < 4 * HZ)
226 timeout *= 2;
227 }
228
229 scsi_done(cmnd);
230 bfa_trc(bfad, hal_io->iotag);
231 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
232 "scsi%d: complete abort 0x%p iotag 0x%x\n",
233 im_port->shost->host_no, cmnd, hal_io->iotag);
234 return SUCCESS;
235out:
236 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
237 return rc;
238}
239
240static bfa_status_t
241bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
242 struct bfad_itnim_s *itnim)
243{
244 struct bfa_tskim_s *tskim;
245 struct bfa_itnim_s *bfa_itnim;
246 bfa_status_t rc = BFA_STATUS_OK;
247 struct scsi_lun scsilun;
248
249 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
250 if (!tskim) {
251 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
252 "target reset, fail to allocate tskim\n");
253 rc = BFA_STATUS_FAILED;
254 goto out;
255 }
256
257 /*
258 * Set host_scribble to NULL to avoid aborting a task command if
259 * happens.
260 */
261 cmnd->host_scribble = NULL;
262 bfad_priv(cmnd)->status = 0;
263 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
264 /*
265 * bfa_itnim can be NULL if the port gets disconnected and the bfa
266 * and fcs layers have cleaned up their nexus with the targets and
267 * the same has not been cleaned up by the shim
268 */
269 if (bfa_itnim == NULL) {
270 bfa_tskim_free(tskim);
271 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
272 "target reset, bfa_itnim is NULL\n");
273 rc = BFA_STATUS_FAILED;
274 goto out;
275 }
276
277 memset(&scsilun, 0, sizeof(scsilun));
278 bfa_tskim_start(tskim, bfa_itnim, scsilun,
279 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
280out:
281 return rc;
282}
283
284/*
285 * Scsi_Host template entry, resets a LUN and abort its all commands.
286 *
287 * Returns: SUCCESS or FAILED.
288 *
289 */
290static int
291bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
292{
293 struct Scsi_Host *shost = cmnd->device->host;
294 struct bfad_im_port_s *im_port =
295 (struct bfad_im_port_s *) shost->hostdata[0];
296 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
297 struct bfad_s *bfad = im_port->bfad;
298 struct bfa_tskim_s *tskim;
299 struct bfad_itnim_s *itnim;
300 struct bfa_itnim_s *bfa_itnim;
301 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
302 int rc = SUCCESS;
303 unsigned long flags;
304 enum bfi_tskim_status task_status;
305 struct scsi_lun scsilun;
306
307 spin_lock_irqsave(&bfad->bfad_lock, flags);
308 itnim = itnim_data->itnim;
309 if (!itnim) {
310 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
311 rc = FAILED;
312 goto out;
313 }
314
315 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
316 if (!tskim) {
317 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
318 "LUN reset, fail to allocate tskim");
319 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
320 rc = FAILED;
321 goto out;
322 }
323
324 /*
325 * Set host_scribble to NULL to avoid aborting a task command
326 * if happens.
327 */
328 cmnd->host_scribble = NULL;
329 bfad_priv(cmnd)->wq = &wq;
330 bfad_priv(cmnd)->status = 0;
331 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
332 /*
333 * bfa_itnim can be NULL if the port gets disconnected and the bfa
334 * and fcs layers have cleaned up their nexus with the targets and
335 * the same has not been cleaned up by the shim
336 */
337 if (bfa_itnim == NULL) {
338 bfa_tskim_free(tskim);
339 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
340 "lun reset, bfa_itnim is NULL\n");
341 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
342 rc = FAILED;
343 goto out;
344 }
345 int_to_scsilun(cmnd->device->lun, &scsilun);
346 bfa_tskim_start(tskim, bfa_itnim, scsilun,
347 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
348 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
349
350 wait_event(wq, test_bit(IO_DONE_BIT, &bfad_priv(cmnd)->status));
351
352 task_status = bfad_priv(cmnd)->status >> 1;
353 if (task_status != BFI_TSKIM_STS_OK) {
354 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
355 "LUN reset failure, status: %d\n", task_status);
356 rc = FAILED;
357 }
358
359out:
360 return rc;
361}
362
363/*
364 * Scsi_Host template entry, resets the target and abort all commands.
365 */
366static int
367bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
368{
369 struct Scsi_Host *shost = cmnd->device->host;
370 struct scsi_target *starget = scsi_target(cmnd->device);
371 struct bfad_im_port_s *im_port =
372 (struct bfad_im_port_s *) shost->hostdata[0];
373 struct bfad_s *bfad = im_port->bfad;
374 struct bfad_itnim_s *itnim;
375 unsigned long flags;
376 u32 rc, rtn = FAILED;
377 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
378 enum bfi_tskim_status task_status;
379
380 spin_lock_irqsave(&bfad->bfad_lock, flags);
381 itnim = bfad_get_itnim(im_port, starget->id);
382 if (itnim) {
383 bfad_priv(cmnd)->wq = &wq;
384 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
385 if (rc == BFA_STATUS_OK) {
386 /* wait target reset to complete */
387 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
388 wait_event(wq, test_bit(IO_DONE_BIT,
389 &bfad_priv(cmnd)->status));
390 spin_lock_irqsave(&bfad->bfad_lock, flags);
391
392 task_status = bfad_priv(cmnd)->status >> 1;
393 if (task_status != BFI_TSKIM_STS_OK)
394 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
395 "target reset failure,"
396 " status: %d\n", task_status);
397 else
398 rtn = SUCCESS;
399 }
400 }
401 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
402
403 return rtn;
404}
405
406/*
407 * Scsi_Host template entry slave_destroy.
408 */
409static void
410bfad_im_slave_destroy(struct scsi_device *sdev)
411{
412 sdev->hostdata = NULL;
413 return;
414}
415
416/*
417 * BFA FCS itnim callbacks
418 */
419
420/*
421 * BFA FCS itnim alloc callback, after successful PRLI
422 * Context: Interrupt
423 */
424int
425bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
426 struct bfad_itnim_s **itnim_drv)
427{
428 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
429 if (*itnim_drv == NULL)
430 return -ENOMEM;
431
432 (*itnim_drv)->im = bfad->im;
433 *itnim = &(*itnim_drv)->fcs_itnim;
434 (*itnim_drv)->state = ITNIM_STATE_NONE;
435
436 /*
437 * Initiaze the itnim_work
438 */
439 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
440 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
441 return 0;
442}
443
444/*
445 * BFA FCS itnim free callback.
446 * Context: Interrupt. bfad_lock is held
447 */
448void
449bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
450{
451 struct bfad_port_s *port;
452 wwn_t wwpn;
453 u32 fcid;
454 char wwpn_str[32], fcid_str[16];
455 struct bfad_im_s *im = itnim_drv->im;
456
457 /* online to free state transtion should not happen */
458 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
459
460 itnim_drv->queue_work = 1;
461 /* offline request is not yet done, use the same request to free */
462 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
463 itnim_drv->queue_work = 0;
464
465 itnim_drv->state = ITNIM_STATE_FREE;
466 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
467 itnim_drv->im_port = port->im_port;
468 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
469 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
470 wwn2str(wwpn_str, wwpn);
471 fcid2str(fcid_str, fcid);
472 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
473 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
474 port->im_port->shost->host_no,
475 fcid_str, wwpn_str);
476
477 /* ITNIM processing */
478 if (itnim_drv->queue_work)
479 queue_work(im->drv_workq, &itnim_drv->itnim_work);
480}
481
482/*
483 * BFA FCS itnim online callback.
484 * Context: Interrupt. bfad_lock is held
485 */
486void
487bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
488{
489 struct bfad_port_s *port;
490 struct bfad_im_s *im = itnim_drv->im;
491
492 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
493 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
494 itnim_drv->state = ITNIM_STATE_ONLINE;
495 itnim_drv->queue_work = 1;
496 itnim_drv->im_port = port->im_port;
497
498 /* ITNIM processing */
499 if (itnim_drv->queue_work)
500 queue_work(im->drv_workq, &itnim_drv->itnim_work);
501}
502
503/*
504 * BFA FCS itnim offline callback.
