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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Driver for Broadcom MPI3 Storage Controllers
4 *
5 * Copyright (C) 2017-2021 Broadcom Inc.
6 * (mailto: mpi3mr-linuxdrv.pdl@broadcom.com)
7 *
8 */
9
10#include "mpi3mr.h"
11
12/* global driver scop variables */
13LIST_HEAD(mrioc_list);
14DEFINE_SPINLOCK(mrioc_list_lock);
15static int mrioc_ids;
16static int warn_non_secure_ctlr;
17
18MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR);
19MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC);
20MODULE_LICENSE(MPI3MR_DRIVER_LICENSE);
21MODULE_VERSION(MPI3MR_DRIVER_VERSION);
22
23/* Module parameters*/
24int prot_mask = -1;
25module_param(prot_mask, int, 0);
26MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07");
27
28static int prot_guard_mask = 3;
29module_param(prot_guard_mask, int, 0);
30MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3");
31static int logging_level;
32module_param(logging_level, int, 0);
33MODULE_PARM_DESC(logging_level,
34 " bits for enabling additional logging info (default=0)");
35
36/* Forward declarations*/
37/**
38 * mpi3mr_host_tag_for_scmd - Get host tag for a scmd
39 * @mrioc: Adapter instance reference
40 * @scmd: SCSI command reference
41 *
42 * Calculate the host tag based on block tag for a given scmd.
43 *
44 * Return: Valid host tag or MPI3MR_HOSTTAG_INVALID.
45 */
46static u16 mpi3mr_host_tag_for_scmd(struct mpi3mr_ioc *mrioc,
47 struct scsi_cmnd *scmd)
48{
49 struct scmd_priv *priv = NULL;
50 u32 unique_tag;
51 u16 host_tag, hw_queue;
52
53 unique_tag = blk_mq_unique_tag(scmd->request);
54
55 hw_queue = blk_mq_unique_tag_to_hwq(unique_tag);
56 if (hw_queue >= mrioc->num_op_reply_q)
57 return MPI3MR_HOSTTAG_INVALID;
58 host_tag = blk_mq_unique_tag_to_tag(unique_tag);
59
60 if (WARN_ON(host_tag >= mrioc->max_host_ios))
61 return MPI3MR_HOSTTAG_INVALID;
62
63 priv = scsi_cmd_priv(scmd);
64 /*host_tag 0 is invalid hence incrementing by 1*/
65 priv->host_tag = host_tag + 1;
66 priv->scmd = scmd;
67 priv->in_lld_scope = 1;
68 priv->req_q_idx = hw_queue;
69 priv->meta_chain_idx = -1;
70 priv->chain_idx = -1;
71 priv->meta_sg_valid = 0;
72 return priv->host_tag;
73}
74
75/**
76 * mpi3mr_scmd_from_host_tag - Get SCSI command from host tag
77 * @mrioc: Adapter instance reference
78 * @host_tag: Host tag
79 * @qidx: Operational queue index
80 *
81 * Identify the block tag from the host tag and queue index and
82 * retrieve associated scsi command using scsi_host_find_tag().
83 *
84 * Return: SCSI command reference or NULL.
85 */
86static struct scsi_cmnd *mpi3mr_scmd_from_host_tag(
87 struct mpi3mr_ioc *mrioc, u16 host_tag, u16 qidx)
88{
89 struct scsi_cmnd *scmd = NULL;
90 struct scmd_priv *priv = NULL;
91 u32 unique_tag = host_tag - 1;
92
93 if (WARN_ON(host_tag > mrioc->max_host_ios))
94 goto out;
95
96 unique_tag |= (qidx << BLK_MQ_UNIQUE_TAG_BITS);
97
98 scmd = scsi_host_find_tag(mrioc->shost, unique_tag);
99 if (scmd) {
100 priv = scsi_cmd_priv(scmd);
101 if (!priv->in_lld_scope)
102 scmd = NULL;
103 }
104out:
105 return scmd;
106}
107
108/**
109 * mpi3mr_clear_scmd_priv - Cleanup SCSI command private date
110 * @mrioc: Adapter instance reference
111 * @scmd: SCSI command reference
112 *
113 * Invalidate the SCSI command private data to mark the command
114 * is not in LLD scope anymore.
115 *
116 * Return: Nothing.
117 */
118static void mpi3mr_clear_scmd_priv(struct mpi3mr_ioc *mrioc,
119 struct scsi_cmnd *scmd)
120{
121 struct scmd_priv *priv = NULL;
122
123 priv = scsi_cmd_priv(scmd);
124
125 if (WARN_ON(priv->in_lld_scope == 0))
126 return;
127 priv->host_tag = MPI3MR_HOSTTAG_INVALID;
128 priv->req_q_idx = 0xFFFF;
129 priv->scmd = NULL;
130 priv->in_lld_scope = 0;
131 priv->meta_sg_valid = 0;
132 if (priv->chain_idx >= 0) {
133 clear_bit(priv->chain_idx, mrioc->chain_bitmap);
134 priv->chain_idx = -1;
135 }
136 if (priv->meta_chain_idx >= 0) {
137 clear_bit(priv->meta_chain_idx, mrioc->chain_bitmap);
138 priv->meta_chain_idx = -1;
139 }
140}
141
142static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
143 struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc);
144static void mpi3mr_fwevt_worker(struct work_struct *work);
145
146/**
147 * mpi3mr_fwevt_free - firmware event memory dealloctor
148 * @r: k reference pointer of the firmware event
149 *
150 * Free firmware event memory when no reference.
151 */
152static void mpi3mr_fwevt_free(struct kref *r)
153{
154 kfree(container_of(r, struct mpi3mr_fwevt, ref_count));
155}
156
157/**
158 * mpi3mr_fwevt_get - k reference incrementor
159 * @fwevt: Firmware event reference
160 *
161 * Increment firmware event reference count.
162 */
163static void mpi3mr_fwevt_get(struct mpi3mr_fwevt *fwevt)
164{
165 kref_get(&fwevt->ref_count);
166}
167
168/**
169 * mpi3mr_fwevt_put - k reference decrementor
170 * @fwevt: Firmware event reference
171 *
172 * decrement firmware event reference count.
173 */
174static void mpi3mr_fwevt_put(struct mpi3mr_fwevt *fwevt)
175{
176 kref_put(&fwevt->ref_count, mpi3mr_fwevt_free);
177}
178
179/**
180 * mpi3mr_alloc_fwevt - Allocate firmware event
181 * @len: length of firmware event data to allocate
182 *
183 * Allocate firmware event with required length and initialize
184 * the reference counter.
185 *
186 * Return: firmware event reference.
187 */
188static struct mpi3mr_fwevt *mpi3mr_alloc_fwevt(int len)
189{
190 struct mpi3mr_fwevt *fwevt;
191
192 fwevt = kzalloc(sizeof(*fwevt) + len, GFP_ATOMIC);
193 if (!fwevt)
194 return NULL;
195
196 kref_init(&fwevt->ref_count);
197 return fwevt;
198}
199
200/**
201 * mpi3mr_fwevt_add_to_list - Add firmware event to the list
202 * @mrioc: Adapter instance reference
203 * @fwevt: Firmware event reference
204 *
205 * Add the given firmware event to the firmware event list.
206 *
207 * Return: Nothing.
208 */
209static void mpi3mr_fwevt_add_to_list(struct mpi3mr_ioc *mrioc,
210 struct mpi3mr_fwevt *fwevt)
211{
212 unsigned long flags;
213
214 if (!mrioc->fwevt_worker_thread)
215 return;
216
217 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
218 /* get fwevt reference count while adding it to fwevt_list */
219 mpi3mr_fwevt_get(fwevt);
220 INIT_LIST_HEAD(&fwevt->list);
221 list_add_tail(&fwevt->list, &mrioc->fwevt_list);
222 INIT_WORK(&fwevt->work, mpi3mr_fwevt_worker);
223 /* get fwevt reference count while enqueueing it to worker queue */
224 mpi3mr_fwevt_get(fwevt);
225 queue_work(mrioc->fwevt_worker_thread, &fwevt->work);
226 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
227}
228
229/**
230 * mpi3mr_fwevt_del_from_list - Delete firmware event from list
231 * @mrioc: Adapter instance reference
232 * @fwevt: Firmware event reference
233 *
234 * Delete the given firmware event from the firmware event list.
235 *
236 * Return: Nothing.
237 */
238static void mpi3mr_fwevt_del_from_list(struct mpi3mr_ioc *mrioc,
239 struct mpi3mr_fwevt *fwevt)
240{
241 unsigned long flags;
242
243 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
244 if (!list_empty(&fwevt->list)) {
245 list_del_init(&fwevt->list);
246 /*
247 * Put fwevt reference count after
248 * removing it from fwevt_list
249 */
250 mpi3mr_fwevt_put(fwevt);
251 }
252 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
253}
254
255/**
256 * mpi3mr_dequeue_fwevt - Dequeue firmware event from the list
257 * @mrioc: Adapter instance reference
258 *
259 * Dequeue a firmware event from the firmware event list.
260 *
261 * Return: firmware event.
262 */
263static struct mpi3mr_fwevt *mpi3mr_dequeue_fwevt(
264 struct mpi3mr_ioc *mrioc)
265{
266 unsigned long flags;
267 struct mpi3mr_fwevt *fwevt = NULL;
268
269 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
270 if (!list_empty(&mrioc->fwevt_list)) {
271 fwevt = list_first_entry(&mrioc->fwevt_list,
272 struct mpi3mr_fwevt, list);
273 list_del_init(&fwevt->list);
274 /*
275 * Put fwevt reference count after
276 * removing it from fwevt_list
277 */
278 mpi3mr_fwevt_put(fwevt);
279 }
280 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
281
282 return fwevt;
283}
284
285/**
286 * mpi3mr_cleanup_fwevt_list - Cleanup firmware event list
287 * @mrioc: Adapter instance reference
288 *
289 * Flush all pending firmware events from the firmware event
290 * list.
291 *
292 * Return: Nothing.
293 */
294void mpi3mr_cleanup_fwevt_list(struct mpi3mr_ioc *mrioc)
295{
296 struct mpi3mr_fwevt *fwevt = NULL;
297
298 if ((list_empty(&mrioc->fwevt_list) && !mrioc->current_event) ||
299 !mrioc->fwevt_worker_thread)
300 return;
301
302 while ((fwevt = mpi3mr_dequeue_fwevt(mrioc)) ||
303 (fwevt = mrioc->current_event)) {
304 /*
305 * Wait on the fwevt to complete. If this returns 1, then
306 * the event was never executed, and we need a put for the
307 * reference the work had on the fwevt.
308 *
309 * If it did execute, we wait for it to finish, and the put will
310 * happen from mpi3mr_process_fwevt()
311 */
312 if (cancel_work_sync(&fwevt->work)) {
313 /*
314 * Put fwevt reference count after
315 * dequeuing it from worker queue
316 */
317 mpi3mr_fwevt_put(fwevt);
318 /*
319 * Put fwevt reference count to neutralize
320 * kref_init increment
321 */
322 mpi3mr_fwevt_put(fwevt);
323 }
324 }
325}
326
327/**
328 * mpi3mr_invalidate_devhandles -Invalidate device handles
329 * @mrioc: Adapter instance reference
330 *
331 * Invalidate the device handles in the target device structures
332 * . Called post reset prior to reinitializing the controller.
333 *
334 * Return: Nothing.
335 */
336void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc)
337{
338 struct mpi3mr_tgt_dev *tgtdev;
339 struct mpi3mr_stgt_priv_data *tgt_priv;
340
341 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
342 tgtdev->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
343 if (tgtdev->starget && tgtdev->starget->hostdata) {
344 tgt_priv = tgtdev->starget->hostdata;
345 tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
346 }
347 }
348}
349
350/**
351 * mpi3mr_print_scmd - print individual SCSI command
352 * @rq: Block request
353 * @data: Adapter instance reference
354 * @reserved: N/A. Currently not used
355 *
356 * Print the SCSI command details if it is in LLD scope.
357 *
358 * Return: true always.
359 */
360static bool mpi3mr_print_scmd(struct request *rq,
361 void *data, bool reserved)
362{
363 struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data;
364 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
365 struct scmd_priv *priv = NULL;
366
367 if (scmd) {
368 priv = scsi_cmd_priv(scmd);
369 if (!priv->in_lld_scope)
370 goto out;
371
372 ioc_info(mrioc, "%s :Host Tag = %d, qid = %d\n",
373 __func__, priv->host_tag, priv->req_q_idx + 1);
374 scsi_print_command(scmd);
375 }
376
377out:
378 return(true);
379}
380
381/**
382 * mpi3mr_flush_scmd - Flush individual SCSI command
383 * @rq: Block request
384 * @data: Adapter instance reference
385 * @reserved: N/A. Currently not used
386 *
387 * Return the SCSI command to the upper layers if it is in LLD
388 * scope.
389 *
390 * Return: true always.
391 */
392
393static bool mpi3mr_flush_scmd(struct request *rq,
394 void *data, bool reserved)
395{
396 struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data;
397 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
398 struct scmd_priv *priv = NULL;
399
400 if (scmd) {
401 priv = scsi_cmd_priv(scmd);
402 if (!priv->in_lld_scope)
403 goto out;
404
405 if (priv->meta_sg_valid)
406 dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd),
407 scsi_prot_sg_count(scmd), scmd->sc_data_direction);
408 mpi3mr_clear_scmd_priv(mrioc, scmd);
409 scsi_dma_unmap(scmd);
410 scmd->result = DID_RESET << 16;
411 scsi_print_command(scmd);
412 scmd->scsi_done(scmd);
413 mrioc->flush_io_count++;
414 }
415
416out:
417 return(true);
418}
419
420/**
421 * mpi3mr_flush_host_io - Flush host I/Os
422 * @mrioc: Adapter instance reference
423 *
424 * Flush all of the pending I/Os by calling
425 * blk_mq_tagset_busy_iter() for each possible tag. This is
426 * executed post controller reset
427 *
428 * Return: Nothing.
429 */
430void mpi3mr_flush_host_io(struct mpi3mr_ioc *mrioc)
431{
432 struct Scsi_Host *shost = mrioc->shost;
433
434 mrioc->flush_io_count = 0;
435 ioc_info(mrioc, "%s :Flushing Host I/O cmds post reset\n", __func__);
436 blk_mq_tagset_busy_iter(&shost->tag_set,
437 mpi3mr_flush_scmd, (void *)mrioc);
438 ioc_info(mrioc, "%s :Flushed %d Host I/O cmds\n", __func__,
439 mrioc->flush_io_count);
440}
441
442/**
443 * mpi3mr_alloc_tgtdev - target device allocator
444 *
445 * Allocate target device instance and initialize the reference
446 * count
447 *
448 * Return: target device instance.
449 */
450static struct mpi3mr_tgt_dev *mpi3mr_alloc_tgtdev(void)
451{
452 struct mpi3mr_tgt_dev *tgtdev;
453
454 tgtdev = kzalloc(sizeof(*tgtdev), GFP_ATOMIC);
455 if (!tgtdev)
456 return NULL;
457 kref_init(&tgtdev->ref_count);
458 return tgtdev;
459}
460
461/**
462 * mpi3mr_tgtdev_add_to_list -Add tgtdevice to the list
463 * @mrioc: Adapter instance reference
464 * @tgtdev: Target device
465 *
466 * Add the target device to the target device list
467 *
468 * Return: Nothing.
469 */
470static void mpi3mr_tgtdev_add_to_list(struct mpi3mr_ioc *mrioc,
471 struct mpi3mr_tgt_dev *tgtdev)
472{
473 unsigned long flags;
474
475 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
476 mpi3mr_tgtdev_get(tgtdev);
477 INIT_LIST_HEAD(&tgtdev->list);
478 list_add_tail(&tgtdev->list, &mrioc->tgtdev_list);
479 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
480}
481
482/**
483 * mpi3mr_tgtdev_del_from_list -Delete tgtdevice from the list
484 * @mrioc: Adapter instance reference
485 * @tgtdev: Target device
486 *
487 * Remove the target device from the target device list
488 *
489 * Return: Nothing.
490 */
491static void mpi3mr_tgtdev_del_from_list(struct mpi3mr_ioc *mrioc,
492 struct mpi3mr_tgt_dev *tgtdev)
493{
494 unsigned long flags;
495
496 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
497 if (!list_empty(&tgtdev->list)) {
498 list_del_init(&tgtdev->list);
499 mpi3mr_tgtdev_put(tgtdev);
500 }
501 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
502}
503
504/**
505 * __mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle
506 * @mrioc: Adapter instance reference
507 * @handle: Device handle
508 *
509 * Accessor to retrieve target device from the device handle.
510 * Non Lock version
511 *
512 * Return: Target device reference.
513 */
514static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_handle(
515 struct mpi3mr_ioc *mrioc, u16 handle)
516{
517 struct mpi3mr_tgt_dev *tgtdev;
518
519 assert_spin_locked(&mrioc->tgtdev_lock);
520 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list)
521 if (tgtdev->dev_handle == handle)
522 goto found_tgtdev;
523 return NULL;
524
525found_tgtdev:
526 mpi3mr_tgtdev_get(tgtdev);
527 return tgtdev;
528}
529
530/**
531 * mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle
532 * @mrioc: Adapter instance reference
533 * @handle: Device handle
534 *
535 * Accessor to retrieve target device from the device handle.
536 * Lock version
537 *
538 * Return: Target device reference.
539 */
540static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_handle(
541 struct mpi3mr_ioc *mrioc, u16 handle)
542{
543 struct mpi3mr_tgt_dev *tgtdev;
544 unsigned long flags;
545
546 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
547 tgtdev = __mpi3mr_get_tgtdev_by_handle(mrioc, handle);
548 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
549 return tgtdev;
550}
551
552/**
553 * __mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persist ID
554 * @mrioc: Adapter instance reference
555 * @persist_id: Persistent ID
556 *
557 * Accessor to retrieve target device from the Persistent ID.
558 * Non Lock version
559 *
560 * Return: Target device reference.
561 */
562static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_perst_id(
563 struct mpi3mr_ioc *mrioc, u16 persist_id)
564{
565 struct mpi3mr_tgt_dev *tgtdev;
566
567 assert_spin_locked(&mrioc->tgtdev_lock);
568 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list)
569 if (tgtdev->perst_id == persist_id)
570 goto found_tgtdev;
571 return NULL;
572
573found_tgtdev:
574 mpi3mr_tgtdev_get(tgtdev);
575 return tgtdev;
576}
577
578/**
579 * mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persistent ID
580 * @mrioc: Adapter instance reference
581 * @persist_id: Persistent ID
582 *
583 * Accessor to retrieve target device from the Persistent ID.
584 * Lock version
585 *
586 * Return: Target device reference.
