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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Driver for Broadcom MPI3 Storage Controllers
4 *
5 * Copyright (C) 2017-2023 Broadcom Inc.
6 * (mailto: mpi3mr-linuxdrv.pdl@broadcom.com)
7 *
8 */
9
10#include "mpi3mr.h"
11#include <linux/idr.h>
12
13/* global driver scop variables */
14LIST_HEAD(mrioc_list);
15DEFINE_SPINLOCK(mrioc_list_lock);
16static DEFINE_IDA(mrioc_ida);
17static int warn_non_secure_ctlr;
18atomic64_t event_counter;
19
20MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR);
21MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC);
22MODULE_LICENSE(MPI3MR_DRIVER_LICENSE);
23MODULE_VERSION(MPI3MR_DRIVER_VERSION);
24
25/* Module parameters*/
26int prot_mask = -1;
27module_param(prot_mask, int, 0);
28MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07");
29
30static int prot_guard_mask = 3;
31module_param(prot_guard_mask, int, 0);
32MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3");
33static int logging_level;
34module_param(logging_level, int, 0);
35MODULE_PARM_DESC(logging_level,
36 " bits for enabling additional logging info (default=0)");
37static int max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES;
38module_param(max_sgl_entries, int, 0444);
39MODULE_PARM_DESC(max_sgl_entries,
40 "Preferred max number of SG entries to be used for a single I/O\n"
41 "The actual value will be determined by the driver\n"
42 "(Minimum=256, Maximum=2048, default=256)");
43
44/* Forward declarations*/
45static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event,
46 struct mpi3mr_drv_cmd *cmdparam, u32 event_ctx);
47
48#define MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION (0xFFFF)
49
50#define MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH (0xFFFE)
51
52/**
53 * mpi3mr_host_tag_for_scmd - Get host tag for a scmd
54 * @mrioc: Adapter instance reference
55 * @scmd: SCSI command reference
56 *
57 * Calculate the host tag based on block tag for a given scmd.
58 *
59 * Return: Valid host tag or MPI3MR_HOSTTAG_INVALID.
60 */
61static u16 mpi3mr_host_tag_for_scmd(struct mpi3mr_ioc *mrioc,
62 struct scsi_cmnd *scmd)
63{
64 struct scmd_priv *priv = NULL;
65 u32 unique_tag;
66 u16 host_tag, hw_queue;
67
68 unique_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
69
70 hw_queue = blk_mq_unique_tag_to_hwq(unique_tag);
71 if (hw_queue >= mrioc->num_op_reply_q)
72 return MPI3MR_HOSTTAG_INVALID;
73 host_tag = blk_mq_unique_tag_to_tag(unique_tag);
74
75 if (WARN_ON(host_tag >= mrioc->max_host_ios))
76 return MPI3MR_HOSTTAG_INVALID;
77
78 priv = scsi_cmd_priv(scmd);
79 /*host_tag 0 is invalid hence incrementing by 1*/
80 priv->host_tag = host_tag + 1;
81 priv->scmd = scmd;
82 priv->in_lld_scope = 1;
83 priv->req_q_idx = hw_queue;
84 priv->meta_chain_idx = -1;
85 priv->chain_idx = -1;
86 priv->meta_sg_valid = 0;
87 return priv->host_tag;
88}
89
90/**
91 * mpi3mr_scmd_from_host_tag - Get SCSI command from host tag
92 * @mrioc: Adapter instance reference
93 * @host_tag: Host tag
94 * @qidx: Operational queue index
95 *
96 * Identify the block tag from the host tag and queue index and
97 * retrieve associated scsi command using scsi_host_find_tag().
98 *
99 * Return: SCSI command reference or NULL.
100 */
101static struct scsi_cmnd *mpi3mr_scmd_from_host_tag(
102 struct mpi3mr_ioc *mrioc, u16 host_tag, u16 qidx)
103{
104 struct scsi_cmnd *scmd = NULL;
105 struct scmd_priv *priv = NULL;
106 u32 unique_tag = host_tag - 1;
107
108 if (WARN_ON(host_tag > mrioc->max_host_ios))
109 goto out;
110
111 unique_tag |= (qidx << BLK_MQ_UNIQUE_TAG_BITS);
112
113 scmd = scsi_host_find_tag(mrioc->shost, unique_tag);
114 if (scmd) {
115 priv = scsi_cmd_priv(scmd);
116 if (!priv->in_lld_scope)
117 scmd = NULL;
118 }
119out:
120 return scmd;
121}
122
123/**
124 * mpi3mr_clear_scmd_priv - Cleanup SCSI command private date
125 * @mrioc: Adapter instance reference
126 * @scmd: SCSI command reference
127 *
128 * Invalidate the SCSI command private data to mark the command
129 * is not in LLD scope anymore.
130 *
131 * Return: Nothing.
132 */
133static void mpi3mr_clear_scmd_priv(struct mpi3mr_ioc *mrioc,
134 struct scsi_cmnd *scmd)
135{
136 struct scmd_priv *priv = NULL;
137
138 priv = scsi_cmd_priv(scmd);
139
140 if (WARN_ON(priv->in_lld_scope == 0))
141 return;
142 priv->host_tag = MPI3MR_HOSTTAG_INVALID;
143 priv->req_q_idx = 0xFFFF;
144 priv->scmd = NULL;
145 priv->in_lld_scope = 0;
146 priv->meta_sg_valid = 0;
147 if (priv->chain_idx >= 0) {
148 clear_bit(priv->chain_idx, mrioc->chain_bitmap);
149 priv->chain_idx = -1;
150 }
151 if (priv->meta_chain_idx >= 0) {
152 clear_bit(priv->meta_chain_idx, mrioc->chain_bitmap);
153 priv->meta_chain_idx = -1;
154 }
155}
156
157static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
158 struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc);
159static void mpi3mr_fwevt_worker(struct work_struct *work);
160
161/**
162 * mpi3mr_fwevt_free - firmware event memory dealloctor
163 * @r: k reference pointer of the firmware event
164 *
165 * Free firmware event memory when no reference.
166 */
167static void mpi3mr_fwevt_free(struct kref *r)
168{
169 kfree(container_of(r, struct mpi3mr_fwevt, ref_count));
170}
171
172/**
173 * mpi3mr_fwevt_get - k reference incrementor
174 * @fwevt: Firmware event reference
175 *
176 * Increment firmware event reference count.
177 */
178static void mpi3mr_fwevt_get(struct mpi3mr_fwevt *fwevt)
179{
180 kref_get(&fwevt->ref_count);
181}
182
183/**
184 * mpi3mr_fwevt_put - k reference decrementor
185 * @fwevt: Firmware event reference
186 *
187 * decrement firmware event reference count.
188 */
189static void mpi3mr_fwevt_put(struct mpi3mr_fwevt *fwevt)
190{
191 kref_put(&fwevt->ref_count, mpi3mr_fwevt_free);
192}
193
194/**
195 * mpi3mr_alloc_fwevt - Allocate firmware event
196 * @len: length of firmware event data to allocate
197 *
198 * Allocate firmware event with required length and initialize
199 * the reference counter.
200 *
201 * Return: firmware event reference.
202 */
203static struct mpi3mr_fwevt *mpi3mr_alloc_fwevt(int len)
204{
205 struct mpi3mr_fwevt *fwevt;
206
207 fwevt = kzalloc(sizeof(*fwevt) + len, GFP_ATOMIC);
208 if (!fwevt)
209 return NULL;
210
211 kref_init(&fwevt->ref_count);
212 return fwevt;
213}
214
215/**
216 * mpi3mr_fwevt_add_to_list - Add firmware event to the list
217 * @mrioc: Adapter instance reference
218 * @fwevt: Firmware event reference
219 *
220 * Add the given firmware event to the firmware event list.
221 *
222 * Return: Nothing.
223 */
224static void mpi3mr_fwevt_add_to_list(struct mpi3mr_ioc *mrioc,
225 struct mpi3mr_fwevt *fwevt)
226{
227 unsigned long flags;
228
229 if (!mrioc->fwevt_worker_thread)
230 return;
231
232 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
233 /* get fwevt reference count while adding it to fwevt_list */
234 mpi3mr_fwevt_get(fwevt);
235 INIT_LIST_HEAD(&fwevt->list);
236 list_add_tail(&fwevt->list, &mrioc->fwevt_list);
237 INIT_WORK(&fwevt->work, mpi3mr_fwevt_worker);
238 /* get fwevt reference count while enqueueing it to worker queue */
239 mpi3mr_fwevt_get(fwevt);
240 queue_work(mrioc->fwevt_worker_thread, &fwevt->work);
241 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
242}
243
244/**
245 * mpi3mr_fwevt_del_from_list - Delete firmware event from list
246 * @mrioc: Adapter instance reference
247 * @fwevt: Firmware event reference
248 *
249 * Delete the given firmware event from the firmware event list.
250 *
251 * Return: Nothing.
252 */
253static void mpi3mr_fwevt_del_from_list(struct mpi3mr_ioc *mrioc,
254 struct mpi3mr_fwevt *fwevt)
255{
256 unsigned long flags;
257
258 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
259 if (!list_empty(&fwevt->list)) {
260 list_del_init(&fwevt->list);
261 /*
262 * Put fwevt reference count after
263 * removing it from fwevt_list
264 */
265 mpi3mr_fwevt_put(fwevt);
266 }
267 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
268}
269
270/**
271 * mpi3mr_dequeue_fwevt - Dequeue firmware event from the list
272 * @mrioc: Adapter instance reference
273 *
274 * Dequeue a firmware event from the firmware event list.
275 *
276 * Return: firmware event.
277 */
278static struct mpi3mr_fwevt *mpi3mr_dequeue_fwevt(
279 struct mpi3mr_ioc *mrioc)
280{
281 unsigned long flags;
282 struct mpi3mr_fwevt *fwevt = NULL;
283
284 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
285 if (!list_empty(&mrioc->fwevt_list)) {
286 fwevt = list_first_entry(&mrioc->fwevt_list,
287 struct mpi3mr_fwevt, list);
288 list_del_init(&fwevt->list);
289 /*
290 * Put fwevt reference count after
291 * removing it from fwevt_list
292 */
293 mpi3mr_fwevt_put(fwevt);
294 }
295 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
296
297 return fwevt;
298}
299
300/**
301 * mpi3mr_cancel_work - cancel firmware event
302 * @fwevt: fwevt object which needs to be canceled
303 *
304 * Return: Nothing.
305 */
306static void mpi3mr_cancel_work(struct mpi3mr_fwevt *fwevt)
307{
308 /*
309 * Wait on the fwevt to complete. If this returns 1, then
310 * the event was never executed.
311 *
312 * If it did execute, we wait for it to finish, and the put will
313 * happen from mpi3mr_process_fwevt()
314 */
315 if (cancel_work_sync(&fwevt->work)) {
316 /*
317 * Put fwevt reference count after
318 * dequeuing it from worker queue
319 */
320 mpi3mr_fwevt_put(fwevt);
321 /*
322 * Put fwevt reference count to neutralize
323 * kref_init increment
324 */
325 mpi3mr_fwevt_put(fwevt);
326 }
327}
328
329/**
330 * mpi3mr_cleanup_fwevt_list - Cleanup firmware event list
331 * @mrioc: Adapter instance reference
332 *
333 * Flush all pending firmware events from the firmware event
334 * list.
335 *
336 * Return: Nothing.
337 */
338void mpi3mr_cleanup_fwevt_list(struct mpi3mr_ioc *mrioc)
339{
340 struct mpi3mr_fwevt *fwevt = NULL;
341
342 if ((list_empty(&mrioc->fwevt_list) && !mrioc->current_event) ||
343 !mrioc->fwevt_worker_thread)
344 return;
345
346 while ((fwevt = mpi3mr_dequeue_fwevt(mrioc)))
347 mpi3mr_cancel_work(fwevt);
348
349 if (mrioc->current_event) {
350 fwevt = mrioc->current_event;
351 /*
352 * Don't call cancel_work_sync() API for the
353 * fwevt work if the controller reset is
354 * get called as part of processing the
355 * same fwevt work (or) when worker thread is
356 * waiting for device add/remove APIs to complete.
357 * Otherwise we will see deadlock.
358 */
359 if (current_work() == &fwevt->work || fwevt->pending_at_sml) {
360 fwevt->discard = 1;
361 return;
362 }
363
364 mpi3mr_cancel_work(fwevt);
365 }
366}
367
368/**
369 * mpi3mr_queue_qd_reduction_event - Queue TG QD reduction event
370 * @mrioc: Adapter instance reference
371 * @tg: Throttle group information pointer
372 *
373 * Accessor to queue on synthetically generated driver event to
374 * the event worker thread, the driver event will be used to
375 * reduce the QD of all VDs in the TG from the worker thread.
376 *
377 * Return: None.
378 */
379static void mpi3mr_queue_qd_reduction_event(struct mpi3mr_ioc *mrioc,
380 struct mpi3mr_throttle_group_info *tg)
381{
382 struct mpi3mr_fwevt *fwevt;
383 u16 sz = sizeof(struct mpi3mr_throttle_group_info *);
384
385 /*
386 * If the QD reduction event is already queued due to throttle and if
387 * the QD is not restored through device info change event
388 * then dont queue further reduction events
389 */
390 if (tg->fw_qd != tg->modified_qd)
391 return;
392
393 fwevt = mpi3mr_alloc_fwevt(sz);
394 if (!fwevt) {
395 ioc_warn(mrioc, "failed to queue TG QD reduction event\n");
396 return;
397 }
398 *(struct mpi3mr_throttle_group_info **)fwevt->event_data = tg;
399 fwevt->mrioc = mrioc;
400 fwevt->event_id = MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION;
401 fwevt->send_ack = 0;
402 fwevt->process_evt = 1;
403 fwevt->evt_ctx = 0;
404 fwevt->event_data_size = sz;
405 tg->modified_qd = max_t(u16, (tg->fw_qd * tg->qd_reduction) / 10, 8);
406
407 dprint_event_bh(mrioc, "qd reduction event queued for tg_id(%d)\n",
408 tg->id);
409 mpi3mr_fwevt_add_to_list(mrioc, fwevt);
410}
411
412/**
413 * mpi3mr_invalidate_devhandles -Invalidate device handles
414 * @mrioc: Adapter instance reference
415 *
416 * Invalidate the device handles in the target device structures
417 * . Called post reset prior to reinitializing the controller.
418 *
419 * Return: Nothing.
420 */
421void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc)
422{
423 struct mpi3mr_tgt_dev *tgtdev;
424 struct mpi3mr_stgt_priv_data *tgt_priv;
425
426 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
427 tgtdev->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
428 if (tgtdev->starget && tgtdev->starget->hostdata) {
429 tgt_priv = tgtdev->starget->hostdata;
430 tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
431 tgt_priv->io_throttle_enabled = 0;
432 tgt_priv->io_divert = 0;
433 tgt_priv->throttle_group = NULL;
434 tgt_priv->wslen = 0;
435 if (tgtdev->host_exposed)
436 atomic_set(&tgt_priv->block_io, 1);
437 }
438 }
439}
440
441/**
442 * mpi3mr_print_scmd - print individual SCSI command
443 * @rq: Block request
444 * @data: Adapter instance reference
445 *
446 * Print the SCSI command details if it is in LLD scope.
447 *
448 * Return: true always.
449 */
450static bool mpi3mr_print_scmd(struct request *rq, void *data)
451{
452 struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data;
453 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
454 struct scmd_priv *priv = NULL;
455
456 if (scmd) {
457 priv = scsi_cmd_priv(scmd);
458 if (!priv->in_lld_scope)
459 goto out;
460
461 ioc_info(mrioc, "%s :Host Tag = %d, qid = %d\n",
462 __func__, priv->host_tag, priv->req_q_idx + 1);
463 scsi_print_command(scmd);
464 }
465
466out:
467 return(true);
468}
469
470/**
471 * mpi3mr_flush_scmd - Flush individual SCSI command
472 * @rq: Block request
473 * @data: Adapter instance reference
474 *
475 * Return the SCSI command to the upper layers if it is in LLD
476 * scope.
477 *
478 * Return: true always.
479 */
480
481static bool mpi3mr_flush_scmd(struct request *rq, void *data)
482{
483 struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data;
484 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
485 struct scmd_priv *priv = NULL;
486
487 if (scmd) {
488 priv = scsi_cmd_priv(scmd);
489 if (!priv->in_lld_scope)
490 goto out;
491
492 if (priv->meta_sg_valid)
493 dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd),
494 scsi_prot_sg_count(scmd), scmd->sc_data_direction);
495 mpi3mr_clear_scmd_priv(mrioc, scmd);
496 scsi_dma_unmap(scmd);
497 scmd->result = DID_RESET << 16;
498 scsi_print_command(scmd);
499 scsi_done(scmd);
500 mrioc->flush_io_count++;
501 }
502
503out:
504 return(true);
505}
506
507/**
508 * mpi3mr_count_dev_pending - Count commands pending for a lun
509 * @rq: Block request
510 * @data: SCSI device reference
511 *
512 * This is an iterator function called for each SCSI command in
513 * a host and if the command is pending in the LLD for the
514 * specific device(lun) then device specific pending I/O counter
515 * is updated in the device structure.
516 *
517 * Return: true always.
518 */
519
520static bool mpi3mr_count_dev_pending(struct request *rq, void *data)
521{
522 struct scsi_device *sdev = (struct scsi_device *)data;
523 struct mpi3mr_sdev_priv_data *sdev_priv_data = sdev->hostdata;
524 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
525 struct scmd_priv *priv;
526
527 if (scmd) {
528 priv = scsi_cmd_priv(scmd);
529 if (!priv->in_lld_scope)
530 goto out;
531 if (scmd->device == sdev)
532 sdev_priv_data->pend_count++;
533 }
534
535out:
536 return true;
537}
538
539/**
540 * mpi3mr_count_tgt_pending - Count commands pending for target
541 * @rq: Block request
542 * @data: SCSI target reference
543 *
544 * This is an iterator function called for each SCSI command in
545 * a host and if the command is pending in the LLD for the
546 * specific target then target specific pending I/O counter is
547 * updated in the target structure.
548 *
549 * Return: true always.
550 */
551
552static bool mpi3mr_count_tgt_pending(struct request *rq, void *data)
553{
554 struct scsi_target *starget = (struct scsi_target *)data;
555 struct mpi3mr_stgt_priv_data *stgt_priv_data = starget->hostdata;
556 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq);
557 struct scmd_priv *priv;
558
559 if (scmd) {
560 priv = scsi_cmd_priv(scmd);
561 if (!priv->in_lld_scope)
562 goto out;
563 if (scmd->device && (scsi_target(scmd->device) == starget))
564 stgt_priv_data->pend_count++;
565 }
566
567out:
568 return true;
569}
570
571/**
572 * mpi3mr_flush_host_io - Flush host I/Os
573 * @mrioc: Adapter instance reference
574 *
575 * Flush all of the pending I/Os by calling
576 * blk_mq_tagset_busy_iter() for each possible tag. This is
577 * executed post controller reset
578 *
579 * Return: Nothing.
580 */
581void mpi3mr_flush_host_io(struct mpi3mr_ioc *mrioc)
582{
583 struct Scsi_Host *shost = mrioc->shost;
584
585 mrioc->flush_io_count = 0;
586 ioc_info(mrioc, "%s :Flushing Host I/O cmds post reset\n", __func__);
587 blk_mq_tagset_busy_iter(&shost->tag_set,
588 mpi3mr_flush_scmd, (void *)mrioc);
589 ioc_info(mrioc, "%s :Flushed %d Host I/O cmds\n", __func__,
590 mrioc->flush_io_count);
591}
592
593/**
594 * mpi3mr_flush_cmds_for_unrecovered_controller - Flush all pending cmds
595 * @mrioc: Adapter instance reference
596 *
597 * This function waits for currently running IO poll threads to
598 * exit and then flushes all host I/Os and any internal pending
599 * cmds. This is executed after controller is marked as
600 * unrecoverable.
601 *
602 * Return: Nothing.
603 */
604void mpi3mr_flush_cmds_for_unrecovered_controller(struct mpi3mr_ioc *mrioc)
605{
606 struct Scsi_Host *shost = mrioc->shost;
607 int i;
608
609 if (!mrioc->unrecoverable)
610 return;
611
612 if (mrioc->op_reply_qinfo) {
613 for (i = 0; i < mrioc->num_queues; i++) {
614 while (atomic_read(&mrioc->op_reply_qinfo[i].in_use))
615 udelay(500);
616 atomic_set(&mrioc->op_reply_qinfo[i].pend_ios, 0);
617 }
618 }
619 mrioc->flush_io_count = 0;
620 blk_mq_tagset_busy_iter(&shost->tag_set,
621 mpi3mr_flush_scmd, (void *)mrioc);
622 mpi3mr_flush_delayed_cmd_lists(mrioc);
623 mpi3mr_flush_drv_cmds(mrioc);
624}
625
626/**
627 * mpi3mr_alloc_tgtdev - target device allocator
628 *
629 * Allocate target device instance and initialize the reference
630 * count
631 *
632 * Return: target device instance.
633 */
634static struct mpi3mr_tgt_dev *mpi3mr_alloc_tgtdev(void)
635{
636 struct mpi3mr_tgt_dev *tgtdev;
637
638 tgtdev = kzalloc(sizeof(*tgtdev), GFP_ATOMIC);
639 if (!tgtdev)
640 return NULL;
641 kref_init(&tgtdev->ref_count);
642 return tgtdev;
643}
644
645/**
646 * mpi3mr_tgtdev_add_to_list -Add tgtdevice to the list
647 * @mrioc: Adapter instance reference
648 * @tgtdev: Target device
649 *
650 * Add the target device to the target device list
651 *
652 * Return: Nothing.
653 */
654static void mpi3mr_tgtdev_add_to_list(struct mpi3mr_ioc *mrioc,
655 struct mpi3mr_tgt_dev *tgtdev)
656{
657 unsigned long flags;
658
659 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
660 mpi3mr_tgtdev_get(tgtdev);
661 INIT_LIST_HEAD(&tgtdev->list);
662 list_add_tail(&tgtdev->list, &mrioc->tgtdev_list);
663 tgtdev->state = MPI3MR_DEV_CREATED;
664 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
665}
666
667/**
668 * mpi3mr_tgtdev_del_from_list -Delete tgtdevice from the list
669 * @mrioc: Adapter instance reference
670 * @tgtdev: Target device
671 * @must_delete: Must delete the target device from the list irrespective
672 * of the device state.
673 *
674 * Remove the target device from the target device list
675 *
676 * Return: Nothing.
677 */
678static void mpi3mr_tgtdev_del_from_list(struct mpi3mr_ioc *mrioc,
679 struct mpi3mr_tgt_dev *tgtdev, bool must_delete)
680{
681 unsigned long flags;
682
683 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
684 if ((tgtdev->state == MPI3MR_DEV_REMOVE_HS_STARTED) || (must_delete == true)) {
685 if (!list_empty(&tgtdev->list)) {
686 list_del_init(&tgtdev->list);
687 tgtdev->state = MPI3MR_DEV_DELETED;
688 mpi3mr_tgtdev_put(tgtdev);
689 }
690 }
691 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
692}
693
694/**
695 * __mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle
696 * @mrioc: Adapter instance reference
697 * @handle: Device handle
698 *
699 * Accessor to retrieve target device from the device handle.
700 * Non Lock version
701 *
702 * Return: Target device reference.
703 */
704static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_handle(
705 struct mpi3mr_ioc *mrioc, u16 handle)
706{
707 struct mpi3mr_tgt_dev *tgtdev;
708
709 assert_spin_locked(&mrioc->tgtdev_lock);
710 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list)
711 if (tgtdev->dev_handle == handle)
712 goto found_tgtdev;
713 return NULL;
714
715found_tgtdev:
716 mpi3mr_tgtdev_get(tgtdev);
717 return tgtdev;
718}
719
720/**
721 * mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle
722 * @mrioc: Adapter instance reference
723 * @handle: Device handle
724 *
725 * Accessor to retrieve target device from the device handle.
726 * Lock version
727 *
728 * Return: Target device reference.
729 */
730struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_handle(
731 struct mpi3mr_ioc *mrioc, u16 handle)
732{
733 struct mpi3mr_tgt_dev *tgtdev;
734 unsigned long flags;
735
736 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
737 tgtdev = __mpi3mr_get_tgtdev_by_handle(mrioc, handle);
738 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
739 return tgtdev;
740}
741
742/**
743 * __mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persist ID
744 * @mrioc: Adapter instance reference
745 * @persist_id: Persistent ID
746 *
747 * Accessor to retrieve target device from the Persistent ID.
748 * Non Lock version
749 *
750 * Return: Target device reference.
751 */
752static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_perst_id(
753 struct mpi3mr_ioc *mrioc, u16 persist_id)
754{
755 struct mpi3mr_tgt_dev *tgtdev;
756
757 assert_spin_locked(&mrioc->tgtdev_lock);
758 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list)
759 if (tgtdev->perst_id == persist_id)
760 goto found_tgtdev;
761 return NULL;
762
763found_tgtdev:
764 mpi3mr_tgtdev_get(tgtdev);
765 return tgtdev;
766}
767
768/**
769 * mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persistent ID
770 * @mrioc: Adapter instance reference
771 * @persist_id: Persistent ID
772 *
773 * Accessor to retrieve target device from the Persistent ID.
774 * Lock version
775 *
776 * Return: Target device reference.
777 */
778static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_perst_id(
779 struct mpi3mr_ioc *mrioc, u16 persist_id)
780{
781 struct mpi3mr_tgt_dev *tgtdev;
782 unsigned long flags;
783
784 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
785 tgtdev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, persist_id);
786 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
787 return tgtdev;
788}
789
790/**
791 * __mpi3mr_get_tgtdev_from_tgtpriv -Get tgtdev from tgt private
792 * @mrioc: Adapter instance reference
793 * @tgt_priv: Target private data
794 *
795 * Accessor to return target device from the target private
796 * data. Non Lock version
797 *
798 * Return: Target device reference.
799 */
800static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_from_tgtpriv(
801 struct mpi3mr_ioc *mrioc, struct mpi3mr_stgt_priv_data *tgt_priv)
802{
803 struct mpi3mr_tgt_dev *tgtdev;
804
805 assert_spin_locked(&mrioc->tgtdev_lock);
806 tgtdev = tgt_priv->tgt_dev;
807 if (tgtdev)
808 mpi3mr_tgtdev_get(tgtdev);
809 return tgtdev;
810}
811
812/**
813 * mpi3mr_set_io_divert_for_all_vd_in_tg -set divert for TG VDs
814 * @mrioc: Adapter instance reference
815 * @tg: Throttle group information pointer
816 * @divert_value: 1 or 0
817 *
818 * Accessor to set io_divert flag for each device associated
819 * with the given throttle group with the given value.
820 *
821 * Return: None.