505 * Context: Interrupt. bfad_lock is held
506 */
507void
508bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
509{
510 struct bfad_port_s *port;
511 struct bfad_s *bfad;
512 struct bfad_im_s *im = itnim_drv->im;
513
514 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
515 bfad = port->bfad;
516 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
517 (port->flags & BFAD_PORT_DELETE)) {
518 itnim_drv->state = ITNIM_STATE_OFFLINE;
519 return;
520 }
521 itnim_drv->im_port = port->im_port;
522 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
523 itnim_drv->queue_work = 1;
524
525 /* ITNIM processing */
526 if (itnim_drv->queue_work)
527 queue_work(im->drv_workq, &itnim_drv->itnim_work);
528}
529
530/*
531 * Allocate a Scsi_Host for a port.
532 */
533int
534bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
535 struct device *dev)
536{
537 struct bfad_im_port_pointer *im_portp;
538 int error;
539
540 mutex_lock(&bfad_mutex);
541 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
542 if (error < 0) {
543 mutex_unlock(&bfad_mutex);
544 printk(KERN_WARNING "idr_alloc failure\n");
545 goto out;
546 }
547 im_port->idr_id = error;
548 mutex_unlock(&bfad_mutex);
549
550 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
551 if (!im_port->shost) {
552 error = 1;
553 goto out_free_idr;
554 }
555
556 im_portp = shost_priv(im_port->shost);
557 im_portp->p = im_port;
558 im_port->shost->unique_id = im_port->idr_id;
559 im_port->shost->this_id = -1;
560 im_port->shost->max_id = MAX_FCP_TARGET;
561 im_port->shost->max_lun = MAX_FCP_LUN;
562 im_port->shost->max_cmd_len = 16;
563 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
564 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
565 im_port->shost->transportt = bfad_im_scsi_transport_template;
566 else
567 im_port->shost->transportt =
568 bfad_im_scsi_vport_transport_template;
569
570 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
571 if (error) {
572 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
573 goto out_fc_rel;
574 }
575
576 return 0;
577
578out_fc_rel:
579 scsi_host_put(im_port->shost);
580 im_port->shost = NULL;
581out_free_idr:
582 mutex_lock(&bfad_mutex);
583 idr_remove(&bfad_im_port_index, im_port->idr_id);
584 mutex_unlock(&bfad_mutex);
585out:
586 return error;
587}
588
589void
590bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
591{
592 bfa_trc(bfad, bfad->inst_no);
593 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
594 im_port->shost->host_no);
595
596 fc_remove_host(im_port->shost);
597
598 scsi_remove_host(im_port->shost);
599 scsi_host_put(im_port->shost);
600
601 mutex_lock(&bfad_mutex);
602 idr_remove(&bfad_im_port_index, im_port->idr_id);
603 mutex_unlock(&bfad_mutex);
604}
605
606static void
607bfad_im_port_delete_handler(struct work_struct *work)
608{
609 struct bfad_im_port_s *im_port =
610 container_of(work, struct bfad_im_port_s, port_delete_work);
611
612 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
613 im_port->flags |= BFAD_PORT_DELETE;
614 fc_vport_terminate(im_port->fc_vport);
615 }
616}
617
618bfa_status_t
619bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
620{
621 int rc = BFA_STATUS_OK;
622 struct bfad_im_port_s *im_port;
623
624 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
625 if (im_port == NULL) {
626 rc = BFA_STATUS_ENOMEM;
627 goto ext;
628 }
629 port->im_port = im_port;
630 im_port->port = port;
631 im_port->bfad = bfad;
632
633 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
634 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
635 INIT_LIST_HEAD(&im_port->binding_list);
636
637ext:
638 return rc;
639}
640
641void
642bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
643{
644 struct bfad_im_port_s *im_port = port->im_port;
645
646 queue_work(bfad->im->drv_workq,
647 &im_port->port_delete_work);
648}
649
650void
651bfad_im_port_clean(struct bfad_im_port_s *im_port)
652{
653 struct bfad_fcp_binding *bp, *bp_new;
654 unsigned long flags;
655 struct bfad_s *bfad = im_port->bfad;
656
657 spin_lock_irqsave(&bfad->bfad_lock, flags);
658 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
659 list_entry) {
660 list_del(&bp->list_entry);
661 kfree(bp);
662 }
663
664 /* the itnim_mapped_list must be empty at this time */
665 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
666
667 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
668}
669
670static void bfad_aen_im_notify_handler(struct work_struct *work)
671{
672 struct bfad_im_s *im =
673 container_of(work, struct bfad_im_s, aen_im_notify_work);
674 struct bfa_aen_entry_s *aen_entry;
675 struct bfad_s *bfad = im->bfad;
676 struct Scsi_Host *shost = bfad->pport.im_port->shost;
677 void *event_data;
678 unsigned long flags;
679
680 while (!list_empty(&bfad->active_aen_q)) {
681 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
682 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
683 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
684 event_data = (char *)aen_entry + sizeof(struct list_head);
685 fc_host_post_vendor_event(shost, fc_get_event_number(),
686 sizeof(struct bfa_aen_entry_s) -
687 sizeof(struct list_head),
688 (char *)event_data, BFAD_NL_VENDOR_ID);
689 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
690 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
691 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
692 }
693}
694
695bfa_status_t
696bfad_im_probe(struct bfad_s *bfad)
697{
698 struct bfad_im_s *im;
699
700 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
701 if (im == NULL)
702 return BFA_STATUS_ENOMEM;
703
704 bfad->im = im;
705 im->bfad = bfad;
706
707 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
708 kfree(im);
709 return BFA_STATUS_FAILED;
710 }
711
712 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
713 return BFA_STATUS_OK;
714}
715
716void
717bfad_im_probe_undo(struct bfad_s *bfad)
718{
719 if (bfad->im) {
720 bfad_destroy_workq(bfad->im);
721 kfree(bfad->im);
722 bfad->im = NULL;
723 }
724}
725
726struct Scsi_Host *
727bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
728{
729 struct scsi_host_template *sht;
730
731 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
732 sht = &bfad_im_scsi_host_template;
733 else
734 sht = &bfad_im_vport_template;
735
736 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
737 sht->max_sectors = max_xfer_size << 1;
738
739 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
740
741 return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));
742}
743
744void
745bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
746{
747 if (!(im_port->flags & BFAD_PORT_DELETE))
748 flush_workqueue(bfad->im->drv_workq);
749 bfad_im_scsi_host_free(im_port->bfad, im_port);
750 bfad_im_port_clean(im_port);
751 kfree(im_port);
752}
753
754void
755bfad_destroy_workq(struct bfad_im_s *im)
756{
757 if (im && im->drv_workq) {
758 destroy_workqueue(im->drv_workq);
759 im->drv_workq = NULL;
760 }
761}
762
763bfa_status_t
764bfad_thread_workq(struct bfad_s *bfad)
765{
766 struct bfad_im_s *im = bfad->im;
767
768 bfa_trc(bfad, 0);
769 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
770 bfad->inst_no);
771 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
772 if (!im->drv_workq)
773 return BFA_STATUS_FAILED;
774
775 return BFA_STATUS_OK;
776}
777
778/*
779 * Scsi_Host template entry.
780 *
781 * Description:
782 * OS entry point to adjust the queue_depths on a per-device basis.
783 * Called once per device during the bus scan.
784 * Return non-zero if fails.
