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scsi: smartpqi: wake up drives after os resumes from suspend
[linux-2.6-block.git] / drivers / scsi / smartpqi / smartpqi_init.c
CommitLineData
6c223761
KB		 1/*
2 * driver for Microsemi PQI-based storage controllers
b805dbfe 3 * Copyright (c) 2016-2017 Microsemi Corporation
6c223761
KB		 4 * Copyright (c) 2016 PMC-Sierra, Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 *
15 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
16 *
17 */
18
19#include <linux/module.h>
20#include <linux/kernel.h>
21#include <linux/pci.h>
22#include <linux/delay.h>
23#include <linux/interrupt.h>
24#include <linux/sched.h>
25#include <linux/rtc.h>
26#include <linux/bcd.h>
3c50976f 27#include <linux/reboot.h>
6c223761 28#include <linux/cciss_ioctl.h>
52198226 29#include <linux/blk-mq-pci.h>
6c223761
KB		 30#include <scsi/scsi_host.h>
31#include <scsi/scsi_cmnd.h>
32#include <scsi/scsi_device.h>
33#include <scsi/scsi_eh.h>
34#include <scsi/scsi_transport_sas.h>
35#include <asm/unaligned.h>
36#include "smartpqi.h"
37#include "smartpqi_sis.h"
38
39#if !defined(BUILD_TIMESTAMP)
40#define BUILD_TIMESTAMP
41#endif
42
4ae5e9d1 43#define DRIVER_VERSION "1.1.4-130"
2d154f5f 44#define DRIVER_MAJOR 1
b98117ca 45#define DRIVER_MINOR 1
61c187e4 46#define DRIVER_RELEASE 4
4ae5e9d1 47#define DRIVER_REVISION 130
6c223761 48
2d154f5f
KB		 49#define DRIVER_NAME "Microsemi PQI Driver (v" \
50 DRIVER_VERSION BUILD_TIMESTAMP ")"
6c223761
KB		 51#define DRIVER_NAME_SHORT "smartpqi"
52
e1d213bd
KB		 53#define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor))
54
6c223761
KB		 55MODULE_AUTHOR("Microsemi");
56MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version "
57 DRIVER_VERSION);
58MODULE_SUPPORTED_DEVICE("Microsemi Smart Family Controllers");
59MODULE_VERSION(DRIVER_VERSION);
60MODULE_LICENSE("GPL");
61
6c223761 62static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info);
5f310425 63static void pqi_ctrl_offline_worker(struct work_struct *work);
376fb880 64static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info);
6c223761
KB		 65static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
66static void pqi_scan_start(struct Scsi_Host *shost);
67static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
68 struct pqi_queue_group *queue_group, enum pqi_io_path path,
69 struct pqi_io_request *io_request);
70static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
71 struct pqi_iu_header *request, unsigned int flags,
72 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs);
73static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
74 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
75 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 76 struct pqi_encryption_info *encryption_info, bool raid_bypass);
6c223761
KB		 77
78/* for flags argument to pqi_submit_raid_request_synchronous() */
79#define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
80
81static struct scsi_transport_template *pqi_sas_transport_template;
82
83static atomic_t pqi_controller_count = ATOMIC_INIT(0);
84
3c50976f
KB		 85enum pqi_lockup_action {
86 NONE,
87 REBOOT,
88 PANIC
89};
90
91static enum pqi_lockup_action pqi_lockup_action = NONE;
92
93static struct {
94 enum pqi_lockup_action action;
95 char *name;
96} pqi_lockup_actions[] = {
97 {
98 .action = NONE,
99 .name = "none",
100 },
101 {
102 .action = REBOOT,
103 .name = "reboot",
104 },
105 {
106 .action = PANIC,
107 .name = "panic",
108 },
109};
110
6a50d6ad
KB		 111static unsigned int pqi_supported_event_types[] = {
112 PQI_EVENT_TYPE_HOTPLUG,
113 PQI_EVENT_TYPE_HARDWARE,
114 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
115 PQI_EVENT_TYPE_LOGICAL_DEVICE,
116 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
117 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
118};
119
6c223761
KB		 120static int pqi_disable_device_id_wildcards;
121module_param_named(disable_device_id_wildcards,
cbe0c7b1 122 pqi_disable_device_id_wildcards, int, 0644);
6c223761
KB		 123MODULE_PARM_DESC(disable_device_id_wildcards,
124 "Disable device ID wildcards.");
125
5a259e32
KB		 126static int pqi_disable_heartbeat;
127module_param_named(disable_heartbeat,
128 pqi_disable_heartbeat, int, 0644);
129MODULE_PARM_DESC(disable_heartbeat,
130 "Disable heartbeat.");
131
132static int pqi_disable_ctrl_shutdown;
133module_param_named(disable_ctrl_shutdown,
134 pqi_disable_ctrl_shutdown, int, 0644);
135MODULE_PARM_DESC(disable_ctrl_shutdown,
136 "Disable controller shutdown when controller locked up.");
137
3c50976f
KB		 138static char *pqi_lockup_action_param;
139module_param_named(lockup_action,
140 pqi_lockup_action_param, charp, 0644);
141MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
142 "\t\tSupported: none, reboot, panic\n"
143 "\t\tDefault: none");
144
6c223761
KB		 145static char *raid_levels[] = {
146 "RAID-0",
147 "RAID-4",
148 "RAID-1(1+0)",
149 "RAID-5",
150 "RAID-5+1",
151 "RAID-ADG",
152 "RAID-1(ADM)",
153};
154
155static char *pqi_raid_level_to_string(u8 raid_level)
156{
157 if (raid_level < ARRAY_SIZE(raid_levels))
158 return raid_levels[raid_level];
159
a9f93392 160 return "RAID UNKNOWN";
6c223761
KB		 161}
162
163#define SA_RAID_0 0
164#define SA_RAID_4 1
165#define SA_RAID_1 2 /* also used for RAID 10 */
166#define SA_RAID_5 3 /* also used for RAID 50 */
167#define SA_RAID_51 4
168#define SA_RAID_6 5 /* also used for RAID 60 */
169#define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
170#define SA_RAID_MAX SA_RAID_ADM
171#define SA_RAID_UNKNOWN 0xff
172
173static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
174{
7561a7e4 175 pqi_prep_for_scsi_done(scmd);
6c223761
KB		 176 scmd->scsi_done(scmd);
177}
178
b6e2ef67
DC		 179static inline void pqi_disable_write_same(struct scsi_device *sdev)
180{
181 sdev->no_write_same = 1;
182}
183
6c223761
KB		 184static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
185{
186 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
187}
188
189static inline struct pqi_ctrl_info *shost_to_hba(struct Scsi_Host *shost)
190{
191 void *hostdata = shost_priv(shost);
192
193 return *((struct pqi_ctrl_info **)hostdata);
194}
195
196static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
197{
198 return !device->is_physical_device;
199}
200
bd10cf0b
KB		 201static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
202{
203 return scsi3addr[2] != 0;
204}
205
6c223761
KB		 206static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
207{
208 return !ctrl_info->controller_online;
209}
210
211static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
212{
213 if (ctrl_info->controller_online)
214 if (!sis_is_firmware_running(ctrl_info))
215 pqi_take_ctrl_offline(ctrl_info);
216}
217
218static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
219{
220 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
221}
222
ff6abb73
KB		 223static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
224 struct pqi_ctrl_info *ctrl_info)
225{
226 return sis_read_driver_scratch(ctrl_info);
227}
228
229static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
230 enum pqi_ctrl_mode mode)
231{
232 sis_write_driver_scratch(ctrl_info, mode);
233}
234
7561a7e4
KB		 235static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
236{
237 ctrl_info->block_requests = true;
238 scsi_block_requests(ctrl_info->scsi_host);
239}
240
241static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
242{
243 ctrl_info->block_requests = false;
244 wake_up_all(&ctrl_info->block_requests_wait);
376fb880 245 pqi_retry_raid_bypass_requests(ctrl_info);
7561a7e4
KB		 246 scsi_unblock_requests(ctrl_info->scsi_host);
247}
248
249static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
250{
251 return ctrl_info->block_requests;
252}
253
254static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
255 unsigned long timeout_msecs)
256{
257 unsigned long remaining_msecs;
258
259 if (!pqi_ctrl_blocked(ctrl_info))
260 return timeout_msecs;
261
262 atomic_inc(&ctrl_info->num_blocked_threads);
263
264 if (timeout_msecs == NO_TIMEOUT) {
265 wait_event(ctrl_info->block_requests_wait,
266 !pqi_ctrl_blocked(ctrl_info));
267 remaining_msecs = timeout_msecs;
268 } else {
269 unsigned long remaining_jiffies;
270
271 remaining_jiffies =
272 wait_event_timeout(ctrl_info->block_requests_wait,
273 !pqi_ctrl_blocked(ctrl_info),
274 msecs_to_jiffies(timeout_msecs));
275 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
276 }
277
278 atomic_dec(&ctrl_info->num_blocked_threads);
279
280 return remaining_msecs;
281}
282
283static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info)
284{
285 atomic_inc(&ctrl_info->num_busy_threads);
286}
287
288static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info)
289{
290 atomic_dec(&ctrl_info->num_busy_threads);
291}
292
293static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
294{
295 while (atomic_read(&ctrl_info->num_busy_threads) >
296 atomic_read(&ctrl_info->num_blocked_threads))
297 usleep_range(1000, 2000);
298}
299
03b288cf
KB		 300static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
301{
302 return device->device_offline;
303}
304
7561a7e4
KB		 305static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
306{
307 device->in_reset = true;
308}
309
310static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
311{
312 device->in_reset = false;
313}
314
315static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
316{
317 return device->in_reset;
318}
6c223761 319
5f310425
KB		 320static inline void pqi_schedule_rescan_worker_with_delay(
321 struct pqi_ctrl_info *ctrl_info, unsigned long delay)
322{
323 if (pqi_ctrl_offline(ctrl_info))
324 return;
325
326 schedule_delayed_work(&ctrl_info->rescan_work, delay);
327}
328
6c223761
KB		 329static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
330{
5f310425
KB		 331 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
332}
333
334#define PQI_RESCAN_WORK_DELAY (10 * HZ)
335
336static inline void pqi_schedule_rescan_worker_delayed(
337 struct pqi_ctrl_info *ctrl_info)
338{
339 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
6c223761
KB		 340}
341
061ef06a
KB		 342static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
343{
344 cancel_delayed_work_sync(&ctrl_info->rescan_work);
345}
346
98f87667
KB		 347static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
348{
349 if (!ctrl_info->heartbeat_counter)
350 return 0;
351
352 return readl(ctrl_info->heartbeat_counter);
353}
354
6c223761
KB		 355static int pqi_map_single(struct pci_dev *pci_dev,
356 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
6917a9cc 357 size_t buffer_length, enum dma_data_direction data_direction)
6c223761
KB		 358{
359 dma_addr_t bus_address;
360
6917a9cc 361 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE)
6c223761
KB		 362 return 0;
363
6917a9cc 364 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length,
6c223761 365 data_direction);
6917a9cc 366 if (dma_mapping_error(&pci_dev->dev, bus_address))
6c223761
KB		 367 return -ENOMEM;
368
369 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
370 put_unaligned_le32(buffer_length, &sg_descriptor->length);
371 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
372
373 return 0;
374}
375
376static void pqi_pci_unmap(struct pci_dev *pci_dev,
377 struct pqi_sg_descriptor *descriptors, int num_descriptors,
6917a9cc 378 enum dma_data_direction data_direction)
6c223761
KB		 379{
380 int i;
381
6917a9cc 382 if (data_direction == DMA_NONE)
6c223761
KB		 383 return;
384
385 for (i = 0; i < num_descriptors; i++)
6917a9cc 386 dma_unmap_single(&pci_dev->dev,
6c223761
KB		 387 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
388 get_unaligned_le32(&descriptors[i].length),
389 data_direction);
390}
391
392static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
393 struct pqi_raid_path_request *request, u8 cmd,
394 u8 *scsi3addr, void *buffer, size_t buffer_length,
6917a9cc 395 u16 vpd_page, enum dma_data_direction *dir)
6c223761
KB		 396{
397 u8 *cdb;
171c2865 398 size_t cdb_length = buffer_length;
6c223761
KB		 399
400 memset(request, 0, sizeof(*request));
401
402 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
403 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
404 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
405 &request->header.iu_length);
406 put_unaligned_le32(buffer_length, &request->buffer_length);
407 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
408 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
409 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
410
411 cdb = request->cdb;
412
413 switch (cmd) {
414 case INQUIRY:
415 request->data_direction = SOP_READ_FLAG;
416 cdb[0] = INQUIRY;
417 if (vpd_page & VPD_PAGE) {
418 cdb[1] = 0x1;
419 cdb[2] = (u8)vpd_page;
420 }
171c2865 421 cdb[4] = (u8)cdb_length;
6c223761
KB		 422 break;
423 case CISS_REPORT_LOG:
424 case CISS_REPORT_PHYS:
425 request->data_direction = SOP_READ_FLAG;
426 cdb[0] = cmd;
427 if (cmd == CISS_REPORT_PHYS)
428 cdb[1] = CISS_REPORT_PHYS_EXTENDED;
429 else
430 cdb[1] = CISS_REPORT_LOG_EXTENDED;
171c2865 431 put_unaligned_be32(cdb_length, &cdb[6]);
6c223761
KB		 432 break;
433 case CISS_GET_RAID_MAP:
434 request->data_direction = SOP_READ_FLAG;
435 cdb[0] = CISS_READ;
436 cdb[1] = CISS_GET_RAID_MAP;
171c2865 437 put_unaligned_be32(cdb_length, &cdb[6]);
6c223761 438 break;
58322fe0 439 case SA_FLUSH_CACHE:
6c223761
KB		 440 request->data_direction = SOP_WRITE_FLAG;
441 cdb[0] = BMIC_WRITE;
58322fe0 442 cdb[6] = BMIC_FLUSH_CACHE;
171c2865 443 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 444 break;
171c2865
DC		 445 case BMIC_SENSE_DIAG_OPTIONS:
446 cdb_length = 0;
6c223761
KB		 447 case BMIC_IDENTIFY_CONTROLLER:
448 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
449 request->data_direction = SOP_READ_FLAG;
450 cdb[0] = BMIC_READ;
451 cdb[6] = cmd;
171c2865 452 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 453 break;
171c2865
DC		 454 case BMIC_SET_DIAG_OPTIONS:
455 cdb_length = 0;
6c223761
KB		 456 case BMIC_WRITE_HOST_WELLNESS:
457 request->data_direction = SOP_WRITE_FLAG;
458 cdb[0] = BMIC_WRITE;
459 cdb[6] = cmd;
171c2865 460 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761
KB		 461 break;
462 default:
463 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n",
464 cmd);
6c223761
KB		 465 break;
466 }
467
468 switch (request->data_direction) {
469 case SOP_READ_FLAG:
6917a9cc 470 *dir = DMA_FROM_DEVICE;
6c223761
KB		 471 break;
472 case SOP_WRITE_FLAG:
6917a9cc 473 *dir = DMA_TO_DEVICE;
6c223761
KB		 474 break;
475 case SOP_NO_DIRECTION_FLAG:
6917a9cc 476 *dir = DMA_NONE;
6c223761
KB		 477 break;
478 default:
6917a9cc 479 *dir = DMA_BIDIRECTIONAL;
6c223761
KB		 480 break;
481 }
482
6c223761 483 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
6917a9cc 484 buffer, buffer_length, *dir);
6c223761
KB		 485}
486
376fb880
KB		 487static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
488{
489 io_request->scmd = NULL;
490 io_request->status = 0;
491 io_request->error_info = NULL;
492 io_request->raid_bypass = false;
493}
494
6c223761
KB		 495static struct pqi_io_request *pqi_alloc_io_request(
496 struct pqi_ctrl_info *ctrl_info)
497{
498 struct pqi_io_request *io_request;
499 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
500
501 while (1) {
502 io_request = &ctrl_info->io_request_pool[i];
503 if (atomic_inc_return(&io_request->refcount) == 1)
504 break;
505 atomic_dec(&io_request->refcount);
506 i = (i + 1) % ctrl_info->max_io_slots;
507 }
508
509 /* benignly racy */
510 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
511
376fb880 512 pqi_reinit_io_request(io_request);
6c223761
KB		 513
514 return io_request;
515}
516
517static void pqi_free_io_request(struct pqi_io_request *io_request)
518{
519 atomic_dec(&io_request->refcount);
520}
521
02133b68
DC		 522static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
523 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
524 struct pqi_raid_error_info *error_info,
525 unsigned long timeout_msecs)
6c223761
KB		 526{
527 int rc;
6917a9cc 528 enum dma_data_direction dir;
6c223761
KB		 529 struct pqi_raid_path_request request;
530
531 rc = pqi_build_raid_path_request(ctrl_info, &request,
02133b68
DC		 532 cmd, scsi3addr, buffer,
533 buffer_length, vpd_page, &dir);
6c223761
KB		 534 if (rc)
535 return rc;
536
02133b68
DC		 537 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
538 0, error_info, timeout_msecs);
6c223761 539
6917a9cc 540 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
6c223761
KB		 541 return rc;
542}
543
02133b68
DC		 544/* Helper functions for pqi_send_scsi_raid_request */
545
546static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
547 u8 cmd, void *buffer, size_t buffer_length)
6c223761 548{
02133b68
DC		 549 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
550 buffer, buffer_length, 0, NULL, NO_TIMEOUT);
551}
6c223761 552
02133b68
DC		 553static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
554 u8 cmd, void *buffer, size_t buffer_length,
555 struct pqi_raid_error_info *error_info)
556{
557 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
558 buffer, buffer_length, 0, error_info, NO_TIMEOUT);
559}
6c223761 560
6c223761 561
02133b68
DC		 562static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
563 struct bmic_identify_controller *buffer)
564{
565 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
566 buffer, sizeof(*buffer));
567}
568
569static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
570 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
571{
572 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
573 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT);
6c223761
KB		 574}
575
cd128244
DC		 576static bool pqi_vpd_page_supported(struct pqi_ctrl_info *ctrl_info,
577 u8 *scsi3addr, u16 vpd_page)
578{
579 int rc;
580 int i;
581 int pages;
582 unsigned char *buf, bufsize;
583
584 buf = kzalloc(256, GFP_KERNEL);
585 if (!buf)
586 return false;
587
588 /* Get the size of the page list first */
589 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
590 VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES,
591 buf, SCSI_VPD_HEADER_SZ);
592 if (rc != 0)
593 goto exit_unsupported;
594
595 pages = buf[3];
596 if ((pages + SCSI_VPD_HEADER_SZ) <= 255)
597 bufsize = pages + SCSI_VPD_HEADER_SZ;
598 else
599 bufsize = 255;
600
601 /* Get the whole VPD page list */
602 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
603 VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES,
604 buf, bufsize);
605 if (rc != 0)
606 goto exit_unsupported;
607
608 pages = buf[3];
609 for (i = 1; i <= pages; i++)
610 if (buf[3 + i] == vpd_page)
611 goto exit_supported;
612
613exit_unsupported:
614 kfree(buf);
615 return false;
616
617exit_supported:
618 kfree(buf);
619 return true;
620}
621
622static int pqi_get_device_id(struct pqi_ctrl_info *ctrl_info,
623 u8 *scsi3addr, u8 *device_id, int buflen)
624{
625 int rc;
626 unsigned char *buf;
627
628 if (!pqi_vpd_page_supported(ctrl_info, scsi3addr, SCSI_VPD_DEVICE_ID))
629 return 1; /* function not supported */
630
631 buf = kzalloc(64, GFP_KERNEL);
632 if (!buf)
633 return -ENOMEM;
634
635 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
636 VPD_PAGE | SCSI_VPD_DEVICE_ID,
637 buf, 64);
638 if (rc == 0) {
639 if (buflen > 16)
640 buflen = 16;
641 memcpy(device_id, &buf[SCSI_VPD_DEVICE_ID_IDX], buflen);
642 }
643
644 kfree(buf);
645
646 return rc;
647}
648
6c223761
KB		 649static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
650 struct pqi_scsi_dev *device,
651 struct bmic_identify_physical_device *buffer,
652 size_t buffer_length)
653{
654 int rc;
6917a9cc 655 enum dma_data_direction dir;
6c223761
KB		 656 u16 bmic_device_index;
657 struct pqi_raid_path_request request;
658
659 rc = pqi_build_raid_path_request(ctrl_info, &request,
660 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
6917a9cc 661 buffer_length, 0, &dir);
6c223761
KB		 662 if (rc)
663 return rc;
664
665 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
666 request.cdb[2] = (u8)bmic_device_index;
667 request.cdb[9] = (u8)(bmic_device_index >> 8);
668
669 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
670 0, NULL, NO_TIMEOUT);
671
6917a9cc 672 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
6c223761
KB		 673 return rc;
674}
675
58322fe0
KB		 676static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
677 enum bmic_flush_cache_shutdown_event shutdown_event)
6c223761
KB		 678{
679 int rc;
58322fe0 680 struct bmic_flush_cache *flush_cache;
6c223761
KB		 681
682 /*
683 * Don't bother trying to flush the cache if the controller is
684 * locked up.
685 */
686 if (pqi_ctrl_offline(ctrl_info))
687 return -ENXIO;
688
58322fe0
KB		 689 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
690 if (!flush_cache)
6c223761
KB		 691 return -ENOMEM;
692
58322fe0
KB		 693 flush_cache->shutdown_event = shutdown_event;
694
02133b68
DC		 695 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
696 sizeof(*flush_cache));
6c223761 697
58322fe0 698 kfree(flush_cache);
6c223761
KB		 699
700 return rc;
701}
702
171c2865
DC		 703
704#define PQI_FETCH_PTRAID_DATA (1UL<<31)
705
706static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
707{
708 int rc;
171c2865 709 struct bmic_diag_options *diag;
171c2865
DC		 710
711 diag = kzalloc(sizeof(*diag), GFP_KERNEL);
712 if (!diag)
713 return -ENOMEM;
714
02133b68
DC		 715 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
716 diag, sizeof(*diag));
171c2865
DC		 717 if (rc)
718 goto out;
719
720 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
721
02133b68
DC		 722 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS,
723 diag, sizeof(*diag));
171c2865
DC		 724out:
725 kfree(diag);
726
727 return rc;
728}
729
02133b68 730static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 731 void *buffer, size_t buffer_length)
732{
02133b68
DC		 733 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
734 buffer, buffer_length);
6c223761
KB		 735}
736
737#pragma pack(1)
738
739struct bmic_host_wellness_driver_version {
740 u8 start_tag[4];
741 u8 driver_version_tag[2];
742 __le16 driver_version_length;
743 char driver_version[32];
b2346b50 744 u8 dont_write_tag[2];
6c223761
KB		 745 u8 end_tag[2];
746};
747
748#pragma pack()
749
750static int pqi_write_driver_version_to_host_wellness(
751 struct pqi_ctrl_info *ctrl_info)
752{
753 int rc;
754 struct bmic_host_wellness_driver_version *buffer;
755 size_t buffer_length;
756
757 buffer_length = sizeof(*buffer);
758
759 buffer = kmalloc(buffer_length, GFP_KERNEL);
760 if (!buffer)
761 return -ENOMEM;
762
763 buffer->start_tag[0] = '<';
764 buffer->start_tag[1] = 'H';
765 buffer->start_tag[2] = 'W';
766 buffer->start_tag[3] = '>';
767 buffer->driver_version_tag[0] = 'D';
768 buffer->driver_version_tag[1] = 'V';
769 put_unaligned_le16(sizeof(buffer->driver_version),
770 &buffer->driver_version_length);
061ef06a 771 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
6c223761
KB		 772 sizeof(buffer->driver_version) - 1);
773 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
b2346b50
MR		 774 buffer->dont_write_tag[0] = 'D';
775 buffer->dont_write_tag[1] = 'W';
6c223761
KB		 776 buffer->end_tag[0] = 'Z';
777 buffer->end_tag[1] = 'Z';
778
779 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
780
781 kfree(buffer);
782
783 return rc;
784}
785
786#pragma pack(1)
787
788struct bmic_host_wellness_time {
789 u8 start_tag[4];
790 u8 time_tag[2];
791 __le16 time_length;
792 u8 time[8];
793 u8 dont_write_tag[2];
794 u8 end_tag[2];
795};
796
797#pragma pack()
798
799static int pqi_write_current_time_to_host_wellness(
800 struct pqi_ctrl_info *ctrl_info)
801{
802 int rc;
803 struct bmic_host_wellness_time *buffer;
804 size_t buffer_length;
805 time64_t local_time;
806 unsigned int year;
ed10858e 807 struct tm tm;
6c223761
KB		 808
809 buffer_length = sizeof(*buffer);
810
811 buffer = kmalloc(buffer_length, GFP_KERNEL);
812 if (!buffer)
813 return -ENOMEM;
814
815 buffer->start_tag[0] = '<';
816 buffer->start_tag[1] = 'H';
817 buffer->start_tag[2] = 'W';
818 buffer->start_tag[3] = '>';
819 buffer->time_tag[0] = 'T';
820 buffer->time_tag[1] = 'D';
821 put_unaligned_le16(sizeof(buffer->time),
822 &buffer->time_length);
823
ed10858e
AB		 824 local_time = ktime_get_real_seconds();
825 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
6c223761
KB		 826 year = tm.tm_year + 1900;
827
828 buffer->time[0] = bin2bcd(tm.tm_hour);
829 buffer->time[1] = bin2bcd(tm.tm_min);
830 buffer->time[2] = bin2bcd(tm.tm_sec);
831 buffer->time[3] = 0;
832 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
833 buffer->time[5] = bin2bcd(tm.tm_mday);
834 buffer->time[6] = bin2bcd(year / 100);
835 buffer->time[7] = bin2bcd(year % 100);
836
837 buffer->dont_write_tag[0] = 'D';
838 buffer->dont_write_tag[1] = 'W';
839 buffer->end_tag[0] = 'Z';
840 buffer->end_tag[1] = 'Z';
841
842 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
843
844 kfree(buffer);
845
846 return rc;
847}
848
849#define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * HZ)
850
851static void pqi_update_time_worker(struct work_struct *work)
852{
853 int rc;
854 struct pqi_ctrl_info *ctrl_info;
855
856 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
857 update_time_work);
858
5f310425
KB		 859 if (pqi_ctrl_offline(ctrl_info))
860 return;
861
6c223761
KB		 862 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
863 if (rc)
864 dev_warn(&ctrl_info->pci_dev->dev,
865 "error updating time on controller\n");
866
867 schedule_delayed_work(&ctrl_info->update_time_work,
868 PQI_UPDATE_TIME_WORK_INTERVAL);
869}
870
871static inline void pqi_schedule_update_time_worker(
4fbebf1a 872 struct pqi_ctrl_info *ctrl_info)
6c223761 873{
4fbebf1a 874 schedule_delayed_work(&ctrl_info->update_time_work, 0);
061ef06a
KB		 875}
876
877static inline void pqi_cancel_update_time_worker(
878 struct pqi_ctrl_info *ctrl_info)
879{
061ef06a 880 cancel_delayed_work_sync(&ctrl_info->update_time_work);
6c223761
KB		 881}
882
02133b68 883static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
6c223761
KB		 884 void *buffer, size_t buffer_length)
885{
02133b68
DC		 886 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer,
887 buffer_length);
6c223761
KB		 888}
889
890static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
891 void **buffer)
892{
893 int rc;
894 size_t lun_list_length;
895 size_t lun_data_length;
896 size_t new_lun_list_length;
897 void *lun_data = NULL;
898 struct report_lun_header *report_lun_header;
899
900 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
901 if (!report_lun_header) {
902 rc = -ENOMEM;
903 goto out;
904 }
905
906 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header,
907 sizeof(*report_lun_header));
908 if (rc)
909 goto out;
910
911 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
912
913again:
914 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
915
916 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
917 if (!lun_data) {
918 rc = -ENOMEM;
919 goto out;
920 }
921
922 if (lun_list_length == 0) {
923 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
924 goto out;
925 }
926
927 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
928 if (rc)
929 goto out;
930
931 new_lun_list_length = get_unaligned_be32(
932 &((struct report_lun_header *)lun_data)->list_length);
933
934 if (new_lun_list_length > lun_list_length) {
935 lun_list_length = new_lun_list_length;
936 kfree(lun_data);
937 goto again;
938 }
939
940out:
941 kfree(report_lun_header);
942
943 if (rc) {
944 kfree(lun_data);
945 lun_data = NULL;
946 }
947
948 *buffer = lun_data;
949
950 return rc;
951}
952
953static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info,
954 void **buffer)
955{
956 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS,
957 buffer);
958}
959
960static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info,
961 void **buffer)
962{
963 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
964}
965
966static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
967 struct report_phys_lun_extended **physdev_list,
968 struct report_log_lun_extended **logdev_list)
969{
970 int rc;
971 size_t logdev_list_length;
972 size_t logdev_data_length;
973 struct report_log_lun_extended *internal_logdev_list;
974 struct report_log_lun_extended *logdev_data;
975 struct report_lun_header report_lun_header;
976
977 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
978 if (rc)
979 dev_err(&ctrl_info->pci_dev->dev,
980 "report physical LUNs failed\n");
981
982 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
983 if (rc)
984 dev_err(&ctrl_info->pci_dev->dev,
985 "report logical LUNs failed\n");
986
987 /*
988 * Tack the controller itself onto the end of the logical device list.
989 */
990
991 logdev_data = *logdev_list;
992
993 if (logdev_data) {
994 logdev_list_length =
995 get_unaligned_be32(&logdev_data->header.list_length);
996 } else {
997 memset(&report_lun_header, 0, sizeof(report_lun_header));
998 logdev_data =
999 (struct report_log_lun_extended *)&report_lun_header;
1000 logdev_list_length = 0;
1001 }
1002
1003 logdev_data_length = sizeof(struct report_lun_header) +
1004 logdev_list_length;
1005
1006 internal_logdev_list = kmalloc(logdev_data_length +
1007 sizeof(struct report_log_lun_extended), GFP_KERNEL);
1008 if (!internal_logdev_list) {
1009 kfree(*logdev_list);
1010 *logdev_list = NULL;
1011 return -ENOMEM;
1012 }
1013
1014 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
1015 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
1016 sizeof(struct report_log_lun_extended_entry));
1017 put_unaligned_be32(logdev_list_length +
1018 sizeof(struct report_log_lun_extended_entry),
1019 &internal_logdev_list->header.list_length);
1020
1021 kfree(*logdev_list);
1022 *logdev_list = internal_logdev_list;
1023
1024 return 0;
1025}
1026
1027static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
1028 int bus, int target, int lun)
1029{
1030 device->bus = bus;
1031 device->target = target;
1032 device->lun = lun;
1033}
1034
1035static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
1036{
1037 u8 *scsi3addr;
1038 u32 lunid;
bd10cf0b
KB		 1039 int bus;
1040 int target;
1041 int lun;
6c223761
KB		 1042
1043 scsi3addr = device->scsi3addr;
1044 lunid = get_unaligned_le32(scsi3addr);
1045
1046 if (pqi_is_hba_lunid(scsi3addr)) {
1047 /* The specified device is the controller. */
1048 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
1049 device->target_lun_valid = true;
1050 return;
1051 }
1052
1053 if (pqi_is_logical_device(device)) {
bd10cf0b
KB		 1054 if (device->is_external_raid_device) {
1055 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
1056 target = (lunid >> 16) & 0x3fff;
1057 lun = lunid & 0xff;
1058 } else {
1059 bus = PQI_RAID_VOLUME_BUS;
1060 target = 0;
1061 lun = lunid & 0x3fff;
1062 }
1063 pqi_set_bus_target_lun(device, bus, target, lun);
6c223761
KB		 1064 device->target_lun_valid = true;
1065 return;
1066 }
1067
1068 /*
1069 * Defer target and LUN assignment for non-controller physical devices
1070 * because the SAS transport layer will make these assignments later.