587 */
588static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_perst_id(
589 struct mpi3mr_ioc *mrioc, u16 persist_id)
590{
591 struct mpi3mr_tgt_dev *tgtdev;
592 unsigned long flags;
593
594 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
595 tgtdev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, persist_id);
596 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
597 return tgtdev;
598}
599
600/**
601 * __mpi3mr_get_tgtdev_from_tgtpriv -Get tgtdev from tgt private
602 * @mrioc: Adapter instance reference
603 * @tgt_priv: Target private data
604 *
605 * Accessor to return target device from the target private
606 * data. Non Lock version
607 *
608 * Return: Target device reference.
609 */
610static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_from_tgtpriv(
611 struct mpi3mr_ioc *mrioc, struct mpi3mr_stgt_priv_data *tgt_priv)
612{
613 struct mpi3mr_tgt_dev *tgtdev;
614
615 assert_spin_locked(&mrioc->tgtdev_lock);
616 tgtdev = tgt_priv->tgt_dev;
617 if (tgtdev)
618 mpi3mr_tgtdev_get(tgtdev);
619 return tgtdev;
620}
621
622/**
623 * mpi3mr_remove_tgtdev_from_host - Remove dev from upper layers
624 * @mrioc: Adapter instance reference
625 * @tgtdev: Target device structure
626 *
627 * Checks whether the device is exposed to upper layers and if it
628 * is then remove the device from upper layers by calling
629 * scsi_remove_target().
630 *
631 * Return: 0 on success, non zero on failure.
632 */
633static void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc,
634 struct mpi3mr_tgt_dev *tgtdev)
635{
636 struct mpi3mr_stgt_priv_data *tgt_priv;
637
638 ioc_info(mrioc, "%s :Removing handle(0x%04x), wwid(0x%016llx)\n",
639 __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
640 if (tgtdev->starget && tgtdev->starget->hostdata) {
641 tgt_priv = tgtdev->starget->hostdata;
642 tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
643 }
644
645 if (tgtdev->starget) {
646 scsi_remove_target(&tgtdev->starget->dev);
647 tgtdev->host_exposed = 0;
648 }
649 ioc_info(mrioc, "%s :Removed handle(0x%04x), wwid(0x%016llx)\n",
650 __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
651}
652
653/**
654 * mpi3mr_report_tgtdev_to_host - Expose device to upper layers
655 * @mrioc: Adapter instance reference
656 * @perst_id: Persistent ID of the device
657 *
658 * Checks whether the device can be exposed to upper layers and
659 * if it is not then expose the device to upper layers by
660 * calling scsi_scan_target().
661 *
662 * Return: 0 on success, non zero on failure.
663 */
664static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
665 u16 perst_id)
666{
667 int retval = 0;
668 struct mpi3mr_tgt_dev *tgtdev;
669
670 tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
671 if (!tgtdev) {
672 retval = -1;
673 goto out;
674 }
675 if (tgtdev->is_hidden) {
676 retval = -1;
677 goto out;
678 }
679 if (!tgtdev->host_exposed && !mrioc->reset_in_progress) {
680 tgtdev->host_exposed = 1;
681 scsi_scan_target(&mrioc->shost->shost_gendev, 0,
682 tgtdev->perst_id,
683 SCAN_WILD_CARD, SCSI_SCAN_INITIAL);
684 if (!tgtdev->starget)
685 tgtdev->host_exposed = 0;
686 }
687out:
688 if (tgtdev)
689 mpi3mr_tgtdev_put(tgtdev);
690
691 return retval;
692}
693
694/**
695 * mpi3mr_change_queue_depth- Change QD callback handler
696 * @sdev: SCSI device reference
697 * @q_depth: Queue depth
698 *
699 * Validate and limit QD and call scsi_change_queue_depth.
700 *
701 * Return: return value of scsi_change_queue_depth
702 */
703static int mpi3mr_change_queue_depth(struct scsi_device *sdev,
704 int q_depth)
705{
706 struct scsi_target *starget = scsi_target(sdev);
707 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
708 int retval = 0;
709
710 if (!sdev->tagged_supported)
711 q_depth = 1;
712 if (q_depth > shost->can_queue)
713 q_depth = shost->can_queue;
714 else if (!q_depth)
715 q_depth = MPI3MR_DEFAULT_SDEV_QD;
716 retval = scsi_change_queue_depth(sdev, q_depth);
717
718 return retval;
719}
720
721/**
722 * mpi3mr_update_sdev - Update SCSI device information
723 * @sdev: SCSI device reference
724 * @data: target device reference
725 *
726 * This is an iterator function called for each SCSI device in a
727 * target to update the target specific information into each
728 * SCSI device.
729 *
730 * Return: Nothing.
731 */
732static void
733mpi3mr_update_sdev(struct scsi_device *sdev, void *data)
734{
735 struct mpi3mr_tgt_dev *tgtdev;
736
737 tgtdev = (struct mpi3mr_tgt_dev *)data;
738 if (!tgtdev)
739 return;
740
741 mpi3mr_change_queue_depth(sdev, tgtdev->q_depth);
742 switch (tgtdev->dev_type) {
743 case MPI3_DEVICE_DEVFORM_PCIE:
744 /*The block layer hw sector size = 512*/
745 blk_queue_max_hw_sectors(sdev->request_queue,
746 tgtdev->dev_spec.pcie_inf.mdts / 512);
747 blk_queue_virt_boundary(sdev->request_queue,
748 ((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1));
749
750 break;
751 default:
752 break;
753 }
754}
755
756/**
757 * mpi3mr_rfresh_tgtdevs - Refresh target device exposure
758 * @mrioc: Adapter instance reference
759 *
760 * This is executed post controller reset to identify any
761 * missing devices during reset and remove from the upper layers
762 * or expose any newly detected device to the upper layers.
763 *
764 * Return: Nothing.
765 */
766
767void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc)
768{
769 struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
770
771 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
772 list) {
773 if ((tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) &&
774 tgtdev->host_exposed) {
775 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
776 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
777 mpi3mr_tgtdev_put(tgtdev);
778 }
779 }
780
781 tgtdev = NULL;
782 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
783 if ((tgtdev->dev_handle != MPI3MR_INVALID_DEV_HANDLE) &&
784 !tgtdev->is_hidden && !tgtdev->host_exposed)
785 mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id);
786 }
787}
788
789/**
790 * mpi3mr_update_tgtdev - DevStatusChange evt bottomhalf
791 * @mrioc: Adapter instance reference
792 * @tgtdev: Target device internal structure
793 * @dev_pg0: New device page0
794 *
795 * Update the information from the device page0 into the driver
796 * cached target device structure.
797 *
798 * Return: Nothing.
799 */
800static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
801 struct mpi3mr_tgt_dev *tgtdev, struct mpi3_device_page0 *dev_pg0)
802{
803 u16 flags = 0;
804 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
805 u8 prot_mask = 0;
806
807 tgtdev->perst_id = le16_to_cpu(dev_pg0->persistent_id);
808 tgtdev->dev_handle = le16_to_cpu(dev_pg0->dev_handle);
809 tgtdev->dev_type = dev_pg0->device_form;
810 tgtdev->encl_handle = le16_to_cpu(dev_pg0->enclosure_handle);
811 tgtdev->parent_handle = le16_to_cpu(dev_pg0->parent_dev_handle);
812 tgtdev->slot = le16_to_cpu(dev_pg0->slot);
813 tgtdev->q_depth = le16_to_cpu(dev_pg0->queue_depth);
814 tgtdev->wwid = le64_to_cpu(dev_pg0->wwid);
815
816 flags = le16_to_cpu(dev_pg0->flags);
817 tgtdev->is_hidden = (flags & MPI3_DEVICE0_FLAGS_HIDDEN);
818
819 if (tgtdev->starget && tgtdev->starget->hostdata) {
820 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
821 tgtdev->starget->hostdata;
822 scsi_tgt_priv_data->perst_id = tgtdev->perst_id;
823 scsi_tgt_priv_data->dev_handle = tgtdev->dev_handle;
824 scsi_tgt_priv_data->dev_type = tgtdev->dev_type;
825 }
826
827 switch (tgtdev->dev_type) {
828 case MPI3_DEVICE_DEVFORM_SAS_SATA:
829 {
830 struct mpi3_device0_sas_sata_format *sasinf =
831 &dev_pg0->device_specific.sas_sata_format;
832 u16 dev_info = le16_to_cpu(sasinf->device_info);
833
834 tgtdev->dev_spec.sas_sata_inf.dev_info = dev_info;
835 tgtdev->dev_spec.sas_sata_inf.sas_address =
836 le64_to_cpu(sasinf->sas_address);
837 if ((dev_info & MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_MASK) !=
838 MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_END_DEVICE)
839 tgtdev->is_hidden = 1;
840 else if (!(dev_info & (MPI3_SAS_DEVICE_INFO_STP_SATA_TARGET |
841 MPI3_SAS_DEVICE_INFO_SSP_TARGET)))
842 tgtdev->is_hidden = 1;
843 break;
844 }
845 case MPI3_DEVICE_DEVFORM_PCIE:
846 {
847 struct mpi3_device0_pcie_format *pcieinf =
848 &dev_pg0->device_specific.pcie_format;
849 u16 dev_info = le16_to_cpu(pcieinf->device_info);
850
851 tgtdev->dev_spec.pcie_inf.capb =
852 le32_to_cpu(pcieinf->capabilities);
853 tgtdev->dev_spec.pcie_inf.mdts = MPI3MR_DEFAULT_MDTS;
854 /* 2^12 = 4096 */
855 tgtdev->dev_spec.pcie_inf.pgsz = 12;
856 if (dev_pg0->access_status == MPI3_DEVICE0_ASTATUS_NO_ERRORS) {
857 tgtdev->dev_spec.pcie_inf.mdts =
858 le32_to_cpu(pcieinf->maximum_data_transfer_size);
859 tgtdev->dev_spec.pcie_inf.pgsz = pcieinf->page_size;
860 tgtdev->dev_spec.pcie_inf.reset_to =
861 pcieinf->controller_reset_to;
862 tgtdev->dev_spec.pcie_inf.abort_to =
863 pcieinf->nv_me_abort_to;
864 }
865 if (tgtdev->dev_spec.pcie_inf.mdts > (1024 * 1024))
866 tgtdev->dev_spec.pcie_inf.mdts = (1024 * 1024);
867 if ((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
868 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE)
869 tgtdev->is_hidden = 1;
870 if (!mrioc->shost)
871 break;
872 prot_mask = scsi_host_get_prot(mrioc->shost);
873 if (prot_mask & SHOST_DIX_TYPE0_PROTECTION) {
874 scsi_host_set_prot(mrioc->shost, prot_mask & 0x77);
875 ioc_info(mrioc,
876 "%s : Disabling DIX0 prot capability\n", __func__);
877 ioc_info(mrioc,
878 "because HBA does not support DIX0 operation on NVME drives\n");
879 }
880 break;
881 }
882 case MPI3_DEVICE_DEVFORM_VD:
883 {
884 struct mpi3_device0_vd_format *vdinf =
885 &dev_pg0->device_specific.vd_format;
886
887 tgtdev->dev_spec.vol_inf.state = vdinf->vd_state;
888 if (vdinf->vd_state == MPI3_DEVICE0_VD_STATE_OFFLINE)
889 tgtdev->is_hidden = 1;
890 break;
891 }
892 default:
893 break;
894 }
895}
896
897/**
898 * mpi3mr_devstatuschg_evt_bh - DevStatusChange evt bottomhalf
899 * @mrioc: Adapter instance reference
900 * @fwevt: Firmware event information.
901 *
902 * Process Device status Change event and based on device's new
903 * information, either expose the device to the upper layers, or
904 * remove the device from upper layers.
905 *
906 * Return: Nothing.
907 */
908static void mpi3mr_devstatuschg_evt_bh(struct mpi3mr_ioc *mrioc,
909 struct mpi3mr_fwevt *fwevt)
910{
911 u16 dev_handle = 0;
912 u8 uhide = 0, delete = 0, cleanup = 0;
913 struct mpi3mr_tgt_dev *tgtdev = NULL;
914 struct mpi3_event_data_device_status_change *evtdata =
915 (struct mpi3_event_data_device_status_change *)fwevt->event_data;
916
917 dev_handle = le16_to_cpu(evtdata->dev_handle);
918 ioc_info(mrioc,
919 "%s :device status change: handle(0x%04x): reason code(0x%x)\n",
920 __func__, dev_handle, evtdata->reason_code);
921 switch (evtdata->reason_code) {
922 case MPI3_EVENT_DEV_STAT_RC_HIDDEN:
923 delete = 1;
924 break;
925 case MPI3_EVENT_DEV_STAT_RC_NOT_HIDDEN:
926 uhide = 1;
927 break;
928 case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING:
929 delete = 1;
930 cleanup = 1;
931 break;
932 default:
933 ioc_info(mrioc, "%s :Unhandled reason code(0x%x)\n", __func__,
934 evtdata->reason_code);
935 break;
936 }
937
938 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
939 if (!tgtdev)
940 goto out;
941 if (uhide) {
942 tgtdev->is_hidden = 0;
943 if (!tgtdev->host_exposed)
944 mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id);
945 }
946 if (tgtdev->starget && tgtdev->starget->hostdata) {
947 if (delete)
948 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
949 }
950 if (cleanup) {
951 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
952 mpi3mr_tgtdev_put(tgtdev);
953 }
954
955out:
956 if (tgtdev)
957 mpi3mr_tgtdev_put(tgtdev);
958}
959
960/**
961 * mpi3mr_devinfochg_evt_bh - DeviceInfoChange evt bottomhalf
962 * @mrioc: Adapter instance reference
963 * @dev_pg0: New device page0
964 *
965 * Process Device Info Change event and based on device's new
966 * information, either expose the device to the upper layers, or
967 * remove the device from upper layers or update the details of
968 * the device.
969 *
970 * Return: Nothing.
971 */
972static void mpi3mr_devinfochg_evt_bh(struct mpi3mr_ioc *mrioc,
973 struct mpi3_device_page0 *dev_pg0)
974{
975 struct mpi3mr_tgt_dev *tgtdev = NULL;
976 u16 dev_handle = 0, perst_id = 0;
977
978 perst_id = le16_to_cpu(dev_pg0->persistent_id);
979 dev_handle = le16_to_cpu(dev_pg0->dev_handle);
980 ioc_info(mrioc,
981 "%s :Device info change: handle(0x%04x): persist_id(0x%x)\n",
982 __func__, dev_handle, perst_id);
983 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
984 if (!tgtdev)
985 goto out;
986 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0);
987 if (!tgtdev->is_hidden && !tgtdev->host_exposed)
988 mpi3mr_report_tgtdev_to_host(mrioc, perst_id);
989 if (tgtdev->is_hidden && tgtdev->host_exposed)
990 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
991 if (!tgtdev->is_hidden && tgtdev->host_exposed && tgtdev->starget)
992 starget_for_each_device(tgtdev->starget, (void *)tgtdev,
993 mpi3mr_update_sdev);
994out:
995 if (tgtdev)
996 mpi3mr_tgtdev_put(tgtdev);
997}
998
999/**
1000 * mpi3mr_sastopochg_evt_debug - SASTopoChange details
1001 * @mrioc: Adapter instance reference
1002 * @event_data: SAS topology change list event data
1003 *
1004 * Prints information about the SAS topology change event.
1005 *
1006 * Return: Nothing.
1007 */
1008static void
1009mpi3mr_sastopochg_evt_debug(struct mpi3mr_ioc *mrioc,
1010 struct mpi3_event_data_sas_topology_change_list *event_data)
1011{
1012 int i;
1013 u16 handle;
1014 u8 reason_code, phy_number;
1015 char *status_str = NULL;
1016 u8 link_rate, prev_link_rate;
1017
1018 switch (event_data->exp_status) {
1019 case MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
1020 status_str = "remove";
1021 break;
1022 case MPI3_EVENT_SAS_TOPO_ES_RESPONDING:
1023 status_str = "responding";
1024 break;
1025 case MPI3_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
1026 status_str = "remove delay";
1027 break;
1028 case MPI3_EVENT_SAS_TOPO_ES_NO_EXPANDER:
1029 status_str = "direct attached";
1030 break;
1031 default:
1032 status_str = "unknown status";
1033 break;
1034 }
1035 ioc_info(mrioc, "%s :sas topology change: (%s)\n",
1036 __func__, status_str);
1037 ioc_info(mrioc,
1038 "%s :\texpander_handle(0x%04x), enclosure_handle(0x%04x) start_phy(%02d), num_entries(%d)\n",
1039 __func__, le16_to_cpu(event_data->expander_dev_handle),
1040 le16_to_cpu(event_data->enclosure_handle),
1041 event_data->start_phy_num, event_data->num_entries);
1042 for (i = 0; i < event_data->num_entries; i++) {
1043 handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle);
1044 if (!handle)
1045 continue;
1046 phy_number = event_data->start_phy_num + i;
1047 reason_code = event_data->phy_entry[i].status &
1048 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
1049 switch (reason_code) {
1050 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
1051 status_str = "target remove";
1052 break;
1053 case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING:
1054 status_str = "delay target remove";
1055 break;
1056 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
1057 status_str = "link status change";
1058 break;
1059 case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE:
1060 status_str = "link status no change";
1061 break;
1062 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
1063 status_str = "target responding";
1064 break;
1065 default:
1066 status_str = "unknown";
1067 break;
1068 }
1069 link_rate = event_data->phy_entry[i].link_rate >> 4;
1070 prev_link_rate = event_data->phy_entry[i].link_rate & 0xF;
1071 ioc_info(mrioc,
1072 "%s :\tphy(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n",
1073 __func__, phy_number, handle, status_str, link_rate,
1074 prev_link_rate);
1075 }
1076}
1077
1078/**
1079 * mpi3mr_sastopochg_evt_bh - SASTopologyChange evt bottomhalf
1080 * @mrioc: Adapter instance reference
1081 * @fwevt: Firmware event reference
1082 *
1083 * Prints information about the SAS topology change event and
1084 * for "not responding" event code, removes the device from the
1085 * upper layers.
1086 *
1087 * Return: Nothing.
1088 */
1089static void mpi3mr_sastopochg_evt_bh(struct mpi3mr_ioc *mrioc,
1090 struct mpi3mr_fwevt *fwevt)
1091{
1092 struct mpi3_event_data_sas_topology_change_list *event_data =
1093 (struct mpi3_event_data_sas_topology_change_list *)fwevt->event_data;
1094 int i;
1095 u16 handle;
1096 u8 reason_code;
1097 struct mpi3mr_tgt_dev *tgtdev = NULL;
1098
1099 mpi3mr_sastopochg_evt_debug(mrioc, event_data);
1100
1101 for (i = 0; i < event_data->num_entries; i++) {
1102 handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle);
1103 if (!handle)
1104 continue;
1105 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
1106 if (!tgtdev)
1107 continue;
1108
1109 reason_code = event_data->phy_entry[i].status &
1110 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
1111
1112 switch (reason_code) {
1113 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
1114 if (tgtdev->host_exposed)
1115 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1116 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
1117 mpi3mr_tgtdev_put(tgtdev);
1118 break;
1119 default:
1120 break;
1121 }
1122 if (tgtdev)
1123 mpi3mr_tgtdev_put(tgtdev);
1124 }
1125}
1126
1127/**
1128 * mpi3mr_pcietopochg_evt_debug - PCIeTopoChange details
1129 * @mrioc: Adapter instance reference
1130 * @event_data: PCIe topology change list event data
1131 *
1132 * Prints information about the PCIe topology change event.