822 */
823static void mpi3mr_set_io_divert_for_all_vd_in_tg(struct mpi3mr_ioc *mrioc,
824 struct mpi3mr_throttle_group_info *tg, u8 divert_value)
825{
826 unsigned long flags;
827 struct mpi3mr_tgt_dev *tgtdev;
828 struct mpi3mr_stgt_priv_data *tgt_priv;
829
830 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
831 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
832 if (tgtdev->starget && tgtdev->starget->hostdata) {
833 tgt_priv = tgtdev->starget->hostdata;
834 if (tgt_priv->throttle_group == tg)
835 tgt_priv->io_divert = divert_value;
836 }
837 }
838 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
839}
840
841/**
842 * mpi3mr_print_device_event_notice - print notice related to post processing of
843 * device event after controller reset.
844 *
845 * @mrioc: Adapter instance reference
846 * @device_add: true for device add event and false for device removal event
847 *
848 * Return: None.
849 */
850void mpi3mr_print_device_event_notice(struct mpi3mr_ioc *mrioc,
851 bool device_add)
852{
853 ioc_notice(mrioc, "Device %s was in progress before the reset and\n",
854 (device_add ? "addition" : "removal"));
855 ioc_notice(mrioc, "completed after reset, verify whether the exposed devices\n");
856 ioc_notice(mrioc, "are matched with attached devices for correctness\n");
857}
858
859/**
860 * mpi3mr_remove_tgtdev_from_host - Remove dev from upper layers
861 * @mrioc: Adapter instance reference
862 * @tgtdev: Target device structure
863 *
864 * Checks whether the device is exposed to upper layers and if it
865 * is then remove the device from upper layers by calling
866 * scsi_remove_target().
867 *
868 * Return: 0 on success, non zero on failure.
869 */
870void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc,
871 struct mpi3mr_tgt_dev *tgtdev)
872{
873 struct mpi3mr_stgt_priv_data *tgt_priv;
874
875 ioc_info(mrioc, "%s :Removing handle(0x%04x), wwid(0x%016llx)\n",
876 __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
877 if (tgtdev->starget && tgtdev->starget->hostdata) {
878 tgt_priv = tgtdev->starget->hostdata;
879 atomic_set(&tgt_priv->block_io, 0);
880 tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
881 }
882
883 if (!mrioc->sas_transport_enabled || (tgtdev->dev_type !=
884 MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl) {
885 if (tgtdev->starget) {
886 if (mrioc->current_event)
887 mrioc->current_event->pending_at_sml = 1;
888 scsi_remove_target(&tgtdev->starget->dev);
889 tgtdev->host_exposed = 0;
890 if (mrioc->current_event) {
891 mrioc->current_event->pending_at_sml = 0;
892 if (mrioc->current_event->discard) {
893 mpi3mr_print_device_event_notice(mrioc,
894 false);
895 return;
896 }
897 }
898 }
899 } else
900 mpi3mr_remove_tgtdev_from_sas_transport(mrioc, tgtdev);
901
902 ioc_info(mrioc, "%s :Removed handle(0x%04x), wwid(0x%016llx)\n",
903 __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid);
904}
905
906/**
907 * mpi3mr_report_tgtdev_to_host - Expose device to upper layers
908 * @mrioc: Adapter instance reference
909 * @perst_id: Persistent ID of the device
910 *
911 * Checks whether the device can be exposed to upper layers and
912 * if it is not then expose the device to upper layers by
913 * calling scsi_scan_target().
914 *
915 * Return: 0 on success, non zero on failure.
916 */
917static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc,
918 u16 perst_id)
919{
920 int retval = 0;
921 struct mpi3mr_tgt_dev *tgtdev;
922
923 if (mrioc->reset_in_progress)
924 return -1;
925
926 tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
927 if (!tgtdev) {
928 retval = -1;
929 goto out;
930 }
931 if (tgtdev->is_hidden || tgtdev->host_exposed) {
932 retval = -1;
933 goto out;
934 }
935 if (!mrioc->sas_transport_enabled || (tgtdev->dev_type !=
936 MPI3_DEVICE_DEVFORM_SAS_SATA) || tgtdev->non_stl){
937 tgtdev->host_exposed = 1;
938 if (mrioc->current_event)
939 mrioc->current_event->pending_at_sml = 1;
940 scsi_scan_target(&mrioc->shost->shost_gendev,
941 mrioc->scsi_device_channel, tgtdev->perst_id,
942 SCAN_WILD_CARD, SCSI_SCAN_INITIAL);
943 if (!tgtdev->starget)
944 tgtdev->host_exposed = 0;
945 if (mrioc->current_event) {
946 mrioc->current_event->pending_at_sml = 0;
947 if (mrioc->current_event->discard) {
948 mpi3mr_print_device_event_notice(mrioc, true);
949 goto out;
950 }
951 }
952 } else
953 mpi3mr_report_tgtdev_to_sas_transport(mrioc, tgtdev);
954out:
955 if (tgtdev)
956 mpi3mr_tgtdev_put(tgtdev);
957
958 return retval;
959}
960
961/**
962 * mpi3mr_change_queue_depth- Change QD callback handler
963 * @sdev: SCSI device reference
964 * @q_depth: Queue depth
965 *
966 * Validate and limit QD and call scsi_change_queue_depth.
967 *
968 * Return: return value of scsi_change_queue_depth
969 */
970static int mpi3mr_change_queue_depth(struct scsi_device *sdev,
971 int q_depth)
972{
973 struct scsi_target *starget = scsi_target(sdev);
974 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
975 int retval = 0;
976
977 if (!sdev->tagged_supported)
978 q_depth = 1;
979 if (q_depth > shost->can_queue)
980 q_depth = shost->can_queue;
981 else if (!q_depth)
982 q_depth = MPI3MR_DEFAULT_SDEV_QD;
983 retval = scsi_change_queue_depth(sdev, q_depth);
984 sdev->max_queue_depth = sdev->queue_depth;
985
986 return retval;
987}
988
989/**
990 * mpi3mr_update_sdev - Update SCSI device information
991 * @sdev: SCSI device reference
992 * @data: target device reference
993 *
994 * This is an iterator function called for each SCSI device in a
995 * target to update the target specific information into each
996 * SCSI device.
997 *
998 * Return: Nothing.
999 */
1000static void
1001mpi3mr_update_sdev(struct scsi_device *sdev, void *data)
1002{
1003 struct mpi3mr_tgt_dev *tgtdev;
1004
1005 tgtdev = (struct mpi3mr_tgt_dev *)data;
1006 if (!tgtdev)
1007 return;
1008
1009 mpi3mr_change_queue_depth(sdev, tgtdev->q_depth);
1010 switch (tgtdev->dev_type) {
1011 case MPI3_DEVICE_DEVFORM_PCIE:
1012 /*The block layer hw sector size = 512*/
1013 if ((tgtdev->dev_spec.pcie_inf.dev_info &
1014 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
1015 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) {
1016 blk_queue_max_hw_sectors(sdev->request_queue,
1017 tgtdev->dev_spec.pcie_inf.mdts / 512);
1018 if (tgtdev->dev_spec.pcie_inf.pgsz == 0)
1019 blk_queue_virt_boundary(sdev->request_queue,
1020 ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1));
1021 else
1022 blk_queue_virt_boundary(sdev->request_queue,
1023 ((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1));
1024 }
1025 break;
1026 default:
1027 break;
1028 }
1029}
1030
1031/**
1032 * mpi3mr_rfresh_tgtdevs - Refresh target device exposure
1033 * @mrioc: Adapter instance reference
1034 *
1035 * This is executed post controller reset to identify any
1036 * missing devices during reset and remove from the upper layers
1037 * or expose any newly detected device to the upper layers.
1038 *
1039 * Return: Nothing.
1040 */
1041
1042void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc)
1043{
1044 struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
1045 struct mpi3mr_stgt_priv_data *tgt_priv;
1046
1047 dprint_reset(mrioc, "refresh target devices: check for removals\n");
1048 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
1049 list) {
1050 if ((tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) &&
1051 tgtdev->is_hidden &&
1052 tgtdev->host_exposed && tgtdev->starget &&
1053 tgtdev->starget->hostdata) {
1054 tgt_priv = tgtdev->starget->hostdata;
1055 tgt_priv->dev_removed = 1;
1056 atomic_set(&tgt_priv->block_io, 0);
1057 }
1058 }
1059
1060 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
1061 list) {
1062 if (tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) {
1063 dprint_reset(mrioc, "removing target device with perst_id(%d)\n",
1064 tgtdev->perst_id);
1065 if (tgtdev->host_exposed)
1066 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1067 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev, true);
1068 mpi3mr_tgtdev_put(tgtdev);
1069 } else if (tgtdev->is_hidden & tgtdev->host_exposed) {
1070 dprint_reset(mrioc, "hiding target device with perst_id(%d)\n",
1071 tgtdev->perst_id);
1072 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1073 }
1074 }
1075
1076 tgtdev = NULL;
1077 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
1078 if ((tgtdev->dev_handle != MPI3MR_INVALID_DEV_HANDLE) &&
1079 !tgtdev->is_hidden) {
1080 if (!tgtdev->host_exposed)
1081 mpi3mr_report_tgtdev_to_host(mrioc,
1082 tgtdev->perst_id);
1083 else if (tgtdev->starget)
1084 starget_for_each_device(tgtdev->starget,
1085 (void *)tgtdev, mpi3mr_update_sdev);
1086 }
1087 }
1088}
1089
1090/**
1091 * mpi3mr_update_tgtdev - DevStatusChange evt bottomhalf
1092 * @mrioc: Adapter instance reference
1093 * @tgtdev: Target device internal structure
1094 * @dev_pg0: New device page0
1095 * @is_added: Flag to indicate the device is just added
1096 *
1097 * Update the information from the device page0 into the driver
1098 * cached target device structure.
1099 *
1100 * Return: Nothing.
1101 */
1102static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc,
1103 struct mpi3mr_tgt_dev *tgtdev, struct mpi3_device_page0 *dev_pg0,
1104 bool is_added)
1105{
1106 u16 flags = 0;
1107 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
1108 struct mpi3mr_enclosure_node *enclosure_dev = NULL;
1109 u8 prot_mask = 0;
1110
1111 tgtdev->perst_id = le16_to_cpu(dev_pg0->persistent_id);
1112 tgtdev->dev_handle = le16_to_cpu(dev_pg0->dev_handle);
1113 tgtdev->dev_type = dev_pg0->device_form;
1114 tgtdev->io_unit_port = dev_pg0->io_unit_port;
1115 tgtdev->encl_handle = le16_to_cpu(dev_pg0->enclosure_handle);
1116 tgtdev->parent_handle = le16_to_cpu(dev_pg0->parent_dev_handle);
1117 tgtdev->slot = le16_to_cpu(dev_pg0->slot);
1118 tgtdev->q_depth = le16_to_cpu(dev_pg0->queue_depth);
1119 tgtdev->wwid = le64_to_cpu(dev_pg0->wwid);
1120 tgtdev->devpg0_flag = le16_to_cpu(dev_pg0->flags);
1121
1122 if (tgtdev->encl_handle)
1123 enclosure_dev = mpi3mr_enclosure_find_by_handle(mrioc,
1124 tgtdev->encl_handle);
1125 if (enclosure_dev)
1126 tgtdev->enclosure_logical_id = le64_to_cpu(
1127 enclosure_dev->pg0.enclosure_logical_id);
1128
1129 flags = tgtdev->devpg0_flag;
1130
1131 tgtdev->is_hidden = (flags & MPI3_DEVICE0_FLAGS_HIDDEN);
1132
1133 if (is_added == true)
1134 tgtdev->io_throttle_enabled =
1135 (flags & MPI3_DEVICE0_FLAGS_IO_THROTTLING_REQUIRED) ? 1 : 0;
1136
1137 switch (flags & MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_MASK) {
1138 case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_256_LB:
1139 tgtdev->wslen = MPI3MR_WRITE_SAME_MAX_LEN_256_BLKS;
1140 break;
1141 case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_2048_LB:
1142 tgtdev->wslen = MPI3MR_WRITE_SAME_MAX_LEN_2048_BLKS;
1143 break;
1144 case MPI3_DEVICE0_FLAGS_MAX_WRITE_SAME_NO_LIMIT:
1145 default:
1146 tgtdev->wslen = 0;
1147 break;
1148 }
1149
1150 if (tgtdev->starget && tgtdev->starget->hostdata) {
1151 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
1152 tgtdev->starget->hostdata;
1153 scsi_tgt_priv_data->perst_id = tgtdev->perst_id;
1154 scsi_tgt_priv_data->dev_handle = tgtdev->dev_handle;
1155 scsi_tgt_priv_data->dev_type = tgtdev->dev_type;
1156 scsi_tgt_priv_data->io_throttle_enabled =
1157 tgtdev->io_throttle_enabled;
1158 if (is_added == true)
1159 atomic_set(&scsi_tgt_priv_data->block_io, 0);
1160 scsi_tgt_priv_data->wslen = tgtdev->wslen;
1161 }
1162
1163 switch (dev_pg0->access_status) {
1164 case MPI3_DEVICE0_ASTATUS_NO_ERRORS:
1165 case MPI3_DEVICE0_ASTATUS_PREPARE:
1166 case MPI3_DEVICE0_ASTATUS_NEEDS_INITIALIZATION:
1167 case MPI3_DEVICE0_ASTATUS_DEVICE_MISSING_DELAY:
1168 break;
1169 default:
1170 tgtdev->is_hidden = 1;
1171 break;
1172 }
1173
1174 switch (tgtdev->dev_type) {
1175 case MPI3_DEVICE_DEVFORM_SAS_SATA:
1176 {
1177 struct mpi3_device0_sas_sata_format *sasinf =
1178 &dev_pg0->device_specific.sas_sata_format;
1179 u16 dev_info = le16_to_cpu(sasinf->device_info);
1180
1181 tgtdev->dev_spec.sas_sata_inf.dev_info = dev_info;
1182 tgtdev->dev_spec.sas_sata_inf.sas_address =
1183 le64_to_cpu(sasinf->sas_address);
1184 tgtdev->dev_spec.sas_sata_inf.phy_id = sasinf->phy_num;
1185 tgtdev->dev_spec.sas_sata_inf.attached_phy_id =
1186 sasinf->attached_phy_identifier;
1187 if ((dev_info & MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_MASK) !=
1188 MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_END_DEVICE)
1189 tgtdev->is_hidden = 1;
1190 else if (!(dev_info & (MPI3_SAS_DEVICE_INFO_STP_SATA_TARGET |
1191 MPI3_SAS_DEVICE_INFO_SSP_TARGET)))
1192 tgtdev->is_hidden = 1;
1193
1194 if (((tgtdev->devpg0_flag &
1195 MPI3_DEVICE0_FLAGS_ATT_METHOD_DIR_ATTACHED)
1196 && (tgtdev->devpg0_flag &
1197 MPI3_DEVICE0_FLAGS_ATT_METHOD_VIRTUAL)) ||
1198 (tgtdev->parent_handle == 0xFFFF))
1199 tgtdev->non_stl = 1;
1200 if (tgtdev->dev_spec.sas_sata_inf.hba_port)
1201 tgtdev->dev_spec.sas_sata_inf.hba_port->port_id =
1202 dev_pg0->io_unit_port;
1203 break;
1204 }
1205 case MPI3_DEVICE_DEVFORM_PCIE:
1206 {
1207 struct mpi3_device0_pcie_format *pcieinf =
1208 &dev_pg0->device_specific.pcie_format;
1209 u16 dev_info = le16_to_cpu(pcieinf->device_info);
1210
1211 tgtdev->dev_spec.pcie_inf.dev_info = dev_info;
1212 tgtdev->dev_spec.pcie_inf.capb =
1213 le32_to_cpu(pcieinf->capabilities);
1214 tgtdev->dev_spec.pcie_inf.mdts = MPI3MR_DEFAULT_MDTS;
1215 /* 2^12 = 4096 */
1216 tgtdev->dev_spec.pcie_inf.pgsz = 12;
1217 if (dev_pg0->access_status == MPI3_DEVICE0_ASTATUS_NO_ERRORS) {
1218 tgtdev->dev_spec.pcie_inf.mdts =
1219 le32_to_cpu(pcieinf->maximum_data_transfer_size);
1220 tgtdev->dev_spec.pcie_inf.pgsz = pcieinf->page_size;
1221 tgtdev->dev_spec.pcie_inf.reset_to =
1222 max_t(u8, pcieinf->controller_reset_to,
1223 MPI3MR_INTADMCMD_TIMEOUT);
1224 tgtdev->dev_spec.pcie_inf.abort_to =
1225 max_t(u8, pcieinf->nvme_abort_to,
1226 MPI3MR_INTADMCMD_TIMEOUT);
1227 }
1228 if (tgtdev->dev_spec.pcie_inf.mdts > (1024 * 1024))
1229 tgtdev->dev_spec.pcie_inf.mdts = (1024 * 1024);
1230 if (((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
1231 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) &&
1232 ((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) !=
1233 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_SCSI_DEVICE))
1234 tgtdev->is_hidden = 1;
1235 tgtdev->non_stl = 1;
1236 if (!mrioc->shost)
1237 break;
1238 prot_mask = scsi_host_get_prot(mrioc->shost);
1239 if (prot_mask & SHOST_DIX_TYPE0_PROTECTION) {
1240 scsi_host_set_prot(mrioc->shost, prot_mask & 0x77);
1241 ioc_info(mrioc,
1242 "%s : Disabling DIX0 prot capability\n", __func__);
1243 ioc_info(mrioc,
1244 "because HBA does not support DIX0 operation on NVME drives\n");
1245 }
1246 break;
1247 }
1248 case MPI3_DEVICE_DEVFORM_VD:
1249 {
1250 struct mpi3_device0_vd_format *vdinf =
1251 &dev_pg0->device_specific.vd_format;
1252 struct mpi3mr_throttle_group_info *tg = NULL;
1253 u16 vdinf_io_throttle_group =
1254 le16_to_cpu(vdinf->io_throttle_group);
1255
1256 tgtdev->dev_spec.vd_inf.state = vdinf->vd_state;
1257 if (vdinf->vd_state == MPI3_DEVICE0_VD_STATE_OFFLINE)
1258 tgtdev->is_hidden = 1;
1259 tgtdev->non_stl = 1;
1260 tgtdev->dev_spec.vd_inf.tg_id = vdinf_io_throttle_group;
1261 tgtdev->dev_spec.vd_inf.tg_high =
1262 le16_to_cpu(vdinf->io_throttle_group_high) * 2048;
1263 tgtdev->dev_spec.vd_inf.tg_low =
1264 le16_to_cpu(vdinf->io_throttle_group_low) * 2048;
1265 if (vdinf_io_throttle_group < mrioc->num_io_throttle_group) {
1266 tg = mrioc->throttle_groups + vdinf_io_throttle_group;
1267 tg->id = vdinf_io_throttle_group;
1268 tg->high = tgtdev->dev_spec.vd_inf.tg_high;
1269 tg->low = tgtdev->dev_spec.vd_inf.tg_low;
1270 tg->qd_reduction =
1271 tgtdev->dev_spec.vd_inf.tg_qd_reduction;
1272 if (is_added == true)
1273 tg->fw_qd = tgtdev->q_depth;
1274 tg->modified_qd = tgtdev->q_depth;
1275 }
1276 tgtdev->dev_spec.vd_inf.tg = tg;
1277 if (scsi_tgt_priv_data)
1278 scsi_tgt_priv_data->throttle_group = tg;
1279 break;
1280 }
1281 default:
1282 break;
1283 }
1284}
1285
1286/**
1287 * mpi3mr_devstatuschg_evt_bh - DevStatusChange evt bottomhalf
1288 * @mrioc: Adapter instance reference
1289 * @fwevt: Firmware event information.
1290 *
1291 * Process Device status Change event and based on device's new
1292 * information, either expose the device to the upper layers, or
1293 * remove the device from upper layers.
1294 *
1295 * Return: Nothing.
1296 */
1297static void mpi3mr_devstatuschg_evt_bh(struct mpi3mr_ioc *mrioc,
1298 struct mpi3mr_fwevt *fwevt)
1299{
1300 u16 dev_handle = 0;
1301 u8 uhide = 0, delete = 0, cleanup = 0;
1302 struct mpi3mr_tgt_dev *tgtdev = NULL;
1303 struct mpi3_event_data_device_status_change *evtdata =
1304 (struct mpi3_event_data_device_status_change *)fwevt->event_data;
1305
1306 dev_handle = le16_to_cpu(evtdata->dev_handle);
1307 ioc_info(mrioc,
1308 "%s :device status change: handle(0x%04x): reason code(0x%x)\n",
1309 __func__, dev_handle, evtdata->reason_code);
1310 switch (evtdata->reason_code) {
1311 case MPI3_EVENT_DEV_STAT_RC_HIDDEN:
1312 delete = 1;
1313 break;
1314 case MPI3_EVENT_DEV_STAT_RC_NOT_HIDDEN:
1315 uhide = 1;
1316 break;
1317 case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING:
1318 delete = 1;
1319 cleanup = 1;
1320 break;
1321 default:
1322 ioc_info(mrioc, "%s :Unhandled reason code(0x%x)\n", __func__,
1323 evtdata->reason_code);
1324 break;
1325 }
1326
1327 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
1328 if (!tgtdev)
1329 goto out;
1330 if (uhide) {
1331 tgtdev->is_hidden = 0;
1332 if (!tgtdev->host_exposed)
1333 mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id);
1334 }
1335
1336 if (delete)
1337 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1338
1339 if (cleanup) {
1340 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev, false);
1341 mpi3mr_tgtdev_put(tgtdev);
1342 }
1343
1344out:
1345 if (tgtdev)
1346 mpi3mr_tgtdev_put(tgtdev);
1347}
1348
1349/**
1350 * mpi3mr_devinfochg_evt_bh - DeviceInfoChange evt bottomhalf
1351 * @mrioc: Adapter instance reference
1352 * @dev_pg0: New device page0
1353 *
1354 * Process Device Info Change event and based on device's new
1355 * information, either expose the device to the upper layers, or
1356 * remove the device from upper layers or update the details of
1357 * the device.
1358 *
1359 * Return: Nothing.
1360 */
1361static void mpi3mr_devinfochg_evt_bh(struct mpi3mr_ioc *mrioc,
1362 struct mpi3_device_page0 *dev_pg0)
1363{
1364 struct mpi3mr_tgt_dev *tgtdev = NULL;
1365 u16 dev_handle = 0, perst_id = 0;
1366
1367 perst_id = le16_to_cpu(dev_pg0->persistent_id);
1368 dev_handle = le16_to_cpu(dev_pg0->dev_handle);
1369 ioc_info(mrioc,
1370 "%s :Device info change: handle(0x%04x): persist_id(0x%x)\n",
1371 __func__, dev_handle, perst_id);
1372 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
1373 if (!tgtdev)
1374 goto out;
1375 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, false);
1376 if (!tgtdev->is_hidden && !tgtdev->host_exposed)
1377 mpi3mr_report_tgtdev_to_host(mrioc, perst_id);
1378 if (tgtdev->is_hidden && tgtdev->host_exposed)
1379 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1380 if (!tgtdev->is_hidden && tgtdev->host_exposed && tgtdev->starget)
1381 starget_for_each_device(tgtdev->starget, (void *)tgtdev,
1382 mpi3mr_update_sdev);
1383out:
1384 if (tgtdev)
1385 mpi3mr_tgtdev_put(tgtdev);
1386}
1387
1388/**
1389 * mpi3mr_free_enclosure_list - release enclosures
1390 * @mrioc: Adapter instance reference
1391 *
1392 * Free memory allocated during encloure add.
1393 *
1394 * Return nothing.
1395 */
1396void mpi3mr_free_enclosure_list(struct mpi3mr_ioc *mrioc)
1397{
1398 struct mpi3mr_enclosure_node *enclosure_dev, *enclosure_dev_next;
1399
1400 list_for_each_entry_safe(enclosure_dev,
1401 enclosure_dev_next, &mrioc->enclosure_list, list) {
1402 list_del(&enclosure_dev->list);
1403 kfree(enclosure_dev);
1404 }
1405}
1406
1407/**
1408 * mpi3mr_enclosure_find_by_handle - enclosure search by handle
1409 * @mrioc: Adapter instance reference
1410 * @handle: Firmware device handle of the enclosure
1411 *
1412 * This searches for enclosure device based on handle, then returns the
1413 * enclosure object.
1414 *
1415 * Return: Enclosure object reference or NULL
1416 */
1417struct mpi3mr_enclosure_node *mpi3mr_enclosure_find_by_handle(
1418 struct mpi3mr_ioc *mrioc, u16 handle)
1419{
1420 struct mpi3mr_enclosure_node *enclosure_dev, *r = NULL;
1421
1422 list_for_each_entry(enclosure_dev, &mrioc->enclosure_list, list) {
1423 if (le16_to_cpu(enclosure_dev->pg0.enclosure_handle) != handle)
1424 continue;
1425 r = enclosure_dev;
1426 goto out;
1427 }
1428out:
1429 return r;
1430}
1431
1432/**
1433 * mpi3mr_encldev_add_chg_evt_debug - debug for enclosure event
1434 * @mrioc: Adapter instance reference
1435 * @encl_pg0: Enclosure page 0.
1436 * @is_added: Added event or not
1437 *
1438 * Return nothing.
1439 */
1440static void mpi3mr_encldev_add_chg_evt_debug(struct mpi3mr_ioc *mrioc,
1441 struct mpi3_enclosure_page0 *encl_pg0, u8 is_added)
1442{
1443 char *reason_str = NULL;
1444
1445 if (!(mrioc->logging_level & MPI3_DEBUG_EVENT_WORK_TASK))
1446 return;
1447
1448 if (is_added)
1449 reason_str = "enclosure added";
1450 else
1451 reason_str = "enclosure dev status changed";
1452
1453 ioc_info(mrioc,
1454 "%s: handle(0x%04x), enclosure logical id(0x%016llx)\n",
1455 reason_str, le16_to_cpu(encl_pg0->enclosure_handle),
1456 (unsigned long long)le64_to_cpu(encl_pg0->enclosure_logical_id));
1457 ioc_info(mrioc,
1458 "number of slots(%d), port(%d), flags(0x%04x), present(%d)\n",
1459 le16_to_cpu(encl_pg0->num_slots), encl_pg0->io_unit_port,
1460 le16_to_cpu(encl_pg0->flags),
1461 ((le16_to_cpu(encl_pg0->flags) &
1462 MPI3_ENCLS0_FLAGS_ENCL_DEV_PRESENT_MASK) >> 4));
1463}
1464
1465/**
1466 * mpi3mr_encldev_add_chg_evt_bh - Enclosure evt bottomhalf
1467 * @mrioc: Adapter instance reference
1468 * @fwevt: Firmware event reference
1469 *
1470 * Prints information about the Enclosure device status or
1471 * Enclosure add events if logging is enabled and add or remove
1472 * the enclosure from the controller's internal list of
1473 * enclosures.
1474 *
1475 * Return: Nothing.
