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7725ccfd JH |
1 | /* |
2 | * Copyright (c) 2005-2009 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 "bfad_trcmod.h" | |
25 | #include "bfa_cb_ioim_macros.h" | |
26 | #include <fcb/bfa_fcb_fcpim.h> | |
27 | ||
28 | BFA_TRC_FILE(LDRV, IM); | |
29 | ||
30 | DEFINE_IDR(bfad_im_port_index); | |
31 | struct scsi_transport_template *bfad_im_scsi_transport_template; | |
32 | static void bfad_im_itnim_work_handler(struct work_struct *work); | |
33 | static int bfad_im_queuecommand(struct scsi_cmnd *cmnd, | |
34 | void (*done)(struct scsi_cmnd *)); | |
35 | static int bfad_im_slave_alloc(struct scsi_device *sdev); | |
36 | ||
37 | void | |
38 | bfa_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 | ||
47 | switch (io_status) { | |
48 | case BFI_IOIM_STS_OK: | |
49 | bfa_trc(bfad, scsi_status); | |
50 | cmnd->result = ScsiResult(DID_OK, 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 | if (residue > 0) | |
60 | scsi_set_resid(cmnd, residue); | |
61 | break; | |
62 | ||
63 | case BFI_IOIM_STS_ABORTED: | |
64 | case BFI_IOIM_STS_TIMEDOUT: | |
65 | case BFI_IOIM_STS_PATHTOV: | |
66 | default: | |
67 | cmnd->result = ScsiResult(DID_ERROR, 0); | |
68 | } | |
69 | ||
70 | /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ | |
71 | if (cmnd->device->host != NULL) | |
72 | scsi_dma_unmap(cmnd); | |
73 | ||
74 | cmnd->host_scribble = NULL; | |
75 | bfa_trc(bfad, cmnd->result); | |
76 | ||
77 | itnim_data = cmnd->device->hostdata; | |
78 | if (itnim_data) { | |
79 | itnim = itnim_data->itnim; | |
80 | if (!cmnd->result && itnim && | |
81 | (bfa_lun_queue_depth > cmnd->device->queue_depth)) { | |
82 | /* Queue depth adjustment for good status completion */ | |
83 | bfad_os_ramp_up_qdepth(itnim, cmnd->device); | |
84 | } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) { | |
85 | /* qfull handling */ | |
86 | bfad_os_handle_qfull(itnim, cmnd->device); | |
87 | } | |
88 | } | |
89 | ||
90 | cmnd->scsi_done(cmnd); | |
91 | } | |
92 | ||
93 | void | |
94 | bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio) | |
95 | { | |
96 | struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; | |
97 | struct bfad_itnim_data_s *itnim_data; | |
98 | struct bfad_itnim_s *itnim; | |
99 | ||
100 | cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD); | |
101 | ||
102 | /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ | |
103 | if (cmnd->device->host != NULL) | |
104 | scsi_dma_unmap(cmnd); | |
105 | ||
106 | cmnd->host_scribble = NULL; | |
107 | ||
108 | /* Queue depth adjustment */ | |
109 | if (bfa_lun_queue_depth > cmnd->device->queue_depth) { | |
110 | itnim_data = cmnd->device->hostdata; | |
111 | if (itnim_data) { | |
112 | itnim = itnim_data->itnim; | |
113 | if (itnim) | |
114 | bfad_os_ramp_up_qdepth(itnim, cmnd->device); | |
115 | } | |
116 | } | |
117 | ||
118 | cmnd->scsi_done(cmnd); | |
119 | } | |
120 | ||
121 | void | |
122 | bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio) | |
123 | { | |
124 | struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; | |
125 | struct bfad_s *bfad = drv; | |
126 | ||
127 | cmnd->result = ScsiResult(DID_ERROR, 0); | |
128 | ||
129 | /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ | |
130 | if (cmnd->device->host != NULL) | |
131 | scsi_dma_unmap(cmnd); | |
132 | ||
133 | bfa_trc(bfad, cmnd->result); | |
134 | cmnd->host_scribble = NULL; | |
135 | } | |
136 | ||
137 | void | |
138 | bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk, | |
139 | enum bfi_tskim_status tsk_status) | |
140 | { | |
141 | struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk; | |
142 | wait_queue_head_t *wq; | |
143 | ||
144 | cmnd->SCp.Status |= tsk_status << 1; | |
145 | set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status); | |
146 | wq = (wait_queue_head_t *) cmnd->SCp.ptr; | |
147 | cmnd->SCp.ptr = NULL; | |
148 | ||
149 | if (wq) | |
150 | wake_up(wq); | |
151 | } | |
152 | ||
153 | void | |
154 | bfa_cb_ioim_resfree(void *drv) | |
155 | { | |
156 | } | |
157 | ||
158 | /** | |
159 | * Scsi_Host_template SCSI host template | |
160 | */ | |
161 | /** | |
162 | * Scsi_Host template entry, returns BFAD PCI info. | |
163 | */ | |
164 | static const char * | |
165 | bfad_im_info(struct Scsi_Host *shost) | |
166 | { | |
167 | static char bfa_buf[256]; | |
168 | struct bfad_im_port_s *im_port = | |
169 | (struct bfad_im_port_s *) shost->hostdata[0]; | |
170 | struct bfa_ioc_attr_s ioc_attr; | |
171 | struct bfad_s *bfad = im_port->bfad; | |
172 | ||
173 | memset(&ioc_attr, 0, sizeof(ioc_attr)); | |
174 | bfa_get_attr(&bfad->bfa, &ioc_attr); | |
175 | ||
176 | memset(bfa_buf, 0, sizeof(bfa_buf)); | |
177 | snprintf(bfa_buf, sizeof(bfa_buf), | |
178 | "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s", | |
179 | ioc_attr.adapter_attr.model, bfad->pci_name, | |
