Loading...
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);
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Driver for Broadcom MPI3 Storage Controllers
4 *
5 * Copyright (C) 2017-2022 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;
17atomic64_t event_counter;
18
19MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR);
20MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC);
21MODULE_LICENSE(MPI3MR_DRIVER_LICENSE);
22MODULE_VERSION(MPI3MR_DRIVER_VERSION);
23
24/* Module parameters*/
25int prot_mask = -1;
26module_param(prot_mask, int, 0);
27MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07");
28
29static int prot_guard_mask = 3;
30module_param(prot_guard_mask, int, 0);
31MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3");
32static int logging_level;
33module_param(logging_level, int, 0);
34MODULE_PARM_DESC(logging_level,
35 " bits for enabling additional logging info (default=0)");
36
37/* Forward declarations*/
38static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event,
39 struct mpi3mr_drv_cmd *cmdparam, u32 event_ctx);
40
41#define MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION (0xFFFF)
42
43#define MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH (0xFFFE)
44
45/**
46 * mpi3mr_host_tag_for_scmd - Get host tag for a scmd
47 * @mrioc: Adapter instance reference
48 * @scmd: SCSI command reference
49 *
50 * Calculate the host tag based on block tag for a given scmd.
51 *
52 * Return: Valid host tag or MPI3MR_HOSTTAG_INVALID.
53 */
54static u16 mpi3mr_host_tag_for_scmd(struct mpi3mr_ioc *mrioc,
55 struct scsi_cmnd *scmd)
56{
57 struct scmd_priv *priv = NULL;
58 u32 unique_tag;
59 u16 host_tag, hw_queue;
60
61 unique_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
62
63 hw_queue = blk_mq_unique_tag_to_hwq(unique_tag);
64 if (hw_queue >= mrioc->num_op_reply_q)
65 return MPI3MR_HOSTTAG_INVALID;
66 host_tag = blk_mq_unique_tag_to_tag(unique_tag);
67
68 if (WARN_ON(host_tag >= mrioc->max_host_ios))
69 return MPI3MR_HOSTTAG_INVALID;
70
71 priv = scsi_cmd_priv(scmd);
72 /*host_tag 0 is invalid hence incrementing by 1*/
73 priv->host_tag = host_tag + 1;
74 priv->scmd = scmd;
75 priv->in_lld_scope = 1;
76 priv->req_q_idx = hw_queue;
77 priv->meta_chain_idx = -1;
78 priv->chain_idx = -1;
79 priv->meta_sg_valid = 0;
80 return priv->host_tag;
81}
82
83/**
84 * mpi3mr_scmd_from_host_tag - Get SCSI command from host tag
85 * @mrioc: Adapter instance reference
86 * @host_tag: Host tag
87 * @qidx: Operational queue index
88 *
89 * Identify the block tag from the host tag and queue index and
90 * retrieve associated scsi command using scsi_host_find_tag().
91 *
92 * Return: SCSI command reference or NULL.
93 */
94static struct scsi_cmnd *mpi3mr_scmd_from_host_tag(
95 struct mpi3mr_ioc *mrioc, u16 host_tag, u16 qidx)
96{
97 struct scsi_cmnd *scmd = NULL;
98 struct scmd_priv *priv = NULL;
99 u32 unique_tag = host_tag - 1;
100
101 if (WARN_ON(host_tag > mrioc->max_host_ios))
102 goto out;
103
104 unique_tag |= (qidx << BLK_MQ_UNIQUE_TAG_BITS);
105
106 scmd = scsi_host_find_tag(mrioc->shost, unique_tag);
107 if (scmd) {
108 priv = scsi_cmd_priv(scmd);
109 if (!priv->in_lld_scope)
110 scmd = NULL;
111 }
112out:
113 return scmd;
114}
115
116/**
117 * mpi3mr_clear_scmd_priv - Cleanup SCSI command private date
118 * @mrioc: Adapter instance reference
119 * @scmd: SCSI command reference
120 *
121 * Invalidate the SCSI command private data to mark the command
122 * is not in LLD scope anymore.
123 *
124 * Return: Nothing.
125 */
126static void mpi3mr_clear_scmd_priv(struct mpi3mr_ioc *mrioc,
127 struct scsi_cmnd *scmd)
128{
129 struct scmd_priv *priv = NULL;
130
131 priv = scsi_cmd_priv(scmd);
132
133 if (WARN_ON(priv->in_lld_scope == 0))
134 return;
135 priv->host_tag = MPI3MR_HOSTTAG_INVALID;
136 priv->req_q_idx = 0xFFFF;
137 priv->scmd = NULL;
138 priv->in_lld_scope = 0;
139 priv->meta_sg_valid = 0;
140 if (priv->chain_idx >= 0) {
141 clear_bit(priv->chain_idx, mrioc->chain_bitmap);
142 priv->chain_idx = -1;
143 }
144 if (priv->meta_chain_idx >= 0) {
145 clear_bit(priv->meta_chain_idx, mrioc->chain_bitmap);
146 priv->meta_chain_idx = -1;
147 }
148}
149
150static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
151 struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc);
152static void mpi3mr_fwevt_worker(struct work_struct *work);
153
154/**
155 * mpi3mr_fwevt_free - firmware event memory dealloctor
156 * @r: k reference pointer of the firmware event
157 *
158 * Free firmware event memory when no reference.
159 */
160static void mpi3mr_fwevt_free(struct kref *r)
161{
162 kfree(container_of(r, struct mpi3mr_fwevt, ref_count));
163}
164
165/**
166 * mpi3mr_fwevt_get - k reference incrementor
167 * @fwevt: Firmware event reference
168 *
169 * Increment firmware event reference count.
170 */
171static void mpi3mr_fwevt_get(struct mpi3mr_fwevt *fwevt)
172{
173 kref_get(&fwevt->ref_count);
174}
175
176/**
177 * mpi3mr_fwevt_put - k reference decrementor
178 * @fwevt: Firmware event reference
179 *
180 * decrement firmware event reference count.
181 */
182static void mpi3mr_fwevt_put(struct mpi3mr_fwevt *fwevt)
183{
184 kref_put(&fwevt->ref_count, mpi3mr_fwevt_free);
185}
186
187/**
188 * mpi3mr_alloc_fwevt - Allocate firmware event
189 * @len: length of firmware event data to allocate
190 *
191 * Allocate firmware event with required length and initialize
192 * the reference counter.
193 *
194 * Return: firmware event reference.
195 */
196static struct mpi3mr_fwevt *mpi3mr_alloc_fwevt(int len)
197{
198 struct mpi3mr_fwevt *fwevt;
199
200 fwevt = kzalloc(sizeof(*fwevt) + len, GFP_ATOMIC);
201 if (!fwevt)
202 return NULL;
203
204 kref_init(&fwevt->ref_count);
205 return fwevt;
206}
207
208/**
209 * mpi3mr_fwevt_add_to_list - Add firmware event to the list
210 * @mrioc: Adapter instance reference
211 * @fwevt: Firmware event reference
212 *
213 * Add the given firmware event to the firmware event list.
214 *
215 * Return: Nothing.
216 */
217static void mpi3mr_fwevt_add_to_list(struct mpi3mr_ioc *mrioc,
218 struct mpi3mr_fwevt *fwevt)
219{
220 unsigned long flags;
221
222 if (!mrioc->fwevt_worker_thread)
223 return;
224
225 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
226 /* get fwevt reference count while adding it to fwevt_list */
227 mpi3mr_fwevt_get(fwevt);
228 INIT_LIST_HEAD(&fwevt->list);
229 list_add_tail(&fwevt->list, &mrioc->fwevt_list);
230 INIT_WORK(&fwevt->work, mpi3mr_fwevt_worker);
231 /* get fwevt reference count while enqueueing it to worker queue */
232 mpi3mr_fwevt_get(fwevt);
233 queue_work(mrioc->fwevt_worker_thread, &fwevt->work);
234 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
235}
236
237/**
238 * mpi3mr_fwevt_del_from_list - Delete firmware event from list
239 * @mrioc: Adapter instance reference
240 * @fwevt: Firmware event reference
241 *
242 * Delete the given firmware event from the firmware event list.
243 *
244 * Return: Nothing.
245 */
246static void mpi3mr_fwevt_del_from_list(struct mpi3mr_ioc *mrioc,
247 struct mpi3mr_fwevt *fwevt)
248{
249 unsigned long flags;
250
251 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
252 if (!list_empty(&fwevt->list)) {
253 list_del_init(&fwevt->list);
254 /*
255 * Put fwevt reference count after
256 * removing it from fwevt_list
257 */
258 mpi3mr_fwevt_put(fwevt);
259 }
260 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
261}
262
263/**
264 * mpi3mr_dequeue_fwevt - Dequeue firmware event from the list
265 * @mrioc: Adapter instance reference
266 *
267 * Dequeue a firmware event from the firmware event list.
268 *
269 * Return: firmware event.
270 */
271static struct mpi3mr_fwevt *mpi3mr_dequeue_fwevt(
272 struct mpi3mr_ioc *mrioc)
273{
274 unsigned long flags;
275 struct mpi3mr_fwevt *fwevt = NULL;
276
277 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
278 if (!list_empty(&mrioc->fwevt_list)) {
279 fwevt = list_first_entry(&mrioc->fwevt_list,
280 struct mpi3mr_fwevt, list);
281 list_del_init(&fwevt->list);
282 /*
283 * Put fwevt reference count after
284 * removing it from fwevt_list
285 */
286 mpi3mr_fwevt_put(fwevt);
287 }
288 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
289
290 return fwevt;
291}
292
293/**
294 * mpi3mr_cancel_work - cancel firmware event
295 * @fwevt: fwevt object which needs to be canceled
296 *
297 * Return: Nothing.
298 */
299static void mpi3mr_cancel_work(struct mpi3mr_fwevt *fwevt)
300{
301 /*
302 * Wait on the fwevt to complete. If this returns 1, then
303 * the event was never executed.
304 *
305 * If it did execute, we wait for it to finish, and the put will
306 * happen from mpi3mr_process_fwevt()
307 */
308 if (cancel_work_sync(&fwevt->work)) {
309 /*
310 * Put fwevt reference count after
311 * dequeuing it from worker queue
312 */
313 mpi3mr_fwevt_put(fwevt);
314 /*
315 * Put fwevt reference count to neutralize
316 * kref_init increment
317 */
318 mpi3mr_fwevt_put(fwevt);
319 }
320}
321
322/**
323 * mpi3mr_cleanup_fwevt_list - Cleanup firmware event list
324 * @mrioc: Adapter instance reference
325 *
326 * Flush all pending firmware events from the firmware event
327 * list.
328 *
329 * Return: Nothing.
330 */
331void mpi3mr_cleanup_fwevt_list(struct mpi3mr_ioc *mrioc)
332{
333 struct mpi3mr_fwevt *fwevt = NULL;
334
335 if ((list_empty(&mrioc->fwevt_list) && !mrioc->current_event) ||
336 !mrioc->fwevt_worker_thread)
337 return;
338
339 while ((fwevt = mpi3mr_dequeue_fwevt(mrioc)))
340 mpi3mr_cancel_work(fwevt);
341
342 if (mrioc->current_event) {
343 fwevt = mrioc->current_event;
344 /*
345 * Don't call cancel_work_sync() API for the
346 * fwevt work if the controller reset is
347 * get called as part of processing the
348 * same fwevt work (or) when worker thread is
349 * waiting for device add/remove APIs to complete.
350 * Otherwise we will see deadlock.
351 */
352 if (current_work() == &fwevt->work || fwevt->pending_at_sml) {
353 fwevt->discard = 1;
354 return;
355 }
356
357 mpi3mr_cancel_work(fwevt);
358 }
359}
360
361/**
362 * mpi3mr_queue_qd_reduction_event - Queue TG QD reduction event
363 * @mrioc: Adapter instance reference
364 * @tg: Throttle group information pointer
365 *
366 * Accessor to queue on synthetically generated driver event to
367 * the event worker thread, the driver event will be used to
368 * reduce the QD of all VDs in the TG from the worker thread.
369 *
370 * Return: None.
371 */
372static void mpi3mr_queue_qd_reduction_event(struct mpi3mr_ioc *mrioc,
373 struct mpi3mr_throttle_group_info *tg)
374{
375 struct mpi3mr_fwevt *fwevt;
376 u16 sz = sizeof(struct mpi3mr_throttle_group_info *);
377
378 /*
379 * If the QD reduction event is already queued due to throttle and if
380 * the QD is not restored through device info change event
381 * then dont queue further reduction events
382 */
383 if (tg->fw_qd != tg->modified_qd)
384 return;
385
386 fwevt = mpi3mr_alloc_fwevt(sz);
387 if (!fwevt) {
388 ioc_warn(mrioc, "failed to queue TG QD reduction event\n");
389 return;
390 }
391 *(struct mpi3mr_throttle_group_info **)fwevt->event_data = tg;
392 fwevt->mrioc = mrioc;
393 fwevt->event_id = MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION;
394 fwevt->send_ack = 0;
395 fwevt->process_evt = 1;
396 fwevt->evt_ctx = 0;
397 fwevt->event_data_size = sz;
398 tg->modified_qd = max_t(u16, (tg->fw_qd * tg->qd_reduction) / 10, 8);
399
400 dprint_event_bh(mrioc, "qd reduction event queued for tg_id(%d)\n",
401 tg->id);
402 mpi3mr_fwevt_add_to_list(mrioc, fwevt);
403}
404
405/**
406 * mpi3mr_invalidate_devhandles -Invalidate device handles
407 * @mrioc: Adapter instance reference
408 *
409 * Invalidate the device handles in the target device structures
410 * . Called post reset prior to reinitializing the controller.
411 *
412 * Return: Nothing.
413 */
414void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc)
415{
416 struct mpi3mr_tgt_dev *tgtdev;
417 struct mpi3mr_stgt_priv_data *tgt_priv;
418
419 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
420 tgtdev->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
421 if (tgtdev->starget && tgtdev->starget->hostdata) {
422 tgt_priv = tgtdev->starget->hostdata;
423 tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
424 tgt_priv->io_throttle_enabled = 0;
425 tgt_priv->io_divert = 0;
426 tgt_priv->throttle_group = NULL;
427 if (tgtdev->host_exposed)
428 atomic_set(&tgt_priv->block_io, 1);
429 }
430 }
431}
432
433/**
434 * mpi3mr_print_scmd - print individual SCSI command
435 * @rq: Block request
436 * @data: Adapter instance reference
437 *
438 * Print the SCSI command details if it is in LLD scope.
439 *
440 * Return: true always.
441 */
442static bool mpi3mr_print_scmd(struct request *rq, void *data)
443{
444 struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data;
445 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
446 struct scmd_priv *priv = NULL;
447
448 if (scmd) {
449 priv = scsi_cmd_priv(scmd);
450 if (!priv->in_lld_scope)
451 goto out;
452
453 ioc_info(mrioc, "%s :Host Tag = %d, qid = %d\n",
454 __func__, priv->host_tag, priv->req_q_idx + 1);
455 scsi_print_command(scmd);
456 }
457
458out:
459 return(true);
460}
461
462/**
463 * mpi3mr_flush_scmd - Flush individual SCSI command
464 * @rq: Block request
465 * @data: Adapter instance reference
466 *
467 * Return the SCSI command to the upper layers if it is in LLD
468 * scope.
469 *
470 * Return: true always.
471 */
472
473static bool mpi3mr_flush_scmd(struct request *rq, void *data)
474{
475 struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data;
476 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
477 struct scmd_priv *priv = NULL;
478
479 if (scmd) {
480 priv = scsi_cmd_priv(scmd);
481 if (!priv->in_lld_scope)
482 goto out;
483
484 if (priv->meta_sg_valid)
485 dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd),
486 scsi_prot_sg_count(scmd), scmd->sc_data_direction);
487 mpi3mr_clear_scmd_priv(mrioc, scmd);
488 scsi_dma_unmap(scmd);
489 scmd->result = DID_RESET << 16;
490 scsi_print_command(scmd);
491 scsi_done(scmd);
492 mrioc->flush_io_count++;
493 }
494
495out:
496 return(true);
497}
498
499/**
500 * mpi3mr_count_dev_pending - Count commands pending for a lun
501 * @rq: Block request
502 * @data: SCSI device reference
503 *
504 * This is an iterator function called for each SCSI command in
505 * a host and if the command is pending in the LLD for the
506 * specific device(lun) then device specific pending I/O counter
507 * is updated in the device structure.
508 *
509 * Return: true always.
510 */
511
512static bool mpi3mr_count_dev_pending(struct request *rq, void *data)
513{
514 struct scsi_device *sdev = (struct scsi_device *)data;
515 struct mpi3mr_sdev_priv_data *sdev_priv_data = sdev->hostdata;
516 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
517 struct scmd_priv *priv;
518
519 if (scmd) {
520 priv = scsi_cmd_priv(scmd);
521 if (!priv->in_lld_scope)
522 goto out;
523 if (scmd->device == sdev)
524 sdev_priv_data->pend_count++;
525 }
526
527out:
528 return true;
529}
530
531/**
532 * mpi3mr_count_tgt_pending - Count commands pending for target
533 * @rq: Block request
534 * @data: SCSI target reference
535 *
536 * This is an iterator function called for each SCSI command in
537 * a host and if the command is pending in the LLD for the
538 * specific target then target specific pending I/O counter is
539 * updated in the target structure.
540 *
541 * Return: true always.
542 */
543
544static bool mpi3mr_count_tgt_pending(struct request *rq, void *data)
545{
546 struct scsi_target *starget = (struct scsi_target *)data;
547 struct mpi3mr_stgt_priv_data *stgt_priv_data = starget->hostdata;
548 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
549 struct scmd_priv *priv;
550
551 if (scmd) {
552 priv = scsi_cmd_priv(scmd);
553 if (!priv->in_lld_scope)
554 goto out;
555 if (scmd->device && (scsi_target(scmd->device) == starget))
556 stgt_priv_data->pend_count++;
557 }
558
559out:
560 return true;
561}
562
563/**
564 * mpi3mr_flush_host_io - Flush host I/Os
565 * @mrioc: Adapter instance reference
566 *
567 * Flush all of the pending I/Os by calling
568 * blk_mq_tagset_busy_iter() for each possible tag. This is
569 * executed post controller reset
570 *
571 * Return: Nothing.
572 */
573void mpi3mr_flush_host_io(struct mpi3mr_ioc *mrioc)
574{
575 struct Scsi_Host *shost = mrioc->shost;
576
577 mrioc->flush_io_count = 0;
578 ioc_info(mrioc, "%s :Flushing Host I/O cmds post reset\n", __func__);
579 blk_mq_tagset_busy_iter(&shost->tag_set,
580 mpi3mr_flush_scmd, (void *)mrioc);
581 ioc_info(mrioc, "%s :Flushed %d Host I/O cmds\n", __func__,
582 mrioc->flush_io_count);
583}
584
585/**
586 * mpi3mr_flush_cmds_for_unrecovered_controller - Flush all pending cmds
587 * @mrioc: Adapter instance reference
588 *
589 * This function waits for currently running IO poll threads to
590 * exit and then flushes all host I/Os and any internal pending
591 * cmds. This is executed after controller is marked as
592 * unrecoverable.
593 *
594 * Return: Nothing.
595 */
596void mpi3mr_flush_cmds_for_unrecovered_controller(struct mpi3mr_ioc *mrioc)
597{
598 struct Scsi_Host *shost = mrioc->shost;
599 int i;
600
601 if (!mrioc->unrecoverable)
602 return;
603
604 if (mrioc->op_reply_qinfo) {
605 for (i = 0; i < mrioc->num_queues; i++) {
606 while (atomic_read(&mrioc->op_reply_qinfo[i].in_use))
607 udelay(500);
608 atomic_set(&mrioc->op_reply_qinfo[i].pend_ios, 0);
609 }
610 }
611 mrioc->flush_io_count = 0;
612 blk_mq_tagset_busy_iter(&shost->tag_set,
613 mpi3mr_flush_scmd, (void *)mrioc);
614 mpi3mr_flush_delayed_cmd_lists(mrioc);
615 mpi3mr_flush_drv_cmds(mrioc);
616}
617
618/**
619 * mpi3mr_alloc_tgtdev - target device allocator
620 *
621 * Allocate target device instance and initialize the reference
622 * count
623 *
624 * Return: target device instance.
625 */
626static struct mpi3mr_tgt_dev *mpi3mr_alloc_tgtdev(void)
627{
628 struct mpi3mr_tgt_dev *tgtdev;
629
630 tgtdev = kzalloc(sizeof(*tgtdev), GFP_ATOMIC);
631 if (!tgtdev)
632 return NULL;
633 kref_init(&tgtdev->ref_count);
634 return tgtdev;
635}
636
637/**
638 * mpi3mr_tgtdev_add_to_list -Add tgtdevice to the list
639 * @mrioc: Adapter instance reference
640 * @tgtdev: Target device
641 *
642 * Add the target device to the target device list
643 *
644 * Return: Nothing.
645 */
646static void mpi3mr_tgtdev_add_to_list(struct mpi3mr_ioc *mrioc,
647 struct mpi3mr_tgt_dev *tgtdev)
648{
649 unsigned long flags;
650
651 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
652 mpi3mr_tgtdev_get(tgtdev);
653 INIT_LIST_HEAD(&tgtdev->list);
654 list_add_tail(&tgtdev->list, &mrioc->tgtdev_list);
655 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
656}
657
658/**
659 * mpi3mr_tgtdev_del_from_list -Delete tgtdevice from the list
660 * @mrioc: Adapter instance reference
661 * @tgtdev: Target device
662 *
663 * Remove the target device from the target device list
664 *
665 * Return: Nothing.
666 */
667static void mpi3mr_tgtdev_del_from_list(struct mpi3mr_ioc *mrioc,
668 struct mpi3mr_tgt_dev *tgtdev)
669{
670 unsigned long flags;
671
672 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
673 if (!list_empty(&tgtdev->list)) {
674 list_del_init(&tgtdev->list);
675 mpi3mr_tgtdev_put(tgtdev);
676 }
677 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
678}
679
680/**
681 * __mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle
682 * @mrioc: Adapter instance reference
683 * @handle: Device handle
684 *
685 * Accessor to retrieve target device from the device handle.
686 * Non Lock version
687 *
688 * Return: Target device reference.
689 */
690static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_handle(
691 struct mpi3mr_ioc *mrioc, u16 handle)
692{
693 struct mpi3mr_tgt_dev *tgtdev;
694
695 assert_spin_locked(&mrioc->tgtdev_lock);
696 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list)
697 if (tgtdev->dev_handle == handle)
698 goto found_tgtdev;
699 return NULL;
700
701found_tgtdev:
702 mpi3mr_tgtdev_get(tgtdev);
703 return tgtdev;
704}
705
706/**
707 * mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle
708 * @mrioc: Adapter instance reference
709 * @handle: Device handle
710 *
711 * Accessor to retrieve target device from the device handle.
712 * Lock version
713 *
714 * Return: Target device reference.
715 */
716struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_handle(
717 struct mpi3mr_ioc *mrioc, u16 handle)
718{
719 struct mpi3mr_tgt_dev *tgtdev;
720 unsigned long flags;
721
722 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
723 tgtdev = __mpi3mr_get_tgtdev_by_handle(mrioc, handle);
724 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
725 return tgtdev;
726}
727
728/**
729 * __mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persist ID
730 * @mrioc: Adapter instance reference
731 * @persist_id: Persistent ID
732 *
733 * Accessor to retrieve target device from the Persistent ID.
734 * Non Lock version
735 *
736 * Return: Target device reference.
737 */
738static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_perst_id(
739 struct mpi3mr_ioc *mrioc, u16 persist_id)
740{
741 struct mpi3mr_tgt_dev *tgtdev;
742
743 assert_spin_locked(&mrioc->tgtdev_lock);
744 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list)
745 if (tgtdev->perst_id == persist_id)
746 goto found_tgtdev;
747 return NULL;
748
749found_tgtdev:
750 mpi3mr_tgtdev_get(tgtdev);
751 return tgtdev;
752}
753
754/**
755 * mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persistent ID
756 * @mrioc: Adapter instance reference
757 * @persist_id: Persistent ID
758 *
759 * Accessor to retrieve target device from the Persistent ID.
760 * Lock version
761 *
762 * Return: Target device reference.
763 */
764static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_perst_id(
765 struct mpi3mr_ioc *mrioc, u16 persist_id)
766{
767 struct mpi3mr_tgt_dev *tgtdev;
768 unsigned long flags;
769
770 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
771 tgtdev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, persist_id);
772 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
773 return tgtdev;
774}
775
776/**
777 * __mpi3mr_get_tgtdev_from_tgtpriv -Get tgtdev from tgt private
778 * @mrioc: Adapter instance reference
779 * @tgt_priv: Target private data
780 *
781 * Accessor to return target device from the target private
782 * data. Non Lock version
783 *
784 * Return: Target device reference.
785 */
786static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_from_tgtpriv(
787 struct mpi3mr_ioc *mrioc, struct mpi3mr_stgt_priv_data *tgt_priv)
788{
789 struct mpi3mr_tgt_dev *tgtdev;
790
791 assert_spin_locked(&mrioc->tgtdev_lock);
792 tgtdev = tgt_priv->tgt_dev;
793 if (tgtdev)
794 mpi3mr_tgtdev_get(tgtdev);
795 return tgtdev;
796}
797
798/**
799 * mpi3mr_set_io_divert_for_all_vd_in_tg -set divert for TG VDs
800 * @mrioc: Adapter instance reference
801 * @tg: Throttle group information pointer
802 * @divert_value: 1 or 0
803 *
804 * Accessor to set io_divert flag for each device associated
805 * with the given throttle group with the given value.