1071 */
1072 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
1073}
1074
1075static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
1076 struct pqi_scsi_dev *device)
1077{
1078 int rc;
1079 u8 raid_level;
1080 u8 *buffer;
1081
1082 raid_level = SA_RAID_UNKNOWN;
1083
1084 buffer = kmalloc(64, GFP_KERNEL);
1085 if (buffer) {
1086 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1087 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1088 if (rc == 0) {
1089 raid_level = buffer[8];
1090 if (raid_level > SA_RAID_MAX)
1091 raid_level = SA_RAID_UNKNOWN;
1092 }
1093 kfree(buffer);
1094 }
1095
1096 device->raid_level = raid_level;
1097}
1098
1099static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1100 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1101{
1102 char *err_msg;
1103 u32 raid_map_size;
1104 u32 r5or6_blocks_per_row;
1105 unsigned int num_phys_disks;
1106 unsigned int num_raid_map_entries;
1107
1108 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1109
1110 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1111 err_msg = "RAID map too small";
1112 goto bad_raid_map;
1113 }
1114
1115 if (raid_map_size > sizeof(*raid_map)) {
1116 err_msg = "RAID map too large";
1117 goto bad_raid_map;
1118 }
1119
1120 num_phys_disks = get_unaligned_le16(&raid_map->layout_map_count) *
1121 (get_unaligned_le16(&raid_map->data_disks_per_row) +
1122 get_unaligned_le16(&raid_map->metadata_disks_per_row));
1123 num_raid_map_entries = num_phys_disks *
1124 get_unaligned_le16(&raid_map->row_cnt);
1125
1126 if (num_raid_map_entries > RAID_MAP_MAX_ENTRIES) {
1127 err_msg = "invalid number of map entries in RAID map";
1128 goto bad_raid_map;
1129 }
1130
1131 if (device->raid_level == SA_RAID_1) {
1132 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1133 err_msg = "invalid RAID-1 map";
1134 goto bad_raid_map;
1135 }
1136 } else if (device->raid_level == SA_RAID_ADM) {
1137 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1138 err_msg = "invalid RAID-1(ADM) map";
1139 goto bad_raid_map;
1140 }
1141 } else if ((device->raid_level == SA_RAID_5 ||
1142 device->raid_level == SA_RAID_6) &&
1143 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1144 /* RAID 50/60 */
1145 r5or6_blocks_per_row =
1146 get_unaligned_le16(&raid_map->strip_size) *
1147 get_unaligned_le16(&raid_map->data_disks_per_row);
1148 if (r5or6_blocks_per_row == 0) {
1149 err_msg = "invalid RAID-5 or RAID-6 map";
1150 goto bad_raid_map;
1151 }
1152 }
1153
1154 return 0;
1155
1156bad_raid_map:
d87d5474 1157 dev_warn(&ctrl_info->pci_dev->dev,
38a7338a
KB		 1158 "logical device %08x%08x %s\n",
1159 *((u32 *)&device->scsi3addr),
1160 *((u32 *)&device->scsi3addr[4]), err_msg);
6c223761
KB		 1161
1162 return -EINVAL;
1163}
1164
1165static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1166 struct pqi_scsi_dev *device)
1167{
1168 int rc;
6917a9cc 1169 enum dma_data_direction dir;
6c223761
KB		 1170 struct pqi_raid_path_request request;
1171 struct raid_map *raid_map;
1172
1173 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1174 if (!raid_map)
1175 return -ENOMEM;
1176
1177 rc = pqi_build_raid_path_request(ctrl_info, &request,
1178 CISS_GET_RAID_MAP, device->scsi3addr, raid_map,
6917a9cc 1179 sizeof(*raid_map), 0, &dir);
6c223761
KB		 1180 if (rc)
1181 goto error;
1182
1183 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
1184 NULL, NO_TIMEOUT);
1185
6917a9cc 1186 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
6c223761
KB		 1187
1188 if (rc)
1189 goto error;
1190
1191 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1192 if (rc)
1193 goto error;
1194
1195 device->raid_map = raid_map;
1196
1197 return 0;
1198
1199error:
1200 kfree(raid_map);
1201
1202 return rc;
1203}
1204
588a63fe 1205static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1206 struct pqi_scsi_dev *device)
1207{
1208 int rc;
1209 u8 *buffer;
588a63fe 1210 u8 bypass_status;
6c223761
KB		 1211
1212 buffer = kmalloc(64, GFP_KERNEL);
1213 if (!buffer)
1214 return;
1215
1216 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
588a63fe 1217 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
6c223761
KB		 1218 if (rc)
1219 goto out;
1220
588a63fe
KB		 1221#define RAID_BYPASS_STATUS 4
1222#define RAID_BYPASS_CONFIGURED 0x1
1223#define RAID_BYPASS_ENABLED 0x2
6c223761 1224
588a63fe
KB		 1225 bypass_status = buffer[RAID_BYPASS_STATUS];
1226 device->raid_bypass_configured =
1227 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1228 if (device->raid_bypass_configured &&
1229 (bypass_status & RAID_BYPASS_ENABLED) &&
1230 pqi_get_raid_map(ctrl_info, device) == 0)
1231 device->raid_bypass_enabled = true;
6c223761
KB		 1232
1233out:
1234 kfree(buffer);
1235}
1236
1237/*
1238 * Use vendor-specific VPD to determine online/offline status of a volume.
1239 */
1240
1241static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1242 struct pqi_scsi_dev *device)
1243{
1244 int rc;
1245 size_t page_length;
1246 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1247 bool volume_offline = true;
1248 u32 volume_flags;
1249 struct ciss_vpd_logical_volume_status *vpd;
1250
1251 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1252 if (!vpd)
1253 goto no_buffer;
1254
1255 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1256 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1257 if (rc)
1258 goto out;
1259
1260 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1261 volume_status) + vpd->page_length;
1262 if (page_length < sizeof(*vpd))
1263 goto out;
1264
1265 volume_status = vpd->volume_status;
1266 volume_flags = get_unaligned_be32(&vpd->flags);
1267 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1268
1269out:
1270 kfree(vpd);
1271no_buffer:
1272 device->volume_status = volume_status;
1273 device->volume_offline = volume_offline;
1274}
1275
26b390ab
KB		 1276#define PQI_INQUIRY_PAGE0_RETRIES 3
1277
6c223761
KB		 1278static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
1279 struct pqi_scsi_dev *device)
1280{
1281 int rc;
1282 u8 *buffer;
26b390ab 1283 unsigned int retries;
6c223761
KB		 1284
1285 buffer = kmalloc(64, GFP_KERNEL);
1286 if (!buffer)
1287 return -ENOMEM;
1288
1289 /* Send an inquiry to the device to see what it is. */
26b390ab
KB		 1290 for (retries = 0;;) {
1291 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0,
1292 buffer, 64);
1293 if (rc == 0)
1294 break;
1295 if (pqi_is_logical_device(device) ||
1296 rc != PQI_CMD_STATUS_ABORTED ||
1297 ++retries > PQI_INQUIRY_PAGE0_RETRIES)
1298 goto out;
1299 }
6c223761
KB		 1300
1301 scsi_sanitize_inquiry_string(&buffer[8], 8);
1302 scsi_sanitize_inquiry_string(&buffer[16], 16);
1303
1304 device->devtype = buffer[0] & 0x1f;
cbe0c7b1
KB		 1305 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1306 memcpy(device->model, &buffer[16], sizeof(device->model));
6c223761
KB		 1307
1308 if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK) {
bd10cf0b
KB		 1309 if (device->is_external_raid_device) {
1310 device->raid_level = SA_RAID_UNKNOWN;
1311 device->volume_status = CISS_LV_OK;
1312 device->volume_offline = false;
1313 } else {
1314 pqi_get_raid_level(ctrl_info, device);
588a63fe 1315 pqi_get_raid_bypass_status(ctrl_info, device);
bd10cf0b
KB		 1316 pqi_get_volume_status(ctrl_info, device);
1317 }
6c223761
KB		 1318 }
1319
cd128244
DC		 1320 if (pqi_get_device_id(ctrl_info, device->scsi3addr,
1321 device->unique_id, sizeof(device->unique_id)) < 0)
1322 dev_warn(&ctrl_info->pci_dev->dev,
1323 "Can't get device id for scsi %d:%d:%d:%d\n",
1324 ctrl_info->scsi_host->host_no,
1325 device->bus, device->target,
1326 device->lun);
1327
6c223761
KB		 1328out:
1329 kfree(buffer);
1330
1331 return rc;
1332}
1333
1334static void pqi_get_physical_disk_info(struct pqi_ctrl_info *ctrl_info,
1335 struct pqi_scsi_dev *device,
1336 struct bmic_identify_physical_device *id_phys)
1337{
1338 int rc;
1339
1340 memset(id_phys, 0, sizeof(*id_phys));
1341
1342 rc = pqi_identify_physical_device(ctrl_info, device,
1343 id_phys, sizeof(*id_phys));
1344 if (rc) {
1345 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1346 return;
1347 }
1348
1349 device->queue_depth =
1350 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1351 device->device_type = id_phys->device_type;
1352 device->active_path_index = id_phys->active_path_number;
1353 device->path_map = id_phys->redundant_path_present_map;
1354 memcpy(&device->box,
1355 &id_phys->alternate_paths_phys_box_on_port,
1356 sizeof(device->box));
1357 memcpy(&device->phys_connector,
1358 &id_phys->alternate_paths_phys_connector,
1359 sizeof(device->phys_connector));
1360 device->bay = id_phys->phys_bay_in_box;
1361}
1362
1363static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1364 struct pqi_scsi_dev *device)
1365{
1366 char *status;
1367 static const char unknown_state_str[] =
1368 "Volume is in an unknown state (%u)";
1369 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1370
1371 switch (device->volume_status) {
1372 case CISS_LV_OK:
1373 status = "Volume online";
1374 break;
1375 case CISS_LV_FAILED:
1376 status = "Volume failed";
1377 break;
1378 case CISS_LV_NOT_CONFIGURED:
1379 status = "Volume not configured";
1380 break;
1381 case CISS_LV_DEGRADED:
1382 status = "Volume degraded";
1383 break;
1384 case CISS_LV_READY_FOR_RECOVERY:
1385 status = "Volume ready for recovery operation";
1386 break;
1387 case CISS_LV_UNDERGOING_RECOVERY:
1388 status = "Volume undergoing recovery";
1389 break;
1390 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1391 status = "Wrong physical drive was replaced";
1392 break;
1393 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1394 status = "A physical drive not properly connected";
1395 break;
1396 case CISS_LV_HARDWARE_OVERHEATING:
1397 status = "Hardware is overheating";
1398 break;
1399 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1400 status = "Hardware has overheated";
1401 break;
1402 case CISS_LV_UNDERGOING_EXPANSION:
1403 status = "Volume undergoing expansion";
1404 break;
1405 case CISS_LV_NOT_AVAILABLE:
1406 status = "Volume waiting for transforming volume";
1407 break;
1408 case CISS_LV_QUEUED_FOR_EXPANSION:
1409 status = "Volume queued for expansion";
1410 break;
1411 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1412 status = "Volume disabled due to SCSI ID conflict";
1413 break;
1414 case CISS_LV_EJECTED:
1415 status = "Volume has been ejected";
1416 break;
1417 case CISS_LV_UNDERGOING_ERASE:
1418 status = "Volume undergoing background erase";
1419 break;
1420 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1421 status = "Volume ready for predictive spare rebuild";
1422 break;
1423 case CISS_LV_UNDERGOING_RPI:
1424 status = "Volume undergoing rapid parity initialization";
1425 break;
1426 case CISS_LV_PENDING_RPI:
1427 status = "Volume queued for rapid parity initialization";
1428 break;
1429 case CISS_LV_ENCRYPTED_NO_KEY:
1430 status = "Encrypted volume inaccessible - key not present";
1431 break;
1432 case CISS_LV_UNDERGOING_ENCRYPTION:
1433 status = "Volume undergoing encryption process";
1434 break;
1435 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1436 status = "Volume undergoing encryption re-keying process";
1437 break;
1438 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
d87d5474 1439 status = "Volume encrypted but encryption is disabled";
6c223761
KB		 1440 break;
1441 case CISS_LV_PENDING_ENCRYPTION:
1442 status = "Volume pending migration to encrypted state";
1443 break;
1444 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1445 status = "Volume pending encryption rekeying";
1446 break;
1447 case CISS_LV_NOT_SUPPORTED:
1448 status = "Volume not supported on this controller";
1449 break;
1450 case CISS_LV_STATUS_UNAVAILABLE:
1451 status = "Volume status not available";
1452 break;
1453 default:
1454 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1455 unknown_state_str, device->volume_status);
1456 status = unknown_state_buffer;
1457 break;
1458 }
1459
1460 dev_info(&ctrl_info->pci_dev->dev,
1461 "scsi %d:%d:%d:%d %s\n",
1462 ctrl_info->scsi_host->host_no,
1463 device->bus, device->target, device->lun, status);
1464}
1465
6c223761
KB		 1466static void pqi_rescan_worker(struct work_struct *work)
1467{
1468 struct pqi_ctrl_info *ctrl_info;
1469
1470 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1471 rescan_work);
1472
1473 pqi_scan_scsi_devices(ctrl_info);
1474}
1475
1476static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1477 struct pqi_scsi_dev *device)
1478{
1479 int rc;
1480
1481 if (pqi_is_logical_device(device))
1482 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1483 device->target, device->lun);
1484 else
1485 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1486
1487 return rc;
1488}
1489
1490static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info,
1491 struct pqi_scsi_dev *device)
1492{
1493 if (pqi_is_logical_device(device))
1494 scsi_remove_device(device->sdev);
1495 else
1496 pqi_remove_sas_device(device);
1497}
1498
1499/* Assumes the SCSI device list lock is held. */
1500
1501static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1502 int bus, int target, int lun)
1503{
1504 struct pqi_scsi_dev *device;
1505
1506 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1507 scsi_device_list_entry)
1508 if (device->bus == bus && device->target == target &&
1509 device->lun == lun)
1510 return device;
1511
1512 return NULL;
1513}
1514
1515static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1,
1516 struct pqi_scsi_dev *dev2)
1517{
1518 if (dev1->is_physical_device != dev2->is_physical_device)
1519 return false;
1520
1521 if (dev1->is_physical_device)
1522 return dev1->wwid == dev2->wwid;
1523
1524 return memcmp(dev1->volume_id, dev2->volume_id,
1525 sizeof(dev1->volume_id)) == 0;
1526}
1527
1528enum pqi_find_result {
1529 DEVICE_NOT_FOUND,
1530 DEVICE_CHANGED,
1531 DEVICE_SAME,
1532};
1533
1534static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
1535 struct pqi_scsi_dev *device_to_find,
1536 struct pqi_scsi_dev **matching_device)
1537{
1538 struct pqi_scsi_dev *device;
1539
1540 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1541 scsi_device_list_entry) {
1542 if (pqi_scsi3addr_equal(device_to_find->scsi3addr,
1543 device->scsi3addr)) {
1544 *matching_device = device;
1545 if (pqi_device_equal(device_to_find, device)) {
1546 if (device_to_find->volume_offline)
1547 return DEVICE_CHANGED;
1548 return DEVICE_SAME;
1549 }
1550 return DEVICE_CHANGED;
1551 }
1552 }
1553
1554 return DEVICE_NOT_FOUND;
1555}
1556
6de783f6
KB		 1557#define PQI_DEV_INFO_BUFFER_LENGTH 128
1558
6c223761
KB		 1559static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1560 char *action, struct pqi_scsi_dev *device)
1561{
6de783f6
KB		 1562 ssize_t count;
1563 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1564
1565 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1566 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1567
1568 if (device->target_lun_valid)
1569 count += snprintf(buffer + count,
1570 PQI_DEV_INFO_BUFFER_LENGTH - count,
1571 "%d:%d",
1572 device->target,
1573 device->lun);
1574 else
1575 count += snprintf(buffer + count,
1576 PQI_DEV_INFO_BUFFER_LENGTH - count,
1577 "-:-");
1578
1579 if (pqi_is_logical_device(device))
1580 count += snprintf(buffer + count,
1581 PQI_DEV_INFO_BUFFER_LENGTH - count,
1582 " %08x%08x",
1583 *((u32 *)&device->scsi3addr),
1584 *((u32 *)&device->scsi3addr[4]));
1585 else
1586 count += snprintf(buffer + count,
1587 PQI_DEV_INFO_BUFFER_LENGTH - count,
1588 " %016llx", device->sas_address);
1589
1590 count += snprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
1591 " %s %.8s %.16s ",
6c223761
KB		 1592 scsi_device_type(device->devtype),
1593 device->vendor,
6de783f6
KB		 1594 device->model);
1595
1596 if (pqi_is_logical_device(device)) {
1597 if (device->devtype == TYPE_DISK)
1598 count += snprintf(buffer + count,
1599 PQI_DEV_INFO_BUFFER_LENGTH - count,
1600 "SSDSmartPathCap%c En%c %-12s",
588a63fe
KB		 1601 device->raid_bypass_configured ? '+' : '-',
1602 device->raid_bypass_enabled ? '+' : '-',
6de783f6
KB		 1603 pqi_raid_level_to_string(device->raid_level));
1604 } else {
1605 count += snprintf(buffer + count,
1606 PQI_DEV_INFO_BUFFER_LENGTH - count,
1607 "AIO%c", device->aio_enabled ? '+' : '-');
1608 if (device->devtype == TYPE_DISK ||
1609 device->devtype == TYPE_ZBC)
1610 count += snprintf(buffer + count,
1611 PQI_DEV_INFO_BUFFER_LENGTH - count,
1612 " qd=%-6d", device->queue_depth);
1613 }
1614
1615 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
6c223761
KB		 1616}
1617
1618/* Assumes the SCSI device list lock is held. */
1619
1620static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1621 struct pqi_scsi_dev *new_device)
1622{
1623 existing_device->devtype = new_device->devtype;
1624 existing_device->device_type = new_device->device_type;
1625 existing_device->bus = new_device->bus;
1626 if (new_device->target_lun_valid) {
1627 existing_device->target = new_device->target;
1628 existing_device->lun = new_device->lun;
1629 existing_device->target_lun_valid = true;
1630 }
1631
1632 /* By definition, the scsi3addr and wwid fields are already the same. */
1633
1634 existing_device->is_physical_device = new_device->is_physical_device;
bd10cf0b
KB		 1635 existing_device->is_external_raid_device =
1636 new_device->is_external_raid_device;
6c223761
KB		 1637 existing_device->aio_enabled = new_device->aio_enabled;
1638 memcpy(existing_device->vendor, new_device->vendor,
1639 sizeof(existing_device->vendor));
1640 memcpy(existing_device->model, new_device->model,
1641 sizeof(existing_device->model));
1642 existing_device->sas_address = new_device->sas_address;
1643 existing_device->raid_level = new_device->raid_level;
1644 existing_device->queue_depth = new_device->queue_depth;
1645 existing_device->aio_handle = new_device->aio_handle;
1646 existing_device->volume_status = new_device->volume_status;
1647 existing_device->active_path_index = new_device->active_path_index;
1648 existing_device->path_map = new_device->path_map;
1649 existing_device->bay = new_device->bay;
1650 memcpy(existing_device->box, new_device->box,
1651 sizeof(existing_device->box));
1652 memcpy(existing_device->phys_connector, new_device->phys_connector,
1653 sizeof(existing_device->phys_connector));
6c223761
KB		 1654 existing_device->offload_to_mirror = 0;
1655 kfree(existing_device->raid_map);
1656 existing_device->raid_map = new_device->raid_map;
588a63fe
KB		 1657 existing_device->raid_bypass_configured =
1658 new_device->raid_bypass_configured;
1659 existing_device->raid_bypass_enabled =
1660 new_device->raid_bypass_enabled;
6c223761
KB		 1661
1662 /* To prevent this from being freed later. */
1663 new_device->raid_map = NULL;
1664}
1665
1666static inline void pqi_free_device(struct pqi_scsi_dev *device)
1667{
1668 if (device) {
1669 kfree(device->raid_map);
1670 kfree(device);
1671 }
1672}
1673
1674/*
1675 * Called when exposing a new device to the OS fails in order to re-adjust
1676 * our internal SCSI device list to match the SCSI ML's view.
1677 */
1678
1679static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1680 struct pqi_scsi_dev *device)
1681{
1682 unsigned long flags;
1683
1684 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1685 list_del(&device->scsi_device_list_entry);
1686 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1687
1688 /* Allow the device structure to be freed later. */
1689 device->keep_device = false;
1690}
1691
1692static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1693 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1694{
1695 int rc;
1696 unsigned int i;
1697 unsigned long flags;
1698 enum pqi_find_result find_result;
1699 struct pqi_scsi_dev *device;
1700 struct pqi_scsi_dev *next;
1701 struct pqi_scsi_dev *matching_device;
8a994a04
KB		 1702 LIST_HEAD(add_list);
1703 LIST_HEAD(delete_list);
6c223761
KB		 1704
1705 /*
1706 * The idea here is to do as little work as possible while holding the
1707 * spinlock. That's why we go to great pains to defer anything other
1708 * than updating the internal device list until after we release the
1709 * spinlock.
1710 */
1711
1712 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1713
1714 /* Assume that all devices in the existing list have gone away. */
1715 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1716 scsi_device_list_entry)
1717 device->device_gone = true;
1718
1719 for (i = 0; i < num_new_devices; i++) {
1720 device = new_device_list[i];
1721
1722 find_result = pqi_scsi_find_entry(ctrl_info, device,
1723 &matching_device);
1724
1725 switch (find_result) {
1726 case DEVICE_SAME:
1727 /*
1728 * The newly found device is already in the existing
1729 * device list.
1730 */
1731 device->new_device = false;
1732 matching_device->device_gone = false;
1733 pqi_scsi_update_device(matching_device, device);
1734 break;
1735 case DEVICE_NOT_FOUND:
1736 /*
1737 * The newly found device is NOT in the existing device
1738 * list.
1739 */
1740 device->new_device = true;
1741 break;
1742 case DEVICE_CHANGED:
1743 /*
1744 * The original device has gone away and we need to add
1745 * the new device.
1746 */
1747 device->new_device = true;
1748 break;
6c223761
KB		 1749 }
1750 }
1751
1752 /* Process all devices that have gone away. */
1753 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1754 scsi_device_list_entry) {
1755 if (device->device_gone) {
1756 list_del(&device->scsi_device_list_entry);
1757 list_add_tail(&device->delete_list_entry, &delete_list);
1758 }
1759 }
1760
1761 /* Process all new devices. */
1762 for (i = 0; i < num_new_devices; i++) {
1763 device = new_device_list[i];
1764 if (!device->new_device)
1765 continue;
1766 if (device->volume_offline)
1767 continue;
1768 list_add_tail(&device->scsi_device_list_entry,
1769 &ctrl_info->scsi_device_list);
1770 list_add_tail(&device->add_list_entry, &add_list);
1771 /* To prevent this device structure from being freed later. */
1772 device->keep_device = true;
1773 }
1774
6c223761
KB		 1775 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1776
1777 /* Remove all devices that have gone away. */
1778 list_for_each_entry_safe(device, next, &delete_list,
1779 delete_list_entry) {
6c223761
KB		 1780 if (device->volume_offline) {
1781 pqi_dev_info(ctrl_info, "offline", device);
1782 pqi_show_volume_status(ctrl_info, device);
1783 } else {
1784 pqi_dev_info(ctrl_info, "removed", device);
1785 }
6de783f6
KB		 1786 if (device->sdev)
1787 pqi_remove_device(ctrl_info, device);
6c223761
KB		 1788 list_del(&device->delete_list_entry);
1789 pqi_free_device(device);
1790 }
1791
1792 /*
1793 * Notify the SCSI ML if the queue depth of any existing device has
1794 * changed.
1795 */
1796 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1797 scsi_device_list_entry) {
1798 if (device->sdev && device->queue_depth !=
1799 device->advertised_queue_depth) {
1800 device->advertised_queue_depth = device->queue_depth;
1801 scsi_change_queue_depth(device->sdev,
1802 device->advertised_queue_depth);
1803 }
1804 }
1805
1806 /* Expose any new devices. */
1807 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
94086f5b 1808 if (!device->sdev) {
6de783f6 1809 pqi_dev_info(ctrl_info, "added", device);
6c223761
KB		 1810 rc = pqi_add_device(ctrl_info, device);
1811 if (rc) {
1812 dev_warn(&ctrl_info->pci_dev->dev,
1813 "scsi %d:%d:%d:%d addition failed, device not added\n",
1814 ctrl_info->scsi_host->host_no,
1815 device->bus, device->target,
1816 device->lun);
1817 pqi_fixup_botched_add(ctrl_info, device);
6c223761
KB		 1818 }
1819 }
6c223761
KB		 1820 }
1821}
1822
1823static bool pqi_is_supported_device(struct pqi_scsi_dev *device)
1824{
1825 bool is_supported = false;
1826
1827 switch (device->devtype) {
1828 case TYPE_DISK:
1829 case TYPE_ZBC:
1830 case TYPE_TAPE:
1831 case TYPE_MEDIUM_CHANGER:
1832 case TYPE_ENCLOSURE:
1833 is_supported = true;
1834 break;
1835 case TYPE_RAID:
1836 /*
1837 * Only support the HBA controller itself as a RAID
1838 * controller. If it's a RAID controller other than
376fb880
KB		 1839 * the HBA itself (an external RAID controller, for
1840 * example), we don't support it.
6c223761
KB		 1841 */
1842 if (pqi_is_hba_lunid(device->scsi3addr))
1843 is_supported = true;
1844 break;
1845 }
1846
1847 return is_supported;
1848}
1849
94086f5b 1850static inline bool pqi_skip_device(u8 *scsi3addr)
6c223761 1851{
94086f5b
KB		 1852 /* Ignore all masked devices. */
1853 if (MASKED_DEVICE(scsi3addr))
6c223761 1854 return true;
6c223761
KB		 1855
1856 return false;
1857}
1858
cd128244
DC		 1859static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
1860{
1861 return !device->is_physical_device ||
1862 !pqi_skip_device(device->scsi3addr);
1863}
1864
6c223761
KB		 1865static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1866{
1867 int i;
1868 int rc;
8a994a04 1869 LIST_HEAD(new_device_list_head);
6c223761
KB		 1870 struct report_phys_lun_extended *physdev_list = NULL;
1871 struct report_log_lun_extended *logdev_list = NULL;
1872 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
1873 struct report_log_lun_extended_entry *log_lun_ext_entry;
1874 struct bmic_identify_physical_device *id_phys = NULL;
1875 u32 num_physicals;
1876 u32 num_logicals;
1877 struct pqi_scsi_dev **new_device_list = NULL;
1878 struct pqi_scsi_dev *device;
1879 struct pqi_scsi_dev *next;
1880 unsigned int num_new_devices;
1881 unsigned int num_valid_devices;
1882 bool is_physical_device;
1883 u8 *scsi3addr;
1884 static char *out_of_memory_msg =
6de783f6 1885 "failed to allocate memory, device discovery stopped";
6c223761 1886
6c223761
KB		 1887 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
1888 if (rc)
1889 goto out;
1890
1891 if (physdev_list)
1892 num_physicals =
1893 get_unaligned_be32(&physdev_list->header.list_length)
1894 / sizeof(physdev_list->lun_entries[0]);
1895 else
1896 num_physicals = 0;
1897
1898 if (logdev_list)
1899 num_logicals =
1900 get_unaligned_be32(&logdev_list->header.list_length)
1901 / sizeof(logdev_list->lun_entries[0]);
1902 else
1903 num_logicals = 0;
1904
1905 if (num_physicals) {
1906 /*
1907 * We need this buffer for calls to pqi_get_physical_disk_info()
1908 * below. We allocate it here instead of inside
1909 * pqi_get_physical_disk_info() because it's a fairly large
1910 * buffer.