180 | BFAD_DRIVER_VERSION); | |
181 | return bfa_buf; | |
182 | } | |
183 | ||
184 | /** | |
185 | * Scsi_Host template entry, aborts the specified SCSI command. | |
186 | * | |
187 | * Returns: SUCCESS or FAILED. | |
188 | */ | |
189 | static int | |
190 | bfad_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, retrun 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(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT, | |
215 | im_port->shost->host_no, cmnd, hal_io->iotag); | |
216 | bfa_ioim_abort(hal_io); | |
217 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
218 | ||
219 | /* Need to wait until the command get aborted */ | |
220 | timeout = 10; | |
221 | while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) { | |
222 | set_current_state(TASK_UNINTERRUPTIBLE); | |
223 | schedule_timeout(timeout); | |
224 | if (timeout < 4 * HZ) | |
225 | timeout *= 2; | |
226 | } | |
227 | ||
228 | cmnd->scsi_done(cmnd); | |
229 | bfa_trc(bfad, hal_io->iotag); | |
230 | bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT_COMP, | |
231 | im_port->shost->host_no, cmnd, hal_io->iotag); | |
232 | return SUCCESS; | |
233 | out: | |
234 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
235 | return rc; | |
236 | } | |
237 | ||
238 | static bfa_status_t | |
239 | bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd, | |
240 | struct bfad_itnim_s *itnim) | |
241 | { | |
242 | struct bfa_tskim_s *tskim; | |
243 | struct bfa_itnim_s *bfa_itnim; | |
244 | bfa_status_t rc = BFA_STATUS_OK; | |
245 | ||
246 | bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); | |
247 | tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); | |
248 | if (!tskim) { | |
249 | BFA_DEV_PRINTF(bfad, BFA_ERR, | |
250 | "target reset, fail to allocate tskim\n"); | |
251 | rc = BFA_STATUS_FAILED; | |
252 | goto out; | |
253 | } | |
254 | ||
255 | /* | |
256 | * Set host_scribble to NULL to avoid aborting a task command if | |
257 | * happens. | |
258 | */ | |
259 | cmnd->host_scribble = NULL; | |
260 | cmnd->SCp.Status = 0; | |
261 | bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); | |
262 | bfa_tskim_start(tskim, bfa_itnim, (lun_t)0, | |
263 | FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO); | |
264 | out: | |
265 | return rc; | |
266 | } | |
267 | ||
268 | /** | |
269 | * Scsi_Host template entry, resets a LUN and abort its all commands. | |
270 | * | |
271 | * Returns: SUCCESS or FAILED. | |
272 | * | |
273 | */ | |
274 | static int | |
275 | bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd) | |
276 | { | |
277 | struct Scsi_Host *shost = cmnd->device->host; | |
278 | struct bfad_im_port_s *im_port = | |
279 | (struct bfad_im_port_s *) shost->hostdata[0]; | |
280 | struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; | |
281 | struct bfad_s *bfad = im_port->bfad; | |
282 | struct bfa_tskim_s *tskim; | |
283 | struct bfad_itnim_s *itnim; | |
284 | struct bfa_itnim_s *bfa_itnim; | |
285 | DECLARE_WAIT_QUEUE_HEAD(wq); | |
286 | int rc = SUCCESS; | |
287 | unsigned long flags; | |
288 | enum bfi_tskim_status task_status; | |
289 | ||
290 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
291 | itnim = itnim_data->itnim; | |
292 | if (!itnim) { | |
293 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
294 | rc = FAILED; | |
295 | goto out; | |
296 | } | |
297 | ||
298 | tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); | |
299 | if (!tskim) { | |
300 | BFA_DEV_PRINTF(bfad, BFA_ERR, | |
301 | "LUN reset, fail to allocate tskim"); | |
302 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
303 | rc = FAILED; | |
304 | goto out; | |
305 | } | |
306 | ||
307 | /** | |
308 | * Set host_scribble to NULL to avoid aborting a task command | |
309 | * if happens. | |
310 | */ | |
311 | cmnd->host_scribble = NULL; | |
312 | cmnd->SCp.ptr = (char *)&wq; | |
313 | cmnd->SCp.Status = 0; | |
314 | bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); | |
315 | bfa_tskim_start(tskim, bfa_itnim, | |
316 | bfad_int_to_lun(cmnd->device->lun), | |
317 | FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO); | |
318 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
319 | ||
320 | wait_event(wq, test_bit(IO_DONE_BIT, | |
321 | (unsigned long *)&cmnd->SCp.Status)); | |
322 | ||
323 | task_status = cmnd->SCp.Status >> 1; | |
324 | if (task_status != BFI_TSKIM_STS_OK) { | |
325 | BFA_DEV_PRINTF(bfad, BFA_ERR, "LUN reset failure, status: %d\n", | |
326 | task_status); | |
327 | rc = FAILED; | |
328 | } | |
329 | ||
330 | out: | |
331 | return rc; | |
332 | } | |
333 | ||
334 | /** | |
335 | * Scsi_Host template entry, resets the bus and abort all commands. | |
336 | */ | |
337 | static int | |
338 | bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd) | |
339 | { | |
340 | struct Scsi_Host *shost = cmnd->device->host; | |
341 | struct bfad_im_port_s *im_port = | |
