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