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Linux 4.18.10
[linux/fpc-iii.git] / drivers / scsi / smartpqi / smartpqi_init.c
blobb78d20b74ed8e31c5ee2c4cb523e91b39bda7441
1 /*
2 * driver for Microsemi PQI-based storage controllers
3 * Copyright (c) 2016-2017 Microsemi Corporation
4 * Copyright (c) 2016 PMC-Sierra, Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 *
15 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
16 *
17 */
18
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/pci.h>
22 #include <linux/delay.h>
23 #include <linux/interrupt.h>
24 #include <linux/sched.h>
25 #include <linux/rtc.h>
26 #include <linux/bcd.h>
27 #include <linux/reboot.h>
28 #include <linux/cciss_ioctl.h>
29 #include <linux/blk-mq-pci.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_cmnd.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_eh.h>
34 #include <scsi/scsi_transport_sas.h>
35 #include <asm/unaligned.h>
36 #include "smartpqi.h"
37 #include "smartpqi_sis.h"
38
39 #if !defined(BUILD_TIMESTAMP)
40 #define BUILD_TIMESTAMP
41 #endif
42
43 #define DRIVER_VERSION "1.1.4-115"
44 #define DRIVER_MAJOR 1
45 #define DRIVER_MINOR 1
46 #define DRIVER_RELEASE 4
47 #define DRIVER_REVISION 115
48
49 #define DRIVER_NAME "Microsemi PQI Driver (v" \
50 DRIVER_VERSION BUILD_TIMESTAMP ")"
51 #define DRIVER_NAME_SHORT "smartpqi"
52
53 #define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor))
54
55 MODULE_AUTHOR("Microsemi");
56 MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version "
57 DRIVER_VERSION);
58 MODULE_SUPPORTED_DEVICE("Microsemi Smart Family Controllers");
59 MODULE_VERSION(DRIVER_VERSION);
60 MODULE_LICENSE("GPL");
61
62 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info);
63 static void pqi_ctrl_offline_worker(struct work_struct *work);
64 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info);
65 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
66 static void pqi_scan_start(struct Scsi_Host *shost);
67 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
68 struct pqi_queue_group *queue_group, enum pqi_io_path path,
69 struct pqi_io_request *io_request);
70 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
71 struct pqi_iu_header *request, unsigned int flags,
72 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs);
73 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
74 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
75 unsigned int cdb_length, struct pqi_queue_group *queue_group,
76 struct pqi_encryption_info *encryption_info, bool raid_bypass);
77
78 /* for flags argument to pqi_submit_raid_request_synchronous() */
79 #define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
80
81 static struct scsi_transport_template *pqi_sas_transport_template;
82
83 static atomic_t pqi_controller_count = ATOMIC_INIT(0);
84
85 enum pqi_lockup_action {
86 NONE,
87 REBOOT,
88 PANIC
89 };
90
91 static enum pqi_lockup_action pqi_lockup_action = NONE;
92
93 static struct {
94 enum pqi_lockup_action action;
95 char *name;
96 } pqi_lockup_actions[] = {
97 {
98 .action = NONE,
99 .name = "none",
100 },
101 {
102 .action = REBOOT,
103 .name = "reboot",
104 },
105 {
106 .action = PANIC,
107 .name = "panic",
108 },
109 };
110
111 static unsigned int pqi_supported_event_types[] = {
112 PQI_EVENT_TYPE_HOTPLUG,
113 PQI_EVENT_TYPE_HARDWARE,
114 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
115 PQI_EVENT_TYPE_LOGICAL_DEVICE,
116 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
117 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
118 };
119
120 static int pqi_disable_device_id_wildcards;
121 module_param_named(disable_device_id_wildcards,
122 pqi_disable_device_id_wildcards, int, 0644);
123 MODULE_PARM_DESC(disable_device_id_wildcards,
124 "Disable device ID wildcards.");
125
126 static int pqi_disable_heartbeat;
127 module_param_named(disable_heartbeat,
128 pqi_disable_heartbeat, int, 0644);
129 MODULE_PARM_DESC(disable_heartbeat,
130 "Disable heartbeat.");
131
132 static int pqi_disable_ctrl_shutdown;
133 module_param_named(disable_ctrl_shutdown,
134 pqi_disable_ctrl_shutdown, int, 0644);
135 MODULE_PARM_DESC(disable_ctrl_shutdown,
136 "Disable controller shutdown when controller locked up.");
137
138 static char *pqi_lockup_action_param;
139 module_param_named(lockup_action,
140 pqi_lockup_action_param, charp, 0644);
141 MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
142 "\t\tSupported: none, reboot, panic\n"
143 "\t\tDefault: none");
144
145 static char *raid_levels[] = {
146 "RAID-0",
147 "RAID-4",
148 "RAID-1(1+0)",
149 "RAID-5",
150 "RAID-5+1",
151 "RAID-ADG",
152 "RAID-1(ADM)",
153 };
154
155 static char *pqi_raid_level_to_string(u8 raid_level)
156 {
157 if (raid_level < ARRAY_SIZE(raid_levels))
158 return raid_levels[raid_level];
159
160 return "RAID UNKNOWN";
161 }
162
163 #define SA_RAID_0 0
164 #define SA_RAID_4 1
165 #define SA_RAID_1 2 /* also used for RAID 10 */
166 #define SA_RAID_5 3 /* also used for RAID 50 */
167 #define SA_RAID_51 4
168 #define SA_RAID_6 5 /* also used for RAID 60 */
169 #define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
170 #define SA_RAID_MAX SA_RAID_ADM
171 #define SA_RAID_UNKNOWN 0xff
172
173 static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
174 {
175 pqi_prep_for_scsi_done(scmd);
176 scmd->scsi_done(scmd);
177 }
178
179 static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
180 {
181 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
182 }
183
184 static inline struct pqi_ctrl_info *shost_to_hba(struct Scsi_Host *shost)
185 {
186 void *hostdata = shost_priv(shost);
187
188 return *((struct pqi_ctrl_info **)hostdata);
189 }
190
191 static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
192 {
193 return !device->is_physical_device;
194 }
195
196 static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
197 {
198 return scsi3addr[2] != 0;
199 }
200
201 static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
202 {
203 return !ctrl_info->controller_online;
204 }
205
206 static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
207 {
208 if (ctrl_info->controller_online)
209 if (!sis_is_firmware_running(ctrl_info))
210 pqi_take_ctrl_offline(ctrl_info);
211 }
212
213 static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
214 {
215 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
216 }
217
218 static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
219 struct pqi_ctrl_info *ctrl_info)
220 {
221 return sis_read_driver_scratch(ctrl_info);
222 }
223
224 static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
225 enum pqi_ctrl_mode mode)
226 {
227 sis_write_driver_scratch(ctrl_info, mode);
228 }
229
230 static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
231 {
232 ctrl_info->block_requests = true;
233 scsi_block_requests(ctrl_info->scsi_host);
234 }
235
236 static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
237 {
238 ctrl_info->block_requests = false;
239 wake_up_all(&ctrl_info->block_requests_wait);
240 pqi_retry_raid_bypass_requests(ctrl_info);
241 scsi_unblock_requests(ctrl_info->scsi_host);
242 }
243
244 static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
245 {
246 return ctrl_info->block_requests;
247 }
248
249 static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
250 unsigned long timeout_msecs)
251 {
252 unsigned long remaining_msecs;
253
254 if (!pqi_ctrl_blocked(ctrl_info))
255 return timeout_msecs;
256
257 atomic_inc(&ctrl_info->num_blocked_threads);
258
259 if (timeout_msecs == NO_TIMEOUT) {
260 wait_event(ctrl_info->block_requests_wait,
261 !pqi_ctrl_blocked(ctrl_info));
262 remaining_msecs = timeout_msecs;
263 } else {
264 unsigned long remaining_jiffies;
265
266 remaining_jiffies =
267 wait_event_timeout(ctrl_info->block_requests_wait,
268 !pqi_ctrl_blocked(ctrl_info),
269 msecs_to_jiffies(timeout_msecs));
270 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
271 }
272
273 atomic_dec(&ctrl_info->num_blocked_threads);
274
275 return remaining_msecs;
276 }
277
278 static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info)
279 {
280 atomic_inc(&ctrl_info->num_busy_threads);
281 }
282
283 static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info)
284 {
285 atomic_dec(&ctrl_info->num_busy_threads);
286 }
287
288 static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
289 {
290 while (atomic_read(&ctrl_info->num_busy_threads) >
291 atomic_read(&ctrl_info->num_blocked_threads))
292 usleep_range(1000, 2000);
293 }
294
295 static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
296 {
297 return device->device_offline;
298 }
299
300 static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
301 {
302 device->in_reset = true;
303 }
304
305 static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
306 {
307 device->in_reset = false;
308 }
309
310 static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
311 {
312 return device->in_reset;
313 }
314
315 static inline void pqi_schedule_rescan_worker_with_delay(
316 struct pqi_ctrl_info *ctrl_info, unsigned long delay)
317 {
318 if (pqi_ctrl_offline(ctrl_info))
319 return;
320
321 schedule_delayed_work(&ctrl_info->rescan_work, delay);
322 }
323
324 static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
325 {
326 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
327 }
328
329 #define PQI_RESCAN_WORK_DELAY (10 * HZ)
330
331 static inline void pqi_schedule_rescan_worker_delayed(
332 struct pqi_ctrl_info *ctrl_info)
333 {
334 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
335 }
336
337 static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
338 {
339 cancel_delayed_work_sync(&ctrl_info->rescan_work);
340 }
341
342 static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
343 {
344 if (!ctrl_info->heartbeat_counter)
345 return 0;
346
347 return readl(ctrl_info->heartbeat_counter);
348 }
349
350 static int pqi_map_single(struct pci_dev *pci_dev,
351 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
352 size_t buffer_length, int data_direction)
353 {
354 dma_addr_t bus_address;
355
356 if (!buffer || buffer_length == 0 || data_direction == PCI_DMA_NONE)
357 return 0;
358
359 bus_address = pci_map_single(pci_dev, buffer, buffer_length,
360 data_direction);
361 if (pci_dma_mapping_error(pci_dev, bus_address))
362 return -ENOMEM;
363
364 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
365 put_unaligned_le32(buffer_length, &sg_descriptor->length);
366 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
367
368 return 0;
369 }
370
371 static void pqi_pci_unmap(struct pci_dev *pci_dev,
372 struct pqi_sg_descriptor *descriptors, int num_descriptors,
373 int data_direction)
374 {
375 int i;
376
377 if (data_direction == PCI_DMA_NONE)
378 return;
379
380 for (i = 0; i < num_descriptors; i++)
381 pci_unmap_single(pci_dev,
382 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
383 get_unaligned_le32(&descriptors[i].length),
384 data_direction);
385 }
386
387 static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
388 struct pqi_raid_path_request *request, u8 cmd,
389 u8 *scsi3addr, void *buffer, size_t buffer_length,
390 u16 vpd_page, int *pci_direction)
391 {
392 u8 *cdb;
393 int pci_dir;
394
395 memset(request, 0, sizeof(*request));
396
397 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
398 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
399 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
400 &request->header.iu_length);
401 put_unaligned_le32(buffer_length, &request->buffer_length);
402 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
403 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
404 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
405
406 cdb = request->cdb;
407
408 switch (cmd) {
409 case INQUIRY:
410 request->data_direction = SOP_READ_FLAG;
411 cdb[0] = INQUIRY;
412 if (vpd_page & VPD_PAGE) {
413 cdb[1] = 0x1;
414 cdb[2] = (u8)vpd_page;
415 }
416 cdb[4] = (u8)buffer_length;
417 break;
418 case CISS_REPORT_LOG:
419 case CISS_REPORT_PHYS:
420 request->data_direction = SOP_READ_FLAG;
421 cdb[0] = cmd;
422 if (cmd == CISS_REPORT_PHYS)
423 cdb[1] = CISS_REPORT_PHYS_EXTENDED;
424 else
425 cdb[1] = CISS_REPORT_LOG_EXTENDED;
426 put_unaligned_be32(buffer_length, &cdb[6]);
427 break;
428 case CISS_GET_RAID_MAP:
429 request->data_direction = SOP_READ_FLAG;
430 cdb[0] = CISS_READ;
431 cdb[1] = CISS_GET_RAID_MAP;
432 put_unaligned_be32(buffer_length, &cdb[6]);
433 break;
434 case SA_FLUSH_CACHE:
435 request->data_direction = SOP_WRITE_FLAG;
436 cdb[0] = BMIC_WRITE;
437 cdb[6] = BMIC_FLUSH_CACHE;
438 put_unaligned_be16(buffer_length, &cdb[7]);
439 break;
440 case BMIC_IDENTIFY_CONTROLLER:
441 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
442 request->data_direction = SOP_READ_FLAG;
443 cdb[0] = BMIC_READ;
444 cdb[6] = cmd;
445 put_unaligned_be16(buffer_length, &cdb[7]);
446 break;
447 case BMIC_WRITE_HOST_WELLNESS:
448 request->data_direction = SOP_WRITE_FLAG;
449 cdb[0] = BMIC_WRITE;
450 cdb[6] = cmd;
451 put_unaligned_be16(buffer_length, &cdb[7]);
452 break;
453 default:
454 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n",
455 cmd);
456 break;
457 }
458
459 switch (request->data_direction) {
460 case SOP_READ_FLAG:
461 pci_dir = PCI_DMA_FROMDEVICE;
462 break;
463 case SOP_WRITE_FLAG:
464 pci_dir = PCI_DMA_TODEVICE;
465 break;
466 case SOP_NO_DIRECTION_FLAG:
467 pci_dir = PCI_DMA_NONE;
468 break;
469 default:
470 pci_dir = PCI_DMA_BIDIRECTIONAL;
471 break;
472 }
473
474 *pci_direction = pci_dir;
475
476 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
477 buffer, buffer_length, pci_dir);
478 }
479
480 static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
481 {
482 io_request->scmd = NULL;
483 io_request->status = 0;
484 io_request->error_info = NULL;
485 io_request->raid_bypass = false;
486 }
487
488 static struct pqi_io_request *pqi_alloc_io_request(
489 struct pqi_ctrl_info *ctrl_info)
490 {
491 struct pqi_io_request *io_request;
492 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
493
494 while (1) {
495 io_request = &ctrl_info->io_request_pool[i];
496 if (atomic_inc_return(&io_request->refcount) == 1)
497 break;
498 atomic_dec(&io_request->refcount);
499 i = (i + 1) % ctrl_info->max_io_slots;
500 }
501
502 /* benignly racy */
503 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
504
505 pqi_reinit_io_request(io_request);
506
507 return io_request;
508 }
509
510 static void pqi_free_io_request(struct pqi_io_request *io_request)
511 {
512 atomic_dec(&io_request->refcount);
513 }
514
515 static int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
516 struct bmic_identify_controller *buffer)
517 {
518 int rc;
519 int pci_direction;
520 struct pqi_raid_path_request request;
521
522 rc = pqi_build_raid_path_request(ctrl_info, &request,
523 BMIC_IDENTIFY_CONTROLLER, RAID_CTLR_LUNID, buffer,
524 sizeof(*buffer), 0, &pci_direction);
525 if (rc)
526 return rc;
527
528 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
529 NULL, NO_TIMEOUT);
530
531 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
532 pci_direction);
533
534 return rc;
535 }
536
537 static int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
538 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
539 {
540 int rc;
541 int pci_direction;
542 struct pqi_raid_path_request request;
543
544 rc = pqi_build_raid_path_request(ctrl_info, &request,
545 INQUIRY, scsi3addr, buffer, buffer_length, vpd_page,
546 &pci_direction);
547 if (rc)
548 return rc;
549
550 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
551 NULL, NO_TIMEOUT);
552
553 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
554 pci_direction);
555
556 return rc;
557 }
558
559 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
560 struct pqi_scsi_dev *device,
561 struct bmic_identify_physical_device *buffer,
562 size_t buffer_length)
563 {
564 int rc;
565 int pci_direction;
566 u16 bmic_device_index;
567 struct pqi_raid_path_request request;
568
569 rc = pqi_build_raid_path_request(ctrl_info, &request,
570 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
571 buffer_length, 0, &pci_direction);
572 if (rc)
573 return rc;
574
575 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
576 request.cdb[2] = (u8)bmic_device_index;
577 request.cdb[9] = (u8)(bmic_device_index >> 8);
578
579 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
580 0, NULL, NO_TIMEOUT);
581
582 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
583 pci_direction);
584
585 return rc;
586 }
587
588 static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
589 enum bmic_flush_cache_shutdown_event shutdown_event)
590 {
591 int rc;
592 struct pqi_raid_path_request request;
593 int pci_direction;
594 struct bmic_flush_cache *flush_cache;
595
596 /*
597 * Don't bother trying to flush the cache if the controller is
598 * locked up.
599 */
600 if (pqi_ctrl_offline(ctrl_info))
601 return -ENXIO;
602
603 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
604 if (!flush_cache)
605 return -ENOMEM;
606
607 flush_cache->shutdown_event = shutdown_event;
608
609 rc = pqi_build_raid_path_request(ctrl_info, &request,
610 SA_FLUSH_CACHE, RAID_CTLR_LUNID, flush_cache,
611 sizeof(*flush_cache), 0, &pci_direction);
612 if (rc)
613 goto out;
614
615 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
616 0, NULL, NO_TIMEOUT);
617
618 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
619 pci_direction);
620
621 out:
622 kfree(flush_cache);
623
624 return rc;
625 }
626
627 static int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
628 void *buffer, size_t buffer_length)
629 {
630 int rc;
631 struct pqi_raid_path_request request;
632 int pci_direction;
633
634 rc = pqi_build_raid_path_request(ctrl_info, &request,
635 BMIC_WRITE_HOST_WELLNESS, RAID_CTLR_LUNID, buffer,
636 buffer_length, 0, &pci_direction);
637 if (rc)
638 return rc;
639
640 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
641 0, NULL, NO_TIMEOUT);
642
643 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
644 pci_direction);
645
646 return rc;
647 }
648
649 #pragma pack(1)
650
651 struct bmic_host_wellness_driver_version {
652 u8 start_tag[4];
653 u8 driver_version_tag[2];
654 __le16 driver_version_length;
655 char driver_version[32];
656 u8 end_tag[2];
657 };
658
659 #pragma pack()
660
661 static int pqi_write_driver_version_to_host_wellness(
662 struct pqi_ctrl_info *ctrl_info)
663 {
664 int rc;
665 struct bmic_host_wellness_driver_version *buffer;
666 size_t buffer_length;
667
668 buffer_length = sizeof(*buffer);
669
670 buffer = kmalloc(buffer_length, GFP_KERNEL);
671 if (!buffer)
672 return -ENOMEM;
673
674 buffer->start_tag[0] = '<';
675 buffer->start_tag[1] = 'H';
676 buffer->start_tag[2] = 'W';
677 buffer->start_tag[3] = '>';
678 buffer->driver_version_tag[0] = 'D';
679 buffer->driver_version_tag[1] = 'V';
680 put_unaligned_le16(sizeof(buffer->driver_version),
681 &buffer->driver_version_length);
682 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
683 sizeof(buffer->driver_version) - 1);
684 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
685 buffer->end_tag[0] = 'Z';
686 buffer->end_tag[1] = 'Z';
687
688 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
689
690 kfree(buffer);
691
692 return rc;
693 }
694
695 #pragma pack(1)
696
697 struct bmic_host_wellness_time {
698 u8 start_tag[4];
699 u8 time_tag[2];
700 __le16 time_length;
701 u8 time[8];
702 u8 dont_write_tag[2];
703 u8 end_tag[2];
704 };
705
706 #pragma pack()
707
708 static int pqi_write_current_time_to_host_wellness(
709 struct pqi_ctrl_info *ctrl_info)
710 {
711 int rc;
712 struct bmic_host_wellness_time *buffer;
713 size_t buffer_length;
714 time64_t local_time;
715 unsigned int year;
716 struct tm tm;
717
718 buffer_length = sizeof(*buffer);
719
720 buffer = kmalloc(buffer_length, GFP_KERNEL);
721 if (!buffer)
722 return -ENOMEM;
723
724 buffer->start_tag[0] = '<';
725 buffer->start_tag[1] = 'H';
726 buffer->start_tag[2] = 'W';
727 buffer->start_tag[3] = '>';
728 buffer->time_tag[0] = 'T';
729 buffer->time_tag[1] = 'D';
730 put_unaligned_le16(sizeof(buffer->time),
731 &buffer->time_length);
732
733 local_time = ktime_get_real_seconds();
734 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
735 year = tm.tm_year + 1900;
736
737 buffer->time[0] = bin2bcd(tm.tm_hour);
738 buffer->time[1] = bin2bcd(tm.tm_min);
739 buffer->time[2] = bin2bcd(tm.tm_sec);
740 buffer->time[3] = 0;
741 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
742 buffer->time[5] = bin2bcd(tm.tm_mday);
743 buffer->time[6] = bin2bcd(year / 100);
744 buffer->time[7] = bin2bcd(year % 100);
745
746 buffer->dont_write_tag[0] = 'D';
747 buffer->dont_write_tag[1] = 'W';
748 buffer->end_tag[0] = 'Z';
749 buffer->end_tag[1] = 'Z';
750
751 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
752
753 kfree(buffer);
754
755 return rc;
756 }
757
758 #define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * HZ)
759
760 static void pqi_update_time_worker(struct work_struct *work)
761 {
762 int rc;
763 struct pqi_ctrl_info *ctrl_info;
764
765 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
766 update_time_work);
767
768 if (pqi_ctrl_offline(ctrl_info))
769 return;
770
771 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
772 if (rc)
773 dev_warn(&ctrl_info->pci_dev->dev,
774 "error updating time on controller\n");
775
776 schedule_delayed_work(&ctrl_info->update_time_work,
777 PQI_UPDATE_TIME_WORK_INTERVAL);
778 }
779
780 static inline void pqi_schedule_update_time_worker(
781 struct pqi_ctrl_info *ctrl_info)
782 {
783 schedule_delayed_work(&ctrl_info->update_time_work, 0);
784 }
785
786 static inline void pqi_cancel_update_time_worker(
787 struct pqi_ctrl_info *ctrl_info)
788 {
789 cancel_delayed_work_sync(&ctrl_info->update_time_work);
790 }
791
792 static int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
793 void *buffer, size_t buffer_length)
794 {
795 int rc;
796 int pci_direction;
797 struct pqi_raid_path_request request;
798
799 rc = pqi_build_raid_path_request(ctrl_info, &request,
800 cmd, RAID_CTLR_LUNID, buffer, buffer_length, 0, &pci_direction);
801 if (rc)
802 return rc;
803
804 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
805 NULL, NO_TIMEOUT);
806
807 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
808 pci_direction);
809
810 return rc;
811 }
812
813 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
814 void **buffer)
815 {
816 int rc;
817 size_t lun_list_length;
818 size_t lun_data_length;
819 size_t new_lun_list_length;
820 void *lun_data = NULL;
821 struct report_lun_header *report_lun_header;
822
823 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
824 if (!report_lun_header) {
825 rc = -ENOMEM;
826 goto out;
827 }
828
829 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header,
830 sizeof(*report_lun_header));
831 if (rc)
832 goto out;
833
834 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
835
836 again:
837 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
838
839 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
840 if (!lun_data) {
841 rc = -ENOMEM;
842 goto out;
843 }
844
845 if (lun_list_length == 0) {
846 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
847 goto out;
848 }
849
850 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
851 if (rc)
852 goto out;
853
854 new_lun_list_length = get_unaligned_be32(
855 &((struct report_lun_header *)lun_data)->list_length);
856
857 if (new_lun_list_length > lun_list_length) {
858 lun_list_length = new_lun_list_length;
859 kfree(lun_data);
860 goto again;
861 }
862
863 out:
864 kfree(report_lun_header);
865
866 if (rc) {
867 kfree(lun_data);
868 lun_data = NULL;
869 }
870
871 *buffer = lun_data;
872
873 return rc;
874 }
875
876 static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info,
877 void **buffer)
878 {
879 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS,
880 buffer);
881 }
882
883 static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info,
884 void **buffer)
885 {
886 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
887 }
888
889 static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
890 struct report_phys_lun_extended **physdev_list,
891 struct report_log_lun_extended **logdev_list)
892 {
893 int rc;
894 size_t logdev_list_length;
895 size_t logdev_data_length;
896 struct report_log_lun_extended *internal_logdev_list;
897 struct report_log_lun_extended *logdev_data;
898 struct report_lun_header report_lun_header;
899
900 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
901 if (rc)
902 dev_err(&ctrl_info->pci_dev->dev,
903 "report physical LUNs failed\n");
904
905 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
906 if (rc)
907 dev_err(&ctrl_info->pci_dev->dev,
908 "report logical LUNs failed\n");
909
910 /*
911 * Tack the controller itself onto the end of the logical device list.
912 */
913
914 logdev_data = *logdev_list;
915
916 if (logdev_data) {
917 logdev_list_length =
918 get_unaligned_be32(&logdev_data->header.list_length);
919 } else {
920 memset(&report_lun_header, 0, sizeof(report_lun_header));
921 logdev_data =
922 (struct report_log_lun_extended *)&report_lun_header;
923 logdev_list_length = 0;
924 }
925
926 logdev_data_length = sizeof(struct report_lun_header) +
927 logdev_list_length;
928
929 internal_logdev_list = kmalloc(logdev_data_length +
930 sizeof(struct report_log_lun_extended), GFP_KERNEL);
931 if (!internal_logdev_list) {
932 kfree(*logdev_list);
933 *logdev_list = NULL;
934 return -ENOMEM;
935 }
936
937 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
938 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
939 sizeof(struct report_log_lun_extended_entry));
940 put_unaligned_be32(logdev_list_length +
941 sizeof(struct report_log_lun_extended_entry),
942 &internal_logdev_list->header.list_length);
943
944 kfree(*logdev_list);
945 *logdev_list = internal_logdev_list;
946
947 return 0;
948 }
949
950 static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
951 int bus, int target, int lun)
952 {
953 device->bus = bus;
954 device->target = target;
955 device->lun = lun;
956 }
957
958 static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
959 {
960 u8 *scsi3addr;
961 u32 lunid;
962 int bus;
963 int target;
964 int lun;
965
966 scsi3addr = device->scsi3addr;
967 lunid = get_unaligned_le32(scsi3addr);
968
969 if (pqi_is_hba_lunid(scsi3addr)) {
970 /* The specified device is the controller. */
971 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
972 device->target_lun_valid = true;
973 return;
974 }
975
976 if (pqi_is_logical_device(device)) {
977 if (device->is_external_raid_device) {
978 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
979 target = (lunid >> 16) & 0x3fff;
980 lun = lunid & 0xff;
981 } else {
982 bus = PQI_RAID_VOLUME_BUS;
983 target = 0;
984 lun = lunid & 0x3fff;
985 }
986 pqi_set_bus_target_lun(device, bus, target, lun);
987 device->target_lun_valid = true;
988 return;
989 }
990
991 /*
992 * Defer target and LUN assignment for non-controller physical devices
993 * because the SAS transport layer will make these assignments later.