342 | (struct bfad_im_port_s *) shost->hostdata[0]; | |
343 | struct bfad_s *bfad = im_port->bfad; | |
344 | struct bfad_itnim_s *itnim; | |
345 | unsigned long flags; | |
346 | u32 i, rc, err_cnt = 0; | |
347 | DECLARE_WAIT_QUEUE_HEAD(wq); | |
348 | enum bfi_tskim_status task_status; | |
349 | ||
350 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
351 | for (i = 0; i < MAX_FCP_TARGET; i++) { | |
352 | itnim = bfad_os_get_itnim(im_port, i); | |
353 | if (itnim) { | |
354 | cmnd->SCp.ptr = (char *)&wq; | |
355 | rc = bfad_im_target_reset_send(bfad, cmnd, itnim); | |
356 | if (rc != BFA_STATUS_OK) { | |
357 | err_cnt++; | |
358 | continue; | |
359 | } | |
360 | ||
361 | /* wait target reset to complete */ | |
362 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
363 | wait_event(wq, test_bit(IO_DONE_BIT, | |
364 | (unsigned long *)&cmnd->SCp.Status)); | |
365 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
366 | ||
367 | task_status = cmnd->SCp.Status >> 1; | |
368 | if (task_status != BFI_TSKIM_STS_OK) { | |
369 | BFA_DEV_PRINTF(bfad, BFA_ERR, | |
370 | "target reset failure," | |
371 | " status: %d\n", task_status); | |
372 | err_cnt++; | |
373 | } | |
374 | } | |
375 | } | |
376 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
377 | ||
378 | if (err_cnt) | |
379 | return FAILED; | |
380 | ||
381 | return SUCCESS; | |
382 | } | |
383 | ||
384 | /** | |
385 | * Scsi_Host template entry slave_destroy. | |
386 | */ | |
387 | static void | |
388 | bfad_im_slave_destroy(struct scsi_device *sdev) | |
389 | { | |
390 | sdev->hostdata = NULL; | |
391 | return; | |
392 | } | |
393 | ||
394 | /** | |
395 | * BFA FCS itnim callbacks | |
396 | */ | |
397 | ||
398 | /** | |
399 | * BFA FCS itnim alloc callback, after successful PRLI | |
400 | * Context: Interrupt | |
401 | */ | |
402 | void | |
403 | bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim, | |
404 | struct bfad_itnim_s **itnim_drv) | |
405 | { | |
406 | *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC); | |
407 | if (*itnim_drv == NULL) | |
408 | return; | |
409 | ||
410 | (*itnim_drv)->im = bfad->im; | |
411 | *itnim = &(*itnim_drv)->fcs_itnim; | |
412 | (*itnim_drv)->state = ITNIM_STATE_NONE; | |
413 | ||
414 | /* | |
415 | * Initiaze the itnim_work | |
416 | */ | |
417 | INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler); | |
418 | bfad->bfad_flags |= BFAD_RPORT_ONLINE; | |
419 | } | |
420 | ||
421 | /** | |
422 | * BFA FCS itnim free callback. | |
423 | * Context: Interrupt. bfad_lock is held | |
424 | */ | |
425 | void | |
426 | bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv) | |
427 | { | |
428 | struct bfad_port_s *port; | |
429 | wwn_t wwpn; | |
430 | u32 fcid; | |
431 | char wwpn_str[32], fcid_str[16]; | |
432 | ||
433 | /* online to free state transtion should not happen */ | |
434 | bfa_assert(itnim_drv->state != ITNIM_STATE_ONLINE); | |
435 | ||
436 | itnim_drv->queue_work = 1; | |
437 | /* offline request is not yet done, use the same request to free */ | |
438 | if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING) | |
439 | itnim_drv->queue_work = 0; | |
440 | ||
441 | itnim_drv->state = ITNIM_STATE_FREE; | |
442 | port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); | |
443 | itnim_drv->im_port = port->im_port; | |
444 | wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim); | |
445 | fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim); | |
446 | wwn2str(wwpn_str, wwpn); | |
447 | fcid2str(fcid_str, fcid); | |
448 | bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_FREE, | |
449 | port->im_port->shost->host_no, | |
450 | fcid_str, wwpn_str); | |
451 | bfad_os_itnim_process(itnim_drv); | |
452 | } | |
453 | ||
454 | /** | |
455 | * BFA FCS itnim online callback. | |
456 | * Context: Interrupt. bfad_lock is held | |
457 | */ | |
458 | void | |
459 | bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv) | |
460 | { | |
461 | struct bfad_port_s *port; | |
462 | ||
463 | itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim); | |
464 | port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); | |
465 | itnim_drv->state = ITNIM_STATE_ONLINE; | |
466 | itnim_drv->queue_work = 1; | |
467 | itnim_drv->im_port = port->im_port; | |
468 | bfad_os_itnim_process(itnim_drv); | |
469 | } | |
470 | ||
471 | /** | |
472 | * BFA FCS itnim offline callback. | |
473 | * Context: Interrupt. bfad_lock is held | |
474 | */ | |
475 | void | |
476 | bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv) | |
477 | { | |
478 | struct bfad_port_s *port; | |
479 | struct bfad_s *bfad; | |
480 | ||
481 | port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); | |
482 | bfad = port->bfad; | |
483 | if ((bfad->pport.flags & BFAD_PORT_DELETE) || | |
484 | (port->flags & BFAD_PORT_DELETE)) { | |
485 | itnim_drv->state = ITNIM_STATE_OFFLINE; | |
486 | return; | |
487 | } | |
