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 */
14	LIST_HEAD(mrioc_list);
15	DEFINE_SPINLOCK(mrioc_list_lock);
16	static DEFINE_IDA(mrioc_ida);
17	static int warn_non_secure_ctlr;
18	atomic64_t event_counter;
19
20	MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR);
21	MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC);
22	MODULE_LICENSE(MPI3MR_DRIVER_LICENSE);
23	MODULE_VERSION(MPI3MR_DRIVER_VERSION);
24
25	/* Module parameters*/
26	int prot_mask = -1;
27	module_param(prot_mask, int, 0);
28	MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07");
29
30	static int prot_guard_mask = 3;
31	module_param(prot_guard_mask, int, 0);
32	MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3");
33	static int logging_level;
34	module_param(logging_level, int, 0);
35	MODULE_PARM_DESC(logging_level,
36	" bits for enabling additional logging info (default=0)");
37	static int max_sgl_entries = MPI3MR_DEFAULT_SGL_ENTRIES;
38	module_param(max_sgl_entries, int, 0444);
39	MODULE_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*/
45	static 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	*/
61	static 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(rq: 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(cmd: 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	*/
101	static 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(shost: mrioc->shost, tag: unique_tag);
114	if (scmd) {
115	priv = scsi_cmd_priv(cmd: scmd);
116	if (!priv->in_lld_scope)
117	scmd = NULL;
118	}
119	out:
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	*/
133	static 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(cmd: 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(nr: priv->chain_idx, addr: mrioc->chain_bitmap);
149	priv->chain_idx = -1;
150	}
151	if (priv->meta_chain_idx >= 0) {
152	clear_bit(nr: priv->meta_chain_idx, addr: mrioc->chain_bitmap);
153	priv->meta_chain_idx = -1;
154	}
155	}
156
157	static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle,
158	struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc);
159	static 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	*/
167	static 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	*/
178	static void mpi3mr_fwevt_get(struct mpi3mr_fwevt *fwevt)
179	{
180	kref_get(kref: &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	*/
189	static void mpi3mr_fwevt_put(struct mpi3mr_fwevt *fwevt)
190	{
191	kref_put(kref: &fwevt->ref_count, release: 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	*/
203	static struct mpi3mr_fwevt *mpi3mr_alloc_fwevt(int len)
204	{
205	struct mpi3mr_fwevt *fwevt;
206
207	fwevt = kzalloc(size: sizeof(*fwevt) + len, GFP_ATOMIC);
208	if (!fwevt)
209	return NULL;
210
211	kref_init(kref: &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	*/
224	static 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(list: &fwevt->list);
236	list_add_tail(new: &fwevt->list, head: &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(wq: mrioc->fwevt_worker_thread, work: &fwevt->work);
241	spin_unlock_irqrestore(lock: &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	*/
253	static 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(head: &fwevt->list)) {
260	list_del_init(entry: &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(lock: &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	*/
278	static 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(head: &mrioc->fwevt_list)) {
286	fwevt = list_first_entry(&mrioc->fwevt_list,
287	struct mpi3mr_fwevt, list);
288	list_del_init(entry: &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(lock: &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	*/
306	static 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(work: &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	*/
338	void mpi3mr_cleanup_fwevt_list(struct mpi3mr_ioc *mrioc)
339	{
340	struct mpi3mr_fwevt *fwevt = NULL;
341
342	if ((list_empty(head: &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	*/
379	static 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(len: 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	*/
421	void 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(v: &tgt_priv->block_io, i: 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	*/
450	static 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(cmd: 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
466	out:
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
481	static 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(cmd: 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(cmd: scmd);
497	scmd->result = DID_RESET << 16;
498	scsi_print_command(scmd);
499	scsi_done(cmd: scmd);
500	mrioc->flush_io_count++;
501	}
502
503	out:
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
520	static 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(cmd: scmd);
