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scsi: smartpqi: update controller ids
[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
b98117ca 43#define DRIVER_VERSION "1.1.2-125"
2d154f5f 44#define DRIVER_MAJOR 1
b98117ca
KB		 45#define DRIVER_MINOR 1
46#define DRIVER_RELEASE 2
47#define DRIVER_REVISION 125
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
179static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
180{
181 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
182}
183
184static inline struct pqi_ctrl_info *shost_to_hba(struct Scsi_Host *shost)
185{
186 void *hostdata = shost_priv(shost);
187
188 return *((struct pqi_ctrl_info **)hostdata);
189}
190
191static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
192{
193 return !device->is_physical_device;
194}
195
bd10cf0b
KB		 196static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
197{
198 return scsi3addr[2] != 0;
199}
200
6c223761
KB		 201static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
202{
203 return !ctrl_info->controller_online;
204}
205
206static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
207{
208 if (ctrl_info->controller_online)
209 if (!sis_is_firmware_running(ctrl_info))
210 pqi_take_ctrl_offline(ctrl_info);
211}
212
213static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
214{
215 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
216}
217
ff6abb73
KB		 218static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
219 struct pqi_ctrl_info *ctrl_info)
220{
221 return sis_read_driver_scratch(ctrl_info);
222}
223
224static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
225 enum pqi_ctrl_mode mode)
226{
227 sis_write_driver_scratch(ctrl_info, mode);
228}
229
7561a7e4
KB		 230static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
231{
232 ctrl_info->block_requests = true;
233 scsi_block_requests(ctrl_info->scsi_host);
234}
235
236static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
237{
238 ctrl_info->block_requests = false;
239 wake_up_all(&ctrl_info->block_requests_wait);
376fb880 240 pqi_retry_raid_bypass_requests(ctrl_info);
7561a7e4
KB		 241 scsi_unblock_requests(ctrl_info->scsi_host);
242}
243
244static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
245{
246 return ctrl_info->block_requests;
247}
248
249static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
250 unsigned long timeout_msecs)
251{
252 unsigned long remaining_msecs;
253
254 if (!pqi_ctrl_blocked(ctrl_info))
255 return timeout_msecs;
256
257 atomic_inc(&ctrl_info->num_blocked_threads);
258
259 if (timeout_msecs == NO_TIMEOUT) {
260 wait_event(ctrl_info->block_requests_wait,
261 !pqi_ctrl_blocked(ctrl_info));
262 remaining_msecs = timeout_msecs;
263 } else {
264 unsigned long remaining_jiffies;
265
266 remaining_jiffies =
267 wait_event_timeout(ctrl_info->block_requests_wait,
268 !pqi_ctrl_blocked(ctrl_info),
269 msecs_to_jiffies(timeout_msecs));
270 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
271 }
272
273 atomic_dec(&ctrl_info->num_blocked_threads);
274
275 return remaining_msecs;
276}
277
278static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info)
279{
280 atomic_inc(&ctrl_info->num_busy_threads);
281}
282
283static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info)
284{
285 atomic_dec(&ctrl_info->num_busy_threads);
286}
287
288static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
289{
290 while (atomic_read(&ctrl_info->num_busy_threads) >
291 atomic_read(&ctrl_info->num_blocked_threads))
292 usleep_range(1000, 2000);
293}
294
03b288cf
KB		 295static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
296{
297 return device->device_offline;
298}
299
7561a7e4
KB		 300static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
301{
302 device->in_reset = true;
303}
304
305static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
306{
307 device->in_reset = false;
308}
309
310static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
311{
312 return device->in_reset;
313}
6c223761 314
5f310425
KB		 315static inline void pqi_schedule_rescan_worker_with_delay(
316 struct pqi_ctrl_info *ctrl_info, unsigned long delay)
317{
318 if (pqi_ctrl_offline(ctrl_info))
319 return;
320
321 schedule_delayed_work(&ctrl_info->rescan_work, delay);
322}
323
6c223761
KB		 324static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
325{
5f310425
KB		 326 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
327}
328
329#define PQI_RESCAN_WORK_DELAY (10 * HZ)
330
331static inline void pqi_schedule_rescan_worker_delayed(
332 struct pqi_ctrl_info *ctrl_info)
333{
334 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
6c223761
KB		 335}
336
061ef06a
KB		 337static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
338{
339 cancel_delayed_work_sync(&ctrl_info->rescan_work);
340}
341
98f87667
KB		 342static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
343{
344 if (!ctrl_info->heartbeat_counter)
345 return 0;
346
347 return readl(ctrl_info->heartbeat_counter);
348}
349
6c223761
KB		 350static int pqi_map_single(struct pci_dev *pci_dev,
351 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
352 size_t buffer_length, int data_direction)
353{
354 dma_addr_t bus_address;
355
356 if (!buffer || buffer_length == 0 || data_direction == PCI_DMA_NONE)
357 return 0;
358
359 bus_address = pci_map_single(pci_dev, buffer, buffer_length,
360 data_direction);
361 if (pci_dma_mapping_error(pci_dev, bus_address))
362 return -ENOMEM;
363
364 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
365 put_unaligned_le32(buffer_length, &sg_descriptor->length);
366 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
367
368 return 0;
369}
370
371static void pqi_pci_unmap(struct pci_dev *pci_dev,
372 struct pqi_sg_descriptor *descriptors, int num_descriptors,
373 int data_direction)
374{
375 int i;
376
377 if (data_direction == PCI_DMA_NONE)
378 return;
379
380 for (i = 0; i < num_descriptors; i++)
381 pci_unmap_single(pci_dev,
382 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
383 get_unaligned_le32(&descriptors[i].length),
384 data_direction);
385}
386
387static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
388 struct pqi_raid_path_request *request, u8 cmd,
389 u8 *scsi3addr, void *buffer, size_t buffer_length,
390 u16 vpd_page, int *pci_direction)
391{
392 u8 *cdb;
393 int pci_dir;
394
395 memset(request, 0, sizeof(*request));
396
397 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
398 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
399 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
400 &request->header.iu_length);
401 put_unaligned_le32(buffer_length, &request->buffer_length);
402 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
403 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
404 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
405
406 cdb = request->cdb;
407
408 switch (cmd) {
409 case INQUIRY:
410 request->data_direction = SOP_READ_FLAG;
411 cdb[0] = INQUIRY;
412 if (vpd_page & VPD_PAGE) {
413 cdb[1] = 0x1;
414 cdb[2] = (u8)vpd_page;
415 }
416 cdb[4] = (u8)buffer_length;
417 break;
418 case CISS_REPORT_LOG:
419 case CISS_REPORT_PHYS:
420 request->data_direction = SOP_READ_FLAG;
421 cdb[0] = cmd;
422 if (cmd == CISS_REPORT_PHYS)
423 cdb[1] = CISS_REPORT_PHYS_EXTENDED;
424 else
425 cdb[1] = CISS_REPORT_LOG_EXTENDED;
426 put_unaligned_be32(buffer_length, &cdb[6]);
427 break;
428 case CISS_GET_RAID_MAP:
429 request->data_direction = SOP_READ_FLAG;
430 cdb[0] = CISS_READ;
431 cdb[1] = CISS_GET_RAID_MAP;
432 put_unaligned_be32(buffer_length, &cdb[6]);
433 break;
58322fe0 434 case SA_FLUSH_CACHE:
6c223761
KB		 435 request->data_direction = SOP_WRITE_FLAG;
436 cdb[0] = BMIC_WRITE;
58322fe0 437 cdb[6] = BMIC_FLUSH_CACHE;
6c223761
KB		 438 put_unaligned_be16(buffer_length, &cdb[7]);
439 break;
440 case BMIC_IDENTIFY_CONTROLLER:
441 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
442 request->data_direction = SOP_READ_FLAG;
443 cdb[0] = BMIC_READ;
444 cdb[6] = cmd;
445 put_unaligned_be16(buffer_length, &cdb[7]);
446 break;
447 case BMIC_WRITE_HOST_WELLNESS:
448 request->data_direction = SOP_WRITE_FLAG;
449 cdb[0] = BMIC_WRITE;
450 cdb[6] = cmd;
451 put_unaligned_be16(buffer_length, &cdb[7]);
452 break;
453 default:
454 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n",
455 cmd);
6c223761
KB		 456 break;
457 }
458
459 switch (request->data_direction) {
460 case SOP_READ_FLAG:
461 pci_dir = PCI_DMA_FROMDEVICE;
462 break;
463 case SOP_WRITE_FLAG:
464 pci_dir = PCI_DMA_TODEVICE;
465 break;
466 case SOP_NO_DIRECTION_FLAG:
467 pci_dir = PCI_DMA_NONE;
468 break;
469 default:
470 pci_dir = PCI_DMA_BIDIRECTIONAL;
471 break;
472 }
473
474 *pci_direction = pci_dir;
475
476 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
477 buffer, buffer_length, pci_dir);
478}
479
376fb880
KB		 480static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
481{
482 io_request->scmd = NULL;
483 io_request->status = 0;
484 io_request->error_info = NULL;
485 io_request->raid_bypass = false;
486}
487
6c223761
KB		 488static struct pqi_io_request *pqi_alloc_io_request(
489 struct pqi_ctrl_info *ctrl_info)
490{
491 struct pqi_io_request *io_request;
492 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
493
494 while (1) {
495 io_request = &ctrl_info->io_request_pool[i];
496 if (atomic_inc_return(&io_request->refcount) == 1)
497 break;
498 atomic_dec(&io_request->refcount);
499 i = (i + 1) % ctrl_info->max_io_slots;
500 }
501
502 /* benignly racy */
503 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
504
376fb880 505 pqi_reinit_io_request(io_request);
6c223761
KB		 506
507 return io_request;
508}
509
510static void pqi_free_io_request(struct pqi_io_request *io_request)
511{
512 atomic_dec(&io_request->refcount);
513}
514
515static int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
516 struct bmic_identify_controller *buffer)
517{
518 int rc;
519 int pci_direction;
520 struct pqi_raid_path_request request;
521
522 rc = pqi_build_raid_path_request(ctrl_info, &request,
523 BMIC_IDENTIFY_CONTROLLER, RAID_CTLR_LUNID, buffer,
524 sizeof(*buffer), 0, &pci_direction);
525 if (rc)
526 return rc;
527
528 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
529 NULL, NO_TIMEOUT);
530
531 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
532 pci_direction);
533
534 return rc;
535}
536
537static int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
538 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
539{
540 int rc;
541 int pci_direction;
542 struct pqi_raid_path_request request;
543
544 rc = pqi_build_raid_path_request(ctrl_info, &request,
545 INQUIRY, scsi3addr, buffer, buffer_length, vpd_page,
546 &pci_direction);
547 if (rc)
548 return rc;
549
550 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
551 NULL, NO_TIMEOUT);
552
553 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
554 pci_direction);
555
556 return rc;
557}
558
559static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
560 struct pqi_scsi_dev *device,
561 struct bmic_identify_physical_device *buffer,
562 size_t buffer_length)
563{
564 int rc;
565 int pci_direction;
566 u16 bmic_device_index;
567 struct pqi_raid_path_request request;
568
569 rc = pqi_build_raid_path_request(ctrl_info, &request,
570 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
571 buffer_length, 0, &pci_direction);
572 if (rc)
573 return rc;
574
575 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
576 request.cdb[2] = (u8)bmic_device_index;
577 request.cdb[9] = (u8)(bmic_device_index >> 8);
578
579 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
580 0, NULL, NO_TIMEOUT);
581
582 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
583 pci_direction);
584
585 return rc;
586}
587
58322fe0
KB		 588static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
589 enum bmic_flush_cache_shutdown_event shutdown_event)
6c223761
KB		 590{
591 int rc;
592 struct pqi_raid_path_request request;
593 int pci_direction;
58322fe0 594 struct bmic_flush_cache *flush_cache;
6c223761
KB		 595
596 /*
597 * Don't bother trying to flush the cache if the controller is
598 * locked up.
599 */
600 if (pqi_ctrl_offline(ctrl_info))
601 return -ENXIO;
602
58322fe0
KB		 603 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
604 if (!flush_cache)
6c223761
KB		 605 return -ENOMEM;
606
58322fe0
KB		 607 flush_cache->shutdown_event = shutdown_event;
608
6c223761 609 rc = pqi_build_raid_path_request(ctrl_info, &request,
58322fe0
KB		 610 SA_FLUSH_CACHE, RAID_CTLR_LUNID, flush_cache,
611 sizeof(*flush_cache), 0, &pci_direction);
6c223761
KB		 612 if (rc)
613 goto out;
614
615 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
d48f8fad 616 0, NULL, NO_TIMEOUT);
6c223761
KB		 617
618 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
619 pci_direction);
620
621out:
58322fe0 622 kfree(flush_cache);
6c223761
KB		 623
624 return rc;
625}
626
627static int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
628 void *buffer, size_t buffer_length)
629{
630 int rc;
631 struct pqi_raid_path_request request;
632 int pci_direction;
633
634 rc = pqi_build_raid_path_request(ctrl_info, &request,
635 BMIC_WRITE_HOST_WELLNESS, RAID_CTLR_LUNID, buffer,
636 buffer_length, 0, &pci_direction);
637 if (rc)
638 return rc;
639
640 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
641 0, NULL, NO_TIMEOUT);
642
643 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
644 pci_direction);
645
646 return rc;
647}
648
649#pragma pack(1)
650
651struct bmic_host_wellness_driver_version {
652 u8 start_tag[4];
653 u8 driver_version_tag[2];
654 __le16 driver_version_length;
655 char driver_version[32];
656 u8 end_tag[2];
657};
658
659#pragma pack()
660
661static int pqi_write_driver_version_to_host_wellness(
662 struct pqi_ctrl_info *ctrl_info)
663{
664 int rc;
665 struct bmic_host_wellness_driver_version *buffer;
666 size_t buffer_length;
667
668 buffer_length = sizeof(*buffer);
669
670 buffer = kmalloc(buffer_length, GFP_KERNEL);
671 if (!buffer)
672 return -ENOMEM;
673
674 buffer->start_tag[0] = '<';
675 buffer->start_tag[1] = 'H';
676 buffer->start_tag[2] = 'W';
677 buffer->start_tag[3] = '>';
678 buffer->driver_version_tag[0] = 'D';
679 buffer->driver_version_tag[1] = 'V';
680 put_unaligned_le16(sizeof(buffer->driver_version),
681 &buffer->driver_version_length);
061ef06a 682 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
6c223761
KB		 683 sizeof(buffer->driver_version) - 1);
684 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
685 buffer->end_tag[0] = 'Z';
686 buffer->end_tag[1] = 'Z';
687
688 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
689
690 kfree(buffer);
691
692 return rc;
693}
694
695#pragma pack(1)
696
697struct bmic_host_wellness_time {
698 u8 start_tag[4];
699 u8 time_tag[2];
700 __le16 time_length;
701 u8 time[8];
702 u8 dont_write_tag[2];
703 u8 end_tag[2];
704};
705
706#pragma pack()
707
708static int pqi_write_current_time_to_host_wellness(
709 struct pqi_ctrl_info *ctrl_info)
710{
711 int rc;
712 struct bmic_host_wellness_time *buffer;
713 size_t buffer_length;
714 time64_t local_time;
715 unsigned int year;
ed10858e 716 struct tm tm;
6c223761
KB		 717
718 buffer_length = sizeof(*buffer);
719
720 buffer = kmalloc(buffer_length, GFP_KERNEL);
721 if (!buffer)
722 return -ENOMEM;
723
724 buffer->start_tag[0] = '<';
725 buffer->start_tag[1] = 'H';
726 buffer->start_tag[2] = 'W';
727 buffer->start_tag[3] = '>';
728 buffer->time_tag[0] = 'T';
729 buffer->time_tag[1] = 'D';
730 put_unaligned_le16(sizeof(buffer->time),
731 &buffer->time_length);
732
ed10858e
AB		 733 local_time = ktime_get_real_seconds();
734 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
6c223761
KB		 735 year = tm.tm_year + 1900;
736
737 buffer->time[0] = bin2bcd(tm.tm_hour);
738 buffer->time[1] = bin2bcd(tm.tm_min);
739 buffer->time[2] = bin2bcd(tm.tm_sec);
740 buffer->time[3] = 0;
741 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
742 buffer->time[5] = bin2bcd(tm.tm_mday);
743 buffer->time[6] = bin2bcd(year / 100);
744 buffer->time[7] = bin2bcd(year % 100);
745
746 buffer->dont_write_tag[0] = 'D';
747 buffer->dont_write_tag[1] = 'W';
748 buffer->end_tag[0] = 'Z';
749 buffer->end_tag[1] = 'Z';
750
751 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
752
753 kfree(buffer);
754
755 return rc;
756}
757
758#define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * HZ)
759
760static void pqi_update_time_worker(struct work_struct *work)
761{
762 int rc;
763 struct pqi_ctrl_info *ctrl_info;
764
765 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
766 update_time_work);
767
5f310425
KB		 768 if (pqi_ctrl_offline(ctrl_info))
769 return;
770
6c223761
KB		 771 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
772 if (rc)
773 dev_warn(&ctrl_info->pci_dev->dev,
774 "error updating time on controller\n");
775
776 schedule_delayed_work(&ctrl_info->update_time_work,
777 PQI_UPDATE_TIME_WORK_INTERVAL);
778}
779
780static inline void pqi_schedule_update_time_worker(
4fbebf1a 781 struct pqi_ctrl_info *ctrl_info)
6c223761 782{
4fbebf1a 783 schedule_delayed_work(&ctrl_info->update_time_work, 0);
061ef06a
KB		 784}
785
786static inline void pqi_cancel_update_time_worker(
787 struct pqi_ctrl_info *ctrl_info)
788{
061ef06a 789 cancel_delayed_work_sync(&ctrl_info->update_time_work);
6c223761
KB		 790}
791
792static int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
793 void *buffer, size_t buffer_length)
794{
795 int rc;
796 int pci_direction;
797 struct pqi_raid_path_request request;
798
799 rc = pqi_build_raid_path_request(ctrl_info, &request,
800 cmd, RAID_CTLR_LUNID, buffer, buffer_length, 0, &pci_direction);
801 if (rc)
802 return rc;
803
804 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
805 NULL, NO_TIMEOUT);
806
807 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
808 pci_direction);
809
810 return rc;
811}
812
813static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
814 void **buffer)
815{
816 int rc;
817 size_t lun_list_length;
818 size_t lun_data_length;
819 size_t new_lun_list_length;
820 void *lun_data = NULL;
821 struct report_lun_header *report_lun_header;
822
823 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
824 if (!report_lun_header) {
825 rc = -ENOMEM;
826 goto out;
827 }
828
829 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header,
830 sizeof(*report_lun_header));
831 if (rc)
832 goto out;
833
834 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
835
836again:
837 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
838
839 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
840 if (!lun_data) {
841 rc = -ENOMEM;
842 goto out;
843 }
844
845 if (lun_list_length == 0) {
846 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
847 goto out;
848 }
849
850 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
851 if (rc)
852 goto out;
853
854 new_lun_list_length = get_unaligned_be32(
855 &((struct report_lun_header *)lun_data)->list_length);
856
857 if (new_lun_list_length > lun_list_length) {
858 lun_list_length = new_lun_list_length;
859 kfree(lun_data);
860 goto again;
861 }
862
863out:
864 kfree(report_lun_header);
865
866 if (rc) {
867 kfree(lun_data);
868 lun_data = NULL;
869 }
870
871 *buffer = lun_data;
872
873 return rc;
874}
875
876static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info,
877 void **buffer)
878{
879 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS,
880 buffer);
881}
882
883static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info,
884 void **buffer)
885{
886 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
887}
888
889static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
890 struct report_phys_lun_extended **physdev_list,
891 struct report_log_lun_extended **logdev_list)
892{
893 int rc;
894 size_t logdev_list_length;
895 size_t logdev_data_length;
896 struct report_log_lun_extended *internal_logdev_list;
897 struct report_log_lun_extended *logdev_data;
898 struct report_lun_header report_lun_header;
899
900 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
901 if (rc)
902 dev_err(&ctrl_info->pci_dev->dev,
903 "report physical LUNs failed\n");
904
905 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
906 if (rc)
907 dev_err(&ctrl_info->pci_dev->dev,
908 "report logical LUNs failed\n");
909
910 /*
911 * Tack the controller itself onto the end of the logical device list.
912 */
913
914 logdev_data = *logdev_list;
915
916 if (logdev_data) {
917 logdev_list_length =
918 get_unaligned_be32(&logdev_data->header.list_length);
919 } else {
920 memset(&report_lun_header, 0, sizeof(report_lun_header));
921 logdev_data =
922 (struct report_log_lun_extended *)&report_lun_header;
923 logdev_list_length = 0;
924 }
925
926 logdev_data_length = sizeof(struct report_lun_header) +
927 logdev_list_length;
928
929 internal_logdev_list = kmalloc(logdev_data_length +
930 sizeof(struct report_log_lun_extended), GFP_KERNEL);
931 if (!internal_logdev_list) {
932 kfree(*logdev_list);
933 *logdev_list = NULL;
934 return -ENOMEM;
935 }
936
937 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
938 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
939 sizeof(struct report_log_lun_extended_entry));
940 put_unaligned_be32(logdev_list_length +
941 sizeof(struct report_log_lun_extended_entry),
942 &internal_logdev_list->header.list_length);
943
944 kfree(*logdev_list);
945 *logdev_list = internal_logdev_list;
946
947 return 0;
948}
949
950static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
951 int bus, int target, int lun)
952{
953 device->bus = bus;
954 device->target = target;
955 device->lun = lun;
956}
957
958static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
959{
960 u8 *scsi3addr;
961 u32 lunid;
bd10cf0b
KB		 962 int bus;
963 int target;
964 int lun;
6c223761
KB		 965
966 scsi3addr = device->scsi3addr;
967 lunid = get_unaligned_le32(scsi3addr);
968
969 if (pqi_is_hba_lunid(scsi3addr)) {
970 /* The specified device is the controller. */
971 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
972 device->target_lun_valid = true;
973 return;
974 }
975
976 if (pqi_is_logical_device(device)) {
bd10cf0b
KB		 977 if (device->is_external_raid_device) {
978 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
979 target = (lunid >> 16) & 0x3fff;
980 lun = lunid & 0xff;
981 } else {
982 bus = PQI_RAID_VOLUME_BUS;
983 target = 0;
984 lun = lunid & 0x3fff;
985 }
986 pqi_set_bus_target_lun(device, bus, target, lun);
6c223761
KB		 987 device->target_lun_valid = true;
988 return;
989 }
990
991 /*
992 * Defer target and LUN assignment for non-controller physical devices
993 * because the SAS transport layer will make these assignments later.
994 */
995 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
996}
997
998static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
999 struct pqi_scsi_dev *device)
1000{
1001 int rc;
1002 u8 raid_level;
1003 u8 *buffer;
1004
1005 raid_level = SA_RAID_UNKNOWN;
1006
1007 buffer = kmalloc(64, GFP_KERNEL);
1008 if (buffer) {
1009 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1010 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1011 if (rc == 0) {
1012 raid_level = buffer[8];
1013 if (raid_level > SA_RAID_MAX)
1014 raid_level = SA_RAID_UNKNOWN;
1015 }
1016 kfree(buffer);
1017 }
1018
1019 device->raid_level = raid_level;
1020}
1021
1022static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1023 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1024{
1025 char *err_msg;
1026 u32 raid_map_size;
1027 u32 r5or6_blocks_per_row;
1028 unsigned int num_phys_disks;
1029 unsigned int num_raid_map_entries;
1030
1031 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1032
1033 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1034 err_msg = "RAID map too small";
1035 goto bad_raid_map;
1036 }
1037
1038 if (raid_map_size > sizeof(*raid_map)) {
1039 err_msg = "RAID map too large";
1040 goto bad_raid_map;
1041 }
1042
1043 num_phys_disks = get_unaligned_le16(&raid_map->layout_map_count) *
1044 (get_unaligned_le16(&raid_map->data_disks_per_row) +
1045 get_unaligned_le16(&raid_map->metadata_disks_per_row));
1046 num_raid_map_entries = num_phys_disks *
1047 get_unaligned_le16(&raid_map->row_cnt);
1048
1049 if (num_raid_map_entries > RAID_MAP_MAX_ENTRIES) {
1050 err_msg = "invalid number of map entries in RAID map";
1051 goto bad_raid_map;
1052 }
1053
1054 if (device->raid_level == SA_RAID_1) {
1055 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1056 err_msg = "invalid RAID-1 map";
1057 goto bad_raid_map;
1058 }
1059 } else if (device->raid_level == SA_RAID_ADM) {
1060 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1061 err_msg = "invalid RAID-1(ADM) map";
1062 goto bad_raid_map;
1063 }
1064 } else if ((device->raid_level == SA_RAID_5 ||
1065 device->raid_level == SA_RAID_6) &&
1066 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1067 /* RAID 50/60 */
1068 r5or6_blocks_per_row =
1069 get_unaligned_le16(&raid_map->strip_size) *
1070 get_unaligned_le16(&raid_map->data_disks_per_row);
1071 if (r5or6_blocks_per_row == 0) {
1072 err_msg = "invalid RAID-5 or RAID-6 map";
1073 goto bad_raid_map;
1074 }
1075 }
1076
1077 return 0;
1078
1079bad_raid_map:
d87d5474
KB		 1080 dev_warn(&ctrl_info->pci_dev->dev,
1081 "scsi %d:%d:%d:%d %s\n",
1082 ctrl_info->scsi_host->host_no,
1083 device->bus, device->target, device->lun, err_msg);
6c223761
KB		 1084
1085 return -EINVAL;
1086}
1087
1088static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1089 struct pqi_scsi_dev *device)
1090{
1091 int rc;
1092 int pci_direction;
1093 struct pqi_raid_path_request request;
1094 struct raid_map *raid_map;
1095
1096 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1097 if (!raid_map)
1098 return -ENOMEM;
1099
1100 rc = pqi_build_raid_path_request(ctrl_info, &request,
1101 CISS_GET_RAID_MAP, device->scsi3addr, raid_map,
1102 sizeof(*raid_map), 0, &pci_direction);
1103 if (rc)
1104 goto error;
1105
1106 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
1107 NULL, NO_TIMEOUT);
1108
1109 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
1110 pci_direction);
1111
1112 if (rc)
1113 goto error;
1114
1115 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1116 if (rc)
1117 goto error;
1118
1119 device->raid_map = raid_map;
1120
1121 return 0;
1122
1123error:
1124 kfree(raid_map);
1125
1126 return rc;
1127}
1128
588a63fe 1129static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1130 struct pqi_scsi_dev *device)
1131{
1132 int rc;
1133 u8 *buffer;
588a63fe 1134 u8 bypass_status;
6c223761
KB		 1135
1136 buffer = kmalloc(64, GFP_KERNEL);
1137 if (!buffer)
1138 return;
1139
1140 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
588a63fe 1141 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
6c223761
KB		 1142 if (rc)
1143 goto out;
1144
588a63fe
KB		 1145#define RAID_BYPASS_STATUS 4
1146#define RAID_BYPASS_CONFIGURED 0x1
1147#define RAID_BYPASS_ENABLED 0x2
6c223761 1148
588a63fe
KB		 1149 bypass_status = buffer[RAID_BYPASS_STATUS];
1150 device->raid_bypass_configured =
1151 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1152 if (device->raid_bypass_configured &&
1153 (bypass_status & RAID_BYPASS_ENABLED) &&
1154 pqi_get_raid_map(ctrl_info, device) == 0)
1155 device->raid_bypass_enabled = true;
6c223761
KB		 1156
1157out:
1158 kfree(buffer);
1159}
1160
1161/*
1162 * Use vendor-specific VPD to determine online/offline status of a volume.
