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scsi: smartpqi: update rescan worker
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / smartpqi / smartpqi_init.c
CommitLineData
6c223761
KB		 1/*
2 * driver for Microsemi PQI-based storage controllers
b805dbfe 3 * Copyright (c) 2016-2017 Microsemi Corporation
6c223761
KB		 4 * Copyright (c) 2016 PMC-Sierra, Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 *
15 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
16 *
17 */
18
19#include <linux/module.h>
20#include <linux/kernel.h>
21#include <linux/pci.h>
22#include <linux/delay.h>
23#include <linux/interrupt.h>
24#include <linux/sched.h>
25#include <linux/rtc.h>
26#include <linux/bcd.h>
3c50976f 27#include <linux/reboot.h>
6c223761 28#include <linux/cciss_ioctl.h>
52198226 29#include <linux/blk-mq-pci.h>
6c223761
KB		 30#include <scsi/scsi_host.h>
31#include <scsi/scsi_cmnd.h>
32#include <scsi/scsi_device.h>
33#include <scsi/scsi_eh.h>
34#include <scsi/scsi_transport_sas.h>
35#include <asm/unaligned.h>
36#include "smartpqi.h"
37#include "smartpqi_sis.h"
38
39#if !defined(BUILD_TIMESTAMP)
40#define BUILD_TIMESTAMP
41#endif
42
699bed75 43#define DRIVER_VERSION "0.9.13-370"
6c223761
KB		 44#define DRIVER_MAJOR 0
45#define DRIVER_MINOR 9
699bed75
KB		 46#define DRIVER_RELEASE 13
47#define DRIVER_REVISION 370
6c223761
KB		 48
49#define DRIVER_NAME "Microsemi PQI Driver (v" DRIVER_VERSION ")"
50#define DRIVER_NAME_SHORT "smartpqi"
51
e1d213bd
KB		 52#define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor))
53
6c223761
KB		 54MODULE_AUTHOR("Microsemi");
55MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version "
56 DRIVER_VERSION);
57MODULE_SUPPORTED_DEVICE("Microsemi Smart Family Controllers");
58MODULE_VERSION(DRIVER_VERSION);
59MODULE_LICENSE("GPL");
60
6c223761
KB		 61static char *hpe_branded_controller = "HPE Smart Array Controller";
62static char *microsemi_branded_controller = "Microsemi Smart Family Controller";
63
64static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info);
5f310425 65static void pqi_ctrl_offline_worker(struct work_struct *work);
376fb880 66static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info);
6c223761
KB		 67static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
68static void pqi_scan_start(struct Scsi_Host *shost);
69static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
70 struct pqi_queue_group *queue_group, enum pqi_io_path path,
71 struct pqi_io_request *io_request);
72static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
73 struct pqi_iu_header *request, unsigned int flags,
74 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs);
75static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
76 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
77 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 78 struct pqi_encryption_info *encryption_info, bool raid_bypass);
6c223761
KB		 79
80/* for flags argument to pqi_submit_raid_request_synchronous() */
81#define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
82
83static struct scsi_transport_template *pqi_sas_transport_template;
84
85static atomic_t pqi_controller_count = ATOMIC_INIT(0);
86
3c50976f
KB		 87enum pqi_lockup_action {
88 NONE,
89 REBOOT,
90 PANIC
91};
92
93static enum pqi_lockup_action pqi_lockup_action = NONE;
94
95static struct {
96 enum pqi_lockup_action action;
97 char *name;
98} pqi_lockup_actions[] = {
99 {
100 .action = NONE,
101 .name = "none",
102 },
103 {
104 .action = REBOOT,
105 .name = "reboot",
106 },
107 {
108 .action = PANIC,
109 .name = "panic",
110 },
111};
112
6a50d6ad
KB		 113static unsigned int pqi_supported_event_types[] = {
114 PQI_EVENT_TYPE_HOTPLUG,
115 PQI_EVENT_TYPE_HARDWARE,
116 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
117 PQI_EVENT_TYPE_LOGICAL_DEVICE,
118 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
119 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
120};
121
6c223761
KB		 122static int pqi_disable_device_id_wildcards;
123module_param_named(disable_device_id_wildcards,
cbe0c7b1 124 pqi_disable_device_id_wildcards, int, 0644);
6c223761
KB		 125MODULE_PARM_DESC(disable_device_id_wildcards,
126 "Disable device ID wildcards.");
127
3c50976f
KB		 128static char *pqi_lockup_action_param;
129module_param_named(lockup_action,
130 pqi_lockup_action_param, charp, 0644);
131MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
132 "\t\tSupported: none, reboot, panic\n"
133 "\t\tDefault: none");
134
6c223761
KB		 135static char *raid_levels[] = {
136 "RAID-0",
137 "RAID-4",
138 "RAID-1(1+0)",
139 "RAID-5",
140 "RAID-5+1",
141 "RAID-ADG",
142 "RAID-1(ADM)",
143};
144
145static char *pqi_raid_level_to_string(u8 raid_level)
146{
147 if (raid_level < ARRAY_SIZE(raid_levels))
148 return raid_levels[raid_level];
149
150 return "";
151}
152
153#define SA_RAID_0 0
154#define SA_RAID_4 1
155#define SA_RAID_1 2 /* also used for RAID 10 */
156#define SA_RAID_5 3 /* also used for RAID 50 */
157#define SA_RAID_51 4
158#define SA_RAID_6 5 /* also used for RAID 60 */
159#define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
160#define SA_RAID_MAX SA_RAID_ADM
161#define SA_RAID_UNKNOWN 0xff
162
163static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
164{
7561a7e4 165 pqi_prep_for_scsi_done(scmd);
6c223761
KB		 166 scmd->scsi_done(scmd);
167}
168
169static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
170{
171 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
172}
173
174static inline struct pqi_ctrl_info *shost_to_hba(struct Scsi_Host *shost)
175{
176 void *hostdata = shost_priv(shost);
177
178 return *((struct pqi_ctrl_info **)hostdata);
179}
180
181static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
182{
183 return !device->is_physical_device;
184}
185
bd10cf0b
KB		 186static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
187{
188 return scsi3addr[2] != 0;
189}
190
6c223761
KB		 191static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
192{
193 return !ctrl_info->controller_online;
194}
195
196static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
197{
198 if (ctrl_info->controller_online)
199 if (!sis_is_firmware_running(ctrl_info))
200 pqi_take_ctrl_offline(ctrl_info);
201}
202
203static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
204{
205 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
206}
207
ff6abb73
KB		 208static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
209 struct pqi_ctrl_info *ctrl_info)
210{
211 return sis_read_driver_scratch(ctrl_info);
212}
213
214static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
215 enum pqi_ctrl_mode mode)
216{
217 sis_write_driver_scratch(ctrl_info, mode);
218}
219
7561a7e4
KB		 220static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
221{
222 ctrl_info->block_requests = true;
223 scsi_block_requests(ctrl_info->scsi_host);
224}
225
226static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
227{
228 ctrl_info->block_requests = false;
229 wake_up_all(&ctrl_info->block_requests_wait);
376fb880 230 pqi_retry_raid_bypass_requests(ctrl_info);
7561a7e4
KB		 231 scsi_unblock_requests(ctrl_info->scsi_host);
232}
233
234static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
235{
236 return ctrl_info->block_requests;
237}
238
239static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
240 unsigned long timeout_msecs)
241{
242 unsigned long remaining_msecs;
243
244 if (!pqi_ctrl_blocked(ctrl_info))
245 return timeout_msecs;
246
247 atomic_inc(&ctrl_info->num_blocked_threads);
248
249 if (timeout_msecs == NO_TIMEOUT) {
250 wait_event(ctrl_info->block_requests_wait,
251 !pqi_ctrl_blocked(ctrl_info));
252 remaining_msecs = timeout_msecs;
253 } else {
254 unsigned long remaining_jiffies;
255
256 remaining_jiffies =
257 wait_event_timeout(ctrl_info->block_requests_wait,
258 !pqi_ctrl_blocked(ctrl_info),
259 msecs_to_jiffies(timeout_msecs));
260 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
261 }
262
263 atomic_dec(&ctrl_info->num_blocked_threads);
264
265 return remaining_msecs;
266}
267
268static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info)
269{
270 atomic_inc(&ctrl_info->num_busy_threads);
271}
272
273static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info)
274{
275 atomic_dec(&ctrl_info->num_busy_threads);
276}
277
278static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
279{
280 while (atomic_read(&ctrl_info->num_busy_threads) >
281 atomic_read(&ctrl_info->num_blocked_threads))
282 usleep_range(1000, 2000);
283}
284
03b288cf
KB		 285static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
286{
287 return device->device_offline;
288}
289
7561a7e4
KB		 290static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
291{
292 device->in_reset = true;
293}
294
295static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
296{
297 device->in_reset = false;
298}
299
300static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
301{
302 return device->in_reset;
303}
6c223761 304
5f310425
KB		 305static inline void pqi_schedule_rescan_worker_with_delay(
306 struct pqi_ctrl_info *ctrl_info, unsigned long delay)
307{
308 if (pqi_ctrl_offline(ctrl_info))
309 return;
310
311 schedule_delayed_work(&ctrl_info->rescan_work, delay);
312}
313
6c223761
KB		 314static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
315{
5f310425
KB		 316 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
317}
318
319#define PQI_RESCAN_WORK_DELAY (10 * HZ)
320
321static inline void pqi_schedule_rescan_worker_delayed(
322 struct pqi_ctrl_info *ctrl_info)
323{
324 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
6c223761
KB		 325}
326
061ef06a
KB		 327static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
328{
329 cancel_delayed_work_sync(&ctrl_info->rescan_work);
330}
331
98f87667
KB		 332static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
333{
334 if (!ctrl_info->heartbeat_counter)
335 return 0;
336
337 return readl(ctrl_info->heartbeat_counter);
338}
339
6c223761
KB		 340static int pqi_map_single(struct pci_dev *pci_dev,
341 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
342 size_t buffer_length, int data_direction)
343{
344 dma_addr_t bus_address;
345
346 if (!buffer || buffer_length == 0 || data_direction == PCI_DMA_NONE)
347 return 0;
348
349 bus_address = pci_map_single(pci_dev, buffer, buffer_length,
350 data_direction);
351 if (pci_dma_mapping_error(pci_dev, bus_address))
352 return -ENOMEM;
353
354 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
355 put_unaligned_le32(buffer_length, &sg_descriptor->length);
356 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
357
358 return 0;
359}
360
361static void pqi_pci_unmap(struct pci_dev *pci_dev,
362 struct pqi_sg_descriptor *descriptors, int num_descriptors,
363 int data_direction)
364{
365 int i;
366
367 if (data_direction == PCI_DMA_NONE)
368 return;
369
370 for (i = 0; i < num_descriptors; i++)
371 pci_unmap_single(pci_dev,
372 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
373 get_unaligned_le32(&descriptors[i].length),
374 data_direction);
375}
376
377static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
378 struct pqi_raid_path_request *request, u8 cmd,
379 u8 *scsi3addr, void *buffer, size_t buffer_length,
380 u16 vpd_page, int *pci_direction)
381{
382 u8 *cdb;
383 int pci_dir;
384
385 memset(request, 0, sizeof(*request));
386
387 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
388 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
389 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
390 &request->header.iu_length);
391 put_unaligned_le32(buffer_length, &request->buffer_length);
392 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
393 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
394 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
395
396 cdb = request->cdb;
397
398 switch (cmd) {
399 case INQUIRY:
400 request->data_direction = SOP_READ_FLAG;
401 cdb[0] = INQUIRY;
402 if (vpd_page & VPD_PAGE) {
403 cdb[1] = 0x1;
404 cdb[2] = (u8)vpd_page;
405 }
406 cdb[4] = (u8)buffer_length;
407 break;
408 case CISS_REPORT_LOG:
409 case CISS_REPORT_PHYS:
410 request->data_direction = SOP_READ_FLAG;
411 cdb[0] = cmd;
412 if (cmd == CISS_REPORT_PHYS)
413 cdb[1] = CISS_REPORT_PHYS_EXTENDED;
414 else
415 cdb[1] = CISS_REPORT_LOG_EXTENDED;
416 put_unaligned_be32(buffer_length, &cdb[6]);
417 break;
418 case CISS_GET_RAID_MAP:
419 request->data_direction = SOP_READ_FLAG;
420 cdb[0] = CISS_READ;
421 cdb[1] = CISS_GET_RAID_MAP;
422 put_unaligned_be32(buffer_length, &cdb[6]);
423 break;
424 case SA_CACHE_FLUSH:
425 request->data_direction = SOP_WRITE_FLAG;
426 cdb[0] = BMIC_WRITE;
427 cdb[6] = BMIC_CACHE_FLUSH;
428 put_unaligned_be16(buffer_length, &cdb[7]);
429 break;
430 case BMIC_IDENTIFY_CONTROLLER:
431 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
432 request->data_direction = SOP_READ_FLAG;
433 cdb[0] = BMIC_READ;
434 cdb[6] = cmd;
435 put_unaligned_be16(buffer_length, &cdb[7]);
436 break;
437 case BMIC_WRITE_HOST_WELLNESS:
438 request->data_direction = SOP_WRITE_FLAG;
439 cdb[0] = BMIC_WRITE;
440 cdb[6] = cmd;
441 put_unaligned_be16(buffer_length, &cdb[7]);
442 break;
443 default:
444 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n",
445 cmd);
6c223761
KB		 446 break;
447 }
448
449 switch (request->data_direction) {
450 case SOP_READ_FLAG:
451 pci_dir = PCI_DMA_FROMDEVICE;
452 break;
453 case SOP_WRITE_FLAG:
454 pci_dir = PCI_DMA_TODEVICE;
455 break;
456 case SOP_NO_DIRECTION_FLAG:
457 pci_dir = PCI_DMA_NONE;
458 break;
459 default:
460 pci_dir = PCI_DMA_BIDIRECTIONAL;
461 break;
462 }
463
464 *pci_direction = pci_dir;
465
466 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
467 buffer, buffer_length, pci_dir);
468}
469
376fb880
KB		 470static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
471{
472 io_request->scmd = NULL;
473 io_request->status = 0;
474 io_request->error_info = NULL;
475 io_request->raid_bypass = false;
476}
477
6c223761
KB		 478static struct pqi_io_request *pqi_alloc_io_request(
479 struct pqi_ctrl_info *ctrl_info)
480{
481 struct pqi_io_request *io_request;
482 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
483
484 while (1) {
485 io_request = &ctrl_info->io_request_pool[i];
486 if (atomic_inc_return(&io_request->refcount) == 1)
487 break;
488 atomic_dec(&io_request->refcount);
489 i = (i + 1) % ctrl_info->max_io_slots;
490 }
491
492 /* benignly racy */
493 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
494
376fb880 495 pqi_reinit_io_request(io_request);
6c223761
KB		 496
497 return io_request;
498}
499
500static void pqi_free_io_request(struct pqi_io_request *io_request)
501{
502 atomic_dec(&io_request->refcount);
503}
504
505static int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
506 struct bmic_identify_controller *buffer)
507{
508 int rc;
509 int pci_direction;
510 struct pqi_raid_path_request request;
511
512 rc = pqi_build_raid_path_request(ctrl_info, &request,
513 BMIC_IDENTIFY_CONTROLLER, RAID_CTLR_LUNID, buffer,
514 sizeof(*buffer), 0, &pci_direction);
515 if (rc)
516 return rc;
517
518 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
519 NULL, NO_TIMEOUT);
520
521 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
522 pci_direction);
523
524 return rc;
525}
526
527static int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
528 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
529{
530 int rc;
531 int pci_direction;
532 struct pqi_raid_path_request request;
533
534 rc = pqi_build_raid_path_request(ctrl_info, &request,
535 INQUIRY, scsi3addr, buffer, buffer_length, vpd_page,
536 &pci_direction);
537 if (rc)
538 return rc;
539
540 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
541 NULL, NO_TIMEOUT);
542
543 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
544 pci_direction);
545
546 return rc;
547}
548
549static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
550 struct pqi_scsi_dev *device,
551 struct bmic_identify_physical_device *buffer,
552 size_t buffer_length)
553{
554 int rc;
555 int pci_direction;
556 u16 bmic_device_index;
557 struct pqi_raid_path_request request;
558
559 rc = pqi_build_raid_path_request(ctrl_info, &request,
560 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
561 buffer_length, 0, &pci_direction);
562 if (rc)
563 return rc;
564
565 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
566 request.cdb[2] = (u8)bmic_device_index;
567 request.cdb[9] = (u8)(bmic_device_index >> 8);
568
569 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
570 0, NULL, NO_TIMEOUT);
571
572 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
573 pci_direction);
574
575 return rc;
576}
577
578#define SA_CACHE_FLUSH_BUFFER_LENGTH 4
6c223761
KB		 579
580static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info)
581{
582 int rc;
583 struct pqi_raid_path_request request;
584 int pci_direction;
585 u8 *buffer;
586
587 /*
588 * Don't bother trying to flush the cache if the controller is
589 * locked up.
590 */
591 if (pqi_ctrl_offline(ctrl_info))
592 return -ENXIO;
593
594 buffer = kzalloc(SA_CACHE_FLUSH_BUFFER_LENGTH, GFP_KERNEL);
595 if (!buffer)
596 return -ENOMEM;
597
598 rc = pqi_build_raid_path_request(ctrl_info, &request,
599 SA_CACHE_FLUSH, RAID_CTLR_LUNID, buffer,
600 SA_CACHE_FLUSH_BUFFER_LENGTH, 0, &pci_direction);
601 if (rc)
602 goto out;
603
604 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
d48f8fad 605 0, NULL, NO_TIMEOUT);
6c223761
KB		 606
607 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
608 pci_direction);
609
610out:
611 kfree(buffer);
612
613 return rc;
614}
615
616static int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
617 void *buffer, size_t buffer_length)
618{
619 int rc;
620 struct pqi_raid_path_request request;
621 int pci_direction;
622
623 rc = pqi_build_raid_path_request(ctrl_info, &request,
624 BMIC_WRITE_HOST_WELLNESS, RAID_CTLR_LUNID, buffer,
625 buffer_length, 0, &pci_direction);
626 if (rc)
627 return rc;
628
629 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
630 0, NULL, NO_TIMEOUT);
631
632 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
633 pci_direction);
634
635 return rc;
636}
637
638#pragma pack(1)
639
640struct bmic_host_wellness_driver_version {
641 u8 start_tag[4];
642 u8 driver_version_tag[2];
643 __le16 driver_version_length;
644 char driver_version[32];
645 u8 end_tag[2];
646};
647
648#pragma pack()
649
650static int pqi_write_driver_version_to_host_wellness(
651 struct pqi_ctrl_info *ctrl_info)
652{
653 int rc;
654 struct bmic_host_wellness_driver_version *buffer;
655 size_t buffer_length;
656
657 buffer_length = sizeof(*buffer);
658
659 buffer = kmalloc(buffer_length, GFP_KERNEL);
660 if (!buffer)
661 return -ENOMEM;
662
663 buffer->start_tag[0] = '<';
664 buffer->start_tag[1] = 'H';
665 buffer->start_tag[2] = 'W';
666 buffer->start_tag[3] = '>';
667 buffer->driver_version_tag[0] = 'D';
668 buffer->driver_version_tag[1] = 'V';
669 put_unaligned_le16(sizeof(buffer->driver_version),
670 &buffer->driver_version_length);
061ef06a 671 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
6c223761
KB		 672 sizeof(buffer->driver_version) - 1);
673 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
674 buffer->end_tag[0] = 'Z';
675 buffer->end_tag[1] = 'Z';
676
677 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
678
679 kfree(buffer);
680
681 return rc;
682}
683
684#pragma pack(1)
685
686struct bmic_host_wellness_time {
687 u8 start_tag[4];
688 u8 time_tag[2];
689 __le16 time_length;
690 u8 time[8];
691 u8 dont_write_tag[2];
692 u8 end_tag[2];
693};
694
695#pragma pack()
696
697static int pqi_write_current_time_to_host_wellness(
698 struct pqi_ctrl_info *ctrl_info)
699{
700 int rc;
701 struct bmic_host_wellness_time *buffer;
702 size_t buffer_length;
703 time64_t local_time;
704 unsigned int year;
ed10858e 705 struct tm tm;
6c223761
KB		 706
707 buffer_length = sizeof(*buffer);
708
709 buffer = kmalloc(buffer_length, GFP_KERNEL);
710 if (!buffer)
711 return -ENOMEM;
712
713 buffer->start_tag[0] = '<';
714 buffer->start_tag[1] = 'H';
715 buffer->start_tag[2] = 'W';
716 buffer->start_tag[3] = '>';
717 buffer->time_tag[0] = 'T';
718 buffer->time_tag[1] = 'D';
719 put_unaligned_le16(sizeof(buffer->time),
720 &buffer->time_length);
721
ed10858e
AB		 722 local_time = ktime_get_real_seconds();
723 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
6c223761
KB		 724 year = tm.tm_year + 1900;
725
726 buffer->time[0] = bin2bcd(tm.tm_hour);
727 buffer->time[1] = bin2bcd(tm.tm_min);
728 buffer->time[2] = bin2bcd(tm.tm_sec);
729 buffer->time[3] = 0;
730 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
731 buffer->time[5] = bin2bcd(tm.tm_mday);
732 buffer->time[6] = bin2bcd(year / 100);
733 buffer->time[7] = bin2bcd(year % 100);
734
735 buffer->dont_write_tag[0] = 'D';
736 buffer->dont_write_tag[1] = 'W';
737 buffer->end_tag[0] = 'Z';
738 buffer->end_tag[1] = 'Z';
739
740 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
741
742 kfree(buffer);
743
744 return rc;
745}
746
747#define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * HZ)
748
749static void pqi_update_time_worker(struct work_struct *work)
750{
751 int rc;
752 struct pqi_ctrl_info *ctrl_info;
753
754 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
755 update_time_work);
756
5f310425
KB		 757 if (pqi_ctrl_offline(ctrl_info))
758 return;
759
6c223761
KB		 760 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
761 if (rc)
762 dev_warn(&ctrl_info->pci_dev->dev,
763 "error updating time on controller\n");
764
765 schedule_delayed_work(&ctrl_info->update_time_work,
766 PQI_UPDATE_TIME_WORK_INTERVAL);
767}
768
769static inline void pqi_schedule_update_time_worker(
4fbebf1a 770 struct pqi_ctrl_info *ctrl_info)
6c223761 771{
4fbebf1a 772 schedule_delayed_work(&ctrl_info->update_time_work, 0);
061ef06a
KB		 773}
774
775static inline void pqi_cancel_update_time_worker(
776 struct pqi_ctrl_info *ctrl_info)
777{
061ef06a 778 cancel_delayed_work_sync(&ctrl_info->update_time_work);
6c223761
KB		 779}
780
781static int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
782 void *buffer, size_t buffer_length)
783{
784 int rc;
785 int pci_direction;
786 struct pqi_raid_path_request request;
787
788 rc = pqi_build_raid_path_request(ctrl_info, &request,
789 cmd, RAID_CTLR_LUNID, buffer, buffer_length, 0, &pci_direction);
790 if (rc)
791 return rc;
792
793 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
794 NULL, NO_TIMEOUT);
795
796 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
797 pci_direction);
798
799 return rc;
800}
801
802static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
803 void **buffer)
804{
805 int rc;
806 size_t lun_list_length;
807 size_t lun_data_length;
808 size_t new_lun_list_length;
809 void *lun_data = NULL;
810 struct report_lun_header *report_lun_header;
811
812 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
813 if (!report_lun_header) {
814 rc = -ENOMEM;
815 goto out;
816 }
817
818 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header,
819 sizeof(*report_lun_header));
820 if (rc)
821 goto out;
822
823 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
824
825again:
826 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
827
828 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
829 if (!lun_data) {
830 rc = -ENOMEM;
831 goto out;
832 }
833
834 if (lun_list_length == 0) {
835 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
836 goto out;
837 }
838
839 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
840 if (rc)
841 goto out;
842
843 new_lun_list_length = get_unaligned_be32(
844 &((struct report_lun_header *)lun_data)->list_length);
845
846 if (new_lun_list_length > lun_list_length) {
847 lun_list_length = new_lun_list_length;
848 kfree(lun_data);
849 goto again;
850 }
851
852out:
853 kfree(report_lun_header);
854
855 if (rc) {
856 kfree(lun_data);
857 lun_data = NULL;
858 }
859
860 *buffer = lun_data;
861
862 return rc;
863}
864
865static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info,
866 void **buffer)
867{
868 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS,
869 buffer);
870}
871
872static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info,
873 void **buffer)
874{
875 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
876}
877
878static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
879 struct report_phys_lun_extended **physdev_list,
880 struct report_log_lun_extended **logdev_list)
881{
882 int rc;
883 size_t logdev_list_length;
884 size_t logdev_data_length;
885 struct report_log_lun_extended *internal_logdev_list;
886 struct report_log_lun_extended *logdev_data;
887 struct report_lun_header report_lun_header;
888
889 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
890 if (rc)
891 dev_err(&ctrl_info->pci_dev->dev,
892 "report physical LUNs failed\n");
893
894 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
895 if (rc)
896 dev_err(&ctrl_info->pci_dev->dev,
897 "report logical LUNs failed\n");
898
899 /*
900 * Tack the controller itself onto the end of the logical device list.
901 */
902
903 logdev_data = *logdev_list;
904
905 if (logdev_data) {
906 logdev_list_length =
907 get_unaligned_be32(&logdev_data->header.list_length);
908 } else {
909 memset(&report_lun_header, 0, sizeof(report_lun_header));
910 logdev_data =
911 (struct report_log_lun_extended *)&report_lun_header;
912 logdev_list_length = 0;
913 }
914
915 logdev_data_length = sizeof(struct report_lun_header) +
916 logdev_list_length;
917
918 internal_logdev_list = kmalloc(logdev_data_length +
919 sizeof(struct report_log_lun_extended), GFP_KERNEL);
920 if (!internal_logdev_list) {
921 kfree(*logdev_list);
922 *logdev_list = NULL;
923 return -ENOMEM;
924 }
925
926 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
927 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
928 sizeof(struct report_log_lun_extended_entry));
929 put_unaligned_be32(logdev_list_length +
930 sizeof(struct report_log_lun_extended_entry),
931 &internal_logdev_list->header.list_length);
932
933 kfree(*logdev_list);
934 *logdev_list = internal_logdev_list;
935
936 return 0;
937}
938
939static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
940 int bus, int target, int lun)
941{
942 device->bus = bus;
943 device->target = target;
944 device->lun = lun;
945}
946
947static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
948{
949 u8 *scsi3addr;
950 u32 lunid;
bd10cf0b
KB		 951 int bus;
952 int target;
953 int lun;
6c223761
KB		 954
955 scsi3addr = device->scsi3addr;
956 lunid = get_unaligned_le32(scsi3addr);
957
958 if (pqi_is_hba_lunid(scsi3addr)) {
959 /* The specified device is the controller. */
960 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
961 device->target_lun_valid = true;
962 return;
963 }
964
965 if (pqi_is_logical_device(device)) {
bd10cf0b
KB		 966 if (device->is_external_raid_device) {
967 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
968 target = (lunid >> 16) & 0x3fff;
969 lun = lunid & 0xff;
970 } else {
971 bus = PQI_RAID_VOLUME_BUS;
972 target = 0;
973 lun = lunid & 0x3fff;
974 }
975 pqi_set_bus_target_lun(device, bus, target, lun);
6c223761
KB		 976 device->target_lun_valid = true;
977 return;
978 }
979
980 /*
981 * Defer target and LUN assignment for non-controller physical devices
982 * because the SAS transport layer will make these assignments later.