529	if (!priv->in_lld_scope)
530	goto out;
531	if (scmd->device == sdev)
532	sdev_priv_data->pend_count++;
533	}
534
535	out:
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
552	static 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(cmd: scmd);
561	if (!priv->in_lld_scope)
562	goto out;
563	if (scmd->device && (scsi_target(sdev: scmd->device) == starget))
564	stgt_priv_data->pend_count++;
565	}
566
567	out:
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	*/
581	void 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(tagset: &shost->tag_set,
588	fn: mpi3mr_flush_scmd, priv: (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	*/
604	void 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(v: &mrioc->op_reply_qinfo[i].in_use))
615	udelay(500);
616	atomic_set(v: &mrioc->op_reply_qinfo[i].pend_ios, i: 0);
617	}
618	}
619	mrioc->flush_io_count = 0;
620	blk_mq_tagset_busy_iter(tagset: &shost->tag_set,
621	fn: mpi3mr_flush_scmd, priv: (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	*/
634	static struct mpi3mr_tgt_dev *mpi3mr_alloc_tgtdev(void)
635	{
636	struct mpi3mr_tgt_dev *tgtdev;
637
638	tgtdev = kzalloc(size: sizeof(*tgtdev), GFP_ATOMIC);
639	if (!tgtdev)
640	return NULL;
641	kref_init(kref: &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	*/
654	static 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(s: tgtdev);
661	INIT_LIST_HEAD(list: &tgtdev->list);
662	list_add_tail(new: &tgtdev->list, head: &mrioc->tgtdev_list);
663	tgtdev->state = MPI3MR_DEV_CREATED;
664	spin_unlock_irqrestore(lock: &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	*/
678	static 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(head: &tgtdev->list)) {
686	list_del_init(entry: &tgtdev->list);
687	tgtdev->state = MPI3MR_DEV_DELETED;
688	mpi3mr_tgtdev_put(s: tgtdev);
689	}
690	}
691	spin_unlock_irqrestore(lock: &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	*/
704	static 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
715	found_tgtdev:
716	mpi3mr_tgtdev_get(s: 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	*/
730	struct 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(lock: &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	*/
752	static 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
763	found_tgtdev:
764	mpi3mr_tgtdev_get(s: 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	*/
778	static 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(lock: &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	*/
800	static 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(s: 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	*/
823	static 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(lock: &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	*/
850	void 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	*/
870	void 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(v: &tgt_priv->block_io, i: 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	device_add: 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	*/
917	static 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, persist_id: 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(parent: &mrioc->shost->shost_gendev,
941	channel: mrioc->scsi_device_channel, id: tgtdev->perst_id,
942	SCAN_WILD_CARD, rescan: 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, device_add: true);
949	goto out;
950	}
951	}
952	} else
953	mpi3mr_report_tgtdev_to_sas_transport(mrioc, tgtdev);
954	out:
955	if (tgtdev)
956	mpi3mr_tgtdev_put(s: 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	*/
970	static 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(dev: &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	*/
1000	static void
1001	mpi3mr_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, q_depth: 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
1042	void 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(v: &tgt_priv->block_io, i: 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, must_delete: true);
1068	mpi3mr_tgtdev_put(s: 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	perst_id: tgtdev->perst_id);
1083	else if (tgtdev->starget)
1084	starget_for_each_device(tgtdev->starget,
1085	(void *)tgtdev, fn: 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	*/
1102	static 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	handle: 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(v: &scsi_tgt_priv_data->block_io, i: 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(shost: mrioc->shost);
1239	if (prot_mask & SHOST_DIX_TYPE0_PROTECTION) {
1240	scsi_host_set_prot(shost: mrioc->shost, mask: 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	*/
1297	static 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, handle: 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, perst_id: 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, must_delete: false);