488 | itnim_drv->im_port = port->im_port; | |
489 | itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING; | |
490 | itnim_drv->queue_work = 1; | |
491 | bfad_os_itnim_process(itnim_drv); | |
492 | } | |
493 | ||
494 | /** | |
495 | * BFA FCS itnim timeout callback. | |
496 | * Context: Interrupt. bfad_lock is held | |
497 | */ | |
498 | void bfa_fcb_itnim_tov(struct bfad_itnim_s *itnim) | |
499 | { | |
500 | itnim->state = ITNIM_STATE_TIMEOUT; | |
501 | } | |
502 | ||
503 | /** | |
504 | * Path TOV processing begin notification -- dummy for linux | |
505 | */ | |
506 | void | |
507 | bfa_fcb_itnim_tov_begin(struct bfad_itnim_s *itnim) | |
508 | { | |
509 | } | |
510 | ||
511 | ||
512 | ||
513 | /** | |
514 | * Allocate a Scsi_Host for a port. | |
515 | */ | |
516 | int | |
517 | bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port) | |
518 | { | |
519 | int error = 1; | |
520 | ||
521 | if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) { | |
522 | printk(KERN_WARNING "idr_pre_get failure\n"); | |
523 | goto out; | |
524 | } | |
525 | ||
526 | error = idr_get_new(&bfad_im_port_index, im_port, | |
527 | &im_port->idr_id); | |
528 | if (error) { | |
529 | printk(KERN_WARNING "idr_get_new failure\n"); | |
530 | goto out; | |
531 | } | |
532 | ||
533 | im_port->shost = bfad_os_scsi_host_alloc(im_port, bfad); | |
534 | if (!im_port->shost) { | |
535 | error = 1; | |
536 | goto out_free_idr; | |
537 | } | |
538 | ||
539 | im_port->shost->hostdata[0] = (unsigned long)im_port; | |
540 | im_port->shost->unique_id = im_port->idr_id; | |
541 | im_port->shost->this_id = -1; | |
542 | im_port->shost->max_id = MAX_FCP_TARGET; | |
543 | im_port->shost->max_lun = MAX_FCP_LUN; | |
544 | im_port->shost->max_cmd_len = 16; | |
545 | im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth; | |
546 | im_port->shost->transportt = bfad_im_scsi_transport_template; | |
547 | ||
548 | error = bfad_os_scsi_add_host(im_port->shost, im_port, bfad); | |
549 | if (error) { | |
550 | printk(KERN_WARNING "bfad_os_scsi_add_host failure %d\n", | |
551 | error); | |
552 | goto out_fc_rel; | |
553 | } | |
554 | ||
555 | /* setup host fixed attribute if the lk supports */ | |
556 | bfad_os_fc_host_init(im_port); | |
557 | ||
558 | return 0; | |
559 | ||
560 | out_fc_rel: | |
561 | scsi_host_put(im_port->shost); | |
562 | out_free_idr: | |
563 | idr_remove(&bfad_im_port_index, im_port->idr_id); | |
564 | out: | |
565 | return error; | |
566 | } | |
567 | ||
568 | void | |
569 | bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) | |
570 | { | |
571 | unsigned long flags; | |
572 | ||
573 | bfa_trc(bfad, bfad->inst_no); | |
574 | bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE, | |
575 | im_port->shost->host_no); | |
576 | ||
577 | fc_remove_host(im_port->shost); | |
578 | ||
579 | scsi_remove_host(im_port->shost); | |
580 | scsi_host_put(im_port->shost); | |
581 | ||
582 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
583 | idr_remove(&bfad_im_port_index, im_port->idr_id); | |
584 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
585 | } | |
586 | ||
587 | static void | |
588 | bfad_im_port_delete_handler(struct work_struct *work) | |
589 | { | |
590 | struct bfad_im_port_s *im_port = | |
591 | container_of(work, struct bfad_im_port_s, port_delete_work); | |
592 | ||
593 | bfad_im_scsi_host_free(im_port->bfad, im_port); | |
594 | bfad_im_port_clean(im_port); | |
595 | kfree(im_port); | |
596 | } | |
597 | ||
598 | bfa_status_t | |
599 | bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port) | |
600 | { | |
601 | int rc = BFA_STATUS_OK; | |
602 | struct bfad_im_port_s *im_port; | |
603 | ||
604 | im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC); | |
605 | if (im_port == NULL) { | |
606 | rc = BFA_STATUS_ENOMEM; | |
607 | goto ext; | |
608 | } | |
609 | port->im_port = im_port; | |
610 | im_port->port = port; | |
611 | im_port->bfad = bfad; | |
612 | ||
613 | INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler); | |
614 | INIT_LIST_HEAD(&im_port->itnim_mapped_list); | |
615 | INIT_LIST_HEAD(&im_port->binding_list); | |
616 | ||
617 | ext: | |
618 | return rc; | |
619 | } | |
620 | ||
621 | void | |
622 | bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port) | |
623 | { | |
624 | struct bfad_im_port_s *im_port = port->im_port; | |
625 | ||
626 | queue_work(bfad->im->drv_workq, | |
627 | &im_port->port_delete_work); | |
628 | } | |
629 | ||
630 | void | |
631 | bfad_im_port_clean(struct bfad_im_port_s *im_port) | |
632 | { | |
633 | struct bfad_fcp_binding *bp, *bp_new; | |
634 | unsigned long flags; | |
635 | struct bfad_s *bfad = im_port->bfad; | |
636 | ||
637 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
638 | list_for_each_entry_safe(bp, bp_new, &im_port->binding_list, | |
639 | list_entry) { | |
640 | list_del(&bp->list_entry); | |
641 | kfree(bp); | |
642 | } | |