983 */
984 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
985}
986
987static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
988 struct pqi_scsi_dev *device)
989{
990 int rc;
991 u8 raid_level;
992 u8 *buffer;
993
994 raid_level = SA_RAID_UNKNOWN;
995
996 buffer = kmalloc(64, GFP_KERNEL);
997 if (buffer) {
998 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
999 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1000 if (rc == 0) {
1001 raid_level = buffer[8];
1002 if (raid_level > SA_RAID_MAX)
1003 raid_level = SA_RAID_UNKNOWN;
1004 }
1005 kfree(buffer);
1006 }
1007
1008 device->raid_level = raid_level;
1009}
1010
1011static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1012 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1013{
1014 char *err_msg;
1015 u32 raid_map_size;
1016 u32 r5or6_blocks_per_row;
1017 unsigned int num_phys_disks;
1018 unsigned int num_raid_map_entries;
1019
1020 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1021
1022 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1023 err_msg = "RAID map too small";
1024 goto bad_raid_map;
1025 }
1026
1027 if (raid_map_size > sizeof(*raid_map)) {
1028 err_msg = "RAID map too large";
1029 goto bad_raid_map;
1030 }
1031
1032 num_phys_disks = get_unaligned_le16(&raid_map->layout_map_count) *
1033 (get_unaligned_le16(&raid_map->data_disks_per_row) +
1034 get_unaligned_le16(&raid_map->metadata_disks_per_row));
1035 num_raid_map_entries = num_phys_disks *
1036 get_unaligned_le16(&raid_map->row_cnt);
1037
1038 if (num_raid_map_entries > RAID_MAP_MAX_ENTRIES) {
1039 err_msg = "invalid number of map entries in RAID map";
1040 goto bad_raid_map;
1041 }
1042
1043 if (device->raid_level == SA_RAID_1) {
1044 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1045 err_msg = "invalid RAID-1 map";
1046 goto bad_raid_map;
1047 }
1048 } else if (device->raid_level == SA_RAID_ADM) {
1049 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1050 err_msg = "invalid RAID-1(ADM) map";
1051 goto bad_raid_map;
1052 }
1053 } else if ((device->raid_level == SA_RAID_5 ||
1054 device->raid_level == SA_RAID_6) &&
1055 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1056 /* RAID 50/60 */
1057 r5or6_blocks_per_row =
1058 get_unaligned_le16(&raid_map->strip_size) *
1059 get_unaligned_le16(&raid_map->data_disks_per_row);
1060 if (r5or6_blocks_per_row == 0) {
1061 err_msg = "invalid RAID-5 or RAID-6 map";
1062 goto bad_raid_map;
1063 }
1064 }
1065
1066 return 0;
1067
1068bad_raid_map:
d87d5474
KB		 1069 dev_warn(&ctrl_info->pci_dev->dev,
1070 "scsi %d:%d:%d:%d %s\n",
1071 ctrl_info->scsi_host->host_no,
1072 device->bus, device->target, device->lun, err_msg);
6c223761
KB		 1073
1074 return -EINVAL;
1075}
1076
1077static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1078 struct pqi_scsi_dev *device)
1079{
1080 int rc;
1081 int pci_direction;
1082 struct pqi_raid_path_request request;
1083 struct raid_map *raid_map;
1084
1085 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1086 if (!raid_map)
1087 return -ENOMEM;
1088
1089 rc = pqi_build_raid_path_request(ctrl_info, &request,
1090 CISS_GET_RAID_MAP, device->scsi3addr, raid_map,
1091 sizeof(*raid_map), 0, &pci_direction);
1092 if (rc)
1093 goto error;
1094
1095 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
1096 NULL, NO_TIMEOUT);
1097
1098 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
1099 pci_direction);
1100
1101 if (rc)
1102 goto error;
1103
1104 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1105 if (rc)
1106 goto error;
1107
1108 device->raid_map = raid_map;
1109
1110 return 0;
1111
1112error:
1113 kfree(raid_map);
1114
1115 return rc;
1116}
1117
1118static void pqi_get_offload_status(struct pqi_ctrl_info *ctrl_info,
1119 struct pqi_scsi_dev *device)
1120{
1121 int rc;
1122 u8 *buffer;
1123 u8 offload_status;
1124
1125 buffer = kmalloc(64, GFP_KERNEL);
1126 if (!buffer)
1127 return;
1128
1129 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1130 VPD_PAGE | CISS_VPD_LV_OFFLOAD_STATUS, buffer, 64);
1131 if (rc)
1132 goto out;
1133
1134#define OFFLOAD_STATUS_BYTE 4
1135#define OFFLOAD_CONFIGURED_BIT 0x1
1136#define OFFLOAD_ENABLED_BIT 0x2
1137
1138 offload_status = buffer[OFFLOAD_STATUS_BYTE];
1139 device->offload_configured =
1140 !!(offload_status & OFFLOAD_CONFIGURED_BIT);
1141 if (device->offload_configured) {
1142 device->offload_enabled_pending =
1143 !!(offload_status & OFFLOAD_ENABLED_BIT);
1144 if (pqi_get_raid_map(ctrl_info, device))
1145 device->offload_enabled_pending = false;
1146 }
1147
1148out:
1149 kfree(buffer);
1150}
1151
1152/*
1153 * Use vendor-specific VPD to determine online/offline status of a volume.
1154 */
1155
1156static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1157 struct pqi_scsi_dev *device)
1158{
1159 int rc;
1160 size_t page_length;
1161 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1162 bool volume_offline = true;
1163 u32 volume_flags;
1164 struct ciss_vpd_logical_volume_status *vpd;
1165
1166 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1167 if (!vpd)
1168 goto no_buffer;
1169
1170 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1171 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1172 if (rc)
1173 goto out;
1174
1175 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1176 volume_status) + vpd->page_length;
1177 if (page_length < sizeof(*vpd))
1178 goto out;
1179
1180 volume_status = vpd->volume_status;
1181 volume_flags = get_unaligned_be32(&vpd->flags);
1182 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1183
1184out:
1185 kfree(vpd);
1186no_buffer:
1187 device->volume_status = volume_status;
1188 device->volume_offline = volume_offline;
1189}
1190
1191static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
1192 struct pqi_scsi_dev *device)
1193{
1194 int rc;
1195 u8 *buffer;
1196
1197 buffer = kmalloc(64, GFP_KERNEL);
1198 if (!buffer)
1199 return -ENOMEM;
1200
1201 /* Send an inquiry to the device to see what it is. */
1202 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64);
1203 if (rc)
1204 goto out;
1205
1206 scsi_sanitize_inquiry_string(&buffer[8], 8);
1207 scsi_sanitize_inquiry_string(&buffer[16], 16);
1208
1209 device->devtype = buffer[0] & 0x1f;
cbe0c7b1
KB		 1210 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1211 memcpy(device->model, &buffer[16], sizeof(device->model));
6c223761
KB		 1212
1213 if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK) {
bd10cf0b
KB		 1214 if (device->is_external_raid_device) {
1215 device->raid_level = SA_RAID_UNKNOWN;
1216 device->volume_status = CISS_LV_OK;
1217 device->volume_offline = false;
1218 } else {
1219 pqi_get_raid_level(ctrl_info, device);
1220 pqi_get_offload_status(ctrl_info, device);
1221 pqi_get_volume_status(ctrl_info, device);
1222 }
6c223761
KB		 1223 }
1224
1225out:
1226 kfree(buffer);
1227
1228 return rc;
1229}
1230
1231static void pqi_get_physical_disk_info(struct pqi_ctrl_info *ctrl_info,
1232 struct pqi_scsi_dev *device,
1233 struct bmic_identify_physical_device *id_phys)
1234{
1235 int rc;
1236
1237 memset(id_phys, 0, sizeof(*id_phys));
1238
1239 rc = pqi_identify_physical_device(ctrl_info, device,
1240 id_phys, sizeof(*id_phys));
1241 if (rc) {
1242 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1243 return;
1244 }
1245
1246 device->queue_depth =
1247 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1248 device->device_type = id_phys->device_type;
1249 device->active_path_index = id_phys->active_path_number;
1250 device->path_map = id_phys->redundant_path_present_map;
1251 memcpy(&device->box,
1252 &id_phys->alternate_paths_phys_box_on_port,
1253 sizeof(device->box));
1254 memcpy(&device->phys_connector,
1255 &id_phys->alternate_paths_phys_connector,
1256 sizeof(device->phys_connector));
1257 device->bay = id_phys->phys_bay_in_box;
1258}
1259
1260static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1261 struct pqi_scsi_dev *device)
1262{
1263 char *status;
1264 static const char unknown_state_str[] =
1265 "Volume is in an unknown state (%u)";
1266 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1267
1268 switch (device->volume_status) {
1269 case CISS_LV_OK:
1270 status = "Volume online";
1271 break;
1272 case CISS_LV_FAILED:
1273 status = "Volume failed";
1274 break;
1275 case CISS_LV_NOT_CONFIGURED:
1276 status = "Volume not configured";
1277 break;
1278 case CISS_LV_DEGRADED:
1279 status = "Volume degraded";
1280 break;
1281 case CISS_LV_READY_FOR_RECOVERY:
1282 status = "Volume ready for recovery operation";
1283 break;
1284 case CISS_LV_UNDERGOING_RECOVERY:
1285 status = "Volume undergoing recovery";
1286 break;
1287 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1288 status = "Wrong physical drive was replaced";
1289 break;
1290 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1291 status = "A physical drive not properly connected";
1292 break;
1293 case CISS_LV_HARDWARE_OVERHEATING:
1294 status = "Hardware is overheating";
1295 break;
1296 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1297 status = "Hardware has overheated";
1298 break;
1299 case CISS_LV_UNDERGOING_EXPANSION:
1300 status = "Volume undergoing expansion";
1301 break;
1302 case CISS_LV_NOT_AVAILABLE:
1303 status = "Volume waiting for transforming volume";
1304 break;
1305 case CISS_LV_QUEUED_FOR_EXPANSION:
1306 status = "Volume queued for expansion";
1307 break;
1308 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1309 status = "Volume disabled due to SCSI ID conflict";
1310 break;
1311 case CISS_LV_EJECTED:
1312 status = "Volume has been ejected";
1313 break;
1314 case CISS_LV_UNDERGOING_ERASE:
1315 status = "Volume undergoing background erase";
1316 break;
1317 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1318 status = "Volume ready for predictive spare rebuild";
1319 break;
1320 case CISS_LV_UNDERGOING_RPI:
1321 status = "Volume undergoing rapid parity initialization";
1322 break;
1323 case CISS_LV_PENDING_RPI:
1324 status = "Volume queued for rapid parity initialization";
1325 break;
1326 case CISS_LV_ENCRYPTED_NO_KEY:
1327 status = "Encrypted volume inaccessible - key not present";
1328 break;
1329 case CISS_LV_UNDERGOING_ENCRYPTION:
1330 status = "Volume undergoing encryption process";
1331 break;
1332 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1333 status = "Volume undergoing encryption re-keying process";
1334 break;
1335 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
d87d5474 1336 status = "Volume encrypted but encryption is disabled";
6c223761
KB		 1337 break;
1338 case CISS_LV_PENDING_ENCRYPTION:
1339 status = "Volume pending migration to encrypted state";
1340 break;
1341 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1342 status = "Volume pending encryption rekeying";
1343 break;
1344 case CISS_LV_NOT_SUPPORTED:
1345 status = "Volume not supported on this controller";
1346 break;
1347 case CISS_LV_STATUS_UNAVAILABLE:
1348 status = "Volume status not available";
1349 break;
1350 default:
1351 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1352 unknown_state_str, device->volume_status);
1353 status = unknown_state_buffer;
1354 break;
1355 }
1356
1357 dev_info(&ctrl_info->pci_dev->dev,
1358 "scsi %d:%d:%d:%d %s\n",
1359 ctrl_info->scsi_host->host_no,
1360 device->bus, device->target, device->lun, status);
1361}
1362
6c223761
KB		 1363static void pqi_rescan_worker(struct work_struct *work)
1364{
1365 struct pqi_ctrl_info *ctrl_info;
1366
1367 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1368 rescan_work);
1369
1370 pqi_scan_scsi_devices(ctrl_info);
1371}
1372
1373static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1374 struct pqi_scsi_dev *device)
1375{
1376 int rc;
1377
1378 if (pqi_is_logical_device(device))
1379 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1380 device->target, device->lun);
1381 else
1382 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1383
1384 return rc;
1385}
1386
1387static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info,
1388 struct pqi_scsi_dev *device)
1389{
1390 if (pqi_is_logical_device(device))
1391 scsi_remove_device(device->sdev);
1392 else
1393 pqi_remove_sas_device(device);
1394}
1395
1396/* Assumes the SCSI device list lock is held. */
1397
1398static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1399 int bus, int target, int lun)
1400{
1401 struct pqi_scsi_dev *device;
1402
1403 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1404 scsi_device_list_entry)
1405 if (device->bus == bus && device->target == target &&
1406 device->lun == lun)
1407 return device;
1408
1409 return NULL;
1410}
1411
1412static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1,
1413 struct pqi_scsi_dev *dev2)
1414{
1415 if (dev1->is_physical_device != dev2->is_physical_device)
1416 return false;
1417
1418 if (dev1->is_physical_device)
1419 return dev1->wwid == dev2->wwid;
1420
1421 return memcmp(dev1->volume_id, dev2->volume_id,
1422 sizeof(dev1->volume_id)) == 0;
1423}
1424
1425enum pqi_find_result {
1426 DEVICE_NOT_FOUND,
1427 DEVICE_CHANGED,
1428 DEVICE_SAME,
1429};
1430
1431static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
1432 struct pqi_scsi_dev *device_to_find,
1433 struct pqi_scsi_dev **matching_device)
1434{
1435 struct pqi_scsi_dev *device;
1436
1437 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1438 scsi_device_list_entry) {
1439 if (pqi_scsi3addr_equal(device_to_find->scsi3addr,
1440 device->scsi3addr)) {
1441 *matching_device = device;
1442 if (pqi_device_equal(device_to_find, device)) {
1443 if (device_to_find->volume_offline)
1444 return DEVICE_CHANGED;
1445 return DEVICE_SAME;
1446 }
1447 return DEVICE_CHANGED;
1448 }
1449 }
1450
1451 return DEVICE_NOT_FOUND;
1452}
1453
1454static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1455 char *action, struct pqi_scsi_dev *device)
1456{
1457 dev_info(&ctrl_info->pci_dev->dev,
94086f5b 1458 "%s scsi %d:%d:%d:%d: %s %.8s %.16s %-12s SSDSmartPathCap%c En%c qd=%d\n",
6c223761
KB		 1459 action,
1460 ctrl_info->scsi_host->host_no,
1461 device->bus,
1462 device->target,
1463 device->lun,
1464 scsi_device_type(device->devtype),
1465 device->vendor,
1466 device->model,
bd10cf0b
KB		 1467 pqi_is_logical_device(device) ?
1468 pqi_raid_level_to_string(device->raid_level) : "",
6c223761
KB		 1469 device->offload_configured ? '+' : '-',
1470 device->offload_enabled_pending ? '+' : '-',
6c223761
KB		 1471 device->queue_depth);
1472}
1473
1474/* Assumes the SCSI device list lock is held. */
1475
1476static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1477 struct pqi_scsi_dev *new_device)
1478{
1479 existing_device->devtype = new_device->devtype;
1480 existing_device->device_type = new_device->device_type;
1481 existing_device->bus = new_device->bus;
1482 if (new_device->target_lun_valid) {
1483 existing_device->target = new_device->target;
1484 existing_device->lun = new_device->lun;
1485 existing_device->target_lun_valid = true;
1486 }
1487
1488 /* By definition, the scsi3addr and wwid fields are already the same. */
1489
1490 existing_device->is_physical_device = new_device->is_physical_device;
bd10cf0b
KB		 1491 existing_device->is_external_raid_device =
1492 new_device->is_external_raid_device;
6c223761
KB		 1493 existing_device->aio_enabled = new_device->aio_enabled;
1494 memcpy(existing_device->vendor, new_device->vendor,
1495 sizeof(existing_device->vendor));
1496 memcpy(existing_device->model, new_device->model,
1497 sizeof(existing_device->model));
1498 existing_device->sas_address = new_device->sas_address;
1499 existing_device->raid_level = new_device->raid_level;
1500 existing_device->queue_depth = new_device->queue_depth;
1501 existing_device->aio_handle = new_device->aio_handle;
1502 existing_device->volume_status = new_device->volume_status;
1503 existing_device->active_path_index = new_device->active_path_index;
1504 existing_device->path_map = new_device->path_map;
1505 existing_device->bay = new_device->bay;
1506 memcpy(existing_device->box, new_device->box,
1507 sizeof(existing_device->box));
1508 memcpy(existing_device->phys_connector, new_device->phys_connector,
1509 sizeof(existing_device->phys_connector));
1510 existing_device->offload_configured = new_device->offload_configured;
1511 existing_device->offload_enabled = false;
1512 existing_device->offload_enabled_pending =
1513 new_device->offload_enabled_pending;
1514 existing_device->offload_to_mirror = 0;
1515 kfree(existing_device->raid_map);
1516 existing_device->raid_map = new_device->raid_map;
1517
1518 /* To prevent this from being freed later. */
1519 new_device->raid_map = NULL;
1520}
1521
1522static inline void pqi_free_device(struct pqi_scsi_dev *device)
1523{
1524 if (device) {
1525 kfree(device->raid_map);
1526 kfree(device);
1527 }
1528}
1529
1530/*
1531 * Called when exposing a new device to the OS fails in order to re-adjust
1532 * our internal SCSI device list to match the SCSI ML's view.
1533 */
1534
1535static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1536 struct pqi_scsi_dev *device)
1537{
1538 unsigned long flags;
1539
1540 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1541 list_del(&device->scsi_device_list_entry);
1542 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1543
1544 /* Allow the device structure to be freed later. */
1545 device->keep_device = false;
1546}
1547
1548static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1549 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1550{
1551 int rc;
1552 unsigned int i;
1553 unsigned long flags;
1554 enum pqi_find_result find_result;
1555 struct pqi_scsi_dev *device;
1556 struct pqi_scsi_dev *next;
1557 struct pqi_scsi_dev *matching_device;
1558 struct list_head add_list;
1559 struct list_head delete_list;
1560
1561 INIT_LIST_HEAD(&add_list);
1562 INIT_LIST_HEAD(&delete_list);
1563
1564 /*
1565 * The idea here is to do as little work as possible while holding the
1566 * spinlock. That's why we go to great pains to defer anything other
1567 * than updating the internal device list until after we release the
1568 * spinlock.
1569 */
1570
1571 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1572
1573 /* Assume that all devices in the existing list have gone away. */
1574 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1575 scsi_device_list_entry)
1576 device->device_gone = true;
1577
1578 for (i = 0; i < num_new_devices; i++) {
1579 device = new_device_list[i];
1580
1581 find_result = pqi_scsi_find_entry(ctrl_info, device,
1582 &matching_device);
1583
1584 switch (find_result) {
1585 case DEVICE_SAME:
1586 /*
1587 * The newly found device is already in the existing
1588 * device list.
1589 */
1590 device->new_device = false;
1591 matching_device->device_gone = false;
1592 pqi_scsi_update_device(matching_device, device);
1593 break;
1594 case DEVICE_NOT_FOUND:
1595 /*
1596 * The newly found device is NOT in the existing device
1597 * list.
1598 */
1599 device->new_device = true;
1600 break;
1601 case DEVICE_CHANGED:
1602 /*
1603 * The original device has gone away and we need to add
1604 * the new device.
1605 */
1606 device->new_device = true;
1607 break;
6c223761
KB		 1608 }
1609 }
1610
1611 /* Process all devices that have gone away. */
1612 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1613 scsi_device_list_entry) {
1614 if (device->device_gone) {
1615 list_del(&device->scsi_device_list_entry);
1616 list_add_tail(&device->delete_list_entry, &delete_list);
1617 }
1618 }
1619
1620 /* Process all new devices. */
1621 for (i = 0; i < num_new_devices; i++) {
1622 device = new_device_list[i];
1623 if (!device->new_device)
1624 continue;
1625 if (device->volume_offline)
1626 continue;
1627 list_add_tail(&device->scsi_device_list_entry,
1628 &ctrl_info->scsi_device_list);
1629 list_add_tail(&device->add_list_entry, &add_list);
1630 /* To prevent this device structure from being freed later. */
1631 device->keep_device = true;
1632 }
1633
6c223761
KB		 1634 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1635 scsi_device_list_entry)
1636 device->offload_enabled =
1637 device->offload_enabled_pending;
1638
1639 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1640
1641 /* Remove all devices that have gone away. */
1642 list_for_each_entry_safe(device, next, &delete_list,
1643 delete_list_entry) {
1644 if (device->sdev)
1645 pqi_remove_device(ctrl_info, device);
1646 if (device->volume_offline) {
1647 pqi_dev_info(ctrl_info, "offline", device);
1648 pqi_show_volume_status(ctrl_info, device);
1649 } else {
1650 pqi_dev_info(ctrl_info, "removed", device);
1651 }
1652 list_del(&device->delete_list_entry);
1653 pqi_free_device(device);
1654 }
1655
1656 /*
1657 * Notify the SCSI ML if the queue depth of any existing device has
1658 * changed.
1659 */
1660 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1661 scsi_device_list_entry) {
1662 if (device->sdev && device->queue_depth !=
1663 device->advertised_queue_depth) {
1664 device->advertised_queue_depth = device->queue_depth;
1665 scsi_change_queue_depth(device->sdev,
1666 device->advertised_queue_depth);
1667 }
1668 }
1669
1670 /* Expose any new devices. */
1671 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
94086f5b 1672 if (!device->sdev) {
6c223761
KB		 1673 rc = pqi_add_device(ctrl_info, device);
1674 if (rc) {
1675 dev_warn(&ctrl_info->pci_dev->dev,
1676 "scsi %d:%d:%d:%d addition failed, device not added\n",
1677 ctrl_info->scsi_host->host_no,
1678 device->bus, device->target,
1679 device->lun);
1680 pqi_fixup_botched_add(ctrl_info, device);
1681 continue;
1682 }
1683 }
1684 pqi_dev_info(ctrl_info, "added", device);
1685 }
1686}
1687
1688static bool pqi_is_supported_device(struct pqi_scsi_dev *device)
1689{
1690 bool is_supported = false;
1691
1692 switch (device->devtype) {
1693 case TYPE_DISK:
1694 case TYPE_ZBC:
1695 case TYPE_TAPE:
1696 case TYPE_MEDIUM_CHANGER:
1697 case TYPE_ENCLOSURE:
1698 is_supported = true;
1699 break;
1700 case TYPE_RAID:
1701 /*
1702 * Only support the HBA controller itself as a RAID
1703 * controller. If it's a RAID controller other than
376fb880
KB		 1704 * the HBA itself (an external RAID controller, for
1705 * example), we don't support it.
6c223761
KB		 1706 */
1707 if (pqi_is_hba_lunid(device->scsi3addr))
1708 is_supported = true;
1709 break;
1710 }
1711
1712 return is_supported;
1713}
1714
94086f5b 1715static inline bool pqi_skip_device(u8 *scsi3addr)
6c223761 1716{
94086f5b
KB		 1717 /* Ignore all masked devices. */
1718 if (MASKED_DEVICE(scsi3addr))
6c223761 1719 return true;
6c223761
KB		 1720
1721 return false;
1722}
1723
6c223761
KB		 1724static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1725{
1726 int i;
1727 int rc;
1728 struct list_head new_device_list_head;
1729 struct report_phys_lun_extended *physdev_list = NULL;
1730 struct report_log_lun_extended *logdev_list = NULL;
1731 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
1732 struct report_log_lun_extended_entry *log_lun_ext_entry;
1733 struct bmic_identify_physical_device *id_phys = NULL;
1734 u32 num_physicals;
1735 u32 num_logicals;
1736 struct pqi_scsi_dev **new_device_list = NULL;
1737 struct pqi_scsi_dev *device;
1738 struct pqi_scsi_dev *next;
1739 unsigned int num_new_devices;
1740 unsigned int num_valid_devices;
1741 bool is_physical_device;
1742 u8 *scsi3addr;
1743 static char *out_of_memory_msg =
1744 "out of memory, device discovery stopped";
1745
1746 INIT_LIST_HEAD(&new_device_list_head);
1747
1748 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
1749 if (rc)
1750 goto out;
1751
1752 if (physdev_list)
1753 num_physicals =
1754 get_unaligned_be32(&physdev_list->header.list_length)
1755 / sizeof(physdev_list->lun_entries[0]);
1756 else
1757 num_physicals = 0;
1758
1759 if (logdev_list)
1760 num_logicals =
1761 get_unaligned_be32(&logdev_list->header.list_length)
1762 / sizeof(logdev_list->lun_entries[0]);
1763 else
1764 num_logicals = 0;
1765
1766 if (num_physicals) {
1767 /*
1768 * We need this buffer for calls to pqi_get_physical_disk_info()
1769 * below. We allocate it here instead of inside
1770 * pqi_get_physical_disk_info() because it's a fairly large
1771 * buffer.
1772 */
1773 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
1774 if (!id_phys) {
1775 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1776 out_of_memory_msg);
1777 rc = -ENOMEM;
1778 goto out;
1779 }
1780 }
1781
1782 num_new_devices = num_physicals + num_logicals;
1783
1784 new_device_list = kmalloc(sizeof(*new_device_list) *
1785 num_new_devices, GFP_KERNEL);
1786 if (!new_device_list) {
1787 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
1788 rc = -ENOMEM;
1789 goto out;
1790 }
1791
1792 for (i = 0; i < num_new_devices; i++) {
1793 device = kzalloc(sizeof(*device), GFP_KERNEL);
1794 if (!device) {
1795 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1796 out_of_memory_msg);
1797 rc = -ENOMEM;
1798 goto out;
1799 }
1800 list_add_tail(&device->new_device_list_entry,
1801 &new_device_list_head);
1802 }
1803
1804 device = NULL;
1805 num_valid_devices = 0;
1806
1807 for (i = 0; i < num_new_devices; i++) {
1808
1809 if (i < num_physicals) {
1810 is_physical_device = true;
1811 phys_lun_ext_entry = &physdev_list->lun_entries[i];
1812 log_lun_ext_entry = NULL;
1813 scsi3addr = phys_lun_ext_entry->lunid;
1814 } else {
1815 is_physical_device = false;
1816 phys_lun_ext_entry = NULL;
1817 log_lun_ext_entry =
1818 &logdev_list->lun_entries[i - num_physicals];
1819 scsi3addr = log_lun_ext_entry->lunid;
1820 }
1821
94086f5b 1822 if (is_physical_device && pqi_skip_device(scsi3addr))
6c223761
KB		 1823 continue;
1824
1825 if (device)
1826 device = list_next_entry(device, new_device_list_entry);
1827 else
1828 device = list_first_entry(&new_device_list_head,
1829 struct pqi_scsi_dev, new_device_list_entry);
1830
1831 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1832 device->is_physical_device = is_physical_device;
bd10cf0b
KB		 1833 if (!is_physical_device)
1834 device->is_external_raid_device =
1835 pqi_is_external_raid_addr(scsi3addr);
6c223761
KB		 1836
1837 /* Gather information about the device. */
1838 rc = pqi_get_device_info(ctrl_info, device);
1839 if (rc == -ENOMEM) {
1840 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
1841 out_of_memory_msg);
1842 goto out;
1843 }
1844 if (rc) {
1845 dev_warn(&ctrl_info->pci_dev->dev,
1846 "obtaining device info failed, skipping device %016llx\n",
1847 get_unaligned_be64(device->scsi3addr));
1848 rc = 0;
1849 continue;
1850 }
1851
1852 if (!pqi_is_supported_device(device))
1853 continue;
1854
1855 pqi_assign_bus_target_lun(device);
1856
6c223761
KB		 1857 if (device->is_physical_device) {
1858 device->wwid = phys_lun_ext_entry->wwid;
1859 if ((phys_lun_ext_entry->device_flags &
1860 REPORT_PHYS_LUN_DEV_FLAG_AIO_ENABLED) &&
1861 phys_lun_ext_entry->aio_handle)
1862 device->aio_enabled = true;
1863 } else {
1864 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
1865 sizeof(device->volume_id));
1866 }
1867
1868 switch (device->devtype) {
1869 case TYPE_DISK:
1870 case TYPE_ZBC:
1871 case TYPE_ENCLOSURE:
1872 if (device->is_physical_device) {
1873 device->sas_address =
1874 get_unaligned_be64(&device->wwid);
1875 if (device->devtype == TYPE_DISK ||
1876 device->devtype == TYPE_ZBC) {
1877 device->aio_handle =
1878 phys_lun_ext_entry->aio_handle;
1879 pqi_get_physical_disk_info(ctrl_info,
1880 device, id_phys);
1881 }
1882 }
1883 break;
1884 }
1885
1886 new_device_list[num_valid_devices++] = device;
1887 }
1888
1889 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
1890
1891out:
1892 list_for_each_entry_safe(device, next, &new_device_list_head,
1893 new_device_list_entry) {
1894 if (device->keep_device)
1895 continue;
1896 list_del(&device->new_device_list_entry);
1897 pqi_free_device(device);
1898 }
1899
1900 kfree(new_device_list);
1901 kfree(physdev_list);
1902 kfree(logdev_list);
1903 kfree(id_phys);
1904
1905 return rc;
1906}
1907
1908static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1909{
1910 unsigned long flags;
1911 struct pqi_scsi_dev *device;
6c223761 1912
a37ef745
KB		 1913 while (1) {
1914 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1915
1916 device = list_first_entry_or_null(&ctrl_info->scsi_device_list,
1917 struct pqi_scsi_dev, scsi_device_list_entry);
1918 if (device)
1919 list_del(&device->scsi_device_list_entry);
1920
1921 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
1922 flags);
1923
1924 if (!device)
1925 break;
6c223761 1926
6c223761
KB		 1927 if (device->sdev)
1928 pqi_remove_device(ctrl_info, device);
6c223761
KB		 1929 pqi_free_device(device);
1930 }
6c223761
KB		 1931}
1932
1933static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1934{
1935 int rc;
1936
1937 if (pqi_ctrl_offline(ctrl_info))
1938 return -ENXIO;
1939
1940 mutex_lock(&ctrl_info->scan_mutex);
1941
1942 rc = pqi_update_scsi_devices(ctrl_info);
1943 if (rc)
5f310425 1944 pqi_schedule_rescan_worker_delayed(ctrl_info);
6c223761
KB		 1945
1946 mutex_unlock(&ctrl_info->scan_mutex);
1947
1948 return rc;
1949}
1950
1951static void pqi_scan_start(struct Scsi_Host *shost)
1952{
1953 pqi_scan_scsi_devices(shost_to_hba(shost));
1954}
1955
1956/* Returns TRUE if scan is finished. */
1957
1958static int pqi_scan_finished(struct Scsi_Host *shost,
1959 unsigned long elapsed_time)
1960{
1961 struct pqi_ctrl_info *ctrl_info;
1962
1963 ctrl_info = shost_priv(shost);
1964
1965 return !mutex_is_locked(&ctrl_info->scan_mutex);
1966}
1967
061ef06a
KB		 1968static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
1969{
1970 mutex_lock(&ctrl_info->scan_mutex);
1971 mutex_unlock(&ctrl_info->scan_mutex);
1972}
1973
1974static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
1975{
1976 mutex_lock(&ctrl_info->lun_reset_mutex);
1977 mutex_unlock(&ctrl_info->lun_reset_mutex);
1978}
1979
6c223761
KB		 1980static inline void pqi_set_encryption_info(
1981 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map,
1982 u64 first_block)
1983{
1984 u32 volume_blk_size;
1985
1986 /*
1987 * Set the encryption tweak values based on logical block address.