1133 *
1134 * Return: Nothing.
1135 */
1136static void
1137mpi3mr_pcietopochg_evt_debug(struct mpi3mr_ioc *mrioc,
1138 struct mpi3_event_data_pcie_topology_change_list *event_data)
1139{
1140 int i;
1141 u16 handle;
1142 u16 reason_code;
1143 u8 port_number;
1144 char *status_str = NULL;
1145 u8 link_rate, prev_link_rate;
1146
1147 switch (event_data->switch_status) {
1148 case MPI3_EVENT_PCIE_TOPO_SS_NOT_RESPONDING:
1149 status_str = "remove";
1150 break;
1151 case MPI3_EVENT_PCIE_TOPO_SS_RESPONDING:
1152 status_str = "responding";
1153 break;
1154 case MPI3_EVENT_PCIE_TOPO_SS_DELAY_NOT_RESPONDING:
1155 status_str = "remove delay";
1156 break;
1157 case MPI3_EVENT_PCIE_TOPO_SS_NO_PCIE_SWITCH:
1158 status_str = "direct attached";
1159 break;
1160 default:
1161 status_str = "unknown status";
1162 break;
1163 }
1164 ioc_info(mrioc, "%s :pcie topology change: (%s)\n",
1165 __func__, status_str);
1166 ioc_info(mrioc,
1167 "%s :\tswitch_handle(0x%04x), enclosure_handle(0x%04x) start_port(%02d), num_entries(%d)\n",
1168 __func__, le16_to_cpu(event_data->switch_dev_handle),
1169 le16_to_cpu(event_data->enclosure_handle),
1170 event_data->start_port_num, event_data->num_entries);
1171 for (i = 0; i < event_data->num_entries; i++) {
1172 handle =
1173 le16_to_cpu(event_data->port_entry[i].attached_dev_handle);
1174 if (!handle)
1175 continue;
1176 port_number = event_data->start_port_num + i;
1177 reason_code = event_data->port_entry[i].port_status;
1178 switch (reason_code) {
1179 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
1180 status_str = "target remove";
1181 break;
1182 case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING:
1183 status_str = "delay target remove";
1184 break;
1185 case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED:
1186 status_str = "link status change";
1187 break;
1188 case MPI3_EVENT_PCIE_TOPO_PS_NO_CHANGE:
1189 status_str = "link status no change";
1190 break;
1191 case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING:
1192 status_str = "target responding";
1193 break;
1194 default:
1195 status_str = "unknown";
1196 break;
1197 }
1198 link_rate = event_data->port_entry[i].current_port_info &
1199 MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK;
1200 prev_link_rate = event_data->port_entry[i].previous_port_info &
1201 MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK;
1202 ioc_info(mrioc,
1203 "%s :\tport(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n",
1204 __func__, port_number, handle, status_str, link_rate,
1205 prev_link_rate);
1206 }
1207}
1208
1209/**
1210 * mpi3mr_pcietopochg_evt_bh - PCIeTopologyChange evt bottomhalf
1211 * @mrioc: Adapter instance reference
1212 * @fwevt: Firmware event reference
1213 *
1214 * Prints information about the PCIe topology change event and
1215 * for "not responding" event code, removes the device from the
1216 * upper layers.
1217 *
1218 * Return: Nothing.
1219 */
1220static void mpi3mr_pcietopochg_evt_bh(struct mpi3mr_ioc *mrioc,
1221 struct mpi3mr_fwevt *fwevt)
1222{
1223 struct mpi3_event_data_pcie_topology_change_list *event_data =
1224 (struct mpi3_event_data_pcie_topology_change_list *)fwevt->event_data;
1225 int i;
1226 u16 handle;
1227 u8 reason_code;
1228 struct mpi3mr_tgt_dev *tgtdev = NULL;
1229
1230 mpi3mr_pcietopochg_evt_debug(mrioc, event_data);
1231
1232 for (i = 0; i < event_data->num_entries; i++) {
1233 handle =
1234 le16_to_cpu(event_data->port_entry[i].attached_dev_handle);
1235 if (!handle)
1236 continue;
1237 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
1238 if (!tgtdev)
1239 continue;
1240
1241 reason_code = event_data->port_entry[i].port_status;
1242
1243 switch (reason_code) {
1244 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
1245 if (tgtdev->host_exposed)
1246 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1247 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
1248 mpi3mr_tgtdev_put(tgtdev);
1249 break;
1250 default:
1251 break;
1252 }
1253 if (tgtdev)
1254 mpi3mr_tgtdev_put(tgtdev);
1255 }
1256}
1257
1258/**
1259 * mpi3mr_fwevt_bh - Firmware event bottomhalf handler
1260 * @mrioc: Adapter instance reference
1261 * @fwevt: Firmware event reference
1262 *
1263 * Identifies the firmware event and calls corresponding bottomg
1264 * half handler and sends event acknowledgment if required.
1265 *
1266 * Return: Nothing.
1267 */
1268static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
1269 struct mpi3mr_fwevt *fwevt)
1270{
1271 mrioc->current_event = fwevt;
1272 mpi3mr_fwevt_del_from_list(mrioc, fwevt);
1273
1274 if (mrioc->stop_drv_processing)
1275 goto out;
1276
1277 if (!fwevt->process_evt)
1278 goto evt_ack;
1279
1280 switch (fwevt->event_id) {
1281 case MPI3_EVENT_DEVICE_ADDED:
1282 {
1283 struct mpi3_device_page0 *dev_pg0 =
1284 (struct mpi3_device_page0 *)fwevt->event_data;
1285 mpi3mr_report_tgtdev_to_host(mrioc,
1286 le16_to_cpu(dev_pg0->persistent_id));
1287 break;
1288 }
1289 case MPI3_EVENT_DEVICE_INFO_CHANGED:
1290 {
1291 mpi3mr_devinfochg_evt_bh(mrioc,
1292 (struct mpi3_device_page0 *)fwevt->event_data);
1293 break;
1294 }
1295 case MPI3_EVENT_DEVICE_STATUS_CHANGE:
1296 {
1297 mpi3mr_devstatuschg_evt_bh(mrioc, fwevt);
1298 break;
1299 }
1300 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
1301 {
1302 mpi3mr_sastopochg_evt_bh(mrioc, fwevt);
1303 break;
1304 }
1305 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
1306 {
1307 mpi3mr_pcietopochg_evt_bh(mrioc, fwevt);
1308 break;
1309 }
1310 default:
1311 break;
1312 }
1313
1314evt_ack:
1315 if (fwevt->send_ack)
1316 mpi3mr_send_event_ack(mrioc, fwevt->event_id,
1317 fwevt->evt_ctx);
1318out:
1319 /* Put fwevt reference count to neutralize kref_init increment */
1320 mpi3mr_fwevt_put(fwevt);
1321 mrioc->current_event = NULL;
1322}
1323
1324/**
1325 * mpi3mr_fwevt_worker - Firmware event worker
1326 * @work: Work struct containing firmware event
1327 *
1328 * Extracts the firmware event and calls mpi3mr_fwevt_bh.
1329 *
1330 * Return: Nothing.
1331 */
1332static void mpi3mr_fwevt_worker(struct work_struct *work)
1333{
1334 struct mpi3mr_fwevt *fwevt = container_of(work, struct mpi3mr_fwevt,
1335 work);
1336 mpi3mr_fwevt_bh(fwevt->mrioc, fwevt);
1337 /*
1338 * Put fwevt reference count after
1339 * dequeuing it from worker queue
1340 */
1341 mpi3mr_fwevt_put(fwevt);
1342}
1343
1344/**
1345 * mpi3mr_create_tgtdev - Create and add a target device
1346 * @mrioc: Adapter instance reference
1347 * @dev_pg0: Device Page 0 data
1348 *
1349 * If the device specified by the device page 0 data is not
1350 * present in the driver's internal list, allocate the memory
1351 * for the device, populate the data and add to the list, else
1352 * update the device data. The key is persistent ID.
1353 *
1354 * Return: 0 on success, -ENOMEM on memory allocation failure
1355 */
1356static int mpi3mr_create_tgtdev(struct mpi3mr_ioc *mrioc,
1357 struct mpi3_device_page0 *dev_pg0)
1358{
1359 int retval = 0;
1360 struct mpi3mr_tgt_dev *tgtdev = NULL;
1361 u16 perst_id = 0;
1362
1363 perst_id = le16_to_cpu(dev_pg0->persistent_id);
1364 tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
1365 if (tgtdev) {
1366 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0);
1367 mpi3mr_tgtdev_put(tgtdev);
1368 } else {
1369 tgtdev = mpi3mr_alloc_tgtdev();
1370 if (!tgtdev)
1371 return -ENOMEM;
1372 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0);
1373 mpi3mr_tgtdev_add_to_list(mrioc, tgtdev);
1374 }
1375
1376 return retval;
1377}
1378
1379/**
1380 * mpi3mr_flush_delayed_rmhs_list - Flush pending commands
1381 * @mrioc: Adapter instance reference
1382 *
1383 * Flush pending commands in the delayed removal handshake list
1384 * due to a controller reset or driver removal as a cleanup.
1385 *
1386 * Return: Nothing
1387 */
1388void mpi3mr_flush_delayed_rmhs_list(struct mpi3mr_ioc *mrioc)
1389{
1390 struct delayed_dev_rmhs_node *_rmhs_node;
1391
1392 while (!list_empty(&mrioc->delayed_rmhs_list)) {
1393 _rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
1394 struct delayed_dev_rmhs_node, list);
1395 list_del(&_rmhs_node->list);
1396 kfree(_rmhs_node);
1397 }
1398}
1399
1400/**
1401 * mpi3mr_dev_rmhs_complete_iou - Device removal IOUC completion
1402 * @mrioc: Adapter instance reference
1403 * @drv_cmd: Internal command tracker
1404 *
1405 * Issues a target reset TM to the firmware from the device
1406 * removal TM pend list or retry the removal handshake sequence
1407 * based on the IOU control request IOC status.
1408 *
1409 * Return: Nothing
1410 */
1411static void mpi3mr_dev_rmhs_complete_iou(struct mpi3mr_ioc *mrioc,
1412 struct mpi3mr_drv_cmd *drv_cmd)
1413{
1414 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
1415 struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL;
1416
1417 ioc_info(mrioc,
1418 "%s :dev_rmhs_iouctrl_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x)\n",
1419 __func__, drv_cmd->dev_handle, drv_cmd->ioc_status,
1420 drv_cmd->ioc_loginfo);
1421 if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
1422 if (drv_cmd->retry_count < MPI3MR_DEV_RMHS_RETRY_COUNT) {
1423 drv_cmd->retry_count++;
1424 ioc_info(mrioc,
1425 "%s :dev_rmhs_iouctrl_complete: handle(0x%04x)retrying handshake retry=%d\n",
1426 __func__, drv_cmd->dev_handle,
1427 drv_cmd->retry_count);
1428 mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle,
1429 drv_cmd, drv_cmd->iou_rc);
1430 return;
1431 }
1432 ioc_err(mrioc,
1433 "%s :dev removal handshake failed after all retries: handle(0x%04x)\n",
1434 __func__, drv_cmd->dev_handle);
1435 } else {
1436 ioc_info(mrioc,
1437 "%s :dev removal handshake completed successfully: handle(0x%04x)\n",
1438 __func__, drv_cmd->dev_handle);
1439 clear_bit(drv_cmd->dev_handle, mrioc->removepend_bitmap);
1440 }
1441
1442 if (!list_empty(&mrioc->delayed_rmhs_list)) {
1443 delayed_dev_rmhs = list_entry(mrioc->delayed_rmhs_list.next,
1444 struct delayed_dev_rmhs_node, list);
1445 drv_cmd->dev_handle = delayed_dev_rmhs->handle;
1446 drv_cmd->retry_count = 0;
1447 drv_cmd->iou_rc = delayed_dev_rmhs->iou_rc;
1448 ioc_info(mrioc,
1449 "%s :dev_rmhs_iouctrl_complete: processing delayed TM: handle(0x%04x)\n",
1450 __func__, drv_cmd->dev_handle);
1451 mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle, drv_cmd,
1452 drv_cmd->iou_rc);
1453 list_del(&delayed_dev_rmhs->list);
1454 kfree(delayed_dev_rmhs);
1455 return;
1456 }
1457 drv_cmd->state = MPI3MR_CMD_NOTUSED;
1458 drv_cmd->callback = NULL;
1459 drv_cmd->retry_count = 0;
1460 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
1461 clear_bit(cmd_idx, mrioc->devrem_bitmap);
1462}
1463
1464/**
1465 * mpi3mr_dev_rmhs_complete_tm - Device removal TM completion
1466 * @mrioc: Adapter instance reference
1467 * @drv_cmd: Internal command tracker
1468 *
1469 * Issues a target reset TM to the firmware from the device
1470 * removal TM pend list or issue IO unit control request as
1471 * part of device removal or hidden acknowledgment handshake.
1472 *
1473 * Return: Nothing
1474 */
1475static void mpi3mr_dev_rmhs_complete_tm(struct mpi3mr_ioc *mrioc,
1476 struct mpi3mr_drv_cmd *drv_cmd)
1477{
1478 struct mpi3_iounit_control_request iou_ctrl;
1479 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
1480 struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL;
1481 int retval;
1482
1483 if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID)
1484 tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
1485
1486 if (tm_reply)
1487 pr_info(IOCNAME
1488 "dev_rmhs_tr_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x), term_count(%d)\n",
1489 mrioc->name, drv_cmd->dev_handle, drv_cmd->ioc_status,
1490 drv_cmd->ioc_loginfo,
1491 le32_to_cpu(tm_reply->termination_count));
1492
1493 pr_info(IOCNAME "Issuing IOU CTL: handle(0x%04x) dev_rmhs idx(%d)\n",
1494 mrioc->name, drv_cmd->dev_handle, cmd_idx);
1495
1496 memset(&iou_ctrl, 0, sizeof(iou_ctrl));
1497
1498 drv_cmd->state = MPI3MR_CMD_PENDING;
1499 drv_cmd->is_waiting = 0;
1500 drv_cmd->callback = mpi3mr_dev_rmhs_complete_iou;
1501 iou_ctrl.operation = drv_cmd->iou_rc;
1502 iou_ctrl.param16[0] = cpu_to_le16(drv_cmd->dev_handle);
1503 iou_ctrl.host_tag = cpu_to_le16(drv_cmd->host_tag);
1504 iou_ctrl.function = MPI3_FUNCTION_IO_UNIT_CONTROL;
1505
1506 retval = mpi3mr_admin_request_post(mrioc, &iou_ctrl, sizeof(iou_ctrl),
1507 1);
1508 if (retval) {
1509 pr_err(IOCNAME "Issue DevRmHsTMIOUCTL: Admin post failed\n",
1510 mrioc->name);
1511 goto out_failed;
1512 }
1513
1514 return;
1515out_failed:
1516 drv_cmd->state = MPI3MR_CMD_NOTUSED;
1517 drv_cmd->callback = NULL;
1518 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
1519 drv_cmd->retry_count = 0;
1520 clear_bit(cmd_idx, mrioc->devrem_bitmap);
1521}
1522
1523/**
1524 * mpi3mr_dev_rmhs_send_tm - Issue TM for device removal
1525 * @mrioc: Adapter instance reference
1526 * @handle: Device handle
1527 * @cmdparam: Internal command tracker
1528 * @iou_rc: IO unit reason code
1529 *
1530 * Issues a target reset TM to the firmware or add it to a pend
1531 * list as part of device removal or hidden acknowledgment
1532 * handshake.
1533 *
1534 * Return: Nothing
1535 */
1536static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
1537 struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc)
1538{
1539 struct mpi3_scsi_task_mgmt_request tm_req;
1540 int retval = 0;
1541 u16 cmd_idx = MPI3MR_NUM_DEVRMCMD;
1542 u8 retrycount = 5;
1543 struct mpi3mr_drv_cmd *drv_cmd = cmdparam;
1544 struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL;
1545
1546 if (drv_cmd)
1547 goto issue_cmd;
1548 do {
1549 cmd_idx = find_first_zero_bit(mrioc->devrem_bitmap,
1550 MPI3MR_NUM_DEVRMCMD);
1551 if (cmd_idx < MPI3MR_NUM_DEVRMCMD) {
1552 if (!test_and_set_bit(cmd_idx, mrioc->devrem_bitmap))
1553 break;
1554 cmd_idx = MPI3MR_NUM_DEVRMCMD;
1555 }
1556 } while (retrycount--);
1557
1558 if (cmd_idx >= MPI3MR_NUM_DEVRMCMD) {
1559 delayed_dev_rmhs = kzalloc(sizeof(*delayed_dev_rmhs),
1560 GFP_ATOMIC);
1561 if (!delayed_dev_rmhs)
1562 return;
1563 INIT_LIST_HEAD(&delayed_dev_rmhs->list);
1564 delayed_dev_rmhs->handle = handle;
1565 delayed_dev_rmhs->iou_rc = iou_rc;
1566 list_add_tail(&delayed_dev_rmhs->list,
1567 &mrioc->delayed_rmhs_list);
1568 ioc_info(mrioc, "%s :DevRmHs: tr:handle(0x%04x) is postponed\n",
1569 __func__, handle);
1570 return;
1571 }
1572 drv_cmd = &mrioc->dev_rmhs_cmds[cmd_idx];
1573
1574issue_cmd:
1575 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
1576 ioc_info(mrioc,
1577 "%s :Issuing TR TM: for devhandle 0x%04x with dev_rmhs %d\n",
1578 __func__, handle, cmd_idx);
1579
1580 memset(&tm_req, 0, sizeof(tm_req));
1581 if (drv_cmd->state & MPI3MR_CMD_PENDING) {
1582 ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__);
1583 goto out;
1584 }
1585 drv_cmd->state = MPI3MR_CMD_PENDING;
1586 drv_cmd->is_waiting = 0;
1587 drv_cmd->callback = mpi3mr_dev_rmhs_complete_tm;
1588 drv_cmd->dev_handle = handle;
1589 drv_cmd->iou_rc = iou_rc;
1590 tm_req.dev_handle = cpu_to_le16(handle);
1591 tm_req.task_type = MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
1592 tm_req.host_tag = cpu_to_le16(drv_cmd->host_tag);
1593 tm_req.task_host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INVALID);
1594 tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT;
1595
1596 set_bit(handle, mrioc->removepend_bitmap);
1597 retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1);
1598 if (retval) {
1599 ioc_err(mrioc, "%s :Issue DevRmHsTM: Admin Post failed\n",
1600 __func__);
1601 goto out_failed;
1602 }
1603out:
1604 return;
1605out_failed:
1606 drv_cmd->state = MPI3MR_CMD_NOTUSED;
1607 drv_cmd->callback = NULL;
1608 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
1609 drv_cmd->retry_count = 0;
1610 clear_bit(cmd_idx, mrioc->devrem_bitmap);
1611}
1612
1613/**
1614 * mpi3mr_pcietopochg_evt_th - PCIETopologyChange evt tophalf
1615 * @mrioc: Adapter instance reference
1616 * @event_reply: event data
1617 *
1618 * Checks for the reason code and based on that either block I/O
1619 * to device, or unblock I/O to the device, or start the device
1620 * removal handshake with reason as remove with the firmware for
1621 * PCIe devices.