643 | ||
644 | /* the itnim_mapped_list must be empty at this time */ | |
645 | bfa_assert(list_empty(&im_port->itnim_mapped_list)); | |
646 | ||
647 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
648 | } | |
649 | ||
650 | void | |
651 | bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port) | |
652 | { | |
653 | } | |
654 | ||
655 | void | |
656 | bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port) | |
657 | { | |
658 | } | |
659 | ||
660 | bfa_status_t | |
661 | bfad_im_probe(struct bfad_s *bfad) | |
662 | { | |
663 | struct bfad_im_s *im; | |
664 | bfa_status_t rc = BFA_STATUS_OK; | |
665 | ||
666 | im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL); | |
667 | if (im == NULL) { | |
668 | rc = BFA_STATUS_ENOMEM; | |
669 | goto ext; | |
670 | } | |
671 | ||
672 | bfad->im = im; | |
673 | im->bfad = bfad; | |
674 | ||
675 | if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) { | |
676 | kfree(im); | |
677 | rc = BFA_STATUS_FAILED; | |
678 | } | |
679 | ||
680 | ext: | |
681 | return rc; | |
682 | } | |
683 | ||
684 | void | |
685 | bfad_im_probe_undo(struct bfad_s *bfad) | |
686 | { | |
687 | if (bfad->im) { | |
688 | bfad_os_destroy_workq(bfad->im); | |
689 | kfree(bfad->im); | |
690 | bfad->im = NULL; | |
691 | } | |
692 | } | |
693 | ||
694 | ||
695 | ||
696 | ||
697 | int | |
698 | bfad_os_scsi_add_host(struct Scsi_Host *shost, struct bfad_im_port_s *im_port, | |
699 | struct bfad_s *bfad) | |
700 | { | |
701 | struct device *dev; | |
702 | ||
703 | if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) | |
704 | dev = &bfad->pcidev->dev; | |
705 | else | |
706 | dev = &bfad->pport.im_port->shost->shost_gendev; | |
707 | ||
708 | return scsi_add_host(shost, dev); | |
709 | } | |
710 | ||
711 | struct Scsi_Host * | |
712 | bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad) | |
713 | { | |
714 | struct scsi_host_template *sht; | |
715 | ||
716 | if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) | |
717 | sht = &bfad_im_scsi_host_template; | |
718 | else | |
719 | sht = &bfad_im_vport_template; | |
720 | ||
721 | sht->sg_tablesize = bfad->cfg_data.io_max_sge; | |
722 | ||
723 | return scsi_host_alloc(sht, sizeof(unsigned long)); | |
724 | } | |
725 | ||
726 | void | |
727 | bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) | |
728 | { | |
729 | flush_workqueue(bfad->im->drv_workq); | |
730 | bfad_im_scsi_host_free(im_port->bfad, im_port); | |
731 | bfad_im_port_clean(im_port); | |
732 | kfree(im_port); | |
733 | } | |
734 | ||
735 | void | |
736 | bfad_os_destroy_workq(struct bfad_im_s *im) | |
737 | { | |
738 | if (im && im->drv_workq) { | |
739 | destroy_workqueue(im->drv_workq); | |
740 | im->drv_workq = NULL; | |
741 | } | |
742 | } | |
743 | ||
744 | bfa_status_t | |
745 | bfad_os_thread_workq(struct bfad_s *bfad) | |
746 | { | |
747 | struct bfad_im_s *im = bfad->im; | |
748 | ||
749 | bfa_trc(bfad, 0); | |
750 | snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d", | |
751 | bfad->inst_no); | |
752 | im->drv_workq = create_singlethread_workqueue(im->drv_workq_name); | |
753 | if (!im->drv_workq) | |
754 | return BFA_STATUS_FAILED; | |
755 | ||
756 | return BFA_STATUS_OK; | |
757 | } | |
758 | ||
759 | /** | |
760 | * Scsi_Host template entry. | |
761 | * | |
762 | * Description: | |
763 | * OS entry point to adjust the queue_depths on a per-device basis. | |
764 | * Called once per device during the bus scan. | |
765 | * Return non-zero if fails. | |
766 | */ | |
767 | static int | |
768 | bfad_im_slave_configure(struct scsi_device *sdev) | |
769 | { | |
770 | if (sdev->tagged_supported) | |
771 | scsi_activate_tcq(sdev, bfa_lun_queue_depth); | |
772 | else | |
773 | scsi_deactivate_tcq(sdev, bfa_lun_queue_depth); | |
774 | ||
775 | return 0; | |
776 | } | |
777 | ||
778 | struct scsi_host_template bfad_im_scsi_host_template = { | |
779 | .module = THIS_MODULE, | |
780 | .name = BFAD_DRIVER_NAME, | |
781 | .info = bfad_im_info, | |
782 | .queuecommand = bfad_im_queuecommand, | |
783 | .eh_abort_handler = bfad_im_abort_handler, | |
784 | .eh_device_reset_handler = bfad_im_reset_lun_handler, | |
785 | .eh_bus_reset_handler = bfad_im_reset_bus_handler, | |
786 | ||
787 | .slave_alloc = bfad_im_slave_alloc, | |
788 | .slave_configure = bfad_im_slave_configure, | |
789 | .slave_destroy = bfad_im_slave_destroy, | |
790 | ||
791 | .this_id = -1, | |
792 | .sg_tablesize = BFAD_IO_MAX_SGE, | |
793 | .cmd_per_lun = 3, | |
794 | .use_clustering = ENABLE_CLUSTERING, | |
795 | .shost_attrs = bfad_im_host_attrs, | |
796 | .max_sectors = 0xFFFF, | |
797 | }; | |
798 | ||
799 | struct scsi_host_template bfad_im_vport_template = { | |
800 | .module = THIS_MODULE, | |
801 | .name = BFAD_DRIVER_NAME, | |
802 | .info = bfad_im_info, | |
803 | .queuecommand = bfad_im_queuecommand, | |
804 | .eh_abort_handler = bfad_im_abort_handler, | |
