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 = ScsiResult(host_status, scsi_status);
74
75 break;
76
77 case BFI_IOIM_STS_TIMEDOUT:
78 host_status = DID_TIME_OUT;
79 cmnd->result = ScsiResult(host_status, 0);
80 break;
81 case BFI_IOIM_STS_PATHTOV:
82 host_status = DID_TRANSPORT_DISRUPTED;
83 cmnd->result = ScsiResult(host_status, 0);
84 break;
85 default:
86 host_status = DID_ERROR;
87 cmnd->result = ScsiResult(host_status, 0);
88 }
89
90 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
91 if (cmnd->device->host != NULL)
92 scsi_dma_unmap(cmnd);
93
94 cmnd->host_scribble = NULL;
95 bfa_trc(bfad, cmnd->result);
96
97 itnim_data = cmnd->device->hostdata;
98 if (itnim_data) {
99 itnim = itnim_data->itnim;
100 if (!cmnd->result && itnim &&
101 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
102 /* Queue depth adjustment for good status completion */
103 bfad_ramp_up_qdepth(itnim, cmnd->device);
104 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
105 /* qfull handling */
106 bfad_handle_qfull(itnim, cmnd->device);
107 }
108 }
109
110 cmnd->scsi_done(cmnd);
111 }
112
113 void
bfa_cb_ioim_good_comp(void * drv,struct bfad_ioim_s * dio)114 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
115 {
116 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
117 struct bfad_itnim_data_s *itnim_data;
118 struct bfad_itnim_s *itnim;
119
120 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
121
122 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
123 if (cmnd->device->host != NULL)
124 scsi_dma_unmap(cmnd);
125
126 cmnd->host_scribble = NULL;
127
128 /* Queue depth adjustment */
129 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
130 itnim_data = cmnd->device->hostdata;
131 if (itnim_data) {
132 itnim = itnim_data->itnim;
133 if (itnim)
134 bfad_ramp_up_qdepth(itnim, cmnd->device);
135 }
136 }
137
138 cmnd->scsi_done(cmnd);
139 }
140
141 void
bfa_cb_ioim_abort(void * drv,struct bfad_ioim_s * dio)142 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
143 {
144 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
145 struct bfad_s *bfad = drv;
146
147 cmnd->result = ScsiResult(DID_ERROR, 0);
148
149 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
150 if (cmnd->device->host != NULL)
151 scsi_dma_unmap(cmnd);
152
153 bfa_trc(bfad, cmnd->result);
154 cmnd->host_scribble = NULL;
155 }
156
157 void
bfa_cb_tskim_done(void * bfad,struct bfad_tskim_s * dtsk,enum bfi_tskim_status tsk_status)158 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
159 enum bfi_tskim_status tsk_status)
160 {
161 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
162 wait_queue_head_t *wq;
163
164 cmnd->SCp.Status |= tsk_status << 1;
165 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
166 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
167 cmnd->SCp.ptr = NULL;
168
169 if (wq)
170 wake_up(wq);
171 }
172
173 /*
174 * Scsi_Host_template SCSI host template
175 */
176 /*
177 * Scsi_Host template entry, returns BFAD PCI info.
178 */
179 static const char *
bfad_im_info(struct Scsi_Host * shost)180 bfad_im_info(struct Scsi_Host *shost)
181 {
182 static char bfa_buf[256];
183 struct bfad_im_port_s *im_port =
184 (struct bfad_im_port_s *) shost->hostdata[0];
185 struct bfad_s *bfad = im_port->bfad;
186
187 memset(bfa_buf, 0, sizeof(bfa_buf));
188 snprintf(bfa_buf, sizeof(bfa_buf),
189 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",
190 bfad->pci_name, BFAD_DRIVER_VERSION);
191
192 return bfa_buf;
193 }
194
195 /*
196 * Scsi_Host template entry, aborts the specified SCSI command.
197 *
198 * Returns: SUCCESS or FAILED.