785 */
786static int
787bfad_im_slave_configure(struct scsi_device *sdev)
788{
789 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
790 return 0;
791}
792
793struct 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 .cmd_size = sizeof(struct bfad_cmd_priv),
799 .eh_timed_out = fc_eh_timed_out,
800 .eh_abort_handler = bfad_im_abort_handler,
801 .eh_device_reset_handler = bfad_im_reset_lun_handler,
802 .eh_target_reset_handler = bfad_im_reset_target_handler,
803
804 .slave_alloc = bfad_im_slave_alloc,
805 .slave_configure = bfad_im_slave_configure,
806 .slave_destroy = bfad_im_slave_destroy,
807
808 .this_id = -1,
809 .sg_tablesize = BFAD_IO_MAX_SGE,
810 .cmd_per_lun = 3,
811 .shost_groups = bfad_im_host_groups,
812 .max_sectors = BFAD_MAX_SECTORS,
813 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
814};
815
816struct scsi_host_template bfad_im_vport_template = {
817 .module = THIS_MODULE,
818 .name = BFAD_DRIVER_NAME,
819 .info = bfad_im_info,
820 .queuecommand = bfad_im_queuecommand,
821 .cmd_size = sizeof(struct bfad_cmd_priv),
822 .eh_timed_out = fc_eh_timed_out,
823 .eh_abort_handler = bfad_im_abort_handler,
824 .eh_device_reset_handler = bfad_im_reset_lun_handler,
825 .eh_target_reset_handler = bfad_im_reset_target_handler,
826
827 .slave_alloc = bfad_im_slave_alloc,
828 .slave_configure = bfad_im_slave_configure,
829 .slave_destroy = bfad_im_slave_destroy,
830
831 .this_id = -1,
832 .sg_tablesize = BFAD_IO_MAX_SGE,
833 .cmd_per_lun = 3,
834 .shost_groups = bfad_im_vport_groups,
835 .max_sectors = BFAD_MAX_SECTORS,
836};
837
838bfa_status_t
839bfad_im_module_init(void)
840{
841 bfad_im_scsi_transport_template =
842 fc_attach_transport(&bfad_im_fc_function_template);
843 if (!bfad_im_scsi_transport_template)
844 return BFA_STATUS_ENOMEM;
845
846 bfad_im_scsi_vport_transport_template =
847 fc_attach_transport(&bfad_im_vport_fc_function_template);
848 if (!bfad_im_scsi_vport_transport_template) {
849 fc_release_transport(bfad_im_scsi_transport_template);
850 return BFA_STATUS_ENOMEM;
851 }
852
853 return BFA_STATUS_OK;
854}
855
856void
857bfad_im_module_exit(void)
858{
859 if (bfad_im_scsi_transport_template)
860 fc_release_transport(bfad_im_scsi_transport_template);
861
862 if (bfad_im_scsi_vport_transport_template)
863 fc_release_transport(bfad_im_scsi_vport_transport_template);
864
865 idr_destroy(&bfad_im_port_index);
866}
867
868void
869bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
870{
871 struct scsi_device *tmp_sdev;
872
873 if (((jiffies - itnim->last_ramp_up_time) >
874 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
875 ((jiffies - itnim->last_queue_full_time) >
876 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
877 shost_for_each_device(tmp_sdev, sdev->host) {
878 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
879 if (tmp_sdev->id != sdev->id)
880 continue;
881 scsi_change_queue_depth(tmp_sdev,
882 tmp_sdev->queue_depth + 1);
883
884 itnim->last_ramp_up_time = jiffies;
885 }
886 }
887 }
888}
889
890void
891bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
892{
893 struct scsi_device *tmp_sdev;
894
895 itnim->last_queue_full_time = jiffies;
896
897 shost_for_each_device(tmp_sdev, sdev->host) {
898 if (tmp_sdev->id != sdev->id)
899 continue;
900 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
901 }
902}
903
904struct bfad_itnim_s *
905bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
906{
907 struct bfad_itnim_s *itnim = NULL;
908
909 /* Search the mapped list for this target ID */
910 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
911 if (id == itnim->scsi_tgt_id)
912 return itnim;
913 }
914
915 return NULL;
916}
917
918/*
919 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
920 * Has the logic to query the LUN Mask database to check if this LUN needs to
921 * be made visible to the SCSI mid-layer or not.
922 *
923 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
924 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
925 */
926static int
927bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
928 struct fc_rport *rport)
929{
930 struct bfad_itnim_data_s *itnim_data =
931 (struct bfad_itnim_data_s *) rport->dd_data;
932 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
933 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
934 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
935 int i = 0, ret = -ENXIO;
936
937 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
938 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
939 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
940 lun_list[i].rp_tag == bfa_rport->rport_tag &&
941 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
942 ret = BFA_STATUS_OK;
943 break;
944 }
945 }
946 return ret;
947}
948
949/*
950 * Scsi_Host template entry slave_alloc
951 */
952static int
953bfad_im_slave_alloc(struct scsi_device *sdev)
954{
955 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
956 struct bfad_itnim_data_s *itnim_data;
957 struct bfa_s *bfa;
958
959 if (!rport || fc_remote_port_chkready(rport))
960 return -ENXIO;
961
962 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
963 bfa = itnim_data->itnim->bfa_itnim->bfa;
964
965 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
966 /*
967 * We should not mask LUN 0 - since this will translate
968 * to no LUN / TARGET for SCSI ml resulting no scan.
969 */
970 if (sdev->lun == 0) {
971 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
972 BLIST_SPARSELUN;
973 goto done;
974 }
975
976 /*
977 * Query LUN Mask configuration - to expose this LUN
978 * to the SCSI mid-layer or to mask it.
979 */
980 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
981 BFA_STATUS_OK)
982 return -ENXIO;
983 }
984done:
985 sdev->hostdata = rport->dd_data;
986
987 return 0;
988}
989
990u32
991bfad_im_supported_speeds(struct bfa_s *bfa)
992{
993 struct bfa_ioc_attr_s *ioc_attr;
994 u32 supported_speed = 0;
995
996 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
997 if (!ioc_attr)
998 return 0;
999
1000 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1001 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1002 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1003 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1004 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1005 if (ioc_attr->adapter_attr.is_mezz) {
1006 supported_speed |= FC_PORTSPEED_8GBIT |
1007 FC_PORTSPEED_4GBIT |
1008 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1009 } else {
1010 supported_speed |= FC_PORTSPEED_8GBIT |
1011 FC_PORTSPEED_4GBIT |
1012 FC_PORTSPEED_2GBIT;
1013 }
1014 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1015 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1016 FC_PORTSPEED_1GBIT;
1017 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1018 supported_speed |= FC_PORTSPEED_10GBIT;
1019 }
1020 kfree(ioc_attr);
1021 return supported_speed;
1022}
1023
1024void
1025bfad_fc_host_init(struct bfad_im_port_s *im_port)
1026{
1027 struct Scsi_Host *host = im_port->shost;
1028 struct bfad_s *bfad = im_port->bfad;
1029 struct bfad_port_s *port = im_port->port;
1030 char symname[BFA_SYMNAME_MAXLEN];
1031 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1032
1033 fc_host_node_name(host) =
1034 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1035 fc_host_port_name(host) =
1036 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1037 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1038
1039 fc_host_supported_classes(host) = FC_COS_CLASS3;
1040
1041 memset(fc_host_supported_fc4s(host), 0,
1042 sizeof(fc_host_supported_fc4s(host)));
1043 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1044 /* For FCP type 0x08 */
1045 fc_host_supported_fc4s(host)[2] = 1;
1046 /* For fibre channel services type 0x20 */
1047 fc_host_supported_fc4s(host)[7] = 1;
1048
1049 strscpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1050 BFA_SYMNAME_MAXLEN);
1051 sprintf(fc_host_symbolic_name(host), "%s", symname);
1052
1053 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1054 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1055}
1056
1057static void
1058bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1059{
1060 struct fc_rport_identifiers rport_ids;
1061 struct fc_rport *fc_rport;
1062 struct bfad_itnim_data_s *itnim_data;
1063
1064 rport_ids.node_name =
1065 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1066 rport_ids.port_name =
1067 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1068 rport_ids.port_id =
1069 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1070 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1071
1072 itnim->fc_rport = fc_rport =
1073 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1074
1075 if (!fc_rport)
1076 return;
1077
1078 fc_rport->maxframe_size =
1079 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1080 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1081
1082 itnim_data = fc_rport->dd_data;
1083 itnim_data->itnim = itnim;
1084
1085 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1086
1087 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1088 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1089
1090 if ((fc_rport->scsi_target_id != -1)
1091 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1092 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1093
1094 itnim->channel = fc_rport->channel;
1095
1096 return;
1097}
1098
1099/*
1100 * Work queue handler using FC transport service
1101* Context: kernel
1102 */
1103static void
1104bfad_im_itnim_work_handler(struct work_struct *work)
1105{
1106 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1107 itnim_work);
1108 struct bfad_im_s *im = itnim->im;
1109 struct bfad_s *bfad = im->bfad;
1110 struct bfad_im_port_s *im_port;
1111 unsigned long flags;
1112 struct fc_rport *fc_rport;
1113 wwn_t wwpn;
1114 u32 fcid;
1115 char wwpn_str[32], fcid_str[16];
1116
1117 spin_lock_irqsave(&bfad->bfad_lock, flags);
1118 im_port = itnim->im_port;
1119 bfa_trc(bfad, itnim->state);
1120 switch (itnim->state) {
1121 case ITNIM_STATE_ONLINE:
1122 if (!itnim->fc_rport) {
