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mic: vop: Fix use-after-free on remove
[linux/fpc-iii.git] / drivers / scsi / smartpqi / smartpqi_init.c
blobf564af8949e8694673043e506b3b5a9fbdcf7c3c
1 /*
2 * driver for Microsemi PQI-based storage controllers
3 * Copyright (c) 2016-2017 Microsemi Corporation
4 * Copyright (c) 2016 PMC-Sierra, Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
14 *
15 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
16 *
17 */
18
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/pci.h>
22 #include <linux/delay.h>
23 #include <linux/interrupt.h>
24 #include <linux/sched.h>
25 #include <linux/rtc.h>
26 #include <linux/bcd.h>
27 #include <linux/reboot.h>
28 #include <linux/cciss_ioctl.h>
29 #include <linux/blk-mq-pci.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_cmnd.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_eh.h>
34 #include <scsi/scsi_transport_sas.h>
35 #include <asm/unaligned.h>
36 #include "smartpqi.h"
37 #include "smartpqi_sis.h"
38
39 #if !defined(BUILD_TIMESTAMP)
40 #define BUILD_TIMESTAMP
41 #endif
42
43 #define DRIVER_VERSION "1.2.4-070"
44 #define DRIVER_MAJOR 1
45 #define DRIVER_MINOR 2
46 #define DRIVER_RELEASE 4
47 #define DRIVER_REVISION 70
48
49 #define DRIVER_NAME "Microsemi PQI Driver (v" \
50 DRIVER_VERSION BUILD_TIMESTAMP ")"
51 #define DRIVER_NAME_SHORT "smartpqi"
52
53 #define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor))
54
55 MODULE_AUTHOR("Microsemi");
56 MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version "
57 DRIVER_VERSION);
58 MODULE_SUPPORTED_DEVICE("Microsemi Smart Family Controllers");
59 MODULE_VERSION(DRIVER_VERSION);
60 MODULE_LICENSE("GPL");
61
62 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info);
63 static void pqi_ctrl_offline_worker(struct work_struct *work);
64 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info);
65 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
66 static void pqi_scan_start(struct Scsi_Host *shost);
67 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
68 struct pqi_queue_group *queue_group, enum pqi_io_path path,
69 struct pqi_io_request *io_request);
70 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
71 struct pqi_iu_header *request, unsigned int flags,
72 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs);
73 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
74 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
75 unsigned int cdb_length, struct pqi_queue_group *queue_group,
76 struct pqi_encryption_info *encryption_info, bool raid_bypass);
77 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info);
78 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info);
79 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info);
80 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
81 u32 bytes_requested);
82 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info);
83 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info);
84 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
85 struct pqi_scsi_dev *device, unsigned long timeout_secs);
86
87 /* for flags argument to pqi_submit_raid_request_synchronous() */
88 #define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
89
90 static struct scsi_transport_template *pqi_sas_transport_template;
91
92 static atomic_t pqi_controller_count = ATOMIC_INIT(0);
93
94 enum pqi_lockup_action {
95 NONE,
96 REBOOT,
97 PANIC
98 };
99
100 static enum pqi_lockup_action pqi_lockup_action = NONE;
101
102 static struct {
103 enum pqi_lockup_action action;
104 char *name;
105 } pqi_lockup_actions[] = {
106 {
107 .action = NONE,
108 .name = "none",
109 },
110 {
111 .action = REBOOT,
112 .name = "reboot",
113 },
114 {
115 .action = PANIC,
116 .name = "panic",
117 },
118 };
119
120 static unsigned int pqi_supported_event_types[] = {
121 PQI_EVENT_TYPE_HOTPLUG,
122 PQI_EVENT_TYPE_HARDWARE,
123 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
124 PQI_EVENT_TYPE_LOGICAL_DEVICE,
125 PQI_EVENT_TYPE_OFA,
126 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
127 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
128 };
129
130 static int pqi_disable_device_id_wildcards;
131 module_param_named(disable_device_id_wildcards,
132 pqi_disable_device_id_wildcards, int, 0644);
133 MODULE_PARM_DESC(disable_device_id_wildcards,
134 "Disable device ID wildcards.");
135
136 static int pqi_disable_heartbeat;
137 module_param_named(disable_heartbeat,
138 pqi_disable_heartbeat, int, 0644);
139 MODULE_PARM_DESC(disable_heartbeat,
140 "Disable heartbeat.");
141
142 static int pqi_disable_ctrl_shutdown;
143 module_param_named(disable_ctrl_shutdown,
144 pqi_disable_ctrl_shutdown, int, 0644);
145 MODULE_PARM_DESC(disable_ctrl_shutdown,
146 "Disable controller shutdown when controller locked up.");
147
148 static char *pqi_lockup_action_param;
149 module_param_named(lockup_action,
150 pqi_lockup_action_param, charp, 0644);
151 MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
152 "\t\tSupported: none, reboot, panic\n"
153 "\t\tDefault: none");
154
155 static char *raid_levels[] = {
156 "RAID-0",
157 "RAID-4",
158 "RAID-1(1+0)",
159 "RAID-5",
160 "RAID-5+1",
161 "RAID-ADG",
162 "RAID-1(ADM)",
163 };
164
165 static char *pqi_raid_level_to_string(u8 raid_level)
166 {
167 if (raid_level < ARRAY_SIZE(raid_levels))
168 return raid_levels[raid_level];
169
170 return "RAID UNKNOWN";
171 }
172
173 #define SA_RAID_0 0
174 #define SA_RAID_4 1
175 #define SA_RAID_1 2 /* also used for RAID 10 */
176 #define SA_RAID_5 3 /* also used for RAID 50 */
177 #define SA_RAID_51 4
178 #define SA_RAID_6 5 /* also used for RAID 60 */
179 #define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
180 #define SA_RAID_MAX SA_RAID_ADM
181 #define SA_RAID_UNKNOWN 0xff
182
183 static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
184 {
185 pqi_prep_for_scsi_done(scmd);
186 scmd->scsi_done(scmd);
187 }
188
189 static inline void pqi_disable_write_same(struct scsi_device *sdev)
190 {
191 sdev->no_write_same = 1;
192 }
193
194 static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
195 {
196 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
197 }
198
199 static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
200 {
201 return !device->is_physical_device;
202 }
203
204 static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
205 {
206 return scsi3addr[2] != 0;
207 }
208
209 static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
210 {
211 if (ctrl_info->controller_online)
212 if (!sis_is_firmware_running(ctrl_info))
213 pqi_take_ctrl_offline(ctrl_info);
214 }
215
216 static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
217 {
218 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
219 }
220
221 static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
222 struct pqi_ctrl_info *ctrl_info)
223 {
224 return sis_read_driver_scratch(ctrl_info);
225 }
226
227 static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
228 enum pqi_ctrl_mode mode)
229 {
230 sis_write_driver_scratch(ctrl_info, mode);
231 }
232
233 static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
234 {
235 ctrl_info->block_requests = true;
236 scsi_block_requests(ctrl_info->scsi_host);
237 }
238
239 static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
240 {
241 ctrl_info->block_requests = false;
242 wake_up_all(&ctrl_info->block_requests_wait);
243 pqi_retry_raid_bypass_requests(ctrl_info);
244 scsi_unblock_requests(ctrl_info->scsi_host);
245 }
246
247 static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
248 unsigned long timeout_msecs)
249 {
250 unsigned long remaining_msecs;
251
252 if (!pqi_ctrl_blocked(ctrl_info))
253 return timeout_msecs;
254
255 atomic_inc(&ctrl_info->num_blocked_threads);
256
257 if (timeout_msecs == NO_TIMEOUT) {
258 wait_event(ctrl_info->block_requests_wait,
259 !pqi_ctrl_blocked(ctrl_info));
260 remaining_msecs = timeout_msecs;
261 } else {
262 unsigned long remaining_jiffies;
263
264 remaining_jiffies =
265 wait_event_timeout(ctrl_info->block_requests_wait,
266 !pqi_ctrl_blocked(ctrl_info),
267 msecs_to_jiffies(timeout_msecs));
268 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
269 }
270
271 atomic_dec(&ctrl_info->num_blocked_threads);
272
273 return remaining_msecs;
274 }
275
276 static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
277 {
278 while (atomic_read(&ctrl_info->num_busy_threads) >
279 atomic_read(&ctrl_info->num_blocked_threads))
280 usleep_range(1000, 2000);
281 }
282
283 static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
284 {
285 return device->device_offline;
286 }
287
288 static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
289 {
290 device->in_reset = true;
291 }
292
293 static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
294 {
295 device->in_reset = false;
296 }
297
298 static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
299 {
300 return device->in_reset;
301 }
302
303 static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info)
304 {
305 ctrl_info->in_ofa = true;
306 }
307
308 static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info)
309 {
310 ctrl_info->in_ofa = false;
311 }
312
313 static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info)
314 {
315 return ctrl_info->in_ofa;
316 }
317
318 static inline void pqi_device_remove_start(struct pqi_scsi_dev *device)
319 {
320 device->in_remove = true;
321 }
322
323 static inline bool pqi_device_in_remove(struct pqi_ctrl_info *ctrl_info,
324 struct pqi_scsi_dev *device)
325 {
326 return device->in_remove && !ctrl_info->in_shutdown;
327 }
328
329 static inline void pqi_schedule_rescan_worker_with_delay(
330 struct pqi_ctrl_info *ctrl_info, unsigned long delay)
331 {
332 if (pqi_ctrl_offline(ctrl_info))
333 return;
334 if (pqi_ctrl_in_ofa(ctrl_info))
335 return;
336
337 schedule_delayed_work(&ctrl_info->rescan_work, delay);
338 }
339
340 static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
341 {
342 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
343 }
344
345 #define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ)
346
347 static inline void pqi_schedule_rescan_worker_delayed(
348 struct pqi_ctrl_info *ctrl_info)
349 {
350 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
351 }
352
353 static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
354 {
355 cancel_delayed_work_sync(&ctrl_info->rescan_work);
356 }
357
358 static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
359 {
360 if (!ctrl_info->heartbeat_counter)
361 return 0;
362
363 return readl(ctrl_info->heartbeat_counter);
364 }
365
366 static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
367 {
368 if (!ctrl_info->soft_reset_status)
369 return 0;
370
371 return readb(ctrl_info->soft_reset_status);
372 }
373
374 static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info,
375 u8 clear)
376 {
377 u8 status;
378
379 if (!ctrl_info->soft_reset_status)
380 return;
381
382 status = pqi_read_soft_reset_status(ctrl_info);
383 status &= ~clear;
384 writeb(status, ctrl_info->soft_reset_status);
385 }
386
387 static int pqi_map_single(struct pci_dev *pci_dev,
388 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
389 size_t buffer_length, enum dma_data_direction data_direction)
390 {
391 dma_addr_t bus_address;
392
393 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE)
394 return 0;
395
396 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length,
397 data_direction);
398 if (dma_mapping_error(&pci_dev->dev, bus_address))
399 return -ENOMEM;
400
401 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
402 put_unaligned_le32(buffer_length, &sg_descriptor->length);
403 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
404
405 return 0;
406 }
407
408 static void pqi_pci_unmap(struct pci_dev *pci_dev,
409 struct pqi_sg_descriptor *descriptors, int num_descriptors,
410 enum dma_data_direction data_direction)
411 {
412 int i;
413
414 if (data_direction == DMA_NONE)
415 return;
416
417 for (i = 0; i < num_descriptors; i++)
418 dma_unmap_single(&pci_dev->dev,
419 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
420 get_unaligned_le32(&descriptors[i].length),
421 data_direction);
422 }
423
424 static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
425 struct pqi_raid_path_request *request, u8 cmd,
426 u8 *scsi3addr, void *buffer, size_t buffer_length,
427 u16 vpd_page, enum dma_data_direction *dir)
428 {
429 u8 *cdb;
430 size_t cdb_length = buffer_length;
431
432 memset(request, 0, sizeof(*request));
433
434 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
435 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
436 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
437 &request->header.iu_length);
438 put_unaligned_le32(buffer_length, &request->buffer_length);
439 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
440 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
441 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
442
443 cdb = request->cdb;
444
445 switch (cmd) {
446 case INQUIRY:
447 request->data_direction = SOP_READ_FLAG;
448 cdb[0] = INQUIRY;
449 if (vpd_page & VPD_PAGE) {
450 cdb[1] = 0x1;
451 cdb[2] = (u8)vpd_page;
452 }
453 cdb[4] = (u8)cdb_length;
454 break;
455 case CISS_REPORT_LOG:
456 case CISS_REPORT_PHYS:
457 request->data_direction = SOP_READ_FLAG;
458 cdb[0] = cmd;
459 if (cmd == CISS_REPORT_PHYS)
460 cdb[1] = CISS_REPORT_PHYS_EXTENDED;
461 else
462 cdb[1] = CISS_REPORT_LOG_EXTENDED;
463 put_unaligned_be32(cdb_length, &cdb[6]);
464 break;
465 case CISS_GET_RAID_MAP:
466 request->data_direction = SOP_READ_FLAG;
467 cdb[0] = CISS_READ;
468 cdb[1] = CISS_GET_RAID_MAP;
469 put_unaligned_be32(cdb_length, &cdb[6]);
470 break;
471 case SA_FLUSH_CACHE:
472 request->data_direction = SOP_WRITE_FLAG;
473 cdb[0] = BMIC_WRITE;
474 cdb[6] = BMIC_FLUSH_CACHE;
475 put_unaligned_be16(cdb_length, &cdb[7]);
476 break;
477 case BMIC_SENSE_DIAG_OPTIONS:
478 cdb_length = 0;
479 /* fall through */
480 case BMIC_IDENTIFY_CONTROLLER:
481 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
482 request->data_direction = SOP_READ_FLAG;
483 cdb[0] = BMIC_READ;
484 cdb[6] = cmd;
485 put_unaligned_be16(cdb_length, &cdb[7]);
486 break;
487 case BMIC_SET_DIAG_OPTIONS:
488 cdb_length = 0;
489 /* fall through */
490 case BMIC_WRITE_HOST_WELLNESS:
491 request->data_direction = SOP_WRITE_FLAG;
492 cdb[0] = BMIC_WRITE;
493 cdb[6] = cmd;
494 put_unaligned_be16(cdb_length, &cdb[7]);
495 break;
496 case BMIC_CSMI_PASSTHRU:
497 request->data_direction = SOP_BIDIRECTIONAL;
498 cdb[0] = BMIC_WRITE;
499 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU;
500 cdb[6] = cmd;
501 put_unaligned_be16(cdb_length, &cdb[7]);
502 break;
503 default:
504 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n",
505 cmd);
506 break;
507 }
508
509 switch (request->data_direction) {
510 case SOP_READ_FLAG:
511 *dir = DMA_FROM_DEVICE;
512 break;
513 case SOP_WRITE_FLAG:
514 *dir = DMA_TO_DEVICE;
515 break;
516 case SOP_NO_DIRECTION_FLAG:
517 *dir = DMA_NONE;
518 break;
519 default:
520 *dir = DMA_BIDIRECTIONAL;
521 break;
522 }
523
524 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
525 buffer, buffer_length, *dir);
526 }
527
528 static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
529 {
530 io_request->scmd = NULL;
531 io_request->status = 0;
532 io_request->error_info = NULL;
533 io_request->raid_bypass = false;
534 }
535
536 static struct pqi_io_request *pqi_alloc_io_request(
537 struct pqi_ctrl_info *ctrl_info)
538 {
539 struct pqi_io_request *io_request;
540 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
541
542 while (1) {
543 io_request = &ctrl_info->io_request_pool[i];
544 if (atomic_inc_return(&io_request->refcount) == 1)
545 break;
546 atomic_dec(&io_request->refcount);
547 i = (i + 1) % ctrl_info->max_io_slots;
548 }
549
550 /* benignly racy */
551 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
552
553 pqi_reinit_io_request(io_request);
554
555 return io_request;
556 }
557
558 static void pqi_free_io_request(struct pqi_io_request *io_request)
559 {
560 atomic_dec(&io_request->refcount);
561 }
562
563 static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
564 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
565 struct pqi_raid_error_info *error_info,
566 unsigned long timeout_msecs)
567 {
568 int rc;
569 enum dma_data_direction dir;
570 struct pqi_raid_path_request request;
571
572 rc = pqi_build_raid_path_request(ctrl_info, &request,
573 cmd, scsi3addr, buffer,
574 buffer_length, vpd_page, &dir);
575 if (rc)
576 return rc;
577
578 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
579 0, error_info, timeout_msecs);
580
581 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
582 return rc;
583 }
584
585 /* Helper functions for pqi_send_scsi_raid_request */
586
587 static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
588 u8 cmd, void *buffer, size_t buffer_length)
589 {
590 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
591 buffer, buffer_length, 0, NULL, NO_TIMEOUT);
592 }
593
594 static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
595 u8 cmd, void *buffer, size_t buffer_length,
596 struct pqi_raid_error_info *error_info)
597 {
598 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
599 buffer, buffer_length, 0, error_info, NO_TIMEOUT);
600 }
601
602
603 static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
604 struct bmic_identify_controller *buffer)
605 {
606 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
607 buffer, sizeof(*buffer));
608 }
609
610 static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
611 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
612 {
613 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
614 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT);
615 }
616
617 static bool pqi_vpd_page_supported(struct pqi_ctrl_info *ctrl_info,
618 u8 *scsi3addr, u16 vpd_page)
619 {
620 int rc;
621 int i;
622 int pages;
623 unsigned char *buf, bufsize;
624
625 buf = kzalloc(256, GFP_KERNEL);
626 if (!buf)
627 return false;
628
629 /* Get the size of the page list first */
630 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
631 VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES,
632 buf, SCSI_VPD_HEADER_SZ);
633 if (rc != 0)
634 goto exit_unsupported;
635
636 pages = buf[3];
637 if ((pages + SCSI_VPD_HEADER_SZ) <= 255)
638 bufsize = pages + SCSI_VPD_HEADER_SZ;
639 else
640 bufsize = 255;
641
642 /* Get the whole VPD page list */
643 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
644 VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES,
645 buf, bufsize);
646 if (rc != 0)
647 goto exit_unsupported;
648
649 pages = buf[3];
650 for (i = 1; i <= pages; i++)
651 if (buf[3 + i] == vpd_page)
652 goto exit_supported;
653
654 exit_unsupported:
655 kfree(buf);
656 return false;
657
658 exit_supported:
659 kfree(buf);
660 return true;
661 }
662
663 static int pqi_get_device_id(struct pqi_ctrl_info *ctrl_info,
664 u8 *scsi3addr, u8 *device_id, int buflen)
665 {
666 int rc;
667 unsigned char *buf;
668
669 if (!pqi_vpd_page_supported(ctrl_info, scsi3addr, SCSI_VPD_DEVICE_ID))
670 return 1; /* function not supported */
671
672 buf = kzalloc(64, GFP_KERNEL);
673 if (!buf)
674 return -ENOMEM;
675
676 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
677 VPD_PAGE | SCSI_VPD_DEVICE_ID,
678 buf, 64);
679 if (rc == 0) {
680 if (buflen > 16)
681 buflen = 16;
682 memcpy(device_id, &buf[SCSI_VPD_DEVICE_ID_IDX], buflen);
683 }
684
685 kfree(buf);
686
687 return rc;
688 }
689
690 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
691 struct pqi_scsi_dev *device,
692 struct bmic_identify_physical_device *buffer,
693 size_t buffer_length)
694 {
695 int rc;
696 enum dma_data_direction dir;
697 u16 bmic_device_index;
698 struct pqi_raid_path_request request;
699
700 rc = pqi_build_raid_path_request(ctrl_info, &request,
701 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
702 buffer_length, 0, &dir);
703 if (rc)
704 return rc;
705
706 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
707 request.cdb[2] = (u8)bmic_device_index;
708 request.cdb[9] = (u8)(bmic_device_index >> 8);
709
710 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
711 0, NULL, NO_TIMEOUT);
712
713 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
714 return rc;
715 }
716
717 static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
718 enum bmic_flush_cache_shutdown_event shutdown_event)
719 {
720 int rc;
721 struct bmic_flush_cache *flush_cache;
722
723 /*
724 * Don't bother trying to flush the cache if the controller is
725 * locked up.
726 */
727 if (pqi_ctrl_offline(ctrl_info))
728 return -ENXIO;
729
730 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
731 if (!flush_cache)
732 return -ENOMEM;
733
734 flush_cache->shutdown_event = shutdown_event;
735
736 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
737 sizeof(*flush_cache));
738
739 kfree(flush_cache);
740
741 return rc;
742 }
743
744 int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info,
745 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length,
746 struct pqi_raid_error_info *error_info)
747 {
748 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU,
749 buffer, buffer_length, error_info);
750 }
751
752 #define PQI_FETCH_PTRAID_DATA (1UL<<31)
753
754 static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
755 {
756 int rc;
757 struct bmic_diag_options *diag;
758
759 diag = kzalloc(sizeof(*diag), GFP_KERNEL);
760 if (!diag)
761 return -ENOMEM;
762
763 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
764 diag, sizeof(*diag));
765 if (rc)
766 goto out;
767
768 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
769
770 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS,
771 diag, sizeof(*diag));
772 out:
773 kfree(diag);
774
775 return rc;
776 }
777
778 static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
779 void *buffer, size_t buffer_length)
780 {
781 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
782 buffer, buffer_length);
783 }
784
785 #pragma pack(1)
786
787 struct bmic_host_wellness_driver_version {
788 u8 start_tag[4];
789 u8 driver_version_tag[2];
790 __le16 driver_version_length;
791 char driver_version[32];
792 u8 dont_write_tag[2];
793 u8 end_tag[2];
794 };
795
796 #pragma pack()
797
798 static int pqi_write_driver_version_to_host_wellness(
799 struct pqi_ctrl_info *ctrl_info)
800 {
801 int rc;
802 struct bmic_host_wellness_driver_version *buffer;
803 size_t buffer_length;
804
805 buffer_length = sizeof(*buffer);
806
807 buffer = kmalloc(buffer_length, GFP_KERNEL);
808 if (!buffer)
809 return -ENOMEM;
810
811 buffer->start_tag[0] = '<';
812 buffer->start_tag[1] = 'H';
813 buffer->start_tag[2] = 'W';
814 buffer->start_tag[3] = '>';
815 buffer->driver_version_tag[0] = 'D';
816 buffer->driver_version_tag[1] = 'V';
817 put_unaligned_le16(sizeof(buffer->driver_version),
818 &buffer->driver_version_length);
819 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
820 sizeof(buffer->driver_version) - 1);
821 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
822 buffer->dont_write_tag[0] = 'D';
823 buffer->dont_write_tag[1] = 'W';
824 buffer->end_tag[0] = 'Z';
825 buffer->end_tag[1] = 'Z';
826
827 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
828
829 kfree(buffer);
830
831 return rc;
832 }
833
834 #pragma pack(1)
835
836 struct bmic_host_wellness_time {
837 u8 start_tag[4];
838 u8 time_tag[2];
839 __le16 time_length;
840 u8 time[8];
841 u8 dont_write_tag[2];
842 u8 end_tag[2];
843 };
844
845 #pragma pack()
846
847 static int pqi_write_current_time_to_host_wellness(
848 struct pqi_ctrl_info *ctrl_info)
849 {
850 int rc;
851 struct bmic_host_wellness_time *buffer;
852 size_t buffer_length;
853 time64_t local_time;
854 unsigned int year;
855 struct tm tm;
856
857 buffer_length = sizeof(*buffer);
858
859 buffer = kmalloc(buffer_length, GFP_KERNEL);
860 if (!buffer)
861 return -ENOMEM;
862
863 buffer->start_tag[0] = '<';
864 buffer->start_tag[1] = 'H';
865 buffer->start_tag[2] = 'W';
866 buffer->start_tag[3] = '>';
867 buffer->time_tag[0] = 'T';
868 buffer->time_tag[1] = 'D';
869 put_unaligned_le16(sizeof(buffer->time),
870 &buffer->time_length);
871
872 local_time = ktime_get_real_seconds();
873 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
874 year = tm.tm_year + 1900;
875
876 buffer->time[0] = bin2bcd(tm.tm_hour);
877 buffer->time[1] = bin2bcd(tm.tm_min);
878 buffer->time[2] = bin2bcd(tm.tm_sec);
879 buffer->time[3] = 0;
880 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
881 buffer->time[5] = bin2bcd(tm.tm_mday);
882 buffer->time[6] = bin2bcd(year / 100);
883 buffer->time[7] = bin2bcd(year % 100);
884
885 buffer->dont_write_tag[0] = 'D';
886 buffer->dont_write_tag[1] = 'W';
887 buffer->end_tag[0] = 'Z';
888 buffer->end_tag[1] = 'Z';
889
890 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
891
892 kfree(buffer);
893
894 return rc;
895 }
896
897 #define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ)
898
899 static void pqi_update_time_worker(struct work_struct *work)
900 {
901 int rc;
902 struct pqi_ctrl_info *ctrl_info;
903
904 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
905 update_time_work);
906
907 if (pqi_ctrl_offline(ctrl_info))
908 return;
909
910 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
911 if (rc)
912 dev_warn(&ctrl_info->pci_dev->dev,
913 "error updating time on controller\n");
914
915 schedule_delayed_work(&ctrl_info->update_time_work,
916 PQI_UPDATE_TIME_WORK_INTERVAL);
917 }
918
919 static inline void pqi_schedule_update_time_worker(
920 struct pqi_ctrl_info *ctrl_info)
921 {
922 schedule_delayed_work(&ctrl_info->update_time_work, 0);
923 }
924
925 static inline void pqi_cancel_update_time_worker(
926 struct pqi_ctrl_info *ctrl_info)
927 {
928 cancel_delayed_work_sync(&ctrl_info->update_time_work);
929 }
930
931 static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
932 void *buffer, size_t buffer_length)
933 {
934 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer,
935 buffer_length);
936 }
937
938 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
939 void **buffer)
940 {
941 int rc;
942 size_t lun_list_length;
943 size_t lun_data_length;
944 size_t new_lun_list_length;
945 void *lun_data = NULL;
946 struct report_lun_header *report_lun_header;
947
948 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
949 if (!report_lun_header) {
950 rc = -ENOMEM;
951 goto out;
952 }
953
954 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header,
955 sizeof(*report_lun_header));
956 if (rc)
957 goto out;
958
959 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
960
961 again:
962 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
963
964 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
965 if (!lun_data) {
966 rc = -ENOMEM;
967 goto out;
968 }
969
970 if (lun_list_length == 0) {
971 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
972 goto out;
973 }
974
975 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
976 if (rc)
977 goto out;
978
979 new_lun_list_length = get_unaligned_be32(
980 &((struct report_lun_header *)lun_data)->list_length);
981
982 if (new_lun_list_length > lun_list_length) {
983 lun_list_length = new_lun_list_length;
984 kfree(lun_data);
985 goto again;
986 }
987
988 out:
989 kfree(report_lun_header);
990
991 if (rc) {
992 kfree(lun_data);
993 lun_data = NULL;
994 }
995
996 *buffer = lun_data;
997
998 return rc;
999 }
1000
1001 static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info,
1002 void **buffer)
1003 {
1004 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS,
1005 buffer);
1006 }
1007
1008 static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info,
1009 void **buffer)
1010 {
1011 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
1012 }
1013
1014 static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
1015 struct report_phys_lun_extended **physdev_list,
1016 struct report_log_lun_extended **logdev_list)
1017 {
1018 int rc;
1019 size_t logdev_list_length;
1020 size_t logdev_data_length;
1021 struct report_log_lun_extended *internal_logdev_list;
1022 struct report_log_lun_extended *logdev_data;
1023 struct report_lun_header report_lun_header;
1024
1025 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
1026 if (rc)
1027 dev_err(&ctrl_info->pci_dev->dev,
1028 "report physical LUNs failed\n");
1029
1030 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
1031 if (rc)
1032 dev_err(&ctrl_info->pci_dev->dev,
1033 "report logical LUNs failed\n");
1034
1035 /*
1036 * Tack the controller itself onto the end of the logical device list.
