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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 | ||
5a0e3ad6 | 22 | #include <linux/slab.h> |
7725ccfd JH |
23 | #include "bfad_drv.h" |
24 | #include "bfad_im.h" | |
25 | #include "bfad_trcmod.h" | |
26 | #include "bfa_cb_ioim_macros.h" | |
27 | #include <fcb/bfa_fcb_fcpim.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; | |
b504293f | 33 | struct scsi_transport_template *bfad_im_scsi_vport_transport_template; |
7725ccfd JH |
34 | static void bfad_im_itnim_work_handler(struct work_struct *work); |
35 | static int bfad_im_queuecommand(struct scsi_cmnd *cmnd, | |
36 | void (*done)(struct scsi_cmnd *)); | |
37 | static int bfad_im_slave_alloc(struct scsi_device *sdev); | |
38 | ||
39 | void | |
40 | bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio, | |
41 | enum bfi_ioim_status io_status, u8 scsi_status, | |
42 | int sns_len, u8 *sns_info, s32 residue) | |
43 | { | |
44 | struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; | |
45 | struct bfad_s *bfad = drv; | |
46 | struct bfad_itnim_data_s *itnim_data; | |
47 | struct bfad_itnim_s *itnim; | |
95aa060d | 48 | u8 host_status = DID_OK; |
7725ccfd JH |
49 | |
50 | switch (io_status) { | |
51 | case BFI_IOIM_STS_OK: | |
52 | bfa_trc(bfad, scsi_status); | |
7725ccfd JH |
53 | scsi_set_resid(cmnd, 0); |
54 | ||
55 | if (sns_len > 0) { | |
56 | bfa_trc(bfad, sns_len); | |
57 | if (sns_len > SCSI_SENSE_BUFFERSIZE) | |
58 | sns_len = SCSI_SENSE_BUFFERSIZE; | |
59 | memcpy(cmnd->sense_buffer, sns_info, sns_len); | |
60 | } | |
95aa060d KG |
61 | if (residue > 0) { |
62 | bfa_trc(bfad, residue); | |
7725ccfd | 63 | scsi_set_resid(cmnd, residue); |
95aa060d KG |
64 | if (!sns_len && (scsi_status == SAM_STAT_GOOD) && |
65 | (scsi_bufflen(cmnd) - residue) < | |
66 | cmnd->underflow) { | |
67 | bfa_trc(bfad, 0); | |
68 | host_status = DID_ERROR; | |
69 | } | |
70 | } | |
71 | cmnd->result = ScsiResult(host_status, scsi_status); | |
72 | ||
7725ccfd JH |
73 | break; |
74 | ||
75 | case BFI_IOIM_STS_ABORTED: | |
76 | case BFI_IOIM_STS_TIMEDOUT: | |
77 | case BFI_IOIM_STS_PATHTOV: | |
78 | default: | |
79 | cmnd->result = ScsiResult(DID_ERROR, 0); | |
80 | } | |
81 | ||
82 | /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ | |
83 | if (cmnd->device->host != NULL) | |
84 | scsi_dma_unmap(cmnd); | |
85 | ||
86 | cmnd->host_scribble = NULL; | |
87 | bfa_trc(bfad, cmnd->result); | |
88 | ||
89 | itnim_data = cmnd->device->hostdata; | |
90 | if (itnim_data) { | |
91 | itnim = itnim_data->itnim; | |
92 | if (!cmnd->result && itnim && | |
93 | (bfa_lun_queue_depth > cmnd->device->queue_depth)) { | |
94 | /* Queue depth adjustment for good status completion */ | |
95 | bfad_os_ramp_up_qdepth(itnim, cmnd->device); | |
96 | } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) { | |
97 | /* qfull handling */ | |
98 | bfad_os_handle_qfull(itnim, cmnd->device); | |
99 | } | |
100 | } | |
101 | ||
102 | cmnd->scsi_done(cmnd); | |
103 | } | |
104 | ||
105 | void | |
106 | bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio) | |
107 | { | |
108 | struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; | |
109 | struct bfad_itnim_data_s *itnim_data; | |
110 | struct bfad_itnim_s *itnim; | |
111 | ||
112 | cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD); | |
113 | ||
114 | /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ | |
115 | if (cmnd->device->host != NULL) | |
116 | scsi_dma_unmap(cmnd); | |
117 | ||
118 | cmnd->host_scribble = NULL; | |
119 | ||
120 | /* Queue depth adjustment */ | |
121 | if (bfa_lun_queue_depth > cmnd->device->queue_depth) { | |
122 | itnim_data = cmnd->device->hostdata; | |
123 | if (itnim_data) { | |
124 | itnim = itnim_data->itnim; | |
125 | if (itnim) | |
126 | bfad_os_ramp_up_qdepth(itnim, cmnd->device); | |
127 | } | |
128 | } | |
129 | ||
130 | cmnd->scsi_done(cmnd); | |
131 | } | |
132 | ||
133 | void | |
134 | bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio) | |
135 | { | |
136 | struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; | |
137 | struct bfad_s *bfad = drv; | |
138 | ||
139 | cmnd->result = ScsiResult(DID_ERROR, 0); | |
140 | ||
141 | /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ | |
142 | if (cmnd->device->host != NULL) | |
143 | scsi_dma_unmap(cmnd); | |
144 | ||
145 | bfa_trc(bfad, cmnd->result); | |
146 | cmnd->host_scribble = NULL; | |
147 | } | |
148 | ||
149 | void | |
150 | bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk, | |
151 | enum bfi_tskim_status tsk_status) | |
152 | { | |
153 | struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk; | |
154 | wait_queue_head_t *wq; | |
155 | ||
156 | cmnd->SCp.Status |= tsk_status << 1; | |
157 | set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status); | |
158 | wq = (wait_queue_head_t *) cmnd->SCp.ptr; | |
159 | cmnd->SCp.ptr = NULL; | |
160 | ||
161 | if (wq) | |
162 | wake_up(wq); | |
163 | } | |
164 | ||
165 | void | |
166 | bfa_cb_ioim_resfree(void *drv) | |
167 | { | |
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 * | |
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]; | |
7725ccfd | 182 | struct bfad_s *bfad = im_port->bfad; |