1911 */
1912 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
1913 if (!id_phys) {
1914 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1915 out_of_memory_msg);
1916 rc = -ENOMEM;
1917 goto out;
1918 }
1919 }
1920
1921 num_new_devices = num_physicals + num_logicals;
1922
6da2ec56
KC		 1923 new_device_list = kmalloc_array(num_new_devices,
1924 sizeof(*new_device_list),
1925 GFP_KERNEL);
6c223761
KB		 1926 if (!new_device_list) {
1927 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
1928 rc = -ENOMEM;
1929 goto out;
1930 }
1931
1932 for (i = 0; i < num_new_devices; i++) {
1933 device = kzalloc(sizeof(*device), GFP_KERNEL);
1934 if (!device) {
1935 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1936 out_of_memory_msg);
1937 rc = -ENOMEM;
1938 goto out;
1939 }
1940 list_add_tail(&device->new_device_list_entry,
1941 &new_device_list_head);
1942 }
1943
1944 device = NULL;
1945 num_valid_devices = 0;
1946
1947 for (i = 0; i < num_new_devices; i++) {
1948
1949 if (i < num_physicals) {
1950 is_physical_device = true;
1951 phys_lun_ext_entry = &physdev_list->lun_entries[i];
1952 log_lun_ext_entry = NULL;
1953 scsi3addr = phys_lun_ext_entry->lunid;
1954 } else {
1955 is_physical_device = false;
1956 phys_lun_ext_entry = NULL;
1957 log_lun_ext_entry =
1958 &logdev_list->lun_entries[i - num_physicals];
1959 scsi3addr = log_lun_ext_entry->lunid;
1960 }
1961
94086f5b 1962 if (is_physical_device && pqi_skip_device(scsi3addr))
6c223761
KB		 1963 continue;
1964
1965 if (device)
1966 device = list_next_entry(device, new_device_list_entry);
1967 else
1968 device = list_first_entry(&new_device_list_head,
1969 struct pqi_scsi_dev, new_device_list_entry);
1970
1971 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1972 device->is_physical_device = is_physical_device;
bd10cf0b
KB		 1973 if (!is_physical_device)
1974 device->is_external_raid_device =
1975 pqi_is_external_raid_addr(scsi3addr);
6c223761
KB		 1976
1977 /* Gather information about the device. */
1978 rc = pqi_get_device_info(ctrl_info, device);
1979 if (rc == -ENOMEM) {
1980 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1981 out_of_memory_msg);
1982 goto out;
1983 }
1984 if (rc) {
6de783f6
KB		 1985 if (device->is_physical_device)
1986 dev_warn(&ctrl_info->pci_dev->dev,
1987 "obtaining device info failed, skipping physical device %016llx\n",
1988 get_unaligned_be64(
1989 &phys_lun_ext_entry->wwid));
1990 else
1991 dev_warn(&ctrl_info->pci_dev->dev,
1992 "obtaining device info failed, skipping logical device %08x%08x\n",
1993 *((u32 *)&device->scsi3addr),
1994 *((u32 *)&device->scsi3addr[4]));
6c223761
KB		 1995 rc = 0;
1996 continue;
1997 }
1998
1999 if (!pqi_is_supported_device(device))
2000 continue;
2001
2002 pqi_assign_bus_target_lun(device);
2003
6c223761
KB		 2004 if (device->is_physical_device) {
2005 device->wwid = phys_lun_ext_entry->wwid;
2006 if ((phys_lun_ext_entry->device_flags &
2007 REPORT_PHYS_LUN_DEV_FLAG_AIO_ENABLED) &&
2008 phys_lun_ext_entry->aio_handle)
2009 device->aio_enabled = true;
2010 } else {
2011 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
2012 sizeof(device->volume_id));
2013 }
2014
2015 switch (device->devtype) {
2016 case TYPE_DISK:
2017 case TYPE_ZBC:
2018 case TYPE_ENCLOSURE:
2019 if (device->is_physical_device) {
2020 device->sas_address =
2021 get_unaligned_be64(&device->wwid);
2022 if (device->devtype == TYPE_DISK ||
2023 device->devtype == TYPE_ZBC) {
2024 device->aio_handle =
2025 phys_lun_ext_entry->aio_handle;
2026 pqi_get_physical_disk_info(ctrl_info,
2027 device, id_phys);
2028 }
2029 }
2030 break;
2031 }
2032
2033 new_device_list[num_valid_devices++] = device;
2034 }
2035
2036 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
2037
2038out:
2039 list_for_each_entry_safe(device, next, &new_device_list_head,
2040 new_device_list_entry) {
2041 if (device->keep_device)
2042 continue;
2043 list_del(&device->new_device_list_entry);
2044 pqi_free_device(device);
2045 }
2046
2047 kfree(new_device_list);
2048 kfree(physdev_list);
2049 kfree(logdev_list);
2050 kfree(id_phys);
2051
2052 return rc;
2053}
2054
2055static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2056{
2057 unsigned long flags;
2058 struct pqi_scsi_dev *device;
6c223761 2059
a37ef745
KB		 2060 while (1) {
2061 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
2062
2063 device = list_first_entry_or_null(&ctrl_info->scsi_device_list,
2064 struct pqi_scsi_dev, scsi_device_list_entry);
2065 if (device)
2066 list_del(&device->scsi_device_list_entry);
2067
2068 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
2069 flags);
2070
2071 if (!device)
2072 break;
6c223761 2073
6c223761
KB		 2074 if (device->sdev)
2075 pqi_remove_device(ctrl_info, device);
6c223761
KB		 2076 pqi_free_device(device);
2077 }
6c223761
KB		 2078}
2079
2080static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2081{
2082 int rc;
2083
2084 if (pqi_ctrl_offline(ctrl_info))
2085 return -ENXIO;
2086
2087 mutex_lock(&ctrl_info->scan_mutex);
2088
2089 rc = pqi_update_scsi_devices(ctrl_info);
2090 if (rc)
5f310425 2091 pqi_schedule_rescan_worker_delayed(ctrl_info);
6c223761
KB		 2092
2093 mutex_unlock(&ctrl_info->scan_mutex);
2094
2095 return rc;
2096}
2097
2098static void pqi_scan_start(struct Scsi_Host *shost)
2099{
2100 pqi_scan_scsi_devices(shost_to_hba(shost));
2101}
2102
2103/* Returns TRUE if scan is finished. */
2104
2105static int pqi_scan_finished(struct Scsi_Host *shost,
2106 unsigned long elapsed_time)
2107{
2108 struct pqi_ctrl_info *ctrl_info;
2109
2110 ctrl_info = shost_priv(shost);
2111
2112 return !mutex_is_locked(&ctrl_info->scan_mutex);
2113}
2114
061ef06a
KB		 2115static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
2116{
2117 mutex_lock(&ctrl_info->scan_mutex);
2118 mutex_unlock(&ctrl_info->scan_mutex);
2119}
2120
2121static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
2122{
2123 mutex_lock(&ctrl_info->lun_reset_mutex);
2124 mutex_unlock(&ctrl_info->lun_reset_mutex);
2125}
2126
6c223761
KB		 2127static inline void pqi_set_encryption_info(
2128 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map,
2129 u64 first_block)
2130{
2131 u32 volume_blk_size;
2132
2133 /*
2134 * Set the encryption tweak values based on logical block address.
2135 * If the block size is 512, the tweak value is equal to the LBA.
2136 * For other block sizes, tweak value is (LBA * block size) / 512.
2137 */
2138 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2139 if (volume_blk_size != 512)
2140 first_block = (first_block * volume_blk_size) / 512;
2141
2142 encryption_info->data_encryption_key_index =
2143 get_unaligned_le16(&raid_map->data_encryption_key_index);
2144 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2145 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2146}
2147
2148/*
588a63fe 2149 * Attempt to perform RAID bypass mapping for a logical volume I/O.
6c223761
KB		 2150 */
2151
2152#define PQI_RAID_BYPASS_INELIGIBLE 1
2153
2154static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2155 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2156 struct pqi_queue_group *queue_group)
2157{
2158 struct raid_map *raid_map;
2159 bool is_write = false;
2160 u32 map_index;
2161 u64 first_block;
2162 u64 last_block;
2163 u32 block_cnt;
2164 u32 blocks_per_row;
2165 u64 first_row;
2166 u64 last_row;
2167 u32 first_row_offset;
2168 u32 last_row_offset;
2169 u32 first_column;
2170 u32 last_column;
2171 u64 r0_first_row;
2172 u64 r0_last_row;
2173 u32 r5or6_blocks_per_row;
2174 u64 r5or6_first_row;
2175 u64 r5or6_last_row;
2176 u32 r5or6_first_row_offset;
2177 u32 r5or6_last_row_offset;
2178 u32 r5or6_first_column;
2179 u32 r5or6_last_column;
2180 u16 data_disks_per_row;
2181 u32 total_disks_per_row;
2182 u16 layout_map_count;
2183 u32 stripesize;
2184 u16 strip_size;
2185 u32 first_group;
2186 u32 last_group;
2187 u32 current_group;
2188 u32 map_row;
2189 u32 aio_handle;
2190 u64 disk_block;
2191 u32 disk_block_cnt;
2192 u8 cdb[16];
2193 u8 cdb_length;
2194 int offload_to_mirror;
2195 struct pqi_encryption_info *encryption_info_ptr;
2196 struct pqi_encryption_info encryption_info;
2197#if BITS_PER_LONG == 32
2198 u64 tmpdiv;
2199#endif
2200
2201 /* Check for valid opcode, get LBA and block count. */
2202 switch (scmd->cmnd[0]) {
2203 case WRITE_6:
2204 is_write = true;
2205 /* fall through */
2206 case READ_6:
e018ef57
B		 2207 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2208 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
6c223761
KB		 2209 block_cnt = (u32)scmd->cmnd[4];
2210 if (block_cnt == 0)
2211 block_cnt = 256;
2212 break;
2213 case WRITE_10:
2214 is_write = true;
2215 /* fall through */
2216 case READ_10:
2217 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2218 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2219 break;
2220 case WRITE_12:
2221 is_write = true;
2222 /* fall through */
2223 case READ_12:
2224 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2225 block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2226 break;
2227 case WRITE_16:
2228 is_write = true;
2229 /* fall through */
2230 case READ_16:
2231 first_block = get_unaligned_be64(&scmd->cmnd[2]);
2232 block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2233 break;
2234 default:
2235 /* Process via normal I/O path. */
2236 return PQI_RAID_BYPASS_INELIGIBLE;
2237 }
2238
2239 /* Check for write to non-RAID-0. */
2240 if (is_write && device->raid_level != SA_RAID_0)
2241 return PQI_RAID_BYPASS_INELIGIBLE;
2242
2243 if (unlikely(block_cnt == 0))
2244 return PQI_RAID_BYPASS_INELIGIBLE;
2245
2246 last_block = first_block + block_cnt - 1;
2247 raid_map = device->raid_map;
2248
2249 /* Check for invalid block or wraparound. */
2250 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2251 last_block < first_block)
2252 return PQI_RAID_BYPASS_INELIGIBLE;
2253
2254 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row);
2255 strip_size = get_unaligned_le16(&raid_map->strip_size);
2256 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2257
2258 /* Calculate stripe information for the request. */
2259 blocks_per_row = data_disks_per_row * strip_size;
2260#if BITS_PER_LONG == 32
2261 tmpdiv = first_block;
2262 do_div(tmpdiv, blocks_per_row);
2263 first_row = tmpdiv;
2264 tmpdiv = last_block;
2265 do_div(tmpdiv, blocks_per_row);
2266 last_row = tmpdiv;
2267 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2268 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2269 tmpdiv = first_row_offset;
2270 do_div(tmpdiv, strip_size);
2271 first_column = tmpdiv;
2272 tmpdiv = last_row_offset;
2273 do_div(tmpdiv, strip_size);
2274 last_column = tmpdiv;
2275#else
2276 first_row = first_block / blocks_per_row;
2277 last_row = last_block / blocks_per_row;
2278 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2279 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2280 first_column = first_row_offset / strip_size;
2281 last_column = last_row_offset / strip_size;
2282#endif
2283
2284 /* If this isn't a single row/column then give to the controller. */
2285 if (first_row != last_row || first_column != last_column)
2286 return PQI_RAID_BYPASS_INELIGIBLE;
2287
2288 /* Proceeding with driver mapping. */
2289 total_disks_per_row = data_disks_per_row +
2290 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2291 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2292 get_unaligned_le16(&raid_map->row_cnt);
2293 map_index = (map_row * total_disks_per_row) + first_column;
2294
2295 /* RAID 1 */
2296 if (device->raid_level == SA_RAID_1) {
2297 if (device->offload_to_mirror)
2298 map_index += data_disks_per_row;
2299 device->offload_to_mirror = !device->offload_to_mirror;
2300 } else if (device->raid_level == SA_RAID_ADM) {
2301 /* RAID ADM */
2302 /*
2303 * Handles N-way mirrors (R1-ADM) and R10 with # of drives
2304 * divisible by 3.
2305 */
2306 offload_to_mirror = device->offload_to_mirror;
2307 if (offload_to_mirror == 0) {
2308 /* use physical disk in the first mirrored group. */
2309 map_index %= data_disks_per_row;
2310 } else {
2311 do {
2312 /*
2313 * Determine mirror group that map_index
2314 * indicates.
2315 */
2316 current_group = map_index / data_disks_per_row;
2317
2318 if (offload_to_mirror != current_group) {
2319 if (current_group <
2320 layout_map_count - 1) {
2321 /*
2322 * Select raid index from
2323 * next group.
2324 */
2325 map_index += data_disks_per_row;
2326 current_group++;
2327 } else {
2328 /*
2329 * Select raid index from first
2330 * group.
2331 */
2332 map_index %= data_disks_per_row;
2333 current_group = 0;
2334 }
2335 }
2336 } while (offload_to_mirror != current_group);
2337 }
2338
2339 /* Set mirror group to use next time. */
2340 offload_to_mirror =
2341 (offload_to_mirror >= layout_map_count - 1) ?
2342 0 : offload_to_mirror + 1;
2343 WARN_ON(offload_to_mirror >= layout_map_count);
2344 device->offload_to_mirror = offload_to_mirror;
2345 /*
2346 * Avoid direct use of device->offload_to_mirror within this
2347 * function since multiple threads might simultaneously
2348 * increment it beyond the range of device->layout_map_count -1.
2349 */
2350 } else if ((device->raid_level == SA_RAID_5 ||
2351 device->raid_level == SA_RAID_6) && layout_map_count > 1) {
2352 /* RAID 50/60 */
2353 /* Verify first and last block are in same RAID group */
2354 r5or6_blocks_per_row = strip_size * data_disks_per_row;
2355 stripesize = r5or6_blocks_per_row * layout_map_count;
2356#if BITS_PER_LONG == 32
2357 tmpdiv = first_block;
2358 first_group = do_div(tmpdiv, stripesize);
2359 tmpdiv = first_group;
2360 do_div(tmpdiv, r5or6_blocks_per_row);
2361 first_group = tmpdiv;
2362 tmpdiv = last_block;
2363 last_group = do_div(tmpdiv, stripesize);
2364 tmpdiv = last_group;
2365 do_div(tmpdiv, r5or6_blocks_per_row);
2366 last_group = tmpdiv;
2367#else
2368 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
2369 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
2370#endif
2371 if (first_group != last_group)
2372 return PQI_RAID_BYPASS_INELIGIBLE;
2373
2374 /* Verify request is in a single row of RAID 5/6 */
2375#if BITS_PER_LONG == 32
2376 tmpdiv = first_block;
2377 do_div(tmpdiv, stripesize);
2378 first_row = r5or6_first_row = r0_first_row = tmpdiv;
2379 tmpdiv = last_block;
2380 do_div(tmpdiv, stripesize);
2381 r5or6_last_row = r0_last_row = tmpdiv;
2382#else
2383 first_row = r5or6_first_row = r0_first_row =
2384 first_block / stripesize;
2385 r5or6_last_row = r0_last_row = last_block / stripesize;
2386#endif
2387 if (r5or6_first_row != r5or6_last_row)
2388 return PQI_RAID_BYPASS_INELIGIBLE;
2389
2390 /* Verify request is in a single column */
2391#if BITS_PER_LONG == 32
2392 tmpdiv = first_block;
2393 first_row_offset = do_div(tmpdiv, stripesize);
2394 tmpdiv = first_row_offset;
2395 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row);
2396 r5or6_first_row_offset = first_row_offset;
2397 tmpdiv = last_block;
2398 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
2399 tmpdiv = r5or6_last_row_offset;
2400 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
2401 tmpdiv = r5or6_first_row_offset;
2402 do_div(tmpdiv, strip_size);
2403 first_column = r5or6_first_column = tmpdiv;
2404 tmpdiv = r5or6_last_row_offset;
2405 do_div(tmpdiv, strip_size);
2406 r5or6_last_column = tmpdiv;
2407#else
2408 first_row_offset = r5or6_first_row_offset =
2409 (u32)((first_block % stripesize) %
2410 r5or6_blocks_per_row);
2411
2412 r5or6_last_row_offset =
2413 (u32)((last_block % stripesize) %
2414 r5or6_blocks_per_row);
2415
2416 first_column = r5or6_first_row_offset / strip_size;
2417 r5or6_first_column = first_column;
2418 r5or6_last_column = r5or6_last_row_offset / strip_size;
2419#endif
2420 if (r5or6_first_column != r5or6_last_column)
2421 return PQI_RAID_BYPASS_INELIGIBLE;
2422
2423 /* Request is eligible */
2424 map_row =
2425 ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2426 get_unaligned_le16(&raid_map->row_cnt);
2427
2428 map_index = (first_group *
2429 (get_unaligned_le16(&raid_map->row_cnt) *
2430 total_disks_per_row)) +
2431 (map_row * total_disks_per_row) + first_column;
2432 }
2433
2434 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
2435 return PQI_RAID_BYPASS_INELIGIBLE;
2436
2437 aio_handle = raid_map->disk_data[map_index].aio_handle;
2438 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2439 first_row * strip_size +
2440 (first_row_offset - first_column * strip_size);
2441 disk_block_cnt = block_cnt;
2442
2443 /* Handle differing logical/physical block sizes. */
2444 if (raid_map->phys_blk_shift) {
2445 disk_block <<= raid_map->phys_blk_shift;
2446 disk_block_cnt <<= raid_map->phys_blk_shift;
2447 }
2448
2449 if (unlikely(disk_block_cnt > 0xffff))
2450 return PQI_RAID_BYPASS_INELIGIBLE;
2451
2452 /* Build the new CDB for the physical disk I/O. */
2453 if (disk_block > 0xffffffff) {
2454 cdb[0] = is_write ? WRITE_16 : READ_16;
2455 cdb[1] = 0;
2456 put_unaligned_be64(disk_block, &cdb[2]);
2457 put_unaligned_be32(disk_block_cnt, &cdb[10]);
2458 cdb[14] = 0;
2459 cdb[15] = 0;
2460 cdb_length = 16;
2461 } else {
2462 cdb[0] = is_write ? WRITE_10 : READ_10;
2463 cdb[1] = 0;
2464 put_unaligned_be32((u32)disk_block, &cdb[2]);
2465 cdb[6] = 0;
2466 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]);
2467 cdb[9] = 0;
2468 cdb_length = 10;
2469 }
2470
2471 if (get_unaligned_le16(&raid_map->flags) &
2472 RAID_MAP_ENCRYPTION_ENABLED) {
2473 pqi_set_encryption_info(&encryption_info, raid_map,
2474 first_block);
2475 encryption_info_ptr = &encryption_info;
2476 } else {
2477 encryption_info_ptr = NULL;
2478 }
2479
2480 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
376fb880 2481 cdb, cdb_length, queue_group, encryption_info_ptr, true);
6c223761
KB		 2482}
2483
2484#define PQI_STATUS_IDLE 0x0
2485
2486#define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2487#define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2488
2489#define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2490#define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2491#define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2492#define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2493#define PQI_DEVICE_STATE_ERROR 0x4
2494
2495#define PQI_MODE_READY_TIMEOUT_SECS 30
2496#define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2497
2498static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2499{
2500 struct pqi_device_registers __iomem *pqi_registers;
2501 unsigned long timeout;
2502 u64 signature;
2503 u8 status;
2504
2505 pqi_registers = ctrl_info->pqi_registers;
2506 timeout = (PQI_MODE_READY_TIMEOUT_SECS * HZ) + jiffies;
2507
2508 while (1) {
2509 signature = readq(&pqi_registers->signature);
2510 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2511 sizeof(signature)) == 0)
2512 break;
2513 if (time_after(jiffies, timeout)) {
2514 dev_err(&ctrl_info->pci_dev->dev,
2515 "timed out waiting for PQI signature\n");
2516 return -ETIMEDOUT;
2517 }
2518 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2519 }
2520
2521 while (1) {
2522 status = readb(&pqi_registers->function_and_status_code);
2523 if (status == PQI_STATUS_IDLE)
2524 break;
2525 if (time_after(jiffies, timeout)) {
2526 dev_err(&ctrl_info->pci_dev->dev,
2527 "timed out waiting for PQI IDLE\n");
2528 return -ETIMEDOUT;
2529 }
2530 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2531 }
2532
2533 while (1) {
2534 if (readl(&pqi_registers->device_status) ==
2535 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2536 break;
2537 if (time_after(jiffies, timeout)) {
2538 dev_err(&ctrl_info->pci_dev->dev,
2539 "timed out waiting for PQI all registers ready\n");
2540 return -ETIMEDOUT;
2541 }
2542 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2543 }
2544
2545 return 0;
2546}
2547
2548static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2549{
2550 struct pqi_scsi_dev *device;
2551
2552 device = io_request->scmd->device->hostdata;
588a63fe 2553 device->raid_bypass_enabled = false;
376fb880 2554 device->aio_enabled = false;
6c223761
KB		 2555}
2556
d87d5474 2557static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
6c223761
KB		 2558{
2559 struct pqi_ctrl_info *ctrl_info;
e58081a7 2560 struct pqi_scsi_dev *device;
6c223761 2561
03b288cf
KB		 2562 device = sdev->hostdata;
2563 if (device->device_offline)
2564 return;
2565
2566 device->device_offline = true;
2567 scsi_device_set_state(sdev, SDEV_OFFLINE);
2568 ctrl_info = shost_to_hba(sdev->host);
2569 pqi_schedule_rescan_worker(ctrl_info);
2570 dev_err(&ctrl_info->pci_dev->dev, "offlined %s scsi %d:%d:%d:%d\n",
2571 path, ctrl_info->scsi_host->host_no, device->bus,
2572 device->target, device->lun);
6c223761
KB		 2573}
2574
2575static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2576{
2577 u8 scsi_status;
2578 u8 host_byte;
2579 struct scsi_cmnd *scmd;
2580 struct pqi_raid_error_info *error_info;
2581 size_t sense_data_length;
2582 int residual_count;
2583 int xfer_count;
2584 struct scsi_sense_hdr sshdr;
2585
2586 scmd = io_request->scmd;
2587 if (!scmd)
2588 return;
2589
2590 error_info = io_request->error_info;
2591 scsi_status = error_info->status;
2592 host_byte = DID_OK;
2593
f5b63206
KB		 2594 switch (error_info->data_out_result) {
2595 case PQI_DATA_IN_OUT_GOOD:
2596 break;
2597 case PQI_DATA_IN_OUT_UNDERFLOW:
6c223761
KB		 2598 xfer_count =
2599 get_unaligned_le32(&error_info->data_out_transferred);
2600 residual_count = scsi_bufflen(scmd) - xfer_count;
2601 scsi_set_resid(scmd, residual_count);
2602 if (xfer_count < scmd->underflow)
2603 host_byte = DID_SOFT_ERROR;
f5b63206
KB		 2604 break;
2605 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
2606 case PQI_DATA_IN_OUT_ABORTED:
2607 host_byte = DID_ABORT;
2608 break;
2609 case PQI_DATA_IN_OUT_TIMEOUT:
2610 host_byte = DID_TIME_OUT;
2611 break;
2612 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
2613 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
2614 case PQI_DATA_IN_OUT_BUFFER_ERROR:
2615 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
2616 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
2617 case PQI_DATA_IN_OUT_ERROR:
2618 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
2619 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
2620 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
2621 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
2622 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
2623 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
2624 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
2625 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
2626 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
2627 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
2628 default:
2629 host_byte = DID_ERROR;
2630 break;
6c223761
KB		 2631 }
2632
2633 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2634 if (sense_data_length == 0)
2635 sense_data_length =
2636 get_unaligned_le16(&error_info->response_data_length);
2637 if (sense_data_length) {
2638 if (sense_data_length > sizeof(error_info->data))
2639 sense_data_length = sizeof(error_info->data);
2640
2641 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2642 scsi_normalize_sense(error_info->data,
2643 sense_data_length, &sshdr) &&
2644 sshdr.sense_key == HARDWARE_ERROR &&
2645 sshdr.asc == 0x3e &&
2646 sshdr.ascq == 0x1) {
d87d5474 2647 pqi_take_device_offline(scmd->device, "RAID");
6c223761
KB		 2648 host_byte = DID_NO_CONNECT;
2649 }
2650
2651 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2652 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2653 memcpy(scmd->sense_buffer, error_info->data,
2654 sense_data_length);
2655 }
2656
2657 scmd->result = scsi_status;
2658 set_host_byte(scmd, host_byte);
2659}
2660
2661static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2662{
2663 u8 scsi_status;
2664 u8 host_byte;
2665 struct scsi_cmnd *scmd;
2666 struct pqi_aio_error_info *error_info;
2667 size_t sense_data_length;
2668 int residual_count;
2669 int xfer_count;
2670 bool device_offline;
2671
2672 scmd = io_request->scmd;
2673 error_info = io_request->error_info;
2674 host_byte = DID_OK;
2675 sense_data_length = 0;
2676 device_offline = false;
2677
2678 switch (error_info->service_response) {
2679 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2680 scsi_status = error_info->status;
2681 break;
2682 case PQI_AIO_SERV_RESPONSE_FAILURE:
2683 switch (error_info->status) {
2684 case PQI_AIO_STATUS_IO_ABORTED:
2685 scsi_status = SAM_STAT_TASK_ABORTED;
2686 break;
2687 case PQI_AIO_STATUS_UNDERRUN:
2688 scsi_status = SAM_STAT_GOOD;
2689 residual_count = get_unaligned_le32(
2690 &error_info->residual_count);
2691 scsi_set_resid(scmd, residual_count);
2692 xfer_count = scsi_bufflen(scmd) - residual_count;
2693 if (xfer_count < scmd->underflow)
2694 host_byte = DID_SOFT_ERROR;
2695 break;
2696 case PQI_AIO_STATUS_OVERRUN:
2697 scsi_status = SAM_STAT_GOOD;
2698 break;
2699 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2700 pqi_aio_path_disabled(io_request);
2701 scsi_status = SAM_STAT_GOOD;
2702 io_request->status = -EAGAIN;
2703 break;
2704 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
2705 case PQI_AIO_STATUS_INVALID_DEVICE:
376fb880
KB		 2706 if (!io_request->raid_bypass) {
2707 device_offline = true;
2708 pqi_take_device_offline(scmd->device, "AIO");
2709 host_byte = DID_NO_CONNECT;
2710 }
6c223761
KB		 2711 scsi_status = SAM_STAT_CHECK_CONDITION;
2712 break;
2713 case PQI_AIO_STATUS_IO_ERROR:
2714 default:
2715 scsi_status = SAM_STAT_CHECK_CONDITION;
2716 break;
2717 }
2718 break;
2719 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
2720 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
2721 scsi_status = SAM_STAT_GOOD;
2722 break;
2723 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
2724 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
2725 default:
2726 scsi_status = SAM_STAT_CHECK_CONDITION;
2727 break;
2728 }
2729
2730 if (error_info->data_present) {
2731 sense_data_length =
2732 get_unaligned_le16(&error_info->data_length);
2733 if (sense_data_length) {
2734 if (sense_data_length > sizeof(error_info->data))
2735 sense_data_length = sizeof(error_info->data);
2736 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2737 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2738 memcpy(scmd->sense_buffer, error_info->data,
2739 sense_data_length);
2740 }
2741 }
2742
2743 if (device_offline && sense_data_length == 0)
2744 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
2745 0x3e, 0x1);
2746
2747 scmd->result = scsi_status;
2748 set_host_byte(scmd, host_byte);
2749}
2750
2751static void pqi_process_io_error(unsigned int iu_type,
2752 struct pqi_io_request *io_request)
2753{
2754 switch (iu_type) {
2755 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2756 pqi_process_raid_io_error(io_request);
2757 break;
2758 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2759 pqi_process_aio_io_error(io_request);
2760 break;
2761 }
2762}
2763
2764static int pqi_interpret_task_management_response(
2765 struct pqi_task_management_response *response)
2766{
2767 int rc;
2768
2769 switch (response->response_code) {
b17f0486
KB		 2770 case SOP_TMF_COMPLETE:
2771 case SOP_TMF_FUNCTION_SUCCEEDED:
6c223761
KB		 2772 rc = 0;
2773 break;
3406384b
MR		 2774 case SOP_TMF_REJECTED:
2775 rc = -EAGAIN;
2776 break;
6c223761
KB		 2777 default:
2778 rc = -EIO;
2779 break;
2780 }
2781
2782 return rc;
2783}
2784
2785static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info,
2786 struct pqi_queue_group *queue_group)
2787{
2788 unsigned int num_responses;
2789 pqi_index_t oq_pi;
2790 pqi_index_t oq_ci;
2791 struct pqi_io_request *io_request;
2792 struct pqi_io_response *response;
2793 u16 request_id;
2794
2795 num_responses = 0;
2796 oq_ci = queue_group->oq_ci_copy;
2797
2798 while (1) {
dac12fbc 2799 oq_pi = readl(queue_group->oq_pi);
6c223761
KB		 2800 if (oq_pi == oq_ci)
2801 break;
2802
2803 num_responses++;
2804 response = queue_group->oq_element_array +
2805 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
2806
2807 request_id = get_unaligned_le16(&response->request_id);
2808 WARN_ON(request_id >= ctrl_info->max_io_slots);
2809
2810 io_request = &ctrl_info->io_request_pool[request_id];
2811 WARN_ON(atomic_read(&io_request->refcount) == 0);
2812
2813 switch (response->header.iu_type) {
2814 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
2815 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2816 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
2817 break;
b212c251
KB		 2818 case PQI_RESPONSE_IU_VENDOR_GENERAL:
2819 io_request->status =
2820 get_unaligned_le16(
2821 &((struct pqi_vendor_general_response *)
2822 response)->status);
2823 break;
6c223761
KB		 2824 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
2825 io_request->status =
2826 pqi_interpret_task_management_response(
2827 (void *)response);
2828 break;
2829 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
2830 pqi_aio_path_disabled(io_request);
2831 io_request->status = -EAGAIN;
2832 break;
2833 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2834 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2835 io_request->error_info = ctrl_info->error_buffer +
2836 (get_unaligned_le16(&response->error_index) *
2837 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
2838 pqi_process_io_error(response->header.iu_type,
2839 io_request);
2840 break;
2841 default:
2842 dev_err(&ctrl_info->pci_dev->dev,
2843 "unexpected IU type: 0x%x\n",
2844 response->header.iu_type);
6c223761
KB		 2845 break;
2846 }
2847
2848 io_request->io_complete_callback(io_request,
2849 io_request->context);
2850
2851 /*
2852 * Note that the I/O request structure CANNOT BE TOUCHED after
2853 * returning from the I/O completion callback!
2854 */
2855
2856 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
2857 }
2858
2859 if (num_responses) {
2860 queue_group->oq_ci_copy = oq_ci;
2861 writel(oq_ci, queue_group->oq_ci);
2862 }
2863
2864 return num_responses;
2865}
2866
2867static inline unsigned int pqi_num_elements_free(unsigned int pi,
df7a1fcf 2868 unsigned int ci, unsigned int elements_in_queue)
6c223761
KB		 2869{
2870 unsigned int num_elements_used;
2871
2872 if (pi >= ci)
2873 num_elements_used = pi - ci;
2874 else
2875 num_elements_used = elements_in_queue - ci + pi;
2876
2877 return elements_in_queue - num_elements_used - 1;
2878}
2879
98f87667 2880static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 2881 struct pqi_event_acknowledge_request *iu, size_t iu_length)
2882{
2883 pqi_index_t iq_pi;
2884 pqi_index_t iq_ci;
2885 unsigned long flags;
2886 void *next_element;
6c223761
KB		 2887 struct pqi_queue_group *queue_group;
2888
2889 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
2890 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
2891
6c223761
KB		 2892 while (1) {
2893 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
2894
2895 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
dac12fbc 2896 iq_ci = readl(queue_group->iq_ci[RAID_PATH]);
6c223761
KB		 2897
2898 if (pqi_num_elements_free(iq_pi, iq_ci,
2899 ctrl_info->num_elements_per_iq))
2900 break;
2901
2902 spin_unlock_irqrestore(
2903 &queue_group->submit_lock[RAID_PATH], flags);
2904
98f87667 2905 if (pqi_ctrl_offline(ctrl_info))
6c223761 2906 return;
6c223761
KB		 2907 }
2908
2909 next_element = queue_group->iq_element_array[RAID_PATH] +
2910 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
2911
2912 memcpy(next_element, iu, iu_length);
2913
2914 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
6c223761
KB		 2915 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
2916
2917 /*
2918 * This write notifies the controller that an IU is available to be
2919 * processed.