1988 * If the block size is 512, the tweak value is equal to the LBA.
1989 * For other block sizes, tweak value is (LBA * block size) / 512.
1990 */
1991 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
1992 if (volume_blk_size != 512)
1993 first_block = (first_block * volume_blk_size) / 512;
1994
1995 encryption_info->data_encryption_key_index =
1996 get_unaligned_le16(&raid_map->data_encryption_key_index);
1997 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
1998 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
1999}
2000
2001/*
2002 * Attempt to perform offload RAID mapping for a logical volume I/O.
2003 */
2004
2005#define PQI_RAID_BYPASS_INELIGIBLE 1
2006
2007static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2008 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2009 struct pqi_queue_group *queue_group)
2010{
2011 struct raid_map *raid_map;
2012 bool is_write = false;
2013 u32 map_index;
2014 u64 first_block;
2015 u64 last_block;
2016 u32 block_cnt;
2017 u32 blocks_per_row;
2018 u64 first_row;
2019 u64 last_row;
2020 u32 first_row_offset;
2021 u32 last_row_offset;
2022 u32 first_column;
2023 u32 last_column;
2024 u64 r0_first_row;
2025 u64 r0_last_row;
2026 u32 r5or6_blocks_per_row;
2027 u64 r5or6_first_row;
2028 u64 r5or6_last_row;
2029 u32 r5or6_first_row_offset;
2030 u32 r5or6_last_row_offset;
2031 u32 r5or6_first_column;
2032 u32 r5or6_last_column;
2033 u16 data_disks_per_row;
2034 u32 total_disks_per_row;
2035 u16 layout_map_count;
2036 u32 stripesize;
2037 u16 strip_size;
2038 u32 first_group;
2039 u32 last_group;
2040 u32 current_group;
2041 u32 map_row;
2042 u32 aio_handle;
2043 u64 disk_block;
2044 u32 disk_block_cnt;
2045 u8 cdb[16];
2046 u8 cdb_length;
2047 int offload_to_mirror;
2048 struct pqi_encryption_info *encryption_info_ptr;
2049 struct pqi_encryption_info encryption_info;
2050#if BITS_PER_LONG == 32
2051 u64 tmpdiv;
2052#endif
2053
2054 /* Check for valid opcode, get LBA and block count. */
2055 switch (scmd->cmnd[0]) {
2056 case WRITE_6:
2057 is_write = true;
2058 /* fall through */
2059 case READ_6:
e018ef57
B		 2060 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2061 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
6c223761
KB		 2062 block_cnt = (u32)scmd->cmnd[4];
2063 if (block_cnt == 0)
2064 block_cnt = 256;
2065 break;
2066 case WRITE_10:
2067 is_write = true;
2068 /* fall through */
2069 case READ_10:
2070 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2071 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2072 break;
2073 case WRITE_12:
2074 is_write = true;
2075 /* fall through */
2076 case READ_12:
2077 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2078 block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2079 break;
2080 case WRITE_16:
2081 is_write = true;
2082 /* fall through */
2083 case READ_16:
2084 first_block = get_unaligned_be64(&scmd->cmnd[2]);
2085 block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2086 break;
2087 default:
2088 /* Process via normal I/O path. */
2089 return PQI_RAID_BYPASS_INELIGIBLE;
2090 }
2091
2092 /* Check for write to non-RAID-0. */
2093 if (is_write && device->raid_level != SA_RAID_0)
2094 return PQI_RAID_BYPASS_INELIGIBLE;
2095
2096 if (unlikely(block_cnt == 0))
2097 return PQI_RAID_BYPASS_INELIGIBLE;
2098
2099 last_block = first_block + block_cnt - 1;
2100 raid_map = device->raid_map;
2101
2102 /* Check for invalid block or wraparound. */
2103 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2104 last_block < first_block)
2105 return PQI_RAID_BYPASS_INELIGIBLE;
2106
2107 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row);
2108 strip_size = get_unaligned_le16(&raid_map->strip_size);
2109 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2110
2111 /* Calculate stripe information for the request. */
2112 blocks_per_row = data_disks_per_row * strip_size;
2113#if BITS_PER_LONG == 32
2114 tmpdiv = first_block;
2115 do_div(tmpdiv, blocks_per_row);
2116 first_row = tmpdiv;
2117 tmpdiv = last_block;
2118 do_div(tmpdiv, blocks_per_row);
2119 last_row = tmpdiv;
2120 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2121 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2122 tmpdiv = first_row_offset;
2123 do_div(tmpdiv, strip_size);
2124 first_column = tmpdiv;
2125 tmpdiv = last_row_offset;
2126 do_div(tmpdiv, strip_size);
2127 last_column = tmpdiv;
2128#else
2129 first_row = first_block / blocks_per_row;
2130 last_row = last_block / blocks_per_row;
2131 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2132 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2133 first_column = first_row_offset / strip_size;
2134 last_column = last_row_offset / strip_size;
2135#endif
2136
2137 /* If this isn't a single row/column then give to the controller. */
2138 if (first_row != last_row || first_column != last_column)
2139 return PQI_RAID_BYPASS_INELIGIBLE;
2140
2141 /* Proceeding with driver mapping. */
2142 total_disks_per_row = data_disks_per_row +
2143 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2144 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2145 get_unaligned_le16(&raid_map->row_cnt);
2146 map_index = (map_row * total_disks_per_row) + first_column;
2147
2148 /* RAID 1 */
2149 if (device->raid_level == SA_RAID_1) {
2150 if (device->offload_to_mirror)
2151 map_index += data_disks_per_row;
2152 device->offload_to_mirror = !device->offload_to_mirror;
2153 } else if (device->raid_level == SA_RAID_ADM) {
2154 /* RAID ADM */
2155 /*
2156 * Handles N-way mirrors (R1-ADM) and R10 with # of drives
2157 * divisible by 3.
2158 */
2159 offload_to_mirror = device->offload_to_mirror;
2160 if (offload_to_mirror == 0) {
2161 /* use physical disk in the first mirrored group. */
2162 map_index %= data_disks_per_row;
2163 } else {
2164 do {
2165 /*
2166 * Determine mirror group that map_index
2167 * indicates.
2168 */
2169 current_group = map_index / data_disks_per_row;
2170
2171 if (offload_to_mirror != current_group) {
2172 if (current_group <
2173 layout_map_count - 1) {
2174 /*
2175 * Select raid index from
2176 * next group.
2177 */
2178 map_index += data_disks_per_row;
2179 current_group++;
2180 } else {
2181 /*
2182 * Select raid index from first
2183 * group.
2184 */
2185 map_index %= data_disks_per_row;
2186 current_group = 0;
2187 }
2188 }
2189 } while (offload_to_mirror != current_group);
2190 }
2191
2192 /* Set mirror group to use next time. */
2193 offload_to_mirror =
2194 (offload_to_mirror >= layout_map_count - 1) ?
2195 0 : offload_to_mirror + 1;
2196 WARN_ON(offload_to_mirror >= layout_map_count);
2197 device->offload_to_mirror = offload_to_mirror;
2198 /*
2199 * Avoid direct use of device->offload_to_mirror within this
2200 * function since multiple threads might simultaneously
2201 * increment it beyond the range of device->layout_map_count -1.
2202 */
2203 } else if ((device->raid_level == SA_RAID_5 ||
2204 device->raid_level == SA_RAID_6) && layout_map_count > 1) {
2205 /* RAID 50/60 */
2206 /* Verify first and last block are in same RAID group */
2207 r5or6_blocks_per_row = strip_size * data_disks_per_row;
2208 stripesize = r5or6_blocks_per_row * layout_map_count;
2209#if BITS_PER_LONG == 32
2210 tmpdiv = first_block;
2211 first_group = do_div(tmpdiv, stripesize);
2212 tmpdiv = first_group;
2213 do_div(tmpdiv, r5or6_blocks_per_row);
2214 first_group = tmpdiv;
2215 tmpdiv = last_block;
2216 last_group = do_div(tmpdiv, stripesize);
2217 tmpdiv = last_group;
2218 do_div(tmpdiv, r5or6_blocks_per_row);
2219 last_group = tmpdiv;
2220#else
2221 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
2222 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
2223#endif
2224 if (first_group != last_group)
2225 return PQI_RAID_BYPASS_INELIGIBLE;
2226
2227 /* Verify request is in a single row of RAID 5/6 */
2228#if BITS_PER_LONG == 32
2229 tmpdiv = first_block;
2230 do_div(tmpdiv, stripesize);
2231 first_row = r5or6_first_row = r0_first_row = tmpdiv;
2232 tmpdiv = last_block;
2233 do_div(tmpdiv, stripesize);
2234 r5or6_last_row = r0_last_row = tmpdiv;
2235#else
2236 first_row = r5or6_first_row = r0_first_row =
2237 first_block / stripesize;
2238 r5or6_last_row = r0_last_row = last_block / stripesize;
2239#endif
2240 if (r5or6_first_row != r5or6_last_row)
2241 return PQI_RAID_BYPASS_INELIGIBLE;
2242
2243 /* Verify request is in a single column */
2244#if BITS_PER_LONG == 32
2245 tmpdiv = first_block;
2246 first_row_offset = do_div(tmpdiv, stripesize);
2247 tmpdiv = first_row_offset;
2248 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row);
2249 r5or6_first_row_offset = first_row_offset;
2250 tmpdiv = last_block;
2251 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
2252 tmpdiv = r5or6_last_row_offset;
2253 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
2254 tmpdiv = r5or6_first_row_offset;
2255 do_div(tmpdiv, strip_size);
2256 first_column = r5or6_first_column = tmpdiv;
2257 tmpdiv = r5or6_last_row_offset;
2258 do_div(tmpdiv, strip_size);
2259 r5or6_last_column = tmpdiv;
2260#else
2261 first_row_offset = r5or6_first_row_offset =
2262 (u32)((first_block % stripesize) %
2263 r5or6_blocks_per_row);
2264
2265 r5or6_last_row_offset =
2266 (u32)((last_block % stripesize) %
2267 r5or6_blocks_per_row);
2268
2269 first_column = r5or6_first_row_offset / strip_size;
2270 r5or6_first_column = first_column;
2271 r5or6_last_column = r5or6_last_row_offset / strip_size;
2272#endif
2273 if (r5or6_first_column != r5or6_last_column)
2274 return PQI_RAID_BYPASS_INELIGIBLE;
2275
2276 /* Request is eligible */
2277 map_row =
2278 ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2279 get_unaligned_le16(&raid_map->row_cnt);
2280
2281 map_index = (first_group *
2282 (get_unaligned_le16(&raid_map->row_cnt) *
2283 total_disks_per_row)) +
2284 (map_row * total_disks_per_row) + first_column;
2285 }
2286
2287 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
2288 return PQI_RAID_BYPASS_INELIGIBLE;
2289
2290 aio_handle = raid_map->disk_data[map_index].aio_handle;
2291 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2292 first_row * strip_size +
2293 (first_row_offset - first_column * strip_size);
2294 disk_block_cnt = block_cnt;
2295
2296 /* Handle differing logical/physical block sizes. */
2297 if (raid_map->phys_blk_shift) {
2298 disk_block <<= raid_map->phys_blk_shift;
2299 disk_block_cnt <<= raid_map->phys_blk_shift;
2300 }
2301
2302 if (unlikely(disk_block_cnt > 0xffff))
2303 return PQI_RAID_BYPASS_INELIGIBLE;
2304
2305 /* Build the new CDB for the physical disk I/O. */
2306 if (disk_block > 0xffffffff) {
2307 cdb[0] = is_write ? WRITE_16 : READ_16;
2308 cdb[1] = 0;
2309 put_unaligned_be64(disk_block, &cdb[2]);
2310 put_unaligned_be32(disk_block_cnt, &cdb[10]);
2311 cdb[14] = 0;
2312 cdb[15] = 0;
2313 cdb_length = 16;
2314 } else {
2315 cdb[0] = is_write ? WRITE_10 : READ_10;
2316 cdb[1] = 0;
2317 put_unaligned_be32((u32)disk_block, &cdb[2]);
2318 cdb[6] = 0;
2319 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]);
2320 cdb[9] = 0;
2321 cdb_length = 10;
2322 }
2323
2324 if (get_unaligned_le16(&raid_map->flags) &
2325 RAID_MAP_ENCRYPTION_ENABLED) {
2326 pqi_set_encryption_info(&encryption_info, raid_map,
2327 first_block);
2328 encryption_info_ptr = &encryption_info;
2329 } else {
2330 encryption_info_ptr = NULL;
2331 }
2332
2333 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
376fb880 2334 cdb, cdb_length, queue_group, encryption_info_ptr, true);
6c223761
KB		 2335}
2336
2337#define PQI_STATUS_IDLE 0x0
2338
2339#define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2340#define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2341
2342#define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2343#define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2344#define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2345#define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2346#define PQI_DEVICE_STATE_ERROR 0x4
2347
2348#define PQI_MODE_READY_TIMEOUT_SECS 30
2349#define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2350
2351static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2352{
2353 struct pqi_device_registers __iomem *pqi_registers;
2354 unsigned long timeout;
2355 u64 signature;
2356 u8 status;
2357
2358 pqi_registers = ctrl_info->pqi_registers;
2359 timeout = (PQI_MODE_READY_TIMEOUT_SECS * HZ) + jiffies;
2360
2361 while (1) {
2362 signature = readq(&pqi_registers->signature);
2363 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2364 sizeof(signature)) == 0)
2365 break;
2366 if (time_after(jiffies, timeout)) {
2367 dev_err(&ctrl_info->pci_dev->dev,
2368 "timed out waiting for PQI signature\n");
2369 return -ETIMEDOUT;
2370 }
2371 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2372 }
2373
2374 while (1) {
2375 status = readb(&pqi_registers->function_and_status_code);
2376 if (status == PQI_STATUS_IDLE)
2377 break;
2378 if (time_after(jiffies, timeout)) {
2379 dev_err(&ctrl_info->pci_dev->dev,
2380 "timed out waiting for PQI IDLE\n");
2381 return -ETIMEDOUT;
2382 }
2383 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2384 }
2385
2386 while (1) {
2387 if (readl(&pqi_registers->device_status) ==
2388 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2389 break;
2390 if (time_after(jiffies, timeout)) {
2391 dev_err(&ctrl_info->pci_dev->dev,
2392 "timed out waiting for PQI all registers ready\n");
2393 return -ETIMEDOUT;
2394 }
2395 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2396 }
2397
2398 return 0;
2399}
2400
2401static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2402{
2403 struct pqi_scsi_dev *device;
2404
2405 device = io_request->scmd->device->hostdata;
2406 device->offload_enabled = false;
376fb880 2407 device->aio_enabled = false;
6c223761
KB		 2408}
2409
d87d5474 2410static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
6c223761
KB		 2411{
2412 struct pqi_ctrl_info *ctrl_info;
e58081a7 2413 struct pqi_scsi_dev *device;
6c223761 2414
03b288cf
KB		 2415 device = sdev->hostdata;
2416 if (device->device_offline)
2417 return;
2418
2419 device->device_offline = true;
2420 scsi_device_set_state(sdev, SDEV_OFFLINE);
2421 ctrl_info = shost_to_hba(sdev->host);
2422 pqi_schedule_rescan_worker(ctrl_info);
2423 dev_err(&ctrl_info->pci_dev->dev, "offlined %s scsi %d:%d:%d:%d\n",
2424 path, ctrl_info->scsi_host->host_no, device->bus,
2425 device->target, device->lun);
6c223761
KB		 2426}
2427
2428static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2429{
2430 u8 scsi_status;
2431 u8 host_byte;
2432 struct scsi_cmnd *scmd;
2433 struct pqi_raid_error_info *error_info;
2434 size_t sense_data_length;
2435 int residual_count;
2436 int xfer_count;
2437 struct scsi_sense_hdr sshdr;
2438
2439 scmd = io_request->scmd;
2440 if (!scmd)
2441 return;
2442
2443 error_info = io_request->error_info;
2444 scsi_status = error_info->status;
2445 host_byte = DID_OK;
2446
2447 if (error_info->data_out_result == PQI_DATA_IN_OUT_UNDERFLOW) {
2448 xfer_count =
2449 get_unaligned_le32(&error_info->data_out_transferred);
2450 residual_count = scsi_bufflen(scmd) - xfer_count;
2451 scsi_set_resid(scmd, residual_count);
2452 if (xfer_count < scmd->underflow)
2453 host_byte = DID_SOFT_ERROR;
2454 }
2455
2456 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2457 if (sense_data_length == 0)
2458 sense_data_length =
2459 get_unaligned_le16(&error_info->response_data_length);
2460 if (sense_data_length) {
2461 if (sense_data_length > sizeof(error_info->data))
2462 sense_data_length = sizeof(error_info->data);
2463
2464 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2465 scsi_normalize_sense(error_info->data,
2466 sense_data_length, &sshdr) &&
2467 sshdr.sense_key == HARDWARE_ERROR &&
2468 sshdr.asc == 0x3e &&
2469 sshdr.ascq == 0x1) {
d87d5474 2470 pqi_take_device_offline(scmd->device, "RAID");
6c223761
KB		 2471 host_byte = DID_NO_CONNECT;
2472 }
2473
2474 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2475 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2476 memcpy(scmd->sense_buffer, error_info->data,
2477 sense_data_length);
2478 }
2479
2480 scmd->result = scsi_status;
2481 set_host_byte(scmd, host_byte);
2482}
2483
2484static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2485{
2486 u8 scsi_status;
2487 u8 host_byte;
2488 struct scsi_cmnd *scmd;
2489 struct pqi_aio_error_info *error_info;
2490 size_t sense_data_length;
2491 int residual_count;
2492 int xfer_count;
2493 bool device_offline;
2494
2495 scmd = io_request->scmd;
2496 error_info = io_request->error_info;
2497 host_byte = DID_OK;
2498 sense_data_length = 0;
2499 device_offline = false;
2500
2501 switch (error_info->service_response) {
2502 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2503 scsi_status = error_info->status;
2504 break;
2505 case PQI_AIO_SERV_RESPONSE_FAILURE:
2506 switch (error_info->status) {
2507 case PQI_AIO_STATUS_IO_ABORTED:
2508 scsi_status = SAM_STAT_TASK_ABORTED;
2509 break;
2510 case PQI_AIO_STATUS_UNDERRUN:
2511 scsi_status = SAM_STAT_GOOD;
2512 residual_count = get_unaligned_le32(
2513 &error_info->residual_count);
2514 scsi_set_resid(scmd, residual_count);
2515 xfer_count = scsi_bufflen(scmd) - residual_count;
2516 if (xfer_count < scmd->underflow)
2517 host_byte = DID_SOFT_ERROR;
2518 break;
2519 case PQI_AIO_STATUS_OVERRUN:
2520 scsi_status = SAM_STAT_GOOD;
2521 break;
2522 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2523 pqi_aio_path_disabled(io_request);
2524 scsi_status = SAM_STAT_GOOD;
2525 io_request->status = -EAGAIN;
2526 break;
2527 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
2528 case PQI_AIO_STATUS_INVALID_DEVICE:
376fb880
KB		 2529 if (!io_request->raid_bypass) {
2530 device_offline = true;
2531 pqi_take_device_offline(scmd->device, "AIO");
2532 host_byte = DID_NO_CONNECT;
2533 }
6c223761
KB		 2534 scsi_status = SAM_STAT_CHECK_CONDITION;
2535 break;
2536 case PQI_AIO_STATUS_IO_ERROR:
2537 default:
2538 scsi_status = SAM_STAT_CHECK_CONDITION;
2539 break;
2540 }
2541 break;
2542 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
2543 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
2544 scsi_status = SAM_STAT_GOOD;
2545 break;
2546 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
2547 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
2548 default:
2549 scsi_status = SAM_STAT_CHECK_CONDITION;
2550 break;
2551 }
2552
2553 if (error_info->data_present) {
2554 sense_data_length =
2555 get_unaligned_le16(&error_info->data_length);
2556 if (sense_data_length) {
2557 if (sense_data_length > sizeof(error_info->data))
2558 sense_data_length = sizeof(error_info->data);
2559 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2560 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2561 memcpy(scmd->sense_buffer, error_info->data,
2562 sense_data_length);
2563 }
2564 }
2565
2566 if (device_offline && sense_data_length == 0)
2567 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
2568 0x3e, 0x1);
2569
2570 scmd->result = scsi_status;
2571 set_host_byte(scmd, host_byte);
2572}
2573
2574static void pqi_process_io_error(unsigned int iu_type,
2575 struct pqi_io_request *io_request)
2576{
2577 switch (iu_type) {
2578 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2579 pqi_process_raid_io_error(io_request);
2580 break;
2581 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2582 pqi_process_aio_io_error(io_request);
2583 break;
2584 }
2585}
2586
2587static int pqi_interpret_task_management_response(
2588 struct pqi_task_management_response *response)
2589{
2590 int rc;
2591
2592 switch (response->response_code) {
b17f0486
KB		 2593 case SOP_TMF_COMPLETE:
2594 case SOP_TMF_FUNCTION_SUCCEEDED:
6c223761
KB		 2595 rc = 0;
2596 break;
2597 default:
2598 rc = -EIO;
2599 break;
2600 }
2601
2602 return rc;
2603}
2604
2605static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info,
2606 struct pqi_queue_group *queue_group)
2607{
2608 unsigned int num_responses;
2609 pqi_index_t oq_pi;
2610 pqi_index_t oq_ci;
2611 struct pqi_io_request *io_request;
2612 struct pqi_io_response *response;
2613 u16 request_id;
2614
2615 num_responses = 0;
2616 oq_ci = queue_group->oq_ci_copy;
2617
2618 while (1) {
2619 oq_pi = *queue_group->oq_pi;
2620 if (oq_pi == oq_ci)
2621 break;
2622
2623 num_responses++;
2624 response = queue_group->oq_element_array +
2625 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
2626
2627 request_id = get_unaligned_le16(&response->request_id);
2628 WARN_ON(request_id >= ctrl_info->max_io_slots);
2629
2630 io_request = &ctrl_info->io_request_pool[request_id];
2631 WARN_ON(atomic_read(&io_request->refcount) == 0);
2632
2633 switch (response->header.iu_type) {
2634 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
2635 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2636 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
2637 break;
2638 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
2639 io_request->status =
2640 pqi_interpret_task_management_response(
2641 (void *)response);
2642 break;
2643 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
2644 pqi_aio_path_disabled(io_request);
2645 io_request->status = -EAGAIN;
2646 break;
2647 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2648 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2649 io_request->error_info = ctrl_info->error_buffer +
2650 (get_unaligned_le16(&response->error_index) *
2651 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
2652 pqi_process_io_error(response->header.iu_type,
2653 io_request);
2654 break;
2655 default:
2656 dev_err(&ctrl_info->pci_dev->dev,
2657 "unexpected IU type: 0x%x\n",
2658 response->header.iu_type);
6c223761
KB		 2659 break;
2660 }
2661
2662 io_request->io_complete_callback(io_request,
2663 io_request->context);
2664
2665 /*
2666 * Note that the I/O request structure CANNOT BE TOUCHED after
2667 * returning from the I/O completion callback!
2668 */
2669
2670 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
2671 }
2672
2673 if (num_responses) {
2674 queue_group->oq_ci_copy = oq_ci;
2675 writel(oq_ci, queue_group->oq_ci);
2676 }
2677
2678 return num_responses;
2679}
2680
2681static inline unsigned int pqi_num_elements_free(unsigned int pi,
df7a1fcf 2682 unsigned int ci, unsigned int elements_in_queue)
6c223761
KB		 2683{
2684 unsigned int num_elements_used;
2685
2686 if (pi >= ci)
2687 num_elements_used = pi - ci;
2688 else
2689 num_elements_used = elements_in_queue - ci + pi;
2690
2691 return elements_in_queue - num_elements_used - 1;
2692}
2693
98f87667 2694static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 2695 struct pqi_event_acknowledge_request *iu, size_t iu_length)
2696{
2697 pqi_index_t iq_pi;
2698 pqi_index_t iq_ci;
2699 unsigned long flags;
2700 void *next_element;
6c223761
KB		 2701 struct pqi_queue_group *queue_group;
2702
2703 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
2704 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
2705
6c223761
KB		 2706 while (1) {
2707 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
2708
2709 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
2710 iq_ci = *queue_group->iq_ci[RAID_PATH];
2711
2712 if (pqi_num_elements_free(iq_pi, iq_ci,
2713 ctrl_info->num_elements_per_iq))
2714 break;
2715
2716 spin_unlock_irqrestore(
2717 &queue_group->submit_lock[RAID_PATH], flags);
2718
98f87667 2719 if (pqi_ctrl_offline(ctrl_info))
6c223761 2720 return;
6c223761
KB		 2721 }
2722
2723 next_element = queue_group->iq_element_array[RAID_PATH] +
2724 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
2725
2726 memcpy(next_element, iu, iu_length);
2727
2728 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
6c223761
KB		 2729 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
2730
2731 /*
2732 * This write notifies the controller that an IU is available to be
2733 * processed.
2734 */
2735 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
2736
2737 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
6c223761
KB		 2738}
2739
2740static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
2741 struct pqi_event *event)
2742{
2743 struct pqi_event_acknowledge_request request;
2744
2745 memset(&request, 0, sizeof(request));
2746
2747 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
2748 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
2749 &request.header.iu_length);
2750 request.event_type = event->event_type;
2751 request.event_id = event->event_id;
2752 request.additional_event_id = event->additional_event_id;
2753
98f87667 2754 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
6c223761
KB		 2755}
2756
2757static void pqi_event_worker(struct work_struct *work)
2758{
2759 unsigned int i;
2760 struct pqi_ctrl_info *ctrl_info;
6a50d6ad 2761 struct pqi_event *event;
6c223761
KB		 2762
2763 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
2764
7561a7e4
KB		 2765 pqi_ctrl_busy(ctrl_info);
2766 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
5f310425
KB		 2767 if (pqi_ctrl_offline(ctrl_info))
2768 goto out;
2769
2770 pqi_schedule_rescan_worker_delayed(ctrl_info);
7561a7e4 2771
6a50d6ad 2772 event = ctrl_info->events;
6c223761 2773 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
6a50d6ad
KB		 2774 if (event->pending) {
2775 event->pending = false;
2776 pqi_acknowledge_event(ctrl_info, event);
6c223761 2777 }
6a50d6ad 2778 event++;
6c223761
KB		 2779 }
2780
5f310425 2781out:
7561a7e4 2782 pqi_ctrl_unbusy(ctrl_info);
6c223761
KB		 2783}
2784
98f87667 2785#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * HZ)
6c223761
KB		 2786
2787static void pqi_heartbeat_timer_handler(unsigned long data)
2788{
2789 int num_interrupts;
98f87667 2790 u32 heartbeat_count;
6c223761
KB		 2791 struct pqi_ctrl_info *ctrl_info = (struct pqi_ctrl_info *)data;
2792
98f87667
KB		 2793 pqi_check_ctrl_health(ctrl_info);
2794 if (pqi_ctrl_offline(ctrl_info))
061ef06a
KB		 2795 return;
2796
6c223761 2797 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
98f87667 2798 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
6c223761
KB		 2799
2800 if (num_interrupts == ctrl_info->previous_num_interrupts) {
98f87667
KB		 2801 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
2802 dev_err(&ctrl_info->pci_dev->dev,
2803 "no heartbeat detected - last heartbeat count: %u\n",
2804 heartbeat_count);
6c223761
KB		 2805 pqi_take_ctrl_offline(ctrl_info);
2806 return;
2807 }
6c223761 2808 } else {
98f87667 2809 ctrl_info->previous_num_interrupts = num_interrupts;
6c223761
KB		 2810 }
2811
98f87667 2812 ctrl_info->previous_heartbeat_count = heartbeat_count;
6c223761
KB		 2813 mod_timer(&ctrl_info->heartbeat_timer,
2814 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
2815}
2816
2817static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
2818{
98f87667
KB		 2819 if (!ctrl_info->heartbeat_counter)
2820 return;
2821
6c223761
KB		 2822 ctrl_info->previous_num_interrupts =
2823 atomic_read(&ctrl_info->num_interrupts);
98f87667
KB		 2824 ctrl_info->previous_heartbeat_count =
2825 pqi_read_heartbeat_counter(ctrl_info);
6c223761 2826
6c223761
KB		 2827 ctrl_info->heartbeat_timer.expires =
2828 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
2829 ctrl_info->heartbeat_timer.data = (unsigned long)ctrl_info;
2830 ctrl_info->heartbeat_timer.function = pqi_heartbeat_timer_handler;
061ef06a 2831 add_timer(&ctrl_info->heartbeat_timer);
6c223761
KB		 2832}
2833
2834static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
2835{
98f87667 2836 del_timer_sync(&ctrl_info->heartbeat_timer);
6c223761
KB		 2837}
2838
6a50d6ad 2839static inline int pqi_event_type_to_event_index(unsigned int event_type)
6c223761
KB		 2840{
2841 int index;
2842
6a50d6ad
KB		 2843 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
2844 if (event_type == pqi_supported_event_types[index])
2845 return index;
6c223761 2846
6a50d6ad
KB		 2847 return -1;
2848}
2849
2850static inline bool pqi_is_supported_event(unsigned int event_type)
2851{
2852 return pqi_event_type_to_event_index(event_type) != -1;
6c223761
KB		 2853}
2854
2855static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
2856{
2857 unsigned int num_events;
2858 pqi_index_t oq_pi;
2859 pqi_index_t oq_ci;
2860 struct pqi_event_queue *event_queue;
2861 struct pqi_event_response *response;
6a50d6ad 2862 struct pqi_event *event;
6c223761
KB		 2863 int event_index;
2864
2865 event_queue = &ctrl_info->event_queue;
2866 num_events = 0;
6c223761
KB		 2867 oq_ci = event_queue->oq_ci_copy;
2868
2869 while (1) {
2870 oq_pi = *event_queue->oq_pi;
2871 if (oq_pi == oq_ci)
2872 break;
2873
2874 num_events++;
2875 response = event_queue->oq_element_array +
2876 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
2877
2878 event_index =
2879 pqi_event_type_to_event_index(response->event_type);
2880
2881 if (event_index >= 0) {
2882 if (response->request_acknowlege) {
6a50d6ad
KB		 2883 event = &ctrl_info->events[event_index];
2884 event->pending = true;
2885 event->event_type = response->event_type;
2886 event->event_id = response->event_id;
2887 event->additional_event_id =
6c223761 2888 response->additional_event_id;
6c223761
KB		 2889 }
2890 }
2891
2892 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
2893 }
2894
2895 if (num_events) {
2896 event_queue->oq_ci_copy = oq_ci;
2897 writel(oq_ci, event_queue->oq_ci);
98f87667 2898 schedule_work(&ctrl_info->event_work);
6c223761
KB		 2899 }
2900
2901 return num_events;
2902}
2903
061ef06a
KB		 2904#define PQI_LEGACY_INTX_MASK 0x1
2905
2906static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info,
2907 bool enable_intx)
2908{
2909 u32 intx_mask;
2910 struct pqi_device_registers __iomem *pqi_registers;
2911 volatile void __iomem *register_addr;
2912
2913 pqi_registers = ctrl_info->pqi_registers;
2914
2915 if (enable_intx)
2916 register_addr = &pqi_registers->legacy_intx_mask_clear;
2917 else
2918 register_addr = &pqi_registers->legacy_intx_mask_set;
2919
2920 intx_mask = readl(register_addr);
2921 intx_mask |= PQI_LEGACY_INTX_MASK;
2922 writel(intx_mask, register_addr);
2923}
2924
2925static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
2926 enum pqi_irq_mode new_mode)
2927{
2928 switch (ctrl_info->irq_mode) {
2929 case IRQ_MODE_MSIX:
2930 switch (new_mode) {
2931 case IRQ_MODE_MSIX:
2932 break;
2933 case IRQ_MODE_INTX:
2934 pqi_configure_legacy_intx(ctrl_info, true);
2935 sis_disable_msix(ctrl_info);
2936 sis_enable_intx(ctrl_info);
2937 break;
2938 case IRQ_MODE_NONE:
2939 sis_disable_msix(ctrl_info);
2940 break;
2941 }
2942 break;
2943 case IRQ_MODE_INTX:
2944 switch (new_mode) {
2945 case IRQ_MODE_MSIX:
2946 pqi_configure_legacy_intx(ctrl_info, false);
2947 sis_disable_intx(ctrl_info);
2948 sis_enable_msix(ctrl_info);
2949 break;
2950 case IRQ_MODE_INTX:
2951 break;
2952 case IRQ_MODE_NONE:
2953 pqi_configure_legacy_intx(ctrl_info, false);
2954 sis_disable_intx(ctrl_info);
2955 break;
2956 }
2957 break;
2958 case IRQ_MODE_NONE:
2959 switch (new_mode) {
2960 case IRQ_MODE_MSIX:
2961 sis_enable_msix(ctrl_info);
2962 break;
2963 case IRQ_MODE_INTX:
2964 pqi_configure_legacy_intx(ctrl_info, true);
2965 sis_enable_intx(ctrl_info);
2966 break;
2967 case IRQ_MODE_NONE:
2968 break;
2969 }
2970 break;
2971 }
2972
2973 ctrl_info->irq_mode = new_mode;
2974}
2975
2976#define PQI_LEGACY_INTX_PENDING 0x1
2977
2978static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
2979{
2980 bool valid_irq;
2981 u32 intx_status;
2982
2983 switch (ctrl_info->irq_mode) {
2984 case IRQ_MODE_MSIX:
2985 valid_irq = true;
2986 break;
2987 case IRQ_MODE_INTX:
2988 intx_status =
2989 readl(&ctrl_info->pqi_registers->legacy_intx_status);
2990 if (intx_status & PQI_LEGACY_INTX_PENDING)
2991 valid_irq = true;
2992 else
2993 valid_irq = false;
2994 break;
2995 case IRQ_MODE_NONE:
2996 default:
2997 valid_irq = false;
2998 break;
2999 }
3000
3001 return valid_irq;
3002}
3003
6c223761
KB		 3004static irqreturn_t pqi_irq_handler(int irq, void *data)
3005{
3006 struct pqi_ctrl_info *ctrl_info;
3007 struct pqi_queue_group *queue_group;
3008 unsigned int num_responses_handled;
3009
3010 queue_group = data;
3011 ctrl_info = queue_group->ctrl_info;
3012
061ef06a 3013 if (!pqi_is_valid_irq(ctrl_info))
6c223761
KB		 3014 return IRQ_NONE;
3015
3016 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3017
3018 if (irq == ctrl_info->event_irq)
3019 num_responses_handled += pqi_process_event_intr(ctrl_info);
3020
3021 if (num_responses_handled)
3022 atomic_inc(&ctrl_info->num_interrupts);
3023
3024 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3025 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3026
3027 return IRQ_HANDLED;
3028}
3029
3030static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3031{
d91d7820 3032 struct pci_dev *pci_dev = ctrl_info->pci_dev;
6c223761
KB		 3033 int i;
3034 int rc;
3035
d91d7820 3036 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
6c223761
KB		 3037
3038 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
d91d7820 3039 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
52198226 3040 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
6c223761 3041 if (rc) {
d91d7820 3042 dev_err(&pci_dev->dev,
6c223761 3043 "irq %u init failed with error %d\n",
d91d7820 3044 pci_irq_vector(pci_dev, i), rc);
6c223761
KB		 3045 return rc;
3046 }
3047 ctrl_info->num_msix_vectors_initialized++;
3048 }
3049
3050 return 0;
3051}
3052
98bf061b
KB		 3053static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3054{
3055 int i;
3056
3057 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3058 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3059 &ctrl_info->queue_groups[i]);
3060
3061 ctrl_info->num_msix_vectors_initialized = 0;
3062}
3063
6c223761
KB		 3064static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3065{
98bf061b 3066 int num_vectors_enabled;
6c223761 3067
98bf061b 3068 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
52198226
CH		 3069 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3070 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
98bf061b 3071 if (num_vectors_enabled < 0) {
6c223761 3072 dev_err(&ctrl_info->pci_dev->dev,
98bf061b
KB		 3073 "MSI-X init failed with error %d\n",
3074 num_vectors_enabled);
3075 return num_vectors_enabled;
6c223761
KB		 3076 }
3077
98bf061b 3078 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
061ef06a 3079 ctrl_info->irq_mode = IRQ_MODE_MSIX;
6c223761
KB		 3080 return 0;
3081}
3082
98bf061b
KB		 3083static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3084{
3085 if (ctrl_info->num_msix_vectors_enabled) {
3086 pci_free_irq_vectors(ctrl_info->pci_dev);
3087 ctrl_info->num_msix_vectors_enabled = 0;
3088 }
3089}
3090
6c223761
KB		 3091static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3092{
3093 unsigned int i;
3094 size_t alloc_length;
3095 size_t element_array_length_per_iq;
3096 size_t element_array_length_per_oq;
3097 void *element_array;
3098 void *next_queue_index;
3099 void *aligned_pointer;
3100 unsigned int num_inbound_queues;
3101 unsigned int num_outbound_queues;
3102 unsigned int num_queue_indexes;
3103 struct pqi_queue_group *queue_group;
3104
3105 element_array_length_per_iq =
3106 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3107 ctrl_info->num_elements_per_iq;
3108 element_array_length_per_oq =
3109 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3110 ctrl_info->num_elements_per_oq;
3111 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3112 num_outbound_queues = ctrl_info->num_queue_groups;
3113 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3114
3115 aligned_pointer = NULL;
3116
3117 for (i = 0; i < num_inbound_queues; i++) {
3118 aligned_pointer = PTR_ALIGN(aligned_pointer,
3119 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3120 aligned_pointer += element_array_length_per_iq;
3121 }
3122
3123 for (i = 0; i < num_outbound_queues; i++) {
3124 aligned_pointer = PTR_ALIGN(aligned_pointer,
3125 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3126 aligned_pointer += element_array_length_per_oq;
3127 }
3128
3129 aligned_pointer = PTR_ALIGN(aligned_pointer,
3130 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3131 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3132 PQI_EVENT_OQ_ELEMENT_LENGTH;
3133
3134 for (i = 0; i < num_queue_indexes; i++) {
3135 aligned_pointer = PTR_ALIGN(aligned_pointer,
3136 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3137 aligned_pointer += sizeof(pqi_index_t);
3138 }
3139
3140 alloc_length = (size_t)aligned_pointer +
3141 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3142
e1d213bd
KB		 3143 alloc_length += PQI_EXTRA_SGL_MEMORY;
3144
6c223761
KB		 3145 ctrl_info->queue_memory_base =
3146 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3147 alloc_length,
3148 &ctrl_info->queue_memory_base_dma_handle, GFP_KERNEL);
3149
d87d5474 3150 if (!ctrl_info->queue_memory_base)
6c223761 3151 return -ENOMEM;
6c223761
KB		 3152
3153 ctrl_info->queue_memory_length = alloc_length;
3154
3155 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3156 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3157
3158 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3159 queue_group = &ctrl_info->queue_groups[i];
3160 queue_group->iq_element_array[RAID_PATH] = element_array;
3161 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3162 ctrl_info->queue_memory_base_dma_handle +
3163 (element_array - ctrl_info->queue_memory_base);
3164 element_array += element_array_length_per_iq;
3165 element_array = PTR_ALIGN(element_array,
3166 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3167 queue_group->iq_element_array[AIO_PATH] = element_array;
3168 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3169 ctrl_info->queue_memory_base_dma_handle +
3170 (element_array - ctrl_info->queue_memory_base);
3171 element_array += element_array_length_per_iq;
3172 element_array = PTR_ALIGN(element_array,
3173 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3174 }
3175
3176 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3177 queue_group = &ctrl_info->queue_groups[i];
3178 queue_group->oq_element_array = element_array;
3179 queue_group->oq_element_array_bus_addr =
3180 ctrl_info->queue_memory_base_dma_handle +
3181 (element_array - ctrl_info->queue_memory_base);
3182 element_array += element_array_length_per_oq;
3183 element_array = PTR_ALIGN(element_array,
3184 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3185 }
3186
3187 ctrl_info->event_queue.oq_element_array = element_array;
3188 ctrl_info->event_queue.oq_element_array_bus_addr =
3189 ctrl_info->queue_memory_base_dma_handle +
3190 (element_array - ctrl_info->queue_memory_base);
3191 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3192 PQI_EVENT_OQ_ELEMENT_LENGTH;
3193
3194 next_queue_index = PTR_ALIGN(element_array,
3195 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3196
3197 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3198 queue_group = &ctrl_info->queue_groups[i];
3199 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3200 queue_group->iq_ci_bus_addr[RAID_PATH] =
3201 ctrl_info->queue_memory_base_dma_handle +
3202 (next_queue_index - ctrl_info->queue_memory_base);
3203 next_queue_index += sizeof(pqi_index_t);
3204 next_queue_index = PTR_ALIGN(next_queue_index,
3205 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3206 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3207 queue_group->iq_ci_bus_addr[AIO_PATH] =
3208 ctrl_info->queue_memory_base_dma_handle +
3209 (next_queue_index - ctrl_info->queue_memory_base);
3210 next_queue_index += sizeof(pqi_index_t);
3211 next_queue_index = PTR_ALIGN(next_queue_index,
3212 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3213 queue_group->oq_pi = next_queue_index;
3214 queue_group->oq_pi_bus_addr =
3215 ctrl_info->queue_memory_base_dma_handle +
3216 (next_queue_index - ctrl_info->queue_memory_base);
3217 next_queue_index += sizeof(pqi_index_t);
3218 next_queue_index = PTR_ALIGN(next_queue_index,
3219 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3220 }
3221
3222 ctrl_info->event_queue.oq_pi = next_queue_index;
3223 ctrl_info->event_queue.oq_pi_bus_addr =
3224 ctrl_info->queue_memory_base_dma_handle +
3225 (next_queue_index - ctrl_info->queue_memory_base);
3226
3227 return 0;
3228}
3229
3230static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3231{
3232 unsigned int i;
3233 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3234 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3235
3236 /*
3237 * Initialize the backpointers to the controller structure in
3238 * each operational queue group structure.
3239 */
3240 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3241 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3242
3243 /*
3244 * Assign IDs to all operational queues. Note that the IDs
3245 * assigned to operational IQs are independent of the IDs
3246 * assigned to operational OQs.
3247 */
3248 ctrl_info->event_queue.oq_id = next_oq_id++;
3249 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3250 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3251 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3252 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3253 }
3254
3255 /*
3256 * Assign MSI-X table entry indexes to all queues. Note that the
3257 * interrupt for the event queue is shared with the first queue group.
3258 */
3259 ctrl_info->event_queue.int_msg_num = 0;
3260 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3261 ctrl_info->queue_groups[i].int_msg_num = i;
3262
3263 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3264 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3265 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3266 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3267 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3268 }
3269}
3270
3271static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3272{
3273 size_t alloc_length;
3274 struct pqi_admin_queues_aligned *admin_queues_aligned;
3275 struct pqi_admin_queues *admin_queues;
3276
3277 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3278 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3279
3280 ctrl_info->admin_queue_memory_base =
3281 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3282 alloc_length,
3283 &ctrl_info->admin_queue_memory_base_dma_handle,
3284 GFP_KERNEL);
3285
3286 if (!ctrl_info->admin_queue_memory_base)
3287 return -ENOMEM;
3288
3289 ctrl_info->admin_queue_memory_length = alloc_length;
3290
3291 admin_queues = &ctrl_info->admin_queues;
3292 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3293 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3294 admin_queues->iq_element_array =
3295 &admin_queues_aligned->iq_element_array;
3296 admin_queues->oq_element_array =
3297 &admin_queues_aligned->oq_element_array;
3298 admin_queues->iq_ci = &admin_queues_aligned->iq_ci;
3299 admin_queues->oq_pi = &admin_queues_aligned->oq_pi;
3300
3301 admin_queues->iq_element_array_bus_addr =
3302 ctrl_info->admin_queue_memory_base_dma_handle +
3303 (admin_queues->iq_element_array -
3304 ctrl_info->admin_queue_memory_base);
3305 admin_queues->oq_element_array_bus_addr =
3306 ctrl_info->admin_queue_memory_base_dma_handle +
3307 (admin_queues->oq_element_array -
3308 ctrl_info->admin_queue_memory_base);
3309 admin_queues->iq_ci_bus_addr =
3310 ctrl_info->admin_queue_memory_base_dma_handle +
3311 ((void *)admin_queues->iq_ci -
3312 ctrl_info->admin_queue_memory_base);
3313 admin_queues->oq_pi_bus_addr =
3314 ctrl_info->admin_queue_memory_base_dma_handle +
3315 ((void *)admin_queues->oq_pi -
3316 ctrl_info->admin_queue_memory_base);
3317
3318 return 0;
3319}
3320
3321#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES HZ
3322#define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3323
3324static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3325{
3326 struct pqi_device_registers __iomem *pqi_registers;
3327 struct pqi_admin_queues *admin_queues;
3328 unsigned long timeout;
3329 u8 status;
3330 u32 reg;
3331
3332 pqi_registers = ctrl_info->pqi_registers;
3333 admin_queues = &ctrl_info->admin_queues;
3334
3335 writeq((u64)admin_queues->iq_element_array_bus_addr,
3336 &pqi_registers->admin_iq_element_array_addr);
3337 writeq((u64)admin_queues->oq_element_array_bus_addr,
3338 &pqi_registers->admin_oq_element_array_addr);
3339 writeq((u64)admin_queues->iq_ci_bus_addr,
3340 &pqi_registers->admin_iq_ci_addr);
3341 writeq((u64)admin_queues->oq_pi_bus_addr,
3342 &pqi_registers->admin_oq_pi_addr);
3343
3344 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
3345 (PQI_ADMIN_OQ_NUM_ELEMENTS) << 8 |
3346 (admin_queues->int_msg_num << 16);
3347 writel(reg, &pqi_registers->admin_iq_num_elements);
3348 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3349 &pqi_registers->function_and_status_code);
3350
3351 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3352 while (1) {
3353 status = readb(&pqi_registers->function_and_status_code);
3354 if (status == PQI_STATUS_IDLE)
3355 break;
3356 if (time_after(jiffies, timeout))
3357 return -ETIMEDOUT;
3358 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
3359 }
3360
3361 /*
3362 * The offset registers are not initialized to the correct
3363 * offsets until *after* the create admin queue pair command
3364 * completes successfully.
3365 */
3366 admin_queues->iq_pi = ctrl_info->iomem_base +
3367 PQI_DEVICE_REGISTERS_OFFSET +
3368 readq(&pqi_registers->admin_iq_pi_offset);
3369 admin_queues->oq_ci = ctrl_info->iomem_base +
3370 PQI_DEVICE_REGISTERS_OFFSET +
3371 readq(&pqi_registers->admin_oq_ci_offset);
3372
3373 return 0;
3374}
3375
3376static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
3377 struct pqi_general_admin_request *request)
3378{
3379 struct pqi_admin_queues *admin_queues;
3380 void *next_element;
3381 pqi_index_t iq_pi;
3382
3383 admin_queues = &ctrl_info->admin_queues;
3384 iq_pi = admin_queues->iq_pi_copy;
3385
3386 next_element = admin_queues->iq_element_array +
3387 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
3388
3389 memcpy(next_element, request, sizeof(*request));
3390
3391 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
3392 admin_queues->iq_pi_copy = iq_pi;
3393
3394 /*
3395 * This write notifies the controller that an IU is available to be
3396 * processed.
3397 */
3398 writel(iq_pi, admin_queues->iq_pi);
3399}
3400
3401static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
3402 struct pqi_general_admin_response *response)
3403{
3404 struct pqi_admin_queues *admin_queues;
3405 pqi_index_t oq_pi;
3406 pqi_index_t oq_ci;
3407 unsigned long timeout;
3408
3409 admin_queues = &ctrl_info->admin_queues;
3410 oq_ci = admin_queues->oq_ci_copy;
3411
3412 timeout = (3 * HZ) + jiffies;
3413
3414 while (1) {
3415 oq_pi = *admin_queues->oq_pi;
3416 if (oq_pi != oq_ci)
3417 break;
3418 if (time_after(jiffies, timeout)) {
3419 dev_err(&ctrl_info->pci_dev->dev,
3420 "timed out waiting for admin response\n");
3421 return -ETIMEDOUT;
3422 }
3423 usleep_range(1000, 2000);
3424 }
3425
3426 memcpy(response, admin_queues->oq_element_array +
3427 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
3428
3429 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
3430 admin_queues->oq_ci_copy = oq_ci;
3431 writel(oq_ci, admin_queues->oq_ci);
3432
3433 return 0;
3434}
3435
3436static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
3437 struct pqi_queue_group *queue_group, enum pqi_io_path path,
3438 struct pqi_io_request *io_request)
3439{
3440 struct pqi_io_request *next;
3441 void *next_element;
3442 pqi_index_t iq_pi;
3443 pqi_index_t iq_ci;
3444 size_t iu_length;
3445 unsigned long flags;
3446 unsigned int num_elements_needed;
3447 unsigned int num_elements_to_end_of_queue;
3448 size_t copy_count;
3449 struct pqi_iu_header *request;
3450
3451 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
3452
376fb880
KB		 3453 if (io_request) {
3454 io_request->queue_group = queue_group;
6c223761
KB		 3455 list_add_tail(&io_request->request_list_entry,
3456 &queue_group->request_list[path]);
376fb880 3457 }
6c223761
KB		 3458
3459 iq_pi = queue_group->iq_pi_copy[path];
3460
3461 list_for_each_entry_safe(io_request, next,
3462 &queue_group->request_list[path], request_list_entry) {
3463
3464 request = io_request->iu;
3465
3466 iu_length = get_unaligned_le16(&request->iu_length) +
3467 PQI_REQUEST_HEADER_LENGTH;
3468 num_elements_needed =
3469 DIV_ROUND_UP(iu_length,
3470 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3471
3472 iq_ci = *queue_group->iq_ci[path];
3473
3474 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
3475 ctrl_info->num_elements_per_iq))
3476 break;
3477
3478 put_unaligned_le16(queue_group->oq_id,
3479 &request->response_queue_id);
3480
3481 next_element = queue_group->iq_element_array[path] +
3482 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3483
3484 num_elements_to_end_of_queue =
3485 ctrl_info->num_elements_per_iq - iq_pi;
3486
3487 if (num_elements_needed <= num_elements_to_end_of_queue) {
3488 memcpy(next_element, request, iu_length);
3489 } else {
3490 copy_count = num_elements_to_end_of_queue *
3491 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
3492 memcpy(next_element, request, copy_count);
3493 memcpy(queue_group->iq_element_array[path],
3494 (u8 *)request + copy_count,
3495 iu_length - copy_count);
3496 }
3497
3498 iq_pi = (iq_pi + num_elements_needed) %
3499 ctrl_info->num_elements_per_iq;
3500
3501 list_del(&io_request->request_list_entry);
3502 }
3503
3504 if (iq_pi != queue_group->iq_pi_copy[path]) {
3505 queue_group->iq_pi_copy[path] = iq_pi;
3506 /*
3507 * This write notifies the controller that one or more IUs are
3508 * available to be processed.
3509 */
3510 writel(iq_pi, queue_group->iq_pi[path]);
3511 }
3512
3513 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
3514}
3515
1f37e992
KB		 3516#define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
3517
3518static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
3519 struct completion *wait)
3520{
3521 int rc;
1f37e992
KB		 3522
3523 while (1) {
3524 if (wait_for_completion_io_timeout(wait,
3525 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) {
3526 rc = 0;
3527 break;
3528 }
3529
3530 pqi_check_ctrl_health(ctrl_info);
3531 if (pqi_ctrl_offline(ctrl_info)) {
3532 rc = -ENXIO;
3533 break;
3534 }
1f37e992
KB		 3535 }
3536
3537 return rc;
3538}
3539
6c223761
KB		 3540static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
3541 void *context)
3542{
3543 struct completion *waiting = context;
3544
3545 complete(waiting);
3546}
3547
3548static int pqi_submit_raid_request_synchronous_with_io_request(
3549 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
3550 unsigned long timeout_msecs)
3551{
3552 int rc = 0;
3553 DECLARE_COMPLETION_ONSTACK(wait);
3554
3555 io_request->io_complete_callback = pqi_raid_synchronous_complete;
3556 io_request->context = &wait;
3557
3558 pqi_start_io(ctrl_info,
3559 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
3560 io_request);
3561
3562 if (timeout_msecs == NO_TIMEOUT) {
1f37e992 3563 pqi_wait_for_completion_io(ctrl_info, &wait);
6c223761
KB		 3564 } else {
3565 if (!wait_for_completion_io_timeout(&wait,
3566 msecs_to_jiffies(timeout_msecs))) {
3567 dev_warn(&ctrl_info->pci_dev->dev,
3568 "command timed out\n");
3569 rc = -ETIMEDOUT;
3570 }
3571 }
3572
3573 return rc;
3574}
3575
3576static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
3577 struct pqi_iu_header *request, unsigned int flags,
3578 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
3579{
3580 int rc;
3581 struct pqi_io_request *io_request;
3582 unsigned long start_jiffies;
3583 unsigned long msecs_blocked;
3584 size_t iu_length;
3585
3586 /*
3587 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
3588 * are mutually exclusive.
3589 */
3590
3591 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
3592 if (down_interruptible(&ctrl_info->sync_request_sem))
3593 return -ERESTARTSYS;
3594 } else {
3595 if (timeout_msecs == NO_TIMEOUT) {
3596 down(&ctrl_info->sync_request_sem);
3597 } else {
3598 start_jiffies = jiffies;
3599 if (down_timeout(&ctrl_info->sync_request_sem,
3600 msecs_to_jiffies(timeout_msecs)))
3601 return -ETIMEDOUT;
3602 msecs_blocked =
3603 jiffies_to_msecs(jiffies - start_jiffies);
3604 if (msecs_blocked >= timeout_msecs)
3605 return -ETIMEDOUT;
3606 timeout_msecs -= msecs_blocked;
3607 }
3608 }
3609
7561a7e4
KB		 3610 pqi_ctrl_busy(ctrl_info);
3611 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
3612 if (timeout_msecs == 0) {
3613 rc = -ETIMEDOUT;
3614 goto out;
3615 }
3616
376fb880
KB		 3617 if (pqi_ctrl_offline(ctrl_info)) {
3618 rc = -ENXIO;
3619 goto out;
3620 }
3621
6c223761
KB		 3622 io_request = pqi_alloc_io_request(ctrl_info);
3623
3624 put_unaligned_le16(io_request->index,
3625 &(((struct pqi_raid_path_request *)request)->request_id));
3626
3627 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
3628 ((struct pqi_raid_path_request *)request)->error_index =
3629 ((struct pqi_raid_path_request *)request)->request_id;
3630
3631 iu_length = get_unaligned_le16(&request->iu_length) +
3632 PQI_REQUEST_HEADER_LENGTH;
3633 memcpy(io_request->iu, request, iu_length);
3634
3635 rc = pqi_submit_raid_request_synchronous_with_io_request(ctrl_info,
3636 io_request, timeout_msecs);
3637
3638 if (error_info) {
3639 if (io_request->error_info)
3640 memcpy(error_info, io_request->error_info,
3641 sizeof(*error_info));
3642 else
3643 memset(error_info, 0, sizeof(*error_info));
3644 } else if (rc == 0 && io_request->error_info) {
3645 u8 scsi_status;
3646 struct pqi_raid_error_info *raid_error_info;
3647
3648 raid_error_info = io_request->error_info;
3649 scsi_status = raid_error_info->status;
3650
3651 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
3652 raid_error_info->data_out_result ==
3653 PQI_DATA_IN_OUT_UNDERFLOW)
3654 scsi_status = SAM_STAT_GOOD;
3655
3656 if (scsi_status != SAM_STAT_GOOD)
3657 rc = -EIO;
3658 }
3659
3660 pqi_free_io_request(io_request);
3661
7561a7e4
KB		 3662out:
3663 pqi_ctrl_unbusy(ctrl_info);
6c223761
KB		 3664 up(&ctrl_info->sync_request_sem);
3665
3666 return rc;
3667}
3668
3669static int pqi_validate_admin_response(
3670 struct pqi_general_admin_response *response, u8 expected_function_code)
3671{
3672 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
3673 return -EINVAL;
3674
3675 if (get_unaligned_le16(&response->header.iu_length) !=
3676 PQI_GENERAL_ADMIN_IU_LENGTH)
3677 return -EINVAL;
3678
3679 if (response->function_code != expected_function_code)
3680 return -EINVAL;
3681
3682 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
3683 return -EINVAL;
3684
3685 return 0;
3686}
3687
3688static int pqi_submit_admin_request_synchronous(
3689 struct pqi_ctrl_info *ctrl_info,
3690 struct pqi_general_admin_request *request,
3691 struct pqi_general_admin_response *response)
3692{
3693 int rc;
3694
3695 pqi_submit_admin_request(ctrl_info, request);
3696
3697 rc = pqi_poll_for_admin_response(ctrl_info, response);
3698
3699 if (rc == 0)
3700 rc = pqi_validate_admin_response(response,
3701 request->function_code);
3702
3703 return rc;
3704}
3705
3706static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
3707{
3708 int rc;
3709 struct pqi_general_admin_request request;
3710 struct pqi_general_admin_response response;
3711 struct pqi_device_capability *capability;
3712 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
3713
3714 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
3715 if (!capability)
3716 return -ENOMEM;
3717
3718 memset(&request, 0, sizeof(request));
3719
3720 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3721 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3722 &request.header.iu_length);
3723 request.function_code =
3724 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
3725 put_unaligned_le32(sizeof(*capability),
3726 &request.data.report_device_capability.buffer_length);
3727
3728 rc = pqi_map_single(ctrl_info->pci_dev,
3729 &request.data.report_device_capability.sg_descriptor,
3730 capability, sizeof(*capability),
3731 PCI_DMA_FROMDEVICE);
3732 if (rc)
3733 goto out;
3734
3735 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3736 &response);
3737
3738 pqi_pci_unmap(ctrl_info->pci_dev,
3739 &request.data.report_device_capability.sg_descriptor, 1,
3740 PCI_DMA_FROMDEVICE);
3741
3742 if (rc)
3743 goto out;
3744
3745 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
3746 rc = -EIO;
3747 goto out;
3748 }
3749
3750 ctrl_info->max_inbound_queues =
3751 get_unaligned_le16(&capability->max_inbound_queues);
3752 ctrl_info->max_elements_per_iq =
3753 get_unaligned_le16(&capability->max_elements_per_iq);
3754 ctrl_info->max_iq_element_length =
3755 get_unaligned_le16(&capability->max_iq_element_length)
3756 * 16;
3757 ctrl_info->max_outbound_queues =
3758 get_unaligned_le16(&capability->max_outbound_queues);
3759 ctrl_info->max_elements_per_oq =
3760 get_unaligned_le16(&capability->max_elements_per_oq);
3761 ctrl_info->max_oq_element_length =
3762 get_unaligned_le16(&capability->max_oq_element_length)
3763 * 16;
3764
3765 sop_iu_layer_descriptor =
3766 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
3767
3768 ctrl_info->max_inbound_iu_length_per_firmware =
3769 get_unaligned_le16(
3770 &sop_iu_layer_descriptor->max_inbound_iu_length);
3771 ctrl_info->inbound_spanning_supported =
3772 sop_iu_layer_descriptor->inbound_spanning_supported;
3773 ctrl_info->outbound_spanning_supported =
3774 sop_iu_layer_descriptor->outbound_spanning_supported;
3775
3776out:
3777 kfree(capability);
3778
3779 return rc;
3780}
3781
3782static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
3783{
3784 if (ctrl_info->max_iq_element_length <
3785 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
3786 dev_err(&ctrl_info->pci_dev->dev,
3787 "max. inbound queue element length of %d is less than the required length of %d\n",
3788 ctrl_info->max_iq_element_length,
3789 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3790 return -EINVAL;
3791 }
3792
3793 if (ctrl_info->max_oq_element_length <
3794 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
3795 dev_err(&ctrl_info->pci_dev->dev,
3796 "max. outbound queue element length of %d is less than the required length of %d\n",
3797 ctrl_info->max_oq_element_length,
3798 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
3799 return -EINVAL;
3800 }
3801
3802 if (ctrl_info->max_inbound_iu_length_per_firmware <
3803 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
3804 dev_err(&ctrl_info->pci_dev->dev,
3805 "max. inbound IU length of %u is less than the min. required length of %d\n",
3806 ctrl_info->max_inbound_iu_length_per_firmware,
3807 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3808 return -EINVAL;
3809 }
3810
77668f41
KB		 3811 if (!ctrl_info->inbound_spanning_supported) {
3812 dev_err(&ctrl_info->pci_dev->dev,
3813 "the controller does not support inbound spanning\n");
3814 return -EINVAL;
3815 }
3816
3817 if (ctrl_info->outbound_spanning_supported) {
3818 dev_err(&ctrl_info->pci_dev->dev,
3819 "the controller supports outbound spanning but this driver does not\n");
3820 return -EINVAL;
3821 }
3822
6c223761
KB		 3823 return 0;
3824}
3825
3826static int pqi_delete_operational_queue(struct pqi_ctrl_info *ctrl_info,
3827 bool inbound_queue, u16 queue_id)
3828{
3829 struct pqi_general_admin_request request;
3830 struct pqi_general_admin_response response;
3831
3832 memset(&request, 0, sizeof(request));
3833 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3834 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3835 &request.header.iu_length);
3836 if (inbound_queue)
3837 request.function_code =
3838 PQI_GENERAL_ADMIN_FUNCTION_DELETE_IQ;
3839 else
3840 request.function_code =
3841 PQI_GENERAL_ADMIN_FUNCTION_DELETE_OQ;
3842 put_unaligned_le16(queue_id,
3843 &request.data.delete_operational_queue.queue_id);
3844
3845 return pqi_submit_admin_request_synchronous(ctrl_info, &request,
3846 &response);
3847}
3848
3849static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
3850{
3851 int rc;
3852 struct pqi_event_queue *event_queue;
3853 struct pqi_general_admin_request request;
3854 struct pqi_general_admin_response response;
3855
3856 event_queue = &ctrl_info->event_queue;
3857
3858 /*
3859 * Create OQ (Outbound Queue - device to host queue) to dedicate
3860 * to events.
3861 */
3862 memset(&request, 0, sizeof(request));
3863 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3864 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3865 &request.header.iu_length);
3866 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
3867 put_unaligned_le16(event_queue->oq_id,
3868 &request.data.create_operational_oq.queue_id);
3869 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
3870 &request.data.create_operational_oq.element_array_addr);
3871 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
3872 &request.data.create_operational_oq.pi_addr);
3873 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
3874 &request.data.create_operational_oq.num_elements);
3875 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
3876 &request.data.create_operational_oq.element_length);
3877 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
3878 put_unaligned_le16(event_queue->int_msg_num,
3879 &request.data.create_operational_oq.int_msg_num);
3880
3881 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3882 &response);
3883 if (rc)
3884 return rc;
3885
3886 event_queue->oq_ci = ctrl_info->iomem_base +
3887 PQI_DEVICE_REGISTERS_OFFSET +
3888 get_unaligned_le64(
3889 &response.data.create_operational_oq.oq_ci_offset);
3890
3891 return 0;
3892}
3893
061ef06a
KB		 3894static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
3895 unsigned int group_number)
6c223761 3896{
6c223761
KB		 3897 int rc;
3898 struct pqi_queue_group *queue_group;
3899 struct pqi_general_admin_request request;
3900 struct pqi_general_admin_response response;
3901
061ef06a 3902 queue_group = &ctrl_info->queue_groups[group_number];
6c223761
KB		 3903
3904 /*
3905 * Create IQ (Inbound Queue - host to device queue) for
3906 * RAID path.
3907 */
3908 memset(&request, 0, sizeof(request));
3909 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3910 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3911 &request.header.iu_length);
3912 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
3913 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
3914 &request.data.create_operational_iq.queue_id);
3915 put_unaligned_le64(
3916 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
3917 &request.data.create_operational_iq.element_array_addr);
3918 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
3919 &request.data.create_operational_iq.ci_addr);
3920 put_unaligned_le16(ctrl_info->num_elements_per_iq,
3921 &request.data.create_operational_iq.num_elements);
3922 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
3923 &request.data.create_operational_iq.element_length);
3924 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
3925
3926 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3927 &response);
3928 if (rc) {
3929 dev_err(&ctrl_info->pci_dev->dev,
3930 "error creating inbound RAID queue\n");
3931 return rc;
3932 }
3933
3934 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
3935 PQI_DEVICE_REGISTERS_OFFSET +
3936 get_unaligned_le64(
3937 &response.data.create_operational_iq.iq_pi_offset);
3938
3939 /*
3940 * Create IQ (Inbound Queue - host to device queue) for
3941 * Advanced I/O (AIO) path.
3942 */
3943 memset(&request, 0, sizeof(request));
3944 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3945 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3946 &request.header.iu_length);
3947 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
3948 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
3949 &request.data.create_operational_iq.queue_id);
3950 put_unaligned_le64((u64)queue_group->
3951 iq_element_array_bus_addr[AIO_PATH],
3952 &request.data.create_operational_iq.element_array_addr);
3953 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
3954 &request.data.create_operational_iq.ci_addr);
3955 put_unaligned_le16(ctrl_info->num_elements_per_iq,
3956 &request.data.create_operational_iq.num_elements);
3957 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
3958 &request.data.create_operational_iq.element_length);
3959 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
3960
3961 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3962 &response);
3963 if (rc) {
3964 dev_err(&ctrl_info->pci_dev->dev,
3965 "error creating inbound AIO queue\n");
3966 goto delete_inbound_queue_raid;
3967 }
3968
3969 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
3970 PQI_DEVICE_REGISTERS_OFFSET +
3971 get_unaligned_le64(
3972 &response.data.create_operational_iq.iq_pi_offset);
3973
3974 /*
3975 * Designate the 2nd IQ as the AIO path. By default, all IQs are
3976 * assumed to be for RAID path I/O unless we change the queue's
3977 * property.
3978 */
3979 memset(&request, 0, sizeof(request));
3980 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
3981 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
3982 &request.header.iu_length);
3983 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
3984 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
3985 &request.data.change_operational_iq_properties.queue_id);
3986 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
3987 &request.data.change_operational_iq_properties.vendor_specific);
3988
3989 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
3990 &response);
3991 if (rc) {
3992 dev_err(&ctrl_info->pci_dev->dev,
3993 "error changing queue property\n");
3994 goto delete_inbound_queue_aio;
3995 }
3996
3997 /*
3998 * Create OQ (Outbound Queue - device to host queue).
3999 */
4000 memset(&request, 0, sizeof(request));
4001 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4002 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4003 &request.header.iu_length);
4004 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4005 put_unaligned_le16(queue_group->oq_id,
4006 &request.data.create_operational_oq.queue_id);
4007 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4008 &request.data.create_operational_oq.element_array_addr);
4009 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4010 &request.data.create_operational_oq.pi_addr);
4011 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4012 &request.data.create_operational_oq.num_elements);
4013 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4014 &request.data.create_operational_oq.element_length);
4015 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4016 put_unaligned_le16(queue_group->int_msg_num,
4017 &request.data.create_operational_oq.int_msg_num);
4018
4019 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4020 &response);
4021 if (rc) {
4022 dev_err(&ctrl_info->pci_dev->dev,
4023 "error creating outbound queue\n");
4024 goto delete_inbound_queue_aio;
4025 }
4026
4027 queue_group->oq_ci = ctrl_info->iomem_base +
4028 PQI_DEVICE_REGISTERS_OFFSET +
4029 get_unaligned_le64(
4030 &response.data.create_operational_oq.oq_ci_offset);
4031
6c223761
KB		 4032 return 0;
4033
4034delete_inbound_queue_aio:
4035 pqi_delete_operational_queue(ctrl_info, true,
4036 queue_group->iq_id[AIO_PATH]);
4037
4038delete_inbound_queue_raid:
4039 pqi_delete_operational_queue(ctrl_info, true,
4040 queue_group->iq_id[RAID_PATH]);
4041
4042 return rc;
4043}
4044
4045static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4046{
4047 int rc;
4048 unsigned int i;
4049
4050 rc = pqi_create_event_queue(ctrl_info);
4051 if (rc) {
4052 dev_err(&ctrl_info->pci_dev->dev,
4053 "error creating event queue\n");
4054 return rc;
4055 }
4056
4057 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
061ef06a 4058 rc = pqi_create_queue_group(ctrl_info, i);
6c223761
KB		 4059 if (rc) {
4060 dev_err(&ctrl_info->pci_dev->dev,
4061 "error creating queue group number %u/%u\n",
4062 i, ctrl_info->num_queue_groups);
4063 return rc;
4064 }
4065 }
4066
4067 return 0;
4068}
4069
4070#define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4071 (offsetof(struct pqi_event_config, descriptors) + \
4072 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4073
6a50d6ad
KB		 4074static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4075 bool enable_events)
6c223761
KB		 4076{
4077 int rc;
4078 unsigned int i;
4079 struct pqi_event_config *event_config;
6a50d6ad 4080 struct pqi_event_descriptor *event_descriptor;
6c223761
KB		 4081 struct pqi_general_management_request request;
4082
4083 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4084 GFP_KERNEL);
4085 if (!event_config)
4086 return -ENOMEM;
4087
4088 memset(&request, 0, sizeof(request));
4089
4090 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4091 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4092 data.report_event_configuration.sg_descriptors[1]) -
4093 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4094 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4095 &request.data.report_event_configuration.buffer_length);
4096
4097 rc = pqi_map_single(ctrl_info->pci_dev,
4098 request.data.report_event_configuration.sg_descriptors,
4099 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4100 PCI_DMA_FROMDEVICE);
4101 if (rc)
4102 goto out;
4103
4104 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4105 0, NULL, NO_TIMEOUT);
4106
4107 pqi_pci_unmap(ctrl_info->pci_dev,
4108 request.data.report_event_configuration.sg_descriptors, 1,
4109 PCI_DMA_FROMDEVICE);
4110
4111 if (rc)
4112 goto out;
4113
6a50d6ad
KB		 4114 for (i = 0; i < event_config->num_event_descriptors; i++) {
4115 event_descriptor = &event_config->descriptors[i];
4116 if (enable_events &&
4117 pqi_is_supported_event(event_descriptor->event_type))
4118 put_unaligned_le16(ctrl_info->event_queue.oq_id,
4119 &event_descriptor->oq_id);
4120 else
4121 put_unaligned_le16(0, &event_descriptor->oq_id);
4122 }
6c223761
KB		 4123
4124 memset(&request, 0, sizeof(request));
4125
4126 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4127 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4128 data.report_event_configuration.sg_descriptors[1]) -
4129 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4130 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4131 &request.data.report_event_configuration.buffer_length);
4132
4133 rc = pqi_map_single(ctrl_info->pci_dev,
4134 request.data.report_event_configuration.sg_descriptors,
4135 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4136 PCI_DMA_TODEVICE);
4137 if (rc)
4138 goto out;
4139
4140 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4141 NULL, NO_TIMEOUT);
4142
4143 pqi_pci_unmap(ctrl_info->pci_dev,
4144 request.data.report_event_configuration.sg_descriptors, 1,
4145 PCI_DMA_TODEVICE);
4146
4147out:
4148 kfree(event_config);
4149
4150 return rc;
4151}
4152
6a50d6ad
KB		 4153static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4154{
4155 return pqi_configure_events(ctrl_info, true);
4156}
4157
4158static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4159{
4160 return pqi_configure_events(ctrl_info, false);
4161}
4162
6c223761
KB		 4163static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4164{
4165 unsigned int i;
4166 struct device *dev;
4167 size_t sg_chain_buffer_length;
4168 struct pqi_io_request *io_request;
4169
4170 if (!ctrl_info->io_request_pool)
4171 return;
4172
4173 dev = &ctrl_info->pci_dev->dev;
4174 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4175 io_request = ctrl_info->io_request_pool;
4176
4177 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4178 kfree(io_request->iu);
4179 if (!io_request->sg_chain_buffer)
4180 break;
4181 dma_free_coherent(dev, sg_chain_buffer_length,
4182 io_request->sg_chain_buffer,
4183 io_request->sg_chain_buffer_dma_handle);
4184 io_request++;
4185 }
4186
4187 kfree(ctrl_info->io_request_pool);
4188 ctrl_info->io_request_pool = NULL;
4189}
4190
4191static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4192{
4193 ctrl_info->error_buffer = dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
4194 ctrl_info->error_buffer_length,
4195 &ctrl_info->error_buffer_dma_handle, GFP_KERNEL);
4196
4197 if (!ctrl_info->error_buffer)
4198 return -ENOMEM;
4199
4200 return 0;
4201}
4202
4203static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4204{
4205 unsigned int i;
4206 void *sg_chain_buffer;
4207 size_t sg_chain_buffer_length;
4208 dma_addr_t sg_chain_buffer_dma_handle;
4209 struct device *dev;
4210 struct pqi_io_request *io_request;
4211
4212 ctrl_info->io_request_pool = kzalloc(ctrl_info->max_io_slots *
4213 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
4214
4215 if (!ctrl_info->io_request_pool) {
4216 dev_err(&ctrl_info->pci_dev->dev,
4217 "failed to allocate I/O request pool\n");
4218 goto error;
4219 }
4220
4221 dev = &ctrl_info->pci_dev->dev;
4222 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4223 io_request = ctrl_info->io_request_pool;
4224
4225 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4226 io_request->iu =
4227 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
4228
4229 if (!io_request->iu) {
4230 dev_err(&ctrl_info->pci_dev->dev,
4231 "failed to allocate IU buffers\n");
4232 goto error;
4233 }
4234
4235 sg_chain_buffer = dma_alloc_coherent(dev,
4236 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4237 GFP_KERNEL);
4238
4239 if (!sg_chain_buffer) {
4240 dev_err(&ctrl_info->pci_dev->dev,
4241 "failed to allocate PQI scatter-gather chain buffers\n");
4242 goto error;
4243 }
4244
4245 io_request->index = i;
4246 io_request->sg_chain_buffer = sg_chain_buffer;
4247 io_request->sg_chain_buffer_dma_handle =
4248 sg_chain_buffer_dma_handle;
4249 io_request++;
4250 }
4251
4252 return 0;
4253
4254error:
4255 pqi_free_all_io_requests(ctrl_info);
4256
4257 return -ENOMEM;
4258}
4259
4260/*
4261 * Calculate required resources that are sized based on max. outstanding
4262 * requests and max. transfer size.
4263 */
4264
4265static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4266{
4267 u32 max_transfer_size;
4268 u32 max_sg_entries;
4269
4270 ctrl_info->scsi_ml_can_queue =
4271 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4272 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4273
4274 ctrl_info->error_buffer_length =
4275 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4276
d727a776
KB		 4277 if (reset_devices)
4278 max_transfer_size = min(ctrl_info->max_transfer_size,
4279 PQI_MAX_TRANSFER_SIZE_KDUMP);
4280 else
4281 max_transfer_size = min(ctrl_info->max_transfer_size,
4282 PQI_MAX_TRANSFER_SIZE);
6c223761
KB		 4283
4284 max_sg_entries = max_transfer_size / PAGE_SIZE;
4285
4286 /* +1 to cover when the buffer is not page-aligned. */
4287 max_sg_entries++;
4288
4289 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4290
4291 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4292
4293 ctrl_info->sg_chain_buffer_length =
e1d213bd
KB		 4294 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4295 PQI_EXTRA_SGL_MEMORY;
6c223761
KB		 4296 ctrl_info->sg_tablesize = max_sg_entries;
4297 ctrl_info->max_sectors = max_transfer_size / 512;
4298}
4299
4300static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4301{
6c223761
KB		 4302 int num_queue_groups;
4303 u16 num_elements_per_iq;
4304 u16 num_elements_per_oq;
4305
d727a776
KB		 4306 if (reset_devices) {
4307 num_queue_groups = 1;
4308 } else {
4309 int num_cpus;
4310 int max_queue_groups;
4311
4312 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4313 ctrl_info->max_outbound_queues - 1);
4314 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
6c223761 4315
d727a776
KB		 4316 num_cpus = num_online_cpus();
4317 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4318 num_queue_groups = min(num_queue_groups, max_queue_groups);
4319 }
6c223761
KB		 4320
4321 ctrl_info->num_queue_groups = num_queue_groups;
061ef06a 4322 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
6c223761 4323
77668f41
KB		 4324 /*
4325 * Make sure that the max. inbound IU length is an even multiple
4326 * of our inbound element length.
4327 */
4328 ctrl_info->max_inbound_iu_length =
4329 (ctrl_info->max_inbound_iu_length_per_firmware /
4330 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4331 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
6c223761
KB		 4332
4333 num_elements_per_iq =
4334 (ctrl_info->max_inbound_iu_length /
4335 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4336
4337 /* Add one because one element in each queue is unusable. */
4338 num_elements_per_iq++;
4339
4340 num_elements_per_iq = min(num_elements_per_iq,
4341 ctrl_info->max_elements_per_iq);
4342
4343 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4344 num_elements_per_oq = min(num_elements_per_oq,
4345 ctrl_info->max_elements_per_oq);
4346
4347 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4348 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4349
4350 ctrl_info->max_sg_per_iu =
4351 ((ctrl_info->max_inbound_iu_length -
4352 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4353 sizeof(struct pqi_sg_descriptor)) +
4354 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
4355}
4356
4357static inline void pqi_set_sg_descriptor(
4358 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg)
4359{
4360 u64 address = (u64)sg_dma_address(sg);
4361 unsigned int length = sg_dma_len(sg);
4362
4363 put_unaligned_le64(address, &sg_descriptor->address);
4364 put_unaligned_le32(length, &sg_descriptor->length);
4365 put_unaligned_le32(0, &sg_descriptor->flags);
4366}
4367
4368static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
4369 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
4370 struct pqi_io_request *io_request)
4371{
4372 int i;
4373 u16 iu_length;
4374 int sg_count;
4375 bool chained;
4376 unsigned int num_sg_in_iu;
4377 unsigned int max_sg_per_iu;
4378 struct scatterlist *sg;
4379 struct pqi_sg_descriptor *sg_descriptor;
4380
4381 sg_count = scsi_dma_map(scmd);
4382 if (sg_count < 0)
4383 return sg_count;
4384
4385 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
4386 PQI_REQUEST_HEADER_LENGTH;
4387
4388 if (sg_count == 0)
4389 goto out;
4390
4391 sg = scsi_sglist(scmd);
4392 sg_descriptor = request->sg_descriptors;
4393 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4394 chained = false;
4395 num_sg_in_iu = 0;
4396 i = 0;
4397
4398 while (1) {
4399 pqi_set_sg_descriptor(sg_descriptor, sg);
4400 if (!chained)
4401 num_sg_in_iu++;
4402 i++;
4403 if (i == sg_count)
4404 break;
4405 sg_descriptor++;
4406 if (i == max_sg_per_iu) {
4407 put_unaligned_le64(
4408 (u64)io_request->sg_chain_buffer_dma_handle,
4409 &sg_descriptor->address);
4410 put_unaligned_le32((sg_count - num_sg_in_iu)
4411 * sizeof(*sg_descriptor),
4412 &sg_descriptor->length);
4413 put_unaligned_le32(CISS_SG_CHAIN,
4414 &sg_descriptor->flags);
4415 chained = true;
4416 num_sg_in_iu++;
4417 sg_descriptor = io_request->sg_chain_buffer;
4418 }
4419 sg = sg_next(sg);
4420 }
4421
4422 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4423 request->partial = chained;
4424 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4425
4426out:
4427 put_unaligned_le16(iu_length, &request->header.iu_length);
4428
4429 return 0;
4430}
4431
4432static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
4433 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
4434 struct pqi_io_request *io_request)
4435{
4436 int i;
4437 u16 iu_length;
4438 int sg_count;
a60eec02
KB		 4439 bool chained;
4440 unsigned int num_sg_in_iu;
4441 unsigned int max_sg_per_iu;
6c223761
KB		 4442 struct scatterlist *sg;
4443 struct pqi_sg_descriptor *sg_descriptor;
4444
4445 sg_count = scsi_dma_map(scmd);
4446 if (sg_count < 0)
4447 return sg_count;
a60eec02
KB		 4448
4449 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
4450 PQI_REQUEST_HEADER_LENGTH;
4451 num_sg_in_iu = 0;
4452
6c223761
KB		 4453 if (sg_count == 0)
4454 goto out;
4455
a60eec02
KB		 4456 sg = scsi_sglist(scmd);
4457 sg_descriptor = request->sg_descriptors;
4458 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4459 chained = false;
4460 i = 0;
4461
4462 while (1) {
4463 pqi_set_sg_descriptor(sg_descriptor, sg);
4464 if (!chained)
4465 num_sg_in_iu++;
4466 i++;
4467 if (i == sg_count)
4468 break;
4469 sg_descriptor++;
4470 if (i == max_sg_per_iu) {
4471 put_unaligned_le64(
4472 (u64)io_request->sg_chain_buffer_dma_handle,
4473 &sg_descriptor->address);
4474 put_unaligned_le32((sg_count - num_sg_in_iu)
4475 * sizeof(*sg_descriptor),
4476 &sg_descriptor->length);
4477 put_unaligned_le32(CISS_SG_CHAIN,
4478 &sg_descriptor->flags);
4479 chained = true;
4480 num_sg_in_iu++;
4481 sg_descriptor = io_request->sg_chain_buffer;
6c223761 4482 }
a60eec02 4483 sg = sg_next(sg);
6c223761
KB		 4484 }
4485
a60eec02
KB		 4486 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4487 request->partial = chained;
6c223761 4488 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
a60eec02
KB		 4489
4490out:
6c223761
KB		 4491 put_unaligned_le16(iu_length, &request->header.iu_length);
4492 request->num_sg_descriptors = num_sg_in_iu;
4493
4494 return 0;
4495}
4496
4497static void pqi_raid_io_complete(struct pqi_io_request *io_request,
4498 void *context)
4499{
4500 struct scsi_cmnd *scmd;
4501
4502 scmd = io_request->scmd;
4503 pqi_free_io_request(io_request);
4504 scsi_dma_unmap(scmd);
4505 pqi_scsi_done(scmd);
4506}
4507
376fb880
KB		 4508static int pqi_raid_submit_scsi_cmd_with_io_request(
4509 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
6c223761
KB		 4510 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4511 struct pqi_queue_group *queue_group)
4512{
4513 int rc;
4514 size_t cdb_length;
6c223761
KB		 4515 struct pqi_raid_path_request *request;
4516
6c223761
KB		 4517 io_request->io_complete_callback = pqi_raid_io_complete;
4518 io_request->scmd = scmd;
4519
6c223761
KB		 4520 request = io_request->iu;
4521 memset(request, 0,
4522 offsetof(struct pqi_raid_path_request, sg_descriptors));
4523
4524 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
4525 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4526 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4527 put_unaligned_le16(io_request->index, &request->request_id);
4528 request->error_index = request->request_id;
4529 memcpy(request->lun_number, device->scsi3addr,
4530 sizeof(request->lun_number));
4531
4532 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
4533 memcpy(request->cdb, scmd->cmnd, cdb_length);
4534
4535 switch (cdb_length) {
4536 case 6:
4537 case 10:
4538 case 12:
4539 case 16:
4540 /* No bytes in the Additional CDB bytes field */
4541 request->additional_cdb_bytes_usage =
4542 SOP_ADDITIONAL_CDB_BYTES_0;
4543 break;
4544 case 20:
4545 /* 4 bytes in the Additional cdb field */
4546 request->additional_cdb_bytes_usage =
4547 SOP_ADDITIONAL_CDB_BYTES_4;
4548 break;
4549 case 24:
4550 /* 8 bytes in the Additional cdb field */
4551 request->additional_cdb_bytes_usage =
4552 SOP_ADDITIONAL_CDB_BYTES_8;
4553 break;
4554 case 28:
4555 /* 12 bytes in the Additional cdb field */
4556 request->additional_cdb_bytes_usage =
4557 SOP_ADDITIONAL_CDB_BYTES_12;
4558 break;
4559 case 32:
4560 default:
4561 /* 16 bytes in the Additional cdb field */
4562 request->additional_cdb_bytes_usage =
4563 SOP_ADDITIONAL_CDB_BYTES_16;
4564 break;
4565 }
4566
4567 switch (scmd->sc_data_direction) {
4568 case DMA_TO_DEVICE:
4569 request->data_direction = SOP_READ_FLAG;
4570 break;
4571 case DMA_FROM_DEVICE:
4572 request->data_direction = SOP_WRITE_FLAG;
4573 break;
4574 case DMA_NONE:
4575 request->data_direction = SOP_NO_DIRECTION_FLAG;
4576 break;
4577 case DMA_BIDIRECTIONAL:
4578 request->data_direction = SOP_BIDIRECTIONAL;
4579 break;
4580 default:
4581 dev_err(&ctrl_info->pci_dev->dev,
4582 "unknown data direction: %d\n",
4583 scmd->sc_data_direction);
6c223761
KB		 4584 break;
4585 }
4586
4587 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
4588 if (rc) {
4589 pqi_free_io_request(io_request);
4590 return SCSI_MLQUEUE_HOST_BUSY;
4591 }
4592
4593 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
4594
4595 return 0;
4596}
4597
376fb880
KB		 4598static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
4599 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4600 struct pqi_queue_group *queue_group)
4601{
4602 struct pqi_io_request *io_request;
4603
4604 io_request = pqi_alloc_io_request(ctrl_info);
4605
4606 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
4607 device, scmd, queue_group);
4608}
4609
4610static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
4611{
4612 if (!pqi_ctrl_blocked(ctrl_info))
4613 schedule_work(&ctrl_info->raid_bypass_retry_work);
4614}
4615
4616static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
4617{
4618 struct scsi_cmnd *scmd;
03b288cf 4619 struct pqi_scsi_dev *device;
376fb880
KB		 4620 struct pqi_ctrl_info *ctrl_info;
4621
4622 if (!io_request->raid_bypass)
4623 return false;
4624
4625 scmd = io_request->scmd;
4626 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
4627 return false;
4628 if (host_byte(scmd->result) == DID_NO_CONNECT)
4629 return false;
4630
03b288cf
KB		 4631 device = scmd->device->hostdata;
4632 if (pqi_device_offline(device))
4633 return false;
4634
376fb880
KB		 4635 ctrl_info = shost_to_hba(scmd->device->host);
4636 if (pqi_ctrl_offline(ctrl_info))
4637 return false;
4638
4639 return true;
4640}
4641
4642static inline void pqi_add_to_raid_bypass_retry_list(
4643 struct pqi_ctrl_info *ctrl_info,
4644 struct pqi_io_request *io_request, bool at_head)
4645{
4646 unsigned long flags;
4647
4648 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4649 if (at_head)
4650 list_add(&io_request->request_list_entry,
4651 &ctrl_info->raid_bypass_retry_list);
4652 else
4653 list_add_tail(&io_request->request_list_entry,
4654 &ctrl_info->raid_bypass_retry_list);
4655 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4656}
4657
4658static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
4659 void *context)
4660{
4661 struct scsi_cmnd *scmd;
4662
4663 scmd = io_request->scmd;
4664 pqi_free_io_request(io_request);
4665 pqi_scsi_done(scmd);
4666}
4667
4668static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
4669{
4670 struct scsi_cmnd *scmd;
4671 struct pqi_ctrl_info *ctrl_info;
4672
4673 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
4674 scmd = io_request->scmd;
4675 scmd->result = 0;
4676 ctrl_info = shost_to_hba(scmd->device->host);
4677
4678 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
4679 pqi_schedule_bypass_retry(ctrl_info);
4680}
4681
4682static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
4683{
4684 struct scsi_cmnd *scmd;
4685 struct pqi_scsi_dev *device;
4686 struct pqi_ctrl_info *ctrl_info;
4687 struct pqi_queue_group *queue_group;
4688
4689 scmd = io_request->scmd;
4690 device = scmd->device->hostdata;
4691 if (pqi_device_in_reset(device)) {
4692 pqi_free_io_request(io_request);
4693 set_host_byte(scmd, DID_RESET);
4694 pqi_scsi_done(scmd);
4695 return 0;
4696 }
4697
4698 ctrl_info = shost_to_hba(scmd->device->host);
4699 queue_group = io_request->queue_group;
4700
4701 pqi_reinit_io_request(io_request);
4702
4703 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
4704 device, scmd, queue_group);
4705}
4706
4707static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
4708 struct pqi_ctrl_info *ctrl_info)
4709{
4710 unsigned long flags;
4711 struct pqi_io_request *io_request;
4712
4713 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
4714 io_request = list_first_entry_or_null(
4715 &ctrl_info->raid_bypass_retry_list,
4716 struct pqi_io_request, request_list_entry);
4717 if (io_request)
4718 list_del(&io_request->request_list_entry);
4719 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4720
4721 return io_request;
4722}
4723
4724static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
4725{
4726 int rc;
4727 struct pqi_io_request *io_request;
4728
4729 pqi_ctrl_busy(ctrl_info);
4730
4731 while (1) {
4732 if (pqi_ctrl_blocked(ctrl_info))
4733 break;
4734 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
4735 if (!io_request)
4736 break;
4737 rc = pqi_retry_raid_bypass(io_request);
4738 if (rc) {
4739 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
4740 true);
4741 pqi_schedule_bypass_retry(ctrl_info);
4742 break;
4743 }
4744 }
4745
4746 pqi_ctrl_unbusy(ctrl_info);
4747}
4748
4749static void pqi_raid_bypass_retry_worker(struct work_struct *work)
4750{
4751 struct pqi_ctrl_info *ctrl_info;
4752
4753 ctrl_info = container_of(work, struct pqi_ctrl_info,
4754 raid_bypass_retry_work);
4755 pqi_retry_raid_bypass_requests(ctrl_info);
4756}
4757
5f310425
KB		 4758static void pqi_clear_all_queued_raid_bypass_retries(
4759 struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 4760{
4761 unsigned long flags;
376fb880
KB		 4762
4763 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5f310425 4764 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
376fb880
KB		 4765 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
4766}
4767
6c223761
KB		 4768static void pqi_aio_io_complete(struct pqi_io_request *io_request,
4769 void *context)
4770{
4771 struct scsi_cmnd *scmd;
4772
4773 scmd = io_request->scmd;
4774 scsi_dma_unmap(scmd);
4775 if (io_request->status == -EAGAIN)
4776 set_host_byte(scmd, DID_IMM_RETRY);
376fb880
KB		 4777 else if (pqi_raid_bypass_retry_needed(io_request)) {
4778 pqi_queue_raid_bypass_retry(io_request);
4779 return;
4780 }
6c223761
KB		 4781 pqi_free_io_request(io_request);
4782 pqi_scsi_done(scmd);
4783}
4784
4785static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
4786 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4787 struct pqi_queue_group *queue_group)
4788{
4789 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
376fb880 4790 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
6c223761
KB		 4791}
4792
4793static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
4794 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
4795 unsigned int cdb_length, struct pqi_queue_group *queue_group,
376fb880 4796 struct pqi_encryption_info *encryption_info, bool raid_bypass)
6c223761
KB		 4797{
4798 int rc;
4799 struct pqi_io_request *io_request;
4800 struct pqi_aio_path_request *request;
4801
4802 io_request = pqi_alloc_io_request(ctrl_info);
4803 io_request->io_complete_callback = pqi_aio_io_complete;
4804 io_request->scmd = scmd;
376fb880 4805 io_request->raid_bypass = raid_bypass;
6c223761
KB		 4806
4807 request = io_request->iu;
4808 memset(request, 0,
4809 offsetof(struct pqi_raid_path_request, sg_descriptors));
4810
4811 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
4812 put_unaligned_le32(aio_handle, &request->nexus_id);
4813 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4814 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4815 put_unaligned_le16(io_request->index, &request->request_id);
4816 request->error_index = request->request_id;
4817 if (cdb_length > sizeof(request->cdb))
4818 cdb_length = sizeof(request->cdb);
4819 request->cdb_length = cdb_length;
4820 memcpy(request->cdb, cdb, cdb_length);
4821
4822 switch (scmd->sc_data_direction) {
4823 case DMA_TO_DEVICE:
4824 request->data_direction = SOP_READ_FLAG;
4825 break;
4826 case DMA_FROM_DEVICE:
4827 request->data_direction = SOP_WRITE_FLAG;
4828 break;
4829 case DMA_NONE:
4830 request->data_direction = SOP_NO_DIRECTION_FLAG;
4831 break;
4832 case DMA_BIDIRECTIONAL:
4833 request->data_direction = SOP_BIDIRECTIONAL;
4834 break;
4835 default:
4836 dev_err(&ctrl_info->pci_dev->dev,
4837 "unknown data direction: %d\n",
4838 scmd->sc_data_direction);
6c223761
KB		 4839 break;
4840 }
4841
4842 if (encryption_info) {
4843 request->encryption_enable = true;
4844 put_unaligned_le16(encryption_info->data_encryption_key_index,
4845 &request->data_encryption_key_index);
4846 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
4847 &request->encrypt_tweak_lower);
4848 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
4849 &request->encrypt_tweak_upper);
4850 }
4851
4852 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
4853 if (rc) {
4854 pqi_free_io_request(io_request);
4855 return SCSI_MLQUEUE_HOST_BUSY;
4856 }
4857
4858 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
4859
4860 return 0;
4861}
4862
061ef06a
KB		 4863static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
4864 struct scsi_cmnd *scmd)
4865{
4866 u16 hw_queue;
4867
4868 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
4869 if (hw_queue > ctrl_info->max_hw_queue_index)
4870 hw_queue = 0;
4871
4872 return hw_queue;
4873}
4874
7561a7e4
KB		 4875/*
4876 * This function gets called just before we hand the completed SCSI request
4877 * back to the SML.
4878 */
4879
4880void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
4881{
4882 struct pqi_scsi_dev *device;
4883
4884 device = scmd->device->hostdata;
4885 atomic_dec(&device->scsi_cmds_outstanding);
4886}
4887
6c223761 4888static int pqi_scsi_queue_command(struct Scsi_Host *shost,
7d81d2b8 4889 struct scsi_cmnd *scmd)
6c223761
KB		 4890{
4891 int rc;
4892 struct pqi_ctrl_info *ctrl_info;
4893 struct pqi_scsi_dev *device;
061ef06a 4894 u16 hw_queue;
6c223761
KB		 4895 struct pqi_queue_group *queue_group;
4896 bool raid_bypassed;
4897
4898 device = scmd->device->hostdata;
6c223761
KB		 4899 ctrl_info = shost_to_hba(shost);
4900
7561a7e4
KB		 4901 atomic_inc(&device->scsi_cmds_outstanding);
4902
6c223761
KB		 4903 if (pqi_ctrl_offline(ctrl_info)) {
4904 set_host_byte(scmd, DID_NO_CONNECT);
4905 pqi_scsi_done(scmd);
4906 return 0;
4907 }
4908
7561a7e4
KB		 4909 pqi_ctrl_busy(ctrl_info);
4910 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device)) {
4911 rc = SCSI_MLQUEUE_HOST_BUSY;
4912 goto out;
4913 }
4914
7d81d2b8
KB		 4915 /*
4916 * This is necessary because the SML doesn't zero out this field during
4917 * error recovery.
4918 */
4919 scmd->result = 0;
4920
061ef06a
KB		 4921 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
4922 queue_group = &ctrl_info->queue_groups[hw_queue];
6c223761
KB		 4923
4924 if (pqi_is_logical_device(device)) {
4925 raid_bypassed = false;
4926 if (device->offload_enabled &&
57292b58 4927 !blk_rq_is_passthrough(scmd->request)) {
6c223761
KB		 4928 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
4929 scmd, queue_group);
376fb880
KB		 4930 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
4931 raid_bypassed = true;
6c223761
KB		 4932 }
4933 if (!raid_bypassed)
4934 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
4935 queue_group);
4936 } else {
4937 if (device->aio_enabled)
4938 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd,
4939 queue_group);
4940 else
4941 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
4942 queue_group);
4943 }
4944
7561a7e4
KB		 4945out:
4946 pqi_ctrl_unbusy(ctrl_info);
4947 if (rc)
4948 atomic_dec(&device->scsi_cmds_outstanding);
4949
6c223761
KB		 4950 return rc;
4951}
4952
7561a7e4
KB		 4953static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
4954 struct pqi_queue_group *queue_group)
4955{
4956 unsigned int path;
4957 unsigned long flags;
4958 bool list_is_empty;
4959
4960 for (path = 0; path < 2; path++) {
4961 while (1) {
4962 spin_lock_irqsave(
4963 &queue_group->submit_lock[path], flags);
4964 list_is_empty =
4965 list_empty(&queue_group->request_list[path]);
4966 spin_unlock_irqrestore(
4967 &queue_group->submit_lock[path], flags);
4968 if (list_is_empty)
4969 break;
4970 pqi_check_ctrl_health(ctrl_info);
4971 if (pqi_ctrl_offline(ctrl_info))
4972 return -ENXIO;
4973 usleep_range(1000, 2000);
4974 }
4975 }
4976
4977 return 0;
4978}
4979
4980static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
4981{
4982 int rc;
4983 unsigned int i;
4984 unsigned int path;
4985 struct pqi_queue_group *queue_group;
4986 pqi_index_t iq_pi;
4987 pqi_index_t iq_ci;
4988
4989 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4990 queue_group = &ctrl_info->queue_groups[i];
4991
4992 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
4993 if (rc)
4994 return rc;
4995
4996 for (path = 0; path < 2; path++) {
4997 iq_pi = queue_group->iq_pi_copy[path];
4998
4999 while (1) {
5000 iq_ci = *queue_group->iq_ci[path];
5001 if (iq_ci == iq_pi)
5002 break;
5003 pqi_check_ctrl_health(ctrl_info);
5004 if (pqi_ctrl_offline(ctrl_info))
5005 return -ENXIO;
5006 usleep_range(1000, 2000);
5007 }
5008 }
5009 }
5010
5011 return 0;
5012}
5013
5014static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5015 struct pqi_scsi_dev *device)
5016{
5017 unsigned int i;
5018 unsigned int path;
5019 struct pqi_queue_group *queue_group;
5020 unsigned long flags;
5021 struct pqi_io_request *io_request;
5022 struct pqi_io_request *next;
5023 struct scsi_cmnd *scmd;
5024 struct pqi_scsi_dev *scsi_device;
5025
5026 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5027 queue_group = &ctrl_info->queue_groups[i];
5028
5029 for (path = 0; path < 2; path++) {
5030 spin_lock_irqsave(
5031 &queue_group->submit_lock[path], flags);
5032
5033 list_for_each_entry_safe(io_request, next,
5034 &queue_group->request_list[path],
5035 request_list_entry) {
5036 scmd = io_request->scmd;
5037 if (!scmd)
5038 continue;
5039
5040 scsi_device = scmd->device->hostdata;
5041 if (scsi_device != device)
5042 continue;
5043
5044 list_del(&io_request->request_list_entry);
5045 set_host_byte(scmd, DID_RESET);
5046 pqi_scsi_done(scmd);
5047 }
5048
5049 spin_unlock_irqrestore(
5050 &queue_group->submit_lock[path], flags);
5051 }
5052 }
5053}
5054
061ef06a
KB		 5055static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5056 struct pqi_scsi_dev *device)
5057{
5058 while (atomic_read(&device->scsi_cmds_outstanding)) {
5059 pqi_check_ctrl_health(ctrl_info);
5060 if (pqi_ctrl_offline(ctrl_info))
5061 return -ENXIO;
5062 usleep_range(1000, 2000);
5063 }
5064
5065 return 0;
5066}
5067
5068static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info)
5069{
5070 bool io_pending;
5071 unsigned long flags;
5072 struct pqi_scsi_dev *device;
5073
5074 while (1) {
5075 io_pending = false;
5076
5077 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5078 list_for_each_entry(device, &ctrl_info->scsi_device_list,
5079 scsi_device_list_entry) {
5080 if (atomic_read(&device->scsi_cmds_outstanding)) {
5081 io_pending = true;
5082 break;
5083 }
5084 }
5085 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5086 flags);
5087
5088 if (!io_pending)
5089 break;
5090
5091 pqi_check_ctrl_health(ctrl_info);
5092 if (pqi_ctrl_offline(ctrl_info))
5093 return -ENXIO;
5094
5095 usleep_range(1000, 2000);
5096 }
5097
5098 return 0;
5099}
5100
14bb215d
KB		 5101static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
5102 void *context)
6c223761 5103{
14bb215d 5104 struct completion *waiting = context;
6c223761 5105
14bb215d
KB		 5106 complete(waiting);
5107}
6c223761 5108
14bb215d
KB		 5109#define PQI_LUN_RESET_TIMEOUT_SECS 10
5110
5111static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
5112 struct pqi_scsi_dev *device, struct completion *wait)
5113{
5114 int rc;
14bb215d
KB		 5115
5116 while (1) {
5117 if (wait_for_completion_io_timeout(wait,
5118 PQI_LUN_RESET_TIMEOUT_SECS * HZ)) {
5119 rc = 0;
5120 break;
6c223761
KB		 5121 }
5122
14bb215d
KB		 5123 pqi_check_ctrl_health(ctrl_info);
5124 if (pqi_ctrl_offline(ctrl_info)) {
4e8415e3 5125 rc = -ENXIO;
14bb215d
KB		 5126 break;
5127 }
6c223761 5128 }
6c223761 5129
14bb215d 5130 return rc;
6c223761
KB		 5131}
5132
14bb215d 5133static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
6c223761
KB		 5134 struct pqi_scsi_dev *device)
5135{
5136 int rc;
5137 struct pqi_io_request *io_request;
5138 DECLARE_COMPLETION_ONSTACK(wait);
5139 struct pqi_task_management_request *request;
5140
6c223761 5141 io_request = pqi_alloc_io_request(ctrl_info);
14bb215d 5142 io_request->io_complete_callback = pqi_lun_reset_complete;
6c223761
KB		 5143 io_request->context = &wait;
5144
5145 request = io_request->iu;
5146 memset(request, 0, sizeof(*request));
5147
5148 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
5149 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
5150 &request->header.iu_length);
5151 put_unaligned_le16(io_request->index, &request->request_id);
5152 memcpy(request->lun_number, device->scsi3addr,
5153 sizeof(request->lun_number));
5154 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
5155
5156 pqi_start_io(ctrl_info,
5157 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
5158 io_request);
5159
14bb215d
KB		 5160 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
5161 if (rc == 0)
6c223761 5162 rc = io_request->status;
6c223761
KB		 5163
5164 pqi_free_io_request(io_request);
6c223761
KB		 5165
5166 return rc;
5167}
5168
5169/* Performs a reset at the LUN level. */
5170
5171static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5172 struct pqi_scsi_dev *device)
5173{
5174 int rc;
5175
14bb215d 5176 rc = pqi_lun_reset(ctrl_info, device);
061ef06a
KB		 5177 if (rc == 0)
5178 rc = pqi_device_wait_for_pending_io(ctrl_info, device);
6c223761 5179
14bb215d 5180 return rc == 0 ? SUCCESS : FAILED;
6c223761
KB		 5181}
5182
5183static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
5184{
5185 int rc;
7561a7e4 5186 struct Scsi_Host *shost;
6c223761
KB		 5187 struct pqi_ctrl_info *ctrl_info;
5188 struct pqi_scsi_dev *device;
5189
7561a7e4
KB		 5190 shost = scmd->device->host;
5191 ctrl_info = shost_to_hba(shost);
6c223761
KB		 5192 device = scmd->device->hostdata;
5193
5194 dev_err(&ctrl_info->pci_dev->dev,
5195 "resetting scsi %d:%d:%d:%d\n",
7561a7e4 5196 shost->host_no, device->bus, device->target, device->lun);
6c223761 5197
7561a7e4
KB		 5198 pqi_check_ctrl_health(ctrl_info);
5199 if (pqi_ctrl_offline(ctrl_info)) {
5200 rc = FAILED;
5201 goto out;
5202 }
6c223761 5203
7561a7e4
KB		 5204 mutex_lock(&ctrl_info->lun_reset_mutex);
5205
5206 pqi_ctrl_block_requests(ctrl_info);
5207 pqi_ctrl_wait_until_quiesced(ctrl_info);
5208 pqi_fail_io_queued_for_device(ctrl_info, device);
5209 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
5210 pqi_device_reset_start(device);
5211 pqi_ctrl_unblock_requests(ctrl_info);
5212
5213 if (rc)
5214 rc = FAILED;
5215 else
5216 rc = pqi_device_reset(ctrl_info, device);
5217
5218 pqi_device_reset_done(device);
5219
5220 mutex_unlock(&ctrl_info->lun_reset_mutex);
5221
5222out:
6c223761
KB		 5223 dev_err(&ctrl_info->pci_dev->dev,
5224 "reset of scsi %d:%d:%d:%d: %s\n",
7561a7e4 5225 shost->host_no, device->bus, device->target, device->lun,
6c223761
KB		 5226 rc == SUCCESS ? "SUCCESS" : "FAILED");
5227
5228 return rc;
5229}
5230
5231static int pqi_slave_alloc(struct scsi_device *sdev)
5232{
5233 struct pqi_scsi_dev *device;
5234 unsigned long flags;
5235 struct pqi_ctrl_info *ctrl_info;
5236 struct scsi_target *starget;
5237 struct sas_rphy *rphy;
5238
5239 ctrl_info = shost_to_hba(sdev->host);
5240
5241 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5242
5243 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
5244 starget = scsi_target(sdev);
5245 rphy = target_to_rphy(starget);
5246 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
5247 if (device) {
5248 device->target = sdev_id(sdev);
5249 device->lun = sdev->lun;
5250 device->target_lun_valid = true;
5251 }
5252 } else {
5253 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
5254 sdev_id(sdev), sdev->lun);
5255 }
5256
94086f5b 5257 if (device) {
6c223761
KB		 5258 sdev->hostdata = device;
5259 device->sdev = sdev;
5260 if (device->queue_depth) {
5261 device->advertised_queue_depth = device->queue_depth;
5262 scsi_change_queue_depth(sdev,
5263 device->advertised_queue_depth);
5264 }
5265 }
5266
5267 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5268
5269 return 0;
5270}
5271
52198226
CH		 5272static int pqi_map_queues(struct Scsi_Host *shost)
5273{
5274 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
5275
5276 return blk_mq_pci_map_queues(&shost->tag_set, ctrl_info->pci_dev);
5277}
5278
6c223761
KB		 5279static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
5280 void __user *arg)
5281{
5282 struct pci_dev *pci_dev;
5283 u32 subsystem_vendor;
5284 u32 subsystem_device;
5285 cciss_pci_info_struct pciinfo;
5286
5287 if (!arg)
5288 return -EINVAL;
5289
5290 pci_dev = ctrl_info->pci_dev;
5291
5292 pciinfo.domain = pci_domain_nr(pci_dev->bus);
5293 pciinfo.bus = pci_dev->bus->number;
5294 pciinfo.dev_fn = pci_dev->devfn;
5295 subsystem_vendor = pci_dev->subsystem_vendor;
5296 subsystem_device = pci_dev->subsystem_device;
5297 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) |
5298 subsystem_vendor;
5299
5300 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
5301 return -EFAULT;
5302
5303 return 0;
5304}
5305
5306static int pqi_getdrivver_ioctl(void __user *arg)
5307{
5308 u32 version;
5309
5310 if (!arg)
5311 return -EINVAL;
5312
5313 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
5314 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
5315
5316 if (copy_to_user(arg, &version, sizeof(version)))
5317 return -EFAULT;
5318
5319 return 0;
5320}
5321
5322struct ciss_error_info {
5323 u8 scsi_status;
5324 int command_status;
5325 size_t sense_data_length;
5326};
5327
5328static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
5329 struct ciss_error_info *ciss_error_info)
5330{
5331 int ciss_cmd_status;
5332 size_t sense_data_length;
5333
5334 switch (pqi_error_info->data_out_result) {
5335 case PQI_DATA_IN_OUT_GOOD:
5336 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
5337 break;
5338 case PQI_DATA_IN_OUT_UNDERFLOW:
5339 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
5340 break;
5341 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
5342 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
5343 break;
5344 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
5345 case PQI_DATA_IN_OUT_BUFFER_ERROR:
5346 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
5347 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
5348 case PQI_DATA_IN_OUT_ERROR:
5349 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
5350 break;
5351 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
5352 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
5353 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
5354 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
5355 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
5356 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
5357 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
5358 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
5359 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
5360 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
5361 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
5362 break;
5363 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
5364 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
5365 break;
5366 case PQI_DATA_IN_OUT_ABORTED:
5367 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
5368 break;
5369 case PQI_DATA_IN_OUT_TIMEOUT:
5370 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
5371 break;
5372 default:
5373 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
5374 break;
5375 }
5376
5377 sense_data_length =
5378 get_unaligned_le16(&pqi_error_info->sense_data_length);
5379 if (sense_data_length == 0)
5380 sense_data_length =
5381 get_unaligned_le16(&pqi_error_info->response_data_length);
5382 if (sense_data_length)
5383 if (sense_data_length > sizeof(pqi_error_info->data))
5384 sense_data_length = sizeof(pqi_error_info->data);
5385
5386 ciss_error_info->scsi_status = pqi_error_info->status;
5387 ciss_error_info->command_status = ciss_cmd_status;
5388 ciss_error_info->sense_data_length = sense_data_length;
5389}
5390
5391static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
5392{
5393 int rc;
5394 char *kernel_buffer = NULL;
5395 u16 iu_length;
5396 size_t sense_data_length;
5397 IOCTL_Command_struct iocommand;
5398 struct pqi_raid_path_request request;
5399 struct pqi_raid_error_info pqi_error_info;
5400 struct ciss_error_info ciss_error_info;
5401
5402 if (pqi_ctrl_offline(ctrl_info))
5403 return -ENXIO;
5404 if (!arg)
5405 return -EINVAL;
5406 if (!capable(CAP_SYS_RAWIO))
5407 return -EPERM;
5408 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
5409 return -EFAULT;
5410 if (iocommand.buf_size < 1 &&
5411 iocommand.Request.Type.Direction != XFER_NONE)
5412 return -EINVAL;
5413 if (iocommand.Request.CDBLen > sizeof(request.cdb))
5414 return -EINVAL;
5415 if (iocommand.Request.Type.Type != TYPE_CMD)
5416 return -EINVAL;
5417
5418 switch (iocommand.Request.Type.Direction) {
5419 case XFER_NONE:
5420 case XFER_WRITE:
5421 case XFER_READ:
5422 break;
5423 default:
5424 return -EINVAL;
5425 }
5426
5427 if (iocommand.buf_size > 0) {
5428 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
5429 if (!kernel_buffer)
5430 return -ENOMEM;
5431 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5432 if (copy_from_user(kernel_buffer, iocommand.buf,
5433 iocommand.buf_size)) {
5434 rc = -EFAULT;
5435 goto out;
5436 }
5437 } else {
5438 memset(kernel_buffer, 0, iocommand.buf_size);
5439 }
5440 }
5441
5442 memset(&request, 0, sizeof(request));
5443
5444 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
5445 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
5446 PQI_REQUEST_HEADER_LENGTH;
5447 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
5448 sizeof(request.lun_number));
5449 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
5450 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
5451
5452 switch (iocommand.Request.Type.Direction) {
5453 case XFER_NONE:
5454 request.data_direction = SOP_NO_DIRECTION_FLAG;
5455 break;
5456 case XFER_WRITE:
5457 request.data_direction = SOP_WRITE_FLAG;
5458 break;
5459 case XFER_READ:
5460 request.data_direction = SOP_READ_FLAG;
5461 break;
5462 }
5463
5464 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5465
5466 if (iocommand.buf_size > 0) {
5467 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
5468
5469 rc = pqi_map_single(ctrl_info->pci_dev,
5470 &request.sg_descriptors[0], kernel_buffer,
5471 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
5472 if (rc)
5473 goto out;
5474
5475 iu_length += sizeof(request.sg_descriptors[0]);
5476 }
5477
5478 put_unaligned_le16(iu_length, &request.header.iu_length);
5479
5480 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
5481 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
5482
5483 if (iocommand.buf_size > 0)
5484 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
5485 PCI_DMA_BIDIRECTIONAL);
5486
5487 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
5488
5489 if (rc == 0) {
5490 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
5491 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
5492 iocommand.error_info.CommandStatus =
5493 ciss_error_info.command_status;
5494 sense_data_length = ciss_error_info.sense_data_length;
5495 if (sense_data_length) {
5496 if (sense_data_length >
5497 sizeof(iocommand.error_info.SenseInfo))
5498 sense_data_length =
5499 sizeof(iocommand.error_info.SenseInfo);
5500 memcpy(iocommand.error_info.SenseInfo,
5501 pqi_error_info.data, sense_data_length);
5502 iocommand.error_info.SenseLen = sense_data_length;
5503 }
5504 }
5505
5506 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
5507 rc = -EFAULT;
5508 goto out;
5509 }
5510
5511 if (rc == 0 && iocommand.buf_size > 0 &&
5512 (iocommand.Request.Type.Direction & XFER_READ)) {
5513 if (copy_to_user(iocommand.buf, kernel_buffer,
5514 iocommand.buf_size)) {
5515 rc = -EFAULT;
5516 }
5517 }
5518
5519out:
5520 kfree(kernel_buffer);
5521
5522 return rc;
5523}
5524
5525static int pqi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
5526{
5527 int rc;
5528 struct pqi_ctrl_info *ctrl_info;
5529
5530 ctrl_info = shost_to_hba(sdev->host);
5531
5532 switch (cmd) {
5533 case CCISS_DEREGDISK:
5534 case CCISS_REGNEWDISK:
5535 case CCISS_REGNEWD:
5536 rc = pqi_scan_scsi_devices(ctrl_info);
5537 break;
5538 case CCISS_GETPCIINFO:
5539 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
5540 break;
5541 case CCISS_GETDRIVVER:
5542 rc = pqi_getdrivver_ioctl(arg);
5543 break;
5544 case CCISS_PASSTHRU:
5545 rc = pqi_passthru_ioctl(ctrl_info, arg);
5546 break;
5547 default:
5548 rc = -EINVAL;
5549 break;
5550 }
5551
5552 return rc;
5553}
5554
5555static ssize_t pqi_version_show(struct device *dev,
5556 struct device_attribute *attr, char *buffer)
5557{
5558 ssize_t count = 0;
5559 struct Scsi_Host *shost;
5560 struct pqi_ctrl_info *ctrl_info;
5561
5562 shost = class_to_shost(dev);
5563 ctrl_info = shost_to_hba(shost);
5564
5565 count += snprintf(buffer + count, PAGE_SIZE - count,
5566 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP);
5567
5568 count += snprintf(buffer + count, PAGE_SIZE - count,
5569 "firmware: %s\n", ctrl_info->firmware_version);
5570
5571 return count;
5572}
5573
5574static ssize_t pqi_host_rescan_store(struct device *dev,
5575 struct device_attribute *attr, const char *buffer, size_t count)
5576{
5577 struct Scsi_Host *shost = class_to_shost(dev);
5578
5579 pqi_scan_start(shost);
5580
5581 return count;
5582}
5583
3c50976f
KB		 5584static ssize_t pqi_lockup_action_show(struct device *dev,
5585 struct device_attribute *attr, char *buffer)
5586{
5587 int count = 0;
5588 unsigned int i;
5589
5590 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
5591 if (pqi_lockup_actions[i].action == pqi_lockup_action)
5592 count += snprintf(buffer + count, PAGE_SIZE - count,
5593 "[%s] ", pqi_lockup_actions[i].name);
5594 else
5595 count += snprintf(buffer + count, PAGE_SIZE - count,
5596 "%s ", pqi_lockup_actions[i].name);
5597 }
5598
5599 count += snprintf(buffer + count, PAGE_SIZE - count, "\n");
5600
5601 return count;
5602}
5603
5604static ssize_t pqi_lockup_action_store(struct device *dev,
5605 struct device_attribute *attr, const char *buffer, size_t count)
5606{
5607 unsigned int i;
5608 char *action_name;
5609 char action_name_buffer[32];
5610
5611 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
5612 action_name = strstrip(action_name_buffer);
5613
5614 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
5615 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
5616 pqi_lockup_action = pqi_lockup_actions[i].action;
5617 return count;
5618 }
5619 }
5620
5621 return -EINVAL;
5622}
5623
cbe0c7b1
KB		 5624static DEVICE_ATTR(version, 0444, pqi_version_show, NULL);
5625static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
3c50976f
KB		 5626static DEVICE_ATTR(lockup_action, 0644,
5627 pqi_lockup_action_show, pqi_lockup_action_store);
6c223761
KB		 5628
5629static struct device_attribute *pqi_shost_attrs[] = {
5630 &dev_attr_version,
5631 &dev_attr_rescan,
3c50976f 5632 &dev_attr_lockup_action,
6c223761
KB		 5633 NULL
5634};
5635
5636static ssize_t pqi_sas_address_show(struct device *dev,
5637 struct device_attribute *attr, char *buffer)
5638{
5639 struct pqi_ctrl_info *ctrl_info;
5640 struct scsi_device *sdev;
5641 struct pqi_scsi_dev *device;
5642 unsigned long flags;
5643 u64 sas_address;
5644
5645 sdev = to_scsi_device(dev);
5646 ctrl_info = shost_to_hba(sdev->host);
5647
5648 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5649
5650 device = sdev->hostdata;
5651 if (pqi_is_logical_device(device)) {
5652 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5653 flags);
5654 return -ENODEV;
5655 }
5656 sas_address = device->sas_address;
5657
5658 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5659
5660 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
5661}
5662
5663static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
5664 struct device_attribute *attr, char *buffer)
5665{
5666 struct pqi_ctrl_info *ctrl_info;
5667 struct scsi_device *sdev;
5668 struct pqi_scsi_dev *device;
5669 unsigned long flags;
5670
5671 sdev = to_scsi_device(dev);
5672 ctrl_info = shost_to_hba(sdev->host);
5673
5674 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5675
5676 device = sdev->hostdata;
5677 buffer[0] = device->offload_enabled ? '1' : '0';
5678 buffer[1] = '\n';
5679 buffer[2] = '\0';
5680
5681 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5682
5683 return 2;
5684}
5685
cbe0c7b1
KB		 5686static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
5687static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
6c223761
KB		 5688 pqi_ssd_smart_path_enabled_show, NULL);
5689
5690static struct device_attribute *pqi_sdev_attrs[] = {
5691 &dev_attr_sas_address,
5692 &dev_attr_ssd_smart_path_enabled,
5693 NULL
5694};
5695
5696static struct scsi_host_template pqi_driver_template = {
5697 .module = THIS_MODULE,
5698 .name = DRIVER_NAME_SHORT,
5699 .proc_name = DRIVER_NAME_SHORT,
5700 .queuecommand = pqi_scsi_queue_command,
5701 .scan_start = pqi_scan_start,
5702 .scan_finished = pqi_scan_finished,
5703 .this_id = -1,
5704 .use_clustering = ENABLE_CLUSTERING,
5705 .eh_device_reset_handler = pqi_eh_device_reset_handler,
5706 .ioctl = pqi_ioctl,
5707 .slave_alloc = pqi_slave_alloc,
52198226 5708 .map_queues = pqi_map_queues,
6c223761
KB		 5709 .sdev_attrs = pqi_sdev_attrs,
5710 .shost_attrs = pqi_shost_attrs,
5711};
5712
5713static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
5714{
5715 int rc;
5716 struct Scsi_Host *shost;
5717
5718 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
5719 if (!shost) {
5720 dev_err(&ctrl_info->pci_dev->dev,
5721 "scsi_host_alloc failed for controller %u\n",
5722 ctrl_info->ctrl_id);
5723 return -ENOMEM;
5724 }
5725
5726 shost->io_port = 0;
5727 shost->n_io_port = 0;
5728 shost->this_id = -1;
5729 shost->max_channel = PQI_MAX_BUS;
5730 shost->max_cmd_len = MAX_COMMAND_SIZE;
5731 shost->max_lun = ~0;
5732 shost->max_id = ~0;
5733 shost->max_sectors = ctrl_info->max_sectors;
5734 shost->can_queue = ctrl_info->scsi_ml_can_queue;
5735 shost->cmd_per_lun = shost->can_queue;
5736 shost->sg_tablesize = ctrl_info->sg_tablesize;
5737 shost->transportt = pqi_sas_transport_template;
52198226 5738 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
6c223761
KB		 5739 shost->unique_id = shost->irq;
5740 shost->nr_hw_queues = ctrl_info->num_queue_groups;
5741 shost->hostdata[0] = (unsigned long)ctrl_info;
5742
5743 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
5744 if (rc) {
5745 dev_err(&ctrl_info->pci_dev->dev,
5746 "scsi_add_host failed for controller %u\n",
5747 ctrl_info->ctrl_id);
5748 goto free_host;
5749 }
5750
5751 rc = pqi_add_sas_host(shost, ctrl_info);
5752 if (rc) {
5753 dev_err(&ctrl_info->pci_dev->dev,
5754 "add SAS host failed for controller %u\n",
5755 ctrl_info->ctrl_id);
5756 goto remove_host;
5757 }
5758
5759 ctrl_info->scsi_host = shost;
5760
5761 return 0;
5762
5763remove_host:
5764 scsi_remove_host(shost);
5765free_host:
5766 scsi_host_put(shost);
5767
5768 return rc;
5769}
5770
5771static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
5772{
5773 struct Scsi_Host *shost;
5774
5775 pqi_delete_sas_host(ctrl_info);
5776
5777 shost = ctrl_info->scsi_host;
5778 if (!shost)
5779 return;
5780
5781 scsi_remove_host(shost);
5782 scsi_host_put(shost);
5783}
5784
5785#define PQI_RESET_ACTION_RESET 0x1
5786
5787#define PQI_RESET_TYPE_NO_RESET 0x0
5788#define PQI_RESET_TYPE_SOFT_RESET 0x1
5789#define PQI_RESET_TYPE_FIRM_RESET 0x2
5790#define PQI_RESET_TYPE_HARD_RESET 0x3
5791
5792static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
5793{
5794 int rc;
5795 u32 reset_params;
5796
5797 reset_params = (PQI_RESET_ACTION_RESET << 5) |
5798 PQI_RESET_TYPE_HARD_RESET;
5799
5800 writel(reset_params,
5801 &ctrl_info->pqi_registers->device_reset);
5802
5803 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
5804 if (rc)
5805 dev_err(&ctrl_info->pci_dev->dev,
5806 "PQI reset failed\n");
5807
5808 return rc;
5809}
5810
5811static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info)
5812{
5813 int rc;
5814 struct bmic_identify_controller *identify;
5815
5816 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
5817 if (!identify)
5818 return -ENOMEM;
5819
5820 rc = pqi_identify_controller(ctrl_info, identify);
5821 if (rc)
5822 goto out;
5823
5824 memcpy(ctrl_info->firmware_version, identify->firmware_version,
5825 sizeof(identify->firmware_version));
5826 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
5827 snprintf(ctrl_info->firmware_version +
5828 strlen(ctrl_info->firmware_version),
5829 sizeof(ctrl_info->firmware_version),
5830 "-%u", get_unaligned_le16(&identify->firmware_build_number));
5831
5832out:
5833 kfree(identify);
5834
5835 return rc;
5836}
5837
98f87667
KB		 5838static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
5839{
5840 u32 table_length;
5841 u32 section_offset;
5842 void __iomem *table_iomem_addr;
5843 struct pqi_config_table *config_table;
5844 struct pqi_config_table_section_header *section;
5845
5846 table_length = ctrl_info->config_table_length;
5847
5848 config_table = kmalloc(table_length, GFP_KERNEL);
5849 if (!config_table) {
5850 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 5851 "failed to allocate memory for PQI configuration table\n");
98f87667
KB		 5852 return -ENOMEM;
5853 }
5854
5855 /*
5856 * Copy the config table contents from I/O memory space into the
5857 * temporary buffer.
5858 */
5859 table_iomem_addr = ctrl_info->iomem_base +
5860 ctrl_info->config_table_offset;
5861 memcpy_fromio(config_table, table_iomem_addr, table_length);
5862
5863 section_offset =
5864 get_unaligned_le32(&config_table->first_section_offset);
5865
5866 while (section_offset) {
5867 section = (void *)config_table + section_offset;
5868
5869 switch (get_unaligned_le16(&section->section_id)) {
5870 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
5871 ctrl_info->heartbeat_counter = table_iomem_addr +
5872 section_offset +
5873 offsetof(struct pqi_config_table_heartbeat,
5874 heartbeat_counter);
5875 break;
5876 }
5877
5878 section_offset =
5879 get_unaligned_le16(&section->next_section_offset);
5880 }
5881
5882 kfree(config_table);
5883
5884 return 0;
5885}
5886
162d7753
KB		 5887/* Switches the controller from PQI mode back into SIS mode. */
5888
5889static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
5890{
5891 int rc;
5892
061ef06a 5893 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
162d7753
KB		 5894 rc = pqi_reset(ctrl_info);
5895 if (rc)
5896 return rc;
5897 sis_reenable_sis_mode(ctrl_info);
5898 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
5899
5900 return 0;
5901}
5902
5903/*
5904 * If the controller isn't already in SIS mode, this function forces it into
5905 * SIS mode.
5906 */
5907
5908static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
ff6abb73
KB		 5909{
5910 if (!sis_is_firmware_running(ctrl_info))
5911 return -ENXIO;
5912
162d7753
KB		 5913 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
5914 return 0;
5915
5916 if (sis_is_kernel_up(ctrl_info)) {
5917 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
5918 return 0;
ff6abb73
KB		 5919 }
5920
162d7753 5921 return pqi_revert_to_sis_mode(ctrl_info);
ff6abb73
KB		 5922}
5923
6c223761
KB		 5924static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
5925{
5926 int rc;
5927
162d7753
KB		 5928 rc = pqi_force_sis_mode(ctrl_info);
5929 if (rc)
5930 return rc;
6c223761
KB		 5931
5932 /*
5933 * Wait until the controller is ready to start accepting SIS
5934 * commands.
5935 */
5936 rc = sis_wait_for_ctrl_ready(ctrl_info);
8845fdfa 5937 if (rc)
6c223761 5938 return rc;
6c223761
KB		 5939
5940 /*
5941 * Get the controller properties. This allows us to determine
5942 * whether or not it supports PQI mode.
5943 */
5944 rc = sis_get_ctrl_properties(ctrl_info);
5945 if (rc) {
5946 dev_err(&ctrl_info->pci_dev->dev,
5947 "error obtaining controller properties\n");
5948 return rc;
5949 }
5950
5951 rc = sis_get_pqi_capabilities(ctrl_info);
5952 if (rc) {
5953 dev_err(&ctrl_info->pci_dev->dev,
5954 "error obtaining controller capabilities\n");
5955 return rc;
5956 }
5957
d727a776
KB		 5958 if (reset_devices) {
5959 if (ctrl_info->max_outstanding_requests >
5960 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
5961 ctrl_info->max_outstanding_requests =
5962 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
5963 } else {
5964 if (ctrl_info->max_outstanding_requests >
5965 PQI_MAX_OUTSTANDING_REQUESTS)
5966 ctrl_info->max_outstanding_requests =
5967 PQI_MAX_OUTSTANDING_REQUESTS;
5968 }
6c223761
KB		 5969
5970 pqi_calculate_io_resources(ctrl_info);
5971
5972 rc = pqi_alloc_error_buffer(ctrl_info);
5973 if (rc) {
5974 dev_err(&ctrl_info->pci_dev->dev,
5975 "failed to allocate PQI error buffer\n");
5976 return rc;
5977 }
5978
5979 /*
5980 * If the function we are about to call succeeds, the
5981 * controller will transition from legacy SIS mode
5982 * into PQI mode.
5983 */
5984 rc = sis_init_base_struct_addr(ctrl_info);
5985 if (rc) {
5986 dev_err(&ctrl_info->pci_dev->dev,
5987 "error initializing PQI mode\n");
5988 return rc;
5989 }
5990
5991 /* Wait for the controller to complete the SIS -> PQI transition. */
5992 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
5993 if (rc) {
5994 dev_err(&ctrl_info->pci_dev->dev,
5995 "transition to PQI mode failed\n");
5996 return rc;
5997 }
5998
5999 /* From here on, we are running in PQI mode. */
6000 ctrl_info->pqi_mode_enabled = true;
ff6abb73 6001 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6c223761 6002
98f87667
KB		 6003 rc = pqi_process_config_table(ctrl_info);
6004 if (rc)
6005 return rc;
6006
6c223761
KB		 6007 rc = pqi_alloc_admin_queues(ctrl_info);
6008 if (rc) {
6009 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 6010 "failed to allocate admin queues\n");
6c223761
KB		 6011 return rc;
6012 }
6013
6014 rc = pqi_create_admin_queues(ctrl_info);
6015 if (rc) {
6016 dev_err(&ctrl_info->pci_dev->dev,
6017 "error creating admin queues\n");
6018 return rc;
6019 }
6020
6021 rc = pqi_report_device_capability(ctrl_info);
6022 if (rc) {
6023 dev_err(&ctrl_info->pci_dev->dev,
6024 "obtaining device capability failed\n");
6025 return rc;
6026 }
6027
6028 rc = pqi_validate_device_capability(ctrl_info);
6029 if (rc)
6030 return rc;
6031
6032 pqi_calculate_queue_resources(ctrl_info);
6033
6034 rc = pqi_enable_msix_interrupts(ctrl_info);
6035 if (rc)
6036 return rc;
6037
6038 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
6039 ctrl_info->max_msix_vectors =
6040 ctrl_info->num_msix_vectors_enabled;
6041 pqi_calculate_queue_resources(ctrl_info);
6042 }
6043
6044 rc = pqi_alloc_io_resources(ctrl_info);
6045 if (rc)
6046 return rc;
6047
6048 rc = pqi_alloc_operational_queues(ctrl_info);
d87d5474
KB		 6049 if (rc) {
6050 dev_err(&ctrl_info->pci_dev->dev,
6051 "failed to allocate operational queues\n");
6c223761 6052 return rc;
d87d5474 6053 }
6c223761
KB		 6054
6055 pqi_init_operational_queues(ctrl_info);
6056
6057 rc = pqi_request_irqs(ctrl_info);
6058 if (rc)
6059 return rc;
6060
6c223761
KB		 6061 rc = pqi_create_queues(ctrl_info);
6062 if (rc)
6063 return rc;
6064
061ef06a
KB		 6065 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
6066
6067 ctrl_info->controller_online = true;
6068 pqi_start_heartbeat_timer(ctrl_info);
6c223761 6069
6a50d6ad 6070 rc = pqi_enable_events(ctrl_info);
6c223761
KB		 6071 if (rc) {
6072 dev_err(&ctrl_info->pci_dev->dev,
6a50d6ad 6073 "error enabling events\n");
6c223761
KB		 6074 return rc;
6075 }
6076
6c223761
KB		 6077 /* Register with the SCSI subsystem. */
6078 rc = pqi_register_scsi(ctrl_info);
6079 if (rc)
6080 return rc;
6081
6082 rc = pqi_get_ctrl_firmware_version(ctrl_info);
6083 if (rc) {
6084 dev_err(&ctrl_info->pci_dev->dev,
6085 "error obtaining firmware version\n");
6086 return rc;
6087 }
6088
6089 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
6090 if (rc) {
6091 dev_err(&ctrl_info->pci_dev->dev,
6092 "error updating host wellness\n");
6093 return rc;
6094 }
6095
6096 pqi_schedule_update_time_worker(ctrl_info);
6097
6098 pqi_scan_scsi_devices(ctrl_info);
6099
6100 return 0;
6101}
6102
061ef06a
KB		 6103#if defined(CONFIG_PM)
6104
6105static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
6106{
6107 unsigned int i;
6108 struct pqi_admin_queues *admin_queues;
6109 struct pqi_event_queue *event_queue;
6110
6111 admin_queues = &ctrl_info->admin_queues;
6112 admin_queues->iq_pi_copy = 0;
6113 admin_queues->oq_ci_copy = 0;
6114 *admin_queues->oq_pi = 0;
6115
6116 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
6117 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
6118 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
6119 ctrl_info->queue_groups[i].oq_ci_copy = 0;
6120
6121 *ctrl_info->queue_groups[i].iq_ci[RAID_PATH] = 0;
6122 *ctrl_info->queue_groups[i].iq_ci[AIO_PATH] = 0;
6123 *ctrl_info->queue_groups[i].oq_pi = 0;
6124 }
6125
6126 event_queue = &ctrl_info->event_queue;
6127 *event_queue->oq_pi = 0;
6128 event_queue->oq_ci_copy = 0;
6129}
6130
6131static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
6132{
6133 int rc;
6134
6135 rc = pqi_force_sis_mode(ctrl_info);
6136 if (rc)
6137 return rc;
6138
6139 /*
6140 * Wait until the controller is ready to start accepting SIS
6141 * commands.
6142 */
6143 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
6144 if (rc)
6145 return rc;
6146
6147 /*
6148 * If the function we are about to call succeeds, the
6149 * controller will transition from legacy SIS mode
6150 * into PQI mode.
6151 */
6152 rc = sis_init_base_struct_addr(ctrl_info);
6153 if (rc) {
6154 dev_err(&ctrl_info->pci_dev->dev,
6155 "error initializing PQI mode\n");
6156 return rc;
6157 }
6158
6159 /* Wait for the controller to complete the SIS -> PQI transition. */
6160 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6161 if (rc) {
6162 dev_err(&ctrl_info->pci_dev->dev,
6163 "transition to PQI mode failed\n");
6164 return rc;
6165 }
6166
6167 /* From here on, we are running in PQI mode. */
6168 ctrl_info->pqi_mode_enabled = true;
6169 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
6170
6171 pqi_reinit_queues(ctrl_info);
6172
6173 rc = pqi_create_admin_queues(ctrl_info);
6174 if (rc) {
6175 dev_err(&ctrl_info->pci_dev->dev,
6176 "error creating admin queues\n");
6177 return rc;
6178 }
6179
6180 rc = pqi_create_queues(ctrl_info);
6181 if (rc)
6182 return rc;
6183
6184 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
6185
6186 ctrl_info->controller_online = true;
6187 pqi_start_heartbeat_timer(ctrl_info);
6188 pqi_ctrl_unblock_requests(ctrl_info);
6189
6190 rc = pqi_enable_events(ctrl_info);
6191 if (rc) {
6192 dev_err(&ctrl_info->pci_dev->dev,
d87d5474 6193 "error enabling events\n");
061ef06a
KB		 6194 return rc;
6195 }
6196
6197 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
6198 if (rc) {
6199 dev_err(&ctrl_info->pci_dev->dev,
6200 "error updating host wellness\n");
6201 return rc;
6202 }
6203
6204 pqi_schedule_update_time_worker(ctrl_info);
6205
6206 pqi_scan_scsi_devices(ctrl_info);
6207
6208 return 0;
6209}
6210
6211#endif /* CONFIG_PM */
6212
a81ed5f3
KB		 6213static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
6214 u16 timeout)
6215{
6216 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
6217 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
6218}
6219
6c223761
KB		 6220static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
6221{
6222 int rc;
6223 u64 mask;
6224
6225 rc = pci_enable_device(ctrl_info->pci_dev);
6226 if (rc) {
6227 dev_err(&ctrl_info->pci_dev->dev,
6228 "failed to enable PCI device\n");
6229 return rc;
6230 }
6231
6232 if (sizeof(dma_addr_t) > 4)
6233 mask = DMA_BIT_MASK(64);
6234 else
6235 mask = DMA_BIT_MASK(32);
6236
6237 rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask);
6238 if (rc) {
6239 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
6240 goto disable_device;
6241 }
6242
6243 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
6244 if (rc) {
6245 dev_err(&ctrl_info->pci_dev->dev,
6246 "failed to obtain PCI resources\n");
6247 goto disable_device;
6248 }
6249
6250 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start(
6251 ctrl_info->pci_dev, 0),
6252 sizeof(struct pqi_ctrl_registers));
6253 if (!ctrl_info->iomem_base) {
6254 dev_err(&ctrl_info->pci_dev->dev,
6255 "failed to map memory for controller registers\n");
6256 rc = -ENOMEM;
6257 goto release_regions;
6258 }
6259
a81ed5f3
KB		 6260#define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
6261
6262 /* Increase the PCIe completion timeout. */
6263 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
6264 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
6265 if (rc) {
6266 dev_err(&ctrl_info->pci_dev->dev,
6267 "failed to set PCIe completion timeout\n");
6268 goto release_regions;
6269 }
6270
6c223761
KB		 6271 /* Enable bus mastering. */
6272 pci_set_master(ctrl_info->pci_dev);
6273
cbe0c7b1
KB		 6274 ctrl_info->registers = ctrl_info->iomem_base;
6275 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
6276
6c223761
KB		 6277 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
6278
6279 return 0;
6280
6281release_regions:
6282 pci_release_regions(ctrl_info->pci_dev);
6283disable_device:
6284 pci_disable_device(ctrl_info->pci_dev);
6285
6286 return rc;
6287}
6288
6289static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
6290{
6291 iounmap(ctrl_info->iomem_base);
6292 pci_release_regions(ctrl_info->pci_dev);
cbe0c7b1
KB		 6293 if (pci_is_enabled(ctrl_info->pci_dev))
6294 pci_disable_device(ctrl_info->pci_dev);
6c223761
KB		 6295 pci_set_drvdata(ctrl_info->pci_dev, NULL);
6296}
6297
6298static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
6299{
6300 struct pqi_ctrl_info *ctrl_info;
6301
6302 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
6303 GFP_KERNEL, numa_node);
6304 if (!ctrl_info)
6305 return NULL;
6306
6307 mutex_init(&ctrl_info->scan_mutex);
7561a7e4 6308 mutex_init(&ctrl_info->lun_reset_mutex);
6c223761
KB		 6309
6310 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
6311 spin_lock_init(&ctrl_info->scsi_device_list_lock);
6312
6313 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
6314 atomic_set(&ctrl_info->num_interrupts, 0);
6315
6316 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
6317 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
6318
98f87667 6319 init_timer(&ctrl_info->heartbeat_timer);
5f310425 6320 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
98f87667 6321
6c223761
KB		 6322 sema_init(&ctrl_info->sync_request_sem,
6323 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
7561a7e4 6324 init_waitqueue_head(&ctrl_info->block_requests_wait);
6c223761 6325
376fb880
KB		 6326 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
6327 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
6328 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
6329 pqi_raid_bypass_retry_worker);
6330
6c223761 6331 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
061ef06a 6332 ctrl_info->irq_mode = IRQ_MODE_NONE;
6c223761
KB		 6333 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
6334
6335 return ctrl_info;
6336}
6337
6338static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
6339{
6340 kfree(ctrl_info);
6341}
6342
6343static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
6344{
98bf061b
KB		 6345 pqi_free_irqs(ctrl_info);
6346 pqi_disable_msix_interrupts(ctrl_info);
6c223761
KB		 6347}
6348
6349static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
6350{
6351 pqi_stop_heartbeat_timer(ctrl_info);
6352 pqi_free_interrupts(ctrl_info);
6353 if (ctrl_info->queue_memory_base)
6354 dma_free_coherent(&ctrl_info->pci_dev->dev,
6355 ctrl_info->queue_memory_length,
6356 ctrl_info->queue_memory_base,
6357 ctrl_info->queue_memory_base_dma_handle);
6358 if (ctrl_info->admin_queue_memory_base)
6359 dma_free_coherent(&ctrl_info->pci_dev->dev,
6360 ctrl_info->admin_queue_memory_length,
6361 ctrl_info->admin_queue_memory_base,
6362 ctrl_info->admin_queue_memory_base_dma_handle);
6363 pqi_free_all_io_requests(ctrl_info);
6364 if (ctrl_info->error_buffer)
6365 dma_free_coherent(&ctrl_info->pci_dev->dev,
6366 ctrl_info->error_buffer_length,
6367 ctrl_info->error_buffer,
6368 ctrl_info->error_buffer_dma_handle);
6369 if (ctrl_info->iomem_base)
6370 pqi_cleanup_pci_init(ctrl_info);
6371 pqi_free_ctrl_info(ctrl_info);
6372}
6373
6374static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
6375{
061ef06a
KB		 6376 pqi_cancel_rescan_worker(ctrl_info);
6377 pqi_cancel_update_time_worker(ctrl_info);
e57a1f9b
KB		 6378 pqi_remove_all_scsi_devices(ctrl_info);
6379 pqi_unregister_scsi(ctrl_info);
162d7753
KB		 6380 if (ctrl_info->pqi_mode_enabled)
6381 pqi_revert_to_sis_mode(ctrl_info);
6c223761
KB		 6382 pqi_free_ctrl_resources(ctrl_info);
6383}
6384
3c50976f
KB		 6385static void pqi_perform_lockup_action(void)
6386{
6387 switch (pqi_lockup_action) {
6388 case PANIC:
6389 panic("FATAL: Smart Family Controller lockup detected");
6390 break;
6391 case REBOOT:
6392 emergency_restart();
6393 break;
6394 case NONE:
6395 default:
6396 break;
6397 }
6398}
6399
5f310425
KB		 6400static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
6401 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
6402 .status = SAM_STAT_CHECK_CONDITION,
6403};
6404
6405static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
376fb880
KB		 6406{
6407 unsigned int i;
376fb880 6408 struct pqi_io_request *io_request;
376fb880
KB		 6409 struct scsi_cmnd *scmd;
6410
5f310425
KB		 6411 for (i = 0; i < ctrl_info->max_io_slots; i++) {
6412 io_request = &ctrl_info->io_request_pool[i];
6413 if (atomic_read(&io_request->refcount) == 0)
6414 continue;
376fb880 6415
5f310425
KB		 6416 scmd = io_request->scmd;
6417 if (scmd) {
6418 set_host_byte(scmd, DID_NO_CONNECT);
6419 } else {
6420 io_request->status = -ENXIO;
6421 io_request->error_info =
6422 &pqi_ctrl_offline_raid_error_info;
376fb880 6423 }
5f310425
KB		 6424
6425 io_request->io_complete_callback(io_request,
6426 io_request->context);
376fb880
KB		 6427 }
6428}
6429
5f310425 6430static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
376fb880 6431{
5f310425
KB		 6432 pqi_perform_lockup_action();
6433 pqi_stop_heartbeat_timer(ctrl_info);
6434 pqi_free_interrupts(ctrl_info);
6435 pqi_cancel_rescan_worker(ctrl_info);
6436 pqi_cancel_update_time_worker(ctrl_info);
6437 pqi_ctrl_wait_until_quiesced(ctrl_info);
6438 pqi_fail_all_outstanding_requests(ctrl_info);
6439 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
6440 pqi_ctrl_unblock_requests(ctrl_info);
6441}
6442
6443static void pqi_ctrl_offline_worker(struct work_struct *work)
6444{
6445 struct pqi_ctrl_info *ctrl_info;
6446
6447 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
6448 pqi_take_ctrl_offline_deferred(ctrl_info);
376fb880
KB		 6449}
6450
6451static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
6452{
5f310425
KB		 6453 if (!ctrl_info->controller_online)
6454 return;
6455
376fb880 6456 ctrl_info->controller_online = false;
5f310425
KB		 6457 ctrl_info->pqi_mode_enabled = false;
6458 pqi_ctrl_block_requests(ctrl_info);
376fb880
KB		 6459 sis_shutdown_ctrl(ctrl_info);
6460 pci_disable_device(ctrl_info->pci_dev);
6461 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
5f310425 6462 schedule_work(&ctrl_info->ctrl_offline_work);
376fb880
KB		 6463}
6464
d91d7820 6465static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
6c223761
KB		 6466 const struct pci_device_id *id)
6467{
6468 char *ctrl_description;
6469
6470 if (id->driver_data) {
6471 ctrl_description = (char *)id->driver_data;
6472 } else {
6473 switch (id->subvendor) {
6474 case PCI_VENDOR_ID_HP:
6475 ctrl_description = hpe_branded_controller;
6476 break;
6477 case PCI_VENDOR_ID_ADAPTEC2:
6478 default:
6479 ctrl_description = microsemi_branded_controller;
6480 break;
6481 }
6482 }
6483
d91d7820 6484 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
6c223761
KB		 6485}
6486
d91d7820
KB		 6487static int pqi_pci_probe(struct pci_dev *pci_dev,
6488 const struct pci_device_id *id)
6c223761
KB		 6489{
6490 int rc;
6491 int node;
6492 struct pqi_ctrl_info *ctrl_info;
6493
d91d7820 6494 pqi_print_ctrl_info(pci_dev, id);
6c223761
KB		 6495
6496 if (pqi_disable_device_id_wildcards &&
6497 id->subvendor == PCI_ANY_ID &&
6498 id->subdevice == PCI_ANY_ID) {
d91d7820 6499 dev_warn(&pci_dev->dev,
6c223761
KB		 6500 "controller not probed because device ID wildcards are disabled\n");
6501 return -ENODEV;
6502 }
6503
6504 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
d91d7820 6505 dev_warn(&pci_dev->dev,
6c223761
KB		 6506 "controller device ID matched using wildcards\n");
6507
d91d7820 6508 node = dev_to_node(&pci_dev->dev);
6c223761 6509 if (node == NUMA_NO_NODE)
d91d7820 6510 set_dev_node(&pci_dev->dev, 0);
6c223761
KB		 6511
6512 ctrl_info = pqi_alloc_ctrl_info(node);
6513 if (!ctrl_info) {
d91d7820 6514 dev_err(&pci_dev->dev,
6c223761
KB		 6515 "failed to allocate controller info block\n");
6516 return -ENOMEM;
6517 }
6518
d91d7820 6519 ctrl_info->pci_dev = pci_dev;
6c223761
KB		 6520
6521 rc = pqi_pci_init(ctrl_info);
6522 if (rc)
6523 goto error;
6524
6525 rc = pqi_ctrl_init(ctrl_info);
6526 if (rc)
6527 goto error;
6528
6529 return 0;
6530
6531error:
6532 pqi_remove_ctrl(ctrl_info);
6533
6534 return rc;
6535}
6536
d91d7820 6537static void pqi_pci_remove(struct pci_dev *pci_dev)
6c223761
KB		 6538{
6539 struct pqi_ctrl_info *ctrl_info;
6540
d91d7820 6541 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 6542 if (!ctrl_info)
6543 return;
6544
6545 pqi_remove_ctrl(ctrl_info);
6546}
6547
d91d7820 6548static void pqi_shutdown(struct pci_dev *pci_dev)
6c223761
KB		 6549{
6550 int rc;
6551 struct pqi_ctrl_info *ctrl_info;
6552
d91d7820 6553 ctrl_info = pci_get_drvdata(pci_dev);
6c223761
KB		 6554 if (!ctrl_info)
6555 goto error;
6556
6557 /*
6558 * Write all data in the controller's battery-backed cache to
6559 * storage.
6560 */
6561 rc = pqi_flush_cache(ctrl_info);
6562 if (rc == 0)
6563 return;
6564
6565error:
d91d7820 6566 dev_warn(&pci_dev->dev,
6c223761
KB		 6567 "unable to flush controller cache\n");
6568}
6569
3c50976f
KB		 6570static void pqi_process_lockup_action_param(void)
6571{
6572 unsigned int i;
6573
6574 if (!pqi_lockup_action_param)
6575 return;
6576
6577 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6578 if (strcmp(pqi_lockup_action_param,
6579 pqi_lockup_actions[i].name) == 0) {
6580 pqi_lockup_action = pqi_lockup_actions[i].action;
6581 return;
6582 }
6583 }
6584
6585 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
6586 DRIVER_NAME_SHORT, pqi_lockup_action_param);
6587}
6588
6589static void pqi_process_module_params(void)
6590{
6591 pqi_process_lockup_action_param();
6592}
6593
061ef06a
KB		 6594#if defined(CONFIG_PM)
6595
6596static int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
6597{
6598 struct pqi_ctrl_info *ctrl_info;
6599
6600 ctrl_info = pci_get_drvdata(pci_dev);
6601
6602 pqi_disable_events(ctrl_info);
6603 pqi_cancel_update_time_worker(ctrl_info);
6604 pqi_cancel_rescan_worker(ctrl_info);
6605 pqi_wait_until_scan_finished(ctrl_info);
6606 pqi_wait_until_lun_reset_finished(ctrl_info);
6607 pqi_flush_cache(ctrl_info);
6608 pqi_ctrl_block_requests(ctrl_info);
6609 pqi_ctrl_wait_until_quiesced(ctrl_info);
6610 pqi_wait_until_inbound_queues_empty(ctrl_info);
6611 pqi_ctrl_wait_for_pending_io(ctrl_info);
6612 pqi_stop_heartbeat_timer(ctrl_info);
6613
6614 if (state.event == PM_EVENT_FREEZE)
6615 return 0;
6616
6617 pci_save_state(pci_dev);
6618 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
6619
6620 ctrl_info->controller_online = false;
6621 ctrl_info->pqi_mode_enabled = false;
6622
6623 return 0;
6624}
6625
6626static int pqi_resume(struct pci_dev *pci_dev)
6627{
6628 int rc;
6629 struct pqi_ctrl_info *ctrl_info;
6630
6631 ctrl_info = pci_get_drvdata(pci_dev);
6632
6633 if (pci_dev->current_state != PCI_D0) {
6634 ctrl_info->max_hw_queue_index = 0;
6635 pqi_free_interrupts(ctrl_info);
6636 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
6637 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
6638 IRQF_SHARED, DRIVER_NAME_SHORT,
6639 &ctrl_info->queue_groups[0]);
6640 if (rc) {
6641 dev_err(&ctrl_info->pci_dev->dev,
6642 "irq %u init failed with error %d\n",
6643 pci_dev->irq, rc);
6644 return rc;
6645 }
6646 pqi_start_heartbeat_timer(ctrl_info);
6647 pqi_ctrl_unblock_requests(ctrl_info);
6648 return 0;
6649 }
6650
6651 pci_set_power_state(pci_dev, PCI_D0);
6652 pci_restore_state(pci_dev);
6653
6654 return pqi_ctrl_init_resume(ctrl_info);
6655}
6656
6657#endif /* CONFIG_PM */
6658
6c223761
KB		 6659/* Define the PCI IDs for the controllers that we support. */
6660static const struct pci_device_id pqi_pci_id_table[] = {
7eddabff
KB		 6661 {
6662 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6663 0x152d, 0x8a22)
6664 },
6665 {
6666 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6667 0x152d, 0x8a23)
6668 },
6669 {
6670 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6671 0x152d, 0x8a24)
6672 },
6673 {
6674 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6675 0x152d, 0x8a36)
6676 },
6677 {
6678 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6679 0x152d, 0x8a37)
6680 },
6c223761
KB		 6681 {
6682 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6683 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
6684 },
6685 {
6686 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6687 PCI_VENDOR_ID_ADAPTEC2, 0x0605)
6c223761
KB		 6688 },
6689 {
6690 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6691 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
6c223761
KB		 6692 },
6693 {
6694 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6695 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
6c223761
KB		 6696 },
6697 {
6698 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6699 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
6c223761
KB		 6700 },
6701 {
6702 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6703 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
6c223761
KB		 6704 },
6705 {
6706 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6707 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
6c223761
KB		 6708 },
6709 {
6710 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6711 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
6c223761
KB		 6712 },
6713 {
6714 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6715 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
6c223761
KB		 6716 },
6717 {
6718 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6719 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
6c223761
KB		 6720 },
6721 {
6722 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6723 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
6c223761
KB		 6724 },
6725 {
6726 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6727 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
6c223761
KB		 6728 },
6729 {
6730 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6731 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
6c223761
KB		 6732 },
6733 {
6734 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6735 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
6c223761
KB		 6736 },
6737 {
6738 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6739 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
6c223761
KB		 6740 },
6741 {
6742 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6743 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
6c223761
KB		 6744 },
6745 {
6746 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6747 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
6c223761
KB		 6748 },
6749 {
6750 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6751 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
6c223761
KB		 6752 },
6753 {
6754 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6755 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
6c223761
KB		 6756 },
6757 {
6758 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6759 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
6c223761
KB		 6760 },
6761 {
6762 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6763 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
6c223761
KB		 6764 },
6765 {
6766 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6767 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
6c223761
KB		 6768 },
6769 {
6770 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6771 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
6c223761
KB		 6772 },
6773 {
6774 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6775 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
6c223761
KB		 6776 },
6777 {
6778 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff 6779 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
6c223761
KB		 6780 },
6781 {
6782 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7eddabff
KB		 6783 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
6784 },
6785 {
6786 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6787 PCI_VENDOR_ID_HP, 0x0600)
6788 },
6789 {
6790 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6791 PCI_VENDOR_ID_HP, 0x0601)
6792 },
6793 {
6794 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6795 PCI_VENDOR_ID_HP, 0x0602)
6796 },
6797 {
6798 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6799 PCI_VENDOR_ID_HP, 0x0603)
6800 },
6801 {
6802 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6803 PCI_VENDOR_ID_HP, 0x0604)
6804 },
6805 {
6806 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6807 PCI_VENDOR_ID_HP, 0x0606)
6808 },
6809 {
6810 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6811 PCI_VENDOR_ID_HP, 0x0650)
6812 },
6813 {
6814 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6815 PCI_VENDOR_ID_HP, 0x0651)
6816 },
6817 {
6818 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6819 PCI_VENDOR_ID_HP, 0x0652)
6820 },
6821 {
6822 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6823 PCI_VENDOR_ID_HP, 0x0653)
6824 },
6825 {
6826 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6827 PCI_VENDOR_ID_HP, 0x0654)
6828 },
6829 {
6830 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6831 PCI_VENDOR_ID_HP, 0x0655)
6832 },
6833 {
6834 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6835 PCI_VENDOR_ID_HP, 0x0656)
6836 },
6837 {
6838 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6839 PCI_VENDOR_ID_HP, 0x0657)
6840 },
6841 {
6842 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6843 PCI_VENDOR_ID_HP, 0x0700)
6844 },
6845 {
6846 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6847 PCI_VENDOR_ID_HP, 0x0701)
6c223761
KB		 6848 },
6849 {
6850 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6851 PCI_VENDOR_ID_HP, 0x1001)
6852 },
6853 {
6854 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6855 PCI_VENDOR_ID_HP, 0x1100)
6856 },
6857 {
6858 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6859 PCI_VENDOR_ID_HP, 0x1101)
6860 },
6861 {
6862 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6863 PCI_VENDOR_ID_HP, 0x1102)
6864 },
6865 {
6866 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6867 PCI_VENDOR_ID_HP, 0x1150)
6868 },
6869 {
6870 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
6871 PCI_ANY_ID, PCI_ANY_ID)
6872 },
6873 { 0 }
6874};
6875
6876MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
6877
6878static struct pci_driver pqi_pci_driver = {
6879 .name = DRIVER_NAME_SHORT,
6880 .id_table = pqi_pci_id_table,
6881 .probe = pqi_pci_probe,
6882 .remove = pqi_pci_remove,
6883 .shutdown = pqi_shutdown,
061ef06a
KB		 6884#if defined(CONFIG_PM)
6885 .suspend = pqi_suspend,
6886 .resume = pqi_resume,
6887#endif
6c223761
KB		 6888};
6889
6890static int __init pqi_init(void)
6891{
6892 int rc;
6893
6894 pr_info(DRIVER_NAME "\n");
6895
6896 pqi_sas_transport_template =
6897 sas_attach_transport(&pqi_sas_transport_functions);
6898 if (!pqi_sas_transport_template)
6899 return -ENODEV;
6900
3c50976f
KB		 6901 pqi_process_module_params();
6902
6c223761
KB		 6903 rc = pci_register_driver(&pqi_pci_driver);
6904 if (rc)
6905 sas_release_transport(pqi_sas_transport_template);
6906
6907 return rc;
6908}
6909
6910static void __exit pqi_cleanup(void)
6911{
6912 pci_unregister_driver(&pqi_pci_driver);
6913 sas_release_transport(pqi_sas_transport_template);
6914}
6915
6916module_init(pqi_init);
6917module_exit(pqi_cleanup);
6918
6919static void __attribute__((unused)) verify_structures(void)
6920{
6921 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
6922 sis_host_to_ctrl_doorbell) != 0x20);
6923 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
6924 sis_interrupt_mask) != 0x34);
6925 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
6926 sis_ctrl_to_host_doorbell) != 0x9c);
6927 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
6928 sis_ctrl_to_host_doorbell_clear) != 0xa0);
ff6abb73
KB		 6929 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
6930 sis_driver_scratch) != 0xb0);
6c223761
KB		 6931 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
6932 sis_firmware_status) != 0xbc);
6933 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
6934 sis_mailbox) != 0x1000);
6935 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
6936 pqi_registers) != 0x4000);
6937
6938 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
6939 iu_type) != 0x0);
6940 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
6941 iu_length) != 0x2);
6942 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
6943 response_queue_id) != 0x4);
6944 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
6945 work_area) != 0x6);
6946 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
6947
6948 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
6949 status) != 0x0);
6950 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
6951 service_response) != 0x1);
6952 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
6953 data_present) != 0x2);
6954 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
6955 reserved) != 0x3);
6956 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
6957 residual_count) != 0x4);
6958 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
6959 data_length) != 0x8);
6960 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
6961 reserved1) != 0xa);
6962 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
6963 data) != 0xc);
6964 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
6965
6966 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6967 data_in_result) != 0x0);
6968 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6969 data_out_result) != 0x1);
6970 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6971 reserved) != 0x2);
6972 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6973 status) != 0x5);
6974 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6975 status_qualifier) != 0x6);
6976 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6977 sense_data_length) != 0x8);
6978 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6979 response_data_length) != 0xa);
6980 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6981 data_in_transferred) != 0xc);
6982 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6983 data_out_transferred) != 0x10);
6984 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
6985 data) != 0x14);
6986 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
6987
6988 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
6989 signature) != 0x0);
6990 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
6991 function_and_status_code) != 0x8);
6992 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
6993 max_admin_iq_elements) != 0x10);
6994 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
6995 max_admin_oq_elements) != 0x11);
6996 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
6997 admin_iq_element_length) != 0x12);
6998 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
6999 admin_oq_element_length) != 0x13);
7000 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7001 max_reset_timeout) != 0x14);
7002 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7003 legacy_intx_status) != 0x18);
7004 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7005 legacy_intx_mask_set) != 0x1c);
7006 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7007 legacy_intx_mask_clear) != 0x20);
7008 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7009 device_status) != 0x40);
7010 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7011 admin_iq_pi_offset) != 0x48);
7012 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7013 admin_oq_ci_offset) != 0x50);
7014 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7015 admin_iq_element_array_addr) != 0x58);
7016 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7017 admin_oq_element_array_addr) != 0x60);
7018 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7019 admin_iq_ci_addr) != 0x68);
7020 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7021 admin_oq_pi_addr) != 0x70);
7022 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7023 admin_iq_num_elements) != 0x78);
7024 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7025 admin_oq_num_elements) != 0x79);
7026 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7027 admin_queue_int_msg_num) != 0x7a);
7028 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7029 device_error) != 0x80);
7030 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7031 error_details) != 0x88);
7032 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7033 device_reset) != 0x90);
7034 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
7035 power_action) != 0x94);
7036 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
7037
7038 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7039 header.iu_type) != 0);
7040 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7041 header.iu_length) != 2);
7042 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7043 header.work_area) != 6);
7044 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7045 request_id) != 8);
7046 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7047 function_code) != 10);
7048 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7049 data.report_device_capability.buffer_length) != 44);
7050 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7051 data.report_device_capability.sg_descriptor) != 48);
7052 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7053 data.create_operational_iq.queue_id) != 12);
7054 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7055 data.create_operational_iq.element_array_addr) != 16);
7056 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7057 data.create_operational_iq.ci_addr) != 24);
7058 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7059 data.create_operational_iq.num_elements) != 32);
7060 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7061 data.create_operational_iq.element_length) != 34);
7062 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7063 data.create_operational_iq.queue_protocol) != 36);
7064 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7065 data.create_operational_oq.queue_id) != 12);
7066 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7067 data.create_operational_oq.element_array_addr) != 16);
7068 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7069 data.create_operational_oq.pi_addr) != 24);
7070 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7071 data.create_operational_oq.num_elements) != 32);
7072 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7073 data.create_operational_oq.element_length) != 34);
7074 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7075 data.create_operational_oq.queue_protocol) != 36);
7076 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7077 data.create_operational_oq.int_msg_num) != 40);
7078 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7079 data.create_operational_oq.coalescing_count) != 42);
7080 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7081 data.create_operational_oq.min_coalescing_time) != 44);
7082 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7083 data.create_operational_oq.max_coalescing_time) != 48);
7084 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
7085 data.delete_operational_queue.queue_id) != 12);
7086 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
7087 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7088 data.create_operational_iq) != 64 - 11);
7089 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7090 data.create_operational_oq) != 64 - 11);
7091 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
7092 data.delete_operational_queue) != 64 - 11);
7093
7094 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7095 header.iu_type) != 0);
7096 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7097 header.iu_length) != 2);
7098 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7099 header.work_area) != 6);
7100 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7101 request_id) != 8);
7102 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7103 function_code) != 10);
7104 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7105 status) != 11);
7106 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7107 data.create_operational_iq.status_descriptor) != 12);
7108 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7109 data.create_operational_iq.iq_pi_offset) != 16);
7110 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7111 data.create_operational_oq.status_descriptor) != 12);
7112 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
7113 data.create_operational_oq.oq_ci_offset) != 16);
7114 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
7115
7116 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7117 header.iu_type) != 0);
7118 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7119 header.iu_length) != 2);
7120 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7121 header.response_queue_id) != 4);
7122 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7123 header.work_area) != 6);
7124 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7125 request_id) != 8);
7126 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7127 nexus_id) != 10);
7128 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7129 buffer_length) != 12);
7130 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7131 lun_number) != 16);
7132 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7133 protocol_specific) != 24);
7134 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7135 error_index) != 27);
7136 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7137 cdb) != 32);
7138 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
7139 sg_descriptors) != 64);
7140 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
7141 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
7142
7143 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7144 header.iu_type) != 0);
7145 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7146 header.iu_length) != 2);
7147 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7148 header.response_queue_id) != 4);
7149 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7150 header.work_area) != 6);
7151 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7152 request_id) != 8);
7153 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7154 nexus_id) != 12);
7155 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7156 buffer_length) != 16);
7157 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7158 data_encryption_key_index) != 22);
7159 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7160 encrypt_tweak_lower) != 24);
7161 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7162 encrypt_tweak_upper) != 28);
7163 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7164 cdb) != 32);
7165 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7166 error_index) != 48);
7167 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7168 num_sg_descriptors) != 50);
7169 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7170 cdb_length) != 51);
7171 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7172 lun_number) != 52);
7173 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
7174 sg_descriptors) != 64);
7175 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
7176 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
7177
7178 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7179 header.iu_type) != 0);
7180 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7181 header.iu_length) != 2);
7182 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7183 request_id) != 8);
7184 BUILD_BUG_ON(offsetof(struct pqi_io_response,
7185 error_index) != 10);
7186
7187 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7188 header.iu_type) != 0);
7189 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7190 header.iu_length) != 2);
7191 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7192 header.response_queue_id) != 4);
7193 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7194 request_id) != 8);
7195 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7196 data.report_event_configuration.buffer_length) != 12);
7197 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7198 data.report_event_configuration.sg_descriptors) != 16);
7199 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7200 data.set_event_configuration.global_event_oq_id) != 10);
7201 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7202 data.set_event_configuration.buffer_length) != 12);
7203 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
7204 data.set_event_configuration.sg_descriptors) != 16);
7205
7206 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
7207 max_inbound_iu_length) != 6);
7208 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
7209 max_outbound_iu_length) != 14);
7210 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
7211
7212 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7213 data_length) != 0);
7214 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7215 iq_arbitration_priority_support_bitmask) != 8);
7216 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7217 maximum_aw_a) != 9);
7218 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7219 maximum_aw_b) != 10);
7220 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7221 maximum_aw_c) != 11);
7222 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7223 max_inbound_queues) != 16);
7224 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7225 max_elements_per_iq) != 18);
7226 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7227 max_iq_element_length) != 24);
7228 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7229 min_iq_element_length) != 26);
7230 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7231 max_outbound_queues) != 30);
7232 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7233 max_elements_per_oq) != 32);
7234 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7235 intr_coalescing_time_granularity) != 34);
7236 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7237 max_oq_element_length) != 36);
7238 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7239 min_oq_element_length) != 38);
7240 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
7241 iu_layer_descriptors) != 64);
7242 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
7243
7244 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
7245 event_type) != 0);
7246 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
7247 oq_id) != 2);
7248 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
7249
7250 BUILD_BUG_ON(offsetof(struct pqi_event_config,
7251 num_event_descriptors) != 2);
7252 BUILD_BUG_ON(offsetof(struct pqi_event_config,
7253 descriptors) != 4);
7254
061ef06a
KB		 7255 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
7256 ARRAY_SIZE(pqi_supported_event_types));
7257
6c223761
KB		 7258 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7259 header.iu_type) != 0);
7260 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7261 header.iu_length) != 2);
7262 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7263 event_type) != 8);
7264 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7265 event_id) != 10);
7266 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7267 additional_event_id) != 12);
7268 BUILD_BUG_ON(offsetof(struct pqi_event_response,
7269 data) != 16);
7270 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
7271
7272 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7273 header.iu_type) != 0);
7274 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7275 header.iu_length) != 2);
7276 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7277 event_type) != 8);
7278 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7279 event_id) != 10);
7280 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
7281 additional_event_id) != 12);
7282 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
7283
7284 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7285 header.iu_type) != 0);
7286 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7287 header.iu_length) != 2);
7288 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7289 request_id) != 8);
7290 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7291 nexus_id) != 10);
7292 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7293 lun_number) != 16);
7294 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7295 protocol_specific) != 24);
7296 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7297 outbound_queue_id_to_manage) != 26);
7298 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7299 request_id_to_manage) != 28);
7300 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
7301 task_management_function) != 30);
7302 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
7303
7304 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7305 header.iu_type) != 0);
7306 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7307 header.iu_length) != 2);
7308 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7309 request_id) != 8);
7310 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7311 nexus_id) != 10);
7312 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7313 additional_response_info) != 12);
7314 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
7315 response_code) != 15);
7316 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
7317
7318 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7319 configured_logical_drive_count) != 0);
7320 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7321 configuration_signature) != 1);
7322 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7323 firmware_version) != 5);
7324 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7325 extended_logical_unit_count) != 154);
7326 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7327 firmware_build_number) != 190);
7328 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
7329 controller_mode) != 292);
7330
1be42f46
KB		 7331 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7332 phys_bay_in_box) != 115);
7333 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7334 device_type) != 120);
7335 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7336 redundant_path_present_map) != 1736);
7337 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7338 active_path_number) != 1738);
7339 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7340 alternate_paths_phys_connector) != 1739);
7341 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7342 alternate_paths_phys_box_on_port) != 1755);
7343 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
7344 current_queue_depth_limit) != 1796);
7345 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
7346
6c223761
KB		 7347 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
7348 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
7349 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
7350 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7351 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
7352 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7353 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
7354 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
7355 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7356 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
7357 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
7358 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
7359
7360 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
d727a776
KB		 7361 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
7362 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
6c223761 7363}
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