1622 *
1623 * Return: Nothing
1624 */
1625static void mpi3mr_pcietopochg_evt_th(struct mpi3mr_ioc *mrioc,
1626 struct mpi3_event_notification_reply *event_reply)
1627{
1628 struct mpi3_event_data_pcie_topology_change_list *topo_evt =
1629 (struct mpi3_event_data_pcie_topology_change_list *)event_reply->event_data;
1630 int i;
1631 u16 handle;
1632 u8 reason_code;
1633 struct mpi3mr_tgt_dev *tgtdev = NULL;
1634 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
1635
1636 for (i = 0; i < topo_evt->num_entries; i++) {
1637 handle = le16_to_cpu(topo_evt->port_entry[i].attached_dev_handle);
1638 if (!handle)
1639 continue;
1640 reason_code = topo_evt->port_entry[i].port_status;
1641 scsi_tgt_priv_data = NULL;
1642 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
1643 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
1644 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
1645 tgtdev->starget->hostdata;
1646 switch (reason_code) {
1647 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
1648 if (scsi_tgt_priv_data) {
1649 scsi_tgt_priv_data->dev_removed = 1;
1650 scsi_tgt_priv_data->dev_removedelay = 0;
1651 atomic_set(&scsi_tgt_priv_data->block_io, 0);
1652 }
1653 mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL,
1654 MPI3_CTRL_OP_REMOVE_DEVICE);
1655 break;
1656 case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING:
1657 if (scsi_tgt_priv_data) {
1658 scsi_tgt_priv_data->dev_removedelay = 1;
1659 atomic_inc(&scsi_tgt_priv_data->block_io);
1660 }
1661 break;
1662 case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING:
1663 if (scsi_tgt_priv_data &&
1664 scsi_tgt_priv_data->dev_removedelay) {
1665 scsi_tgt_priv_data->dev_removedelay = 0;
1666 atomic_dec_if_positive
1667 (&scsi_tgt_priv_data->block_io);
1668 }
1669 break;
1670 case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED:
1671 default:
1672 break;
1673 }
1674 if (tgtdev)
1675 mpi3mr_tgtdev_put(tgtdev);
1676 }
1677}
1678
1679/**
1680 * mpi3mr_sastopochg_evt_th - SASTopologyChange evt tophalf
1681 * @mrioc: Adapter instance reference
1682 * @event_reply: event data
1683 *
1684 * Checks for the reason code and based on that either block I/O
1685 * to device, or unblock I/O to the device, or start the device
1686 * removal handshake with reason as remove with the firmware for
1687 * SAS/SATA devices.
1688 *
1689 * Return: Nothing
1690 */
1691static void mpi3mr_sastopochg_evt_th(struct mpi3mr_ioc *mrioc,
1692 struct mpi3_event_notification_reply *event_reply)
1693{
1694 struct mpi3_event_data_sas_topology_change_list *topo_evt =
1695 (struct mpi3_event_data_sas_topology_change_list *)event_reply->event_data;
1696 int i;
1697 u16 handle;
1698 u8 reason_code;
1699 struct mpi3mr_tgt_dev *tgtdev = NULL;
1700 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
1701
1702 for (i = 0; i < topo_evt->num_entries; i++) {
1703 handle = le16_to_cpu(topo_evt->phy_entry[i].attached_dev_handle);
1704 if (!handle)
1705 continue;
1706 reason_code = topo_evt->phy_entry[i].status &
1707 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
1708 scsi_tgt_priv_data = NULL;
1709 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
1710 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
1711 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
1712 tgtdev->starget->hostdata;
1713 switch (reason_code) {
1714 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
1715 if (scsi_tgt_priv_data) {
1716 scsi_tgt_priv_data->dev_removed = 1;
1717 scsi_tgt_priv_data->dev_removedelay = 0;
1718 atomic_set(&scsi_tgt_priv_data->block_io, 0);
1719 }
1720 mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL,
1721 MPI3_CTRL_OP_REMOVE_DEVICE);
1722 break;
1723 case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING:
1724 if (scsi_tgt_priv_data) {
1725 scsi_tgt_priv_data->dev_removedelay = 1;
1726 atomic_inc(&scsi_tgt_priv_data->block_io);
1727 }
1728 break;
1729 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
1730 if (scsi_tgt_priv_data &&
1731 scsi_tgt_priv_data->dev_removedelay) {
1732 scsi_tgt_priv_data->dev_removedelay = 0;
1733 atomic_dec_if_positive
1734 (&scsi_tgt_priv_data->block_io);
1735 }
1736 break;
1737 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
1738 default:
1739 break;
1740 }
1741 if (tgtdev)
1742 mpi3mr_tgtdev_put(tgtdev);
1743 }
1744}
1745
1746/**
1747 * mpi3mr_devstatuschg_evt_th - DeviceStatusChange evt tophalf
1748 * @mrioc: Adapter instance reference
1749 * @event_reply: event data
1750 *
1751 * Checks for the reason code and based on that either block I/O
1752 * to device, or unblock I/O to the device, or start the device
1753 * removal handshake with reason as remove/hide acknowledgment
1754 * with the firmware.
1755 *
1756 * Return: Nothing
1757 */
1758static void mpi3mr_devstatuschg_evt_th(struct mpi3mr_ioc *mrioc,
1759 struct mpi3_event_notification_reply *event_reply)
1760{
1761 u16 dev_handle = 0;
1762 u8 ublock = 0, block = 0, hide = 0, delete = 0, remove = 0;
1763 struct mpi3mr_tgt_dev *tgtdev = NULL;
1764 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
1765 struct mpi3_event_data_device_status_change *evtdata =
1766 (struct mpi3_event_data_device_status_change *)event_reply->event_data;
1767
1768 if (mrioc->stop_drv_processing)
1769 goto out;
1770
1771 dev_handle = le16_to_cpu(evtdata->dev_handle);
1772
1773 switch (evtdata->reason_code) {
1774 case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_STRT:
1775 case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_STRT:
1776 block = 1;
1777 break;
1778 case MPI3_EVENT_DEV_STAT_RC_HIDDEN:
1779 delete = 1;
1780 hide = 1;
1781 break;
1782 case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING:
1783 delete = 1;
1784 remove = 1;
1785 break;
1786 case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_CMP:
1787 case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_CMP:
1788 ublock = 1;
1789 break;
1790 default:
1791 break;
1792 }
1793
1794 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
1795 if (!tgtdev)
1796 goto out;
1797 if (hide)
1798 tgtdev->is_hidden = hide;
1799 if (tgtdev->starget && tgtdev->starget->hostdata) {
1800 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
1801 tgtdev->starget->hostdata;
1802 if (block)
1803 atomic_inc(&scsi_tgt_priv_data->block_io);
1804 if (delete)
1805 scsi_tgt_priv_data->dev_removed = 1;
1806 if (ublock)
1807 atomic_dec_if_positive(&scsi_tgt_priv_data->block_io);
1808 }
1809 if (remove)
1810 mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL,
1811 MPI3_CTRL_OP_REMOVE_DEVICE);
1812 if (hide)
1813 mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL,
1814 MPI3_CTRL_OP_HIDDEN_ACK);
1815
1816out:
1817 if (tgtdev)
1818 mpi3mr_tgtdev_put(tgtdev);
1819}
1820
1821/**
1822 * mpi3mr_energypackchg_evt_th - Energy pack change evt tophalf
1823 * @mrioc: Adapter instance reference
1824 * @event_reply: event data
1825 *
1826 * Identifies the new shutdown timeout value and update.
1827 *
1828 * Return: Nothing
1829 */
1830static void mpi3mr_energypackchg_evt_th(struct mpi3mr_ioc *mrioc,
1831 struct mpi3_event_notification_reply *event_reply)
1832{
1833 struct mpi3_event_data_energy_pack_change *evtdata =
1834 (struct mpi3_event_data_energy_pack_change *)event_reply->event_data;
1835 u16 shutdown_timeout = le16_to_cpu(evtdata->shutdown_timeout);
1836
1837 if (shutdown_timeout <= 0) {
1838 ioc_warn(mrioc,
1839 "%s :Invalid Shutdown Timeout received = %d\n",
1840 __func__, shutdown_timeout);
1841 return;
1842 }
1843
1844 ioc_info(mrioc,
1845 "%s :Previous Shutdown Timeout Value = %d New Shutdown Timeout Value = %d\n",
1846 __func__, mrioc->facts.shutdown_timeout, shutdown_timeout);
1847 mrioc->facts.shutdown_timeout = shutdown_timeout;
1848}
1849
1850/**
1851 * mpi3mr_os_handle_events - Firmware event handler
1852 * @mrioc: Adapter instance reference
1853 * @event_reply: event data
1854 *
1855 * Identify whteher the event has to handled and acknowledged
1856 * and either process the event in the tophalf and/or schedule a
1857 * bottom half through mpi3mr_fwevt_worker.
1858 *
1859 * Return: Nothing
1860 */
1861void mpi3mr_os_handle_events(struct mpi3mr_ioc *mrioc,
1862 struct mpi3_event_notification_reply *event_reply)
1863{
1864 u16 evt_type, sz;
1865 struct mpi3mr_fwevt *fwevt = NULL;
1866 bool ack_req = 0, process_evt_bh = 0;
1867
1868 if (mrioc->stop_drv_processing)
1869 return;
1870
1871 if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK)
1872 == MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED)
1873 ack_req = 1;
1874
1875 evt_type = event_reply->event;
1876
1877 switch (evt_type) {
1878 case MPI3_EVENT_DEVICE_ADDED:
1879 {
1880 struct mpi3_device_page0 *dev_pg0 =
1881 (struct mpi3_device_page0 *)event_reply->event_data;
1882 if (mpi3mr_create_tgtdev(mrioc, dev_pg0))
1883 ioc_err(mrioc,
1884 "%s :Failed to add device in the device add event\n",
1885 __func__);
1886 else
1887 process_evt_bh = 1;
1888 break;
1889 }
1890 case MPI3_EVENT_DEVICE_STATUS_CHANGE:
1891 {
1892 process_evt_bh = 1;
1893 mpi3mr_devstatuschg_evt_th(mrioc, event_reply);
1894 break;
1895 }
1896 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
1897 {
1898 process_evt_bh = 1;
1899 mpi3mr_sastopochg_evt_th(mrioc, event_reply);
1900 break;
1901 }
1902 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
1903 {
1904 process_evt_bh = 1;
1905 mpi3mr_pcietopochg_evt_th(mrioc, event_reply);
1906 break;
1907 }
1908 case MPI3_EVENT_DEVICE_INFO_CHANGED:
1909 {
1910 process_evt_bh = 1;
1911 break;
1912 }
1913 case MPI3_EVENT_ENERGY_PACK_CHANGE:
1914 {
1915 mpi3mr_energypackchg_evt_th(mrioc, event_reply);
1916 break;
1917 }
1918 case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE:
1919 case MPI3_EVENT_SAS_DISCOVERY:
1920 case MPI3_EVENT_CABLE_MGMT:
1921 case MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR:
1922 case MPI3_EVENT_SAS_BROADCAST_PRIMITIVE:
1923 case MPI3_EVENT_PCIE_ENUMERATION:
1924 break;
1925 default:
1926 ioc_info(mrioc, "%s :event 0x%02x is not handled\n",
1927 __func__, evt_type);
1928 break;
1929 }
1930 if (process_evt_bh || ack_req) {
1931 sz = event_reply->event_data_length * 4;
1932 fwevt = mpi3mr_alloc_fwevt(sz);
1933 if (!fwevt) {
1934 ioc_info(mrioc, "%s :failure at %s:%d/%s()!\n",
1935 __func__, __FILE__, __LINE__, __func__);
1936 return;
1937 }
1938
1939 memcpy(fwevt->event_data, event_reply->event_data, sz);
1940 fwevt->mrioc = mrioc;
1941 fwevt->event_id = evt_type;
1942 fwevt->send_ack = ack_req;
1943 fwevt->process_evt = process_evt_bh;
1944 fwevt->evt_ctx = le32_to_cpu(event_reply->event_context);
1945 mpi3mr_fwevt_add_to_list(mrioc, fwevt);
1946 }
1947}
1948
1949/**
1950 * mpi3mr_setup_eedp - Setup EEDP information in MPI3 SCSI IO
1951 * @mrioc: Adapter instance reference
1952 * @scmd: SCSI command reference
1953 * @scsiio_req: MPI3 SCSI IO request
1954 *
1955 * Identifies the protection information flags from the SCSI
1956 * command and set appropriate flags in the MPI3 SCSI IO
1957 * request.
1958 *
1959 * Return: Nothing
1960 */
1961static void mpi3mr_setup_eedp(struct mpi3mr_ioc *mrioc,
1962 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
1963{
1964 u16 eedp_flags = 0;
1965 unsigned char prot_op = scsi_get_prot_op(scmd);
1966 unsigned char prot_type = scsi_get_prot_type(scmd);
1967
1968 switch (prot_op) {
1969 case SCSI_PROT_NORMAL:
1970 return;
1971 case SCSI_PROT_READ_STRIP:
1972 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE;
1973 break;
1974 case SCSI_PROT_WRITE_INSERT:
1975 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT;
1976 break;
1977 case SCSI_PROT_READ_INSERT:
1978 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT;
1979 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
1980 break;
1981 case SCSI_PROT_WRITE_STRIP:
1982 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE;
1983 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
1984 break;
1985 case SCSI_PROT_READ_PASS:
1986 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK |
1987 MPI3_EEDPFLAGS_CHK_REF_TAG | MPI3_EEDPFLAGS_CHK_APP_TAG |
1988 MPI3_EEDPFLAGS_CHK_GUARD;
1989 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
1990 break;
1991 case SCSI_PROT_WRITE_PASS:
1992 if (scsi_host_get_guard(scmd->device->host)
1993 & SHOST_DIX_GUARD_IP) {
1994 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REGEN |
1995 MPI3_EEDPFLAGS_CHK_APP_TAG |
1996 MPI3_EEDPFLAGS_CHK_GUARD |
1997 MPI3_EEDPFLAGS_INCR_PRI_REF_TAG;
1998 scsiio_req->sgl[0].eedp.application_tag_translation_mask =
1999 0xffff;
2000 } else {
2001 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK |
2002 MPI3_EEDPFLAGS_CHK_REF_TAG |
2003 MPI3_EEDPFLAGS_CHK_APP_TAG |
2004 MPI3_EEDPFLAGS_CHK_GUARD;
2005 }
2006 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2007 break;
2008 default:
2009 return;
2010 }
2011
2012 if (scsi_host_get_guard(scmd->device->host) & SHOST_DIX_GUARD_IP)
2013 eedp_flags |= MPI3_EEDPFLAGS_HOST_GUARD_IP_CHKSUM;
2014
2015 switch (prot_type) {
2016 case SCSI_PROT_DIF_TYPE0:
2017 eedp_flags |= MPI3_EEDPFLAGS_INCR_PRI_REF_TAG;
2018 scsiio_req->cdb.eedp32.primary_reference_tag =
2019 cpu_to_be32(t10_pi_ref_tag(scmd->request));
2020 break;
2021 case SCSI_PROT_DIF_TYPE1:
2022 case SCSI_PROT_DIF_TYPE2:
2023 eedp_flags |= MPI3_EEDPFLAGS_INCR_PRI_REF_TAG |
2024 MPI3_EEDPFLAGS_ESC_MODE_APPTAG_DISABLE |
2025 MPI3_EEDPFLAGS_CHK_GUARD;
2026 scsiio_req->cdb.eedp32.primary_reference_tag =
2027 cpu_to_be32(t10_pi_ref_tag(scmd->request));
2028 break;
2029 case SCSI_PROT_DIF_TYPE3:
2030 eedp_flags |= MPI3_EEDPFLAGS_CHK_GUARD |
2031 MPI3_EEDPFLAGS_ESC_MODE_APPTAG_DISABLE;
2032 break;
2033
2034 default:
2035 scsiio_req->msg_flags &= ~(MPI3_SCSIIO_MSGFLAGS_METASGL_VALID);
2036 return;
2037 }
2038
2039 switch (scmd->device->sector_size) {
2040 case 512:
2041 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_512;
2042 break;
2043 case 520:
2044 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_520;
2045 break;
2046 case 4080:
2047 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4080;
2048 break;
2049 case 4088:
2050 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4088;
2051 break;
2052 case 4096:
2053 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4096;
2054 break;
2055 case 4104:
2056 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4104;
2057 break;
2058 case 4160:
2059 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4160;
2060 break;
2061 default:
2062 break;
2063 }
2064
2065 scsiio_req->sgl[0].eedp.eedp_flags = cpu_to_le16(eedp_flags);
2066 scsiio_req->sgl[0].eedp.flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED;
2067}
2068
2069/**
2070 * mpi3mr_build_sense_buffer - Map sense information
2071 * @desc: Sense type
2072 * @buf: Sense buffer to populate
2073 * @key: Sense key
2074 * @asc: Additional sense code
2075 * @ascq: Additional sense code qualifier
2076 *
2077 * Maps the given sense information into either descriptor or
2078 * fixed format sense data.
2079 *
2080 * Return: Nothing
2081 */
2082static inline void mpi3mr_build_sense_buffer(int desc, u8 *buf, u8 key,
2083 u8 asc, u8 ascq)
2084{
2085 if (desc) {
2086 buf[0] = 0x72; /* descriptor, current */
2087 buf[1] = key;
2088 buf[2] = asc;
2089 buf[3] = ascq;
2090 buf[7] = 0;
2091 } else {
2092 buf[0] = 0x70; /* fixed, current */
2093 buf[2] = key;
2094 buf[7] = 0xa;
2095 buf[12] = asc;
2096 buf[13] = ascq;
2097 }
2098}
2099
2100/**
2101 * mpi3mr_map_eedp_error - Map EEDP errors from IOC status
2102 * @scmd: SCSI command reference
2103 * @ioc_status: status of MPI3 request
2104 *
2105 * Maps the EEDP error status of the SCSI IO request to sense
2106 * data.