199 */
200 static int
bfad_im_abort_handler(struct scsi_cmnd * cmnd)201 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
202 {
203 struct Scsi_Host *shost = cmnd->device->host;
204 struct bfad_im_port_s *im_port =
205 (struct bfad_im_port_s *) shost->hostdata[0];
206 struct bfad_s *bfad = im_port->bfad;
207 struct bfa_ioim_s *hal_io;
208 unsigned long flags;
209 u32 timeout;
210 int rc = FAILED;
211
212 spin_lock_irqsave(&bfad->bfad_lock, flags);
213 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
214 if (!hal_io) {
215 /* IO has been completed, return success */
216 rc = SUCCESS;
217 goto out;
218 }
219 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
220 rc = FAILED;
221 goto out;
222 }
223
224 bfa_trc(bfad, hal_io->iotag);
225 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
226 "scsi%d: abort cmnd %p iotag %x\n",
227 im_port->shost->host_no, cmnd, hal_io->iotag);
228 (void) bfa_ioim_abort(hal_io);
229 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
230
231 /* Need to wait until the command get aborted */
232 timeout = 10;
233 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
234 set_current_state(TASK_UNINTERRUPTIBLE);
235 schedule_timeout(timeout);
236 if (timeout < 4 * HZ)
237 timeout *= 2;
238 }
239
240 cmnd->scsi_done(cmnd);
241 bfa_trc(bfad, hal_io->iotag);
242 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
243 "scsi%d: complete abort 0x%p iotag 0x%x\n",
244 im_port->shost->host_no, cmnd, hal_io->iotag);
245 return SUCCESS;
246 out:
247 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
248 return rc;
249 }
250
251 static bfa_status_t
bfad_im_target_reset_send(struct bfad_s * bfad,struct scsi_cmnd * cmnd,struct bfad_itnim_s * itnim)252 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
253 struct bfad_itnim_s *itnim)
254 {
255 struct bfa_tskim_s *tskim;
256 struct bfa_itnim_s *bfa_itnim;
257 bfa_status_t rc = BFA_STATUS_OK;
258 struct scsi_lun scsilun;
259
260 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
261 if (!tskim) {
262 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
263 "target reset, fail to allocate tskim\n");
264 rc = BFA_STATUS_FAILED;
265 goto out;
266 }
267
268 /*
269 * Set host_scribble to NULL to avoid aborting a task command if
270 * happens.
271 */
272 cmnd->host_scribble = NULL;
273 cmnd->SCp.Status = 0;
274 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
275 /*
276 * bfa_itnim can be NULL if the port gets disconnected and the bfa
277 * and fcs layers have cleaned up their nexus with the targets and
278 * the same has not been cleaned up by the shim
279 */
280 if (bfa_itnim == NULL) {
281 bfa_tskim_free(tskim);
282 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
283 "target reset, bfa_itnim is NULL\n");
284 rc = BFA_STATUS_FAILED;
285 goto out;
286 }
287
288 memset(&scsilun, 0, sizeof(scsilun));
289 bfa_tskim_start(tskim, bfa_itnim, scsilun,
290 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
291 out:
292 return rc;
293 }
294
295 /*
296 * Scsi_Host template entry, resets a LUN and abort its all commands.
297 *
298 * Returns: SUCCESS or FAILED.
299 *
300 */
301 static int
bfad_im_reset_lun_handler(struct scsi_cmnd * cmnd)302 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
303 {
304 struct Scsi_Host *shost = cmnd->device->host;
305 struct bfad_im_port_s *im_port =
306 (struct bfad_im_port_s *) shost->hostdata[0];
307 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
308 struct bfad_s *bfad = im_port->bfad;
309 struct bfa_tskim_s *tskim;
310 struct bfad_itnim_s *itnim;
311 struct bfa_itnim_s *bfa_itnim;
312 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
313 int rc = SUCCESS;
314 unsigned long flags;
315 enum bfi_tskim_status task_status;
316 struct scsi_lun scsilun;
317
318 spin_lock_irqsave(&bfad->bfad_lock, flags);
319 itnim = itnim_data->itnim;
320 if (!itnim) {
321 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
322 rc = FAILED;
323 goto out;
324 }
325
326 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
327 if (!tskim) {
328 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
329 "LUN reset, fail to allocate tskim");
330 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
331 rc = FAILED;
332 goto out;
333 }
334
335 /*
336 * Set host_scribble to NULL to avoid aborting a task command
337 * if happens.
338 */
339 cmnd->host_scribble = NULL;
340 cmnd->SCp.ptr = (char *)&wq;
341 cmnd->SCp.Status = 0;
342 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
343 /*
344 * bfa_itnim can be NULL if the port gets disconnected and the bfa
345 * and fcs layers have cleaned up their nexus with the targets and
346 * the same has not been cleaned up by the shim
347 */
348 if (bfa_itnim == NULL) {
349 bfa_tskim_free(tskim);
350 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
351 "lun reset, bfa_itnim is NULL\n");
352 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
353 rc = FAILED;
354 goto out;
355 }
356 int_to_scsilun(cmnd->device->lun, &scsilun);
357 bfa_tskim_start(tskim, bfa_itnim, scsilun,
358 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
359 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
360
361 wait_event(wq, test_bit(IO_DONE_BIT,
362 (unsigned long *)&cmnd->SCp.Status));
363
364 task_status = cmnd->SCp.Status >> 1;
365 if (task_status != BFI_TSKIM_STS_OK) {
366 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
367 "LUN reset failure, status: %d\n", task_status);
368 rc = FAILED;
369 }
370
371 out:
372 return rc;
373 }
374
375 /*
376 * Scsi_Host template entry, resets the bus and abort all commands.
