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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit...
[people/arne_f/kernel.git] / drivers / scsi / bfa / bfad_im.c
CommitLineData
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
29BFA_TRC_FILE(LDRV, IM);
30
31DEFINE_IDR(bfad_im_port_index);
32struct scsi_transport_template *bfad_im_scsi_transport_template;
33static void bfad_im_itnim_work_handler(struct work_struct *work);
34static int bfad_im_queuecommand(struct scsi_cmnd *cmnd,
35 void (*done)(struct scsi_cmnd *));
36static int bfad_im_slave_alloc(struct scsi_device *sdev);
37
38void
39bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
40 enum bfi_ioim_status io_status, u8 scsi_status,
41 int sns_len, u8 *sns_info, s32 residue)
42{
43 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
44 struct bfad_s *bfad = drv;
45 struct bfad_itnim_data_s *itnim_data;
46 struct bfad_itnim_s *itnim;
95aa060d 47 u8 host_status = DID_OK;
7725ccfd
JH		 48
49 switch (io_status) {
50 case BFI_IOIM_STS_OK:
51 bfa_trc(bfad, scsi_status);
7725ccfd
JH		 52 scsi_set_resid(cmnd, 0);
53
54 if (sns_len > 0) {
55 bfa_trc(bfad, sns_len);
56 if (sns_len > SCSI_SENSE_BUFFERSIZE)
57 sns_len = SCSI_SENSE_BUFFERSIZE;
58 memcpy(cmnd->sense_buffer, sns_info, sns_len);
59 }
95aa060d
KG		 60 if (residue > 0) {
61 bfa_trc(bfad, residue);
7725ccfd 62 scsi_set_resid(cmnd, residue);
95aa060d
KG		 63 if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
64 (scsi_bufflen(cmnd) - residue) <
65 cmnd->underflow) {
66 bfa_trc(bfad, 0);
67 host_status = DID_ERROR;
68 }
69 }
70 cmnd->result = ScsiResult(host_status, scsi_status);
71
7725ccfd
JH		 72 break;
73
74 case BFI_IOIM_STS_ABORTED:
75 case BFI_IOIM_STS_TIMEDOUT:
76 case BFI_IOIM_STS_PATHTOV:
77 default:
78 cmnd->result = ScsiResult(DID_ERROR, 0);
79 }
80
81 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
82 if (cmnd->device->host != NULL)
83 scsi_dma_unmap(cmnd);
84
85 cmnd->host_scribble = NULL;
86 bfa_trc(bfad, cmnd->result);
87
88 itnim_data = cmnd->device->hostdata;
89 if (itnim_data) {
90 itnim = itnim_data->itnim;
91 if (!cmnd->result && itnim &&
92 (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
93 /* Queue depth adjustment for good status completion */
94 bfad_os_ramp_up_qdepth(itnim, cmnd->device);
95 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
96 /* qfull handling */
97 bfad_os_handle_qfull(itnim, cmnd->device);
98 }
99 }
100
101 cmnd->scsi_done(cmnd);
102}
103
104void
105bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
106{
107 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
108 struct bfad_itnim_data_s *itnim_data;
109 struct bfad_itnim_s *itnim;
110
111 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD);
112
113 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
114 if (cmnd->device->host != NULL)
115 scsi_dma_unmap(cmnd);
116
117 cmnd->host_scribble = NULL;
118
119 /* Queue depth adjustment */
120 if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
121 itnim_data = cmnd->device->hostdata;
122 if (itnim_data) {
123 itnim = itnim_data->itnim;
124 if (itnim)
125 bfad_os_ramp_up_qdepth(itnim, cmnd->device);
126 }
127 }
128
129 cmnd->scsi_done(cmnd);
130}
131
132void
133bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
134{
135 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
136 struct bfad_s *bfad = drv;
137
138 cmnd->result = ScsiResult(DID_ERROR, 0);
139
140 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
141 if (cmnd->device->host != NULL)
142 scsi_dma_unmap(cmnd);
143
144 bfa_trc(bfad, cmnd->result);
145 cmnd->host_scribble = NULL;
146}
147
148void
149bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
150 enum bfi_tskim_status tsk_status)
151{
152 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
153 wait_queue_head_t *wq;
154
155 cmnd->SCp.Status |= tsk_status << 1;
156 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
157 wq = (wait_queue_head_t *) cmnd->SCp.ptr;
158 cmnd->SCp.ptr = NULL;
159
160 if (wq)
161 wake_up(wq);
162}
163
164void
165bfa_cb_ioim_resfree(void *drv)
166{
167}
168
169/**
170 * Scsi_Host_template SCSI host template
171 */
172/**
173 * Scsi_Host template entry, returns BFAD PCI info.