1163 */
1164
1165static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1166 struct pqi_scsi_dev *device)
1167{
1168 int rc;
1169 size_t page_length;
1170 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1171 bool volume_offline = true;
1172 u32 volume_flags;
1173 struct ciss_vpd_logical_volume_status *vpd;
1174
1175 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1176 if (!vpd)
1177 goto no_buffer;
1178
1179 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1180 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1181 if (rc)
1182 goto out;
1183
1184 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1185 volume_status) + vpd->page_length;
1186 if (page_length < sizeof(*vpd))
1187 goto out;
1188
1189 volume_status = vpd->volume_status;
1190 volume_flags = get_unaligned_be32(&vpd->flags);
1191 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1192
1193out:
1194 kfree(vpd);
1195no_buffer:
1196 device->volume_status = volume_status;
1197 device->volume_offline = volume_offline;
1198}
1199
1200static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
1201 struct pqi_scsi_dev *device)
1202{
1203 int rc;
1204 u8 *buffer;
1205
1206 buffer = kmalloc(64, GFP_KERNEL);
1207 if (!buffer)
1208 return -ENOMEM;
1209
1210 /* Send an inquiry to the device to see what it is. */
1211 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64);
1212 if (rc)
1213 goto out;
1214
1215 scsi_sanitize_inquiry_string(&buffer[8], 8);
1216 scsi_sanitize_inquiry_string(&buffer[16], 16);
1217
1218 device->devtype = buffer[0] & 0x1f;
cbe0c7b1
KB		 1219 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1220 memcpy(device->model, &buffer[16], sizeof(device->model));
6c223761
KB		 1221
1222 if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK) {
bd10cf0b
KB		 1223 if (device->is_external_raid_device) {
1224 device->raid_level = SA_RAID_UNKNOWN;
1225 device->volume_status = CISS_LV_OK;
1226 device->volume_offline = false;
1227 } else {
1228 pqi_get_raid_level(ctrl_info, device);
588a63fe 1229 pqi_get_raid_bypass_status(ctrl_info, device);
bd10cf0b
KB		 1230 pqi_get_volume_status(ctrl_info, device);
1231 }
6c223761
KB		 1232 }
1233
1234out:
1235 kfree(buffer);
1236
1237 return rc;
1238}
1239
1240static void pqi_get_physical_disk_info(struct pqi_ctrl_info *ctrl_info,
1241 struct pqi_scsi_dev *device,
1242 struct bmic_identify_physical_device *id_phys)
1243{
1244 int rc;
1245
1246 memset(id_phys, 0, sizeof(*id_phys));
1247
1248 rc = pqi_identify_physical_device(ctrl_info, device,
1249 id_phys, sizeof(*id_phys));
1250 if (rc) {
1251 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1252 return;
1253 }
1254
1255 device->queue_depth =
1256 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1257 device->device_type = id_phys->device_type;
1258 device->active_path_index = id_phys->active_path_number;
1259 device->path_map = id_phys->redundant_path_present_map;
1260 memcpy(&device->box,
1261 &id_phys->alternate_paths_phys_box_on_port,
1262 sizeof(device->box));
1263 memcpy(&device->phys_connector,
1264 &id_phys->alternate_paths_phys_connector,
1265 sizeof(device->phys_connector));
1266 device->bay = id_phys->phys_bay_in_box;
1267}
1268
1269static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1270 struct pqi_scsi_dev *device)
1271{
1272 char *status;
1273 static const char unknown_state_str[] =
1274 "Volume is in an unknown state (%u)";
1275 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1276
1277 switch (device->volume_status) {
1278 case CISS_LV_OK:
1279 status = "Volume online";
1280 break;
1281 case CISS_LV_FAILED:
1282 status = "Volume failed";
1283 break;
1284 case CISS_LV_NOT_CONFIGURED:
1285 status = "Volume not configured";
1286 break;
1287 case CISS_LV_DEGRADED:
1288 status = "Volume degraded";
1289 break;
1290 case CISS_LV_READY_FOR_RECOVERY:
1291 status = "Volume ready for recovery operation";
1292 break;
1293 case CISS_LV_UNDERGOING_RECOVERY:
1294 status = "Volume undergoing recovery";
1295 break;
1296 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1297 status = "Wrong physical drive was replaced";
1298 break;
1299 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1300 status = "A physical drive not properly connected";
1301 break;
1302 case CISS_LV_HARDWARE_OVERHEATING:
1303 status = "Hardware is overheating";
1304 break;
1305 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1306 status = "Hardware has overheated";
1307 break;
1308 case CISS_LV_UNDERGOING_EXPANSION:
1309 status = "Volume undergoing expansion";
1310 break;
1311 case CISS_LV_NOT_AVAILABLE:
1312 status = "Volume waiting for transforming volume";
1313 break;
1314 case CISS_LV_QUEUED_FOR_EXPANSION:
1315 status = "Volume queued for expansion";
1316 break;
1317 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1318 status = "Volume disabled due to SCSI ID conflict";
1319 break;
1320 case CISS_LV_EJECTED:
1321 status = "Volume has been ejected";
1322 break;
1323 case CISS_LV_UNDERGOING_ERASE:
1324 status = "Volume undergoing background erase";
1325 break;
1326 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1327 status = "Volume ready for predictive spare rebuild";
1328 break;
1329 case CISS_LV_UNDERGOING_RPI:
1330 status = "Volume undergoing rapid parity initialization";
1331 break;
1332 case CISS_LV_PENDING_RPI:
1333 status = "Volume queued for rapid parity initialization";
1334 break;
1335 case CISS_LV_ENCRYPTED_NO_KEY:
1336 status = "Encrypted volume inaccessible - key not present";
1337 break;
1338 case CISS_LV_UNDERGOING_ENCRYPTION:
1339 status = "Volume undergoing encryption process";
1340 break;
1341 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1342 status = "Volume undergoing encryption re-keying process";
1343 break;
1344 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
d87d5474 1345 status = "Volume encrypted but encryption is disabled";
6c223761
KB		 1346 break;
1347 case CISS_LV_PENDING_ENCRYPTION:
1348 status = "Volume pending migration to encrypted state";
1349 break;
1350 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1351 status = "Volume pending encryption rekeying";
1352 break;
1353 case CISS_LV_NOT_SUPPORTED:
1354 status = "Volume not supported on this controller";
1355 break;
1356 case CISS_LV_STATUS_UNAVAILABLE:
1357 status = "Volume status not available";
1358 break;
1359 default:
1360 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1361 unknown_state_str, device->volume_status);
1362 status = unknown_state_buffer;
1363 break;
1364 }
1365
1366 dev_info(&ctrl_info->pci_dev->dev,
1367 "scsi %d:%d:%d:%d %s\n",
1368 ctrl_info->scsi_host->host_no,
1369 device->bus, device->target, device->lun, status);
1370}
1371
6c223761
KB		 1372static void pqi_rescan_worker(struct work_struct *work)
1373{
1374 struct pqi_ctrl_info *ctrl_info;
1375
1376 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1377 rescan_work);
1378
1379 pqi_scan_scsi_devices(ctrl_info);
1380}
1381
1382static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1383 struct pqi_scsi_dev *device)
1384{
1385 int rc;
1386
1387 if (pqi_is_logical_device(device))
1388 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1389 device->target, device->lun);
1390 else
1391 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1392
1393 return rc;
1394}
1395
1396static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info,
1397 struct pqi_scsi_dev *device)
1398{
1399 if (pqi_is_logical_device(device))
1400 scsi_remove_device(device->sdev);
1401 else
1402 pqi_remove_sas_device(device);
1403}
1404
1405/* Assumes the SCSI device list lock is held. */
1406
1407static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1408 int bus, int target, int lun)
1409{
1410 struct pqi_scsi_dev *device;
1411
1412 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1413 scsi_device_list_entry)
1414 if (device->bus == bus && device->target == target &&
1415 device->lun == lun)
1416 return device;
1417
1418 return NULL;
1419}
1420
1421static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1,
1422 struct pqi_scsi_dev *dev2)
1423{
1424 if (dev1->is_physical_device != dev2->is_physical_device)
1425 return false;
1426
1427 if (dev1->is_physical_device)
1428 return dev1->wwid == dev2->wwid;
1429
1430 return memcmp(dev1->volume_id, dev2->volume_id,
1431 sizeof(dev1->volume_id)) == 0;
1432}
1433
1434enum pqi_find_result {
1435 DEVICE_NOT_FOUND,
1436 DEVICE_CHANGED,
1437 DEVICE_SAME,
1438};
1439
1440static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
1441 struct pqi_scsi_dev *device_to_find,
1442 struct pqi_scsi_dev **matching_device)
1443{
1444 struct pqi_scsi_dev *device;
1445
1446 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1447 scsi_device_list_entry) {
1448 if (pqi_scsi3addr_equal(device_to_find->scsi3addr,
1449 device->scsi3addr)) {
1450 *matching_device = device;
1451 if (pqi_device_equal(device_to_find, device)) {
1452 if (device_to_find->volume_offline)
1453 return DEVICE_CHANGED;
1454 return DEVICE_SAME;
1455 }
1456 return DEVICE_CHANGED;
1457 }
1458 }
1459
1460 return DEVICE_NOT_FOUND;
1461}
1462
6de783f6
KB		 1463#define PQI_DEV_INFO_BUFFER_LENGTH 128
1464
6c223761
KB		 1465static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1466 char *action, struct pqi_scsi_dev *device)
1467{
6de783f6
KB		 1468 ssize_t count;
1469 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1470
1471 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1472 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1473
1474 if (device->target_lun_valid)
1475 count += snprintf(buffer + count,
1476 PQI_DEV_INFO_BUFFER_LENGTH - count,
1477 "%d:%d",
1478 device->target,
1479 device->lun);
1480 else
1481 count += snprintf(buffer + count,
1482 PQI_DEV_INFO_BUFFER_LENGTH - count,
1483 "-:-");
1484
1485 if (pqi_is_logical_device(device))
1486 count += snprintf(buffer + count,
1487 PQI_DEV_INFO_BUFFER_LENGTH - count,
1488 " %08x%08x",
1489 *((u32 *)&device->scsi3addr),
1490 *((u32 *)&device->scsi3addr[4]));
1491 else
1492 count += snprintf(buffer + count,
1493 PQI_DEV_INFO_BUFFER_LENGTH - count,
1494 " %016llx", device->sas_address);
1495
1496 count += snprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
1497 " %s %.8s %.16s ",
6c223761
KB		 1498 scsi_device_type(device->devtype),
1499 device->vendor,
6de783f6
KB		 1500 device->model);
1501
1502 if (pqi_is_logical_device(device)) {
1503 if (device->devtype == TYPE_DISK)
1504 count += snprintf(buffer + count,
1505 PQI_DEV_INFO_BUFFER_LENGTH - count,
1506 "SSDSmartPathCap%c En%c %-12s",
588a63fe
KB		 1507 device->raid_bypass_configured ? '+' : '-',
1508 device->raid_bypass_enabled ? '+' : '-',
6de783f6
KB		 1509 pqi_raid_level_to_string(device->raid_level));
1510 } else {
1511 count += snprintf(buffer + count,
1512 PQI_DEV_INFO_BUFFER_LENGTH - count,
1513 "AIO%c", device->aio_enabled ? '+' : '-');
1514 if (device->devtype == TYPE_DISK ||
1515 device->devtype == TYPE_ZBC)
1516 count += snprintf(buffer + count,
1517 PQI_DEV_INFO_BUFFER_LENGTH - count,
1518 " qd=%-6d", device->queue_depth);
1519 }
1520
1521 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
6c223761
KB		 1522}
1523
1524/* Assumes the SCSI device list lock is held. */
1525
1526static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1527 struct pqi_scsi_dev *new_device)
1528{
1529 existing_device->devtype = new_device->devtype;
1530 existing_device->device_type = new_device->device_type;
1531 existing_device->bus = new_device->bus;
1532 if (new_device->target_lun_valid) {
1533 existing_device->target = new_device->target;
1534 existing_device->lun = new_device->lun;
1535 existing_device->target_lun_valid = true;
1536 }
1537
1538 /* By definition, the scsi3addr and wwid fields are already the same. */
1539
1540 existing_device->is_physical_device = new_device->is_physical_device;
bd10cf0b
KB		 1541 existing_device->is_external_raid_device =
1542 new_device->is_external_raid_device;
6c223761
KB		 1543 existing_device->aio_enabled = new_device->aio_enabled;
1544 memcpy(existing_device->vendor, new_device->vendor,
1545 sizeof(existing_device->vendor));
1546 memcpy(existing_device->model, new_device->model,
1547 sizeof(existing_device->model));
1548 existing_device->sas_address = new_device->sas_address;
1549 existing_device->raid_level = new_device->raid_level;
1550 existing_device->queue_depth = new_device->queue_depth;
1551 existing_device->aio_handle = new_device->aio_handle;
1552 existing_device->volume_status = new_device->volume_status;
1553 existing_device->active_path_index = new_device->active_path_index;
1554 existing_device->path_map = new_device->path_map;
1555 existing_device->bay = new_device->bay;
1556 memcpy(existing_device->box, new_device->box,
1557 sizeof(existing_device->box));
1558 memcpy(existing_device->phys_connector, new_device->phys_connector,
1559 sizeof(existing_device->phys_connector));
6c223761
KB		 1560 existing_device->offload_to_mirror = 0;
1561 kfree(existing_device->raid_map);
1562 existing_device->raid_map = new_device->raid_map;
588a63fe
KB		 1563 existing_device->raid_bypass_configured =
1564 new_device->raid_bypass_configured;
1565 existing_device->raid_bypass_enabled =
1566 new_device->raid_bypass_enabled;
6c223761
KB		 1567
1568 /* To prevent this from being freed later. */
1569 new_device->raid_map = NULL;
1570}
1571
1572static inline void pqi_free_device(struct pqi_scsi_dev *device)
1573{
1574 if (device) {
1575 kfree(device->raid_map);
1576 kfree(device);
1577 }
1578}
1579
1580/*
1581 * Called when exposing a new device to the OS fails in order to re-adjust
1582 * our internal SCSI device list to match the SCSI ML's view.
1583 */
1584
1585static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1586 struct pqi_scsi_dev *device)
1587{
1588 unsigned long flags;
1589
1590 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1591 list_del(&device->scsi_device_list_entry);
1592 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1593
1594 /* Allow the device structure to be freed later. */
1595 device->keep_device = false;
1596}
1597
1598static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1599 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1600{
1601 int rc;
1602 unsigned int i;
1603 unsigned long flags;
1604 enum pqi_find_result find_result;
1605 struct pqi_scsi_dev *device;
1606 struct pqi_scsi_dev *next;
1607 struct pqi_scsi_dev *matching_device;
8a994a04
KB		 1608 LIST_HEAD(add_list);
1609 LIST_HEAD(delete_list);
6c223761
KB		 1610
1611 /*
1612 * The idea here is to do as little work as possible while holding the
1613 * spinlock. That's why we go to great pains to defer anything other
1614 * than updating the internal device list until after we release the
1615 * spinlock.
1616 */
1617
1618 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1619
1620 /* Assume that all devices in the existing list have gone away. */
1621 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1622 scsi_device_list_entry)
1623 device->device_gone = true;
1624
1625 for (i = 0; i < num_new_devices; i++) {
1626 device = new_device_list[i];
1627
1628 find_result = pqi_scsi_find_entry(ctrl_info, device,
1629 &matching_device);
1630
1631 switch (find_result) {
1632 case DEVICE_SAME:
1633 /*
1634 * The newly found device is already in the existing
1635 * device list.
1636 */
1637 device->new_device = false;
1638 matching_device->device_gone = false;
1639 pqi_scsi_update_device(matching_device, device);
1640 break;
1641 case DEVICE_NOT_FOUND:
1642 /*
1643 * The newly found device is NOT in the existing device
1644 * list.
1645 */
1646 device->new_device = true;
1647 break;
1648 case DEVICE_CHANGED:
1649 /*
1650 * The original device has gone away and we need to add
1651 * the new device.
1652 */
1653 device->new_device = true;
1654 break;
6c223761
KB		 1655 }
1656 }
1657
1658 /* Process all devices that have gone away. */
1659 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1660 scsi_device_list_entry) {
1661 if (device->device_gone) {
1662 list_del(&device->scsi_device_list_entry);
1663 list_add_tail(&device->delete_list_entry, &delete_list);
1664 }
1665 }
1666
1667 /* Process all new devices. */
1668 for (i = 0; i < num_new_devices; i++) {
1669 device = new_device_list[i];
1670 if (!device->new_device)
1671 continue;
1672 if (device->volume_offline)
1673 continue;
1674 list_add_tail(&device->scsi_device_list_entry,
1675 &ctrl_info->scsi_device_list);
1676 list_add_tail(&device->add_list_entry, &add_list);
1677 /* To prevent this device structure from being freed later. */
1678 device->keep_device = true;
1679 }
1680
6c223761
KB		 1681 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1682
1683 /* Remove all devices that have gone away. */
1684 list_for_each_entry_safe(device, next, &delete_list,
1685 delete_list_entry) {
6c223761
KB		 1686 if (device->volume_offline) {
1687 pqi_dev_info(ctrl_info, "offline", device);
1688 pqi_show_volume_status(ctrl_info, device);
1689 } else {
1690 pqi_dev_info(ctrl_info, "removed", device);
1691 }
6de783f6
KB		 1692 if (device->sdev)
1693 pqi_remove_device(ctrl_info, device);
6c223761
KB		 1694 list_del(&device->delete_list_entry);
1695 pqi_free_device(device);
1696 }
1697
1698 /*
1699 * Notify the SCSI ML if the queue depth of any existing device has
1700 * changed.
1701 */
1702 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1703 scsi_device_list_entry) {
1704 if (device->sdev && device->queue_depth !=
1705 device->advertised_queue_depth) {
1706 device->advertised_queue_depth = device->queue_depth;
1707 scsi_change_queue_depth(device->sdev,
1708 device->advertised_queue_depth);
1709 }
1710 }
1711
1712 /* Expose any new devices. */
1713 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
94086f5b 1714 if (!device->sdev) {
6de783f6 1715 pqi_dev_info(ctrl_info, "added", device);
6c223761
KB		 1716 rc = pqi_add_device(ctrl_info, device);
1717 if (rc) {
1718 dev_warn(&ctrl_info->pci_dev->dev,
1719 "scsi %d:%d:%d:%d addition failed, device not added\n",
1720 ctrl_info->scsi_host->host_no,
1721 device->bus, device->target,
1722 device->lun);
1723 pqi_fixup_botched_add(ctrl_info, device);
6c223761
KB		 1724 }
1725 }
6c223761
KB		 1726 }
1727}
1728
1729static bool pqi_is_supported_device(struct pqi_scsi_dev *device)
1730{
1731 bool is_supported = false;
1732
1733 switch (device->devtype) {
1734 case TYPE_DISK:
1735 case TYPE_ZBC:
1736 case TYPE_TAPE:
1737 case TYPE_MEDIUM_CHANGER:
1738 case TYPE_ENCLOSURE:
1739 is_supported = true;
1740 break;
1741 case TYPE_RAID:
1742 /*
1743 * Only support the HBA controller itself as a RAID
1744 * controller. If it's a RAID controller other than
376fb880
KB		 1745 * the HBA itself (an external RAID controller, for
1746 * example), we don't support it.
6c223761
KB		 1747 */
1748 if (pqi_is_hba_lunid(device->scsi3addr))
1749 is_supported = true;
1750 break;
1751 }
1752
1753 return is_supported;
1754}
1755
94086f5b 1756static inline bool pqi_skip_device(u8 *scsi3addr)
6c223761 1757{
94086f5b
KB		 1758 /* Ignore all masked devices. */
1759 if (MASKED_DEVICE(scsi3addr))
6c223761 1760 return true;
6c223761
KB		 1761
1762 return false;
1763}
1764
6c223761
KB		 1765static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1766{
1767 int i;
1768 int rc;
8a994a04 1769 LIST_HEAD(new_device_list_head);
6c223761
KB		 1770 struct report_phys_lun_extended *physdev_list = NULL;
1771 struct report_log_lun_extended *logdev_list = NULL;
1772 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
1773 struct report_log_lun_extended_entry *log_lun_ext_entry;
1774 struct bmic_identify_physical_device *id_phys = NULL;
1775 u32 num_physicals;
1776 u32 num_logicals;
1777 struct pqi_scsi_dev **new_device_list = NULL;
1778 struct pqi_scsi_dev *device;
1779 struct pqi_scsi_dev *next;
1780 unsigned int num_new_devices;
1781 unsigned int num_valid_devices;
1782 bool is_physical_device;
1783 u8 *scsi3addr;
1784 static char *out_of_memory_msg =
6de783f6 1785 "failed to allocate memory, device discovery stopped";
6c223761 1786
6c223761
KB		 1787 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
1788 if (rc)
1789 goto out;
1790
1791 if (physdev_list)
1792 num_physicals =
1793 get_unaligned_be32(&physdev_list->header.list_length)
1794 / sizeof(physdev_list->lun_entries[0]);
1795 else
1796 num_physicals = 0;
1797
1798 if (logdev_list)
1799 num_logicals =
1800 get_unaligned_be32(&logdev_list->header.list_length)
1801 / sizeof(logdev_list->lun_entries[0]);
1802 else
1803 num_logicals = 0;
1804
1805 if (num_physicals) {
1806 /*
1807 * We need this buffer for calls to pqi_get_physical_disk_info()
1808 * below. We allocate it here instead of inside
1809 * pqi_get_physical_disk_info() because it's a fairly large
1810 * buffer.
1811 */
1812 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
1813 if (!id_phys) {
1814 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1815 out_of_memory_msg);
1816 rc = -ENOMEM;
1817 goto out;
1818 }
1819 }
1820
1821 num_new_devices = num_physicals + num_logicals;
1822
1823 new_device_list = kmalloc(sizeof(*new_device_list) *
1824 num_new_devices, GFP_KERNEL);
1825 if (!new_device_list) {
1826 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
1827 rc = -ENOMEM;
1828 goto out;
1829 }
1830
1831 for (i = 0; i < num_new_devices; i++) {
1832 device = kzalloc(sizeof(*device), GFP_KERNEL);
1833 if (!device) {
1834 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1835 out_of_memory_msg);
1836 rc = -ENOMEM;
1837 goto out;
1838 }
1839 list_add_tail(&device->new_device_list_entry,
1840 &new_device_list_head);
1841 }
1842
1843 device = NULL;
1844 num_valid_devices = 0;
1845
1846 for (i = 0; i < num_new_devices; i++) {
1847
1848 if (i < num_physicals) {
1849 is_physical_device = true;
1850 phys_lun_ext_entry = &physdev_list->lun_entries[i];
1851 log_lun_ext_entry = NULL;
1852 scsi3addr = phys_lun_ext_entry->lunid;
1853 } else {
1854 is_physical_device = false;
1855 phys_lun_ext_entry = NULL;
1856 log_lun_ext_entry =
1857 &logdev_list->lun_entries[i - num_physicals];
1858 scsi3addr = log_lun_ext_entry->lunid;
1859 }
1860
94086f5b 1861 if (is_physical_device && pqi_skip_device(scsi3addr))
6c223761
KB		 1862 continue;
1863
1864 if (device)
1865 device = list_next_entry(device, new_device_list_entry);
1866 else
1867 device = list_first_entry(&new_device_list_head,
1868 struct pqi_scsi_dev, new_device_list_entry);
1869
1870 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1871 device->is_physical_device = is_physical_device;
bd10cf0b
KB		 1872 if (!is_physical_device)
1873 device->is_external_raid_device =
1874 pqi_is_external_raid_addr(scsi3addr);
6c223761
KB		 1875
1876 /* Gather information about the device. */
1877 rc = pqi_get_device_info(ctrl_info, device);
1878 if (rc == -ENOMEM) {
1879 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1880 out_of_memory_msg);
1881 goto out;
1882 }
1883 if (rc) {
6de783f6
KB		 1884 if (device->is_physical_device)
1885 dev_warn(&ctrl_info->pci_dev->dev,
1886 "obtaining device info failed, skipping physical device %016llx\n",
1887 get_unaligned_be64(
1888 &phys_lun_ext_entry->wwid));
1889 else
1890 dev_warn(&ctrl_info->pci_dev->dev,
1891 "obtaining device info failed, skipping logical device %08x%08x\n",
1892 *((u32 *)&device->scsi3addr),
1893 *((u32 *)&device->scsi3addr[4]));
6c223761
KB		 1894 rc = 0;
1895 continue;
1896 }
1897
1898 if (!pqi_is_supported_device(device))
1899 continue;
1900
1901 pqi_assign_bus_target_lun(device);
1902
6c223761
KB		 1903 if (device->is_physical_device) {
1904 device->wwid = phys_lun_ext_entry->wwid;
1905 if ((phys_lun_ext_entry->device_flags &
1906 REPORT_PHYS_LUN_DEV_FLAG_AIO_ENABLED) &&
1907 phys_lun_ext_entry->aio_handle)
1908 device->aio_enabled = true;
1909 } else {
1910 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
1911 sizeof(device->volume_id));
1912 }
1913
1914 switch (device->devtype) {
1915 case TYPE_DISK:
1916 case TYPE_ZBC:
1917 case TYPE_ENCLOSURE:
1918 if (device->is_physical_device) {
1919 device->sas_address =
1920 get_unaligned_be64(&device->wwid);
1921 if (device->devtype == TYPE_DISK ||
1922 device->devtype == TYPE_ZBC) {
1923 device->aio_handle =
1924 phys_lun_ext_entry->aio_handle;
1925 pqi_get_physical_disk_info(ctrl_info,
1926 device, id_phys);
1927 }
1928 }
1929 break;
1930 }
1931
1932 new_device_list[num_valid_devices++] = device;
1933 }
1934
1935 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
1936
1937out:
1938 list_for_each_entry_safe(device, next, &new_device_list_head,
1939 new_device_list_entry) {
1940 if (device->keep_device)
1941 continue;
1942 list_del(&device->new_device_list_entry);
1943 pqi_free_device(device);
1944 }
1945
1946 kfree(new_device_list);
1947 kfree(physdev_list);
1948 kfree(logdev_list);
1949 kfree(id_phys);
1950
1951 return rc;
1952}
1953
1954static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1955{
1956 unsigned long flags;
1957 struct pqi_scsi_dev *device;
6c223761 1958
a37ef745
KB		 1959 while (1) {
1960 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1961
1962 device = list_first_entry_or_null(&ctrl_info->scsi_device_list,
1963 struct pqi_scsi_dev, scsi_device_list_entry);
1964 if (device)
1965 list_del(&device->scsi_device_list_entry);
1966
1967 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
1968 flags);
1969
1970 if (!device)
1971 break;
6c223761 1972
6c223761
KB		 1973 if (device->sdev)
1974 pqi_remove_device(ctrl_info, device);
6c223761
KB		 1975 pqi_free_device(device);
1976 }
6c223761
KB		 1977}
1978
1979static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1980{
1981 int rc;
1982
1983 if (pqi_ctrl_offline(ctrl_info))
1984 return -ENXIO;
1985
1986 mutex_lock(&ctrl_info->scan_mutex);
1987
1988 rc = pqi_update_scsi_devices(ctrl_info);
1989 if (rc)
5f310425 1990 pqi_schedule_rescan_worker_delayed(ctrl_info);
6c223761
KB		 1991
1992 mutex_unlock(&ctrl_info->scan_mutex);
1993
1994 return rc;
1995}
1996
1997static void pqi_scan_start(struct Scsi_Host *shost)
1998{
1999 pqi_scan_scsi_devices(shost_to_hba(shost));
2000}
2001
2002/* Returns TRUE if scan is finished. */
2003
2004static int pqi_scan_finished(struct Scsi_Host *shost,
2005 unsigned long elapsed_time)
2006{
2007 struct pqi_ctrl_info *ctrl_info;
2008
2009 ctrl_info = shost_priv(shost);
2010
2011 return !mutex_is_locked(&ctrl_info->scan_mutex);
2012}
2013
061ef06a
KB		 2014static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
2015{
2016 mutex_lock(&ctrl_info->scan_mutex);
2017 mutex_unlock(&ctrl_info->scan_mutex);
2018}
2019
2020static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
2021{
2022 mutex_lock(&ctrl_info->lun_reset_mutex);
2023 mutex_unlock(&ctrl_info->lun_reset_mutex);
2024}
2025
6c223761
KB		 2026static inline void pqi_set_encryption_info(
2027 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map,
2028 u64 first_block)
2029{
2030 u32 volume_blk_size;
2031
2032 /*
2033 * Set the encryption tweak values based on logical block address.
2034 * If the block size is 512, the tweak value is equal to the LBA.
2035 * For other block sizes, tweak value is (LBA * block size) / 512.
2036 */
2037 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2038 if (volume_blk_size != 512)
2039 first_block = (first_block * volume_blk_size) / 512;
2040
2041 encryption_info->data_encryption_key_index =
2042 get_unaligned_le16(&raid_map->data_encryption_key_index);
2043 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2044 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2045}
2046
2047/*
588a63fe 2048 * Attempt to perform RAID bypass mapping for a logical volume I/O.
