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ARM: 6246/1: mmci: support larger MMCIDATALENGTH register
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / bfa / bfad_im.c
blob5b7cf539e50b18fca22be8c507650291f4970fab
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 <linux/slab.h>
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;
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_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;
48 u8 host_status = DID_OK;
49
50 switch (io_status) {
51 case BFI_IOIM_STS_OK:
52 bfa_trc(bfad, scsi_status);
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 }
61 if (residue > 0) {
62 bfa_trc(bfad, residue);
63 scsi_set_resid(cmnd, residue);
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
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];
182 struct bfad_s *bfad = im_port->bfad;
183 char model[BFA_ADAPTER_MODEL_NAME_LEN];
184
185 bfa_get_adapter_model(&bfad->bfa, model);
186
187 memset(bfa_buf, 0, sizeof(bfa_buf));
188 snprintf(bfa_buf, sizeof(bfa_buf),
189 "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s",
190 model, bfad->pci_name, BFAD_DRIVER_VERSION);
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
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
512 /**
513 * Allocate a Scsi_Host for a port.
514 */
515 int
516 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
517 struct device *dev)
518 {
519 int error = 1;
520
521 mutex_lock(&bfad_mutex);
522 if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
523 mutex_unlock(&bfad_mutex);
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) {
531 mutex_unlock(&bfad_mutex);
532 printk(KERN_WARNING "idr_get_new failure\n");
533 goto out;
534 }
535
536 mutex_unlock(&bfad_mutex);
537
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;
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;
556
557 error = scsi_add_host(im_port->shost, dev);
558 if (error) {
559 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
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);
570 out_free_idr:
571 mutex_lock(&bfad_mutex);
572 idr_remove(&bfad_im_port_index, im_port->idr_id);
573 mutex_unlock(&bfad_mutex);
574 out:
575 return error;
576 }
577
578 void
579 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
580 {
581 bfa_trc(bfad, bfad->inst_no);
582 bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE,
583 im_port->shost->host_no);
584
585 fc_remove_host(im_port->shost);
586
587 scsi_remove_host(im_port->shost);
588 scsi_host_put(im_port->shost);
589
590 mutex_lock(&bfad_mutex);
591 idr_remove(&bfad_im_port_index, im_port->idr_id);
592 mutex_unlock(&bfad_mutex);
593 }
594
595 static void
596 bfad_im_port_delete_handler(struct work_struct *work)
597 {
598 struct bfad_im_port_s *im_port =
599 container_of(work, struct bfad_im_port_s, port_delete_work);
600
601 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
602 im_port->flags |= BFAD_PORT_DELETE;
603 fc_vport_terminate(im_port->fc_vport);
604 }
605
606 }
607
608 bfa_status_t
609 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
610 {
611 int rc = BFA_STATUS_OK;
612 struct bfad_im_port_s *im_port;
613
614 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
615 if (im_port == NULL) {
616 rc = BFA_STATUS_ENOMEM;
617 goto ext;
618 }
619 port->im_port = im_port;
620 im_port->port = port;
621 im_port->bfad = bfad;
622
623 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
624 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
625 INIT_LIST_HEAD(&im_port->binding_list);
626
627 ext:
628 return rc;
629 }
630
631 void
632 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
633 {
634 struct bfad_im_port_s *im_port = port->im_port;
635
636 queue_work(bfad->im->drv_workq,
637 &im_port->port_delete_work);
638 }
639
640 void
641 bfad_im_port_clean(struct bfad_im_port_s *im_port)
642 {
643 struct bfad_fcp_binding *bp, *bp_new;
644 unsigned long flags;
645 struct bfad_s *bfad = im_port->bfad;