0a4b1fc0 | 183 | char model[BFA_ADAPTER_MODEL_NAME_LEN]; |
7725ccfd | 184 | |
0a4b1fc0 | 185 | bfa_get_adapter_model(&bfad->bfa, model); |
7725ccfd JH |
186 | |
187 | memset(bfa_buf, 0, sizeof(bfa_buf)); | |
188 | snprintf(bfa_buf, sizeof(bfa_buf), | |
0a4b1fc0 KG |
189 | "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s", |
190 | model, bfad->pci_name, BFAD_DRIVER_VERSION); | |
7725ccfd JH |
191 | return bfa_buf; |
192 | } | |
193 | ||
194 | /** | |
195 | * Scsi_Host template entry, aborts the specified SCSI command. | |
196 | * | |
197 | * Returns: SUCCESS or FAILED. | |
198 | */ | |
199 | static int | |
200 | bfad_im_abort_handler(struct scsi_cmnd *cmnd) | |
201 | { | |
202 | struct Scsi_Host *shost = cmnd->device->host; | |
203 | struct bfad_im_port_s *im_port = | |
204 | (struct bfad_im_port_s *) shost->hostdata[0]; | |
205 | struct bfad_s *bfad = im_port->bfad; | |
206 | struct bfa_ioim_s *hal_io; | |
207 | unsigned long flags; | |
208 | u32 timeout; | |
209 | int rc = FAILED; | |
210 | ||
211 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
212 | hal_io = (struct bfa_ioim_s *) cmnd->host_scribble; | |
213 | if (!hal_io) { | |
214 | /* IO has been completed, retrun success */ | |
215 | rc = SUCCESS; | |
216 | goto out; | |
217 | } | |
218 | if (hal_io->dio != (struct bfad_ioim_s *) cmnd) { | |
219 | rc = FAILED; | |
220 | goto out; | |
221 | } | |
222 | ||
223 | bfa_trc(bfad, hal_io->iotag); | |
224 | bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT, | |
225 | im_port->shost->host_no, cmnd, hal_io->iotag); | |
226 | bfa_ioim_abort(hal_io); | |
227 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
228 | ||
229 | /* Need to wait until the command get aborted */ | |
230 | timeout = 10; | |
231 | while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) { | |
232 | set_current_state(TASK_UNINTERRUPTIBLE); | |
233 | schedule_timeout(timeout); | |
234 | if (timeout < 4 * HZ) | |
235 | timeout *= 2; | |
236 | } | |
237 | ||
238 | cmnd->scsi_done(cmnd); | |
239 | bfa_trc(bfad, hal_io->iotag); | |
240 | bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT_COMP, | |
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 | |
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 | ||
7725ccfd JH |
256 | tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); |
257 | if (!tskim) { | |
258 | BFA_DEV_PRINTF(bfad, BFA_ERR, | |
259 | "target reset, fail to allocate tskim\n"); | |
260 | rc = BFA_STATUS_FAILED; | |
261 | goto out; | |
262 | } | |
263 | ||
264 | /* | |
265 | * Set host_scribble to NULL to avoid aborting a task command if | |
266 | * happens. | |
267 | */ | |
268 | cmnd->host_scribble = NULL; | |
269 | cmnd->SCp.Status = 0; | |
270 | bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); | |
271 | bfa_tskim_start(tskim, bfa_itnim, (lun_t)0, | |
272 | FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO); | |
273 | out: | |
274 | return rc; | |
275 | } | |
276 | ||
277 | /** | |
278 | * Scsi_Host template entry, resets a LUN and abort its all commands. | |
279 | * | |
280 | * Returns: SUCCESS or FAILED. | |
281 | * | |
282 | */ | |
283 | static int | |
284 | bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd) | |
285 | { | |
286 | struct Scsi_Host *shost = cmnd->device->host; | |
287 | struct bfad_im_port_s *im_port = | |
288 | (struct bfad_im_port_s *) shost->hostdata[0]; | |
289 | struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; | |
290 | struct bfad_s *bfad = im_port->bfad; | |
291 | struct bfa_tskim_s *tskim; | |
292 | struct bfad_itnim_s *itnim; | |
293 | struct bfa_itnim_s *bfa_itnim; | |
294 | DECLARE_WAIT_QUEUE_HEAD(wq); | |
295 | int rc = SUCCESS; | |
296 | unsigned long flags; | |
297 | enum bfi_tskim_status task_status; | |
298 | ||
299 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
300 | itnim = itnim_data->itnim; | |
301 | if (!itnim) { | |
302 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
303 | rc = FAILED; | |
304 | goto out; | |
305 | } | |
306 | ||
307 | tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); | |
308 | if (!tskim) { | |
309 | BFA_DEV_PRINTF(bfad, BFA_ERR, | |
310 | "LUN reset, fail to allocate tskim"); | |
311 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
312 | rc = FAILED; | |
313 | goto out; | |
314 | } | |
315 | ||
316 | /** | |
317 | * Set host_scribble to NULL to avoid aborting a task command | |
318 | * if happens. | |
319 | */ | |
320 | cmnd->host_scribble = NULL; | |
321 | cmnd->SCp.ptr = (char *)&wq; | |
322 | cmnd->SCp.Status = 0; | |
323 | bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); | |
324 | bfa_tskim_start(tskim, bfa_itnim, | |
325 | bfad_int_to_lun(cmnd->device->lun), | |
326 | FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO); | |
327 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
328 | ||
329 | wait_event(wq, test_bit(IO_DONE_BIT, | |
330 | (unsigned long *)&cmnd->SCp.Status)); | |
331 | ||
332 | task_status = cmnd->SCp.Status >> 1; | |
333 | if (task_status != BFI_TSKIM_STS_OK) { | |
334 | BFA_DEV_PRINTF(bfad, BFA_ERR, "LUN reset failure, status: %d\n", | |
335 | task_status); | |
336 | rc = FAILED; | |
337 | } | |
338 | ||
339 | out: | |
340 | return rc; | |
341 | } | |