1341	mpi3mr_tgtdev_put(s: tgtdev);
1342	}
1343
1344	out:
1345	if (tgtdev)
1346	mpi3mr_tgtdev_put(s: 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	*/
1361	static 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, handle: dev_handle);
1373	if (!tgtdev)
1374	goto out;
1375	mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, is_added: 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	fn: mpi3mr_update_sdev);
1383	out:
1384	if (tgtdev)
1385	mpi3mr_tgtdev_put(s: 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	*/
1396	void 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(entry: &enclosure_dev->list);
1403	kfree(objp: 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	*/
1417	struct 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	}
1428	out:
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	*/
1440	static 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	*/
1477	static 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, is_added: 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	handle: encl_handle);
1497	if (!enclosure_dev && present) {
1498	enclosure_dev =
1499	kzalloc(size: sizeof(struct mpi3mr_enclosure_node),
1500	GFP_KERNEL);
1501	if (!enclosure_dev)
1502	return;
1503	list_add_tail(new: &enclosure_dev->list,
1504	head: &mrioc->enclosure_list);
1505	}
1506	if (enclosure_dev) {
1507	if (!present) {
1508	list_del(entry: &enclosure_dev->list);
1509	kfree(objp: 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	*/
1526	static void
1527	mpi3mr_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	*/
1608	static 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	port_id: 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(lock: &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, must_delete: false);
1659	mpi3mr_tgtdev_put(s: 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, sas_address_parent: parent_sas_address, handle,
1676	phy_number: parent_phy_number, link_rate, hba_port);
1677	break;
1678	}
1679	default:
1680	break;
1681	}
1682	if (tgtdev)
1683	mpi3mr_tgtdev_put(s: 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, sas_address: 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	*/
1703	static void
1704	mpi3mr_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	*/
1787	static 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, must_delete: false);
1817	mpi3mr_tgtdev_put(s: tgtdev);
1818	break;
1819	default:
1820	break;
1821	}
1822	if (tgtdev)
1823	mpi3mr_tgtdev_put(s: 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	*/
1837	static void mpi3mr_logdata_evt_bh(struct mpi3mr_ioc *mrioc,
1838	struct mpi3mr_fwevt *fwevt)
1839	{
1840	mpi3mr_app_save_logdata(mrioc, event_data: fwevt->event_data,
1841	event_data_size: 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	*/
1854	static 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	*/
1872	static 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	fn: mpi3mr_update_sdev_qd);
1892	}
1893	}
1894	}
1895	spin_unlock_irqrestore(lock: &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	*/
1908	static 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(device_info: 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(msecs: 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
2022	evt_ack:
2023	if (fwevt->send_ack)
2024	mpi3mr_process_event_ack(mrioc, event: fwevt->event_id,
2025	event_ctx: fwevt->evt_ctx);
2026	out:
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	*/
2040	static 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(mrioc: 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	*/
2064	static 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, persist_id: perst_id);
2078	if (tgtdev)
2079	tgtdev->state = MPI3MR_DEV_CREATED;
2080	spin_unlock_irqrestore(lock: &mrioc->tgtdev_lock, flags);
2081
2082	if (tgtdev) {
2083	mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, is_added: true);
2084	mpi3mr_tgtdev_put(s: tgtdev);
2085	} else {
2086	tgtdev = mpi3mr_alloc_tgtdev();
2087	if (!tgtdev)
2088	return -ENOMEM;
2089	mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0, is_added: 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	*/
2105	void 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(head: &mrioc->delayed_rmhs_list)) {
2112	_rmhs_node = list_entry(mrioc->delayed_rmhs_list.next,
2113	struct delayed_dev_rmhs_node, list);
2114	list_del(entry: &_rmhs_node->list);
2115	kfree(objp: _rmhs_node);
2116	}
2117	dprint_reset(mrioc, "flushing delayed event ack commands\n");
2118	while (!list_empty(head: &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(entry: &_evtack_node->list);
2122	kfree(objp: _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	*/
2137	static 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, handle: drv_cmd->dev_handle,