646
647 spin_lock_irqsave(&bfad->bfad_lock, flags);
648 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
649 list_entry) {
650 list_del(&bp->list_entry);
651 kfree(bp);
652 }
653
654 /* the itnim_mapped_list must be empty at this time */
655 bfa_assert(list_empty(&im_port->itnim_mapped_list));
656
657 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
658 }
659
660 void
661 bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port)
662 {
663 }
664
665 void
666 bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port)
667 {
668 }
669
670 bfa_status_t
671 bfad_im_probe(struct bfad_s *bfad)
672 {
673 struct bfad_im_s *im;
674 bfa_status_t rc = BFA_STATUS_OK;
675
676 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
677 if (im == NULL) {
678 rc = BFA_STATUS_ENOMEM;
679 goto ext;
680 }
681
682 bfad->im = im;
683 im->bfad = bfad;
684
685 if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) {
686 kfree(im);
687 rc = BFA_STATUS_FAILED;
688 }
689
690 ext:
691 return rc;
692 }
693
694 void
695 bfad_im_probe_undo(struct bfad_s *bfad)
696 {
697 if (bfad->im) {
698 bfad_os_destroy_workq(bfad->im);
699 kfree(bfad->im);
700 bfad->im = NULL;
701 }
702 }
703
704 struct Scsi_Host *
705 bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
706 {
707 struct scsi_host_template *sht;
708
709 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
710 sht = &bfad_im_scsi_host_template;
711 else
712 sht = &bfad_im_vport_template;
713
714 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
715
716 return scsi_host_alloc(sht, sizeof(unsigned long));
717 }
718
719 void
720 bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
721 {
722 if (!(im_port->flags & BFAD_PORT_DELETE))
723 flush_workqueue(bfad->im->drv_workq);
724 bfad_im_scsi_host_free(im_port->bfad, im_port);
725 bfad_im_port_clean(im_port);
726 kfree(im_port);
727 }
728
729 void
730 bfad_os_destroy_workq(struct bfad_im_s *im)
731 {
732 if (im && im->drv_workq) {
733 destroy_workqueue(im->drv_workq);
734 im->drv_workq = NULL;
735 }
736 }
737
738 bfa_status_t
739 bfad_os_thread_workq(struct bfad_s *bfad)
740 {
741 struct bfad_im_s *im = bfad->im;
742
743 bfa_trc(bfad, 0);
744 snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d",
745 bfad->inst_no);
746 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
747 if (!im->drv_workq)
748 return BFA_STATUS_FAILED;
749
750 return BFA_STATUS_OK;
751 }
752
753 /**
754 * Scsi_Host template entry.
755 *
756 * Description:
757 * OS entry point to adjust the queue_depths on a per-device basis.
758 * Called once per device during the bus scan.
759 * Return non-zero if fails.
760 */
761 static int
762 bfad_im_slave_configure(struct scsi_device *sdev)
763 {
764 if (sdev->tagged_supported)
765 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
766 else
767 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
768
769 return 0;
770 }
771
772 struct scsi_host_template bfad_im_scsi_host_template = {
773 .module = THIS_MODULE,
774 .name = BFAD_DRIVER_NAME,
775 .info = bfad_im_info,
776 .queuecommand = bfad_im_queuecommand,
777 .eh_abort_handler = bfad_im_abort_handler,
778 .eh_device_reset_handler = bfad_im_reset_lun_handler,
779 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
780
781 .slave_alloc = bfad_im_slave_alloc,
782 .slave_configure = bfad_im_slave_configure,
783 .slave_destroy = bfad_im_slave_destroy,
784
785 .this_id = -1,
786 .sg_tablesize = BFAD_IO_MAX_SGE,
787 .cmd_per_lun = 3,
788 .use_clustering = ENABLE_CLUSTERING,
789 .shost_attrs = bfad_im_host_attrs,
790 .max_sectors = 0xFFFF,
791 };
792
793 struct scsi_host_template bfad_im_vport_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_vport_attrs,
811 .max_sectors = 0xFFFF,
812 };
813
814 void
815 bfad_im_probe_post(struct bfad_im_s *im)
816 {
817 flush_workqueue(im->drv_workq);
818 }
819
820 bfa_status_t
821 bfad_im_module_init(void)
822 {
823 bfad_im_scsi_transport_template =