174 */
175static const char *
176bfad_im_info(struct Scsi_Host *shost)
177{
178 static char bfa_buf[256];
179 struct bfad_im_port_s *im_port =
180 (struct bfad_im_port_s *) shost->hostdata[0];
7725ccfd 181 struct bfad_s *bfad = im_port->bfad;
0a4b1fc0 182 char model[BFA_ADAPTER_MODEL_NAME_LEN];
7725ccfd 183
0a4b1fc0 184 bfa_get_adapter_model(&bfad->bfa, model);
7725ccfd
JH		 185
186 memset(bfa_buf, 0, sizeof(bfa_buf));
187 snprintf(bfa_buf, sizeof(bfa_buf),
0a4b1fc0
KG		 188 "Brocade FC/FCOE Adapter, " "model: %s hwpath: %s driver: %s",
189 model, bfad->pci_name, BFAD_DRIVER_VERSION);
7725ccfd
JH		 190 return bfa_buf;
191}
192
193/**
194 * Scsi_Host template entry, aborts the specified SCSI command.
195 *
196 * Returns: SUCCESS or FAILED.
197 */
198static int
199bfad_im_abort_handler(struct scsi_cmnd *cmnd)
200{
201 struct Scsi_Host *shost = cmnd->device->host;
202 struct bfad_im_port_s *im_port =
203 (struct bfad_im_port_s *) shost->hostdata[0];
204 struct bfad_s *bfad = im_port->bfad;
205 struct bfa_ioim_s *hal_io;
206 unsigned long flags;
207 u32 timeout;
208 int rc = FAILED;
209
210 spin_lock_irqsave(&bfad->bfad_lock, flags);
211 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
212 if (!hal_io) {
213 /* IO has been completed, retrun success */
214 rc = SUCCESS;
215 goto out;
216 }
217 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
218 rc = FAILED;
219 goto out;
220 }
221
222 bfa_trc(bfad, hal_io->iotag);
223 bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT,
224 im_port->shost->host_no, cmnd, hal_io->iotag);
225 bfa_ioim_abort(hal_io);
226 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
227
228 /* Need to wait until the command get aborted */
229 timeout = 10;
230 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
231 set_current_state(TASK_UNINTERRUPTIBLE);
232 schedule_timeout(timeout);
233 if (timeout < 4 * HZ)
234 timeout *= 2;
235 }
236
237 cmnd->scsi_done(cmnd);
238 bfa_trc(bfad, hal_io->iotag);
239 bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_ABORT_COMP,
240 im_port->shost->host_no, cmnd, hal_io->iotag);
241 return SUCCESS;
242out:
243 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
244 return rc;
245}
246
247static bfa_status_t
248bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
249 struct bfad_itnim_s *itnim)
250{
251 struct bfa_tskim_s *tskim;
252 struct bfa_itnim_s *bfa_itnim;
253 bfa_status_t rc = BFA_STATUS_OK;
254
255 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
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);
273out:
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 */
283static int
284bfad_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
339out:
340 return rc;
341}
342
343/**
344 * Scsi_Host template entry, resets the bus and abort all commands.