806 *
807 * Return: None.
808 */
809static void mpi3mr_set_io_divert_for_all_vd_in_tg(struct mpi3mr_ioc *mrioc,
810 struct mpi3mr_throttle_group_info *tg, u8 divert_value)
811{
812 unsigned long flags;
813 struct mpi3mr_tgt_dev *tgtdev;
814 struct mpi3mr_stgt_priv_data *tgt_priv;
815
816 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
817 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
818 if (tgtdev->starget && tgtdev->starget->hostdata) {
819 tgt_priv = tgtdev->starget->hostdata;
820 if (tgt_priv->throttle_group == tg)
821 tgt_priv->io_divert = divert_value;
822 }
823 }
824 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
825}
826
827/**
828 * mpi3mr_print_device_event_notice - print notice related to post processing of
829 * device event after controller reset.
830 *
831 * @mrioc: Adapter instance reference
832 * @device_add: true for device add event and false for device removal event
833 *
834 * Return: None.
835 */
836void mpi3mr_print_device_event_notice(struct mpi3mr_ioc *mrioc,
837 bool device_add)
838{
839 ioc_notice(mrioc, "Device %s was in progress before the reset and\n",
840 (device_add ? "addition" : "removal"));
841 ioc_notice(mrioc, "completed after reset, verify whether the exposed devices\n");
842 ioc_notice(mrioc, "are matched with attached devices for correctness\n");
843}
844
845/**
846 * mpi3mr_remove_tgtdev_from_host - Remove dev from upper layers
847 * @mrioc: Adapter instance reference
848 * @tgtdev: Target device structure
849 *
850 * Checks whether the device is exposed to upper layers and if it
851 * is then remove the device from upper layers by calling
852 * scsi_remove_target().
853 *
854 * Return: 0 on success, non zero on failure.
855 */
856void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc,
857 struct mpi3mr_tgt_dev *tgtdev)
858{
859 struct mpi3mr_stgt_priv_data *tgt_priv;
860
861 ioc_info(mrioc, "%s :Removing handle(0x%04x), wwid(0x%016llx)\n",
862 __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
863 if (tgtdev->starget && tgtdev->starget->hostdata) {
864 tgt_priv = tgtdev->starget->hostdata;
865 atomic_set(&tgt_priv->block_io, 0);
866 tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
867 }
868
869 if (!mrioc->sas_transport_enabled || (tgtdev->dev_type !=
870 MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl) {
871 if (tgtdev->starget) {
872 if (mrioc->current_event)
873 mrioc->current_event->pending_at_sml = 1;
874 scsi_remove_target(&tgtdev->starget->dev);
875 tgtdev->host_exposed = 0;
876 if (mrioc->current_event) {
877 mrioc->current_event->pending_at_sml = 0;
878 if (mrioc->current_event->discard) {
879 mpi3mr_print_device_event_notice(mrioc,
880 false);
881 return;
882 }
883 }
884 }
885 } else
886 mpi3mr_remove_tgtdev_from_sas_transport(mrioc, tgtdev);
887
888 ioc_info(mrioc, "%s :Removed handle(0x%04x), wwid(0x%016llx)\n",
889 __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
890}
891
892/**
893 * mpi3mr_report_tgtdev_to_host - Expose device to upper layers
894 * @mrioc: Adapter instance reference
895 * @perst_id: Persistent ID of the device
896 *
897 * Checks whether the device can be exposed to upper layers and
898 * if it is not then expose the device to upper layers by
899 * calling scsi_scan_target().
900 *
901 * Return: 0 on success, non zero on failure.
902 */
903static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
904 u16 perst_id)
905{
906 int retval = 0;
907 struct mpi3mr_tgt_dev *tgtdev;
908
909 if (mrioc->reset_in_progress)
910 return -1;
911
912 tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
913 if (!tgtdev) {
914 retval = -1;
915 goto out;
916 }
917 if (tgtdev->is_hidden || tgtdev->host_exposed) {
918 retval = -1;
919 goto out;
920 }
921 if (!mrioc->sas_transport_enabled || (tgtdev->dev_type !=
922 MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl){
923 tgtdev->host_exposed = 1;
924 if (mrioc->current_event)
925 mrioc->current_event->pending_at_sml = 1;
926 scsi_scan_target(&mrioc->shost->shost_gendev,
927 mrioc->scsi_device_channel, tgtdev->perst_id,
928 SCAN_WILD_CARD, SCSI_SCAN_INITIAL);
929 if (!tgtdev->starget)
930 tgtdev->host_exposed = 0;
931 if (mrioc->current_event) {
932 mrioc->current_event->pending_at_sml = 0;
933 if (mrioc->current_event->discard) {
934 mpi3mr_print_device_event_notice(mrioc, true);
935 goto out;
936 }
937 }
938 } else
939 mpi3mr_report_tgtdev_to_sas_transport(mrioc, tgtdev);
940out:
941 if (tgtdev)
942 mpi3mr_tgtdev_put(tgtdev);
943
944 return retval;
945}
946
947/**
948 * mpi3mr_change_queue_depth- Change QD callback handler
949 * @sdev: SCSI device reference
950 * @q_depth: Queue depth
951 *
952 * Validate and limit QD and call scsi_change_queue_depth.
953 *
954 * Return: return value of scsi_change_queue_depth
955 */
956static int mpi3mr_change_queue_depth(struct scsi_device *sdev,
957 int q_depth)
958{
959 struct scsi_target *starget = scsi_target(sdev);
960 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
961 int retval = 0;
962
963 if (!sdev->tagged_supported)
964 q_depth = 1;
965 if (q_depth > shost->can_queue)
966 q_depth = shost->can_queue;
967 else if (!q_depth)
968 q_depth = MPI3MR_DEFAULT_SDEV_QD;
969 retval = scsi_change_queue_depth(sdev, q_depth);
970 sdev->max_queue_depth = sdev->queue_depth;
971
972 return retval;
973}
974
975/**
976 * mpi3mr_update_sdev - Update SCSI device information
977 * @sdev: SCSI device reference
978 * @data: target device reference
979 *
980 * This is an iterator function called for each SCSI device in a
981 * target to update the target specific information into each
982 * SCSI device.
983 *
984 * Return: Nothing.
985 */
986static void
987mpi3mr_update_sdev(struct scsi_device *sdev, void *data)
988{
989 struct mpi3mr_tgt_dev *tgtdev;
990
991 tgtdev = (struct mpi3mr_tgt_dev *)data;
992 if (!tgtdev)
993 return;
994
995 mpi3mr_change_queue_depth(sdev, tgtdev->q_depth);
996 switch (tgtdev->dev_type) {
997 case MPI3_DEVICE_DEVFORM_PCIE:
998 /*The block layer hw sector size = 512*/
999 if ((tgtdev->dev_spec.pcie_inf.dev_info &
1000 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
1001 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) {
1002 blk_queue_max_hw_sectors(sdev->request_queue,
1003 tgtdev->dev_spec.pcie_inf.mdts / 512);
1004 if (tgtdev->dev_spec.pcie_inf.pgsz == 0)
1005 blk_queue_virt_boundary(sdev->request_queue,
1006 ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1));
1007 else
1008 blk_queue_virt_boundary(sdev->request_queue,
1009 ((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1));
1010 }
1011 break;
1012 default:
1013 break;
1014 }
1015}
1016
1017/**
1018 * mpi3mr_rfresh_tgtdevs - Refresh target device exposure
1019 * @mrioc: Adapter instance reference
1020 *
1021 * This is executed post controller reset to identify any
1022 * missing devices during reset and remove from the upper layers
1023 * or expose any newly detected device to the upper layers.
1024 *
1025 * Return: Nothing.
1026 */
1027
1028void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc)
1029{
1030 struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
1031
1032 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
1033 list) {
1034 if (tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) {
1035 dprint_reset(mrioc, "removing target device with perst_id(%d)\n",
1036 tgtdev->perst_id);
1037 if (tgtdev->host_exposed)
1038 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1039 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
1040 mpi3mr_tgtdev_put(tgtdev);
1041 }
1042 }
1043
1044 tgtdev = NULL;
1045 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
1046 if ((tgtdev->dev_handle != MPI3MR_INVALID_DEV_HANDLE) &&
1047 !tgtdev->is_hidden && !tgtdev->host_exposed)
1048 mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id);
1049 }
1050}
1051
1052/**
1053 * mpi3mr_update_tgtdev - DevStatusChange evt bottomhalf
1054 * @mrioc: Adapter instance reference
1055 * @tgtdev: Target device internal structure
1056 * @dev_pg0: New device page0
1057 * @is_added: Flag to indicate the device is just added
1058 *
1059 * Update the information from the device page0 into the driver
1060 * cached target device structure.
1061 *
1062 * Return: Nothing.
1063 */
1064static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
1065 struct mpi3mr_tgt_dev *tgtdev, struct mpi3_device_page0 *dev_pg0,
1066 bool is_added)
1067{
1068 u16 flags = 0;
1069 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
1070 struct mpi3mr_enclosure_node *enclosure_dev = NULL;
1071 u8 prot_mask = 0;
1072
1073 tgtdev->perst_id = le16_to_cpu(dev_pg0->persistent_id);
1074 tgtdev->dev_handle = le16_to_cpu(dev_pg0->dev_handle);
1075 tgtdev->dev_type = dev_pg0->device_form;
1076 tgtdev->io_unit_port = dev_pg0->io_unit_port;
1077 tgtdev->encl_handle = le16_to_cpu(dev_pg0->enclosure_handle);
1078 tgtdev->parent_handle = le16_to_cpu(dev_pg0->parent_dev_handle);
1079 tgtdev->slot = le16_to_cpu(dev_pg0->slot);
1080 tgtdev->q_depth = le16_to_cpu(dev_pg0->queue_depth);
1081 tgtdev->wwid = le64_to_cpu(dev_pg0->wwid);
1082 tgtdev->devpg0_flag = le16_to_cpu(dev_pg0->flags);
1083
1084 if (tgtdev->encl_handle)
1085 enclosure_dev = mpi3mr_enclosure_find_by_handle(mrioc,
1086 tgtdev->encl_handle);
1087 if (enclosure_dev)
1088 tgtdev->enclosure_logical_id = le64_to_cpu(
1089 enclosure_dev->pg0.enclosure_logical_id);
1090
1091 flags = tgtdev->devpg0_flag;
1092
1093 tgtdev->is_hidden = (flags & MPI3_DEVICE0_FLAGS_HIDDEN);
1094
1095 if (is_added == true)
1096 tgtdev->io_throttle_enabled =
1097 (flags & MPI3_DEVICE0_FLAGS_IO_THROTTLING_REQUIRED) ? 1 : 0;
1098
1099
1100 if (tgtdev->starget && tgtdev->starget->hostdata) {
1101 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
1102 tgtdev->starget->hostdata;
1103 scsi_tgt_priv_data->perst_id = tgtdev->perst_id;
1104 scsi_tgt_priv_data->dev_handle = tgtdev->dev_handle;
1105 scsi_tgt_priv_data->dev_type = tgtdev->dev_type;
1106 scsi_tgt_priv_data->io_throttle_enabled =
1107 tgtdev->io_throttle_enabled;
1108 if (is_added == true)
1109 atomic_set(&scsi_tgt_priv_data->block_io, 0);
1110 }
1111
1112 switch (dev_pg0->access_status) {
1113 case MPI3_DEVICE0_ASTATUS_NO_ERRORS:
1114 case MPI3_DEVICE0_ASTATUS_PREPARE:
1115 case MPI3_DEVICE0_ASTATUS_NEEDS_INITIALIZATION:
1116 case MPI3_DEVICE0_ASTATUS_DEVICE_MISSING_DELAY:
1117 break;
1118 default:
1119 tgtdev->is_hidden = 1;
1120 break;
1121 }
1122
1123 switch (tgtdev->dev_type) {
1124 case MPI3_DEVICE_DEVFORM_SAS_SATA:
1125 {
1126 struct mpi3_device0_sas_sata_format *sasinf =
1127 &dev_pg0->device_specific.sas_sata_format;
1128 u16 dev_info = le16_to_cpu(sasinf->device_info);
1129
1130 tgtdev->dev_spec.sas_sata_inf.dev_info = dev_info;
1131 tgtdev->dev_spec.sas_sata_inf.sas_address =
1132 le64_to_cpu(sasinf->sas_address);
1133 tgtdev->dev_spec.sas_sata_inf.phy_id = sasinf->phy_num;
1134 tgtdev->dev_spec.sas_sata_inf.attached_phy_id =
1135 sasinf->attached_phy_identifier;
1136 if ((dev_info & MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_MASK) !=
1137 MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_END_DEVICE)
1138 tgtdev->is_hidden = 1;
1139 else if (!(dev_info & (MPI3_SAS_DEVICE_INFO_STP_SATA_TARGET |
1140 MPI3_SAS_DEVICE_INFO_SSP_TARGET)))
1141 tgtdev->is_hidden = 1;
1142
1143 if (((tgtdev->devpg0_flag &
1144 MPI3_DEVICE0_FLAGS_ATT_METHOD_DIR_ATTACHED)
1145 && (tgtdev->devpg0_flag &
1146 MPI3_DEVICE0_FLAGS_ATT_METHOD_VIRTUAL)) ||
1147 (tgtdev->parent_handle == 0xFFFF))
1148 tgtdev->non_stl = 1;
1149 if (tgtdev->dev_spec.sas_sata_inf.hba_port)
1150 tgtdev->dev_spec.sas_sata_inf.hba_port->port_id =
1151 dev_pg0->io_unit_port;
1152 break;
1153 }
1154 case MPI3_DEVICE_DEVFORM_PCIE:
1155 {
1156 struct mpi3_device0_pcie_format *pcieinf =
1157 &dev_pg0->device_specific.pcie_format;
1158 u16 dev_info = le16_to_cpu(pcieinf->device_info);
1159
1160 tgtdev->dev_spec.pcie_inf.dev_info = dev_info;
1161 tgtdev->dev_spec.pcie_inf.capb =
1162 le32_to_cpu(pcieinf->capabilities);
1163 tgtdev->dev_spec.pcie_inf.mdts = MPI3MR_DEFAULT_MDTS;
1164 /* 2^12 = 4096 */
1165 tgtdev->dev_spec.pcie_inf.pgsz = 12;
1166 if (dev_pg0->access_status == MPI3_DEVICE0_ASTATUS_NO_ERRORS) {
1167 tgtdev->dev_spec.pcie_inf.mdts =
1168 le32_to_cpu(pcieinf->maximum_data_transfer_size);
1169 tgtdev->dev_spec.pcie_inf.pgsz = pcieinf->page_size;
1170 tgtdev->dev_spec.pcie_inf.reset_to =
1171 max_t(u8, pcieinf->controller_reset_to,
1172 MPI3MR_INTADMCMD_TIMEOUT);
1173 tgtdev->dev_spec.pcie_inf.abort_to =
1174 max_t(u8, pcieinf->nvme_abort_to,
1175 MPI3MR_INTADMCMD_TIMEOUT);
1176 }
1177 if (tgtdev->dev_spec.pcie_inf.mdts > (1024 * 1024))
1178 tgtdev->dev_spec.pcie_inf.mdts = (1024 * 1024);
1179 if (((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
1180 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) &&
1181 ((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
1182 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_SCSI_DEVICE))
1183 tgtdev->is_hidden = 1;
1184 tgtdev->non_stl = 1;
1185 if (!mrioc->shost)
1186 break;
1187 prot_mask = scsi_host_get_prot(mrioc->shost);
1188 if (prot_mask & SHOST_DIX_TYPE0_PROTECTION) {
1189 scsi_host_set_prot(mrioc->shost, prot_mask & 0x77);
1190 ioc_info(mrioc,
1191 "%s : Disabling DIX0 prot capability\n", __func__);
1192 ioc_info(mrioc,
1193 "because HBA does not support DIX0 operation on NVME drives\n");
1194 }
1195 break;
1196 }
1197 case MPI3_DEVICE_DEVFORM_VD:
1198 {
1199 struct mpi3_device0_vd_format *vdinf =
1200 &dev_pg0->device_specific.vd_format;
1201 struct mpi3mr_throttle_group_info *tg = NULL;
1202 u16 vdinf_io_throttle_group =
1203 le16_to_cpu(vdinf->io_throttle_group);
1204
1205 tgtdev->dev_spec.vd_inf.state = vdinf->vd_state;
1206 if (vdinf->vd_state == MPI3_DEVICE0_VD_STATE_OFFLINE)
1207 tgtdev->is_hidden = 1;
1208 tgtdev->non_stl = 1;
1209 tgtdev->dev_spec.vd_inf.tg_id = vdinf_io_throttle_group;
1210 tgtdev->dev_spec.vd_inf.tg_high =
1211 le16_to_cpu(vdinf->io_throttle_group_high) * 2048;
1212 tgtdev->dev_spec.vd_inf.tg_low =
1213 le16_to_cpu(vdinf->io_throttle_group_low) * 2048;
1214 if (vdinf_io_throttle_group < mrioc->num_io_throttle_group) {
1215 tg = mrioc->throttle_groups + vdinf_io_throttle_group;
1216 tg->id = vdinf_io_throttle_group;
1217 tg->high = tgtdev->dev_spec.vd_inf.tg_high;
1218 tg->low = tgtdev->dev_spec.vd_inf.tg_low;
1219 tg->qd_reduction =
1220 tgtdev->dev_spec.vd_inf.tg_qd_reduction;
1221 if (is_added == true)
1222 tg->fw_qd = tgtdev->q_depth;
1223 tg->modified_qd = tgtdev->q_depth;
1224 }
1225 tgtdev->dev_spec.vd_inf.tg = tg;
1226 if (scsi_tgt_priv_data)
1227 scsi_tgt_priv_data->throttle_group = tg;
1228 break;
1229 }
1230 default:
1231 break;
1232 }
1233}
1234
1235/**
1236 * mpi3mr_devstatuschg_evt_bh - DevStatusChange evt bottomhalf
1237 * @mrioc: Adapter instance reference
1238 * @fwevt: Firmware event information.
1239 *
1240 * Process Device status Change event and based on device's new
1241 * information, either expose the device to the upper layers, or
1242 * remove the device from upper layers.
1243 *
1244 * Return: Nothing.
1245 */
1246static void mpi3mr_devstatuschg_evt_bh(struct mpi3mr_ioc *mrioc,
1247 struct mpi3mr_fwevt *fwevt)
1248{
1249 u16 dev_handle = 0;
1250 u8 uhide = 0, delete = 0, cleanup = 0;
1251 struct mpi3mr_tgt_dev *tgtdev = NULL;
1252 struct mpi3_event_data_device_status_change *evtdata =
1253 (struct mpi3_event_data_device_status_change *)fwevt->event_data;
1254
1255 dev_handle = le16_to_cpu(evtdata->dev_handle);
1256 ioc_info(mrioc,
1257 "%s :device status change: handle(0x%04x): reason code(0x%x)\n",
1258 __func__, dev_handle, evtdata->reason_code);
1259 switch (evtdata->reason_code) {
1260 case MPI3_EVENT_DEV_STAT_RC_HIDDEN:
1261 delete = 1;
1262 break;
1263 case MPI3_EVENT_DEV_STAT_RC_NOT_HIDDEN:
1264 uhide = 1;
1265 break;
1266 case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING:
1267 delete = 1;
1268 cleanup = 1;
1269 break;
1270 default:
1271 ioc_info(mrioc, "%s :Unhandled reason code(0x%x)\n", __func__,
1272 evtdata->reason_code);
1273 break;
1274 }
1275
1276 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
1277 if (!tgtdev)
1278 goto out;
1279 if (uhide) {
1280 tgtdev->is_hidden = 0;
1281 if (!tgtdev->host_exposed)
1282 mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id);
1283 }
1284 if (tgtdev->starget && tgtdev->starget->hostdata) {
1285 if (delete)
1286 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1287 }
1288 if (cleanup) {
1289 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
1290 mpi3mr_tgtdev_put(tgtdev);
1291 }
1292
1293out:
1294 if (tgtdev)
1295 mpi3mr_tgtdev_put(tgtdev);
1296}
1297
1298/**
1299 * mpi3mr_devinfochg_evt_bh - DeviceInfoChange evt bottomhalf
1300 * @mrioc: Adapter instance reference
1301 * @dev_pg0: New device page0
1302 *
1303 * Process Device Info Change event and based on device's new
1304 * information, either expose the device to the upper layers, or
1305 * remove the device from upper layers or update the details of
1306 * the device.
1307 *
1308 * Return: Nothing.
1309 */
1310static void mpi3mr_devinfochg_evt_bh(struct mpi3mr_ioc *mrioc,
1311 struct mpi3_device_page0 *dev_pg0)
1312{
1313 struct mpi3mr_tgt_dev *tgtdev = NULL;
1314 u16 dev_handle = 0, perst_id = 0;
1315
1316 perst_id = le16_to_cpu(dev_pg0->persistent_id);
1317 dev_handle = le16_to_cpu(dev_pg0->dev_handle);
1318 ioc_info(mrioc,
1319 "%s :Device info change: handle(0x%04x): persist_id(0x%x)\n",
1320 __func__, dev_handle, perst_id);
1321 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
1322 if (!tgtdev)
1323 goto out;
1324 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, false);
1325 if (!tgtdev->is_hidden && !tgtdev->host_exposed)
1326 mpi3mr_report_tgtdev_to_host(mrioc, perst_id);
1327 if (tgtdev->is_hidden && tgtdev->host_exposed)
1328 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1329 if (!tgtdev->is_hidden && tgtdev->host_exposed && tgtdev->starget)
1330 starget_for_each_device(tgtdev->starget, (void *)tgtdev,
1331 mpi3mr_update_sdev);
1332out:
1333 if (tgtdev)
1334 mpi3mr_tgtdev_put(tgtdev);
1335}
1336
1337/**
1338 * mpi3mr_free_enclosure_list - release enclosures
1339 * @mrioc: Adapter instance reference
1340 *
1341 * Free memory allocated during encloure add.
1342 *
1343 * Return nothing.
1344 */
1345void mpi3mr_free_enclosure_list(struct mpi3mr_ioc *mrioc)
1346{
1347 struct mpi3mr_enclosure_node *enclosure_dev, *enclosure_dev_next;
1348
1349 list_for_each_entry_safe(enclosure_dev,
1350 enclosure_dev_next, &mrioc->enclosure_list, list) {
1351 list_del(&enclosure_dev->list);
1352 kfree(enclosure_dev);
1353 }
1354}
1355
1356/**
1357 * mpi3mr_enclosure_find_by_handle - enclosure search by handle
1358 * @mrioc: Adapter instance reference
1359 * @handle: Firmware device handle of the enclosure
1360 *
1361 * This searches for enclosure device based on handle, then returns the
1362 * enclosure object.
1363 *
1364 * Return: Enclosure object reference or NULL
1365 */
1366struct mpi3mr_enclosure_node *mpi3mr_enclosure_find_by_handle(
1367 struct mpi3mr_ioc *mrioc, u16 handle)
1368{
1369 struct mpi3mr_enclosure_node *enclosure_dev, *r = NULL;
1370
1371 list_for_each_entry(enclosure_dev, &mrioc->enclosure_list, list) {
1372 if (le16_to_cpu(enclosure_dev->pg0.enclosure_handle) != handle)
1373 continue;
1374 r = enclosure_dev;
1375 goto out;
1376 }
1377out:
1378 return r;
1379}
1380
1381/**
1382 * mpi3mr_encldev_add_chg_evt_debug - debug for enclosure event
1383 * @mrioc: Adapter instance reference
1384 * @encl_pg0: Enclosure page 0.
1385 * @is_added: Added event or not
1386 *
1387 * Return nothing.
1388 */
1389static void mpi3mr_encldev_add_chg_evt_debug(struct mpi3mr_ioc *mrioc,
1390 struct mpi3_enclosure_page0 *encl_pg0, u8 is_added)
1391{
1392 char *reason_str = NULL;
1393
1394 if (!(mrioc->logging_level & MPI3_DEBUG_EVENT_WORK_TASK))
1395 return;
1396
1397 if (is_added)
1398 reason_str = "enclosure added";
1399 else
1400 reason_str = "enclosure dev status changed";
1401
1402 ioc_info(mrioc,
1403 "%s: handle(0x%04x), enclosure logical id(0x%016llx)\n",
1404 reason_str, le16_to_cpu(encl_pg0->enclosure_handle),
1405 (unsigned long long)le64_to_cpu(encl_pg0->enclosure_logical_id));
1406 ioc_info(mrioc,
1407 "number of slots(%d), port(%d), flags(0x%04x), present(%d)\n",
1408 le16_to_cpu(encl_pg0->num_slots), encl_pg0->io_unit_port,
1409 le16_to_cpu(encl_pg0->flags),
1410 ((le16_to_cpu(encl_pg0->flags) &
1411 MPI3_ENCLS0_FLAGS_ENCL_DEV_PRESENT_MASK) >> 4));
1412}
1413
1414/**
1415 * mpi3mr_encldev_add_chg_evt_bh - Enclosure evt bottomhalf
1416 * @mrioc: Adapter instance reference
1417 * @fwevt: Firmware event reference
1418 *
1419 * Prints information about the Enclosure device status or
1420 * Enclosure add events if logging is enabled and add or remove
1421 * the enclosure from the controller's internal list of
1422 * enclosures.