342 | ||
343 | /** | |
344 | * Scsi_Host template entry, resets the bus and abort all commands. | |
345 | */ | |
346 | static int | |
347 | bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd) | |
348 | { | |
349 | struct Scsi_Host *shost = cmnd->device->host; | |
350 | struct bfad_im_port_s *im_port = | |
351 | (struct bfad_im_port_s *) shost->hostdata[0]; | |
352 | struct bfad_s *bfad = im_port->bfad; | |
353 | struct bfad_itnim_s *itnim; | |
354 | unsigned long flags; | |
355 | u32 i, rc, err_cnt = 0; | |
356 | DECLARE_WAIT_QUEUE_HEAD(wq); | |
357 | enum bfi_tskim_status task_status; | |
358 | ||
359 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
360 | for (i = 0; i < MAX_FCP_TARGET; i++) { | |
361 | itnim = bfad_os_get_itnim(im_port, i); | |
362 | if (itnim) { | |
363 | cmnd->SCp.ptr = (char *)&wq; | |
364 | rc = bfad_im_target_reset_send(bfad, cmnd, itnim); | |
365 | if (rc != BFA_STATUS_OK) { | |
366 | err_cnt++; | |
367 | continue; | |
368 | } | |
369 | ||
370 | /* wait target reset to complete */ | |
371 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
372 | wait_event(wq, test_bit(IO_DONE_BIT, | |
373 | (unsigned long *)&cmnd->SCp.Status)); | |
374 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
375 | ||
376 | task_status = cmnd->SCp.Status >> 1; | |
377 | if (task_status != BFI_TSKIM_STS_OK) { | |
378 | BFA_DEV_PRINTF(bfad, BFA_ERR, | |
379 | "target reset failure," | |
380 | " status: %d\n", task_status); | |
381 | err_cnt++; | |
382 | } | |
383 | } | |
384 | } | |
385 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
386 | ||
387 | if (err_cnt) | |
388 | return FAILED; | |
389 | ||
390 | return SUCCESS; | |
391 | } | |
392 | ||
393 | /** | |
394 | * Scsi_Host template entry slave_destroy. | |
395 | */ | |
396 | static void | |
397 | bfad_im_slave_destroy(struct scsi_device *sdev) | |
398 | { | |
399 | sdev->hostdata = NULL; | |
400 | return; | |
401 | } | |
402 | ||
403 | /** | |
404 | * BFA FCS itnim callbacks | |
405 | */ | |
406 | ||
407 | /** | |
408 | * BFA FCS itnim alloc callback, after successful PRLI | |
409 | * Context: Interrupt | |
410 | */ | |
411 | void | |
412 | bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim, | |
413 | struct bfad_itnim_s **itnim_drv) | |
414 | { | |
415 | *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC); | |
416 | if (*itnim_drv == NULL) | |
417 | return; | |
418 | ||
419 | (*itnim_drv)->im = bfad->im; | |
420 | *itnim = &(*itnim_drv)->fcs_itnim; | |
421 | (*itnim_drv)->state = ITNIM_STATE_NONE; | |
422 | ||
423 | /* | |
424 | * Initiaze the itnim_work | |
425 | */ | |
426 | INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler); | |
427 | bfad->bfad_flags |= BFAD_RPORT_ONLINE; | |
428 | } | |
429 | ||
430 | /** | |
431 | * BFA FCS itnim free callback. | |
432 | * Context: Interrupt. bfad_lock is held | |
433 | */ | |
434 | void | |
435 | bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv) | |
436 | { | |
437 | struct bfad_port_s *port; | |
438 | wwn_t wwpn; | |
439 | u32 fcid; | |
440 | char wwpn_str[32], fcid_str[16]; | |
441 | ||
442 | /* online to free state transtion should not happen */ | |
443 | bfa_assert(itnim_drv->state != ITNIM_STATE_ONLINE); | |
444 | ||
445 | itnim_drv->queue_work = 1; | |
446 | /* offline request is not yet done, use the same request to free */ | |
447 | if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING) | |
448 | itnim_drv->queue_work = 0; | |
449 | ||
450 | itnim_drv->state = ITNIM_STATE_FREE; | |
451 | port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); | |
452 | itnim_drv->im_port = port->im_port; | |
453 | wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim); | |
454 | fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim); | |
455 | wwn2str(wwpn_str, wwpn); | |
456 | fcid2str(fcid_str, fcid); | |
457 | bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_FREE, | |
458 | port->im_port->shost->host_no, | |
459 | fcid_str, wwpn_str); | |
460 | bfad_os_itnim_process(itnim_drv); | |
461 | } | |
462 | ||
463 | /** | |
464 | * BFA FCS itnim online callback. | |
465 | * Context: Interrupt. bfad_lock is held | |
466 | */ | |
467 | void | |
468 | bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv) | |
469 | { | |
470 | struct bfad_port_s *port; | |
471 | ||
472 | itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim); | |
473 | port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); | |
474 | itnim_drv->state = ITNIM_STATE_ONLINE; | |
475 | itnim_drv->queue_work = 1; | |
476 | itnim_drv->im_port = port->im_port; | |
477 | bfad_os_itnim_process(itnim_drv); | |
478 | } | |
479 | ||
480 | /** | |
481 | * BFA FCS itnim offline callback. | |
482 | * Context: Interrupt. bfad_lock is held | |
483 | */ | |
484 | void | |
485 | bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv) | |
486 | { | |
487 | struct bfad_port_s *port; | |
488 | struct bfad_s *bfad; | |
489 | ||
490 | port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); | |
491 | bfad = port->bfad; | |
492 | if ((bfad->pport.flags & BFAD_PORT_DELETE) || | |
493 | (port->flags & BFAD_PORT_DELETE)) { | |
494 | itnim_drv->state = ITNIM_STATE_OFFLINE; | |
495 | return; | |
496 | } | |