2107 *
2108 * Return: Nothing
2109 */
2110static void mpi3mr_map_eedp_error(struct scsi_cmnd *scmd,
2111 u16 ioc_status)
2112{
2113 u8 ascq = 0;
2114
2115 switch (ioc_status) {
2116 case MPI3_IOCSTATUS_EEDP_GUARD_ERROR:
2117 ascq = 0x01;
2118 break;
2119 case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR:
2120 ascq = 0x02;
2121 break;
2122 case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR:
2123 ascq = 0x03;
2124 break;
2125 default:
2126 ascq = 0x00;
2127 break;
2128 }
2129
2130 mpi3mr_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
2131 0x10, ascq);
2132 scmd->result = (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
2133}
2134
2135/**
2136 * mpi3mr_process_op_reply_desc - reply descriptor handler
2137 * @mrioc: Adapter instance reference
2138 * @reply_desc: Operational reply descriptor
2139 * @reply_dma: place holder for reply DMA address
2140 * @qidx: Operational queue index
2141 *
2142 * Process the operational reply descriptor and identifies the
2143 * descriptor type. Based on the descriptor map the MPI3 request
2144 * status to a SCSI command status and calls scsi_done call
2145 * back.
2146 *
2147 * Return: Nothing
2148 */
2149void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc,
2150 struct mpi3_default_reply_descriptor *reply_desc, u64 *reply_dma, u16 qidx)
2151{
2152 u16 reply_desc_type, host_tag = 0;
2153 u16 ioc_status = MPI3_IOCSTATUS_SUCCESS;
2154 u32 ioc_loginfo = 0;
2155 struct mpi3_status_reply_descriptor *status_desc = NULL;
2156 struct mpi3_address_reply_descriptor *addr_desc = NULL;
2157 struct mpi3_success_reply_descriptor *success_desc = NULL;
2158 struct mpi3_scsi_io_reply *scsi_reply = NULL;
2159 struct scsi_cmnd *scmd = NULL;
2160 struct scmd_priv *priv = NULL;
2161 u8 *sense_buf = NULL;
2162 u8 scsi_state = 0, scsi_status = 0, sense_state = 0;
2163 u32 xfer_count = 0, sense_count = 0, resp_data = 0;
2164 u16 dev_handle = 0xFFFF;
2165 struct scsi_sense_hdr sshdr;
2166
2167 *reply_dma = 0;
2168 reply_desc_type = le16_to_cpu(reply_desc->reply_flags) &
2169 MPI3_REPLY_DESCRIPT_FLAGS_TYPE_MASK;
2170 switch (reply_desc_type) {
2171 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_STATUS:
2172 status_desc = (struct mpi3_status_reply_descriptor *)reply_desc;
2173 host_tag = le16_to_cpu(status_desc->host_tag);
2174 ioc_status = le16_to_cpu(status_desc->ioc_status);
2175 if (ioc_status &
2176 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
2177 ioc_loginfo = le32_to_cpu(status_desc->ioc_log_info);
2178 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
2179 break;
2180 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_ADDRESS_REPLY:
2181 addr_desc = (struct mpi3_address_reply_descriptor *)reply_desc;
2182 *reply_dma = le64_to_cpu(addr_desc->reply_frame_address);
2183 scsi_reply = mpi3mr_get_reply_virt_addr(mrioc,
2184 *reply_dma);
2185 if (!scsi_reply) {
2186 panic("%s: scsi_reply is NULL, this shouldn't happen\n",
2187 mrioc->name);
2188 goto out;
2189 }
2190 host_tag = le16_to_cpu(scsi_reply->host_tag);
2191 ioc_status = le16_to_cpu(scsi_reply->ioc_status);
2192 scsi_status = scsi_reply->scsi_status;
2193 scsi_state = scsi_reply->scsi_state;
2194 dev_handle = le16_to_cpu(scsi_reply->dev_handle);
2195 sense_state = (scsi_state & MPI3_SCSI_STATE_SENSE_MASK);
2196 xfer_count = le32_to_cpu(scsi_reply->transfer_count);
2197 sense_count = le32_to_cpu(scsi_reply->sense_count);
2198 resp_data = le32_to_cpu(scsi_reply->response_data);
2199 sense_buf = mpi3mr_get_sensebuf_virt_addr(mrioc,
2200 le64_to_cpu(scsi_reply->sense_data_buffer_address));
2201 if (ioc_status &
2202 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
2203 ioc_loginfo = le32_to_cpu(scsi_reply->ioc_log_info);
2204 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
2205 if (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY)
2206 panic("%s: Ran out of sense buffers\n", mrioc->name);
2207 break;
2208 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_SUCCESS:
2209 success_desc = (struct mpi3_success_reply_descriptor *)reply_desc;
2210 host_tag = le16_to_cpu(success_desc->host_tag);
2211 break;
2212 default:
2213 break;
2214 }
2215 scmd = mpi3mr_scmd_from_host_tag(mrioc, host_tag, qidx);
2216 if (!scmd) {
2217 panic("%s: Cannot Identify scmd for host_tag 0x%x\n",
2218 mrioc->name, host_tag);
2219 goto out;
2220 }
2221 priv = scsi_cmd_priv(scmd);
2222 if (success_desc) {
2223 scmd->result = DID_OK << 16;
2224 goto out_success;
2225 }
2226 if (ioc_status == MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN &&
2227 xfer_count == 0 && (scsi_status == MPI3_SCSI_STATUS_BUSY ||
2228 scsi_status == MPI3_SCSI_STATUS_RESERVATION_CONFLICT ||
2229 scsi_status == MPI3_SCSI_STATUS_TASK_SET_FULL))
2230 ioc_status = MPI3_IOCSTATUS_SUCCESS;
2231
2232 if ((sense_state == MPI3_SCSI_STATE_SENSE_VALID) && sense_count &&
2233 sense_buf) {
2234 u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE, sense_count);
2235
2236 memcpy(scmd->sense_buffer, sense_buf, sz);
2237 }
2238
2239 switch (ioc_status) {
2240 case MPI3_IOCSTATUS_BUSY:
2241 case MPI3_IOCSTATUS_INSUFFICIENT_RESOURCES:
2242 scmd->result = SAM_STAT_BUSY;
2243 break;
2244 case MPI3_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
2245 scmd->result = DID_NO_CONNECT << 16;
2246 break;
2247 case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED:
2248 scmd->result = DID_SOFT_ERROR << 16;
2249 break;
2250 case MPI3_IOCSTATUS_SCSI_TASK_TERMINATED:
2251 case MPI3_IOCSTATUS_SCSI_EXT_TERMINATED:
2252 scmd->result = DID_RESET << 16;
2253 break;
2254 case MPI3_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
2255 if ((xfer_count == 0) || (scmd->underflow > xfer_count))
2256 scmd->result = DID_SOFT_ERROR << 16;
2257 else
2258 scmd->result = (DID_OK << 16) | scsi_status;
2259 break;
2260 case MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN:
2261 scmd->result = (DID_OK << 16) | scsi_status;
2262 if (sense_state == MPI3_SCSI_STATE_SENSE_VALID)
2263 break;
2264 if (xfer_count < scmd->underflow) {
2265 if (scsi_status == SAM_STAT_BUSY)
2266 scmd->result = SAM_STAT_BUSY;
2267 else
2268 scmd->result = DID_SOFT_ERROR << 16;
2269 } else if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
2270 (sense_state != MPI3_SCSI_STATE_SENSE_NOT_AVAILABLE))
2271 scmd->result = DID_SOFT_ERROR << 16;
2272 else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
2273 scmd->result = DID_RESET << 16;
2274 break;
2275 case MPI3_IOCSTATUS_SCSI_DATA_OVERRUN:
2276 scsi_set_resid(scmd, 0);
2277 fallthrough;
2278 case MPI3_IOCSTATUS_SCSI_RECOVERED_ERROR:
2279 case MPI3_IOCSTATUS_SUCCESS:
2280 scmd->result = (DID_OK << 16) | scsi_status;
2281 if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
2282 (sense_state == MPI3_SCSI_STATE_SENSE_FAILED) ||
2283 (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY))
2284 scmd->result = DID_SOFT_ERROR << 16;
2285 else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
2286 scmd->result = DID_RESET << 16;
2287 break;
2288 case MPI3_IOCSTATUS_EEDP_GUARD_ERROR:
2289 case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR:
2290 case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR:
2291 mpi3mr_map_eedp_error(scmd, ioc_status);
2292 break;
2293 case MPI3_IOCSTATUS_SCSI_PROTOCOL_ERROR:
2294 case MPI3_IOCSTATUS_INVALID_FUNCTION:
2295 case MPI3_IOCSTATUS_INVALID_SGL:
2296 case MPI3_IOCSTATUS_INTERNAL_ERROR:
2297 case MPI3_IOCSTATUS_INVALID_FIELD:
2298 case MPI3_IOCSTATUS_INVALID_STATE:
2299 case MPI3_IOCSTATUS_SCSI_IO_DATA_ERROR:
2300 case MPI3_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
2301 case MPI3_IOCSTATUS_INSUFFICIENT_POWER:
2302 default:
2303 scmd->result = DID_SOFT_ERROR << 16;
2304 break;
2305 }
2306
2307 if (scmd->result != (DID_OK << 16) && (scmd->cmnd[0] != ATA_12) &&
2308 (scmd->cmnd[0] != ATA_16)) {
2309 ioc_info(mrioc, "%s :scmd->result 0x%x\n", __func__,
2310 scmd->result);
2311 scsi_print_command(scmd);
2312 ioc_info(mrioc,
2313 "%s :Command issued to handle 0x%02x returned with error 0x%04x loginfo 0x%08x, qid %d\n",
2314 __func__, dev_handle, ioc_status, ioc_loginfo,
2315 priv->req_q_idx + 1);
2316 ioc_info(mrioc,
2317 " host_tag %d scsi_state 0x%02x scsi_status 0x%02x, xfer_cnt %d resp_data 0x%x\n",
2318 host_tag, scsi_state, scsi_status, xfer_count, resp_data);
2319 if (sense_buf) {
2320 scsi_normalize_sense(sense_buf, sense_count, &sshdr);
2321 ioc_info(mrioc,
2322 "%s :sense_count 0x%x, sense_key 0x%x ASC 0x%x, ASCQ 0x%x\n",
2323 __func__, sense_count, sshdr.sense_key,
2324 sshdr.asc, sshdr.ascq);
2325 }
2326 }
2327out_success:
2328 if (priv->meta_sg_valid) {
2329 dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd),
2330 scsi_prot_sg_count(scmd), scmd->sc_data_direction);
2331 }
2332 mpi3mr_clear_scmd_priv(mrioc, scmd);
2333 scsi_dma_unmap(scmd);
2334 scmd->scsi_done(scmd);
2335out:
2336 if (sense_buf)
2337 mpi3mr_repost_sense_buf(mrioc,
2338 le64_to_cpu(scsi_reply->sense_data_buffer_address));
2339}
2340
2341/**
2342 * mpi3mr_get_chain_idx - get free chain buffer index
2343 * @mrioc: Adapter instance reference
2344 *
2345 * Try to get a free chain buffer index from the free pool.
2346 *
2347 * Return: -1 on failure or the free chain buffer index
2348 */
2349static int mpi3mr_get_chain_idx(struct mpi3mr_ioc *mrioc)
2350{
2351 u8 retry_count = 5;
2352 int cmd_idx = -1;
2353
2354 do {
2355 spin_lock(&mrioc->chain_buf_lock);
2356 cmd_idx = find_first_zero_bit(mrioc->chain_bitmap,
2357 mrioc->chain_buf_count);
2358 if (cmd_idx < mrioc->chain_buf_count) {
2359 set_bit(cmd_idx, mrioc->chain_bitmap);
2360 spin_unlock(&mrioc->chain_buf_lock);
2361 break;
2362 }
2363 spin_unlock(&mrioc->chain_buf_lock);
2364 cmd_idx = -1;
2365 } while (retry_count--);
2366 return cmd_idx;
2367}
2368
2369/**
2370 * mpi3mr_prepare_sg_scmd - build scatter gather list
2371 * @mrioc: Adapter instance reference
2372 * @scmd: SCSI command reference
2373 * @scsiio_req: MPI3 SCSI IO request
2374 *
2375 * This function maps SCSI command's data and protection SGEs to
2376 * MPI request SGEs. If required additional 4K chain buffer is
2377 * used to send the SGEs.
2378 *
2379 * Return: 0 on success, -ENOMEM on dma_map_sg failure
2380 */
2381static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc,
2382 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
2383{
2384 dma_addr_t chain_dma;
2385 struct scatterlist *sg_scmd;
2386 void *sg_local, *chain;
2387 u32 chain_length;
2388 int sges_left, chain_idx;
2389 u32 sges_in_segment;
2390 u8 simple_sgl_flags;
2391 u8 simple_sgl_flags_last;
2392 u8 last_chain_sgl_flags;
2393 struct chain_element *chain_req;
2394 struct scmd_priv *priv = NULL;
2395 u32 meta_sg = le32_to_cpu(scsiio_req->flags) &
2396 MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI;
2397
2398 priv = scsi_cmd_priv(scmd);
2399
2400 simple_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE |
2401 MPI3_SGE_FLAGS_DLAS_SYSTEM;
2402 simple_sgl_flags_last = simple_sgl_flags |
2403 MPI3_SGE_FLAGS_END_OF_LIST;
2404 last_chain_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_LAST_CHAIN |
2405 MPI3_SGE_FLAGS_DLAS_SYSTEM;
2406
2407 if (meta_sg)
2408 sg_local = &scsiio_req->sgl[MPI3_SCSIIO_METASGL_INDEX];
2409 else
2410 sg_local = &scsiio_req->sgl;
2411
2412 if (!scsiio_req->data_length && !meta_sg) {
2413 mpi3mr_build_zero_len_sge(sg_local);
2414 return 0;
2415 }
2416
2417 if (meta_sg) {
2418 sg_scmd = scsi_prot_sglist(scmd);
2419 sges_left = dma_map_sg(&mrioc->pdev->dev,
2420 scsi_prot_sglist(scmd),
2421 scsi_prot_sg_count(scmd),
2422 scmd->sc_data_direction);
2423 priv->meta_sg_valid = 1; /* To unmap meta sg DMA */
2424 } else {
2425 sg_scmd = scsi_sglist(scmd);
2426 sges_left = scsi_dma_map(scmd);
2427 }
2428
2429 if (sges_left < 0) {
2430 sdev_printk(KERN_ERR, scmd->device,
2431 "scsi_dma_map failed: request for %d bytes!\n",
2432 scsi_bufflen(scmd));
2433 return -ENOMEM;
2434 }
2435 if (sges_left > MPI3MR_SG_DEPTH) {
2436 sdev_printk(KERN_ERR, scmd->device,
2437 "scsi_dma_map returned unsupported sge count %d!\n",
2438 sges_left);
2439 return -ENOMEM;
2440 }
2441
2442 sges_in_segment = (mrioc->facts.op_req_sz -
2443 offsetof(struct mpi3_scsi_io_request, sgl)) / sizeof(struct mpi3_sge_common);
2444
2445 if (scsiio_req->sgl[0].eedp.flags ==
2446 MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED && !meta_sg) {
2447 sg_local += sizeof(struct mpi3_sge_common);
2448 sges_in_segment--;
2449 /* Reserve 1st segment (scsiio_req->sgl[0]) for eedp */
2450 }
2451
2452 if (scsiio_req->msg_flags ==
2453 MPI3_SCSIIO_MSGFLAGS_METASGL_VALID && !meta_sg) {
2454 sges_in_segment--;
2455 /* Reserve last segment (scsiio_req->sgl[3]) for meta sg */
2456 }
2457
2458 if (meta_sg)
2459 sges_in_segment = 1;
2460
2461 if (sges_left <= sges_in_segment)
2462 goto fill_in_last_segment;
2463
2464 /* fill in main message segment when there is a chain following */
2465 while (sges_in_segment > 1) {
2466 mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
2467 sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
2468 sg_scmd = sg_next(sg_scmd);
2469 sg_local += sizeof(struct mpi3_sge_common);
2470 sges_left--;
2471 sges_in_segment--;
2472 }
2473
2474 chain_idx = mpi3mr_get_chain_idx(mrioc);
2475 if (chain_idx < 0)
2476 return -1;
2477 chain_req = &mrioc->chain_sgl_list[chain_idx];
2478 if (meta_sg)
2479 priv->meta_chain_idx = chain_idx;
2480 else
2481 priv->chain_idx = chain_idx;
2482
2483 chain = chain_req->addr;
2484 chain_dma = chain_req->dma_addr;
2485 sges_in_segment = sges_left;
2486 chain_length = sges_in_segment * sizeof(struct mpi3_sge_common);
2487
2488 mpi3mr_add_sg_single(sg_local, last_chain_sgl_flags,
2489 chain_length, chain_dma);
2490
2491 sg_local = chain;
2492
2493fill_in_last_segment:
2494 while (sges_left > 0) {
2495 if (sges_left == 1)
2496 mpi3mr_add_sg_single(sg_local,
2497 simple_sgl_flags_last, sg_dma_len(sg_scmd),
2498 sg_dma_address(sg_scmd));
2499 else
2500 mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
2501 sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
2502 sg_scmd = sg_next(sg_scmd);
2503 sg_local += sizeof(struct mpi3_sge_common);
2504 sges_left--;
2505 }
2506
2507 return 0;
2508}
2509
2510/**
2511 * mpi3mr_build_sg_scmd - build scatter gather list for SCSI IO
2512 * @mrioc: Adapter instance reference
2513 * @scmd: SCSI command reference
2514 * @scsiio_req: MPI3 SCSI IO request
2515 *
2516 * This function calls mpi3mr_prepare_sg_scmd for constructing
2517 * both data SGEs and protection information SGEs in the MPI
2518 * format from the SCSI Command as appropriate .
2519 *
2520 * Return: return value of mpi3mr_prepare_sg_scmd.
2521 */
2522static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc,
2523 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
2524{
2525 int ret;
2526
2527 ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
2528 if (ret)
2529 return ret;
2530
2531 if (scsiio_req->msg_flags == MPI3_SCSIIO_MSGFLAGS_METASGL_VALID) {
2532 /* There is a valid meta sg */
2533 scsiio_req->flags |=
2534 cpu_to_le32(MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI);
2535 ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
2536 }
2537
2538 return ret;
2539}
2540
2541/**
2542 * mpi3mr_print_response_code - print TM response as a string
2543 * @mrioc: Adapter instance reference
2544 * @resp_code: TM response code
2545 *
2546 * Print TM response code as a readable string.