2158	cmdparam: drv_cmd, iou_rc: 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(nr: drv_cmd->dev_handle, addr: mrioc->removepend_bitmap);
2169	}
2170
2171	if (!list_empty(head: &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, handle: drv_cmd->dev_handle, cmdparam: drv_cmd,
2181	iou_rc: drv_cmd->iou_rc);
2182	list_del(entry: &delayed_dev_rmhs->list);
2183	kfree(objp: delayed_dev_rmhs);
2184	return;
2185	}
2186
2187	clear_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(nr: cmd_idx, addr: 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	*/
2206	static 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, admin_req: &iou_ctrl, admin_req_sz: sizeof(iou_ctrl),
2241	ignore_reset: 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;
2249	clear_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(nr: cmd_idx, addr: 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	*/
2270	static 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(lock: &mrioc->tgtdev_lock, flags);
2287
2288	if (drv_cmd)
2289	goto issue_cmd;
2290	do {
2291	cmd_idx = find_first_zero_bit(addr: mrioc->devrem_bitmap,
2292	MPI3MR_NUM_DEVRMCMD);
2293	if (cmd_idx < MPI3MR_NUM_DEVRMCMD) {
2294	if (!test_and_set_bit(nr: cmd_idx, addr: 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(size: sizeof(*delayed_dev_rmhs),
2302	GFP_ATOMIC);
2303	if (!delayed_dev_rmhs)
2304	return;
2305	INIT_LIST_HEAD(list: &delayed_dev_rmhs->list);
2306	delayed_dev_rmhs->handle = handle;
2307	delayed_dev_rmhs->iou_rc = iou_rc;
2308	list_add_tail(new: &delayed_dev_rmhs->list,
2309	head: &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
2316	issue_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(nr: handle, addr: mrioc->removepend_bitmap);
2339	retval = mpi3mr_admin_request_post(mrioc, admin_req: &tm_req, admin_req_sz: sizeof(tm_req), ignore_reset: 1);
2340	if (retval) {
2341	ioc_err(mrioc, "%s :Issue DevRmHsTM: Admin Post failed\n",
2342	__func__);
2343	goto out_failed;
2344	}
2345	out:
2346	return;
2347	out_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(nr: cmd_idx, addr: 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	*/
2366	static 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(head: &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, event: delayed_evtack->event, cmdparam: drv_cmd,
2387	event_ctx: delayed_evtack->event_ctx);
2388	list_del(entry: &delayed_evtack->list);
2389	kfree(objp: delayed_evtack);
2390	return;
2391	}
2392	clear_drv_cmd:
2393	drv_cmd->state = MPI3MR_CMD_NOTUSED;
2394	drv_cmd->callback = NULL;
2395	clear_bit(nr: cmd_idx, addr: 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	*/
2412	static 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(addr: mrioc->evtack_cmds_bitmap,
2433	MPI3MR_NUM_EVTACKCMD);
2434	if (cmd_idx < MPI3MR_NUM_EVTACKCMD) {
2435	if (!test_and_set_bit(nr: cmd_idx,
2436	addr: 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(size: sizeof(*delayed_evtack),
2444	GFP_ATOMIC);
2445	if (!delayed_evtack)
2446	return;
2447	INIT_LIST_HEAD(list: &delayed_evtack->list);
2448	delayed_evtack->event = event;
2449	delayed_evtack->event_ctx = event_ctx;
2450	list_add_tail(new: &delayed_evtack->list,
2451	head: &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
2459	issue_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, admin_req: &evtack_req,
2476	admin_req_sz: sizeof(evtack_req), ignore_reset: 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);
2486	out:
2487	return;
2488	out_failed:
2489	drv_cmd->state = MPI3MR_CMD_NOTUSED;
2490	drv_cmd->callback = NULL;
2491	clear_bit(nr: cmd_idx, addr: 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	*/
2506	static 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(v: &scsi_tgt_priv_data->block_io, i: 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(v: &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	(v: &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(s: 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	*/
2572	static 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(v: &scsi_tgt_priv_data->block_io, i: 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(v: &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	(v: &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(s: 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	*/
2639	static 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, handle: 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(v: &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(v: &scsi_tgt_priv_data->block_io);
2689	}
2690	if (remove)
2691	mpi3mr_dev_rmhs_send_tm(mrioc, handle: dev_handle, NULL,
2692	MPI3_CTRL_OP_REMOVE_DEVICE);
2693	if (hide)
2694	mpi3mr_dev_rmhs_send_tm(mrioc, handle: dev_handle, NULL,
2695	MPI3_CTRL_OP_HIDDEN_ACK);
2696
2697	out:
2698	if (tgtdev)
