1 /*
2 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
3 * Copyright (c) 2014- QLogic Corporation.
4 * All rights reserved
5 * www.qlogic.com
6 *
7 * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License (GPL) Version 2 as
11 * published by the Free Software Foundation
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 */
18
19 /*
20 * bfad_im.c Linux driver IM module.
21 */
22
23 #include <linux/export.h>
24
25 #include "bfad_drv.h"
26 #include "bfad_im.h"
27 #include "bfa_fcs.h"
28
29 BFA_TRC_FILE(LDRV, IM);
30
31 DEFINE_IDR(bfad_im_port_index);
32 struct scsi_transport_template *bfad_im_scsi_transport_template;
33 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
34 static void bfad_im_itnim_work_handler(struct work_struct *work);
35 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
36 static int bfad_im_slave_alloc(struct scsi_device *sdev);
37 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port,
38 struct bfad_itnim_s *itnim);
39
40 void
bfa_cb_ioim_done(void * drv,struct bfad_ioim_s * dio,enum bfi_ioim_status io_status,u8 scsi_status,int sns_len,u8 * sns_info,s32 residue)41 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
42 enum bfi_ioim_status io_status, u8 scsi_status,
43 int sns_len, u8 *sns_info, s32 residue)
44 {
45 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
46 struct bfad_s *bfad = drv;
47 struct bfad_itnim_data_s *itnim_data;
48 struct bfad_itnim_s *itnim;
49 u8 host_status = DID_OK;
50
51 switch (io_status) {
52 case BFI_IOIM_STS_OK:
53 bfa_trc(bfad, scsi_status);
54 scsi_set_resid(cmnd, 0);
55
56 if (sns_len > 0) {
57 bfa_trc(bfad, sns_len);
58 if (sns_len > SCSI_SENSE_BUFFERSIZE)
59 sns_len = SCSI_SENSE_BUFFERSIZE;
60 memcpy(cmnd->sense_buffer, sns_info, sns_len);
61 }
62
63 if (residue > 0) {
64 bfa_trc(bfad, residue);
65 scsi_set_resid(cmnd, residue);
66 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
67 (scsi_bufflen(cmnd) - residue) <
68 cmnd->underflow) {
69 bfa_trc(bfad, 0);
70 host_status = DID_ERROR;
71 }
72 }
73 cmnd->result = host_status << 16 | scsi_status;
74
75 break;
76
77 case BFI_IOIM_STS_TIMEDOUT:
78 cmnd->result = DID_TIME_OUT << 16;
79 break;
80 case BFI_IOIM_STS_PATHTOV:
81 cmnd->result = DID_TRANSPORT_DISRUPTED << 16;
82 break;
83 default:
84 cmnd->result = DID_ERROR << 16;
85 }
86
87 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
88 if (cmnd->device->host != NULL)
89 scsi_dma_unmap(cmnd);
90
91 cmnd->host_scribble = NULL;
92 bfa_trc(bfad, cmnd->result);
93
94 itnim_data = cmnd->device->hostdata;
95 if (itnim_data) {
96 itnim = itnim_data->itnim;
97 if (!cmnd->result && itnim &&
98 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
99 /* Queue depth adjustment for good status completion */
100 bfad_ramp_up_qdepth(itnim, cmnd->device);
101 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
102 /* qfull handling */
103 bfad_handle_qfull(itnim, cmnd->device);
104 }
105 }
106
107 cmnd->scsi_done(cmnd);
108 }
109
110 void
bfa_cb_ioim_good_comp(void * drv,struct bfad_ioim_s * dio)111 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
112 {
113 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
114 struct bfad_itnim_data_s *itnim_data;
115 struct bfad_itnim_s *itnim;
116
117 cmnd->result = DID_OK << 16 | SCSI_STATUS_GOOD;
118
119 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
120 if (cmnd->device->host != NULL)
121 scsi_dma_unmap(cmnd);
122
123 cmnd->host_scribble = NULL;
124
125 /* Queue depth adjustment */
126 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
127 itnim_data = cmnd->device->hostdata;
128 if (itnim_data) {
129 itnim = itnim_data->itnim;
130 if (itnim)
131 bfad_ramp_up_qdepth(itnim, cmnd->device);
132 }
133 }
134
135 cmnd->scsi_done(cmnd);
136 }
137
138 void
bfa_cb_ioim_abort(void * drv,struct bfad_ioim_s * dio)139 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
140 {
141 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
142 struct bfad_s *bfad = drv;
143
144 cmnd->result = DID_ERROR << 16;
145
146 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
147 if (cmnd->device->host != NULL)
148 scsi_dma_unmap(cmnd);
149
150 bfa_trc(bfad, cmnd->result);
151 cmnd->host_scribble = NULL;
152 }
153
154 void
bfa_cb_tskim_done(void * bfad,struct bfad_tskim_s * dtsk,enum bfi_tskim_status tsk_status)155 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
156 enum bfi_tskim_status tsk_status)
157 {
158 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
159 wait_queue_head_t *wq;
160
161 cmnd->SCp.Status |= tsk_status << 1;
162 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
163 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
164 cmnd->SCp.ptr = NULL;
165
166 if (wq)
167 wake_up(wq);
168 }
169
170 /*
171 * Scsi_Host_template SCSI host template
172 */
173 /*
174 * Scsi_Host template entry, returns BFAD PCI info.