1123 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1124 bfad_im_fc_rport_add(im_port, itnim);
1125 spin_lock_irqsave(&bfad->bfad_lock, flags);
1126 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1127 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1128 wwn2str(wwpn_str, wwpn);
1129 fcid2str(fcid_str, fcid);
1130 list_add_tail(&itnim->list_entry,
1131 &im_port->itnim_mapped_list);
1132 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1133 "ITNIM ONLINE Target: %d:0:%d "
1134 "FCID: %s WWPN: %s\n",
1135 im_port->shost->host_no,
1136 itnim->scsi_tgt_id,
1137 fcid_str, wwpn_str);
1138 } else {
1139 printk(KERN_WARNING
1140 "%s: itnim %llx is already in online state\n",
1141 __func__,
1142 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1143 }
1144
1145 break;
1146 case ITNIM_STATE_OFFLINE_PENDING:
1147 itnim->state = ITNIM_STATE_OFFLINE;
1148 if (itnim->fc_rport) {
1149 fc_rport = itnim->fc_rport;
1150 ((struct bfad_itnim_data_s *)
1151 fc_rport->dd_data)->itnim = NULL;
1152 itnim->fc_rport = NULL;
1153 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1154 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1155 fc_rport->dev_loss_tmo =
1156 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1157 fc_remote_port_delete(fc_rport);
1158 spin_lock_irqsave(&bfad->bfad_lock, flags);
1159 }
1160 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1161 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1162 wwn2str(wwpn_str, wwpn);
1163 fcid2str(fcid_str, fcid);
1164 list_del(&itnim->list_entry);
1165 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1166 "ITNIM OFFLINE Target: %d:0:%d "
1167 "FCID: %s WWPN: %s\n",
1168 im_port->shost->host_no,
1169 itnim->scsi_tgt_id,
1170 fcid_str, wwpn_str);
1171 }
1172 break;
1173 case ITNIM_STATE_FREE:
1174 if (itnim->fc_rport) {
1175 fc_rport = itnim->fc_rport;
1176 ((struct bfad_itnim_data_s *)
1177 fc_rport->dd_data)->itnim = NULL;
1178 itnim->fc_rport = NULL;
1179 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1180 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1181 fc_rport->dev_loss_tmo =
1182 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1183 fc_remote_port_delete(fc_rport);
1184 spin_lock_irqsave(&bfad->bfad_lock, flags);
1185 }
1186 list_del(&itnim->list_entry);
1187 }
1188
1189 kfree(itnim);
1190 break;
1191 default:
1192 WARN_ON(1);
1193 break;
1194 }
1195
1196 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1197}
1198
1199/*
1200 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1201 */
1202static int bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd)
1203{
1204 void (*done)(struct scsi_cmnd *) = scsi_done;
1205 struct bfad_im_port_s *im_port =
1206 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1207 struct bfad_s *bfad = im_port->bfad;
1208 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1209 struct bfad_itnim_s *itnim;
1210 struct bfa_ioim_s *hal_io;
1211 unsigned long flags;
1212 int rc;
1213 int sg_cnt = 0;
1214 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1215
1216 rc = fc_remote_port_chkready(rport);
1217 if (rc) {
1218 cmnd->result = rc;
1219 done(cmnd);
1220 return 0;
1221 }
1222
1223 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1224 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1225 cmnd->result = DID_NO_CONNECT << 16;
1226 else
1227 cmnd->result = DID_REQUEUE << 16;
1228 done(cmnd);
1229 return 0;
1230 }
1231
1232 sg_cnt = scsi_dma_map(cmnd);
1233 if (sg_cnt < 0)
1234 return SCSI_MLQUEUE_HOST_BUSY;
1235
1236 spin_lock_irqsave(&bfad->bfad_lock, flags);
1237 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1238 printk(KERN_WARNING
1239 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1240 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1241 cmnd->result = DID_NO_CONNECT << 16;
1242 goto out_fail_cmd;
1243 }
1244
1245
1246 itnim = itnim_data->itnim;
1247 if (!itnim) {
1248 cmnd->result = DID_IMM_RETRY << 16;
1249 goto out_fail_cmd;
1250 }
1251
1252 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1253 itnim->bfa_itnim, sg_cnt);
1254 if (!hal_io) {
1255 printk(KERN_WARNING "hal_io failure\n");
1256 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1257 scsi_dma_unmap(cmnd);
1258 return SCSI_MLQUEUE_HOST_BUSY;
1259 }
1260
1261 cmnd->host_scribble = (char *)hal_io;
1262 bfa_ioim_start(hal_io);
1263 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1264
1265 return 0;
1266
1267out_fail_cmd:
1268 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1269 scsi_dma_unmap(cmnd);
1270 if (done)
1271 done(cmnd);
1272
1273 return 0;
1274}
1275
1276static DEF_SCSI_QCMD(bfad_im_queuecommand)
1277
1278void
1279bfad_rport_online_wait(struct bfad_s *bfad)
1280{
1281 int i;
1282 int rport_delay = 10;
1283
1284 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1285 && i < bfa_linkup_delay; i++) {
1286 set_current_state(TASK_UNINTERRUPTIBLE);
1287 schedule_timeout(HZ);
1288 }
1289
1290 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1291 rport_delay = rport_delay < bfa_linkup_delay ?
1292 rport_delay : bfa_linkup_delay;
1293 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1294 && i < rport_delay; i++) {
1295 set_current_state(TASK_UNINTERRUPTIBLE);
1296 schedule_timeout(HZ);
1297 }
1298
1299 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1300 set_current_state(TASK_UNINTERRUPTIBLE);
1301 schedule_timeout(rport_delay * HZ);
1302 }
1303 }
1304}
1305
1306int
1307bfad_get_linkup_delay(struct bfad_s *bfad)
1308{
1309 u8 nwwns = 0;
1310 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1311 int linkup_delay;
1312
1313 /*
1314 * Querying for the boot target port wwns
1315 * -- read from boot information in flash.
1316 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1317 * else => local boot machine set linkup_delay = 0
1318 */
1319
1320 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1321
1322 if (nwwns > 0)
1323 /* If Boot over SAN set linkup_delay = 30sec */
1324 linkup_delay = 30;
1325 else
1326 /* If local boot; no linkup_delay */
1327 linkup_delay = 0;
1328
1329 return linkup_delay;
1330}
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 "bfad_drv.h"
23#include "bfad_im.h"
24#include "bfa_fcs.h"
25
26BFA_TRC_FILE(LDRV, IM);
27
28DEFINE_IDR(bfad_im_port_index);
29struct scsi_transport_template *bfad_im_scsi_transport_template;
30struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
31static void bfad_im_itnim_work_handler(struct work_struct *work);
32static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
33static int bfad_im_slave_alloc(struct scsi_device *sdev);
34static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
35 struct bfad_itnim_s *itnim);
36
37void
38bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
39 enum bfi_ioim_status io_status, u8 scsi_status,
40 int sns_len, u8 *sns_info, s32 residue)
41{
42 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
43 struct bfad_s *bfad = drv;
44 struct bfad_itnim_data_s *itnim_data;
45 struct bfad_itnim_s *itnim;
46 u8 host_status = DID_OK;
47
48 switch (io_status) {
49 case BFI_IOIM_STS_OK:
50 bfa_trc(bfad, scsi_status);
51 scsi_set_resid(cmnd, 0);
52
53 if (sns_len > 0) {
54 bfa_trc(bfad, sns_len);
55 if (sns_len > SCSI_SENSE_BUFFERSIZE)
56 sns_len = SCSI_SENSE_BUFFERSIZE;
57 memcpy(cmnd->sense_buffer, sns_info, sns_len);
58 }
59
60 if (residue > 0) {
61 bfa_trc(bfad, residue);
62 scsi_set_resid(cmnd, residue);
63 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
64 (scsi_bufflen(cmnd) - residue) <
65 cmnd->underflow) {
66 bfa_trc(bfad, 0);
67 host_status = DID_ERROR;
68 }
69 }
70 cmnd->result = ScsiResult(host_status, scsi_status);
71
72 break;
73
74 case BFI_IOIM_STS_ABORTED:
75 case BFI_IOIM_STS_TIMEDOUT:
76 case BFI_IOIM_STS_PATHTOV:
77 default:
78 host_status = DID_ERROR;
79 cmnd->result = ScsiResult(host_status, 0);
80 }
81
82 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
83 if (cmnd->device->host != NULL)
84 scsi_dma_unmap(cmnd);
85
86 cmnd->host_scribble = NULL;
87 bfa_trc(bfad, cmnd->result);
88
89 itnim_data = cmnd->device->hostdata;
90 if (itnim_data) {
91 itnim = itnim_data->itnim;
92 if (!cmnd->result && itnim &&
93 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
94 /* Queue depth adjustment for good status completion */
95 bfad_ramp_up_qdepth(itnim, cmnd->device);
96 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
97 /* qfull handling */
98 bfad_handle_qfull(itnim, cmnd->device);
99 }
100 }
101
102 cmnd->scsi_done(cmnd);
103}
104
105void
106bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
107{
108 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
109 struct bfad_itnim_data_s *itnim_data;
110 struct bfad_itnim_s *itnim;
111
112 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
113
114 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
115 if (cmnd->device->host != NULL)
116 scsi_dma_unmap(cmnd);
117
118 cmnd->host_scribble = NULL;
119
120 /* Queue depth adjustment */
121 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
122 itnim_data = cmnd->device->hostdata;
123 if (itnim_data) {
124 itnim = itnim_data->itnim;
125 if (itnim)
126 bfad_ramp_up_qdepth(itnim, cmnd->device);
127 }
128 }
129
130 cmnd->scsi_done(cmnd);
131}
132
133void
134bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
135{
136 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
137 struct bfad_s *bfad = drv;
138
139 cmnd->result = ScsiResult(DID_ERROR, 0);
140
141 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
142 if (cmnd->device->host != NULL)
143 scsi_dma_unmap(cmnd);
144
145 bfa_trc(bfad, cmnd->result);
146 cmnd->host_scribble = NULL;
147}
148
149void
150bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
151 enum bfi_tskim_status tsk_status)
152{
153 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
154 wait_queue_head_t *wq;
155
156 cmnd->SCp.Status |= tsk_status << 1;
157 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
158 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
159 cmnd->SCp.ptr = NULL;
160
161 if (wq)
162 wake_up(wq);
163}
164
165/*
166 * Scsi_Host_template SCSI host template
167 */
168/*
169 * Scsi_Host template entry, returns BFAD PCI info.
