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scsi: smartpqi: Disable WRITE SAME for HBA NVMe disks
[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
2a712681 4 * Copyright (c) 2019-2020 Microchip Technology Inc. and its subsidiaries
2f4c4b92 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
5443bdc4 36#define DRIVER_VERSION "1.2.16-012"
2d154f5f 37#define DRIVER_MAJOR 1
f7cb8ac6 38#define DRIVER_MINOR 2
ce60a2b8 39#define DRIVER_RELEASE 16
5443bdc4 40#define DRIVER_REVISION 12
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);
7a012c23
DB		 70static int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
71 struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
72 struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
73 struct pqi_scsi_dev_raid_map_data *rmd);
6702d2c4
DB		 74static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
75 struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
76 struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
77 struct pqi_scsi_dev_raid_map_data *rmd);
4fd22c13
MR		 78static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info);
79static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info);
80static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info);
81static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
82 u32 bytes_requested);
83static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info);
84static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info);
1e46731e
MR		 85static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
86 struct pqi_scsi_dev *device, unsigned long timeout_secs);
6c223761
KB		 87
88/* for flags argument to pqi_submit_raid_request_synchronous() */
89#define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
90
91static struct scsi_transport_template *pqi_sas_transport_template;
92
93static atomic_t pqi_controller_count = ATOMIC_INIT(0);
94
3c50976f
KB		 95enum pqi_lockup_action {
96 NONE,
97 REBOOT,
98 PANIC
99};
100
101static enum pqi_lockup_action pqi_lockup_action = NONE;
102
103static struct {
104 enum pqi_lockup_action action;
105 char *name;
106} pqi_lockup_actions[] = {
107 {
108 .action = NONE,
109 .name = "none",
110 },
111 {
112 .action = REBOOT,
113 .name = "reboot",
114 },
115 {
116 .action = PANIC,
117 .name = "panic",
118 },
119};
120
6a50d6ad
KB		 121static unsigned int pqi_supported_event_types[] = {
122 PQI_EVENT_TYPE_HOTPLUG,
123 PQI_EVENT_TYPE_HARDWARE,
124 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
125 PQI_EVENT_TYPE_LOGICAL_DEVICE,
4fd22c13 126 PQI_EVENT_TYPE_OFA,
6a50d6ad
KB		 127 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
128 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
129};
130
6c223761
KB		 131static int pqi_disable_device_id_wildcards;
132module_param_named(disable_device_id_wildcards,
cbe0c7b1 133 pqi_disable_device_id_wildcards, int, 0644);
6c223761
KB		 134MODULE_PARM_DESC(disable_device_id_wildcards,
135 "Disable device ID wildcards.");
136
5a259e32
KB		 137static int pqi_disable_heartbeat;
138module_param_named(disable_heartbeat,
139 pqi_disable_heartbeat, int, 0644);
140MODULE_PARM_DESC(disable_heartbeat,
141 "Disable heartbeat.");
142
143static int pqi_disable_ctrl_shutdown;
144module_param_named(disable_ctrl_shutdown,
145 pqi_disable_ctrl_shutdown, int, 0644);
146MODULE_PARM_DESC(disable_ctrl_shutdown,
147 "Disable controller shutdown when controller locked up.");
148
3c50976f
KB		 149static char *pqi_lockup_action_param;
150module_param_named(lockup_action,
151 pqi_lockup_action_param, charp, 0644);
152MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
153 "\t\tSupported: none, reboot, panic\n"
154 "\t\tDefault: none");
155
5e6a9760
GW		 156static int pqi_expose_ld_first;
157module_param_named(expose_ld_first,
158 pqi_expose_ld_first, int, 0644);
583891c9 159MODULE_PARM_DESC(expose_ld_first, "Expose logical drives before physical drives.");
5e6a9760 160
522bc026
DC		 161static int pqi_hide_vsep;
162module_param_named(hide_vsep,
163 pqi_hide_vsep, int, 0644);
583891c9 164MODULE_PARM_DESC(hide_vsep, "Hide the virtual SEP for direct attached drives.");
522bc026 165
6c223761
KB		 166static char *raid_levels[] = {
167 "RAID-0",
168 "RAID-4",
169 "RAID-1(1+0)",
170 "RAID-5",
171 "RAID-5+1",
7a012c23
DB		 172 "RAID-6",
173 "RAID-1(Triple)",
6c223761
KB		 174};
175
176static char *pqi_raid_level_to_string(u8 raid_level)
177{
178 if (raid_level < ARRAY_SIZE(raid_levels))
179 return raid_levels[raid_level];
180
a9f93392 181 return "RAID UNKNOWN";
6c223761
KB		 182}
183
184#define SA_RAID_0 0
185#define SA_RAID_4 1
186#define SA_RAID_1 2 /* also used for RAID 10 */
187#define SA_RAID_5 3 /* also used for RAID 50 */
188#define SA_RAID_51 4
189#define SA_RAID_6 5 /* also used for RAID 60 */
7a012c23
DB		 190#define SA_RAID_TRIPLE 6 /* also used for RAID 1+0 Triple */
191#define SA_RAID_MAX SA_RAID_TRIPLE
6c223761
KB		 192#define SA_RAID_UNKNOWN 0xff
193
194static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
195{
7561a7e4 196 pqi_prep_for_scsi_done(scmd);
6c223761
KB		 197 scmd->scsi_done(scmd);
198}
199
b6e2ef67 200static inline void pqi_disable_write_same(struct scsi_device *sdev)
6c223761 201{
b6e2ef67 202 sdev->no_write_same = 1;
6c223761
KB		 203}
204
6c223761 205static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
6c223761 206{
6c223761 207 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
6c223761
KB		 208}
209
210static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
211{
212 return !device->is_physical_device;
213}
214
bd10cf0b
KB		 215static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
216{
217 return scsi3addr[2] != 0;
218}
219
694c5d5b
KB		 220static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
221{
222 return !ctrl_info->controller_online;
223}
224
6c223761
KB		 225static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
226{
227 if (ctrl_info->controller_online)
228 if (!sis_is_firmware_running(ctrl_info))
229 pqi_take_ctrl_offline(ctrl_info);
230}
231
232static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
233{
234 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
235}
236
583891c9 237static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(struct pqi_ctrl_info *ctrl_info)
ff6abb73
KB		 238{
239 return sis_read_driver_scratch(ctrl_info);
240}
241
242static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
243 enum pqi_ctrl_mode mode)
244{
245 sis_write_driver_scratch(ctrl_info, mode);
246}
247
694c5d5b
KB		 248static inline void pqi_ctrl_block_device_reset(struct pqi_ctrl_info *ctrl_info)
249{
250 ctrl_info->block_device_reset = true;
251}
252
253static inline bool pqi_device_reset_blocked(struct pqi_ctrl_info *ctrl_info)
254{
255 return ctrl_info->block_device_reset;
256}
257
258static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
259{
260 return ctrl_info->block_requests;
261}
262
7561a7e4
KB		 263static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
264{
265 ctrl_info->block_requests = true;
266 scsi_block_requests(ctrl_info->scsi_host);
267}
268
269static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
270{
271 ctrl_info->block_requests = false;
272 wake_up_all(&ctrl_info->block_requests_wait);
376fb880 273 pqi_retry_raid_bypass_requests(ctrl_info);
7561a7e4
KB		 274 scsi_unblock_requests(ctrl_info->scsi_host);
275}
276
7561a7e4
KB		 277static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
278 unsigned long timeout_msecs)
279{
280 unsigned long remaining_msecs;
281
282 if (!pqi_ctrl_blocked(ctrl_info))
283 return timeout_msecs;
284
285 atomic_inc(&ctrl_info->num_blocked_threads);
286
287 if (timeout_msecs == NO_TIMEOUT) {
288 wait_event(ctrl_info->block_requests_wait,
289 !pqi_ctrl_blocked(ctrl_info));
290 remaining_msecs = timeout_msecs;
291 } else {
292 unsigned long remaining_jiffies;
293
294 remaining_jiffies =
295 wait_event_timeout(ctrl_info->block_requests_wait,
296 !pqi_ctrl_blocked(ctrl_info),
297 msecs_to_jiffies(timeout_msecs));
298 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
299 }
300
301 atomic_dec(&ctrl_info->num_blocked_threads);
302
303 return remaining_msecs;
304}
305
7561a7e4
KB		 306static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
307{
308 while (atomic_read(&ctrl_info->num_busy_threads) >
309 atomic_read(&ctrl_info->num_blocked_threads))
310 usleep_range(1000, 2000);
311}
312
03b288cf
KB		 313static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
314{
315 return device->device_offline;
316}
317
7561a7e4
KB		 318static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
319{
320 device->in_reset = true;
321}
322
323static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
324{
325 device->in_reset = false;
326}
327
328static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
329{
330 return device->in_reset;
331}
6c223761 332
4fd22c13
MR		 333static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info)
334{
335 ctrl_info->in_ofa = true;
336}
337
338static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info)
339{
340 ctrl_info->in_ofa = false;
341}
342
343static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info)
344{
345 return ctrl_info->in_ofa;
346}
347
1e46731e
MR		 348static inline void pqi_device_remove_start(struct pqi_scsi_dev *device)
349{
350 device->in_remove = true;
351}
352
1bdf6e93 353static inline bool pqi_device_in_remove(struct pqi_scsi_dev *device)
1e46731e 354{
1bdf6e93 355 return device->in_remove;
1e46731e
MR		 356}
357
0530736e
KB		 358static inline void pqi_ctrl_shutdown_start(struct pqi_ctrl_info *ctrl_info)
359{
360 ctrl_info->in_shutdown = true;
361}
362
363static inline bool pqi_ctrl_in_shutdown(struct pqi_ctrl_info *ctrl_info)
364{
365 return ctrl_info->in_shutdown;
366}
367
583891c9
KB		 368static inline void pqi_schedule_rescan_worker_with_delay(struct pqi_ctrl_info *ctrl_info,
369 unsigned long delay)
5f310425
KB		 370{
371 if (pqi_ctrl_offline(ctrl_info))
372 return;
4fd22c13
MR		 373 if (pqi_ctrl_in_ofa(ctrl_info))
374 return;
5f310425
KB		 375
376 schedule_delayed_work(&ctrl_info->rescan_work, delay);
377}
378
6c223761
KB		 379static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
380{
5f310425
KB		 381 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
382}
383
4fd22c13 384#define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ)
5f310425 385
583891c9 386static inline void pqi_schedule_rescan_worker_delayed(struct pqi_ctrl_info *ctrl_info)
5f310425
KB		 387{
388 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
6c223761
KB		 389}
390
061ef06a
KB		 391static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
392{
393 cancel_delayed_work_sync(&ctrl_info->rescan_work);
394}
395
0530736e
KB		 396static inline void pqi_cancel_event_worker(struct pqi_ctrl_info *ctrl_info)
397{
398 cancel_work_sync(&ctrl_info->event_work);
399}
400
98f87667
KB		 401static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
402{
403 if (!ctrl_info->heartbeat_counter)
404 return 0;
405
406 return readl(ctrl_info->heartbeat_counter);
407}
408
4fd22c13
MR		 409static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
410{
411 if (!ctrl_info->soft_reset_status)
412 return 0;
413
414 return readb(ctrl_info->soft_reset_status);
415}
416
583891c9 417static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info, u8 clear)
4fd22c13
MR		 418{
419 u8 status;
420
421 if (!ctrl_info->soft_reset_status)
422 return;
423
424 status = pqi_read_soft_reset_status(ctrl_info);
425 status &= ~clear;
426 writeb(status, ctrl_info->soft_reset_status);
427}
428
6c223761
KB		 429static int pqi_map_single(struct pci_dev *pci_dev,
430 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
6917a9cc 431 size_t buffer_length, enum dma_data_direction data_direction)
6c223761
KB		 432{
433 dma_addr_t bus_address;
434
6917a9cc 435 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE)
6c223761
KB		 436 return 0;
437
6917a9cc 438 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length,
6c223761 439 data_direction);
6917a9cc 440 if (dma_mapping_error(&pci_dev->dev, bus_address))
6c223761
KB		 441 return -ENOMEM;
442
443 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
444 put_unaligned_le32(buffer_length, &sg_descriptor->length);
445 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
446
447 return 0;
448}
449
450static void pqi_pci_unmap(struct pci_dev *pci_dev,
451 struct pqi_sg_descriptor *descriptors, int num_descriptors,
6917a9cc 452 enum dma_data_direction data_direction)
6c223761
KB		 453{
454 int i;
455
6917a9cc 456 if (data_direction == DMA_NONE)
6c223761
KB		 457 return;
458
459 for (i = 0; i < num_descriptors; i++)
6917a9cc 460 dma_unmap_single(&pci_dev->dev,
6c223761
KB		 461 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
462 get_unaligned_le32(&descriptors[i].length),
463 data_direction);
464}
465
466static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
467 struct pqi_raid_path_request *request, u8 cmd,
468 u8 *scsi3addr, void *buffer, size_t buffer_length,
6917a9cc 469 u16 vpd_page, enum dma_data_direction *dir)
6c223761
KB		 470{
471 u8 *cdb;
171c2865 472 size_t cdb_length = buffer_length;
6c223761
KB		 473
474 memset(request, 0, sizeof(*request));
475
476 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
477 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
478 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
479 &request->header.iu_length);
480 put_unaligned_le32(buffer_length, &request->buffer_length);
481 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
482 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
483 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
484
485 cdb = request->cdb;
486
487 switch (cmd) {
488 case INQUIRY:
489 request->data_direction = SOP_READ_FLAG;
490 cdb[0] = INQUIRY;
491 if (vpd_page & VPD_PAGE) {
492 cdb[1] = 0x1;
493 cdb[2] = (u8)vpd_page;
494 }
171c2865 495 cdb[4] = (u8)cdb_length;
6c223761
KB		 496 break;
497 case CISS_REPORT_LOG:
498 case CISS_REPORT_PHYS:
499 request->data_direction = SOP_READ_FLAG;
500 cdb[0] = cmd;
501 if (cmd == CISS_REPORT_PHYS)
694c5d5b 502 cdb[1] = CISS_REPORT_PHYS_FLAG_OTHER;
6c223761 503 else
f6cc2a77 504 cdb[1] = ctrl_info->ciss_report_log_flags;
171c2865 505 put_unaligned_be32(cdb_length, &cdb[6]);
6c223761
KB		 506 break;
507 case CISS_GET_RAID_MAP:
508 request->data_direction = SOP_READ_FLAG;
509 cdb[0] = CISS_READ;
510 cdb[1] = CISS_GET_RAID_MAP;
171c2865 511 put_unaligned_be32(cdb_length, &cdb[6]);
6c223761 512 break;
58322fe0 513 case SA_FLUSH_CACHE:
6c223761
KB		 514 request->data_direction = SOP_WRITE_FLAG;
515 cdb[0] = BMIC_WRITE;
58322fe0 516 cdb[6] = BMIC_FLUSH_CACHE;
171c2865 517 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 518 break;
171c2865
DC		 519 case BMIC_SENSE_DIAG_OPTIONS:
520 cdb_length = 0;
df561f66 521 fallthrough;
6c223761
KB		 522 case BMIC_IDENTIFY_CONTROLLER:
523 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6d90615f 524 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
f6cc2a77 525 case BMIC_SENSE_FEATURE:
6c223761
KB		 526 request->data_direction = SOP_READ_FLAG;
527 cdb[0] = BMIC_READ;
528 cdb[6] = cmd;
171c2865 529 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 530 break;
171c2865
DC		 531 case BMIC_SET_DIAG_OPTIONS:
532 cdb_length = 0;
df561f66 533 fallthrough;
6c223761
KB		 534 case BMIC_WRITE_HOST_WELLNESS:
535 request->data_direction = SOP_WRITE_FLAG;
536 cdb[0] = BMIC_WRITE;
537 cdb[6] = cmd;
171c2865 538 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 539 break;
3d46a59a
DB		 540 case BMIC_CSMI_PASSTHRU:
541 request->data_direction = SOP_BIDIRECTIONAL;
542 cdb[0] = BMIC_WRITE;
543 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU;
544 cdb[6] = cmd;
545 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761
KB		 546 break;
547 default:
9e68cccc 548 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n", cmd);
6c223761
KB		 549 break;
550 }
551
552 switch (request->data_direction) {
553 case SOP_READ_FLAG:
6917a9cc 554 *dir = DMA_FROM_DEVICE;
6c223761
KB		 555 break;
556 case SOP_WRITE_FLAG:
6917a9cc 557 *dir = DMA_TO_DEVICE;
6c223761
KB		 558 break;
559 case SOP_NO_DIRECTION_FLAG:
6917a9cc 560 *dir = DMA_NONE;
6c223761
KB		 561 break;
562 default:
6917a9cc 563 *dir = DMA_BIDIRECTIONAL;
6c223761
KB		 564 break;
565 }
566
6c223761 567 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
6917a9cc 568 buffer, buffer_length, *dir);
6c223761
KB		 569}
570
376fb880
KB		 571static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
572{
573 io_request->scmd = NULL;
574 io_request->status = 0;
575 io_request->error_info = NULL;
576 io_request->raid_bypass = false;
577}
578
6c223761
KB		 579static struct pqi_io_request *pqi_alloc_io_request(
580 struct pqi_ctrl_info *ctrl_info)
581{
582 struct pqi_io_request *io_request;
583 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
584
585 while (1) {
586 io_request = &ctrl_info->io_request_pool[i];
587 if (atomic_inc_return(&io_request->refcount) == 1)
588 break;
589 atomic_dec(&io_request->refcount);
590 i = (i + 1) % ctrl_info->max_io_slots;
591 }
592
593 /* benignly racy */
594 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
595
376fb880 596 pqi_reinit_io_request(io_request);
6c223761
KB		 597
598 return io_request;
599}
600
601static void pqi_free_io_request(struct pqi_io_request *io_request)
602{
603 atomic_dec(&io_request->refcount);
604}
605
02133b68 606static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
694c5d5b
KB		 607 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
608 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
6c223761
KB		 609{
610 int rc;
6c223761 611 struct pqi_raid_path_request request;
694c5d5b 612 enum dma_data_direction dir;
6c223761 613
583891c9
KB		 614 rc = pqi_build_raid_path_request(ctrl_info, &request, cmd, scsi3addr,
615 buffer, buffer_length, vpd_page, &dir);
6c223761
KB		 616 if (rc)
617 return rc;
618
694c5d5b
KB		 619 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
620 error_info, timeout_msecs);
6c223761 621
6917a9cc 622 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
694c5d5b 623
6c223761
KB		 624 return rc;
625}
626
694c5d5b 627/* helper functions for pqi_send_scsi_raid_request */
02133b68
DC		 628
629static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
694c5d5b 630 u8 cmd, void *buffer, size_t buffer_length)
6c223761 631{
02133b68 632 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
694c5d5b 633 buffer, buffer_length, 0, NULL, NO_TIMEOUT);
02133b68 634}
6c223761 635
02133b68 636static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
694c5d5b
KB		 637 u8 cmd, void *buffer, size_t buffer_length,
638 struct pqi_raid_error_info *error_info)
02133b68
DC		 639{
640 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
694c5d5b 641 buffer, buffer_length, 0, error_info, NO_TIMEOUT);
02133b68 642}
6c223761 643
02133b68 644static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
694c5d5b 645 struct bmic_identify_controller *buffer)
02133b68
DC		 646{
647 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
694c5d5b 648 buffer, sizeof(*buffer));
02133b68
DC		 649}
650
6d90615f 651static inline int pqi_sense_subsystem_info(struct pqi_ctrl_info *ctrl_info,
694c5d5b 652 struct bmic_sense_subsystem_info *sense_info)
6d90615f
MB		 653{
654 return pqi_send_ctrl_raid_request(ctrl_info,
694c5d5b
KB		 655 BMIC_SENSE_SUBSYSTEM_INFORMATION, sense_info,
656 sizeof(*sense_info));
6d90615f
MB		 657}
658
02133b68 659static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
6c223761 660 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
02133b68
DC		 661{
662 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
663 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT);
6c223761
KB		 664}
665
666static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
667 struct pqi_scsi_dev *device,
694c5d5b 668 struct bmic_identify_physical_device *buffer, size_t buffer_length)
6c223761
KB		 669{
670 int rc;
6917a9cc 671 enum dma_data_direction dir;
6c223761
KB		 672 u16 bmic_device_index;
673 struct pqi_raid_path_request request;
674
675 rc = pqi_build_raid_path_request(ctrl_info, &request,
676 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
6917a9cc 677 buffer_length, 0, &dir);
6c223761
KB		 678 if (rc)
679 return rc;
680
681 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
682 request.cdb[2] = (u8)bmic_device_index;
683 request.cdb[9] = (u8)(bmic_device_index >> 8);
684
685 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
686 0, NULL, NO_TIMEOUT);
687
6917a9cc 688 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
694c5d5b 689
6c223761
KB		 690 return rc;
691}
692
f6cc2a77
KB		 693static inline u32 pqi_aio_limit_to_bytes(__le16 *limit)
694{
695 u32 bytes;
696
697 bytes = get_unaligned_le16(limit);
698 if (bytes == 0)
699 bytes = ~0;
700 else
701 bytes *= 1024;
702
703 return bytes;
704}
705
706#pragma pack(1)
707
708struct bmic_sense_feature_buffer {
709 struct bmic_sense_feature_buffer_header header;
710 struct bmic_sense_feature_io_page_aio_subpage aio_subpage;
711};
712
713#pragma pack()
714
715#define MINIMUM_AIO_SUBPAGE_BUFFER_LENGTH \
716 offsetofend(struct bmic_sense_feature_buffer, \
717 aio_subpage.max_write_raid_1_10_3drive)
718
719#define MINIMUM_AIO_SUBPAGE_LENGTH \
720 (offsetofend(struct bmic_sense_feature_io_page_aio_subpage, \
721 max_write_raid_1_10_3drive) - \
722 sizeof_field(struct bmic_sense_feature_io_page_aio_subpage, header))
723
724static int pqi_get_advanced_raid_bypass_config(struct pqi_ctrl_info *ctrl_info)
725{
726 int rc;
727 enum dma_data_direction dir;
728 struct pqi_raid_path_request request;
729 struct bmic_sense_feature_buffer *buffer;
730
731 buffer = kmalloc(sizeof(*buffer), GFP_KERNEL);
732 if (!buffer)
733 return -ENOMEM;
734
583891c9
KB		 735 rc = pqi_build_raid_path_request(ctrl_info, &request, BMIC_SENSE_FEATURE, RAID_CTLR_LUNID,
736 buffer, sizeof(*buffer), 0, &dir);
f6cc2a77
KB		 737 if (rc)
738 goto error;
739
740 request.cdb[2] = BMIC_SENSE_FEATURE_IO_PAGE;
741 request.cdb[3] = BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE;
742
583891c9 743 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL, NO_TIMEOUT);
f6cc2a77
KB		 744
745 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
746
747 if (rc)
748 goto error;
749
750 if (buffer->header.page_code != BMIC_SENSE_FEATURE_IO_PAGE ||
751 buffer->header.subpage_code !=
752 BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE ||
753 get_unaligned_le16(&buffer->header.buffer_length) <
754 MINIMUM_AIO_SUBPAGE_BUFFER_LENGTH ||
755 buffer->aio_subpage.header.page_code !=
756 BMIC_SENSE_FEATURE_IO_PAGE ||
757 buffer->aio_subpage.header.subpage_code !=
758 BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE ||
759 get_unaligned_le16(&buffer->aio_subpage.header.page_length) <
760 MINIMUM_AIO_SUBPAGE_LENGTH) {
761 goto error;
762 }
763
764 ctrl_info->max_transfer_encrypted_sas_sata =
765 pqi_aio_limit_to_bytes(
766 &buffer->aio_subpage.max_transfer_encrypted_sas_sata);
767
768 ctrl_info->max_transfer_encrypted_nvme =
769 pqi_aio_limit_to_bytes(
770 &buffer->aio_subpage.max_transfer_encrypted_nvme);
771
772 ctrl_info->max_write_raid_5_6 =
773 pqi_aio_limit_to_bytes(
774 &buffer->aio_subpage.max_write_raid_5_6);
775
776 ctrl_info->max_write_raid_1_10_2drive =
777 pqi_aio_limit_to_bytes(
778 &buffer->aio_subpage.max_write_raid_1_10_2drive);
779
780 ctrl_info->max_write_raid_1_10_3drive =
781 pqi_aio_limit_to_bytes(
782 &buffer->aio_subpage.max_write_raid_1_10_3drive);
783
784error:
785 kfree(buffer);
786
787 return rc;
788}
789
58322fe0
KB		 790static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
791 enum bmic_flush_cache_shutdown_event shutdown_event)
6c223761
KB		 792{
793 int rc;
58322fe0 794 struct bmic_flush_cache *flush_cache;
6c223761
KB		 795
796 /*
797 * Don't bother trying to flush the cache if the controller is
798 * locked up.
799 */
800 if (pqi_ctrl_offline(ctrl_info))
801 return -ENXIO;
802
58322fe0
KB		 803 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
804 if (!flush_cache)
6c223761
KB		 805 return -ENOMEM;
806
58322fe0
KB		 807 flush_cache->shutdown_event = shutdown_event;
808
02133b68
DC		 809 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
810 sizeof(*flush_cache));
6c223761 811
58322fe0 812 kfree(flush_cache);
6c223761
KB		 813
814 return rc;
815}
816
3d46a59a
DB		 817int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info,
818 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length,
819 struct pqi_raid_error_info *error_info)
820{
821 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU,
822 buffer, buffer_length, error_info);
823}
171c2865 824
694c5d5b 825#define PQI_FETCH_PTRAID_DATA (1 << 31)
171c2865
DC		 826
827static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
6c223761
KB		 828{
829 int rc;
171c2865 830 struct bmic_diag_options *diag;
6c223761 831
171c2865
DC		 832 diag = kzalloc(sizeof(*diag), GFP_KERNEL);
833 if (!diag)
834 return -ENOMEM;
835
02133b68 836 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
694c5d5b 837 diag, sizeof(*diag));
6c223761 838 if (rc)
171c2865 839 goto out;
6c223761 840
171c2865
DC		 841 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
842
694c5d5b
KB		 843 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS, diag,
844 sizeof(*diag));
845
171c2865
DC		 846out:
847 kfree(diag);
6c223761 848
6c223761
KB		 849 return rc;
850}
851
02133b68 852static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 853 void *buffer, size_t buffer_length)
854{
02133b68 855 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
694c5d5b 856 buffer, buffer_length);
6c223761
KB		 857}
858
859#pragma pack(1)
860
861struct bmic_host_wellness_driver_version {
862 u8 start_tag[4];
863 u8 driver_version_tag[2];
864 __le16 driver_version_length;
865 char driver_version[32];
b2346b50 866 u8 dont_write_tag[2];
6c223761
KB		 867 u8 end_tag[2];
868};
869
870#pragma pack()
871
872static int pqi_write_driver_version_to_host_wellness(
873 struct pqi_ctrl_info *ctrl_info)
874{
875 int rc;
876 struct bmic_host_wellness_driver_version *buffer;
877 size_t buffer_length;
878
879 buffer_length = sizeof(*buffer);
880
881 buffer = kmalloc(buffer_length, GFP_KERNEL);
882 if (!buffer)
883 return -ENOMEM;
884
885 buffer->start_tag[0] = '<';
886 buffer->start_tag[1] = 'H';
887 buffer->start_tag[2] = 'W';
888 buffer->start_tag[3] = '>';
889 buffer->driver_version_tag[0] = 'D';
890 buffer->driver_version_tag[1] = 'V';
891 put_unaligned_le16(sizeof(buffer->driver_version),
892 &buffer->driver_version_length);
061ef06a 893 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
6c223761
KB		 894 sizeof(buffer->driver_version) - 1);
895 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
b2346b50
MR		 896 buffer->dont_write_tag[0] = 'D';
897 buffer->dont_write_tag[1] = 'W';
6c223761
KB		 898 buffer->end_tag[0] = 'Z';
899 buffer->end_tag[1] = 'Z';
900
901 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
902
903 kfree(buffer);
904
905 return rc;
906}
907
908#pragma pack(1)
909
910struct bmic_host_wellness_time {
911 u8 start_tag[4];
912 u8 time_tag[2];
913 __le16 time_length;
914 u8 time[8];
915 u8 dont_write_tag[2];
916 u8 end_tag[2];
917};
918
919#pragma pack()
920
921static int pqi_write_current_time_to_host_wellness(
922 struct pqi_ctrl_info *ctrl_info)
923{
924 int rc;
925 struct bmic_host_wellness_time *buffer;
926 size_t buffer_length;
927 time64_t local_time;
928 unsigned int year;
ed10858e 929 struct tm tm;
6c223761
KB		 930
931 buffer_length = sizeof(*buffer);
932
933 buffer = kmalloc(buffer_length, GFP_KERNEL);
934 if (!buffer)
935 return -ENOMEM;
936
937 buffer->start_tag[0] = '<';
938 buffer->start_tag[1] = 'H';
939 buffer->start_tag[2] = 'W';
940 buffer->start_tag[3] = '>';
941 buffer->time_tag[0] = 'T';
942 buffer->time_tag[1] = 'D';
943 put_unaligned_le16(sizeof(buffer->time),
944 &buffer->time_length);
945
ed10858e
AB		 946 local_time = ktime_get_real_seconds();
947 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
6c223761
KB		 948 year = tm.tm_year + 1900;
949
950 buffer->time[0] = bin2bcd(tm.tm_hour);
951 buffer->time[1] = bin2bcd(tm.tm_min);
952 buffer->time[2] = bin2bcd(tm.tm_sec);
953 buffer->time[3] = 0;
954 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
955 buffer->time[5] = bin2bcd(tm.tm_mday);
956 buffer->time[6] = bin2bcd(year / 100);
957 buffer->time[7] = bin2bcd(year % 100);
958
959 buffer->dont_write_tag[0] = 'D';
960 buffer->dont_write_tag[1] = 'W';
961 buffer->end_tag[0] = 'Z';
962 buffer->end_tag[1] = 'Z';
963
964 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
965
966 kfree(buffer);
967
968 return rc;
969}
970
4fd22c13 971#define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ)
6c223761
KB		 972
973static void pqi_update_time_worker(struct work_struct *work)
974{
975 int rc;
976 struct pqi_ctrl_info *ctrl_info;
977
978 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
979 update_time_work);
980
5f310425
KB		 981 if (pqi_ctrl_offline(ctrl_info))
982 return;
983
6c223761
KB		 984 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
985 if (rc)
986 dev_warn(&ctrl_info->pci_dev->dev,
987 "error updating time on controller\n");
988
989 schedule_delayed_work(&ctrl_info->update_time_work,
990 PQI_UPDATE_TIME_WORK_INTERVAL);
991}
992
583891c9 993static inline void pqi_schedule_update_time_worker(struct pqi_ctrl_info *ctrl_info)
6c223761 994{
4fbebf1a 995 schedule_delayed_work(&ctrl_info->update_time_work, 0);
061ef06a
KB		 996}
997
583891c9 998static inline void pqi_cancel_update_time_worker(struct pqi_ctrl_info *ctrl_info)
061ef06a 999{
061ef06a 1000 cancel_delayed_work_sync(&ctrl_info->update_time_work);
6c223761
KB		 1001}
1002
583891c9
KB		 1003static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, void *buffer,
1004 size_t buffer_length)
6c223761 1005{
583891c9 1006 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer, buffer_length);
6c223761
KB		 1007}
1008
583891c9 1009static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, void **buffer)
6c223761
KB		 1010{
1011 int rc;
1012 size_t lun_list_length;
1013 size_t lun_data_length;
1014 size_t new_lun_list_length;
1015 void *lun_data = NULL;
1016 struct report_lun_header *report_lun_header;
1017
1018 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
1019 if (!report_lun_header) {
1020 rc = -ENOMEM;
1021 goto out;
1022 }
1023
583891c9 1024 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header, sizeof(*report_lun_header));
6c223761
KB		 1025 if (rc)
1026 goto out;
1027
1028 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
1029
1030again:
1031 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
1032
1033 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
1034 if (!lun_data) {
1035 rc = -ENOMEM;
1036 goto out;
1037 }
1038
1039 if (lun_list_length == 0) {
1040 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
1041 goto out;
1042 }
1043
1044 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
1045 if (rc)
1046 goto out;
1047
583891c9
KB		 1048 new_lun_list_length =
1049 get_unaligned_be32(&((struct report_lun_header *)lun_data)->list_length);
6c223761
KB		 1050
1051 if (new_lun_list_length > lun_list_length) {
1052 lun_list_length = new_lun_list_length;
1053 kfree(lun_data);
1054 goto again;
1055 }
1056
1057out:
1058 kfree(report_lun_header);
1059
1060 if (rc) {
1061 kfree(lun_data);
1062 lun_data = NULL;
1063 }
1064
1065 *buffer = lun_data;
1066
1067 return rc;
1068}
1069
583891c9 1070static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info, void **buffer)
6c223761 1071{
583891c9 1072 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS, buffer);
6c223761
KB		 1073}
1074
583891c9 1075static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info, void **buffer)
6c223761
KB		 1076{
1077 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
1078}
1079
1080static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
1081 struct report_phys_lun_extended **physdev_list,
1082 struct report_log_lun_extended **logdev_list)
1083{
1084 int rc;
1085 size_t logdev_list_length;
1086 size_t logdev_data_length;
1087 struct report_log_lun_extended *internal_logdev_list;
1088 struct report_log_lun_extended *logdev_data;
1089 struct report_lun_header report_lun_header;
1090
1091 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
1092 if (rc)
1093 dev_err(&ctrl_info->pci_dev->dev,
1094 "report physical LUNs failed\n");
1095
1096 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
1097 if (rc)
1098 dev_err(&ctrl_info->pci_dev->dev,
1099 "report logical LUNs failed\n");
1100
1101 /*
1102 * Tack the controller itself onto the end of the logical device list.
1103 */
1104
1105 logdev_data = *logdev_list;
1106
1107 if (logdev_data) {
1108 logdev_list_length =
1109 get_unaligned_be32(&logdev_data->header.list_length);
1110 } else {
1111 memset(&report_lun_header, 0, sizeof(report_lun_header));
1112 logdev_data =
1113 (struct report_log_lun_extended *)&report_lun_header;
1114 logdev_list_length = 0;
1115 }
1116
1117 logdev_data_length = sizeof(struct report_lun_header) +
1118 logdev_list_length;
1119
1120 internal_logdev_list = kmalloc(logdev_data_length +
1121 sizeof(struct report_log_lun_extended), GFP_KERNEL);
1122 if (!internal_logdev_list) {
1123 kfree(*logdev_list);
1124 *logdev_list = NULL;
1125 return -ENOMEM;
1126 }
1127
1128 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
1129 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
1130 sizeof(struct report_log_lun_extended_entry));
1131 put_unaligned_be32(logdev_list_length +
1132 sizeof(struct report_log_lun_extended_entry),
1133 &internal_logdev_list->header.list_length);
1134
1135 kfree(*logdev_list);
1136 *logdev_list = internal_logdev_list;
1137
1138 return 0;
1139}
1140
1141static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
1142 int bus, int target, int lun)
1143{
1144 device->bus = bus;
1145 device->target = target;
1146 device->lun = lun;
1147}
1148
1149static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
1150{
1151 u8 *scsi3addr;
1152 u32 lunid;
bd10cf0b
KB		 1153 int bus;
1154 int target;
1155 int lun;
6c223761
KB		 1156
1157 scsi3addr = device->scsi3addr;
1158 lunid = get_unaligned_le32(scsi3addr);
1159
1160 if (pqi_is_hba_lunid(scsi3addr)) {
1161 /* The specified device is the controller. */
1162 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
1163 device->target_lun_valid = true;
1164 return;
1165 }
1166
1167 if (pqi_is_logical_device(device)) {
bd10cf0b
KB		 1168 if (device->is_external_raid_device) {
1169 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
1170 target = (lunid >> 16) & 0x3fff;
1171 lun = lunid & 0xff;
1172 } else {
1173 bus = PQI_RAID_VOLUME_BUS;
1174 target = 0;
1175 lun = lunid & 0x3fff;
1176 }
1177 pqi_set_bus_target_lun(device, bus, target, lun);
6c223761
KB		 1178 device->target_lun_valid = true;
1179 return;
1180 }
1181
1182 /*
1183 * Defer target and LUN assignment for non-controller physical devices
1184 * because the SAS transport layer will make these assignments later.
1185 */
1186 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
1187}
1188
1189static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
1190 struct pqi_scsi_dev *device)
1191{
1192 int rc;
1193 u8 raid_level;
1194 u8 *buffer;
1195
1196 raid_level = SA_RAID_UNKNOWN;
1197
1198 buffer = kmalloc(64, GFP_KERNEL);
1199 if (buffer) {
1200 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1201 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1202 if (rc == 0) {
1203 raid_level = buffer[8];
1204 if (raid_level > SA_RAID_MAX)
1205 raid_level = SA_RAID_UNKNOWN;
1206 }
1207 kfree(buffer);
1208 }
1209
1210 device->raid_level = raid_level;
1211}
1212
1213static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1214 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1215{
1216 char *err_msg;
1217 u32 raid_map_size;
1218 u32 r5or6_blocks_per_row;
6c223761
KB		 1219
1220 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1221
1222 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1223 err_msg = "RAID map too small";
1224 goto bad_raid_map;
1225 }
1226
6c223761
KB		 1227 if (device->raid_level == SA_RAID_1) {
1228 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1229 err_msg = "invalid RAID-1 map";
1230 goto bad_raid_map;
1231 }
7a012c23 1232 } else if (device->raid_level == SA_RAID_TRIPLE) {
6c223761 1233 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
7a012c23 1234 err_msg = "invalid RAID-1(Triple) map";
6c223761
KB		 1235 goto bad_raid_map;
1236 }
1237 } else if ((device->raid_level == SA_RAID_5 ||
1238 device->raid_level == SA_RAID_6) &&
1239 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1240 /* RAID 50/60 */
1241 r5or6_blocks_per_row =
1242 get_unaligned_le16(&raid_map->strip_size) *
1243 get_unaligned_le16(&raid_map->data_disks_per_row);
1244 if (r5or6_blocks_per_row == 0) {
1245 err_msg = "invalid RAID-5 or RAID-6 map";
1246 goto bad_raid_map;
1247 }
1248 }
1249
1250 return 0;
1251
1252bad_raid_map:
d87d5474 1253 dev_warn(&ctrl_info->pci_dev->dev,
38a7338a
KB		 1254 "logical device %08x%08x %s\n",
1255 *((u32 *)&device->scsi3addr),
1256 *((u32 *)&device->scsi3addr[4]), err_msg);
6c223761
KB		 1257
1258 return -EINVAL;
1259}
1260
1261static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1262 struct pqi_scsi_dev *device)
1263{
1264 int rc;
a91aaae0 1265 u32 raid_map_size;
6c223761
KB		 1266 struct raid_map *raid_map;
1267
1268 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1269 if (!raid_map)
1270 return -ENOMEM;
1271
a91aaae0
AK		 1272 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1273 device->scsi3addr, raid_map, sizeof(*raid_map),
1274 0, NULL, NO_TIMEOUT);
1275
6c223761
KB		 1276 if (rc)
1277 goto error;
1278
a91aaae0 1279 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
6c223761 1280
a91aaae0 1281 if (raid_map_size > sizeof(*raid_map)) {
6c223761 1282
a91aaae0
AK		 1283 kfree(raid_map);
1284
1285 raid_map = kmalloc(raid_map_size, GFP_KERNEL);
1286 if (!raid_map)
1287 return -ENOMEM;
1288
1289 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1290 device->scsi3addr, raid_map, raid_map_size,
1291 0, NULL, NO_TIMEOUT);
1292 if (rc)
1293 goto error;
1294
1295 if (get_unaligned_le32(&raid_map->structure_size)
1296 != raid_map_size) {
1297 dev_warn(&ctrl_info->pci_dev->dev,
583891c9 1298 "requested %u bytes, received %u bytes\n",
a91aaae0
AK		 1299 raid_map_size,
1300 get_unaligned_le32(&raid_map->structure_size));
1301 goto error;
1302 }
1303 }
6c223761
KB		 1304
1305 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1306 if (rc)
1307 goto error;
1308
1309 device->raid_map = raid_map;
1310
1311 return 0;
1312
1313error:
1314 kfree(raid_map);
1315
1316 return rc;
1317}
1318
f6cc2a77
KB		 1319static void pqi_set_max_transfer_encrypted(struct pqi_ctrl_info *ctrl_info,
1320 struct pqi_scsi_dev *device)
1321{
1322 if (!ctrl_info->lv_drive_type_mix_valid) {
1323 device->max_transfer_encrypted = ~0;
1324 return;
1325 }
1326
1327 switch (LV_GET_DRIVE_TYPE_MIX(device->scsi3addr)) {
1328 case LV_DRIVE_TYPE_MIX_SAS_HDD_ONLY:
1329 case LV_DRIVE_TYPE_MIX_SATA_HDD_ONLY:
1330 case LV_DRIVE_TYPE_MIX_SAS_OR_SATA_SSD_ONLY:
1331 case LV_DRIVE_TYPE_MIX_SAS_SSD_ONLY:
1332 case LV_DRIVE_TYPE_MIX_SATA_SSD_ONLY:
1333 case LV_DRIVE_TYPE_MIX_SAS_ONLY:
1334 case LV_DRIVE_TYPE_MIX_SATA_ONLY:
1335 device->max_transfer_encrypted =
1336 ctrl_info->max_transfer_encrypted_sas_sata;
1337 break;
1338 case LV_DRIVE_TYPE_MIX_NVME_ONLY:
1339 device->max_transfer_encrypted =
1340 ctrl_info->max_transfer_encrypted_nvme;
1341 break;
1342 case LV_DRIVE_TYPE_MIX_UNKNOWN:
1343 case LV_DRIVE_TYPE_MIX_NO_RESTRICTION:
1344 default:
1345 device->max_transfer_encrypted =
1346 min(ctrl_info->max_transfer_encrypted_sas_sata,
1347 ctrl_info->max_transfer_encrypted_nvme);
1348 break;
1349 }
1350}
1351
588a63fe 1352static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1353 struct pqi_scsi_dev *device)
1354{
1355 int rc;
1356 u8 *buffer;
588a63fe 1357 u8 bypass_status;
6c223761
KB		 1358
1359 buffer = kmalloc(64, GFP_KERNEL);
1360 if (!buffer)
1361 return;
1362
1363 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
588a63fe 1364 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
6c223761
KB		 1365 if (rc)
1366 goto out;
1367
694c5d5b
KB		 1368#define RAID_BYPASS_STATUS 4
1369#define RAID_BYPASS_CONFIGURED 0x1
1370#define RAID_BYPASS_ENABLED 0x2
6c223761 1371
588a63fe
KB		 1372 bypass_status = buffer[RAID_BYPASS_STATUS];
1373 device->raid_bypass_configured =
1374 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1375 if (device->raid_bypass_configured &&
1376 (bypass_status & RAID_BYPASS_ENABLED) &&
f6cc2a77 1377 pqi_get_raid_map(ctrl_info, device) == 0) {
588a63fe 1378 device->raid_bypass_enabled = true;
f6cc2a77
KB		 1379 if (get_unaligned_le16(&device->raid_map->flags) &
1380 RAID_MAP_ENCRYPTION_ENABLED)
1381 pqi_set_max_transfer_encrypted(ctrl_info, device);
1382 }
6c223761
KB		 1383
1384out:
1385 kfree(buffer);
1386}
1387
1388/*
1389 * Use vendor-specific VPD to determine online/offline status of a volume.