805 | .eh_device_reset_handler = bfad_im_reset_lun_handler, | |
806 | .eh_bus_reset_handler = bfad_im_reset_bus_handler, | |
807 | ||
808 | .slave_alloc = bfad_im_slave_alloc, | |
809 | .slave_configure = bfad_im_slave_configure, | |
810 | .slave_destroy = bfad_im_slave_destroy, | |
811 | ||
812 | .this_id = -1, | |
813 | .sg_tablesize = BFAD_IO_MAX_SGE, | |
814 | .cmd_per_lun = 3, | |
815 | .use_clustering = ENABLE_CLUSTERING, | |
816 | .shost_attrs = bfad_im_vport_attrs, | |
817 | .max_sectors = 0xFFFF, | |
818 | }; | |
819 | ||
820 | void | |
821 | bfad_im_probe_post(struct bfad_im_s *im) | |
822 | { | |
823 | flush_workqueue(im->drv_workq); | |
824 | } | |
825 | ||
826 | bfa_status_t | |
827 | bfad_im_module_init(void) | |
828 | { | |
829 | bfad_im_scsi_transport_template = | |
830 | fc_attach_transport(&bfad_im_fc_function_template); | |
831 | if (!bfad_im_scsi_transport_template) | |
832 | return BFA_STATUS_ENOMEM; | |
833 | ||
834 | return BFA_STATUS_OK; | |
835 | } | |
836 | ||
837 | void | |
838 | bfad_im_module_exit(void) | |
839 | { | |
840 | if (bfad_im_scsi_transport_template) | |
841 | fc_release_transport(bfad_im_scsi_transport_template); | |
842 | } | |
843 | ||
844 | void | |
845 | bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv) | |
846 | { | |
847 | struct bfad_im_s *im = itnim_drv->im; | |
848 | ||
849 | if (itnim_drv->queue_work) | |
850 | queue_work(im->drv_workq, &itnim_drv->itnim_work); | |
851 | } | |
852 | ||
853 | void | |
854 | bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev) | |
855 | { | |
856 | struct scsi_device *tmp_sdev; | |
857 | ||
858 | if (((jiffies - itnim->last_ramp_up_time) > | |
859 | BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) && | |
860 | ((jiffies - itnim->last_queue_full_time) > | |
861 | BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) { | |
862 | shost_for_each_device(tmp_sdev, sdev->host) { | |
863 | if (bfa_lun_queue_depth > tmp_sdev->queue_depth) { | |
864 | if (tmp_sdev->id != sdev->id) | |
865 | continue; | |
866 | if (tmp_sdev->ordered_tags) | |
867 | scsi_adjust_queue_depth(tmp_sdev, | |
868 | MSG_ORDERED_TAG, | |
869 | tmp_sdev->queue_depth + 1); | |
870 | else | |
871 | scsi_adjust_queue_depth(tmp_sdev, | |
872 | MSG_SIMPLE_TAG, | |
873 | tmp_sdev->queue_depth + 1); | |
874 | ||
875 | itnim->last_ramp_up_time = jiffies; | |
876 | } | |
877 | } | |
878 | } | |
879 | } | |
880 | ||
881 | void | |
882 | bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev) | |
883 | { | |
884 | struct scsi_device *tmp_sdev; | |
885 | ||
886 | itnim->last_queue_full_time = jiffies; | |
887 | ||
888 | shost_for_each_device(tmp_sdev, sdev->host) { | |
889 | if (tmp_sdev->id != sdev->id) | |
890 | continue; | |
891 | scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1); | |
892 | } | |
893 | } | |
894 | ||
895 | ||
896 | ||
897 | ||
898 | struct bfad_itnim_s * | |
899 | bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id) | |
900 | { | |
901 | struct bfad_itnim_s *itnim = NULL; | |
902 | ||
903 | /* Search the mapped list for this target ID */ | |
904 | list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) { | |
905 | if (id == itnim->scsi_tgt_id) | |
906 | return itnim; | |
907 | } | |
908 | ||
909 | return NULL; | |
910 | } | |
911 | ||
912 | /** | |
913 | * Scsi_Host template entry slave_alloc | |
914 | */ | |
915 | static int | |
916 | bfad_im_slave_alloc(struct scsi_device *sdev) | |
917 | { | |
918 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); | |
919 | ||
920 | if (!rport || fc_remote_port_chkready(rport)) | |
921 | return -ENXIO; | |
922 | ||
923 | sdev->hostdata = rport->dd_data; | |
924 | ||
925 | return 0; | |
926 | } | |
927 | ||
928 | void | |
929 | bfad_os_fc_host_init(struct bfad_im_port_s *im_port) | |
930 | { | |
931 | struct Scsi_Host *host = im_port->shost; | |
932 | struct bfad_s *bfad = im_port->bfad; | |
933 | struct bfad_port_s *port = im_port->port; | |
934 | union attr { | |
935 | struct bfa_pport_attr_s pattr; | |
936 | struct bfa_ioc_attr_s ioc_attr; | |
937 | } attr; | |
938 | ||
939 | fc_host_node_name(host) = | |
940 | bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port))); | |
941 | fc_host_port_name(host) = | |
942 | bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port))); | |
943 | ||
944 | fc_host_supported_classes(host) = FC_COS_CLASS3; | |
945 | ||
946 | memset(fc_host_supported_fc4s(host), 0, | |
947 | sizeof(fc_host_supported_fc4s(host))); | |
948 | if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM)) | |
949 | /* For FCP type 0x08 */ | |
950 | fc_host_supported_fc4s(host)[2] = 1; | |
951 | if (bfad_supported_fc4s | BFA_PORT_ROLE_FCP_IPFC) | |
952 | /* For LLC/SNAP type 0x05 */ | |
953 | fc_host_supported_fc4s(host)[3] = 0x20; | |
954 | /* For fibre channel services type 0x20 */ | |
955 | fc_host_supported_fc4s(host)[7] = 1; | |
956 | ||