175 */
176 static const char *
bfad_im_info(struct Scsi_Host * shost)177 bfad_im_info(struct Scsi_Host *shost)
178 {
179 static char bfa_buf[256];
180 struct bfad_im_port_s *im_port =
181 (struct bfad_im_port_s *) shost->hostdata[0];
182 struct bfad_s *bfad = im_port->bfad;
183
184 memset(bfa_buf, 0, sizeof(bfa_buf));
185 snprintf(bfa_buf, sizeof(bfa_buf),
186 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",
187 bfad->pci_name, BFAD_DRIVER_VERSION);
188
189 return bfa_buf;
190 }
191
192 /*
193 * Scsi_Host template entry, aborts the specified SCSI command.
194 *
195 * Returns: SUCCESS or FAILED.
196 */
197 static int
bfad_im_abort_handler(struct scsi_cmnd * cmnd)198 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
199 {
200 struct Scsi_Host *shost = cmnd->device->host;
201 struct bfad_im_port_s *im_port =
202 (struct bfad_im_port_s *) shost->hostdata[0];
203 struct bfad_s *bfad = im_port->bfad;
204 struct bfa_ioim_s *hal_io;
205 unsigned long flags;
206 u32 timeout;
207 int rc = FAILED;
208
209 spin_lock_irqsave(&bfad->bfad_lock, flags);
210 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
211 if (!hal_io) {
212 /* IO has been completed, return success */
213 rc = SUCCESS;
214 goto out;
215 }
216 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
217 rc = FAILED;
218 goto out;
219 }
220
221 bfa_trc(bfad, hal_io->iotag);
222 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
223 "scsi%d: abort cmnd %p iotag %x\n",
224 im_port->shost->host_no, cmnd, hal_io->iotag);
225 (void) bfa_ioim_abort(hal_io);
226 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
227
228 /* Need to wait until the command get aborted */
229 timeout = 10;
230 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
231 set_current_state(TASK_UNINTERRUPTIBLE);
232 schedule_timeout(timeout);
233 if (timeout < 4 * HZ)
234 timeout *= 2;
235 }
236
237 cmnd->scsi_done(cmnd);
238 bfa_trc(bfad, hal_io->iotag);
239 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
240 "scsi%d: complete abort 0x%p iotag 0x%x\n",
241 im_port->shost->host_no, cmnd, hal_io->iotag);
242 return SUCCESS;
243 out:
244 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
245 return rc;
246 }
247
248 static bfa_status_t
bfad_im_target_reset_send(struct bfad_s * bfad,struct scsi_cmnd * cmnd,struct bfad_itnim_s * itnim)249 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
250 struct bfad_itnim_s *itnim)
251 {
252 struct bfa_tskim_s *tskim;
253 struct bfa_itnim_s *bfa_itnim;
254 bfa_status_t rc = BFA_STATUS_OK;
255 struct scsi_lun scsilun;
256
257 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
258 if (!tskim) {
259 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
260 "target reset, fail to allocate tskim\n");
261 rc = BFA_STATUS_FAILED;
262 goto out;
263 }
264
265 /*
266 * Set host_scribble to NULL to avoid aborting a task command if
267 * happens.
268 */
269 cmnd->host_scribble = NULL;
270 cmnd->SCp.Status = 0;
271 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
272 /*
273 * bfa_itnim can be NULL if the port gets disconnected and the bfa
274 * and fcs layers have cleaned up their nexus with the targets and
275 * the same has not been cleaned up by the shim
276 */
277 if (bfa_itnim == NULL) {
278 bfa_tskim_free(tskim);
279 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
280 "target reset, bfa_itnim is NULL\n");
281 rc = BFA_STATUS_FAILED;
282 goto out;
283 }
284
285 memset(&scsilun, 0, sizeof(scsilun));
286 bfa_tskim_start(tskim, bfa_itnim, scsilun,
287 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
288 out:
289 return rc;
290 }
291
292 /*
293 * Scsi_Host template entry, resets a LUN and abort its all commands.
294 *
295 * Returns: SUCCESS or FAILED.
296 *
297 */
298 static int
bfad_im_reset_lun_handler(struct scsi_cmnd * cmnd)299 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
300 {
301 struct Scsi_Host *shost = cmnd->device->host;
302 struct bfad_im_port_s *im_port =
303 (struct bfad_im_port_s *) shost->hostdata[0];
304 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
305 struct bfad_s *bfad = im_port->bfad;
306 struct bfa_tskim_s *tskim;
307 struct bfad_itnim_s *itnim;
308 struct bfa_itnim_s *bfa_itnim;
309 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
310 int rc = SUCCESS;
311 unsigned long flags;
312 enum bfi_tskim_status task_status;
313 struct scsi_lun scsilun;
314
315 spin_lock_irqsave(&bfad->bfad_lock, flags);
316 itnim = itnim_data->itnim;
317 if (!itnim) {
318 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
319 rc = FAILED;
320 goto out;
321 }
322
323 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
324 if (!tskim) {
325 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
326 "LUN reset, fail to allocate tskim");
327 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
328 rc = FAILED;
329 goto out;
330 }
331
332 /*
333 * Set host_scribble to NULL to avoid aborting a task command
334 * if happens.