1423 *
1424 * Return: Nothing.
1425 */
1426static void mpi3mr_encldev_add_chg_evt_bh(struct mpi3mr_ioc *mrioc,
1427 struct mpi3mr_fwevt *fwevt)
1428{
1429 struct mpi3mr_enclosure_node *enclosure_dev = NULL;
1430 struct mpi3_enclosure_page0 *encl_pg0;
1431 u16 encl_handle;
1432 u8 added, present;
1433
1434 encl_pg0 = (struct mpi3_enclosure_page0 *) fwevt->event_data;
1435 added = (fwevt->event_id == MPI3_EVENT_ENCL_DEVICE_ADDED) ? 1 : 0;
1436 mpi3mr_encldev_add_chg_evt_debug(mrioc, encl_pg0, added);
1437
1438
1439 encl_handle = le16_to_cpu(encl_pg0->enclosure_handle);
1440 present = ((le16_to_cpu(encl_pg0->flags) &
1441 MPI3_ENCLS0_FLAGS_ENCL_DEV_PRESENT_MASK) >> 4);
1442
1443 if (encl_handle)
1444 enclosure_dev = mpi3mr_enclosure_find_by_handle(mrioc,
1445 encl_handle);
1446 if (!enclosure_dev && present) {
1447 enclosure_dev =
1448 kzalloc(sizeof(struct mpi3mr_enclosure_node),
1449 GFP_KERNEL);
1450 if (!enclosure_dev)
1451 return;
1452 list_add_tail(&enclosure_dev->list,
1453 &mrioc->enclosure_list);
1454 }
1455 if (enclosure_dev) {
1456 if (!present) {
1457 list_del(&enclosure_dev->list);
1458 kfree(enclosure_dev);
1459 } else
1460 memcpy(&enclosure_dev->pg0, encl_pg0,
1461 sizeof(enclosure_dev->pg0));
1462
1463 }
1464}
1465
1466/**
1467 * mpi3mr_sastopochg_evt_debug - SASTopoChange details
1468 * @mrioc: Adapter instance reference
1469 * @event_data: SAS topology change list event data
1470 *
1471 * Prints information about the SAS topology change event.
1472 *
1473 * Return: Nothing.
1474 */
1475static void
1476mpi3mr_sastopochg_evt_debug(struct mpi3mr_ioc *mrioc,
1477 struct mpi3_event_data_sas_topology_change_list *event_data)
1478{
1479 int i;
1480 u16 handle;
1481 u8 reason_code, phy_number;
1482 char *status_str = NULL;
1483 u8 link_rate, prev_link_rate;
1484
1485 switch (event_data->exp_status) {
1486 case MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
1487 status_str = "remove";
1488 break;
1489 case MPI3_EVENT_SAS_TOPO_ES_RESPONDING:
1490 status_str = "responding";
1491 break;
1492 case MPI3_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
1493 status_str = "remove delay";
1494 break;
1495 case MPI3_EVENT_SAS_TOPO_ES_NO_EXPANDER:
1496 status_str = "direct attached";
1497 break;
1498 default:
1499 status_str = "unknown status";
1500 break;
1501 }
1502 ioc_info(mrioc, "%s :sas topology change: (%s)\n",
1503 __func__, status_str);
1504 ioc_info(mrioc,
1505 "%s :\texpander_handle(0x%04x), port(%d), enclosure_handle(0x%04x) start_phy(%02d), num_entries(%d)\n",
1506 __func__, le16_to_cpu(event_data->expander_dev_handle),
1507 event_data->io_unit_port,
1508 le16_to_cpu(event_data->enclosure_handle),
1509 event_data->start_phy_num, event_data->num_entries);
1510 for (i = 0; i < event_data->num_entries; i++) {
1511 handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle);
1512 if (!handle)
1513 continue;
1514 phy_number = event_data->start_phy_num + i;
1515 reason_code = event_data->phy_entry[i].status &
1516 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
1517 switch (reason_code) {
1518 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
1519 status_str = "target remove";
1520 break;
1521 case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING:
1522 status_str = "delay target remove";
1523 break;
1524 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
1525 status_str = "link status change";
1526 break;
1527 case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE:
1528 status_str = "link status no change";
1529 break;
1530 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
1531 status_str = "target responding";
1532 break;
1533 default:
1534 status_str = "unknown";
1535 break;
1536 }
1537 link_rate = event_data->phy_entry[i].link_rate >> 4;
1538 prev_link_rate = event_data->phy_entry[i].link_rate & 0xF;
1539 ioc_info(mrioc,
1540 "%s :\tphy(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n",
1541 __func__, phy_number, handle, status_str, link_rate,
1542 prev_link_rate);
1543 }
1544}
1545
1546/**
1547 * mpi3mr_sastopochg_evt_bh - SASTopologyChange evt bottomhalf
1548 * @mrioc: Adapter instance reference
1549 * @fwevt: Firmware event reference
1550 *
1551 * Prints information about the SAS topology change event and
1552 * for "not responding" event code, removes the device from the
1553 * upper layers.
1554 *
1555 * Return: Nothing.
1556 */
1557static void mpi3mr_sastopochg_evt_bh(struct mpi3mr_ioc *mrioc,
1558 struct mpi3mr_fwevt *fwevt)
1559{
1560 struct mpi3_event_data_sas_topology_change_list *event_data =
1561 (struct mpi3_event_data_sas_topology_change_list *)fwevt->event_data;
1562 int i;
1563 u16 handle;
1564 u8 reason_code;
1565 u64 exp_sas_address = 0, parent_sas_address = 0;
1566 struct mpi3mr_hba_port *hba_port = NULL;
1567 struct mpi3mr_tgt_dev *tgtdev = NULL;
1568 struct mpi3mr_sas_node *sas_expander = NULL;
1569 unsigned long flags;
1570 u8 link_rate, prev_link_rate, parent_phy_number;
1571
1572 mpi3mr_sastopochg_evt_debug(mrioc, event_data);
1573 if (mrioc->sas_transport_enabled) {
1574 hba_port = mpi3mr_get_hba_port_by_id(mrioc,
1575 event_data->io_unit_port);
1576 if (le16_to_cpu(event_data->expander_dev_handle)) {
1577 spin_lock_irqsave(&mrioc->sas_node_lock, flags);
1578 sas_expander = __mpi3mr_expander_find_by_handle(mrioc,
1579 le16_to_cpu(event_data->expander_dev_handle));
1580 if (sas_expander) {
1581 exp_sas_address = sas_expander->sas_address;
1582 hba_port = sas_expander->hba_port;
1583 }
1584 spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
1585 parent_sas_address = exp_sas_address;
1586 } else
1587 parent_sas_address = mrioc->sas_hba.sas_address;
1588 }
1589
1590 for (i = 0; i < event_data->num_entries; i++) {
1591 if (fwevt->discard)
1592 return;
1593 handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle);
1594 if (!handle)
1595 continue;
1596 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
1597 if (!tgtdev)
1598 continue;
1599
1600 reason_code = event_data->phy_entry[i].status &
1601 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
1602
1603 switch (reason_code) {
1604 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
1605 if (tgtdev->host_exposed)
1606 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1607 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
1608 mpi3mr_tgtdev_put(tgtdev);
1609 break;
1610 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
1611 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
1612 case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE:
1613 {
1614 if (!mrioc->sas_transport_enabled || tgtdev->non_stl
1615 || tgtdev->is_hidden)
1616 break;
1617 link_rate = event_data->phy_entry[i].link_rate >> 4;
1618 prev_link_rate = event_data->phy_entry[i].link_rate & 0xF;
1619 if (link_rate == prev_link_rate)
1620 break;
1621 if (!parent_sas_address)
1622 break;
1623 parent_phy_number = event_data->start_phy_num + i;
1624 mpi3mr_update_links(mrioc, parent_sas_address, handle,
1625 parent_phy_number, link_rate, hba_port);
1626 break;
1627 }
1628 default:
1629 break;
1630 }
1631 if (tgtdev)
1632 mpi3mr_tgtdev_put(tgtdev);
1633 }
1634
1635 if (mrioc->sas_transport_enabled && (event_data->exp_status ==
1636 MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING)) {
1637 if (sas_expander)
1638 mpi3mr_expander_remove(mrioc, exp_sas_address,
1639 hba_port);
1640 }
1641}
1642
1643/**
1644 * mpi3mr_pcietopochg_evt_debug - PCIeTopoChange details
1645 * @mrioc: Adapter instance reference
1646 * @event_data: PCIe topology change list event data
1647 *
1648 * Prints information about the PCIe topology change event.
1649 *
1650 * Return: Nothing.
1651 */
1652static void
1653mpi3mr_pcietopochg_evt_debug(struct mpi3mr_ioc *mrioc,
1654 struct mpi3_event_data_pcie_topology_change_list *event_data)
1655{
1656 int i;
1657 u16 handle;
1658 u16 reason_code;
1659 u8 port_number;
1660 char *status_str = NULL;
1661 u8 link_rate, prev_link_rate;
1662
1663 switch (event_data->switch_status) {
1664 case MPI3_EVENT_PCIE_TOPO_SS_NOT_RESPONDING:
1665 status_str = "remove";
1666 break;
1667 case MPI3_EVENT_PCIE_TOPO_SS_RESPONDING:
1668 status_str = "responding";
1669 break;
1670 case MPI3_EVENT_PCIE_TOPO_SS_DELAY_NOT_RESPONDING:
1671 status_str = "remove delay";
1672 break;
1673 case MPI3_EVENT_PCIE_TOPO_SS_NO_PCIE_SWITCH:
1674 status_str = "direct attached";
1675 break;
1676 default:
1677 status_str = "unknown status";
1678 break;
1679 }
1680 ioc_info(mrioc, "%s :pcie topology change: (%s)\n",
1681 __func__, status_str);
1682 ioc_info(mrioc,
1683 "%s :\tswitch_handle(0x%04x), enclosure_handle(0x%04x) start_port(%02d), num_entries(%d)\n",
1684 __func__, le16_to_cpu(event_data->switch_dev_handle),
1685 le16_to_cpu(event_data->enclosure_handle),
1686 event_data->start_port_num, event_data->num_entries);
1687 for (i = 0; i < event_data->num_entries; i++) {
1688 handle =
1689 le16_to_cpu(event_data->port_entry[i].attached_dev_handle);
1690 if (!handle)
1691 continue;
1692 port_number = event_data->start_port_num + i;
1693 reason_code = event_data->port_entry[i].port_status;
1694 switch (reason_code) {
1695 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
1696 status_str = "target remove";
1697 break;
1698 case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING:
1699 status_str = "delay target remove";
1700 break;
1701 case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED:
1702 status_str = "link status change";
1703 break;
1704 case MPI3_EVENT_PCIE_TOPO_PS_NO_CHANGE:
1705 status_str = "link status no change";
1706 break;
1707 case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING:
1708 status_str = "target responding";
1709 break;
1710 default:
1711 status_str = "unknown";
1712 break;
1713 }
1714 link_rate = event_data->port_entry[i].current_port_info &
1715 MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK;
1716 prev_link_rate = event_data->port_entry[i].previous_port_info &
1717 MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK;
1718 ioc_info(mrioc,
1719 "%s :\tport(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n",
1720 __func__, port_number, handle, status_str, link_rate,
1721 prev_link_rate);
1722 }
1723}
1724
1725/**
1726 * mpi3mr_pcietopochg_evt_bh - PCIeTopologyChange evt bottomhalf
1727 * @mrioc: Adapter instance reference
1728 * @fwevt: Firmware event reference
1729 *
1730 * Prints information about the PCIe topology change event and
1731 * for "not responding" event code, removes the device from the
1732 * upper layers.
1733 *
1734 * Return: Nothing.
1735 */
1736static void mpi3mr_pcietopochg_evt_bh(struct mpi3mr_ioc *mrioc,
1737 struct mpi3mr_fwevt *fwevt)
1738{
1739 struct mpi3_event_data_pcie_topology_change_list *event_data =
1740 (struct mpi3_event_data_pcie_topology_change_list *)fwevt->event_data;
1741 int i;
1742 u16 handle;
1743 u8 reason_code;
1744 struct mpi3mr_tgt_dev *tgtdev = NULL;
1745
1746 mpi3mr_pcietopochg_evt_debug(mrioc, event_data);
1747
1748 for (i = 0; i < event_data->num_entries; i++) {
1749 if (fwevt->discard)
1750 return;
1751 handle =
1752 le16_to_cpu(event_data->port_entry[i].attached_dev_handle);
1753 if (!handle)
1754 continue;
1755 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
1756 if (!tgtdev)
1757 continue;
1758
1759 reason_code = event_data->port_entry[i].port_status;
1760
1761 switch (reason_code) {
1762 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
1763 if (tgtdev->host_exposed)
1764 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1765 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
1766 mpi3mr_tgtdev_put(tgtdev);
1767 break;
1768 default:
1769 break;
1770 }
1771 if (tgtdev)
1772 mpi3mr_tgtdev_put(tgtdev);
1773 }
1774}
1775
1776/**
1777 * mpi3mr_logdata_evt_bh - Log data event bottomhalf
1778 * @mrioc: Adapter instance reference
1779 * @fwevt: Firmware event reference
1780 *
1781 * Extracts the event data and calls application interfacing
1782 * function to process the event further.
1783 *
1784 * Return: Nothing.
1785 */
1786static void mpi3mr_logdata_evt_bh(struct mpi3mr_ioc *mrioc,
1787 struct mpi3mr_fwevt *fwevt)
1788{
1789 mpi3mr_app_save_logdata(mrioc, fwevt->event_data,
1790 fwevt->event_data_size);
1791}
1792
1793/**
1794 * mpi3mr_update_sdev_qd - Update SCSI device queue depath
1795 * @sdev: SCSI device reference
1796 * @data: Queue depth reference
1797 *
1798 * This is an iterator function called for each SCSI device in a
1799 * target to update the QD of each SCSI device.
1800 *
1801 * Return: Nothing.
1802 */
1803static void mpi3mr_update_sdev_qd(struct scsi_device *sdev, void *data)
1804{
1805 u16 *q_depth = (u16 *)data;
1806
1807 scsi_change_queue_depth(sdev, (int)*q_depth);
1808 sdev->max_queue_depth = sdev->queue_depth;
1809}
1810
1811/**
1812 * mpi3mr_set_qd_for_all_vd_in_tg -set QD for TG VDs
1813 * @mrioc: Adapter instance reference
1814 * @tg: Throttle group information pointer
1815 *
1816 * Accessor to reduce QD for each device associated with the
1817 * given throttle group.
1818 *
1819 * Return: None.
1820 */
1821static void mpi3mr_set_qd_for_all_vd_in_tg(struct mpi3mr_ioc *mrioc,
1822 struct mpi3mr_throttle_group_info *tg)
1823{
1824 unsigned long flags;
1825 struct mpi3mr_tgt_dev *tgtdev;
1826 struct mpi3mr_stgt_priv_data *tgt_priv;
1827
1828
1829 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
1830 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
1831 if (tgtdev->starget && tgtdev->starget->hostdata) {
1832 tgt_priv = tgtdev->starget->hostdata;
1833 if (tgt_priv->throttle_group == tg) {
1834 dprint_event_bh(mrioc,
1835 "updating qd due to throttling for persist_id(%d) original_qd(%d), reduced_qd (%d)\n",
1836 tgt_priv->perst_id, tgtdev->q_depth,
1837 tg->modified_qd);
1838 starget_for_each_device(tgtdev->starget,
1839 (void *)&tg->modified_qd,
1840 mpi3mr_update_sdev_qd);
1841 }
1842 }
1843 }
1844 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
1845}
1846
1847/**
1848 * mpi3mr_fwevt_bh - Firmware event bottomhalf handler
1849 * @mrioc: Adapter instance reference
1850 * @fwevt: Firmware event reference
1851 *
1852 * Identifies the firmware event and calls corresponding bottomg
1853 * half handler and sends event acknowledgment if required.
1854 *
1855 * Return: Nothing.
1856 */
1857static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
1858 struct mpi3mr_fwevt *fwevt)
1859{
1860 struct mpi3_device_page0 *dev_pg0 = NULL;
1861 u16 perst_id, handle, dev_info;
1862 struct mpi3_device0_sas_sata_format *sasinf = NULL;
1863
1864 mpi3mr_fwevt_del_from_list(mrioc, fwevt);
1865 mrioc->current_event = fwevt;
1866
1867 if (mrioc->stop_drv_processing)
1868 goto out;
1869
1870 if (mrioc->unrecoverable) {
1871 dprint_event_bh(mrioc,
1872 "ignoring event(0x%02x) in bottom half handler due to unrecoverable controller\n",
1873 fwevt->event_id);
1874 goto out;
1875 }
1876
1877 if (!fwevt->process_evt)
1878 goto evt_ack;
1879
1880 switch (fwevt->event_id) {
1881 case MPI3_EVENT_DEVICE_ADDED:
1882 {
1883 dev_pg0 = (struct mpi3_device_page0 *)fwevt->event_data;
1884 perst_id = le16_to_cpu(dev_pg0->persistent_id);
1885 handle = le16_to_cpu(dev_pg0->dev_handle);
1886 if (perst_id != MPI3_DEVICE0_PERSISTENTID_INVALID)
1887 mpi3mr_report_tgtdev_to_host(mrioc, perst_id);
1888 else if (mrioc->sas_transport_enabled &&
1889 (dev_pg0->device_form == MPI3_DEVICE_DEVFORM_SAS_SATA)) {
1890 sasinf = &dev_pg0->device_specific.sas_sata_format;
1891 dev_info = le16_to_cpu(sasinf->device_info);
1892 if (!mrioc->sas_hba.num_phys)
1893 mpi3mr_sas_host_add(mrioc);
1894 else
1895 mpi3mr_sas_host_refresh(mrioc);
1896
1897 if (mpi3mr_is_expander_device(dev_info))
1898 mpi3mr_expander_add(mrioc, handle);
1899 }
1900 break;
1901 }
1902 case MPI3_EVENT_DEVICE_INFO_CHANGED:
1903 {
1904 dev_pg0 = (struct mpi3_device_page0 *)fwevt->event_data;
1905 perst_id = le16_to_cpu(dev_pg0->persistent_id);
1906 if (perst_id != MPI3_DEVICE0_PERSISTENTID_INVALID)
1907 mpi3mr_devinfochg_evt_bh(mrioc, dev_pg0);
1908 break;
1909 }
1910 case MPI3_EVENT_DEVICE_STATUS_CHANGE:
1911 {
1912 mpi3mr_devstatuschg_evt_bh(mrioc, fwevt);
1913 break;
1914 }
1915 case MPI3_EVENT_ENCL_DEVICE_ADDED:
1916 case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE:
1917 {
1918 mpi3mr_encldev_add_chg_evt_bh(mrioc, fwevt);
1919 break;
1920 }
1921
1922 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
1923 {
1924 mpi3mr_sastopochg_evt_bh(mrioc, fwevt);
1925 break;
1926 }
1927 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
1928 {
1929 mpi3mr_pcietopochg_evt_bh(mrioc, fwevt);
1930 break;
1931 }
1932 case MPI3_EVENT_LOG_DATA:
1933 {
1934 mpi3mr_logdata_evt_bh(mrioc, fwevt);
1935 break;
1936 }
1937 case MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION:
1938 {
1939 struct mpi3mr_throttle_group_info *tg;
1940
1941 tg = *(struct mpi3mr_throttle_group_info **)fwevt->event_data;
1942 dprint_event_bh(mrioc,
1943 "qd reduction event processed for tg_id(%d) reduction_needed(%d)\n",
1944 tg->id, tg->need_qd_reduction);
1945 if (tg->need_qd_reduction) {
1946 mpi3mr_set_qd_for_all_vd_in_tg(mrioc, tg);
1947 tg->need_qd_reduction = 0;
1948 }
1949 break;
1950 }
1951 case MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH:
1952 {
1953 while (mrioc->device_refresh_on)
1954 msleep(500);
1955
1956 dprint_event_bh(mrioc,
1957 "scan for non responding and newly added devices after soft reset started\n");
1958 if (mrioc->sas_transport_enabled) {
1959 mpi3mr_refresh_sas_ports(mrioc);
1960 mpi3mr_refresh_expanders(mrioc);
1961 }
1962 mpi3mr_rfresh_tgtdevs(mrioc);
1963 ioc_info(mrioc,
1964 "scan for non responding and newly added devices after soft reset completed\n");
1965 break;
1966 }
1967 default:
1968 break;
1969 }
1970
1971evt_ack:
1972 if (fwevt->send_ack)
1973 mpi3mr_process_event_ack(mrioc, fwevt->event_id,
1974 fwevt->evt_ctx);
1975out:
1976 /* Put fwevt reference count to neutralize kref_init increment */
1977 mpi3mr_fwevt_put(fwevt);
1978 mrioc->current_event = NULL;
1979}
1980
1981/**
1982 * mpi3mr_fwevt_worker - Firmware event worker
1983 * @work: Work struct containing firmware event
1984 *
1985 * Extracts the firmware event and calls mpi3mr_fwevt_bh.
1986 *
1987 * Return: Nothing.
1988 */
1989static void mpi3mr_fwevt_worker(struct work_struct *work)
1990{
1991 struct mpi3mr_fwevt *fwevt = container_of(work, struct mpi3mr_fwevt,
1992 work);
1993 mpi3mr_fwevt_bh(fwevt->mrioc, fwevt);
1994 /*
1995 * Put fwevt reference count after
1996 * dequeuing it from worker queue
1997 */
1998 mpi3mr_fwevt_put(fwevt);
1999}
2000
2001/**
2002 * mpi3mr_create_tgtdev - Create and add a target device
2003 * @mrioc: Adapter instance reference
2004 * @dev_pg0: Device Page 0 data
2005 *
2006 * If the device specified by the device page 0 data is not
2007 * present in the driver's internal list, allocate the memory
2008 * for the device, populate the data and add to the list, else
2009 * update the device data. The key is persistent ID.
2010 *
2011 * Return: 0 on success, -ENOMEM on memory allocation failure
2012 */
2013static int mpi3mr_create_tgtdev(struct mpi3mr_ioc *mrioc,
2014 struct mpi3_device_page0 *dev_pg0)
2015{
2016 int retval = 0;
2017 struct mpi3mr_tgt_dev *tgtdev = NULL;
2018 u16 perst_id = 0;
2019
2020 perst_id = le16_to_cpu(dev_pg0->persistent_id);
2021 if (perst_id == MPI3_DEVICE0_PERSISTENTID_INVALID)
2022 return retval;
2023
2024 tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
2025 if (tgtdev) {
2026 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, true);
2027 mpi3mr_tgtdev_put(tgtdev);
2028 } else {
2029 tgtdev = mpi3mr_alloc_tgtdev();
2030 if (!tgtdev)
2031 return -ENOMEM;
2032 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, true);
2033 mpi3mr_tgtdev_add_to_list(mrioc, tgtdev);
2034 }
2035
2036 return retval;
2037}
2038
2039/**
2040 * mpi3mr_flush_delayed_cmd_lists - Flush pending commands
2041 * @mrioc: Adapter instance reference
2042 *
2043 * Flush pending commands in the delayed lists due to a
2044 * controller reset or driver removal as a cleanup.
2045 *
2046 * Return: Nothing
2047 */
2048void mpi3mr_flush_delayed_cmd_lists(struct mpi3mr_ioc *mrioc)
2049{
2050 struct delayed_dev_rmhs_node *_rmhs_node;
2051 struct delayed_evt_ack_node *_evtack_node;
2052
2053 dprint_reset(mrioc, "flushing delayed dev_remove_hs commands\n");
2054 while (!list_empty(&mrioc->delayed_rmhs_list)) {
2055 _rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
2056 struct delayed_dev_rmhs_node, list);
2057 list_del(&_rmhs_node->list);
2058 kfree(_rmhs_node);
2059 }
2060 dprint_reset(mrioc, "flushing delayed event ack commands\n");
2061 while (!list_empty(&mrioc->delayed_evtack_cmds_list)) {
2062 _evtack_node = list_entry(mrioc->delayed_evtack_cmds_list.next,
2063 struct delayed_evt_ack_node, list);
2064 list_del(&_evtack_node->list);
2065 kfree(_evtack_node);
2066 }
2067}
2068
2069/**
2070 * mpi3mr_dev_rmhs_complete_iou - Device removal IOUC completion
2071 * @mrioc: Adapter instance reference
2072 * @drv_cmd: Internal command tracker
2073 *
2074 * Issues a target reset TM to the firmware from the device
2075 * removal TM pend list or retry the removal handshake sequence
2076 * based on the IOU control request IOC status.