345 */
346static int
347bfad_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 */
396static void
397bfad_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 */
411void
412bfa_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 */
434void
435bfa_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 */
467void
468bfa_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 */
484void
485bfa_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 */
507void 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 */
515int
516bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
517{
518 int error = 1;
519
520 if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) {
521 printk(KERN_WARNING "idr_pre_get failure\n");
522 goto out;
523 }
524
525 error = idr_get_new(&bfad_im_port_index, im_port,
526 &im_port->idr_id);
527 if (error) {
528 printk(KERN_WARNING "idr_get_new failure\n");
529 goto out;
530 }
531
532 im_port->shost = bfad_os_scsi_host_alloc(im_port, bfad);
533 if (!im_port->shost) {
534 error = 1;
535 goto out_free_idr;
536 }
537
538 im_port->shost->hostdata[0] = (unsigned long)im_port;
539 im_port->shost->unique_id = im_port->idr_id;
540 im_port->shost->this_id = -1;
541 im_port->shost->max_id = MAX_FCP_TARGET;
542 im_port->shost->max_lun = MAX_FCP_LUN;
543 im_port->shost->max_cmd_len = 16;
544 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
545 im_port->shost->transportt = bfad_im_scsi_transport_template;
546
547 error = bfad_os_scsi_add_host(im_port->shost, im_port, bfad);
548 if (error) {
549 printk(KERN_WARNING "bfad_os_scsi_add_host failure %d\n",
550 error);
551 goto out_fc_rel;
552 }
553
554 /* setup host fixed attribute if the lk supports */
555 bfad_os_fc_host_init(im_port);
556
557 return 0;
558
559out_fc_rel:
560 scsi_host_put(im_port->shost);
561out_free_idr:
562 idr_remove(&bfad_im_port_index, im_port->idr_id);
563out:
564 return error;
565}
566
567void
568bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
569{
570 unsigned long flags;
571
572 bfa_trc(bfad, bfad->inst_no);
573 bfa_log(bfad->logmod, BFA_LOG_LINUX_SCSI_HOST_FREE,
574 im_port->shost->host_no);
575
576 fc_remove_host(im_port->shost);
577
578 scsi_remove_host(im_port->shost);
579 scsi_host_put(im_port->shost);
580
581 spin_lock_irqsave(&bfad->bfad_lock, flags);
582 idr_remove(&bfad_im_port_index, im_port->idr_id);
583 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
584}
585
586static void
587bfad_im_port_delete_handler(struct work_struct *work)
588{
589 struct bfad_im_port_s *im_port =
590 container_of(work, struct bfad_im_port_s, port_delete_work);
591
592 bfad_im_scsi_host_free(im_port->bfad, im_port);
593 bfad_im_port_clean(im_port);
594 kfree(im_port);
595}
596
597bfa_status_t
598bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
599{
600 int rc = BFA_STATUS_OK;
601 struct bfad_im_port_s *im_port;
602
603 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
604 if (im_port == NULL) {
605 rc = BFA_STATUS_ENOMEM;
606 goto ext;
607 }
608 port->im_port = im_port;
609 im_port->port = port;
610 im_port->bfad = bfad;
611
612 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
613 INIT_LIST_HEAD(&im_port->itnim_mapped_list);
614 INIT_LIST_HEAD(&im_port->binding_list);
615
616ext:
617 return rc;
618}
619
620void
621bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
622{
623 struct bfad_im_port_s *im_port = port->im_port;
624
625 queue_work(bfad->im->drv_workq,
626 &im_port->port_delete_work);
627}
628
629void
630bfad_im_port_clean(struct bfad_im_port_s *im_port)
631{
632 struct bfad_fcp_binding *bp, *bp_new;
633 unsigned long flags;
634 struct bfad_s *bfad = im_port->bfad;
635
636 spin_lock_irqsave(&bfad->bfad_lock, flags);
637 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
638 list_entry) {
639 list_del(&bp->list_entry);
640 kfree(bp);
641 }
642
643 /* the itnim_mapped_list must be empty at this time */
644 bfa_assert(list_empty(&im_port->itnim_mapped_list));
645
646 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
647}
648
649void
650bfad_im_port_online(struct bfad_s *bfad, struct bfad_port_s *port)
651{
652}
653
654void
655bfad_im_port_offline(struct bfad_s *bfad, struct bfad_port_s *port)