497 | itnim_drv->im_port = port->im_port; | |
498 | itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING; | |
499 | itnim_drv->queue_work = 1; | |
500 | bfad_os_itnim_process(itnim_drv); | |
501 | } | |
502 | ||
503 | /** | |
504 | * BFA FCS itnim timeout callback. | |
505 | * Context: Interrupt. bfad_lock is held | |
506 | */ | |
507 | void bfa_fcb_itnim_tov(struct bfad_itnim_s *itnim) | |
508 | { | |
509 | itnim->state = ITNIM_STATE_TIMEOUT; | |
510 | } | |
511 | ||
7725ccfd JH |
512 | /** |
513 | * Allocate a Scsi_Host for a port. | |
514 | */ | |
515 | int | |
b504293f JH |
516 | bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port, |
517 | struct device *dev) | |
7725ccfd JH |
518 | { |
519 | int error = 1; | |
520 | ||
42b426ec | 521 | mutex_lock(&bfad_mutex); |
7725ccfd | 522 | if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) { |
42b426ec | 523 | mutex_unlock(&bfad_mutex); |
7725ccfd JH |
524 | printk(KERN_WARNING "idr_pre_get failure\n"); |
525 | goto out; | |
526 | } | |
527 | ||
528 | error = idr_get_new(&bfad_im_port_index, im_port, | |
529 | &im_port->idr_id); | |
530 | if (error) { | |
42b426ec | 531 | mutex_unlock(&bfad_mutex); |
7725ccfd JH |
532 | printk(KERN_WARNING "idr_get_new failure\n"); |
533 | goto out; | |
534 | } | |
535 | ||
42b426ec JH |
536 | mutex_unlock(&bfad_mutex); |
537 | ||
7725ccfd JH |
538 | im_port->shost = bfad_os_scsi_host_alloc(im_port, bfad); |
539 | if (!im_port->shost) { | |
540 | error = 1; | |
541 | goto out_free_idr; | |
542 | } | |
543 | ||
544 | im_port->shost->hostdata[0] = (unsigned long)im_port; | |
545 | im_port->shost->unique_id = im_port->idr_id; | |
546 | im_port->shost->this_id = -1; | |
547 | im_port->shost->max_id = MAX_FCP_TARGET; | |
548 | im_port->shost->max_lun = MAX_FCP_LUN; | |
549 | im_port->shost->max_cmd_len = 16; | |
550 | im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth; | |
b504293f JH |
551 | if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) |
552 | im_port->shost->transportt = bfad_im_scsi_transport_template; | |
553 | else | |
554 | im_port->shost->transportt = | |
555 | bfad_im_scsi_vport_transport_template; | |
7725ccfd | 556 | |
c54d557c | 557 | error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev); |
7725ccfd | 558 | if (error) { |
b504293f | 559 | printk(KERN_WARNING "scsi_add_host failure %d\n", error); |
7725ccfd JH |
560 | goto out_fc_rel; |
561 | } | |
562 | ||
563 | /* setup host fixed attribute if the lk supports */ | |
564 | bfad_os_fc_host_init(im_port); | |
565 | ||
566 | return 0; | |
567 | ||
568 | out_fc_rel: | |
569 | scsi_host_put(im_port->shost); | |
d9883548 | 570 | im_port->shost = NULL; |
7725ccfd | 571 | out_free_idr: |
42b426ec | 572 | mutex_lock(&bfad_mutex); |
7725ccfd | 573 | idr_remove(&bfad_im_port_index, im_port->idr_id); |
42b426ec | 574 | mutex_unlock(&bfad_mutex); |
7725ccfd JH |
575 | out: |
576 | return error; | |
577 | } | |
578 | ||
579 | void | |
580 | bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) | |
581 | { | |
7725ccfd JH |
582 | bfa_trc(bfad, bfad->inst_no); |
583 | bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE, | |
584 | im_port->shost->host_no); | |
585 | ||
586 | fc_remove_host(im_port->shost); | |
587 | ||
588 | scsi_remove_host(im_port->shost); | |
589 | scsi_host_put(im_port->shost); | |
590 | ||
42b426ec | 591 | mutex_lock(&bfad_mutex); |
7725ccfd | 592 | idr_remove(&bfad_im_port_index, im_port->idr_id); |
42b426ec | 593 | mutex_unlock(&bfad_mutex); |
7725ccfd JH |
594 | } |
595 | ||
596 | static void | |
597 | bfad_im_port_delete_handler(struct work_struct *work) | |
598 | { | |
599 | struct bfad_im_port_s *im_port = | |
600 | container_of(work, struct bfad_im_port_s, port_delete_work); | |
c54d557c | 601 | struct bfad_s *bfad = im_port->bfad; |
7725ccfd | 602 | |
b504293f JH |
603 | if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) { |
604 | im_port->flags |= BFAD_PORT_DELETE; | |
605 | fc_vport_terminate(im_port->fc_vport); | |
c54d557c | 606 | atomic_dec(&bfad->wq_reqcnt); |
b504293f JH |
607 | } |
608 | ||
7725ccfd JH |
609 | } |
610 | ||
611 | bfa_status_t | |
612 | bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port) | |
613 | { | |
614 | int rc = BFA_STATUS_OK; | |
615 | struct bfad_im_port_s *im_port; | |
616 | ||
617 | im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC); | |
618 | if (im_port == NULL) { | |
619 | rc = BFA_STATUS_ENOMEM; | |
620 | goto ext; | |
621 | } | |
622 | port->im_port = im_port; | |
623 | im_port->port = port; | |
624 | im_port->bfad = bfad; | |
625 | ||
626 | INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler); | |
627 | INIT_LIST_HEAD(&im_port->itnim_mapped_list); | |
628 | INIT_LIST_HEAD(&im_port->binding_list); | |
629 | ||
630 | ext: | |
631 | return rc; | |
632 | } | |
633 | ||
634 | void | |
635 | bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port) | |
636 | { | |
637 | struct bfad_im_port_s *im_port = port->im_port; | |
638 | ||
c54d557c JH |
639 | if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) { |
640 | atomic_inc(&bfad->wq_reqcnt); | |
641 | queue_work(bfad->im->drv_workq, | |
7725ccfd | 642 | &im_port->port_delete_work); |
c54d557c | 643 | } |