994 */
995 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
996 }
997
998 static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
999 struct pqi_scsi_dev *device)
1000 {
1001 int rc;
1002 u8 raid_level;
1003 u8 *buffer;
1004
1005 raid_level = SA_RAID_UNKNOWN;
1006
1007 buffer = kmalloc(64, GFP_KERNEL);
1008 if (buffer) {
1009 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1010 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1011 if (rc == 0) {
1012 raid_level = buffer[8];
1013 if (raid_level > SA_RAID_MAX)
1014 raid_level = SA_RAID_UNKNOWN;
1015 }
1016 kfree(buffer);
1017 }
1018
1019 device->raid_level = raid_level;
1020 }
1021
1022 static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1023 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1024 {
1025 char *err_msg;
1026 u32 raid_map_size;
1027 u32 r5or6_blocks_per_row;
1028 unsigned int num_phys_disks;
1029 unsigned int num_raid_map_entries;
1030
1031 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1032
1033 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1034 err_msg = "RAID map too small";
1035 goto bad_raid_map;
1036 }
1037
1038 if (raid_map_size > sizeof(*raid_map)) {
1039 err_msg = "RAID map too large";
1040 goto bad_raid_map;
1041 }
1042
1043 num_phys_disks = get_unaligned_le16(&raid_map->layout_map_count) *
1044 (get_unaligned_le16(&raid_map->data_disks_per_row) +
1045 get_unaligned_le16(&raid_map->metadata_disks_per_row));
1046 num_raid_map_entries = num_phys_disks *
1047 get_unaligned_le16(&raid_map->row_cnt);
1048
1049 if (num_raid_map_entries > RAID_MAP_MAX_ENTRIES) {
1050 err_msg = "invalid number of map entries in RAID map";
1051 goto bad_raid_map;
1052 }
1053
1054 if (device->raid_level == SA_RAID_1) {
1055 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1056 err_msg = "invalid RAID-1 map";
1057 goto bad_raid_map;
1058 }
1059 } else if (device->raid_level == SA_RAID_ADM) {
1060 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1061 err_msg = "invalid RAID-1(ADM) map";
1062 goto bad_raid_map;
1063 }
1064 } else if ((device->raid_level == SA_RAID_5 ||
1065 device->raid_level == SA_RAID_6) &&
1066 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1067 /* RAID 50/60 */
1068 r5or6_blocks_per_row =
1069 get_unaligned_le16(&raid_map->strip_size) *
1070 get_unaligned_le16(&raid_map->data_disks_per_row);
1071 if (r5or6_blocks_per_row == 0) {
1072 err_msg = "invalid RAID-5 or RAID-6 map";
1073 goto bad_raid_map;
1074 }
1075 }
1076
1077 return 0;
1078
1079 bad_raid_map:
1080 dev_warn(&ctrl_info->pci_dev->dev,
1081 "logical device %08x%08x %s\n",
1082 *((u32 *)&device->scsi3addr),
1083 *((u32 *)&device->scsi3addr[4]), err_msg);
1084
1085 return -EINVAL;
1086 }
1087
1088 static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1089 struct pqi_scsi_dev *device)
1090 {
1091 int rc;
1092 int pci_direction;
1093 struct pqi_raid_path_request request;
1094 struct raid_map *raid_map;
1095
1096 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1097 if (!raid_map)
1098 return -ENOMEM;
1099
1100 rc = pqi_build_raid_path_request(ctrl_info, &request,
1101 CISS_GET_RAID_MAP, device->scsi3addr, raid_map,
1102 sizeof(*raid_map), 0, &pci_direction);
1103 if (rc)
1104 goto error;
1105
1106 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
1107 NULL, NO_TIMEOUT);
1108
1109 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
1110 pci_direction);
1111
1112 if (rc)
1113 goto error;
1114
1115 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1116 if (rc)
1117 goto error;
1118
1119 device->raid_map = raid_map;
1120
1121 return 0;
1122
1123 error:
1124 kfree(raid_map);
1125
1126 return rc;
1127 }
1128
1129 static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
1130 struct pqi_scsi_dev *device)
1131 {
1132 int rc;
1133 u8 *buffer;
1134 u8 bypass_status;
1135
1136 buffer = kmalloc(64, GFP_KERNEL);
1137 if (!buffer)
1138 return;
1139
1140 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1141 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
1142 if (rc)
1143 goto out;
1144
1145 #define RAID_BYPASS_STATUS 4
1146 #define RAID_BYPASS_CONFIGURED 0x1
1147 #define RAID_BYPASS_ENABLED 0x2
1148
1149 bypass_status = buffer[RAID_BYPASS_STATUS];
1150 device->raid_bypass_configured =
1151 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1152 if (device->raid_bypass_configured &&
1153 (bypass_status & RAID_BYPASS_ENABLED) &&
1154 pqi_get_raid_map(ctrl_info, device) == 0)
1155 device->raid_bypass_enabled = true;
1156
1157 out:
1158 kfree(buffer);
1159 }
1160
1161 /*
1162 * Use vendor-specific VPD to determine online/offline status of a volume.
1163 */
1164
1165 static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1166 struct pqi_scsi_dev *device)
1167 {
1168 int rc;
1169 size_t page_length;
1170 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1171 bool volume_offline = true;
1172 u32 volume_flags;
1173 struct ciss_vpd_logical_volume_status *vpd;
1174
1175 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1176 if (!vpd)
1177 goto no_buffer;
1178
1179 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1180 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1181 if (rc)
1182 goto out;
1183
1184 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1185 volume_status) + vpd->page_length;
1186 if (page_length < sizeof(*vpd))
1187 goto out;
1188
1189 volume_status = vpd->volume_status;
1190 volume_flags = get_unaligned_be32(&vpd->flags);
1191 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1192
1193 out:
1194 kfree(vpd);
1195 no_buffer:
1196 device->volume_status = volume_status;
1197 device->volume_offline = volume_offline;
1198 }
1199
1200 static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
1201 struct pqi_scsi_dev *device)
1202 {
1203 int rc;
1204 u8 *buffer;
1205
1206 buffer = kmalloc(64, GFP_KERNEL);
1207 if (!buffer)
1208 return -ENOMEM;
1209
1210 /* Send an inquiry to the device to see what it is. */
1211 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64);
1212 if (rc)
1213 goto out;
1214
1215 scsi_sanitize_inquiry_string(&buffer[8], 8);
1216 scsi_sanitize_inquiry_string(&buffer[16], 16);
1217
1218 device->devtype = buffer[0] & 0x1f;
1219 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1220 memcpy(device->model, &buffer[16], sizeof(device->model));
1221
1222 if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK) {
1223 if (device->is_external_raid_device) {
1224 device->raid_level = SA_RAID_UNKNOWN;
1225 device->volume_status = CISS_LV_OK;
1226 device->volume_offline = false;
1227 } else {
1228 pqi_get_raid_level(ctrl_info, device);
1229 pqi_get_raid_bypass_status(ctrl_info, device);
1230 pqi_get_volume_status(ctrl_info, device);
1231 }
1232 }
1233
1234 out:
1235 kfree(buffer);
1236
1237 return rc;
1238 }
1239
1240 static void pqi_get_physical_disk_info(struct pqi_ctrl_info *ctrl_info,
1241 struct pqi_scsi_dev *device,
1242 struct bmic_identify_physical_device *id_phys)
1243 {
1244 int rc;
1245
1246 memset(id_phys, 0, sizeof(*id_phys));
1247
1248 rc = pqi_identify_physical_device(ctrl_info, device,
1249 id_phys, sizeof(*id_phys));
1250 if (rc) {
1251 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1252 return;
1253 }
1254
1255 device->queue_depth =
1256 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1257 device->device_type = id_phys->device_type;
1258 device->active_path_index = id_phys->active_path_number;
1259 device->path_map = id_phys->redundant_path_present_map;
1260 memcpy(&device->box,
1261 &id_phys->alternate_paths_phys_box_on_port,
1262 sizeof(device->box));
1263 memcpy(&device->phys_connector,
1264 &id_phys->alternate_paths_phys_connector,
1265 sizeof(device->phys_connector));
1266 device->bay = id_phys->phys_bay_in_box;
1267 }
1268
1269 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1270 struct pqi_scsi_dev *device)
1271 {
1272 char *status;
1273 static const char unknown_state_str[] =
1274 "Volume is in an unknown state (%u)";
1275 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1276
1277 switch (device->volume_status) {
1278 case CISS_LV_OK:
1279 status = "Volume online";
1280 break;
1281 case CISS_LV_FAILED:
1282 status = "Volume failed";
1283 break;
1284 case CISS_LV_NOT_CONFIGURED:
1285 status = "Volume not configured";
1286 break;
1287 case CISS_LV_DEGRADED:
1288 status = "Volume degraded";
1289 break;
1290 case CISS_LV_READY_FOR_RECOVERY:
1291 status = "Volume ready for recovery operation";
1292 break;
1293 case CISS_LV_UNDERGOING_RECOVERY:
1294 status = "Volume undergoing recovery";
1295 break;
1296 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1297 status = "Wrong physical drive was replaced";
1298 break;
1299 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1300 status = "A physical drive not properly connected";
1301 break;
1302 case CISS_LV_HARDWARE_OVERHEATING:
1303 status = "Hardware is overheating";
1304 break;
1305 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1306 status = "Hardware has overheated";
1307 break;
1308 case CISS_LV_UNDERGOING_EXPANSION:
1309 status = "Volume undergoing expansion";
1310 break;
1311 case CISS_LV_NOT_AVAILABLE:
1312 status = "Volume waiting for transforming volume";
1313 break;
1314 case CISS_LV_QUEUED_FOR_EXPANSION:
1315 status = "Volume queued for expansion";
1316 break;
1317 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1318 status = "Volume disabled due to SCSI ID conflict";
1319 break;
1320 case CISS_LV_EJECTED:
1321 status = "Volume has been ejected";
1322 break;
1323 case CISS_LV_UNDERGOING_ERASE:
1324 status = "Volume undergoing background erase";
1325 break;
1326 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1327 status = "Volume ready for predictive spare rebuild";
1328 break;
1329 case CISS_LV_UNDERGOING_RPI:
1330 status = "Volume undergoing rapid parity initialization";
1331 break;
1332 case CISS_LV_PENDING_RPI:
1333 status = "Volume queued for rapid parity initialization";
1334 break;
1335 case CISS_LV_ENCRYPTED_NO_KEY:
1336 status = "Encrypted volume inaccessible - key not present";
1337 break;
1338 case CISS_LV_UNDERGOING_ENCRYPTION:
1339 status = "Volume undergoing encryption process";
1340 break;
1341 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1342 status = "Volume undergoing encryption re-keying process";
1343 break;
1344 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1345 status = "Volume encrypted but encryption is disabled";
1346 break;
1347 case CISS_LV_PENDING_ENCRYPTION:
1348 status = "Volume pending migration to encrypted state";
1349 break;
1350 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1351 status = "Volume pending encryption rekeying";
1352 break;
1353 case CISS_LV_NOT_SUPPORTED:
1354 status = "Volume not supported on this controller";
1355 break;
1356 case CISS_LV_STATUS_UNAVAILABLE:
1357 status = "Volume status not available";
1358 break;
1359 default:
1360 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1361 unknown_state_str, device->volume_status);
1362 status = unknown_state_buffer;
1363 break;
1364 }
1365
1366 dev_info(&ctrl_info->pci_dev->dev,
1367 "scsi %d:%d:%d:%d %s\n",
1368 ctrl_info->scsi_host->host_no,
1369 device->bus, device->target, device->lun, status);
1370 }
1371
1372 static void pqi_rescan_worker(struct work_struct *work)
1373 {
1374 struct pqi_ctrl_info *ctrl_info;
1375
1376 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1377 rescan_work);
1378
1379 pqi_scan_scsi_devices(ctrl_info);
1380 }
1381
1382 static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1383 struct pqi_scsi_dev *device)
1384 {
1385 int rc;
1386
1387 if (pqi_is_logical_device(device))
1388 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1389 device->target, device->lun);
1390 else
1391 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1392
1393 return rc;
1394 }
1395
1396 static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info,
1397 struct pqi_scsi_dev *device)
1398 {
1399 if (pqi_is_logical_device(device))
1400 scsi_remove_device(device->sdev);
1401 else
1402 pqi_remove_sas_device(device);
1403 }
1404
1405 /* Assumes the SCSI device list lock is held. */
1406
1407 static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1408 int bus, int target, int lun)
1409 {
1410 struct pqi_scsi_dev *device;
1411
1412 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1413 scsi_device_list_entry)
1414 if (device->bus == bus && device->target == target &&
1415 device->lun == lun)
1416 return device;
1417
1418 return NULL;
1419 }
1420
1421 static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1,
1422 struct pqi_scsi_dev *dev2)
1423 {
1424 if (dev1->is_physical_device != dev2->is_physical_device)
1425 return false;
1426
1427 if (dev1->is_physical_device)
1428 return dev1->wwid == dev2->wwid;
1429
1430 return memcmp(dev1->volume_id, dev2->volume_id,
1431 sizeof(dev1->volume_id)) == 0;
1432 }
1433
1434 enum pqi_find_result {
1435 DEVICE_NOT_FOUND,
1436 DEVICE_CHANGED,
1437 DEVICE_SAME,
1438 };
1439
1440 static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
1441 struct pqi_scsi_dev *device_to_find,
1442 struct pqi_scsi_dev **matching_device)
1443 {
1444 struct pqi_scsi_dev *device;
1445
1446 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1447 scsi_device_list_entry) {
1448 if (pqi_scsi3addr_equal(device_to_find->scsi3addr,
1449 device->scsi3addr)) {
1450 *matching_device = device;
1451 if (pqi_device_equal(device_to_find, device)) {
1452 if (device_to_find->volume_offline)
1453 return DEVICE_CHANGED;
1454 return DEVICE_SAME;
1455 }
1456 return DEVICE_CHANGED;
1457 }
1458 }
1459
1460 return DEVICE_NOT_FOUND;
1461 }
1462
1463 #define PQI_DEV_INFO_BUFFER_LENGTH 128
1464
1465 static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1466 char *action, struct pqi_scsi_dev *device)
1467 {
1468 ssize_t count;
1469 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1470
1471 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1472 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1473
1474 if (device->target_lun_valid)
1475 count += snprintf(buffer + count,
1476 PQI_DEV_INFO_BUFFER_LENGTH - count,
1477 "%d:%d",
1478 device->target,
1479 device->lun);
1480 else
1481 count += snprintf(buffer + count,
1482 PQI_DEV_INFO_BUFFER_LENGTH - count,
1483 "-:-");
1484
1485 if (pqi_is_logical_device(device))
1486 count += snprintf(buffer + count,
1487 PQI_DEV_INFO_BUFFER_LENGTH - count,
1488 " %08x%08x",
1489 *((u32 *)&device->scsi3addr),
1490 *((u32 *)&device->scsi3addr[4]));
1491 else
1492 count += snprintf(buffer + count,
1493 PQI_DEV_INFO_BUFFER_LENGTH - count,
1494 " %016llx", device->sas_address);
1495
1496 count += snprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
1497 " %s %.8s %.16s ",
1498 scsi_device_type(device->devtype),
1499 device->vendor,
1500 device->model);
1501
1502 if (pqi_is_logical_device(device)) {
1503 if (device->devtype == TYPE_DISK)
1504 count += snprintf(buffer + count,
1505 PQI_DEV_INFO_BUFFER_LENGTH - count,
1506 "SSDSmartPathCap%c En%c %-12s",
1507 device->raid_bypass_configured ? '+' : '-',
1508 device->raid_bypass_enabled ? '+' : '-',
1509 pqi_raid_level_to_string(device->raid_level));
1510 } else {
1511 count += snprintf(buffer + count,
1512 PQI_DEV_INFO_BUFFER_LENGTH - count,
1513 "AIO%c", device->aio_enabled ? '+' : '-');
1514 if (device->devtype == TYPE_DISK ||
1515 device->devtype == TYPE_ZBC)
1516 count += snprintf(buffer + count,
1517 PQI_DEV_INFO_BUFFER_LENGTH - count,
1518 " qd=%-6d", device->queue_depth);
1519 }
1520
1521 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
1522 }
1523
1524 /* Assumes the SCSI device list lock is held. */
1525
1526 static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1527 struct pqi_scsi_dev *new_device)
1528 {
1529 existing_device->devtype = new_device->devtype;
1530 existing_device->device_type = new_device->device_type;
1531 existing_device->bus = new_device->bus;
1532 if (new_device->target_lun_valid) {
1533 existing_device->target = new_device->target;
1534 existing_device->lun = new_device->lun;
1535 existing_device->target_lun_valid = true;
1536 }
1537
1538 /* By definition, the scsi3addr and wwid fields are already the same. */
1539
1540 existing_device->is_physical_device = new_device->is_physical_device;
1541 existing_device->is_external_raid_device =
1542 new_device->is_external_raid_device;
1543 existing_device->aio_enabled = new_device->aio_enabled;
1544 memcpy(existing_device->vendor, new_device->vendor,
1545 sizeof(existing_device->vendor));
1546 memcpy(existing_device->model, new_device->model,
1547 sizeof(existing_device->model));
1548 existing_device->sas_address = new_device->sas_address;
1549 existing_device->raid_level = new_device->raid_level;
1550 existing_device->queue_depth = new_device->queue_depth;
1551 existing_device->aio_handle = new_device->aio_handle;
1552 existing_device->volume_status = new_device->volume_status;
1553 existing_device->active_path_index = new_device->active_path_index;
1554 existing_device->path_map = new_device->path_map;
1555 existing_device->bay = new_device->bay;
1556 memcpy(existing_device->box, new_device->box,
1557 sizeof(existing_device->box));
1558 memcpy(existing_device->phys_connector, new_device->phys_connector,
1559 sizeof(existing_device->phys_connector));
1560 existing_device->offload_to_mirror = 0;
1561 kfree(existing_device->raid_map);
1562 existing_device->raid_map = new_device->raid_map;
1563 existing_device->raid_bypass_configured =
1564 new_device->raid_bypass_configured;
1565 existing_device->raid_bypass_enabled =
1566 new_device->raid_bypass_enabled;
1567
1568 /* To prevent this from being freed later. */
1569 new_device->raid_map = NULL;
1570 }
1571
1572 static inline void pqi_free_device(struct pqi_scsi_dev *device)
1573 {
1574 if (device) {
1575 kfree(device->raid_map);
1576 kfree(device);
1577 }
1578 }
1579
1580 /*
1581 * Called when exposing a new device to the OS fails in order to re-adjust
1582 * our internal SCSI device list to match the SCSI ML's view.
1583 */
1584
1585 static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1586 struct pqi_scsi_dev *device)
1587 {
1588 unsigned long flags;
1589
1590 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1591 list_del(&device->scsi_device_list_entry);
1592 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1593
1594 /* Allow the device structure to be freed later. */
1595 device->keep_device = false;
1596 }
1597
1598 static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1599 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1600 {
1601 int rc;
1602 unsigned int i;
1603 unsigned long flags;
1604 enum pqi_find_result find_result;
1605 struct pqi_scsi_dev *device;
1606 struct pqi_scsi_dev *next;
1607 struct pqi_scsi_dev *matching_device;
1608 LIST_HEAD(add_list);
1609 LIST_HEAD(delete_list);
1610
1611 /*
1612 * The idea here is to do as little work as possible while holding the
1613 * spinlock. That's why we go to great pains to defer anything other
1614 * than updating the internal device list until after we release the
1615 * spinlock.
1616 */
1617
1618 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1619
1620 /* Assume that all devices in the existing list have gone away. */
1621 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1622 scsi_device_list_entry)
1623 device->device_gone = true;
1624
1625 for (i = 0; i < num_new_devices; i++) {
1626 device = new_device_list[i];
1627
1628 find_result = pqi_scsi_find_entry(ctrl_info, device,
1629 &matching_device);
1630
1631 switch (find_result) {
1632 case DEVICE_SAME:
1633 /*
1634 * The newly found device is already in the existing
1635 * device list.
1636 */
1637 device->new_device = false;
1638 matching_device->device_gone = false;
1639 pqi_scsi_update_device(matching_device, device);
1640 break;
1641 case DEVICE_NOT_FOUND:
1642 /*
1643 * The newly found device is NOT in the existing device
1644 * list.
1645 */
1646 device->new_device = true;
1647 break;
1648 case DEVICE_CHANGED:
1649 /*
1650 * The original device has gone away and we need to add
1651 * the new device.
1652 */
1653 device->new_device = true;
1654 break;
1655 }
1656 }
1657
1658 /* Process all devices that have gone away. */
1659 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1660 scsi_device_list_entry) {
1661 if (device->device_gone) {
1662 list_del(&device->scsi_device_list_entry);
1663 list_add_tail(&device->delete_list_entry, &delete_list);
1664 }
1665 }
1666
1667 /* Process all new devices. */
1668 for (i = 0; i < num_new_devices; i++) {
1669 device = new_device_list[i];
1670 if (!device->new_device)
1671 continue;
1672 if (device->volume_offline)
1673 continue;
1674 list_add_tail(&device->scsi_device_list_entry,
1675 &ctrl_info->scsi_device_list);
1676 list_add_tail(&device->add_list_entry, &add_list);
1677 /* To prevent this device structure from being freed later. */
1678 device->keep_device = true;
1679 }
1680
1681 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1682
1683 /* Remove all devices that have gone away. */
1684 list_for_each_entry_safe(device, next, &delete_list,
1685 delete_list_entry) {
1686 if (device->volume_offline) {
1687 pqi_dev_info(ctrl_info, "offline", device);
1688 pqi_show_volume_status(ctrl_info, device);
1689 } else {
1690 pqi_dev_info(ctrl_info, "removed", device);
1691 }
1692 if (device->sdev)
1693 pqi_remove_device(ctrl_info, device);
1694 list_del(&device->delete_list_entry);
1695 pqi_free_device(device);
1696 }
1697
1698 /*
1699 * Notify the SCSI ML if the queue depth of any existing device has
1700 * changed.
1701 */
1702 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1703 scsi_device_list_entry) {
1704 if (device->sdev && device->queue_depth !=
1705 device->advertised_queue_depth) {
1706 device->advertised_queue_depth = device->queue_depth;
1707 scsi_change_queue_depth(device->sdev,
1708 device->advertised_queue_depth);
1709 }
1710 }
1711
1712 /* Expose any new devices. */
1713 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
1714 if (!device->sdev) {
1715 pqi_dev_info(ctrl_info, "added", device);
1716 rc = pqi_add_device(ctrl_info, device);
1717 if (rc) {
1718 dev_warn(&ctrl_info->pci_dev->dev,
1719 "scsi %d:%d:%d:%d addition failed, device not added\n",
1720 ctrl_info->scsi_host->host_no,
1721 device->bus, device->target,
1722 device->lun);
1723 pqi_fixup_botched_add(ctrl_info, device);
1724 }
1725 }
1726 }
1727 }
1728
1729 static bool pqi_is_supported_device(struct pqi_scsi_dev *device)
1730 {
1731 bool is_supported = false;
1732
1733 switch (device->devtype) {
1734 case TYPE_DISK:
1735 case TYPE_ZBC:
1736 case TYPE_TAPE:
1737 case TYPE_MEDIUM_CHANGER:
1738 case TYPE_ENCLOSURE:
1739 is_supported = true;
1740 break;
1741 case TYPE_RAID:
1742 /*
1743 * Only support the HBA controller itself as a RAID
1744 * controller. If it's a RAID controller other than
1745 * the HBA itself (an external RAID controller, for
1746 * example), we don't support it.
1747 */
1748 if (pqi_is_hba_lunid(device->scsi3addr))
1749 is_supported = true;
1750 break;
1751 }
1752
1753 return is_supported;
1754 }
1755
1756 static inline bool pqi_skip_device(u8 *scsi3addr)
1757 {
1758 /* Ignore all masked devices. */
1759 if (MASKED_DEVICE(scsi3addr))
1760 return true;
1761
1762 return false;
1763 }
1764
1765 static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1766 {
1767 int i;
1768 int rc;
1769 LIST_HEAD(new_device_list_head);
1770 struct report_phys_lun_extended *physdev_list = NULL;
1771 struct report_log_lun_extended *logdev_list = NULL;
1772 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
1773 struct report_log_lun_extended_entry *log_lun_ext_entry;
1774 struct bmic_identify_physical_device *id_phys = NULL;
1775 u32 num_physicals;
1776 u32 num_logicals;
1777 struct pqi_scsi_dev **new_device_list = NULL;
1778 struct pqi_scsi_dev *device;
1779 struct pqi_scsi_dev *next;
1780 unsigned int num_new_devices;
1781 unsigned int num_valid_devices;
1782 bool is_physical_device;
1783 u8 *scsi3addr;
1784 static char *out_of_memory_msg =
1785 "failed to allocate memory, device discovery stopped";
1786
1787 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
1788 if (rc)
1789 goto out;
1790
1791 if (physdev_list)
1792 num_physicals =
1793 get_unaligned_be32(&physdev_list->header.list_length)
1794 / sizeof(physdev_list->lun_entries[0]);
1795 else
1796 num_physicals = 0;
1797
1798 if (logdev_list)
1799 num_logicals =
1800 get_unaligned_be32(&logdev_list->header.list_length)
1801 / sizeof(logdev_list->lun_entries[0]);
1802 else
1803 num_logicals = 0;
1804
1805 if (num_physicals) {
1806 /*
1807 * We need this buffer for calls to pqi_get_physical_disk_info()
1808 * below. We allocate it here instead of inside
1809 * pqi_get_physical_disk_info() because it's a fairly large
1810 * buffer.
1811 */
1812 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
1813 if (!id_phys) {
1814 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1815 out_of_memory_msg);
1816 rc = -ENOMEM;
1817 goto out;
1818 }
1819 }
1820
1821 num_new_devices = num_physicals + num_logicals;
1822
1823 new_device_list = kmalloc_array(num_new_devices,
1824 sizeof(*new_device_list),
1825 GFP_KERNEL);
1826 if (!new_device_list) {
1827 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
1828 rc = -ENOMEM;
1829 goto out;
1830 }
1831
1832 for (i = 0; i < num_new_devices; i++) {
1833 device = kzalloc(sizeof(*device), GFP_KERNEL);
1834 if (!device) {
1835 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1836 out_of_memory_msg);
1837 rc = -ENOMEM;
1838 goto out;
1839 }
1840 list_add_tail(&device->new_device_list_entry,
1841 &new_device_list_head);
1842 }
1843
1844 device = NULL;
1845 num_valid_devices = 0;
1846
1847 for (i = 0; i < num_new_devices; i++) {
1848
1849 if (i < num_physicals) {
1850 is_physical_device = true;
1851 phys_lun_ext_entry = &physdev_list->lun_entries[i];
1852 log_lun_ext_entry = NULL;
1853 scsi3addr = phys_lun_ext_entry->lunid;
1854 } else {
1855 is_physical_device = false;
1856 phys_lun_ext_entry = NULL;
1857 log_lun_ext_entry =
1858 &logdev_list->lun_entries[i - num_physicals];
1859 scsi3addr = log_lun_ext_entry->lunid;
1860 }
1861
1862 if (is_physical_device && pqi_skip_device(scsi3addr))
1863 continue;
1864
1865 if (device)
1866 device = list_next_entry(device, new_device_list_entry);
1867 else
1868 device = list_first_entry(&new_device_list_head,
1869 struct pqi_scsi_dev, new_device_list_entry);
1870
1871 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1872 device->is_physical_device = is_physical_device;
1873 if (!is_physical_device)
1874 device->is_external_raid_device =
1875 pqi_is_external_raid_addr(scsi3addr);
1876
1877 /* Gather information about the device. */
1878 rc = pqi_get_device_info(ctrl_info, device);
1879 if (rc == -ENOMEM) {
1880 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1881 out_of_memory_msg);
1882 goto out;
1883 }
1884 if (rc) {
1885 if (device->is_physical_device)
1886 dev_warn(&ctrl_info->pci_dev->dev,
1887 "obtaining device info failed, skipping physical device %016llx\n",
1888 get_unaligned_be64(
1889 &phys_lun_ext_entry->wwid));
1890 else
1891 dev_warn(&ctrl_info->pci_dev->dev,
1892 "obtaining device info failed, skipping logical device %08x%08x\n",
1893 *((u32 *)&device->scsi3addr),
1894 *((u32 *)&device->scsi3addr[4]));
1895 rc = 0;
1896 continue;
1897 }
1898
1899 if (!pqi_is_supported_device(device))
1900 continue;
1901
1902 pqi_assign_bus_target_lun(device);
1903
1904 if (device->is_physical_device) {
1905 device->wwid = phys_lun_ext_entry->wwid;
1906 if ((phys_lun_ext_entry->device_flags &
1907 REPORT_PHYS_LUN_DEV_FLAG_AIO_ENABLED) &&
1908 phys_lun_ext_entry->aio_handle)
1909 device->aio_enabled = true;
1910 } else {
1911 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
1912 sizeof(device->volume_id));
1913 }
1914
1915 switch (device->devtype) {
1916 case TYPE_DISK:
1917 case TYPE_ZBC:
1918 case TYPE_ENCLOSURE:
1919 if (device->is_physical_device) {
1920 device->sas_address =
1921 get_unaligned_be64(&device->wwid);
1922 if (device->devtype == TYPE_DISK ||
1923 device->devtype == TYPE_ZBC) {
1924 device->aio_handle =
1925 phys_lun_ext_entry->aio_handle;
1926 pqi_get_physical_disk_info(ctrl_info,
1927 device, id_phys);
1928 }
1929 }
1930 break;
1931 }
1932
1933 new_device_list[num_valid_devices++] = device;
1934 }
1935
1936 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
1937
1938 out:
1939 list_for_each_entry_safe(device, next, &new_device_list_head,
1940 new_device_list_entry) {
1941 if (device->keep_device)
1942 continue;
1943 list_del(&device->new_device_list_entry);
1944 pqi_free_device(device);
1945 }
1946
1947 kfree(new_device_list);
1948 kfree(physdev_list);
1949 kfree(logdev_list);
1950 kfree(id_phys);
1951
1952 return rc;
1953 }
1954
1955 static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1956 {
1957 unsigned long flags;
1958 struct pqi_scsi_dev *device;
1959
1960 while (1) {
1961 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1962
1963 device = list_first_entry_or_null(&ctrl_info->scsi_device_list,
1964 struct pqi_scsi_dev, scsi_device_list_entry);
1965 if (device)
1966 list_del(&device->scsi_device_list_entry);
1967
1968 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
1969 flags);
1970
1971 if (!device)
1972 break;
1973
1974 if (device->sdev)
1975 pqi_remove_device(ctrl_info, device);
1976 pqi_free_device(device);
1977 }
1978 }
1979
1980 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1981 {
1982 int rc;
1983
1984 if (pqi_ctrl_offline(ctrl_info))
1985 return -ENXIO;
1986
1987 mutex_lock(&ctrl_info->scan_mutex);
1988
1989 rc = pqi_update_scsi_devices(ctrl_info);
1990 if (rc)
1991 pqi_schedule_rescan_worker_delayed(ctrl_info);
1992
1993 mutex_unlock(&ctrl_info->scan_mutex);
1994
1995 return rc;
1996 }
1997
1998 static void pqi_scan_start(struct Scsi_Host *shost)
1999 {
2000 pqi_scan_scsi_devices(shost_to_hba(shost));
2001 }
2002
2003 /* Returns TRUE if scan is finished. */
2004
2005 static int pqi_scan_finished(struct Scsi_Host *shost,
2006 unsigned long elapsed_time)
2007 {
2008 struct pqi_ctrl_info *ctrl_info;
2009
2010 ctrl_info = shost_priv(shost);
2011
2012 return !mutex_is_locked(&ctrl_info->scan_mutex);
2013 }
2014
2015 static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
2016 {
2017 mutex_lock(&ctrl_info->scan_mutex);
2018 mutex_unlock(&ctrl_info->scan_mutex);
2019 }
2020
2021 static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
2022 {
2023 mutex_lock(&ctrl_info->lun_reset_mutex);
2024 mutex_unlock(&ctrl_info->lun_reset_mutex);
2025 }
2026
2027 static inline void pqi_set_encryption_info(
2028 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map,
2029 u64 first_block)
2030 {
2031 u32 volume_blk_size;
2032
2033 /*
2034 * Set the encryption tweak values based on logical block address.
2035 * If the block size is 512, the tweak value is equal to the LBA.
2036 * For other block sizes, tweak value is (LBA * block size) / 512.
2037 */
2038 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2039 if (volume_blk_size != 512)
2040 first_block = (first_block * volume_blk_size) / 512;
2041
2042 encryption_info->data_encryption_key_index =
2043 get_unaligned_le16(&raid_map->data_encryption_key_index);
2044 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2045 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2046 }
2047
2048 /*
2049 * Attempt to perform RAID bypass mapping for a logical volume I/O.
2050 */
2051
2052 #define PQI_RAID_BYPASS_INELIGIBLE 1
2053
2054 static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2055 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2056 struct pqi_queue_group *queue_group)
2057 {
2058 struct raid_map *raid_map;
2059 bool is_write = false;
2060 u32 map_index;
2061 u64 first_block;
2062 u64 last_block;
2063 u32 block_cnt;
2064 u32 blocks_per_row;
2065 u64 first_row;
2066 u64 last_row;
2067 u32 first_row_offset;
2068 u32 last_row_offset;
2069 u32 first_column;
2070 u32 last_column;
2071 u64 r0_first_row;
2072 u64 r0_last_row;
2073 u32 r5or6_blocks_per_row;
2074 u64 r5or6_first_row;
2075 u64 r5or6_last_row;
2076 u32 r5or6_first_row_offset;
2077 u32 r5or6_last_row_offset;
2078 u32 r5or6_first_column;
2079 u32 r5or6_last_column;
2080 u16 data_disks_per_row;
2081 u32 total_disks_per_row;
2082 u16 layout_map_count;
2083 u32 stripesize;
2084 u16 strip_size;
2085 u32 first_group;
2086 u32 last_group;
2087 u32 current_group;
2088 u32 map_row;
2089 u32 aio_handle;
2090 u64 disk_block;
2091 u32 disk_block_cnt;
2092 u8 cdb[16];
2093 u8 cdb_length;
2094 int offload_to_mirror;
2095 struct pqi_encryption_info *encryption_info_ptr;
2096 struct pqi_encryption_info encryption_info;
2097 #if BITS_PER_LONG == 32
2098 u64 tmpdiv;
2099 #endif
2100
2101 /* Check for valid opcode, get LBA and block count. */
2102 switch (scmd->cmnd[0]) {
2103 case WRITE_6:
2104 is_write = true;
2105 /* fall through */
2106 case READ_6:
2107 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2108 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
2109 block_cnt = (u32)scmd->cmnd[4];
2110 if (block_cnt == 0)
2111 block_cnt = 256;
2112 break;
2113 case WRITE_10:
2114 is_write = true;
2115 /* fall through */
2116 case READ_10:
2117 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2118 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2119 break;
2120 case WRITE_12:
2121 is_write = true;
2122 /* fall through */
2123 case READ_12:
2124 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2125 block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2126 break;
2127 case WRITE_16:
2128 is_write = true;
2129 /* fall through */
2130 case READ_16:
2131 first_block = get_unaligned_be64(&scmd->cmnd[2]);
2132 block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2133 break;
2134 default:
2135 /* Process via normal I/O path. */
2136 return PQI_RAID_BYPASS_INELIGIBLE;
2137 }
2138
2139 /* Check for write to non-RAID-0. */
2140 if (is_write && device->raid_level != SA_RAID_0)
2141 return PQI_RAID_BYPASS_INELIGIBLE;
2142
2143 if (unlikely(block_cnt == 0))
2144 return PQI_RAID_BYPASS_INELIGIBLE;
2145
2146 last_block = first_block + block_cnt - 1;
2147 raid_map = device->raid_map;
2148
2149 /* Check for invalid block or wraparound. */
2150 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2151 last_block < first_block)
2152 return PQI_RAID_BYPASS_INELIGIBLE;
2153
2154 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row);
2155 strip_size = get_unaligned_le16(&raid_map->strip_size);
2156 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2157
2158 /* Calculate stripe information for the request. */
2159 blocks_per_row = data_disks_per_row * strip_size;
2160 #if BITS_PER_LONG == 32
2161 tmpdiv = first_block;
2162 do_div(tmpdiv, blocks_per_row);
2163 first_row = tmpdiv;
2164 tmpdiv = last_block;
2165 do_div(tmpdiv, blocks_per_row);
2166 last_row = tmpdiv;
2167 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2168 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2169 tmpdiv = first_row_offset;
2170 do_div(tmpdiv, strip_size);
2171 first_column = tmpdiv;
2172 tmpdiv = last_row_offset;
2173 do_div(tmpdiv, strip_size);
2174 last_column = tmpdiv;
2175 #else
2176 first_row = first_block / blocks_per_row;
2177 last_row = last_block / blocks_per_row;
2178 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2179 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2180 first_column = first_row_offset / strip_size;
2181 last_column = last_row_offset / strip_size;
2182 #endif
2183
2184 /* If this isn't a single row/column then give to the controller. */
2185 if (first_row != last_row || first_column != last_column)
2186 return PQI_RAID_BYPASS_INELIGIBLE;
2187
2188 /* Proceeding with driver mapping. */
2189 total_disks_per_row = data_disks_per_row +
2190 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2191 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2192 get_unaligned_le16(&raid_map->row_cnt);
2193 map_index = (map_row * total_disks_per_row) + first_column;
2194
2195 /* RAID 1 */
2196 if (device->raid_level == SA_RAID_1) {
2197 if (device->offload_to_mirror)
2198 map_index += data_disks_per_row;
2199 device->offload_to_mirror = !device->offload_to_mirror;
2200 } else if (device->raid_level == SA_RAID_ADM) {
2201 /* RAID ADM */
2202 /*
2203 * Handles N-way mirrors (R1-ADM) and R10 with # of drives
2204 * divisible by 3.
2205 */
2206 offload_to_mirror = device->offload_to_mirror;
2207 if (offload_to_mirror == 0) {
2208 /* use physical disk in the first mirrored group. */
2209 map_index %= data_disks_per_row;
2210 } else {
2211 do {
2212 /*
2213 * Determine mirror group that map_index
2214 * indicates.
2215 */
2216 current_group = map_index / data_disks_per_row;
2217
2218 if (offload_to_mirror != current_group) {
2219 if (current_group <
2220 layout_map_count - 1) {
2221 /*
2222 * Select raid index from
2223 * next group.
2224 */
2225 map_index += data_disks_per_row;
2226 current_group++;
2227 } else {
2228 /*
2229 * Select raid index from first
2230 * group.
2231 */
2232 map_index %= data_disks_per_row;
2233 current_group = 0;
2234 }
2235 }
2236 } while (offload_to_mirror != current_group);
2237 }
2238
2239 /* Set mirror group to use next time. */
2240 offload_to_mirror =
2241 (offload_to_mirror >= layout_map_count - 1) ?
2242 0 : offload_to_mirror + 1;
2243 WARN_ON(offload_to_mirror >= layout_map_count);
2244 device->offload_to_mirror = offload_to_mirror;
2245 /*
2246 * Avoid direct use of device->offload_to_mirror within this
2247 * function since multiple threads might simultaneously
2248 * increment it beyond the range of device->layout_map_count -1.
2249 */
2250 } else if ((device->raid_level == SA_RAID_5 ||
2251 device->raid_level == SA_RAID_6) && layout_map_count > 1) {
2252 /* RAID 50/60 */
2253 /* Verify first and last block are in same RAID group */
2254 r5or6_blocks_per_row = strip_size * data_disks_per_row;
2255 stripesize = r5or6_blocks_per_row * layout_map_count;
2256 #if BITS_PER_LONG == 32
2257 tmpdiv = first_block;
2258 first_group = do_div(tmpdiv, stripesize);
2259 tmpdiv = first_group;
2260 do_div(tmpdiv, r5or6_blocks_per_row);
2261 first_group = tmpdiv;
2262 tmpdiv = last_block;
2263 last_group = do_div(tmpdiv, stripesize);
2264 tmpdiv = last_group;
2265 do_div(tmpdiv, r5or6_blocks_per_row);
2266 last_group = tmpdiv;
2267 #else
2268 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
2269 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
2270 #endif
2271 if (first_group != last_group)
2272 return PQI_RAID_BYPASS_INELIGIBLE;
2273
2274 /* Verify request is in a single row of RAID 5/6 */
2275 #if BITS_PER_LONG == 32
2276 tmpdiv = first_block;
2277 do_div(tmpdiv, stripesize);
2278 first_row = r5or6_first_row = r0_first_row = tmpdiv;
2279 tmpdiv = last_block;
2280 do_div(tmpdiv, stripesize);
2281 r5or6_last_row = r0_last_row = tmpdiv;
2282 #else
2283 first_row = r5or6_first_row = r0_first_row =
2284 first_block / stripesize;
2285 r5or6_last_row = r0_last_row = last_block / stripesize;
2286 #endif
2287 if (r5or6_first_row != r5or6_last_row)
2288 return PQI_RAID_BYPASS_INELIGIBLE;
2289
2290 /* Verify request is in a single column */
2291 #if BITS_PER_LONG == 32
2292 tmpdiv = first_block;
2293 first_row_offset = do_div(tmpdiv, stripesize);
2294 tmpdiv = first_row_offset;
2295 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row);
2296 r5or6_first_row_offset = first_row_offset;
2297 tmpdiv = last_block;
2298 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
2299 tmpdiv = r5or6_last_row_offset;
2300 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
2301 tmpdiv = r5or6_first_row_offset;
2302 do_div(tmpdiv, strip_size);
2303 first_column = r5or6_first_column = tmpdiv;
2304 tmpdiv = r5or6_last_row_offset;
2305 do_div(tmpdiv, strip_size);
2306 r5or6_last_column = tmpdiv;
2307 #else
2308 first_row_offset = r5or6_first_row_offset =
2309 (u32)((first_block % stripesize) %
2310 r5or6_blocks_per_row);
2311
2312 r5or6_last_row_offset =
2313 (u32)((last_block % stripesize) %
2314 r5or6_blocks_per_row);
2315
2316 first_column = r5or6_first_row_offset / strip_size;
2317 r5or6_first_column = first_column;
2318 r5or6_last_column = r5or6_last_row_offset / strip_size;
2319 #endif
2320 if (r5or6_first_column != r5or6_last_column)
2321 return PQI_RAID_BYPASS_INELIGIBLE;
2322
2323 /* Request is eligible */
2324 map_row =
2325 ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2326 get_unaligned_le16(&raid_map->row_cnt);
2327
2328 map_index = (first_group *
2329 (get_unaligned_le16(&raid_map->row_cnt) *
2330 total_disks_per_row)) +
2331 (map_row * total_disks_per_row) + first_column;
2332 }
2333
2334 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
2335 return PQI_RAID_BYPASS_INELIGIBLE;
2336
2337 aio_handle = raid_map->disk_data[map_index].aio_handle;
2338 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2339 first_row * strip_size +
2340 (first_row_offset - first_column * strip_size);
2341 disk_block_cnt = block_cnt;
2342
2343 /* Handle differing logical/physical block sizes. */
2344 if (raid_map->phys_blk_shift) {
2345 disk_block <<= raid_map->phys_blk_shift;
2346 disk_block_cnt <<= raid_map->phys_blk_shift;
2347 }
2348
2349 if (unlikely(disk_block_cnt > 0xffff))
2350 return PQI_RAID_BYPASS_INELIGIBLE;
2351
2352 /* Build the new CDB for the physical disk I/O. */
2353 if (disk_block > 0xffffffff) {
2354 cdb[0] = is_write ? WRITE_16 : READ_16;
2355 cdb[1] = 0;
2356 put_unaligned_be64(disk_block, &cdb[2]);
2357 put_unaligned_be32(disk_block_cnt, &cdb[10]);
2358 cdb[14] = 0;
2359 cdb[15] = 0;
2360 cdb_length = 16;
2361 } else {
2362 cdb[0] = is_write ? WRITE_10 : READ_10;
2363 cdb[1] = 0;
2364 put_unaligned_be32((u32)disk_block, &cdb[2]);
2365 cdb[6] = 0;
2366 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]);
2367 cdb[9] = 0;
2368 cdb_length = 10;
2369 }
2370
2371 if (get_unaligned_le16(&raid_map->flags) &
2372 RAID_MAP_ENCRYPTION_ENABLED) {
2373 pqi_set_encryption_info(&encryption_info, raid_map,
2374 first_block);
2375 encryption_info_ptr = &encryption_info;
2376 } else {
2377 encryption_info_ptr = NULL;
2378 }
2379
2380 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
2381 cdb, cdb_length, queue_group, encryption_info_ptr, true);
2382 }
2383
2384 #define PQI_STATUS_IDLE 0x0
2385
2386 #define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2387 #define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2388
2389 #define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2390 #define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2391 #define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2392 #define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2393 #define PQI_DEVICE_STATE_ERROR 0x4
2394
2395 #define PQI_MODE_READY_TIMEOUT_SECS 30
2396 #define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2397
2398 static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2399 {
2400 struct pqi_device_registers __iomem *pqi_registers;
2401 unsigned long timeout;
2402 u64 signature;
2403 u8 status;
2404
2405 pqi_registers = ctrl_info->pqi_registers;
2406 timeout = (PQI_MODE_READY_TIMEOUT_SECS * HZ) + jiffies;
2407
2408 while (1) {
2409 signature = readq(&pqi_registers->signature);
2410 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2411 sizeof(signature)) == 0)
2412 break;
2413 if (time_after(jiffies, timeout)) {
2414 dev_err(&ctrl_info->pci_dev->dev,
2415 "timed out waiting for PQI signature\n");
2416 return -ETIMEDOUT;
2417 }
2418 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2419 }
2420
2421 while (1) {
2422 status = readb(&pqi_registers->function_and_status_code);
2423 if (status == PQI_STATUS_IDLE)
2424 break;
2425 if (time_after(jiffies, timeout)) {
2426 dev_err(&ctrl_info->pci_dev->dev,
2427 "timed out waiting for PQI IDLE\n");
2428 return -ETIMEDOUT;
2429 }
2430 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2431 }
2432
2433 while (1) {
2434 if (readl(&pqi_registers->device_status) ==
2435 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2436 break;
2437 if (time_after(jiffies, timeout)) {
2438 dev_err(&ctrl_info->pci_dev->dev,
2439 "timed out waiting for PQI all registers ready\n");
2440 return -ETIMEDOUT;
2441 }
2442 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2443 }
2444
2445 return 0;
2446 }
2447
2448 static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2449 {
2450 struct pqi_scsi_dev *device;
2451
2452 device = io_request->scmd->device->hostdata;
2453 device->raid_bypass_enabled = false;
2454 device->aio_enabled = false;
2455 }
2456
2457 static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
2458 {
2459 struct pqi_ctrl_info *ctrl_info;
2460 struct pqi_scsi_dev *device;
2461
2462 device = sdev->hostdata;
2463 if (device->device_offline)
2464 return;
2465
2466 device->device_offline = true;
2467 scsi_device_set_state(sdev, SDEV_OFFLINE);
2468 ctrl_info = shost_to_hba(sdev->host);
2469 pqi_schedule_rescan_worker(ctrl_info);
2470 dev_err(&ctrl_info->pci_dev->dev, "offlined %s scsi %d:%d:%d:%d\n",
2471 path, ctrl_info->scsi_host->host_no, device->bus,
2472 device->target, device->lun);
2473 }
2474
2475 static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2476 {
2477 u8 scsi_status;
2478 u8 host_byte;
2479 struct scsi_cmnd *scmd;
2480 struct pqi_raid_error_info *error_info;
2481 size_t sense_data_length;
2482 int residual_count;
2483 int xfer_count;
2484 struct scsi_sense_hdr sshdr;
2485
2486 scmd = io_request->scmd;
2487 if (!scmd)
2488 return;
2489
2490 error_info = io_request->error_info;
2491 scsi_status = error_info->status;
2492 host_byte = DID_OK;
2493
2494 switch (error_info->data_out_result) {
2495 case PQI_DATA_IN_OUT_GOOD:
2496 break;
2497 case PQI_DATA_IN_OUT_UNDERFLOW:
2498 xfer_count =
2499 get_unaligned_le32(&error_info->data_out_transferred);
2500 residual_count = scsi_bufflen(scmd) - xfer_count;
2501 scsi_set_resid(scmd, residual_count);
2502 if (xfer_count < scmd->underflow)
2503 host_byte = DID_SOFT_ERROR;
2504 break;
2505 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
2506 case PQI_DATA_IN_OUT_ABORTED:
2507 host_byte = DID_ABORT;
2508 break;
2509 case PQI_DATA_IN_OUT_TIMEOUT:
2510 host_byte = DID_TIME_OUT;
2511 break;
2512 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
2513 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
2514 case PQI_DATA_IN_OUT_BUFFER_ERROR:
2515 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
2516 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
2517 case PQI_DATA_IN_OUT_ERROR:
2518 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
2519 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
2520 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
2521 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
2522 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
2523 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
2524 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
2525 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
2526 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
2527 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
2528 default:
2529 host_byte = DID_ERROR;
2530 break;
2531 }
2532
2533 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2534 if (sense_data_length == 0)
2535 sense_data_length =
2536 get_unaligned_le16(&error_info->response_data_length);
2537 if (sense_data_length) {
2538 if (sense_data_length > sizeof(error_info->data))
2539 sense_data_length = sizeof(error_info->data);
2540
2541 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2542 scsi_normalize_sense(error_info->data,
2543 sense_data_length, &sshdr) &&
2544 sshdr.sense_key == HARDWARE_ERROR &&
2545 sshdr.asc == 0x3e &&
2546 sshdr.ascq == 0x1) {
2547 pqi_take_device_offline(scmd->device, "RAID");
2548 host_byte = DID_NO_CONNECT;
2549 }
2550
2551 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2552 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2553 memcpy(scmd->sense_buffer, error_info->data,
2554 sense_data_length);
2555 }
2556
2557 scmd->result = scsi_status;
2558 set_host_byte(scmd, host_byte);
2559 }
2560
2561 static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2562 {
2563 u8 scsi_status;
2564 u8 host_byte;
2565 struct scsi_cmnd *scmd;
2566 struct pqi_aio_error_info *error_info;
2567 size_t sense_data_length;
2568 int residual_count;
2569 int xfer_count;
2570 bool device_offline;
2571
2572 scmd = io_request->scmd;
2573 error_info = io_request->error_info;
2574 host_byte = DID_OK;
2575 sense_data_length = 0;
2576 device_offline = false;
2577
2578 switch (error_info->service_response) {
2579 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2580 scsi_status = error_info->status;
2581 break;
2582 case PQI_AIO_SERV_RESPONSE_FAILURE:
2583 switch (error_info->status) {
2584 case PQI_AIO_STATUS_IO_ABORTED:
2585 scsi_status = SAM_STAT_TASK_ABORTED;
2586 break;
2587 case PQI_AIO_STATUS_UNDERRUN:
2588 scsi_status = SAM_STAT_GOOD;
2589 residual_count = get_unaligned_le32(
2590 &error_info->residual_count);
2591 scsi_set_resid(scmd, residual_count);
2592 xfer_count = scsi_bufflen(scmd) - residual_count;
2593 if (xfer_count < scmd->underflow)
2594 host_byte = DID_SOFT_ERROR;
2595 break;
2596 case PQI_AIO_STATUS_OVERRUN:
2597 scsi_status = SAM_STAT_GOOD;
2598 break;
2599 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2600 pqi_aio_path_disabled(io_request);
2601 scsi_status = SAM_STAT_GOOD;
2602 io_request->status = -EAGAIN;
2603 break;
2604 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
2605 case PQI_AIO_STATUS_INVALID_DEVICE:
2606 if (!io_request->raid_bypass) {
2607 device_offline = true;
2608 pqi_take_device_offline(scmd->device, "AIO");
2609 host_byte = DID_NO_CONNECT;
2610 }
2611 scsi_status = SAM_STAT_CHECK_CONDITION;
2612 break;
2613 case PQI_AIO_STATUS_IO_ERROR:
2614 default:
2615 scsi_status = SAM_STAT_CHECK_CONDITION;
2616 break;
2617 }
2618 break;
2619 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
2620 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
2621 scsi_status = SAM_STAT_GOOD;
2622 break;
2623 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
2624 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
2625 default:
2626 scsi_status = SAM_STAT_CHECK_CONDITION;
2627 break;
2628 }
2629
2630 if (error_info->data_present) {
2631 sense_data_length =
2632 get_unaligned_le16(&error_info->data_length);
2633 if (sense_data_length) {
2634 if (sense_data_length > sizeof(error_info->data))
2635 sense_data_length = sizeof(error_info->data);
2636 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2637 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2638 memcpy(scmd->sense_buffer, error_info->data,
2639 sense_data_length);
2640 }
2641 }
2642
2643 if (device_offline && sense_data_length == 0)
2644 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
2645 0x3e, 0x1);
2646
2647 scmd->result = scsi_status;
2648 set_host_byte(scmd, host_byte);
2649 }
2650
2651 static void pqi_process_io_error(unsigned int iu_type,
2652 struct pqi_io_request *io_request)
2653 {
2654 switch (iu_type) {
2655 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2656 pqi_process_raid_io_error(io_request);
2657 break;
2658 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2659 pqi_process_aio_io_error(io_request);
2660 break;
2661 }
2662 }
2663
2664 static int pqi_interpret_task_management_response(
2665 struct pqi_task_management_response *response)
2666 {
2667 int rc;
2668
2669 switch (response->response_code) {
2670 case SOP_TMF_COMPLETE:
2671 case SOP_TMF_FUNCTION_SUCCEEDED:
2672 rc = 0;
2673 break;
2674 default:
2675 rc = -EIO;
2676 break;
2677 }
2678
2679 return rc;
2680 }
2681
2682 static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info,
2683 struct pqi_queue_group *queue_group)
2684 {
2685 unsigned int num_responses;
2686 pqi_index_t oq_pi;
2687 pqi_index_t oq_ci;
2688 struct pqi_io_request *io_request;
2689 struct pqi_io_response *response;
2690 u16 request_id;
2691
2692 num_responses = 0;
2693 oq_ci = queue_group->oq_ci_copy;
2694
2695 while (1) {
2696 oq_pi = *queue_group->oq_pi;
2697 if (oq_pi == oq_ci)
2698 break;
2699
2700 num_responses++;
2701 response = queue_group->oq_element_array +
2702 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
2703
2704 request_id = get_unaligned_le16(&response->request_id);
2705 WARN_ON(request_id >= ctrl_info->max_io_slots);
2706
2707 io_request = &ctrl_info->io_request_pool[request_id];
2708 WARN_ON(atomic_read(&io_request->refcount) == 0);
2709
2710 switch (response->header.iu_type) {
2711 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
2712 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2713 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
2714 break;
2715 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
2716 io_request->status =
2717 pqi_interpret_task_management_response(
2718 (void *)response);
2719 break;
2720 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
2721 pqi_aio_path_disabled(io_request);
2722 io_request->status = -EAGAIN;
2723 break;
2724 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2725 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2726 io_request->error_info = ctrl_info->error_buffer +
2727 (get_unaligned_le16(&response->error_index) *
2728 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
2729 pqi_process_io_error(response->header.iu_type,
2730 io_request);
2731 break;
2732 default:
2733 dev_err(&ctrl_info->pci_dev->dev,
2734 "unexpected IU type: 0x%x\n",
2735 response->header.iu_type);
2736 break;
2737 }
2738
2739 io_request->io_complete_callback(io_request,
2740 io_request->context);
2741
2742 /*
2743 * Note that the I/O request structure CANNOT BE TOUCHED after
2744 * returning from the I/O completion callback!