1390 */
1391
1392static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1393 struct pqi_scsi_dev *device)
1394{
1395 int rc;
1396 size_t page_length;
1397 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1398 bool volume_offline = true;
1399 u32 volume_flags;
1400 struct ciss_vpd_logical_volume_status *vpd;
1401
1402 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1403 if (!vpd)
1404 goto no_buffer;
1405
1406 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1407 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1408 if (rc)
1409 goto out;
1410
7ff44499
DC		 1411 if (vpd->page_code != CISS_VPD_LV_STATUS)
1412 goto out;
1413
6c223761
KB		 1414 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1415 volume_status) + vpd->page_length;
1416 if (page_length < sizeof(*vpd))
1417 goto out;
1418
1419 volume_status = vpd->volume_status;
1420 volume_flags = get_unaligned_be32(&vpd->flags);
1421 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1422
1423out:
1424 kfree(vpd);
1425no_buffer:
1426 device->volume_status = volume_status;
1427 device->volume_offline = volume_offline;
1428}
1429
ce143793
KB		 1430static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info,
1431 struct pqi_scsi_dev *device,
1432 struct bmic_identify_physical_device *id_phys)
1433{
1434 int rc;
26b390ab 1435
ce143793
KB		 1436 memset(id_phys, 0, sizeof(*id_phys));
1437
1438 rc = pqi_identify_physical_device(ctrl_info, device,
1439 id_phys, sizeof(*id_phys));
1440 if (rc) {
1441 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1442 return rc;
1443 }
1444
1445 scsi_sanitize_inquiry_string(&id_phys->model[0], 8);
1446 scsi_sanitize_inquiry_string(&id_phys->model[8], 16);
1447
1448 memcpy(device->vendor, &id_phys->model[0], sizeof(device->vendor));
1449 memcpy(device->model, &id_phys->model[8], sizeof(device->model));
1450
1451 device->box_index = id_phys->box_index;
1452 device->phys_box_on_bus = id_phys->phys_box_on_bus;
1453 device->phy_connected_dev_type = id_phys->phy_connected_dev_type[0];
1454 device->queue_depth =
1455 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1456 device->active_path_index = id_phys->active_path_number;
1457 device->path_map = id_phys->redundant_path_present_map;
1458 memcpy(&device->box,
1459 &id_phys->alternate_paths_phys_box_on_port,
1460 sizeof(device->box));
1461 memcpy(&device->phys_connector,
1462 &id_phys->alternate_paths_phys_connector,
1463 sizeof(device->phys_connector));
1464 device->bay = id_phys->phys_bay_in_box;
1465
1466 return 0;
1467}
1468
1469static int pqi_get_logical_device_info(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1470 struct pqi_scsi_dev *device)
1471{
1472 int rc;
1473 u8 *buffer;
3d46a59a 1474
6c223761
KB		 1475 buffer = kmalloc(64, GFP_KERNEL);
1476 if (!buffer)
1477 return -ENOMEM;
1478
1479 /* Send an inquiry to the device to see what it is. */
ce143793
KB		 1480 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64);
1481 if (rc)
1482 goto out;
6c223761
KB		 1483
1484 scsi_sanitize_inquiry_string(&buffer[8], 8);
1485 scsi_sanitize_inquiry_string(&buffer[16], 16);
1486
1487 device->devtype = buffer[0] & 0x1f;
cbe0c7b1
KB		 1488 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1489 memcpy(device->model, &buffer[16], sizeof(device->model));
6c223761 1490
ce143793 1491 if (device->devtype == TYPE_DISK) {
bd10cf0b
KB		 1492 if (device->is_external_raid_device) {
1493 device->raid_level = SA_RAID_UNKNOWN;
1494 device->volume_status = CISS_LV_OK;
1495 device->volume_offline = false;
1496 } else {
1497 pqi_get_raid_level(ctrl_info, device);
588a63fe 1498 pqi_get_raid_bypass_status(ctrl_info, device);
bd10cf0b
KB		 1499 pqi_get_volume_status(ctrl_info, device);
1500 }
6c223761
KB		 1501 }
1502
1503out:
1504 kfree(buffer);
1505
1506 return rc;
1507}
1508
ce143793 1509static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1510 struct pqi_scsi_dev *device,
1511 struct bmic_identify_physical_device *id_phys)
1512{
1513 int rc;
1514
ce143793
KB		 1515 if (device->is_expander_smp_device)
1516 return 0;
6c223761 1517
ce143793
KB		 1518 if (pqi_is_logical_device(device))
1519 rc = pqi_get_logical_device_info(ctrl_info, device);
1520 else
1521 rc = pqi_get_physical_device_info(ctrl_info, device, id_phys);
694c5d5b 1522
ce143793 1523 return rc;
6c223761
KB		 1524}
1525
1526static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1527 struct pqi_scsi_dev *device)
1528{
1529 char *status;
1530 static const char unknown_state_str[] =
1531 "Volume is in an unknown state (%u)";
1532 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1533
1534 switch (device->volume_status) {
1535 case CISS_LV_OK:
1536 status = "Volume online";
1537 break;
1538 case CISS_LV_FAILED:
1539 status = "Volume failed";
1540 break;
1541 case CISS_LV_NOT_CONFIGURED:
1542 status = "Volume not configured";
1543 break;
1544 case CISS_LV_DEGRADED:
1545 status = "Volume degraded";
1546 break;
1547 case CISS_LV_READY_FOR_RECOVERY:
1548 status = "Volume ready for recovery operation";
1549 break;
1550 case CISS_LV_UNDERGOING_RECOVERY:
1551 status = "Volume undergoing recovery";
1552 break;
1553 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1554 status = "Wrong physical drive was replaced";
1555 break;
1556 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1557 status = "A physical drive not properly connected";
1558 break;
1559 case CISS_LV_HARDWARE_OVERHEATING:
1560 status = "Hardware is overheating";
1561 break;
1562 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1563 status = "Hardware has overheated";
1564 break;
1565 case CISS_LV_UNDERGOING_EXPANSION:
1566 status = "Volume undergoing expansion";
1567 break;
1568 case CISS_LV_NOT_AVAILABLE:
1569 status = "Volume waiting for transforming volume";
1570 break;
1571 case CISS_LV_QUEUED_FOR_EXPANSION:
1572 status = "Volume queued for expansion";
1573 break;
1574 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1575 status = "Volume disabled due to SCSI ID conflict";
1576 break;
1577 case CISS_LV_EJECTED:
1578 status = "Volume has been ejected";
1579 break;
1580 case CISS_LV_UNDERGOING_ERASE:
1581 status = "Volume undergoing background erase";
1582 break;
1583 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1584 status = "Volume ready for predictive spare rebuild";
1585 break;
1586 case CISS_LV_UNDERGOING_RPI:
1587 status = "Volume undergoing rapid parity initialization";
1588 break;
1589 case CISS_LV_PENDING_RPI:
1590 status = "Volume queued for rapid parity initialization";
1591 break;
1592 case CISS_LV_ENCRYPTED_NO_KEY:
1593 status = "Encrypted volume inaccessible - key not present";
1594 break;
1595 case CISS_LV_UNDERGOING_ENCRYPTION:
1596 status = "Volume undergoing encryption process";
1597 break;
1598 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1599 status = "Volume undergoing encryption re-keying process";
1600 break;
1601 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
d87d5474 1602 status = "Volume encrypted but encryption is disabled";
6c223761
KB		 1603 break;
1604 case CISS_LV_PENDING_ENCRYPTION:
1605 status = "Volume pending migration to encrypted state";
1606 break;
1607 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1608 status = "Volume pending encryption rekeying";
1609 break;
1610 case CISS_LV_NOT_SUPPORTED:
1611 status = "Volume not supported on this controller";
1612 break;
1613 case CISS_LV_STATUS_UNAVAILABLE:
1614 status = "Volume status not available";
1615 break;
1616 default:
1617 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1618 unknown_state_str, device->volume_status);
1619 status = unknown_state_buffer;
1620 break;
1621 }
1622
1623 dev_info(&ctrl_info->pci_dev->dev,
1624 "scsi %d:%d:%d:%d %s\n",
1625 ctrl_info->scsi_host->host_no,
1626 device->bus, device->target, device->lun, status);
1627}
1628
6c223761
KB		 1629static void pqi_rescan_worker(struct work_struct *work)
1630{
1631 struct pqi_ctrl_info *ctrl_info;
1632
1633 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1634 rescan_work);
1635
1636 pqi_scan_scsi_devices(ctrl_info);
1637}
1638
1639static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1640 struct pqi_scsi_dev *device)
1641{
1642 int rc;
1643
1644 if (pqi_is_logical_device(device))
1645 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1646 device->target, device->lun);
1647 else
1648 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1649
1650 return rc;
1651}
1652
1e46731e
MR		 1653#define PQI_PENDING_IO_TIMEOUT_SECS 20
1654
583891c9 1655static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device)
6c223761 1656{
1e46731e
MR		 1657 int rc;
1658
1659 pqi_device_remove_start(device);
1660
4d15ad38 1661 rc = pqi_device_wait_for_pending_io(ctrl_info, device, PQI_PENDING_IO_TIMEOUT_SECS);
1e46731e
MR		 1662 if (rc)
1663 dev_err(&ctrl_info->pci_dev->dev,
4d15ad38 1664 "scsi %d:%d:%d:%d removing device with %d outstanding command(s)\n",
1e46731e
MR		 1665 ctrl_info->scsi_host->host_no, device->bus,
1666 device->target, device->lun,
1667 atomic_read(&device->scsi_cmds_outstanding));
1668
6c223761
KB		 1669 if (pqi_is_logical_device(device))
1670 scsi_remove_device(device->sdev);
1671 else
1672 pqi_remove_sas_device(device);
1673}
1674
1675/* Assumes the SCSI device list lock is held. */
1676
1677static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1678 int bus, int target, int lun)
1679{
1680 struct pqi_scsi_dev *device;
1681
4d15ad38
KB		 1682 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
1683 if (device->bus == bus && device->target == target && device->lun == lun)
6c223761
KB		 1684 return device;
1685
1686 return NULL;
1687}
1688
583891c9 1689static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1, struct pqi_scsi_dev *dev2)
6c223761
KB		 1690{
1691 if (dev1->is_physical_device != dev2->is_physical_device)
1692 return false;
1693
1694 if (dev1->is_physical_device)
1695 return dev1->wwid == dev2->wwid;
1696
583891c9 1697 return memcmp(dev1->volume_id, dev2->volume_id, sizeof(dev1->volume_id)) == 0;
6c223761
KB		 1698}
1699
1700enum pqi_find_result {
1701 DEVICE_NOT_FOUND,
1702 DEVICE_CHANGED,
1703 DEVICE_SAME,
1704};
1705
1706static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
4d15ad38 1707 struct pqi_scsi_dev *device_to_find, struct pqi_scsi_dev **matching_device)
6c223761
KB		 1708{
1709 struct pqi_scsi_dev *device;
1710
4d15ad38
KB		 1711 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
1712 if (pqi_scsi3addr_equal(device_to_find->scsi3addr, device->scsi3addr)) {
6c223761
KB		 1713 *matching_device = device;
1714 if (pqi_device_equal(device_to_find, device)) {
1715 if (device_to_find->volume_offline)
1716 return DEVICE_CHANGED;
1717 return DEVICE_SAME;
1718 }
1719 return DEVICE_CHANGED;
1720 }
1721 }
1722
1723 return DEVICE_NOT_FOUND;
1724}
1725
3d46a59a
DB		 1726static inline const char *pqi_device_type(struct pqi_scsi_dev *device)
1727{
1728 if (device->is_expander_smp_device)
1729 return "Enclosure SMP ";
1730
1731 return scsi_device_type(device->devtype);
1732}
1733
6de783f6
KB		 1734#define PQI_DEV_INFO_BUFFER_LENGTH 128
1735
6c223761
KB		 1736static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1737 char *action, struct pqi_scsi_dev *device)
1738{
6de783f6
KB		 1739 ssize_t count;
1740 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1741
1742 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1743 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1744
1745 if (device->target_lun_valid)
181aea89 1746 count += scnprintf(buffer + count,
6de783f6
KB		 1747 PQI_DEV_INFO_BUFFER_LENGTH - count,
1748 "%d:%d",
1749 device->target,
1750 device->lun);
1751 else
181aea89 1752 count += scnprintf(buffer + count,
6de783f6
KB		 1753 PQI_DEV_INFO_BUFFER_LENGTH - count,
1754 "-:-");
1755
1756 if (pqi_is_logical_device(device))
181aea89 1757 count += scnprintf(buffer + count,
6de783f6
KB		 1758 PQI_DEV_INFO_BUFFER_LENGTH - count,
1759 " %08x%08x",
1760 *((u32 *)&device->scsi3addr),
1761 *((u32 *)&device->scsi3addr[4]));
1762 else
181aea89 1763 count += scnprintf(buffer + count,
6de783f6
KB		 1764 PQI_DEV_INFO_BUFFER_LENGTH - count,
1765 " %016llx", device->sas_address);
1766
181aea89 1767 count += scnprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
6de783f6 1768 " %s %.8s %.16s ",
3d46a59a 1769 pqi_device_type(device),
6c223761 1770 device->vendor,
6de783f6
KB		 1771 device->model);
1772
1773 if (pqi_is_logical_device(device)) {
1774 if (device->devtype == TYPE_DISK)
181aea89 1775 count += scnprintf(buffer + count,
6de783f6
KB		 1776 PQI_DEV_INFO_BUFFER_LENGTH - count,
1777 "SSDSmartPathCap%c En%c %-12s",
588a63fe
KB		 1778 device->raid_bypass_configured ? '+' : '-',
1779 device->raid_bypass_enabled ? '+' : '-',
6de783f6
KB		 1780 pqi_raid_level_to_string(device->raid_level));
1781 } else {
181aea89 1782 count += scnprintf(buffer + count,
6de783f6
KB		 1783 PQI_DEV_INFO_BUFFER_LENGTH - count,
1784 "AIO%c", device->aio_enabled ? '+' : '-');
1785 if (device->devtype == TYPE_DISK ||
1786 device->devtype == TYPE_ZBC)
181aea89 1787 count += scnprintf(buffer + count,
6de783f6
KB		 1788 PQI_DEV_INFO_BUFFER_LENGTH - count,
1789 " qd=%-6d", device->queue_depth);
1790 }
1791
1792 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
6c223761
KB		 1793}
1794
1795/* Assumes the SCSI device list lock is held. */
1796
1797static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1798 struct pqi_scsi_dev *new_device)
1799{
1800 existing_device->devtype = new_device->devtype;
1801 existing_device->device_type = new_device->device_type;
1802 existing_device->bus = new_device->bus;
1803 if (new_device->target_lun_valid) {
1804 existing_device->target = new_device->target;
1805 existing_device->lun = new_device->lun;
1806 existing_device->target_lun_valid = true;
1807 }
1808
244ca45e
MR		 1809 if ((existing_device->volume_status == CISS_LV_QUEUED_FOR_EXPANSION ||
1810 existing_device->volume_status == CISS_LV_UNDERGOING_EXPANSION) &&
1811 new_device->volume_status == CISS_LV_OK)
1812 existing_device->rescan = true;
1813
6c223761
KB		 1814 /* By definition, the scsi3addr and wwid fields are already the same. */
1815
1816 existing_device->is_physical_device = new_device->is_physical_device;
bd10cf0b
KB		 1817 existing_device->is_external_raid_device =
1818 new_device->is_external_raid_device;
3d46a59a
DB		 1819 existing_device->is_expander_smp_device =
1820 new_device->is_expander_smp_device;
6c223761
KB		 1821 existing_device->aio_enabled = new_device->aio_enabled;
1822 memcpy(existing_device->vendor, new_device->vendor,
1823 sizeof(existing_device->vendor));
1824 memcpy(existing_device->model, new_device->model,
1825 sizeof(existing_device->model));
1826 existing_device->sas_address = new_device->sas_address;
1827 existing_device->raid_level = new_device->raid_level;
1828 existing_device->queue_depth = new_device->queue_depth;
1829 existing_device->aio_handle = new_device->aio_handle;
1830 existing_device->volume_status = new_device->volume_status;
1831 existing_device->active_path_index = new_device->active_path_index;
1832 existing_device->path_map = new_device->path_map;
1833 existing_device->bay = new_device->bay;
2d2ad4bc
GW		 1834 existing_device->box_index = new_device->box_index;
1835 existing_device->phys_box_on_bus = new_device->phys_box_on_bus;
583891c9 1836 existing_device->phy_connected_dev_type = new_device->phy_connected_dev_type;
6c223761
KB		 1837 memcpy(existing_device->box, new_device->box,
1838 sizeof(existing_device->box));
1839 memcpy(existing_device->phys_connector, new_device->phys_connector,
1840 sizeof(existing_device->phys_connector));
7a012c23 1841 existing_device->next_bypass_group = 0;
6c223761
KB		 1842 kfree(existing_device->raid_map);
1843 existing_device->raid_map = new_device->raid_map;
588a63fe
KB		 1844 existing_device->raid_bypass_configured =
1845 new_device->raid_bypass_configured;
1846 existing_device->raid_bypass_enabled =
1847 new_device->raid_bypass_enabled;
a9a68101 1848 existing_device->device_offline = false;
6c223761
KB		 1849
1850 /* To prevent this from being freed later. */
1851 new_device->raid_map = NULL;
1852}
1853
1854static inline void pqi_free_device(struct pqi_scsi_dev *device)
1855{
1856 if (device) {
1857 kfree(device->raid_map);
1858 kfree(device);
1859 }
1860}
1861
1862/*
1863 * Called when exposing a new device to the OS fails in order to re-adjust
1864 * our internal SCSI device list to match the SCSI ML's view.
1865 */
1866
1867static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1868 struct pqi_scsi_dev *device)
1869{
1870 unsigned long flags;
1871
1872 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1873 list_del(&device->scsi_device_list_entry);
1874 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1875
1876 /* Allow the device structure to be freed later. */
1877 device->keep_device = false;
1878}
1879
3d46a59a
DB		 1880static inline bool pqi_is_device_added(struct pqi_scsi_dev *device)
1881{
1882 if (device->is_expander_smp_device)
1883 return device->sas_port != NULL;
1884
1885 return device->sdev != NULL;
1886}
1887
6c223761
KB		 1888static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1889 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1890{
1891 int rc;
1892 unsigned int i;
1893 unsigned long flags;
1894 enum pqi_find_result find_result;
1895 struct pqi_scsi_dev *device;
1896 struct pqi_scsi_dev *next;
1897 struct pqi_scsi_dev *matching_device;
8a994a04
KB		 1898 LIST_HEAD(add_list);
1899 LIST_HEAD(delete_list);
6c223761
KB		 1900
1901 /*
1902 * The idea here is to do as little work as possible while holding the
1903 * spinlock. That's why we go to great pains to defer anything other
1904 * than updating the internal device list until after we release the
1905 * spinlock.
1906 */
1907
1908 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1909
1910 /* Assume that all devices in the existing list have gone away. */
4d15ad38 1911 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
6c223761
KB		 1912 device->device_gone = true;
1913
1914 for (i = 0; i < num_new_devices; i++) {
1915 device = new_device_list[i];
1916
1917 find_result = pqi_scsi_find_entry(ctrl_info, device,
694c5d5b 1918 &matching_device);
6c223761
KB		 1919
1920 switch (find_result) {
1921 case DEVICE_SAME:
1922 /*
1923 * The newly found device is already in the existing
1924 * device list.
1925 */
1926 device->new_device = false;
1927 matching_device->device_gone = false;
1928 pqi_scsi_update_device(matching_device, device);
1929 break;
1930 case DEVICE_NOT_FOUND:
1931 /*
1932 * The newly found device is NOT in the existing device
1933 * list.
1934 */
1935 device->new_device = true;
1936 break;
1937 case DEVICE_CHANGED:
1938 /*
1939 * The original device has gone away and we need to add
1940 * the new device.
1941 */
1942 device->new_device = true;
1943 break;
6c223761
KB		 1944 }
1945 }
1946
1947 /* Process all devices that have gone away. */
1948 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1949 scsi_device_list_entry) {
1950 if (device->device_gone) {
4d15ad38 1951 list_del_init(&device->scsi_device_list_entry);
6c223761
KB		 1952 list_add_tail(&device->delete_list_entry, &delete_list);
1953 }
1954 }
1955
1956 /* Process all new devices. */
1957 for (i = 0; i < num_new_devices; i++) {
1958 device = new_device_list[i];
1959 if (!device->new_device)
1960 continue;
1961 if (device->volume_offline)
1962 continue;
1963 list_add_tail(&device->scsi_device_list_entry,
1964 &ctrl_info->scsi_device_list);
1965 list_add_tail(&device->add_list_entry, &add_list);
1966 /* To prevent this device structure from being freed later. */
1967 device->keep_device = true;
1968 }
1969
6c223761
KB		 1970 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1971
4fd22c13
MR		 1972 if (pqi_ctrl_in_ofa(ctrl_info))
1973 pqi_ctrl_ofa_done(ctrl_info);
1974
6c223761 1975 /* Remove all devices that have gone away. */
4d15ad38 1976 list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) {
6c223761
KB		 1977 if (device->volume_offline) {
1978 pqi_dev_info(ctrl_info, "offline", device);
1979 pqi_show_volume_status(ctrl_info, device);
6c223761
KB		 1980 }
1981 list_del(&device->delete_list_entry);
4d15ad38
KB		 1982 if (pqi_is_device_added(device)) {
1983 pqi_remove_device(ctrl_info, device);
1984 } else {
1985 if (!device->volume_offline)
1986 pqi_dev_info(ctrl_info, "removed", device);
1987 pqi_free_device(device);
1988 }
6c223761
KB		 1989 }
1990
1991 /*
1992 * Notify the SCSI ML if the queue depth of any existing device has
1993 * changed.
1994 */
583891c9
KB		 1995 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
1996 if (device->sdev && device->queue_depth != device->advertised_queue_depth) {
1997 device->advertised_queue_depth = device->queue_depth;
1998 scsi_change_queue_depth(device->sdev, device->advertised_queue_depth);
244ca45e
MR		 1999 if (device->rescan) {
2000 scsi_rescan_device(&device->sdev->sdev_gendev);
2001 device->rescan = false;
2002 }
6c223761
KB		 2003 }
2004 }
2005
2006 /* Expose any new devices. */
2007 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
3d46a59a 2008 if (!pqi_is_device_added(device)) {
6c223761 2009 rc = pqi_add_device(ctrl_info, device);
ce143793
KB		 2010 if (rc == 0) {
2011 pqi_dev_info(ctrl_info, "added", device);
2012 } else {
6c223761
KB		 2013 dev_warn(&ctrl_info->pci_dev->dev,
2014 "scsi %d:%d:%d:%d addition failed, device not added\n",
2015 ctrl_info->scsi_host->host_no,
2016 device->bus, device->target,
2017 device->lun);
2018 pqi_fixup_botched_add(ctrl_info, device);
6c223761
KB		 2019 }
2020 }
6c223761
KB		 2021 }
2022}
2023
ce143793 2024static inline bool pqi_is_supported_device(struct pqi_scsi_dev *device)
6c223761 2025{
ce143793
KB		 2026 /*
2027 * Only support the HBA controller itself as a RAID
2028 * controller. If it's a RAID controller other than
2029 * the HBA itself (an external RAID controller, for
2030 * example), we don't support it.
2031 */
2032 if (device->device_type == SA_DEVICE_TYPE_CONTROLLER &&
2033 !pqi_is_hba_lunid(device->scsi3addr))
583891c9 2034 return false;
6c223761 2035
ce143793 2036 return true;
6c223761
KB		 2037}
2038
94086f5b 2039static inline bool pqi_skip_device(u8 *scsi3addr)
6c223761 2040{
94086f5b
KB		 2041 /* Ignore all masked devices. */
2042 if (MASKED_DEVICE(scsi3addr))
6c223761 2043 return true;
6c223761
KB		 2044
2045 return false;
2046}
2047
522bc026
DC		 2048static inline void pqi_mask_device(u8 *scsi3addr)
2049{
2050 scsi3addr[3] |= 0xc0;
2051}
2052
3d46a59a
DB		 2053static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device)
2054{
ce143793
KB		 2055 switch (device->device_type) {
2056 case SA_DEVICE_TYPE_SAS:
2057 case SA_DEVICE_TYPE_EXPANDER_SMP:
2058 case SA_DEVICE_TYPE_SES:
3d46a59a
DB		 2059 return true;
2060 }
2061
2062 return false;
2063}
2064
cd128244
DC		 2065static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
2066{
583891c9 2067 return !device->is_physical_device || !pqi_skip_device(device->scsi3addr);
cd128244
DC		 2068}
2069
6c223761
KB		 2070static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2071{
2072 int i;
2073 int rc;
8a994a04 2074 LIST_HEAD(new_device_list_head);
6c223761
KB		 2075 struct report_phys_lun_extended *physdev_list = NULL;
2076 struct report_log_lun_extended *logdev_list = NULL;
2077 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
2078 struct report_log_lun_extended_entry *log_lun_ext_entry;
2079 struct bmic_identify_physical_device *id_phys = NULL;
2080 u32 num_physicals;
2081 u32 num_logicals;
2082 struct pqi_scsi_dev **new_device_list = NULL;
2083 struct pqi_scsi_dev *device;
2084 struct pqi_scsi_dev *next;
2085 unsigned int num_new_devices;
2086 unsigned int num_valid_devices;
2087 bool is_physical_device;
2088 u8 *scsi3addr;
5e6a9760
GW		 2089 unsigned int physical_index;
2090 unsigned int logical_index;
6c223761 2091 static char *out_of_memory_msg =
6de783f6 2092 "failed to allocate memory, device discovery stopped";
6c223761 2093
6c223761
KB		 2094 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
2095 if (rc)
2096 goto out;
2097
2098 if (physdev_list)
2099 num_physicals =
2100 get_unaligned_be32(&physdev_list->header.list_length)
2101 / sizeof(physdev_list->lun_entries[0]);
2102 else
2103 num_physicals = 0;
2104
2105 if (logdev_list)
2106 num_logicals =
2107 get_unaligned_be32(&logdev_list->header.list_length)
2108 / sizeof(logdev_list->lun_entries[0]);
2109 else
2110 num_logicals = 0;
2111
2112 if (num_physicals) {
2113 /*
2114 * We need this buffer for calls to pqi_get_physical_disk_info()
2115 * below. We allocate it here instead of inside
2116 * pqi_get_physical_disk_info() because it's a fairly large
2117 * buffer.
2118 */
2119 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
2120 if (!id_phys) {
2121 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2122 out_of_memory_msg);
2123 rc = -ENOMEM;
2124 goto out;
2125 }
522bc026 2126
694c5d5b 2127 if (pqi_hide_vsep) {
522bc026
DC		 2128 for (i = num_physicals - 1; i >= 0; i--) {
2129 phys_lun_ext_entry =
2130 &physdev_list->lun_entries[i];
583891c9
KB		 2131 if (CISS_GET_DRIVE_NUMBER(phys_lun_ext_entry->lunid) == PQI_VSEP_CISS_BTL) {
2132 pqi_mask_device(phys_lun_ext_entry->lunid);
522bc026
DC		 2133 break;
2134 }
2135 }
2136 }
6c223761
KB		 2137 }
2138
f6cc2a77
KB		 2139 if (num_logicals &&
2140 (logdev_list->header.flags & CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX))
2141 ctrl_info->lv_drive_type_mix_valid = true;
2142
6c223761
KB		 2143 num_new_devices = num_physicals + num_logicals;
2144
6da2ec56
KC		 2145 new_device_list = kmalloc_array(num_new_devices,
2146 sizeof(*new_device_list),
2147 GFP_KERNEL);
6c223761
KB		 2148 if (!new_device_list) {
2149 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
2150 rc = -ENOMEM;
2151 goto out;
2152 }
2153
2154 for (i = 0; i < num_new_devices; i++) {
2155 device = kzalloc(sizeof(*device), GFP_KERNEL);
2156 if (!device) {
2157 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2158 out_of_memory_msg);
2159 rc = -ENOMEM;
2160 goto out;
2161 }
2162 list_add_tail(&device->new_device_list_entry,
2163 &new_device_list_head);
2164 }
2165
2166 device = NULL;
2167 num_valid_devices = 0;
5e6a9760
GW		 2168 physical_index = 0;
2169 logical_index = 0;
6c223761
KB		 2170
2171 for (i = 0; i < num_new_devices; i++) {
2172
5e6a9760
GW		 2173 if ((!pqi_expose_ld_first && i < num_physicals) ||
2174 (pqi_expose_ld_first && i >= num_logicals)) {
6c223761 2175 is_physical_device = true;
5e6a9760
GW		 2176 phys_lun_ext_entry =
2177 &physdev_list->lun_entries[physical_index++];
6c223761
KB		 2178 log_lun_ext_entry = NULL;
2179 scsi3addr = phys_lun_ext_entry->lunid;
2180 } else {
2181 is_physical_device = false;
2182 phys_lun_ext_entry = NULL;
2183 log_lun_ext_entry =
5e6a9760 2184 &logdev_list->lun_entries[logical_index++];
6c223761
KB		 2185 scsi3addr = log_lun_ext_entry->lunid;
2186 }
2187
94086f5b 2188 if (is_physical_device && pqi_skip_device(scsi3addr))
6c223761
KB		 2189 continue;
2190
2191 if (device)
2192 device = list_next_entry(device, new_device_list_entry);
2193 else
2194 device = list_first_entry(&new_device_list_head,
2195 struct pqi_scsi_dev, new_device_list_entry);
2196
2197 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
2198 device->is_physical_device = is_physical_device;
3d46a59a 2199 if (is_physical_device) {
ce143793
KB		 2200 device->device_type = phys_lun_ext_entry->device_type;
2201 if (device->device_type == SA_DEVICE_TYPE_EXPANDER_SMP)
3d46a59a
DB		 2202 device->is_expander_smp_device = true;
2203 } else {
bd10cf0b
KB		 2204 device->is_external_raid_device =
2205 pqi_is_external_raid_addr(scsi3addr);
3d46a59a 2206 }
6c223761 2207
ce143793
KB		 2208 if (!pqi_is_supported_device(device))
2209 continue;
2210
6c223761 2211 /* Gather information about the device. */
ce143793 2212 rc = pqi_get_device_info(ctrl_info, device, id_phys);
6c223761
KB		 2213 if (rc == -ENOMEM) {
2214 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2215 out_of_memory_msg);
2216 goto out;
2217 }
2218 if (rc) {
6de783f6
KB		 2219 if (device->is_physical_device)
2220 dev_warn(&ctrl_info->pci_dev->dev,
2221 "obtaining device info failed, skipping physical device %016llx\n",
583891c9 2222 get_unaligned_be64(&phys_lun_ext_entry->wwid));
6de783f6
KB		 2223 else
2224 dev_warn(&ctrl_info->pci_dev->dev,
2225 "obtaining device info failed, skipping logical device %08x%08x\n",
2226 *((u32 *)&device->scsi3addr),
2227 *((u32 *)&device->scsi3addr[4]));
6c223761
KB		 2228 rc = 0;
2229 continue;
2230 }
2231
6c223761
KB		 2232 pqi_assign_bus_target_lun(device);
2233
6c223761
KB		 2234 if (device->is_physical_device) {
2235 device->wwid = phys_lun_ext_entry->wwid;
2236 if ((phys_lun_ext_entry->device_flags &
694c5d5b 2237 CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED) &&
3d46a59a 2238 phys_lun_ext_entry->aio_handle) {
583891c9
KB		 2239 device->aio_enabled = true;
2240 device->aio_handle =
2241 phys_lun_ext_entry->aio_handle;
3d46a59a 2242 }
6c223761
KB		 2243 } else {
2244 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
2245 sizeof(device->volume_id));
2246 }
2247
3d46a59a
DB		 2248 if (pqi_is_device_with_sas_address(device))
2249 device->sas_address = get_unaligned_be64(&device->wwid);
6c223761
KB		 2250
2251 new_device_list[num_valid_devices++] = device;
2252 }
2253
2254 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
2255
2256out:
2257 list_for_each_entry_safe(device, next, &new_device_list_head,
2258 new_device_list_entry) {
2259 if (device->keep_device)
2260 continue;
2261 list_del(&device->new_device_list_entry);
2262 pqi_free_device(device);
2263 }
2264
2265 kfree(new_device_list);
2266 kfree(physdev_list);
2267 kfree(logdev_list);
2268 kfree(id_phys);
2269
2270 return rc;
2271}
2272
6c223761
KB		 2273static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2274{
530dd8a7 2275 int rc = 0;
6c223761
KB		 2276
2277 if (pqi_ctrl_offline(ctrl_info))
2278 return -ENXIO;
2279
530dd8a7 2280 if (!mutex_trylock(&ctrl_info->scan_mutex)) {
5f310425 2281 pqi_schedule_rescan_worker_delayed(ctrl_info);
9946a398 2282 rc = -EINPROGRESS;
530dd8a7
MR		 2283 } else {
2284 rc = pqi_update_scsi_devices(ctrl_info);
2285 if (rc)
2286 pqi_schedule_rescan_worker_delayed(ctrl_info);
2287 mutex_unlock(&ctrl_info->scan_mutex);
2288 }
6c223761
KB		 2289
2290 return rc;
2291}
2292
2293static void pqi_scan_start(struct Scsi_Host *shost)
2294{
4fd22c13
MR		 2295 struct pqi_ctrl_info *ctrl_info;
2296
2297 ctrl_info = shost_to_hba(shost);
2298 if (pqi_ctrl_in_ofa(ctrl_info))
2299 return;
2300
2301 pqi_scan_scsi_devices(ctrl_info);
6c223761
KB		 2302}
2303
2304/* Returns TRUE if scan is finished. */
2305
2306static int pqi_scan_finished(struct Scsi_Host *shost,
2307 unsigned long elapsed_time)
2308{
2309 struct pqi_ctrl_info *ctrl_info;
2310
2311 ctrl_info = shost_priv(shost);
2312
2313 return !mutex_is_locked(&ctrl_info->scan_mutex);
2314}
2315
061ef06a
KB		 2316static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
2317{
2318 mutex_lock(&ctrl_info->scan_mutex);
2319 mutex_unlock(&ctrl_info->scan_mutex);
2320}
2321
2322static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
2323{
2324 mutex_lock(&ctrl_info->lun_reset_mutex);
2325 mutex_unlock(&ctrl_info->lun_reset_mutex);
2326}
2327
4fd22c13
MR		 2328static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info)
2329{
2330 mutex_lock(&ctrl_info->ofa_mutex);
2331 mutex_unlock(&ctrl_info->ofa_mutex);
2332}
2333
583891c9
KB		 2334static inline void pqi_set_encryption_info(struct pqi_encryption_info *encryption_info,
2335 struct raid_map *raid_map, u64 first_block)
6c223761
KB		 2336{
2337 u32 volume_blk_size;
2338
2339 /*
2340 * Set the encryption tweak values based on logical block address.
2341 * If the block size is 512, the tweak value is equal to the LBA.
2342 * For other block sizes, tweak value is (LBA * block size) / 512.
2343 */
2344 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2345 if (volume_blk_size != 512)
2346 first_block = (first_block * volume_blk_size) / 512;
2347
2348 encryption_info->data_encryption_key_index =
2349 get_unaligned_le16(&raid_map->data_encryption_key_index);
2350 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2351 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2352}
2353
2354/*
588a63fe 2355 * Attempt to perform RAID bypass mapping for a logical volume I/O.