2920 */
2921 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
2922
2923 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
6c223761
KB		 2924}
2925
2926static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
2927 struct pqi_event *event)
2928{
2929 struct pqi_event_acknowledge_request request;
2930
2931 memset(&request, 0, sizeof(request));
2932
2933 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
2934 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
2935 &request.header.iu_length);
2936 request.event_type = event->event_type;
2937 request.event_id = event->event_id;
2938 request.additional_event_id = event->additional_event_id;
2939
98f87667 2940 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
6c223761
KB		 2941}
2942
2943static void pqi_event_worker(struct work_struct *work)
2944{
2945 unsigned int i;
2946 struct pqi_ctrl_info *ctrl_info;
6a50d6ad 2947 struct pqi_event *event;
6c223761
KB		 2948
2949 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
2950
7561a7e4
KB		 2951 pqi_ctrl_busy(ctrl_info);
2952 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
5f310425
KB		 2953 if (pqi_ctrl_offline(ctrl_info))
2954 goto out;
2955
2956 pqi_schedule_rescan_worker_delayed(ctrl_info);
7561a7e4 2957
6a50d6ad 2958 event = ctrl_info->events;
6c223761 2959 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
6a50d6ad
KB		 2960 if (event->pending) {
2961 event->pending = false;
2962 pqi_acknowledge_event(ctrl_info, event);
6c223761 2963 }
6a50d6ad 2964 event++;
6c223761
KB		 2965 }
2966
5f310425 2967out:
7561a7e4 2968 pqi_ctrl_unbusy(ctrl_info);
6c223761
KB		 2969}
2970
98f87667 2971#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * HZ)
6c223761 2972
74a0f573 2973static void pqi_heartbeat_timer_handler(struct timer_list *t)
6c223761
KB		 2974{
2975 int num_interrupts;
98f87667 2976 u32 heartbeat_count;
74a0f573
KC		 2977 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t,
2978 heartbeat_timer);
6c223761 2979
98f87667
KB		 2980 pqi_check_ctrl_health(ctrl_info);
2981 if (pqi_ctrl_offline(ctrl_info))
061ef06a
KB		 2982 return;
2983
6c223761 2984 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
98f87667 2985 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
6c223761
KB		 2986
2987 if (num_interrupts == ctrl_info->previous_num_interrupts) {
98f87667
KB		 2988 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
2989 dev_err(&ctrl_info->pci_dev->dev,
2990 "no heartbeat detected - last heartbeat count: %u\n",
2991 heartbeat_count);
6c223761
KB		 2992 pqi_take_ctrl_offline(ctrl_info);
2993 return;
2994 }
6c223761 2995 } else {
98f87667 2996 ctrl_info->previous_num_interrupts = num_interrupts;
6c223761
KB		 2997 }
2998
98f87667 2999 ctrl_info->previous_heartbeat_count = heartbeat_count;
6c223761
KB		 3000 mod_timer(&ctrl_info->heartbeat_timer,
3001 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
3002}
3003
3004static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3005{
98f87667
KB		 3006 if (!ctrl_info->heartbeat_counter)
3007 return;
3008
6c223761
KB		 3009 ctrl_info->previous_num_interrupts =
3010 atomic_read(&ctrl_info->num_interrupts);
98f87667
KB		 3011 ctrl_info->previous_heartbeat_count =
3012 pqi_read_heartbeat_counter(ctrl_info);
6c223761 3013
6c223761
KB		 3014 ctrl_info->heartbeat_timer.expires =
3015 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
061ef06a 3016 add_timer(&ctrl_info->heartbeat_timer);
6c223761
KB		 3017}
3018
3019static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3020{
98f87667 3021 del_timer_sync(&ctrl_info->heartbeat_timer);
6c223761
KB		 3022}
3023
6a50d6ad 3024static inline int pqi_event_type_to_event_index(unsigned int event_type)
6c223761
KB		 3025{
3026 int index;
3027
6a50d6ad
KB		 3028 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
3029 if (event_type == pqi_supported_event_types[index])
3030 return index;
6c223761 3031
6a50d6ad
KB		 3032 return -1;
3033}
3034
3035static inline bool pqi_is_supported_event(unsigned int event_type)
3036{
3037 return pqi_event_type_to_event_index(event_type) != -1;
6c223761
KB		 3038}
3039
3040static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
3041{
3042 unsigned int num_events;
3043 pqi_index_t oq_pi;
3044 pqi_index_t oq_ci;
3045 struct pqi_event_queue *event_queue;
3046 struct pqi_event_response *response;
6a50d6ad 3047 struct pqi_event *event;
6c223761
KB		 3048 int event_index;
3049
3050 event_queue = &ctrl_info->event_queue;
3051 num_events = 0;
6c223761
KB		 3052 oq_ci = event_queue->oq_ci_copy;
3053
3054 while (1) {
dac12fbc 3055 oq_pi = readl(event_queue->oq_pi);
6c223761
KB		 3056 if (oq_pi == oq_ci)
3057 break;
3058
3059 num_events++;
3060 response = event_queue->oq_element_array +
3061 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
3062
3063 event_index =
3064 pqi_event_type_to_event_index(response->event_type);
3065
3066 if (event_index >= 0) {
3067 if (response->request_acknowlege) {
6a50d6ad
KB		 3068 event = &ctrl_info->events[event_index];
3069 event->pending = true;
3070 event->event_type = response->event_type;
3071 event->event_id = response->event_id;
3072 event->additional_event_id =
6c223761 3073 response->additional_event_id;
6c223761
KB		 3074 }
3075 }
3076
3077 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
3078 }
3079
3080 if (num_events) {
3081 event_queue->oq_ci_copy = oq_ci;
3082 writel(oq_ci, event_queue->oq_ci);
98f87667 3083 schedule_work(&ctrl_info->event_work);
6c223761
KB		 3084 }
3085
3086 return num_events;
3087}
3088
061ef06a
KB		 3089#define PQI_LEGACY_INTX_MASK 0x1
3090
3091static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info,
3092 bool enable_intx)
3093{
3094 u32 intx_mask;
3095 struct pqi_device_registers __iomem *pqi_registers;
3096 volatile void __iomem *register_addr;
3097
3098 pqi_registers = ctrl_info->pqi_registers;
3099
3100 if (enable_intx)
3101 register_addr = &pqi_registers->legacy_intx_mask_clear;
3102 else
3103 register_addr = &pqi_registers->legacy_intx_mask_set;
3104
3105 intx_mask = readl(register_addr);
3106 intx_mask |= PQI_LEGACY_INTX_MASK;
3107 writel(intx_mask, register_addr);
3108}
3109
3110static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3111 enum pqi_irq_mode new_mode)
3112{
3113 switch (ctrl_info->irq_mode) {
3114 case IRQ_MODE_MSIX:
3115 switch (new_mode) {
3116 case IRQ_MODE_MSIX:
3117 break;
3118 case IRQ_MODE_INTX:
3119 pqi_configure_legacy_intx(ctrl_info, true);
061ef06a
KB		 3120 sis_enable_intx(ctrl_info);
3121 break;
3122 case IRQ_MODE_NONE:
061ef06a
KB		 3123 break;
3124 }
3125 break;
3126 case IRQ_MODE_INTX:
3127 switch (new_mode) {
3128 case IRQ_MODE_MSIX:
3129 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3130 sis_enable_msix(ctrl_info);
3131 break;
3132 case IRQ_MODE_INTX:
3133 break;
3134 case IRQ_MODE_NONE:
3135 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3136 break;
3137 }
3138 break;
3139 case IRQ_MODE_NONE:
3140 switch (new_mode) {
3141 case IRQ_MODE_MSIX:
3142 sis_enable_msix(ctrl_info);
3143 break;
3144 case IRQ_MODE_INTX:
3145 pqi_configure_legacy_intx(ctrl_info, true);
3146 sis_enable_intx(ctrl_info);
3147 break;
3148 case IRQ_MODE_NONE:
3149 break;
3150 }
3151 break;
3152 }
3153
3154 ctrl_info->irq_mode = new_mode;
3155}
3156
3157#define PQI_LEGACY_INTX_PENDING 0x1
3158
3159static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3160{
3161 bool valid_irq;
3162 u32 intx_status;
3163
3164 switch (ctrl_info->irq_mode) {
3165 case IRQ_MODE_MSIX:
3166 valid_irq = true;
3167 break;
3168 case IRQ_MODE_INTX:
3169 intx_status =
3170 readl(&ctrl_info->pqi_registers->legacy_intx_status);
3171 if (intx_status & PQI_LEGACY_INTX_PENDING)
3172 valid_irq = true;
3173 else
3174 valid_irq = false;
3175 break;
3176 case IRQ_MODE_NONE:
3177 default:
3178 valid_irq = false;
3179 break;
3180 }
3181
3182 return valid_irq;
3183}
3184
6c223761
KB		 3185static irqreturn_t pqi_irq_handler(int irq, void *data)
3186{
3187 struct pqi_ctrl_info *ctrl_info;
3188 struct pqi_queue_group *queue_group;
3189 unsigned int num_responses_handled;
3190
3191 queue_group = data;
3192 ctrl_info = queue_group->ctrl_info;
3193
061ef06a 3194 if (!pqi_is_valid_irq(ctrl_info))
6c223761
KB		 3195 return IRQ_NONE;
3196
3197 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3198
3199 if (irq == ctrl_info->event_irq)
3200 num_responses_handled += pqi_process_event_intr(ctrl_info);
3201
3202 if (num_responses_handled)
3203 atomic_inc(&ctrl_info->num_interrupts);
3204
3205 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3206 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3207
3208 return IRQ_HANDLED;
3209}
3210
3211static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3212{
d91d7820 3213 struct pci_dev *pci_dev = ctrl_info->pci_dev;
6c223761
KB		 3214 int i;
3215 int rc;
3216
d91d7820 3217 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
6c223761
KB		 3218
3219 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
d91d7820 3220 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
52198226 3221 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
6c223761 3222 if (rc) {
d91d7820 3223 dev_err(&pci_dev->dev,
6c223761 3224 "irq %u init failed with error %d\n",
d91d7820 3225 pci_irq_vector(pci_dev, i), rc);
6c223761
KB		 3226 return rc;
3227 }
3228 ctrl_info->num_msix_vectors_initialized++;
3229 }
3230
3231 return 0;
3232}
3233
98bf061b
KB		 3234static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3235{
3236 int i;
3237
3238 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3239 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3240 &ctrl_info->queue_groups[i]);
3241
3242 ctrl_info->num_msix_vectors_initialized = 0;
3243}
3244
6c223761
KB		 3245static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3246{
98bf061b 3247 int num_vectors_enabled;
6c223761 3248
98bf061b 3249 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
52198226
CH		 3250 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3251 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
98bf061b 3252 if (num_vectors_enabled < 0) {
6c223761 3253 dev_err(&ctrl_info->pci_dev->dev,
98bf061b
KB		 3254 "MSI-X init failed with error %d\n",
3255 num_vectors_enabled);
3256 return num_vectors_enabled;
6c223761
KB		 3257 }
3258
98bf061b 3259 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
061ef06a 3260 ctrl_info->irq_mode = IRQ_MODE_MSIX;
6c223761
KB		 3261 return 0;
3262}
3263
98bf061b
KB		 3264static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3265{
3266 if (ctrl_info->num_msix_vectors_enabled) {
3267 pci_free_irq_vectors(ctrl_info->pci_dev);
3268 ctrl_info->num_msix_vectors_enabled = 0;
3269 }
3270}
3271
6c223761
KB		 3272static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3273{
3274 unsigned int i;
3275 size_t alloc_length;
3276 size_t element_array_length_per_iq;
3277 size_t element_array_length_per_oq;
3278 void *element_array;
dac12fbc 3279 void __iomem *next_queue_index;
6c223761
KB		 3280 void *aligned_pointer;
3281 unsigned int num_inbound_queues;
3282 unsigned int num_outbound_queues;
3283 unsigned int num_queue_indexes;
3284 struct pqi_queue_group *queue_group;
3285
3286 element_array_length_per_iq =
3287 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3288 ctrl_info->num_elements_per_iq;
3289 element_array_length_per_oq =
3290 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3291 ctrl_info->num_elements_per_oq;
3292 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3293 num_outbound_queues = ctrl_info->num_queue_groups;
3294 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3295
3296 aligned_pointer = NULL;
3297
3298 for (i = 0; i < num_inbound_queues; i++) {
3299 aligned_pointer = PTR_ALIGN(aligned_pointer,
3300 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3301 aligned_pointer += element_array_length_per_iq;
3302 }
3303
3304 for (i = 0; i < num_outbound_queues; i++) {
3305 aligned_pointer = PTR_ALIGN(aligned_pointer,
3306 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3307 aligned_pointer += element_array_length_per_oq;
3308 }
3309
3310 aligned_pointer = PTR_ALIGN(aligned_pointer,
3311 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3312 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3313 PQI_EVENT_OQ_ELEMENT_LENGTH;
3314
3315 for (i = 0; i < num_queue_indexes; i++) {
3316 aligned_pointer = PTR_ALIGN(aligned_pointer,
3317 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3318 aligned_pointer += sizeof(pqi_index_t);
3319 }
3320
3321 alloc_length = (size_t)aligned_pointer +
3322 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3323
e1d213bd
KB		 3324 alloc_length += PQI_EXTRA_SGL_MEMORY;
3325
6c223761
KB		 3326 ctrl_info->queue_memory_base =
3327 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3328 alloc_length,
3329 &ctrl_info->queue_memory_base_dma_handle, GFP_KERNEL);
3330
d87d5474 3331 if (!ctrl_info->queue_memory_base)
6c223761 3332 return -ENOMEM;
6c223761
KB		 3333
3334 ctrl_info->queue_memory_length = alloc_length;
3335
3336 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3337 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3338
3339 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3340 queue_group = &ctrl_info->queue_groups[i];
3341 queue_group->iq_element_array[RAID_PATH] = element_array;
3342 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3343 ctrl_info->queue_memory_base_dma_handle +
3344 (element_array - ctrl_info->queue_memory_base);
3345 element_array += element_array_length_per_iq;
3346 element_array = PTR_ALIGN(element_array,
3347 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3348 queue_group->iq_element_array[AIO_PATH] = element_array;
3349 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3350 ctrl_info->queue_memory_base_dma_handle +
3351 (element_array - ctrl_info->queue_memory_base);
3352 element_array += element_array_length_per_iq;
3353 element_array = PTR_ALIGN(element_array,
3354 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3355 }
3356
3357 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3358 queue_group = &ctrl_info->queue_groups[i];
3359 queue_group->oq_element_array = element_array;
3360 queue_group->oq_element_array_bus_addr =
3361 ctrl_info->queue_memory_base_dma_handle +
3362 (element_array - ctrl_info->queue_memory_base);
3363 element_array += element_array_length_per_oq;
3364 element_array = PTR_ALIGN(element_array,
3365 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3366 }
3367
3368 ctrl_info->event_queue.oq_element_array = element_array;
3369 ctrl_info->event_queue.oq_element_array_bus_addr =
3370 ctrl_info->queue_memory_base_dma_handle +
3371 (element_array - ctrl_info->queue_memory_base);
3372 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3373 PQI_EVENT_OQ_ELEMENT_LENGTH;
3374
dac12fbc 3375 next_queue_index = (void __iomem *)PTR_ALIGN(element_array,
6c223761
KB		 3376 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3377
3378 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3379 queue_group = &ctrl_info->queue_groups[i];
3380 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3381 queue_group->iq_ci_bus_addr[RAID_PATH] =
3382 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3383 (next_queue_index -
3384 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3385 next_queue_index += sizeof(pqi_index_t);
3386 next_queue_index = PTR_ALIGN(next_queue_index,
3387 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3388 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3389 queue_group->iq_ci_bus_addr[AIO_PATH] =
3390 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3391 (next_queue_index -
3392 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3393 next_queue_index += sizeof(pqi_index_t);
3394 next_queue_index = PTR_ALIGN(next_queue_index,
3395 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3396 queue_group->oq_pi = next_queue_index;
3397 queue_group->oq_pi_bus_addr =
3398 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3399 (next_queue_index -
3400 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3401 next_queue_index += sizeof(pqi_index_t);
3402 next_queue_index = PTR_ALIGN(next_queue_index,
3403 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3404 }
3405
3406 ctrl_info->event_queue.oq_pi = next_queue_index;
3407 ctrl_info->event_queue.oq_pi_bus_addr =
3408 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3409 (next_queue_index -
3410 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3411
3412 return 0;
3413}
3414
3415static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3416{
3417 unsigned int i;
3418 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3419 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3420
3421 /*
3422 * Initialize the backpointers to the controller structure in
3423 * each operational queue group structure.
3424 */
3425 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3426 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3427
3428 /*
3429 * Assign IDs to all operational queues. Note that the IDs
3430 * assigned to operational IQs are independent of the IDs
3431 * assigned to operational OQs.
3432 */
3433 ctrl_info->event_queue.oq_id = next_oq_id++;
3434 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3435 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3436 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3437 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3438 }
3439
3440 /*
3441 * Assign MSI-X table entry indexes to all queues. Note that the
3442 * interrupt for the event queue is shared with the first queue group.
3443 */
3444 ctrl_info->event_queue.int_msg_num = 0;
3445 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3446 ctrl_info->queue_groups[i].int_msg_num = i;
3447
3448 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3449 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3450 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3451 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3452 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3453 }
3454}
3455
3456static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3457{
3458 size_t alloc_length;
3459 struct pqi_admin_queues_aligned *admin_queues_aligned;
3460 struct pqi_admin_queues *admin_queues;
3461
3462 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3463 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3464
3465 ctrl_info->admin_queue_memory_base =
3466 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3467 alloc_length,
3468 &ctrl_info->admin_queue_memory_base_dma_handle,
3469 GFP_KERNEL);
3470
3471 if (!ctrl_info->admin_queue_memory_base)
3472 return -ENOMEM;
3473
3474 ctrl_info->admin_queue_memory_length = alloc_length;
3475
3476 admin_queues = &ctrl_info->admin_queues;
3477 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3478 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3479 admin_queues->iq_element_array =
3480 &admin_queues_aligned->iq_element_array;
3481 admin_queues->oq_element_array =
3482 &admin_queues_aligned->oq_element_array;
3483 admin_queues->iq_ci = &admin_queues_aligned->iq_ci;
dac12fbc
KB		 3484 admin_queues->oq_pi =
3485 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi;
6c223761
KB		 3486
3487 admin_queues->iq_element_array_bus_addr =
3488 ctrl_info->admin_queue_memory_base_dma_handle +
3489 (admin_queues->iq_element_array -
3490 ctrl_info->admin_queue_memory_base);
3491 admin_queues->oq_element_array_bus_addr =
3492 ctrl_info->admin_queue_memory_base_dma_handle +
3493 (admin_queues->oq_element_array -
3494 ctrl_info->admin_queue_memory_base);
3495 admin_queues->iq_ci_bus_addr =
3496 ctrl_info->admin_queue_memory_base_dma_handle +
3497 ((void *)admin_queues->iq_ci -
3498 ctrl_info->admin_queue_memory_base);
3499 admin_queues->oq_pi_bus_addr =
3500 ctrl_info->admin_queue_memory_base_dma_handle +
dac12fbc
KB		 3501 ((void __iomem *)admin_queues->oq_pi -
3502 (void __iomem *)ctrl_info->admin_queue_memory_base);
6c223761
KB		 3503
3504 return 0;
3505}
3506
3507#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES HZ
3508#define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3509
3510static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3511{
3512 struct pqi_device_registers __iomem *pqi_registers;
3513 struct pqi_admin_queues *admin_queues;
3514 unsigned long timeout;
3515 u8 status;
3516 u32 reg;
3517
3518 pqi_registers = ctrl_info->pqi_registers;
3519 admin_queues = &ctrl_info->admin_queues;
3520
3521 writeq((u64)admin_queues->iq_element_array_bus_addr,
3522 &pqi_registers->admin_iq_element_array_addr);
3523 writeq((u64)admin_queues->oq_element_array_bus_addr,
3524 &pqi_registers->admin_oq_element_array_addr);
3525 writeq((u64)admin_queues->iq_ci_bus_addr,
3526 &pqi_registers->admin_iq_ci_addr);
3527 writeq((u64)admin_queues->oq_pi_bus_addr,
3528 &pqi_registers->admin_oq_pi_addr);
3529
3530 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
3531 (PQI_ADMIN_OQ_NUM_ELEMENTS) << 8 |
3532 (admin_queues->int_msg_num << 16);
3533 writel(reg, &pqi_registers->admin_iq_num_elements);
3534 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3535 &pqi_registers->function_and_status_code);
3536
3537 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3538 while (1) {
3539 status = readb(&pqi_registers->function_and_status_code);
3540 if (status == PQI_STATUS_IDLE)
3541 break;
3542 if (time_after(jiffies, timeout))
3543 return -ETIMEDOUT;
3544 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
3545 }
3546
3547 /*
3548 * The offset registers are not initialized to the correct
3549 * offsets until *after* the create admin queue pair command
3550 * completes successfully.
3551 */
3552 admin_queues->iq_pi = ctrl_info->iomem_base +
3553 PQI_DEVICE_REGISTERS_OFFSET +
3554 readq(&pqi_registers->admin_iq_pi_offset);
3555 admin_queues->oq_ci = ctrl_info->iomem_base +
3556 PQI_DEVICE_REGISTERS_OFFSET +
3557 readq(&pqi_registers->admin_oq_ci_offset);
3558
3559 return 0;
3560}
3561
3562static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
3563 struct pqi_general_admin_request *request)
3564{
3565 struct pqi_admin_queues *admin_queues;
3566 void *next_element;
3567 pqi_index_t iq_pi;
3568
3569 admin_queues = &ctrl_info->admin_queues;
3570 iq_pi = admin_queues->iq_pi_copy;
3571
3572 next_element = admin_queues->iq_element_array +
3573 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
3574
3575 memcpy(next_element, request, sizeof(*request));
3576
3577 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
3578 admin_queues->iq_pi_copy = iq_pi;
3579
3580 /*
3581 * This write notifies the controller that an IU is available to be
3582 * processed.
3583 */
3584 writel(iq_pi, admin_queues->iq_pi);
3585}
3586
13bede67
KB		 3587#define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
3588
6c223761
KB		 3589static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
3590 struct pqi_general_admin_response *response)
3591{
3592 struct pqi_admin_queues *admin_queues;
3593 pqi_index_t oq_pi;
3594 pqi_index_t oq_ci;
3595 unsigned long timeout;
3596
3597 admin_queues = &ctrl_info->admin_queues;
3598 oq_ci = admin_queues->oq_ci_copy;
3599
13bede67 3600 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * HZ) + jiffies;
6c223761
KB		 3601
3602 while (1) {
dac12fbc 3603 oq_pi = readl(admin_queues->oq_pi);
6c223761
KB		 3604 if (oq_pi != oq_ci)
3605 break;
3606 if (time_after(jiffies, timeout)) {
3607 dev_err(&ctrl_info->pci_dev->dev,
3608 "timed out waiting for admin response\n");
3609 return -ETIMEDOUT;
3610 }
13bede67
KB		 3611 if (!sis_is_firmware_running(ctrl_info))
3612 return -ENXIO;
6c223761
KB		 3613 usleep_range(1000, 2000);
3614 }
3615
3616 memcpy(response, admin_queues->oq_element_array +
3617 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
3618
3619 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
3620 admin_queues->oq_ci_copy = oq_ci;
3621 writel(oq_ci, admin_queues->oq_ci);
3622
3623 return 0;
3624}
3625
3626static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
3627 struct pqi_queue_group *queue_group, enum pqi_io_path path,
3628 struct pqi_io_request *io_request)
3629{
3630 struct pqi_io_request *next;
3631 void *next_element;
3632 pqi_index_t iq_pi;
3633 pqi_index_t iq_ci;
3634 size_t iu_length;
3635 unsigned long flags;
3636 unsigned int num_elements_needed;
3637 unsigned int num_elements_to_end_of_queue;
3638 size_t copy_count;
3639 struct pqi_iu_header *request;
3640
3641 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
3642
376fb880
KB		 3643 if (io_request) {
3644 io_request->queue_group = queue_group;
6c223761
KB		 3645 list_add_tail(&io_request->request_list_entry,
3646 &queue_group->request_list[path]);
376fb880 3647 }
6c223761
KB		 3648
3649 iq_pi = queue_group->iq_pi_copy[path];
3650
3651 list_for_each_entry_safe(io_request, next,
3652 &queue_group->request_list[path], request_list_entry) {
3653
3654 request = io_request->iu;
3655
3656 iu_length = get_unaligned_le16(&request->iu_length) +
3657 PQI_REQUEST_HEADER_LENGTH;
3658 num_elements_needed =
3659 DIV_ROUND_UP(iu_length,
3660 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3661
dac12fbc 3662 iq_ci = readl(queue_group->iq_ci[path]);
6c223761
KB		 3663
3664 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
3665 ctrl_info->num_elements_per_iq))
3666 break;
3667
3668 put_unaligned_le16(queue_group->oq_id,
3669 &request->response_queue_id);
3670
3671 next_element = queue_group->iq_element_array[path] +
3672 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3673
3674 num_elements_to_end_of_queue =
3675 ctrl_info->num_elements_per_iq - iq_pi;
3676
3677 if (num_elements_needed <= num_elements_to_end_of_queue) {
3678 memcpy(next_element, request, iu_length);
3679 } else {
3680 copy_count = num_elements_to_end_of_queue *
3681 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
3682 memcpy(next_element, request, copy_count);
3683 memcpy(queue_group->iq_element_array[path],
3684 (u8 *)request + copy_count,
3685 iu_length - copy_count);
3686 }
3687
3688 iq_pi = (iq_pi + num_elements_needed) %
3689 ctrl_info->num_elements_per_iq;
3690
3691 list_del(&io_request->request_list_entry);
3692 }
3693
3694 if (iq_pi != queue_group->iq_pi_copy[path]) {
3695 queue_group->iq_pi_copy[path] = iq_pi;
3696 /*
3697 * This write notifies the controller that one or more IUs are
3698 * available to be processed.
3699 */
3700 writel(iq_pi, queue_group->iq_pi[path]);
3701 }
3702
3703 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
3704}
3705
1f37e992
KB		 3706#define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
3707
3708static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
3709 struct completion *wait)
3710{
3711 int rc;
1f37e992
KB		 3712
3713 while (1) {
3714 if (wait_for_completion_io_timeout(wait,
3715 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) {
3716 rc = 0;
3717 break;
3718 }
3719
3720 pqi_check_ctrl_health(ctrl_info);
3721 if (pqi_ctrl_offline(ctrl_info)) {
3722 rc = -ENXIO;
3723 break;
3724 }
1f37e992
KB		 3725 }
3726
3727 return rc;
3728}
3729
6c223761
KB		 3730static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
3731 void *context)
3732{
3733 struct completion *waiting = context;
3734
3735 complete(waiting);
3736}
3737
26b390ab
KB		 3738static int pqi_process_raid_io_error_synchronous(struct pqi_raid_error_info
3739 *error_info)
3740{
3741 int rc = -EIO;
3742
3743 switch (error_info->data_out_result) {
3744 case PQI_DATA_IN_OUT_GOOD:
3745 if (error_info->status == SAM_STAT_GOOD)
3746 rc = 0;
3747 break;
3748 case PQI_DATA_IN_OUT_UNDERFLOW:
3749 if (error_info->status == SAM_STAT_GOOD ||
3750 error_info->status == SAM_STAT_CHECK_CONDITION)
3751 rc = 0;
3752 break;
3753 case PQI_DATA_IN_OUT_ABORTED:
3754 rc = PQI_CMD_STATUS_ABORTED;
3755 break;
3756 }
3757
3758 return rc;
3759}
3760
6c223761
KB		 3761static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
3762 struct pqi_iu_header *request, unsigned int flags,
3763 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
3764{
957c5ab1 3765 int rc = 0;
6c223761
KB		 3766 struct pqi_io_request *io_request;
3767 unsigned long start_jiffies;
3768 unsigned long msecs_blocked;
3769 size_t iu_length;
957c5ab1 3770 DECLARE_COMPLETION_ONSTACK(wait);
6c223761
KB		 3771
3772 /*
3773 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
3774 * are mutually exclusive.
3775 */
3776
3777 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
3778 if (down_interruptible(&ctrl_info->sync_request_sem))
3779 return -ERESTARTSYS;
3780 } else {
3781 if (timeout_msecs == NO_TIMEOUT) {
3782 down(&ctrl_info->sync_request_sem);
3783 } else {
3784 start_jiffies = jiffies;
3785 if (down_timeout(&ctrl_info->sync_request_sem,
3786 msecs_to_jiffies(timeout_msecs)))
3787 return -ETIMEDOUT;
3788 msecs_blocked =
3789 jiffies_to_msecs(jiffies - start_jiffies);
3790 if (msecs_blocked >= timeout_msecs)
3791 return -ETIMEDOUT;
3792 timeout_msecs -= msecs_blocked;
3793 }
3794 }
3795
7561a7e4
KB		 3796 pqi_ctrl_busy(ctrl_info);
3797 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
3798 if (timeout_msecs == 0) {
957c5ab1 3799 pqi_ctrl_unbusy(ctrl_info);
7561a7e4
KB		 3800 rc = -ETIMEDOUT;
3801 goto out;
3802 }
3803
376fb880 3804 if (pqi_ctrl_offline(ctrl_info)) {
957c5ab1 3805 pqi_ctrl_unbusy(ctrl_info);
376fb880
KB		 3806 rc = -ENXIO;
3807 goto out;
3808 }
3809
6c223761
KB		 3810 io_request = pqi_alloc_io_request(ctrl_info);
3811
3812 put_unaligned_le16(io_request->index,
3813 &(((struct pqi_raid_path_request *)request)->request_id));
3814
3815 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
3816 ((struct pqi_raid_path_request *)request)->error_index =
3817 ((struct pqi_raid_path_request *)request)->request_id;
3818
3819 iu_length = get_unaligned_le16(&request->iu_length) +
3820 PQI_REQUEST_HEADER_LENGTH;
3821 memcpy(io_request->iu, request, iu_length);
3822
957c5ab1
KB		 3823 io_request->io_complete_callback = pqi_raid_synchronous_complete;
3824 io_request->context = &wait;
3825
3826 pqi_start_io(ctrl_info,
3827 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
3828 io_request);
3829
3830 pqi_ctrl_unbusy(ctrl_info);
3831
3832 if (timeout_msecs == NO_TIMEOUT) {
3833 pqi_wait_for_completion_io(ctrl_info, &wait);
3834 } else {
3835 if (!wait_for_completion_io_timeout(&wait,
3836 msecs_to_jiffies(timeout_msecs))) {
3837 dev_warn(&ctrl_info->pci_dev->dev,
3838 "command timed out\n");
3839 rc = -ETIMEDOUT;
3840 }
3841 }
6c223761
KB		 3842
3843 if (error_info) {
3844 if (io_request->error_info)
3845 memcpy(error_info, io_request->error_info,
3846 sizeof(*error_info));
3847 else
3848 memset(error_info, 0, sizeof(*error_info));
3849 } else if (rc == 0 && io_request->error_info) {
26b390ab
KB		 3850 rc = pqi_process_raid_io_error_synchronous(
3851 io_request->error_info);
6c223761
KB		 3852 }
3853
3854 pqi_free_io_request(io_request);
3855
7561a7e4 3856out:
6c223761
KB		 3857 up(&ctrl_info->sync_request_sem);
3858
3859 return rc;
3860}
3861
3862static int pqi_validate_admin_response(
3863 struct pqi_general_admin_response *response, u8 expected_function_code)
3864{
3865 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
3866 return -EINVAL;
3867
3868 if (get_unaligned_le16(&response->header.iu_length) !=
3869 PQI_GENERAL_ADMIN_IU_LENGTH)
3870 return -EINVAL;
3871
3872 if (response->function_code != expected_function_code)
3873 return -EINVAL;
3874
3875 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
3876 return -EINVAL;
3877
3878 return 0;
3879}
3880
3881static int pqi_submit_admin_request_synchronous(
3882 struct pqi_ctrl_info *ctrl_info,
3883 struct pqi_general_admin_request *request,
3884 struct pqi_general_admin_response *response)
3885{
3886 int rc;
3887
3888 pqi_submit_admin_request(ctrl_info, request);
3889
3890 rc = pqi_poll_for_admin_response(ctrl_info, response);
3891
3892 if (rc == 0)
3893 rc = pqi_validate_admin_response(response,
3894 request->function_code);
3895
3896 return rc;
3897}
3898
3899static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
3900{
3901 int rc;
3902 struct pqi_general_admin_request request;
3903 struct pqi_general_admin_response response;
3904 struct pqi_device_capability *capability;
3905 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
3906
3907 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
3908 if (!capability)
3909 return -ENOMEM;
3910
3911 memset(&request, 0, sizeof(request));
3912
3913 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3914 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3915 &request.header.iu_length);
3916 request.function_code =
3917 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
3918 put_unaligned_le32(sizeof(*capability),
3919 &request.data.report_device_capability.buffer_length);
3920
3921 rc = pqi_map_single(ctrl_info->pci_dev,
3922 &request.data.report_device_capability.sg_descriptor,
3923 capability, sizeof(*capability),
6917a9cc 3924 DMA_FROM_DEVICE);
6c223761
KB		 3925 if (rc)
3926 goto out;
3927
3928 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3929 &response);
3930
3931 pqi_pci_unmap(ctrl_info->pci_dev,
3932 &request.data.report_device_capability.sg_descriptor, 1,
6917a9cc 3933 DMA_FROM_DEVICE);
6c223761
KB		 3934
3935 if (rc)
3936 goto out;
3937
3938 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
3939 rc = -EIO;
3940 goto out;
3941 }
3942
3943 ctrl_info->max_inbound_queues =
3944 get_unaligned_le16(&capability->max_inbound_queues);
3945 ctrl_info->max_elements_per_iq =
3946 get_unaligned_le16(&capability->max_elements_per_iq);
3947 ctrl_info->max_iq_element_length =
3948 get_unaligned_le16(&capability->max_iq_element_length)
3949 * 16;
3950 ctrl_info->max_outbound_queues =
3951 get_unaligned_le16(&capability->max_outbound_queues);
3952 ctrl_info->max_elements_per_oq =
3953 get_unaligned_le16(&capability->max_elements_per_oq);
3954 ctrl_info->max_oq_element_length =
3955 get_unaligned_le16(&capability->max_oq_element_length)
3956 * 16;
3957
3958 sop_iu_layer_descriptor =
3959 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
3960
3961 ctrl_info->max_inbound_iu_length_per_firmware =
3962 get_unaligned_le16(
3963 &sop_iu_layer_descriptor->max_inbound_iu_length);
3964 ctrl_info->inbound_spanning_supported =
3965 sop_iu_layer_descriptor->inbound_spanning_supported;
3966 ctrl_info->outbound_spanning_supported =
3967 sop_iu_layer_descriptor->outbound_spanning_supported;
3968
3969out:
3970 kfree(capability);
3971
3972 return rc;
3973}
3974
3975static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
3976{
3977 if (ctrl_info->max_iq_element_length <
3978 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
3979 dev_err(&ctrl_info->pci_dev->dev,
3980 "max. inbound queue element length of %d is less than the required length of %d\n",
3981 ctrl_info->max_iq_element_length,
3982 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3983 return -EINVAL;
3984 }
3985
3986 if (ctrl_info->max_oq_element_length <
3987 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
3988 dev_err(&ctrl_info->pci_dev->dev,
3989 "max. outbound queue element length of %d is less than the required length of %d\n",
3990 ctrl_info->max_oq_element_length,
3991 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
3992 return -EINVAL;
3993 }
3994
3995 if (ctrl_info->max_inbound_iu_length_per_firmware <
3996 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
3997 dev_err(&ctrl_info->pci_dev->dev,
3998 "max. inbound IU length of %u is less than the min. required length of %d\n",
3999 ctrl_info->max_inbound_iu_length_per_firmware,
4000 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4001 return -EINVAL;
4002 }
4003
77668f41
KB		 4004 if (!ctrl_info->inbound_spanning_supported) {
4005 dev_err(&ctrl_info->pci_dev->dev,
4006 "the controller does not support inbound spanning\n");
4007 return -EINVAL;
4008 }
4009
4010 if (ctrl_info->outbound_spanning_supported) {
4011 dev_err(&ctrl_info->pci_dev->dev,
4012 "the controller supports outbound spanning but this driver does not\n");
4013 return -EINVAL;
4014 }
4015
6c223761
KB		 4016 return 0;
4017}
4018
6c223761
KB		 4019static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
4020{
4021 int rc;
4022 struct pqi_event_queue *event_queue;
4023 struct pqi_general_admin_request request;
4024 struct pqi_general_admin_response response;
4025
4026 event_queue = &ctrl_info->event_queue;
4027
4028 /*
4029 * Create OQ (Outbound Queue - device to host queue) to dedicate
4030 * to events.