2745 */
2746
2747 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
2748 }
2749
2750 if (num_responses) {
2751 queue_group->oq_ci_copy = oq_ci;
2752 writel(oq_ci, queue_group->oq_ci);
2753 }
2754
2755 return num_responses;
2756 }
2757
2758 static inline unsigned int pqi_num_elements_free(unsigned int pi,
2759 unsigned int ci, unsigned int elements_in_queue)
2760 {
2761 unsigned int num_elements_used;
2762
2763 if (pi >= ci)
2764 num_elements_used = pi - ci;
2765 else
2766 num_elements_used = elements_in_queue - ci + pi;
2767
2768 return elements_in_queue - num_elements_used - 1;
2769 }
2770
2771 static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
2772 struct pqi_event_acknowledge_request *iu, size_t iu_length)
2773 {
2774 pqi_index_t iq_pi;
2775 pqi_index_t iq_ci;
2776 unsigned long flags;
2777 void *next_element;
2778 struct pqi_queue_group *queue_group;
2779
2780 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
2781 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
2782
2783 while (1) {
2784 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
2785
2786 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
2787 iq_ci = *queue_group->iq_ci[RAID_PATH];
2788
2789 if (pqi_num_elements_free(iq_pi, iq_ci,
2790 ctrl_info->num_elements_per_iq))
2791 break;
2792
2793 spin_unlock_irqrestore(
2794 &queue_group->submit_lock[RAID_PATH], flags);
2795
2796 if (pqi_ctrl_offline(ctrl_info))
2797 return;
2798 }
2799
2800 next_element = queue_group->iq_element_array[RAID_PATH] +
2801 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
2802
2803 memcpy(next_element, iu, iu_length);
2804
2805 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
2806 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
2807
2808 /*
2809 * This write notifies the controller that an IU is available to be
2810 * processed.
2811 */
2812 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
2813
2814 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
2815 }
2816
2817 static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
2818 struct pqi_event *event)
2819 {
2820 struct pqi_event_acknowledge_request request;
2821
2822 memset(&request, 0, sizeof(request));
2823
2824 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
2825 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
2826 &request.header.iu_length);
2827 request.event_type = event->event_type;
2828 request.event_id = event->event_id;
2829 request.additional_event_id = event->additional_event_id;
2830
2831 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
2832 }
2833
2834 static void pqi_event_worker(struct work_struct *work)
2835 {
2836 unsigned int i;
2837 struct pqi_ctrl_info *ctrl_info;
2838 struct pqi_event *event;
2839
2840 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
2841
2842 pqi_ctrl_busy(ctrl_info);
2843 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
2844 if (pqi_ctrl_offline(ctrl_info))
2845 goto out;
2846
2847 pqi_schedule_rescan_worker_delayed(ctrl_info);
2848
2849 event = ctrl_info->events;
2850 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
2851 if (event->pending) {
2852 event->pending = false;
2853 pqi_acknowledge_event(ctrl_info, event);
2854 }
2855 event++;
2856 }
2857
2858 out:
2859 pqi_ctrl_unbusy(ctrl_info);
2860 }
2861
2862 #define PQI_HEARTBEAT_TIMER_INTERVAL (10 * HZ)
2863
2864 static void pqi_heartbeat_timer_handler(struct timer_list *t)
2865 {
2866 int num_interrupts;
2867 u32 heartbeat_count;
2868 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t,
2869 heartbeat_timer);
2870
2871 pqi_check_ctrl_health(ctrl_info);
2872 if (pqi_ctrl_offline(ctrl_info))
2873 return;
2874
2875 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
2876 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
2877
2878 if (num_interrupts == ctrl_info->previous_num_interrupts) {
2879 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
2880 dev_err(&ctrl_info->pci_dev->dev,
2881 "no heartbeat detected - last heartbeat count: %u\n",
2882 heartbeat_count);
2883 pqi_take_ctrl_offline(ctrl_info);
2884 return;
2885 }
2886 } else {
2887 ctrl_info->previous_num_interrupts = num_interrupts;
2888 }
2889
2890 ctrl_info->previous_heartbeat_count = heartbeat_count;
2891 mod_timer(&ctrl_info->heartbeat_timer,
2892 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
2893 }
2894
2895 static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
2896 {
2897 if (!ctrl_info->heartbeat_counter)
2898 return;
2899
2900 ctrl_info->previous_num_interrupts =
2901 atomic_read(&ctrl_info->num_interrupts);
2902 ctrl_info->previous_heartbeat_count =
2903 pqi_read_heartbeat_counter(ctrl_info);
2904
2905 ctrl_info->heartbeat_timer.expires =
2906 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
2907 add_timer(&ctrl_info->heartbeat_timer);
2908 }
2909
2910 static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
2911 {
2912 del_timer_sync(&ctrl_info->heartbeat_timer);
2913 }
2914
2915 static inline int pqi_event_type_to_event_index(unsigned int event_type)
2916 {
2917 int index;
2918
2919 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
2920 if (event_type == pqi_supported_event_types[index])
2921 return index;
2922
2923 return -1;
2924 }
2925
2926 static inline bool pqi_is_supported_event(unsigned int event_type)
2927 {
2928 return pqi_event_type_to_event_index(event_type) != -1;
2929 }
2930
2931 static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
2932 {
2933 unsigned int num_events;
2934 pqi_index_t oq_pi;
2935 pqi_index_t oq_ci;
2936 struct pqi_event_queue *event_queue;
2937 struct pqi_event_response *response;
2938 struct pqi_event *event;
2939 int event_index;
2940
2941 event_queue = &ctrl_info->event_queue;
2942 num_events = 0;
2943 oq_ci = event_queue->oq_ci_copy;
2944
2945 while (1) {
2946 oq_pi = *event_queue->oq_pi;
2947 if (oq_pi == oq_ci)
2948 break;
2949
2950 num_events++;
2951 response = event_queue->oq_element_array +
2952 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
2953
2954 event_index =
2955 pqi_event_type_to_event_index(response->event_type);
2956
2957 if (event_index >= 0) {
2958 if (response->request_acknowlege) {
2959 event = &ctrl_info->events[event_index];
2960 event->pending = true;
2961 event->event_type = response->event_type;
2962 event->event_id = response->event_id;
2963 event->additional_event_id =
2964 response->additional_event_id;
2965 }
2966 }
2967
2968 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
2969 }
2970
2971 if (num_events) {
2972 event_queue->oq_ci_copy = oq_ci;
2973 writel(oq_ci, event_queue->oq_ci);
2974 schedule_work(&ctrl_info->event_work);
2975 }
2976
2977 return num_events;
2978 }
2979
2980 #define PQI_LEGACY_INTX_MASK 0x1
2981
2982 static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info,
2983 bool enable_intx)
2984 {
2985 u32 intx_mask;
2986 struct pqi_device_registers __iomem *pqi_registers;
2987 volatile void __iomem *register_addr;
2988
2989 pqi_registers = ctrl_info->pqi_registers;
2990
2991 if (enable_intx)
2992 register_addr = &pqi_registers->legacy_intx_mask_clear;
2993 else
2994 register_addr = &pqi_registers->legacy_intx_mask_set;
2995
2996 intx_mask = readl(register_addr);
2997 intx_mask |= PQI_LEGACY_INTX_MASK;
2998 writel(intx_mask, register_addr);
2999 }
3000
3001 static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3002 enum pqi_irq_mode new_mode)
3003 {
3004 switch (ctrl_info->irq_mode) {
3005 case IRQ_MODE_MSIX:
3006 switch (new_mode) {
3007 case IRQ_MODE_MSIX:
3008 break;
3009 case IRQ_MODE_INTX:
3010 pqi_configure_legacy_intx(ctrl_info, true);
3011 sis_enable_intx(ctrl_info);
3012 break;
3013 case IRQ_MODE_NONE:
3014 break;
3015 }
3016 break;
3017 case IRQ_MODE_INTX:
3018 switch (new_mode) {
3019 case IRQ_MODE_MSIX:
3020 pqi_configure_legacy_intx(ctrl_info, false);
3021 sis_enable_msix(ctrl_info);
3022 break;
3023 case IRQ_MODE_INTX:
3024 break;
3025 case IRQ_MODE_NONE:
3026 pqi_configure_legacy_intx(ctrl_info, false);
3027 break;
3028 }
3029 break;
3030 case IRQ_MODE_NONE:
3031 switch (new_mode) {
3032 case IRQ_MODE_MSIX:
3033 sis_enable_msix(ctrl_info);
3034 break;
3035 case IRQ_MODE_INTX:
3036 pqi_configure_legacy_intx(ctrl_info, true);
3037 sis_enable_intx(ctrl_info);
3038 break;
3039 case IRQ_MODE_NONE:
3040 break;
3041 }
3042 break;
3043 }
3044
3045 ctrl_info->irq_mode = new_mode;
3046 }
3047
3048 #define PQI_LEGACY_INTX_PENDING 0x1
3049
3050 static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3051 {
3052 bool valid_irq;
3053 u32 intx_status;
3054
3055 switch (ctrl_info->irq_mode) {
3056 case IRQ_MODE_MSIX:
3057 valid_irq = true;
3058 break;
3059 case IRQ_MODE_INTX:
3060 intx_status =
3061 readl(&ctrl_info->pqi_registers->legacy_intx_status);
3062 if (intx_status & PQI_LEGACY_INTX_PENDING)
3063 valid_irq = true;
3064 else
3065 valid_irq = false;
3066 break;
3067 case IRQ_MODE_NONE:
3068 default:
3069 valid_irq = false;
3070 break;
3071 }
3072
3073 return valid_irq;
3074 }
3075
3076 static irqreturn_t pqi_irq_handler(int irq, void *data)
3077 {
3078 struct pqi_ctrl_info *ctrl_info;
3079 struct pqi_queue_group *queue_group;
3080 unsigned int num_responses_handled;
3081
3082 queue_group = data;
3083 ctrl_info = queue_group->ctrl_info;
3084
3085 if (!pqi_is_valid_irq(ctrl_info))
3086 return IRQ_NONE;
3087
3088 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3089
3090 if (irq == ctrl_info->event_irq)
3091 num_responses_handled += pqi_process_event_intr(ctrl_info);
3092
3093 if (num_responses_handled)
3094 atomic_inc(&ctrl_info->num_interrupts);
3095
3096 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3097 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3098
3099 return IRQ_HANDLED;
3100 }
3101
3102 static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3103 {
3104 struct pci_dev *pci_dev = ctrl_info->pci_dev;
3105 int i;
3106 int rc;
3107
3108 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
3109
3110 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
3111 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
3112 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
3113 if (rc) {
3114 dev_err(&pci_dev->dev,
3115 "irq %u init failed with error %d\n",
3116 pci_irq_vector(pci_dev, i), rc);
3117 return rc;
3118 }
3119 ctrl_info->num_msix_vectors_initialized++;
3120 }
3121
3122 return 0;
3123 }
3124
3125 static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3126 {
3127 int i;
3128
3129 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3130 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3131 &ctrl_info->queue_groups[i]);
3132
3133 ctrl_info->num_msix_vectors_initialized = 0;
3134 }
3135
3136 static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3137 {
3138 int num_vectors_enabled;
3139
3140 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
3141 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3142 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
3143 if (num_vectors_enabled < 0) {
3144 dev_err(&ctrl_info->pci_dev->dev,
3145 "MSI-X init failed with error %d\n",
3146 num_vectors_enabled);
3147 return num_vectors_enabled;
3148 }
3149
3150 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
3151 ctrl_info->irq_mode = IRQ_MODE_MSIX;
3152 return 0;
3153 }
3154
3155 static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3156 {
3157 if (ctrl_info->num_msix_vectors_enabled) {
3158 pci_free_irq_vectors(ctrl_info->pci_dev);
3159 ctrl_info->num_msix_vectors_enabled = 0;
3160 }
3161 }
3162
3163 static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3164 {
3165 unsigned int i;
3166 size_t alloc_length;
3167 size_t element_array_length_per_iq;
3168 size_t element_array_length_per_oq;
3169 void *element_array;
3170 void *next_queue_index;
3171 void *aligned_pointer;
3172 unsigned int num_inbound_queues;
3173 unsigned int num_outbound_queues;
3174 unsigned int num_queue_indexes;
3175 struct pqi_queue_group *queue_group;
3176
3177 element_array_length_per_iq =
3178 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3179 ctrl_info->num_elements_per_iq;
3180 element_array_length_per_oq =
3181 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3182 ctrl_info->num_elements_per_oq;
3183 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3184 num_outbound_queues = ctrl_info->num_queue_groups;
3185 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3186
3187 aligned_pointer = NULL;
3188
3189 for (i = 0; i < num_inbound_queues; i++) {
3190 aligned_pointer = PTR_ALIGN(aligned_pointer,
3191 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3192 aligned_pointer += element_array_length_per_iq;
3193 }
3194
3195 for (i = 0; i < num_outbound_queues; i++) {
3196 aligned_pointer = PTR_ALIGN(aligned_pointer,
3197 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3198 aligned_pointer += element_array_length_per_oq;
3199 }
3200
3201 aligned_pointer = PTR_ALIGN(aligned_pointer,
3202 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3203 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3204 PQI_EVENT_OQ_ELEMENT_LENGTH;
3205
3206 for (i = 0; i < num_queue_indexes; i++) {
3207 aligned_pointer = PTR_ALIGN(aligned_pointer,
3208 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3209 aligned_pointer += sizeof(pqi_index_t);
3210 }
3211
3212 alloc_length = (size_t)aligned_pointer +
3213 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3214
3215 alloc_length += PQI_EXTRA_SGL_MEMORY;
3216
3217 ctrl_info->queue_memory_base =
3218 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3219 alloc_length,
3220 &ctrl_info->queue_memory_base_dma_handle, GFP_KERNEL);
3221
3222 if (!ctrl_info->queue_memory_base)
3223 return -ENOMEM;
3224
3225 ctrl_info->queue_memory_length = alloc_length;
3226
3227 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3228 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3229
3230 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3231 queue_group = &ctrl_info->queue_groups[i];
3232 queue_group->iq_element_array[RAID_PATH] = element_array;
3233 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3234 ctrl_info->queue_memory_base_dma_handle +
3235 (element_array - ctrl_info->queue_memory_base);
3236 element_array += element_array_length_per_iq;
3237 element_array = PTR_ALIGN(element_array,
3238 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3239 queue_group->iq_element_array[AIO_PATH] = element_array;
3240 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3241 ctrl_info->queue_memory_base_dma_handle +
3242 (element_array - ctrl_info->queue_memory_base);
3243 element_array += element_array_length_per_iq;
3244 element_array = PTR_ALIGN(element_array,
3245 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3246 }
3247
3248 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3249 queue_group = &ctrl_info->queue_groups[i];
3250 queue_group->oq_element_array = element_array;
3251 queue_group->oq_element_array_bus_addr =
3252 ctrl_info->queue_memory_base_dma_handle +
3253 (element_array - ctrl_info->queue_memory_base);
3254 element_array += element_array_length_per_oq;
3255 element_array = PTR_ALIGN(element_array,
3256 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3257 }
3258
3259 ctrl_info->event_queue.oq_element_array = element_array;
3260 ctrl_info->event_queue.oq_element_array_bus_addr =
3261 ctrl_info->queue_memory_base_dma_handle +
3262 (element_array - ctrl_info->queue_memory_base);
3263 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3264 PQI_EVENT_OQ_ELEMENT_LENGTH;
3265
3266 next_queue_index = PTR_ALIGN(element_array,
3267 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3268
3269 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3270 queue_group = &ctrl_info->queue_groups[i];
3271 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3272 queue_group->iq_ci_bus_addr[RAID_PATH] =
3273 ctrl_info->queue_memory_base_dma_handle +
3274 (next_queue_index - ctrl_info->queue_memory_base);
3275 next_queue_index += sizeof(pqi_index_t);
3276 next_queue_index = PTR_ALIGN(next_queue_index,
3277 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3278 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3279 queue_group->iq_ci_bus_addr[AIO_PATH] =
3280 ctrl_info->queue_memory_base_dma_handle +
3281 (next_queue_index - ctrl_info->queue_memory_base);
3282 next_queue_index += sizeof(pqi_index_t);
3283 next_queue_index = PTR_ALIGN(next_queue_index,
3284 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3285 queue_group->oq_pi = next_queue_index;
3286 queue_group->oq_pi_bus_addr =
3287 ctrl_info->queue_memory_base_dma_handle +
3288 (next_queue_index - ctrl_info->queue_memory_base);
3289 next_queue_index += sizeof(pqi_index_t);
3290 next_queue_index = PTR_ALIGN(next_queue_index,
3291 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3292 }
3293
3294 ctrl_info->event_queue.oq_pi = next_queue_index;
3295 ctrl_info->event_queue.oq_pi_bus_addr =
3296 ctrl_info->queue_memory_base_dma_handle +
3297 (next_queue_index - ctrl_info->queue_memory_base);
3298
3299 return 0;
3300 }
3301
3302 static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3303 {
3304 unsigned int i;
3305 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3306 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3307
3308 /*
3309 * Initialize the backpointers to the controller structure in
3310 * each operational queue group structure.
3311 */
3312 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3313 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3314
3315 /*
3316 * Assign IDs to all operational queues. Note that the IDs
3317 * assigned to operational IQs are independent of the IDs
3318 * assigned to operational OQs.
3319 */
3320 ctrl_info->event_queue.oq_id = next_oq_id++;
3321 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3322 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3323 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3324 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3325 }
3326
3327 /*
3328 * Assign MSI-X table entry indexes to all queues. Note that the
3329 * interrupt for the event queue is shared with the first queue group.
3330 */
3331 ctrl_info->event_queue.int_msg_num = 0;
3332 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3333 ctrl_info->queue_groups[i].int_msg_num = i;
3334
3335 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3336 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3337 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3338 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3339 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3340 }
3341 }
3342
3343 static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3344 {
3345 size_t alloc_length;
3346 struct pqi_admin_queues_aligned *admin_queues_aligned;
3347 struct pqi_admin_queues *admin_queues;
3348
3349 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3350 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3351
3352 ctrl_info->admin_queue_memory_base =
3353 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3354 alloc_length,
3355 &ctrl_info->admin_queue_memory_base_dma_handle,
3356 GFP_KERNEL);
3357
3358 if (!ctrl_info->admin_queue_memory_base)
3359 return -ENOMEM;
3360
3361 ctrl_info->admin_queue_memory_length = alloc_length;
3362
3363 admin_queues = &ctrl_info->admin_queues;
3364 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3365 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3366 admin_queues->iq_element_array =
3367 &admin_queues_aligned->iq_element_array;
3368 admin_queues->oq_element_array =
3369 &admin_queues_aligned->oq_element_array;
3370 admin_queues->iq_ci = &admin_queues_aligned->iq_ci;
3371 admin_queues->oq_pi = &admin_queues_aligned->oq_pi;
3372
3373 admin_queues->iq_element_array_bus_addr =
3374 ctrl_info->admin_queue_memory_base_dma_handle +
3375 (admin_queues->iq_element_array -
3376 ctrl_info->admin_queue_memory_base);
3377 admin_queues->oq_element_array_bus_addr =
3378 ctrl_info->admin_queue_memory_base_dma_handle +
3379 (admin_queues->oq_element_array -
3380 ctrl_info->admin_queue_memory_base);
3381 admin_queues->iq_ci_bus_addr =
3382 ctrl_info->admin_queue_memory_base_dma_handle +
3383 ((void *)admin_queues->iq_ci -
3384 ctrl_info->admin_queue_memory_base);
3385 admin_queues->oq_pi_bus_addr =
3386 ctrl_info->admin_queue_memory_base_dma_handle +
3387 ((void *)admin_queues->oq_pi -
3388 ctrl_info->admin_queue_memory_base);
3389
3390 return 0;
3391 }
3392
3393 #define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES HZ
3394 #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3395
3396 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3397 {
3398 struct pqi_device_registers __iomem *pqi_registers;
3399 struct pqi_admin_queues *admin_queues;
3400 unsigned long timeout;
3401 u8 status;
3402 u32 reg;
3403
3404 pqi_registers = ctrl_info->pqi_registers;
3405 admin_queues = &ctrl_info->admin_queues;
3406
3407 writeq((u64)admin_queues->iq_element_array_bus_addr,
3408 &pqi_registers->admin_iq_element_array_addr);
3409 writeq((u64)admin_queues->oq_element_array_bus_addr,
3410 &pqi_registers->admin_oq_element_array_addr);
3411 writeq((u64)admin_queues->iq_ci_bus_addr,
3412 &pqi_registers->admin_iq_ci_addr);
3413 writeq((u64)admin_queues->oq_pi_bus_addr,
3414 &pqi_registers->admin_oq_pi_addr);
3415
3416 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
3417 (PQI_ADMIN_OQ_NUM_ELEMENTS) << 8 |
3418 (admin_queues->int_msg_num << 16);
3419 writel(reg, &pqi_registers->admin_iq_num_elements);
3420 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3421 &pqi_registers->function_and_status_code);
3422
3423 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3424 while (1) {
3425 status = readb(&pqi_registers->function_and_status_code);
3426 if (status == PQI_STATUS_IDLE)
3427 break;
3428 if (time_after(jiffies, timeout))
3429 return -ETIMEDOUT;
3430 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
3431 }
3432
3433 /*
3434 * The offset registers are not initialized to the correct
3435 * offsets until *after* the create admin queue pair command
3436 * completes successfully.
3437 */
3438 admin_queues->iq_pi = ctrl_info->iomem_base +
3439 PQI_DEVICE_REGISTERS_OFFSET +
3440 readq(&pqi_registers->admin_iq_pi_offset);
3441 admin_queues->oq_ci = ctrl_info->iomem_base +
3442 PQI_DEVICE_REGISTERS_OFFSET +
3443 readq(&pqi_registers->admin_oq_ci_offset);
3444
3445 return 0;
3446 }
3447
3448 static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
3449 struct pqi_general_admin_request *request)
3450 {
3451 struct pqi_admin_queues *admin_queues;
3452 void *next_element;
3453 pqi_index_t iq_pi;
3454
3455 admin_queues = &ctrl_info->admin_queues;
3456 iq_pi = admin_queues->iq_pi_copy;
3457
3458 next_element = admin_queues->iq_element_array +
3459 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
3460
3461 memcpy(next_element, request, sizeof(*request));
3462
3463 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
3464 admin_queues->iq_pi_copy = iq_pi;
3465
3466 /*
3467 * This write notifies the controller that an IU is available to be
3468 * processed.
3469 */
3470 writel(iq_pi, admin_queues->iq_pi);
3471 }
3472
3473 #define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
3474
3475 static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
3476 struct pqi_general_admin_response *response)
3477 {
3478 struct pqi_admin_queues *admin_queues;
3479 pqi_index_t oq_pi;
3480 pqi_index_t oq_ci;
3481 unsigned long timeout;
3482
3483 admin_queues = &ctrl_info->admin_queues;
3484 oq_ci = admin_queues->oq_ci_copy;
3485
3486 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * HZ) + jiffies;
3487
3488 while (1) {
3489 oq_pi = *admin_queues->oq_pi;
3490 if (oq_pi != oq_ci)
3491 break;
3492 if (time_after(jiffies, timeout)) {
3493 dev_err(&ctrl_info->pci_dev->dev,
3494 "timed out waiting for admin response\n");
3495 return -ETIMEDOUT;
3496 }
3497 if (!sis_is_firmware_running(ctrl_info))
3498 return -ENXIO;
3499 usleep_range(1000, 2000);
3500 }
3501
3502 memcpy(response, admin_queues->oq_element_array +
3503 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
3504
3505 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
3506 admin_queues->oq_ci_copy = oq_ci;
3507 writel(oq_ci, admin_queues->oq_ci);
3508
3509 return 0;
3510 }
3511
3512 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
3513 struct pqi_queue_group *queue_group, enum pqi_io_path path,
3514 struct pqi_io_request *io_request)
3515 {
3516 struct pqi_io_request *next;
3517 void *next_element;
3518 pqi_index_t iq_pi;
3519 pqi_index_t iq_ci;
3520 size_t iu_length;
3521 unsigned long flags;
3522 unsigned int num_elements_needed;
3523 unsigned int num_elements_to_end_of_queue;
3524 size_t copy_count;
3525 struct pqi_iu_header *request;
3526
3527 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
3528
3529 if (io_request) {
3530 io_request->queue_group = queue_group;
3531 list_add_tail(&io_request->request_list_entry,
3532 &queue_group->request_list[path]);
3533 }
3534
3535 iq_pi = queue_group->iq_pi_copy[path];
3536
3537 list_for_each_entry_safe(io_request, next,
3538 &queue_group->request_list[path], request_list_entry) {
3539
3540 request = io_request->iu;
3541
3542 iu_length = get_unaligned_le16(&request->iu_length) +
3543 PQI_REQUEST_HEADER_LENGTH;
3544 num_elements_needed =
3545 DIV_ROUND_UP(iu_length,
3546 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3547
3548 iq_ci = *queue_group->iq_ci[path];
3549
3550 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
3551 ctrl_info->num_elements_per_iq))
3552 break;
3553
3554 put_unaligned_le16(queue_group->oq_id,
3555 &request->response_queue_id);
3556
3557 next_element = queue_group->iq_element_array[path] +
3558 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3559
3560 num_elements_to_end_of_queue =
3561 ctrl_info->num_elements_per_iq - iq_pi;
3562
3563 if (num_elements_needed <= num_elements_to_end_of_queue) {
3564 memcpy(next_element, request, iu_length);
3565 } else {
3566 copy_count = num_elements_to_end_of_queue *
3567 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
3568 memcpy(next_element, request, copy_count);
3569 memcpy(queue_group->iq_element_array[path],
3570 (u8 *)request + copy_count,
3571 iu_length - copy_count);
3572 }
3573
3574 iq_pi = (iq_pi + num_elements_needed) %
3575 ctrl_info->num_elements_per_iq;
3576
3577 list_del(&io_request->request_list_entry);
3578 }
3579
3580 if (iq_pi != queue_group->iq_pi_copy[path]) {
3581 queue_group->iq_pi_copy[path] = iq_pi;
3582 /*
3583 * This write notifies the controller that one or more IUs are
3584 * available to be processed.
3585 */
3586 writel(iq_pi, queue_group->iq_pi[path]);
3587 }
3588
3589 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
3590 }
3591
3592 #define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
3593
3594 static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
3595 struct completion *wait)
3596 {
3597 int rc;
3598
3599 while (1) {
3600 if (wait_for_completion_io_timeout(wait,
3601 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) {
3602 rc = 0;
3603 break;
3604 }
3605
3606 pqi_check_ctrl_health(ctrl_info);
3607 if (pqi_ctrl_offline(ctrl_info)) {
3608 rc = -ENXIO;
3609 break;
3610 }
3611 }
3612
3613 return rc;
3614 }
3615
3616 static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
3617 void *context)
3618 {
3619 struct completion *waiting = context;
3620
3621 complete(waiting);
3622 }
3623
3624 static int pqi_submit_raid_request_synchronous_with_io_request(
3625 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
3626 unsigned long timeout_msecs)
3627 {
3628 int rc = 0;
3629 DECLARE_COMPLETION_ONSTACK(wait);
3630
3631 io_request->io_complete_callback = pqi_raid_synchronous_complete;
3632 io_request->context = &wait;
3633
3634 pqi_start_io(ctrl_info,
3635 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
3636 io_request);
3637
3638 if (timeout_msecs == NO_TIMEOUT) {
3639 pqi_wait_for_completion_io(ctrl_info, &wait);
3640 } else {
3641 if (!wait_for_completion_io_timeout(&wait,
3642 msecs_to_jiffies(timeout_msecs))) {
3643 dev_warn(&ctrl_info->pci_dev->dev,
3644 "command timed out\n");
3645 rc = -ETIMEDOUT;
3646 }
3647 }
3648
3649 return rc;
3650 }
3651
3652 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
3653 struct pqi_iu_header *request, unsigned int flags,
3654 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
3655 {
3656 int rc;
3657 struct pqi_io_request *io_request;
3658 unsigned long start_jiffies;
3659 unsigned long msecs_blocked;
3660 size_t iu_length;
3661
3662 /*
3663 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
3664 * are mutually exclusive.