2699	mpi3mr_tgtdev_put(s: 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	*/
2711	static 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: 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	*/
2745	static 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	*/
2774	static 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	*/
2810	void mpi3mr_add_event_wait_for_device_refresh(struct mpi3mr_ioc *mrioc)
2811	{
2812	struct mpi3mr_fwevt *fwevt = NULL;
2813
2814	fwevt = mpi3mr_alloc_fwevt(len: 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	*/
2841	void 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(len: 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	*/
2953	static 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	*/
3055	static 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	*/
3083	static 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(desc: 0, buf: scmd->sense_buffer, ILLEGAL_REQUEST,
3104	asc: 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	*/
3122	void 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	phys_addr: *reply_dma);
3163	if (!scsi_reply) {
3164	panic(fmt: "%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(fmt: "%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(fmt: "%s: Cannot Identify scmd for host_tag 0x%x\n",
3196	mrioc->name, host_tag);
3197	goto out;
3198	}
3199	priv = scsi_cmd_priv(cmd: scmd);
3200
3201	data_len_blks = scsi_bufflen(cmd: 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(i: data_len_blks,
3215	v: &mrioc->pend_large_data_sz);
3216	if (tg) {
3217	tg_pend_data_len = atomic_sub_return(i: data_len_blks,
3218	v: &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, divert_value: 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(v: &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(v: &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, divert_value: 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(cmd: scmd, resid: scsi_bufflen(cmd: 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(cmd: scmd, resid: 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_buffer: sense_buf, sb_len: sense_count, sshdr: &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	}
3354	out_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(cmd: scmd);
3361	scsi_done(cmd: scmd);
3362	out:
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	*/
3376	static 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(addr: mrioc->chain_bitmap,
3385	size: mrioc->chain_buf_count);
3386	if (cmd_idx < mrioc->chain_buf_count) {
3387	set_bit(nr: cmd_idx, addr: mrioc->chain_bitmap);
3388	break;
3389	}
3390	cmd_idx = -1;
3391	} while (retry_count--);
3392	spin_unlock_irqrestore(lock: &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	*/
3408	static 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(cmd: 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(paddr: sg_local);
3441	return 0;
3442	}
3443
3444	if (meta_sg) {
3445	sg_scmd = scsi_prot_sglist(cmd: 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(cmd: scmd);
3453	sges_left = scsi_dma_map(cmd: 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(paddr: sg_local, flags: 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(paddr: sg_local, flags: last_chain_sgl_flags,
3516	length: chain_length, dma_addr: chain_dma);
3517
3518	sg_local = chain;
3519
3520	fill_in_last_segment:
3521	while (sges_left > 0) {
3522	if (sges_left == 1)
3523	mpi3mr_add_sg_single(paddr: sg_local,
3524	flags: simple_sgl_flags_last, sg_dma_len(sg_scmd),
3525	sg_dma_address(sg_scmd));
3526	else
3527	mpi3mr_add_sg_single(paddr: sg_local, flags: 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	*/
3549	static 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	*/
3577	static 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
3617	inline 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	op_reply_q: 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	*/
3647	int 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(lock: &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(lock: &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(v: &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(x: &drv_cmd->done);
3719	retval = mpi3mr_admin_request_post(mrioc, admin_req: &tm_req, admin_req_sz: sizeof(tm_req), ignore_reset: 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(x: &drv_cmd->done, timeout: (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(req: &tm_req, sz: sizeof(tm_req)/4);
3735	mpi3mr_soft_reset_handler(mrioc,
3736	reset_reason: MPI3MR_RESET_FROM_TM_TIMEOUT, snapdump: 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(tagset: &mrioc->shost->tag_set,
3797	fn: mpi3mr_count_tgt_pending,
3798	priv: (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(tagset: &mrioc->shost->tag_set,
3805	fn: mpi3mr_count_dev_pending, priv: (void *)sdev);
3806	break;