7725ccfd JH |
644 | } |
645 | ||
646 | void | |
647 | bfad_im_port_clean(struct bfad_im_port_s *im_port) | |
648 | { | |
649 | struct bfad_fcp_binding *bp, *bp_new; | |
650 | unsigned long flags; | |
651 | struct bfad_s *bfad = im_port->bfad; | |
652 | ||
653 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
654 | list_for_each_entry_safe(bp, bp_new, &im_port->binding_list, | |
655 | list_entry) { | |
656 | list_del(&bp->list_entry); | |
657 | kfree(bp); | |
658 | } | |
659 | ||
660 | /* the itnim_mapped_list must be empty at this time */ | |
661 | bfa_assert(list_empty(&im_port->itnim_mapped_list)); | |
662 | ||
663 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
664 | } | |
665 | ||
666 | void | |
667 | bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port) | |
668 | { | |
669 | } | |
670 | ||
671 | void | |
672 | bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port) | |
673 | { | |
674 | } | |
675 | ||
676 | bfa_status_t | |
677 | bfad_im_probe(struct bfad_s *bfad) | |
678 | { | |
679 | struct bfad_im_s *im; | |
680 | bfa_status_t rc = BFA_STATUS_OK; | |
681 | ||
682 | im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL); | |
683 | if (im == NULL) { | |
684 | rc = BFA_STATUS_ENOMEM; | |
685 | goto ext; | |
686 | } | |
687 | ||
688 | bfad->im = im; | |
689 | im->bfad = bfad; | |
690 | ||
691 | if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) { | |
692 | kfree(im); | |
693 | rc = BFA_STATUS_FAILED; | |
694 | } | |
695 | ||
696 | ext: | |
697 | return rc; | |
698 | } | |
699 | ||
700 | void | |
701 | bfad_im_probe_undo(struct bfad_s *bfad) | |
702 | { | |
703 | if (bfad->im) { | |
c54d557c JH |
704 | while (atomic_read(&bfad->wq_reqcnt)) { |
705 | printk(KERN_INFO "bfa %s: waiting workq processing," | |
706 | " wq_reqcnt:%x\n", bfad->pci_name, | |
707 | atomic_read(&bfad->wq_reqcnt)); | |
708 | schedule_timeout_uninterruptible(HZ); | |
709 | } | |
7725ccfd JH |
710 | bfad_os_destroy_workq(bfad->im); |
711 | kfree(bfad->im); | |
712 | bfad->im = NULL; | |
713 | } | |
714 | } | |
715 | ||
36d345a7 JH |
716 | /** |
717 | * Call back function to handle IO redirection state change | |
718 | */ | |
719 | void | |
720 | bfa_cb_ioredirect_state_change(void *hcb_bfad, bfa_boolean_t ioredirect) | |
721 | { | |
722 | /* Do nothing */ | |
723 | } | |
724 | ||
7725ccfd JH |
725 | struct Scsi_Host * |
726 | bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad) | |
727 | { | |
728 | struct scsi_host_template *sht; | |
729 | ||
730 | if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) | |
731 | sht = &bfad_im_scsi_host_template; | |
732 | else | |
733 | sht = &bfad_im_vport_template; | |
734 | ||
735 | sht->sg_tablesize = bfad->cfg_data.io_max_sge; | |
736 | ||
737 | return scsi_host_alloc(sht, sizeof(unsigned long)); | |
738 | } | |
739 | ||
740 | void | |
741 | bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) | |
742 | { | |
b504293f JH |
743 | if (!(im_port->flags & BFAD_PORT_DELETE)) |
744 | flush_workqueue(bfad->im->drv_workq); | |
7725ccfd JH |
745 | bfad_im_scsi_host_free(im_port->bfad, im_port); |
746 | bfad_im_port_clean(im_port); | |
747 | kfree(im_port); | |
748 | } | |
749 | ||
750 | void | |
751 | bfad_os_destroy_workq(struct bfad_im_s *im) | |
752 | { | |
753 | if (im && im->drv_workq) { | |
754 | destroy_workqueue(im->drv_workq); | |
755 | im->drv_workq = NULL; | |
756 | } | |
757 | } | |
758 | ||
759 | bfa_status_t | |
760 | bfad_os_thread_workq(struct bfad_s *bfad) | |
761 | { | |
762 | struct bfad_im_s *im = bfad->im; | |
763 | ||
764 | bfa_trc(bfad, 0); | |
765 | snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d", | |
766 | bfad->inst_no); | |
767 | im->drv_workq = create_singlethread_workqueue(im->drv_workq_name); | |
768 | if (!im->drv_workq) | |
769 | return BFA_STATUS_FAILED; | |
770 | ||
771 | return BFA_STATUS_OK; | |
772 | } | |
773 | ||
774 | /** | |
775 | * Scsi_Host template entry. | |
776 | * | |
777 | * Description: | |
778 | * OS entry point to adjust the queue_depths on a per-device basis. | |
779 | * Called once per device during the bus scan. | |
780 | * Return non-zero if fails. | |
781 | */ | |
782 | static int | |
783 | bfad_im_slave_configure(struct scsi_device *sdev) | |
784 | { | |
785 | if (sdev->tagged_supported) | |
786 | scsi_activate_tcq(sdev, bfa_lun_queue_depth); | |
787 | else | |
788 | scsi_deactivate_tcq(sdev, bfa_lun_queue_depth); | |
789 | ||
790 | return 0; | |
791 | } | |
792 | ||
793 | struct scsi_host_template bfad_im_scsi_host_template = { | |
794 | .module = THIS_MODULE, | |
795 | .name = BFAD_DRIVER_NAME, | |
796 | .info = bfad_im_info, | |
797 | .queuecommand = bfad_im_queuecommand, | |
798 | .eh_abort_handler = bfad_im_abort_handler, | |
799 | .eh_device_reset_handler = bfad_im_reset_lun_handler, | |
800 | .eh_bus_reset_handler = bfad_im_reset_bus_handler, | |
801 | ||
802 | .slave_alloc = bfad_im_slave_alloc, | |
803 | .slave_configure = bfad_im_slave_configure, | |
804 | .slave_destroy = bfad_im_slave_destroy, | |
805 | ||
806 | .this_id = -1, | |
807 | .sg_tablesize = BFAD_IO_MAX_SGE, | |
808 | .cmd_per_lun = 3, | |
809 | .use_clustering = ENABLE_CLUSTERING, | |
810 | .shost_attrs = bfad_im_host_attrs, | |