6c223761
KB		 2049 */
2050
2051#define PQI_RAID_BYPASS_INELIGIBLE 1
2052
2053static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2054 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2055 struct pqi_queue_group *queue_group)
2056{
2057 struct raid_map *raid_map;
2058 bool is_write = false;
2059 u32 map_index;
2060 u64 first_block;
2061 u64 last_block;
2062 u32 block_cnt;
2063 u32 blocks_per_row;
2064 u64 first_row;
2065 u64 last_row;
2066 u32 first_row_offset;
2067 u32 last_row_offset;
2068 u32 first_column;
2069 u32 last_column;
2070 u64 r0_first_row;
2071 u64 r0_last_row;
2072 u32 r5or6_blocks_per_row;
2073 u64 r5or6_first_row;
2074 u64 r5or6_last_row;
2075 u32 r5or6_first_row_offset;
2076 u32 r5or6_last_row_offset;
2077 u32 r5or6_first_column;
2078 u32 r5or6_last_column;
2079 u16 data_disks_per_row;
2080 u32 total_disks_per_row;
2081 u16 layout_map_count;
2082 u32 stripesize;
2083 u16 strip_size;
2084 u32 first_group;
2085 u32 last_group;
2086 u32 current_group;
2087 u32 map_row;
2088 u32 aio_handle;
2089 u64 disk_block;
2090 u32 disk_block_cnt;
2091 u8 cdb[16];
2092 u8 cdb_length;
2093 int offload_to_mirror;
2094 struct pqi_encryption_info *encryption_info_ptr;
2095 struct pqi_encryption_info encryption_info;
2096#if BITS_PER_LONG == 32
2097 u64 tmpdiv;
2098#endif
2099
2100 /* Check for valid opcode, get LBA and block count. */
2101 switch (scmd->cmnd[0]) {
2102 case WRITE_6:
2103 is_write = true;
2104 /* fall through */
2105 case READ_6:
e018ef57
B		 2106 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2107 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
6c223761
KB		 2108 block_cnt = (u32)scmd->cmnd[4];
2109 if (block_cnt == 0)
2110 block_cnt = 256;
2111 break;
2112 case WRITE_10:
2113 is_write = true;
2114 /* fall through */
2115 case READ_10:
2116 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2117 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2118 break;
2119 case WRITE_12:
2120 is_write = true;
2121 /* fall through */
2122 case READ_12:
2123 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2124 block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2125 break;
2126 case WRITE_16:
2127 is_write = true;
2128 /* fall through */
2129 case READ_16:
2130 first_block = get_unaligned_be64(&scmd->cmnd[2]);
2131 block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2132 break;
2133 default:
2134 /* Process via normal I/O path. */
2135 return PQI_RAID_BYPASS_INELIGIBLE;
2136 }
2137
2138 /* Check for write to non-RAID-0. */
2139 if (is_write && device->raid_level != SA_RAID_0)
2140 return PQI_RAID_BYPASS_INELIGIBLE;
2141
2142 if (unlikely(block_cnt == 0))
2143 return PQI_RAID_BYPASS_INELIGIBLE;
2144
2145 last_block = first_block + block_cnt - 1;
2146 raid_map = device->raid_map;
2147
2148 /* Check for invalid block or wraparound. */
2149 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2150 last_block < first_block)
2151 return PQI_RAID_BYPASS_INELIGIBLE;
2152
2153 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row);
2154 strip_size = get_unaligned_le16(&raid_map->strip_size);
2155 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2156
2157 /* Calculate stripe information for the request. */
2158 blocks_per_row = data_disks_per_row * strip_size;
2159#if BITS_PER_LONG == 32
2160 tmpdiv = first_block;
2161 do_div(tmpdiv, blocks_per_row);
2162 first_row = tmpdiv;
2163 tmpdiv = last_block;
2164 do_div(tmpdiv, blocks_per_row);
2165 last_row = tmpdiv;
2166 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2167 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2168 tmpdiv = first_row_offset;
2169 do_div(tmpdiv, strip_size);
2170 first_column = tmpdiv;
2171 tmpdiv = last_row_offset;
2172 do_div(tmpdiv, strip_size);
2173 last_column = tmpdiv;
2174#else
2175 first_row = first_block / blocks_per_row;
2176 last_row = last_block / blocks_per_row;
2177 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2178 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2179 first_column = first_row_offset / strip_size;
2180 last_column = last_row_offset / strip_size;
2181#endif
2182
2183 /* If this isn't a single row/column then give to the controller. */
2184 if (first_row != last_row || first_column != last_column)
2185 return PQI_RAID_BYPASS_INELIGIBLE;
2186
2187 /* Proceeding with driver mapping. */
2188 total_disks_per_row = data_disks_per_row +
2189 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2190 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2191 get_unaligned_le16(&raid_map->row_cnt);
2192 map_index = (map_row * total_disks_per_row) + first_column;
2193
2194 /* RAID 1 */
2195 if (device->raid_level == SA_RAID_1) {
2196 if (device->offload_to_mirror)
2197 map_index += data_disks_per_row;
2198 device->offload_to_mirror = !device->offload_to_mirror;
2199 } else if (device->raid_level == SA_RAID_ADM) {
2200 /* RAID ADM */
2201 /*
2202 * Handles N-way mirrors (R1-ADM) and R10 with # of drives
2203 * divisible by 3.
2204 */
2205 offload_to_mirror = device->offload_to_mirror;
2206 if (offload_to_mirror == 0) {
2207 /* use physical disk in the first mirrored group. */
2208 map_index %= data_disks_per_row;
2209 } else {
2210 do {
2211 /*
2212 * Determine mirror group that map_index
2213 * indicates.
2214 */
2215 current_group = map_index / data_disks_per_row;
2216
2217 if (offload_to_mirror != current_group) {
2218 if (current_group <
2219 layout_map_count - 1) {
2220 /*
2221 * Select raid index from
2222 * next group.
2223 */
2224 map_index += data_disks_per_row;
2225 current_group++;
2226 } else {
2227 /*
2228 * Select raid index from first
2229 * group.
2230 */
2231 map_index %= data_disks_per_row;
2232 current_group = 0;
2233 }
2234 }
2235 } while (offload_to_mirror != current_group);
2236 }
2237
2238 /* Set mirror group to use next time. */
2239 offload_to_mirror =
2240 (offload_to_mirror >= layout_map_count - 1) ?
2241 0 : offload_to_mirror + 1;
2242 WARN_ON(offload_to_mirror >= layout_map_count);
2243 device->offload_to_mirror = offload_to_mirror;
2244 /*
2245 * Avoid direct use of device->offload_to_mirror within this
2246 * function since multiple threads might simultaneously
2247 * increment it beyond the range of device->layout_map_count -1.
2248 */
2249 } else if ((device->raid_level == SA_RAID_5 ||
2250 device->raid_level == SA_RAID_6) && layout_map_count > 1) {
2251 /* RAID 50/60 */
2252 /* Verify first and last block are in same RAID group */
2253 r5or6_blocks_per_row = strip_size * data_disks_per_row;
2254 stripesize = r5or6_blocks_per_row * layout_map_count;
2255#if BITS_PER_LONG == 32
2256 tmpdiv = first_block;
2257 first_group = do_div(tmpdiv, stripesize);
2258 tmpdiv = first_group;
2259 do_div(tmpdiv, r5or6_blocks_per_row);
2260 first_group = tmpdiv;
2261 tmpdiv = last_block;
2262 last_group = do_div(tmpdiv, stripesize);
2263 tmpdiv = last_group;
2264 do_div(tmpdiv, r5or6_blocks_per_row);
2265 last_group = tmpdiv;
2266#else
2267 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
2268 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
2269#endif
2270 if (first_group != last_group)
2271 return PQI_RAID_BYPASS_INELIGIBLE;
2272
2273 /* Verify request is in a single row of RAID 5/6 */
2274#if BITS_PER_LONG == 32
2275 tmpdiv = first_block;
2276 do_div(tmpdiv, stripesize);
2277 first_row = r5or6_first_row = r0_first_row = tmpdiv;
2278 tmpdiv = last_block;
2279 do_div(tmpdiv, stripesize);
2280 r5or6_last_row = r0_last_row = tmpdiv;
2281#else
2282 first_row = r5or6_first_row = r0_first_row =
2283 first_block / stripesize;
2284 r5or6_last_row = r0_last_row = last_block / stripesize;
2285#endif
2286 if (r5or6_first_row != r5or6_last_row)
2287 return PQI_RAID_BYPASS_INELIGIBLE;
2288
2289 /* Verify request is in a single column */
2290#if BITS_PER_LONG == 32
2291 tmpdiv = first_block;
2292 first_row_offset = do_div(tmpdiv, stripesize);
2293 tmpdiv = first_row_offset;
2294 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row);
2295 r5or6_first_row_offset = first_row_offset;
2296 tmpdiv = last_block;
2297 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
2298 tmpdiv = r5or6_last_row_offset;
2299 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
2300 tmpdiv = r5or6_first_row_offset;
2301 do_div(tmpdiv, strip_size);
2302 first_column = r5or6_first_column = tmpdiv;
2303 tmpdiv = r5or6_last_row_offset;
2304 do_div(tmpdiv, strip_size);
2305 r5or6_last_column = tmpdiv;
2306#else
2307 first_row_offset = r5or6_first_row_offset =
2308 (u32)((first_block % stripesize) %
2309 r5or6_blocks_per_row);
2310
2311 r5or6_last_row_offset =
2312 (u32)((last_block % stripesize) %
2313 r5or6_blocks_per_row);
2314
2315 first_column = r5or6_first_row_offset / strip_size;
2316 r5or6_first_column = first_column;
2317 r5or6_last_column = r5or6_last_row_offset / strip_size;
2318#endif
2319 if (r5or6_first_column != r5or6_last_column)
2320 return PQI_RAID_BYPASS_INELIGIBLE;
2321
2322 /* Request is eligible */
2323 map_row =
2324 ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2325 get_unaligned_le16(&raid_map->row_cnt);
2326
2327 map_index = (first_group *
2328 (get_unaligned_le16(&raid_map->row_cnt) *
2329 total_disks_per_row)) +
2330 (map_row * total_disks_per_row) + first_column;
2331 }
2332
2333 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
2334 return PQI_RAID_BYPASS_INELIGIBLE;
2335
2336 aio_handle = raid_map->disk_data[map_index].aio_handle;
2337 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2338 first_row * strip_size +
2339 (first_row_offset - first_column * strip_size);
2340 disk_block_cnt = block_cnt;
2341
2342 /* Handle differing logical/physical block sizes. */
2343 if (raid_map->phys_blk_shift) {
2344 disk_block <<= raid_map->phys_blk_shift;
2345 disk_block_cnt <<= raid_map->phys_blk_shift;
2346 }
2347
2348 if (unlikely(disk_block_cnt > 0xffff))
2349 return PQI_RAID_BYPASS_INELIGIBLE;
2350
2351 /* Build the new CDB for the physical disk I/O. */
2352 if (disk_block > 0xffffffff) {
2353 cdb[0] = is_write ? WRITE_16 : READ_16;
2354 cdb[1] = 0;
2355 put_unaligned_be64(disk_block, &cdb[2]);
2356 put_unaligned_be32(disk_block_cnt, &cdb[10]);
2357 cdb[14] = 0;
2358 cdb[15] = 0;
2359 cdb_length = 16;
2360 } else {
2361 cdb[0] = is_write ? WRITE_10 : READ_10;
2362 cdb[1] = 0;
2363 put_unaligned_be32((u32)disk_block, &cdb[2]);
2364 cdb[6] = 0;
2365 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]);
2366 cdb[9] = 0;
2367 cdb_length = 10;
2368 }
2369
2370 if (get_unaligned_le16(&raid_map->flags) &
2371 RAID_MAP_ENCRYPTION_ENABLED) {
2372 pqi_set_encryption_info(&encryption_info, raid_map,
2373 first_block);
2374 encryption_info_ptr = &encryption_info;
2375 } else {
2376 encryption_info_ptr = NULL;
2377 }
2378
2379 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
376fb880 2380 cdb, cdb_length, queue_group, encryption_info_ptr, true);
6c223761
KB		 2381}
2382
2383#define PQI_STATUS_IDLE 0x0
2384
2385#define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2386#define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2387
2388#define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2389#define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2390#define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2391#define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2392#define PQI_DEVICE_STATE_ERROR 0x4
2393
2394#define PQI_MODE_READY_TIMEOUT_SECS 30
2395#define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2396
2397static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2398{
2399 struct pqi_device_registers __iomem *pqi_registers;
2400 unsigned long timeout;
2401 u64 signature;
2402 u8 status;
2403
2404 pqi_registers = ctrl_info->pqi_registers;
2405 timeout = (PQI_MODE_READY_TIMEOUT_SECS * HZ) + jiffies;
2406
2407 while (1) {
2408 signature = readq(&pqi_registers->signature);
2409 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2410 sizeof(signature)) == 0)
2411 break;
2412 if (time_after(jiffies, timeout)) {
2413 dev_err(&ctrl_info->pci_dev->dev,
2414 "timed out waiting for PQI signature\n");
2415 return -ETIMEDOUT;
2416 }
2417 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2418 }
2419
2420 while (1) {
2421 status = readb(&pqi_registers->function_and_status_code);
2422 if (status == PQI_STATUS_IDLE)
2423 break;
2424 if (time_after(jiffies, timeout)) {
2425 dev_err(&ctrl_info->pci_dev->dev,
2426 "timed out waiting for PQI IDLE\n");
2427 return -ETIMEDOUT;
2428 }
2429 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2430 }
2431
2432 while (1) {
2433 if (readl(&pqi_registers->device_status) ==
2434 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2435 break;
2436 if (time_after(jiffies, timeout)) {
2437 dev_err(&ctrl_info->pci_dev->dev,
2438 "timed out waiting for PQI all registers ready\n");
2439 return -ETIMEDOUT;
2440 }
2441 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2442 }
2443
2444 return 0;
2445}
2446
2447static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2448{
2449 struct pqi_scsi_dev *device;
2450
2451 device = io_request->scmd->device->hostdata;
588a63fe 2452 device->raid_bypass_enabled = false;
376fb880 2453 device->aio_enabled = false;
6c223761
KB		 2454}
2455
d87d5474 2456static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
6c223761
KB		 2457{
2458 struct pqi_ctrl_info *ctrl_info;
e58081a7 2459 struct pqi_scsi_dev *device;
6c223761 2460
03b288cf
KB		 2461 device = sdev->hostdata;
2462 if (device->device_offline)
2463 return;
2464
2465 device->device_offline = true;
2466 scsi_device_set_state(sdev, SDEV_OFFLINE);
2467 ctrl_info = shost_to_hba(sdev->host);
2468 pqi_schedule_rescan_worker(ctrl_info);
2469 dev_err(&ctrl_info->pci_dev->dev, "offlined %s scsi %d:%d:%d:%d\n",
2470 path, ctrl_info->scsi_host->host_no, device->bus,
2471 device->target, device->lun);
6c223761
KB		 2472}
2473
2474static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2475{
2476 u8 scsi_status;
2477 u8 host_byte;
2478 struct scsi_cmnd *scmd;
2479 struct pqi_raid_error_info *error_info;
2480 size_t sense_data_length;
2481 int residual_count;
2482 int xfer_count;
2483 struct scsi_sense_hdr sshdr;
2484
2485 scmd = io_request->scmd;
2486 if (!scmd)
2487 return;
2488
2489 error_info = io_request->error_info;
2490 scsi_status = error_info->status;
2491 host_byte = DID_OK;
2492
f5b63206
KB		 2493 switch (error_info->data_out_result) {
2494 case PQI_DATA_IN_OUT_GOOD:
2495 break;
2496 case PQI_DATA_IN_OUT_UNDERFLOW:
6c223761
KB		 2497 xfer_count =
2498 get_unaligned_le32(&error_info->data_out_transferred);
2499 residual_count = scsi_bufflen(scmd) - xfer_count;
2500 scsi_set_resid(scmd, residual_count);
2501 if (xfer_count < scmd->underflow)
2502 host_byte = DID_SOFT_ERROR;
f5b63206
KB		 2503 break;
2504 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
2505 case PQI_DATA_IN_OUT_ABORTED:
2506 host_byte = DID_ABORT;
2507 break;
2508 case PQI_DATA_IN_OUT_TIMEOUT:
2509 host_byte = DID_TIME_OUT;
2510 break;
2511 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
2512 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
2513 case PQI_DATA_IN_OUT_BUFFER_ERROR:
2514 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
2515 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
2516 case PQI_DATA_IN_OUT_ERROR:
2517 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
2518 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
2519 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
2520 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
2521 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
2522 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
2523 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
2524 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
2525 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
2526 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
2527 default:
2528 host_byte = DID_ERROR;
2529 break;
6c223761
KB		 2530 }
2531
2532 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2533 if (sense_data_length == 0)
2534 sense_data_length =
2535 get_unaligned_le16(&error_info->response_data_length);
2536 if (sense_data_length) {
2537 if (sense_data_length > sizeof(error_info->data))
2538 sense_data_length = sizeof(error_info->data);
2539
2540 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2541 scsi_normalize_sense(error_info->data,
2542 sense_data_length, &sshdr) &&
2543 sshdr.sense_key == HARDWARE_ERROR &&
2544 sshdr.asc == 0x3e &&
2545 sshdr.ascq == 0x1) {
d87d5474 2546 pqi_take_device_offline(scmd->device, "RAID");
6c223761
KB		 2547 host_byte = DID_NO_CONNECT;
2548 }
2549
2550 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2551 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2552 memcpy(scmd->sense_buffer, error_info->data,
2553 sense_data_length);
2554 }
2555
2556 scmd->result = scsi_status;
2557 set_host_byte(scmd, host_byte);
2558}
2559
2560static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2561{
2562 u8 scsi_status;
2563 u8 host_byte;
2564 struct scsi_cmnd *scmd;
2565 struct pqi_aio_error_info *error_info;
2566 size_t sense_data_length;
2567 int residual_count;
2568 int xfer_count;
2569 bool device_offline;
2570
2571 scmd = io_request->scmd;
2572 error_info = io_request->error_info;
2573 host_byte = DID_OK;
2574 sense_data_length = 0;
2575 device_offline = false;
2576
2577 switch (error_info->service_response) {
2578 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2579 scsi_status = error_info->status;
2580 break;
2581 case PQI_AIO_SERV_RESPONSE_FAILURE:
2582 switch (error_info->status) {
2583 case PQI_AIO_STATUS_IO_ABORTED:
2584 scsi_status = SAM_STAT_TASK_ABORTED;
2585 break;
2586 case PQI_AIO_STATUS_UNDERRUN:
2587 scsi_status = SAM_STAT_GOOD;
2588 residual_count = get_unaligned_le32(
2589 &error_info->residual_count);
2590 scsi_set_resid(scmd, residual_count);
2591 xfer_count = scsi_bufflen(scmd) - residual_count;
2592 if (xfer_count < scmd->underflow)
2593 host_byte = DID_SOFT_ERROR;
2594 break;
2595 case PQI_AIO_STATUS_OVERRUN:
2596 scsi_status = SAM_STAT_GOOD;
2597 break;
2598 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2599 pqi_aio_path_disabled(io_request);
2600 scsi_status = SAM_STAT_GOOD;
2601 io_request->status = -EAGAIN;
2602 break;
2603 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
2604 case PQI_AIO_STATUS_INVALID_DEVICE:
376fb880
KB		 2605 if (!io_request->raid_bypass) {
2606 device_offline = true;
2607 pqi_take_device_offline(scmd->device, "AIO");
2608 host_byte = DID_NO_CONNECT;
2609 }
6c223761
KB		 2610 scsi_status = SAM_STAT_CHECK_CONDITION;
2611 break;
2612 case PQI_AIO_STATUS_IO_ERROR:
2613 default:
2614 scsi_status = SAM_STAT_CHECK_CONDITION;
2615 break;
2616 }
2617 break;
2618 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
2619 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
2620 scsi_status = SAM_STAT_GOOD;
2621 break;
2622 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
2623 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
2624 default:
2625 scsi_status = SAM_STAT_CHECK_CONDITION;
2626 break;
2627 }
2628
2629 if (error_info->data_present) {
2630 sense_data_length =
2631 get_unaligned_le16(&error_info->data_length);
2632 if (sense_data_length) {
2633 if (sense_data_length > sizeof(error_info->data))
2634 sense_data_length = sizeof(error_info->data);
2635 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2636 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2637 memcpy(scmd->sense_buffer, error_info->data,
2638 sense_data_length);
2639 }
2640 }
2641
2642 if (device_offline && sense_data_length == 0)
2643 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
2644 0x3e, 0x1);
2645
2646 scmd->result = scsi_status;
2647 set_host_byte(scmd, host_byte);
2648}
2649
2650static void pqi_process_io_error(unsigned int iu_type,
2651 struct pqi_io_request *io_request)
2652{
2653 switch (iu_type) {
2654 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2655 pqi_process_raid_io_error(io_request);
2656 break;
2657 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2658 pqi_process_aio_io_error(io_request);
2659 break;
2660 }
2661}
2662
2663static int pqi_interpret_task_management_response(
2664 struct pqi_task_management_response *response)
2665{
2666 int rc;
2667
2668 switch (response->response_code) {
b17f0486
KB		 2669 case SOP_TMF_COMPLETE:
2670 case SOP_TMF_FUNCTION_SUCCEEDED:
6c223761
KB		 2671 rc = 0;
2672 break;
2673 default:
2674 rc = -EIO;
2675 break;
2676 }
2677
2678 return rc;
2679}
2680
2681static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info,
2682 struct pqi_queue_group *queue_group)
2683{
2684 unsigned int num_responses;
2685 pqi_index_t oq_pi;
2686 pqi_index_t oq_ci;
2687 struct pqi_io_request *io_request;
2688 struct pqi_io_response *response;
2689 u16 request_id;
2690
2691 num_responses = 0;
2692 oq_ci = queue_group->oq_ci_copy;
2693
2694 while (1) {
2695 oq_pi = *queue_group->oq_pi;
2696 if (oq_pi == oq_ci)
2697 break;
2698
2699 num_responses++;
2700 response = queue_group->oq_element_array +
2701 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
2702
2703 request_id = get_unaligned_le16(&response->request_id);
2704 WARN_ON(request_id >= ctrl_info->max_io_slots);
2705
2706 io_request = &ctrl_info->io_request_pool[request_id];
2707 WARN_ON(atomic_read(&io_request->refcount) == 0);
2708
2709 switch (response->header.iu_type) {
2710 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
2711 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2712 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
2713 break;
2714 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
2715 io_request->status =
2716 pqi_interpret_task_management_response(
2717 (void *)response);
2718 break;
2719 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
2720 pqi_aio_path_disabled(io_request);
2721 io_request->status = -EAGAIN;
2722 break;
2723 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2724 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2725 io_request->error_info = ctrl_info->error_buffer +
2726 (get_unaligned_le16(&response->error_index) *
2727 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
2728 pqi_process_io_error(response->header.iu_type,
2729 io_request);
2730 break;
2731 default:
2732 dev_err(&ctrl_info->pci_dev->dev,
2733 "unexpected IU type: 0x%x\n",
2734 response->header.iu_type);
6c223761
KB		 2735 break;
2736 }
2737
2738 io_request->io_complete_callback(io_request,
2739 io_request->context);
2740
2741 /*
2742 * Note that the I/O request structure CANNOT BE TOUCHED after
2743 * returning from the I/O completion callback!
2744 */
2745
2746 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
2747 }
2748
2749 if (num_responses) {
2750 queue_group->oq_ci_copy = oq_ci;
2751 writel(oq_ci, queue_group->oq_ci);
2752 }
2753
2754 return num_responses;
2755}
2756
2757static inline unsigned int pqi_num_elements_free(unsigned int pi,
df7a1fcf 2758 unsigned int ci, unsigned int elements_in_queue)
6c223761
KB		 2759{
2760 unsigned int num_elements_used;
2761
2762 if (pi >= ci)
2763 num_elements_used = pi - ci;
2764 else
2765 num_elements_used = elements_in_queue - ci + pi;
2766
2767 return elements_in_queue - num_elements_used - 1;
2768}
2769
98f87667 2770static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 2771 struct pqi_event_acknowledge_request *iu, size_t iu_length)
2772{
2773 pqi_index_t iq_pi;
2774 pqi_index_t iq_ci;
2775 unsigned long flags;
2776 void *next_element;
6c223761
KB		 2777 struct pqi_queue_group *queue_group;
2778
2779 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
2780 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
2781
6c223761
KB		 2782 while (1) {
2783 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
2784
2785 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
2786 iq_ci = *queue_group->iq_ci[RAID_PATH];
2787
2788 if (pqi_num_elements_free(iq_pi, iq_ci,
2789 ctrl_info->num_elements_per_iq))
2790 break;
2791
2792 spin_unlock_irqrestore(
2793 &queue_group->submit_lock[RAID_PATH], flags);
2794
98f87667 2795 if (pqi_ctrl_offline(ctrl_info))
6c223761 2796 return;
6c223761
KB		 2797 }
2798
2799 next_element = queue_group->iq_element_array[RAID_PATH] +
2800 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
2801
2802 memcpy(next_element, iu, iu_length);
2803
2804 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
6c223761
KB		 2805 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
2806
2807 /*
2808 * This write notifies the controller that an IU is available to be
2809 * processed.
2810 */
2811 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
2812
2813 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
6c223761
KB		 2814}
2815
2816static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
2817 struct pqi_event *event)
2818{
2819 struct pqi_event_acknowledge_request request;
2820
2821 memset(&request, 0, sizeof(request));
2822
2823 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
2824 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
2825 &request.header.iu_length);
2826 request.event_type = event->event_type;
2827 request.event_id = event->event_id;
2828 request.additional_event_id = event->additional_event_id;
2829
98f87667 2830 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
6c223761
KB		 2831}
2832
2833static void pqi_event_worker(struct work_struct *work)
2834{
2835 unsigned int i;
2836 struct pqi_ctrl_info *ctrl_info;
6a50d6ad 2837 struct pqi_event *event;
6c223761
KB		 2838
2839 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
2840
7561a7e4
KB		 2841 pqi_ctrl_busy(ctrl_info);
2842 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
5f310425
KB		 2843 if (pqi_ctrl_offline(ctrl_info))
2844 goto out;
2845
2846 pqi_schedule_rescan_worker_delayed(ctrl_info);
7561a7e4 2847
6a50d6ad 2848 event = ctrl_info->events;
6c223761 2849 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
6a50d6ad
KB		 2850 if (event->pending) {
2851 event->pending = false;
2852 pqi_acknowledge_event(ctrl_info, event);
6c223761 2853 }
6a50d6ad 2854 event++;
6c223761
KB		 2855 }
2856
5f310425 2857out:
7561a7e4 2858 pqi_ctrl_unbusy(ctrl_info);
6c223761
KB		 2859}
2860
98f87667 2861#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * HZ)
6c223761
KB		 2862
2863static void pqi_heartbeat_timer_handler(unsigned long data)
2864{
2865 int num_interrupts;
98f87667 2866 u32 heartbeat_count;
6c223761
KB		 2867 struct pqi_ctrl_info *ctrl_info = (struct pqi_ctrl_info *)data;
2868
98f87667
KB		 2869 pqi_check_ctrl_health(ctrl_info);
2870 if (pqi_ctrl_offline(ctrl_info))
061ef06a
KB		 2871 return;
2872
6c223761 2873 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
98f87667 2874 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
6c223761
KB		 2875
2876 if (num_interrupts == ctrl_info->previous_num_interrupts) {
98f87667
KB		 2877 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
2878 dev_err(&ctrl_info->pci_dev->dev,
2879 "no heartbeat detected - last heartbeat count: %u\n",
2880 heartbeat_count);
6c223761
KB		 2881 pqi_take_ctrl_offline(ctrl_info);
2882 return;
2883 }
6c223761 2884 } else {
98f87667 2885 ctrl_info->previous_num_interrupts = num_interrupts;
6c223761
KB		 2886 }
2887
98f87667 2888 ctrl_info->previous_heartbeat_count = heartbeat_count;
6c223761
KB		 2889 mod_timer(&ctrl_info->heartbeat_timer,
2890 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
2891}
2892
2893static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
2894{
98f87667
KB		 2895 if (!ctrl_info->heartbeat_counter)
2896 return;
2897
6c223761
KB		 2898 ctrl_info->previous_num_interrupts =
2899 atomic_read(&ctrl_info->num_interrupts);
98f87667
KB		 2900 ctrl_info->previous_heartbeat_count =
2901 pqi_read_heartbeat_counter(ctrl_info);
6c223761 2902
6c223761
KB		 2903 ctrl_info->heartbeat_timer.expires =
2904 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
2905 ctrl_info->heartbeat_timer.data = (unsigned long)ctrl_info;
2906 ctrl_info->heartbeat_timer.function = pqi_heartbeat_timer_handler;
061ef06a 2907 add_timer(&ctrl_info->heartbeat_timer);
6c223761
KB		 2908}
2909
2910static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
2911{
98f87667 2912 del_timer_sync(&ctrl_info->heartbeat_timer);
6c223761
KB		 2913}
2914
6a50d6ad 2915static inline int pqi_event_type_to_event_index(unsigned int event_type)
6c223761
KB		 2916{
2917 int index;
2918
6a50d6ad
KB		 2919 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
2920 if (event_type == pqi_supported_event_types[index])
2921 return index;
6c223761 2922
6a50d6ad
KB		 2923 return -1;
2924}
2925
2926static inline bool pqi_is_supported_event(unsigned int event_type)
2927{
2928 return pqi_event_type_to_event_index(event_type) != -1;
6c223761
KB		 2929}
2930
2931static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
2932{
2933 unsigned int num_events;
2934 pqi_index_t oq_pi;
2935 pqi_index_t oq_ci;
2936 struct pqi_event_queue *event_queue;
2937 struct pqi_event_response *response;
6a50d6ad 2938 struct pqi_event *event;
6c223761
KB		 2939 int event_index;
2940
2941 event_queue = &ctrl_info->event_queue;
2942 num_events = 0;
6c223761
KB		 2943 oq_ci = event_queue->oq_ci_copy;
2944
2945 while (1) {
2946 oq_pi = *event_queue->oq_pi;
2947 if (oq_pi == oq_ci)
2948 break;
2949
2950 num_events++;
2951 response = event_queue->oq_element_array +
2952 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
2953
2954 event_index =
2955 pqi_event_type_to_event_index(response->event_type);
2956
2957 if (event_index >= 0) {
2958 if (response->request_acknowlege) {
6a50d6ad
KB		 2959 event = &ctrl_info->events[event_index];
2960 event->pending = true;
2961 event->event_type = response->event_type;
2962 event->event_id = response->event_id;
2963 event->additional_event_id =
6c223761 2964 response->additional_event_id;
6c223761
KB		 2965 }
2966 }
2967
2968 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
2969 }
2970
2971 if (num_events) {
2972 event_queue->oq_ci_copy = oq_ci;
2973 writel(oq_ci, event_queue->oq_ci);
98f87667 2974 schedule_work(&ctrl_info->event_work);
6c223761
KB		 2975 }
2976
2977 return num_events;
2978}
2979
061ef06a
KB		 2980#define PQI_LEGACY_INTX_MASK 0x1
2981
2982static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info,
2983 bool enable_intx)
2984{
2985 u32 intx_mask;
2986 struct pqi_device_registers __iomem *pqi_registers;
2987 volatile void __iomem *register_addr;
2988
2989 pqi_registers = ctrl_info->pqi_registers;
2990
2991 if (enable_intx)
2992 register_addr = &pqi_registers->legacy_intx_mask_clear;
2993 else
2994 register_addr = &pqi_registers->legacy_intx_mask_set;
2995
2996 intx_mask = readl(register_addr);
2997 intx_mask |= PQI_LEGACY_INTX_MASK;
2998 writel(intx_mask, register_addr);
2999}
3000
3001static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3002 enum pqi_irq_mode new_mode)
3003{
3004 switch (ctrl_info->irq_mode) {
3005 case IRQ_MODE_MSIX:
3006 switch (new_mode) {
3007 case IRQ_MODE_MSIX:
3008 break;
3009 case IRQ_MODE_INTX:
3010 pqi_configure_legacy_intx(ctrl_info, true);
061ef06a
KB		 3011 sis_enable_intx(ctrl_info);
3012 break;
3013 case IRQ_MODE_NONE:
061ef06a
KB		 3014 break;
3015 }
3016 break;
3017 case IRQ_MODE_INTX:
3018 switch (new_mode) {
3019 case IRQ_MODE_MSIX:
3020 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3021 sis_enable_msix(ctrl_info);
3022 break;
3023 case IRQ_MODE_INTX:
3024 break;
3025 case IRQ_MODE_NONE:
3026 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3027 break;
3028 }
3029 break;
3030 case IRQ_MODE_NONE:
3031 switch (new_mode) {
3032 case IRQ_MODE_MSIX:
3033 sis_enable_msix(ctrl_info);
3034 break;
3035 case IRQ_MODE_INTX:
3036 pqi_configure_legacy_intx(ctrl_info, true);
3037 sis_enable_intx(ctrl_info);
3038 break;
3039 case IRQ_MODE_NONE:
3040 break;
3041 }
3042 break;
3043 }
3044
3045 ctrl_info->irq_mode = new_mode;
3046}
3047
3048#define PQI_LEGACY_INTX_PENDING 0x1
3049
3050static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3051{
3052 bool valid_irq;
3053 u32 intx_status;
3054
3055 switch (ctrl_info->irq_mode) {
3056 case IRQ_MODE_MSIX:
3057 valid_irq = true;
3058 break;
3059 case IRQ_MODE_INTX:
3060 intx_status =
3061 readl(&ctrl_info->pqi_registers->legacy_intx_status);
3062 if (intx_status & PQI_LEGACY_INTX_PENDING)
3063 valid_irq = true;
3064 else
3065 valid_irq = false;
3066 break;
3067 case IRQ_MODE_NONE:
3068 default:
3069 valid_irq = false;
3070 break;
3071 }
3072
3073 return valid_irq;
3074}
3075
6c223761
KB		 3076static irqreturn_t pqi_irq_handler(int irq, void *data)
3077{
3078 struct pqi_ctrl_info *ctrl_info;
3079 struct pqi_queue_group *queue_group;
3080 unsigned int num_responses_handled;
3081
3082 queue_group = data;
3083 ctrl_info = queue_group->ctrl_info;
3084
061ef06a 3085 if (!pqi_is_valid_irq(ctrl_info))
6c223761
KB		 3086 return IRQ_NONE;
3087
3088 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3089
3090 if (irq == ctrl_info->event_irq)
3091 num_responses_handled += pqi_process_event_intr(ctrl_info);
3092
3093 if (num_responses_handled)
3094 atomic_inc(&ctrl_info->num_interrupts);
3095
3096 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3097 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3098
3099 return IRQ_HANDLED;
3100}
3101
3102static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3103{
d91d7820 3104 struct pci_dev *pci_dev = ctrl_info->pci_dev;
6c223761
KB		 3105 int i;
3106 int rc;
3107
d91d7820 3108 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
6c223761
KB		 3109
3110 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
d91d7820 3111 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
52198226 3112 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
6c223761 3113 if (rc) {
d91d7820 3114 dev_err(&pci_dev->dev,
6c223761 3115 "irq %u init failed with error %d\n",
d91d7820 3116 pci_irq_vector(pci_dev, i), rc);
6c223761
KB		 3117 return rc;
3118 }
3119 ctrl_info->num_msix_vectors_initialized++;
3120 }
3121
3122 return 0;
3123}
3124
98bf061b
KB		 3125static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3126{
3127 int i;
3128
3129 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3130 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3131 &ctrl_info->queue_groups[i]);
3132
3133 ctrl_info->num_msix_vectors_initialized = 0;
3134}
3135
6c223761
KB		 3136static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3137{
98bf061b 3138 int num_vectors_enabled;
6c223761 3139
98bf061b 3140 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
52198226
CH		 3141 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3142 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
98bf061b 3143 if (num_vectors_enabled < 0) {
6c223761 3144 dev_err(&ctrl_info->pci_dev->dev,
98bf061b
KB		 3145 "MSI-X init failed with error %d\n",
3146 num_vectors_enabled);
3147 return num_vectors_enabled;
6c223761
KB		 3148 }
3149
98bf061b 3150 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
061ef06a 3151 ctrl_info->irq_mode = IRQ_MODE_MSIX;
6c223761
KB		 3152 return 0;
3153}
3154
98bf061b
KB		 3155static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3156{
3157 if (ctrl_info->num_msix_vectors_enabled) {
3158 pci_free_irq_vectors(ctrl_info->pci_dev);
3159 ctrl_info->num_msix_vectors_enabled = 0;
3160 }
3161}
3162
6c223761
KB		 3163static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3164{
3165 unsigned int i;
3166 size_t alloc_length;
3167 size_t element_array_length_per_iq;
3168 size_t element_array_length_per_oq;
3169 void *element_array;
3170 void *next_queue_index;
3171 void *aligned_pointer;
3172 unsigned int num_inbound_queues;
3173 unsigned int num_outbound_queues;
3174 unsigned int num_queue_indexes;
3175 struct pqi_queue_group *queue_group;
3176
3177 element_array_length_per_iq =
3178 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3179 ctrl_info->num_elements_per_iq;
3180 element_array_length_per_oq =
3181 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3182 ctrl_info->num_elements_per_oq;
3183 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3184 num_outbound_queues = ctrl_info->num_queue_groups;
3185 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3186
3187 aligned_pointer = NULL;
3188
3189 for (i = 0; i < num_inbound_queues; i++) {
3190 aligned_pointer = PTR_ALIGN(aligned_pointer,
3191 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3192 aligned_pointer += element_array_length_per_iq;
3193 }
3194
3195 for (i = 0; i < num_outbound_queues; i++) {
3196 aligned_pointer = PTR_ALIGN(aligned_pointer,
3197 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3198 aligned_pointer += element_array_length_per_oq;
3199 }
3200
3201 aligned_pointer = PTR_ALIGN(aligned_pointer,
3202 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3203 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3204 PQI_EVENT_OQ_ELEMENT_LENGTH;
3205
3206 for (i = 0; i < num_queue_indexes; i++) {
3207 aligned_pointer = PTR_ALIGN(aligned_pointer,
3208 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3209 aligned_pointer += sizeof(pqi_index_t);
3210 }
3211
3212 alloc_length = (size_t)aligned_pointer +
3213 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3214
e1d213bd
KB		 3215 alloc_length += PQI_EXTRA_SGL_MEMORY;
3216
6c223761
KB		 3217 ctrl_info->queue_memory_base =
3218 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3219 alloc_length,
3220 &ctrl_info->queue_memory_base_dma_handle, GFP_KERNEL);
3221
d87d5474 3222 if (!ctrl_info->queue_memory_base)
6c223761 3223 return -ENOMEM;
6c223761
KB		 3224
3225 ctrl_info->queue_memory_length = alloc_length;
3226
3227 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3228 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3229
3230 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3231 queue_group = &ctrl_info->queue_groups[i];
3232 queue_group->iq_element_array[RAID_PATH] = element_array;
3233 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3234 ctrl_info->queue_memory_base_dma_handle +
3235 (element_array - ctrl_info->queue_memory_base);
3236 element_array += element_array_length_per_iq;
3237 element_array = PTR_ALIGN(element_array,
3238 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3239 queue_group->iq_element_array[AIO_PATH] = element_array;
3240 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3241 ctrl_info->queue_memory_base_dma_handle +
3242 (element_array - ctrl_info->queue_memory_base);
3243 element_array += element_array_length_per_iq;
3244 element_array = PTR_ALIGN(element_array,
3245 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3246 }
3247
3248 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3249 queue_group = &ctrl_info->queue_groups[i];
3250 queue_group->oq_element_array = element_array;
3251 queue_group->oq_element_array_bus_addr =
3252 ctrl_info->queue_memory_base_dma_handle +
3253 (element_array - ctrl_info->queue_memory_base);
3254 element_array += element_array_length_per_oq;
3255 element_array = PTR_ALIGN(element_array,
3256 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3257 }
3258
3259 ctrl_info->event_queue.oq_element_array = element_array;
3260 ctrl_info->event_queue.oq_element_array_bus_addr =
3261 ctrl_info->queue_memory_base_dma_handle +
3262 (element_array - ctrl_info->queue_memory_base);
3263 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3264 PQI_EVENT_OQ_ELEMENT_LENGTH;
3265
3266 next_queue_index = PTR_ALIGN(element_array,
3267 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3268
3269 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3270 queue_group = &ctrl_info->queue_groups[i];
3271 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3272 queue_group->iq_ci_bus_addr[RAID_PATH] =
3273 ctrl_info->queue_memory_base_dma_handle +
3274 (next_queue_index - ctrl_info->queue_memory_base);
3275 next_queue_index += sizeof(pqi_index_t);
3276 next_queue_index = PTR_ALIGN(next_queue_index,
3277 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3278 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3279 queue_group->iq_ci_bus_addr[AIO_PATH] =
3280 ctrl_info->queue_memory_base_dma_handle +
3281 (next_queue_index - ctrl_info->queue_memory_base);
3282 next_queue_index += sizeof(pqi_index_t);
3283 next_queue_index = PTR_ALIGN(next_queue_index,
3284 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3285 queue_group->oq_pi = next_queue_index;
3286 queue_group->oq_pi_bus_addr =
3287 ctrl_info->queue_memory_base_dma_handle +
3288 (next_queue_index - ctrl_info->queue_memory_base);
3289 next_queue_index += sizeof(pqi_index_t);
3290 next_queue_index = PTR_ALIGN(next_queue_index,
3291 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3292 }
3293
3294 ctrl_info->event_queue.oq_pi = next_queue_index;
3295 ctrl_info->event_queue.oq_pi_bus_addr =
3296 ctrl_info->queue_memory_base_dma_handle +
3297 (next_queue_index - ctrl_info->queue_memory_base);
3298
3299 return 0;
3300}
3301
3302static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3303{
3304 unsigned int i;
3305 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3306 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3307
3308 /*
3309 * Initialize the backpointers to the controller structure in
3310 * each operational queue group structure.
3311 */
3312 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3313 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3314
3315 /*
3316 * Assign IDs to all operational queues. Note that the IDs
3317 * assigned to operational IQs are independent of the IDs
3318 * assigned to operational OQs.
3319 */
3320 ctrl_info->event_queue.oq_id = next_oq_id++;
3321 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3322 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3323 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3324 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3325 }
3326
3327 /*
3328 * Assign MSI-X table entry indexes to all queues. Note that the
3329 * interrupt for the event queue is shared with the first queue group.
3330 */
3331 ctrl_info->event_queue.int_msg_num = 0;
3332 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3333 ctrl_info->queue_groups[i].int_msg_num = i;
3334
3335 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3336 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3337 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3338 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3339 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3340 }
3341}
3342
3343static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3344{
3345 size_t alloc_length;
3346 struct pqi_admin_queues_aligned *admin_queues_aligned;
3347 struct pqi_admin_queues *admin_queues;
3348
3349 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3350 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3351
3352 ctrl_info->admin_queue_memory_base =
3353 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3354 alloc_length,
3355 &ctrl_info->admin_queue_memory_base_dma_handle,
3356 GFP_KERNEL);
3357
3358 if (!ctrl_info->admin_queue_memory_base)
3359 return -ENOMEM;
3360
3361 ctrl_info->admin_queue_memory_length = alloc_length;
3362
3363 admin_queues = &ctrl_info->admin_queues;
3364 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3365 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3366 admin_queues->iq_element_array =
3367 &admin_queues_aligned->iq_element_array;
3368 admin_queues->oq_element_array =
3369 &admin_queues_aligned->oq_element_array;
3370 admin_queues->iq_ci = &admin_queues_aligned->iq_ci;
3371 admin_queues->oq_pi = &admin_queues_aligned->oq_pi;
3372
3373 admin_queues->iq_element_array_bus_addr =
3374 ctrl_info->admin_queue_memory_base_dma_handle +
3375 (admin_queues->iq_element_array -
3376 ctrl_info->admin_queue_memory_base);
3377 admin_queues->oq_element_array_bus_addr =
3378 ctrl_info->admin_queue_memory_base_dma_handle +
3379 (admin_queues->oq_element_array -
3380 ctrl_info->admin_queue_memory_base);
3381 admin_queues->iq_ci_bus_addr =
3382 ctrl_info->admin_queue_memory_base_dma_handle +
3383 ((void *)admin_queues->iq_ci -
3384 ctrl_info->admin_queue_memory_base);
3385 admin_queues->oq_pi_bus_addr =
3386 ctrl_info->admin_queue_memory_base_dma_handle +
3387 ((void *)admin_queues->oq_pi -
3388 ctrl_info->admin_queue_memory_base);
3389
3390 return 0;
3391}
3392
3393#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES HZ
3394#define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3395
3396static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3397{
3398 struct pqi_device_registers __iomem *pqi_registers;
3399 struct pqi_admin_queues *admin_queues;
3400 unsigned long timeout;
3401 u8 status;
3402 u32 reg;
3403
3404 pqi_registers = ctrl_info->pqi_registers;
3405 admin_queues = &ctrl_info->admin_queues;
3406
3407 writeq((u64)admin_queues->iq_element_array_bus_addr,
3408 &pqi_registers->admin_iq_element_array_addr);
3409 writeq((u64)admin_queues->oq_element_array_bus_addr,
3410 &pqi_registers->admin_oq_element_array_addr);
3411 writeq((u64)admin_queues->iq_ci_bus_addr,
3412 &pqi_registers->admin_iq_ci_addr);
3413 writeq((u64)admin_queues->oq_pi_bus_addr,
3414 &pqi_registers->admin_oq_pi_addr);
3415
3416 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
3417 (PQI_ADMIN_OQ_NUM_ELEMENTS) << 8 |
3418 (admin_queues->int_msg_num << 16);
3419 writel(reg, &pqi_registers->admin_iq_num_elements);
3420 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3421 &pqi_registers->function_and_status_code);
3422
3423 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3424 while (1) {
3425 status = readb(&pqi_registers->function_and_status_code);
3426 if (status == PQI_STATUS_IDLE)
3427 break;
3428 if (time_after(jiffies, timeout))
3429 return -ETIMEDOUT;
3430 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
3431 }
3432
3433 /*
3434 * The offset registers are not initialized to the correct
3435 * offsets until *after* the create admin queue pair command
3436 * completes successfully.
3437 */
3438 admin_queues->iq_pi = ctrl_info->iomem_base +
3439 PQI_DEVICE_REGISTERS_OFFSET +
3440 readq(&pqi_registers->admin_iq_pi_offset);
3441 admin_queues->oq_ci = ctrl_info->iomem_base +
3442 PQI_DEVICE_REGISTERS_OFFSET +
3443 readq(&pqi_registers->admin_oq_ci_offset);
3444
3445 return 0;
3446}
3447
3448static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
3449 struct pqi_general_admin_request *request)
3450{
3451 struct pqi_admin_queues *admin_queues;
3452 void *next_element;
3453 pqi_index_t iq_pi;
3454
3455 admin_queues = &ctrl_info->admin_queues;
3456 iq_pi = admin_queues->iq_pi_copy;
3457
3458 next_element = admin_queues->iq_element_array +
3459 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
3460
3461 memcpy(next_element, request, sizeof(*request));
3462
3463 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
3464 admin_queues->iq_pi_copy = iq_pi;
3465
3466 /*
3467 * This write notifies the controller that an IU is available to be
3468 * processed.
3469 */
3470 writel(iq_pi, admin_queues->iq_pi);
3471}
3472
13bede67
KB		 3473#define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
3474
6c223761
KB		 3475static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
3476 struct pqi_general_admin_response *response)
3477{
3478 struct pqi_admin_queues *admin_queues;
3479 pqi_index_t oq_pi;
3480 pqi_index_t oq_ci;
3481 unsigned long timeout;
3482
3483 admin_queues = &ctrl_info->admin_queues;
3484 oq_ci = admin_queues->oq_ci_copy;
3485
13bede67 3486 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * HZ) + jiffies;
6c223761
KB		 3487
3488 while (1) {
3489 oq_pi = *admin_queues->oq_pi;
3490 if (oq_pi != oq_ci)
3491 break;
3492 if (time_after(jiffies, timeout)) {
3493 dev_err(&ctrl_info->pci_dev->dev,
3494 "timed out waiting for admin response\n");
3495 return -ETIMEDOUT;
3496 }
13bede67
KB		 3497 if (!sis_is_firmware_running(ctrl_info))
3498 return -ENXIO;
6c223761
KB		 3499 usleep_range(1000, 2000);
3500 }
3501
3502 memcpy(response, admin_queues->oq_element_array +
3503 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
3504
3505 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
3506 admin_queues->oq_ci_copy = oq_ci;
3507 writel(oq_ci, admin_queues->oq_ci);
3508
3509 return 0;
3510}
3511
3512static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
3513 struct pqi_queue_group *queue_group, enum pqi_io_path path,
3514 struct pqi_io_request *io_request)
3515{
3516 struct pqi_io_request *next;
3517 void *next_element;
3518 pqi_index_t iq_pi;
3519 pqi_index_t iq_ci;
3520 size_t iu_length;
3521 unsigned long flags;
3522 unsigned int num_elements_needed;
3523 unsigned int num_elements_to_end_of_queue;
3524 size_t copy_count;
3525 struct pqi_iu_header *request;
3526
3527 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
3528
376fb880
KB		 3529 if (io_request) {
3530 io_request->queue_group = queue_group;
6c223761
KB		 3531 list_add_tail(&io_request->request_list_entry,
3532 &queue_group->request_list[path]);
376fb880 3533 }
6c223761
KB		 3534
3535 iq_pi = queue_group->iq_pi_copy[path];
3536
3537 list_for_each_entry_safe(io_request, next,
3538 &queue_group->request_list[path], request_list_entry) {
3539
3540 request = io_request->iu;
3541
3542 iu_length = get_unaligned_le16(&request->iu_length) +
3543 PQI_REQUEST_HEADER_LENGTH;
3544 num_elements_needed =
3545 DIV_ROUND_UP(iu_length,
3546 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3547
3548 iq_ci = *queue_group->iq_ci[path];
3549
3550 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
3551 ctrl_info->num_elements_per_iq))
3552 break;
3553
3554 put_unaligned_le16(queue_group->oq_id,
3555 &request->response_queue_id);
3556
3557 next_element = queue_group->iq_element_array[path] +
3558 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3559
3560 num_elements_to_end_of_queue =
3561 ctrl_info->num_elements_per_iq - iq_pi;
3562
3563 if (num_elements_needed <= num_elements_to_end_of_queue) {
3564 memcpy(next_element, request, iu_length);
3565 } else {
3566 copy_count = num_elements_to_end_of_queue *
3567 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
3568 memcpy(next_element, request, copy_count);
3569 memcpy(queue_group->iq_element_array[path],
3570 (u8 *)request + copy_count,
3571 iu_length - copy_count);
3572 }
3573
3574 iq_pi = (iq_pi + num_elements_needed) %
3575 ctrl_info->num_elements_per_iq;
3576
3577 list_del(&io_request->request_list_entry);
3578 }
3579
3580 if (iq_pi != queue_group->iq_pi_copy[path]) {
3581 queue_group->iq_pi_copy[path] = iq_pi;
3582 /*
3583 * This write notifies the controller that one or more IUs are
3584 * available to be processed.
3585 */
3586 writel(iq_pi, queue_group->iq_pi[path]);
3587 }
3588
3589 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
3590}
3591
1f37e992
KB		 3592#define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
3593
3594static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
3595 struct completion *wait)
3596{
3597 int rc;
1f37e992
KB		 3598
3599 while (1) {
3600 if (wait_for_completion_io_timeout(wait,
3601 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) {
3602 rc = 0;
3603 break;
3604 }
3605
3606 pqi_check_ctrl_health(ctrl_info);
3607 if (pqi_ctrl_offline(ctrl_info)) {
3608 rc = -ENXIO;
3609 break;
3610 }
1f37e992
KB		 3611 }
3612
3613 return rc;
3614}
3615
6c223761
KB		 3616static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
3617 void *context)
3618{
3619 struct completion *waiting = context;
3620
3621 complete(waiting);
3622}
3623
3624static int pqi_submit_raid_request_synchronous_with_io_request(
3625 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
3626 unsigned long timeout_msecs)
3627{
3628 int rc = 0;
3629 DECLARE_COMPLETION_ONSTACK(wait);
3630
3631 io_request->io_complete_callback = pqi_raid_synchronous_complete;
3632 io_request->context = &wait;
3633
3634 pqi_start_io(ctrl_info,
3635 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
3636 io_request);
3637
3638 if (timeout_msecs == NO_TIMEOUT) {
1f37e992 3639 pqi_wait_for_completion_io(ctrl_info, &wait);
6c223761
KB		 3640 } else {
3641 if (!wait_for_completion_io_timeout(&wait,
3642 msecs_to_jiffies(timeout_msecs))) {
3643 dev_warn(&ctrl_info->pci_dev->dev,
3644 "command timed out\n");
3645 rc = -ETIMEDOUT;
3646 }
3647 }
3648
3649 return rc;
3650}
3651
3652static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
3653 struct pqi_iu_header *request, unsigned int flags,
3654 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
3655{
3656 int rc;
3657 struct pqi_io_request *io_request;
3658 unsigned long start_jiffies;
3659 unsigned long msecs_blocked;
3660 size_t iu_length;
3661
3662 /*
3663 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
3664 * are mutually exclusive.
3665 */
3666
3667 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
3668 if (down_interruptible(&ctrl_info->sync_request_sem))
3669 return -ERESTARTSYS;
3670 } else {
3671 if (timeout_msecs == NO_TIMEOUT) {
3672 down(&ctrl_info->sync_request_sem);
3673 } else {
3674 start_jiffies = jiffies;
3675 if (down_timeout(&ctrl_info->sync_request_sem,
3676 msecs_to_jiffies(timeout_msecs)))
3677 return -ETIMEDOUT;
3678 msecs_blocked =
3679 jiffies_to_msecs(jiffies - start_jiffies);
3680 if (msecs_blocked >= timeout_msecs)
3681 return -ETIMEDOUT;
3682 timeout_msecs -= msecs_blocked;
3683 }
3684 }
3685
7561a7e4
KB		 3686 pqi_ctrl_busy(ctrl_info);
3687 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
3688 if (timeout_msecs == 0) {
3689 rc = -ETIMEDOUT;
3690 goto out;
3691 }
3692
376fb880
KB		 3693 if (pqi_ctrl_offline(ctrl_info)) {
3694 rc = -ENXIO;
3695 goto out;
3696 }
3697
6c223761
KB		 3698 io_request = pqi_alloc_io_request(ctrl_info);
3699
3700 put_unaligned_le16(io_request->index,
3701 &(((struct pqi_raid_path_request *)request)->request_id));
3702
3703 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
3704 ((struct pqi_raid_path_request *)request)->error_index =
3705 ((struct pqi_raid_path_request *)request)->request_id;
3706
3707 iu_length = get_unaligned_le16(&request->iu_length) +
3708 PQI_REQUEST_HEADER_LENGTH;
3709 memcpy(io_request->iu, request, iu_length);
3710
3711 rc = pqi_submit_raid_request_synchronous_with_io_request(ctrl_info,
3712 io_request, timeout_msecs);
3713
3714 if (error_info) {
3715 if (io_request->error_info)
3716 memcpy(error_info, io_request->error_info,
3717 sizeof(*error_info));
3718 else
3719 memset(error_info, 0, sizeof(*error_info));
3720 } else if (rc == 0 && io_request->error_info) {
3721 u8 scsi_status;
3722 struct pqi_raid_error_info *raid_error_info;
3723
3724 raid_error_info = io_request->error_info;
3725 scsi_status = raid_error_info->status;
3726
3727 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
3728 raid_error_info->data_out_result ==
3729 PQI_DATA_IN_OUT_UNDERFLOW)
3730 scsi_status = SAM_STAT_GOOD;
3731
3732 if (scsi_status != SAM_STAT_GOOD)
3733 rc = -EIO;
3734 }
3735
3736 pqi_free_io_request(io_request);
3737
7561a7e4
KB		 3738out:
3739 pqi_ctrl_unbusy(ctrl_info);
6c223761
KB		 3740 up(&ctrl_info->sync_request_sem);
3741
3742 return rc;
3743}
3744
3745static int pqi_validate_admin_response(
3746 struct pqi_general_admin_response *response, u8 expected_function_code)
3747{
3748 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
3749 return -EINVAL;
3750
3751 if (get_unaligned_le16(&response->header.iu_length) !=
3752 PQI_GENERAL_ADMIN_IU_LENGTH)
3753 return -EINVAL;
3754
3755 if (response->function_code != expected_function_code)
3756 return -EINVAL;
3757
3758 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
3759 return -EINVAL;
3760
3761 return 0;
3762}
3763
3764static int pqi_submit_admin_request_synchronous(
3765 struct pqi_ctrl_info *ctrl_info,
3766 struct pqi_general_admin_request *request,
3767 struct pqi_general_admin_response *response)
3768{
3769 int rc;
3770
3771 pqi_submit_admin_request(ctrl_info, request);
3772
3773 rc = pqi_poll_for_admin_response(ctrl_info, response);
3774
3775 if (rc == 0)
3776 rc = pqi_validate_admin_response(response,
3777 request->function_code);
3778
3779 return rc;
3780}
3781
3782static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
3783{
3784 int rc;
3785 struct pqi_general_admin_request request;
3786 struct pqi_general_admin_response response;
3787 struct pqi_device_capability *capability;
3788 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
3789
3790 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
3791 if (!capability)
3792 return -ENOMEM;
3793
3794 memset(&request, 0, sizeof(request));
3795
3796 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3797 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3798 &request.header.iu_length);
3799 request.function_code =
3800 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
3801 put_unaligned_le32(sizeof(*capability),
3802 &request.data.report_device_capability.buffer_length);
3803
3804 rc = pqi_map_single(ctrl_info->pci_dev,
3805 &request.data.report_device_capability.sg_descriptor,
3806 capability, sizeof(*capability),
3807 PCI_DMA_FROMDEVICE);
3808 if (rc)
3809 goto out;
3810
3811 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3812 &response);
3813
3814 pqi_pci_unmap(ctrl_info->pci_dev,
3815 &request.data.report_device_capability.sg_descriptor, 1,
3816 PCI_DMA_FROMDEVICE);
3817
3818 if (rc)
3819 goto out;
3820
3821 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
3822 rc = -EIO;
3823 goto out;
3824 }
3825
3826 ctrl_info->max_inbound_queues =
3827 get_unaligned_le16(&capability->max_inbound_queues);
3828 ctrl_info->max_elements_per_iq =
3829 get_unaligned_le16(&capability->max_elements_per_iq);
3830 ctrl_info->max_iq_element_length =
3831 get_unaligned_le16(&capability->max_iq_element_length)
3832 * 16;
3833 ctrl_info->max_outbound_queues =
3834 get_unaligned_le16(&capability->max_outbound_queues);
3835 ctrl_info->max_elements_per_oq =
3836 get_unaligned_le16(&capability->max_elements_per_oq);
3837 ctrl_info->max_oq_element_length =
3838 get_unaligned_le16(&capability->max_oq_element_length)
3839 * 16;
3840
3841 sop_iu_layer_descriptor =
3842 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
3843
3844 ctrl_info->max_inbound_iu_length_per_firmware =
3845 get_unaligned_le16(
3846 &sop_iu_layer_descriptor->max_inbound_iu_length);
3847 ctrl_info->inbound_spanning_supported =
3848 sop_iu_layer_descriptor->inbound_spanning_supported;
3849 ctrl_info->outbound_spanning_supported =
3850 sop_iu_layer_descriptor->outbound_spanning_supported;
3851
3852out:
3853 kfree(capability);
3854
3855 return rc;
3856}
3857
3858static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
3859{
3860 if (ctrl_info->max_iq_element_length <
3861 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
3862 dev_err(&ctrl_info->pci_dev->dev,
3863 "max. inbound queue element length of %d is less than the required length of %d\n",
3864 ctrl_info->max_iq_element_length,
3865 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3866 return -EINVAL;
3867 }
3868
3869 if (ctrl_info->max_oq_element_length <
3870 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
3871 dev_err(&ctrl_info->pci_dev->dev,
3872 "max. outbound queue element length of %d is less than the required length of %d\n",
3873 ctrl_info->max_oq_element_length,
3874 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
3875 return -EINVAL;
3876 }
3877
3878 if (ctrl_info->max_inbound_iu_length_per_firmware <
3879 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
3880 dev_err(&ctrl_info->pci_dev->dev,
3881 "max. inbound IU length of %u is less than the min. required length of %d\n",
3882 ctrl_info->max_inbound_iu_length_per_firmware,
3883 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3884 return -EINVAL;
3885 }
3886
77668f41
KB		 3887 if (!ctrl_info->inbound_spanning_supported) {
3888 dev_err(&ctrl_info->pci_dev->dev,
3889 "the controller does not support inbound spanning\n");
3890 return -EINVAL;
3891 }
3892
3893 if (ctrl_info->outbound_spanning_supported) {
3894 dev_err(&ctrl_info->pci_dev->dev,
3895 "the controller supports outbound spanning but this driver does not\n");
3896 return -EINVAL;
3897 }
3898
6c223761
KB		 3899 return 0;
3900}
3901
3902static int pqi_delete_operational_queue(struct pqi_ctrl_info *ctrl_info,
3903 bool inbound_queue, u16 queue_id)
3904{
3905 struct pqi_general_admin_request request;
3906 struct pqi_general_admin_response response;
3907
3908 memset(&request, 0, sizeof(request));
3909 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3910 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3911 &request.header.iu_length);
3912 if (inbound_queue)
3913 request.function_code =
3914 PQI_GENERAL_ADMIN_FUNCTION_DELETE_IQ;
3915 else
3916 request.function_code =
3917 PQI_GENERAL_ADMIN_FUNCTION_DELETE_OQ;
3918 put_unaligned_le16(queue_id,
3919 &request.data.delete_operational_queue.queue_id);
3920
3921 return pqi_submit_admin_request_synchronous(ctrl_info, &request,
3922 &response);
3923}
3924
3925static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
3926{
3927 int rc;
3928 struct pqi_event_queue *event_queue;
3929 struct pqi_general_admin_request request;
3930 struct pqi_general_admin_response response;
3931
3932 event_queue = &ctrl_info->event_queue;
3933
3934 /*
3935 * Create OQ (Outbound Queue - device to host queue) to dedicate
3936 * to events.
3937 */
3938 memset(&request, 0, sizeof(request));
3939 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3940 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3941 &request.header.iu_length);
3942 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
3943 put_unaligned_le16(event_queue->oq_id,
3944 &request.data.create_operational_oq.queue_id);
3945 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
3946 &request.data.create_operational_oq.element_array_addr);
3947 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
3948 &request.data.create_operational_oq.pi_addr);
3949 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
3950 &request.data.create_operational_oq.num_elements);
3951 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
3952 &request.data.create_operational_oq.element_length);
3953 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
3954 put_unaligned_le16(event_queue->int_msg_num,
3955 &request.data.create_operational_oq.int_msg_num);
3956
3957 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3958 &response);
3959 if (rc)
3960 return rc;
3961
3962 event_queue->oq_ci = ctrl_info->iomem_base +
3963 PQI_DEVICE_REGISTERS_OFFSET +
3964 get_unaligned_le64(
3965 &response.data.create_operational_oq.oq_ci_offset);
3966
3967 return 0;
3968}
3969
061ef06a
KB		 3970static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
3971 unsigned int group_number)
6c223761 3972{
6c223761
KB		 3973 int rc;
3974 struct pqi_queue_group *queue_group;
3975 struct pqi_general_admin_request request;
3976 struct pqi_general_admin_response response;
3977
061ef06a 3978 queue_group = &ctrl_info->queue_groups[group_number];
6c223761
KB		 3979
3980 /*
3981 * Create IQ (Inbound Queue - host to device queue) for
3982 * RAID path.
3983 */
3984 memset(&request, 0, sizeof(request));
3985 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3986 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3987 &request.header.iu_length);
3988 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
3989 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
3990 &request.data.create_operational_iq.queue_id);
3991 put_unaligned_le64(
3992 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
3993 &request.data.create_operational_iq.element_array_addr);
3994 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
3995 &request.data.create_operational_iq.ci_addr);
3996 put_unaligned_le16(ctrl_info->num_elements_per_iq,
3997 &request.data.create_operational_iq.num_elements);
3998 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
3999 &request.data.create_operational_iq.element_length);
4000 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4001
4002 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4003 &response);
4004 if (rc) {
4005 dev_err(&ctrl_info->pci_dev->dev,
4006 "error creating inbound RAID queue\n");
4007 return rc;
4008 }
4009
4010 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
4011 PQI_DEVICE_REGISTERS_OFFSET +
4012 get_unaligned_le64(
4013 &response.data.create_operational_iq.iq_pi_offset);
4014
4015 /*
4016 * Create IQ (Inbound Queue - host to device queue) for
4017 * Advanced I/O (AIO) path.
4018 */
4019 memset(&request, 0, sizeof(request));
4020 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4021 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4022 &request.header.iu_length);
4023 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4024 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4025 &request.data.create_operational_iq.queue_id);
4026 put_unaligned_le64((u64)queue_group->
4027 iq_element_array_bus_addr[AIO_PATH],
4028 &request.data.create_operational_iq.element_array_addr);
4029 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4030 &request.data.create_operational_iq.ci_addr);
4031 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4032 &request.data.create_operational_iq.num_elements);
4033 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4034 &request.data.create_operational_iq.element_length);
4035 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4036
4037 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4038 &response);
4039 if (rc) {
4040 dev_err(&ctrl_info->pci_dev->dev,
4041 "error creating inbound AIO queue\n");
4042 goto delete_inbound_queue_raid;
4043 }
4044
4045 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4046 PQI_DEVICE_REGISTERS_OFFSET +
4047 get_unaligned_le64(
4048 &response.data.create_operational_iq.iq_pi_offset);
4049
4050 /*
4051 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4052 * assumed to be for RAID path I/O unless we change the queue's
4053 * property.
4054 */
4055 memset(&request, 0, sizeof(request));
4056 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4057 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4058 &request.header.iu_length);
4059 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4060 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4061 &request.data.change_operational_iq_properties.queue_id);
4062 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4063 &request.data.change_operational_iq_properties.vendor_specific);
4064
4065 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4066 &response);
4067 if (rc) {
4068 dev_err(&ctrl_info->pci_dev->dev,
4069 "error changing queue property\n");
4070 goto delete_inbound_queue_aio;
4071 }
4072
4073 /*
4074 * Create OQ (Outbound Queue - device to host queue).
4075 */
4076 memset(&request, 0, sizeof(request));
4077 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4078 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4079 &request.header.iu_length);
4080 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4081 put_unaligned_le16(queue_group->oq_id,
4082 &request.data.create_operational_oq.queue_id);
4083 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4084 &request.data.create_operational_oq.element_array_addr);
4085 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4086 &request.data.create_operational_oq.pi_addr);
4087 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4088 &request.data.create_operational_oq.num_elements);
4089 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4090 &request.data.create_operational_oq.element_length);
4091 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4092 put_unaligned_le16(queue_group->int_msg_num,
4093 &request.data.create_operational_oq.int_msg_num);
4094
4095 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4096 &response);
4097 if (rc) {
4098 dev_err(&ctrl_info->pci_dev->dev,
4099 "error creating outbound queue\n");
4100 goto delete_inbound_queue_aio;
4101 }
4102
4103 queue_group->oq_ci = ctrl_info->iomem_base +
4104 PQI_DEVICE_REGISTERS_OFFSET +
4105 get_unaligned_le64(
4106 &response.data.create_operational_oq.oq_ci_offset);
4107
6c223761
KB		 4108 return 0;
4109
4110delete_inbound_queue_aio:
4111 pqi_delete_operational_queue(ctrl_info, true,
4112 queue_group->iq_id[AIO_PATH]);
4113
4114delete_inbound_queue_raid:
4115 pqi_delete_operational_queue(ctrl_info, true,
4116 queue_group->iq_id[RAID_PATH]);
4117
4118 return rc;
4119}
4120
4121static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4122{
4123 int rc;
4124 unsigned int i;
4125
4126 rc = pqi_create_event_queue(ctrl_info);
4127 if (rc) {
4128 dev_err(&ctrl_info->pci_dev->dev,
4129 "error creating event queue\n");
4130 return rc;
4131 }
4132
4133 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
061ef06a 4134 rc = pqi_create_queue_group(ctrl_info, i);
6c223761
KB		 4135 if (rc) {
4136 dev_err(&ctrl_info->pci_dev->dev,
4137 "error creating queue group number %u/%u\n",
4138 i, ctrl_info->num_queue_groups);
4139 return rc;
4140 }
4141 }
4142
4143 return 0;
4144}
4145
4146#define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4147 (offsetof(struct pqi_event_config, descriptors) + \
4148 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4149
6a50d6ad
KB		 4150static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4151 bool enable_events)
6c223761
KB		 4152{
4153 int rc;
4154 unsigned int i;
4155 struct pqi_event_config *event_config;
6a50d6ad 4156 struct pqi_event_descriptor *event_descriptor;
6c223761
KB		 4157 struct pqi_general_management_request request;
4158
4159 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4160 GFP_KERNEL);
4161 if (!event_config)
4162 return -ENOMEM;
4163
4164 memset(&request, 0, sizeof(request));
4165
4166 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4167 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4168 data.report_event_configuration.sg_descriptors[1]) -
4169 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4170 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4171 &request.data.report_event_configuration.buffer_length);
4172
4173 rc = pqi_map_single(ctrl_info->pci_dev,
4174 request.data.report_event_configuration.sg_descriptors,
4175 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4176 PCI_DMA_FROMDEVICE);
4177 if (rc)
4178 goto out;
4179
4180 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4181 0, NULL, NO_TIMEOUT);
4182
4183 pqi_pci_unmap(ctrl_info->pci_dev,
4184 request.data.report_event_configuration.sg_descriptors, 1,
4185 PCI_DMA_FROMDEVICE);
4186
4187 if (rc)
4188 goto out;
4189
6a50d6ad
KB		 4190 for (i = 0; i < event_config->num_event_descriptors; i++) {
4191 event_descriptor = &event_config->descriptors[i];
4192 if (enable_events &&
4193 pqi_is_supported_event(event_descriptor->event_type))
4194 put_unaligned_le16(ctrl_info->event_queue.oq_id,
4195 &event_descriptor->oq_id);
4196 else
4197 put_unaligned_le16(0, &event_descriptor->oq_id);
4198 }
6c223761
KB		 4199
4200 memset(&request, 0, sizeof(request));
4201
4202 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4203 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4204 data.report_event_configuration.sg_descriptors[1]) -
4205 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4206 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4207 &request.data.report_event_configuration.buffer_length);
4208
4209 rc = pqi_map_single(ctrl_info->pci_dev,
4210 request.data.report_event_configuration.sg_descriptors,
4211 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4212 PCI_DMA_TODEVICE);
4213 if (rc)
4214 goto out;
4215
4216 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4217 NULL, NO_TIMEOUT);
4218
4219 pqi_pci_unmap(ctrl_info->pci_dev,
4220 request.data.report_event_configuration.sg_descriptors, 1,
4221 PCI_DMA_TODEVICE);
4222
4223out:
4224 kfree(event_config);
4225
4226 return rc;
4227}
4228
6a50d6ad
KB		 4229static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4230{
4231 return pqi_configure_events(ctrl_info, true);
4232}
4233
4234static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4235{
4236 return pqi_configure_events(ctrl_info, false);
4237}
4238
6c223761
KB		 4239static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4240{
4241 unsigned int i;
4242 struct device *dev;
4243 size_t sg_chain_buffer_length;
4244 struct pqi_io_request *io_request;
4245
4246 if (!ctrl_info->io_request_pool)
4247 return;
4248
4249 dev = &ctrl_info->pci_dev->dev;
4250 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4251 io_request = ctrl_info->io_request_pool;
4252
4253 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4254 kfree(io_request->iu);
4255 if (!io_request->sg_chain_buffer)
4256 break;
4257 dma_free_coherent(dev, sg_chain_buffer_length,
4258 io_request->sg_chain_buffer,
4259 io_request->sg_chain_buffer_dma_handle);
4260 io_request++;
4261 }
4262
4263 kfree(ctrl_info->io_request_pool);
4264 ctrl_info->io_request_pool = NULL;
4265}
4266
4267static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4268{
4269 ctrl_info->error_buffer = dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
4270 ctrl_info->error_buffer_length,
4271 &ctrl_info->error_buffer_dma_handle, GFP_KERNEL);
4272
4273 if (!ctrl_info->error_buffer)
4274 return -ENOMEM;
4275
4276 return 0;
4277}
4278
4279static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4280{
4281 unsigned int i;
4282 void *sg_chain_buffer;
4283 size_t sg_chain_buffer_length;
4284 dma_addr_t sg_chain_buffer_dma_handle;
4285 struct device *dev;
4286 struct pqi_io_request *io_request;
4287
4288 ctrl_info->io_request_pool = kzalloc(ctrl_info->max_io_slots *
4289 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
4290
4291 if (!ctrl_info->io_request_pool) {
4292 dev_err(&ctrl_info->pci_dev->dev,
4293 "failed to allocate I/O request pool\n");
4294 goto error;
4295 }
4296
4297 dev = &ctrl_info->pci_dev->dev;
4298 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4299 io_request = ctrl_info->io_request_pool;
4300
4301 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4302 io_request->iu =
4303 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
4304
4305 if (!io_request->iu) {
4306 dev_err(&ctrl_info->pci_dev->dev,
4307 "failed to allocate IU buffers\n");
4308 goto error;
4309 }
4310
4311 sg_chain_buffer = dma_alloc_coherent(dev,
4312 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4313 GFP_KERNEL);
4314
4315 if (!sg_chain_buffer) {
4316 dev_err(&ctrl_info->pci_dev->dev,
4317 "failed to allocate PQI scatter-gather chain buffers\n");
4318 goto error;
4319 }
4320
4321 io_request->index = i;
4322 io_request->sg_chain_buffer = sg_chain_buffer;
4323 io_request->sg_chain_buffer_dma_handle =
4324 sg_chain_buffer_dma_handle;
4325 io_request++;
4326 }
4327
4328 return 0;
4329
4330error:
4331 pqi_free_all_io_requests(ctrl_info);
4332
4333 return -ENOMEM;
4334}
4335
4336/*
4337 * Calculate required resources that are sized based on max. outstanding
4338 * requests and max. transfer size.
4339 */
4340
4341static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4342{
4343 u32 max_transfer_size;
4344 u32 max_sg_entries;
4345
4346 ctrl_info->scsi_ml_can_queue =
4347 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4348 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4349
4350 ctrl_info->error_buffer_length =
4351 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4352
d727a776
KB		 4353 if (reset_devices)
4354 max_transfer_size = min(ctrl_info->max_transfer_size,
4355 PQI_MAX_TRANSFER_SIZE_KDUMP);
4356 else
4357 max_transfer_size = min(ctrl_info->max_transfer_size,
4358 PQI_MAX_TRANSFER_SIZE);
6c223761
KB		 4359
4360 max_sg_entries = max_transfer_size / PAGE_SIZE;
4361
4362 /* +1 to cover when the buffer is not page-aligned. */
4363 max_sg_entries++;
4364
4365 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4366
4367 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4368
4369 ctrl_info->sg_chain_buffer_length =
e1d213bd
KB		 4370 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4371 PQI_EXTRA_SGL_MEMORY;
6c223761
KB		 4372 ctrl_info->sg_tablesize = max_sg_entries;
4373 ctrl_info->max_sectors = max_transfer_size / 512;
4374}
4375
4376static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4377{
6c223761
KB		 4378 int num_queue_groups;
4379 u16 num_elements_per_iq;
4380 u16 num_elements_per_oq;
4381
d727a776
KB		 4382 if (reset_devices) {
4383 num_queue_groups = 1;
4384 } else {
4385 int num_cpus;
4386 int max_queue_groups;
4387
4388 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4389 ctrl_info->max_outbound_queues - 1);
4390 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
6c223761 4391
d727a776
KB		 4392 num_cpus = num_online_cpus();
4393 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4394 num_queue_groups = min(num_queue_groups, max_queue_groups);
4395 }
6c223761
KB		 4396
4397 ctrl_info->num_queue_groups = num_queue_groups;
061ef06a 4398 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
6c223761 4399
77668f41
KB		 4400 /*
4401 * Make sure that the max. inbound IU length is an even multiple
4402 * of our inbound element length.
4403 */
4404 ctrl_info->max_inbound_iu_length =
4405 (ctrl_info->max_inbound_iu_length_per_firmware /
4406 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4407 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
6c223761
KB		 4408
4409 num_elements_per_iq =
4410 (ctrl_info->max_inbound_iu_length /
4411 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4412
4413 /* Add one because one element in each queue is unusable. */
4414 num_elements_per_iq++;
4415
4416 num_elements_per_iq = min(num_elements_per_iq,
4417 ctrl_info->max_elements_per_iq);
4418
4419 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4420 num_elements_per_oq = min(num_elements_per_oq,
4421 ctrl_info->max_elements_per_oq);
4422
4423 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4424 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4425
4426 ctrl_info->max_sg_per_iu =
4427 ((ctrl_info->max_inbound_iu_length -
4428 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4429 sizeof(struct pqi_sg_descriptor)) +
4430 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
4431}
4432
4433static inline void pqi_set_sg_descriptor(
4434 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg)
4435{
4436 u64 address = (u64)sg_dma_address(sg);
4437 unsigned int length = sg_dma_len(sg);
4438
4439 put_unaligned_le64(address, &sg_descriptor->address);
4440 put_unaligned_le32(length, &sg_descriptor->length);
4441 put_unaligned_le32(0, &sg_descriptor->flags);
4442}
4443
4444static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
4445 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
4446 struct pqi_io_request *io_request)
4447{
4448 int i;
4449 u16 iu_length;
4450 int sg_count;
4451 bool chained;
4452 unsigned int num_sg_in_iu;
4453 unsigned int max_sg_per_iu;
4454 struct scatterlist *sg;
4455 struct pqi_sg_descriptor *sg_descriptor;
4456
4457 sg_count = scsi_dma_map(scmd);
4458 if (sg_count < 0)
4459 return sg_count;
4460
4461 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
4462 PQI_REQUEST_HEADER_LENGTH;
4463
4464 if (sg_count == 0)
4465 goto out;
4466
4467 sg = scsi_sglist(scmd);
4468 sg_descriptor = request->sg_descriptors;
4469 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4470 chained = false;
4471 num_sg_in_iu = 0;
4472 i = 0;
4473
4474 while (1) {
4475 pqi_set_sg_descriptor(sg_descriptor, sg);
4476 if (!chained)
4477 num_sg_in_iu++;
4478 i++;
4479 if (i == sg_count)
4480 break;
4481 sg_descriptor++;
4482 if (i == max_sg_per_iu) {
4483 put_unaligned_le64(
4484 (u64)io_request->sg_chain_buffer_dma_handle,
4485 &sg_descriptor->address);
4486 put_unaligned_le32((sg_count - num_sg_in_iu)
4487 * sizeof(*sg_descriptor),
4488 &sg_descriptor->length);
4489 put_unaligned_le32(CISS_SG_CHAIN,
4490 &sg_descriptor->flags);
4491 chained = true;
4492 num_sg_in_iu++;
4493 sg_descriptor = io_request->sg_chain_buffer;
4494 }
4495 sg = sg_next(sg);
4496 }
4497
4498 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4499 request->partial = chained;
4500 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4501
4502out:
4503 put_unaligned_le16(iu_length, &request->header.iu_length);
4504
4505 return 0;
4506}
4507
4508static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
4509 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
4510 struct pqi_io_request *io_request)
4511{
4512 int i;
4513 u16 iu_length;
4514 int sg_count;
a60eec02
KB		 4515 bool chained;
4516 unsigned int num_sg_in_iu;
4517 unsigned int max_sg_per_iu;
6c223761
KB		 4518 struct scatterlist *sg;
4519 struct pqi_sg_descriptor *sg_descriptor;
4520
4521 sg_count = scsi_dma_map(scmd);
4522 if (sg_count < 0)
4523 return sg_count;
a60eec02
KB		 4524
4525 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
4526 PQI_REQUEST_HEADER_LENGTH;
4527 num_sg_in_iu = 0;
4528
6c223761
KB		 4529 if (sg_count == 0)
4530 goto out;
4531
a60eec02
KB		 4532 sg = scsi_sglist(scmd);
4533 sg_descriptor = request->sg_descriptors;
4534 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4535 chained = false;
4536 i = 0;
4537
4538 while (1) {
4539 pqi_set_sg_descriptor(sg_descriptor, sg);
4540 if (!chained)
4541 num_sg_in_iu++;
4542 i++;
4543 if (i == sg_count)
4544 break;
4545 sg_descriptor++;
4546 if (i == max_sg_per_iu) {
4547 put_unaligned_le64(
4548 (u64)io_request->sg_chain_buffer_dma_handle,
4549 &sg_descriptor->address);
4550 put_unaligned_le32((sg_count - num_sg_in_iu)
4551 * sizeof(*sg_descriptor),
4552 &sg_descriptor->length);
4553 put_unaligned_le32(CISS_SG_CHAIN,
4554 &sg_descriptor->flags);
4555 chained = true;
4556 num_sg_in_iu++;
4557 sg_descriptor = io_request->sg_chain_buffer;
6c223761 4558 }
a60eec02 4559 sg = sg_next(sg);
6c223761
KB		 4560 }
4561
a60eec02
KB		 4562 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4563 request->partial = chained;
6c223761 4564 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
a60eec02
KB		 4565
4566out:
6c223761
KB		 4567 put_unaligned_le16(iu_length, &request->header.iu_length);
4568 request->num_sg_descriptors = num_sg_in_iu;
4569
4570 return 0;
4571}
4572
4573static void pqi_raid_io_complete(struct pqi_io_request *io_request,
4574 void *context)
4575{
4576 struct scsi_cmnd *scmd;
4577
4578 scmd = io_request->scmd;
4579 pqi_free_io_request(io_request);
4580 scsi_dma_unmap(scmd);
4581 pqi_scsi_done(scmd);
4582}
4583
376fb880
KB		 4584static int pqi_raid_submit_scsi_cmd_with_io_request(
4585 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
6c223761
KB		 4586 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4587 struct pqi_queue_group *queue_group)
4588{
4589 int rc;
4590 size_t cdb_length;
6c223761
KB		 4591 struct pqi_raid_path_request *request;
4592
6c223761
KB		 4593 io_request->io_complete_callback = pqi_raid_io_complete;
4594 io_request->scmd = scmd;
4595
6c223761
KB		 4596 request = io_request->iu;
4597 memset(request, 0,
4598 offsetof(struct pqi_raid_path_request, sg_descriptors));
4599
4600 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
4601 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4602 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4603 put_unaligned_le16(io_request->index, &request->request_id);
4604 request->error_index = request->request_id;
4605 memcpy(request->lun_number, device->scsi3addr,
4606 sizeof(request->lun_number));
4607
4608 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
4609 memcpy(request->cdb, scmd->cmnd, cdb_length);
4610
4611 switch (cdb_length) {
4612 case 6:
4613 case 10:
4614 case 12:
4615 case 16:
4616 /* No bytes in the Additional CDB bytes field */
4617 request->additional_cdb_bytes_usage =
4618 SOP_ADDITIONAL_CDB_BYTES_0;
4619 break;
4620 case 20:
4621 /* 4 bytes in the Additional cdb field */
4622 request->additional_cdb_bytes_usage =
4623 SOP_ADDITIONAL_CDB_BYTES_4;
4624 break;
4625 case 24:
4626 /* 8 bytes in the Additional cdb field */
4627 request->additional_cdb_bytes_usage =
4628 SOP_ADDITIONAL_CDB_BYTES_8;
4629 break;
4630 case 28:
4631 /* 12 bytes in the Additional cdb field */
4632 request->additional_cdb_bytes_usage =
4633 SOP_ADDITIONAL_CDB_BYTES_12;
4634 break;
4635 case 32:
4636 default:
4637 /* 16 bytes in the Additional cdb field */
4638 request->additional_cdb_bytes_usage =
4639 SOP_ADDITIONAL_CDB_BYTES_16;
4640 break;
4641 }
4642
4643 switch (scmd->sc_data_direction) {
4644 case DMA_TO_DEVICE:
4645 request->data_direction = SOP_READ_FLAG;
4646 break;
4647 case DMA_FROM_DEVICE:
4648 request->data_direction = SOP_WRITE_FLAG;
4649 break;
4650 case DMA_NONE:
4651 request->data_direction = SOP_NO_DIRECTION_FLAG;
4652 break;
4653 case DMA_BIDIRECTIONAL:
4654 request->data_direction = SOP_BIDIRECTIONAL;
4655 break;
4656 default:
4657 dev_err(&ctrl_info->pci_dev->dev,
4658 "unknown data direction: %d\n",
4659 scmd->sc_data_direction);
6c223761
KB		 4660 break;
4661 }
4662
4663 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
4664 if (rc) {
4665 pqi_free_io_request(io_request);
4666 return SCSI_MLQUEUE_HOST_BUSY;
4667 }
4668
4669 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
4670
4671 return 0;
4672}
4673
376fb880
KB		 4674static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
4675 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4676 struct pqi_queue_group *queue_group)
4677{
4678 struct pqi_io_request *io_request;
4679
4680 io_request = pqi_alloc_io_request(ctrl_info);
4681
4682 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
4683 device, scmd, queue_group);
4684}
4685
4686static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
4687{
4688 if (!pqi_ctrl_blocked(ctrl_info))
4689 schedule_work(&ctrl_info->raid_bypass_retry_work);
4690}
4691
4692static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
4693{
4694 struct scsi_cmnd *scmd;
03b288cf 4695 struct pqi_scsi_dev *device;
376fb880
KB		 4696 struct pqi_ctrl_info *ctrl_info;
4697
4698 if (!io_request->raid_bypass)
4699 return false;
4700
4701 scmd = io_request->scmd;
4702 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
4703 return false;
4704 if (host_byte(scmd->result) == DID_NO_CONNECT)
4705 return false;
4706
03b288cf
KB		 4707 device = scmd->device->hostdata;
4708 if (pqi_device_offline(device))
4709 return false;
4710
376fb880
KB		 4711 ctrl_info = shost_to_hba(scmd->device->host);
4712 if (pqi_ctrl_offline(ctrl_info))
4713 return false;
4714
4715 return true;
4716}
4717
4718static inline void pqi_add_to_raid_bypass_retry_list(
4719 struct pqi_ctrl_info *ctrl_info,
4720 struct pqi_io_request *io_request, bool at_head)
4721{
4722 unsigned long flags;
4723
4724 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4725 if (at_head)
4726 list_add(&io_request->request_list_entry,
4727 &ctrl_info->raid_bypass_retry_list);
4728 else
4729 list_add_tail(&io_request->request_list_entry,
4730 &ctrl_info->raid_bypass_retry_list);
4731 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4732}
4733
4734static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
4735 void *context)
4736{
4737 struct scsi_cmnd *scmd;
4738
4739 scmd = io_request->scmd;
4740 pqi_free_io_request(io_request);
4741 pqi_scsi_done(scmd);
4742}
4743
4744static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
4745{
4746 struct scsi_cmnd *scmd;
4747 struct pqi_ctrl_info *ctrl_info;
4748
4749 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
4750 scmd = io_request->scmd;
4751 scmd->result = 0;
4752 ctrl_info = shost_to_hba(scmd->device->host);
4753
4754 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
4755 pqi_schedule_bypass_retry(ctrl_info);
4756}
4757
4758static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
4759{
4760 struct scsi_cmnd *scmd;
4761 struct pqi_scsi_dev *device;
4762 struct pqi_ctrl_info *ctrl_info;
4763 struct pqi_queue_group *queue_group;
4764
4765 scmd = io_request->scmd;
4766 device = scmd->device->hostdata;
4767 if (pqi_device_in_reset(device)) {
4768 pqi_free_io_request(io_request);
4769 set_host_byte(scmd, DID_RESET);
4770 pqi_scsi_done(scmd);
4771 return 0;
4772 }
4773
4774 ctrl_info = shost_to_hba(scmd->device->host);
4775 queue_group = io_request->queue_group;
4776
4777 pqi_reinit_io_request(io_request);
4778
4779 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
4780 device, scmd, queue_group);
4781}
4782
4783static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
4784 struct pqi_ctrl_info *ctrl_info)
4785{
4786 unsigned long flags;
4787 struct pqi_io_request *io_request;
4788
4789 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4790 io_request = list_first_entry_or_null(
4791 &ctrl_info->raid_bypass_retry_list,
4792 struct pqi_io_request, request_list_entry);
4793 if (io_request)
4794 list_del(&io_request->request_list_entry);
4795 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4796
4797 return io_request;
4798}
4799
4800static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
4801{
4802 int rc;
4803 struct pqi_io_request *io_request;
4804
4805 pqi_ctrl_busy(ctrl_info);
4806
4807 while (1) {
4808 if (pqi_ctrl_blocked(ctrl_info))
4809 break;
4810 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
4811 if (!io_request)
4812 break;
4813 rc = pqi_retry_raid_bypass(io_request);
4814 if (rc) {
4815 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
4816 true);
4817 pqi_schedule_bypass_retry(ctrl_info);
4818 break;
4819 }
4820 }
4821
4822 pqi_ctrl_unbusy(ctrl_info);
4823}
4824
4825static void pqi_raid_bypass_retry_worker(struct work_struct *work)
4826{
4827 struct pqi_ctrl_info *ctrl_info;
4828
4829 ctrl_info = container_of(work, struct pqi_ctrl_info,
4830 raid_bypass_retry_work);
4831 pqi_retry_raid_bypass_requests(ctrl_info);
4832}
4833
5f310425
KB		 4834static void pqi_clear_all_queued_raid_bypass_retries(
4835 struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 4836{
4837 unsigned long flags;
376fb880
KB		 4838
4839 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5f310425 4840 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
376fb880
KB		 4841 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4842}
4843
6c223761
KB		 4844static void pqi_aio_io_complete(struct pqi_io_request *io_request,
4845 void *context)
4846{
4847 struct scsi_cmnd *scmd;
4848
4849 scmd = io_request->scmd;
4850 scsi_dma_unmap(scmd);
4851 if (io_request->status == -EAGAIN)
4852 set_host_byte(scmd, DID_IMM_RETRY);
376fb880
KB		 4853 else if (pqi_raid_bypass_retry_needed(io_request)) {
4854 pqi_queue_raid_bypass_retry(io_request);
4855 return;
4856 }
6c223761
KB		 4857 pqi_free_io_request(io_request);
4858 pqi_scsi_done(scmd);
4859}
4860
4861static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
4862 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4863 struct pqi_queue_group *queue_group)
4864{
4865 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
376fb880 4866 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
6c223761
KB		 4867}
4868
4869static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
4870 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
4871 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 4872 struct pqi_encryption_info *encryption_info, bool raid_bypass)
6c223761
KB		 4873{
4874 int rc;
4875 struct pqi_io_request *io_request;
4876 struct pqi_aio_path_request *request;
4877
4878 io_request = pqi_alloc_io_request(ctrl_info);
4879 io_request->io_complete_callback = pqi_aio_io_complete;
4880 io_request->scmd = scmd;
376fb880 4881 io_request->raid_bypass = raid_bypass;
6c223761
KB		 4882
4883 request = io_request->iu;
4884 memset(request, 0,
4885 offsetof(struct pqi_raid_path_request, sg_descriptors));
4886
4887 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
4888 put_unaligned_le32(aio_handle, &request->nexus_id);
4889 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4890 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4891 put_unaligned_le16(io_request->index, &request->request_id);
4892 request->error_index = request->request_id;
4893 if (cdb_length > sizeof(request->cdb))
4894 cdb_length = sizeof(request->cdb);
4895 request->cdb_length = cdb_length;
4896 memcpy(request->cdb, cdb, cdb_length);
4897
4898 switch (scmd->sc_data_direction) {
4899 case DMA_TO_DEVICE:
4900 request->data_direction = SOP_READ_FLAG;
4901 break;
4902 case DMA_FROM_DEVICE:
4903 request->data_direction = SOP_WRITE_FLAG;
4904 break;
4905 case DMA_NONE:
4906 request->data_direction = SOP_NO_DIRECTION_FLAG;
4907 break;
4908 case DMA_BIDIRECTIONAL:
4909 request->data_direction = SOP_BIDIRECTIONAL;
4910 break;
4911 default:
4912 dev_err(&ctrl_info->pci_dev->dev,
4913 "unknown data direction: %d\n",
4914 scmd->sc_data_direction);
6c223761
KB		 4915 break;
4916 }
4917
4918 if (encryption_info) {
4919 request->encryption_enable = true;
4920 put_unaligned_le16(encryption_info->data_encryption_key_index,
4921 &request->data_encryption_key_index);
4922 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
4923 &request->encrypt_tweak_lower);
4924 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
4925 &request->encrypt_tweak_upper);
4926 }
4927
4928 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
4929 if (rc) {
4930 pqi_free_io_request(io_request);
4931 return SCSI_MLQUEUE_HOST_BUSY;
4932 }
4933
4934 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
4935
4936 return 0;
4937}
4938
061ef06a
KB		 4939static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
4940 struct scsi_cmnd *scmd)
4941{
4942 u16 hw_queue;
4943
4944 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
4945 if (hw_queue > ctrl_info->max_hw_queue_index)
4946 hw_queue = 0;
4947
4948 return hw_queue;
4949}
4950
7561a7e4
KB		 4951/*
4952 * This function gets called just before we hand the completed SCSI request
4953 * back to the SML.
4954 */
4955
4956void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
4957{
4958 struct pqi_scsi_dev *device;
4959
4960 device = scmd->device->hostdata;
4961 atomic_dec(&device->scsi_cmds_outstanding);
4962}
4963
6c223761 4964static int pqi_scsi_queue_command(struct Scsi_Host *shost,
7d81d2b8 4965 struct scsi_cmnd *scmd)
6c223761
KB		 4966{
4967 int rc;
4968 struct pqi_ctrl_info *ctrl_info;
4969 struct pqi_scsi_dev *device;
061ef06a 4970 u16 hw_queue;
6c223761
KB		 4971 struct pqi_queue_group *queue_group;
4972 bool raid_bypassed;
4973
4974 device = scmd->device->hostdata;
6c223761
KB		 4975 ctrl_info = shost_to_hba(shost);
4976
7561a7e4
KB		 4977 atomic_inc(&device->scsi_cmds_outstanding);
4978
6c223761
KB		 4979 if (pqi_ctrl_offline(ctrl_info)) {
4980 set_host_byte(scmd, DID_NO_CONNECT);
4981 pqi_scsi_done(scmd);
4982 return 0;
4983 }
4984
7561a7e4
KB		 4985 pqi_ctrl_busy(ctrl_info);
4986 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device)) {
4987 rc = SCSI_MLQUEUE_HOST_BUSY;
4988 goto out;
4989 }
4990
7d81d2b8
KB		 4991 /*
4992 * This is necessary because the SML doesn't zero out this field during
4993 * error recovery.
4994 */
4995 scmd->result = 0;
4996
061ef06a
KB		 4997 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
4998 queue_group = &ctrl_info->queue_groups[hw_queue];
6c223761
KB		 4999
5000 if (pqi_is_logical_device(device)) {
5001 raid_bypassed = false;
588a63fe 5002 if (device->raid_bypass_enabled &&
57292b58 5003 !blk_rq_is_passthrough(scmd->request)) {
6c223761
KB		 5004 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
5005 scmd, queue_group);
376fb880
KB		 5006 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
5007 raid_bypassed = true;
6c223761
KB		 5008 }
5009 if (!raid_bypassed)
5010 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5011 queue_group);
5012 } else {
5013 if (device->aio_enabled)
5014 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd,
5015 queue_group);
5016 else
5017 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5018 queue_group);
5019 }
5020
7561a7e4
KB		 5021out:
5022 pqi_ctrl_unbusy(ctrl_info);
5023 if (rc)
5024 atomic_dec(&device->scsi_cmds_outstanding);
5025
6c223761
KB		 5026 return rc;
5027}
5028
7561a7e4
KB		 5029static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
5030 struct pqi_queue_group *queue_group)
5031{
5032 unsigned int path;
5033 unsigned long flags;
5034 bool list_is_empty;
5035
5036 for (path = 0; path < 2; path++) {
5037 while (1) {
5038 spin_lock_irqsave(
5039 &queue_group->submit_lock[path], flags);
5040 list_is_empty =
5041 list_empty(&queue_group->request_list[path]);
5042 spin_unlock_irqrestore(
5043 &queue_group->submit_lock[path], flags);
5044 if (list_is_empty)
5045 break;
5046 pqi_check_ctrl_health(ctrl_info);
5047 if (pqi_ctrl_offline(ctrl_info))
5048 return -ENXIO;
5049 usleep_range(1000, 2000);
5050 }
5051 }
5052
5053 return 0;
5054}
5055
5056static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
5057{
5058 int rc;
5059 unsigned int i;
5060 unsigned int path;
5061 struct pqi_queue_group *queue_group;
5062 pqi_index_t iq_pi;
5063 pqi_index_t iq_ci;
5064
5065 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5066 queue_group = &ctrl_info->queue_groups[i];
5067
5068 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
5069 if (rc)
5070 return rc;
5071
5072 for (path = 0; path < 2; path++) {
5073 iq_pi = queue_group->iq_pi_copy[path];
5074
5075 while (1) {
5076 iq_ci = *queue_group->iq_ci[path];
5077 if (iq_ci == iq_pi)
5078 break;
5079 pqi_check_ctrl_health(ctrl_info);
5080 if (pqi_ctrl_offline(ctrl_info))
5081 return -ENXIO;
5082 usleep_range(1000, 2000);
5083 }
5084 }
5085 }
5086
5087 return 0;
5088}
5089
5090static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5091 struct pqi_scsi_dev *device)
5092{
5093 unsigned int i;
5094 unsigned int path;
5095 struct pqi_queue_group *queue_group;
5096 unsigned long flags;
5097 struct pqi_io_request *io_request;
5098 struct pqi_io_request *next;
5099 struct scsi_cmnd *scmd;
5100 struct pqi_scsi_dev *scsi_device;
5101
5102 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5103 queue_group = &ctrl_info->queue_groups[i];
5104
5105 for (path = 0; path < 2; path++) {
5106 spin_lock_irqsave(
5107 &queue_group->submit_lock[path], flags);
5108
5109 list_for_each_entry_safe(io_request, next,
5110 &queue_group->request_list[path],
5111 request_list_entry) {
5112 scmd = io_request->scmd;
5113 if (!scmd)
5114 continue;
5115
5116 scsi_device = scmd->device->hostdata;
5117 if (scsi_device != device)
5118 continue;
5119
5120 list_del(&io_request->request_list_entry);
5121 set_host_byte(scmd, DID_RESET);
5122 pqi_scsi_done(scmd);
5123 }
5124
5125 spin_unlock_irqrestore(
5126 &queue_group->submit_lock[path], flags);
5127 }
5128 }
5129}
5130
061ef06a
KB		 5131static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5132 struct pqi_scsi_dev *device)
5133{
5134 while (atomic_read(&device->scsi_cmds_outstanding)) {
5135 pqi_check_ctrl_health(ctrl_info);
5136 if (pqi_ctrl_offline(ctrl_info))
5137 return -ENXIO;
5138 usleep_range(1000, 2000);
5139 }
5140
5141 return 0;
5142}
5143
5144static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info)
5145{
5146 bool io_pending;
5147 unsigned long flags;
5148 struct pqi_scsi_dev *device;
5149
5150 while (1) {
5151 io_pending = false;
5152
5153 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5154 list_for_each_entry(device, &ctrl_info->scsi_device_list,
5155 scsi_device_list_entry) {
5156 if (atomic_read(&device->scsi_cmds_outstanding)) {
5157 io_pending = true;
5158 break;
5159 }
5160 }
5161 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5162 flags);
5163
5164 if (!io_pending)
5165 break;
5166
5167 pqi_check_ctrl_health(ctrl_info);
5168 if (pqi_ctrl_offline(ctrl_info))
5169 return -ENXIO;
5170
5171 usleep_range(1000, 2000);
5172 }
5173
5174 return 0;
5175}
5176
14bb215d
KB		 5177static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
5178 void *context)
6c223761 5179{
14bb215d 5180 struct completion *waiting = context;
6c223761 5181
14bb215d
KB		 5182 complete(waiting);
5183}
6c223761 5184
14bb215d
KB		 5185#define PQI_LUN_RESET_TIMEOUT_SECS 10
5186
5187static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
5188 struct pqi_scsi_dev *device, struct completion *wait)
5189{
5190 int rc;
14bb215d
KB		 5191
5192 while (1) {
5193 if (wait_for_completion_io_timeout(wait,
5194 PQI_LUN_RESET_TIMEOUT_SECS * HZ)) {
5195 rc = 0;
5196 break;
6c223761
KB		 5197 }
5198
14bb215d
KB		 5199 pqi_check_ctrl_health(ctrl_info);
5200 if (pqi_ctrl_offline(ctrl_info)) {
4e8415e3 5201 rc = -ENXIO;
14bb215d
KB		 5202 break;
5203 }
6c223761 5204 }
6c223761 5205
14bb215d 5206 return rc;
6c223761
KB		 5207}
5208
14bb215d 5209static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 5210 struct pqi_scsi_dev *device)
5211{
5212 int rc;
5213 struct pqi_io_request *io_request;
5214 DECLARE_COMPLETION_ONSTACK(wait);
5215 struct pqi_task_management_request *request;
5216
6c223761 5217 io_request = pqi_alloc_io_request(ctrl_info);
14bb215d 5218 io_request->io_complete_callback = pqi_lun_reset_complete;
6c223761
KB		 5219 io_request->context = &wait;
5220
5221 request = io_request->iu;
5222 memset(request, 0, sizeof(*request));
5223
5224 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
5225 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
5226 &request->header.iu_length);
5227 put_unaligned_le16(io_request->index, &request->request_id);
5228 memcpy(request->lun_number, device->scsi3addr,
5229 sizeof(request->lun_number));
5230 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
5231
5232 pqi_start_io(ctrl_info,
5233 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
5234 io_request);
5235
14bb215d
KB		 5236 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
5237 if (rc == 0)
6c223761 5238 rc = io_request->status;
6c223761
KB		 5239
5240 pqi_free_io_request(io_request);
6c223761
KB		 5241
5242 return rc;
5243}
5244
5245/* Performs a reset at the LUN level. */
5246
5247static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5248 struct pqi_scsi_dev *device)
5249{
5250 int rc;
5251
14bb215d 5252 rc = pqi_lun_reset(ctrl_info, device);
061ef06a
KB		 5253 if (rc == 0)
5254 rc = pqi_device_wait_for_pending_io(ctrl_info, device);
6c223761 5255
14bb215d 5256 return rc == 0 ? SUCCESS : FAILED;
6c223761
KB		 5257}
5258
5259static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
5260{
5261 int rc;
7561a7e4 5262 struct Scsi_Host *shost;
6c223761
KB		 5263 struct pqi_ctrl_info *ctrl_info;
5264 struct pqi_scsi_dev *device;
5265
7561a7e4
KB		 5266 shost = scmd->device->host;
5267 ctrl_info = shost_to_hba(shost);
6c223761
KB		 5268 device = scmd->device->hostdata;
5269
5270 dev_err(&ctrl_info->pci_dev->dev,
5271 "resetting scsi %d:%d:%d:%d\n",
7561a7e4 5272 shost->host_no, device->bus, device->target, device->lun);
6c223761 5273
7561a7e4
KB		 5274 pqi_check_ctrl_health(ctrl_info);
5275 if (pqi_ctrl_offline(ctrl_info)) {
5276 rc = FAILED;
5277 goto out;
5278 }
6c223761 5279
7561a7e4
KB		 5280 mutex_lock(&ctrl_info->lun_reset_mutex);
5281
5282 pqi_ctrl_block_requests(ctrl_info);
5283 pqi_ctrl_wait_until_quiesced(ctrl_info);
5284 pqi_fail_io_queued_for_device(ctrl_info, device);
5285 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
5286 pqi_device_reset_start(device);
5287 pqi_ctrl_unblock_requests(ctrl_info);
5288
5289 if (rc)
5290 rc = FAILED;
5291 else
5292 rc = pqi_device_reset(ctrl_info, device);
5293
5294 pqi_device_reset_done(device);
5295
5296 mutex_unlock(&ctrl_info->lun_reset_mutex);
5297
5298out:
6c223761
KB		 5299 dev_err(&ctrl_info->pci_dev->dev,
5300 "reset of scsi %d:%d:%d:%d: %s\n",
7561a7e4 5301 shost->host_no, device->bus, device->target, device->lun,
6c223761
KB		 5302 rc == SUCCESS ? "SUCCESS" : "FAILED");
5303
5304 return rc;
5305}
5306
5307static int pqi_slave_alloc(struct scsi_device *sdev)
5308{
5309 struct pqi_scsi_dev *device;
5310 unsigned long flags;
5311 struct pqi_ctrl_info *ctrl_info;
5312 struct scsi_target *starget;
5313 struct sas_rphy *rphy;
5314
5315 ctrl_info = shost_to_hba(sdev->host);
5316
5317 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5318
5319 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
5320 starget = scsi_target(sdev);
5321 rphy = target_to_rphy(starget);
5322 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
5323 if (device) {
5324 device->target = sdev_id(sdev);
5325 device->lun = sdev->lun;
5326 device->target_lun_valid = true;
5327 }
5328 } else {
5329 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
5330 sdev_id(sdev), sdev->lun);
5331 }
5332
94086f5b 5333 if (device) {
6c223761
KB		 5334 sdev->hostdata = device;
5335 device->sdev = sdev;
5336 if (device->queue_depth) {
5337 device->advertised_queue_depth = device->queue_depth;
5338 scsi_change_queue_depth(sdev,
5339 device->advertised_queue_depth);
5340 }
5341 }
5342
5343 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5344
5345 return 0;
5346}
5347
52198226
CH		 5348static int pqi_map_queues(struct Scsi_Host *shost)
5349{
5350 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
5351
5352 return blk_mq_pci_map_queues(&shost->tag_set, ctrl_info->pci_dev);
5353}
5354
6c223761