377 */
378 static int
bfad_im_reset_bus_handler(struct scsi_cmnd * cmnd)379 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd)
380 {
381 struct Scsi_Host *shost = cmnd->device->host;
382 struct bfad_im_port_s *im_port =
383 (struct bfad_im_port_s *) shost->hostdata[0];
384 struct bfad_s *bfad = im_port->bfad;
385 struct bfad_itnim_s *itnim;
386 unsigned long flags;
387 u32 i, rc, err_cnt = 0;
388 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
389 enum bfi_tskim_status task_status;
390
391 spin_lock_irqsave(&bfad->bfad_lock, flags);
392 for (i = 0; i < MAX_FCP_TARGET; i++) {
393 itnim = bfad_get_itnim(im_port, i);
394 if (itnim) {
395 cmnd->SCp.ptr = (char *)&wq;
396 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
397 if (rc != BFA_STATUS_OK) {
398 err_cnt++;
399 continue;
400 }
401
402 /* wait target reset to complete */
403 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
404 wait_event(wq, test_bit(IO_DONE_BIT,
405 (unsigned long *)&cmnd->SCp.Status));
406 spin_lock_irqsave(&bfad->bfad_lock, flags);
407
408 task_status = cmnd->SCp.Status >> 1;
409 if (task_status != BFI_TSKIM_STS_OK) {
410 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
411 "target reset failure,"
412 " status: %d\n", task_status);
413 err_cnt++;
414 }
415 }
416 }
417 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
418
419 if (err_cnt)
420 return FAILED;
421
422 return SUCCESS;
423 }
424
425 /*
426 * Scsi_Host template entry slave_destroy.
427 */
428 static void
bfad_im_slave_destroy(struct scsi_device * sdev)429 bfad_im_slave_destroy(struct scsi_device *sdev)
430 {
431 sdev->hostdata = NULL;
432 return;
433 }
434
435 /*
436 * BFA FCS itnim callbacks
437 */
438
439 /*
440 * BFA FCS itnim alloc callback, after successful PRLI
441 * Context: Interrupt
442 */
443 int
bfa_fcb_itnim_alloc(struct bfad_s * bfad,struct bfa_fcs_itnim_s ** itnim,struct bfad_itnim_s ** itnim_drv)444 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
445 struct bfad_itnim_s **itnim_drv)
446 {
447 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
448 if (*itnim_drv == NULL)
449 return -ENOMEM;
450
451 (*itnim_drv)->im = bfad->im;
452 *itnim = &(*itnim_drv)->fcs_itnim;
453 (*itnim_drv)->state = ITNIM_STATE_NONE;
454
455 /*
456 * Initiaze the itnim_work
457 */
458 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
459 bfad->bfad_flags |= BFAD_RPORT_ONLINE;
460 return 0;
461 }
462
463 /*
464 * BFA FCS itnim free callback.
465 * Context: Interrupt. bfad_lock is held
466 */
467 void
bfa_fcb_itnim_free(struct bfad_s * bfad,struct bfad_itnim_s * itnim_drv)468 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
469 {
470 struct bfad_port_s *port;
471 wwn_t wwpn;
472 u32 fcid;
473 char wwpn_str[32], fcid_str[16];
474 struct bfad_im_s *im = itnim_drv->im;
475
476 /* online to free state transtion should not happen */
477 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
478
479 itnim_drv->queue_work = 1;
480 /* offline request is not yet done, use the same request to free */
481 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
482 itnim_drv->queue_work = 0;
483
484 itnim_drv->state = ITNIM_STATE_FREE;
485 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
486 itnim_drv->im_port = port->im_port;
487 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
488 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
489 wwn2str(wwpn_str, wwpn);
490 fcid2str(fcid_str, fcid);
491 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
492 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
493 port->im_port->shost->host_no,
494 fcid_str, wwpn_str);
495
496 /* ITNIM processing */
497 if (itnim_drv->queue_work)
498 queue_work(im->drv_workq, &itnim_drv->itnim_work);
499 }
500
501 /*
502 * BFA FCS itnim online callback.
503 * Context: Interrupt. bfad_lock is held
504 */
505 void
bfa_fcb_itnim_online(struct bfad_itnim_s * itnim_drv)506 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
507 {
508 struct bfad_port_s *port;
509 struct bfad_im_s *im = itnim_drv->im;
510
511 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
512 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
513 itnim_drv->state = ITNIM_STATE_ONLINE;
514 itnim_drv->queue_work = 1;
515 itnim_drv->im_port = port->im_port;
516
517 /* ITNIM processing */
518 if (itnim_drv->queue_work)
519 queue_work(im->drv_workq, &itnim_drv->itnim_work);
520 }
521
522 /*
523 * BFA FCS itnim offline callback.
524 * Context: Interrupt. bfad_lock is held
525 */
526 void
bfa_fcb_itnim_offline(struct bfad_itnim_s * itnim_drv)527 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
528 {
529 struct bfad_port_s *port;
530 struct bfad_s *bfad;
531 struct bfad_im_s *im = itnim_drv->im;
532
533 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
534 bfad = port->bfad;
535 if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
536 (port->flags & BFAD_PORT_DELETE)) {
537 itnim_drv->state = ITNIM_STATE_OFFLINE;
538 return;
539 }
540 itnim_drv->im_port = port->im_port;
541 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
542 itnim_drv->queue_work = 1;
543
544 /* ITNIM processing */
545 if (itnim_drv->queue_work)
546 queue_work(im->drv_workq, &itnim_drv->itnim_work);
547 }
548
549 /*
550 * Allocate a Scsi_Host for a port.