2077 *
2078 * Return: Nothing
2079 */
2080static void mpi3mr_dev_rmhs_complete_iou(struct mpi3mr_ioc *mrioc,
2081 struct mpi3mr_drv_cmd *drv_cmd)
2082{
2083 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
2084 struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL;
2085
2086 if (drv_cmd->state & MPI3MR_CMD_RESET)
2087 goto clear_drv_cmd;
2088
2089 ioc_info(mrioc,
2090 "%s :dev_rmhs_iouctrl_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x)\n",
2091 __func__, drv_cmd->dev_handle, drv_cmd->ioc_status,
2092 drv_cmd->ioc_loginfo);
2093 if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
2094 if (drv_cmd->retry_count < MPI3MR_DEV_RMHS_RETRY_COUNT) {
2095 drv_cmd->retry_count++;
2096 ioc_info(mrioc,
2097 "%s :dev_rmhs_iouctrl_complete: handle(0x%04x)retrying handshake retry=%d\n",
2098 __func__, drv_cmd->dev_handle,
2099 drv_cmd->retry_count);
2100 mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle,
2101 drv_cmd, drv_cmd->iou_rc);
2102 return;
2103 }
2104 ioc_err(mrioc,
2105 "%s :dev removal handshake failed after all retries: handle(0x%04x)\n",
2106 __func__, drv_cmd->dev_handle);
2107 } else {
2108 ioc_info(mrioc,
2109 "%s :dev removal handshake completed successfully: handle(0x%04x)\n",
2110 __func__, drv_cmd->dev_handle);
2111 clear_bit(drv_cmd->dev_handle, mrioc->removepend_bitmap);
2112 }
2113
2114 if (!list_empty(&mrioc->delayed_rmhs_list)) {
2115 delayed_dev_rmhs = list_entry(mrioc->delayed_rmhs_list.next,
2116 struct delayed_dev_rmhs_node, list);
2117 drv_cmd->dev_handle = delayed_dev_rmhs->handle;
2118 drv_cmd->retry_count = 0;
2119 drv_cmd->iou_rc = delayed_dev_rmhs->iou_rc;
2120 ioc_info(mrioc,
2121 "%s :dev_rmhs_iouctrl_complete: processing delayed TM: handle(0x%04x)\n",
2122 __func__, drv_cmd->dev_handle);
2123 mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle, drv_cmd,
2124 drv_cmd->iou_rc);
2125 list_del(&delayed_dev_rmhs->list);
2126 kfree(delayed_dev_rmhs);
2127 return;
2128 }
2129
2130clear_drv_cmd:
2131 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2132 drv_cmd->callback = NULL;
2133 drv_cmd->retry_count = 0;
2134 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
2135 clear_bit(cmd_idx, mrioc->devrem_bitmap);
2136}
2137
2138/**
2139 * mpi3mr_dev_rmhs_complete_tm - Device removal TM completion
2140 * @mrioc: Adapter instance reference
2141 * @drv_cmd: Internal command tracker
2142 *
2143 * Issues a target reset TM to the firmware from the device
2144 * removal TM pend list or issue IO unit control request as
2145 * part of device removal or hidden acknowledgment handshake.
2146 *
2147 * Return: Nothing
2148 */
2149static void mpi3mr_dev_rmhs_complete_tm(struct mpi3mr_ioc *mrioc,
2150 struct mpi3mr_drv_cmd *drv_cmd)
2151{
2152 struct mpi3_iounit_control_request iou_ctrl;
2153 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
2154 struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL;
2155 int retval;
2156
2157 if (drv_cmd->state & MPI3MR_CMD_RESET)
2158 goto clear_drv_cmd;
2159
2160 if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID)
2161 tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
2162
2163 if (tm_reply)
2164 pr_info(IOCNAME
2165 "dev_rmhs_tr_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x), term_count(%d)\n",
2166 mrioc->name, drv_cmd->dev_handle, drv_cmd->ioc_status,
2167 drv_cmd->ioc_loginfo,
2168 le32_to_cpu(tm_reply->termination_count));
2169
2170 pr_info(IOCNAME "Issuing IOU CTL: handle(0x%04x) dev_rmhs idx(%d)\n",
2171 mrioc->name, drv_cmd->dev_handle, cmd_idx);
2172
2173 memset(&iou_ctrl, 0, sizeof(iou_ctrl));
2174
2175 drv_cmd->state = MPI3MR_CMD_PENDING;
2176 drv_cmd->is_waiting = 0;
2177 drv_cmd->callback = mpi3mr_dev_rmhs_complete_iou;
2178 iou_ctrl.operation = drv_cmd->iou_rc;
2179 iou_ctrl.param16[0] = cpu_to_le16(drv_cmd->dev_handle);
2180 iou_ctrl.host_tag = cpu_to_le16(drv_cmd->host_tag);
2181 iou_ctrl.function = MPI3_FUNCTION_IO_UNIT_CONTROL;
2182
2183 retval = mpi3mr_admin_request_post(mrioc, &iou_ctrl, sizeof(iou_ctrl),
2184 1);
2185 if (retval) {
2186 pr_err(IOCNAME "Issue DevRmHsTMIOUCTL: Admin post failed\n",
2187 mrioc->name);
2188 goto clear_drv_cmd;
2189 }
2190
2191 return;
2192clear_drv_cmd:
2193 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2194 drv_cmd->callback = NULL;
2195 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
2196 drv_cmd->retry_count = 0;
2197 clear_bit(cmd_idx, mrioc->devrem_bitmap);
2198}
2199
2200/**
2201 * mpi3mr_dev_rmhs_send_tm - Issue TM for device removal
2202 * @mrioc: Adapter instance reference
2203 * @handle: Device handle
2204 * @cmdparam: Internal command tracker
2205 * @iou_rc: IO unit reason code
2206 *
2207 * Issues a target reset TM to the firmware or add it to a pend
2208 * list as part of device removal or hidden acknowledgment
2209 * handshake.
2210 *
2211 * Return: Nothing
2212 */
2213static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
2214 struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc)
2215{
2216 struct mpi3_scsi_task_mgmt_request tm_req;
2217 int retval = 0;
2218 u16 cmd_idx = MPI3MR_NUM_DEVRMCMD;
2219 u8 retrycount = 5;
2220 struct mpi3mr_drv_cmd *drv_cmd = cmdparam;
2221 struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL;
2222
2223 if (drv_cmd)
2224 goto issue_cmd;
2225 do {
2226 cmd_idx = find_first_zero_bit(mrioc->devrem_bitmap,
2227 MPI3MR_NUM_DEVRMCMD);
2228 if (cmd_idx < MPI3MR_NUM_DEVRMCMD) {
2229 if (!test_and_set_bit(cmd_idx, mrioc->devrem_bitmap))
2230 break;
2231 cmd_idx = MPI3MR_NUM_DEVRMCMD;
2232 }
2233 } while (retrycount--);
2234
2235 if (cmd_idx >= MPI3MR_NUM_DEVRMCMD) {
2236 delayed_dev_rmhs = kzalloc(sizeof(*delayed_dev_rmhs),
2237 GFP_ATOMIC);
2238 if (!delayed_dev_rmhs)
2239 return;
2240 INIT_LIST_HEAD(&delayed_dev_rmhs->list);
2241 delayed_dev_rmhs->handle = handle;
2242 delayed_dev_rmhs->iou_rc = iou_rc;
2243 list_add_tail(&delayed_dev_rmhs->list,
2244 &mrioc->delayed_rmhs_list);
2245 ioc_info(mrioc, "%s :DevRmHs: tr:handle(0x%04x) is postponed\n",
2246 __func__, handle);
2247 return;
2248 }
2249 drv_cmd = &mrioc->dev_rmhs_cmds[cmd_idx];
2250
2251issue_cmd:
2252 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
2253 ioc_info(mrioc,
2254 "%s :Issuing TR TM: for devhandle 0x%04x with dev_rmhs %d\n",
2255 __func__, handle, cmd_idx);
2256
2257 memset(&tm_req, 0, sizeof(tm_req));
2258 if (drv_cmd->state & MPI3MR_CMD_PENDING) {
2259 ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__);
2260 goto out;
2261 }
2262 drv_cmd->state = MPI3MR_CMD_PENDING;
2263 drv_cmd->is_waiting = 0;
2264 drv_cmd->callback = mpi3mr_dev_rmhs_complete_tm;
2265 drv_cmd->dev_handle = handle;
2266 drv_cmd->iou_rc = iou_rc;
2267 tm_req.dev_handle = cpu_to_le16(handle);
2268 tm_req.task_type = MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
2269 tm_req.host_tag = cpu_to_le16(drv_cmd->host_tag);
2270 tm_req.task_host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INVALID);
2271 tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT;
2272
2273 set_bit(handle, mrioc->removepend_bitmap);
2274 retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1);
2275 if (retval) {
2276 ioc_err(mrioc, "%s :Issue DevRmHsTM: Admin Post failed\n",
2277 __func__);
2278 goto out_failed;
2279 }
2280out:
2281 return;
2282out_failed:
2283 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2284 drv_cmd->callback = NULL;
2285 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
2286 drv_cmd->retry_count = 0;
2287 clear_bit(cmd_idx, mrioc->devrem_bitmap);
2288}
2289
2290/**
2291 * mpi3mr_complete_evt_ack - event ack request completion
2292 * @mrioc: Adapter instance reference
2293 * @drv_cmd: Internal command tracker
2294 *
2295 * This is the completion handler for non blocking event
2296 * acknowledgment sent to the firmware and this will issue any
2297 * pending event acknowledgment request.
2298 *
2299 * Return: Nothing
2300 */
2301static void mpi3mr_complete_evt_ack(struct mpi3mr_ioc *mrioc,
2302 struct mpi3mr_drv_cmd *drv_cmd)
2303{
2304 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_EVTACKCMD_MIN;
2305 struct delayed_evt_ack_node *delayed_evtack = NULL;
2306
2307 if (drv_cmd->state & MPI3MR_CMD_RESET)
2308 goto clear_drv_cmd;
2309
2310 if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
2311 dprint_event_th(mrioc,
2312 "immediate event ack failed with ioc_status(0x%04x) log_info(0x%08x)\n",
2313 (drv_cmd->ioc_status & MPI3_IOCSTATUS_STATUS_MASK),
2314 drv_cmd->ioc_loginfo);
2315 }
2316
2317 if (!list_empty(&mrioc->delayed_evtack_cmds_list)) {
2318 delayed_evtack =
2319 list_entry(mrioc->delayed_evtack_cmds_list.next,
2320 struct delayed_evt_ack_node, list);
2321 mpi3mr_send_event_ack(mrioc, delayed_evtack->event, drv_cmd,
2322 delayed_evtack->event_ctx);
2323 list_del(&delayed_evtack->list);
2324 kfree(delayed_evtack);
2325 return;
2326 }
2327clear_drv_cmd:
2328 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2329 drv_cmd->callback = NULL;
2330 clear_bit(cmd_idx, mrioc->evtack_cmds_bitmap);
2331}
2332
2333/**
2334 * mpi3mr_send_event_ack - Issue event acknwoledgment request
2335 * @mrioc: Adapter instance reference
2336 * @event: MPI3 event id
2337 * @cmdparam: Internal command tracker
2338 * @event_ctx: event context
2339 *
2340 * Issues event acknowledgment request to the firmware if there
2341 * is a free command to send the event ack else it to a pend
2342 * list so that it will be processed on a completion of a prior
2343 * event acknowledgment .
2344 *
2345 * Return: Nothing
2346 */
2347static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event,
2348 struct mpi3mr_drv_cmd *cmdparam, u32 event_ctx)
2349{
2350 struct mpi3_event_ack_request evtack_req;
2351 int retval = 0;
2352 u8 retrycount = 5;
2353 u16 cmd_idx = MPI3MR_NUM_EVTACKCMD;
2354 struct mpi3mr_drv_cmd *drv_cmd = cmdparam;
2355 struct delayed_evt_ack_node *delayed_evtack = NULL;
2356
2357 if (drv_cmd) {
2358 dprint_event_th(mrioc,
2359 "sending delayed event ack in the top half for event(0x%02x), event_ctx(0x%08x)\n",
2360 event, event_ctx);
2361 goto issue_cmd;
2362 }
2363 dprint_event_th(mrioc,
2364 "sending event ack in the top half for event(0x%02x), event_ctx(0x%08x)\n",
2365 event, event_ctx);
2366 do {
2367 cmd_idx = find_first_zero_bit(mrioc->evtack_cmds_bitmap,
2368 MPI3MR_NUM_EVTACKCMD);
2369 if (cmd_idx < MPI3MR_NUM_EVTACKCMD) {
2370 if (!test_and_set_bit(cmd_idx,
2371 mrioc->evtack_cmds_bitmap))
2372 break;
2373 cmd_idx = MPI3MR_NUM_EVTACKCMD;
2374 }
2375 } while (retrycount--);
2376
2377 if (cmd_idx >= MPI3MR_NUM_EVTACKCMD) {
2378 delayed_evtack = kzalloc(sizeof(*delayed_evtack),
2379 GFP_ATOMIC);
2380 if (!delayed_evtack)
2381 return;
2382 INIT_LIST_HEAD(&delayed_evtack->list);
2383 delayed_evtack->event = event;
2384 delayed_evtack->event_ctx = event_ctx;
2385 list_add_tail(&delayed_evtack->list,
2386 &mrioc->delayed_evtack_cmds_list);
2387 dprint_event_th(mrioc,
2388 "event ack in the top half for event(0x%02x), event_ctx(0x%08x) is postponed\n",
2389 event, event_ctx);
2390 return;
2391 }
2392 drv_cmd = &mrioc->evtack_cmds[cmd_idx];
2393
2394issue_cmd:
2395 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_EVTACKCMD_MIN;
2396
2397 memset(&evtack_req, 0, sizeof(evtack_req));
2398 if (drv_cmd->state & MPI3MR_CMD_PENDING) {
2399 dprint_event_th(mrioc,
2400 "sending event ack failed due to command in use\n");
2401 goto out;
2402 }
2403 drv_cmd->state = MPI3MR_CMD_PENDING;
2404 drv_cmd->is_waiting = 0;
2405 drv_cmd->callback = mpi3mr_complete_evt_ack;
2406 evtack_req.host_tag = cpu_to_le16(drv_cmd->host_tag);
2407 evtack_req.function = MPI3_FUNCTION_EVENT_ACK;
2408 evtack_req.event = event;
2409 evtack_req.event_context = cpu_to_le32(event_ctx);
2410 retval = mpi3mr_admin_request_post(mrioc, &evtack_req,
2411 sizeof(evtack_req), 1);
2412 if (retval) {
2413 dprint_event_th(mrioc,
2414 "posting event ack request is failed\n");
2415 goto out_failed;
2416 }
2417
2418 dprint_event_th(mrioc,
2419 "event ack in the top half for event(0x%02x), event_ctx(0x%08x) is posted\n",
2420 event, event_ctx);
2421out:
2422 return;
2423out_failed:
2424 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2425 drv_cmd->callback = NULL;
2426 clear_bit(cmd_idx, mrioc->evtack_cmds_bitmap);
2427}
2428
2429/**
2430 * mpi3mr_pcietopochg_evt_th - PCIETopologyChange evt tophalf
2431 * @mrioc: Adapter instance reference
2432 * @event_reply: event data
2433 *
2434 * Checks for the reason code and based on that either block I/O
2435 * to device, or unblock I/O to the device, or start the device
2436 * removal handshake with reason as remove with the firmware for
2437 * PCIe devices.
2438 *
2439 * Return: Nothing
2440 */
2441static void mpi3mr_pcietopochg_evt_th(struct mpi3mr_ioc *mrioc,
2442 struct mpi3_event_notification_reply *event_reply)
2443{
2444 struct mpi3_event_data_pcie_topology_change_list *topo_evt =
2445 (struct mpi3_event_data_pcie_topology_change_list *)event_reply->event_data;
2446 int i;
2447 u16 handle;
2448 u8 reason_code;
2449 struct mpi3mr_tgt_dev *tgtdev = NULL;
2450 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
2451
2452 for (i = 0; i < topo_evt->num_entries; i++) {
2453 handle = le16_to_cpu(topo_evt->port_entry[i].attached_dev_handle);
2454 if (!handle)
2455 continue;
2456 reason_code = topo_evt->port_entry[i].port_status;
2457 scsi_tgt_priv_data = NULL;
2458 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
2459 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
2460 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
2461 tgtdev->starget->hostdata;
2462 switch (reason_code) {
2463 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
2464 if (scsi_tgt_priv_data) {
2465 scsi_tgt_priv_data->dev_removed = 1;
2466 scsi_tgt_priv_data->dev_removedelay = 0;
2467 atomic_set(&scsi_tgt_priv_data->block_io, 0);
2468 }
2469 mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL,
2470 MPI3_CTRL_OP_REMOVE_DEVICE);
2471 break;
2472 case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING:
2473 if (scsi_tgt_priv_data) {
2474 scsi_tgt_priv_data->dev_removedelay = 1;
2475 atomic_inc(&scsi_tgt_priv_data->block_io);
2476 }
2477 break;
2478 case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING:
2479 if (scsi_tgt_priv_data &&
2480 scsi_tgt_priv_data->dev_removedelay) {
2481 scsi_tgt_priv_data->dev_removedelay = 0;
2482 atomic_dec_if_positive
2483 (&scsi_tgt_priv_data->block_io);
2484 }
2485 break;
2486 case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED:
2487 default:
2488 break;
2489 }
2490 if (tgtdev)
2491 mpi3mr_tgtdev_put(tgtdev);
2492 }
2493}
2494
2495/**
2496 * mpi3mr_sastopochg_evt_th - SASTopologyChange evt tophalf
2497 * @mrioc: Adapter instance reference
2498 * @event_reply: event data
2499 *
2500 * Checks for the reason code and based on that either block I/O
2501 * to device, or unblock I/O to the device, or start the device
2502 * removal handshake with reason as remove with the firmware for
2503 * SAS/SATA devices.
2504 *
2505 * Return: Nothing
2506 */
2507static void mpi3mr_sastopochg_evt_th(struct mpi3mr_ioc *mrioc,
2508 struct mpi3_event_notification_reply *event_reply)
2509{
2510 struct mpi3_event_data_sas_topology_change_list *topo_evt =
2511 (struct mpi3_event_data_sas_topology_change_list *)event_reply->event_data;
2512 int i;
2513 u16 handle;
2514 u8 reason_code;
2515 struct mpi3mr_tgt_dev *tgtdev = NULL;
2516 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
2517
2518 for (i = 0; i < topo_evt->num_entries; i++) {
2519 handle = le16_to_cpu(topo_evt->phy_entry[i].attached_dev_handle);
2520 if (!handle)
2521 continue;
2522 reason_code = topo_evt->phy_entry[i].status &
2523 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
2524 scsi_tgt_priv_data = NULL;
2525 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
2526 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
2527 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
2528 tgtdev->starget->hostdata;
2529 switch (reason_code) {
2530 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
2531 if (scsi_tgt_priv_data) {
2532 scsi_tgt_priv_data->dev_removed = 1;
2533 scsi_tgt_priv_data->dev_removedelay = 0;
2534 atomic_set(&scsi_tgt_priv_data->block_io, 0);
2535 }
2536 mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL,
2537 MPI3_CTRL_OP_REMOVE_DEVICE);
2538 break;
2539 case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING:
2540 if (scsi_tgt_priv_data) {
2541 scsi_tgt_priv_data->dev_removedelay = 1;
2542 atomic_inc(&scsi_tgt_priv_data->block_io);
2543 }
2544 break;
2545 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
2546 if (scsi_tgt_priv_data &&
2547 scsi_tgt_priv_data->dev_removedelay) {
2548 scsi_tgt_priv_data->dev_removedelay = 0;
2549 atomic_dec_if_positive
2550 (&scsi_tgt_priv_data->block_io);
2551 }
2552 break;
2553 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
2554 default:
2555 break;
2556 }
2557 if (tgtdev)
2558 mpi3mr_tgtdev_put(tgtdev);
2559 }
2560}
2561
2562/**
2563 * mpi3mr_devstatuschg_evt_th - DeviceStatusChange evt tophalf
2564 * @mrioc: Adapter instance reference
2565 * @event_reply: event data
2566 *
2567 * Checks for the reason code and based on that either block I/O
2568 * to device, or unblock I/O to the device, or start the device
2569 * removal handshake with reason as remove/hide acknowledgment
2570 * with the firmware.
2571 *
2572 * Return: Nothing
2573 */
2574static void mpi3mr_devstatuschg_evt_th(struct mpi3mr_ioc *mrioc,
2575 struct mpi3_event_notification_reply *event_reply)
2576{
2577 u16 dev_handle = 0;
2578 u8 ublock = 0, block = 0, hide = 0, delete = 0, remove = 0;
2579 struct mpi3mr_tgt_dev *tgtdev = NULL;
2580 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
2581 struct mpi3_event_data_device_status_change *evtdata =
2582 (struct mpi3_event_data_device_status_change *)event_reply->event_data;
2583
2584 if (mrioc->stop_drv_processing)
2585 goto out;
2586
2587 dev_handle = le16_to_cpu(evtdata->dev_handle);
2588
2589 switch (evtdata->reason_code) {
2590 case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_STRT:
2591 case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_STRT:
2592 block = 1;
2593 break;
2594 case MPI3_EVENT_DEV_STAT_RC_HIDDEN:
2595 delete = 1;
2596 hide = 1;
2597 break;
2598 case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING:
2599 delete = 1;
2600 remove = 1;
2601 break;
2602 case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_CMP:
2603 case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_CMP:
2604 ublock = 1;
2605 break;
2606 default:
2607 break;
2608 }
2609
2610 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
2611 if (!tgtdev)
2612 goto out;
2613 if (hide)
2614 tgtdev->is_hidden = hide;
2615 if (tgtdev->starget && tgtdev->starget->hostdata) {
2616 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
2617 tgtdev->starget->hostdata;
2618 if (block)
2619 atomic_inc(&scsi_tgt_priv_data->block_io);
2620 if (delete)
2621 scsi_tgt_priv_data->dev_removed = 1;
2622 if (ublock)
2623 atomic_dec_if_positive(&scsi_tgt_priv_data->block_io);
2624 }
2625 if (remove)
2626 mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL,
2627 MPI3_CTRL_OP_REMOVE_DEVICE);
2628 if (hide)
2629 mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL,
2630 MPI3_CTRL_OP_HIDDEN_ACK);
2631
2632out:
2633 if (tgtdev)
2634 mpi3mr_tgtdev_put(tgtdev);
2635}
2636
2637/**
2638 * mpi3mr_preparereset_evt_th - Prepare for reset event tophalf
2639 * @mrioc: Adapter instance reference
2640 * @event_reply: event data
2641 *
2642 * Blocks and unblocks host level I/O based on the reason code
2643 *
2644 * Return: Nothing
2645 */
2646static void mpi3mr_preparereset_evt_th(struct mpi3mr_ioc *mrioc,
2647 struct mpi3_event_notification_reply *event_reply)
2648{
2649 struct mpi3_event_data_prepare_for_reset *evtdata =
2650 (struct mpi3_event_data_prepare_for_reset *)event_reply->event_data;
2651
2652 if (evtdata->reason_code == MPI3_EVENT_PREPARE_RESET_RC_START) {
2653 dprint_event_th(mrioc,
2654 "prepare for reset event top half with rc=start\n");
2655 if (mrioc->prepare_for_reset)
2656 return;
2657 mrioc->prepare_for_reset = 1;
2658 mrioc->prepare_for_reset_timeout_counter = 0;
2659 } else if (evtdata->reason_code == MPI3_EVENT_PREPARE_RESET_RC_ABORT) {
2660 dprint_event_th(mrioc,
2661 "prepare for reset top half with rc=abort\n");
2662 mrioc->prepare_for_reset = 0;
2663 mrioc->prepare_for_reset_timeout_counter = 0;
2664 }
2665 if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK)
2666 == MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED)
2667 mpi3mr_send_event_ack(mrioc, event_reply->event, NULL,
2668 le32_to_cpu(event_reply->event_context));
2669}
2670
2671/**
2672 * mpi3mr_energypackchg_evt_th - Energy pack change evt tophalf
2673 * @mrioc: Adapter instance reference
2674 * @event_reply: event data
2675 *
2676 * Identifies the new shutdown timeout value and update.
2677 *
2678 * Return: Nothing
2679 */
2680static void mpi3mr_energypackchg_evt_th(struct mpi3mr_ioc *mrioc,
2681 struct mpi3_event_notification_reply *event_reply)
2682{
2683 struct mpi3_event_data_energy_pack_change *evtdata =
2684 (struct mpi3_event_data_energy_pack_change *)event_reply->event_data;
2685 u16 shutdown_timeout = le16_to_cpu(evtdata->shutdown_timeout);
2686
2687 if (shutdown_timeout <= 0) {
2688 ioc_warn(mrioc,
2689 "%s :Invalid Shutdown Timeout received = %d\n",
2690 __func__, shutdown_timeout);
2691 return;
2692 }
2693
2694 ioc_info(mrioc,
2695 "%s :Previous Shutdown Timeout Value = %d New Shutdown Timeout Value = %d\n",
2696 __func__, mrioc->facts.shutdown_timeout, shutdown_timeout);
2697 mrioc->facts.shutdown_timeout = shutdown_timeout;
2698}
2699
2700/**
2701 * mpi3mr_cablemgmt_evt_th - Cable management event tophalf
2702 * @mrioc: Adapter instance reference
2703 * @event_reply: event data
2704 *
2705 * Displays Cable manegemt event details.