3807	default:
3808	break;
3809	}
3810
3811	out_unlock:
3812	drv_cmd->state = MPI3MR_CMD_NOTUSED;
3813	mutex_unlock(lock: &drv_cmd->mutex);
3814	if (scsi_tgt_priv_data)
3815	atomic_dec_if_positive(v: &scsi_tgt_priv_data->block_io);
3816	if (tgtdev)
3817	mpi3mr_tgtdev_put(s: tgtdev);
3818	out:
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	*/
3833	static 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	*/
3870	static 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(qmap: map, pdev: mrioc->pdev, offset);
3900	else
3901	blk_mq_map_queues(qmap: 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	*/
3916	static 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(v: &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	*/
3935	static 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(tagset: &shost->tag_set,
3942	fn: mpi3mr_print_scmd, priv: (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	*/
3954	void 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(msecs: 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	*/
3996	static 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(p: 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(p: 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	*/
4032	static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd)
4033	{
4034	struct mpi3mr_ioc *mrioc = shost_priv(shost: scmd->device->host);
4035	int retval = FAILED, ret;
4036
4037	ret = mpi3mr_soft_reset_handler(mrioc,
4038	reset_reason: MPI3MR_RESET_FROM_EH_HOS, snapdump: 1);
4039	if (ret)
4040	goto out;
4041
4042	retval = SUCCESS;
4043	out:
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	*/
4060	static int mpi3mr_eh_bus_reset(struct scsi_cmnd *scmd)
4061	{
4062	struct mpi3mr_ioc *mrioc = shost_priv(shost: 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	*/
4099	static int mpi3mr_eh_target_reset(struct scsi_cmnd *scmd)
4100	{
4101	struct mpi3mr_ioc *mrioc = shost_priv(shost: 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(cmd: 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, handle: dev_handle,
4139	lun: sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
4140	MPI3MR_RESETTM_TIMEOUT, drv_cmd: &mrioc->host_tm_cmds, resp_code: &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;
4153	out:
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	*/
4171	static int mpi3mr_eh_dev_reset(struct scsi_cmnd *scmd)
4172	{
4173	struct mpi3mr_ioc *mrioc = shost_priv(shost: 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(cmd: 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, handle: dev_handle,
4210	lun: sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS,
4211	MPI3MR_RESETTM_TIMEOUT, drv_cmd: &mrioc->host_tm_cmds, resp_code: &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;
4223	out:
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	*/
4239	static 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, async: 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	*/
4263	static 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(addr: &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	reason_code: 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	*/
4316	static 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(dev: &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, persist_id: 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	sas_address: 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(s: tgt_dev);
4349	spin_unlock_irqrestore(lock: &mrioc->tgtdev_lock, flags);
4350
4351	kfree(objp: 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	*/
4363	static 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(dev: &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, tgt_priv: 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(s: tgt_dev);
4387	mpi3mr_tgtdev_put(s: tgt_dev);
4388	}
4389	spin_unlock_irqrestore(lock: &mrioc->tgtdev_lock, flags);
4390
4391	kfree(objp: 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	*/
4404	static 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(dev: &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, persist_id: 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	sas_address: rphy->identify.sas_address, rphy);
4425	}
4426	spin_unlock_irqrestore(lock: &mrioc->tgtdev_lock, flags);
4427	if (!tgt_dev)
4428	return -ENXIO;
4429
4430	mpi3mr_change_queue_depth(sdev, q_depth: 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(s: 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	*/
4468	static 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(dev: &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, persist_id: 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	sas_address: 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(s: tgt_dev);
4499	retval = 0;
4500	} else {
4501	spin_unlock_irqrestore(lock: &mrioc->tgtdev_lock, flags);