551 */
552 int
bfad_im_scsi_host_alloc(struct bfad_s * bfad,struct bfad_im_port_s * im_port,struct device * dev)553 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
554 struct device *dev)
555 {
556 int error = 1;
557
558 mutex_lock(&bfad_mutex);
559 error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
560 if (error < 0) {
561 mutex_unlock(&bfad_mutex);
562 printk(KERN_WARNING "idr_alloc failure\n");
563 goto out;
564 }
565 im_port->idr_id = error;
566 mutex_unlock(&bfad_mutex);
567
568 im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
569 if (!im_port->shost) {
570 error = 1;
571 goto out_free_idr;
572 }
573
574 im_port->shost->hostdata[0] = (unsigned long)im_port;
575 im_port->shost->unique_id = im_port->idr_id;
576 im_port->shost->this_id = -1;
577 im_port->shost->max_id = MAX_FCP_TARGET;
578 im_port->shost->max_lun = MAX_FCP_LUN;
579 im_port->shost->max_cmd_len = 16;
580 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
581 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
582 im_port->shost->transportt = bfad_im_scsi_transport_template;
583 else
584 im_port->shost->transportt =
585 bfad_im_scsi_vport_transport_template;
586
587 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
588 if (error) {
589 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
590 goto out_fc_rel;
591 }
592
593 return 0;
594
595 out_fc_rel:
596 scsi_host_put(im_port->shost);
597 im_port->shost = NULL;
598 out_free_idr:
599 mutex_lock(&bfad_mutex);
600 idr_remove(&bfad_im_port_index, im_port->idr_id);
601 mutex_unlock(&bfad_mutex);
602 out:
603 return error;
604 }
605
606 void
bfad_im_scsi_host_free(struct bfad_s * bfad,struct bfad_im_port_s * im_port)607 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
608 {
609 bfa_trc(bfad, bfad->inst_no);
610 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
611 im_port->shost->host_no);
612
613 fc_remove_host(im_port->shost);
614
615 scsi_remove_host(im_port->shost);
616 scsi_host_put(im_port->shost);
617
618 mutex_lock(&bfad_mutex);
619 idr_remove(&bfad_im_port_index, im_port->idr_id);
620 mutex_unlock(&bfad_mutex);
621 }
622
623 static void
bfad_im_port_delete_handler(struct work_struct * work)624 bfad_im_port_delete_handler(struct work_struct *work)
625 {
626 struct bfad_im_port_s *im_port =
627 container_of(work, struct bfad_im_port_s, port_delete_work);
628
629 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
630 im_port->flags |= BFAD_PORT_DELETE;
631 fc_vport_terminate(im_port->fc_vport);
632 }
633 }
634
635 bfa_status_t
bfad_im_port_new(struct bfad_s * bfad,struct bfad_port_s * port)636 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
637 {
638 int rc = BFA_STATUS_OK;
639 struct bfad_im_port_s *im_port;
640
641 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
642 if (im_port == NULL) {
643 rc = BFA_STATUS_ENOMEM;
644 goto ext;
645 }
646 port->im_port = im_port;
647 im_port->port = port;
648 im_port->bfad = bfad;
649
650 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
651 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
652 INIT_LIST_HEAD(&im_port->binding_list);
653
654 ext:
655 return rc;
656 }
657
658 void
bfad_im_port_delete(struct bfad_s * bfad,struct bfad_port_s * port)659 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
660 {
661 struct bfad_im_port_s *im_port = port->im_port;
662
663 queue_work(bfad->im->drv_workq,
664 &im_port->port_delete_work);
665 }
666
667 void
bfad_im_port_clean(struct bfad_im_port_s * im_port)668 bfad_im_port_clean(struct bfad_im_port_s *im_port)
669 {
670 struct bfad_fcp_binding *bp, *bp_new;
671 unsigned long flags;
672 struct bfad_s *bfad = im_port->bfad;
673
674 spin_lock_irqsave(&bfad->bfad_lock, flags);
675 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
676 list_entry) {
677 list_del(&bp->list_entry);
678 kfree(bp);
679 }
680
681 /* the itnim_mapped_list must be empty at this time */
682 WARN_ON(!list_empty(&im_port->itnim_mapped_list));
683
684 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
685 }
686
bfad_aen_im_notify_handler(struct work_struct * work)687 static void bfad_aen_im_notify_handler(struct work_struct *work)
688 {
689 struct bfad_im_s *im =
690 container_of(work, struct bfad_im_s, aen_im_notify_work);
691 struct bfa_aen_entry_s *aen_entry;
692 struct bfad_s *bfad = im->bfad;
693 struct Scsi_Host *shost = bfad->pport.im_port->shost;
694 void *event_data;
695 unsigned long flags;
696
697 while (!list_empty(&bfad->active_aen_q)) {
698 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
699 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