3665 */
3666
3667 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
3668 if (down_interruptible(&ctrl_info->sync_request_sem))
3669 return -ERESTARTSYS;
3670 } else {
3671 if (timeout_msecs == NO_TIMEOUT) {
3672 down(&ctrl_info->sync_request_sem);
3673 } else {
3674 start_jiffies = jiffies;
3675 if (down_timeout(&ctrl_info->sync_request_sem,
3676 msecs_to_jiffies(timeout_msecs)))
3677 return -ETIMEDOUT;
3678 msecs_blocked =
3679 jiffies_to_msecs(jiffies - start_jiffies);
3680 if (msecs_blocked >= timeout_msecs)
3681 return -ETIMEDOUT;
3682 timeout_msecs -= msecs_blocked;
3683 }
3684 }
3685
3686 pqi_ctrl_busy(ctrl_info);
3687 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
3688 if (timeout_msecs == 0) {
3689 rc = -ETIMEDOUT;
3690 goto out;
3691 }
3692
3693 if (pqi_ctrl_offline(ctrl_info)) {
3694 rc = -ENXIO;
3695 goto out;
3696 }
3697
3698 io_request = pqi_alloc_io_request(ctrl_info);
3699
3700 put_unaligned_le16(io_request->index,
3701 &(((struct pqi_raid_path_request *)request)->request_id));
3702
3703 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
3704 ((struct pqi_raid_path_request *)request)->error_index =
3705 ((struct pqi_raid_path_request *)request)->request_id;
3706
3707 iu_length = get_unaligned_le16(&request->iu_length) +
3708 PQI_REQUEST_HEADER_LENGTH;
3709 memcpy(io_request->iu, request, iu_length);
3710
3711 rc = pqi_submit_raid_request_synchronous_with_io_request(ctrl_info,
3712 io_request, timeout_msecs);
3713
3714 if (error_info) {
3715 if (io_request->error_info)
3716 memcpy(error_info, io_request->error_info,
3717 sizeof(*error_info));
3718 else
3719 memset(error_info, 0, sizeof(*error_info));
3720 } else if (rc == 0 && io_request->error_info) {
3721 u8 scsi_status;
3722 struct pqi_raid_error_info *raid_error_info;
3723
3724 raid_error_info = io_request->error_info;
3725 scsi_status = raid_error_info->status;
3726
3727 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
3728 raid_error_info->data_out_result ==
3729 PQI_DATA_IN_OUT_UNDERFLOW)
3730 scsi_status = SAM_STAT_GOOD;
3731
3732 if (scsi_status != SAM_STAT_GOOD)
3733 rc = -EIO;
3734 }
3735
3736 pqi_free_io_request(io_request);
3737
3738 out:
3739 pqi_ctrl_unbusy(ctrl_info);
3740 up(&ctrl_info->sync_request_sem);
3741
3742 return rc;
3743 }
3744
3745 static int pqi_validate_admin_response(
3746 struct pqi_general_admin_response *response, u8 expected_function_code)
3747 {
3748 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
3749 return -EINVAL;
3750
3751 if (get_unaligned_le16(&response->header.iu_length) !=
3752 PQI_GENERAL_ADMIN_IU_LENGTH)
3753 return -EINVAL;
3754
3755 if (response->function_code != expected_function_code)
3756 return -EINVAL;
3757
3758 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
3759 return -EINVAL;
3760
3761 return 0;
3762 }
3763
3764 static int pqi_submit_admin_request_synchronous(
3765 struct pqi_ctrl_info *ctrl_info,
3766 struct pqi_general_admin_request *request,
3767 struct pqi_general_admin_response *response)
3768 {
3769 int rc;
3770
3771 pqi_submit_admin_request(ctrl_info, request);
3772
3773 rc = pqi_poll_for_admin_response(ctrl_info, response);
3774
3775 if (rc == 0)
3776 rc = pqi_validate_admin_response(response,
3777 request->function_code);
3778
3779 return rc;
3780 }
3781
3782 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
3783 {
3784 int rc;
3785 struct pqi_general_admin_request request;
3786 struct pqi_general_admin_response response;
3787 struct pqi_device_capability *capability;
3788 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
3789
3790 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
3791 if (!capability)
3792 return -ENOMEM;
3793
3794 memset(&request, 0, sizeof(request));
3795
3796 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3797 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3798 &request.header.iu_length);
3799 request.function_code =
3800 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
3801 put_unaligned_le32(sizeof(*capability),
3802 &request.data.report_device_capability.buffer_length);
3803
3804 rc = pqi_map_single(ctrl_info->pci_dev,
3805 &request.data.report_device_capability.sg_descriptor,
3806 capability, sizeof(*capability),
3807 PCI_DMA_FROMDEVICE);
3808 if (rc)
3809 goto out;
3810
3811 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3812 &response);
3813
3814 pqi_pci_unmap(ctrl_info->pci_dev,
3815 &request.data.report_device_capability.sg_descriptor, 1,
3816 PCI_DMA_FROMDEVICE);
3817
3818 if (rc)
3819 goto out;
3820
3821 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
3822 rc = -EIO;
3823 goto out;
3824 }
3825
3826 ctrl_info->max_inbound_queues =
3827 get_unaligned_le16(&capability->max_inbound_queues);
3828 ctrl_info->max_elements_per_iq =
3829 get_unaligned_le16(&capability->max_elements_per_iq);
3830 ctrl_info->max_iq_element_length =
3831 get_unaligned_le16(&capability->max_iq_element_length)
3832 * 16;
3833 ctrl_info->max_outbound_queues =
3834 get_unaligned_le16(&capability->max_outbound_queues);
3835 ctrl_info->max_elements_per_oq =
3836 get_unaligned_le16(&capability->max_elements_per_oq);
3837 ctrl_info->max_oq_element_length =
3838 get_unaligned_le16(&capability->max_oq_element_length)
3839 * 16;
3840
3841 sop_iu_layer_descriptor =
3842 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
3843
3844 ctrl_info->max_inbound_iu_length_per_firmware =
3845 get_unaligned_le16(
3846 &sop_iu_layer_descriptor->max_inbound_iu_length);
3847 ctrl_info->inbound_spanning_supported =
3848 sop_iu_layer_descriptor->inbound_spanning_supported;
3849 ctrl_info->outbound_spanning_supported =
3850 sop_iu_layer_descriptor->outbound_spanning_supported;
3851
3852 out:
3853 kfree(capability);
3854
3855 return rc;
3856 }
3857
3858 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
3859 {
3860 if (ctrl_info->max_iq_element_length <
3861 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
3862 dev_err(&ctrl_info->pci_dev->dev,
3863 "max. inbound queue element length of %d is less than the required length of %d\n",
3864 ctrl_info->max_iq_element_length,
3865 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3866 return -EINVAL;
3867 }
3868
3869 if (ctrl_info->max_oq_element_length <
3870 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
3871 dev_err(&ctrl_info->pci_dev->dev,
3872 "max. outbound queue element length of %d is less than the required length of %d\n",
3873 ctrl_info->max_oq_element_length,
3874 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
3875 return -EINVAL;
3876 }
3877
3878 if (ctrl_info->max_inbound_iu_length_per_firmware <
3879 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
3880 dev_err(&ctrl_info->pci_dev->dev,
3881 "max. inbound IU length of %u is less than the min. required length of %d\n",
3882 ctrl_info->max_inbound_iu_length_per_firmware,
3883 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3884 return -EINVAL;
3885 }
3886
3887 if (!ctrl_info->inbound_spanning_supported) {
3888 dev_err(&ctrl_info->pci_dev->dev,
3889 "the controller does not support inbound spanning\n");
3890 return -EINVAL;
3891 }
3892
3893 if (ctrl_info->outbound_spanning_supported) {
3894 dev_err(&ctrl_info->pci_dev->dev,
3895 "the controller supports outbound spanning but this driver does not\n");
3896 return -EINVAL;
3897 }
3898
3899 return 0;
3900 }
3901
3902 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
3903 {
3904 int rc;
3905 struct pqi_event_queue *event_queue;
3906 struct pqi_general_admin_request request;
3907 struct pqi_general_admin_response response;
3908
3909 event_queue = &ctrl_info->event_queue;
3910
3911 /*
3912 * Create OQ (Outbound Queue - device to host queue) to dedicate
3913 * to events.
3914 */
3915 memset(&request, 0, sizeof(request));
3916 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3917 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3918 &request.header.iu_length);
3919 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
3920 put_unaligned_le16(event_queue->oq_id,
3921 &request.data.create_operational_oq.queue_id);
3922 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
3923 &request.data.create_operational_oq.element_array_addr);
3924 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
3925 &request.data.create_operational_oq.pi_addr);
3926 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
3927 &request.data.create_operational_oq.num_elements);
3928 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
3929 &request.data.create_operational_oq.element_length);
3930 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
3931 put_unaligned_le16(event_queue->int_msg_num,
3932 &request.data.create_operational_oq.int_msg_num);
3933
3934 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3935 &response);
3936 if (rc)
3937 return rc;
3938
3939 event_queue->oq_ci = ctrl_info->iomem_base +
3940 PQI_DEVICE_REGISTERS_OFFSET +
3941 get_unaligned_le64(
3942 &response.data.create_operational_oq.oq_ci_offset);
3943
3944 return 0;
3945 }
3946
3947 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
3948 unsigned int group_number)
3949 {
3950 int rc;
3951 struct pqi_queue_group *queue_group;
3952 struct pqi_general_admin_request request;
3953 struct pqi_general_admin_response response;
3954
3955 queue_group = &ctrl_info->queue_groups[group_number];
3956
3957 /*
3958 * Create IQ (Inbound Queue - host to device queue) for
3959 * RAID path.
3960 */
3961 memset(&request, 0, sizeof(request));
3962 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3963 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3964 &request.header.iu_length);
3965 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
3966 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
3967 &request.data.create_operational_iq.queue_id);
3968 put_unaligned_le64(
3969 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
3970 &request.data.create_operational_iq.element_array_addr);
3971 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
3972 &request.data.create_operational_iq.ci_addr);
3973 put_unaligned_le16(ctrl_info->num_elements_per_iq,
3974 &request.data.create_operational_iq.num_elements);
3975 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
3976 &request.data.create_operational_iq.element_length);
3977 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
3978
3979 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3980 &response);
3981 if (rc) {
3982 dev_err(&ctrl_info->pci_dev->dev,
3983 "error creating inbound RAID queue\n");
3984 return rc;
3985 }
3986
3987 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
3988 PQI_DEVICE_REGISTERS_OFFSET +
3989 get_unaligned_le64(
3990 &response.data.create_operational_iq.iq_pi_offset);
3991
3992 /*
3993 * Create IQ (Inbound Queue - host to device queue) for
3994 * Advanced I/O (AIO) path.
3995 */
3996 memset(&request, 0, sizeof(request));
3997 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3998 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3999 &request.header.iu_length);
4000 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4001 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4002 &request.data.create_operational_iq.queue_id);
4003 put_unaligned_le64((u64)queue_group->
4004 iq_element_array_bus_addr[AIO_PATH],
4005 &request.data.create_operational_iq.element_array_addr);
4006 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4007 &request.data.create_operational_iq.ci_addr);
4008 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4009 &request.data.create_operational_iq.num_elements);
4010 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4011 &request.data.create_operational_iq.element_length);
4012 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4013
4014 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4015 &response);
4016 if (rc) {
4017 dev_err(&ctrl_info->pci_dev->dev,
4018 "error creating inbound AIO queue\n");
4019 return rc;
4020 }
4021
4022 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4023 PQI_DEVICE_REGISTERS_OFFSET +
4024 get_unaligned_le64(
4025 &response.data.create_operational_iq.iq_pi_offset);
4026
4027 /*
4028 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4029 * assumed to be for RAID path I/O unless we change the queue's
4030 * property.
4031 */
4032 memset(&request, 0, sizeof(request));
4033 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4034 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4035 &request.header.iu_length);
4036 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4037 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4038 &request.data.change_operational_iq_properties.queue_id);
4039 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4040 &request.data.change_operational_iq_properties.vendor_specific);
4041
4042 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4043 &response);
4044 if (rc) {
4045 dev_err(&ctrl_info->pci_dev->dev,
4046 "error changing queue property\n");
4047 return rc;
4048 }
4049
4050 /*
4051 * Create OQ (Outbound Queue - device to host queue).
4052 */
4053 memset(&request, 0, sizeof(request));
4054 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4055 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4056 &request.header.iu_length);
4057 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4058 put_unaligned_le16(queue_group->oq_id,
4059 &request.data.create_operational_oq.queue_id);
4060 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4061 &request.data.create_operational_oq.element_array_addr);
4062 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4063 &request.data.create_operational_oq.pi_addr);
4064 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4065 &request.data.create_operational_oq.num_elements);
4066 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4067 &request.data.create_operational_oq.element_length);
4068 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4069 put_unaligned_le16(queue_group->int_msg_num,
4070 &request.data.create_operational_oq.int_msg_num);
4071
4072 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4073 &response);
4074 if (rc) {
4075 dev_err(&ctrl_info->pci_dev->dev,
4076 "error creating outbound queue\n");
4077 return rc;
4078 }
4079
4080 queue_group->oq_ci = ctrl_info->iomem_base +
4081 PQI_DEVICE_REGISTERS_OFFSET +
4082 get_unaligned_le64(
4083 &response.data.create_operational_oq.oq_ci_offset);
4084
4085 return 0;
4086 }
4087
4088 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4089 {
4090 int rc;
4091 unsigned int i;
4092
4093 rc = pqi_create_event_queue(ctrl_info);
4094 if (rc) {
4095 dev_err(&ctrl_info->pci_dev->dev,
4096 "error creating event queue\n");
4097 return rc;
4098 }
4099
4100 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4101 rc = pqi_create_queue_group(ctrl_info, i);
4102 if (rc) {
4103 dev_err(&ctrl_info->pci_dev->dev,
4104 "error creating queue group number %u/%u\n",
4105 i, ctrl_info->num_queue_groups);
4106 return rc;
4107 }
4108 }
4109
4110 return 0;
4111 }
4112
4113 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4114 (offsetof(struct pqi_event_config, descriptors) + \
4115 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4116
4117 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4118 bool enable_events)
4119 {
4120 int rc;
4121 unsigned int i;
4122 struct pqi_event_config *event_config;
4123 struct pqi_event_descriptor *event_descriptor;
4124 struct pqi_general_management_request request;
4125
4126 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4127 GFP_KERNEL);
4128 if (!event_config)
4129 return -ENOMEM;
4130
4131 memset(&request, 0, sizeof(request));
4132
4133 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4134 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4135 data.report_event_configuration.sg_descriptors[1]) -
4136 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4137 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4138 &request.data.report_event_configuration.buffer_length);
4139
4140 rc = pqi_map_single(ctrl_info->pci_dev,
4141 request.data.report_event_configuration.sg_descriptors,
4142 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4143 PCI_DMA_FROMDEVICE);
4144 if (rc)
4145 goto out;
4146
4147 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4148 0, NULL, NO_TIMEOUT);
4149
4150 pqi_pci_unmap(ctrl_info->pci_dev,
4151 request.data.report_event_configuration.sg_descriptors, 1,
4152 PCI_DMA_FROMDEVICE);
4153
4154 if (rc)
4155 goto out;
4156
4157 for (i = 0; i < event_config->num_event_descriptors; i++) {
4158 event_descriptor = &event_config->descriptors[i];
4159 if (enable_events &&
4160 pqi_is_supported_event(event_descriptor->event_type))
4161 put_unaligned_le16(ctrl_info->event_queue.oq_id,
4162 &event_descriptor->oq_id);
4163 else
4164 put_unaligned_le16(0, &event_descriptor->oq_id);
4165 }
4166
4167 memset(&request, 0, sizeof(request));
4168
4169 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4170 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4171 data.report_event_configuration.sg_descriptors[1]) -
4172 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4173 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4174 &request.data.report_event_configuration.buffer_length);
4175
4176 rc = pqi_map_single(ctrl_info->pci_dev,
4177 request.data.report_event_configuration.sg_descriptors,
4178 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4179 PCI_DMA_TODEVICE);
4180 if (rc)
4181 goto out;
4182
4183 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4184 NULL, NO_TIMEOUT);
4185
4186 pqi_pci_unmap(ctrl_info->pci_dev,
4187 request.data.report_event_configuration.sg_descriptors, 1,
4188 PCI_DMA_TODEVICE);
4189
4190 out:
4191 kfree(event_config);
4192
4193 return rc;
4194 }
4195
4196 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4197 {
4198 return pqi_configure_events(ctrl_info, true);
4199 }
4200
4201 static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4202 {
4203 return pqi_configure_events(ctrl_info, false);
4204 }
4205
4206 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4207 {
4208 unsigned int i;
4209 struct device *dev;
4210 size_t sg_chain_buffer_length;
4211 struct pqi_io_request *io_request;
4212
4213 if (!ctrl_info->io_request_pool)
4214 return;
4215
4216 dev = &ctrl_info->pci_dev->dev;
4217 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4218 io_request = ctrl_info->io_request_pool;
4219
4220 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4221 kfree(io_request->iu);
4222 if (!io_request->sg_chain_buffer)
4223 break;
4224 dma_free_coherent(dev, sg_chain_buffer_length,
4225 io_request->sg_chain_buffer,
4226 io_request->sg_chain_buffer_dma_handle);
4227 io_request++;
4228 }
4229
4230 kfree(ctrl_info->io_request_pool);
4231 ctrl_info->io_request_pool = NULL;
4232 }
4233
4234 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4235 {
4236 ctrl_info->error_buffer = dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
4237 ctrl_info->error_buffer_length,
4238 &ctrl_info->error_buffer_dma_handle, GFP_KERNEL);
4239
4240 if (!ctrl_info->error_buffer)
4241 return -ENOMEM;
4242
4243 return 0;
4244 }
4245
4246 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4247 {
4248 unsigned int i;
4249 void *sg_chain_buffer;
4250 size_t sg_chain_buffer_length;
4251 dma_addr_t sg_chain_buffer_dma_handle;
4252 struct device *dev;
4253 struct pqi_io_request *io_request;
4254
4255 ctrl_info->io_request_pool =
4256 kcalloc(ctrl_info->max_io_slots,
4257 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
4258
4259 if (!ctrl_info->io_request_pool) {
4260 dev_err(&ctrl_info->pci_dev->dev,
4261 "failed to allocate I/O request pool\n");
4262 goto error;
4263 }
4264
4265 dev = &ctrl_info->pci_dev->dev;
4266 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4267 io_request = ctrl_info->io_request_pool;
4268
4269 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4270 io_request->iu =
4271 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
4272
4273 if (!io_request->iu) {
4274 dev_err(&ctrl_info->pci_dev->dev,
4275 "failed to allocate IU buffers\n");
4276 goto error;
4277 }
4278
4279 sg_chain_buffer = dma_alloc_coherent(dev,
4280 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4281 GFP_KERNEL);
4282
4283 if (!sg_chain_buffer) {
4284 dev_err(&ctrl_info->pci_dev->dev,
4285 "failed to allocate PQI scatter-gather chain buffers\n");
4286 goto error;
4287 }
4288
4289 io_request->index = i;
4290 io_request->sg_chain_buffer = sg_chain_buffer;
4291 io_request->sg_chain_buffer_dma_handle =
4292 sg_chain_buffer_dma_handle;
4293 io_request++;
4294 }
4295
4296 return 0;
4297
4298 error:
4299 pqi_free_all_io_requests(ctrl_info);
4300
4301 return -ENOMEM;
4302 }
4303
4304 /*
4305 * Calculate required resources that are sized based on max. outstanding
4306 * requests and max. transfer size.
4307 */
4308
4309 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4310 {
4311 u32 max_transfer_size;
4312 u32 max_sg_entries;
4313
4314 ctrl_info->scsi_ml_can_queue =
4315 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4316 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4317
4318 ctrl_info->error_buffer_length =
4319 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4320
4321 if (reset_devices)
4322 max_transfer_size = min(ctrl_info->max_transfer_size,
4323 PQI_MAX_TRANSFER_SIZE_KDUMP);
4324 else
4325 max_transfer_size = min(ctrl_info->max_transfer_size,
4326 PQI_MAX_TRANSFER_SIZE);
4327
4328 max_sg_entries = max_transfer_size / PAGE_SIZE;
4329
4330 /* +1 to cover when the buffer is not page-aligned. */
4331 max_sg_entries++;
4332
4333 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4334
4335 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4336
4337 ctrl_info->sg_chain_buffer_length =
4338 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4339 PQI_EXTRA_SGL_MEMORY;
4340 ctrl_info->sg_tablesize = max_sg_entries;
4341 ctrl_info->max_sectors = max_transfer_size / 512;
4342 }
4343
4344 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4345 {
4346 int num_queue_groups;
4347 u16 num_elements_per_iq;
4348 u16 num_elements_per_oq;
4349
4350 if (reset_devices) {
4351 num_queue_groups = 1;
4352 } else {
4353 int num_cpus;
4354 int max_queue_groups;
4355
4356 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4357 ctrl_info->max_outbound_queues - 1);
4358 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
4359
4360 num_cpus = num_online_cpus();
4361 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4362 num_queue_groups = min(num_queue_groups, max_queue_groups);
4363 }
4364
4365 ctrl_info->num_queue_groups = num_queue_groups;
4366 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
4367
4368 /*
4369 * Make sure that the max. inbound IU length is an even multiple
4370 * of our inbound element length.