2706 *
2707 * Return: Nothing
2708 */
2709static void mpi3mr_cablemgmt_evt_th(struct mpi3mr_ioc *mrioc,
2710 struct mpi3_event_notification_reply *event_reply)
2711{
2712 struct mpi3_event_data_cable_management *evtdata =
2713 (struct mpi3_event_data_cable_management *)event_reply->event_data;
2714
2715 switch (evtdata->status) {
2716 case MPI3_EVENT_CABLE_MGMT_STATUS_INSUFFICIENT_POWER:
2717 {
2718 ioc_info(mrioc, "An active cable with receptacle_id %d cannot be powered.\n"
2719 "Devices connected to this cable are not detected.\n"
2720 "This cable requires %d mW of power.\n",
2721 evtdata->receptacle_id,
2722 le32_to_cpu(evtdata->active_cable_power_requirement));
2723 break;
2724 }
2725 case MPI3_EVENT_CABLE_MGMT_STATUS_DEGRADED:
2726 {
2727 ioc_info(mrioc, "A cable with receptacle_id %d is not running at optimal speed\n",
2728 evtdata->receptacle_id);
2729 break;
2730 }
2731 default:
2732 break;
2733 }
2734}
2735
2736/**
2737 * mpi3mr_add_event_wait_for_device_refresh - Add Wait for Device Refresh Event
2738 * @mrioc: Adapter instance reference
2739 *
2740 * Add driver specific event to make sure that the driver won't process the
2741 * events until all the devices are refreshed during soft reset.
2742 *
2743 * Return: Nothing
2744 */
2745void mpi3mr_add_event_wait_for_device_refresh(struct mpi3mr_ioc *mrioc)
2746{
2747 struct mpi3mr_fwevt *fwevt = NULL;
2748
2749 fwevt = mpi3mr_alloc_fwevt(0);
2750 if (!fwevt) {
2751 dprint_event_th(mrioc,
2752 "failed to schedule bottom half handler for event(0x%02x)\n",
2753 MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH);
2754 return;
2755 }
2756 fwevt->mrioc = mrioc;
2757 fwevt->event_id = MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH;
2758 fwevt->send_ack = 0;
2759 fwevt->process_evt = 1;
2760 fwevt->evt_ctx = 0;
2761 fwevt->event_data_size = 0;
2762 mpi3mr_fwevt_add_to_list(mrioc, fwevt);
2763}
2764
2765/**
2766 * mpi3mr_os_handle_events - Firmware event handler
2767 * @mrioc: Adapter instance reference
2768 * @event_reply: event data
2769 *
2770 * Identify whteher the event has to handled and acknowledged
2771 * and either process the event in the tophalf and/or schedule a
2772 * bottom half through mpi3mr_fwevt_worker.
2773 *
2774 * Return: Nothing
2775 */
2776void mpi3mr_os_handle_events(struct mpi3mr_ioc *mrioc,
2777 struct mpi3_event_notification_reply *event_reply)
2778{
2779 u16 evt_type, sz;
2780 struct mpi3mr_fwevt *fwevt = NULL;
2781 bool ack_req = 0, process_evt_bh = 0;
2782
2783 if (mrioc->stop_drv_processing)
2784 return;
2785
2786 if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK)
2787 == MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED)
2788 ack_req = 1;
2789
2790 evt_type = event_reply->event;
2791
2792 switch (evt_type) {
2793 case MPI3_EVENT_DEVICE_ADDED:
2794 {
2795 struct mpi3_device_page0 *dev_pg0 =
2796 (struct mpi3_device_page0 *)event_reply->event_data;
2797 if (mpi3mr_create_tgtdev(mrioc, dev_pg0))
2798 ioc_err(mrioc,
2799 "%s :Failed to add device in the device add event\n",
2800 __func__);
2801 else
2802 process_evt_bh = 1;
2803 break;
2804 }
2805 case MPI3_EVENT_DEVICE_STATUS_CHANGE:
2806 {
2807 process_evt_bh = 1;
2808 mpi3mr_devstatuschg_evt_th(mrioc, event_reply);
2809 break;
2810 }
2811 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
2812 {
2813 process_evt_bh = 1;
2814 mpi3mr_sastopochg_evt_th(mrioc, event_reply);
2815 break;
2816 }
2817 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
2818 {
2819 process_evt_bh = 1;
2820 mpi3mr_pcietopochg_evt_th(mrioc, event_reply);
2821 break;
2822 }
2823 case MPI3_EVENT_PREPARE_FOR_RESET:
2824 {
2825 mpi3mr_preparereset_evt_th(mrioc, event_reply);
2826 ack_req = 0;
2827 break;
2828 }
2829 case MPI3_EVENT_DEVICE_INFO_CHANGED:
2830 case MPI3_EVENT_LOG_DATA:
2831 case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE:
2832 case MPI3_EVENT_ENCL_DEVICE_ADDED:
2833 {
2834 process_evt_bh = 1;
2835 break;
2836 }
2837 case MPI3_EVENT_ENERGY_PACK_CHANGE:
2838 {
2839 mpi3mr_energypackchg_evt_th(mrioc, event_reply);
2840 break;
2841 }
2842 case MPI3_EVENT_CABLE_MGMT:
2843 {
2844 mpi3mr_cablemgmt_evt_th(mrioc, event_reply);
2845 break;
2846 }
2847 case MPI3_EVENT_SAS_DISCOVERY:
2848 case MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR:
2849 case MPI3_EVENT_SAS_BROADCAST_PRIMITIVE:
2850 case MPI3_EVENT_PCIE_ENUMERATION:
2851 break;
2852 default:
2853 ioc_info(mrioc, "%s :event 0x%02x is not handled\n",
2854 __func__, evt_type);
2855 break;
2856 }
2857 if (process_evt_bh || ack_req) {
2858 sz = event_reply->event_data_length * 4;
2859 fwevt = mpi3mr_alloc_fwevt(sz);
2860 if (!fwevt) {
2861 ioc_info(mrioc, "%s :failure at %s:%d/%s()!\n",
2862 __func__, __FILE__, __LINE__, __func__);
2863 return;
2864 }
2865
2866 memcpy(fwevt->event_data, event_reply->event_data, sz);
2867 fwevt->mrioc = mrioc;
2868 fwevt->event_id = evt_type;
2869 fwevt->send_ack = ack_req;
2870 fwevt->process_evt = process_evt_bh;
2871 fwevt->evt_ctx = le32_to_cpu(event_reply->event_context);
2872 mpi3mr_fwevt_add_to_list(mrioc, fwevt);
2873 }
2874}
2875
2876/**
2877 * mpi3mr_setup_eedp - Setup EEDP information in MPI3 SCSI IO
2878 * @mrioc: Adapter instance reference
2879 * @scmd: SCSI command reference
2880 * @scsiio_req: MPI3 SCSI IO request
2881 *
2882 * Identifies the protection information flags from the SCSI
2883 * command and set appropriate flags in the MPI3 SCSI IO
2884 * request.
2885 *
2886 * Return: Nothing
2887 */
2888static void mpi3mr_setup_eedp(struct mpi3mr_ioc *mrioc,
2889 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
2890{
2891 u16 eedp_flags = 0;
2892 unsigned char prot_op = scsi_get_prot_op(scmd);
2893
2894 switch (prot_op) {
2895 case SCSI_PROT_NORMAL:
2896 return;
2897 case SCSI_PROT_READ_STRIP:
2898 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE;
2899 break;
2900 case SCSI_PROT_WRITE_INSERT:
2901 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT;
2902 break;
2903 case SCSI_PROT_READ_INSERT:
2904 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT;
2905 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2906 break;
2907 case SCSI_PROT_WRITE_STRIP:
2908 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE;
2909 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2910 break;
2911 case SCSI_PROT_READ_PASS:
2912 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK;
2913 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2914 break;
2915 case SCSI_PROT_WRITE_PASS:
2916 if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM) {
2917 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REGEN;
2918 scsiio_req->sgl[0].eedp.application_tag_translation_mask =
2919 0xffff;
2920 } else
2921 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK;
2922
2923 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2924 break;
2925 default:
2926 return;
2927 }
2928
2929 if (scmd->prot_flags & SCSI_PROT_GUARD_CHECK)
2930 eedp_flags |= MPI3_EEDPFLAGS_CHK_GUARD;
2931
2932 if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM)
2933 eedp_flags |= MPI3_EEDPFLAGS_HOST_GUARD_IP_CHKSUM;
2934
2935 if (scmd->prot_flags & SCSI_PROT_REF_CHECK) {
2936 eedp_flags |= MPI3_EEDPFLAGS_CHK_REF_TAG |
2937 MPI3_EEDPFLAGS_INCR_PRI_REF_TAG;
2938 scsiio_req->cdb.eedp32.primary_reference_tag =
2939 cpu_to_be32(scsi_prot_ref_tag(scmd));
2940 }
2941
2942 if (scmd->prot_flags & SCSI_PROT_REF_INCREMENT)
2943 eedp_flags |= MPI3_EEDPFLAGS_INCR_PRI_REF_TAG;
2944
2945 eedp_flags |= MPI3_EEDPFLAGS_ESC_MODE_APPTAG_DISABLE;
2946
2947 switch (scsi_prot_interval(scmd)) {
2948 case 512:
2949 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_512;
2950 break;
2951 case 520:
2952 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_520;
2953 break;
2954 case 4080:
2955 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4080;
2956 break;
2957 case 4088:
2958 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4088;
2959 break;
2960 case 4096:
2961 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4096;
2962 break;
2963 case 4104:
2964 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4104;
2965 break;
2966 case 4160:
2967 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4160;
2968 break;
2969 default:
2970 break;
2971 }
2972
2973 scsiio_req->sgl[0].eedp.eedp_flags = cpu_to_le16(eedp_flags);
2974 scsiio_req->sgl[0].eedp.flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED;
2975}
2976
2977/**
2978 * mpi3mr_build_sense_buffer - Map sense information
2979 * @desc: Sense type
2980 * @buf: Sense buffer to populate
2981 * @key: Sense key
2982 * @asc: Additional sense code
2983 * @ascq: Additional sense code qualifier
2984 *
2985 * Maps the given sense information into either descriptor or
2986 * fixed format sense data.
2987 *
2988 * Return: Nothing
2989 */
2990static inline void mpi3mr_build_sense_buffer(int desc, u8 *buf, u8 key,
2991 u8 asc, u8 ascq)
2992{
2993 if (desc) {
2994 buf[0] = 0x72; /* descriptor, current */
2995 buf[1] = key;
2996 buf[2] = asc;
2997 buf[3] = ascq;
2998 buf[7] = 0;
2999 } else {
3000 buf[0] = 0x70; /* fixed, current */
3001 buf[2] = key;
3002 buf[7] = 0xa;
3003 buf[12] = asc;
3004 buf[13] = ascq;
3005 }
3006}
3007
3008/**
3009 * mpi3mr_map_eedp_error - Map EEDP errors from IOC status
3010 * @scmd: SCSI command reference
3011 * @ioc_status: status of MPI3 request
3012 *
3013 * Maps the EEDP error status of the SCSI IO request to sense
3014 * data.
3015 *
3016 * Return: Nothing
3017 */
3018static void mpi3mr_map_eedp_error(struct scsi_cmnd *scmd,
3019 u16 ioc_status)
3020{
3021 u8 ascq = 0;
3022
3023 switch (ioc_status) {
3024 case MPI3_IOCSTATUS_EEDP_GUARD_ERROR:
3025 ascq = 0x01;
3026 break;
3027 case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR:
3028 ascq = 0x02;
3029 break;
3030 case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR:
3031 ascq = 0x03;
3032 break;
3033 default:
3034 ascq = 0x00;
3035 break;
3036 }
3037
3038 mpi3mr_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
3039 0x10, ascq);
3040 scmd->result = (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
3041}
3042
3043/**
3044 * mpi3mr_process_op_reply_desc - reply descriptor handler
3045 * @mrioc: Adapter instance reference
3046 * @reply_desc: Operational reply descriptor
3047 * @reply_dma: place holder for reply DMA address
3048 * @qidx: Operational queue index
3049 *
3050 * Process the operational reply descriptor and identifies the
3051 * descriptor type. Based on the descriptor map the MPI3 request
3052 * status to a SCSI command status and calls scsi_done call
3053 * back.
3054 *
3055 * Return: Nothing
3056 */
3057void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc,
3058 struct mpi3_default_reply_descriptor *reply_desc, u64 *reply_dma, u16 qidx)
3059{
3060 u16 reply_desc_type, host_tag = 0;
3061 u16 ioc_status = MPI3_IOCSTATUS_SUCCESS;
3062 u32 ioc_loginfo = 0;
3063 struct mpi3_status_reply_descriptor *status_desc = NULL;
3064 struct mpi3_address_reply_descriptor *addr_desc = NULL;
3065 struct mpi3_success_reply_descriptor *success_desc = NULL;
3066 struct mpi3_scsi_io_reply *scsi_reply = NULL;
3067 struct scsi_cmnd *scmd = NULL;
3068 struct scmd_priv *priv = NULL;
3069 u8 *sense_buf = NULL;
3070 u8 scsi_state = 0, scsi_status = 0, sense_state = 0;
3071 u32 xfer_count = 0, sense_count = 0, resp_data = 0;
3072 u16 dev_handle = 0xFFFF;
3073 struct scsi_sense_hdr sshdr;
3074 struct mpi3mr_stgt_priv_data *stgt_priv_data = NULL;
3075 struct mpi3mr_sdev_priv_data *sdev_priv_data = NULL;
3076 u32 ioc_pend_data_len = 0, tg_pend_data_len = 0, data_len_blks = 0;
3077 struct mpi3mr_throttle_group_info *tg = NULL;
3078 u8 throttle_enabled_dev = 0;
3079
3080 *reply_dma = 0;
3081 reply_desc_type = le16_to_cpu(reply_desc->reply_flags) &
3082 MPI3_REPLY_DESCRIPT_FLAGS_TYPE_MASK;
3083 switch (reply_desc_type) {
3084 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_STATUS:
3085 status_desc = (struct mpi3_status_reply_descriptor *)reply_desc;
3086 host_tag = le16_to_cpu(status_desc->host_tag);
3087 ioc_status = le16_to_cpu(status_desc->ioc_status);
3088 if (ioc_status &
3089 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
3090 ioc_loginfo = le32_to_cpu(status_desc->ioc_log_info);
3091 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
3092 break;
3093 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_ADDRESS_REPLY:
3094 addr_desc = (struct mpi3_address_reply_descriptor *)reply_desc;
3095 *reply_dma = le64_to_cpu(addr_desc->reply_frame_address);
3096 scsi_reply = mpi3mr_get_reply_virt_addr(mrioc,
3097 *reply_dma);
3098 if (!scsi_reply) {
3099 panic("%s: scsi_reply is NULL, this shouldn't happen\n",
3100 mrioc->name);
3101 goto out;
3102 }
3103 host_tag = le16_to_cpu(scsi_reply->host_tag);
3104 ioc_status = le16_to_cpu(scsi_reply->ioc_status);
3105 scsi_status = scsi_reply->scsi_status;
3106 scsi_state = scsi_reply->scsi_state;
3107 dev_handle = le16_to_cpu(scsi_reply->dev_handle);
3108 sense_state = (scsi_state & MPI3_SCSI_STATE_SENSE_MASK);
3109 xfer_count = le32_to_cpu(scsi_reply->transfer_count);
3110 sense_count = le32_to_cpu(scsi_reply->sense_count);
3111 resp_data = le32_to_cpu(scsi_reply->response_data);
3112 sense_buf = mpi3mr_get_sensebuf_virt_addr(mrioc,
3113 le64_to_cpu(scsi_reply->sense_data_buffer_address));
3114 if (ioc_status &
3115 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
3116 ioc_loginfo = le32_to_cpu(scsi_reply->ioc_log_info);
3117 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
3118 if (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY)
3119 panic("%s: Ran out of sense buffers\n", mrioc->name);
3120 break;
3121 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_SUCCESS:
3122 success_desc = (struct mpi3_success_reply_descriptor *)reply_desc;
3123 host_tag = le16_to_cpu(success_desc->host_tag);
3124 break;
3125 default:
3126 break;
3127 }
3128 scmd = mpi3mr_scmd_from_host_tag(mrioc, host_tag, qidx);
3129 if (!scmd) {
3130 panic("%s: Cannot Identify scmd for host_tag 0x%x\n",
3131 mrioc->name, host_tag);
3132 goto out;
3133 }
3134 priv = scsi_cmd_priv(scmd);
3135
3136 data_len_blks = scsi_bufflen(scmd) >> 9;
3137 sdev_priv_data = scmd->device->hostdata;
3138 if (sdev_priv_data) {
3139 stgt_priv_data = sdev_priv_data->tgt_priv_data;
3140 if (stgt_priv_data) {
3141 tg = stgt_priv_data->throttle_group;
3142 throttle_enabled_dev =
3143 stgt_priv_data->io_throttle_enabled;
3144 }
3145 }
3146 if (unlikely((data_len_blks >= mrioc->io_throttle_data_length) &&
3147 throttle_enabled_dev)) {
3148 ioc_pend_data_len = atomic_sub_return(data_len_blks,
3149 &mrioc->pend_large_data_sz);
3150 if (tg) {
3151 tg_pend_data_len = atomic_sub_return(data_len_blks,
3152 &tg->pend_large_data_sz);
3153 if (tg->io_divert && ((ioc_pend_data_len <=
3154 mrioc->io_throttle_low) &&
3155 (tg_pend_data_len <= tg->low))) {
3156 tg->io_divert = 0;
3157 mpi3mr_set_io_divert_for_all_vd_in_tg(
3158 mrioc, tg, 0);
3159 }
3160 } else {
3161 if (ioc_pend_data_len <= mrioc->io_throttle_low)
3162 stgt_priv_data->io_divert = 0;
3163 }
3164 } else if (unlikely((stgt_priv_data && stgt_priv_data->io_divert))) {
3165 ioc_pend_data_len = atomic_read(&mrioc->pend_large_data_sz);
3166 if (!tg) {
3167 if (ioc_pend_data_len <= mrioc->io_throttle_low)
3168 stgt_priv_data->io_divert = 0;
3169
3170 } else if (ioc_pend_data_len <= mrioc->io_throttle_low) {
3171 tg_pend_data_len = atomic_read(&tg->pend_large_data_sz);
3172 if (tg->io_divert && (tg_pend_data_len <= tg->low)) {
3173 tg->io_divert = 0;
3174 mpi3mr_set_io_divert_for_all_vd_in_tg(
3175 mrioc, tg, 0);
3176 }
3177 }
3178 }
3179
3180 if (success_desc) {
3181 scmd->result = DID_OK << 16;
3182 goto out_success;
3183 }
3184
3185 scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_count);
3186 if (ioc_status == MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN &&
3187 xfer_count == 0 && (scsi_status == MPI3_SCSI_STATUS_BUSY ||
3188 scsi_status == MPI3_SCSI_STATUS_RESERVATION_CONFLICT ||
3189 scsi_status == MPI3_SCSI_STATUS_TASK_SET_FULL))
3190 ioc_status = MPI3_IOCSTATUS_SUCCESS;
3191
3192 if ((sense_state == MPI3_SCSI_STATE_SENSE_VALID) && sense_count &&
3193 sense_buf) {
3194 u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE, sense_count);
3195
3196 memcpy(scmd->sense_buffer, sense_buf, sz);
3197 }
3198
3199 switch (ioc_status) {
3200 case MPI3_IOCSTATUS_BUSY:
3201 case MPI3_IOCSTATUS_INSUFFICIENT_RESOURCES:
3202 scmd->result = SAM_STAT_BUSY;
3203 break;
3204 case MPI3_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
3205 scmd->result = DID_NO_CONNECT << 16;
3206 break;
3207 case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED:
3208 scmd->result = DID_SOFT_ERROR << 16;
3209 break;
3210 case MPI3_IOCSTATUS_SCSI_TASK_TERMINATED:
3211 case MPI3_IOCSTATUS_SCSI_EXT_TERMINATED:
3212 scmd->result = DID_RESET << 16;
3213 break;
3214 case MPI3_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
3215 if ((xfer_count == 0) || (scmd->underflow > xfer_count))
3216 scmd->result = DID_SOFT_ERROR << 16;
3217 else
3218 scmd->result = (DID_OK << 16) | scsi_status;
3219 break;
3220 case MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN:
3221 scmd->result = (DID_OK << 16) | scsi_status;
3222 if (sense_state == MPI3_SCSI_STATE_SENSE_VALID)
3223 break;
3224 if (xfer_count < scmd->underflow) {
3225 if (scsi_status == SAM_STAT_BUSY)
3226 scmd->result = SAM_STAT_BUSY;
3227 else
3228 scmd->result = DID_SOFT_ERROR << 16;
3229 } else if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
3230 (sense_state != MPI3_SCSI_STATE_SENSE_NOT_AVAILABLE))
3231 scmd->result = DID_SOFT_ERROR << 16;
3232 else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
3233 scmd->result = DID_RESET << 16;
3234 break;
3235 case MPI3_IOCSTATUS_SCSI_DATA_OVERRUN:
3236 scsi_set_resid(scmd, 0);
3237 fallthrough;
3238 case MPI3_IOCSTATUS_SCSI_RECOVERED_ERROR:
3239 case MPI3_IOCSTATUS_SUCCESS:
3240 scmd->result = (DID_OK << 16) | scsi_status;
3241 if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
3242 (sense_state == MPI3_SCSI_STATE_SENSE_FAILED) ||
3243 (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY))
3244 scmd->result = DID_SOFT_ERROR << 16;
3245 else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
3246 scmd->result = DID_RESET << 16;
3247 break;
3248 case MPI3_IOCSTATUS_EEDP_GUARD_ERROR:
3249 case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR:
3250 case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR:
3251 mpi3mr_map_eedp_error(scmd, ioc_status);
3252 break;
3253 case MPI3_IOCSTATUS_SCSI_PROTOCOL_ERROR:
3254 case MPI3_IOCSTATUS_INVALID_FUNCTION:
3255 case MPI3_IOCSTATUS_INVALID_SGL:
3256 case MPI3_IOCSTATUS_INTERNAL_ERROR:
3257 case MPI3_IOCSTATUS_INVALID_FIELD:
3258 case MPI3_IOCSTATUS_INVALID_STATE:
3259 case MPI3_IOCSTATUS_SCSI_IO_DATA_ERROR:
3260 case MPI3_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
3261 case MPI3_IOCSTATUS_INSUFFICIENT_POWER:
3262 default:
3263 scmd->result = DID_SOFT_ERROR << 16;
3264 break;
3265 }
3266
3267 if (scmd->result != (DID_OK << 16) && (scmd->cmnd[0] != ATA_12) &&
3268 (scmd->cmnd[0] != ATA_16) &&
3269 mrioc->logging_level & MPI3_DEBUG_SCSI_ERROR) {
3270 ioc_info(mrioc, "%s :scmd->result 0x%x\n", __func__,
3271 scmd->result);
3272 scsi_print_command(scmd);
3273 ioc_info(mrioc,
3274 "%s :Command issued to handle 0x%02x returned with error 0x%04x loginfo 0x%08x, qid %d\n",
3275 __func__, dev_handle, ioc_status, ioc_loginfo,
3276 priv->req_q_idx + 1);
3277 ioc_info(mrioc,
3278 " host_tag %d scsi_state 0x%02x scsi_status 0x%02x, xfer_cnt %d resp_data 0x%x\n",
3279 host_tag, scsi_state, scsi_status, xfer_count, resp_data);
3280 if (sense_buf) {
3281 scsi_normalize_sense(sense_buf, sense_count, &sshdr);
3282 ioc_info(mrioc,
3283 "%s :sense_count 0x%x, sense_key 0x%x ASC 0x%x, ASCQ 0x%x\n",
3284 __func__, sense_count, sshdr.sense_key,
3285 sshdr.asc, sshdr.ascq);
3286 }
3287 }
3288out_success:
3289 if (priv->meta_sg_valid) {
3290 dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd),
3291 scsi_prot_sg_count(scmd), scmd->sc_data_direction);
3292 }
3293 mpi3mr_clear_scmd_priv(mrioc, scmd);
3294 scsi_dma_unmap(scmd);
3295 scsi_done(scmd);
3296out:
3297 if (sense_buf)
3298 mpi3mr_repost_sense_buf(mrioc,
3299 le64_to_cpu(scsi_reply->sense_data_buffer_address));
3300}
3301
3302/**
3303 * mpi3mr_get_chain_idx - get free chain buffer index
3304 * @mrioc: Adapter instance reference
3305 *
3306 * Try to get a free chain buffer index from the free pool.
3307 *
3308 * Return: -1 on failure or the free chain buffer index
3309 */
3310static int mpi3mr_get_chain_idx(struct mpi3mr_ioc *mrioc)
3311{
3312 u8 retry_count = 5;
3313 int cmd_idx = -1;
3314
3315 do {
3316 spin_lock(&mrioc->chain_buf_lock);
3317 cmd_idx = find_first_zero_bit(mrioc->chain_bitmap,
3318 mrioc->chain_buf_count);
3319 if (cmd_idx < mrioc->chain_buf_count) {
3320 set_bit(cmd_idx, mrioc->chain_bitmap);
3321 spin_unlock(&mrioc->chain_buf_lock);
3322 break;
3323 }
3324 spin_unlock(&mrioc->chain_buf_lock);
3325 cmd_idx = -1;
3326 } while (retry_count--);
3327 return cmd_idx;
3328}
3329
3330/**
3331 * mpi3mr_prepare_sg_scmd - build scatter gather list
3332 * @mrioc: Adapter instance reference
3333 * @scmd: SCSI command reference
3334 * @scsiio_req: MPI3 SCSI IO request
3335 *
3336 * This function maps SCSI command's data and protection SGEs to
3337 * MPI request SGEs. If required additional 4K chain buffer is
3338 * used to send the SGEs.