700 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
701 event_data = (char *)aen_entry + sizeof(struct list_head);
702 fc_host_post_vendor_event(shost, fc_get_event_number(),
703 sizeof(struct bfa_aen_entry_s) -
704 sizeof(struct list_head),
705 (char *)event_data, BFAD_NL_VENDOR_ID);
706 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
707 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
708 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
709 }
710 }
711
712 bfa_status_t
bfad_im_probe(struct bfad_s * bfad)713 bfad_im_probe(struct bfad_s *bfad)
714 {
715 struct bfad_im_s *im;
716
717 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
718 if (im == NULL)
719 return BFA_STATUS_ENOMEM;
720
721 bfad->im = im;
722 im->bfad = bfad;
723
724 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
725 kfree(im);
726 return BFA_STATUS_FAILED;
727 }
728
729 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
730 return BFA_STATUS_OK;
731 }
732
733 void
bfad_im_probe_undo(struct bfad_s * bfad)734 bfad_im_probe_undo(struct bfad_s *bfad)
735 {
736 if (bfad->im) {
737 bfad_destroy_workq(bfad->im);
738 kfree(bfad->im);
739 bfad->im = NULL;
740 }
741 }
742
743 struct Scsi_Host *
bfad_scsi_host_alloc(struct bfad_im_port_s * im_port,struct bfad_s * bfad)744 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
745 {
746 struct scsi_host_template *sht;
747
748 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
749 sht = &bfad_im_scsi_host_template;
750 else
751 sht = &bfad_im_vport_template;
752
753 if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
754 sht->max_sectors = max_xfer_size << 1;
755
756 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
757
758 return scsi_host_alloc(sht, sizeof(unsigned long));
759 }
760
761 void
bfad_scsi_host_free(struct bfad_s * bfad,struct bfad_im_port_s * im_port)762 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
763 {
764 if (!(im_port->flags & BFAD_PORT_DELETE))
765 flush_workqueue(bfad->im->drv_workq);
766 bfad_im_scsi_host_free(im_port->bfad, im_port);
767 bfad_im_port_clean(im_port);
768 kfree(im_port);
769 }
770
771 void
bfad_destroy_workq(struct bfad_im_s * im)772 bfad_destroy_workq(struct bfad_im_s *im)
773 {
774 if (im && im->drv_workq) {
775 flush_workqueue(im->drv_workq);
776 destroy_workqueue(im->drv_workq);
777 im->drv_workq = NULL;
778 }
779 }
780
781 bfa_status_t
bfad_thread_workq(struct bfad_s * bfad)782 bfad_thread_workq(struct bfad_s *bfad)
783 {
784 struct bfad_im_s *im = bfad->im;
785
786 bfa_trc(bfad, 0);
787 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
788 bfad->inst_no);
789 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
790 if (!im->drv_workq)
791 return BFA_STATUS_FAILED;
792
793 return BFA_STATUS_OK;
794 }
795
796 /*
797 * Scsi_Host template entry.
798 *
799 * Description:
800 * OS entry point to adjust the queue_depths on a per-device basis.
801 * Called once per device during the bus scan.
802 * Return non-zero if fails.
803 */
804 static int
bfad_im_slave_configure(struct scsi_device * sdev)805 bfad_im_slave_configure(struct scsi_device *sdev)
806 {
807 scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
808 return 0;
809 }
810
811 struct scsi_host_template bfad_im_scsi_host_template = {
812 .module = THIS_MODULE,
813 .name = BFAD_DRIVER_NAME,
814 .info = bfad_im_info,
815 .queuecommand = bfad_im_queuecommand,
816 .eh_abort_handler = bfad_im_abort_handler,
817 .eh_device_reset_handler = bfad_im_reset_lun_handler,
818 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
819
820 .slave_alloc = bfad_im_slave_alloc,
821 .slave_configure = bfad_im_slave_configure,
822 .slave_destroy = bfad_im_slave_destroy,
823
824 .this_id = -1,
825 .sg_tablesize = BFAD_IO_MAX_SGE,
826 .cmd_per_lun = 3,
827 .use_clustering = ENABLE_CLUSTERING,
828 .shost_attrs = bfad_im_host_attrs,
829 .max_sectors = BFAD_MAX_SECTORS,
830 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
831 };
832
833 struct scsi_host_template bfad_im_vport_template = {
834 .module = THIS_MODULE,
835 .name = BFAD_DRIVER_NAME,
836 .info = bfad_im_info,
837 .queuecommand = bfad_im_queuecommand,
838 .eh_abort_handler = bfad_im_abort_handler,
839 .eh_device_reset_handler = bfad_im_reset_lun_handler,
840 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
841
842 .slave_alloc = bfad_im_slave_alloc,
843 .slave_configure = bfad_im_slave_configure,
844 .slave_destroy = bfad_im_slave_destroy,
845
846 .this_id = -1,
847 .sg_tablesize = BFAD_IO_MAX_SGE,
848 .cmd_per_lun = 3,
849 .use_clustering = ENABLE_CLUSTERING,