6c223761
KB		 2356 */
2357
6702d2c4
DB		 2358static bool pqi_aio_raid_level_supported(struct pqi_ctrl_info *ctrl_info,
2359 struct pqi_scsi_dev_raid_map_data *rmd)
281a817f
DB		 2360{
2361 bool is_supported = true;
2362
2363 switch (rmd->raid_level) {
2364 case SA_RAID_0:
2365 break;
2366 case SA_RAID_1:
f6cc2a77
KB		 2367 if (rmd->is_write && (!ctrl_info->enable_r1_writes ||
2368 rmd->data_length > ctrl_info->max_write_raid_1_10_2drive))
2369 is_supported = false;
2370 break;
7a012c23 2371 case SA_RAID_TRIPLE:
f6cc2a77
KB		 2372 if (rmd->is_write && (!ctrl_info->enable_r1_writes ||
2373 rmd->data_length > ctrl_info->max_write_raid_1_10_3drive))
281a817f
DB		 2374 is_supported = false;
2375 break;
2376 case SA_RAID_5:
f6cc2a77
KB		 2377 if (rmd->is_write && (!ctrl_info->enable_r5_writes ||
2378 rmd->data_length > ctrl_info->max_write_raid_5_6))
6702d2c4
DB		 2379 is_supported = false;
2380 break;
281a817f 2381 case SA_RAID_6:
f6cc2a77
KB		 2382 if (rmd->is_write && (!ctrl_info->enable_r6_writes ||
2383 rmd->data_length > ctrl_info->max_write_raid_5_6))
281a817f
DB		 2384 is_supported = false;
2385 break;
281a817f
DB		 2386 default:
2387 is_supported = false;
f6cc2a77 2388 break;
281a817f
DB		 2389 }
2390
2391 return is_supported;
2392}
2393
6c223761
KB		 2394#define PQI_RAID_BYPASS_INELIGIBLE 1
2395
281a817f 2396static int pqi_get_aio_lba_and_block_count(struct scsi_cmnd *scmd,
583891c9 2397 struct pqi_scsi_dev_raid_map_data *rmd)
6c223761 2398{
6c223761
KB		 2399 /* Check for valid opcode, get LBA and block count. */
2400 switch (scmd->cmnd[0]) {
2401 case WRITE_6:
281a817f 2402 rmd->is_write = true;
df561f66 2403 fallthrough;
6c223761 2404 case READ_6:
281a817f 2405 rmd->first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
e018ef57 2406 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
281a817f
DB		 2407 rmd->block_cnt = (u32)scmd->cmnd[4];
2408 if (rmd->block_cnt == 0)
2409 rmd->block_cnt = 256;
6c223761
KB		 2410 break;
2411 case WRITE_10:
281a817f 2412 rmd->is_write = true;
df561f66 2413 fallthrough;
6c223761 2414 case READ_10:
281a817f
DB		 2415 rmd->first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2416 rmd->block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
6c223761
KB		 2417 break;
2418 case WRITE_12:
281a817f 2419 rmd->is_write = true;
df561f66 2420 fallthrough;
6c223761 2421 case READ_12:
281a817f
DB		 2422 rmd->first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2423 rmd->block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
6c223761
KB		 2424 break;
2425 case WRITE_16:
281a817f 2426 rmd->is_write = true;
df561f66 2427 fallthrough;
6c223761 2428 case READ_16:
281a817f
DB		 2429 rmd->first_block = get_unaligned_be64(&scmd->cmnd[2]);
2430 rmd->block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
6c223761
KB		 2431 break;
2432 default:
2433 /* Process via normal I/O path. */
2434 return PQI_RAID_BYPASS_INELIGIBLE;
2435 }
2436
281a817f 2437 put_unaligned_le32(scsi_bufflen(scmd), &rmd->data_length);
6c223761 2438
281a817f
DB		 2439 return 0;
2440}
6c223761 2441
281a817f 2442static int pci_get_aio_common_raid_map_values(struct pqi_ctrl_info *ctrl_info,
583891c9 2443 struct pqi_scsi_dev_raid_map_data *rmd, struct raid_map *raid_map)
281a817f
DB		 2444{
2445#if BITS_PER_LONG == 32
2446 u64 tmpdiv;
2447#endif
2448
2449 rmd->last_block = rmd->first_block + rmd->block_cnt - 1;
6c223761
KB		 2450
2451 /* Check for invalid block or wraparound. */
281a817f
DB		 2452 if (rmd->last_block >=
2453 get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2454 rmd->last_block < rmd->first_block)
6c223761
KB		 2455 return PQI_RAID_BYPASS_INELIGIBLE;
2456
281a817f 2457 rmd->data_disks_per_row =
583891c9 2458 get_unaligned_le16(&raid_map->data_disks_per_row);
281a817f
DB		 2459 rmd->strip_size = get_unaligned_le16(&raid_map->strip_size);
2460 rmd->layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
6c223761
KB		 2461
2462 /* Calculate stripe information for the request. */
281a817f 2463 rmd->blocks_per_row = rmd->data_disks_per_row * rmd->strip_size;
6c223761 2464#if BITS_PER_LONG == 32
281a817f
DB		 2465 tmpdiv = rmd->first_block;
2466 do_div(tmpdiv, rmd->blocks_per_row);
2467 rmd->first_row = tmpdiv;
2468 tmpdiv = rmd->last_block;
2469 do_div(tmpdiv, rmd->blocks_per_row);
2470 rmd->last_row = tmpdiv;
2471 rmd->first_row_offset = (u32)(rmd->first_block - (rmd->first_row * rmd->blocks_per_row));
2472 rmd->last_row_offset = (u32)(rmd->last_block - (rmd->last_row * rmd->blocks_per_row));
2473 tmpdiv = rmd->first_row_offset;
2474 do_div(tmpdiv, rmd->strip_size);
2475 rmd->first_column = tmpdiv;
2476 tmpdiv = rmd->last_row_offset;
2477 do_div(tmpdiv, rmd->strip_size);
2478 rmd->last_column = tmpdiv;
6c223761 2479#else
281a817f
DB		 2480 rmd->first_row = rmd->first_block / rmd->blocks_per_row;
2481 rmd->last_row = rmd->last_block / rmd->blocks_per_row;
2482 rmd->first_row_offset = (u32)(rmd->first_block -
583891c9 2483 (rmd->first_row * rmd->blocks_per_row));
281a817f 2484 rmd->last_row_offset = (u32)(rmd->last_block - (rmd->last_row *
583891c9 2485 rmd->blocks_per_row));
281a817f
DB		 2486 rmd->first_column = rmd->first_row_offset / rmd->strip_size;
2487 rmd->last_column = rmd->last_row_offset / rmd->strip_size;
6c223761
KB		 2488#endif
2489
2490 /* If this isn't a single row/column then give to the controller. */
281a817f 2491 if (rmd->first_row != rmd->last_row ||
583891c9 2492 rmd->first_column != rmd->last_column)
6c223761
KB		 2493 return PQI_RAID_BYPASS_INELIGIBLE;
2494
2495 /* Proceeding with driver mapping. */
281a817f 2496 rmd->total_disks_per_row = rmd->data_disks_per_row +
6c223761 2497 get_unaligned_le16(&raid_map->metadata_disks_per_row);
281a817f
DB		 2498 rmd->map_row = ((u32)(rmd->first_row >>
2499 raid_map->parity_rotation_shift)) %
6c223761 2500 get_unaligned_le16(&raid_map->row_cnt);
281a817f 2501 rmd->map_index = (rmd->map_row * rmd->total_disks_per_row) +
583891c9 2502 rmd->first_column;
6c223761 2503
281a817f
DB		 2504 return 0;
2505}
2506
281a817f 2507static int pqi_calc_aio_r5_or_r6(struct pqi_scsi_dev_raid_map_data *rmd,
583891c9 2508 struct raid_map *raid_map)
281a817f
DB		 2509{
2510#if BITS_PER_LONG == 32
2511 u64 tmpdiv;
2512#endif
2513 /* RAID 50/60 */
583891c9 2514 /* Verify first and last block are in same RAID group. */
281a817f 2515 rmd->stripesize = rmd->blocks_per_row * rmd->layout_map_count;
6c223761 2516#if BITS_PER_LONG == 32
281a817f
DB		 2517 tmpdiv = rmd->first_block;
2518 rmd->first_group = do_div(tmpdiv, rmd->stripesize);
2519 tmpdiv = rmd->first_group;
2520 do_div(tmpdiv, rmd->blocks_per_row);
2521 rmd->first_group = tmpdiv;
2522 tmpdiv = rmd->last_block;
2523 rmd->last_group = do_div(tmpdiv, rmd->stripesize);
2524 tmpdiv = rmd->last_group;
2525 do_div(tmpdiv, rmd->blocks_per_row);
2526 rmd->last_group = tmpdiv;
6c223761 2527#else
281a817f
DB		 2528 rmd->first_group = (rmd->first_block % rmd->stripesize) / rmd->blocks_per_row;
2529 rmd->last_group = (rmd->last_block % rmd->stripesize) / rmd->blocks_per_row;
6c223761 2530#endif
281a817f
DB		 2531 if (rmd->first_group != rmd->last_group)
2532 return PQI_RAID_BYPASS_INELIGIBLE;
6c223761 2533
583891c9 2534 /* Verify request is in a single row of RAID 5/6. */
6c223761 2535#if BITS_PER_LONG == 32
281a817f
DB		 2536 tmpdiv = rmd->first_block;
2537 do_div(tmpdiv, rmd->stripesize);
2538 rmd->first_row = tmpdiv;
2539 rmd->r5or6_first_row = tmpdiv;
2540 tmpdiv = rmd->last_block;
2541 do_div(tmpdiv, rmd->stripesize);
2542 rmd->r5or6_last_row = tmpdiv;
6c223761 2543#else
281a817f
DB		 2544 rmd->first_row = rmd->r5or6_first_row =
2545 rmd->first_block / rmd->stripesize;
2546 rmd->r5or6_last_row = rmd->last_block / rmd->stripesize;
6c223761 2547#endif
281a817f
DB		 2548 if (rmd->r5or6_first_row != rmd->r5or6_last_row)
2549 return PQI_RAID_BYPASS_INELIGIBLE;
6c223761 2550
583891c9 2551 /* Verify request is in a single column. */
6c223761 2552#if BITS_PER_LONG == 32
281a817f
DB		 2553 tmpdiv = rmd->first_block;
2554 rmd->first_row_offset = do_div(tmpdiv, rmd->stripesize);
2555 tmpdiv = rmd->first_row_offset;
2556 rmd->first_row_offset = (u32)do_div(tmpdiv, rmd->blocks_per_row);
2557 rmd->r5or6_first_row_offset = rmd->first_row_offset;
2558 tmpdiv = rmd->last_block;
2559 rmd->r5or6_last_row_offset = do_div(tmpdiv, rmd->stripesize);
2560 tmpdiv = rmd->r5or6_last_row_offset;
2561 rmd->r5or6_last_row_offset = do_div(tmpdiv, rmd->blocks_per_row);
2562 tmpdiv = rmd->r5or6_first_row_offset;
2563 do_div(tmpdiv, rmd->strip_size);
2564 rmd->first_column = rmd->r5or6_first_column = tmpdiv;
2565 tmpdiv = rmd->r5or6_last_row_offset;
2566 do_div(tmpdiv, rmd->strip_size);
2567 rmd->r5or6_last_column = tmpdiv;
6c223761 2568#else
281a817f 2569 rmd->first_row_offset = rmd->r5or6_first_row_offset =
583891c9
KB		 2570 (u32)((rmd->first_block % rmd->stripesize) %
2571 rmd->blocks_per_row);
281a817f
DB		 2572
2573 rmd->r5or6_last_row_offset =
2574 (u32)((rmd->last_block % rmd->stripesize) %
2575 rmd->blocks_per_row);
2576
2577 rmd->first_column =
583891c9 2578 rmd->r5or6_first_row_offset / rmd->strip_size;
281a817f
DB		 2579 rmd->r5or6_first_column = rmd->first_column;
2580 rmd->r5or6_last_column = rmd->r5or6_last_row_offset / rmd->strip_size;
2581#endif
2582 if (rmd->r5or6_first_column != rmd->r5or6_last_column)
2583 return PQI_RAID_BYPASS_INELIGIBLE;
2584
583891c9 2585 /* Request is eligible. */
281a817f
DB		 2586 rmd->map_row =
2587 ((u32)(rmd->first_row >> raid_map->parity_rotation_shift)) %
2588 get_unaligned_le16(&raid_map->row_cnt);
6c223761 2589
281a817f
DB		 2590 rmd->map_index = (rmd->first_group *
2591 (get_unaligned_le16(&raid_map->row_cnt) *
2592 rmd->total_disks_per_row)) +
2593 (rmd->map_row * rmd->total_disks_per_row) + rmd->first_column;
6c223761 2594
6702d2c4
DB		 2595 if (rmd->is_write) {
2596 u32 index;
2597
2598 /*
2599 * p_parity_it_nexus and q_parity_it_nexus are pointers to the
2600 * parity entries inside the device's raid_map.
2601 *
2602 * A device's RAID map is bounded by: number of RAID disks squared.
2603 *
2604 * The devices RAID map size is checked during device
2605 * initialization.
2606 */
2607 index = DIV_ROUND_UP(rmd->map_index + 1, rmd->total_disks_per_row);
2608 index *= rmd->total_disks_per_row;
2609 index -= get_unaligned_le16(&raid_map->metadata_disks_per_row);
2610
2611 rmd->p_parity_it_nexus = raid_map->disk_data[index].aio_handle;
2612 if (rmd->raid_level == SA_RAID_6) {
2613 rmd->q_parity_it_nexus = raid_map->disk_data[index + 1].aio_handle;
2614 rmd->xor_mult = raid_map->disk_data[rmd->map_index].xor_mult[1];
2615 }
2616 if (rmd->blocks_per_row == 0)
2617 return PQI_RAID_BYPASS_INELIGIBLE;
2618#if BITS_PER_LONG == 32
2619 tmpdiv = rmd->first_block;
2620 do_div(tmpdiv, rmd->blocks_per_row);
2621 rmd->row = tmpdiv;
2622#else
2623 rmd->row = rmd->first_block / rmd->blocks_per_row;
2624#endif
2625 }
2626
281a817f
DB		 2627 return 0;
2628}
2629
2630static void pqi_set_aio_cdb(struct pqi_scsi_dev_raid_map_data *rmd)
2631{
2632 /* Build the new CDB for the physical disk I/O. */
2633 if (rmd->disk_block > 0xffffffff) {
2634 rmd->cdb[0] = rmd->is_write ? WRITE_16 : READ_16;
2635 rmd->cdb[1] = 0;
2636 put_unaligned_be64(rmd->disk_block, &rmd->cdb[2]);
2637 put_unaligned_be32(rmd->disk_block_cnt, &rmd->cdb[10]);
2638 rmd->cdb[14] = 0;
2639 rmd->cdb[15] = 0;
2640 rmd->cdb_length = 16;
2641 } else {
2642 rmd->cdb[0] = rmd->is_write ? WRITE_10 : READ_10;
2643 rmd->cdb[1] = 0;
2644 put_unaligned_be32((u32)rmd->disk_block, &rmd->cdb[2]);
2645 rmd->cdb[6] = 0;
2646 put_unaligned_be16((u16)rmd->disk_block_cnt, &rmd->cdb[7]);
2647 rmd->cdb[9] = 0;
2648 rmd->cdb_length = 10;
2649 }
2650}
2651
7a012c23 2652static void pqi_calc_aio_r1_nexus(struct raid_map *raid_map,
583891c9 2653 struct pqi_scsi_dev_raid_map_data *rmd)
7a012c23
DB		 2654{
2655 u32 index;
2656 u32 group;
2657
2658 group = rmd->map_index / rmd->data_disks_per_row;
2659
2660 index = rmd->map_index - (group * rmd->data_disks_per_row);
2661 rmd->it_nexus[0] = raid_map->disk_data[index].aio_handle;
2662 index += rmd->data_disks_per_row;
2663 rmd->it_nexus[1] = raid_map->disk_data[index].aio_handle;
2664 if (rmd->layout_map_count > 2) {
2665 index += rmd->data_disks_per_row;
2666 rmd->it_nexus[2] = raid_map->disk_data[index].aio_handle;
2667 }
2668
2669 rmd->num_it_nexus_entries = rmd->layout_map_count;
2670}
2671
281a817f
DB		 2672static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2673 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2674 struct pqi_queue_group *queue_group)
2675{
281a817f 2676 int rc;
7a012c23
DB		 2677 struct raid_map *raid_map;
2678 u32 group;
2679 u32 next_bypass_group;
281a817f
DB		 2680 struct pqi_encryption_info *encryption_info_ptr;
2681 struct pqi_encryption_info encryption_info;
583891c9 2682 struct pqi_scsi_dev_raid_map_data rmd = { 0 };
281a817f
DB		 2683
2684 rc = pqi_get_aio_lba_and_block_count(scmd, &rmd);
2685 if (rc)
2686 return PQI_RAID_BYPASS_INELIGIBLE;
2687
2688 rmd.raid_level = device->raid_level;
2689
6702d2c4 2690 if (!pqi_aio_raid_level_supported(ctrl_info, &rmd))
281a817f
DB		 2691 return PQI_RAID_BYPASS_INELIGIBLE;
2692
2693 if (unlikely(rmd.block_cnt == 0))
2694 return PQI_RAID_BYPASS_INELIGIBLE;
2695
2696 raid_map = device->raid_map;
6c223761 2697
281a817f
DB		 2698 rc = pci_get_aio_common_raid_map_values(ctrl_info, &rmd, raid_map);
2699 if (rc)
2700 return PQI_RAID_BYPASS_INELIGIBLE;
6c223761 2701
7a012c23
DB		 2702 if (device->raid_level == SA_RAID_1 ||
2703 device->raid_level == SA_RAID_TRIPLE) {
2704 if (rmd.is_write) {
2705 pqi_calc_aio_r1_nexus(raid_map, &rmd);
2706 } else {
2707 group = device->next_bypass_group;
2708 next_bypass_group = group + 1;
2709 if (next_bypass_group >= rmd.layout_map_count)
2710 next_bypass_group = 0;
2711 device->next_bypass_group = next_bypass_group;
2712 rmd.map_index += group * rmd.data_disks_per_row;
2713 }
281a817f 2714 } else if ((device->raid_level == SA_RAID_5 ||
6702d2c4
DB		 2715 device->raid_level == SA_RAID_6) &&
2716 (rmd.layout_map_count > 1 || rmd.is_write)) {
281a817f
DB		 2717 rc = pqi_calc_aio_r5_or_r6(&rmd, raid_map);
2718 if (rc)
2719 return PQI_RAID_BYPASS_INELIGIBLE;
6c223761
KB		 2720 }
2721
281a817f
DB		 2722 if (unlikely(rmd.map_index >= RAID_MAP_MAX_ENTRIES))
2723 return PQI_RAID_BYPASS_INELIGIBLE;
2724
2725 rmd.aio_handle = raid_map->disk_data[rmd.map_index].aio_handle;
2726 rmd.disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2727 rmd.first_row * rmd.strip_size +
2728 (rmd.first_row_offset - rmd.first_column * rmd.strip_size);
2729 rmd.disk_block_cnt = rmd.block_cnt;
6c223761
KB		 2730
2731 /* Handle differing logical/physical block sizes. */
2732 if (raid_map->phys_blk_shift) {
281a817f
DB		 2733 rmd.disk_block <<= raid_map->phys_blk_shift;
2734 rmd.disk_block_cnt <<= raid_map->phys_blk_shift;
6c223761
KB		 2735 }
2736
281a817f 2737 if (unlikely(rmd.disk_block_cnt > 0xffff))
6c223761
KB		 2738 return PQI_RAID_BYPASS_INELIGIBLE;
2739
281a817f 2740 pqi_set_aio_cdb(&rmd);
6c223761 2741
583891c9 2742 if (get_unaligned_le16(&raid_map->flags) & RAID_MAP_ENCRYPTION_ENABLED) {
f6cc2a77
KB		 2743 if (rmd.data_length > device->max_transfer_encrypted)
2744 return PQI_RAID_BYPASS_INELIGIBLE;
583891c9 2745 pqi_set_encryption_info(&encryption_info, raid_map, rmd.first_block);
6c223761
KB		 2746 encryption_info_ptr = &encryption_info;
2747 } else {
2748 encryption_info_ptr = NULL;
2749 }
2750
6702d2c4
DB		 2751 if (rmd.is_write) {
2752 switch (device->raid_level) {
7a012c23
DB		 2753 case SA_RAID_1:
2754 case SA_RAID_TRIPLE:
2755 return pqi_aio_submit_r1_write_io(ctrl_info, scmd, queue_group,
2756 encryption_info_ptr, device, &rmd);
6702d2c4
DB		 2757 case SA_RAID_5:
2758 case SA_RAID_6:
2759 return pqi_aio_submit_r56_write_io(ctrl_info, scmd, queue_group,
583891c9 2760 encryption_info_ptr, device, &rmd);
6702d2c4 2761 }
6702d2c4
DB		 2762 }
2763
f6cc2a77
KB		 2764 return pqi_aio_submit_io(ctrl_info, scmd, rmd.aio_handle,
2765 rmd.cdb, rmd.cdb_length, queue_group,
2766 encryption_info_ptr, true);
6c223761
KB		 2767}
2768
2769#define PQI_STATUS_IDLE 0x0
2770
2771#define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2772#define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2773
2774#define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2775#define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2776#define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2777#define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2778#define PQI_DEVICE_STATE_ERROR 0x4
2779
2780#define PQI_MODE_READY_TIMEOUT_SECS 30
2781#define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2782
2783static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2784{
2785 struct pqi_device_registers __iomem *pqi_registers;
2786 unsigned long timeout;
2787 u64 signature;
2788 u8 status;
2789
2790 pqi_registers = ctrl_info->pqi_registers;
4fd22c13 2791 timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761
KB		 2792
2793 while (1) {
2794 signature = readq(&pqi_registers->signature);
2795 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2796 sizeof(signature)) == 0)
2797 break;
2798 if (time_after(jiffies, timeout)) {
2799 dev_err(&ctrl_info->pci_dev->dev,
2800 "timed out waiting for PQI signature\n");
2801 return -ETIMEDOUT;
2802 }
2803 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2804 }
2805
2806 while (1) {
2807 status = readb(&pqi_registers->function_and_status_code);
2808 if (status == PQI_STATUS_IDLE)
2809 break;
2810 if (time_after(jiffies, timeout)) {
2811 dev_err(&ctrl_info->pci_dev->dev,
2812 "timed out waiting for PQI IDLE\n");
2813 return -ETIMEDOUT;
2814 }
2815 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2816 }
2817
2818 while (1) {
2819 if (readl(&pqi_registers->device_status) ==
2820 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2821 break;
2822 if (time_after(jiffies, timeout)) {
2823 dev_err(&ctrl_info->pci_dev->dev,
2824 "timed out waiting for PQI all registers ready\n");
2825 return -ETIMEDOUT;
2826 }
2827 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2828 }
2829
2830 return 0;
2831}
2832
2833static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2834{
2835 struct pqi_scsi_dev *device;
2836
2837 device = io_request->scmd->device->hostdata;
588a63fe 2838 device->raid_bypass_enabled = false;
376fb880 2839 device->aio_enabled = false;
6c223761
KB		 2840}
2841
d87d5474 2842static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
6c223761
KB		 2843{
2844 struct pqi_ctrl_info *ctrl_info;
e58081a7 2845 struct pqi_scsi_dev *device;
6c223761 2846
03b288cf
KB		 2847 device = sdev->hostdata;
2848 if (device->device_offline)
2849 return;
2850
2851 device->device_offline = true;
03b288cf
KB		 2852 ctrl_info = shost_to_hba(sdev->host);
2853 pqi_schedule_rescan_worker(ctrl_info);
a9a68101 2854 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n",
03b288cf
KB		 2855 path, ctrl_info->scsi_host->host_no, device->bus,
2856 device->target, device->lun);
6c223761
KB		 2857}
2858
2859static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2860{
2861 u8 scsi_status;
2862 u8 host_byte;
2863 struct scsi_cmnd *scmd;
2864 struct pqi_raid_error_info *error_info;
2865 size_t sense_data_length;
2866 int residual_count;
2867 int xfer_count;
2868 struct scsi_sense_hdr sshdr;
2869
2870 scmd = io_request->scmd;
2871 if (!scmd)
2872 return;
2873
2874 error_info = io_request->error_info;
2875 scsi_status = error_info->status;
2876 host_byte = DID_OK;
2877
f5b63206
KB		 2878 switch (error_info->data_out_result) {
2879 case PQI_DATA_IN_OUT_GOOD:
2880 break;
2881 case PQI_DATA_IN_OUT_UNDERFLOW:
6c223761
KB		 2882 xfer_count =
2883 get_unaligned_le32(&error_info->data_out_transferred);
2884 residual_count = scsi_bufflen(scmd) - xfer_count;
2885 scsi_set_resid(scmd, residual_count);
2886 if (xfer_count < scmd->underflow)
2887 host_byte = DID_SOFT_ERROR;
f5b63206
KB		 2888 break;
2889 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
2890 case PQI_DATA_IN_OUT_ABORTED:
2891 host_byte = DID_ABORT;
2892 break;
2893 case PQI_DATA_IN_OUT_TIMEOUT:
2894 host_byte = DID_TIME_OUT;
2895 break;
2896 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
2897 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
2898 case PQI_DATA_IN_OUT_BUFFER_ERROR:
2899 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
2900 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
2901 case PQI_DATA_IN_OUT_ERROR:
2902 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
2903 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
2904 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
2905 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
2906 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
2907 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
2908 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
2909 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
2910 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
2911 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
2912 default:
2913 host_byte = DID_ERROR;
2914 break;
6c223761
KB		 2915 }
2916
2917 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2918 if (sense_data_length == 0)
2919 sense_data_length =
2920 get_unaligned_le16(&error_info->response_data_length);
2921 if (sense_data_length) {
2922 if (sense_data_length > sizeof(error_info->data))
2923 sense_data_length = sizeof(error_info->data);
2924
2925 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2926 scsi_normalize_sense(error_info->data,
2927 sense_data_length, &sshdr) &&
2928 sshdr.sense_key == HARDWARE_ERROR &&
8ef860ae 2929 sshdr.asc == 0x3e) {
441b7195
EV		 2930 struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host);
2931 struct pqi_scsi_dev *device = scmd->device->hostdata;
2932
8ef860ae
EV		 2933 switch (sshdr.ascq) {
2934 case 0x1: /* LOGICAL UNIT FAILURE */
2935 if (printk_ratelimit())
2936 scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n",
2937 ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
2938 pqi_take_device_offline(scmd->device, "RAID");
2939 host_byte = DID_NO_CONNECT;
2940 break;
2941
2942 default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */
2943 if (printk_ratelimit())
2944 scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n",
2945 sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
2946 break;
2947 }
6c223761
KB		 2948 }
2949
2950 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2951 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2952 memcpy(scmd->sense_buffer, error_info->data,
2953 sense_data_length);
2954 }
2955
2956 scmd->result = scsi_status;
2957 set_host_byte(scmd, host_byte);
2958}
2959
2960static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2961{
2962 u8 scsi_status;
2963 u8 host_byte;
2964 struct scsi_cmnd *scmd;
2965 struct pqi_aio_error_info *error_info;
2966 size_t sense_data_length;
2967 int residual_count;
2968 int xfer_count;
2969 bool device_offline;
2970
2971 scmd = io_request->scmd;
2972 error_info = io_request->error_info;
2973 host_byte = DID_OK;
2974 sense_data_length = 0;
2975 device_offline = false;
2976
2977 switch (error_info->service_response) {
2978 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2979 scsi_status = error_info->status;
2980 break;
2981 case PQI_AIO_SERV_RESPONSE_FAILURE:
2982 switch (error_info->status) {
2983 case PQI_AIO_STATUS_IO_ABORTED:
2984 scsi_status = SAM_STAT_TASK_ABORTED;
2985 break;
2986 case PQI_AIO_STATUS_UNDERRUN:
2987 scsi_status = SAM_STAT_GOOD;
2988 residual_count = get_unaligned_le32(
2989 &error_info->residual_count);
2990 scsi_set_resid(scmd, residual_count);
2991 xfer_count = scsi_bufflen(scmd) - residual_count;
2992 if (xfer_count < scmd->underflow)
2993 host_byte = DID_SOFT_ERROR;
2994 break;
2995 case PQI_AIO_STATUS_OVERRUN:
2996 scsi_status = SAM_STAT_GOOD;
2997 break;
2998 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2999 pqi_aio_path_disabled(io_request);
3000 scsi_status = SAM_STAT_GOOD;
3001 io_request->status = -EAGAIN;
3002 break;
3003 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
3004 case PQI_AIO_STATUS_INVALID_DEVICE:
376fb880
KB		 3005 if (!io_request->raid_bypass) {
3006 device_offline = true;
3007 pqi_take_device_offline(scmd->device, "AIO");
3008 host_byte = DID_NO_CONNECT;
3009 }
6c223761
KB		 3010 scsi_status = SAM_STAT_CHECK_CONDITION;
3011 break;
3012 case PQI_AIO_STATUS_IO_ERROR:
3013 default:
3014 scsi_status = SAM_STAT_CHECK_CONDITION;
3015 break;
3016 }
3017 break;
3018 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
3019 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
3020 scsi_status = SAM_STAT_GOOD;
3021 break;
3022 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
3023 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
3024 default:
3025 scsi_status = SAM_STAT_CHECK_CONDITION;
3026 break;
3027 }
3028
3029 if (error_info->data_present) {
3030 sense_data_length =
3031 get_unaligned_le16(&error_info->data_length);
3032 if (sense_data_length) {
3033 if (sense_data_length > sizeof(error_info->data))
3034 sense_data_length = sizeof(error_info->data);
3035 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
3036 sense_data_length = SCSI_SENSE_BUFFERSIZE;
3037 memcpy(scmd->sense_buffer, error_info->data,
3038 sense_data_length);
3039 }
3040 }
3041
3042 if (device_offline && sense_data_length == 0)
3043 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
3044 0x3e, 0x1);
3045
3046 scmd->result = scsi_status;
3047 set_host_byte(scmd, host_byte);
3048}
3049
3050static void pqi_process_io_error(unsigned int iu_type,
3051 struct pqi_io_request *io_request)
3052{
3053 switch (iu_type) {
3054 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
3055 pqi_process_raid_io_error(io_request);
3056 break;
3057 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
3058 pqi_process_aio_io_error(io_request);
3059 break;
3060 }
3061}
3062
3063static int pqi_interpret_task_management_response(
3064 struct pqi_task_management_response *response)
3065{
3066 int rc;
3067
3068 switch (response->response_code) {
b17f0486
KB		 3069 case SOP_TMF_COMPLETE:
3070 case SOP_TMF_FUNCTION_SUCCEEDED:
6c223761
KB		 3071 rc = 0;
3072 break;
3406384b
MR		 3073 case SOP_TMF_REJECTED:
3074 rc = -EAGAIN;
3075 break;
6c223761
KB		 3076 default:
3077 rc = -EIO;
3078 break;
3079 }
3080
3081 return rc;
3082}
3083
9e68cccc 3084static inline void pqi_invalid_response(struct pqi_ctrl_info *ctrl_info)
6c223761 3085{
9e68cccc
KB		 3086 pqi_take_ctrl_offline(ctrl_info);
3087}
3088
3089static int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info, struct pqi_queue_group *queue_group)
6c223761 3090{
9e68cccc 3091 int num_responses;
6c223761
KB		 3092 pqi_index_t oq_pi;
3093 pqi_index_t oq_ci;
3094 struct pqi_io_request *io_request;
3095 struct pqi_io_response *response;
3096 u16 request_id;
3097
3098 num_responses = 0;
3099 oq_ci = queue_group->oq_ci_copy;
3100
3101 while (1) {
dac12fbc 3102 oq_pi = readl(queue_group->oq_pi);
9e68cccc
KB		 3103 if (oq_pi >= ctrl_info->num_elements_per_oq) {
3104 pqi_invalid_response(ctrl_info);
3105 dev_err(&ctrl_info->pci_dev->dev,
3106 "I/O interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n",
3107 oq_pi, ctrl_info->num_elements_per_oq - 1, oq_ci);
3108 return -1;
3109 }
6c223761
KB		 3110 if (oq_pi == oq_ci)
3111 break;
3112
3113 num_responses++;
3114 response = queue_group->oq_element_array +
3115 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
3116
3117 request_id = get_unaligned_le16(&response->request_id);
9e68cccc
KB		 3118 if (request_id >= ctrl_info->max_io_slots) {
3119 pqi_invalid_response(ctrl_info);
3120 dev_err(&ctrl_info->pci_dev->dev,
3121 "request ID in response (%u) out of range (0-%u): producer index: %u consumer index: %u\n",
3122 request_id, ctrl_info->max_io_slots - 1, oq_pi, oq_ci);
3123 return -1;
3124 }
6c223761
KB		 3125
3126 io_request = &ctrl_info->io_request_pool[request_id];
9e68cccc
KB		 3127 if (atomic_read(&io_request->refcount) == 0) {
3128 pqi_invalid_response(ctrl_info);
3129 dev_err(&ctrl_info->pci_dev->dev,
3130 "request ID in response (%u) does not match an outstanding I/O request: producer index: %u consumer index: %u\n",
3131 request_id, oq_pi, oq_ci);
3132 return -1;
3133 }
6c223761
KB		 3134
3135 switch (response->header.iu_type) {
3136 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
3137 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2ba55c98
KB		 3138 if (io_request->scmd)
3139 io_request->scmd->result = 0;
df561f66 3140 fallthrough;
6c223761
KB		 3141 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
3142 break;
b212c251
KB		 3143 case PQI_RESPONSE_IU_VENDOR_GENERAL:
3144 io_request->status =
3145 get_unaligned_le16(
583891c9 3146 &((struct pqi_vendor_general_response *)response)->status);
b212c251 3147 break;
6c223761
KB		 3148 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
3149 io_request->status =
3150 pqi_interpret_task_management_response(
3151 (void *)response);
3152 break;
3153 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
3154 pqi_aio_path_disabled(io_request);
3155 io_request->status = -EAGAIN;
3156 break;
3157 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
3158 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
3159 io_request->error_info = ctrl_info->error_buffer +
3160 (get_unaligned_le16(&response->error_index) *
3161 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
9e68cccc 3162 pqi_process_io_error(response->header.iu_type, io_request);
6c223761
KB		 3163 break;
3164 default:
9e68cccc 3165 pqi_invalid_response(ctrl_info);
6c223761 3166 dev_err(&ctrl_info->pci_dev->dev,
9e68cccc
KB		 3167 "unexpected IU type: 0x%x: producer index: %u consumer index: %u\n",
3168 response->header.iu_type, oq_pi, oq_ci);
3169 return -1;
6c223761
KB		 3170 }
3171
9e68cccc 3172 io_request->io_complete_callback(io_request, io_request->context);
6c223761
KB		 3173
3174 /*
3175 * Note that the I/O request structure CANNOT BE TOUCHED after
3176 * returning from the I/O completion callback!
3177 */
6c223761
KB		 3178 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
3179 }
3180
3181 if (num_responses) {
3182 queue_group->oq_ci_copy = oq_ci;
3183 writel(oq_ci, queue_group->oq_ci);
3184 }
3185
3186 return num_responses;
3187}
3188
3189static inline unsigned int pqi_num_elements_free(unsigned int pi,
df7a1fcf 3190 unsigned int ci, unsigned int elements_in_queue)
6c223761
KB		 3191{
3192 unsigned int num_elements_used;
3193
3194 if (pi >= ci)
3195 num_elements_used = pi - ci;
3196 else
3197 num_elements_used = elements_in_queue - ci + pi;
3198
3199 return elements_in_queue - num_elements_used - 1;
3200}
3201
98f87667 3202static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 3203 struct pqi_event_acknowledge_request *iu, size_t iu_length)
3204{
3205 pqi_index_t iq_pi;
3206 pqi_index_t iq_ci;
3207 unsigned long flags;
3208 void *next_element;
6c223761
KB		 3209 struct pqi_queue_group *queue_group;
3210
3211 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
3212 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
3213
6c223761
KB		 3214 while (1) {
3215 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
3216
3217 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
dac12fbc 3218 iq_ci = readl(queue_group->iq_ci[RAID_PATH]);
6c223761
KB		 3219
3220 if (pqi_num_elements_free(iq_pi, iq_ci,
3221 ctrl_info->num_elements_per_iq))
3222 break;
3223
3224 spin_unlock_irqrestore(
3225 &queue_group->submit_lock[RAID_PATH], flags);
3226
98f87667 3227 if (pqi_ctrl_offline(ctrl_info))
6c223761 3228 return;
6c223761
KB		 3229 }
3230
3231 next_element = queue_group->iq_element_array[RAID_PATH] +
3232 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3233
3234 memcpy(next_element, iu, iu_length);
3235
3236 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
6c223761
KB		 3237 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
3238
3239 /*
3240 * This write notifies the controller that an IU is available to be
3241 * processed.
3242 */
3243 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
3244
3245 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
6c223761
KB		 3246}
3247
3248static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
3249 struct pqi_event *event)
3250{
3251 struct pqi_event_acknowledge_request request;
3252
3253 memset(&request, 0, sizeof(request));
3254
3255 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
3256 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
3257 &request.header.iu_length);
3258 request.event_type = event->event_type;
3259 request.event_id = event->event_id;
3260 request.additional_event_id = event->additional_event_id;
3261
98f87667 3262 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
6c223761
KB		 3263}
3264
4fd22c13
MR		 3265#define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30
3266#define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1
3267
3268static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status(
3269 struct pqi_ctrl_info *ctrl_info)
6c223761 3270{
4fd22c13 3271 u8 status;
583891c9 3272 unsigned long timeout;
6c223761 3273
4fd22c13 3274 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761 3275
4fd22c13
MR		 3276 while (1) {
3277 status = pqi_read_soft_reset_status(ctrl_info);
3278 if (status & PQI_SOFT_RESET_INITIATE)
3279 return RESET_INITIATE_DRIVER;
3280
3281 if (status & PQI_SOFT_RESET_ABORT)
3282 return RESET_ABORT;
3283
3284 if (time_after(jiffies, timeout)) {
3285 dev_err(&ctrl_info->pci_dev->dev,
3286 "timed out waiting for soft reset status\n");
3287 return RESET_TIMEDOUT;
3288 }
3289
3290 if (!sis_is_firmware_running(ctrl_info))
3291 return RESET_NORESPONSE;
3292
3293 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS);
3294 }
3295}
3296
3297static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info,
694c5d5b 3298 enum pqi_soft_reset_status reset_status)
4fd22c13
MR		 3299{
3300 int rc;
3301
3302 switch (reset_status) {
3303 case RESET_INITIATE_DRIVER:
4fd22c13
MR		 3304 case RESET_TIMEDOUT:
3305 dev_info(&ctrl_info->pci_dev->dev,
3306 "resetting controller %u\n", ctrl_info->ctrl_id);
3307 sis_soft_reset(ctrl_info);
df561f66 3308 fallthrough;
4fd22c13
MR		 3309 case RESET_INITIATE_FIRMWARE:
3310 rc = pqi_ofa_ctrl_restart(ctrl_info);
3311 pqi_ofa_free_host_buffer(ctrl_info);
3312 dev_info(&ctrl_info->pci_dev->dev,
3313 "Online Firmware Activation for controller %u: %s\n",
3314 ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED");
3315 break;
3316 case RESET_ABORT:
3317 pqi_ofa_ctrl_unquiesce(ctrl_info);
3318 dev_info(&ctrl_info->pci_dev->dev,
3319 "Online Firmware Activation for controller %u: %s\n",
3320 ctrl_info->ctrl_id, "ABORTED");
3321 break;
3322 case RESET_NORESPONSE:
3323 pqi_ofa_free_host_buffer(ctrl_info);
3324 pqi_take_ctrl_offline(ctrl_info);
3325 break;
3326 }
3327}
3328
3329static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info,
3330 struct pqi_event *event)
3331{
3332 u16 event_id;
3333 enum pqi_soft_reset_status status;
3334
3335 event_id = get_unaligned_le16(&event->event_id);
3336
3337 mutex_lock(&ctrl_info->ofa_mutex);
3338
3339 if (event_id == PQI_EVENT_OFA_QUIESCE) {
3340 dev_info(&ctrl_info->pci_dev->dev,
694c5d5b
KB		 3341 "Received Online Firmware Activation quiesce event for controller %u\n",
3342 ctrl_info->ctrl_id);
4fd22c13
MR		 3343 pqi_ofa_ctrl_quiesce(ctrl_info);
3344 pqi_acknowledge_event(ctrl_info, event);
3345 if (ctrl_info->soft_reset_handshake_supported) {
3346 status = pqi_poll_for_soft_reset_status(ctrl_info);
3347 pqi_process_soft_reset(ctrl_info, status);
3348 } else {
3349 pqi_process_soft_reset(ctrl_info,
3350 RESET_INITIATE_FIRMWARE);
3351 }
3352
3353 } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3354 pqi_acknowledge_event(ctrl_info, event);
3355 pqi_ofa_setup_host_buffer(ctrl_info,
3356 le32_to_cpu(event->ofa_bytes_requested));
3357 pqi_ofa_host_memory_update(ctrl_info);
583891c9 3358 } else if (event_id == PQI_EVENT_OFA_CANCELED) {
4fd22c13
MR		 3359 pqi_ofa_free_host_buffer(ctrl_info);
3360 pqi_acknowledge_event(ctrl_info, event);
3361 dev_info(&ctrl_info->pci_dev->dev,
694c5d5b
KB		 3362 "Online Firmware Activation(%u) cancel reason : %u\n",
3363 ctrl_info->ctrl_id, event->ofa_cancel_reason);
4fd22c13
MR		 3364 }
3365
3366 mutex_unlock(&ctrl_info->ofa_mutex);
3367}
3368
6c223761
KB		 3369static void pqi_event_worker(struct work_struct *work)
3370{
3371 unsigned int i;
3372 struct pqi_ctrl_info *ctrl_info;
6a50d6ad 3373 struct pqi_event *event;
6c223761
KB		 3374
3375 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
3376
7561a7e4
KB		 3377 pqi_ctrl_busy(ctrl_info);
3378 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
5f310425
KB		 3379 if (pqi_ctrl_offline(ctrl_info))
3380 goto out;
3381
3382 pqi_schedule_rescan_worker_delayed(ctrl_info);
7561a7e4 3383
6a50d6ad 3384 event = ctrl_info->events;
6c223761 3385 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
6a50d6ad
KB		 3386 if (event->pending) {
3387 event->pending = false;
4fd22c13
MR		 3388 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3389 pqi_ctrl_unbusy(ctrl_info);
3390 pqi_ofa_process_event(ctrl_info, event);
3391 return;
3392 }
6a50d6ad 3393 pqi_acknowledge_event(ctrl_info, event);
6c223761 3394 }
6a50d6ad 3395 event++;
6c223761
KB		 3396 }
3397
5f310425 3398out:
7561a7e4 3399 pqi_ctrl_unbusy(ctrl_info);
6c223761
KB		 3400}
3401
4fd22c13 3402#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ)
6c223761 3403
74a0f573 3404static void pqi_heartbeat_timer_handler(struct timer_list *t)
6c223761
KB		 3405{
3406 int num_interrupts;
98f87667 3407 u32 heartbeat_count;
583891c9 3408 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t, heartbeat_timer);
6c223761 3409
98f87667
KB		 3410 pqi_check_ctrl_health(ctrl_info);
3411 if (pqi_ctrl_offline(ctrl_info))
061ef06a
KB		 3412 return;
3413
6c223761 3414 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
98f87667 3415 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
6c223761
KB		 3416
3417 if (num_interrupts == ctrl_info->previous_num_interrupts) {
98f87667
KB		 3418 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
3419 dev_err(&ctrl_info->pci_dev->dev,
3420 "no heartbeat detected - last heartbeat count: %u\n",
3421 heartbeat_count);
6c223761
KB		 3422 pqi_take_ctrl_offline(ctrl_info);
3423 return;
3424 }
6c223761 3425 } else {
98f87667 3426 ctrl_info->previous_num_interrupts = num_interrupts;
6c223761
KB		 3427 }
3428
98f87667 3429 ctrl_info->previous_heartbeat_count = heartbeat_count;
6c223761
KB		 3430 mod_timer(&ctrl_info->heartbeat_timer,
3431 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
3432}
3433
3434static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3435{
98f87667
KB		 3436 if (!ctrl_info->heartbeat_counter)
3437 return;
3438
6c223761
KB		 3439 ctrl_info->previous_num_interrupts =
3440 atomic_read(&ctrl_info->num_interrupts);
98f87667
KB		 3441 ctrl_info->previous_heartbeat_count =
3442 pqi_read_heartbeat_counter(ctrl_info);
6c223761 3443
6c223761
KB		 3444 ctrl_info->heartbeat_timer.expires =
3445 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
061ef06a 3446 add_timer(&ctrl_info->heartbeat_timer);
6c223761
KB		 3447}
3448
3449static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3450{
98f87667 3451 del_timer_sync(&ctrl_info->heartbeat_timer);
6c223761
KB		 3452}
3453
6a50d6ad 3454static inline int pqi_event_type_to_event_index(unsigned int event_type)
6c223761
KB		 3455{
3456 int index;
3457
6a50d6ad
KB		 3458 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
3459 if (event_type == pqi_supported_event_types[index])
3460 return index;
6c223761 3461
6a50d6ad
KB		 3462 return -1;
3463}
3464
3465static inline bool pqi_is_supported_event(unsigned int event_type)
3466{
3467 return pqi_event_type_to_event_index(event_type) != -1;
6c223761
KB		 3468}
3469
4fd22c13
MR		 3470static void pqi_ofa_capture_event_payload(struct pqi_event *event,
3471 struct pqi_event_response *response)
3472{
3473 u16 event_id;
3474
3475 event_id = get_unaligned_le16(&event->event_id);
3476
3477 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3478 if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3479 event->ofa_bytes_requested =
3480 response->data.ofa_memory_allocation.bytes_requested;
583891c9 3481 } else if (event_id == PQI_EVENT_OFA_CANCELED) {
4fd22c13
MR		 3482 event->ofa_cancel_reason =
3483 response->data.ofa_cancelled.reason;
3484 }
3485 }
3486}
3487
9e68cccc 3488static int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
6c223761 3489{
9e68cccc 3490 int num_events;
6c223761
KB		 3491 pqi_index_t oq_pi;
3492 pqi_index_t oq_ci;
3493 struct pqi_event_queue *event_queue;
3494 struct pqi_event_response *response;
6a50d6ad 3495 struct pqi_event *event;
6c223761
KB		 3496 int event_index;
3497
3498 event_queue = &ctrl_info->event_queue;
3499 num_events = 0;
6c223761
KB		 3500 oq_ci = event_queue->oq_ci_copy;
3501
3502 while (1) {
dac12fbc 3503 oq_pi = readl(event_queue->oq_pi);
9e68cccc
KB		 3504 if (oq_pi >= PQI_NUM_EVENT_QUEUE_ELEMENTS) {
3505 pqi_invalid_response(ctrl_info);
3506 dev_err(&ctrl_info->pci_dev->dev,
3507 "event interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n",
3508 oq_pi, PQI_NUM_EVENT_QUEUE_ELEMENTS - 1, oq_ci);
3509 return -1;
3510 }
3511
6c223761
KB		 3512 if (oq_pi == oq_ci)
3513 break;
3514
3515 num_events++;
9e68cccc 3516 response = event_queue->oq_element_array + (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
6c223761 3517
583891c9 3518 event_index = pqi_event_type_to_event_index(response->event_type);
6c223761 3519
9e68cccc
KB		 3520 if (event_index >= 0 && response->request_acknowledge) {
3521 event = &ctrl_info->events[event_index];
3522 event->pending = true;
3523 event->event_type = response->event_type;
3524 event->event_id = response->event_id;
3525 event->additional_event_id = response->additional_event_id;
3526 if (event->event_type == PQI_EVENT_TYPE_OFA)
4fd22c13 3527 pqi_ofa_capture_event_payload(event, response);
6c223761
KB		 3528 }
3529
3530 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
3531 }
3532
3533 if (num_events) {
3534 event_queue->oq_ci_copy = oq_ci;
3535 writel(oq_ci, event_queue->oq_ci);
98f87667 3536 schedule_work(&ctrl_info->event_work);
6c223761
KB		 3537 }
3538
3539 return num_events;
3540}
3541
061ef06a
KB		 3542#define PQI_LEGACY_INTX_MASK 0x1
3543
583891c9 3544static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, bool enable_intx)
061ef06a
KB		 3545{
3546 u32 intx_mask;
3547 struct pqi_device_registers __iomem *pqi_registers;
3548 volatile void __iomem *register_addr;
3549
3550 pqi_registers = ctrl_info->pqi_registers;
3551
3552 if (enable_intx)
3553 register_addr = &pqi_registers->legacy_intx_mask_clear;
3554 else
3555 register_addr = &pqi_registers->legacy_intx_mask_set;
3556
3557 intx_mask = readl(register_addr);
3558 intx_mask |= PQI_LEGACY_INTX_MASK;
3559 writel(intx_mask, register_addr);
3560}
3561
3562static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3563 enum pqi_irq_mode new_mode)
3564{
3565 switch (ctrl_info->irq_mode) {
3566 case IRQ_MODE_MSIX:
3567 switch (new_mode) {
3568 case IRQ_MODE_MSIX:
3569 break;
3570 case IRQ_MODE_INTX:
3571 pqi_configure_legacy_intx(ctrl_info, true);
061ef06a
KB		 3572 sis_enable_intx(ctrl_info);
3573 break;
3574 case IRQ_MODE_NONE:
061ef06a
KB		 3575 break;
3576 }
3577 break;
3578 case IRQ_MODE_INTX:
3579 switch (new_mode) {
3580 case IRQ_MODE_MSIX:
3581 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3582 sis_enable_msix(ctrl_info);
3583 break;
3584 case IRQ_MODE_INTX:
3585 break;
3586 case IRQ_MODE_NONE:
3587 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3588 break;
3589 }
3590 break;
3591 case IRQ_MODE_NONE:
3592 switch (new_mode) {
3593 case IRQ_MODE_MSIX:
3594 sis_enable_msix(ctrl_info);
3595 break;
3596 case IRQ_MODE_INTX:
3597 pqi_configure_legacy_intx(ctrl_info, true);
3598 sis_enable_intx(ctrl_info);
3599 break;
3600 case IRQ_MODE_NONE:
3601 break;
3602 }
3603 break;
3604 }
3605
3606 ctrl_info->irq_mode = new_mode;
3607}
3608
3609#define PQI_LEGACY_INTX_PENDING 0x1
3610
3611static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3612{
3613 bool valid_irq;
3614 u32 intx_status;
3615
3616 switch (ctrl_info->irq_mode) {
3617 case IRQ_MODE_MSIX:
3618 valid_irq = true;
3619 break;
3620 case IRQ_MODE_INTX:
583891c9 3621 intx_status = readl(&ctrl_info->pqi_registers->legacy_intx_status);
061ef06a
KB		 3622 if (intx_status & PQI_LEGACY_INTX_PENDING)
3623 valid_irq = true;
3624 else
3625 valid_irq = false;
3626 break;
3627 case IRQ_MODE_NONE:
3628 default:
3629 valid_irq = false;
3630 break;
3631 }
3632
3633 return valid_irq;
3634}
3635
6c223761
KB		 3636static irqreturn_t pqi_irq_handler(int irq, void *data)
3637{
3638 struct pqi_ctrl_info *ctrl_info;
3639 struct pqi_queue_group *queue_group;
9e68cccc
KB		 3640 int num_io_responses_handled;
3641 int num_events_handled;
6c223761
KB		 3642
3643 queue_group = data;
3644 ctrl_info = queue_group->ctrl_info;
3645
061ef06a 3646 if (!pqi_is_valid_irq(ctrl_info))
6c223761
KB		 3647 return IRQ_NONE;
3648
9e68cccc
KB		 3649 num_io_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3650 if (num_io_responses_handled < 0)
3651 goto out;
6c223761 3652
9e68cccc
KB		 3653 if (irq == ctrl_info->event_irq) {
3654 num_events_handled = pqi_process_event_intr(ctrl_info);
3655 if (num_events_handled < 0)
3656 goto out;
3657 } else {
3658 num_events_handled = 0;
3659 }
6c223761 3660
9e68cccc 3661 if (num_io_responses_handled + num_events_handled > 0)
6c223761
KB		 3662 atomic_inc(&ctrl_info->num_interrupts);
3663
3664 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3665 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3666
9e68cccc 3667out:
6c223761
KB		 3668 return IRQ_HANDLED;
3669}
3670
3671static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3672{
d91d7820 3673 struct pci_dev *pci_dev = ctrl_info->pci_dev;
6c223761
KB		 3674 int i;
3675 int rc;
3676
d91d7820 3677 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
6c223761
KB		 3678
3679 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
d91d7820 3680 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
52198226 3681 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
6c223761 3682 if (rc) {
d91d7820 3683 dev_err(&pci_dev->dev,
6c223761 3684 "irq %u init failed with error %d\n",
d91d7820 3685 pci_irq_vector(pci_dev, i), rc);
6c223761
KB		 3686 return rc;
3687 }
3688 ctrl_info->num_msix_vectors_initialized++;
3689 }
3690
3691 return 0;
3692}
3693
98bf061b
KB		 3694static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3695{
3696 int i;
3697
3698 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3699 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3700 &ctrl_info->queue_groups[i]);
3701
3702 ctrl_info->num_msix_vectors_initialized = 0;
3703}
3704
6c223761
KB		 3705static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3706{
98bf061b 3707 int num_vectors_enabled;
6c223761 3708
98bf061b 3709 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
52198226
CH		 3710 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3711 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
98bf061b 3712 if (num_vectors_enabled < 0) {
6c223761 3713 dev_err(&ctrl_info->pci_dev->dev,
98bf061b
KB		 3714 "MSI-X init failed with error %d\n",
3715 num_vectors_enabled);
3716 return num_vectors_enabled;
6c223761
KB		 3717 }
3718
98bf061b 3719 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
061ef06a 3720 ctrl_info->irq_mode = IRQ_MODE_MSIX;
6c223761
KB		 3721 return 0;
3722}
3723
98bf061b
KB		 3724static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3725{
3726 if (ctrl_info->num_msix_vectors_enabled) {
3727 pci_free_irq_vectors(ctrl_info->pci_dev);
3728 ctrl_info->num_msix_vectors_enabled = 0;
3729 }
3730}
3731
6c223761
KB		 3732static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3733{
3734 unsigned int i;
3735 size_t alloc_length;
3736 size_t element_array_length_per_iq;
3737 size_t element_array_length_per_oq;
3738 void *element_array;
dac12fbc 3739 void __iomem *next_queue_index;
6c223761
KB		 3740 void *aligned_pointer;
3741 unsigned int num_inbound_queues;
3742 unsigned int num_outbound_queues;
3743 unsigned int num_queue_indexes;
3744 struct pqi_queue_group *queue_group;
3745
3746 element_array_length_per_iq =
3747 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3748 ctrl_info->num_elements_per_iq;
3749 element_array_length_per_oq =
3750 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3751 ctrl_info->num_elements_per_oq;
3752 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3753 num_outbound_queues = ctrl_info->num_queue_groups;
3754 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3755
3756 aligned_pointer = NULL;
3757
3758 for (i = 0; i < num_inbound_queues; i++) {
3759 aligned_pointer = PTR_ALIGN(aligned_pointer,
3760 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3761 aligned_pointer += element_array_length_per_iq;
3762 }
3763
3764 for (i = 0; i < num_outbound_queues; i++) {
3765 aligned_pointer = PTR_ALIGN(aligned_pointer,
3766 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3767 aligned_pointer += element_array_length_per_oq;
3768 }
3769
3770 aligned_pointer = PTR_ALIGN(aligned_pointer,
3771 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3772 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3773 PQI_EVENT_OQ_ELEMENT_LENGTH;
3774
3775 for (i = 0; i < num_queue_indexes; i++) {
3776 aligned_pointer = PTR_ALIGN(aligned_pointer,
3777 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3778 aligned_pointer += sizeof(pqi_index_t);
3779 }
3780
3781 alloc_length = (size_t)aligned_pointer +
3782 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3783
e1d213bd
KB		 3784 alloc_length += PQI_EXTRA_SGL_MEMORY;
3785
6c223761 3786 ctrl_info->queue_memory_base =
750afb08
LC		 3787 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
3788 &ctrl_info->queue_memory_base_dma_handle,
3789 GFP_KERNEL);
6c223761 3790
d87d5474 3791 if (!ctrl_info->queue_memory_base)
6c223761 3792 return -ENOMEM;
6c223761
KB		 3793
3794 ctrl_info->queue_memory_length = alloc_length;
3795
3796 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3797 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3798
3799 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3800 queue_group = &ctrl_info->queue_groups[i];
3801 queue_group->iq_element_array[RAID_PATH] = element_array;
3802 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3803 ctrl_info->queue_memory_base_dma_handle +
3804 (element_array - ctrl_info->queue_memory_base);
3805 element_array += element_array_length_per_iq;
3806 element_array = PTR_ALIGN(element_array,
3807 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3808 queue_group->iq_element_array[AIO_PATH] = element_array;
3809 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3810 ctrl_info->queue_memory_base_dma_handle +
3811 (element_array - ctrl_info->queue_memory_base);
3812 element_array += element_array_length_per_iq;
3813 element_array = PTR_ALIGN(element_array,
3814 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3815 }
3816
3817 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3818 queue_group = &ctrl_info->queue_groups[i];
3819 queue_group->oq_element_array = element_array;
3820 queue_group->oq_element_array_bus_addr =
3821 ctrl_info->queue_memory_base_dma_handle +
3822 (element_array - ctrl_info->queue_memory_base);
3823 element_array += element_array_length_per_oq;
3824 element_array = PTR_ALIGN(element_array,
3825 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3826 }
3827
3828 ctrl_info->event_queue.oq_element_array = element_array;
3829 ctrl_info->event_queue.oq_element_array_bus_addr =
3830 ctrl_info->queue_memory_base_dma_handle +
3831 (element_array - ctrl_info->queue_memory_base);
3832 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3833 PQI_EVENT_OQ_ELEMENT_LENGTH;
3834
dac12fbc 3835 next_queue_index = (void __iomem *)PTR_ALIGN(element_array,
6c223761
KB		 3836 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3837
3838 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3839 queue_group = &ctrl_info->queue_groups[i];
3840 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3841 queue_group->iq_ci_bus_addr[RAID_PATH] =
3842 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3843 (next_queue_index -
3844 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3845 next_queue_index += sizeof(pqi_index_t);
3846 next_queue_index = PTR_ALIGN(next_queue_index,
3847 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3848 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3849 queue_group->iq_ci_bus_addr[AIO_PATH] =
3850 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3851 (next_queue_index -
3852 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3853 next_queue_index += sizeof(pqi_index_t);
3854 next_queue_index = PTR_ALIGN(next_queue_index,
3855 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3856 queue_group->oq_pi = next_queue_index;
3857 queue_group->oq_pi_bus_addr =
3858 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3859 (next_queue_index -
3860 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3861 next_queue_index += sizeof(pqi_index_t);
3862 next_queue_index = PTR_ALIGN(next_queue_index,
3863 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3864 }
3865
3866 ctrl_info->event_queue.oq_pi = next_queue_index;
3867 ctrl_info->event_queue.oq_pi_bus_addr =
3868 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3869 (next_queue_index -
3870 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3871
3872 return 0;
3873}
3874
3875static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3876{
3877 unsigned int i;
3878 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3879 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3880
3881 /*
3882 * Initialize the backpointers to the controller structure in
3883 * each operational queue group structure.
3884 */
3885 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3886 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3887
3888 /*
3889 * Assign IDs to all operational queues. Note that the IDs
3890 * assigned to operational IQs are independent of the IDs
3891 * assigned to operational OQs.
3892 */
3893 ctrl_info->event_queue.oq_id = next_oq_id++;
3894 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3895 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3896 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3897 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3898 }
3899
3900 /*
3901 * Assign MSI-X table entry indexes to all queues. Note that the
3902 * interrupt for the event queue is shared with the first queue group.
3903 */
3904 ctrl_info->event_queue.int_msg_num = 0;
3905 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3906 ctrl_info->queue_groups[i].int_msg_num = i;
3907
3908 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3909 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3910 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3911 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3912 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3913 }
3914}
3915
3916static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3917{
3918 size_t alloc_length;
3919 struct pqi_admin_queues_aligned *admin_queues_aligned;
3920 struct pqi_admin_queues *admin_queues;
3921
3922 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3923 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3924
3925 ctrl_info->admin_queue_memory_base =
750afb08
LC		 3926 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
3927 &ctrl_info->admin_queue_memory_base_dma_handle,
3928 GFP_KERNEL);
6c223761
KB		 3929
3930 if (!ctrl_info->admin_queue_memory_base)
3931 return -ENOMEM;
3932
3933 ctrl_info->admin_queue_memory_length = alloc_length;
3934
3935 admin_queues = &ctrl_info->admin_queues;
3936 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3937 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3938 admin_queues->iq_element_array =
3939 &admin_queues_aligned->iq_element_array;
3940 admin_queues->oq_element_array =
3941 &admin_queues_aligned->oq_element_array;
583891c9
KB		 3942 admin_queues->iq_ci =
3943 (pqi_index_t __iomem *)&admin_queues_aligned->iq_ci;
dac12fbc
KB		 3944 admin_queues->oq_pi =
3945 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi;
6c223761
KB		 3946
3947 admin_queues->iq_element_array_bus_addr =
3948 ctrl_info->admin_queue_memory_base_dma_handle +
3949 (admin_queues->iq_element_array -
3950 ctrl_info->admin_queue_memory_base);
3951 admin_queues->oq_element_array_bus_addr =
3952 ctrl_info->admin_queue_memory_base_dma_handle +
3953 (admin_queues->oq_element_array -
3954 ctrl_info->admin_queue_memory_base);
3955 admin_queues->iq_ci_bus_addr =
3956 ctrl_info->admin_queue_memory_base_dma_handle +
583891c9
KB		 3957 ((void __iomem *)admin_queues->iq_ci -
3958 (void __iomem *)ctrl_info->admin_queue_memory_base);
6c223761
KB		 3959 admin_queues->oq_pi_bus_addr =
3960 ctrl_info->admin_queue_memory_base_dma_handle +
dac12fbc
KB		 3961 ((void __iomem *)admin_queues->oq_pi -
3962 (void __iomem *)ctrl_info->admin_queue_memory_base);
6c223761
KB		 3963
3964 return 0;
3965}
3966
4fd22c13 3967#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ
6c223761
KB		 3968#define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3969
3970static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3971{
3972 struct pqi_device_registers __iomem *pqi_registers;
3973 struct pqi_admin_queues *admin_queues;
3974 unsigned long timeout;
3975 u8 status;
3976 u32 reg;
3977
3978 pqi_registers = ctrl_info->pqi_registers;
3979 admin_queues = &ctrl_info->admin_queues;
3980
3981 writeq((u64)admin_queues->iq_element_array_bus_addr,
3982 &pqi_registers->admin_iq_element_array_addr);
3983 writeq((u64)admin_queues->oq_element_array_bus_addr,
3984 &pqi_registers->admin_oq_element_array_addr);
3985 writeq((u64)admin_queues->iq_ci_bus_addr,
3986 &pqi_registers->admin_iq_ci_addr);
3987 writeq((u64)admin_queues->oq_pi_bus_addr,
3988 &pqi_registers->admin_oq_pi_addr);
3989
3990 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
e655d469 3991 (PQI_ADMIN_OQ_NUM_ELEMENTS << 8) |
6c223761
KB		 3992 (admin_queues->int_msg_num << 16);
3993 writel(reg, &pqi_registers->admin_iq_num_elements);
583891c9 3994
6c223761
KB		 3995 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3996 &pqi_registers->function_and_status_code);
3997
3998 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3999 while (1) {
4000 status = readb(&pqi_registers->function_and_status_code);
4001 if (status == PQI_STATUS_IDLE)
4002 break;
4003 if (time_after(jiffies, timeout))
4004 return -ETIMEDOUT;
4005 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
4006 }
4007
4008 /*
4009 * The offset registers are not initialized to the correct
4010 * offsets until *after* the create admin queue pair command
4011 * completes successfully.
4012 */
4013 admin_queues->iq_pi = ctrl_info->iomem_base +
4014 PQI_DEVICE_REGISTERS_OFFSET +
4015 readq(&pqi_registers->admin_iq_pi_offset);
4016 admin_queues->oq_ci = ctrl_info->iomem_base +
4017 PQI_DEVICE_REGISTERS_OFFSET +
4018 readq(&pqi_registers->admin_oq_ci_offset);
4019
4020 return 0;
4021}
4022
4023static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
4024 struct pqi_general_admin_request *request)
4025{
4026 struct pqi_admin_queues *admin_queues;
4027 void *next_element;
4028 pqi_index_t iq_pi;
4029
4030 admin_queues = &ctrl_info->admin_queues;
4031 iq_pi = admin_queues->iq_pi_copy;
4032
4033 next_element = admin_queues->iq_element_array +
4034 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
4035
4036 memcpy(next_element, request, sizeof(*request));
4037
4038 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
4039 admin_queues->iq_pi_copy = iq_pi;
4040
4041 /*
4042 * This write notifies the controller that an IU is available to be
4043 * processed.
4044 */
4045 writel(iq_pi, admin_queues->iq_pi);
4046}
4047
13bede67
KB		 4048#define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
4049
6c223761
KB		 4050static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
4051 struct pqi_general_admin_response *response)
4052{
4053 struct pqi_admin_queues *admin_queues;
4054 pqi_index_t oq_pi;
4055 pqi_index_t oq_ci;
4056 unsigned long timeout;
4057
4058 admin_queues = &ctrl_info->admin_queues;
4059 oq_ci = admin_queues->oq_ci_copy;
4060
4fd22c13 4061 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761
KB		 4062
4063 while (1) {
dac12fbc 4064 oq_pi = readl(admin_queues->oq_pi);
6c223761
KB		 4065 if (oq_pi != oq_ci)
4066 break;
4067 if (time_after(jiffies, timeout)) {
4068 dev_err(&ctrl_info->pci_dev->dev,
4069 "timed out waiting for admin response\n");
4070 return -ETIMEDOUT;
4071 }
13bede67
KB		 4072 if (!sis_is_firmware_running(ctrl_info))
4073 return -ENXIO;
6c223761
KB		 4074 usleep_range(1000, 2000);
4075 }
4076
4077 memcpy(response, admin_queues->oq_element_array +
4078 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
4079
4080 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
4081 admin_queues->oq_ci_copy = oq_ci;
4082 writel(oq_ci, admin_queues->oq_ci);
4083
4084 return 0;
4085}
4086
4087static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
4088 struct pqi_queue_group *queue_group, enum pqi_io_path path,
4089 struct pqi_io_request *io_request)
4090{
4091 struct pqi_io_request *next;
4092 void *next_element;
4093 pqi_index_t iq_pi;
4094 pqi_index_t iq_ci;
4095 size_t iu_length;
4096 unsigned long flags;
4097 unsigned int num_elements_needed;
4098 unsigned int num_elements_to_end_of_queue;
4099 size_t copy_count;
4100 struct pqi_iu_header *request;
4101
4102 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
4103
376fb880
KB		 4104 if (io_request) {
4105 io_request->queue_group = queue_group;
6c223761
KB		 4106 list_add_tail(&io_request->request_list_entry,
4107 &queue_group->request_list[path]);
376fb880 4108 }
6c223761
KB		 4109
4110 iq_pi = queue_group->iq_pi_copy[path];
4111
4112 list_for_each_entry_safe(io_request, next,
4113 &queue_group->request_list[path], request_list_entry) {
4114
4115 request = io_request->iu;
4116
4117 iu_length = get_unaligned_le16(&request->iu_length) +
4118 PQI_REQUEST_HEADER_LENGTH;
4119 num_elements_needed =
4120 DIV_ROUND_UP(iu_length,
4121 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4122
dac12fbc 4123 iq_ci = readl(queue_group->iq_ci[path]);
6c223761
KB		 4124
4125 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
4126 ctrl_info->num_elements_per_iq))
4127 break;
4128
4129 put_unaligned_le16(queue_group->oq_id,
4130 &request->response_queue_id);
4131
4132 next_element = queue_group->iq_element_array[path] +
4133 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4134
4135 num_elements_to_end_of_queue =
4136 ctrl_info->num_elements_per_iq - iq_pi;
4137
4138 if (num_elements_needed <= num_elements_to_end_of_queue) {
4139 memcpy(next_element, request, iu_length);
4140 } else {
4141 copy_count = num_elements_to_end_of_queue *
4142 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
4143 memcpy(next_element, request, copy_count);
4144 memcpy(queue_group->iq_element_array[path],
4145 (u8 *)request + copy_count,
4146 iu_length - copy_count);
4147 }
4148
4149 iq_pi = (iq_pi + num_elements_needed) %
4150 ctrl_info->num_elements_per_iq;
4151
4152 list_del(&io_request->request_list_entry);
4153 }
4154
4155 if (iq_pi != queue_group->iq_pi_copy[path]) {
4156 queue_group->iq_pi_copy[path] = iq_pi;
4157 /*
4158 * This write notifies the controller that one or more IUs are
4159 * available to be processed.
4160 */
4161 writel(iq_pi, queue_group->iq_pi[path]);
4162 }
4163
4164 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
4165}
4166
1f37e992
KB		 4167#define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
4168
4169static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
4170 struct completion *wait)
4171{
4172 int rc;
1f37e992
KB		 4173
4174 while (1) {
4175 if (wait_for_completion_io_timeout(wait,
4fd22c13 4176 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) {
1f37e992
KB		 4177 rc = 0;
4178 break;
4179 }
4180
4181 pqi_check_ctrl_health(ctrl_info);
4182 if (pqi_ctrl_offline(ctrl_info)) {
4183 rc = -ENXIO;
4184 break;
4185 }
1f37e992
KB		 4186 }
4187
4188 return rc;
4189}
4190
6c223761
KB		 4191static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
4192 void *context)
4193{
4194 struct completion *waiting = context;
4195
4196 complete(waiting);
4197}
4198
694c5d5b
KB		 4199static int pqi_process_raid_io_error_synchronous(
4200 struct pqi_raid_error_info *error_info)
26b390ab
KB		 4201{
4202 int rc = -EIO;
4203
4204 switch (error_info->data_out_result) {
4205 case PQI_DATA_IN_OUT_GOOD:
4206 if (error_info->status == SAM_STAT_GOOD)
4207 rc = 0;
4208 break;
4209 case PQI_DATA_IN_OUT_UNDERFLOW:
4210 if (error_info->status == SAM_STAT_GOOD ||
4211 error_info->status == SAM_STAT_CHECK_CONDITION)
4212 rc = 0;
4213 break;
4214 case PQI_DATA_IN_OUT_ABORTED:
4215 rc = PQI_CMD_STATUS_ABORTED;
4216 break;
4217 }
4218
4219 return rc;
4220}
4221
6c223761
KB		 4222static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
4223 struct pqi_iu_header *request, unsigned int flags,
4224 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
4225{
957c5ab1 4226 int rc = 0;
6c223761
KB		 4227 struct pqi_io_request *io_request;
4228 unsigned long start_jiffies;
4229 unsigned long msecs_blocked;
4230 size_t iu_length;
957c5ab1 4231 DECLARE_COMPLETION_ONSTACK(wait);
6c223761
KB		 4232
4233 /*
4234 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
4235 * are mutually exclusive.
4236 */
4237
4238 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
4239 if (down_interruptible(&ctrl_info->sync_request_sem))
4240 return -ERESTARTSYS;
4241 } else {
4242 if (timeout_msecs == NO_TIMEOUT) {
4243 down(&ctrl_info->sync_request_sem);
4244 } else {
4245 start_jiffies = jiffies;
4246 if (down_timeout(&ctrl_info->sync_request_sem,
4247 msecs_to_jiffies(timeout_msecs)))
4248 return -ETIMEDOUT;
4249 msecs_blocked =
4250 jiffies_to_msecs(jiffies - start_jiffies);
cc8f5260
DC		 4251 if (msecs_blocked >= timeout_msecs) {
4252 rc = -ETIMEDOUT;
4253 goto out;
4254 }
6c223761
KB		 4255 timeout_msecs -= msecs_blocked;
4256 }
4257 }
4258
7561a7e4
KB		 4259 pqi_ctrl_busy(ctrl_info);
4260 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
4261 if (timeout_msecs == 0) {
957c5ab1 4262 pqi_ctrl_unbusy(ctrl_info);
7561a7e4
KB		 4263 rc = -ETIMEDOUT;
4264 goto out;
4265 }
4266
376fb880 4267 if (pqi_ctrl_offline(ctrl_info)) {
957c5ab1 4268 pqi_ctrl_unbusy(ctrl_info);
376fb880
KB		 4269 rc = -ENXIO;
4270 goto out;
4271 }
4272
0530736e
KB		 4273 atomic_inc(&ctrl_info->sync_cmds_outstanding);
4274
6c223761
KB		 4275 io_request = pqi_alloc_io_request(ctrl_info);
4276
4277 put_unaligned_le16(io_request->index,
4278 &(((struct pqi_raid_path_request *)request)->request_id));
4279
4280 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
4281 ((struct pqi_raid_path_request *)request)->error_index =
4282 ((struct pqi_raid_path_request *)request)->request_id;
4283
4284 iu_length = get_unaligned_le16(&request->iu_length) +
4285 PQI_REQUEST_HEADER_LENGTH;
4286 memcpy(io_request->iu, request, iu_length);
4287
957c5ab1
KB		 4288 io_request->io_complete_callback = pqi_raid_synchronous_complete;
4289 io_request->context = &wait;
4290
583891c9 4291 pqi_start_io(ctrl_info, &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
957c5ab1
KB		 4292 io_request);
4293
4294 pqi_ctrl_unbusy(ctrl_info);
4295
4296 if (timeout_msecs == NO_TIMEOUT) {
4297 pqi_wait_for_completion_io(ctrl_info, &wait);
4298 } else {
4299 if (!wait_for_completion_io_timeout(&wait,
4300 msecs_to_jiffies(timeout_msecs))) {
4301 dev_warn(&ctrl_info->pci_dev->dev,
4302 "command timed out\n");
4303 rc = -ETIMEDOUT;
4304 }
4305 }
6c223761
KB		 4306
4307 if (error_info) {
4308 if (io_request->error_info)
583891c9 4309 memcpy(error_info, io_request->error_info, sizeof(*error_info));
6c223761
KB		 4310 else
4311 memset(error_info, 0, sizeof(*error_info));
4312 } else if (rc == 0 && io_request->error_info) {
583891c9 4313 rc = pqi_process_raid_io_error_synchronous(io_request->error_info);
6c223761
KB		 4314 }
4315
4316 pqi_free_io_request(io_request);
4317
0530736e 4318 atomic_dec(&ctrl_info->sync_cmds_outstanding);
7561a7e4 4319out:
6c223761
KB		 4320 up(&ctrl_info->sync_request_sem);
4321
4322 return rc;
4323}
4324
4325static int pqi_validate_admin_response(
4326 struct pqi_general_admin_response *response, u8 expected_function_code)
4327{
4328 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
4329 return -EINVAL;
4330
4331 if (get_unaligned_le16(&response->header.iu_length) !=
4332 PQI_GENERAL_ADMIN_IU_LENGTH)
4333 return -EINVAL;
4334
4335 if (response->function_code != expected_function_code)
4336 return -EINVAL;
4337
4338 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
4339 return -EINVAL;
4340
4341 return 0;
4342}
4343
4344static int pqi_submit_admin_request_synchronous(
4345 struct pqi_ctrl_info *ctrl_info,
4346 struct pqi_general_admin_request *request,
4347 struct pqi_general_admin_response *response)
4348{
4349 int rc;
4350
4351 pqi_submit_admin_request(ctrl_info, request);
4352
4353 rc = pqi_poll_for_admin_response(ctrl_info, response);
4354
4355 if (rc == 0)
4356 rc = pqi_validate_admin_response(response,
4357 request->function_code);
4358
4359 return rc;
4360}
4361
4362static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
4363{
4364 int rc;
4365 struct pqi_general_admin_request request;
4366 struct pqi_general_admin_response response;
4367 struct pqi_device_capability *capability;
4368 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
4369
4370 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
4371 if (!capability)
4372 return -ENOMEM;
4373
4374 memset(&request, 0, sizeof(request));
4375
4376 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4377 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4378 &request.header.iu_length);
4379 request.function_code =
4380 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
4381 put_unaligned_le32(sizeof(*capability),
4382 &request.data.report_device_capability.buffer_length);
4383
4384 rc = pqi_map_single(ctrl_info->pci_dev,
4385 &request.data.report_device_capability.sg_descriptor,
4386 capability, sizeof(*capability),
6917a9cc 4387 DMA_FROM_DEVICE);
6c223761
KB		 4388 if (rc)
4389 goto out;
4390
583891c9 4391 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, &response);
6c223761
KB		 4392
4393 pqi_pci_unmap(ctrl_info->pci_dev,
4394 &request.data.report_device_capability.sg_descriptor, 1,
6917a9cc 4395 DMA_FROM_DEVICE);
6c223761
KB		 4396
4397 if (rc)
4398 goto out;
4399
4400 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
4401 rc = -EIO;
4402 goto out;
4403 }
4404
4405 ctrl_info->max_inbound_queues =
4406 get_unaligned_le16(&capability->max_inbound_queues);
4407 ctrl_info->max_elements_per_iq =
4408 get_unaligned_le16(&capability->max_elements_per_iq);
4409 ctrl_info->max_iq_element_length =
4410 get_unaligned_le16(&capability->max_iq_element_length)
4411 * 16;
4412 ctrl_info->max_outbound_queues =
4413 get_unaligned_le16(&capability->max_outbound_queues);
4414 ctrl_info->max_elements_per_oq =
4415 get_unaligned_le16(&capability->max_elements_per_oq);
4416 ctrl_info->max_oq_element_length =
4417 get_unaligned_le16(&capability->max_oq_element_length)
4418 * 16;
4419
4420 sop_iu_layer_descriptor =
4421 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
4422
4423 ctrl_info->max_inbound_iu_length_per_firmware =
4424 get_unaligned_le16(
4425 &sop_iu_layer_descriptor->max_inbound_iu_length);
4426 ctrl_info->inbound_spanning_supported =
4427 sop_iu_layer_descriptor->inbound_spanning_supported;
4428 ctrl_info->outbound_spanning_supported =
4429 sop_iu_layer_descriptor->outbound_spanning_supported;
4430
4431out:
4432 kfree(capability);
4433
4434 return rc;
4435}
4436
4437static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
4438{
4439 if (ctrl_info->max_iq_element_length <
4440 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4441 dev_err(&ctrl_info->pci_dev->dev,
4442 "max. inbound queue element length of %d is less than the required length of %d\n",
4443 ctrl_info->max_iq_element_length,
4444 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4445 return -EINVAL;
4446 }
4447
4448 if (ctrl_info->max_oq_element_length <
4449 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
4450 dev_err(&ctrl_info->pci_dev->dev,
4451 "max. outbound queue element length of %d is less than the required length of %d\n",
4452 ctrl_info->max_oq_element_length,
4453 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
4454 return -EINVAL;
4455 }
4456
4457 if (ctrl_info->max_inbound_iu_length_per_firmware <
4458 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4459 dev_err(&ctrl_info->pci_dev->dev,
4460 "max. inbound IU length of %u is less than the min. required length of %d\n",
4461 ctrl_info->max_inbound_iu_length_per_firmware,
4462 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4463 return -EINVAL;
4464 }
4465
77668f41
KB		 4466 if (!ctrl_info->inbound_spanning_supported) {
4467 dev_err(&ctrl_info->pci_dev->dev,
4468 "the controller does not support inbound spanning\n");
4469 return -EINVAL;
4470 }
4471
4472 if (ctrl_info->outbound_spanning_supported) {
4473 dev_err(&ctrl_info->pci_dev->dev,
4474 "the controller supports outbound spanning but this driver does not\n");
4475 return -EINVAL;
4476 }
4477
6c223761
KB		 4478 return 0;
4479}
4480
6c223761
KB		 4481static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
4482{
4483 int rc;
4484 struct pqi_event_queue *event_queue;
4485 struct pqi_general_admin_request request;
4486 struct pqi_general_admin_response response;
4487
4488 event_queue = &ctrl_info->event_queue;
4489
4490 /*
4491 * Create OQ (Outbound Queue - device to host queue) to dedicate
4492 * to events.
4493 */
4494 memset(&request, 0, sizeof(request));
4495 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4496 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4497 &request.header.iu_length);
4498 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4499 put_unaligned_le16(event_queue->oq_id,
4500 &request.data.create_operational_oq.queue_id);
4501 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
4502 &request.data.create_operational_oq.element_array_addr);
4503 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
4504 &request.data.create_operational_oq.pi_addr);
4505 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
4506 &request.data.create_operational_oq.num_elements);
4507 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
4508 &request.data.create_operational_oq.element_length);
4509 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4510 put_unaligned_le16(event_queue->int_msg_num,
4511 &request.data.create_operational_oq.int_msg_num);
4512
4513 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4514 &response);
4515 if (rc)
4516 return rc;
4517
4518 event_queue->oq_ci = ctrl_info->iomem_base +
4519 PQI_DEVICE_REGISTERS_OFFSET +
4520 get_unaligned_le64(
4521 &response.data.create_operational_oq.oq_ci_offset);
4522
4523 return 0;
4524}
4525
061ef06a
KB		 4526static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
4527 unsigned int group_number)
6c223761 4528{
6c223761
KB		 4529 int rc;
4530 struct pqi_queue_group *queue_group;
4531 struct pqi_general_admin_request request;
4532 struct pqi_general_admin_response response;
4533
061ef06a 4534 queue_group = &ctrl_info->queue_groups[group_number];
6c223761
KB		 4535
4536 /*
4537 * Create IQ (Inbound Queue - host to device queue) for
4538 * RAID path.
4539 */
4540 memset(&request, 0, sizeof(request));
4541 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4542 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4543 &request.header.iu_length);
4544 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4545 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
4546 &request.data.create_operational_iq.queue_id);
4547 put_unaligned_le64(
4548 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
4549 &request.data.create_operational_iq.element_array_addr);
4550 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
4551 &request.data.create_operational_iq.ci_addr);
4552 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4553 &request.data.create_operational_iq.num_elements);
4554 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4555 &request.data.create_operational_iq.element_length);
4556 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4557
4558 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4559 &response);
4560 if (rc) {
4561 dev_err(&ctrl_info->pci_dev->dev,
4562 "error creating inbound RAID queue\n");
4563 return rc;
4564 }
4565
4566 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
4567 PQI_DEVICE_REGISTERS_OFFSET +
4568 get_unaligned_le64(
4569 &response.data.create_operational_iq.iq_pi_offset);
4570
4571 /*
4572 * Create IQ (Inbound Queue - host to device queue) for
4573 * Advanced I/O (AIO) path.
4574 */
4575 memset(&request, 0, sizeof(request));
4576 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4577 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4578 &request.header.iu_length);
4579 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4580 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4581 &request.data.create_operational_iq.queue_id);
4582 put_unaligned_le64((u64)queue_group->
4583 iq_element_array_bus_addr[AIO_PATH],
4584 &request.data.create_operational_iq.element_array_addr);
4585 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4586 &request.data.create_operational_iq.ci_addr);
4587 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4588 &request.data.create_operational_iq.num_elements);
4589 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4590 &request.data.create_operational_iq.element_length);
4591 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4592
4593 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4594 &response);
4595 if (rc) {
4596 dev_err(&ctrl_info->pci_dev->dev,
4597 "error creating inbound AIO queue\n");
339faa81 4598 return rc;
6c223761
KB		 4599 }
4600
4601 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4602 PQI_DEVICE_REGISTERS_OFFSET +
4603 get_unaligned_le64(
4604 &response.data.create_operational_iq.iq_pi_offset);
4605
4606 /*
4607 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4608 * assumed to be for RAID path I/O unless we change the queue's
4609 * property.
4610 */
4611 memset(&request, 0, sizeof(request));
4612 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4613 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4614 &request.header.iu_length);
4615 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4616 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4617 &request.data.change_operational_iq_properties.queue_id);
4618 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4619 &request.data.change_operational_iq_properties.vendor_specific);
4620
4621 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4622 &response);
4623 if (rc) {
4624 dev_err(&ctrl_info->pci_dev->dev,
4625 "error changing queue property\n");
339faa81 4626 return rc;
6c223761
KB		 4627 }
4628
4629 /*
4630 * Create OQ (Outbound Queue - device to host queue).
4631 */
4632 memset(&request, 0, sizeof(request));
4633 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4634 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4635 &request.header.iu_length);
4636 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4637 put_unaligned_le16(queue_group->oq_id,
4638 &request.data.create_operational_oq.queue_id);
4639 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4640 &request.data.create_operational_oq.element_array_addr);
4641 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4642 &request.data.create_operational_oq.pi_addr);
4643 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4644 &request.data.create_operational_oq.num_elements);
4645 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4646 &request.data.create_operational_oq.element_length);
4647 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4648 put_unaligned_le16(queue_group->int_msg_num,
4649 &request.data.create_operational_oq.int_msg_num);
4650
4651 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4652 &response);
4653 if (rc) {
4654 dev_err(&ctrl_info->pci_dev->dev,
4655 "error creating outbound queue\n");
339faa81 4656 return rc;
6c223761
KB		 4657 }
4658
4659 queue_group->oq_ci = ctrl_info->iomem_base +
4660 PQI_DEVICE_REGISTERS_OFFSET +
4661 get_unaligned_le64(
4662 &response.data.create_operational_oq.oq_ci_offset);
4663
6c223761 4664 return 0;
6c223761
KB		 4665}
4666
4667static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4668{
4669 int rc;
4670 unsigned int i;
4671
4672 rc = pqi_create_event_queue(ctrl_info);
4673 if (rc) {
4674 dev_err(&ctrl_info->pci_dev->dev,
4675 "error creating event queue\n");
4676 return rc;
4677 }
4678
4679 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
061ef06a 4680 rc = pqi_create_queue_group(ctrl_info, i);
6c223761
KB		 4681 if (rc) {
4682 dev_err(&ctrl_info->pci_dev->dev,
4683 "error creating queue group number %u/%u\n",
4684 i, ctrl_info->num_queue_groups);
4685 return rc;
4686 }
4687 }
4688
4689 return 0;
4690}
4691
4692#define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4693 (offsetof(struct pqi_event_config, descriptors) + \
4694 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4695
6a50d6ad
KB		 4696static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4697 bool enable_events)
6c223761
KB		 4698{
4699 int rc;
4700 unsigned int i;
4701 struct pqi_event_config *event_config;
6a50d6ad 4702 struct pqi_event_descriptor *event_descriptor;
6c223761
KB		 4703 struct pqi_general_management_request request;
4704
4705 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4706 GFP_KERNEL);
4707 if (!event_config)
4708 return -ENOMEM;
4709
4710 memset(&request, 0, sizeof(request));
4711
4712 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4713 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4714 data.report_event_configuration.sg_descriptors[1]) -
4715 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4716 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4717 &request.data.report_event_configuration.buffer_length);
4718
4719 rc = pqi_map_single(ctrl_info->pci_dev,
4720 request.data.report_event_configuration.sg_descriptors,
4721 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
6917a9cc 4722 DMA_FROM_DEVICE);
6c223761
KB		 4723 if (rc)
4724 goto out;
4725
4726 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4727 0, NULL, NO_TIMEOUT);
4728
4729 pqi_pci_unmap(ctrl_info->pci_dev,
4730 request.data.report_event_configuration.sg_descriptors, 1,
6917a9cc 4731 DMA_FROM_DEVICE);
6c223761
KB		 4732
4733 if (rc)
4734 goto out;
4735
6a50d6ad
KB		 4736 for (i = 0; i < event_config->num_event_descriptors; i++) {
4737 event_descriptor = &event_config->descriptors[i];
4738 if (enable_events &&
4739 pqi_is_supported_event(event_descriptor->event_type))
583891c9 4740 put_unaligned_le16(ctrl_info->event_queue.oq_id,
6a50d6ad
KB		 4741 &event_descriptor->oq_id);
4742 else
4743 put_unaligned_le16(0, &event_descriptor->oq_id);
4744 }
6c223761
KB		 4745
4746 memset(&request, 0, sizeof(request));
4747
4748 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4749 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4750 data.report_event_configuration.sg_descriptors[1]) -
4751 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4752 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4753 &request.data.report_event_configuration.buffer_length);
4754
4755 rc = pqi_map_single(ctrl_info->pci_dev,
4756 request.data.report_event_configuration.sg_descriptors,
4757 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
6917a9cc 4758 DMA_TO_DEVICE);
6c223761
KB		 4759 if (rc)
4760 goto out;
4761
4762 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4763 NULL, NO_TIMEOUT);
4764
4765 pqi_pci_unmap(ctrl_info->pci_dev,
4766 request.data.report_event_configuration.sg_descriptors, 1,
6917a9cc 4767 DMA_TO_DEVICE);
6c223761
KB		 4768
4769out:
4770 kfree(event_config);
4771
4772 return rc;
4773}
4774
6a50d6ad
KB		 4775static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4776{
4777 return pqi_configure_events(ctrl_info, true);
4778}
4779
4780static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4781{
4782 return pqi_configure_events(ctrl_info, false);
4783}
4784
6c223761
KB		 4785static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4786{
4787 unsigned int i;
4788 struct device *dev;
4789 size_t sg_chain_buffer_length;
4790 struct pqi_io_request *io_request;
4791
4792 if (!ctrl_info->io_request_pool)
4793 return;
4794
4795 dev = &ctrl_info->pci_dev->dev;
4796 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4797 io_request = ctrl_info->io_request_pool;
4798
4799 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4800 kfree(io_request->iu);
4801 if (!io_request->sg_chain_buffer)
4802 break;
4803 dma_free_coherent(dev, sg_chain_buffer_length,
4804 io_request->sg_chain_buffer,
4805 io_request->sg_chain_buffer_dma_handle);
4806 io_request++;
4807 }
4808
4809 kfree(ctrl_info->io_request_pool);
4810 ctrl_info->io_request_pool = NULL;
4811}
4812
4813static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4814{
694c5d5b
KB		 4815 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev,
4816 ctrl_info->error_buffer_length,
4817 &ctrl_info->error_buffer_dma_handle,
4818 GFP_KERNEL);
6c223761
KB		 4819 if (!ctrl_info->error_buffer)
4820 return -ENOMEM;
4821
4822 return 0;
4823}
4824
4825static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4826{
4827 unsigned int i;
4828 void *sg_chain_buffer;
4829 size_t sg_chain_buffer_length;
4830 dma_addr_t sg_chain_buffer_dma_handle;
4831 struct device *dev;
4832 struct pqi_io_request *io_request;
4833
583891c9
KB		 4834 ctrl_info->io_request_pool = kcalloc(ctrl_info->max_io_slots,
4835 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
6c223761
KB		 4836
4837 if (!ctrl_info->io_request_pool) {
4838 dev_err(&ctrl_info->pci_dev->dev,
4839 "failed to allocate I/O request pool\n");
4840 goto error;
4841 }
4842
4843 dev = &ctrl_info->pci_dev->dev;
4844 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4845 io_request = ctrl_info->io_request_pool;
4846
4847 for (i = 0; i < ctrl_info->max_io_slots; i++) {
583891c9 4848 io_request->iu = kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
6c223761
KB		 4849
4850 if (!io_request->iu) {
4851 dev_err(&ctrl_info->pci_dev->dev,
4852 "failed to allocate IU buffers\n");
4853 goto error;
4854 }
4855
4856 sg_chain_buffer = dma_alloc_coherent(dev,
4857 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4858 GFP_KERNEL);
4859
4860 if (!sg_chain_buffer) {
4861 dev_err(&ctrl_info->pci_dev->dev,
4862 "failed to allocate PQI scatter-gather chain buffers\n");
4863 goto error;
4864 }
4865
4866 io_request->index = i;
4867 io_request->sg_chain_buffer = sg_chain_buffer;
583891c9 4868 io_request->sg_chain_buffer_dma_handle = sg_chain_buffer_dma_handle;
6c223761
KB		 4869 io_request++;
4870 }
4871
4872 return 0;
4873
4874error:
4875 pqi_free_all_io_requests(ctrl_info);
4876
4877 return -ENOMEM;
4878}
4879
4880/*
4881 * Calculate required resources that are sized based on max. outstanding
4882 * requests and max. transfer size.
4883 */
4884
4885static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4886{
4887 u32 max_transfer_size;
4888 u32 max_sg_entries;
4889
4890 ctrl_info->scsi_ml_can_queue =
4891 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4892 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4893
4894 ctrl_info->error_buffer_length =
4895 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4896
d727a776
KB		 4897 if (reset_devices)
4898 max_transfer_size = min(ctrl_info->max_transfer_size,
4899 PQI_MAX_TRANSFER_SIZE_KDUMP);
4900 else
4901 max_transfer_size = min(ctrl_info->max_transfer_size,
4902 PQI_MAX_TRANSFER_SIZE);
6c223761
KB		 4903
4904 max_sg_entries = max_transfer_size / PAGE_SIZE;
4905
4906 /* +1 to cover when the buffer is not page-aligned. */
4907 max_sg_entries++;
4908
4909 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4910
4911 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4912
4913 ctrl_info->sg_chain_buffer_length =
e1d213bd
KB		 4914 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4915 PQI_EXTRA_SGL_MEMORY;
6c223761
KB		 4916 ctrl_info->sg_tablesize = max_sg_entries;
4917 ctrl_info->max_sectors = max_transfer_size / 512;
4918}
4919
4920static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4921{
6c223761
KB		 4922 int num_queue_groups;
4923 u16 num_elements_per_iq;
4924 u16 num_elements_per_oq;
4925
d727a776
KB		 4926 if (reset_devices) {
4927 num_queue_groups = 1;
4928 } else {
4929 int num_cpus;
4930 int max_queue_groups;
4931
4932 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4933 ctrl_info->max_outbound_queues - 1);
4934 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
6c223761 4935
d727a776
KB		 4936 num_cpus = num_online_cpus();
4937 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4938 num_queue_groups = min(num_queue_groups, max_queue_groups);
4939 }
6c223761
KB		 4940
4941 ctrl_info->num_queue_groups = num_queue_groups;
061ef06a 4942 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
6c223761 4943
77668f41
KB		 4944 /*
4945 * Make sure that the max. inbound IU length is an even multiple
4946 * of our inbound element length.
4947 */
4948 ctrl_info->max_inbound_iu_length =
4949 (ctrl_info->max_inbound_iu_length_per_firmware /
4950 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4951 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
6c223761
KB		 4952
4953 num_elements_per_iq =
4954 (ctrl_info->max_inbound_iu_length /
4955 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4956
4957 /* Add one because one element in each queue is unusable. */
4958 num_elements_per_iq++;
4959
4960 num_elements_per_iq = min(num_elements_per_iq,
4961 ctrl_info->max_elements_per_iq);
4962
4963 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4964 num_elements_per_oq = min(num_elements_per_oq,
4965 ctrl_info->max_elements_per_oq);
4966
4967 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4968 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4969
4970 ctrl_info->max_sg_per_iu =
4971 ((ctrl_info->max_inbound_iu_length -
4972 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4973 sizeof(struct pqi_sg_descriptor)) +
4974 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
6702d2c4
DB		 4975
4976 ctrl_info->max_sg_per_r56_iu =
4977 ((ctrl_info->max_inbound_iu_length -
4978 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4979 sizeof(struct pqi_sg_descriptor)) +
4980 PQI_MAX_EMBEDDED_R56_SG_DESCRIPTORS;
6c223761
KB		 4981}
4982
583891c9
KB		 4983static inline void pqi_set_sg_descriptor(struct pqi_sg_descriptor *sg_descriptor,
4984 struct scatterlist *sg)
6c223761
KB		 4985{
4986 u64 address = (u64)sg_dma_address(sg);
4987 unsigned int length = sg_dma_len(sg);
4988
4989 put_unaligned_le64(address, &sg_descriptor->address);
4990 put_unaligned_le32(length, &sg_descriptor->length);
4991 put_unaligned_le32(0, &sg_descriptor->flags);
4992}
4993
1a22bc4b
DB		 4994static unsigned int pqi_build_sg_list(struct pqi_sg_descriptor *sg_descriptor,
4995 struct scatterlist *sg, int sg_count, struct pqi_io_request *io_request,
4996 int max_sg_per_iu, bool *chained)
4997{
4998 int i;
4999 unsigned int num_sg_in_iu;
5000
5001 *chained = false;
5002 i = 0;
5003 num_sg_in_iu = 0;
5004 max_sg_per_iu--; /* Subtract 1 to leave room for chain marker. */
5005
5006 while (1) {
5007 pqi_set_sg_descriptor(sg_descriptor, sg);
5008 if (!*chained)
5009 num_sg_in_iu++;
5010 i++;
5011 if (i == sg_count)
5012 break;
5013 sg_descriptor++;
5014 if (i == max_sg_per_iu) {
5015 put_unaligned_le64((u64)io_request->sg_chain_buffer_dma_handle,
5016 &sg_descriptor->address);
5017 put_unaligned_le32((sg_count - num_sg_in_iu) * sizeof(*sg_descriptor),
5018 &sg_descriptor->length);
5019 put_unaligned_le32(CISS_SG_CHAIN, &sg_descriptor->flags);
5020 *chained = true;
5021 num_sg_in_iu++;
5022 sg_descriptor = io_request->sg_chain_buffer;
5023 }
5024 sg = sg_next(sg);
5025 }
5026
5027 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
5028
5029 return num_sg_in_iu;
5030}
5031
6c223761
KB		 5032static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
5033 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
5034 struct pqi_io_request *io_request)
5035{
6c223761
KB		 5036 u16 iu_length;
5037 int sg_count;
5038 bool chained;
5039 unsigned int num_sg_in_iu;
6c223761
KB		 5040 struct scatterlist *sg;
5041 struct pqi_sg_descriptor *sg_descriptor;
5042
5043 sg_count = scsi_dma_map(scmd);
5044 if (sg_count < 0)
5045 return sg_count;
5046
5047 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
5048 PQI_REQUEST_HEADER_LENGTH;
5049
5050 if (sg_count == 0)
5051 goto out;
5052
5053 sg = scsi_sglist(scmd);
5054 sg_descriptor = request->sg_descriptors;
6c223761 5055
1a22bc4b
DB		 5056 num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
5057 ctrl_info->max_sg_per_iu, &chained);
6c223761 5058
6c223761
KB		 5059 request->partial = chained;
5060 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
5061
5062out:
5063 put_unaligned_le16(iu_length, &request->header.iu_length);
5064
5065 return 0;
5066}
5067
7a012c23
DB		 5068static int pqi_build_aio_r1_sg_list(struct pqi_ctrl_info *ctrl_info,
5069 struct pqi_aio_r1_path_request *request, struct scsi_cmnd *scmd,
5070 struct pqi_io_request *io_request)
5071{
5072 u16 iu_length;
5073 int sg_count;
5074 bool chained;
5075 unsigned int num_sg_in_iu;
5076 struct scatterlist *sg;
5077 struct pqi_sg_descriptor *sg_descriptor;
5078
5079 sg_count = scsi_dma_map(scmd);
5080 if (sg_count < 0)
5081 return sg_count;
5082
5083 iu_length = offsetof(struct pqi_aio_r1_path_request, sg_descriptors) -
5084 PQI_REQUEST_HEADER_LENGTH;
5085 num_sg_in_iu = 0;
5086
5087 if (sg_count == 0)
5088 goto out;
5089
5090 sg = scsi_sglist(scmd);
5091 sg_descriptor = request->sg_descriptors;
5092
5093 num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
5094 ctrl_info->max_sg_per_iu, &chained);
5095
5096 request->partial = chained;
5097 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
5098
5099out:
5100 put_unaligned_le16(iu_length, &request->header.iu_length);
5101 request->num_sg_descriptors = num_sg_in_iu;
5102
5103 return 0;
5104}
5105
6702d2c4
DB		 5106static int pqi_build_aio_r56_sg_list(struct pqi_ctrl_info *ctrl_info,
5107 struct pqi_aio_r56_path_request *request, struct scsi_cmnd *scmd,
5108 struct pqi_io_request *io_request)
5109{
5110 u16 iu_length;
5111 int sg_count;
5112 bool chained;
5113 unsigned int num_sg_in_iu;
5114 struct scatterlist *sg;
5115 struct pqi_sg_descriptor *sg_descriptor;
5116
5117 sg_count = scsi_dma_map(scmd);
5118 if (sg_count < 0)
5119 return sg_count;
5120
5121 iu_length = offsetof(struct pqi_aio_r56_path_request, sg_descriptors) -
5122 PQI_REQUEST_HEADER_LENGTH;
5123 num_sg_in_iu = 0;
5124
5125 if (sg_count != 0) {
5126 sg = scsi_sglist(scmd);
5127 sg_descriptor = request->sg_descriptors;
5128
5129 num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
5130 ctrl_info->max_sg_per_r56_iu, &chained);
5131
5132 request->partial = chained;
5133 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
5134 }
5135
5136 put_unaligned_le16(iu_length, &request->header.iu_length);
5137 request->num_sg_descriptors = num_sg_in_iu;
5138
5139 return 0;
5140}
5141
6c223761
KB		 5142static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
5143 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
5144 struct pqi_io_request *io_request)
5145{
6c223761
KB		 5146 u16 iu_length;
5147 int sg_count;
a60eec02
KB		 5148 bool chained;
5149 unsigned int num_sg_in_iu;
6c223761
KB		 5150 struct scatterlist *sg;
5151 struct pqi_sg_descriptor *sg_descriptor;
5152
5153 sg_count = scsi_dma_map(scmd);
5154 if (sg_count < 0)
5155 return sg_count;
a60eec02
KB		 5156
5157 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
5158 PQI_REQUEST_HEADER_LENGTH;
5159 num_sg_in_iu = 0;
5160
6c223761
KB		 5161 if (sg_count == 0)
5162 goto out;
5163
a60eec02
KB		 5164 sg = scsi_sglist(scmd);
5165 sg_descriptor = request->sg_descriptors;
a60eec02 5166
1a22bc4b
DB		 5167 num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
5168 ctrl_info->max_sg_per_iu, &chained);
6c223761 5169
a60eec02 5170 request->partial = chained;
6c223761 5171 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
a60eec02
KB		 5172
5173out:
6c223761
KB		 5174 put_unaligned_le16(iu_length, &request->header.iu_length);
5175 request->num_sg_descriptors = num_sg_in_iu;
5176
5177 return 0;
5178}
5179
5180static void pqi_raid_io_complete(struct pqi_io_request *io_request,
5181 void *context)
5182{
5183 struct scsi_cmnd *scmd;
5184
5185 scmd = io_request->scmd;
5186 pqi_free_io_request(io_request);
5187 scsi_dma_unmap(scmd);
5188 pqi_scsi_done(scmd);
5189}
5190
376fb880
KB		 5191static int pqi_raid_submit_scsi_cmd_with_io_request(
5192 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
6c223761
KB		 5193 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5194 struct pqi_queue_group *queue_group)
5195{
5196 int rc;
5197 size_t cdb_length;
6c223761
KB		 5198 struct pqi_raid_path_request *request;
5199
6c223761
KB		 5200 io_request->io_complete_callback = pqi_raid_io_complete;
5201 io_request->scmd = scmd;
5202
6c223761 5203 request = io_request->iu;
583891c9 5204 memset(request, 0, offsetof(struct pqi_raid_path_request, sg_descriptors));
6c223761
KB		 5205
5206 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
5207 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
5208 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5209 put_unaligned_le16(io_request->index, &request->request_id);
5210 request->error_index = request->request_id;
583891c9 5211 memcpy(request->lun_number, device->scsi3addr, sizeof(request->lun_number));
6c223761
KB		 5212
5213 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
5214 memcpy(request->cdb, scmd->cmnd, cdb_length);
5215
5216 switch (cdb_length) {
5217 case 6:
5218 case 10:
5219 case 12:
5220 case 16:
583891c9 5221 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
6c223761
KB		 5222 break;
5223 case 20:
583891c9 5224 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_4;
6c223761
KB		 5225 break;
5226 case 24:
583891c9 5227 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_8;
6c223761
KB		 5228 break;
5229 case 28:
583891c9 5230 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_12;
6c223761
KB		 5231 break;
5232 case 32:
5233 default:
583891c9 5234 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_16;
6c223761
KB		 5235 break;
5236 }
5237
5238 switch (scmd->sc_data_direction) {
5239 case DMA_TO_DEVICE:
5240 request->data_direction = SOP_READ_FLAG;
5241 break;
5242 case DMA_FROM_DEVICE:
5243 request->data_direction = SOP_WRITE_FLAG;
5244 break;
5245 case DMA_NONE:
5246 request->data_direction = SOP_NO_DIRECTION_FLAG;
5247 break;
5248 case DMA_BIDIRECTIONAL:
5249 request->data_direction = SOP_BIDIRECTIONAL;
5250 break;
5251 default:
5252 dev_err(&ctrl_info->pci_dev->dev,
5253 "unknown data direction: %d\n",
5254 scmd->sc_data_direction);
6c223761
KB		 5255 break;
5256 }
5257
5258 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
5259 if (rc) {
5260 pqi_free_io_request(io_request);
5261 return SCSI_MLQUEUE_HOST_BUSY;
5262 }
5263
5264 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
5265
5266 return 0;
5267}
5268
376fb880
KB		 5269static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5270 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5271 struct pqi_queue_group *queue_group)
5272{
5273 struct pqi_io_request *io_request;
5274
5275 io_request = pqi_alloc_io_request(ctrl_info);
5276
5277 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5278 device, scmd, queue_group);
5279}
5280
5281static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
5282{
5283 if (!pqi_ctrl_blocked(ctrl_info))
5284 schedule_work(&ctrl_info->raid_bypass_retry_work);
5285}
5286
5287static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
5288{
5289 struct scsi_cmnd *scmd;
03b288cf 5290 struct pqi_scsi_dev *device;
376fb880
KB		 5291 struct pqi_ctrl_info *ctrl_info;
5292
5293 if (!io_request->raid_bypass)
5294 return false;
5295
5296 scmd = io_request->scmd;
5297 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
5298 return false;
5299 if (host_byte(scmd->result) == DID_NO_CONNECT)
5300 return false;
5301
03b288cf
KB		 5302 device = scmd->device->hostdata;
5303 if (pqi_device_offline(device))
5304 return false;
5305
376fb880
KB		 5306 ctrl_info = shost_to_hba(scmd->device->host);
5307 if (pqi_ctrl_offline(ctrl_info))
5308 return false;
5309
5310 return true;
5311}
5312
5313static inline void pqi_add_to_raid_bypass_retry_list(
5314 struct pqi_ctrl_info *ctrl_info,
5315 struct pqi_io_request *io_request, bool at_head)
5316{
5317 unsigned long flags;
5318
5319 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5320 if (at_head)
5321 list_add(&io_request->request_list_entry,
5322 &ctrl_info->raid_bypass_retry_list);
5323 else
5324 list_add_tail(&io_request->request_list_entry,
5325 &ctrl_info->raid_bypass_retry_list);
5326 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5327}
5328
5329static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
5330 void *context)
5331{
5332 struct scsi_cmnd *scmd;
5333
5334 scmd = io_request->scmd;
5335 pqi_free_io_request(io_request);
5336 pqi_scsi_done(scmd);
5337}
5338
5339static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
5340{
5341 struct scsi_cmnd *scmd;
5342 struct pqi_ctrl_info *ctrl_info;
5343
5344 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
5345 scmd = io_request->scmd;
5346 scmd->result = 0;
5347 ctrl_info = shost_to_hba(scmd->device->host);
5348
5349 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
5350 pqi_schedule_bypass_retry(ctrl_info);
5351}
5352
5353static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
5354{
5355 struct scsi_cmnd *scmd;
5356 struct pqi_scsi_dev *device;
5357 struct pqi_ctrl_info *ctrl_info;
5358 struct pqi_queue_group *queue_group;
5359
5360 scmd = io_request->scmd;
5361 device = scmd->device->hostdata;
5362 if (pqi_device_in_reset(device)) {
5363 pqi_free_io_request(io_request);
5364 set_host_byte(scmd, DID_RESET);
5365 pqi_scsi_done(scmd);
5366 return 0;
5367 }
5368
5369 ctrl_info = shost_to_hba(scmd->device->host);
5370 queue_group = io_request->queue_group;
5371
5372 pqi_reinit_io_request(io_request);
5373
5374 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5375 device, scmd, queue_group);
5376}
5377
5378static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
5379 struct pqi_ctrl_info *ctrl_info)
5380{
5381 unsigned long flags;
5382 struct pqi_io_request *io_request;
5383
5384 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5385 io_request = list_first_entry_or_null(
5386 &ctrl_info->raid_bypass_retry_list,
5387 struct pqi_io_request, request_list_entry);
5388 if (io_request)
5389 list_del(&io_request->request_list_entry);
5390 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5391
5392 return io_request;
5393}
5394
5395static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
5396{
5397 int rc;
5398 struct pqi_io_request *io_request;
5399
5400 pqi_ctrl_busy(ctrl_info);
5401
5402 while (1) {
5403 if (pqi_ctrl_blocked(ctrl_info))
5404 break;
5405 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
5406 if (!io_request)
5407 break;
5408 rc = pqi_retry_raid_bypass(io_request);
5409 if (rc) {
5410 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
5411 true);
5412 pqi_schedule_bypass_retry(ctrl_info);
5413 break;
5414 }
5415 }
5416
5417 pqi_ctrl_unbusy(ctrl_info);
5418}
5419
5420static void pqi_raid_bypass_retry_worker(struct work_struct *work)
5421{
5422 struct pqi_ctrl_info *ctrl_info;
5423
5424 ctrl_info = container_of(work, struct pqi_ctrl_info,
5425 raid_bypass_retry_work);
5426 pqi_retry_raid_bypass_requests(ctrl_info);
5427}
5428
5f310425
KB		 5429static void pqi_clear_all_queued_raid_bypass_retries(
5430 struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 5431{
5432 unsigned long flags;
376fb880
KB		 5433
5434 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5f310425 5435 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
376fb880
KB		 5436 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5437}
5438
6c223761
KB		 5439static void pqi_aio_io_complete(struct pqi_io_request *io_request,
5440 void *context)
5441{
5442 struct scsi_cmnd *scmd;
5443
5444 scmd = io_request->scmd;
5445 scsi_dma_unmap(scmd);
5446 if (io_request->status == -EAGAIN)
5447 set_host_byte(scmd, DID_IMM_RETRY);
376fb880
KB		 5448 else if (pqi_raid_bypass_retry_needed(io_request)) {
5449 pqi_queue_raid_bypass_retry(io_request);
5450 return;
5451 }
6c223761
KB		 5452 pqi_free_io_request(io_request);
5453 pqi_scsi_done(scmd);
5454}
5455
5456static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5457 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5458 struct pqi_queue_group *queue_group)
5459{
5460 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
376fb880 5461 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
6c223761
KB		 5462}
5463
5464static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
5465 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
5466 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 5467 struct pqi_encryption_info *encryption_info, bool raid_bypass)
6c223761
KB		 5468{
5469 int rc;
5470 struct pqi_io_request *io_request;
5471 struct pqi_aio_path_request *request;
5472
5473 io_request = pqi_alloc_io_request(ctrl_info);
5474 io_request->io_complete_callback = pqi_aio_io_complete;
5475 io_request->scmd = scmd;
376fb880 5476 io_request->raid_bypass = raid_bypass;
6c223761
KB		 5477
5478 request = io_request->iu;
583891c9 5479 memset(request, 0, offsetof(struct pqi_raid_path_request, sg_descriptors));
6c223761
KB		 5480
5481 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
5482 put_unaligned_le32(aio_handle, &request->nexus_id);
5483 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
5484 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5485 put_unaligned_le16(io_request->index, &request->request_id);
5486 request->error_index = request->request_id;
5487 if (cdb_length > sizeof(request->cdb))
5488 cdb_length = sizeof(request->cdb);
5489 request->cdb_length = cdb_length;
5490 memcpy(request->cdb, cdb, cdb_length);
5491
5492 switch (scmd->sc_data_direction) {
5493 case DMA_TO_DEVICE:
5494 request->data_direction = SOP_READ_FLAG;
5495 break;
5496 case DMA_FROM_DEVICE:
5497 request->data_direction = SOP_WRITE_FLAG;
5498 break;
5499 case DMA_NONE:
5500 request->data_direction = SOP_NO_DIRECTION_FLAG;
5501 break;
5502 case DMA_BIDIRECTIONAL:
5503 request->data_direction = SOP_BIDIRECTIONAL;
5504 break;
5505 default:
5506 dev_err(&ctrl_info->pci_dev->dev,
5507 "unknown data direction: %d\n",
5508 scmd->sc_data_direction);
6c223761
KB		 5509 break;
5510 }
5511
5512 if (encryption_info) {
5513 request->encryption_enable = true;
5514 put_unaligned_le16(encryption_info->data_encryption_key_index,
5515 &request->data_encryption_key_index);
5516 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5517 &request->encrypt_tweak_lower);
5518 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5519 &request->encrypt_tweak_upper);
5520 }
5521
5522 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
5523 if (rc) {
5524 pqi_free_io_request(io_request);
5525 return SCSI_MLQUEUE_HOST_BUSY;
5526 }
5527
5528 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5529
5530 return 0;
5531}
5532
7a012c23
DB		 5533static int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
5534 struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
5535 struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
5536 struct pqi_scsi_dev_raid_map_data *rmd)
7a012c23
DB		 5537{
5538 int rc;
5539 struct pqi_io_request *io_request;
5540 struct pqi_aio_r1_path_request *r1_request;
5541
5542 io_request = pqi_alloc_io_request(ctrl_info);
5543 io_request->io_complete_callback = pqi_aio_io_complete;
5544 io_request->scmd = scmd;
5545 io_request->raid_bypass = true;
5546
5547 r1_request = io_request->iu;
5548 memset(r1_request, 0, offsetof(struct pqi_aio_r1_path_request, sg_descriptors));
5549
5550 r1_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID1_IO;
7a012c23
DB		 5551 put_unaligned_le16(*(u16 *)device->scsi3addr & 0x3fff, &r1_request->volume_id);
5552 r1_request->num_drives = rmd->num_it_nexus_entries;
5553 put_unaligned_le32(rmd->it_nexus[0], &r1_request->it_nexus_1);
5554 put_unaligned_le32(rmd->it_nexus[1], &r1_request->it_nexus_2);
5555 if (rmd->num_it_nexus_entries == 3)
5556 put_unaligned_le32(rmd->it_nexus[2], &r1_request->it_nexus_3);
5557
5558 put_unaligned_le32(scsi_bufflen(scmd), &r1_request->data_length);
5559 r1_request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5560 put_unaligned_le16(io_request->index, &r1_request->request_id);
5561 r1_request->error_index = r1_request->request_id;
5562 if (rmd->cdb_length > sizeof(r1_request->cdb))
5563 rmd->cdb_length = sizeof(r1_request->cdb);
5564 r1_request->cdb_length = rmd->cdb_length;
5565 memcpy(r1_request->cdb, rmd->cdb, rmd->cdb_length);
5566
5567 /* The direction is always write. */
5568 r1_request->data_direction = SOP_READ_FLAG;
5569
5570 if (encryption_info) {
5571 r1_request->encryption_enable = true;
5572 put_unaligned_le16(encryption_info->data_encryption_key_index,
5573 &r1_request->data_encryption_key_index);
5574 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5575 &r1_request->encrypt_tweak_lower);
5576 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5577 &r1_request->encrypt_tweak_upper);
5578 }
5579
5580 rc = pqi_build_aio_r1_sg_list(ctrl_info, r1_request, scmd, io_request);
5581 if (rc) {
5582 pqi_free_io_request(io_request);
5583 return SCSI_MLQUEUE_HOST_BUSY;
5584 }
5585
5586 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5587
5588 return 0;
5589}
5590
6702d2c4
DB		 5591static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
5592 struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
5593 struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
5594 struct pqi_scsi_dev_raid_map_data *rmd)
5595{
5596 int rc;
5597 struct pqi_io_request *io_request;
5598 struct pqi_aio_r56_path_request *r56_request;
5599
5600 io_request = pqi_alloc_io_request(ctrl_info);
5601 io_request->io_complete_callback = pqi_aio_io_complete;
5602 io_request->scmd = scmd;
5603 io_request->raid_bypass = true;
5604
5605 r56_request = io_request->iu;
5606 memset(r56_request, 0, offsetof(struct pqi_aio_r56_path_request, sg_descriptors));
5607
5608 if (device->raid_level == SA_RAID_5 || device->raid_level == SA_RAID_51)
5609 r56_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID5_IO;
5610 else
5611 r56_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID6_IO;
5612
5613 put_unaligned_le16(*(u16 *)device->scsi3addr & 0x3fff, &r56_request->volume_id);
5614 put_unaligned_le32(rmd->aio_handle, &r56_request->data_it_nexus);
5615 put_unaligned_le32(rmd->p_parity_it_nexus, &r56_request->p_parity_it_nexus);
5616 if (rmd->raid_level == SA_RAID_6) {
5617 put_unaligned_le32(rmd->q_parity_it_nexus, &r56_request->q_parity_it_nexus);
5618 r56_request->xor_multiplier = rmd->xor_mult;
5619 }
5620 put_unaligned_le32(scsi_bufflen(scmd), &r56_request->data_length);
5621 r56_request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5622 put_unaligned_le64(rmd->row, &r56_request->row);
5623
5624 put_unaligned_le16(io_request->index, &r56_request->request_id);
5625 r56_request->error_index = r56_request->request_id;
5626
5627 if (rmd->cdb_length > sizeof(r56_request->cdb))
5628 rmd->cdb_length = sizeof(r56_request->cdb);
5629 r56_request->cdb_length = rmd->cdb_length;
5630 memcpy(r56_request->cdb, rmd->cdb, rmd->cdb_length);
5631
5632 /* The direction is always write. */
5633 r56_request->data_direction = SOP_READ_FLAG;
5634
5635 if (encryption_info) {
5636 r56_request->encryption_enable = true;
5637 put_unaligned_le16(encryption_info->data_encryption_key_index,
5638 &r56_request->data_encryption_key_index);
5639 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5640 &r56_request->encrypt_tweak_lower);
5641 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5642 &r56_request->encrypt_tweak_upper);
5643 }
5644
5645 rc = pqi_build_aio_r56_sg_list(ctrl_info, r56_request, scmd, io_request);
5646 if (rc) {
5647 pqi_free_io_request(io_request);
5648 return SCSI_MLQUEUE_HOST_BUSY;
5649 }
5650
5651 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5652
5653 return 0;
5654}
5655
061ef06a
KB		 5656static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
5657 struct scsi_cmnd *scmd)
5658{
5659 u16 hw_queue;
5660
5661 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
5662 if (hw_queue > ctrl_info->max_hw_queue_index)
5663 hw_queue = 0;
5664
5665 return hw_queue;
5666}
5667
7561a7e4
KB		 5668/*
5669 * This function gets called just before we hand the completed SCSI request
5670 * back to the SML.
5671 */
5672
5673void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
5674{
5675 struct pqi_scsi_dev *device;
5676
1e46731e
MR		 5677 if (!scmd->device) {
5678 set_host_byte(scmd, DID_NO_CONNECT);
5679 return;
5680 }
5681
7561a7e4 5682 device = scmd->device->hostdata;
1e46731e
MR		 5683 if (!device) {
5684 set_host_byte(scmd, DID_NO_CONNECT);
5685 return;
5686 }
5687
7561a7e4
KB		 5688 atomic_dec(&device->scsi_cmds_outstanding);
5689}
5690
c7ffedb3 5691static bool pqi_is_parity_write_stream(struct pqi_ctrl_info *ctrl_info,
7d81d2b8 5692 struct scsi_cmnd *scmd)
c7ffedb3
DB		 5693{
5694 u32 oldest_jiffies;
5695 u8 lru_index;
5696 int i;
5697 int rc;
5698 struct pqi_scsi_dev *device;
5699 struct pqi_stream_data *pqi_stream_data;
5700 struct pqi_scsi_dev_raid_map_data rmd;
5701
5702 if (!ctrl_info->enable_stream_detection)
5703 return false;
5704
5705 rc = pqi_get_aio_lba_and_block_count(scmd, &rmd);
5706 if (rc)
5707 return false;
5708
5709 /* Check writes only. */
5710 if (!rmd.is_write)
5711 return false;
5712
5713 device = scmd->device->hostdata;
5714
5715 /* Check for RAID 5/6 streams. */
5716 if (device->raid_level != SA_RAID_5 && device->raid_level != SA_RAID_6)
5717 return false;
5718
5719 /*
5720 * If controller does not support AIO RAID{5,6} writes, need to send
5721 * requests down non-AIO path.
5722 */
5723 if ((device->raid_level == SA_RAID_5 && !ctrl_info->enable_r5_writes) ||
5724 (device->raid_level == SA_RAID_6 && !ctrl_info->enable_r6_writes))
5725 return true;
5726
5727 lru_index = 0;
5728 oldest_jiffies = INT_MAX;
5729 for (i = 0; i < NUM_STREAMS_PER_LUN; i++) {
5730 pqi_stream_data = &device->stream_data[i];
5731 /*
5732 * Check for adjacent request or request is within
5733 * the previous request.
5734 */
5735 if ((pqi_stream_data->next_lba &&
5736 rmd.first_block >= pqi_stream_data->next_lba) &&
5737 rmd.first_block <= pqi_stream_data->next_lba +
5738 rmd.block_cnt) {
5739 pqi_stream_data->next_lba = rmd.first_block +
5740 rmd.block_cnt;
5741 pqi_stream_data->last_accessed = jiffies;
5742 return true;
5743 }
5744
5745 /* unused entry */
5746 if (pqi_stream_data->last_accessed == 0) {
5747 lru_index = i;
5748 break;
5749 }
5750
5751 /* Find entry with oldest last accessed time. */
5752 if (pqi_stream_data->last_accessed <= oldest_jiffies) {
5753 oldest_jiffies = pqi_stream_data->last_accessed;
5754 lru_index = i;
5755 }
5756 }
5757
5758 /* Set LRU entry. */
5759 pqi_stream_data = &device->stream_data[lru_index];
5760 pqi_stream_data->last_accessed = jiffies;
5761 pqi_stream_data->next_lba = rmd.first_block + rmd.block_cnt;
5762
5763 return false;
5764}
5765
5766static int pqi_scsi_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
6c223761
KB		 5767{
5768 int rc;
5769 struct pqi_ctrl_info *ctrl_info;
5770 struct pqi_scsi_dev *device;
061ef06a 5771 u16 hw_queue;
6c223761
KB		 5772 struct pqi_queue_group *queue_group;
5773 bool raid_bypassed;
5774
5775 device = scmd->device->hostdata;
6c223761 5776
1e46731e
MR		 5777 if (!device) {
5778 set_host_byte(scmd, DID_NO_CONNECT);
5779 pqi_scsi_done(scmd);
5780 return 0;
5781 }
5782
7561a7e4
KB		 5783 atomic_inc(&device->scsi_cmds_outstanding);
5784
583891c9
KB		 5785 ctrl_info = shost_to_hba(shost);
5786
1bdf6e93 5787 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(device)) {
6c223761
KB		 5788 set_host_byte(scmd, DID_NO_CONNECT);
5789 pqi_scsi_done(scmd);
5790 return 0;
5791 }
5792
7561a7e4 5793 pqi_ctrl_busy(ctrl_info);
4fd22c13 5794 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) ||
0530736e 5795 pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) {
7561a7e4
KB		 5796 rc = SCSI_MLQUEUE_HOST_BUSY;
5797 goto out;
5798 }
5799
7d81d2b8
KB		 5800 /*
5801 * This is necessary because the SML doesn't zero out this field during
5802 * error recovery.
5803 */
5804 scmd->result = 0;
5805
061ef06a
KB		 5806 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
5807 queue_group = &ctrl_info->queue_groups[hw_queue];
6c223761
KB		 5808
5809 if (pqi_is_logical_device(device)) {
5810 raid_bypassed = false;
588a63fe 5811 if (device->raid_bypass_enabled &&
694c5d5b 5812 !blk_rq_is_passthrough(scmd->request)) {
c7ffedb3
DB		 5813 if (!pqi_is_parity_write_stream(ctrl_info, scmd)) {
5814 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
5815 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) {
5816 raid_bypassed = true;
5817 atomic_inc(&device->raid_bypass_cnt);
5818 }
8b664fef 5819 }
6c223761
KB		 5820 }
5821 if (!raid_bypassed)
8b664fef 5822 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6c223761
KB		 5823 } else {
5824 if (device->aio_enabled)
8b664fef 5825 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6c223761 5826 else
8b664fef 5827 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6c223761
KB		 5828 }
5829
7561a7e4
KB		 5830out:
5831 pqi_ctrl_unbusy(ctrl_info);
5832 if (rc)
5833 atomic_dec(&device->scsi_cmds_outstanding);
5834
6c223761
KB		 5835 return rc;
5836}
5837
7561a7e4
KB		 5838static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
5839 struct pqi_queue_group *queue_group)
5840{
5841 unsigned int path;
5842 unsigned long flags;
5843 bool list_is_empty;
5844
5845 for (path = 0; path < 2; path++) {
5846 while (1) {
5847 spin_lock_irqsave(
5848 &queue_group->submit_lock[path], flags);
5849 list_is_empty =
5850 list_empty(&queue_group->request_list[path]);
5851 spin_unlock_irqrestore(
5852 &queue_group->submit_lock[path], flags);
5853 if (list_is_empty)
5854 break;
5855 pqi_check_ctrl_health(ctrl_info);
5856 if (pqi_ctrl_offline(ctrl_info))
5857 return -ENXIO;
5858 usleep_range(1000, 2000);
5859 }
5860 }
5861
5862 return 0;
5863}
5864
5865static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
5866{
5867 int rc;
5868 unsigned int i;
5869 unsigned int path;
5870 struct pqi_queue_group *queue_group;
5871 pqi_index_t iq_pi;
5872 pqi_index_t iq_ci;
5873
5874 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5875 queue_group = &ctrl_info->queue_groups[i];
5876
5877 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
5878 if (rc)
5879 return rc;
5880
5881 for (path = 0; path < 2; path++) {
5882 iq_pi = queue_group->iq_pi_copy[path];
5883
5884 while (1) {
dac12fbc 5885 iq_ci = readl(queue_group->iq_ci[path]);
7561a7e4
KB		 5886 if (iq_ci == iq_pi)
5887 break;
5888 pqi_check_ctrl_health(ctrl_info);
5889 if (pqi_ctrl_offline(ctrl_info))
5890 return -ENXIO;
5891 usleep_range(1000, 2000);
5892 }
5893 }
5894 }
5895
5896 return 0;
5897}
5898
5899static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5900 struct pqi_scsi_dev *device)
5901{
5902 unsigned int i;
5903 unsigned int path;
5904 struct pqi_queue_group *queue_group;
5905 unsigned long flags;
5906 struct pqi_io_request *io_request;
5907 struct pqi_io_request *next;
5908 struct scsi_cmnd *scmd;
5909 struct pqi_scsi_dev *scsi_device;
5910
5911 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5912 queue_group = &ctrl_info->queue_groups[i];
5913
5914 for (path = 0; path < 2; path++) {
5915 spin_lock_irqsave(
5916 &queue_group->submit_lock[path], flags);
5917
5918 list_for_each_entry_safe(io_request, next,
5919 &queue_group->request_list[path],
5920 request_list_entry) {
583891c9 5921
7561a7e4
KB		 5922 scmd = io_request->scmd;
5923 if (!scmd)
5924 continue;
5925
5926 scsi_device = scmd->device->hostdata;
5927 if (scsi_device != device)
5928 continue;
5929
5930 list_del(&io_request->request_list_entry);
5931 set_host_byte(scmd, DID_RESET);
b622a601
MB		 5932 pqi_free_io_request(io_request);
5933 scsi_dma_unmap(scmd);
7561a7e4
KB		 5934 pqi_scsi_done(scmd);
5935 }
5936
5937 spin_unlock_irqrestore(
5938 &queue_group->submit_lock[path], flags);
5939 }
5940 }
5941}
5942
4fd22c13
MR		 5943static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info)
5944{
5945 unsigned int i;
5946 unsigned int path;
5947 struct pqi_queue_group *queue_group;
5948 unsigned long flags;
5949 struct pqi_io_request *io_request;
5950 struct pqi_io_request *next;
5951 struct scsi_cmnd *scmd;
5952
5953 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5954 queue_group = &ctrl_info->queue_groups[i];
5955
5956 for (path = 0; path < 2; path++) {
5957 spin_lock_irqsave(&queue_group->submit_lock[path],
5958 flags);
5959
5960 list_for_each_entry_safe(io_request, next,
5961 &queue_group->request_list[path],
5962 request_list_entry) {
5963
5964 scmd = io_request->scmd;
5965 if (!scmd)
5966 continue;
5967
5968 list_del(&io_request->request_list_entry);
5969 set_host_byte(scmd, DID_RESET);
b622a601
MB		 5970 pqi_free_io_request(io_request);
5971 scsi_dma_unmap(scmd);
4fd22c13
MR		 5972 pqi_scsi_done(scmd);
5973 }
5974
5975 spin_unlock_irqrestore(
5976 &queue_group->submit_lock[path], flags);
5977 }
5978 }
5979}
5980
061ef06a 5981static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
1e46731e 5982 struct pqi_scsi_dev *device, unsigned long timeout_secs)
061ef06a 5983{
1e46731e
MR		 5984 unsigned long timeout;
5985
4fd22c13 5986 timeout = (timeout_secs * PQI_HZ) + jiffies;
1e46731e 5987
061ef06a
KB		 5988 while (atomic_read(&device->scsi_cmds_outstanding)) {
5989 pqi_check_ctrl_health(ctrl_info);
5990 if (pqi_ctrl_offline(ctrl_info))
5991 return -ENXIO;
1e46731e
MR		 5992 if (timeout_secs != NO_TIMEOUT) {
5993 if (time_after(jiffies, timeout)) {
5994 dev_err(&ctrl_info->pci_dev->dev,
5995 "timed out waiting for pending IO\n");
5996 return -ETIMEDOUT;
5997 }
5998 }
061ef06a
KB		 5999 usleep_range(1000, 2000);
6000 }
6001
6002 return 0;
6003}
6004
4fd22c13
MR		 6005static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
6006 unsigned long timeout_secs)
061ef06a
KB		 6007{
6008 bool io_pending;
6009 unsigned long flags;
4fd22c13 6010 unsigned long timeout;
061ef06a
KB		 6011 struct pqi_scsi_dev *device;
6012
4fd22c13 6013 timeout = (timeout_secs * PQI_HZ) + jiffies;
061ef06a
KB		 6014 while (1) {
6015 io_pending = false;
6016
6017 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6018 list_for_each_entry(device, &ctrl_info->scsi_device_list,
6019 scsi_device_list_entry) {
6020 if (atomic_read(&device->scsi_cmds_outstanding)) {
6021 io_pending = true;
6022 break;
6023 }
6024 }
6025 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6026 flags);
6027
6028 if (!io_pending)
6029 break;
6030
6031 pqi_check_ctrl_health(ctrl_info);
6032 if (pqi_ctrl_offline(ctrl_info))
6033 return -ENXIO;
6034
4fd22c13
MR		 6035 if (timeout_secs != NO_TIMEOUT) {
6036 if (time_after(jiffies, timeout)) {
6037 dev_err(&ctrl_info->pci_dev->dev,
6038 "timed out waiting for pending IO\n");
6039 return -ETIMEDOUT;
6040 }
6041 }
061ef06a
KB		 6042 usleep_range(1000, 2000);
6043 }
6044
6045 return 0;
6046}
6047
0530736e
KB		 6048static int pqi_ctrl_wait_for_pending_sync_cmds(struct pqi_ctrl_info *ctrl_info)
6049{
6050 while (atomic_read(&ctrl_info->sync_cmds_outstanding)) {
6051 pqi_check_ctrl_health(ctrl_info);
6052 if (pqi_ctrl_offline(ctrl_info))
6053 return -ENXIO;
6054 usleep_range(1000, 2000);
6055 }
6056
6057 return 0;
6058}
6059
14bb215d
KB		 6060static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
6061 void *context)
6c223761 6062{
14bb215d 6063 struct completion *waiting = context;
6c223761 6064
14bb215d
KB		 6065 complete(waiting);
6066}
6c223761 6067
bb9af08c 6068#define PQI_LUN_RESET_TIMEOUT_SECS 30
c2922f17 6069#define PQI_LUN_RESET_POLL_COMPLETION_SECS 10
14bb215d
KB		 6070
6071static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
6072 struct pqi_scsi_dev *device, struct completion *wait)
6073{
6074 int rc;
14bb215d
KB		 6075
6076 while (1) {
6077 if (wait_for_completion_io_timeout(wait,
c2922f17 6078 PQI_LUN_RESET_POLL_COMPLETION_SECS * PQI_HZ)) {
14bb215d
KB		 6079 rc = 0;
6080 break;
6c223761
KB		 6081 }
6082
14bb215d
KB		 6083 pqi_check_ctrl_health(ctrl_info);
6084 if (pqi_ctrl_offline(ctrl_info)) {
4e8415e3 6085 rc = -ENXIO;
14bb215d
KB		 6086 break;
6087 }
6c223761 6088 }
6c223761 6089
14bb215d 6090 return rc;
6c223761
KB		 6091}
6092
14bb215d 6093static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 6094 struct pqi_scsi_dev *device)
6095{
6096 int rc;
6097 struct pqi_io_request *io_request;
6098 DECLARE_COMPLETION_ONSTACK(wait);
6099 struct pqi_task_management_request *request;
6100
6c223761 6101 io_request = pqi_alloc_io_request(ctrl_info);
14bb215d 6102 io_request->io_complete_callback = pqi_lun_reset_complete;
6c223761
KB		 6103 io_request->context = &wait;
6104
6105 request = io_request->iu;
6106 memset(request, 0, sizeof(*request));
6107
6108 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
6109 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
6110 &request->header.iu_length);
6111 put_unaligned_le16(io_request->index, &request->request_id);
6112 memcpy(request->lun_number, device->scsi3addr,
6113 sizeof(request->lun_number));
6114 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
c2922f17
MB		 6115 if (ctrl_info->tmf_iu_timeout_supported)
6116 put_unaligned_le16(PQI_LUN_RESET_TIMEOUT_SECS,
6117 &request->timeout);
6c223761 6118
583891c9 6119 pqi_start_io(ctrl_info, &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
6c223761
KB		 6120 io_request);
6121
14bb215d
KB		 6122 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
6123 if (rc == 0)
6c223761 6124 rc = io_request->status;
6c223761
KB		 6125
6126 pqi_free_io_request(io_request);
6c223761
KB		 6127
6128 return rc;
6129}
6130
429fab70
KB		 6131/* Performs a reset at the LUN level. */
6132
3406384b
MR		 6133#define PQI_LUN_RESET_RETRIES 3
6134#define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000
429fab70 6135#define PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS 120
6c223761 6136
4fd22c13 6137static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 6138 struct pqi_scsi_dev *device)
6139{
6140 int rc;
3406384b 6141 unsigned int retries;
4fd22c13 6142 unsigned long timeout_secs;
6c223761 6143
3406384b
MR		 6144 for (retries = 0;;) {
6145 rc = pqi_lun_reset(ctrl_info, device);
c2922f17 6146 if (rc == 0 || ++retries > PQI_LUN_RESET_RETRIES)
3406384b
MR		 6147 break;
6148 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
6149 }
429fab70
KB		 6150
6151 timeout_secs = rc ? PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS : NO_TIMEOUT;
4fd22c13
MR		 6152
6153 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs);
6c223761 6154
14bb215d 6155 return rc == 0 ? SUCCESS : FAILED;
6c223761
KB		 6156}
6157
4fd22c13
MR		 6158static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
6159 struct pqi_scsi_dev *device)
6160{
6161 int rc;
6162
6163 mutex_lock(&ctrl_info->lun_reset_mutex);
6164
6165 pqi_ctrl_block_requests(ctrl_info);
6166 pqi_ctrl_wait_until_quiesced(ctrl_info);
6167 pqi_fail_io_queued_for_device(ctrl_info, device);
6168 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
6169 pqi_device_reset_start(device);
6170 pqi_ctrl_unblock_requests(ctrl_info);
6171
6172 if (rc)
6173 rc = FAILED;
6174 else
6175 rc = _pqi_device_reset(ctrl_info, device);
6176
6177 pqi_device_reset_done(device);
6178
6179 mutex_unlock(&ctrl_info->lun_reset_mutex);
429fab70 6180
4fd22c13
MR		 6181 return rc;
6182}
6183
6c223761
KB		 6184static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
6185{
6186 int rc;
7561a7e4 6187 struct Scsi_Host *shost;
6c223761
KB		 6188 struct pqi_ctrl_info *ctrl_info;
6189 struct pqi_scsi_dev *device;
6190
7561a7e4
KB		 6191 shost = scmd->device->host;
6192 ctrl_info = shost_to_hba(shost);
6c223761
KB		 6193 device = scmd->device->hostdata;
6194
6195 dev_err(&ctrl_info->pci_dev->dev,
6196 "resetting scsi %d:%d:%d:%d\n",
7561a7e4 6197 shost->host_no, device->bus, device->target, device->lun);
6c223761 6198
7561a7e4 6199 pqi_check_ctrl_health(ctrl_info);
0530736e
KB		 6200 if (pqi_ctrl_offline(ctrl_info) ||
6201 pqi_device_reset_blocked(ctrl_info)) {
7561a7e4
KB		 6202 rc = FAILED;
6203 goto out;
6204 }
6c223761 6205
4fd22c13 6206 pqi_wait_until_ofa_finished(ctrl_info);
7561a7e4 6207
0530736e 6208 atomic_inc(&ctrl_info->sync_cmds_outstanding);
4fd22c13 6209 rc = pqi_device_reset(ctrl_info, device);
0530736e 6210 atomic_dec(&ctrl_info->sync_cmds_outstanding);
429fab70 6211
7561a7e4 6212out:
6c223761
KB		 6213 dev_err(&ctrl_info->pci_dev->dev,
6214 "reset of scsi %d:%d:%d:%d: %s\n",
7561a7e4 6215 shost->host_no, device->bus, device->target, device->lun,
6c223761
KB		 6216 rc == SUCCESS ? "SUCCESS" : "FAILED");
6217
6218 return rc;
6219}
6220
6221static int pqi_slave_alloc(struct scsi_device *sdev)
6222{
6223 struct pqi_scsi_dev *device;
6224 unsigned long flags;
6225 struct pqi_ctrl_info *ctrl_info;
6226 struct scsi_target *starget;
6227 struct sas_rphy *rphy;
6228
6229 ctrl_info = shost_to_hba(sdev->host);
6230
6231 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6232
6233 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
6234 starget = scsi_target(sdev);
6235 rphy = target_to_rphy(starget);
6236 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
6237 if (device) {
6238 device->target = sdev_id(sdev);
6239 device->lun = sdev->lun;
6240 device->target_lun_valid = true;
6241 }
6242 } else {
6243 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
6244 sdev_id(sdev), sdev->lun);
6245 }
6246
94086f5b 6247 if (device) {
6c223761
KB		 6248 sdev->hostdata = device;
6249 device->sdev = sdev;
6250 if (device->queue_depth) {
6251 device->advertised_queue_depth = device->queue_depth;
6252 scsi_change_queue_depth(sdev,
6253 device->advertised_queue_depth);
6254 }
99a12b48 6255 if (pqi_is_logical_device(device)) {
b6e2ef67 6256 pqi_disable_write_same(sdev);
99a12b48 6257 } else {
2b447f81 6258 sdev->allow_restart = 1;
99a12b48
KB		 6259 if (device->device_type == SA_DEVICE_TYPE_NVME)
6260 pqi_disable_write_same(sdev);
6261 }
6c223761
KB		 6262 }
6263
6264 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6265
6266 return 0;
6267}
6268
52198226
CH		 6269static int pqi_map_queues(struct Scsi_Host *shost)
6270{
6271 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6272
79d3fa9e 6273 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
ed76e329 6274 ctrl_info->pci_dev, 0);
52198226
CH		 6275}
6276
ce143793
KB		 6277static int pqi_slave_configure(struct scsi_device *sdev)
6278{
6279 struct pqi_scsi_dev *device;
6280
6281 device = sdev->hostdata;
6282 device->devtype = sdev->type;
6283
6284 return 0;
6285}
6286
4d15ad38
KB		 6287static void pqi_slave_destroy(struct scsi_device *sdev)
6288{
6289 unsigned long flags;
6290 struct pqi_scsi_dev *device;
6291 struct pqi_ctrl_info *ctrl_info;
6292
6293 ctrl_info = shost_to_hba(sdev->host);
6294
6295 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6296
6297 device = sdev->hostdata;
6298 if (device) {
6299 sdev->hostdata = NULL;
6300 if (!list_empty(&device->scsi_device_list_entry))
6301 list_del(&device->scsi_device_list_entry);
6302 }
6303
6304 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6305
6306 if (device) {
6307 pqi_dev_info(ctrl_info, "removed", device);
6308 pqi_free_device(device);
6309 }
6310}
6311
8b664fef 6312static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
6c223761
KB		 6313{
6314 struct pci_dev *pci_dev;
6315 u32 subsystem_vendor;
6316 u32 subsystem_device;
6317 cciss_pci_info_struct pciinfo;
6318
6319 if (!arg)
6320 return -EINVAL;
6321
6322 pci_dev = ctrl_info->pci_dev;
6323
6324 pciinfo.domain = pci_domain_nr(pci_dev->bus);
6325 pciinfo.bus = pci_dev->bus->number;
6326 pciinfo.dev_fn = pci_dev->devfn;
6327 subsystem_vendor = pci_dev->subsystem_vendor;
6328 subsystem_device = pci_dev->subsystem_device;
8b664fef 6329 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | subsystem_vendor;
6c223761
KB		 6330
6331 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
6332 return -EFAULT;
6333
6334 return 0;
6335}
6336
6337static int pqi_getdrivver_ioctl(void __user *arg)
6338{
6339 u32 version;
6340
6341 if (!arg)
6342 return -EINVAL;
6343
6344 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
6345 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
6346
6347 if (copy_to_user(arg, &version, sizeof(version)))
6348 return -EFAULT;
6349
6350 return 0;
6351}
6352
6353struct ciss_error_info {
6354 u8 scsi_status;
6355 int command_status;
6356 size_t sense_data_length;
6357};
6358
6359static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
6360 struct ciss_error_info *ciss_error_info)
6361{
6362 int ciss_cmd_status;
6363 size_t sense_data_length;
6364
6365 switch (pqi_error_info->data_out_result) {
6366 case PQI_DATA_IN_OUT_GOOD:
6367 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
6368 break;
6369 case PQI_DATA_IN_OUT_UNDERFLOW:
6370 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
6371 break;
6372 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
6373 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
6374 break;
6375 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
6376 case PQI_DATA_IN_OUT_BUFFER_ERROR:
6377 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
6378 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
6379 case PQI_DATA_IN_OUT_ERROR:
6380 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
6381 break;
6382 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
6383 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
6384 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
6385 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
6386 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
6387 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
6388 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
6389 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
6390 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
6391 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
6392 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
6393 break;
6394 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
6395 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
6396 break;
6397 case PQI_DATA_IN_OUT_ABORTED:
6398 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
6399 break;
6400 case PQI_DATA_IN_OUT_TIMEOUT:
6401 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
6402 break;
6403 default:
6404 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
6405 break;
6406 }
6407
6408 sense_data_length =
6409 get_unaligned_le16(&pqi_error_info->sense_data_length);
6410 if (sense_data_length == 0)
6411 sense_data_length =
6412 get_unaligned_le16(&pqi_error_info->response_data_length);
6413 if (sense_data_length)
6414 if (sense_data_length > sizeof(pqi_error_info->data))
6415 sense_data_length = sizeof(pqi_error_info->data);
6416
6417 ciss_error_info->scsi_status = pqi_error_info->status;
6418 ciss_error_info->command_status = ciss_cmd_status;
6419 ciss_error_info->sense_data_length = sense_data_length;
6420}
6421
6422static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
6423{
6424 int rc;
6425 char *kernel_buffer = NULL;
6426 u16 iu_length;
6427 size_t sense_data_length;
6428 IOCTL_Command_struct iocommand;
6429 struct pqi_raid_path_request request;
6430 struct pqi_raid_error_info pqi_error_info;
6431 struct ciss_error_info ciss_error_info;
6432
6433 if (pqi_ctrl_offline(ctrl_info))
6434 return -ENXIO;
6435 if (!arg)
6436 return -EINVAL;
6437 if (!capable(CAP_SYS_RAWIO))
6438 return -EPERM;
6439 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
6440 return -EFAULT;
6441 if (iocommand.buf_size < 1 &&
6442 iocommand.Request.Type.Direction != XFER_NONE)
6443 return -EINVAL;
6444 if (iocommand.Request.CDBLen > sizeof(request.cdb))
6445 return -EINVAL;
6446 if (iocommand.Request.Type.Type != TYPE_CMD)
6447 return -EINVAL;
6448
6449 switch (iocommand.Request.Type.Direction) {
6450 case XFER_NONE:
6451 case XFER_WRITE:
6452 case XFER_READ:
41555d54 6453 case XFER_READ | XFER_WRITE:
6c223761
KB		 6454 break;
6455 default:
6456 return -EINVAL;
6457 }
6458
6459 if (iocommand.buf_size > 0) {
6460 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
6461 if (!kernel_buffer)
6462 return -ENOMEM;
6463 if (iocommand.Request.Type.Direction & XFER_WRITE) {
6464 if (copy_from_user(kernel_buffer, iocommand.buf,
6465 iocommand.buf_size)) {
6466 rc = -EFAULT;
6467 goto out;
6468 }
6469 } else {
6470 memset(kernel_buffer, 0, iocommand.buf_size);
6471 }
6472 }
6473
6474 memset(&request, 0, sizeof(request));
6475
6476 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
6477 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
6478 PQI_REQUEST_HEADER_LENGTH;
6479 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
6480 sizeof(request.lun_number));
6481 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
6482 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
6483
6484 switch (iocommand.Request.Type.Direction) {
6485 case XFER_NONE:
6486 request.data_direction = SOP_NO_DIRECTION_FLAG;
6487 break;
6488 case XFER_WRITE:
6489 request.data_direction = SOP_WRITE_FLAG;
6490 break;
6491 case XFER_READ:
6492 request.data_direction = SOP_READ_FLAG;
6493 break;
41555d54
KB		 6494 case XFER_READ | XFER_WRITE:
6495 request.data_direction = SOP_BIDIRECTIONAL;
6496 break;
6c223761
KB		 6497 }
6498
6499 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
6500
6501 if (iocommand.buf_size > 0) {
6502 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
6503
6504 rc = pqi_map_single(ctrl_info->pci_dev,
6505 &request.sg_descriptors[0], kernel_buffer,
6917a9cc 6506 iocommand.buf_size, DMA_BIDIRECTIONAL);
6c223761
KB		 6507 if (rc)
6508 goto out;
6509
6510 iu_length += sizeof(request.sg_descriptors[0]);
6511 }
6512
6513 put_unaligned_le16(iu_length, &request.header.iu_length);
6514
21432010 6515 if (ctrl_info->raid_iu_timeout_supported)
6516 put_unaligned_le32(iocommand.Request.Timeout, &request.timeout);
6517
6c223761
KB		 6518 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6519 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
6520
6521 if (iocommand.buf_size > 0)
6522 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
6917a9cc 6523 DMA_BIDIRECTIONAL);
6c223761
KB		 6524
6525 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
6526
6527 if (rc == 0) {
6528 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
6529 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
6530 iocommand.error_info.CommandStatus =
6531 ciss_error_info.command_status;
6532 sense_data_length = ciss_error_info.sense_data_length;
6533 if (sense_data_length) {
6534 if (sense_data_length >
6535 sizeof(iocommand.error_info.SenseInfo))
6536 sense_data_length =
6537 sizeof(iocommand.error_info.SenseInfo);
6538 memcpy(iocommand.error_info.SenseInfo,
6539 pqi_error_info.data, sense_data_length);
6540 iocommand.error_info.SenseLen = sense_data_length;
6541 }
6542 }
6543
6544 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
6545 rc = -EFAULT;
6546 goto out;
6547 }
6548
6549 if (rc == 0 && iocommand.buf_size > 0 &&
6550 (iocommand.Request.Type.Direction & XFER_READ)) {
6551 if (copy_to_user(iocommand.buf, kernel_buffer,
6552 iocommand.buf_size)) {
6553 rc = -EFAULT;
6554 }
6555 }
6556
6557out:
6558 kfree(kernel_buffer);
6559
6560 return rc;
6561}
6562
6f4e626f
NC		 6563static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd,
6564 void __user *arg)
6c223761
KB		 6565{
6566 int rc;
6567 struct pqi_ctrl_info *ctrl_info;
6568
6569 ctrl_info = shost_to_hba(sdev->host);
6570
694c5d5b 6571 if (pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info))
4fd22c13
MR		 6572 return -EBUSY;
6573
6c223761
KB		 6574 switch (cmd) {
6575 case CCISS_DEREGDISK:
6576 case CCISS_REGNEWDISK:
6577 case CCISS_REGNEWD:
6578 rc = pqi_scan_scsi_devices(ctrl_info);
6579 break;
6580 case CCISS_GETPCIINFO:
6581 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
6582 break;
6583 case CCISS_GETDRIVVER:
6584 rc = pqi_getdrivver_ioctl(arg);
6585 break;
6586 case CCISS_PASSTHRU:
6587 rc = pqi_passthru_ioctl(ctrl_info, arg);
6588 break;
6589 default:
6590 rc = -EINVAL;
6591 break;
6592 }
6593
6594 return rc;
6595}
6596
6d90615f 6597static ssize_t pqi_firmware_version_show(struct device *dev,
6c223761
KB		 6598 struct device_attribute *attr, char *buffer)
6599{
6c223761
KB		 6600 struct Scsi_Host *shost;
6601 struct pqi_ctrl_info *ctrl_info;
6602
6603 shost = class_to_shost(dev);
6604 ctrl_info = shost_to_hba(shost);
6605
6d90615f
MB		 6606 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version);
6607}
6608
6609static ssize_t pqi_driver_version_show(struct device *dev,
6610 struct device_attribute *attr, char *buffer)
6611{
694c5d5b
KB		 6612 return snprintf(buffer, PAGE_SIZE, "%s\n",
6613 DRIVER_VERSION BUILD_TIMESTAMP);
6d90615f 6614}
6c223761 6615
6d90615f
MB		 6616static ssize_t pqi_serial_number_show(struct device *dev,
6617 struct device_attribute *attr, char *buffer)
6618{
6619 struct Scsi_Host *shost;
6620 struct pqi_ctrl_info *ctrl_info;
6621
6622 shost = class_to_shost(dev);
6623 ctrl_info = shost_to_hba(shost);
6624
6625 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number);
6626}
6627
6628static ssize_t pqi_model_show(struct device *dev,
6629 struct device_attribute *attr, char *buffer)
6630{
6631 struct Scsi_Host *shost;
6632 struct pqi_ctrl_info *ctrl_info;
6633
6634 shost = class_to_shost(dev);
6635 ctrl_info = shost_to_hba(shost);
6636
6637 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model);
6638}
6639
6640static ssize_t pqi_vendor_show(struct device *dev,
6641 struct device_attribute *attr, char *buffer)
6642{
6643 struct Scsi_Host *shost;
6644 struct pqi_ctrl_info *ctrl_info;
6645
6646 shost = class_to_shost(dev);
6647 ctrl_info = shost_to_hba(shost);
6648
6649 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor);
6c223761
KB		 6650}
6651
6652static ssize_t pqi_host_rescan_store(struct device *dev,
6653 struct device_attribute *attr, const char *buffer, size_t count)
6654{
6655 struct Scsi_Host *shost = class_to_shost(dev);
6656
6657 pqi_scan_start(shost);
6658
6659 return count;
6660}
6661
3c50976f
KB		 6662static ssize_t pqi_lockup_action_show(struct device *dev,
6663 struct device_attribute *attr, char *buffer)
6664{
6665 int count = 0;
6666 unsigned int i;
6667
6668 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6669 if (pqi_lockup_actions[i].action == pqi_lockup_action)
181aea89 6670 count += scnprintf(buffer + count, PAGE_SIZE - count,
3c50976f
KB		 6671 "[%s] ", pqi_lockup_actions[i].name);
6672 else
181aea89 6673 count += scnprintf(buffer + count, PAGE_SIZE - count,
3c50976f
KB		 6674 "%s ", pqi_lockup_actions[i].name);
6675 }
6676
181aea89 6677 count += scnprintf(buffer + count, PAGE_SIZE - count, "\n");
3c50976f
KB		 6678
6679 return count;
6680}
6681
6682static ssize_t pqi_lockup_action_store(struct device *dev,
6683 struct device_attribute *attr, const char *buffer, size_t count)
6684{
6685 unsigned int i;
6686 char *action_name;
6687 char action_name_buffer[32];
6688
6689 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
6690 action_name = strstrip(action_name_buffer);
6691
6692 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6693 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
6694 pqi_lockup_action = pqi_lockup_actions[i].action;
6695 return count;
6696 }
6697 }
6698
6699 return -EINVAL;
6700}
6701
5be746d7
DB		 6702static ssize_t pqi_host_enable_stream_detection_show(struct device *dev,
6703 struct device_attribute *attr, char *buffer)
6704{
6705 struct Scsi_Host *shost = class_to_shost(dev);
6706 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6707
6708 return scnprintf(buffer, 10, "%x\n",
6709 ctrl_info->enable_stream_detection);
6710}
6711
6712static ssize_t pqi_host_enable_stream_detection_store(struct device *dev,
6713 struct device_attribute *attr, const char *buffer, size_t count)
6714{
6715 struct Scsi_Host *shost = class_to_shost(dev);
6716 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6717 u8 set_stream_detection = 0;
6718
6719 if (kstrtou8(buffer, 0, &set_stream_detection))
6720 return -EINVAL;
6721
6722 if (set_stream_detection > 0)
6723 set_stream_detection = 1;
6724
6725 ctrl_info->enable_stream_detection = set_stream_detection;
6726
6727 return count;
6728}
6729
6702d2c4
DB		 6730static ssize_t pqi_host_enable_r5_writes_show(struct device *dev,
6731 struct device_attribute *attr, char *buffer)
6732{
6733 struct Scsi_Host *shost = class_to_shost(dev);
6734 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6735
6736 return scnprintf(buffer, 10, "%x\n", ctrl_info->enable_r5_writes);
6737}
6738
6739static ssize_t pqi_host_enable_r5_writes_store(struct device *dev,
6740 struct device_attribute *attr, const char *buffer, size_t count)
6741{
6742 struct Scsi_Host *shost = class_to_shost(dev);
6743 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6744 u8 set_r5_writes = 0;
6745
6746 if (kstrtou8(buffer, 0, &set_r5_writes))
6747 return -EINVAL;
6748
6749 if (set_r5_writes > 0)
6750 set_r5_writes = 1;
6751
6752 ctrl_info->enable_r5_writes = set_r5_writes;
6753
6754 return count;
6755}
6756
6757static ssize_t pqi_host_enable_r6_writes_show(struct device *dev,
6758 struct device_attribute *attr, char *buffer)
6759{
6760 struct Scsi_Host *shost = class_to_shost(dev);
6761 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6762
6763 return scnprintf(buffer, 10, "%x\n", ctrl_info->enable_r6_writes);
6764}
6765
6766static ssize_t pqi_host_enable_r6_writes_store(struct device *dev,
6767 struct device_attribute *attr, const char *buffer, size_t count)
6768{
6769 struct Scsi_Host *shost = class_to_shost(dev);
6770 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6771 u8 set_r6_writes = 0;
6772
6773 if (kstrtou8(buffer, 0, &set_r6_writes))
6774 return -EINVAL;
6775
6776 if (set_r6_writes > 0)
6777 set_r6_writes = 1;
6778
6779 ctrl_info->enable_r6_writes = set_r6_writes;
6780
6781 return count;
6782}
6783
6d90615f
MB		 6784static DEVICE_ATTR(driver_version, 0444, pqi_driver_version_show, NULL);
6785static DEVICE_ATTR(firmware_version, 0444, pqi_firmware_version_show, NULL);
6786static DEVICE_ATTR(model, 0444, pqi_model_show, NULL);
6787static DEVICE_ATTR(serial_number, 0444, pqi_serial_number_show, NULL);
6788static DEVICE_ATTR(vendor, 0444, pqi_vendor_show, NULL);
cbe0c7b1 6789static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
583891c9
KB		 6790static DEVICE_ATTR(lockup_action, 0644, pqi_lockup_action_show,
6791 pqi_lockup_action_store);
5be746d7
DB		 6792static DEVICE_ATTR(enable_stream_detection, 0644,
6793 pqi_host_enable_stream_detection_show,
6794 pqi_host_enable_stream_detection_store);
6702d2c4
DB		 6795static DEVICE_ATTR(enable_r5_writes, 0644,
6796 pqi_host_enable_r5_writes_show, pqi_host_enable_r5_writes_store);
6797static DEVICE_ATTR(enable_r6_writes, 0644,
6798 pqi_host_enable_r6_writes_show, pqi_host_enable_r6_writes_store);
6c223761
KB		 6799
6800static struct device_attribute *pqi_shost_attrs[] = {
6d90615f
MB		 6801 &dev_attr_driver_version,
6802 &dev_attr_firmware_version,
6803 &dev_attr_model,
6804 &dev_attr_serial_number,
6805 &dev_attr_vendor,
6c223761 6806 &dev_attr_rescan,
3c50976f 6807 &dev_attr_lockup_action,
5be746d7 6808 &dev_attr_enable_stream_detection,
6702d2c4
DB		 6809 &dev_attr_enable_r5_writes,
6810 &dev_attr_enable_r6_writes,
6c223761
KB		 6811 NULL
6812};
6813
cd128244
DC		 6814static ssize_t pqi_unique_id_show(struct device *dev,
6815 struct device_attribute *attr, char *buffer)
6816{
6817 struct pqi_ctrl_info *ctrl_info;
6818 struct scsi_device *sdev;
6819 struct pqi_scsi_dev *device;
6820 unsigned long flags;
5b083b30 6821 u8 unique_id[16];
cd128244
DC		 6822
6823 sdev = to_scsi_device(dev);
6824 ctrl_info = shost_to_hba(sdev->host);
6825
6826 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6827
6828 device = sdev->hostdata;
6829 if (!device) {
8b664fef 6830 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
cd128244
DC		 6831 return -ENODEV;
6832 }
5b083b30
KB		 6833
6834 if (device->is_physical_device) {
6835 memset(unique_id, 0, 8);
6836 memcpy(unique_id + 8, &device->wwid, sizeof(device->wwid));
6837 } else {
6838 memcpy(unique_id, device->volume_id, sizeof(device->volume_id));
6839 }
cd128244
DC		 6840
6841 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6842
5995b236 6843 return snprintf(buffer, PAGE_SIZE,
583891c9
KB		 6844 "%02X%02X%02X%02X%02X%02X%02X%02X"
6845 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
5b083b30
KB		 6846 unique_id[0], unique_id[1], unique_id[2], unique_id[3],
6847 unique_id[4], unique_id[5], unique_id[6], unique_id[7],
6848 unique_id[8], unique_id[9], unique_id[10], unique_id[11],
6849 unique_id[12], unique_id[13], unique_id[14], unique_id[15]);
cd128244
DC		 6850}
6851
6852static ssize_t pqi_lunid_show(struct device *dev,
6853 struct device_attribute *attr, char *buffer)
6854{
6855 struct pqi_ctrl_info *ctrl_info;
6856 struct scsi_device *sdev;
6857 struct pqi_scsi_dev *device;
6858 unsigned long flags;
6859 u8 lunid[8];
6860
6861 sdev = to_scsi_device(dev);
6862 ctrl_info = shost_to_hba(sdev->host);
6863
6864 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6865
6866 device = sdev->hostdata;
6867 if (!device) {
8b664fef 6868 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
cd128244
DC		 6869 return -ENODEV;
6870 }
694c5d5b 6871
cd128244
DC		 6872 memcpy(lunid, device->scsi3addr, sizeof(lunid));
6873
6874 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6875
6876 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
6877}
6878
694c5d5b
KB		 6879#define MAX_PATHS 8
6880
cd128244
DC		 6881static ssize_t pqi_path_info_show(struct device *dev,
6882 struct device_attribute *attr, char *buf)
6883{
6884 struct pqi_ctrl_info *ctrl_info;
6885 struct scsi_device *sdev;
6886 struct pqi_scsi_dev *device;
6887 unsigned long flags;
6888 int i;
6889 int output_len = 0;
6890 u8 box;
6891 u8 bay;
694c5d5b 6892 u8 path_map_index;
cd128244 6893 char *active;
694c5d5b 6894 u8 phys_connector[2];
cd128244
DC		 6895
6896 sdev = to_scsi_device(dev);
6897 ctrl_info = shost_to_hba(sdev->host);
6898
6899 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6900
6901 device = sdev->hostdata;
6902 if (!device) {
8b664fef 6903 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
cd128244
DC		 6904 return -ENODEV;
6905 }
6906
6907 bay = device->bay;
6908 for (i = 0; i < MAX_PATHS; i++) {
694c5d5b 6909 path_map_index = 1 << i;
cd128244
DC		 6910 if (i == device->active_path_index)
6911 active = "Active";
6912 else if (device->path_map & path_map_index)
6913 active = "Inactive";
6914 else
6915 continue;
6916
6917 output_len += scnprintf(buf + output_len,
6918 PAGE_SIZE - output_len,
6919 "[%d:%d:%d:%d] %20.20s ",
6920 ctrl_info->scsi_host->host_no,
6921 device->bus, device->target,
6922 device->lun,
6923 scsi_device_type(device->devtype));
6924
6925 if (device->devtype == TYPE_RAID ||
6926 pqi_is_logical_device(device))
6927 goto end_buffer;
6928
6929 memcpy(&phys_connector, &device->phys_connector[i],
6930 sizeof(phys_connector));
6931 if (phys_connector[0] < '0')
6932 phys_connector[0] = '0';
6933 if (phys_connector[1] < '0')
6934 phys_connector[1] = '0';
6935
6936 output_len += scnprintf(buf + output_len,
6937 PAGE_SIZE - output_len,
6938 "PORT: %.2s ", phys_connector);
6939
6940 box = device->box[i];
6941 if (box != 0 && box != 0xFF)
6942 output_len += scnprintf(buf + output_len,
6943 PAGE_SIZE - output_len,
6944 "BOX: %hhu ", box);
6945
6946 if ((device->devtype == TYPE_DISK ||
6947 device->devtype == TYPE_ZBC) &&
6948 pqi_expose_device(device))
6949 output_len += scnprintf(buf + output_len,
6950 PAGE_SIZE - output_len,
6951 "BAY: %hhu ", bay);
6952
6953end_buffer:
6954 output_len += scnprintf(buf + output_len,
6955 PAGE_SIZE - output_len,
6956 "%s\n", active);
6957 }
6958
6959 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
694c5d5b 6960
cd128244
DC		 6961 return output_len;
6962}
6963
6c223761
KB		 6964static ssize_t pqi_sas_address_show(struct device *dev,
6965 struct device_attribute *attr, char *buffer)
6966{
6967 struct pqi_ctrl_info *ctrl_info;
6968 struct scsi_device *sdev;
6969 struct pqi_scsi_dev *device;
6970 unsigned long flags;
6971 u64 sas_address;
6972
6973 sdev = to_scsi_device(dev);
6974 ctrl_info = shost_to_hba(sdev->host);
6975
6976 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6977
6978 device = sdev->hostdata;
8b664fef
KB		 6979 if (!device || !pqi_is_device_with_sas_address(device)) {
6980 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6c223761
KB		 6981 return -ENODEV;
6982 }
694c5d5b 6983
6c223761
KB		 6984 sas_address = device->sas_address;
6985
6986 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6987
6988 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
6989}
6990
6991static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
6992 struct device_attribute *attr, char *buffer)
6993{
6994 struct pqi_ctrl_info *ctrl_info;
6995 struct scsi_device *sdev;
6996 struct pqi_scsi_dev *device;
6997 unsigned long flags;
6998
6999 sdev = to_scsi_device(dev);
7000 ctrl_info = shost_to_hba(sdev->host);
7001
7002 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7003
7004 device = sdev->hostdata;
8b664fef
KB		 7005 if (!device) {
7006 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7007 return -ENODEV;
7008 }
7009
588a63fe 7010 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
6c223761
KB		 7011 buffer[1] = '\n';
7012 buffer[2] = '\0';
7013
7014 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7015
7016 return 2;
7017}
7018
a9f93392
KB		 7019static ssize_t pqi_raid_level_show(struct device *dev,
7020 struct device_attribute *attr, char *buffer)
7021{
7022 struct pqi_ctrl_info *ctrl_info;
7023 struct scsi_device *sdev;
7024 struct pqi_scsi_dev *device;
7025 unsigned long flags;
7026 char *raid_level;
7027
7028 sdev = to_scsi_device(dev);
7029 ctrl_info = shost_to_hba(sdev->host);
7030
7031 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7032
7033 device = sdev->hostdata;
8b664fef
KB		 7034 if (!device) {
7035 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7036 return -ENODEV;
7037 }
a9f93392
KB		 7038
7039 if (pqi_is_logical_device(device))
7040 raid_level = pqi_raid_level_to_string(device->raid_level);
7041 else
7042 raid_level = "N/A";
7043
7044 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7045
7046 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
7047}
7048
8b664fef
KB		 7049static ssize_t pqi_raid_bypass_cnt_show(struct device *dev,
7050 struct device_attribute *attr, char *buffer)
7051{
7052 struct pqi_ctrl_info *ctrl_info;
7053 struct scsi_device *sdev;
7054 struct pqi_scsi_dev *device;
7055 unsigned long flags;
7056 int raid_bypass_cnt;
7057
7058 sdev = to_scsi_device(dev);
7059 ctrl_info = shost_to_hba(sdev->host);
7060
7061 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7062
7063 device = sdev->hostdata;
7064 if (!device) {
7065 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7066 return -ENODEV;
7067 }
7068
7069 raid_bypass_cnt = atomic_read(&device->raid_bypass_cnt);
7070
7071 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7072
7073 return snprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt);
7074}
7075
cd128244
DC		 7076static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
7077static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
7078static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
cbe0c7b1 7079static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
8b664fef 7080static DEVICE_ATTR(ssd_smart_path_enabled, 0444, pqi_ssd_smart_path_enabled_show, NULL);
a9f93392 7081static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
8b664fef 7082static DEVICE_ATTR(raid_bypass_cnt, 0444, pqi_raid_bypass_cnt_show, NULL);
6c223761
KB		 7083
7084static struct device_attribute *pqi_sdev_attrs[] = {
cd128244
DC		 7085 &dev_attr_lunid,
7086 &dev_attr_unique_id,
7087 &dev_attr_path_info,
6c223761
KB		 7088 &dev_attr_sas_address,
7089 &dev_attr_ssd_smart_path_enabled,
a9f93392 7090 &dev_attr_raid_level,
8b664fef 7091 &dev_attr_raid_bypass_cnt,
6c223761
KB		 7092 NULL
7093};
7094
7095static struct scsi_host_template pqi_driver_template = {
7096 .module = THIS_MODULE,
7097 .name = DRIVER_NAME_SHORT,
7098 .proc_name = DRIVER_NAME_SHORT,
7099 .queuecommand = pqi_scsi_queue_command,
7100 .scan_start = pqi_scan_start,
7101 .scan_finished = pqi_scan_finished,
7102 .this_id = -1,
6c223761
KB		 7103 .eh_device_reset_handler = pqi_eh_device_reset_handler,
7104 .ioctl = pqi_ioctl,
7105 .slave_alloc = pqi_slave_alloc,
ce143793 7106 .slave_configure = pqi_slave_configure,
4d15ad38 7107 .slave_destroy = pqi_slave_destroy,
52198226 7108 .map_queues = pqi_map_queues,
6c223761
KB		 7109 .sdev_attrs = pqi_sdev_attrs,
7110 .shost_attrs = pqi_shost_attrs,
7111};
7112
7113static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
7114{
7115 int rc;
7116 struct Scsi_Host *shost;
7117
7118 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
7119 if (!shost) {
583891c9 7120 dev_err(&ctrl_info->pci_dev->dev, "scsi_host_alloc failed\n");
6c223761
KB		 7121 return -ENOMEM;
7122 }
7123
7124 shost->io_port = 0;
7125 shost->n_io_port = 0;
7126 shost->this_id = -1;
7127 shost->max_channel = PQI_MAX_BUS;
7128 shost->max_cmd_len = MAX_COMMAND_SIZE;
7129 shost->max_lun = ~0;
7130 shost->max_id = ~0;
7131 shost->max_sectors = ctrl_info->max_sectors;
7132 shost->can_queue = ctrl_info->scsi_ml_can_queue;
7133 shost->cmd_per_lun = shost->can_queue;
7134 shost->sg_tablesize = ctrl_info->sg_tablesize;
7135 shost->transportt = pqi_sas_transport_template;
52198226 7136 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
6c223761
KB		 7137 shost->unique_id = shost->irq;
7138 shost->nr_hw_queues = ctrl_info->num_queue_groups;
c6d3ee20 7139 shost->host_tagset = 1;
6c223761
KB		 7140 shost->hostdata[0] = (unsigned long)ctrl_info;
7141
7142 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
7143 if (rc) {
583891c9 7144 dev_err(&ctrl_info->pci_dev->dev, "scsi_add_host failed\n");
6c223761
KB		 7145 goto free_host;
7146 }
7147
7148 rc = pqi_add_sas_host(shost, ctrl_info);
7149 if (rc) {
583891c9 7150 dev_err(&ctrl_info->pci_dev->dev, "add SAS host failed\n");
6c223761
KB		 7151 goto remove_host;
7152 }
7153
7154 ctrl_info->scsi_host = shost;
7155
7156 return 0;
7157
7158remove_host:
7159 scsi_remove_host(shost);
7160free_host:
7161 scsi_host_put(shost);
7162
7163 return rc;
7164}
7165
7166static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
7167{
7168 struct Scsi_Host *shost;
7169
7170 pqi_delete_sas_host(ctrl_info);
7171
7172 shost = ctrl_info->scsi_host;
7173 if (!shost)
7174 return;
7175
7176 scsi_remove_host(shost);
7177 scsi_host_put(shost);
7178}
7179
336b6819
KB		 7180static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
7181{
7182 int rc = 0;
7183 struct pqi_device_registers __iomem *pqi_registers;
7184 unsigned long timeout;
7185 unsigned int timeout_msecs;
7186 union pqi_reset_register reset_reg;
6c223761 7187
336b6819
KB		 7188 pqi_registers = ctrl_info->pqi_registers;
7189 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
7190 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
7191
7192 while (1) {
7193 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
7194 reset_reg.all_bits = readl(&pqi_registers->device_reset);
7195 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
7196 break;
7197 pqi_check_ctrl_health(ctrl_info);
7198 if (pqi_ctrl_offline(ctrl_info)) {
7199 rc = -ENXIO;
7200 break;
7201 }
7202 if (time_after(jiffies, timeout)) {
7203 rc = -ETIMEDOUT;
7204 break;
7205 }
7206 }
7207
7208 return rc;
7209}
6c223761
KB		 7210
7211static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
7212{
7213 int rc;
336b6819
KB		 7214 union pqi_reset_register reset_reg;
7215
7216 if (ctrl_info->pqi_reset_quiesce_supported) {
7217 rc = sis_pqi_reset_quiesce(ctrl_info);
7218 if (rc) {
7219 dev_err(&ctrl_info->pci_dev->dev,
583891c9 7220 "PQI reset failed during quiesce with error %d\n", rc);
336b6819
KB		 7221 return rc;
7222 }
7223 }
6c223761 7224
336b6819
KB		 7225 reset_reg.all_bits = 0;
7226 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
7227 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
6c223761 7228
336b6819 7229 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
6c223761 7230
336b6819 7231 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
6c223761
KB		 7232 if (rc)
7233 dev_err(&ctrl_info->pci_dev->dev,
336b6819 7234 "PQI reset failed with error %d\n", rc);
6c223761
KB		 7235
7236 return rc;
7237}
7238
6d90615f
MB		 7239static int pqi_get_ctrl_serial_number(struct pqi_ctrl_info *ctrl_info)
7240{
7241 int rc;
7242 struct bmic_sense_subsystem_info *sense_info;
7243
7244 sense_info = kzalloc(sizeof(*sense_info), GFP_KERNEL);
7245 if (!sense_info)
7246 return -ENOMEM;
7247
7248 rc = pqi_sense_subsystem_info(ctrl_info, sense_info);
7249 if (rc)
7250 goto out;
7251
7252 memcpy(ctrl_info->serial_number, sense_info->ctrl_serial_number,
7253 sizeof(sense_info->ctrl_serial_number));
7254 ctrl_info->serial_number[sizeof(sense_info->ctrl_serial_number)] = '\0';
7255
7256out:
7257 kfree(sense_info);
7258
7259 return rc;
7260}
7261
7262static int pqi_get_ctrl_product_details(struct pqi_ctrl_info *ctrl_info)
6c223761
KB		 7263{
7264 int rc;
7265 struct bmic_identify_controller *identify;
7266
7267 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
7268 if (!identify)
7269 return -ENOMEM;
7270
7271 rc = pqi_identify_controller(ctrl_info, identify);
7272 if (rc)
7273 goto out;
7274
598bef8d
KB		 7275 if (get_unaligned_le32(&identify->extra_controller_flags) &
7276 BMIC_IDENTIFY_EXTRA_FLAGS_LONG_FW_VERSION_SUPPORTED) {
7277 memcpy(ctrl_info->firmware_version,
7278 identify->firmware_version_long,
7279 sizeof(identify->firmware_version_long));
7280 } else {
7281 memcpy(ctrl_info->firmware_version,
7282 identify->firmware_version_short,
7283 sizeof(identify->firmware_version_short));
7284 ctrl_info->firmware_version
7285 [sizeof(identify->firmware_version_short)] = '\0';
7286 snprintf(ctrl_info->firmware_version +
7287 strlen(ctrl_info->firmware_version),
7288 sizeof(ctrl_info->firmware_version) -
7289 sizeof(identify->firmware_version_short),
7290 "-%u",
7291 get_unaligned_le16(&identify->firmware_build_number));
7292 }
6c223761 7293
6d90615f
MB		 7294 memcpy(ctrl_info->model, identify->product_id,
7295 sizeof(identify->product_id));
7296 ctrl_info->model[sizeof(identify->product_id)] = '\0';
7297
7298 memcpy(ctrl_info->vendor, identify->vendor_id,
7299 sizeof(identify->vendor_id));
7300 ctrl_info->vendor[sizeof(identify->vendor_id)] = '\0';
7301
6c223761
KB		 7302out:
7303 kfree(identify);
7304
7305 return rc;
7306}
7307
b212c251
KB		 7308struct pqi_config_table_section_info {
7309 struct pqi_ctrl_info *ctrl_info;
7310 void *section;
7311 u32 section_offset;
7312 void __iomem *section_iomem_addr;
7313};
7314
7315static inline bool pqi_is_firmware_feature_supported(
7316 struct pqi_config_table_firmware_features *firmware_features,
7317 unsigned int bit_position)
98f87667 7318{
b212c251 7319 unsigned int byte_index;
98f87667 7320
b212c251 7321 byte_index = bit_position / BITS_PER_BYTE;
98f87667 7322
b212c251
KB		 7323 if (byte_index >= le16_to_cpu(firmware_features->num_elements))
7324 return false;
98f87667 7325
b212c251
KB		 7326 return firmware_features->features_supported[byte_index] &
7327 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
7328}
7329
7330static inline bool pqi_is_firmware_feature_enabled(
7331 struct pqi_config_table_firmware_features *firmware_features,
7332 void __iomem *firmware_features_iomem_addr,
7333 unsigned int bit_position)
7334{
7335 unsigned int byte_index;
7336 u8 __iomem *features_enabled_iomem_addr;
7337
7338 byte_index = (bit_position / BITS_PER_BYTE) +
7339 (le16_to_cpu(firmware_features->num_elements) * 2);
7340
7341 features_enabled_iomem_addr = firmware_features_iomem_addr +
7342 offsetof(struct pqi_config_table_firmware_features,
7343 features_supported) + byte_index;
7344
7345 return *((__force u8 *)features_enabled_iomem_addr) &
7346 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
7347}
7348
7349static inline void pqi_request_firmware_feature(
7350 struct pqi_config_table_firmware_features *firmware_features,
7351 unsigned int bit_position)
7352{
7353 unsigned int byte_index;
7354
7355 byte_index = (bit_position / BITS_PER_BYTE) +
7356 le16_to_cpu(firmware_features->num_elements);
7357
7358 firmware_features->features_supported[byte_index] |=
7359 (1 << (bit_position % BITS_PER_BYTE));
7360}
7361
7362static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info,
7363 u16 first_section, u16 last_section)
7364{
7365 struct pqi_vendor_general_request request;
7366
7367 memset(&request, 0, sizeof(request));
7368
7369 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
7370 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
7371 &request.header.iu_length);
7372 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE,
7373 &request.function_code);
7374 put_unaligned_le16(first_section,
7375 &request.data.config_table_update.first_section);
7376 put_unaligned_le16(last_section,
7377 &request.data.config_table_update.last_section);
7378
7379 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
7380 0, NULL, NO_TIMEOUT);
7381}
7382
7383static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info,
7384 struct pqi_config_table_firmware_features *firmware_features,
7385 void __iomem *firmware_features_iomem_addr)
7386{
7387 void *features_requested;
7388 void __iomem *features_requested_iomem_addr;
f6cc2a77 7389 void __iomem *host_max_known_feature_iomem_addr;
b212c251
KB		 7390
7391 features_requested = firmware_features->features_supported +
7392 le16_to_cpu(firmware_features->num_elements);
7393
7394 features_requested_iomem_addr = firmware_features_iomem_addr +
7395 (features_requested - (void *)firmware_features);
7396
7397 memcpy_toio(features_requested_iomem_addr, features_requested,
7398 le16_to_cpu(firmware_features->num_elements));
7399
f6cc2a77
KB		 7400 if (pqi_is_firmware_feature_supported(firmware_features,
7401 PQI_FIRMWARE_FEATURE_MAX_KNOWN_FEATURE)) {
7402 host_max_known_feature_iomem_addr =
7403 features_requested_iomem_addr +
7404 (le16_to_cpu(firmware_features->num_elements) * 2) +
7405 sizeof(__le16);
7406 writew(PQI_FIRMWARE_FEATURE_MAXIMUM,
7407 host_max_known_feature_iomem_addr);
7408 }
7409
b212c251
KB		 7410 return pqi_config_table_update(ctrl_info,
7411 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES,
7412 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES);
7413}
7414
7415struct pqi_firmware_feature {
7416 char *feature_name;
7417 unsigned int feature_bit;
7418 bool supported;
7419 bool enabled;
7420 void (*feature_status)(struct pqi_ctrl_info *ctrl_info,
7421 struct pqi_firmware_feature *firmware_feature);
7422};
7423
7424static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info,
7425 struct pqi_firmware_feature *firmware_feature)
7426{
7427 if (!firmware_feature->supported) {
7428 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n",
7429 firmware_feature->feature_name);
7430 return;
7431 }
7432
7433 if (firmware_feature->enabled) {
7434 dev_info(&ctrl_info->pci_dev->dev,
7435 "%s enabled\n", firmware_feature->feature_name);
7436 return;
7437 }
7438
7439 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n",
7440 firmware_feature->feature_name);
7441}
7442
21432010 7443static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info,
7444 struct pqi_firmware_feature *firmware_feature)
7445{
7446 switch (firmware_feature->feature_bit) {
f6cc2a77
KB		 7447 case PQI_FIRMWARE_FEATURE_RAID_1_WRITE_BYPASS:
7448 ctrl_info->enable_r1_writes = firmware_feature->enabled;
7449 break;
7450 case PQI_FIRMWARE_FEATURE_RAID_5_WRITE_BYPASS:
7451 ctrl_info->enable_r5_writes = firmware_feature->enabled;
7452 break;
7453 case PQI_FIRMWARE_FEATURE_RAID_6_WRITE_BYPASS:
7454 ctrl_info->enable_r6_writes = firmware_feature->enabled;
7455 break;
21432010 7456 case PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE:
7457 ctrl_info->soft_reset_handshake_supported =
7458 firmware_feature->enabled;
7459 break;
7460 case PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT:
583891c9 7461 ctrl_info->raid_iu_timeout_supported = firmware_feature->enabled;
21432010 7462 break;
c2922f17 7463 case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT:
583891c9 7464 ctrl_info->tmf_iu_timeout_supported = firmware_feature->enabled;
c2922f17 7465 break;
21432010 7466 }
7467
7468 pqi_firmware_feature_status(ctrl_info, firmware_feature);
7469}
7470
b212c251
KB		 7471static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info,
7472 struct pqi_firmware_feature *firmware_feature)
7473{
7474 if (firmware_feature->feature_status)
7475 firmware_feature->feature_status(ctrl_info, firmware_feature);
7476}
7477
7478static DEFINE_MUTEX(pqi_firmware_features_mutex);
7479
7480static struct pqi_firmware_feature pqi_firmware_features[] = {
7481 {
7482 .feature_name = "Online Firmware Activation",
7483 .feature_bit = PQI_FIRMWARE_FEATURE_OFA,
7484 .feature_status = pqi_firmware_feature_status,
7485 },
7486 {
7487 .feature_name = "Serial Management Protocol",
7488 .feature_bit = PQI_FIRMWARE_FEATURE_SMP,
7489 .feature_status = pqi_firmware_feature_status,
7490 },
f6cc2a77
KB		 7491 {
7492 .feature_name = "Maximum Known Feature",
7493 .feature_bit = PQI_FIRMWARE_FEATURE_MAX_KNOWN_FEATURE,
7494 .feature_status = pqi_firmware_feature_status,
7495 },
7496 {
7497 .feature_name = "RAID 0 Read Bypass",
7498 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_0_READ_BYPASS,
7499 .feature_status = pqi_firmware_feature_status,
7500 },
7501 {
7502 .feature_name = "RAID 1 Read Bypass",
7503 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_1_READ_BYPASS,
7504 .feature_status = pqi_firmware_feature_status,
7505 },
7506 {
7507 .feature_name = "RAID 5 Read Bypass",
7508 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_5_READ_BYPASS,
7509 .feature_status = pqi_firmware_feature_status,
7510 },
7511 {
7512 .feature_name = "RAID 6 Read Bypass",
7513 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_6_READ_BYPASS,
7514 .feature_status = pqi_firmware_feature_status,
7515 },
7516 {
7517 .feature_name = "RAID 0 Write Bypass",
7518 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_0_WRITE_BYPASS,
7519 .feature_status = pqi_firmware_feature_status,
7520 },
7521 {
7522 .feature_name = "RAID 1 Write Bypass",
7523 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_1_WRITE_BYPASS,
7524 .feature_status = pqi_ctrl_update_feature_flags,
7525 },
7526 {
7527 .feature_name = "RAID 5 Write Bypass",
7528 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_5_WRITE_BYPASS,
7529 .feature_status = pqi_ctrl_update_feature_flags,
7530 },
7531 {
7532 .feature_name = "RAID 6 Write Bypass",
7533 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_6_WRITE_BYPASS,
7534 .feature_status = pqi_ctrl_update_feature_flags,
7535 },
4fd22c13
MR		 7536 {
7537 .feature_name = "New Soft Reset Handshake",
7538 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE,
21432010 7539 .feature_status = pqi_ctrl_update_feature_flags,
7540 },
7541 {
7542 .feature_name = "RAID IU Timeout",
7543 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT,
7544 .feature_status = pqi_ctrl_update_feature_flags,
4fd22c13 7545 },
c2922f17
MB		 7546 {
7547 .feature_name = "TMF IU Timeout",
7548 .feature_bit = PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT,
7549 .feature_status = pqi_ctrl_update_feature_flags,
7550 },
f6cc2a77
KB		 7551 {
7552 .feature_name = "RAID Bypass on encrypted logical volumes on NVMe",
7553 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_BYPASS_ON_ENCRYPTED_NVME,
7554 .feature_status = pqi_firmware_feature_status,
7555 },
b212c251
KB		 7556};
7557
7558static void pqi_process_firmware_features(
7559 struct pqi_config_table_section_info *section_info)
7560{
7561 int rc;
7562 struct pqi_ctrl_info *ctrl_info;
7563 struct pqi_config_table_firmware_features *firmware_features;
7564 void __iomem *firmware_features_iomem_addr;
7565 unsigned int i;
7566 unsigned int num_features_supported;
7567
7568 ctrl_info = section_info->ctrl_info;
7569 firmware_features = section_info->section;
7570 firmware_features_iomem_addr = section_info->section_iomem_addr;
7571
7572 for (i = 0, num_features_supported = 0;
7573 i < ARRAY_SIZE(pqi_firmware_features); i++) {
7574 if (pqi_is_firmware_feature_supported(firmware_features,
7575 pqi_firmware_features[i].feature_bit)) {
7576 pqi_firmware_features[i].supported = true;
7577 num_features_supported++;
7578 } else {
7579 pqi_firmware_feature_update(ctrl_info,
7580 &pqi_firmware_features[i]);
7581 }
7582 }
7583
7584 if (num_features_supported == 0)
7585 return;
7586
7587 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7588 if (!pqi_firmware_features[i].supported)
7589 continue;
7590 pqi_request_firmware_feature(firmware_features,
7591 pqi_firmware_features[i].feature_bit);
7592 }
7593
7594 rc = pqi_enable_firmware_features(ctrl_info, firmware_features,
7595 firmware_features_iomem_addr);
7596 if (rc) {
7597 dev_err(&ctrl_info->pci_dev->dev,
7598 "failed to enable firmware features in PQI configuration table\n");
7599 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7600 if (!pqi_firmware_features[i].supported)
7601 continue;
7602 pqi_firmware_feature_update(ctrl_info,
7603 &pqi_firmware_features[i]);
7604 }
7605 return;
7606 }
7607
7608 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7609 if (!pqi_firmware_features[i].supported)
7610 continue;
7611 if (pqi_is_firmware_feature_enabled(firmware_features,
7612 firmware_features_iomem_addr,
4fd22c13 7613 pqi_firmware_features[i].feature_bit)) {
583891c9 7614 pqi_firmware_features[i].enabled = true;
4fd22c13 7615 }
b212c251
KB		 7616 pqi_firmware_feature_update(ctrl_info,
7617 &pqi_firmware_features[i]);
7618 }
7619}
7620
7621static void pqi_init_firmware_features(void)
7622{
7623 unsigned int i;
7624
7625 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7626 pqi_firmware_features[i].supported = false;
7627 pqi_firmware_features[i].enabled = false;
7628 }
7629}
7630
7631static void pqi_process_firmware_features_section(
7632 struct pqi_config_table_section_info *section_info)
7633{
7634 mutex_lock(&pqi_firmware_features_mutex);
7635 pqi_init_firmware_features();
7636 pqi_process_firmware_features(section_info);
7637 mutex_unlock(&pqi_firmware_features_mutex);
7638}
7639
f6cc2a77
KB		 7640/*
7641 * Reset all controller settings that can be initialized during the processing
7642 * of the PQI Configuration Table.
7643 */
7644
98f87667
KB		 7645static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
7646{
7647 u32 table_length;
7648 u32 section_offset;
f6cc2a77 7649 bool firmware_feature_section_present;
98f87667
KB		 7650 void __iomem *table_iomem_addr;
7651 struct pqi_config_table *config_table;
7652 struct pqi_config_table_section_header *section;
b212c251 7653 struct pqi_config_table_section_info section_info;
f6cc2a77 7654 struct pqi_config_table_section_info feature_section_info;
98f87667
KB		 7655
7656 table_length = ctrl_info->config_table_length;
b212c251
KB		 7657 if (table_length == 0)
7658 return 0;
98f87667
KB		 7659
7660 config_table = kmalloc(table_length, GFP_KERNEL);
7661 if (!config_table) {
7662 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 7663 "failed to allocate memory for PQI configuration table\n");
98f87667
KB		 7664 return -ENOMEM;
7665 }
7666
7667 /*
7668 * Copy the config table contents from I/O memory space into the
7669 * temporary buffer.
7670 */
583891c9 7671 table_iomem_addr = ctrl_info->iomem_base + ctrl_info->config_table_offset;
98f87667
KB		 7672 memcpy_fromio(config_table, table_iomem_addr, table_length);
7673
f6cc2a77 7674 firmware_feature_section_present = false;
b212c251 7675 section_info.ctrl_info = ctrl_info;
583891c9 7676 section_offset = get_unaligned_le32(&config_table->first_section_offset);
98f87667
KB		 7677
7678 while (section_offset) {
7679 section = (void *)config_table + section_offset;
7680
b212c251
KB		 7681 section_info.section = section;
7682 section_info.section_offset = section_offset;
583891c9 7683 section_info.section_iomem_addr = table_iomem_addr + section_offset;
b212c251 7684
98f87667 7685 switch (get_unaligned_le16(&section->section_id)) {
b212c251 7686 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES:
f6cc2a77
KB		 7687 firmware_feature_section_present = true;
7688 feature_section_info = section_info;
b212c251 7689 break;
98f87667 7690 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
5a259e32
KB		 7691 if (pqi_disable_heartbeat)
7692 dev_warn(&ctrl_info->pci_dev->dev,
7693 "heartbeat disabled by module parameter\n");
7694 else
7695 ctrl_info->heartbeat_counter =
7696 table_iomem_addr +
7697 section_offset +
583891c9 7698 offsetof(struct pqi_config_table_heartbeat,
5a259e32 7699 heartbeat_counter);
98f87667 7700 break;
4fd22c13
MR		 7701 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET:
7702 ctrl_info->soft_reset_status =
7703 table_iomem_addr +
7704 section_offset +
7705 offsetof(struct pqi_config_table_soft_reset,
583891c9 7706 soft_reset_status);
4fd22c13 7707 break;
98f87667
KB		 7708 }
7709
583891c9 7710 section_offset = get_unaligned_le16(&section->next_section_offset);
98f87667
KB		 7711 }
7712
f6cc2a77
KB		 7713 /*
7714 * We process the firmware feature section after all other sections
7715 * have been processed so that the feature bit callbacks can take
7716 * into account the settings configured by other sections.
7717 */
7718 if (firmware_feature_section_present)
7719 pqi_process_firmware_features_section(&feature_section_info);
7720
98f87667
KB		 7721 kfree(config_table);
7722
7723 return 0;
7724}
7725
162d7753
KB		 7726/* Switches the controller from PQI mode back into SIS mode. */
7727
7728static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
7729{
7730 int rc;
7731
061ef06a 7732 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
162d7753
KB		 7733 rc = pqi_reset(ctrl_info);
7734 if (rc)
7735 return rc;
4f078e24
KB		 7736 rc = sis_reenable_sis_mode(ctrl_info);
7737 if (rc) {
7738 dev_err(&ctrl_info->pci_dev->dev,
7739 "re-enabling SIS mode failed with error %d\n", rc);
7740 return rc;
7741 }
162d7753
KB		 7742 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7743
7744 return 0;
7745}
7746
7747/*
7748 * If the controller isn't already in SIS mode, this function forces it into
7749 * SIS mode.
7750 */
7751
7752static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
ff6abb73
KB		 7753{
7754 if (!sis_is_firmware_running(ctrl_info))
7755 return -ENXIO;
7756
162d7753
KB		 7757 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
7758 return 0;
7759
7760 if (sis_is_kernel_up(ctrl_info)) {
7761 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7762 return 0;
ff6abb73
KB		 7763 }
7764
162d7753 7765 return pqi_revert_to_sis_mode(ctrl_info);
ff6abb73
KB		 7766}
7767
0530736e
KB		 7768#define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000
7769
6c223761
KB		 7770static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
7771{
7772 int rc;
2708a256 7773 u32 product_id;
6c223761 7774
0530736e
KB		 7775 if (reset_devices) {
7776 sis_soft_reset(ctrl_info);
7777 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY);
7778 } else {
7779 rc = pqi_force_sis_mode(ctrl_info);
7780 if (rc)
7781 return rc;
7782 }
6c223761
KB		 7783
7784 /*
7785 * Wait until the controller is ready to start accepting SIS
7786 * commands.
7787 */
7788 rc = sis_wait_for_ctrl_ready(ctrl_info);
8845fdfa 7789 if (rc)
6c223761 7790 return rc;
6c223761
KB		 7791
7792 /*
7793 * Get the controller properties. This allows us to determine
7794 * whether or not it supports PQI mode.
7795 */
7796 rc = sis_get_ctrl_properties(ctrl_info);
7797 if (rc) {
7798 dev_err(&ctrl_info->pci_dev->dev,
7799 "error obtaining controller properties\n");
7800 return rc;
7801 }
7802
7803 rc = sis_get_pqi_capabilities(ctrl_info);
7804 if (rc) {
7805 dev_err(&ctrl_info->pci_dev->dev,
7806 "error obtaining controller capabilities\n");
7807 return rc;
7808 }
7809
2708a256
KB		 7810 product_id = sis_get_product_id(ctrl_info);
7811 ctrl_info->product_id = (u8)product_id;
7812 ctrl_info->product_revision = (u8)(product_id >> 8);
7813
d727a776
KB		 7814 if (reset_devices) {
7815 if (ctrl_info->max_outstanding_requests >
7816 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
583891c9 7817 ctrl_info->max_outstanding_requests =
d727a776
KB		 7818 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
7819 } else {
7820 if (ctrl_info->max_outstanding_requests >
7821 PQI_MAX_OUTSTANDING_REQUESTS)
583891c9 7822 ctrl_info->max_outstanding_requests =
d727a776
KB		 7823 PQI_MAX_OUTSTANDING_REQUESTS;
7824 }
6c223761
KB		 7825
7826 pqi_calculate_io_resources(ctrl_info);
7827
7828 rc = pqi_alloc_error_buffer(ctrl_info);
7829 if (rc) {
7830 dev_err(&ctrl_info->pci_dev->dev,
7831 "failed to allocate PQI error buffer\n");
7832 return rc;
7833 }
7834
7835 /*
7836 * If the function we are about to call succeeds, the
7837 * controller will transition from legacy SIS mode
7838 * into PQI mode.
7839 */
7840 rc = sis_init_base_struct_addr(ctrl_info);
7841 if (rc) {
7842 dev_err(&ctrl_info->pci_dev->dev,
7843 "error initializing PQI mode\n");
7844 return rc;
7845 }
7846
7847 /* Wait for the controller to complete the SIS -> PQI transition. */
7848 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
7849 if (rc) {
7850 dev_err(&ctrl_info->pci_dev->dev,
7851 "transition to PQI mode failed\n");
7852 return rc;
7853 }
7854
7855 /* From here on, we are running in PQI mode. */
7856 ctrl_info->pqi_mode_enabled = true;
ff6abb73 7857 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6c223761
KB		 7858
7859 rc = pqi_alloc_admin_queues(ctrl_info);
7860 if (rc) {
7861 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 7862 "failed to allocate admin queues\n");
6c223761
KB		 7863 return rc;
7864 }
7865
7866 rc = pqi_create_admin_queues(ctrl_info);
7867 if (rc) {
7868 dev_err(&ctrl_info->pci_dev->dev,
7869 "error creating admin queues\n");
7870 return rc;
7871 }
7872
7873 rc = pqi_report_device_capability(ctrl_info);
7874 if (rc) {
7875 dev_err(&ctrl_info->pci_dev->dev,
7876 "obtaining device capability failed\n");
7877 return rc;
7878 }
7879
7880 rc = pqi_validate_device_capability(ctrl_info);
7881 if (rc)
7882 return rc;
7883
7884 pqi_calculate_queue_resources(ctrl_info);
7885
7886 rc = pqi_enable_msix_interrupts(ctrl_info);
7887 if (rc)
7888 return rc;
7889
7890 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
7891 ctrl_info->max_msix_vectors =
7892 ctrl_info->num_msix_vectors_enabled;
7893 pqi_calculate_queue_resources(ctrl_info);
7894 }
7895
7896 rc = pqi_alloc_io_resources(ctrl_info);
7897 if (rc)
7898 return rc;
7899
7900 rc = pqi_alloc_operational_queues(ctrl_info);
d87d5474
KB		 7901 if (rc) {
7902 dev_err(&ctrl_info->pci_dev->dev,
7903 "failed to allocate operational queues\n");
6c223761 7904 return rc;
d87d5474 7905 }
6c223761
KB		 7906
7907 pqi_init_operational_queues(ctrl_info);
7908
7909 rc = pqi_request_irqs(ctrl_info);
7910 if (rc)
7911 return rc;
7912
6c223761
KB		 7913 rc = pqi_create_queues(ctrl_info);
7914 if (rc)
7915 return rc;
7916
061ef06a
KB		 7917 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7918
7919 ctrl_info->controller_online = true;
b212c251
KB		 7920
7921 rc = pqi_process_config_table(ctrl_info);
7922 if (rc)
7923 return rc;
7924
061ef06a 7925 pqi_start_heartbeat_timer(ctrl_info);
6c223761 7926
f6cc2a77
KB		 7927 if (ctrl_info->enable_r5_writes || ctrl_info->enable_r6_writes) {
7928 rc = pqi_get_advanced_raid_bypass_config(ctrl_info);
7929 if (rc) { /* Supported features not returned correctly. */
7930 dev_err(&ctrl_info->pci_dev->dev,
7931 "error obtaining advanced RAID bypass configuration\n");
7932 return rc;
7933 }
7934 ctrl_info->ciss_report_log_flags |=
7935 CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX;
7936 }
7937
6a50d6ad 7938 rc = pqi_enable_events(ctrl_info);
6c223761
KB		 7939 if (rc) {
7940 dev_err(&ctrl_info->pci_dev->dev,
6a50d6ad 7941 "error enabling events\n");
6c223761
KB		 7942 return rc;
7943 }
7944
6c223761
KB		 7945 /* Register with the SCSI subsystem. */
7946 rc = pqi_register_scsi(ctrl_info);
7947 if (rc)
7948 return rc;
7949
6d90615f
MB		 7950 rc = pqi_get_ctrl_product_details(ctrl_info);
7951 if (rc) {
7952 dev_err(&ctrl_info->pci_dev->dev,
7953 "error obtaining product details\n");
7954 return rc;
7955 }
7956
7957 rc = pqi_get_ctrl_serial_number(ctrl_info);
6c223761
KB		 7958 if (rc) {
7959 dev_err(&ctrl_info->pci_dev->dev,
6d90615f 7960 "error obtaining ctrl serial number\n");
6c223761
KB		 7961 return rc;
7962 }
7963
171c2865
DC		 7964 rc = pqi_set_diag_rescan(ctrl_info);
7965 if (rc) {
7966 dev_err(&ctrl_info->pci_dev->dev,
7967 "error enabling multi-lun rescan\n");
7968 return rc;
7969 }
7970
6c223761
KB		 7971 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7972 if (rc) {
7973 dev_err(&ctrl_info->pci_dev->dev,
7974 "error updating host wellness\n");
7975 return rc;
7976 }
7977
7978 pqi_schedule_update_time_worker(ctrl_info);
7979
7980 pqi_scan_scsi_devices(ctrl_info);
7981
7982 return 0;
7983}
7984
061ef06a
KB		 7985static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
7986{
7987 unsigned int i;
7988 struct pqi_admin_queues *admin_queues;
7989 struct pqi_event_queue *event_queue;
7990
7991 admin_queues = &ctrl_info->admin_queues;
7992 admin_queues->iq_pi_copy = 0;
7993 admin_queues->oq_ci_copy = 0;
dac12fbc 7994 writel(0, admin_queues->oq_pi);
061ef06a
KB		 7995
7996 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
7997 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
7998 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
7999 ctrl_info->queue_groups[i].oq_ci_copy = 0;
8000
dac12fbc
KB		 8001 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]);
8002 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]);
8003 writel(0, ctrl_info->queue_groups[i].oq_pi);
061ef06a
KB		 8004 }
8005
8006 event_queue = &ctrl_info->event_queue;
dac12fbc 8007 writel(0, event_queue->oq_pi);
061ef06a
KB		 8008 event_queue->oq_ci_copy = 0;
8009}
8010
8011static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
8012{
8013 int rc;
8014
8015 rc = pqi_force_sis_mode(ctrl_info);
8016 if (rc)
8017 return rc;
8018
8019 /*
8020 * Wait until the controller is ready to start accepting SIS
8021 * commands.
8022 */
8023 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
8024 if (rc)
8025 return rc;
8026
4fd22c13
MR		 8027 /*
8028 * Get the controller properties. This allows us to determine
8029 * whether or not it supports PQI mode.
8030 */
8031 rc = sis_get_ctrl_properties(ctrl_info);
8032 if (rc) {
8033 dev_err(&ctrl_info->pci_dev->dev,
8034 "error obtaining controller properties\n");
8035 return rc;
8036 }
8037
8038 rc = sis_get_pqi_capabilities(ctrl_info);
8039 if (rc) {
8040 dev_err(&ctrl_info->pci_dev->dev,
8041 "error obtaining controller capabilities\n");
8042 return rc;
8043 }
8044
061ef06a
KB		 8045 /*
8046 * If the function we are about to call succeeds, the
8047 * controller will transition from legacy SIS mode
8048 * into PQI mode.
8049 */
8050 rc = sis_init_base_struct_addr(ctrl_info);
8051 if (rc) {
8052 dev_err(&ctrl_info->pci_dev->dev,
8053 "error initializing PQI mode\n");
8054 return rc;
8055 }
8056
8057 /* Wait for the controller to complete the SIS -> PQI transition. */
8058 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
8059 if (rc) {
8060 dev_err(&ctrl_info->pci_dev->dev,
8061 "transition to PQI mode failed\n");
8062 return rc;
8063 }
8064
8065 /* From here on, we are running in PQI mode. */
8066 ctrl_info->pqi_mode_enabled = true;
8067 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
8068
8069 pqi_reinit_queues(ctrl_info);
8070
8071 rc = pqi_create_admin_queues(ctrl_info);
8072 if (rc) {
8073 dev_err(&ctrl_info->pci_dev->dev,
8074 "error creating admin queues\n");
8075 return rc;
8076 }
8077
8078 rc = pqi_create_queues(ctrl_info);
8079 if (rc)
8080 return rc;
8081
8082 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
8083
8084 ctrl_info->controller_online = true;
061ef06a
KB		 8085 pqi_ctrl_unblock_requests(ctrl_info);
8086
4fd22c13
MR		 8087 rc = pqi_process_config_table(ctrl_info);
8088 if (rc)
8089 return rc;
8090
8091 pqi_start_heartbeat_timer(ctrl_info);
8092
f6cc2a77
KB		 8093 if (ctrl_info->enable_r5_writes || ctrl_info->enable_r6_writes) {
8094 rc = pqi_get_advanced_raid_bypass_config(ctrl_info);
8095 if (rc) {
8096 dev_err(&ctrl_info->pci_dev->dev,
8097 "error obtaining advanced RAID bypass configuration\n");
8098 return rc;
8099 }
8100 ctrl_info->ciss_report_log_flags |=
8101 CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX;
8102 }
8103
061ef06a
KB		 8104 rc = pqi_enable_events(ctrl_info);
8105 if (rc) {
8106 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 8107 "error enabling events\n");
061ef06a
KB		 8108 return rc;
8109 }
8110
6d90615f 8111 rc = pqi_get_ctrl_product_details(ctrl_info);
4fd22c13
MR		 8112 if (rc) {
8113 dev_err(&ctrl_info->pci_dev->dev,
694c5d5b 8114 "error obtaining product details\n");
4fd22c13
MR		 8115 return rc;
8116 }
8117
171c2865
DC		 8118 rc = pqi_set_diag_rescan(ctrl_info);
8119 if (rc) {
8120 dev_err(&ctrl_info->pci_dev->dev,
8121 "error enabling multi-lun rescan\n");
8122 return rc;
8123 }
8124
061ef06a
KB		 8125 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
8126 if (rc) {
8127 dev_err(&ctrl_info->pci_dev->dev,
8128 "error updating host wellness\n");
8129 return rc;
8130 }
8131
8132 pqi_schedule_update_time_worker(ctrl_info);
8133
8134 pqi_scan_scsi_devices(ctrl_info);
8135
8136 return 0;
8137}
8138
583891c9 8139static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev, u16 timeout)
a81ed5f3 8140{
d20df83b
BOS		 8141 int rc;
8142
8143 rc = pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
a81ed5f3 8144 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
d20df83b
BOS		 8145
8146 return pcibios_err_to_errno(rc);
a81ed5f3
KB		 8147}
8148
6c223761
KB		 8149static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
8150{
8151 int rc;
8152 u64 mask;
8153
8154 rc = pci_enable_device(ctrl_info->pci_dev);
8155 if (rc) {
8156 dev_err(&ctrl_info->pci_dev->dev,
8157 "failed to enable PCI device\n");
8158 return rc;
8159 }
8160
8161 if (sizeof(dma_addr_t) > 4)
8162 mask = DMA_BIT_MASK(64);
8163 else
8164 mask = DMA_BIT_MASK(32);
8165
1d94f06e 8166 rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask);
6c223761
KB		 8167 if (rc) {
8168 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
8169 goto disable_device;
8170 }
8171
8172 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
8173 if (rc) {
8174 dev_err(&ctrl_info->pci_dev->dev,
8175 "failed to obtain PCI resources\n");
8176 goto disable_device;
8177 }
8178
4bdc0d67 8179 ctrl_info->iomem_base = ioremap(pci_resource_start(
6c223761
KB		 8180 ctrl_info->pci_dev, 0),
8181 sizeof(struct pqi_ctrl_registers));
8182 if (!ctrl_info->iomem_base) {
8183 dev_err(&ctrl_info->pci_dev->dev,
8184 "failed to map memory for controller registers\n");
8185 rc = -ENOMEM;
8186 goto release_regions;
8187 }
8188
a81ed5f3
KB		 8189#define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
8190
8191 /* Increase the PCIe completion timeout. */
8192 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
8193 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
8194 if (rc) {
8195 dev_err(&ctrl_info->pci_dev->dev,
8196 "failed to set PCIe completion timeout\n");
8197 goto release_regions;
8198 }
8199
6c223761
KB		 8200 /* Enable bus mastering. */
8201 pci_set_master(ctrl_info->pci_dev);
8202
cbe0c7b1
KB		 8203 ctrl_info->registers = ctrl_info->iomem_base;
8204 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
8205
6c223761
KB		 8206 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
8207
8208 return 0;
8209
8210release_regions:
8211 pci_release_regions(ctrl_info->pci_dev);
8212disable_device:
8213 pci_disable_device(ctrl_info->pci_dev);
8214
8215 return rc;
8216}
8217
8218static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
8219{
8220 iounmap(ctrl_info->iomem_base);
8221 pci_release_regions(ctrl_info->pci_dev);
cbe0c7b1
KB		 8222 if (pci_is_enabled(ctrl_info->pci_dev))
8223 pci_disable_device(ctrl_info->pci_dev);
6c223761
KB		 8224 pci_set_drvdata(ctrl_info->pci_dev, NULL);
8225}
8226
8227static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
8228{
8229 struct pqi_ctrl_info *ctrl_info;
8230
8231 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
8232 GFP_KERNEL, numa_node);
8233 if (!ctrl_info)
8234 return NULL;
8235
8236 mutex_init(&ctrl_info->scan_mutex);
7561a7e4 8237 mutex_init(&ctrl_info->lun_reset_mutex);
4fd22c13 8238 mutex_init(&ctrl_info->ofa_mutex);
6c223761
KB		 8239
8240 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
8241 spin_lock_init(&ctrl_info->scsi_device_list_lock);
8242
8243 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
8244 atomic_set(&ctrl_info->num_interrupts, 0);
0530736e 8245 atomic_set(&ctrl_info->sync_cmds_outstanding, 0);
6c223761
KB		 8246
8247 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
8248 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
8249
74a0f573 8250 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
5f310425 8251 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
98f87667 8252
6c223761
KB		 8253 sema_init(&ctrl_info->sync_request_sem,
8254 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
7561a7e4 8255 init_waitqueue_head(&ctrl_info->block_requests_wait);
6c223761 8256
376fb880
KB		 8257 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
8258 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
8259 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
8260 pqi_raid_bypass_retry_worker);
8261
6c223761 8262 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
061ef06a 8263 ctrl_info->irq_mode = IRQ_MODE_NONE;
6c223761
KB		 8264 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
8265
f6cc2a77
KB		 8266 ctrl_info->ciss_report_log_flags = CISS_REPORT_LOG_FLAG_UNIQUE_LUN_ID;
8267 ctrl_info->max_transfer_encrypted_sas_sata =
8268 PQI_DEFAULT_MAX_TRANSFER_ENCRYPTED_SAS_SATA;
8269 ctrl_info->max_transfer_encrypted_nvme =
8270 PQI_DEFAULT_MAX_TRANSFER_ENCRYPTED_NVME;
8271 ctrl_info->max_write_raid_5_6 = PQI_DEFAULT_MAX_WRITE_RAID_5_6;
8272 ctrl_info->max_write_raid_1_10_2drive = ~0;
8273 ctrl_info->max_write_raid_1_10_3drive = ~0;
8274
6c223761
KB		 8275 return ctrl_info;
8276}
8277
8278static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
8279{
8280 kfree(ctrl_info);
8281}
8282
8283static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
8284{
98bf061b
KB		 8285 pqi_free_irqs(ctrl_info);
8286 pqi_disable_msix_interrupts(ctrl_info);
6c223761
KB		 8287}
8288
8289static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
8290{
8291 pqi_stop_heartbeat_timer(ctrl_info);
8292 pqi_free_interrupts(ctrl_info);
8293 if (ctrl_info->queue_memory_base)
8294 dma_free_coherent(&ctrl_info->pci_dev->dev,
8295 ctrl_info->queue_memory_length,
8296 ctrl_info->queue_memory_base,
8297 ctrl_info->queue_memory_base_dma_handle);
8298 if (ctrl_info->admin_queue_memory_base)
8299 dma_free_coherent(&ctrl_info->pci_dev->dev,
8300 ctrl_info->admin_queue_memory_length,
8301 ctrl_info->admin_queue_memory_base,
8302 ctrl_info->admin_queue_memory_base_dma_handle);
8303 pqi_free_all_io_requests(ctrl_info);
8304 if (ctrl_info->error_buffer)
8305 dma_free_coherent(&ctrl_info->pci_dev->dev,
8306 ctrl_info->error_buffer_length,
8307 ctrl_info->error_buffer,
8308 ctrl_info->error_buffer_dma_handle);
8309 if (ctrl_info->iomem_base)
8310 pqi_cleanup_pci_init(ctrl_info);
8311 pqi_free_ctrl_info(ctrl_info);
8312}
8313
8314static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
8315{
061ef06a
KB		 8316 pqi_cancel_rescan_worker(ctrl_info);
8317 pqi_cancel_update_time_worker(ctrl_info);
e57a1f9b 8318 pqi_unregister_scsi(ctrl_info);
162d7753
KB		 8319 if (ctrl_info->pqi_mode_enabled)
8320 pqi_revert_to_sis_mode(ctrl_info);
6c223761
KB		 8321 pqi_free_ctrl_resources(ctrl_info);
8322}
8323
4fd22c13
MR		 8324static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info)
8325{
8326 pqi_cancel_update_time_worker(ctrl_info);
8327 pqi_cancel_rescan_worker(ctrl_info);
8328 pqi_wait_until_lun_reset_finished(ctrl_info);
8329 pqi_wait_until_scan_finished(ctrl_info);
8330 pqi_ctrl_ofa_start(ctrl_info);
8331 pqi_ctrl_block_requests(ctrl_info);
8332 pqi_ctrl_wait_until_quiesced(ctrl_info);
8333 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS);
8334 pqi_fail_io_queued_for_all_devices(ctrl_info);
8335 pqi_wait_until_inbound_queues_empty(ctrl_info);
8336 pqi_stop_heartbeat_timer(ctrl_info);
8337 ctrl_info->pqi_mode_enabled = false;
8338 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
8339}
8340
8341static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info)
8342{
8343 pqi_ofa_free_host_buffer(ctrl_info);
8344 ctrl_info->pqi_mode_enabled = true;
8345 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
8346 ctrl_info->controller_online = true;
8347 pqi_ctrl_unblock_requests(ctrl_info);
8348 pqi_start_heartbeat_timer(ctrl_info);
8349 pqi_schedule_update_time_worker(ctrl_info);
8350 pqi_clear_soft_reset_status(ctrl_info,
8351 PQI_SOFT_RESET_ABORT);
8352 pqi_scan_scsi_devices(ctrl_info);
8353}
8354
8355static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info,
8356 u32 total_size, u32 chunk_size)
8357{
8358 u32 sg_count;
8359 u32 size;
8360 int i;
8361 struct pqi_sg_descriptor *mem_descriptor = NULL;
8362 struct device *dev;
8363 struct pqi_ofa_memory *ofap;
8364
8365 dev = &ctrl_info->pci_dev->dev;
8366
8367 sg_count = (total_size + chunk_size - 1);
e52c9e07 8368 sg_count /= chunk_size;
4fd22c13
MR		 8369
8370 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
8371
8372 if (sg_count*chunk_size < total_size)
8373 goto out;
8374
8375 ctrl_info->pqi_ofa_chunk_virt_addr =
8376 kcalloc(sg_count, sizeof(void *), GFP_KERNEL);
8377 if (!ctrl_info->pqi_ofa_chunk_virt_addr)
8378 goto out;
8379
8380 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) {
8381 dma_addr_t dma_handle;
8382
8383 ctrl_info->pqi_ofa_chunk_virt_addr[i] =
750afb08
LC		 8384 dma_alloc_coherent(dev, chunk_size, &dma_handle,
8385 GFP_KERNEL);
4fd22c13
MR		 8386
8387 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i])
8388 break;
8389
8390 mem_descriptor = &ofap->sg_descriptor[i];
583891c9
KB		 8391 put_unaligned_le64((u64)dma_handle, &mem_descriptor->address);
8392 put_unaligned_le32(chunk_size, &mem_descriptor->length);
4fd22c13
MR		 8393 }
8394
8395 if (!size || size < total_size)
8396 goto out_free_chunks;
8397
8398 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags);
8399 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors);
8400 put_unaligned_le32(size, &ofap->bytes_allocated);
8401
8402 return 0;
8403
8404out_free_chunks:
8405 while (--i >= 0) {
8406 mem_descriptor = &ofap->sg_descriptor[i];
8407 dma_free_coherent(dev, chunk_size,
8408 ctrl_info->pqi_ofa_chunk_virt_addr[i],
8409 get_unaligned_le64(&mem_descriptor->address));
8410 }
8411 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
8412
8413out:
8414 put_unaligned_le32 (0, &ofap->bytes_allocated);
8415 return -ENOMEM;
8416}
8417
8418static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info)
8419{
8420 u32 total_size;
8421 u32 min_chunk_size;
8422 u32 chunk_sz;
8423
8424 total_size = le32_to_cpu(
8425 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated);
8426 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS;
8427
8428 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2)
8429 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz))
8430 return 0;
8431
8432 return -ENOMEM;
8433}
8434
8435static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
8436 u32 bytes_requested)
8437{
8438 struct pqi_ofa_memory *pqi_ofa_memory;
8439 struct device *dev;
8440
8441 dev = &ctrl_info->pci_dev->dev;
750afb08
LC		 8442 pqi_ofa_memory = dma_alloc_coherent(dev,
8443 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH,
8444 &ctrl_info->pqi_ofa_mem_dma_handle,
8445 GFP_KERNEL);
4fd22c13
MR		 8446
8447 if (!pqi_ofa_memory)
8448 return;
8449
8450 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version);
8451 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE,
8452 sizeof(pqi_ofa_memory->signature));
8453 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested);
8454
8455 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory;
8456
8457 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) {
8458 dev_err(dev, "Failed to allocate host buffer of size = %u",
8459 bytes_requested);
8460 }
694c5d5b
KB		 8461
8462 return;
4fd22c13
MR		 8463}
8464
8465static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info)
8466{
8467 int i;
8468 struct pqi_sg_descriptor *mem_descriptor;
8469 struct pqi_ofa_memory *ofap;
8470
8471 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
8472
8473 if (!ofap)
8474 return;
8475
8476 if (!ofap->bytes_allocated)
8477 goto out;
8478
8479 mem_descriptor = ofap->sg_descriptor;
8480
8481 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors);
8482 i++) {
8483 dma_free_coherent(&ctrl_info->pci_dev->dev,
8484 get_unaligned_le32(&mem_descriptor[i].length),
8485 ctrl_info->pqi_ofa_chunk_virt_addr[i],
8486 get_unaligned_le64(&mem_descriptor[i].address));
8487 }
8488 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
8489
8490out:
8491 dma_free_coherent(&ctrl_info->pci_dev->dev,
8492 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap,
8493 ctrl_info->pqi_ofa_mem_dma_handle);
8494 ctrl_info->pqi_ofa_mem_virt_addr = NULL;
8495}
8496
8497static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info)
8498{
8499 struct pqi_vendor_general_request request;
8500 size_t size;
8501 struct pqi_ofa_memory *ofap;
8502
8503 memset(&request, 0, sizeof(request));
8504
8505 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
8506
8507 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
8508 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
8509 &request.header.iu_length);
8510 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE,
8511 &request.function_code);
8512
8513 if (ofap) {
8514 size = offsetof(struct pqi_ofa_memory, sg_descriptor) +
8515 get_unaligned_le16(&ofap->num_memory_descriptors) *
8516 sizeof(struct pqi_sg_descriptor);
8517
8518 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle,
8519 &request.data.ofa_memory_allocation.buffer_address);
8520 put_unaligned_le32(size,
8521 &request.data.ofa_memory_allocation.buffer_length);
8522
8523 }
8524
8525 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
8526 0, NULL, NO_TIMEOUT);
8527}
8528
4fd22c13
MR		 8529static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info)
8530{
8531 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY);
8532 return pqi_ctrl_init_resume(ctrl_info);
8533}
8534
3c50976f
KB		 8535static void pqi_perform_lockup_action(void)
8536{
8537 switch (pqi_lockup_action) {
8538 case PANIC:
8539 panic("FATAL: Smart Family Controller lockup detected");
8540 break;
8541 case REBOOT:
8542 emergency_restart();
8543 break;
8544 case NONE:
8545 default:
8546 break;
8547 }
8548}
8549
5f310425
KB		 8550static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
8551 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
8552 .status = SAM_STAT_CHECK_CONDITION,
8553};
8554
8555static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 8556{
8557 unsigned int i;
376fb880 8558 struct pqi_io_request *io_request;
376fb880
KB		 8559 struct scsi_cmnd *scmd;
8560
5f310425
KB		 8561 for (i = 0; i < ctrl_info->max_io_slots; i++) {
8562 io_request = &ctrl_info->io_request_pool[i];
8563 if (atomic_read(&io_request->refcount) == 0)
8564 continue;
376fb880 8565
5f310425
KB		 8566 scmd = io_request->scmd;
8567 if (scmd) {
8568 set_host_byte(scmd, DID_NO_CONNECT);
8569 } else {
8570 io_request->status = -ENXIO;
8571 io_request->error_info =
8572 &pqi_ctrl_offline_raid_error_info;
376fb880 8573 }
5f310425
KB		 8574
8575 io_request->io_complete_callback(io_request,
8576 io_request->context);
376fb880
KB		 8577 }
8578}
8579
5f310425 8580static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
376fb880 8581{
5f310425
KB		 8582 pqi_perform_lockup_action();
8583 pqi_stop_heartbeat_timer(ctrl_info);
8584 pqi_free_interrupts(ctrl_info);
8585 pqi_cancel_rescan_worker(ctrl_info);
8586 pqi_cancel_update_time_worker(ctrl_info);
8587 pqi_ctrl_wait_until_quiesced(ctrl_info);
8588 pqi_fail_all_outstanding_requests(ctrl_info);
8589 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
8590 pqi_ctrl_unblock_requests(ctrl_info);
8591}
8592
8593static void pqi_ctrl_offline_worker(struct work_struct *work)
8594{
8595 struct pqi_ctrl_info *ctrl_info;
8596
8597 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
8598 pqi_take_ctrl_offline_deferred(ctrl_info);
376fb880
KB		 8599}
8600
8601static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
8602{
5f310425
KB		 8603 if (!ctrl_info->controller_online)
8604 return;
8605
376fb880 8606 ctrl_info->controller_online = false;
5f310425
KB		 8607 ctrl_info->pqi_mode_enabled = false;
8608 pqi_ctrl_block_requests(ctrl_info);
5a259e32
KB		 8609 if (!pqi_disable_ctrl_shutdown)
8610 sis_shutdown_ctrl(ctrl_info);
376fb880
KB		 8611 pci_disable_device(ctrl_info->pci_dev);
8612 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
5f310425 8613 schedule_work(&ctrl_info->ctrl_offline_work);
376fb880
KB		 8614}
8615
d91d7820 8616static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
6c223761
KB		 8617 const struct pci_device_id *id)
8618{
8619 char *ctrl_description;
8620
37b36847 8621 if (id->driver_data)
6c223761 8622 ctrl_description = (char *)id->driver_data;
37b36847
KB		 8623 else
8624 ctrl_description = "Microsemi Smart Family Controller";
6c223761 8625
d91d7820 8626 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
6c223761
KB		 8627}
8628
d91d7820
KB		 8629static int pqi_pci_probe(struct pci_dev *pci_dev,
8630 const struct pci_device_id *id)
6c223761
KB		 8631{
8632 int rc;
62dc51fb 8633 int node, cp_node;
6c223761
KB		 8634 struct pqi_ctrl_info *ctrl_info;
8635
d91d7820 8636 pqi_print_ctrl_info(pci_dev, id);
6c223761
KB		 8637
8638 if (pqi_disable_device_id_wildcards &&
8639 id->subvendor == PCI_ANY_ID &&
8640 id->subdevice == PCI_ANY_ID) {
d91d7820 8641 dev_warn(&pci_dev->dev,
6c223761
KB		 8642 "controller not probed because device ID wildcards are disabled\n");
8643 return -ENODEV;
8644 }
8645
8646 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
d91d7820 8647 dev_warn(&pci_dev->dev,
6c223761
KB		 8648 "controller device ID matched using wildcards\n");
8649
d91d7820 8650 node = dev_to_node(&pci_dev->dev);
62dc51fb
SB		 8651 if (node == NUMA_NO_NODE) {
8652 cp_node = cpu_to_node(0);
8653 if (cp_node == NUMA_NO_NODE)
8654 cp_node = 0;
8655 set_dev_node(&pci_dev->dev, cp_node);
8656 }
6c223761
KB		 8657
8658 ctrl_info = pqi_alloc_ctrl_info(node);
8659 if (!ctrl_info) {
d91d7820 8660 dev_err(&pci_dev->dev,
6c223761
KB		 8661 "failed to allocate controller info block\n");
8662 return -ENOMEM;
8663 }
8664
d91d7820 8665 ctrl_info->pci_dev = pci_dev;
6c223761
KB		 8666
8667 rc = pqi_pci_init(ctrl_info);
8668 if (rc)
8669 goto error;
8670
8671 rc = pqi_ctrl_init(ctrl_info);
8672 if (rc)
8673 goto error;
8674
8675 return 0;
8676
8677error:
8678 pqi_remove_ctrl(ctrl_info);
8679
8680 return rc;
8681}
8682
d91d7820 8683static void pqi_pci_remove(struct pci_dev *pci_dev)
6c223761
KB		 8684{
8685 struct pqi_ctrl_info *ctrl_info;
8686
d91d7820 8687 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 8688 if (!ctrl_info)
8689 return;
8690
8691 pqi_remove_ctrl(ctrl_info);
8692}
8693
0530736e
KB		 8694static void pqi_crash_if_pending_command(struct pqi_ctrl_info *ctrl_info)
8695{
8696 unsigned int i;
8697 struct pqi_io_request *io_request;
8698 struct scsi_cmnd *scmd;
8699
8700 for (i = 0; i < ctrl_info->max_io_slots; i++) {
8701 io_request = &ctrl_info->io_request_pool[i];
8702 if (atomic_read(&io_request->refcount) == 0)
8703 continue;
8704 scmd = io_request->scmd;
8705 WARN_ON(scmd != NULL); /* IO command from SML */
8706 WARN_ON(scmd == NULL); /* Non-IO cmd or driver initiated*/
8707 }
8708}
8709
d91d7820 8710static void pqi_shutdown(struct pci_dev *pci_dev)
6c223761
KB		 8711{
8712 int rc;
8713 struct pqi_ctrl_info *ctrl_info;
8714
d91d7820 8715 ctrl_info = pci_get_drvdata(pci_dev);
0530736e
KB		 8716 if (!ctrl_info) {
8717 dev_err(&pci_dev->dev,
8718 "cache could not be flushed\n");
8719 return;
8720 }
8721
8722 pqi_disable_events(ctrl_info);
8723 pqi_wait_until_ofa_finished(ctrl_info);
8724 pqi_cancel_update_time_worker(ctrl_info);
8725 pqi_cancel_rescan_worker(ctrl_info);
8726 pqi_cancel_event_worker(ctrl_info);
8727
8728 pqi_ctrl_shutdown_start(ctrl_info);
8729 pqi_ctrl_wait_until_quiesced(ctrl_info);
8730
8731 rc = pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT);
8732 if (rc) {
8733 dev_err(&pci_dev->dev,
8734 "wait for pending I/O failed\n");
8735 return;
8736 }
8737
8738 pqi_ctrl_block_device_reset(ctrl_info);
8739 pqi_wait_until_lun_reset_finished(ctrl_info);
6c223761
KB		 8740
8741 /*
8742 * Write all data in the controller's battery-backed cache to
8743 * storage.
8744 */
58322fe0 8745 rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
0530736e
KB		 8746 if (rc)
8747 dev_err(&pci_dev->dev,
8748 "unable to flush controller cache\n");
8749
8750 pqi_ctrl_block_requests(ctrl_info);
8751
8752 rc = pqi_ctrl_wait_for_pending_sync_cmds(ctrl_info);
8753 if (rc) {
8754 dev_err(&pci_dev->dev,
8755 "wait for pending sync cmds failed\n");
6c223761 8756 return;
0530736e
KB		 8757 }
8758
8759 pqi_crash_if_pending_command(ctrl_info);
8760 pqi_reset(ctrl_info);
6c223761
KB		 8761}
8762
3c50976f
KB		 8763static void pqi_process_lockup_action_param(void)
8764{
8765 unsigned int i;
8766
8767 if (!pqi_lockup_action_param)
8768 return;
8769
8770 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
8771 if (strcmp(pqi_lockup_action_param,
8772 pqi_lockup_actions[i].name) == 0) {
8773 pqi_lockup_action = pqi_lockup_actions[i].action;
8774 return;
8775 }
8776 }
8777
8778 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
8779 DRIVER_NAME_SHORT, pqi_lockup_action_param);
8780}
8781
8782static void pqi_process_module_params(void)
8783{
8784 pqi_process_lockup_action_param();
8785}
8786
5c146686 8787static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
061ef06a
KB		 8788{
8789 struct pqi_ctrl_info *ctrl_info;
8790
8791 ctrl_info = pci_get_drvdata(pci_dev);
8792
8793 pqi_disable_events(ctrl_info);
8794 pqi_cancel_update_time_worker(ctrl_info);
8795 pqi_cancel_rescan_worker(ctrl_info);
8796 pqi_wait_until_scan_finished(ctrl_info);
8797 pqi_wait_until_lun_reset_finished(ctrl_info);
4fd22c13 8798 pqi_wait_until_ofa_finished(ctrl_info);
58322fe0 8799 pqi_flush_cache(ctrl_info, SUSPEND);
061ef06a
KB		 8800 pqi_ctrl_block_requests(ctrl_info);
8801 pqi_ctrl_wait_until_quiesced(ctrl_info);
8802 pqi_wait_until_inbound_queues_empty(ctrl_info);
4fd22c13 8803 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT);
061ef06a
KB		 8804 pqi_stop_heartbeat_timer(ctrl_info);
8805
8806 if (state.event == PM_EVENT_FREEZE)
8807 return 0;
8808
8809 pci_save_state(pci_dev);
8810 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
8811
8812 ctrl_info->controller_online = false;
8813 ctrl_info->pqi_mode_enabled = false;
8814
8815 return 0;
8816}
8817
5c146686 8818static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
061ef06a
KB		 8819{
8820 int rc;
8821 struct pqi_ctrl_info *ctrl_info;
8822
8823 ctrl_info = pci_get_drvdata(pci_dev);
8824
8825 if (pci_dev->current_state != PCI_D0) {
8826 ctrl_info->max_hw_queue_index = 0;
8827 pqi_free_interrupts(ctrl_info);
8828 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
8829 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
8830 IRQF_SHARED, DRIVER_NAME_SHORT,
8831 &ctrl_info->queue_groups[0]);
8832 if (rc) {
8833 dev_err(&ctrl_info->pci_dev->dev,
8834 "irq %u init failed with error %d\n",
8835 pci_dev->irq, rc);
8836 return rc;
8837 }
8838 pqi_start_heartbeat_timer(ctrl_info);
8839 pqi_ctrl_unblock_requests(ctrl_info);
8840 return 0;
8841 }
8842
8843 pci_set_power_state(pci_dev, PCI_D0);
8844 pci_restore_state(pci_dev);
8845
8846 return pqi_ctrl_init_resume(ctrl_info);
8847}
8848
6c223761
KB		 8849/* Define the PCI IDs for the controllers that we support. */
8850static const struct pci_device_id pqi_pci_id_table[] = {
b0f9408b
KB		 8851 {
8852 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8853 0x105b, 0x1211)
8854 },
8855 {
8856 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8857 0x105b, 0x1321)
8858 },
7eddabff
KB		 8859 {
8860 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8861 0x152d, 0x8a22)
8862 },
8863 {
8864 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8865 0x152d, 0x8a23)
8866 },
8867 {
8868 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8869 0x152d, 0x8a24)
8870 },
8871 {
8872 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8873 0x152d, 0x8a36)
8874 },
8875 {
8876 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8877 0x152d, 0x8a37)
8878 },
0595a0b4
AK		 8879 {
8880 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8881 0x193d, 0x1104)
8882 },
8883 {
8884 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8885 0x193d, 0x1105)
8886 },
8887 {
8888 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8889 0x193d, 0x1106)
8890 },
8891 {
8892 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8893 0x193d, 0x1107)
8894 },
b0f9408b
KB		 8895 {
8896 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8897 0x193d, 0x8460)
8898 },
8899 {
8900 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8901 0x193d, 0x8461)
8902 },
84a77fef
MB		 8903 {
8904 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8905 0x193d, 0xc460)
8906 },
8907 {
8908 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8909 0x193d, 0xc461)
8910 },
b0f9408b
KB		 8911 {
8912 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8913 0x193d, 0xf460)
8914 },
8915 {
8916 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8917 0x193d, 0xf461)
8918 },
8919 {
8920 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8921 0x1bd4, 0x0045)
8922 },
8923 {
8924 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8925 0x1bd4, 0x0046)
8926 },
8927 {
8928 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8929 0x1bd4, 0x0047)
8930 },
8931 {
8932 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8933 0x1bd4, 0x0048)
8934 },
9f8d05fa
KB		 8935 {
8936 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8937 0x1bd4, 0x004a)
8938 },
8939 {
8940 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8941 0x1bd4, 0x004b)
8942 },
8943 {
8944 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8945 0x1bd4, 0x004c)
8946 },
63a7956a
GW		 8947 {
8948 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8949 0x1bd4, 0x004f)
8950 },
c1b10475
AK		 8951 {
8952 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8953 0x19e5, 0xd227)
8954 },
8955 {
8956 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8957 0x19e5, 0xd228)
8958 },
8959 {
8960 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8961 0x19e5, 0xd229)
8962 },
8963 {
8964 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8965 0x19e5, 0xd22a)
8966 },
8967 {
8968 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8969 0x19e5, 0xd22b)
8970 },
8971 {
8972 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8973 0x19e5, 0xd22c)
8974 },
6c223761
KB		 8975 {
8976 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8977 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
8978 },
8979 {
8980 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 8981 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
6c223761
KB		 8982 },
8983 {
8984 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8985 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
6c223761
KB		 8986 },
8987 {
8988 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8989 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
6c223761
KB		 8990 },
8991 {
8992 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8993 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
6c223761
KB		 8994 },
8995 {
8996 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8997 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
6c223761
KB		 8998 },
8999 {
9000 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9001 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
6c223761
KB		 9002 },
9003 {
9004 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9005 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
6c223761
KB		 9006 },
9007 {
9008 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9009 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
6c223761 9010 },
55790064
KB		 9011 {
9012 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9013 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
9014 },
63a7956a
GW		 9015 {
9016 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9017 PCI_VENDOR_ID_ADAPTEC2, 0x0808)
9018 },
9019 {
9020 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9021 PCI_VENDOR_ID_ADAPTEC2, 0x0809)
9022 },
3af06083
MR		 9023 {
9024 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9025 PCI_VENDOR_ID_ADAPTEC2, 0x080a)
9026 },
6c223761
KB		 9027 {
9028 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9029 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
6c223761
KB		 9030 },
9031 {
9032 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9033 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
6c223761
KB		 9034 },
9035 {
9036 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9037 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
6c223761
KB		 9038 },
9039 {
9040 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9041 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
6c223761
KB		 9042 },
9043 {
9044 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9045 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
6c223761
KB		 9046 },
9047 {
9048 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9049 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
6c223761
KB		 9050 },
9051 {
9052 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9053 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
6c223761
KB		 9054 },
9055 {
9056 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9057 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
6c223761
KB		 9058 },
9059 {
9060 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9061 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
6c223761 9062 },
55790064
KB		 9063 {
9064 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9065 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
9066 },
6c223761
KB		 9067 {
9068 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9069 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
6c223761
KB		 9070 },
9071 {
9072 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9073 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
6c223761
KB		 9074 },
9075 {
9076 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9077 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
6c223761
KB		 9078 },
9079 {
9080 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9081 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
6c223761
KB		 9082 },
9083 {
9084 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9085 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
6c223761 9086 },
b0f9408b
KB		 9087 {
9088 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9089 PCI_VENDOR_ID_ADAPTEC2, 0x1282)
9090 },
6c223761
KB		 9091 {
9092 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9093 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
6c223761
KB		 9094 },
9095 {
9096 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 9097 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
6c223761 9098 },
bd809e8d
KB		 9099 {
9100 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9101 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
9102 },
9103 {
9104 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9105 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
9106 },
6c223761
KB		 9107 {
9108 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff
KB		 9109 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
9110 },
9f8d05fa
KB		 9111 {
9112 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9113 PCI_VENDOR_ID_ADVANTECH, 0x8312)
9114 },
55790064
KB		 9115 {
9116 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9117 PCI_VENDOR_ID_DELL, 0x1fe0)
9118 },
7eddabff
KB		 9119 {
9120 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9121 PCI_VENDOR_ID_HP, 0x0600)
9122 },
9123 {
9124 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9125 PCI_VENDOR_ID_HP, 0x0601)
9126 },
9127 {
9128 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9129 PCI_VENDOR_ID_HP, 0x0602)
9130 },
9131 {
9132 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9133 PCI_VENDOR_ID_HP, 0x0603)
9134 },
9135 {
9136 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 9137 PCI_VENDOR_ID_HP, 0x0609)
7eddabff
KB		 9138 },
9139 {
9140 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9141 PCI_VENDOR_ID_HP, 0x0650)
9142 },
9143 {
9144 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9145 PCI_VENDOR_ID_HP, 0x0651)
9146 },
9147 {
9148 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9149 PCI_VENDOR_ID_HP, 0x0652)
9150 },
9151 {
9152 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9153 PCI_VENDOR_ID_HP, 0x0653)
9154 },
9155 {
9156 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9157 PCI_VENDOR_ID_HP, 0x0654)
9158 },
9159 {
9160 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9161 PCI_VENDOR_ID_HP, 0x0655)
9162 },
7eddabff
KB		 9163 {
9164 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9165 PCI_VENDOR_ID_HP, 0x0700)
9166 },
9167 {
9168 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9169 PCI_VENDOR_ID_HP, 0x0701)
6c223761
KB		 9170 },
9171 {
9172 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9173 PCI_VENDOR_ID_HP, 0x1001)
9174 },
9175 {
9176 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9177 PCI_VENDOR_ID_HP, 0x1100)
9178 },
9179 {
9180 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9181 PCI_VENDOR_ID_HP, 0x1101)
9182 },
8bdb3b9c
GW		 9183 {
9184 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9185 0x1d8d, 0x0800)
9186 },
9187 {
9188 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9189 0x1d8d, 0x0908)
9190 },
9191 {
9192 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9193 0x1d8d, 0x0806)
9194 },
9195 {
9196 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9197 0x1d8d, 0x0916)
9198 },
71ecc60d
GW		 9199 {
9200 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9201 PCI_VENDOR_ID_GIGABYTE, 0x1000)
9202 },
6c223761
KB		 9203 {
9204 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9205 PCI_ANY_ID, PCI_ANY_ID)
9206 },
9207 { 0 }
9208};
9209
9210MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
9211
9212static struct pci_driver pqi_pci_driver = {
9213 .name = DRIVER_NAME_SHORT,
9214 .id_table = pqi_pci_id_table,
9215 .probe = pqi_pci_probe,
9216 .remove = pqi_pci_remove,
9217 .shutdown = pqi_shutdown,
061ef06a
KB		 9218#if defined(CONFIG_PM)
9219 .suspend = pqi_suspend,
9220 .resume = pqi_resume,
9221#endif
6c223761
KB		 9222};
9223
9224static int __init pqi_init(void)
9225{
9226 int rc;
9227
9228 pr_info(DRIVER_NAME "\n");
9229
8b664fef 9230 pqi_sas_transport_template = sas_attach_transport(&pqi_sas_transport_functions);
6c223761
KB		 9231 if (!pqi_sas_transport_template)
9232 return -ENODEV;
9233
3c50976f
KB		 9234 pqi_process_module_params();
9235
6c223761
KB		 9236 rc = pci_register_driver(&pqi_pci_driver);
9237 if (rc)
9238 sas_release_transport(pqi_sas_transport_template);
9239
9240 return rc;
9241}
9242
9243static void __exit pqi_cleanup(void)
9244{
9245 pci_unregister_driver(&pqi_pci_driver);
9246 sas_release_transport(pqi_sas_transport_template);
9247}
9248
9249module_init(pqi_init);
9250module_exit(pqi_cleanup);
9251
9252static void __attribute__((unused)) verify_structures(void)
9253{
9254 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9255 sis_host_to_ctrl_doorbell) != 0x20);
9256 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9257 sis_interrupt_mask) != 0x34);
9258 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9259 sis_ctrl_to_host_doorbell) != 0x9c);
9260 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9261 sis_ctrl_to_host_doorbell_clear) != 0xa0);
ff6abb73
KB		 9262 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9263 sis_driver_scratch) != 0xb0);
2708a256
KB		 9264 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9265 sis_product_identifier) != 0xb4);
6c223761
KB		 9266 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9267 sis_firmware_status) != 0xbc);
9268 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9269 sis_mailbox) != 0x1000);
9270 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
9271 pqi_registers) != 0x4000);
9272
9273 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
9274 iu_type) != 0x0);
9275 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
9276 iu_length) != 0x2);
9277 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
9278 response_queue_id) != 0x4);
9279 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
9280 work_area) != 0x6);
9281 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
9282
9283 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
9284 status) != 0x0);
9285 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
9286 service_response) != 0x1);
9287 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
9288 data_present) != 0x2);
9289 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
9290 reserved) != 0x3);
9291 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
9292 residual_count) != 0x4);
9293 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
9294 data_length) != 0x8);
9295 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
9296 reserved1) != 0xa);
9297 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
9298 data) != 0xc);
9299 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
9300
9301 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9302 data_in_result) != 0x0);
9303 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9304 data_out_result) != 0x1);
9305 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9306 reserved) != 0x2);
9307 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9308 status) != 0x5);
9309 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9310 status_qualifier) != 0x6);
9311 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9312 sense_data_length) != 0x8);
9313 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9314 response_data_length) != 0xa);
9315 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9316 data_in_transferred) != 0xc);
9317 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9318 data_out_transferred) != 0x10);
9319 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
9320 data) != 0x14);
9321 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
9322
9323 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9324 signature) != 0x0);
9325 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9326 function_and_status_code) != 0x8);
9327 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9328 max_admin_iq_elements) != 0x10);
9329 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9330 max_admin_oq_elements) != 0x11);
9331 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9332 admin_iq_element_length) != 0x12);
9333 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9334 admin_oq_element_length) != 0x13);
9335 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9336 max_reset_timeout) != 0x14);
9337 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9338 legacy_intx_status) != 0x18);
9339 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9340 legacy_intx_mask_set) != 0x1c);
9341 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9342 legacy_intx_mask_clear) != 0x20);
9343 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9344 device_status) != 0x40);
9345 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9346 admin_iq_pi_offset) != 0x48);
9347 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9348 admin_oq_ci_offset) != 0x50);
9349 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9350 admin_iq_element_array_addr) != 0x58);
9351 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9352 admin_oq_element_array_addr) != 0x60);
9353 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9354 admin_iq_ci_addr) != 0x68);
9355 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9356 admin_oq_pi_addr) != 0x70);
9357 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9358 admin_iq_num_elements) != 0x78);
9359 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9360 admin_oq_num_elements) != 0x79);
9361 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9362 admin_queue_int_msg_num) != 0x7a);
9363 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9364 device_error) != 0x80);
9365 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9366 error_details) != 0x88);
9367 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9368 device_reset) != 0x90);
9369 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
9370 power_action) != 0x94);
9371 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
9372
9373 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9374 header.iu_type) != 0);
9375 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9376 header.iu_length) != 2);
9377 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9378 header.work_area) != 6);
9379 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9380 request_id) != 8);
9381 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9382 function_code) != 10);
9383 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9384 data.report_device_capability.buffer_length) != 44);
9385 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9386 data.report_device_capability.sg_descriptor) != 48);
9387 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9388 data.create_operational_iq.queue_id) != 12);
9389 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9390 data.create_operational_iq.element_array_addr) != 16);
9391 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9392 data.create_operational_iq.ci_addr) != 24);
9393 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9394 data.create_operational_iq.num_elements) != 32);
9395 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9396 data.create_operational_iq.element_length) != 34);
9397 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9398 data.create_operational_iq.queue_protocol) != 36);
9399 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9400 data.create_operational_oq.queue_id) != 12);
9401 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9402 data.create_operational_oq.element_array_addr) != 16);
9403 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9404 data.create_operational_oq.pi_addr) != 24);
9405 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9406 data.create_operational_oq.num_elements) != 32);
9407 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9408 data.create_operational_oq.element_length) != 34);
9409 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9410 data.create_operational_oq.queue_protocol) != 36);
9411 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9412 data.create_operational_oq.int_msg_num) != 40);
9413 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9414 data.create_operational_oq.coalescing_count) != 42);
9415 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9416 data.create_operational_oq.min_coalescing_time) != 44);
9417 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9418 data.create_operational_oq.max_coalescing_time) != 48);
9419 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
9420 data.delete_operational_queue.queue_id) != 12);
9421 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
c593642c 9422 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761 9423 data.create_operational_iq) != 64 - 11);
c593642c 9424 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761 9425 data.create_operational_oq) != 64 - 11);
c593642c 9426 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761
KB		 9427 data.delete_operational_queue) != 64 - 11);
9428
9429 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9430 header.iu_type) != 0);
9431 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9432 header.iu_length) != 2);
9433 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9434 header.work_area) != 6);
9435 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9436 request_id) != 8);
9437 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9438 function_code) != 10);
9439 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9440 status) != 11);
9441 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9442 data.create_operational_iq.status_descriptor) != 12);
9443 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9444 data.create_operational_iq.iq_pi_offset) != 16);
9445 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9446 data.create_operational_oq.status_descriptor) != 12);
9447 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
9448 data.create_operational_oq.oq_ci_offset) != 16);
9449 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
9450
9451 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9452 header.iu_type) != 0);
9453 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9454 header.iu_length) != 2);
9455 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9456 header.response_queue_id) != 4);
9457 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9458 header.work_area) != 6);
9459 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9460 request_id) != 8);
9461 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9462 nexus_id) != 10);
9463 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9464 buffer_length) != 12);
9465 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9466 lun_number) != 16);
9467 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9468 protocol_specific) != 24);
9469 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9470 error_index) != 27);
9471 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9472 cdb) != 32);
21432010 9473 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9474 timeout) != 60);
6c223761
KB		 9475 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
9476 sg_descriptors) != 64);
9477 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
9478 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
9479
9480 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9481 header.iu_type) != 0);
9482 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9483 header.iu_length) != 2);
9484 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9485 header.response_queue_id) != 4);
9486 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9487 header.work_area) != 6);
9488 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9489 request_id) != 8);
9490 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9491 nexus_id) != 12);
9492 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9493 buffer_length) != 16);
9494 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9495 data_encryption_key_index) != 22);
9496 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9497 encrypt_tweak_lower) != 24);
9498 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9499 encrypt_tweak_upper) != 28);
9500 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9501 cdb) != 32);
9502 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9503 error_index) != 48);
9504 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9505 num_sg_descriptors) != 50);
9506 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9507 cdb_length) != 51);
9508 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9509 lun_number) != 52);
9510 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
9511 sg_descriptors) != 64);
9512 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
9513 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
9514
9515 BUILD_BUG_ON(offsetof(struct pqi_io_response,
9516 header.iu_type) != 0);
9517 BUILD_BUG_ON(offsetof(struct pqi_io_response,
9518 header.iu_length) != 2);
9519 BUILD_BUG_ON(offsetof(struct pqi_io_response,
9520 request_id) != 8);
9521 BUILD_BUG_ON(offsetof(struct pqi_io_response,
9522 error_index) != 10);
9523
9524 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9525 header.iu_type) != 0);
9526 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9527 header.iu_length) != 2);
9528 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9529 header.response_queue_id) != 4);
9530 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9531 request_id) != 8);
9532 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9533 data.report_event_configuration.buffer_length) != 12);
9534 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9535 data.report_event_configuration.sg_descriptors) != 16);
9536 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9537 data.set_event_configuration.global_event_oq_id) != 10);
9538 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9539 data.set_event_configuration.buffer_length) != 12);
9540 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
9541 data.set_event_configuration.sg_descriptors) != 16);
9542
9543 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
9544 max_inbound_iu_length) != 6);
9545 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
9546 max_outbound_iu_length) != 14);
9547 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
9548
9549 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9550 data_length) != 0);
9551 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9552 iq_arbitration_priority_support_bitmask) != 8);
9553 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9554 maximum_aw_a) != 9);
9555 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9556 maximum_aw_b) != 10);
9557 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9558 maximum_aw_c) != 11);
9559 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9560 max_inbound_queues) != 16);
9561 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9562 max_elements_per_iq) != 18);
9563 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9564 max_iq_element_length) != 24);
9565 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9566 min_iq_element_length) != 26);
9567 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9568 max_outbound_queues) != 30);
9569 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9570 max_elements_per_oq) != 32);
9571 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9572 intr_coalescing_time_granularity) != 34);
9573 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9574 max_oq_element_length) != 36);
9575 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9576 min_oq_element_length) != 38);
9577 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
9578 iu_layer_descriptors) != 64);
9579 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
9580
9581 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
9582 event_type) != 0);
9583 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
9584 oq_id) != 2);
9585 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
9586
9587 BUILD_BUG_ON(offsetof(struct pqi_event_config,
9588 num_event_descriptors) != 2);
9589 BUILD_BUG_ON(offsetof(struct pqi_event_config,
9590 descriptors) != 4);
9591
061ef06a
KB		 9592 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
9593 ARRAY_SIZE(pqi_supported_event_types));
9594
6c223761
KB		 9595 BUILD_BUG_ON(offsetof(struct pqi_event_response,
9596 header.iu_type) != 0);
9597 BUILD_BUG_ON(offsetof(struct pqi_event_response,
9598 header.iu_length) != 2);
9599 BUILD_BUG_ON(offsetof(struct pqi_event_response,
9600 event_type) != 8);
9601 BUILD_BUG_ON(offsetof(struct pqi_event_response,
9602 event_id) != 10);
9603 BUILD_BUG_ON(offsetof(struct pqi_event_response,
9604 additional_event_id) != 12);
9605 BUILD_BUG_ON(offsetof(struct pqi_event_response,
9606 data) != 16);
9607 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
9608
9609 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
9610 header.iu_type) != 0);
9611 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
9612 header.iu_length) != 2);
9613 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
9614 event_type) != 8);
9615 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
9616 event_id) != 10);
9617 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
9618 additional_event_id) != 12);
9619 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
9620
9621 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
9622 header.iu_type) != 0);
9623 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
9624 header.iu_length) != 2);
9625 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
9626 request_id) != 8);
9627 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
9628 nexus_id) != 10);
9629 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
c2922f17
MB		 9630 timeout) != 14);
9631 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
6c223761
KB		 9632 lun_number) != 16);
9633 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
9634 protocol_specific) != 24);
9635 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
9636 outbound_queue_id_to_manage) != 26);
9637 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
9638 request_id_to_manage) != 28);
9639 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
9640 task_management_function) != 30);
9641 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
9642
9643 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
9644 header.iu_type) != 0);
9645 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
9646 header.iu_length) != 2);
9647 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
9648 request_id) != 8);
9649 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
9650 nexus_id) != 10);
9651 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
9652 additional_response_info) != 12);
9653 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
9654 response_code) != 15);
9655 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
9656
9657 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9658 configured_logical_drive_count) != 0);
9659 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9660 configuration_signature) != 1);
9661 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
598bef8d 9662 firmware_version_short) != 5);
6c223761
KB		 9663 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9664 extended_logical_unit_count) != 154);
9665 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9666 firmware_build_number) != 190);
598bef8d
KB		 9667 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9668 vendor_id) != 200);
9669 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9670 product_id) != 208);
9671 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9672 extra_controller_flags) != 286);
6c223761
KB		 9673 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9674 controller_mode) != 292);
598bef8d
KB		 9675 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9676 spare_part_number) != 293);
9677 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9678 firmware_version_long) != 325);
6c223761 9679
1be42f46
KB		 9680 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9681 phys_bay_in_box) != 115);
9682 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9683 device_type) != 120);
9684 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9685 redundant_path_present_map) != 1736);
9686 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9687 active_path_number) != 1738);
9688 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9689 alternate_paths_phys_connector) != 1739);
9690 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9691 alternate_paths_phys_box_on_port) != 1755);
9692 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9693 current_queue_depth_limit) != 1796);
9694 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
9695
f6cc2a77
KB		 9696 BUILD_BUG_ON(sizeof(struct bmic_sense_feature_buffer_header) != 4);
9697 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
9698 page_code) != 0);
9699 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
9700 subpage_code) != 1);
9701 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
9702 buffer_length) != 2);
9703
9704 BUILD_BUG_ON(sizeof(struct bmic_sense_feature_page_header) != 4);
9705 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
9706 page_code) != 0);
9707 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
9708 subpage_code) != 1);
9709 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
9710 page_length) != 2);
9711
9712 BUILD_BUG_ON(sizeof(struct bmic_sense_feature_io_page_aio_subpage)
9713 != 18);
9714 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9715 header) != 0);
9716 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9717 firmware_read_support) != 4);
9718 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9719 driver_read_support) != 5);
9720 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9721 firmware_write_support) != 6);
9722 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9723 driver_write_support) != 7);
9724 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9725 max_transfer_encrypted_sas_sata) != 8);
9726 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9727 max_transfer_encrypted_nvme) != 10);
9728 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9729 max_write_raid_5_6) != 12);
9730 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9731 max_write_raid_1_10_2drive) != 14);
9732 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
9733 max_write_raid_1_10_3drive) != 16);
9734
6c223761
KB		 9735 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
9736 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
9737 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
9738 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
9739 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
9740 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
9741 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
9742 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
9743 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
9744 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
9745 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
9746 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
9747
9748 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
d727a776
KB		 9749 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
9750 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
6c223761 9751}
Linux 6.x block layer and io_uring tree(s)