824 fc_attach_transport(&bfad_im_fc_function_template);
825 if (!bfad_im_scsi_transport_template)
826 return BFA_STATUS_ENOMEM;
827
828 bfad_im_scsi_vport_transport_template =
829 fc_attach_transport(&bfad_im_vport_fc_function_template);
830 if (!bfad_im_scsi_vport_transport_template) {
831 fc_release_transport(bfad_im_scsi_transport_template);
832 return BFA_STATUS_ENOMEM;
833 }
834
835 return BFA_STATUS_OK;
836 }
837
838 void
839 bfad_im_module_exit(void)
840 {
841 if (bfad_im_scsi_transport_template)
842 fc_release_transport(bfad_im_scsi_transport_template);
843 if (bfad_im_scsi_vport_transport_template)
844 fc_release_transport(bfad_im_scsi_vport_transport_template);
845 }
846
847 void
848 bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv)
849 {
850 struct bfad_im_s *im = itnim_drv->im;
851
852 if (itnim_drv->queue_work)
853 queue_work(im->drv_workq, &itnim_drv->itnim_work);
854 }
855
856 void
857 bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
858 {
859 struct scsi_device *tmp_sdev;
860
861 if (((jiffies - itnim->last_ramp_up_time) >
862 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
863 ((jiffies - itnim->last_queue_full_time) >
864 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
865 shost_for_each_device(tmp_sdev, sdev->host) {
866 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
867 if (tmp_sdev->id != sdev->id)
868 continue;
869 if (tmp_sdev->ordered_tags)
870 scsi_adjust_queue_depth(tmp_sdev,
871 MSG_ORDERED_TAG,
872 tmp_sdev->queue_depth + 1);
873 else
874 scsi_adjust_queue_depth(tmp_sdev,
875 MSG_SIMPLE_TAG,
876 tmp_sdev->queue_depth + 1);
877
878 itnim->last_ramp_up_time = jiffies;
879 }
880 }
881 }
882 }
883
884 void
885 bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
886 {
887 struct scsi_device *tmp_sdev;
888
889 itnim->last_queue_full_time = jiffies;
890
891 shost_for_each_device(tmp_sdev, sdev->host) {
892 if (tmp_sdev->id != sdev->id)
893 continue;
894 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
895 }
896 }
897
898
899
900
901 struct bfad_itnim_s *
902 bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id)
903 {
904 struct bfad_itnim_s *itnim = NULL;
905
906 /* Search the mapped list for this target ID */
907 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
908 if (id == itnim->scsi_tgt_id)
909 return itnim;
910 }
911
912 return NULL;
913 }
914
915 /**
916 * Scsi_Host template entry slave_alloc
917 */
918 static int
919 bfad_im_slave_alloc(struct scsi_device *sdev)
920 {
921 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
922
923 if (!rport || fc_remote_port_chkready(rport))
924 return -ENXIO;
925
926 sdev->hostdata = rport->dd_data;
927
928 return 0;
929 }
930
931 void
932 bfad_os_fc_host_init(struct bfad_im_port_s *im_port)
933 {
934 struct Scsi_Host *host = im_port->shost;
935 struct bfad_s *bfad = im_port->bfad;
936 struct bfad_port_s *port = im_port->port;
937 struct bfa_pport_attr_s pattr;
938 char model[BFA_ADAPTER_MODEL_NAME_LEN];
939 char fw_ver[BFA_VERSION_LEN];
940
941 fc_host_node_name(host) =
942 bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port)));
943 fc_host_port_name(host) =
944 bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port)));
945 fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
946
947 fc_host_supported_classes(host) = FC_COS_CLASS3;
948
949 memset(fc_host_supported_fc4s(host), 0,
950 sizeof(fc_host_supported_fc4s(host)));
951 if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM))
952 /* For FCP type 0x08 */
953 fc_host_supported_fc4s(host)[2] = 1;
954 if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC)
955 /* For LLC/SNAP type 0x05 */
956 fc_host_supported_fc4s(host)[3] = 0x20;
957 /* For fibre channel services type 0x20 */
958 fc_host_supported_fc4s(host)[7] = 1;
959
960 bfa_get_adapter_model(&bfad->bfa, model);
961 bfa_get_adapter_fw_ver(&bfad->bfa, fw_ver);
962 sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s",
963 model, fw_ver, BFAD_DRIVER_VERSION);