335 */
336 cmnd->host_scribble = NULL;
337 cmnd->SCp.ptr = (char *)&wq;
338 cmnd->SCp.Status = 0;
339 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
340 /*
341 * bfa_itnim can be NULL if the port gets disconnected and the bfa
342 * and fcs layers have cleaned up their nexus with the targets and
343 * the same has not been cleaned up by the shim
344 */
345 if (bfa_itnim == NULL) {
346 bfa_tskim_free(tskim);
347 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
348 "lun reset, bfa_itnim is NULL\n");
349 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
350 rc = FAILED;
351 goto out;
352 }
353 int_to_scsilun(cmnd->device->lun, &scsilun);
354 bfa_tskim_start(tskim, bfa_itnim, scsilun,
355 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
356 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
357
358 wait_event(wq, test_bit(IO_DONE_BIT,
359 (unsigned long *)&cmnd->SCp.Status));
360
361 task_status = cmnd->SCp.Status >> 1;
362 if (task_status != BFI_TSKIM_STS_OK) {
363 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
364 "LUN reset failure, status: %d\n", task_status);
365 rc = FAILED;
366 }
367
368 out:
369 return rc;
370 }
371
372 /*
373 * Scsi_Host template entry, resets the target and abort all commands.
374 */
375 static int
bfad_im_reset_target_handler(struct scsi_cmnd * cmnd)376 bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
377 {
378 struct Scsi_Host *shost = cmnd->device->host;
379 struct scsi_target *starget = scsi_target(cmnd->device);
380 struct bfad_im_port_s *im_port =
381 (struct bfad_im_port_s *) shost->hostdata[0];
382 struct bfad_s *bfad = im_port->bfad;
383 struct bfad_itnim_s *itnim;
384 unsigned long flags;
385 u32 rc, rtn = FAILED;
386 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
387 enum bfi_tskim_status task_status;
388
389 spin_lock_irqsave(&bfad->bfad_lock, flags);
390 itnim = bfad_get_itnim(im_port, starget->id);
391 if (itnim) {
392 cmnd->SCp.ptr = (char *)&wq;
393 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
394 if (rc == BFA_STATUS_OK) {
395 /* wait target reset to complete */
396 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
397 wait_event(wq, test_bit(IO_DONE_BIT,
398 (unsigned long *)&cmnd->SCp.Status));
399 spin_lock_irqsave(&bfad->bfad_lock, flags);
400
401 task_status = cmnd->SCp.Status >> 1;
402 if (task_status != BFI_TSKIM_STS_OK)
403 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
404 "target reset failure,"
405 " status: %d\n", task_status);
406 else
407 rtn = SUCCESS;
408 }
409 }
410 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
411
412 return rtn;
413 }
414
415 /*
416 * Scsi_Host template entry slave_destroy.
417 */
418 static void
bfad_im_slave_destroy(struct scsi_device * sdev)419 bfad_im_slave_destroy(struct scsi_device *sdev)
420 {
421 sdev->hostdata = NULL;
422 return;
423 }
424
425 /*
426 * BFA FCS itnim callbacks
427 */
428
429 /*
430 * BFA FCS itnim alloc callback, after successful PRLI
431 * Context: Interrupt
432 */
433 int
bfa_fcb_itnim_alloc(struct bfad_s * bfad,struct bfa_fcs_itnim_s ** itnim,struct bfad_itnim_s ** itnim_drv)434 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
435 struct bfad_itnim_s **itnim_drv)
436 {
437 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
438 if (*itnim_drv == NULL)
439 return -ENOMEM;
440
441 (*itnim_drv)->im = bfad->im;
442 *itnim = &(*itnim_drv)->fcs_itnim;
443 (*itnim_drv)->state = ITNIM_STATE_NONE;
444
445 /*
446 * Initiaze the itnim_work
447 */
448 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
449 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
450 return 0;
451 }
452
453 /*
454 * BFA FCS itnim free callback.
455 * Context: Interrupt. bfad_lock is held
456 */
457 void
bfa_fcb_itnim_free(struct bfad_s * bfad,struct bfad_itnim_s * itnim_drv)458 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
459 {
460 struct bfad_port_s *port;
461 wwn_t wwpn;
462 u32 fcid;
463 char wwpn_str[32], fcid_str[16];
464 struct bfad_im_s *im = itnim_drv->im;
465
466 /* online to free state transtion should not happen */
467 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
468
469 itnim_drv->queue_work = 1;
470 /* offline request is not yet done, use the same request to free */
471 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
472 itnim_drv->queue_work = 0;
473
474 itnim_drv->state = ITNIM_STATE_FREE;
475 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
476 itnim_drv->im_port = port->im_port;
477 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
478 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
479 wwn2str(wwpn_str, wwpn);
480 fcid2str(fcid_str, fcid);
481 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
482 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
483 port->im_port->shost->host_no,
484 fcid_str, wwpn_str);
485
486 /* ITNIM processing */
487 if (itnim_drv->queue_work)
488 queue_work(im->drv_workq, &itnim_drv->itnim_work);
489 }
490
491 /*
492 * BFA FCS itnim online callback.