850 .shost_attrs = bfad_im_vport_attrs,
851 .max_sectors = BFAD_MAX_SECTORS,
852 };
853
854 bfa_status_t
bfad_im_module_init(void)855 bfad_im_module_init(void)
856 {
857 bfad_im_scsi_transport_template =
858 fc_attach_transport(&bfad_im_fc_function_template);
859 if (!bfad_im_scsi_transport_template)
860 return BFA_STATUS_ENOMEM;
861
862 bfad_im_scsi_vport_transport_template =
863 fc_attach_transport(&bfad_im_vport_fc_function_template);
864 if (!bfad_im_scsi_vport_transport_template) {
865 fc_release_transport(bfad_im_scsi_transport_template);
866 return BFA_STATUS_ENOMEM;
867 }
868
869 return BFA_STATUS_OK;
870 }
871
872 void
bfad_im_module_exit(void)873 bfad_im_module_exit(void)
874 {
875 if (bfad_im_scsi_transport_template)
876 fc_release_transport(bfad_im_scsi_transport_template);
877
878 if (bfad_im_scsi_vport_transport_template)
879 fc_release_transport(bfad_im_scsi_vport_transport_template);
880
881 idr_destroy(&bfad_im_port_index);
882 }
883
884 void
bfad_ramp_up_qdepth(struct bfad_itnim_s * itnim,struct scsi_device * sdev)885 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
886 {
887 struct scsi_device *tmp_sdev;
888
889 if (((jiffies - itnim->last_ramp_up_time) >
890 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
891 ((jiffies - itnim->last_queue_full_time) >
892 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
893 shost_for_each_device(tmp_sdev, sdev->host) {
894 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
895 if (tmp_sdev->id != sdev->id)
896 continue;
897 scsi_change_queue_depth(tmp_sdev,
898 tmp_sdev->queue_depth + 1);
899
900 itnim->last_ramp_up_time = jiffies;
901 }
902 }
903 }
904 }
905
906 void
bfad_handle_qfull(struct bfad_itnim_s * itnim,struct scsi_device * sdev)907 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
908 {
909 struct scsi_device *tmp_sdev;
910
911 itnim->last_queue_full_time = jiffies;
912
913 shost_for_each_device(tmp_sdev, sdev->host) {
914 if (tmp_sdev->id != sdev->id)
915 continue;
916 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
917 }
918 }
919
920 struct bfad_itnim_s *
bfad_get_itnim(struct bfad_im_port_s * im_port,int id)921 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
922 {
923 struct bfad_itnim_s *itnim = NULL;
924
925 /* Search the mapped list for this target ID */
926 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
927 if (id == itnim->scsi_tgt_id)
928 return itnim;
929 }
930
931 return NULL;
932 }
933
934 /*
935 * Function is invoked from the SCSI Host Template slave_alloc() entry point.
936 * Has the logic to query the LUN Mask database to check if this LUN needs to
937 * be made visible to the SCSI mid-layer or not.
938 *
939 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
940 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
941 */
942 static int
bfad_im_check_if_make_lun_visible(struct scsi_device * sdev,struct fc_rport * rport)943 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
944 struct fc_rport *rport)
945 {
946 struct bfad_itnim_data_s *itnim_data =
947 (struct bfad_itnim_data_s *) rport->dd_data;
948 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
949 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
950 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
951 int i = 0, ret = -ENXIO;
952
953 for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
954 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
955 scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
956 lun_list[i].rp_tag == bfa_rport->rport_tag &&
957 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
958 ret = BFA_STATUS_OK;
959 break;
960 }
961 }
962 return ret;
963 }
964
965 /*
966 * Scsi_Host template entry slave_alloc
967 */
968 static int
bfad_im_slave_alloc(struct scsi_device * sdev)969 bfad_im_slave_alloc(struct scsi_device *sdev)
970 {
971 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
972 struct bfad_itnim_data_s *itnim_data;
973 struct bfa_s *bfa;
974
975 if (!rport || fc_remote_port_chkready(rport))
976 return -ENXIO;
977
978 itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
979 bfa = itnim_data->itnim->bfa_itnim->bfa;
980
981 if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
982 /*
983 * We should not mask LUN 0 - since this will translate
984 * to no LUN / TARGET for SCSI ml resulting no scan.
985 */
986 if (sdev->lun == 0) {
987 sdev->sdev_bflags |= BLIST_NOREPORTLUN |
988 BLIST_SPARSELUN;
989 goto done;
990 }
991
992 /*
993 * Query LUN Mask configuration - to expose this LUN
994 * to the SCSI mid-layer or to mask it.