2547 *
2548 * Return: Nothing.
2549 */
2550static void mpi3mr_print_response_code(struct mpi3mr_ioc *mrioc, u8 resp_code)
2551{
2552 char *desc;
2553
2554 switch (resp_code) {
2555 case MPI3MR_RSP_TM_COMPLETE:
2556 desc = "task management request completed";
2557 break;
2558 case MPI3MR_RSP_INVALID_FRAME:
2559 desc = "invalid frame";
2560 break;
2561 case MPI3MR_RSP_TM_NOT_SUPPORTED:
2562 desc = "task management request not supported";
2563 break;
2564 case MPI3MR_RSP_TM_FAILED:
2565 desc = "task management request failed";
2566 break;
2567 case MPI3MR_RSP_TM_SUCCEEDED:
2568 desc = "task management request succeeded";
2569 break;
2570 case MPI3MR_RSP_TM_INVALID_LUN:
2571 desc = "invalid lun";
2572 break;
2573 case MPI3MR_RSP_TM_OVERLAPPED_TAG:
2574 desc = "overlapped tag attempted";
2575 break;
2576 case MPI3MR_RSP_IO_QUEUED_ON_IOC:
2577 desc = "task queued, however not sent to target";
2578 break;
2579 default:
2580 desc = "unknown";
2581 break;
2582 }
2583 ioc_info(mrioc, "%s :response_code(0x%01x): %s\n", __func__,
2584 resp_code, desc);
2585}
2586
2587/**
2588 * mpi3mr_issue_tm - Issue Task Management request
2589 * @mrioc: Adapter instance reference
2590 * @tm_type: Task Management type
2591 * @handle: Device handle
2592 * @lun: lun ID
2593 * @htag: Host tag of the TM request
2594 * @drv_cmd: Internal command tracker
2595 * @resp_code: Response code place holder
2596 * @cmd_priv: SCSI command private data
2597 *
2598 * Issues a Task Management Request to the controller for a
2599 * specified target, lun and command and wait for its completion
2600 * and check TM response. Recover the TM if it timed out by
2601 * issuing controller reset.
2602 *
2603 * Return: 0 on success, non-zero on errors
2604 */
2605static int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type,
2606 u16 handle, uint lun, u16 htag, ulong timeout,
2607 struct mpi3mr_drv_cmd *drv_cmd,
2608 u8 *resp_code, struct scmd_priv *cmd_priv)
2609{
2610 struct mpi3_scsi_task_mgmt_request tm_req;
2611 struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL;
2612 int retval = 0;
2613 struct mpi3mr_tgt_dev *tgtdev = NULL;
2614 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
2615 struct op_req_qinfo *op_req_q = NULL;
2616
2617 ioc_info(mrioc, "%s :Issue TM: TM type (0x%x) for devhandle 0x%04x\n",
2618 __func__, tm_type, handle);
2619 if (mrioc->unrecoverable) {
2620 retval = -1;
2621 ioc_err(mrioc, "%s :Issue TM: Unrecoverable controller\n",
2622 __func__);
2623 goto out;
2624 }
2625
2626 memset(&tm_req, 0, sizeof(tm_req));
2627 mutex_lock(&drv_cmd->mutex);
2628 if (drv_cmd->state & MPI3MR_CMD_PENDING) {
2629 retval = -1;
2630 ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__);
2631 mutex_unlock(&drv_cmd->mutex);
2632 goto out;
2633 }
2634 if (mrioc->reset_in_progress) {
2635 retval = -1;
2636 ioc_err(mrioc, "%s :Issue TM: Reset in progress\n", __func__);
2637 mutex_unlock(&drv_cmd->mutex);
2638 goto out;
2639 }
2640
2641 drv_cmd->state = MPI3MR_CMD_PENDING;
2642 drv_cmd->is_waiting = 1;
2643 drv_cmd->callback = NULL;
2644 tm_req.dev_handle = cpu_to_le16(handle);
2645 tm_req.task_type = tm_type;
2646 tm_req.host_tag = cpu_to_le16(htag);
2647
2648 int_to_scsilun(lun, (struct scsi_lun *)tm_req.lun);
2649 tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT;
2650
2651 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
2652 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata) {
2653 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
2654 tgtdev->starget->hostdata;
2655 atomic_inc(&scsi_tgt_priv_data->block_io);
2656 }
2657 if (cmd_priv) {
2658 op_req_q = &mrioc->req_qinfo[cmd_priv->req_q_idx];
2659 tm_req.task_host_tag = cpu_to_le16(cmd_priv->host_tag);
2660 tm_req.task_request_queue_id = cpu_to_le16(op_req_q->qid);
2661 }
2662 if (tgtdev && (tgtdev->dev_type == MPI3_DEVICE_DEVFORM_PCIE)) {
2663 if (cmd_priv && tgtdev->dev_spec.pcie_inf.abort_to)
2664 timeout = tgtdev->dev_spec.pcie_inf.abort_to;
2665 else if (!cmd_priv && tgtdev->dev_spec.pcie_inf.reset_to)
2666 timeout = tgtdev->dev_spec.pcie_inf.reset_to;
2667 }
2668
2669 init_completion(&drv_cmd->done);
2670 retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1);
2671 if (retval) {
2672 ioc_err(mrioc, "%s :Issue TM: Admin Post failed\n", __func__);
2673 goto out_unlock;
2674 }
2675 wait_for_completion_timeout(&drv_cmd->done, (timeout * HZ));
2676
2677 if (!(drv_cmd->state & MPI3MR_CMD_COMPLETE)) {
2678 ioc_err(mrioc, "%s :Issue TM: command timed out\n", __func__);
2679 drv_cmd->is_waiting = 0;
2680 retval = -1;
2681 mpi3mr_soft_reset_handler(mrioc,
2682 MPI3MR_RESET_FROM_TM_TIMEOUT, 1);
2683 goto out_unlock;
2684 }
2685
2686 if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID)
2687 tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
2688
2689 if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
2690 ioc_err(mrioc,
2691 "%s :Issue TM: handle(0x%04x) Failed ioc_status(0x%04x) Loginfo(0x%08x)\n",
2692 __func__, handle, drv_cmd->ioc_status,
2693 drv_cmd->ioc_loginfo);
2694 retval = -1;
2695 goto out_unlock;
2696 }
2697
2698 if (!tm_reply) {
2699 ioc_err(mrioc, "%s :Issue TM: No TM Reply message\n", __func__);
2700 retval = -1;
2701 goto out_unlock;
2702 }
2703
2704 *resp_code = le32_to_cpu(tm_reply->response_data) &
2705 MPI3MR_RI_MASK_RESPCODE;
2706 switch (*resp_code) {
2707 case MPI3MR_RSP_TM_SUCCEEDED:
2708 case MPI3MR_RSP_TM_COMPLETE:
2709 break;
2710 case MPI3MR_RSP_IO_QUEUED_ON_IOC:
2711 if (tm_type != MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
2712 retval = -1;
2713 break;
2714 default:
2715 retval = -1;
2716 break;
2717 }
2718
2719 ioc_info(mrioc,
2720 "%s :Issue TM: Completed TM type (0x%x) handle(0x%04x) ",
2721 __func__, tm_type, handle);
2722 ioc_info(mrioc,
2723 "with ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n",
2724 drv_cmd->ioc_status, drv_cmd->ioc_loginfo,
2725 le32_to_cpu(tm_reply->termination_count));
2726 mpi3mr_print_response_code(mrioc, *resp_code);
2727
2728out_unlock:
2729 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2730 mutex_unlock(&drv_cmd->mutex);
2731 if (scsi_tgt_priv_data)
2732 atomic_dec_if_positive(&scsi_tgt_priv_data->block_io);
2733 if (tgtdev)
2734 mpi3mr_tgtdev_put(tgtdev);
2735 if (!retval) {
2736 /*
2737 * Flush all IRQ handlers by calling synchronize_irq().
2738 * mpi3mr_ioc_disable_intr() takes care of it.
2739 */
2740 mpi3mr_ioc_disable_intr(mrioc);
2741 mpi3mr_ioc_enable_intr(mrioc);
2742 }
2743out:
2744 return retval;
2745}
2746
2747/**
2748 * mpi3mr_bios_param - BIOS param callback
2749 * @sdev: SCSI device reference
2750 * @bdev: Block device reference
2751 * @capacity: Capacity in logical sectors
2752 * @params: Parameter array
2753 *
2754 * Just the parameters with heads/secots/cylinders.
2755 *
2756 * Return: 0 always
2757 */
2758static int mpi3mr_bios_param(struct scsi_device *sdev,
2759 struct block_device *bdev, sector_t capacity, int params[])
2760{
2761 int heads;
2762 int sectors;
2763 sector_t cylinders;
2764 ulong dummy;
2765
2766 heads = 64;
2767 sectors = 32;
2768
2769 dummy = heads * sectors;
2770 cylinders = capacity;
2771 sector_div(cylinders, dummy);
2772
2773 if ((ulong)capacity >= 0x200000) {
2774 heads = 255;
2775 sectors = 63;
2776 dummy = heads * sectors;
2777 cylinders = capacity;
2778 sector_div(cylinders, dummy);
2779 }
2780
2781 params[0] = heads;
2782 params[1] = sectors;
2783 params[2] = cylinders;
2784 return 0;
2785}
2786
2787/**
2788 * mpi3mr_map_queues - Map queues callback handler
2789 * @shost: SCSI host reference
2790 *
2791 * Call the blk_mq_pci_map_queues with from which operational
2792 * queue the mapping has to be done
2793 *
2794 * Return: return of blk_mq_pci_map_queues
2795 */
2796static int mpi3mr_map_queues(struct Scsi_Host *shost)
2797{
2798 struct mpi3mr_ioc *mrioc = shost_priv(shost);
2799
2800 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
2801 mrioc->pdev, mrioc->op_reply_q_offset);
2802}
2803
2804/**
2805 * mpi3mr_get_fw_pending_ios - Calculate pending I/O count
2806 * @mrioc: Adapter instance reference
2807 *
2808 * Calculate the pending I/Os for the controller and return.
2809 *
2810 * Return: Number of pending I/Os
2811 */
2812static inline int mpi3mr_get_fw_pending_ios(struct mpi3mr_ioc *mrioc)
2813{
2814 u16 i;
2815 uint pend_ios = 0;
2816
2817 for (i = 0; i < mrioc->num_op_reply_q; i++)
2818 pend_ios += atomic_read(&mrioc->op_reply_qinfo[i].pend_ios);
2819 return pend_ios;
2820}
2821
2822/**
2823 * mpi3mr_print_pending_host_io - print pending I/Os
2824 * @mrioc: Adapter instance reference
2825 *
2826 * Print number of pending I/Os and each I/O details prior to
2827 * reset for debug purpose.
2828 *
2829 * Return: Nothing
2830 */
2831static void mpi3mr_print_pending_host_io(struct mpi3mr_ioc *mrioc)
2832{
2833 struct Scsi_Host *shost = mrioc->shost;
2834
2835 ioc_info(mrioc, "%s :Pending commands prior to reset: %d\n",
2836 __func__, mpi3mr_get_fw_pending_ios(mrioc));
2837 blk_mq_tagset_busy_iter(&shost->tag_set,
2838 mpi3mr_print_scmd, (void *)mrioc);
2839}
2840
2841/**
2842 * mpi3mr_wait_for_host_io - block for I/Os to complete
2843 * @mrioc: Adapter instance reference
2844 * @timeout: time out in seconds
2845 * Waits for pending I/Os for the given adapter to complete or
2846 * to hit the timeout.
2847 *
2848 * Return: Nothing
2849 */
2850void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout)
2851{
2852 enum mpi3mr_iocstate iocstate;
2853 int i = 0;
2854
2855 iocstate = mpi3mr_get_iocstate(mrioc);
2856 if (iocstate != MRIOC_STATE_READY)
2857 return;
2858
2859 if (!mpi3mr_get_fw_pending_ios(mrioc))
2860 return;
2861 ioc_info(mrioc,
2862 "%s :Waiting for %d seconds prior to reset for %d I/O\n",
2863 __func__, timeout, mpi3mr_get_fw_pending_ios(mrioc));
2864
2865 for (i = 0; i < timeout; i++) {
2866 if (!mpi3mr_get_fw_pending_ios(mrioc))
2867 break;
2868 iocstate = mpi3mr_get_iocstate(mrioc);
2869 if (iocstate != MRIOC_STATE_READY)
2870 break;
2871 msleep(1000);
2872 }
2873
2874 ioc_info(mrioc, "%s :Pending I/Os after wait is: %d\n", __func__,
2875 mpi3mr_get_fw_pending_ios(mrioc));
2876}
2877
2878/**
2879 * mpi3mr_eh_host_reset - Host reset error handling callback
2880 * @scmd: SCSI command reference
2881 *
2882 * Issue controller reset if the scmd is for a Physical Device,
2883 * if the scmd is for RAID volume, then wait for
2884 * MPI3MR_RAID_ERRREC_RESET_TIMEOUT and checke whether any
2885 * pending I/Os prior to issuing reset to the controller.
2886 *
2887 * Return: SUCCESS of successful reset else FAILED
2888 */
2889static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd)
2890{
2891 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
2892 struct mpi3mr_stgt_priv_data *stgt_priv_data;
2893 struct mpi3mr_sdev_priv_data *sdev_priv_data;
2894 u8 dev_type = MPI3_DEVICE_DEVFORM_VD;
2895 int retval = FAILED, ret;
2896
2897 sdev_priv_data = scmd->device->hostdata;
2898 if (sdev_priv_data && sdev_priv_data->tgt_priv_data) {
2899 stgt_priv_data = sdev_priv_data->tgt_priv_data;
2900 dev_type = stgt_priv_data->dev_type;
2901 }
2902
2903 if (dev_type == MPI3_DEVICE_DEVFORM_VD) {
2904 mpi3mr_wait_for_host_io(mrioc,
2905 MPI3MR_RAID_ERRREC_RESET_TIMEOUT);
2906 if (!mpi3mr_get_fw_pending_ios(mrioc)) {
2907 retval = SUCCESS;
2908 goto out;
2909 }
2910 }
2911
2912 mpi3mr_print_pending_host_io(mrioc);
2913 ret = mpi3mr_soft_reset_handler(mrioc,
2914 MPI3MR_RESET_FROM_EH_HOS, 1);
2915 if (ret)
2916 goto out;
2917
2918 retval = SUCCESS;
2919out:
2920 sdev_printk(KERN_INFO, scmd->device,
2921 "Host reset is %s for scmd(%p)\n",
2922 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2923
2924 return retval;
2925}
2926
2927/**
2928 * mpi3mr_eh_target_reset - Target reset error handling callback
2929 * @scmd: SCSI command reference
2930 *
2931 * Issue Target reset Task Management and verify the scmd is
2932 * terminated successfully and return status accordingly.
2933 *
2934 * Return: SUCCESS of successful termination of the scmd else
2935 * FAILED
2936 */
2937static int mpi3mr_eh_target_reset(struct scsi_cmnd *scmd)
2938{
2939 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
2940 struct mpi3mr_stgt_priv_data *stgt_priv_data;
2941 struct mpi3mr_sdev_priv_data *sdev_priv_data;
2942 u16 dev_handle;
2943 u8 resp_code = 0;
2944 int retval = FAILED, ret = 0;
2945
2946 sdev_printk(KERN_INFO, scmd->device,
2947 "Attempting Target Reset! scmd(%p)\n", scmd);
2948 scsi_print_command(scmd);
2949
2950 sdev_priv_data = scmd->device->hostdata;
2951 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
2952 sdev_printk(KERN_INFO, scmd->device,
2953 "SCSI device is not available\n");
2954 retval = SUCCESS;
2955 goto out;
2956 }
2957
2958 stgt_priv_data = sdev_priv_data->tgt_priv_data;
2959 dev_handle = stgt_priv_data->dev_handle;
2960 sdev_printk(KERN_INFO, scmd->device,
2961 "Target Reset is issued to handle(0x%04x)\n",
2962 dev_handle);
2963
2964 ret = mpi3mr_issue_tm(mrioc,
2965 MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET, dev_handle,
2966 sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
2967 MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, NULL);
2968
2969 if (ret)
2970 goto out;
2971
2972 retval = SUCCESS;
2973out:
2974 sdev_printk(KERN_INFO, scmd->device,
2975 "Target reset is %s for scmd(%p)\n",
2976 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
2977
2978 return retval;
2979}
2980
2981/**
2982 * mpi3mr_eh_dev_reset- Device reset error handling callback
2983 * @scmd: SCSI command reference
2984 *
2985 * Issue lun reset Task Management and verify the scmd is
2986 * terminated successfully and return status accordingly.
2987 *
2988 * Return: SUCCESS of successful termination of the scmd else
2989 * FAILED
2990 */
2991static int mpi3mr_eh_dev_reset(struct scsi_cmnd *scmd)
2992{
2993 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
2994 struct mpi3mr_stgt_priv_data *stgt_priv_data;
2995 struct mpi3mr_sdev_priv_data *sdev_priv_data;
2996 u16 dev_handle;
2997 u8 resp_code = 0;
2998 int retval = FAILED, ret = 0;
2999
3000 sdev_printk(KERN_INFO, scmd->device,
3001 "Attempting Device(lun) Reset! scmd(%p)\n", scmd);
3002 scsi_print_command(scmd);
3003
3004 sdev_priv_data = scmd->device->hostdata;
3005 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
3006 sdev_printk(KERN_INFO, scmd->device,
3007 "SCSI device is not available\n");
3008 retval = SUCCESS;
3009 goto out;
3010 }
3011
3012 stgt_priv_data = sdev_priv_data->tgt_priv_data;
3013 dev_handle = stgt_priv_data->dev_handle;
3014 sdev_printk(KERN_INFO, scmd->device,
3015 "Device(lun) Reset is issued to handle(0x%04x)\n", dev_handle);
3016
3017 ret = mpi3mr_issue_tm(mrioc,
3018 MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, dev_handle,
3019 sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
3020 MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, NULL);
3021
3022 if (ret)
3023 goto out;
3024
3025 retval = SUCCESS;
3026out:
3027 sdev_printk(KERN_INFO, scmd->device,
3028 "Device(lun) reset is %s for scmd(%p)\n",
3029 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
3030
3031 return retval;
3032}
3033
3034/**
3035 * mpi3mr_scan_start - Scan start callback handler
3036 * @shost: SCSI host reference
3037 *
3038 * Issue port enable request asynchronously.