964
965 fc_host_supported_speeds(host) = 0;
966 fc_host_supported_speeds(host) |=
967 FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
968 FC_PORTSPEED_1GBIT;
969
970 bfa_fcport_get_attr(&bfad->bfa, &pattr);
971 fc_host_maxframe_size(host) = pattr.pport_cfg.maxfrsize;
972 }
973
974 static void
975 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
976 {
977 struct fc_rport_identifiers rport_ids;
978 struct fc_rport *fc_rport;
979 struct bfad_itnim_data_s *itnim_data;
980
981 rport_ids.node_name =
982 bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
983 rport_ids.port_name =
984 bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
985 rport_ids.port_id =
986 bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
987 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
988
989 itnim->fc_rport = fc_rport =
990 fc_remote_port_add(im_port->shost, 0, &rport_ids);
991
992 if (!fc_rport)
993 return;
994
995 fc_rport->maxframe_size =
996 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
997 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
998
999 itnim_data = fc_rport->dd_data;
1000 itnim_data->itnim = itnim;
1001
1002 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1003
1004 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1005 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1006
1007 if ((fc_rport->scsi_target_id != -1)
1008 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1009 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1010
1011 return;
1012 }
1013
1014 /**
1015 * Work queue handler using FC transport service
1016 * Context: kernel
1017 */
1018 static void
1019 bfad_im_itnim_work_handler(struct work_struct *work)
1020 {
1021 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1022 itnim_work);
1023 struct bfad_im_s *im = itnim->im;
1024 struct bfad_s *bfad = im->bfad;
1025 struct bfad_im_port_s *im_port;
1026 unsigned long flags;
1027 struct fc_rport *fc_rport;
1028 wwn_t wwpn;
1029 u32 fcid;
1030 char wwpn_str[32], fcid_str[16];
1031
1032 spin_lock_irqsave(&bfad->bfad_lock, flags);
1033 im_port = itnim->im_port;
1034 bfa_trc(bfad, itnim->state);
1035 switch (itnim->state) {
1036 case ITNIM_STATE_ONLINE:
1037 if (!itnim->fc_rport) {
1038 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1039 bfad_im_fc_rport_add(im_port, itnim);
1040 spin_lock_irqsave(&bfad->bfad_lock, flags);
1041 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1042 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1043 wwn2str(wwpn_str, wwpn);
1044 fcid2str(fcid_str, fcid);
1045 list_add_tail(&itnim->list_entry,
1046 &im_port->itnim_mapped_list);
1047 bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE,
1048 im_port->shost->host_no,
1049 itnim->scsi_tgt_id,
1050 fcid_str, wwpn_str);
1051 } else {
1052 printk(KERN_WARNING
1053 "%s: itnim %llx is already in online state\n",
1054 __func__,
1055 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1056 }
1057
1058 break;
1059 case ITNIM_STATE_OFFLINE_PENDING:
1060 itnim->state = ITNIM_STATE_OFFLINE;
1061 if (itnim->fc_rport) {
1062 fc_rport = itnim->fc_rport;
1063 ((struct bfad_itnim_data_s *)
1064 fc_rport->dd_data)->itnim = NULL;
1065 itnim->fc_rport = NULL;
1066 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1067 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1068 fc_rport->dev_loss_tmo =
1069 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1070 fc_remote_port_delete(fc_rport);
1071 spin_lock_irqsave(&bfad->bfad_lock, flags);
1072 }
1073 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1074 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1075 wwn2str(wwpn_str, wwpn);
1076 fcid2str(fcid_str, fcid);
1077 list_del(&itnim->list_entry);
1078 bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE,
1079 im_port->shost->host_no,
1080 itnim->scsi_tgt_id,
1081 fcid_str, wwpn_str);
1082 }
1083 break;
1084 case ITNIM_STATE_FREE:
1085 if (itnim->fc_rport) {
1086 fc_rport = itnim->fc_rport;