811 | .max_sectors = 0xFFFF, | |
812 | }; | |
813 | ||
814 | struct scsi_host_template bfad_im_vport_template = { | |
815 | .module = THIS_MODULE, | |
816 | .name = BFAD_DRIVER_NAME, | |
817 | .info = bfad_im_info, | |
818 | .queuecommand = bfad_im_queuecommand, | |
819 | .eh_abort_handler = bfad_im_abort_handler, | |
820 | .eh_device_reset_handler = bfad_im_reset_lun_handler, | |
821 | .eh_bus_reset_handler = bfad_im_reset_bus_handler, | |
822 | ||
823 | .slave_alloc = bfad_im_slave_alloc, | |
824 | .slave_configure = bfad_im_slave_configure, | |
825 | .slave_destroy = bfad_im_slave_destroy, | |
826 | ||
827 | .this_id = -1, | |
828 | .sg_tablesize = BFAD_IO_MAX_SGE, | |
829 | .cmd_per_lun = 3, | |
830 | .use_clustering = ENABLE_CLUSTERING, | |
831 | .shost_attrs = bfad_im_vport_attrs, | |
832 | .max_sectors = 0xFFFF, | |
833 | }; | |
834 | ||
835 | void | |
836 | bfad_im_probe_post(struct bfad_im_s *im) | |
837 | { | |
838 | flush_workqueue(im->drv_workq); | |
839 | } | |
840 | ||
841 | bfa_status_t | |
842 | bfad_im_module_init(void) | |
843 | { | |
844 | bfad_im_scsi_transport_template = | |
845 | fc_attach_transport(&bfad_im_fc_function_template); | |
846 | if (!bfad_im_scsi_transport_template) | |
847 | return BFA_STATUS_ENOMEM; | |
848 | ||
b504293f JH |
849 | bfad_im_scsi_vport_transport_template = |
850 | fc_attach_transport(&bfad_im_vport_fc_function_template); | |
851 | if (!bfad_im_scsi_vport_transport_template) { | |
852 | fc_release_transport(bfad_im_scsi_transport_template); | |
853 | return BFA_STATUS_ENOMEM; | |
854 | } | |
855 | ||
7725ccfd JH |
856 | return BFA_STATUS_OK; |
857 | } | |
858 | ||
859 | void | |
860 | bfad_im_module_exit(void) | |
861 | { | |
862 | if (bfad_im_scsi_transport_template) | |
863 | fc_release_transport(bfad_im_scsi_transport_template); | |
b504293f JH |
864 | if (bfad_im_scsi_vport_transport_template) |
865 | fc_release_transport(bfad_im_scsi_vport_transport_template); | |
7725ccfd JH |
866 | } |
867 | ||
868 | void | |
869 | bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv) | |
870 | { | |
871 | struct bfad_im_s *im = itnim_drv->im; | |
872 | ||
873 | if (itnim_drv->queue_work) | |
874 | queue_work(im->drv_workq, &itnim_drv->itnim_work); | |
875 | } | |
876 | ||
877 | void | |
878 | bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev) | |
879 | { | |
880 | struct scsi_device *tmp_sdev; | |
881 | ||
882 | if (((jiffies - itnim->last_ramp_up_time) > | |
883 | BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) && | |
884 | ((jiffies - itnim->last_queue_full_time) > | |
885 | BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) { | |
886 | shost_for_each_device(tmp_sdev, sdev->host) { | |
887 | if (bfa_lun_queue_depth > tmp_sdev->queue_depth) { | |
888 | if (tmp_sdev->id != sdev->id) | |
889 | continue; | |
890 | if (tmp_sdev->ordered_tags) | |
891 | scsi_adjust_queue_depth(tmp_sdev, | |
892 | MSG_ORDERED_TAG, | |
893 | tmp_sdev->queue_depth + 1); | |
894 | else | |
895 | scsi_adjust_queue_depth(tmp_sdev, | |
896 | MSG_SIMPLE_TAG, | |
897 | tmp_sdev->queue_depth + 1); | |
898 | ||
899 | itnim->last_ramp_up_time = jiffies; | |
900 | } | |
901 | } | |
902 | } | |
903 | } | |
904 | ||
905 | void | |
906 | bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev) | |
907 | { | |
908 | struct scsi_device *tmp_sdev; | |
909 | ||
910 | itnim->last_queue_full_time = jiffies; | |
911 | ||
912 | shost_for_each_device(tmp_sdev, sdev->host) { | |
913 | if (tmp_sdev->id != sdev->id) | |
914 | continue; | |
915 | scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1); | |
916 | } | |
917 | } | |
918 | ||
919 | ||
920 | ||
921 | ||
922 | struct bfad_itnim_s * | |
923 | bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id) | |
924 | { | |
925 | struct bfad_itnim_s *itnim = NULL; | |
926 | ||
927 | /* Search the mapped list for this target ID */ | |
928 | list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) { | |
929 | if (id == itnim->scsi_tgt_id) | |
930 | return itnim; | |
931 | } | |
932 | ||
933 | return NULL; | |
934 | } | |
935 | ||
936 | /** | |
937 | * Scsi_Host template entry slave_alloc | |
938 | */ | |
939 | static int | |
940 | bfad_im_slave_alloc(struct scsi_device *sdev) | |
941 | { | |
942 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); | |
943 | ||
944 | if (!rport || fc_remote_port_chkready(rport)) | |
945 | return -ENXIO; | |
946 | ||
947 | sdev->hostdata = rport->dd_data; | |
948 | ||
949 | return 0; | |
950 | } | |
951 | ||
952 | void | |
953 | bfad_os_fc_host_init(struct bfad_im_port_s *im_port) | |
954 | { | |
955 | struct Scsi_Host *host = im_port->shost; | |
956 | struct bfad_s *bfad = im_port->bfad; | |
957 | struct bfad_port_s *port = im_port->port; | |
0a4b1fc0 KG |
958 | struct bfa_pport_attr_s pattr; |
959 | char model[BFA_ADAPTER_MODEL_NAME_LEN]; | |
960 | char fw_ver[BFA_VERSION_LEN]; | |
7725ccfd JH |
961 | |
962 | fc_host_node_name(host) = | |
963 | bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port))); | |
964 | fc_host_port_name(host) = | |
965 | bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port))); | |
b504293f | 966 | fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa); |
7725ccfd JH |
967 | |