3339 *
3340 * Return: 0 on success, -ENOMEM on dma_map_sg failure
3341 */
3342static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc,
3343 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
3344{
3345 dma_addr_t chain_dma;
3346 struct scatterlist *sg_scmd;
3347 void *sg_local, *chain;
3348 u32 chain_length;
3349 int sges_left, chain_idx;
3350 u32 sges_in_segment;
3351 u8 simple_sgl_flags;
3352 u8 simple_sgl_flags_last;
3353 u8 last_chain_sgl_flags;
3354 struct chain_element *chain_req;
3355 struct scmd_priv *priv = NULL;
3356 u32 meta_sg = le32_to_cpu(scsiio_req->flags) &
3357 MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI;
3358
3359 priv = scsi_cmd_priv(scmd);
3360
3361 simple_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE |
3362 MPI3_SGE_FLAGS_DLAS_SYSTEM;
3363 simple_sgl_flags_last = simple_sgl_flags |
3364 MPI3_SGE_FLAGS_END_OF_LIST;
3365 last_chain_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_LAST_CHAIN |
3366 MPI3_SGE_FLAGS_DLAS_SYSTEM;
3367
3368 if (meta_sg)
3369 sg_local = &scsiio_req->sgl[MPI3_SCSIIO_METASGL_INDEX];
3370 else
3371 sg_local = &scsiio_req->sgl;
3372
3373 if (!scsiio_req->data_length && !meta_sg) {
3374 mpi3mr_build_zero_len_sge(sg_local);
3375 return 0;
3376 }
3377
3378 if (meta_sg) {
3379 sg_scmd = scsi_prot_sglist(scmd);
3380 sges_left = dma_map_sg(&mrioc->pdev->dev,
3381 scsi_prot_sglist(scmd),
3382 scsi_prot_sg_count(scmd),
3383 scmd->sc_data_direction);
3384 priv->meta_sg_valid = 1; /* To unmap meta sg DMA */
3385 } else {
3386 sg_scmd = scsi_sglist(scmd);
3387 sges_left = scsi_dma_map(scmd);
3388 }
3389
3390 if (sges_left < 0) {
3391 sdev_printk(KERN_ERR, scmd->device,
3392 "scsi_dma_map failed: request for %d bytes!\n",
3393 scsi_bufflen(scmd));
3394 return -ENOMEM;
3395 }
3396 if (sges_left > MPI3MR_SG_DEPTH) {
3397 sdev_printk(KERN_ERR, scmd->device,
3398 "scsi_dma_map returned unsupported sge count %d!\n",
3399 sges_left);
3400 return -ENOMEM;
3401 }
3402
3403 sges_in_segment = (mrioc->facts.op_req_sz -
3404 offsetof(struct mpi3_scsi_io_request, sgl)) / sizeof(struct mpi3_sge_common);
3405
3406 if (scsiio_req->sgl[0].eedp.flags ==
3407 MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED && !meta_sg) {
3408 sg_local += sizeof(struct mpi3_sge_common);
3409 sges_in_segment--;
3410 /* Reserve 1st segment (scsiio_req->sgl[0]) for eedp */
3411 }
3412
3413 if (scsiio_req->msg_flags ==
3414 MPI3_SCSIIO_MSGFLAGS_METASGL_VALID && !meta_sg) {
3415 sges_in_segment--;
3416 /* Reserve last segment (scsiio_req->sgl[3]) for meta sg */
3417 }
3418
3419 if (meta_sg)
3420 sges_in_segment = 1;
3421
3422 if (sges_left <= sges_in_segment)
3423 goto fill_in_last_segment;
3424
3425 /* fill in main message segment when there is a chain following */
3426 while (sges_in_segment > 1) {
3427 mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
3428 sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
3429 sg_scmd = sg_next(sg_scmd);
3430 sg_local += sizeof(struct mpi3_sge_common);
3431 sges_left--;
3432 sges_in_segment--;
3433 }
3434
3435 chain_idx = mpi3mr_get_chain_idx(mrioc);
3436 if (chain_idx < 0)
3437 return -1;
3438 chain_req = &mrioc->chain_sgl_list[chain_idx];
3439 if (meta_sg)
3440 priv->meta_chain_idx = chain_idx;
3441 else
3442 priv->chain_idx = chain_idx;
3443
3444 chain = chain_req->addr;
3445 chain_dma = chain_req->dma_addr;
3446 sges_in_segment = sges_left;
3447 chain_length = sges_in_segment * sizeof(struct mpi3_sge_common);
3448
3449 mpi3mr_add_sg_single(sg_local, last_chain_sgl_flags,
3450 chain_length, chain_dma);
3451
3452 sg_local = chain;
3453
3454fill_in_last_segment:
3455 while (sges_left > 0) {
3456 if (sges_left == 1)
3457 mpi3mr_add_sg_single(sg_local,
3458 simple_sgl_flags_last, sg_dma_len(sg_scmd),
3459 sg_dma_address(sg_scmd));
3460 else
3461 mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
3462 sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
3463 sg_scmd = sg_next(sg_scmd);
3464 sg_local += sizeof(struct mpi3_sge_common);
3465 sges_left--;
3466 }
3467
3468 return 0;
3469}
3470
3471/**
3472 * mpi3mr_build_sg_scmd - build scatter gather list for SCSI IO
3473 * @mrioc: Adapter instance reference
3474 * @scmd: SCSI command reference
3475 * @scsiio_req: MPI3 SCSI IO request
3476 *
3477 * This function calls mpi3mr_prepare_sg_scmd for constructing
3478 * both data SGEs and protection information SGEs in the MPI
3479 * format from the SCSI Command as appropriate .
3480 *
3481 * Return: return value of mpi3mr_prepare_sg_scmd.
3482 */
3483static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc,
3484 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
3485{
3486 int ret;
3487
3488 ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
3489 if (ret)
3490 return ret;
3491
3492 if (scsiio_req->msg_flags == MPI3_SCSIIO_MSGFLAGS_METASGL_VALID) {
3493 /* There is a valid meta sg */
3494 scsiio_req->flags |=
3495 cpu_to_le32(MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI);
3496 ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
3497 }
3498
3499 return ret;
3500}
3501
3502/**
3503 * mpi3mr_tm_response_name - get TM response as a string
3504 * @resp_code: TM response code
3505 *
3506 * Convert known task management response code as a readable
3507 * string.
3508 *
3509 * Return: response code string.
3510 */
3511static const char *mpi3mr_tm_response_name(u8 resp_code)
3512{
3513 char *desc;
3514
3515 switch (resp_code) {
3516 case MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE:
3517 desc = "task management request completed";
3518 break;
3519 case MPI3_SCSITASKMGMT_RSPCODE_INVALID_FRAME:
3520 desc = "invalid frame";
3521 break;
3522 case MPI3_SCSITASKMGMT_RSPCODE_TM_FUNCTION_NOT_SUPPORTED:
3523 desc = "task management request not supported";
3524 break;
3525 case MPI3_SCSITASKMGMT_RSPCODE_TM_FAILED:
3526 desc = "task management request failed";
3527 break;
3528 case MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED:
3529 desc = "task management request succeeded";
3530 break;
3531 case MPI3_SCSITASKMGMT_RSPCODE_TM_INVALID_LUN:
3532 desc = "invalid LUN";
3533 break;
3534 case MPI3_SCSITASKMGMT_RSPCODE_TM_OVERLAPPED_TAG:
3535 desc = "overlapped tag attempted";
3536 break;
3537 case MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC:
3538 desc = "task queued, however not sent to target";
3539 break;
3540 case MPI3_SCSITASKMGMT_RSPCODE_TM_NVME_DENIED:
3541 desc = "task management request denied by NVMe device";
3542 break;
3543 default:
3544 desc = "unknown";
3545 break;
3546 }
3547
3548 return desc;
3549}
3550
3551inline void mpi3mr_poll_pend_io_completions(struct mpi3mr_ioc *mrioc)
3552{
3553 int i;
3554 int num_of_reply_queues =
3555 mrioc->num_op_reply_q + mrioc->op_reply_q_offset;
3556
3557 for (i = mrioc->op_reply_q_offset; i < num_of_reply_queues; i++)
3558 mpi3mr_process_op_reply_q(mrioc,
3559 mrioc->intr_info[i].op_reply_q);
3560}
3561
3562/**
3563 * mpi3mr_issue_tm - Issue Task Management request
3564 * @mrioc: Adapter instance reference
3565 * @tm_type: Task Management type
3566 * @handle: Device handle
3567 * @lun: lun ID
3568 * @htag: Host tag of the TM request
3569 * @timeout: TM timeout value
3570 * @drv_cmd: Internal command tracker
3571 * @resp_code: Response code place holder
3572 * @scmd: SCSI command
3573 *
3574 * Issues a Task Management Request to the controller for a
3575 * specified target, lun and command and wait for its completion
3576 * and check TM response. Recover the TM if it timed out by
3577 * issuing controller reset.
3578 *
3579 * Return: 0 on success, non-zero on errors
3580 */
3581int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type,
3582 u16 handle, uint lun, u16 htag, ulong timeout,
3583 struct mpi3mr_drv_cmd *drv_cmd,
3584 u8 *resp_code, struct scsi_cmnd *scmd)
3585{
3586 struct mpi3_scsi_task_mgmt_request tm_req;
3587 struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL;
3588 int retval = 0;
3589 struct mpi3mr_tgt_dev *tgtdev = NULL;
3590 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
3591 struct scmd_priv *cmd_priv = NULL;
3592 struct scsi_device *sdev = NULL;
3593 struct mpi3mr_sdev_priv_data *sdev_priv_data = NULL;
3594
3595 ioc_info(mrioc, "%s :Issue TM: TM type (0x%x) for devhandle 0x%04x\n",
3596 __func__, tm_type, handle);
3597 if (mrioc->unrecoverable) {
3598 retval = -1;
3599 ioc_err(mrioc, "%s :Issue TM: Unrecoverable controller\n",
3600 __func__);
3601 goto out;
3602 }
3603
3604 memset(&tm_req, 0, sizeof(tm_req));
3605 mutex_lock(&drv_cmd->mutex);
3606 if (drv_cmd->state & MPI3MR_CMD_PENDING) {
3607 retval = -1;
3608 ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__);
3609 mutex_unlock(&drv_cmd->mutex);
3610 goto out;
3611 }
3612 if (mrioc->reset_in_progress) {
3613 retval = -1;
3614 ioc_err(mrioc, "%s :Issue TM: Reset in progress\n", __func__);
3615 mutex_unlock(&drv_cmd->mutex);
3616 goto out;
3617 }
3618
3619 drv_cmd->state = MPI3MR_CMD_PENDING;
3620 drv_cmd->is_waiting = 1;
3621 drv_cmd->callback = NULL;
3622 tm_req.dev_handle = cpu_to_le16(handle);
3623 tm_req.task_type = tm_type;
3624 tm_req.host_tag = cpu_to_le16(htag);
3625
3626 int_to_scsilun(lun, (struct scsi_lun *)tm_req.lun);
3627 tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT;
3628
3629 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
3630
3631 if (scmd) {
3632 sdev = scmd->device;
3633 sdev_priv_data = sdev->hostdata;
3634 scsi_tgt_priv_data = ((sdev_priv_data) ?
3635 sdev_priv_data->tgt_priv_data : NULL);
3636 } else {
3637 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
3638 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
3639 tgtdev->starget->hostdata;
3640 }
3641
3642 if (scsi_tgt_priv_data)
3643 atomic_inc(&scsi_tgt_priv_data->block_io);
3644
3645 if (tgtdev && (tgtdev->dev_type == MPI3_DEVICE_DEVFORM_PCIE)) {
3646 if (cmd_priv && tgtdev->dev_spec.pcie_inf.abort_to)
3647 timeout = tgtdev->dev_spec.pcie_inf.abort_to;
3648 else if (!cmd_priv && tgtdev->dev_spec.pcie_inf.reset_to)
3649 timeout = tgtdev->dev_spec.pcie_inf.reset_to;
3650 }
3651
3652 init_completion(&drv_cmd->done);
3653 retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1);
3654 if (retval) {
3655 ioc_err(mrioc, "%s :Issue TM: Admin Post failed\n", __func__);
3656 goto out_unlock;
3657 }
3658 wait_for_completion_timeout(&drv_cmd->done, (timeout * HZ));
3659
3660 if (!(drv_cmd->state & MPI3MR_CMD_COMPLETE)) {
3661 drv_cmd->is_waiting = 0;
3662 retval = -1;
3663 if (!(drv_cmd->state & MPI3MR_CMD_RESET)) {
3664 dprint_tm(mrioc,
3665 "task management request timed out after %ld seconds\n",
3666 timeout);
3667 if (mrioc->logging_level & MPI3_DEBUG_TM)
3668 dprint_dump_req(&tm_req, sizeof(tm_req)/4);
3669 mpi3mr_soft_reset_handler(mrioc,
3670 MPI3MR_RESET_FROM_TM_TIMEOUT, 1);
3671 }
3672 goto out_unlock;
3673 }
3674
3675 if (!(drv_cmd->state & MPI3MR_CMD_REPLY_VALID)) {
3676 dprint_tm(mrioc, "invalid task management reply message\n");
3677 retval = -1;
3678 goto out_unlock;
3679 }
3680
3681 tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
3682
3683 switch (drv_cmd->ioc_status) {
3684 case MPI3_IOCSTATUS_SUCCESS:
3685 *resp_code = le32_to_cpu(tm_reply->response_data) &
3686 MPI3MR_RI_MASK_RESPCODE;
3687 break;
3688 case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED:
3689 *resp_code = MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE;
3690 break;
3691 default:
3692 dprint_tm(mrioc,
3693 "task management request to handle(0x%04x) is failed with ioc_status(0x%04x) log_info(0x%08x)\n",
3694 handle, drv_cmd->ioc_status, drv_cmd->ioc_loginfo);
3695 retval = -1;
3696 goto out_unlock;
3697 }
3698
3699 switch (*resp_code) {
3700 case MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED:
3701 case MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE:
3702 break;
3703 case MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC:
3704 if (tm_type != MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
3705 retval = -1;
3706 break;
3707 default:
3708 retval = -1;
3709 break;
3710 }
3711
3712 dprint_tm(mrioc,
3713 "task management request type(%d) completed for handle(0x%04x) with ioc_status(0x%04x), log_info(0x%08x), termination_count(%d), response:%s(0x%x)\n",
3714 tm_type, handle, drv_cmd->ioc_status, drv_cmd->ioc_loginfo,
3715 le32_to_cpu(tm_reply->termination_count),
3716 mpi3mr_tm_response_name(*resp_code), *resp_code);
3717
3718 if (!retval) {
3719 mpi3mr_ioc_disable_intr(mrioc);
3720 mpi3mr_poll_pend_io_completions(mrioc);
3721 mpi3mr_ioc_enable_intr(mrioc);
3722 mpi3mr_poll_pend_io_completions(mrioc);
3723 }
3724 switch (tm_type) {
3725 case MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
3726 if (!scsi_tgt_priv_data)
3727 break;
3728 scsi_tgt_priv_data->pend_count = 0;
3729 blk_mq_tagset_busy_iter(&mrioc->shost->tag_set,
3730 mpi3mr_count_tgt_pending,
3731 (void *)scsi_tgt_priv_data->starget);
3732 break;
3733 case MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
3734 if (!sdev_priv_data)
3735 break;
3736 sdev_priv_data->pend_count = 0;
3737 blk_mq_tagset_busy_iter(&mrioc->shost->tag_set,
3738 mpi3mr_count_dev_pending, (void *)sdev);
3739 break;
3740 default:
3741 break;
3742 }
3743
3744out_unlock:
3745 drv_cmd->state = MPI3MR_CMD_NOTUSED;
3746 mutex_unlock(&drv_cmd->mutex);
3747 if (scsi_tgt_priv_data)
3748 atomic_dec_if_positive(&scsi_tgt_priv_data->block_io);
3749 if (tgtdev)
3750 mpi3mr_tgtdev_put(tgtdev);
3751out:
3752 return retval;
3753}
3754
3755/**
3756 * mpi3mr_bios_param - BIOS param callback
3757 * @sdev: SCSI device reference
3758 * @bdev: Block device reference
3759 * @capacity: Capacity in logical sectors
3760 * @params: Parameter array
3761 *
3762 * Just the parameters with heads/secots/cylinders.
3763 *
3764 * Return: 0 always
3765 */
3766static int mpi3mr_bios_param(struct scsi_device *sdev,
3767 struct block_device *bdev, sector_t capacity, int params[])
3768{
3769 int heads;
3770 int sectors;
3771 sector_t cylinders;
3772 ulong dummy;
3773
3774 heads = 64;
3775 sectors = 32;
3776
3777 dummy = heads * sectors;
3778 cylinders = capacity;
3779 sector_div(cylinders, dummy);
3780
3781 if ((ulong)capacity >= 0x200000) {
3782 heads = 255;
3783 sectors = 63;
3784 dummy = heads * sectors;
3785 cylinders = capacity;
3786 sector_div(cylinders, dummy);
3787 }
3788
3789 params[0] = heads;
3790 params[1] = sectors;
3791 params[2] = cylinders;
3792 return 0;
3793}
3794
3795/**
3796 * mpi3mr_map_queues - Map queues callback handler
3797 * @shost: SCSI host reference
3798 *
3799 * Maps default and poll queues.
3800 *
3801 * Return: return zero.
3802 */
3803static void mpi3mr_map_queues(struct Scsi_Host *shost)
3804{
3805 struct mpi3mr_ioc *mrioc = shost_priv(shost);
3806 int i, qoff, offset;
3807 struct blk_mq_queue_map *map = NULL;
3808
3809 offset = mrioc->op_reply_q_offset;
3810
3811 for (i = 0, qoff = 0; i < HCTX_MAX_TYPES; i++) {
3812 map = &shost->tag_set.map[i];
3813
3814 map->nr_queues = 0;
3815
3816 if (i == HCTX_TYPE_DEFAULT)
3817 map->nr_queues = mrioc->default_qcount;
3818 else if (i == HCTX_TYPE_POLL)
3819 map->nr_queues = mrioc->active_poll_qcount;
3820
3821 if (!map->nr_queues) {
3822 BUG_ON(i == HCTX_TYPE_DEFAULT);
3823 continue;
3824 }
3825
3826 /*
3827 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3828 * affinity), so use the regular blk-mq cpu mapping
3829 */
3830 map->queue_offset = qoff;
3831 if (i != HCTX_TYPE_POLL)
3832 blk_mq_pci_map_queues(map, mrioc->pdev, offset);
3833 else
3834 blk_mq_map_queues(map);
3835
3836 qoff += map->nr_queues;
3837 offset += map->nr_queues;
3838 }
3839}
3840
3841/**
3842 * mpi3mr_get_fw_pending_ios - Calculate pending I/O count
3843 * @mrioc: Adapter instance reference
3844 *
3845 * Calculate the pending I/Os for the controller and return.
3846 *
3847 * Return: Number of pending I/Os
3848 */
3849static inline int mpi3mr_get_fw_pending_ios(struct mpi3mr_ioc *mrioc)
3850{
3851 u16 i;
3852 uint pend_ios = 0;
3853
3854 for (i = 0; i < mrioc->num_op_reply_q; i++)
3855 pend_ios += atomic_read(&mrioc->op_reply_qinfo[i].pend_ios);
3856 return pend_ios;
3857}
3858
3859/**
3860 * mpi3mr_print_pending_host_io - print pending I/Os
3861 * @mrioc: Adapter instance reference
3862 *
3863 * Print number of pending I/Os and each I/O details prior to
3864 * reset for debug purpose.
3865 *
3866 * Return: Nothing
3867 */
3868static void mpi3mr_print_pending_host_io(struct mpi3mr_ioc *mrioc)
3869{
3870 struct Scsi_Host *shost = mrioc->shost;
3871
3872 ioc_info(mrioc, "%s :Pending commands prior to reset: %d\n",
3873 __func__, mpi3mr_get_fw_pending_ios(mrioc));
3874 blk_mq_tagset_busy_iter(&shost->tag_set,
3875 mpi3mr_print_scmd, (void *)mrioc);
3876}
3877
3878/**
3879 * mpi3mr_wait_for_host_io - block for I/Os to complete
3880 * @mrioc: Adapter instance reference
3881 * @timeout: time out in seconds
3882 * Waits for pending I/Os for the given adapter to complete or
3883 * to hit the timeout.
3884 *
3885 * Return: Nothing
3886 */
3887void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout)
3888{
3889 enum mpi3mr_iocstate iocstate;
3890 int i = 0;
3891
3892 iocstate = mpi3mr_get_iocstate(mrioc);
3893 if (iocstate != MRIOC_STATE_READY)
3894 return;
3895
3896 if (!mpi3mr_get_fw_pending_ios(mrioc))
3897 return;
3898 ioc_info(mrioc,
3899 "%s :Waiting for %d seconds prior to reset for %d I/O\n",
3900 __func__, timeout, mpi3mr_get_fw_pending_ios(mrioc));
3901
3902 for (i = 0; i < timeout; i++) {
3903 if (!mpi3mr_get_fw_pending_ios(mrioc))
3904 break;
3905 iocstate = mpi3mr_get_iocstate(mrioc);
3906 if (iocstate != MRIOC_STATE_READY)
3907 break;
3908 msleep(1000);
3909 }
3910
3911 ioc_info(mrioc, "%s :Pending I/Os after wait is: %d\n", __func__,
3912 mpi3mr_get_fw_pending_ios(mrioc));
3913}
3914
3915/**
3916 * mpi3mr_eh_host_reset - Host reset error handling callback
3917 * @scmd: SCSI command reference
3918 *
3919 * Issue controller reset if the scmd is for a Physical Device,
3920 * if the scmd is for RAID volume, then wait for
3921 * MPI3MR_RAID_ERRREC_RESET_TIMEOUT and checke whether any
3922 * pending I/Os prior to issuing reset to the controller.
3923 *
3924 * Return: SUCCESS of successful reset else FAILED
3925 */
3926static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd)
3927{
3928 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
3929 struct mpi3mr_stgt_priv_data *stgt_priv_data;
3930 struct mpi3mr_sdev_priv_data *sdev_priv_data;
3931 u8 dev_type = MPI3_DEVICE_DEVFORM_VD;
3932 int retval = FAILED, ret;
3933
3934 sdev_priv_data = scmd->device->hostdata;
3935 if (sdev_priv_data && sdev_priv_data->tgt_priv_data) {
3936 stgt_priv_data = sdev_priv_data->tgt_priv_data;
3937 dev_type = stgt_priv_data->dev_type;
3938 }
3939
3940 if (dev_type == MPI3_DEVICE_DEVFORM_VD) {
3941 mpi3mr_wait_for_host_io(mrioc,
3942 MPI3MR_RAID_ERRREC_RESET_TIMEOUT);
3943 if (!mpi3mr_get_fw_pending_ios(mrioc)) {
3944 retval = SUCCESS;
3945 goto out;
3946 }
3947 }
3948
3949 mpi3mr_print_pending_host_io(mrioc);
3950 ret = mpi3mr_soft_reset_handler(mrioc,
3951 MPI3MR_RESET_FROM_EH_HOS, 1);
3952 if (ret)
3953 goto out;
3954
3955 retval = SUCCESS;
3956out:
3957 sdev_printk(KERN_INFO, scmd->device,
3958 "Host reset is %s for scmd(%p)\n",
3959 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
3960
3961 return retval;
3962}
3963
3964/**
3965 * mpi3mr_eh_target_reset - Target reset error handling callback
3966 * @scmd: SCSI command reference
3967 *
3968 * Issue Target reset Task Management and verify the scmd is
3969 * terminated successfully and return status accordingly.
3970 *
3971 * Return: SUCCESS of successful termination of the scmd else
3972 * FAILED
3973 */
3974static int mpi3mr_eh_target_reset(struct scsi_cmnd *scmd)
3975{
3976 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
3977 struct mpi3mr_stgt_priv_data *stgt_priv_data;
3978 struct mpi3mr_sdev_priv_data *sdev_priv_data;
3979 u16 dev_handle;
3980 u8 resp_code = 0;
3981 int retval = FAILED, ret = 0;
3982
3983 sdev_printk(KERN_INFO, scmd->device,
3984 "Attempting Target Reset! scmd(%p)\n", scmd);
3985 scsi_print_command(scmd);
3986
3987 sdev_priv_data = scmd->device->hostdata;
3988 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
3989 sdev_printk(KERN_INFO, scmd->device,
3990 "SCSI device is not available\n");
3991 retval = SUCCESS;
3992 goto out;
3993 }
3994
3995 stgt_priv_data = sdev_priv_data->tgt_priv_data;
3996 dev_handle = stgt_priv_data->dev_handle;
3997 if (stgt_priv_data->dev_removed) {
3998 sdev_printk(KERN_INFO, scmd->device,
3999 "%s:target(handle = 0x%04x) is removed, target reset is not issued\n",
4000 mrioc->name, dev_handle);
4001 retval = FAILED;
4002 goto out;
4003 }
4004 sdev_printk(KERN_INFO, scmd->device,
4005 "Target Reset is issued to handle(0x%04x)\n",
4006 dev_handle);
4007
4008 ret = mpi3mr_issue_tm(mrioc,
4009 MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET, dev_handle,
4010 sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
4011 MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, scmd);
4012
4013 if (ret)
4014 goto out;
4015
4016 if (stgt_priv_data->pend_count) {
4017 sdev_printk(KERN_INFO, scmd->device,
4018 "%s: target has %d pending commands, target reset is failed\n",
4019 mrioc->name, stgt_priv_data->pend_count);
4020 goto out;
4021 }
4022
4023 retval = SUCCESS;
4024out:
4025 sdev_printk(KERN_INFO, scmd->device,
4026 "%s: target reset is %s for scmd(%p)\n", mrioc->name,
4027 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4028
4029 return retval;
4030}
4031
4032/**
4033 * mpi3mr_eh_dev_reset- Device reset error handling callback
4034 * @scmd: SCSI command reference
4035 *
4036 * Issue lun reset Task Management and verify the scmd is
4037 * terminated successfully and return status accordingly.