4031 */
4032 memset(&request, 0, sizeof(request));
4033 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4034 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4035 &request.header.iu_length);
4036 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4037 put_unaligned_le16(event_queue->oq_id,
4038 &request.data.create_operational_oq.queue_id);
4039 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
4040 &request.data.create_operational_oq.element_array_addr);
4041 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
4042 &request.data.create_operational_oq.pi_addr);
4043 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
4044 &request.data.create_operational_oq.num_elements);
4045 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
4046 &request.data.create_operational_oq.element_length);
4047 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4048 put_unaligned_le16(event_queue->int_msg_num,
4049 &request.data.create_operational_oq.int_msg_num);
4050
4051 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4052 &response);
4053 if (rc)
4054 return rc;
4055
4056 event_queue->oq_ci = ctrl_info->iomem_base +
4057 PQI_DEVICE_REGISTERS_OFFSET +
4058 get_unaligned_le64(
4059 &response.data.create_operational_oq.oq_ci_offset);
4060
4061 return 0;
4062}
4063
061ef06a
KB		 4064static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
4065 unsigned int group_number)
6c223761 4066{
6c223761
KB		 4067 int rc;
4068 struct pqi_queue_group *queue_group;
4069 struct pqi_general_admin_request request;
4070 struct pqi_general_admin_response response;
4071
061ef06a 4072 queue_group = &ctrl_info->queue_groups[group_number];
6c223761
KB		 4073
4074 /*
4075 * Create IQ (Inbound Queue - host to device queue) for
4076 * RAID path.
4077 */
4078 memset(&request, 0, sizeof(request));
4079 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4080 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4081 &request.header.iu_length);
4082 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4083 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
4084 &request.data.create_operational_iq.queue_id);
4085 put_unaligned_le64(
4086 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
4087 &request.data.create_operational_iq.element_array_addr);
4088 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
4089 &request.data.create_operational_iq.ci_addr);
4090 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4091 &request.data.create_operational_iq.num_elements);
4092 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4093 &request.data.create_operational_iq.element_length);
4094 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4095
4096 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4097 &response);
4098 if (rc) {
4099 dev_err(&ctrl_info->pci_dev->dev,
4100 "error creating inbound RAID queue\n");
4101 return rc;
4102 }
4103
4104 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
4105 PQI_DEVICE_REGISTERS_OFFSET +
4106 get_unaligned_le64(
4107 &response.data.create_operational_iq.iq_pi_offset);
4108
4109 /*
4110 * Create IQ (Inbound Queue - host to device queue) for
4111 * Advanced I/O (AIO) path.
4112 */
4113 memset(&request, 0, sizeof(request));
4114 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4115 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4116 &request.header.iu_length);
4117 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4118 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4119 &request.data.create_operational_iq.queue_id);
4120 put_unaligned_le64((u64)queue_group->
4121 iq_element_array_bus_addr[AIO_PATH],
4122 &request.data.create_operational_iq.element_array_addr);
4123 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4124 &request.data.create_operational_iq.ci_addr);
4125 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4126 &request.data.create_operational_iq.num_elements);
4127 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4128 &request.data.create_operational_iq.element_length);
4129 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4130
4131 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4132 &response);
4133 if (rc) {
4134 dev_err(&ctrl_info->pci_dev->dev,
4135 "error creating inbound AIO queue\n");
339faa81 4136 return rc;
6c223761
KB		 4137 }
4138
4139 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4140 PQI_DEVICE_REGISTERS_OFFSET +
4141 get_unaligned_le64(
4142 &response.data.create_operational_iq.iq_pi_offset);
4143
4144 /*
4145 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4146 * assumed to be for RAID path I/O unless we change the queue's
4147 * property.
4148 */
4149 memset(&request, 0, sizeof(request));
4150 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4151 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4152 &request.header.iu_length);
4153 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4154 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4155 &request.data.change_operational_iq_properties.queue_id);
4156 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4157 &request.data.change_operational_iq_properties.vendor_specific);
4158
4159 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4160 &response);
4161 if (rc) {
4162 dev_err(&ctrl_info->pci_dev->dev,
4163 "error changing queue property\n");
339faa81 4164 return rc;
6c223761
KB		 4165 }
4166
4167 /*
4168 * Create OQ (Outbound Queue - device to host queue).
4169 */
4170 memset(&request, 0, sizeof(request));
4171 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4172 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4173 &request.header.iu_length);
4174 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4175 put_unaligned_le16(queue_group->oq_id,
4176 &request.data.create_operational_oq.queue_id);
4177 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4178 &request.data.create_operational_oq.element_array_addr);
4179 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4180 &request.data.create_operational_oq.pi_addr);
4181 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4182 &request.data.create_operational_oq.num_elements);
4183 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4184 &request.data.create_operational_oq.element_length);
4185 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4186 put_unaligned_le16(queue_group->int_msg_num,
4187 &request.data.create_operational_oq.int_msg_num);
4188
4189 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4190 &response);
4191 if (rc) {
4192 dev_err(&ctrl_info->pci_dev->dev,
4193 "error creating outbound queue\n");
339faa81 4194 return rc;
6c223761
KB		 4195 }
4196
4197 queue_group->oq_ci = ctrl_info->iomem_base +
4198 PQI_DEVICE_REGISTERS_OFFSET +
4199 get_unaligned_le64(
4200 &response.data.create_operational_oq.oq_ci_offset);
4201
6c223761 4202 return 0;
6c223761
KB		 4203}
4204
4205static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4206{
4207 int rc;
4208 unsigned int i;
4209
4210 rc = pqi_create_event_queue(ctrl_info);
4211 if (rc) {
4212 dev_err(&ctrl_info->pci_dev->dev,
4213 "error creating event queue\n");
4214 return rc;
4215 }
4216
4217 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
061ef06a 4218 rc = pqi_create_queue_group(ctrl_info, i);
6c223761
KB		 4219 if (rc) {
4220 dev_err(&ctrl_info->pci_dev->dev,
4221 "error creating queue group number %u/%u\n",
4222 i, ctrl_info->num_queue_groups);
4223 return rc;
4224 }
4225 }
4226
4227 return 0;
4228}
4229
4230#define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4231 (offsetof(struct pqi_event_config, descriptors) + \
4232 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4233
6a50d6ad
KB		 4234static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4235 bool enable_events)
6c223761
KB		 4236{
4237 int rc;
4238 unsigned int i;
4239 struct pqi_event_config *event_config;
6a50d6ad 4240 struct pqi_event_descriptor *event_descriptor;
6c223761
KB		 4241 struct pqi_general_management_request request;
4242
4243 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4244 GFP_KERNEL);
4245 if (!event_config)
4246 return -ENOMEM;
4247
4248 memset(&request, 0, sizeof(request));
4249
4250 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4251 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4252 data.report_event_configuration.sg_descriptors[1]) -
4253 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4254 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4255 &request.data.report_event_configuration.buffer_length);
4256
4257 rc = pqi_map_single(ctrl_info->pci_dev,
4258 request.data.report_event_configuration.sg_descriptors,
4259 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
6917a9cc 4260 DMA_FROM_DEVICE);
6c223761
KB		 4261 if (rc)
4262 goto out;
4263
4264 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4265 0, NULL, NO_TIMEOUT);
4266
4267 pqi_pci_unmap(ctrl_info->pci_dev,
4268 request.data.report_event_configuration.sg_descriptors, 1,
6917a9cc 4269 DMA_FROM_DEVICE);
6c223761
KB		 4270
4271 if (rc)
4272 goto out;
4273
6a50d6ad
KB		 4274 for (i = 0; i < event_config->num_event_descriptors; i++) {
4275 event_descriptor = &event_config->descriptors[i];
4276 if (enable_events &&
4277 pqi_is_supported_event(event_descriptor->event_type))
4278 put_unaligned_le16(ctrl_info->event_queue.oq_id,
4279 &event_descriptor->oq_id);
4280 else
4281 put_unaligned_le16(0, &event_descriptor->oq_id);
4282 }
6c223761
KB		 4283
4284 memset(&request, 0, sizeof(request));
4285
4286 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4287 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4288 data.report_event_configuration.sg_descriptors[1]) -
4289 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4290 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4291 &request.data.report_event_configuration.buffer_length);
4292
4293 rc = pqi_map_single(ctrl_info->pci_dev,
4294 request.data.report_event_configuration.sg_descriptors,
4295 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
6917a9cc 4296 DMA_TO_DEVICE);
6c223761
KB		 4297 if (rc)
4298 goto out;
4299
4300 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4301 NULL, NO_TIMEOUT);
4302
4303 pqi_pci_unmap(ctrl_info->pci_dev,
4304 request.data.report_event_configuration.sg_descriptors, 1,
6917a9cc 4305 DMA_TO_DEVICE);
6c223761
KB		 4306
4307out:
4308 kfree(event_config);
4309
4310 return rc;
4311}
4312
6a50d6ad
KB		 4313static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4314{
4315 return pqi_configure_events(ctrl_info, true);
4316}
4317
4318static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4319{
4320 return pqi_configure_events(ctrl_info, false);
4321}
4322
6c223761
KB		 4323static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4324{
4325 unsigned int i;
4326 struct device *dev;
4327 size_t sg_chain_buffer_length;
4328 struct pqi_io_request *io_request;
4329
4330 if (!ctrl_info->io_request_pool)
4331 return;
4332
4333 dev = &ctrl_info->pci_dev->dev;
4334 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4335 io_request = ctrl_info->io_request_pool;
4336
4337 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4338 kfree(io_request->iu);
4339 if (!io_request->sg_chain_buffer)
4340 break;
4341 dma_free_coherent(dev, sg_chain_buffer_length,
4342 io_request->sg_chain_buffer,
4343 io_request->sg_chain_buffer_dma_handle);
4344 io_request++;
4345 }
4346
4347 kfree(ctrl_info->io_request_pool);
4348 ctrl_info->io_request_pool = NULL;
4349}
4350
4351static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4352{
4353 ctrl_info->error_buffer = dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
4354 ctrl_info->error_buffer_length,
4355 &ctrl_info->error_buffer_dma_handle, GFP_KERNEL);
4356
4357 if (!ctrl_info->error_buffer)
4358 return -ENOMEM;
4359
4360 return 0;
4361}
4362
4363static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4364{
4365 unsigned int i;
4366 void *sg_chain_buffer;
4367 size_t sg_chain_buffer_length;
4368 dma_addr_t sg_chain_buffer_dma_handle;
4369 struct device *dev;
4370 struct pqi_io_request *io_request;
4371
6396bb22
KC		 4372 ctrl_info->io_request_pool =
4373 kcalloc(ctrl_info->max_io_slots,
4374 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
6c223761
KB		 4375
4376 if (!ctrl_info->io_request_pool) {
4377 dev_err(&ctrl_info->pci_dev->dev,
4378 "failed to allocate I/O request pool\n");
4379 goto error;
4380 }
4381
4382 dev = &ctrl_info->pci_dev->dev;
4383 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4384 io_request = ctrl_info->io_request_pool;
4385
4386 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4387 io_request->iu =
4388 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
4389
4390 if (!io_request->iu) {
4391 dev_err(&ctrl_info->pci_dev->dev,
4392 "failed to allocate IU buffers\n");
4393 goto error;
4394 }
4395
4396 sg_chain_buffer = dma_alloc_coherent(dev,
4397 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4398 GFP_KERNEL);
4399
4400 if (!sg_chain_buffer) {
4401 dev_err(&ctrl_info->pci_dev->dev,
4402 "failed to allocate PQI scatter-gather chain buffers\n");
4403 goto error;
4404 }
4405
4406 io_request->index = i;
4407 io_request->sg_chain_buffer = sg_chain_buffer;
4408 io_request->sg_chain_buffer_dma_handle =
4409 sg_chain_buffer_dma_handle;
4410 io_request++;
4411 }
4412
4413 return 0;
4414
4415error:
4416 pqi_free_all_io_requests(ctrl_info);
4417
4418 return -ENOMEM;
4419}
4420
4421/*
4422 * Calculate required resources that are sized based on max. outstanding
4423 * requests and max. transfer size.
4424 */
4425
4426static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4427{
4428 u32 max_transfer_size;
4429 u32 max_sg_entries;
4430
4431 ctrl_info->scsi_ml_can_queue =
4432 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4433 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4434
4435 ctrl_info->error_buffer_length =
4436 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4437
d727a776
KB		 4438 if (reset_devices)
4439 max_transfer_size = min(ctrl_info->max_transfer_size,
4440 PQI_MAX_TRANSFER_SIZE_KDUMP);
4441 else
4442 max_transfer_size = min(ctrl_info->max_transfer_size,
4443 PQI_MAX_TRANSFER_SIZE);
6c223761
KB		 4444
4445 max_sg_entries = max_transfer_size / PAGE_SIZE;
4446
4447 /* +1 to cover when the buffer is not page-aligned. */
4448 max_sg_entries++;
4449
4450 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4451
4452 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4453
4454 ctrl_info->sg_chain_buffer_length =
e1d213bd
KB		 4455 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4456 PQI_EXTRA_SGL_MEMORY;
6c223761
KB		 4457 ctrl_info->sg_tablesize = max_sg_entries;
4458 ctrl_info->max_sectors = max_transfer_size / 512;
4459}
4460
4461static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4462{
6c223761
KB		 4463 int num_queue_groups;
4464 u16 num_elements_per_iq;
4465 u16 num_elements_per_oq;
4466
d727a776
KB		 4467 if (reset_devices) {
4468 num_queue_groups = 1;
4469 } else {
4470 int num_cpus;
4471 int max_queue_groups;
4472
4473 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4474 ctrl_info->max_outbound_queues - 1);
4475 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
6c223761 4476
d727a776
KB		 4477 num_cpus = num_online_cpus();
4478 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4479 num_queue_groups = min(num_queue_groups, max_queue_groups);
4480 }
6c223761
KB		 4481
4482 ctrl_info->num_queue_groups = num_queue_groups;
061ef06a 4483 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
6c223761 4484
77668f41
KB		 4485 /*
4486 * Make sure that the max. inbound IU length is an even multiple
4487 * of our inbound element length.
4488 */
4489 ctrl_info->max_inbound_iu_length =
4490 (ctrl_info->max_inbound_iu_length_per_firmware /
4491 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4492 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
6c223761
KB		 4493
4494 num_elements_per_iq =
4495 (ctrl_info->max_inbound_iu_length /
4496 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4497
4498 /* Add one because one element in each queue is unusable. */
4499 num_elements_per_iq++;
4500
4501 num_elements_per_iq = min(num_elements_per_iq,
4502 ctrl_info->max_elements_per_iq);
4503
4504 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4505 num_elements_per_oq = min(num_elements_per_oq,
4506 ctrl_info->max_elements_per_oq);
4507
4508 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4509 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4510
4511 ctrl_info->max_sg_per_iu =
4512 ((ctrl_info->max_inbound_iu_length -
4513 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4514 sizeof(struct pqi_sg_descriptor)) +
4515 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
4516}
4517
4518static inline void pqi_set_sg_descriptor(
4519 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg)
4520{
4521 u64 address = (u64)sg_dma_address(sg);
4522 unsigned int length = sg_dma_len(sg);
4523
4524 put_unaligned_le64(address, &sg_descriptor->address);
4525 put_unaligned_le32(length, &sg_descriptor->length);
4526 put_unaligned_le32(0, &sg_descriptor->flags);
4527}
4528
4529static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
4530 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
4531 struct pqi_io_request *io_request)
4532{
4533 int i;
4534 u16 iu_length;
4535 int sg_count;
4536 bool chained;
4537 unsigned int num_sg_in_iu;
4538 unsigned int max_sg_per_iu;
4539 struct scatterlist *sg;
4540 struct pqi_sg_descriptor *sg_descriptor;
4541
4542 sg_count = scsi_dma_map(scmd);
4543 if (sg_count < 0)
4544 return sg_count;
4545
4546 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
4547 PQI_REQUEST_HEADER_LENGTH;
4548
4549 if (sg_count == 0)
4550 goto out;
4551
4552 sg = scsi_sglist(scmd);
4553 sg_descriptor = request->sg_descriptors;
4554 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4555 chained = false;
4556 num_sg_in_iu = 0;
4557 i = 0;
4558
4559 while (1) {
4560 pqi_set_sg_descriptor(sg_descriptor, sg);
4561 if (!chained)
4562 num_sg_in_iu++;
4563 i++;
4564 if (i == sg_count)
4565 break;
4566 sg_descriptor++;
4567 if (i == max_sg_per_iu) {
4568 put_unaligned_le64(
4569 (u64)io_request->sg_chain_buffer_dma_handle,
4570 &sg_descriptor->address);
4571 put_unaligned_le32((sg_count - num_sg_in_iu)
4572 * sizeof(*sg_descriptor),
4573 &sg_descriptor->length);
4574 put_unaligned_le32(CISS_SG_CHAIN,
4575 &sg_descriptor->flags);
4576 chained = true;
4577 num_sg_in_iu++;
4578 sg_descriptor = io_request->sg_chain_buffer;
4579 }
4580 sg = sg_next(sg);
4581 }
4582
4583 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4584 request->partial = chained;
4585 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4586
4587out:
4588 put_unaligned_le16(iu_length, &request->header.iu_length);
4589
4590 return 0;
4591}
4592
4593static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
4594 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
4595 struct pqi_io_request *io_request)
4596{
4597 int i;
4598 u16 iu_length;
4599 int sg_count;
a60eec02
KB		 4600 bool chained;
4601 unsigned int num_sg_in_iu;
4602 unsigned int max_sg_per_iu;
6c223761
KB		 4603 struct scatterlist *sg;
4604 struct pqi_sg_descriptor *sg_descriptor;
4605
4606 sg_count = scsi_dma_map(scmd);
4607 if (sg_count < 0)
4608 return sg_count;
a60eec02
KB		 4609
4610 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
4611 PQI_REQUEST_HEADER_LENGTH;
4612 num_sg_in_iu = 0;
4613
6c223761
KB		 4614 if (sg_count == 0)
4615 goto out;
4616
a60eec02
KB		 4617 sg = scsi_sglist(scmd);
4618 sg_descriptor = request->sg_descriptors;
4619 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4620 chained = false;
4621 i = 0;
4622
4623 while (1) {
4624 pqi_set_sg_descriptor(sg_descriptor, sg);
4625 if (!chained)
4626 num_sg_in_iu++;
4627 i++;
4628 if (i == sg_count)
4629 break;
4630 sg_descriptor++;
4631 if (i == max_sg_per_iu) {
4632 put_unaligned_le64(
4633 (u64)io_request->sg_chain_buffer_dma_handle,
4634 &sg_descriptor->address);
4635 put_unaligned_le32((sg_count - num_sg_in_iu)
4636 * sizeof(*sg_descriptor),
4637 &sg_descriptor->length);
4638 put_unaligned_le32(CISS_SG_CHAIN,
4639 &sg_descriptor->flags);
4640 chained = true;
4641 num_sg_in_iu++;
4642 sg_descriptor = io_request->sg_chain_buffer;
6c223761 4643 }
a60eec02 4644 sg = sg_next(sg);
6c223761
KB		 4645 }
4646
a60eec02
KB		 4647 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4648 request->partial = chained;
6c223761 4649 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
a60eec02
KB		 4650
4651out:
6c223761
KB		 4652 put_unaligned_le16(iu_length, &request->header.iu_length);
4653 request->num_sg_descriptors = num_sg_in_iu;
4654
4655 return 0;
4656}
4657
4658static void pqi_raid_io_complete(struct pqi_io_request *io_request,
4659 void *context)
4660{
4661 struct scsi_cmnd *scmd;
4662
4663 scmd = io_request->scmd;
4664 pqi_free_io_request(io_request);
4665 scsi_dma_unmap(scmd);
4666 pqi_scsi_done(scmd);
4667}
4668
376fb880
KB		 4669static int pqi_raid_submit_scsi_cmd_with_io_request(
4670 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
6c223761
KB		 4671 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4672 struct pqi_queue_group *queue_group)
4673{
4674 int rc;
4675 size_t cdb_length;
6c223761
KB		 4676 struct pqi_raid_path_request *request;
4677
6c223761
KB		 4678 io_request->io_complete_callback = pqi_raid_io_complete;
4679 io_request->scmd = scmd;
4680
6c223761
KB		 4681 request = io_request->iu;
4682 memset(request, 0,
4683 offsetof(struct pqi_raid_path_request, sg_descriptors));
4684
4685 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
4686 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4687 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4688 put_unaligned_le16(io_request->index, &request->request_id);
4689 request->error_index = request->request_id;
4690 memcpy(request->lun_number, device->scsi3addr,
4691 sizeof(request->lun_number));
4692
4693 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
4694 memcpy(request->cdb, scmd->cmnd, cdb_length);
4695
4696 switch (cdb_length) {
4697 case 6:
4698 case 10:
4699 case 12:
4700 case 16:
4701 /* No bytes in the Additional CDB bytes field */
4702 request->additional_cdb_bytes_usage =
4703 SOP_ADDITIONAL_CDB_BYTES_0;
4704 break;
4705 case 20:
4706 /* 4 bytes in the Additional cdb field */
4707 request->additional_cdb_bytes_usage =
4708 SOP_ADDITIONAL_CDB_BYTES_4;
4709 break;
4710 case 24:
4711 /* 8 bytes in the Additional cdb field */
4712 request->additional_cdb_bytes_usage =
4713 SOP_ADDITIONAL_CDB_BYTES_8;
4714 break;
4715 case 28:
4716 /* 12 bytes in the Additional cdb field */
4717 request->additional_cdb_bytes_usage =
4718 SOP_ADDITIONAL_CDB_BYTES_12;
4719 break;
4720 case 32:
4721 default:
4722 /* 16 bytes in the Additional cdb field */
4723 request->additional_cdb_bytes_usage =
4724 SOP_ADDITIONAL_CDB_BYTES_16;
4725 break;
4726 }
4727
4728 switch (scmd->sc_data_direction) {
4729 case DMA_TO_DEVICE:
4730 request->data_direction = SOP_READ_FLAG;
4731 break;
4732 case DMA_FROM_DEVICE:
4733 request->data_direction = SOP_WRITE_FLAG;
4734 break;
4735 case DMA_NONE:
4736 request->data_direction = SOP_NO_DIRECTION_FLAG;
4737 break;
4738 case DMA_BIDIRECTIONAL:
4739 request->data_direction = SOP_BIDIRECTIONAL;
4740 break;
4741 default:
4742 dev_err(&ctrl_info->pci_dev->dev,
4743 "unknown data direction: %d\n",
4744 scmd->sc_data_direction);
6c223761
KB		 4745 break;
4746 }
4747
4748 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
4749 if (rc) {
4750 pqi_free_io_request(io_request);
4751 return SCSI_MLQUEUE_HOST_BUSY;
4752 }
4753
4754 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
4755
4756 return 0;
4757}
4758
376fb880
KB		 4759static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
4760 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4761 struct pqi_queue_group *queue_group)
4762{
4763 struct pqi_io_request *io_request;
4764
4765 io_request = pqi_alloc_io_request(ctrl_info);
4766
4767 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
4768 device, scmd, queue_group);
4769}
4770
4771static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
4772{
4773 if (!pqi_ctrl_blocked(ctrl_info))
4774 schedule_work(&ctrl_info->raid_bypass_retry_work);
4775}
4776
4777static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
4778{
4779 struct scsi_cmnd *scmd;
03b288cf 4780 struct pqi_scsi_dev *device;
376fb880
KB		 4781 struct pqi_ctrl_info *ctrl_info;
4782
4783 if (!io_request->raid_bypass)
4784 return false;
4785
4786 scmd = io_request->scmd;
4787 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
4788 return false;
4789 if (host_byte(scmd->result) == DID_NO_CONNECT)
4790 return false;
4791
03b288cf
KB		 4792 device = scmd->device->hostdata;
4793 if (pqi_device_offline(device))
4794 return false;
4795
376fb880
KB		 4796 ctrl_info = shost_to_hba(scmd->device->host);
4797 if (pqi_ctrl_offline(ctrl_info))
4798 return false;
4799
4800 return true;
4801}
4802
4803static inline void pqi_add_to_raid_bypass_retry_list(
4804 struct pqi_ctrl_info *ctrl_info,
4805 struct pqi_io_request *io_request, bool at_head)
4806{
4807 unsigned long flags;
4808
4809 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4810 if (at_head)
4811 list_add(&io_request->request_list_entry,
4812 &ctrl_info->raid_bypass_retry_list);
4813 else
4814 list_add_tail(&io_request->request_list_entry,
4815 &ctrl_info->raid_bypass_retry_list);
4816 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4817}
4818
4819static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
4820 void *context)
4821{
4822 struct scsi_cmnd *scmd;
4823
4824 scmd = io_request->scmd;
4825 pqi_free_io_request(io_request);
4826 pqi_scsi_done(scmd);
4827}
4828
4829static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
4830{
4831 struct scsi_cmnd *scmd;
4832 struct pqi_ctrl_info *ctrl_info;
4833
4834 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
4835 scmd = io_request->scmd;
4836 scmd->result = 0;
4837 ctrl_info = shost_to_hba(scmd->device->host);
4838
4839 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
4840 pqi_schedule_bypass_retry(ctrl_info);
4841}
4842
4843static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
4844{
4845 struct scsi_cmnd *scmd;
4846 struct pqi_scsi_dev *device;
4847 struct pqi_ctrl_info *ctrl_info;
4848 struct pqi_queue_group *queue_group;
4849
4850 scmd = io_request->scmd;
4851 device = scmd->device->hostdata;
4852 if (pqi_device_in_reset(device)) {
4853 pqi_free_io_request(io_request);
4854 set_host_byte(scmd, DID_RESET);
4855 pqi_scsi_done(scmd);
4856 return 0;
4857 }
4858
4859 ctrl_info = shost_to_hba(scmd->device->host);
4860 queue_group = io_request->queue_group;
4861
4862 pqi_reinit_io_request(io_request);
4863
4864 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
4865 device, scmd, queue_group);
4866}
4867
4868static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
4869 struct pqi_ctrl_info *ctrl_info)
4870{
4871 unsigned long flags;
4872 struct pqi_io_request *io_request;
4873
4874 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4875 io_request = list_first_entry_or_null(
4876 &ctrl_info->raid_bypass_retry_list,
4877 struct pqi_io_request, request_list_entry);
4878 if (io_request)
4879 list_del(&io_request->request_list_entry);
4880 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4881
4882 return io_request;
4883}
4884
4885static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
4886{
4887 int rc;
4888 struct pqi_io_request *io_request;
4889
4890 pqi_ctrl_busy(ctrl_info);
4891
4892 while (1) {
4893 if (pqi_ctrl_blocked(ctrl_info))
4894 break;
4895 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
4896 if (!io_request)
4897 break;
4898 rc = pqi_retry_raid_bypass(io_request);
4899 if (rc) {
4900 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
4901 true);
4902 pqi_schedule_bypass_retry(ctrl_info);
4903 break;
4904 }
4905 }
4906
4907 pqi_ctrl_unbusy(ctrl_info);
4908}
4909
4910static void pqi_raid_bypass_retry_worker(struct work_struct *work)
4911{
4912 struct pqi_ctrl_info *ctrl_info;
4913
4914 ctrl_info = container_of(work, struct pqi_ctrl_info,
4915 raid_bypass_retry_work);
4916 pqi_retry_raid_bypass_requests(ctrl_info);
4917}
4918
5f310425
KB		 4919static void pqi_clear_all_queued_raid_bypass_retries(
4920 struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 4921{
4922 unsigned long flags;
376fb880
KB		 4923
4924 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5f310425 4925 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
376fb880
KB		 4926 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4927}
4928
6c223761
KB		 4929static void pqi_aio_io_complete(struct pqi_io_request *io_request,
4930 void *context)
4931{
4932 struct scsi_cmnd *scmd;
4933
4934 scmd = io_request->scmd;
4935 scsi_dma_unmap(scmd);
4936 if (io_request->status == -EAGAIN)
4937 set_host_byte(scmd, DID_IMM_RETRY);
376fb880
KB		 4938 else if (pqi_raid_bypass_retry_needed(io_request)) {
4939 pqi_queue_raid_bypass_retry(io_request);
4940 return;
4941 }
6c223761
KB		 4942 pqi_free_io_request(io_request);
4943 pqi_scsi_done(scmd);
4944}
4945
4946static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
4947 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4948 struct pqi_queue_group *queue_group)
4949{
4950 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
376fb880 4951 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
6c223761
KB		 4952}
4953
4954static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
4955 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
4956 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 4957 struct pqi_encryption_info *encryption_info, bool raid_bypass)
6c223761
KB		 4958{
4959 int rc;
4960 struct pqi_io_request *io_request;
4961 struct pqi_aio_path_request *request;
4962
4963 io_request = pqi_alloc_io_request(ctrl_info);
4964 io_request->io_complete_callback = pqi_aio_io_complete;
4965 io_request->scmd = scmd;
376fb880 4966 io_request->raid_bypass = raid_bypass;
6c223761
KB		 4967
4968 request = io_request->iu;
4969 memset(request, 0,
4970 offsetof(struct pqi_raid_path_request, sg_descriptors));
4971
4972 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
4973 put_unaligned_le32(aio_handle, &request->nexus_id);
4974 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4975 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4976 put_unaligned_le16(io_request->index, &request->request_id);
4977 request->error_index = request->request_id;
4978 if (cdb_length > sizeof(request->cdb))
4979 cdb_length = sizeof(request->cdb);
4980 request->cdb_length = cdb_length;
4981 memcpy(request->cdb, cdb, cdb_length);
4982
4983 switch (scmd->sc_data_direction) {
4984 case DMA_TO_DEVICE:
4985 request->data_direction = SOP_READ_FLAG;
4986 break;
4987 case DMA_FROM_DEVICE:
4988 request->data_direction = SOP_WRITE_FLAG;
4989 break;
4990 case DMA_NONE:
4991 request->data_direction = SOP_NO_DIRECTION_FLAG;
4992 break;
4993 case DMA_BIDIRECTIONAL:
4994 request->data_direction = SOP_BIDIRECTIONAL;
4995 break;
4996 default:
4997 dev_err(&ctrl_info->pci_dev->dev,
4998 "unknown data direction: %d\n",
4999 scmd->sc_data_direction);
6c223761
KB		 5000 break;
5001 }
5002
5003 if (encryption_info) {
5004 request->encryption_enable = true;
5005 put_unaligned_le16(encryption_info->data_encryption_key_index,
5006 &request->data_encryption_key_index);
5007 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5008 &request->encrypt_tweak_lower);
5009 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5010 &request->encrypt_tweak_upper);
5011 }
5012
5013 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
5014 if (rc) {
5015 pqi_free_io_request(io_request);
5016 return SCSI_MLQUEUE_HOST_BUSY;
5017 }
5018
5019 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5020
5021 return 0;
5022}
5023
061ef06a
KB		 5024static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
5025 struct scsi_cmnd *scmd)
5026{
5027 u16 hw_queue;
5028
5029 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
5030 if (hw_queue > ctrl_info->max_hw_queue_index)
5031 hw_queue = 0;
5032
5033 return hw_queue;
5034}
5035
7561a7e4
KB		 5036/*
5037 * This function gets called just before we hand the completed SCSI request
5038 * back to the SML.