1476 */
1477static void mpi3mr_encldev_add_chg_evt_bh(struct mpi3mr_ioc *mrioc,
1478 struct mpi3mr_fwevt *fwevt)
1479{
1480 struct mpi3mr_enclosure_node *enclosure_dev = NULL;
1481 struct mpi3_enclosure_page0 *encl_pg0;
1482 u16 encl_handle;
1483 u8 added, present;
1484
1485 encl_pg0 = (struct mpi3_enclosure_page0 *) fwevt->event_data;
1486 added = (fwevt->event_id == MPI3_EVENT_ENCL_DEVICE_ADDED) ? 1 : 0;
1487 mpi3mr_encldev_add_chg_evt_debug(mrioc, encl_pg0, added);
1488
1489
1490 encl_handle = le16_to_cpu(encl_pg0->enclosure_handle);
1491 present = ((le16_to_cpu(encl_pg0->flags) &
1492 MPI3_ENCLS0_FLAGS_ENCL_DEV_PRESENT_MASK) >> 4);
1493
1494 if (encl_handle)
1495 enclosure_dev = mpi3mr_enclosure_find_by_handle(mrioc,
1496 encl_handle);
1497 if (!enclosure_dev && present) {
1498 enclosure_dev =
1499 kzalloc(sizeof(struct mpi3mr_enclosure_node),
1500 GFP_KERNEL);
1501 if (!enclosure_dev)
1502 return;
1503 list_add_tail(&enclosure_dev->list,
1504 &mrioc->enclosure_list);
1505 }
1506 if (enclosure_dev) {
1507 if (!present) {
1508 list_del(&enclosure_dev->list);
1509 kfree(enclosure_dev);
1510 } else
1511 memcpy(&enclosure_dev->pg0, encl_pg0,
1512 sizeof(enclosure_dev->pg0));
1513
1514 }
1515}
1516
1517/**
1518 * mpi3mr_sastopochg_evt_debug - SASTopoChange details
1519 * @mrioc: Adapter instance reference
1520 * @event_data: SAS topology change list event data
1521 *
1522 * Prints information about the SAS topology change event.
1523 *
1524 * Return: Nothing.
1525 */
1526static void
1527mpi3mr_sastopochg_evt_debug(struct mpi3mr_ioc *mrioc,
1528 struct mpi3_event_data_sas_topology_change_list *event_data)
1529{
1530 int i;
1531 u16 handle;
1532 u8 reason_code, phy_number;
1533 char *status_str = NULL;
1534 u8 link_rate, prev_link_rate;
1535
1536 switch (event_data->exp_status) {
1537 case MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING:
1538 status_str = "remove";
1539 break;
1540 case MPI3_EVENT_SAS_TOPO_ES_RESPONDING:
1541 status_str = "responding";
1542 break;
1543 case MPI3_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING:
1544 status_str = "remove delay";
1545 break;
1546 case MPI3_EVENT_SAS_TOPO_ES_NO_EXPANDER:
1547 status_str = "direct attached";
1548 break;
1549 default:
1550 status_str = "unknown status";
1551 break;
1552 }
1553 ioc_info(mrioc, "%s :sas topology change: (%s)\n",
1554 __func__, status_str);
1555 ioc_info(mrioc,
1556 "%s :\texpander_handle(0x%04x), port(%d), enclosure_handle(0x%04x) start_phy(%02d), num_entries(%d)\n",
1557 __func__, le16_to_cpu(event_data->expander_dev_handle),
1558 event_data->io_unit_port,
1559 le16_to_cpu(event_data->enclosure_handle),
1560 event_data->start_phy_num, event_data->num_entries);
1561 for (i = 0; i < event_data->num_entries; i++) {
1562 handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle);
1563 if (!handle)
1564 continue;
1565 phy_number = event_data->start_phy_num + i;
1566 reason_code = event_data->phy_entry[i].status &
1567 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
1568 switch (reason_code) {
1569 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
1570 status_str = "target remove";
1571 break;
1572 case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING:
1573 status_str = "delay target remove";
1574 break;
1575 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
1576 status_str = "link status change";
1577 break;
1578 case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE:
1579 status_str = "link status no change";
1580 break;
1581 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
1582 status_str = "target responding";
1583 break;
1584 default:
1585 status_str = "unknown";
1586 break;
1587 }
1588 link_rate = event_data->phy_entry[i].link_rate >> 4;
1589 prev_link_rate = event_data->phy_entry[i].link_rate & 0xF;
1590 ioc_info(mrioc,
1591 "%s :\tphy(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n",
1592 __func__, phy_number, handle, status_str, link_rate,
1593 prev_link_rate);
1594 }
1595}
1596
1597/**
1598 * mpi3mr_sastopochg_evt_bh - SASTopologyChange evt bottomhalf
1599 * @mrioc: Adapter instance reference
1600 * @fwevt: Firmware event reference
1601 *
1602 * Prints information about the SAS topology change event and
1603 * for "not responding" event code, removes the device from the
1604 * upper layers.
1605 *
1606 * Return: Nothing.
1607 */
1608static void mpi3mr_sastopochg_evt_bh(struct mpi3mr_ioc *mrioc,
1609 struct mpi3mr_fwevt *fwevt)
1610{
1611 struct mpi3_event_data_sas_topology_change_list *event_data =
1612 (struct mpi3_event_data_sas_topology_change_list *)fwevt->event_data;
1613 int i;
1614 u16 handle;
1615 u8 reason_code;
1616 u64 exp_sas_address = 0, parent_sas_address = 0;
1617 struct mpi3mr_hba_port *hba_port = NULL;
1618 struct mpi3mr_tgt_dev *tgtdev = NULL;
1619 struct mpi3mr_sas_node *sas_expander = NULL;
1620 unsigned long flags;
1621 u8 link_rate, prev_link_rate, parent_phy_number;
1622
1623 mpi3mr_sastopochg_evt_debug(mrioc, event_data);
1624 if (mrioc->sas_transport_enabled) {
1625 hba_port = mpi3mr_get_hba_port_by_id(mrioc,
1626 event_data->io_unit_port);
1627 if (le16_to_cpu(event_data->expander_dev_handle)) {
1628 spin_lock_irqsave(&mrioc->sas_node_lock, flags);
1629 sas_expander = __mpi3mr_expander_find_by_handle(mrioc,
1630 le16_to_cpu(event_data->expander_dev_handle));
1631 if (sas_expander) {
1632 exp_sas_address = sas_expander->sas_address;
1633 hba_port = sas_expander->hba_port;
1634 }
1635 spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
1636 parent_sas_address = exp_sas_address;
1637 } else
1638 parent_sas_address = mrioc->sas_hba.sas_address;
1639 }
1640
1641 for (i = 0; i < event_data->num_entries; i++) {
1642 if (fwevt->discard)
1643 return;
1644 handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle);
1645 if (!handle)
1646 continue;
1647 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
1648 if (!tgtdev)
1649 continue;
1650
1651 reason_code = event_data->phy_entry[i].status &
1652 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
1653
1654 switch (reason_code) {
1655 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
1656 if (tgtdev->host_exposed)
1657 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1658 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev, false);
1659 mpi3mr_tgtdev_put(tgtdev);
1660 break;
1661 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
1662 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
1663 case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE:
1664 {
1665 if (!mrioc->sas_transport_enabled || tgtdev->non_stl
1666 || tgtdev->is_hidden)
1667 break;
1668 link_rate = event_data->phy_entry[i].link_rate >> 4;
1669 prev_link_rate = event_data->phy_entry[i].link_rate & 0xF;
1670 if (link_rate == prev_link_rate)
1671 break;
1672 if (!parent_sas_address)
1673 break;
1674 parent_phy_number = event_data->start_phy_num + i;
1675 mpi3mr_update_links(mrioc, parent_sas_address, handle,
1676 parent_phy_number, link_rate, hba_port);
1677 break;
1678 }
1679 default:
1680 break;
1681 }
1682 if (tgtdev)
1683 mpi3mr_tgtdev_put(tgtdev);
1684 }
1685
1686 if (mrioc->sas_transport_enabled && (event_data->exp_status ==
1687 MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING)) {
1688 if (sas_expander)
1689 mpi3mr_expander_remove(mrioc, exp_sas_address,
1690 hba_port);
1691 }
1692}
1693
1694/**
1695 * mpi3mr_pcietopochg_evt_debug - PCIeTopoChange details
1696 * @mrioc: Adapter instance reference
1697 * @event_data: PCIe topology change list event data
1698 *
1699 * Prints information about the PCIe topology change event.
1700 *
1701 * Return: Nothing.
1702 */
1703static void
1704mpi3mr_pcietopochg_evt_debug(struct mpi3mr_ioc *mrioc,
1705 struct mpi3_event_data_pcie_topology_change_list *event_data)
1706{
1707 int i;
1708 u16 handle;
1709 u16 reason_code;
1710 u8 port_number;
1711 char *status_str = NULL;
1712 u8 link_rate, prev_link_rate;
1713
1714 switch (event_data->switch_status) {
1715 case MPI3_EVENT_PCIE_TOPO_SS_NOT_RESPONDING:
1716 status_str = "remove";
1717 break;
1718 case MPI3_EVENT_PCIE_TOPO_SS_RESPONDING:
1719 status_str = "responding";
1720 break;
1721 case MPI3_EVENT_PCIE_TOPO_SS_DELAY_NOT_RESPONDING:
1722 status_str = "remove delay";
1723 break;
1724 case MPI3_EVENT_PCIE_TOPO_SS_NO_PCIE_SWITCH:
1725 status_str = "direct attached";
1726 break;
1727 default:
1728 status_str = "unknown status";
1729 break;
1730 }
1731 ioc_info(mrioc, "%s :pcie topology change: (%s)\n",
1732 __func__, status_str);
1733 ioc_info(mrioc,
1734 "%s :\tswitch_handle(0x%04x), enclosure_handle(0x%04x) start_port(%02d), num_entries(%d)\n",
1735 __func__, le16_to_cpu(event_data->switch_dev_handle),
1736 le16_to_cpu(event_data->enclosure_handle),
1737 event_data->start_port_num, event_data->num_entries);
1738 for (i = 0; i < event_data->num_entries; i++) {
1739 handle =
1740 le16_to_cpu(event_data->port_entry[i].attached_dev_handle);
1741 if (!handle)
1742 continue;
1743 port_number = event_data->start_port_num + i;
1744 reason_code = event_data->port_entry[i].port_status;
1745 switch (reason_code) {
1746 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
1747 status_str = "target remove";
1748 break;
1749 case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING:
1750 status_str = "delay target remove";
1751 break;
1752 case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED:
1753 status_str = "link status change";
1754 break;
1755 case MPI3_EVENT_PCIE_TOPO_PS_NO_CHANGE:
1756 status_str = "link status no change";
1757 break;
1758 case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING:
1759 status_str = "target responding";
1760 break;
1761 default:
1762 status_str = "unknown";
1763 break;
1764 }
1765 link_rate = event_data->port_entry[i].current_port_info &
1766 MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK;
1767 prev_link_rate = event_data->port_entry[i].previous_port_info &
1768 MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK;
1769 ioc_info(mrioc,
1770 "%s :\tport(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n",
1771 __func__, port_number, handle, status_str, link_rate,
1772 prev_link_rate);
1773 }
1774}
1775
1776/**
1777 * mpi3mr_pcietopochg_evt_bh - PCIeTopologyChange evt bottomhalf
1778 * @mrioc: Adapter instance reference
1779 * @fwevt: Firmware event reference
1780 *
1781 * Prints information about the PCIe topology change event and
1782 * for "not responding" event code, removes the device from the
1783 * upper layers.
1784 *
1785 * Return: Nothing.
1786 */
1787static void mpi3mr_pcietopochg_evt_bh(struct mpi3mr_ioc *mrioc,
1788 struct mpi3mr_fwevt *fwevt)
1789{
1790 struct mpi3_event_data_pcie_topology_change_list *event_data =
1791 (struct mpi3_event_data_pcie_topology_change_list *)fwevt->event_data;
1792 int i;
1793 u16 handle;
1794 u8 reason_code;
1795 struct mpi3mr_tgt_dev *tgtdev = NULL;
1796
1797 mpi3mr_pcietopochg_evt_debug(mrioc, event_data);
1798
1799 for (i = 0; i < event_data->num_entries; i++) {
1800 if (fwevt->discard)
1801 return;
1802 handle =
1803 le16_to_cpu(event_data->port_entry[i].attached_dev_handle);
1804 if (!handle)
1805 continue;
1806 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
1807 if (!tgtdev)
1808 continue;
1809
1810 reason_code = event_data->port_entry[i].port_status;
1811
1812 switch (reason_code) {
1813 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
1814 if (tgtdev->host_exposed)
1815 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
1816 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev, false);
1817 mpi3mr_tgtdev_put(tgtdev);
1818 break;
1819 default:
1820 break;
1821 }
1822 if (tgtdev)
1823 mpi3mr_tgtdev_put(tgtdev);
1824 }
1825}
1826
1827/**
1828 * mpi3mr_logdata_evt_bh - Log data event bottomhalf
1829 * @mrioc: Adapter instance reference
1830 * @fwevt: Firmware event reference
1831 *
1832 * Extracts the event data and calls application interfacing
1833 * function to process the event further.
1834 *
1835 * Return: Nothing.
1836 */
1837static void mpi3mr_logdata_evt_bh(struct mpi3mr_ioc *mrioc,
1838 struct mpi3mr_fwevt *fwevt)
1839{
1840 mpi3mr_app_save_logdata(mrioc, fwevt->event_data,
1841 fwevt->event_data_size);
1842}
1843
1844/**
1845 * mpi3mr_update_sdev_qd - Update SCSI device queue depath
1846 * @sdev: SCSI device reference
1847 * @data: Queue depth reference
1848 *
1849 * This is an iterator function called for each SCSI device in a
1850 * target to update the QD of each SCSI device.
1851 *
1852 * Return: Nothing.
1853 */
1854static void mpi3mr_update_sdev_qd(struct scsi_device *sdev, void *data)
1855{
1856 u16 *q_depth = (u16 *)data;
1857
1858 scsi_change_queue_depth(sdev, (int)*q_depth);
1859 sdev->max_queue_depth = sdev->queue_depth;
1860}
1861
1862/**
1863 * mpi3mr_set_qd_for_all_vd_in_tg -set QD for TG VDs
1864 * @mrioc: Adapter instance reference
1865 * @tg: Throttle group information pointer
1866 *
1867 * Accessor to reduce QD for each device associated with the
1868 * given throttle group.
1869 *
1870 * Return: None.
1871 */
1872static void mpi3mr_set_qd_for_all_vd_in_tg(struct mpi3mr_ioc *mrioc,
1873 struct mpi3mr_throttle_group_info *tg)
1874{
1875 unsigned long flags;
1876 struct mpi3mr_tgt_dev *tgtdev;
1877 struct mpi3mr_stgt_priv_data *tgt_priv;
1878
1879
1880 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
1881 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) {
1882 if (tgtdev->starget && tgtdev->starget->hostdata) {
1883 tgt_priv = tgtdev->starget->hostdata;
1884 if (tgt_priv->throttle_group == tg) {
1885 dprint_event_bh(mrioc,
1886 "updating qd due to throttling for persist_id(%d) original_qd(%d), reduced_qd (%d)\n",
1887 tgt_priv->perst_id, tgtdev->q_depth,
1888 tg->modified_qd);
1889 starget_for_each_device(tgtdev->starget,
1890 (void *)&tg->modified_qd,
1891 mpi3mr_update_sdev_qd);
1892 }
1893 }
1894 }
1895 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
1896}
1897
1898/**
1899 * mpi3mr_fwevt_bh - Firmware event bottomhalf handler
1900 * @mrioc: Adapter instance reference
1901 * @fwevt: Firmware event reference
1902 *
1903 * Identifies the firmware event and calls corresponding bottomg
1904 * half handler and sends event acknowledgment if required.
1905 *
1906 * Return: Nothing.
1907 */
1908static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc,
1909 struct mpi3mr_fwevt *fwevt)
1910{
1911 struct mpi3_device_page0 *dev_pg0 = NULL;
1912 u16 perst_id, handle, dev_info;
1913 struct mpi3_device0_sas_sata_format *sasinf = NULL;
1914
1915 mpi3mr_fwevt_del_from_list(mrioc, fwevt);
1916 mrioc->current_event = fwevt;
1917
1918 if (mrioc->stop_drv_processing)
1919 goto out;
1920
1921 if (mrioc->unrecoverable) {
1922 dprint_event_bh(mrioc,
1923 "ignoring event(0x%02x) in bottom half handler due to unrecoverable controller\n",
1924 fwevt->event_id);
1925 goto out;
1926 }
1927
1928 if (!fwevt->process_evt)
1929 goto evt_ack;
1930
1931 switch (fwevt->event_id) {
1932 case MPI3_EVENT_DEVICE_ADDED:
1933 {
1934 dev_pg0 = (struct mpi3_device_page0 *)fwevt->event_data;
1935 perst_id = le16_to_cpu(dev_pg0->persistent_id);
1936 handle = le16_to_cpu(dev_pg0->dev_handle);
1937 if (perst_id != MPI3_DEVICE0_PERSISTENTID_INVALID)
1938 mpi3mr_report_tgtdev_to_host(mrioc, perst_id);
1939 else if (mrioc->sas_transport_enabled &&
1940 (dev_pg0->device_form == MPI3_DEVICE_DEVFORM_SAS_SATA)) {
1941 sasinf = &dev_pg0->device_specific.sas_sata_format;
1942 dev_info = le16_to_cpu(sasinf->device_info);
1943 if (!mrioc->sas_hba.num_phys)
1944 mpi3mr_sas_host_add(mrioc);
1945 else
1946 mpi3mr_sas_host_refresh(mrioc);
1947
1948 if (mpi3mr_is_expander_device(dev_info))
1949 mpi3mr_expander_add(mrioc, handle);
1950 }
1951 break;
1952 }
1953 case MPI3_EVENT_DEVICE_INFO_CHANGED:
1954 {
1955 dev_pg0 = (struct mpi3_device_page0 *)fwevt->event_data;
1956 perst_id = le16_to_cpu(dev_pg0->persistent_id);
1957 if (perst_id != MPI3_DEVICE0_PERSISTENTID_INVALID)
1958 mpi3mr_devinfochg_evt_bh(mrioc, dev_pg0);
1959 break;
1960 }
1961 case MPI3_EVENT_DEVICE_STATUS_CHANGE:
1962 {
1963 mpi3mr_devstatuschg_evt_bh(mrioc, fwevt);
1964 break;
1965 }
1966 case MPI3_EVENT_ENCL_DEVICE_ADDED:
1967 case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE:
1968 {
1969 mpi3mr_encldev_add_chg_evt_bh(mrioc, fwevt);
1970 break;
1971 }
1972
1973 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
1974 {
1975 mpi3mr_sastopochg_evt_bh(mrioc, fwevt);
1976 break;
1977 }
1978 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
1979 {
1980 mpi3mr_pcietopochg_evt_bh(mrioc, fwevt);
1981 break;
1982 }
1983 case MPI3_EVENT_LOG_DATA:
1984 {
1985 mpi3mr_logdata_evt_bh(mrioc, fwevt);
1986 break;
1987 }
1988 case MPI3MR_DRIVER_EVENT_TG_QD_REDUCTION:
1989 {
1990 struct mpi3mr_throttle_group_info *tg;
1991
1992 tg = *(struct mpi3mr_throttle_group_info **)fwevt->event_data;
1993 dprint_event_bh(mrioc,
1994 "qd reduction event processed for tg_id(%d) reduction_needed(%d)\n",
1995 tg->id, tg->need_qd_reduction);
1996 if (tg->need_qd_reduction) {
1997 mpi3mr_set_qd_for_all_vd_in_tg(mrioc, tg);
1998 tg->need_qd_reduction = 0;
1999 }
2000 break;
2001 }
2002 case MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH:
2003 {
2004 while (mrioc->device_refresh_on)
2005 msleep(500);
2006
2007 dprint_event_bh(mrioc,
2008 "scan for non responding and newly added devices after soft reset started\n");
2009 if (mrioc->sas_transport_enabled) {
2010 mpi3mr_refresh_sas_ports(mrioc);
2011 mpi3mr_refresh_expanders(mrioc);
2012 }
2013 mpi3mr_rfresh_tgtdevs(mrioc);
2014 ioc_info(mrioc,
2015 "scan for non responding and newly added devices after soft reset completed\n");
2016 break;
2017 }
2018 default:
2019 break;
2020 }
2021
2022evt_ack:
2023 if (fwevt->send_ack)
2024 mpi3mr_process_event_ack(mrioc, fwevt->event_id,
2025 fwevt->evt_ctx);
2026out:
2027 /* Put fwevt reference count to neutralize kref_init increment */
2028 mpi3mr_fwevt_put(fwevt);
2029 mrioc->current_event = NULL;
2030}
2031
2032/**
2033 * mpi3mr_fwevt_worker - Firmware event worker
2034 * @work: Work struct containing firmware event
2035 *
2036 * Extracts the firmware event and calls mpi3mr_fwevt_bh.
2037 *
2038 * Return: Nothing.
2039 */
2040static void mpi3mr_fwevt_worker(struct work_struct *work)
2041{
2042 struct mpi3mr_fwevt *fwevt = container_of(work, struct mpi3mr_fwevt,
2043 work);
2044 mpi3mr_fwevt_bh(fwevt->mrioc, fwevt);
2045 /*
2046 * Put fwevt reference count after
2047 * dequeuing it from worker queue
2048 */
2049 mpi3mr_fwevt_put(fwevt);
2050}
2051
2052/**
2053 * mpi3mr_create_tgtdev - Create and add a target device
2054 * @mrioc: Adapter instance reference
2055 * @dev_pg0: Device Page 0 data
2056 *
2057 * If the device specified by the device page 0 data is not
2058 * present in the driver's internal list, allocate the memory
2059 * for the device, populate the data and add to the list, else
2060 * update the device data. The key is persistent ID.
2061 *
2062 * Return: 0 on success, -ENOMEM on memory allocation failure
2063 */
2064static int mpi3mr_create_tgtdev(struct mpi3mr_ioc *mrioc,
2065 struct mpi3_device_page0 *dev_pg0)
2066{
2067 int retval = 0;
2068 struct mpi3mr_tgt_dev *tgtdev = NULL;
2069 u16 perst_id = 0;
2070 unsigned long flags;
2071
2072 perst_id = le16_to_cpu(dev_pg0->persistent_id);
2073 if (perst_id == MPI3_DEVICE0_PERSISTENTID_INVALID)
2074 return retval;
2075
2076 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
2077 tgtdev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id);
2078 if (tgtdev)
2079 tgtdev->state = MPI3MR_DEV_CREATED;
2080 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
2081
2082 if (tgtdev) {
2083 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, true);
2084 mpi3mr_tgtdev_put(tgtdev);
2085 } else {
2086 tgtdev = mpi3mr_alloc_tgtdev();
2087 if (!tgtdev)
2088 return -ENOMEM;
2089 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, true);
2090 mpi3mr_tgtdev_add_to_list(mrioc, tgtdev);
2091 }
2092
2093 return retval;
2094}
2095
2096/**
2097 * mpi3mr_flush_delayed_cmd_lists - Flush pending commands
2098 * @mrioc: Adapter instance reference
2099 *
2100 * Flush pending commands in the delayed lists due to a
2101 * controller reset or driver removal as a cleanup.
2102 *
2103 * Return: Nothing
2104 */
2105void mpi3mr_flush_delayed_cmd_lists(struct mpi3mr_ioc *mrioc)
2106{
2107 struct delayed_dev_rmhs_node *_rmhs_node;
2108 struct delayed_evt_ack_node *_evtack_node;
2109
2110 dprint_reset(mrioc, "flushing delayed dev_remove_hs commands\n");
2111 while (!list_empty(&mrioc->delayed_rmhs_list)) {
2112 _rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
2113 struct delayed_dev_rmhs_node, list);
2114 list_del(&_rmhs_node->list);
2115 kfree(_rmhs_node);
2116 }
2117 dprint_reset(mrioc, "flushing delayed event ack commands\n");
2118 while (!list_empty(&mrioc->delayed_evtack_cmds_list)) {
2119 _evtack_node = list_entry(mrioc->delayed_evtack_cmds_list.next,
2120 struct delayed_evt_ack_node, list);
2121 list_del(&_evtack_node->list);
2122 kfree(_evtack_node);
2123 }
2124}
2125
2126/**
2127 * mpi3mr_dev_rmhs_complete_iou - Device removal IOUC completion
2128 * @mrioc: Adapter instance reference
2129 * @drv_cmd: Internal command tracker
2130 *
2131 * Issues a target reset TM to the firmware from the device
2132 * removal TM pend list or retry the removal handshake sequence
2133 * based on the IOU control request IOC status.
2134 *
2135 * Return: Nothing
2136 */
2137static void mpi3mr_dev_rmhs_complete_iou(struct mpi3mr_ioc *mrioc,
2138 struct mpi3mr_drv_cmd *drv_cmd)
2139{
2140 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
2141 struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL;
2142
2143 if (drv_cmd->state & MPI3MR_CMD_RESET)
2144 goto clear_drv_cmd;
2145
2146 ioc_info(mrioc,
2147 "%s :dev_rmhs_iouctrl_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x)\n",
2148 __func__, drv_cmd->dev_handle, drv_cmd->ioc_status,
2149 drv_cmd->ioc_loginfo);
2150 if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
2151 if (drv_cmd->retry_count < MPI3MR_DEV_RMHS_RETRY_COUNT) {
2152 drv_cmd->retry_count++;
2153 ioc_info(mrioc,
2154 "%s :dev_rmhs_iouctrl_complete: handle(0x%04x)retrying handshake retry=%d\n",
2155 __func__, drv_cmd->dev_handle,
2156 drv_cmd->retry_count);
2157 mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle,
2158 drv_cmd, drv_cmd->iou_rc);
2159 return;
2160 }
2161 ioc_err(mrioc,
2162 "%s :dev removal handshake failed after all retries: handle(0x%04x)\n",
2163 __func__, drv_cmd->dev_handle);
2164 } else {
2165 ioc_info(mrioc,
2166 "%s :dev removal handshake completed successfully: handle(0x%04x)\n",
2167 __func__, drv_cmd->dev_handle);
2168 clear_bit(drv_cmd->dev_handle, mrioc->removepend_bitmap);
2169 }
2170
2171 if (!list_empty(&mrioc->delayed_rmhs_list)) {
2172 delayed_dev_rmhs = list_entry(mrioc->delayed_rmhs_list.next,
2173 struct delayed_dev_rmhs_node, list);
2174 drv_cmd->dev_handle = delayed_dev_rmhs->handle;
2175 drv_cmd->retry_count = 0;
2176 drv_cmd->iou_rc = delayed_dev_rmhs->iou_rc;
2177 ioc_info(mrioc,
2178 "%s :dev_rmhs_iouctrl_complete: processing delayed TM: handle(0x%04x)\n",
2179 __func__, drv_cmd->dev_handle);
2180 mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle, drv_cmd,
2181 drv_cmd->iou_rc);
2182 list_del(&delayed_dev_rmhs->list);
2183 kfree(delayed_dev_rmhs);
2184 return;
2185 }
2186
2187clear_drv_cmd:
2188 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2189 drv_cmd->callback = NULL;
2190 drv_cmd->retry_count = 0;
2191 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
2192 clear_bit(cmd_idx, mrioc->devrem_bitmap);
2193}
2194
2195/**
2196 * mpi3mr_dev_rmhs_complete_tm - Device removal TM completion
2197 * @mrioc: Adapter instance reference
2198 * @drv_cmd: Internal command tracker
2199 *
2200 * Issues a target reset TM to the firmware from the device
2201 * removal TM pend list or issue IO unit control request as
2202 * part of device removal or hidden acknowledgment handshake.