493 * Context: Interrupt. bfad_lock is held
494 */
495 void
bfa_fcb_itnim_online(struct bfad_itnim_s * itnim_drv)496 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
497 {
498 struct bfad_port_s *port;
499 struct bfad_im_s *im = itnim_drv->im;
500
501 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
502 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
503 itnim_drv->state = ITNIM_STATE_ONLINE;
504 itnim_drv->queue_work = 1;
505 itnim_drv->im_port = port->im_port;
506
507 /* ITNIM processing */
508 if (itnim_drv->queue_work)
509 queue_work(im->drv_workq, &itnim_drv->itnim_work);
510 }
511
512 /*
513 * BFA FCS itnim offline callback.
514 * Context: Interrupt. bfad_lock is held
515 */
516 void
bfa_fcb_itnim_offline(struct bfad_itnim_s * itnim_drv)517 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
518 {
519 struct bfad_port_s *port;
520 struct bfad_s *bfad;
521 struct bfad_im_s *im = itnim_drv->im;
522
523 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
524 bfad = port->bfad;
525 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
526 (port->flags & BFAD_PORT_DELETE)) {
527 itnim_drv->state = ITNIM_STATE_OFFLINE;
528 return;
529 }
530 itnim_drv->im_port = port->im_port;
531 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
532 itnim_drv->queue_work = 1;
533
534 /* ITNIM processing */
535 if (itnim_drv->queue_work)
536 queue_work(im->drv_workq, &itnim_drv->itnim_work);
537 }
538
539 /*
540 * Allocate a Scsi_Host for a port.
541 */
542 int
bfad_im_scsi_host_alloc(struct bfad_s * bfad,struct bfad_im_port_s * im_port,struct device * dev)543 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
544 struct device *dev)
545 {
546 struct bfad_im_port_pointer *im_portp;
547 int error = 1;
548
549 mutex_lock(&bfad_mutex);
550 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
551 if (error < 0) {
552 mutex_unlock(&bfad_mutex);
553 printk(KERN_WARNING "idr_alloc failure\n");
554 goto out;
555 }
556 im_port->idr_id = error;
557 mutex_unlock(&bfad_mutex);
558
559 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
560 if (!im_port->shost) {
561 error = 1;
562 goto out_free_idr;
563 }
564
565 im_portp = shost_priv(im_port->shost);
566 im_portp->p = im_port;
567 im_port->shost->unique_id = im_port->idr_id;
568 im_port->shost->this_id = -1;
569 im_port->shost->max_id = MAX_FCP_TARGET;
570 im_port->shost->max_lun = MAX_FCP_LUN;
571 im_port->shost->max_cmd_len = 16;
572 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
573 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
574 im_port->shost->transportt = bfad_im_scsi_transport_template;
575 else
576 im_port->shost->transportt =
577 bfad_im_scsi_vport_transport_template;
578
579 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
580 if (error) {
581 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
582 goto out_fc_rel;
583 }
584
585 return 0;
586
587 out_fc_rel:
588 scsi_host_put(im_port->shost);
589 im_port->shost = NULL;
590 out_free_idr:
591 mutex_lock(&bfad_mutex);
592 idr_remove(&bfad_im_port_index, im_port->idr_id);
593 mutex_unlock(&bfad_mutex);
594 out:
595 return error;
596 }
597
598 void
bfad_im_scsi_host_free(struct bfad_s * bfad,struct bfad_im_port_s * im_port)599 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
600 {
601 bfa_trc(bfad, bfad->inst_no);
602 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
603 im_port->shost->host_no);
604
605 fc_remove_host(im_port->shost);
606
607 scsi_remove_host(im_port->shost);
608 scsi_host_put(im_port->shost);
609
610 mutex_lock(&bfad_mutex);
611 idr_remove(&bfad_im_port_index, im_port->idr_id);
612 mutex_unlock(&bfad_mutex);
613 }
614
615 static void
bfad_im_port_delete_handler(struct work_struct * work)616 bfad_im_port_delete_handler(struct work_struct *work)
617 {
618 struct bfad_im_port_s *im_port =
619 container_of(work, struct bfad_im_port_s, port_delete_work);
620
621 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
622 im_port->flags |= BFAD_PORT_DELETE;
623 fc_vport_terminate(im_port->fc_vport);
624 }
625 }
626
627 bfa_status_t
bfad_im_port_new(struct bfad_s * bfad,struct bfad_port_s * port)628 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
629 {
630 int rc = BFA_STATUS_OK;
631 struct bfad_im_port_s *im_port;
632
633 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
634 if (im_port == NULL) {
635 rc = BFA_STATUS_ENOMEM;
636 goto ext;
637 }
638 port->im_port = im_port;
639 im_port->port = port;
640 im_port->bfad = bfad;
641
642 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