656{
657}
658
659bfa_status_t
660bfad_im_probe(struct bfad_s *bfad)
661{
662 struct bfad_im_s *im;
663 bfa_status_t rc = BFA_STATUS_OK;
664
665 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
666 if (im == NULL) {
667 rc = BFA_STATUS_ENOMEM;
668 goto ext;
669 }
670
671 bfad->im = im;
672 im->bfad = bfad;
673
674 if (bfad_os_thread_workq(bfad) != BFA_STATUS_OK) {
675 kfree(im);
676 rc = BFA_STATUS_FAILED;
677 }
678
679ext:
680 return rc;
681}
682
683void
684bfad_im_probe_undo(struct bfad_s *bfad)
685{
686 if (bfad->im) {
687 bfad_os_destroy_workq(bfad->im);
688 kfree(bfad->im);
689 bfad->im = NULL;
690 }
691}
692
693
694
695
696int
697bfad_os_scsi_add_host(struct Scsi_Host *shost, struct bfad_im_port_s *im_port,
698 struct bfad_s *bfad)
699{
700 struct device *dev;
701
702 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
703 dev = &bfad->pcidev->dev;
704 else
705 dev = &bfad->pport.im_port->shost->shost_gendev;
706
707 return scsi_add_host(shost, dev);
708}
709
710struct Scsi_Host *
711bfad_os_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
712{
713 struct scsi_host_template *sht;
714
715 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
716 sht = &bfad_im_scsi_host_template;
717 else
718 sht = &bfad_im_vport_template;
719
720 sht->sg_tablesize = bfad->cfg_data.io_max_sge;
721
722 return scsi_host_alloc(sht, sizeof(unsigned long));
723}
724
725void
726bfad_os_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
727{
728 flush_workqueue(bfad->im->drv_workq);
729 bfad_im_scsi_host_free(im_port->bfad, im_port);
730 bfad_im_port_clean(im_port);
731 kfree(im_port);
732}
733
734void
735bfad_os_destroy_workq(struct bfad_im_s *im)
736{
737 if (im && im->drv_workq) {
738 destroy_workqueue(im->drv_workq);
739 im->drv_workq = NULL;
740 }
741}
742
743bfa_status_t
744bfad_os_thread_workq(struct bfad_s *bfad)
745{
746 struct bfad_im_s *im = bfad->im;
747
748 bfa_trc(bfad, 0);
749 snprintf(im->drv_workq_name, BFAD_KOBJ_NAME_LEN, "bfad_wq_%d",
750 bfad->inst_no);
751 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
752 if (!im->drv_workq)
753 return BFA_STATUS_FAILED;
754
755 return BFA_STATUS_OK;
756}
757
758/**
759 * Scsi_Host template entry.
760 *
761 * Description:
762 * OS entry point to adjust the queue_depths on a per-device basis.
763 * Called once per device during the bus scan.
764 * Return non-zero if fails.
765 */
766static int
767bfad_im_slave_configure(struct scsi_device *sdev)
768{
769 if (sdev->tagged_supported)
770 scsi_activate_tcq(sdev, bfa_lun_queue_depth);
771 else
772 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth);
773
774 return 0;
775}
776
777struct scsi_host_template bfad_im_scsi_host_template = {
778 .module = THIS_MODULE,
779 .name = BFAD_DRIVER_NAME,
780 .info = bfad_im_info,
781 .queuecommand = bfad_im_queuecommand,
782 .eh_abort_handler = bfad_im_abort_handler,
783 .eh_device_reset_handler = bfad_im_reset_lun_handler,
784 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
785
786 .slave_alloc = bfad_im_slave_alloc,
787 .slave_configure = bfad_im_slave_configure,
788 .slave_destroy = bfad_im_slave_destroy,
789
790 .this_id = -1,
791 .sg_tablesize = BFAD_IO_MAX_SGE,
792 .cmd_per_lun = 3,
793 .use_clustering = ENABLE_CLUSTERING,
794 .shost_attrs = bfad_im_host_attrs,
795 .max_sectors = 0xFFFF,
796};
797
798struct scsi_host_template bfad_im_vport_template = {
799 .module = THIS_MODULE,
800 .name = BFAD_DRIVER_NAME,
801 .info = bfad_im_info,
802 .queuecommand = bfad_im_queuecommand,
803 .eh_abort_handler = bfad_im_abort_handler,
804 .eh_device_reset_handler = bfad_im_reset_lun_handler,
805 .eh_bus_reset_handler = bfad_im_reset_bus_handler,
806
807 .slave_alloc = bfad_im_slave_alloc,
808 .slave_configure = bfad_im_slave_configure,
809 .slave_destroy = bfad_im_slave_destroy,
810
811 .this_id = -1,
812 .sg_tablesize = BFAD_IO_MAX_SGE,
813 .cmd_per_lun = 3,
814 .use_clustering = ENABLE_CLUSTERING,
815 .shost_attrs = bfad_im_vport_attrs,
816 .max_sectors = 0xFFFF,
817};
818
819void
820bfad_im_probe_post(struct bfad_im_s *im)
821{
822 flush_workqueue(im->drv_workq);
823}
824
825bfa_status_t
826bfad_im_module_init(void)
827{
828 bfad_im_scsi_transport_template =