2203 *
2204 * Return: Nothing
2205 */
2206static void mpi3mr_dev_rmhs_complete_tm(struct mpi3mr_ioc *mrioc,
2207 struct mpi3mr_drv_cmd *drv_cmd)
2208{
2209 struct mpi3_iounit_control_request iou_ctrl;
2210 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
2211 struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL;
2212 int retval;
2213
2214 if (drv_cmd->state & MPI3MR_CMD_RESET)
2215 goto clear_drv_cmd;
2216
2217 if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID)
2218 tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
2219
2220 if (tm_reply)
2221 pr_info(IOCNAME
2222 "dev_rmhs_tr_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x), term_count(%d)\n",
2223 mrioc->name, drv_cmd->dev_handle, drv_cmd->ioc_status,
2224 drv_cmd->ioc_loginfo,
2225 le32_to_cpu(tm_reply->termination_count));
2226
2227 pr_info(IOCNAME "Issuing IOU CTL: handle(0x%04x) dev_rmhs idx(%d)\n",
2228 mrioc->name, drv_cmd->dev_handle, cmd_idx);
2229
2230 memset(&iou_ctrl, 0, sizeof(iou_ctrl));
2231
2232 drv_cmd->state = MPI3MR_CMD_PENDING;
2233 drv_cmd->is_waiting = 0;
2234 drv_cmd->callback = mpi3mr_dev_rmhs_complete_iou;
2235 iou_ctrl.operation = drv_cmd->iou_rc;
2236 iou_ctrl.param16[0] = cpu_to_le16(drv_cmd->dev_handle);
2237 iou_ctrl.host_tag = cpu_to_le16(drv_cmd->host_tag);
2238 iou_ctrl.function = MPI3_FUNCTION_IO_UNIT_CONTROL;
2239
2240 retval = mpi3mr_admin_request_post(mrioc, &iou_ctrl, sizeof(iou_ctrl),
2241 1);
2242 if (retval) {
2243 pr_err(IOCNAME "Issue DevRmHsTMIOUCTL: Admin post failed\n",
2244 mrioc->name);
2245 goto clear_drv_cmd;
2246 }
2247
2248 return;
2249clear_drv_cmd:
2250 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2251 drv_cmd->callback = NULL;
2252 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
2253 drv_cmd->retry_count = 0;
2254 clear_bit(cmd_idx, mrioc->devrem_bitmap);
2255}
2256
2257/**
2258 * mpi3mr_dev_rmhs_send_tm - Issue TM for device removal
2259 * @mrioc: Adapter instance reference
2260 * @handle: Device handle
2261 * @cmdparam: Internal command tracker
2262 * @iou_rc: IO unit reason code
2263 *
2264 * Issues a target reset TM to the firmware or add it to a pend
2265 * list as part of device removal or hidden acknowledgment
2266 * handshake.
2267 *
2268 * Return: Nothing
2269 */
2270static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
2271 struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc)
2272{
2273 struct mpi3_scsi_task_mgmt_request tm_req;
2274 int retval = 0;
2275 u16 cmd_idx = MPI3MR_NUM_DEVRMCMD;
2276 u8 retrycount = 5;
2277 struct mpi3mr_drv_cmd *drv_cmd = cmdparam;
2278 struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL;
2279 struct mpi3mr_tgt_dev *tgtdev = NULL;
2280 unsigned long flags;
2281
2282 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
2283 tgtdev = __mpi3mr_get_tgtdev_by_handle(mrioc, handle);
2284 if (tgtdev && (iou_rc == MPI3_CTRL_OP_REMOVE_DEVICE))
2285 tgtdev->state = MPI3MR_DEV_REMOVE_HS_STARTED;
2286 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
2287
2288 if (drv_cmd)
2289 goto issue_cmd;
2290 do {
2291 cmd_idx = find_first_zero_bit(mrioc->devrem_bitmap,
2292 MPI3MR_NUM_DEVRMCMD);
2293 if (cmd_idx < MPI3MR_NUM_DEVRMCMD) {
2294 if (!test_and_set_bit(cmd_idx, mrioc->devrem_bitmap))
2295 break;
2296 cmd_idx = MPI3MR_NUM_DEVRMCMD;
2297 }
2298 } while (retrycount--);
2299
2300 if (cmd_idx >= MPI3MR_NUM_DEVRMCMD) {
2301 delayed_dev_rmhs = kzalloc(sizeof(*delayed_dev_rmhs),
2302 GFP_ATOMIC);
2303 if (!delayed_dev_rmhs)
2304 return;
2305 INIT_LIST_HEAD(&delayed_dev_rmhs->list);
2306 delayed_dev_rmhs->handle = handle;
2307 delayed_dev_rmhs->iou_rc = iou_rc;
2308 list_add_tail(&delayed_dev_rmhs->list,
2309 &mrioc->delayed_rmhs_list);
2310 ioc_info(mrioc, "%s :DevRmHs: tr:handle(0x%04x) is postponed\n",
2311 __func__, handle);
2312 return;
2313 }
2314 drv_cmd = &mrioc->dev_rmhs_cmds[cmd_idx];
2315
2316issue_cmd:
2317 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN;
2318 ioc_info(mrioc,
2319 "%s :Issuing TR TM: for devhandle 0x%04x with dev_rmhs %d\n",
2320 __func__, handle, cmd_idx);
2321
2322 memset(&tm_req, 0, sizeof(tm_req));
2323 if (drv_cmd->state & MPI3MR_CMD_PENDING) {
2324 ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__);
2325 goto out;
2326 }
2327 drv_cmd->state = MPI3MR_CMD_PENDING;
2328 drv_cmd->is_waiting = 0;
2329 drv_cmd->callback = mpi3mr_dev_rmhs_complete_tm;
2330 drv_cmd->dev_handle = handle;
2331 drv_cmd->iou_rc = iou_rc;
2332 tm_req.dev_handle = cpu_to_le16(handle);
2333 tm_req.task_type = MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET;
2334 tm_req.host_tag = cpu_to_le16(drv_cmd->host_tag);
2335 tm_req.task_host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INVALID);
2336 tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT;
2337
2338 set_bit(handle, mrioc->removepend_bitmap);
2339 retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1);
2340 if (retval) {
2341 ioc_err(mrioc, "%s :Issue DevRmHsTM: Admin Post failed\n",
2342 __func__);
2343 goto out_failed;
2344 }
2345out:
2346 return;
2347out_failed:
2348 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2349 drv_cmd->callback = NULL;
2350 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
2351 drv_cmd->retry_count = 0;
2352 clear_bit(cmd_idx, mrioc->devrem_bitmap);
2353}
2354
2355/**
2356 * mpi3mr_complete_evt_ack - event ack request completion
2357 * @mrioc: Adapter instance reference
2358 * @drv_cmd: Internal command tracker
2359 *
2360 * This is the completion handler for non blocking event
2361 * acknowledgment sent to the firmware and this will issue any
2362 * pending event acknowledgment request.
2363 *
2364 * Return: Nothing
2365 */
2366static void mpi3mr_complete_evt_ack(struct mpi3mr_ioc *mrioc,
2367 struct mpi3mr_drv_cmd *drv_cmd)
2368{
2369 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_EVTACKCMD_MIN;
2370 struct delayed_evt_ack_node *delayed_evtack = NULL;
2371
2372 if (drv_cmd->state & MPI3MR_CMD_RESET)
2373 goto clear_drv_cmd;
2374
2375 if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) {
2376 dprint_event_th(mrioc,
2377 "immediate event ack failed with ioc_status(0x%04x) log_info(0x%08x)\n",
2378 (drv_cmd->ioc_status & MPI3_IOCSTATUS_STATUS_MASK),
2379 drv_cmd->ioc_loginfo);
2380 }
2381
2382 if (!list_empty(&mrioc->delayed_evtack_cmds_list)) {
2383 delayed_evtack =
2384 list_entry(mrioc->delayed_evtack_cmds_list.next,
2385 struct delayed_evt_ack_node, list);
2386 mpi3mr_send_event_ack(mrioc, delayed_evtack->event, drv_cmd,
2387 delayed_evtack->event_ctx);
2388 list_del(&delayed_evtack->list);
2389 kfree(delayed_evtack);
2390 return;
2391 }
2392clear_drv_cmd:
2393 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2394 drv_cmd->callback = NULL;
2395 clear_bit(cmd_idx, mrioc->evtack_cmds_bitmap);
2396}
2397
2398/**
2399 * mpi3mr_send_event_ack - Issue event acknwoledgment request
2400 * @mrioc: Adapter instance reference
2401 * @event: MPI3 event id
2402 * @cmdparam: Internal command tracker
2403 * @event_ctx: event context
2404 *
2405 * Issues event acknowledgment request to the firmware if there
2406 * is a free command to send the event ack else it to a pend
2407 * list so that it will be processed on a completion of a prior
2408 * event acknowledgment .
2409 *
2410 * Return: Nothing
2411 */
2412static void mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event,
2413 struct mpi3mr_drv_cmd *cmdparam, u32 event_ctx)
2414{
2415 struct mpi3_event_ack_request evtack_req;
2416 int retval = 0;
2417 u8 retrycount = 5;
2418 u16 cmd_idx = MPI3MR_NUM_EVTACKCMD;
2419 struct mpi3mr_drv_cmd *drv_cmd = cmdparam;
2420 struct delayed_evt_ack_node *delayed_evtack = NULL;
2421
2422 if (drv_cmd) {
2423 dprint_event_th(mrioc,
2424 "sending delayed event ack in the top half for event(0x%02x), event_ctx(0x%08x)\n",
2425 event, event_ctx);
2426 goto issue_cmd;
2427 }
2428 dprint_event_th(mrioc,
2429 "sending event ack in the top half for event(0x%02x), event_ctx(0x%08x)\n",
2430 event, event_ctx);
2431 do {
2432 cmd_idx = find_first_zero_bit(mrioc->evtack_cmds_bitmap,
2433 MPI3MR_NUM_EVTACKCMD);
2434 if (cmd_idx < MPI3MR_NUM_EVTACKCMD) {
2435 if (!test_and_set_bit(cmd_idx,
2436 mrioc->evtack_cmds_bitmap))
2437 break;
2438 cmd_idx = MPI3MR_NUM_EVTACKCMD;
2439 }
2440 } while (retrycount--);
2441
2442 if (cmd_idx >= MPI3MR_NUM_EVTACKCMD) {
2443 delayed_evtack = kzalloc(sizeof(*delayed_evtack),
2444 GFP_ATOMIC);
2445 if (!delayed_evtack)
2446 return;
2447 INIT_LIST_HEAD(&delayed_evtack->list);
2448 delayed_evtack->event = event;
2449 delayed_evtack->event_ctx = event_ctx;
2450 list_add_tail(&delayed_evtack->list,
2451 &mrioc->delayed_evtack_cmds_list);
2452 dprint_event_th(mrioc,
2453 "event ack in the top half for event(0x%02x), event_ctx(0x%08x) is postponed\n",
2454 event, event_ctx);
2455 return;
2456 }
2457 drv_cmd = &mrioc->evtack_cmds[cmd_idx];
2458
2459issue_cmd:
2460 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_EVTACKCMD_MIN;
2461
2462 memset(&evtack_req, 0, sizeof(evtack_req));
2463 if (drv_cmd->state & MPI3MR_CMD_PENDING) {
2464 dprint_event_th(mrioc,
2465 "sending event ack failed due to command in use\n");
2466 goto out;
2467 }
2468 drv_cmd->state = MPI3MR_CMD_PENDING;
2469 drv_cmd->is_waiting = 0;
2470 drv_cmd->callback = mpi3mr_complete_evt_ack;
2471 evtack_req.host_tag = cpu_to_le16(drv_cmd->host_tag);
2472 evtack_req.function = MPI3_FUNCTION_EVENT_ACK;
2473 evtack_req.event = event;
2474 evtack_req.event_context = cpu_to_le32(event_ctx);
2475 retval = mpi3mr_admin_request_post(mrioc, &evtack_req,
2476 sizeof(evtack_req), 1);
2477 if (retval) {
2478 dprint_event_th(mrioc,
2479 "posting event ack request is failed\n");
2480 goto out_failed;
2481 }
2482
2483 dprint_event_th(mrioc,
2484 "event ack in the top half for event(0x%02x), event_ctx(0x%08x) is posted\n",
2485 event, event_ctx);
2486out:
2487 return;
2488out_failed:
2489 drv_cmd->state = MPI3MR_CMD_NOTUSED;
2490 drv_cmd->callback = NULL;
2491 clear_bit(cmd_idx, mrioc->evtack_cmds_bitmap);
2492}
2493
2494/**
2495 * mpi3mr_pcietopochg_evt_th - PCIETopologyChange evt tophalf
2496 * @mrioc: Adapter instance reference
2497 * @event_reply: event data
2498 *
2499 * Checks for the reason code and based on that either block I/O
2500 * to device, or unblock I/O to the device, or start the device
2501 * removal handshake with reason as remove with the firmware for
2502 * PCIe devices.
2503 *
2504 * Return: Nothing
2505 */
2506static void mpi3mr_pcietopochg_evt_th(struct mpi3mr_ioc *mrioc,
2507 struct mpi3_event_notification_reply *event_reply)
2508{
2509 struct mpi3_event_data_pcie_topology_change_list *topo_evt =
2510 (struct mpi3_event_data_pcie_topology_change_list *)event_reply->event_data;
2511 int i;
2512 u16 handle;
2513 u8 reason_code;
2514 struct mpi3mr_tgt_dev *tgtdev = NULL;
2515 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
2516
2517 for (i = 0; i < topo_evt->num_entries; i++) {
2518 handle = le16_to_cpu(topo_evt->port_entry[i].attached_dev_handle);
2519 if (!handle)
2520 continue;
2521 reason_code = topo_evt->port_entry[i].port_status;
2522 scsi_tgt_priv_data = NULL;
2523 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
2524 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
2525 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
2526 tgtdev->starget->hostdata;
2527 switch (reason_code) {
2528 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING:
2529 if (scsi_tgt_priv_data) {
2530 scsi_tgt_priv_data->dev_removed = 1;
2531 scsi_tgt_priv_data->dev_removedelay = 0;
2532 atomic_set(&scsi_tgt_priv_data->block_io, 0);
2533 }
2534 mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL,
2535 MPI3_CTRL_OP_REMOVE_DEVICE);
2536 break;
2537 case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING:
2538 if (scsi_tgt_priv_data) {
2539 scsi_tgt_priv_data->dev_removedelay = 1;
2540 atomic_inc(&scsi_tgt_priv_data->block_io);
2541 }
2542 break;
2543 case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING:
2544 if (scsi_tgt_priv_data &&
2545 scsi_tgt_priv_data->dev_removedelay) {
2546 scsi_tgt_priv_data->dev_removedelay = 0;
2547 atomic_dec_if_positive
2548 (&scsi_tgt_priv_data->block_io);
2549 }
2550 break;
2551 case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED:
2552 default:
2553 break;
2554 }
2555 if (tgtdev)
2556 mpi3mr_tgtdev_put(tgtdev);
2557 }
2558}
2559
2560/**
2561 * mpi3mr_sastopochg_evt_th - SASTopologyChange evt tophalf
2562 * @mrioc: Adapter instance reference
2563 * @event_reply: event data
2564 *
2565 * Checks for the reason code and based on that either block I/O
2566 * to device, or unblock I/O to the device, or start the device
2567 * removal handshake with reason as remove with the firmware for
2568 * SAS/SATA devices.
2569 *
2570 * Return: Nothing
2571 */
2572static void mpi3mr_sastopochg_evt_th(struct mpi3mr_ioc *mrioc,
2573 struct mpi3_event_notification_reply *event_reply)
2574{
2575 struct mpi3_event_data_sas_topology_change_list *topo_evt =
2576 (struct mpi3_event_data_sas_topology_change_list *)event_reply->event_data;
2577 int i;
2578 u16 handle;
2579 u8 reason_code;
2580 struct mpi3mr_tgt_dev *tgtdev = NULL;
2581 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
2582
2583 for (i = 0; i < topo_evt->num_entries; i++) {
2584 handle = le16_to_cpu(topo_evt->phy_entry[i].attached_dev_handle);
2585 if (!handle)
2586 continue;
2587 reason_code = topo_evt->phy_entry[i].status &
2588 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK;
2589 scsi_tgt_priv_data = NULL;
2590 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
2591 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
2592 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
2593 tgtdev->starget->hostdata;
2594 switch (reason_code) {
2595 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING:
2596 if (scsi_tgt_priv_data) {
2597 scsi_tgt_priv_data->dev_removed = 1;
2598 scsi_tgt_priv_data->dev_removedelay = 0;
2599 atomic_set(&scsi_tgt_priv_data->block_io, 0);
2600 }
2601 mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL,
2602 MPI3_CTRL_OP_REMOVE_DEVICE);
2603 break;
2604 case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING:
2605 if (scsi_tgt_priv_data) {
2606 scsi_tgt_priv_data->dev_removedelay = 1;
2607 atomic_inc(&scsi_tgt_priv_data->block_io);
2608 }
2609 break;
2610 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING:
2611 if (scsi_tgt_priv_data &&
2612 scsi_tgt_priv_data->dev_removedelay) {
2613 scsi_tgt_priv_data->dev_removedelay = 0;
2614 atomic_dec_if_positive
2615 (&scsi_tgt_priv_data->block_io);
2616 }
2617 break;
2618 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED:
2619 default:
2620 break;
2621 }
2622 if (tgtdev)
2623 mpi3mr_tgtdev_put(tgtdev);
2624 }
2625}
2626
2627/**
2628 * mpi3mr_devstatuschg_evt_th - DeviceStatusChange evt tophalf
2629 * @mrioc: Adapter instance reference
2630 * @event_reply: event data
2631 *
2632 * Checks for the reason code and based on that either block I/O
2633 * to device, or unblock I/O to the device, or start the device
2634 * removal handshake with reason as remove/hide acknowledgment
2635 * with the firmware.
2636 *
2637 * Return: Nothing
2638 */
2639static void mpi3mr_devstatuschg_evt_th(struct mpi3mr_ioc *mrioc,
2640 struct mpi3_event_notification_reply *event_reply)
2641{
2642 u16 dev_handle = 0;
2643 u8 ublock = 0, block = 0, hide = 0, delete = 0, remove = 0;
2644 struct mpi3mr_tgt_dev *tgtdev = NULL;
2645 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
2646 struct mpi3_event_data_device_status_change *evtdata =
2647 (struct mpi3_event_data_device_status_change *)event_reply->event_data;
2648
2649 if (mrioc->stop_drv_processing)
2650 goto out;
2651
2652 dev_handle = le16_to_cpu(evtdata->dev_handle);
2653
2654 switch (evtdata->reason_code) {
2655 case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_STRT:
2656 case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_STRT:
2657 block = 1;
2658 break;
2659 case MPI3_EVENT_DEV_STAT_RC_HIDDEN:
2660 delete = 1;
2661 hide = 1;
2662 break;
2663 case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING:
2664 delete = 1;
2665 remove = 1;
2666 break;
2667 case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_CMP:
2668 case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_CMP:
2669 ublock = 1;
2670 break;
2671 default:
2672 break;
2673 }
2674
2675 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle);
2676 if (!tgtdev)
2677 goto out;
2678 if (hide)
2679 tgtdev->is_hidden = hide;
2680 if (tgtdev->starget && tgtdev->starget->hostdata) {
2681 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
2682 tgtdev->starget->hostdata;
2683 if (block)
2684 atomic_inc(&scsi_tgt_priv_data->block_io);
2685 if (delete)
2686 scsi_tgt_priv_data->dev_removed = 1;
2687 if (ublock)
2688 atomic_dec_if_positive(&scsi_tgt_priv_data->block_io);
2689 }
2690 if (remove)
2691 mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL,
2692 MPI3_CTRL_OP_REMOVE_DEVICE);
2693 if (hide)
2694 mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL,
2695 MPI3_CTRL_OP_HIDDEN_ACK);
2696
2697out:
2698 if (tgtdev)
2699 mpi3mr_tgtdev_put(tgtdev);
2700}
2701
2702/**
2703 * mpi3mr_preparereset_evt_th - Prepare for reset event tophalf
2704 * @mrioc: Adapter instance reference
2705 * @event_reply: event data
2706 *
2707 * Blocks and unblocks host level I/O based on the reason code
2708 *
2709 * Return: Nothing
2710 */
2711static void mpi3mr_preparereset_evt_th(struct mpi3mr_ioc *mrioc,
2712 struct mpi3_event_notification_reply *event_reply)
2713{
2714 struct mpi3_event_data_prepare_for_reset *evtdata =
2715 (struct mpi3_event_data_prepare_for_reset *)event_reply->event_data;
2716
2717 if (evtdata->reason_code == MPI3_EVENT_PREPARE_RESET_RC_START) {
2718 dprint_event_th(mrioc,
2719 "prepare for reset event top half with rc=start\n");
2720 if (mrioc->prepare_for_reset)
2721 return;
2722 mrioc->prepare_for_reset = 1;
2723 mrioc->prepare_for_reset_timeout_counter = 0;
2724 } else if (evtdata->reason_code == MPI3_EVENT_PREPARE_RESET_RC_ABORT) {
2725 dprint_event_th(mrioc,
2726 "prepare for reset top half with rc=abort\n");
2727 mrioc->prepare_for_reset = 0;
2728 mrioc->prepare_for_reset_timeout_counter = 0;
2729 }
2730 if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK)
2731 == MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED)
2732 mpi3mr_send_event_ack(mrioc, event_reply->event, NULL,
2733 le32_to_cpu(event_reply->event_context));
2734}
2735
2736/**
2737 * mpi3mr_energypackchg_evt_th - Energy pack change evt tophalf
2738 * @mrioc: Adapter instance reference
2739 * @event_reply: event data
2740 *
2741 * Identifies the new shutdown timeout value and update.
2742 *
2743 * Return: Nothing
2744 */
2745static void mpi3mr_energypackchg_evt_th(struct mpi3mr_ioc *mrioc,
2746 struct mpi3_event_notification_reply *event_reply)
2747{
2748 struct mpi3_event_data_energy_pack_change *evtdata =
2749 (struct mpi3_event_data_energy_pack_change *)event_reply->event_data;
2750 u16 shutdown_timeout = le16_to_cpu(evtdata->shutdown_timeout);
2751
2752 if (shutdown_timeout <= 0) {
2753 ioc_warn(mrioc,
2754 "%s :Invalid Shutdown Timeout received = %d\n",
2755 __func__, shutdown_timeout);
2756 return;
2757 }
2758
2759 ioc_info(mrioc,
2760 "%s :Previous Shutdown Timeout Value = %d New Shutdown Timeout Value = %d\n",
2761 __func__, mrioc->facts.shutdown_timeout, shutdown_timeout);
2762 mrioc->facts.shutdown_timeout = shutdown_timeout;
2763}
2764
2765/**
2766 * mpi3mr_cablemgmt_evt_th - Cable management event tophalf
2767 * @mrioc: Adapter instance reference
2768 * @event_reply: event data
2769 *
2770 * Displays Cable manegemt event details.
2771 *
2772 * Return: Nothing
2773 */
2774static void mpi3mr_cablemgmt_evt_th(struct mpi3mr_ioc *mrioc,
2775 struct mpi3_event_notification_reply *event_reply)
2776{
2777 struct mpi3_event_data_cable_management *evtdata =
2778 (struct mpi3_event_data_cable_management *)event_reply->event_data;
2779
2780 switch (evtdata->status) {
2781 case MPI3_EVENT_CABLE_MGMT_STATUS_INSUFFICIENT_POWER:
2782 {
2783 ioc_info(mrioc, "An active cable with receptacle_id %d cannot be powered.\n"
2784 "Devices connected to this cable are not detected.\n"
2785 "This cable requires %d mW of power.\n",
2786 evtdata->receptacle_id,
2787 le32_to_cpu(evtdata->active_cable_power_requirement));
2788 break;
2789 }
2790 case MPI3_EVENT_CABLE_MGMT_STATUS_DEGRADED:
2791 {
2792 ioc_info(mrioc, "A cable with receptacle_id %d is not running at optimal speed\n",
2793 evtdata->receptacle_id);
2794 break;
2795 }
2796 default:
2797 break;
2798 }
2799}
2800
2801/**
2802 * mpi3mr_add_event_wait_for_device_refresh - Add Wait for Device Refresh Event
2803 * @mrioc: Adapter instance reference
2804 *
2805 * Add driver specific event to make sure that the driver won't process the
2806 * events until all the devices are refreshed during soft reset.
2807 *
2808 * Return: Nothing
2809 */
2810void mpi3mr_add_event_wait_for_device_refresh(struct mpi3mr_ioc *mrioc)
2811{
2812 struct mpi3mr_fwevt *fwevt = NULL;
2813
2814 fwevt = mpi3mr_alloc_fwevt(0);
2815 if (!fwevt) {
2816 dprint_event_th(mrioc,
2817 "failed to schedule bottom half handler for event(0x%02x)\n",
2818 MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH);
2819 return;
2820 }
2821 fwevt->mrioc = mrioc;
2822 fwevt->event_id = MPI3_EVENT_WAIT_FOR_DEVICES_TO_REFRESH;
2823 fwevt->send_ack = 0;
2824 fwevt->process_evt = 1;
2825 fwevt->evt_ctx = 0;
2826 fwevt->event_data_size = 0;
2827 mpi3mr_fwevt_add_to_list(mrioc, fwevt);
2828}
2829
2830/**
2831 * mpi3mr_os_handle_events - Firmware event handler
2832 * @mrioc: Adapter instance reference
2833 * @event_reply: event data
2834 *
2835 * Identify whteher the event has to handled and acknowledged
2836 * and either process the event in the tophalf and/or schedule a
2837 * bottom half through mpi3mr_fwevt_worker.