170 */
171static const char *
172bfad_im_info(struct Scsi_Host *shost)
173{
174 static char bfa_buf[256];
175 struct bfad_im_port_s *im_port =
176 (struct bfad_im_port_s *) shost->hostdata[0];
177 struct bfad_s *bfad = im_port->bfad;
178
179 memset(bfa_buf, 0, sizeof(bfa_buf));
180 snprintf(bfa_buf, sizeof(bfa_buf),
181 "Brocade FC/FCOE Adapter, " "hwpath: %s driver: %s",
182 bfad->pci_name, BFAD_DRIVER_VERSION);
183
184 return bfa_buf;
185}
186
187/*
188 * Scsi_Host template entry, aborts the specified SCSI command.
189 *
190 * Returns: SUCCESS or FAILED.
191 */
192static int
193bfad_im_abort_handler(struct scsi_cmnd *cmnd)
194{
195 struct Scsi_Host *shost = cmnd->device->host;
196 struct bfad_im_port_s *im_port =
197 (struct bfad_im_port_s *) shost->hostdata[0];
198 struct bfad_s *bfad = im_port->bfad;
199 struct bfa_ioim_s *hal_io;
200 unsigned long flags;
201 u32 timeout;
202 int rc = FAILED;
203
204 spin_lock_irqsave(&bfad->bfad_lock, flags);
205 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
206 if (!hal_io) {
207 /* IO has been completed, retrun success */
208 rc = SUCCESS;
209 goto out;
210 }
211 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
212 rc = FAILED;
213 goto out;
214 }
215
216 bfa_trc(bfad, hal_io->iotag);
217 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
218 "scsi%d: abort cmnd %p iotag %x\n",
219 im_port->shost->host_no, cmnd, hal_io->iotag);
220 (void) bfa_ioim_abort(hal_io);
221 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
222
223 /* Need to wait until the command get aborted */
224 timeout = 10;
225 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
226 set_current_state(TASK_UNINTERRUPTIBLE);
227 schedule_timeout(timeout);
228 if (timeout < 4 * HZ)
229 timeout *= 2;
230 }
231
232 cmnd->scsi_done(cmnd);
233 bfa_trc(bfad, hal_io->iotag);
234 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
235 "scsi%d: complete abort 0x%p iotag 0x%x\n",
236 im_port->shost->host_no, cmnd, hal_io->iotag);
237 return SUCCESS;
238out:
239 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
240 return rc;
241}
242
243static bfa_status_t
244bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
245 struct bfad_itnim_s *itnim)
246{
247 struct bfa_tskim_s *tskim;
248 struct bfa_itnim_s *bfa_itnim;
249 bfa_status_t rc = BFA_STATUS_OK;
250 struct scsi_lun scsilun;
251
252 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
253 if (!tskim) {
254 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
255 "target reset, fail to allocate tskim\n");
256 rc = BFA_STATUS_FAILED;
257 goto out;
258 }
259
260 /*
261 * Set host_scribble to NULL to avoid aborting a task command if
262 * happens.
263 */
264 cmnd->host_scribble = NULL;
265 cmnd->SCp.Status = 0;
266 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
267 memset(&scsilun, 0, sizeof(scsilun));
268 bfa_tskim_start(tskim, bfa_itnim, scsilun,
269 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
270out:
271 return rc;
272}
273
274/*
275 * Scsi_Host template entry, resets a LUN and abort its all commands.
276 *
277 * Returns: SUCCESS or FAILED.
278 *
279 */
280static int
281bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
282{
283 struct Scsi_Host *shost = cmnd->device->host;
284 struct bfad_im_port_s *im_port =
285 (struct bfad_im_port_s *) shost->hostdata[0];
286 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
287 struct bfad_s *bfad = im_port->bfad;
288 struct bfa_tskim_s *tskim;
289 struct bfad_itnim_s *itnim;
290 struct bfa_itnim_s *bfa_itnim;
291 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
292 int rc = SUCCESS;
293 unsigned long flags;
294 enum bfi_tskim_status task_status;
295 struct scsi_lun scsilun;
296
297 spin_lock_irqsave(&bfad->bfad_lock, flags);
298 itnim = itnim_data->itnim;
299 if (!itnim) {
300 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
301 rc = FAILED;
302 goto out;
303 }
304
305 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
306 if (!tskim) {
307 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
308 "LUN reset, fail to allocate tskim");
309 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
310 rc = FAILED;
311 goto out;
312 }
313
314 /*
315 * Set host_scribble to NULL to avoid aborting a task command
316 * if happens.
317 */
318 cmnd->host_scribble = NULL;
319 cmnd->SCp.ptr = (char *)&wq;
320 cmnd->SCp.Status = 0;
321 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
322 int_to_scsilun(cmnd->device->lun, &scsilun);
323 bfa_tskim_start(tskim, bfa_itnim, scsilun,
324 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
325 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
326
327 wait_event(wq, test_bit(IO_DONE_BIT,
328 (unsigned long *)&cmnd->SCp.Status));
329
330 task_status = cmnd->SCp.Status >> 1;
331 if (task_status != BFI_TSKIM_STS_OK) {
332 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
333 "LUN reset failure, status: %d\n", task_status);
334 rc = FAILED;
335 }
336
337out:
338 return rc;
339}
340
341/*
342 * Scsi_Host template entry, resets the bus and abort all commands.
343 */
344static int
345bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
346{
347 struct Scsi_Host *shost = cmnd->device->host;
348 struct bfad_im_port_s *im_port =
349 (struct bfad_im_port_s *) shost->hostdata[0];
350 struct bfad_s *bfad = im_port->bfad;
351 struct bfad_itnim_s *itnim;
352 unsigned long flags;
353 u32 i, rc, err_cnt = 0;
354 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
355 enum bfi_tskim_status task_status;
356
357 spin_lock_irqsave(&bfad->bfad_lock, flags);
358 for (i = 0; i < MAX_FCP_TARGET; i++) {
359 itnim = bfad_get_itnim(im_port, i);
360 if (itnim) {
361 cmnd->SCp.ptr = (char *)&wq;
362 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
363 if (rc != BFA_STATUS_OK) {
364 err_cnt++;
365 continue;
366 }
367
368 /* wait target reset to complete */
369 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
370 wait_event(wq, test_bit(IO_DONE_BIT,
371 (unsigned long *)&cmnd->SCp.Status));
372 spin_lock_irqsave(&bfad->bfad_lock, flags);
373
374 task_status = cmnd->SCp.Status >> 1;
375 if (task_status != BFI_TSKIM_STS_OK) {
376 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
377 "target reset failure,"
378 " status: %d\n", task_status);
379 err_cnt++;
380 }
381 }
382 }
383 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
384
385 if (err_cnt)
386 return FAILED;
387
388 return SUCCESS;
389}
390
391/*
392 * Scsi_Host template entry slave_destroy.