4371 */
4372 ctrl_info->max_inbound_iu_length =
4373 (ctrl_info->max_inbound_iu_length_per_firmware /
4374 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4375 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
4376
4377 num_elements_per_iq =
4378 (ctrl_info->max_inbound_iu_length /
4379 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4380
4381 /* Add one because one element in each queue is unusable. */
4382 num_elements_per_iq++;
4383
4384 num_elements_per_iq = min(num_elements_per_iq,
4385 ctrl_info->max_elements_per_iq);
4386
4387 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4388 num_elements_per_oq = min(num_elements_per_oq,
4389 ctrl_info->max_elements_per_oq);
4390
4391 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4392 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4393
4394 ctrl_info->max_sg_per_iu =
4395 ((ctrl_info->max_inbound_iu_length -
4396 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4397 sizeof(struct pqi_sg_descriptor)) +
4398 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
4399 }
4400
4401 static inline void pqi_set_sg_descriptor(
4402 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg)
4403 {
4404 u64 address = (u64)sg_dma_address(sg);
4405 unsigned int length = sg_dma_len(sg);
4406
4407 put_unaligned_le64(address, &sg_descriptor->address);
4408 put_unaligned_le32(length, &sg_descriptor->length);
4409 put_unaligned_le32(0, &sg_descriptor->flags);
4410 }
4411
4412 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
4413 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
4414 struct pqi_io_request *io_request)
4415 {
4416 int i;
4417 u16 iu_length;
4418 int sg_count;
4419 bool chained;
4420 unsigned int num_sg_in_iu;
4421 unsigned int max_sg_per_iu;
4422 struct scatterlist *sg;
4423 struct pqi_sg_descriptor *sg_descriptor;
4424
4425 sg_count = scsi_dma_map(scmd);
4426 if (sg_count < 0)
4427 return sg_count;
4428
4429 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
4430 PQI_REQUEST_HEADER_LENGTH;
4431
4432 if (sg_count == 0)
4433 goto out;
4434
4435 sg = scsi_sglist(scmd);
4436 sg_descriptor = request->sg_descriptors;
4437 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4438 chained = false;
4439 num_sg_in_iu = 0;
4440 i = 0;
4441
4442 while (1) {
4443 pqi_set_sg_descriptor(sg_descriptor, sg);
4444 if (!chained)
4445 num_sg_in_iu++;
4446 i++;
4447 if (i == sg_count)
4448 break;
4449 sg_descriptor++;
4450 if (i == max_sg_per_iu) {
4451 put_unaligned_le64(
4452 (u64)io_request->sg_chain_buffer_dma_handle,
4453 &sg_descriptor->address);
4454 put_unaligned_le32((sg_count - num_sg_in_iu)
4455 * sizeof(*sg_descriptor),
4456 &sg_descriptor->length);
4457 put_unaligned_le32(CISS_SG_CHAIN,
4458 &sg_descriptor->flags);
4459 chained = true;
4460 num_sg_in_iu++;
4461 sg_descriptor = io_request->sg_chain_buffer;
4462 }
4463 sg = sg_next(sg);
4464 }
4465
4466 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4467 request->partial = chained;
4468 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4469
4470 out:
4471 put_unaligned_le16(iu_length, &request->header.iu_length);
4472
4473 return 0;
4474 }
4475
4476 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
4477 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
4478 struct pqi_io_request *io_request)
4479 {
4480 int i;
4481 u16 iu_length;
4482 int sg_count;
4483 bool chained;
4484 unsigned int num_sg_in_iu;
4485 unsigned int max_sg_per_iu;
4486 struct scatterlist *sg;
4487 struct pqi_sg_descriptor *sg_descriptor;
4488
4489 sg_count = scsi_dma_map(scmd);
4490 if (sg_count < 0)
4491 return sg_count;
4492
4493 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
4494 PQI_REQUEST_HEADER_LENGTH;
4495 num_sg_in_iu = 0;
4496
4497 if (sg_count == 0)
4498 goto out;
4499
4500 sg = scsi_sglist(scmd);
4501 sg_descriptor = request->sg_descriptors;
4502 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4503 chained = false;
4504 i = 0;
4505
4506 while (1) {
4507 pqi_set_sg_descriptor(sg_descriptor, sg);
4508 if (!chained)
4509 num_sg_in_iu++;
4510 i++;
4511 if (i == sg_count)
4512 break;
4513 sg_descriptor++;
4514 if (i == max_sg_per_iu) {
4515 put_unaligned_le64(
4516 (u64)io_request->sg_chain_buffer_dma_handle,
4517 &sg_descriptor->address);
4518 put_unaligned_le32((sg_count - num_sg_in_iu)
4519 * sizeof(*sg_descriptor),
4520 &sg_descriptor->length);
4521 put_unaligned_le32(CISS_SG_CHAIN,
4522 &sg_descriptor->flags);
4523 chained = true;
4524 num_sg_in_iu++;
4525 sg_descriptor = io_request->sg_chain_buffer;
4526 }
4527 sg = sg_next(sg);
4528 }
4529
4530 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4531 request->partial = chained;
4532 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4533
4534 out:
4535 put_unaligned_le16(iu_length, &request->header.iu_length);
4536 request->num_sg_descriptors = num_sg_in_iu;
4537
4538 return 0;
4539 }
4540
4541 static void pqi_raid_io_complete(struct pqi_io_request *io_request,
4542 void *context)
4543 {
4544 struct scsi_cmnd *scmd;
4545
4546 scmd = io_request->scmd;
4547 pqi_free_io_request(io_request);
4548 scsi_dma_unmap(scmd);
4549 pqi_scsi_done(scmd);
4550 }
4551
4552 static int pqi_raid_submit_scsi_cmd_with_io_request(
4553 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
4554 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4555 struct pqi_queue_group *queue_group)
4556 {
4557 int rc;
4558 size_t cdb_length;
4559 struct pqi_raid_path_request *request;
4560
4561 io_request->io_complete_callback = pqi_raid_io_complete;
4562 io_request->scmd = scmd;
4563
4564 request = io_request->iu;
4565 memset(request, 0,
4566 offsetof(struct pqi_raid_path_request, sg_descriptors));
4567
4568 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
4569 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4570 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4571 put_unaligned_le16(io_request->index, &request->request_id);
4572 request->error_index = request->request_id;
4573 memcpy(request->lun_number, device->scsi3addr,
4574 sizeof(request->lun_number));
4575
4576 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
4577 memcpy(request->cdb, scmd->cmnd, cdb_length);
4578
4579 switch (cdb_length) {
4580 case 6:
4581 case 10:
4582 case 12:
4583 case 16:
4584 /* No bytes in the Additional CDB bytes field */
4585 request->additional_cdb_bytes_usage =
4586 SOP_ADDITIONAL_CDB_BYTES_0;
4587 break;
4588 case 20:
4589 /* 4 bytes in the Additional cdb field */
4590 request->additional_cdb_bytes_usage =
4591 SOP_ADDITIONAL_CDB_BYTES_4;
4592 break;
4593 case 24:
4594 /* 8 bytes in the Additional cdb field */
4595 request->additional_cdb_bytes_usage =
4596 SOP_ADDITIONAL_CDB_BYTES_8;
4597 break;
4598 case 28:
4599 /* 12 bytes in the Additional cdb field */
4600 request->additional_cdb_bytes_usage =
4601 SOP_ADDITIONAL_CDB_BYTES_12;
4602 break;
4603 case 32:
4604 default:
4605 /* 16 bytes in the Additional cdb field */
4606 request->additional_cdb_bytes_usage =
4607 SOP_ADDITIONAL_CDB_BYTES_16;
4608 break;
4609 }
4610
4611 switch (scmd->sc_data_direction) {
4612 case DMA_TO_DEVICE:
4613 request->data_direction = SOP_READ_FLAG;
4614 break;
4615 case DMA_FROM_DEVICE:
4616 request->data_direction = SOP_WRITE_FLAG;
4617 break;
4618 case DMA_NONE:
4619 request->data_direction = SOP_NO_DIRECTION_FLAG;
4620 break;
4621 case DMA_BIDIRECTIONAL:
4622 request->data_direction = SOP_BIDIRECTIONAL;
4623 break;
4624 default:
4625 dev_err(&ctrl_info->pci_dev->dev,
4626 "unknown data direction: %d\n",
4627 scmd->sc_data_direction);
4628 break;
4629 }
4630
4631 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
4632 if (rc) {
4633 pqi_free_io_request(io_request);
4634 return SCSI_MLQUEUE_HOST_BUSY;
4635 }
4636
4637 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
4638
4639 return 0;
4640 }
4641
4642 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
4643 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4644 struct pqi_queue_group *queue_group)
4645 {
4646 struct pqi_io_request *io_request;
4647
4648 io_request = pqi_alloc_io_request(ctrl_info);
4649
4650 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
4651 device, scmd, queue_group);
4652 }
4653
4654 static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
4655 {
4656 if (!pqi_ctrl_blocked(ctrl_info))
4657 schedule_work(&ctrl_info->raid_bypass_retry_work);
4658 }
4659
4660 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
4661 {
4662 struct scsi_cmnd *scmd;
4663 struct pqi_scsi_dev *device;
4664 struct pqi_ctrl_info *ctrl_info;
4665
4666 if (!io_request->raid_bypass)
4667 return false;
4668
4669 scmd = io_request->scmd;
4670 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
4671 return false;
4672 if (host_byte(scmd->result) == DID_NO_CONNECT)
4673 return false;
4674
4675 device = scmd->device->hostdata;
4676 if (pqi_device_offline(device))
4677 return false;
4678
4679 ctrl_info = shost_to_hba(scmd->device->host);
4680 if (pqi_ctrl_offline(ctrl_info))
4681 return false;
4682
4683 return true;
4684 }
4685
4686 static inline void pqi_add_to_raid_bypass_retry_list(
4687 struct pqi_ctrl_info *ctrl_info,
4688 struct pqi_io_request *io_request, bool at_head)
4689 {
4690 unsigned long flags;
4691
4692 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4693 if (at_head)
4694 list_add(&io_request->request_list_entry,
4695 &ctrl_info->raid_bypass_retry_list);
4696 else
4697 list_add_tail(&io_request->request_list_entry,
4698 &ctrl_info->raid_bypass_retry_list);
4699 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4700 }
4701
4702 static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
4703 void *context)
4704 {
4705 struct scsi_cmnd *scmd;
4706
4707 scmd = io_request->scmd;
4708 pqi_free_io_request(io_request);
4709 pqi_scsi_done(scmd);
4710 }
4711
4712 static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
4713 {
4714 struct scsi_cmnd *scmd;
4715 struct pqi_ctrl_info *ctrl_info;
4716
4717 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
4718 scmd = io_request->scmd;
4719 scmd->result = 0;
4720 ctrl_info = shost_to_hba(scmd->device->host);
4721
4722 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
4723 pqi_schedule_bypass_retry(ctrl_info);
4724 }
4725
4726 static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
4727 {
4728 struct scsi_cmnd *scmd;
4729 struct pqi_scsi_dev *device;
4730 struct pqi_ctrl_info *ctrl_info;
4731 struct pqi_queue_group *queue_group;
4732
4733 scmd = io_request->scmd;
4734 device = scmd->device->hostdata;
4735 if (pqi_device_in_reset(device)) {
4736 pqi_free_io_request(io_request);
4737 set_host_byte(scmd, DID_RESET);
4738 pqi_scsi_done(scmd);
4739 return 0;
4740 }
4741
4742 ctrl_info = shost_to_hba(scmd->device->host);
4743 queue_group = io_request->queue_group;
4744
4745 pqi_reinit_io_request(io_request);
4746
4747 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
4748 device, scmd, queue_group);
4749 }
4750
4751 static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
4752 struct pqi_ctrl_info *ctrl_info)
4753 {
4754 unsigned long flags;
4755 struct pqi_io_request *io_request;
4756
4757 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4758 io_request = list_first_entry_or_null(
4759 &ctrl_info->raid_bypass_retry_list,
4760 struct pqi_io_request, request_list_entry);
4761 if (io_request)
4762 list_del(&io_request->request_list_entry);
4763 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4764
4765 return io_request;
4766 }
4767
4768 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
4769 {
4770 int rc;
4771 struct pqi_io_request *io_request;
4772
4773 pqi_ctrl_busy(ctrl_info);
4774
4775 while (1) {
4776 if (pqi_ctrl_blocked(ctrl_info))
4777 break;
4778 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
4779 if (!io_request)
4780 break;
4781 rc = pqi_retry_raid_bypass(io_request);
4782 if (rc) {
4783 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
4784 true);
4785 pqi_schedule_bypass_retry(ctrl_info);
4786 break;
4787 }
4788 }
4789
4790 pqi_ctrl_unbusy(ctrl_info);
4791 }
4792
4793 static void pqi_raid_bypass_retry_worker(struct work_struct *work)
4794 {
4795 struct pqi_ctrl_info *ctrl_info;
4796
4797 ctrl_info = container_of(work, struct pqi_ctrl_info,
4798 raid_bypass_retry_work);
4799 pqi_retry_raid_bypass_requests(ctrl_info);
4800 }
4801
4802 static void pqi_clear_all_queued_raid_bypass_retries(
4803 struct pqi_ctrl_info *ctrl_info)
4804 {
4805 unsigned long flags;
4806
4807 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4808 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
4809 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4810 }
4811
4812 static void pqi_aio_io_complete(struct pqi_io_request *io_request,
4813 void *context)
4814 {
4815 struct scsi_cmnd *scmd;
4816
4817 scmd = io_request->scmd;
4818 scsi_dma_unmap(scmd);
4819 if (io_request->status == -EAGAIN)
4820 set_host_byte(scmd, DID_IMM_RETRY);
4821 else if (pqi_raid_bypass_retry_needed(io_request)) {
4822 pqi_queue_raid_bypass_retry(io_request);
4823 return;
4824 }
4825 pqi_free_io_request(io_request);
4826 pqi_scsi_done(scmd);
4827 }
4828
4829 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
4830 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4831 struct pqi_queue_group *queue_group)
4832 {
4833 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
4834 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
4835 }
4836
4837 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
4838 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
4839 unsigned int cdb_length, struct pqi_queue_group *queue_group,
4840 struct pqi_encryption_info *encryption_info, bool raid_bypass)
4841 {
4842 int rc;
4843 struct pqi_io_request *io_request;
4844 struct pqi_aio_path_request *request;
4845
4846 io_request = pqi_alloc_io_request(ctrl_info);
4847 io_request->io_complete_callback = pqi_aio_io_complete;
4848 io_request->scmd = scmd;
4849 io_request->raid_bypass = raid_bypass;
4850
4851 request = io_request->iu;
4852 memset(request, 0,
4853 offsetof(struct pqi_raid_path_request, sg_descriptors));
4854
4855 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
4856 put_unaligned_le32(aio_handle, &request->nexus_id);
4857 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4858 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4859 put_unaligned_le16(io_request->index, &request->request_id);
4860 request->error_index = request->request_id;
4861 if (cdb_length > sizeof(request->cdb))
4862 cdb_length = sizeof(request->cdb);
4863 request->cdb_length = cdb_length;
4864 memcpy(request->cdb, cdb, cdb_length);
4865
4866 switch (scmd->sc_data_direction) {
4867 case DMA_TO_DEVICE:
4868 request->data_direction = SOP_READ_FLAG;
4869 break;
4870 case DMA_FROM_DEVICE:
4871 request->data_direction = SOP_WRITE_FLAG;
4872 break;
4873 case DMA_NONE:
4874 request->data_direction = SOP_NO_DIRECTION_FLAG;
4875 break;
4876 case DMA_BIDIRECTIONAL:
4877 request->data_direction = SOP_BIDIRECTIONAL;
4878 break;
4879 default:
4880 dev_err(&ctrl_info->pci_dev->dev,
4881 "unknown data direction: %d\n",
4882 scmd->sc_data_direction);
4883 break;
4884 }
4885
4886 if (encryption_info) {
4887 request->encryption_enable = true;
4888 put_unaligned_le16(encryption_info->data_encryption_key_index,
4889 &request->data_encryption_key_index);
4890 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
4891 &request->encrypt_tweak_lower);
4892 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
4893 &request->encrypt_tweak_upper);
4894 }
4895
4896 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
4897 if (rc) {
4898 pqi_free_io_request(io_request);
4899 return SCSI_MLQUEUE_HOST_BUSY;
4900 }
4901
4902 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
4903
4904 return 0;
4905 }
4906
4907 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
4908 struct scsi_cmnd *scmd)
4909 {
4910 u16 hw_queue;
4911
4912 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
4913 if (hw_queue > ctrl_info->max_hw_queue_index)
4914 hw_queue = 0;
4915
4916 return hw_queue;
4917 }
4918
4919 /*
4920 * This function gets called just before we hand the completed SCSI request
4921 * back to the SML.
4922 */
4923
4924 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
4925 {
4926 struct pqi_scsi_dev *device;
4927
4928 device = scmd->device->hostdata;
4929 atomic_dec(&device->scsi_cmds_outstanding);
4930 }
4931
4932 static int pqi_scsi_queue_command(struct Scsi_Host *shost,
4933 struct scsi_cmnd *scmd)
4934 {
4935 int rc;
4936 struct pqi_ctrl_info *ctrl_info;
4937 struct pqi_scsi_dev *device;
4938 u16 hw_queue;
4939 struct pqi_queue_group *queue_group;
4940 bool raid_bypassed;
4941
4942 device = scmd->device->hostdata;
4943 ctrl_info = shost_to_hba(shost);
4944
4945 atomic_inc(&device->scsi_cmds_outstanding);
4946
4947 if (pqi_ctrl_offline(ctrl_info)) {
4948 set_host_byte(scmd, DID_NO_CONNECT);
4949 pqi_scsi_done(scmd);
4950 return 0;
4951 }
4952
4953 pqi_ctrl_busy(ctrl_info);
4954 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device)) {
4955 rc = SCSI_MLQUEUE_HOST_BUSY;
4956 goto out;
4957 }
4958
4959 /*
4960 * This is necessary because the SML doesn't zero out this field during
4961 * error recovery.
4962 */
4963 scmd->result = 0;
4964
4965 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
4966 queue_group = &ctrl_info->queue_groups[hw_queue];
4967
4968 if (pqi_is_logical_device(device)) {
4969 raid_bypassed = false;
4970 if (device->raid_bypass_enabled &&
4971 !blk_rq_is_passthrough(scmd->request)) {
4972 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
4973 scmd, queue_group);
4974 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
4975 raid_bypassed = true;
4976 }
4977 if (!raid_bypassed)
4978 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
4979 queue_group);
4980 } else {
4981 if (device->aio_enabled)
4982 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd,
4983 queue_group);
4984 else
4985 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
4986 queue_group);
4987 }
4988
4989 out:
4990 pqi_ctrl_unbusy(ctrl_info);
4991 if (rc)
4992 atomic_dec(&device->scsi_cmds_outstanding);
4993
4994 return rc;
4995 }
4996
4997 static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
4998 struct pqi_queue_group *queue_group)
4999 {
5000 unsigned int path;
5001 unsigned long flags;
5002 bool list_is_empty;
5003
5004 for (path = 0; path < 2; path++) {
5005 while (1) {
5006 spin_lock_irqsave(
5007 &queue_group->submit_lock[path], flags);
5008 list_is_empty =
5009 list_empty(&queue_group->request_list[path]);
5010 spin_unlock_irqrestore(
5011 &queue_group->submit_lock[path], flags);
5012 if (list_is_empty)
5013 break;
5014 pqi_check_ctrl_health(ctrl_info);
5015 if (pqi_ctrl_offline(ctrl_info))
5016 return -ENXIO;
5017 usleep_range(1000, 2000);
5018 }
5019 }
5020
5021 return 0;
5022 }
5023
5024 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
5025 {
5026 int rc;
5027 unsigned int i;
5028 unsigned int path;
5029 struct pqi_queue_group *queue_group;
5030 pqi_index_t iq_pi;
5031 pqi_index_t iq_ci;
5032
5033 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5034 queue_group = &ctrl_info->queue_groups[i];
5035
5036 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
5037 if (rc)
5038 return rc;
5039
5040 for (path = 0; path < 2; path++) {
5041 iq_pi = queue_group->iq_pi_copy[path];
5042
5043 while (1) {
5044 iq_ci = *queue_group->iq_ci[path];
5045 if (iq_ci == iq_pi)
5046 break;
5047 pqi_check_ctrl_health(ctrl_info);
5048 if (pqi_ctrl_offline(ctrl_info))
5049 return -ENXIO;
5050 usleep_range(1000, 2000);
5051 }
5052 }
5053 }
5054
5055 return 0;
5056 }
5057
5058 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5059 struct pqi_scsi_dev *device)
5060 {
5061 unsigned int i;
5062 unsigned int path;
5063 struct pqi_queue_group *queue_group;
5064 unsigned long flags;
5065 struct pqi_io_request *io_request;
5066 struct pqi_io_request *next;
5067 struct scsi_cmnd *scmd;
5068 struct pqi_scsi_dev *scsi_device;
5069
5070 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5071 queue_group = &ctrl_info->queue_groups[i];
5072
5073 for (path = 0; path < 2; path++) {
5074 spin_lock_irqsave(
5075 &queue_group->submit_lock[path], flags);
5076
5077 list_for_each_entry_safe(io_request, next,
5078 &queue_group->request_list[path],
5079 request_list_entry) {
5080 scmd = io_request->scmd;
5081 if (!scmd)
5082 continue;
5083
5084 scsi_device = scmd->device->hostdata;
5085 if (scsi_device != device)
5086 continue;
5087
5088 list_del(&io_request->request_list_entry);
5089 set_host_byte(scmd, DID_RESET);
5090 pqi_scsi_done(scmd);
5091 }
5092
5093 spin_unlock_irqrestore(
5094 &queue_group->submit_lock[path], flags);
5095 }
5096 }
5097 }
5098
5099 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5100 struct pqi_scsi_dev *device)
5101 {
5102 while (atomic_read(&device->scsi_cmds_outstanding)) {
5103 pqi_check_ctrl_health(ctrl_info);
5104 if (pqi_ctrl_offline(ctrl_info))
5105 return -ENXIO;
5106 usleep_range(1000, 2000);
5107 }
5108
5109 return 0;
5110 }
5111
5112 static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info)
5113 {
5114 bool io_pending;
5115 unsigned long flags;
5116 struct pqi_scsi_dev *device;
5117
5118 while (1) {
5119 io_pending = false;
5120
5121 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5122 list_for_each_entry(device, &ctrl_info->scsi_device_list,
5123 scsi_device_list_entry) {
5124 if (atomic_read(&device->scsi_cmds_outstanding)) {
5125 io_pending = true;
5126 break;
5127 }
5128 }
5129 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5130 flags);
5131
5132 if (!io_pending)
5133 break;
5134
5135 pqi_check_ctrl_health(ctrl_info);
5136 if (pqi_ctrl_offline(ctrl_info))
5137 return -ENXIO;
5138
5139 usleep_range(1000, 2000);
5140 }
5141
5142 return 0;
5143 }
5144
5145 static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
5146 void *context)
5147 {
5148 struct completion *waiting = context;
5149
5150 complete(waiting);
5151 }
5152
5153 #define PQI_LUN_RESET_TIMEOUT_SECS 10
5154
5155 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
5156 struct pqi_scsi_dev *device, struct completion *wait)
5157 {
5158 int rc;
5159
5160 while (1) {
5161 if (wait_for_completion_io_timeout(wait,
5162 PQI_LUN_RESET_TIMEOUT_SECS * HZ)) {
5163 rc = 0;
5164 break;
5165 }
5166
5167 pqi_check_ctrl_health(ctrl_info);
5168 if (pqi_ctrl_offline(ctrl_info)) {
5169 rc = -ENXIO;
5170 break;
5171 }
5172 }
5173
5174 return rc;
5175 }
5176
5177 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
5178 struct pqi_scsi_dev *device)
5179 {
5180 int rc;
5181 struct pqi_io_request *io_request;
5182 DECLARE_COMPLETION_ONSTACK(wait);
5183 struct pqi_task_management_request *request;
5184
5185 io_request = pqi_alloc_io_request(ctrl_info);
5186 io_request->io_complete_callback = pqi_lun_reset_complete;
5187 io_request->context = &wait;
5188
5189 request = io_request->iu;
5190 memset(request, 0, sizeof(*request));
5191
5192 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
5193 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
5194 &request->header.iu_length);
5195 put_unaligned_le16(io_request->index, &request->request_id);
5196 memcpy(request->lun_number, device->scsi3addr,
5197 sizeof(request->lun_number));
5198 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
5199
5200 pqi_start_io(ctrl_info,
5201 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
5202 io_request);
5203
5204 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
5205 if (rc == 0)
5206 rc = io_request->status;
5207
5208 pqi_free_io_request(io_request);
5209
5210 return rc;
5211 }
5212
5213 /* Performs a reset at the LUN level. */
5214
5215 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5216 struct pqi_scsi_dev *device)
5217 {
5218 int rc;
5219
5220 rc = pqi_lun_reset(ctrl_info, device);
5221 if (rc == 0)
5222 rc = pqi_device_wait_for_pending_io(ctrl_info, device);
5223
5224 return rc == 0 ? SUCCESS : FAILED;
5225 }
5226
5227 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
5228 {
5229 int rc;
5230 struct Scsi_Host *shost;
5231 struct pqi_ctrl_info *ctrl_info;
5232 struct pqi_scsi_dev *device;
5233
5234 shost = scmd->device->host;
5235 ctrl_info = shost_to_hba(shost);
5236 device = scmd->device->hostdata;
5237
5238 dev_err(&ctrl_info->pci_dev->dev,
5239 "resetting scsi %d:%d:%d:%d\n",
5240 shost->host_no, device->bus, device->target, device->lun);
5241
5242 pqi_check_ctrl_health(ctrl_info);
5243 if (pqi_ctrl_offline(ctrl_info)) {
5244 rc = FAILED;
5245 goto out;
5246 }
5247
5248 mutex_lock(&ctrl_info->lun_reset_mutex);
5249
5250 pqi_ctrl_block_requests(ctrl_info);
5251 pqi_ctrl_wait_until_quiesced(ctrl_info);
5252 pqi_fail_io_queued_for_device(ctrl_info, device);
5253 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
5254 pqi_device_reset_start(device);
5255 pqi_ctrl_unblock_requests(ctrl_info);
5256
5257 if (rc)
5258 rc = FAILED;
5259 else
5260 rc = pqi_device_reset(ctrl_info, device);
5261
5262 pqi_device_reset_done(device);
5263
5264 mutex_unlock(&ctrl_info->lun_reset_mutex);
5265
5266 out:
5267 dev_err(&ctrl_info->pci_dev->dev,
5268 "reset of scsi %d:%d:%d:%d: %s\n",
5269 shost->host_no, device->bus, device->target, device->lun,
5270 rc == SUCCESS ? "SUCCESS" : "FAILED");
5271
5272 return rc;
5273 }
5274
5275 static int pqi_slave_alloc(struct scsi_device *sdev)
5276 {
5277 struct pqi_scsi_dev *device;
5278 unsigned long flags;
5279 struct pqi_ctrl_info *ctrl_info;
5280 struct scsi_target *starget;
5281 struct sas_rphy *rphy;
5282
5283 ctrl_info = shost_to_hba(sdev->host);
5284
5285 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5286
5287 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
5288 starget = scsi_target(sdev);
5289 rphy = target_to_rphy(starget);
5290 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
5291 if (device) {
5292 device->target = sdev_id(sdev);
5293 device->lun = sdev->lun;
5294 device->target_lun_valid = true;
5295 }
5296 } else {
5297 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
5298 sdev_id(sdev), sdev->lun);
5299 }
5300
5301 if (device) {
5302 sdev->hostdata = device;
5303 device->sdev = sdev;
5304 if (device->queue_depth) {
5305 device->advertised_queue_depth = device->queue_depth;
5306 scsi_change_queue_depth(sdev,
5307 device->advertised_queue_depth);
5308 }
5309 }
5310
5311 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5312
5313 return 0;
5314 }
5315
5316 static int pqi_map_queues(struct Scsi_Host *shost)
5317 {
5318 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
5319
5320 return blk_mq_pci_map_queues(&shost->tag_set, ctrl_info->pci_dev, 0);
5321 }
5322
5323 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
5324 void __user *arg)
5325 {
5326 struct pci_dev *pci_dev;
5327 u32 subsystem_vendor;