643 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
644 INIT_LIST_HEAD(&im_port->binding_list);
645
646 ext:
647 return rc;
648 }
649
650 void
bfad_im_port_delete(struct bfad_s * bfad,struct bfad_port_s * port)651 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
652 {
653 struct bfad_im_port_s *im_port = port->im_port;
654
655 queue_work(bfad->im->drv_workq,
656 &im_port->port_delete_work);
657 }
658
659 void
bfad_im_port_clean(struct bfad_im_port_s * im_port)660 bfad_im_port_clean(struct bfad_im_port_s *im_port)
661 {
662 struct bfad_fcp_binding *bp, *bp_new;
663 unsigned long flags;
664 struct bfad_s *bfad = im_port->bfad;
665
666 spin_lock_irqsave(&bfad->bfad_lock, flags);
667 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
668 list_entry) {
669 list_del(&bp->list_entry);
670 kfree(bp);
671 }
672
673 /* the itnim_mapped_list must be empty at this time */
674 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
675
676 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
677 }
678
bfad_aen_im_notify_handler(struct work_struct * work)679 static void bfad_aen_im_notify_handler(struct work_struct *work)
680 {
681 struct bfad_im_s *im =
682 container_of(work, struct bfad_im_s, aen_im_notify_work);
683 struct bfa_aen_entry_s *aen_entry;
684 struct bfad_s *bfad = im->bfad;
685 struct Scsi_Host *shost = bfad->pport.im_port->shost;
686 void *event_data;
687 unsigned long flags;
688
689 while (!list_empty(&bfad->active_aen_q)) {
690 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
691 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
692 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
693 event_data = (char *)aen_entry + sizeof(struct list_head);
694 fc_host_post_vendor_event(shost, fc_get_event_number(),
695 sizeof(struct bfa_aen_entry_s) -
696 sizeof(struct list_head),
697 (char *)event_data, BFAD_NL_VENDOR_ID);
698 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
699 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
700 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
701 }
702 }
703
704 bfa_status_t
bfad_im_probe(struct bfad_s * bfad)705 bfad_im_probe(struct bfad_s *bfad)
706 {
707 struct bfad_im_s *im;
708
709 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
710 if (im == NULL)
711 return BFA_STATUS_ENOMEM;
712
713 bfad->im = im;
714 im->bfad = bfad;
715
716 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
717 kfree(im);
718 return BFA_STATUS_FAILED;
719 }
720
721 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
722 return BFA_STATUS_OK;
723 }
724
725 void
bfad_im_probe_undo(struct bfad_s * bfad)726 bfad_im_probe_undo(struct bfad_s *bfad)
727 {
728 if (bfad->im) {
729 bfad_destroy_workq(bfad->im);
730 kfree(bfad->im);
731 bfad->im = NULL;
732 }
733 }
734
735 struct Scsi_Host *
bfad_scsi_host_alloc(struct bfad_im_port_s * im_port,struct bfad_s * bfad)736 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
737 {
738 struct scsi_host_template *sht;
739
740 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
741 sht = &bfad_im_scsi_host_template;
742 else
743 sht = &bfad_im_vport_template;
744
745 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
746 sht->max_sectors = max_xfer_size << 1;
747
748 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
749
750 return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));
751 }
752
753 void
bfad_scsi_host_free(struct bfad_s * bfad,struct bfad_im_port_s * im_port)754 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
755 {
756 if (!(im_port->flags & BFAD_PORT_DELETE))
757 flush_workqueue(bfad->im->drv_workq);
758 bfad_im_scsi_host_free(im_port->bfad, im_port);
759 bfad_im_port_clean(im_port);
760 kfree(im_port);
761 }
762
763 void
bfad_destroy_workq(struct bfad_im_s * im)764 bfad_destroy_workq(struct bfad_im_s *im)
765 {
766 if (im && im->drv_workq) {
767 flush_workqueue(im->drv_workq);
768 destroy_workqueue(im->drv_workq);
769 im->drv_workq = NULL;
770 }
771 }
772
773 bfa_status_t
bfad_thread_workq(struct bfad_s * bfad)774 bfad_thread_workq(struct bfad_s *bfad)
775 {
776 struct bfad_im_s *im = bfad->im;
777
778 bfa_trc(bfad, 0);
779 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
780 bfad->inst_no);
781 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
782 if (!im->drv_workq)
783 return BFA_STATUS_FAILED;
784
785 return BFA_STATUS_OK;
786 }
787
788 /*
789 * Scsi_Host template entry.
790 *
791 * Description:
792 * OS entry point to adjust the queue_depths on a per-device basis.
793 * Called once per device during the bus scan.
794 * Return non-zero if fails.
