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scsi: smartpqi: Update logical volume size after expansion
[linux-2.6-block.git] / drivers / scsi / smartpqi / smartpqi_init.c
CommitLineData
2cc37b15 1// SPDX-License-Identifier: GPL-2.0
6c223761
KB		 2/*
3 * driver for Microsemi PQI-based storage controllers
2f4c4b92
DB		 4 * Copyright (c) 2019 Microchip Technology Inc. and its subsidiaries
5 * Copyright (c) 2016-2018 Microsemi Corporation
6c223761
KB		 6 * Copyright (c) 2016 PMC-Sierra, Inc.
7 *
2f4c4b92 8 * Questions/Comments/Bugfixes to storagedev@microchip.com
6c223761
KB		 9 *
10 */
11
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/pci.h>
15#include <linux/delay.h>
16#include <linux/interrupt.h>
17#include <linux/sched.h>
18#include <linux/rtc.h>
19#include <linux/bcd.h>
3c50976f 20#include <linux/reboot.h>
6c223761 21#include <linux/cciss_ioctl.h>
52198226 22#include <linux/blk-mq-pci.h>
6c223761
KB		 23#include <scsi/scsi_host.h>
24#include <scsi/scsi_cmnd.h>
25#include <scsi/scsi_device.h>
26#include <scsi/scsi_eh.h>
27#include <scsi/scsi_transport_sas.h>
28#include <asm/unaligned.h>
29#include "smartpqi.h"
30#include "smartpqi_sis.h"
31
32#if !defined(BUILD_TIMESTAMP)
33#define BUILD_TIMESTAMP
34#endif
35
390e2808 36#define DRIVER_VERSION "1.2.10-025"
2d154f5f 37#define DRIVER_MAJOR 1
f7cb8ac6 38#define DRIVER_MINOR 2
390e2808
DB		 39#define DRIVER_RELEASE 10
40#define DRIVER_REVISION 25
6c223761 41
2d154f5f
KB		 42#define DRIVER_NAME "Microsemi PQI Driver (v" \
43 DRIVER_VERSION BUILD_TIMESTAMP ")"
6c223761
KB		 44#define DRIVER_NAME_SHORT "smartpqi"
45
e1d213bd
KB		 46#define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor))
47
6c223761
KB		 48MODULE_AUTHOR("Microsemi");
49MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version "
50 DRIVER_VERSION);
51MODULE_SUPPORTED_DEVICE("Microsemi Smart Family Controllers");
52MODULE_VERSION(DRIVER_VERSION);
53MODULE_LICENSE("GPL");
54
6c223761 55static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info);
5f310425 56static void pqi_ctrl_offline_worker(struct work_struct *work);
376fb880 57static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info);
6c223761
KB		 58static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
59static void pqi_scan_start(struct Scsi_Host *shost);
60static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
61 struct pqi_queue_group *queue_group, enum pqi_io_path path,
62 struct pqi_io_request *io_request);
63static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
64 struct pqi_iu_header *request, unsigned int flags,
65 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs);
66static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
67 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
68 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 69 struct pqi_encryption_info *encryption_info, bool raid_bypass);
4fd22c13
MR		 70static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info);
71static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info);
72static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info);
73static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
74 u32 bytes_requested);
75static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info);
76static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info);
1e46731e
MR		 77static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
78 struct pqi_scsi_dev *device, unsigned long timeout_secs);
6c223761
KB		 79
80/* for flags argument to pqi_submit_raid_request_synchronous() */
81#define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
82
83static struct scsi_transport_template *pqi_sas_transport_template;
84
85static atomic_t pqi_controller_count = ATOMIC_INIT(0);
86
3c50976f
KB		 87enum pqi_lockup_action {
88 NONE,
89 REBOOT,
90 PANIC
91};
92
93static enum pqi_lockup_action pqi_lockup_action = NONE;
94
95static struct {
96 enum pqi_lockup_action action;
97 char *name;
98} pqi_lockup_actions[] = {
99 {
100 .action = NONE,
101 .name = "none",
102 },
103 {
104 .action = REBOOT,
105 .name = "reboot",
106 },
107 {
108 .action = PANIC,
109 .name = "panic",
110 },
111};
112
6a50d6ad
KB		 113static unsigned int pqi_supported_event_types[] = {
114 PQI_EVENT_TYPE_HOTPLUG,
115 PQI_EVENT_TYPE_HARDWARE,
116 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
117 PQI_EVENT_TYPE_LOGICAL_DEVICE,
4fd22c13 118 PQI_EVENT_TYPE_OFA,
6a50d6ad
KB		 119 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
120 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
121};
122
6c223761
KB		 123static int pqi_disable_device_id_wildcards;
124module_param_named(disable_device_id_wildcards,
cbe0c7b1 125 pqi_disable_device_id_wildcards, int, 0644);
6c223761
KB		 126MODULE_PARM_DESC(disable_device_id_wildcards,
127 "Disable device ID wildcards.");
128
5a259e32
KB		 129static int pqi_disable_heartbeat;
130module_param_named(disable_heartbeat,
131 pqi_disable_heartbeat, int, 0644);
132MODULE_PARM_DESC(disable_heartbeat,
133 "Disable heartbeat.");
134
135static int pqi_disable_ctrl_shutdown;
136module_param_named(disable_ctrl_shutdown,
137 pqi_disable_ctrl_shutdown, int, 0644);
138MODULE_PARM_DESC(disable_ctrl_shutdown,
139 "Disable controller shutdown when controller locked up.");
140
3c50976f
KB		 141static char *pqi_lockup_action_param;
142module_param_named(lockup_action,
143 pqi_lockup_action_param, charp, 0644);
144MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
145 "\t\tSupported: none, reboot, panic\n"
146 "\t\tDefault: none");
147
5e6a9760
GW		 148static int pqi_expose_ld_first;
149module_param_named(expose_ld_first,
150 pqi_expose_ld_first, int, 0644);
151MODULE_PARM_DESC(expose_ld_first,
152 "Expose logical drives before physical drives.");
153
522bc026
DC		 154static int pqi_hide_vsep;
155module_param_named(hide_vsep,
156 pqi_hide_vsep, int, 0644);
157MODULE_PARM_DESC(hide_vsep,
158 "Hide the virtual SEP for direct attached drives.");
159
6c223761
KB		 160static char *raid_levels[] = {
161 "RAID-0",
162 "RAID-4",
163 "RAID-1(1+0)",
164 "RAID-5",
165 "RAID-5+1",
166 "RAID-ADG",
167 "RAID-1(ADM)",
168};
169
170static char *pqi_raid_level_to_string(u8 raid_level)
171{
172 if (raid_level < ARRAY_SIZE(raid_levels))
173 return raid_levels[raid_level];
174
a9f93392 175 return "RAID UNKNOWN";
6c223761
KB		 176}
177
178#define SA_RAID_0 0
179#define SA_RAID_4 1
180#define SA_RAID_1 2 /* also used for RAID 10 */
181#define SA_RAID_5 3 /* also used for RAID 50 */
182#define SA_RAID_51 4
183#define SA_RAID_6 5 /* also used for RAID 60 */
184#define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
185#define SA_RAID_MAX SA_RAID_ADM
186#define SA_RAID_UNKNOWN 0xff
187
188static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
189{
7561a7e4 190 pqi_prep_for_scsi_done(scmd);
6c223761
KB		 191 scmd->scsi_done(scmd);
192}
193
b6e2ef67 194static inline void pqi_disable_write_same(struct scsi_device *sdev)
6c223761 195{
b6e2ef67 196 sdev->no_write_same = 1;
6c223761
KB		 197}
198
6c223761 199static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
6c223761 200{
6c223761 201 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
6c223761
KB		 202}
203
204static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
205{
206 return !device->is_physical_device;
207}
208
bd10cf0b
KB		 209static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
210{
211 return scsi3addr[2] != 0;
212}
213
694c5d5b
KB		 214static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
215{
216 return !ctrl_info->controller_online;
217}
218
6c223761
KB		 219static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
220{
221 if (ctrl_info->controller_online)
222 if (!sis_is_firmware_running(ctrl_info))
223 pqi_take_ctrl_offline(ctrl_info);
224}
225
226static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
227{
228 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
229}
230
ff6abb73
KB		 231static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
232 struct pqi_ctrl_info *ctrl_info)
233{
234 return sis_read_driver_scratch(ctrl_info);
235}
236
237static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
238 enum pqi_ctrl_mode mode)
239{
240 sis_write_driver_scratch(ctrl_info, mode);
241}
242
694c5d5b
KB		 243static inline void pqi_ctrl_block_device_reset(struct pqi_ctrl_info *ctrl_info)
244{
245 ctrl_info->block_device_reset = true;
246}
247
248static inline bool pqi_device_reset_blocked(struct pqi_ctrl_info *ctrl_info)
249{
250 return ctrl_info->block_device_reset;
251}
252
253static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
254{
255 return ctrl_info->block_requests;
256}
257
7561a7e4
KB		 258static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
259{
260 ctrl_info->block_requests = true;
261 scsi_block_requests(ctrl_info->scsi_host);
262}
263
264static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
265{
266 ctrl_info->block_requests = false;
267 wake_up_all(&ctrl_info->block_requests_wait);
376fb880 268 pqi_retry_raid_bypass_requests(ctrl_info);
7561a7e4
KB		 269 scsi_unblock_requests(ctrl_info->scsi_host);
270}
271
7561a7e4
KB		 272static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
273 unsigned long timeout_msecs)
274{
275 unsigned long remaining_msecs;
276
277 if (!pqi_ctrl_blocked(ctrl_info))
278 return timeout_msecs;
279
280 atomic_inc(&ctrl_info->num_blocked_threads);
281
282 if (timeout_msecs == NO_TIMEOUT) {
283 wait_event(ctrl_info->block_requests_wait,
284 !pqi_ctrl_blocked(ctrl_info));
285 remaining_msecs = timeout_msecs;
286 } else {
287 unsigned long remaining_jiffies;
288
289 remaining_jiffies =
290 wait_event_timeout(ctrl_info->block_requests_wait,
291 !pqi_ctrl_blocked(ctrl_info),
292 msecs_to_jiffies(timeout_msecs));
293 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
294 }
295
296 atomic_dec(&ctrl_info->num_blocked_threads);
297
298 return remaining_msecs;
299}
300
7561a7e4
KB		 301static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
302{
303 while (atomic_read(&ctrl_info->num_busy_threads) >
304 atomic_read(&ctrl_info->num_blocked_threads))
305 usleep_range(1000, 2000);
306}
307
03b288cf
KB		 308static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
309{
310 return device->device_offline;
311}
312
7561a7e4
KB		 313static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
314{
315 device->in_reset = true;
316}
317
318static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
319{
320 device->in_reset = false;
321}
322
323static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
324{
325 return device->in_reset;
326}
6c223761 327
4fd22c13
MR		 328static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info)
329{
330 ctrl_info->in_ofa = true;
331}
332
333static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info)
334{
335 ctrl_info->in_ofa = false;
336}
337
338static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info)
339{
340 return ctrl_info->in_ofa;
341}
342
1e46731e
MR		 343static inline void pqi_device_remove_start(struct pqi_scsi_dev *device)
344{
345 device->in_remove = true;
346}
347
348static inline bool pqi_device_in_remove(struct pqi_ctrl_info *ctrl_info,
349 struct pqi_scsi_dev *device)
350{
12de280b 351 return device->in_remove && !ctrl_info->in_shutdown;
1e46731e
MR		 352}
353
0530736e
KB		 354static inline void pqi_ctrl_shutdown_start(struct pqi_ctrl_info *ctrl_info)
355{
356 ctrl_info->in_shutdown = true;
357}
358
359static inline bool pqi_ctrl_in_shutdown(struct pqi_ctrl_info *ctrl_info)
360{
361 return ctrl_info->in_shutdown;
362}
363
5f310425
KB		 364static inline void pqi_schedule_rescan_worker_with_delay(
365 struct pqi_ctrl_info *ctrl_info, unsigned long delay)
366{
367 if (pqi_ctrl_offline(ctrl_info))
368 return;
4fd22c13
MR		 369 if (pqi_ctrl_in_ofa(ctrl_info))
370 return;
5f310425
KB		 371
372 schedule_delayed_work(&ctrl_info->rescan_work, delay);
373}
374
6c223761
KB		 375static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
376{
5f310425
KB		 377 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
378}
379
4fd22c13 380#define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ)
5f310425
KB		 381
382static inline void pqi_schedule_rescan_worker_delayed(
383 struct pqi_ctrl_info *ctrl_info)
384{
385 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
6c223761
KB		 386}
387
061ef06a
KB		 388static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
389{
390 cancel_delayed_work_sync(&ctrl_info->rescan_work);
391}
392
0530736e
KB		 393static inline void pqi_cancel_event_worker(struct pqi_ctrl_info *ctrl_info)
394{
395 cancel_work_sync(&ctrl_info->event_work);
396}
397
98f87667
KB		 398static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
399{
400 if (!ctrl_info->heartbeat_counter)
401 return 0;
402
403 return readl(ctrl_info->heartbeat_counter);
404}
405
4fd22c13
MR		 406static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
407{
408 if (!ctrl_info->soft_reset_status)
409 return 0;
410
411 return readb(ctrl_info->soft_reset_status);
412}
413
414static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info,
694c5d5b 415 u8 clear)
4fd22c13
MR		 416{
417 u8 status;
418
419 if (!ctrl_info->soft_reset_status)
420 return;
421
422 status = pqi_read_soft_reset_status(ctrl_info);
423 status &= ~clear;
424 writeb(status, ctrl_info->soft_reset_status);
425}
426
6c223761
KB		 427static int pqi_map_single(struct pci_dev *pci_dev,
428 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
6917a9cc 429 size_t buffer_length, enum dma_data_direction data_direction)
6c223761
KB		 430{
431 dma_addr_t bus_address;
432
6917a9cc 433 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE)
6c223761
KB		 434 return 0;
435
6917a9cc 436 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length,
6c223761 437 data_direction);
6917a9cc 438 if (dma_mapping_error(&pci_dev->dev, bus_address))
6c223761
KB		 439 return -ENOMEM;
440
441 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
442 put_unaligned_le32(buffer_length, &sg_descriptor->length);
443 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
444
445 return 0;
446}
447
448static void pqi_pci_unmap(struct pci_dev *pci_dev,
449 struct pqi_sg_descriptor *descriptors, int num_descriptors,
6917a9cc 450 enum dma_data_direction data_direction)
6c223761
KB		 451{
452 int i;
453
6917a9cc 454 if (data_direction == DMA_NONE)
6c223761
KB		 455 return;
456
457 for (i = 0; i < num_descriptors; i++)
6917a9cc 458 dma_unmap_single(&pci_dev->dev,
6c223761
KB		 459 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
460 get_unaligned_le32(&descriptors[i].length),
461 data_direction);
462}
463
464static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
465 struct pqi_raid_path_request *request, u8 cmd,
466 u8 *scsi3addr, void *buffer, size_t buffer_length,
6917a9cc 467 u16 vpd_page, enum dma_data_direction *dir)
6c223761
KB		 468{
469 u8 *cdb;
171c2865 470 size_t cdb_length = buffer_length;
6c223761
KB		 471
472 memset(request, 0, sizeof(*request));
473
474 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
475 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
476 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
477 &request->header.iu_length);
478 put_unaligned_le32(buffer_length, &request->buffer_length);
479 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
480 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
481 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
482
483 cdb = request->cdb;
484
485 switch (cmd) {
486 case INQUIRY:
487 request->data_direction = SOP_READ_FLAG;
488 cdb[0] = INQUIRY;
489 if (vpd_page & VPD_PAGE) {
490 cdb[1] = 0x1;
491 cdb[2] = (u8)vpd_page;
492 }
171c2865 493 cdb[4] = (u8)cdb_length;
6c223761
KB		 494 break;
495 case CISS_REPORT_LOG:
496 case CISS_REPORT_PHYS:
497 request->data_direction = SOP_READ_FLAG;
498 cdb[0] = cmd;
499 if (cmd == CISS_REPORT_PHYS)
694c5d5b 500 cdb[1] = CISS_REPORT_PHYS_FLAG_OTHER;
6c223761 501 else
694c5d5b 502 cdb[1] = CISS_REPORT_LOG_FLAG_UNIQUE_LUN_ID;
171c2865 503 put_unaligned_be32(cdb_length, &cdb[6]);
6c223761
KB		 504 break;
505 case CISS_GET_RAID_MAP:
506 request->data_direction = SOP_READ_FLAG;
507 cdb[0] = CISS_READ;
508 cdb[1] = CISS_GET_RAID_MAP;
171c2865 509 put_unaligned_be32(cdb_length, &cdb[6]);
6c223761 510 break;
58322fe0 511 case SA_FLUSH_CACHE:
6c223761
KB		 512 request->data_direction = SOP_WRITE_FLAG;
513 cdb[0] = BMIC_WRITE;
58322fe0 514 cdb[6] = BMIC_FLUSH_CACHE;
171c2865 515 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 516 break;
171c2865
DC		 517 case BMIC_SENSE_DIAG_OPTIONS:
518 cdb_length = 0;
e52c9e07 519 /* fall through */
6c223761
KB		 520 case BMIC_IDENTIFY_CONTROLLER:
521 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6d90615f 522 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
6c223761
KB		 523 request->data_direction = SOP_READ_FLAG;
524 cdb[0] = BMIC_READ;
525 cdb[6] = cmd;
171c2865 526 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 527 break;
171c2865
DC		 528 case BMIC_SET_DIAG_OPTIONS:
529 cdb_length = 0;
e52c9e07 530 /* fall through */
6c223761
KB		 531 case BMIC_WRITE_HOST_WELLNESS:
532 request->data_direction = SOP_WRITE_FLAG;
533 cdb[0] = BMIC_WRITE;
534 cdb[6] = cmd;
171c2865 535 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 536 break;
3d46a59a
DB		 537 case BMIC_CSMI_PASSTHRU:
538 request->data_direction = SOP_BIDIRECTIONAL;
539 cdb[0] = BMIC_WRITE;
540 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU;
541 cdb[6] = cmd;
542 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761
KB		 543 break;
544 default:
545 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n",
546 cmd);
6c223761
KB		 547 break;
548 }
549
550 switch (request->data_direction) {
551 case SOP_READ_FLAG:
6917a9cc 552 *dir = DMA_FROM_DEVICE;
6c223761
KB		 553 break;
554 case SOP_WRITE_FLAG:
6917a9cc 555 *dir = DMA_TO_DEVICE;
6c223761
KB		 556 break;
557 case SOP_NO_DIRECTION_FLAG:
6917a9cc 558 *dir = DMA_NONE;
6c223761
KB		 559 break;
560 default:
6917a9cc 561 *dir = DMA_BIDIRECTIONAL;
6c223761
KB		 562 break;
563 }
564
6c223761 565 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
6917a9cc 566 buffer, buffer_length, *dir);
6c223761
KB		 567}
568
376fb880
KB		 569static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
570{
571 io_request->scmd = NULL;
572 io_request->status = 0;
573 io_request->error_info = NULL;
574 io_request->raid_bypass = false;
575}
576
6c223761
KB		 577static struct pqi_io_request *pqi_alloc_io_request(
578 struct pqi_ctrl_info *ctrl_info)
579{
580 struct pqi_io_request *io_request;
581 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
582
583 while (1) {
584 io_request = &ctrl_info->io_request_pool[i];
585 if (atomic_inc_return(&io_request->refcount) == 1)
586 break;
587 atomic_dec(&io_request->refcount);
588 i = (i + 1) % ctrl_info->max_io_slots;
589 }
590
591 /* benignly racy */
592 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
593
376fb880 594 pqi_reinit_io_request(io_request);
6c223761
KB		 595
596 return io_request;
597}
598
599static void pqi_free_io_request(struct pqi_io_request *io_request)
600{
601 atomic_dec(&io_request->refcount);
602}
603
02133b68 604static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
694c5d5b
KB		 605 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
606 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
6c223761
KB		 607{
608 int rc;
6c223761 609 struct pqi_raid_path_request request;
694c5d5b 610 enum dma_data_direction dir;
6c223761
KB		 611
612 rc = pqi_build_raid_path_request(ctrl_info, &request,
02133b68
DC		 613 cmd, scsi3addr, buffer,
614 buffer_length, vpd_page, &dir);
6c223761
KB		 615 if (rc)
616 return rc;
617
694c5d5b
KB		 618 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
619 error_info, timeout_msecs);
6c223761 620
6917a9cc 621 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
694c5d5b 622
6c223761
KB		 623 return rc;
624}
625
694c5d5b 626/* helper functions for pqi_send_scsi_raid_request */
02133b68
DC		 627
628static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
694c5d5b 629 u8 cmd, void *buffer, size_t buffer_length)
6c223761 630{
02133b68 631 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
694c5d5b 632 buffer, buffer_length, 0, NULL, NO_TIMEOUT);
02133b68 633}
6c223761 634
02133b68 635static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
694c5d5b
KB		 636 u8 cmd, void *buffer, size_t buffer_length,
637 struct pqi_raid_error_info *error_info)
02133b68
DC		 638{
639 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
694c5d5b 640 buffer, buffer_length, 0, error_info, NO_TIMEOUT);
02133b68 641}
6c223761 642
02133b68 643static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
694c5d5b 644 struct bmic_identify_controller *buffer)
02133b68
DC		 645{
646 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
694c5d5b 647 buffer, sizeof(*buffer));
02133b68
DC		 648}
649
6d90615f 650static inline int pqi_sense_subsystem_info(struct pqi_ctrl_info *ctrl_info,
694c5d5b 651 struct bmic_sense_subsystem_info *sense_info)
6d90615f
MB		 652{
653 return pqi_send_ctrl_raid_request(ctrl_info,
694c5d5b
KB		 654 BMIC_SENSE_SUBSYSTEM_INFORMATION, sense_info,
655 sizeof(*sense_info));
6d90615f
MB		 656}
657
02133b68 658static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
6c223761 659 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
02133b68
DC		 660{
661 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
662 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT);
6c223761
KB		 663}
664
665static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
666 struct pqi_scsi_dev *device,
694c5d5b 667 struct bmic_identify_physical_device *buffer, size_t buffer_length)
6c223761
KB		 668{
669 int rc;
6917a9cc 670 enum dma_data_direction dir;
6c223761
KB		 671 u16 bmic_device_index;
672 struct pqi_raid_path_request request;
673
674 rc = pqi_build_raid_path_request(ctrl_info, &request,
675 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
6917a9cc 676 buffer_length, 0, &dir);
6c223761
KB		 677 if (rc)
678 return rc;
679
680 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
681 request.cdb[2] = (u8)bmic_device_index;
682 request.cdb[9] = (u8)(bmic_device_index >> 8);
683
684 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
685 0, NULL, NO_TIMEOUT);
686
6917a9cc 687 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
694c5d5b 688
6c223761
KB		 689 return rc;
690}
691
58322fe0
KB		 692static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
693 enum bmic_flush_cache_shutdown_event shutdown_event)
6c223761
KB		 694{
695 int rc;
58322fe0 696 struct bmic_flush_cache *flush_cache;
6c223761
KB		 697
698 /*
699 * Don't bother trying to flush the cache if the controller is
700 * locked up.
701 */
702 if (pqi_ctrl_offline(ctrl_info))
703 return -ENXIO;
704
58322fe0
KB		 705 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
706 if (!flush_cache)
6c223761
KB		 707 return -ENOMEM;
708
58322fe0
KB		 709 flush_cache->shutdown_event = shutdown_event;
710
02133b68
DC		 711 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
712 sizeof(*flush_cache));
6c223761 713
58322fe0 714 kfree(flush_cache);
6c223761
KB		 715
716 return rc;
717}
718
3d46a59a
DB		 719int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info,
720 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length,
721 struct pqi_raid_error_info *error_info)
722{
723 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU,
724 buffer, buffer_length, error_info);
725}
171c2865 726
694c5d5b 727#define PQI_FETCH_PTRAID_DATA (1 << 31)
171c2865
DC		 728
729static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
6c223761
KB		 730{
731 int rc;
171c2865 732 struct bmic_diag_options *diag;
6c223761 733
171c2865
DC		 734 diag = kzalloc(sizeof(*diag), GFP_KERNEL);
735 if (!diag)
736 return -ENOMEM;
737
02133b68 738 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
694c5d5b 739 diag, sizeof(*diag));
6c223761 740 if (rc)
171c2865 741 goto out;
6c223761 742
171c2865
DC		 743 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
744
694c5d5b
KB		 745 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS, diag,
746 sizeof(*diag));
747
171c2865
DC		 748out:
749 kfree(diag);
6c223761 750
6c223761
KB		 751 return rc;
752}
753
02133b68 754static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 755 void *buffer, size_t buffer_length)
756{
02133b68 757 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
694c5d5b 758 buffer, buffer_length);
6c223761
KB		 759}
760
761#pragma pack(1)
762
763struct bmic_host_wellness_driver_version {
764 u8 start_tag[4];
765 u8 driver_version_tag[2];
766 __le16 driver_version_length;
767 char driver_version[32];
b2346b50 768 u8 dont_write_tag[2];
6c223761
KB		 769 u8 end_tag[2];
770};
771
772#pragma pack()
773
774static int pqi_write_driver_version_to_host_wellness(
775 struct pqi_ctrl_info *ctrl_info)
776{
777 int rc;
778 struct bmic_host_wellness_driver_version *buffer;
779 size_t buffer_length;
780
781 buffer_length = sizeof(*buffer);
782
783 buffer = kmalloc(buffer_length, GFP_KERNEL);
784 if (!buffer)
785 return -ENOMEM;
786
787 buffer->start_tag[0] = '<';
788 buffer->start_tag[1] = 'H';
789 buffer->start_tag[2] = 'W';
790 buffer->start_tag[3] = '>';
791 buffer->driver_version_tag[0] = 'D';
792 buffer->driver_version_tag[1] = 'V';
793 put_unaligned_le16(sizeof(buffer->driver_version),
794 &buffer->driver_version_length);
061ef06a 795 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
6c223761
KB		 796 sizeof(buffer->driver_version) - 1);
797 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
b2346b50
MR		 798 buffer->dont_write_tag[0] = 'D';
799 buffer->dont_write_tag[1] = 'W';
6c223761
KB		 800 buffer->end_tag[0] = 'Z';
801 buffer->end_tag[1] = 'Z';
802
803 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
804
805 kfree(buffer);
806
807 return rc;
808}
809
810#pragma pack(1)
811
812struct bmic_host_wellness_time {
813 u8 start_tag[4];
814 u8 time_tag[2];
815 __le16 time_length;
816 u8 time[8];
817 u8 dont_write_tag[2];
818 u8 end_tag[2];
819};
820
821#pragma pack()
822
823static int pqi_write_current_time_to_host_wellness(
824 struct pqi_ctrl_info *ctrl_info)
825{
826 int rc;
827 struct bmic_host_wellness_time *buffer;
828 size_t buffer_length;
829 time64_t local_time;
830 unsigned int year;
ed10858e 831 struct tm tm;
6c223761
KB		 832
833 buffer_length = sizeof(*buffer);
834
835 buffer = kmalloc(buffer_length, GFP_KERNEL);
836 if (!buffer)
837 return -ENOMEM;
838
839 buffer->start_tag[0] = '<';
840 buffer->start_tag[1] = 'H';
841 buffer->start_tag[2] = 'W';
842 buffer->start_tag[3] = '>';
843 buffer->time_tag[0] = 'T';
844 buffer->time_tag[1] = 'D';
845 put_unaligned_le16(sizeof(buffer->time),
846 &buffer->time_length);
847
ed10858e
AB		 848 local_time = ktime_get_real_seconds();
849 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
6c223761
KB		 850 year = tm.tm_year + 1900;
851
852 buffer->time[0] = bin2bcd(tm.tm_hour);
853 buffer->time[1] = bin2bcd(tm.tm_min);
854 buffer->time[2] = bin2bcd(tm.tm_sec);
855 buffer->time[3] = 0;
856 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
857 buffer->time[5] = bin2bcd(tm.tm_mday);
858 buffer->time[6] = bin2bcd(year / 100);
859 buffer->time[7] = bin2bcd(year % 100);
860
861 buffer->dont_write_tag[0] = 'D';
862 buffer->dont_write_tag[1] = 'W';
863 buffer->end_tag[0] = 'Z';
864 buffer->end_tag[1] = 'Z';
865
866 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
867
868 kfree(buffer);
869
870 return rc;
871}
872
4fd22c13 873#define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ)
6c223761
KB		 874
875static void pqi_update_time_worker(struct work_struct *work)
876{
877 int rc;
878 struct pqi_ctrl_info *ctrl_info;
879
880 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
881 update_time_work);
882
5f310425
KB		 883 if (pqi_ctrl_offline(ctrl_info))
884 return;
885
6c223761
KB		 886 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
887 if (rc)
888 dev_warn(&ctrl_info->pci_dev->dev,
889 "error updating time on controller\n");
890
891 schedule_delayed_work(&ctrl_info->update_time_work,
892 PQI_UPDATE_TIME_WORK_INTERVAL);
893}
894
895static inline void pqi_schedule_update_time_worker(
4fbebf1a 896 struct pqi_ctrl_info *ctrl_info)
6c223761 897{
4fbebf1a 898 schedule_delayed_work(&ctrl_info->update_time_work, 0);
061ef06a
KB		 899}
900
901static inline void pqi_cancel_update_time_worker(
902 struct pqi_ctrl_info *ctrl_info)
903{
061ef06a 904 cancel_delayed_work_sync(&ctrl_info->update_time_work);
6c223761
KB		 905}
906
02133b68 907static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
6c223761
KB		 908 void *buffer, size_t buffer_length)
909{
02133b68 910 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer,
694c5d5b 911 buffer_length);
6c223761
KB		 912}
913
914static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
915 void **buffer)
916{
917 int rc;
918 size_t lun_list_length;
919 size_t lun_data_length;
920 size_t new_lun_list_length;
921 void *lun_data = NULL;
922 struct report_lun_header *report_lun_header;
923
924 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
925 if (!report_lun_header) {
926 rc = -ENOMEM;
927 goto out;
928 }
929
930 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header,
931 sizeof(*report_lun_header));
932 if (rc)
933 goto out;
934
935 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
936
937again:
938 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
939
940 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
941 if (!lun_data) {
942 rc = -ENOMEM;
943 goto out;
944 }
945
946 if (lun_list_length == 0) {
947 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
948 goto out;
949 }
950
951 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
952 if (rc)
953 goto out;
954
955 new_lun_list_length = get_unaligned_be32(
956 &((struct report_lun_header *)lun_data)->list_length);
957
958 if (new_lun_list_length > lun_list_length) {
959 lun_list_length = new_lun_list_length;
960 kfree(lun_data);
961 goto again;
962 }
963
964out:
965 kfree(report_lun_header);
966
967 if (rc) {
968 kfree(lun_data);
969 lun_data = NULL;
970 }
971
972 *buffer = lun_data;
973
974 return rc;
975}
976
977static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info,
978 void **buffer)
979{
980 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS,
981 buffer);
982}
983
984static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info,
985 void **buffer)
986{
987 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
988}
989
990static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
991 struct report_phys_lun_extended **physdev_list,
992 struct report_log_lun_extended **logdev_list)
993{
994 int rc;
995 size_t logdev_list_length;
996 size_t logdev_data_length;
997 struct report_log_lun_extended *internal_logdev_list;
998 struct report_log_lun_extended *logdev_data;
999 struct report_lun_header report_lun_header;
1000
1001 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
1002 if (rc)
1003 dev_err(&ctrl_info->pci_dev->dev,
1004 "report physical LUNs failed\n");
1005
1006 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
1007 if (rc)
1008 dev_err(&ctrl_info->pci_dev->dev,
1009 "report logical LUNs failed\n");
1010
1011 /*
1012 * Tack the controller itself onto the end of the logical device list.
1013 */
1014
1015 logdev_data = *logdev_list;
1016
1017 if (logdev_data) {
1018 logdev_list_length =
1019 get_unaligned_be32(&logdev_data->header.list_length);
1020 } else {
1021 memset(&report_lun_header, 0, sizeof(report_lun_header));
1022 logdev_data =
1023 (struct report_log_lun_extended *)&report_lun_header;
1024 logdev_list_length = 0;
1025 }
1026
1027 logdev_data_length = sizeof(struct report_lun_header) +
1028 logdev_list_length;
1029
1030 internal_logdev_list = kmalloc(logdev_data_length +
1031 sizeof(struct report_log_lun_extended), GFP_KERNEL);
1032 if (!internal_logdev_list) {
1033 kfree(*logdev_list);
1034 *logdev_list = NULL;
1035 return -ENOMEM;
1036 }
1037
1038 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
1039 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
1040 sizeof(struct report_log_lun_extended_entry));
1041 put_unaligned_be32(logdev_list_length +
1042 sizeof(struct report_log_lun_extended_entry),
1043 &internal_logdev_list->header.list_length);
1044
1045 kfree(*logdev_list);
1046 *logdev_list = internal_logdev_list;
1047
1048 return 0;
1049}
1050
1051static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
1052 int bus, int target, int lun)
1053{
1054 device->bus = bus;
1055 device->target = target;
1056 device->lun = lun;
1057}
1058
1059static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
1060{
1061 u8 *scsi3addr;
1062 u32 lunid;
bd10cf0b
KB		 1063 int bus;
1064 int target;
1065 int lun;
6c223761
KB		 1066
1067 scsi3addr = device->scsi3addr;
1068 lunid = get_unaligned_le32(scsi3addr);
1069
1070 if (pqi_is_hba_lunid(scsi3addr)) {
1071 /* The specified device is the controller. */
1072 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
1073 device->target_lun_valid = true;
1074 return;
1075 }
1076
1077 if (pqi_is_logical_device(device)) {
bd10cf0b
KB		 1078 if (device->is_external_raid_device) {
1079 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
1080 target = (lunid >> 16) & 0x3fff;
1081 lun = lunid & 0xff;
1082 } else {
1083 bus = PQI_RAID_VOLUME_BUS;
1084 target = 0;
1085 lun = lunid & 0x3fff;
1086 }
1087 pqi_set_bus_target_lun(device, bus, target, lun);
6c223761
KB		 1088 device->target_lun_valid = true;
1089 return;
1090 }
1091
1092 /*
1093 * Defer target and LUN assignment for non-controller physical devices
1094 * because the SAS transport layer will make these assignments later.