968 | fc_host_supported_classes(host) = FC_COS_CLASS3; | |
969 | ||
970 | memset(fc_host_supported_fc4s(host), 0, | |
971 | sizeof(fc_host_supported_fc4s(host))); | |
972 | if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM)) | |
973 | /* For FCP type 0x08 */ | |
974 | fc_host_supported_fc4s(host)[2] = 1; | |
7542fa72 | 975 | if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC) |
7725ccfd JH |
976 | /* For LLC/SNAP type 0x05 */ |
977 | fc_host_supported_fc4s(host)[3] = 0x20; | |
978 | /* For fibre channel services type 0x20 */ | |
979 | fc_host_supported_fc4s(host)[7] = 1; | |
980 | ||
0a4b1fc0 KG |
981 | bfa_get_adapter_model(&bfad->bfa, model); |
982 | bfa_get_adapter_fw_ver(&bfad->bfa, fw_ver); | |
7725ccfd | 983 | sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s", |
0a4b1fc0 | 984 | model, fw_ver, BFAD_DRIVER_VERSION); |
7725ccfd JH |
985 | |
986 | fc_host_supported_speeds(host) = 0; | |
987 | fc_host_supported_speeds(host) |= | |
988 | FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT | | |
989 | FC_PORTSPEED_1GBIT; | |
990 | ||
0a4b1fc0 KG |
991 | bfa_fcport_get_attr(&bfad->bfa, &pattr); |
992 | fc_host_maxframe_size(host) = pattr.pport_cfg.maxfrsize; | |
7725ccfd JH |
993 | } |
994 | ||
995 | static void | |
996 | bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim) | |
997 | { | |
998 | struct fc_rport_identifiers rport_ids; | |
999 | struct fc_rport *fc_rport; | |
1000 | struct bfad_itnim_data_s *itnim_data; | |
1001 | ||
1002 | rport_ids.node_name = | |
1003 | bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim)); | |
1004 | rport_ids.port_name = | |
1005 | bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim)); | |
1006 | rport_ids.port_id = | |
1007 | bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim)); | |
1008 | rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; | |
1009 | ||
1010 | itnim->fc_rport = fc_rport = | |
1011 | fc_remote_port_add(im_port->shost, 0, &rport_ids); | |
1012 | ||
1013 | if (!fc_rport) | |
1014 | return; | |
1015 | ||
1016 | fc_rport->maxframe_size = | |
1017 | bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim); | |
1018 | fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim); | |
1019 | ||
1020 | itnim_data = fc_rport->dd_data; | |
1021 | itnim_data->itnim = itnim; | |
1022 | ||
1023 | rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; | |
1024 | ||
1025 | if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) | |
1026 | fc_remote_port_rolechg(fc_rport, rport_ids.roles); | |
1027 | ||
1028 | if ((fc_rport->scsi_target_id != -1) | |
1029 | && (fc_rport->scsi_target_id < MAX_FCP_TARGET)) | |
1030 | itnim->scsi_tgt_id = fc_rport->scsi_target_id; | |
1031 | ||
1032 | return; | |
1033 | } | |
1034 | ||
1035 | /** | |
1036 | * Work queue handler using FC transport service | |
1037 | * Context: kernel | |
1038 | */ | |
1039 | static void | |
1040 | bfad_im_itnim_work_handler(struct work_struct *work) | |
1041 | { | |
1042 | struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s, | |
1043 | itnim_work); | |
1044 | struct bfad_im_s *im = itnim->im; | |
1045 | struct bfad_s *bfad = im->bfad; | |
1046 | struct bfad_im_port_s *im_port; | |
1047 | unsigned long flags; | |
1048 | struct fc_rport *fc_rport; | |
1049 | wwn_t wwpn; | |
1050 | u32 fcid; | |
1051 | char wwpn_str[32], fcid_str[16]; | |
1052 | ||
1053 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1054 | im_port = itnim->im_port; | |
1055 | bfa_trc(bfad, itnim->state); | |
1056 | switch (itnim->state) { | |
1057 | case ITNIM_STATE_ONLINE: | |
1058 | if (!itnim->fc_rport) { | |
1059 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1060 | bfad_im_fc_rport_add(im_port, itnim); | |
1061 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1062 | wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim); | |
1063 | fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim); | |
1064 | wwn2str(wwpn_str, wwpn); | |
1065 | fcid2str(fcid_str, fcid); | |
1066 | list_add_tail(&itnim->list_entry, | |
1067 | &im_port->itnim_mapped_list); | |
1068 | bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE, | |
1069 | im_port->shost->host_no, | |
1070 | itnim->scsi_tgt_id, | |
1071 | fcid_str, wwpn_str); | |
1072 | } else { | |
1073 | printk(KERN_WARNING | |
1074 | "%s: itnim %llx is already in online state\n", | |
f8ceafde | 1075 | __func__, |
7725ccfd JH |
1076 | bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim)); |
1077 | } | |
1078 | ||
1079 | break; | |
1080 | case ITNIM_STATE_OFFLINE_PENDING: | |
1081 | itnim->state = ITNIM_STATE_OFFLINE; | |
1082 | if (itnim->fc_rport) { | |
1083 | fc_rport = itnim->fc_rport; | |
1084 | ((struct bfad_itnim_data_s *) | |
1085 | fc_rport->dd_data)->itnim = NULL; | |
1086 | itnim->fc_rport = NULL; | |
1087 | if (!(im_port->port->flags & BFAD_PORT_DELETE)) { | |
1088 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1089 | fc_rport->dev_loss_tmo = | |
1090 | bfa_fcpim_path_tov_get(&bfad->bfa) + 1; | |
1091 | fc_remote_port_delete(fc_rport); | |
1092 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1093 | } | |
1094 | wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim); | |
1095 | fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim); | |
1096 | wwn2str(wwpn_str, wwpn); | |
1097 | fcid2str(fcid_str, fcid); | |
1098 | list_del(&itnim->list_entry); | |
1099 | bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE, | |
1100 | im_port->shost->host_no, | |
1101 | itnim->scsi_tgt_id, | |
1102 | fcid_str, wwpn_str); | |
1103 | } | |
1104 | break; | |
1105 | case ITNIM_STATE_FREE: | |
1106 | if (itnim->fc_rport) { | |
1107 | fc_rport = itnim->fc_rport; | |
1108 | ((struct bfad_itnim_data_s *) | |
1109 | fc_rport->dd_data)->itnim = NULL; | |
1110 | itnim->fc_rport = NULL; | |
1111 | if (!(im_port->port->flags & BFAD_PORT_DELETE)) { | |
1112 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1113 | fc_rport->dev_loss_tmo = | |
1114 | bfa_fcpim_path_tov_get(&bfad->bfa) + 1; | |
1115 | fc_remote_port_delete(fc_rport); | |
1116 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1117 | } | |
1118 | list_del(&itnim->list_entry); | |
1119 | } | |
1120 | ||
1121 | kfree(itnim); | |
1122 | break; | |
1123 | default: | |
1124 | bfa_assert(0); | |
1125 | break; | |
1126 | } | |
1127 | ||
1128 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1129 | } | |
1130 | ||
1131 | /** | |
1132 | * Scsi_Host template entry, queue a SCSI command to the BFAD. | |
1133 | */ | |
1134 | static int | |
1135 | bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
1136 | { | |
1137 | struct bfad_im_port_s *im_port = | |
1138 | (struct bfad_im_port_s *) cmnd->device->host->hostdata[0]; | |
1139 | struct bfad_s *bfad = im_port->bfad; | |
1140 | struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; | |
1141 | struct bfad_itnim_s *itnim; | |
1142 | struct bfa_ioim_s *hal_io; | |
1143 | unsigned long flags; | |
1144 | int rc; | |
1145 | s16 sg_cnt = 0; | |
1146 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
1147 | ||
1148 | rc = fc_remote_port_chkready(rport); | |
1149 | if (rc) { | |
1150 | cmnd->result = rc; | |
1151 | done(cmnd); | |
1152 | return 0; | |
1153 | } | |
1154 | ||
1155 | sg_cnt = scsi_dma_map(cmnd); | |
1156 | ||
1157 | if (sg_cnt < 0) | |
1158 | return SCSI_MLQUEUE_HOST_BUSY; | |
1159 | ||
1160 | cmnd->scsi_done = done; | |
1161 | ||
1162 | spin_lock_irqsave(&bfad->bfad_lock, flags); | |
1163 | if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) { | |
1164 | printk(KERN_WARNING | |
1165 | "bfad%d, queuecommand %p %x failed, BFA stopped\n", | |
1166 | bfad->inst_no, cmnd, cmnd->cmnd[0]); | |
1167 | cmnd->result = ScsiResult(DID_NO_CONNECT, 0); | |
1168 | goto out_fail_cmd; | |
1169 | } | |
1170 | ||
1171 | itnim = itnim_data->itnim; | |
1172 | if (!itnim) { | |
1173 | cmnd->result = ScsiResult(DID_IMM_RETRY, 0); | |
1174 | goto out_fail_cmd; | |
1175 | } | |
1176 | ||
1177 | hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd, | |
1178 | itnim->bfa_itnim, sg_cnt); | |
1179 | if (!hal_io) { | |
1180 | printk(KERN_WARNING "hal_io failure\n"); | |
1181 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1182 | scsi_dma_unmap(cmnd); | |
1183 | return SCSI_MLQUEUE_HOST_BUSY; | |
1184 | } | |
1185 | ||
1186 | cmnd->host_scribble = (char *)hal_io; | |
1187 | bfa_trc_fp(bfad, hal_io->iotag); | |
1188 | bfa_ioim_start(hal_io); | |
1189 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1190 | ||
1191 | return 0; | |
1192 | ||
1193 | out_fail_cmd: | |
1194 | spin_unlock_irqrestore(&bfad->bfad_lock, flags); | |
1195 | scsi_dma_unmap(cmnd); | |
1196 | if (done) | |
1197 | done(cmnd); | |
1198 | ||
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | void | |
1203 | bfad_os_rport_online_wait(struct bfad_s *bfad) | |
1204 | { | |
1205 | int i; | |
1206 | int rport_delay = 10; | |
1207 | ||
1208 | for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE) | |
1209 | && i < bfa_linkup_delay; i++) | |
1210 | schedule_timeout_uninterruptible(HZ); | |
1211 | ||
1212 | if (bfad->bfad_flags & BFAD_PORT_ONLINE) { | |
1213 | rport_delay = rport_delay < bfa_linkup_delay ? | |
1214 | rport_delay : bfa_linkup_delay; | |
1215 | for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE) | |
1216 | && i < rport_delay; i++) | |
1217 | schedule_timeout_uninterruptible(HZ); | |
1218 | ||
1219 | if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) | |
1220 | schedule_timeout_uninterruptible(rport_delay * HZ); | |
1221 | } | |
1222 | } | |
1223 | ||
1224 | int | |
1225 | bfad_os_get_linkup_delay(struct bfad_s *bfad) | |
1226 | { | |
1227 | ||
15b64a83 JH |
1228 | u8 nwwns = 0; |
1229 | wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX]; | |
1230 | int ldelay; | |
7725ccfd JH |
1231 | |
1232 | /* | |
1233 | * Querying for the boot target port wwns | |
1234 | * -- read from boot information in flash. | |
1235 | * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30 | |
1236 | * else => local boot machine set bfa_linkup_delay = 10 | |
1237 | */ | |
1238 | ||
15b64a83 | 1239 | bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns); |
7725ccfd JH |
1240 | |
1241 | if (nwwns > 0) { | |
1242 | /* If boot over SAN; linkup_delay = 30sec */ | |
1243 | ldelay = 30; | |
1244 | } else { | |
1245 | /* If local boot; linkup_delay = 10sec */ | |
1246 | ldelay = 0; | |
1247 | } | |
1248 | ||
1249 | return ldelay; | |
1250 | } | |
1251 | ||
1252 |