2838 *
2839 * Return: Nothing
2840 */
2841void mpi3mr_os_handle_events(struct mpi3mr_ioc *mrioc,
2842 struct mpi3_event_notification_reply *event_reply)
2843{
2844 u16 evt_type, sz;
2845 struct mpi3mr_fwevt *fwevt = NULL;
2846 bool ack_req = 0, process_evt_bh = 0;
2847
2848 if (mrioc->stop_drv_processing)
2849 return;
2850
2851 if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK)
2852 == MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED)
2853 ack_req = 1;
2854
2855 evt_type = event_reply->event;
2856
2857 switch (evt_type) {
2858 case MPI3_EVENT_DEVICE_ADDED:
2859 {
2860 struct mpi3_device_page0 *dev_pg0 =
2861 (struct mpi3_device_page0 *)event_reply->event_data;
2862 if (mpi3mr_create_tgtdev(mrioc, dev_pg0))
2863 ioc_err(mrioc,
2864 "%s :Failed to add device in the device add event\n",
2865 __func__);
2866 else
2867 process_evt_bh = 1;
2868 break;
2869 }
2870 case MPI3_EVENT_DEVICE_STATUS_CHANGE:
2871 {
2872 process_evt_bh = 1;
2873 mpi3mr_devstatuschg_evt_th(mrioc, event_reply);
2874 break;
2875 }
2876 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
2877 {
2878 process_evt_bh = 1;
2879 mpi3mr_sastopochg_evt_th(mrioc, event_reply);
2880 break;
2881 }
2882 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST:
2883 {
2884 process_evt_bh = 1;
2885 mpi3mr_pcietopochg_evt_th(mrioc, event_reply);
2886 break;
2887 }
2888 case MPI3_EVENT_PREPARE_FOR_RESET:
2889 {
2890 mpi3mr_preparereset_evt_th(mrioc, event_reply);
2891 ack_req = 0;
2892 break;
2893 }
2894 case MPI3_EVENT_DEVICE_INFO_CHANGED:
2895 case MPI3_EVENT_LOG_DATA:
2896 case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE:
2897 case MPI3_EVENT_ENCL_DEVICE_ADDED:
2898 {
2899 process_evt_bh = 1;
2900 break;
2901 }
2902 case MPI3_EVENT_ENERGY_PACK_CHANGE:
2903 {
2904 mpi3mr_energypackchg_evt_th(mrioc, event_reply);
2905 break;
2906 }
2907 case MPI3_EVENT_CABLE_MGMT:
2908 {
2909 mpi3mr_cablemgmt_evt_th(mrioc, event_reply);
2910 break;
2911 }
2912 case MPI3_EVENT_SAS_DISCOVERY:
2913 case MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR:
2914 case MPI3_EVENT_SAS_BROADCAST_PRIMITIVE:
2915 case MPI3_EVENT_PCIE_ENUMERATION:
2916 break;
2917 default:
2918 ioc_info(mrioc, "%s :event 0x%02x is not handled\n",
2919 __func__, evt_type);
2920 break;
2921 }
2922 if (process_evt_bh || ack_req) {
2923 sz = event_reply->event_data_length * 4;
2924 fwevt = mpi3mr_alloc_fwevt(sz);
2925 if (!fwevt) {
2926 ioc_info(mrioc, "%s :failure at %s:%d/%s()!\n",
2927 __func__, __FILE__, __LINE__, __func__);
2928 return;
2929 }
2930
2931 memcpy(fwevt->event_data, event_reply->event_data, sz);
2932 fwevt->mrioc = mrioc;
2933 fwevt->event_id = evt_type;
2934 fwevt->send_ack = ack_req;
2935 fwevt->process_evt = process_evt_bh;
2936 fwevt->evt_ctx = le32_to_cpu(event_reply->event_context);
2937 mpi3mr_fwevt_add_to_list(mrioc, fwevt);
2938 }
2939}
2940
2941/**
2942 * mpi3mr_setup_eedp - Setup EEDP information in MPI3 SCSI IO
2943 * @mrioc: Adapter instance reference
2944 * @scmd: SCSI command reference
2945 * @scsiio_req: MPI3 SCSI IO request
2946 *
2947 * Identifies the protection information flags from the SCSI
2948 * command and set appropriate flags in the MPI3 SCSI IO
2949 * request.
2950 *
2951 * Return: Nothing
2952 */
2953static void mpi3mr_setup_eedp(struct mpi3mr_ioc *mrioc,
2954 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
2955{
2956 u16 eedp_flags = 0;
2957 unsigned char prot_op = scsi_get_prot_op(scmd);
2958
2959 switch (prot_op) {
2960 case SCSI_PROT_NORMAL:
2961 return;
2962 case SCSI_PROT_READ_STRIP:
2963 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE;
2964 break;
2965 case SCSI_PROT_WRITE_INSERT:
2966 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT;
2967 break;
2968 case SCSI_PROT_READ_INSERT:
2969 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT;
2970 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2971 break;
2972 case SCSI_PROT_WRITE_STRIP:
2973 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE;
2974 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2975 break;
2976 case SCSI_PROT_READ_PASS:
2977 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK;
2978 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2979 break;
2980 case SCSI_PROT_WRITE_PASS:
2981 if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM) {
2982 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REGEN;
2983 scsiio_req->sgl[0].eedp.application_tag_translation_mask =
2984 0xffff;
2985 } else
2986 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK;
2987
2988 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID;
2989 break;
2990 default:
2991 return;
2992 }
2993
2994 if (scmd->prot_flags & SCSI_PROT_GUARD_CHECK)
2995 eedp_flags |= MPI3_EEDPFLAGS_CHK_GUARD;
2996
2997 if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM)
2998 eedp_flags |= MPI3_EEDPFLAGS_HOST_GUARD_IP_CHKSUM;
2999
3000 if (scmd->prot_flags & SCSI_PROT_REF_CHECK) {
3001 eedp_flags |= MPI3_EEDPFLAGS_CHK_REF_TAG |
3002 MPI3_EEDPFLAGS_INCR_PRI_REF_TAG;
3003 scsiio_req->cdb.eedp32.primary_reference_tag =
3004 cpu_to_be32(scsi_prot_ref_tag(scmd));
3005 }
3006
3007 if (scmd->prot_flags & SCSI_PROT_REF_INCREMENT)
3008 eedp_flags |= MPI3_EEDPFLAGS_INCR_PRI_REF_TAG;
3009
3010 eedp_flags |= MPI3_EEDPFLAGS_ESC_MODE_APPTAG_DISABLE;
3011
3012 switch (scsi_prot_interval(scmd)) {
3013 case 512:
3014 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_512;
3015 break;
3016 case 520:
3017 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_520;
3018 break;
3019 case 4080:
3020 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4080;
3021 break;
3022 case 4088:
3023 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4088;
3024 break;
3025 case 4096:
3026 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4096;
3027 break;
3028 case 4104:
3029 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4104;
3030 break;
3031 case 4160:
3032 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4160;
3033 break;
3034 default:
3035 break;
3036 }
3037
3038 scsiio_req->sgl[0].eedp.eedp_flags = cpu_to_le16(eedp_flags);
3039 scsiio_req->sgl[0].eedp.flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED;
3040}
3041
3042/**
3043 * mpi3mr_build_sense_buffer - Map sense information
3044 * @desc: Sense type
3045 * @buf: Sense buffer to populate
3046 * @key: Sense key
3047 * @asc: Additional sense code
3048 * @ascq: Additional sense code qualifier
3049 *
3050 * Maps the given sense information into either descriptor or
3051 * fixed format sense data.
3052 *
3053 * Return: Nothing
3054 */
3055static inline void mpi3mr_build_sense_buffer(int desc, u8 *buf, u8 key,
3056 u8 asc, u8 ascq)
3057{
3058 if (desc) {
3059 buf[0] = 0x72; /* descriptor, current */
3060 buf[1] = key;
3061 buf[2] = asc;
3062 buf[3] = ascq;
3063 buf[7] = 0;
3064 } else {
3065 buf[0] = 0x70; /* fixed, current */
3066 buf[2] = key;
3067 buf[7] = 0xa;
3068 buf[12] = asc;
3069 buf[13] = ascq;
3070 }
3071}
3072
3073/**
3074 * mpi3mr_map_eedp_error - Map EEDP errors from IOC status
3075 * @scmd: SCSI command reference
3076 * @ioc_status: status of MPI3 request
3077 *
3078 * Maps the EEDP error status of the SCSI IO request to sense
3079 * data.
3080 *
3081 * Return: Nothing
3082 */
3083static void mpi3mr_map_eedp_error(struct scsi_cmnd *scmd,
3084 u16 ioc_status)
3085{
3086 u8 ascq = 0;
3087
3088 switch (ioc_status) {
3089 case MPI3_IOCSTATUS_EEDP_GUARD_ERROR:
3090 ascq = 0x01;
3091 break;
3092 case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR:
3093 ascq = 0x02;
3094 break;
3095 case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR:
3096 ascq = 0x03;
3097 break;
3098 default:
3099 ascq = 0x00;
3100 break;
3101 }
3102
3103 mpi3mr_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
3104 0x10, ascq);
3105 scmd->result = (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION;
3106}
3107
3108/**
3109 * mpi3mr_process_op_reply_desc - reply descriptor handler
3110 * @mrioc: Adapter instance reference
3111 * @reply_desc: Operational reply descriptor
3112 * @reply_dma: place holder for reply DMA address
3113 * @qidx: Operational queue index
3114 *
3115 * Process the operational reply descriptor and identifies the
3116 * descriptor type. Based on the descriptor map the MPI3 request
3117 * status to a SCSI command status and calls scsi_done call
3118 * back.
3119 *
3120 * Return: Nothing
3121 */
3122void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc,
3123 struct mpi3_default_reply_descriptor *reply_desc, u64 *reply_dma, u16 qidx)
3124{
3125 u16 reply_desc_type, host_tag = 0;
3126 u16 ioc_status = MPI3_IOCSTATUS_SUCCESS;
3127 u32 ioc_loginfo = 0;
3128 struct mpi3_status_reply_descriptor *status_desc = NULL;
3129 struct mpi3_address_reply_descriptor *addr_desc = NULL;
3130 struct mpi3_success_reply_descriptor *success_desc = NULL;
3131 struct mpi3_scsi_io_reply *scsi_reply = NULL;
3132 struct scsi_cmnd *scmd = NULL;
3133 struct scmd_priv *priv = NULL;
3134 u8 *sense_buf = NULL;
3135 u8 scsi_state = 0, scsi_status = 0, sense_state = 0;
3136 u32 xfer_count = 0, sense_count = 0, resp_data = 0;
3137 u16 dev_handle = 0xFFFF;
3138 struct scsi_sense_hdr sshdr;
3139 struct mpi3mr_stgt_priv_data *stgt_priv_data = NULL;
3140 struct mpi3mr_sdev_priv_data *sdev_priv_data = NULL;
3141 u32 ioc_pend_data_len = 0, tg_pend_data_len = 0, data_len_blks = 0;
3142 struct mpi3mr_throttle_group_info *tg = NULL;
3143 u8 throttle_enabled_dev = 0;
3144
3145 *reply_dma = 0;
3146 reply_desc_type = le16_to_cpu(reply_desc->reply_flags) &
3147 MPI3_REPLY_DESCRIPT_FLAGS_TYPE_MASK;
3148 switch (reply_desc_type) {
3149 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_STATUS:
3150 status_desc = (struct mpi3_status_reply_descriptor *)reply_desc;
3151 host_tag = le16_to_cpu(status_desc->host_tag);
3152 ioc_status = le16_to_cpu(status_desc->ioc_status);
3153 if (ioc_status &
3154 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
3155 ioc_loginfo = le32_to_cpu(status_desc->ioc_log_info);
3156 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
3157 break;
3158 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_ADDRESS_REPLY:
3159 addr_desc = (struct mpi3_address_reply_descriptor *)reply_desc;
3160 *reply_dma = le64_to_cpu(addr_desc->reply_frame_address);
3161 scsi_reply = mpi3mr_get_reply_virt_addr(mrioc,
3162 *reply_dma);
3163 if (!scsi_reply) {
3164 panic("%s: scsi_reply is NULL, this shouldn't happen\n",
3165 mrioc->name);
3166 goto out;
3167 }
3168 host_tag = le16_to_cpu(scsi_reply->host_tag);
3169 ioc_status = le16_to_cpu(scsi_reply->ioc_status);
3170 scsi_status = scsi_reply->scsi_status;
3171 scsi_state = scsi_reply->scsi_state;
3172 dev_handle = le16_to_cpu(scsi_reply->dev_handle);
3173 sense_state = (scsi_state & MPI3_SCSI_STATE_SENSE_MASK);
3174 xfer_count = le32_to_cpu(scsi_reply->transfer_count);
3175 sense_count = le32_to_cpu(scsi_reply->sense_count);
3176 resp_data = le32_to_cpu(scsi_reply->response_data);
3177 sense_buf = mpi3mr_get_sensebuf_virt_addr(mrioc,
3178 le64_to_cpu(scsi_reply->sense_data_buffer_address));
3179 if (ioc_status &
3180 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL)
3181 ioc_loginfo = le32_to_cpu(scsi_reply->ioc_log_info);
3182 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK;
3183 if (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY)
3184 panic("%s: Ran out of sense buffers\n", mrioc->name);
3185 break;
3186 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_SUCCESS:
3187 success_desc = (struct mpi3_success_reply_descriptor *)reply_desc;
3188 host_tag = le16_to_cpu(success_desc->host_tag);
3189 break;
3190 default:
3191 break;
3192 }
3193 scmd = mpi3mr_scmd_from_host_tag(mrioc, host_tag, qidx);
3194 if (!scmd) {
3195 panic("%s: Cannot Identify scmd for host_tag 0x%x\n",
3196 mrioc->name, host_tag);
3197 goto out;
3198 }
3199 priv = scsi_cmd_priv(scmd);
3200
3201 data_len_blks = scsi_bufflen(scmd) >> 9;
3202 sdev_priv_data = scmd->device->hostdata;
3203 if (sdev_priv_data) {
3204 stgt_priv_data = sdev_priv_data->tgt_priv_data;
3205 if (stgt_priv_data) {
3206 tg = stgt_priv_data->throttle_group;
3207 throttle_enabled_dev =
3208 stgt_priv_data->io_throttle_enabled;
3209 dev_handle = stgt_priv_data->dev_handle;
3210 }
3211 }
3212 if (unlikely((data_len_blks >= mrioc->io_throttle_data_length) &&
3213 throttle_enabled_dev)) {
3214 ioc_pend_data_len = atomic_sub_return(data_len_blks,
3215 &mrioc->pend_large_data_sz);
3216 if (tg) {
3217 tg_pend_data_len = atomic_sub_return(data_len_blks,
3218 &tg->pend_large_data_sz);
3219 if (tg->io_divert && ((ioc_pend_data_len <=
3220 mrioc->io_throttle_low) &&
3221 (tg_pend_data_len <= tg->low))) {
3222 tg->io_divert = 0;
3223 mpi3mr_set_io_divert_for_all_vd_in_tg(
3224 mrioc, tg, 0);
3225 }
3226 } else {
3227 if (ioc_pend_data_len <= mrioc->io_throttle_low)
3228 stgt_priv_data->io_divert = 0;
3229 }
3230 } else if (unlikely((stgt_priv_data && stgt_priv_data->io_divert))) {
3231 ioc_pend_data_len = atomic_read(&mrioc->pend_large_data_sz);
3232 if (!tg) {
3233 if (ioc_pend_data_len <= mrioc->io_throttle_low)
3234 stgt_priv_data->io_divert = 0;
3235
3236 } else if (ioc_pend_data_len <= mrioc->io_throttle_low) {
3237 tg_pend_data_len = atomic_read(&tg->pend_large_data_sz);
3238 if (tg->io_divert && (tg_pend_data_len <= tg->low)) {
3239 tg->io_divert = 0;
3240 mpi3mr_set_io_divert_for_all_vd_in_tg(
3241 mrioc, tg, 0);
3242 }
3243 }
3244 }
3245
3246 if (success_desc) {
3247 scmd->result = DID_OK << 16;
3248 goto out_success;
3249 }
3250
3251 scsi_set_resid(scmd, scsi_bufflen(scmd) - xfer_count);
3252 if (ioc_status == MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN &&
3253 xfer_count == 0 && (scsi_status == MPI3_SCSI_STATUS_BUSY ||
3254 scsi_status == MPI3_SCSI_STATUS_RESERVATION_CONFLICT ||
3255 scsi_status == MPI3_SCSI_STATUS_TASK_SET_FULL))
3256 ioc_status = MPI3_IOCSTATUS_SUCCESS;
3257
3258 if ((sense_state == MPI3_SCSI_STATE_SENSE_VALID) && sense_count &&
3259 sense_buf) {
3260 u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE, sense_count);
3261
3262 memcpy(scmd->sense_buffer, sense_buf, sz);
3263 }
3264
3265 switch (ioc_status) {
3266 case MPI3_IOCSTATUS_BUSY:
3267 case MPI3_IOCSTATUS_INSUFFICIENT_RESOURCES:
3268 scmd->result = SAM_STAT_BUSY;
3269 break;
3270 case MPI3_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
3271 scmd->result = DID_NO_CONNECT << 16;
3272 break;
3273 case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED:
3274 scmd->result = DID_SOFT_ERROR << 16;
3275 break;
3276 case MPI3_IOCSTATUS_SCSI_TASK_TERMINATED:
3277 case MPI3_IOCSTATUS_SCSI_EXT_TERMINATED:
3278 scmd->result = DID_RESET << 16;
3279 break;
3280 case MPI3_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
3281 if ((xfer_count == 0) || (scmd->underflow > xfer_count))
3282 scmd->result = DID_SOFT_ERROR << 16;
3283 else
3284 scmd->result = (DID_OK << 16) | scsi_status;
3285 break;
3286 case MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN:
3287 scmd->result = (DID_OK << 16) | scsi_status;
3288 if (sense_state == MPI3_SCSI_STATE_SENSE_VALID)
3289 break;
3290 if (xfer_count < scmd->underflow) {
3291 if (scsi_status == SAM_STAT_BUSY)
3292 scmd->result = SAM_STAT_BUSY;
3293 else
3294 scmd->result = DID_SOFT_ERROR << 16;
3295 } else if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
3296 (sense_state != MPI3_SCSI_STATE_SENSE_NOT_AVAILABLE))
3297 scmd->result = DID_SOFT_ERROR << 16;
3298 else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
3299 scmd->result = DID_RESET << 16;
3300 break;
3301 case MPI3_IOCSTATUS_SCSI_DATA_OVERRUN:
3302 scsi_set_resid(scmd, 0);
3303 fallthrough;
3304 case MPI3_IOCSTATUS_SCSI_RECOVERED_ERROR:
3305 case MPI3_IOCSTATUS_SUCCESS:
3306 scmd->result = (DID_OK << 16) | scsi_status;
3307 if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) ||
3308 (sense_state == MPI3_SCSI_STATE_SENSE_FAILED) ||
3309 (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY))
3310 scmd->result = DID_SOFT_ERROR << 16;
3311 else if (scsi_state & MPI3_SCSI_STATE_TERMINATED)
3312 scmd->result = DID_RESET << 16;
3313 break;
3314 case MPI3_IOCSTATUS_EEDP_GUARD_ERROR:
3315 case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR:
3316 case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR:
3317 mpi3mr_map_eedp_error(scmd, ioc_status);
3318 break;
3319 case MPI3_IOCSTATUS_SCSI_PROTOCOL_ERROR:
3320 case MPI3_IOCSTATUS_INVALID_FUNCTION:
3321 case MPI3_IOCSTATUS_INVALID_SGL:
3322 case MPI3_IOCSTATUS_INTERNAL_ERROR:
3323 case MPI3_IOCSTATUS_INVALID_FIELD:
3324 case MPI3_IOCSTATUS_INVALID_STATE:
3325 case MPI3_IOCSTATUS_SCSI_IO_DATA_ERROR:
3326 case MPI3_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
3327 case MPI3_IOCSTATUS_INSUFFICIENT_POWER:
3328 default:
3329 scmd->result = DID_SOFT_ERROR << 16;
3330 break;
3331 }
3332
3333 if (scmd->result != (DID_OK << 16) && (scmd->cmnd[0] != ATA_12) &&
3334 (scmd->cmnd[0] != ATA_16) &&
3335 mrioc->logging_level & MPI3_DEBUG_SCSI_ERROR) {
3336 ioc_info(mrioc, "%s :scmd->result 0x%x\n", __func__,
3337 scmd->result);
3338 scsi_print_command(scmd);
3339 ioc_info(mrioc,
3340 "%s :Command issued to handle 0x%02x returned with error 0x%04x loginfo 0x%08x, qid %d\n",
3341 __func__, dev_handle, ioc_status, ioc_loginfo,
3342 priv->req_q_idx + 1);
3343 ioc_info(mrioc,
3344 " host_tag %d scsi_state 0x%02x scsi_status 0x%02x, xfer_cnt %d resp_data 0x%x\n",
3345 host_tag, scsi_state, scsi_status, xfer_count, resp_data);
3346 if (sense_buf) {
3347 scsi_normalize_sense(sense_buf, sense_count, &sshdr);
3348 ioc_info(mrioc,
3349 "%s :sense_count 0x%x, sense_key 0x%x ASC 0x%x, ASCQ 0x%x\n",
3350 __func__, sense_count, sshdr.sense_key,
3351 sshdr.asc, sshdr.ascq);
3352 }
3353 }
3354out_success:
3355 if (priv->meta_sg_valid) {
3356 dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd),
3357 scsi_prot_sg_count(scmd), scmd->sc_data_direction);
3358 }
3359 mpi3mr_clear_scmd_priv(mrioc, scmd);
3360 scsi_dma_unmap(scmd);
3361 scsi_done(scmd);
3362out:
3363 if (sense_buf)
3364 mpi3mr_repost_sense_buf(mrioc,
3365 le64_to_cpu(scsi_reply->sense_data_buffer_address));
3366}
3367
3368/**
3369 * mpi3mr_get_chain_idx - get free chain buffer index
3370 * @mrioc: Adapter instance reference
3371 *
3372 * Try to get a free chain buffer index from the free pool.
3373 *
3374 * Return: -1 on failure or the free chain buffer index
3375 */
3376static int mpi3mr_get_chain_idx(struct mpi3mr_ioc *mrioc)
3377{
3378 u8 retry_count = 5;
3379 int cmd_idx = -1;
3380 unsigned long flags;
3381
3382 spin_lock_irqsave(&mrioc->chain_buf_lock, flags);
3383 do {
3384 cmd_idx = find_first_zero_bit(mrioc->chain_bitmap,
3385 mrioc->chain_buf_count);
3386 if (cmd_idx < mrioc->chain_buf_count) {
3387 set_bit(cmd_idx, mrioc->chain_bitmap);
3388 break;
3389 }
3390 cmd_idx = -1;
3391 } while (retry_count--);
3392 spin_unlock_irqrestore(&mrioc->chain_buf_lock, flags);
3393 return cmd_idx;
3394}
3395
3396/**
3397 * mpi3mr_prepare_sg_scmd - build scatter gather list
3398 * @mrioc: Adapter instance reference
3399 * @scmd: SCSI command reference
3400 * @scsiio_req: MPI3 SCSI IO request
3401 *
3402 * This function maps SCSI command's data and protection SGEs to
3403 * MPI request SGEs. If required additional 4K chain buffer is
3404 * used to send the SGEs.
3405 *
3406 * Return: 0 on success, -ENOMEM on dma_map_sg failure
3407 */
3408static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc,
3409 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
3410{
3411 dma_addr_t chain_dma;
3412 struct scatterlist *sg_scmd;
3413 void *sg_local, *chain;
3414 u32 chain_length;
3415 int sges_left, chain_idx;
3416 u32 sges_in_segment;
3417 u8 simple_sgl_flags;
3418 u8 simple_sgl_flags_last;
3419 u8 last_chain_sgl_flags;
3420 struct chain_element *chain_req;
3421 struct scmd_priv *priv = NULL;
3422 u32 meta_sg = le32_to_cpu(scsiio_req->flags) &
3423 MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI;
3424
3425 priv = scsi_cmd_priv(scmd);
3426
3427 simple_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE |
3428 MPI3_SGE_FLAGS_DLAS_SYSTEM;
3429 simple_sgl_flags_last = simple_sgl_flags |
3430 MPI3_SGE_FLAGS_END_OF_LIST;
3431 last_chain_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_LAST_CHAIN |
3432 MPI3_SGE_FLAGS_DLAS_SYSTEM;
3433
3434 if (meta_sg)
3435 sg_local = &scsiio_req->sgl[MPI3_SCSIIO_METASGL_INDEX];
3436 else
3437 sg_local = &scsiio_req->sgl;
3438
3439 if (!scsiio_req->data_length && !meta_sg) {
3440 mpi3mr_build_zero_len_sge(sg_local);
3441 return 0;
3442 }
3443
3444 if (meta_sg) {
3445 sg_scmd = scsi_prot_sglist(scmd);
3446 sges_left = dma_map_sg(&mrioc->pdev->dev,
3447 scsi_prot_sglist(scmd),
3448 scsi_prot_sg_count(scmd),
3449 scmd->sc_data_direction);
3450 priv->meta_sg_valid = 1; /* To unmap meta sg DMA */
3451 } else {
3452 sg_scmd = scsi_sglist(scmd);
3453 sges_left = scsi_dma_map(scmd);
3454 }
3455
3456 if (sges_left < 0) {
3457 sdev_printk(KERN_ERR, scmd->device,
3458 "scsi_dma_map failed: request for %d bytes!\n",
3459 scsi_bufflen(scmd));
3460 return -ENOMEM;
3461 }
3462 if (sges_left > mrioc->max_sgl_entries) {
3463 sdev_printk(KERN_ERR, scmd->device,
3464 "scsi_dma_map returned unsupported sge count %d!\n",
3465 sges_left);
3466 return -ENOMEM;
3467 }
3468
3469 sges_in_segment = (mrioc->facts.op_req_sz -
3470 offsetof(struct mpi3_scsi_io_request, sgl)) / sizeof(struct mpi3_sge_common);
3471
3472 if (scsiio_req->sgl[0].eedp.flags ==
3473 MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED && !meta_sg) {
3474 sg_local += sizeof(struct mpi3_sge_common);
3475 sges_in_segment--;
3476 /* Reserve 1st segment (scsiio_req->sgl[0]) for eedp */
3477 }
3478
3479 if (scsiio_req->msg_flags ==
3480 MPI3_SCSIIO_MSGFLAGS_METASGL_VALID && !meta_sg) {
3481 sges_in_segment--;
3482 /* Reserve last segment (scsiio_req->sgl[3]) for meta sg */
3483 }
3484
3485 if (meta_sg)
3486 sges_in_segment = 1;
3487
3488 if (sges_left <= sges_in_segment)
3489 goto fill_in_last_segment;
3490
3491 /* fill in main message segment when there is a chain following */
3492 while (sges_in_segment > 1) {
3493 mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
3494 sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
3495 sg_scmd = sg_next(sg_scmd);
3496 sg_local += sizeof(struct mpi3_sge_common);
3497 sges_left--;
3498 sges_in_segment--;
3499 }
3500
3501 chain_idx = mpi3mr_get_chain_idx(mrioc);
3502 if (chain_idx < 0)
3503 return -1;
3504 chain_req = &mrioc->chain_sgl_list[chain_idx];
3505 if (meta_sg)
3506 priv->meta_chain_idx = chain_idx;
3507 else
3508 priv->chain_idx = chain_idx;
3509
3510 chain = chain_req->addr;
3511 chain_dma = chain_req->dma_addr;
3512 sges_in_segment = sges_left;
3513 chain_length = sges_in_segment * sizeof(struct mpi3_sge_common);
3514
3515 mpi3mr_add_sg_single(sg_local, last_chain_sgl_flags,
3516 chain_length, chain_dma);
3517
3518 sg_local = chain;
3519
3520fill_in_last_segment:
3521 while (sges_left > 0) {
3522 if (sges_left == 1)
3523 mpi3mr_add_sg_single(sg_local,
3524 simple_sgl_flags_last, sg_dma_len(sg_scmd),
3525 sg_dma_address(sg_scmd));
3526 else
3527 mpi3mr_add_sg_single(sg_local, simple_sgl_flags,
3528 sg_dma_len(sg_scmd), sg_dma_address(sg_scmd));
3529 sg_scmd = sg_next(sg_scmd);
3530 sg_local += sizeof(struct mpi3_sge_common);
3531 sges_left--;
3532 }
3533
3534 return 0;
3535}
3536
3537/**
3538 * mpi3mr_build_sg_scmd - build scatter gather list for SCSI IO
3539 * @mrioc: Adapter instance reference
3540 * @scmd: SCSI command reference
3541 * @scsiio_req: MPI3 SCSI IO request
3542 *
3543 * This function calls mpi3mr_prepare_sg_scmd for constructing
3544 * both data SGEs and protection information SGEs in the MPI
3545 * format from the SCSI Command as appropriate .