1095 */
1096 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
1097}
1098
1099static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
1100 struct pqi_scsi_dev *device)
1101{
1102 int rc;
1103 u8 raid_level;
1104 u8 *buffer;
1105
1106 raid_level = SA_RAID_UNKNOWN;
1107
1108 buffer = kmalloc(64, GFP_KERNEL);
1109 if (buffer) {
1110 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1111 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1112 if (rc == 0) {
1113 raid_level = buffer[8];
1114 if (raid_level > SA_RAID_MAX)
1115 raid_level = SA_RAID_UNKNOWN;
1116 }
1117 kfree(buffer);
1118 }
1119
1120 device->raid_level = raid_level;
1121}
1122
1123static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1124 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1125{
1126 char *err_msg;
1127 u32 raid_map_size;
1128 u32 r5or6_blocks_per_row;
6c223761
KB		 1129
1130 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1131
1132 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1133 err_msg = "RAID map too small";
1134 goto bad_raid_map;
1135 }
1136
6c223761
KB		 1137 if (device->raid_level == SA_RAID_1) {
1138 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1139 err_msg = "invalid RAID-1 map";
1140 goto bad_raid_map;
1141 }
1142 } else if (device->raid_level == SA_RAID_ADM) {
1143 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1144 err_msg = "invalid RAID-1(ADM) map";
1145 goto bad_raid_map;
1146 }
1147 } else if ((device->raid_level == SA_RAID_5 ||
1148 device->raid_level == SA_RAID_6) &&
1149 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1150 /* RAID 50/60 */
1151 r5or6_blocks_per_row =
1152 get_unaligned_le16(&raid_map->strip_size) *
1153 get_unaligned_le16(&raid_map->data_disks_per_row);
1154 if (r5or6_blocks_per_row == 0) {
1155 err_msg = "invalid RAID-5 or RAID-6 map";
1156 goto bad_raid_map;
1157 }
1158 }
1159
1160 return 0;
1161
1162bad_raid_map:
d87d5474 1163 dev_warn(&ctrl_info->pci_dev->dev,
38a7338a
KB		 1164 "logical device %08x%08x %s\n",
1165 *((u32 *)&device->scsi3addr),
1166 *((u32 *)&device->scsi3addr[4]), err_msg);
6c223761
KB		 1167
1168 return -EINVAL;
1169}
1170
1171static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1172 struct pqi_scsi_dev *device)
1173{
1174 int rc;
a91aaae0 1175 u32 raid_map_size;
6c223761
KB		 1176 struct raid_map *raid_map;
1177
1178 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1179 if (!raid_map)
1180 return -ENOMEM;
1181
a91aaae0
AK		 1182 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1183 device->scsi3addr, raid_map, sizeof(*raid_map),
1184 0, NULL, NO_TIMEOUT);
1185
6c223761
KB		 1186 if (rc)
1187 goto error;
1188
a91aaae0 1189 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
6c223761 1190
a91aaae0 1191 if (raid_map_size > sizeof(*raid_map)) {
6c223761 1192
a91aaae0
AK		 1193 kfree(raid_map);
1194
1195 raid_map = kmalloc(raid_map_size, GFP_KERNEL);
1196 if (!raid_map)
1197 return -ENOMEM;
1198
1199 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1200 device->scsi3addr, raid_map, raid_map_size,
1201 0, NULL, NO_TIMEOUT);
1202 if (rc)
1203 goto error;
1204
1205 if (get_unaligned_le32(&raid_map->structure_size)
1206 != raid_map_size) {
1207 dev_warn(&ctrl_info->pci_dev->dev,
1208 "Requested %d bytes, received %d bytes",
1209 raid_map_size,
1210 get_unaligned_le32(&raid_map->structure_size));
1211 goto error;
1212 }
1213 }
6c223761
KB		 1214
1215 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1216 if (rc)
1217 goto error;
1218
1219 device->raid_map = raid_map;
1220
1221 return 0;
1222
1223error:
1224 kfree(raid_map);
1225
1226 return rc;
1227}
1228
588a63fe 1229static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1230 struct pqi_scsi_dev *device)
1231{
1232 int rc;
1233 u8 *buffer;
588a63fe 1234 u8 bypass_status;
6c223761
KB		 1235
1236 buffer = kmalloc(64, GFP_KERNEL);
1237 if (!buffer)
1238 return;
1239
1240 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
588a63fe 1241 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
6c223761
KB		 1242 if (rc)
1243 goto out;
1244
694c5d5b
KB		 1245#define RAID_BYPASS_STATUS 4
1246#define RAID_BYPASS_CONFIGURED 0x1
1247#define RAID_BYPASS_ENABLED 0x2
6c223761 1248
588a63fe
KB		 1249 bypass_status = buffer[RAID_BYPASS_STATUS];
1250 device->raid_bypass_configured =
1251 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1252 if (device->raid_bypass_configured &&
1253 (bypass_status & RAID_BYPASS_ENABLED) &&
1254 pqi_get_raid_map(ctrl_info, device) == 0)
1255 device->raid_bypass_enabled = true;
6c223761
KB		 1256
1257out:
1258 kfree(buffer);
1259}
1260
1261/*
1262 * Use vendor-specific VPD to determine online/offline status of a volume.
1263 */
1264
1265static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1266 struct pqi_scsi_dev *device)
1267{
1268 int rc;
1269 size_t page_length;
1270 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1271 bool volume_offline = true;
1272 u32 volume_flags;
1273 struct ciss_vpd_logical_volume_status *vpd;
1274
1275 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1276 if (!vpd)
1277 goto no_buffer;
1278
1279 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1280 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1281 if (rc)
1282 goto out;
1283
7ff44499
DC		 1284 if (vpd->page_code != CISS_VPD_LV_STATUS)
1285 goto out;
1286
6c223761
KB		 1287 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1288 volume_status) + vpd->page_length;
1289 if (page_length < sizeof(*vpd))
1290 goto out;
1291
1292 volume_status = vpd->volume_status;
1293 volume_flags = get_unaligned_be32(&vpd->flags);
1294 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1295
1296out:
1297 kfree(vpd);
1298no_buffer:
1299 device->volume_status = volume_status;
1300 device->volume_offline = volume_offline;
1301}
1302
ce143793
KB		 1303static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info,
1304 struct pqi_scsi_dev *device,
1305 struct bmic_identify_physical_device *id_phys)
1306{
1307 int rc;
26b390ab 1308
ce143793
KB		 1309 memset(id_phys, 0, sizeof(*id_phys));
1310
1311 rc = pqi_identify_physical_device(ctrl_info, device,
1312 id_phys, sizeof(*id_phys));
1313 if (rc) {
1314 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1315 return rc;
1316 }
1317
1318 scsi_sanitize_inquiry_string(&id_phys->model[0], 8);
1319 scsi_sanitize_inquiry_string(&id_phys->model[8], 16);
1320
1321 memcpy(device->vendor, &id_phys->model[0], sizeof(device->vendor));
1322 memcpy(device->model, &id_phys->model[8], sizeof(device->model));
1323
1324 device->box_index = id_phys->box_index;
1325 device->phys_box_on_bus = id_phys->phys_box_on_bus;
1326 device->phy_connected_dev_type = id_phys->phy_connected_dev_type[0];
1327 device->queue_depth =
1328 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1329 device->active_path_index = id_phys->active_path_number;
1330 device->path_map = id_phys->redundant_path_present_map;
1331 memcpy(&device->box,
1332 &id_phys->alternate_paths_phys_box_on_port,
1333 sizeof(device->box));
1334 memcpy(&device->phys_connector,
1335 &id_phys->alternate_paths_phys_connector,
1336 sizeof(device->phys_connector));
1337 device->bay = id_phys->phys_bay_in_box;
1338
1339 return 0;
1340}
1341
1342static int pqi_get_logical_device_info(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1343 struct pqi_scsi_dev *device)
1344{
1345 int rc;
1346 u8 *buffer;
3d46a59a 1347
6c223761
KB		 1348 buffer = kmalloc(64, GFP_KERNEL);
1349 if (!buffer)
1350 return -ENOMEM;
1351
1352 /* Send an inquiry to the device to see what it is. */
ce143793
KB		 1353 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64);
1354 if (rc)
1355 goto out;
6c223761
KB		 1356
1357 scsi_sanitize_inquiry_string(&buffer[8], 8);
1358 scsi_sanitize_inquiry_string(&buffer[16], 16);
1359
1360 device->devtype = buffer[0] & 0x1f;
cbe0c7b1
KB		 1361 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1362 memcpy(device->model, &buffer[16], sizeof(device->model));
6c223761 1363
ce143793 1364 if (device->devtype == TYPE_DISK) {
bd10cf0b
KB		 1365 if (device->is_external_raid_device) {
1366 device->raid_level = SA_RAID_UNKNOWN;
1367 device->volume_status = CISS_LV_OK;
1368 device->volume_offline = false;
1369 } else {
1370 pqi_get_raid_level(ctrl_info, device);
588a63fe 1371 pqi_get_raid_bypass_status(ctrl_info, device);
bd10cf0b
KB		 1372 pqi_get_volume_status(ctrl_info, device);
1373 }
6c223761
KB		 1374 }
1375
1376out:
1377 kfree(buffer);
1378
1379 return rc;
1380}
1381
ce143793 1382static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1383 struct pqi_scsi_dev *device,
1384 struct bmic_identify_physical_device *id_phys)
1385{
1386 int rc;
1387
ce143793
KB		 1388 if (device->is_expander_smp_device)
1389 return 0;
6c223761 1390
ce143793
KB		 1391 if (pqi_is_logical_device(device))
1392 rc = pqi_get_logical_device_info(ctrl_info, device);
1393 else
1394 rc = pqi_get_physical_device_info(ctrl_info, device, id_phys);
694c5d5b 1395
ce143793 1396 return rc;
6c223761
KB		 1397}
1398
1399static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1400 struct pqi_scsi_dev *device)
1401{
1402 char *status;
1403 static const char unknown_state_str[] =
1404 "Volume is in an unknown state (%u)";
1405 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1406
1407 switch (device->volume_status) {
1408 case CISS_LV_OK:
1409 status = "Volume online";
1410 break;
1411 case CISS_LV_FAILED:
1412 status = "Volume failed";
1413 break;
1414 case CISS_LV_NOT_CONFIGURED:
1415 status = "Volume not configured";
1416 break;
1417 case CISS_LV_DEGRADED:
1418 status = "Volume degraded";
1419 break;
1420 case CISS_LV_READY_FOR_RECOVERY:
1421 status = "Volume ready for recovery operation";
1422 break;
1423 case CISS_LV_UNDERGOING_RECOVERY:
1424 status = "Volume undergoing recovery";
1425 break;
1426 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1427 status = "Wrong physical drive was replaced";
1428 break;
1429 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1430 status = "A physical drive not properly connected";
1431 break;
1432 case CISS_LV_HARDWARE_OVERHEATING:
1433 status = "Hardware is overheating";
1434 break;
1435 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1436 status = "Hardware has overheated";
1437 break;
1438 case CISS_LV_UNDERGOING_EXPANSION:
1439 status = "Volume undergoing expansion";
1440 break;
1441 case CISS_LV_NOT_AVAILABLE:
1442 status = "Volume waiting for transforming volume";
1443 break;
1444 case CISS_LV_QUEUED_FOR_EXPANSION:
1445 status = "Volume queued for expansion";
1446 break;
1447 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1448 status = "Volume disabled due to SCSI ID conflict";
1449 break;
1450 case CISS_LV_EJECTED:
1451 status = "Volume has been ejected";
1452 break;
1453 case CISS_LV_UNDERGOING_ERASE:
1454 status = "Volume undergoing background erase";
1455 break;
1456 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1457 status = "Volume ready for predictive spare rebuild";
1458 break;
1459 case CISS_LV_UNDERGOING_RPI:
1460 status = "Volume undergoing rapid parity initialization";
1461 break;
1462 case CISS_LV_PENDING_RPI:
1463 status = "Volume queued for rapid parity initialization";
1464 break;
1465 case CISS_LV_ENCRYPTED_NO_KEY:
1466 status = "Encrypted volume inaccessible - key not present";
1467 break;
1468 case CISS_LV_UNDERGOING_ENCRYPTION:
1469 status = "Volume undergoing encryption process";
1470 break;
1471 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1472 status = "Volume undergoing encryption re-keying process";
1473 break;
1474 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
d87d5474 1475 status = "Volume encrypted but encryption is disabled";
6c223761
KB		 1476 break;
1477 case CISS_LV_PENDING_ENCRYPTION:
1478 status = "Volume pending migration to encrypted state";
1479 break;
1480 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1481 status = "Volume pending encryption rekeying";
1482 break;
1483 case CISS_LV_NOT_SUPPORTED:
1484 status = "Volume not supported on this controller";
1485 break;
1486 case CISS_LV_STATUS_UNAVAILABLE:
1487 status = "Volume status not available";
1488 break;
1489 default:
1490 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1491 unknown_state_str, device->volume_status);
1492 status = unknown_state_buffer;
1493 break;
1494 }
1495
1496 dev_info(&ctrl_info->pci_dev->dev,
1497 "scsi %d:%d:%d:%d %s\n",
1498 ctrl_info->scsi_host->host_no,
1499 device->bus, device->target, device->lun, status);
1500}
1501
6c223761
KB		 1502static void pqi_rescan_worker(struct work_struct *work)
1503{
1504 struct pqi_ctrl_info *ctrl_info;
1505
1506 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1507 rescan_work);
1508
1509 pqi_scan_scsi_devices(ctrl_info);
1510}
1511
1512static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1513 struct pqi_scsi_dev *device)
1514{
1515 int rc;
1516
1517 if (pqi_is_logical_device(device))
1518 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1519 device->target, device->lun);
1520 else
1521 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1522
1523 return rc;
1524}
1525
1e46731e
MR		 1526#define PQI_PENDING_IO_TIMEOUT_SECS 20
1527
6c223761
KB		 1528static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info,
1529 struct pqi_scsi_dev *device)
1530{
1e46731e
MR		 1531 int rc;
1532
1533 pqi_device_remove_start(device);
1534
1535 rc = pqi_device_wait_for_pending_io(ctrl_info, device,
1536 PQI_PENDING_IO_TIMEOUT_SECS);
1537 if (rc)
1538 dev_err(&ctrl_info->pci_dev->dev,
1539 "scsi %d:%d:%d:%d removing device with %d outstanding commands\n",
1540 ctrl_info->scsi_host->host_no, device->bus,
1541 device->target, device->lun,
1542 atomic_read(&device->scsi_cmds_outstanding));
1543
6c223761
KB		 1544 if (pqi_is_logical_device(device))
1545 scsi_remove_device(device->sdev);
1546 else
1547 pqi_remove_sas_device(device);
1548}
1549
1550/* Assumes the SCSI device list lock is held. */
1551
1552static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1553 int bus, int target, int lun)
1554{
1555 struct pqi_scsi_dev *device;
1556
1557 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1558 scsi_device_list_entry)
1559 if (device->bus == bus && device->target == target &&
1560 device->lun == lun)
1561 return device;
1562
1563 return NULL;
1564}
1565
1566static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1,
1567 struct pqi_scsi_dev *dev2)
1568{
1569 if (dev1->is_physical_device != dev2->is_physical_device)
1570 return false;
1571
1572 if (dev1->is_physical_device)
1573 return dev1->wwid == dev2->wwid;
1574
1575 return memcmp(dev1->volume_id, dev2->volume_id,
1576 sizeof(dev1->volume_id)) == 0;
1577}
1578
1579enum pqi_find_result {
1580 DEVICE_NOT_FOUND,
1581 DEVICE_CHANGED,
1582 DEVICE_SAME,
1583};
1584
1585static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
1586 struct pqi_scsi_dev *device_to_find,
1587 struct pqi_scsi_dev **matching_device)
1588{
1589 struct pqi_scsi_dev *device;
1590
1591 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1592 scsi_device_list_entry) {
1593 if (pqi_scsi3addr_equal(device_to_find->scsi3addr,
1594 device->scsi3addr)) {
1595 *matching_device = device;
1596 if (pqi_device_equal(device_to_find, device)) {
1597 if (device_to_find->volume_offline)
1598 return DEVICE_CHANGED;
1599 return DEVICE_SAME;
1600 }
1601 return DEVICE_CHANGED;
1602 }
1603 }
1604
1605 return DEVICE_NOT_FOUND;
1606}
1607
3d46a59a
DB		 1608static inline const char *pqi_device_type(struct pqi_scsi_dev *device)
1609{
1610 if (device->is_expander_smp_device)
1611 return "Enclosure SMP ";
1612
1613 return scsi_device_type(device->devtype);
1614}
1615
6de783f6
KB		 1616#define PQI_DEV_INFO_BUFFER_LENGTH 128
1617
6c223761
KB		 1618static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1619 char *action, struct pqi_scsi_dev *device)
1620{
6de783f6
KB		 1621 ssize_t count;
1622 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1623
1624 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1625 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1626
1627 if (device->target_lun_valid)
181aea89 1628 count += scnprintf(buffer + count,
6de783f6
KB		 1629 PQI_DEV_INFO_BUFFER_LENGTH - count,
1630 "%d:%d",
1631 device->target,
1632 device->lun);
1633 else
181aea89 1634 count += scnprintf(buffer + count,
6de783f6
KB		 1635 PQI_DEV_INFO_BUFFER_LENGTH - count,
1636 "-:-");
1637
1638 if (pqi_is_logical_device(device))
181aea89 1639 count += scnprintf(buffer + count,
6de783f6
KB		 1640 PQI_DEV_INFO_BUFFER_LENGTH - count,
1641 " %08x%08x",
1642 *((u32 *)&device->scsi3addr),
1643 *((u32 *)&device->scsi3addr[4]));
1644 else
181aea89 1645 count += scnprintf(buffer + count,
6de783f6
KB		 1646 PQI_DEV_INFO_BUFFER_LENGTH - count,
1647 " %016llx", device->sas_address);
1648
181aea89 1649 count += scnprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
6de783f6 1650 " %s %.8s %.16s ",
3d46a59a 1651 pqi_device_type(device),
6c223761 1652 device->vendor,
6de783f6
KB		 1653 device->model);
1654
1655 if (pqi_is_logical_device(device)) {
1656 if (device->devtype == TYPE_DISK)
181aea89 1657 count += scnprintf(buffer + count,
6de783f6
KB		 1658 PQI_DEV_INFO_BUFFER_LENGTH - count,
1659 "SSDSmartPathCap%c En%c %-12s",
588a63fe
KB		 1660 device->raid_bypass_configured ? '+' : '-',
1661 device->raid_bypass_enabled ? '+' : '-',
6de783f6
KB		 1662 pqi_raid_level_to_string(device->raid_level));
1663 } else {
181aea89 1664 count += scnprintf(buffer + count,
6de783f6
KB		 1665 PQI_DEV_INFO_BUFFER_LENGTH - count,
1666 "AIO%c", device->aio_enabled ? '+' : '-');
1667 if (device->devtype == TYPE_DISK ||
1668 device->devtype == TYPE_ZBC)
181aea89 1669 count += scnprintf(buffer + count,
6de783f6
KB		 1670 PQI_DEV_INFO_BUFFER_LENGTH - count,
1671 " qd=%-6d", device->queue_depth);
1672 }
1673
1674 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
6c223761
KB		 1675}
1676
1677/* Assumes the SCSI device list lock is held. */
1678
1679static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1680 struct pqi_scsi_dev *new_device)
1681{
1682 existing_device->devtype = new_device->devtype;
1683 existing_device->device_type = new_device->device_type;
1684 existing_device->bus = new_device->bus;
1685 if (new_device->target_lun_valid) {
1686 existing_device->target = new_device->target;
1687 existing_device->lun = new_device->lun;
1688 existing_device->target_lun_valid = true;
1689 }
1690
244ca45e
MR		 1691 if ((existing_device->volume_status == CISS_LV_QUEUED_FOR_EXPANSION ||
1692 existing_device->volume_status == CISS_LV_UNDERGOING_EXPANSION) &&
1693 new_device->volume_status == CISS_LV_OK)
1694 existing_device->rescan = true;
1695
6c223761
KB		 1696 /* By definition, the scsi3addr and wwid fields are already the same. */
1697
1698 existing_device->is_physical_device = new_device->is_physical_device;
bd10cf0b
KB		 1699 existing_device->is_external_raid_device =
1700 new_device->is_external_raid_device;
3d46a59a
DB		 1701 existing_device->is_expander_smp_device =
1702 new_device->is_expander_smp_device;
6c223761
KB		 1703 existing_device->aio_enabled = new_device->aio_enabled;
1704 memcpy(existing_device->vendor, new_device->vendor,
1705 sizeof(existing_device->vendor));
1706 memcpy(existing_device->model, new_device->model,
1707 sizeof(existing_device->model));
1708 existing_device->sas_address = new_device->sas_address;
1709 existing_device->raid_level = new_device->raid_level;
1710 existing_device->queue_depth = new_device->queue_depth;
1711 existing_device->aio_handle = new_device->aio_handle;
1712 existing_device->volume_status = new_device->volume_status;
1713 existing_device->active_path_index = new_device->active_path_index;
1714 existing_device->path_map = new_device->path_map;
1715 existing_device->bay = new_device->bay;
2d2ad4bc
GW		 1716 existing_device->box_index = new_device->box_index;
1717 existing_device->phys_box_on_bus = new_device->phys_box_on_bus;
1718 existing_device->phy_connected_dev_type =
1719 new_device->phy_connected_dev_type;
6c223761
KB		 1720 memcpy(existing_device->box, new_device->box,
1721 sizeof(existing_device->box));
1722 memcpy(existing_device->phys_connector, new_device->phys_connector,
1723 sizeof(existing_device->phys_connector));
6c223761
KB		 1724 existing_device->offload_to_mirror = 0;
1725 kfree(existing_device->raid_map);
1726 existing_device->raid_map = new_device->raid_map;
588a63fe
KB		 1727 existing_device->raid_bypass_configured =
1728 new_device->raid_bypass_configured;
1729 existing_device->raid_bypass_enabled =
1730 new_device->raid_bypass_enabled;
a9a68101 1731 existing_device->device_offline = false;
6c223761
KB		 1732
1733 /* To prevent this from being freed later. */
1734 new_device->raid_map = NULL;
1735}
1736
1737static inline void pqi_free_device(struct pqi_scsi_dev *device)
1738{
1739 if (device) {
1740 kfree(device->raid_map);
1741 kfree(device);
1742 }
1743}
1744
1745/*
1746 * Called when exposing a new device to the OS fails in order to re-adjust
1747 * our internal SCSI device list to match the SCSI ML's view.
1748 */
1749
1750static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1751 struct pqi_scsi_dev *device)
1752{
1753 unsigned long flags;
1754
1755 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1756 list_del(&device->scsi_device_list_entry);
1757 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1758
1759 /* Allow the device structure to be freed later. */
1760 device->keep_device = false;
1761}
1762
3d46a59a
DB		 1763static inline bool pqi_is_device_added(struct pqi_scsi_dev *device)
1764{
1765 if (device->is_expander_smp_device)
1766 return device->sas_port != NULL;
1767
1768 return device->sdev != NULL;
1769}
1770
6c223761
KB		 1771static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1772 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1773{
1774 int rc;
1775 unsigned int i;
1776 unsigned long flags;
1777 enum pqi_find_result find_result;
1778 struct pqi_scsi_dev *device;
1779 struct pqi_scsi_dev *next;
1780 struct pqi_scsi_dev *matching_device;
8a994a04
KB		 1781 LIST_HEAD(add_list);
1782 LIST_HEAD(delete_list);
6c223761
KB		 1783
1784 /*
1785 * The idea here is to do as little work as possible while holding the
1786 * spinlock. That's why we go to great pains to defer anything other
1787 * than updating the internal device list until after we release the
1788 * spinlock.
1789 */
1790
1791 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1792
1793 /* Assume that all devices in the existing list have gone away. */
1794 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1795 scsi_device_list_entry)
1796 device->device_gone = true;
1797
1798 for (i = 0; i < num_new_devices; i++) {
1799 device = new_device_list[i];
1800
1801 find_result = pqi_scsi_find_entry(ctrl_info, device,
694c5d5b 1802 &matching_device);
6c223761
KB		 1803
1804 switch (find_result) {
1805 case DEVICE_SAME:
1806 /*
1807 * The newly found device is already in the existing
1808 * device list.
1809 */
1810 device->new_device = false;
1811 matching_device->device_gone = false;
1812 pqi_scsi_update_device(matching_device, device);
1813 break;
1814 case DEVICE_NOT_FOUND:
1815 /*
1816 * The newly found device is NOT in the existing device
1817 * list.
1818 */
1819 device->new_device = true;
1820 break;
1821 case DEVICE_CHANGED:
1822 /*
1823 * The original device has gone away and we need to add
1824 * the new device.
1825 */
1826 device->new_device = true;
1827 break;
6c223761
KB		 1828 }
1829 }
1830
1831 /* Process all devices that have gone away. */
1832 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1833 scsi_device_list_entry) {
1834 if (device->device_gone) {
1835 list_del(&device->scsi_device_list_entry);
1836 list_add_tail(&device->delete_list_entry, &delete_list);
1837 }
1838 }
1839
1840 /* Process all new devices. */
1841 for (i = 0; i < num_new_devices; i++) {
1842 device = new_device_list[i];
1843 if (!device->new_device)
1844 continue;
1845 if (device->volume_offline)
1846 continue;
1847 list_add_tail(&device->scsi_device_list_entry,
1848 &ctrl_info->scsi_device_list);
1849 list_add_tail(&device->add_list_entry, &add_list);
1850 /* To prevent this device structure from being freed later. */
1851 device->keep_device = true;
1852 }
1853
6c223761
KB		 1854 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1855
4fd22c13
MR		 1856 if (pqi_ctrl_in_ofa(ctrl_info))
1857 pqi_ctrl_ofa_done(ctrl_info);
1858
6c223761
KB		 1859 /* Remove all devices that have gone away. */
1860 list_for_each_entry_safe(device, next, &delete_list,
1861 delete_list_entry) {
6c223761
KB		 1862 if (device->volume_offline) {
1863 pqi_dev_info(ctrl_info, "offline", device);
1864 pqi_show_volume_status(ctrl_info, device);
1865 } else {
1866 pqi_dev_info(ctrl_info, "removed", device);
1867 }
3d46a59a 1868 if (pqi_is_device_added(device))
6de783f6 1869 pqi_remove_device(ctrl_info, device);
6c223761
KB		 1870 list_del(&device->delete_list_entry);
1871 pqi_free_device(device);
1872 }
1873
1874 /*
1875 * Notify the SCSI ML if the queue depth of any existing device has
1876 * changed.
1877 */
1878 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1879 scsi_device_list_entry) {
244ca45e
MR		 1880 if (device->sdev) {
1881 if (device->queue_depth !=
1882 device->advertised_queue_depth) {
1883 device->advertised_queue_depth = device->queue_depth;
1884 scsi_change_queue_depth(device->sdev,
1885 device->advertised_queue_depth);
1886 }
1887 if (device->rescan) {
1888 scsi_rescan_device(&device->sdev->sdev_gendev);
1889 device->rescan = false;
1890 }
6c223761
KB		 1891 }
1892 }
1893
1894 /* Expose any new devices. */
1895 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
3d46a59a 1896 if (!pqi_is_device_added(device)) {
6c223761 1897 rc = pqi_add_device(ctrl_info, device);
ce143793
KB		 1898 if (rc == 0) {
1899 pqi_dev_info(ctrl_info, "added", device);
1900 } else {
6c223761
KB		 1901 dev_warn(&ctrl_info->pci_dev->dev,
1902 "scsi %d:%d:%d:%d addition failed, device not added\n",
1903 ctrl_info->scsi_host->host_no,
1904 device->bus, device->target,
1905 device->lun);
1906 pqi_fixup_botched_add(ctrl_info, device);
6c223761
KB		 1907 }
1908 }
6c223761
KB		 1909 }
1910}
1911
ce143793 1912static inline bool pqi_is_supported_device(struct pqi_scsi_dev *device)
6c223761 1913{
ce143793
KB		 1914 /*
1915 * Only support the HBA controller itself as a RAID
1916 * controller. If it's a RAID controller other than
1917 * the HBA itself (an external RAID controller, for
1918 * example), we don't support it.
1919 */
1920 if (device->device_type == SA_DEVICE_TYPE_CONTROLLER &&
1921 !pqi_is_hba_lunid(device->scsi3addr))
1922 return false;
6c223761 1923
ce143793 1924 return true;
6c223761
KB		 1925}
1926
94086f5b 1927static inline bool pqi_skip_device(u8 *scsi3addr)
6c223761 1928{
94086f5b
KB		 1929 /* Ignore all masked devices. */
1930 if (MASKED_DEVICE(scsi3addr))
6c223761 1931 return true;
6c223761
KB		 1932
1933 return false;
1934}
1935
522bc026
DC		 1936static inline void pqi_mask_device(u8 *scsi3addr)
1937{
1938 scsi3addr[3] |= 0xc0;
1939}
1940
3d46a59a
DB		 1941static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device)
1942{
ce143793
KB		 1943 switch (device->device_type) {
1944 case SA_DEVICE_TYPE_SAS:
1945 case SA_DEVICE_TYPE_EXPANDER_SMP:
1946 case SA_DEVICE_TYPE_SES:
3d46a59a
DB		 1947 return true;
1948 }
1949
1950 return false;
1951}
1952
cd128244
DC		 1953static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
1954{
1955 return !device->is_physical_device ||
1956 !pqi_skip_device(device->scsi3addr);
1957}
1958
6c223761
KB		 1959static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1960{
1961 int i;
1962 int rc;
8a994a04 1963 LIST_HEAD(new_device_list_head);
6c223761
KB		 1964 struct report_phys_lun_extended *physdev_list = NULL;
1965 struct report_log_lun_extended *logdev_list = NULL;
1966 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
1967 struct report_log_lun_extended_entry *log_lun_ext_entry;
1968 struct bmic_identify_physical_device *id_phys = NULL;
1969 u32 num_physicals;
1970 u32 num_logicals;
1971 struct pqi_scsi_dev **new_device_list = NULL;
1972 struct pqi_scsi_dev *device;
1973 struct pqi_scsi_dev *next;
1974 unsigned int num_new_devices;
1975 unsigned int num_valid_devices;
1976 bool is_physical_device;
1977 u8 *scsi3addr;
5e6a9760
GW		 1978 unsigned int physical_index;
1979 unsigned int logical_index;
6c223761 1980 static char *out_of_memory_msg =
6de783f6 1981 "failed to allocate memory, device discovery stopped";
6c223761 1982
6c223761
KB		 1983 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
1984 if (rc)
1985 goto out;
1986
1987 if (physdev_list)
1988 num_physicals =
1989 get_unaligned_be32(&physdev_list->header.list_length)
1990 / sizeof(physdev_list->lun_entries[0]);
1991 else
1992 num_physicals = 0;
1993
1994 if (logdev_list)
1995 num_logicals =
1996 get_unaligned_be32(&logdev_list->header.list_length)
1997 / sizeof(logdev_list->lun_entries[0]);
1998 else
1999 num_logicals = 0;
2000
2001 if (num_physicals) {
2002 /*
2003 * We need this buffer for calls to pqi_get_physical_disk_info()
2004 * below. We allocate it here instead of inside
2005 * pqi_get_physical_disk_info() because it's a fairly large
2006 * buffer.
2007 */
2008 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
2009 if (!id_phys) {
2010 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2011 out_of_memory_msg);
2012 rc = -ENOMEM;
2013 goto out;
2014 }
522bc026 2015
694c5d5b 2016 if (pqi_hide_vsep) {
522bc026
DC		 2017 for (i = num_physicals - 1; i >= 0; i--) {
2018 phys_lun_ext_entry =
2019 &physdev_list->lun_entries[i];
2020 if (CISS_GET_DRIVE_NUMBER(
2021 phys_lun_ext_entry->lunid) ==
2022 PQI_VSEP_CISS_BTL) {
2023 pqi_mask_device(
2024 phys_lun_ext_entry->lunid);
2025 break;
2026 }
2027 }
2028 }
6c223761
KB		 2029 }
2030
2031 num_new_devices = num_physicals + num_logicals;
2032
6da2ec56
KC		 2033 new_device_list = kmalloc_array(num_new_devices,
2034 sizeof(*new_device_list),
2035 GFP_KERNEL);
6c223761
KB		 2036 if (!new_device_list) {
2037 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
2038 rc = -ENOMEM;
2039 goto out;
2040 }
2041
2042 for (i = 0; i < num_new_devices; i++) {
2043 device = kzalloc(sizeof(*device), GFP_KERNEL);
2044 if (!device) {
2045 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2046 out_of_memory_msg);
2047 rc = -ENOMEM;
2048 goto out;
2049 }
2050 list_add_tail(&device->new_device_list_entry,
2051 &new_device_list_head);
2052 }
2053
2054 device = NULL;
2055 num_valid_devices = 0;
5e6a9760
GW		 2056 physical_index = 0;
2057 logical_index = 0;
6c223761
KB		 2058
2059 for (i = 0; i < num_new_devices; i++) {
2060
5e6a9760
GW		 2061 if ((!pqi_expose_ld_first && i < num_physicals) ||
2062 (pqi_expose_ld_first && i >= num_logicals)) {
6c223761 2063 is_physical_device = true;
5e6a9760
GW		 2064 phys_lun_ext_entry =
2065 &physdev_list->lun_entries[physical_index++];
6c223761
KB		 2066 log_lun_ext_entry = NULL;
2067 scsi3addr = phys_lun_ext_entry->lunid;
2068 } else {
2069 is_physical_device = false;
2070 phys_lun_ext_entry = NULL;
2071 log_lun_ext_entry =
5e6a9760 2072 &logdev_list->lun_entries[logical_index++];
6c223761
KB		 2073 scsi3addr = log_lun_ext_entry->lunid;
2074 }
2075
94086f5b 2076 if (is_physical_device && pqi_skip_device(scsi3addr))
6c223761
KB		 2077 continue;
2078
2079 if (device)
2080 device = list_next_entry(device, new_device_list_entry);
2081 else
2082 device = list_first_entry(&new_device_list_head,
2083 struct pqi_scsi_dev, new_device_list_entry);
2084
2085 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
2086 device->is_physical_device = is_physical_device;
3d46a59a 2087 if (is_physical_device) {
ce143793
KB		 2088 device->device_type = phys_lun_ext_entry->device_type;
2089 if (device->device_type == SA_DEVICE_TYPE_EXPANDER_SMP)
3d46a59a
DB		 2090 device->is_expander_smp_device = true;
2091 } else {
bd10cf0b
KB		 2092 device->is_external_raid_device =
2093 pqi_is_external_raid_addr(scsi3addr);
3d46a59a 2094 }
6c223761 2095
ce143793
KB		 2096 if (!pqi_is_supported_device(device))
2097 continue;
2098
6c223761 2099 /* Gather information about the device. */
ce143793 2100 rc = pqi_get_device_info(ctrl_info, device, id_phys);
6c223761
KB		 2101 if (rc == -ENOMEM) {
2102 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2103 out_of_memory_msg);
2104 goto out;
2105 }
2106 if (rc) {
6de783f6
KB		 2107 if (device->is_physical_device)
2108 dev_warn(&ctrl_info->pci_dev->dev,
2109 "obtaining device info failed, skipping physical device %016llx\n",
2110 get_unaligned_be64(
2111 &phys_lun_ext_entry->wwid));
2112 else
2113 dev_warn(&ctrl_info->pci_dev->dev,
2114 "obtaining device info failed, skipping logical device %08x%08x\n",
2115 *((u32 *)&device->scsi3addr),
2116 *((u32 *)&device->scsi3addr[4]));
6c223761
KB		 2117 rc = 0;
2118 continue;
2119 }
2120
6c223761
KB		 2121 pqi_assign_bus_target_lun(device);
2122
6c223761
KB		 2123 if (device->is_physical_device) {
2124 device->wwid = phys_lun_ext_entry->wwid;
2125 if ((phys_lun_ext_entry->device_flags &
694c5d5b 2126 CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED) &&
3d46a59a 2127 phys_lun_ext_entry->aio_handle) {
6c223761 2128 device->aio_enabled = true;
9e322310
CIK		 2129 device->aio_handle =
2130 phys_lun_ext_entry->aio_handle;
3d46a59a 2131 }
6c223761
KB		 2132 } else {
2133 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
2134 sizeof(device->volume_id));
2135 }
2136
3d46a59a
DB		 2137 if (pqi_is_device_with_sas_address(device))
2138 device->sas_address = get_unaligned_be64(&device->wwid);
6c223761
KB		 2139
2140 new_device_list[num_valid_devices++] = device;
2141 }
2142
2143 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
2144
2145out:
2146 list_for_each_entry_safe(device, next, &new_device_list_head,
2147 new_device_list_entry) {
2148 if (device->keep_device)
2149 continue;
2150 list_del(&device->new_device_list_entry);
2151 pqi_free_device(device);
2152 }
2153
2154 kfree(new_device_list);
2155 kfree(physdev_list);
2156 kfree(logdev_list);
2157 kfree(id_phys);
2158
2159 return rc;
2160}
2161
2162static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2163{
2164 unsigned long flags;
2165 struct pqi_scsi_dev *device;
6c223761 2166
a37ef745
KB		 2167 while (1) {
2168 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
2169
2170 device = list_first_entry_or_null(&ctrl_info->scsi_device_list,
2171 struct pqi_scsi_dev, scsi_device_list_entry);
2172 if (device)
2173 list_del(&device->scsi_device_list_entry);
2174
2175 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
2176 flags);
2177
2178 if (!device)
2179 break;
6c223761 2180
3d46a59a 2181 if (pqi_is_device_added(device))
6c223761 2182 pqi_remove_device(ctrl_info, device);
6c223761
KB		 2183 pqi_free_device(device);
2184 }
6c223761
KB		 2185}
2186
2187static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2188{
530dd8a7 2189 int rc = 0;
6c223761
KB		 2190
2191 if (pqi_ctrl_offline(ctrl_info))
2192 return -ENXIO;
2193
530dd8a7 2194 if (!mutex_trylock(&ctrl_info->scan_mutex)) {
5f310425 2195 pqi_schedule_rescan_worker_delayed(ctrl_info);
9946a398 2196 rc = -EINPROGRESS;
530dd8a7
MR		 2197 } else {
2198 rc = pqi_update_scsi_devices(ctrl_info);
2199 if (rc)
2200 pqi_schedule_rescan_worker_delayed(ctrl_info);
2201 mutex_unlock(&ctrl_info->scan_mutex);
2202 }
6c223761
KB		 2203
2204 return rc;
2205}
2206
2207static void pqi_scan_start(struct Scsi_Host *shost)
2208{
4fd22c13
MR		 2209 struct pqi_ctrl_info *ctrl_info;
2210
2211 ctrl_info = shost_to_hba(shost);
2212 if (pqi_ctrl_in_ofa(ctrl_info))
2213 return;
2214
2215 pqi_scan_scsi_devices(ctrl_info);
6c223761
KB		 2216}
2217
2218/* Returns TRUE if scan is finished. */
2219
2220static int pqi_scan_finished(struct Scsi_Host *shost,
2221 unsigned long elapsed_time)
2222{
2223 struct pqi_ctrl_info *ctrl_info;
2224
2225 ctrl_info = shost_priv(shost);
2226
2227 return !mutex_is_locked(&ctrl_info->scan_mutex);
2228}
2229
061ef06a
KB		 2230static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
2231{
2232 mutex_lock(&ctrl_info->scan_mutex);
2233 mutex_unlock(&ctrl_info->scan_mutex);
2234}
2235
2236static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
2237{
2238 mutex_lock(&ctrl_info->lun_reset_mutex);
2239 mutex_unlock(&ctrl_info->lun_reset_mutex);
2240}
2241
4fd22c13
MR		 2242static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info)
2243{
2244 mutex_lock(&ctrl_info->ofa_mutex);
2245 mutex_unlock(&ctrl_info->ofa_mutex);
2246}
2247
6c223761
KB		 2248static inline void pqi_set_encryption_info(
2249 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map,
2250 u64 first_block)
2251{
2252 u32 volume_blk_size;
2253
2254 /*
2255 * Set the encryption tweak values based on logical block address.
2256 * If the block size is 512, the tweak value is equal to the LBA.
2257 * For other block sizes, tweak value is (LBA * block size) / 512.
2258 */
2259 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2260 if (volume_blk_size != 512)
2261 first_block = (first_block * volume_blk_size) / 512;
2262
2263 encryption_info->data_encryption_key_index =
2264 get_unaligned_le16(&raid_map->data_encryption_key_index);
2265 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2266 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2267}
2268
2269/*
588a63fe 2270 * Attempt to perform RAID bypass mapping for a logical volume I/O.
6c223761
KB		 2271 */
2272
2273#define PQI_RAID_BYPASS_INELIGIBLE 1
2274
2275static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2276 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2277 struct pqi_queue_group *queue_group)
2278{
2279 struct raid_map *raid_map;
2280 bool is_write = false;
2281 u32 map_index;
2282 u64 first_block;
2283 u64 last_block;
2284 u32 block_cnt;
2285 u32 blocks_per_row;
2286 u64 first_row;
2287 u64 last_row;
2288 u32 first_row_offset;
2289 u32 last_row_offset;
2290 u32 first_column;
2291 u32 last_column;
2292 u64 r0_first_row;
2293 u64 r0_last_row;
2294 u32 r5or6_blocks_per_row;
2295 u64 r5or6_first_row;
2296 u64 r5or6_last_row;
2297 u32 r5or6_first_row_offset;
2298 u32 r5or6_last_row_offset;
2299 u32 r5or6_first_column;
2300 u32 r5or6_last_column;
2301 u16 data_disks_per_row;
2302 u32 total_disks_per_row;
2303 u16 layout_map_count;
2304 u32 stripesize;
2305 u16 strip_size;
2306 u32 first_group;
2307 u32 last_group;
2308 u32 current_group;
2309 u32 map_row;
2310 u32 aio_handle;
2311 u64 disk_block;
2312 u32 disk_block_cnt;
2313 u8 cdb[16];
2314 u8 cdb_length;
2315 int offload_to_mirror;
2316 struct pqi_encryption_info *encryption_info_ptr;
2317 struct pqi_encryption_info encryption_info;
2318#if BITS_PER_LONG == 32
2319 u64 tmpdiv;
2320#endif
2321
2322 /* Check for valid opcode, get LBA and block count. */
2323 switch (scmd->cmnd[0]) {
2324 case WRITE_6:
2325 is_write = true;
2326 /* fall through */
2327 case READ_6:
e018ef57
B		 2328 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2329 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
6c223761
KB		 2330 block_cnt = (u32)scmd->cmnd[4];
2331 if (block_cnt == 0)
2332 block_cnt = 256;
2333 break;
2334 case WRITE_10:
2335 is_write = true;
2336 /* fall through */
2337 case READ_10:
2338 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2339 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2340 break;
2341 case WRITE_12:
2342 is_write = true;
2343 /* fall through */
2344 case READ_12:
2345 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2346 block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2347 break;
2348 case WRITE_16:
2349 is_write = true;
2350 /* fall through */
2351 case READ_16:
2352 first_block = get_unaligned_be64(&scmd->cmnd[2]);
2353 block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2354 break;
2355 default:
2356 /* Process via normal I/O path. */
2357 return PQI_RAID_BYPASS_INELIGIBLE;
2358 }
2359
2360 /* Check for write to non-RAID-0. */
2361 if (is_write && device->raid_level != SA_RAID_0)
2362 return PQI_RAID_BYPASS_INELIGIBLE;
2363
2364 if (unlikely(block_cnt == 0))
2365 return PQI_RAID_BYPASS_INELIGIBLE;
2366
2367 last_block = first_block + block_cnt - 1;
2368 raid_map = device->raid_map;
2369
2370 /* Check for invalid block or wraparound. */
2371 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2372 last_block < first_block)
2373 return PQI_RAID_BYPASS_INELIGIBLE;
2374
2375 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row);
2376 strip_size = get_unaligned_le16(&raid_map->strip_size);
2377 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2378
2379 /* Calculate stripe information for the request. */
2380 blocks_per_row = data_disks_per_row * strip_size;
2381#if BITS_PER_LONG == 32
2382 tmpdiv = first_block;
2383 do_div(tmpdiv, blocks_per_row);
2384 first_row = tmpdiv;
2385 tmpdiv = last_block;
2386 do_div(tmpdiv, blocks_per_row);
2387 last_row = tmpdiv;
2388 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2389 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2390 tmpdiv = first_row_offset;
2391 do_div(tmpdiv, strip_size);
2392 first_column = tmpdiv;
2393 tmpdiv = last_row_offset;
2394 do_div(tmpdiv, strip_size);
2395 last_column = tmpdiv;
2396#else
2397 first_row = first_block / blocks_per_row;
2398 last_row = last_block / blocks_per_row;
2399 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2400 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2401 first_column = first_row_offset / strip_size;
2402 last_column = last_row_offset / strip_size;
2403#endif
2404
2405 /* If this isn't a single row/column then give to the controller. */
2406 if (first_row != last_row || first_column != last_column)
2407 return PQI_RAID_BYPASS_INELIGIBLE;
2408
2409 /* Proceeding with driver mapping. */
2410 total_disks_per_row = data_disks_per_row +
2411 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2412 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2413 get_unaligned_le16(&raid_map->row_cnt);
2414 map_index = (map_row * total_disks_per_row) + first_column;
2415
2416 /* RAID 1 */
2417 if (device->raid_level == SA_RAID_1) {
2418 if (device->offload_to_mirror)
2419 map_index += data_disks_per_row;
2420 device->offload_to_mirror = !device->offload_to_mirror;
2421 } else if (device->raid_level == SA_RAID_ADM) {
2422 /* RAID ADM */
2423 /*
2424 * Handles N-way mirrors (R1-ADM) and R10 with # of drives
2425 * divisible by 3.
2426 */
2427 offload_to_mirror = device->offload_to_mirror;
2428 if (offload_to_mirror == 0) {
2429 /* use physical disk in the first mirrored group. */
2430 map_index %= data_disks_per_row;
2431 } else {
2432 do {
2433 /*
2434 * Determine mirror group that map_index
2435 * indicates.
2436 */
2437 current_group = map_index / data_disks_per_row;
2438
2439 if (offload_to_mirror != current_group) {
2440 if (current_group <
2441 layout_map_count - 1) {
2442 /*
2443 * Select raid index from
2444 * next group.
2445 */
2446 map_index += data_disks_per_row;
2447 current_group++;
2448 } else {
2449 /*
2450 * Select raid index from first
2451 * group.
2452 */
2453 map_index %= data_disks_per_row;
2454 current_group = 0;
2455 }
2456 }
2457 } while (offload_to_mirror != current_group);
2458 }
2459
2460 /* Set mirror group to use next time. */
2461 offload_to_mirror =
2462 (offload_to_mirror >= layout_map_count - 1) ?
2463 0 : offload_to_mirror + 1;
2464 WARN_ON(offload_to_mirror >= layout_map_count);
2465 device->offload_to_mirror = offload_to_mirror;
2466 /*
2467 * Avoid direct use of device->offload_to_mirror within this
2468 * function since multiple threads might simultaneously
2469 * increment it beyond the range of device->layout_map_count -1.
2470 */
2471 } else if ((device->raid_level == SA_RAID_5 ||
2472 device->raid_level == SA_RAID_6) && layout_map_count > 1) {
2473 /* RAID 50/60 */
2474 /* Verify first and last block are in same RAID group */
2475 r5or6_blocks_per_row = strip_size * data_disks_per_row;
2476 stripesize = r5or6_blocks_per_row * layout_map_count;
2477#if BITS_PER_LONG == 32
2478 tmpdiv = first_block;
2479 first_group = do_div(tmpdiv, stripesize);
2480 tmpdiv = first_group;
2481 do_div(tmpdiv, r5or6_blocks_per_row);
2482 first_group = tmpdiv;
2483 tmpdiv = last_block;
2484 last_group = do_div(tmpdiv, stripesize);
2485 tmpdiv = last_group;
2486 do_div(tmpdiv, r5or6_blocks_per_row);
2487 last_group = tmpdiv;
2488#else
2489 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
2490 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
2491#endif
2492 if (first_group != last_group)
2493 return PQI_RAID_BYPASS_INELIGIBLE;
2494
2495 /* Verify request is in a single row of RAID 5/6 */
2496#if BITS_PER_LONG == 32
2497 tmpdiv = first_block;
2498 do_div(tmpdiv, stripesize);
2499 first_row = r5or6_first_row = r0_first_row = tmpdiv;
2500 tmpdiv = last_block;
2501 do_div(tmpdiv, stripesize);
2502 r5or6_last_row = r0_last_row = tmpdiv;
2503#else
2504 first_row = r5or6_first_row = r0_first_row =
2505 first_block / stripesize;
2506 r5or6_last_row = r0_last_row = last_block / stripesize;
2507#endif
2508 if (r5or6_first_row != r5or6_last_row)
2509 return PQI_RAID_BYPASS_INELIGIBLE;
2510
2511 /* Verify request is in a single column */
2512#if BITS_PER_LONG == 32
2513 tmpdiv = first_block;
2514 first_row_offset = do_div(tmpdiv, stripesize);
2515 tmpdiv = first_row_offset;
2516 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row);
2517 r5or6_first_row_offset = first_row_offset;
2518 tmpdiv = last_block;
2519 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
2520 tmpdiv = r5or6_last_row_offset;
2521 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
2522 tmpdiv = r5or6_first_row_offset;
2523 do_div(tmpdiv, strip_size);
2524 first_column = r5or6_first_column = tmpdiv;
2525 tmpdiv = r5or6_last_row_offset;
2526 do_div(tmpdiv, strip_size);
2527 r5or6_last_column = tmpdiv;
2528#else
2529 first_row_offset = r5or6_first_row_offset =
2530 (u32)((first_block % stripesize) %
2531 r5or6_blocks_per_row);
2532
2533 r5or6_last_row_offset =
2534 (u32)((last_block % stripesize) %
2535 r5or6_blocks_per_row);
2536
2537 first_column = r5or6_first_row_offset / strip_size;
2538 r5or6_first_column = first_column;
2539 r5or6_last_column = r5or6_last_row_offset / strip_size;
2540#endif
2541 if (r5or6_first_column != r5or6_last_column)
2542 return PQI_RAID_BYPASS_INELIGIBLE;
2543
2544 /* Request is eligible */
2545 map_row =
2546 ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2547 get_unaligned_le16(&raid_map->row_cnt);
2548
2549 map_index = (first_group *
2550 (get_unaligned_le16(&raid_map->row_cnt) *
2551 total_disks_per_row)) +
2552 (map_row * total_disks_per_row) + first_column;
2553 }
2554
6c223761
KB		 2555 aio_handle = raid_map->disk_data[map_index].aio_handle;
2556 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2557 first_row * strip_size +
2558 (first_row_offset - first_column * strip_size);
2559 disk_block_cnt = block_cnt;
2560
2561 /* Handle differing logical/physical block sizes. */
2562 if (raid_map->phys_blk_shift) {
2563 disk_block <<= raid_map->phys_blk_shift;
2564 disk_block_cnt <<= raid_map->phys_blk_shift;
2565 }
2566
2567 if (unlikely(disk_block_cnt > 0xffff))
2568 return PQI_RAID_BYPASS_INELIGIBLE;
2569
2570 /* Build the new CDB for the physical disk I/O. */
2571 if (disk_block > 0xffffffff) {
2572 cdb[0] = is_write ? WRITE_16 : READ_16;
2573 cdb[1] = 0;
2574 put_unaligned_be64(disk_block, &cdb[2]);
2575 put_unaligned_be32(disk_block_cnt, &cdb[10]);
2576 cdb[14] = 0;
2577 cdb[15] = 0;
2578 cdb_length = 16;
2579 } else {
2580 cdb[0] = is_write ? WRITE_10 : READ_10;
2581 cdb[1] = 0;
2582 put_unaligned_be32((u32)disk_block, &cdb[2]);
2583 cdb[6] = 0;
2584 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]);
2585 cdb[9] = 0;
2586 cdb_length = 10;
2587 }
2588
2589 if (get_unaligned_le16(&raid_map->flags) &
2590 RAID_MAP_ENCRYPTION_ENABLED) {
2591 pqi_set_encryption_info(&encryption_info, raid_map,
2592 first_block);
2593 encryption_info_ptr = &encryption_info;
2594 } else {
2595 encryption_info_ptr = NULL;
2596 }
2597
2598 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
376fb880 2599 cdb, cdb_length, queue_group, encryption_info_ptr, true);
6c223761
KB		 2600}
2601
2602#define PQI_STATUS_IDLE 0x0
2603
2604#define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2605#define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2606
2607#define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2608#define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2609#define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2610#define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2611#define PQI_DEVICE_STATE_ERROR 0x4
2612
2613#define PQI_MODE_READY_TIMEOUT_SECS 30
2614#define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2615
2616static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2617{
2618 struct pqi_device_registers __iomem *pqi_registers;
2619 unsigned long timeout;
2620 u64 signature;
2621 u8 status;
2622
2623 pqi_registers = ctrl_info->pqi_registers;
4fd22c13 2624 timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761
KB		 2625
2626 while (1) {
2627 signature = readq(&pqi_registers->signature);
2628 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2629 sizeof(signature)) == 0)
2630 break;
2631 if (time_after(jiffies, timeout)) {
2632 dev_err(&ctrl_info->pci_dev->dev,
2633 "timed out waiting for PQI signature\n");
2634 return -ETIMEDOUT;
2635 }
2636 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2637 }
2638
2639 while (1) {
2640 status = readb(&pqi_registers->function_and_status_code);
2641 if (status == PQI_STATUS_IDLE)
2642 break;
2643 if (time_after(jiffies, timeout)) {
2644 dev_err(&ctrl_info->pci_dev->dev,
2645 "timed out waiting for PQI IDLE\n");
2646 return -ETIMEDOUT;
2647 }
2648 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2649 }
2650
2651 while (1) {
2652 if (readl(&pqi_registers->device_status) ==
2653 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2654 break;
2655 if (time_after(jiffies, timeout)) {
2656 dev_err(&ctrl_info->pci_dev->dev,
2657 "timed out waiting for PQI all registers ready\n");
2658 return -ETIMEDOUT;
2659 }
2660 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2661 }
2662
2663 return 0;
2664}
2665
2666static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2667{
2668 struct pqi_scsi_dev *device;
2669
2670 device = io_request->scmd->device->hostdata;
588a63fe 2671 device->raid_bypass_enabled = false;
376fb880 2672 device->aio_enabled = false;
6c223761
KB		 2673}
2674
d87d5474 2675static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
6c223761
KB		 2676{
2677 struct pqi_ctrl_info *ctrl_info;
e58081a7 2678 struct pqi_scsi_dev *device;
6c223761 2679
03b288cf
KB		 2680 device = sdev->hostdata;
2681 if (device->device_offline)
2682 return;
2683
2684 device->device_offline = true;
03b288cf
KB		 2685 ctrl_info = shost_to_hba(sdev->host);
2686 pqi_schedule_rescan_worker(ctrl_info);
a9a68101 2687 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n",
03b288cf
KB		 2688 path, ctrl_info->scsi_host->host_no, device->bus,
2689 device->target, device->lun);
6c223761
KB		 2690}
2691
2692static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2693{
2694 u8 scsi_status;
2695 u8 host_byte;
2696 struct scsi_cmnd *scmd;
2697 struct pqi_raid_error_info *error_info;
2698 size_t sense_data_length;
2699 int residual_count;
2700 int xfer_count;
2701 struct scsi_sense_hdr sshdr;
2702
2703 scmd = io_request->scmd;
2704 if (!scmd)
2705 return;
2706
2707 error_info = io_request->error_info;
2708 scsi_status = error_info->status;
2709 host_byte = DID_OK;
2710
f5b63206
KB		 2711 switch (error_info->data_out_result) {
2712 case PQI_DATA_IN_OUT_GOOD:
2713 break;
2714 case PQI_DATA_IN_OUT_UNDERFLOW:
6c223761
KB		 2715 xfer_count =
2716 get_unaligned_le32(&error_info->data_out_transferred);
2717 residual_count = scsi_bufflen(scmd) - xfer_count;
2718 scsi_set_resid(scmd, residual_count);
2719 if (xfer_count < scmd->underflow)
2720 host_byte = DID_SOFT_ERROR;
f5b63206
KB		 2721 break;
2722 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
2723 case PQI_DATA_IN_OUT_ABORTED:
2724 host_byte = DID_ABORT;
2725 break;
2726 case PQI_DATA_IN_OUT_TIMEOUT:
2727 host_byte = DID_TIME_OUT;
2728 break;
2729 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
2730 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
2731 case PQI_DATA_IN_OUT_BUFFER_ERROR:
2732 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
2733 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
2734 case PQI_DATA_IN_OUT_ERROR:
2735 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
2736 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
2737 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
2738 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
2739 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
2740 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
2741 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
2742 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
2743 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
2744 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
2745 default:
2746 host_byte = DID_ERROR;
2747 break;
6c223761
KB		 2748 }
2749
2750 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2751 if (sense_data_length == 0)
2752 sense_data_length =
2753 get_unaligned_le16(&error_info->response_data_length);
2754 if (sense_data_length) {
2755 if (sense_data_length > sizeof(error_info->data))
2756 sense_data_length = sizeof(error_info->data);
2757
2758 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2759 scsi_normalize_sense(error_info->data,
2760 sense_data_length, &sshdr) &&
2761 sshdr.sense_key == HARDWARE_ERROR &&
8ef860ae 2762 sshdr.asc == 0x3e) {
441b7195
EV		 2763 struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host);
2764 struct pqi_scsi_dev *device = scmd->device->hostdata;
2765
8ef860ae
EV		 2766 switch (sshdr.ascq) {
2767 case 0x1: /* LOGICAL UNIT FAILURE */
2768 if (printk_ratelimit())
2769 scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n",
2770 ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
2771 pqi_take_device_offline(scmd->device, "RAID");
2772 host_byte = DID_NO_CONNECT;
2773 break;
2774
2775 default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */
2776 if (printk_ratelimit())
2777 scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n",
2778 sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
2779 break;
2780 }
6c223761
KB		 2781 }
2782
2783 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2784 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2785 memcpy(scmd->sense_buffer, error_info->data,
2786 sense_data_length);
2787 }
2788
2789 scmd->result = scsi_status;
2790 set_host_byte(scmd, host_byte);
2791}
2792
2793static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2794{
2795 u8 scsi_status;
2796 u8 host_byte;
2797 struct scsi_cmnd *scmd;
2798 struct pqi_aio_error_info *error_info;
2799 size_t sense_data_length;
2800 int residual_count;
2801 int xfer_count;
2802 bool device_offline;
2803
2804 scmd = io_request->scmd;
2805 error_info = io_request->error_info;
2806 host_byte = DID_OK;
2807 sense_data_length = 0;
2808 device_offline = false;
2809
2810 switch (error_info->service_response) {
2811 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2812 scsi_status = error_info->status;
2813 break;
2814 case PQI_AIO_SERV_RESPONSE_FAILURE:
2815 switch (error_info->status) {
2816 case PQI_AIO_STATUS_IO_ABORTED:
2817 scsi_status = SAM_STAT_TASK_ABORTED;
2818 break;
2819 case PQI_AIO_STATUS_UNDERRUN:
2820 scsi_status = SAM_STAT_GOOD;
2821 residual_count = get_unaligned_le32(
2822 &error_info->residual_count);
2823 scsi_set_resid(scmd, residual_count);
2824 xfer_count = scsi_bufflen(scmd) - residual_count;
2825 if (xfer_count < scmd->underflow)
2826 host_byte = DID_SOFT_ERROR;
2827 break;
2828 case PQI_AIO_STATUS_OVERRUN:
2829 scsi_status = SAM_STAT_GOOD;
2830 break;
2831 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2832 pqi_aio_path_disabled(io_request);
2833 scsi_status = SAM_STAT_GOOD;
2834 io_request->status = -EAGAIN;
2835 break;
2836 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
2837 case PQI_AIO_STATUS_INVALID_DEVICE:
376fb880
KB		 2838 if (!io_request->raid_bypass) {
2839 device_offline = true;
2840 pqi_take_device_offline(scmd->device, "AIO");
2841 host_byte = DID_NO_CONNECT;
2842 }
6c223761
KB		 2843 scsi_status = SAM_STAT_CHECK_CONDITION;
2844 break;
2845 case PQI_AIO_STATUS_IO_ERROR:
2846 default:
2847 scsi_status = SAM_STAT_CHECK_CONDITION;
2848 break;
2849 }
2850 break;
2851 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
2852 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
2853 scsi_status = SAM_STAT_GOOD;
2854 break;
2855 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
2856 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
2857 default:
2858 scsi_status = SAM_STAT_CHECK_CONDITION;
2859 break;
2860 }
2861
2862 if (error_info->data_present) {
2863 sense_data_length =
2864 get_unaligned_le16(&error_info->data_length);
2865 if (sense_data_length) {
2866 if (sense_data_length > sizeof(error_info->data))
2867 sense_data_length = sizeof(error_info->data);
2868 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2869 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2870 memcpy(scmd->sense_buffer, error_info->data,
2871 sense_data_length);
2872 }
2873 }
2874
2875 if (device_offline && sense_data_length == 0)
2876 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
2877 0x3e, 0x1);
2878
2879 scmd->result = scsi_status;
2880 set_host_byte(scmd, host_byte);
2881}
2882
2883static void pqi_process_io_error(unsigned int iu_type,
2884 struct pqi_io_request *io_request)
2885{
2886 switch (iu_type) {
2887 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2888 pqi_process_raid_io_error(io_request);
2889 break;
2890 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2891 pqi_process_aio_io_error(io_request);
2892 break;
2893 }
2894}
2895
2896static int pqi_interpret_task_management_response(
2897 struct pqi_task_management_response *response)
2898{
2899 int rc;
2900
2901 switch (response->response_code) {
b17f0486
KB		 2902 case SOP_TMF_COMPLETE:
2903 case SOP_TMF_FUNCTION_SUCCEEDED:
6c223761
KB		 2904 rc = 0;
2905 break;
3406384b
MR		 2906 case SOP_TMF_REJECTED:
2907 rc = -EAGAIN;
2908 break;
6c223761
KB		 2909 default:
2910 rc = -EIO;
2911 break;
2912 }
2913
2914 return rc;
2915}
2916
2917static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info,
2918 struct pqi_queue_group *queue_group)
2919{
2920 unsigned int num_responses;
2921 pqi_index_t oq_pi;
2922 pqi_index_t oq_ci;
2923 struct pqi_io_request *io_request;
2924 struct pqi_io_response *response;
2925 u16 request_id;
2926
2927 num_responses = 0;
2928 oq_ci = queue_group->oq_ci_copy;
2929
2930 while (1) {
dac12fbc 2931 oq_pi = readl(queue_group->oq_pi);
6c223761
KB		 2932 if (oq_pi == oq_ci)
2933 break;
2934
2935 num_responses++;
2936 response = queue_group->oq_element_array +
2937 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
2938
2939 request_id = get_unaligned_le16(&response->request_id);
2940 WARN_ON(request_id >= ctrl_info->max_io_slots);
2941
2942 io_request = &ctrl_info->io_request_pool[request_id];
2943 WARN_ON(atomic_read(&io_request->refcount) == 0);
2944
2945 switch (response->header.iu_type) {
2946 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
2947 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2ba55c98
KB		 2948 if (io_request->scmd)
2949 io_request->scmd->result = 0;
2950 /* fall through */
6c223761
KB		 2951 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
2952 break;
b212c251
KB		 2953 case PQI_RESPONSE_IU_VENDOR_GENERAL:
2954 io_request->status =
2955 get_unaligned_le16(
2956 &((struct pqi_vendor_general_response *)
2957 response)->status);
2958 break;
6c223761
KB		 2959 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
2960 io_request->status =
2961 pqi_interpret_task_management_response(
2962 (void *)response);
2963 break;
2964 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
2965 pqi_aio_path_disabled(io_request);
2966 io_request->status = -EAGAIN;
2967 break;
2968 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2969 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2970 io_request->error_info = ctrl_info->error_buffer +
2971 (get_unaligned_le16(&response->error_index) *
2972 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
2973 pqi_process_io_error(response->header.iu_type,
2974 io_request);
2975 break;
2976 default:
2977 dev_err(&ctrl_info->pci_dev->dev,
2978 "unexpected IU type: 0x%x\n",
2979 response->header.iu_type);
6c223761
KB		 2980 break;
2981 }
2982
2983 io_request->io_complete_callback(io_request,
2984 io_request->context);
2985
2986 /*
2987 * Note that the I/O request structure CANNOT BE TOUCHED after
2988 * returning from the I/O completion callback!
2989 */
2990
2991 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
2992 }
2993
2994 if (num_responses) {
2995 queue_group->oq_ci_copy = oq_ci;
2996 writel(oq_ci, queue_group->oq_ci);
2997 }
2998
2999 return num_responses;
3000}
3001
3002static inline unsigned int pqi_num_elements_free(unsigned int pi,
df7a1fcf 3003 unsigned int ci, unsigned int elements_in_queue)
6c223761
KB		 3004{
3005 unsigned int num_elements_used;
3006
3007 if (pi >= ci)
3008 num_elements_used = pi - ci;
3009 else
3010 num_elements_used = elements_in_queue - ci + pi;
3011
3012 return elements_in_queue - num_elements_used - 1;
3013}
3014
98f87667 3015static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 3016 struct pqi_event_acknowledge_request *iu, size_t iu_length)
3017{
3018 pqi_index_t iq_pi;
3019 pqi_index_t iq_ci;
3020 unsigned long flags;
3021 void *next_element;
6c223761
KB		 3022 struct pqi_queue_group *queue_group;
3023
3024 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
3025 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
3026
6c223761
KB		 3027 while (1) {
3028 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
3029
3030 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
dac12fbc 3031 iq_ci = readl(queue_group->iq_ci[RAID_PATH]);
6c223761
KB		 3032
3033 if (pqi_num_elements_free(iq_pi, iq_ci,
3034 ctrl_info->num_elements_per_iq))
3035 break;
3036
3037 spin_unlock_irqrestore(
3038 &queue_group->submit_lock[RAID_PATH], flags);
3039
98f87667 3040 if (pqi_ctrl_offline(ctrl_info))
6c223761 3041 return;
6c223761
KB		 3042 }
3043
3044 next_element = queue_group->iq_element_array[RAID_PATH] +
3045 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3046
3047 memcpy(next_element, iu, iu_length);
3048
3049 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
6c223761
KB		 3050 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
3051
3052 /*
3053 * This write notifies the controller that an IU is available to be
3054 * processed.
3055 */
3056 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
3057
3058 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
6c223761
KB		 3059}
3060
3061static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
3062 struct pqi_event *event)
3063{
3064 struct pqi_event_acknowledge_request request;
3065
3066 memset(&request, 0, sizeof(request));
3067
3068 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
3069 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
3070 &request.header.iu_length);
3071 request.event_type = event->event_type;
3072 request.event_id = event->event_id;
3073 request.additional_event_id = event->additional_event_id;
3074
98f87667 3075 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
6c223761
KB		 3076}
3077
4fd22c13
MR		 3078#define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30
3079#define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1
3080
3081static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status(
3082 struct pqi_ctrl_info *ctrl_info)
6c223761 3083{
4fd22c13
MR		 3084 unsigned long timeout;
3085 u8 status;
6c223761 3086
4fd22c13 3087 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761 3088
4fd22c13
MR		 3089 while (1) {
3090 status = pqi_read_soft_reset_status(ctrl_info);
3091 if (status & PQI_SOFT_RESET_INITIATE)
3092 return RESET_INITIATE_DRIVER;
3093
3094 if (status & PQI_SOFT_RESET_ABORT)
3095 return RESET_ABORT;
3096
3097 if (time_after(jiffies, timeout)) {
3098 dev_err(&ctrl_info->pci_dev->dev,
3099 "timed out waiting for soft reset status\n");
3100 return RESET_TIMEDOUT;
3101 }
3102
3103 if (!sis_is_firmware_running(ctrl_info))
3104 return RESET_NORESPONSE;
3105
3106 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS);
3107 }
3108}
3109
3110static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info,
694c5d5b 3111 enum pqi_soft_reset_status reset_status)
4fd22c13
MR		 3112{
3113 int rc;
3114
3115 switch (reset_status) {
3116 case RESET_INITIATE_DRIVER:
3117 /* fall through */
3118 case RESET_TIMEDOUT:
3119 dev_info(&ctrl_info->pci_dev->dev,
3120 "resetting controller %u\n", ctrl_info->ctrl_id);
3121 sis_soft_reset(ctrl_info);
3122 /* fall through */
3123 case RESET_INITIATE_FIRMWARE:
3124 rc = pqi_ofa_ctrl_restart(ctrl_info);
3125 pqi_ofa_free_host_buffer(ctrl_info);
3126 dev_info(&ctrl_info->pci_dev->dev,
3127 "Online Firmware Activation for controller %u: %s\n",
3128 ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED");
3129 break;
3130 case RESET_ABORT:
3131 pqi_ofa_ctrl_unquiesce(ctrl_info);
3132 dev_info(&ctrl_info->pci_dev->dev,
3133 "Online Firmware Activation for controller %u: %s\n",
3134 ctrl_info->ctrl_id, "ABORTED");
3135 break;
3136 case RESET_NORESPONSE:
3137 pqi_ofa_free_host_buffer(ctrl_info);
3138 pqi_take_ctrl_offline(ctrl_info);
3139 break;
3140 }
3141}
3142
3143static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info,
3144 struct pqi_event *event)
3145{
3146 u16 event_id;
3147 enum pqi_soft_reset_status status;
3148
3149 event_id = get_unaligned_le16(&event->event_id);
3150
3151 mutex_lock(&ctrl_info->ofa_mutex);
3152
3153 if (event_id == PQI_EVENT_OFA_QUIESCE) {
3154 dev_info(&ctrl_info->pci_dev->dev,
694c5d5b
KB		 3155 "Received Online Firmware Activation quiesce event for controller %u\n",
3156 ctrl_info->ctrl_id);
4fd22c13
MR		 3157 pqi_ofa_ctrl_quiesce(ctrl_info);
3158 pqi_acknowledge_event(ctrl_info, event);
3159 if (ctrl_info->soft_reset_handshake_supported) {
3160 status = pqi_poll_for_soft_reset_status(ctrl_info);
3161 pqi_process_soft_reset(ctrl_info, status);
3162 } else {
3163 pqi_process_soft_reset(ctrl_info,
3164 RESET_INITIATE_FIRMWARE);
3165 }
3166
3167 } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3168 pqi_acknowledge_event(ctrl_info, event);
3169 pqi_ofa_setup_host_buffer(ctrl_info,
3170 le32_to_cpu(event->ofa_bytes_requested));
3171 pqi_ofa_host_memory_update(ctrl_info);
3172 } else if (event_id == PQI_EVENT_OFA_CANCELLED) {
3173 pqi_ofa_free_host_buffer(ctrl_info);
3174 pqi_acknowledge_event(ctrl_info, event);
3175 dev_info(&ctrl_info->pci_dev->dev,
694c5d5b
KB		 3176 "Online Firmware Activation(%u) cancel reason : %u\n",
3177 ctrl_info->ctrl_id, event->ofa_cancel_reason);
4fd22c13
MR		 3178 }
3179
3180 mutex_unlock(&ctrl_info->ofa_mutex);
3181}
3182
6c223761
KB		 3183static void pqi_event_worker(struct work_struct *work)
3184{
3185 unsigned int i;
3186 struct pqi_ctrl_info *ctrl_info;
6a50d6ad 3187 struct pqi_event *event;
6c223761
KB		 3188
3189 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
3190
7561a7e4
KB		 3191 pqi_ctrl_busy(ctrl_info);
3192 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
5f310425
KB		 3193 if (pqi_ctrl_offline(ctrl_info))
3194 goto out;
3195
3196 pqi_schedule_rescan_worker_delayed(ctrl_info);
7561a7e4 3197
6a50d6ad 3198 event = ctrl_info->events;
6c223761 3199 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
6a50d6ad
KB		 3200 if (event->pending) {
3201 event->pending = false;
4fd22c13
MR		 3202 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3203 pqi_ctrl_unbusy(ctrl_info);
3204 pqi_ofa_process_event(ctrl_info, event);
3205 return;
3206 }
6a50d6ad 3207 pqi_acknowledge_event(ctrl_info, event);
6c223761 3208 }
6a50d6ad 3209 event++;
6c223761
KB		 3210 }
3211
5f310425 3212out:
7561a7e4 3213 pqi_ctrl_unbusy(ctrl_info);
6c223761
KB		 3214}
3215
4fd22c13 3216#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ)
6c223761 3217
74a0f573 3218static void pqi_heartbeat_timer_handler(struct timer_list *t)
6c223761
KB		 3219{
3220 int num_interrupts;
98f87667 3221 u32 heartbeat_count;
74a0f573
KC		 3222 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t,
3223 heartbeat_timer);
6c223761 3224
98f87667
KB		 3225 pqi_check_ctrl_health(ctrl_info);
3226 if (pqi_ctrl_offline(ctrl_info))
061ef06a
KB		 3227 return;
3228
6c223761 3229 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
98f87667 3230 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
6c223761
KB		 3231
3232 if (num_interrupts == ctrl_info->previous_num_interrupts) {
98f87667
KB		 3233 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
3234 dev_err(&ctrl_info->pci_dev->dev,
3235 "no heartbeat detected - last heartbeat count: %u\n",
3236 heartbeat_count);
6c223761
KB		 3237 pqi_take_ctrl_offline(ctrl_info);
3238 return;
3239 }
6c223761 3240 } else {
98f87667 3241 ctrl_info->previous_num_interrupts = num_interrupts;
6c223761
KB		 3242 }
3243
98f87667 3244 ctrl_info->previous_heartbeat_count = heartbeat_count;
6c223761
KB		 3245 mod_timer(&ctrl_info->heartbeat_timer,
3246 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
3247}
3248
3249static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3250{
98f87667
KB		 3251 if (!ctrl_info->heartbeat_counter)
3252 return;
3253
6c223761
KB		 3254 ctrl_info->previous_num_interrupts =
3255 atomic_read(&ctrl_info->num_interrupts);
98f87667
KB		 3256 ctrl_info->previous_heartbeat_count =
3257 pqi_read_heartbeat_counter(ctrl_info);
6c223761 3258
6c223761
KB		 3259 ctrl_info->heartbeat_timer.expires =
3260 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
061ef06a 3261 add_timer(&ctrl_info->heartbeat_timer);
6c223761
KB		 3262}
3263
3264static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3265{
98f87667 3266 del_timer_sync(&ctrl_info->heartbeat_timer);
6c223761
KB		 3267}
3268
6a50d6ad 3269static inline int pqi_event_type_to_event_index(unsigned int event_type)
6c223761
KB		 3270{
3271 int index;
3272
6a50d6ad
KB		 3273 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
3274 if (event_type == pqi_supported_event_types[index])
3275 return index;
6c223761 3276
6a50d6ad
KB		 3277 return -1;
3278}
3279
3280static inline bool pqi_is_supported_event(unsigned int event_type)
3281{
3282 return pqi_event_type_to_event_index(event_type) != -1;
6c223761
KB		 3283}
3284
4fd22c13
MR		 3285static void pqi_ofa_capture_event_payload(struct pqi_event *event,
3286 struct pqi_event_response *response)
3287{
3288 u16 event_id;
3289
3290 event_id = get_unaligned_le16(&event->event_id);
3291
3292 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3293 if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3294 event->ofa_bytes_requested =
3295 response->data.ofa_memory_allocation.bytes_requested;
3296 } else if (event_id == PQI_EVENT_OFA_CANCELLED) {
3297 event->ofa_cancel_reason =
3298 response->data.ofa_cancelled.reason;
3299 }
3300 }
3301}
3302
6c223761
KB		 3303static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
3304{
3305 unsigned int num_events;
3306 pqi_index_t oq_pi;
3307 pqi_index_t oq_ci;
3308 struct pqi_event_queue *event_queue;
3309 struct pqi_event_response *response;
6a50d6ad 3310 struct pqi_event *event;
6c223761
KB		 3311 int event_index;
3312
3313 event_queue = &ctrl_info->event_queue;
3314 num_events = 0;
6c223761
KB		 3315 oq_ci = event_queue->oq_ci_copy;
3316
3317 while (1) {
dac12fbc 3318 oq_pi = readl(event_queue->oq_pi);
6c223761
KB		 3319 if (oq_pi == oq_ci)
3320 break;
3321
3322 num_events++;
3323 response = event_queue->oq_element_array +
3324 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
3325
3326 event_index =
3327 pqi_event_type_to_event_index(response->event_type);
3328
3329 if (event_index >= 0) {
3330 if (response->request_acknowlege) {
6a50d6ad
KB		 3331 event = &ctrl_info->events[event_index];
3332 event->pending = true;
3333 event->event_type = response->event_type;
3334 event->event_id = response->event_id;
3335 event->additional_event_id =
6c223761 3336 response->additional_event_id;
4fd22c13 3337 pqi_ofa_capture_event_payload(event, response);
6c223761
KB		 3338 }
3339 }
3340
3341 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
3342 }
3343
3344 if (num_events) {
3345 event_queue->oq_ci_copy = oq_ci;
3346 writel(oq_ci, event_queue->oq_ci);
98f87667 3347 schedule_work(&ctrl_info->event_work);
6c223761
KB		 3348 }
3349
3350 return num_events;
3351}
3352
061ef06a
KB		 3353#define PQI_LEGACY_INTX_MASK 0x1
3354
3355static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info,
694c5d5b 3356 bool enable_intx)
061ef06a
KB		 3357{
3358 u32 intx_mask;
3359 struct pqi_device_registers __iomem *pqi_registers;
3360 volatile void __iomem *register_addr;
3361
3362 pqi_registers = ctrl_info->pqi_registers;
3363
3364 if (enable_intx)
3365 register_addr = &pqi_registers->legacy_intx_mask_clear;
3366 else
3367 register_addr = &pqi_registers->legacy_intx_mask_set;
3368
3369 intx_mask = readl(register_addr);
3370 intx_mask |= PQI_LEGACY_INTX_MASK;
3371 writel(intx_mask, register_addr);
3372}
3373
3374static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3375 enum pqi_irq_mode new_mode)
3376{
3377 switch (ctrl_info->irq_mode) {
3378 case IRQ_MODE_MSIX:
3379 switch (new_mode) {
3380 case IRQ_MODE_MSIX:
3381 break;
3382 case IRQ_MODE_INTX:
3383 pqi_configure_legacy_intx(ctrl_info, true);
061ef06a
KB		 3384 sis_enable_intx(ctrl_info);
3385 break;
3386 case IRQ_MODE_NONE:
061ef06a
KB		 3387 break;
3388 }
3389 break;
3390 case IRQ_MODE_INTX:
3391 switch (new_mode) {
3392 case IRQ_MODE_MSIX:
3393 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3394 sis_enable_msix(ctrl_info);
3395 break;
3396 case IRQ_MODE_INTX:
3397 break;
3398 case IRQ_MODE_NONE:
3399 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3400 break;
3401 }
3402 break;
3403 case IRQ_MODE_NONE:
3404 switch (new_mode) {
3405 case IRQ_MODE_MSIX:
3406 sis_enable_msix(ctrl_info);
3407 break;
3408 case IRQ_MODE_INTX:
3409 pqi_configure_legacy_intx(ctrl_info, true);
3410 sis_enable_intx(ctrl_info);
3411 break;
3412 case IRQ_MODE_NONE:
3413 break;
3414 }
3415 break;
3416 }
3417
3418 ctrl_info->irq_mode = new_mode;
3419}
3420
3421#define PQI_LEGACY_INTX_PENDING 0x1
3422
3423static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3424{
3425 bool valid_irq;
3426 u32 intx_status;
3427
3428 switch (ctrl_info->irq_mode) {
3429 case IRQ_MODE_MSIX:
3430 valid_irq = true;
3431 break;
3432 case IRQ_MODE_INTX:
3433 intx_status =
3434 readl(&ctrl_info->pqi_registers->legacy_intx_status);
3435 if (intx_status & PQI_LEGACY_INTX_PENDING)
3436 valid_irq = true;
3437 else
3438 valid_irq = false;
3439 break;
3440 case IRQ_MODE_NONE:
3441 default:
3442 valid_irq = false;
3443 break;
3444 }
3445
3446 return valid_irq;
3447}
3448
6c223761
KB		 3449static irqreturn_t pqi_irq_handler(int irq, void *data)
3450{
3451 struct pqi_ctrl_info *ctrl_info;
3452 struct pqi_queue_group *queue_group;
3453 unsigned int num_responses_handled;
3454
3455 queue_group = data;
3456 ctrl_info = queue_group->ctrl_info;
3457
061ef06a 3458 if (!pqi_is_valid_irq(ctrl_info))
6c223761
KB		 3459 return IRQ_NONE;
3460
3461 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3462
3463 if (irq == ctrl_info->event_irq)
3464 num_responses_handled += pqi_process_event_intr(ctrl_info);
3465
3466 if (num_responses_handled)
3467 atomic_inc(&ctrl_info->num_interrupts);
3468
3469 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3470 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3471
3472 return IRQ_HANDLED;
3473}
3474
3475static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3476{
d91d7820 3477 struct pci_dev *pci_dev = ctrl_info->pci_dev;
6c223761
KB		 3478 int i;
3479 int rc;
3480
d91d7820 3481 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
6c223761
KB		 3482
3483 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
d91d7820 3484 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
52198226 3485 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
6c223761 3486 if (rc) {
d91d7820 3487 dev_err(&pci_dev->dev,
6c223761 3488 "irq %u init failed with error %d\n",
d91d7820 3489 pci_irq_vector(pci_dev, i), rc);
6c223761
KB		 3490 return rc;
3491 }
3492 ctrl_info->num_msix_vectors_initialized++;
3493 }
3494
3495 return 0;
3496}
3497
98bf061b
KB		 3498static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3499{
3500 int i;
3501
3502 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3503 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3504 &ctrl_info->queue_groups[i]);
3505
3506 ctrl_info->num_msix_vectors_initialized = 0;
3507}
3508
6c223761
KB		 3509static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3510{
98bf061b 3511 int num_vectors_enabled;
6c223761 3512
98bf061b 3513 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
52198226
CH		 3514 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3515 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
98bf061b 3516 if (num_vectors_enabled < 0) {
6c223761 3517 dev_err(&ctrl_info->pci_dev->dev,
98bf061b
KB		 3518 "MSI-X init failed with error %d\n",
3519 num_vectors_enabled);
3520 return num_vectors_enabled;
6c223761
KB		 3521 }
3522
98bf061b 3523 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
061ef06a 3524 ctrl_info->irq_mode = IRQ_MODE_MSIX;
6c223761
KB		 3525 return 0;
3526}
3527
98bf061b
KB		 3528static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3529{
3530 if (ctrl_info->num_msix_vectors_enabled) {
3531 pci_free_irq_vectors(ctrl_info->pci_dev);
3532 ctrl_info->num_msix_vectors_enabled = 0;
3533 }
3534}
3535
6c223761
KB		 3536static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3537{
3538 unsigned int i;
3539 size_t alloc_length;
3540 size_t element_array_length_per_iq;
3541 size_t element_array_length_per_oq;
3542 void *element_array;
dac12fbc 3543 void __iomem *next_queue_index;
6c223761
KB		 3544 void *aligned_pointer;
3545 unsigned int num_inbound_queues;
3546 unsigned int num_outbound_queues;
3547 unsigned int num_queue_indexes;
3548 struct pqi_queue_group *queue_group;
3549
3550 element_array_length_per_iq =
3551 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3552 ctrl_info->num_elements_per_iq;
3553 element_array_length_per_oq =
3554 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3555 ctrl_info->num_elements_per_oq;
3556 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3557 num_outbound_queues = ctrl_info->num_queue_groups;
3558 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3559
3560 aligned_pointer = NULL;
3561
3562 for (i = 0; i < num_inbound_queues; i++) {
3563 aligned_pointer = PTR_ALIGN(aligned_pointer,
3564 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3565 aligned_pointer += element_array_length_per_iq;
3566 }
3567
3568 for (i = 0; i < num_outbound_queues; i++) {
3569 aligned_pointer = PTR_ALIGN(aligned_pointer,
3570 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3571 aligned_pointer += element_array_length_per_oq;
3572 }
3573
3574 aligned_pointer = PTR_ALIGN(aligned_pointer,
3575 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3576 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3577 PQI_EVENT_OQ_ELEMENT_LENGTH;
3578
3579 for (i = 0; i < num_queue_indexes; i++) {
3580 aligned_pointer = PTR_ALIGN(aligned_pointer,
3581 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3582 aligned_pointer += sizeof(pqi_index_t);
3583 }
3584
3585 alloc_length = (size_t)aligned_pointer +
3586 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3587
e1d213bd
KB		 3588 alloc_length += PQI_EXTRA_SGL_MEMORY;
3589
6c223761 3590 ctrl_info->queue_memory_base =
750afb08
LC		 3591 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
3592 &ctrl_info->queue_memory_base_dma_handle,
3593 GFP_KERNEL);
6c223761 3594
d87d5474 3595 if (!ctrl_info->queue_memory_base)
6c223761 3596 return -ENOMEM;
6c223761
KB		 3597
3598 ctrl_info->queue_memory_length = alloc_length;
3599
3600 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3601 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3602
3603 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3604 queue_group = &ctrl_info->queue_groups[i];
3605 queue_group->iq_element_array[RAID_PATH] = element_array;
3606 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3607 ctrl_info->queue_memory_base_dma_handle +
3608 (element_array - ctrl_info->queue_memory_base);
3609 element_array += element_array_length_per_iq;
3610 element_array = PTR_ALIGN(element_array,
3611 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3612 queue_group->iq_element_array[AIO_PATH] = element_array;
3613 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3614 ctrl_info->queue_memory_base_dma_handle +
3615 (element_array - ctrl_info->queue_memory_base);
3616 element_array += element_array_length_per_iq;
3617 element_array = PTR_ALIGN(element_array,
3618 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3619 }
3620
3621 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3622 queue_group = &ctrl_info->queue_groups[i];
3623 queue_group->oq_element_array = element_array;
3624 queue_group->oq_element_array_bus_addr =
3625 ctrl_info->queue_memory_base_dma_handle +
3626 (element_array - ctrl_info->queue_memory_base);
3627 element_array += element_array_length_per_oq;
3628 element_array = PTR_ALIGN(element_array,
3629 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3630 }
3631
3632 ctrl_info->event_queue.oq_element_array = element_array;
3633 ctrl_info->event_queue.oq_element_array_bus_addr =
3634 ctrl_info->queue_memory_base_dma_handle +
3635 (element_array - ctrl_info->queue_memory_base);
3636 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3637 PQI_EVENT_OQ_ELEMENT_LENGTH;
3638
dac12fbc 3639 next_queue_index = (void __iomem *)PTR_ALIGN(element_array,
6c223761
KB		 3640 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3641
3642 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3643 queue_group = &ctrl_info->queue_groups[i];
3644 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3645 queue_group->iq_ci_bus_addr[RAID_PATH] =
3646 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3647 (next_queue_index -
3648 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3649 next_queue_index += sizeof(pqi_index_t);
3650 next_queue_index = PTR_ALIGN(next_queue_index,
3651 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3652 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3653 queue_group->iq_ci_bus_addr[AIO_PATH] =
3654 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3655 (next_queue_index -
3656 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3657 next_queue_index += sizeof(pqi_index_t);
3658 next_queue_index = PTR_ALIGN(next_queue_index,
3659 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3660 queue_group->oq_pi = next_queue_index;
3661 queue_group->oq_pi_bus_addr =
3662 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3663 (next_queue_index -
3664 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3665 next_queue_index += sizeof(pqi_index_t);
3666 next_queue_index = PTR_ALIGN(next_queue_index,
3667 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3668 }
3669
3670 ctrl_info->event_queue.oq_pi = next_queue_index;
3671 ctrl_info->event_queue.oq_pi_bus_addr =
3672 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3673 (next_queue_index -
3674 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3675
3676 return 0;
3677}
3678
3679static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3680{
3681 unsigned int i;
3682 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3683 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3684
3685 /*
3686 * Initialize the backpointers to the controller structure in
3687 * each operational queue group structure.
3688 */
3689 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3690 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3691
3692 /*
3693 * Assign IDs to all operational queues. Note that the IDs
3694 * assigned to operational IQs are independent of the IDs
3695 * assigned to operational OQs.
3696 */
3697 ctrl_info->event_queue.oq_id = next_oq_id++;
3698 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3699 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3700 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3701 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3702 }
3703
3704 /*
3705 * Assign MSI-X table entry indexes to all queues. Note that the
3706 * interrupt for the event queue is shared with the first queue group.
3707 */
3708 ctrl_info->event_queue.int_msg_num = 0;
3709 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3710 ctrl_info->queue_groups[i].int_msg_num = i;
3711
3712 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3713 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3714 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3715 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3716 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3717 }
3718}
3719
3720static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3721{
3722 size_t alloc_length;
3723 struct pqi_admin_queues_aligned *admin_queues_aligned;
3724 struct pqi_admin_queues *admin_queues;
3725
3726 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3727 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3728
3729 ctrl_info->admin_queue_memory_base =
750afb08
LC		 3730 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
3731 &ctrl_info->admin_queue_memory_base_dma_handle,
3732 GFP_KERNEL);
6c223761
KB		 3733
3734 if (!ctrl_info->admin_queue_memory_base)
3735 return -ENOMEM;
3736
3737 ctrl_info->admin_queue_memory_length = alloc_length;
3738
3739 admin_queues = &ctrl_info->admin_queues;
3740 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3741 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3742 admin_queues->iq_element_array =
3743 &admin_queues_aligned->iq_element_array;
3744 admin_queues->oq_element_array =
3745 &admin_queues_aligned->oq_element_array;
3746 admin_queues->iq_ci = &admin_queues_aligned->iq_ci;
dac12fbc
KB		 3747 admin_queues->oq_pi =
3748 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi;
6c223761
KB		 3749
3750 admin_queues->iq_element_array_bus_addr =
3751 ctrl_info->admin_queue_memory_base_dma_handle +
3752 (admin_queues->iq_element_array -
3753 ctrl_info->admin_queue_memory_base);
3754 admin_queues->oq_element_array_bus_addr =
3755 ctrl_info->admin_queue_memory_base_dma_handle +
3756 (admin_queues->oq_element_array -
3757 ctrl_info->admin_queue_memory_base);
3758 admin_queues->iq_ci_bus_addr =
3759 ctrl_info->admin_queue_memory_base_dma_handle +
3760 ((void *)admin_queues->iq_ci -
3761 ctrl_info->admin_queue_memory_base);
3762 admin_queues->oq_pi_bus_addr =
3763 ctrl_info->admin_queue_memory_base_dma_handle +
dac12fbc
KB		 3764 ((void __iomem *)admin_queues->oq_pi -
3765 (void __iomem *)ctrl_info->admin_queue_memory_base);
6c223761
KB		 3766
3767 return 0;
3768}
3769
4fd22c13 3770#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ
6c223761
KB		 3771#define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3772
3773static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3774{
3775 struct pqi_device_registers __iomem *pqi_registers;
3776 struct pqi_admin_queues *admin_queues;
3777 unsigned long timeout;
3778 u8 status;
3779 u32 reg;
3780
3781 pqi_registers = ctrl_info->pqi_registers;
3782 admin_queues = &ctrl_info->admin_queues;
3783
3784 writeq((u64)admin_queues->iq_element_array_bus_addr,
3785 &pqi_registers->admin_iq_element_array_addr);
3786 writeq((u64)admin_queues->oq_element_array_bus_addr,
3787 &pqi_registers->admin_oq_element_array_addr);
3788 writeq((u64)admin_queues->iq_ci_bus_addr,
3789 &pqi_registers->admin_iq_ci_addr);
3790 writeq((u64)admin_queues->oq_pi_bus_addr,
3791 &pqi_registers->admin_oq_pi_addr);
3792
3793 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
e655d469 3794 (PQI_ADMIN_OQ_NUM_ELEMENTS << 8) |
6c223761
KB		 3795 (admin_queues->int_msg_num << 16);
3796 writel(reg, &pqi_registers->admin_iq_num_elements);
3797 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3798 &pqi_registers->function_and_status_code);
3799
3800 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3801 while (1) {
3802 status = readb(&pqi_registers->function_and_status_code);
3803 if (status == PQI_STATUS_IDLE)
3804 break;
3805 if (time_after(jiffies, timeout))
3806 return -ETIMEDOUT;
3807 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
3808 }
3809
3810 /*
3811 * The offset registers are not initialized to the correct
3812 * offsets until *after* the create admin queue pair command
3813 * completes successfully.
3814 */
3815 admin_queues->iq_pi = ctrl_info->iomem_base +
3816 PQI_DEVICE_REGISTERS_OFFSET +
3817 readq(&pqi_registers->admin_iq_pi_offset);
3818 admin_queues->oq_ci = ctrl_info->iomem_base +
3819 PQI_DEVICE_REGISTERS_OFFSET +
3820 readq(&pqi_registers->admin_oq_ci_offset);
3821
3822 return 0;
3823}
3824
3825static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
3826 struct pqi_general_admin_request *request)
3827{
3828 struct pqi_admin_queues *admin_queues;
3829 void *next_element;
3830 pqi_index_t iq_pi;
3831
3832 admin_queues = &ctrl_info->admin_queues;
3833 iq_pi = admin_queues->iq_pi_copy;
3834
3835 next_element = admin_queues->iq_element_array +
3836 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
3837
3838 memcpy(next_element, request, sizeof(*request));
3839
3840 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
3841 admin_queues->iq_pi_copy = iq_pi;
3842
3843 /*
3844 * This write notifies the controller that an IU is available to be
3845 * processed.
3846 */
3847 writel(iq_pi, admin_queues->iq_pi);
3848}
3849
13bede67
KB		 3850#define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
3851
6c223761
KB		 3852static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
3853 struct pqi_general_admin_response *response)
3854{
3855 struct pqi_admin_queues *admin_queues;
3856 pqi_index_t oq_pi;
3857 pqi_index_t oq_ci;
3858 unsigned long timeout;
3859
3860 admin_queues = &ctrl_info->admin_queues;
3861 oq_ci = admin_queues->oq_ci_copy;
3862
4fd22c13 3863 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761
KB		 3864
3865 while (1) {
dac12fbc 3866 oq_pi = readl(admin_queues->oq_pi);
6c223761
KB		 3867 if (oq_pi != oq_ci)
3868 break;
3869 if (time_after(jiffies, timeout)) {
3870 dev_err(&ctrl_info->pci_dev->dev,
3871 "timed out waiting for admin response\n");
3872 return -ETIMEDOUT;
3873 }
13bede67
KB		 3874 if (!sis_is_firmware_running(ctrl_info))
3875 return -ENXIO;
6c223761
KB		 3876 usleep_range(1000, 2000);
3877 }
3878
3879 memcpy(response, admin_queues->oq_element_array +
3880 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
3881
3882 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
3883 admin_queues->oq_ci_copy = oq_ci;
3884 writel(oq_ci, admin_queues->oq_ci);
3885
3886 return 0;
3887}
3888
3889static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
3890 struct pqi_queue_group *queue_group, enum pqi_io_path path,
3891 struct pqi_io_request *io_request)
3892{
3893 struct pqi_io_request *next;
3894 void *next_element;
3895 pqi_index_t iq_pi;
3896 pqi_index_t iq_ci;
3897 size_t iu_length;
3898 unsigned long flags;
3899 unsigned int num_elements_needed;
3900 unsigned int num_elements_to_end_of_queue;
3901 size_t copy_count;
3902 struct pqi_iu_header *request;
3903
3904 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
3905
376fb880
KB		 3906 if (io_request) {
3907 io_request->queue_group = queue_group;
6c223761
KB		 3908 list_add_tail(&io_request->request_list_entry,
3909 &queue_group->request_list[path]);
376fb880 3910 }
6c223761
KB		 3911
3912 iq_pi = queue_group->iq_pi_copy[path];
3913
3914 list_for_each_entry_safe(io_request, next,
3915 &queue_group->request_list[path], request_list_entry) {
3916
3917 request = io_request->iu;
3918
3919 iu_length = get_unaligned_le16(&request->iu_length) +
3920 PQI_REQUEST_HEADER_LENGTH;
3921 num_elements_needed =
3922 DIV_ROUND_UP(iu_length,
3923 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3924
dac12fbc 3925 iq_ci = readl(queue_group->iq_ci[path]);
6c223761
KB		 3926
3927 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
3928 ctrl_info->num_elements_per_iq))
3929 break;
3930
3931 put_unaligned_le16(queue_group->oq_id,
3932 &request->response_queue_id);
3933
3934 next_element = queue_group->iq_element_array[path] +
3935 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3936
3937 num_elements_to_end_of_queue =
3938 ctrl_info->num_elements_per_iq - iq_pi;
3939
3940 if (num_elements_needed <= num_elements_to_end_of_queue) {
3941 memcpy(next_element, request, iu_length);
3942 } else {
3943 copy_count = num_elements_to_end_of_queue *
3944 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
3945 memcpy(next_element, request, copy_count);
3946 memcpy(queue_group->iq_element_array[path],
3947 (u8 *)request + copy_count,
3948 iu_length - copy_count);
3949 }
3950
3951 iq_pi = (iq_pi + num_elements_needed) %
3952 ctrl_info->num_elements_per_iq;
3953
3954 list_del(&io_request->request_list_entry);
3955 }
3956
3957 if (iq_pi != queue_group->iq_pi_copy[path]) {
3958 queue_group->iq_pi_copy[path] = iq_pi;
3959 /*
3960 * This write notifies the controller that one or more IUs are
3961 * available to be processed.
3962 */
3963 writel(iq_pi, queue_group->iq_pi[path]);
3964 }
3965
3966 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
3967}
3968
1f37e992
KB		 3969#define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
3970
3971static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
3972 struct completion *wait)
3973{
3974 int rc;
1f37e992
KB		 3975
3976 while (1) {
3977 if (wait_for_completion_io_timeout(wait,
4fd22c13 3978 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) {
1f37e992
KB		 3979 rc = 0;
3980 break;
3981 }
3982
3983 pqi_check_ctrl_health(ctrl_info);
3984 if (pqi_ctrl_offline(ctrl_info)) {
3985 rc = -ENXIO;
3986 break;
3987 }
1f37e992
KB		 3988 }
3989
3990 return rc;
3991}
3992
6c223761
KB		 3993static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
3994 void *context)
3995{
3996 struct completion *waiting = context;
3997
3998 complete(waiting);
3999}
4000
694c5d5b
KB		 4001static int pqi_process_raid_io_error_synchronous(
4002 struct pqi_raid_error_info *error_info)
26b390ab
KB		 4003{
4004 int rc = -EIO;
4005
4006 switch (error_info->data_out_result) {
4007 case PQI_DATA_IN_OUT_GOOD:
4008 if (error_info->status == SAM_STAT_GOOD)
4009 rc = 0;
4010 break;
4011 case PQI_DATA_IN_OUT_UNDERFLOW:
4012 if (error_info->status == SAM_STAT_GOOD ||
4013 error_info->status == SAM_STAT_CHECK_CONDITION)
4014 rc = 0;
4015 break;
4016 case PQI_DATA_IN_OUT_ABORTED:
4017 rc = PQI_CMD_STATUS_ABORTED;
4018 break;
4019 }
4020
4021 return rc;
4022}
4023
6c223761
KB		 4024static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
4025 struct pqi_iu_header *request, unsigned int flags,
4026 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
4027{
957c5ab1 4028 int rc = 0;
6c223761
KB		 4029 struct pqi_io_request *io_request;
4030 unsigned long start_jiffies;
4031 unsigned long msecs_blocked;
4032 size_t iu_length;
957c5ab1 4033 DECLARE_COMPLETION_ONSTACK(wait);
6c223761
KB		 4034
4035 /*
4036 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
4037 * are mutually exclusive.
4038 */
4039
4040 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
4041 if (down_interruptible(&ctrl_info->sync_request_sem))
4042 return -ERESTARTSYS;
4043 } else {
4044 if (timeout_msecs == NO_TIMEOUT) {
4045 down(&ctrl_info->sync_request_sem);
4046 } else {
4047 start_jiffies = jiffies;
4048 if (down_timeout(&ctrl_info->sync_request_sem,
4049 msecs_to_jiffies(timeout_msecs)))
4050 return -ETIMEDOUT;
4051 msecs_blocked =
4052 jiffies_to_msecs(jiffies - start_jiffies);
cc8f5260
DC		 4053 if (msecs_blocked >= timeout_msecs) {
4054 rc = -ETIMEDOUT;
4055 goto out;
4056 }
6c223761
KB		 4057 timeout_msecs -= msecs_blocked;
4058 }
4059 }
4060
7561a7e4
KB		 4061 pqi_ctrl_busy(ctrl_info);
4062 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
4063 if (timeout_msecs == 0) {
957c5ab1 4064 pqi_ctrl_unbusy(ctrl_info);
7561a7e4
KB		 4065 rc = -ETIMEDOUT;
4066 goto out;
4067 }
4068
376fb880 4069 if (pqi_ctrl_offline(ctrl_info)) {
957c5ab1 4070 pqi_ctrl_unbusy(ctrl_info);
376fb880
KB		 4071 rc = -ENXIO;
4072 goto out;
4073 }
4074
0530736e
KB		 4075 atomic_inc(&ctrl_info->sync_cmds_outstanding);
4076
6c223761
KB		 4077 io_request = pqi_alloc_io_request(ctrl_info);
4078
4079 put_unaligned_le16(io_request->index,
4080 &(((struct pqi_raid_path_request *)request)->request_id));
4081
4082 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
4083 ((struct pqi_raid_path_request *)request)->error_index =
4084 ((struct pqi_raid_path_request *)request)->request_id;
4085
4086 iu_length = get_unaligned_le16(&request->iu_length) +
4087 PQI_REQUEST_HEADER_LENGTH;
4088 memcpy(io_request->iu, request, iu_length);
4089
957c5ab1
KB		 4090 io_request->io_complete_callback = pqi_raid_synchronous_complete;
4091 io_request->context = &wait;
4092
4093 pqi_start_io(ctrl_info,
4094 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
4095 io_request);
4096
4097 pqi_ctrl_unbusy(ctrl_info);
4098
4099 if (timeout_msecs == NO_TIMEOUT) {
4100 pqi_wait_for_completion_io(ctrl_info, &wait);
4101 } else {
4102 if (!wait_for_completion_io_timeout(&wait,
4103 msecs_to_jiffies(timeout_msecs))) {
4104 dev_warn(&ctrl_info->pci_dev->dev,
4105 "command timed out\n");
4106 rc = -ETIMEDOUT;
4107 }
4108 }
6c223761
KB		 4109
4110 if (error_info) {
4111 if (io_request->error_info)
4112 memcpy(error_info, io_request->error_info,
4113 sizeof(*error_info));
4114 else
4115 memset(error_info, 0, sizeof(*error_info));
4116 } else if (rc == 0 && io_request->error_info) {
26b390ab
KB		 4117 rc = pqi_process_raid_io_error_synchronous(
4118 io_request->error_info);
6c223761
KB		 4119 }
4120
4121 pqi_free_io_request(io_request);
4122
0530736e 4123 atomic_dec(&ctrl_info->sync_cmds_outstanding);
7561a7e4 4124out:
6c223761
KB		 4125 up(&ctrl_info->sync_request_sem);
4126
4127 return rc;
4128}
4129
4130static int pqi_validate_admin_response(
4131 struct pqi_general_admin_response *response, u8 expected_function_code)
4132{
4133 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
4134 return -EINVAL;
4135
4136 if (get_unaligned_le16(&response->header.iu_length) !=
4137 PQI_GENERAL_ADMIN_IU_LENGTH)
4138 return -EINVAL;
4139
4140 if (response->function_code != expected_function_code)
4141 return -EINVAL;
4142
4143 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
4144 return -EINVAL;
4145
4146 return 0;
4147}
4148
4149static int pqi_submit_admin_request_synchronous(
4150 struct pqi_ctrl_info *ctrl_info,
4151 struct pqi_general_admin_request *request,
4152 struct pqi_general_admin_response *response)
4153{
4154 int rc;
4155
4156 pqi_submit_admin_request(ctrl_info, request);
4157
4158 rc = pqi_poll_for_admin_response(ctrl_info, response);
4159
4160 if (rc == 0)
4161 rc = pqi_validate_admin_response(response,
4162 request->function_code);
4163
4164 return rc;
4165}
4166
4167static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
4168{
4169 int rc;
4170 struct pqi_general_admin_request request;
4171 struct pqi_general_admin_response response;
4172 struct pqi_device_capability *capability;
4173 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
4174
4175 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
4176 if (!capability)
4177 return -ENOMEM;
4178
4179 memset(&request, 0, sizeof(request));
4180
4181 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4182 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4183 &request.header.iu_length);
4184 request.function_code =
4185 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
4186 put_unaligned_le32(sizeof(*capability),
4187 &request.data.report_device_capability.buffer_length);
4188
4189 rc = pqi_map_single(ctrl_info->pci_dev,
4190 &request.data.report_device_capability.sg_descriptor,
4191 capability, sizeof(*capability),
6917a9cc 4192 DMA_FROM_DEVICE);
6c223761
KB		 4193 if (rc)
4194 goto out;
4195
4196 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4197 &response);
4198
4199 pqi_pci_unmap(ctrl_info->pci_dev,
4200 &request.data.report_device_capability.sg_descriptor, 1,
6917a9cc 4201 DMA_FROM_DEVICE);
6c223761
KB		 4202
4203 if (rc)
4204 goto out;
4205
4206 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
4207 rc = -EIO;
4208 goto out;
4209 }
4210
4211 ctrl_info->max_inbound_queues =
4212 get_unaligned_le16(&capability->max_inbound_queues);
4213 ctrl_info->max_elements_per_iq =
4214 get_unaligned_le16(&capability->max_elements_per_iq);
4215 ctrl_info->max_iq_element_length =
4216 get_unaligned_le16(&capability->max_iq_element_length)
4217 * 16;
4218 ctrl_info->max_outbound_queues =
4219 get_unaligned_le16(&capability->max_outbound_queues);
4220 ctrl_info->max_elements_per_oq =
4221 get_unaligned_le16(&capability->max_elements_per_oq);
4222 ctrl_info->max_oq_element_length =
4223 get_unaligned_le16(&capability->max_oq_element_length)
4224 * 16;
4225
4226 sop_iu_layer_descriptor =
4227 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
4228
4229 ctrl_info->max_inbound_iu_length_per_firmware =
4230 get_unaligned_le16(
4231 &sop_iu_layer_descriptor->max_inbound_iu_length);
4232 ctrl_info->inbound_spanning_supported =
4233 sop_iu_layer_descriptor->inbound_spanning_supported;
4234 ctrl_info->outbound_spanning_supported =
4235 sop_iu_layer_descriptor->outbound_spanning_supported;
4236
4237out:
4238 kfree(capability);
4239
4240 return rc;
4241}
4242
4243static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
4244{
4245 if (ctrl_info->max_iq_element_length <
4246 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4247 dev_err(&ctrl_info->pci_dev->dev,
4248 "max. inbound queue element length of %d is less than the required length of %d\n",
4249 ctrl_info->max_iq_element_length,
4250 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4251 return -EINVAL;
4252 }
4253
4254 if (ctrl_info->max_oq_element_length <
4255 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
4256 dev_err(&ctrl_info->pci_dev->dev,
4257 "max. outbound queue element length of %d is less than the required length of %d\n",
4258 ctrl_info->max_oq_element_length,
4259 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
4260 return -EINVAL;
4261 }
4262
4263 if (ctrl_info->max_inbound_iu_length_per_firmware <
4264 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4265 dev_err(&ctrl_info->pci_dev->dev,
4266 "max. inbound IU length of %u is less than the min. required length of %d\n",
4267 ctrl_info->max_inbound_iu_length_per_firmware,
4268 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4269 return -EINVAL;
4270 }
4271
77668f41
KB		 4272 if (!ctrl_info->inbound_spanning_supported) {
4273 dev_err(&ctrl_info->pci_dev->dev,
4274 "the controller does not support inbound spanning\n");
4275 return -EINVAL;
4276 }
4277
4278 if (ctrl_info->outbound_spanning_supported) {
4279 dev_err(&ctrl_info->pci_dev->dev,
4280 "the controller supports outbound spanning but this driver does not\n");
4281 return -EINVAL;
4282 }
4283
6c223761
KB		 4284 return 0;
4285}
4286
6c223761
KB		 4287static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
4288{
4289 int rc;
4290 struct pqi_event_queue *event_queue;
4291 struct pqi_general_admin_request request;
4292 struct pqi_general_admin_response response;
4293
4294 event_queue = &ctrl_info->event_queue;
4295
4296 /*
4297 * Create OQ (Outbound Queue - device to host queue) to dedicate
4298 * to events.
4299 */
4300 memset(&request, 0, sizeof(request));
4301 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4302 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4303 &request.header.iu_length);
4304 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4305 put_unaligned_le16(event_queue->oq_id,
4306 &request.data.create_operational_oq.queue_id);
4307 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
4308 &request.data.create_operational_oq.element_array_addr);
4309 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
4310 &request.data.create_operational_oq.pi_addr);
4311 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
4312 &request.data.create_operational_oq.num_elements);
4313 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
4314 &request.data.create_operational_oq.element_length);
4315 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4316 put_unaligned_le16(event_queue->int_msg_num,
4317 &request.data.create_operational_oq.int_msg_num);
4318
4319 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4320 &response);
4321 if (rc)
4322 return rc;
4323
4324 event_queue->oq_ci = ctrl_info->iomem_base +
4325 PQI_DEVICE_REGISTERS_OFFSET +
4326 get_unaligned_le64(
4327 &response.data.create_operational_oq.oq_ci_offset);
4328
4329 return 0;
4330}
4331
061ef06a
KB		 4332static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
4333 unsigned int group_number)
6c223761 4334{
6c223761
KB		 4335 int rc;
4336 struct pqi_queue_group *queue_group;
4337 struct pqi_general_admin_request request;
4338 struct pqi_general_admin_response response;
4339
061ef06a 4340 queue_group = &ctrl_info->queue_groups[group_number];
6c223761
KB		 4341
4342 /*
4343 * Create IQ (Inbound Queue - host to device queue) for
4344 * RAID path.