5039 */
5040
5041void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
5042{
5043 struct pqi_scsi_dev *device;
5044
5045 device = scmd->device->hostdata;
5046 atomic_dec(&device->scsi_cmds_outstanding);
5047}
5048
6c223761 5049static int pqi_scsi_queue_command(struct Scsi_Host *shost,
7d81d2b8 5050 struct scsi_cmnd *scmd)
6c223761
KB		 5051{
5052 int rc;
5053 struct pqi_ctrl_info *ctrl_info;
5054 struct pqi_scsi_dev *device;
061ef06a 5055 u16 hw_queue;
6c223761
KB		 5056 struct pqi_queue_group *queue_group;
5057 bool raid_bypassed;
5058
5059 device = scmd->device->hostdata;
6c223761
KB		 5060 ctrl_info = shost_to_hba(shost);
5061
7561a7e4
KB		 5062 atomic_inc(&device->scsi_cmds_outstanding);
5063
6c223761
KB		 5064 if (pqi_ctrl_offline(ctrl_info)) {
5065 set_host_byte(scmd, DID_NO_CONNECT);
5066 pqi_scsi_done(scmd);
5067 return 0;
5068 }
5069
7561a7e4
KB		 5070 pqi_ctrl_busy(ctrl_info);
5071 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device)) {
5072 rc = SCSI_MLQUEUE_HOST_BUSY;
5073 goto out;
5074 }
5075
7d81d2b8
KB		 5076 /*
5077 * This is necessary because the SML doesn't zero out this field during
5078 * error recovery.
5079 */
5080 scmd->result = 0;
5081
061ef06a
KB		 5082 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
5083 queue_group = &ctrl_info->queue_groups[hw_queue];
6c223761
KB		 5084
5085 if (pqi_is_logical_device(device)) {
5086 raid_bypassed = false;
588a63fe 5087 if (device->raid_bypass_enabled &&
57292b58 5088 !blk_rq_is_passthrough(scmd->request)) {
6c223761
KB		 5089 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
5090 scmd, queue_group);
376fb880
KB		 5091 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
5092 raid_bypassed = true;
6c223761
KB		 5093 }
5094 if (!raid_bypassed)
5095 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5096 queue_group);
5097 } else {
5098 if (device->aio_enabled)
5099 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd,
5100 queue_group);
5101 else
5102 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5103 queue_group);
5104 }
5105
7561a7e4
KB		 5106out:
5107 pqi_ctrl_unbusy(ctrl_info);
5108 if (rc)
5109 atomic_dec(&device->scsi_cmds_outstanding);
5110
6c223761
KB		 5111 return rc;
5112}
5113
7561a7e4
KB		 5114static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
5115 struct pqi_queue_group *queue_group)
5116{
5117 unsigned int path;
5118 unsigned long flags;
5119 bool list_is_empty;
5120
5121 for (path = 0; path < 2; path++) {
5122 while (1) {
5123 spin_lock_irqsave(
5124 &queue_group->submit_lock[path], flags);
5125 list_is_empty =
5126 list_empty(&queue_group->request_list[path]);
5127 spin_unlock_irqrestore(
5128 &queue_group->submit_lock[path], flags);
5129 if (list_is_empty)
5130 break;
5131 pqi_check_ctrl_health(ctrl_info);
5132 if (pqi_ctrl_offline(ctrl_info))
5133 return -ENXIO;
5134 usleep_range(1000, 2000);
5135 }
5136 }
5137
5138 return 0;
5139}
5140
5141static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
5142{
5143 int rc;
5144 unsigned int i;
5145 unsigned int path;
5146 struct pqi_queue_group *queue_group;
5147 pqi_index_t iq_pi;
5148 pqi_index_t iq_ci;
5149
5150 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5151 queue_group = &ctrl_info->queue_groups[i];
5152
5153 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
5154 if (rc)
5155 return rc;
5156
5157 for (path = 0; path < 2; path++) {
5158 iq_pi = queue_group->iq_pi_copy[path];
5159
5160 while (1) {
dac12fbc 5161 iq_ci = readl(queue_group->iq_ci[path]);
7561a7e4
KB		 5162 if (iq_ci == iq_pi)
5163 break;
5164 pqi_check_ctrl_health(ctrl_info);
5165 if (pqi_ctrl_offline(ctrl_info))
5166 return -ENXIO;
5167 usleep_range(1000, 2000);
5168 }
5169 }
5170 }
5171
5172 return 0;
5173}
5174
5175static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5176 struct pqi_scsi_dev *device)
5177{
5178 unsigned int i;
5179 unsigned int path;
5180 struct pqi_queue_group *queue_group;
5181 unsigned long flags;
5182 struct pqi_io_request *io_request;
5183 struct pqi_io_request *next;
5184 struct scsi_cmnd *scmd;
5185 struct pqi_scsi_dev *scsi_device;
5186
5187 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5188 queue_group = &ctrl_info->queue_groups[i];
5189
5190 for (path = 0; path < 2; path++) {
5191 spin_lock_irqsave(
5192 &queue_group->submit_lock[path], flags);
5193
5194 list_for_each_entry_safe(io_request, next,
5195 &queue_group->request_list[path],
5196 request_list_entry) {
5197 scmd = io_request->scmd;
5198 if (!scmd)
5199 continue;
5200
5201 scsi_device = scmd->device->hostdata;
5202 if (scsi_device != device)
5203 continue;
5204
5205 list_del(&io_request->request_list_entry);
5206 set_host_byte(scmd, DID_RESET);
5207 pqi_scsi_done(scmd);
5208 }
5209
5210 spin_unlock_irqrestore(
5211 &queue_group->submit_lock[path], flags);
5212 }
5213 }
5214}
5215
061ef06a
KB		 5216static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5217 struct pqi_scsi_dev *device)
5218{
5219 while (atomic_read(&device->scsi_cmds_outstanding)) {
5220 pqi_check_ctrl_health(ctrl_info);
5221 if (pqi_ctrl_offline(ctrl_info))
5222 return -ENXIO;
5223 usleep_range(1000, 2000);
5224 }
5225
5226 return 0;
5227}
5228
5229static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info)
5230{
5231 bool io_pending;
5232 unsigned long flags;
5233 struct pqi_scsi_dev *device;
5234
5235 while (1) {
5236 io_pending = false;
5237
5238 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5239 list_for_each_entry(device, &ctrl_info->scsi_device_list,
5240 scsi_device_list_entry) {
5241 if (atomic_read(&device->scsi_cmds_outstanding)) {
5242 io_pending = true;
5243 break;
5244 }
5245 }
5246 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5247 flags);
5248
5249 if (!io_pending)
5250 break;
5251
5252 pqi_check_ctrl_health(ctrl_info);
5253 if (pqi_ctrl_offline(ctrl_info))
5254 return -ENXIO;
5255
5256 usleep_range(1000, 2000);
5257 }
5258
5259 return 0;
5260}
5261
14bb215d
KB		 5262static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
5263 void *context)
6c223761 5264{
14bb215d 5265 struct completion *waiting = context;
6c223761 5266
14bb215d
KB		 5267 complete(waiting);
5268}
6c223761 5269
14bb215d
KB		 5270#define PQI_LUN_RESET_TIMEOUT_SECS 10
5271
5272static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
5273 struct pqi_scsi_dev *device, struct completion *wait)
5274{
5275 int rc;
14bb215d
KB		 5276
5277 while (1) {
5278 if (wait_for_completion_io_timeout(wait,
5279 PQI_LUN_RESET_TIMEOUT_SECS * HZ)) {
5280 rc = 0;
5281 break;
6c223761
KB		 5282 }
5283
14bb215d
KB		 5284 pqi_check_ctrl_health(ctrl_info);
5285 if (pqi_ctrl_offline(ctrl_info)) {
4e8415e3 5286 rc = -ENXIO;
14bb215d
KB		 5287 break;
5288 }
6c223761 5289 }
6c223761 5290
14bb215d 5291 return rc;
6c223761
KB		 5292}
5293
14bb215d 5294static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 5295 struct pqi_scsi_dev *device)
5296{
5297 int rc;
5298 struct pqi_io_request *io_request;
5299 DECLARE_COMPLETION_ONSTACK(wait);
5300 struct pqi_task_management_request *request;
5301
6c223761 5302 io_request = pqi_alloc_io_request(ctrl_info);
14bb215d 5303 io_request->io_complete_callback = pqi_lun_reset_complete;
6c223761
KB		 5304 io_request->context = &wait;
5305
5306 request = io_request->iu;
5307 memset(request, 0, sizeof(*request));
5308
5309 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
5310 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
5311 &request->header.iu_length);
5312 put_unaligned_le16(io_request->index, &request->request_id);
5313 memcpy(request->lun_number, device->scsi3addr,
5314 sizeof(request->lun_number));
5315 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
5316
5317 pqi_start_io(ctrl_info,
5318 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
5319 io_request);
5320
14bb215d
KB		 5321 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
5322 if (rc == 0)
6c223761 5323 rc = io_request->status;
6c223761
KB		 5324
5325 pqi_free_io_request(io_request);
6c223761
KB		 5326
5327 return rc;
5328}
5329
3406384b
MR		 5330#define PQI_LUN_RESET_RETRIES 3
5331#define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000
6c223761
KB		 5332/* Performs a reset at the LUN level. */
5333
5334static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5335 struct pqi_scsi_dev *device)
5336{
5337 int rc;
3406384b 5338 unsigned int retries;
6c223761 5339
3406384b
MR		 5340 for (retries = 0;;) {
5341 rc = pqi_lun_reset(ctrl_info, device);
5342 if (rc != -EAGAIN ||
5343 ++retries > PQI_LUN_RESET_RETRIES)
5344 break;
5345 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
5346 }
061ef06a
KB		 5347 if (rc == 0)
5348 rc = pqi_device_wait_for_pending_io(ctrl_info, device);
6c223761 5349
14bb215d 5350 return rc == 0 ? SUCCESS : FAILED;
6c223761
KB		 5351}
5352
5353static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
5354{
5355 int rc;
7561a7e4 5356 struct Scsi_Host *shost;
6c223761
KB		 5357 struct pqi_ctrl_info *ctrl_info;
5358 struct pqi_scsi_dev *device;
5359
7561a7e4
KB		 5360 shost = scmd->device->host;
5361 ctrl_info = shost_to_hba(shost);
6c223761
KB		 5362 device = scmd->device->hostdata;
5363
5364 dev_err(&ctrl_info->pci_dev->dev,
5365 "resetting scsi %d:%d:%d:%d\n",
7561a7e4 5366 shost->host_no, device->bus, device->target, device->lun);
6c223761 5367
7561a7e4
KB		 5368 pqi_check_ctrl_health(ctrl_info);
5369 if (pqi_ctrl_offline(ctrl_info)) {
5370 rc = FAILED;
5371 goto out;
5372 }
6c223761 5373
7561a7e4
KB		 5374 mutex_lock(&ctrl_info->lun_reset_mutex);
5375
5376 pqi_ctrl_block_requests(ctrl_info);
5377 pqi_ctrl_wait_until_quiesced(ctrl_info);
5378 pqi_fail_io_queued_for_device(ctrl_info, device);
5379 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
5380 pqi_device_reset_start(device);
5381 pqi_ctrl_unblock_requests(ctrl_info);
5382
5383 if (rc)
5384 rc = FAILED;
5385 else
5386 rc = pqi_device_reset(ctrl_info, device);
5387
5388 pqi_device_reset_done(device);
5389
5390 mutex_unlock(&ctrl_info->lun_reset_mutex);
5391
5392out:
6c223761
KB		 5393 dev_err(&ctrl_info->pci_dev->dev,
5394 "reset of scsi %d:%d:%d:%d: %s\n",
7561a7e4 5395 shost->host_no, device->bus, device->target, device->lun,
6c223761
KB		 5396 rc == SUCCESS ? "SUCCESS" : "FAILED");
5397
5398 return rc;
5399}
5400
5401static int pqi_slave_alloc(struct scsi_device *sdev)
5402{
5403 struct pqi_scsi_dev *device;
5404 unsigned long flags;
5405 struct pqi_ctrl_info *ctrl_info;
5406 struct scsi_target *starget;
5407 struct sas_rphy *rphy;
5408
5409 ctrl_info = shost_to_hba(sdev->host);
5410
5411 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5412
5413 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
5414 starget = scsi_target(sdev);
5415 rphy = target_to_rphy(starget);
5416 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
5417 if (device) {
5418 device->target = sdev_id(sdev);
5419 device->lun = sdev->lun;
5420 device->target_lun_valid = true;
5421 }
5422 } else {
5423 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
5424 sdev_id(sdev), sdev->lun);
5425 }
5426
94086f5b 5427 if (device) {
6c223761
KB		 5428 sdev->hostdata = device;
5429 device->sdev = sdev;
5430 if (device->queue_depth) {
5431 device->advertised_queue_depth = device->queue_depth;
5432 scsi_change_queue_depth(sdev,
5433 device->advertised_queue_depth);
5434 }
b6e2ef67
DC		 5435 if (pqi_is_logical_device(device))
5436 pqi_disable_write_same(sdev);
2b447f81
DC		 5437 else
5438 sdev->allow_restart = 1;
6c223761
KB		 5439 }
5440
5441 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5442
5443 return 0;
5444}
5445
52198226
CH		 5446static int pqi_map_queues(struct Scsi_Host *shost)
5447{
5448 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
5449
f23f5bec 5450 return blk_mq_pci_map_queues(&shost->tag_set, ctrl_info->pci_dev, 0);
52198226
CH		 5451}
5452
6c223761
KB		 5453static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
5454 void __user *arg)
5455{
5456 struct pci_dev *pci_dev;
5457 u32 subsystem_vendor;
5458 u32 subsystem_device;
5459 cciss_pci_info_struct pciinfo;
5460
5461 if (!arg)
5462 return -EINVAL;
5463
5464 pci_dev = ctrl_info->pci_dev;
5465
5466 pciinfo.domain = pci_domain_nr(pci_dev->bus);
5467 pciinfo.bus = pci_dev->bus->number;
5468 pciinfo.dev_fn = pci_dev->devfn;
5469 subsystem_vendor = pci_dev->subsystem_vendor;
5470 subsystem_device = pci_dev->subsystem_device;
5471 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) |
5472 subsystem_vendor;
5473
5474 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
5475 return -EFAULT;
5476
5477 return 0;
5478}
5479
5480static int pqi_getdrivver_ioctl(void __user *arg)
5481{
5482 u32 version;
5483
5484 if (!arg)
5485 return -EINVAL;
5486
5487 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
5488 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
5489
5490 if (copy_to_user(arg, &version, sizeof(version)))
5491 return -EFAULT;
5492
5493 return 0;
5494}
5495
5496struct ciss_error_info {
5497 u8 scsi_status;
5498 int command_status;
5499 size_t sense_data_length;
5500};
5501
5502static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
5503 struct ciss_error_info *ciss_error_info)
5504{
5505 int ciss_cmd_status;
5506 size_t sense_data_length;
5507
5508 switch (pqi_error_info->data_out_result) {
5509 case PQI_DATA_IN_OUT_GOOD:
5510 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
5511 break;
5512 case PQI_DATA_IN_OUT_UNDERFLOW:
5513 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
5514 break;
5515 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
5516 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
5517 break;
5518 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
5519 case PQI_DATA_IN_OUT_BUFFER_ERROR:
5520 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
5521 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
5522 case PQI_DATA_IN_OUT_ERROR:
5523 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
5524 break;
5525 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
5526 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
5527 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
5528 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
5529 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
5530 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
5531 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
5532 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
5533 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
5534 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
5535 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
5536 break;
5537 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
5538 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
5539 break;
5540 case PQI_DATA_IN_OUT_ABORTED:
5541 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
5542 break;
5543 case PQI_DATA_IN_OUT_TIMEOUT:
5544 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
5545 break;
5546 default:
5547 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
5548 break;
5549 }
5550
5551 sense_data_length =
5552 get_unaligned_le16(&pqi_error_info->sense_data_length);
5553 if (sense_data_length == 0)
5554 sense_data_length =
5555 get_unaligned_le16(&pqi_error_info->response_data_length);
5556 if (sense_data_length)
5557 if (sense_data_length > sizeof(pqi_error_info->data))
5558 sense_data_length = sizeof(pqi_error_info->data);
5559
5560 ciss_error_info->scsi_status = pqi_error_info->status;
5561 ciss_error_info->command_status = ciss_cmd_status;
5562 ciss_error_info->sense_data_length = sense_data_length;
5563}
5564
5565static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
5566{
5567 int rc;
5568 char *kernel_buffer = NULL;
5569 u16 iu_length;
5570 size_t sense_data_length;
5571 IOCTL_Command_struct iocommand;
5572 struct pqi_raid_path_request request;
5573 struct pqi_raid_error_info pqi_error_info;
5574 struct ciss_error_info ciss_error_info;
5575
5576 if (pqi_ctrl_offline(ctrl_info))
5577 return -ENXIO;
5578 if (!arg)
5579 return -EINVAL;
5580 if (!capable(CAP_SYS_RAWIO))
5581 return -EPERM;
5582 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
5583 return -EFAULT;
5584 if (iocommand.buf_size < 1 &&
5585 iocommand.Request.Type.Direction != XFER_NONE)
5586 return -EINVAL;
5587 if (iocommand.Request.CDBLen > sizeof(request.cdb))
5588 return -EINVAL;
5589 if (iocommand.Request.Type.Type != TYPE_CMD)
5590 return -EINVAL;
5591
5592 switch (iocommand.Request.Type.Direction) {
5593 case XFER_NONE:
5594 case XFER_WRITE:
5595 case XFER_READ:
41555d54 5596 case XFER_READ | XFER_WRITE:
6c223761
KB		 5597 break;
5598 default:
5599 return -EINVAL;
5600 }
5601
5602 if (iocommand.buf_size > 0) {
5603 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
5604 if (!kernel_buffer)
5605 return -ENOMEM;
5606 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5607 if (copy_from_user(kernel_buffer, iocommand.buf,
5608 iocommand.buf_size)) {
5609 rc = -EFAULT;
5610 goto out;
5611 }
5612 } else {
5613 memset(kernel_buffer, 0, iocommand.buf_size);
5614 }
5615 }
5616
5617 memset(&request, 0, sizeof(request));
5618
5619 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
5620 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
5621 PQI_REQUEST_HEADER_LENGTH;
5622 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
5623 sizeof(request.lun_number));
5624 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
5625 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
5626
5627 switch (iocommand.Request.Type.Direction) {
5628 case XFER_NONE:
5629 request.data_direction = SOP_NO_DIRECTION_FLAG;
5630 break;
5631 case XFER_WRITE:
5632 request.data_direction = SOP_WRITE_FLAG;
5633 break;
5634 case XFER_READ:
5635 request.data_direction = SOP_READ_FLAG;
5636 break;
41555d54
KB		 5637 case XFER_READ | XFER_WRITE:
5638 request.data_direction = SOP_BIDIRECTIONAL;
5639 break;
6c223761
KB		 5640 }
5641
5642 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5643
5644 if (iocommand.buf_size > 0) {
5645 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
5646
5647 rc = pqi_map_single(ctrl_info->pci_dev,
5648 &request.sg_descriptors[0], kernel_buffer,
6917a9cc 5649 iocommand.buf_size, DMA_BIDIRECTIONAL);
6c223761
KB		 5650 if (rc)
5651 goto out;
5652
5653 iu_length += sizeof(request.sg_descriptors[0]);
5654 }
5655
5656 put_unaligned_le16(iu_length, &request.header.iu_length);
5657
5658 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
5659 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
5660
5661 if (iocommand.buf_size > 0)
5662 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
6917a9cc 5663 DMA_BIDIRECTIONAL);
6c223761
KB		 5664
5665 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
5666
5667 if (rc == 0) {
5668 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
5669 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
5670 iocommand.error_info.CommandStatus =
5671 ciss_error_info.command_status;
5672 sense_data_length = ciss_error_info.sense_data_length;
5673 if (sense_data_length) {
5674 if (sense_data_length >
5675 sizeof(iocommand.error_info.SenseInfo))
5676 sense_data_length =
5677 sizeof(iocommand.error_info.SenseInfo);
5678 memcpy(iocommand.error_info.SenseInfo,
5679 pqi_error_info.data, sense_data_length);
5680 iocommand.error_info.SenseLen = sense_data_length;
5681 }
5682 }
5683
5684 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
5685 rc = -EFAULT;
5686 goto out;
5687 }
5688
5689 if (rc == 0 && iocommand.buf_size > 0 &&
5690 (iocommand.Request.Type.Direction & XFER_READ)) {
5691 if (copy_to_user(iocommand.buf, kernel_buffer,
5692 iocommand.buf_size)) {
5693 rc = -EFAULT;
5694 }
5695 }
5696
5697out:
5698 kfree(kernel_buffer);
5699
5700 return rc;
5701}
5702
5703static int pqi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5704{
5705 int rc;
5706 struct pqi_ctrl_info *ctrl_info;
5707
5708 ctrl_info = shost_to_hba(sdev->host);
5709
5710 switch (cmd) {
5711 case CCISS_DEREGDISK:
5712 case CCISS_REGNEWDISK:
5713 case CCISS_REGNEWD:
5714 rc = pqi_scan_scsi_devices(ctrl_info);
5715 break;
5716 case CCISS_GETPCIINFO:
5717 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
5718 break;
5719 case CCISS_GETDRIVVER:
5720 rc = pqi_getdrivver_ioctl(arg);
5721 break;
5722 case CCISS_PASSTHRU:
5723 rc = pqi_passthru_ioctl(ctrl_info, arg);
5724 break;
5725 default:
5726 rc = -EINVAL;
5727 break;
5728 }
5729
5730 return rc;
5731}
5732
5733static ssize_t pqi_version_show(struct device *dev,
5734 struct device_attribute *attr, char *buffer)
5735{
5736 ssize_t count = 0;
5737 struct Scsi_Host *shost;
5738 struct pqi_ctrl_info *ctrl_info;
5739
5740 shost = class_to_shost(dev);
5741 ctrl_info = shost_to_hba(shost);
5742
5743 count += snprintf(buffer + count, PAGE_SIZE - count,
5744 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP);
5745
5746 count += snprintf(buffer + count, PAGE_SIZE - count,
5747 "firmware: %s\n", ctrl_info->firmware_version);
5748
5749 return count;
5750}
5751
5752static ssize_t pqi_host_rescan_store(struct device *dev,
5753 struct device_attribute *attr, const char *buffer, size_t count)
5754{
5755 struct Scsi_Host *shost = class_to_shost(dev);
5756
5757 pqi_scan_start(shost);
5758
5759 return count;
5760}
5761
3c50976f
KB		 5762static ssize_t pqi_lockup_action_show(struct device *dev,
5763 struct device_attribute *attr, char *buffer)
5764{
5765 int count = 0;
5766 unsigned int i;
5767
5768 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
5769 if (pqi_lockup_actions[i].action == pqi_lockup_action)
5770 count += snprintf(buffer + count, PAGE_SIZE - count,
5771 "[%s] ", pqi_lockup_actions[i].name);
5772 else
5773 count += snprintf(buffer + count, PAGE_SIZE - count,
5774 "%s ", pqi_lockup_actions[i].name);
5775 }
5776
5777 count += snprintf(buffer + count, PAGE_SIZE - count, "\n");
5778
5779 return count;
5780}
5781
5782static ssize_t pqi_lockup_action_store(struct device *dev,
5783 struct device_attribute *attr, const char *buffer, size_t count)
5784{
5785 unsigned int i;
5786 char *action_name;
5787 char action_name_buffer[32];
5788
5789 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
5790 action_name = strstrip(action_name_buffer);
5791
5792 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
5793 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
5794 pqi_lockup_action = pqi_lockup_actions[i].action;
5795 return count;
5796 }
5797 }
5798
5799 return -EINVAL;
5800}
5801
cbe0c7b1
KB		 5802static DEVICE_ATTR(version, 0444, pqi_version_show, NULL);
5803static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
3c50976f
KB		 5804static DEVICE_ATTR(lockup_action, 0644,
5805 pqi_lockup_action_show, pqi_lockup_action_store);
6c223761
KB		 5806
5807static struct device_attribute *pqi_shost_attrs[] = {
5808 &dev_attr_version,
5809 &dev_attr_rescan,
3c50976f 5810 &dev_attr_lockup_action,
6c223761
KB		 5811 NULL
5812};
5813
cd128244
DC		 5814static ssize_t pqi_unique_id_show(struct device *dev,
5815 struct device_attribute *attr, char *buffer)
5816{
5817 struct pqi_ctrl_info *ctrl_info;
5818 struct scsi_device *sdev;
5819 struct pqi_scsi_dev *device;
5820 unsigned long flags;
5821 unsigned char uid[16];
5822
5823 sdev = to_scsi_device(dev);
5824 ctrl_info = shost_to_hba(sdev->host);
5825
5826 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5827
5828 device = sdev->hostdata;
5829 if (!device) {
5830 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5831 flags);
5832 return -ENODEV;
5833 }
5834 memcpy(uid, device->unique_id, sizeof(uid));
5835
5836 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5837
5995b236
MB		 5838 return snprintf(buffer, PAGE_SIZE,
5839 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n",
5840 uid[0], uid[1], uid[2], uid[3],
5841 uid[4], uid[5], uid[6], uid[7],
5842 uid[8], uid[9], uid[10], uid[11],
5843 uid[12], uid[13], uid[14], uid[15]);
cd128244
DC		 5844}
5845
5846static ssize_t pqi_lunid_show(struct device *dev,
5847 struct device_attribute *attr, char *buffer)
5848{
5849 struct pqi_ctrl_info *ctrl_info;
5850 struct scsi_device *sdev;
5851 struct pqi_scsi_dev *device;
5852 unsigned long flags;
5853 u8 lunid[8];
5854
5855 sdev = to_scsi_device(dev);
5856 ctrl_info = shost_to_hba(sdev->host);
5857
5858 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5859
5860 device = sdev->hostdata;
5861 if (!device) {
5862 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5863 flags);
5864 return -ENODEV;
5865 }
5866 memcpy(lunid, device->scsi3addr, sizeof(lunid));
5867
5868 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5869
5870 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
5871}
5872
5873#define MAX_PATHS 8
5874static ssize_t pqi_path_info_show(struct device *dev,
5875 struct device_attribute *attr, char *buf)
5876{
5877 struct pqi_ctrl_info *ctrl_info;
5878 struct scsi_device *sdev;
5879 struct pqi_scsi_dev *device;
5880 unsigned long flags;
5881 int i;
5882 int output_len = 0;
5883 u8 box;
5884 u8 bay;
5885 u8 path_map_index = 0;
5886 char *active;
5887 unsigned char phys_connector[2];
5888
5889 sdev = to_scsi_device(dev);
5890 ctrl_info = shost_to_hba(sdev->host);
5891
5892 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5893
5894 device = sdev->hostdata;
5895 if (!device) {
5896 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5897 flags);
5898 return -ENODEV;
5899 }
5900
5901 bay = device->bay;
5902 for (i = 0; i < MAX_PATHS; i++) {
5903 path_map_index = 1<<i;
5904 if (i == device->active_path_index)
5905 active = "Active";
5906 else if (device->path_map & path_map_index)
5907 active = "Inactive";
5908 else
5909 continue;
5910
5911 output_len += scnprintf(buf + output_len,
5912 PAGE_SIZE - output_len,
5913 "[%d:%d:%d:%d] %20.20s ",
5914 ctrl_info->scsi_host->host_no,
5915 device->bus, device->target,
5916 device->lun,
5917 scsi_device_type(device->devtype));
5918
5919 if (device->devtype == TYPE_RAID ||
5920 pqi_is_logical_device(device))
5921 goto end_buffer;
5922
5923 memcpy(&phys_connector, &device->phys_connector[i],
5924 sizeof(phys_connector));
5925 if (phys_connector[0] < '0')
5926 phys_connector[0] = '0';
5927 if (phys_connector[1] < '0')
5928 phys_connector[1] = '0';
5929
5930 output_len += scnprintf(buf + output_len,
5931 PAGE_SIZE - output_len,