3546 *
3547 * Return: return value of mpi3mr_prepare_sg_scmd.
3548 */
3549static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc,
3550 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req)
3551{
3552 int ret;
3553
3554 ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
3555 if (ret)
3556 return ret;
3557
3558 if (scsiio_req->msg_flags == MPI3_SCSIIO_MSGFLAGS_METASGL_VALID) {
3559 /* There is a valid meta sg */
3560 scsiio_req->flags |=
3561 cpu_to_le32(MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI);
3562 ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req);
3563 }
3564
3565 return ret;
3566}
3567
3568/**
3569 * mpi3mr_tm_response_name - get TM response as a string
3570 * @resp_code: TM response code
3571 *
3572 * Convert known task management response code as a readable
3573 * string.
3574 *
3575 * Return: response code string.
3576 */
3577static const char *mpi3mr_tm_response_name(u8 resp_code)
3578{
3579 char *desc;
3580
3581 switch (resp_code) {
3582 case MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE:
3583 desc = "task management request completed";
3584 break;
3585 case MPI3_SCSITASKMGMT_RSPCODE_INVALID_FRAME:
3586 desc = "invalid frame";
3587 break;
3588 case MPI3_SCSITASKMGMT_RSPCODE_TM_FUNCTION_NOT_SUPPORTED:
3589 desc = "task management request not supported";
3590 break;
3591 case MPI3_SCSITASKMGMT_RSPCODE_TM_FAILED:
3592 desc = "task management request failed";
3593 break;
3594 case MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED:
3595 desc = "task management request succeeded";
3596 break;
3597 case MPI3_SCSITASKMGMT_RSPCODE_TM_INVALID_LUN:
3598 desc = "invalid LUN";
3599 break;
3600 case MPI3_SCSITASKMGMT_RSPCODE_TM_OVERLAPPED_TAG:
3601 desc = "overlapped tag attempted";
3602 break;
3603 case MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC:
3604 desc = "task queued, however not sent to target";
3605 break;
3606 case MPI3_SCSITASKMGMT_RSPCODE_TM_NVME_DENIED:
3607 desc = "task management request denied by NVMe device";
3608 break;
3609 default:
3610 desc = "unknown";
3611 break;
3612 }
3613
3614 return desc;
3615}
3616
3617inline void mpi3mr_poll_pend_io_completions(struct mpi3mr_ioc *mrioc)
3618{
3619 int i;
3620 int num_of_reply_queues =
3621 mrioc->num_op_reply_q + mrioc->op_reply_q_offset;
3622
3623 for (i = mrioc->op_reply_q_offset; i < num_of_reply_queues; i++)
3624 mpi3mr_process_op_reply_q(mrioc,
3625 mrioc->intr_info[i].op_reply_q);
3626}
3627
3628/**
3629 * mpi3mr_issue_tm - Issue Task Management request
3630 * @mrioc: Adapter instance reference
3631 * @tm_type: Task Management type
3632 * @handle: Device handle
3633 * @lun: lun ID
3634 * @htag: Host tag of the TM request
3635 * @timeout: TM timeout value
3636 * @drv_cmd: Internal command tracker
3637 * @resp_code: Response code place holder
3638 * @scmd: SCSI command
3639 *
3640 * Issues a Task Management Request to the controller for a
3641 * specified target, lun and command and wait for its completion
3642 * and check TM response. Recover the TM if it timed out by
3643 * issuing controller reset.
3644 *
3645 * Return: 0 on success, non-zero on errors
3646 */
3647int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type,
3648 u16 handle, uint lun, u16 htag, ulong timeout,
3649 struct mpi3mr_drv_cmd *drv_cmd,
3650 u8 *resp_code, struct scsi_cmnd *scmd)
3651{
3652 struct mpi3_scsi_task_mgmt_request tm_req;
3653 struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL;
3654 int retval = 0;
3655 struct mpi3mr_tgt_dev *tgtdev = NULL;
3656 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL;
3657 struct scmd_priv *cmd_priv = NULL;
3658 struct scsi_device *sdev = NULL;
3659 struct mpi3mr_sdev_priv_data *sdev_priv_data = NULL;
3660
3661 ioc_info(mrioc, "%s :Issue TM: TM type (0x%x) for devhandle 0x%04x\n",
3662 __func__, tm_type, handle);
3663 if (mrioc->unrecoverable) {
3664 retval = -1;
3665 ioc_err(mrioc, "%s :Issue TM: Unrecoverable controller\n",
3666 __func__);
3667 goto out;
3668 }
3669
3670 memset(&tm_req, 0, sizeof(tm_req));
3671 mutex_lock(&drv_cmd->mutex);
3672 if (drv_cmd->state & MPI3MR_CMD_PENDING) {
3673 retval = -1;
3674 ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__);
3675 mutex_unlock(&drv_cmd->mutex);
3676 goto out;
3677 }
3678 if (mrioc->reset_in_progress) {
3679 retval = -1;
3680 ioc_err(mrioc, "%s :Issue TM: Reset in progress\n", __func__);
3681 mutex_unlock(&drv_cmd->mutex);
3682 goto out;
3683 }
3684
3685 drv_cmd->state = MPI3MR_CMD_PENDING;
3686 drv_cmd->is_waiting = 1;
3687 drv_cmd->callback = NULL;
3688 tm_req.dev_handle = cpu_to_le16(handle);
3689 tm_req.task_type = tm_type;
3690 tm_req.host_tag = cpu_to_le16(htag);
3691
3692 int_to_scsilun(lun, (struct scsi_lun *)tm_req.lun);
3693 tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT;
3694
3695 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle);
3696
3697 if (scmd) {
3698 sdev = scmd->device;
3699 sdev_priv_data = sdev->hostdata;
3700 scsi_tgt_priv_data = ((sdev_priv_data) ?
3701 sdev_priv_data->tgt_priv_data : NULL);
3702 } else {
3703 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata)
3704 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *)
3705 tgtdev->starget->hostdata;
3706 }
3707
3708 if (scsi_tgt_priv_data)
3709 atomic_inc(&scsi_tgt_priv_data->block_io);
3710
3711 if (tgtdev && (tgtdev->dev_type == MPI3_DEVICE_DEVFORM_PCIE)) {
3712 if (cmd_priv && tgtdev->dev_spec.pcie_inf.abort_to)
3713 timeout = tgtdev->dev_spec.pcie_inf.abort_to;
3714 else if (!cmd_priv && tgtdev->dev_spec.pcie_inf.reset_to)
3715 timeout = tgtdev->dev_spec.pcie_inf.reset_to;
3716 }
3717
3718 init_completion(&drv_cmd->done);
3719 retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1);
3720 if (retval) {
3721 ioc_err(mrioc, "%s :Issue TM: Admin Post failed\n", __func__);
3722 goto out_unlock;
3723 }
3724 wait_for_completion_timeout(&drv_cmd->done, (timeout * HZ));
3725
3726 if (!(drv_cmd->state & MPI3MR_CMD_COMPLETE)) {
3727 drv_cmd->is_waiting = 0;
3728 retval = -1;
3729 if (!(drv_cmd->state & MPI3MR_CMD_RESET)) {
3730 dprint_tm(mrioc,
3731 "task management request timed out after %ld seconds\n",
3732 timeout);
3733 if (mrioc->logging_level & MPI3_DEBUG_TM)
3734 dprint_dump_req(&tm_req, sizeof(tm_req)/4);
3735 mpi3mr_soft_reset_handler(mrioc,
3736 MPI3MR_RESET_FROM_TM_TIMEOUT, 1);
3737 }
3738 goto out_unlock;
3739 }
3740
3741 if (!(drv_cmd->state & MPI3MR_CMD_REPLY_VALID)) {
3742 dprint_tm(mrioc, "invalid task management reply message\n");
3743 retval = -1;
3744 goto out_unlock;
3745 }
3746
3747 tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply;
3748
3749 switch (drv_cmd->ioc_status) {
3750 case MPI3_IOCSTATUS_SUCCESS:
3751 *resp_code = le32_to_cpu(tm_reply->response_data) &
3752 MPI3MR_RI_MASK_RESPCODE;
3753 break;
3754 case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED:
3755 *resp_code = MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE;
3756 break;
3757 default:
3758 dprint_tm(mrioc,
3759 "task management request to handle(0x%04x) is failed with ioc_status(0x%04x) log_info(0x%08x)\n",
3760 handle, drv_cmd->ioc_status, drv_cmd->ioc_loginfo);
3761 retval = -1;
3762 goto out_unlock;
3763 }
3764
3765 switch (*resp_code) {
3766 case MPI3_SCSITASKMGMT_RSPCODE_TM_SUCCEEDED:
3767 case MPI3_SCSITASKMGMT_RSPCODE_TM_COMPLETE:
3768 break;
3769 case MPI3_SCSITASKMGMT_RSPCODE_IO_QUEUED_ON_IOC:
3770 if (tm_type != MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK)
3771 retval = -1;
3772 break;
3773 default:
3774 retval = -1;
3775 break;
3776 }
3777
3778 dprint_tm(mrioc,
3779 "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",
3780 tm_type, handle, drv_cmd->ioc_status, drv_cmd->ioc_loginfo,
3781 le32_to_cpu(tm_reply->termination_count),
3782 mpi3mr_tm_response_name(*resp_code), *resp_code);
3783
3784 if (!retval) {
3785 mpi3mr_ioc_disable_intr(mrioc);
3786 mpi3mr_poll_pend_io_completions(mrioc);
3787 mpi3mr_ioc_enable_intr(mrioc);
3788 mpi3mr_poll_pend_io_completions(mrioc);
3789 mpi3mr_process_admin_reply_q(mrioc);
3790 }
3791 switch (tm_type) {
3792 case MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
3793 if (!scsi_tgt_priv_data)
3794 break;
3795 scsi_tgt_priv_data->pend_count = 0;
3796 blk_mq_tagset_busy_iter(&mrioc->shost->tag_set,
3797 mpi3mr_count_tgt_pending,
3798 (void *)scsi_tgt_priv_data->starget);
3799 break;
3800 case MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET:
3801 if (!sdev_priv_data)
3802 break;
3803 sdev_priv_data->pend_count = 0;
3804 blk_mq_tagset_busy_iter(&mrioc->shost->tag_set,
3805 mpi3mr_count_dev_pending, (void *)sdev);
3806 break;
3807 default:
3808 break;
3809 }
3810
3811out_unlock:
3812 drv_cmd->state = MPI3MR_CMD_NOTUSED;
3813 mutex_unlock(&drv_cmd->mutex);
3814 if (scsi_tgt_priv_data)
3815 atomic_dec_if_positive(&scsi_tgt_priv_data->block_io);
3816 if (tgtdev)
3817 mpi3mr_tgtdev_put(tgtdev);
3818out:
3819 return retval;
3820}
3821
3822/**
3823 * mpi3mr_bios_param - BIOS param callback
3824 * @sdev: SCSI device reference
3825 * @bdev: Block device reference
3826 * @capacity: Capacity in logical sectors
3827 * @params: Parameter array
3828 *
3829 * Just the parameters with heads/secots/cylinders.
3830 *
3831 * Return: 0 always
3832 */
3833static int mpi3mr_bios_param(struct scsi_device *sdev,
3834 struct block_device *bdev, sector_t capacity, int params[])
3835{
3836 int heads;
3837 int sectors;
3838 sector_t cylinders;
3839 ulong dummy;
3840
3841 heads = 64;
3842 sectors = 32;
3843
3844 dummy = heads * sectors;
3845 cylinders = capacity;
3846 sector_div(cylinders, dummy);
3847
3848 if ((ulong)capacity >= 0x200000) {
3849 heads = 255;
3850 sectors = 63;
3851 dummy = heads * sectors;
3852 cylinders = capacity;
3853 sector_div(cylinders, dummy);
3854 }
3855
3856 params[0] = heads;
3857 params[1] = sectors;
3858 params[2] = cylinders;
3859 return 0;
3860}
3861
3862/**
3863 * mpi3mr_map_queues - Map queues callback handler
3864 * @shost: SCSI host reference
3865 *
3866 * Maps default and poll queues.
3867 *
3868 * Return: return zero.
3869 */
3870static void mpi3mr_map_queues(struct Scsi_Host *shost)
3871{
3872 struct mpi3mr_ioc *mrioc = shost_priv(shost);
3873 int i, qoff, offset;
3874 struct blk_mq_queue_map *map = NULL;
3875
3876 offset = mrioc->op_reply_q_offset;
3877
3878 for (i = 0, qoff = 0; i < HCTX_MAX_TYPES; i++) {
3879 map = &shost->tag_set.map[i];
3880
3881 map->nr_queues = 0;
3882
3883 if (i == HCTX_TYPE_DEFAULT)
3884 map->nr_queues = mrioc->default_qcount;
3885 else if (i == HCTX_TYPE_POLL)
3886 map->nr_queues = mrioc->active_poll_qcount;
3887
3888 if (!map->nr_queues) {
3889 BUG_ON(i == HCTX_TYPE_DEFAULT);
3890 continue;
3891 }
3892
3893 /*
3894 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3895 * affinity), so use the regular blk-mq cpu mapping
3896 */
3897 map->queue_offset = qoff;
3898 if (i != HCTX_TYPE_POLL)
3899 blk_mq_pci_map_queues(map, mrioc->pdev, offset);
3900 else
3901 blk_mq_map_queues(map);
3902
3903 qoff += map->nr_queues;
3904 offset += map->nr_queues;
3905 }
3906}
3907
3908/**
3909 * mpi3mr_get_fw_pending_ios - Calculate pending I/O count
3910 * @mrioc: Adapter instance reference
3911 *
3912 * Calculate the pending I/Os for the controller and return.
3913 *
3914 * Return: Number of pending I/Os
3915 */
3916static inline int mpi3mr_get_fw_pending_ios(struct mpi3mr_ioc *mrioc)
3917{
3918 u16 i;
3919 uint pend_ios = 0;
3920
3921 for (i = 0; i < mrioc->num_op_reply_q; i++)
3922 pend_ios += atomic_read(&mrioc->op_reply_qinfo[i].pend_ios);
3923 return pend_ios;
3924}
3925
3926/**
3927 * mpi3mr_print_pending_host_io - print pending I/Os
3928 * @mrioc: Adapter instance reference
3929 *
3930 * Print number of pending I/Os and each I/O details prior to
3931 * reset for debug purpose.
3932 *
3933 * Return: Nothing
3934 */
3935static void mpi3mr_print_pending_host_io(struct mpi3mr_ioc *mrioc)
3936{
3937 struct Scsi_Host *shost = mrioc->shost;
3938
3939 ioc_info(mrioc, "%s :Pending commands prior to reset: %d\n",
3940 __func__, mpi3mr_get_fw_pending_ios(mrioc));
3941 blk_mq_tagset_busy_iter(&shost->tag_set,
3942 mpi3mr_print_scmd, (void *)mrioc);
3943}
3944
3945/**
3946 * mpi3mr_wait_for_host_io - block for I/Os to complete
3947 * @mrioc: Adapter instance reference
3948 * @timeout: time out in seconds
3949 * Waits for pending I/Os for the given adapter to complete or
3950 * to hit the timeout.
3951 *
3952 * Return: Nothing
3953 */
3954void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout)
3955{
3956 enum mpi3mr_iocstate iocstate;
3957 int i = 0;
3958
3959 iocstate = mpi3mr_get_iocstate(mrioc);
3960 if (iocstate != MRIOC_STATE_READY)
3961 return;
3962
3963 if (!mpi3mr_get_fw_pending_ios(mrioc))
3964 return;
3965 ioc_info(mrioc,
3966 "%s :Waiting for %d seconds prior to reset for %d I/O\n",
3967 __func__, timeout, mpi3mr_get_fw_pending_ios(mrioc));
3968
3969 for (i = 0; i < timeout; i++) {
3970 if (!mpi3mr_get_fw_pending_ios(mrioc))
3971 break;
3972 iocstate = mpi3mr_get_iocstate(mrioc);
3973 if (iocstate != MRIOC_STATE_READY)
3974 break;
3975 msleep(1000);
3976 }
3977
3978 ioc_info(mrioc, "%s :Pending I/Os after wait is: %d\n", __func__,
3979 mpi3mr_get_fw_pending_ios(mrioc));
3980}
3981
3982/**
3983 * mpi3mr_setup_divert_ws - Setup Divert IO flag for write same
3984 * @mrioc: Adapter instance reference
3985 * @scmd: SCSI command reference
3986 * @scsiio_req: MPI3 SCSI IO request
3987 * @scsiio_flags: Pointer to MPI3 SCSI IO Flags
3988 * @wslen: write same max length
3989 *
3990 * Gets values of unmap, ndob and number of blocks from write
3991 * same scsi io and based on these values it sets divert IO flag
3992 * and reason for diverting IO to firmware.
3993 *
3994 * Return: Nothing
3995 */
3996static inline void mpi3mr_setup_divert_ws(struct mpi3mr_ioc *mrioc,
3997 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req,
3998 u32 *scsiio_flags, u16 wslen)
3999{
4000 u8 unmap = 0, ndob = 0;
4001 u8 opcode = scmd->cmnd[0];
4002 u32 num_blocks = 0;
4003 u16 sa = (scmd->cmnd[8] << 8) | (scmd->cmnd[9]);
4004
4005 if (opcode == WRITE_SAME_16) {
4006 unmap = scmd->cmnd[1] & 0x08;
4007 ndob = scmd->cmnd[1] & 0x01;
4008 num_blocks = get_unaligned_be32(scmd->cmnd + 10);
4009 } else if ((opcode == VARIABLE_LENGTH_CMD) && (sa == WRITE_SAME_32)) {
4010 unmap = scmd->cmnd[10] & 0x08;
4011 ndob = scmd->cmnd[10] & 0x01;
4012 num_blocks = get_unaligned_be32(scmd->cmnd + 28);
4013 } else
4014 return;
4015
4016 if ((unmap) && (ndob) && (num_blocks > wslen)) {
4017 scsiio_req->msg_flags |=
4018 MPI3_SCSIIO_MSGFLAGS_DIVERT_TO_FIRMWARE;
4019 *scsiio_flags |=
4020 MPI3_SCSIIO_FLAGS_DIVERT_REASON_WRITE_SAME_TOO_LARGE;
4021 }
4022}
4023
4024/**
4025 * mpi3mr_eh_host_reset - Host reset error handling callback
4026 * @scmd: SCSI command reference
4027 *
4028 * Issue controller reset
4029 *
4030 * Return: SUCCESS of successful reset else FAILED
4031 */
4032static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd)
4033{
4034 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
4035 int retval = FAILED, ret;
4036
4037 ret = mpi3mr_soft_reset_handler(mrioc,
4038 MPI3MR_RESET_FROM_EH_HOS, 1);
4039 if (ret)
4040 goto out;
4041
4042 retval = SUCCESS;
4043out:
4044 sdev_printk(KERN_INFO, scmd->device,
4045 "Host reset is %s for scmd(%p)\n",
4046 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4047
4048 return retval;
4049}
4050
4051/**
4052 * mpi3mr_eh_bus_reset - Bus reset error handling callback
4053 * @scmd: SCSI command reference
4054 *
4055 * Checks whether pending I/Os are present for the RAID volume;
4056 * if not there's no need to reset the adapter.
4057 *
4058 * Return: SUCCESS of successful reset else FAILED
4059 */
4060static int mpi3mr_eh_bus_reset(struct scsi_cmnd *scmd)
4061{
4062 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
4063 struct mpi3mr_stgt_priv_data *stgt_priv_data;
4064 struct mpi3mr_sdev_priv_data *sdev_priv_data;
4065 u8 dev_type = MPI3_DEVICE_DEVFORM_VD;
4066 int retval = FAILED;
4067
4068 sdev_priv_data = scmd->device->hostdata;
4069 if (sdev_priv_data && sdev_priv_data->tgt_priv_data) {
4070 stgt_priv_data = sdev_priv_data->tgt_priv_data;
4071 dev_type = stgt_priv_data->dev_type;
4072 }
4073
4074 if (dev_type == MPI3_DEVICE_DEVFORM_VD) {
4075 mpi3mr_wait_for_host_io(mrioc,
4076 MPI3MR_RAID_ERRREC_RESET_TIMEOUT);
4077 if (!mpi3mr_get_fw_pending_ios(mrioc))
4078 retval = SUCCESS;
4079 }
4080 if (retval == FAILED)
4081 mpi3mr_print_pending_host_io(mrioc);
4082
4083 sdev_printk(KERN_INFO, scmd->device,
4084 "Bus reset is %s for scmd(%p)\n",
4085 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4086 return retval;
4087}
4088
4089/**
4090 * mpi3mr_eh_target_reset - Target reset error handling callback
4091 * @scmd: SCSI command reference
4092 *
4093 * Issue Target reset Task Management and verify the scmd is
4094 * terminated successfully and return status accordingly.
4095 *
4096 * Return: SUCCESS of successful termination of the scmd else
4097 * FAILED
4098 */
4099static int mpi3mr_eh_target_reset(struct scsi_cmnd *scmd)
4100{
4101 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
4102 struct mpi3mr_stgt_priv_data *stgt_priv_data;
4103 struct mpi3mr_sdev_priv_data *sdev_priv_data;
4104 u16 dev_handle;
4105 u8 resp_code = 0;
4106 int retval = FAILED, ret = 0;
4107
4108 sdev_printk(KERN_INFO, scmd->device,
4109 "Attempting Target Reset! scmd(%p)\n", scmd);
4110 scsi_print_command(scmd);
4111
4112 sdev_priv_data = scmd->device->hostdata;
4113 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
4114 sdev_printk(KERN_INFO, scmd->device,
4115 "SCSI device is not available\n");
4116 retval = SUCCESS;
4117 goto out;
4118 }
4119
4120 stgt_priv_data = sdev_priv_data->tgt_priv_data;
4121 dev_handle = stgt_priv_data->dev_handle;
4122 if (stgt_priv_data->dev_removed) {
4123 struct scmd_priv *cmd_priv = scsi_cmd_priv(scmd);
4124 sdev_printk(KERN_INFO, scmd->device,
4125 "%s:target(handle = 0x%04x) is removed, target reset is not issued\n",
4126 mrioc->name, dev_handle);
4127 if (!cmd_priv->in_lld_scope || cmd_priv->host_tag == MPI3MR_HOSTTAG_INVALID)
4128 retval = SUCCESS;
4129 else
4130 retval = FAILED;
4131 goto out;
4132 }
4133 sdev_printk(KERN_INFO, scmd->device,
4134 "Target Reset is issued to handle(0x%04x)\n",
4135 dev_handle);
4136
4137 ret = mpi3mr_issue_tm(mrioc,
4138 MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET, dev_handle,
4139 sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
4140 MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, scmd);
4141
4142 if (ret)
4143 goto out;
4144
4145 if (stgt_priv_data->pend_count) {
4146 sdev_printk(KERN_INFO, scmd->device,
4147 "%s: target has %d pending commands, target reset is failed\n",
4148 mrioc->name, stgt_priv_data->pend_count);
4149 goto out;
4150 }
4151
4152 retval = SUCCESS;
4153out:
4154 sdev_printk(KERN_INFO, scmd->device,
4155 "%s: target reset is %s for scmd(%p)\n", mrioc->name,
4156 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4157
4158 return retval;
4159}
4160
4161/**
4162 * mpi3mr_eh_dev_reset- Device reset error handling callback
4163 * @scmd: SCSI command reference
4164 *
4165 * Issue lun reset Task Management and verify the scmd is
4166 * terminated successfully and return status accordingly.
4167 *
4168 * Return: SUCCESS of successful termination of the scmd else
4169 * FAILED
4170 */
4171static int mpi3mr_eh_dev_reset(struct scsi_cmnd *scmd)
4172{
4173 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host);
4174 struct mpi3mr_stgt_priv_data *stgt_priv_data;
4175 struct mpi3mr_sdev_priv_data *sdev_priv_data;
4176 u16 dev_handle;
4177 u8 resp_code = 0;
4178 int retval = FAILED, ret = 0;
4179
4180 sdev_printk(KERN_INFO, scmd->device,
4181 "Attempting Device(lun) Reset! scmd(%p)\n", scmd);
4182 scsi_print_command(scmd);
4183
4184 sdev_priv_data = scmd->device->hostdata;
4185 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
4186 sdev_printk(KERN_INFO, scmd->device,
4187 "SCSI device is not available\n");
4188 retval = SUCCESS;
4189 goto out;
4190 }
4191
4192 stgt_priv_data = sdev_priv_data->tgt_priv_data;
4193 dev_handle = stgt_priv_data->dev_handle;
4194 if (stgt_priv_data->dev_removed) {
4195 struct scmd_priv *cmd_priv = scsi_cmd_priv(scmd);
4196 sdev_printk(KERN_INFO, scmd->device,
4197 "%s: device(handle = 0x%04x) is removed, device(LUN) reset is not issued\n",
4198 mrioc->name, dev_handle);
4199 if (!cmd_priv->in_lld_scope || cmd_priv->host_tag == MPI3MR_HOSTTAG_INVALID)
4200 retval = SUCCESS;
4201 else
4202 retval = FAILED;
4203 goto out;
4204 }
4205 sdev_printk(KERN_INFO, scmd->device,
4206 "Device(lun) Reset is issued to handle(0x%04x)\n", dev_handle);
4207
4208 ret = mpi3mr_issue_tm(mrioc,
4209 MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, dev_handle,
4210 sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
4211 MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, scmd);
4212
4213 if (ret)
4214 goto out;
4215
4216 if (sdev_priv_data->pend_count) {
4217 sdev_printk(KERN_INFO, scmd->device,
4218 "%s: device has %d pending commands, device(LUN) reset is failed\n",
4219 mrioc->name, sdev_priv_data->pend_count);
4220 goto out;
4221 }
4222 retval = SUCCESS;
4223out:
4224 sdev_printk(KERN_INFO, scmd->device,
4225 "%s: device(LUN) reset is %s for scmd(%p)\n", mrioc->name,
4226 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4227
4228 return retval;
4229}
4230
4231/**
4232 * mpi3mr_scan_start - Scan start callback handler
4233 * @shost: SCSI host reference
4234 *
4235 * Issue port enable request asynchronously.