393 */
394static void
395bfad_im_slave_destroy(struct scsi_device *sdev)
396{
397 sdev->hostdata = NULL;
398 return;
399}
400
401/*
402 * BFA FCS itnim callbacks
403 */
404
405/*
406 * BFA FCS itnim alloc callback, after successful PRLI
407 * Context: Interrupt
408 */
409void
410bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
411 struct bfad_itnim_s **itnim_drv)
412{
413 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
414 if (*itnim_drv == NULL)
415 return;
416
417 (*itnim_drv)->im = bfad->im;
418 *itnim = &(*itnim_drv)->fcs_itnim;
419 (*itnim_drv)->state = ITNIM_STATE_NONE;
420
421 /*
422 * Initiaze the itnim_work
423 */
424 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
425 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
426}
427
428/*
429 * BFA FCS itnim free callback.
430 * Context: Interrupt. bfad_lock is held
431 */
432void
433bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
434{
435 struct bfad_port_s *port;
436 wwn_t wwpn;
437 u32 fcid;
438 char wwpn_str[32], fcid_str[16];
439 struct bfad_im_s *im = itnim_drv->im;
440
441 /* online to free state transtion should not happen */
442 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
443
444 itnim_drv->queue_work = 1;
445 /* offline request is not yet done, use the same request to free */
446 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
447 itnim_drv->queue_work = 0;
448
449 itnim_drv->state = ITNIM_STATE_FREE;
450 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
451 itnim_drv->im_port = port->im_port;
452 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
453 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
454 wwn2str(wwpn_str, wwpn);
455 fcid2str(fcid_str, fcid);
456 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
457 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
458 port->im_port->shost->host_no,
459 fcid_str, wwpn_str);
460
461 /* ITNIM processing */
462 if (itnim_drv->queue_work)
463 queue_work(im->drv_workq, &itnim_drv->itnim_work);
464}
465
466/*
467 * BFA FCS itnim online callback.
468 * Context: Interrupt. bfad_lock is held
469 */
470void
471bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
472{
473 struct bfad_port_s *port;
474 struct bfad_im_s *im = itnim_drv->im;
475
476 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
477 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
478 itnim_drv->state = ITNIM_STATE_ONLINE;
479 itnim_drv->queue_work = 1;
480 itnim_drv->im_port = port->im_port;
481
482 /* ITNIM processing */
483 if (itnim_drv->queue_work)
484 queue_work(im->drv_workq, &itnim_drv->itnim_work);
485}
486
487/*
488 * BFA FCS itnim offline callback.
489 * Context: Interrupt. bfad_lock is held
490 */
491void
492bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
493{
494 struct bfad_port_s *port;
495 struct bfad_s *bfad;
496 struct bfad_im_s *im = itnim_drv->im;
497
498 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
499 bfad = port->bfad;
500 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
501 (port->flags & BFAD_PORT_DELETE)) {
502 itnim_drv->state = ITNIM_STATE_OFFLINE;
503 return;
504 }
505 itnim_drv->im_port = port->im_port;
506 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
507 itnim_drv->queue_work = 1;
508
509 /* ITNIM processing */
510 if (itnim_drv->queue_work)
511 queue_work(im->drv_workq, &itnim_drv->itnim_work);
512}
513
514/*
515 * Allocate a Scsi_Host for a port.
516 */
517int
518bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
519 struct device *dev)
520{
521 int error = 1;
522
523 mutex_lock(&bfad_mutex);
524 if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
525 mutex_unlock(&bfad_mutex);
526 printk(KERN_WARNING "idr_pre_get failure\n");
527 goto out;
528 }
529
530 error = idr_get_new(&bfad_im_port_index, im_port,
531 &im_port->idr_id);
532 if (error) {
533 mutex_unlock(&bfad_mutex);
534 printk(KERN_WARNING "idr_get_new failure\n");
535 goto out;
536 }
537
538 mutex_unlock(&bfad_mutex);
539
540 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
541 if (!im_port->shost) {
542 error = 1;
543 goto out_free_idr;
544 }
545
546 im_port->shost->hostdata[0] = (unsigned long)im_port;
547 im_port->shost->unique_id = im_port->idr_id;
548 im_port->shost->this_id = -1;
549 im_port->shost->max_id = MAX_FCP_TARGET;
550 im_port->shost->max_lun = MAX_FCP_LUN;
551 im_port->shost->max_cmd_len = 16;
552 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
553 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
554 im_port->shost->transportt = bfad_im_scsi_transport_template;
555 else
556 im_port->shost->transportt =
557 bfad_im_scsi_vport_transport_template;
558
559 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
560 if (error) {
561 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
562 goto out_fc_rel;
563 }
564
565 return 0;
566
567out_fc_rel:
568 scsi_host_put(im_port->shost);
569 im_port->shost = NULL;
570out_free_idr:
571 mutex_lock(&bfad_mutex);
572 idr_remove(&bfad_im_port_index, im_port->idr_id);
573 mutex_unlock(&bfad_mutex);
574out:
575 return error;
576}
577
578void
579bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
580{
581 bfa_trc(bfad, bfad->inst_no);
582 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
583 im_port->shost->host_no);
584
585 fc_remove_host(im_port->shost);
586
587 scsi_remove_host(im_port->shost);
588 scsi_host_put(im_port->shost);
589
590 mutex_lock(&bfad_mutex);
591 idr_remove(&bfad_im_port_index, im_port->idr_id);
592 mutex_unlock(&bfad_mutex);
593}
594
595static void
596bfad_im_port_delete_handler(struct work_struct *work)
597{
598 struct bfad_im_port_s *im_port =
599 container_of(work, struct bfad_im_port_s, port_delete_work);
600
601 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
602 im_port->flags |= BFAD_PORT_DELETE;
603 fc_vport_terminate(im_port->fc_vport);
604 }
605}
606
607bfa_status_t
608bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
609{
610 int rc = BFA_STATUS_OK;
611 struct bfad_im_port_s *im_port;
612
613 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
614 if (im_port == NULL) {
615 rc = BFA_STATUS_ENOMEM;
616 goto ext;
617 }
618 port->im_port = im_port;
619 im_port->port = port;
620 im_port->bfad = bfad;
621
622 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
623 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
624 INIT_LIST_HEAD(&im_port->binding_list);
625
626ext:
627 return rc;
628}
629
630void
631bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
632{
633 struct bfad_im_port_s *im_port = port->im_port;
634
635 queue_work(bfad->im->drv_workq,
636 &im_port->port_delete_work);
637}
638
639void
640bfad_im_port_clean(struct bfad_im_port_s *im_port)
641{
642 struct bfad_fcp_binding *bp, *bp_new;
643 unsigned long flags;
644 struct bfad_s *bfad = im_port->bfad;
645
646 spin_lock_irqsave(&bfad->bfad_lock, flags);
647 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
648 list_entry) {
649 list_del(&bp->list_entry);
650 kfree(bp);
651 }
652
653 /* the itnim_mapped_list must be empty at this time */
654 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
655
656 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
657}
658
659static void bfad_aen_im_notify_handler(struct work_struct *work)
660{
661 struct bfad_im_s *im =
662 container_of(work, struct bfad_im_s, aen_im_notify_work);
663 struct bfa_aen_entry_s *aen_entry;
664 struct bfad_s *bfad = im->bfad;
665 struct Scsi_Host *shost = bfad->pport.im_port->shost;
666 void *event_data;
667 unsigned long flags;
668
669 while (!list_empty(&bfad->active_aen_q)) {
670 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
671 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
672 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
673 event_data = (char *)aen_entry + sizeof(struct list_head);
674 fc_host_post_vendor_event(shost, fc_get_event_number(),
675 sizeof(struct bfa_aen_entry_s) -
676 sizeof(struct list_head),
677 (char *)event_data, BFAD_NL_VENDOR_ID);
678 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
679 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
680 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
681 }
682}
683
684bfa_status_t
685bfad_im_probe(struct bfad_s *bfad)
686{
687 struct bfad_im_s *im;
688 bfa_status_t rc = BFA_STATUS_OK;
689
690 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
691 if (im == NULL) {
692 rc = BFA_STATUS_ENOMEM;
693 goto ext;
694 }
695
696 bfad->im = im;
697 im->bfad = bfad;
698
699 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
700 kfree(im);
701 rc = BFA_STATUS_FAILED;
702 }
703
704 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
705ext:
706 return rc;
707}
708
709void
710bfad_im_probe_undo(struct bfad_s *bfad)
711{
712 if (bfad->im) {
713 bfad_destroy_workq(bfad->im);
714 kfree(bfad->im);
715 bfad->im = NULL;
716 }
717}
718
719struct Scsi_Host *
720bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
721{
722 struct scsi_host_template *sht;
723
724 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
725 sht = &bfad_im_scsi_host_template;
726 else
727 sht = &bfad_im_vport_template;
728
729 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
730 sht->max_sectors = max_xfer_size << 1;
731
732 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
733
734 return scsi_host_alloc(sht, sizeof(unsigned long));
735}
736
737void
738bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
739{
740 if (!(im_port->flags & BFAD_PORT_DELETE))
741 flush_workqueue(bfad->im->drv_workq);
742 bfad_im_scsi_host_free(im_port->bfad, im_port);
743 bfad_im_port_clean(im_port);
744 kfree(im_port);
745}
746
747void
748bfad_destroy_workq(struct bfad_im_s *im)
749{
750 if (im && im->drv_workq) {
751 flush_workqueue(im->drv_workq);
752 destroy_workqueue(im->drv_workq);
753 im->drv_workq = NULL;
754 }
755}
756
757bfa_status_t
758bfad_thread_workq(struct bfad_s *bfad)
759{
760 struct bfad_im_s *im = bfad->im;
761
762 bfa_trc(bfad, 0);
763 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
764 bfad->inst_no);
765 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
766 if (!im->drv_workq)
767 return BFA_STATUS_FAILED;
768
769 return BFA_STATUS_OK;
770}
771
772/*
773 * Scsi_Host template entry.