5932 "PORT: %.2s ", phys_connector);
5933
5934 box = device->box[i];
5935 if (box != 0 && box != 0xFF)
5936 output_len += scnprintf(buf + output_len,
5937 PAGE_SIZE - output_len,
5938 "BOX: %hhu ", box);
5939
5940 if ((device->devtype == TYPE_DISK ||
5941 device->devtype == TYPE_ZBC) &&
5942 pqi_expose_device(device))
5943 output_len += scnprintf(buf + output_len,
5944 PAGE_SIZE - output_len,
5945 "BAY: %hhu ", bay);
5946
5947end_buffer:
5948 output_len += scnprintf(buf + output_len,
5949 PAGE_SIZE - output_len,
5950 "%s\n", active);
5951 }
5952
5953 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5954 return output_len;
5955}
5956
5957
6c223761
KB		 5958static ssize_t pqi_sas_address_show(struct device *dev,
5959 struct device_attribute *attr, char *buffer)
5960{
5961 struct pqi_ctrl_info *ctrl_info;
5962 struct scsi_device *sdev;
5963 struct pqi_scsi_dev *device;
5964 unsigned long flags;
5965 u64 sas_address;
5966
5967 sdev = to_scsi_device(dev);
5968 ctrl_info = shost_to_hba(sdev->host);
5969
5970 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5971
5972 device = sdev->hostdata;
5973 if (pqi_is_logical_device(device)) {
5974 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5975 flags);
5976 return -ENODEV;
5977 }
5978 sas_address = device->sas_address;
5979
5980 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5981
5982 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
5983}
5984
5985static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
5986 struct device_attribute *attr, char *buffer)
5987{
5988 struct pqi_ctrl_info *ctrl_info;
5989 struct scsi_device *sdev;
5990 struct pqi_scsi_dev *device;
5991 unsigned long flags;
5992
5993 sdev = to_scsi_device(dev);
5994 ctrl_info = shost_to_hba(sdev->host);
5995
5996 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5997
5998 device = sdev->hostdata;
588a63fe 5999 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
6c223761
KB		 6000 buffer[1] = '\n';
6001 buffer[2] = '\0';
6002
6003 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6004
6005 return 2;
6006}
6007
a9f93392
KB		 6008static ssize_t pqi_raid_level_show(struct device *dev,
6009 struct device_attribute *attr, char *buffer)
6010{
6011 struct pqi_ctrl_info *ctrl_info;
6012 struct scsi_device *sdev;
6013 struct pqi_scsi_dev *device;
6014 unsigned long flags;
6015 char *raid_level;
6016
6017 sdev = to_scsi_device(dev);
6018 ctrl_info = shost_to_hba(sdev->host);
6019
6020 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6021
6022 device = sdev->hostdata;
6023
6024 if (pqi_is_logical_device(device))
6025 raid_level = pqi_raid_level_to_string(device->raid_level);
6026 else
6027 raid_level = "N/A";
6028
6029 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6030
6031 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
6032}
6033
cd128244
DC		 6034static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
6035static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
6036static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
cbe0c7b1
KB		 6037static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
6038static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
6c223761 6039 pqi_ssd_smart_path_enabled_show, NULL);
a9f93392 6040static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
6c223761
KB		 6041
6042static struct device_attribute *pqi_sdev_attrs[] = {
cd128244
DC		 6043 &dev_attr_lunid,
6044 &dev_attr_unique_id,
6045 &dev_attr_path_info,
6c223761
KB		 6046 &dev_attr_sas_address,
6047 &dev_attr_ssd_smart_path_enabled,
a9f93392 6048 &dev_attr_raid_level,
6c223761
KB		 6049 NULL
6050};
6051
6052static struct scsi_host_template pqi_driver_template = {
6053 .module = THIS_MODULE,
6054 .name = DRIVER_NAME_SHORT,
6055 .proc_name = DRIVER_NAME_SHORT,
6056 .queuecommand = pqi_scsi_queue_command,
6057 .scan_start = pqi_scan_start,
6058 .scan_finished = pqi_scan_finished,
6059 .this_id = -1,
6c223761
KB		 6060 .eh_device_reset_handler = pqi_eh_device_reset_handler,
6061 .ioctl = pqi_ioctl,
6062 .slave_alloc = pqi_slave_alloc,
52198226 6063 .map_queues = pqi_map_queues,
6c223761
KB		 6064 .sdev_attrs = pqi_sdev_attrs,
6065 .shost_attrs = pqi_shost_attrs,
6066};
6067
6068static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
6069{
6070 int rc;
6071 struct Scsi_Host *shost;
6072
6073 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
6074 if (!shost) {
6075 dev_err(&ctrl_info->pci_dev->dev,
6076 "scsi_host_alloc failed for controller %u\n",
6077 ctrl_info->ctrl_id);
6078 return -ENOMEM;
6079 }
6080
6081 shost->io_port = 0;
6082 shost->n_io_port = 0;
6083 shost->this_id = -1;
6084 shost->max_channel = PQI_MAX_BUS;
6085 shost->max_cmd_len = MAX_COMMAND_SIZE;
6086 shost->max_lun = ~0;
6087 shost->max_id = ~0;
6088 shost->max_sectors = ctrl_info->max_sectors;
6089 shost->can_queue = ctrl_info->scsi_ml_can_queue;
6090 shost->cmd_per_lun = shost->can_queue;
6091 shost->sg_tablesize = ctrl_info->sg_tablesize;
6092 shost->transportt = pqi_sas_transport_template;
52198226 6093 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
6c223761
KB		 6094 shost->unique_id = shost->irq;
6095 shost->nr_hw_queues = ctrl_info->num_queue_groups;
6096 shost->hostdata[0] = (unsigned long)ctrl_info;
6097
6098 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
6099 if (rc) {
6100 dev_err(&ctrl_info->pci_dev->dev,
6101 "scsi_add_host failed for controller %u\n",
6102 ctrl_info->ctrl_id);
6103 goto free_host;
6104 }
6105
6106 rc = pqi_add_sas_host(shost, ctrl_info);
6107 if (rc) {
6108 dev_err(&ctrl_info->pci_dev->dev,
6109 "add SAS host failed for controller %u\n",
6110 ctrl_info->ctrl_id);
6111 goto remove_host;
6112 }
6113
6114 ctrl_info->scsi_host = shost;
6115
6116 return 0;
6117
6118remove_host:
6119 scsi_remove_host(shost);
6120free_host:
6121 scsi_host_put(shost);
6122
6123 return rc;
6124}
6125
6126static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
6127{
6128 struct Scsi_Host *shost;
6129
6130 pqi_delete_sas_host(ctrl_info);
6131
6132 shost = ctrl_info->scsi_host;
6133 if (!shost)
6134 return;
6135
6136 scsi_remove_host(shost);
6137 scsi_host_put(shost);
6138}
6139
336b6819
KB		 6140static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
6141{
6142 int rc = 0;
6143 struct pqi_device_registers __iomem *pqi_registers;
6144 unsigned long timeout;
6145 unsigned int timeout_msecs;
6146 union pqi_reset_register reset_reg;
6c223761 6147
336b6819
KB		 6148 pqi_registers = ctrl_info->pqi_registers;
6149 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
6150 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
6151
6152 while (1) {
6153 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
6154 reset_reg.all_bits = readl(&pqi_registers->device_reset);
6155 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
6156 break;
6157 pqi_check_ctrl_health(ctrl_info);
6158 if (pqi_ctrl_offline(ctrl_info)) {
6159 rc = -ENXIO;
6160 break;
6161 }
6162 if (time_after(jiffies, timeout)) {
6163 rc = -ETIMEDOUT;
6164 break;
6165 }
6166 }
6167
6168 return rc;
6169}
6c223761
KB		 6170
6171static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
6172{
6173 int rc;
336b6819
KB		 6174 union pqi_reset_register reset_reg;
6175
6176 if (ctrl_info->pqi_reset_quiesce_supported) {
6177 rc = sis_pqi_reset_quiesce(ctrl_info);
6178 if (rc) {
6179 dev_err(&ctrl_info->pci_dev->dev,
6180 "PQI reset failed during quiesce with error %d\n",
6181 rc);
6182 return rc;
6183 }
6184 }
6c223761 6185
336b6819
KB		 6186 reset_reg.all_bits = 0;
6187 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
6188 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
6c223761 6189
336b6819 6190 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
6c223761 6191
336b6819 6192 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
6c223761
KB		 6193 if (rc)
6194 dev_err(&ctrl_info->pci_dev->dev,
336b6819 6195 "PQI reset failed with error %d\n", rc);
6c223761
KB		 6196
6197 return rc;
6198}
6199
6200static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info)
6201{
6202 int rc;
6203 struct bmic_identify_controller *identify;
6204
6205 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
6206 if (!identify)
6207 return -ENOMEM;
6208
6209 rc = pqi_identify_controller(ctrl_info, identify);
6210 if (rc)
6211 goto out;
6212
6213 memcpy(ctrl_info->firmware_version, identify->firmware_version,
6214 sizeof(identify->firmware_version));
6215 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
6216 snprintf(ctrl_info->firmware_version +
6217 strlen(ctrl_info->firmware_version),
6218 sizeof(ctrl_info->firmware_version),
6219 "-%u", get_unaligned_le16(&identify->firmware_build_number));
6220
6221out:
6222 kfree(identify);
6223
6224 return rc;
6225}
6226
b212c251
KB		 6227struct pqi_config_table_section_info {
6228 struct pqi_ctrl_info *ctrl_info;
6229 void *section;
6230 u32 section_offset;
6231 void __iomem *section_iomem_addr;
6232};
6233
6234static inline bool pqi_is_firmware_feature_supported(
6235 struct pqi_config_table_firmware_features *firmware_features,
6236 unsigned int bit_position)
6237{
6238 unsigned int byte_index;
6239
6240 byte_index = bit_position / BITS_PER_BYTE;
6241
6242 if (byte_index >= le16_to_cpu(firmware_features->num_elements))
6243 return false;
6244
6245 return firmware_features->features_supported[byte_index] &
6246 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6247}
6248
6249static inline bool pqi_is_firmware_feature_enabled(
6250 struct pqi_config_table_firmware_features *firmware_features,
6251 void __iomem *firmware_features_iomem_addr,
6252 unsigned int bit_position)
6253{
6254 unsigned int byte_index;
6255 u8 __iomem *features_enabled_iomem_addr;
6256
6257 byte_index = (bit_position / BITS_PER_BYTE) +
6258 (le16_to_cpu(firmware_features->num_elements) * 2);
6259
6260 features_enabled_iomem_addr = firmware_features_iomem_addr +
6261 offsetof(struct pqi_config_table_firmware_features,
6262 features_supported) + byte_index;
6263
6264 return *((__force u8 *)features_enabled_iomem_addr) &
6265 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6266}
6267
6268static inline void pqi_request_firmware_feature(
6269 struct pqi_config_table_firmware_features *firmware_features,
6270 unsigned int bit_position)
6271{
6272 unsigned int byte_index;
6273
6274 byte_index = (bit_position / BITS_PER_BYTE) +
6275 le16_to_cpu(firmware_features->num_elements);
6276
6277 firmware_features->features_supported[byte_index] |=
6278 (1 << (bit_position % BITS_PER_BYTE));
6279}
6280
6281static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info,
6282 u16 first_section, u16 last_section)
6283{
6284 struct pqi_vendor_general_request request;
6285
6286 memset(&request, 0, sizeof(request));
6287
6288 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
6289 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
6290 &request.header.iu_length);
6291 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE,
6292 &request.function_code);
6293 put_unaligned_le16(first_section,
6294 &request.data.config_table_update.first_section);
6295 put_unaligned_le16(last_section,
6296 &request.data.config_table_update.last_section);
6297
6298 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6299 0, NULL, NO_TIMEOUT);
6300}
6301
6302static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info,
6303 struct pqi_config_table_firmware_features *firmware_features,
6304 void __iomem *firmware_features_iomem_addr)
6305{
6306 void *features_requested;
6307 void __iomem *features_requested_iomem_addr;
6308
6309 features_requested = firmware_features->features_supported +
6310 le16_to_cpu(firmware_features->num_elements);
6311
6312 features_requested_iomem_addr = firmware_features_iomem_addr +
6313 (features_requested - (void *)firmware_features);
6314
6315 memcpy_toio(features_requested_iomem_addr, features_requested,
6316 le16_to_cpu(firmware_features->num_elements));
6317
6318 return pqi_config_table_update(ctrl_info,
6319 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES,
6320 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES);
6321}
6322
6323struct pqi_firmware_feature {
6324 char *feature_name;
6325 unsigned int feature_bit;
6326 bool supported;
6327 bool enabled;
6328 void (*feature_status)(struct pqi_ctrl_info *ctrl_info,
6329 struct pqi_firmware_feature *firmware_feature);
6330};
6331
6332static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info,
6333 struct pqi_firmware_feature *firmware_feature)
6334{
6335 if (!firmware_feature->supported) {
6336 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n",
6337 firmware_feature->feature_name);
6338 return;
6339 }
6340
6341 if (firmware_feature->enabled) {
6342 dev_info(&ctrl_info->pci_dev->dev,
6343 "%s enabled\n", firmware_feature->feature_name);
6344 return;
6345 }
6346
6347 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n",
6348 firmware_feature->feature_name);
6349}
6350
6351static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info,
6352 struct pqi_firmware_feature *firmware_feature)
6353{
6354 if (firmware_feature->feature_status)
6355 firmware_feature->feature_status(ctrl_info, firmware_feature);
6356}
6357
6358static DEFINE_MUTEX(pqi_firmware_features_mutex);
6359
6360static struct pqi_firmware_feature pqi_firmware_features[] = {
6361 {
6362 .feature_name = "Online Firmware Activation",
6363 .feature_bit = PQI_FIRMWARE_FEATURE_OFA,
6364 .feature_status = pqi_firmware_feature_status,
6365 },
6366 {
6367 .feature_name = "Serial Management Protocol",
6368 .feature_bit = PQI_FIRMWARE_FEATURE_SMP,
6369 .feature_status = pqi_firmware_feature_status,
6370 },
6371};
6372
6373static void pqi_process_firmware_features(
6374 struct pqi_config_table_section_info *section_info)
6375{
6376 int rc;
6377 struct pqi_ctrl_info *ctrl_info;
6378 struct pqi_config_table_firmware_features *firmware_features;
6379 void __iomem *firmware_features_iomem_addr;
6380 unsigned int i;
6381 unsigned int num_features_supported;
6382
6383 ctrl_info = section_info->ctrl_info;
6384 firmware_features = section_info->section;
6385 firmware_features_iomem_addr = section_info->section_iomem_addr;
6386
6387 for (i = 0, num_features_supported = 0;
6388 i < ARRAY_SIZE(pqi_firmware_features); i++) {
6389 if (pqi_is_firmware_feature_supported(firmware_features,
6390 pqi_firmware_features[i].feature_bit)) {
6391 pqi_firmware_features[i].supported = true;
6392 num_features_supported++;
6393 } else {
6394 pqi_firmware_feature_update(ctrl_info,
6395 &pqi_firmware_features[i]);
6396 }
6397 }
6398
6399 if (num_features_supported == 0)
6400 return;
6401
6402 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6403 if (!pqi_firmware_features[i].supported)
6404 continue;
6405 pqi_request_firmware_feature(firmware_features,
6406 pqi_firmware_features[i].feature_bit);
6407 }
6408
6409 rc = pqi_enable_firmware_features(ctrl_info, firmware_features,
6410 firmware_features_iomem_addr);
6411 if (rc) {
6412 dev_err(&ctrl_info->pci_dev->dev,
6413 "failed to enable firmware features in PQI configuration table\n");
6414 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6415 if (!pqi_firmware_features[i].supported)
6416 continue;
6417 pqi_firmware_feature_update(ctrl_info,
6418 &pqi_firmware_features[i]);
6419 }
6420 return;
6421 }
6422
6423 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6424 if (!pqi_firmware_features[i].supported)
6425 continue;
6426 if (pqi_is_firmware_feature_enabled(firmware_features,
6427 firmware_features_iomem_addr,
6428 pqi_firmware_features[i].feature_bit))
6429 pqi_firmware_features[i].enabled = true;
6430 pqi_firmware_feature_update(ctrl_info,
6431 &pqi_firmware_features[i]);
6432 }
6433}
6434
6435static void pqi_init_firmware_features(void)
6436{
6437 unsigned int i;
6438
6439 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6440 pqi_firmware_features[i].supported = false;
6441 pqi_firmware_features[i].enabled = false;
6442 }
6443}
6444
6445static void pqi_process_firmware_features_section(
6446 struct pqi_config_table_section_info *section_info)
6447{
6448 mutex_lock(&pqi_firmware_features_mutex);
6449 pqi_init_firmware_features();
6450 pqi_process_firmware_features(section_info);
6451 mutex_unlock(&pqi_firmware_features_mutex);
6452}
6453
98f87667
KB		 6454static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
6455{
6456 u32 table_length;
6457 u32 section_offset;
6458 void __iomem *table_iomem_addr;
6459 struct pqi_config_table *config_table;
6460 struct pqi_config_table_section_header *section;
b212c251 6461 struct pqi_config_table_section_info section_info;
98f87667
KB		 6462
6463 table_length = ctrl_info->config_table_length;
b212c251
KB		 6464 if (table_length == 0)
6465 return 0;
98f87667
KB		 6466
6467 config_table = kmalloc(table_length, GFP_KERNEL);
6468 if (!config_table) {
6469 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 6470 "failed to allocate memory for PQI configuration table\n");
98f87667
KB		 6471 return -ENOMEM;
6472 }
6473
6474 /*
6475 * Copy the config table contents from I/O memory space into the
6476 * temporary buffer.
6477 */
6478 table_iomem_addr = ctrl_info->iomem_base +
6479 ctrl_info->config_table_offset;
6480 memcpy_fromio(config_table, table_iomem_addr, table_length);
6481
b212c251 6482 section_info.ctrl_info = ctrl_info;
98f87667
KB		 6483 section_offset =
6484 get_unaligned_le32(&config_table->first_section_offset);
6485
6486 while (section_offset) {
6487 section = (void *)config_table + section_offset;
6488
b212c251
KB		 6489 section_info.section = section;
6490 section_info.section_offset = section_offset;
6491 section_info.section_iomem_addr =
6492 table_iomem_addr + section_offset;
6493
98f87667 6494 switch (get_unaligned_le16(&section->section_id)) {
b212c251
KB		 6495 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES:
6496 pqi_process_firmware_features_section(&section_info);
6497 break;
98f87667 6498 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
5a259e32
KB		 6499 if (pqi_disable_heartbeat)
6500 dev_warn(&ctrl_info->pci_dev->dev,
6501 "heartbeat disabled by module parameter\n");
6502 else
6503 ctrl_info->heartbeat_counter =
6504 table_iomem_addr +
6505 section_offset +
6506 offsetof(
6507 struct pqi_config_table_heartbeat,
6508 heartbeat_counter);
98f87667
KB		 6509 break;
6510 }
6511
6512 section_offset =
6513 get_unaligned_le16(&section->next_section_offset);
6514 }
6515
6516 kfree(config_table);
6517
6518 return 0;
6519}
6520
162d7753
KB		 6521/* Switches the controller from PQI mode back into SIS mode. */
6522
6523static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
6524{
6525 int rc;
6526
061ef06a 6527 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
162d7753
KB		 6528 rc = pqi_reset(ctrl_info);
6529 if (rc)
6530 return rc;
4f078e24
KB		 6531 rc = sis_reenable_sis_mode(ctrl_info);
6532 if (rc) {
6533 dev_err(&ctrl_info->pci_dev->dev,
6534 "re-enabling SIS mode failed with error %d\n", rc);
6535 return rc;
6536 }
162d7753
KB		 6537 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6538
6539 return 0;
6540}
6541
6542/*
6543 * If the controller isn't already in SIS mode, this function forces it into
6544 * SIS mode.
6545 */
6546
6547static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
ff6abb73
KB		 6548{
6549 if (!sis_is_firmware_running(ctrl_info))
6550 return -ENXIO;
6551
162d7753
KB		 6552 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
6553 return 0;
6554
6555 if (sis_is_kernel_up(ctrl_info)) {
6556 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6557 return 0;
ff6abb73
KB		 6558 }
6559
162d7753 6560 return pqi_revert_to_sis_mode(ctrl_info);
ff6abb73
KB		 6561}
6562
6c223761
KB		 6563static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
6564{
6565 int rc;
6566
162d7753
KB		 6567 rc = pqi_force_sis_mode(ctrl_info);
6568 if (rc)
6569 return rc;
6c223761
KB		 6570
6571 /*
6572 * Wait until the controller is ready to start accepting SIS
6573 * commands.
6574 */
6575 rc = sis_wait_for_ctrl_ready(ctrl_info);
8845fdfa 6576 if (rc)
6c223761 6577 return rc;
6c223761
KB		 6578
6579 /*
6580 * Get the controller properties. This allows us to determine
6581 * whether or not it supports PQI mode.
6582 */
6583 rc = sis_get_ctrl_properties(ctrl_info);
6584 if (rc) {
6585 dev_err(&ctrl_info->pci_dev->dev,
6586 "error obtaining controller properties\n");
6587 return rc;
6588 }
6589
6590 rc = sis_get_pqi_capabilities(ctrl_info);
6591 if (rc) {
6592 dev_err(&ctrl_info->pci_dev->dev,
6593 "error obtaining controller capabilities\n");
6594 return rc;
6595 }
6596
d727a776
KB		 6597 if (reset_devices) {
6598 if (ctrl_info->max_outstanding_requests >
6599 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
6600 ctrl_info->max_outstanding_requests =
6601 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
6602 } else {
6603 if (ctrl_info->max_outstanding_requests >
6604 PQI_MAX_OUTSTANDING_REQUESTS)
6605 ctrl_info->max_outstanding_requests =
6606 PQI_MAX_OUTSTANDING_REQUESTS;
6607 }
6c223761
KB		 6608
6609 pqi_calculate_io_resources(ctrl_info);
6610
6611 rc = pqi_alloc_error_buffer(ctrl_info);
6612 if (rc) {
6613 dev_err(&ctrl_info->pci_dev->dev,
6614 "failed to allocate PQI error buffer\n");
6615 return rc;
6616 }
6617
6618 /*
6619 * If the function we are about to call succeeds, the
6620 * controller will transition from legacy SIS mode
6621 * into PQI mode.
6622 */
6623 rc = sis_init_base_struct_addr(ctrl_info);
6624 if (rc) {
6625 dev_err(&ctrl_info->pci_dev->dev,
6626 "error initializing PQI mode\n");
6627 return rc;
6628 }
6629
6630 /* Wait for the controller to complete the SIS -> PQI transition. */
6631 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6632 if (rc) {
6633 dev_err(&ctrl_info->pci_dev->dev,
6634 "transition to PQI mode failed\n");
6635 return rc;
6636 }
6637
6638 /* From here on, we are running in PQI mode. */
6639 ctrl_info->pqi_mode_enabled = true;
ff6abb73 6640 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6c223761
KB		 6641
6642 rc = pqi_alloc_admin_queues(ctrl_info);
6643 if (rc) {
6644 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 6645 "failed to allocate admin queues\n");
6c223761
KB		 6646 return rc;
6647 }
6648
6649 rc = pqi_create_admin_queues(ctrl_info);
6650 if (rc) {
6651 dev_err(&ctrl_info->pci_dev->dev,
6652 "error creating admin queues\n");
6653 return rc;
6654 }
6655
6656 rc = pqi_report_device_capability(ctrl_info);
6657 if (rc) {
6658 dev_err(&ctrl_info->pci_dev->dev,
6659 "obtaining device capability failed\n");
6660 return rc;
6661 }
6662
6663 rc = pqi_validate_device_capability(ctrl_info);
6664 if (rc)
6665 return rc;
6666
6667 pqi_calculate_queue_resources(ctrl_info);
6668
6669 rc = pqi_enable_msix_interrupts(ctrl_info);
6670 if (rc)
6671 return rc;
6672
6673 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
6674 ctrl_info->max_msix_vectors =
6675 ctrl_info->num_msix_vectors_enabled;
6676 pqi_calculate_queue_resources(ctrl_info);
6677 }
6678
6679 rc = pqi_alloc_io_resources(ctrl_info);
6680 if (rc)
6681 return rc;
6682
6683 rc = pqi_alloc_operational_queues(ctrl_info);
d87d5474
KB		 6684 if (rc) {
6685 dev_err(&ctrl_info->pci_dev->dev,
6686 "failed to allocate operational queues\n");
6c223761 6687 return rc;
d87d5474 6688 }
6c223761
KB		 6689
6690 pqi_init_operational_queues(ctrl_info);
6691
6692 rc = pqi_request_irqs(ctrl_info);
6693 if (rc)
6694 return rc;
6695
6c223761
KB		 6696 rc = pqi_create_queues(ctrl_info);
6697 if (rc)
6698 return rc;
6699
061ef06a
KB		 6700 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
6701
6702 ctrl_info->controller_online = true;
b212c251
KB		 6703
6704 rc = pqi_process_config_table(ctrl_info);
6705 if (rc)
6706 return rc;
6707
061ef06a 6708 pqi_start_heartbeat_timer(ctrl_info);
6c223761 6709
6a50d6ad 6710 rc = pqi_enable_events(ctrl_info);
6c223761
KB		 6711 if (rc) {
6712 dev_err(&ctrl_info->pci_dev->dev,
6a50d6ad 6713 "error enabling events\n");
6c223761
KB		 6714 return rc;
6715 }
6716
6c223761
KB		 6717 /* Register with the SCSI subsystem. */
6718 rc = pqi_register_scsi(ctrl_info);
6719 if (rc)
6720 return rc;
6721
6722 rc = pqi_get_ctrl_firmware_version(ctrl_info);
6723 if (rc) {
6724 dev_err(&ctrl_info->pci_dev->dev,
6725 "error obtaining firmware version\n");
6726 return rc;
6727 }
6728
171c2865
DC		 6729 rc = pqi_set_diag_rescan(ctrl_info);
6730 if (rc) {
6731 dev_err(&ctrl_info->pci_dev->dev,
6732 "error enabling multi-lun rescan\n");
6733 return rc;
6734 }
6735
6c223761
KB		 6736 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
6737 if (rc) {
6738 dev_err(&ctrl_info->pci_dev->dev,
6739 "error updating host wellness\n");
6740 return rc;
6741 }
6742
6743 pqi_schedule_update_time_worker(ctrl_info);
6744
6745 pqi_scan_scsi_devices(ctrl_info);
6746
6747 return 0;
6748}
6749
061ef06a
KB		 6750static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
6751{
6752 unsigned int i;
6753 struct pqi_admin_queues *admin_queues;
6754 struct pqi_event_queue *event_queue;
6755
6756 admin_queues = &ctrl_info->admin_queues;
6757 admin_queues->iq_pi_copy = 0;
6758 admin_queues->oq_ci_copy = 0;
dac12fbc 6759 writel(0, admin_queues->oq_pi);
061ef06a
KB		 6760
6761 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
6762 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
6763 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
6764 ctrl_info->queue_groups[i].oq_ci_copy = 0;
6765
dac12fbc
KB		 6766 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]);
6767 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]);
6768 writel(0, ctrl_info->queue_groups[i].oq_pi);
061ef06a
KB		 6769 }
6770
6771 event_queue = &ctrl_info->event_queue;
dac12fbc 6772 writel(0, event_queue->oq_pi);
061ef06a
KB		 6773 event_queue->oq_ci_copy = 0;
6774}
6775
6776static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
6777{
6778 int rc;
6779
6780 rc = pqi_force_sis_mode(ctrl_info);
6781 if (rc)
6782 return rc;
6783
6784 /*
6785 * Wait until the controller is ready to start accepting SIS
6786 * commands.
6787 */
6788 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
6789 if (rc)
6790 return rc;
6791
6792 /*
6793 * If the function we are about to call succeeds, the
6794 * controller will transition from legacy SIS mode
6795 * into PQI mode.