4236 *
4237 * Return: Nothing
4238 */
4239static void mpi3mr_scan_start(struct Scsi_Host *shost)
4240{
4241 struct mpi3mr_ioc *mrioc = shost_priv(shost);
4242
4243 mrioc->scan_started = 1;
4244 ioc_info(mrioc, "%s :Issuing Port Enable\n", __func__);
4245 if (mpi3mr_issue_port_enable(mrioc, 1)) {
4246 ioc_err(mrioc, "%s :Issuing port enable failed\n", __func__);
4247 mrioc->scan_started = 0;
4248 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
4249 }
4250}
4251
4252/**
4253 * mpi3mr_scan_finished - Scan finished callback handler
4254 * @shost: SCSI host reference
4255 * @time: Jiffies from the scan start
4256 *
4257 * Checks whether the port enable is completed or timedout or
4258 * failed and set the scan status accordingly after taking any
4259 * recovery if required.
4260 *
4261 * Return: 1 on scan finished or timed out, 0 for in progress
4262 */
4263static int mpi3mr_scan_finished(struct Scsi_Host *shost,
4264 unsigned long time)
4265{
4266 struct mpi3mr_ioc *mrioc = shost_priv(shost);
4267 u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT;
4268 u32 ioc_status = readl(&mrioc->sysif_regs->ioc_status);
4269
4270 if ((ioc_status & MPI3_SYSIF_IOC_STATUS_RESET_HISTORY) ||
4271 (ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT)) {
4272 ioc_err(mrioc, "port enable failed due to fault or reset\n");
4273 mpi3mr_print_fault_info(mrioc);
4274 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
4275 mrioc->scan_started = 0;
4276 mrioc->init_cmds.is_waiting = 0;
4277 mrioc->init_cmds.callback = NULL;
4278 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
4279 }
4280
4281 if (time >= (pe_timeout * HZ)) {
4282 ioc_err(mrioc, "port enable failed due to time out\n");
4283 mpi3mr_check_rh_fault_ioc(mrioc,
4284 MPI3MR_RESET_FROM_PE_TIMEOUT);
4285 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR;
4286 mrioc->scan_started = 0;
4287 mrioc->init_cmds.is_waiting = 0;
4288 mrioc->init_cmds.callback = NULL;
4289 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED;
4290 }
4291
4292 if (mrioc->scan_started)
4293 return 0;
4294
4295 if (mrioc->scan_failed) {
4296 ioc_err(mrioc,
4297 "port enable failed with status=0x%04x\n",
4298 mrioc->scan_failed);
4299 } else
4300 ioc_info(mrioc, "port enable is successfully completed\n");
4301
4302 mpi3mr_start_watchdog(mrioc);
4303 mrioc->is_driver_loading = 0;
4304 mrioc->stop_bsgs = 0;
4305 return 1;
4306}
4307
4308/**
4309 * mpi3mr_slave_destroy - Slave destroy callback handler
4310 * @sdev: SCSI device reference
4311 *
4312 * Cleanup and free per device(lun) private data.
4313 *
4314 * Return: Nothing.
4315 */
4316static void mpi3mr_slave_destroy(struct scsi_device *sdev)
4317{
4318 struct Scsi_Host *shost;
4319 struct mpi3mr_ioc *mrioc;
4320 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
4321 struct mpi3mr_tgt_dev *tgt_dev = NULL;
4322 unsigned long flags;
4323 struct scsi_target *starget;
4324 struct sas_rphy *rphy = NULL;
4325
4326 if (!sdev->hostdata)
4327 return;
4328
4329 starget = scsi_target(sdev);
4330 shost = dev_to_shost(&starget->dev);
4331 mrioc = shost_priv(shost);
4332 scsi_tgt_priv_data = starget->hostdata;
4333
4334 scsi_tgt_priv_data->num_luns--;
4335
4336 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4337 if (starget->channel == mrioc->scsi_device_channel)
4338 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
4339 else if (mrioc->sas_transport_enabled && !starget->channel) {
4340 rphy = dev_to_rphy(starget->dev.parent);
4341 tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
4342 rphy->identify.sas_address, rphy);
4343 }
4344
4345 if (tgt_dev && (!scsi_tgt_priv_data->num_luns))
4346 tgt_dev->starget = NULL;
4347 if (tgt_dev)
4348 mpi3mr_tgtdev_put(tgt_dev);
4349 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4350
4351 kfree(sdev->hostdata);
4352 sdev->hostdata = NULL;
4353}
4354
4355/**
4356 * mpi3mr_target_destroy - Target destroy callback handler
4357 * @starget: SCSI target reference
4358 *
4359 * Cleanup and free per target private data.
4360 *
4361 * Return: Nothing.
4362 */
4363static void mpi3mr_target_destroy(struct scsi_target *starget)
4364{
4365 struct Scsi_Host *shost;
4366 struct mpi3mr_ioc *mrioc;
4367 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
4368 struct mpi3mr_tgt_dev *tgt_dev;
4369 unsigned long flags;
4370
4371 if (!starget->hostdata)
4372 return;
4373
4374 shost = dev_to_shost(&starget->dev);
4375 mrioc = shost_priv(shost);
4376 scsi_tgt_priv_data = starget->hostdata;
4377
4378 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4379 tgt_dev = __mpi3mr_get_tgtdev_from_tgtpriv(mrioc, scsi_tgt_priv_data);
4380 if (tgt_dev && (tgt_dev->starget == starget) &&
4381 (tgt_dev->perst_id == starget->id))
4382 tgt_dev->starget = NULL;
4383 if (tgt_dev) {
4384 scsi_tgt_priv_data->tgt_dev = NULL;
4385 scsi_tgt_priv_data->perst_id = 0;
4386 mpi3mr_tgtdev_put(tgt_dev);
4387 mpi3mr_tgtdev_put(tgt_dev);
4388 }
4389 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4390
4391 kfree(starget->hostdata);
4392 starget->hostdata = NULL;
4393}
4394
4395/**
4396 * mpi3mr_slave_configure - Slave configure callback handler
4397 * @sdev: SCSI device reference
4398 *
4399 * Configure queue depth, max hardware sectors and virt boundary
4400 * as required
4401 *
4402 * Return: 0 always.
4403 */
4404static int mpi3mr_slave_configure(struct scsi_device *sdev)
4405{
4406 struct scsi_target *starget;
4407 struct Scsi_Host *shost;
4408 struct mpi3mr_ioc *mrioc;
4409 struct mpi3mr_tgt_dev *tgt_dev = NULL;
4410 unsigned long flags;
4411 int retval = 0;
4412 struct sas_rphy *rphy = NULL;
4413
4414 starget = scsi_target(sdev);
4415 shost = dev_to_shost(&starget->dev);
4416 mrioc = shost_priv(shost);
4417
4418 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4419 if (starget->channel == mrioc->scsi_device_channel)
4420 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
4421 else if (mrioc->sas_transport_enabled && !starget->channel) {
4422 rphy = dev_to_rphy(starget->dev.parent);
4423 tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
4424 rphy->identify.sas_address, rphy);
4425 }
4426 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4427 if (!tgt_dev)
4428 return -ENXIO;
4429
4430 mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth);
4431
4432 sdev->eh_timeout = MPI3MR_EH_SCMD_TIMEOUT;
4433 blk_queue_rq_timeout(sdev->request_queue, MPI3MR_SCMD_TIMEOUT);
4434
4435 switch (tgt_dev->dev_type) {
4436 case MPI3_DEVICE_DEVFORM_PCIE:
4437 /*The block layer hw sector size = 512*/
4438 if ((tgt_dev->dev_spec.pcie_inf.dev_info &
4439 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
4440 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) {
4441 blk_queue_max_hw_sectors(sdev->request_queue,
4442 tgt_dev->dev_spec.pcie_inf.mdts / 512);
4443 if (tgt_dev->dev_spec.pcie_inf.pgsz == 0)
4444 blk_queue_virt_boundary(sdev->request_queue,
4445 ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1));
4446 else
4447 blk_queue_virt_boundary(sdev->request_queue,
4448 ((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1));
4449 }
4450 break;
4451 default:
4452 break;
4453 }
4454
4455 mpi3mr_tgtdev_put(tgt_dev);
4456
4457 return retval;
4458}
4459
4460/**
4461 * mpi3mr_slave_alloc -Slave alloc callback handler
4462 * @sdev: SCSI device reference
4463 *
4464 * Allocate per device(lun) private data and initialize it.
4465 *
4466 * Return: 0 on success -ENOMEM on memory allocation failure.
4467 */
4468static int mpi3mr_slave_alloc(struct scsi_device *sdev)
4469{
4470 struct Scsi_Host *shost;
4471 struct mpi3mr_ioc *mrioc;
4472 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
4473 struct mpi3mr_tgt_dev *tgt_dev = NULL;
4474 struct mpi3mr_sdev_priv_data *scsi_dev_priv_data;
4475 unsigned long flags;
4476 struct scsi_target *starget;
4477 int retval = 0;
4478 struct sas_rphy *rphy = NULL;
4479
4480 starget = scsi_target(sdev);
4481 shost = dev_to_shost(&starget->dev);
4482 mrioc = shost_priv(shost);
4483 scsi_tgt_priv_data = starget->hostdata;
4484
4485 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4486
4487 if (starget->channel == mrioc->scsi_device_channel)
4488 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
4489 else if (mrioc->sas_transport_enabled && !starget->channel) {
4490 rphy = dev_to_rphy(starget->dev.parent);
4491 tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
4492 rphy->identify.sas_address, rphy);
4493 }
4494
4495 if (tgt_dev) {
4496 if (tgt_dev->starget == NULL)
4497 tgt_dev->starget = starget;
4498 mpi3mr_tgtdev_put(tgt_dev);
4499 retval = 0;
4500 } else {
4501 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4502 return -ENXIO;
4503 }
4504
4505 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4506
4507 scsi_dev_priv_data = kzalloc(sizeof(*scsi_dev_priv_data), GFP_KERNEL);
4508 if (!scsi_dev_priv_data)
4509 return -ENOMEM;
4510
4511 scsi_dev_priv_data->lun_id = sdev->lun;
4512 scsi_dev_priv_data->tgt_priv_data = scsi_tgt_priv_data;
4513 sdev->hostdata = scsi_dev_priv_data;
4514
4515 scsi_tgt_priv_data->num_luns++;
4516
4517 return retval;
4518}
4519
4520/**
4521 * mpi3mr_target_alloc - Target alloc callback handler
4522 * @starget: SCSI target reference
4523 *
4524 * Allocate per target private data and initialize it.
4525 *
4526 * Return: 0 on success -ENOMEM on memory allocation failure.
4527 */
4528static int mpi3mr_target_alloc(struct scsi_target *starget)
4529{
4530 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4531 struct mpi3mr_ioc *mrioc = shost_priv(shost);
4532 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data;
4533 struct mpi3mr_tgt_dev *tgt_dev;
4534 unsigned long flags;
4535 int retval = 0;
4536 struct sas_rphy *rphy = NULL;
4537
4538 scsi_tgt_priv_data = kzalloc(sizeof(*scsi_tgt_priv_data), GFP_KERNEL);
4539 if (!scsi_tgt_priv_data)
4540 return -ENOMEM;
4541
4542 starget->hostdata = scsi_tgt_priv_data;
4543
4544 spin_lock_irqsave(&mrioc->tgtdev_lock, flags);
4545 if (starget->channel == mrioc->scsi_device_channel) {
4546 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id);
4547 if (tgt_dev && !tgt_dev->is_hidden) {
4548 scsi_tgt_priv_data->starget = starget;
4549 scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle;
4550 scsi_tgt_priv_data->perst_id = tgt_dev->perst_id;
4551 scsi_tgt_priv_data->dev_type = tgt_dev->dev_type;
4552 scsi_tgt_priv_data->tgt_dev = tgt_dev;
4553 tgt_dev->starget = starget;
4554 atomic_set(&scsi_tgt_priv_data->block_io, 0);
4555 retval = 0;
4556 if ((tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_PCIE) &&
4557 ((tgt_dev->dev_spec.pcie_inf.dev_info &
4558 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) ==
4559 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) &&
4560 ((tgt_dev->dev_spec.pcie_inf.dev_info &
4561 MPI3_DEVICE0_PCIE_DEVICE_INFO_PITYPE_MASK) !=
4562 MPI3_DEVICE0_PCIE_DEVICE_INFO_PITYPE_0))
4563 scsi_tgt_priv_data->dev_nvme_dif = 1;
4564 scsi_tgt_priv_data->io_throttle_enabled = tgt_dev->io_throttle_enabled;
4565 scsi_tgt_priv_data->wslen = tgt_dev->wslen;
4566 if (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_VD)
4567 scsi_tgt_priv_data->throttle_group = tgt_dev->dev_spec.vd_inf.tg;
4568 } else
4569 retval = -ENXIO;
4570 } else if (mrioc->sas_transport_enabled && !starget->channel) {
4571 rphy = dev_to_rphy(starget->dev.parent);
4572 tgt_dev = __mpi3mr_get_tgtdev_by_addr_and_rphy(mrioc,
4573 rphy->identify.sas_address, rphy);
4574 if (tgt_dev && !tgt_dev->is_hidden && !tgt_dev->non_stl &&
4575 (tgt_dev->dev_type == MPI3_DEVICE_DEVFORM_SAS_SATA)) {
4576 scsi_tgt_priv_data->starget = starget;
4577 scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle;
4578 scsi_tgt_priv_data->perst_id = tgt_dev->perst_id;
4579 scsi_tgt_priv_data->dev_type = tgt_dev->dev_type;
4580 scsi_tgt_priv_data->tgt_dev = tgt_dev;
4581 scsi_tgt_priv_data->io_throttle_enabled = tgt_dev->io_throttle_enabled;
4582 scsi_tgt_priv_data->wslen = tgt_dev->wslen;
4583 tgt_dev->starget = starget;
4584 atomic_set(&scsi_tgt_priv_data->block_io, 0);
4585 retval = 0;
4586 } else
4587 retval = -ENXIO;
4588 }
4589 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags);
4590
4591 return retval;
4592}
4593
4594/**
4595 * mpi3mr_check_return_unmap - Whether an unmap is allowed
4596 * @mrioc: Adapter instance reference
4597 * @scmd: SCSI Command reference
4598 *
4599 * The controller hardware cannot handle certain unmap commands
4600 * for NVMe drives, this routine checks those and return true
4601 * and completes the SCSI command with proper status and sense
4602 * data.
4603 *
4604 * Return: TRUE for not allowed unmap, FALSE otherwise.
4605 */
4606static bool mpi3mr_check_return_unmap(struct mpi3mr_ioc *mrioc,
4607 struct scsi_cmnd *scmd)
4608{
4609 unsigned char *buf;
4610 u16 param_len, desc_len, trunc_param_len;
4611
4612 trunc_param_len = param_len = get_unaligned_be16(scmd->cmnd + 7);
4613
4614 if (mrioc->pdev->revision) {
4615 if ((param_len > 24) && ((param_len - 8) & 0xF)) {
4616 trunc_param_len -= (param_len - 8) & 0xF;
4617 dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR);
4618 dprint_scsi_err(mrioc,
4619 "truncating param_len from (%d) to (%d)\n",
4620 param_len, trunc_param_len);
4621 put_unaligned_be16(trunc_param_len, scmd->cmnd + 7);
4622 dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR);
4623 }
4624 return false;
4625 }
4626
4627 if (!param_len) {
4628 ioc_warn(mrioc,
4629 "%s: cdb received with zero parameter length\n",
4630 __func__);
4631 scsi_print_command(scmd);
4632 scmd->result = DID_OK << 16;
4633 scsi_done(scmd);
4634 return true;
4635 }
4636
4637 if (param_len < 24) {
4638 ioc_warn(mrioc,
4639 "%s: cdb received with invalid param_len: %d\n",
4640 __func__, param_len);
4641 scsi_print_command(scmd);
4642 scmd->result = SAM_STAT_CHECK_CONDITION;
4643 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
4644 0x1A, 0);
4645 scsi_done(scmd);
4646 return true;
4647 }
4648 if (param_len != scsi_bufflen(scmd)) {
4649 ioc_warn(mrioc,
4650 "%s: cdb received with param_len: %d bufflen: %d\n",
4651 __func__, param_len, scsi_bufflen(scmd));
4652 scsi_print_command(scmd);
4653 scmd->result = SAM_STAT_CHECK_CONDITION;
4654 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
4655 0x1A, 0);
4656 scsi_done(scmd);
4657 return true;
4658 }
4659 buf = kzalloc(scsi_bufflen(scmd), GFP_ATOMIC);
4660 if (!buf) {
4661 scsi_print_command(scmd);
4662 scmd->result = SAM_STAT_CHECK_CONDITION;
4663 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
4664 0x55, 0x03);
4665 scsi_done(scmd);
4666 return true;
4667 }
4668 scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd));
4669 desc_len = get_unaligned_be16(&buf[2]);
4670
4671 if (desc_len < 16) {
4672 ioc_warn(mrioc,
4673 "%s: Invalid descriptor length in param list: %d\n",
4674 __func__, desc_len);
4675 scsi_print_command(scmd);
4676 scmd->result = SAM_STAT_CHECK_CONDITION;
4677 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST,
4678 0x26, 0);
4679 scsi_done(scmd);
4680 kfree(buf);
4681 return true;
4682 }
4683
4684 if (param_len > (desc_len + 8)) {
4685 trunc_param_len = desc_len + 8;
4686 scsi_print_command(scmd);
4687 dprint_scsi_err(mrioc,
4688 "truncating param_len(%d) to desc_len+8(%d)\n",
4689 param_len, trunc_param_len);
4690 put_unaligned_be16(trunc_param_len, scmd->cmnd + 7);
4691 scsi_print_command(scmd);
4692 }
4693
4694 kfree(buf);
4695 return false;
4696}
4697
4698/**
4699 * mpi3mr_allow_scmd_to_fw - Command is allowed during shutdown
4700 * @scmd: SCSI Command reference
4701 *
4702 * Checks whether a cdb is allowed during shutdown or not.
4703 *
4704 * Return: TRUE for allowed commands, FALSE otherwise.
4705 */
4706
4707inline bool mpi3mr_allow_scmd_to_fw(struct scsi_cmnd *scmd)
4708{
4709 switch (scmd->cmnd[0]) {
4710 case SYNCHRONIZE_CACHE:
4711 case START_STOP:
4712 return true;
4713 default:
4714 return false;
4715 }
4716}
4717
4718/**
4719 * mpi3mr_qcmd - I/O request despatcher
4720 * @shost: SCSI Host reference
4721 * @scmd: SCSI Command reference
4722 *
4723 * Issues the SCSI Command as an MPI3 request.
4724 *
4725 * Return: 0 on successful queueing of the request or if the
4726 * request is completed with failure.
4727 * SCSI_MLQUEUE_DEVICE_BUSY when the device is busy.
4728 * SCSI_MLQUEUE_HOST_BUSY when the host queue is full.
4729 */
4730static int mpi3mr_qcmd(struct Scsi_Host *shost,
4731 struct scsi_cmnd *scmd)
4732{
4733 struct mpi3mr_ioc *mrioc = shost_priv(shost);
4734 struct mpi3mr_stgt_priv_data *stgt_priv_data;
4735 struct mpi3mr_sdev_priv_data *sdev_priv_data;
4736 struct scmd_priv *scmd_priv_data = NULL;
4737 struct mpi3_scsi_io_request *scsiio_req = NULL;
4738 struct op_req_qinfo *op_req_q = NULL;
4739 int retval = 0;
4740 u16 dev_handle;
4741 u16 host_tag;
4742 u32 scsiio_flags = 0, data_len_blks = 0;
4743 struct request *rq = scsi_cmd_to_rq(scmd);
4744 int iprio_class;
4745 u8 is_pcie_dev = 0;
4746 u32 tracked_io_sz = 0;
4747 u32 ioc_pend_data_len = 0, tg_pend_data_len = 0;
4748 struct mpi3mr_throttle_group_info *tg = NULL;
4749
4750 if (mrioc->unrecoverable) {
4751 scmd->result = DID_ERROR << 16;
4752 scsi_done(scmd);
4753 goto out;
4754 }
4755
4756 sdev_priv_data = scmd->device->hostdata;
4757 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) {
4758 scmd->result = DID_NO_CONNECT << 16;
4759 scsi_done(scmd);
4760 goto out;
4761 }
4762
4763 if (mrioc->stop_drv_processing &&
4764 !(mpi3mr_allow_scmd_to_fw(scmd))) {
4765 scmd->result = DID_NO_CONNECT << 16;
4766 scsi_done(scmd);
4767 goto out;
4768 }
4769
4770 stgt_priv_data = sdev_priv_data->tgt_priv_data;
4771 dev_handle = stgt_priv_data->dev_handle;
4772
4773 /* Avoid error handling escalation when device is removed or blocked */
4774
4775 if (scmd->device->host->shost_state == SHOST_RECOVERY &&
4776 scmd->cmnd[0] == TEST_UNIT_READY &&
4777 (stgt_priv_data->dev_removed || (dev_handle == MPI3MR_INVALID_DEV_HANDLE))) {
4778 scsi_build_sense(scmd, 0, UNIT_ATTENTION, 0x29, 0x07);
4779 scsi_done(scmd);
4780 goto out;
4781 }
4782
4783 if (mrioc->reset_in_progress) {
4784 retval = SCSI_MLQUEUE_HOST_BUSY;
4785 goto out;
4786 }
4787
4788 if (atomic_read(&stgt_priv_data->block_io)) {
4789 if (mrioc->stop_drv_processing) {
4790 scmd->result = DID_NO_CONNECT << 16;
4791 scsi_done(scmd);
4792 goto out;
4793 }
4794 retval = SCSI_MLQUEUE_DEVICE_BUSY;
4795 goto out;
4796 }
4797
4798 if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) {
4799 scmd->result = DID_NO_CONNECT << 16;
4800 scsi_done(scmd);
4801 goto out;
4802 }
4803 if (stgt_priv_data->dev_removed) {
4804 scmd->result = DID_NO_CONNECT << 16;
4805 scsi_done(scmd);
4806 goto out;
4807 }
4808
4809 if (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE)
4810 is_pcie_dev = 1;
4811 if ((scmd->cmnd[0] == UNMAP) && is_pcie_dev &&
4812 (mrioc->pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) &&
4813 mpi3mr_check_return_unmap(mrioc, scmd))
4814 goto out;
4815
4816 host_tag = mpi3mr_host_tag_for_scmd(mrioc, scmd);
4817 if (host_tag == MPI3MR_HOSTTAG_INVALID) {
4818 scmd->result = DID_ERROR << 16;
4819 scsi_done(scmd);
4820 goto out;
4821 }
4822
4823 if (scmd->sc_data_direction == DMA_FROM_DEVICE)
4824 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_READ;
4825 else if (scmd->sc_data_direction == DMA_TO_DEVICE)
4826 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_WRITE;
4827 else
4828 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_NO_DATA_TRANSFER;
4829
4830 scsiio_flags |= MPI3_SCSIIO_FLAGS_TASKATTRIBUTE_SIMPLEQ;
4831
4832 if (sdev_priv_data->ncq_prio_enable) {
4833 iprio_class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq));
4834 if (iprio_class == IOPRIO_CLASS_RT)
4835 scsiio_flags |= 1 << MPI3_SCSIIO_FLAGS_CMDPRI_SHIFT;
4836 }
4837
4838 if (scmd->cmd_len > 16)
4839 scsiio_flags |= MPI3_SCSIIO_FLAGS_CDB_GREATER_THAN_16;
4840
4841 scmd_priv_data = scsi_cmd_priv(scmd);
4842 memset(scmd_priv_data->mpi3mr_scsiio_req, 0, MPI3MR_ADMIN_REQ_FRAME_SZ);
4843 scsiio_req = (struct mpi3_scsi_io_request *)scmd_priv_data->mpi3mr_scsiio_req;
4844 scsiio_req->function = MPI3_FUNCTION_SCSI_IO;
4845 scsiio_req->host_tag = cpu_to_le16(host_tag);
4846
4847 mpi3mr_setup_eedp(mrioc, scmd, scsiio_req);
4848
4849 if (stgt_priv_data->wslen)
4850 mpi3mr_setup_divert_ws(mrioc, scmd, scsiio_req, &scsiio_flags,
4851 stgt_priv_data->wslen);
4852
4853 memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len);
4854 scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd));
4855 scsiio_req->dev_handle = cpu_to_le16(dev_handle);
4856 scsiio_req->flags = cpu_to_le32(scsiio_flags);
4857 int_to_scsilun(sdev_priv_data->lun_id,
4858 (struct scsi_lun *)scsiio_req->lun);
4859
4860 if (mpi3mr_build_sg_scmd(mrioc, scmd, scsiio_req)) {
4861 mpi3mr_clear_scmd_priv(mrioc, scmd);
4862 retval = SCSI_MLQUEUE_HOST_BUSY;
4863 goto out;
4864 }
4865 op_req_q = &mrioc->req_qinfo[scmd_priv_data->req_q_idx];
4866 data_len_blks = scsi_bufflen(scmd) >> 9;
4867 if ((data_len_blks >= mrioc->io_throttle_data_length) &&
4868 stgt_priv_data->io_throttle_enabled) {
4869 tracked_io_sz = data_len_blks;
4870 tg = stgt_priv_data->throttle_group;
4871 if (tg) {
4872 ioc_pend_data_len = atomic_add_return(data_len_blks,
4873 &mrioc->pend_large_data_sz);
4874 tg_pend_data_len = atomic_add_return(data_len_blks,
4875 &tg->pend_large_data_sz);
4876 if (!tg->io_divert && ((ioc_pend_data_len >=
4877 mrioc->io_throttle_high) ||
4878 (tg_pend_data_len >= tg->high))) {
4879 tg->io_divert = 1;
4880 tg->need_qd_reduction = 1;
4881 mpi3mr_set_io_divert_for_all_vd_in_tg(mrioc,
4882 tg, 1);
4883 mpi3mr_queue_qd_reduction_event(mrioc, tg);
4884 }
4885 } else {
4886 ioc_pend_data_len = atomic_add_return(data_len_blks,
4887 &mrioc->pend_large_data_sz);
4888 if (ioc_pend_data_len >= mrioc->io_throttle_high)
4889 stgt_priv_data->io_divert = 1;
4890 }
4891 }
4892
4893 if (stgt_priv_data->io_divert) {
4894 scsiio_req->msg_flags |=
4895 MPI3_SCSIIO_MSGFLAGS_DIVERT_TO_FIRMWARE;
4896 scsiio_flags |= MPI3_SCSIIO_FLAGS_DIVERT_REASON_IO_THROTTLING;
4897 }
4898 scsiio_req->flags = cpu_to_le32(scsiio_flags);
4899
4900 if (mpi3mr_op_request_post(mrioc, op_req_q,
4901 scmd_priv_data->mpi3mr_scsiio_req)) {
4902 mpi3mr_clear_scmd_priv(mrioc, scmd);
4903 retval = SCSI_MLQUEUE_HOST_BUSY;
4904 if (tracked_io_sz) {
4905 atomic_sub(tracked_io_sz, &mrioc->pend_large_data_sz);
4906 if (tg)
4907 atomic_sub(tracked_io_sz,
4908 &tg->pend_large_data_sz);
4909 }
4910 goto out;
4911 }
4912
4913out:
4914 return retval;
4915}
4916
4917static const struct scsi_host_template mpi3mr_driver_template = {
4918 .module = THIS_MODULE,
4919 .name = "MPI3 Storage Controller",
4920 .proc_name = MPI3MR_DRIVER_NAME,
4921 .queuecommand = mpi3mr_qcmd,
4922 .target_alloc = mpi3mr_target_alloc,
4923 .slave_alloc = mpi3mr_slave_alloc,
4924 .slave_configure = mpi3mr_slave_configure,
4925 .target_destroy = mpi3mr_target_destroy,
4926 .slave_destroy = mpi3mr_slave_destroy,
4927 .scan_finished = mpi3mr_scan_finished,
4928 .scan_start = mpi3mr_scan_start,
4929 .change_queue_depth = mpi3mr_change_queue_depth,
4930 .eh_device_reset_handler = mpi3mr_eh_dev_reset,
4931 .eh_target_reset_handler = mpi3mr_eh_target_reset,
4932 .eh_bus_reset_handler = mpi3mr_eh_bus_reset,
4933 .eh_host_reset_handler = mpi3mr_eh_host_reset,
4934 .bios_param = mpi3mr_bios_param,
4935 .map_queues = mpi3mr_map_queues,
4936 .mq_poll = mpi3mr_blk_mq_poll,
4937 .no_write_same = 1,
4938 .can_queue = 1,
4939 .this_id = -1,
4940 .sg_tablesize = MPI3MR_DEFAULT_SGL_ENTRIES,
4941 /* max xfer supported is 1M (2K in 512 byte sized sectors)
4942 */
4943 .max_sectors = (MPI3MR_DEFAULT_MAX_IO_SIZE / 512),
4944 .cmd_per_lun = MPI3MR_MAX_CMDS_LUN,
4945 .max_segment_size = 0xffffffff,
4946 .track_queue_depth = 1,
4947 .cmd_size = sizeof(struct scmd_priv),
4948 .shost_groups = mpi3mr_host_groups,
4949 .sdev_groups = mpi3mr_dev_groups,
4950};
4951
4952/**
4953 * mpi3mr_init_drv_cmd - Initialize internal command tracker
4954 * @cmdptr: Internal command tracker
4955 * @host_tag: Host tag used for the specific command
4956 *
4957 * Initialize the internal command tracker structure with
4958 * specified host tag.