4345 */
4346 memset(&request, 0, sizeof(request));
4347 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4348 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4349 &request.header.iu_length);
4350 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4351 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
4352 &request.data.create_operational_iq.queue_id);
4353 put_unaligned_le64(
4354 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
4355 &request.data.create_operational_iq.element_array_addr);
4356 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
4357 &request.data.create_operational_iq.ci_addr);
4358 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4359 &request.data.create_operational_iq.num_elements);
4360 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4361 &request.data.create_operational_iq.element_length);
4362 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4363
4364 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4365 &response);
4366 if (rc) {
4367 dev_err(&ctrl_info->pci_dev->dev,
4368 "error creating inbound RAID queue\n");
4369 return rc;
4370 }
4371
4372 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
4373 PQI_DEVICE_REGISTERS_OFFSET +
4374 get_unaligned_le64(
4375 &response.data.create_operational_iq.iq_pi_offset);
4376
4377 /*
4378 * Create IQ (Inbound Queue - host to device queue) for
4379 * Advanced I/O (AIO) path.
4380 */
4381 memset(&request, 0, sizeof(request));
4382 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4383 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4384 &request.header.iu_length);
4385 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4386 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4387 &request.data.create_operational_iq.queue_id);
4388 put_unaligned_le64((u64)queue_group->
4389 iq_element_array_bus_addr[AIO_PATH],
4390 &request.data.create_operational_iq.element_array_addr);
4391 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4392 &request.data.create_operational_iq.ci_addr);
4393 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4394 &request.data.create_operational_iq.num_elements);
4395 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4396 &request.data.create_operational_iq.element_length);
4397 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4398
4399 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4400 &response);
4401 if (rc) {
4402 dev_err(&ctrl_info->pci_dev->dev,
4403 "error creating inbound AIO queue\n");
339faa81 4404 return rc;
6c223761
KB		 4405 }
4406
4407 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4408 PQI_DEVICE_REGISTERS_OFFSET +
4409 get_unaligned_le64(
4410 &response.data.create_operational_iq.iq_pi_offset);
4411
4412 /*
4413 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4414 * assumed to be for RAID path I/O unless we change the queue's
4415 * property.
4416 */
4417 memset(&request, 0, sizeof(request));
4418 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4419 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4420 &request.header.iu_length);
4421 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4422 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4423 &request.data.change_operational_iq_properties.queue_id);
4424 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4425 &request.data.change_operational_iq_properties.vendor_specific);
4426
4427 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4428 &response);
4429 if (rc) {
4430 dev_err(&ctrl_info->pci_dev->dev,
4431 "error changing queue property\n");
339faa81 4432 return rc;
6c223761
KB		 4433 }
4434
4435 /*
4436 * Create OQ (Outbound Queue - device to host queue).
4437 */
4438 memset(&request, 0, sizeof(request));
4439 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4440 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4441 &request.header.iu_length);
4442 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4443 put_unaligned_le16(queue_group->oq_id,
4444 &request.data.create_operational_oq.queue_id);
4445 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4446 &request.data.create_operational_oq.element_array_addr);
4447 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4448 &request.data.create_operational_oq.pi_addr);
4449 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4450 &request.data.create_operational_oq.num_elements);
4451 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4452 &request.data.create_operational_oq.element_length);
4453 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4454 put_unaligned_le16(queue_group->int_msg_num,
4455 &request.data.create_operational_oq.int_msg_num);
4456
4457 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4458 &response);
4459 if (rc) {
4460 dev_err(&ctrl_info->pci_dev->dev,
4461 "error creating outbound queue\n");
339faa81 4462 return rc;
6c223761
KB		 4463 }
4464
4465 queue_group->oq_ci = ctrl_info->iomem_base +
4466 PQI_DEVICE_REGISTERS_OFFSET +
4467 get_unaligned_le64(
4468 &response.data.create_operational_oq.oq_ci_offset);
4469
6c223761 4470 return 0;
6c223761
KB		 4471}
4472
4473static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4474{
4475 int rc;
4476 unsigned int i;
4477
4478 rc = pqi_create_event_queue(ctrl_info);
4479 if (rc) {
4480 dev_err(&ctrl_info->pci_dev->dev,
4481 "error creating event queue\n");
4482 return rc;
4483 }
4484
4485 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
061ef06a 4486 rc = pqi_create_queue_group(ctrl_info, i);
6c223761
KB		 4487 if (rc) {
4488 dev_err(&ctrl_info->pci_dev->dev,
4489 "error creating queue group number %u/%u\n",
4490 i, ctrl_info->num_queue_groups);
4491 return rc;
4492 }
4493 }
4494
4495 return 0;
4496}
4497
4498#define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4499 (offsetof(struct pqi_event_config, descriptors) + \
4500 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4501
6a50d6ad
KB		 4502static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4503 bool enable_events)
6c223761
KB		 4504{
4505 int rc;
4506 unsigned int i;
4507 struct pqi_event_config *event_config;
6a50d6ad 4508 struct pqi_event_descriptor *event_descriptor;
6c223761
KB		 4509 struct pqi_general_management_request request;
4510
4511 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4512 GFP_KERNEL);
4513 if (!event_config)
4514 return -ENOMEM;
4515
4516 memset(&request, 0, sizeof(request));
4517
4518 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4519 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4520 data.report_event_configuration.sg_descriptors[1]) -
4521 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4522 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4523 &request.data.report_event_configuration.buffer_length);
4524
4525 rc = pqi_map_single(ctrl_info->pci_dev,
4526 request.data.report_event_configuration.sg_descriptors,
4527 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
6917a9cc 4528 DMA_FROM_DEVICE);
6c223761
KB		 4529 if (rc)
4530 goto out;
4531
4532 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4533 0, NULL, NO_TIMEOUT);
4534
4535 pqi_pci_unmap(ctrl_info->pci_dev,
4536 request.data.report_event_configuration.sg_descriptors, 1,
6917a9cc 4537 DMA_FROM_DEVICE);
6c223761
KB		 4538
4539 if (rc)
4540 goto out;
4541
6a50d6ad
KB		 4542 for (i = 0; i < event_config->num_event_descriptors; i++) {
4543 event_descriptor = &event_config->descriptors[i];
4544 if (enable_events &&
4545 pqi_is_supported_event(event_descriptor->event_type))
4546 put_unaligned_le16(ctrl_info->event_queue.oq_id,
4547 &event_descriptor->oq_id);
4548 else
4549 put_unaligned_le16(0, &event_descriptor->oq_id);
4550 }
6c223761
KB		 4551
4552 memset(&request, 0, sizeof(request));
4553
4554 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4555 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4556 data.report_event_configuration.sg_descriptors[1]) -
4557 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4558 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4559 &request.data.report_event_configuration.buffer_length);
4560
4561 rc = pqi_map_single(ctrl_info->pci_dev,
4562 request.data.report_event_configuration.sg_descriptors,
4563 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
6917a9cc 4564 DMA_TO_DEVICE);
6c223761
KB		 4565 if (rc)
4566 goto out;
4567
4568 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4569 NULL, NO_TIMEOUT);
4570
4571 pqi_pci_unmap(ctrl_info->pci_dev,
4572 request.data.report_event_configuration.sg_descriptors, 1,
6917a9cc 4573 DMA_TO_DEVICE);
6c223761
KB		 4574
4575out:
4576 kfree(event_config);
4577
4578 return rc;
4579}
4580
6a50d6ad
KB		 4581static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4582{
4583 return pqi_configure_events(ctrl_info, true);
4584}
4585
4586static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4587{
4588 return pqi_configure_events(ctrl_info, false);
4589}
4590
6c223761
KB		 4591static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4592{
4593 unsigned int i;
4594 struct device *dev;
4595 size_t sg_chain_buffer_length;
4596 struct pqi_io_request *io_request;
4597
4598 if (!ctrl_info->io_request_pool)
4599 return;
4600
4601 dev = &ctrl_info->pci_dev->dev;
4602 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4603 io_request = ctrl_info->io_request_pool;
4604
4605 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4606 kfree(io_request->iu);
4607 if (!io_request->sg_chain_buffer)
4608 break;
4609 dma_free_coherent(dev, sg_chain_buffer_length,
4610 io_request->sg_chain_buffer,
4611 io_request->sg_chain_buffer_dma_handle);
4612 io_request++;
4613 }
4614
4615 kfree(ctrl_info->io_request_pool);
4616 ctrl_info->io_request_pool = NULL;
4617}
4618
4619static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4620{
6c223761 4621
694c5d5b
KB		 4622 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev,
4623 ctrl_info->error_buffer_length,
4624 &ctrl_info->error_buffer_dma_handle,
4625 GFP_KERNEL);
6c223761
KB		 4626 if (!ctrl_info->error_buffer)
4627 return -ENOMEM;
4628
4629 return 0;
4630}
4631
4632static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4633{
4634 unsigned int i;
4635 void *sg_chain_buffer;
4636 size_t sg_chain_buffer_length;
4637 dma_addr_t sg_chain_buffer_dma_handle;
4638 struct device *dev;
4639 struct pqi_io_request *io_request;
4640
6396bb22
KC		 4641 ctrl_info->io_request_pool =
4642 kcalloc(ctrl_info->max_io_slots,
4643 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
6c223761
KB		 4644
4645 if (!ctrl_info->io_request_pool) {
4646 dev_err(&ctrl_info->pci_dev->dev,
4647 "failed to allocate I/O request pool\n");
4648 goto error;
4649 }
4650
4651 dev = &ctrl_info->pci_dev->dev;
4652 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4653 io_request = ctrl_info->io_request_pool;
4654
4655 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4656 io_request->iu =
4657 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
4658
4659 if (!io_request->iu) {
4660 dev_err(&ctrl_info->pci_dev->dev,
4661 "failed to allocate IU buffers\n");
4662 goto error;
4663 }
4664
4665 sg_chain_buffer = dma_alloc_coherent(dev,
4666 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4667 GFP_KERNEL);
4668
4669 if (!sg_chain_buffer) {
4670 dev_err(&ctrl_info->pci_dev->dev,
4671 "failed to allocate PQI scatter-gather chain buffers\n");
4672 goto error;
4673 }
4674
4675 io_request->index = i;
4676 io_request->sg_chain_buffer = sg_chain_buffer;
4677 io_request->sg_chain_buffer_dma_handle =
4678 sg_chain_buffer_dma_handle;
4679 io_request++;
4680 }
4681
4682 return 0;
4683
4684error:
4685 pqi_free_all_io_requests(ctrl_info);
4686
4687 return -ENOMEM;
4688}
4689
4690/*
4691 * Calculate required resources that are sized based on max. outstanding
4692 * requests and max. transfer size.
4693 */
4694
4695static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4696{
4697 u32 max_transfer_size;
4698 u32 max_sg_entries;
4699
4700 ctrl_info->scsi_ml_can_queue =
4701 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4702 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4703
4704 ctrl_info->error_buffer_length =
4705 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4706
d727a776
KB		 4707 if (reset_devices)
4708 max_transfer_size = min(ctrl_info->max_transfer_size,
4709 PQI_MAX_TRANSFER_SIZE_KDUMP);
4710 else
4711 max_transfer_size = min(ctrl_info->max_transfer_size,
4712 PQI_MAX_TRANSFER_SIZE);
6c223761
KB		 4713
4714 max_sg_entries = max_transfer_size / PAGE_SIZE;
4715
4716 /* +1 to cover when the buffer is not page-aligned. */
4717 max_sg_entries++;
4718
4719 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4720
4721 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4722
4723 ctrl_info->sg_chain_buffer_length =
e1d213bd
KB		 4724 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4725 PQI_EXTRA_SGL_MEMORY;
6c223761
KB		 4726 ctrl_info->sg_tablesize = max_sg_entries;
4727 ctrl_info->max_sectors = max_transfer_size / 512;
4728}
4729
4730static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4731{
6c223761
KB		 4732 int num_queue_groups;
4733 u16 num_elements_per_iq;
4734 u16 num_elements_per_oq;
4735
d727a776
KB		 4736 if (reset_devices) {
4737 num_queue_groups = 1;
4738 } else {
4739 int num_cpus;
4740 int max_queue_groups;
4741
4742 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4743 ctrl_info->max_outbound_queues - 1);
4744 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
6c223761 4745
d727a776
KB		 4746 num_cpus = num_online_cpus();
4747 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4748 num_queue_groups = min(num_queue_groups, max_queue_groups);
4749 }
6c223761
KB		 4750
4751 ctrl_info->num_queue_groups = num_queue_groups;
061ef06a 4752 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
6c223761 4753
77668f41
KB		 4754 /*
4755 * Make sure that the max. inbound IU length is an even multiple
4756 * of our inbound element length.
4757 */
4758 ctrl_info->max_inbound_iu_length =
4759 (ctrl_info->max_inbound_iu_length_per_firmware /
4760 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4761 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
6c223761
KB		 4762
4763 num_elements_per_iq =
4764 (ctrl_info->max_inbound_iu_length /
4765 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4766
4767 /* Add one because one element in each queue is unusable. */
4768 num_elements_per_iq++;
4769
4770 num_elements_per_iq = min(num_elements_per_iq,
4771 ctrl_info->max_elements_per_iq);
4772
4773 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4774 num_elements_per_oq = min(num_elements_per_oq,
4775 ctrl_info->max_elements_per_oq);
4776
4777 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4778 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4779
4780 ctrl_info->max_sg_per_iu =
4781 ((ctrl_info->max_inbound_iu_length -
4782 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4783 sizeof(struct pqi_sg_descriptor)) +
4784 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
4785}
4786
4787static inline void pqi_set_sg_descriptor(
4788 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg)
4789{
4790 u64 address = (u64)sg_dma_address(sg);
4791 unsigned int length = sg_dma_len(sg);
4792
4793 put_unaligned_le64(address, &sg_descriptor->address);
4794 put_unaligned_le32(length, &sg_descriptor->length);
4795 put_unaligned_le32(0, &sg_descriptor->flags);
4796}
4797
4798static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
4799 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
4800 struct pqi_io_request *io_request)
4801{
4802 int i;
4803 u16 iu_length;
4804 int sg_count;
4805 bool chained;
4806 unsigned int num_sg_in_iu;
4807 unsigned int max_sg_per_iu;
4808 struct scatterlist *sg;
4809 struct pqi_sg_descriptor *sg_descriptor;
4810
4811 sg_count = scsi_dma_map(scmd);
4812 if (sg_count < 0)
4813 return sg_count;
4814
4815 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
4816 PQI_REQUEST_HEADER_LENGTH;
4817
4818 if (sg_count == 0)
4819 goto out;
4820
4821 sg = scsi_sglist(scmd);
4822 sg_descriptor = request->sg_descriptors;
4823 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4824 chained = false;
4825 num_sg_in_iu = 0;
4826 i = 0;
4827
4828 while (1) {
4829 pqi_set_sg_descriptor(sg_descriptor, sg);
4830 if (!chained)
4831 num_sg_in_iu++;
4832 i++;
4833 if (i == sg_count)
4834 break;
4835 sg_descriptor++;
4836 if (i == max_sg_per_iu) {
4837 put_unaligned_le64(
4838 (u64)io_request->sg_chain_buffer_dma_handle,
4839 &sg_descriptor->address);
4840 put_unaligned_le32((sg_count - num_sg_in_iu)
4841 * sizeof(*sg_descriptor),
4842 &sg_descriptor->length);
4843 put_unaligned_le32(CISS_SG_CHAIN,
4844 &sg_descriptor->flags);
4845 chained = true;
4846 num_sg_in_iu++;
4847 sg_descriptor = io_request->sg_chain_buffer;
4848 }
4849 sg = sg_next(sg);
4850 }
4851
4852 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4853 request->partial = chained;
4854 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4855
4856out:
4857 put_unaligned_le16(iu_length, &request->header.iu_length);
4858
4859 return 0;
4860}
4861
4862static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
4863 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
4864 struct pqi_io_request *io_request)
4865{
4866 int i;
4867 u16 iu_length;
4868 int sg_count;
a60eec02
KB		 4869 bool chained;
4870 unsigned int num_sg_in_iu;
4871 unsigned int max_sg_per_iu;
6c223761
KB		 4872 struct scatterlist *sg;
4873 struct pqi_sg_descriptor *sg_descriptor;
4874
4875 sg_count = scsi_dma_map(scmd);
4876 if (sg_count < 0)
4877 return sg_count;
a60eec02
KB		 4878
4879 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
4880 PQI_REQUEST_HEADER_LENGTH;
4881 num_sg_in_iu = 0;
4882
6c223761
KB		 4883 if (sg_count == 0)
4884 goto out;
4885
a60eec02
KB		 4886 sg = scsi_sglist(scmd);
4887 sg_descriptor = request->sg_descriptors;
4888 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4889 chained = false;
4890 i = 0;
4891
4892 while (1) {
4893 pqi_set_sg_descriptor(sg_descriptor, sg);
4894 if (!chained)
4895 num_sg_in_iu++;
4896 i++;
4897 if (i == sg_count)
4898 break;
4899 sg_descriptor++;
4900 if (i == max_sg_per_iu) {
4901 put_unaligned_le64(
4902 (u64)io_request->sg_chain_buffer_dma_handle,
4903 &sg_descriptor->address);
4904 put_unaligned_le32((sg_count - num_sg_in_iu)
4905 * sizeof(*sg_descriptor),
4906 &sg_descriptor->length);
4907 put_unaligned_le32(CISS_SG_CHAIN,
4908 &sg_descriptor->flags);
4909 chained = true;
4910 num_sg_in_iu++;
4911 sg_descriptor = io_request->sg_chain_buffer;
6c223761 4912 }
a60eec02 4913 sg = sg_next(sg);
6c223761
KB		 4914 }
4915
a60eec02
KB		 4916 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4917 request->partial = chained;
6c223761 4918 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
a60eec02
KB		 4919
4920out:
6c223761
KB		 4921 put_unaligned_le16(iu_length, &request->header.iu_length);
4922 request->num_sg_descriptors = num_sg_in_iu;
4923
4924 return 0;
4925}
4926
4927static void pqi_raid_io_complete(struct pqi_io_request *io_request,
4928 void *context)
4929{
4930 struct scsi_cmnd *scmd;
4931
4932 scmd = io_request->scmd;
4933 pqi_free_io_request(io_request);
4934 scsi_dma_unmap(scmd);
4935 pqi_scsi_done(scmd);
4936}
4937
376fb880
KB		 4938static int pqi_raid_submit_scsi_cmd_with_io_request(
4939 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
6c223761
KB		 4940 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4941 struct pqi_queue_group *queue_group)
4942{
4943 int rc;
4944 size_t cdb_length;
6c223761
KB		 4945 struct pqi_raid_path_request *request;
4946
6c223761
KB		 4947 io_request->io_complete_callback = pqi_raid_io_complete;
4948 io_request->scmd = scmd;
4949
6c223761
KB		 4950 request = io_request->iu;
4951 memset(request, 0,
4952 offsetof(struct pqi_raid_path_request, sg_descriptors));
4953
4954 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
4955 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4956 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4957 put_unaligned_le16(io_request->index, &request->request_id);
4958 request->error_index = request->request_id;
4959 memcpy(request->lun_number, device->scsi3addr,
4960 sizeof(request->lun_number));
4961
4962 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
4963 memcpy(request->cdb, scmd->cmnd, cdb_length);
4964
4965 switch (cdb_length) {
4966 case 6:
4967 case 10:
4968 case 12:
4969 case 16:
4970 /* No bytes in the Additional CDB bytes field */
4971 request->additional_cdb_bytes_usage =
4972 SOP_ADDITIONAL_CDB_BYTES_0;
4973 break;
4974 case 20:
4975 /* 4 bytes in the Additional cdb field */
4976 request->additional_cdb_bytes_usage =
4977 SOP_ADDITIONAL_CDB_BYTES_4;
4978 break;
4979 case 24:
4980 /* 8 bytes in the Additional cdb field */
4981 request->additional_cdb_bytes_usage =
4982 SOP_ADDITIONAL_CDB_BYTES_8;
4983 break;
4984 case 28:
4985 /* 12 bytes in the Additional cdb field */
4986 request->additional_cdb_bytes_usage =
4987 SOP_ADDITIONAL_CDB_BYTES_12;
4988 break;
4989 case 32:
4990 default:
4991 /* 16 bytes in the Additional cdb field */
4992 request->additional_cdb_bytes_usage =
4993 SOP_ADDITIONAL_CDB_BYTES_16;
4994 break;
4995 }
4996
4997 switch (scmd->sc_data_direction) {
4998 case DMA_TO_DEVICE:
4999 request->data_direction = SOP_READ_FLAG;
5000 break;
5001 case DMA_FROM_DEVICE:
5002 request->data_direction = SOP_WRITE_FLAG;
5003 break;
5004 case DMA_NONE:
5005 request->data_direction = SOP_NO_DIRECTION_FLAG;
5006 break;
5007 case DMA_BIDIRECTIONAL:
5008 request->data_direction = SOP_BIDIRECTIONAL;
5009 break;
5010 default:
5011 dev_err(&ctrl_info->pci_dev->dev,
5012 "unknown data direction: %d\n",
5013 scmd->sc_data_direction);
6c223761
KB		 5014 break;
5015 }
5016
5017 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
5018 if (rc) {
5019 pqi_free_io_request(io_request);
5020 return SCSI_MLQUEUE_HOST_BUSY;
5021 }
5022
5023 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
5024
5025 return 0;
5026}
5027
376fb880
KB		 5028static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5029 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5030 struct pqi_queue_group *queue_group)
5031{
5032 struct pqi_io_request *io_request;
5033
5034 io_request = pqi_alloc_io_request(ctrl_info);
5035
5036 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5037 device, scmd, queue_group);
5038}
5039
5040static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
5041{
5042 if (!pqi_ctrl_blocked(ctrl_info))
5043 schedule_work(&ctrl_info->raid_bypass_retry_work);
5044}
5045
5046static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
5047{
5048 struct scsi_cmnd *scmd;
03b288cf 5049 struct pqi_scsi_dev *device;
376fb880
KB		 5050 struct pqi_ctrl_info *ctrl_info;
5051
5052 if (!io_request->raid_bypass)
5053 return false;
5054
5055 scmd = io_request->scmd;
5056 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
5057 return false;
5058 if (host_byte(scmd->result) == DID_NO_CONNECT)
5059 return false;
5060
03b288cf
KB		 5061 device = scmd->device->hostdata;
5062 if (pqi_device_offline(device))
5063 return false;
5064
376fb880
KB		 5065 ctrl_info = shost_to_hba(scmd->device->host);
5066 if (pqi_ctrl_offline(ctrl_info))
5067 return false;
5068
5069 return true;
5070}
5071
5072static inline void pqi_add_to_raid_bypass_retry_list(
5073 struct pqi_ctrl_info *ctrl_info,
5074 struct pqi_io_request *io_request, bool at_head)
5075{
5076 unsigned long flags;
5077
5078 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5079 if (at_head)
5080 list_add(&io_request->request_list_entry,
5081 &ctrl_info->raid_bypass_retry_list);
5082 else
5083 list_add_tail(&io_request->request_list_entry,
5084 &ctrl_info->raid_bypass_retry_list);
5085 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5086}
5087
5088static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
5089 void *context)
5090{
5091 struct scsi_cmnd *scmd;
5092
5093 scmd = io_request->scmd;
5094 pqi_free_io_request(io_request);
5095 pqi_scsi_done(scmd);
5096}
5097
5098static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
5099{
5100 struct scsi_cmnd *scmd;
5101 struct pqi_ctrl_info *ctrl_info;
5102
5103 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
5104 scmd = io_request->scmd;
5105 scmd->result = 0;
5106 ctrl_info = shost_to_hba(scmd->device->host);
5107
5108 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
5109 pqi_schedule_bypass_retry(ctrl_info);
5110}
5111
5112static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
5113{
5114 struct scsi_cmnd *scmd;
5115 struct pqi_scsi_dev *device;
5116 struct pqi_ctrl_info *ctrl_info;
5117 struct pqi_queue_group *queue_group;
5118
5119 scmd = io_request->scmd;
5120 device = scmd->device->hostdata;
5121 if (pqi_device_in_reset(device)) {
5122 pqi_free_io_request(io_request);
5123 set_host_byte(scmd, DID_RESET);
5124 pqi_scsi_done(scmd);
5125 return 0;
5126 }
5127
5128 ctrl_info = shost_to_hba(scmd->device->host);
5129 queue_group = io_request->queue_group;
5130
5131 pqi_reinit_io_request(io_request);
5132
5133 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5134 device, scmd, queue_group);
5135}
5136
5137static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
5138 struct pqi_ctrl_info *ctrl_info)
5139{
5140 unsigned long flags;
5141 struct pqi_io_request *io_request;
5142
5143 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5144 io_request = list_first_entry_or_null(
5145 &ctrl_info->raid_bypass_retry_list,
5146 struct pqi_io_request, request_list_entry);
5147 if (io_request)
5148 list_del(&io_request->request_list_entry);
5149 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5150
5151 return io_request;
5152}
5153
5154static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
5155{
5156 int rc;
5157 struct pqi_io_request *io_request;
5158
5159 pqi_ctrl_busy(ctrl_info);
5160
5161 while (1) {
5162 if (pqi_ctrl_blocked(ctrl_info))
5163 break;
5164 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
5165 if (!io_request)
5166 break;
5167 rc = pqi_retry_raid_bypass(io_request);
5168 if (rc) {
5169 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
5170 true);
5171 pqi_schedule_bypass_retry(ctrl_info);
5172 break;
5173 }
5174 }
5175
5176 pqi_ctrl_unbusy(ctrl_info);
5177}
5178
5179static void pqi_raid_bypass_retry_worker(struct work_struct *work)
5180{
5181 struct pqi_ctrl_info *ctrl_info;
5182
5183 ctrl_info = container_of(work, struct pqi_ctrl_info,
5184 raid_bypass_retry_work);
5185 pqi_retry_raid_bypass_requests(ctrl_info);
5186}
5187
5f310425
KB		 5188static void pqi_clear_all_queued_raid_bypass_retries(
5189 struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 5190{
5191 unsigned long flags;
376fb880
KB		 5192
5193 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5f310425 5194 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
376fb880
KB		 5195 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5196}
5197
6c223761
KB		 5198static void pqi_aio_io_complete(struct pqi_io_request *io_request,
5199 void *context)
5200{
5201 struct scsi_cmnd *scmd;
5202
5203 scmd = io_request->scmd;
5204 scsi_dma_unmap(scmd);
5205 if (io_request->status == -EAGAIN)
5206 set_host_byte(scmd, DID_IMM_RETRY);
376fb880
KB		 5207 else if (pqi_raid_bypass_retry_needed(io_request)) {
5208 pqi_queue_raid_bypass_retry(io_request);
5209 return;
5210 }
6c223761
KB		 5211 pqi_free_io_request(io_request);
5212 pqi_scsi_done(scmd);
5213}
5214
5215static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5216 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5217 struct pqi_queue_group *queue_group)
5218{
5219 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
376fb880 5220 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
6c223761
KB		 5221}
5222
5223static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
5224 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
5225 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 5226 struct pqi_encryption_info *encryption_info, bool raid_bypass)
6c223761
KB		 5227{
5228 int rc;
5229 struct pqi_io_request *io_request;
5230 struct pqi_aio_path_request *request;
5231
5232 io_request = pqi_alloc_io_request(ctrl_info);
5233 io_request->io_complete_callback = pqi_aio_io_complete;
5234 io_request->scmd = scmd;
376fb880 5235 io_request->raid_bypass = raid_bypass;
6c223761
KB		 5236
5237 request = io_request->iu;
5238 memset(request, 0,
5239 offsetof(struct pqi_raid_path_request, sg_descriptors));
5240
5241 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
5242 put_unaligned_le32(aio_handle, &request->nexus_id);
5243 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
5244 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5245 put_unaligned_le16(io_request->index, &request->request_id);
5246 request->error_index = request->request_id;
5247 if (cdb_length > sizeof(request->cdb))
5248 cdb_length = sizeof(request->cdb);
5249 request->cdb_length = cdb_length;
5250 memcpy(request->cdb, cdb, cdb_length);
5251
5252 switch (scmd->sc_data_direction) {
5253 case DMA_TO_DEVICE:
5254 request->data_direction = SOP_READ_FLAG;
5255 break;
5256 case DMA_FROM_DEVICE:
5257 request->data_direction = SOP_WRITE_FLAG;
5258 break;
5259 case DMA_NONE:
5260 request->data_direction = SOP_NO_DIRECTION_FLAG;
5261 break;
5262 case DMA_BIDIRECTIONAL:
5263 request->data_direction = SOP_BIDIRECTIONAL;
5264 break;
5265 default:
5266 dev_err(&ctrl_info->pci_dev->dev,
5267 "unknown data direction: %d\n",
5268 scmd->sc_data_direction);
6c223761
KB		 5269 break;
5270 }
5271
5272 if (encryption_info) {
5273 request->encryption_enable = true;
5274 put_unaligned_le16(encryption_info->data_encryption_key_index,
5275 &request->data_encryption_key_index);
5276 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5277 &request->encrypt_tweak_lower);
5278 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5279 &request->encrypt_tweak_upper);
5280 }
5281
5282 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
5283 if (rc) {
5284 pqi_free_io_request(io_request);
5285 return SCSI_MLQUEUE_HOST_BUSY;
5286 }
5287
5288 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5289
5290 return 0;
5291}
5292
061ef06a
KB		 5293static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
5294 struct scsi_cmnd *scmd)
5295{
5296 u16 hw_queue;
5297
5298 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
5299 if (hw_queue > ctrl_info->max_hw_queue_index)
5300 hw_queue = 0;
5301
5302 return hw_queue;
5303}
5304
7561a7e4
KB		 5305/*
5306 * This function gets called just before we hand the completed SCSI request
5307 * back to the SML.
5308 */
5309
5310void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
5311{
5312 struct pqi_scsi_dev *device;
5313
1e46731e
MR		 5314 if (!scmd->device) {
5315 set_host_byte(scmd, DID_NO_CONNECT);
5316 return;
5317 }
5318
7561a7e4 5319 device = scmd->device->hostdata;
1e46731e
MR		 5320 if (!device) {
5321 set_host_byte(scmd, DID_NO_CONNECT);
5322 return;
5323 }
5324
7561a7e4
KB		 5325 atomic_dec(&device->scsi_cmds_outstanding);
5326}
5327
6c223761 5328static int pqi_scsi_queue_command(struct Scsi_Host *shost,
7d81d2b8 5329 struct scsi_cmnd *scmd)
6c223761
KB		 5330{
5331 int rc;
5332 struct pqi_ctrl_info *ctrl_info;
5333 struct pqi_scsi_dev *device;
061ef06a 5334 u16 hw_queue;
6c223761
KB		 5335 struct pqi_queue_group *queue_group;
5336 bool raid_bypassed;
5337
5338 device = scmd->device->hostdata;
6c223761
KB		 5339 ctrl_info = shost_to_hba(shost);
5340
1e46731e
MR		 5341 if (!device) {
5342 set_host_byte(scmd, DID_NO_CONNECT);
5343 pqi_scsi_done(scmd);
5344 return 0;
5345 }
5346
7561a7e4
KB		 5347 atomic_inc(&device->scsi_cmds_outstanding);
5348
1e46731e
MR		 5349 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(ctrl_info,
5350 device)) {
6c223761
KB		 5351 set_host_byte(scmd, DID_NO_CONNECT);
5352 pqi_scsi_done(scmd);
5353 return 0;
5354 }
5355
7561a7e4 5356 pqi_ctrl_busy(ctrl_info);
4fd22c13 5357 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) ||
0530736e 5358 pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) {
7561a7e4
KB		 5359 rc = SCSI_MLQUEUE_HOST_BUSY;
5360 goto out;
5361 }
5362
7d81d2b8
KB		 5363 /*
5364 * This is necessary because the SML doesn't zero out this field during
5365 * error recovery.
5366 */
5367 scmd->result = 0;
5368
061ef06a
KB		 5369 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
5370 queue_group = &ctrl_info->queue_groups[hw_queue];
6c223761
KB		 5371
5372 if (pqi_is_logical_device(device)) {
5373 raid_bypassed = false;
588a63fe 5374 if (device->raid_bypass_enabled &&
694c5d5b 5375 !blk_rq_is_passthrough(scmd->request)) {
6c223761
KB		 5376 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
5377 scmd, queue_group);
376fb880
KB		 5378 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
5379 raid_bypassed = true;
6c223761
KB		 5380 }
5381 if (!raid_bypassed)
5382 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5383 queue_group);
5384 } else {
5385 if (device->aio_enabled)
5386 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd,
5387 queue_group);
5388 else
5389 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5390 queue_group);
5391 }
5392
7561a7e4
KB		 5393out:
5394 pqi_ctrl_unbusy(ctrl_info);
5395 if (rc)
5396 atomic_dec(&device->scsi_cmds_outstanding);
5397
6c223761
KB		 5398 return rc;
5399}
5400
7561a7e4
KB		 5401static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
5402 struct pqi_queue_group *queue_group)
5403{
5404 unsigned int path;
5405 unsigned long flags;
5406 bool list_is_empty;
5407
5408 for (path = 0; path < 2; path++) {
5409 while (1) {
5410 spin_lock_irqsave(
5411 &queue_group->submit_lock[path], flags);
5412 list_is_empty =
5413 list_empty(&queue_group->request_list[path]);
5414 spin_unlock_irqrestore(
5415 &queue_group->submit_lock[path], flags);
5416 if (list_is_empty)
5417 break;
5418 pqi_check_ctrl_health(ctrl_info);
5419 if (pqi_ctrl_offline(ctrl_info))
5420 return -ENXIO;
5421 usleep_range(1000, 2000);
5422 }
5423 }
5424
5425 return 0;
5426}
5427
5428static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
5429{
5430 int rc;
5431 unsigned int i;
5432 unsigned int path;
5433 struct pqi_queue_group *queue_group;
5434 pqi_index_t iq_pi;
5435 pqi_index_t iq_ci;
5436
5437 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5438 queue_group = &ctrl_info->queue_groups[i];
5439
5440 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
5441 if (rc)
5442 return rc;
5443
5444 for (path = 0; path < 2; path++) {
5445 iq_pi = queue_group->iq_pi_copy[path];
5446
5447 while (1) {
dac12fbc 5448 iq_ci = readl(queue_group->iq_ci[path]);
7561a7e4
KB		 5449 if (iq_ci == iq_pi)
5450 break;
5451 pqi_check_ctrl_health(ctrl_info);
5452 if (pqi_ctrl_offline(ctrl_info))
5453 return -ENXIO;
5454 usleep_range(1000, 2000);
5455 }
5456 }
5457 }
5458
5459 return 0;
5460}
5461
5462static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5463 struct pqi_scsi_dev *device)
5464{
5465 unsigned int i;
5466 unsigned int path;
5467 struct pqi_queue_group *queue_group;
5468 unsigned long flags;
5469 struct pqi_io_request *io_request;
5470 struct pqi_io_request *next;
5471 struct scsi_cmnd *scmd;
5472 struct pqi_scsi_dev *scsi_device;
5473
5474 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5475 queue_group = &ctrl_info->queue_groups[i];
5476
5477 for (path = 0; path < 2; path++) {
5478 spin_lock_irqsave(
5479 &queue_group->submit_lock[path], flags);
5480
5481 list_for_each_entry_safe(io_request, next,
5482 &queue_group->request_list[path],
5483 request_list_entry) {
5484 scmd = io_request->scmd;
5485 if (!scmd)
5486 continue;
5487
5488 scsi_device = scmd->device->hostdata;
5489 if (scsi_device != device)
5490 continue;
5491
5492 list_del(&io_request->request_list_entry);
5493 set_host_byte(scmd, DID_RESET);
5494 pqi_scsi_done(scmd);
5495 }
5496
5497 spin_unlock_irqrestore(
5498 &queue_group->submit_lock[path], flags);
5499 }
5500 }
5501}
5502
4fd22c13
MR		 5503static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info)
5504{
5505 unsigned int i;
5506 unsigned int path;
5507 struct pqi_queue_group *queue_group;
5508 unsigned long flags;
5509 struct pqi_io_request *io_request;
5510 struct pqi_io_request *next;
5511 struct scsi_cmnd *scmd;
5512
5513 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5514 queue_group = &ctrl_info->queue_groups[i];
5515
5516 for (path = 0; path < 2; path++) {
5517 spin_lock_irqsave(&queue_group->submit_lock[path],
5518 flags);
5519
5520 list_for_each_entry_safe(io_request, next,
5521 &queue_group->request_list[path],
5522 request_list_entry) {
5523
5524 scmd = io_request->scmd;
5525 if (!scmd)
5526 continue;
5527
5528 list_del(&io_request->request_list_entry);
5529 set_host_byte(scmd, DID_RESET);
5530 pqi_scsi_done(scmd);
5531 }
5532
5533 spin_unlock_irqrestore(
5534 &queue_group->submit_lock[path], flags);
5535 }
5536 }
5537}
5538
061ef06a 5539static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
1e46731e 5540 struct pqi_scsi_dev *device, unsigned long timeout_secs)
061ef06a 5541{
1e46731e
MR		 5542 unsigned long timeout;
5543
4fd22c13 5544 timeout = (timeout_secs * PQI_HZ) + jiffies;
1e46731e 5545
061ef06a
KB		 5546 while (atomic_read(&device->scsi_cmds_outstanding)) {
5547 pqi_check_ctrl_health(ctrl_info);
5548 if (pqi_ctrl_offline(ctrl_info))
5549 return -ENXIO;
1e46731e
MR		 5550 if (timeout_secs != NO_TIMEOUT) {
5551 if (time_after(jiffies, timeout)) {
5552 dev_err(&ctrl_info->pci_dev->dev,
5553 "timed out waiting for pending IO\n");
5554 return -ETIMEDOUT;
5555 }
5556 }
061ef06a
KB		 5557 usleep_range(1000, 2000);
5558 }
5559
5560 return 0;
5561}
5562
4fd22c13
MR		 5563static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5564 unsigned long timeout_secs)
061ef06a
KB		 5565{
5566 bool io_pending;
5567 unsigned long flags;
4fd22c13 5568 unsigned long timeout;
061ef06a
KB		 5569 struct pqi_scsi_dev *device;
5570
4fd22c13 5571 timeout = (timeout_secs * PQI_HZ) + jiffies;
061ef06a
KB		 5572 while (1) {
5573 io_pending = false;
5574
5575 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5576 list_for_each_entry(device, &ctrl_info->scsi_device_list,
5577 scsi_device_list_entry) {
5578 if (atomic_read(&device->scsi_cmds_outstanding)) {
5579 io_pending = true;
5580 break;
5581 }
5582 }
5583 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5584 flags);
5585
5586 if (!io_pending)
5587 break;
5588
5589 pqi_check_ctrl_health(ctrl_info);
5590 if (pqi_ctrl_offline(ctrl_info))
5591 return -ENXIO;
5592
4fd22c13
MR		 5593 if (timeout_secs != NO_TIMEOUT) {
5594 if (time_after(jiffies, timeout)) {
5595 dev_err(&ctrl_info->pci_dev->dev,
5596 "timed out waiting for pending IO\n");
5597 return -ETIMEDOUT;
5598 }
5599 }
061ef06a
KB		 5600 usleep_range(1000, 2000);
5601 }
5602
5603 return 0;
5604}
5605
0530736e
KB		 5606static int pqi_ctrl_wait_for_pending_sync_cmds(struct pqi_ctrl_info *ctrl_info)
5607{
5608 while (atomic_read(&ctrl_info->sync_cmds_outstanding)) {
5609 pqi_check_ctrl_health(ctrl_info);
5610 if (pqi_ctrl_offline(ctrl_info))
5611 return -ENXIO;
5612 usleep_range(1000, 2000);
5613 }
5614
5615 return 0;
5616}
5617
14bb215d
KB		 5618static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
5619 void *context)
6c223761 5620{
14bb215d 5621 struct completion *waiting = context;
6c223761 5622
14bb215d
KB		 5623 complete(waiting);
5624}
6c223761 5625
bb9af08c 5626#define PQI_LUN_RESET_TIMEOUT_SECS 30
c2922f17 5627#define PQI_LUN_RESET_POLL_COMPLETION_SECS 10
14bb215d
KB		 5628
5629static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
5630 struct pqi_scsi_dev *device, struct completion *wait)
5631{
5632 int rc;
14bb215d
KB		 5633
5634 while (1) {
5635 if (wait_for_completion_io_timeout(wait,
c2922f17 5636 PQI_LUN_RESET_POLL_COMPLETION_SECS * PQI_HZ)) {
14bb215d
KB		 5637 rc = 0;
5638 break;
6c223761
KB		 5639 }
5640
14bb215d
KB		 5641 pqi_check_ctrl_health(ctrl_info);
5642 if (pqi_ctrl_offline(ctrl_info)) {
4e8415e3 5643 rc = -ENXIO;
14bb215d
KB		 5644 break;
5645 }
6c223761 5646 }
6c223761 5647
14bb215d 5648 return rc;
6c223761
KB		 5649}
5650
14bb215d 5651static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 5652 struct pqi_scsi_dev *device)
5653{
5654 int rc;
5655 struct pqi_io_request *io_request;
5656 DECLARE_COMPLETION_ONSTACK(wait);
5657 struct pqi_task_management_request *request;
5658
6c223761 5659 io_request = pqi_alloc_io_request(ctrl_info);
14bb215d 5660 io_request->io_complete_callback = pqi_lun_reset_complete;
6c223761
KB		 5661 io_request->context = &wait;
5662
5663 request = io_request->iu;
5664 memset(request, 0, sizeof(*request));
5665
5666 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
5667 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
5668 &request->header.iu_length);
5669 put_unaligned_le16(io_request->index, &request->request_id);
5670 memcpy(request->lun_number, device->scsi3addr,
5671 sizeof(request->lun_number));
5672 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
c2922f17
MB		 5673 if (ctrl_info->tmf_iu_timeout_supported)
5674 put_unaligned_le16(PQI_LUN_RESET_TIMEOUT_SECS,
5675 &request->timeout);
6c223761
KB		 5676
5677 pqi_start_io(ctrl_info,
5678 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
5679 io_request);
5680
14bb215d
KB		 5681 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
5682 if (rc == 0)
6c223761 5683 rc = io_request->status;
6c223761
KB		 5684
5685 pqi_free_io_request(io_request);
6c223761
KB		 5686
5687 return rc;
5688}
5689
429fab70
KB		 5690/* Performs a reset at the LUN level. */
5691
3406384b
MR		 5692#define PQI_LUN_RESET_RETRIES 3
5693#define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000
429fab70 5694#define PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS 120
6c223761 5695
4fd22c13 5696static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 5697 struct pqi_scsi_dev *device)
5698{
5699 int rc;
3406384b 5700 unsigned int retries;
4fd22c13 5701 unsigned long timeout_secs;
6c223761 5702
3406384b
MR		 5703 for (retries = 0;;) {
5704 rc = pqi_lun_reset(ctrl_info, device);
c2922f17 5705 if (rc == 0 || ++retries > PQI_LUN_RESET_RETRIES)
3406384b
MR		 5706 break;
5707 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
5708 }
429fab70
KB		 5709
5710 timeout_secs = rc ? PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS : NO_TIMEOUT;
4fd22c13
MR		 5711
5712 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs);
6c223761 5713
14bb215d 5714 return rc == 0 ? SUCCESS : FAILED;
6c223761
KB		 5715}
5716
4fd22c13
MR		 5717static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5718 struct pqi_scsi_dev *device)
5719{
5720 int rc;
5721
5722 mutex_lock(&ctrl_info->lun_reset_mutex);
5723
5724 pqi_ctrl_block_requests(ctrl_info);
5725 pqi_ctrl_wait_until_quiesced(ctrl_info);
5726 pqi_fail_io_queued_for_device(ctrl_info, device);
5727 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
5728 pqi_device_reset_start(device);
5729 pqi_ctrl_unblock_requests(ctrl_info);
5730
5731 if (rc)
5732 rc = FAILED;
5733 else
5734 rc = _pqi_device_reset(ctrl_info, device);
5735
5736 pqi_device_reset_done(device);
5737
5738 mutex_unlock(&ctrl_info->lun_reset_mutex);
429fab70 5739
4fd22c13
MR		 5740 return rc;
5741}
5742
6c223761
KB		 5743static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
5744{
5745 int rc;
7561a7e4 5746 struct Scsi_Host *shost;
6c223761
KB		 5747 struct pqi_ctrl_info *ctrl_info;
5748 struct pqi_scsi_dev *device;
5749
7561a7e4
KB		 5750 shost = scmd->device->host;
5751 ctrl_info = shost_to_hba(shost);
6c223761
KB		 5752 device = scmd->device->hostdata;
5753
5754 dev_err(&ctrl_info->pci_dev->dev,
5755 "resetting scsi %d:%d:%d:%d\n",
7561a7e4 5756 shost->host_no, device->bus, device->target, device->lun);
6c223761 5757
7561a7e4 5758 pqi_check_ctrl_health(ctrl_info);
0530736e
KB		 5759 if (pqi_ctrl_offline(ctrl_info) ||
5760 pqi_device_reset_blocked(ctrl_info)) {
7561a7e4
KB		 5761 rc = FAILED;
5762 goto out;
5763 }
6c223761 5764
4fd22c13 5765 pqi_wait_until_ofa_finished(ctrl_info);
7561a7e4 5766
0530736e 5767 atomic_inc(&ctrl_info->sync_cmds_outstanding);
4fd22c13 5768 rc = pqi_device_reset(ctrl_info, device);
0530736e 5769 atomic_dec(&ctrl_info->sync_cmds_outstanding);
429fab70 5770
7561a7e4 5771out:
6c223761
KB		 5772 dev_err(&ctrl_info->pci_dev->dev,
5773 "reset of scsi %d:%d:%d:%d: %s\n",
7561a7e4 5774 shost->host_no, device->bus, device->target, device->lun,
6c223761
KB		 5775 rc == SUCCESS ? "SUCCESS" : "FAILED");
5776
5777 return rc;
5778}
5779
5780static int pqi_slave_alloc(struct scsi_device *sdev)
5781{
5782 struct pqi_scsi_dev *device;
5783 unsigned long flags;
5784 struct pqi_ctrl_info *ctrl_info;
5785 struct scsi_target *starget;
5786 struct sas_rphy *rphy;
5787
5788 ctrl_info = shost_to_hba(sdev->host);
5789
5790 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5791
5792 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
5793 starget = scsi_target(sdev);
5794 rphy = target_to_rphy(starget);
5795 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
5796 if (device) {
5797 device->target = sdev_id(sdev);
5798 device->lun = sdev->lun;
5799 device->target_lun_valid = true;
5800 }
5801 } else {
5802 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
5803 sdev_id(sdev), sdev->lun);
5804 }
5805
94086f5b 5806 if (device) {
6c223761
KB		 5807 sdev->hostdata = device;
5808 device->sdev = sdev;
5809 if (device->queue_depth) {
5810 device->advertised_queue_depth = device->queue_depth;
5811 scsi_change_queue_depth(sdev,
5812 device->advertised_queue_depth);
5813 }
b6e2ef67
DC		 5814 if (pqi_is_logical_device(device))
5815 pqi_disable_write_same(sdev);
2b447f81
DC		 5816 else
5817 sdev->allow_restart = 1;
6c223761
KB		 5818 }
5819
5820 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5821
5822 return 0;
5823}
5824
52198226
CH		 5825static int pqi_map_queues(struct Scsi_Host *shost)
5826{
5827 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
5828
79d3fa9e 5829 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
ed76e329 5830 ctrl_info->pci_dev, 0);
52198226
CH		 5831}
5832
ce143793
KB		 5833static int pqi_slave_configure(struct scsi_device *sdev)
5834{
5835 struct pqi_scsi_dev *device;
5836
5837 device = sdev->hostdata;
5838 device->devtype = sdev->type;
5839
5840 return 0;
5841}
5842
6c223761
KB		 5843static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
5844 void __user *arg)
5845{
5846 struct pci_dev *pci_dev;
5847 u32 subsystem_vendor;
5848 u32 subsystem_device;
5849 cciss_pci_info_struct pciinfo;
5850
5851 if (!arg)
5852 return -EINVAL;
5853
5854 pci_dev = ctrl_info->pci_dev;
5855
5856 pciinfo.domain = pci_domain_nr(pci_dev->bus);
5857 pciinfo.bus = pci_dev->bus->number;
5858 pciinfo.dev_fn = pci_dev->devfn;
5859 subsystem_vendor = pci_dev->subsystem_vendor;
5860 subsystem_device = pci_dev->subsystem_device;
5861 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) |
5862 subsystem_vendor;
5863
5864 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
5865 return -EFAULT;
5866
5867 return 0;
5868}
5869
5870static int pqi_getdrivver_ioctl(void __user *arg)
5871{
5872 u32 version;
5873
5874 if (!arg)
5875 return -EINVAL;
5876
5877 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
5878 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
5879
5880 if (copy_to_user(arg, &version, sizeof(version)))
5881 return -EFAULT;
5882
5883 return 0;
5884}
5885
5886struct ciss_error_info {
5887 u8 scsi_status;
5888 int command_status;
5889 size_t sense_data_length;
5890};
5891
5892static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
5893 struct ciss_error_info *ciss_error_info)
5894{
5895 int ciss_cmd_status;
5896 size_t sense_data_length;
5897
5898 switch (pqi_error_info->data_out_result) {
5899 case PQI_DATA_IN_OUT_GOOD:
5900 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
5901 break;
5902 case PQI_DATA_IN_OUT_UNDERFLOW:
5903 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
5904 break;
5905 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
5906 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
5907 break;
5908 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
5909 case PQI_DATA_IN_OUT_BUFFER_ERROR:
5910 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
5911 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
5912 case PQI_DATA_IN_OUT_ERROR:
5913 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
5914 break;
5915 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
5916 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
5917 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
5918 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
5919 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
5920 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
5921 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
5922 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
5923 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
5924 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
5925 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
5926 break;
5927 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
5928 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
5929 break;
5930 case PQI_DATA_IN_OUT_ABORTED:
5931 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
5932 break;
5933 case PQI_DATA_IN_OUT_TIMEOUT:
5934 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
5935 break;
5936 default:
5937 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
5938 break;
5939 }
5940
5941 sense_data_length =
5942 get_unaligned_le16(&pqi_error_info->sense_data_length);
5943 if (sense_data_length == 0)
5944 sense_data_length =
5945 get_unaligned_le16(&pqi_error_info->response_data_length);
5946 if (sense_data_length)
5947 if (sense_data_length > sizeof(pqi_error_info->data))
5948 sense_data_length = sizeof(pqi_error_info->data);
5949
5950 ciss_error_info->scsi_status = pqi_error_info->status;
5951 ciss_error_info->command_status = ciss_cmd_status;
5952 ciss_error_info->sense_data_length = sense_data_length;
5953}
5954
5955static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
5956{
5957 int rc;
5958 char *kernel_buffer = NULL;
5959 u16 iu_length;
5960 size_t sense_data_length;
5961 IOCTL_Command_struct iocommand;
5962 struct pqi_raid_path_request request;
5963 struct pqi_raid_error_info pqi_error_info;
5964 struct ciss_error_info ciss_error_info;
5965
5966 if (pqi_ctrl_offline(ctrl_info))
5967 return -ENXIO;
5968 if (!arg)
5969 return -EINVAL;
5970 if (!capable(CAP_SYS_RAWIO))
5971 return -EPERM;
5972 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
5973 return -EFAULT;
5974 if (iocommand.buf_size < 1 &&
5975 iocommand.Request.Type.Direction != XFER_NONE)
5976 return -EINVAL;
5977 if (iocommand.Request.CDBLen > sizeof(request.cdb))
5978 return -EINVAL;
5979 if (iocommand.Request.Type.Type != TYPE_CMD)
5980 return -EINVAL;
5981
5982 switch (iocommand.Request.Type.Direction) {
5983 case XFER_NONE:
5984 case XFER_WRITE:
5985 case XFER_READ:
41555d54 5986 case XFER_READ | XFER_WRITE:
6c223761
KB		 5987 break;
5988 default:
5989 return -EINVAL;
5990 }
5991
5992 if (iocommand.buf_size > 0) {
5993 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
5994 if (!kernel_buffer)
5995 return -ENOMEM;
5996 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5997 if (copy_from_user(kernel_buffer, iocommand.buf,
5998 iocommand.buf_size)) {
5999 rc = -EFAULT;
6000 goto out;
6001 }
6002 } else {
6003 memset(kernel_buffer, 0, iocommand.buf_size);
6004 }
6005 }
6006
6007 memset(&request, 0, sizeof(request));
6008
6009 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
6010 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
6011 PQI_REQUEST_HEADER_LENGTH;
6012 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
6013 sizeof(request.lun_number));
6014 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
6015 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
6016
6017 switch (iocommand.Request.Type.Direction) {
6018 case XFER_NONE:
6019 request.data_direction = SOP_NO_DIRECTION_FLAG;
6020 break;
6021 case XFER_WRITE:
6022 request.data_direction = SOP_WRITE_FLAG;
6023 break;
6024 case XFER_READ:
6025 request.data_direction = SOP_READ_FLAG;
6026 break;
41555d54
KB		 6027 case XFER_READ | XFER_WRITE:
6028 request.data_direction = SOP_BIDIRECTIONAL;
6029 break;
6c223761
KB		 6030 }
6031
6032 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
6033
6034 if (iocommand.buf_size > 0) {
6035 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
6036
6037 rc = pqi_map_single(ctrl_info->pci_dev,
6038 &request.sg_descriptors[0], kernel_buffer,
6917a9cc 6039 iocommand.buf_size, DMA_BIDIRECTIONAL);
6c223761
KB		 6040 if (rc)
6041 goto out;
6042
6043 iu_length += sizeof(request.sg_descriptors[0]);
6044 }
6045
6046 put_unaligned_le16(iu_length, &request.header.iu_length);
6047
21432010 6048 if (ctrl_info->raid_iu_timeout_supported)
6049 put_unaligned_le32(iocommand.Request.Timeout, &request.timeout);
6050
6c223761
KB		 6051 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6052 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
6053
6054 if (iocommand.buf_size > 0)
6055 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
6917a9cc 6056 DMA_BIDIRECTIONAL);
6c223761
KB		 6057
6058 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
6059
6060 if (rc == 0) {
6061 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
6062 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
6063 iocommand.error_info.CommandStatus =
6064 ciss_error_info.command_status;
6065 sense_data_length = ciss_error_info.sense_data_length;
6066 if (sense_data_length) {
6067 if (sense_data_length >
6068 sizeof(iocommand.error_info.SenseInfo))
6069 sense_data_length =
6070 sizeof(iocommand.error_info.SenseInfo);
6071 memcpy(iocommand.error_info.SenseInfo,
6072 pqi_error_info.data, sense_data_length);
6073 iocommand.error_info.SenseLen = sense_data_length;
6074 }
6075 }
6076
6077 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
6078 rc = -EFAULT;
6079 goto out;
6080 }
6081
6082 if (rc == 0 && iocommand.buf_size > 0 &&
6083 (iocommand.Request.Type.Direction & XFER_READ)) {
6084 if (copy_to_user(iocommand.buf, kernel_buffer,
6085 iocommand.buf_size)) {
6086 rc = -EFAULT;
6087 }
6088 }
6089
6090out:
6091 kfree(kernel_buffer);
6092
6093 return rc;
6094}
6095
6f4e626f
NC		 6096static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd,
6097 void __user *arg)
6c223761
KB		 6098{
6099 int rc;
6100 struct pqi_ctrl_info *ctrl_info;
6101
6102 ctrl_info = shost_to_hba(sdev->host);
6103
694c5d5b 6104 if (pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info))
4fd22c13
MR		 6105 return -EBUSY;
6106
6c223761
KB		 6107 switch (cmd) {
6108 case CCISS_DEREGDISK:
6109 case CCISS_REGNEWDISK:
6110 case CCISS_REGNEWD:
6111 rc = pqi_scan_scsi_devices(ctrl_info);
6112 break;
6113 case CCISS_GETPCIINFO:
6114 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
6115 break;
6116 case CCISS_GETDRIVVER:
6117 rc = pqi_getdrivver_ioctl(arg);
6118 break;
6119 case CCISS_PASSTHRU:
6120 rc = pqi_passthru_ioctl(ctrl_info, arg);
6121 break;
6122 default:
6123 rc = -EINVAL;
6124 break;
6125 }
6126
6127 return rc;
6128}
6129
6d90615f 6130static ssize_t pqi_firmware_version_show(struct device *dev,
6c223761
KB		 6131 struct device_attribute *attr, char *buffer)
6132{
6c223761
KB		 6133 struct Scsi_Host *shost;
6134 struct pqi_ctrl_info *ctrl_info;
6135
6136 shost = class_to_shost(dev);
6137 ctrl_info = shost_to_hba(shost);
6138
6d90615f
MB		 6139 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version);
6140}
6141
6142static ssize_t pqi_driver_version_show(struct device *dev,
6143 struct device_attribute *attr, char *buffer)
6144{
694c5d5b
KB		 6145 return snprintf(buffer, PAGE_SIZE, "%s\n",
6146 DRIVER_VERSION BUILD_TIMESTAMP);
6d90615f 6147}
6c223761 6148
6d90615f
MB		 6149static ssize_t pqi_serial_number_show(struct device *dev,
6150 struct device_attribute *attr, char *buffer)
6151{
6152 struct Scsi_Host *shost;
6153 struct pqi_ctrl_info *ctrl_info;
6154
6155 shost = class_to_shost(dev);
6156 ctrl_info = shost_to_hba(shost);
6157
6158 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number);
6159}
6160
6161static ssize_t pqi_model_show(struct device *dev,
6162 struct device_attribute *attr, char *buffer)
6163{
6164 struct Scsi_Host *shost;
6165 struct pqi_ctrl_info *ctrl_info;
6166
6167 shost = class_to_shost(dev);
6168 ctrl_info = shost_to_hba(shost);
6169
6170 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model);
6171}
6172
6173static ssize_t pqi_vendor_show(struct device *dev,
6174 struct device_attribute *attr, char *buffer)
6175{
6176 struct Scsi_Host *shost;
6177 struct pqi_ctrl_info *ctrl_info;
6178
6179 shost = class_to_shost(dev);
6180 ctrl_info = shost_to_hba(shost);
6181
6182 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor);
6c223761
KB		 6183}
6184
6185static ssize_t pqi_host_rescan_store(struct device *dev,
6186 struct device_attribute *attr, const char *buffer, size_t count)
6187{
6188 struct Scsi_Host *shost = class_to_shost(dev);
6189
6190 pqi_scan_start(shost);
6191
6192 return count;
6193}
6194
3c50976f
KB		 6195static ssize_t pqi_lockup_action_show(struct device *dev,
6196 struct device_attribute *attr, char *buffer)
6197{
6198 int count = 0;
6199 unsigned int i;
6200
6201 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6202 if (pqi_lockup_actions[i].action == pqi_lockup_action)
181aea89 6203 count += scnprintf(buffer + count, PAGE_SIZE - count,
3c50976f
KB		 6204 "[%s] ", pqi_lockup_actions[i].name);
6205 else
181aea89 6206 count += scnprintf(buffer + count, PAGE_SIZE - count,
3c50976f
KB		 6207 "%s ", pqi_lockup_actions[i].name);
6208 }
6209
181aea89 6210 count += scnprintf(buffer + count, PAGE_SIZE - count, "\n");
3c50976f
KB		 6211
6212 return count;
6213}
6214
6215static ssize_t pqi_lockup_action_store(struct device *dev,
6216 struct device_attribute *attr, const char *buffer, size_t count)
6217{
6218 unsigned int i;
6219 char *action_name;
6220 char action_name_buffer[32];
6221
6222 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
6223 action_name = strstrip(action_name_buffer);
6224
6225 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6226 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
6227 pqi_lockup_action = pqi_lockup_actions[i].action;
6228 return count;
6229 }
6230 }
6231
6232 return -EINVAL;
6233}
6234
6d90615f
MB		 6235static DEVICE_ATTR(driver_version, 0444, pqi_driver_version_show, NULL);
6236static DEVICE_ATTR(firmware_version, 0444, pqi_firmware_version_show, NULL);
6237static DEVICE_ATTR(model, 0444, pqi_model_show, NULL);
6238static DEVICE_ATTR(serial_number, 0444, pqi_serial_number_show, NULL);
6239static DEVICE_ATTR(vendor, 0444, pqi_vendor_show, NULL);
cbe0c7b1 6240static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
3c50976f
KB		 6241static DEVICE_ATTR(lockup_action, 0644,
6242 pqi_lockup_action_show, pqi_lockup_action_store);
6c223761
KB		 6243
6244static struct device_attribute *pqi_shost_attrs[] = {
6d90615f
MB		 6245 &dev_attr_driver_version,
6246 &dev_attr_firmware_version,
6247 &dev_attr_model,
6248 &dev_attr_serial_number,
6249 &dev_attr_vendor,
6c223761 6250 &dev_attr_rescan,
3c50976f 6251 &dev_attr_lockup_action,
6c223761
KB		 6252 NULL
6253};
6254
cd128244
DC		 6255static ssize_t pqi_unique_id_show(struct device *dev,
6256 struct device_attribute *attr, char *buffer)
6257{
6258 struct pqi_ctrl_info *ctrl_info;
6259 struct scsi_device *sdev;
6260 struct pqi_scsi_dev *device;
6261 unsigned long flags;
5b083b30 6262 u8 unique_id[16];
cd128244
DC		 6263
6264 sdev = to_scsi_device(dev);
6265 ctrl_info = shost_to_hba(sdev->host);
6266
6267 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6268
6269 device = sdev->hostdata;
6270 if (!device) {
6271 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6272 flags);
6273 return -ENODEV;
6274 }
5b083b30
KB		 6275
6276 if (device->is_physical_device) {
6277 memset(unique_id, 0, 8);
6278 memcpy(unique_id + 8, &device->wwid, sizeof(device->wwid));
6279 } else {
6280 memcpy(unique_id, device->volume_id, sizeof(device->volume_id));
6281 }
cd128244
DC		 6282
6283 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6284
5995b236
MB		 6285 return snprintf(buffer, PAGE_SIZE,
6286 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n",
5b083b30
KB		 6287 unique_id[0], unique_id[1], unique_id[2], unique_id[3],
6288 unique_id[4], unique_id[5], unique_id[6], unique_id[7],
6289 unique_id[8], unique_id[9], unique_id[10], unique_id[11],
6290 unique_id[12], unique_id[13], unique_id[14], unique_id[15]);
cd128244
DC		 6291}
6292
6293static ssize_t pqi_lunid_show(struct device *dev,
6294 struct device_attribute *attr, char *buffer)
6295{
6296 struct pqi_ctrl_info *ctrl_info;
6297 struct scsi_device *sdev;
6298 struct pqi_scsi_dev *device;
6299 unsigned long flags;
6300 u8 lunid[8];
6301
6302 sdev = to_scsi_device(dev);
6303 ctrl_info = shost_to_hba(sdev->host);
6304
6305 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6306
6307 device = sdev->hostdata;
6308 if (!device) {
6309 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6310 flags);
6311 return -ENODEV;
6312 }
694c5d5b 6313
cd128244
DC		 6314 memcpy(lunid, device->scsi3addr, sizeof(lunid));
6315
6316 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6317
6318 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
6319}
6320
694c5d5b
KB		 6321#define MAX_PATHS 8
6322
cd128244
DC		 6323static ssize_t pqi_path_info_show(struct device *dev,
6324 struct device_attribute *attr, char *buf)
6325{
6326 struct pqi_ctrl_info *ctrl_info;
6327 struct scsi_device *sdev;
6328 struct pqi_scsi_dev *device;
6329 unsigned long flags;
6330 int i;
6331 int output_len = 0;
6332 u8 box;
6333 u8 bay;
694c5d5b 6334 u8 path_map_index;
cd128244 6335 char *active;
694c5d5b 6336 u8 phys_connector[2];
cd128244
DC		 6337
6338 sdev = to_scsi_device(dev);
6339 ctrl_info = shost_to_hba(sdev->host);
6340
6341 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6342
6343 device = sdev->hostdata;
6344 if (!device) {
6345 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6346 flags);
6347 return -ENODEV;
6348 }
6349
6350 bay = device->bay;
6351 for (i = 0; i < MAX_PATHS; i++) {
694c5d5b 6352 path_map_index = 1 << i;
cd128244
DC		 6353 if (i == device->active_path_index)
6354 active = "Active";
6355 else if (device->path_map & path_map_index)
6356 active = "Inactive";
6357 else
6358 continue;
6359
6360 output_len += scnprintf(buf + output_len,
6361 PAGE_SIZE - output_len,
6362 "[%d:%d:%d:%d] %20.20s ",
6363 ctrl_info->scsi_host->host_no,
6364 device->bus, device->target,
6365 device->lun,
6366 scsi_device_type(device->devtype));
6367
6368 if (device->devtype == TYPE_RAID ||
6369 pqi_is_logical_device(device))
6370 goto end_buffer;
6371
6372 memcpy(&phys_connector, &device->phys_connector[i],
6373 sizeof(phys_connector));
6374 if (phys_connector[0] < '0')
6375 phys_connector[0] = '0';
6376 if (phys_connector[1] < '0')
6377 phys_connector[1] = '0';
6378
6379 output_len += scnprintf(buf + output_len,
6380 PAGE_SIZE - output_len,
6381 "PORT: %.2s ", phys_connector);
6382
6383 box = device->box[i];
6384 if (box != 0 && box != 0xFF)
6385 output_len += scnprintf(buf + output_len,
6386 PAGE_SIZE - output_len,
6387 "BOX: %hhu ", box);
6388
6389 if ((device->devtype == TYPE_DISK ||
6390 device->devtype == TYPE_ZBC) &&
6391 pqi_expose_device(device))
6392 output_len += scnprintf(buf + output_len,
6393 PAGE_SIZE - output_len,
6394 "BAY: %hhu ", bay);
6395
6396end_buffer:
6397 output_len += scnprintf(buf + output_len,
6398 PAGE_SIZE - output_len,
6399 "%s\n", active);
6400 }
6401
6402 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
694c5d5b 6403
cd128244
DC		 6404 return output_len;
6405}
6406
6c223761
KB		 6407static ssize_t pqi_sas_address_show(struct device *dev,
6408 struct device_attribute *attr, char *buffer)
6409{
6410 struct pqi_ctrl_info *ctrl_info;
6411 struct scsi_device *sdev;
6412 struct pqi_scsi_dev *device;
6413 unsigned long flags;
6414 u64 sas_address;
6415
6416 sdev = to_scsi_device(dev);
6417 ctrl_info = shost_to_hba(sdev->host);
6418
6419 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6420
6421 device = sdev->hostdata;
6422 if (pqi_is_logical_device(device)) {
6423 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6424 flags);
6425 return -ENODEV;
6426 }
694c5d5b 6427
6c223761
KB		 6428 sas_address = device->sas_address;
6429
6430 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6431
6432 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
6433}
6434
6435static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
6436 struct device_attribute *attr, char *buffer)
6437{
6438 struct pqi_ctrl_info *ctrl_info;
6439 struct scsi_device *sdev;
6440 struct pqi_scsi_dev *device;
6441 unsigned long flags;
6442
6443 sdev = to_scsi_device(dev);
6444 ctrl_info = shost_to_hba(sdev->host);
6445
6446 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6447
6448 device = sdev->hostdata;
588a63fe 6449 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
6c223761
KB		 6450 buffer[1] = '\n';
6451 buffer[2] = '\0';
6452
6453 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6454
6455 return 2;
6456}
6457
a9f93392
KB		 6458static ssize_t pqi_raid_level_show(struct device *dev,
6459 struct device_attribute *attr, char *buffer)
6460{
6461 struct pqi_ctrl_info *ctrl_info;
6462 struct scsi_device *sdev;
6463 struct pqi_scsi_dev *device;
6464 unsigned long flags;
6465 char *raid_level;
6466
6467 sdev = to_scsi_device(dev);
6468 ctrl_info = shost_to_hba(sdev->host);
6469
6470 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6471
6472 device = sdev->hostdata;
6473
6474 if (pqi_is_logical_device(device))
6475 raid_level = pqi_raid_level_to_string(device->raid_level);
6476 else
6477 raid_level = "N/A";
6478
6479 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6480
6481 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
6482}
6483
cd128244
DC		 6484static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
6485static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
6486static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
cbe0c7b1
KB		 6487static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
6488static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
6c223761 6489 pqi_ssd_smart_path_enabled_show, NULL);
a9f93392 6490static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
6c223761
KB		 6491
6492static struct device_attribute *pqi_sdev_attrs[] = {
cd128244
DC		 6493 &dev_attr_lunid,
6494 &dev_attr_unique_id,
6495 &dev_attr_path_info,
6c223761
KB		 6496 &dev_attr_sas_address,
6497 &dev_attr_ssd_smart_path_enabled,
a9f93392 6498 &dev_attr_raid_level,
6c223761
KB		 6499 NULL
6500};
6501
6502static struct scsi_host_template pqi_driver_template = {
6503 .module = THIS_MODULE,
6504 .name = DRIVER_NAME_SHORT,
6505 .proc_name = DRIVER_NAME_SHORT,
6506 .queuecommand = pqi_scsi_queue_command,
6507 .scan_start = pqi_scan_start,
6508 .scan_finished = pqi_scan_finished,
6509 .this_id = -1,
6c223761
KB		 6510 .eh_device_reset_handler = pqi_eh_device_reset_handler,
6511 .ioctl = pqi_ioctl,
6512 .slave_alloc = pqi_slave_alloc,
ce143793 6513 .slave_configure = pqi_slave_configure,
52198226 6514 .map_queues = pqi_map_queues,
6c223761
KB		 6515 .sdev_attrs = pqi_sdev_attrs,
6516 .shost_attrs = pqi_shost_attrs,
6517};
6518
6519static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
6520{
6521 int rc;
6522 struct Scsi_Host *shost;
6523
6524 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
6525 if (!shost) {
6526 dev_err(&ctrl_info->pci_dev->dev,
6527 "scsi_host_alloc failed for controller %u\n",
6528 ctrl_info->ctrl_id);
6529 return -ENOMEM;
6530 }
6531
6532 shost->io_port = 0;
6533 shost->n_io_port = 0;
6534 shost->this_id = -1;
6535 shost->max_channel = PQI_MAX_BUS;
6536 shost->max_cmd_len = MAX_COMMAND_SIZE;
6537 shost->max_lun = ~0;
6538 shost->max_id = ~0;
6539 shost->max_sectors = ctrl_info->max_sectors;
6540 shost->can_queue = ctrl_info->scsi_ml_can_queue;
6541 shost->cmd_per_lun = shost->can_queue;
6542 shost->sg_tablesize = ctrl_info->sg_tablesize;
6543 shost->transportt = pqi_sas_transport_template;
52198226 6544 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
6c223761
KB		 6545 shost->unique_id = shost->irq;
6546 shost->nr_hw_queues = ctrl_info->num_queue_groups;
6547 shost->hostdata[0] = (unsigned long)ctrl_info;
6548
6549 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
6550 if (rc) {
6551 dev_err(&ctrl_info->pci_dev->dev,
6552 "scsi_add_host failed for controller %u\n",
6553 ctrl_info->ctrl_id);
6554 goto free_host;
6555 }
6556
6557 rc = pqi_add_sas_host(shost, ctrl_info);
6558 if (rc) {
6559 dev_err(&ctrl_info->pci_dev->dev,
6560 "add SAS host failed for controller %u\n",
6561 ctrl_info->ctrl_id);
6562 goto remove_host;
6563 }
6564
6565 ctrl_info->scsi_host = shost;
6566
6567 return 0;
6568
6569remove_host:
6570 scsi_remove_host(shost);
6571free_host:
6572 scsi_host_put(shost);
6573
6574 return rc;
6575}
6576
6577static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
6578{
6579 struct Scsi_Host *shost;
6580
6581 pqi_delete_sas_host(ctrl_info);
6582
6583 shost = ctrl_info->scsi_host;
6584 if (!shost)
6585 return;
6586
6587 scsi_remove_host(shost);
6588 scsi_host_put(shost);
6589}
6590
336b6819
KB		 6591static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
6592{
6593 int rc = 0;
6594 struct pqi_device_registers __iomem *pqi_registers;
6595 unsigned long timeout;
6596 unsigned int timeout_msecs;
6597 union pqi_reset_register reset_reg;
6c223761 6598
336b6819
KB		 6599 pqi_registers = ctrl_info->pqi_registers;
6600 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
6601 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
6602
6603 while (1) {
6604 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
6605 reset_reg.all_bits = readl(&pqi_registers->device_reset);
6606 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
6607 break;
6608 pqi_check_ctrl_health(ctrl_info);
6609 if (pqi_ctrl_offline(ctrl_info)) {
6610 rc = -ENXIO;
6611 break;
6612 }
6613 if (time_after(jiffies, timeout)) {
6614 rc = -ETIMEDOUT;
6615 break;
6616 }
6617 }
6618
6619 return rc;
6620}
6c223761
KB		 6621
6622static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
6623{
6624 int rc;
336b6819
KB		 6625 union pqi_reset_register reset_reg;
6626
6627 if (ctrl_info->pqi_reset_quiesce_supported) {
6628 rc = sis_pqi_reset_quiesce(ctrl_info);
6629 if (rc) {
6630 dev_err(&ctrl_info->pci_dev->dev,
6631 "PQI reset failed during quiesce with error %d\n",
6632 rc);
6633 return rc;
6634 }
6635 }
6c223761 6636
336b6819
KB		 6637 reset_reg.all_bits = 0;
6638 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
6639 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
6c223761 6640
336b6819 6641 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
6c223761 6642
336b6819 6643 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
6c223761
KB		 6644 if (rc)
6645 dev_err(&ctrl_info->pci_dev->dev,
336b6819 6646 "PQI reset failed with error %d\n", rc);
6c223761
KB		 6647
6648 return rc;
6649}
6650
6d90615f
MB		 6651static int pqi_get_ctrl_serial_number(struct pqi_ctrl_info *ctrl_info)
6652{
6653 int rc;
6654 struct bmic_sense_subsystem_info *sense_info;
6655
6656 sense_info = kzalloc(sizeof(*sense_info), GFP_KERNEL);
6657 if (!sense_info)
6658 return -ENOMEM;
6659
6660 rc = pqi_sense_subsystem_info(ctrl_info, sense_info);
6661 if (rc)
6662 goto out;
6663
6664 memcpy(ctrl_info->serial_number, sense_info->ctrl_serial_number,
6665 sizeof(sense_info->ctrl_serial_number));
6666 ctrl_info->serial_number[sizeof(sense_info->ctrl_serial_number)] = '\0';
6667
6668out:
6669 kfree(sense_info);
6670
6671 return rc;
6672}
6673
6674static int pqi_get_ctrl_product_details(struct pqi_ctrl_info *ctrl_info)
6c223761
KB		 6675{
6676 int rc;
6677 struct bmic_identify_controller *identify;
6678
6679 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
6680 if (!identify)
6681 return -ENOMEM;
6682
6683 rc = pqi_identify_controller(ctrl_info, identify);
6684 if (rc)
6685 goto out;
6686
6687 memcpy(ctrl_info->firmware_version, identify->firmware_version,
6688 sizeof(identify->firmware_version));
6689 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
6690 snprintf(ctrl_info->firmware_version +
6691 strlen(ctrl_info->firmware_version),
6692 sizeof(ctrl_info->firmware_version),
6693 "-%u", get_unaligned_le16(&identify->firmware_build_number));
6694
6d90615f
MB		 6695 memcpy(ctrl_info->model, identify->product_id,
6696 sizeof(identify->product_id));
6697 ctrl_info->model[sizeof(identify->product_id)] = '\0';
6698
6699 memcpy(ctrl_info->vendor, identify->vendor_id,
6700 sizeof(identify->vendor_id));
6701 ctrl_info->vendor[sizeof(identify->vendor_id)] = '\0';
6702
6c223761
KB		 6703out:
6704 kfree(identify);
6705
6706 return rc;
6707}
6708
b212c251
KB		 6709struct pqi_config_table_section_info {
6710 struct pqi_ctrl_info *ctrl_info;
6711 void *section;
6712 u32 section_offset;
6713 void __iomem *section_iomem_addr;
6714};
6715
6716static inline bool pqi_is_firmware_feature_supported(
6717 struct pqi_config_table_firmware_features *firmware_features,
6718 unsigned int bit_position)
98f87667 6719{
b212c251 6720 unsigned int byte_index;
98f87667 6721
b212c251 6722 byte_index = bit_position / BITS_PER_BYTE;
98f87667 6723
b212c251
KB		 6724 if (byte_index >= le16_to_cpu(firmware_features->num_elements))
6725 return false;
98f87667 6726
b212c251
KB		 6727 return firmware_features->features_supported[byte_index] &
6728 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6729}
6730
6731static inline bool pqi_is_firmware_feature_enabled(
6732 struct pqi_config_table_firmware_features *firmware_features,
6733 void __iomem *firmware_features_iomem_addr,
6734 unsigned int bit_position)
6735{
6736 unsigned int byte_index;
6737 u8 __iomem *features_enabled_iomem_addr;
6738
6739 byte_index = (bit_position / BITS_PER_BYTE) +
6740 (le16_to_cpu(firmware_features->num_elements) * 2);
6741
6742 features_enabled_iomem_addr = firmware_features_iomem_addr +
6743 offsetof(struct pqi_config_table_firmware_features,
6744 features_supported) + byte_index;
6745
6746 return *((__force u8 *)features_enabled_iomem_addr) &
6747 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6748}
6749
6750static inline void pqi_request_firmware_feature(
6751 struct pqi_config_table_firmware_features *firmware_features,
6752 unsigned int bit_position)
6753{
6754 unsigned int byte_index;
6755
6756 byte_index = (bit_position / BITS_PER_BYTE) +
6757 le16_to_cpu(firmware_features->num_elements);
6758
6759 firmware_features->features_supported[byte_index] |=
6760 (1 << (bit_position % BITS_PER_BYTE));
6761}
6762
6763static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info,
6764 u16 first_section, u16 last_section)
6765{
6766 struct pqi_vendor_general_request request;
6767
6768 memset(&request, 0, sizeof(request));
6769
6770 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
6771 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
6772 &request.header.iu_length);
6773 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE,
6774 &request.function_code);
6775 put_unaligned_le16(first_section,
6776 &request.data.config_table_update.first_section);
6777 put_unaligned_le16(last_section,
6778 &request.data.config_table_update.last_section);
6779
6780 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6781 0, NULL, NO_TIMEOUT);
6782}
6783
6784static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info,
6785 struct pqi_config_table_firmware_features *firmware_features,
6786 void __iomem *firmware_features_iomem_addr)
6787{
6788 void *features_requested;
6789 void __iomem *features_requested_iomem_addr;
6790
6791 features_requested = firmware_features->features_supported +
6792 le16_to_cpu(firmware_features->num_elements);
6793
6794 features_requested_iomem_addr = firmware_features_iomem_addr +
6795 (features_requested - (void *)firmware_features);
6796
6797 memcpy_toio(features_requested_iomem_addr, features_requested,
6798 le16_to_cpu(firmware_features->num_elements));
6799
6800 return pqi_config_table_update(ctrl_info,
6801 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES,
6802 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES);
6803}
6804
6805struct pqi_firmware_feature {
6806 char *feature_name;
6807 unsigned int feature_bit;
6808 bool supported;
6809 bool enabled;
6810 void (*feature_status)(struct pqi_ctrl_info *ctrl_info,
6811 struct pqi_firmware_feature *firmware_feature);
6812};
6813
6814static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info,
6815 struct pqi_firmware_feature *firmware_feature)
6816{
6817 if (!firmware_feature->supported) {
6818 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n",
6819 firmware_feature->feature_name);
6820 return;
6821 }
6822
6823 if (firmware_feature->enabled) {
6824 dev_info(&ctrl_info->pci_dev->dev,
6825 "%s enabled\n", firmware_feature->feature_name);
6826 return;
6827 }
6828
6829 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n",
6830 firmware_feature->feature_name);
6831}
6832
21432010 6833static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info,
6834 struct pqi_firmware_feature *firmware_feature)
6835{
6836 switch (firmware_feature->feature_bit) {
6837 case PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE:
6838 ctrl_info->soft_reset_handshake_supported =
6839 firmware_feature->enabled;
6840 break;
6841 case PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT:
6842 ctrl_info->raid_iu_timeout_supported =
6843 firmware_feature->enabled;
6844 break;
c2922f17
MB		 6845 case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT:
6846 ctrl_info->tmf_iu_timeout_supported =
6847 firmware_feature->enabled;
6848 break;
21432010 6849 }
6850
6851 pqi_firmware_feature_status(ctrl_info, firmware_feature);
6852}
6853
b212c251
KB		 6854static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info,
6855 struct pqi_firmware_feature *firmware_feature)
6856{
6857 if (firmware_feature->feature_status)
6858 firmware_feature->feature_status(ctrl_info, firmware_feature);
6859}
6860
6861static DEFINE_MUTEX(pqi_firmware_features_mutex);
6862
6863static struct pqi_firmware_feature pqi_firmware_features[] = {
6864 {
6865 .feature_name = "Online Firmware Activation",
6866 .feature_bit = PQI_FIRMWARE_FEATURE_OFA,
6867 .feature_status = pqi_firmware_feature_status,
6868 },
6869 {
6870 .feature_name = "Serial Management Protocol",
6871 .feature_bit = PQI_FIRMWARE_FEATURE_SMP,
6872 .feature_status = pqi_firmware_feature_status,
6873 },
4fd22c13
MR		 6874 {
6875 .feature_name = "New Soft Reset Handshake",
6876 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE,
21432010 6877 .feature_status = pqi_ctrl_update_feature_flags,
6878 },
6879 {
6880 .feature_name = "RAID IU Timeout",
6881 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT,
6882 .feature_status = pqi_ctrl_update_feature_flags,
4fd22c13 6883 },
c2922f17
MB		 6884 {
6885 .feature_name = "TMF IU Timeout",
6886 .feature_bit = PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT,
6887 .feature_status = pqi_ctrl_update_feature_flags,
6888 },
b212c251
KB		 6889};
6890
6891static void pqi_process_firmware_features(
6892 struct pqi_config_table_section_info *section_info)
6893{
6894 int rc;
6895 struct pqi_ctrl_info *ctrl_info;
6896 struct pqi_config_table_firmware_features *firmware_features;
6897 void __iomem *firmware_features_iomem_addr;
6898 unsigned int i;
6899 unsigned int num_features_supported;
6900
6901 ctrl_info = section_info->ctrl_info;
6902 firmware_features = section_info->section;
6903 firmware_features_iomem_addr = section_info->section_iomem_addr;
6904
6905 for (i = 0, num_features_supported = 0;
6906 i < ARRAY_SIZE(pqi_firmware_features); i++) {
6907 if (pqi_is_firmware_feature_supported(firmware_features,
6908 pqi_firmware_features[i].feature_bit)) {
6909 pqi_firmware_features[i].supported = true;
6910 num_features_supported++;
6911 } else {
6912 pqi_firmware_feature_update(ctrl_info,
6913 &pqi_firmware_features[i]);
6914 }
6915 }
6916
6917 if (num_features_supported == 0)
6918 return;
6919
6920 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6921 if (!pqi_firmware_features[i].supported)
6922 continue;
6923 pqi_request_firmware_feature(firmware_features,
6924 pqi_firmware_features[i].feature_bit);
6925 }
6926
6927 rc = pqi_enable_firmware_features(ctrl_info, firmware_features,
6928 firmware_features_iomem_addr);
6929 if (rc) {
6930 dev_err(&ctrl_info->pci_dev->dev,
6931 "failed to enable firmware features in PQI configuration table\n");
6932 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6933 if (!pqi_firmware_features[i].supported)
6934 continue;
6935 pqi_firmware_feature_update(ctrl_info,
6936 &pqi_firmware_features[i]);
6937 }
6938 return;
6939 }
6940
6941 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6942 if (!pqi_firmware_features[i].supported)
6943 continue;
6944 if (pqi_is_firmware_feature_enabled(firmware_features,
6945 firmware_features_iomem_addr,
4fd22c13 6946 pqi_firmware_features[i].feature_bit)) {
b212c251 6947 pqi_firmware_features[i].enabled = true;
4fd22c13 6948 }
b212c251
KB		 6949 pqi_firmware_feature_update(ctrl_info,
6950 &pqi_firmware_features[i]);
6951 }
6952}
6953
6954static void pqi_init_firmware_features(void)
6955{
6956 unsigned int i;
6957
6958 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6959 pqi_firmware_features[i].supported = false;
6960 pqi_firmware_features[i].enabled = false;
6961 }
6962}
6963
6964static void pqi_process_firmware_features_section(
6965 struct pqi_config_table_section_info *section_info)
6966{
6967 mutex_lock(&pqi_firmware_features_mutex);
6968 pqi_init_firmware_features();
6969 pqi_process_firmware_features(section_info);
6970 mutex_unlock(&pqi_firmware_features_mutex);
6971}
6972
98f87667
KB		 6973static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
6974{
6975 u32 table_length;
6976 u32 section_offset;
6977 void __iomem *table_iomem_addr;
6978 struct pqi_config_table *config_table;
6979 struct pqi_config_table_section_header *section;
b212c251 6980 struct pqi_config_table_section_info section_info;
98f87667
KB		 6981
6982 table_length = ctrl_info->config_table_length;
b212c251
KB		 6983 if (table_length == 0)
6984 return 0;
98f87667
KB		 6985
6986 config_table = kmalloc(table_length, GFP_KERNEL);
6987 if (!config_table) {
6988 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 6989 "failed to allocate memory for PQI configuration table\n");
98f87667
KB		 6990 return -ENOMEM;
6991 }
6992
6993 /*
6994 * Copy the config table contents from I/O memory space into the
6995 * temporary buffer.
6996 */
6997 table_iomem_addr = ctrl_info->iomem_base +
6998 ctrl_info->config_table_offset;
6999 memcpy_fromio(config_table, table_iomem_addr, table_length);
7000
b212c251 7001 section_info.ctrl_info = ctrl_info;
98f87667
KB		 7002 section_offset =
7003 get_unaligned_le32(&config_table->first_section_offset);
7004
7005 while (section_offset) {
7006 section = (void *)config_table + section_offset;
7007
b212c251
KB		 7008 section_info.section = section;
7009 section_info.section_offset = section_offset;
7010 section_info.section_iomem_addr =
7011 table_iomem_addr + section_offset;
7012
98f87667 7013 switch (get_unaligned_le16(&section->section_id)) {
b212c251
KB		 7014 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES:
7015 pqi_process_firmware_features_section(&section_info);
7016 break;
98f87667 7017 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
5a259e32
KB		 7018 if (pqi_disable_heartbeat)
7019 dev_warn(&ctrl_info->pci_dev->dev,
7020 "heartbeat disabled by module parameter\n");
7021 else
7022 ctrl_info->heartbeat_counter =
7023 table_iomem_addr +
7024 section_offset +
7025 offsetof(
7026 struct pqi_config_table_heartbeat,
7027 heartbeat_counter);
98f87667 7028 break;
4fd22c13
MR		 7029 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET:
7030 ctrl_info->soft_reset_status =
7031 table_iomem_addr +
7032 section_offset +
7033 offsetof(struct pqi_config_table_soft_reset,
7034 soft_reset_status);
7035 break;
98f87667
KB		 7036 }
7037
7038 section_offset =
7039 get_unaligned_le16(&section->next_section_offset);
7040 }
7041
7042 kfree(config_table);
7043
7044 return 0;
7045}
7046
162d7753
KB		 7047/* Switches the controller from PQI mode back into SIS mode. */
7048
7049static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
7050{
7051 int rc;
7052
061ef06a 7053 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
162d7753
KB		 7054 rc = pqi_reset(ctrl_info);
7055 if (rc)
7056 return rc;
4f078e24
KB		 7057 rc = sis_reenable_sis_mode(ctrl_info);
7058 if (rc) {
7059 dev_err(&ctrl_info->pci_dev->dev,
7060 "re-enabling SIS mode failed with error %d\n", rc);
7061 return rc;
7062 }
162d7753
KB		 7063 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7064
7065 return 0;
7066}
7067
7068/*
7069 * If the controller isn't already in SIS mode, this function forces it into
7070 * SIS mode.
7071 */
7072
7073static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
ff6abb73
KB		 7074{
7075 if (!sis_is_firmware_running(ctrl_info))
7076 return -ENXIO;
7077
162d7753
KB		 7078 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
7079 return 0;
7080
7081 if (sis_is_kernel_up(ctrl_info)) {
7082 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7083 return 0;
ff6abb73
KB		 7084 }
7085
162d7753 7086 return pqi_revert_to_sis_mode(ctrl_info);
ff6abb73
KB		 7087}
7088
0530736e
KB		 7089#define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000
7090
6c223761
KB		 7091static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
7092{
7093 int rc;
7094
0530736e
KB		 7095 if (reset_devices) {
7096 sis_soft_reset(ctrl_info);
7097 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY);
7098 } else {
7099 rc = pqi_force_sis_mode(ctrl_info);
7100 if (rc)
7101 return rc;
7102 }
6c223761
KB		 7103
7104 /*
7105 * Wait until the controller is ready to start accepting SIS
7106 * commands.
7107 */
7108 rc = sis_wait_for_ctrl_ready(ctrl_info);
8845fdfa 7109 if (rc)
6c223761 7110 return rc;
6c223761
KB		 7111
7112 /*
7113 * Get the controller properties. This allows us to determine
7114 * whether or not it supports PQI mode.
7115 */
7116 rc = sis_get_ctrl_properties(ctrl_info);
7117 if (rc) {
7118 dev_err(&ctrl_info->pci_dev->dev,
7119 "error obtaining controller properties\n");
7120 return rc;
7121 }
7122
7123 rc = sis_get_pqi_capabilities(ctrl_info);
7124 if (rc) {
7125 dev_err(&ctrl_info->pci_dev->dev,
7126 "error obtaining controller capabilities\n");
7127 return rc;
7128 }
7129
d727a776
KB		 7130 if (reset_devices) {
7131 if (ctrl_info->max_outstanding_requests >
7132 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
7133 ctrl_info->max_outstanding_requests =
7134 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
7135 } else {
7136 if (ctrl_info->max_outstanding_requests >
7137 PQI_MAX_OUTSTANDING_REQUESTS)
7138 ctrl_info->max_outstanding_requests =
7139 PQI_MAX_OUTSTANDING_REQUESTS;
7140 }
6c223761
KB		 7141
7142 pqi_calculate_io_resources(ctrl_info);
7143
7144 rc = pqi_alloc_error_buffer(ctrl_info);
7145 if (rc) {
7146 dev_err(&ctrl_info->pci_dev->dev,
7147 "failed to allocate PQI error buffer\n");
7148 return rc;
7149 }
7150
7151 /*
7152 * If the function we are about to call succeeds, the
7153 * controller will transition from legacy SIS mode
7154 * into PQI mode.
7155 */
7156 rc = sis_init_base_struct_addr(ctrl_info);
7157 if (rc) {
7158 dev_err(&ctrl_info->pci_dev->dev,
7159 "error initializing PQI mode\n");
7160 return rc;
7161 }
7162
7163 /* Wait for the controller to complete the SIS -> PQI transition. */
7164 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
7165 if (rc) {
7166 dev_err(&ctrl_info->pci_dev->dev,
7167 "transition to PQI mode failed\n");
7168 return rc;
7169 }
7170
7171 /* From here on, we are running in PQI mode. */
7172 ctrl_info->pqi_mode_enabled = true;
ff6abb73 7173 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6c223761
KB		 7174
7175 rc = pqi_alloc_admin_queues(ctrl_info);
7176 if (rc) {
7177 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 7178 "failed to allocate admin queues\n");
6c223761
KB		 7179 return rc;
7180 }
7181
7182 rc = pqi_create_admin_queues(ctrl_info);
7183 if (rc) {
7184 dev_err(&ctrl_info->pci_dev->dev,
7185 "error creating admin queues\n");
7186 return rc;
7187 }
7188
7189 rc = pqi_report_device_capability(ctrl_info);
7190 if (rc) {
7191 dev_err(&ctrl_info->pci_dev->dev,
7192 "obtaining device capability failed\n");
7193 return rc;
7194 }
7195
7196 rc = pqi_validate_device_capability(ctrl_info);
7197 if (rc)
7198 return rc;
7199
7200 pqi_calculate_queue_resources(ctrl_info);
7201
7202 rc = pqi_enable_msix_interrupts(ctrl_info);
7203 if (rc)
7204 return rc;
7205
7206 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
7207 ctrl_info->max_msix_vectors =
7208 ctrl_info->num_msix_vectors_enabled;
7209 pqi_calculate_queue_resources(ctrl_info);
7210 }
7211
7212 rc = pqi_alloc_io_resources(ctrl_info);
7213 if (rc)
7214 return rc;
7215
7216 rc = pqi_alloc_operational_queues(ctrl_info);
d87d5474
KB		 7217 if (rc) {
7218 dev_err(&ctrl_info->pci_dev->dev,
7219 "failed to allocate operational queues\n");
6c223761 7220 return rc;
d87d5474 7221 }
6c223761
KB		 7222
7223 pqi_init_operational_queues(ctrl_info);
7224
7225 rc = pqi_request_irqs(ctrl_info);
7226 if (rc)
7227 return rc;
7228
6c223761
KB		 7229 rc = pqi_create_queues(ctrl_info);
7230 if (rc)
7231 return rc;
7232
061ef06a
KB		 7233 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7234
7235 ctrl_info->controller_online = true;
b212c251
KB		 7236
7237 rc = pqi_process_config_table(ctrl_info);
7238 if (rc)
7239 return rc;
7240
061ef06a 7241 pqi_start_heartbeat_timer(ctrl_info);
6c223761 7242
6a50d6ad 7243 rc = pqi_enable_events(ctrl_info);
6c223761
KB		 7244 if (rc) {
7245 dev_err(&ctrl_info->pci_dev->dev,
6a50d6ad 7246 "error enabling events\n");
6c223761
KB		 7247 return rc;
7248 }
7249
6c223761
KB		 7250 /* Register with the SCSI subsystem. */
7251 rc = pqi_register_scsi(ctrl_info);
7252 if (rc)
7253 return rc;
7254
6d90615f
MB		 7255 rc = pqi_get_ctrl_product_details(ctrl_info);
7256 if (rc) {
7257 dev_err(&ctrl_info->pci_dev->dev,
7258 "error obtaining product details\n");
7259 return rc;
7260 }
7261
7262 rc = pqi_get_ctrl_serial_number(ctrl_info);
6c223761
KB		 7263 if (rc) {
7264 dev_err(&ctrl_info->pci_dev->dev,
6d90615f 7265 "error obtaining ctrl serial number\n");
6c223761
KB		 7266 return rc;
7267 }
7268
171c2865
DC		 7269 rc = pqi_set_diag_rescan(ctrl_info);
7270 if (rc) {
7271 dev_err(&ctrl_info->pci_dev->dev,
7272 "error enabling multi-lun rescan\n");
7273 return rc;
7274 }
7275
6c223761
KB		 7276 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7277 if (rc) {
7278 dev_err(&ctrl_info->pci_dev->dev,
7279 "error updating host wellness\n");
7280 return rc;
7281 }
7282
7283 pqi_schedule_update_time_worker(ctrl_info);
7284
7285 pqi_scan_scsi_devices(ctrl_info);
7286
7287 return 0;
7288}
7289
061ef06a
KB		 7290static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
7291{
7292 unsigned int i;
7293 struct pqi_admin_queues *admin_queues;
7294 struct pqi_event_queue *event_queue;
7295
7296 admin_queues = &ctrl_info->admin_queues;
7297 admin_queues->iq_pi_copy = 0;
7298 admin_queues->oq_ci_copy = 0;
dac12fbc 7299 writel(0, admin_queues->oq_pi);
061ef06a
KB		 7300
7301 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
7302 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
7303 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
7304 ctrl_info->queue_groups[i].oq_ci_copy = 0;
7305
dac12fbc
KB		 7306 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]);
7307 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]);
7308 writel(0, ctrl_info->queue_groups[i].oq_pi);
061ef06a
KB		 7309 }
7310
7311 event_queue = &ctrl_info->event_queue;
dac12fbc 7312 writel(0, event_queue->oq_pi);
061ef06a
KB		 7313 event_queue->oq_ci_copy = 0;
7314}
7315
7316static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
7317{
7318 int rc;
7319
7320 rc = pqi_force_sis_mode(ctrl_info);
7321 if (rc)
7322 return rc;
7323
7324 /*
7325 * Wait until the controller is ready to start accepting SIS
7326 * commands.
7327 */
7328 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
7329 if (rc)
7330 return rc;
7331
4fd22c13
MR		 7332 /*
7333 * Get the controller properties. This allows us to determine
7334 * whether or not it supports PQI mode.
7335 */
7336 rc = sis_get_ctrl_properties(ctrl_info);
7337 if (rc) {
7338 dev_err(&ctrl_info->pci_dev->dev,
7339 "error obtaining controller properties\n");
7340 return rc;
7341 }
7342
7343 rc = sis_get_pqi_capabilities(ctrl_info);
7344 if (rc) {
7345 dev_err(&ctrl_info->pci_dev->dev,
7346 "error obtaining controller capabilities\n");
7347 return rc;
7348 }
7349
061ef06a
KB		 7350 /*
7351 * If the function we are about to call succeeds, the
7352 * controller will transition from legacy SIS mode
7353 * into PQI mode.
7354 */
7355 rc = sis_init_base_struct_addr(ctrl_info);
7356 if (rc) {
7357 dev_err(&ctrl_info->pci_dev->dev,
7358 "error initializing PQI mode\n");
7359 return rc;
7360 }
7361
7362 /* Wait for the controller to complete the SIS -> PQI transition. */
7363 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
7364 if (rc) {
7365 dev_err(&ctrl_info->pci_dev->dev,
7366 "transition to PQI mode failed\n");
7367 return rc;
7368 }
7369
7370 /* From here on, we are running in PQI mode. */
7371 ctrl_info->pqi_mode_enabled = true;
7372 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7373
7374 pqi_reinit_queues(ctrl_info);
7375
7376 rc = pqi_create_admin_queues(ctrl_info);
7377 if (rc) {
7378 dev_err(&ctrl_info->pci_dev->dev,
7379 "error creating admin queues\n");
7380 return rc;
7381 }
7382
7383 rc = pqi_create_queues(ctrl_info);
7384 if (rc)
7385 return rc;
7386
7387 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7388
7389 ctrl_info->controller_online = true;
061ef06a
KB		 7390 pqi_ctrl_unblock_requests(ctrl_info);
7391
4fd22c13
MR		 7392 rc = pqi_process_config_table(ctrl_info);
7393 if (rc)
7394 return rc;
7395
7396 pqi_start_heartbeat_timer(ctrl_info);
7397
061ef06a
KB		 7398 rc = pqi_enable_events(ctrl_info);
7399 if (rc) {
7400 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 7401 "error enabling events\n");
061ef06a
KB		 7402 return rc;
7403 }
7404
6d90615f 7405 rc = pqi_get_ctrl_product_details(ctrl_info);
4fd22c13
MR		 7406 if (rc) {
7407 dev_err(&ctrl_info->pci_dev->dev,
694c5d5b 7408 "error obtaining product details\n");
4fd22c13
MR		 7409 return rc;
7410 }
7411
171c2865
DC		 7412 rc = pqi_set_diag_rescan(ctrl_info);
7413 if (rc) {
7414 dev_err(&ctrl_info->pci_dev->dev,
7415 "error enabling multi-lun rescan\n");
7416 return rc;
7417 }
7418
061ef06a
KB		 7419 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7420 if (rc) {
7421 dev_err(&ctrl_info->pci_dev->dev,
7422 "error updating host wellness\n");
7423 return rc;
7424 }
7425
7426 pqi_schedule_update_time_worker(ctrl_info);
7427
7428 pqi_scan_scsi_devices(ctrl_info);
7429
7430 return 0;
7431}
7432
a81ed5f3
KB		 7433static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
7434 u16 timeout)
7435{
d20df83b
BOS		 7436 int rc;
7437
7438 rc = pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
a81ed5f3 7439 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
d20df83b
BOS		 7440
7441 return pcibios_err_to_errno(rc);
a81ed5f3
KB		 7442}
7443
6c223761
KB		 7444static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
7445{
7446 int rc;
7447 u64 mask;
7448
7449 rc = pci_enable_device(ctrl_info->pci_dev);
7450 if (rc) {
7451 dev_err(&ctrl_info->pci_dev->dev,
7452 "failed to enable PCI device\n");
7453 return rc;
7454 }
7455
7456 if (sizeof(dma_addr_t) > 4)
7457 mask = DMA_BIT_MASK(64);
7458 else
7459 mask = DMA_BIT_MASK(32);
7460
1d94f06e 7461 rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask);
6c223761
KB		 7462 if (rc) {
7463 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
7464 goto disable_device;
7465 }
7466
7467 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
7468 if (rc) {
7469 dev_err(&ctrl_info->pci_dev->dev,
7470 "failed to obtain PCI resources\n");
7471 goto disable_device;
7472 }
7473
4bdc0d67 7474 ctrl_info->iomem_base = ioremap(pci_resource_start(
6c223761
KB		 7475 ctrl_info->pci_dev, 0),
7476 sizeof(struct pqi_ctrl_registers));
7477 if (!ctrl_info->iomem_base) {
7478 dev_err(&ctrl_info->pci_dev->dev,
7479 "failed to map memory for controller registers\n");
7480 rc = -ENOMEM;
7481 goto release_regions;
7482 }
7483
a81ed5f3
KB		 7484#define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
7485
7486 /* Increase the PCIe completion timeout. */
7487 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
7488 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
7489 if (rc) {
7490 dev_err(&ctrl_info->pci_dev->dev,
7491 "failed to set PCIe completion timeout\n");
7492 goto release_regions;
7493 }
7494
6c223761
KB		 7495 /* Enable bus mastering. */
7496 pci_set_master(ctrl_info->pci_dev);
7497
cbe0c7b1
KB		 7498 ctrl_info->registers = ctrl_info->iomem_base;
7499 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
7500
6c223761
KB		 7501 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
7502
7503 return 0;
7504
7505release_regions:
7506 pci_release_regions(ctrl_info->pci_dev);
7507disable_device:
7508 pci_disable_device(ctrl_info->pci_dev);
7509
7510 return rc;
7511}
7512
7513static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
7514{
7515 iounmap(ctrl_info->iomem_base);
7516 pci_release_regions(ctrl_info->pci_dev);
cbe0c7b1
KB		 7517 if (pci_is_enabled(ctrl_info->pci_dev))
7518 pci_disable_device(ctrl_info->pci_dev);
6c223761
KB		 7519 pci_set_drvdata(ctrl_info->pci_dev, NULL);
7520}
7521
7522static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
7523{
7524 struct pqi_ctrl_info *ctrl_info;
7525
7526 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
7527 GFP_KERNEL, numa_node);
7528 if (!ctrl_info)
7529 return NULL;
7530
7531 mutex_init(&ctrl_info->scan_mutex);
7561a7e4 7532 mutex_init(&ctrl_info->lun_reset_mutex);
4fd22c13 7533 mutex_init(&ctrl_info->ofa_mutex);
6c223761
KB		 7534
7535 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
7536 spin_lock_init(&ctrl_info->scsi_device_list_lock);
7537
7538 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
7539 atomic_set(&ctrl_info->num_interrupts, 0);
0530736e 7540 atomic_set(&ctrl_info->sync_cmds_outstanding, 0);
6c223761
KB		 7541
7542 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
7543 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
7544
74a0f573 7545 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
5f310425 7546 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
98f87667 7547
6c223761
KB		 7548 sema_init(&ctrl_info->sync_request_sem,
7549 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
7561a7e4 7550 init_waitqueue_head(&ctrl_info->block_requests_wait);
6c223761 7551
376fb880
KB		 7552 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
7553 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
7554 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
7555 pqi_raid_bypass_retry_worker);
7556
6c223761 7557 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
061ef06a 7558 ctrl_info->irq_mode = IRQ_MODE_NONE;
6c223761
KB		 7559 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
7560
7561 return ctrl_info;
7562}
7563
7564static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
7565{
7566 kfree(ctrl_info);
7567}
7568
7569static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
7570{
98bf061b
KB		 7571 pqi_free_irqs(ctrl_info);
7572 pqi_disable_msix_interrupts(ctrl_info);
6c223761
KB		 7573}
7574
7575static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
7576{
7577 pqi_stop_heartbeat_timer(ctrl_info);
7578 pqi_free_interrupts(ctrl_info);
7579 if (ctrl_info->queue_memory_base)
7580 dma_free_coherent(&ctrl_info->pci_dev->dev,
7581 ctrl_info->queue_memory_length,
7582 ctrl_info->queue_memory_base,
7583 ctrl_info->queue_memory_base_dma_handle);
7584 if (ctrl_info->admin_queue_memory_base)
7585 dma_free_coherent(&ctrl_info->pci_dev->dev,
7586 ctrl_info->admin_queue_memory_length,
7587 ctrl_info->admin_queue_memory_base,
7588 ctrl_info->admin_queue_memory_base_dma_handle);
7589 pqi_free_all_io_requests(ctrl_info);
7590 if (ctrl_info->error_buffer)
7591 dma_free_coherent(&ctrl_info->pci_dev->dev,
7592 ctrl_info->error_buffer_length,
7593 ctrl_info->error_buffer,
7594 ctrl_info->error_buffer_dma_handle);
7595 if (ctrl_info->iomem_base)
7596 pqi_cleanup_pci_init(ctrl_info);
7597 pqi_free_ctrl_info(ctrl_info);
7598}
7599
7600static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
7601{
061ef06a
KB		 7602 pqi_cancel_rescan_worker(ctrl_info);
7603 pqi_cancel_update_time_worker(ctrl_info);
e57a1f9b
KB		 7604 pqi_remove_all_scsi_devices(ctrl_info);
7605 pqi_unregister_scsi(ctrl_info);
162d7753
KB		 7606 if (ctrl_info->pqi_mode_enabled)
7607 pqi_revert_to_sis_mode(ctrl_info);
6c223761
KB		 7608 pqi_free_ctrl_resources(ctrl_info);
7609}
7610
4fd22c13
MR		 7611static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info)
7612{
7613 pqi_cancel_update_time_worker(ctrl_info);
7614 pqi_cancel_rescan_worker(ctrl_info);
7615 pqi_wait_until_lun_reset_finished(ctrl_info);
7616 pqi_wait_until_scan_finished(ctrl_info);
7617 pqi_ctrl_ofa_start(ctrl_info);
7618 pqi_ctrl_block_requests(ctrl_info);
7619 pqi_ctrl_wait_until_quiesced(ctrl_info);
7620 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS);
7621 pqi_fail_io_queued_for_all_devices(ctrl_info);
7622 pqi_wait_until_inbound_queues_empty(ctrl_info);
7623 pqi_stop_heartbeat_timer(ctrl_info);
7624 ctrl_info->pqi_mode_enabled = false;
7625 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7626}
7627
7628static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info)
7629{
7630 pqi_ofa_free_host_buffer(ctrl_info);
7631 ctrl_info->pqi_mode_enabled = true;
7632 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7633 ctrl_info->controller_online = true;
7634 pqi_ctrl_unblock_requests(ctrl_info);
7635 pqi_start_heartbeat_timer(ctrl_info);
7636 pqi_schedule_update_time_worker(ctrl_info);
7637 pqi_clear_soft_reset_status(ctrl_info,
7638 PQI_SOFT_RESET_ABORT);
7639 pqi_scan_scsi_devices(ctrl_info);
7640}
7641
7642static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info,
7643 u32 total_size, u32 chunk_size)
7644{
7645 u32 sg_count;
7646 u32 size;
7647 int i;
7648 struct pqi_sg_descriptor *mem_descriptor = NULL;
7649 struct device *dev;
7650 struct pqi_ofa_memory *ofap;
7651
7652 dev = &ctrl_info->pci_dev->dev;
7653
7654 sg_count = (total_size + chunk_size - 1);
e52c9e07 7655 sg_count /= chunk_size;
4fd22c13
MR		 7656
7657 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7658
7659 if (sg_count*chunk_size < total_size)
7660 goto out;
7661
7662 ctrl_info->pqi_ofa_chunk_virt_addr =
7663 kcalloc(sg_count, sizeof(void *), GFP_KERNEL);
7664 if (!ctrl_info->pqi_ofa_chunk_virt_addr)
7665 goto out;
7666
7667 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) {
7668 dma_addr_t dma_handle;
7669
7670 ctrl_info->pqi_ofa_chunk_virt_addr[i] =
750afb08
LC		 7671 dma_alloc_coherent(dev, chunk_size, &dma_handle,
7672 GFP_KERNEL);
4fd22c13
MR		 7673
7674 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i])
7675 break;
7676
7677 mem_descriptor = &ofap->sg_descriptor[i];
7678 put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address);
7679 put_unaligned_le32 (chunk_size, &mem_descriptor->length);
7680 }
7681
7682 if (!size || size < total_size)
7683 goto out_free_chunks;
7684
7685 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags);
7686 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors);
7687 put_unaligned_le32(size, &ofap->bytes_allocated);
7688
7689 return 0;
7690
7691out_free_chunks:
7692 while (--i >= 0) {
7693 mem_descriptor = &ofap->sg_descriptor[i];
7694 dma_free_coherent(dev, chunk_size,
7695 ctrl_info->pqi_ofa_chunk_virt_addr[i],
7696 get_unaligned_le64(&mem_descriptor->address));
7697 }
7698 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
7699
7700out:
7701 put_unaligned_le32 (0, &ofap->bytes_allocated);
7702 return -ENOMEM;
7703}
7704
7705static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info)
7706{
7707 u32 total_size;
7708 u32 min_chunk_size;
7709 u32 chunk_sz;
7710
7711 total_size = le32_to_cpu(
7712 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated);
7713 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS;
7714
7715 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2)
7716 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz))
7717 return 0;
7718
7719 return -ENOMEM;
7720}
7721
7722static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
7723 u32 bytes_requested)
7724{
7725 struct pqi_ofa_memory *pqi_ofa_memory;
7726 struct device *dev;
7727
7728 dev = &ctrl_info->pci_dev->dev;
750afb08
LC		 7729 pqi_ofa_memory = dma_alloc_coherent(dev,
7730 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH,
7731 &ctrl_info->pqi_ofa_mem_dma_handle,
7732 GFP_KERNEL);
4fd22c13
MR		 7733
7734 if (!pqi_ofa_memory)
7735 return;
7736
7737 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version);
7738 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE,
7739 sizeof(pqi_ofa_memory->signature));
7740 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested);
7741
7742 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory;
7743
7744 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) {
7745 dev_err(dev, "Failed to allocate host buffer of size = %u",
7746 bytes_requested);
7747 }
694c5d5b
KB		 7748
7749 return;
4fd22c13
MR		 7750}
7751
7752static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info)
7753{
7754 int i;
7755 struct pqi_sg_descriptor *mem_descriptor;
7756 struct pqi_ofa_memory *ofap;
7757
7758 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7759
7760 if (!ofap)
7761 return;
7762
7763 if (!ofap->bytes_allocated)
7764 goto out;
7765
7766 mem_descriptor = ofap->sg_descriptor;
7767
7768 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors);
7769 i++) {
7770 dma_free_coherent(&ctrl_info->pci_dev->dev,
7771 get_unaligned_le32(&mem_descriptor[i].length),
7772 ctrl_info->pqi_ofa_chunk_virt_addr[i],
7773 get_unaligned_le64(&mem_descriptor[i].address));
7774 }
7775 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
7776
7777out:
7778 dma_free_coherent(&ctrl_info->pci_dev->dev,
7779 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap,
7780 ctrl_info->pqi_ofa_mem_dma_handle);
7781 ctrl_info->pqi_ofa_mem_virt_addr = NULL;
7782}
7783
7784static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info)
7785{
7786 struct pqi_vendor_general_request request;
7787 size_t size;
7788 struct pqi_ofa_memory *ofap;
7789
7790 memset(&request, 0, sizeof(request));
7791
7792 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7793
7794 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
7795 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
7796 &request.header.iu_length);
7797 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE,
7798 &request.function_code);
7799
7800 if (ofap) {
7801 size = offsetof(struct pqi_ofa_memory, sg_descriptor) +
7802 get_unaligned_le16(&ofap->num_memory_descriptors) *
7803 sizeof(struct pqi_sg_descriptor);
7804
7805 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle,
7806 &request.data.ofa_memory_allocation.buffer_address);
7807 put_unaligned_le32(size,
7808 &request.data.ofa_memory_allocation.buffer_length);
7809
7810 }
7811
7812 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
7813 0, NULL, NO_TIMEOUT);
7814}
7815
4fd22c13
MR		 7816static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info)
7817{
7818 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY);
7819 return pqi_ctrl_init_resume(ctrl_info);
7820}
7821
3c50976f
KB		 7822static void pqi_perform_lockup_action(void)
7823{
7824 switch (pqi_lockup_action) {
7825 case PANIC:
7826 panic("FATAL: Smart Family Controller lockup detected");
7827 break;
7828 case REBOOT:
7829 emergency_restart();
7830 break;
7831 case NONE:
7832 default:
7833 break;
7834 }
7835}
7836
5f310425
KB		 7837static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
7838 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
7839 .status = SAM_STAT_CHECK_CONDITION,
7840};
7841
7842static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 7843{
7844 unsigned int i;
376fb880 7845 struct pqi_io_request *io_request;
376fb880
KB		 7846 struct scsi_cmnd *scmd;
7847
5f310425
KB		 7848 for (i = 0; i < ctrl_info->max_io_slots; i++) {
7849 io_request = &ctrl_info->io_request_pool[i];
7850 if (atomic_read(&io_request->refcount) == 0)
7851 continue;
376fb880 7852
5f310425
KB		 7853 scmd = io_request->scmd;
7854 if (scmd) {
7855 set_host_byte(scmd, DID_NO_CONNECT);
7856 } else {
7857 io_request->status = -ENXIO;
7858 io_request->error_info =
7859 &pqi_ctrl_offline_raid_error_info;
376fb880 7860 }
5f310425
KB		 7861
7862 io_request->io_complete_callback(io_request,
7863 io_request->context);
376fb880
KB		 7864 }
7865}
7866
5f310425 7867static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
376fb880 7868{
5f310425
KB		 7869 pqi_perform_lockup_action();
7870 pqi_stop_heartbeat_timer(ctrl_info);
7871 pqi_free_interrupts(ctrl_info);
7872 pqi_cancel_rescan_worker(ctrl_info);
7873 pqi_cancel_update_time_worker(ctrl_info);
7874 pqi_ctrl_wait_until_quiesced(ctrl_info);
7875 pqi_fail_all_outstanding_requests(ctrl_info);
7876 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
7877 pqi_ctrl_unblock_requests(ctrl_info);
7878}
7879
7880static void pqi_ctrl_offline_worker(struct work_struct *work)
7881{
7882 struct pqi_ctrl_info *ctrl_info;
7883
7884 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
7885 pqi_take_ctrl_offline_deferred(ctrl_info);
376fb880
KB		 7886}
7887
7888static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
7889{
5f310425
KB		 7890 if (!ctrl_info->controller_online)
7891 return;
7892
376fb880 7893 ctrl_info->controller_online = false;
5f310425
KB		 7894 ctrl_info->pqi_mode_enabled = false;
7895 pqi_ctrl_block_requests(ctrl_info);
5a259e32
KB		 7896 if (!pqi_disable_ctrl_shutdown)
7897 sis_shutdown_ctrl(ctrl_info);
376fb880
KB		 7898 pci_disable_device(ctrl_info->pci_dev);
7899 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
5f310425 7900 schedule_work(&ctrl_info->ctrl_offline_work);
376fb880
KB		 7901}
7902
d91d7820 7903static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