5328 u32 subsystem_device;
5329 cciss_pci_info_struct pciinfo;
5330
5331 if (!arg)
5332 return -EINVAL;
5333
5334 pci_dev = ctrl_info->pci_dev;
5335
5336 pciinfo.domain = pci_domain_nr(pci_dev->bus);
5337 pciinfo.bus = pci_dev->bus->number;
5338 pciinfo.dev_fn = pci_dev->devfn;
5339 subsystem_vendor = pci_dev->subsystem_vendor;
5340 subsystem_device = pci_dev->subsystem_device;
5341 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) |
5342 subsystem_vendor;
5343
5344 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
5345 return -EFAULT;
5346
5347 return 0;
5348 }
5349
5350 static int pqi_getdrivver_ioctl(void __user *arg)
5351 {
5352 u32 version;
5353
5354 if (!arg)
5355 return -EINVAL;
5356
5357 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
5358 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
5359
5360 if (copy_to_user(arg, &version, sizeof(version)))
5361 return -EFAULT;
5362
5363 return 0;
5364 }
5365
5366 struct ciss_error_info {
5367 u8 scsi_status;
5368 int command_status;
5369 size_t sense_data_length;
5370 };
5371
5372 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
5373 struct ciss_error_info *ciss_error_info)
5374 {
5375 int ciss_cmd_status;
5376 size_t sense_data_length;
5377
5378 switch (pqi_error_info->data_out_result) {
5379 case PQI_DATA_IN_OUT_GOOD:
5380 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
5381 break;
5382 case PQI_DATA_IN_OUT_UNDERFLOW:
5383 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
5384 break;
5385 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
5386 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
5387 break;
5388 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
5389 case PQI_DATA_IN_OUT_BUFFER_ERROR:
5390 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
5391 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
5392 case PQI_DATA_IN_OUT_ERROR:
5393 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
5394 break;
5395 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
5396 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
5397 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
5398 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
5399 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
5400 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
5401 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
5402 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
5403 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
5404 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
5405 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
5406 break;
5407 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
5408 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
5409 break;
5410 case PQI_DATA_IN_OUT_ABORTED:
5411 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
5412 break;
5413 case PQI_DATA_IN_OUT_TIMEOUT:
5414 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
5415 break;
5416 default:
5417 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
5418 break;
5419 }
5420
5421 sense_data_length =
5422 get_unaligned_le16(&pqi_error_info->sense_data_length);
5423 if (sense_data_length == 0)
5424 sense_data_length =
5425 get_unaligned_le16(&pqi_error_info->response_data_length);
5426 if (sense_data_length)
5427 if (sense_data_length > sizeof(pqi_error_info->data))
5428 sense_data_length = sizeof(pqi_error_info->data);
5429
5430 ciss_error_info->scsi_status = pqi_error_info->status;
5431 ciss_error_info->command_status = ciss_cmd_status;
5432 ciss_error_info->sense_data_length = sense_data_length;
5433 }
5434
5435 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
5436 {
5437 int rc;
5438 char *kernel_buffer = NULL;
5439 u16 iu_length;
5440 size_t sense_data_length;
5441 IOCTL_Command_struct iocommand;
5442 struct pqi_raid_path_request request;
5443 struct pqi_raid_error_info pqi_error_info;
5444 struct ciss_error_info ciss_error_info;
5445
5446 if (pqi_ctrl_offline(ctrl_info))
5447 return -ENXIO;
5448 if (!arg)
5449 return -EINVAL;
5450 if (!capable(CAP_SYS_RAWIO))
5451 return -EPERM;
5452 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
5453 return -EFAULT;
5454 if (iocommand.buf_size < 1 &&
5455 iocommand.Request.Type.Direction != XFER_NONE)
5456 return -EINVAL;
5457 if (iocommand.Request.CDBLen > sizeof(request.cdb))
5458 return -EINVAL;
5459 if (iocommand.Request.Type.Type != TYPE_CMD)
5460 return -EINVAL;
5461
5462 switch (iocommand.Request.Type.Direction) {
5463 case XFER_NONE:
5464 case XFER_WRITE:
5465 case XFER_READ:
5466 case XFER_READ | XFER_WRITE:
5467 break;
5468 default:
5469 return -EINVAL;
5470 }
5471
5472 if (iocommand.buf_size > 0) {
5473 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
5474 if (!kernel_buffer)
5475 return -ENOMEM;
5476 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5477 if (copy_from_user(kernel_buffer, iocommand.buf,
5478 iocommand.buf_size)) {
5479 rc = -EFAULT;
5480 goto out;
5481 }
5482 } else {
5483 memset(kernel_buffer, 0, iocommand.buf_size);
5484 }
5485 }
5486
5487 memset(&request, 0, sizeof(request));
5488
5489 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
5490 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
5491 PQI_REQUEST_HEADER_LENGTH;
5492 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
5493 sizeof(request.lun_number));
5494 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
5495 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
5496
5497 switch (iocommand.Request.Type.Direction) {
5498 case XFER_NONE:
5499 request.data_direction = SOP_NO_DIRECTION_FLAG;
5500 break;
5501 case XFER_WRITE:
5502 request.data_direction = SOP_WRITE_FLAG;
5503 break;
5504 case XFER_READ:
5505 request.data_direction = SOP_READ_FLAG;
5506 break;
5507 case XFER_READ | XFER_WRITE:
5508 request.data_direction = SOP_BIDIRECTIONAL;
5509 break;
5510 }
5511
5512 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5513
5514 if (iocommand.buf_size > 0) {
5515 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
5516
5517 rc = pqi_map_single(ctrl_info->pci_dev,
5518 &request.sg_descriptors[0], kernel_buffer,
5519 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
5520 if (rc)
5521 goto out;
5522
5523 iu_length += sizeof(request.sg_descriptors[0]);
5524 }
5525
5526 put_unaligned_le16(iu_length, &request.header.iu_length);
5527
5528 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
5529 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
5530
5531 if (iocommand.buf_size > 0)
5532 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
5533 PCI_DMA_BIDIRECTIONAL);
5534
5535 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
5536
5537 if (rc == 0) {
5538 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
5539 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
5540 iocommand.error_info.CommandStatus =
5541 ciss_error_info.command_status;
5542 sense_data_length = ciss_error_info.sense_data_length;
5543 if (sense_data_length) {
5544 if (sense_data_length >
5545 sizeof(iocommand.error_info.SenseInfo))
5546 sense_data_length =
5547 sizeof(iocommand.error_info.SenseInfo);
5548 memcpy(iocommand.error_info.SenseInfo,
5549 pqi_error_info.data, sense_data_length);
5550 iocommand.error_info.SenseLen = sense_data_length;
5551 }
5552 }
5553
5554 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
5555 rc = -EFAULT;
5556 goto out;
5557 }
5558
5559 if (rc == 0 && iocommand.buf_size > 0 &&
5560 (iocommand.Request.Type.Direction & XFER_READ)) {
5561 if (copy_to_user(iocommand.buf, kernel_buffer,
5562 iocommand.buf_size)) {
5563 rc = -EFAULT;
5564 }
5565 }
5566
5567 out:
5568 kfree(kernel_buffer);
5569
5570 return rc;
5571 }
5572
5573 static int pqi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5574 {
5575 int rc;
5576 struct pqi_ctrl_info *ctrl_info;
5577
5578 ctrl_info = shost_to_hba(sdev->host);
5579
5580 switch (cmd) {
5581 case CCISS_DEREGDISK:
5582 case CCISS_REGNEWDISK:
5583 case CCISS_REGNEWD:
5584 rc = pqi_scan_scsi_devices(ctrl_info);
5585 break;
5586 case CCISS_GETPCIINFO:
5587 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
5588 break;
5589 case CCISS_GETDRIVVER:
5590 rc = pqi_getdrivver_ioctl(arg);
5591 break;
5592 case CCISS_PASSTHRU:
5593 rc = pqi_passthru_ioctl(ctrl_info, arg);
5594 break;
5595 default:
5596 rc = -EINVAL;
5597 break;
5598 }
5599
5600 return rc;
5601 }
5602
5603 static ssize_t pqi_version_show(struct device *dev,
5604 struct device_attribute *attr, char *buffer)
5605 {
5606 ssize_t count = 0;
5607 struct Scsi_Host *shost;
5608 struct pqi_ctrl_info *ctrl_info;
5609
5610 shost = class_to_shost(dev);
5611 ctrl_info = shost_to_hba(shost);
5612
5613 count += snprintf(buffer + count, PAGE_SIZE - count,
5614 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP);
5615
5616 count += snprintf(buffer + count, PAGE_SIZE - count,
5617 "firmware: %s\n", ctrl_info->firmware_version);
5618
5619 return count;
5620 }
5621
5622 static ssize_t pqi_host_rescan_store(struct device *dev,
5623 struct device_attribute *attr, const char *buffer, size_t count)
5624 {
5625 struct Scsi_Host *shost = class_to_shost(dev);
5626
5627 pqi_scan_start(shost);
5628
5629 return count;
5630 }
5631
5632 static ssize_t pqi_lockup_action_show(struct device *dev,
5633 struct device_attribute *attr, char *buffer)
5634 {
5635 int count = 0;
5636 unsigned int i;
5637
5638 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
5639 if (pqi_lockup_actions[i].action == pqi_lockup_action)
5640 count += snprintf(buffer + count, PAGE_SIZE - count,
5641 "[%s] ", pqi_lockup_actions[i].name);
5642 else
5643 count += snprintf(buffer + count, PAGE_SIZE - count,
5644 "%s ", pqi_lockup_actions[i].name);
5645 }
5646
5647 count += snprintf(buffer + count, PAGE_SIZE - count, "\n");
5648
5649 return count;
5650 }
5651
5652 static ssize_t pqi_lockup_action_store(struct device *dev,
5653 struct device_attribute *attr, const char *buffer, size_t count)
5654 {
5655 unsigned int i;
5656 char *action_name;
5657 char action_name_buffer[32];
5658
5659 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
5660 action_name = strstrip(action_name_buffer);
5661
5662 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
5663 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
5664 pqi_lockup_action = pqi_lockup_actions[i].action;
5665 return count;
5666 }
5667 }
5668
5669 return -EINVAL;
5670 }
5671
5672 static DEVICE_ATTR(version, 0444, pqi_version_show, NULL);
5673 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
5674 static DEVICE_ATTR(lockup_action, 0644,
5675 pqi_lockup_action_show, pqi_lockup_action_store);
5676
5677 static struct device_attribute *pqi_shost_attrs[] = {
5678 &dev_attr_version,
5679 &dev_attr_rescan,
5680 &dev_attr_lockup_action,
5681 NULL
5682 };
5683
5684 static ssize_t pqi_sas_address_show(struct device *dev,
5685 struct device_attribute *attr, char *buffer)
5686 {
5687 struct pqi_ctrl_info *ctrl_info;
5688 struct scsi_device *sdev;
5689 struct pqi_scsi_dev *device;
5690 unsigned long flags;
5691 u64 sas_address;
5692
5693 sdev = to_scsi_device(dev);
5694 ctrl_info = shost_to_hba(sdev->host);
5695
5696 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5697
5698 device = sdev->hostdata;
5699 if (pqi_is_logical_device(device)) {
5700 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5701 flags);
5702 return -ENODEV;
5703 }
5704 sas_address = device->sas_address;
5705
5706 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5707
5708 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
5709 }
5710
5711 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
5712 struct device_attribute *attr, char *buffer)
5713 {
5714 struct pqi_ctrl_info *ctrl_info;
5715 struct scsi_device *sdev;
5716 struct pqi_scsi_dev *device;
5717 unsigned long flags;
5718
5719 sdev = to_scsi_device(dev);
5720 ctrl_info = shost_to_hba(sdev->host);
5721
5722 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5723
5724 device = sdev->hostdata;
5725 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
5726 buffer[1] = '\n';
5727 buffer[2] = '\0';
5728
5729 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5730
5731 return 2;
5732 }
5733
5734 static ssize_t pqi_raid_level_show(struct device *dev,
5735 struct device_attribute *attr, char *buffer)
5736 {
5737 struct pqi_ctrl_info *ctrl_info;
5738 struct scsi_device *sdev;
5739 struct pqi_scsi_dev *device;
5740 unsigned long flags;
5741 char *raid_level;
5742
5743 sdev = to_scsi_device(dev);
5744 ctrl_info = shost_to_hba(sdev->host);
5745
5746 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5747
5748 device = sdev->hostdata;
5749
5750 if (pqi_is_logical_device(device))
5751 raid_level = pqi_raid_level_to_string(device->raid_level);
5752 else
5753 raid_level = "N/A";
5754
5755 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5756
5757 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
5758 }
5759
5760 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
5761 static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
5762 pqi_ssd_smart_path_enabled_show, NULL);
5763 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
5764
5765 static struct device_attribute *pqi_sdev_attrs[] = {
5766 &dev_attr_sas_address,
5767 &dev_attr_ssd_smart_path_enabled,
5768 &dev_attr_raid_level,
5769 NULL
5770 };
5771
5772 static struct scsi_host_template pqi_driver_template = {
5773 .module = THIS_MODULE,
5774 .name = DRIVER_NAME_SHORT,
5775 .proc_name = DRIVER_NAME_SHORT,
5776 .queuecommand = pqi_scsi_queue_command,
5777 .scan_start = pqi_scan_start,
5778 .scan_finished = pqi_scan_finished,
5779 .this_id = -1,
5780 .use_clustering = ENABLE_CLUSTERING,
5781 .eh_device_reset_handler = pqi_eh_device_reset_handler,
5782 .ioctl = pqi_ioctl,
5783 .slave_alloc = pqi_slave_alloc,
5784 .map_queues = pqi_map_queues,
5785 .sdev_attrs = pqi_sdev_attrs,
5786 .shost_attrs = pqi_shost_attrs,
5787 };
5788
5789 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
5790 {
5791 int rc;
5792 struct Scsi_Host *shost;
5793
5794 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
5795 if (!shost) {
5796 dev_err(&ctrl_info->pci_dev->dev,
5797 "scsi_host_alloc failed for controller %u\n",
5798 ctrl_info->ctrl_id);
5799 return -ENOMEM;
5800 }
5801
5802 shost->io_port = 0;
5803 shost->n_io_port = 0;
5804 shost->this_id = -1;
5805 shost->max_channel = PQI_MAX_BUS;
5806 shost->max_cmd_len = MAX_COMMAND_SIZE;
5807 shost->max_lun = ~0;
5808 shost->max_id = ~0;
5809 shost->max_sectors = ctrl_info->max_sectors;
5810 shost->can_queue = ctrl_info->scsi_ml_can_queue;
5811 shost->cmd_per_lun = shost->can_queue;
5812 shost->sg_tablesize = ctrl_info->sg_tablesize;
5813 shost->transportt = pqi_sas_transport_template;
5814 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
5815 shost->unique_id = shost->irq;
5816 shost->nr_hw_queues = ctrl_info->num_queue_groups;
5817 shost->hostdata[0] = (unsigned long)ctrl_info;
5818
5819 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
5820 if (rc) {
5821 dev_err(&ctrl_info->pci_dev->dev,
5822 "scsi_add_host failed for controller %u\n",
5823 ctrl_info->ctrl_id);
5824 goto free_host;
5825 }
5826
5827 rc = pqi_add_sas_host(shost, ctrl_info);
5828 if (rc) {
5829 dev_err(&ctrl_info->pci_dev->dev,
5830 "add SAS host failed for controller %u\n",
5831 ctrl_info->ctrl_id);
5832 goto remove_host;
5833 }
5834
5835 ctrl_info->scsi_host = shost;
5836
5837 return 0;
5838
5839 remove_host:
5840 scsi_remove_host(shost);
5841 free_host:
5842 scsi_host_put(shost);
5843
5844 return rc;
5845 }
5846
5847 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
5848 {
5849 struct Scsi_Host *shost;
5850
5851 pqi_delete_sas_host(ctrl_info);
5852
5853 shost = ctrl_info->scsi_host;
5854 if (!shost)
5855 return;
5856
5857 scsi_remove_host(shost);
5858 scsi_host_put(shost);
5859 }
5860
5861 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
5862 {
5863 int rc = 0;
5864 struct pqi_device_registers __iomem *pqi_registers;
5865 unsigned long timeout;
5866 unsigned int timeout_msecs;
5867 union pqi_reset_register reset_reg;
5868
5869 pqi_registers = ctrl_info->pqi_registers;
5870 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
5871 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
5872
5873 while (1) {
5874 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
5875 reset_reg.all_bits = readl(&pqi_registers->device_reset);
5876 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
5877 break;
5878 pqi_check_ctrl_health(ctrl_info);
5879 if (pqi_ctrl_offline(ctrl_info)) {
5880 rc = -ENXIO;
5881 break;
5882 }
5883 if (time_after(jiffies, timeout)) {
5884 rc = -ETIMEDOUT;
5885 break;
5886 }
5887 }
5888
5889 return rc;
5890 }
5891
5892 static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
5893 {
5894 int rc;
5895 union pqi_reset_register reset_reg;
5896
5897 if (ctrl_info->pqi_reset_quiesce_supported) {
5898 rc = sis_pqi_reset_quiesce(ctrl_info);
5899 if (rc) {
5900 dev_err(&ctrl_info->pci_dev->dev,
5901 "PQI reset failed during quiesce with error %d\n",
5902 rc);
5903 return rc;
5904 }
5905 }
5906
5907 reset_reg.all_bits = 0;
5908 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
5909 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
5910
5911 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
5912
5913 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
5914 if (rc)
5915 dev_err(&ctrl_info->pci_dev->dev,
5916 "PQI reset failed with error %d\n", rc);
5917
5918 return rc;
5919 }
5920
5921 static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info)
5922 {
5923 int rc;
5924 struct bmic_identify_controller *identify;
5925
5926 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
5927 if (!identify)
5928 return -ENOMEM;
5929
5930 rc = pqi_identify_controller(ctrl_info, identify);
5931 if (rc)
5932 goto out;
5933
5934 memcpy(ctrl_info->firmware_version, identify->firmware_version,
5935 sizeof(identify->firmware_version));
5936 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
5937 snprintf(ctrl_info->firmware_version +
5938 strlen(ctrl_info->firmware_version),
5939 sizeof(ctrl_info->firmware_version),
5940 "-%u", get_unaligned_le16(&identify->firmware_build_number));
5941
5942 out:
5943 kfree(identify);
5944
5945 return rc;
5946 }
5947
5948 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
5949 {
5950 u32 table_length;
5951 u32 section_offset;
5952 void __iomem *table_iomem_addr;
5953 struct pqi_config_table *config_table;
5954 struct pqi_config_table_section_header *section;
5955
5956 table_length = ctrl_info->config_table_length;
5957
5958 config_table = kmalloc(table_length, GFP_KERNEL);
5959 if (!config_table) {
5960 dev_err(&ctrl_info->pci_dev->dev,
5961 "failed to allocate memory for PQI configuration table\n");
5962 return -ENOMEM;
5963 }
5964
5965 /*
5966 * Copy the config table contents from I/O memory space into the
5967 * temporary buffer.
5968 */
5969 table_iomem_addr = ctrl_info->iomem_base +
5970 ctrl_info->config_table_offset;
5971 memcpy_fromio(config_table, table_iomem_addr, table_length);
5972
5973 section_offset =
5974 get_unaligned_le32(&config_table->first_section_offset);
5975
5976 while (section_offset) {
5977 section = (void *)config_table + section_offset;
5978
5979 switch (get_unaligned_le16(&section->section_id)) {
5980 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
5981 if (pqi_disable_heartbeat)
5982 dev_warn(&ctrl_info->pci_dev->dev,
5983 "heartbeat disabled by module parameter\n");
5984 else
5985 ctrl_info->heartbeat_counter =
5986 table_iomem_addr +
5987 section_offset +
5988 offsetof(
5989 struct pqi_config_table_heartbeat,
5990 heartbeat_counter);
5991 break;
5992 }
5993
5994 section_offset =
5995 get_unaligned_le16(&section->next_section_offset);
5996 }
5997
5998 kfree(config_table);
5999
6000 return 0;
6001 }
6002
6003 /* Switches the controller from PQI mode back into SIS mode. */
6004
6005 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
6006 {
6007 int rc;
6008
6009 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
6010 rc = pqi_reset(ctrl_info);
6011 if (rc)
6012 return rc;
6013 rc = sis_reenable_sis_mode(ctrl_info);
6014 if (rc) {
6015 dev_err(&ctrl_info->pci_dev->dev,
6016 "re-enabling SIS mode failed with error %d\n", rc);
6017 return rc;
6018 }
6019 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6020
6021 return 0;
6022 }
6023
6024 /*
6025 * If the controller isn't already in SIS mode, this function forces it into
6026 * SIS mode.
6027 */
6028
6029 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
6030 {
6031 if (!sis_is_firmware_running(ctrl_info))
6032 return -ENXIO;
6033
6034 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
6035 return 0;
6036
6037 if (sis_is_kernel_up(ctrl_info)) {
6038 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6039 return 0;
6040 }
6041
6042 return pqi_revert_to_sis_mode(ctrl_info);
6043 }
6044
6045 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
6046 {
6047 int rc;
6048
6049 rc = pqi_force_sis_mode(ctrl_info);
6050 if (rc)
6051 return rc;
6052
6053 /*
6054 * Wait until the controller is ready to start accepting SIS
6055 * commands.
6056 */
6057 rc = sis_wait_for_ctrl_ready(ctrl_info);
6058 if (rc)
6059 return rc;
6060
6061 /*
6062 * Get the controller properties. This allows us to determine
6063 * whether or not it supports PQI mode.
6064 */
6065 rc = sis_get_ctrl_properties(ctrl_info);
6066 if (rc) {
6067 dev_err(&ctrl_info->pci_dev->dev,
6068 "error obtaining controller properties\n");
6069 return rc;
6070 }
6071
6072 rc = sis_get_pqi_capabilities(ctrl_info);
6073 if (rc) {
6074 dev_err(&ctrl_info->pci_dev->dev,
6075 "error obtaining controller capabilities\n");
6076 return rc;
6077 }
6078
6079 if (reset_devices) {
6080 if (ctrl_info->max_outstanding_requests >
6081 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
6082 ctrl_info->max_outstanding_requests =
6083 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
6084 } else {
6085 if (ctrl_info->max_outstanding_requests >
6086 PQI_MAX_OUTSTANDING_REQUESTS)
6087 ctrl_info->max_outstanding_requests =
6088 PQI_MAX_OUTSTANDING_REQUESTS;
6089 }
6090
6091 pqi_calculate_io_resources(ctrl_info);
6092
6093 rc = pqi_alloc_error_buffer(ctrl_info);
6094 if (rc) {
6095 dev_err(&ctrl_info->pci_dev->dev,
6096 "failed to allocate PQI error buffer\n");
6097 return rc;
6098 }
6099
6100 /*
6101 * If the function we are about to call succeeds, the
6102 * controller will transition from legacy SIS mode
6103 * into PQI mode.
6104 */
6105 rc = sis_init_base_struct_addr(ctrl_info);
6106 if (rc) {
6107 dev_err(&ctrl_info->pci_dev->dev,
6108 "error initializing PQI mode\n");
6109 return rc;
6110 }
6111
6112 /* Wait for the controller to complete the SIS -> PQI transition. */
6113 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6114 if (rc) {
6115 dev_err(&ctrl_info->pci_dev->dev,
6116 "transition to PQI mode failed\n");
6117 return rc;
6118 }
6119
6120 /* From here on, we are running in PQI mode. */
6121 ctrl_info->pqi_mode_enabled = true;
6122 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6123
6124 rc = pqi_process_config_table(ctrl_info);
6125 if (rc)
6126 return rc;
6127
6128 rc = pqi_alloc_admin_queues(ctrl_info);
6129 if (rc) {
6130 dev_err(&ctrl_info->pci_dev->dev,
6131 "failed to allocate admin queues\n");
6132 return rc;
6133 }
6134
6135 rc = pqi_create_admin_queues(ctrl_info);
6136 if (rc) {
6137 dev_err(&ctrl_info->pci_dev->dev,
6138 "error creating admin queues\n");
6139 return rc;
6140 }
6141
6142 rc = pqi_report_device_capability(ctrl_info);
6143 if (rc) {
6144 dev_err(&ctrl_info->pci_dev->dev,
6145 "obtaining device capability failed\n");
6146 return rc;
6147 }
6148
6149 rc = pqi_validate_device_capability(ctrl_info);
6150 if (rc)
6151 return rc;
6152
6153 pqi_calculate_queue_resources(ctrl_info);
6154
6155 rc = pqi_enable_msix_interrupts(ctrl_info);
6156 if (rc)
6157 return rc;
6158
6159 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
6160 ctrl_info->max_msix_vectors =
6161 ctrl_info->num_msix_vectors_enabled;
6162 pqi_calculate_queue_resources(ctrl_info);
6163 }
6164
6165 rc = pqi_alloc_io_resources(ctrl_info);
6166 if (rc)
6167 return rc;
6168
6169 rc = pqi_alloc_operational_queues(ctrl_info);
6170 if (rc) {
6171 dev_err(&ctrl_info->pci_dev->dev,
6172 "failed to allocate operational queues\n");
6173 return rc;
6174 }
6175
6176 pqi_init_operational_queues(ctrl_info);
6177
6178 rc = pqi_request_irqs(ctrl_info);
6179 if (rc)
6180 return rc;
6181
6182 rc = pqi_create_queues(ctrl_info);
6183 if (rc)
6184 return rc;
6185
6186 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
6187
6188 ctrl_info->controller_online = true;
6189 pqi_start_heartbeat_timer(ctrl_info);
6190
6191 rc = pqi_enable_events(ctrl_info);
6192 if (rc) {
6193 dev_err(&ctrl_info->pci_dev->dev,
6194 "error enabling events\n");
6195 return rc;
6196 }
6197
6198 /* Register with the SCSI subsystem. */
6199 rc = pqi_register_scsi(ctrl_info);
6200 if (rc)
6201 return rc;
6202
6203 rc = pqi_get_ctrl_firmware_version(ctrl_info);
6204 if (rc) {
6205 dev_err(&ctrl_info->pci_dev->dev,
6206 "error obtaining firmware version\n");
6207 return rc;
6208 }
6209
6210 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
6211 if (rc) {
6212 dev_err(&ctrl_info->pci_dev->dev,
6213 "error updating host wellness\n");
6214 return rc;
6215 }
6216
6217 pqi_schedule_update_time_worker(ctrl_info);
6218
6219 pqi_scan_scsi_devices(ctrl_info);
6220
6221 return 0;
6222 }
6223
6224 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
6225 {
6226 unsigned int i;
6227 struct pqi_admin_queues *admin_queues;
6228 struct pqi_event_queue *event_queue;
6229
6230 admin_queues = &ctrl_info->admin_queues;
6231 admin_queues->iq_pi_copy = 0;
6232 admin_queues->oq_ci_copy = 0;
6233 *admin_queues->oq_pi = 0;
6234
6235 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
6236 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
6237 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
6238 ctrl_info->queue_groups[i].oq_ci_copy = 0;
6239
6240 *ctrl_info->queue_groups[i].iq_ci[RAID_PATH] = 0;
6241 *ctrl_info->queue_groups[i].iq_ci[AIO_PATH] = 0;
6242 *ctrl_info->queue_groups[i].oq_pi = 0;
6243 }
6244
6245 event_queue = &ctrl_info->event_queue;
6246 *event_queue->oq_pi = 0;
6247 event_queue->oq_ci_copy = 0;
6248 }
6249
6250 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
6251 {
6252 int rc;
6253
6254 rc = pqi_force_sis_mode(ctrl_info);
6255 if (rc)
6256 return rc;
6257
6258 /*
6259 * Wait until the controller is ready to start accepting SIS
6260 * commands.
6261 */
6262 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
6263 if (rc)
6264 return rc;
6265
6266 /*
6267 * If the function we are about to call succeeds, the
6268 * controller will transition from legacy SIS mode
6269 * into PQI mode.