957 | memset(&attr.ioc_attr, 0, sizeof(attr.ioc_attr)); | |
958 | bfa_get_attr(&bfad->bfa, &attr.ioc_attr); | |
959 | sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s", | |
960 | attr.ioc_attr.adapter_attr.model, | |
961 | attr.ioc_attr.adapter_attr.fw_ver, BFAD_DRIVER_VERSION); | |
962 | ||
963 | fc_host_supported_speeds(host) = 0; | |
964 | fc_host_supported_speeds(host) |= | |
965 | FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT | | |
966 | FC_PORTSPEED_1GBIT; | |
967 | ||
968 | memset(&attr.pattr, 0, sizeof(attr.pattr)); | |
969 | bfa_pport_get_attr(&bfad->bfa, &attr.pattr); | |
970 | fc_host_maxframe_size(host) = attr.pattr.pport_cfg.maxfrsize; | |
971 | } | |
972 | ||
973 | static void | |
974 | bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim) | |
975 | { | |
976 | struct fc_rport_identifiers rport_ids; | |
977 | struct fc_rport *fc_rport; | |
978 | struct bfad_itnim_data_s *itnim_data; | |
979 | ||
980 | rport_ids.node_name = | |
981 | bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim)); | |
982 | rport_ids.port_name = | |
983 | bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim)); | |
984 | rport_ids.port_id = | |
985 | bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim)); | |
986 | rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; | |
987 | ||
988 | itnim->fc_rport = fc_rport = | |
989 | fc_remote_port_add(im_port->shost, 0, &rport_ids); | |
990 | ||
991 | if (!fc_rport) | |
992 | return; | |
993 | ||
994 | fc_rport->maxframe_size = | |
995 | bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim); | |
996 | fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim); | |
997 | ||
998 | itnim_data = fc_rport->dd_data; | |
999 | itnim_data->itnim = itnim; | |
1000 | ||
1001 | rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; | |
1002 | ||
1003 | if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) | |
1004 | fc_remote_port_rolechg(fc_rport, rport_ids.roles); | |
1005 | ||
1006 | if ((fc_rport->scsi_target_id != -1) | |
1007 | && (fc_rport->scsi_target_id < MAX_FCP_TARGET)) | |
1008 | itnim->scsi_tgt_id = fc_rport->scsi_target_id; | |
1009 | ||
1010 | return; | |
1011 | } | |
1012 | ||
1013 | /** | |
1014 | * Work queue handler using FC transport service | |
1015 | * Context: kernel | |
1016 | */ | |
1017 | static void | |
1018 | bfad_im_itnim_work_handler(struct work_struct *work) | |
1019 | { | |
1020 | struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s, | |
1021 | itnim_work); | |
1022 | struct bfad_im_s *im = itnim->im; | |
1023 | struct bfad_s *bfad = im->bfad; | |
1024 | struct bfad_im_port_s *im_port; | |
1025 | unsigned long flags; | |
1026 | struct fc_rport *fc_rport; | |
1027 | wwn_t wwpn; | |
1028 | u32 fcid; | |
1029 | char wwpn_str[32], fcid_str[16]; | |
1030 | ||
1031 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1032 | im_port = itnim->im_port; | |
1033 | bfa_trc(bfad, itnim->state); | |
1034 | switch (itnim->state) { | |
1035 | case ITNIM_STATE_ONLINE: | |
1036 | if (!itnim->fc_rport) { | |
1037 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1038 | bfad_im_fc_rport_add(im_port, itnim); | |
1039 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1040 | wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim); | |
1041 | fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim); | |
1042 | wwn2str(wwpn_str, wwpn); | |
1043 | fcid2str(fcid_str, fcid); | |
1044 | list_add_tail(&itnim->list_entry, | |
1045 | &im_port->itnim_mapped_list); | |
1046 | bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE, | |
1047 | im_port->shost->host_no, | |
1048 | itnim->scsi_tgt_id, | |
1049 | fcid_str, wwpn_str); | |
1050 | } else { | |
1051 | printk(KERN_WARNING | |
1052 | "%s: itnim %llx is already in online state\n", | |
1053 | __FUNCTION__, | |
1054 | bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim)); | |
1055 | } | |
1056 | ||
1057 | break; | |
1058 | case ITNIM_STATE_OFFLINE_PENDING: | |
1059 | itnim->state = ITNIM_STATE_OFFLINE; | |
1060 | if (itnim->fc_rport) { | |
1061 | fc_rport = itnim->fc_rport; | |
1062 | ((struct bfad_itnim_data_s *) | |
1063 | fc_rport->dd_data)->itnim = NULL; | |
1064 | itnim->fc_rport = NULL; | |
1065 | if (!(im_port->port->flags & BFAD_PORT_DELETE)) { | |
1066 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1067 | fc_rport->dev_loss_tmo = | |
1068 | bfa_fcpim_path_tov_get(&bfad->bfa) + 1; | |
1069 | fc_remote_port_delete(fc_rport); | |
1070 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1071 | } | |
1072 | wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim); | |
1073 | fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim); | |
1074 | wwn2str(wwpn_str, wwpn); | |
1075 | fcid2str(fcid_str, fcid); | |
1076 | list_del(&itnim->list_entry); | |
1077 | bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE, | |
1078 | im_port->shost->host_no, | |