4502	return -ENXIO;
4503	}
4504
4505	spin_unlock_irqrestore(lock: &mrioc->tgtdev_lock, flags);
4506
4507	scsi_dev_priv_data = kzalloc(size: 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	*/
4528	static int mpi3mr_target_alloc(struct scsi_target *starget)
4529	{
4530	struct Scsi_Host *shost = dev_to_shost(dev: &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(size: 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, persist_id: 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(v: &scsi_tgt_priv_data->block_io, i: 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	sas_address: 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(v: &scsi_tgt_priv_data->block_io, i: 0);
4585	retval = 0;
4586	} else
4587	retval = -ENXIO;
4588	}
4589	spin_unlock_irqrestore(lock: &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	*/
4606	static 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(p: 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(val: trunc_param_len, p: 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(cmd: 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(desc: 0, buf: scmd->sense_buffer, ILLEGAL_REQUEST,
4644	asc: 0x1A, ascq: 0);
4645	scsi_done(cmd: scmd);
4646	return true;
4647	}
4648	if (param_len != scsi_bufflen(cmd: 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(desc: 0, buf: scmd->sense_buffer, ILLEGAL_REQUEST,
4655	asc: 0x1A, ascq: 0);
4656	scsi_done(cmd: scmd);
4657	return true;
4658	}
4659	buf = kzalloc(size: scsi_bufflen(cmd: scmd), GFP_ATOMIC);
4660	if (!buf) {
4661	scsi_print_command(scmd);
4662	scmd->result = SAM_STAT_CHECK_CONDITION;
4663	scsi_build_sense_buffer(desc: 0, buf: scmd->sense_buffer, ILLEGAL_REQUEST,
4664	asc: 0x55, ascq: 0x03);
4665	scsi_done(cmd: scmd);
4666	return true;
4667	}
4668	scsi_sg_copy_to_buffer(cmd: scmd, buf, buflen: scsi_bufflen(cmd: scmd));
4669	desc_len = get_unaligned_be16(p: &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(desc: 0, buf: scmd->sense_buffer, ILLEGAL_REQUEST,
4678	asc: 0x26, ascq: 0);
4679	scsi_done(cmd: scmd);
4680	kfree(objp: 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(val: trunc_param_len, p: scmd->cmnd + 7);
4691	scsi_print_command(scmd);
4692	}
4693
4694	kfree(objp: 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
4707	inline 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	*/
4730	static 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(cmd: 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(cmd: 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(cmd: 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, desc: 0, UNIT_ATTENTION, asc: 0x29, ascq: 0x07);
4779	scsi_done(cmd: 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(v: &stgt_priv_data->block_io)) {
4789	if (mrioc->stop_drv_processing) {
4790	scmd->result = DID_NO_CONNECT << 16;
4791	scsi_done(cmd: 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(cmd: scmd);
4801	goto out;
4802	}
4803	if (stgt_priv_data->dev_removed) {
4804	scmd->result = DID_NO_CONNECT << 16;
4805	scsi_done(cmd: 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(cmd: 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(cmd: 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: &scsiio_flags,
4851	wslen: 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(cmd: 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(i: data_len_blks,
4873	v: &mrioc->pend_large_data_sz);
4874	tg_pend_data_len = atomic_add_return(i: data_len_blks,
4875	v: &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, divert_value: 1);
4883	mpi3mr_queue_qd_reduction_event(mrioc, tg);
4884	}
4885	} else {
4886	ioc_pend_data_len = atomic_add_return(i: data_len_blks,
4887	v: &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, opreqq: op_req_q,
4901	req: 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(i: tracked_io_sz, v: &mrioc->pend_large_data_sz);
4906	if (tg)
4907	atomic_sub(i: tracked_io_sz,
4908	v: &tg->pend_large_data_sz);
4909	}
4910	goto out;
4911	}
4912
4913	out:
4914	return retval;
4915	}
4916
4917	static 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	*/
4962	static 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	*/
4981	static int
4982	osintfc_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(dev: 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(dev: pdev, where: base + 4, val: &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
5056	static int
5057	mpi3mr_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, min: 1, U8_MAX, GFP_KERNEL);
5077	if (retval < 0)
5078	goto id_alloc_failed;
5079	mrioc->id = (u8)retval;
5080	sprintf(buf: mrioc->driver_name, fmt: "%s", MPI3MR_DRIVER_NAME);
5081	sprintf(buf: mrioc->name, fmt: "%s%d", mrioc->driver_name, mrioc->id);
5082	INIT_LIST_HEAD(list: &mrioc->list);
5083	spin_lock(lock: &mrioc_list_lock);
5084	list_add_tail(new: &mrioc->list, head: &mrioc_list);