6796 */
6797 rc = sis_init_base_struct_addr(ctrl_info);
6798 if (rc) {
6799 dev_err(&ctrl_info->pci_dev->dev,
6800 "error initializing PQI mode\n");
6801 return rc;
6802 }
6803
6804 /* Wait for the controller to complete the SIS -> PQI transition. */
6805 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6806 if (rc) {
6807 dev_err(&ctrl_info->pci_dev->dev,
6808 "transition to PQI mode failed\n");
6809 return rc;
6810 }
6811
6812 /* From here on, we are running in PQI mode. */
6813 ctrl_info->pqi_mode_enabled = true;
6814 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6815
6816 pqi_reinit_queues(ctrl_info);
6817
6818 rc = pqi_create_admin_queues(ctrl_info);
6819 if (rc) {
6820 dev_err(&ctrl_info->pci_dev->dev,
6821 "error creating admin queues\n");
6822 return rc;
6823 }
6824
6825 rc = pqi_create_queues(ctrl_info);
6826 if (rc)
6827 return rc;
6828
6829 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
6830
6831 ctrl_info->controller_online = true;
6832 pqi_start_heartbeat_timer(ctrl_info);
6833 pqi_ctrl_unblock_requests(ctrl_info);
6834
6835 rc = pqi_enable_events(ctrl_info);
6836 if (rc) {
6837 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 6838 "error enabling events\n");
061ef06a
KB		 6839 return rc;
6840 }
6841
171c2865
DC		 6842 rc = pqi_set_diag_rescan(ctrl_info);
6843 if (rc) {
6844 dev_err(&ctrl_info->pci_dev->dev,
6845 "error enabling multi-lun rescan\n");
6846 return rc;
6847 }
6848
061ef06a
KB		 6849 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
6850 if (rc) {
6851 dev_err(&ctrl_info->pci_dev->dev,
6852 "error updating host wellness\n");
6853 return rc;
6854 }
6855
6856 pqi_schedule_update_time_worker(ctrl_info);
6857
6858 pqi_scan_scsi_devices(ctrl_info);
6859
6860 return 0;
6861}
6862
a81ed5f3
KB		 6863static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
6864 u16 timeout)
6865{
6866 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
6867 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
6868}
6869
6c223761
KB		 6870static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
6871{
6872 int rc;
6873 u64 mask;
6874
6875 rc = pci_enable_device(ctrl_info->pci_dev);
6876 if (rc) {
6877 dev_err(&ctrl_info->pci_dev->dev,
6878 "failed to enable PCI device\n");
6879 return rc;
6880 }
6881
6882 if (sizeof(dma_addr_t) > 4)
6883 mask = DMA_BIT_MASK(64);
6884 else
6885 mask = DMA_BIT_MASK(32);
6886
6887 rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask);
6888 if (rc) {
6889 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
6890 goto disable_device;
6891 }
6892
6893 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
6894 if (rc) {
6895 dev_err(&ctrl_info->pci_dev->dev,
6896 "failed to obtain PCI resources\n");
6897 goto disable_device;
6898 }
6899
6900 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start(
6901 ctrl_info->pci_dev, 0),
6902 sizeof(struct pqi_ctrl_registers));
6903 if (!ctrl_info->iomem_base) {
6904 dev_err(&ctrl_info->pci_dev->dev,
6905 "failed to map memory for controller registers\n");
6906 rc = -ENOMEM;
6907 goto release_regions;
6908 }
6909
a81ed5f3
KB		 6910#define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
6911
6912 /* Increase the PCIe completion timeout. */
6913 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
6914 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
6915 if (rc) {
6916 dev_err(&ctrl_info->pci_dev->dev,
6917 "failed to set PCIe completion timeout\n");
6918 goto release_regions;
6919 }
6920
6c223761
KB		 6921 /* Enable bus mastering. */
6922 pci_set_master(ctrl_info->pci_dev);
6923
cbe0c7b1
KB		 6924 ctrl_info->registers = ctrl_info->iomem_base;
6925 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
6926
6c223761
KB		 6927 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
6928
6929 return 0;
6930
6931release_regions:
6932 pci_release_regions(ctrl_info->pci_dev);
6933disable_device:
6934 pci_disable_device(ctrl_info->pci_dev);
6935
6936 return rc;
6937}
6938
6939static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
6940{
6941 iounmap(ctrl_info->iomem_base);
6942 pci_release_regions(ctrl_info->pci_dev);
cbe0c7b1
KB		 6943 if (pci_is_enabled(ctrl_info->pci_dev))
6944 pci_disable_device(ctrl_info->pci_dev);
6c223761
KB		 6945 pci_set_drvdata(ctrl_info->pci_dev, NULL);
6946}
6947
6948static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
6949{
6950 struct pqi_ctrl_info *ctrl_info;
6951
6952 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
6953 GFP_KERNEL, numa_node);
6954 if (!ctrl_info)
6955 return NULL;
6956
6957 mutex_init(&ctrl_info->scan_mutex);
7561a7e4 6958 mutex_init(&ctrl_info->lun_reset_mutex);
6c223761
KB		 6959
6960 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
6961 spin_lock_init(&ctrl_info->scsi_device_list_lock);
6962
6963 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
6964 atomic_set(&ctrl_info->num_interrupts, 0);
6965
6966 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
6967 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
6968
74a0f573 6969 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
5f310425 6970 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
98f87667 6971
6c223761
KB		 6972 sema_init(&ctrl_info->sync_request_sem,
6973 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
7561a7e4 6974 init_waitqueue_head(&ctrl_info->block_requests_wait);
6c223761 6975
376fb880
KB		 6976 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
6977 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
6978 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
6979 pqi_raid_bypass_retry_worker);
6980
6c223761 6981 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
061ef06a 6982 ctrl_info->irq_mode = IRQ_MODE_NONE;
6c223761
KB		 6983 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
6984
6985 return ctrl_info;
6986}
6987
6988static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
6989{
6990 kfree(ctrl_info);
6991}
6992
6993static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
6994{
98bf061b
KB		 6995 pqi_free_irqs(ctrl_info);
6996 pqi_disable_msix_interrupts(ctrl_info);
6c223761
KB		 6997}
6998
6999static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
7000{
7001 pqi_stop_heartbeat_timer(ctrl_info);
7002 pqi_free_interrupts(ctrl_info);
7003 if (ctrl_info->queue_memory_base)
7004 dma_free_coherent(&ctrl_info->pci_dev->dev,
7005 ctrl_info->queue_memory_length,
7006 ctrl_info->queue_memory_base,
7007 ctrl_info->queue_memory_base_dma_handle);
7008 if (ctrl_info->admin_queue_memory_base)
7009 dma_free_coherent(&ctrl_info->pci_dev->dev,
7010 ctrl_info->admin_queue_memory_length,
7011 ctrl_info->admin_queue_memory_base,
7012 ctrl_info->admin_queue_memory_base_dma_handle);
7013 pqi_free_all_io_requests(ctrl_info);
7014 if (ctrl_info->error_buffer)
7015 dma_free_coherent(&ctrl_info->pci_dev->dev,
7016 ctrl_info->error_buffer_length,
7017 ctrl_info->error_buffer,
7018 ctrl_info->error_buffer_dma_handle);
7019 if (ctrl_info->iomem_base)
7020 pqi_cleanup_pci_init(ctrl_info);
7021 pqi_free_ctrl_info(ctrl_info);
7022}
7023
7024static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
7025{
061ef06a
KB		 7026 pqi_cancel_rescan_worker(ctrl_info);
7027 pqi_cancel_update_time_worker(ctrl_info);
e57a1f9b
KB		 7028 pqi_remove_all_scsi_devices(ctrl_info);
7029 pqi_unregister_scsi(ctrl_info);
162d7753
KB		 7030 if (ctrl_info->pqi_mode_enabled)
7031 pqi_revert_to_sis_mode(ctrl_info);
6c223761
KB		 7032 pqi_free_ctrl_resources(ctrl_info);
7033}
7034
3c50976f
KB		 7035static void pqi_perform_lockup_action(void)
7036{
7037 switch (pqi_lockup_action) {
7038 case PANIC:
7039 panic("FATAL: Smart Family Controller lockup detected");
7040 break;
7041 case REBOOT:
7042 emergency_restart();
7043 break;
7044 case NONE:
7045 default:
7046 break;
7047 }
7048}
7049
5f310425
KB		 7050static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
7051 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
7052 .status = SAM_STAT_CHECK_CONDITION,
7053};
7054
7055static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 7056{
7057 unsigned int i;
376fb880 7058 struct pqi_io_request *io_request;
376fb880
KB		 7059 struct scsi_cmnd *scmd;
7060
5f310425
KB		 7061 for (i = 0; i < ctrl_info->max_io_slots; i++) {
7062 io_request = &ctrl_info->io_request_pool[i];
7063 if (atomic_read(&io_request->refcount) == 0)
7064 continue;
376fb880 7065
5f310425
KB		 7066 scmd = io_request->scmd;
7067 if (scmd) {
7068 set_host_byte(scmd, DID_NO_CONNECT);
7069 } else {
7070 io_request->status = -ENXIO;
7071 io_request->error_info =
7072 &pqi_ctrl_offline_raid_error_info;
376fb880 7073 }
5f310425
KB		 7074
7075 io_request->io_complete_callback(io_request,
7076 io_request->context);
376fb880
KB		 7077 }
7078}
7079
5f310425 7080static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
376fb880 7081{
5f310425
KB		 7082 pqi_perform_lockup_action();
7083 pqi_stop_heartbeat_timer(ctrl_info);
7084 pqi_free_interrupts(ctrl_info);
7085 pqi_cancel_rescan_worker(ctrl_info);
7086 pqi_cancel_update_time_worker(ctrl_info);
7087 pqi_ctrl_wait_until_quiesced(ctrl_info);
7088 pqi_fail_all_outstanding_requests(ctrl_info);
7089 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
7090 pqi_ctrl_unblock_requests(ctrl_info);
7091}
7092
7093static void pqi_ctrl_offline_worker(struct work_struct *work)
7094{
7095 struct pqi_ctrl_info *ctrl_info;
7096
7097 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
7098 pqi_take_ctrl_offline_deferred(ctrl_info);
376fb880
KB		 7099}
7100
7101static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
7102{
5f310425
KB		 7103 if (!ctrl_info->controller_online)
7104 return;
7105
376fb880 7106 ctrl_info->controller_online = false;
5f310425
KB		 7107 ctrl_info->pqi_mode_enabled = false;
7108 pqi_ctrl_block_requests(ctrl_info);
5a259e32
KB		 7109 if (!pqi_disable_ctrl_shutdown)
7110 sis_shutdown_ctrl(ctrl_info);
376fb880
KB		 7111 pci_disable_device(ctrl_info->pci_dev);
7112 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
5f310425 7113 schedule_work(&ctrl_info->ctrl_offline_work);
376fb880
KB		 7114}
7115
d91d7820 7116static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
6c223761
KB		 7117 const struct pci_device_id *id)
7118{
7119 char *ctrl_description;
7120
37b36847 7121 if (id->driver_data)
6c223761 7122 ctrl_description = (char *)id->driver_data;
37b36847
KB		 7123 else
7124 ctrl_description = "Microsemi Smart Family Controller";
6c223761 7125
d91d7820 7126 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
6c223761
KB		 7127}
7128
d91d7820
KB		 7129static int pqi_pci_probe(struct pci_dev *pci_dev,
7130 const struct pci_device_id *id)
6c223761
KB		 7131{
7132 int rc;
7133 int node;
7134 struct pqi_ctrl_info *ctrl_info;
7135
d91d7820 7136 pqi_print_ctrl_info(pci_dev, id);
6c223761
KB		 7137
7138 if (pqi_disable_device_id_wildcards &&
7139 id->subvendor == PCI_ANY_ID &&
7140 id->subdevice == PCI_ANY_ID) {
d91d7820 7141 dev_warn(&pci_dev->dev,
6c223761
KB		 7142 "controller not probed because device ID wildcards are disabled\n");
7143 return -ENODEV;
7144 }
7145
7146 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
d91d7820 7147 dev_warn(&pci_dev->dev,
6c223761
KB		 7148 "controller device ID matched using wildcards\n");
7149
d91d7820 7150 node = dev_to_node(&pci_dev->dev);
6c223761 7151 if (node == NUMA_NO_NODE)
d91d7820 7152 set_dev_node(&pci_dev->dev, 0);
6c223761
KB		 7153
7154 ctrl_info = pqi_alloc_ctrl_info(node);
7155 if (!ctrl_info) {
d91d7820 7156 dev_err(&pci_dev->dev,
6c223761
KB		 7157 "failed to allocate controller info block\n");
7158 return -ENOMEM;
7159 }
7160
d91d7820 7161 ctrl_info->pci_dev = pci_dev;
6c223761
KB		 7162
7163 rc = pqi_pci_init(ctrl_info);
7164 if (rc)
7165 goto error;
7166
7167 rc = pqi_ctrl_init(ctrl_info);
7168 if (rc)
7169 goto error;
7170
7171 return 0;
7172
7173error:
7174 pqi_remove_ctrl(ctrl_info);
7175
7176 return rc;
7177}
7178
d91d7820 7179static void pqi_pci_remove(struct pci_dev *pci_dev)
6c223761
KB		 7180{
7181 struct pqi_ctrl_info *ctrl_info;
7182
d91d7820 7183 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 7184 if (!ctrl_info)
7185 return;
7186
7187 pqi_remove_ctrl(ctrl_info);
7188}
7189
d91d7820 7190static void pqi_shutdown(struct pci_dev *pci_dev)
6c223761
KB		 7191{
7192 int rc;
7193 struct pqi_ctrl_info *ctrl_info;
7194
d91d7820 7195 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 7196 if (!ctrl_info)
7197 goto error;
7198
7199 /*
7200 * Write all data in the controller's battery-backed cache to
7201 * storage.
7202 */
58322fe0 7203 rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
b6d47811 7204 pqi_reset(ctrl_info);
6c223761
KB		 7205 if (rc == 0)
7206 return;
7207
7208error:
d91d7820 7209 dev_warn(&pci_dev->dev,
6c223761
KB		 7210 "unable to flush controller cache\n");
7211}
7212
3c50976f
KB		 7213static void pqi_process_lockup_action_param(void)
7214{
7215 unsigned int i;
7216
7217 if (!pqi_lockup_action_param)
7218 return;
7219
7220 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
7221 if (strcmp(pqi_lockup_action_param,
7222 pqi_lockup_actions[i].name) == 0) {
7223 pqi_lockup_action = pqi_lockup_actions[i].action;
7224 return;
7225 }
7226 }
7227
7228 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
7229 DRIVER_NAME_SHORT, pqi_lockup_action_param);
7230}
7231
7232static void pqi_process_module_params(void)
7233{
7234 pqi_process_lockup_action_param();
7235}
7236
5c146686 7237static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
061ef06a
KB		 7238{
7239 struct pqi_ctrl_info *ctrl_info;
7240
7241 ctrl_info = pci_get_drvdata(pci_dev);
7242
7243 pqi_disable_events(ctrl_info);
7244 pqi_cancel_update_time_worker(ctrl_info);
7245 pqi_cancel_rescan_worker(ctrl_info);
7246 pqi_wait_until_scan_finished(ctrl_info);
7247 pqi_wait_until_lun_reset_finished(ctrl_info);
58322fe0 7248 pqi_flush_cache(ctrl_info, SUSPEND);
061ef06a
KB		 7249 pqi_ctrl_block_requests(ctrl_info);
7250 pqi_ctrl_wait_until_quiesced(ctrl_info);
7251 pqi_wait_until_inbound_queues_empty(ctrl_info);
7252 pqi_ctrl_wait_for_pending_io(ctrl_info);
7253 pqi_stop_heartbeat_timer(ctrl_info);
7254
7255 if (state.event == PM_EVENT_FREEZE)
7256 return 0;
7257
7258 pci_save_state(pci_dev);
7259 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
7260
7261 ctrl_info->controller_online = false;
7262 ctrl_info->pqi_mode_enabled = false;
7263
7264 return 0;
7265}
7266
5c146686 7267static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
061ef06a
KB		 7268{
7269 int rc;
7270 struct pqi_ctrl_info *ctrl_info;
7271
7272 ctrl_info = pci_get_drvdata(pci_dev);
7273
7274 if (pci_dev->current_state != PCI_D0) {
7275 ctrl_info->max_hw_queue_index = 0;
7276 pqi_free_interrupts(ctrl_info);
7277 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
7278 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
7279 IRQF_SHARED, DRIVER_NAME_SHORT,
7280 &ctrl_info->queue_groups[0]);
7281 if (rc) {
7282 dev_err(&ctrl_info->pci_dev->dev,
7283 "irq %u init failed with error %d\n",
7284 pci_dev->irq, rc);
7285 return rc;
7286 }
7287 pqi_start_heartbeat_timer(ctrl_info);
7288 pqi_ctrl_unblock_requests(ctrl_info);
7289 return 0;
7290 }
7291
7292 pci_set_power_state(pci_dev, PCI_D0);
7293 pci_restore_state(pci_dev);
7294
7295 return pqi_ctrl_init_resume(ctrl_info);
7296}
7297
6c223761
KB		 7298/* Define the PCI IDs for the controllers that we support. */
7299static const struct pci_device_id pqi_pci_id_table[] = {
b0f9408b
KB		 7300 {
7301 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7302 0x105b, 0x1211)
7303 },
7304 {
7305 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7306 0x105b, 0x1321)
7307 },
7eddabff
KB		 7308 {
7309 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7310 0x152d, 0x8a22)
7311 },
7312 {
7313 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7314 0x152d, 0x8a23)
7315 },
7316 {
7317 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7318 0x152d, 0x8a24)
7319 },
7320 {
7321 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7322 0x152d, 0x8a36)
7323 },
7324 {
7325 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7326 0x152d, 0x8a37)
7327 },
b0f9408b
KB		 7328 {
7329 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7330 0x193d, 0x8460)
7331 },
7332 {
7333 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7334 0x193d, 0x8461)
7335 },
84a77fef
MB		 7336 {
7337 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7338 0x193d, 0xc460)
7339 },
7340 {
7341 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7342 0x193d, 0xc461)
7343 },
b0f9408b
KB		 7344 {
7345 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7346 0x193d, 0xf460)
7347 },
7348 {
7349 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7350 0x193d, 0xf461)
7351 },
7352 {
7353 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7354 0x1bd4, 0x0045)
7355 },
7356 {
7357 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7358 0x1bd4, 0x0046)
7359 },
7360 {
7361 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7362 0x1bd4, 0x0047)
7363 },
7364 {
7365 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7366 0x1bd4, 0x0048)
7367 },
9f8d05fa
KB		 7368 {
7369 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7370 0x1bd4, 0x004a)
7371 },
7372 {
7373 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7374 0x1bd4, 0x004b)
7375 },
7376 {
7377 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7378 0x1bd4, 0x004c)
7379 },
6c223761
KB		 7380 {
7381 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7382 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
7383 },
7384 {
7385 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 7386 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
6c223761
KB		 7387 },
7388 {
7389 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7390 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
6c223761
KB		 7391 },
7392 {
7393 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7394 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
6c223761
KB		 7395 },
7396 {
7397 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7398 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
6c223761
KB		 7399 },
7400 {
7401 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7402 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
6c223761
KB		 7403 },
7404 {
7405 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7406 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
6c223761
KB		 7407 },
7408 {
7409 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7410 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
6c223761
KB		 7411 },
7412 {
7413 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7414 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
6c223761 7415 },
55790064
KB		 7416 {
7417 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7418 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
7419 },
6c223761
KB		 7420 {
7421 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7422 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
6c223761
KB		 7423 },
7424 {
7425 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7426 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
6c223761
KB		 7427 },
7428 {
7429 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7430 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
6c223761
KB		 7431 },
7432 {
7433 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7434 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
6c223761
KB		 7435 },
7436 {
7437 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7438 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
6c223761
KB		 7439 },
7440 {
7441 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7442 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
6c223761
KB		 7443 },
7444 {
7445 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7446 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
6c223761
KB		 7447 },
7448 {
7449 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7450 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
6c223761
KB		 7451 },
7452 {
7453 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7454 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
6c223761 7455 },
55790064
KB		 7456 {
7457 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7458 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
7459 },
6c223761
KB		 7460 {
7461 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7462 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
6c223761
KB		 7463 },
7464 {
7465 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7466 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
6c223761
KB		 7467 },
7468 {
7469 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7470 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
6c223761
KB		 7471 },
7472 {
7473 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7474 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
6c223761
KB		 7475 },
7476 {
7477 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7478 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
6c223761 7479 },
b0f9408b
KB		 7480 {
7481 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7482 PCI_VENDOR_ID_ADAPTEC2, 0x1282)
7483 },
6c223761
KB		 7484 {
7485 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7486 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
6c223761
KB		 7487 },
7488 {
7489 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 7490 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
6c223761 7491 },
bd809e8d
KB		 7492 {
7493 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7494 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
7495 },
7496 {
7497 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7498 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
7499 },
6c223761
KB		 7500 {
7501 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff
KB		 7502 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
7503 },
9f8d05fa
KB		 7504 {
7505 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7506 PCI_VENDOR_ID_ADVANTECH, 0x8312)
7507 },
55790064
KB		 7508 {
7509 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7510 PCI_VENDOR_ID_DELL, 0x1fe0)
7511 },
7eddabff
KB		 7512 {
7513 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7514 PCI_VENDOR_ID_HP, 0x0600)
7515 },
7516 {
7517 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7518 PCI_VENDOR_ID_HP, 0x0601)
7519 },
7520 {
7521 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7522 PCI_VENDOR_ID_HP, 0x0602)
7523 },
7524 {
7525 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7526 PCI_VENDOR_ID_HP, 0x0603)
7527 },
7528 {
7529 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 7530 PCI_VENDOR_ID_HP, 0x0609)
7eddabff
KB		 7531 },
7532 {
7533 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7534 PCI_VENDOR_ID_HP, 0x0650)
7535 },
7536 {
7537 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7538 PCI_VENDOR_ID_HP, 0x0651)
7539 },
7540 {
7541 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7542 PCI_VENDOR_ID_HP, 0x0652)
7543 },
7544 {
7545 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7546 PCI_VENDOR_ID_HP, 0x0653)
7547 },
7548 {
7549 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7550 PCI_VENDOR_ID_HP, 0x0654)
7551 },
7552 {
7553 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7554 PCI_VENDOR_ID_HP, 0x0655)
7555 },
7eddabff
KB		 7556 {
7557 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7558 PCI_VENDOR_ID_HP, 0x0700)
7559 },
7560 {
7561 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7562 PCI_VENDOR_ID_HP, 0x0701)
6c223761
KB		 7563 },
7564 {
7565 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7566 PCI_VENDOR_ID_HP, 0x1001)
7567 },
7568 {
7569 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7570 PCI_VENDOR_ID_HP, 0x1100)
7571 },
7572 {
7573 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7574 PCI_VENDOR_ID_HP, 0x1101)
7575 },
6c223761
KB		 7576 {
7577 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7578 PCI_ANY_ID, PCI_ANY_ID)
7579 },
7580 { 0 }
7581};
7582
7583MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
7584
7585static struct pci_driver pqi_pci_driver = {
7586 .name = DRIVER_NAME_SHORT,
7587 .id_table = pqi_pci_id_table,
7588 .probe = pqi_pci_probe,
7589 .remove = pqi_pci_remove,
7590 .shutdown = pqi_shutdown,
061ef06a
KB		 7591#if defined(CONFIG_PM)
7592 .suspend = pqi_suspend,
7593 .resume = pqi_resume,
7594#endif
6c223761
KB		 7595};
7596
7597static int __init pqi_init(void)
7598{
7599 int rc;
7600
7601 pr_info(DRIVER_NAME "\n");
7602
7603 pqi_sas_transport_template =
7604 sas_attach_transport(&pqi_sas_transport_functions);
7605 if (!pqi_sas_transport_template)
7606 return -ENODEV;
7607
3c50976f
KB		 7608 pqi_process_module_params();
7609
6c223761
KB		 7610 rc = pci_register_driver(&pqi_pci_driver);
7611 if (rc)
7612 sas_release_transport(pqi_sas_transport_template);
7613
7614 return rc;
7615}
7616
7617static void __exit pqi_cleanup(void)
7618{
7619 pci_unregister_driver(&pqi_pci_driver);
7620 sas_release_transport(pqi_sas_transport_template);
7621}
7622
7623module_init(pqi_init);
7624module_exit(pqi_cleanup);
7625
7626static void __attribute__((unused)) verify_structures(void)
7627{
7628 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7629 sis_host_to_ctrl_doorbell) != 0x20);
7630 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7631 sis_interrupt_mask) != 0x34);
7632 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7633 sis_ctrl_to_host_doorbell) != 0x9c);
7634 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7635 sis_ctrl_to_host_doorbell_clear) != 0xa0);
ff6abb73
KB		 7636 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7637 sis_driver_scratch) != 0xb0);
6c223761
KB		 7638 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7639 sis_firmware_status) != 0xbc);
7640 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7641 sis_mailbox) != 0x1000);
7642 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7643 pqi_registers) != 0x4000);
7644
7645 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7646 iu_type) != 0x0);
7647 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7648 iu_length) != 0x2);
7649 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7650 response_queue_id) != 0x4);
7651 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7652 work_area) != 0x6);
7653 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
7654
7655 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7656 status) != 0x0);
7657 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7658 service_response) != 0x1);
7659 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7660 data_present) != 0x2);
7661 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7662 reserved) != 0x3);
7663 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7664 residual_count) != 0x4);
7665 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7666 data_length) != 0x8);
7667 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7668 reserved1) != 0xa);
7669 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7670 data) != 0xc);
7671 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
7672
7673 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7674 data_in_result) != 0x0);
7675 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7676 data_out_result) != 0x1);
7677 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7678 reserved) != 0x2);
7679 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7680 status) != 0x5);
7681 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7682 status_qualifier) != 0x6);
7683 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7684 sense_data_length) != 0x8);
7685 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7686 response_data_length) != 0xa);
7687 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7688 data_in_transferred) != 0xc);
7689 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7690 data_out_transferred) != 0x10);
7691 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7692 data) != 0x14);
7693 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
7694
7695 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7696 signature) != 0x0);
7697 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7698 function_and_status_code) != 0x8);
7699 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7700 max_admin_iq_elements) != 0x10);
7701 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7702 max_admin_oq_elements) != 0x11);
7703 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7704 admin_iq_element_length) != 0x12);
7705 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7706 admin_oq_element_length) != 0x13);
7707 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7708 max_reset_timeout) != 0x14);
7709 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7710 legacy_intx_status) != 0x18);
7711 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7712 legacy_intx_mask_set) != 0x1c);
7713 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7714 legacy_intx_mask_clear) != 0x20);
7715 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7716 device_status) != 0x40);
7717 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7718 admin_iq_pi_offset) != 0x48);
7719 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7720 admin_oq_ci_offset) != 0x50);
7721 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7722 admin_iq_element_array_addr) != 0x58);
7723 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7724 admin_oq_element_array_addr) != 0x60);
7725 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7726 admin_iq_ci_addr) != 0x68);
7727 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7728 admin_oq_pi_addr) != 0x70);
7729 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7730 admin_iq_num_elements) != 0x78);
7731 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7732 admin_oq_num_elements) != 0x79);
7733 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7734 admin_queue_int_msg_num) != 0x7a);
7735 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7736 device_error) != 0x80);
7737 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7738 error_details) != 0x88);
7739 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7740 device_reset) != 0x90);
7741 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7742 power_action) != 0x94);
7743 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
7744
7745 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7746 header.iu_type) != 0);
7747 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7748 header.iu_length) != 2);
7749 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7750 header.work_area) != 6);
7751 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7752 request_id) != 8);
7753 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7754 function_code) != 10);
7755 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7756 data.report_device_capability.buffer_length) != 44);
7757 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7758 data.report_device_capability.sg_descriptor) != 48);
7759 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7760 data.create_operational_iq.queue_id) != 12);
7761 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7762 data.create_operational_iq.element_array_addr) != 16);
7763 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7764 data.create_operational_iq.ci_addr) != 24);
7765 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7766 data.create_operational_iq.num_elements) != 32);
7767 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7768 data.create_operational_iq.element_length) != 34);
7769 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7770 data.create_operational_iq.queue_protocol) != 36);
7771 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7772 data.create_operational_oq.queue_id) != 12);
7773 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7774 data.create_operational_oq.element_array_addr) != 16);
7775 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7776 data.create_operational_oq.pi_addr) != 24);
7777 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7778 data.create_operational_oq.num_elements) != 32);
7779 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7780 data.create_operational_oq.element_length) != 34);
7781 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7782 data.create_operational_oq.queue_protocol) != 36);
7783 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7784 data.create_operational_oq.int_msg_num) != 40);
7785 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7786 data.create_operational_oq.coalescing_count) != 42);
7787 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7788 data.create_operational_oq.min_coalescing_time) != 44);
7789 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7790 data.create_operational_oq.max_coalescing_time) != 48);
7791 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7792 data.delete_operational_queue.queue_id) != 12);
7793 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
7794 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7795 data.create_operational_iq) != 64 - 11);
7796 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7797 data.create_operational_oq) != 64 - 11);
7798 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7799 data.delete_operational_queue) != 64 - 11);
7800
7801 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7802 header.iu_type) != 0);
7803 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7804 header.iu_length) != 2);
7805 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7806 header.work_area) != 6);
7807 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7808 request_id) != 8);
7809 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7810 function_code) != 10);
7811 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7812 status) != 11);
7813 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7814 data.create_operational_iq.status_descriptor) != 12);
7815 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7816 data.create_operational_iq.iq_pi_offset) != 16);
7817 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7818 data.create_operational_oq.status_descriptor) != 12);
7819 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7820 data.create_operational_oq.oq_ci_offset) != 16);
7821 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
7822
7823 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7824 header.iu_type) != 0);
7825 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7826 header.iu_length) != 2);
7827 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7828 header.response_queue_id) != 4);
7829 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7830 header.work_area) != 6);
7831 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7832 request_id) != 8);
7833 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7834 nexus_id) != 10);
7835 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7836 buffer_length) != 12);
7837 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7838 lun_number) != 16);
7839 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7840 protocol_specific) != 24);
7841 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7842 error_index) != 27);
7843 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7844 cdb) != 32);
7845 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7846 sg_descriptors) != 64);
7847 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
7848 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
7849
7850 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7851 header.iu_type) != 0);
7852 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7853 header.iu_length) != 2);
7854 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7855 header.response_queue_id) != 4);
7856 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7857 header.work_area) != 6);
7858 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7859 request_id) != 8);
7860 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7861 nexus_id) != 12);
7862 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7863 buffer_length) != 16);
7864 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7865 data_encryption_key_index) != 22);
7866 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7867 encrypt_tweak_lower) != 24);
7868 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7869 encrypt_tweak_upper) != 28);
7870 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7871 cdb) != 32);
7872 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7873 error_index) != 48);
7874 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7875 num_sg_descriptors) != 50);
7876 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7877 cdb_length) != 51);
7878 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7879 lun_number) != 52);
7880 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7881 sg_descriptors) != 64);
7882 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
7883 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
7884
7885 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7886 header.iu_type) != 0);
7887 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7888 header.iu_length) != 2);
7889 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7890 request_id) != 8);
7891 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7892 error_index) != 10);
7893
7894 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7895 header.iu_type) != 0);
7896 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7897 header.iu_length) != 2);
7898 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7899 header.response_queue_id) != 4);
7900 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7901 request_id) != 8);
7902 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7903 data.report_event_configuration.buffer_length) != 12);
7904 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7905 data.report_event_configuration.sg_descriptors) != 16);
7906 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7907 data.set_event_configuration.global_event_oq_id) != 10);
7908 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7909 data.set_event_configuration.buffer_length) != 12);
7910 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7911 data.set_event_configuration.sg_descriptors) != 16);
7912
7913 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
7914 max_inbound_iu_length) != 6);
7915 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
7916 max_outbound_iu_length) != 14);
7917 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
7918
7919 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7920 data_length) != 0);
7921 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7922 iq_arbitration_priority_support_bitmask) != 8);
7923 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7924 maximum_aw_a) != 9);
7925 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7926 maximum_aw_b) != 10);
7927 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7928 maximum_aw_c) != 11);
7929 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7930 max_inbound_queues) != 16);
7931 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7932 max_elements_per_iq) != 18);
7933 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7934 max_iq_element_length) != 24);
7935 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7936 min_iq_element_length) != 26);
7937 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7938 max_outbound_queues) != 30);
7939 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7940 max_elements_per_oq) != 32);
7941 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7942 intr_coalescing_time_granularity) != 34);
7943 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7944 max_oq_element_length) != 36);
7945 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7946 min_oq_element_length) != 38);
7947 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7948 iu_layer_descriptors) != 64);
7949 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
7950
7951 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
7952 event_type) != 0);
7953 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
7954 oq_id) != 2);
7955 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
7956
7957 BUILD_BUG_ON(offsetof(struct pqi_event_config,
7958 num_event_descriptors) != 2);
7959 BUILD_BUG_ON(offsetof(struct pqi_event_config,
7960 descriptors) != 4);
7961
061ef06a
KB		 7962 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
7963 ARRAY_SIZE(pqi_supported_event_types));
7964
6c223761
KB		 7965 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7966 header.iu_type) != 0);
7967 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7968 header.iu_length) != 2);
7969 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7970 event_type) != 8);
7971 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7972 event_id) != 10);
7973 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7974 additional_event_id) != 12);
7975 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7976 data) != 16);
7977 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
7978
7979 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7980 header.iu_type) != 0);
7981 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7982 header.iu_length) != 2);
7983 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7984 event_type) != 8);
7985 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7986 event_id) != 10);
7987 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7988 additional_event_id) != 12);
7989 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
7990
7991 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7992 header.iu_type) != 0);
7993 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7994 header.iu_length) != 2);
7995 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7996 request_id) != 8);
7997 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7998 nexus_id) != 10);
7999 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8000 lun_number) != 16);
8001 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8002 protocol_specific) != 24);
8003 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8004 outbound_queue_id_to_manage) != 26);
8005 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8006 request_id_to_manage) != 28);
8007 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8008 task_management_function) != 30);
8009 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
8010
8011 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8012 header.iu_type) != 0);
8013 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8014 header.iu_length) != 2);
8015 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8016 request_id) != 8);
8017 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8018 nexus_id) != 10);
8019 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8020 additional_response_info) != 12);
8021 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8022 response_code) != 15);
8023 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
8024
8025 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8026 configured_logical_drive_count) != 0);
8027 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8028 configuration_signature) != 1);
8029 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8030 firmware_version) != 5);
8031 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8032 extended_logical_unit_count) != 154);
8033 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8034 firmware_build_number) != 190);
8035 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8036 controller_mode) != 292);
8037
1be42f46
KB		 8038 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8039 phys_bay_in_box) != 115);
8040 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8041 device_type) != 120);
8042 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8043 redundant_path_present_map) != 1736);
8044 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8045 active_path_number) != 1738);
8046 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8047 alternate_paths_phys_connector) != 1739);
8048 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8049 alternate_paths_phys_box_on_port) != 1755);
8050 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8051 current_queue_depth_limit) != 1796);
8052 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
8053
6c223761
KB		 8054 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
8055 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
8056 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
8057 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8058 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
8059 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8060 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
8061 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
8062 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8063 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
8064 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
8065 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8066
8067 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
d727a776
KB		 8068 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
8069 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
6c223761 8070}
Linux 6.x block layer and io_uring tree(s)