3039 *
3040 * Return: Nothing
3041 */
3042static void mpi3mr_scan_start(struct Scsi_Host *shost)
3043{
3044 struct mpi3mr_ioc *mrioc = shost_priv(shost);
3045
3046 mrioc->scan_started = 1;
3047 ioc_info(mrioc, "%s :Issuing Port Enable\n", __func__);
3048 if (mpi3mr_issue_port_enable(mrioc, 1)) {
3049 ioc_err(mrioc, "%s :Issuing port enable failed\n", __func__);
3050 mrioc->scan_started = 0;
3051 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
3052 }
3053}
3054
3055/**
3056 * mpi3mr_scan_finished - Scan finished callback handler
3057 * @shost: SCSI host reference
3058 * @time: Jiffies from the scan start
3059 *
3060 * Checks whether the port enable is completed or timedout or
3061 * failed and set the scan status accordingly after taking any
3062 * recovery if required.
3063 *
3064 * Return: 1 on scan finished or timed out, 0 for in progress
3065 */
3066static int mpi3mr_scan_finished(struct Scsi_Host *shost,
3067 unsigned long time)
3068{
3069 struct mpi3mr_ioc *mrioc = shost_priv(shost);
3070 u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT;
3071
3072 if (time >= (pe_timeout * HZ)) {
3073 mrioc->init_cmds.is_waiting = 0;
3074 mrioc->init_cmds.callback = NULL;
3075 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
3076 ioc_err(mrioc, "%s :port enable request timed out\n", __func__);
3077 mrioc->is_driver_loading = 0;
3078 mpi3mr_soft_reset_handler(mrioc,
3079 MPI3MR_RESET_FROM_PE_TIMEOUT, 1);
3080 }
3081
3082 if (mrioc->scan_failed) {
3083 ioc_err(mrioc,
3084 "%s :port enable failed with (ioc_status=0x%08x)\n",
3085 __func__, mrioc->scan_failed);
3086 mrioc->is_driver_loading = 0;
3087 mrioc->stop_drv_processing = 1;
3088 return 1;
3089 }
3090
3091 if (mrioc->scan_started)
3092 return 0;
3093 ioc_info(mrioc, "%s :port enable: SUCCESS\n", __func__);
3094 mpi3mr_start_watchdog(mrioc);
3095 mrioc->is_driver_loading = 0;
3096
3097 return 1;
3098}
3099
3100/**
3101 * mpi3mr_slave_destroy - Slave destroy callback handler
3102 * @sdev: SCSI device reference
3103 *
3104 * Cleanup and free per device(lun) private data.
3105 *
3106 * Return: Nothing.
3107 */
3108static void mpi3mr_slave_destroy(struct scsi_device *sdev)
3109{
3110 struct Scsi_Host *shost;
3111 struct mpi3mr_ioc *mrioc;
3112 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
3113 struct mpi3mr_tgt_dev *tgt_dev;
3114 unsigned long flags;
3115 struct scsi_target *starget;
3116
3117 if (!sdev->hostdata)
3118 return;
3119
3120 starget = scsi_target(sdev);
3121 shost = dev_to_shost(&starget->dev);
3122 mrioc = shost_priv(shost);
3123 scsi_tgt_priv_data = starget->hostdata;
3124
3125 scsi_tgt_priv_data->num_luns--;
3126
3127 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
3128 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
3129 if (tgt_dev && (!scsi_tgt_priv_data->num_luns))
3130 tgt_dev->starget = NULL;
3131 if (tgt_dev)
3132 mpi3mr_tgtdev_put(tgt_dev);
3133 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
3134
3135 kfree(sdev->hostdata);
3136 sdev->hostdata = NULL;
3137}
3138
3139/**
3140 * mpi3mr_target_destroy - Target destroy callback handler
3141 * @starget: SCSI target reference
3142 *
3143 * Cleanup and free per target private data.
3144 *
3145 * Return: Nothing.
3146 */
3147static void mpi3mr_target_destroy(struct scsi_target *starget)
3148{
3149 struct Scsi_Host *shost;
3150 struct mpi3mr_ioc *mrioc;
3151 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
3152 struct mpi3mr_tgt_dev *tgt_dev;
3153 unsigned long flags;
3154
3155 if (!starget->hostdata)
3156 return;
3157
3158 shost = dev_to_shost(&starget->dev);
3159 mrioc = shost_priv(shost);
3160 scsi_tgt_priv_data = starget->hostdata;
3161
3162 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
3163 tgt_dev = __mpi3mr_get_tgtdev_from_tgtpriv(mrioc, scsi_tgt_priv_data);
3164 if (tgt_dev && (tgt_dev->starget == starget) &&
3165 (tgt_dev->perst_id == starget->id))
3166 tgt_dev->starget = NULL;
3167 if (tgt_dev) {
3168 scsi_tgt_priv_data->tgt_dev = NULL;
3169 scsi_tgt_priv_data->perst_id = 0;
3170 mpi3mr_tgtdev_put(tgt_dev);
3171 mpi3mr_tgtdev_put(tgt_dev);
3172 }
3173 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
3174
3175 kfree(starget->hostdata);
3176 starget->hostdata = NULL;
3177}
3178
3179/**
3180 * mpi3mr_slave_configure - Slave configure callback handler
3181 * @sdev: SCSI device reference
3182 *
3183 * Configure queue depth, max hardware sectors and virt boundary
3184 * as required
3185 *
3186 * Return: 0 always.
3187 */
3188static int mpi3mr_slave_configure(struct scsi_device *sdev)
3189{
3190 struct scsi_target *starget;
3191 struct Scsi_Host *shost;
3192 struct mpi3mr_ioc *mrioc;
3193 struct mpi3mr_tgt_dev *tgt_dev;
3194 unsigned long flags;
3195 int retval = 0;
3196
3197 starget = scsi_target(sdev);
3198 shost = dev_to_shost(&starget->dev);
3199 mrioc = shost_priv(shost);
3200
3201 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
3202 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
3203 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
3204 if (!tgt_dev)
3205 return -ENXIO;
3206
3207 mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth);
3208 switch (tgt_dev->dev_type) {
3209 case MPI3_DEVICE_DEVFORM_PCIE:
3210 /*The block layer hw sector size = 512*/
3211 blk_queue_max_hw_sectors(sdev->request_queue,
3212 tgt_dev->dev_spec.pcie_inf.mdts / 512);
3213 blk_queue_virt_boundary(sdev->request_queue,
3214 ((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1));
3215 break;
3216 default:
3217 break;
3218 }
3219
3220 mpi3mr_tgtdev_put(tgt_dev);
3221
3222 return retval;
3223}
3224
3225/**
3226 * mpi3mr_slave_alloc -Slave alloc callback handler
3227 * @sdev: SCSI device reference
3228 *
3229 * Allocate per device(lun) private data and initialize it.
3230 *
3231 * Return: 0 on success -ENOMEM on memory allocation failure.
3232 */
3233static int mpi3mr_slave_alloc(struct scsi_device *sdev)
3234{
3235 struct Scsi_Host *shost;
3236 struct mpi3mr_ioc *mrioc;
3237 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
3238 struct mpi3mr_tgt_dev *tgt_dev;
3239 struct mpi3mr_sdev_priv_data *scsi_dev_priv_data;
3240 unsigned long flags;
3241 struct scsi_target *starget;
3242 int retval = 0;
3243
3244 starget = scsi_target(sdev);
3245 shost = dev_to_shost(&starget->dev);
3246 mrioc = shost_priv(shost);
3247 scsi_tgt_priv_data = starget->hostdata;
3248
3249 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
3250 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
3251
3252 if (tgt_dev) {
3253 if (tgt_dev->starget == NULL)
3254 tgt_dev->starget = starget;
3255 mpi3mr_tgtdev_put(tgt_dev);
3256 retval = 0;
3257 } else {
3258 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
3259 return -ENXIO;
3260 }
3261
3262 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
3263
3264 scsi_dev_priv_data = kzalloc(sizeof(*scsi_dev_priv_data), GFP_KERNEL);
3265 if (!scsi_dev_priv_data)
3266 return -ENOMEM;
3267
3268 scsi_dev_priv_data->lun_id = sdev->lun;
3269 scsi_dev_priv_data->tgt_priv_data = scsi_tgt_priv_data;
3270 sdev->hostdata = scsi_dev_priv_data;
3271
3272 scsi_tgt_priv_data->num_luns++;
3273
3274 return retval;
3275}
3276
3277/**
3278 * mpi3mr_target_alloc - Target alloc callback handler
3279 * @starget: SCSI target reference
3280 *
3281 * Allocate per target private data and initialize it.
3282 *
3283 * Return: 0 on success -ENOMEM on memory allocation failure.
3284 */
3285static int mpi3mr_target_alloc(struct scsi_target *starget)
3286{
3287 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3288 struct mpi3mr_ioc *mrioc = shost_priv(shost);
3289 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
3290 struct mpi3mr_tgt_dev *tgt_dev;
3291 unsigned long flags;
3292 int retval = 0;
3293
3294 scsi_tgt_priv_data = kzalloc(sizeof(*scsi_tgt_priv_data), GFP_KERNEL);
3295 if (!scsi_tgt_priv_data)
3296 return -ENOMEM;
3297
3298 starget->hostdata = scsi_tgt_priv_data;
3299
3300 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
3301 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
3302 if (tgt_dev && !tgt_dev->is_hidden) {
3303 scsi_tgt_priv_data->starget = starget;
3304 scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle;
3305 scsi_tgt_priv_data->perst_id = tgt_dev->perst_id;
3306 scsi_tgt_priv_data->dev_type = tgt_dev->dev_type;
3307 scsi_tgt_priv_data->tgt_dev = tgt_dev;
3308 tgt_dev->starget = starget;
3309 atomic_set(&scsi_tgt_priv_data->block_io, 0);
3310 retval = 0;
3311 } else
3312 retval = -ENXIO;
3313 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
3314
3315 return retval;
3316}
3317
3318/**
3319 * mpi3mr_check_return_unmap - Whether an unmap is allowed
3320 * @mrioc: Adapter instance reference
3321 * @scmd: SCSI Command reference
3322 *
3323 * The controller hardware cannot handle certain unmap commands
3324 * for NVMe drives, this routine checks those and return true
3325 * and completes the SCSI command with proper status and sense
3326 * data.
3327 *
3328 * Return: TRUE for not allowed unmap, FALSE otherwise.
3329 */
3330static bool mpi3mr_check_return_unmap(struct mpi3mr_ioc *mrioc,
3331 struct scsi_cmnd *scmd)
3332{
3333 unsigned char *buf;
3334 u16 param_len, desc_len;
3335
3336 param_len = get_unaligned_be16(scmd->cmnd + 7);
3337
3338 if (!param_len) {
3339 ioc_warn(mrioc,
3340 "%s: cdb received with zero parameter length\n",
3341 __func__);
3342 scsi_print_command(scmd);
3343 scmd->result = DID_OK << 16;
3344 scmd->scsi_done(scmd);
3345 return true;
3346 }
3347
3348 if (param_len < 24) {
3349 ioc_warn(mrioc,
3350 "%s: cdb received with invalid param_len: %d\n",
3351 __func__, param_len);
3352 scsi_print_command(scmd);
3353 scmd->result = SAM_STAT_CHECK_CONDITION;
3354 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
3355 0x1A, 0);
3356 scmd->scsi_done(scmd);
3357 return true;
3358 }
3359 if (param_len != scsi_bufflen(scmd)) {
3360 ioc_warn(mrioc,
3361 "%s: cdb received with param_len: %d bufflen: %d\n",
3362 __func__, param_len, scsi_bufflen(scmd));
3363 scsi_print_command(scmd);
3364 scmd->result = SAM_STAT_CHECK_CONDITION;
3365 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
3366 0x1A, 0);
3367 scmd->scsi_done(scmd);
3368 return true;
3369 }
3370 buf = kzalloc(scsi_bufflen(scmd), GFP_ATOMIC);
3371 if (!buf) {
3372 scsi_print_command(scmd);
3373 scmd->result = SAM_STAT_CHECK_CONDITION;
3374 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
3375 0x55, 0x03);
3376 scmd->scsi_done(scmd);
3377 return true;
3378 }
3379 scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd));
3380 desc_len = get_unaligned_be16(&buf[2]);
3381
3382 if (desc_len < 16) {
3383 ioc_warn(mrioc,
3384 "%s: Invalid descriptor length in param list: %d\n",
3385 __func__, desc_len);
3386 scsi_print_command(scmd);
3387 scmd->result = SAM_STAT_CHECK_CONDITION;
3388 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
3389 0x26, 0);
3390 scmd->scsi_done(scmd);
3391 kfree(buf);
3392 return true;
3393 }
3394
3395 if (param_len > (desc_len + 8)) {
3396 scsi_print_command(scmd);
3397 ioc_warn(mrioc,
3398 "%s: Truncating param_len(%d) to desc_len+8(%d)\n",
3399 __func__, param_len, (desc_len + 8));
3400 param_len = desc_len + 8;
3401 put_unaligned_be16(param_len, scmd->cmnd + 7);
3402 scsi_print_command(scmd);
3403 }
3404
3405 kfree(buf);
3406 return false;
3407}
3408
3409/**
3410 * mpi3mr_allow_scmd_to_fw - Command is allowed during shutdown
3411 * @scmd: SCSI Command reference
3412 *
3413 * Checks whether a cdb is allowed during shutdown or not.
3414 *
3415 * Return: TRUE for allowed commands, FALSE otherwise.
3416 */
3417
3418inline bool mpi3mr_allow_scmd_to_fw(struct scsi_cmnd *scmd)
3419{
3420 switch (scmd->cmnd[0]) {
3421 case SYNCHRONIZE_CACHE:
3422 case START_STOP:
3423 return true;
3424 default:
3425 return false;
3426 }
3427}
3428
3429/**
3430 * mpi3mr_qcmd - I/O request despatcher
3431 * @shost: SCSI Host reference
3432 * @scmd: SCSI Command reference
3433 *
3434 * Issues the SCSI Command as an MPI3 request.
3435 *
3436 * Return: 0 on successful queueing of the request or if the
3437 * request is completed with failure.
3438 * SCSI_MLQUEUE_DEVICE_BUSY when the device is busy.
3439 * SCSI_MLQUEUE_HOST_BUSY when the host queue is full.
3440 */
3441static int mpi3mr_qcmd(struct Scsi_Host *shost,
3442 struct scsi_cmnd *scmd)
3443{
3444 struct mpi3mr_ioc *mrioc = shost_priv(shost);
3445 struct mpi3mr_stgt_priv_data *stgt_priv_data;
3446 struct mpi3mr_sdev_priv_data *sdev_priv_data;
3447 struct scmd_priv *scmd_priv_data = NULL;
3448 struct mpi3_scsi_io_request *scsiio_req = NULL;
3449 struct op_req_qinfo *op_req_q = NULL;
3450 int retval = 0;
3451 u16 dev_handle;
3452 u16 host_tag;
3453 u32 scsiio_flags = 0;
3454 struct request *rq = scmd->request;
3455 int iprio_class;
3456
3457 sdev_priv_data = scmd->device->hostdata;
3458 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
3459 scmd->result = DID_NO_CONNECT << 16;
3460 scmd->scsi_done(scmd);
3461 goto out;
3462 }
3463
3464 if (mrioc->stop_drv_processing &&
3465 !(mpi3mr_allow_scmd_to_fw(scmd))) {
3466 scmd->result = DID_NO_CONNECT << 16;
3467 scmd->scsi_done(scmd);
3468 goto out;
3469 }
3470
3471 if (mrioc->reset_in_progress) {
3472 retval = SCSI_MLQUEUE_HOST_BUSY;
3473 goto out;
3474 }
3475
3476 stgt_priv_data = sdev_priv_data->tgt_priv_data;
3477
3478 dev_handle = stgt_priv_data->dev_handle;
3479 if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) {
3480 scmd->result = DID_NO_CONNECT << 16;
3481 scmd->scsi_done(scmd);
3482 goto out;
3483 }
3484 if (stgt_priv_data->dev_removed) {
3485 scmd->result = DID_NO_CONNECT << 16;
3486 scmd->scsi_done(scmd);
3487 goto out;
3488 }
3489
3490 if (atomic_read(&stgt_priv_data->block_io)) {
3491 if (mrioc->stop_drv_processing) {
3492 scmd->result = DID_NO_CONNECT << 16;
3493 scmd->scsi_done(scmd);
3494 goto out;
3495 }
3496 retval = SCSI_MLQUEUE_DEVICE_BUSY;
3497 goto out;
3498 }
3499
3500 if ((scmd->cmnd[0] == UNMAP) &&
3501 (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE) &&
3502 mpi3mr_check_return_unmap(mrioc, scmd))
3503 goto out;
3504
3505 host_tag = mpi3mr_host_tag_for_scmd(mrioc, scmd);
3506 if (host_tag == MPI3MR_HOSTTAG_INVALID) {
3507 scmd->result = DID_ERROR << 16;
3508 scmd->scsi_done(scmd);
3509 goto out;
3510 }
3511
3512 if (scmd->sc_data_direction == DMA_FROM_DEVICE)
3513 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_READ;
3514 else if (scmd->sc_data_direction == DMA_TO_DEVICE)
3515 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_WRITE;
3516 else
3517 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_NO_DATA_TRANSFER;
3518
3519 scsiio_flags |= MPI3_SCSIIO_FLAGS_TASKATTRIBUTE_SIMPLEQ;
3520
3521 if (sdev_priv_data->ncq_prio_enable) {
3522 iprio_class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
3523 if (iprio_class == IOPRIO_CLASS_RT)
3524 scsiio_flags |= 1 << MPI3_SCSIIO_FLAGS_CMDPRI_SHIFT;
3525 }
3526
3527 if (scmd->cmd_len > 16)
3528 scsiio_flags |= MPI3_SCSIIO_FLAGS_CDB_GREATER_THAN_16;
3529
3530 scmd_priv_data = scsi_cmd_priv(scmd);
3531 memset(scmd_priv_data->mpi3mr_scsiio_req, 0, MPI3MR_ADMIN_REQ_FRAME_SZ);
3532 scsiio_req = (struct mpi3_scsi_io_request *)scmd_priv_data->mpi3mr_scsiio_req;
3533 scsiio_req->function = MPI3_FUNCTION_SCSI_IO;
3534 scsiio_req->host_tag = cpu_to_le16(host_tag);
3535
3536 mpi3mr_setup_eedp(mrioc, scmd, scsiio_req);
3537
3538 memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len);
3539 scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd));
3540 scsiio_req->dev_handle = cpu_to_le16(dev_handle);
3541 scsiio_req->flags = cpu_to_le32(scsiio_flags);
3542 int_to_scsilun(sdev_priv_data->lun_id,
3543 (struct scsi_lun *)scsiio_req->lun);
3544
3545 if (mpi3mr_build_sg_scmd(mrioc, scmd, scsiio_req)) {
3546 mpi3mr_clear_scmd_priv(mrioc, scmd);
3547 retval = SCSI_MLQUEUE_HOST_BUSY;
3548 goto out;
3549 }
3550 op_req_q = &mrioc->req_qinfo[scmd_priv_data->req_q_idx];
3551
3552 if (mpi3mr_op_request_post(mrioc, op_req_q,
3553 scmd_priv_data->mpi3mr_scsiio_req)) {
3554 mpi3mr_clear_scmd_priv(mrioc, scmd);
3555 retval = SCSI_MLQUEUE_HOST_BUSY;
3556 goto out;
3557 }
3558
3559out:
3560 return retval;
3561}
3562
3563static struct scsi_host_template mpi3mr_driver_template = {
3564 .module = THIS_MODULE,
3565 .name = "MPI3 Storage Controller",
3566 .proc_name = MPI3MR_DRIVER_NAME,
3567 .queuecommand = mpi3mr_qcmd,
3568 .target_alloc = mpi3mr_target_alloc,
3569 .slave_alloc = mpi3mr_slave_alloc,
3570 .slave_configure = mpi3mr_slave_configure,
3571 .target_destroy = mpi3mr_target_destroy,
3572 .slave_destroy = mpi3mr_slave_destroy,
3573 .scan_finished = mpi3mr_scan_finished,
3574 .scan_start = mpi3mr_scan_start,
3575 .change_queue_depth = mpi3mr_change_queue_depth,
3576 .eh_device_reset_handler = mpi3mr_eh_dev_reset,
3577 .eh_target_reset_handler = mpi3mr_eh_target_reset,
3578 .eh_host_reset_handler = mpi3mr_eh_host_reset,
3579 .bios_param = mpi3mr_bios_param,
3580 .map_queues = mpi3mr_map_queues,
3581 .no_write_same = 1,
3582 .can_queue = 1,
3583 .this_id = -1,
3584 .sg_tablesize = MPI3MR_SG_DEPTH,
3585 /* max xfer supported is 1M (2K in 512 byte sized sectors)
3586 */
3587 .max_sectors = 2048,
3588 .cmd_per_lun = MPI3MR_MAX_CMDS_LUN,
3589 .track_queue_depth = 1,
3590 .cmd_size = sizeof(struct scmd_priv),
3591};
3592
3593/**
3594 * mpi3mr_init_drv_cmd - Initialize internal command tracker
3595 * @cmdptr: Internal command tracker
3596 * @host_tag: Host tag used for the specific command
3597 *
3598 * Initialize the internal command tracker structure with
3599 * specified host tag.