795 */
796 static int
bfad_im_slave_configure(struct scsi_device * sdev)797 bfad_im_slave_configure(struct scsi_device *sdev)
798 {
799 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
800 return 0;
801 }
802
803 struct scsi_host_template bfad_im_scsi_host_template = {
804 .module = THIS_MODULE,
805 .name = BFAD_DRIVER_NAME,
806 .info = bfad_im_info,
807 .queuecommand = bfad_im_queuecommand,
808 .eh_timed_out = fc_eh_timed_out,
809 .eh_abort_handler = bfad_im_abort_handler,
810 .eh_device_reset_handler = bfad_im_reset_lun_handler,
811 .eh_target_reset_handler = bfad_im_reset_target_handler,
812
813 .slave_alloc = bfad_im_slave_alloc,
814 .slave_configure = bfad_im_slave_configure,
815 .slave_destroy = bfad_im_slave_destroy,
816
817 .this_id = -1,
818 .sg_tablesize = BFAD_IO_MAX_SGE,
819 .cmd_per_lun = 3,
820 .use_clustering = ENABLE_CLUSTERING,
821 .shost_attrs = bfad_im_host_attrs,
822 .max_sectors = BFAD_MAX_SECTORS,
823 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
824 };
825
826 struct scsi_host_template bfad_im_vport_template = {
827 .module = THIS_MODULE,
828 .name = BFAD_DRIVER_NAME,
829 .info = bfad_im_info,
830 .queuecommand = bfad_im_queuecommand,
831 .eh_timed_out = fc_eh_timed_out,
832 .eh_abort_handler = bfad_im_abort_handler,
833 .eh_device_reset_handler = bfad_im_reset_lun_handler,
834 .eh_target_reset_handler = bfad_im_reset_target_handler,
835
836 .slave_alloc = bfad_im_slave_alloc,
837 .slave_configure = bfad_im_slave_configure,
838 .slave_destroy = bfad_im_slave_destroy,
839
840 .this_id = -1,
841 .sg_tablesize = BFAD_IO_MAX_SGE,
842 .cmd_per_lun = 3,
843 .use_clustering = ENABLE_CLUSTERING,
844 .shost_attrs = bfad_im_vport_attrs,
845 .max_sectors = BFAD_MAX_SECTORS,
846 };
847
848 bfa_status_t
bfad_im_module_init(void)849 bfad_im_module_init(void)
850 {
851 bfad_im_scsi_transport_template =
852 fc_attach_transport(&bfad_im_fc_function_template);
853 if (!bfad_im_scsi_transport_template)
854 return BFA_STATUS_ENOMEM;
855
856 bfad_im_scsi_vport_transport_template =
857 fc_attach_transport(&bfad_im_vport_fc_function_template);
858 if (!bfad_im_scsi_vport_transport_template) {
859 fc_release_transport(bfad_im_scsi_transport_template);
860 return BFA_STATUS_ENOMEM;
861 }
862
863 return BFA_STATUS_OK;
864 }
865
866 void
bfad_im_module_exit(void)867 bfad_im_module_exit(void)
868 {
869 if (bfad_im_scsi_transport_template)
870 fc_release_transport(bfad_im_scsi_transport_template);
871
872 if (bfad_im_scsi_vport_transport_template)
873 fc_release_transport(bfad_im_scsi_vport_transport_template);
874
875 idr_destroy(&bfad_im_port_index);
876 }
877
878 void
bfad_ramp_up_qdepth(struct bfad_itnim_s * itnim,struct scsi_device * sdev)879 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
880 {
881 struct scsi_device *tmp_sdev;
882
883 if (((jiffies - itnim->last_ramp_up_time) >
884 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
885 ((jiffies - itnim->last_queue_full_time) >
886 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
887 shost_for_each_device(tmp_sdev, sdev->host) {
888 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
889 if (tmp_sdev->id != sdev->id)
890 continue;
891 scsi_change_queue_depth(tmp_sdev,
892 tmp_sdev->queue_depth + 1);
893
894 itnim->last_ramp_up_time = jiffies;
895 }
896 }
897 }
898 }
899
900 void
bfad_handle_qfull(struct bfad_itnim_s * itnim,struct scsi_device * sdev)901 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
902 {
903 struct scsi_device *tmp_sdev;
904
905 itnim->last_queue_full_time = jiffies;
906
907 shost_for_each_device(tmp_sdev, sdev->host) {
908 if (tmp_sdev->id != sdev->id)
909 continue;
910 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
911 }
912 }
913
914 struct bfad_itnim_s *
bfad_get_itnim(struct bfad_im_port_s * im_port,int id)915 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
916 {
917 struct bfad_itnim_s *itnim = NULL;
918
919 /* Search the mapped list for this target ID */
920 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
921 if (id == itnim->scsi_tgt_id)
922 return itnim;
923 }
924
925 return NULL;
926 }
927
928 /*
929 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
930 * Has the logic to query the LUN Mask database to check if this LUN needs to
931 * be made visible to the SCSI mid-layer or not.
932 *
933 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
934 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
935 */
936 static int
bfad_im_check_if_make_lun_visible(struct scsi_device * sdev,struct fc_rport * rport)937 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
938 struct fc_rport *rport)
939 {
940 struct bfad_itnim_data_s *itnim_data =
941 (struct bfad_itnim_data_s *) rport->dd_data;
942 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
943 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
944 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
945 int i = 0, ret = -ENXIO;
946
947 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
948 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
949 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
950 lun_list[i].rp_tag == bfa_rport->rport_tag &&
951 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
952 ret = BFA_STATUS_OK;
953 break;
954 }
955 }
956 return ret;
957 }
958
959 /*
960 * Scsi_Host template entry slave_alloc
961 */
962 static int
bfad_im_slave_alloc(struct scsi_device * sdev)963 bfad_im_slave_alloc(struct scsi_device *sdev)
964 {
965 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
966 struct bfad_itnim_data_s *itnim_data;
967 struct bfa_s *bfa;
968
969 if (!rport || fc_remote_port_chkready(rport))
970 return -ENXIO;
971
972 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
973 bfa = itnim_data->itnim->bfa_itnim->bfa;
974
975 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
976 /*
977 * We should not mask LUN 0 - since this will translate
978 * to no LUN / TARGET for SCSI ml resulting no scan.
979 */
980 if (sdev->lun == 0) {
981 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
982 BLIST_SPARSELUN;
983 goto done;
984 }
985
986 /*
987 * Query LUN Mask configuration - to expose this LUN
988 * to the SCSI mid-layer or to mask it.