4038 *
4039 * Return: SUCCESS of successful termination of the scmd else
4040 * FAILED
4041 */
4042static int mpi3mr_eh_dev_reset(struct scsi_cmnd *scmd)
4043{
4044 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
4045 struct mpi3mr_stgt_priv_data *stgt_priv_data;
4046 struct mpi3mr_sdev_priv_data *sdev_priv_data;
4047 u16 dev_handle;
4048 u8 resp_code = 0;
4049 int retval = FAILED, ret = 0;
4050
4051 sdev_printk(KERN_INFO, scmd->device,
4052 "Attempting Device(lun) Reset! scmd(%p)\n", scmd);
4053 scsi_print_command(scmd);
4054
4055 sdev_priv_data = scmd->device->hostdata;
4056 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
4057 sdev_printk(KERN_INFO, scmd->device,
4058 "SCSI device is not available\n");
4059 retval = SUCCESS;
4060 goto out;
4061 }
4062
4063 stgt_priv_data = sdev_priv_data->tgt_priv_data;
4064 dev_handle = stgt_priv_data->dev_handle;
4065 if (stgt_priv_data->dev_removed) {
4066 sdev_printk(KERN_INFO, scmd->device,
4067 "%s: device(handle = 0x%04x) is removed, device(LUN) reset is not issued\n",
4068 mrioc->name, dev_handle);
4069 retval = FAILED;
4070 goto out;
4071 }
4072 sdev_printk(KERN_INFO, scmd->device,
4073 "Device(lun) Reset is issued to handle(0x%04x)\n", dev_handle);
4074
4075 ret = mpi3mr_issue_tm(mrioc,
4076 MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, dev_handle,
4077 sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
4078 MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, scmd);
4079
4080 if (ret)
4081 goto out;
4082
4083 if (sdev_priv_data->pend_count) {
4084 sdev_printk(KERN_INFO, scmd->device,
4085 "%s: device has %d pending commands, device(LUN) reset is failed\n",
4086 mrioc->name, sdev_priv_data->pend_count);
4087 goto out;
4088 }
4089 retval = SUCCESS;
4090out:
4091 sdev_printk(KERN_INFO, scmd->device,
4092 "%s: device(LUN) reset is %s for scmd(%p)\n", mrioc->name,
4093 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4094
4095 return retval;
4096}
4097
4098/**
4099 * mpi3mr_scan_start - Scan start callback handler
4100 * @shost: SCSI host reference
4101 *
4102 * Issue port enable request asynchronously.
4103 *
4104 * Return: Nothing
4105 */
4106static void mpi3mr_scan_start(struct Scsi_Host *shost)
4107{
4108 struct mpi3mr_ioc *mrioc = shost_priv(shost);
4109
4110 mrioc->scan_started = 1;
4111 ioc_info(mrioc, "%s :Issuing Port Enable\n", __func__);
4112 if (mpi3mr_issue_port_enable(mrioc, 1)) {
4113 ioc_err(mrioc, "%s :Issuing port enable failed\n", __func__);
4114 mrioc->scan_started = 0;
4115 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
4116 }
4117}
4118
4119/**
4120 * mpi3mr_scan_finished - Scan finished callback handler
4121 * @shost: SCSI host reference
4122 * @time: Jiffies from the scan start
4123 *
4124 * Checks whether the port enable is completed or timedout or
4125 * failed and set the scan status accordingly after taking any
4126 * recovery if required.
4127 *
4128 * Return: 1 on scan finished or timed out, 0 for in progress
4129 */
4130static int mpi3mr_scan_finished(struct Scsi_Host *shost,
4131 unsigned long time)
4132{
4133 struct mpi3mr_ioc *mrioc = shost_priv(shost);
4134 u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT;
4135 u32 ioc_status = readl(&mrioc->sysif_regs->ioc_status);
4136
4137 if ((ioc_status & MPI3_SYSIF_IOC_STATUS_RESET_HISTORY) ||
4138 (ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT)) {
4139 ioc_err(mrioc, "port enable failed due to fault or reset\n");
4140 mpi3mr_print_fault_info(mrioc);
4141 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
4142 mrioc->scan_started = 0;
4143 mrioc->init_cmds.is_waiting = 0;
4144 mrioc->init_cmds.callback = NULL;
4145 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
4146 }
4147
4148 if (time >= (pe_timeout * HZ)) {
4149 ioc_err(mrioc, "port enable failed due to time out\n");
4150 mpi3mr_check_rh_fault_ioc(mrioc,
4151 MPI3MR_RESET_FROM_PE_TIMEOUT);
4152 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
4153 mrioc->scan_started = 0;
4154 mrioc->init_cmds.is_waiting = 0;
4155 mrioc->init_cmds.callback = NULL;
4156 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
4157 }
4158
4159 if (mrioc->scan_started)
4160 return 0;
4161
4162 if (mrioc->scan_failed) {
4163 ioc_err(mrioc,
4164 "port enable failed with status=0x%04x\n",
4165 mrioc->scan_failed);
4166 } else
4167 ioc_info(mrioc, "port enable is successfully completed\n");
4168
4169 mpi3mr_start_watchdog(mrioc);
4170 mrioc->is_driver_loading = 0;
4171 mrioc->stop_bsgs = 0;
4172 return 1;
4173}
4174
4175/**
4176 * mpi3mr_slave_destroy - Slave destroy callback handler
4177 * @sdev: SCSI device reference
4178 *
4179 * Cleanup and free per device(lun) private data.
4180 *
4181 * Return: Nothing.
4182 */
4183static void mpi3mr_slave_destroy(struct scsi_device *sdev)
4184{
4185 struct Scsi_Host *shost;
4186 struct mpi3mr_ioc *mrioc;
4187 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
4188 struct mpi3mr_tgt_dev *tgt_dev = NULL;
4189 unsigned long flags;
4190 struct scsi_target *starget;
4191 struct sas_rphy *rphy = NULL;
4192
4193 if (!sdev->hostdata)
4194 return;
4195
4196 starget = scsi_target(sdev);
4197 shost = dev_to_shost(&starget->dev);
4198 mrioc = shost_priv(shost);
4199 scsi_tgt_priv_data = starget->hostdata;
4200
4201 scsi_tgt_priv_data->num_luns--;
4202
4203 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4204 if (starget->channel == mrioc->scsi_device_channel)
4205 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
4206 else if (mrioc->sas_transport_enabled && !starget->channel) {
4207 rphy = dev_to_rphy(starget->dev.parent);
4208 tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
4209 rphy->identify.sas_address, rphy);
4210 }
4211
4212 if (tgt_dev && (!scsi_tgt_priv_data->num_luns))
4213 tgt_dev->starget = NULL;
4214 if (tgt_dev)
4215 mpi3mr_tgtdev_put(tgt_dev);
4216 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4217
4218 kfree(sdev->hostdata);
4219 sdev->hostdata = NULL;
4220}
4221
4222/**
4223 * mpi3mr_target_destroy - Target destroy callback handler
4224 * @starget: SCSI target reference
4225 *
4226 * Cleanup and free per target private data.
4227 *
4228 * Return: Nothing.
4229 */
4230static void mpi3mr_target_destroy(struct scsi_target *starget)
4231{
4232 struct Scsi_Host *shost;
4233 struct mpi3mr_ioc *mrioc;
4234 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
4235 struct mpi3mr_tgt_dev *tgt_dev;
4236 unsigned long flags;
4237
4238 if (!starget->hostdata)
4239 return;
4240
4241 shost = dev_to_shost(&starget->dev);
4242 mrioc = shost_priv(shost);
4243 scsi_tgt_priv_data = starget->hostdata;
4244
4245 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4246 tgt_dev = __mpi3mr_get_tgtdev_from_tgtpriv(mrioc, scsi_tgt_priv_data);
4247 if (tgt_dev && (tgt_dev->starget == starget) &&
4248 (tgt_dev->perst_id == starget->id))
4249 tgt_dev->starget = NULL;
4250 if (tgt_dev) {
4251 scsi_tgt_priv_data->tgt_dev = NULL;
4252 scsi_tgt_priv_data->perst_id = 0;
4253 mpi3mr_tgtdev_put(tgt_dev);
4254 mpi3mr_tgtdev_put(tgt_dev);
4255 }
4256 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4257
4258 kfree(starget->hostdata);
4259 starget->hostdata = NULL;
4260}
4261
4262/**
4263 * mpi3mr_slave_configure - Slave configure callback handler
4264 * @sdev: SCSI device reference
4265 *
4266 * Configure queue depth, max hardware sectors and virt boundary
4267 * as required
4268 *
4269 * Return: 0 always.
4270 */
4271static int mpi3mr_slave_configure(struct scsi_device *sdev)
4272{
4273 struct scsi_target *starget;
4274 struct Scsi_Host *shost;
4275 struct mpi3mr_ioc *mrioc;
4276 struct mpi3mr_tgt_dev *tgt_dev = NULL;
4277 unsigned long flags;
4278 int retval = 0;
4279 struct sas_rphy *rphy = NULL;
4280
4281 starget = scsi_target(sdev);
4282 shost = dev_to_shost(&starget->dev);
4283 mrioc = shost_priv(shost);
4284
4285 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4286 if (starget->channel == mrioc->scsi_device_channel)
4287 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
4288 else if (mrioc->sas_transport_enabled && !starget->channel) {
4289 rphy = dev_to_rphy(starget->dev.parent);
4290 tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
4291 rphy->identify.sas_address, rphy);
4292 }
4293 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4294 if (!tgt_dev)
4295 return -ENXIO;
4296
4297 mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth);
4298
4299 sdev->eh_timeout = MPI3MR_EH_SCMD_TIMEOUT;
4300 blk_queue_rq_timeout(sdev->request_queue, MPI3MR_SCMD_TIMEOUT);
4301
4302 switch (tgt_dev->dev_type) {
4303 case MPI3_DEVICE_DEVFORM_PCIE:
4304 /*The block layer hw sector size = 512*/
4305 if ((tgt_dev->dev_spec.pcie_inf.dev_info &
4306 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
4307 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) {
4308 blk_queue_max_hw_sectors(sdev->request_queue,
4309 tgt_dev->dev_spec.pcie_inf.mdts / 512);
4310 if (tgt_dev->dev_spec.pcie_inf.pgsz == 0)
4311 blk_queue_virt_boundary(sdev->request_queue,
4312 ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1));
4313 else
4314 blk_queue_virt_boundary(sdev->request_queue,
4315 ((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1));
4316 }
4317 break;
4318 default:
4319 break;
4320 }
4321
4322 mpi3mr_tgtdev_put(tgt_dev);
4323
4324 return retval;
4325}
4326
4327/**
4328 * mpi3mr_slave_alloc -Slave alloc callback handler
4329 * @sdev: SCSI device reference
4330 *
4331 * Allocate per device(lun) private data and initialize it.
4332 *
4333 * Return: 0 on success -ENOMEM on memory allocation failure.
4334 */
4335static int mpi3mr_slave_alloc(struct scsi_device *sdev)
4336{
4337 struct Scsi_Host *shost;
4338 struct mpi3mr_ioc *mrioc;
4339 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
4340 struct mpi3mr_tgt_dev *tgt_dev = NULL;
4341 struct mpi3mr_sdev_priv_data *scsi_dev_priv_data;
4342 unsigned long flags;
4343 struct scsi_target *starget;
4344 int retval = 0;
4345 struct sas_rphy *rphy = NULL;
4346
4347 starget = scsi_target(sdev);
4348 shost = dev_to_shost(&starget->dev);
4349 mrioc = shost_priv(shost);
4350 scsi_tgt_priv_data = starget->hostdata;
4351
4352 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4353
4354 if (starget->channel == mrioc->scsi_device_channel)
4355 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
4356 else if (mrioc->sas_transport_enabled && !starget->channel) {
4357 rphy = dev_to_rphy(starget->dev.parent);
4358 tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
4359 rphy->identify.sas_address, rphy);
4360 }
4361
4362 if (tgt_dev) {
4363 if (tgt_dev->starget == NULL)
4364 tgt_dev->starget = starget;
4365 mpi3mr_tgtdev_put(tgt_dev);
4366 retval = 0;
4367 } else {
4368 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4369 return -ENXIO;
4370 }
4371
4372 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4373
4374 scsi_dev_priv_data = kzalloc(sizeof(*scsi_dev_priv_data), GFP_KERNEL);
4375 if (!scsi_dev_priv_data)
4376 return -ENOMEM;
4377
4378 scsi_dev_priv_data->lun_id = sdev->lun;
4379 scsi_dev_priv_data->tgt_priv_data = scsi_tgt_priv_data;
4380 sdev->hostdata = scsi_dev_priv_data;
4381
4382 scsi_tgt_priv_data->num_luns++;
4383
4384 return retval;
4385}
4386
4387/**
4388 * mpi3mr_target_alloc - Target alloc callback handler
4389 * @starget: SCSI target reference
4390 *
4391 * Allocate per target private data and initialize it.
4392 *
4393 * Return: 0 on success -ENOMEM on memory allocation failure.
4394 */
4395static int mpi3mr_target_alloc(struct scsi_target *starget)
4396{
4397 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4398 struct mpi3mr_ioc *mrioc = shost_priv(shost);
4399 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
4400 struct mpi3mr_tgt_dev *tgt_dev;
4401 unsigned long flags;
4402 int retval = 0;
4403 struct sas_rphy *rphy = NULL;
4404 bool update_stgt_priv_data = false;
4405
4406 scsi_tgt_priv_data = kzalloc(sizeof(*scsi_tgt_priv_data), GFP_KERNEL);
4407 if (!scsi_tgt_priv_data)
4408 return -ENOMEM;
4409
4410 starget->hostdata = scsi_tgt_priv_data;
4411
4412 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4413
4414 if (starget->channel == mrioc->scsi_device_channel) {
4415 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
4416 if (tgt_dev && !tgt_dev->is_hidden)
4417 update_stgt_priv_data = true;
4418 else
4419 retval = -ENXIO;
4420 } else if (mrioc->sas_transport_enabled && !starget->channel) {
4421 rphy = dev_to_rphy(starget->dev.parent);
4422 tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
4423 rphy->identify.sas_address, rphy);
4424 if (tgt_dev && !tgt_dev->is_hidden && !tgt_dev->non_stl &&
4425 (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_SAS_SATA))
4426 update_stgt_priv_data = true;
4427 else
4428 retval = -ENXIO;
4429 }
4430
4431 if (update_stgt_priv_data) {
4432 scsi_tgt_priv_data->starget = starget;
4433 scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle;
4434 scsi_tgt_priv_data->perst_id = tgt_dev->perst_id;
4435 scsi_tgt_priv_data->dev_type = tgt_dev->dev_type;
4436 scsi_tgt_priv_data->tgt_dev = tgt_dev;
4437 tgt_dev->starget = starget;
4438 atomic_set(&scsi_tgt_priv_data->block_io, 0);
4439 retval = 0;
4440 scsi_tgt_priv_data->io_throttle_enabled =
4441 tgt_dev->io_throttle_enabled;
4442 if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_VD)
4443 scsi_tgt_priv_data->throttle_group =
4444 tgt_dev->dev_spec.vd_inf.tg;
4445 }
4446 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4447
4448 return retval;
4449}
4450
4451/**
4452 * mpi3mr_check_return_unmap - Whether an unmap is allowed
4453 * @mrioc: Adapter instance reference
4454 * @scmd: SCSI Command reference
4455 *
4456 * The controller hardware cannot handle certain unmap commands
4457 * for NVMe drives, this routine checks those and return true
4458 * and completes the SCSI command with proper status and sense
4459 * data.
4460 *
4461 * Return: TRUE for not allowed unmap, FALSE otherwise.
4462 */
4463static bool mpi3mr_check_return_unmap(struct mpi3mr_ioc *mrioc,
4464 struct scsi_cmnd *scmd)
4465{
4466 unsigned char *buf;
4467 u16 param_len, desc_len, trunc_param_len;
4468
4469 trunc_param_len = param_len = get_unaligned_be16(scmd->cmnd + 7);
4470
4471 if (mrioc->pdev->revision) {
4472 if ((param_len > 24) && ((param_len - 8) & 0xF)) {
4473 trunc_param_len -= (param_len - 8) & 0xF;
4474 dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR);
4475 dprint_scsi_err(mrioc,
4476 "truncating param_len from (%d) to (%d)\n",
4477 param_len, trunc_param_len);
4478 put_unaligned_be16(trunc_param_len, scmd->cmnd + 7);
4479 dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR);
4480 }
4481 return false;
4482 }
4483
4484 if (!param_len) {
4485 ioc_warn(mrioc,
4486 "%s: cdb received with zero parameter length\n",
4487 __func__);
4488 scsi_print_command(scmd);
4489 scmd->result = DID_OK << 16;
4490 scsi_done(scmd);
4491 return true;
4492 }
4493
4494 if (param_len < 24) {
4495 ioc_warn(mrioc,
4496 "%s: cdb received with invalid param_len: %d\n",
4497 __func__, param_len);
4498 scsi_print_command(scmd);
4499 scmd->result = SAM_STAT_CHECK_CONDITION;
4500 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
4501 0x1A, 0);
4502 scsi_done(scmd);
4503 return true;
4504 }
4505 if (param_len != scsi_bufflen(scmd)) {
4506 ioc_warn(mrioc,
4507 "%s: cdb received with param_len: %d bufflen: %d\n",
4508 __func__, param_len, scsi_bufflen(scmd));
4509 scsi_print_command(scmd);
4510 scmd->result = SAM_STAT_CHECK_CONDITION;
4511 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
4512 0x1A, 0);
4513 scsi_done(scmd);
4514 return true;
4515 }
4516 buf = kzalloc(scsi_bufflen(scmd), GFP_ATOMIC);
4517 if (!buf) {
4518 scsi_print_command(scmd);
4519 scmd->result = SAM_STAT_CHECK_CONDITION;
4520 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
4521 0x55, 0x03);
4522 scsi_done(scmd);
4523 return true;
4524 }
4525 scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd));
4526 desc_len = get_unaligned_be16(&buf[2]);
4527
4528 if (desc_len < 16) {
4529 ioc_warn(mrioc,
4530 "%s: Invalid descriptor length in param list: %d\n",
4531 __func__, desc_len);
4532 scsi_print_command(scmd);
4533 scmd->result = SAM_STAT_CHECK_CONDITION;
4534 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
4535 0x26, 0);
4536 scsi_done(scmd);
4537 kfree(buf);
4538 return true;
4539 }
4540
4541 if (param_len > (desc_len + 8)) {
4542 trunc_param_len = desc_len + 8;
4543 scsi_print_command(scmd);
4544 dprint_scsi_err(mrioc,
4545 "truncating param_len(%d) to desc_len+8(%d)\n",
4546 param_len, trunc_param_len);
4547 put_unaligned_be16(trunc_param_len, scmd->cmnd + 7);
4548 scsi_print_command(scmd);
4549 }
4550
4551 kfree(buf);
4552 return false;
4553}
4554
4555/**
4556 * mpi3mr_allow_scmd_to_fw - Command is allowed during shutdown
4557 * @scmd: SCSI Command reference
4558 *
4559 * Checks whether a cdb is allowed during shutdown or not.
4560 *
4561 * Return: TRUE for allowed commands, FALSE otherwise.
4562 */
4563
4564inline bool mpi3mr_allow_scmd_to_fw(struct scsi_cmnd *scmd)
4565{
4566 switch (scmd->cmnd[0]) {
4567 case SYNCHRONIZE_CACHE:
4568 case START_STOP:
4569 return true;
4570 default:
4571 return false;
4572 }
4573}
4574
4575/**
4576 * mpi3mr_qcmd - I/O request despatcher
4577 * @shost: SCSI Host reference
4578 * @scmd: SCSI Command reference
4579 *
4580 * Issues the SCSI Command as an MPI3 request.
4581 *
4582 * Return: 0 on successful queueing of the request or if the
4583 * request is completed with failure.
4584 * SCSI_MLQUEUE_DEVICE_BUSY when the device is busy.
4585 * SCSI_MLQUEUE_HOST_BUSY when the host queue is full.