774 *
775 * Description:
776 * OS entry point to adjust the queue_depths on a per-device basis.
777 * Called once per device during the bus scan.
778 * Return non-zero if fails.
779 */
780static int
781bfad_im_slave_configure(struct scsi_device *sdev)
782{
783 if (sdev->tagged_supported)
784 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
785 else
786 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
787
788 return 0;
789}
790
791struct scsi_host_template bfad_im_scsi_host_template = {
792 .module = THIS_MODULE,
793 .name = BFAD_DRIVER_NAME,
794 .info = bfad_im_info,
795 .queuecommand = bfad_im_queuecommand,
796 .eh_abort_handler = bfad_im_abort_handler,
797 .eh_device_reset_handler = bfad_im_reset_lun_handler,
798 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
799
800 .slave_alloc = bfad_im_slave_alloc,
801 .slave_configure = bfad_im_slave_configure,
802 .slave_destroy = bfad_im_slave_destroy,
803
804 .this_id = -1,
805 .sg_tablesize = BFAD_IO_MAX_SGE,
806 .cmd_per_lun = 3,
807 .use_clustering = ENABLE_CLUSTERING,
808 .shost_attrs = bfad_im_host_attrs,
809 .max_sectors = BFAD_MAX_SECTORS,
810 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
811};
812
813struct scsi_host_template bfad_im_vport_template = {
814 .module = THIS_MODULE,
815 .name = BFAD_DRIVER_NAME,
816 .info = bfad_im_info,
817 .queuecommand = bfad_im_queuecommand,
818 .eh_abort_handler = bfad_im_abort_handler,
819 .eh_device_reset_handler = bfad_im_reset_lun_handler,
820 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
821
822 .slave_alloc = bfad_im_slave_alloc,
823 .slave_configure = bfad_im_slave_configure,
824 .slave_destroy = bfad_im_slave_destroy,
825
826 .this_id = -1,
827 .sg_tablesize = BFAD_IO_MAX_SGE,
828 .cmd_per_lun = 3,
829 .use_clustering = ENABLE_CLUSTERING,
830 .shost_attrs = bfad_im_vport_attrs,
831 .max_sectors = BFAD_MAX_SECTORS,
832};
833
834bfa_status_t
835bfad_im_module_init(void)
836{
837 bfad_im_scsi_transport_template =
838 fc_attach_transport(&bfad_im_fc_function_template);
839 if (!bfad_im_scsi_transport_template)
840 return BFA_STATUS_ENOMEM;
841
842 bfad_im_scsi_vport_transport_template =
843 fc_attach_transport(&bfad_im_vport_fc_function_template);
844 if (!bfad_im_scsi_vport_transport_template) {
845 fc_release_transport(bfad_im_scsi_transport_template);
846 return BFA_STATUS_ENOMEM;
847 }
848
849 return BFA_STATUS_OK;
850}
851
852void
853bfad_im_module_exit(void)
854{
855 if (bfad_im_scsi_transport_template)
856 fc_release_transport(bfad_im_scsi_transport_template);
857
858 if (bfad_im_scsi_vport_transport_template)
859 fc_release_transport(bfad_im_scsi_vport_transport_template);
860}
861
862void
863bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
864{
865 struct scsi_device *tmp_sdev;
866
867 if (((jiffies - itnim->last_ramp_up_time) >
868 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
869 ((jiffies - itnim->last_queue_full_time) >
870 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
871 shost_for_each_device(tmp_sdev, sdev->host) {
872 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
873 if (tmp_sdev->id != sdev->id)
874 continue;
875 if (tmp_sdev->ordered_tags)
876 scsi_adjust_queue_depth(tmp_sdev,
877 MSG_ORDERED_TAG,
878 tmp_sdev->queue_depth + 1);
879 else
880 scsi_adjust_queue_depth(tmp_sdev,
881 MSG_SIMPLE_TAG,
882 tmp_sdev->queue_depth + 1);
883
884 itnim->last_ramp_up_time = jiffies;
885 }
886 }
887 }
888}
889
890void
891bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
892{
893 struct scsi_device *tmp_sdev;
894
895 itnim->last_queue_full_time = jiffies;
896
897 shost_for_each_device(tmp_sdev, sdev->host) {
898 if (tmp_sdev->id != sdev->id)
899 continue;
900 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
901 }
902}
903
904struct bfad_itnim_s *
905bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
906{
907 struct bfad_itnim_s *itnim = NULL;
908
909 /* Search the mapped list for this target ID */
910 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
911 if (id == itnim->scsi_tgt_id)
912 return itnim;
913 }
914
915 return NULL;
916}
917
918/*
919 * Scsi_Host template entry slave_alloc
920 */
921static int
922bfad_im_slave_alloc(struct scsi_device *sdev)
923{
924 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
925
926 if (!rport || fc_remote_port_chkready(rport))
927 return -ENXIO;
928
929 sdev->hostdata = rport->dd_data;
930
931 return 0;
932}
933
934static u32
935bfad_im_supported_speeds(struct bfa_s *bfa)
936{
937 struct bfa_ioc_attr_s *ioc_attr;
938 u32 supported_speed = 0;
939
940 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
941 if (!ioc_attr)
942 return 0;
943
944 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
945 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
946 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
947 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
948 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
949 if (ioc_attr->adapter_attr.is_mezz) {
950 supported_speed |= FC_PORTSPEED_8GBIT |
951 FC_PORTSPEED_4GBIT |
952 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
953 } else {
954 supported_speed |= FC_PORTSPEED_8GBIT |
955 FC_PORTSPEED_4GBIT |
956 FC_PORTSPEED_2GBIT;
957 }
958 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
959 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
960 FC_PORTSPEED_1GBIT;
961 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
962 supported_speed |= FC_PORTSPEED_10GBIT;
963 }
964 kfree(ioc_attr);
965 return supported_speed;
966}
967
968void
969bfad_fc_host_init(struct bfad_im_port_s *im_port)
970{
971 struct Scsi_Host *host = im_port->shost;
972 struct bfad_s *bfad = im_port->bfad;
973 struct bfad_port_s *port = im_port->port;
974 char symname[BFA_SYMNAME_MAXLEN];
975 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
976
977 fc_host_node_name(host) =
978 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
979 fc_host_port_name(host) =
980 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
981 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
982
983 fc_host_supported_classes(host) = FC_COS_CLASS3;
984
985 memset(fc_host_supported_fc4s(host), 0,
986 sizeof(fc_host_supported_fc4s(host)));
987 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
988 /* For FCP type 0x08 */
989 fc_host_supported_fc4s(host)[2] = 1;
990 /* For fibre channel services type 0x20 */
991 fc_host_supported_fc4s(host)[7] = 1;
992
993 strncpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
994 BFA_SYMNAME_MAXLEN);
995 sprintf(fc_host_symbolic_name(host), "%s", symname);
996
997 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
998 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
999}
1000
1001static void
1002bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1003{
1004 struct fc_rport_identifiers rport_ids;
1005 struct fc_rport *fc_rport;
1006 struct bfad_itnim_data_s *itnim_data;
1007
1008 rport_ids.node_name =
1009 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1010 rport_ids.port_name =
1011 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1012 rport_ids.port_id =
1013 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1014 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1015
1016 itnim->fc_rport = fc_rport =