1037 */
1038
1039 logdev_data = *logdev_list;
1040
1041 if (logdev_data) {
1042 logdev_list_length =
1043 get_unaligned_be32(&logdev_data->header.list_length);
1044 } else {
1045 memset(&report_lun_header, 0, sizeof(report_lun_header));
1046 logdev_data =
1047 (struct report_log_lun_extended *)&report_lun_header;
1048 logdev_list_length = 0;
1049 }
1050
1051 logdev_data_length = sizeof(struct report_lun_header) +
1052 logdev_list_length;
1053
1054 internal_logdev_list = kmalloc(logdev_data_length +
1055 sizeof(struct report_log_lun_extended), GFP_KERNEL);
1056 if (!internal_logdev_list) {
1057 kfree(*logdev_list);
1058 *logdev_list = NULL;
1059 return -ENOMEM;
1060 }
1061
1062 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
1063 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
1064 sizeof(struct report_log_lun_extended_entry));
1065 put_unaligned_be32(logdev_list_length +
1066 sizeof(struct report_log_lun_extended_entry),
1067 &internal_logdev_list->header.list_length);
1068
1069 kfree(*logdev_list);
1070 *logdev_list = internal_logdev_list;
1071
1072 return 0;
1073 }
1074
1075 static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
1076 int bus, int target, int lun)
1077 {
1078 device->bus = bus;
1079 device->target = target;
1080 device->lun = lun;
1081 }
1082
1083 static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
1084 {
1085 u8 *scsi3addr;
1086 u32 lunid;
1087 int bus;
1088 int target;
1089 int lun;
1090
1091 scsi3addr = device->scsi3addr;
1092 lunid = get_unaligned_le32(scsi3addr);
1093
1094 if (pqi_is_hba_lunid(scsi3addr)) {
1095 /* The specified device is the controller. */
1096 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
1097 device->target_lun_valid = true;
1098 return;
1099 }
1100
1101 if (pqi_is_logical_device(device)) {
1102 if (device->is_external_raid_device) {
1103 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
1104 target = (lunid >> 16) & 0x3fff;
1105 lun = lunid & 0xff;
1106 } else {
1107 bus = PQI_RAID_VOLUME_BUS;
1108 target = 0;
1109 lun = lunid & 0x3fff;
1110 }
1111 pqi_set_bus_target_lun(device, bus, target, lun);
1112 device->target_lun_valid = true;
1113 return;
1114 }
1115
1116 /*
1117 * Defer target and LUN assignment for non-controller physical devices
1118 * because the SAS transport layer will make these assignments later.
1119 */
1120 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
1121 }
1122
1123 static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
1124 struct pqi_scsi_dev *device)
1125 {
1126 int rc;
1127 u8 raid_level;
1128 u8 *buffer;
1129
1130 raid_level = SA_RAID_UNKNOWN;
1131
1132 buffer = kmalloc(64, GFP_KERNEL);
1133 if (buffer) {
1134 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1135 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1136 if (rc == 0) {
1137 raid_level = buffer[8];
1138 if (raid_level > SA_RAID_MAX)
1139 raid_level = SA_RAID_UNKNOWN;
1140 }
1141 kfree(buffer);
1142 }
1143
1144 device->raid_level = raid_level;
1145 }
1146
1147 static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1148 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1149 {
1150 char *err_msg;
1151 u32 raid_map_size;
1152 u32 r5or6_blocks_per_row;
1153
1154 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1155
1156 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1157 err_msg = "RAID map too small";
1158 goto bad_raid_map;
1159 }
1160
1161 if (device->raid_level == SA_RAID_1) {
1162 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1163 err_msg = "invalid RAID-1 map";
1164 goto bad_raid_map;
1165 }
1166 } else if (device->raid_level == SA_RAID_ADM) {
1167 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1168 err_msg = "invalid RAID-1(ADM) map";
1169 goto bad_raid_map;
1170 }
1171 } else if ((device->raid_level == SA_RAID_5 ||
1172 device->raid_level == SA_RAID_6) &&
1173 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1174 /* RAID 50/60 */
1175 r5or6_blocks_per_row =
1176 get_unaligned_le16(&raid_map->strip_size) *
1177 get_unaligned_le16(&raid_map->data_disks_per_row);
1178 if (r5or6_blocks_per_row == 0) {
1179 err_msg = "invalid RAID-5 or RAID-6 map";
1180 goto bad_raid_map;
1181 }
1182 }
1183
1184 return 0;
1185
1186 bad_raid_map:
1187 dev_warn(&ctrl_info->pci_dev->dev,
1188 "logical device %08x%08x %s\n",
1189 *((u32 *)&device->scsi3addr),
1190 *((u32 *)&device->scsi3addr[4]), err_msg);
1191
1192 return -EINVAL;
1193 }
1194
1195 static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1196 struct pqi_scsi_dev *device)
1197 {
1198 int rc;
1199 u32 raid_map_size;
1200 struct raid_map *raid_map;
1201
1202 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1203 if (!raid_map)
1204 return -ENOMEM;
1205
1206 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1207 device->scsi3addr, raid_map, sizeof(*raid_map),
1208 0, NULL, NO_TIMEOUT);
1209
1210 if (rc)
1211 goto error;
1212
1213 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1214
1215 if (raid_map_size > sizeof(*raid_map)) {
1216
1217 kfree(raid_map);
1218
1219 raid_map = kmalloc(raid_map_size, GFP_KERNEL);
1220 if (!raid_map)
1221 return -ENOMEM;
1222
1223 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1224 device->scsi3addr, raid_map, raid_map_size,
1225 0, NULL, NO_TIMEOUT);
1226 if (rc)
1227 goto error;
1228
1229 if (get_unaligned_le32(&raid_map->structure_size)
1230 != raid_map_size) {
1231 dev_warn(&ctrl_info->pci_dev->dev,
1232 "Requested %d bytes, received %d bytes",
1233 raid_map_size,
1234 get_unaligned_le32(&raid_map->structure_size));
1235 goto error;
1236 }
1237 }
1238
1239 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1240 if (rc)
1241 goto error;
1242
1243 device->raid_map = raid_map;
1244
1245 return 0;
1246
1247 error:
1248 kfree(raid_map);
1249
1250 return rc;
1251 }
1252
1253 static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
1254 struct pqi_scsi_dev *device)
1255 {
1256 int rc;
1257 u8 *buffer;
1258 u8 bypass_status;
1259
1260 buffer = kmalloc(64, GFP_KERNEL);
1261 if (!buffer)
1262 return;
1263
1264 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1265 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
1266 if (rc)
1267 goto out;
1268
1269 #define RAID_BYPASS_STATUS 4
1270 #define RAID_BYPASS_CONFIGURED 0x1
1271 #define RAID_BYPASS_ENABLED 0x2
1272
1273 bypass_status = buffer[RAID_BYPASS_STATUS];
1274 device->raid_bypass_configured =
1275 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1276 if (device->raid_bypass_configured &&
1277 (bypass_status & RAID_BYPASS_ENABLED) &&
1278 pqi_get_raid_map(ctrl_info, device) == 0)
1279 device->raid_bypass_enabled = true;
1280
1281 out:
1282 kfree(buffer);
1283 }
1284
1285 /*
1286 * Use vendor-specific VPD to determine online/offline status of a volume.
1287 */
1288
1289 static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1290 struct pqi_scsi_dev *device)
1291 {
1292 int rc;
1293 size_t page_length;
1294 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1295 bool volume_offline = true;
1296 u32 volume_flags;
1297 struct ciss_vpd_logical_volume_status *vpd;
1298
1299 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1300 if (!vpd)
1301 goto no_buffer;
1302
1303 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1304 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1305 if (rc)
1306 goto out;
1307
1308 if (vpd->page_code != CISS_VPD_LV_STATUS)
1309 goto out;
1310
1311 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1312 volume_status) + vpd->page_length;
1313 if (page_length < sizeof(*vpd))
1314 goto out;
1315
1316 volume_status = vpd->volume_status;
1317 volume_flags = get_unaligned_be32(&vpd->flags);
1318 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1319
1320 out:
1321 kfree(vpd);
1322 no_buffer:
1323 device->volume_status = volume_status;
1324 device->volume_offline = volume_offline;
1325 }
1326
1327 #define PQI_INQUIRY_PAGE0_RETRIES 3
1328
1329 static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
1330 struct pqi_scsi_dev *device)
1331 {
1332 int rc;
1333 u8 *buffer;
1334 unsigned int retries;
1335
1336 if (device->is_expander_smp_device)
1337 return 0;
1338
1339 buffer = kmalloc(64, GFP_KERNEL);
1340 if (!buffer)
1341 return -ENOMEM;
1342
1343 /* Send an inquiry to the device to see what it is. */
1344 for (retries = 0;;) {
1345 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0,
1346 buffer, 64);
1347 if (rc == 0)
1348 break;
1349 if (pqi_is_logical_device(device) ||
1350 rc != PQI_CMD_STATUS_ABORTED ||
1351 ++retries > PQI_INQUIRY_PAGE0_RETRIES)
1352 goto out;
1353 }
1354
1355 scsi_sanitize_inquiry_string(&buffer[8], 8);
1356 scsi_sanitize_inquiry_string(&buffer[16], 16);
1357
1358 device->devtype = buffer[0] & 0x1f;
1359 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1360 memcpy(device->model, &buffer[16], sizeof(device->model));
1361
1362 if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK) {
1363 if (device->is_external_raid_device) {
1364 device->raid_level = SA_RAID_UNKNOWN;
1365 device->volume_status = CISS_LV_OK;
1366 device->volume_offline = false;
1367 } else {
1368 pqi_get_raid_level(ctrl_info, device);
1369 pqi_get_raid_bypass_status(ctrl_info, device);
1370 pqi_get_volume_status(ctrl_info, device);
1371 }
1372 }
1373
1374 if (pqi_get_device_id(ctrl_info, device->scsi3addr,
1375 device->unique_id, sizeof(device->unique_id)) < 0)
1376 dev_warn(&ctrl_info->pci_dev->dev,
1377 "Can't get device id for scsi %d:%d:%d:%d\n",
1378 ctrl_info->scsi_host->host_no,
1379 device->bus, device->target,
1380 device->lun);
1381
1382 out:
1383 kfree(buffer);
1384
1385 return rc;
1386 }
1387
1388 static void pqi_get_physical_disk_info(struct pqi_ctrl_info *ctrl_info,
1389 struct pqi_scsi_dev *device,
1390 struct bmic_identify_physical_device *id_phys)
1391 {
1392 int rc;
1393
1394 memset(id_phys, 0, sizeof(*id_phys));
1395
1396 rc = pqi_identify_physical_device(ctrl_info, device,
1397 id_phys, sizeof(*id_phys));
1398 if (rc) {
1399 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1400 return;
1401 }
1402
1403 device->queue_depth =
1404 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1405 device->device_type = id_phys->device_type;
1406 device->active_path_index = id_phys->active_path_number;
1407 device->path_map = id_phys->redundant_path_present_map;
1408 memcpy(&device->box,
1409 &id_phys->alternate_paths_phys_box_on_port,
1410 sizeof(device->box));
1411 memcpy(&device->phys_connector,
1412 &id_phys->alternate_paths_phys_connector,
1413 sizeof(device->phys_connector));
1414 device->bay = id_phys->phys_bay_in_box;
1415 }
1416
1417 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1418 struct pqi_scsi_dev *device)
1419 {
1420 char *status;
1421 static const char unknown_state_str[] =
1422 "Volume is in an unknown state (%u)";
1423 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1424
1425 switch (device->volume_status) {
1426 case CISS_LV_OK:
1427 status = "Volume online";
1428 break;
1429 case CISS_LV_FAILED:
1430 status = "Volume failed";
1431 break;
1432 case CISS_LV_NOT_CONFIGURED:
1433 status = "Volume not configured";
1434 break;
1435 case CISS_LV_DEGRADED:
1436 status = "Volume degraded";
1437 break;
1438 case CISS_LV_READY_FOR_RECOVERY:
1439 status = "Volume ready for recovery operation";
1440 break;
1441 case CISS_LV_UNDERGOING_RECOVERY:
1442 status = "Volume undergoing recovery";
1443 break;
1444 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1445 status = "Wrong physical drive was replaced";
1446 break;
1447 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1448 status = "A physical drive not properly connected";
1449 break;
1450 case CISS_LV_HARDWARE_OVERHEATING:
1451 status = "Hardware is overheating";
1452 break;
1453 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1454 status = "Hardware has overheated";
1455 break;
1456 case CISS_LV_UNDERGOING_EXPANSION:
1457 status = "Volume undergoing expansion";
1458 break;
1459 case CISS_LV_NOT_AVAILABLE:
1460 status = "Volume waiting for transforming volume";
1461 break;
1462 case CISS_LV_QUEUED_FOR_EXPANSION:
1463 status = "Volume queued for expansion";
1464 break;
1465 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1466 status = "Volume disabled due to SCSI ID conflict";
1467 break;
1468 case CISS_LV_EJECTED:
1469 status = "Volume has been ejected";
1470 break;
1471 case CISS_LV_UNDERGOING_ERASE:
1472 status = "Volume undergoing background erase";
1473 break;
1474 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1475 status = "Volume ready for predictive spare rebuild";
1476 break;
1477 case CISS_LV_UNDERGOING_RPI:
1478 status = "Volume undergoing rapid parity initialization";
1479 break;
1480 case CISS_LV_PENDING_RPI:
1481 status = "Volume queued for rapid parity initialization";
1482 break;
1483 case CISS_LV_ENCRYPTED_NO_KEY:
1484 status = "Encrypted volume inaccessible - key not present";
1485 break;
1486 case CISS_LV_UNDERGOING_ENCRYPTION:
1487 status = "Volume undergoing encryption process";
1488 break;
1489 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1490 status = "Volume undergoing encryption re-keying process";
1491 break;
1492 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1493 status = "Volume encrypted but encryption is disabled";
1494 break;
1495 case CISS_LV_PENDING_ENCRYPTION:
1496 status = "Volume pending migration to encrypted state";
1497 break;
1498 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1499 status = "Volume pending encryption rekeying";
1500 break;
1501 case CISS_LV_NOT_SUPPORTED:
1502 status = "Volume not supported on this controller";
1503 break;
1504 case CISS_LV_STATUS_UNAVAILABLE:
1505 status = "Volume status not available";
1506 break;
1507 default:
1508 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1509 unknown_state_str, device->volume_status);
1510 status = unknown_state_buffer;
1511 break;
1512 }
1513
1514 dev_info(&ctrl_info->pci_dev->dev,
1515 "scsi %d:%d:%d:%d %s\n",
1516 ctrl_info->scsi_host->host_no,
1517 device->bus, device->target, device->lun, status);
1518 }
1519
1520 static void pqi_rescan_worker(struct work_struct *work)
1521 {
1522 struct pqi_ctrl_info *ctrl_info;
1523
1524 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1525 rescan_work);
1526
1527 pqi_scan_scsi_devices(ctrl_info);
1528 }
1529
1530 static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1531 struct pqi_scsi_dev *device)
1532 {
1533 int rc;
1534
1535 if (pqi_is_logical_device(device))
1536 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1537 device->target, device->lun);
1538 else
1539 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1540
1541 return rc;
1542 }
1543
1544 #define PQI_PENDING_IO_TIMEOUT_SECS 20
1545
1546 static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info,
1547 struct pqi_scsi_dev *device)
1548 {
1549 int rc;
1550
1551 pqi_device_remove_start(device);
1552
1553 rc = pqi_device_wait_for_pending_io(ctrl_info, device,
1554 PQI_PENDING_IO_TIMEOUT_SECS);
1555 if (rc)
1556 dev_err(&ctrl_info->pci_dev->dev,
1557 "scsi %d:%d:%d:%d removing device with %d outstanding commands\n",
1558 ctrl_info->scsi_host->host_no, device->bus,
1559 device->target, device->lun,
1560 atomic_read(&device->scsi_cmds_outstanding));
1561
1562 if (pqi_is_logical_device(device))
1563 scsi_remove_device(device->sdev);
1564 else
1565 pqi_remove_sas_device(device);
1566 }
1567
1568 /* Assumes the SCSI device list lock is held. */
1569
1570 static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1571 int bus, int target, int lun)
1572 {
1573 struct pqi_scsi_dev *device;
1574
1575 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1576 scsi_device_list_entry)
1577 if (device->bus == bus && device->target == target &&
1578 device->lun == lun)
1579 return device;
1580
1581 return NULL;
1582 }
1583
1584 static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1,
1585 struct pqi_scsi_dev *dev2)
1586 {
1587 if (dev1->is_physical_device != dev2->is_physical_device)
1588 return false;
1589
1590 if (dev1->is_physical_device)
1591 return dev1->wwid == dev2->wwid;
1592
1593 return memcmp(dev1->volume_id, dev2->volume_id,
1594 sizeof(dev1->volume_id)) == 0;
1595 }
1596
1597 enum pqi_find_result {
1598 DEVICE_NOT_FOUND,
1599 DEVICE_CHANGED,
1600 DEVICE_SAME,
1601 };
1602
1603 static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
1604 struct pqi_scsi_dev *device_to_find,
1605 struct pqi_scsi_dev **matching_device)
1606 {
1607 struct pqi_scsi_dev *device;
1608
1609 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1610 scsi_device_list_entry) {
1611 if (pqi_scsi3addr_equal(device_to_find->scsi3addr,
1612 device->scsi3addr)) {
1613 *matching_device = device;
1614 if (pqi_device_equal(device_to_find, device)) {
1615 if (device_to_find->volume_offline)
1616 return DEVICE_CHANGED;
1617 return DEVICE_SAME;
1618 }
1619 return DEVICE_CHANGED;
1620 }
1621 }
1622
1623 return DEVICE_NOT_FOUND;
1624 }
1625
1626 static inline const char *pqi_device_type(struct pqi_scsi_dev *device)
1627 {
1628 if (device->is_expander_smp_device)
1629 return "Enclosure SMP ";
1630
1631 return scsi_device_type(device->devtype);
1632 }
1633
1634 #define PQI_DEV_INFO_BUFFER_LENGTH 128
1635
1636 static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1637 char *action, struct pqi_scsi_dev *device)
1638 {
1639 ssize_t count;
1640 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1641
1642 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1643 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1644
1645 if (device->target_lun_valid)
1646 count += snprintf(buffer + count,
1647 PQI_DEV_INFO_BUFFER_LENGTH - count,
1648 "%d:%d",
1649 device->target,
1650 device->lun);
1651 else
1652 count += snprintf(buffer + count,
1653 PQI_DEV_INFO_BUFFER_LENGTH - count,
1654 "-:-");
1655
1656 if (pqi_is_logical_device(device))
1657 count += snprintf(buffer + count,
1658 PQI_DEV_INFO_BUFFER_LENGTH - count,
1659 " %08x%08x",
1660 *((u32 *)&device->scsi3addr),
1661 *((u32 *)&device->scsi3addr[4]));
1662 else
1663 count += snprintf(buffer + count,
1664 PQI_DEV_INFO_BUFFER_LENGTH - count,
1665 " %016llx", device->sas_address);
1666
1667 count += snprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
1668 " %s %.8s %.16s ",
1669 pqi_device_type(device),
1670 device->vendor,
1671 device->model);
1672
1673 if (pqi_is_logical_device(device)) {
1674 if (device->devtype == TYPE_DISK)
1675 count += snprintf(buffer + count,
1676 PQI_DEV_INFO_BUFFER_LENGTH - count,
1677 "SSDSmartPathCap%c En%c %-12s",
1678 device->raid_bypass_configured ? '+' : '-',
1679 device->raid_bypass_enabled ? '+' : '-',
1680 pqi_raid_level_to_string(device->raid_level));
1681 } else {
1682 count += snprintf(buffer + count,
1683 PQI_DEV_INFO_BUFFER_LENGTH - count,
1684 "AIO%c", device->aio_enabled ? '+' : '-');
1685 if (device->devtype == TYPE_DISK ||
1686 device->devtype == TYPE_ZBC)
1687 count += snprintf(buffer + count,
1688 PQI_DEV_INFO_BUFFER_LENGTH - count,
1689 " qd=%-6d", device->queue_depth);
1690 }
1691
1692 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
1693 }
1694
1695 /* Assumes the SCSI device list lock is held. */
1696
1697 static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1698 struct pqi_scsi_dev *new_device)
1699 {
1700 existing_device->devtype = new_device->devtype;
1701 existing_device->device_type = new_device->device_type;
1702 existing_device->bus = new_device->bus;
1703 if (new_device->target_lun_valid) {
1704 existing_device->target = new_device->target;
1705 existing_device->lun = new_device->lun;
1706 existing_device->target_lun_valid = true;
1707 }
1708
1709 /* By definition, the scsi3addr and wwid fields are already the same. */
1710
1711 existing_device->is_physical_device = new_device->is_physical_device;
1712 existing_device->is_external_raid_device =
1713 new_device->is_external_raid_device;
1714 existing_device->is_expander_smp_device =
1715 new_device->is_expander_smp_device;
1716 existing_device->aio_enabled = new_device->aio_enabled;
1717 memcpy(existing_device->vendor, new_device->vendor,
1718 sizeof(existing_device->vendor));
1719 memcpy(existing_device->model, new_device->model,
1720 sizeof(existing_device->model));
1721 existing_device->sas_address = new_device->sas_address;
1722 existing_device->raid_level = new_device->raid_level;
1723 existing_device->queue_depth = new_device->queue_depth;
1724 existing_device->aio_handle = new_device->aio_handle;
1725 existing_device->volume_status = new_device->volume_status;
1726 existing_device->active_path_index = new_device->active_path_index;
1727 existing_device->path_map = new_device->path_map;
1728 existing_device->bay = new_device->bay;
1729 memcpy(existing_device->box, new_device->box,
1730 sizeof(existing_device->box));
1731 memcpy(existing_device->phys_connector, new_device->phys_connector,
1732 sizeof(existing_device->phys_connector));
1733 existing_device->offload_to_mirror = 0;
1734 kfree(existing_device->raid_map);
1735 existing_device->raid_map = new_device->raid_map;
1736 existing_device->raid_bypass_configured =
1737 new_device->raid_bypass_configured;
1738 existing_device->raid_bypass_enabled =
1739 new_device->raid_bypass_enabled;
1740 existing_device->device_offline = false;
1741
1742 /* To prevent this from being freed later. */
1743 new_device->raid_map = NULL;
1744 }
1745
1746 static inline void pqi_free_device(struct pqi_scsi_dev *device)
1747 {
1748 if (device) {
1749 kfree(device->raid_map);
1750 kfree(device);
1751 }
1752 }
1753
1754 /*
1755 * Called when exposing a new device to the OS fails in order to re-adjust
1756 * our internal SCSI device list to match the SCSI ML's view.
1757 */
1758
1759 static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1760 struct pqi_scsi_dev *device)
1761 {
1762 unsigned long flags;
1763
1764 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1765 list_del(&device->scsi_device_list_entry);
1766 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1767
1768 /* Allow the device structure to be freed later. */
1769 device->keep_device = false;
1770 }
1771
1772 static inline bool pqi_is_device_added(struct pqi_scsi_dev *device)
1773 {
1774 if (device->is_expander_smp_device)
1775 return device->sas_port != NULL;
1776
1777 return device->sdev != NULL;
1778 }
1779
1780 static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1781 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1782 {
1783 int rc;
1784 unsigned int i;
1785 unsigned long flags;
1786 enum pqi_find_result find_result;
1787 struct pqi_scsi_dev *device;
1788 struct pqi_scsi_dev *next;
1789 struct pqi_scsi_dev *matching_device;
1790 LIST_HEAD(add_list);
1791 LIST_HEAD(delete_list);
1792
1793 /*
1794 * The idea here is to do as little work as possible while holding the
1795 * spinlock. That's why we go to great pains to defer anything other
1796 * than updating the internal device list until after we release the
1797 * spinlock.
1798 */
1799
1800 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1801
1802 /* Assume that all devices in the existing list have gone away. */
1803 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1804 scsi_device_list_entry)
1805 device->device_gone = true;
1806
1807 for (i = 0; i < num_new_devices; i++) {
1808 device = new_device_list[i];
1809
1810 find_result = pqi_scsi_find_entry(ctrl_info, device,
1811 &matching_device);
1812
1813 switch (find_result) {
1814 case DEVICE_SAME:
1815 /*
1816 * The newly found device is already in the existing
1817 * device list.
1818 */
1819 device->new_device = false;
1820 matching_device->device_gone = false;
1821 pqi_scsi_update_device(matching_device, device);
1822 break;
1823 case DEVICE_NOT_FOUND:
1824 /*
1825 * The newly found device is NOT in the existing device
1826 * list.
1827 */
1828 device->new_device = true;
1829 break;
1830 case DEVICE_CHANGED:
1831 /*
1832 * The original device has gone away and we need to add
1833 * the new device.
1834 */
1835 device->new_device = true;
1836 break;
1837 }
1838 }
1839
1840 /* Process all devices that have gone away. */
1841 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1842 scsi_device_list_entry) {
1843 if (device->device_gone) {
1844 list_del(&device->scsi_device_list_entry);
1845 list_add_tail(&device->delete_list_entry, &delete_list);
1846 }
1847 }
1848
1849 /* Process all new devices. */
1850 for (i = 0; i < num_new_devices; i++) {
1851 device = new_device_list[i];
1852 if (!device->new_device)
1853 continue;
1854 if (device->volume_offline)
1855 continue;
1856 list_add_tail(&device->scsi_device_list_entry,
1857 &ctrl_info->scsi_device_list);
1858 list_add_tail(&device->add_list_entry, &add_list);
1859 /* To prevent this device structure from being freed later. */
1860 device->keep_device = true;
1861 }
1862
1863 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1864
1865 if (pqi_ctrl_in_ofa(ctrl_info))
1866 pqi_ctrl_ofa_done(ctrl_info);
1867
1868 /* Remove all devices that have gone away. */
1869 list_for_each_entry_safe(device, next, &delete_list,
1870 delete_list_entry) {
1871 if (device->volume_offline) {
1872 pqi_dev_info(ctrl_info, "offline", device);
1873 pqi_show_volume_status(ctrl_info, device);
1874 } else {
1875 pqi_dev_info(ctrl_info, "removed", device);
1876 }
1877 if (pqi_is_device_added(device))
1878 pqi_remove_device(ctrl_info, device);
1879 list_del(&device->delete_list_entry);
1880 pqi_free_device(device);
1881 }
1882
1883 /*
1884 * Notify the SCSI ML if the queue depth of any existing device has
1885 * changed.
1886 */
1887 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1888 scsi_device_list_entry) {
1889 if (device->sdev && device->queue_depth !=
1890 device->advertised_queue_depth) {
1891 device->advertised_queue_depth = device->queue_depth;
1892 scsi_change_queue_depth(device->sdev,
1893 device->advertised_queue_depth);
1894 }
1895 }
1896
1897 /* Expose any new devices. */
1898 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
1899 if (!pqi_is_device_added(device)) {
1900 pqi_dev_info(ctrl_info, "added", device);
1901 rc = pqi_add_device(ctrl_info, device);
1902 if (rc) {
1903 dev_warn(&ctrl_info->pci_dev->dev,
1904 "scsi %d:%d:%d:%d addition failed, device not added\n",
1905 ctrl_info->scsi_host->host_no,
1906 device->bus, device->target,
1907 device->lun);
1908 pqi_fixup_botched_add(ctrl_info, device);
1909 }
1910 }
1911 }
1912 }
1913
1914 static bool pqi_is_supported_device(struct pqi_scsi_dev *device)
1915 {
1916 bool is_supported;
1917
1918 if (device->is_expander_smp_device)
1919 return true;
1920
1921 is_supported = false;
1922
1923 switch (device->devtype) {
1924 case TYPE_DISK:
1925 case TYPE_ZBC:
1926 case TYPE_TAPE:
1927 case TYPE_MEDIUM_CHANGER:
1928 case TYPE_ENCLOSURE:
1929 is_supported = true;
1930 break;
1931 case TYPE_RAID:
1932 /*
1933 * Only support the HBA controller itself as a RAID
1934 * controller. If it's a RAID controller other than
1935 * the HBA itself (an external RAID controller, for
1936 * example), we don't support it.
1937 */
1938 if (pqi_is_hba_lunid(device->scsi3addr))
1939 is_supported = true;
1940 break;
1941 }
1942
1943 return is_supported;
1944 }
1945
1946 static inline bool pqi_skip_device(u8 *scsi3addr)
1947 {
1948 /* Ignore all masked devices. */
1949 if (MASKED_DEVICE(scsi3addr))
1950 return true;
1951
1952 return false;
1953 }
1954
1955 static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device)
1956 {
1957 if (!device->is_physical_device)
1958 return false;
1959
1960 if (device->is_expander_smp_device)
1961 return true;
1962
1963 switch (device->devtype) {
1964 case TYPE_DISK:
1965 case TYPE_ZBC:
1966 case TYPE_ENCLOSURE:
1967 return true;
1968 }
1969
1970 return false;
1971 }
1972
1973 static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
1974 {
1975 return !device->is_physical_device ||
1976 !pqi_skip_device(device->scsi3addr);
1977 }
1978
1979 static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1980 {
1981 int i;
1982 int rc;
1983 LIST_HEAD(new_device_list_head);
1984 struct report_phys_lun_extended *physdev_list = NULL;
1985 struct report_log_lun_extended *logdev_list = NULL;
1986 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
1987 struct report_log_lun_extended_entry *log_lun_ext_entry;
1988 struct bmic_identify_physical_device *id_phys = NULL;
1989 u32 num_physicals;
1990 u32 num_logicals;
1991 struct pqi_scsi_dev **new_device_list = NULL;
1992 struct pqi_scsi_dev *device;
1993 struct pqi_scsi_dev *next;
1994 unsigned int num_new_devices;
1995 unsigned int num_valid_devices;
1996 bool is_physical_device;
1997 u8 *scsi3addr;
1998 static char *out_of_memory_msg =
1999 "failed to allocate memory, device discovery stopped";
2000
2001 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
2002 if (rc)
2003 goto out;
2004
2005 if (physdev_list)
2006 num_physicals =
2007 get_unaligned_be32(&physdev_list->header.list_length)
2008 / sizeof(physdev_list->lun_entries[0]);
2009 else
2010 num_physicals = 0;
2011
2012 if (logdev_list)
2013 num_logicals =
2014 get_unaligned_be32(&logdev_list->header.list_length)
2015 / sizeof(logdev_list->lun_entries[0]);
2016 else
2017 num_logicals = 0;
2018
2019 if (num_physicals) {
2020 /*
2021 * We need this buffer for calls to pqi_get_physical_disk_info()
2022 * below. We allocate it here instead of inside
2023 * pqi_get_physical_disk_info() because it's a fairly large
2024 * buffer.
2025 */
2026 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
2027 if (!id_phys) {
2028 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2029 out_of_memory_msg);
2030 rc = -ENOMEM;
2031 goto out;
2032 }
2033 }
2034
2035 num_new_devices = num_physicals + num_logicals;
2036
2037 new_device_list = kmalloc_array(num_new_devices,
2038 sizeof(*new_device_list),
2039 GFP_KERNEL);
2040 if (!new_device_list) {
2041 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
2042 rc = -ENOMEM;
2043 goto out;
2044 }
2045
2046 for (i = 0; i < num_new_devices; i++) {
2047 device = kzalloc(sizeof(*device), GFP_KERNEL);
2048 if (!device) {
2049 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2050 out_of_memory_msg);
2051 rc = -ENOMEM;
2052 goto out;
2053 }
2054 list_add_tail(&device->new_device_list_entry,
2055 &new_device_list_head);
2056 }
2057
2058 device = NULL;
2059 num_valid_devices = 0;
2060
2061 for (i = 0; i < num_new_devices; i++) {
2062
2063 if (i < num_physicals) {
2064 is_physical_device = true;
2065 phys_lun_ext_entry = &physdev_list->lun_entries[i];
2066 log_lun_ext_entry = NULL;
2067 scsi3addr = phys_lun_ext_entry->lunid;
2068 } else {
2069 is_physical_device = false;
2070 phys_lun_ext_entry = NULL;
2071 log_lun_ext_entry =
2072 &logdev_list->lun_entries[i - num_physicals];
2073 scsi3addr = log_lun_ext_entry->lunid;
2074 }
2075
2076 if (is_physical_device && pqi_skip_device(scsi3addr))
2077 continue;
2078
2079 if (device)
2080 device = list_next_entry(device, new_device_list_entry);
2081 else
2082 device = list_first_entry(&new_device_list_head,
2083 struct pqi_scsi_dev, new_device_list_entry);
2084
2085 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
2086 device->is_physical_device = is_physical_device;
2087 if (is_physical_device) {
2088 if (phys_lun_ext_entry->device_type ==
2089 SA_EXPANDER_SMP_DEVICE)
2090 device->is_expander_smp_device = true;
2091 } else {
2092 device->is_external_raid_device =
2093 pqi_is_external_raid_addr(scsi3addr);
2094 }
2095
2096 /* Gather information about the device. */
2097 rc = pqi_get_device_info(ctrl_info, device);
2098 if (rc == -ENOMEM) {
2099 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2100 out_of_memory_msg);
2101 goto out;
2102 }
2103 if (rc) {
2104 if (device->is_physical_device)
2105 dev_warn(&ctrl_info->pci_dev->dev,
2106 "obtaining device info failed, skipping physical device %016llx\n",
2107 get_unaligned_be64(
2108 &phys_lun_ext_entry->wwid));
2109 else
2110 dev_warn(&ctrl_info->pci_dev->dev,
2111 "obtaining device info failed, skipping logical device %08x%08x\n",
2112 *((u32 *)&device->scsi3addr),
2113 *((u32 *)&device->scsi3addr[4]));
2114 rc = 0;
2115 continue;
2116 }
2117
2118 if (!pqi_is_supported_device(device))
2119 continue;
2120
2121 pqi_assign_bus_target_lun(device);
2122
2123 if (device->is_physical_device) {
2124 device->wwid = phys_lun_ext_entry->wwid;
2125 if ((phys_lun_ext_entry->device_flags &
2126 REPORT_PHYS_LUN_DEV_FLAG_AIO_ENABLED) &&
2127 phys_lun_ext_entry->aio_handle) {
2128 device->aio_enabled = true;
2129 device->aio_handle =
2130 phys_lun_ext_entry->aio_handle;
2131 }
2132 if (device->devtype == TYPE_DISK ||
2133 device->devtype == TYPE_ZBC) {
2134 pqi_get_physical_disk_info(ctrl_info,
2135 device, id_phys);
2136 }
2137 } else {
2138 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
2139 sizeof(device->volume_id));
2140 }
2141
2142 if (pqi_is_device_with_sas_address(device))
2143 device->sas_address = get_unaligned_be64(&device->wwid);
2144
2145 new_device_list[num_valid_devices++] = device;
2146 }
2147
2148 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
2149
2150 out:
2151 list_for_each_entry_safe(device, next, &new_device_list_head,
2152 new_device_list_entry) {
2153 if (device->keep_device)
2154 continue;
2155 list_del(&device->new_device_list_entry);
2156 pqi_free_device(device);
2157 }
2158
2159 kfree(new_device_list);
2160 kfree(physdev_list);
2161 kfree(logdev_list);
2162 kfree(id_phys);
2163
2164 return rc;
2165 }
2166
2167 static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2168 {
2169 unsigned long flags;
2170 struct pqi_scsi_dev *device;
2171
2172 while (1) {
2173 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
2174
2175 device = list_first_entry_or_null(&ctrl_info->scsi_device_list,
2176 struct pqi_scsi_dev, scsi_device_list_entry);
2177 if (device)
2178 list_del(&device->scsi_device_list_entry);
2179
2180 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
2181 flags);
2182
2183 if (!device)
2184 break;
2185
2186 if (pqi_is_device_added(device))
2187 pqi_remove_device(ctrl_info, device);
2188 pqi_free_device(device);
2189 }
2190 }
2191
2192 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2193 {
2194 int rc;
2195
2196 if (pqi_ctrl_offline(ctrl_info))
2197 return -ENXIO;
2198
2199 mutex_lock(&ctrl_info->scan_mutex);
2200
2201 rc = pqi_update_scsi_devices(ctrl_info);
2202 if (rc)
2203 pqi_schedule_rescan_worker_delayed(ctrl_info);
2204
2205 mutex_unlock(&ctrl_info->scan_mutex);
2206
2207 return rc;
2208 }
2209
2210 static void pqi_scan_start(struct Scsi_Host *shost)
2211 {
2212 struct pqi_ctrl_info *ctrl_info;
2213
2214 ctrl_info = shost_to_hba(shost);
2215 if (pqi_ctrl_in_ofa(ctrl_info))
2216 return;
2217
2218 pqi_scan_scsi_devices(ctrl_info);
2219 }
2220
2221 /* Returns TRUE if scan is finished. */
2222
2223 static int pqi_scan_finished(struct Scsi_Host *shost,
2224 unsigned long elapsed_time)
2225 {
2226 struct pqi_ctrl_info *ctrl_info;
2227
2228 ctrl_info = shost_priv(shost);
2229
2230 return !mutex_is_locked(&ctrl_info->scan_mutex);
2231 }
2232
2233 static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
2234 {
2235 mutex_lock(&ctrl_info->scan_mutex);
2236 mutex_unlock(&ctrl_info->scan_mutex);
2237 }
2238
2239 static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
2240 {
2241 mutex_lock(&ctrl_info->lun_reset_mutex);
2242 mutex_unlock(&ctrl_info->lun_reset_mutex);
2243 }
2244
2245 static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info)
2246 {
2247 mutex_lock(&ctrl_info->ofa_mutex);
2248 mutex_unlock(&ctrl_info->ofa_mutex);
2249 }
2250
2251 static inline void pqi_set_encryption_info(
2252 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map,
2253 u64 first_block)
2254 {
2255 u32 volume_blk_size;
2256
2257 /*
2258 * Set the encryption tweak values based on logical block address.
2259 * If the block size is 512, the tweak value is equal to the LBA.
2260 * For other block sizes, tweak value is (LBA * block size) / 512.
2261 */
2262 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2263 if (volume_blk_size != 512)
2264 first_block = (first_block * volume_blk_size) / 512;
2265
2266 encryption_info->data_encryption_key_index =
2267 get_unaligned_le16(&raid_map->data_encryption_key_index);
2268 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2269 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2270 }
2271
2272 /*
2273 * Attempt to perform RAID bypass mapping for a logical volume I/O.
2274 */
2275
2276 #define PQI_RAID_BYPASS_INELIGIBLE 1
2277
2278 static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2279 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2280 struct pqi_queue_group *queue_group)
2281 {
2282 struct raid_map *raid_map;
2283 bool is_write = false;
2284 u32 map_index;
2285 u64 first_block;
2286 u64 last_block;
2287 u32 block_cnt;
2288 u32 blocks_per_row;
2289 u64 first_row;
2290 u64 last_row;
2291 u32 first_row_offset;
2292 u32 last_row_offset;
2293 u32 first_column;
2294 u32 last_column;
2295 u64 r0_first_row;
2296 u64 r0_last_row;
2297 u32 r5or6_blocks_per_row;
2298 u64 r5or6_first_row;
2299 u64 r5or6_last_row;
2300 u32 r5or6_first_row_offset;
2301 u32 r5or6_last_row_offset;
2302 u32 r5or6_first_column;
2303 u32 r5or6_last_column;
2304 u16 data_disks_per_row;
2305 u32 total_disks_per_row;
2306 u16 layout_map_count;
2307 u32 stripesize;
2308 u16 strip_size;
2309 u32 first_group;
2310 u32 last_group;
2311 u32 current_group;
2312 u32 map_row;
2313 u32 aio_handle;
2314 u64 disk_block;
2315 u32 disk_block_cnt;
2316 u8 cdb[16];
2317 u8 cdb_length;
2318 int offload_to_mirror;
2319 struct pqi_encryption_info *encryption_info_ptr;
2320 struct pqi_encryption_info encryption_info;
2321 #if BITS_PER_LONG == 32
2322 u64 tmpdiv;
2323 #endif
2324
2325 /* Check for valid opcode, get LBA and block count. */
2326 switch (scmd->cmnd[0]) {
2327 case WRITE_6:
2328 is_write = true;
2329 /* fall through */
2330 case READ_6:
2331 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2332 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
2333 block_cnt = (u32)scmd->cmnd[4];
2334 if (block_cnt == 0)
2335 block_cnt = 256;
2336 break;
2337 case WRITE_10:
2338 is_write = true;
2339 /* fall through */
2340 case READ_10:
2341 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2342 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2343 break;
2344 case WRITE_12:
2345 is_write = true;
2346 /* fall through */
2347 case READ_12:
2348 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2349 block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2350 break;
2351 case WRITE_16:
2352 is_write = true;
2353 /* fall through */
2354 case READ_16:
2355 first_block = get_unaligned_be64(&scmd->cmnd[2]);
2356 block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2357 break;
2358 default:
2359 /* Process via normal I/O path. */
2360 return PQI_RAID_BYPASS_INELIGIBLE;
2361 }
2362
2363 /* Check for write to non-RAID-0. */
2364 if (is_write && device->raid_level != SA_RAID_0)
2365 return PQI_RAID_BYPASS_INELIGIBLE;
2366
2367 if (unlikely(block_cnt == 0))
2368 return PQI_RAID_BYPASS_INELIGIBLE;
2369
2370 last_block = first_block + block_cnt - 1;
2371 raid_map = device->raid_map;
2372
2373 /* Check for invalid block or wraparound. */
2374 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2375 last_block < first_block)
2376 return PQI_RAID_BYPASS_INELIGIBLE;
2377
2378 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row);
2379 strip_size = get_unaligned_le16(&raid_map->strip_size);
2380 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2381
2382 /* Calculate stripe information for the request. */
2383 blocks_per_row = data_disks_per_row * strip_size;
2384 #if BITS_PER_LONG == 32
2385 tmpdiv = first_block;
2386 do_div(tmpdiv, blocks_per_row);
2387 first_row = tmpdiv;
2388 tmpdiv = last_block;
2389 do_div(tmpdiv, blocks_per_row);
2390 last_row = tmpdiv;
2391 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2392 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2393 tmpdiv = first_row_offset;
2394 do_div(tmpdiv, strip_size);
2395 first_column = tmpdiv;
2396 tmpdiv = last_row_offset;
2397 do_div(tmpdiv, strip_size);
2398 last_column = tmpdiv;
2399 #else
2400 first_row = first_block / blocks_per_row;
2401 last_row = last_block / blocks_per_row;
2402 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2403 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2404 first_column = first_row_offset / strip_size;
2405 last_column = last_row_offset / strip_size;
2406 #endif
2407
2408 /* If this isn't a single row/column then give to the controller. */
2409 if (first_row != last_row || first_column != last_column)
2410 return PQI_RAID_BYPASS_INELIGIBLE;
2411
2412 /* Proceeding with driver mapping. */
2413 total_disks_per_row = data_disks_per_row +
2414 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2415 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2416 get_unaligned_le16(&raid_map->row_cnt);
2417 map_index = (map_row * total_disks_per_row) + first_column;
2418
2419 /* RAID 1 */
2420 if (device->raid_level == SA_RAID_1) {
2421 if (device->offload_to_mirror)
2422 map_index += data_disks_per_row;
2423 device->offload_to_mirror = !device->offload_to_mirror;
2424 } else if (device->raid_level == SA_RAID_ADM) {
2425 /* RAID ADM */
2426 /*
2427 * Handles N-way mirrors (R1-ADM) and R10 with # of drives
2428 * divisible by 3.
2429 */
2430 offload_to_mirror = device->offload_to_mirror;
2431 if (offload_to_mirror == 0) {
2432 /* use physical disk in the first mirrored group. */
2433 map_index %= data_disks_per_row;
2434 } else {
2435 do {
2436 /*
2437 * Determine mirror group that map_index
2438 * indicates.
2439 */
2440 current_group = map_index / data_disks_per_row;
2441
2442 if (offload_to_mirror != current_group) {
2443 if (current_group <
2444 layout_map_count - 1) {
2445 /*
2446 * Select raid index from
2447 * next group.
2448 */
2449 map_index += data_disks_per_row;
2450 current_group++;
2451 } else {
2452 /*
2453 * Select raid index from first
2454 * group.
2455 */
2456 map_index %= data_disks_per_row;
2457 current_group = 0;
2458 }
2459 }
2460 } while (offload_to_mirror != current_group);
2461 }
2462
2463 /* Set mirror group to use next time. */
2464 offload_to_mirror =
2465 (offload_to_mirror >= layout_map_count - 1) ?
2466 0 : offload_to_mirror + 1;
2467 WARN_ON(offload_to_mirror >= layout_map_count);
2468 device->offload_to_mirror = offload_to_mirror;
2469 /*
2470 * Avoid direct use of device->offload_to_mirror within this
2471 * function since multiple threads might simultaneously
2472 * increment it beyond the range of device->layout_map_count -1.
2473 */
2474 } else if ((device->raid_level == SA_RAID_5 ||
2475 device->raid_level == SA_RAID_6) && layout_map_count > 1) {
2476 /* RAID 50/60 */
2477 /* Verify first and last block are in same RAID group */
2478 r5or6_blocks_per_row = strip_size * data_disks_per_row;
2479 stripesize = r5or6_blocks_per_row * layout_map_count;
2480 #if BITS_PER_LONG == 32
2481 tmpdiv = first_block;
2482 first_group = do_div(tmpdiv, stripesize);
2483 tmpdiv = first_group;
2484 do_div(tmpdiv, r5or6_blocks_per_row);
2485 first_group = tmpdiv;
2486 tmpdiv = last_block;
2487 last_group = do_div(tmpdiv, stripesize);
2488 tmpdiv = last_group;
2489 do_div(tmpdiv, r5or6_blocks_per_row);
2490 last_group = tmpdiv;
2491 #else
2492 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
2493 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
2494 #endif
2495 if (first_group != last_group)
2496 return PQI_RAID_BYPASS_INELIGIBLE;
2497
2498 /* Verify request is in a single row of RAID 5/6 */
2499 #if BITS_PER_LONG == 32
2500 tmpdiv = first_block;
2501 do_div(tmpdiv, stripesize);
2502 first_row = r5or6_first_row = r0_first_row = tmpdiv;
2503 tmpdiv = last_block;
2504 do_div(tmpdiv, stripesize);
2505 r5or6_last_row = r0_last_row = tmpdiv;
2506 #else
2507 first_row = r5or6_first_row = r0_first_row =
2508 first_block / stripesize;
2509 r5or6_last_row = r0_last_row = last_block / stripesize;
2510 #endif
2511 if (r5or6_first_row != r5or6_last_row)
2512 return PQI_RAID_BYPASS_INELIGIBLE;
2513
2514 /* Verify request is in a single column */
2515 #if BITS_PER_LONG == 32
2516 tmpdiv = first_block;
2517 first_row_offset = do_div(tmpdiv, stripesize);
2518 tmpdiv = first_row_offset;
2519 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row);
2520 r5or6_first_row_offset = first_row_offset;
2521 tmpdiv = last_block;
2522 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
2523 tmpdiv = r5or6_last_row_offset;
2524 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
2525 tmpdiv = r5or6_first_row_offset;
2526 do_div(tmpdiv, strip_size);
2527 first_column = r5or6_first_column = tmpdiv;
2528 tmpdiv = r5or6_last_row_offset;
2529 do_div(tmpdiv, strip_size);
2530 r5or6_last_column = tmpdiv;
2531 #else
2532 first_row_offset = r5or6_first_row_offset =
2533 (u32)((first_block % stripesize) %
2534 r5or6_blocks_per_row);
2535
2536 r5or6_last_row_offset =
2537 (u32)((last_block % stripesize) %
2538 r5or6_blocks_per_row);
2539
2540 first_column = r5or6_first_row_offset / strip_size;
2541 r5or6_first_column = first_column;
2542 r5or6_last_column = r5or6_last_row_offset / strip_size;
2543 #endif
2544 if (r5or6_first_column != r5or6_last_column)
2545 return PQI_RAID_BYPASS_INELIGIBLE;
2546
2547 /* Request is eligible */
2548 map_row =
2549 ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2550 get_unaligned_le16(&raid_map->row_cnt);
2551
2552 map_index = (first_group *
2553 (get_unaligned_le16(&raid_map->row_cnt) *
2554 total_disks_per_row)) +
2555 (map_row * total_disks_per_row) + first_column;
2556 }
2557
2558 aio_handle = raid_map->disk_data[map_index].aio_handle;
2559 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2560 first_row * strip_size +
2561 (first_row_offset - first_column * strip_size);
2562 disk_block_cnt = block_cnt;
2563
2564 /* Handle differing logical/physical block sizes. */
2565 if (raid_map->phys_blk_shift) {
2566 disk_block <<= raid_map->phys_blk_shift;
2567 disk_block_cnt <<= raid_map->phys_blk_shift;
2568 }
2569
2570 if (unlikely(disk_block_cnt > 0xffff))
2571 return PQI_RAID_BYPASS_INELIGIBLE;
2572
2573 /* Build the new CDB for the physical disk I/O. */
2574 if (disk_block > 0xffffffff) {
2575 cdb[0] = is_write ? WRITE_16 : READ_16;
2576 cdb[1] = 0;
2577 put_unaligned_be64(disk_block, &cdb[2]);
2578 put_unaligned_be32(disk_block_cnt, &cdb[10]);
2579 cdb[14] = 0;
2580 cdb[15] = 0;
2581 cdb_length = 16;
2582 } else {
2583 cdb[0] = is_write ? WRITE_10 : READ_10;
2584 cdb[1] = 0;
2585 put_unaligned_be32((u32)disk_block, &cdb[2]);
2586 cdb[6] = 0;
2587 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]);
2588 cdb[9] = 0;
2589 cdb_length = 10;
2590 }
2591
2592 if (get_unaligned_le16(&raid_map->flags) &
2593 RAID_MAP_ENCRYPTION_ENABLED) {
2594 pqi_set_encryption_info(&encryption_info, raid_map,
2595 first_block);
2596 encryption_info_ptr = &encryption_info;
2597 } else {
2598 encryption_info_ptr = NULL;
2599 }
2600
2601 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
2602 cdb, cdb_length, queue_group, encryption_info_ptr, true);
2603 }
2604
2605 #define PQI_STATUS_IDLE 0x0
2606
2607 #define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2608 #define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2609
2610 #define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2611 #define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2612 #define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2613 #define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2614 #define PQI_DEVICE_STATE_ERROR 0x4
2615
2616 #define PQI_MODE_READY_TIMEOUT_SECS 30
2617 #define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2618
2619 static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2620 {
2621 struct pqi_device_registers __iomem *pqi_registers;
2622 unsigned long timeout;
2623 u64 signature;
2624 u8 status;
2625
2626 pqi_registers = ctrl_info->pqi_registers;
2627 timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies;
2628
2629 while (1) {
2630 signature = readq(&pqi_registers->signature);
2631 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2632 sizeof(signature)) == 0)
2633 break;
2634 if (time_after(jiffies, timeout)) {
2635 dev_err(&ctrl_info->pci_dev->dev,
2636 "timed out waiting for PQI signature\n");
2637 return -ETIMEDOUT;
2638 }
2639 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2640 }
2641
2642 while (1) {
2643 status = readb(&pqi_registers->function_and_status_code);
2644 if (status == PQI_STATUS_IDLE)
2645 break;
2646 if (time_after(jiffies, timeout)) {
2647 dev_err(&ctrl_info->pci_dev->dev,
2648 "timed out waiting for PQI IDLE\n");
2649 return -ETIMEDOUT;
2650 }
2651 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2652 }
2653
2654 while (1) {
2655 if (readl(&pqi_registers->device_status) ==
2656 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2657 break;
2658 if (time_after(jiffies, timeout)) {
2659 dev_err(&ctrl_info->pci_dev->dev,
2660 "timed out waiting for PQI all registers ready\n");
2661 return -ETIMEDOUT;
2662 }
2663 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2664 }
2665
2666 return 0;
2667 }
2668
2669 static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2670 {
2671 struct pqi_scsi_dev *device;
2672
2673 device = io_request->scmd->device->hostdata;
2674 device->raid_bypass_enabled = false;
2675 device->aio_enabled = false;
2676 }
2677
2678 static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
2679 {
2680 struct pqi_ctrl_info *ctrl_info;
2681 struct pqi_scsi_dev *device;
2682
2683 device = sdev->hostdata;
2684 if (device->device_offline)
2685 return;
2686
2687 device->device_offline = true;
2688 ctrl_info = shost_to_hba(sdev->host);
2689 pqi_schedule_rescan_worker(ctrl_info);
2690 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n",
2691 path, ctrl_info->scsi_host->host_no, device->bus,
2692 device->target, device->lun);
2693 }
2694
2695 static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2696 {
2697 u8 scsi_status;
2698 u8 host_byte;
2699 struct scsi_cmnd *scmd;
2700 struct pqi_raid_error_info *error_info;
2701 size_t sense_data_length;
2702 int residual_count;
2703 int xfer_count;
2704 struct scsi_sense_hdr sshdr;
2705
2706 scmd = io_request->scmd;
2707 if (!scmd)
2708 return;
2709
2710 error_info = io_request->error_info;
2711 scsi_status = error_info->status;
2712 host_byte = DID_OK;
2713
2714 switch (error_info->data_out_result) {
2715 case PQI_DATA_IN_OUT_GOOD:
2716 break;
2717 case PQI_DATA_IN_OUT_UNDERFLOW:
2718 xfer_count =
2719 get_unaligned_le32(&error_info->data_out_transferred);
2720 residual_count = scsi_bufflen(scmd) - xfer_count;
2721 scsi_set_resid(scmd, residual_count);
2722 if (xfer_count < scmd->underflow)
2723 host_byte = DID_SOFT_ERROR;
2724 break;
2725 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
2726 case PQI_DATA_IN_OUT_ABORTED:
2727 host_byte = DID_ABORT;
2728 break;
2729 case PQI_DATA_IN_OUT_TIMEOUT:
2730 host_byte = DID_TIME_OUT;
2731 break;
2732 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
2733 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
2734 case PQI_DATA_IN_OUT_BUFFER_ERROR:
2735 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
2736 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
2737 case PQI_DATA_IN_OUT_ERROR:
2738 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
2739 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
2740 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
2741 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
2742 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
2743 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
2744 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
2745 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
2746 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
2747 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
2748 default:
2749 host_byte = DID_ERROR;
2750 break;
2751 }
2752
2753 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2754 if (sense_data_length == 0)
2755 sense_data_length =
2756 get_unaligned_le16(&error_info->response_data_length);
2757 if (sense_data_length) {
2758 if (sense_data_length > sizeof(error_info->data))
2759 sense_data_length = sizeof(error_info->data);
2760
2761 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2762 scsi_normalize_sense(error_info->data,
2763 sense_data_length, &sshdr) &&
2764 sshdr.sense_key == HARDWARE_ERROR &&
2765 sshdr.asc == 0x3e &&
2766 sshdr.ascq == 0x1) {
2767 pqi_take_device_offline(scmd->device, "RAID");
2768 host_byte = DID_NO_CONNECT;
2769 }
2770
2771 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2772 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2773 memcpy(scmd->sense_buffer, error_info->data,
2774 sense_data_length);
2775 }
2776
2777 scmd->result = scsi_status;
2778 set_host_byte(scmd, host_byte);
2779 }
2780
2781 static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2782 {
2783 u8 scsi_status;
2784 u8 host_byte;
2785 struct scsi_cmnd *scmd;
2786 struct pqi_aio_error_info *error_info;
2787 size_t sense_data_length;
2788 int residual_count;
2789 int xfer_count;
2790 bool device_offline;
2791
2792 scmd = io_request->scmd;
2793 error_info = io_request->error_info;
2794 host_byte = DID_OK;
2795 sense_data_length = 0;
2796 device_offline = false;
2797
2798 switch (error_info->service_response) {
2799 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2800 scsi_status = error_info->status;
2801 break;
2802 case PQI_AIO_SERV_RESPONSE_FAILURE:
2803 switch (error_info->status) {
2804 case PQI_AIO_STATUS_IO_ABORTED:
2805 scsi_status = SAM_STAT_TASK_ABORTED;
2806 break;
2807 case PQI_AIO_STATUS_UNDERRUN:
2808 scsi_status = SAM_STAT_GOOD;
2809 residual_count = get_unaligned_le32(
2810 &error_info->residual_count);
2811 scsi_set_resid(scmd, residual_count);
2812 xfer_count = scsi_bufflen(scmd) - residual_count;
2813 if (xfer_count < scmd->underflow)
2814 host_byte = DID_SOFT_ERROR;
2815 break;
2816 case PQI_AIO_STATUS_OVERRUN:
2817 scsi_status = SAM_STAT_GOOD;
2818 break;
2819 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2820 pqi_aio_path_disabled(io_request);
2821 scsi_status = SAM_STAT_GOOD;
2822 io_request->status = -EAGAIN;
2823 break;
2824 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
2825 case PQI_AIO_STATUS_INVALID_DEVICE:
2826 if (!io_request->raid_bypass) {
2827 device_offline = true;
2828 pqi_take_device_offline(scmd->device, "AIO");
2829 host_byte = DID_NO_CONNECT;
2830 }
2831 scsi_status = SAM_STAT_CHECK_CONDITION;
2832 break;
2833 case PQI_AIO_STATUS_IO_ERROR:
2834 default:
2835 scsi_status = SAM_STAT_CHECK_CONDITION;
2836 break;
2837 }
2838 break;
2839 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
2840 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
2841 scsi_status = SAM_STAT_GOOD;
2842 break;
2843 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
2844 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
2845 default:
2846 scsi_status = SAM_STAT_CHECK_CONDITION;
2847 break;
2848 }
2849
2850 if (error_info->data_present) {
2851 sense_data_length =
2852 get_unaligned_le16(&error_info->data_length);
2853 if (sense_data_length) {
2854 if (sense_data_length > sizeof(error_info->data))
2855 sense_data_length = sizeof(error_info->data);
2856 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2857 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2858 memcpy(scmd->sense_buffer, error_info->data,
2859 sense_data_length);
2860 }
2861 }
2862
2863 if (device_offline && sense_data_length == 0)
2864 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
2865 0x3e, 0x1);
2866
2867 scmd->result = scsi_status;
2868 set_host_byte(scmd, host_byte);
2869 }
2870
2871 static void pqi_process_io_error(unsigned int iu_type,
2872 struct pqi_io_request *io_request)
2873 {
2874 switch (iu_type) {
2875 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2876 pqi_process_raid_io_error(io_request);
2877 break;
2878 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2879 pqi_process_aio_io_error(io_request);
2880 break;
2881 }
2882 }
2883
2884 static int pqi_interpret_task_management_response(
2885 struct pqi_task_management_response *response)
2886 {
2887 int rc;
2888
2889 switch (response->response_code) {
2890 case SOP_TMF_COMPLETE:
2891 case SOP_TMF_FUNCTION_SUCCEEDED:
2892 rc = 0;
2893 break;
2894 case SOP_TMF_REJECTED:
2895 rc = -EAGAIN;
2896 break;
2897 default:
2898 rc = -EIO;
2899 break;
2900 }
2901
2902 return rc;
2903 }
2904
2905 static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info,
2906 struct pqi_queue_group *queue_group)
2907 {
2908 unsigned int num_responses;
2909 pqi_index_t oq_pi;
2910 pqi_index_t oq_ci;
2911 struct pqi_io_request *io_request;
2912 struct pqi_io_response *response;
2913 u16 request_id;
2914
2915 num_responses = 0;
2916 oq_ci = queue_group->oq_ci_copy;
2917
2918 while (1) {
2919 oq_pi = readl(queue_group->oq_pi);
2920 if (oq_pi == oq_ci)
2921 break;
2922
2923 num_responses++;
2924 response = queue_group->oq_element_array +
2925 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
2926
2927 request_id = get_unaligned_le16(&response->request_id);
2928 WARN_ON(request_id >= ctrl_info->max_io_slots);
2929
2930 io_request = &ctrl_info->io_request_pool[request_id];
2931 WARN_ON(atomic_read(&io_request->refcount) == 0);
2932
2933 switch (response->header.iu_type) {
2934 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
2935 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2936 if (io_request->scmd)
2937 io_request->scmd->result = 0;
2938 /* fall through */
2939 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
2940 break;
2941 case PQI_RESPONSE_IU_VENDOR_GENERAL:
2942 io_request->status =
2943 get_unaligned_le16(
2944 &((struct pqi_vendor_general_response *)
2945 response)->status);
2946 break;
2947 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
2948 io_request->status =
2949 pqi_interpret_task_management_response(
2950 (void *)response);
2951 break;
2952 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
2953 pqi_aio_path_disabled(io_request);
2954 io_request->status = -EAGAIN;
2955 break;
2956 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2957 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2958 io_request->error_info = ctrl_info->error_buffer +
2959 (get_unaligned_le16(&response->error_index) *
2960 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
2961 pqi_process_io_error(response->header.iu_type,
2962 io_request);
2963 break;
2964 default:
2965 dev_err(&ctrl_info->pci_dev->dev,
2966 "unexpected IU type: 0x%x\n",
2967 response->header.iu_type);
2968 break;
2969 }
2970
2971 io_request->io_complete_callback(io_request,
2972 io_request->context);
2973
2974 /*
2975 * Note that the I/O request structure CANNOT BE TOUCHED after
2976 * returning from the I/O completion callback!
2977 */
2978
2979 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
2980 }
2981
2982 if (num_responses) {
2983 queue_group->oq_ci_copy = oq_ci;
2984 writel(oq_ci, queue_group->oq_ci);
2985 }
2986
2987 return num_responses;
2988 }
2989
2990 static inline unsigned int pqi_num_elements_free(unsigned int pi,
2991 unsigned int ci, unsigned int elements_in_queue)
2992 {
2993 unsigned int num_elements_used;
2994
2995 if (pi >= ci)
2996 num_elements_used = pi - ci;
2997 else
2998 num_elements_used = elements_in_queue - ci + pi;
2999
3000 return elements_in_queue - num_elements_used - 1;
3001 }
3002
3003 static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
3004 struct pqi_event_acknowledge_request *iu, size_t iu_length)
3005 {
3006 pqi_index_t iq_pi;
3007 pqi_index_t iq_ci;
3008 unsigned long flags;
3009 void *next_element;
3010 struct pqi_queue_group *queue_group;
3011
3012 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
3013 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
3014
3015 while (1) {
3016 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
3017
3018 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
3019 iq_ci = readl(queue_group->iq_ci[RAID_PATH]);
3020
3021 if (pqi_num_elements_free(iq_pi, iq_ci,
3022 ctrl_info->num_elements_per_iq))
3023 break;
3024
3025 spin_unlock_irqrestore(
3026 &queue_group->submit_lock[RAID_PATH], flags);
3027
3028 if (pqi_ctrl_offline(ctrl_info))
3029 return;
3030 }
3031
3032 next_element = queue_group->iq_element_array[RAID_PATH] +
3033 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3034
3035 memcpy(next_element, iu, iu_length);
3036
3037 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
3038 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
3039
3040 /*
3041 * This write notifies the controller that an IU is available to be
3042 * processed.
3043 */
3044 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
3045
3046 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
3047 }
3048
3049 static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
3050 struct pqi_event *event)
3051 {
3052 struct pqi_event_acknowledge_request request;
3053
3054 memset(&request, 0, sizeof(request));
3055
3056 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
3057 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
3058 &request.header.iu_length);
3059 request.event_type = event->event_type;
3060 request.event_id = event->event_id;
3061 request.additional_event_id = event->additional_event_id;
3062
3063 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
3064 }
3065
3066 #define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30
3067 #define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1
3068
3069 static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status(
3070 struct pqi_ctrl_info *ctrl_info)
3071 {
3072 unsigned long timeout;
3073 u8 status;
3074
3075 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies;
3076
3077 while (1) {
3078 status = pqi_read_soft_reset_status(ctrl_info);
3079 if (status & PQI_SOFT_RESET_INITIATE)
3080 return RESET_INITIATE_DRIVER;
3081
3082 if (status & PQI_SOFT_RESET_ABORT)
3083 return RESET_ABORT;
3084
3085 if (time_after(jiffies, timeout)) {
3086 dev_err(&ctrl_info->pci_dev->dev,
3087 "timed out waiting for soft reset status\n");
3088 return RESET_TIMEDOUT;
3089 }
3090
3091 if (!sis_is_firmware_running(ctrl_info))
3092 return RESET_NORESPONSE;
3093
3094 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS);
3095 }
3096 }
3097
3098 static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info,
3099 enum pqi_soft_reset_status reset_status)
3100 {
3101 int rc;
3102
3103 switch (reset_status) {
3104 case RESET_INITIATE_DRIVER:
3105 /* fall through */
3106 case RESET_TIMEDOUT:
3107 dev_info(&ctrl_info->pci_dev->dev,
3108 "resetting controller %u\n", ctrl_info->ctrl_id);
3109 sis_soft_reset(ctrl_info);
3110 /* fall through */
3111 case RESET_INITIATE_FIRMWARE:
3112 rc = pqi_ofa_ctrl_restart(ctrl_info);
3113 pqi_ofa_free_host_buffer(ctrl_info);
3114 dev_info(&ctrl_info->pci_dev->dev,
3115 "Online Firmware Activation for controller %u: %s\n",
3116 ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED");
3117 break;
3118 case RESET_ABORT:
3119 pqi_ofa_ctrl_unquiesce(ctrl_info);
3120 dev_info(&ctrl_info->pci_dev->dev,
3121 "Online Firmware Activation for controller %u: %s\n",
3122 ctrl_info->ctrl_id, "ABORTED");
3123 break;
3124 case RESET_NORESPONSE:
3125 pqi_ofa_free_host_buffer(ctrl_info);
3126 pqi_take_ctrl_offline(ctrl_info);
3127 break;
3128 }
3129 }
3130
3131 static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info,
3132 struct pqi_event *event)
3133 {
3134 u16 event_id;
3135 enum pqi_soft_reset_status status;
3136
3137 event_id = get_unaligned_le16(&event->event_id);
3138
3139 mutex_lock(&ctrl_info->ofa_mutex);
3140
3141 if (event_id == PQI_EVENT_OFA_QUIESCE) {
3142 dev_info(&ctrl_info->pci_dev->dev,
3143 "Received Online Firmware Activation quiesce event for controller %u\n",
3144 ctrl_info->ctrl_id);
3145 pqi_ofa_ctrl_quiesce(ctrl_info);
3146 pqi_acknowledge_event(ctrl_info, event);
3147 if (ctrl_info->soft_reset_handshake_supported) {
3148 status = pqi_poll_for_soft_reset_status(ctrl_info);
3149 pqi_process_soft_reset(ctrl_info, status);
3150 } else {
3151 pqi_process_soft_reset(ctrl_info,
3152 RESET_INITIATE_FIRMWARE);
3153 }
3154
3155 } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3156 pqi_acknowledge_event(ctrl_info, event);
3157 pqi_ofa_setup_host_buffer(ctrl_info,
3158 le32_to_cpu(event->ofa_bytes_requested));
3159 pqi_ofa_host_memory_update(ctrl_info);
3160 } else if (event_id == PQI_EVENT_OFA_CANCELLED) {
3161 pqi_ofa_free_host_buffer(ctrl_info);
3162 pqi_acknowledge_event(ctrl_info, event);
3163 dev_info(&ctrl_info->pci_dev->dev,
3164 "Online Firmware Activation(%u) cancel reason : %u\n",
3165 ctrl_info->ctrl_id, event->ofa_cancel_reason);
3166 }
3167
3168 mutex_unlock(&ctrl_info->ofa_mutex);
3169 }
3170
3171 static void pqi_event_worker(struct work_struct *work)
3172 {
3173 unsigned int i;
3174 struct pqi_ctrl_info *ctrl_info;
3175 struct pqi_event *event;
3176
3177 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
3178
3179 pqi_ctrl_busy(ctrl_info);
3180 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
3181 if (pqi_ctrl_offline(ctrl_info))
3182 goto out;
3183
3184 pqi_schedule_rescan_worker_delayed(ctrl_info);
3185
3186 event = ctrl_info->events;
3187 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
3188 if (event->pending) {
3189 event->pending = false;
3190 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3191 pqi_ctrl_unbusy(ctrl_info);
3192 pqi_ofa_process_event(ctrl_info, event);
3193 return;
3194 }
3195 pqi_acknowledge_event(ctrl_info, event);
3196 }
3197 event++;
3198 }
3199
3200 out:
3201 pqi_ctrl_unbusy(ctrl_info);
3202 }
3203
3204 #define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ)
3205
3206 static void pqi_heartbeat_timer_handler(struct timer_list *t)
3207 {
3208 int num_interrupts;
3209 u32 heartbeat_count;
3210 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t,
3211 heartbeat_timer);
3212
3213 pqi_check_ctrl_health(ctrl_info);
3214 if (pqi_ctrl_offline(ctrl_info))
3215 return;
3216
3217 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
3218 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
3219
3220 if (num_interrupts == ctrl_info->previous_num_interrupts) {
3221 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
3222 dev_err(&ctrl_info->pci_dev->dev,
3223 "no heartbeat detected - last heartbeat count: %u\n",
3224 heartbeat_count);
3225 pqi_take_ctrl_offline(ctrl_info);
3226 return;
3227 }
3228 } else {
3229 ctrl_info->previous_num_interrupts = num_interrupts;
3230 }
3231
3232 ctrl_info->previous_heartbeat_count = heartbeat_count;
3233 mod_timer(&ctrl_info->heartbeat_timer,
3234 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
3235 }
3236
3237 static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3238 {
3239 if (!ctrl_info->heartbeat_counter)
3240 return;
3241
3242 ctrl_info->previous_num_interrupts =
3243 atomic_read(&ctrl_info->num_interrupts);
3244 ctrl_info->previous_heartbeat_count =
3245 pqi_read_heartbeat_counter(ctrl_info);
3246
3247 ctrl_info->heartbeat_timer.expires =
3248 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
3249 add_timer(&ctrl_info->heartbeat_timer);
3250 }
3251
3252 static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3253 {
3254 del_timer_sync(&ctrl_info->heartbeat_timer);
3255 }
3256
3257 static inline int pqi_event_type_to_event_index(unsigned int event_type)
3258 {
3259 int index;
3260
3261 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
3262 if (event_type == pqi_supported_event_types[index])
3263 return index;
3264
3265 return -1;
3266 }
3267
3268 static inline bool pqi_is_supported_event(unsigned int event_type)
3269 {
3270 return pqi_event_type_to_event_index(event_type) != -1;
3271 }
3272
3273 static void pqi_ofa_capture_event_payload(struct pqi_event *event,
3274 struct pqi_event_response *response)
3275 {
3276 u16 event_id;
3277
3278 event_id = get_unaligned_le16(&event->event_id);
3279
3280 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3281 if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3282 event->ofa_bytes_requested =
3283 response->data.ofa_memory_allocation.bytes_requested;
3284 } else if (event_id == PQI_EVENT_OFA_CANCELLED) {
3285 event->ofa_cancel_reason =
3286 response->data.ofa_cancelled.reason;
3287 }
3288 }
3289 }
3290
3291 static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
3292 {
3293 unsigned int num_events;
3294 pqi_index_t oq_pi;
3295 pqi_index_t oq_ci;
3296 struct pqi_event_queue *event_queue;
3297 struct pqi_event_response *response;
3298 struct pqi_event *event;
3299 int event_index;
3300
3301 event_queue = &ctrl_info->event_queue;
3302 num_events = 0;
3303 oq_ci = event_queue->oq_ci_copy;
3304
3305 while (1) {
3306 oq_pi = readl(event_queue->oq_pi);
3307 if (oq_pi == oq_ci)
3308 break;
3309
3310 num_events++;
3311 response = event_queue->oq_element_array +
3312 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
3313
3314 event_index =
3315 pqi_event_type_to_event_index(response->event_type);
3316
3317 if (event_index >= 0) {
3318 if (response->request_acknowlege) {
3319 event = &ctrl_info->events[event_index];
3320 event->pending = true;
3321 event->event_type = response->event_type;
3322 event->event_id = response->event_id;
3323 event->additional_event_id =
3324 response->additional_event_id;
3325 pqi_ofa_capture_event_payload(event, response);
3326 }
3327 }
3328
3329 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
3330 }
3331
3332 if (num_events) {
3333 event_queue->oq_ci_copy = oq_ci;
3334 writel(oq_ci, event_queue->oq_ci);
3335 schedule_work(&ctrl_info->event_work);
3336 }
3337
3338 return num_events;
3339 }
3340
3341 #define PQI_LEGACY_INTX_MASK 0x1
3342
3343 static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info,
3344 bool enable_intx)
3345 {
3346 u32 intx_mask;
3347 struct pqi_device_registers __iomem *pqi_registers;
3348 volatile void __iomem *register_addr;
3349
3350 pqi_registers = ctrl_info->pqi_registers;
3351
3352 if (enable_intx)
3353 register_addr = &pqi_registers->legacy_intx_mask_clear;
3354 else
3355 register_addr = &pqi_registers->legacy_intx_mask_set;
3356
3357 intx_mask = readl(register_addr);
3358 intx_mask |= PQI_LEGACY_INTX_MASK;
3359 writel(intx_mask, register_addr);
3360 }
3361
3362 static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3363 enum pqi_irq_mode new_mode)
3364 {
3365 switch (ctrl_info->irq_mode) {
3366 case IRQ_MODE_MSIX:
3367 switch (new_mode) {
3368 case IRQ_MODE_MSIX:
3369 break;
3370 case IRQ_MODE_INTX:
3371 pqi_configure_legacy_intx(ctrl_info, true);
3372 sis_enable_intx(ctrl_info);
3373 break;
3374 case IRQ_MODE_NONE:
3375 break;
3376 }
3377 break;
3378 case IRQ_MODE_INTX:
3379 switch (new_mode) {
3380 case IRQ_MODE_MSIX:
3381 pqi_configure_legacy_intx(ctrl_info, false);
3382 sis_enable_msix(ctrl_info);
3383 break;
3384 case IRQ_MODE_INTX:
3385 break;
3386 case IRQ_MODE_NONE:
3387 pqi_configure_legacy_intx(ctrl_info, false);
3388 break;
3389 }
3390 break;
3391 case IRQ_MODE_NONE:
3392 switch (new_mode) {
3393 case IRQ_MODE_MSIX:
3394 sis_enable_msix(ctrl_info);
3395 break;
3396 case IRQ_MODE_INTX:
3397 pqi_configure_legacy_intx(ctrl_info, true);
3398 sis_enable_intx(ctrl_info);
3399 break;
3400 case IRQ_MODE_NONE:
3401 break;
3402 }
3403 break;
3404 }
3405
3406 ctrl_info->irq_mode = new_mode;
3407 }
3408
3409 #define PQI_LEGACY_INTX_PENDING 0x1
3410
3411 static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3412 {
3413 bool valid_irq;
3414 u32 intx_status;
3415
3416 switch (ctrl_info->irq_mode) {
3417 case IRQ_MODE_MSIX:
3418 valid_irq = true;
3419 break;
3420 case IRQ_MODE_INTX:
3421 intx_status =
3422 readl(&ctrl_info->pqi_registers->legacy_intx_status);
3423 if (intx_status & PQI_LEGACY_INTX_PENDING)
3424 valid_irq = true;
3425 else
3426 valid_irq = false;
3427 break;
3428 case IRQ_MODE_NONE:
3429 default:
3430 valid_irq = false;
3431 break;
3432 }
3433
3434 return valid_irq;
3435 }
3436
3437 static irqreturn_t pqi_irq_handler(int irq, void *data)
3438 {
3439 struct pqi_ctrl_info *ctrl_info;
3440 struct pqi_queue_group *queue_group;
3441 unsigned int num_responses_handled;
3442
3443 queue_group = data;
3444 ctrl_info = queue_group->ctrl_info;
3445
3446 if (!pqi_is_valid_irq(ctrl_info))
3447 return IRQ_NONE;
3448
3449 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3450
3451 if (irq == ctrl_info->event_irq)
3452 num_responses_handled += pqi_process_event_intr(ctrl_info);
3453
3454 if (num_responses_handled)
3455 atomic_inc(&ctrl_info->num_interrupts);
3456
3457 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3458 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3459
3460 return IRQ_HANDLED;
3461 }
3462
3463 static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3464 {
3465 struct pci_dev *pci_dev = ctrl_info->pci_dev;
3466 int i;
3467 int rc;
3468
3469 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
3470
3471 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
3472 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
3473 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
3474 if (rc) {
3475 dev_err(&pci_dev->dev,
3476 "irq %u init failed with error %d\n",
3477 pci_irq_vector(pci_dev, i), rc);
3478 return rc;
3479 }
3480 ctrl_info->num_msix_vectors_initialized++;
3481 }
3482
3483 return 0;
3484 }
3485
3486 static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3487 {
3488 int i;
3489
3490 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3491 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3492 &ctrl_info->queue_groups[i]);
3493
3494 ctrl_info->num_msix_vectors_initialized = 0;
3495 }
3496
3497 static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3498 {
3499 int num_vectors_enabled;
3500
3501 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
3502 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3503 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
3504 if (num_vectors_enabled < 0) {
3505 dev_err(&ctrl_info->pci_dev->dev,
3506 "MSI-X init failed with error %d\n",
3507 num_vectors_enabled);
3508 return num_vectors_enabled;
3509 }
3510
3511 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
3512 ctrl_info->irq_mode = IRQ_MODE_MSIX;
3513 return 0;
3514 }
3515
3516 static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3517 {
3518 if (ctrl_info->num_msix_vectors_enabled) {
3519 pci_free_irq_vectors(ctrl_info->pci_dev);
3520 ctrl_info->num_msix_vectors_enabled = 0;
3521 }
3522 }
3523
3524 static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3525 {
3526 unsigned int i;
3527 size_t alloc_length;
3528 size_t element_array_length_per_iq;
3529 size_t element_array_length_per_oq;
3530 void *element_array;
3531 void __iomem *next_queue_index;
3532 void *aligned_pointer;
3533 unsigned int num_inbound_queues;
3534 unsigned int num_outbound_queues;
3535 unsigned int num_queue_indexes;
3536 struct pqi_queue_group *queue_group;
3537
3538 element_array_length_per_iq =
3539 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3540 ctrl_info->num_elements_per_iq;
3541 element_array_length_per_oq =
3542 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3543 ctrl_info->num_elements_per_oq;
3544 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3545 num_outbound_queues = ctrl_info->num_queue_groups;
3546 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3547
3548 aligned_pointer = NULL;
3549
3550 for (i = 0; i < num_inbound_queues; i++) {
3551 aligned_pointer = PTR_ALIGN(aligned_pointer,
3552 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3553 aligned_pointer += element_array_length_per_iq;
3554 }
3555
3556 for (i = 0; i < num_outbound_queues; i++) {
3557 aligned_pointer = PTR_ALIGN(aligned_pointer,
3558 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3559 aligned_pointer += element_array_length_per_oq;
3560 }
3561
3562 aligned_pointer = PTR_ALIGN(aligned_pointer,
3563 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3564 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3565 PQI_EVENT_OQ_ELEMENT_LENGTH;
3566
3567 for (i = 0; i < num_queue_indexes; i++) {
3568 aligned_pointer = PTR_ALIGN(aligned_pointer,
3569 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3570 aligned_pointer += sizeof(pqi_index_t);
3571 }
3572
3573 alloc_length = (size_t)aligned_pointer +
3574 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3575
3576 alloc_length += PQI_EXTRA_SGL_MEMORY;
3577
3578 ctrl_info->queue_memory_base =
3579 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
3580 &ctrl_info->queue_memory_base_dma_handle,
3581 GFP_KERNEL);
3582
3583 if (!ctrl_info->queue_memory_base)
3584 return -ENOMEM;
3585
3586 ctrl_info->queue_memory_length = alloc_length;
3587
3588 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3589 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3590
3591 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3592 queue_group = &ctrl_info->queue_groups[i];
3593 queue_group->iq_element_array[RAID_PATH] = element_array;
3594 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3595 ctrl_info->queue_memory_base_dma_handle +
3596 (element_array - ctrl_info->queue_memory_base);
3597 element_array += element_array_length_per_iq;
3598 element_array = PTR_ALIGN(element_array,
3599 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3600 queue_group->iq_element_array[AIO_PATH] = element_array;
3601 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3602 ctrl_info->queue_memory_base_dma_handle +
3603 (element_array - ctrl_info->queue_memory_base);
3604 element_array += element_array_length_per_iq;
3605 element_array = PTR_ALIGN(element_array,
3606 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3607 }
3608
3609 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3610 queue_group = &ctrl_info->queue_groups[i];
3611 queue_group->oq_element_array = element_array;
3612 queue_group->oq_element_array_bus_addr =
3613 ctrl_info->queue_memory_base_dma_handle +
3614 (element_array - ctrl_info->queue_memory_base);
3615 element_array += element_array_length_per_oq;
3616 element_array = PTR_ALIGN(element_array,
3617 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3618 }
3619
3620 ctrl_info->event_queue.oq_element_array = element_array;
3621 ctrl_info->event_queue.oq_element_array_bus_addr =
3622 ctrl_info->queue_memory_base_dma_handle +
3623 (element_array - ctrl_info->queue_memory_base);
3624 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3625 PQI_EVENT_OQ_ELEMENT_LENGTH;
3626
3627 next_queue_index = (void __iomem *)PTR_ALIGN(element_array,
3628 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3629
3630 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3631 queue_group = &ctrl_info->queue_groups[i];
3632 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3633 queue_group->iq_ci_bus_addr[RAID_PATH] =
3634 ctrl_info->queue_memory_base_dma_handle +
3635 (next_queue_index -
3636 (void __iomem *)ctrl_info->queue_memory_base);
3637 next_queue_index += sizeof(pqi_index_t);
3638 next_queue_index = PTR_ALIGN(next_queue_index,
3639 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3640 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3641 queue_group->iq_ci_bus_addr[AIO_PATH] =
3642 ctrl_info->queue_memory_base_dma_handle +
3643 (next_queue_index -
3644 (void __iomem *)ctrl_info->queue_memory_base);
3645 next_queue_index += sizeof(pqi_index_t);
3646 next_queue_index = PTR_ALIGN(next_queue_index,
3647 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3648 queue_group->oq_pi = next_queue_index;
3649 queue_group->oq_pi_bus_addr =
3650 ctrl_info->queue_memory_base_dma_handle +
3651 (next_queue_index -
3652 (void __iomem *)ctrl_info->queue_memory_base);
3653 next_queue_index += sizeof(pqi_index_t);
3654 next_queue_index = PTR_ALIGN(next_queue_index,
3655 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3656 }
3657
3658 ctrl_info->event_queue.oq_pi = next_queue_index;
3659 ctrl_info->event_queue.oq_pi_bus_addr =
3660 ctrl_info->queue_memory_base_dma_handle +
3661 (next_queue_index -
3662 (void __iomem *)ctrl_info->queue_memory_base);
3663
3664 return 0;
3665 }
3666
3667 static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3668 {
3669 unsigned int i;
3670 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3671 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3672
3673 /*
3674 * Initialize the backpointers to the controller structure in
3675 * each operational queue group structure.
3676 */
3677 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3678 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3679
3680 /*
3681 * Assign IDs to all operational queues. Note that the IDs
3682 * assigned to operational IQs are independent of the IDs
3683 * assigned to operational OQs.
3684 */
3685 ctrl_info->event_queue.oq_id = next_oq_id++;
3686 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3687 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3688 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3689 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3690 }
3691
3692 /*
3693 * Assign MSI-X table entry indexes to all queues. Note that the
3694 * interrupt for the event queue is shared with the first queue group.
3695 */
3696 ctrl_info->event_queue.int_msg_num = 0;
3697 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3698 ctrl_info->queue_groups[i].int_msg_num = i;
3699
3700 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3701 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3702 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3703 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3704 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3705 }
3706 }
3707
3708 static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3709 {
3710 size_t alloc_length;
3711 struct pqi_admin_queues_aligned *admin_queues_aligned;
3712 struct pqi_admin_queues *admin_queues;
3713
3714 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3715 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3716
3717 ctrl_info->admin_queue_memory_base =
3718 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
3719 &ctrl_info->admin_queue_memory_base_dma_handle,
3720 GFP_KERNEL);
3721
3722 if (!ctrl_info->admin_queue_memory_base)
3723 return -ENOMEM;
3724
3725 ctrl_info->admin_queue_memory_length = alloc_length;
3726
3727 admin_queues = &ctrl_info->admin_queues;
3728 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3729 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3730 admin_queues->iq_element_array =
3731 &admin_queues_aligned->iq_element_array;
3732 admin_queues->oq_element_array =
3733 &admin_queues_aligned->oq_element_array;
3734 admin_queues->iq_ci = &admin_queues_aligned->iq_ci;
3735 admin_queues->oq_pi =
3736 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi;
3737
3738 admin_queues->iq_element_array_bus_addr =
3739 ctrl_info->admin_queue_memory_base_dma_handle +
3740 (admin_queues->iq_element_array -
3741 ctrl_info->admin_queue_memory_base);
3742 admin_queues->oq_element_array_bus_addr =
3743 ctrl_info->admin_queue_memory_base_dma_handle +
3744 (admin_queues->oq_element_array -
3745 ctrl_info->admin_queue_memory_base);
3746 admin_queues->iq_ci_bus_addr =
3747 ctrl_info->admin_queue_memory_base_dma_handle +
3748 ((void *)admin_queues->iq_ci -
3749 ctrl_info->admin_queue_memory_base);
3750 admin_queues->oq_pi_bus_addr =
3751 ctrl_info->admin_queue_memory_base_dma_handle +
3752 ((void __iomem *)admin_queues->oq_pi -
3753 (void __iomem *)ctrl_info->admin_queue_memory_base);
3754
3755 return 0;
3756 }
3757
3758 #define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ
3759 #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3760
3761 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3762 {
3763 struct pqi_device_registers __iomem *pqi_registers;
3764 struct pqi_admin_queues *admin_queues;
3765 unsigned long timeout;
3766 u8 status;
3767 u32 reg;
3768
3769 pqi_registers = ctrl_info->pqi_registers;
3770 admin_queues = &ctrl_info->admin_queues;
3771
3772 writeq((u64)admin_queues->iq_element_array_bus_addr,
3773 &pqi_registers->admin_iq_element_array_addr);
3774 writeq((u64)admin_queues->oq_element_array_bus_addr,
3775 &pqi_registers->admin_oq_element_array_addr);
3776 writeq((u64)admin_queues->iq_ci_bus_addr,
3777 &pqi_registers->admin_iq_ci_addr);
3778 writeq((u64)admin_queues->oq_pi_bus_addr,
3779 &pqi_registers->admin_oq_pi_addr);
3780
3781 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
3782 (PQI_ADMIN_OQ_NUM_ELEMENTS) << 8 |
3783 (admin_queues->int_msg_num << 16);
3784 writel(reg, &pqi_registers->admin_iq_num_elements);
3785 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3786 &pqi_registers->function_and_status_code);
3787
3788 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3789 while (1) {
3790 status = readb(&pqi_registers->function_and_status_code);
3791 if (status == PQI_STATUS_IDLE)
3792 break;
3793 if (time_after(jiffies, timeout))
3794 return -ETIMEDOUT;
3795 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
3796 }
3797
3798 /*
3799 * The offset registers are not initialized to the correct
3800 * offsets until *after* the create admin queue pair command
3801 * completes successfully.
3802 */
3803 admin_queues->iq_pi = ctrl_info->iomem_base +
3804 PQI_DEVICE_REGISTERS_OFFSET +
3805 readq(&pqi_registers->admin_iq_pi_offset);
3806 admin_queues->oq_ci = ctrl_info->iomem_base +
3807 PQI_DEVICE_REGISTERS_OFFSET +
3808 readq(&pqi_registers->admin_oq_ci_offset);
3809
3810 return 0;
3811 }
3812
3813 static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
3814 struct pqi_general_admin_request *request)
3815 {
3816 struct pqi_admin_queues *admin_queues;
3817 void *next_element;
3818 pqi_index_t iq_pi;
3819
3820 admin_queues = &ctrl_info->admin_queues;
3821 iq_pi = admin_queues->iq_pi_copy;
3822
3823 next_element = admin_queues->iq_element_array +
3824 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
3825
3826 memcpy(next_element, request, sizeof(*request));
3827
3828 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
3829 admin_queues->iq_pi_copy = iq_pi;
3830
3831 /*
3832 * This write notifies the controller that an IU is available to be
3833 * processed.
3834 */
3835 writel(iq_pi, admin_queues->iq_pi);
3836 }
3837
3838 #define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
3839
3840 static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
3841 struct pqi_general_admin_response *response)
3842 {
3843 struct pqi_admin_queues *admin_queues;
3844 pqi_index_t oq_pi;
3845 pqi_index_t oq_ci;
3846 unsigned long timeout;
3847
3848 admin_queues = &ctrl_info->admin_queues;
3849 oq_ci = admin_queues->oq_ci_copy;
3850
3851 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies;
3852
3853 while (1) {
3854 oq_pi = readl(admin_queues->oq_pi);
3855 if (oq_pi != oq_ci)
3856 break;
3857 if (time_after(jiffies, timeout)) {
3858 dev_err(&ctrl_info->pci_dev->dev,
3859 "timed out waiting for admin response\n");
3860 return -ETIMEDOUT;
3861 }
3862 if (!sis_is_firmware_running(ctrl_info))
3863 return -ENXIO;
3864 usleep_range(1000, 2000);
3865 }
3866
3867 memcpy(response, admin_queues->oq_element_array +
3868 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
3869
3870 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
3871 admin_queues->oq_ci_copy = oq_ci;
3872 writel(oq_ci, admin_queues->oq_ci);
3873
3874 return 0;
3875 }
3876
3877 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
3878 struct pqi_queue_group *queue_group, enum pqi_io_path path,
3879 struct pqi_io_request *io_request)
3880 {
3881 struct pqi_io_request *next;
3882 void *next_element;
3883 pqi_index_t iq_pi;
3884 pqi_index_t iq_ci;
3885 size_t iu_length;
3886 unsigned long flags;
3887 unsigned int num_elements_needed;
3888 unsigned int num_elements_to_end_of_queue;
3889 size_t copy_count;
3890 struct pqi_iu_header *request;
3891
3892 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
3893
3894 if (io_request) {
3895 io_request->queue_group = queue_group;
3896 list_add_tail(&io_request->request_list_entry,
3897 &queue_group->request_list[path]);
3898 }
3899
3900 iq_pi = queue_group->iq_pi_copy[path];
3901
3902 list_for_each_entry_safe(io_request, next,
3903 &queue_group->request_list[path], request_list_entry) {
3904
3905 request = io_request->iu;
3906
3907 iu_length = get_unaligned_le16(&request->iu_length) +
3908 PQI_REQUEST_HEADER_LENGTH;
3909 num_elements_needed =
3910 DIV_ROUND_UP(iu_length,
3911 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3912
3913 iq_ci = readl(queue_group->iq_ci[path]);
3914
3915 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
3916 ctrl_info->num_elements_per_iq))
3917 break;
3918
3919 put_unaligned_le16(queue_group->oq_id,
3920 &request->response_queue_id);
3921
3922 next_element = queue_group->iq_element_array[path] +
3923 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3924
3925 num_elements_to_end_of_queue =
3926 ctrl_info->num_elements_per_iq - iq_pi;
3927
3928 if (num_elements_needed <= num_elements_to_end_of_queue) {
3929 memcpy(next_element, request, iu_length);
3930 } else {
3931 copy_count = num_elements_to_end_of_queue *
3932 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
3933 memcpy(next_element, request, copy_count);
3934 memcpy(queue_group->iq_element_array[path],
3935 (u8 *)request + copy_count,
3936 iu_length - copy_count);
3937 }
3938
3939 iq_pi = (iq_pi + num_elements_needed) %
3940 ctrl_info->num_elements_per_iq;
3941
3942 list_del(&io_request->request_list_entry);
3943 }
3944
3945 if (iq_pi != queue_group->iq_pi_copy[path]) {
3946 queue_group->iq_pi_copy[path] = iq_pi;
3947 /*
3948 * This write notifies the controller that one or more IUs are
3949 * available to be processed.
3950 */
3951 writel(iq_pi, queue_group->iq_pi[path]);
3952 }
3953
3954 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
3955 }
3956
3957 #define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
3958
3959 static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
3960 struct completion *wait)
3961 {
3962 int rc;
3963
3964 while (1) {
3965 if (wait_for_completion_io_timeout(wait,
3966 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) {
3967 rc = 0;
3968 break;
3969 }
3970
3971 pqi_check_ctrl_health(ctrl_info);
3972 if (pqi_ctrl_offline(ctrl_info)) {
3973 rc = -ENXIO;
3974 break;
3975 }
3976 }
3977
3978 return rc;
3979 }
3980
3981 static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
3982 void *context)
3983 {
3984 struct completion *waiting = context;
3985
3986 complete(waiting);
3987 }
3988
3989 static int pqi_process_raid_io_error_synchronous(struct pqi_raid_error_info
3990 *error_info)
3991 {
3992 int rc = -EIO;
3993
3994 switch (error_info->data_out_result) {
3995 case PQI_DATA_IN_OUT_GOOD:
3996 if (error_info->status == SAM_STAT_GOOD)
3997 rc = 0;
3998 break;
3999 case PQI_DATA_IN_OUT_UNDERFLOW:
4000 if (error_info->status == SAM_STAT_GOOD ||
4001 error_info->status == SAM_STAT_CHECK_CONDITION)
4002 rc = 0;
4003 break;
4004 case PQI_DATA_IN_OUT_ABORTED:
4005 rc = PQI_CMD_STATUS_ABORTED;
4006 break;
4007 }
4008
4009 return rc;
4010 }
4011
4012 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
4013 struct pqi_iu_header *request, unsigned int flags,
4014 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
4015 {
4016 int rc = 0;
4017 struct pqi_io_request *io_request;
4018 unsigned long start_jiffies;
4019 unsigned long msecs_blocked;
4020 size_t iu_length;
4021 DECLARE_COMPLETION_ONSTACK(wait);
4022
4023 /*
4024 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
4025 * are mutually exclusive.
4026 */
4027
4028 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
4029 if (down_interruptible(&ctrl_info->sync_request_sem))
4030 return -ERESTARTSYS;
4031 } else {
4032 if (timeout_msecs == NO_TIMEOUT) {
4033 down(&ctrl_info->sync_request_sem);
4034 } else {
4035 start_jiffies = jiffies;
4036 if (down_timeout(&ctrl_info->sync_request_sem,
4037 msecs_to_jiffies(timeout_msecs)))
4038 return -ETIMEDOUT;
4039 msecs_blocked =
4040 jiffies_to_msecs(jiffies - start_jiffies);
4041 if (msecs_blocked >= timeout_msecs)
4042 return -ETIMEDOUT;
4043 timeout_msecs -= msecs_blocked;
4044 }
4045 }
4046
4047 pqi_ctrl_busy(ctrl_info);
4048 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
4049 if (timeout_msecs == 0) {
4050 pqi_ctrl_unbusy(ctrl_info);
4051 rc = -ETIMEDOUT;
4052 goto out;
4053 }
4054
4055 if (pqi_ctrl_offline(ctrl_info)) {
4056 pqi_ctrl_unbusy(ctrl_info);
4057 rc = -ENXIO;
4058 goto out;
4059 }
4060
4061 io_request = pqi_alloc_io_request(ctrl_info);
4062
4063 put_unaligned_le16(io_request->index,
4064 &(((struct pqi_raid_path_request *)request)->request_id));
4065
4066 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
4067 ((struct pqi_raid_path_request *)request)->error_index =
4068 ((struct pqi_raid_path_request *)request)->request_id;
4069
4070 iu_length = get_unaligned_le16(&request->iu_length) +
4071 PQI_REQUEST_HEADER_LENGTH;
4072 memcpy(io_request->iu, request, iu_length);
4073
4074 io_request->io_complete_callback = pqi_raid_synchronous_complete;
4075 io_request->context = &wait;
4076
4077 pqi_start_io(ctrl_info,
4078 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
4079 io_request);
4080
4081 pqi_ctrl_unbusy(ctrl_info);
4082
4083 if (timeout_msecs == NO_TIMEOUT) {
4084 pqi_wait_for_completion_io(ctrl_info, &wait);
4085 } else {
4086 if (!wait_for_completion_io_timeout(&wait,
4087 msecs_to_jiffies(timeout_msecs))) {
4088 dev_warn(&ctrl_info->pci_dev->dev,
4089 "command timed out\n");
4090 rc = -ETIMEDOUT;
4091 }
4092 }
4093
4094 if (error_info) {
4095 if (io_request->error_info)
4096 memcpy(error_info, io_request->error_info,
4097 sizeof(*error_info));
4098 else
4099 memset(error_info, 0, sizeof(*error_info));
4100 } else if (rc == 0 && io_request->error_info) {
4101 rc = pqi_process_raid_io_error_synchronous(
4102 io_request->error_info);
4103 }
4104
4105 pqi_free_io_request(io_request);
4106
4107 out:
4108 up(&ctrl_info->sync_request_sem);
4109
4110 return rc;
4111 }
4112
4113 static int pqi_validate_admin_response(
4114 struct pqi_general_admin_response *response, u8 expected_function_code)
4115 {
4116 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
4117 return -EINVAL;
4118
4119 if (get_unaligned_le16(&response->header.iu_length) !=
4120 PQI_GENERAL_ADMIN_IU_LENGTH)
4121 return -EINVAL;
4122
4123 if (response->function_code != expected_function_code)
4124 return -EINVAL;
4125
4126 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
4127 return -EINVAL;
4128
4129 return 0;
4130 }
4131
4132 static int pqi_submit_admin_request_synchronous(
4133 struct pqi_ctrl_info *ctrl_info,
4134 struct pqi_general_admin_request *request,
4135 struct pqi_general_admin_response *response)
4136 {
4137 int rc;
4138
4139 pqi_submit_admin_request(ctrl_info, request);
4140
4141 rc = pqi_poll_for_admin_response(ctrl_info, response);
4142
4143 if (rc == 0)
4144 rc = pqi_validate_admin_response(response,
4145 request->function_code);
4146
4147 return rc;
4148 }
4149
4150 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
4151 {
4152 int rc;
4153 struct pqi_general_admin_request request;
4154 struct pqi_general_admin_response response;
4155 struct pqi_device_capability *capability;
4156 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
4157
4158 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
4159 if (!capability)
4160 return -ENOMEM;
4161
4162 memset(&request, 0, sizeof(request));
4163
4164 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4165 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4166 &request.header.iu_length);
4167 request.function_code =
4168 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
4169 put_unaligned_le32(sizeof(*capability),
4170 &request.data.report_device_capability.buffer_length);
4171
4172 rc = pqi_map_single(ctrl_info->pci_dev,
4173 &request.data.report_device_capability.sg_descriptor,
4174 capability, sizeof(*capability),
4175 DMA_FROM_DEVICE);
4176 if (rc)
4177 goto out;
4178
4179 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4180 &response);
4181
4182 pqi_pci_unmap(ctrl_info->pci_dev,
4183 &request.data.report_device_capability.sg_descriptor, 1,
4184 DMA_FROM_DEVICE);
4185
4186 if (rc)
4187 goto out;
4188
4189 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
4190 rc = -EIO;
4191 goto out;
4192 }
4193
4194 ctrl_info->max_inbound_queues =
4195 get_unaligned_le16(&capability->max_inbound_queues);
4196 ctrl_info->max_elements_per_iq =
4197 get_unaligned_le16(&capability->max_elements_per_iq);
4198 ctrl_info->max_iq_element_length =
4199 get_unaligned_le16(&capability->max_iq_element_length)
4200 * 16;
4201 ctrl_info->max_outbound_queues =
4202 get_unaligned_le16(&capability->max_outbound_queues);
4203 ctrl_info->max_elements_per_oq =
4204 get_unaligned_le16(&capability->max_elements_per_oq);
4205 ctrl_info->max_oq_element_length =
4206 get_unaligned_le16(&capability->max_oq_element_length)
4207 * 16;
4208
4209 sop_iu_layer_descriptor =
4210 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
4211
4212 ctrl_info->max_inbound_iu_length_per_firmware =
4213 get_unaligned_le16(
4214 &sop_iu_layer_descriptor->max_inbound_iu_length);
4215 ctrl_info->inbound_spanning_supported =
4216 sop_iu_layer_descriptor->inbound_spanning_supported;
4217 ctrl_info->outbound_spanning_supported =
4218 sop_iu_layer_descriptor->outbound_spanning_supported;
4219
4220 out:
4221 kfree(capability);
4222
4223 return rc;
4224 }
4225
4226 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
4227 {
4228 if (ctrl_info->max_iq_element_length <
4229 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4230 dev_err(&ctrl_info->pci_dev->dev,
4231 "max. inbound queue element length of %d is less than the required length of %d\n",
4232 ctrl_info->max_iq_element_length,
4233 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4234 return -EINVAL;
4235 }
4236
4237 if (ctrl_info->max_oq_element_length <
4238 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
4239 dev_err(&ctrl_info->pci_dev->dev,
4240 "max. outbound queue element length of %d is less than the required length of %d\n",
4241 ctrl_info->max_oq_element_length,
4242 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
4243 return -EINVAL;
4244 }
4245
4246 if (ctrl_info->max_inbound_iu_length_per_firmware <
4247 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4248 dev_err(&ctrl_info->pci_dev->dev,
4249 "max. inbound IU length of %u is less than the min. required length of %d\n",
4250 ctrl_info->max_inbound_iu_length_per_firmware,
4251 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4252 return -EINVAL;
4253 }
4254
4255 if (!ctrl_info->inbound_spanning_supported) {
4256 dev_err(&ctrl_info->pci_dev->dev,
4257 "the controller does not support inbound spanning\n");
4258 return -EINVAL;
4259 }
4260
4261 if (ctrl_info->outbound_spanning_supported) {
4262 dev_err(&ctrl_info->pci_dev->dev,
4263 "the controller supports outbound spanning but this driver does not\n");
4264 return -EINVAL;
4265 }
4266
4267 return 0;
4268 }
4269
4270 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
4271 {
4272 int rc;
4273 struct pqi_event_queue *event_queue;
4274 struct pqi_general_admin_request request;
4275 struct pqi_general_admin_response response;
4276
4277 event_queue = &ctrl_info->event_queue;
4278
4279 /*
4280 * Create OQ (Outbound Queue - device to host queue) to dedicate
4281 * to events.
4282 */
4283 memset(&request, 0, sizeof(request));
4284 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4285 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4286 &request.header.iu_length);
4287 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4288 put_unaligned_le16(event_queue->oq_id,
4289 &request.data.create_operational_oq.queue_id);
4290 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
4291 &request.data.create_operational_oq.element_array_addr);
4292 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
4293 &request.data.create_operational_oq.pi_addr);
4294 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
4295 &request.data.create_operational_oq.num_elements);
4296 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
4297 &request.data.create_operational_oq.element_length);
4298 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4299 put_unaligned_le16(event_queue->int_msg_num,
4300 &request.data.create_operational_oq.int_msg_num);
4301
4302 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4303 &response);
4304 if (rc)
4305 return rc;
4306
4307 event_queue->oq_ci = ctrl_info->iomem_base +
4308 PQI_DEVICE_REGISTERS_OFFSET +
4309 get_unaligned_le64(
4310 &response.data.create_operational_oq.oq_ci_offset);
4311
4312 return 0;
4313 }
4314
4315 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
4316 unsigned int group_number)
4317 {
4318 int rc;
4319 struct pqi_queue_group *queue_group;
4320 struct pqi_general_admin_request request;
4321 struct pqi_general_admin_response response;
4322
4323 queue_group = &ctrl_info->queue_groups[group_number];
4324
4325 /*
4326 * Create IQ (Inbound Queue - host to device queue) for
4327 * RAID path.
4328 */
4329 memset(&request, 0, sizeof(request));
4330 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4331 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4332 &request.header.iu_length);
4333 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4334 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
4335 &request.data.create_operational_iq.queue_id);
4336 put_unaligned_le64(
4337 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
4338 &request.data.create_operational_iq.element_array_addr);
4339 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
4340 &request.data.create_operational_iq.ci_addr);
4341 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4342 &request.data.create_operational_iq.num_elements);
4343 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4344 &request.data.create_operational_iq.element_length);
4345 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4346
4347 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4348 &response);
4349 if (rc) {
4350 dev_err(&ctrl_info->pci_dev->dev,
4351 "error creating inbound RAID queue\n");
4352 return rc;
4353 }
4354
4355 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
4356 PQI_DEVICE_REGISTERS_OFFSET +
4357 get_unaligned_le64(
4358 &response.data.create_operational_iq.iq_pi_offset);
4359
4360 /*
4361 * Create IQ (Inbound Queue - host to device queue) for
4362 * Advanced I/O (AIO) path.
4363 */
4364 memset(&request, 0, sizeof(request));
4365 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4366 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4367 &request.header.iu_length);
4368 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4369 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4370 &request.data.create_operational_iq.queue_id);
4371 put_unaligned_le64((u64)queue_group->
4372 iq_element_array_bus_addr[AIO_PATH],
4373 &request.data.create_operational_iq.element_array_addr);
4374 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4375 &request.data.create_operational_iq.ci_addr);
4376 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4377 &request.data.create_operational_iq.num_elements);
4378 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4379 &request.data.create_operational_iq.element_length);
4380 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4381
4382 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4383 &response);
4384 if (rc) {
4385 dev_err(&ctrl_info->pci_dev->dev,
4386 "error creating inbound AIO queue\n");
4387 return rc;
4388 }
4389
4390 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4391 PQI_DEVICE_REGISTERS_OFFSET +
4392 get_unaligned_le64(
4393 &response.data.create_operational_iq.iq_pi_offset);
4394
4395 /*
4396 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4397 * assumed to be for RAID path I/O unless we change the queue's
4398 * property.
4399 */
4400 memset(&request, 0, sizeof(request));
4401 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4402 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4403 &request.header.iu_length);
4404 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4405 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4406 &request.data.change_operational_iq_properties.queue_id);
4407 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4408 &request.data.change_operational_iq_properties.vendor_specific);
4409
4410 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4411 &response);
4412 if (rc) {
4413 dev_err(&ctrl_info->pci_dev->dev,
4414 "error changing queue property\n");
4415 return rc;
4416 }
4417
4418 /*
4419 * Create OQ (Outbound Queue - device to host queue).
4420 */
4421 memset(&request, 0, sizeof(request));
4422 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4423 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4424 &request.header.iu_length);
4425 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4426 put_unaligned_le16(queue_group->oq_id,
4427 &request.data.create_operational_oq.queue_id);
4428 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4429 &request.data.create_operational_oq.element_array_addr);
4430 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4431 &request.data.create_operational_oq.pi_addr);
4432 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4433 &request.data.create_operational_oq.num_elements);
4434 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4435 &request.data.create_operational_oq.element_length);
4436 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4437 put_unaligned_le16(queue_group->int_msg_num,
4438 &request.data.create_operational_oq.int_msg_num);
4439
4440 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4441 &response);
4442 if (rc) {
4443 dev_err(&ctrl_info->pci_dev->dev,
4444 "error creating outbound queue\n");
4445 return rc;
4446 }
4447
4448 queue_group->oq_ci = ctrl_info->iomem_base +
4449 PQI_DEVICE_REGISTERS_OFFSET +
4450 get_unaligned_le64(
4451 &response.data.create_operational_oq.oq_ci_offset);
4452
4453 return 0;
4454 }
4455
4456 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4457 {
4458 int rc;
4459 unsigned int i;
4460
4461 rc = pqi_create_event_queue(ctrl_info);
4462 if (rc) {
4463 dev_err(&ctrl_info->pci_dev->dev,
4464 "error creating event queue\n");
4465 return rc;
4466 }
4467
4468 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4469 rc = pqi_create_queue_group(ctrl_info, i);
4470 if (rc) {
4471 dev_err(&ctrl_info->pci_dev->dev,
4472 "error creating queue group number %u/%u\n",
4473 i, ctrl_info->num_queue_groups);
4474 return rc;
4475 }
4476 }
4477
4478 return 0;
4479 }
4480
4481 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4482 (offsetof(struct pqi_event_config, descriptors) + \
4483 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4484
4485 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4486 bool enable_events)
4487 {
4488 int rc;
4489 unsigned int i;
4490 struct pqi_event_config *event_config;
4491 struct pqi_event_descriptor *event_descriptor;
4492 struct pqi_general_management_request request;
4493
4494 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4495 GFP_KERNEL);
4496 if (!event_config)
4497 return -ENOMEM;
4498
4499 memset(&request, 0, sizeof(request));
4500
4501 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4502 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4503 data.report_event_configuration.sg_descriptors[1]) -
4504 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4505 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4506 &request.data.report_event_configuration.buffer_length);
4507
4508 rc = pqi_map_single(ctrl_info->pci_dev,
4509 request.data.report_event_configuration.sg_descriptors,
4510 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4511 DMA_FROM_DEVICE);
4512 if (rc)
4513 goto out;
4514
4515 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4516 0, NULL, NO_TIMEOUT);
4517
4518 pqi_pci_unmap(ctrl_info->pci_dev,
4519 request.data.report_event_configuration.sg_descriptors, 1,
4520 DMA_FROM_DEVICE);
4521
4522 if (rc)
4523 goto out;
4524
4525 for (i = 0; i < event_config->num_event_descriptors; i++) {
4526 event_descriptor = &event_config->descriptors[i];
4527 if (enable_events &&
4528 pqi_is_supported_event(event_descriptor->event_type))
4529 put_unaligned_le16(ctrl_info->event_queue.oq_id,
4530 &event_descriptor->oq_id);
4531 else
4532 put_unaligned_le16(0, &event_descriptor->oq_id);
4533 }
4534
4535 memset(&request, 0, sizeof(request));
4536
4537 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4538 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4539 data.report_event_configuration.sg_descriptors[1]) -
4540 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4541 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4542 &request.data.report_event_configuration.buffer_length);
4543
4544 rc = pqi_map_single(ctrl_info->pci_dev,
4545 request.data.report_event_configuration.sg_descriptors,
4546 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4547 DMA_TO_DEVICE);
4548 if (rc)
4549 goto out;
4550
4551 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4552 NULL, NO_TIMEOUT);
4553
4554 pqi_pci_unmap(ctrl_info->pci_dev,
4555 request.data.report_event_configuration.sg_descriptors, 1,
4556 DMA_TO_DEVICE);
4557
4558 out:
4559 kfree(event_config);
4560
4561 return rc;
4562 }
4563
4564 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4565 {
4566 return pqi_configure_events(ctrl_info, true);
4567 }
4568
4569 static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4570 {
4571 return pqi_configure_events(ctrl_info, false);
4572 }
4573
4574 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4575 {
4576 unsigned int i;
4577 struct device *dev;
4578 size_t sg_chain_buffer_length;
4579 struct pqi_io_request *io_request;
4580
4581 if (!ctrl_info->io_request_pool)
4582 return;
4583
4584 dev = &ctrl_info->pci_dev->dev;
4585 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4586 io_request = ctrl_info->io_request_pool;
4587
4588 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4589 kfree(io_request->iu);
4590 if (!io_request->sg_chain_buffer)
4591 break;
4592 dma_free_coherent(dev, sg_chain_buffer_length,
4593 io_request->sg_chain_buffer,
4594 io_request->sg_chain_buffer_dma_handle);
4595 io_request++;
4596 }
4597
4598 kfree(ctrl_info->io_request_pool);
4599 ctrl_info->io_request_pool = NULL;
4600 }
4601
4602 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4603 {
4604 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev,
4605 ctrl_info->error_buffer_length,
4606 &ctrl_info->error_buffer_dma_handle,
4607 GFP_KERNEL);
4608
4609 if (!ctrl_info->error_buffer)
4610 return -ENOMEM;
4611
4612 return 0;
4613 }
4614
4615 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4616 {
4617 unsigned int i;
4618 void *sg_chain_buffer;
4619 size_t sg_chain_buffer_length;
4620 dma_addr_t sg_chain_buffer_dma_handle;
4621 struct device *dev;
4622 struct pqi_io_request *io_request;
4623
4624 ctrl_info->io_request_pool =
4625 kcalloc(ctrl_info->max_io_slots,
4626 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
4627
4628 if (!ctrl_info->io_request_pool) {
4629 dev_err(&ctrl_info->pci_dev->dev,
4630 "failed to allocate I/O request pool\n");
4631 goto error;
4632 }
4633
4634 dev = &ctrl_info->pci_dev->dev;
4635 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4636 io_request = ctrl_info->io_request_pool;
4637
4638 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4639 io_request->iu =
4640 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
4641
4642 if (!io_request->iu) {
4643 dev_err(&ctrl_info->pci_dev->dev,
4644 "failed to allocate IU buffers\n");
4645 goto error;
4646 }
4647
4648 sg_chain_buffer = dma_alloc_coherent(dev,
4649 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4650 GFP_KERNEL);
4651
4652 if (!sg_chain_buffer) {
4653 dev_err(&ctrl_info->pci_dev->dev,
4654 "failed to allocate PQI scatter-gather chain buffers\n");
4655 goto error;
4656 }
4657
4658 io_request->index = i;
4659 io_request->sg_chain_buffer = sg_chain_buffer;
4660 io_request->sg_chain_buffer_dma_handle =
4661 sg_chain_buffer_dma_handle;
4662 io_request++;
4663 }
4664
4665 return 0;
4666
4667 error:
4668 pqi_free_all_io_requests(ctrl_info);
4669
4670 return -ENOMEM;
4671 }
4672
4673 /*
4674 * Calculate required resources that are sized based on max. outstanding
4675 * requests and max. transfer size.
4676 */
4677
4678 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4679 {
4680 u32 max_transfer_size;
4681 u32 max_sg_entries;
4682
4683 ctrl_info->scsi_ml_can_queue =
4684 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4685 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4686
4687 ctrl_info->error_buffer_length =
4688 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4689
4690 if (reset_devices)
4691 max_transfer_size = min(ctrl_info->max_transfer_size,
4692 PQI_MAX_TRANSFER_SIZE_KDUMP);
4693 else
4694 max_transfer_size = min(ctrl_info->max_transfer_size,
4695 PQI_MAX_TRANSFER_SIZE);
4696
4697 max_sg_entries = max_transfer_size / PAGE_SIZE;
4698
4699 /* +1 to cover when the buffer is not page-aligned. */
4700 max_sg_entries++;
4701
4702 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4703
4704 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4705
4706 ctrl_info->sg_chain_buffer_length =
4707 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4708 PQI_EXTRA_SGL_MEMORY;
4709 ctrl_info->sg_tablesize = max_sg_entries;
4710 ctrl_info->max_sectors = max_transfer_size / 512;
4711 }
4712
4713 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4714 {
4715 int num_queue_groups;
4716 u16 num_elements_per_iq;
4717 u16 num_elements_per_oq;
4718
4719 if (reset_devices) {
4720 num_queue_groups = 1;
4721 } else {
4722 int num_cpus;
4723 int max_queue_groups;
4724
4725 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4726 ctrl_info->max_outbound_queues - 1);
4727 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
4728
4729 num_cpus = num_online_cpus();
4730 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4731 num_queue_groups = min(num_queue_groups, max_queue_groups);
4732 }
4733
4734 ctrl_info->num_queue_groups = num_queue_groups;
4735 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
4736
4737 /*
4738 * Make sure that the max. inbound IU length is an even multiple
4739 * of our inbound element length.
4740 */
4741 ctrl_info->max_inbound_iu_length =
4742 (ctrl_info->max_inbound_iu_length_per_firmware /
4743 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4744 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
4745
4746 num_elements_per_iq =
4747 (ctrl_info->max_inbound_iu_length /
4748 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4749
4750 /* Add one because one element in each queue is unusable. */
4751 num_elements_per_iq++;
4752
4753 num_elements_per_iq = min(num_elements_per_iq,
4754 ctrl_info->max_elements_per_iq);
4755
4756 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4757 num_elements_per_oq = min(num_elements_per_oq,
4758 ctrl_info->max_elements_per_oq);
4759
4760 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4761 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4762
4763 ctrl_info->max_sg_per_iu =
4764 ((ctrl_info->max_inbound_iu_length -
4765 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4766 sizeof(struct pqi_sg_descriptor)) +
4767 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
4768 }
4769
4770 static inline void pqi_set_sg_descriptor(
4771 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg)
4772 {
4773 u64 address = (u64)sg_dma_address(sg);
4774 unsigned int length = sg_dma_len(sg);
4775
4776 put_unaligned_le64(address, &sg_descriptor->address);
4777 put_unaligned_le32(length, &sg_descriptor->length);
4778 put_unaligned_le32(0, &sg_descriptor->flags);
4779 }
4780
4781 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
4782 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
4783 struct pqi_io_request *io_request)
4784 {
4785 int i;
4786 u16 iu_length;
4787 int sg_count;
4788 bool chained;
4789 unsigned int num_sg_in_iu;
4790 unsigned int max_sg_per_iu;
4791 struct scatterlist *sg;
4792 struct pqi_sg_descriptor *sg_descriptor;
4793
4794 sg_count = scsi_dma_map(scmd);
4795 if (sg_count < 0)
4796 return sg_count;
4797
4798 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
4799 PQI_REQUEST_HEADER_LENGTH;
4800
4801 if (sg_count == 0)
4802 goto out;
4803
4804 sg = scsi_sglist(scmd);
4805 sg_descriptor = request->sg_descriptors;
4806 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4807 chained = false;
4808 num_sg_in_iu = 0;
4809 i = 0;
4810
4811 while (1) {
4812 pqi_set_sg_descriptor(sg_descriptor, sg);
4813 if (!chained)
4814 num_sg_in_iu++;
4815 i++;
4816 if (i == sg_count)
4817 break;
4818 sg_descriptor++;
4819 if (i == max_sg_per_iu) {
4820 put_unaligned_le64(
4821 (u64)io_request->sg_chain_buffer_dma_handle,
4822 &sg_descriptor->address);
4823 put_unaligned_le32((sg_count - num_sg_in_iu)
4824 * sizeof(*sg_descriptor),
4825 &sg_descriptor->length);
4826 put_unaligned_le32(CISS_SG_CHAIN,
4827 &sg_descriptor->flags);
4828 chained = true;
4829 num_sg_in_iu++;
4830 sg_descriptor = io_request->sg_chain_buffer;
4831 }
4832 sg = sg_next(sg);
4833 }
4834
4835 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4836 request->partial = chained;
4837 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4838
4839 out:
4840 put_unaligned_le16(iu_length, &request->header.iu_length);
4841
4842 return 0;
4843 }
4844
4845 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
4846 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
4847 struct pqi_io_request *io_request)
4848 {
4849 int i;
4850 u16 iu_length;
4851 int sg_count;
4852 bool chained;
4853 unsigned int num_sg_in_iu;
4854 unsigned int max_sg_per_iu;
4855 struct scatterlist *sg;
4856 struct pqi_sg_descriptor *sg_descriptor;
4857
4858 sg_count = scsi_dma_map(scmd);
4859 if (sg_count < 0)
4860 return sg_count;
4861
4862 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
4863 PQI_REQUEST_HEADER_LENGTH;
4864 num_sg_in_iu = 0;
4865
4866 if (sg_count == 0)
4867 goto out;
4868
4869 sg = scsi_sglist(scmd);
4870 sg_descriptor = request->sg_descriptors;
4871 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4872 chained = false;
4873 i = 0;
4874
4875 while (1) {
4876 pqi_set_sg_descriptor(sg_descriptor, sg);
4877 if (!chained)
4878 num_sg_in_iu++;
4879 i++;
4880 if (i == sg_count)
4881 break;
4882 sg_descriptor++;
4883 if (i == max_sg_per_iu) {
4884 put_unaligned_le64(
4885 (u64)io_request->sg_chain_buffer_dma_handle,
4886 &sg_descriptor->address);
4887 put_unaligned_le32((sg_count - num_sg_in_iu)
4888 * sizeof(*sg_descriptor),
4889 &sg_descriptor->length);
4890 put_unaligned_le32(CISS_SG_CHAIN,
4891 &sg_descriptor->flags);
4892 chained = true;
4893 num_sg_in_iu++;
4894 sg_descriptor = io_request->sg_chain_buffer;
4895 }
4896 sg = sg_next(sg);
4897 }
4898
4899 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4900 request->partial = chained;
4901 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4902
4903 out:
4904 put_unaligned_le16(iu_length, &request->header.iu_length);
4905 request->num_sg_descriptors = num_sg_in_iu;
4906
4907 return 0;
4908 }
4909
4910 static void pqi_raid_io_complete(struct pqi_io_request *io_request,
4911 void *context)
4912 {
4913 struct scsi_cmnd *scmd;
4914
4915 scmd = io_request->scmd;
4916 pqi_free_io_request(io_request);
4917 scsi_dma_unmap(scmd);
4918 pqi_scsi_done(scmd);
4919 }
4920
4921 static int pqi_raid_submit_scsi_cmd_with_io_request(
4922 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
4923 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4924 struct pqi_queue_group *queue_group)
4925 {
4926 int rc;
4927 size_t cdb_length;
4928 struct pqi_raid_path_request *request;
4929
4930 io_request->io_complete_callback = pqi_raid_io_complete;
4931 io_request->scmd = scmd;
4932
4933 request = io_request->iu;
4934 memset(request, 0,
4935 offsetof(struct pqi_raid_path_request, sg_descriptors));
4936
4937 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
4938 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4939 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4940 put_unaligned_le16(io_request->index, &request->request_id);
4941 request->error_index = request->request_id;
4942 memcpy(request->lun_number, device->scsi3addr,
4943 sizeof(request->lun_number));
4944
4945 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
4946 memcpy(request->cdb, scmd->cmnd, cdb_length);
4947
4948 switch (cdb_length) {
4949 case 6:
4950 case 10:
4951 case 12:
4952 case 16:
4953 /* No bytes in the Additional CDB bytes field */
4954 request->additional_cdb_bytes_usage =
4955 SOP_ADDITIONAL_CDB_BYTES_0;
4956 break;
4957 case 20:
4958 /* 4 bytes in the Additional cdb field */
4959 request->additional_cdb_bytes_usage =
4960 SOP_ADDITIONAL_CDB_BYTES_4;
4961 break;
4962 case 24:
4963 /* 8 bytes in the Additional cdb field */
4964 request->additional_cdb_bytes_usage =
4965 SOP_ADDITIONAL_CDB_BYTES_8;
4966 break;
4967 case 28:
4968 /* 12 bytes in the Additional cdb field */
4969 request->additional_cdb_bytes_usage =
4970 SOP_ADDITIONAL_CDB_BYTES_12;
4971 break;
4972 case 32:
4973 default:
4974 /* 16 bytes in the Additional cdb field */
4975 request->additional_cdb_bytes_usage =
4976 SOP_ADDITIONAL_CDB_BYTES_16;
4977 break;
4978 }
4979
4980 switch (scmd->sc_data_direction) {
4981 case DMA_TO_DEVICE:
4982 request->data_direction = SOP_READ_FLAG;
4983 break;
4984 case DMA_FROM_DEVICE:
4985 request->data_direction = SOP_WRITE_FLAG;
4986 break;
4987 case DMA_NONE:
4988 request->data_direction = SOP_NO_DIRECTION_FLAG;
4989 break;
4990 case DMA_BIDIRECTIONAL:
4991 request->data_direction = SOP_BIDIRECTIONAL;
4992 break;
4993 default:
4994 dev_err(&ctrl_info->pci_dev->dev,
4995 "unknown data direction: %d\n",
4996 scmd->sc_data_direction);
4997 break;
4998 }
4999
5000 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
5001 if (rc) {
5002 pqi_free_io_request(io_request);
5003 return SCSI_MLQUEUE_HOST_BUSY;
5004 }
5005
5006 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
5007
5008 return 0;
5009 }
5010
5011 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5012 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5013 struct pqi_queue_group *queue_group)
5014 {
5015 struct pqi_io_request *io_request;
5016
5017 io_request = pqi_alloc_io_request(ctrl_info);
5018
5019 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5020 device, scmd, queue_group);
5021 }
5022
5023 static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
5024 {
5025 if (!pqi_ctrl_blocked(ctrl_info))
5026 schedule_work(&ctrl_info->raid_bypass_retry_work);
5027 }
5028
5029 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
5030 {
5031 struct scsi_cmnd *scmd;
5032 struct pqi_scsi_dev *device;
5033 struct pqi_ctrl_info *ctrl_info;
5034
5035 if (!io_request->raid_bypass)
5036 return false;
5037
5038 scmd = io_request->scmd;
5039 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
5040 return false;
5041 if (host_byte(scmd->result) == DID_NO_CONNECT)
5042 return false;
5043
5044 device = scmd->device->hostdata;
5045 if (pqi_device_offline(device))
5046 return false;
5047
5048 ctrl_info = shost_to_hba(scmd->device->host);
5049 if (pqi_ctrl_offline(ctrl_info))
5050 return false;
5051
5052 return true;
5053 }
5054
5055 static inline void pqi_add_to_raid_bypass_retry_list(
5056 struct pqi_ctrl_info *ctrl_info,
5057 struct pqi_io_request *io_request, bool at_head)
5058 {
5059 unsigned long flags;
5060
5061 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5062 if (at_head)
5063 list_add(&io_request->request_list_entry,
5064 &ctrl_info->raid_bypass_retry_list);
5065 else
5066 list_add_tail(&io_request->request_list_entry,
5067 &ctrl_info->raid_bypass_retry_list);
5068 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5069 }
5070
5071 static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
5072 void *context)
5073 {
5074 struct scsi_cmnd *scmd;
5075
5076 scmd = io_request->scmd;
5077 pqi_free_io_request(io_request);
5078 pqi_scsi_done(scmd);
5079 }
5080
5081 static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
5082 {
5083 struct scsi_cmnd *scmd;
5084 struct pqi_ctrl_info *ctrl_info;
5085
5086 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
5087 scmd = io_request->scmd;
5088 scmd->result = 0;
5089 ctrl_info = shost_to_hba(scmd->device->host);
5090
5091 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
5092 pqi_schedule_bypass_retry(ctrl_info);
5093 }
5094
5095 static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
5096 {
5097 struct scsi_cmnd *scmd;
5098 struct pqi_scsi_dev *device;
5099 struct pqi_ctrl_info *ctrl_info;
5100 struct pqi_queue_group *queue_group;
5101
5102 scmd = io_request->scmd;
5103 device = scmd->device->hostdata;
5104 if (pqi_device_in_reset(device)) {
5105 pqi_free_io_request(io_request);
5106 set_host_byte(scmd, DID_RESET);
5107 pqi_scsi_done(scmd);
5108 return 0;
5109 }
5110
5111 ctrl_info = shost_to_hba(scmd->device->host);
5112 queue_group = io_request->queue_group;
5113
5114 pqi_reinit_io_request(io_request);
5115
5116 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5117 device, scmd, queue_group);
5118 }
5119
5120 static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
5121 struct pqi_ctrl_info *ctrl_info)
5122 {
5123 unsigned long flags;
5124 struct pqi_io_request *io_request;
5125
5126 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5127 io_request = list_first_entry_or_null(
5128 &ctrl_info->raid_bypass_retry_list,
5129 struct pqi_io_request, request_list_entry);
5130 if (io_request)
5131 list_del(&io_request->request_list_entry);
5132 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5133
5134 return io_request;
5135 }
5136
5137 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
5138 {
5139 int rc;
5140 struct pqi_io_request *io_request;
5141
5142 pqi_ctrl_busy(ctrl_info);
5143
5144 while (1) {
5145 if (pqi_ctrl_blocked(ctrl_info))
5146 break;
5147 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
5148 if (!io_request)
5149 break;
5150 rc = pqi_retry_raid_bypass(io_request);
5151 if (rc) {
5152 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
5153 true);
5154 pqi_schedule_bypass_retry(ctrl_info);
5155 break;
5156 }
5157 }
5158
5159 pqi_ctrl_unbusy(ctrl_info);
5160 }
5161
5162 static void pqi_raid_bypass_retry_worker(struct work_struct *work)
5163 {
5164 struct pqi_ctrl_info *ctrl_info;
5165
5166 ctrl_info = container_of(work, struct pqi_ctrl_info,
5167 raid_bypass_retry_work);
5168 pqi_retry_raid_bypass_requests(ctrl_info);
5169 }
5170
5171 static void pqi_clear_all_queued_raid_bypass_retries(
5172 struct pqi_ctrl_info *ctrl_info)
5173 {
5174 unsigned long flags;
5175
5176 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5177 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
5178 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5179 }
5180
5181 static void pqi_aio_io_complete(struct pqi_io_request *io_request,
5182 void *context)
5183 {
5184 struct scsi_cmnd *scmd;
5185
5186 scmd = io_request->scmd;
5187 scsi_dma_unmap(scmd);
5188 if (io_request->status == -EAGAIN)
5189 set_host_byte(scmd, DID_IMM_RETRY);
5190 else if (pqi_raid_bypass_retry_needed(io_request)) {
5191 pqi_queue_raid_bypass_retry(io_request);
5192 return;
5193 }
5194 pqi_free_io_request(io_request);
5195 pqi_scsi_done(scmd);
5196 }
5197
5198 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5199 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5200 struct pqi_queue_group *queue_group)
5201 {
5202 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
5203 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
5204 }
5205
5206 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
5207 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
5208 unsigned int cdb_length, struct pqi_queue_group *queue_group,
5209 struct pqi_encryption_info *encryption_info, bool raid_bypass)
5210 {
5211 int rc;
5212 struct pqi_io_request *io_request;
5213 struct pqi_aio_path_request *request;
5214
5215 io_request = pqi_alloc_io_request(ctrl_info);
5216 io_request->io_complete_callback = pqi_aio_io_complete;
5217 io_request->scmd = scmd;
5218 io_request->raid_bypass = raid_bypass;
5219
5220 request = io_request->iu;
5221 memset(request, 0,
5222 offsetof(struct pqi_raid_path_request, sg_descriptors));
5223
5224 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
5225 put_unaligned_le32(aio_handle, &request->nexus_id);
5226 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
5227 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5228 put_unaligned_le16(io_request->index, &request->request_id);
5229 request->error_index = request->request_id;
5230 if (cdb_length > sizeof(request->cdb))
5231 cdb_length = sizeof(request->cdb);
5232 request->cdb_length = cdb_length;
5233 memcpy(request->cdb, cdb, cdb_length);
5234
5235 switch (scmd->sc_data_direction) {
5236 case DMA_TO_DEVICE:
5237 request->data_direction = SOP_READ_FLAG;
5238 break;
5239 case DMA_FROM_DEVICE:
5240 request->data_direction = SOP_WRITE_FLAG;
5241 break;
5242 case DMA_NONE:
5243 request->data_direction = SOP_NO_DIRECTION_FLAG;
5244 break;
5245 case DMA_BIDIRECTIONAL:
5246 request->data_direction = SOP_BIDIRECTIONAL;
5247 break;
5248 default:
5249 dev_err(&ctrl_info->pci_dev->dev,
5250 "unknown data direction: %d\n",
5251 scmd->sc_data_direction);
5252 break;
5253 }
5254
5255 if (encryption_info) {
5256 request->encryption_enable = true;
5257 put_unaligned_le16(encryption_info->data_encryption_key_index,
5258 &request->data_encryption_key_index);
5259 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5260 &request->encrypt_tweak_lower);
5261 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5262 &request->encrypt_tweak_upper);
5263 }
5264
5265 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
5266 if (rc) {
5267 pqi_free_io_request(io_request);
5268 return SCSI_MLQUEUE_HOST_BUSY;
5269 }
5270
5271 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5272
5273 return 0;
5274 }
5275
5276 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
5277 struct scsi_cmnd *scmd)
5278 {
5279 u16 hw_queue;
5280
5281 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
5282 if (hw_queue > ctrl_info->max_hw_queue_index)
5283 hw_queue = 0;
5284
5285 return hw_queue;
5286 }
5287
5288 /*
5289 * This function gets called just before we hand the completed SCSI request
5290 * back to the SML.
5291 */
5292
5293 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
5294 {
5295 struct pqi_scsi_dev *device;
5296
5297 if (!scmd->device) {
5298 set_host_byte(scmd, DID_NO_CONNECT);
5299 return;
5300 }
5301
5302 device = scmd->device->hostdata;
5303 if (!device) {
5304 set_host_byte(scmd, DID_NO_CONNECT);
5305 return;
5306 }
5307
5308 atomic_dec(&device->scsi_cmds_outstanding);
5309 }
5310
5311 static int pqi_scsi_queue_command(struct Scsi_Host *shost,
5312 struct scsi_cmnd *scmd)
5313 {
5314 int rc;
5315 struct pqi_ctrl_info *ctrl_info;
5316 struct pqi_scsi_dev *device;
5317 u16 hw_queue;
5318 struct pqi_queue_group *queue_group;
5319 bool raid_bypassed;
5320
5321 device = scmd->device->hostdata;
5322 ctrl_info = shost_to_hba(shost);
5323
5324 if (!device) {
5325 set_host_byte(scmd, DID_NO_CONNECT);
5326 pqi_scsi_done(scmd);
5327 return 0;
5328 }
5329
5330 atomic_inc(&device->scsi_cmds_outstanding);
5331
5332 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(ctrl_info,
5333 device)) {
5334 set_host_byte(scmd, DID_NO_CONNECT);
5335 pqi_scsi_done(scmd);
5336 return 0;
5337 }
5338
5339 pqi_ctrl_busy(ctrl_info);
5340 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) ||
5341 pqi_ctrl_in_ofa(ctrl_info)) {
5342 rc = SCSI_MLQUEUE_HOST_BUSY;
5343 goto out;
5344 }
5345
5346 /*
5347 * This is necessary because the SML doesn't zero out this field during
5348 * error recovery.
5349 */
5350 scmd->result = 0;
5351
5352 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
5353 queue_group = &ctrl_info->queue_groups[hw_queue];
5354
5355 if (pqi_is_logical_device(device)) {
5356 raid_bypassed = false;
5357 if (device->raid_bypass_enabled &&
5358 !blk_rq_is_passthrough(scmd->request)) {
5359 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
5360 scmd, queue_group);
5361 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
5362 raid_bypassed = true;
5363 }
5364 if (!raid_bypassed)
5365 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5366 queue_group);
5367 } else {
5368 if (device->aio_enabled)
5369 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd,
5370 queue_group);
5371 else
5372 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5373 queue_group);
5374 }
5375
5376 out:
5377 pqi_ctrl_unbusy(ctrl_info);
5378 if (rc)
5379 atomic_dec(&device->scsi_cmds_outstanding);
5380
5381 return rc;
5382 }
5383
5384 static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
5385 struct pqi_queue_group *queue_group)
5386 {
5387 unsigned int path;
5388 unsigned long flags;
5389 bool list_is_empty;
5390
5391 for (path = 0; path < 2; path++) {
5392 while (1) {
5393 spin_lock_irqsave(
5394 &queue_group->submit_lock[path], flags);
5395 list_is_empty =
5396 list_empty(&queue_group->request_list[path]);
5397 spin_unlock_irqrestore(
5398 &queue_group->submit_lock[path], flags);
5399 if (list_is_empty)
5400 break;
5401 pqi_check_ctrl_health(ctrl_info);
5402 if (pqi_ctrl_offline(ctrl_info))
5403 return -ENXIO;
5404 usleep_range(1000, 2000);
5405 }
5406 }
5407
5408 return 0;
5409 }
5410
5411 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
5412 {
5413 int rc;
5414 unsigned int i;
5415 unsigned int path;
5416 struct pqi_queue_group *queue_group;
5417 pqi_index_t iq_pi;
5418 pqi_index_t iq_ci;
5419
5420 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5421 queue_group = &ctrl_info->queue_groups[i];
5422
5423 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
5424 if (rc)
5425 return rc;
5426
5427 for (path = 0; path < 2; path++) {
5428 iq_pi = queue_group->iq_pi_copy[path];
5429
5430 while (1) {
5431 iq_ci = readl(queue_group->iq_ci[path]);
5432 if (iq_ci == iq_pi)
5433 break;
5434 pqi_check_ctrl_health(ctrl_info);
5435 if (pqi_ctrl_offline(ctrl_info))
5436 return -ENXIO;
5437 usleep_range(1000, 2000);
5438 }
5439 }
5440 }
5441
5442 return 0;
5443 }
5444
5445 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5446 struct pqi_scsi_dev *device)
5447 {
5448 unsigned int i;
5449 unsigned int path;
5450 struct pqi_queue_group *queue_group;
5451 unsigned long flags;
5452 struct pqi_io_request *io_request;
5453 struct pqi_io_request *next;
5454 struct scsi_cmnd *scmd;
5455 struct pqi_scsi_dev *scsi_device;
5456
5457 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5458 queue_group = &ctrl_info->queue_groups[i];
5459
5460 for (path = 0; path < 2; path++) {
5461 spin_lock_irqsave(
5462 &queue_group->submit_lock[path], flags);
5463
5464 list_for_each_entry_safe(io_request, next,
5465 &queue_group->request_list[path],
5466 request_list_entry) {
5467 scmd = io_request->scmd;
5468 if (!scmd)
5469 continue;
5470
5471 scsi_device = scmd->device->hostdata;
5472 if (scsi_device != device)
5473 continue;
5474
5475 list_del(&io_request->request_list_entry);
5476 set_host_byte(scmd, DID_RESET);
5477 pqi_scsi_done(scmd);
5478 }
5479
5480 spin_unlock_irqrestore(
5481 &queue_group->submit_lock[path], flags);
5482 }
5483 }
5484 }
5485
5486 static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info)
5487 {
5488 unsigned int i;
5489 unsigned int path;
5490 struct pqi_queue_group *queue_group;
5491 unsigned long flags;
5492 struct pqi_io_request *io_request;
5493 struct pqi_io_request *next;
5494 struct scsi_cmnd *scmd;
5495
5496 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5497 queue_group = &ctrl_info->queue_groups[i];
5498
5499 for (path = 0; path < 2; path++) {
5500 spin_lock_irqsave(&queue_group->submit_lock[path],
5501 flags);
5502
5503 list_for_each_entry_safe(io_request, next,
5504 &queue_group->request_list[path],
5505 request_list_entry) {
5506
5507 scmd = io_request->scmd;
5508 if (!scmd)
5509 continue;
5510
5511 list_del(&io_request->request_list_entry);
5512 set_host_byte(scmd, DID_RESET);
5513 pqi_scsi_done(scmd);
5514 }
5515
5516 spin_unlock_irqrestore(
5517 &queue_group->submit_lock[path], flags);
5518 }
5519 }
5520 }
5521
5522 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5523 struct pqi_scsi_dev *device, unsigned long timeout_secs)
5524 {
5525 unsigned long timeout;
5526
5527 timeout = (timeout_secs * PQI_HZ) + jiffies;
5528
5529 while (atomic_read(&device->scsi_cmds_outstanding)) {
5530 pqi_check_ctrl_health(ctrl_info);
5531 if (pqi_ctrl_offline(ctrl_info))
5532 return -ENXIO;
5533 if (timeout_secs != NO_TIMEOUT) {
5534 if (time_after(jiffies, timeout)) {
5535 dev_err(&ctrl_info->pci_dev->dev,
5536 "timed out waiting for pending IO\n");
5537 return -ETIMEDOUT;
5538 }
5539 }
5540 usleep_range(1000, 2000);
5541 }
5542
5543 return 0;
5544 }
5545
5546 static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5547 unsigned long timeout_secs)
5548 {
5549 bool io_pending;
5550 unsigned long flags;
5551 unsigned long timeout;
5552 struct pqi_scsi_dev *device;
5553
5554 timeout = (timeout_secs * PQI_HZ) + jiffies;
5555 while (1) {
5556 io_pending = false;
5557
5558 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5559 list_for_each_entry(device, &ctrl_info->scsi_device_list,
5560 scsi_device_list_entry) {
5561 if (atomic_read(&device->scsi_cmds_outstanding)) {
5562 io_pending = true;
5563 break;
5564 }
5565 }
5566 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5567 flags);
5568
5569 if (!io_pending)
5570 break;
5571
5572 pqi_check_ctrl_health(ctrl_info);
5573 if (pqi_ctrl_offline(ctrl_info))
5574 return -ENXIO;
5575
5576 if (timeout_secs != NO_TIMEOUT) {
5577 if (time_after(jiffies, timeout)) {
5578 dev_err(&ctrl_info->pci_dev->dev,
5579 "timed out waiting for pending IO\n");
5580 return -ETIMEDOUT;
5581 }
5582 }
5583 usleep_range(1000, 2000);
5584 }
5585
5586 return 0;
5587 }
5588
5589 static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
5590 void *context)
5591 {
5592 struct completion *waiting = context;
5593
5594 complete(waiting);
5595 }
5596
5597 #define PQI_LUN_RESET_TIMEOUT_SECS 10
5598
5599 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
5600 struct pqi_scsi_dev *device, struct completion *wait)
5601 {
5602 int rc;
5603
5604 while (1) {
5605 if (wait_for_completion_io_timeout(wait,
5606 PQI_LUN_RESET_TIMEOUT_SECS * PQI_HZ)) {
5607 rc = 0;
5608 break;
5609 }
5610
5611 pqi_check_ctrl_health(ctrl_info);
5612 if (pqi_ctrl_offline(ctrl_info)) {
5613 rc = -ENXIO;
5614 break;
5615 }
5616 }
5617
5618 return rc;
5619 }
5620
5621 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
5622 struct pqi_scsi_dev *device)
5623 {
5624 int rc;
5625 struct pqi_io_request *io_request;
5626 DECLARE_COMPLETION_ONSTACK(wait);
5627 struct pqi_task_management_request *request;
5628
5629 io_request = pqi_alloc_io_request(ctrl_info);
5630 io_request->io_complete_callback = pqi_lun_reset_complete;
5631 io_request->context = &wait;
5632
5633 request = io_request->iu;
5634 memset(request, 0, sizeof(*request));
5635
5636 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
5637 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
5638 &request->header.iu_length);
5639 put_unaligned_le16(io_request->index, &request->request_id);
5640 memcpy(request->lun_number, device->scsi3addr,
5641 sizeof(request->lun_number));
5642 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
5643
5644 pqi_start_io(ctrl_info,
5645 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
5646 io_request);
5647
5648 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
5649 if (rc == 0)
5650 rc = io_request->status;
5651
5652 pqi_free_io_request(io_request);
5653
5654 return rc;
5655 }
5656
5657 #define PQI_LUN_RESET_RETRIES 3
5658 #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000
5659 /* Performs a reset at the LUN level. */
5660
5661 static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5662 struct pqi_scsi_dev *device)
5663 {
5664 int rc;
5665 unsigned int retries;
5666 unsigned long timeout_secs;
5667
5668 for (retries = 0;;) {
5669 rc = pqi_lun_reset(ctrl_info, device);
5670 if (rc != -EAGAIN ||
5671 ++retries > PQI_LUN_RESET_RETRIES)
5672 break;
5673 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
5674 }
5675 timeout_secs = rc ? PQI_LUN_RESET_TIMEOUT_SECS : NO_TIMEOUT;
5676
5677 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs);
5678
5679 return rc == 0 ? SUCCESS : FAILED;
5680 }
5681
5682 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5683 struct pqi_scsi_dev *device)
5684 {
5685 int rc;
5686
5687 mutex_lock(&ctrl_info->lun_reset_mutex);
5688
5689 pqi_ctrl_block_requests(ctrl_info);
5690 pqi_ctrl_wait_until_quiesced(ctrl_info);
5691 pqi_fail_io_queued_for_device(ctrl_info, device);
5692 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
5693 pqi_device_reset_start(device);
5694 pqi_ctrl_unblock_requests(ctrl_info);
5695
5696 if (rc)
5697 rc = FAILED;
5698 else
5699 rc = _pqi_device_reset(ctrl_info, device);
5700
5701 pqi_device_reset_done(device);
5702
5703 mutex_unlock(&ctrl_info->lun_reset_mutex);
5704 return rc;
5705 }
5706
5707 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
5708 {
5709 int rc;
5710 struct Scsi_Host *shost;
5711 struct pqi_ctrl_info *ctrl_info;
5712 struct pqi_scsi_dev *device;
5713
5714 shost = scmd->device->host;
5715 ctrl_info = shost_to_hba(shost);
5716 device = scmd->device->hostdata;
5717
5718 dev_err(&ctrl_info->pci_dev->dev,
5719 "resetting scsi %d:%d:%d:%d\n",
5720 shost->host_no, device->bus, device->target, device->lun);
5721
5722 pqi_check_ctrl_health(ctrl_info);
5723 if (pqi_ctrl_offline(ctrl_info)) {
5724 dev_err(&ctrl_info->pci_dev->dev,
5725 "controller %u offlined - cannot send device reset\n",
5726 ctrl_info->ctrl_id);
5727 rc = FAILED;
5728 goto out;
5729 }
5730
5731 pqi_wait_until_ofa_finished(ctrl_info);
5732
5733 rc = pqi_device_reset(ctrl_info, device);
5734 out:
5735 dev_err(&ctrl_info->pci_dev->dev,
5736 "reset of scsi %d:%d:%d:%d: %s\n",
5737 shost->host_no, device->bus, device->target, device->lun,
5738 rc == SUCCESS ? "SUCCESS" : "FAILED");
5739
5740 return rc;
5741 }
5742
5743 static int pqi_slave_alloc(struct scsi_device *sdev)
5744 {
5745 struct pqi_scsi_dev *device;
5746 unsigned long flags;
5747 struct pqi_ctrl_info *ctrl_info;
5748 struct scsi_target *starget;
5749 struct sas_rphy *rphy;
5750
5751 ctrl_info = shost_to_hba(sdev->host);
5752
5753 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5754
5755 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
5756 starget = scsi_target(sdev);
5757 rphy = target_to_rphy(starget);
5758 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
5759 if (device) {
5760 device->target = sdev_id(sdev);
5761 device->lun = sdev->lun;
5762 device->target_lun_valid = true;
5763 }
5764 } else {
5765 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
5766 sdev_id(sdev), sdev->lun);
5767 }
5768
5769 if (device) {
5770 sdev->hostdata = device;
5771 device->sdev = sdev;
5772 if (device->queue_depth) {
5773 device->advertised_queue_depth = device->queue_depth;
5774 scsi_change_queue_depth(sdev,
5775 device->advertised_queue_depth);
5776 }
5777 if (pqi_is_logical_device(device))
5778 pqi_disable_write_same(sdev);
5779 else
5780 sdev->allow_restart = 1;
5781 }
5782
5783 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5784
5785 return 0;
5786 }
5787
5788 static int pqi_map_queues(struct Scsi_Host *shost)
5789 {
5790 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
5791
5792 return blk_mq_pci_map_queues(&shost->tag_set.map[0],
5793 ctrl_info->pci_dev, 0);
5794 }
5795
5796 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
5797 void __user *arg)
5798 {
5799 struct pci_dev *pci_dev;
5800 u32 subsystem_vendor;
5801 u32 subsystem_device;
5802 cciss_pci_info_struct pciinfo;
5803
5804 if (!arg)
5805 return -EINVAL;
5806
5807 pci_dev = ctrl_info->pci_dev;
5808
5809 pciinfo.domain = pci_domain_nr(pci_dev->bus);
5810 pciinfo.bus = pci_dev->bus->number;
5811 pciinfo.dev_fn = pci_dev->devfn;
5812 subsystem_vendor = pci_dev->subsystem_vendor;
5813 subsystem_device = pci_dev->subsystem_device;
5814 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) |
5815 subsystem_vendor;
5816
5817 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
5818 return -EFAULT;
5819
5820 return 0;
5821 }
5822
5823 static int pqi_getdrivver_ioctl(void __user *arg)
5824 {
5825 u32 version;
5826
5827 if (!arg)
5828 return -EINVAL;
5829
5830 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
5831 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
5832
5833 if (copy_to_user(arg, &version, sizeof(version)))
5834 return -EFAULT;
5835
5836 return 0;
5837 }
5838
5839 struct ciss_error_info {
5840 u8 scsi_status;
5841 int command_status;
5842 size_t sense_data_length;
5843 };
5844
5845 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
5846 struct ciss_error_info *ciss_error_info)
5847 {
5848 int ciss_cmd_status;
5849 size_t sense_data_length;
5850
5851 switch (pqi_error_info->data_out_result) {
5852 case PQI_DATA_IN_OUT_GOOD:
5853 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
5854 break;
5855 case PQI_DATA_IN_OUT_UNDERFLOW:
5856 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
5857 break;
5858 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
5859 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
5860 break;
5861 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
5862 case PQI_DATA_IN_OUT_BUFFER_ERROR:
5863 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
5864 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
5865 case PQI_DATA_IN_OUT_ERROR:
5866 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
5867 break;
5868 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
5869 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
5870 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
5871 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
5872 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
5873 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
5874 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
5875 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
5876 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
5877 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
5878 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
5879 break;
5880 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
5881 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
5882 break;
5883 case PQI_DATA_IN_OUT_ABORTED:
5884 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
5885 break;
5886 case PQI_DATA_IN_OUT_TIMEOUT:
5887 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
5888 break;
5889 default:
5890 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
5891 break;
5892 }
5893
5894 sense_data_length =
5895 get_unaligned_le16(&pqi_error_info->sense_data_length);
5896 if (sense_data_length == 0)
5897 sense_data_length =
5898 get_unaligned_le16(&pqi_error_info->response_data_length);
5899 if (sense_data_length)
5900 if (sense_data_length > sizeof(pqi_error_info->data))
5901 sense_data_length = sizeof(pqi_error_info->data);
5902
5903 ciss_error_info->scsi_status = pqi_error_info->status;
5904 ciss_error_info->command_status = ciss_cmd_status;
5905 ciss_error_info->sense_data_length = sense_data_length;
5906 }
5907
5908 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
5909 {
5910 int rc;
5911 char *kernel_buffer = NULL;
5912 u16 iu_length;
5913 size_t sense_data_length;
5914 IOCTL_Command_struct iocommand;
5915 struct pqi_raid_path_request request;
5916 struct pqi_raid_error_info pqi_error_info;
5917 struct ciss_error_info ciss_error_info;
5918
5919 if (pqi_ctrl_offline(ctrl_info))
5920 return -ENXIO;
5921 if (!arg)
5922 return -EINVAL;
5923 if (!capable(CAP_SYS_RAWIO))
5924 return -EPERM;
5925 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
5926 return -EFAULT;
5927 if (iocommand.buf_size < 1 &&
5928 iocommand.Request.Type.Direction != XFER_NONE)
5929 return -EINVAL;
5930 if (iocommand.Request.CDBLen > sizeof(request.cdb))
5931 return -EINVAL;
5932 if (iocommand.Request.Type.Type != TYPE_CMD)
5933 return -EINVAL;
5934
5935 switch (iocommand.Request.Type.Direction) {
5936 case XFER_NONE:
5937 case XFER_WRITE:
5938 case XFER_READ:
5939 case XFER_READ | XFER_WRITE:
5940 break;
5941 default:
5942 return -EINVAL;
5943 }
5944
5945 if (iocommand.buf_size > 0) {
5946 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
5947 if (!kernel_buffer)
5948 return -ENOMEM;
5949 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5950 if (copy_from_user(kernel_buffer, iocommand.buf,
5951 iocommand.buf_size)) {
5952 rc = -EFAULT;
5953 goto out;
5954 }
5955 } else {
5956 memset(kernel_buffer, 0, iocommand.buf_size);
5957 }
5958 }
5959
5960 memset(&request, 0, sizeof(request));
5961
5962 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
5963 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
5964 PQI_REQUEST_HEADER_LENGTH;
5965 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
5966 sizeof(request.lun_number));
5967 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
5968 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
5969
5970 switch (iocommand.Request.Type.Direction) {
5971 case XFER_NONE:
5972 request.data_direction = SOP_NO_DIRECTION_FLAG;
5973 break;
5974 case XFER_WRITE:
5975 request.data_direction = SOP_WRITE_FLAG;
5976 break;
5977 case XFER_READ:
5978 request.data_direction = SOP_READ_FLAG;
5979 break;
5980 case XFER_READ | XFER_WRITE:
5981 request.data_direction = SOP_BIDIRECTIONAL;
5982 break;
5983 }
5984
5985 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5986
5987 if (iocommand.buf_size > 0) {
5988 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
5989
5990 rc = pqi_map_single(ctrl_info->pci_dev,
5991 &request.sg_descriptors[0], kernel_buffer,
5992 iocommand.buf_size, DMA_BIDIRECTIONAL);
5993 if (rc)
5994 goto out;
5995
5996 iu_length += sizeof(request.sg_descriptors[0]);
5997 }
5998
5999 put_unaligned_le16(iu_length, &request.header.iu_length);
6000
6001 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6002 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
6003
6004 if (iocommand.buf_size > 0)
6005 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
6006 DMA_BIDIRECTIONAL);
6007
6008 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
6009
6010 if (rc == 0) {
6011 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
6012 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
6013 iocommand.error_info.CommandStatus =
6014 ciss_error_info.command_status;
6015 sense_data_length = ciss_error_info.sense_data_length;
6016 if (sense_data_length) {
6017 if (sense_data_length >
6018 sizeof(iocommand.error_info.SenseInfo))
6019 sense_data_length =
6020 sizeof(iocommand.error_info.SenseInfo);
6021 memcpy(iocommand.error_info.SenseInfo,
6022 pqi_error_info.data, sense_data_length);
6023 iocommand.error_info.SenseLen = sense_data_length;
6024 }
6025 }
6026
6027 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
6028 rc = -EFAULT;
6029 goto out;
6030 }
6031
6032 if (rc == 0 && iocommand.buf_size > 0 &&
6033 (iocommand.Request.Type.Direction & XFER_READ)) {
6034 if (copy_to_user(iocommand.buf, kernel_buffer,
6035 iocommand.buf_size)) {
6036 rc = -EFAULT;
6037 }
6038 }
6039
6040 out:
6041 kfree(kernel_buffer);
6042
6043 return rc;
6044 }
6045
6046 static int pqi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6047 {
6048 int rc;
6049 struct pqi_ctrl_info *ctrl_info;
6050
6051 ctrl_info = shost_to_hba(sdev->host);
6052
6053 if (pqi_ctrl_in_ofa(ctrl_info))
6054 return -EBUSY;
6055
6056 switch (cmd) {
6057 case CCISS_DEREGDISK:
6058 case CCISS_REGNEWDISK:
6059 case CCISS_REGNEWD:
6060 rc = pqi_scan_scsi_devices(ctrl_info);
6061 break;
6062 case CCISS_GETPCIINFO:
6063 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
6064 break;
6065 case CCISS_GETDRIVVER:
6066 rc = pqi_getdrivver_ioctl(arg);
6067 break;
6068 case CCISS_PASSTHRU:
6069 rc = pqi_passthru_ioctl(ctrl_info, arg);
6070 break;
6071 default:
6072 rc = -EINVAL;
6073 break;
6074 }
6075
6076 return rc;
6077 }
6078
6079 static ssize_t pqi_version_show(struct device *dev,
6080 struct device_attribute *attr, char *buffer)
6081 {
6082 ssize_t count = 0;
6083 struct Scsi_Host *shost;
6084 struct pqi_ctrl_info *ctrl_info;
6085
6086 shost = class_to_shost(dev);
6087 ctrl_info = shost_to_hba(shost);
6088
6089 count += snprintf(buffer + count, PAGE_SIZE - count,
6090 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP);
6091
6092 count += snprintf(buffer + count, PAGE_SIZE - count,
6093 "firmware: %s\n", ctrl_info->firmware_version);
6094
6095 return count;
6096 }
6097
6098 static ssize_t pqi_host_rescan_store(struct device *dev,
6099 struct device_attribute *attr, const char *buffer, size_t count)
6100 {
6101 struct Scsi_Host *shost = class_to_shost(dev);
6102
6103 pqi_scan_start(shost);
6104
6105 return count;
6106 }
6107
6108 static ssize_t pqi_lockup_action_show(struct device *dev,
6109 struct device_attribute *attr, char *buffer)
6110 {
6111 int count = 0;
6112 unsigned int i;
6113
6114 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6115 if (pqi_lockup_actions[i].action == pqi_lockup_action)
6116 count += snprintf(buffer + count, PAGE_SIZE - count,
6117 "[%s] ", pqi_lockup_actions[i].name);
6118 else
6119 count += snprintf(buffer + count, PAGE_SIZE - count,
6120 "%s ", pqi_lockup_actions[i].name);
6121 }
6122
6123 count += snprintf(buffer + count, PAGE_SIZE - count, "\n");
6124
6125 return count;
6126 }
6127
6128 static ssize_t pqi_lockup_action_store(struct device *dev,
6129 struct device_attribute *attr, const char *buffer, size_t count)
6130 {
6131 unsigned int i;
6132 char *action_name;
6133 char action_name_buffer[32];
6134
6135 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
6136 action_name = strstrip(action_name_buffer);
6137
6138 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6139 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
6140 pqi_lockup_action = pqi_lockup_actions[i].action;
6141 return count;
6142 }
6143 }
6144
6145 return -EINVAL;
6146 }
6147
6148 static DEVICE_ATTR(version, 0444, pqi_version_show, NULL);
6149 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
6150 static DEVICE_ATTR(lockup_action, 0644,
6151 pqi_lockup_action_show, pqi_lockup_action_store);
6152
6153 static struct device_attribute *pqi_shost_attrs[] = {
6154 &dev_attr_version,
6155 &dev_attr_rescan,
6156 &dev_attr_lockup_action,
6157 NULL
6158 };
6159
6160 static ssize_t pqi_unique_id_show(struct device *dev,
6161 struct device_attribute *attr, char *buffer)
6162 {
6163 struct pqi_ctrl_info *ctrl_info;
6164 struct scsi_device *sdev;
6165 struct pqi_scsi_dev *device;
6166 unsigned long flags;
6167 unsigned char uid[16];
6168
6169 sdev = to_scsi_device(dev);
6170 ctrl_info = shost_to_hba(sdev->host);
6171
6172 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6173
6174 device = sdev->hostdata;
6175 if (!device) {
6176 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6177 flags);
6178 return -ENODEV;
6179 }
6180 memcpy(uid, device->unique_id, sizeof(uid));
6181
6182 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6183
6184 return snprintf(buffer, PAGE_SIZE,
6185 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n",
6186 uid[0], uid[1], uid[2], uid[3],
6187 uid[4], uid[5], uid[6], uid[7],
6188 uid[8], uid[9], uid[10], uid[11],
6189 uid[12], uid[13], uid[14], uid[15]);
6190 }
6191
6192 static ssize_t pqi_lunid_show(struct device *dev,
6193 struct device_attribute *attr, char *buffer)
6194 {
6195 struct pqi_ctrl_info *ctrl_info;
6196 struct scsi_device *sdev;
6197 struct pqi_scsi_dev *device;
6198 unsigned long flags;
6199 u8 lunid[8];
6200
6201 sdev = to_scsi_device(dev);
6202 ctrl_info = shost_to_hba(sdev->host);
6203
6204 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6205
6206 device = sdev->hostdata;
6207 if (!device) {
6208 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6209 flags);
6210 return -ENODEV;
6211 }
6212 memcpy(lunid, device->scsi3addr, sizeof(lunid));
6213
6214 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6215
6216 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
6217 }
6218
6219 #define MAX_PATHS 8
6220 static ssize_t pqi_path_info_show(struct device *dev,
6221 struct device_attribute *attr, char *buf)
6222 {
6223 struct pqi_ctrl_info *ctrl_info;
6224 struct scsi_device *sdev;
6225 struct pqi_scsi_dev *device;
6226 unsigned long flags;
6227 int i;
6228 int output_len = 0;
6229 u8 box;
6230 u8 bay;
6231 u8 path_map_index = 0;
6232 char *active;
6233 unsigned char phys_connector[2];
6234
6235 sdev = to_scsi_device(dev);
6236 ctrl_info = shost_to_hba(sdev->host);
6237
6238 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6239
6240 device = sdev->hostdata;
6241 if (!device) {
6242 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6243 flags);
6244 return -ENODEV;
6245 }
6246
6247 bay = device->bay;
6248 for (i = 0; i < MAX_PATHS; i++) {
6249 path_map_index = 1<<i;
6250 if (i == device->active_path_index)
6251 active = "Active";
6252 else if (device->path_map & path_map_index)
6253 active = "Inactive";
6254 else
6255 continue;
6256
6257 output_len += scnprintf(buf + output_len,
6258 PAGE_SIZE - output_len,
6259 "[%d:%d:%d:%d] %20.20s ",
6260 ctrl_info->scsi_host->host_no,
6261 device->bus, device->target,
6262 device->lun,
6263 scsi_device_type(device->devtype));
6264
6265 if (device->devtype == TYPE_RAID ||
6266 pqi_is_logical_device(device))
6267 goto end_buffer;
6268
6269 memcpy(&phys_connector, &device->phys_connector[i],
6270 sizeof(phys_connector));
6271 if (phys_connector[0] < '0')
6272 phys_connector[0] = '0';
6273 if (phys_connector[1] < '0')
6274 phys_connector[1] = '0';
6275
6276 output_len += scnprintf(buf + output_len,
6277 PAGE_SIZE - output_len,
6278 "PORT: %.2s ", phys_connector);
6279
6280 box = device->box[i];
6281 if (box != 0 && box != 0xFF)
6282 output_len += scnprintf(buf + output_len,
6283 PAGE_SIZE - output_len,
6284 "BOX: %hhu ", box);
6285
6286 if ((device->devtype == TYPE_DISK ||
6287 device->devtype == TYPE_ZBC) &&
6288 pqi_expose_device(device))
6289 output_len += scnprintf(buf + output_len,
6290 PAGE_SIZE - output_len,
6291 "BAY: %hhu ", bay);
6292
6293 end_buffer:
6294 output_len += scnprintf(buf + output_len,
6295 PAGE_SIZE - output_len,
6296 "%s\n", active);
6297 }
6298