829 fc_attach_transport(&bfad_im_fc_function_template);
830 if (!bfad_im_scsi_transport_template)
831 return BFA_STATUS_ENOMEM;
832
833 return BFA_STATUS_OK;
834}
835
836void
837bfad_im_module_exit(void)
838{
839 if (bfad_im_scsi_transport_template)
840 fc_release_transport(bfad_im_scsi_transport_template);
841}
842
843void
844bfad_os_itnim_process(struct bfad_itnim_s *itnim_drv)
845{
846 struct bfad_im_s *im = itnim_drv->im;
847
848 if (itnim_drv->queue_work)
849 queue_work(im->drv_workq, &itnim_drv->itnim_work);
850}
851
852void
853bfad_os_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
854{
855 struct scsi_device *tmp_sdev;
856
857 if (((jiffies - itnim->last_ramp_up_time) >
858 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
859 ((jiffies - itnim->last_queue_full_time) >
860 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
861 shost_for_each_device(tmp_sdev, sdev->host) {
862 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
863 if (tmp_sdev->id != sdev->id)
864 continue;
865 if (tmp_sdev->ordered_tags)
866 scsi_adjust_queue_depth(tmp_sdev,
867 MSG_ORDERED_TAG,
868 tmp_sdev->queue_depth + 1);
869 else
870 scsi_adjust_queue_depth(tmp_sdev,
871 MSG_SIMPLE_TAG,
872 tmp_sdev->queue_depth + 1);
873
874 itnim->last_ramp_up_time = jiffies;
875 }
876 }
877 }
878}
879
880void
881bfad_os_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
882{
883 struct scsi_device *tmp_sdev;
884
885 itnim->last_queue_full_time = jiffies;
886
887 shost_for_each_device(tmp_sdev, sdev->host) {
888 if (tmp_sdev->id != sdev->id)
889 continue;
890 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
891 }
892}
893
894
895
896
897struct bfad_itnim_s *
898bfad_os_get_itnim(struct bfad_im_port_s *im_port, int id)
899{
900 struct bfad_itnim_s *itnim = NULL;
901
902 /* Search the mapped list for this target ID */
903 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
904 if (id == itnim->scsi_tgt_id)
905 return itnim;
906 }
907
908 return NULL;
909}
910
911/**
912 * Scsi_Host template entry slave_alloc
913 */
914static int
915bfad_im_slave_alloc(struct scsi_device *sdev)
916{
917 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
918
919 if (!rport || fc_remote_port_chkready(rport))
920 return -ENXIO;
921
922 sdev->hostdata = rport->dd_data;
923
924 return 0;
925}
926
927void
928bfad_os_fc_host_init(struct bfad_im_port_s *im_port)
929{
930 struct Scsi_Host *host = im_port->shost;
931 struct bfad_s *bfad = im_port->bfad;
932 struct bfad_port_s *port = im_port->port;
0a4b1fc0
KG		 933 struct bfa_pport_attr_s pattr;
934 char model[BFA_ADAPTER_MODEL_NAME_LEN];
935 char fw_ver[BFA_VERSION_LEN];
7725ccfd
JH		 936
937 fc_host_node_name(host) =
938 bfa_os_htonll((bfa_fcs_port_get_nwwn(port->fcs_port)));
939 fc_host_port_name(host) =
940 bfa_os_htonll((bfa_fcs_port_get_pwwn(port->fcs_port)));
941
942 fc_host_supported_classes(host) = FC_COS_CLASS3;
943
944 memset(fc_host_supported_fc4s(host), 0,
945 sizeof(fc_host_supported_fc4s(host)));
946 if (bfad_supported_fc4s & (BFA_PORT_ROLE_FCP_IM | BFA_PORT_ROLE_FCP_TM))
947 /* For FCP type 0x08 */
948 fc_host_supported_fc4s(host)[2] = 1;
7542fa72 949 if (bfad_supported_fc4s & BFA_PORT_ROLE_FCP_IPFC)
7725ccfd
JH		 950 /* For LLC/SNAP type 0x05 */
951 fc_host_supported_fc4s(host)[3] = 0x20;
952 /* For fibre channel services type 0x20 */
953 fc_host_supported_fc4s(host)[7] = 1;
954
0a4b1fc0
KG		 955 bfa_get_adapter_model(&bfad->bfa, model);
956 bfa_get_adapter_fw_ver(&bfad->bfa, fw_ver);
7725ccfd 957 sprintf(fc_host_symbolic_name(host), "Brocade %s FV%s DV%s",
0a4b1fc0 958 model, fw_ver, BFAD_DRIVER_VERSION);
7725ccfd
JH		 959
960 fc_host_supported_speeds(host) = 0;
961 fc_host_supported_speeds(host) |=
962 FC_PORTSPEED_8GBIT | FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
963 FC_PORTSPEED_1GBIT;
964
0a4b1fc0
KG		 965 bfa_fcport_get_attr(&bfad->bfa, &pattr);
966 fc_host_maxframe_size(host) = pattr.pport_cfg.maxfrsize;
7725ccfd
JH		 967}
968
969static void
970bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
971{
972 struct fc_rport_identifiers rport_ids;
973 struct fc_rport *fc_rport;
974 struct bfad_itnim_data_s *itnim_data;
975
976 rport_ids.node_name =