995 */
996 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
997 BFA_STATUS_OK)
998 return -ENXIO;
999 }
1000 done:
1001 sdev->hostdata = rport->dd_data;
1002
1003 return 0;
1004 }
1005
1006 u32
bfad_im_supported_speeds(struct bfa_s * bfa)1007 bfad_im_supported_speeds(struct bfa_s *bfa)
1008 {
1009 struct bfa_ioc_attr_s *ioc_attr;
1010 u32 supported_speed = 0;
1011
1012 ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
1013 if (!ioc_attr)
1014 return 0;
1015
1016 bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1017 if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1018 supported_speed |= FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1019 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1020 else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1021 if (ioc_attr->adapter_attr.is_mezz) {
1022 supported_speed |= FC_PORTSPEED_8GBIT |
1023 FC_PORTSPEED_4GBIT |
1024 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1025 } else {
1026 supported_speed |= FC_PORTSPEED_8GBIT |
1027 FC_PORTSPEED_4GBIT |
1028 FC_PORTSPEED_2GBIT;
1029 }
1030 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1031 supported_speed |= FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1032 FC_PORTSPEED_1GBIT;
1033 } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1034 supported_speed |= FC_PORTSPEED_10GBIT;
1035 }
1036 kfree(ioc_attr);
1037 return supported_speed;
1038 }
1039
1040 void
bfad_fc_host_init(struct bfad_im_port_s * im_port)1041 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1042 {
1043 struct Scsi_Host *host = im_port->shost;
1044 struct bfad_s *bfad = im_port->bfad;
1045 struct bfad_port_s *port = im_port->port;
1046 char symname[BFA_SYMNAME_MAXLEN];
1047 struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1048
1049 fc_host_node_name(host) =
1050 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1051 fc_host_port_name(host) =
1052 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1053 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1054
1055 fc_host_supported_classes(host) = FC_COS_CLASS3;
1056
1057 memset(fc_host_supported_fc4s(host), 0,
1058 sizeof(fc_host_supported_fc4s(host)));
1059 if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1060 /* For FCP type 0x08 */
1061 fc_host_supported_fc4s(host)[2] = 1;
1062 /* For fibre channel services type 0x20 */
1063 fc_host_supported_fc4s(host)[7] = 1;
1064
1065 strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1066 BFA_SYMNAME_MAXLEN);
1067 sprintf(fc_host_symbolic_name(host), "%s", symname);
1068
1069 fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1070 fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1071 }
1072
1073 static void
bfad_im_fc_rport_add(struct bfad_im_port_s * im_port,struct bfad_itnim_s * itnim)1074 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1075 {
1076 struct fc_rport_identifiers rport_ids;
1077 struct fc_rport *fc_rport;
1078 struct bfad_itnim_data_s *itnim_data;
1079
1080 rport_ids.node_name =
1081 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1082 rport_ids.port_name =
1083 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1084 rport_ids.port_id =
1085 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1086 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1087
1088 itnim->fc_rport = fc_rport =
1089 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1090
1091 if (!fc_rport)
1092 return;
1093
1094 fc_rport->maxframe_size =
1095 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1096 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1097
1098 itnim_data = fc_rport->dd_data;
1099 itnim_data->itnim = itnim;
1100
1101 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1102
1103 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1104 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1105
1106 if ((fc_rport->scsi_target_id != -1)
1107 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1108 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1109
1110 itnim->channel = fc_rport->channel;
1111
1112 return;
1113 }
1114
1115 /*
1116 * Work queue handler using FC transport service
1117 * Context: kernel
1118 */
1119 static void
bfad_im_itnim_work_handler(struct work_struct * work)1120 bfad_im_itnim_work_handler(struct work_struct *work)
1121 {
1122 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1123 itnim_work);
1124 struct bfad_im_s *im = itnim->im;
1125 struct bfad_s *bfad = im->bfad;
1126 struct bfad_im_port_s *im_port;
1127 unsigned long flags;
1128 struct fc_rport *fc_rport;
1129 wwn_t wwpn;
1130 u32 fcid;
1131 char wwpn_str[32], fcid_str[16];
1132
1133 spin_lock_irqsave(&bfad->bfad_lock, flags);
1134 im_port = itnim->im_port;
1135 bfa_trc(bfad, itnim->state);
1136 switch (itnim->state) {
1137 case ITNIM_STATE_ONLINE:
1138 if (!itnim->fc_rport) {
1139 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1140 bfad_im_fc_rport_add(im_port, itnim);
1141 spin_lock_irqsave(&bfad->bfad_lock, flags);
1142 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1143 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1144 wwn2str(wwpn_str, wwpn);
1145 fcid2str(fcid_str, fcid);
1146 list_add_tail(&itnim->list_entry,
1147 &im_port->itnim_mapped_list);
1148 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1149 "ITNIM ONLINE Target: %d:0:%d "
1150 "FCID: %s WWPN: %s\n",
1151 im_port->shost->host_no,
1152 itnim->scsi_tgt_id,
1153 fcid_str, wwpn_str);
1154 } else {
1155 printk(KERN_WARNING
1156 "%s: itnim %llx is already in online state\n",
1157 __func__,
1158 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1159 }