6270 */
6271 rc = sis_init_base_struct_addr(ctrl_info);
6272 if (rc) {
6273 dev_err(&ctrl_info->pci_dev->dev,
6274 "error initializing PQI mode\n");
6275 return rc;
6276 }
6277
6278 /* Wait for the controller to complete the SIS -> PQI transition. */
6279 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6280 if (rc) {
6281 dev_err(&ctrl_info->pci_dev->dev,
6282 "transition to PQI mode failed\n");
6283 return rc;
6284 }
6285
6286 /* From here on, we are running in PQI mode. */
6287 ctrl_info->pqi_mode_enabled = true;
6288 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6289
6290 pqi_reinit_queues(ctrl_info);
6291
6292 rc = pqi_create_admin_queues(ctrl_info);
6293 if (rc) {
6294 dev_err(&ctrl_info->pci_dev->dev,
6295 "error creating admin queues\n");
6296 return rc;
6297 }
6298
6299 rc = pqi_create_queues(ctrl_info);
6300 if (rc)
6301 return rc;
6302
6303 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
6304
6305 ctrl_info->controller_online = true;
6306 pqi_start_heartbeat_timer(ctrl_info);
6307 pqi_ctrl_unblock_requests(ctrl_info);
6308
6309 rc = pqi_enable_events(ctrl_info);
6310 if (rc) {
6311 dev_err(&ctrl_info->pci_dev->dev,
6312 "error enabling events\n");
6313 return rc;
6314 }
6315
6316 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
6317 if (rc) {
6318 dev_err(&ctrl_info->pci_dev->dev,
6319 "error updating host wellness\n");
6320 return rc;
6321 }
6322
6323 pqi_schedule_update_time_worker(ctrl_info);
6324
6325 pqi_scan_scsi_devices(ctrl_info);
6326
6327 return 0;
6328 }
6329
6330 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
6331 u16 timeout)
6332 {
6333 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
6334 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
6335 }
6336
6337 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
6338 {
6339 int rc;
6340 u64 mask;
6341
6342 rc = pci_enable_device(ctrl_info->pci_dev);
6343 if (rc) {
6344 dev_err(&ctrl_info->pci_dev->dev,
6345 "failed to enable PCI device\n");
6346 return rc;
6347 }
6348
6349 if (sizeof(dma_addr_t) > 4)
6350 mask = DMA_BIT_MASK(64);
6351 else
6352 mask = DMA_BIT_MASK(32);
6353
6354 rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask);
6355 if (rc) {
6356 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
6357 goto disable_device;
6358 }
6359
6360 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
6361 if (rc) {
6362 dev_err(&ctrl_info->pci_dev->dev,
6363 "failed to obtain PCI resources\n");
6364 goto disable_device;
6365 }
6366
6367 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start(
6368 ctrl_info->pci_dev, 0),
6369 sizeof(struct pqi_ctrl_registers));
6370 if (!ctrl_info->iomem_base) {
6371 dev_err(&ctrl_info->pci_dev->dev,
6372 "failed to map memory for controller registers\n");
6373 rc = -ENOMEM;
6374 goto release_regions;
6375 }
6376
6377 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
6378
6379 /* Increase the PCIe completion timeout. */
6380 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
6381 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
6382 if (rc) {
6383 dev_err(&ctrl_info->pci_dev->dev,
6384 "failed to set PCIe completion timeout\n");
6385 goto release_regions;
6386 }
6387
6388 /* Enable bus mastering. */
6389 pci_set_master(ctrl_info->pci_dev);
6390
6391 ctrl_info->registers = ctrl_info->iomem_base;
6392 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
6393
6394 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
6395
6396 return 0;
6397
6398 release_regions:
6399 pci_release_regions(ctrl_info->pci_dev);
6400 disable_device:
6401 pci_disable_device(ctrl_info->pci_dev);
6402
6403 return rc;
6404 }
6405
6406 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
6407 {
6408 iounmap(ctrl_info->iomem_base);
6409 pci_release_regions(ctrl_info->pci_dev);
6410 if (pci_is_enabled(ctrl_info->pci_dev))
6411 pci_disable_device(ctrl_info->pci_dev);
6412 pci_set_drvdata(ctrl_info->pci_dev, NULL);
6413 }
6414
6415 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
6416 {
6417 struct pqi_ctrl_info *ctrl_info;
6418
6419 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
6420 GFP_KERNEL, numa_node);
6421 if (!ctrl_info)
6422 return NULL;
6423
6424 mutex_init(&ctrl_info->scan_mutex);
6425 mutex_init(&ctrl_info->lun_reset_mutex);
6426
6427 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
6428 spin_lock_init(&ctrl_info->scsi_device_list_lock);
6429
6430 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
6431 atomic_set(&ctrl_info->num_interrupts, 0);
6432
6433 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
6434 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
6435
6436 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
6437 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
6438
6439 sema_init(&ctrl_info->sync_request_sem,
6440 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
6441 init_waitqueue_head(&ctrl_info->block_requests_wait);
6442
6443 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
6444 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
6445 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
6446 pqi_raid_bypass_retry_worker);
6447
6448 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
6449 ctrl_info->irq_mode = IRQ_MODE_NONE;
6450 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
6451
6452 return ctrl_info;
6453 }
6454
6455 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
6456 {
6457 kfree(ctrl_info);
6458 }
6459
6460 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
6461 {
6462 pqi_free_irqs(ctrl_info);
6463 pqi_disable_msix_interrupts(ctrl_info);
6464 }
6465
6466 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
6467 {
6468 pqi_stop_heartbeat_timer(ctrl_info);
6469 pqi_free_interrupts(ctrl_info);
6470 if (ctrl_info->queue_memory_base)
6471 dma_free_coherent(&ctrl_info->pci_dev->dev,
6472 ctrl_info->queue_memory_length,
6473 ctrl_info->queue_memory_base,
6474 ctrl_info->queue_memory_base_dma_handle);
6475 if (ctrl_info->admin_queue_memory_base)
6476 dma_free_coherent(&ctrl_info->pci_dev->dev,
6477 ctrl_info->admin_queue_memory_length,
6478 ctrl_info->admin_queue_memory_base,
6479 ctrl_info->admin_queue_memory_base_dma_handle);
6480 pqi_free_all_io_requests(ctrl_info);
6481 if (ctrl_info->error_buffer)
6482 dma_free_coherent(&ctrl_info->pci_dev->dev,
6483 ctrl_info->error_buffer_length,
6484 ctrl_info->error_buffer,
6485 ctrl_info->error_buffer_dma_handle);
6486 if (ctrl_info->iomem_base)
6487 pqi_cleanup_pci_init(ctrl_info);
6488 pqi_free_ctrl_info(ctrl_info);
6489 }
6490
6491 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
6492 {
6493 pqi_cancel_rescan_worker(ctrl_info);
6494 pqi_cancel_update_time_worker(ctrl_info);
6495 pqi_remove_all_scsi_devices(ctrl_info);
6496 pqi_unregister_scsi(ctrl_info);
6497 if (ctrl_info->pqi_mode_enabled)
6498 pqi_revert_to_sis_mode(ctrl_info);
6499 pqi_free_ctrl_resources(ctrl_info);
6500 }
6501
6502 static void pqi_perform_lockup_action(void)
6503 {
6504 switch (pqi_lockup_action) {
6505 case PANIC:
6506 panic("FATAL: Smart Family Controller lockup detected");
6507 break;
6508 case REBOOT:
6509 emergency_restart();
6510 break;
6511 case NONE:
6512 default:
6513 break;
6514 }
6515 }
6516
6517 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
6518 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
6519 .status = SAM_STAT_CHECK_CONDITION,
6520 };
6521
6522 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
6523 {
6524 unsigned int i;
6525 struct pqi_io_request *io_request;
6526 struct scsi_cmnd *scmd;
6527
6528 for (i = 0; i < ctrl_info->max_io_slots; i++) {
6529 io_request = &ctrl_info->io_request_pool[i];
6530 if (atomic_read(&io_request->refcount) == 0)
6531 continue;
6532
6533 scmd = io_request->scmd;
6534 if (scmd) {
6535 set_host_byte(scmd, DID_NO_CONNECT);
6536 } else {
6537 io_request->status = -ENXIO;
6538 io_request->error_info =
6539 &pqi_ctrl_offline_raid_error_info;
6540 }
6541
6542 io_request->io_complete_callback(io_request,
6543 io_request->context);
6544 }
6545 }
6546
6547 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
6548 {
6549 pqi_perform_lockup_action();
6550 pqi_stop_heartbeat_timer(ctrl_info);
6551 pqi_free_interrupts(ctrl_info);
6552 pqi_cancel_rescan_worker(ctrl_info);
6553 pqi_cancel_update_time_worker(ctrl_info);
6554 pqi_ctrl_wait_until_quiesced(ctrl_info);
6555 pqi_fail_all_outstanding_requests(ctrl_info);
6556 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
6557 pqi_ctrl_unblock_requests(ctrl_info);
6558 }
6559
6560 static void pqi_ctrl_offline_worker(struct work_struct *work)
6561 {
6562 struct pqi_ctrl_info *ctrl_info;
6563
6564 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
6565 pqi_take_ctrl_offline_deferred(ctrl_info);
6566 }
6567
6568 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
6569 {
6570 if (!ctrl_info->controller_online)
6571 return;
6572
6573 ctrl_info->controller_online = false;
6574 ctrl_info->pqi_mode_enabled = false;
6575 pqi_ctrl_block_requests(ctrl_info);
6576 if (!pqi_disable_ctrl_shutdown)
6577 sis_shutdown_ctrl(ctrl_info);
6578 pci_disable_device(ctrl_info->pci_dev);
6579 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
6580 schedule_work(&ctrl_info->ctrl_offline_work);
6581 }
6582
6583 static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
6584 const struct pci_device_id *id)
6585 {
6586 char *ctrl_description;
6587
6588 if (id->driver_data)
6589 ctrl_description = (char *)id->driver_data;
6590 else
6591 ctrl_description = "Microsemi Smart Family Controller";
6592
6593 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
6594 }
6595
6596 static int pqi_pci_probe(struct pci_dev *pci_dev,
6597 const struct pci_device_id *id)
6598 {
6599 int rc;
6600 int node;
6601 struct pqi_ctrl_info *ctrl_info;
6602
6603 pqi_print_ctrl_info(pci_dev, id);
6604
6605 if (pqi_disable_device_id_wildcards &&
6606 id->subvendor == PCI_ANY_ID &&
6607 id->subdevice == PCI_ANY_ID) {
6608 dev_warn(&pci_dev->dev,
6609 "controller not probed because device ID wildcards are disabled\n");
6610 return -ENODEV;
6611 }
6612
6613 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
6614 dev_warn(&pci_dev->dev,
6615 "controller device ID matched using wildcards\n");
6616
6617 node = dev_to_node(&pci_dev->dev);
6618 if (node == NUMA_NO_NODE)
6619 set_dev_node(&pci_dev->dev, 0);
6620
6621 ctrl_info = pqi_alloc_ctrl_info(node);
6622 if (!ctrl_info) {
6623 dev_err(&pci_dev->dev,
6624 "failed to allocate controller info block\n");
6625 return -ENOMEM;
6626 }
6627
6628 ctrl_info->pci_dev = pci_dev;
6629
6630 rc = pqi_pci_init(ctrl_info);
6631 if (rc)
6632 goto error;
6633
6634 rc = pqi_ctrl_init(ctrl_info);
6635 if (rc)
6636 goto error;
6637
6638 return 0;
6639
6640 error:
6641 pqi_remove_ctrl(ctrl_info);
6642
6643 return rc;
6644 }
6645
6646 static void pqi_pci_remove(struct pci_dev *pci_dev)
6647 {
6648 struct pqi_ctrl_info *ctrl_info;
6649
6650 ctrl_info = pci_get_drvdata(pci_dev);
6651 if (!ctrl_info)
6652 return;
6653
6654 pqi_remove_ctrl(ctrl_info);
6655 }
6656
6657 static void pqi_shutdown(struct pci_dev *pci_dev)
6658 {
6659 int rc;
6660 struct pqi_ctrl_info *ctrl_info;
6661
6662 ctrl_info = pci_get_drvdata(pci_dev);
6663 if (!ctrl_info)
6664 goto error;
6665
6666 /*
6667 * Write all data in the controller's battery-backed cache to
6668 * storage.
6669 */
6670 rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
6671 pqi_reset(ctrl_info);
6672 if (rc == 0)
6673 return;
6674
6675 error:
6676 dev_warn(&pci_dev->dev,
6677 "unable to flush controller cache\n");
6678 }
6679
6680 static void pqi_process_lockup_action_param(void)
6681 {
6682 unsigned int i;
6683
6684 if (!pqi_lockup_action_param)
6685 return;
6686
6687 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6688 if (strcmp(pqi_lockup_action_param,
6689 pqi_lockup_actions[i].name) == 0) {
6690 pqi_lockup_action = pqi_lockup_actions[i].action;
6691 return;
6692 }
6693 }
6694
6695 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
6696 DRIVER_NAME_SHORT, pqi_lockup_action_param);
6697 }
6698
6699 static void pqi_process_module_params(void)
6700 {
6701 pqi_process_lockup_action_param();
6702 }
6703
6704 static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
6705 {
6706 struct pqi_ctrl_info *ctrl_info;
6707
6708 ctrl_info = pci_get_drvdata(pci_dev);
6709
6710 pqi_disable_events(ctrl_info);
6711 pqi_cancel_update_time_worker(ctrl_info);
6712 pqi_cancel_rescan_worker(ctrl_info);
6713 pqi_wait_until_scan_finished(ctrl_info);
6714 pqi_wait_until_lun_reset_finished(ctrl_info);
6715 pqi_flush_cache(ctrl_info, SUSPEND);
6716 pqi_ctrl_block_requests(ctrl_info);
6717 pqi_ctrl_wait_until_quiesced(ctrl_info);
6718 pqi_wait_until_inbound_queues_empty(ctrl_info);
6719 pqi_ctrl_wait_for_pending_io(ctrl_info);
6720 pqi_stop_heartbeat_timer(ctrl_info);
6721
6722 if (state.event == PM_EVENT_FREEZE)
6723 return 0;
6724
6725 pci_save_state(pci_dev);
6726 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
6727
6728 ctrl_info->controller_online = false;
6729 ctrl_info->pqi_mode_enabled = false;
6730
6731 return 0;
6732 }
6733
6734 static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
6735 {
6736 int rc;
6737 struct pqi_ctrl_info *ctrl_info;
6738
6739 ctrl_info = pci_get_drvdata(pci_dev);
6740
6741 if (pci_dev->current_state != PCI_D0) {
6742 ctrl_info->max_hw_queue_index = 0;
6743 pqi_free_interrupts(ctrl_info);
6744 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
6745 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
6746 IRQF_SHARED, DRIVER_NAME_SHORT,
6747 &ctrl_info->queue_groups[0]);
6748 if (rc) {
6749 dev_err(&ctrl_info->pci_dev->dev,
6750 "irq %u init failed with error %d\n",
6751 pci_dev->irq, rc);
6752 return rc;
6753 }
6754 pqi_start_heartbeat_timer(ctrl_info);
6755 pqi_ctrl_unblock_requests(ctrl_info);
6756 return 0;
6757 }
6758
6759 pci_set_power_state(pci_dev, PCI_D0);
6760 pci_restore_state(pci_dev);
6761
6762 return pqi_ctrl_init_resume(ctrl_info);
6763 }
6764
6765 /* Define the PCI IDs for the controllers that we support. */
6766 static const struct pci_device_id pqi_pci_id_table[] = {
6767 {
6768 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6769 0x105b, 0x1211)
6770 },
6771 {
6772 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6773 0x105b, 0x1321)
6774 },
6775 {
6776 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6777 0x152d, 0x8a22)
6778 },
6779 {
6780 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6781 0x152d, 0x8a23)
6782 },
6783 {
6784 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6785 0x152d, 0x8a24)
6786 },
6787 {
6788 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6789 0x152d, 0x8a36)
6790 },
6791 {
6792 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6793 0x152d, 0x8a37)
6794 },
6795 {
6796 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6797 0x193d, 0x8460)
6798 },
6799 {
6800 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6801 0x193d, 0x8461)
6802 },
6803 {
6804 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6805 0x193d, 0xf460)
6806 },
6807 {
6808 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6809 0x193d, 0xf461)
6810 },
6811 {
6812 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6813 0x1bd4, 0x0045)
6814 },
6815 {
6816 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6817 0x1bd4, 0x0046)
6818 },
6819 {
6820 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6821 0x1bd4, 0x0047)
6822 },
6823 {
6824 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6825 0x1bd4, 0x0048)
6826 },
6827 {
6828 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6829 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
6830 },
6831 {
6832 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6833 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
6834 },
6835 {
6836 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6837 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
6838 },
6839 {
6840 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6841 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
6842 },
6843 {
6844 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6845 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
6846 },
6847 {
6848 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6849 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
6850 },
6851 {
6852 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6853 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
6854 },
6855 {
6856 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6857 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
6858 },
6859 {
6860 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6861 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
6862 },
6863 {
6864 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6865 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
6866 },
6867 {
6868 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6869 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
6870 },
6871 {
6872 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6873 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
6874 },
6875 {
6876 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6877 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
6878 },
6879 {
6880 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6881 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
6882 },
6883 {
6884 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6885 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
6886 },
6887 {
6888 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6889 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
6890 },
6891 {
6892 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6893 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
6894 },
6895 {
6896 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6897 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
6898 },
6899 {
6900 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6901 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
6902 },
6903 {
6904 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6905 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
6906 },
6907 {
6908 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6909 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
6910 },
6911 {
6912 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6913 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
6914 },
6915 {
6916 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6917 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
6918 },
6919 {
6920 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6921 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
6922 },
6923 {
6924 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6925 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
6926 },
6927 {
6928 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6929 PCI_VENDOR_ID_ADAPTEC2, 0x1282)
6930 },
6931 {
6932 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6933 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
6934 },
6935 {
6936 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6937 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
6938 },
6939 {
6940 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6941 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
6942 },
6943 {
6944 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6945 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
6946 },
6947 {
6948 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6949 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
6950 },
6951 {
6952 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6953 PCI_VENDOR_ID_DELL, 0x1fe0)
6954 },
6955 {
6956 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6957 PCI_VENDOR_ID_HP, 0x0600)
6958 },
6959 {
6960 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6961 PCI_VENDOR_ID_HP, 0x0601)
6962 },
6963 {
6964 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6965 PCI_VENDOR_ID_HP, 0x0602)
6966 },
6967 {
6968 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6969 PCI_VENDOR_ID_HP, 0x0603)
6970 },
6971 {
6972 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6973 PCI_VENDOR_ID_HP, 0x0609)
6974 },
6975 {
6976 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6977 PCI_VENDOR_ID_HP, 0x0650)
6978 },
6979 {
6980 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6981 PCI_VENDOR_ID_HP, 0x0651)
6982 },
6983 {
6984 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6985 PCI_VENDOR_ID_HP, 0x0652)
6986 },
6987 {
6988 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6989 PCI_VENDOR_ID_HP, 0x0653)
6990 },
6991 {
6992 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6993 PCI_VENDOR_ID_HP, 0x0654)
6994 },
6995 {
6996 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6997 PCI_VENDOR_ID_HP, 0x0655)
6998 },
6999 {
7000 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7001 PCI_VENDOR_ID_HP, 0x0700)
7002 },
7003 {
7004 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7005 PCI_VENDOR_ID_HP, 0x0701)
7006 },
7007 {
7008 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7009 PCI_VENDOR_ID_HP, 0x1001)
7010 },
7011 {
7012 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7013 PCI_VENDOR_ID_HP, 0x1100)
7014 },
7015 {
7016 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7017 PCI_VENDOR_ID_HP, 0x1101)
7018 },
7019 {
7020 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7021 PCI_ANY_ID, PCI_ANY_ID)
7022 },
7023 { 0 }
7024 };
7025
7026 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
7027
7028 static struct pci_driver pqi_pci_driver = {
7029 .name = DRIVER_NAME_SHORT,
7030 .id_table = pqi_pci_id_table,
7031 .probe = pqi_pci_probe,
7032 .remove = pqi_pci_remove,
7033 .shutdown = pqi_shutdown,
7034 #if defined(CONFIG_PM)
7035 .suspend = pqi_suspend,
7036 .resume = pqi_resume,
7037 #endif
7038 };
7039
7040 static int __init pqi_init(void)
7041 {
7042 int rc;
7043
7044 pr_info(DRIVER_NAME "\n");
7045
7046 pqi_sas_transport_template =
7047 sas_attach_transport(&pqi_sas_transport_functions);
7048 if (!pqi_sas_transport_template)
7049 return -ENODEV;
7050
7051 pqi_process_module_params();
7052
7053 rc = pci_register_driver(&pqi_pci_driver);
7054 if (rc)
7055 sas_release_transport(pqi_sas_transport_template);
7056
7057 return rc;
7058 }
7059
7060 static void __exit pqi_cleanup(void)
7061 {
7062 pci_unregister_driver(&pqi_pci_driver);
7063 sas_release_transport(pqi_sas_transport_template);
7064 }
7065
7066 module_init(pqi_init);
7067 module_exit(pqi_cleanup);
7068
7069 static void __attribute__((unused)) verify_structures(void)
7070 {
7071 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7072 sis_host_to_ctrl_doorbell) != 0x20);
7073 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7074 sis_interrupt_mask) != 0x34);
7075 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7076 sis_ctrl_to_host_doorbell) != 0x9c);
7077 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7078 sis_ctrl_to_host_doorbell_clear) != 0xa0);
7079 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7080 sis_driver_scratch) != 0xb0);
7081 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7082 sis_firmware_status) != 0xbc);
7083 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7084 sis_mailbox) != 0x1000);
7085 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
7086 pqi_registers) != 0x4000);
7087
7088 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7089 iu_type) != 0x0);
7090 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7091 iu_length) != 0x2);
7092 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7093 response_queue_id) != 0x4);
7094 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
7095 work_area) != 0x6);
7096 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
7097
7098 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7099 status) != 0x0);
7100 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7101 service_response) != 0x1);
7102 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7103 data_present) != 0x2);
7104 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7105 reserved) != 0x3);
7106 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7107 residual_count) != 0x4);
7108 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7109 data_length) != 0x8);
7110 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7111 reserved1) != 0xa);
7112 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
7113 data) != 0xc);
7114 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
7115
7116 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7117 data_in_result) != 0x0);
7118 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7119 data_out_result) != 0x1);
7120 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7121 reserved) != 0x2);
7122 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7123 status) != 0x5);
7124 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7125 status_qualifier) != 0x6);
7126 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7127 sense_data_length) != 0x8);
7128 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7129 response_data_length) != 0xa);
7130 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7131 data_in_transferred) != 0xc);
7132 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7133 data_out_transferred) != 0x10);
7134 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
7135 data) != 0x14);
7136 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
7137
7138 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7139 signature) != 0x0);
7140 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7141 function_and_status_code) != 0x8);
7142 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7143 max_admin_iq_elements) != 0x10);
7144 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7145 max_admin_oq_elements) != 0x11);
7146 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7147 admin_iq_element_length) != 0x12);
7148 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7149 admin_oq_element_length) != 0x13);
7150 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7151 max_reset_timeout) != 0x14);
7152 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7153 legacy_intx_status) != 0x18);
7154 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7155 legacy_intx_mask_set) != 0x1c);
7156 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7157 legacy_intx_mask_clear) != 0x20);
7158 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7159 device_status) != 0x40);
7160 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7161 admin_iq_pi_offset) != 0x48);
7162 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7163 admin_oq_ci_offset) != 0x50);
7164 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7165 admin_iq_element_array_addr) != 0x58);
7166 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7167 admin_oq_element_array_addr) != 0x60);
7168 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7169 admin_iq_ci_addr) != 0x68);
7170 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7171 admin_oq_pi_addr) != 0x70);
7172 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7173 admin_iq_num_elements) != 0x78);
7174 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7175 admin_oq_num_elements) != 0x79);
7176 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7177 admin_queue_int_msg_num) != 0x7a);
7178 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7179 device_error) != 0x80);
7180 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7181 error_details) != 0x88);
7182 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7183 device_reset) != 0x90);
7184 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7185 power_action) != 0x94);
7186 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
7187
7188 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7189 header.iu_type) != 0);
7190 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7191 header.iu_length) != 2);
7192 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7193 header.work_area) != 6);
7194 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7195 request_id) != 8);
7196 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7197 function_code) != 10);
7198 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7199 data.report_device_capability.buffer_length) != 44);
7200 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7201 data.report_device_capability.sg_descriptor) != 48);
7202 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7203 data.create_operational_iq.queue_id) != 12);
7204 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7205 data.create_operational_iq.element_array_addr) != 16);
7206 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7207 data.create_operational_iq.ci_addr) != 24);
7208 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7209 data.create_operational_iq.num_elements) != 32);
7210 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7211 data.create_operational_iq.element_length) != 34);
7212 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7213 data.create_operational_iq.queue_protocol) != 36);
7214 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7215 data.create_operational_oq.queue_id) != 12);
7216 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7217 data.create_operational_oq.element_array_addr) != 16);
7218 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7219 data.create_operational_oq.pi_addr) != 24);
7220 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7221 data.create_operational_oq.num_elements) != 32);
7222 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7223 data.create_operational_oq.element_length) != 34);
7224 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7225 data.create_operational_oq.queue_protocol) != 36);
7226 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7227 data.create_operational_oq.int_msg_num) != 40);
7228 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7229 data.create_operational_oq.coalescing_count) != 42);
7230 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7231 data.create_operational_oq.min_coalescing_time) != 44);
7232 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7233 data.create_operational_oq.max_coalescing_time) != 48);
7234 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7235 data.delete_operational_queue.queue_id) != 12);
7236 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
7237 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7238 data.create_operational_iq) != 64 - 11);
7239 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7240 data.create_operational_oq) != 64 - 11);
7241 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7242 data.delete_operational_queue) != 64 - 11);
7243
7244 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7245 header.iu_type) != 0);
7246 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7247 header.iu_length) != 2);
7248 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7249 header.work_area) != 6);
7250 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7251 request_id) != 8);
7252 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7253 function_code) != 10);
7254 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7255 status) != 11);
7256 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7257 data.create_operational_iq.status_descriptor) != 12);
7258 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7259 data.create_operational_iq.iq_pi_offset) != 16);
7260 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7261 data.create_operational_oq.status_descriptor) != 12);
7262 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7263 data.create_operational_oq.oq_ci_offset) != 16);
7264 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
7265
7266 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7267 header.iu_type) != 0);
7268 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7269 header.iu_length) != 2);
7270 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7271 header.response_queue_id) != 4);
7272 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7273 header.work_area) != 6);
7274 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7275 request_id) != 8);
7276 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7277 nexus_id) != 10);
7278 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7279 buffer_length) != 12);
7280 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7281 lun_number) != 16);
7282 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7283 protocol_specific) != 24);
7284 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7285 error_index) != 27);
7286 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7287 cdb) != 32);
7288 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7289 sg_descriptors) != 64);
7290 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
7291 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
7292
7293 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7294 header.iu_type) != 0);
7295 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7296 header.iu_length) != 2);
7297 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7298 header.response_queue_id) != 4);
7299 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7300 header.work_area) != 6);
7301 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7302 request_id) != 8);
7303 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7304 nexus_id) != 12);
7305 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7306 buffer_length) != 16);
7307 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7308 data_encryption_key_index) != 22);
7309 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7310 encrypt_tweak_lower) != 24);
7311 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7312 encrypt_tweak_upper) != 28);
7313 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7314 cdb) != 32);
7315 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7316 error_index) != 48);
7317 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7318 num_sg_descriptors) != 50);
7319 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7320 cdb_length) != 51);
7321 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7322 lun_number) != 52);
7323 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7324 sg_descriptors) != 64);
7325 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
7326 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
7327
7328 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7329 header.iu_type) != 0);
7330 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7331 header.iu_length) != 2);
7332 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7333 request_id) != 8);
7334 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7335 error_index) != 10);
7336
7337 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7338 header.iu_type) != 0);
7339 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7340 header.iu_length) != 2);
7341 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7342 header.response_queue_id) != 4);
7343 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7344 request_id) != 8);
7345 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7346 data.report_event_configuration.buffer_length) != 12);
7347 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7348 data.report_event_configuration.sg_descriptors) != 16);
7349 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7350 data.set_event_configuration.global_event_oq_id) != 10);
7351 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7352 data.set_event_configuration.buffer_length) != 12);
7353 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7354 data.set_event_configuration.sg_descriptors) != 16);
7355
7356 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
7357 max_inbound_iu_length) != 6);
7358 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
7359 max_outbound_iu_length) != 14);
7360 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
7361
7362 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7363 data_length) != 0);
7364 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7365 iq_arbitration_priority_support_bitmask) != 8);
7366 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7367 maximum_aw_a) != 9);
7368 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7369 maximum_aw_b) != 10);
7370 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7371 maximum_aw_c) != 11);
7372 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7373 max_inbound_queues) != 16);
7374 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7375 max_elements_per_iq) != 18);
7376 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7377 max_iq_element_length) != 24);
7378 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7379 min_iq_element_length) != 26);
7380 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7381 max_outbound_queues) != 30);
7382 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7383 max_elements_per_oq) != 32);
7384 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7385 intr_coalescing_time_granularity) != 34);
7386 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7387 max_oq_element_length) != 36);
7388 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7389 min_oq_element_length) != 38);
7390 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7391 iu_layer_descriptors) != 64);
7392 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
7393
7394 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
7395 event_type) != 0);
7396 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
7397 oq_id) != 2);
7398 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
7399
7400 BUILD_BUG_ON(offsetof(struct pqi_event_config,
7401 num_event_descriptors) != 2);
7402 BUILD_BUG_ON(offsetof(struct pqi_event_config,
7403 descriptors) != 4);
7404
7405 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
7406 ARRAY_SIZE(pqi_supported_event_types));
7407
7408 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7409 header.iu_type) != 0);
7410 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7411 header.iu_length) != 2);
7412 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7413 event_type) != 8);
7414 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7415 event_id) != 10);
7416 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7417 additional_event_id) != 12);
7418 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7419 data) != 16);
7420 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
7421
7422 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7423 header.iu_type) != 0);
7424 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7425 header.iu_length) != 2);
7426 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7427 event_type) != 8);
7428 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7429 event_id) != 10);
7430 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7431 additional_event_id) != 12);
7432 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
7433
7434 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7435 header.iu_type) != 0);
7436 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7437 header.iu_length) != 2);
7438 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7439 request_id) != 8);
7440 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7441 nexus_id) != 10);
7442 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7443 lun_number) != 16);
7444 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7445 protocol_specific) != 24);
7446 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7447 outbound_queue_id_to_manage) != 26);
7448 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7449 request_id_to_manage) != 28);
7450 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7451 task_management_function) != 30);
7452 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
7453
7454 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7455 header.iu_type) != 0);
7456 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7457 header.iu_length) != 2);
7458 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7459 request_id) != 8);
7460 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7461 nexus_id) != 10);
7462 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7463 additional_response_info) != 12);
7464 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7465 response_code) != 15);
7466 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
7467
7468 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7469 configured_logical_drive_count) != 0);
7470 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7471 configuration_signature) != 1);
7472 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7473 firmware_version) != 5);
7474 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7475 extended_logical_unit_count) != 154);
7476 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7477 firmware_build_number) != 190);
7478 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7479 controller_mode) != 292);
7480
7481 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7482 phys_bay_in_box) != 115);
7483 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7484 device_type) != 120);
7485 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7486 redundant_path_present_map) != 1736);
7487 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7488 active_path_number) != 1738);
7489 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7490 alternate_paths_phys_connector) != 1739);
7491 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7492 alternate_paths_phys_box_on_port) != 1755);
7493 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7494 current_queue_depth_limit) != 1796);
7495 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
7496
7497 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
7498 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
7499 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
7500 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7501 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
7502 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7503 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
7504 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
7505 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7506 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
7507 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
7508 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7509
7510 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
7511 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
7512 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
7513 }
Linux with added FPC-III support