4959 *
4960 * Return: Nothing.
4961 */
4962static inline void mpi3mr_init_drv_cmd(struct mpi3mr_drv_cmd *cmdptr,
4963 u16 host_tag)
4964{
4965 mutex_init(&cmdptr->mutex);
4966 cmdptr->reply = NULL;
4967 cmdptr->state = MPI3MR_CMD_NOTUSED;
4968 cmdptr->dev_handle = MPI3MR_INVALID_DEV_HANDLE;
4969 cmdptr->host_tag = host_tag;
4970}
4971
4972/**
4973 * osintfc_mrioc_security_status -Check controller secure status
4974 * @pdev: PCI device instance
4975 *
4976 * Read the Device Serial Number capability from PCI config
4977 * space and decide whether the controller is secure or not.
4978 *
4979 * Return: 0 on success, non-zero on failure.
4980 */
4981static int
4982osintfc_mrioc_security_status(struct pci_dev *pdev)
4983{
4984 u32 cap_data;
4985 int base;
4986 u32 ctlr_status;
4987 u32 debug_status;
4988 int retval = 0;
4989
4990 base = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DSN);
4991 if (!base) {
4992 dev_err(&pdev->dev,
4993 "%s: PCI_EXT_CAP_ID_DSN is not supported\n", __func__);
4994 return -1;
4995 }
4996
4997 pci_read_config_dword(pdev, base + 4, &cap_data);
4998
4999 debug_status = cap_data & MPI3MR_CTLR_SECURE_DBG_STATUS_MASK;
5000 ctlr_status = cap_data & MPI3MR_CTLR_SECURITY_STATUS_MASK;
5001
5002 switch (ctlr_status) {
5003 case MPI3MR_INVALID_DEVICE:
5004 dev_err(&pdev->dev,
5005 "%s: Non secure ctlr (Invalid) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
5006 __func__, pdev->device, pdev->subsystem_vendor,
5007 pdev->subsystem_device);
5008 retval = -1;
5009 break;
5010 case MPI3MR_CONFIG_SECURE_DEVICE:
5011 if (!debug_status)
5012 dev_info(&pdev->dev,
5013 "%s: Config secure ctlr is detected\n",
5014 __func__);
5015 break;
5016 case MPI3MR_HARD_SECURE_DEVICE:
5017 break;
5018 case MPI3MR_TAMPERED_DEVICE:
5019 dev_err(&pdev->dev,
5020 "%s: Non secure ctlr (Tampered) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
5021 __func__, pdev->device, pdev->subsystem_vendor,
5022 pdev->subsystem_device);
5023 retval = -1;
5024 break;
5025 default:
5026 retval = -1;
5027 break;
5028 }
5029
5030 if (!retval && debug_status) {
5031 dev_err(&pdev->dev,
5032 "%s: Non secure ctlr (Secure Dbg) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n",
5033 __func__, pdev->device, pdev->subsystem_vendor,
5034 pdev->subsystem_device);
5035 retval = -1;
5036 }
5037
5038 return retval;
5039}
5040
5041/**
5042 * mpi3mr_probe - PCI probe callback
5043 * @pdev: PCI device instance
5044 * @id: PCI device ID details
5045 *
5046 * controller initialization routine. Checks the security status
5047 * of the controller and if it is invalid or tampered return the
5048 * probe without initializing the controller. Otherwise,
5049 * allocate per adapter instance through shost_priv and
5050 * initialize controller specific data structures, initializae
5051 * the controller hardware, add shost to the SCSI subsystem.
5052 *
5053 * Return: 0 on success, non-zero on failure.
5054 */
5055
5056static int
5057mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id)
5058{
5059 struct mpi3mr_ioc *mrioc = NULL;
5060 struct Scsi_Host *shost = NULL;
5061 int retval = 0, i;
5062
5063 if (osintfc_mrioc_security_status(pdev)) {
5064 warn_non_secure_ctlr = 1;
5065 return 1; /* For Invalid and Tampered device */
5066 }
5067
5068 shost = scsi_host_alloc(&mpi3mr_driver_template,
5069 sizeof(struct mpi3mr_ioc));
5070 if (!shost) {
5071 retval = -ENODEV;
5072 goto shost_failed;
5073 }
5074
5075 mrioc = shost_priv(shost);
5076 retval = ida_alloc_range(&mrioc_ida, 1, U8_MAX, GFP_KERNEL);
5077 if (retval < 0)
5078 goto id_alloc_failed;
5079 mrioc->id = (u8)retval;
5080 sprintf(mrioc->driver_name, "%s", MPI3MR_DRIVER_NAME);
5081 sprintf(mrioc->name, "%s%d", mrioc->driver_name, mrioc->id);
5082 INIT_LIST_HEAD(&mrioc->list);
5083 spin_lock(&mrioc_list_lock);
5084 list_add_tail(&mrioc->list, &mrioc_list);
5085 spin_unlock(&mrioc_list_lock);
5086
5087 spin_lock_init(&mrioc->admin_req_lock);
5088 spin_lock_init(&mrioc->reply_free_queue_lock);
5089 spin_lock_init(&mrioc->sbq_lock);
5090 spin_lock_init(&mrioc->fwevt_lock);
5091 spin_lock_init(&mrioc->tgtdev_lock);
5092 spin_lock_init(&mrioc->watchdog_lock);
5093 spin_lock_init(&mrioc->chain_buf_lock);
5094 spin_lock_init(&mrioc->sas_node_lock);
5095
5096 INIT_LIST_HEAD(&mrioc->fwevt_list);
5097 INIT_LIST_HEAD(&mrioc->tgtdev_list);
5098 INIT_LIST_HEAD(&mrioc->delayed_rmhs_list);
5099 INIT_LIST_HEAD(&mrioc->delayed_evtack_cmds_list);
5100 INIT_LIST_HEAD(&mrioc->sas_expander_list);
5101 INIT_LIST_HEAD(&mrioc->hba_port_table_list);
5102 INIT_LIST_HEAD(&mrioc->enclosure_list);
5103
5104 mutex_init(&mrioc->reset_mutex);
5105 mpi3mr_init_drv_cmd(&mrioc->init_cmds, MPI3MR_HOSTTAG_INITCMDS);
5106 mpi3mr_init_drv_cmd(&mrioc->host_tm_cmds, MPI3MR_HOSTTAG_BLK_TMS);
5107 mpi3mr_init_drv_cmd(&mrioc->bsg_cmds, MPI3MR_HOSTTAG_BSG_CMDS);
5108 mpi3mr_init_drv_cmd(&mrioc->cfg_cmds, MPI3MR_HOSTTAG_CFG_CMDS);
5109 mpi3mr_init_drv_cmd(&mrioc->transport_cmds,
5110 MPI3MR_HOSTTAG_TRANSPORT_CMDS);
5111
5112 for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++)
5113 mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i],
5114 MPI3MR_HOSTTAG_DEVRMCMD_MIN + i);
5115
5116 for (i = 0; i < MPI3MR_NUM_EVTACKCMD; i++)
5117 mpi3mr_init_drv_cmd(&mrioc->evtack_cmds[i],
5118 MPI3MR_HOSTTAG_EVTACKCMD_MIN + i);
5119
5120 if ((pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) &&
5121 !pdev->revision)
5122 mrioc->enable_segqueue = false;
5123 else
5124 mrioc->enable_segqueue = true;
5125
5126 init_waitqueue_head(&mrioc->reset_waitq);
5127 mrioc->logging_level = logging_level;
5128 mrioc->shost = shost;
5129 mrioc->pdev = pdev;
5130 mrioc->stop_bsgs = 1;
5131
5132 mrioc->max_sgl_entries = max_sgl_entries;
5133 if (max_sgl_entries > MPI3MR_MAX_SGL_ENTRIES)
5134 mrioc->max_sgl_entries = MPI3MR_MAX_SGL_ENTRIES;
5135 else if (max_sgl_entries < MPI3MR_DEFAULT_SGL_ENTRIES)
5136 mrioc->max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES;
5137 else {
5138 mrioc->max_sgl_entries /= MPI3MR_DEFAULT_SGL_ENTRIES;
5139 mrioc->max_sgl_entries *= MPI3MR_DEFAULT_SGL_ENTRIES;
5140 }
5141
5142 /* init shost parameters */
5143 shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH;
5144 shost->max_lun = -1;
5145 shost->unique_id = mrioc->id;
5146
5147 shost->max_channel = 0;
5148 shost->max_id = 0xFFFFFFFF;
5149
5150 shost->host_tagset = 1;
5151
5152 if (prot_mask >= 0)
5153 scsi_host_set_prot(shost, prot_mask);
5154 else {
5155 prot_mask = SHOST_DIF_TYPE1_PROTECTION
5156 | SHOST_DIF_TYPE2_PROTECTION
5157 | SHOST_DIF_TYPE3_PROTECTION;
5158 scsi_host_set_prot(shost, prot_mask);
5159 }
5160
5161 ioc_info(mrioc,
5162 "%s :host protection capabilities enabled %s%s%s%s%s%s%s\n",
5163 __func__,
5164 (prot_mask & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "",
5165 (prot_mask & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "",
5166 (prot_mask & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "",
5167 (prot_mask & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "",
5168 (prot_mask & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "",
5169 (prot_mask & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "",
5170 (prot_mask & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : "");
5171
5172 if (prot_guard_mask)
5173 scsi_host_set_guard(shost, (prot_guard_mask & 3));
5174 else
5175 scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC);
5176
5177 snprintf(mrioc->fwevt_worker_name, sizeof(mrioc->fwevt_worker_name),
5178 "%s%d_fwevt_wrkr", mrioc->driver_name, mrioc->id);
5179 mrioc->fwevt_worker_thread = alloc_ordered_workqueue(
5180 mrioc->fwevt_worker_name, 0);
5181 if (!mrioc->fwevt_worker_thread) {
5182 ioc_err(mrioc, "failure at %s:%d/%s()!\n",
5183 __FILE__, __LINE__, __func__);
5184 retval = -ENODEV;
5185 goto fwevtthread_failed;
5186 }
5187
5188 mrioc->is_driver_loading = 1;
5189 mrioc->cpu_count = num_online_cpus();
5190 if (mpi3mr_setup_resources(mrioc)) {
5191 ioc_err(mrioc, "setup resources failed\n");
5192 retval = -ENODEV;
5193 goto resource_alloc_failed;
5194 }
5195 if (mpi3mr_init_ioc(mrioc)) {
5196 ioc_err(mrioc, "initializing IOC failed\n");
5197 retval = -ENODEV;
5198 goto init_ioc_failed;
5199 }
5200
5201 shost->nr_hw_queues = mrioc->num_op_reply_q;
5202 if (mrioc->active_poll_qcount)
5203 shost->nr_maps = 3;
5204
5205 shost->can_queue = mrioc->max_host_ios;
5206 shost->sg_tablesize = mrioc->max_sgl_entries;
5207 shost->max_id = mrioc->facts.max_perids + 1;
5208
5209 retval = scsi_add_host(shost, &pdev->dev);
5210 if (retval) {
5211 ioc_err(mrioc, "failure at %s:%d/%s()!\n",
5212 __FILE__, __LINE__, __func__);
5213 goto addhost_failed;
5214 }
5215
5216 scsi_scan_host(shost);
5217 mpi3mr_bsg_init(mrioc);
5218 return retval;
5219
5220addhost_failed:
5221 mpi3mr_stop_watchdog(mrioc);
5222 mpi3mr_cleanup_ioc(mrioc);
5223init_ioc_failed:
5224 mpi3mr_free_mem(mrioc);
5225 mpi3mr_cleanup_resources(mrioc);
5226resource_alloc_failed:
5227 destroy_workqueue(mrioc->fwevt_worker_thread);
5228fwevtthread_failed:
5229 ida_free(&mrioc_ida, mrioc->id);
5230 spin_lock(&mrioc_list_lock);
5231 list_del(&mrioc->list);
5232 spin_unlock(&mrioc_list_lock);
5233id_alloc_failed:
5234 scsi_host_put(shost);
5235shost_failed:
5236 return retval;
5237}
5238
5239/**
5240 * mpi3mr_remove - PCI remove callback
5241 * @pdev: PCI device instance
5242 *
5243 * Cleanup the IOC by issuing MUR and shutdown notification.
5244 * Free up all memory and resources associated with the
5245 * controllerand target devices, unregister the shost.
5246 *
5247 * Return: Nothing.
5248 */
5249static void mpi3mr_remove(struct pci_dev *pdev)
5250{
5251 struct Scsi_Host *shost = pci_get_drvdata(pdev);
5252 struct mpi3mr_ioc *mrioc;
5253 struct workqueue_struct *wq;
5254 unsigned long flags;
5255 struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next;
5256 struct mpi3mr_hba_port *port, *hba_port_next;
5257 struct mpi3mr_sas_node *sas_expander, *sas_expander_next;
5258
5259 if (!shost)
5260 return;
5261
5262 mrioc = shost_priv(shost);
5263 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
5264 ssleep(1);
5265
5266 if (!pci_device_is_present(mrioc->pdev)) {
5267 mrioc->unrecoverable = 1;
5268 mpi3mr_flush_cmds_for_unrecovered_controller(mrioc);
5269 }
5270
5271 mpi3mr_bsg_exit(mrioc);
5272 mrioc->stop_drv_processing = 1;
5273 mpi3mr_cleanup_fwevt_list(mrioc);
5274 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
5275 wq = mrioc->fwevt_worker_thread;
5276 mrioc->fwevt_worker_thread = NULL;
5277 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
5278 if (wq)
5279 destroy_workqueue(wq);
5280
5281 if (mrioc->sas_transport_enabled)
5282 sas_remove_host(shost);
5283 else
5284 scsi_remove_host(shost);
5285
5286 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list,
5287 list) {
5288 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev);
5289 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev, true);
5290 mpi3mr_tgtdev_put(tgtdev);
5291 }
5292 mpi3mr_stop_watchdog(mrioc);
5293 mpi3mr_cleanup_ioc(mrioc);
5294 mpi3mr_free_mem(mrioc);
5295 mpi3mr_cleanup_resources(mrioc);
5296
5297 spin_lock_irqsave(&mrioc->sas_node_lock, flags);
5298 list_for_each_entry_safe_reverse(sas_expander, sas_expander_next,
5299 &mrioc->sas_expander_list, list) {
5300 spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
5301 mpi3mr_expander_node_remove(mrioc, sas_expander);
5302 spin_lock_irqsave(&mrioc->sas_node_lock, flags);
5303 }
5304 list_for_each_entry_safe(port, hba_port_next, &mrioc->hba_port_table_list, list) {
5305 ioc_info(mrioc,
5306 "removing hba_port entry: %p port: %d from hba_port list\n",
5307 port, port->port_id);
5308 list_del(&port->list);
5309 kfree(port);
5310 }
5311 spin_unlock_irqrestore(&mrioc->sas_node_lock, flags);
5312
5313 if (mrioc->sas_hba.num_phys) {
5314 kfree(mrioc->sas_hba.phy);
5315 mrioc->sas_hba.phy = NULL;
5316 mrioc->sas_hba.num_phys = 0;
5317 }
5318
5319 ida_free(&mrioc_ida, mrioc->id);
5320 spin_lock(&mrioc_list_lock);
5321 list_del(&mrioc->list);
5322 spin_unlock(&mrioc_list_lock);
5323
5324 scsi_host_put(shost);
5325}
5326
5327/**
5328 * mpi3mr_shutdown - PCI shutdown callback
5329 * @pdev: PCI device instance
5330 *
5331 * Free up all memory and resources associated with the
5332 * controller
5333 *
5334 * Return: Nothing.
5335 */
5336static void mpi3mr_shutdown(struct pci_dev *pdev)
5337{
5338 struct Scsi_Host *shost = pci_get_drvdata(pdev);
5339 struct mpi3mr_ioc *mrioc;
5340 struct workqueue_struct *wq;
5341 unsigned long flags;
5342
5343 if (!shost)
5344 return;
5345
5346 mrioc = shost_priv(shost);
5347 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
5348 ssleep(1);
5349
5350 mrioc->stop_drv_processing = 1;
5351 mpi3mr_cleanup_fwevt_list(mrioc);
5352 spin_lock_irqsave(&mrioc->fwevt_lock, flags);
5353 wq = mrioc->fwevt_worker_thread;
5354 mrioc->fwevt_worker_thread = NULL;
5355 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags);
5356 if (wq)
5357 destroy_workqueue(wq);
5358
5359 mpi3mr_stop_watchdog(mrioc);
5360 mpi3mr_cleanup_ioc(mrioc);
5361 mpi3mr_cleanup_resources(mrioc);
5362}
5363
5364/**
5365 * mpi3mr_suspend - PCI power management suspend callback
5366 * @dev: Device struct
5367 *
5368 * Change the power state to the given value and cleanup the IOC
5369 * by issuing MUR and shutdown notification
5370 *
5371 * Return: 0 always.
5372 */
5373static int __maybe_unused
5374mpi3mr_suspend(struct device *dev)
5375{
5376 struct pci_dev *pdev = to_pci_dev(dev);
5377 struct Scsi_Host *shost = pci_get_drvdata(pdev);
5378 struct mpi3mr_ioc *mrioc;
5379
5380 if (!shost)
5381 return 0;
5382
5383 mrioc = shost_priv(shost);
5384 while (mrioc->reset_in_progress || mrioc->is_driver_loading)
5385 ssleep(1);
5386 mrioc->stop_drv_processing = 1;
5387 mpi3mr_cleanup_fwevt_list(mrioc);
5388 scsi_block_requests(shost);
5389 mpi3mr_stop_watchdog(mrioc);
5390 mpi3mr_cleanup_ioc(mrioc);
5391
5392 ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state\n",
5393 pdev, pci_name(pdev));
5394 mpi3mr_cleanup_resources(mrioc);
5395
5396 return 0;
5397}
5398
5399/**
5400 * mpi3mr_resume - PCI power management resume callback
5401 * @dev: Device struct
5402 *
5403 * Restore the power state to D0 and reinitialize the controller
5404 * and resume I/O operations to the target devices
5405 *
5406 * Return: 0 on success, non-zero on failure
5407 */
5408static int __maybe_unused
5409mpi3mr_resume(struct device *dev)
5410{
5411 struct pci_dev *pdev = to_pci_dev(dev);
5412 struct Scsi_Host *shost = pci_get_drvdata(pdev);
5413 struct mpi3mr_ioc *mrioc;
5414 pci_power_t device_state = pdev->current_state;
5415 int r;
5416
5417 if (!shost)
5418 return 0;
5419
5420 mrioc = shost_priv(shost);
5421
5422 ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n",
5423 pdev, pci_name(pdev), device_state);
5424 mrioc->pdev = pdev;
5425 mrioc->cpu_count = num_online_cpus();
5426 r = mpi3mr_setup_resources(mrioc);
5427 if (r) {
5428 ioc_info(mrioc, "%s: Setup resources failed[%d]\n",
5429 __func__, r);
5430 return r;
5431 }
5432
5433 mrioc->stop_drv_processing = 0;
5434 mpi3mr_invalidate_devhandles(mrioc);
5435 mpi3mr_free_enclosure_list(mrioc);
5436 mpi3mr_memset_buffers(mrioc);
5437 r = mpi3mr_reinit_ioc(mrioc, 1);
5438 if (r) {
5439 ioc_err(mrioc, "resuming controller failed[%d]\n", r);
5440 return r;
5441 }
5442 ssleep(MPI3MR_RESET_TOPOLOGY_SETTLE_TIME);
5443 scsi_unblock_requests(shost);
5444 mrioc->device_refresh_on = 0;
5445 mpi3mr_start_watchdog(mrioc);
5446
5447 return 0;
5448}
5449
5450static const struct pci_device_id mpi3mr_pci_id_table[] = {
5451 {
5452 PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM,
5453 MPI3_MFGPAGE_DEVID_SAS4116, PCI_ANY_ID, PCI_ANY_ID)
5454 },
5455 {
5456 PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM,
5457 MPI3_MFGPAGE_DEVID_SAS5116_MPI, PCI_ANY_ID, PCI_ANY_ID)
5458 },
5459 {
5460 PCI_DEVICE_SUB(MPI3_MFGPAGE_VENDORID_BROADCOM,
5461 MPI3_MFGPAGE_DEVID_SAS5116_MPI_MGMT, PCI_ANY_ID, PCI_ANY_ID)
5462 },
5463 { 0 }
5464};
5465MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table);
5466
5467static SIMPLE_DEV_PM_OPS(mpi3mr_pm_ops, mpi3mr_suspend, mpi3mr_resume);
5468
5469static struct pci_driver mpi3mr_pci_driver = {
5470 .name = MPI3MR_DRIVER_NAME,
5471 .id_table = mpi3mr_pci_id_table,
5472 .probe = mpi3mr_probe,
5473 .remove = mpi3mr_remove,
5474 .shutdown = mpi3mr_shutdown,
5475 .driver.pm = &mpi3mr_pm_ops,
5476};
5477
5478static ssize_t event_counter_show(struct device_driver *dd, char *buf)
5479{
5480 return sprintf(buf, "%llu\n", atomic64_read(&event_counter));
5481}
5482static DRIVER_ATTR_RO(event_counter);
5483
5484static int __init mpi3mr_init(void)
5485{
5486 int ret_val;
5487
5488 pr_info("Loading %s version %s\n", MPI3MR_DRIVER_NAME,
5489 MPI3MR_DRIVER_VERSION);
5490
5491 mpi3mr_transport_template =
5492 sas_attach_transport(&mpi3mr_transport_functions);
5493 if (!mpi3mr_transport_template) {
5494 pr_err("%s failed to load due to sas transport attach failure\n",
5495 MPI3MR_DRIVER_NAME);
5496 return -ENODEV;
5497 }
5498
5499 ret_val = pci_register_driver(&mpi3mr_pci_driver);
5500 if (ret_val) {
5501 pr_err("%s failed to load due to pci register driver failure\n",
5502 MPI3MR_DRIVER_NAME);
5503 goto err_pci_reg_fail;
5504 }
5505
5506 ret_val = driver_create_file(&mpi3mr_pci_driver.driver,
5507 &driver_attr_event_counter);
5508 if (ret_val)
5509 goto err_event_counter;
5510
5511 return ret_val;
5512
5513err_event_counter:
5514 pci_unregister_driver(&mpi3mr_pci_driver);
5515
5516err_pci_reg_fail:
5517 sas_release_transport(mpi3mr_transport_template);
5518 return ret_val;
5519}
5520
5521static void __exit mpi3mr_exit(void)
5522{
5523 if (warn_non_secure_ctlr)
5524 pr_warn(
5525 "Unloading %s version %s while managing a non secure controller\n",
5526 MPI3MR_DRIVER_NAME, MPI3MR_DRIVER_VERSION);
5527 else
5528 pr_info("Unloading %s version %s\n", MPI3MR_DRIVER_NAME,
5529 MPI3MR_DRIVER_VERSION);
5530
5531 driver_remove_file(&mpi3mr_pci_driver.driver,
5532 &driver_attr_event_counter);
5533 pci_unregister_driver(&mpi3mr_pci_driver);
5534 sas_release_transport(mpi3mr_transport_template);
5535 ida_destroy(&mrioc_ida);
5536}
5537
5538module_init(mpi3mr_init);
5539module_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);