1017 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1018
1019 if (!fc_rport)
1020 return;
1021
1022 fc_rport->maxframe_size =
1023 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1024 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1025
1026 itnim_data = fc_rport->dd_data;
1027 itnim_data->itnim = itnim;
1028
1029 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1030
1031 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1032 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1033
1034 if ((fc_rport->scsi_target_id != -1)
1035 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1036 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1037
1038 return;
1039}
1040
1041/*
1042 * Work queue handler using FC transport service
1043* Context: kernel
1044 */
1045static void
1046bfad_im_itnim_work_handler(struct work_struct *work)
1047{
1048 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1049 itnim_work);
1050 struct bfad_im_s *im = itnim->im;
1051 struct bfad_s *bfad = im->bfad;
1052 struct bfad_im_port_s *im_port;
1053 unsigned long flags;
1054 struct fc_rport *fc_rport;
1055 wwn_t wwpn;
1056 u32 fcid;
1057 char wwpn_str[32], fcid_str[16];
1058
1059 spin_lock_irqsave(&bfad->bfad_lock, flags);
1060 im_port = itnim->im_port;
1061 bfa_trc(bfad, itnim->state);
1062 switch (itnim->state) {
1063 case ITNIM_STATE_ONLINE:
1064 if (!itnim->fc_rport) {
1065 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1066 bfad_im_fc_rport_add(im_port, itnim);
1067 spin_lock_irqsave(&bfad->bfad_lock, flags);
1068 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1069 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1070 wwn2str(wwpn_str, wwpn);
1071 fcid2str(fcid_str, fcid);
1072 list_add_tail(&itnim->list_entry,
1073 &im_port->itnim_mapped_list);
1074 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1075 "ITNIM ONLINE Target: %d:0:%d "
1076 "FCID: %s WWPN: %s\n",
1077 im_port->shost->host_no,
1078 itnim->scsi_tgt_id,
1079 fcid_str, wwpn_str);
1080 } else {
1081 printk(KERN_WARNING
1082 "%s: itnim %llx is already in online state\n",
1083 __func__,
1084 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1085 }
1086
1087 break;
1088 case ITNIM_STATE_OFFLINE_PENDING:
1089 itnim->state = ITNIM_STATE_OFFLINE;
1090 if (itnim->fc_rport) {
1091 fc_rport = itnim->fc_rport;
1092 ((struct bfad_itnim_data_s *)
1093 fc_rport->dd_data)->itnim = NULL;
1094 itnim->fc_rport = NULL;
1095 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1096 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1097 fc_rport->dev_loss_tmo =
1098 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1099 fc_remote_port_delete(fc_rport);
1100 spin_lock_irqsave(&bfad->bfad_lock, flags);
1101 }
1102 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1103 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1104 wwn2str(wwpn_str, wwpn);
1105 fcid2str(fcid_str, fcid);
1106 list_del(&itnim->list_entry);
1107 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1108 "ITNIM OFFLINE Target: %d:0:%d "
1109 "FCID: %s WWPN: %s\n",
1110 im_port->shost->host_no,
1111 itnim->scsi_tgt_id,
1112 fcid_str, wwpn_str);
1113 }
1114 break;
1115 case ITNIM_STATE_FREE:
1116 if (itnim->fc_rport) {
1117 fc_rport = itnim->fc_rport;
1118 ((struct bfad_itnim_data_s *)
1119 fc_rport->dd_data)->itnim = NULL;
1120 itnim->fc_rport = NULL;
1121 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1122 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1123 fc_rport->dev_loss_tmo =
1124 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1125 fc_remote_port_delete(fc_rport);
1126 spin_lock_irqsave(&bfad->bfad_lock, flags);
1127 }
1128 list_del(&itnim->list_entry);
1129 }
1130
1131 kfree(itnim);
1132 break;
1133 default:
1134 WARN_ON(1);
1135 break;
1136 }
1137
1138 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1139}
1140
1141/*
1142 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1143 */
1144static int
1145bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1146{
1147 struct bfad_im_port_s *im_port =
1148 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1149 struct bfad_s *bfad = im_port->bfad;
1150 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1151 struct bfad_itnim_s *itnim;
1152 struct bfa_ioim_s *hal_io;
1153 unsigned long flags;
1154 int rc;
1155 int sg_cnt = 0;
1156 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1157
1158 rc = fc_remote_port_chkready(rport);
1159 if (rc) {
1160 cmnd->result = rc;
1161 done(cmnd);
1162 return 0;
1163 }
1164
1165 sg_cnt = scsi_dma_map(cmnd);
1166 if (sg_cnt < 0)
1167 return SCSI_MLQUEUE_HOST_BUSY;
1168
1169 cmnd->scsi_done = done;
1170
1171 spin_lock_irqsave(&bfad->bfad_lock, flags);
1172 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1173 printk(KERN_WARNING
1174 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1175 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1176 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1177 goto out_fail_cmd;
1178 }
1179
1180
1181 itnim = itnim_data->itnim;
1182 if (!itnim) {
1183 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1184 goto out_fail_cmd;
1185 }
1186
1187 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1188 itnim->bfa_itnim, sg_cnt);
1189 if (!hal_io) {
1190 printk(KERN_WARNING "hal_io failure\n");
1191 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1192 scsi_dma_unmap(cmnd);
1193 return SCSI_MLQUEUE_HOST_BUSY;
1194 }
1195
1196 cmnd->host_scribble = (char *)hal_io;
1197 bfa_ioim_start(hal_io);
1198 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1199
1200 return 0;
1201
1202out_fail_cmd:
1203 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1204 scsi_dma_unmap(cmnd);
1205 if (done)
1206 done(cmnd);
1207
1208 return 0;
1209}
1210
1211static DEF_SCSI_QCMD(bfad_im_queuecommand)
1212
1213void
1214bfad_rport_online_wait(struct bfad_s *bfad)
1215{
1216 int i;
1217 int rport_delay = 10;
1218
1219 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1220 && i < bfa_linkup_delay; i++) {
1221 set_current_state(TASK_UNINTERRUPTIBLE);
1222 schedule_timeout(HZ);
1223 }
1224
1225 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1226 rport_delay = rport_delay < bfa_linkup_delay ?
1227 rport_delay : bfa_linkup_delay;
1228 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1229 && i < rport_delay; i++) {
1230 set_current_state(TASK_UNINTERRUPTIBLE);
1231 schedule_timeout(HZ);
1232 }
1233
1234 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1235 set_current_state(TASK_UNINTERRUPTIBLE);
1236 schedule_timeout(rport_delay * HZ);
1237 }
1238 }
1239}
1240
1241int
1242bfad_get_linkup_delay(struct bfad_s *bfad)
1243{
1244 u8 nwwns = 0;
1245 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1246 int linkup_delay;
1247
1248 /*
1249 * Querying for the boot target port wwns
1250 * -- read from boot information in flash.
1251 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1252 * else => local boot machine set linkup_delay = 0
1253 */
1254
1255 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1256
1257 if (nwwns > 0)
1258 /* If Boot over SAN set linkup_delay = 30sec */
1259 linkup_delay = 30;
1260 else
1261 /* If local boot; no linkup_delay */
1262 linkup_delay = 0;
1263
1264 return linkup_delay;
1265}