KB		 5355static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
5356 void __user *arg)
5357{
5358 struct pci_dev *pci_dev;
5359 u32 subsystem_vendor;
5360 u32 subsystem_device;
5361 cciss_pci_info_struct pciinfo;
5362
5363 if (!arg)
5364 return -EINVAL;
5365
5366 pci_dev = ctrl_info->pci_dev;
5367
5368 pciinfo.domain = pci_domain_nr(pci_dev->bus);
5369 pciinfo.bus = pci_dev->bus->number;
5370 pciinfo.dev_fn = pci_dev->devfn;
5371 subsystem_vendor = pci_dev->subsystem_vendor;
5372 subsystem_device = pci_dev->subsystem_device;
5373 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) |
5374 subsystem_vendor;
5375
5376 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
5377 return -EFAULT;
5378
5379 return 0;
5380}
5381
5382static int pqi_getdrivver_ioctl(void __user *arg)
5383{
5384 u32 version;
5385
5386 if (!arg)
5387 return -EINVAL;
5388
5389 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
5390 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
5391
5392 if (copy_to_user(arg, &version, sizeof(version)))
5393 return -EFAULT;
5394
5395 return 0;
5396}
5397
5398struct ciss_error_info {
5399 u8 scsi_status;
5400 int command_status;
5401 size_t sense_data_length;
5402};
5403
5404static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
5405 struct ciss_error_info *ciss_error_info)
5406{
5407 int ciss_cmd_status;
5408 size_t sense_data_length;
5409
5410 switch (pqi_error_info->data_out_result) {
5411 case PQI_DATA_IN_OUT_GOOD:
5412 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
5413 break;
5414 case PQI_DATA_IN_OUT_UNDERFLOW:
5415 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
5416 break;
5417 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
5418 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
5419 break;
5420 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
5421 case PQI_DATA_IN_OUT_BUFFER_ERROR:
5422 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
5423 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
5424 case PQI_DATA_IN_OUT_ERROR:
5425 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
5426 break;
5427 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
5428 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
5429 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
5430 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
5431 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
5432 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
5433 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
5434 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
5435 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
5436 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
5437 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
5438 break;
5439 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
5440 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
5441 break;
5442 case PQI_DATA_IN_OUT_ABORTED:
5443 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
5444 break;
5445 case PQI_DATA_IN_OUT_TIMEOUT:
5446 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
5447 break;
5448 default:
5449 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
5450 break;
5451 }
5452
5453 sense_data_length =
5454 get_unaligned_le16(&pqi_error_info->sense_data_length);
5455 if (sense_data_length == 0)
5456 sense_data_length =
5457 get_unaligned_le16(&pqi_error_info->response_data_length);
5458 if (sense_data_length)
5459 if (sense_data_length > sizeof(pqi_error_info->data))
5460 sense_data_length = sizeof(pqi_error_info->data);
5461
5462 ciss_error_info->scsi_status = pqi_error_info->status;
5463 ciss_error_info->command_status = ciss_cmd_status;
5464 ciss_error_info->sense_data_length = sense_data_length;
5465}
5466
5467static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
5468{
5469 int rc;
5470 char *kernel_buffer = NULL;
5471 u16 iu_length;
5472 size_t sense_data_length;
5473 IOCTL_Command_struct iocommand;
5474 struct pqi_raid_path_request request;
5475 struct pqi_raid_error_info pqi_error_info;
5476 struct ciss_error_info ciss_error_info;
5477
5478 if (pqi_ctrl_offline(ctrl_info))
5479 return -ENXIO;
5480 if (!arg)
5481 return -EINVAL;
5482 if (!capable(CAP_SYS_RAWIO))
5483 return -EPERM;
5484 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
5485 return -EFAULT;
5486 if (iocommand.buf_size < 1 &&
5487 iocommand.Request.Type.Direction != XFER_NONE)
5488 return -EINVAL;
5489 if (iocommand.Request.CDBLen > sizeof(request.cdb))
5490 return -EINVAL;
5491 if (iocommand.Request.Type.Type != TYPE_CMD)
5492 return -EINVAL;
5493
5494 switch (iocommand.Request.Type.Direction) {
5495 case XFER_NONE:
5496 case XFER_WRITE:
5497 case XFER_READ:
41555d54 5498 case XFER_READ | XFER_WRITE:
6c223761
KB		 5499 break;
5500 default:
5501 return -EINVAL;
5502 }
5503
5504 if (iocommand.buf_size > 0) {
5505 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
5506 if (!kernel_buffer)
5507 return -ENOMEM;
5508 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5509 if (copy_from_user(kernel_buffer, iocommand.buf,
5510 iocommand.buf_size)) {
5511 rc = -EFAULT;
5512 goto out;
5513 }
5514 } else {
5515 memset(kernel_buffer, 0, iocommand.buf_size);
5516 }
5517 }
5518
5519 memset(&request, 0, sizeof(request));
5520
5521 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
5522 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
5523 PQI_REQUEST_HEADER_LENGTH;
5524 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
5525 sizeof(request.lun_number));
5526 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
5527 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
5528
5529 switch (iocommand.Request.Type.Direction) {
5530 case XFER_NONE:
5531 request.data_direction = SOP_NO_DIRECTION_FLAG;
5532 break;
5533 case XFER_WRITE:
5534 request.data_direction = SOP_WRITE_FLAG;
5535 break;
5536 case XFER_READ:
5537 request.data_direction = SOP_READ_FLAG;
5538 break;
41555d54
KB		 5539 case XFER_READ | XFER_WRITE:
5540 request.data_direction = SOP_BIDIRECTIONAL;
5541 break;
6c223761
KB		 5542 }
5543
5544 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5545
5546 if (iocommand.buf_size > 0) {
5547 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
5548
5549 rc = pqi_map_single(ctrl_info->pci_dev,
5550 &request.sg_descriptors[0], kernel_buffer,
5551 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
5552 if (rc)
5553 goto out;
5554
5555 iu_length += sizeof(request.sg_descriptors[0]);
5556 }
5557
5558 put_unaligned_le16(iu_length, &request.header.iu_length);
5559
5560 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
5561 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
5562
5563 if (iocommand.buf_size > 0)
5564 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
5565 PCI_DMA_BIDIRECTIONAL);
5566
5567 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
5568
5569 if (rc == 0) {
5570 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
5571 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
5572 iocommand.error_info.CommandStatus =
5573 ciss_error_info.command_status;
5574 sense_data_length = ciss_error_info.sense_data_length;
5575 if (sense_data_length) {
5576 if (sense_data_length >
5577 sizeof(iocommand.error_info.SenseInfo))
5578 sense_data_length =
5579 sizeof(iocommand.error_info.SenseInfo);
5580 memcpy(iocommand.error_info.SenseInfo,
5581 pqi_error_info.data, sense_data_length);
5582 iocommand.error_info.SenseLen = sense_data_length;
5583 }
5584 }
5585
5586 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
5587 rc = -EFAULT;
5588 goto out;
5589 }
5590
5591 if (rc == 0 && iocommand.buf_size > 0 &&
5592 (iocommand.Request.Type.Direction & XFER_READ)) {
5593 if (copy_to_user(iocommand.buf, kernel_buffer,
5594 iocommand.buf_size)) {
5595 rc = -EFAULT;
5596 }
5597 }
5598
5599out:
5600 kfree(kernel_buffer);
5601
5602 return rc;
5603}
5604
5605static int pqi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5606{
5607 int rc;
5608 struct pqi_ctrl_info *ctrl_info;
5609
5610 ctrl_info = shost_to_hba(sdev->host);
5611
5612 switch (cmd) {
5613 case CCISS_DEREGDISK:
5614 case CCISS_REGNEWDISK:
5615 case CCISS_REGNEWD:
5616 rc = pqi_scan_scsi_devices(ctrl_info);
5617 break;
5618 case CCISS_GETPCIINFO:
5619 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
5620 break;
5621 case CCISS_GETDRIVVER:
5622 rc = pqi_getdrivver_ioctl(arg);
5623 break;
5624 case CCISS_PASSTHRU:
5625 rc = pqi_passthru_ioctl(ctrl_info, arg);
5626 break;
5627 default:
5628 rc = -EINVAL;
5629 break;
5630 }
5631
5632 return rc;
5633}
5634
5635static ssize_t pqi_version_show(struct device *dev,
5636 struct device_attribute *attr, char *buffer)
5637{
5638 ssize_t count = 0;
5639 struct Scsi_Host *shost;
5640 struct pqi_ctrl_info *ctrl_info;
5641
5642 shost = class_to_shost(dev);
5643 ctrl_info = shost_to_hba(shost);
5644
5645 count += snprintf(buffer + count, PAGE_SIZE - count,
5646 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP);
5647
5648 count += snprintf(buffer + count, PAGE_SIZE - count,
5649 "firmware: %s\n", ctrl_info->firmware_version);
5650
5651 return count;
5652}
5653
5654static ssize_t pqi_host_rescan_store(struct device *dev,
5655 struct device_attribute *attr, const char *buffer, size_t count)
5656{
5657 struct Scsi_Host *shost = class_to_shost(dev);
5658
5659 pqi_scan_start(shost);
5660
5661 return count;
5662}
5663
3c50976f
KB		 5664static ssize_t pqi_lockup_action_show(struct device *dev,
5665 struct device_attribute *attr, char *buffer)
5666{
5667 int count = 0;
5668 unsigned int i;
5669
5670 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
5671 if (pqi_lockup_actions[i].action == pqi_lockup_action)
5672 count += snprintf(buffer + count, PAGE_SIZE - count,
5673 "[%s] ", pqi_lockup_actions[i].name);
5674 else
5675 count += snprintf(buffer + count, PAGE_SIZE - count,
5676 "%s ", pqi_lockup_actions[i].name);
5677 }
5678
5679 count += snprintf(buffer + count, PAGE_SIZE - count, "\n");
5680
5681 return count;
5682}
5683
5684static ssize_t pqi_lockup_action_store(struct device *dev,
5685 struct device_attribute *attr, const char *buffer, size_t count)
5686{
5687 unsigned int i;
5688 char *action_name;
5689 char action_name_buffer[32];
5690
5691 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
5692 action_name = strstrip(action_name_buffer);
5693
5694 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
5695 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
5696 pqi_lockup_action = pqi_lockup_actions[i].action;
5697 return count;
5698 }
5699 }
5700
5701 return -EINVAL;
5702}
5703
cbe0c7b1
KB		 5704static DEVICE_ATTR(version, 0444, pqi_version_show, NULL);
5705static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
3c50976f
KB		 5706static DEVICE_ATTR(lockup_action, 0644,
5707 pqi_lockup_action_show, pqi_lockup_action_store);
6c223761
KB		 5708
5709static struct device_attribute *pqi_shost_attrs[] = {
5710 &dev_attr_version,
5711 &dev_attr_rescan,
3c50976f 5712 &dev_attr_lockup_action,
6c223761
KB		 5713 NULL
5714};
5715
5716static ssize_t pqi_sas_address_show(struct device *dev,
5717 struct device_attribute *attr, char *buffer)
5718{
5719 struct pqi_ctrl_info *ctrl_info;
5720 struct scsi_device *sdev;
5721 struct pqi_scsi_dev *device;
5722 unsigned long flags;
5723 u64 sas_address;
5724
5725 sdev = to_scsi_device(dev);
5726 ctrl_info = shost_to_hba(sdev->host);
5727
5728 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5729
5730 device = sdev->hostdata;
5731 if (pqi_is_logical_device(device)) {
5732 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5733 flags);
5734 return -ENODEV;
5735 }
5736 sas_address = device->sas_address;
5737
5738 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5739
5740 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
5741}
5742
5743static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
5744 struct device_attribute *attr, char *buffer)
5745{
5746 struct pqi_ctrl_info *ctrl_info;
5747 struct scsi_device *sdev;
5748 struct pqi_scsi_dev *device;
5749 unsigned long flags;
5750
5751 sdev = to_scsi_device(dev);
5752 ctrl_info = shost_to_hba(sdev->host);
5753
5754 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5755
5756 device = sdev->hostdata;
588a63fe 5757 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
6c223761
KB		 5758 buffer[1] = '\n';
5759 buffer[2] = '\0';
5760
5761 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5762
5763 return 2;
5764}
5765
a9f93392
KB		 5766static ssize_t pqi_raid_level_show(struct device *dev,
5767 struct device_attribute *attr, char *buffer)
5768{
5769 struct pqi_ctrl_info *ctrl_info;
5770 struct scsi_device *sdev;
5771 struct pqi_scsi_dev *device;
5772 unsigned long flags;
5773 char *raid_level;
5774
5775 sdev = to_scsi_device(dev);
5776 ctrl_info = shost_to_hba(sdev->host);
5777
5778 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5779
5780 device = sdev->hostdata;
5781
5782 if (pqi_is_logical_device(device))
5783 raid_level = pqi_raid_level_to_string(device->raid_level);
5784 else
5785 raid_level = "N/A";
5786
5787 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5788
5789 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
5790}
5791
cbe0c7b1
KB		 5792static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
5793static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
6c223761 5794 pqi_ssd_smart_path_enabled_show, NULL);
a9f93392 5795static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
6c223761
KB		 5796
5797static struct device_attribute *pqi_sdev_attrs[] = {
5798 &dev_attr_sas_address,
5799 &dev_attr_ssd_smart_path_enabled,
a9f93392 5800 &dev_attr_raid_level,
6c223761
KB		 5801 NULL
5802};
5803
5804static struct scsi_host_template pqi_driver_template = {
5805 .module = THIS_MODULE,
5806 .name = DRIVER_NAME_SHORT,
5807 .proc_name = DRIVER_NAME_SHORT,
5808 .queuecommand = pqi_scsi_queue_command,
5809 .scan_start = pqi_scan_start,
5810 .scan_finished = pqi_scan_finished,
5811 .this_id = -1,
5812 .use_clustering = ENABLE_CLUSTERING,
5813 .eh_device_reset_handler = pqi_eh_device_reset_handler,
5814 .ioctl = pqi_ioctl,
5815 .slave_alloc = pqi_slave_alloc,
52198226 5816 .map_queues = pqi_map_queues,
6c223761
KB		 5817 .sdev_attrs = pqi_sdev_attrs,
5818 .shost_attrs = pqi_shost_attrs,
5819};
5820
5821static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
5822{
5823 int rc;
5824 struct Scsi_Host *shost;
5825
5826 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
5827 if (!shost) {
5828 dev_err(&ctrl_info->pci_dev->dev,
5829 "scsi_host_alloc failed for controller %u\n",
5830 ctrl_info->ctrl_id);
5831 return -ENOMEM;
5832 }
5833
5834 shost->io_port = 0;
5835 shost->n_io_port = 0;
5836 shost->this_id = -1;
5837 shost->max_channel = PQI_MAX_BUS;
5838 shost->max_cmd_len = MAX_COMMAND_SIZE;
5839 shost->max_lun = ~0;
5840 shost->max_id = ~0;
5841 shost->max_sectors = ctrl_info->max_sectors;
5842 shost->can_queue = ctrl_info->scsi_ml_can_queue;
5843 shost->cmd_per_lun = shost->can_queue;
5844 shost->sg_tablesize = ctrl_info->sg_tablesize;
5845 shost->transportt = pqi_sas_transport_template;
52198226 5846 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
6c223761
KB		 5847 shost->unique_id = shost->irq;
5848 shost->nr_hw_queues = ctrl_info->num_queue_groups;
5849 shost->hostdata[0] = (unsigned long)ctrl_info;
5850
5851 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
5852 if (rc) {
5853 dev_err(&ctrl_info->pci_dev->dev,
5854 "scsi_add_host failed for controller %u\n",
5855 ctrl_info->ctrl_id);
5856 goto free_host;
5857 }
5858
5859 rc = pqi_add_sas_host(shost, ctrl_info);
5860 if (rc) {
5861 dev_err(&ctrl_info->pci_dev->dev,
5862 "add SAS host failed for controller %u\n",
5863 ctrl_info->ctrl_id);
5864 goto remove_host;
5865 }
5866
5867 ctrl_info->scsi_host = shost;
5868
5869 return 0;
5870
5871remove_host:
5872 scsi_remove_host(shost);
5873free_host:
5874 scsi_host_put(shost);
5875
5876 return rc;
5877}
5878
5879static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
5880{
5881 struct Scsi_Host *shost;
5882
5883 pqi_delete_sas_host(ctrl_info);
5884
5885 shost = ctrl_info->scsi_host;
5886 if (!shost)
5887 return;
5888
5889 scsi_remove_host(shost);
5890 scsi_host_put(shost);
5891}
5892
336b6819
KB		 5893static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
5894{
5895 int rc = 0;
5896 struct pqi_device_registers __iomem *pqi_registers;
5897 unsigned long timeout;
5898 unsigned int timeout_msecs;
5899 union pqi_reset_register reset_reg;
6c223761 5900
336b6819
KB		 5901 pqi_registers = ctrl_info->pqi_registers;
5902 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
5903 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
5904
5905 while (1) {
5906 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
5907 reset_reg.all_bits = readl(&pqi_registers->device_reset);
5908 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
5909 break;
5910 pqi_check_ctrl_health(ctrl_info);
5911 if (pqi_ctrl_offline(ctrl_info)) {
5912 rc = -ENXIO;
5913 break;
5914 }
5915 if (time_after(jiffies, timeout)) {
5916 rc = -ETIMEDOUT;
5917 break;
5918 }
5919 }
5920
5921 return rc;
5922}
6c223761
KB		 5923
5924static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
5925{
5926 int rc;
336b6819
KB		 5927 union pqi_reset_register reset_reg;
5928
5929 if (ctrl_info->pqi_reset_quiesce_supported) {
5930 rc = sis_pqi_reset_quiesce(ctrl_info);
5931 if (rc) {
5932 dev_err(&ctrl_info->pci_dev->dev,
5933 "PQI reset failed during quiesce with error %d\n",
5934 rc);
5935 return rc;
5936 }
5937 }
6c223761 5938
336b6819
KB		 5939 reset_reg.all_bits = 0;
5940 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
5941 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
6c223761 5942
336b6819 5943 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
6c223761 5944
336b6819 5945 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
6c223761
KB		 5946 if (rc)
5947 dev_err(&ctrl_info->pci_dev->dev,
336b6819 5948 "PQI reset failed with error %d\n", rc);
6c223761
KB		 5949
5950 return rc;
5951}
5952
5953static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info)
5954{
5955 int rc;
5956 struct bmic_identify_controller *identify;
5957
5958 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
5959 if (!identify)
5960 return -ENOMEM;
5961
5962 rc = pqi_identify_controller(ctrl_info, identify);
5963 if (rc)
5964 goto out;
5965
5966 memcpy(ctrl_info->firmware_version, identify->firmware_version,
5967 sizeof(identify->firmware_version));
5968 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
5969 snprintf(ctrl_info->firmware_version +
5970 strlen(ctrl_info->firmware_version),
5971 sizeof(ctrl_info->firmware_version),
5972 "-%u", get_unaligned_le16(&identify->firmware_build_number));
5973
5974out:
5975 kfree(identify);
5976
5977 return rc;
5978}
5979
98f87667
KB		 5980static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
5981{
5982 u32 table_length;
5983 u32 section_offset;
5984 void __iomem *table_iomem_addr;
5985 struct pqi_config_table *config_table;
5986 struct pqi_config_table_section_header *section;
5987
5988 table_length = ctrl_info->config_table_length;
5989
5990 config_table = kmalloc(table_length, GFP_KERNEL);
5991 if (!config_table) {
5992 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 5993 "failed to allocate memory for PQI configuration table\n");
98f87667
KB		 5994 return -ENOMEM;
5995 }
5996
5997 /*
5998 * Copy the config table contents from I/O memory space into the
5999 * temporary buffer.
6000 */
6001 table_iomem_addr = ctrl_info->iomem_base +
6002 ctrl_info->config_table_offset;
6003 memcpy_fromio(config_table, table_iomem_addr, table_length);
6004
6005 section_offset =
6006 get_unaligned_le32(&config_table->first_section_offset);
6007
6008 while (section_offset) {
6009 section = (void *)config_table + section_offset;
6010
6011 switch (get_unaligned_le16(&section->section_id)) {
6012 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
5a259e32
KB		 6013 if (pqi_disable_heartbeat)
6014 dev_warn(&ctrl_info->pci_dev->dev,
6015 "heartbeat disabled by module parameter\n");
6016 else
6017 ctrl_info->heartbeat_counter =
6018 table_iomem_addr +
6019 section_offset +
6020 offsetof(
6021 struct pqi_config_table_heartbeat,
6022 heartbeat_counter);
98f87667
KB		 6023 break;
6024 }
6025
6026 section_offset =
6027 get_unaligned_le16(&section->next_section_offset);
6028 }
6029
6030 kfree(config_table);
6031
6032 return 0;
6033}
6034
162d7753
KB		 6035/* Switches the controller from PQI mode back into SIS mode. */
6036
6037static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
6038{
6039 int rc;
6040
061ef06a 6041 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
162d7753
KB		 6042 rc = pqi_reset(ctrl_info);
6043 if (rc)
6044 return rc;
4f078e24
KB		 6045 rc = sis_reenable_sis_mode(ctrl_info);
6046 if (rc) {
6047 dev_err(&ctrl_info->pci_dev->dev,
6048 "re-enabling SIS mode failed with error %d\n", rc);
6049 return rc;
6050 }
162d7753
KB		 6051 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6052
6053 return 0;
6054}
6055
6056/*
6057 * If the controller isn't already in SIS mode, this function forces it into
6058 * SIS mode.
6059 */
6060
6061static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
ff6abb73
KB		 6062{
6063 if (!sis_is_firmware_running(ctrl_info))
6064 return -ENXIO;
6065
162d7753
KB		 6066 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
6067 return 0;
6068
6069 if (sis_is_kernel_up(ctrl_info)) {
6070 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6071 return 0;
ff6abb73
KB		 6072 }
6073
162d7753 6074 return pqi_revert_to_sis_mode(ctrl_info);
ff6abb73
KB		 6075}
6076
6c223761
KB		 6077static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
6078{
6079 int rc;
6080
162d7753
KB		 6081 rc = pqi_force_sis_mode(ctrl_info);
6082 if (rc)
6083 return rc;
6c223761
KB		 6084
6085 /*
6086 * Wait until the controller is ready to start accepting SIS
6087 * commands.
6088 */
6089 rc = sis_wait_for_ctrl_ready(ctrl_info);
8845fdfa 6090 if (rc)
6c223761 6091 return rc;
6c223761
KB		 6092
6093 /*
6094 * Get the controller properties. This allows us to determine
6095 * whether or not it supports PQI mode.
6096 */
6097 rc = sis_get_ctrl_properties(ctrl_info);
6098 if (rc) {
6099 dev_err(&ctrl_info->pci_dev->dev,
6100 "error obtaining controller properties\n");
6101 return rc;
6102 }
6103
6104 rc = sis_get_pqi_capabilities(ctrl_info);
6105 if (rc) {
6106 dev_err(&ctrl_info->pci_dev->dev,
6107 "error obtaining controller capabilities\n");
6108 return rc;
6109 }
6110
d727a776
KB		 6111 if (reset_devices) {
6112 if (ctrl_info->max_outstanding_requests >
6113 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
6114 ctrl_info->max_outstanding_requests =
6115 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
6116 } else {
6117 if (ctrl_info->max_outstanding_requests >
6118 PQI_MAX_OUTSTANDING_REQUESTS)
6119 ctrl_info->max_outstanding_requests =
6120 PQI_MAX_OUTSTANDING_REQUESTS;
6121 }
6c223761
KB		 6122
6123 pqi_calculate_io_resources(ctrl_info);
6124
6125 rc = pqi_alloc_error_buffer(ctrl_info);
6126 if (rc) {
6127 dev_err(&ctrl_info->pci_dev->dev,
6128 "failed to allocate PQI error buffer\n");
6129 return rc;
6130 }
6131
6132 /*
6133 * If the function we are about to call succeeds, the
6134 * controller will transition from legacy SIS mode
6135 * into PQI mode.
6136 */
6137 rc = sis_init_base_struct_addr(ctrl_info);
6138 if (rc) {
6139 dev_err(&ctrl_info->pci_dev->dev,
6140 "error initializing PQI mode\n");
6141 return rc;
6142 }
6143
6144 /* Wait for the controller to complete the SIS -> PQI transition. */
6145 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6146 if (rc) {
6147 dev_err(&ctrl_info->pci_dev->dev,
6148 "transition to PQI mode failed\n");
6149 return rc;
6150 }
6151
6152 /* From here on, we are running in PQI mode. */
6153 ctrl_info->pqi_mode_enabled = true;
ff6abb73 6154 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6c223761 6155
98f87667
KB		 6156 rc = pqi_process_config_table(ctrl_info);
6157 if (rc)
6158 return rc;
6159
6c223761
KB		 6160 rc = pqi_alloc_admin_queues(ctrl_info);
6161 if (rc) {
6162 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 6163 "failed to allocate admin queues\n");
6c223761
KB		 6164 return rc;
6165 }
6166
6167 rc = pqi_create_admin_queues(ctrl_info);
6168 if (rc) {
6169 dev_err(&ctrl_info->pci_dev->dev,
6170 "error creating admin queues\n");
6171 return rc;
6172 }
6173
6174 rc = pqi_report_device_capability(ctrl_info);
6175 if (rc) {
6176 dev_err(&ctrl_info->pci_dev->dev,
6177 "obtaining device capability failed\n");
6178 return rc;
6179 }
6180
6181 rc = pqi_validate_device_capability(ctrl_info);
6182 if (rc)
6183 return rc;
6184
6185 pqi_calculate_queue_resources(ctrl_info);
6186
6187 rc = pqi_enable_msix_interrupts(ctrl_info);
6188 if (rc)
6189 return rc;
6190
6191 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
6192 ctrl_info->max_msix_vectors =
6193 ctrl_info->num_msix_vectors_enabled;
6194 pqi_calculate_queue_resources(ctrl_info);
6195 }
6196
6197 rc = pqi_alloc_io_resources(ctrl_info);
6198 if (rc)
6199 return rc;
6200
6201 rc = pqi_alloc_operational_queues(ctrl_info);
d87d5474
KB		 6202 if (rc) {
6203 dev_err(&ctrl_info->pci_dev->dev,
6204 "failed to allocate operational queues\n");
6c223761 6205 return rc;
d87d5474 6206 }
6c223761
KB		 6207
6208 pqi_init_operational_queues(ctrl_info);
6209
6210 rc = pqi_request_irqs(ctrl_info);
6211 if (rc)
6212 return rc;
6213
6c223761
KB		 6214 rc = pqi_create_queues(ctrl_info);
6215 if (rc)
6216 return rc;
6217
061ef06a
KB		 6218 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
6219
6220 ctrl_info->controller_online = true;
6221 pqi_start_heartbeat_timer(ctrl_info);
6c223761 6222
6a50d6ad 6223 rc = pqi_enable_events(ctrl_info);
6c223761
KB		 6224 if (rc) {
6225 dev_err(&ctrl_info->pci_dev->dev,
6a50d6ad 6226 "error enabling events\n");
6c223761
KB		 6227 return rc;
6228 }
6229
6c223761
KB		 6230 /* Register with the SCSI subsystem. */
6231 rc = pqi_register_scsi(ctrl_info);
6232 if (rc)
6233 return rc;
6234
6235 rc = pqi_get_ctrl_firmware_version(ctrl_info);
6236 if (rc) {
6237 dev_err(&ctrl_info->pci_dev->dev,
6238 "error obtaining firmware version\n");
6239 return rc;
6240 }
6241
6242 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
6243 if (rc) {
6244 dev_err(&ctrl_info->pci_dev->dev,
6245 "error updating host wellness\n");
6246 return rc;
6247 }
6248
6249 pqi_schedule_update_time_worker(ctrl_info);
6250
6251 pqi_scan_scsi_devices(ctrl_info);
6252
6253 return 0;
6254}
6255
061ef06a
KB		 6256static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
6257{
6258 unsigned int i;
6259 struct pqi_admin_queues *admin_queues;
6260 struct pqi_event_queue *event_queue;
6261
6262 admin_queues = &ctrl_info->admin_queues;
6263 admin_queues->iq_pi_copy = 0;
6264 admin_queues->oq_ci_copy = 0;
6265 *admin_queues->oq_pi = 0;
6266
6267 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
6268 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
6269 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
6270 ctrl_info->queue_groups[i].oq_ci_copy = 0;
6271
6272 *ctrl_info->queue_groups[i].iq_ci[RAID_PATH] = 0;
6273 *ctrl_info->queue_groups[i].iq_ci[AIO_PATH] = 0;
6274 *ctrl_info->queue_groups[i].oq_pi = 0;
6275 }
6276
6277 event_queue = &ctrl_info->event_queue;
6278 *event_queue->oq_pi = 0;
6279 event_queue->oq_ci_copy = 0;
6280}
6281
6282static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
6283{
6284 int rc;
6285
6286 rc = pqi_force_sis_mode(ctrl_info);
6287 if (rc)
6288 return rc;
6289
6290 /*
6291 * Wait until the controller is ready to start accepting SIS
6292 * commands.
6293 */
6294 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
6295 if (rc)
6296 return rc;
6297
6298 /*
6299 * If the function we are about to call succeeds, the
6300 * controller will transition from legacy SIS mode
6301 * into PQI mode.