1079 | itnim->scsi_tgt_id, | |
1080 | fcid_str, wwpn_str); | |
1081 | } | |
1082 | break; | |
1083 | case ITNIM_STATE_FREE: | |
1084 | if (itnim->fc_rport) { | |
1085 | fc_rport = itnim->fc_rport; | |
1086 | ((struct bfad_itnim_data_s *) | |
1087 | fc_rport->dd_data)->itnim = NULL; | |
1088 | itnim->fc_rport = NULL; | |
1089 | if (!(im_port->port->flags & BFAD_PORT_DELETE)) { | |
1090 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1091 | fc_rport->dev_loss_tmo = | |
1092 | bfa_fcpim_path_tov_get(&bfad->bfa) + 1; | |
1093 | fc_remote_port_delete(fc_rport); | |
1094 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1095 | } | |
1096 | list_del(&itnim->list_entry); | |
1097 | } | |
1098 | ||
1099 | kfree(itnim); | |
1100 | break; | |
1101 | default: | |
1102 | bfa_assert(0); | |
1103 | break; | |
1104 | } | |
1105 | ||
1106 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1107 | } | |
1108 | ||
1109 | /** | |
1110 | * Scsi_Host template entry, queue a SCSI command to the BFAD. | |
1111 | */ | |
1112 | static int | |
1113 | bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
1114 | { | |
1115 | struct bfad_im_port_s *im_port = | |
1116 | (struct bfad_im_port_s *) cmnd->device->host->hostdata[0]; | |
1117 | struct bfad_s *bfad = im_port->bfad; | |
1118 | struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; | |
1119 | struct bfad_itnim_s *itnim; | |
1120 | struct bfa_ioim_s *hal_io; | |
1121 | unsigned long flags; | |
1122 | int rc; | |
1123 | s16 sg_cnt = 0; | |
1124 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
1125 | ||
1126 | rc = fc_remote_port_chkready(rport); | |
1127 | if (rc) { | |
1128 | cmnd->result = rc; | |
1129 | done(cmnd); | |
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | sg_cnt = scsi_dma_map(cmnd); | |
1134 | ||
1135 | if (sg_cnt < 0) | |
1136 | return SCSI_MLQUEUE_HOST_BUSY; | |
1137 | ||
1138 | cmnd->scsi_done = done; | |
1139 | ||
1140 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1141 | if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) { | |
1142 | printk(KERN_WARNING | |
1143 | "bfad%d, queuecommand %p %x failed, BFA stopped\n", | |
1144 | bfad->inst_no, cmnd, cmnd->cmnd[0]); | |
1145 | cmnd->result = ScsiResult(DID_NO_CONNECT, 0); | |
1146 | goto out_fail_cmd; | |
1147 | } | |
1148 | ||
1149 | itnim = itnim_data->itnim; | |
1150 | if (!itnim) { | |
1151 | cmnd->result = ScsiResult(DID_IMM_RETRY, 0); | |
1152 | goto out_fail_cmd; | |
1153 | } | |
1154 | ||
1155 | hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd, | |
1156 | itnim->bfa_itnim, sg_cnt); | |
1157 | if (!hal_io) { | |
1158 | printk(KERN_WARNING "hal_io failure\n"); | |
1159 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1160 | scsi_dma_unmap(cmnd); | |
1161 | return SCSI_MLQUEUE_HOST_BUSY; | |
1162 | } | |
1163 | ||
1164 | cmnd->host_scribble = (char *)hal_io; | |
1165 | bfa_trc_fp(bfad, hal_io->iotag); | |
1166 | bfa_ioim_start(hal_io); | |
1167 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1168 | ||
1169 | return 0; | |
1170 | ||
1171 | out_fail_cmd: | |
1172 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1173 | scsi_dma_unmap(cmnd); | |
1174 | if (done) | |
1175 | done(cmnd); | |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
1180 | void | |
1181 | bfad_os_rport_online_wait(struct bfad_s *bfad) | |
1182 | { | |
1183 | int i; | |
1184 | int rport_delay = 10; | |
1185 | ||
1186 | for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE) | |
1187 | && i < bfa_linkup_delay; i++) | |
1188 | schedule_timeout_uninterruptible(HZ); | |
1189 | ||
1190 | if (bfad->bfad_flags & BFAD_PORT_ONLINE) { | |
1191 | rport_delay = rport_delay < bfa_linkup_delay ? | |
1192 | rport_delay : bfa_linkup_delay; | |
1193 | for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE) | |
1194 | && i < rport_delay; i++) | |
1195 | schedule_timeout_uninterruptible(HZ); | |
1196 | ||
1197 | if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) | |
1198 | schedule_timeout_uninterruptible(rport_delay * HZ); | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | int | |
1203 | bfad_os_get_linkup_delay(struct bfad_s *bfad) | |
1204 | { | |
1205 | ||
1206 | u8 nwwns = 0; | |
1207 | wwn_t *wwns; | |
1208 | int ldelay; | |
1209 | ||
1210 | /* | |
1211 | * Querying for the boot target port wwns | |
1212 | * -- read from boot information in flash. | |
1213 | * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30 | |
1214 | * else => local boot machine set bfa_linkup_delay = 10 | |
1215 | */ | |
1216 | ||
1217 | bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, &wwns); | |
1218 | ||
1219 | if (nwwns > 0) { | |
1220 | /* If boot over SAN; linkup_delay = 30sec */ | |
1221 | ldelay = 30; | |
1222 | } else { | |
1223 | /* If local boot; linkup_delay = 10sec */ | |
1224 | ldelay = 0; | |
1225 | } | |
1226 | ||
1227 | return ldelay; | |
1228 | } | |
1229 | ||
1230 |