4586 */
4587static int mpi3mr_qcmd(struct Scsi_Host *shost,
4588 struct scsi_cmnd *scmd)
4589{
4590 struct mpi3mr_ioc *mrioc = shost_priv(shost);
4591 struct mpi3mr_stgt_priv_data *stgt_priv_data;
4592 struct mpi3mr_sdev_priv_data *sdev_priv_data;
4593 struct scmd_priv *scmd_priv_data = NULL;
4594 struct mpi3_scsi_io_request *scsiio_req = NULL;
4595 struct op_req_qinfo *op_req_q = NULL;
4596 int retval = 0;
4597 u16 dev_handle;
4598 u16 host_tag;
4599 u32 scsiio_flags = 0, data_len_blks = 0;
4600 struct request *rq = scsi_cmd_to_rq(scmd);
4601 int iprio_class;
4602 u8 is_pcie_dev = 0;
4603 u32 tracked_io_sz = 0;
4604 u32 ioc_pend_data_len = 0, tg_pend_data_len = 0;
4605 struct mpi3mr_throttle_group_info *tg = NULL;
4606
4607 if (mrioc->unrecoverable) {
4608 scmd->result = DID_ERROR << 16;
4609 scsi_done(scmd);
4610 goto out;
4611 }
4612
4613 sdev_priv_data = scmd->device->hostdata;
4614 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
4615 scmd->result = DID_NO_CONNECT << 16;
4616 scsi_done(scmd);
4617 goto out;
4618 }
4619
4620 if (mrioc->stop_drv_processing &&
4621 !(mpi3mr_allow_scmd_to_fw(scmd))) {
4622 scmd->result = DID_NO_CONNECT << 16;
4623 scsi_done(scmd);
4624 goto out;
4625 }
4626
4627 if (mrioc->reset_in_progress) {
4628 retval = SCSI_MLQUEUE_HOST_BUSY;
4629 goto out;
4630 }
4631
4632 stgt_priv_data = sdev_priv_data->tgt_priv_data;
4633
4634 if (atomic_read(&stgt_priv_data->block_io)) {
4635 if (mrioc->stop_drv_processing) {
4636 scmd->result = DID_NO_CONNECT << 16;
4637 scsi_done(scmd);
4638 goto out;
4639 }
4640 retval = SCSI_MLQUEUE_DEVICE_BUSY;
4641 goto out;
4642 }
4643
4644 dev_handle = stgt_priv_data->dev_handle;
4645 if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) {
4646 scmd->result = DID_NO_CONNECT << 16;
4647 scsi_done(scmd);
4648 goto out;
4649 }
4650 if (stgt_priv_data->dev_removed) {
4651 scmd->result = DID_NO_CONNECT << 16;
4652 scsi_done(scmd);
4653 goto out;
4654 }
4655
4656 if (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE)
4657 is_pcie_dev = 1;
4658 if ((scmd->cmnd[0] == UNMAP) && is_pcie_dev &&
4659 (mrioc->pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) &&
4660 mpi3mr_check_return_unmap(mrioc, scmd))
4661 goto out;
4662
4663 host_tag = mpi3mr_host_tag_for_scmd(mrioc, scmd);
4664 if (host_tag == MPI3MR_HOSTTAG_INVALID) {
4665 scmd->result = DID_ERROR << 16;
4666 scsi_done(scmd);
4667 goto out;
4668 }
4669
4670 if (scmd->sc_data_direction == DMA_FROM_DEVICE)
4671 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_READ;
4672 else if (scmd->sc_data_direction == DMA_TO_DEVICE)
4673 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_WRITE;
4674 else
4675 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_NO_DATA_TRANSFER;
4676
4677 scsiio_flags |= MPI3_SCSIIO_FLAGS_TASKATTRIBUTE_SIMPLEQ;
4678
4679 if (sdev_priv_data->ncq_prio_enable) {
4680 iprio_class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
4681 if (iprio_class == IOPRIO_CLASS_RT)
4682 scsiio_flags |= 1 << MPI3_SCSIIO_FLAGS_CMDPRI_SHIFT;
4683 }
4684
4685 if (scmd->cmd_len > 16)
4686 scsiio_flags |= MPI3_SCSIIO_FLAGS_CDB_GREATER_THAN_16;
4687
4688 scmd_priv_data = scsi_cmd_priv(scmd);
4689 memset(scmd_priv_data->mpi3mr_scsiio_req, 0, MPI3MR_ADMIN_REQ_FRAME_SZ);
4690 scsiio_req = (struct mpi3_scsi_io_request *)scmd_priv_data->mpi3mr_scsiio_req;
4691 scsiio_req->function = MPI3_FUNCTION_SCSI_IO;
4692 scsiio_req->host_tag = cpu_to_le16(host_tag);
4693
4694 mpi3mr_setup_eedp(mrioc, scmd, scsiio_req);
4695
4696 memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len);
4697 scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd));
4698 scsiio_req->dev_handle = cpu_to_le16(dev_handle);
4699 scsiio_req->flags = cpu_to_le32(scsiio_flags);
4700 int_to_scsilun(sdev_priv_data->lun_id,
4701 (struct scsi_lun *)scsiio_req->lun);
4702
4703 if (mpi3mr_build_sg_scmd(mrioc, scmd, scsiio_req)) {
4704 mpi3mr_clear_scmd_priv(mrioc, scmd);
4705 retval = SCSI_MLQUEUE_HOST_BUSY;
4706 goto out;
4707 }
4708 op_req_q = &mrioc->req_qinfo[scmd_priv_data->req_q_idx];
4709 data_len_blks = scsi_bufflen(scmd) >> 9;
4710 if ((data_len_blks >= mrioc->io_throttle_data_length) &&
4711 stgt_priv_data->io_throttle_enabled) {
4712 tracked_io_sz = data_len_blks;
4713 tg = stgt_priv_data->throttle_group;
4714 if (tg) {
4715 ioc_pend_data_len = atomic_add_return(data_len_blks,
4716 &mrioc->pend_large_data_sz);
4717 tg_pend_data_len = atomic_add_return(data_len_blks,
4718 &tg->pend_large_data_sz);
4719 if (!tg->io_divert && ((ioc_pend_data_len >=
4720 mrioc->io_throttle_high) ||
4721 (tg_pend_data_len >= tg->high))) {
4722 tg->io_divert = 1;
4723 tg->need_qd_reduction = 1;
4724 mpi3mr_set_io_divert_for_all_vd_in_tg(mrioc,
4725 tg, 1);
4726 mpi3mr_queue_qd_reduction_event(mrioc, tg);
4727 }
4728 } else {
4729 ioc_pend_data_len = atomic_add_return(data_len_blks,
4730 &mrioc->pend_large_data_sz);
4731 if (ioc_pend_data_len >= mrioc->io_throttle_high)
4732 stgt_priv_data->io_divert = 1;
4733 }
4734 }
4735
4736 if (stgt_priv_data->io_divert) {
4737 scsiio_req->msg_flags |=
4738 MPI3_SCSIIO_MSGFLAGS_DIVERT_TO_FIRMWARE;
4739 scsiio_flags |= MPI3_SCSIIO_FLAGS_DIVERT_REASON_IO_THROTTLING;
4740 }
4741 scsiio_req->flags = cpu_to_le32(scsiio_flags);
4742
4743 if (mpi3mr_op_request_post(mrioc, op_req_q,
4744 scmd_priv_data->mpi3mr_scsiio_req)) {
4745 mpi3mr_clear_scmd_priv(mrioc, scmd);
4746 retval = SCSI_MLQUEUE_HOST_BUSY;
4747 if (tracked_io_sz) {
4748 atomic_sub(tracked_io_sz, &mrioc->pend_large_data_sz);
4749 if (tg)
4750 atomic_sub(tracked_io_sz,
4751 &tg->pend_large_data_sz);
4752 }
4753 goto out;
4754 }
4755
4756out:
4757 return retval;
4758}
4759
4760static struct scsi_host_template mpi3mr_driver_template = {
4761 .module = THIS_MODULE,
4762 .name = "MPI3 Storage Controller",
4763 .proc_name = MPI3MR_DRIVER_NAME,
4764 .queuecommand = mpi3mr_qcmd,
4765 .target_alloc = mpi3mr_target_alloc,
4766 .slave_alloc = mpi3mr_slave_alloc,
4767 .slave_configure = mpi3mr_slave_configure,
4768 .target_destroy = mpi3mr_target_destroy,
4769 .slave_destroy = mpi3mr_slave_destroy,
4770 .scan_finished = mpi3mr_scan_finished,
4771 .scan_start = mpi3mr_scan_start,
4772 .change_queue_depth = mpi3mr_change_queue_depth,
4773 .eh_device_reset_handler = mpi3mr_eh_dev_reset,
4774 .eh_target_reset_handler = mpi3mr_eh_target_reset,
4775 .eh_host_reset_handler = mpi3mr_eh_host_reset,
4776 .bios_param = mpi3mr_bios_param,
4777 .map_queues = mpi3mr_map_queues,
4778 .mq_poll = mpi3mr_blk_mq_poll,
4779 .no_write_same = 1,
4780 .can_queue = 1,
4781 .this_id = -1,
4782 .sg_tablesize = MPI3MR_SG_DEPTH,
4783 /* max xfer supported is 1M (2K in 512 byte sized sectors)
4784 */
4785 .max_sectors = 2048,
4786 .cmd_per_lun = MPI3MR_MAX_CMDS_LUN,
4787 .max_segment_size = 0xffffffff,
4788 .track_queue_depth = 1,
4789 .cmd_size = sizeof(struct scmd_priv),
4790 .shost_groups = mpi3mr_host_groups,
4791 .sdev_groups = mpi3mr_dev_groups,
4792};
4793
4794/**
4795 * mpi3mr_init_drv_cmd - Initialize internal command tracker
4796 * @cmdptr: Internal command tracker
4797 * @host_tag: Host tag used for the specific command
4798 *
4799 * Initialize the internal command tracker structure with
4800 * specified host tag.
4801 *
4802 * Return: Nothing.
4803 */
4804static inline void mpi3mr_init_drv_cmd(struct mpi3mr_drv_cmd *cmdptr,
4805 u16 host_tag)
4806{
4807 mutex_init(&cmdptr->mutex);
4808 cmdptr->reply = NULL;
4809 cmdptr->state = MPI3MR_CMD_NOTUSED;
4810 cmdptr->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
4811 cmdptr->host_tag = host_tag;
4812}
4813
4814/**
4815 * osintfc_mrioc_security_status -Check controller secure status
4816 * @pdev: PCI device instance
4817 *
4818 * Read the Device Serial Number capability from PCI config
4819 * space and decide whether the controller is secure or not.
4820 *
4821 * Return: 0 on success, non-zero on failure.
4822 */
4823static int
4824osintfc_mrioc_security_status(struct pci_dev *pdev)
4825{
4826 u32 cap_data;
4827 int base;
4828 u32 ctlr_status;
4829 u32 debug_status;
4830 int retval = 0;
4831
4832 base = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DSN);
4833 if (!base) {
4834 dev_err(&pdev->dev,
4835 "%s: PCI_EXT_CAP_ID_DSN is not supported\n", __func__);
4836 return -1;
4837 }
4838
4839 pci_read_config_dword(pdev, base + 4, &cap_data);
4840
4841 debug_status = cap_data & MPI3MR_CTLR_SECURE_DBG_STATUS_MASK;
4842 ctlr_status = cap_data & MPI3MR_CTLR_SECURITY_STATUS_MASK;
4843
4844 switch (ctlr_status) {
4845 case MPI3MR_INVALID_DEVICE:
4846 dev_err(&pdev->dev,
4847 "%s: Non secure ctlr (Invalid) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
4848 __func__, pdev->device, pdev->subsystem_vendor,
4849 pdev->subsystem_device);
4850 retval = -1;
4851 break;
4852 case MPI3MR_CONFIG_SECURE_DEVICE:
4853 if (!debug_status)
4854 dev_info(&pdev->dev,
4855 "%s: Config secure ctlr is detected\n",
4856 __func__);
4857 break;
4858 case MPI3MR_HARD_SECURE_DEVICE:
4859 break;
4860 case MPI3MR_TAMPERED_DEVICE:
4861 dev_err(&pdev->dev,
4862 "%s: Non secure ctlr (Tampered) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
4863 __func__, pdev->device, pdev->subsystem_vendor,
4864 pdev->subsystem_device);
4865 retval = -1;
4866 break;
4867 default:
4868 retval = -1;
4869 break;
4870 }
4871
4872 if (!retval && debug_status) {
4873 dev_err(&pdev->dev,
4874 "%s: Non secure ctlr (Secure Dbg) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
4875 __func__, pdev->device, pdev->subsystem_vendor,
4876 pdev->subsystem_device);
4877 retval = -1;
4878 }
4879
4880 return retval;
4881}
4882
4883/**
4884 * mpi3mr_probe - PCI probe callback
4885 * @pdev: PCI device instance
4886 * @id: PCI device ID details
4887 *
4888 * controller initialization routine. Checks the security status
4889 * of the controller and if it is invalid or tampered return the
4890 * probe without initializing the controller. Otherwise,
4891 * allocate per adapter instance through shost_priv and
4892 * initialize controller specific data structures, initializae
4893 * the controller hardware, add shost to the SCSI subsystem.
4894 *
4895 * Return: 0 on success, non-zero on failure.
4896 */
4897
4898static int
4899mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4900{
4901 struct mpi3mr_ioc *mrioc = NULL;
4902 struct Scsi_Host *shost = NULL;
4903 int retval = 0, i;
4904
4905 if (osintfc_mrioc_security_status(pdev)) {
4906 warn_non_secure_ctlr = 1;
4907 return 1; /* For Invalid and Tampered device */
4908 }
4909
4910 shost = scsi_host_alloc(&mpi3mr_driver_template,
4911 sizeof(struct mpi3mr_ioc));
4912 if (!shost) {
4913 retval = -ENODEV;
4914 goto shost_failed;
4915 }
4916
4917 mrioc = shost_priv(shost);
4918 mrioc->id = mrioc_ids++;
4919 sprintf(mrioc->driver_name, "%s", MPI3MR_DRIVER_NAME);
4920 sprintf(mrioc->name, "%s%d", mrioc->driver_name, mrioc->id);
4921 INIT_LIST_HEAD(&mrioc->list);
4922 spin_lock(&mrioc_list_lock);
4923 list_add_tail(&mrioc->list, &mrioc_list);
4924 spin_unlock(&mrioc_list_lock);
4925
4926 spin_lock_init(&mrioc->admin_req_lock);
4927 spin_lock_init(&mrioc->reply_free_queue_lock);
4928 spin_lock_init(&mrioc->sbq_lock);
4929 spin_lock_init(&mrioc->fwevt_lock);
4930 spin_lock_init(&mrioc->tgtdev_lock);
4931 spin_lock_init(&mrioc->watchdog_lock);
4932 spin_lock_init(&mrioc->chain_buf_lock);
4933 spin_lock_init(&mrioc->sas_node_lock);
4934
4935 INIT_LIST_HEAD(&mrioc->fwevt_list);
4936 INIT_LIST_HEAD(&mrioc->tgtdev_list);
4937 INIT_LIST_HEAD(&mrioc->delayed_rmhs_list);
4938 INIT_LIST_HEAD(&mrioc->delayed_evtack_cmds_list);
4939 INIT_LIST_HEAD(&mrioc->sas_expander_list);
4940 INIT_LIST_HEAD(&mrioc->hba_port_table_list);
4941 INIT_LIST_HEAD(&mrioc->enclosure_list);
4942
4943 mutex_init(&mrioc->reset_mutex);
4944 mpi3mr_init_drv_cmd(&mrioc->init_cmds, MPI3MR_HOSTTAG_INITCMDS);
4945 mpi3mr_init_drv_cmd(&mrioc->host_tm_cmds, MPI3MR_HOSTTAG_BLK_TMS);
4946 mpi3mr_init_drv_cmd(&mrioc->bsg_cmds, MPI3MR_HOSTTAG_BSG_CMDS);
4947 mpi3mr_init_drv_cmd(&mrioc->cfg_cmds, MPI3MR_HOSTTAG_CFG_CMDS);
4948 mpi3mr_init_drv_cmd(&mrioc->transport_cmds,
4949 MPI3MR_HOSTTAG_TRANSPORT_CMDS);
4950
4951 for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++)
4952 mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i],
4953 MPI3MR_HOSTTAG_DEVRMCMD_MIN + i);
4954
4955 if (pdev->revision)
4956 mrioc->enable_segqueue = true;
4957
4958 init_waitqueue_head(&mrioc->reset_waitq);
4959 mrioc->logging_level = logging_level;
4960 mrioc->shost = shost;
4961 mrioc->pdev = pdev;
4962 mrioc->stop_bsgs = 1;
4963
4964 /* init shost parameters */
4965 shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH;
4966 shost->max_lun = -1;
4967 shost->unique_id = mrioc->id;
4968
4969 shost->max_channel = 0;
4970 shost->max_id = 0xFFFFFFFF;
4971
4972 shost->host_tagset = 1;
4973
4974 if (prot_mask >= 0)
4975 scsi_host_set_prot(shost, prot_mask);
4976 else {
4977 prot_mask = SHOST_DIF_TYPE1_PROTECTION
4978 | SHOST_DIF_TYPE2_PROTECTION
4979 | SHOST_DIF_TYPE3_PROTECTION;
4980 scsi_host_set_prot(shost, prot_mask);
4981 }
4982
4983 ioc_info(mrioc,
4984 "%s :host protection capabilities enabled %s%s%s%s%s%s%s\n",
4985 __func__,
4986 (prot_mask & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "",
4987 (prot_mask & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "",
4988 (prot_mask & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "",
4989 (prot_mask & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "",
4990 (prot_mask & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "",
4991 (prot_mask & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "",
4992 (prot_mask & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : "");
4993
4994 if (prot_guard_mask)
4995 scsi_host_set_guard(shost, (prot_guard_mask & 3));
4996 else
4997 scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
4998
4999 snprintf(mrioc->fwevt_worker_name, sizeof(mrioc->fwevt_worker_name),
5000 "%s%d_fwevt_wrkr", mrioc->driver_name, mrioc->id);
5001 mrioc->fwevt_worker_thread = alloc_ordered_workqueue(
5002 mrioc->fwevt_worker_name, 0);
5003 if (!mrioc->fwevt_worker_thread) {
5004 ioc_err(mrioc, "failure at %s:%d/%s()!\n",
5005 __FILE__, __LINE__, __func__);
5006 retval = -ENODEV;
5007 goto fwevtthread_failed;
5008 }
5009
5010 mrioc->is_driver_loading = 1;
5011 mrioc->cpu_count = num_online_cpus();
5012 if (mpi3mr_setup_resources(mrioc)) {
5013 ioc_err(mrioc, "setup resources failed\n");
5014 retval = -ENODEV;
5015 goto resource_alloc_failed;
5016 }
5017 if (mpi3mr_init_ioc(mrioc)) {
5018 ioc_err(mrioc, "initializing IOC failed\n");
5019 retval = -ENODEV;
5020 goto init_ioc_failed;
5021 }
5022
5023 shost->nr_hw_queues = mrioc->num_op_reply_q;
5024 if (mrioc->active_poll_qcount)
5025 shost->nr_maps = 3;
5026
5027 shost->can_queue = mrioc->max_host_ios;
5028 shost->sg_tablesize = MPI3MR_SG_DEPTH;
5029 shost->max_id = mrioc->facts.max_perids + 1;
5030
5031 retval = scsi_add_host(shost, &pdev->dev);
5032 if (retval) {
5033 ioc_err(mrioc, "failure at %s:%d/%s()!\n",
5034 __FILE__, __LINE__, __func__);
5035 goto addhost_failed;
5036 }
5037
5038 scsi_scan_host(shost);
5039 mpi3mr_bsg_init(mrioc);
5040 return retval;
5041
5042addhost_failed:
5043 mpi3mr_stop_watchdog(mrioc);
5044 mpi3mr_cleanup_ioc(mrioc);
5045init_ioc_failed:
5046 mpi3mr_free_mem(mrioc);
5047 mpi3mr_cleanup_resources(mrioc);
5048resource_alloc_failed:
5049 destroy_workqueue(mrioc->fwevt_worker_thread);
5050fwevtthread_failed:
5051 spin_lock(&mrioc_list_lock);
5052 list_del(&mrioc->list);
5053 spin_unlock(&mrioc_list_lock);
5054 scsi_host_put(shost);
5055shost_failed:
5056 return retval;
5057}
5058
5059/**
5060 * mpi3mr_remove - PCI remove callback
5061 * @pdev: PCI device instance
5062 *
5063 * Cleanup the IOC by issuing MUR and shutdown notification.
5064 * Free up all memory and resources associated with the
5065 * controllerand target devices, unregister the shost.
5066 *
5067 * Return: Nothing.
5068 */
5069static void mpi3mr_remove(struct pci_dev *pdev)
5070{
5071 struct Scsi_Host *shost = pci_get_drvdata(pdev);
5072 struct mpi3mr_ioc *mrioc;
5073 struct workqueue_struct *wq;
5074 unsigned long flags;
5075 struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
5076
5077 if (!shost)
5078 return;
5079
5080 mrioc = shost_priv(shost);
5081 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
5082 ssleep(1);
5083
5084 if (!pci_device_is_present(mrioc->pdev)) {
5085 mrioc->unrecoverable = 1;
5086 mpi3mr_flush_cmds_for_unrecovered_controller(mrioc);
5087 }
5088
5089 mpi3mr_bsg_exit(mrioc);
5090 mrioc->stop_drv_processing = 1;
5091 mpi3mr_cleanup_fwevt_list(mrioc);
5092 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
5093 wq = mrioc->fwevt_worker_thread;
5094 mrioc->fwevt_worker_thread = NULL;
5095 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
5096 if (wq)
5097 destroy_workqueue(wq);
5098
5099 if (mrioc->sas_transport_enabled)
5100 sas_remove_host(shost);
5101 else
5102 scsi_remove_host(shost);
5103
5104 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
5105 list) {
5106 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
5107 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev);
5108 mpi3mr_tgtdev_put(tgtdev);
5109 }
5110 mpi3mr_stop_watchdog(mrioc);
5111 mpi3mr_cleanup_ioc(mrioc);
5112 mpi3mr_free_mem(mrioc);
5113 mpi3mr_cleanup_resources(mrioc);
5114
5115 spin_lock(&mrioc_list_lock);
5116 list_del(&mrioc->list);
5117 spin_unlock(&mrioc_list_lock);
5118
5119 scsi_host_put(shost);
5120}
5121
5122/**
5123 * mpi3mr_shutdown - PCI shutdown callback
5124 * @pdev: PCI device instance
5125 *
5126 * Free up all memory and resources associated with the
5127 * controller
5128 *
5129 * Return: Nothing.
5130 */
5131static void mpi3mr_shutdown(struct pci_dev *pdev)
5132{
5133 struct Scsi_Host *shost = pci_get_drvdata(pdev);
5134 struct mpi3mr_ioc *mrioc;
5135 struct workqueue_struct *wq;
5136 unsigned long flags;
5137
5138 if (!shost)
5139 return;
5140
5141 mrioc = shost_priv(shost);
5142 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
5143 ssleep(1);
5144
5145 mrioc->stop_drv_processing = 1;
5146 mpi3mr_cleanup_fwevt_list(mrioc);
5147 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
5148 wq = mrioc->fwevt_worker_thread;
5149 mrioc->fwevt_worker_thread = NULL;
5150 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
5151 if (wq)
5152 destroy_workqueue(wq);
5153
5154 mpi3mr_stop_watchdog(mrioc);
5155 mpi3mr_cleanup_ioc(mrioc);
5156 mpi3mr_cleanup_resources(mrioc);
5157}
5158
5159/**
5160 * mpi3mr_suspend - PCI power management suspend callback
5161 * @dev: Device struct
5162 *
5163 * Change the power state to the given value and cleanup the IOC
5164 * by issuing MUR and shutdown notification
5165 *
5166 * Return: 0 always.
5167 */
5168static int __maybe_unused
5169mpi3mr_suspend(struct device *dev)
5170{
5171 struct pci_dev *pdev = to_pci_dev(dev);
5172 struct Scsi_Host *shost = pci_get_drvdata(pdev);
5173 struct mpi3mr_ioc *mrioc;
5174
5175 if (!shost)
5176 return 0;
5177
5178 mrioc = shost_priv(shost);
5179 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
5180 ssleep(1);
5181 mrioc->stop_drv_processing = 1;
5182 mpi3mr_cleanup_fwevt_list(mrioc);
5183 scsi_block_requests(shost);
5184 mpi3mr_stop_watchdog(mrioc);
5185 mpi3mr_cleanup_ioc(mrioc);
5186
5187 ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state\n",
5188 pdev, pci_name(pdev));
5189 mpi3mr_cleanup_resources(mrioc);
5190
5191 return 0;
5192}
5193
5194/**
5195 * mpi3mr_resume - PCI power management resume callback
5196 * @dev: Device struct
5197 *
5198 * Restore the power state to D0 and reinitialize the controller
5199 * and resume I/O operations to the target devices
5200 *
5201 * Return: 0 on success, non-zero on failure
5202 */
5203static int __maybe_unused
5204mpi3mr_resume(struct device *dev)
5205{
5206 struct pci_dev *pdev = to_pci_dev(dev);
5207 struct Scsi_Host *shost = pci_get_drvdata(pdev);
5208 struct mpi3mr_ioc *mrioc;
5209 pci_power_t device_state = pdev->current_state;
5210 int r;
5211
5212 if (!shost)
5213 return 0;
5214
5215 mrioc = shost_priv(shost);
5216
5217 ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
5218 pdev, pci_name(pdev), device_state);
5219 mrioc->pdev = pdev;
5220 mrioc->cpu_count = num_online_cpus();
5221 r = mpi3mr_setup_resources(mrioc);
5222 if (r) {
5223 ioc_info(mrioc, "%s: Setup resources failed[%d]\n",
5224 __func__, r);
5225 return r;
5226 }
5227
5228 mrioc->stop_drv_processing = 0;
5229 mpi3mr_invalidate_devhandles(mrioc);
5230 mpi3mr_free_enclosure_list(mrioc);
5231 mpi3mr_memset_buffers(mrioc);
5232 r = mpi3mr_reinit_ioc(mrioc, 1);
5233 if (r) {
5234 ioc_err(mrioc, "resuming controller failed[%d]\n", r);
5235 return r;
5236 }
5237 ssleep(MPI3MR_RESET_TOPOLOGY_SETTLE_TIME);
5238 scsi_unblock_requests(shost);
5239 mrioc->device_refresh_on = 0;
5240 mpi3mr_start_watchdog(mrioc);
5241
5242 return 0;
5243}
5244
5245static const struct pci_device_id mpi3mr_pci_id_table[] = {
5246 {
5247 PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM,
5248 MPI3_MFGPAGE_DEVID_SAS4116, PCI_ANY_ID, PCI_ANY_ID)
5249 },
5250 { 0 }
5251};
5252MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table);
5253
5254static SIMPLE_DEV_PM_OPS(mpi3mr_pm_ops, mpi3mr_suspend, mpi3mr_resume);
5255
5256static struct pci_driver mpi3mr_pci_driver = {
5257 .name = MPI3MR_DRIVER_NAME,
5258 .id_table = mpi3mr_pci_id_table,
5259 .probe = mpi3mr_probe,
5260 .remove = mpi3mr_remove,
5261 .shutdown = mpi3mr_shutdown,
5262 .driver.pm = &mpi3mr_pm_ops,
5263};
5264
5265static ssize_t event_counter_show(struct device_driver *dd, char *buf)
5266{
5267 return sprintf(buf, "%llu\n", atomic64_read(&event_counter));
5268}
5269static DRIVER_ATTR_RO(event_counter);
5270
5271static int __init mpi3mr_init(void)
5272{
5273 int ret_val;
5274
5275 pr_info("Loading %s version %s\n", MPI3MR_DRIVER_NAME,
5276 MPI3MR_DRIVER_VERSION);
5277
5278 mpi3mr_transport_template =
5279 sas_attach_transport(&mpi3mr_transport_functions);
5280 if (!mpi3mr_transport_template) {
5281 pr_err("%s failed to load due to sas transport attach failure\n",
5282 MPI3MR_DRIVER_NAME);
5283 return -ENODEV;
5284 }
5285
5286 ret_val = pci_register_driver(&mpi3mr_pci_driver);
5287 if (ret_val) {
5288 pr_err("%s failed to load due to pci register driver failure\n",
5289 MPI3MR_DRIVER_NAME);
5290 goto err_pci_reg_fail;
5291 }
5292
5293 ret_val = driver_create_file(&mpi3mr_pci_driver.driver,
5294 &driver_attr_event_counter);
5295 if (ret_val)
5296 goto err_event_counter;
5297
5298 return ret_val;
5299
5300err_event_counter:
5301 pci_unregister_driver(&mpi3mr_pci_driver);
5302
5303err_pci_reg_fail:
5304 sas_release_transport(mpi3mr_transport_template);
5305 return ret_val;
5306}
5307
5308static void __exit mpi3mr_exit(void)
5309{
5310 if (warn_non_secure_ctlr)
5311 pr_warn(
5312 "Unloading %s version %s while managing a non secure controller\n",
5313 MPI3MR_DRIVER_NAME, MPI3MR_DRIVER_VERSION);
5314 else
5315 pr_info("Unloading %s version %s\n", MPI3MR_DRIVER_NAME,
5316 MPI3MR_DRIVER_VERSION);
5317
5318 driver_remove_file(&mpi3mr_pci_driver.driver,
5319 &driver_attr_event_counter);
5320 pci_unregister_driver(&mpi3mr_pci_driver);
5321 sas_release_transport(mpi3mr_transport_template);
5322}
5323
5324module_init(mpi3mr_init);
5325module_exit(mpi3mr_exit);