3600 *
3601 * Return: Nothing.
3602 */
3603static inline void mpi3mr_init_drv_cmd(struct mpi3mr_drv_cmd *cmdptr,
3604 u16 host_tag)
3605{
3606 mutex_init(&cmdptr->mutex);
3607 cmdptr->reply = NULL;
3608 cmdptr->state = MPI3MR_CMD_NOTUSED;
3609 cmdptr->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
3610 cmdptr->host_tag = host_tag;
3611}
3612
3613/**
3614 * osintfc_mrioc_security_status -Check controller secure status
3615 * @pdev: PCI device instance
3616 *
3617 * Read the Device Serial Number capability from PCI config
3618 * space and decide whether the controller is secure or not.
3619 *
3620 * Return: 0 on success, non-zero on failure.
3621 */
3622static int
3623osintfc_mrioc_security_status(struct pci_dev *pdev)
3624{
3625 u32 cap_data;
3626 int base;
3627 u32 ctlr_status;
3628 u32 debug_status;
3629 int retval = 0;
3630
3631 base = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DSN);
3632 if (!base) {
3633 dev_err(&pdev->dev,
3634 "%s: PCI_EXT_CAP_ID_DSN is not supported\n", __func__);
3635 return -1;
3636 }
3637
3638 pci_read_config_dword(pdev, base + 4, &cap_data);
3639
3640 debug_status = cap_data & MPI3MR_CTLR_SECURE_DBG_STATUS_MASK;
3641 ctlr_status = cap_data & MPI3MR_CTLR_SECURITY_STATUS_MASK;
3642
3643 switch (ctlr_status) {
3644 case MPI3MR_INVALID_DEVICE:
3645 dev_err(&pdev->dev,
3646 "%s: Non secure ctlr (Invalid) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
3647 __func__, pdev->device, pdev->subsystem_vendor,
3648 pdev->subsystem_device);
3649 retval = -1;
3650 break;
3651 case MPI3MR_CONFIG_SECURE_DEVICE:
3652 if (!debug_status)
3653 dev_info(&pdev->dev,
3654 "%s: Config secure ctlr is detected\n",
3655 __func__);
3656 break;
3657 case MPI3MR_HARD_SECURE_DEVICE:
3658 break;
3659 case MPI3MR_TAMPERED_DEVICE:
3660 dev_err(&pdev->dev,
3661 "%s: Non secure ctlr (Tampered) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
3662 __func__, pdev->device, pdev->subsystem_vendor,
3663 pdev->subsystem_device);
3664 retval = -1;
3665 break;
3666 default:
3667 retval = -1;
3668 break;
3669 }
3670
3671 if (!retval && debug_status) {
3672 dev_err(&pdev->dev,
3673 "%s: Non secure ctlr (Secure Dbg) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
3674 __func__, pdev->device, pdev->subsystem_vendor,
3675 pdev->subsystem_device);
3676 retval = -1;
3677 }
3678
3679 return retval;
3680}
3681
3682/**
3683 * mpi3mr_probe - PCI probe callback
3684 * @pdev: PCI device instance
3685 * @id: PCI device ID details
3686 *
3687 * controller initialization routine. Checks the security status
3688 * of the controller and if it is invalid or tampered return the
3689 * probe without initializing the controller. Otherwise,
3690 * allocate per adapter instance through shost_priv and
3691 * initialize controller specific data structures, initializae
3692 * the controller hardware, add shost to the SCSI subsystem.
3693 *
3694 * Return: 0 on success, non-zero on failure.
3695 */
3696
3697static int
3698mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3699{
3700 struct mpi3mr_ioc *mrioc = NULL;
3701 struct Scsi_Host *shost = NULL;
3702 int retval = 0, i;
3703
3704 if (osintfc_mrioc_security_status(pdev)) {
3705 warn_non_secure_ctlr = 1;
3706 return 1; /* For Invalid and Tampered device */
3707 }
3708
3709 shost = scsi_host_alloc(&mpi3mr_driver_template,
3710 sizeof(struct mpi3mr_ioc));
3711 if (!shost) {
3712 retval = -ENODEV;
3713 goto shost_failed;
3714 }
3715
3716 mrioc = shost_priv(shost);
3717 mrioc->id = mrioc_ids++;
3718 sprintf(mrioc->driver_name, "%s", MPI3MR_DRIVER_NAME);
3719 sprintf(mrioc->name, "%s%d", mrioc->driver_name, mrioc->id);
3720 INIT_LIST_HEAD(&mrioc->list);
3721 spin_lock(&mrioc_list_lock);
3722 list_add_tail(&mrioc->list, &mrioc_list);
3723 spin_unlock(&mrioc_list_lock);
3724
3725 spin_lock_init(&mrioc->admin_req_lock);
3726 spin_lock_init(&mrioc->reply_free_queue_lock);
3727 spin_lock_init(&mrioc->sbq_lock);
3728 spin_lock_init(&mrioc->fwevt_lock);
3729 spin_lock_init(&mrioc->tgtdev_lock);
3730 spin_lock_init(&mrioc->watchdog_lock);
3731 spin_lock_init(&mrioc->chain_buf_lock);
3732
3733 INIT_LIST_HEAD(&mrioc->fwevt_list);
3734 INIT_LIST_HEAD(&mrioc->tgtdev_list);
3735 INIT_LIST_HEAD(&mrioc->delayed_rmhs_list);
3736
3737 mutex_init(&mrioc->reset_mutex);
3738 mpi3mr_init_drv_cmd(&mrioc->init_cmds, MPI3MR_HOSTTAG_INITCMDS);
3739 mpi3mr_init_drv_cmd(&mrioc->host_tm_cmds, MPI3MR_HOSTTAG_BLK_TMS);
3740
3741 for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++)
3742 mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i],
3743 MPI3MR_HOSTTAG_DEVRMCMD_MIN + i);
3744
3745 if (pdev->revision)
3746 mrioc->enable_segqueue = true;
3747
3748 init_waitqueue_head(&mrioc->reset_waitq);
3749 mrioc->logging_level = logging_level;
3750 mrioc->shost = shost;
3751 mrioc->pdev = pdev;
3752
3753 /* init shost parameters */
3754 shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH;
3755 shost->max_lun = -1;
3756 shost->unique_id = mrioc->id;
3757
3758 shost->max_channel = 0;
3759 shost->max_id = 0xFFFFFFFF;
3760
3761 if (prot_mask >= 0)
3762 scsi_host_set_prot(shost, prot_mask);
3763 else {
3764 prot_mask = SHOST_DIF_TYPE1_PROTECTION
3765 | SHOST_DIF_TYPE2_PROTECTION
3766 | SHOST_DIF_TYPE3_PROTECTION;
3767 scsi_host_set_prot(shost, prot_mask);
3768 }
3769
3770 ioc_info(mrioc,
3771 "%s :host protection capabilities enabled %s%s%s%s%s%s%s\n",
3772 __func__,
3773 (prot_mask & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "",
3774 (prot_mask & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "",
3775 (prot_mask & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "",
3776 (prot_mask & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "",
3777 (prot_mask & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "",
3778 (prot_mask & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "",
3779 (prot_mask & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : "");
3780
3781 if (prot_guard_mask)
3782 scsi_host_set_guard(shost, (prot_guard_mask & 3));
3783 else
3784 scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
3785
3786 snprintf(mrioc->fwevt_worker_name, sizeof(mrioc->fwevt_worker_name),
3787 "%s%d_fwevt_wrkr", mrioc->driver_name, mrioc->id);
3788 mrioc->fwevt_worker_thread = alloc_ordered_workqueue(
3789 mrioc->fwevt_worker_name, WQ_MEM_RECLAIM);
3790 if (!mrioc->fwevt_worker_thread) {
3791 ioc_err(mrioc, "failure at %s:%d/%s()!\n",
3792 __FILE__, __LINE__, __func__);
3793 retval = -ENODEV;
3794 goto out_fwevtthread_failed;
3795 }
3796
3797 mrioc->is_driver_loading = 1;
3798 if (mpi3mr_init_ioc(mrioc, 0)) {
3799 ioc_err(mrioc, "failure at %s:%d/%s()!\n",
3800 __FILE__, __LINE__, __func__);
3801 retval = -ENODEV;
3802 goto out_iocinit_failed;
3803 }
3804
3805 shost->nr_hw_queues = mrioc->num_op_reply_q;
3806 shost->can_queue = mrioc->max_host_ios;
3807 shost->sg_tablesize = MPI3MR_SG_DEPTH;
3808 shost->max_id = mrioc->facts.max_perids;
3809
3810 retval = scsi_add_host(shost, &pdev->dev);
3811 if (retval) {
3812 ioc_err(mrioc, "failure at %s:%d/%s()!\n",
3813 __FILE__, __LINE__, __func__);
3814 goto addhost_failed;
3815 }
3816
3817 scsi_scan_host(shost);
3818 return retval;
3819
3820addhost_failed:
3821 mpi3mr_cleanup_ioc(mrioc, 0);
3822out_iocinit_failed:
3823 destroy_workqueue(mrioc->fwevt_worker_thread);
3824out_fwevtthread_failed:
3825 spin_lock(&mrioc_list_lock);
3826 list_del(&mrioc->list);
3827 spin_unlock(&mrioc_list_lock);
3828 scsi_host_put(shost);
3829shost_failed:
3830 return retval;
3831}
3832
3833/**
3834 * mpi3mr_remove - PCI remove callback
3835 * @pdev: PCI device instance
3836 *
3837 * Free up all memory and resources associated with the
3838 * controllerand target devices, unregister the shost.
3839 *
3840 * Return: Nothing.
3841 */
3842static void mpi3mr_remove(struct pci_dev *pdev)
3843{
3844 struct Scsi_Host *shost = pci_get_drvdata(pdev);
3845 struct mpi3mr_ioc *mrioc;
3846 struct workqueue_struct *wq;
3847 unsigned long flags;
3848 struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
3849
3850 if (!shost)
3851 return;
3852
3853 mrioc = shost_priv(shost);
3854 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
3855 ssleep(1);
3856
3857 mrioc->stop_drv_processing = 1;
3858 mpi3mr_cleanup_fwevt_list(mrioc);
3859 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
3860 wq = mrioc->fwevt_worker_thread;
3861 mrioc->fwevt_worker_thread = NULL;
3862 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
3863 if (wq)
3864 destroy_workqueue(wq);
3865 scsi_remove_host(shost);
3866
3867 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
3868 list) {
3869 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
3870 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
3871 mpi3mr_tgtdev_put(tgtdev);
3872 }
3873 mpi3mr_cleanup_ioc(mrioc, 0);
3874
3875 spin_lock(&mrioc_list_lock);
3876 list_del(&mrioc->list);
3877 spin_unlock(&mrioc_list_lock);
3878
3879 scsi_host_put(shost);
3880}
3881
3882/**
3883 * mpi3mr_shutdown - PCI shutdown callback
3884 * @pdev: PCI device instance
3885 *
3886 * Free up all memory and resources associated with the
3887 * controller
3888 *
3889 * Return: Nothing.
3890 */
3891static void mpi3mr_shutdown(struct pci_dev *pdev)
3892{
3893 struct Scsi_Host *shost = pci_get_drvdata(pdev);
3894 struct mpi3mr_ioc *mrioc;
3895 struct workqueue_struct *wq;
3896 unsigned long flags;
3897
3898 if (!shost)
3899 return;
3900
3901 mrioc = shost_priv(shost);
3902 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
3903 ssleep(1);
3904
3905 mrioc->stop_drv_processing = 1;
3906 mpi3mr_cleanup_fwevt_list(mrioc);
3907 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
3908 wq = mrioc->fwevt_worker_thread;
3909 mrioc->fwevt_worker_thread = NULL;
3910 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
3911 if (wq)
3912 destroy_workqueue(wq);
3913 mpi3mr_cleanup_ioc(mrioc, 0);
3914}
3915
3916#ifdef CONFIG_PM
3917/**
3918 * mpi3mr_suspend - PCI power management suspend callback
3919 * @pdev: PCI device instance
3920 * @state: New power state
3921 *
3922 * Change the power state to the given value and cleanup the IOC
3923 * by issuing MUR and shutdown notification
3924 *
3925 * Return: 0 always.
3926 */
3927static int mpi3mr_suspend(struct pci_dev *pdev, pm_message_t state)
3928{
3929 struct Scsi_Host *shost = pci_get_drvdata(pdev);
3930 struct mpi3mr_ioc *mrioc;
3931 pci_power_t device_state;
3932
3933 if (!shost)
3934 return 0;
3935
3936 mrioc = shost_priv(shost);
3937 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
3938 ssleep(1);
3939 mrioc->stop_drv_processing = 1;
3940 mpi3mr_cleanup_fwevt_list(mrioc);
3941 scsi_block_requests(shost);
3942 mpi3mr_stop_watchdog(mrioc);
3943 mpi3mr_cleanup_ioc(mrioc, 1);
3944
3945 device_state = pci_choose_state(pdev, state);
3946 ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state [D%d]\n",
3947 pdev, pci_name(pdev), device_state);
3948 pci_save_state(pdev);
3949 pci_set_power_state(pdev, device_state);
3950 mpi3mr_cleanup_resources(mrioc);
3951
3952 return 0;
3953}
3954
3955/**
3956 * mpi3mr_resume - PCI power management resume callback
3957 * @pdev: PCI device instance
3958 *
3959 * Restore the power state to D0 and reinitialize the controller
3960 * and resume I/O operations to the target devices
3961 *
3962 * Return: 0 on success, non-zero on failure
3963 */
3964static int mpi3mr_resume(struct pci_dev *pdev)
3965{
3966 struct Scsi_Host *shost = pci_get_drvdata(pdev);
3967 struct mpi3mr_ioc *mrioc;
3968 pci_power_t device_state = pdev->current_state;
3969 int r;
3970
3971 if (!shost)
3972 return 0;
3973
3974 mrioc = shost_priv(shost);
3975
3976 ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
3977 pdev, pci_name(pdev), device_state);
3978 pci_set_power_state(pdev, PCI_D0);
3979 pci_enable_wake(pdev, PCI_D0, 0);
3980 pci_restore_state(pdev);
3981 mrioc->pdev = pdev;
3982 mrioc->cpu_count = num_online_cpus();
3983 r = mpi3mr_setup_resources(mrioc);
3984 if (r) {
3985 ioc_info(mrioc, "%s: Setup resources failed[%d]\n",
3986 __func__, r);
3987 return r;
3988 }
3989
3990 mrioc->stop_drv_processing = 0;
3991 mpi3mr_init_ioc(mrioc, 1);
3992 scsi_unblock_requests(shost);
3993 mpi3mr_start_watchdog(mrioc);
3994
3995 return 0;
3996}
3997#endif
3998
3999static const struct pci_device_id mpi3mr_pci_id_table[] = {
4000 {
4001 PCI_DEVICE_SUB(PCI_VENDOR_ID_LSI_LOGIC, 0x00A5,
4002 PCI_ANY_ID, PCI_ANY_ID)
4003 },
4004 { 0 }
4005};
4006MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table);
4007
4008static struct pci_driver mpi3mr_pci_driver = {
4009 .name = MPI3MR_DRIVER_NAME,
4010 .id_table = mpi3mr_pci_id_table,
4011 .probe = mpi3mr_probe,
4012 .remove = mpi3mr_remove,
4013 .shutdown = mpi3mr_shutdown,
4014#ifdef CONFIG_PM
4015 .suspend = mpi3mr_suspend,
4016 .resume = mpi3mr_resume,
4017#endif
4018};
4019
4020static int __init mpi3mr_init(void)
4021{
4022 int ret_val;
4023
4024 pr_info("Loading %s version %s\n", MPI3MR_DRIVER_NAME,
4025 MPI3MR_DRIVER_VERSION);
4026
4027 ret_val = pci_register_driver(&mpi3mr_pci_driver);
4028
4029 return ret_val;
4030}
4031
4032static void __exit mpi3mr_exit(void)
4033{
4034 if (warn_non_secure_ctlr)
4035 pr_warn(
4036 "Unloading %s version %s while managing a non secure controller\n",
4037 MPI3MR_DRIVER_NAME, MPI3MR_DRIVER_VERSION);
4038 else
4039 pr_info("Unloading %s version %s\n", MPI3MR_DRIVER_NAME,
4040 MPI3MR_DRIVER_VERSION);
4041
4042 pci_unregister_driver(&mpi3mr_pci_driver);
4043}
4044
4045module_init(mpi3mr_init);
4046module_exit(mpi3mr_exit);