1087 ((struct bfad_itnim_data_s *)
1088 fc_rport->dd_data)->itnim = NULL;
1089 itnim->fc_rport = NULL;
1090 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1091 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1092 fc_rport->dev_loss_tmo =
1093 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1094 fc_remote_port_delete(fc_rport);
1095 spin_lock_irqsave(&bfad->bfad_lock, flags);
1096 }
1097 list_del(&itnim->list_entry);
1098 }
1099
1100 kfree(itnim);
1101 break;
1102 default:
1103 bfa_assert(0);
1104 break;
1105 }
1106
1107 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1108 }
1109
1110 /**
1111 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1112 */
1113 static int
1114 bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1115 {
1116 struct bfad_im_port_s *im_port =
1117 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1118 struct bfad_s *bfad = im_port->bfad;
1119 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1120 struct bfad_itnim_s *itnim;
1121 struct bfa_ioim_s *hal_io;
1122 unsigned long flags;
1123 int rc;
1124 s16 sg_cnt = 0;
1125 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1126
1127 rc = fc_remote_port_chkready(rport);
1128 if (rc) {
1129 cmnd->result = rc;
1130 done(cmnd);
1131 return 0;
1132 }
1133
1134 sg_cnt = scsi_dma_map(cmnd);
1135
1136 if (sg_cnt < 0)
1137 return SCSI_MLQUEUE_HOST_BUSY;
1138
1139 cmnd->scsi_done = done;
1140
1141 spin_lock_irqsave(&bfad->bfad_lock, flags);
1142 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1143 printk(KERN_WARNING
1144 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1145 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1146 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1147 goto out_fail_cmd;
1148 }
1149
1150 itnim = itnim_data->itnim;
1151 if (!itnim) {
1152 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1153 goto out_fail_cmd;
1154 }
1155
1156 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1157 itnim->bfa_itnim, sg_cnt);
1158 if (!hal_io) {
1159 printk(KERN_WARNING "hal_io failure\n");
1160 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1161 scsi_dma_unmap(cmnd);
1162 return SCSI_MLQUEUE_HOST_BUSY;
1163 }
1164
1165 cmnd->host_scribble = (char *)hal_io;
1166 bfa_trc_fp(bfad, hal_io->iotag);
1167 bfa_ioim_start(hal_io);
1168 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1169
1170 return 0;
1171
1172 out_fail_cmd:
1173 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1174 scsi_dma_unmap(cmnd);
1175 if (done)
1176 done(cmnd);
1177
1178 return 0;
1179 }
1180
1181 void
1182 bfad_os_rport_online_wait(struct bfad_s *bfad)
1183 {
1184 int i;
1185 int rport_delay = 10;
1186
1187 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1188 && i < bfa_linkup_delay; i++)
1189 schedule_timeout_uninterruptible(HZ);
1190
1191 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1192 rport_delay = rport_delay < bfa_linkup_delay ?
1193 rport_delay : bfa_linkup_delay;
1194 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1195 && i < rport_delay; i++)
1196 schedule_timeout_uninterruptible(HZ);
1197
1198 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE))
1199 schedule_timeout_uninterruptible(rport_delay * HZ);
1200 }
1201 }
1202
1203 int
1204 bfad_os_get_linkup_delay(struct bfad_s *bfad)
1205 {
1206
1207 u8 nwwns = 0;
1208 wwn_t *wwns;
1209 int ldelay;
1210
1211 /*
1212 * Querying for the boot target port wwns
1213 * -- read from boot information in flash.
1214 * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30
1215 * else => local boot machine set bfa_linkup_delay = 10
1216 */
1217
1218 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, &wwns);
1219
1220 if (nwwns > 0) {
1221 /* If boot over SAN; linkup_delay = 30sec */
1222 ldelay = 30;
1223 } else {
1224 /* If local boot; linkup_delay = 10sec */
1225 ldelay = 0;
1226 }
1227
1228 return ldelay;
1229 }
1230
1231
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree