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module: remove never implemented MODULE_SUPPORTED_DEVICE
[mirror_ubuntu-jammy-kernel.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);
6c223761
KB		 51MODULE_VERSION(DRIVER_VERSION);
52MODULE_LICENSE("GPL");
53
6c223761 54static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info);
5f310425 55static void pqi_ctrl_offline_worker(struct work_struct *work);
376fb880 56static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info);
6c223761
KB		 57static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
58static void pqi_scan_start(struct Scsi_Host *shost);
59static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
60 struct pqi_queue_group *queue_group, enum pqi_io_path path,
61 struct pqi_io_request *io_request);
62static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
63 struct pqi_iu_header *request, unsigned int flags,
64 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs);
65static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
66 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
67 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 68 struct pqi_encryption_info *encryption_info, bool raid_bypass);
4fd22c13
MR		 69static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info);
70static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info);
71static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info);
72static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
73 u32 bytes_requested);
74static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info);
75static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info);
1e46731e
MR		 76static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
77 struct pqi_scsi_dev *device, unsigned long timeout_secs);
6c223761
KB		 78
79/* for flags argument to pqi_submit_raid_request_synchronous() */
80#define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
81
82static struct scsi_transport_template *pqi_sas_transport_template;
83
84static atomic_t pqi_controller_count = ATOMIC_INIT(0);
85
3c50976f
KB		 86enum pqi_lockup_action {
87 NONE,
88 REBOOT,
89 PANIC
90};
91
92static enum pqi_lockup_action pqi_lockup_action = NONE;
93
94static struct {
95 enum pqi_lockup_action action;
96 char *name;
97} pqi_lockup_actions[] = {
98 {
99 .action = NONE,
100 .name = "none",
101 },
102 {
103 .action = REBOOT,
104 .name = "reboot",
105 },
106 {
107 .action = PANIC,
108 .name = "panic",
109 },
110};
111
6a50d6ad
KB		 112static unsigned int pqi_supported_event_types[] = {
113 PQI_EVENT_TYPE_HOTPLUG,
114 PQI_EVENT_TYPE_HARDWARE,
115 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
116 PQI_EVENT_TYPE_LOGICAL_DEVICE,
4fd22c13 117 PQI_EVENT_TYPE_OFA,
6a50d6ad
KB		 118 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
119 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
120};
121
6c223761
KB		 122static int pqi_disable_device_id_wildcards;
123module_param_named(disable_device_id_wildcards,
cbe0c7b1 124 pqi_disable_device_id_wildcards, int, 0644);
6c223761
KB		 125MODULE_PARM_DESC(disable_device_id_wildcards,
126 "Disable device ID wildcards.");
127
5a259e32
KB		 128static int pqi_disable_heartbeat;
129module_param_named(disable_heartbeat,
130 pqi_disable_heartbeat, int, 0644);
131MODULE_PARM_DESC(disable_heartbeat,
132 "Disable heartbeat.");
133
134static int pqi_disable_ctrl_shutdown;
135module_param_named(disable_ctrl_shutdown,
136 pqi_disable_ctrl_shutdown, int, 0644);
137MODULE_PARM_DESC(disable_ctrl_shutdown,
138 "Disable controller shutdown when controller locked up.");
139
3c50976f
KB		 140static char *pqi_lockup_action_param;
141module_param_named(lockup_action,
142 pqi_lockup_action_param, charp, 0644);
143MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
144 "\t\tSupported: none, reboot, panic\n"
145 "\t\tDefault: none");
146
5e6a9760
GW		 147static int pqi_expose_ld_first;
148module_param_named(expose_ld_first,
149 pqi_expose_ld_first, int, 0644);
150MODULE_PARM_DESC(expose_ld_first,
151 "Expose logical drives before physical drives.");
152
522bc026
DC		 153static int pqi_hide_vsep;
154module_param_named(hide_vsep,
155 pqi_hide_vsep, int, 0644);
156MODULE_PARM_DESC(hide_vsep,
157 "Hide the virtual SEP for direct attached drives.");
158
6c223761
KB		 159static char *raid_levels[] = {
160 "RAID-0",
161 "RAID-4",
162 "RAID-1(1+0)",
163 "RAID-5",
164 "RAID-5+1",
165 "RAID-ADG",
166 "RAID-1(ADM)",
167};
168
169static char *pqi_raid_level_to_string(u8 raid_level)
170{
171 if (raid_level < ARRAY_SIZE(raid_levels))
172 return raid_levels[raid_level];
173
a9f93392 174 return "RAID UNKNOWN";
6c223761
KB		 175}
176
177#define SA_RAID_0 0
178#define SA_RAID_4 1
179#define SA_RAID_1 2 /* also used for RAID 10 */
180#define SA_RAID_5 3 /* also used for RAID 50 */
181#define SA_RAID_51 4
182#define SA_RAID_6 5 /* also used for RAID 60 */
183#define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
184#define SA_RAID_MAX SA_RAID_ADM
185#define SA_RAID_UNKNOWN 0xff
186
187static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
188{
7561a7e4 189 pqi_prep_for_scsi_done(scmd);
6c223761
KB		 190 scmd->scsi_done(scmd);
191}
192
b6e2ef67 193static inline void pqi_disable_write_same(struct scsi_device *sdev)
6c223761 194{
b6e2ef67 195 sdev->no_write_same = 1;
6c223761
KB		 196}
197
6c223761 198static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
6c223761 199{
6c223761 200 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
6c223761
KB		 201}
202
203static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
204{
205 return !device->is_physical_device;
206}
207
bd10cf0b
KB		 208static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
209{
210 return scsi3addr[2] != 0;
211}
212
694c5d5b
KB		 213static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
214{
215 return !ctrl_info->controller_online;
216}
217
6c223761
KB		 218static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
219{
220 if (ctrl_info->controller_online)
221 if (!sis_is_firmware_running(ctrl_info))
222 pqi_take_ctrl_offline(ctrl_info);
223}
224
225static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
226{
227 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
228}
229
ff6abb73
KB		 230static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
231 struct pqi_ctrl_info *ctrl_info)
232{
233 return sis_read_driver_scratch(ctrl_info);
234}
235
236static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
237 enum pqi_ctrl_mode mode)
238{
239 sis_write_driver_scratch(ctrl_info, mode);
240}
241
694c5d5b
KB		 242static inline void pqi_ctrl_block_device_reset(struct pqi_ctrl_info *ctrl_info)
243{
244 ctrl_info->block_device_reset = true;
245}
246
247static inline bool pqi_device_reset_blocked(struct pqi_ctrl_info *ctrl_info)
248{
249 return ctrl_info->block_device_reset;
250}
251
252static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
253{
254 return ctrl_info->block_requests;
255}
256
7561a7e4
KB		 257static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
258{
259 ctrl_info->block_requests = true;
260 scsi_block_requests(ctrl_info->scsi_host);
261}
262
263static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
264{
265 ctrl_info->block_requests = false;
266 wake_up_all(&ctrl_info->block_requests_wait);
376fb880 267 pqi_retry_raid_bypass_requests(ctrl_info);
7561a7e4
KB		 268 scsi_unblock_requests(ctrl_info->scsi_host);
269}
270
7561a7e4
KB		 271static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
272 unsigned long timeout_msecs)
273{
274 unsigned long remaining_msecs;
275
276 if (!pqi_ctrl_blocked(ctrl_info))
277 return timeout_msecs;
278
279 atomic_inc(&ctrl_info->num_blocked_threads);
280
281 if (timeout_msecs == NO_TIMEOUT) {
282 wait_event(ctrl_info->block_requests_wait,
283 !pqi_ctrl_blocked(ctrl_info));
284 remaining_msecs = timeout_msecs;
285 } else {
286 unsigned long remaining_jiffies;
287
288 remaining_jiffies =
289 wait_event_timeout(ctrl_info->block_requests_wait,
290 !pqi_ctrl_blocked(ctrl_info),
291 msecs_to_jiffies(timeout_msecs));
292 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
293 }
294
295 atomic_dec(&ctrl_info->num_blocked_threads);
296
297 return remaining_msecs;
298}
299
7561a7e4
KB		 300static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
301{
302 while (atomic_read(&ctrl_info->num_busy_threads) >
303 atomic_read(&ctrl_info->num_blocked_threads))
304 usleep_range(1000, 2000);
305}
306
03b288cf
KB		 307static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
308{
309 return device->device_offline;
310}
311
7561a7e4
KB		 312static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
313{
314 device->in_reset = true;
315}
316
317static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
318{
319 device->in_reset = false;
320}
321
322static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
323{
324 return device->in_reset;
325}
6c223761 326
4fd22c13
MR		 327static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info)
328{
329 ctrl_info->in_ofa = true;
330}
331
332static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info)
333{
334 ctrl_info->in_ofa = false;
335}
336
337static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info)
338{
339 return ctrl_info->in_ofa;
340}
341
1e46731e
MR		 342static inline void pqi_device_remove_start(struct pqi_scsi_dev *device)
343{
344 device->in_remove = true;
345}
346
1bdf6e93 347static inline bool pqi_device_in_remove(struct pqi_scsi_dev *device)
1e46731e 348{
1bdf6e93 349 return device->in_remove;
1e46731e
MR		 350}
351
0530736e
KB		 352static inline void pqi_ctrl_shutdown_start(struct pqi_ctrl_info *ctrl_info)
353{
354 ctrl_info->in_shutdown = true;
355}
356
357static inline bool pqi_ctrl_in_shutdown(struct pqi_ctrl_info *ctrl_info)
358{
359 return ctrl_info->in_shutdown;
360}
361
5f310425
KB		 362static inline void pqi_schedule_rescan_worker_with_delay(
363 struct pqi_ctrl_info *ctrl_info, unsigned long delay)
364{
365 if (pqi_ctrl_offline(ctrl_info))
366 return;
4fd22c13
MR		 367 if (pqi_ctrl_in_ofa(ctrl_info))
368 return;
5f310425
KB		 369
370 schedule_delayed_work(&ctrl_info->rescan_work, delay);
371}
372
6c223761
KB		 373static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
374{
5f310425
KB		 375 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
376}
377
4fd22c13 378#define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ)
5f310425
KB		 379
380static inline void pqi_schedule_rescan_worker_delayed(
381 struct pqi_ctrl_info *ctrl_info)
382{
383 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
6c223761
KB		 384}
385
061ef06a
KB		 386static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
387{
388 cancel_delayed_work_sync(&ctrl_info->rescan_work);
389}
390
0530736e
KB		 391static inline void pqi_cancel_event_worker(struct pqi_ctrl_info *ctrl_info)
392{
393 cancel_work_sync(&ctrl_info->event_work);
394}
395
98f87667
KB		 396static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
397{
398 if (!ctrl_info->heartbeat_counter)
399 return 0;
400
401 return readl(ctrl_info->heartbeat_counter);
402}
403
4fd22c13
MR		 404static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
405{
406 if (!ctrl_info->soft_reset_status)
407 return 0;
408
409 return readb(ctrl_info->soft_reset_status);
410}
411
412static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info,
694c5d5b 413 u8 clear)
4fd22c13
MR		 414{
415 u8 status;
416
417 if (!ctrl_info->soft_reset_status)
418 return;
419
420 status = pqi_read_soft_reset_status(ctrl_info);
421 status &= ~clear;
422 writeb(status, ctrl_info->soft_reset_status);
423}
424
6c223761
KB		 425static int pqi_map_single(struct pci_dev *pci_dev,
426 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
6917a9cc 427 size_t buffer_length, enum dma_data_direction data_direction)
6c223761
KB		 428{
429 dma_addr_t bus_address;
430
6917a9cc 431 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE)
6c223761
KB		 432 return 0;
433
6917a9cc 434 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length,
6c223761 435 data_direction);
6917a9cc 436 if (dma_mapping_error(&pci_dev->dev, bus_address))
6c223761
KB		 437 return -ENOMEM;
438
439 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
440 put_unaligned_le32(buffer_length, &sg_descriptor->length);
441 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
442
443 return 0;
444}
445
446static void pqi_pci_unmap(struct pci_dev *pci_dev,
447 struct pqi_sg_descriptor *descriptors, int num_descriptors,
6917a9cc 448 enum dma_data_direction data_direction)
6c223761
KB		 449{
450 int i;
451
6917a9cc 452 if (data_direction == DMA_NONE)
6c223761
KB		 453 return;
454
455 for (i = 0; i < num_descriptors; i++)
6917a9cc 456 dma_unmap_single(&pci_dev->dev,
6c223761
KB		 457 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
458 get_unaligned_le32(&descriptors[i].length),
459 data_direction);
460}
461
462static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
463 struct pqi_raid_path_request *request, u8 cmd,
464 u8 *scsi3addr, void *buffer, size_t buffer_length,
6917a9cc 465 u16 vpd_page, enum dma_data_direction *dir)
6c223761
KB		 466{
467 u8 *cdb;
171c2865 468 size_t cdb_length = buffer_length;
6c223761
KB		 469
470 memset(request, 0, sizeof(*request));
471
472 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
473 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
474 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
475 &request->header.iu_length);
476 put_unaligned_le32(buffer_length, &request->buffer_length);
477 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
478 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
479 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
480
481 cdb = request->cdb;
482
483 switch (cmd) {
484 case INQUIRY:
485 request->data_direction = SOP_READ_FLAG;
486 cdb[0] = INQUIRY;
487 if (vpd_page & VPD_PAGE) {
488 cdb[1] = 0x1;
489 cdb[2] = (u8)vpd_page;
490 }
171c2865 491 cdb[4] = (u8)cdb_length;
6c223761
KB		 492 break;
493 case CISS_REPORT_LOG:
494 case CISS_REPORT_PHYS:
495 request->data_direction = SOP_READ_FLAG;
496 cdb[0] = cmd;
497 if (cmd == CISS_REPORT_PHYS)
694c5d5b 498 cdb[1] = CISS_REPORT_PHYS_FLAG_OTHER;
6c223761 499 else
694c5d5b 500 cdb[1] = CISS_REPORT_LOG_FLAG_UNIQUE_LUN_ID;
171c2865 501 put_unaligned_be32(cdb_length, &cdb[6]);
6c223761
KB		 502 break;
503 case CISS_GET_RAID_MAP:
504 request->data_direction = SOP_READ_FLAG;
505 cdb[0] = CISS_READ;
506 cdb[1] = CISS_GET_RAID_MAP;
171c2865 507 put_unaligned_be32(cdb_length, &cdb[6]);
6c223761 508 break;
58322fe0 509 case SA_FLUSH_CACHE:
6c223761
KB		 510 request->data_direction = SOP_WRITE_FLAG;
511 cdb[0] = BMIC_WRITE;
58322fe0 512 cdb[6] = BMIC_FLUSH_CACHE;
171c2865 513 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 514 break;
171c2865
DC		 515 case BMIC_SENSE_DIAG_OPTIONS:
516 cdb_length = 0;
df561f66 517 fallthrough;
6c223761
KB		 518 case BMIC_IDENTIFY_CONTROLLER:
519 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6d90615f 520 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
6c223761
KB		 521 request->data_direction = SOP_READ_FLAG;
522 cdb[0] = BMIC_READ;
523 cdb[6] = cmd;
171c2865 524 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 525 break;
171c2865
DC		 526 case BMIC_SET_DIAG_OPTIONS:
527 cdb_length = 0;
df561f66 528 fallthrough;
6c223761
KB		 529 case BMIC_WRITE_HOST_WELLNESS:
530 request->data_direction = SOP_WRITE_FLAG;
531 cdb[0] = BMIC_WRITE;
532 cdb[6] = cmd;
171c2865 533 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761 534 break;
3d46a59a
DB		 535 case BMIC_CSMI_PASSTHRU:
536 request->data_direction = SOP_BIDIRECTIONAL;
537 cdb[0] = BMIC_WRITE;
538 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU;
539 cdb[6] = cmd;
540 put_unaligned_be16(cdb_length, &cdb[7]);
6c223761
KB		 541 break;
542 default:
9e68cccc 543 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n", cmd);
6c223761
KB		 544 break;
545 }
546
547 switch (request->data_direction) {
548 case SOP_READ_FLAG:
6917a9cc 549 *dir = DMA_FROM_DEVICE;
6c223761
KB		 550 break;
551 case SOP_WRITE_FLAG:
6917a9cc 552 *dir = DMA_TO_DEVICE;
6c223761
KB		 553 break;
554 case SOP_NO_DIRECTION_FLAG:
6917a9cc 555 *dir = DMA_NONE;
6c223761
KB		 556 break;
557 default:
6917a9cc 558 *dir = DMA_BIDIRECTIONAL;
6c223761
KB		 559 break;
560 }
561
6c223761 562 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
6917a9cc 563 buffer, buffer_length, *dir);
6c223761
KB		 564}
565
376fb880
KB		 566static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
567{
568 io_request->scmd = NULL;
569 io_request->status = 0;
570 io_request->error_info = NULL;
571 io_request->raid_bypass = false;
572}
573
6c223761
KB		 574static struct pqi_io_request *pqi_alloc_io_request(
575 struct pqi_ctrl_info *ctrl_info)
576{
577 struct pqi_io_request *io_request;
578 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
579
580 while (1) {
581 io_request = &ctrl_info->io_request_pool[i];
582 if (atomic_inc_return(&io_request->refcount) == 1)
583 break;
584 atomic_dec(&io_request->refcount);
585 i = (i + 1) % ctrl_info->max_io_slots;
586 }
587
588 /* benignly racy */
589 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
590
376fb880 591 pqi_reinit_io_request(io_request);
6c223761
KB		 592
593 return io_request;
594}
595
596static void pqi_free_io_request(struct pqi_io_request *io_request)
597{
598 atomic_dec(&io_request->refcount);
599}
600
02133b68 601static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
694c5d5b
KB		 602 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
603 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
6c223761
KB		 604{
605 int rc;
6c223761 606 struct pqi_raid_path_request request;
694c5d5b 607 enum dma_data_direction dir;
6c223761
KB		 608
609 rc = pqi_build_raid_path_request(ctrl_info, &request,
02133b68
DC		 610 cmd, scsi3addr, buffer,
611 buffer_length, vpd_page, &dir);
6c223761
KB		 612 if (rc)
613 return rc;
614
694c5d5b
KB		 615 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
616 error_info, timeout_msecs);
6c223761 617
6917a9cc 618 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
694c5d5b 619
6c223761
KB		 620 return rc;
621}
622
694c5d5b 623/* helper functions for pqi_send_scsi_raid_request */
02133b68
DC		 624
625static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
694c5d5b 626 u8 cmd, void *buffer, size_t buffer_length)
6c223761 627{
02133b68 628 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
694c5d5b 629 buffer, buffer_length, 0, NULL, NO_TIMEOUT);
02133b68 630}
6c223761 631
02133b68 632static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
694c5d5b
KB		 633 u8 cmd, void *buffer, size_t buffer_length,
634 struct pqi_raid_error_info *error_info)
02133b68
DC		 635{
636 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
694c5d5b 637 buffer, buffer_length, 0, error_info, NO_TIMEOUT);
02133b68 638}
6c223761 639
02133b68 640static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
694c5d5b 641 struct bmic_identify_controller *buffer)
02133b68
DC		 642{
643 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
694c5d5b 644 buffer, sizeof(*buffer));
02133b68
DC		 645}
646
6d90615f 647static inline int pqi_sense_subsystem_info(struct pqi_ctrl_info *ctrl_info,
694c5d5b 648 struct bmic_sense_subsystem_info *sense_info)
6d90615f
MB		 649{
650 return pqi_send_ctrl_raid_request(ctrl_info,
694c5d5b
KB		 651 BMIC_SENSE_SUBSYSTEM_INFORMATION, sense_info,
652 sizeof(*sense_info));
6d90615f
MB		 653}
654
02133b68 655static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
6c223761 656 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
02133b68
DC		 657{
658 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
659 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT);
6c223761
KB		 660}
661
662static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
663 struct pqi_scsi_dev *device,
694c5d5b 664 struct bmic_identify_physical_device *buffer, size_t buffer_length)
6c223761
KB		 665{
666 int rc;
6917a9cc 667 enum dma_data_direction dir;
6c223761
KB		 668 u16 bmic_device_index;
669 struct pqi_raid_path_request request;
670
671 rc = pqi_build_raid_path_request(ctrl_info, &request,
672 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
6917a9cc 673 buffer_length, 0, &dir);
6c223761
KB		 674 if (rc)
675 return rc;
676
677 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
678 request.cdb[2] = (u8)bmic_device_index;
679 request.cdb[9] = (u8)(bmic_device_index >> 8);
680
681 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
682 0, NULL, NO_TIMEOUT);
683
6917a9cc 684 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
694c5d5b 685
6c223761
KB		 686 return rc;
687}
688
58322fe0
KB		 689static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
690 enum bmic_flush_cache_shutdown_event shutdown_event)
6c223761
KB		 691{
692 int rc;
58322fe0 693 struct bmic_flush_cache *flush_cache;
6c223761
KB		 694
695 /*
696 * Don't bother trying to flush the cache if the controller is
697 * locked up.
698 */
699 if (pqi_ctrl_offline(ctrl_info))
700 return -ENXIO;
701
58322fe0
KB		 702 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
703 if (!flush_cache)
6c223761
KB		 704 return -ENOMEM;
705
58322fe0
KB		 706 flush_cache->shutdown_event = shutdown_event;
707
02133b68
DC		 708 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
709 sizeof(*flush_cache));
6c223761 710
58322fe0 711 kfree(flush_cache);
6c223761
KB		 712
713 return rc;
714}
715
3d46a59a
DB		 716int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info,
717 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length,
718 struct pqi_raid_error_info *error_info)
719{
720 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU,
721 buffer, buffer_length, error_info);
722}
171c2865 723
694c5d5b 724#define PQI_FETCH_PTRAID_DATA (1 << 31)
171c2865
DC		 725
726static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
6c223761
KB		 727{
728 int rc;
171c2865 729 struct bmic_diag_options *diag;
6c223761 730
171c2865
DC		 731 diag = kzalloc(sizeof(*diag), GFP_KERNEL);
732 if (!diag)
733 return -ENOMEM;
734
02133b68 735 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
694c5d5b 736 diag, sizeof(*diag));
6c223761 737 if (rc)
171c2865 738 goto out;
6c223761 739
171c2865
DC		 740 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
741
694c5d5b
KB		 742 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS, diag,
743 sizeof(*diag));
744
171c2865
DC		 745out:
746 kfree(diag);
6c223761 747
6c223761
KB		 748 return rc;
749}
750
02133b68 751static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 752 void *buffer, size_t buffer_length)
753{
02133b68 754 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
694c5d5b 755 buffer, buffer_length);
6c223761
KB		 756}
757
758#pragma pack(1)
759
760struct bmic_host_wellness_driver_version {
761 u8 start_tag[4];
762 u8 driver_version_tag[2];
763 __le16 driver_version_length;
764 char driver_version[32];
b2346b50 765 u8 dont_write_tag[2];
6c223761
KB		 766 u8 end_tag[2];
767};
768
769#pragma pack()
770
771static int pqi_write_driver_version_to_host_wellness(
772 struct pqi_ctrl_info *ctrl_info)
773{
774 int rc;
775 struct bmic_host_wellness_driver_version *buffer;
776 size_t buffer_length;
777
778 buffer_length = sizeof(*buffer);
779
780 buffer = kmalloc(buffer_length, GFP_KERNEL);
781 if (!buffer)
782 return -ENOMEM;
783
784 buffer->start_tag[0] = '<';
785 buffer->start_tag[1] = 'H';
786 buffer->start_tag[2] = 'W';
787 buffer->start_tag[3] = '>';
788 buffer->driver_version_tag[0] = 'D';
789 buffer->driver_version_tag[1] = 'V';
790 put_unaligned_le16(sizeof(buffer->driver_version),
791 &buffer->driver_version_length);
061ef06a 792 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
6c223761
KB		 793 sizeof(buffer->driver_version) - 1);
794 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
b2346b50
MR		 795 buffer->dont_write_tag[0] = 'D';
796 buffer->dont_write_tag[1] = 'W';
6c223761
KB		 797 buffer->end_tag[0] = 'Z';
798 buffer->end_tag[1] = 'Z';
799
800 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
801
802 kfree(buffer);
803
804 return rc;
805}
806
807#pragma pack(1)
808
809struct bmic_host_wellness_time {
810 u8 start_tag[4];
811 u8 time_tag[2];
812 __le16 time_length;
813 u8 time[8];
814 u8 dont_write_tag[2];
815 u8 end_tag[2];
816};
817
818#pragma pack()
819
820static int pqi_write_current_time_to_host_wellness(
821 struct pqi_ctrl_info *ctrl_info)
822{
823 int rc;
824 struct bmic_host_wellness_time *buffer;
825 size_t buffer_length;
826 time64_t local_time;
827 unsigned int year;
ed10858e 828 struct tm tm;
6c223761
KB		 829
830 buffer_length = sizeof(*buffer);
831
832 buffer = kmalloc(buffer_length, GFP_KERNEL);
833 if (!buffer)
834 return -ENOMEM;
835
836 buffer->start_tag[0] = '<';
837 buffer->start_tag[1] = 'H';
838 buffer->start_tag[2] = 'W';
839 buffer->start_tag[3] = '>';
840 buffer->time_tag[0] = 'T';
841 buffer->time_tag[1] = 'D';
842 put_unaligned_le16(sizeof(buffer->time),
843 &buffer->time_length);
844
ed10858e
AB		 845 local_time = ktime_get_real_seconds();
846 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
6c223761
KB		 847 year = tm.tm_year + 1900;
848
849 buffer->time[0] = bin2bcd(tm.tm_hour);
850 buffer->time[1] = bin2bcd(tm.tm_min);
851 buffer->time[2] = bin2bcd(tm.tm_sec);
852 buffer->time[3] = 0;
853 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
854 buffer->time[5] = bin2bcd(tm.tm_mday);
855 buffer->time[6] = bin2bcd(year / 100);
856 buffer->time[7] = bin2bcd(year % 100);
857
858 buffer->dont_write_tag[0] = 'D';
859 buffer->dont_write_tag[1] = 'W';
860 buffer->end_tag[0] = 'Z';
861 buffer->end_tag[1] = 'Z';
862
863 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
864
865 kfree(buffer);
866
867 return rc;
868}
869
4fd22c13 870#define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ)
6c223761
KB		 871
872static void pqi_update_time_worker(struct work_struct *work)
873{
874 int rc;
875 struct pqi_ctrl_info *ctrl_info;
876
877 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
878 update_time_work);
879
5f310425
KB		 880 if (pqi_ctrl_offline(ctrl_info))
881 return;
882
6c223761
KB		 883 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
884 if (rc)
885 dev_warn(&ctrl_info->pci_dev->dev,
886 "error updating time on controller\n");
887
888 schedule_delayed_work(&ctrl_info->update_time_work,
889 PQI_UPDATE_TIME_WORK_INTERVAL);
890}
891
892static inline void pqi_schedule_update_time_worker(
4fbebf1a 893 struct pqi_ctrl_info *ctrl_info)
6c223761 894{
4fbebf1a 895 schedule_delayed_work(&ctrl_info->update_time_work, 0);
061ef06a
KB		 896}
897
898static inline void pqi_cancel_update_time_worker(
899 struct pqi_ctrl_info *ctrl_info)
900{
061ef06a 901 cancel_delayed_work_sync(&ctrl_info->update_time_work);
6c223761
KB		 902}
903
02133b68 904static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
6c223761
KB		 905 void *buffer, size_t buffer_length)
906{
02133b68 907 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer,
694c5d5b 908 buffer_length);
6c223761
KB		 909}
910
911static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
912 void **buffer)
913{
914 int rc;
915 size_t lun_list_length;
916 size_t lun_data_length;
917 size_t new_lun_list_length;
918 void *lun_data = NULL;
919 struct report_lun_header *report_lun_header;
920
921 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
922 if (!report_lun_header) {
923 rc = -ENOMEM;
924 goto out;
925 }
926
927 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header,
928 sizeof(*report_lun_header));
929 if (rc)
930 goto out;
931
932 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
933
934again:
935 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
936
937 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
938 if (!lun_data) {
939 rc = -ENOMEM;
940 goto out;
941 }
942
943 if (lun_list_length == 0) {
944 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
945 goto out;
946 }
947
948 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
949 if (rc)
950 goto out;
951
952 new_lun_list_length = get_unaligned_be32(
953 &((struct report_lun_header *)lun_data)->list_length);
954
955 if (new_lun_list_length > lun_list_length) {
956 lun_list_length = new_lun_list_length;
957 kfree(lun_data);
958 goto again;
959 }
960
961out:
962 kfree(report_lun_header);
963
964 if (rc) {
965 kfree(lun_data);
966 lun_data = NULL;
967 }
968
969 *buffer = lun_data;
970
971 return rc;
972}
973
974static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info,
975 void **buffer)
976{
977 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS,
978 buffer);
979}
980
981static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info,
982 void **buffer)
983{
984 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
985}
986
987static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
988 struct report_phys_lun_extended **physdev_list,
989 struct report_log_lun_extended **logdev_list)
990{
991 int rc;
992 size_t logdev_list_length;
993 size_t logdev_data_length;
994 struct report_log_lun_extended *internal_logdev_list;
995 struct report_log_lun_extended *logdev_data;
996 struct report_lun_header report_lun_header;
997
998 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
999 if (rc)
1000 dev_err(&ctrl_info->pci_dev->dev,
1001 "report physical LUNs failed\n");
1002
1003 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
1004 if (rc)
1005 dev_err(&ctrl_info->pci_dev->dev,
1006 "report logical LUNs failed\n");
1007
1008 /*
1009 * Tack the controller itself onto the end of the logical device list.
1010 */
1011
1012 logdev_data = *logdev_list;
1013
1014 if (logdev_data) {
1015 logdev_list_length =
1016 get_unaligned_be32(&logdev_data->header.list_length);
1017 } else {
1018 memset(&report_lun_header, 0, sizeof(report_lun_header));
1019 logdev_data =
1020 (struct report_log_lun_extended *)&report_lun_header;
1021 logdev_list_length = 0;
1022 }
1023
1024 logdev_data_length = sizeof(struct report_lun_header) +
1025 logdev_list_length;
1026
1027 internal_logdev_list = kmalloc(logdev_data_length +
1028 sizeof(struct report_log_lun_extended), GFP_KERNEL);
1029 if (!internal_logdev_list) {
1030 kfree(*logdev_list);
1031 *logdev_list = NULL;
1032 return -ENOMEM;
1033 }
1034
1035 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
1036 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
1037 sizeof(struct report_log_lun_extended_entry));
1038 put_unaligned_be32(logdev_list_length +
1039 sizeof(struct report_log_lun_extended_entry),
1040 &internal_logdev_list->header.list_length);
1041
1042 kfree(*logdev_list);
1043 *logdev_list = internal_logdev_list;
1044
1045 return 0;
1046}
1047
1048static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
1049 int bus, int target, int lun)
1050{
1051 device->bus = bus;
1052 device->target = target;
1053 device->lun = lun;
1054}
1055
1056static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
1057{
1058 u8 *scsi3addr;
1059 u32 lunid;
bd10cf0b
KB		 1060 int bus;
1061 int target;
1062 int lun;
6c223761
KB		 1063
1064 scsi3addr = device->scsi3addr;
1065 lunid = get_unaligned_le32(scsi3addr);
1066
1067 if (pqi_is_hba_lunid(scsi3addr)) {
1068 /* The specified device is the controller. */
1069 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
1070 device->target_lun_valid = true;
1071 return;
1072 }
1073
1074 if (pqi_is_logical_device(device)) {
bd10cf0b
KB		 1075 if (device->is_external_raid_device) {
1076 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
1077 target = (lunid >> 16) & 0x3fff;
1078 lun = lunid & 0xff;
1079 } else {
1080 bus = PQI_RAID_VOLUME_BUS;
1081 target = 0;
1082 lun = lunid & 0x3fff;
1083 }
1084 pqi_set_bus_target_lun(device, bus, target, lun);
6c223761
KB		 1085 device->target_lun_valid = true;
1086 return;
1087 }
1088
1089 /*
1090 * Defer target and LUN assignment for non-controller physical devices
1091 * because the SAS transport layer will make these assignments later.
1092 */
1093 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
1094}
1095
1096static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
1097 struct pqi_scsi_dev *device)
1098{
1099 int rc;
1100 u8 raid_level;
1101 u8 *buffer;
1102
1103 raid_level = SA_RAID_UNKNOWN;
1104
1105 buffer = kmalloc(64, GFP_KERNEL);
1106 if (buffer) {
1107 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1108 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1109 if (rc == 0) {
1110 raid_level = buffer[8];
1111 if (raid_level > SA_RAID_MAX)
1112 raid_level = SA_RAID_UNKNOWN;
1113 }
1114 kfree(buffer);
1115 }
1116
1117 device->raid_level = raid_level;
1118}
1119
1120static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1121 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1122{
1123 char *err_msg;
1124 u32 raid_map_size;
1125 u32 r5or6_blocks_per_row;
6c223761
KB		 1126
1127 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1128
1129 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1130 err_msg = "RAID map too small";
1131 goto bad_raid_map;
1132 }
1133
6c223761
KB		 1134 if (device->raid_level == SA_RAID_1) {
1135 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1136 err_msg = "invalid RAID-1 map";
1137 goto bad_raid_map;
1138 }
1139 } else if (device->raid_level == SA_RAID_ADM) {
1140 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1141 err_msg = "invalid RAID-1(ADM) map";
1142 goto bad_raid_map;
1143 }
1144 } else if ((device->raid_level == SA_RAID_5 ||
1145 device->raid_level == SA_RAID_6) &&
1146 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1147 /* RAID 50/60 */
1148 r5or6_blocks_per_row =
1149 get_unaligned_le16(&raid_map->strip_size) *
1150 get_unaligned_le16(&raid_map->data_disks_per_row);
1151 if (r5or6_blocks_per_row == 0) {
1152 err_msg = "invalid RAID-5 or RAID-6 map";
1153 goto bad_raid_map;
1154 }
1155 }
1156
1157 return 0;
1158
1159bad_raid_map:
d87d5474 1160 dev_warn(&ctrl_info->pci_dev->dev,
38a7338a
KB		 1161 "logical device %08x%08x %s\n",
1162 *((u32 *)&device->scsi3addr),
1163 *((u32 *)&device->scsi3addr[4]), err_msg);
6c223761
KB		 1164
1165 return -EINVAL;
1166}
1167
1168static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1169 struct pqi_scsi_dev *device)
1170{
1171 int rc;
a91aaae0 1172 u32 raid_map_size;
6c223761
KB		 1173 struct raid_map *raid_map;
1174
1175 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1176 if (!raid_map)
1177 return -ENOMEM;
1178
a91aaae0
AK		 1179 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1180 device->scsi3addr, raid_map, sizeof(*raid_map),
1181 0, NULL, NO_TIMEOUT);
1182
6c223761
KB		 1183 if (rc)
1184 goto error;
1185
a91aaae0 1186 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
6c223761 1187
a91aaae0 1188 if (raid_map_size > sizeof(*raid_map)) {
6c223761 1189
a91aaae0
AK		 1190 kfree(raid_map);
1191
1192 raid_map = kmalloc(raid_map_size, GFP_KERNEL);
1193 if (!raid_map)
1194 return -ENOMEM;
1195
1196 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1197 device->scsi3addr, raid_map, raid_map_size,
1198 0, NULL, NO_TIMEOUT);
1199 if (rc)
1200 goto error;
1201
1202 if (get_unaligned_le32(&raid_map->structure_size)
1203 != raid_map_size) {
1204 dev_warn(&ctrl_info->pci_dev->dev,
1205 "Requested %d bytes, received %d bytes",
1206 raid_map_size,
1207 get_unaligned_le32(&raid_map->structure_size));
1208 goto error;
1209 }
1210 }
6c223761
KB		 1211
1212 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1213 if (rc)
1214 goto error;
1215
1216 device->raid_map = raid_map;
1217
1218 return 0;
1219
1220error:
1221 kfree(raid_map);
1222
1223 return rc;
1224}
1225
588a63fe 1226static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1227 struct pqi_scsi_dev *device)
1228{
1229 int rc;
1230 u8 *buffer;
588a63fe 1231 u8 bypass_status;
6c223761
KB		 1232
1233 buffer = kmalloc(64, GFP_KERNEL);
1234 if (!buffer)
1235 return;
1236
1237 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
588a63fe 1238 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
6c223761
KB		 1239 if (rc)
1240 goto out;
1241
694c5d5b
KB		 1242#define RAID_BYPASS_STATUS 4
1243#define RAID_BYPASS_CONFIGURED 0x1
1244#define RAID_BYPASS_ENABLED 0x2
6c223761 1245
588a63fe
KB		 1246 bypass_status = buffer[RAID_BYPASS_STATUS];
1247 device->raid_bypass_configured =
1248 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1249 if (device->raid_bypass_configured &&
1250 (bypass_status & RAID_BYPASS_ENABLED) &&
1251 pqi_get_raid_map(ctrl_info, device) == 0)
1252 device->raid_bypass_enabled = true;
6c223761
KB		 1253
1254out:
1255 kfree(buffer);
1256}
1257
1258/*
1259 * Use vendor-specific VPD to determine online/offline status of a volume.
1260 */
1261
1262static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1263 struct pqi_scsi_dev *device)
1264{
1265 int rc;
1266 size_t page_length;
1267 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1268 bool volume_offline = true;
1269 u32 volume_flags;
1270 struct ciss_vpd_logical_volume_status *vpd;
1271
1272 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1273 if (!vpd)
1274 goto no_buffer;
1275
1276 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1277 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1278 if (rc)
1279 goto out;
1280
7ff44499
DC		 1281 if (vpd->page_code != CISS_VPD_LV_STATUS)
1282 goto out;
1283
6c223761
KB		 1284 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1285 volume_status) + vpd->page_length;
1286 if (page_length < sizeof(*vpd))
1287 goto out;
1288
1289 volume_status = vpd->volume_status;
1290 volume_flags = get_unaligned_be32(&vpd->flags);
1291 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1292
1293out:
1294 kfree(vpd);
1295no_buffer:
1296 device->volume_status = volume_status;
1297 device->volume_offline = volume_offline;
1298}
1299
ce143793
KB		 1300static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info,
1301 struct pqi_scsi_dev *device,
1302 struct bmic_identify_physical_device *id_phys)
1303{
1304 int rc;
26b390ab 1305
ce143793
KB		 1306 memset(id_phys, 0, sizeof(*id_phys));
1307
1308 rc = pqi_identify_physical_device(ctrl_info, device,
1309 id_phys, sizeof(*id_phys));
1310 if (rc) {
1311 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1312 return rc;
1313 }
1314
1315 scsi_sanitize_inquiry_string(&id_phys->model[0], 8);
1316 scsi_sanitize_inquiry_string(&id_phys->model[8], 16);
1317
1318 memcpy(device->vendor, &id_phys->model[0], sizeof(device->vendor));
1319 memcpy(device->model, &id_phys->model[8], sizeof(device->model));
1320
1321 device->box_index = id_phys->box_index;
1322 device->phys_box_on_bus = id_phys->phys_box_on_bus;
1323 device->phy_connected_dev_type = id_phys->phy_connected_dev_type[0];
1324 device->queue_depth =
1325 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1326 device->active_path_index = id_phys->active_path_number;
1327 device->path_map = id_phys->redundant_path_present_map;
1328 memcpy(&device->box,
1329 &id_phys->alternate_paths_phys_box_on_port,
1330 sizeof(device->box));
1331 memcpy(&device->phys_connector,
1332 &id_phys->alternate_paths_phys_connector,
1333 sizeof(device->phys_connector));
1334 device->bay = id_phys->phys_bay_in_box;
1335
1336 return 0;
1337}
1338
1339static int pqi_get_logical_device_info(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1340 struct pqi_scsi_dev *device)
1341{
1342 int rc;
1343 u8 *buffer;
3d46a59a 1344
6c223761
KB		 1345 buffer = kmalloc(64, GFP_KERNEL);
1346 if (!buffer)
1347 return -ENOMEM;
1348
1349 /* Send an inquiry to the device to see what it is. */
ce143793
KB		 1350 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64);
1351 if (rc)
1352 goto out;
6c223761
KB		 1353
1354 scsi_sanitize_inquiry_string(&buffer[8], 8);
1355 scsi_sanitize_inquiry_string(&buffer[16], 16);
1356
1357 device->devtype = buffer[0] & 0x1f;
cbe0c7b1
KB		 1358 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1359 memcpy(device->model, &buffer[16], sizeof(device->model));
6c223761 1360
ce143793 1361 if (device->devtype == TYPE_DISK) {
bd10cf0b
KB		 1362 if (device->is_external_raid_device) {
1363 device->raid_level = SA_RAID_UNKNOWN;
1364 device->volume_status = CISS_LV_OK;
1365 device->volume_offline = false;
1366 } else {
1367 pqi_get_raid_level(ctrl_info, device);
588a63fe 1368 pqi_get_raid_bypass_status(ctrl_info, device);
bd10cf0b
KB		 1369 pqi_get_volume_status(ctrl_info, device);
1370 }
6c223761
KB		 1371 }
1372
1373out:
1374 kfree(buffer);
1375
1376 return rc;
1377}
1378
ce143793 1379static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 1380 struct pqi_scsi_dev *device,
1381 struct bmic_identify_physical_device *id_phys)
1382{
1383 int rc;
1384
ce143793
KB		 1385 if (device->is_expander_smp_device)
1386 return 0;
6c223761 1387
ce143793
KB		 1388 if (pqi_is_logical_device(device))
1389 rc = pqi_get_logical_device_info(ctrl_info, device);
1390 else
1391 rc = pqi_get_physical_device_info(ctrl_info, device, id_phys);
694c5d5b 1392
ce143793 1393 return rc;
6c223761
KB		 1394}
1395
1396static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1397 struct pqi_scsi_dev *device)
1398{
1399 char *status;
1400 static const char unknown_state_str[] =
1401 "Volume is in an unknown state (%u)";
1402 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1403
1404 switch (device->volume_status) {
1405 case CISS_LV_OK:
1406 status = "Volume online";
1407 break;
1408 case CISS_LV_FAILED:
1409 status = "Volume failed";
1410 break;
1411 case CISS_LV_NOT_CONFIGURED:
1412 status = "Volume not configured";
1413 break;
1414 case CISS_LV_DEGRADED:
1415 status = "Volume degraded";
1416 break;
1417 case CISS_LV_READY_FOR_RECOVERY:
1418 status = "Volume ready for recovery operation";
1419 break;
1420 case CISS_LV_UNDERGOING_RECOVERY:
1421 status = "Volume undergoing recovery";
1422 break;
1423 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1424 status = "Wrong physical drive was replaced";
1425 break;
1426 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1427 status = "A physical drive not properly connected";
1428 break;
1429 case CISS_LV_HARDWARE_OVERHEATING:
1430 status = "Hardware is overheating";
1431 break;
1432 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1433 status = "Hardware has overheated";
1434 break;
1435 case CISS_LV_UNDERGOING_EXPANSION:
1436 status = "Volume undergoing expansion";
1437 break;
1438 case CISS_LV_NOT_AVAILABLE:
1439 status = "Volume waiting for transforming volume";
1440 break;
1441 case CISS_LV_QUEUED_FOR_EXPANSION:
1442 status = "Volume queued for expansion";
1443 break;
1444 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1445 status = "Volume disabled due to SCSI ID conflict";
1446 break;
1447 case CISS_LV_EJECTED:
1448 status = "Volume has been ejected";
1449 break;
1450 case CISS_LV_UNDERGOING_ERASE:
1451 status = "Volume undergoing background erase";
1452 break;
1453 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1454 status = "Volume ready for predictive spare rebuild";
1455 break;
1456 case CISS_LV_UNDERGOING_RPI:
1457 status = "Volume undergoing rapid parity initialization";
1458 break;
1459 case CISS_LV_PENDING_RPI:
1460 status = "Volume queued for rapid parity initialization";
1461 break;
1462 case CISS_LV_ENCRYPTED_NO_KEY:
1463 status = "Encrypted volume inaccessible - key not present";
1464 break;
1465 case CISS_LV_UNDERGOING_ENCRYPTION:
1466 status = "Volume undergoing encryption process";
1467 break;
1468 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1469 status = "Volume undergoing encryption re-keying process";
1470 break;
1471 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
d87d5474 1472 status = "Volume encrypted but encryption is disabled";
6c223761
KB		 1473 break;
1474 case CISS_LV_PENDING_ENCRYPTION:
1475 status = "Volume pending migration to encrypted state";
1476 break;
1477 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1478 status = "Volume pending encryption rekeying";
1479 break;
1480 case CISS_LV_NOT_SUPPORTED:
1481 status = "Volume not supported on this controller";
1482 break;
1483 case CISS_LV_STATUS_UNAVAILABLE:
1484 status = "Volume status not available";
1485 break;
1486 default:
1487 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1488 unknown_state_str, device->volume_status);
1489 status = unknown_state_buffer;
1490 break;
1491 }
1492
1493 dev_info(&ctrl_info->pci_dev->dev,
1494 "scsi %d:%d:%d:%d %s\n",
1495 ctrl_info->scsi_host->host_no,
1496 device->bus, device->target, device->lun, status);
1497}
1498
6c223761
KB		 1499static void pqi_rescan_worker(struct work_struct *work)
1500{
1501 struct pqi_ctrl_info *ctrl_info;
1502
1503 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1504 rescan_work);
1505
1506 pqi_scan_scsi_devices(ctrl_info);
1507}
1508
1509static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1510 struct pqi_scsi_dev *device)
1511{
1512 int rc;
1513
1514 if (pqi_is_logical_device(device))
1515 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1516 device->target, device->lun);
1517 else
1518 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1519
1520 return rc;
1521}
1522
1e46731e
MR		 1523#define PQI_PENDING_IO_TIMEOUT_SECS 20
1524
6c223761
KB		 1525static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info,
1526 struct pqi_scsi_dev *device)
1527{
1e46731e
MR		 1528 int rc;
1529
1530 pqi_device_remove_start(device);
1531
4d15ad38 1532 rc = pqi_device_wait_for_pending_io(ctrl_info, device, PQI_PENDING_IO_TIMEOUT_SECS);
1e46731e
MR		 1533 if (rc)
1534 dev_err(&ctrl_info->pci_dev->dev,
4d15ad38 1535 "scsi %d:%d:%d:%d removing device with %d outstanding command(s)\n",
1e46731e
MR		 1536 ctrl_info->scsi_host->host_no, device->bus,
1537 device->target, device->lun,
1538 atomic_read(&device->scsi_cmds_outstanding));
1539
6c223761
KB		 1540 if (pqi_is_logical_device(device))
1541 scsi_remove_device(device->sdev);
1542 else
1543 pqi_remove_sas_device(device);
1544}
1545
1546/* Assumes the SCSI device list lock is held. */
1547
1548static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1549 int bus, int target, int lun)
1550{
1551 struct pqi_scsi_dev *device;
1552
4d15ad38
KB		 1553 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
1554 if (device->bus == bus && device->target == target && device->lun == lun)
6c223761
KB		 1555 return device;
1556
1557 return NULL;
1558}
1559
1560static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1,
1561 struct pqi_scsi_dev *dev2)
1562{
1563 if (dev1->is_physical_device != dev2->is_physical_device)
1564 return false;
1565
1566 if (dev1->is_physical_device)
1567 return dev1->wwid == dev2->wwid;
1568
1569 return memcmp(dev1->volume_id, dev2->volume_id,
1570 sizeof(dev1->volume_id)) == 0;
1571}
1572
1573enum pqi_find_result {
1574 DEVICE_NOT_FOUND,
1575 DEVICE_CHANGED,
1576 DEVICE_SAME,
1577};
1578
1579static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
4d15ad38 1580 struct pqi_scsi_dev *device_to_find, struct pqi_scsi_dev **matching_device)
6c223761
KB		 1581{
1582 struct pqi_scsi_dev *device;
1583
4d15ad38
KB		 1584 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
1585 if (pqi_scsi3addr_equal(device_to_find->scsi3addr, device->scsi3addr)) {
6c223761
KB		 1586 *matching_device = device;
1587 if (pqi_device_equal(device_to_find, device)) {
1588 if (device_to_find->volume_offline)
1589 return DEVICE_CHANGED;
1590 return DEVICE_SAME;
1591 }
1592 return DEVICE_CHANGED;
1593 }
1594 }
1595
1596 return DEVICE_NOT_FOUND;
1597}
1598
3d46a59a
DB		 1599static inline const char *pqi_device_type(struct pqi_scsi_dev *device)
1600{
1601 if (device->is_expander_smp_device)
1602 return "Enclosure SMP ";
1603
1604 return scsi_device_type(device->devtype);
1605}
1606
6de783f6
KB		 1607#define PQI_DEV_INFO_BUFFER_LENGTH 128
1608
6c223761
KB		 1609static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1610 char *action, struct pqi_scsi_dev *device)
1611{
6de783f6
KB		 1612 ssize_t count;
1613 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1614
1615 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1616 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1617
1618 if (device->target_lun_valid)
181aea89 1619 count += scnprintf(buffer + count,
6de783f6
KB		 1620 PQI_DEV_INFO_BUFFER_LENGTH - count,
1621 "%d:%d",
1622 device->target,
1623 device->lun);
1624 else
181aea89 1625 count += scnprintf(buffer + count,
6de783f6
KB		 1626 PQI_DEV_INFO_BUFFER_LENGTH - count,
1627 "-:-");
1628
1629 if (pqi_is_logical_device(device))
181aea89 1630 count += scnprintf(buffer + count,
6de783f6
KB		 1631 PQI_DEV_INFO_BUFFER_LENGTH - count,
1632 " %08x%08x",
1633 *((u32 *)&device->scsi3addr),
1634 *((u32 *)&device->scsi3addr[4]));
1635 else
181aea89 1636 count += scnprintf(buffer + count,
6de783f6
KB		 1637 PQI_DEV_INFO_BUFFER_LENGTH - count,
1638 " %016llx", device->sas_address);
1639
181aea89 1640 count += scnprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
6de783f6 1641 " %s %.8s %.16s ",
3d46a59a 1642 pqi_device_type(device),
6c223761 1643 device->vendor,
6de783f6
KB		 1644 device->model);
1645
1646 if (pqi_is_logical_device(device)) {
1647 if (device->devtype == TYPE_DISK)
181aea89 1648 count += scnprintf(buffer + count,
6de783f6
KB		 1649 PQI_DEV_INFO_BUFFER_LENGTH - count,
1650 "SSDSmartPathCap%c En%c %-12s",
588a63fe
KB		 1651 device->raid_bypass_configured ? '+' : '-',
1652 device->raid_bypass_enabled ? '+' : '-',
6de783f6
KB		 1653 pqi_raid_level_to_string(device->raid_level));
1654 } else {
181aea89 1655 count += scnprintf(buffer + count,
6de783f6
KB		 1656 PQI_DEV_INFO_BUFFER_LENGTH - count,
1657 "AIO%c", device->aio_enabled ? '+' : '-');
1658 if (device->devtype == TYPE_DISK ||
1659 device->devtype == TYPE_ZBC)
181aea89 1660 count += scnprintf(buffer + count,
6de783f6
KB		 1661 PQI_DEV_INFO_BUFFER_LENGTH - count,
1662 " qd=%-6d", device->queue_depth);
1663 }
1664
1665 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
6c223761
KB		 1666}
1667
1668/* Assumes the SCSI device list lock is held. */
1669
1670static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1671 struct pqi_scsi_dev *new_device)
1672{
1673 existing_device->devtype = new_device->devtype;
1674 existing_device->device_type = new_device->device_type;
1675 existing_device->bus = new_device->bus;
1676 if (new_device->target_lun_valid) {
1677 existing_device->target = new_device->target;
1678 existing_device->lun = new_device->lun;
1679 existing_device->target_lun_valid = true;
1680 }
1681
244ca45e
MR		 1682 if ((existing_device->volume_status == CISS_LV_QUEUED_FOR_EXPANSION ||
1683 existing_device->volume_status == CISS_LV_UNDERGOING_EXPANSION) &&
1684 new_device->volume_status == CISS_LV_OK)
1685 existing_device->rescan = true;
1686
6c223761
KB		 1687 /* By definition, the scsi3addr and wwid fields are already the same. */
1688
1689 existing_device->is_physical_device = new_device->is_physical_device;
bd10cf0b
KB		 1690 existing_device->is_external_raid_device =
1691 new_device->is_external_raid_device;
3d46a59a
DB		 1692 existing_device->is_expander_smp_device =
1693 new_device->is_expander_smp_device;
6c223761
KB		 1694 existing_device->aio_enabled = new_device->aio_enabled;
1695 memcpy(existing_device->vendor, new_device->vendor,
1696 sizeof(existing_device->vendor));
1697 memcpy(existing_device->model, new_device->model,
1698 sizeof(existing_device->model));
1699 existing_device->sas_address = new_device->sas_address;
1700 existing_device->raid_level = new_device->raid_level;
1701 existing_device->queue_depth = new_device->queue_depth;
1702 existing_device->aio_handle = new_device->aio_handle;
1703 existing_device->volume_status = new_device->volume_status;
1704 existing_device->active_path_index = new_device->active_path_index;
1705 existing_device->path_map = new_device->path_map;
1706 existing_device->bay = new_device->bay;
2d2ad4bc
GW		 1707 existing_device->box_index = new_device->box_index;
1708 existing_device->phys_box_on_bus = new_device->phys_box_on_bus;
1709 existing_device->phy_connected_dev_type =
1710 new_device->phy_connected_dev_type;
6c223761
KB		 1711 memcpy(existing_device->box, new_device->box,
1712 sizeof(existing_device->box));
1713 memcpy(existing_device->phys_connector, new_device->phys_connector,
1714 sizeof(existing_device->phys_connector));
6c223761
KB		 1715 existing_device->offload_to_mirror = 0;
1716 kfree(existing_device->raid_map);
1717 existing_device->raid_map = new_device->raid_map;
588a63fe
KB		 1718 existing_device->raid_bypass_configured =
1719 new_device->raid_bypass_configured;
1720 existing_device->raid_bypass_enabled =
1721 new_device->raid_bypass_enabled;
a9a68101 1722 existing_device->device_offline = false;
6c223761
KB		 1723
1724 /* To prevent this from being freed later. */
1725 new_device->raid_map = NULL;
1726}
1727
1728static inline void pqi_free_device(struct pqi_scsi_dev *device)
1729{
1730 if (device) {
1731 kfree(device->raid_map);
1732 kfree(device);
1733 }
1734}
1735
1736/*
1737 * Called when exposing a new device to the OS fails in order to re-adjust
1738 * our internal SCSI device list to match the SCSI ML's view.
1739 */
1740
1741static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1742 struct pqi_scsi_dev *device)
1743{
1744 unsigned long flags;
1745
1746 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1747 list_del(&device->scsi_device_list_entry);
1748 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1749
1750 /* Allow the device structure to be freed later. */
1751 device->keep_device = false;
1752}
1753
3d46a59a
DB		 1754static inline bool pqi_is_device_added(struct pqi_scsi_dev *device)
1755{
1756 if (device->is_expander_smp_device)
1757 return device->sas_port != NULL;
1758
1759 return device->sdev != NULL;
1760}
1761
6c223761
KB		 1762static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1763 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1764{
1765 int rc;
1766 unsigned int i;
1767 unsigned long flags;
1768 enum pqi_find_result find_result;
1769 struct pqi_scsi_dev *device;
1770 struct pqi_scsi_dev *next;
1771 struct pqi_scsi_dev *matching_device;
8a994a04
KB		 1772 LIST_HEAD(add_list);
1773 LIST_HEAD(delete_list);
6c223761
KB		 1774
1775 /*
1776 * The idea here is to do as little work as possible while holding the
1777 * spinlock. That's why we go to great pains to defer anything other
1778 * than updating the internal device list until after we release the
1779 * spinlock.
1780 */
1781
1782 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1783
1784 /* Assume that all devices in the existing list have gone away. */
4d15ad38 1785 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
6c223761
KB		 1786 device->device_gone = true;
1787
1788 for (i = 0; i < num_new_devices; i++) {
1789 device = new_device_list[i];
1790
1791 find_result = pqi_scsi_find_entry(ctrl_info, device,
694c5d5b 1792 &matching_device);
6c223761
KB		 1793
1794 switch (find_result) {
1795 case DEVICE_SAME:
1796 /*
1797 * The newly found device is already in the existing
1798 * device list.
1799 */
1800 device->new_device = false;
1801 matching_device->device_gone = false;
1802 pqi_scsi_update_device(matching_device, device);
1803 break;
1804 case DEVICE_NOT_FOUND:
1805 /*
1806 * The newly found device is NOT in the existing device
1807 * list.
1808 */
1809 device->new_device = true;
1810 break;
1811 case DEVICE_CHANGED:
1812 /*
1813 * The original device has gone away and we need to add
1814 * the new device.
1815 */
1816 device->new_device = true;
1817 break;
6c223761
KB		 1818 }
1819 }
1820
1821 /* Process all devices that have gone away. */
1822 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1823 scsi_device_list_entry) {
1824 if (device->device_gone) {
4d15ad38 1825 list_del_init(&device->scsi_device_list_entry);
6c223761
KB		 1826 list_add_tail(&device->delete_list_entry, &delete_list);
1827 }
1828 }
1829
1830 /* Process all new devices. */
1831 for (i = 0; i < num_new_devices; i++) {
1832 device = new_device_list[i];
1833 if (!device->new_device)
1834 continue;
1835 if (device->volume_offline)
1836 continue;
1837 list_add_tail(&device->scsi_device_list_entry,
1838 &ctrl_info->scsi_device_list);
1839 list_add_tail(&device->add_list_entry, &add_list);
1840 /* To prevent this device structure from being freed later. */
1841 device->keep_device = true;
1842 }
1843
6c223761
KB		 1844 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1845
4fd22c13
MR		 1846 if (pqi_ctrl_in_ofa(ctrl_info))
1847 pqi_ctrl_ofa_done(ctrl_info);
1848
6c223761 1849 /* Remove all devices that have gone away. */
4d15ad38 1850 list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) {
6c223761
KB		 1851 if (device->volume_offline) {
1852 pqi_dev_info(ctrl_info, "offline", device);
1853 pqi_show_volume_status(ctrl_info, device);
6c223761
KB		 1854 }
1855 list_del(&device->delete_list_entry);
4d15ad38
KB		 1856 if (pqi_is_device_added(device)) {
1857 pqi_remove_device(ctrl_info, device);
1858 } else {
1859 if (!device->volume_offline)
1860 pqi_dev_info(ctrl_info, "removed", device);
1861 pqi_free_device(device);
1862 }
6c223761
KB		 1863 }
1864
1865 /*
1866 * Notify the SCSI ML if the queue depth of any existing device has
1867 * changed.
1868 */
1869 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1870 scsi_device_list_entry) {
244ca45e
MR		 1871 if (device->sdev) {
1872 if (device->queue_depth !=
1873 device->advertised_queue_depth) {
1874 device->advertised_queue_depth = device->queue_depth;
1875 scsi_change_queue_depth(device->sdev,
1876 device->advertised_queue_depth);
1877 }
1878 if (device->rescan) {
1879 scsi_rescan_device(&device->sdev->sdev_gendev);
1880 device->rescan = false;
1881 }
6c223761
KB		 1882 }
1883 }
1884
1885 /* Expose any new devices. */
1886 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
3d46a59a 1887 if (!pqi_is_device_added(device)) {
6c223761 1888 rc = pqi_add_device(ctrl_info, device);
ce143793
KB		 1889 if (rc == 0) {
1890 pqi_dev_info(ctrl_info, "added", device);
1891 } else {
6c223761
KB		 1892 dev_warn(&ctrl_info->pci_dev->dev,
1893 "scsi %d:%d:%d:%d addition failed, device not added\n",
1894 ctrl_info->scsi_host->host_no,
1895 device->bus, device->target,
1896 device->lun);
1897 pqi_fixup_botched_add(ctrl_info, device);
6c223761
KB		 1898 }
1899 }
6c223761
KB		 1900 }
1901}
1902
ce143793 1903static inline bool pqi_is_supported_device(struct pqi_scsi_dev *device)
6c223761 1904{
ce143793
KB		 1905 /*
1906 * Only support the HBA controller itself as a RAID
1907 * controller. If it's a RAID controller other than
1908 * the HBA itself (an external RAID controller, for
1909 * example), we don't support it.
1910 */
1911 if (device->device_type == SA_DEVICE_TYPE_CONTROLLER &&
1912 !pqi_is_hba_lunid(device->scsi3addr))
1913 return false;
6c223761 1914
ce143793 1915 return true;
6c223761
KB		 1916}
1917
94086f5b 1918static inline bool pqi_skip_device(u8 *scsi3addr)
6c223761 1919{
94086f5b
KB		 1920 /* Ignore all masked devices. */
1921 if (MASKED_DEVICE(scsi3addr))
6c223761 1922 return true;
6c223761
KB		 1923
1924 return false;
1925}
1926
522bc026
DC		 1927static inline void pqi_mask_device(u8 *scsi3addr)
1928{
1929 scsi3addr[3] |= 0xc0;
1930}
1931
3d46a59a
DB		 1932static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device)
1933{
ce143793
KB		 1934 switch (device->device_type) {
1935 case SA_DEVICE_TYPE_SAS:
1936 case SA_DEVICE_TYPE_EXPANDER_SMP:
1937 case SA_DEVICE_TYPE_SES:
3d46a59a
DB		 1938 return true;
1939 }
1940
1941 return false;
1942}
1943
cd128244
DC		 1944static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
1945{
1946 return !device->is_physical_device ||
1947 !pqi_skip_device(device->scsi3addr);
1948}
1949
6c223761
KB		 1950static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1951{
1952 int i;
1953 int rc;
8a994a04 1954 LIST_HEAD(new_device_list_head);
6c223761
KB		 1955 struct report_phys_lun_extended *physdev_list = NULL;
1956 struct report_log_lun_extended *logdev_list = NULL;
1957 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
1958 struct report_log_lun_extended_entry *log_lun_ext_entry;
1959 struct bmic_identify_physical_device *id_phys = NULL;
1960 u32 num_physicals;
1961 u32 num_logicals;
1962 struct pqi_scsi_dev **new_device_list = NULL;
1963 struct pqi_scsi_dev *device;
1964 struct pqi_scsi_dev *next;
1965 unsigned int num_new_devices;
1966 unsigned int num_valid_devices;
1967 bool is_physical_device;
1968 u8 *scsi3addr;
5e6a9760
GW		 1969 unsigned int physical_index;
1970 unsigned int logical_index;
6c223761 1971 static char *out_of_memory_msg =
6de783f6 1972 "failed to allocate memory, device discovery stopped";
6c223761 1973
6c223761
KB		 1974 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
1975 if (rc)
1976 goto out;
1977
1978 if (physdev_list)
1979 num_physicals =
1980 get_unaligned_be32(&physdev_list->header.list_length)
1981 / sizeof(physdev_list->lun_entries[0]);
1982 else
1983 num_physicals = 0;
1984
1985 if (logdev_list)
1986 num_logicals =
1987 get_unaligned_be32(&logdev_list->header.list_length)
1988 / sizeof(logdev_list->lun_entries[0]);
1989 else
1990 num_logicals = 0;
1991
1992 if (num_physicals) {
1993 /*
1994 * We need this buffer for calls to pqi_get_physical_disk_info()
1995 * below. We allocate it here instead of inside
1996 * pqi_get_physical_disk_info() because it's a fairly large
1997 * buffer.
1998 */
1999 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
2000 if (!id_phys) {
2001 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2002 out_of_memory_msg);
2003 rc = -ENOMEM;
2004 goto out;
2005 }
522bc026 2006
694c5d5b 2007 if (pqi_hide_vsep) {
522bc026
DC		 2008 for (i = num_physicals - 1; i >= 0; i--) {
2009 phys_lun_ext_entry =
2010 &physdev_list->lun_entries[i];
2011 if (CISS_GET_DRIVE_NUMBER(
2012 phys_lun_ext_entry->lunid) ==
2013 PQI_VSEP_CISS_BTL) {
2014 pqi_mask_device(
2015 phys_lun_ext_entry->lunid);
2016 break;
2017 }
2018 }
2019 }
6c223761
KB		 2020 }
2021
2022 num_new_devices = num_physicals + num_logicals;
2023
6da2ec56
KC		 2024 new_device_list = kmalloc_array(num_new_devices,
2025 sizeof(*new_device_list),
2026 GFP_KERNEL);
6c223761
KB		 2027 if (!new_device_list) {
2028 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
2029 rc = -ENOMEM;
2030 goto out;
2031 }
2032
2033 for (i = 0; i < num_new_devices; i++) {
2034 device = kzalloc(sizeof(*device), GFP_KERNEL);
2035 if (!device) {
2036 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2037 out_of_memory_msg);
2038 rc = -ENOMEM;
2039 goto out;
2040 }
2041 list_add_tail(&device->new_device_list_entry,
2042 &new_device_list_head);
2043 }
2044
2045 device = NULL;
2046 num_valid_devices = 0;
5e6a9760
GW		 2047 physical_index = 0;
2048 logical_index = 0;
6c223761
KB		 2049
2050 for (i = 0; i < num_new_devices; i++) {
2051
5e6a9760
GW		 2052 if ((!pqi_expose_ld_first && i < num_physicals) ||
2053 (pqi_expose_ld_first && i >= num_logicals)) {
6c223761 2054 is_physical_device = true;
5e6a9760
GW		 2055 phys_lun_ext_entry =
2056 &physdev_list->lun_entries[physical_index++];
6c223761
KB		 2057 log_lun_ext_entry = NULL;
2058 scsi3addr = phys_lun_ext_entry->lunid;
2059 } else {
2060 is_physical_device = false;
2061 phys_lun_ext_entry = NULL;
2062 log_lun_ext_entry =
5e6a9760 2063 &logdev_list->lun_entries[logical_index++];
6c223761
KB		 2064 scsi3addr = log_lun_ext_entry->lunid;
2065 }
2066
94086f5b 2067 if (is_physical_device && pqi_skip_device(scsi3addr))
6c223761
KB		 2068 continue;
2069
2070 if (device)
2071 device = list_next_entry(device, new_device_list_entry);
2072 else
2073 device = list_first_entry(&new_device_list_head,
2074 struct pqi_scsi_dev, new_device_list_entry);
2075
2076 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
2077 device->is_physical_device = is_physical_device;
3d46a59a 2078 if (is_physical_device) {
ce143793
KB		 2079 device->device_type = phys_lun_ext_entry->device_type;
2080 if (device->device_type == SA_DEVICE_TYPE_EXPANDER_SMP)
3d46a59a
DB		 2081 device->is_expander_smp_device = true;
2082 } else {
bd10cf0b
KB		 2083 device->is_external_raid_device =
2084 pqi_is_external_raid_addr(scsi3addr);
3d46a59a 2085 }
6c223761 2086
ce143793
KB		 2087 if (!pqi_is_supported_device(device))
2088 continue;
2089
6c223761 2090 /* Gather information about the device. */
ce143793 2091 rc = pqi_get_device_info(ctrl_info, device, id_phys);
6c223761
KB		 2092 if (rc == -ENOMEM) {
2093 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2094 out_of_memory_msg);
2095 goto out;
2096 }
2097 if (rc) {
6de783f6
KB		 2098 if (device->is_physical_device)
2099 dev_warn(&ctrl_info->pci_dev->dev,
2100 "obtaining device info failed, skipping physical device %016llx\n",
2101 get_unaligned_be64(
2102 &phys_lun_ext_entry->wwid));
2103 else
2104 dev_warn(&ctrl_info->pci_dev->dev,
2105 "obtaining device info failed, skipping logical device %08x%08x\n",
2106 *((u32 *)&device->scsi3addr),
2107 *((u32 *)&device->scsi3addr[4]));
6c223761
KB		 2108 rc = 0;
2109 continue;
2110 }
2111
6c223761
KB		 2112 pqi_assign_bus_target_lun(device);
2113
6c223761
KB		 2114 if (device->is_physical_device) {
2115 device->wwid = phys_lun_ext_entry->wwid;
2116 if ((phys_lun_ext_entry->device_flags &
694c5d5b 2117 CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED) &&
3d46a59a 2118 phys_lun_ext_entry->aio_handle) {
6c223761 2119 device->aio_enabled = true;
9e322310
CIK		 2120 device->aio_handle =
2121 phys_lun_ext_entry->aio_handle;
3d46a59a 2122 }
6c223761
KB		 2123 } else {
2124 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
2125 sizeof(device->volume_id));
2126 }
2127
3d46a59a
DB		 2128 if (pqi_is_device_with_sas_address(device))
2129 device->sas_address = get_unaligned_be64(&device->wwid);
6c223761
KB		 2130
2131 new_device_list[num_valid_devices++] = device;
2132 }
2133
2134 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
2135
2136out:
2137 list_for_each_entry_safe(device, next, &new_device_list_head,
2138 new_device_list_entry) {
2139 if (device->keep_device)
2140 continue;
2141 list_del(&device->new_device_list_entry);
2142 pqi_free_device(device);
2143 }
2144
2145 kfree(new_device_list);
2146 kfree(physdev_list);
2147 kfree(logdev_list);
2148 kfree(id_phys);
2149
2150 return rc;
2151}
2152
6c223761
KB		 2153static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2154{
530dd8a7 2155 int rc = 0;
6c223761
KB		 2156
2157 if (pqi_ctrl_offline(ctrl_info))
2158 return -ENXIO;
2159
530dd8a7 2160 if (!mutex_trylock(&ctrl_info->scan_mutex)) {
5f310425 2161 pqi_schedule_rescan_worker_delayed(ctrl_info);
9946a398 2162 rc = -EINPROGRESS;
530dd8a7
MR		 2163 } else {
2164 rc = pqi_update_scsi_devices(ctrl_info);
2165 if (rc)
2166 pqi_schedule_rescan_worker_delayed(ctrl_info);
2167 mutex_unlock(&ctrl_info->scan_mutex);
2168 }
6c223761
KB		 2169
2170 return rc;
2171}
2172
2173static void pqi_scan_start(struct Scsi_Host *shost)
2174{
4fd22c13
MR		 2175 struct pqi_ctrl_info *ctrl_info;
2176
2177 ctrl_info = shost_to_hba(shost);
2178 if (pqi_ctrl_in_ofa(ctrl_info))
2179 return;
2180
2181 pqi_scan_scsi_devices(ctrl_info);
6c223761
KB		 2182}
2183
2184/* Returns TRUE if scan is finished. */
2185
2186static int pqi_scan_finished(struct Scsi_Host *shost,
2187 unsigned long elapsed_time)
2188{
2189 struct pqi_ctrl_info *ctrl_info;
2190
2191 ctrl_info = shost_priv(shost);
2192
2193 return !mutex_is_locked(&ctrl_info->scan_mutex);
2194}
2195
061ef06a
KB		 2196static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
2197{
2198 mutex_lock(&ctrl_info->scan_mutex);
2199 mutex_unlock(&ctrl_info->scan_mutex);
2200}
2201
2202static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
2203{
2204 mutex_lock(&ctrl_info->lun_reset_mutex);
2205 mutex_unlock(&ctrl_info->lun_reset_mutex);
2206}
2207
4fd22c13
MR		 2208static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info)
2209{
2210 mutex_lock(&ctrl_info->ofa_mutex);
2211 mutex_unlock(&ctrl_info->ofa_mutex);
2212}
2213
6c223761
KB		 2214static inline void pqi_set_encryption_info(
2215 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map,
2216 u64 first_block)
2217{
2218 u32 volume_blk_size;
2219
2220 /*
2221 * Set the encryption tweak values based on logical block address.
2222 * If the block size is 512, the tweak value is equal to the LBA.
2223 * For other block sizes, tweak value is (LBA * block size) / 512.
2224 */
2225 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2226 if (volume_blk_size != 512)
2227 first_block = (first_block * volume_blk_size) / 512;
2228
2229 encryption_info->data_encryption_key_index =
2230 get_unaligned_le16(&raid_map->data_encryption_key_index);
2231 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2232 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2233}
2234
2235/*
588a63fe 2236 * Attempt to perform RAID bypass mapping for a logical volume I/O.
6c223761
KB		 2237 */
2238
2239#define PQI_RAID_BYPASS_INELIGIBLE 1
2240
2241static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2242 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2243 struct pqi_queue_group *queue_group)
2244{
2245 struct raid_map *raid_map;
2246 bool is_write = false;
2247 u32 map_index;
2248 u64 first_block;
2249 u64 last_block;
2250 u32 block_cnt;
2251 u32 blocks_per_row;
2252 u64 first_row;
2253 u64 last_row;
2254 u32 first_row_offset;
2255 u32 last_row_offset;
2256 u32 first_column;
2257 u32 last_column;
2258 u64 r0_first_row;
2259 u64 r0_last_row;
2260 u32 r5or6_blocks_per_row;
2261 u64 r5or6_first_row;
2262 u64 r5or6_last_row;
2263 u32 r5or6_first_row_offset;
2264 u32 r5or6_last_row_offset;
2265 u32 r5or6_first_column;
2266 u32 r5or6_last_column;
2267 u16 data_disks_per_row;
2268 u32 total_disks_per_row;
2269 u16 layout_map_count;
2270 u32 stripesize;
2271 u16 strip_size;
2272 u32 first_group;
2273 u32 last_group;
2274 u32 current_group;
2275 u32 map_row;
2276 u32 aio_handle;
2277 u64 disk_block;
2278 u32 disk_block_cnt;
2279 u8 cdb[16];
2280 u8 cdb_length;
2281 int offload_to_mirror;
2282 struct pqi_encryption_info *encryption_info_ptr;
2283 struct pqi_encryption_info encryption_info;
2284#if BITS_PER_LONG == 32
2285 u64 tmpdiv;
2286#endif
2287
2288 /* Check for valid opcode, get LBA and block count. */
2289 switch (scmd->cmnd[0]) {
2290 case WRITE_6:
2291 is_write = true;
df561f66 2292 fallthrough;
6c223761 2293 case READ_6:
e018ef57
B		 2294 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2295 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
6c223761
KB		 2296 block_cnt = (u32)scmd->cmnd[4];
2297 if (block_cnt == 0)
2298 block_cnt = 256;
2299 break;
2300 case WRITE_10:
2301 is_write = true;
df561f66 2302 fallthrough;
6c223761
KB		 2303 case READ_10:
2304 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2305 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2306 break;
2307 case WRITE_12:
2308 is_write = true;
df561f66 2309 fallthrough;
6c223761
KB		 2310 case READ_12:
2311 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2312 block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2313 break;
2314 case WRITE_16:
2315 is_write = true;
df561f66 2316 fallthrough;
6c223761
KB		 2317 case READ_16:
2318 first_block = get_unaligned_be64(&scmd->cmnd[2]);
2319 block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2320 break;
2321 default:
2322 /* Process via normal I/O path. */
2323 return PQI_RAID_BYPASS_INELIGIBLE;
2324 }
2325
2326 /* Check for write to non-RAID-0. */
2327 if (is_write && device->raid_level != SA_RAID_0)
2328 return PQI_RAID_BYPASS_INELIGIBLE;
2329
2330 if (unlikely(block_cnt == 0))
2331 return PQI_RAID_BYPASS_INELIGIBLE;
2332
2333 last_block = first_block + block_cnt - 1;
2334 raid_map = device->raid_map;
2335
2336 /* Check for invalid block or wraparound. */
2337 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2338 last_block < first_block)
2339 return PQI_RAID_BYPASS_INELIGIBLE;
2340
2341 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row);
2342 strip_size = get_unaligned_le16(&raid_map->strip_size);
2343 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2344
2345 /* Calculate stripe information for the request. */
2346 blocks_per_row = data_disks_per_row * strip_size;
2347#if BITS_PER_LONG == 32
2348 tmpdiv = first_block;
2349 do_div(tmpdiv, blocks_per_row);
2350 first_row = tmpdiv;
2351 tmpdiv = last_block;
2352 do_div(tmpdiv, blocks_per_row);
2353 last_row = tmpdiv;
2354 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2355 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2356 tmpdiv = first_row_offset;
2357 do_div(tmpdiv, strip_size);
2358 first_column = tmpdiv;
2359 tmpdiv = last_row_offset;
2360 do_div(tmpdiv, strip_size);
2361 last_column = tmpdiv;
2362#else
2363 first_row = first_block / blocks_per_row;
2364 last_row = last_block / blocks_per_row;
2365 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2366 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2367 first_column = first_row_offset / strip_size;
2368 last_column = last_row_offset / strip_size;
2369#endif
2370
2371 /* If this isn't a single row/column then give to the controller. */
2372 if (first_row != last_row || first_column != last_column)
2373 return PQI_RAID_BYPASS_INELIGIBLE;
2374
2375 /* Proceeding with driver mapping. */
2376 total_disks_per_row = data_disks_per_row +
2377 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2378 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2379 get_unaligned_le16(&raid_map->row_cnt);
2380 map_index = (map_row * total_disks_per_row) + first_column;
2381
2382 /* RAID 1 */
2383 if (device->raid_level == SA_RAID_1) {
2384 if (device->offload_to_mirror)
2385 map_index += data_disks_per_row;
2386 device->offload_to_mirror = !device->offload_to_mirror;
2387 } else if (device->raid_level == SA_RAID_ADM) {
2388 /* RAID ADM */
2389 /*
2390 * Handles N-way mirrors (R1-ADM) and R10 with # of drives
2391 * divisible by 3.
2392 */
2393 offload_to_mirror = device->offload_to_mirror;
2394 if (offload_to_mirror == 0) {
2395 /* use physical disk in the first mirrored group. */
2396 map_index %= data_disks_per_row;
2397 } else {
2398 do {
2399 /*
2400 * Determine mirror group that map_index
2401 * indicates.
2402 */
2403 current_group = map_index / data_disks_per_row;
2404
2405 if (offload_to_mirror != current_group) {
2406 if (current_group <
2407 layout_map_count - 1) {
2408 /*
2409 * Select raid index from
2410 * next group.
2411 */
2412 map_index += data_disks_per_row;
2413 current_group++;
2414 } else {
2415 /*
2416 * Select raid index from first
2417 * group.
2418 */
2419 map_index %= data_disks_per_row;
2420 current_group = 0;
2421 }
2422 }
2423 } while (offload_to_mirror != current_group);
2424 }
2425
2426 /* Set mirror group to use next time. */
2427 offload_to_mirror =
2428 (offload_to_mirror >= layout_map_count - 1) ?
2429 0 : offload_to_mirror + 1;
6c223761
KB		 2430 device->offload_to_mirror = offload_to_mirror;
2431 /*
2432 * Avoid direct use of device->offload_to_mirror within this
2433 * function since multiple threads might simultaneously
2434 * increment it beyond the range of device->layout_map_count -1.
2435 */
2436 } else if ((device->raid_level == SA_RAID_5 ||
2437 device->raid_level == SA_RAID_6) && layout_map_count > 1) {
2438 /* RAID 50/60 */
2439 /* Verify first and last block are in same RAID group */
2440 r5or6_blocks_per_row = strip_size * data_disks_per_row;
2441 stripesize = r5or6_blocks_per_row * layout_map_count;
2442#if BITS_PER_LONG == 32
2443 tmpdiv = first_block;
2444 first_group = do_div(tmpdiv, stripesize);
2445 tmpdiv = first_group;
2446 do_div(tmpdiv, r5or6_blocks_per_row);
2447 first_group = tmpdiv;
2448 tmpdiv = last_block;
2449 last_group = do_div(tmpdiv, stripesize);
2450 tmpdiv = last_group;
2451 do_div(tmpdiv, r5or6_blocks_per_row);
2452 last_group = tmpdiv;
2453#else
2454 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
2455 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
2456#endif
2457 if (first_group != last_group)
2458 return PQI_RAID_BYPASS_INELIGIBLE;
2459
2460 /* Verify request is in a single row of RAID 5/6 */
2461#if BITS_PER_LONG == 32
2462 tmpdiv = first_block;
2463 do_div(tmpdiv, stripesize);
2464 first_row = r5or6_first_row = r0_first_row = tmpdiv;
2465 tmpdiv = last_block;
2466 do_div(tmpdiv, stripesize);
2467 r5or6_last_row = r0_last_row = tmpdiv;
2468#else
2469 first_row = r5or6_first_row = r0_first_row =
2470 first_block / stripesize;
2471 r5or6_last_row = r0_last_row = last_block / stripesize;
2472#endif
2473 if (r5or6_first_row != r5or6_last_row)
2474 return PQI_RAID_BYPASS_INELIGIBLE;
2475
2476 /* Verify request is in a single column */
2477#if BITS_PER_LONG == 32
2478 tmpdiv = first_block;
2479 first_row_offset = do_div(tmpdiv, stripesize);
2480 tmpdiv = first_row_offset;
2481 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row);
2482 r5or6_first_row_offset = first_row_offset;
2483 tmpdiv = last_block;
2484 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
2485 tmpdiv = r5or6_last_row_offset;
2486 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
2487 tmpdiv = r5or6_first_row_offset;
2488 do_div(tmpdiv, strip_size);
2489 first_column = r5or6_first_column = tmpdiv;
2490 tmpdiv = r5or6_last_row_offset;
2491 do_div(tmpdiv, strip_size);
2492 r5or6_last_column = tmpdiv;
2493#else
2494 first_row_offset = r5or6_first_row_offset =
2495 (u32)((first_block % stripesize) %
2496 r5or6_blocks_per_row);
2497
2498 r5or6_last_row_offset =
2499 (u32)((last_block % stripesize) %
2500 r5or6_blocks_per_row);
2501
2502 first_column = r5or6_first_row_offset / strip_size;
2503 r5or6_first_column = first_column;
2504 r5or6_last_column = r5or6_last_row_offset / strip_size;
2505#endif
2506 if (r5or6_first_column != r5or6_last_column)
2507 return PQI_RAID_BYPASS_INELIGIBLE;
2508
2509 /* Request is eligible */
2510 map_row =
2511 ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2512 get_unaligned_le16(&raid_map->row_cnt);
2513
2514 map_index = (first_group *
2515 (get_unaligned_le16(&raid_map->row_cnt) *
2516 total_disks_per_row)) +
2517 (map_row * total_disks_per_row) + first_column;
2518 }
2519
6c223761
KB		 2520 aio_handle = raid_map->disk_data[map_index].aio_handle;
2521 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2522 first_row * strip_size +
2523 (first_row_offset - first_column * strip_size);
2524 disk_block_cnt = block_cnt;
2525
2526 /* Handle differing logical/physical block sizes. */
2527 if (raid_map->phys_blk_shift) {
2528 disk_block <<= raid_map->phys_blk_shift;
2529 disk_block_cnt <<= raid_map->phys_blk_shift;
2530 }
2531
2532 if (unlikely(disk_block_cnt > 0xffff))
2533 return PQI_RAID_BYPASS_INELIGIBLE;
2534
2535 /* Build the new CDB for the physical disk I/O. */
2536 if (disk_block > 0xffffffff) {
2537 cdb[0] = is_write ? WRITE_16 : READ_16;
2538 cdb[1] = 0;
2539 put_unaligned_be64(disk_block, &cdb[2]);
2540 put_unaligned_be32(disk_block_cnt, &cdb[10]);
2541 cdb[14] = 0;
2542 cdb[15] = 0;
2543 cdb_length = 16;
2544 } else {
2545 cdb[0] = is_write ? WRITE_10 : READ_10;
2546 cdb[1] = 0;
2547 put_unaligned_be32((u32)disk_block, &cdb[2]);
2548 cdb[6] = 0;
2549 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]);
2550 cdb[9] = 0;
2551 cdb_length = 10;
2552 }
2553
2554 if (get_unaligned_le16(&raid_map->flags) &
2555 RAID_MAP_ENCRYPTION_ENABLED) {
2556 pqi_set_encryption_info(&encryption_info, raid_map,
2557 first_block);
2558 encryption_info_ptr = &encryption_info;
2559 } else {
2560 encryption_info_ptr = NULL;
2561 }
2562
2563 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
376fb880 2564 cdb, cdb_length, queue_group, encryption_info_ptr, true);
6c223761
KB		 2565}
2566
2567#define PQI_STATUS_IDLE 0x0
2568
2569#define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2570#define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2571
2572#define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2573#define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2574#define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2575#define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2576#define PQI_DEVICE_STATE_ERROR 0x4
2577
2578#define PQI_MODE_READY_TIMEOUT_SECS 30
2579#define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2580
2581static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2582{
2583 struct pqi_device_registers __iomem *pqi_registers;
2584 unsigned long timeout;
2585 u64 signature;
2586 u8 status;
2587
2588 pqi_registers = ctrl_info->pqi_registers;
4fd22c13 2589 timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761
KB		 2590
2591 while (1) {
2592 signature = readq(&pqi_registers->signature);
2593 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2594 sizeof(signature)) == 0)
2595 break;
2596 if (time_after(jiffies, timeout)) {
2597 dev_err(&ctrl_info->pci_dev->dev,
2598 "timed out waiting for PQI signature\n");
2599 return -ETIMEDOUT;
2600 }
2601 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2602 }
2603
2604 while (1) {
2605 status = readb(&pqi_registers->function_and_status_code);
2606 if (status == PQI_STATUS_IDLE)
2607 break;
2608 if (time_after(jiffies, timeout)) {
2609 dev_err(&ctrl_info->pci_dev->dev,
2610 "timed out waiting for PQI IDLE\n");
2611 return -ETIMEDOUT;
2612 }
2613 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2614 }
2615
2616 while (1) {
2617 if (readl(&pqi_registers->device_status) ==
2618 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2619 break;
2620 if (time_after(jiffies, timeout)) {
2621 dev_err(&ctrl_info->pci_dev->dev,
2622 "timed out waiting for PQI all registers ready\n");
2623 return -ETIMEDOUT;
2624 }
2625 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2626 }
2627
2628 return 0;
2629}
2630
2631static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2632{
2633 struct pqi_scsi_dev *device;
2634
2635 device = io_request->scmd->device->hostdata;
588a63fe 2636 device->raid_bypass_enabled = false;
376fb880 2637 device->aio_enabled = false;
6c223761
KB		 2638}
2639
d87d5474 2640static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
6c223761
KB		 2641{
2642 struct pqi_ctrl_info *ctrl_info;
e58081a7 2643 struct pqi_scsi_dev *device;
6c223761 2644
03b288cf
KB		 2645 device = sdev->hostdata;
2646 if (device->device_offline)
2647 return;
2648
2649 device->device_offline = true;
03b288cf
KB		 2650 ctrl_info = shost_to_hba(sdev->host);
2651 pqi_schedule_rescan_worker(ctrl_info);
a9a68101 2652 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n",
03b288cf
KB		 2653 path, ctrl_info->scsi_host->host_no, device->bus,
2654 device->target, device->lun);
6c223761
KB		 2655}
2656
2657static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2658{
2659 u8 scsi_status;
2660 u8 host_byte;
2661 struct scsi_cmnd *scmd;
2662 struct pqi_raid_error_info *error_info;
2663 size_t sense_data_length;
2664 int residual_count;
2665 int xfer_count;
2666 struct scsi_sense_hdr sshdr;
2667
2668 scmd = io_request->scmd;
2669 if (!scmd)
2670 return;
2671
2672 error_info = io_request->error_info;
2673 scsi_status = error_info->status;
2674 host_byte = DID_OK;
2675
f5b63206
KB		 2676 switch (error_info->data_out_result) {
2677 case PQI_DATA_IN_OUT_GOOD:
2678 break;
2679 case PQI_DATA_IN_OUT_UNDERFLOW:
6c223761
KB		 2680 xfer_count =
2681 get_unaligned_le32(&error_info->data_out_transferred);
2682 residual_count = scsi_bufflen(scmd) - xfer_count;
2683 scsi_set_resid(scmd, residual_count);
2684 if (xfer_count < scmd->underflow)
2685 host_byte = DID_SOFT_ERROR;
f5b63206
KB		 2686 break;
2687 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
2688 case PQI_DATA_IN_OUT_ABORTED:
2689 host_byte = DID_ABORT;
2690 break;
2691 case PQI_DATA_IN_OUT_TIMEOUT:
2692 host_byte = DID_TIME_OUT;
2693 break;
2694 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
2695 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
2696 case PQI_DATA_IN_OUT_BUFFER_ERROR:
2697 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
2698 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
2699 case PQI_DATA_IN_OUT_ERROR:
2700 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
2701 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
2702 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
2703 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
2704 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
2705 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
2706 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
2707 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
2708 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
2709 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
2710 default:
2711 host_byte = DID_ERROR;
2712 break;
6c223761
KB		 2713 }
2714
2715 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2716 if (sense_data_length == 0)
2717 sense_data_length =
2718 get_unaligned_le16(&error_info->response_data_length);
2719 if (sense_data_length) {
2720 if (sense_data_length > sizeof(error_info->data))
2721 sense_data_length = sizeof(error_info->data);
2722
2723 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2724 scsi_normalize_sense(error_info->data,
2725 sense_data_length, &sshdr) &&
2726 sshdr.sense_key == HARDWARE_ERROR &&
8ef860ae 2727 sshdr.asc == 0x3e) {
441b7195
EV		 2728 struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host);
2729 struct pqi_scsi_dev *device = scmd->device->hostdata;
2730
8ef860ae
EV		 2731 switch (sshdr.ascq) {
2732 case 0x1: /* LOGICAL UNIT FAILURE */
2733 if (printk_ratelimit())
2734 scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n",
2735 ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
2736 pqi_take_device_offline(scmd->device, "RAID");
2737 host_byte = DID_NO_CONNECT;
2738 break;
2739
2740 default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */
2741 if (printk_ratelimit())
2742 scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n",
2743 sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
2744 break;
2745 }
6c223761
KB		 2746 }
2747
2748 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2749 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2750 memcpy(scmd->sense_buffer, error_info->data,
2751 sense_data_length);
2752 }
2753
2754 scmd->result = scsi_status;
2755 set_host_byte(scmd, host_byte);
2756}
2757
2758static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2759{
2760 u8 scsi_status;
2761 u8 host_byte;
2762 struct scsi_cmnd *scmd;
2763 struct pqi_aio_error_info *error_info;
2764 size_t sense_data_length;
2765 int residual_count;
2766 int xfer_count;
2767 bool device_offline;
2768
2769 scmd = io_request->scmd;
2770 error_info = io_request->error_info;
2771 host_byte = DID_OK;
2772 sense_data_length = 0;
2773 device_offline = false;
2774
2775 switch (error_info->service_response) {
2776 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2777 scsi_status = error_info->status;
2778 break;
2779 case PQI_AIO_SERV_RESPONSE_FAILURE:
2780 switch (error_info->status) {
2781 case PQI_AIO_STATUS_IO_ABORTED:
2782 scsi_status = SAM_STAT_TASK_ABORTED;
2783 break;
2784 case PQI_AIO_STATUS_UNDERRUN:
2785 scsi_status = SAM_STAT_GOOD;
2786 residual_count = get_unaligned_le32(
2787 &error_info->residual_count);
2788 scsi_set_resid(scmd, residual_count);
2789 xfer_count = scsi_bufflen(scmd) - residual_count;
2790 if (xfer_count < scmd->underflow)
2791 host_byte = DID_SOFT_ERROR;
2792 break;
2793 case PQI_AIO_STATUS_OVERRUN:
2794 scsi_status = SAM_STAT_GOOD;
2795 break;
2796 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2797 pqi_aio_path_disabled(io_request);
2798 scsi_status = SAM_STAT_GOOD;
2799 io_request->status = -EAGAIN;
2800 break;
2801 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
2802 case PQI_AIO_STATUS_INVALID_DEVICE:
376fb880
KB		 2803 if (!io_request->raid_bypass) {
2804 device_offline = true;
2805 pqi_take_device_offline(scmd->device, "AIO");
2806 host_byte = DID_NO_CONNECT;
2807 }
6c223761
KB		 2808 scsi_status = SAM_STAT_CHECK_CONDITION;
2809 break;
2810 case PQI_AIO_STATUS_IO_ERROR:
2811 default:
2812 scsi_status = SAM_STAT_CHECK_CONDITION;
2813 break;
2814 }
2815 break;
2816 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
2817 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
2818 scsi_status = SAM_STAT_GOOD;
2819 break;
2820 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
2821 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
2822 default:
2823 scsi_status = SAM_STAT_CHECK_CONDITION;
2824 break;
2825 }
2826
2827 if (error_info->data_present) {
2828 sense_data_length =
2829 get_unaligned_le16(&error_info->data_length);
2830 if (sense_data_length) {
2831 if (sense_data_length > sizeof(error_info->data))
2832 sense_data_length = sizeof(error_info->data);
2833 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2834 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2835 memcpy(scmd->sense_buffer, error_info->data,
2836 sense_data_length);
2837 }
2838 }
2839
2840 if (device_offline && sense_data_length == 0)
2841 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
2842 0x3e, 0x1);
2843
2844 scmd->result = scsi_status;
2845 set_host_byte(scmd, host_byte);
2846}
2847
2848static void pqi_process_io_error(unsigned int iu_type,
2849 struct pqi_io_request *io_request)
2850{
2851 switch (iu_type) {
2852 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2853 pqi_process_raid_io_error(io_request);
2854 break;
2855 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2856 pqi_process_aio_io_error(io_request);
2857 break;
2858 }
2859}
2860
2861static int pqi_interpret_task_management_response(
2862 struct pqi_task_management_response *response)
2863{
2864 int rc;
2865
2866 switch (response->response_code) {
b17f0486
KB		 2867 case SOP_TMF_COMPLETE:
2868 case SOP_TMF_FUNCTION_SUCCEEDED:
6c223761
KB		 2869 rc = 0;
2870 break;
3406384b
MR		 2871 case SOP_TMF_REJECTED:
2872 rc = -EAGAIN;
2873 break;
6c223761
KB		 2874 default:
2875 rc = -EIO;
2876 break;
2877 }
2878
2879 return rc;
2880}
2881
9e68cccc 2882static inline void pqi_invalid_response(struct pqi_ctrl_info *ctrl_info)
6c223761 2883{
9e68cccc
KB		 2884 pqi_take_ctrl_offline(ctrl_info);
2885}
2886
2887static int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info, struct pqi_queue_group *queue_group)
6c223761 2888{
9e68cccc 2889 int num_responses;
6c223761
KB		 2890 pqi_index_t oq_pi;
2891 pqi_index_t oq_ci;
2892 struct pqi_io_request *io_request;
2893 struct pqi_io_response *response;
2894 u16 request_id;
2895
2896 num_responses = 0;
2897 oq_ci = queue_group->oq_ci_copy;
2898
2899 while (1) {
dac12fbc 2900 oq_pi = readl(queue_group->oq_pi);
9e68cccc
KB		 2901 if (oq_pi >= ctrl_info->num_elements_per_oq) {
2902 pqi_invalid_response(ctrl_info);
2903 dev_err(&ctrl_info->pci_dev->dev,
2904 "I/O interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n",
2905 oq_pi, ctrl_info->num_elements_per_oq - 1, oq_ci);
2906 return -1;
2907 }
6c223761
KB		 2908 if (oq_pi == oq_ci)
2909 break;
2910
2911 num_responses++;
2912 response = queue_group->oq_element_array +
2913 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
2914
2915 request_id = get_unaligned_le16(&response->request_id);
9e68cccc
KB		 2916 if (request_id >= ctrl_info->max_io_slots) {
2917 pqi_invalid_response(ctrl_info);
2918 dev_err(&ctrl_info->pci_dev->dev,
2919 "request ID in response (%u) out of range (0-%u): producer index: %u consumer index: %u\n",
2920 request_id, ctrl_info->max_io_slots - 1, oq_pi, oq_ci);
2921 return -1;
2922 }
6c223761
KB		 2923
2924 io_request = &ctrl_info->io_request_pool[request_id];
9e68cccc
KB		 2925 if (atomic_read(&io_request->refcount) == 0) {
2926 pqi_invalid_response(ctrl_info);
2927 dev_err(&ctrl_info->pci_dev->dev,
2928 "request ID in response (%u) does not match an outstanding I/O request: producer index: %u consumer index: %u\n",
2929 request_id, oq_pi, oq_ci);
2930 return -1;
2931 }
6c223761
KB		 2932
2933 switch (response->header.iu_type) {
2934 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
2935 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2ba55c98
KB		 2936 if (io_request->scmd)
2937 io_request->scmd->result = 0;
df561f66 2938 fallthrough;
6c223761
KB		 2939 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
2940 break;
b212c251
KB		 2941 case PQI_RESPONSE_IU_VENDOR_GENERAL:
2942 io_request->status =
2943 get_unaligned_le16(
2944 &((struct pqi_vendor_general_response *)
2945 response)->status);
2946 break;
6c223761
KB		 2947 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
2948 io_request->status =
2949 pqi_interpret_task_management_response(
2950 (void *)response);
2951 break;
2952 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
2953 pqi_aio_path_disabled(io_request);
2954 io_request->status = -EAGAIN;
2955 break;
2956 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2957 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2958 io_request->error_info = ctrl_info->error_buffer +
2959 (get_unaligned_le16(&response->error_index) *
2960 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
9e68cccc 2961 pqi_process_io_error(response->header.iu_type, io_request);
6c223761
KB		 2962 break;
2963 default:
9e68cccc 2964 pqi_invalid_response(ctrl_info);
6c223761 2965 dev_err(&ctrl_info->pci_dev->dev,
9e68cccc
KB		 2966 "unexpected IU type: 0x%x: producer index: %u consumer index: %u\n",
2967 response->header.iu_type, oq_pi, oq_ci);
2968 return -1;
6c223761
KB		 2969 }
2970
9e68cccc 2971 io_request->io_complete_callback(io_request, io_request->context);
6c223761
KB		 2972
2973 /*
2974 * Note that the I/O request structure CANNOT BE TOUCHED after
2975 * returning from the I/O completion callback!
2976 */
6c223761
KB		 2977 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
2978 }
2979
2980 if (num_responses) {
2981 queue_group->oq_ci_copy = oq_ci;
2982 writel(oq_ci, queue_group->oq_ci);
2983 }
2984
2985 return num_responses;
2986}
2987
2988static inline unsigned int pqi_num_elements_free(unsigned int pi,
df7a1fcf 2989 unsigned int ci, unsigned int elements_in_queue)
6c223761
KB		 2990{
2991 unsigned int num_elements_used;
2992
2993 if (pi >= ci)
2994 num_elements_used = pi - ci;
2995 else
2996 num_elements_used = elements_in_queue - ci + pi;
2997
2998 return elements_in_queue - num_elements_used - 1;
2999}
3000
98f87667 3001static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 3002 struct pqi_event_acknowledge_request *iu, size_t iu_length)
3003{
3004 pqi_index_t iq_pi;
3005 pqi_index_t iq_ci;
3006 unsigned long flags;
3007 void *next_element;
6c223761
KB		 3008 struct pqi_queue_group *queue_group;
3009
3010 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
3011 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
3012
6c223761
KB		 3013 while (1) {
3014 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
3015
3016 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
dac12fbc 3017 iq_ci = readl(queue_group->iq_ci[RAID_PATH]);
6c223761
KB		 3018
3019 if (pqi_num_elements_free(iq_pi, iq_ci,
3020 ctrl_info->num_elements_per_iq))
3021 break;
3022
3023 spin_unlock_irqrestore(
3024 &queue_group->submit_lock[RAID_PATH], flags);
3025
98f87667 3026 if (pqi_ctrl_offline(ctrl_info))
6c223761 3027 return;
6c223761
KB		 3028 }
3029
3030 next_element = queue_group->iq_element_array[RAID_PATH] +
3031 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3032
3033 memcpy(next_element, iu, iu_length);
3034
3035 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
6c223761
KB		 3036 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
3037
3038 /*
3039 * This write notifies the controller that an IU is available to be
3040 * processed.
3041 */
3042 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
3043
3044 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
6c223761
KB		 3045}
3046
3047static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
3048 struct pqi_event *event)
3049{
3050 struct pqi_event_acknowledge_request request;
3051
3052 memset(&request, 0, sizeof(request));
3053
3054 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
3055 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
3056 &request.header.iu_length);
3057 request.event_type = event->event_type;
3058 request.event_id = event->event_id;
3059 request.additional_event_id = event->additional_event_id;
3060
98f87667 3061 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
6c223761
KB		 3062}
3063
4fd22c13
MR		 3064#define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30
3065#define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1
3066
3067static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status(
3068 struct pqi_ctrl_info *ctrl_info)
6c223761 3069{
4fd22c13
MR		 3070 unsigned long timeout;
3071 u8 status;
6c223761 3072
4fd22c13 3073 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761 3074
4fd22c13
MR		 3075 while (1) {
3076 status = pqi_read_soft_reset_status(ctrl_info);
3077 if (status & PQI_SOFT_RESET_INITIATE)
3078 return RESET_INITIATE_DRIVER;
3079
3080 if (status & PQI_SOFT_RESET_ABORT)
3081 return RESET_ABORT;
3082
3083 if (time_after(jiffies, timeout)) {
3084 dev_err(&ctrl_info->pci_dev->dev,
3085 "timed out waiting for soft reset status\n");
3086 return RESET_TIMEDOUT;
3087 }
3088
3089 if (!sis_is_firmware_running(ctrl_info))
3090 return RESET_NORESPONSE;
3091
3092 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS);
3093 }
3094}
3095
3096static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info,
694c5d5b 3097 enum pqi_soft_reset_status reset_status)
4fd22c13
MR		 3098{
3099 int rc;
3100
3101 switch (reset_status) {
3102 case RESET_INITIATE_DRIVER:
4fd22c13
MR		 3103 case RESET_TIMEDOUT:
3104 dev_info(&ctrl_info->pci_dev->dev,
3105 "resetting controller %u\n", ctrl_info->ctrl_id);
3106 sis_soft_reset(ctrl_info);
df561f66 3107 fallthrough;
4fd22c13
MR		 3108 case RESET_INITIATE_FIRMWARE:
3109 rc = pqi_ofa_ctrl_restart(ctrl_info);
3110 pqi_ofa_free_host_buffer(ctrl_info);
3111 dev_info(&ctrl_info->pci_dev->dev,
3112 "Online Firmware Activation for controller %u: %s\n",
3113 ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED");
3114 break;
3115 case RESET_ABORT:
3116 pqi_ofa_ctrl_unquiesce(ctrl_info);
3117 dev_info(&ctrl_info->pci_dev->dev,
3118 "Online Firmware Activation for controller %u: %s\n",
3119 ctrl_info->ctrl_id, "ABORTED");
3120 break;
3121 case RESET_NORESPONSE:
3122 pqi_ofa_free_host_buffer(ctrl_info);
3123 pqi_take_ctrl_offline(ctrl_info);
3124 break;
3125 }
3126}
3127
3128static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info,
3129 struct pqi_event *event)
3130{
3131 u16 event_id;
3132 enum pqi_soft_reset_status status;
3133
3134 event_id = get_unaligned_le16(&event->event_id);
3135
3136 mutex_lock(&ctrl_info->ofa_mutex);
3137
3138 if (event_id == PQI_EVENT_OFA_QUIESCE) {
3139 dev_info(&ctrl_info->pci_dev->dev,
694c5d5b
KB		 3140 "Received Online Firmware Activation quiesce event for controller %u\n",
3141 ctrl_info->ctrl_id);
4fd22c13
MR		 3142 pqi_ofa_ctrl_quiesce(ctrl_info);
3143 pqi_acknowledge_event(ctrl_info, event);
3144 if (ctrl_info->soft_reset_handshake_supported) {
3145 status = pqi_poll_for_soft_reset_status(ctrl_info);
3146 pqi_process_soft_reset(ctrl_info, status);
3147 } else {
3148 pqi_process_soft_reset(ctrl_info,
3149 RESET_INITIATE_FIRMWARE);
3150 }
3151
3152 } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3153 pqi_acknowledge_event(ctrl_info, event);
3154 pqi_ofa_setup_host_buffer(ctrl_info,
3155 le32_to_cpu(event->ofa_bytes_requested));
3156 pqi_ofa_host_memory_update(ctrl_info);
3157 } else if (event_id == PQI_EVENT_OFA_CANCELLED) {
3158 pqi_ofa_free_host_buffer(ctrl_info);
3159 pqi_acknowledge_event(ctrl_info, event);
3160 dev_info(&ctrl_info->pci_dev->dev,
694c5d5b
KB		 3161 "Online Firmware Activation(%u) cancel reason : %u\n",
3162 ctrl_info->ctrl_id, event->ofa_cancel_reason);
4fd22c13
MR		 3163 }
3164
3165 mutex_unlock(&ctrl_info->ofa_mutex);
3166}
3167
6c223761
KB		 3168static void pqi_event_worker(struct work_struct *work)
3169{
3170 unsigned int i;
3171 struct pqi_ctrl_info *ctrl_info;
6a50d6ad 3172 struct pqi_event *event;
6c223761
KB		 3173
3174 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
3175
7561a7e4
KB		 3176 pqi_ctrl_busy(ctrl_info);
3177 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
5f310425
KB		 3178 if (pqi_ctrl_offline(ctrl_info))
3179 goto out;
3180
3181 pqi_schedule_rescan_worker_delayed(ctrl_info);
7561a7e4 3182
6a50d6ad 3183 event = ctrl_info->events;
6c223761 3184 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
6a50d6ad
KB		 3185 if (event->pending) {
3186 event->pending = false;
4fd22c13
MR		 3187 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3188 pqi_ctrl_unbusy(ctrl_info);
3189 pqi_ofa_process_event(ctrl_info, event);
3190 return;
3191 }
6a50d6ad 3192 pqi_acknowledge_event(ctrl_info, event);
6c223761 3193 }
6a50d6ad 3194 event++;
6c223761
KB		 3195 }
3196
5f310425 3197out:
7561a7e4 3198 pqi_ctrl_unbusy(ctrl_info);
6c223761
KB		 3199}
3200
4fd22c13 3201#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ)
6c223761 3202
74a0f573 3203static void pqi_heartbeat_timer_handler(struct timer_list *t)
6c223761
KB		 3204{
3205 int num_interrupts;
98f87667 3206 u32 heartbeat_count;
74a0f573
KC		 3207 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t,
3208 heartbeat_timer);
6c223761 3209
98f87667
KB		 3210 pqi_check_ctrl_health(ctrl_info);
3211 if (pqi_ctrl_offline(ctrl_info))
061ef06a
KB		 3212 return;
3213
6c223761 3214 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
98f87667 3215 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
6c223761
KB		 3216
3217 if (num_interrupts == ctrl_info->previous_num_interrupts) {
98f87667
KB		 3218 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
3219 dev_err(&ctrl_info->pci_dev->dev,
3220 "no heartbeat detected - last heartbeat count: %u\n",
3221 heartbeat_count);
6c223761
KB		 3222 pqi_take_ctrl_offline(ctrl_info);
3223 return;
3224 }
6c223761 3225 } else {
98f87667 3226 ctrl_info->previous_num_interrupts = num_interrupts;
6c223761
KB		 3227 }
3228
98f87667 3229 ctrl_info->previous_heartbeat_count = heartbeat_count;
6c223761
KB		 3230 mod_timer(&ctrl_info->heartbeat_timer,
3231 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
3232}
3233
3234static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3235{
98f87667
KB		 3236 if (!ctrl_info->heartbeat_counter)
3237 return;
3238
6c223761
KB		 3239 ctrl_info->previous_num_interrupts =
3240 atomic_read(&ctrl_info->num_interrupts);
98f87667
KB		 3241 ctrl_info->previous_heartbeat_count =
3242 pqi_read_heartbeat_counter(ctrl_info);
6c223761 3243
6c223761
KB		 3244 ctrl_info->heartbeat_timer.expires =
3245 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
061ef06a 3246 add_timer(&ctrl_info->heartbeat_timer);
6c223761
KB		 3247}
3248
3249static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3250{
98f87667 3251 del_timer_sync(&ctrl_info->heartbeat_timer);
6c223761
KB		 3252}
3253
6a50d6ad 3254static inline int pqi_event_type_to_event_index(unsigned int event_type)
6c223761
KB		 3255{
3256 int index;
3257
6a50d6ad
KB		 3258 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
3259 if (event_type == pqi_supported_event_types[index])
3260 return index;
6c223761 3261
6a50d6ad
KB		 3262 return -1;
3263}
3264
3265static inline bool pqi_is_supported_event(unsigned int event_type)
3266{
3267 return pqi_event_type_to_event_index(event_type) != -1;
6c223761
KB		 3268}
3269
4fd22c13
MR		 3270static void pqi_ofa_capture_event_payload(struct pqi_event *event,
3271 struct pqi_event_response *response)
3272{
3273 u16 event_id;
3274
3275 event_id = get_unaligned_le16(&event->event_id);
3276
3277 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3278 if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3279 event->ofa_bytes_requested =
3280 response->data.ofa_memory_allocation.bytes_requested;
3281 } else if (event_id == PQI_EVENT_OFA_CANCELLED) {
3282 event->ofa_cancel_reason =
3283 response->data.ofa_cancelled.reason;
3284 }
3285 }
3286}
3287
9e68cccc 3288static int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
6c223761 3289{
9e68cccc 3290 int num_events;
6c223761
KB		 3291 pqi_index_t oq_pi;
3292 pqi_index_t oq_ci;
3293 struct pqi_event_queue *event_queue;
3294 struct pqi_event_response *response;
6a50d6ad 3295 struct pqi_event *event;
6c223761
KB		 3296 int event_index;
3297
3298 event_queue = &ctrl_info->event_queue;
3299 num_events = 0;
6c223761
KB		 3300 oq_ci = event_queue->oq_ci_copy;
3301
3302 while (1) {
dac12fbc 3303 oq_pi = readl(event_queue->oq_pi);
9e68cccc
KB		 3304 if (oq_pi >= PQI_NUM_EVENT_QUEUE_ELEMENTS) {
3305 pqi_invalid_response(ctrl_info);
3306 dev_err(&ctrl_info->pci_dev->dev,
3307 "event interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n",
3308 oq_pi, PQI_NUM_EVENT_QUEUE_ELEMENTS - 1, oq_ci);
3309 return -1;
3310 }
3311
6c223761
KB		 3312 if (oq_pi == oq_ci)
3313 break;
3314
3315 num_events++;
9e68cccc 3316 response = event_queue->oq_element_array + (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
6c223761
KB		 3317
3318 event_index =
3319 pqi_event_type_to_event_index(response->event_type);
3320
9e68cccc
KB		 3321 if (event_index >= 0 && response->request_acknowledge) {
3322 event = &ctrl_info->events[event_index];
3323 event->pending = true;
3324 event->event_type = response->event_type;
3325 event->event_id = response->event_id;
3326 event->additional_event_id = response->additional_event_id;
3327 if (event->event_type == PQI_EVENT_TYPE_OFA)
4fd22c13 3328 pqi_ofa_capture_event_payload(event, response);
6c223761
KB		 3329 }
3330
3331 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
3332 }
3333
3334 if (num_events) {
3335 event_queue->oq_ci_copy = oq_ci;
3336 writel(oq_ci, event_queue->oq_ci);
98f87667 3337 schedule_work(&ctrl_info->event_work);
6c223761
KB		 3338 }
3339
3340 return num_events;
3341}
3342
061ef06a
KB		 3343#define PQI_LEGACY_INTX_MASK 0x1
3344
3345static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info,
694c5d5b 3346 bool enable_intx)
061ef06a
KB		 3347{
3348 u32 intx_mask;
3349 struct pqi_device_registers __iomem *pqi_registers;
3350 volatile void __iomem *register_addr;
3351
3352 pqi_registers = ctrl_info->pqi_registers;
3353
3354 if (enable_intx)
3355 register_addr = &pqi_registers->legacy_intx_mask_clear;
3356 else
3357 register_addr = &pqi_registers->legacy_intx_mask_set;
3358
3359 intx_mask = readl(register_addr);
3360 intx_mask |= PQI_LEGACY_INTX_MASK;
3361 writel(intx_mask, register_addr);
3362}
3363
3364static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3365 enum pqi_irq_mode new_mode)
3366{
3367 switch (ctrl_info->irq_mode) {
3368 case IRQ_MODE_MSIX:
3369 switch (new_mode) {
3370 case IRQ_MODE_MSIX:
3371 break;
3372 case IRQ_MODE_INTX:
3373 pqi_configure_legacy_intx(ctrl_info, true);
061ef06a
KB		 3374 sis_enable_intx(ctrl_info);
3375 break;
3376 case IRQ_MODE_NONE:
061ef06a
KB		 3377 break;
3378 }
3379 break;
3380 case IRQ_MODE_INTX:
3381 switch (new_mode) {
3382 case IRQ_MODE_MSIX:
3383 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3384 sis_enable_msix(ctrl_info);
3385 break;
3386 case IRQ_MODE_INTX:
3387 break;
3388 case IRQ_MODE_NONE:
3389 pqi_configure_legacy_intx(ctrl_info, false);
061ef06a
KB		 3390 break;
3391 }
3392 break;
3393 case IRQ_MODE_NONE:
3394 switch (new_mode) {
3395 case IRQ_MODE_MSIX:
3396 sis_enable_msix(ctrl_info);
3397 break;
3398 case IRQ_MODE_INTX:
3399 pqi_configure_legacy_intx(ctrl_info, true);
3400 sis_enable_intx(ctrl_info);
3401 break;
3402 case IRQ_MODE_NONE:
3403 break;
3404 }
3405 break;
3406 }
3407
3408 ctrl_info->irq_mode = new_mode;
3409}
3410
3411#define PQI_LEGACY_INTX_PENDING 0x1
3412
3413static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3414{
3415 bool valid_irq;
3416 u32 intx_status;
3417
3418 switch (ctrl_info->irq_mode) {
3419 case IRQ_MODE_MSIX:
3420 valid_irq = true;
3421 break;
3422 case IRQ_MODE_INTX:
3423 intx_status =
3424 readl(&ctrl_info->pqi_registers->legacy_intx_status);
3425 if (intx_status & PQI_LEGACY_INTX_PENDING)
3426 valid_irq = true;
3427 else
3428 valid_irq = false;
3429 break;
3430 case IRQ_MODE_NONE:
3431 default:
3432 valid_irq = false;
3433 break;
3434 }
3435
3436 return valid_irq;
3437}
3438
6c223761
KB		 3439static irqreturn_t pqi_irq_handler(int irq, void *data)
3440{
3441 struct pqi_ctrl_info *ctrl_info;
3442 struct pqi_queue_group *queue_group;
9e68cccc
KB		 3443 int num_io_responses_handled;
3444 int num_events_handled;
6c223761
KB		 3445
3446 queue_group = data;
3447 ctrl_info = queue_group->ctrl_info;
3448
061ef06a 3449 if (!pqi_is_valid_irq(ctrl_info))
6c223761
KB		 3450 return IRQ_NONE;
3451
9e68cccc
KB		 3452 num_io_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3453 if (num_io_responses_handled < 0)
3454 goto out;
6c223761 3455
9e68cccc
KB		 3456 if (irq == ctrl_info->event_irq) {
3457 num_events_handled = pqi_process_event_intr(ctrl_info);
3458 if (num_events_handled < 0)
3459 goto out;
3460 } else {
3461 num_events_handled = 0;
3462 }
6c223761 3463
9e68cccc 3464 if (num_io_responses_handled + num_events_handled > 0)
6c223761
KB		 3465 atomic_inc(&ctrl_info->num_interrupts);
3466
3467 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3468 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3469
9e68cccc 3470out:
6c223761
KB		 3471 return IRQ_HANDLED;
3472}
3473
3474static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3475{
d91d7820 3476 struct pci_dev *pci_dev = ctrl_info->pci_dev;
6c223761
KB		 3477 int i;
3478 int rc;
3479
d91d7820 3480 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
6c223761
KB		 3481
3482 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
d91d7820 3483 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
52198226 3484 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
6c223761 3485 if (rc) {
d91d7820 3486 dev_err(&pci_dev->dev,
6c223761 3487 "irq %u init failed with error %d\n",
d91d7820 3488 pci_irq_vector(pci_dev, i), rc);
6c223761
KB		 3489 return rc;
3490 }
3491 ctrl_info->num_msix_vectors_initialized++;
3492 }
3493
3494 return 0;
3495}
3496
98bf061b
KB		 3497static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3498{
3499 int i;
3500
3501 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3502 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3503 &ctrl_info->queue_groups[i]);
3504
3505 ctrl_info->num_msix_vectors_initialized = 0;
3506}
3507
6c223761
KB		 3508static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3509{
98bf061b 3510 int num_vectors_enabled;
6c223761 3511
98bf061b 3512 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
52198226
CH		 3513 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3514 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
98bf061b 3515 if (num_vectors_enabled < 0) {
6c223761 3516 dev_err(&ctrl_info->pci_dev->dev,
98bf061b
KB		 3517 "MSI-X init failed with error %d\n",
3518 num_vectors_enabled);
3519 return num_vectors_enabled;
6c223761
KB		 3520 }
3521
98bf061b 3522 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
061ef06a 3523 ctrl_info->irq_mode = IRQ_MODE_MSIX;
6c223761
KB		 3524 return 0;
3525}
3526
98bf061b
KB		 3527static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3528{
3529 if (ctrl_info->num_msix_vectors_enabled) {
3530 pci_free_irq_vectors(ctrl_info->pci_dev);
3531 ctrl_info->num_msix_vectors_enabled = 0;
3532 }
3533}
3534
6c223761
KB		 3535static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3536{
3537 unsigned int i;
3538 size_t alloc_length;
3539 size_t element_array_length_per_iq;
3540 size_t element_array_length_per_oq;
3541 void *element_array;
dac12fbc 3542 void __iomem *next_queue_index;
6c223761
KB		 3543 void *aligned_pointer;
3544 unsigned int num_inbound_queues;
3545 unsigned int num_outbound_queues;
3546 unsigned int num_queue_indexes;
3547 struct pqi_queue_group *queue_group;
3548
3549 element_array_length_per_iq =
3550 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3551 ctrl_info->num_elements_per_iq;
3552 element_array_length_per_oq =
3553 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3554 ctrl_info->num_elements_per_oq;
3555 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3556 num_outbound_queues = ctrl_info->num_queue_groups;
3557 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3558
3559 aligned_pointer = NULL;
3560
3561 for (i = 0; i < num_inbound_queues; i++) {
3562 aligned_pointer = PTR_ALIGN(aligned_pointer,
3563 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3564 aligned_pointer += element_array_length_per_iq;
3565 }
3566
3567 for (i = 0; i < num_outbound_queues; i++) {
3568 aligned_pointer = PTR_ALIGN(aligned_pointer,
3569 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3570 aligned_pointer += element_array_length_per_oq;
3571 }
3572
3573 aligned_pointer = PTR_ALIGN(aligned_pointer,
3574 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3575 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3576 PQI_EVENT_OQ_ELEMENT_LENGTH;
3577
3578 for (i = 0; i < num_queue_indexes; i++) {
3579 aligned_pointer = PTR_ALIGN(aligned_pointer,
3580 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3581 aligned_pointer += sizeof(pqi_index_t);
3582 }
3583
3584 alloc_length = (size_t)aligned_pointer +
3585 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3586
e1d213bd
KB		 3587 alloc_length += PQI_EXTRA_SGL_MEMORY;
3588
6c223761 3589 ctrl_info->queue_memory_base =
750afb08
LC		 3590 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
3591 &ctrl_info->queue_memory_base_dma_handle,
3592 GFP_KERNEL);
6c223761 3593
d87d5474 3594 if (!ctrl_info->queue_memory_base)
6c223761 3595 return -ENOMEM;
6c223761
KB		 3596
3597 ctrl_info->queue_memory_length = alloc_length;
3598
3599 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3600 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3601
3602 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3603 queue_group = &ctrl_info->queue_groups[i];
3604 queue_group->iq_element_array[RAID_PATH] = element_array;
3605 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3606 ctrl_info->queue_memory_base_dma_handle +
3607 (element_array - ctrl_info->queue_memory_base);
3608 element_array += element_array_length_per_iq;
3609 element_array = PTR_ALIGN(element_array,
3610 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3611 queue_group->iq_element_array[AIO_PATH] = element_array;
3612 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3613 ctrl_info->queue_memory_base_dma_handle +
3614 (element_array - ctrl_info->queue_memory_base);
3615 element_array += element_array_length_per_iq;
3616 element_array = PTR_ALIGN(element_array,
3617 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3618 }
3619
3620 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3621 queue_group = &ctrl_info->queue_groups[i];
3622 queue_group->oq_element_array = element_array;
3623 queue_group->oq_element_array_bus_addr =
3624 ctrl_info->queue_memory_base_dma_handle +
3625 (element_array - ctrl_info->queue_memory_base);
3626 element_array += element_array_length_per_oq;
3627 element_array = PTR_ALIGN(element_array,
3628 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3629 }
3630
3631 ctrl_info->event_queue.oq_element_array = element_array;
3632 ctrl_info->event_queue.oq_element_array_bus_addr =
3633 ctrl_info->queue_memory_base_dma_handle +
3634 (element_array - ctrl_info->queue_memory_base);
3635 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3636 PQI_EVENT_OQ_ELEMENT_LENGTH;
3637
dac12fbc 3638 next_queue_index = (void __iomem *)PTR_ALIGN(element_array,
6c223761
KB		 3639 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3640
3641 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3642 queue_group = &ctrl_info->queue_groups[i];
3643 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3644 queue_group->iq_ci_bus_addr[RAID_PATH] =
3645 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3646 (next_queue_index -
3647 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3648 next_queue_index += sizeof(pqi_index_t);
3649 next_queue_index = PTR_ALIGN(next_queue_index,
3650 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3651 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3652 queue_group->iq_ci_bus_addr[AIO_PATH] =
3653 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3654 (next_queue_index -
3655 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3656 next_queue_index += sizeof(pqi_index_t);
3657 next_queue_index = PTR_ALIGN(next_queue_index,
3658 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3659 queue_group->oq_pi = next_queue_index;
3660 queue_group->oq_pi_bus_addr =
3661 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3662 (next_queue_index -
3663 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3664 next_queue_index += sizeof(pqi_index_t);
3665 next_queue_index = PTR_ALIGN(next_queue_index,
3666 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3667 }
3668
3669 ctrl_info->event_queue.oq_pi = next_queue_index;
3670 ctrl_info->event_queue.oq_pi_bus_addr =
3671 ctrl_info->queue_memory_base_dma_handle +
dac12fbc
KB		 3672 (next_queue_index -
3673 (void __iomem *)ctrl_info->queue_memory_base);
6c223761
KB		 3674
3675 return 0;
3676}
3677
3678static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3679{
3680 unsigned int i;
3681 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3682 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3683
3684 /*
3685 * Initialize the backpointers to the controller structure in
3686 * each operational queue group structure.
3687 */
3688 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3689 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3690
3691 /*
3692 * Assign IDs to all operational queues. Note that the IDs
3693 * assigned to operational IQs are independent of the IDs
3694 * assigned to operational OQs.
3695 */
3696 ctrl_info->event_queue.oq_id = next_oq_id++;
3697 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3698 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3699 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3700 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3701 }
3702
3703 /*
3704 * Assign MSI-X table entry indexes to all queues. Note that the
3705 * interrupt for the event queue is shared with the first queue group.
3706 */
3707 ctrl_info->event_queue.int_msg_num = 0;
3708 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3709 ctrl_info->queue_groups[i].int_msg_num = i;
3710
3711 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3712 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3713 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3714 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3715 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3716 }
3717}
3718
3719static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3720{
3721 size_t alloc_length;
3722 struct pqi_admin_queues_aligned *admin_queues_aligned;
3723 struct pqi_admin_queues *admin_queues;
3724
3725 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3726 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3727
3728 ctrl_info->admin_queue_memory_base =
750afb08
LC		 3729 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
3730 &ctrl_info->admin_queue_memory_base_dma_handle,
3731 GFP_KERNEL);
6c223761
KB		 3732
3733 if (!ctrl_info->admin_queue_memory_base)
3734 return -ENOMEM;
3735
3736 ctrl_info->admin_queue_memory_length = alloc_length;
3737
3738 admin_queues = &ctrl_info->admin_queues;
3739 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3740 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3741 admin_queues->iq_element_array =
3742 &admin_queues_aligned->iq_element_array;
3743 admin_queues->oq_element_array =
3744 &admin_queues_aligned->oq_element_array;
3745 admin_queues->iq_ci = &admin_queues_aligned->iq_ci;
dac12fbc
KB		 3746 admin_queues->oq_pi =
3747 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi;
6c223761
KB		 3748
3749 admin_queues->iq_element_array_bus_addr =
3750 ctrl_info->admin_queue_memory_base_dma_handle +
3751 (admin_queues->iq_element_array -
3752 ctrl_info->admin_queue_memory_base);
3753 admin_queues->oq_element_array_bus_addr =
3754 ctrl_info->admin_queue_memory_base_dma_handle +
3755 (admin_queues->oq_element_array -
3756 ctrl_info->admin_queue_memory_base);
3757 admin_queues->iq_ci_bus_addr =
3758 ctrl_info->admin_queue_memory_base_dma_handle +
3759 ((void *)admin_queues->iq_ci -
3760 ctrl_info->admin_queue_memory_base);
3761 admin_queues->oq_pi_bus_addr =
3762 ctrl_info->admin_queue_memory_base_dma_handle +
dac12fbc
KB		 3763 ((void __iomem *)admin_queues->oq_pi -
3764 (void __iomem *)ctrl_info->admin_queue_memory_base);
6c223761
KB		 3765
3766 return 0;
3767}
3768
4fd22c13 3769#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ
6c223761
KB		 3770#define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3771
3772static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3773{
3774 struct pqi_device_registers __iomem *pqi_registers;
3775 struct pqi_admin_queues *admin_queues;
3776 unsigned long timeout;
3777 u8 status;
3778 u32 reg;
3779
3780 pqi_registers = ctrl_info->pqi_registers;
3781 admin_queues = &ctrl_info->admin_queues;
3782
3783 writeq((u64)admin_queues->iq_element_array_bus_addr,
3784 &pqi_registers->admin_iq_element_array_addr);
3785 writeq((u64)admin_queues->oq_element_array_bus_addr,
3786 &pqi_registers->admin_oq_element_array_addr);
3787 writeq((u64)admin_queues->iq_ci_bus_addr,
3788 &pqi_registers->admin_iq_ci_addr);
3789 writeq((u64)admin_queues->oq_pi_bus_addr,
3790 &pqi_registers->admin_oq_pi_addr);
3791
3792 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
e655d469 3793 (PQI_ADMIN_OQ_NUM_ELEMENTS << 8) |
6c223761
KB		 3794 (admin_queues->int_msg_num << 16);
3795 writel(reg, &pqi_registers->admin_iq_num_elements);
3796 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3797 &pqi_registers->function_and_status_code);
3798
3799 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3800 while (1) {
3801 status = readb(&pqi_registers->function_and_status_code);
3802 if (status == PQI_STATUS_IDLE)
3803 break;
3804 if (time_after(jiffies, timeout))
3805 return -ETIMEDOUT;
3806 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
3807 }
3808
3809 /*
3810 * The offset registers are not initialized to the correct
3811 * offsets until *after* the create admin queue pair command
3812 * completes successfully.
3813 */
3814 admin_queues->iq_pi = ctrl_info->iomem_base +
3815 PQI_DEVICE_REGISTERS_OFFSET +
3816 readq(&pqi_registers->admin_iq_pi_offset);
3817 admin_queues->oq_ci = ctrl_info->iomem_base +
3818 PQI_DEVICE_REGISTERS_OFFSET +
3819 readq(&pqi_registers->admin_oq_ci_offset);
3820
3821 return 0;
3822}
3823
3824static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
3825 struct pqi_general_admin_request *request)
3826{
3827 struct pqi_admin_queues *admin_queues;
3828 void *next_element;
3829 pqi_index_t iq_pi;
3830
3831 admin_queues = &ctrl_info->admin_queues;
3832 iq_pi = admin_queues->iq_pi_copy;
3833
3834 next_element = admin_queues->iq_element_array +
3835 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
3836
3837 memcpy(next_element, request, sizeof(*request));
3838
3839 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
3840 admin_queues->iq_pi_copy = iq_pi;
3841
3842 /*
3843 * This write notifies the controller that an IU is available to be
3844 * processed.
3845 */
3846 writel(iq_pi, admin_queues->iq_pi);
3847}
3848
13bede67
KB		 3849#define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
3850
6c223761
KB		 3851static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
3852 struct pqi_general_admin_response *response)
3853{
3854 struct pqi_admin_queues *admin_queues;
3855 pqi_index_t oq_pi;
3856 pqi_index_t oq_ci;
3857 unsigned long timeout;
3858
3859 admin_queues = &ctrl_info->admin_queues;
3860 oq_ci = admin_queues->oq_ci_copy;
3861
4fd22c13 3862 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies;
6c223761
KB		 3863
3864 while (1) {
dac12fbc 3865 oq_pi = readl(admin_queues->oq_pi);
6c223761
KB		 3866 if (oq_pi != oq_ci)
3867 break;
3868 if (time_after(jiffies, timeout)) {
3869 dev_err(&ctrl_info->pci_dev->dev,
3870 "timed out waiting for admin response\n");
3871 return -ETIMEDOUT;
3872 }
13bede67
KB		 3873 if (!sis_is_firmware_running(ctrl_info))
3874 return -ENXIO;
6c223761
KB		 3875 usleep_range(1000, 2000);
3876 }
3877
3878 memcpy(response, admin_queues->oq_element_array +
3879 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
3880
3881 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
3882 admin_queues->oq_ci_copy = oq_ci;
3883 writel(oq_ci, admin_queues->oq_ci);
3884
3885 return 0;
3886}
3887
3888static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
3889 struct pqi_queue_group *queue_group, enum pqi_io_path path,
3890 struct pqi_io_request *io_request)
3891{
3892 struct pqi_io_request *next;
3893 void *next_element;
3894 pqi_index_t iq_pi;
3895 pqi_index_t iq_ci;
3896 size_t iu_length;
3897 unsigned long flags;
3898 unsigned int num_elements_needed;
3899 unsigned int num_elements_to_end_of_queue;
3900 size_t copy_count;
3901 struct pqi_iu_header *request;
3902
3903 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
3904
376fb880
KB		 3905 if (io_request) {
3906 io_request->queue_group = queue_group;
6c223761
KB		 3907 list_add_tail(&io_request->request_list_entry,
3908 &queue_group->request_list[path]);
376fb880 3909 }
6c223761
KB		 3910
3911 iq_pi = queue_group->iq_pi_copy[path];
3912
3913 list_for_each_entry_safe(io_request, next,
3914 &queue_group->request_list[path], request_list_entry) {
3915
3916 request = io_request->iu;
3917
3918 iu_length = get_unaligned_le16(&request->iu_length) +
3919 PQI_REQUEST_HEADER_LENGTH;
3920 num_elements_needed =
3921 DIV_ROUND_UP(iu_length,
3922 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3923
dac12fbc 3924 iq_ci = readl(queue_group->iq_ci[path]);
6c223761
KB		 3925
3926 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
3927 ctrl_info->num_elements_per_iq))
3928 break;
3929
3930 put_unaligned_le16(queue_group->oq_id,
3931 &request->response_queue_id);
3932
3933 next_element = queue_group->iq_element_array[path] +
3934 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3935
3936 num_elements_to_end_of_queue =
3937 ctrl_info->num_elements_per_iq - iq_pi;
3938
3939 if (num_elements_needed <= num_elements_to_end_of_queue) {
3940 memcpy(next_element, request, iu_length);
3941 } else {
3942 copy_count = num_elements_to_end_of_queue *
3943 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
3944 memcpy(next_element, request, copy_count);
3945 memcpy(queue_group->iq_element_array[path],
3946 (u8 *)request + copy_count,
3947 iu_length - copy_count);
3948 }
3949
3950 iq_pi = (iq_pi + num_elements_needed) %
3951 ctrl_info->num_elements_per_iq;
3952
3953 list_del(&io_request->request_list_entry);
3954 }
3955
3956 if (iq_pi != queue_group->iq_pi_copy[path]) {
3957 queue_group->iq_pi_copy[path] = iq_pi;
3958 /*
3959 * This write notifies the controller that one or more IUs are
3960 * available to be processed.
3961 */
3962 writel(iq_pi, queue_group->iq_pi[path]);
3963 }
3964
3965 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
3966}
3967
1f37e992
KB		 3968#define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
3969
3970static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
3971 struct completion *wait)
3972{
3973 int rc;
1f37e992
KB		 3974
3975 while (1) {
3976 if (wait_for_completion_io_timeout(wait,
4fd22c13 3977 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) {
1f37e992
KB		 3978 rc = 0;
3979 break;
3980 }
3981
3982 pqi_check_ctrl_health(ctrl_info);
3983 if (pqi_ctrl_offline(ctrl_info)) {
3984 rc = -ENXIO;
3985 break;
3986 }
1f37e992
KB		 3987 }
3988
3989 return rc;
3990}
3991
6c223761
KB		 3992static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
3993 void *context)
3994{
3995 struct completion *waiting = context;
3996
3997 complete(waiting);
3998}
3999
694c5d5b
KB		 4000static int pqi_process_raid_io_error_synchronous(
4001 struct pqi_raid_error_info *error_info)
26b390ab
KB		 4002{
4003 int rc = -EIO;
4004
4005 switch (error_info->data_out_result) {
4006 case PQI_DATA_IN_OUT_GOOD:
4007 if (error_info->status == SAM_STAT_GOOD)
4008 rc = 0;
4009 break;
4010 case PQI_DATA_IN_OUT_UNDERFLOW:
4011 if (error_info->status == SAM_STAT_GOOD ||
4012 error_info->status == SAM_STAT_CHECK_CONDITION)
4013 rc = 0;
4014 break;
4015 case PQI_DATA_IN_OUT_ABORTED:
4016 rc = PQI_CMD_STATUS_ABORTED;
4017 break;
4018 }
4019
4020 return rc;
4021}
4022
6c223761
KB		 4023static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
4024 struct pqi_iu_header *request, unsigned int flags,
4025 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
4026{
957c5ab1 4027 int rc = 0;
6c223761
KB		 4028 struct pqi_io_request *io_request;
4029 unsigned long start_jiffies;
4030 unsigned long msecs_blocked;
4031 size_t iu_length;
957c5ab1 4032 DECLARE_COMPLETION_ONSTACK(wait);
6c223761
KB		 4033
4034 /*
4035 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
4036 * are mutually exclusive.
4037 */
4038
4039 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
4040 if (down_interruptible(&ctrl_info->sync_request_sem))
4041 return -ERESTARTSYS;
4042 } else {
4043 if (timeout_msecs == NO_TIMEOUT) {
4044 down(&ctrl_info->sync_request_sem);
4045 } else {
4046 start_jiffies = jiffies;
4047 if (down_timeout(&ctrl_info->sync_request_sem,
4048 msecs_to_jiffies(timeout_msecs)))
4049 return -ETIMEDOUT;
4050 msecs_blocked =
4051 jiffies_to_msecs(jiffies - start_jiffies);
cc8f5260
DC		 4052 if (msecs_blocked >= timeout_msecs) {
4053 rc = -ETIMEDOUT;
4054 goto out;
4055 }
6c223761
KB		 4056 timeout_msecs -= msecs_blocked;
4057 }
4058 }
4059
7561a7e4
KB		 4060 pqi_ctrl_busy(ctrl_info);
4061 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
4062 if (timeout_msecs == 0) {
957c5ab1 4063 pqi_ctrl_unbusy(ctrl_info);
7561a7e4
KB		 4064 rc = -ETIMEDOUT;
4065 goto out;
4066 }
4067
376fb880 4068 if (pqi_ctrl_offline(ctrl_info)) {
957c5ab1 4069 pqi_ctrl_unbusy(ctrl_info);
376fb880
KB		 4070 rc = -ENXIO;
4071 goto out;
4072 }
4073
0530736e
KB		 4074 atomic_inc(&ctrl_info->sync_cmds_outstanding);
4075
6c223761
KB		 4076 io_request = pqi_alloc_io_request(ctrl_info);
4077
4078 put_unaligned_le16(io_request->index,
4079 &(((struct pqi_raid_path_request *)request)->request_id));
4080
4081 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
4082 ((struct pqi_raid_path_request *)request)->error_index =
4083 ((struct pqi_raid_path_request *)request)->request_id;
4084
4085 iu_length = get_unaligned_le16(&request->iu_length) +
4086 PQI_REQUEST_HEADER_LENGTH;
4087 memcpy(io_request->iu, request, iu_length);
4088
957c5ab1
KB		 4089 io_request->io_complete_callback = pqi_raid_synchronous_complete;
4090 io_request->context = &wait;
4091
4092 pqi_start_io(ctrl_info,
4093 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
4094 io_request);
4095
4096 pqi_ctrl_unbusy(ctrl_info);
4097
4098 if (timeout_msecs == NO_TIMEOUT) {
4099 pqi_wait_for_completion_io(ctrl_info, &wait);
4100 } else {
4101 if (!wait_for_completion_io_timeout(&wait,
4102 msecs_to_jiffies(timeout_msecs))) {
4103 dev_warn(&ctrl_info->pci_dev->dev,
4104 "command timed out\n");
4105 rc = -ETIMEDOUT;
4106 }
4107 }
6c223761
KB		 4108
4109 if (error_info) {
4110 if (io_request->error_info)
4111 memcpy(error_info, io_request->error_info,
4112 sizeof(*error_info));
4113 else
4114 memset(error_info, 0, sizeof(*error_info));
4115 } else if (rc == 0 && io_request->error_info) {
26b390ab
KB		 4116 rc = pqi_process_raid_io_error_synchronous(
4117 io_request->error_info);
6c223761
KB		 4118 }
4119
4120 pqi_free_io_request(io_request);
4121
0530736e 4122 atomic_dec(&ctrl_info->sync_cmds_outstanding);
7561a7e4 4123out:
6c223761
KB		 4124 up(&ctrl_info->sync_request_sem);
4125
4126 return rc;
4127}
4128
4129static int pqi_validate_admin_response(
4130 struct pqi_general_admin_response *response, u8 expected_function_code)
4131{
4132 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
4133 return -EINVAL;
4134
4135 if (get_unaligned_le16(&response->header.iu_length) !=
4136 PQI_GENERAL_ADMIN_IU_LENGTH)
4137 return -EINVAL;
4138
4139 if (response->function_code != expected_function_code)
4140 return -EINVAL;
4141
4142 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
4143 return -EINVAL;
4144
4145 return 0;
4146}
4147
4148static int pqi_submit_admin_request_synchronous(
4149 struct pqi_ctrl_info *ctrl_info,
4150 struct pqi_general_admin_request *request,
4151 struct pqi_general_admin_response *response)
4152{
4153 int rc;
4154
4155 pqi_submit_admin_request(ctrl_info, request);
4156
4157 rc = pqi_poll_for_admin_response(ctrl_info, response);
4158
4159 if (rc == 0)
4160 rc = pqi_validate_admin_response(response,
4161 request->function_code);
4162
4163 return rc;
4164}
4165
4166static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
4167{
4168 int rc;
4169 struct pqi_general_admin_request request;
4170 struct pqi_general_admin_response response;
4171 struct pqi_device_capability *capability;
4172 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
4173
4174 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
4175 if (!capability)
4176 return -ENOMEM;
4177
4178 memset(&request, 0, sizeof(request));
4179
4180 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4181 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4182 &request.header.iu_length);
4183 request.function_code =
4184 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
4185 put_unaligned_le32(sizeof(*capability),
4186 &request.data.report_device_capability.buffer_length);
4187
4188 rc = pqi_map_single(ctrl_info->pci_dev,
4189 &request.data.report_device_capability.sg_descriptor,
4190 capability, sizeof(*capability),
6917a9cc 4191 DMA_FROM_DEVICE);
6c223761
KB		 4192 if (rc)
4193 goto out;
4194
4195 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4196 &response);
4197
4198 pqi_pci_unmap(ctrl_info->pci_dev,
4199 &request.data.report_device_capability.sg_descriptor, 1,
6917a9cc 4200 DMA_FROM_DEVICE);
6c223761
KB		 4201
4202 if (rc)
4203 goto out;
4204
4205 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
4206 rc = -EIO;
4207 goto out;
4208 }
4209
4210 ctrl_info->max_inbound_queues =
4211 get_unaligned_le16(&capability->max_inbound_queues);
4212 ctrl_info->max_elements_per_iq =
4213 get_unaligned_le16(&capability->max_elements_per_iq);
4214 ctrl_info->max_iq_element_length =
4215 get_unaligned_le16(&capability->max_iq_element_length)
4216 * 16;
4217 ctrl_info->max_outbound_queues =
4218 get_unaligned_le16(&capability->max_outbound_queues);
4219 ctrl_info->max_elements_per_oq =
4220 get_unaligned_le16(&capability->max_elements_per_oq);
4221 ctrl_info->max_oq_element_length =
4222 get_unaligned_le16(&capability->max_oq_element_length)
4223 * 16;
4224
4225 sop_iu_layer_descriptor =
4226 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
4227
4228 ctrl_info->max_inbound_iu_length_per_firmware =
4229 get_unaligned_le16(
4230 &sop_iu_layer_descriptor->max_inbound_iu_length);
4231 ctrl_info->inbound_spanning_supported =
4232 sop_iu_layer_descriptor->inbound_spanning_supported;
4233 ctrl_info->outbound_spanning_supported =
4234 sop_iu_layer_descriptor->outbound_spanning_supported;
4235
4236out:
4237 kfree(capability);
4238
4239 return rc;
4240}
4241
4242static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
4243{
4244 if (ctrl_info->max_iq_element_length <
4245 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4246 dev_err(&ctrl_info->pci_dev->dev,
4247 "max. inbound queue element length of %d is less than the required length of %d\n",
4248 ctrl_info->max_iq_element_length,
4249 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4250 return -EINVAL;
4251 }
4252
4253 if (ctrl_info->max_oq_element_length <
4254 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
4255 dev_err(&ctrl_info->pci_dev->dev,
4256 "max. outbound queue element length of %d is less than the required length of %d\n",
4257 ctrl_info->max_oq_element_length,
4258 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
4259 return -EINVAL;
4260 }
4261
4262 if (ctrl_info->max_inbound_iu_length_per_firmware <
4263 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4264 dev_err(&ctrl_info->pci_dev->dev,
4265 "max. inbound IU length of %u is less than the min. required length of %d\n",
4266 ctrl_info->max_inbound_iu_length_per_firmware,
4267 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4268 return -EINVAL;
4269 }
4270
77668f41
KB		 4271 if (!ctrl_info->inbound_spanning_supported) {
4272 dev_err(&ctrl_info->pci_dev->dev,
4273 "the controller does not support inbound spanning\n");
4274 return -EINVAL;
4275 }
4276
4277 if (ctrl_info->outbound_spanning_supported) {
4278 dev_err(&ctrl_info->pci_dev->dev,
4279 "the controller supports outbound spanning but this driver does not\n");
4280 return -EINVAL;
4281 }
4282
6c223761
KB		 4283 return 0;
4284}
4285
6c223761
KB		 4286static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
4287{
4288 int rc;
4289 struct pqi_event_queue *event_queue;
4290 struct pqi_general_admin_request request;
4291 struct pqi_general_admin_response response;
4292
4293 event_queue = &ctrl_info->event_queue;
4294
4295 /*
4296 * Create OQ (Outbound Queue - device to host queue) to dedicate
4297 * to events.
4298 */
4299 memset(&request, 0, sizeof(request));
4300 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4301 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4302 &request.header.iu_length);
4303 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4304 put_unaligned_le16(event_queue->oq_id,
4305 &request.data.create_operational_oq.queue_id);
4306 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
4307 &request.data.create_operational_oq.element_array_addr);
4308 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
4309 &request.data.create_operational_oq.pi_addr);
4310 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
4311 &request.data.create_operational_oq.num_elements);
4312 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
4313 &request.data.create_operational_oq.element_length);
4314 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4315 put_unaligned_le16(event_queue->int_msg_num,
4316 &request.data.create_operational_oq.int_msg_num);
4317
4318 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4319 &response);
4320 if (rc)
4321 return rc;
4322
4323 event_queue->oq_ci = ctrl_info->iomem_base +
4324 PQI_DEVICE_REGISTERS_OFFSET +
4325 get_unaligned_le64(
4326 &response.data.create_operational_oq.oq_ci_offset);
4327
4328 return 0;
4329}
4330
061ef06a
KB		 4331static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
4332 unsigned int group_number)
6c223761 4333{
6c223761
KB		 4334 int rc;
4335 struct pqi_queue_group *queue_group;
4336 struct pqi_general_admin_request request;
4337 struct pqi_general_admin_response response;
4338
061ef06a 4339 queue_group = &ctrl_info->queue_groups[group_number];
6c223761
KB		 4340
4341 /*
4342 * Create IQ (Inbound Queue - host to device queue) for
4343 * RAID path.
4344 */
4345 memset(&request, 0, sizeof(request));
4346 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4347 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4348 &request.header.iu_length);
4349 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4350 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
4351 &request.data.create_operational_iq.queue_id);
4352 put_unaligned_le64(
4353 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
4354 &request.data.create_operational_iq.element_array_addr);
4355 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
4356 &request.data.create_operational_iq.ci_addr);
4357 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4358 &request.data.create_operational_iq.num_elements);
4359 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4360 &request.data.create_operational_iq.element_length);
4361 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4362
4363 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4364 &response);
4365 if (rc) {
4366 dev_err(&ctrl_info->pci_dev->dev,
4367 "error creating inbound RAID queue\n");
4368 return rc;
4369 }
4370
4371 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
4372 PQI_DEVICE_REGISTERS_OFFSET +
4373 get_unaligned_le64(
4374 &response.data.create_operational_iq.iq_pi_offset);
4375
4376 /*
4377 * Create IQ (Inbound Queue - host to device queue) for
4378 * Advanced I/O (AIO) path.
4379 */
4380 memset(&request, 0, sizeof(request));
4381 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4382 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4383 &request.header.iu_length);
4384 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4385 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4386 &request.data.create_operational_iq.queue_id);
4387 put_unaligned_le64((u64)queue_group->
4388 iq_element_array_bus_addr[AIO_PATH],
4389 &request.data.create_operational_iq.element_array_addr);
4390 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4391 &request.data.create_operational_iq.ci_addr);
4392 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4393 &request.data.create_operational_iq.num_elements);
4394 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4395 &request.data.create_operational_iq.element_length);
4396 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4397
4398 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4399 &response);
4400 if (rc) {
4401 dev_err(&ctrl_info->pci_dev->dev,
4402 "error creating inbound AIO queue\n");
339faa81 4403 return rc;
6c223761
KB		 4404 }
4405
4406 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4407 PQI_DEVICE_REGISTERS_OFFSET +
4408 get_unaligned_le64(
4409 &response.data.create_operational_iq.iq_pi_offset);
4410
4411 /*
4412 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4413 * assumed to be for RAID path I/O unless we change the queue's
4414 * property.
4415 */
4416 memset(&request, 0, sizeof(request));
4417 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4418 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4419 &request.header.iu_length);
4420 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4421 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4422 &request.data.change_operational_iq_properties.queue_id);
4423 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4424 &request.data.change_operational_iq_properties.vendor_specific);
4425
4426 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4427 &response);
4428 if (rc) {
4429 dev_err(&ctrl_info->pci_dev->dev,
4430 "error changing queue property\n");
339faa81 4431 return rc;
6c223761
KB		 4432 }
4433
4434 /*
4435 * Create OQ (Outbound Queue - device to host queue).
4436 */
4437 memset(&request, 0, sizeof(request));
4438 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4439 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4440 &request.header.iu_length);
4441 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4442 put_unaligned_le16(queue_group->oq_id,
4443 &request.data.create_operational_oq.queue_id);
4444 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4445 &request.data.create_operational_oq.element_array_addr);
4446 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4447 &request.data.create_operational_oq.pi_addr);
4448 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4449 &request.data.create_operational_oq.num_elements);
4450 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4451 &request.data.create_operational_oq.element_length);
4452 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4453 put_unaligned_le16(queue_group->int_msg_num,
4454 &request.data.create_operational_oq.int_msg_num);
4455
4456 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4457 &response);
4458 if (rc) {
4459 dev_err(&ctrl_info->pci_dev->dev,
4460 "error creating outbound queue\n");
339faa81 4461 return rc;
6c223761
KB		 4462 }
4463
4464 queue_group->oq_ci = ctrl_info->iomem_base +
4465 PQI_DEVICE_REGISTERS_OFFSET +
4466 get_unaligned_le64(
4467 &response.data.create_operational_oq.oq_ci_offset);
4468
6c223761 4469 return 0;
6c223761
KB		 4470}
4471
4472static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4473{
4474 int rc;
4475 unsigned int i;
4476
4477 rc = pqi_create_event_queue(ctrl_info);
4478 if (rc) {
4479 dev_err(&ctrl_info->pci_dev->dev,
4480 "error creating event queue\n");
4481 return rc;
4482 }
4483
4484 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
061ef06a 4485 rc = pqi_create_queue_group(ctrl_info, i);
6c223761
KB		 4486 if (rc) {
4487 dev_err(&ctrl_info->pci_dev->dev,
4488 "error creating queue group number %u/%u\n",
4489 i, ctrl_info->num_queue_groups);
4490 return rc;
4491 }
4492 }
4493
4494 return 0;
4495}
4496
4497#define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4498 (offsetof(struct pqi_event_config, descriptors) + \
4499 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4500
6a50d6ad
KB		 4501static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4502 bool enable_events)
6c223761
KB		 4503{
4504 int rc;
4505 unsigned int i;
4506 struct pqi_event_config *event_config;
6a50d6ad 4507 struct pqi_event_descriptor *event_descriptor;
6c223761
KB		 4508 struct pqi_general_management_request request;
4509
4510 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4511 GFP_KERNEL);
4512 if (!event_config)
4513 return -ENOMEM;
4514
4515 memset(&request, 0, sizeof(request));
4516
4517 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4518 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4519 data.report_event_configuration.sg_descriptors[1]) -
4520 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4521 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4522 &request.data.report_event_configuration.buffer_length);
4523
4524 rc = pqi_map_single(ctrl_info->pci_dev,
4525 request.data.report_event_configuration.sg_descriptors,
4526 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
6917a9cc 4527 DMA_FROM_DEVICE);
6c223761
KB		 4528 if (rc)
4529 goto out;
4530
4531 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4532 0, NULL, NO_TIMEOUT);
4533
4534 pqi_pci_unmap(ctrl_info->pci_dev,
4535 request.data.report_event_configuration.sg_descriptors, 1,
6917a9cc 4536 DMA_FROM_DEVICE);
6c223761
KB		 4537
4538 if (rc)
4539 goto out;
4540
6a50d6ad
KB		 4541 for (i = 0; i < event_config->num_event_descriptors; i++) {
4542 event_descriptor = &event_config->descriptors[i];
4543 if (enable_events &&
4544 pqi_is_supported_event(event_descriptor->event_type))
4545 put_unaligned_le16(ctrl_info->event_queue.oq_id,
4546 &event_descriptor->oq_id);
4547 else
4548 put_unaligned_le16(0, &event_descriptor->oq_id);
4549 }
6c223761
KB		 4550
4551 memset(&request, 0, sizeof(request));
4552
4553 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4554 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4555 data.report_event_configuration.sg_descriptors[1]) -
4556 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4557 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4558 &request.data.report_event_configuration.buffer_length);
4559
4560 rc = pqi_map_single(ctrl_info->pci_dev,
4561 request.data.report_event_configuration.sg_descriptors,
4562 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
6917a9cc 4563 DMA_TO_DEVICE);
6c223761
KB		 4564 if (rc)
4565 goto out;
4566
4567 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4568 NULL, NO_TIMEOUT);
4569
4570 pqi_pci_unmap(ctrl_info->pci_dev,
4571 request.data.report_event_configuration.sg_descriptors, 1,
6917a9cc 4572 DMA_TO_DEVICE);
6c223761
KB		 4573
4574out:
4575 kfree(event_config);
4576
4577 return rc;
4578}
4579
6a50d6ad
KB		 4580static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4581{
4582 return pqi_configure_events(ctrl_info, true);
4583}
4584
4585static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4586{
4587 return pqi_configure_events(ctrl_info, false);
4588}
4589
6c223761
KB		 4590static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4591{
4592 unsigned int i;
4593 struct device *dev;
4594 size_t sg_chain_buffer_length;
4595 struct pqi_io_request *io_request;
4596
4597 if (!ctrl_info->io_request_pool)
4598 return;
4599
4600 dev = &ctrl_info->pci_dev->dev;
4601 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4602 io_request = ctrl_info->io_request_pool;
4603
4604 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4605 kfree(io_request->iu);
4606 if (!io_request->sg_chain_buffer)
4607 break;
4608 dma_free_coherent(dev, sg_chain_buffer_length,
4609 io_request->sg_chain_buffer,
4610 io_request->sg_chain_buffer_dma_handle);
4611 io_request++;
4612 }
4613
4614 kfree(ctrl_info->io_request_pool);
4615 ctrl_info->io_request_pool = NULL;
4616}
4617
4618static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4619{
6c223761 4620
694c5d5b
KB		 4621 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev,
4622 ctrl_info->error_buffer_length,
4623 &ctrl_info->error_buffer_dma_handle,
4624 GFP_KERNEL);
6c223761
KB		 4625 if (!ctrl_info->error_buffer)
4626 return -ENOMEM;
4627
4628 return 0;
4629}
4630
4631static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4632{
4633 unsigned int i;
4634 void *sg_chain_buffer;
4635 size_t sg_chain_buffer_length;
4636 dma_addr_t sg_chain_buffer_dma_handle;
4637 struct device *dev;
4638 struct pqi_io_request *io_request;
4639
6396bb22
KC		 4640 ctrl_info->io_request_pool =
4641 kcalloc(ctrl_info->max_io_slots,
4642 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
6c223761
KB		 4643
4644 if (!ctrl_info->io_request_pool) {
4645 dev_err(&ctrl_info->pci_dev->dev,
4646 "failed to allocate I/O request pool\n");
4647 goto error;
4648 }
4649
4650 dev = &ctrl_info->pci_dev->dev;
4651 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4652 io_request = ctrl_info->io_request_pool;
4653
4654 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4655 io_request->iu =
4656 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
4657
4658 if (!io_request->iu) {
4659 dev_err(&ctrl_info->pci_dev->dev,
4660 "failed to allocate IU buffers\n");
4661 goto error;
4662 }
4663
4664 sg_chain_buffer = dma_alloc_coherent(dev,
4665 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4666 GFP_KERNEL);
4667
4668 if (!sg_chain_buffer) {
4669 dev_err(&ctrl_info->pci_dev->dev,
4670 "failed to allocate PQI scatter-gather chain buffers\n");
4671 goto error;
4672 }
4673
4674 io_request->index = i;
4675 io_request->sg_chain_buffer = sg_chain_buffer;
4676 io_request->sg_chain_buffer_dma_handle =
4677 sg_chain_buffer_dma_handle;
4678 io_request++;
4679 }
4680
4681 return 0;
4682
4683error:
4684 pqi_free_all_io_requests(ctrl_info);
4685
4686 return -ENOMEM;
4687}
4688
4689/*
4690 * Calculate required resources that are sized based on max. outstanding
4691 * requests and max. transfer size.
4692 */
4693
4694static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4695{
4696 u32 max_transfer_size;
4697 u32 max_sg_entries;
4698
4699 ctrl_info->scsi_ml_can_queue =
4700 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4701 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4702
4703 ctrl_info->error_buffer_length =
4704 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4705
d727a776
KB		 4706 if (reset_devices)
4707 max_transfer_size = min(ctrl_info->max_transfer_size,
4708 PQI_MAX_TRANSFER_SIZE_KDUMP);
4709 else
4710 max_transfer_size = min(ctrl_info->max_transfer_size,
4711 PQI_MAX_TRANSFER_SIZE);
6c223761
KB		 4712
4713 max_sg_entries = max_transfer_size / PAGE_SIZE;
4714
4715 /* +1 to cover when the buffer is not page-aligned. */
4716 max_sg_entries++;
4717
4718 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4719
4720 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4721
4722 ctrl_info->sg_chain_buffer_length =
e1d213bd
KB		 4723 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4724 PQI_EXTRA_SGL_MEMORY;
6c223761
KB		 4725 ctrl_info->sg_tablesize = max_sg_entries;
4726 ctrl_info->max_sectors = max_transfer_size / 512;
4727}
4728
4729static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4730{
6c223761
KB		 4731 int num_queue_groups;
4732 u16 num_elements_per_iq;
4733 u16 num_elements_per_oq;
4734
d727a776
KB		 4735 if (reset_devices) {
4736 num_queue_groups = 1;
4737 } else {
4738 int num_cpus;
4739 int max_queue_groups;
4740
4741 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4742 ctrl_info->max_outbound_queues - 1);
4743 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
6c223761 4744
d727a776
KB		 4745 num_cpus = num_online_cpus();
4746 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4747 num_queue_groups = min(num_queue_groups, max_queue_groups);
4748 }
6c223761
KB		 4749
4750 ctrl_info->num_queue_groups = num_queue_groups;
061ef06a 4751 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
6c223761 4752
77668f41
KB		 4753 /*
4754 * Make sure that the max. inbound IU length is an even multiple
4755 * of our inbound element length.
4756 */
4757 ctrl_info->max_inbound_iu_length =
4758 (ctrl_info->max_inbound_iu_length_per_firmware /
4759 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4760 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
6c223761
KB		 4761
4762 num_elements_per_iq =
4763 (ctrl_info->max_inbound_iu_length /
4764 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4765
4766 /* Add one because one element in each queue is unusable. */
4767 num_elements_per_iq++;
4768
4769 num_elements_per_iq = min(num_elements_per_iq,
4770 ctrl_info->max_elements_per_iq);
4771
4772 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4773 num_elements_per_oq = min(num_elements_per_oq,
4774 ctrl_info->max_elements_per_oq);
4775
4776 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4777 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4778
4779 ctrl_info->max_sg_per_iu =
4780 ((ctrl_info->max_inbound_iu_length -
4781 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4782 sizeof(struct pqi_sg_descriptor)) +
4783 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
4784}
4785
4786static inline void pqi_set_sg_descriptor(
4787 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg)
4788{
4789 u64 address = (u64)sg_dma_address(sg);
4790 unsigned int length = sg_dma_len(sg);
4791
4792 put_unaligned_le64(address, &sg_descriptor->address);
4793 put_unaligned_le32(length, &sg_descriptor->length);
4794 put_unaligned_le32(0, &sg_descriptor->flags);
4795}
4796
4797static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
4798 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
4799 struct pqi_io_request *io_request)
4800{
4801 int i;
4802 u16 iu_length;
4803 int sg_count;
4804 bool chained;
4805 unsigned int num_sg_in_iu;
4806 unsigned int max_sg_per_iu;
4807 struct scatterlist *sg;
4808 struct pqi_sg_descriptor *sg_descriptor;
4809
4810 sg_count = scsi_dma_map(scmd);
4811 if (sg_count < 0)
4812 return sg_count;
4813
4814 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
4815 PQI_REQUEST_HEADER_LENGTH;
4816
4817 if (sg_count == 0)
4818 goto out;
4819
4820 sg = scsi_sglist(scmd);
4821 sg_descriptor = request->sg_descriptors;
4822 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4823 chained = false;
4824 num_sg_in_iu = 0;
4825 i = 0;
4826
4827 while (1) {
4828 pqi_set_sg_descriptor(sg_descriptor, sg);
4829 if (!chained)
4830 num_sg_in_iu++;
4831 i++;
4832 if (i == sg_count)
4833 break;
4834 sg_descriptor++;
4835 if (i == max_sg_per_iu) {
4836 put_unaligned_le64(
4837 (u64)io_request->sg_chain_buffer_dma_handle,
4838 &sg_descriptor->address);
4839 put_unaligned_le32((sg_count - num_sg_in_iu)
4840 * sizeof(*sg_descriptor),
4841 &sg_descriptor->length);
4842 put_unaligned_le32(CISS_SG_CHAIN,
4843 &sg_descriptor->flags);
4844 chained = true;
4845 num_sg_in_iu++;
4846 sg_descriptor = io_request->sg_chain_buffer;
4847 }
4848 sg = sg_next(sg);
4849 }
4850
4851 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4852 request->partial = chained;
4853 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4854
4855out:
4856 put_unaligned_le16(iu_length, &request->header.iu_length);
4857
4858 return 0;
4859}
4860
4861static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
4862 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
4863 struct pqi_io_request *io_request)
4864{
4865 int i;
4866 u16 iu_length;
4867 int sg_count;
a60eec02
KB		 4868 bool chained;
4869 unsigned int num_sg_in_iu;
4870 unsigned int max_sg_per_iu;
6c223761
KB		 4871 struct scatterlist *sg;
4872 struct pqi_sg_descriptor *sg_descriptor;
4873
4874 sg_count = scsi_dma_map(scmd);
4875 if (sg_count < 0)
4876 return sg_count;
a60eec02
KB		 4877
4878 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
4879 PQI_REQUEST_HEADER_LENGTH;
4880 num_sg_in_iu = 0;
4881
6c223761
KB		 4882 if (sg_count == 0)
4883 goto out;
4884
a60eec02
KB		 4885 sg = scsi_sglist(scmd);
4886 sg_descriptor = request->sg_descriptors;
4887 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4888 chained = false;
4889 i = 0;
4890
4891 while (1) {
4892 pqi_set_sg_descriptor(sg_descriptor, sg);
4893 if (!chained)
4894 num_sg_in_iu++;
4895 i++;
4896 if (i == sg_count)
4897 break;
4898 sg_descriptor++;
4899 if (i == max_sg_per_iu) {
4900 put_unaligned_le64(
4901 (u64)io_request->sg_chain_buffer_dma_handle,
4902 &sg_descriptor->address);
4903 put_unaligned_le32((sg_count - num_sg_in_iu)
4904 * sizeof(*sg_descriptor),
4905 &sg_descriptor->length);
4906 put_unaligned_le32(CISS_SG_CHAIN,
4907 &sg_descriptor->flags);
4908 chained = true;
4909 num_sg_in_iu++;
4910 sg_descriptor = io_request->sg_chain_buffer;
6c223761 4911 }
a60eec02 4912 sg = sg_next(sg);
6c223761
KB		 4913 }
4914
a60eec02
KB		 4915 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4916 request->partial = chained;
6c223761 4917 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
a60eec02
KB		 4918
4919out:
6c223761
KB		 4920 put_unaligned_le16(iu_length, &request->header.iu_length);
4921 request->num_sg_descriptors = num_sg_in_iu;
4922
4923 return 0;
4924}
4925
4926static void pqi_raid_io_complete(struct pqi_io_request *io_request,
4927 void *context)
4928{
4929 struct scsi_cmnd *scmd;
4930
4931 scmd = io_request->scmd;
4932 pqi_free_io_request(io_request);
4933 scsi_dma_unmap(scmd);
4934 pqi_scsi_done(scmd);
4935}
4936
376fb880
KB		 4937static int pqi_raid_submit_scsi_cmd_with_io_request(
4938 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
6c223761
KB		 4939 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4940 struct pqi_queue_group *queue_group)
4941{
4942 int rc;
4943 size_t cdb_length;
6c223761
KB		 4944 struct pqi_raid_path_request *request;
4945
6c223761
KB		 4946 io_request->io_complete_callback = pqi_raid_io_complete;
4947 io_request->scmd = scmd;
4948
6c223761
KB		 4949 request = io_request->iu;
4950 memset(request, 0,
4951 offsetof(struct pqi_raid_path_request, sg_descriptors));
4952
4953 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
4954 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4955 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4956 put_unaligned_le16(io_request->index, &request->request_id);
4957 request->error_index = request->request_id;
4958 memcpy(request->lun_number, device->scsi3addr,
4959 sizeof(request->lun_number));
4960
4961 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
4962 memcpy(request->cdb, scmd->cmnd, cdb_length);
4963
4964 switch (cdb_length) {
4965 case 6:
4966 case 10:
4967 case 12:
4968 case 16:
4969 /* No bytes in the Additional CDB bytes field */
4970 request->additional_cdb_bytes_usage =
4971 SOP_ADDITIONAL_CDB_BYTES_0;
4972 break;
4973 case 20:
4974 /* 4 bytes in the Additional cdb field */
4975 request->additional_cdb_bytes_usage =
4976 SOP_ADDITIONAL_CDB_BYTES_4;
4977 break;
4978 case 24:
4979 /* 8 bytes in the Additional cdb field */
4980 request->additional_cdb_bytes_usage =
4981 SOP_ADDITIONAL_CDB_BYTES_8;
4982 break;
4983 case 28:
4984 /* 12 bytes in the Additional cdb field */
4985 request->additional_cdb_bytes_usage =
4986 SOP_ADDITIONAL_CDB_BYTES_12;
4987 break;
4988 case 32:
4989 default:
4990 /* 16 bytes in the Additional cdb field */
4991 request->additional_cdb_bytes_usage =
4992 SOP_ADDITIONAL_CDB_BYTES_16;
4993 break;
4994 }
4995
4996 switch (scmd->sc_data_direction) {
4997 case DMA_TO_DEVICE:
4998 request->data_direction = SOP_READ_FLAG;
4999 break;
5000 case DMA_FROM_DEVICE:
5001 request->data_direction = SOP_WRITE_FLAG;
5002 break;
5003 case DMA_NONE:
5004 request->data_direction = SOP_NO_DIRECTION_FLAG;
5005 break;
5006 case DMA_BIDIRECTIONAL:
5007 request->data_direction = SOP_BIDIRECTIONAL;
5008 break;
5009 default:
5010 dev_err(&ctrl_info->pci_dev->dev,
5011 "unknown data direction: %d\n",
5012 scmd->sc_data_direction);
6c223761
KB		 5013 break;
5014 }
5015
5016 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
5017 if (rc) {
5018 pqi_free_io_request(io_request);
5019 return SCSI_MLQUEUE_HOST_BUSY;
5020 }
5021
5022 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
5023
5024 return 0;
5025}
5026
376fb880
KB		 5027static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5028 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5029 struct pqi_queue_group *queue_group)
5030{
5031 struct pqi_io_request *io_request;
5032
5033 io_request = pqi_alloc_io_request(ctrl_info);
5034
5035 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5036 device, scmd, queue_group);
5037}
5038
5039static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
5040{
5041 if (!pqi_ctrl_blocked(ctrl_info))
5042 schedule_work(&ctrl_info->raid_bypass_retry_work);
5043}
5044
5045static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
5046{
5047 struct scsi_cmnd *scmd;
03b288cf 5048 struct pqi_scsi_dev *device;
376fb880
KB		 5049 struct pqi_ctrl_info *ctrl_info;
5050
5051 if (!io_request->raid_bypass)
5052 return false;
5053
5054 scmd = io_request->scmd;
5055 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
5056 return false;
5057 if (host_byte(scmd->result) == DID_NO_CONNECT)
5058 return false;
5059
03b288cf
KB		 5060 device = scmd->device->hostdata;
5061 if (pqi_device_offline(device))
5062 return false;
5063
376fb880
KB		 5064 ctrl_info = shost_to_hba(scmd->device->host);
5065 if (pqi_ctrl_offline(ctrl_info))
5066 return false;
5067
5068 return true;
5069}
5070
5071static inline void pqi_add_to_raid_bypass_retry_list(
5072 struct pqi_ctrl_info *ctrl_info,
5073 struct pqi_io_request *io_request, bool at_head)
5074{
5075 unsigned long flags;
5076
5077 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5078 if (at_head)
5079 list_add(&io_request->request_list_entry,
5080 &ctrl_info->raid_bypass_retry_list);
5081 else
5082 list_add_tail(&io_request->request_list_entry,
5083 &ctrl_info->raid_bypass_retry_list);
5084 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5085}
5086
5087static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
5088 void *context)
5089{
5090 struct scsi_cmnd *scmd;
5091
5092 scmd = io_request->scmd;
5093 pqi_free_io_request(io_request);
5094 pqi_scsi_done(scmd);
5095}
5096
5097static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
5098{
5099 struct scsi_cmnd *scmd;
5100 struct pqi_ctrl_info *ctrl_info;
5101
5102 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
5103 scmd = io_request->scmd;
5104 scmd->result = 0;
5105 ctrl_info = shost_to_hba(scmd->device->host);
5106
5107 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
5108 pqi_schedule_bypass_retry(ctrl_info);
5109}
5110
5111static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
5112{
5113 struct scsi_cmnd *scmd;
5114 struct pqi_scsi_dev *device;
5115 struct pqi_ctrl_info *ctrl_info;
5116 struct pqi_queue_group *queue_group;
5117
5118 scmd = io_request->scmd;
5119 device = scmd->device->hostdata;
5120 if (pqi_device_in_reset(device)) {
5121 pqi_free_io_request(io_request);
5122 set_host_byte(scmd, DID_RESET);
5123 pqi_scsi_done(scmd);
5124 return 0;
5125 }
5126
5127 ctrl_info = shost_to_hba(scmd->device->host);
5128 queue_group = io_request->queue_group;
5129
5130 pqi_reinit_io_request(io_request);
5131
5132 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5133 device, scmd, queue_group);
5134}
5135
5136static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
5137 struct pqi_ctrl_info *ctrl_info)
5138{
5139 unsigned long flags;
5140 struct pqi_io_request *io_request;
5141
5142 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5143 io_request = list_first_entry_or_null(
5144 &ctrl_info->raid_bypass_retry_list,
5145 struct pqi_io_request, request_list_entry);
5146 if (io_request)
5147 list_del(&io_request->request_list_entry);
5148 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5149
5150 return io_request;
5151}
5152
5153static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
5154{
5155 int rc;
5156 struct pqi_io_request *io_request;
5157
5158 pqi_ctrl_busy(ctrl_info);
5159
5160 while (1) {
5161 if (pqi_ctrl_blocked(ctrl_info))
5162 break;
5163 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
5164 if (!io_request)
5165 break;
5166 rc = pqi_retry_raid_bypass(io_request);
5167 if (rc) {
5168 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
5169 true);
5170 pqi_schedule_bypass_retry(ctrl_info);
5171 break;
5172 }
5173 }
5174
5175 pqi_ctrl_unbusy(ctrl_info);
5176}
5177
5178static void pqi_raid_bypass_retry_worker(struct work_struct *work)
5179{
5180 struct pqi_ctrl_info *ctrl_info;
5181
5182 ctrl_info = container_of(work, struct pqi_ctrl_info,
5183 raid_bypass_retry_work);
5184 pqi_retry_raid_bypass_requests(ctrl_info);
5185}
5186
5f310425
KB		 5187static void pqi_clear_all_queued_raid_bypass_retries(
5188 struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 5189{
5190 unsigned long flags;
376fb880
KB		 5191
5192 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5f310425 5193 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
376fb880
KB		 5194 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5195}
5196
6c223761
KB		 5197static void pqi_aio_io_complete(struct pqi_io_request *io_request,
5198 void *context)
5199{
5200 struct scsi_cmnd *scmd;
5201
5202 scmd = io_request->scmd;
5203 scsi_dma_unmap(scmd);
5204 if (io_request->status == -EAGAIN)
5205 set_host_byte(scmd, DID_IMM_RETRY);
376fb880
KB		 5206 else if (pqi_raid_bypass_retry_needed(io_request)) {
5207 pqi_queue_raid_bypass_retry(io_request);
5208 return;
5209 }
6c223761
KB		 5210 pqi_free_io_request(io_request);
5211 pqi_scsi_done(scmd);
5212}
5213
5214static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5215 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5216 struct pqi_queue_group *queue_group)
5217{
5218 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
376fb880 5219 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
6c223761
KB		 5220}
5221
5222static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
5223 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
5224 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 5225 struct pqi_encryption_info *encryption_info, bool raid_bypass)
6c223761
KB		 5226{
5227 int rc;
5228 struct pqi_io_request *io_request;
5229 struct pqi_aio_path_request *request;
5230
5231 io_request = pqi_alloc_io_request(ctrl_info);
5232 io_request->io_complete_callback = pqi_aio_io_complete;
5233 io_request->scmd = scmd;
376fb880 5234 io_request->raid_bypass = raid_bypass;
6c223761
KB		 5235
5236 request = io_request->iu;
5237 memset(request, 0,
5238 offsetof(struct pqi_raid_path_request, sg_descriptors));
5239
5240 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
5241 put_unaligned_le32(aio_handle, &request->nexus_id);
5242 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
5243 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5244 put_unaligned_le16(io_request->index, &request->request_id);
5245 request->error_index = request->request_id;
5246 if (cdb_length > sizeof(request->cdb))
5247 cdb_length = sizeof(request->cdb);
5248 request->cdb_length = cdb_length;
5249 memcpy(request->cdb, cdb, cdb_length);
5250
5251 switch (scmd->sc_data_direction) {
5252 case DMA_TO_DEVICE:
5253 request->data_direction = SOP_READ_FLAG;
5254 break;
5255 case DMA_FROM_DEVICE:
5256 request->data_direction = SOP_WRITE_FLAG;
5257 break;
5258 case DMA_NONE:
5259 request->data_direction = SOP_NO_DIRECTION_FLAG;
5260 break;
5261 case DMA_BIDIRECTIONAL:
5262 request->data_direction = SOP_BIDIRECTIONAL;
5263 break;
5264 default:
5265 dev_err(&ctrl_info->pci_dev->dev,
5266 "unknown data direction: %d\n",
5267 scmd->sc_data_direction);
6c223761
KB		 5268 break;
5269 }
5270
5271 if (encryption_info) {
5272 request->encryption_enable = true;
5273 put_unaligned_le16(encryption_info->data_encryption_key_index,
5274 &request->data_encryption_key_index);
5275 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5276 &request->encrypt_tweak_lower);
5277 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5278 &request->encrypt_tweak_upper);
5279 }
5280
5281 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
5282 if (rc) {
5283 pqi_free_io_request(io_request);
5284 return SCSI_MLQUEUE_HOST_BUSY;
5285 }
5286
5287 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5288
5289 return 0;
5290}
5291
061ef06a
KB		 5292static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
5293 struct scsi_cmnd *scmd)
5294{
5295 u16 hw_queue;
5296
5297 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
5298 if (hw_queue > ctrl_info->max_hw_queue_index)
5299 hw_queue = 0;
5300
5301 return hw_queue;
5302}
5303
7561a7e4
KB		 5304/*
5305 * This function gets called just before we hand the completed SCSI request
5306 * back to the SML.
5307 */
5308
5309void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
5310{
5311 struct pqi_scsi_dev *device;
5312
1e46731e
MR		 5313 if (!scmd->device) {
5314 set_host_byte(scmd, DID_NO_CONNECT);
5315 return;
5316 }
5317
7561a7e4 5318 device = scmd->device->hostdata;
1e46731e
MR		 5319 if (!device) {
5320 set_host_byte(scmd, DID_NO_CONNECT);
5321 return;
5322 }
5323
7561a7e4
KB		 5324 atomic_dec(&device->scsi_cmds_outstanding);
5325}
5326
6c223761 5327static int pqi_scsi_queue_command(struct Scsi_Host *shost,
7d81d2b8 5328 struct scsi_cmnd *scmd)
6c223761
KB		 5329{
5330 int rc;
5331 struct pqi_ctrl_info *ctrl_info;
5332 struct pqi_scsi_dev *device;
061ef06a 5333 u16 hw_queue;
6c223761
KB		 5334 struct pqi_queue_group *queue_group;
5335 bool raid_bypassed;
5336
5337 device = scmd->device->hostdata;
6c223761
KB		 5338 ctrl_info = shost_to_hba(shost);
5339
1e46731e
MR		 5340 if (!device) {
5341 set_host_byte(scmd, DID_NO_CONNECT);
5342 pqi_scsi_done(scmd);
5343 return 0;
5344 }
5345
7561a7e4
KB		 5346 atomic_inc(&device->scsi_cmds_outstanding);
5347
1bdf6e93 5348 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(device)) {
6c223761
KB		 5349 set_host_byte(scmd, DID_NO_CONNECT);
5350 pqi_scsi_done(scmd);
5351 return 0;
5352 }
5353
7561a7e4 5354 pqi_ctrl_busy(ctrl_info);
4fd22c13 5355 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) ||
0530736e 5356 pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) {
7561a7e4
KB		 5357 rc = SCSI_MLQUEUE_HOST_BUSY;
5358 goto out;
5359 }
5360
7d81d2b8
KB		 5361 /*
5362 * This is necessary because the SML doesn't zero out this field during
5363 * error recovery.
5364 */
5365 scmd->result = 0;
5366
061ef06a
KB		 5367 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
5368 queue_group = &ctrl_info->queue_groups[hw_queue];
6c223761
KB		 5369
5370 if (pqi_is_logical_device(device)) {
5371 raid_bypassed = false;
588a63fe 5372 if (device->raid_bypass_enabled &&
694c5d5b 5373 !blk_rq_is_passthrough(scmd->request)) {
6c223761
KB		 5374 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
5375 scmd, queue_group);
8b664fef 5376 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) {
376fb880 5377 raid_bypassed = true;
8b664fef
KB		 5378 atomic_inc(&device->raid_bypass_cnt);
5379 }
6c223761
KB		 5380 }
5381 if (!raid_bypassed)
8b664fef 5382 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6c223761
KB		 5383 } else {
5384 if (device->aio_enabled)
8b664fef 5385 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6c223761 5386 else
8b664fef 5387 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6c223761
KB		 5388 }
5389
7561a7e4
KB		 5390out:
5391 pqi_ctrl_unbusy(ctrl_info);
5392 if (rc)
5393 atomic_dec(&device->scsi_cmds_outstanding);
5394
6c223761
KB		 5395 return rc;
5396}
5397
7561a7e4
KB		 5398static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
5399 struct pqi_queue_group *queue_group)
5400{
5401 unsigned int path;
5402 unsigned long flags;
5403 bool list_is_empty;
5404
5405 for (path = 0; path < 2; path++) {
5406 while (1) {
5407 spin_lock_irqsave(
5408 &queue_group->submit_lock[path], flags);
5409 list_is_empty =
5410 list_empty(&queue_group->request_list[path]);
5411 spin_unlock_irqrestore(
5412 &queue_group->submit_lock[path], flags);
5413 if (list_is_empty)
5414 break;
5415 pqi_check_ctrl_health(ctrl_info);
5416 if (pqi_ctrl_offline(ctrl_info))
5417 return -ENXIO;
5418 usleep_range(1000, 2000);
5419 }
5420 }
5421
5422 return 0;
5423}
5424
5425static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
5426{
5427 int rc;
5428 unsigned int i;
5429 unsigned int path;
5430 struct pqi_queue_group *queue_group;
5431 pqi_index_t iq_pi;
5432 pqi_index_t iq_ci;
5433
5434 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5435 queue_group = &ctrl_info->queue_groups[i];
5436
5437 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
5438 if (rc)
5439 return rc;
5440
5441 for (path = 0; path < 2; path++) {
5442 iq_pi = queue_group->iq_pi_copy[path];
5443
5444 while (1) {
dac12fbc 5445 iq_ci = readl(queue_group->iq_ci[path]);
7561a7e4
KB		 5446 if (iq_ci == iq_pi)
5447 break;
5448 pqi_check_ctrl_health(ctrl_info);
5449 if (pqi_ctrl_offline(ctrl_info))
5450 return -ENXIO;
5451 usleep_range(1000, 2000);
5452 }
5453 }
5454 }
5455
5456 return 0;
5457}
5458
5459static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5460 struct pqi_scsi_dev *device)
5461{
5462 unsigned int i;
5463 unsigned int path;
5464 struct pqi_queue_group *queue_group;
5465 unsigned long flags;
5466 struct pqi_io_request *io_request;
5467 struct pqi_io_request *next;
5468 struct scsi_cmnd *scmd;
5469 struct pqi_scsi_dev *scsi_device;
5470
5471 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5472 queue_group = &ctrl_info->queue_groups[i];
5473
5474 for (path = 0; path < 2; path++) {
5475 spin_lock_irqsave(
5476 &queue_group->submit_lock[path], flags);
5477
5478 list_for_each_entry_safe(io_request, next,
5479 &queue_group->request_list[path],
5480 request_list_entry) {
5481 scmd = io_request->scmd;
5482 if (!scmd)
5483 continue;
5484
5485 scsi_device = scmd->device->hostdata;
5486 if (scsi_device != device)
5487 continue;
5488
5489 list_del(&io_request->request_list_entry);
5490 set_host_byte(scmd, DID_RESET);
5491 pqi_scsi_done(scmd);
5492 }
5493
5494 spin_unlock_irqrestore(
5495 &queue_group->submit_lock[path], flags);
5496 }
5497 }
5498}
5499
4fd22c13
MR		 5500static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info)
5501{
5502 unsigned int i;
5503 unsigned int path;
5504 struct pqi_queue_group *queue_group;
5505 unsigned long flags;
5506 struct pqi_io_request *io_request;
5507 struct pqi_io_request *next;
5508 struct scsi_cmnd *scmd;
5509
5510 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5511 queue_group = &ctrl_info->queue_groups[i];
5512
5513 for (path = 0; path < 2; path++) {
5514 spin_lock_irqsave(&queue_group->submit_lock[path],
5515 flags);
5516
5517 list_for_each_entry_safe(io_request, next,
5518 &queue_group->request_list[path],
5519 request_list_entry) {
5520
5521 scmd = io_request->scmd;
5522 if (!scmd)
5523 continue;
5524
5525 list_del(&io_request->request_list_entry);
5526 set_host_byte(scmd, DID_RESET);
5527 pqi_scsi_done(scmd);
5528 }
5529
5530 spin_unlock_irqrestore(
5531 &queue_group->submit_lock[path], flags);
5532 }
5533 }
5534}
5535
061ef06a 5536static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
1e46731e 5537 struct pqi_scsi_dev *device, unsigned long timeout_secs)
061ef06a 5538{
1e46731e
MR		 5539 unsigned long timeout;
5540
4fd22c13 5541 timeout = (timeout_secs * PQI_HZ) + jiffies;
1e46731e 5542
061ef06a
KB		 5543 while (atomic_read(&device->scsi_cmds_outstanding)) {
5544 pqi_check_ctrl_health(ctrl_info);
5545 if (pqi_ctrl_offline(ctrl_info))
5546 return -ENXIO;
1e46731e
MR		 5547 if (timeout_secs != NO_TIMEOUT) {
5548 if (time_after(jiffies, timeout)) {
5549 dev_err(&ctrl_info->pci_dev->dev,
5550 "timed out waiting for pending IO\n");
5551 return -ETIMEDOUT;
5552 }
5553 }
061ef06a
KB		 5554 usleep_range(1000, 2000);
5555 }
5556
5557 return 0;
5558}
5559
4fd22c13
MR		 5560static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5561 unsigned long timeout_secs)
061ef06a
KB		 5562{
5563 bool io_pending;
5564 unsigned long flags;
4fd22c13 5565 unsigned long timeout;
061ef06a
KB		 5566 struct pqi_scsi_dev *device;
5567
4fd22c13 5568 timeout = (timeout_secs * PQI_HZ) + jiffies;
061ef06a
KB		 5569 while (1) {
5570 io_pending = false;
5571
5572 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5573 list_for_each_entry(device, &ctrl_info->scsi_device_list,
5574 scsi_device_list_entry) {
5575 if (atomic_read(&device->scsi_cmds_outstanding)) {
5576 io_pending = true;
5577 break;
5578 }
5579 }
5580 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5581 flags);
5582
5583 if (!io_pending)
5584 break;
5585
5586 pqi_check_ctrl_health(ctrl_info);
5587 if (pqi_ctrl_offline(ctrl_info))
5588 return -ENXIO;
5589
4fd22c13
MR		 5590 if (timeout_secs != NO_TIMEOUT) {
5591 if (time_after(jiffies, timeout)) {
5592 dev_err(&ctrl_info->pci_dev->dev,
5593 "timed out waiting for pending IO\n");
5594 return -ETIMEDOUT;
5595 }
5596 }
061ef06a
KB		 5597 usleep_range(1000, 2000);
5598 }
5599
5600 return 0;
5601}
5602
0530736e
KB		 5603static int pqi_ctrl_wait_for_pending_sync_cmds(struct pqi_ctrl_info *ctrl_info)
5604{
5605 while (atomic_read(&ctrl_info->sync_cmds_outstanding)) {
5606 pqi_check_ctrl_health(ctrl_info);
5607 if (pqi_ctrl_offline(ctrl_info))
5608 return -ENXIO;
5609 usleep_range(1000, 2000);
5610 }
5611
5612 return 0;
5613}
5614
14bb215d
KB		 5615static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
5616 void *context)
6c223761 5617{
14bb215d 5618 struct completion *waiting = context;
6c223761 5619
14bb215d
KB		 5620 complete(waiting);
5621}
6c223761 5622
bb9af08c 5623#define PQI_LUN_RESET_TIMEOUT_SECS 30
c2922f17 5624#define PQI_LUN_RESET_POLL_COMPLETION_SECS 10
14bb215d
KB		 5625
5626static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
5627 struct pqi_scsi_dev *device, struct completion *wait)
5628{
5629 int rc;
14bb215d
KB		 5630
5631 while (1) {
5632 if (wait_for_completion_io_timeout(wait,
c2922f17 5633 PQI_LUN_RESET_POLL_COMPLETION_SECS * PQI_HZ)) {
14bb215d
KB		 5634 rc = 0;
5635 break;
6c223761
KB		 5636 }
5637
14bb215d
KB		 5638 pqi_check_ctrl_health(ctrl_info);
5639 if (pqi_ctrl_offline(ctrl_info)) {
4e8415e3 5640 rc = -ENXIO;
14bb215d
KB		 5641 break;
5642 }
6c223761 5643 }
6c223761 5644
14bb215d 5645 return rc;
6c223761
KB		 5646}
5647
14bb215d 5648static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 5649 struct pqi_scsi_dev *device)
5650{
5651 int rc;
5652 struct pqi_io_request *io_request;
5653 DECLARE_COMPLETION_ONSTACK(wait);
5654 struct pqi_task_management_request *request;
5655
6c223761 5656 io_request = pqi_alloc_io_request(ctrl_info);
14bb215d 5657 io_request->io_complete_callback = pqi_lun_reset_complete;
6c223761
KB		 5658 io_request->context = &wait;
5659
5660 request = io_request->iu;
5661 memset(request, 0, sizeof(*request));
5662
5663 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
5664 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
5665 &request->header.iu_length);
5666 put_unaligned_le16(io_request->index, &request->request_id);
5667 memcpy(request->lun_number, device->scsi3addr,
5668 sizeof(request->lun_number));
5669 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
c2922f17
MB		 5670 if (ctrl_info->tmf_iu_timeout_supported)
5671 put_unaligned_le16(PQI_LUN_RESET_TIMEOUT_SECS,
5672 &request->timeout);
6c223761
KB		 5673
5674 pqi_start_io(ctrl_info,
5675 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
5676 io_request);
5677
14bb215d
KB		 5678 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
5679 if (rc == 0)
6c223761 5680 rc = io_request->status;
6c223761
KB		 5681
5682 pqi_free_io_request(io_request);
6c223761
KB		 5683
5684 return rc;
5685}
5686
429fab70
KB		 5687/* Performs a reset at the LUN level. */
5688
3406384b
MR		 5689#define PQI_LUN_RESET_RETRIES 3
5690#define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000
429fab70 5691#define PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS 120
6c223761 5692
4fd22c13 5693static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 5694 struct pqi_scsi_dev *device)
5695{
5696 int rc;
3406384b 5697 unsigned int retries;
4fd22c13 5698 unsigned long timeout_secs;
6c223761 5699
3406384b
MR		 5700 for (retries = 0;;) {
5701 rc = pqi_lun_reset(ctrl_info, device);
c2922f17 5702 if (rc == 0 || ++retries > PQI_LUN_RESET_RETRIES)
3406384b
MR		 5703 break;
5704 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
5705 }
429fab70
KB		 5706
5707 timeout_secs = rc ? PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS : NO_TIMEOUT;
4fd22c13
MR		 5708
5709 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs);
6c223761 5710
14bb215d 5711 return rc == 0 ? SUCCESS : FAILED;
6c223761
KB		 5712}
5713
4fd22c13
MR		 5714static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5715 struct pqi_scsi_dev *device)
5716{
5717 int rc;
5718
5719 mutex_lock(&ctrl_info->lun_reset_mutex);
5720
5721 pqi_ctrl_block_requests(ctrl_info);
5722 pqi_ctrl_wait_until_quiesced(ctrl_info);
5723 pqi_fail_io_queued_for_device(ctrl_info, device);
5724 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
5725 pqi_device_reset_start(device);
5726 pqi_ctrl_unblock_requests(ctrl_info);
5727
5728 if (rc)
5729 rc = FAILED;
5730 else
5731 rc = _pqi_device_reset(ctrl_info, device);
5732
5733 pqi_device_reset_done(device);
5734
5735 mutex_unlock(&ctrl_info->lun_reset_mutex);
429fab70 5736
4fd22c13
MR		 5737 return rc;
5738}
5739
6c223761
KB		 5740static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
5741{
5742 int rc;
7561a7e4 5743 struct Scsi_Host *shost;
6c223761
KB		 5744 struct pqi_ctrl_info *ctrl_info;
5745 struct pqi_scsi_dev *device;
5746
7561a7e4
KB		 5747 shost = scmd->device->host;
5748 ctrl_info = shost_to_hba(shost);
6c223761
KB		 5749 device = scmd->device->hostdata;
5750
5751 dev_err(&ctrl_info->pci_dev->dev,
5752 "resetting scsi %d:%d:%d:%d\n",
7561a7e4 5753 shost->host_no, device->bus, device->target, device->lun);
6c223761 5754
7561a7e4 5755 pqi_check_ctrl_health(ctrl_info);
0530736e
KB		 5756 if (pqi_ctrl_offline(ctrl_info) ||
5757 pqi_device_reset_blocked(ctrl_info)) {
7561a7e4
KB		 5758 rc = FAILED;
5759 goto out;
5760 }
6c223761 5761
4fd22c13 5762 pqi_wait_until_ofa_finished(ctrl_info);
7561a7e4 5763
0530736e 5764 atomic_inc(&ctrl_info->sync_cmds_outstanding);
4fd22c13 5765 rc = pqi_device_reset(ctrl_info, device);
0530736e 5766 atomic_dec(&ctrl_info->sync_cmds_outstanding);
429fab70 5767
7561a7e4 5768out:
6c223761
KB		 5769 dev_err(&ctrl_info->pci_dev->dev,
5770 "reset of scsi %d:%d:%d:%d: %s\n",
7561a7e4 5771 shost->host_no, device->bus, device->target, device->lun,
6c223761
KB		 5772 rc == SUCCESS ? "SUCCESS" : "FAILED");
5773
5774 return rc;
5775}
5776
5777static int pqi_slave_alloc(struct scsi_device *sdev)
5778{
5779 struct pqi_scsi_dev *device;
5780 unsigned long flags;
5781 struct pqi_ctrl_info *ctrl_info;
5782 struct scsi_target *starget;
5783 struct sas_rphy *rphy;
5784
5785 ctrl_info = shost_to_hba(sdev->host);
5786
5787 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5788
5789 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
5790 starget = scsi_target(sdev);
5791 rphy = target_to_rphy(starget);
5792 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
5793 if (device) {
5794 device->target = sdev_id(sdev);
5795 device->lun = sdev->lun;
5796 device->target_lun_valid = true;
5797 }
5798 } else {
5799 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
5800 sdev_id(sdev), sdev->lun);
5801 }
5802
94086f5b 5803 if (device) {
6c223761
KB		 5804 sdev->hostdata = device;
5805 device->sdev = sdev;
5806 if (device->queue_depth) {
5807 device->advertised_queue_depth = device->queue_depth;
5808 scsi_change_queue_depth(sdev,
5809 device->advertised_queue_depth);
5810 }
b6e2ef67
DC		 5811 if (pqi_is_logical_device(device))
5812 pqi_disable_write_same(sdev);
2b447f81
DC		 5813 else
5814 sdev->allow_restart = 1;
6c223761
KB		 5815 }
5816
5817 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5818
5819 return 0;
5820}
5821
52198226
CH		 5822static int pqi_map_queues(struct Scsi_Host *shost)
5823{
5824 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
5825
79d3fa9e 5826 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
ed76e329 5827 ctrl_info->pci_dev, 0);
52198226
CH		 5828}
5829
ce143793
KB		 5830static int pqi_slave_configure(struct scsi_device *sdev)
5831{
5832 struct pqi_scsi_dev *device;
5833
5834 device = sdev->hostdata;
5835 device->devtype = sdev->type;
5836
5837 return 0;
5838}
5839
4d15ad38
KB		 5840static void pqi_slave_destroy(struct scsi_device *sdev)
5841{
5842 unsigned long flags;
5843 struct pqi_scsi_dev *device;
5844 struct pqi_ctrl_info *ctrl_info;
5845
5846 ctrl_info = shost_to_hba(sdev->host);
5847
5848 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5849
5850 device = sdev->hostdata;
5851 if (device) {
5852 sdev->hostdata = NULL;
5853 if (!list_empty(&device->scsi_device_list_entry))
5854 list_del(&device->scsi_device_list_entry);
5855 }
5856
5857 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5858
5859 if (device) {
5860 pqi_dev_info(ctrl_info, "removed", device);
5861 pqi_free_device(device);
5862 }
5863}
5864
8b664fef 5865static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
6c223761
KB		 5866{
5867 struct pci_dev *pci_dev;
5868 u32 subsystem_vendor;
5869 u32 subsystem_device;
5870 cciss_pci_info_struct pciinfo;
5871
5872 if (!arg)
5873 return -EINVAL;
5874
5875 pci_dev = ctrl_info->pci_dev;
5876
5877 pciinfo.domain = pci_domain_nr(pci_dev->bus);
5878 pciinfo.bus = pci_dev->bus->number;
5879 pciinfo.dev_fn = pci_dev->devfn;
5880 subsystem_vendor = pci_dev->subsystem_vendor;
5881 subsystem_device = pci_dev->subsystem_device;
8b664fef 5882 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | subsystem_vendor;
6c223761
KB		 5883
5884 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
5885 return -EFAULT;
5886
5887 return 0;
5888}
5889
5890static int pqi_getdrivver_ioctl(void __user *arg)
5891{
5892 u32 version;
5893
5894 if (!arg)
5895 return -EINVAL;
5896
5897 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
5898 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
5899
5900 if (copy_to_user(arg, &version, sizeof(version)))
5901 return -EFAULT;
5902
5903 return 0;
5904}
5905
5906struct ciss_error_info {
5907 u8 scsi_status;
5908 int command_status;
5909 size_t sense_data_length;
5910};
5911
5912static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
5913 struct ciss_error_info *ciss_error_info)
5914{
5915 int ciss_cmd_status;
5916 size_t sense_data_length;
5917
5918 switch (pqi_error_info->data_out_result) {
5919 case PQI_DATA_IN_OUT_GOOD:
5920 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
5921 break;
5922 case PQI_DATA_IN_OUT_UNDERFLOW:
5923 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
5924 break;
5925 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
5926 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
5927 break;
5928 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
5929 case PQI_DATA_IN_OUT_BUFFER_ERROR:
5930 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
5931 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
5932 case PQI_DATA_IN_OUT_ERROR:
5933 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
5934 break;
5935 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
5936 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
5937 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
5938 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
5939 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
5940 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
5941 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
5942 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
5943 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
5944 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
5945 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
5946 break;
5947 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
5948 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
5949 break;
5950 case PQI_DATA_IN_OUT_ABORTED:
5951 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
5952 break;
5953 case PQI_DATA_IN_OUT_TIMEOUT:
5954 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
5955 break;
5956 default:
5957 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
5958 break;
5959 }
5960
5961 sense_data_length =
5962 get_unaligned_le16(&pqi_error_info->sense_data_length);
5963 if (sense_data_length == 0)
5964 sense_data_length =
5965 get_unaligned_le16(&pqi_error_info->response_data_length);
5966 if (sense_data_length)
5967 if (sense_data_length > sizeof(pqi_error_info->data))
5968 sense_data_length = sizeof(pqi_error_info->data);
5969
5970 ciss_error_info->scsi_status = pqi_error_info->status;
5971 ciss_error_info->command_status = ciss_cmd_status;
5972 ciss_error_info->sense_data_length = sense_data_length;
5973}
5974
5975static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
5976{
5977 int rc;
5978 char *kernel_buffer = NULL;
5979 u16 iu_length;
5980 size_t sense_data_length;
5981 IOCTL_Command_struct iocommand;
5982 struct pqi_raid_path_request request;
5983 struct pqi_raid_error_info pqi_error_info;
5984 struct ciss_error_info ciss_error_info;
5985
5986 if (pqi_ctrl_offline(ctrl_info))
5987 return -ENXIO;
5988 if (!arg)
5989 return -EINVAL;
5990 if (!capable(CAP_SYS_RAWIO))
5991 return -EPERM;
5992 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
5993 return -EFAULT;
5994 if (iocommand.buf_size < 1 &&
5995 iocommand.Request.Type.Direction != XFER_NONE)
5996 return -EINVAL;
5997 if (iocommand.Request.CDBLen > sizeof(request.cdb))
5998 return -EINVAL;
5999 if (iocommand.Request.Type.Type != TYPE_CMD)
6000 return -EINVAL;
6001
6002 switch (iocommand.Request.Type.Direction) {
6003 case XFER_NONE:
6004 case XFER_WRITE:
6005 case XFER_READ:
41555d54 6006 case XFER_READ | XFER_WRITE:
6c223761
KB		 6007 break;
6008 default:
6009 return -EINVAL;
6010 }
6011
6012 if (iocommand.buf_size > 0) {
6013 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
6014 if (!kernel_buffer)
6015 return -ENOMEM;
6016 if (iocommand.Request.Type.Direction & XFER_WRITE) {
6017 if (copy_from_user(kernel_buffer, iocommand.buf,
6018 iocommand.buf_size)) {
6019 rc = -EFAULT;
6020 goto out;
6021 }
6022 } else {
6023 memset(kernel_buffer, 0, iocommand.buf_size);
6024 }
6025 }
6026
6027 memset(&request, 0, sizeof(request));
6028
6029 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
6030 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
6031 PQI_REQUEST_HEADER_LENGTH;
6032 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
6033 sizeof(request.lun_number));
6034 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
6035 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
6036
6037 switch (iocommand.Request.Type.Direction) {
6038 case XFER_NONE:
6039 request.data_direction = SOP_NO_DIRECTION_FLAG;
6040 break;
6041 case XFER_WRITE:
6042 request.data_direction = SOP_WRITE_FLAG;
6043 break;
6044 case XFER_READ:
6045 request.data_direction = SOP_READ_FLAG;
6046 break;
41555d54
KB		 6047 case XFER_READ | XFER_WRITE:
6048 request.data_direction = SOP_BIDIRECTIONAL;
6049 break;
6c223761
KB		 6050 }
6051
6052 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
6053
6054 if (iocommand.buf_size > 0) {
6055 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
6056
6057 rc = pqi_map_single(ctrl_info->pci_dev,
6058 &request.sg_descriptors[0], kernel_buffer,
6917a9cc 6059 iocommand.buf_size, DMA_BIDIRECTIONAL);
6c223761
KB		 6060 if (rc)
6061 goto out;
6062
6063 iu_length += sizeof(request.sg_descriptors[0]);
6064 }
6065
6066 put_unaligned_le16(iu_length, &request.header.iu_length);
6067
21432010 6068 if (ctrl_info->raid_iu_timeout_supported)
6069 put_unaligned_le32(iocommand.Request.Timeout, &request.timeout);
6070
6c223761
KB		 6071 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6072 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
6073
6074 if (iocommand.buf_size > 0)
6075 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
6917a9cc 6076 DMA_BIDIRECTIONAL);
6c223761
KB		 6077
6078 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
6079
6080 if (rc == 0) {
6081 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
6082 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
6083 iocommand.error_info.CommandStatus =
6084 ciss_error_info.command_status;
6085 sense_data_length = ciss_error_info.sense_data_length;
6086 if (sense_data_length) {
6087 if (sense_data_length >
6088 sizeof(iocommand.error_info.SenseInfo))
6089 sense_data_length =
6090 sizeof(iocommand.error_info.SenseInfo);
6091 memcpy(iocommand.error_info.SenseInfo,
6092 pqi_error_info.data, sense_data_length);
6093 iocommand.error_info.SenseLen = sense_data_length;
6094 }
6095 }
6096
6097 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
6098 rc = -EFAULT;
6099 goto out;
6100 }
6101
6102 if (rc == 0 && iocommand.buf_size > 0 &&
6103 (iocommand.Request.Type.Direction & XFER_READ)) {
6104 if (copy_to_user(iocommand.buf, kernel_buffer,
6105 iocommand.buf_size)) {
6106 rc = -EFAULT;
6107 }
6108 }
6109
6110out:
6111 kfree(kernel_buffer);
6112
6113 return rc;
6114}
6115
6f4e626f
NC		 6116static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd,
6117 void __user *arg)
6c223761
KB		 6118{
6119 int rc;
6120 struct pqi_ctrl_info *ctrl_info;
6121
6122 ctrl_info = shost_to_hba(sdev->host);
6123
694c5d5b 6124 if (pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info))
4fd22c13
MR		 6125 return -EBUSY;
6126
6c223761
KB		 6127 switch (cmd) {
6128 case CCISS_DEREGDISK:
6129 case CCISS_REGNEWDISK:
6130 case CCISS_REGNEWD:
6131 rc = pqi_scan_scsi_devices(ctrl_info);
6132 break;
6133 case CCISS_GETPCIINFO:
6134 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
6135 break;
6136 case CCISS_GETDRIVVER:
6137 rc = pqi_getdrivver_ioctl(arg);
6138 break;
6139 case CCISS_PASSTHRU:
6140 rc = pqi_passthru_ioctl(ctrl_info, arg);
6141 break;
6142 default:
6143 rc = -EINVAL;
6144 break;
6145 }
6146
6147 return rc;
6148}
6149
6d90615f 6150static ssize_t pqi_firmware_version_show(struct device *dev,
6c223761
KB		 6151 struct device_attribute *attr, char *buffer)
6152{
6c223761
KB		 6153 struct Scsi_Host *shost;
6154 struct pqi_ctrl_info *ctrl_info;
6155
6156 shost = class_to_shost(dev);
6157 ctrl_info = shost_to_hba(shost);
6158
6d90615f
MB		 6159 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version);
6160}
6161
6162static ssize_t pqi_driver_version_show(struct device *dev,
6163 struct device_attribute *attr, char *buffer)
6164{
694c5d5b
KB		 6165 return snprintf(buffer, PAGE_SIZE, "%s\n",
6166 DRIVER_VERSION BUILD_TIMESTAMP);
6d90615f 6167}
6c223761 6168
6d90615f
MB		 6169static ssize_t pqi_serial_number_show(struct device *dev,
6170 struct device_attribute *attr, char *buffer)
6171{
6172 struct Scsi_Host *shost;
6173 struct pqi_ctrl_info *ctrl_info;
6174
6175 shost = class_to_shost(dev);
6176 ctrl_info = shost_to_hba(shost);
6177
6178 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number);
6179}
6180
6181static ssize_t pqi_model_show(struct device *dev,
6182 struct device_attribute *attr, char *buffer)
6183{
6184 struct Scsi_Host *shost;
6185 struct pqi_ctrl_info *ctrl_info;
6186
6187 shost = class_to_shost(dev);
6188 ctrl_info = shost_to_hba(shost);
6189
6190 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model);
6191}
6192
6193static ssize_t pqi_vendor_show(struct device *dev,
6194 struct device_attribute *attr, char *buffer)
6195{
6196 struct Scsi_Host *shost;
6197 struct pqi_ctrl_info *ctrl_info;
6198
6199 shost = class_to_shost(dev);
6200 ctrl_info = shost_to_hba(shost);
6201
6202 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor);
6c223761
KB		 6203}
6204
6205static ssize_t pqi_host_rescan_store(struct device *dev,
6206 struct device_attribute *attr, const char *buffer, size_t count)
6207{
6208 struct Scsi_Host *shost = class_to_shost(dev);
6209
6210 pqi_scan_start(shost);
6211
6212 return count;
6213}
6214
3c50976f
KB		 6215static ssize_t pqi_lockup_action_show(struct device *dev,
6216 struct device_attribute *attr, char *buffer)
6217{
6218 int count = 0;
6219 unsigned int i;
6220
6221 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6222 if (pqi_lockup_actions[i].action == pqi_lockup_action)
181aea89 6223 count += scnprintf(buffer + count, PAGE_SIZE - count,
3c50976f
KB		 6224 "[%s] ", pqi_lockup_actions[i].name);
6225 else
181aea89 6226 count += scnprintf(buffer + count, PAGE_SIZE - count,
3c50976f
KB		 6227 "%s ", pqi_lockup_actions[i].name);
6228 }
6229
181aea89 6230 count += scnprintf(buffer + count, PAGE_SIZE - count, "\n");
3c50976f
KB		 6231
6232 return count;
6233}
6234
6235static ssize_t pqi_lockup_action_store(struct device *dev,
6236 struct device_attribute *attr, const char *buffer, size_t count)
6237{
6238 unsigned int i;
6239 char *action_name;
6240 char action_name_buffer[32];
6241
6242 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
6243 action_name = strstrip(action_name_buffer);
6244
6245 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6246 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
6247 pqi_lockup_action = pqi_lockup_actions[i].action;
6248 return count;
6249 }
6250 }
6251
6252 return -EINVAL;
6253}
6254
6d90615f
MB		 6255static DEVICE_ATTR(driver_version, 0444, pqi_driver_version_show, NULL);
6256static DEVICE_ATTR(firmware_version, 0444, pqi_firmware_version_show, NULL);
6257static DEVICE_ATTR(model, 0444, pqi_model_show, NULL);
6258static DEVICE_ATTR(serial_number, 0444, pqi_serial_number_show, NULL);
6259static DEVICE_ATTR(vendor, 0444, pqi_vendor_show, NULL);
cbe0c7b1 6260static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
3c50976f
KB		 6261static DEVICE_ATTR(lockup_action, 0644,
6262 pqi_lockup_action_show, pqi_lockup_action_store);
6c223761
KB		 6263
6264static struct device_attribute *pqi_shost_attrs[] = {
6d90615f
MB		 6265 &dev_attr_driver_version,
6266 &dev_attr_firmware_version,
6267 &dev_attr_model,
6268 &dev_attr_serial_number,
6269 &dev_attr_vendor,
6c223761 6270 &dev_attr_rescan,
3c50976f 6271 &dev_attr_lockup_action,
6c223761
KB		 6272 NULL
6273};
6274
cd128244
DC		 6275static ssize_t pqi_unique_id_show(struct device *dev,
6276 struct device_attribute *attr, char *buffer)
6277{
6278 struct pqi_ctrl_info *ctrl_info;
6279 struct scsi_device *sdev;
6280 struct pqi_scsi_dev *device;
6281 unsigned long flags;
5b083b30 6282 u8 unique_id[16];
cd128244
DC		 6283
6284 sdev = to_scsi_device(dev);
6285 ctrl_info = shost_to_hba(sdev->host);
6286
6287 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6288
6289 device = sdev->hostdata;
6290 if (!device) {
8b664fef 6291 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
cd128244
DC		 6292 return -ENODEV;
6293 }
5b083b30
KB		 6294
6295 if (device->is_physical_device) {
6296 memset(unique_id, 0, 8);
6297 memcpy(unique_id + 8, &device->wwid, sizeof(device->wwid));
6298 } else {
6299 memcpy(unique_id, device->volume_id, sizeof(device->volume_id));
6300 }
cd128244
DC		 6301
6302 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6303
5995b236
MB		 6304 return snprintf(buffer, PAGE_SIZE,
6305 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n",
5b083b30
KB		 6306 unique_id[0], unique_id[1], unique_id[2], unique_id[3],
6307 unique_id[4], unique_id[5], unique_id[6], unique_id[7],
6308 unique_id[8], unique_id[9], unique_id[10], unique_id[11],
6309 unique_id[12], unique_id[13], unique_id[14], unique_id[15]);
cd128244
DC		 6310}
6311
6312static ssize_t pqi_lunid_show(struct device *dev,
6313 struct device_attribute *attr, char *buffer)
6314{
6315 struct pqi_ctrl_info *ctrl_info;
6316 struct scsi_device *sdev;
6317 struct pqi_scsi_dev *device;
6318 unsigned long flags;
6319 u8 lunid[8];
6320
6321 sdev = to_scsi_device(dev);
6322 ctrl_info = shost_to_hba(sdev->host);
6323
6324 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6325
6326 device = sdev->hostdata;
6327 if (!device) {
8b664fef 6328 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
cd128244
DC		 6329 return -ENODEV;
6330 }
694c5d5b 6331
cd128244
DC		 6332 memcpy(lunid, device->scsi3addr, sizeof(lunid));
6333
6334 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6335
6336 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
6337}
6338
694c5d5b
KB		 6339#define MAX_PATHS 8
6340
cd128244
DC		 6341static ssize_t pqi_path_info_show(struct device *dev,
6342 struct device_attribute *attr, char *buf)
6343{
6344 struct pqi_ctrl_info *ctrl_info;
6345 struct scsi_device *sdev;
6346 struct pqi_scsi_dev *device;
6347 unsigned long flags;
6348 int i;
6349 int output_len = 0;
6350 u8 box;
6351 u8 bay;
694c5d5b 6352 u8 path_map_index;
cd128244 6353 char *active;
694c5d5b 6354 u8 phys_connector[2];
cd128244
DC		 6355
6356 sdev = to_scsi_device(dev);
6357 ctrl_info = shost_to_hba(sdev->host);
6358
6359 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6360
6361 device = sdev->hostdata;
6362 if (!device) {
8b664fef 6363 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
cd128244
DC		 6364 return -ENODEV;
6365 }
6366
6367 bay = device->bay;
6368 for (i = 0; i < MAX_PATHS; i++) {
694c5d5b 6369 path_map_index = 1 << i;
cd128244
DC		 6370 if (i == device->active_path_index)
6371 active = "Active";
6372 else if (device->path_map & path_map_index)
6373 active = "Inactive";
6374 else
6375 continue;
6376
6377 output_len += scnprintf(buf + output_len,
6378 PAGE_SIZE - output_len,
6379 "[%d:%d:%d:%d] %20.20s ",
6380 ctrl_info->scsi_host->host_no,
6381 device->bus, device->target,
6382 device->lun,
6383 scsi_device_type(device->devtype));
6384
6385 if (device->devtype == TYPE_RAID ||
6386 pqi_is_logical_device(device))
6387 goto end_buffer;
6388
6389 memcpy(&phys_connector, &device->phys_connector[i],
6390 sizeof(phys_connector));
6391 if (phys_connector[0] < '0')
6392 phys_connector[0] = '0';
6393 if (phys_connector[1] < '0')
6394 phys_connector[1] = '0';
6395
6396 output_len += scnprintf(buf + output_len,
6397 PAGE_SIZE - output_len,
6398 "PORT: %.2s ", phys_connector);
6399
6400 box = device->box[i];
6401 if (box != 0 && box != 0xFF)
6402 output_len += scnprintf(buf + output_len,
6403 PAGE_SIZE - output_len,
6404 "BOX: %hhu ", box);
6405
6406 if ((device->devtype == TYPE_DISK ||
6407 device->devtype == TYPE_ZBC) &&
6408 pqi_expose_device(device))
6409 output_len += scnprintf(buf + output_len,
6410 PAGE_SIZE - output_len,
6411 "BAY: %hhu ", bay);
6412
6413end_buffer:
6414 output_len += scnprintf(buf + output_len,
6415 PAGE_SIZE - output_len,
6416 "%s\n", active);
6417 }
6418
6419 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
694c5d5b 6420
cd128244
DC		 6421 return output_len;
6422}
6423
6c223761
KB		 6424static ssize_t pqi_sas_address_show(struct device *dev,
6425 struct device_attribute *attr, char *buffer)
6426{
6427 struct pqi_ctrl_info *ctrl_info;
6428 struct scsi_device *sdev;
6429 struct pqi_scsi_dev *device;
6430 unsigned long flags;
6431 u64 sas_address;
6432
6433 sdev = to_scsi_device(dev);
6434 ctrl_info = shost_to_hba(sdev->host);
6435
6436 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6437
6438 device = sdev->hostdata;
8b664fef
KB		 6439 if (!device || !pqi_is_device_with_sas_address(device)) {
6440 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6c223761
KB		 6441 return -ENODEV;
6442 }
694c5d5b 6443
6c223761
KB		 6444 sas_address = device->sas_address;
6445
6446 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6447
6448 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
6449}
6450
6451static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
6452 struct device_attribute *attr, char *buffer)
6453{
6454 struct pqi_ctrl_info *ctrl_info;
6455 struct scsi_device *sdev;
6456 struct pqi_scsi_dev *device;
6457 unsigned long flags;
6458
6459 sdev = to_scsi_device(dev);
6460 ctrl_info = shost_to_hba(sdev->host);
6461
6462 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6463
6464 device = sdev->hostdata;
8b664fef
KB		 6465 if (!device) {
6466 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6467 return -ENODEV;
6468 }
6469
588a63fe 6470 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
6c223761
KB		 6471 buffer[1] = '\n';
6472 buffer[2] = '\0';
6473
6474 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6475
6476 return 2;
6477}
6478
a9f93392
KB		 6479static ssize_t pqi_raid_level_show(struct device *dev,
6480 struct device_attribute *attr, char *buffer)
6481{
6482 struct pqi_ctrl_info *ctrl_info;
6483 struct scsi_device *sdev;
6484 struct pqi_scsi_dev *device;
6485 unsigned long flags;
6486 char *raid_level;
6487
6488 sdev = to_scsi_device(dev);
6489 ctrl_info = shost_to_hba(sdev->host);
6490
6491 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6492
6493 device = sdev->hostdata;
8b664fef
KB		 6494 if (!device) {
6495 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6496 return -ENODEV;
6497 }
a9f93392
KB		 6498
6499 if (pqi_is_logical_device(device))
6500 raid_level = pqi_raid_level_to_string(device->raid_level);
6501 else
6502 raid_level = "N/A";
6503
6504 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6505
6506 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
6507}
6508
8b664fef
KB		 6509static ssize_t pqi_raid_bypass_cnt_show(struct device *dev,
6510 struct device_attribute *attr, char *buffer)
6511{
6512 struct pqi_ctrl_info *ctrl_info;
6513 struct scsi_device *sdev;
6514 struct pqi_scsi_dev *device;
6515 unsigned long flags;
6516 int raid_bypass_cnt;
6517
6518 sdev = to_scsi_device(dev);
6519 ctrl_info = shost_to_hba(sdev->host);
6520
6521 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6522
6523 device = sdev->hostdata;
6524 if (!device) {
6525 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6526 return -ENODEV;
6527 }
6528
6529 raid_bypass_cnt = atomic_read(&device->raid_bypass_cnt);
6530
6531 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6532
6533 return snprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt);
6534}
6535
cd128244
DC		 6536static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
6537static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
6538static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
cbe0c7b1 6539static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
8b664fef 6540static DEVICE_ATTR(ssd_smart_path_enabled, 0444, pqi_ssd_smart_path_enabled_show, NULL);
a9f93392 6541static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
8b664fef 6542static DEVICE_ATTR(raid_bypass_cnt, 0444, pqi_raid_bypass_cnt_show, NULL);
6c223761
KB		 6543
6544static struct device_attribute *pqi_sdev_attrs[] = {
cd128244
DC		 6545 &dev_attr_lunid,
6546 &dev_attr_unique_id,
6547 &dev_attr_path_info,
6c223761
KB		 6548 &dev_attr_sas_address,
6549 &dev_attr_ssd_smart_path_enabled,
a9f93392 6550 &dev_attr_raid_level,
8b664fef 6551 &dev_attr_raid_bypass_cnt,
6c223761
KB		 6552 NULL
6553};
6554
6555static struct scsi_host_template pqi_driver_template = {
6556 .module = THIS_MODULE,
6557 .name = DRIVER_NAME_SHORT,
6558 .proc_name = DRIVER_NAME_SHORT,
6559 .queuecommand = pqi_scsi_queue_command,
6560 .scan_start = pqi_scan_start,
6561 .scan_finished = pqi_scan_finished,
6562 .this_id = -1,
6c223761
KB		 6563 .eh_device_reset_handler = pqi_eh_device_reset_handler,
6564 .ioctl = pqi_ioctl,
6565 .slave_alloc = pqi_slave_alloc,
ce143793 6566 .slave_configure = pqi_slave_configure,
4d15ad38 6567 .slave_destroy = pqi_slave_destroy,
52198226 6568 .map_queues = pqi_map_queues,
6c223761
KB		 6569 .sdev_attrs = pqi_sdev_attrs,
6570 .shost_attrs = pqi_shost_attrs,
6571};
6572
6573static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
6574{
6575 int rc;
6576 struct Scsi_Host *shost;
6577
6578 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
6579 if (!shost) {
6580 dev_err(&ctrl_info->pci_dev->dev,
6581 "scsi_host_alloc failed for controller %u\n",
6582 ctrl_info->ctrl_id);
6583 return -ENOMEM;
6584 }
6585
6586 shost->io_port = 0;
6587 shost->n_io_port = 0;
6588 shost->this_id = -1;
6589 shost->max_channel = PQI_MAX_BUS;
6590 shost->max_cmd_len = MAX_COMMAND_SIZE;
6591 shost->max_lun = ~0;
6592 shost->max_id = ~0;
6593 shost->max_sectors = ctrl_info->max_sectors;
6594 shost->can_queue = ctrl_info->scsi_ml_can_queue;
6595 shost->cmd_per_lun = shost->can_queue;
6596 shost->sg_tablesize = ctrl_info->sg_tablesize;
6597 shost->transportt = pqi_sas_transport_template;
52198226 6598 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
6c223761
KB		 6599 shost->unique_id = shost->irq;
6600 shost->nr_hw_queues = ctrl_info->num_queue_groups;
6601 shost->hostdata[0] = (unsigned long)ctrl_info;
6602
6603 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
6604 if (rc) {
6605 dev_err(&ctrl_info->pci_dev->dev,
6606 "scsi_add_host failed for controller %u\n",
6607 ctrl_info->ctrl_id);
6608 goto free_host;
6609 }
6610
6611 rc = pqi_add_sas_host(shost, ctrl_info);
6612 if (rc) {
6613 dev_err(&ctrl_info->pci_dev->dev,
6614 "add SAS host failed for controller %u\n",
6615 ctrl_info->ctrl_id);
6616 goto remove_host;
6617 }
6618
6619 ctrl_info->scsi_host = shost;
6620
6621 return 0;
6622
6623remove_host:
6624 scsi_remove_host(shost);
6625free_host:
6626 scsi_host_put(shost);
6627
6628 return rc;
6629}
6630
6631static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
6632{
6633 struct Scsi_Host *shost;
6634
6635 pqi_delete_sas_host(ctrl_info);
6636
6637 shost = ctrl_info->scsi_host;
6638 if (!shost)
6639 return;
6640
6641 scsi_remove_host(shost);
6642 scsi_host_put(shost);
6643}
6644
336b6819
KB		 6645static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
6646{
6647 int rc = 0;
6648 struct pqi_device_registers __iomem *pqi_registers;
6649 unsigned long timeout;
6650 unsigned int timeout_msecs;
6651 union pqi_reset_register reset_reg;
6c223761 6652
336b6819
KB		 6653 pqi_registers = ctrl_info->pqi_registers;
6654 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
6655 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
6656
6657 while (1) {
6658 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
6659 reset_reg.all_bits = readl(&pqi_registers->device_reset);
6660 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
6661 break;
6662 pqi_check_ctrl_health(ctrl_info);
6663 if (pqi_ctrl_offline(ctrl_info)) {
6664 rc = -ENXIO;
6665 break;
6666 }
6667 if (time_after(jiffies, timeout)) {
6668 rc = -ETIMEDOUT;
6669 break;
6670 }
6671 }
6672
6673 return rc;
6674}
6c223761
KB		 6675
6676static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
6677{
6678 int rc;
336b6819
KB		 6679 union pqi_reset_register reset_reg;
6680
6681 if (ctrl_info->pqi_reset_quiesce_supported) {
6682 rc = sis_pqi_reset_quiesce(ctrl_info);
6683 if (rc) {
6684 dev_err(&ctrl_info->pci_dev->dev,
6685 "PQI reset failed during quiesce with error %d\n",
6686 rc);
6687 return rc;
6688 }
6689 }
6c223761 6690
336b6819
KB		 6691 reset_reg.all_bits = 0;
6692 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
6693 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
6c223761 6694
336b6819 6695 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
6c223761 6696
336b6819 6697 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
6c223761
KB		 6698 if (rc)
6699 dev_err(&ctrl_info->pci_dev->dev,
336b6819 6700 "PQI reset failed with error %d\n", rc);
6c223761
KB		 6701
6702 return rc;
6703}
6704
6d90615f
MB		 6705static int pqi_get_ctrl_serial_number(struct pqi_ctrl_info *ctrl_info)
6706{
6707 int rc;
6708 struct bmic_sense_subsystem_info *sense_info;
6709
6710 sense_info = kzalloc(sizeof(*sense_info), GFP_KERNEL);
6711 if (!sense_info)
6712 return -ENOMEM;
6713
6714 rc = pqi_sense_subsystem_info(ctrl_info, sense_info);
6715 if (rc)
6716 goto out;
6717
6718 memcpy(ctrl_info->serial_number, sense_info->ctrl_serial_number,
6719 sizeof(sense_info->ctrl_serial_number));
6720 ctrl_info->serial_number[sizeof(sense_info->ctrl_serial_number)] = '\0';
6721
6722out:
6723 kfree(sense_info);
6724
6725 return rc;
6726}
6727
6728static int pqi_get_ctrl_product_details(struct pqi_ctrl_info *ctrl_info)
6c223761
KB		 6729{
6730 int rc;
6731 struct bmic_identify_controller *identify;
6732
6733 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
6734 if (!identify)
6735 return -ENOMEM;
6736
6737 rc = pqi_identify_controller(ctrl_info, identify);
6738 if (rc)
6739 goto out;
6740
6741 memcpy(ctrl_info->firmware_version, identify->firmware_version,
6742 sizeof(identify->firmware_version));
6743 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
6744 snprintf(ctrl_info->firmware_version +
6745 strlen(ctrl_info->firmware_version),
6746 sizeof(ctrl_info->firmware_version),
6747 "-%u", get_unaligned_le16(&identify->firmware_build_number));
6748
6d90615f
MB		 6749 memcpy(ctrl_info->model, identify->product_id,
6750 sizeof(identify->product_id));
6751 ctrl_info->model[sizeof(identify->product_id)] = '\0';
6752
6753 memcpy(ctrl_info->vendor, identify->vendor_id,
6754 sizeof(identify->vendor_id));
6755 ctrl_info->vendor[sizeof(identify->vendor_id)] = '\0';
6756
6c223761
KB		 6757out:
6758 kfree(identify);
6759
6760 return rc;
6761}
6762
b212c251
KB		 6763struct pqi_config_table_section_info {
6764 struct pqi_ctrl_info *ctrl_info;
6765 void *section;
6766 u32 section_offset;
6767 void __iomem *section_iomem_addr;
6768};
6769
6770static inline bool pqi_is_firmware_feature_supported(
6771 struct pqi_config_table_firmware_features *firmware_features,
6772 unsigned int bit_position)
98f87667 6773{
b212c251 6774 unsigned int byte_index;
98f87667 6775
b212c251 6776 byte_index = bit_position / BITS_PER_BYTE;
98f87667 6777
b212c251
KB		 6778 if (byte_index >= le16_to_cpu(firmware_features->num_elements))
6779 return false;
98f87667 6780
b212c251
KB		 6781 return firmware_features->features_supported[byte_index] &
6782 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6783}
6784
6785static inline bool pqi_is_firmware_feature_enabled(
6786 struct pqi_config_table_firmware_features *firmware_features,
6787 void __iomem *firmware_features_iomem_addr,
6788 unsigned int bit_position)
6789{
6790 unsigned int byte_index;
6791 u8 __iomem *features_enabled_iomem_addr;
6792
6793 byte_index = (bit_position / BITS_PER_BYTE) +
6794 (le16_to_cpu(firmware_features->num_elements) * 2);
6795
6796 features_enabled_iomem_addr = firmware_features_iomem_addr +
6797 offsetof(struct pqi_config_table_firmware_features,
6798 features_supported) + byte_index;
6799
6800 return *((__force u8 *)features_enabled_iomem_addr) &
6801 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6802}
6803
6804static inline void pqi_request_firmware_feature(
6805 struct pqi_config_table_firmware_features *firmware_features,
6806 unsigned int bit_position)
6807{
6808 unsigned int byte_index;
6809
6810 byte_index = (bit_position / BITS_PER_BYTE) +
6811 le16_to_cpu(firmware_features->num_elements);
6812
6813 firmware_features->features_supported[byte_index] |=
6814 (1 << (bit_position % BITS_PER_BYTE));
6815}
6816
6817static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info,
6818 u16 first_section, u16 last_section)
6819{
6820 struct pqi_vendor_general_request request;
6821
6822 memset(&request, 0, sizeof(request));
6823
6824 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
6825 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
6826 &request.header.iu_length);
6827 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE,
6828 &request.function_code);
6829 put_unaligned_le16(first_section,
6830 &request.data.config_table_update.first_section);
6831 put_unaligned_le16(last_section,
6832 &request.data.config_table_update.last_section);
6833
6834 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6835 0, NULL, NO_TIMEOUT);
6836}
6837
6838static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info,
6839 struct pqi_config_table_firmware_features *firmware_features,
6840 void __iomem *firmware_features_iomem_addr)
6841{
6842 void *features_requested;
6843 void __iomem *features_requested_iomem_addr;
6844
6845 features_requested = firmware_features->features_supported +
6846 le16_to_cpu(firmware_features->num_elements);
6847
6848 features_requested_iomem_addr = firmware_features_iomem_addr +
6849 (features_requested - (void *)firmware_features);
6850
6851 memcpy_toio(features_requested_iomem_addr, features_requested,
6852 le16_to_cpu(firmware_features->num_elements));
6853
6854 return pqi_config_table_update(ctrl_info,
6855 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES,
6856 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES);
6857}
6858
6859struct pqi_firmware_feature {
6860 char *feature_name;
6861 unsigned int feature_bit;
6862 bool supported;
6863 bool enabled;
6864 void (*feature_status)(struct pqi_ctrl_info *ctrl_info,
6865 struct pqi_firmware_feature *firmware_feature);
6866};
6867
6868static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info,
6869 struct pqi_firmware_feature *firmware_feature)
6870{
6871 if (!firmware_feature->supported) {
6872 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n",
6873 firmware_feature->feature_name);
6874 return;
6875 }
6876
6877 if (firmware_feature->enabled) {
6878 dev_info(&ctrl_info->pci_dev->dev,
6879 "%s enabled\n", firmware_feature->feature_name);
6880 return;
6881 }
6882
6883 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n",
6884 firmware_feature->feature_name);
6885}
6886
21432010 6887static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info,
6888 struct pqi_firmware_feature *firmware_feature)
6889{
6890 switch (firmware_feature->feature_bit) {
6891 case PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE:
6892 ctrl_info->soft_reset_handshake_supported =
6893 firmware_feature->enabled;
6894 break;
6895 case PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT:
6896 ctrl_info->raid_iu_timeout_supported =
6897 firmware_feature->enabled;
6898 break;
c2922f17
MB		 6899 case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT:
6900 ctrl_info->tmf_iu_timeout_supported =
6901 firmware_feature->enabled;
6902 break;
21432010 6903 }
6904
6905 pqi_firmware_feature_status(ctrl_info, firmware_feature);
6906}
6907
b212c251
KB		 6908static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info,
6909 struct pqi_firmware_feature *firmware_feature)
6910{
6911 if (firmware_feature->feature_status)
6912 firmware_feature->feature_status(ctrl_info, firmware_feature);
6913}
6914
6915static DEFINE_MUTEX(pqi_firmware_features_mutex);
6916
6917static struct pqi_firmware_feature pqi_firmware_features[] = {
6918 {
6919 .feature_name = "Online Firmware Activation",
6920 .feature_bit = PQI_FIRMWARE_FEATURE_OFA,
6921 .feature_status = pqi_firmware_feature_status,
6922 },
6923 {
6924 .feature_name = "Serial Management Protocol",
6925 .feature_bit = PQI_FIRMWARE_FEATURE_SMP,
6926 .feature_status = pqi_firmware_feature_status,
6927 },
4fd22c13
MR		 6928 {
6929 .feature_name = "New Soft Reset Handshake",
6930 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE,
21432010 6931 .feature_status = pqi_ctrl_update_feature_flags,
6932 },
6933 {
6934 .feature_name = "RAID IU Timeout",
6935 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT,
6936 .feature_status = pqi_ctrl_update_feature_flags,
4fd22c13 6937 },
c2922f17
MB		 6938 {
6939 .feature_name = "TMF IU Timeout",
6940 .feature_bit = PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT,
6941 .feature_status = pqi_ctrl_update_feature_flags,
6942 },
b212c251
KB		 6943};
6944
6945static void pqi_process_firmware_features(
6946 struct pqi_config_table_section_info *section_info)
6947{
6948 int rc;
6949 struct pqi_ctrl_info *ctrl_info;
6950 struct pqi_config_table_firmware_features *firmware_features;
6951 void __iomem *firmware_features_iomem_addr;
6952 unsigned int i;
6953 unsigned int num_features_supported;
6954
6955 ctrl_info = section_info->ctrl_info;
6956 firmware_features = section_info->section;
6957 firmware_features_iomem_addr = section_info->section_iomem_addr;
6958
6959 for (i = 0, num_features_supported = 0;
6960 i < ARRAY_SIZE(pqi_firmware_features); i++) {
6961 if (pqi_is_firmware_feature_supported(firmware_features,
6962 pqi_firmware_features[i].feature_bit)) {
6963 pqi_firmware_features[i].supported = true;
6964 num_features_supported++;
6965 } else {
6966 pqi_firmware_feature_update(ctrl_info,
6967 &pqi_firmware_features[i]);
6968 }
6969 }
6970
6971 if (num_features_supported == 0)
6972 return;
6973
6974 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6975 if (!pqi_firmware_features[i].supported)
6976 continue;
6977 pqi_request_firmware_feature(firmware_features,
6978 pqi_firmware_features[i].feature_bit);
6979 }
6980
6981 rc = pqi_enable_firmware_features(ctrl_info, firmware_features,
6982 firmware_features_iomem_addr);
6983 if (rc) {
6984 dev_err(&ctrl_info->pci_dev->dev,
6985 "failed to enable firmware features in PQI configuration table\n");
6986 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6987 if (!pqi_firmware_features[i].supported)
6988 continue;
6989 pqi_firmware_feature_update(ctrl_info,
6990 &pqi_firmware_features[i]);
6991 }
6992 return;
6993 }
6994
6995 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6996 if (!pqi_firmware_features[i].supported)
6997 continue;
6998 if (pqi_is_firmware_feature_enabled(firmware_features,
6999 firmware_features_iomem_addr,
4fd22c13 7000 pqi_firmware_features[i].feature_bit)) {
b212c251 7001 pqi_firmware_features[i].enabled = true;
4fd22c13 7002 }
b212c251
KB		 7003 pqi_firmware_feature_update(ctrl_info,
7004 &pqi_firmware_features[i]);
7005 }
7006}
7007
7008static void pqi_init_firmware_features(void)
7009{
7010 unsigned int i;
7011
7012 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7013 pqi_firmware_features[i].supported = false;
7014 pqi_firmware_features[i].enabled = false;
7015 }
7016}
7017
7018static void pqi_process_firmware_features_section(
7019 struct pqi_config_table_section_info *section_info)
7020{
7021 mutex_lock(&pqi_firmware_features_mutex);
7022 pqi_init_firmware_features();
7023 pqi_process_firmware_features(section_info);
7024 mutex_unlock(&pqi_firmware_features_mutex);
7025}
7026
98f87667
KB		 7027static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
7028{
7029 u32 table_length;
7030 u32 section_offset;
7031 void __iomem *table_iomem_addr;
7032 struct pqi_config_table *config_table;
7033 struct pqi_config_table_section_header *section;
b212c251 7034 struct pqi_config_table_section_info section_info;
98f87667
KB		 7035
7036 table_length = ctrl_info->config_table_length;
b212c251
KB		 7037 if (table_length == 0)
7038 return 0;
98f87667
KB		 7039
7040 config_table = kmalloc(table_length, GFP_KERNEL);
7041 if (!config_table) {
7042 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 7043 "failed to allocate memory for PQI configuration table\n");
98f87667
KB		 7044 return -ENOMEM;
7045 }
7046
7047 /*
7048 * Copy the config table contents from I/O memory space into the
7049 * temporary buffer.
7050 */
7051 table_iomem_addr = ctrl_info->iomem_base +
7052 ctrl_info->config_table_offset;
7053 memcpy_fromio(config_table, table_iomem_addr, table_length);
7054
b212c251 7055 section_info.ctrl_info = ctrl_info;
98f87667
KB		 7056 section_offset =
7057 get_unaligned_le32(&config_table->first_section_offset);
7058
7059 while (section_offset) {
7060 section = (void *)config_table + section_offset;
7061
b212c251
KB		 7062 section_info.section = section;
7063 section_info.section_offset = section_offset;
7064 section_info.section_iomem_addr =
7065 table_iomem_addr + section_offset;
7066
98f87667 7067 switch (get_unaligned_le16(&section->section_id)) {
b212c251
KB		 7068 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES:
7069 pqi_process_firmware_features_section(&section_info);
7070 break;
98f87667 7071 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
5a259e32
KB		 7072 if (pqi_disable_heartbeat)
7073 dev_warn(&ctrl_info->pci_dev->dev,
7074 "heartbeat disabled by module parameter\n");
7075 else
7076 ctrl_info->heartbeat_counter =
7077 table_iomem_addr +
7078 section_offset +
7079 offsetof(
7080 struct pqi_config_table_heartbeat,
7081 heartbeat_counter);
98f87667 7082 break;
4fd22c13
MR		 7083 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET:
7084 ctrl_info->soft_reset_status =
7085 table_iomem_addr +
7086 section_offset +
7087 offsetof(struct pqi_config_table_soft_reset,
7088 soft_reset_status);
7089 break;
98f87667
KB		 7090 }
7091
7092 section_offset =
7093 get_unaligned_le16(&section->next_section_offset);
7094 }
7095
7096 kfree(config_table);
7097
7098 return 0;
7099}
7100
162d7753
KB		 7101/* Switches the controller from PQI mode back into SIS mode. */
7102
7103static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
7104{
7105 int rc;
7106
061ef06a 7107 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
162d7753
KB		 7108 rc = pqi_reset(ctrl_info);
7109 if (rc)
7110 return rc;
4f078e24
KB		 7111 rc = sis_reenable_sis_mode(ctrl_info);
7112 if (rc) {
7113 dev_err(&ctrl_info->pci_dev->dev,
7114 "re-enabling SIS mode failed with error %d\n", rc);
7115 return rc;
7116 }
162d7753
KB		 7117 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7118
7119 return 0;
7120}
7121
7122/*
7123 * If the controller isn't already in SIS mode, this function forces it into
7124 * SIS mode.
7125 */
7126
7127static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
ff6abb73
KB		 7128{
7129 if (!sis_is_firmware_running(ctrl_info))
7130 return -ENXIO;
7131
162d7753
KB		 7132 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
7133 return 0;
7134
7135 if (sis_is_kernel_up(ctrl_info)) {
7136 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7137 return 0;
ff6abb73
KB		 7138 }
7139
162d7753 7140 return pqi_revert_to_sis_mode(ctrl_info);
ff6abb73
KB		 7141}
7142
0530736e
KB		 7143#define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000
7144
6c223761
KB		 7145static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
7146{
7147 int rc;
7148
0530736e
KB		 7149 if (reset_devices) {
7150 sis_soft_reset(ctrl_info);
7151 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY);
7152 } else {
7153 rc = pqi_force_sis_mode(ctrl_info);
7154 if (rc)
7155 return rc;
7156 }
6c223761
KB		 7157
7158 /*
7159 * Wait until the controller is ready to start accepting SIS
7160 * commands.
7161 */
7162 rc = sis_wait_for_ctrl_ready(ctrl_info);
8845fdfa 7163 if (rc)
6c223761 7164 return rc;
6c223761
KB		 7165
7166 /*
7167 * Get the controller properties. This allows us to determine
7168 * whether or not it supports PQI mode.
7169 */
7170 rc = sis_get_ctrl_properties(ctrl_info);
7171 if (rc) {
7172 dev_err(&ctrl_info->pci_dev->dev,
7173 "error obtaining controller properties\n");
7174 return rc;
7175 }
7176
7177 rc = sis_get_pqi_capabilities(ctrl_info);
7178 if (rc) {
7179 dev_err(&ctrl_info->pci_dev->dev,
7180 "error obtaining controller capabilities\n");
7181 return rc;
7182 }
7183
d727a776
KB		 7184 if (reset_devices) {
7185 if (ctrl_info->max_outstanding_requests >
7186 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
7187 ctrl_info->max_outstanding_requests =
7188 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
7189 } else {
7190 if (ctrl_info->max_outstanding_requests >
7191 PQI_MAX_OUTSTANDING_REQUESTS)
7192 ctrl_info->max_outstanding_requests =
7193 PQI_MAX_OUTSTANDING_REQUESTS;
7194 }
6c223761
KB		 7195
7196 pqi_calculate_io_resources(ctrl_info);
7197
7198 rc = pqi_alloc_error_buffer(ctrl_info);
7199 if (rc) {
7200 dev_err(&ctrl_info->pci_dev->dev,
7201 "failed to allocate PQI error buffer\n");
7202 return rc;
7203 }
7204
7205 /*
7206 * If the function we are about to call succeeds, the
7207 * controller will transition from legacy SIS mode
7208 * into PQI mode.
7209 */
7210 rc = sis_init_base_struct_addr(ctrl_info);
7211 if (rc) {
7212 dev_err(&ctrl_info->pci_dev->dev,
7213 "error initializing PQI mode\n");
7214 return rc;
7215 }
7216
7217 /* Wait for the controller to complete the SIS -> PQI transition. */
7218 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
7219 if (rc) {
7220 dev_err(&ctrl_info->pci_dev->dev,
7221 "transition to PQI mode failed\n");
7222 return rc;
7223 }
7224
7225 /* From here on, we are running in PQI mode. */
7226 ctrl_info->pqi_mode_enabled = true;
ff6abb73 7227 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6c223761
KB		 7228
7229 rc = pqi_alloc_admin_queues(ctrl_info);
7230 if (rc) {
7231 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 7232 "failed to allocate admin queues\n");
6c223761
KB		 7233 return rc;
7234 }
7235
7236 rc = pqi_create_admin_queues(ctrl_info);
7237 if (rc) {
7238 dev_err(&ctrl_info->pci_dev->dev,
7239 "error creating admin queues\n");
7240 return rc;
7241 }
7242
7243 rc = pqi_report_device_capability(ctrl_info);
7244 if (rc) {
7245 dev_err(&ctrl_info->pci_dev->dev,
7246 "obtaining device capability failed\n");
7247 return rc;
7248 }
7249
7250 rc = pqi_validate_device_capability(ctrl_info);
7251 if (rc)
7252 return rc;
7253
7254 pqi_calculate_queue_resources(ctrl_info);
7255
7256 rc = pqi_enable_msix_interrupts(ctrl_info);
7257 if (rc)
7258 return rc;
7259
7260 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
7261 ctrl_info->max_msix_vectors =
7262 ctrl_info->num_msix_vectors_enabled;
7263 pqi_calculate_queue_resources(ctrl_info);
7264 }
7265
7266 rc = pqi_alloc_io_resources(ctrl_info);
7267 if (rc)
7268 return rc;
7269
7270 rc = pqi_alloc_operational_queues(ctrl_info);
d87d5474
KB		 7271 if (rc) {
7272 dev_err(&ctrl_info->pci_dev->dev,
7273 "failed to allocate operational queues\n");
6c223761 7274 return rc;
d87d5474 7275 }
6c223761
KB		 7276
7277 pqi_init_operational_queues(ctrl_info);
7278
7279 rc = pqi_request_irqs(ctrl_info);
7280 if (rc)
7281 return rc;
7282
6c223761
KB		 7283 rc = pqi_create_queues(ctrl_info);
7284 if (rc)
7285 return rc;
7286
061ef06a
KB		 7287 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7288
7289 ctrl_info->controller_online = true;
b212c251
KB		 7290
7291 rc = pqi_process_config_table(ctrl_info);
7292 if (rc)
7293 return rc;
7294
061ef06a 7295 pqi_start_heartbeat_timer(ctrl_info);
6c223761 7296
6a50d6ad 7297 rc = pqi_enable_events(ctrl_info);
6c223761
KB		 7298 if (rc) {
7299 dev_err(&ctrl_info->pci_dev->dev,
6a50d6ad 7300 "error enabling events\n");
6c223761
KB		 7301 return rc;
7302 }
7303
6c223761
KB		 7304 /* Register with the SCSI subsystem. */
7305 rc = pqi_register_scsi(ctrl_info);
7306 if (rc)
7307 return rc;
7308
6d90615f
MB		 7309 rc = pqi_get_ctrl_product_details(ctrl_info);
7310 if (rc) {
7311 dev_err(&ctrl_info->pci_dev->dev,
7312 "error obtaining product details\n");
7313 return rc;
7314 }
7315
7316 rc = pqi_get_ctrl_serial_number(ctrl_info);
6c223761
KB		 7317 if (rc) {
7318 dev_err(&ctrl_info->pci_dev->dev,
6d90615f 7319 "error obtaining ctrl serial number\n");
6c223761
KB		 7320 return rc;
7321 }
7322
171c2865
DC		 7323 rc = pqi_set_diag_rescan(ctrl_info);
7324 if (rc) {
7325 dev_err(&ctrl_info->pci_dev->dev,
7326 "error enabling multi-lun rescan\n");
7327 return rc;
7328 }
7329
6c223761
KB		 7330 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7331 if (rc) {
7332 dev_err(&ctrl_info->pci_dev->dev,
7333 "error updating host wellness\n");
7334 return rc;
7335 }
7336
7337 pqi_schedule_update_time_worker(ctrl_info);
7338
7339 pqi_scan_scsi_devices(ctrl_info);
7340
7341 return 0;
7342}
7343
061ef06a
KB		 7344static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
7345{
7346 unsigned int i;
7347 struct pqi_admin_queues *admin_queues;
7348 struct pqi_event_queue *event_queue;
7349
7350 admin_queues = &ctrl_info->admin_queues;
7351 admin_queues->iq_pi_copy = 0;
7352 admin_queues->oq_ci_copy = 0;
dac12fbc 7353 writel(0, admin_queues->oq_pi);
061ef06a
KB		 7354
7355 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
7356 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
7357 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
7358 ctrl_info->queue_groups[i].oq_ci_copy = 0;
7359
dac12fbc
KB		 7360 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]);
7361 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]);
7362 writel(0, ctrl_info->queue_groups[i].oq_pi);
061ef06a
KB		 7363 }
7364
7365 event_queue = &ctrl_info->event_queue;
dac12fbc 7366 writel(0, event_queue->oq_pi);
061ef06a
KB		 7367 event_queue->oq_ci_copy = 0;
7368}
7369
7370static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
7371{
7372 int rc;
7373
7374 rc = pqi_force_sis_mode(ctrl_info);
7375 if (rc)
7376 return rc;
7377
7378 /*
7379 * Wait until the controller is ready to start accepting SIS
7380 * commands.
7381 */
7382 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
7383 if (rc)
7384 return rc;
7385
4fd22c13
MR		 7386 /*
7387 * Get the controller properties. This allows us to determine
7388 * whether or not it supports PQI mode.
7389 */
7390 rc = sis_get_ctrl_properties(ctrl_info);
7391 if (rc) {
7392 dev_err(&ctrl_info->pci_dev->dev,
7393 "error obtaining controller properties\n");
7394 return rc;
7395 }
7396
7397 rc = sis_get_pqi_capabilities(ctrl_info);
7398 if (rc) {
7399 dev_err(&ctrl_info->pci_dev->dev,
7400 "error obtaining controller capabilities\n");
7401 return rc;
7402 }
7403
061ef06a
KB		 7404 /*
7405 * If the function we are about to call succeeds, the
7406 * controller will transition from legacy SIS mode
7407 * into PQI mode.
7408 */
7409 rc = sis_init_base_struct_addr(ctrl_info);
7410 if (rc) {
7411 dev_err(&ctrl_info->pci_dev->dev,
7412 "error initializing PQI mode\n");
7413 return rc;
7414 }
7415
7416 /* Wait for the controller to complete the SIS -> PQI transition. */
7417 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
7418 if (rc) {
7419 dev_err(&ctrl_info->pci_dev->dev,
7420 "transition to PQI mode failed\n");
7421 return rc;
7422 }
7423
7424 /* From here on, we are running in PQI mode. */
7425 ctrl_info->pqi_mode_enabled = true;
7426 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7427
7428 pqi_reinit_queues(ctrl_info);
7429
7430 rc = pqi_create_admin_queues(ctrl_info);
7431 if (rc) {
7432 dev_err(&ctrl_info->pci_dev->dev,
7433 "error creating admin queues\n");
7434 return rc;
7435 }
7436
7437 rc = pqi_create_queues(ctrl_info);
7438 if (rc)
7439 return rc;
7440
7441 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7442
7443 ctrl_info->controller_online = true;
061ef06a
KB		 7444 pqi_ctrl_unblock_requests(ctrl_info);
7445
4fd22c13
MR		 7446 rc = pqi_process_config_table(ctrl_info);
7447 if (rc)
7448 return rc;
7449
7450 pqi_start_heartbeat_timer(ctrl_info);
7451
061ef06a
KB		 7452 rc = pqi_enable_events(ctrl_info);
7453 if (rc) {
7454 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 7455 "error enabling events\n");
061ef06a
KB		 7456 return rc;
7457 }
7458
6d90615f 7459 rc = pqi_get_ctrl_product_details(ctrl_info);
4fd22c13
MR		 7460 if (rc) {
7461 dev_err(&ctrl_info->pci_dev->dev,
694c5d5b 7462 "error obtaining product details\n");
4fd22c13
MR		 7463 return rc;
7464 }
7465
171c2865
DC		 7466 rc = pqi_set_diag_rescan(ctrl_info);
7467 if (rc) {
7468 dev_err(&ctrl_info->pci_dev->dev,
7469 "error enabling multi-lun rescan\n");
7470 return rc;
7471 }
7472
061ef06a
KB		 7473 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7474 if (rc) {
7475 dev_err(&ctrl_info->pci_dev->dev,
7476 "error updating host wellness\n");
7477 return rc;
7478 }
7479
7480 pqi_schedule_update_time_worker(ctrl_info);
7481
7482 pqi_scan_scsi_devices(ctrl_info);
7483
7484 return 0;
7485}
7486
a81ed5f3
KB		 7487static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
7488 u16 timeout)
7489{
d20df83b
BOS		 7490 int rc;
7491
7492 rc = pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
a81ed5f3 7493 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
d20df83b
BOS		 7494
7495 return pcibios_err_to_errno(rc);
a81ed5f3
KB		 7496}
7497
6c223761
KB		 7498static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
7499{
7500 int rc;
7501 u64 mask;
7502
7503 rc = pci_enable_device(ctrl_info->pci_dev);
7504 if (rc) {
7505 dev_err(&ctrl_info->pci_dev->dev,
7506 "failed to enable PCI device\n");
7507 return rc;
7508 }
7509
7510 if (sizeof(dma_addr_t) > 4)
7511 mask = DMA_BIT_MASK(64);
7512 else
7513 mask = DMA_BIT_MASK(32);
7514
1d94f06e 7515 rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask);
6c223761
KB		 7516 if (rc) {
7517 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
7518 goto disable_device;
7519 }
7520
7521 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
7522 if (rc) {
7523 dev_err(&ctrl_info->pci_dev->dev,
7524 "failed to obtain PCI resources\n");
7525 goto disable_device;
7526 }
7527
4bdc0d67 7528 ctrl_info->iomem_base = ioremap(pci_resource_start(
6c223761
KB		 7529 ctrl_info->pci_dev, 0),
7530 sizeof(struct pqi_ctrl_registers));
7531 if (!ctrl_info->iomem_base) {
7532 dev_err(&ctrl_info->pci_dev->dev,
7533 "failed to map memory for controller registers\n");
7534 rc = -ENOMEM;
7535 goto release_regions;
7536 }
7537
a81ed5f3
KB		 7538#define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
7539
7540 /* Increase the PCIe completion timeout. */
7541 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
7542 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
7543 if (rc) {
7544 dev_err(&ctrl_info->pci_dev->dev,
7545 "failed to set PCIe completion timeout\n");
7546 goto release_regions;
7547 }
7548
6c223761
KB		 7549 /* Enable bus mastering. */
7550 pci_set_master(ctrl_info->pci_dev);
7551
cbe0c7b1
KB		 7552 ctrl_info->registers = ctrl_info->iomem_base;
7553 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
7554
6c223761
KB		 7555 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
7556
7557 return 0;
7558
7559release_regions:
7560 pci_release_regions(ctrl_info->pci_dev);
7561disable_device:
7562 pci_disable_device(ctrl_info->pci_dev);
7563
7564 return rc;
7565}
7566
7567static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
7568{
7569 iounmap(ctrl_info->iomem_base);
7570 pci_release_regions(ctrl_info->pci_dev);
cbe0c7b1
KB		 7571 if (pci_is_enabled(ctrl_info->pci_dev))
7572 pci_disable_device(ctrl_info->pci_dev);
6c223761
KB		 7573 pci_set_drvdata(ctrl_info->pci_dev, NULL);
7574}
7575
7576static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
7577{
7578 struct pqi_ctrl_info *ctrl_info;
7579
7580 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
7581 GFP_KERNEL, numa_node);
7582 if (!ctrl_info)
7583 return NULL;
7584
7585 mutex_init(&ctrl_info->scan_mutex);
7561a7e4 7586 mutex_init(&ctrl_info->lun_reset_mutex);
4fd22c13 7587 mutex_init(&ctrl_info->ofa_mutex);
6c223761
KB		 7588
7589 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
7590 spin_lock_init(&ctrl_info->scsi_device_list_lock);
7591
7592 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
7593 atomic_set(&ctrl_info->num_interrupts, 0);
0530736e 7594 atomic_set(&ctrl_info->sync_cmds_outstanding, 0);
6c223761
KB		 7595
7596 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
7597 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
7598
74a0f573 7599 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
5f310425 7600 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
98f87667 7601
6c223761
KB		 7602 sema_init(&ctrl_info->sync_request_sem,
7603 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
7561a7e4 7604 init_waitqueue_head(&ctrl_info->block_requests_wait);
6c223761 7605
376fb880
KB		 7606 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
7607 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
7608 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
7609 pqi_raid_bypass_retry_worker);
7610
6c223761 7611 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
061ef06a 7612 ctrl_info->irq_mode = IRQ_MODE_NONE;
6c223761
KB		 7613 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
7614
7615 return ctrl_info;
7616}
7617
7618static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
7619{
7620 kfree(ctrl_info);
7621}
7622
7623static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
7624{
98bf061b
KB		 7625 pqi_free_irqs(ctrl_info);
7626 pqi_disable_msix_interrupts(ctrl_info);
6c223761
KB		 7627}
7628
7629static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
7630{
7631 pqi_stop_heartbeat_timer(ctrl_info);
7632 pqi_free_interrupts(ctrl_info);
7633 if (ctrl_info->queue_memory_base)
7634 dma_free_coherent(&ctrl_info->pci_dev->dev,
7635 ctrl_info->queue_memory_length,
7636 ctrl_info->queue_memory_base,
7637 ctrl_info->queue_memory_base_dma_handle);
7638 if (ctrl_info->admin_queue_memory_base)
7639 dma_free_coherent(&ctrl_info->pci_dev->dev,
7640 ctrl_info->admin_queue_memory_length,
7641 ctrl_info->admin_queue_memory_base,
7642 ctrl_info->admin_queue_memory_base_dma_handle);
7643 pqi_free_all_io_requests(ctrl_info);
7644 if (ctrl_info->error_buffer)
7645 dma_free_coherent(&ctrl_info->pci_dev->dev,
7646 ctrl_info->error_buffer_length,
7647 ctrl_info->error_buffer,
7648 ctrl_info->error_buffer_dma_handle);
7649 if (ctrl_info->iomem_base)
7650 pqi_cleanup_pci_init(ctrl_info);
7651 pqi_free_ctrl_info(ctrl_info);
7652}
7653
7654static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
7655{
061ef06a
KB		 7656 pqi_cancel_rescan_worker(ctrl_info);
7657 pqi_cancel_update_time_worker(ctrl_info);
e57a1f9b 7658 pqi_unregister_scsi(ctrl_info);
162d7753
KB		 7659 if (ctrl_info->pqi_mode_enabled)
7660 pqi_revert_to_sis_mode(ctrl_info);
6c223761
KB		 7661 pqi_free_ctrl_resources(ctrl_info);
7662}
7663
4fd22c13
MR		 7664static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info)
7665{
7666 pqi_cancel_update_time_worker(ctrl_info);
7667 pqi_cancel_rescan_worker(ctrl_info);
7668 pqi_wait_until_lun_reset_finished(ctrl_info);
7669 pqi_wait_until_scan_finished(ctrl_info);
7670 pqi_ctrl_ofa_start(ctrl_info);
7671 pqi_ctrl_block_requests(ctrl_info);
7672 pqi_ctrl_wait_until_quiesced(ctrl_info);
7673 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS);
7674 pqi_fail_io_queued_for_all_devices(ctrl_info);
7675 pqi_wait_until_inbound_queues_empty(ctrl_info);
7676 pqi_stop_heartbeat_timer(ctrl_info);
7677 ctrl_info->pqi_mode_enabled = false;
7678 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7679}
7680
7681static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info)
7682{
7683 pqi_ofa_free_host_buffer(ctrl_info);
7684 ctrl_info->pqi_mode_enabled = true;
7685 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7686 ctrl_info->controller_online = true;
7687 pqi_ctrl_unblock_requests(ctrl_info);
7688 pqi_start_heartbeat_timer(ctrl_info);
7689 pqi_schedule_update_time_worker(ctrl_info);
7690 pqi_clear_soft_reset_status(ctrl_info,
7691 PQI_SOFT_RESET_ABORT);
7692 pqi_scan_scsi_devices(ctrl_info);
7693}
7694
7695static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info,
7696 u32 total_size, u32 chunk_size)
7697{
7698 u32 sg_count;
7699 u32 size;
7700 int i;
7701 struct pqi_sg_descriptor *mem_descriptor = NULL;
7702 struct device *dev;
7703 struct pqi_ofa_memory *ofap;
7704
7705 dev = &ctrl_info->pci_dev->dev;
7706
7707 sg_count = (total_size + chunk_size - 1);
e52c9e07 7708 sg_count /= chunk_size;
4fd22c13
MR		 7709
7710 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7711
7712 if (sg_count*chunk_size < total_size)
7713 goto out;
7714
7715 ctrl_info->pqi_ofa_chunk_virt_addr =
7716 kcalloc(sg_count, sizeof(void *), GFP_KERNEL);
7717 if (!ctrl_info->pqi_ofa_chunk_virt_addr)
7718 goto out;
7719
7720 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) {
7721 dma_addr_t dma_handle;
7722
7723 ctrl_info->pqi_ofa_chunk_virt_addr[i] =
750afb08
LC		 7724 dma_alloc_coherent(dev, chunk_size, &dma_handle,
7725 GFP_KERNEL);
4fd22c13
MR		 7726
7727 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i])
7728 break;
7729
7730 mem_descriptor = &ofap->sg_descriptor[i];
7731 put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address);
7732 put_unaligned_le32 (chunk_size, &mem_descriptor->length);
7733 }
7734
7735 if (!size || size < total_size)
7736 goto out_free_chunks;
7737
7738 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags);
7739 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors);
7740 put_unaligned_le32(size, &ofap->bytes_allocated);
7741
7742 return 0;
7743
7744out_free_chunks:
7745 while (--i >= 0) {
7746 mem_descriptor = &ofap->sg_descriptor[i];
7747 dma_free_coherent(dev, chunk_size,
7748 ctrl_info->pqi_ofa_chunk_virt_addr[i],
7749 get_unaligned_le64(&mem_descriptor->address));
7750 }
7751 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
7752
7753out:
7754 put_unaligned_le32 (0, &ofap->bytes_allocated);
7755 return -ENOMEM;
7756}
7757
7758static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info)
7759{
7760 u32 total_size;
7761 u32 min_chunk_size;
7762 u32 chunk_sz;
7763
7764 total_size = le32_to_cpu(
7765 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated);
7766 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS;
7767
7768 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2)
7769 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz))
7770 return 0;
7771
7772 return -ENOMEM;
7773}
7774
7775static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
7776 u32 bytes_requested)
7777{
7778 struct pqi_ofa_memory *pqi_ofa_memory;
7779 struct device *dev;
7780
7781 dev = &ctrl_info->pci_dev->dev;
750afb08
LC		 7782 pqi_ofa_memory = dma_alloc_coherent(dev,
7783 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH,
7784 &ctrl_info->pqi_ofa_mem_dma_handle,
7785 GFP_KERNEL);
4fd22c13
MR		 7786
7787 if (!pqi_ofa_memory)
7788 return;
7789
7790 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version);
7791 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE,
7792 sizeof(pqi_ofa_memory->signature));
7793 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested);
7794
7795 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory;
7796
7797 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) {
7798 dev_err(dev, "Failed to allocate host buffer of size = %u",
7799 bytes_requested);
7800 }
694c5d5b
KB		 7801
7802 return;
4fd22c13
MR		 7803}
7804
7805static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info)
7806{
7807 int i;
7808 struct pqi_sg_descriptor *mem_descriptor;
7809 struct pqi_ofa_memory *ofap;
7810
7811 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7812
7813 if (!ofap)
7814 return;
7815
7816 if (!ofap->bytes_allocated)
7817 goto out;
7818
7819 mem_descriptor = ofap->sg_descriptor;
7820
7821 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors);
7822 i++) {
7823 dma_free_coherent(&ctrl_info->pci_dev->dev,
7824 get_unaligned_le32(&mem_descriptor[i].length),
7825 ctrl_info->pqi_ofa_chunk_virt_addr[i],
7826 get_unaligned_le64(&mem_descriptor[i].address));
7827 }
7828 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
7829
7830out:
7831 dma_free_coherent(&ctrl_info->pci_dev->dev,
7832 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap,
7833 ctrl_info->pqi_ofa_mem_dma_handle);
7834 ctrl_info->pqi_ofa_mem_virt_addr = NULL;
7835}
7836
7837static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info)
7838{
7839 struct pqi_vendor_general_request request;
7840 size_t size;
7841 struct pqi_ofa_memory *ofap;
7842
7843 memset(&request, 0, sizeof(request));
7844
7845 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7846
7847 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
7848 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
7849 &request.header.iu_length);
7850 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE,
7851 &request.function_code);
7852
7853 if (ofap) {
7854 size = offsetof(struct pqi_ofa_memory, sg_descriptor) +
7855 get_unaligned_le16(&ofap->num_memory_descriptors) *
7856 sizeof(struct pqi_sg_descriptor);
7857
7858 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle,
7859 &request.data.ofa_memory_allocation.buffer_address);
7860 put_unaligned_le32(size,
7861 &request.data.ofa_memory_allocation.buffer_length);
7862
7863 }
7864
7865 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
7866 0, NULL, NO_TIMEOUT);
7867}
7868
4fd22c13
MR		 7869static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info)
7870{
7871 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY);
7872 return pqi_ctrl_init_resume(ctrl_info);
7873}
7874
3c50976f
KB		 7875static void pqi_perform_lockup_action(void)
7876{
7877 switch (pqi_lockup_action) {
7878 case PANIC:
7879 panic("FATAL: Smart Family Controller lockup detected");
7880 break;
7881 case REBOOT:
7882 emergency_restart();
7883 break;
7884 case NONE:
7885 default:
7886 break;
7887 }
7888}
7889
5f310425
KB		 7890static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
7891 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
7892 .status = SAM_STAT_CHECK_CONDITION,
7893};
7894
7895static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 7896{
7897 unsigned int i;
376fb880 7898 struct pqi_io_request *io_request;
376fb880
KB		 7899 struct scsi_cmnd *scmd;
7900
5f310425
KB		 7901 for (i = 0; i < ctrl_info->max_io_slots; i++) {
7902 io_request = &ctrl_info->io_request_pool[i];
7903 if (atomic_read(&io_request->refcount) == 0)
7904 continue;
376fb880 7905
5f310425
KB		 7906 scmd = io_request->scmd;
7907 if (scmd) {
7908 set_host_byte(scmd, DID_NO_CONNECT);
7909 } else {
7910 io_request->status = -ENXIO;
7911 io_request->error_info =
7912 &pqi_ctrl_offline_raid_error_info;
376fb880 7913 }
5f310425
KB		 7914
7915 io_request->io_complete_callback(io_request,
7916 io_request->context);
376fb880
KB		 7917 }
7918}
7919
5f310425 7920static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
376fb880 7921{
5f310425
KB		 7922 pqi_perform_lockup_action();
7923 pqi_stop_heartbeat_timer(ctrl_info);
7924 pqi_free_interrupts(ctrl_info);
7925 pqi_cancel_rescan_worker(ctrl_info);
7926 pqi_cancel_update_time_worker(ctrl_info);
7927 pqi_ctrl_wait_until_quiesced(ctrl_info);
7928 pqi_fail_all_outstanding_requests(ctrl_info);
7929 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
7930 pqi_ctrl_unblock_requests(ctrl_info);
7931}
7932
7933static void pqi_ctrl_offline_worker(struct work_struct *work)
7934{
7935 struct pqi_ctrl_info *ctrl_info;
7936
7937 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
7938 pqi_take_ctrl_offline_deferred(ctrl_info);
376fb880
KB		 7939}
7940
7941static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
7942{
5f310425
KB		 7943 if (!ctrl_info->controller_online)
7944 return;
7945
376fb880 7946 ctrl_info->controller_online = false;
5f310425
KB		 7947 ctrl_info->pqi_mode_enabled = false;
7948 pqi_ctrl_block_requests(ctrl_info);
5a259e32
KB		 7949 if (!pqi_disable_ctrl_shutdown)
7950 sis_shutdown_ctrl(ctrl_info);
376fb880
KB		 7951 pci_disable_device(ctrl_info->pci_dev);
7952 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
5f310425 7953 schedule_work(&ctrl_info->ctrl_offline_work);
376fb880
KB		 7954}
7955
d91d7820 7956static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
6c223761
KB		 7957 const struct pci_device_id *id)
7958{
7959 char *ctrl_description;
7960
37b36847 7961 if (id->driver_data)
6c223761 7962 ctrl_description = (char *)id->driver_data;
37b36847
KB		 7963 else
7964 ctrl_description = "Microsemi Smart Family Controller";
6c223761 7965
d91d7820 7966 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
6c223761
KB		 7967}
7968
d91d7820
KB		 7969static int pqi_pci_probe(struct pci_dev *pci_dev,
7970 const struct pci_device_id *id)
6c223761
KB		 7971{
7972 int rc;
62dc51fb 7973 int node, cp_node;
6c223761
KB		 7974 struct pqi_ctrl_info *ctrl_info;
7975
d91d7820 7976 pqi_print_ctrl_info(pci_dev, id);
6c223761
KB		 7977
7978 if (pqi_disable_device_id_wildcards &&
7979 id->subvendor == PCI_ANY_ID &&
7980 id->subdevice == PCI_ANY_ID) {
d91d7820 7981 dev_warn(&pci_dev->dev,
6c223761
KB		 7982 "controller not probed because device ID wildcards are disabled\n");
7983 return -ENODEV;
7984 }
7985
7986 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
d91d7820 7987 dev_warn(&pci_dev->dev,
6c223761
KB		 7988 "controller device ID matched using wildcards\n");
7989
d91d7820 7990 node = dev_to_node(&pci_dev->dev);
62dc51fb
SB		 7991 if (node == NUMA_NO_NODE) {
7992 cp_node = cpu_to_node(0);
7993 if (cp_node == NUMA_NO_NODE)
7994 cp_node = 0;
7995 set_dev_node(&pci_dev->dev, cp_node);
7996 }
6c223761
KB		 7997
7998 ctrl_info = pqi_alloc_ctrl_info(node);
7999 if (!ctrl_info) {
d91d7820 8000 dev_err(&pci_dev->dev,
6c223761
KB		 8001 "failed to allocate controller info block\n");
8002 return -ENOMEM;
8003 }
8004
d91d7820 8005 ctrl_info->pci_dev = pci_dev;
6c223761
KB		 8006
8007 rc = pqi_pci_init(ctrl_info);
8008 if (rc)
8009 goto error;
8010
8011 rc = pqi_ctrl_init(ctrl_info);
8012 if (rc)
8013 goto error;
8014
8015 return 0;
8016
8017error:
8018 pqi_remove_ctrl(ctrl_info);
8019
8020 return rc;
8021}
8022
d91d7820 8023static void pqi_pci_remove(struct pci_dev *pci_dev)
6c223761
KB		 8024{
8025 struct pqi_ctrl_info *ctrl_info;
8026
d91d7820 8027 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 8028 if (!ctrl_info)
8029 return;
8030
8031 pqi_remove_ctrl(ctrl_info);
8032}
8033
0530736e
KB		 8034static void pqi_crash_if_pending_command(struct pqi_ctrl_info *ctrl_info)
8035{
8036 unsigned int i;
8037 struct pqi_io_request *io_request;
8038 struct scsi_cmnd *scmd;
8039
8040 for (i = 0; i < ctrl_info->max_io_slots; i++) {
8041 io_request = &ctrl_info->io_request_pool[i];
8042 if (atomic_read(&io_request->refcount) == 0)
8043 continue;
8044 scmd = io_request->scmd;
8045 WARN_ON(scmd != NULL); /* IO command from SML */
8046 WARN_ON(scmd == NULL); /* Non-IO cmd or driver initiated*/
8047 }
8048}
8049
d91d7820 8050static void pqi_shutdown(struct pci_dev *pci_dev)
6c223761
KB		 8051{
8052 int rc;
8053 struct pqi_ctrl_info *ctrl_info;
8054
d91d7820 8055 ctrl_info = pci_get_drvdata(pci_dev);
0530736e
KB		 8056 if (!ctrl_info) {
8057 dev_err(&pci_dev->dev,
8058 "cache could not be flushed\n");
8059 return;
8060 }
8061
8062 pqi_disable_events(ctrl_info);
8063 pqi_wait_until_ofa_finished(ctrl_info);
8064 pqi_cancel_update_time_worker(ctrl_info);
8065 pqi_cancel_rescan_worker(ctrl_info);
8066 pqi_cancel_event_worker(ctrl_info);
8067
8068 pqi_ctrl_shutdown_start(ctrl_info);
8069 pqi_ctrl_wait_until_quiesced(ctrl_info);
8070
8071 rc = pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT);
8072 if (rc) {
8073 dev_err(&pci_dev->dev,
8074 "wait for pending I/O failed\n");
8075 return;
8076 }
8077
8078 pqi_ctrl_block_device_reset(ctrl_info);
8079 pqi_wait_until_lun_reset_finished(ctrl_info);
6c223761
KB		 8080
8081 /*
8082 * Write all data in the controller's battery-backed cache to
8083 * storage.
8084 */
58322fe0 8085 rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
0530736e
KB		 8086 if (rc)
8087 dev_err(&pci_dev->dev,
8088 "unable to flush controller cache\n");
8089
8090 pqi_ctrl_block_requests(ctrl_info);
8091
8092 rc = pqi_ctrl_wait_for_pending_sync_cmds(ctrl_info);
8093 if (rc) {
8094 dev_err(&pci_dev->dev,
8095 "wait for pending sync cmds failed\n");
6c223761 8096 return;
0530736e
KB		 8097 }
8098
8099 pqi_crash_if_pending_command(ctrl_info);
8100 pqi_reset(ctrl_info);
6c223761
KB		 8101}
8102
3c50976f
KB		 8103static void pqi_process_lockup_action_param(void)
8104{
8105 unsigned int i;
8106
8107 if (!pqi_lockup_action_param)
8108 return;
8109
8110 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
8111 if (strcmp(pqi_lockup_action_param,
8112 pqi_lockup_actions[i].name) == 0) {
8113 pqi_lockup_action = pqi_lockup_actions[i].action;
8114 return;
8115 }
8116 }
8117
8118 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
8119 DRIVER_NAME_SHORT, pqi_lockup_action_param);
8120}
8121
8122static void pqi_process_module_params(void)
8123{
8124 pqi_process_lockup_action_param();
8125}
8126
5c146686 8127static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
061ef06a
KB		 8128{
8129 struct pqi_ctrl_info *ctrl_info;
8130
8131 ctrl_info = pci_get_drvdata(pci_dev);
8132
8133 pqi_disable_events(ctrl_info);
8134 pqi_cancel_update_time_worker(ctrl_info);
8135 pqi_cancel_rescan_worker(ctrl_info);
8136 pqi_wait_until_scan_finished(ctrl_info);
8137 pqi_wait_until_lun_reset_finished(ctrl_info);
4fd22c13 8138 pqi_wait_until_ofa_finished(ctrl_info);
58322fe0 8139 pqi_flush_cache(ctrl_info, SUSPEND);
061ef06a
KB		 8140 pqi_ctrl_block_requests(ctrl_info);
8141 pqi_ctrl_wait_until_quiesced(ctrl_info);
8142 pqi_wait_until_inbound_queues_empty(ctrl_info);
4fd22c13 8143 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT);
061ef06a
KB		 8144 pqi_stop_heartbeat_timer(ctrl_info);
8145
8146 if (state.event == PM_EVENT_FREEZE)
8147 return 0;
8148
8149 pci_save_state(pci_dev);
8150 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
8151
8152 ctrl_info->controller_online = false;
8153 ctrl_info->pqi_mode_enabled = false;
8154
8155 return 0;
8156}
8157
5c146686 8158static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
061ef06a
KB		 8159{
8160 int rc;
8161 struct pqi_ctrl_info *ctrl_info;
8162
8163 ctrl_info = pci_get_drvdata(pci_dev);
8164
8165 if (pci_dev->current_state != PCI_D0) {
8166 ctrl_info->max_hw_queue_index = 0;
8167 pqi_free_interrupts(ctrl_info);
8168 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
8169 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
8170 IRQF_SHARED, DRIVER_NAME_SHORT,
8171 &ctrl_info->queue_groups[0]);
8172 if (rc) {
8173 dev_err(&ctrl_info->pci_dev->dev,
8174 "irq %u init failed with error %d\n",
8175 pci_dev->irq, rc);
8176 return rc;
8177 }
8178 pqi_start_heartbeat_timer(ctrl_info);
8179 pqi_ctrl_unblock_requests(ctrl_info);
8180 return 0;
8181 }
8182
8183 pci_set_power_state(pci_dev, PCI_D0);
8184 pci_restore_state(pci_dev);
8185
8186 return pqi_ctrl_init_resume(ctrl_info);
8187}
8188
6c223761
KB		 8189/* Define the PCI IDs for the controllers that we support. */
8190static const struct pci_device_id pqi_pci_id_table[] = {
b0f9408b
KB		 8191 {
8192 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8193 0x105b, 0x1211)
8194 },
8195 {
8196 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8197 0x105b, 0x1321)
8198 },
7eddabff
KB		 8199 {
8200 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8201 0x152d, 0x8a22)
8202 },
8203 {
8204 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8205 0x152d, 0x8a23)
8206 },
8207 {
8208 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8209 0x152d, 0x8a24)
8210 },
8211 {
8212 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8213 0x152d, 0x8a36)
8214 },
8215 {
8216 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8217 0x152d, 0x8a37)
8218 },
0595a0b4
AK		 8219 {
8220 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8221 0x193d, 0x1104)
8222 },
8223 {
8224 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8225 0x193d, 0x1105)
8226 },
8227 {
8228 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8229 0x193d, 0x1106)
8230 },
8231 {
8232 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8233 0x193d, 0x1107)
8234 },
b0f9408b
KB		 8235 {
8236 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8237 0x193d, 0x8460)
8238 },
8239 {
8240 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8241 0x193d, 0x8461)
8242 },
84a77fef
MB		 8243 {
8244 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8245 0x193d, 0xc460)
8246 },
8247 {
8248 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8249 0x193d, 0xc461)
8250 },
b0f9408b
KB		 8251 {
8252 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8253 0x193d, 0xf460)
8254 },
8255 {
8256 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8257 0x193d, 0xf461)
8258 },
8259 {
8260 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8261 0x1bd4, 0x0045)
8262 },
8263 {
8264 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8265 0x1bd4, 0x0046)
8266 },
8267 {
8268 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8269 0x1bd4, 0x0047)
8270 },
8271 {
8272 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8273 0x1bd4, 0x0048)
8274 },
9f8d05fa
KB		 8275 {
8276 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8277 0x1bd4, 0x004a)
8278 },
8279 {
8280 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8281 0x1bd4, 0x004b)
8282 },
8283 {
8284 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8285 0x1bd4, 0x004c)
8286 },
63a7956a
GW		 8287 {
8288 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8289 0x1bd4, 0x004f)
8290 },
c1b10475
AK		 8291 {
8292 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8293 0x19e5, 0xd227)
8294 },
8295 {
8296 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8297 0x19e5, 0xd228)
8298 },
8299 {
8300 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8301 0x19e5, 0xd229)
8302 },
8303 {
8304 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8305 0x19e5, 0xd22a)
8306 },
8307 {
8308 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8309 0x19e5, 0xd22b)
8310 },
8311 {
8312 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8313 0x19e5, 0xd22c)
8314 },
6c223761
KB		 8315 {
8316 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8317 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
8318 },
8319 {
8320 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 8321 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
6c223761
KB		 8322 },
8323 {
8324 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8325 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
6c223761
KB		 8326 },
8327 {
8328 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8329 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
6c223761
KB		 8330 },
8331 {
8332 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8333 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
6c223761
KB		 8334 },
8335 {
8336 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8337 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
6c223761
KB		 8338 },
8339 {
8340 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8341 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
6c223761
KB		 8342 },
8343 {
8344 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8345 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
6c223761
KB		 8346 },
8347 {
8348 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8349 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
6c223761 8350 },
55790064
KB		 8351 {
8352 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8353 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
8354 },
63a7956a
GW		 8355 {
8356 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8357 PCI_VENDOR_ID_ADAPTEC2, 0x0808)
8358 },
8359 {
8360 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8361 PCI_VENDOR_ID_ADAPTEC2, 0x0809)
8362 },
3af06083
MR		 8363 {
8364 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8365 PCI_VENDOR_ID_ADAPTEC2, 0x080a)
8366 },
6c223761
KB		 8367 {
8368 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8369 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
6c223761
KB		 8370 },
8371 {
8372 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8373 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
6c223761
KB		 8374 },
8375 {
8376 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8377 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
6c223761
KB		 8378 },
8379 {
8380 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8381 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
6c223761
KB		 8382 },
8383 {
8384 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8385 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
6c223761
KB		 8386 },
8387 {
8388 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8389 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
6c223761
KB		 8390 },
8391 {
8392 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8393 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
6c223761
KB		 8394 },
8395 {
8396 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8397 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
6c223761
KB		 8398 },
8399 {
8400 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8401 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
6c223761 8402 },
55790064
KB		 8403 {
8404 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8405 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
8406 },
6c223761
KB		 8407 {
8408 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8409 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
6c223761
KB		 8410 },
8411 {
8412 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8413 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
6c223761
KB		 8414 },
8415 {
8416 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8417 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
6c223761
KB		 8418 },
8419 {
8420 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8421 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
6c223761
KB		 8422 },
8423 {
8424 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8425 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
6c223761 8426 },
b0f9408b
KB		 8427 {
8428 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8429 PCI_VENDOR_ID_ADAPTEC2, 0x1282)
8430 },
6c223761
KB		 8431 {
8432 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8433 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
6c223761
KB		 8434 },
8435 {
8436 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 8437 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
6c223761 8438 },
bd809e8d
KB		 8439 {
8440 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8441 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
8442 },
8443 {
8444 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8445 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
8446 },
6c223761
KB		 8447 {
8448 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff
KB		 8449 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
8450 },
9f8d05fa
KB		 8451 {
8452 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8453 PCI_VENDOR_ID_ADVANTECH, 0x8312)
8454 },
55790064
KB		 8455 {
8456 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8457 PCI_VENDOR_ID_DELL, 0x1fe0)
8458 },
7eddabff
KB		 8459 {
8460 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8461 PCI_VENDOR_ID_HP, 0x0600)
8462 },
8463 {
8464 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8465 PCI_VENDOR_ID_HP, 0x0601)
8466 },
8467 {
8468 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8469 PCI_VENDOR_ID_HP, 0x0602)
8470 },
8471 {
8472 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8473 PCI_VENDOR_ID_HP, 0x0603)
8474 },
8475 {
8476 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
55790064 8477 PCI_VENDOR_ID_HP, 0x0609)
7eddabff
KB		 8478 },
8479 {
8480 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8481 PCI_VENDOR_ID_HP, 0x0650)
8482 },
8483 {
8484 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8485 PCI_VENDOR_ID_HP, 0x0651)
8486 },
8487 {
8488 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8489 PCI_VENDOR_ID_HP, 0x0652)
8490 },
8491 {
8492 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8493 PCI_VENDOR_ID_HP, 0x0653)
8494 },
8495 {
8496 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8497 PCI_VENDOR_ID_HP, 0x0654)
8498 },
8499 {
8500 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8501 PCI_VENDOR_ID_HP, 0x0655)
8502 },
7eddabff
KB		 8503 {
8504 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8505 PCI_VENDOR_ID_HP, 0x0700)
8506 },
8507 {
8508 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8509 PCI_VENDOR_ID_HP, 0x0701)
6c223761
KB		 8510 },
8511 {
8512 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8513 PCI_VENDOR_ID_HP, 0x1001)
8514 },
8515 {
8516 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8517 PCI_VENDOR_ID_HP, 0x1100)
8518 },
8519 {
8520 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8521 PCI_VENDOR_ID_HP, 0x1101)
8522 },
8bdb3b9c
GW		 8523 {
8524 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8525 0x1d8d, 0x0800)
8526 },
8527 {
8528 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8529 0x1d8d, 0x0908)
8530 },
8531 {
8532 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8533 0x1d8d, 0x0806)
8534 },
8535 {
8536 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8537 0x1d8d, 0x0916)
8538 },
71ecc60d
GW		 8539 {
8540 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8541 PCI_VENDOR_ID_GIGABYTE, 0x1000)
8542 },
6c223761
KB		 8543 {
8544 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8545 PCI_ANY_ID, PCI_ANY_ID)
8546 },
8547 { 0 }
8548};
8549
8550MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
8551
8552static struct pci_driver pqi_pci_driver = {
8553 .name = DRIVER_NAME_SHORT,
8554 .id_table = pqi_pci_id_table,
8555 .probe = pqi_pci_probe,
8556 .remove = pqi_pci_remove,
8557 .shutdown = pqi_shutdown,
061ef06a
KB		 8558#if defined(CONFIG_PM)
8559 .suspend = pqi_suspend,
8560 .resume = pqi_resume,
8561#endif
6c223761
KB		 8562};
8563
8564static int __init pqi_init(void)
8565{
8566 int rc;
8567
8568 pr_info(DRIVER_NAME "\n");
8569
8b664fef 8570 pqi_sas_transport_template = sas_attach_transport(&pqi_sas_transport_functions);
6c223761
KB		 8571 if (!pqi_sas_transport_template)
8572 return -ENODEV;
8573
3c50976f
KB		 8574 pqi_process_module_params();
8575
6c223761
KB		 8576 rc = pci_register_driver(&pqi_pci_driver);
8577 if (rc)
8578 sas_release_transport(pqi_sas_transport_template);
8579
8580 return rc;
8581}
8582
8583static void __exit pqi_cleanup(void)
8584{
8585 pci_unregister_driver(&pqi_pci_driver);
8586 sas_release_transport(pqi_sas_transport_template);
8587}
8588
8589module_init(pqi_init);
8590module_exit(pqi_cleanup);
8591
8592static void __attribute__((unused)) verify_structures(void)
8593{
8594 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8595 sis_host_to_ctrl_doorbell) != 0x20);
8596 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8597 sis_interrupt_mask) != 0x34);
8598 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8599 sis_ctrl_to_host_doorbell) != 0x9c);
8600 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8601 sis_ctrl_to_host_doorbell_clear) != 0xa0);
ff6abb73
KB		 8602 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8603 sis_driver_scratch) != 0xb0);
6c223761
KB		 8604 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8605 sis_firmware_status) != 0xbc);
8606 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8607 sis_mailbox) != 0x1000);
8608 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8609 pqi_registers) != 0x4000);
8610
8611 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8612 iu_type) != 0x0);
8613 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8614 iu_length) != 0x2);
8615 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8616 response_queue_id) != 0x4);
8617 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8618 work_area) != 0x6);
8619 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
8620
8621 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8622 status) != 0x0);
8623 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8624 service_response) != 0x1);
8625 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8626 data_present) != 0x2);
8627 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8628 reserved) != 0x3);
8629 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8630 residual_count) != 0x4);
8631 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8632 data_length) != 0x8);
8633 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8634 reserved1) != 0xa);
8635 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8636 data) != 0xc);
8637 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
8638
8639 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8640 data_in_result) != 0x0);
8641 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8642 data_out_result) != 0x1);
8643 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8644 reserved) != 0x2);
8645 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8646 status) != 0x5);
8647 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8648 status_qualifier) != 0x6);
8649 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8650 sense_data_length) != 0x8);
8651 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8652 response_data_length) != 0xa);
8653 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8654 data_in_transferred) != 0xc);
8655 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8656 data_out_transferred) != 0x10);
8657 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8658 data) != 0x14);
8659 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
8660
8661 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8662 signature) != 0x0);
8663 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8664 function_and_status_code) != 0x8);
8665 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8666 max_admin_iq_elements) != 0x10);
8667 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8668 max_admin_oq_elements) != 0x11);
8669 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8670 admin_iq_element_length) != 0x12);
8671 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8672 admin_oq_element_length) != 0x13);
8673 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8674 max_reset_timeout) != 0x14);
8675 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8676 legacy_intx_status) != 0x18);
8677 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8678 legacy_intx_mask_set) != 0x1c);
8679 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8680 legacy_intx_mask_clear) != 0x20);
8681 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8682 device_status) != 0x40);
8683 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8684 admin_iq_pi_offset) != 0x48);
8685 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8686 admin_oq_ci_offset) != 0x50);
8687 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8688 admin_iq_element_array_addr) != 0x58);
8689 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8690 admin_oq_element_array_addr) != 0x60);
8691 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8692 admin_iq_ci_addr) != 0x68);
8693 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8694 admin_oq_pi_addr) != 0x70);
8695 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8696 admin_iq_num_elements) != 0x78);
8697 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8698 admin_oq_num_elements) != 0x79);
8699 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8700 admin_queue_int_msg_num) != 0x7a);
8701 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8702 device_error) != 0x80);
8703 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8704 error_details) != 0x88);
8705 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8706 device_reset) != 0x90);
8707 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8708 power_action) != 0x94);
8709 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
8710
8711 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8712 header.iu_type) != 0);
8713 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8714 header.iu_length) != 2);
8715 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8716 header.work_area) != 6);
8717 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8718 request_id) != 8);
8719 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8720 function_code) != 10);
8721 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8722 data.report_device_capability.buffer_length) != 44);
8723 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8724 data.report_device_capability.sg_descriptor) != 48);
8725 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8726 data.create_operational_iq.queue_id) != 12);
8727 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8728 data.create_operational_iq.element_array_addr) != 16);
8729 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8730 data.create_operational_iq.ci_addr) != 24);
8731 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8732 data.create_operational_iq.num_elements) != 32);
8733 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8734 data.create_operational_iq.element_length) != 34);
8735 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8736 data.create_operational_iq.queue_protocol) != 36);
8737 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8738 data.create_operational_oq.queue_id) != 12);
8739 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8740 data.create_operational_oq.element_array_addr) != 16);
8741 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8742 data.create_operational_oq.pi_addr) != 24);
8743 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8744 data.create_operational_oq.num_elements) != 32);
8745 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8746 data.create_operational_oq.element_length) != 34);
8747 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8748 data.create_operational_oq.queue_protocol) != 36);
8749 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8750 data.create_operational_oq.int_msg_num) != 40);
8751 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8752 data.create_operational_oq.coalescing_count) != 42);
8753 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8754 data.create_operational_oq.min_coalescing_time) != 44);
8755 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8756 data.create_operational_oq.max_coalescing_time) != 48);
8757 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8758 data.delete_operational_queue.queue_id) != 12);
8759 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
c593642c 8760 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761 8761 data.create_operational_iq) != 64 - 11);
c593642c 8762 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761 8763 data.create_operational_oq) != 64 - 11);
c593642c 8764 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
6c223761
KB		 8765 data.delete_operational_queue) != 64 - 11);
8766
8767 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8768 header.iu_type) != 0);
8769 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8770 header.iu_length) != 2);
8771 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8772 header.work_area) != 6);
8773 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8774 request_id) != 8);
8775 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8776 function_code) != 10);
8777 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8778 status) != 11);
8779 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8780 data.create_operational_iq.status_descriptor) != 12);
8781 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8782 data.create_operational_iq.iq_pi_offset) != 16);
8783 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8784 data.create_operational_oq.status_descriptor) != 12);
8785 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8786 data.create_operational_oq.oq_ci_offset) != 16);
8787 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
8788
8789 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8790 header.iu_type) != 0);
8791 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8792 header.iu_length) != 2);
8793 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8794 header.response_queue_id) != 4);
8795 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8796 header.work_area) != 6);
8797 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8798 request_id) != 8);
8799 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8800 nexus_id) != 10);
8801 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8802 buffer_length) != 12);
8803 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8804 lun_number) != 16);
8805 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8806 protocol_specific) != 24);
8807 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8808 error_index) != 27);
8809 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8810 cdb) != 32);
21432010 8811 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8812 timeout) != 60);
6c223761
KB		 8813 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8814 sg_descriptors) != 64);
8815 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
8816 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
8817
8818 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8819 header.iu_type) != 0);
8820 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8821 header.iu_length) != 2);
8822 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8823 header.response_queue_id) != 4);
8824 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8825 header.work_area) != 6);
8826 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8827 request_id) != 8);
8828 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8829 nexus_id) != 12);
8830 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8831 buffer_length) != 16);
8832 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8833 data_encryption_key_index) != 22);
8834 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8835 encrypt_tweak_lower) != 24);
8836 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8837 encrypt_tweak_upper) != 28);
8838 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8839 cdb) != 32);
8840 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8841 error_index) != 48);
8842 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8843 num_sg_descriptors) != 50);
8844 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8845 cdb_length) != 51);
8846 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8847 lun_number) != 52);
8848 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8849 sg_descriptors) != 64);
8850 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
8851 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
8852
8853 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8854 header.iu_type) != 0);
8855 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8856 header.iu_length) != 2);
8857 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8858 request_id) != 8);
8859 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8860 error_index) != 10);
8861
8862 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8863 header.iu_type) != 0);
8864 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8865 header.iu_length) != 2);
8866 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8867 header.response_queue_id) != 4);
8868 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8869 request_id) != 8);
8870 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8871 data.report_event_configuration.buffer_length) != 12);
8872 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8873 data.report_event_configuration.sg_descriptors) != 16);
8874 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8875 data.set_event_configuration.global_event_oq_id) != 10);
8876 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8877 data.set_event_configuration.buffer_length) != 12);
8878 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8879 data.set_event_configuration.sg_descriptors) != 16);
8880
8881 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
8882 max_inbound_iu_length) != 6);
8883 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
8884 max_outbound_iu_length) != 14);
8885 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
8886
8887 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8888 data_length) != 0);
8889 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8890 iq_arbitration_priority_support_bitmask) != 8);
8891 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8892 maximum_aw_a) != 9);
8893 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8894 maximum_aw_b) != 10);
8895 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8896 maximum_aw_c) != 11);
8897 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8898 max_inbound_queues) != 16);
8899 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8900 max_elements_per_iq) != 18);
8901 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8902 max_iq_element_length) != 24);
8903 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8904 min_iq_element_length) != 26);
8905 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8906 max_outbound_queues) != 30);
8907 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8908 max_elements_per_oq) != 32);
8909 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8910 intr_coalescing_time_granularity) != 34);
8911 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8912 max_oq_element_length) != 36);
8913 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8914 min_oq_element_length) != 38);
8915 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8916 iu_layer_descriptors) != 64);
8917 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
8918
8919 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
8920 event_type) != 0);
8921 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
8922 oq_id) != 2);
8923 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
8924
8925 BUILD_BUG_ON(offsetof(struct pqi_event_config,
8926 num_event_descriptors) != 2);
8927 BUILD_BUG_ON(offsetof(struct pqi_event_config,
8928 descriptors) != 4);
8929
061ef06a
KB		 8930 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
8931 ARRAY_SIZE(pqi_supported_event_types));
8932
6c223761
KB		 8933 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8934 header.iu_type) != 0);
8935 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8936 header.iu_length) != 2);
8937 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8938 event_type) != 8);
8939 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8940 event_id) != 10);
8941 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8942 additional_event_id) != 12);
8943 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8944 data) != 16);
8945 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
8946
8947 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8948 header.iu_type) != 0);
8949 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8950 header.iu_length) != 2);
8951 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8952 event_type) != 8);
8953 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8954 event_id) != 10);
8955 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8956 additional_event_id) != 12);
8957 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
8958
8959 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8960 header.iu_type) != 0);
8961 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8962 header.iu_length) != 2);
8963 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8964 request_id) != 8);
8965 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8966 nexus_id) != 10);
8967 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
c2922f17
MB		 8968 timeout) != 14);
8969 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
6c223761
KB		 8970 lun_number) != 16);
8971 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8972 protocol_specific) != 24);
8973 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8974 outbound_queue_id_to_manage) != 26);
8975 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8976 request_id_to_manage) != 28);
8977 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8978 task_management_function) != 30);
8979 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
8980
8981 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8982 header.iu_type) != 0);
8983 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8984 header.iu_length) != 2);
8985 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8986 request_id) != 8);
8987 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8988 nexus_id) != 10);
8989 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8990 additional_response_info) != 12);
8991 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8992 response_code) != 15);
8993 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
8994
8995 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8996 configured_logical_drive_count) != 0);
8997 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8998 configuration_signature) != 1);
8999 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9000 firmware_version) != 5);
9001 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9002 extended_logical_unit_count) != 154);
9003 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9004 firmware_build_number) != 190);
9005 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
9006 controller_mode) != 292);
9007
1be42f46
KB		 9008 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9009 phys_bay_in_box) != 115);
9010 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9011 device_type) != 120);
9012 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9013 redundant_path_present_map) != 1736);
9014 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9015 active_path_number) != 1738);
9016 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9017 alternate_paths_phys_connector) != 1739);
9018 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9019 alternate_paths_phys_box_on_port) != 1755);
9020 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
9021 current_queue_depth_limit) != 1796);
9022 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
9023
6c223761
KB		 9024 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
9025 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
9026 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
9027 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
9028 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
9029 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
9030 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
9031 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
9032 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
9033 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
9034 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
9035 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
9036
9037 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
d727a776
KB		 9038 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
9039 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
6c223761 9040}
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