989 */
990 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
991 BFA_STATUS_OK)
992 return -ENXIO;
993 }
994 done:
995 sdev->hostdata = rport->dd_data;
996
997 return 0;
998 }
999
1000 u32
bfad_im_supported_speeds(struct bfa_s * bfa)1001 bfad_im_supported_speeds(struct bfa_s *bfa)
1002 {
1003 struct bfa_ioc_attr_s *ioc_attr;
1004 u32 supported_speed = 0;
1005
1006 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1007 if (!ioc_attr)
1008 return 0;
1009
1010 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1011 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1012 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1013 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1014 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1015 if (ioc_attr->adapter_attr.is_mezz) {
1016 supported_speed |= FC_PORTSPEED_8GBIT |
1017 FC_PORTSPEED_4GBIT |
1018 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1019 } else {
1020 supported_speed |= FC_PORTSPEED_8GBIT |
1021 FC_PORTSPEED_4GBIT |
1022 FC_PORTSPEED_2GBIT;
1023 }
1024 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1025 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1026 FC_PORTSPEED_1GBIT;
1027 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1028 supported_speed |= FC_PORTSPEED_10GBIT;
1029 }
1030 kfree(ioc_attr);
1031 return supported_speed;
1032 }
1033
1034 void
bfad_fc_host_init(struct bfad_im_port_s * im_port)1035 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1036 {
1037 struct Scsi_Host *host = im_port->shost;
1038 struct bfad_s *bfad = im_port->bfad;
1039 struct bfad_port_s *port = im_port->port;
1040 char symname[BFA_SYMNAME_MAXLEN];
1041 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1042
1043 fc_host_node_name(host) =
1044 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1045 fc_host_port_name(host) =
1046 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1047 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1048
1049 fc_host_supported_classes(host) = FC_COS_CLASS3;
1050
1051 memset(fc_host_supported_fc4s(host), 0,
1052 sizeof(fc_host_supported_fc4s(host)));
1053 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1054 /* For FCP type 0x08 */
1055 fc_host_supported_fc4s(host)[2] = 1;
1056 /* For fibre channel services type 0x20 */
1057 fc_host_supported_fc4s(host)[7] = 1;
1058
1059 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1060 BFA_SYMNAME_MAXLEN);
1061 sprintf(fc_host_symbolic_name(host), "%s", symname);
1062
1063 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1064 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1065 }
1066
1067 static void
bfad_im_fc_rport_add(struct bfad_im_port_s * im_port,struct bfad_itnim_s * itnim)1068 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1069 {
1070 struct fc_rport_identifiers rport_ids;
1071 struct fc_rport *fc_rport;
1072 struct bfad_itnim_data_s *itnim_data;
1073
1074 rport_ids.node_name =
1075 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1076 rport_ids.port_name =
1077 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1078 rport_ids.port_id =
1079 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1080 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1081
1082 itnim->fc_rport = fc_rport =
1083 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1084
1085 if (!fc_rport)
1086 return;
1087
1088 fc_rport->maxframe_size =
1089 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1090 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1091
1092 itnim_data = fc_rport->dd_data;
1093 itnim_data->itnim = itnim;
1094
1095 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1096
1097 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1098 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1099
1100 if ((fc_rport->scsi_target_id != -1)
1101 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1102 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1103
1104 itnim->channel = fc_rport->channel;
1105
1106 return;
1107 }
1108
1109 /*
1110 * Work queue handler using FC transport service
1111 * Context: kernel
1112 */
1113 static void
bfad_im_itnim_work_handler(struct work_struct * work)1114 bfad_im_itnim_work_handler(struct work_struct *work)
1115 {
1116 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1117 itnim_work);
1118 struct bfad_im_s *im = itnim->im;
1119 struct bfad_s *bfad = im->bfad;
1120 struct bfad_im_port_s *im_port;
1121 unsigned long flags;
1122 struct fc_rport *fc_rport;
1123 wwn_t wwpn;
1124 u32 fcid;
1125 char wwpn_str[32], fcid_str[16];
1126
1127 spin_lock_irqsave(&bfad->bfad_lock, flags);
1128 im_port = itnim->im_port;
1129 bfa_trc(bfad, itnim->state);
1130 switch (itnim->state) {
1131 case ITNIM_STATE_ONLINE:
1132 if (!itnim->fc_rport) {
1133 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1134 bfad_im_fc_rport_add(im_port, itnim);
1135 spin_lock_irqsave(&bfad->bfad_lock, flags);
1136 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1137 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1138 wwn2str(wwpn_str, wwpn);
1139 fcid2str(fcid_str, fcid);
1140 list_add_tail(&itnim->list_entry,
1141 &im_port->itnim_mapped_list);
1142 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1143 "ITNIM ONLINE Target: %d:0:%d "
1144 "FCID: %s WWPN: %s\n",
1145 im_port->shost->host_no,
1146 itnim->scsi_tgt_id,
1147 fcid_str, wwpn_str);
1148 } else {
1149 printk(KERN_WARNING
1150 "%s: itnim %llx is already in online state\n",
1151 __func__,
1152 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1153 }