977 bfa_os_htonll(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
978 rport_ids.port_name =
979 bfa_os_htonll(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
980 rport_ids.port_id =
981 bfa_os_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
982 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
983
984 itnim->fc_rport = fc_rport =
985 fc_remote_port_add(im_port->shost, 0, &rport_ids);
986
987 if (!fc_rport)
988 return;
989
990 fc_rport->maxframe_size =
991 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
992 fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
993
994 itnim_data = fc_rport->dd_data;
995 itnim_data->itnim = itnim;
996
997 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
998
999 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1000 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1001
1002 if ((fc_rport->scsi_target_id != -1)
1003 && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1004 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1005
1006 return;
1007}
1008
1009/**
1010 * Work queue handler using FC transport service
1011* Context: kernel
1012 */
1013static void
1014bfad_im_itnim_work_handler(struct work_struct *work)
1015{
1016 struct bfad_itnim_s *itnim = container_of(work, struct bfad_itnim_s,
1017 itnim_work);
1018 struct bfad_im_s *im = itnim->im;
1019 struct bfad_s *bfad = im->bfad;
1020 struct bfad_im_port_s *im_port;
1021 unsigned long flags;
1022 struct fc_rport *fc_rport;
1023 wwn_t wwpn;
1024 u32 fcid;
1025 char wwpn_str[32], fcid_str[16];
1026
1027 spin_lock_irqsave(&bfad->bfad_lock, flags);
1028 im_port = itnim->im_port;
1029 bfa_trc(bfad, itnim->state);
1030 switch (itnim->state) {
1031 case ITNIM_STATE_ONLINE:
1032 if (!itnim->fc_rport) {
1033 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1034 bfad_im_fc_rport_add(im_port, itnim);
1035 spin_lock_irqsave(&bfad->bfad_lock, flags);
1036 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1037 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1038 wwn2str(wwpn_str, wwpn);
1039 fcid2str(fcid_str, fcid);
1040 list_add_tail(&itnim->list_entry,
1041 &im_port->itnim_mapped_list);
1042 bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_ONLINE,
1043 im_port->shost->host_no,
1044 itnim->scsi_tgt_id,
1045 fcid_str, wwpn_str);
1046 } else {
1047 printk(KERN_WARNING
1048 "%s: itnim %llx is already in online state\n",
f8ceafde 1049 __func__,
7725ccfd
JH		 1050 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1051 }
1052
1053 break;
1054 case ITNIM_STATE_OFFLINE_PENDING:
1055 itnim->state = ITNIM_STATE_OFFLINE;
1056 if (itnim->fc_rport) {
1057 fc_rport = itnim->fc_rport;
1058 ((struct bfad_itnim_data_s *)
1059 fc_rport->dd_data)->itnim = NULL;
1060 itnim->fc_rport = NULL;
1061 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1062 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1063 fc_rport->dev_loss_tmo =
1064 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1065 fc_remote_port_delete(fc_rport);
1066 spin_lock_irqsave(&bfad->bfad_lock, flags);
1067 }
1068 wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1069 fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1070 wwn2str(wwpn_str, wwpn);
1071 fcid2str(fcid_str, fcid);
1072 list_del(&itnim->list_entry);
1073 bfa_log(bfad->logmod, BFA_LOG_LINUX_ITNIM_OFFLINE,
1074 im_port->shost->host_no,
1075 itnim->scsi_tgt_id,
1076 fcid_str, wwpn_str);
1077 }
1078 break;
1079 case ITNIM_STATE_FREE:
1080 if (itnim->fc_rport) {
1081 fc_rport = itnim->fc_rport;
1082 ((struct bfad_itnim_data_s *)
1083 fc_rport->dd_data)->itnim = NULL;
1084 itnim->fc_rport = NULL;
1085 if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1086 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1087 fc_rport->dev_loss_tmo =
1088 bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1089 fc_remote_port_delete(fc_rport);
1090 spin_lock_irqsave(&bfad->bfad_lock, flags);
1091 }
1092 list_del(&itnim->list_entry);
1093 }
1094
1095 kfree(itnim);
1096 break;
1097 default:
1098 bfa_assert(0);
1099 break;
1100 }
1101
1102 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1103}
1104
1105/**
1106 * Scsi_Host template entry, queue a SCSI command to the BFAD.