6c223761
KB		 7904 const struct pci_device_id *id)
7905{
7906 char *ctrl_description;
7907
37b36847 7908 if (id->driver_data)
6c223761 7909 ctrl_description = (char *)id->driver_data;
37b36847
KB		 7910 else
7911 ctrl_description = "Microsemi Smart Family Controller";
6c223761 7912
d91d7820 7913 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
6c223761
KB		 7914}
7915
d91d7820
KB		 7916static int pqi_pci_probe(struct pci_dev *pci_dev,
7917 const struct pci_device_id *id)
6c223761
KB		 7918{
7919 int rc;
62dc51fb 7920 int node, cp_node;
6c223761
KB		 7921 struct pqi_ctrl_info *ctrl_info;
7922
d91d7820 7923 pqi_print_ctrl_info(pci_dev, id);
6c223761
KB		 7924
7925 if (pqi_disable_device_id_wildcards &&
7926 id->subvendor == PCI_ANY_ID &&
7927 id->subdevice == PCI_ANY_ID) {
d91d7820 7928 dev_warn(&pci_dev->dev,
6c223761
KB		 7929 "controller not probed because device ID wildcards are disabled\n");
7930 return -ENODEV;
7931 }
7932
7933 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
d91d7820 7934 dev_warn(&pci_dev->dev,
6c223761
KB		 7935 "controller device ID matched using wildcards\n");
7936
d91d7820 7937 node = dev_to_node(&pci_dev->dev);
62dc51fb
SB		 7938 if (node == NUMA_NO_NODE) {
7939 cp_node = cpu_to_node(0);
7940 if (cp_node == NUMA_NO_NODE)
7941 cp_node = 0;
7942 set_dev_node(&pci_dev->dev, cp_node);
7943 }
6c223761
KB		 7944
7945 ctrl_info = pqi_alloc_ctrl_info(node);
7946 if (!ctrl_info) {
d91d7820 7947 dev_err(&pci_dev->dev,
6c223761
KB		 7948 "failed to allocate controller info block\n");
7949 return -ENOMEM;
7950 }
7951
d91d7820 7952 ctrl_info->pci_dev = pci_dev;
6c223761
KB		 7953
7954 rc = pqi_pci_init(ctrl_info);
7955 if (rc)
7956 goto error;
7957
7958 rc = pqi_ctrl_init(ctrl_info);
7959 if (rc)
7960 goto error;
7961
7962 return 0;
7963
7964error:
7965 pqi_remove_ctrl(ctrl_info);
7966
7967 return rc;
7968}
7969
d91d7820 7970static void pqi_pci_remove(struct pci_dev *pci_dev)
6c223761
KB		 7971{
7972 struct pqi_ctrl_info *ctrl_info;
7973
d91d7820 7974 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 7975 if (!ctrl_info)
7976 return;
7977
1e46731e
MR		 7978 ctrl_info->in_shutdown = true;
7979
6c223761
KB		 7980 pqi_remove_ctrl(ctrl_info);
7981}
7982
0530736e
KB		 7983static void pqi_crash_if_pending_command(struct pqi_ctrl_info *ctrl_info)
7984{
7985 unsigned int i;
7986 struct pqi_io_request *io_request;
7987 struct scsi_cmnd *scmd;
7988
7989 for (i = 0; i < ctrl_info->max_io_slots; i++) {
7990 io_request = &ctrl_info->io_request_pool[i];
7991 if (atomic_read(&io_request->refcount) == 0)
7992 continue;
7993 scmd = io_request->scmd;
7994 WARN_ON(scmd != NULL); /* IO command from SML */
7995 WARN_ON(scmd == NULL); /* Non-IO cmd or driver initiated*/
7996 }
7997}
7998
d91d7820 7999static void pqi_shutdown(struct pci_dev *pci_dev)
6c223761
KB		 8000{
8001 int rc;
8002 struct pqi_ctrl_info *ctrl_info;
8003
d91d7820 8004 ctrl_info = pci_get_drvdata(pci_dev);
0530736e
KB		 8005 if (!ctrl_info) {
8006 dev_err(&pci_dev->dev,
8007 "cache could not be flushed\n");
8008 return;
8009 }
8010
8011 pqi_disable_events(ctrl_info);
8012 pqi_wait_until_ofa_finished(ctrl_info);
8013 pqi_cancel_update_time_worker(ctrl_info);
8014 pqi_cancel_rescan_worker(ctrl_info);
8015 pqi_cancel_event_worker(ctrl_info);
8016
8017 pqi_ctrl_shutdown_start(ctrl_info);
8018 pqi_ctrl_wait_until_quiesced(ctrl_info);
8019
8020 rc = pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT);
8021 if (rc) {
8022 dev_err(&pci_dev->dev,
8023 "wait for pending I/O failed\n");
8024 return;
8025 }
8026
8027 pqi_ctrl_block_device_reset(ctrl_info);
8028 pqi_wait_until_lun_reset_finished(ctrl_info);
6c223761
KB		 8029
8030 /*
8031 * Write all data in the controller's battery-backed cache to
8032 * storage.
8033 */
58322fe0 8034 rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
0530736e
KB		 8035 if (rc)
8036 dev_err(&pci_dev->dev,
8037 "unable to flush controller cache\n");
8038
8039 pqi_ctrl_block_requests(ctrl_info);
8040
8041 rc = pqi_ctrl_wait_for_pending_sync_cmds(ctrl_info);
8042 if (rc) {
8043 dev_err(&pci_dev->dev,
8044 "wait for pending sync cmds failed\n");
6c223761 8045 return;
0530736e
KB		 8046 }
8047
8048 pqi_crash_if_pending_command(ctrl_info);
8049 pqi_reset(ctrl_info);
6c223761
KB		 8050}
8051
3c50976f
KB		 8052static void pqi_process_lockup_action_param(void)
8053{
8054 unsigned int i;
8055
8056 if (!pqi_lockup_action_param)
8057 return;
8058
8059 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
8060 if (strcmp(pqi_lockup_action_param,
8061 pqi_lockup_actions[i].name) == 0) {
8062 pqi_lockup_action = pqi_lockup_actions[i].action;
8063 return;
8064 }
8065 }
8066
8067 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
8068 DRIVER_NAME_SHORT, pqi_lockup_action_param);
8069}
8070
8071static void pqi_process_module_params(void)
8072{
8073 pqi_process_lockup_action_param();
8074}
8075
5c146686 8076static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
061ef06a
KB		 8077{
8078 struct pqi_ctrl_info *ctrl_info;
8079
8080 ctrl_info = pci_get_drvdata(pci_dev);
8081
8082 pqi_disable_events(ctrl_info);
8083 pqi_cancel_update_time_worker(ctrl_info);
8084 pqi_cancel_rescan_worker(ctrl_info);
8085 pqi_wait_until_scan_finished(ctrl_info);
8086 pqi_wait_until_lun_reset_finished(ctrl_info);
4fd22c13 8087 pqi_wait_until_ofa_finished(ctrl_info);
58322fe0 8088 pqi_flush_cache(ctrl_info, SUSPEND);
061ef06a
KB		 8089 pqi_ctrl_block_requests(ctrl_info);
8090 pqi_ctrl_wait_until_quiesced(ctrl_info);
8091 pqi_wait_until_inbound_queues_empty(ctrl_info);
4fd22c13 8092 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT);
061ef06a
KB		 8093 pqi_stop_heartbeat_timer(ctrl_info);
8094
8095 if (state.event == PM_EVENT_FREEZE)
8096 return 0;
8097
8098 pci_save_state(pci_dev);
8099 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
8100
8101 ctrl_info->controller_online = false;
8102 ctrl_info->pqi_mode_enabled = false;
8103
8104 return 0;
8105}
8106
5c146686 8107static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
061ef06a
KB		 8108{
8109 int rc;
8110 struct pqi_ctrl_info *ctrl_info;
8111
8112 ctrl_info = pci_get_drvdata(pci_dev);
8113
8114 if (pci_dev->current_state != PCI_D0) {
8115 ctrl_info->max_hw_queue_index = 0;
8116 pqi_free_interrupts(ctrl_info);
8117 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
8118 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
8119 IRQF_SHARED, DRIVER_NAME_SHORT,
8120 &ctrl_info->queue_groups[0]);
8121 if (rc) {
8122 dev_err(&ctrl_info->pci_dev->dev,
8123 "irq %u init failed with error %d\n",
8124 pci_dev->irq, rc);
8125 return rc;
8126 }
8127 pqi_start_heartbeat_timer(ctrl_info);
8128 pqi_ctrl_unblock_requests(ctrl_info);
8129 return 0;
8130 }
8131
8132 pci_set_power_state(pci_dev, PCI_D0);
8133 pci_restore_state(pci_dev);
8134
8135 return pqi_ctrl_init_resume(ctrl_info);
8136}
8137
6c223761
KB		 8138/* Define the PCI IDs for the controllers that we support. */
8139static const struct pci_device_id pqi_pci_id_table[] = {
b0f9408b
KB		 8140 {
8141 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8142 0x105b, 0x1211)
8143 },
8144 {
8145 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8146 0x105b, 0x1321)
8147 },
7eddabff
KB		 8148 {
8149 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8150 0x152d, 0x8a22)
8151 },
8152 {
8153 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8154 0x152d, 0x8a23)
8155 },
8156 {
8157 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8158 0x152d, 0x8a24)
8159 },
8160 {
8161 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8162 0x152d, 0x8a36)
8163 },
8164 {
8165 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8166 0x152d, 0x8a37)
8167 },
0595a0b4
AK		 8168 {
8169 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8170 0x193d, 0x1104)
8171 },
8172 {
8173 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8174 0x193d, 0x1105)
8175 },
8176 {
8177 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8178 0x193d, 0x1106)
8179 },
8180 {
8181 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8182 0x193d, 0x1107)
8183 },
b0f9408b
KB		 8184 {
8185 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8186 0x193d, 0x8460)
8187 },
8188 {
8189 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8190 0x193d, 0x8461)
8191 },
84a77fef
MB		 8192 {
8193 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8194 0x193d, 0xc460)
8195 },
8196 {
8197 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8198 0x193d, 0xc461)
8199 },
b0f9408b
KB		 8200 {
8201 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8202 0x193d, 0xf460)
8203 },
8204 {
8205 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8206 0x193d, 0xf461)
8207 },
8208 {
8209 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8210 0x1bd4, 0x0045)
8211 },
8212 {
8213 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8214 0x1bd4, 0x0046)
8215 },
8216 {
8217 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8218 0x1bd4, 0x0047)
8219 },
8220 {
8221 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8222 0x1bd4, 0x0048)
8223 },
9f8d05fa
KB		 8224 {
8225 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8226 0x1bd4, 0x004a)
8227 },
8228 {
8229 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8230 0x1bd4, 0x004b)
8231 },
8232 {
8233 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8234 0x1bd4, 0x004c)
8235 },
63a7956a
GW		 8236 {
8237 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8238 0x1bd4, 0x004f)
8239 },
c1b10475
AK		 8240 {
8241 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8242 0x19e5, 0xd227)
8243 },
8244 {
8245 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8246 0x19e5, 0xd228)
8247 },
8248 {
8249 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8250 0x19e5, 0xd229)
8251 },
8252 {
8253 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8254 0x19e5, 0xd22a)
8255 },
8256 {
8257 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8258 0x19e5, 0xd22b)
8259 },
8260 {
8261 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8262 0x19e5, 0xd22c)
8263 },
6c223761
KB		 8264 {
8265 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8266 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
8267 },
8268 {
8269 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 8270 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
6c223761
KB		 8271 },
8272 {
8273 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8274 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
6c223761
KB		 8275 },
8276 {
8277 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8278 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
6c223761
KB		 8279 },
8280 {
8281 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8282 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
6c223761
KB		 8283 },
8284 {
8285 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8286 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
6c223761
KB		 8287 },
8288 {
8289 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8290 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
6c223761
KB		 8291 },
8292 {
8293 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8294 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
6c223761
KB		 8295 },
8296 {
8297 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8298 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
6c223761 8299 },
55790064
KB		 8300 {
8301 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8302 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
8303 },
63a7956a
GW		 8304 {
8305 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8306 PCI_VENDOR_ID_ADAPTEC2, 0x0808)
8307 },
8308 {
8309 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8310 PCI_VENDOR_ID_ADAPTEC2, 0x0809)
8311 },
3af06083
MR		 8312 {
8313 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8314 PCI_VENDOR_ID_ADAPTEC2, 0x080a)
8315 },
6c223761
KB		 8316 {
8317 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8318 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
6c223761
KB		 8319 },
8320 {
8321 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8322 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
6c223761
KB		 8323 },
8324 {
8325 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8326 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
6c223761
KB		 8327 },
8328 {
8329 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8330 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
6c223761
KB		 8331 },
8332 {
8333 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8334 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
6c223761
KB		 8335 },
8336 {
8337 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8338 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
6c223761
KB		 8339 },
8340 {
8341 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8342 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
6c223761
KB		 8343 },
8344 {
8345 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8346 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
6c223761
KB		 8347 },
8348 {
8349 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8350 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
6c223761 8351 },
55790064
KB		 8352 {
8353 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8354 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
8355 },
6c223761
KB		 8356 {
8357 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8358 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
6c223761
KB		 8359 },
8360 {
8361 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8362 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
6c223761
KB		 8363 },
8364 {
8365 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8366 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
6c223761
KB		 8367 },
8368 {
8369 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8370 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
6c223761
KB		 8371 },
8372 {
8373 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8374 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
6c223761 8375 },
b0f9408b
KB		 8376 {
8377 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8378 PCI_VENDOR_ID_ADAPTEC2, 0x1282)
8379 },
6c223761
KB		 8380 {
8381 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8382 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
6c223761
KB		 8383 },
8384 {
8385 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8386 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
6c223761 8387 },
bd809e8d
KB		 8388 {
8389 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8390 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
8391 },
8392 {
8393 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8394 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
8395 },
6c223761
KB		 8396 {
8397 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff
KB		 8398 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
8399 },
9f8d05fa
KB		 8400 {
8401 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8402 PCI_VENDOR_ID_ADVANTECH, 0x8312)
8403 },
55790064
KB		 8404 {
8405 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8406 PCI_VENDOR_ID_DELL, 0x1fe0)
8407 },
7eddabff
KB		 8408 {
8409 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8410 PCI_VENDOR_ID_HP, 0x0600)
8411 },
8412 {
8413 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8414 PCI_VENDOR_ID_HP, 0x0601)
8415 },
8416 {
8417 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8418 PCI_VENDOR_ID_HP, 0x0602)
8419 },
8420 {
8421 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8422 PCI_VENDOR_ID_HP, 0x0603)
8423 },
8424 {
8425 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 8426 PCI_VENDOR_ID_HP, 0x0609)
7eddabff
KB		 8427 },
8428 {
8429 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8430 PCI_VENDOR_ID_HP, 0x0650)
8431 },
8432 {
8433 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8434 PCI_VENDOR_ID_HP, 0x0651)
8435 },
8436 {
8437 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8438 PCI_VENDOR_ID_HP, 0x0652)
8439 },
8440 {
8441 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8442 PCI_VENDOR_ID_HP, 0x0653)
8443 },
8444 {
8445 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8446 PCI_VENDOR_ID_HP, 0x0654)
8447 },
8448 {
8449 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8450 PCI_VENDOR_ID_HP, 0x0655)
8451 },
7eddabff
KB		 8452 {
8453 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8454 PCI_VENDOR_ID_HP, 0x0700)
8455 },
8456 {
8457 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8458 PCI_VENDOR_ID_HP, 0x0701)
6c223761
KB		 8459 },
8460 {
8461 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8462 PCI_VENDOR_ID_HP, 0x1001)
8463 },
8464 {
8465 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8466 PCI_VENDOR_ID_HP, 0x1100)
8467 },
8468 {
8469 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8470 PCI_VENDOR_ID_HP, 0x1101)
8471 },
8bdb3b9c
GW		 8472 {
8473 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8474 0x1d8d, 0x0800)
8475 },
8476 {
8477 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8478 0x1d8d, 0x0908)
8479 },
8480 {
8481 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8482 0x1d8d, 0x0806)
8483 },
8484 {
8485 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8486 0x1d8d, 0x0916)
8487 },
71ecc60d
GW		 8488 {
8489 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8490 PCI_VENDOR_ID_GIGABYTE, 0x1000)
8491 },
6c223761
KB		 8492 {
8493 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8494 PCI_ANY_ID, PCI_ANY_ID)
8495 },
8496 { 0 }
8497};
8498
8499MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
8500
8501static struct pci_driver pqi_pci_driver = {
8502 .name = DRIVER_NAME_SHORT,
8503 .id_table = pqi_pci_id_table,
8504 .probe = pqi_pci_probe,
8505 .remove = pqi_pci_remove,
8506 .shutdown = pqi_shutdown,
061ef06a
KB		 8507#if defined(CONFIG_PM)
8508 .suspend = pqi_suspend,
8509 .resume = pqi_resume,
8510#endif
6c223761
KB		 8511};
8512
8513static int __init pqi_init(void)
8514{
8515 int rc;
8516
8517 pr_info(DRIVER_NAME "\n");
8518
8519 pqi_sas_transport_template =
8520 sas_attach_transport(&pqi_sas_transport_functions);
8521 if (!pqi_sas_transport_template)
8522 return -ENODEV;
8523
3c50976f
KB		 8524 pqi_process_module_params();
8525
6c223761
KB		 8526 rc = pci_register_driver(&pqi_pci_driver);
8527 if (rc)
8528 sas_release_transport(pqi_sas_transport_template);
8529
8530 return rc;
8531}
8532
8533static void __exit pqi_cleanup(void)
8534{
8535 pci_unregister_driver(&pqi_pci_driver);
8536 sas_release_transport(pqi_sas_transport_template);
8537}
8538
8539module_init(pqi_init);
8540module_exit(pqi_cleanup);
8541
8542static void __attribute__((unused)) verify_structures(void)
8543{
8544 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8545 sis_host_to_ctrl_doorbell) != 0x20);
8546 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8547 sis_interrupt_mask) != 0x34);
8548 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8549 sis_ctrl_to_host_doorbell) != 0x9c);
8550 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8551 sis_ctrl_to_host_doorbell_clear) != 0xa0);
ff6abb73
KB		 8552 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8553 sis_driver_scratch) != 0xb0);
6c223761
KB		 8554 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8555 sis_firmware_status) != 0xbc);
8556 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8557 sis_mailbox) != 0x1000);
8558 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8559 pqi_registers) != 0x4000);
8560
8561 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8562 iu_type) != 0x0);
8563 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8564 iu_length) != 0x2);
8565 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8566 response_queue_id) != 0x4);
8567 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8568 work_area) != 0x6);
8569 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
8570
8571 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8572 status) != 0x0);
8573 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8574 service_response) != 0x1);
8575 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8576 data_present) != 0x2);
8577 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8578 reserved) != 0x3);
8579 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8580 residual_count) != 0x4);
8581 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8582 data_length) != 0x8);
8583 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8584 reserved1) != 0xa);
8585 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8586 data) != 0xc);
8587 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
8588
8589 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8590 data_in_result) != 0x0);
8591 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8592 data_out_result) != 0x1);
8593 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8594 reserved) != 0x2);
8595 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8596 status) != 0x5);
8597 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8598 status_qualifier) != 0x6);
8599 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8600 sense_data_length) != 0x8);
8601 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8602 response_data_length) != 0xa);
8603 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8604 data_in_transferred) != 0xc);
8605 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8606 data_out_transferred) != 0x10);
8607 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8608 data) != 0x14);
8609 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
8610
8611 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8612 signature) != 0x0);
8613 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8614 function_and_status_code) != 0x8);
8615 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8616 max_admin_iq_elements) != 0x10);
8617 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8618 max_admin_oq_elements) != 0x11);
8619 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8620 admin_iq_element_length) != 0x12);
8621 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8622 admin_oq_element_length) != 0x13);
8623 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8624 max_reset_timeout) != 0x14);
8625 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8626 legacy_intx_status) != 0x18);
8627 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8628 legacy_intx_mask_set) != 0x1c);
8629 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8630 legacy_intx_mask_clear) != 0x20);
8631 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8632 device_status) != 0x40);
8633 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8634 admin_iq_pi_offset) != 0x48);
8635 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8636 admin_oq_ci_offset) != 0x50);
8637 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8638 admin_iq_element_array_addr) != 0x58);
8639 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8640 admin_oq_element_array_addr) != 0x60);
8641 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8642 admin_iq_ci_addr) != 0x68);
8643 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8644 admin_oq_pi_addr) != 0x70);
8645 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8646 admin_iq_num_elements) != 0x78);
8647 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8648 admin_oq_num_elements) != 0x79);
8649 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8650 admin_queue_int_msg_num) != 0x7a);
8651 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8652 device_error) != 0x80);
8653 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8654 error_details) != 0x88);
8655 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8656 device_reset) != 0x90);
8657 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8658 power_action) != 0x94);
8659 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
8660
8661 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8662 header.iu_type) != 0);
8663 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8664 header.iu_length) != 2);
8665 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8666 header.work_area) != 6);
8667 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8668 request_id) != 8);
8669 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8670 function_code) != 10);
8671 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8672 data.report_device_capability.buffer_length) != 44);
8673 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8674 data.report_device_capability.sg_descriptor) != 48);
8675 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8676 data.create_operational_iq.queue_id) != 12);
8677 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8678 data.create_operational_iq.element_array_addr) != 16);
8679 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8680 data.create_operational_iq.ci_addr) != 24);
8681 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8682 data.create_operational_iq.num_elements) != 32);
8683 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8684 data.create_operational_iq.element_length) != 34);
8685 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8686 data.create_operational_iq.queue_protocol) != 36);
8687 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8688 data.create_operational_oq.queue_id) != 12);
8689 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8690 data.create_operational_oq.element_array_addr) != 16);
8691 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8692 data.create_operational_oq.pi_addr) != 24);
8693 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8694 data.create_operational_oq.num_elements) != 32);
8695 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8696 data.create_operational_oq.element_length) != 34);
8697 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8698 data.create_operational_oq.queue_protocol) != 36);
8699 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8700 data.create_operational_oq.int_msg_num) != 40);
8701 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8702 data.create_operational_oq.coalescing_count) != 42);
8703 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8704 data.create_operational_oq.min_coalescing_time) != 44);
8705 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8706 data.create_operational_oq.max_coalescing_time) != 48);
8707 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8708 data.delete_operational_queue.queue_id) != 12);
8709 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
c593642c 8710 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761 8711 data.create_operational_iq) != 64 - 11);
c593642c 8712 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761 8713 data.create_operational_oq) != 64 - 11);
c593642c 8714 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761
KB		 8715 data.delete_operational_queue) != 64 - 11);
8716
8717 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8718 header.iu_type) != 0);
8719 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8720 header.iu_length) != 2);
8721 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8722 header.work_area) != 6);
8723 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8724 request_id) != 8);
8725 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8726 function_code) != 10);
8727 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8728 status) != 11);
8729 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8730 data.create_operational_iq.status_descriptor) != 12);
8731 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8732 data.create_operational_iq.iq_pi_offset) != 16);
8733 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8734 data.create_operational_oq.status_descriptor) != 12);
8735 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8736 data.create_operational_oq.oq_ci_offset) != 16);
8737 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
8738
8739 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8740 header.iu_type) != 0);
8741 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8742 header.iu_length) != 2);
8743 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8744 header.response_queue_id) != 4);
8745 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8746 header.work_area) != 6);
8747 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8748 request_id) != 8);
8749 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8750 nexus_id) != 10);
8751 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8752 buffer_length) != 12);
8753 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8754 lun_number) != 16);
8755 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8756 protocol_specific) != 24);
8757 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8758 error_index) != 27);
8759 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8760 cdb) != 32);
21432010 8761 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8762 timeout) != 60);
6c223761
KB		 8763 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8764 sg_descriptors) != 64);
8765 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
8766 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
8767
8768 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8769 header.iu_type) != 0);
8770 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8771 header.iu_length) != 2);
8772 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8773 header.response_queue_id) != 4);
8774 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8775 header.work_area) != 6);
8776 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8777 request_id) != 8);
8778 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8779 nexus_id) != 12);
8780 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8781 buffer_length) != 16);
8782 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8783 data_encryption_key_index) != 22);
8784 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8785 encrypt_tweak_lower) != 24);
8786 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8787 encrypt_tweak_upper) != 28);
8788 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8789 cdb) != 32);
8790 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8791 error_index) != 48);
8792 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8793 num_sg_descriptors) != 50);
8794 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8795 cdb_length) != 51);
8796 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8797 lun_number) != 52);
8798 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8799 sg_descriptors) != 64);
8800 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
8801 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
8802
8803 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8804 header.iu_type) != 0);
8805 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8806 header.iu_length) != 2);
8807 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8808 request_id) != 8);
8809 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8810 error_index) != 10);
8811
8812 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8813 header.iu_type) != 0);
8814 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8815 header.iu_length) != 2);
8816 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8817 header.response_queue_id) != 4);
8818 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8819 request_id) != 8);
8820 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8821 data.report_event_configuration.buffer_length) != 12);
8822 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8823 data.report_event_configuration.sg_descriptors) != 16);
8824 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8825 data.set_event_configuration.global_event_oq_id) != 10);
8826 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8827 data.set_event_configuration.buffer_length) != 12);
8828 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8829 data.set_event_configuration.sg_descriptors) != 16);
8830
8831 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
8832 max_inbound_iu_length) != 6);
8833 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
8834 max_outbound_iu_length) != 14);
8835 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
8836
8837 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8838 data_length) != 0);
8839 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8840 iq_arbitration_priority_support_bitmask) != 8);
8841 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8842 maximum_aw_a) != 9);
8843 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8844 maximum_aw_b) != 10);
8845 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8846 maximum_aw_c) != 11);
8847 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8848 max_inbound_queues) != 16);
8849 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8850 max_elements_per_iq) != 18);
8851 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8852 max_iq_element_length) != 24);
8853 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8854 min_iq_element_length) != 26);
8855 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8856 max_outbound_queues) != 30);
8857 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8858 max_elements_per_oq) != 32);
8859 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8860 intr_coalescing_time_granularity) != 34);
8861 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8862 max_oq_element_length) != 36);
8863 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8864 min_oq_element_length) != 38);
8865 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8866 iu_layer_descriptors) != 64);
8867 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
8868
8869 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
8870 event_type) != 0);
8871 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
8872 oq_id) != 2);
8873 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
8874
8875 BUILD_BUG_ON(offsetof(struct pqi_event_config,
8876 num_event_descriptors) != 2);
8877 BUILD_BUG_ON(offsetof(struct pqi_event_config,
8878 descriptors) != 4);
8879
061ef06a
KB		 8880 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
8881 ARRAY_SIZE(pqi_supported_event_types));
8882
6c223761
KB		 8883 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8884 header.iu_type) != 0);
8885 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8886 header.iu_length) != 2);
8887 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8888 event_type) != 8);
8889 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8890 event_id) != 10);
8891 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8892 additional_event_id) != 12);
8893 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8894 data) != 16);
8895 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
8896
8897 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8898 header.iu_type) != 0);
8899 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8900 header.iu_length) != 2);
8901 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8902 event_type) != 8);
8903 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8904 event_id) != 10);
8905 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8906 additional_event_id) != 12);
8907 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
8908
8909 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8910 header.iu_type) != 0);
8911 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8912 header.iu_length) != 2);
8913 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8914 request_id) != 8);
8915 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8916 nexus_id) != 10);
8917 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
c2922f17
MB		 8918 timeout) != 14);
8919 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
6c223761
KB		 8920 lun_number) != 16);
8921 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8922 protocol_specific) != 24);
8923 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8924 outbound_queue_id_to_manage) != 26);
8925 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8926 request_id_to_manage) != 28);
8927 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8928 task_management_function) != 30);
8929 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
8930
8931 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8932 header.iu_type) != 0);
8933 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8934 header.iu_length) != 2);
8935 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8936 request_id) != 8);
8937 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8938 nexus_id) != 10);
8939 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8940 additional_response_info) != 12);
8941 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8942 response_code) != 15);
8943 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
8944
8945 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8946 configured_logical_drive_count) != 0);
8947 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8948 configuration_signature) != 1);
8949 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8950 firmware_version) != 5);
8951 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8952 extended_logical_unit_count) != 154);
8953 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8954 firmware_build_number) != 190);
8955 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8956 controller_mode) != 292);
8957
1be42f46
KB		 8958 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8959 phys_bay_in_box) != 115);
8960 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8961 device_type) != 120);
8962 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8963 redundant_path_present_map) != 1736);
8964 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8965 active_path_number) != 1738);
8966 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8967 alternate_paths_phys_connector) != 1739);
8968 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8969 alternate_paths_phys_box_on_port) != 1755);
8970 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8971 current_queue_depth_limit) != 1796);
8972 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
8973
6c223761
KB		 8974 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
8975 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
8976 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
8977 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8978 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
8979 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8980 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
8981 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
8982 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8983 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
8984 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
8985 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8986
8987 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
d727a776
KB		 8988 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
8989 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
6c223761 8990}
Linux 6.x block layer and io_uring tree(s)