1160
1161 break;
1162 case ITNIM_STATE_OFFLINE_PENDING:
1163 itnim->state = ITNIM_STATE_OFFLINE;
1164 if (itnim->fc_rport) {
1165 fc_rport = itnim->fc_rport;
1166 ((struct bfad_itnim_data_s *)
1167 fc_rport->dd_data)->itnim = NULL;
1168 itnim->fc_rport = NULL;
1169 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1170 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1171 fc_rport->dev_loss_tmo =
1172 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1173 fc_remote_port_delete(fc_rport);
1174 spin_lock_irqsave(&bfad->bfad_lock, flags);
1175 }
1176 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1177 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1178 wwn2str(wwpn_str, wwpn);
1179 fcid2str(fcid_str, fcid);
1180 list_del(&itnim->list_entry);
1181 BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1182 "ITNIM OFFLINE Target: %d:0:%d "
1183 "FCID: %s WWPN: %s\n",
1184 im_port->shost->host_no,
1185 itnim->scsi_tgt_id,
1186 fcid_str, wwpn_str);
1187 }
1188 break;
1189 case ITNIM_STATE_FREE:
1190 if (itnim->fc_rport) {
1191 fc_rport = itnim->fc_rport;
1192 ((struct bfad_itnim_data_s *)
1193 fc_rport->dd_data)->itnim = NULL;
1194 itnim->fc_rport = NULL;
1195 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1196 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1197 fc_rport->dev_loss_tmo =
1198 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1199 fc_remote_port_delete(fc_rport);
1200 spin_lock_irqsave(&bfad->bfad_lock, flags);
1201 }
1202 list_del(&itnim->list_entry);
1203 }
1204
1205 kfree(itnim);
1206 break;
1207 default:
1208 WARN_ON(1);
1209 break;
1210 }
1211
1212 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1213 }
1214
1215 /*
1216 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1217 */
1218 static int
bfad_im_queuecommand_lck(struct scsi_cmnd * cmnd,void (* done)(struct scsi_cmnd *))1219 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1220 {
1221 struct bfad_im_port_s *im_port =
1222 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1223 struct bfad_s *bfad = im_port->bfad;
1224 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1225 struct bfad_itnim_s *itnim;
1226 struct bfa_ioim_s *hal_io;
1227 unsigned long flags;
1228 int rc;
1229 int sg_cnt = 0;
1230 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1231
1232 rc = fc_remote_port_chkready(rport);
1233 if (rc) {
1234 cmnd->result = rc;
1235 done(cmnd);
1236 return 0;
1237 }
1238
1239 if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1240 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1241 cmnd->result = DID_NO_CONNECT << 16;
1242 else
1243 cmnd->result = DID_REQUEUE << 16;
1244 done(cmnd);
1245 return 0;
1246 }
1247
1248 sg_cnt = scsi_dma_map(cmnd);
1249 if (sg_cnt < 0)
1250 return SCSI_MLQUEUE_HOST_BUSY;
1251
1252 cmnd->scsi_done = done;
1253
1254 spin_lock_irqsave(&bfad->bfad_lock, flags);
1255 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1256 printk(KERN_WARNING
1257 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1258 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1259 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1260 goto out_fail_cmd;
1261 }
1262
1263
1264 itnim = itnim_data->itnim;
1265 if (!itnim) {
1266 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1267 goto out_fail_cmd;
1268 }
1269
1270 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1271 itnim->bfa_itnim, sg_cnt);
1272 if (!hal_io) {
1273 printk(KERN_WARNING "hal_io failure\n");
1274 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1275 scsi_dma_unmap(cmnd);
1276 return SCSI_MLQUEUE_HOST_BUSY;
1277 }
1278
1279 cmnd->host_scribble = (char *)hal_io;
1280 bfa_ioim_start(hal_io);
1281 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1282
1283 return 0;
1284
1285 out_fail_cmd:
1286 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1287 scsi_dma_unmap(cmnd);
1288 if (done)
1289 done(cmnd);
1290
1291 return 0;
1292 }
1293
DEF_SCSI_QCMD(bfad_im_queuecommand)1294 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1295
1296 void
1297 bfad_rport_online_wait(struct bfad_s *bfad)
1298 {
1299 int i;
1300 int rport_delay = 10;
1301
1302 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1303 && i < bfa_linkup_delay; i++) {
1304 set_current_state(TASK_UNINTERRUPTIBLE);
1305 schedule_timeout(HZ);
1306 }
1307
1308 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1309 rport_delay = rport_delay < bfa_linkup_delay ?
1310 rport_delay : bfa_linkup_delay;
1311 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1312 && i < rport_delay; i++) {
1313 set_current_state(TASK_UNINTERRUPTIBLE);
1314 schedule_timeout(HZ);
1315 }
1316
1317 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1318 set_current_state(TASK_UNINTERRUPTIBLE);
1319 schedule_timeout(rport_delay * HZ);
1320 }
1321 }
1322 }
1323
1324 int
bfad_get_linkup_delay(struct bfad_s * bfad)1325 bfad_get_linkup_delay(struct bfad_s *bfad)
1326 {
1327 u8 nwwns = 0;
1328 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX];
1329 int linkup_delay;
1330
1331 /*
1332 * Querying for the boot target port wwns
1333 * -- read from boot information in flash.
1334 * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1335 * else => local boot machine set linkup_delay = 0
1336 */
1337
1338 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1339
1340 if (nwwns > 0)
1341 /* If Boot over SAN set linkup_delay = 30sec */
1342 linkup_delay = 30;
1343 else
1344 /* If local boot; no linkup_delay */
1345 linkup_delay = 0;
1346
1347 return linkup_delay;
1348 }
1349