1107 */
1108static int
1109bfad_im_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1110{
1111 struct bfad_im_port_s *im_port =
1112 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1113 struct bfad_s *bfad = im_port->bfad;
1114 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1115 struct bfad_itnim_s *itnim;
1116 struct bfa_ioim_s *hal_io;
1117 unsigned long flags;
1118 int rc;
1119 s16 sg_cnt = 0;
1120 struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1121
1122 rc = fc_remote_port_chkready(rport);
1123 if (rc) {
1124 cmnd->result = rc;
1125 done(cmnd);
1126 return 0;
1127 }
1128
1129 sg_cnt = scsi_dma_map(cmnd);
1130
1131 if (sg_cnt < 0)
1132 return SCSI_MLQUEUE_HOST_BUSY;
1133
1134 cmnd->scsi_done = done;
1135
1136 spin_lock_irqsave(&bfad->bfad_lock, flags);
1137 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1138 printk(KERN_WARNING
1139 "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1140 bfad->inst_no, cmnd, cmnd->cmnd[0]);
1141 cmnd->result = ScsiResult(DID_NO_CONNECT, 0);
1142 goto out_fail_cmd;
1143 }
1144
1145 itnim = itnim_data->itnim;
1146 if (!itnim) {
1147 cmnd->result = ScsiResult(DID_IMM_RETRY, 0);
1148 goto out_fail_cmd;
1149 }
1150
1151 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1152 itnim->bfa_itnim, sg_cnt);
1153 if (!hal_io) {
1154 printk(KERN_WARNING "hal_io failure\n");
1155 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1156 scsi_dma_unmap(cmnd);
1157 return SCSI_MLQUEUE_HOST_BUSY;
1158 }
1159
1160 cmnd->host_scribble = (char *)hal_io;
1161 bfa_trc_fp(bfad, hal_io->iotag);
1162 bfa_ioim_start(hal_io);
1163 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1164
1165 return 0;
1166
1167out_fail_cmd:
1168 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1169 scsi_dma_unmap(cmnd);
1170 if (done)
1171 done(cmnd);
1172
1173 return 0;
1174}
1175
1176void
1177bfad_os_rport_online_wait(struct bfad_s *bfad)
1178{
1179 int i;
1180 int rport_delay = 10;
1181
1182 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1183 && i < bfa_linkup_delay; i++)
1184 schedule_timeout_uninterruptible(HZ);
1185
1186 if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1187 rport_delay = rport_delay < bfa_linkup_delay ?
1188 rport_delay : bfa_linkup_delay;
1189 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1190 && i < rport_delay; i++)
1191 schedule_timeout_uninterruptible(HZ);
1192
1193 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE))
1194 schedule_timeout_uninterruptible(rport_delay * HZ);
1195 }
1196}
1197
1198int
1199bfad_os_get_linkup_delay(struct bfad_s *bfad)
1200{
1201
1202 u8 nwwns = 0;
1203 wwn_t *wwns;
1204 int ldelay;
1205
1206 /*
1207 * Querying for the boot target port wwns
1208 * -- read from boot information in flash.
1209 * If nwwns > 0 => boot over SAN and set bfa_linkup_delay = 30
1210 * else => local boot machine set bfa_linkup_delay = 10
1211 */
1212
1213 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, &wwns);
1214
1215 if (nwwns > 0) {
1216 /* If boot over SAN; linkup_delay = 30sec */
1217 ldelay = 30;
1218 } else {
1219 /* If local boot; linkup_delay = 10sec */
1220 ldelay = 0;
1221 }
1222
1223 return ldelay;
1224}
1225
1226
Arne's tree of linux kernel.