1154
1155 break;
1156 case ITNIM_STATE_OFFLINE_PENDING:
1157 itnim->state = ITNIM_STATE_OFFLINE;
1158 if (itnim->fc_rport) {
1159 fc_rport = itnim->fc_rport;
1160 ((struct bfad_itnim_data_s *)
1161 fc_rport->dd_data)->itnim = NULL;
1162 itnim->fc_rport = NULL;
1163 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1164 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1165 fc_rport->dev_loss_tmo =
1166 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1167 fc_remote_port_delete(fc_rport);
1168 spin_lock_irqsave(&bfad->bfad_lock, flags);
1169 }
1170 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1171 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1172 wwn2str(wwpn_str, wwpn);
1173 fcid2str(fcid_str, fcid);
1174 list_del(&itnim->list_entry);
1175 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1176 "ITNIM OFFLINE Target: %d:0:%d "
1177 "FCID: %s WWPN: %s\n",
1178 im_port->shost->host_no,
1179 itnim->scsi_tgt_id,
1180 fcid_str, wwpn_str);
1181 }
1182 break;
1183 case ITNIM_STATE_FREE:
1184 if (itnim->fc_rport) {
1185 fc_rport = itnim->fc_rport;
1186 ((struct bfad_itnim_data_s *)
1187 fc_rport->dd_data)->itnim = NULL;
1188 itnim->fc_rport = NULL;
1189 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1190 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1191 fc_rport->dev_loss_tmo =
1192 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1193 fc_remote_port_delete(fc_rport);
1194 spin_lock_irqsave(&bfad->bfad_lock, flags);
1195 }
1196 list_del(&itnim->list_entry);
1197 }
1198
1199 kfree(itnim);
1200 break;
1201 default:
1202 WARN_ON(1);
1203 break;
1204 }
1205
1206 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1207 }
1208
1209 /*
1210 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1211 */
1212 static int
bfad_im_queuecommand_lck(struct scsi_cmnd * cmnd,void (* done)(struct scsi_cmnd *))1213 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1214 {
1215 struct bfad_im_port_s *im_port =
1216 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1217 struct bfad_s *bfad = im_port->bfad;
1218 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1219 struct bfad_itnim_s *itnim;
1220 struct bfa_ioim_s *hal_io;
1221 unsigned long flags;
1222 int rc;
1223 int sg_cnt = 0;
1224 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1225
1226 rc = fc_remote_port_chkready(rport);
1227 if (rc) {
1228 cmnd->result = rc;
1229 done(cmnd);
1230 return 0;
1231 }
1232
1233 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1234 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1235 cmnd->result = DID_NO_CONNECT << 16;
1236 else
1237 cmnd->result = DID_REQUEUE << 16;
1238 done(cmnd);
1239 return 0;
1240 }
1241
1242 sg_cnt = scsi_dma_map(cmnd);
1243 if (sg_cnt < 0)
1244 return SCSI_MLQUEUE_HOST_BUSY;
1245
1246 cmnd->scsi_done = done;
1247
1248 spin_lock_irqsave(&bfad->bfad_lock, flags);
1249 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1250 printk(KERN_WARNING
1251 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1252 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1253 cmnd->result = DID_NO_CONNECT << 16;
1254 goto out_fail_cmd;
1255 }
1256
1257
1258 itnim = itnim_data->itnim;
1259 if (!itnim) {
1260 cmnd->result = DID_IMM_RETRY << 16;
1261 goto out_fail_cmd;
1262 }
1263
1264 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1265 itnim->bfa_itnim, sg_cnt);
1266 if (!hal_io) {
1267 printk(KERN_WARNING "hal_io failure\n");
1268 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1269 scsi_dma_unmap(cmnd);
1270 return SCSI_MLQUEUE_HOST_BUSY;
1271 }
1272
1273 cmnd->host_scribble = (char *)hal_io;
1274 bfa_ioim_start(hal_io);
1275 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1276
1277 return 0;
1278
1279 out_fail_cmd:
1280 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1281 scsi_dma_unmap(cmnd);
1282 if (done)
1283 done(cmnd);
1284
1285 return 0;
1286 }
1287
DEF_SCSI_QCMD(bfad_im_queuecommand)1288 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1289
1290 void
1291 bfad_rport_online_wait(struct bfad_s *bfad)
1292 {
1293 int i;
1294 int rport_delay = 10;
1295
1296 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1297 && i < bfa_linkup_delay; i++) {
1298 set_current_state(TASK_UNINTERRUPTIBLE);
1299 schedule_timeout(HZ);
1300 }
1301
1302 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1303 rport_delay = rport_delay < bfa_linkup_delay ?
1304 rport_delay : bfa_linkup_delay;
1305 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1306 && i < rport_delay; i++) {
1307 set_current_state(TASK_UNINTERRUPTIBLE);
1308 schedule_timeout(HZ);
1309 }
1310
1311 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1312 set_current_state(TASK_UNINTERRUPTIBLE);
1313 schedule_timeout(rport_delay * HZ);
1314 }
1315 }
1316 }
1317
1318 int
bfad_get_linkup_delay(struct bfad_s * bfad)1319 bfad_get_linkup_delay(struct bfad_s *bfad)
1320 {
1321 u8 nwwns = 0;
1322 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1323 int linkup_delay;
1324
1325 /*
1326 * Querying for the boot target port wwns
1327 * -- read from boot information in flash.
1328 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1329 * else => local boot machine set linkup_delay = 0
1330 */
1331
1332 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1333
1334 if (nwwns > 0)
1335 /* If Boot over SAN set linkup_delay = 30sec */
1336 linkup_delay = 30;
1337 else
1338 /* If local boot; no linkup_delay */
1339 linkup_delay = 0;
1340
1341 return linkup_delay;
1342 }
1343