6302 */
6303 rc = sis_init_base_struct_addr(ctrl_info);
6304 if (rc) {
6305 dev_err(&ctrl_info->pci_dev->dev,
6306 "error initializing PQI mode\n");
6307 return rc;
6308 }
6309
6310 /* Wait for the controller to complete the SIS -> PQI transition. */
6311 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6312 if (rc) {
6313 dev_err(&ctrl_info->pci_dev->dev,
6314 "transition to PQI mode failed\n");
6315 return rc;
6316 }
6317
6318 /* From here on, we are running in PQI mode. */
6319 ctrl_info->pqi_mode_enabled = true;
6320 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6321
6322 pqi_reinit_queues(ctrl_info);
6323
6324 rc = pqi_create_admin_queues(ctrl_info);
6325 if (rc) {
6326 dev_err(&ctrl_info->pci_dev->dev,
6327 "error creating admin queues\n");
6328 return rc;
6329 }
6330
6331 rc = pqi_create_queues(ctrl_info);
6332 if (rc)
6333 return rc;
6334
6335 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
6336
6337 ctrl_info->controller_online = true;
6338 pqi_start_heartbeat_timer(ctrl_info);
6339 pqi_ctrl_unblock_requests(ctrl_info);
6340
6341 rc = pqi_enable_events(ctrl_info);
6342 if (rc) {
6343 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 6344 "error enabling events\n");
061ef06a
KB		 6345 return rc;
6346 }
6347
6348 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
6349 if (rc) {
6350 dev_err(&ctrl_info->pci_dev->dev,
6351 "error updating host wellness\n");
6352 return rc;
6353 }
6354
6355 pqi_schedule_update_time_worker(ctrl_info);
6356
6357 pqi_scan_scsi_devices(ctrl_info);
6358
6359 return 0;
6360}
6361
a81ed5f3
KB		 6362static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
6363 u16 timeout)
6364{
6365 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
6366 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
6367}
6368
6c223761
KB		 6369static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
6370{
6371 int rc;
6372 u64 mask;
6373
6374 rc = pci_enable_device(ctrl_info->pci_dev);
6375 if (rc) {
6376 dev_err(&ctrl_info->pci_dev->dev,
6377 "failed to enable PCI device\n");
6378 return rc;
6379 }
6380
6381 if (sizeof(dma_addr_t) > 4)
6382 mask = DMA_BIT_MASK(64);
6383 else
6384 mask = DMA_BIT_MASK(32);
6385
6386 rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask);
6387 if (rc) {
6388 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
6389 goto disable_device;
6390 }
6391
6392 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
6393 if (rc) {
6394 dev_err(&ctrl_info->pci_dev->dev,
6395 "failed to obtain PCI resources\n");
6396 goto disable_device;
6397 }
6398
6399 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start(
6400 ctrl_info->pci_dev, 0),
6401 sizeof(struct pqi_ctrl_registers));
6402 if (!ctrl_info->iomem_base) {
6403 dev_err(&ctrl_info->pci_dev->dev,
6404 "failed to map memory for controller registers\n");
6405 rc = -ENOMEM;
6406 goto release_regions;
6407 }
6408
a81ed5f3
KB		 6409#define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
6410
6411 /* Increase the PCIe completion timeout. */
6412 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
6413 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
6414 if (rc) {
6415 dev_err(&ctrl_info->pci_dev->dev,
6416 "failed to set PCIe completion timeout\n");
6417 goto release_regions;
6418 }
6419
6c223761
KB		 6420 /* Enable bus mastering. */
6421 pci_set_master(ctrl_info->pci_dev);
6422
cbe0c7b1
KB		 6423 ctrl_info->registers = ctrl_info->iomem_base;
6424 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
6425
6c223761
KB		 6426 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
6427
6428 return 0;
6429
6430release_regions:
6431 pci_release_regions(ctrl_info->pci_dev);
6432disable_device:
6433 pci_disable_device(ctrl_info->pci_dev);
6434
6435 return rc;
6436}
6437
6438static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
6439{
6440 iounmap(ctrl_info->iomem_base);
6441 pci_release_regions(ctrl_info->pci_dev);
cbe0c7b1
KB		 6442 if (pci_is_enabled(ctrl_info->pci_dev))
6443 pci_disable_device(ctrl_info->pci_dev);
6c223761
KB		 6444 pci_set_drvdata(ctrl_info->pci_dev, NULL);
6445}
6446
6447static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
6448{
6449 struct pqi_ctrl_info *ctrl_info;
6450
6451 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
6452 GFP_KERNEL, numa_node);
6453 if (!ctrl_info)
6454 return NULL;
6455
6456 mutex_init(&ctrl_info->scan_mutex);
7561a7e4 6457 mutex_init(&ctrl_info->lun_reset_mutex);
6c223761
KB		 6458
6459 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
6460 spin_lock_init(&ctrl_info->scsi_device_list_lock);
6461
6462 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
6463 atomic_set(&ctrl_info->num_interrupts, 0);
6464
6465 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
6466 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
6467
98f87667 6468 init_timer(&ctrl_info->heartbeat_timer);
5f310425 6469 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
98f87667 6470
6c223761
KB		 6471 sema_init(&ctrl_info->sync_request_sem,
6472 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
7561a7e4 6473 init_waitqueue_head(&ctrl_info->block_requests_wait);
6c223761 6474
376fb880
KB		 6475 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
6476 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
6477 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
6478 pqi_raid_bypass_retry_worker);
6479
6c223761 6480 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
061ef06a 6481 ctrl_info->irq_mode = IRQ_MODE_NONE;
6c223761
KB		 6482 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
6483
6484 return ctrl_info;
6485}
6486
6487static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
6488{
6489 kfree(ctrl_info);
6490}
6491
6492static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
6493{
98bf061b
KB		 6494 pqi_free_irqs(ctrl_info);
6495 pqi_disable_msix_interrupts(ctrl_info);
6c223761
KB		 6496}
6497
6498static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
6499{
6500 pqi_stop_heartbeat_timer(ctrl_info);
6501 pqi_free_interrupts(ctrl_info);
6502 if (ctrl_info->queue_memory_base)
6503 dma_free_coherent(&ctrl_info->pci_dev->dev,
6504 ctrl_info->queue_memory_length,
6505 ctrl_info->queue_memory_base,
6506 ctrl_info->queue_memory_base_dma_handle);
6507 if (ctrl_info->admin_queue_memory_base)
6508 dma_free_coherent(&ctrl_info->pci_dev->dev,
6509 ctrl_info->admin_queue_memory_length,
6510 ctrl_info->admin_queue_memory_base,
6511 ctrl_info->admin_queue_memory_base_dma_handle);
6512 pqi_free_all_io_requests(ctrl_info);
6513 if (ctrl_info->error_buffer)
6514 dma_free_coherent(&ctrl_info->pci_dev->dev,
6515 ctrl_info->error_buffer_length,
6516 ctrl_info->error_buffer,
6517 ctrl_info->error_buffer_dma_handle);
6518 if (ctrl_info->iomem_base)
6519 pqi_cleanup_pci_init(ctrl_info);
6520 pqi_free_ctrl_info(ctrl_info);
6521}
6522
6523static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
6524{
061ef06a
KB		 6525 pqi_cancel_rescan_worker(ctrl_info);
6526 pqi_cancel_update_time_worker(ctrl_info);
e57a1f9b
KB		 6527 pqi_remove_all_scsi_devices(ctrl_info);
6528 pqi_unregister_scsi(ctrl_info);
162d7753
KB		 6529 if (ctrl_info->pqi_mode_enabled)
6530 pqi_revert_to_sis_mode(ctrl_info);
6c223761
KB		 6531 pqi_free_ctrl_resources(ctrl_info);
6532}
6533
3c50976f
KB		 6534static void pqi_perform_lockup_action(void)
6535{
6536 switch (pqi_lockup_action) {
6537 case PANIC:
6538 panic("FATAL: Smart Family Controller lockup detected");
6539 break;
6540 case REBOOT:
6541 emergency_restart();
6542 break;
6543 case NONE:
6544 default:
6545 break;
6546 }
6547}
6548
5f310425
KB		 6549static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
6550 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
6551 .status = SAM_STAT_CHECK_CONDITION,
6552};
6553
6554static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 6555{
6556 unsigned int i;
376fb880 6557 struct pqi_io_request *io_request;
376fb880
KB		 6558 struct scsi_cmnd *scmd;
6559
5f310425
KB		 6560 for (i = 0; i < ctrl_info->max_io_slots; i++) {
6561 io_request = &ctrl_info->io_request_pool[i];
6562 if (atomic_read(&io_request->refcount) == 0)
6563 continue;
376fb880 6564
5f310425
KB		 6565 scmd = io_request->scmd;
6566 if (scmd) {
6567 set_host_byte(scmd, DID_NO_CONNECT);
6568 } else {
6569 io_request->status = -ENXIO;
6570 io_request->error_info =
6571 &pqi_ctrl_offline_raid_error_info;
376fb880 6572 }
5f310425
KB		 6573
6574 io_request->io_complete_callback(io_request,
6575 io_request->context);
376fb880
KB		 6576 }
6577}
6578
5f310425 6579static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
376fb880 6580{
5f310425
KB		 6581 pqi_perform_lockup_action();
6582 pqi_stop_heartbeat_timer(ctrl_info);
6583 pqi_free_interrupts(ctrl_info);
6584 pqi_cancel_rescan_worker(ctrl_info);
6585 pqi_cancel_update_time_worker(ctrl_info);
6586 pqi_ctrl_wait_until_quiesced(ctrl_info);
6587 pqi_fail_all_outstanding_requests(ctrl_info);
6588 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
6589 pqi_ctrl_unblock_requests(ctrl_info);
6590}
6591
6592static void pqi_ctrl_offline_worker(struct work_struct *work)
6593{
6594 struct pqi_ctrl_info *ctrl_info;
6595
6596 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
6597 pqi_take_ctrl_offline_deferred(ctrl_info);
376fb880
KB		 6598}
6599
6600static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
6601{
5f310425
KB		 6602 if (!ctrl_info->controller_online)
6603 return;
6604
376fb880 6605 ctrl_info->controller_online = false;
5f310425
KB		 6606 ctrl_info->pqi_mode_enabled = false;
6607 pqi_ctrl_block_requests(ctrl_info);
5a259e32
KB		 6608 if (!pqi_disable_ctrl_shutdown)
6609 sis_shutdown_ctrl(ctrl_info);
376fb880
KB		 6610 pci_disable_device(ctrl_info->pci_dev);
6611 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
5f310425 6612 schedule_work(&ctrl_info->ctrl_offline_work);
376fb880
KB		 6613}
6614
d91d7820 6615static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
6c223761
KB		 6616 const struct pci_device_id *id)
6617{
6618 char *ctrl_description;
6619
37b36847 6620 if (id->driver_data)
6c223761 6621 ctrl_description = (char *)id->driver_data;
37b36847
KB		 6622 else
6623 ctrl_description = "Microsemi Smart Family Controller";
6c223761 6624
d91d7820 6625 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
6c223761
KB		 6626}
6627
d91d7820
KB		 6628static int pqi_pci_probe(struct pci_dev *pci_dev,
6629 const struct pci_device_id *id)
6c223761
KB		 6630{
6631 int rc;
6632 int node;
6633 struct pqi_ctrl_info *ctrl_info;
6634
d91d7820 6635 pqi_print_ctrl_info(pci_dev, id);
6c223761
KB		 6636
6637 if (pqi_disable_device_id_wildcards &&
6638 id->subvendor == PCI_ANY_ID &&
6639 id->subdevice == PCI_ANY_ID) {
d91d7820 6640 dev_warn(&pci_dev->dev,
6c223761
KB		 6641 "controller not probed because device ID wildcards are disabled\n");
6642 return -ENODEV;
6643 }
6644
6645 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
d91d7820 6646 dev_warn(&pci_dev->dev,
6c223761
KB		 6647 "controller device ID matched using wildcards\n");
6648
d91d7820 6649 node = dev_to_node(&pci_dev->dev);
6c223761 6650 if (node == NUMA_NO_NODE)
d91d7820 6651 set_dev_node(&pci_dev->dev, 0);
6c223761
KB		 6652
6653 ctrl_info = pqi_alloc_ctrl_info(node);
6654 if (!ctrl_info) {
d91d7820 6655 dev_err(&pci_dev->dev,
6c223761
KB		 6656 "failed to allocate controller info block\n");
6657 return -ENOMEM;
6658 }
6659
d91d7820 6660 ctrl_info->pci_dev = pci_dev;
6c223761
KB		 6661
6662 rc = pqi_pci_init(ctrl_info);
6663 if (rc)
6664 goto error;
6665
6666 rc = pqi_ctrl_init(ctrl_info);
6667 if (rc)
6668 goto error;
6669
6670 return 0;
6671
6672error:
6673 pqi_remove_ctrl(ctrl_info);
6674
6675 return rc;
6676}
6677
d91d7820 6678static void pqi_pci_remove(struct pci_dev *pci_dev)
6c223761
KB		 6679{
6680 struct pqi_ctrl_info *ctrl_info;
6681
d91d7820 6682 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 6683 if (!ctrl_info)
6684 return;
6685
6686 pqi_remove_ctrl(ctrl_info);
6687}
6688
d91d7820 6689static void pqi_shutdown(struct pci_dev *pci_dev)
6c223761
KB		 6690{
6691 int rc;
6692 struct pqi_ctrl_info *ctrl_info;
6693
d91d7820 6694 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 6695 if (!ctrl_info)
6696 goto error;
6697
6698 /*
6699 * Write all data in the controller's battery-backed cache to
6700 * storage.
6701 */
58322fe0 6702 rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
b6d47811 6703 pqi_reset(ctrl_info);
6c223761
KB		 6704 if (rc == 0)
6705 return;
6706
6707error:
d91d7820 6708 dev_warn(&pci_dev->dev,
6c223761
KB		 6709 "unable to flush controller cache\n");
6710}
6711
3c50976f
KB		 6712static void pqi_process_lockup_action_param(void)
6713{
6714 unsigned int i;
6715
6716 if (!pqi_lockup_action_param)
6717 return;
6718
6719 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6720 if (strcmp(pqi_lockup_action_param,
6721 pqi_lockup_actions[i].name) == 0) {
6722 pqi_lockup_action = pqi_lockup_actions[i].action;
6723 return;
6724 }
6725 }
6726
6727 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
6728 DRIVER_NAME_SHORT, pqi_lockup_action_param);
6729}
6730
6731static void pqi_process_module_params(void)
6732{
6733 pqi_process_lockup_action_param();
6734}
6735
5c146686 6736static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
061ef06a
KB		 6737{
6738 struct pqi_ctrl_info *ctrl_info;
6739
6740 ctrl_info = pci_get_drvdata(pci_dev);
6741
6742 pqi_disable_events(ctrl_info);
6743 pqi_cancel_update_time_worker(ctrl_info);
6744 pqi_cancel_rescan_worker(ctrl_info);
6745 pqi_wait_until_scan_finished(ctrl_info);
6746 pqi_wait_until_lun_reset_finished(ctrl_info);
58322fe0 6747 pqi_flush_cache(ctrl_info, SUSPEND);
061ef06a
KB		 6748 pqi_ctrl_block_requests(ctrl_info);
6749 pqi_ctrl_wait_until_quiesced(ctrl_info);
6750 pqi_wait_until_inbound_queues_empty(ctrl_info);
6751 pqi_ctrl_wait_for_pending_io(ctrl_info);
6752 pqi_stop_heartbeat_timer(ctrl_info);
6753
6754 if (state.event == PM_EVENT_FREEZE)
6755 return 0;
6756
6757 pci_save_state(pci_dev);
6758 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
6759
6760 ctrl_info->controller_online = false;
6761 ctrl_info->pqi_mode_enabled = false;
6762
6763 return 0;
6764}
6765
5c146686 6766static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
061ef06a
KB		 6767{
6768 int rc;
6769 struct pqi_ctrl_info *ctrl_info;
6770
6771 ctrl_info = pci_get_drvdata(pci_dev);
6772
6773 if (pci_dev->current_state != PCI_D0) {
6774 ctrl_info->max_hw_queue_index = 0;
6775 pqi_free_interrupts(ctrl_info);
6776 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
6777 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
6778 IRQF_SHARED, DRIVER_NAME_SHORT,
6779 &ctrl_info->queue_groups[0]);
6780 if (rc) {
6781 dev_err(&ctrl_info->pci_dev->dev,
6782 "irq %u init failed with error %d\n",
6783 pci_dev->irq, rc);
6784 return rc;
6785 }
6786 pqi_start_heartbeat_timer(ctrl_info);
6787 pqi_ctrl_unblock_requests(ctrl_info);
6788 return 0;
6789 }
6790
6791 pci_set_power_state(pci_dev, PCI_D0);
6792 pci_restore_state(pci_dev);
6793
6794 return pqi_ctrl_init_resume(ctrl_info);
6795}
6796
6c223761
KB		 6797/* Define the PCI IDs for the controllers that we support. */
6798static const struct pci_device_id pqi_pci_id_table[] = {
7eddabff
KB		 6799 {
6800 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6801 0x152d, 0x8a22)
6802 },
6803 {
6804 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6805 0x152d, 0x8a23)
6806 },
6807 {
6808 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6809 0x152d, 0x8a24)
6810 },
6811 {
6812 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6813 0x152d, 0x8a36)
6814 },
6815 {
6816 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6817 0x152d, 0x8a37)
6818 },
6c223761
KB		 6819 {
6820 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6821 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
6822 },
6823 {
6824 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 6825 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
6c223761
KB		 6826 },
6827 {
6828 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6829 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
6c223761
KB		 6830 },
6831 {
6832 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6833 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
6c223761
KB		 6834 },
6835 {
6836 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6837 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
6c223761
KB		 6838 },
6839 {
6840 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6841 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
6c223761
KB		 6842 },
6843 {
6844 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6845 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
6c223761
KB		 6846 },
6847 {
6848 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6849 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
6c223761
KB		 6850 },
6851 {
6852 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6853 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
6c223761 6854 },
55790064
KB		 6855 {
6856 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6857 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
6858 },
6c223761
KB		 6859 {
6860 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6861 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
6c223761
KB		 6862 },
6863 {
6864 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6865 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
6c223761
KB		 6866 },
6867 {
6868 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6869 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
6c223761
KB		 6870 },
6871 {
6872 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6873 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
6c223761
KB		 6874 },
6875 {
6876 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6877 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
6c223761
KB		 6878 },
6879 {
6880 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6881 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
6c223761
KB		 6882 },
6883 {
6884 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6885 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
6c223761
KB		 6886 },
6887 {
6888 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6889 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
6c223761
KB		 6890 },
6891 {
6892 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6893 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
6c223761 6894 },
55790064
KB		 6895 {
6896 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6897 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
6898 },
6c223761
KB		 6899 {
6900 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6901 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
6c223761
KB		 6902 },
6903 {
6904 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6905 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
6c223761
KB		 6906 },
6907 {
6908 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6909 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
6c223761
KB		 6910 },
6911 {
6912 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6913 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
6c223761
KB		 6914 },
6915 {
6916 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6917 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
6c223761
KB		 6918 },
6919 {
6920 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6921 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
6c223761
KB		 6922 },
6923 {
6924 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6925 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
6c223761 6926 },
bd809e8d
KB		 6927 {
6928 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6929 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
6930 },
6931 {
6932 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6933 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
6934 },
6c223761
KB		 6935 {
6936 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff
KB		 6937 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
6938 },
55790064
KB		 6939 {
6940 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6941 PCI_VENDOR_ID_DELL, 0x1fe0)
6942 },
7eddabff
KB		 6943 {
6944 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6945 PCI_VENDOR_ID_HP, 0x0600)
6946 },
6947 {
6948 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6949 PCI_VENDOR_ID_HP, 0x0601)
6950 },
6951 {
6952 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6953 PCI_VENDOR_ID_HP, 0x0602)
6954 },
6955 {
6956 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6957 PCI_VENDOR_ID_HP, 0x0603)
6958 },
6959 {
6960 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 6961 PCI_VENDOR_ID_HP, 0x0609)
7eddabff
KB		 6962 },
6963 {
6964 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6965 PCI_VENDOR_ID_HP, 0x0650)
6966 },
6967 {
6968 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6969 PCI_VENDOR_ID_HP, 0x0651)
6970 },
6971 {
6972 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6973 PCI_VENDOR_ID_HP, 0x0652)
6974 },
6975 {
6976 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6977 PCI_VENDOR_ID_HP, 0x0653)
6978 },
6979 {
6980 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6981 PCI_VENDOR_ID_HP, 0x0654)
6982 },
6983 {
6984 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6985 PCI_VENDOR_ID_HP, 0x0655)
6986 },
7eddabff
KB		 6987 {
6988 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6989 PCI_VENDOR_ID_HP, 0x0700)
6990 },
6991 {
6992 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6993 PCI_VENDOR_ID_HP, 0x0701)
6c223761
KB		 6994 },
6995 {
6996 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6997 PCI_VENDOR_ID_HP, 0x1001)
6998 },
6999 {
7000 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7001 PCI_VENDOR_ID_HP, 0x1100)
7002 },
7003 {
7004 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7005 PCI_VENDOR_ID_HP, 0x1101)
7006 },
6c223761
KB		 7007 {
7008 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7009 PCI_ANY_ID, PCI_ANY_ID)
7010 },
7011 { 0 }
7012};
7013
7014MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
7015
7016static struct pci_driver pqi_pci_driver = {
7017 .name = DRIVER_NAME_SHORT,
7018 .id_table = pqi_pci_id_table,
7019 .probe = pqi_pci_probe,
7020 .remove = pqi_pci_remove,
7021 .shutdown = pqi_shutdown,
061ef06a
KB		 7022#if defined(CONFIG_PM)
7023 .suspend = pqi_suspend,
7024 .resume = pqi_resume,
7025#endif
6c223761
KB		 7026};
7027
7028static int __init pqi_init(void)
7029{
7030 int rc;
7031
7032 pr_info(DRIVER_NAME "\n");
7033
7034 pqi_sas_transport_template =
7035 sas_attach_transport(&pqi_sas_transport_functions);
7036 if (!pqi_sas_transport_template)
7037 return -ENODEV;
7038
3c50976f
KB		 7039 pqi_process_module_params();
7040
6c223761
KB		 7041 rc = pci_register_driver(&pqi_pci_driver);
7042 if (rc)
7043 sas_release_transport(pqi_sas_transport_template);
7044
7045 return rc;
7046}
7047
7048static void __exit pqi_cleanup(void)
7049{
7050 pci_unregister_driver(&pqi_pci_driver);
7051 sas_release_transport(pqi_sas_transport_template);
7052}
7053
7054module_init(pqi_init);
7055module_exit(pqi_cleanup);
7056
7057static void __attribute__((unused)) verify_structures(void)
7058{
7059 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7060 sis_host_to_ctrl_doorbell) != 0x20);
7061 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7062 sis_interrupt_mask) != 0x34);
7063 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7064 sis_ctrl_to_host_doorbell) != 0x9c);
7065 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7066 sis_ctrl_to_host_doorbell_clear) != 0xa0);
ff6abb73
KB		 7067 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7068 sis_driver_scratch) != 0xb0);
6c223761
KB		 7069 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7070 sis_firmware_status) != 0xbc);
7071 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7072 sis_mailbox) != 0x1000);
7073 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7074 pqi_registers) != 0x4000);
7075
7076 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7077 iu_type) != 0x0);
7078 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7079 iu_length) != 0x2);
7080 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7081 response_queue_id) != 0x4);
7082 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7083 work_area) != 0x6);
7084 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
7085
7086 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7087 status) != 0x0);
7088 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7089 service_response) != 0x1);
7090 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7091 data_present) != 0x2);
7092 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7093 reserved) != 0x3);
7094 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7095 residual_count) != 0x4);
7096 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7097 data_length) != 0x8);
7098 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7099 reserved1) != 0xa);
7100 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7101 data) != 0xc);
7102 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
7103
7104 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7105 data_in_result) != 0x0);
7106 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7107 data_out_result) != 0x1);
7108 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7109 reserved) != 0x2);
7110 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7111 status) != 0x5);
7112 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7113 status_qualifier) != 0x6);
7114 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7115 sense_data_length) != 0x8);
7116 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7117 response_data_length) != 0xa);
7118 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7119 data_in_transferred) != 0xc);
7120 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7121 data_out_transferred) != 0x10);
7122 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7123 data) != 0x14);
7124 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
7125
7126 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7127 signature) != 0x0);
7128 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7129 function_and_status_code) != 0x8);
7130 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7131 max_admin_iq_elements) != 0x10);
7132 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7133 max_admin_oq_elements) != 0x11);
7134 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7135 admin_iq_element_length) != 0x12);
7136 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7137 admin_oq_element_length) != 0x13);
7138 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7139 max_reset_timeout) != 0x14);
7140 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7141 legacy_intx_status) != 0x18);
7142 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7143 legacy_intx_mask_set) != 0x1c);
7144 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7145 legacy_intx_mask_clear) != 0x20);
7146 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7147 device_status) != 0x40);
7148 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7149 admin_iq_pi_offset) != 0x48);
7150 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7151 admin_oq_ci_offset) != 0x50);
7152 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7153 admin_iq_element_array_addr) != 0x58);
7154 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7155 admin_oq_element_array_addr) != 0x60);
7156 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7157 admin_iq_ci_addr) != 0x68);
7158 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7159 admin_oq_pi_addr) != 0x70);
7160 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7161 admin_iq_num_elements) != 0x78);
7162 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7163 admin_oq_num_elements) != 0x79);
7164 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7165 admin_queue_int_msg_num) != 0x7a);
7166 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7167 device_error) != 0x80);
7168 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7169 error_details) != 0x88);
7170 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7171 device_reset) != 0x90);
7172 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7173 power_action) != 0x94);
7174 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
7175
7176 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7177 header.iu_type) != 0);
7178 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7179 header.iu_length) != 2);
7180 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7181 header.work_area) != 6);
7182 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7183 request_id) != 8);
7184 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7185 function_code) != 10);
7186 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7187 data.report_device_capability.buffer_length) != 44);
7188 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7189 data.report_device_capability.sg_descriptor) != 48);
7190 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7191 data.create_operational_iq.queue_id) != 12);
7192 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7193 data.create_operational_iq.element_array_addr) != 16);
7194 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7195 data.create_operational_iq.ci_addr) != 24);
7196 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7197 data.create_operational_iq.num_elements) != 32);
7198 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7199 data.create_operational_iq.element_length) != 34);
7200 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7201 data.create_operational_iq.queue_protocol) != 36);
7202 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7203 data.create_operational_oq.queue_id) != 12);
7204 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7205 data.create_operational_oq.element_array_addr) != 16);
7206 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7207 data.create_operational_oq.pi_addr) != 24);
7208 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7209 data.create_operational_oq.num_elements) != 32);
7210 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7211 data.create_operational_oq.element_length) != 34);
7212 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7213 data.create_operational_oq.queue_protocol) != 36);
7214 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7215 data.create_operational_oq.int_msg_num) != 40);
7216 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7217 data.create_operational_oq.coalescing_count) != 42);
7218 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7219 data.create_operational_oq.min_coalescing_time) != 44);
7220 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7221 data.create_operational_oq.max_coalescing_time) != 48);
7222 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7223 data.delete_operational_queue.queue_id) != 12);
7224 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
7225 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7226 data.create_operational_iq) != 64 - 11);
7227 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7228 data.create_operational_oq) != 64 - 11);
7229 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7230 data.delete_operational_queue) != 64 - 11);
7231
7232 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7233 header.iu_type) != 0);
7234 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7235 header.iu_length) != 2);
7236 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7237 header.work_area) != 6);
7238 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7239 request_id) != 8);
7240 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7241 function_code) != 10);
7242 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7243 status) != 11);
7244 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7245 data.create_operational_iq.status_descriptor) != 12);
7246 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7247 data.create_operational_iq.iq_pi_offset) != 16);
7248 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7249 data.create_operational_oq.status_descriptor) != 12);
7250 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7251 data.create_operational_oq.oq_ci_offset) != 16);
7252 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
7253
7254 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7255 header.iu_type) != 0);
7256 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7257 header.iu_length) != 2);
7258 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7259 header.response_queue_id) != 4);
7260 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7261 header.work_area) != 6);
7262 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7263 request_id) != 8);
7264 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7265 nexus_id) != 10);
7266 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7267 buffer_length) != 12);
7268 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7269 lun_number) != 16);
7270 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7271 protocol_specific) != 24);
7272 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7273 error_index) != 27);
7274 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7275 cdb) != 32);
7276 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7277 sg_descriptors) != 64);
7278 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
7279 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
7280
7281 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7282 header.iu_type) != 0);
7283 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7284 header.iu_length) != 2);
7285 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7286 header.response_queue_id) != 4);
7287 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7288 header.work_area) != 6);
7289 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7290 request_id) != 8);
7291 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7292 nexus_id) != 12);
7293 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7294 buffer_length) != 16);
7295 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7296 data_encryption_key_index) != 22);
7297 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7298 encrypt_tweak_lower) != 24);
7299 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7300 encrypt_tweak_upper) != 28);
7301 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7302 cdb) != 32);
7303 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7304 error_index) != 48);
7305 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7306 num_sg_descriptors) != 50);
7307 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7308 cdb_length) != 51);
7309 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7310 lun_number) != 52);
7311 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7312 sg_descriptors) != 64);
7313 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
7314 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
7315
7316 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7317 header.iu_type) != 0);
7318 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7319 header.iu_length) != 2);
7320 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7321 request_id) != 8);
7322 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7323 error_index) != 10);
7324
7325 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7326 header.iu_type) != 0);
7327 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7328 header.iu_length) != 2);
7329 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7330 header.response_queue_id) != 4);
7331 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7332 request_id) != 8);
7333 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7334 data.report_event_configuration.buffer_length) != 12);
7335 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7336 data.report_event_configuration.sg_descriptors) != 16);
7337 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7338 data.set_event_configuration.global_event_oq_id) != 10);
7339 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7340 data.set_event_configuration.buffer_length) != 12);
7341 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7342 data.set_event_configuration.sg_descriptors) != 16);
7343
7344 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
7345 max_inbound_iu_length) != 6);
7346 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
7347 max_outbound_iu_length) != 14);
7348 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
7349
7350 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7351 data_length) != 0);
7352 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7353 iq_arbitration_priority_support_bitmask) != 8);
7354 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7355 maximum_aw_a) != 9);
7356 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7357 maximum_aw_b) != 10);
7358 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7359 maximum_aw_c) != 11);
7360 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7361 max_inbound_queues) != 16);
7362 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7363 max_elements_per_iq) != 18);
7364 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7365 max_iq_element_length) != 24);
7366 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7367 min_iq_element_length) != 26);
7368 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7369 max_outbound_queues) != 30);
7370 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7371 max_elements_per_oq) != 32);
7372 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7373 intr_coalescing_time_granularity) != 34);
7374 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7375 max_oq_element_length) != 36);
7376 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7377 min_oq_element_length) != 38);
7378 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7379 iu_layer_descriptors) != 64);
7380 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
7381
7382 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
7383 event_type) != 0);
7384 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
7385 oq_id) != 2);
7386 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
7387
7388 BUILD_BUG_ON(offsetof(struct pqi_event_config,
7389 num_event_descriptors) != 2);
7390 BUILD_BUG_ON(offsetof(struct pqi_event_config,
7391 descriptors) != 4);
7392
061ef06a
KB		 7393 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
7394 ARRAY_SIZE(pqi_supported_event_types));
7395
6c223761
KB		 7396 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7397 header.iu_type) != 0);
7398 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7399 header.iu_length) != 2);
7400 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7401 event_type) != 8);
7402 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7403 event_id) != 10);
7404 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7405 additional_event_id) != 12);
7406 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7407 data) != 16);
7408 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
7409
7410 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7411 header.iu_type) != 0);
7412 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7413 header.iu_length) != 2);
7414 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7415 event_type) != 8);
7416 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7417 event_id) != 10);
7418 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7419 additional_event_id) != 12);
7420 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
7421
7422 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7423 header.iu_type) != 0);
7424 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7425 header.iu_length) != 2);
7426 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7427 request_id) != 8);
7428 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7429 nexus_id) != 10);
7430 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7431 lun_number) != 16);
7432 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7433 protocol_specific) != 24);
7434 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7435 outbound_queue_id_to_manage) != 26);
7436 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7437 request_id_to_manage) != 28);
7438 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7439 task_management_function) != 30);
7440 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
7441
7442 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7443 header.iu_type) != 0);
7444 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7445 header.iu_length) != 2);
7446 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7447 request_id) != 8);
7448 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7449 nexus_id) != 10);
7450 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7451 additional_response_info) != 12);
7452 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7453 response_code) != 15);
7454 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
7455
7456 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7457 configured_logical_drive_count) != 0);
7458 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7459 configuration_signature) != 1);
7460 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7461 firmware_version) != 5);
7462 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7463 extended_logical_unit_count) != 154);
7464 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7465 firmware_build_number) != 190);
7466 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7467 controller_mode) != 292);
7468
1be42f46
KB		 7469 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7470 phys_bay_in_box) != 115);
7471 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7472 device_type) != 120);
7473 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7474 redundant_path_present_map) != 1736);
7475 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7476 active_path_number) != 1738);
7477 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7478 alternate_paths_phys_connector) != 1739);
7479 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7480 alternate_paths_phys_box_on_port) != 1755);
7481 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7482 current_queue_depth_limit) != 1796);
7483 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
7484
6c223761
KB		 7485 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
7486 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
7487 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
7488 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7489 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
7490 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7491 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
7492 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
7493 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7494 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
7495 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
7496 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7497
7498 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
d727a776
KB		 7499 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
7500 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
6c223761 7501}
Linux 6.x block layer and io_uring tree(s)