5085	spin_unlock(lock: &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(list: &mrioc->fwevt_list);
5097	INIT_LIST_HEAD(list: &mrioc->tgtdev_list);
5098	INIT_LIST_HEAD(list: &mrioc->delayed_rmhs_list);
5099	INIT_LIST_HEAD(list: &mrioc->delayed_evtack_cmds_list);
5100	INIT_LIST_HEAD(list: &mrioc->sas_expander_list);
5101	INIT_LIST_HEAD(list: &mrioc->hba_port_table_list);
5102	INIT_LIST_HEAD(list: &mrioc->enclosure_list);
5103
5104	mutex_init(&mrioc->reset_mutex);
5105	mpi3mr_init_drv_cmd(cmdptr: &mrioc->init_cmds, MPI3MR_HOSTTAG_INITCMDS);
5106	mpi3mr_init_drv_cmd(cmdptr: &mrioc->host_tm_cmds, MPI3MR_HOSTTAG_BLK_TMS);
5107	mpi3mr_init_drv_cmd(cmdptr: &mrioc->bsg_cmds, MPI3MR_HOSTTAG_BSG_CMDS);
5108	mpi3mr_init_drv_cmd(cmdptr: &mrioc->cfg_cmds, MPI3MR_HOSTTAG_CFG_CMDS);
5109	mpi3mr_init_drv_cmd(cmdptr: &mrioc->transport_cmds,
5110	MPI3MR_HOSTTAG_TRANSPORT_CMDS);
5111
5112	for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++)
5113	mpi3mr_init_drv_cmd(cmdptr: &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(cmdptr: &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, mask: 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, mask: 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, type: (prot_guard_mask & 3));
5174	else
5175	scsi_host_set_guard(shost, type: SHOST_DIX_GUARD_CRC);
5176
5177	snprintf(buf: mrioc->fwevt_worker_name, size: sizeof(mrioc->fwevt_worker_name),
5178	fmt: "%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(host: shost, dev: &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
5220	addhost_failed:
5221	mpi3mr_stop_watchdog(mrioc);
5222	mpi3mr_cleanup_ioc(mrioc);
5223	init_ioc_failed:
5224	mpi3mr_free_mem(mrioc);
5225	mpi3mr_cleanup_resources(mrioc);
5226	resource_alloc_failed:
5227	destroy_workqueue(wq: mrioc->fwevt_worker_thread);
5228	fwevtthread_failed:
5229	ida_free(&mrioc_ida, id: mrioc->id);
5230	spin_lock(lock: &mrioc_list_lock);
5231	list_del(entry: &mrioc->list);
5232	spin_unlock(lock: &mrioc_list_lock);
5233	id_alloc_failed:
5234	scsi_host_put(t: shost);
5235	shost_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	*/
5249	static 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(seconds: 1);
5265
5266	if (!pci_device_is_present(pdev: 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(lock: &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, must_delete: true);
5290	mpi3mr_tgtdev_put(s: 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(lock: &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(entry: &port->list);
5309	kfree(objp: port);
5310	}
5311	spin_unlock_irqrestore(lock: &mrioc->sas_node_lock, flags);
5312
5313	if (mrioc->sas_hba.num_phys) {
5314	kfree(objp: mrioc->sas_hba.phy);
5315	mrioc->sas_hba.phy = NULL;
5316	mrioc->sas_hba.num_phys = 0;
5317	}
5318
5319	ida_free(&mrioc_ida, id: mrioc->id);
5320	spin_lock(lock: &mrioc_list_lock);
5321	list_del(entry: &mrioc->list);
5322	spin_unlock(lock: &mrioc_list_lock);
5323
5324	scsi_host_put(t: 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	*/
5336	static 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(seconds: 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(lock: &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	*/
5373	static int __maybe_unused
5374	mpi3mr_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(seconds: 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	*/
5408	static int __maybe_unused
5409	mpi3mr_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, is_resume: 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
5450	static 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	};
5465	MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table);
5466
5467	static SIMPLE_DEV_PM_OPS(mpi3mr_pm_ops, mpi3mr_suspend, mpi3mr_resume);
5468
5469	static 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
5478	static ssize_t event_counter_show(struct device_driver *dd, char *buf)
5479	{
5480	return sprintf(buf, fmt: "%llu\n", atomic64_read(v: &event_counter));
5481	}
5482	static DRIVER_ATTR_RO(event_counter);
5483
5484	static 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(driver: &mpi3mr_pci_driver.driver,
5507	attr: &driver_attr_event_counter);
5508	if (ret_val)
5509	goto err_event_counter;
5510
5511	return ret_val;
5512
5513	err_event_counter:
5514	pci_unregister_driver(dev: &mpi3mr_pci_driver);
5515
5516	err_pci_reg_fail:
5517	sas_release_transport(mpi3mr_transport_template);
5518	return ret_val;
5519	}
5520
5521	static 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(driver: &mpi3mr_pci_driver.driver,
5532	attr: &driver_attr_event_counter);
5533	pci_unregister_driver(dev: &mpi3mr_pci_driver);
5534	sas_release_transport(mpi3mr_transport_template);
5535	ida_destroy(ida: &mrioc_ida);
5536	}
5537
5538	module_init(mpi3mr_init);
5539	module_exit(mpi3mr_exit);
5540