6299 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6300 return output_len;
6301 }
6302
6303
6304 static ssize_t pqi_sas_address_show(struct device *dev,
6305 struct device_attribute *attr, char *buffer)
6306 {
6307 struct pqi_ctrl_info *ctrl_info;
6308 struct scsi_device *sdev;
6309 struct pqi_scsi_dev *device;
6310 unsigned long flags;
6311 u64 sas_address;
6312
6313 sdev = to_scsi_device(dev);
6314 ctrl_info = shost_to_hba(sdev->host);
6315
6316 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6317
6318 device = sdev->hostdata;
6319 if (pqi_is_logical_device(device)) {
6320 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6321 flags);
6322 return -ENODEV;
6323 }
6324 sas_address = device->sas_address;
6325
6326 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6327
6328 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
6329 }
6330
6331 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
6332 struct device_attribute *attr, char *buffer)
6333 {
6334 struct pqi_ctrl_info *ctrl_info;
6335 struct scsi_device *sdev;
6336 struct pqi_scsi_dev *device;
6337 unsigned long flags;
6338
6339 sdev = to_scsi_device(dev);
6340 ctrl_info = shost_to_hba(sdev->host);
6341
6342 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6343
6344 device = sdev->hostdata;
6345 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
6346 buffer[1] = '\n';
6347 buffer[2] = '\0';
6348
6349 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6350
6351 return 2;
6352 }
6353
6354 static ssize_t pqi_raid_level_show(struct device *dev,
6355 struct device_attribute *attr, char *buffer)
6356 {
6357 struct pqi_ctrl_info *ctrl_info;
6358 struct scsi_device *sdev;
6359 struct pqi_scsi_dev *device;
6360 unsigned long flags;
6361 char *raid_level;
6362
6363 sdev = to_scsi_device(dev);
6364 ctrl_info = shost_to_hba(sdev->host);
6365
6366 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6367
6368 device = sdev->hostdata;
6369
6370 if (pqi_is_logical_device(device))
6371 raid_level = pqi_raid_level_to_string(device->raid_level);
6372 else
6373 raid_level = "N/A";
6374
6375 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6376
6377 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
6378 }
6379
6380 static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
6381 static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
6382 static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
6383 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
6384 static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
6385 pqi_ssd_smart_path_enabled_show, NULL);
6386 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
6387
6388 static struct device_attribute *pqi_sdev_attrs[] = {
6389 &dev_attr_lunid,
6390 &dev_attr_unique_id,
6391 &dev_attr_path_info,
6392 &dev_attr_sas_address,
6393 &dev_attr_ssd_smart_path_enabled,
6394 &dev_attr_raid_level,
6395 NULL
6396 };
6397
6398 static struct scsi_host_template pqi_driver_template = {
6399 .module = THIS_MODULE,
6400 .name = DRIVER_NAME_SHORT,
6401 .proc_name = DRIVER_NAME_SHORT,
6402 .queuecommand = pqi_scsi_queue_command,
6403 .scan_start = pqi_scan_start,
6404 .scan_finished = pqi_scan_finished,
6405 .this_id = -1,
6406 .eh_device_reset_handler = pqi_eh_device_reset_handler,
6407 .ioctl = pqi_ioctl,
6408 .slave_alloc = pqi_slave_alloc,
6409 .map_queues = pqi_map_queues,
6410 .sdev_attrs = pqi_sdev_attrs,
6411 .shost_attrs = pqi_shost_attrs,
6412 };
6413
6414 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
6415 {
6416 int rc;
6417 struct Scsi_Host *shost;
6418
6419 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
6420 if (!shost) {
6421 dev_err(&ctrl_info->pci_dev->dev,
6422 "scsi_host_alloc failed for controller %u\n",
6423 ctrl_info->ctrl_id);
6424 return -ENOMEM;
6425 }
6426
6427 shost->io_port = 0;
6428 shost->n_io_port = 0;
6429 shost->this_id = -1;
6430 shost->max_channel = PQI_MAX_BUS;
6431 shost->max_cmd_len = MAX_COMMAND_SIZE;
6432 shost->max_lun = ~0;
6433 shost->max_id = ~0;
6434 shost->max_sectors = ctrl_info->max_sectors;
6435 shost->can_queue = ctrl_info->scsi_ml_can_queue;
6436 shost->cmd_per_lun = shost->can_queue;
6437 shost->sg_tablesize = ctrl_info->sg_tablesize;
6438 shost->transportt = pqi_sas_transport_template;
6439 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
6440 shost->unique_id = shost->irq;
6441 shost->nr_hw_queues = ctrl_info->num_queue_groups;
6442 shost->hostdata[0] = (unsigned long)ctrl_info;
6443
6444 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
6445 if (rc) {
6446 dev_err(&ctrl_info->pci_dev->dev,
6447 "scsi_add_host failed for controller %u\n",
6448 ctrl_info->ctrl_id);
6449 goto free_host;
6450 }
6451
6452 rc = pqi_add_sas_host(shost, ctrl_info);
6453 if (rc) {
6454 dev_err(&ctrl_info->pci_dev->dev,
6455 "add SAS host failed for controller %u\n",
6456 ctrl_info->ctrl_id);
6457 goto remove_host;
6458 }
6459
6460 ctrl_info->scsi_host = shost;
6461
6462 return 0;
6463
6464 remove_host:
6465 scsi_remove_host(shost);
6466 free_host:
6467 scsi_host_put(shost);
6468
6469 return rc;
6470 }
6471
6472 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
6473 {
6474 struct Scsi_Host *shost;
6475
6476 pqi_delete_sas_host(ctrl_info);
6477
6478 shost = ctrl_info->scsi_host;
6479 if (!shost)
6480 return;
6481
6482 scsi_remove_host(shost);
6483 scsi_host_put(shost);
6484 }
6485
6486 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
6487 {
6488 int rc = 0;
6489 struct pqi_device_registers __iomem *pqi_registers;
6490 unsigned long timeout;
6491 unsigned int timeout_msecs;
6492 union pqi_reset_register reset_reg;
6493
6494 pqi_registers = ctrl_info->pqi_registers;
6495 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
6496 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
6497
6498 while (1) {
6499 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
6500 reset_reg.all_bits = readl(&pqi_registers->device_reset);
6501 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
6502 break;
6503 pqi_check_ctrl_health(ctrl_info);
6504 if (pqi_ctrl_offline(ctrl_info)) {
6505 rc = -ENXIO;
6506 break;
6507 }
6508 if (time_after(jiffies, timeout)) {
6509 rc = -ETIMEDOUT;
6510 break;
6511 }
6512 }
6513
6514 return rc;
6515 }
6516
6517 static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
6518 {
6519 int rc;
6520 union pqi_reset_register reset_reg;
6521
6522 if (ctrl_info->pqi_reset_quiesce_supported) {
6523 rc = sis_pqi_reset_quiesce(ctrl_info);
6524 if (rc) {
6525 dev_err(&ctrl_info->pci_dev->dev,
6526 "PQI reset failed during quiesce with error %d\n",
6527 rc);
6528 return rc;
6529 }
6530 }
6531
6532 reset_reg.all_bits = 0;
6533 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
6534 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
6535
6536 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
6537
6538 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
6539 if (rc)
6540 dev_err(&ctrl_info->pci_dev->dev,
6541 "PQI reset failed with error %d\n", rc);
6542
6543 return rc;
6544 }
6545
6546 static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info)
6547 {
6548 int rc;
6549 struct bmic_identify_controller *identify;
6550
6551 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
6552 if (!identify)
6553 return -ENOMEM;
6554
6555 rc = pqi_identify_controller(ctrl_info, identify);
6556 if (rc)
6557 goto out;
6558
6559 memcpy(ctrl_info->firmware_version, identify->firmware_version,
6560 sizeof(identify->firmware_version));
6561 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
6562 snprintf(ctrl_info->firmware_version +
6563 strlen(ctrl_info->firmware_version),
6564 sizeof(ctrl_info->firmware_version),
6565 "-%u", get_unaligned_le16(&identify->firmware_build_number));
6566
6567 out:
6568 kfree(identify);
6569
6570 return rc;
6571 }
6572
6573 struct pqi_config_table_section_info {
6574 struct pqi_ctrl_info *ctrl_info;
6575 void *section;
6576 u32 section_offset;
6577 void __iomem *section_iomem_addr;
6578 };
6579
6580 static inline bool pqi_is_firmware_feature_supported(
6581 struct pqi_config_table_firmware_features *firmware_features,
6582 unsigned int bit_position)
6583 {
6584 unsigned int byte_index;
6585
6586 byte_index = bit_position / BITS_PER_BYTE;
6587
6588 if (byte_index >= le16_to_cpu(firmware_features->num_elements))
6589 return false;
6590
6591 return firmware_features->features_supported[byte_index] &
6592 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6593 }
6594
6595 static inline bool pqi_is_firmware_feature_enabled(
6596 struct pqi_config_table_firmware_features *firmware_features,
6597 void __iomem *firmware_features_iomem_addr,
6598 unsigned int bit_position)
6599 {
6600 unsigned int byte_index;
6601 u8 __iomem *features_enabled_iomem_addr;
6602
6603 byte_index = (bit_position / BITS_PER_BYTE) +
6604 (le16_to_cpu(firmware_features->num_elements) * 2);
6605
6606 features_enabled_iomem_addr = firmware_features_iomem_addr +
6607 offsetof(struct pqi_config_table_firmware_features,
6608 features_supported) + byte_index;
6609
6610 return *((__force u8 *)features_enabled_iomem_addr) &
6611 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6612 }
6613
6614 static inline void pqi_request_firmware_feature(
6615 struct pqi_config_table_firmware_features *firmware_features,
6616 unsigned int bit_position)
6617 {
6618 unsigned int byte_index;
6619
6620 byte_index = (bit_position / BITS_PER_BYTE) +
6621 le16_to_cpu(firmware_features->num_elements);
6622
6623 firmware_features->features_supported[byte_index] |=
6624 (1 << (bit_position % BITS_PER_BYTE));
6625 }
6626
6627 static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info,
6628 u16 first_section, u16 last_section)
6629 {
6630 struct pqi_vendor_general_request request;
6631
6632 memset(&request, 0, sizeof(request));
6633
6634 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
6635 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
6636 &request.header.iu_length);
6637 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE,
6638 &request.function_code);
6639 put_unaligned_le16(first_section,
6640 &request.data.config_table_update.first_section);
6641 put_unaligned_le16(last_section,
6642 &request.data.config_table_update.last_section);
6643
6644 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6645 0, NULL, NO_TIMEOUT);
6646 }
6647
6648 static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info,
6649 struct pqi_config_table_firmware_features *firmware_features,
6650 void __iomem *firmware_features_iomem_addr)
6651 {
6652 void *features_requested;
6653 void __iomem *features_requested_iomem_addr;
6654
6655 features_requested = firmware_features->features_supported +
6656 le16_to_cpu(firmware_features->num_elements);
6657
6658 features_requested_iomem_addr = firmware_features_iomem_addr +
6659 (features_requested - (void *)firmware_features);
6660
6661 memcpy_toio(features_requested_iomem_addr, features_requested,
6662 le16_to_cpu(firmware_features->num_elements));
6663
6664 return pqi_config_table_update(ctrl_info,
6665 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES,
6666 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES);
6667 }
6668
6669 struct pqi_firmware_feature {
6670 char *feature_name;
6671 unsigned int feature_bit;
6672 bool supported;
6673 bool enabled;
6674 void (*feature_status)(struct pqi_ctrl_info *ctrl_info,
6675 struct pqi_firmware_feature *firmware_feature);
6676 };
6677
6678 static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info,
6679 struct pqi_firmware_feature *firmware_feature)
6680 {
6681 if (!firmware_feature->supported) {
6682 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n",
6683 firmware_feature->feature_name);
6684 return;
6685 }
6686
6687 if (firmware_feature->enabled) {
6688 dev_info(&ctrl_info->pci_dev->dev,
6689 "%s enabled\n", firmware_feature->feature_name);
6690 return;
6691 }
6692
6693 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n",
6694 firmware_feature->feature_name);
6695 }
6696
6697 static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info,
6698 struct pqi_firmware_feature *firmware_feature)
6699 {
6700 if (firmware_feature->feature_status)
6701 firmware_feature->feature_status(ctrl_info, firmware_feature);
6702 }
6703
6704 static DEFINE_MUTEX(pqi_firmware_features_mutex);
6705
6706 static struct pqi_firmware_feature pqi_firmware_features[] = {
6707 {
6708 .feature_name = "Online Firmware Activation",
6709 .feature_bit = PQI_FIRMWARE_FEATURE_OFA,
6710 .feature_status = pqi_firmware_feature_status,
6711 },
6712 {
6713 .feature_name = "Serial Management Protocol",
6714 .feature_bit = PQI_FIRMWARE_FEATURE_SMP,
6715 .feature_status = pqi_firmware_feature_status,
6716 },
6717 {
6718 .feature_name = "New Soft Reset Handshake",
6719 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE,
6720 .feature_status = pqi_firmware_feature_status,
6721 },
6722 };
6723
6724 static void pqi_process_firmware_features(
6725 struct pqi_config_table_section_info *section_info)
6726 {
6727 int rc;
6728 struct pqi_ctrl_info *ctrl_info;
6729 struct pqi_config_table_firmware_features *firmware_features;
6730 void __iomem *firmware_features_iomem_addr;
6731 unsigned int i;
6732 unsigned int num_features_supported;
6733
6734 ctrl_info = section_info->ctrl_info;
6735 firmware_features = section_info->section;
6736 firmware_features_iomem_addr = section_info->section_iomem_addr;
6737
6738 for (i = 0, num_features_supported = 0;
6739 i < ARRAY_SIZE(pqi_firmware_features); i++) {
6740 if (pqi_is_firmware_feature_supported(firmware_features,
6741 pqi_firmware_features[i].feature_bit)) {
6742 pqi_firmware_features[i].supported = true;
6743 num_features_supported++;
6744 } else {
6745 pqi_firmware_feature_update(ctrl_info,
6746 &pqi_firmware_features[i]);
6747 }
6748 }
6749
6750 if (num_features_supported == 0)
6751 return;
6752
6753 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6754 if (!pqi_firmware_features[i].supported)
6755 continue;
6756 pqi_request_firmware_feature(firmware_features,
6757 pqi_firmware_features[i].feature_bit);
6758 }
6759
6760 rc = pqi_enable_firmware_features(ctrl_info, firmware_features,
6761 firmware_features_iomem_addr);
6762 if (rc) {
6763 dev_err(&ctrl_info->pci_dev->dev,
6764 "failed to enable firmware features in PQI configuration table\n");
6765 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6766 if (!pqi_firmware_features[i].supported)
6767 continue;
6768 pqi_firmware_feature_update(ctrl_info,
6769 &pqi_firmware_features[i]);
6770 }
6771 return;
6772 }
6773
6774 ctrl_info->soft_reset_handshake_supported = false;
6775 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6776 if (!pqi_firmware_features[i].supported)
6777 continue;
6778 if (pqi_is_firmware_feature_enabled(firmware_features,
6779 firmware_features_iomem_addr,
6780 pqi_firmware_features[i].feature_bit)) {
6781 pqi_firmware_features[i].enabled = true;
6782 if (pqi_firmware_features[i].feature_bit ==
6783 PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE)
6784 ctrl_info->soft_reset_handshake_supported =
6785 true;
6786 }
6787 pqi_firmware_feature_update(ctrl_info,
6788 &pqi_firmware_features[i]);
6789 }
6790 }
6791
6792 static void pqi_init_firmware_features(void)
6793 {
6794 unsigned int i;
6795
6796 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6797 pqi_firmware_features[i].supported = false;
6798 pqi_firmware_features[i].enabled = false;
6799 }
6800 }
6801
6802 static void pqi_process_firmware_features_section(
6803 struct pqi_config_table_section_info *section_info)
6804 {
6805 mutex_lock(&pqi_firmware_features_mutex);
6806 pqi_init_firmware_features();
6807 pqi_process_firmware_features(section_info);
6808 mutex_unlock(&pqi_firmware_features_mutex);
6809 }
6810
6811 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
6812 {
6813 u32 table_length;
6814 u32 section_offset;
6815 void __iomem *table_iomem_addr;
6816 struct pqi_config_table *config_table;
6817 struct pqi_config_table_section_header *section;
6818 struct pqi_config_table_section_info section_info;
6819
6820 table_length = ctrl_info->config_table_length;
6821 if (table_length == 0)
6822 return 0;
6823
6824 config_table = kmalloc(table_length, GFP_KERNEL);
6825 if (!config_table) {
6826 dev_err(&ctrl_info->pci_dev->dev,
6827 "failed to allocate memory for PQI configuration table\n");
6828 return -ENOMEM;
6829 }
6830
6831 /*
6832 * Copy the config table contents from I/O memory space into the
6833 * temporary buffer.
6834 */
6835 table_iomem_addr = ctrl_info->iomem_base +
6836 ctrl_info->config_table_offset;
6837 memcpy_fromio(config_table, table_iomem_addr, table_length);
6838
6839 section_info.ctrl_info = ctrl_info;
6840 section_offset =
6841 get_unaligned_le32(&config_table->first_section_offset);
6842
6843 while (section_offset) {
6844 section = (void *)config_table + section_offset;
6845
6846 section_info.section = section;
6847 section_info.section_offset = section_offset;
6848 section_info.section_iomem_addr =
6849 table_iomem_addr + section_offset;
6850
6851 switch (get_unaligned_le16(&section->section_id)) {
6852 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES:
6853 pqi_process_firmware_features_section(&section_info);
6854 break;
6855 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
6856 if (pqi_disable_heartbeat)
6857 dev_warn(&ctrl_info->pci_dev->dev,
6858 "heartbeat disabled by module parameter\n");
6859 else
6860 ctrl_info->heartbeat_counter =
6861 table_iomem_addr +
6862 section_offset +
6863 offsetof(
6864 struct pqi_config_table_heartbeat,
6865 heartbeat_counter);
6866 break;
6867 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET:
6868 ctrl_info->soft_reset_status =
6869 table_iomem_addr +
6870 section_offset +
6871 offsetof(struct pqi_config_table_soft_reset,
6872 soft_reset_status);
6873 break;
6874 }
6875
6876 section_offset =
6877 get_unaligned_le16(&section->next_section_offset);
6878 }
6879
6880 kfree(config_table);
6881
6882 return 0;
6883 }
6884
6885 /* Switches the controller from PQI mode back into SIS mode. */
6886
6887 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
6888 {
6889 int rc;
6890
6891 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
6892 rc = pqi_reset(ctrl_info);
6893 if (rc)
6894 return rc;
6895 rc = sis_reenable_sis_mode(ctrl_info);
6896 if (rc) {
6897 dev_err(&ctrl_info->pci_dev->dev,
6898 "re-enabling SIS mode failed with error %d\n", rc);
6899 return rc;
6900 }
6901 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6902
6903 return 0;
6904 }
6905
6906 /*
6907 * If the controller isn't already in SIS mode, this function forces it into
6908 * SIS mode.
6909 */
6910
6911 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
6912 {
6913 if (!sis_is_firmware_running(ctrl_info))
6914 return -ENXIO;
6915
6916 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
6917 return 0;
6918
6919 if (sis_is_kernel_up(ctrl_info)) {
6920 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6921 return 0;
6922 }
6923
6924 return pqi_revert_to_sis_mode(ctrl_info);
6925 }
6926
6927 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
6928 {
6929 int rc;
6930
6931 rc = pqi_force_sis_mode(ctrl_info);
6932 if (rc)
6933 return rc;
6934
6935 /*
6936 * Wait until the controller is ready to start accepting SIS
6937 * commands.
6938 */
6939 rc = sis_wait_for_ctrl_ready(ctrl_info);
6940 if (rc)
6941 return rc;
6942
6943 /*
6944 * Get the controller properties. This allows us to determine
6945 * whether or not it supports PQI mode.
6946 */
6947 rc = sis_get_ctrl_properties(ctrl_info);
6948 if (rc) {
6949 dev_err(&ctrl_info->pci_dev->dev,
6950 "error obtaining controller properties\n");
6951 return rc;
6952 }
6953
6954 rc = sis_get_pqi_capabilities(ctrl_info);
6955 if (rc) {
6956 dev_err(&ctrl_info->pci_dev->dev,
6957 "error obtaining controller capabilities\n");
6958 return rc;
6959 }
6960
6961 if (reset_devices) {
6962 if (ctrl_info->max_outstanding_requests >
6963 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
6964 ctrl_info->max_outstanding_requests =
6965 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
6966 } else {
6967 if (ctrl_info->max_outstanding_requests >
6968 PQI_MAX_OUTSTANDING_REQUESTS)
6969 ctrl_info->max_outstanding_requests =
6970 PQI_MAX_OUTSTANDING_REQUESTS;
6971 }
6972
6973 pqi_calculate_io_resources(ctrl_info);
6974
6975 rc = pqi_alloc_error_buffer(ctrl_info);
6976 if (rc) {
6977 dev_err(&ctrl_info->pci_dev->dev,
6978 "failed to allocate PQI error buffer\n");
6979 return rc;
6980 }
6981
6982 /*
6983 * If the function we are about to call succeeds, the
6984 * controller will transition from legacy SIS mode
6985 * into PQI mode.
6986 */
6987 rc = sis_init_base_struct_addr(ctrl_info);
6988 if (rc) {
6989 dev_err(&ctrl_info->pci_dev->dev,
6990 "error initializing PQI mode\n");
6991 return rc;
6992 }
6993
6994 /* Wait for the controller to complete the SIS -> PQI transition. */
6995 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6996 if (rc) {
6997 dev_err(&ctrl_info->pci_dev->dev,
6998 "transition to PQI mode failed\n");
6999 return rc;
7000 }
7001
7002 /* From here on, we are running in PQI mode. */
7003 ctrl_info->pqi_mode_enabled = true;
7004 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7005
7006 rc = pqi_alloc_admin_queues(ctrl_info);
7007 if (rc) {
7008 dev_err(&ctrl_info->pci_dev->dev,
7009 "failed to allocate admin queues\n");
7010 return rc;
7011 }
7012
7013 rc = pqi_create_admin_queues(ctrl_info);
7014 if (rc) {
7015 dev_err(&ctrl_info->pci_dev->dev,
7016 "error creating admin queues\n");
7017 return rc;
7018 }
7019
7020 rc = pqi_report_device_capability(ctrl_info);
7021 if (rc) {
7022 dev_err(&ctrl_info->pci_dev->dev,
7023 "obtaining device capability failed\n");
7024 return rc;
7025 }
7026
7027 rc = pqi_validate_device_capability(ctrl_info);
7028 if (rc)
7029 return rc;
7030
7031 pqi_calculate_queue_resources(ctrl_info);
7032
7033 rc = pqi_enable_msix_interrupts(ctrl_info);
7034 if (rc)
7035 return rc;
7036
7037 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
7038 ctrl_info->max_msix_vectors =
7039 ctrl_info->num_msix_vectors_enabled;
7040 pqi_calculate_queue_resources(ctrl_info);
7041 }
7042
7043 rc = pqi_alloc_io_resources(ctrl_info);
7044 if (rc)
7045 return rc;
7046
7047 rc = pqi_alloc_operational_queues(ctrl_info);
7048 if (rc) {
7049 dev_err(&ctrl_info->pci_dev->dev,
7050 "failed to allocate operational queues\n");
7051 return rc;
7052 }
7053
7054 pqi_init_operational_queues(ctrl_info);
7055
7056 rc = pqi_request_irqs(ctrl_info);
7057 if (rc)
7058 return rc;
7059
7060 rc = pqi_create_queues(ctrl_info);
7061 if (rc)
7062 return rc;
7063
7064 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7065
7066 ctrl_info->controller_online = true;
7067
7068 rc = pqi_process_config_table(ctrl_info);
7069 if (rc)
7070 return rc;
7071
7072 pqi_start_heartbeat_timer(ctrl_info);
7073
7074 rc = pqi_enable_events(ctrl_info);
7075 if (rc) {
7076 dev_err(&ctrl_info->pci_dev->dev,
7077 "error enabling events\n");
7078 return rc;
7079 }
7080
7081 /* Register with the SCSI subsystem. */
7082 rc = pqi_register_scsi(ctrl_info);
7083 if (rc)
7084 return rc;
7085
7086 rc = pqi_get_ctrl_firmware_version(ctrl_info);
7087 if (rc) {
7088 dev_err(&ctrl_info->pci_dev->dev,
7089 "error obtaining firmware version\n");
7090 return rc;
7091 }
7092
7093 rc = pqi_set_diag_rescan(ctrl_info);
7094 if (rc) {
7095 dev_err(&ctrl_info->pci_dev->dev,
7096 "error enabling multi-lun rescan\n");
7097 return rc;
7098 }
7099
7100 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7101 if (rc) {
7102 dev_err(&ctrl_info->pci_dev->dev,
7103 "error updating host wellness\n");
7104 return rc;
7105 }
7106
7107 pqi_schedule_update_time_worker(ctrl_info);
7108
7109 pqi_scan_scsi_devices(ctrl_info);
7110
7111 return 0;
7112 }
7113
7114 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
7115 {
7116 unsigned int i;
7117 struct pqi_admin_queues *admin_queues;
7118 struct pqi_event_queue *event_queue;
7119
7120 admin_queues = &ctrl_info->admin_queues;
7121 admin_queues->iq_pi_copy = 0;
7122 admin_queues->oq_ci_copy = 0;
7123 writel(0, admin_queues->oq_pi);
7124
7125 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
7126 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
7127 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
7128 ctrl_info->queue_groups[i].oq_ci_copy = 0;
7129
7130 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]);
7131 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]);
7132 writel(0, ctrl_info->queue_groups[i].oq_pi);
7133 }
7134
7135 event_queue = &ctrl_info->event_queue;
7136 writel(0, event_queue->oq_pi);
7137 event_queue->oq_ci_copy = 0;
7138 }
7139
7140 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
7141 {
7142 int rc;
7143
7144 rc = pqi_force_sis_mode(ctrl_info);
7145 if (rc)
7146 return rc;
7147
7148 /*
7149 * Wait until the controller is ready to start accepting SIS
7150 * commands.
7151 */
7152 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
7153 if (rc)
7154 return rc;
7155
7156 /*
7157 * Get the controller properties. This allows us to determine
7158 * whether or not it supports PQI mode.
7159 */
7160 rc = sis_get_ctrl_properties(ctrl_info);
7161 if (rc) {
7162 dev_err(&ctrl_info->pci_dev->dev,
7163 "error obtaining controller properties\n");
7164 return rc;
7165 }
7166
7167 rc = sis_get_pqi_capabilities(ctrl_info);
7168 if (rc) {
7169 dev_err(&ctrl_info->pci_dev->dev,
7170 "error obtaining controller capabilities\n");
7171 return rc;
7172 }
7173
7174 /*
7175 * If the function we are about to call succeeds, the
7176 * controller will transition from legacy SIS mode
7177 * into PQI mode.
7178 */
7179 rc = sis_init_base_struct_addr(ctrl_info);
7180 if (rc) {
7181 dev_err(&ctrl_info->pci_dev->dev,
7182 "error initializing PQI mode\n");
7183 return rc;
7184 }
7185
7186 /* Wait for the controller to complete the SIS -> PQI transition. */
7187 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
7188 if (rc) {
7189 dev_err(&ctrl_info->pci_dev->dev,
7190 "transition to PQI mode failed\n");
7191 return rc;
7192 }
7193
7194 /* From here on, we are running in PQI mode. */
7195 ctrl_info->pqi_mode_enabled = true;
7196 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7197
7198 pqi_reinit_queues(ctrl_info);
7199
7200 rc = pqi_create_admin_queues(ctrl_info);
7201 if (rc) {
7202 dev_err(&ctrl_info->pci_dev->dev,
7203 "error creating admin queues\n");
7204 return rc;
7205 }
7206
7207 rc = pqi_create_queues(ctrl_info);
7208 if (rc)
7209 return rc;
7210
7211 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7212
7213 ctrl_info->controller_online = true;
7214 pqi_ctrl_unblock_requests(ctrl_info);
7215
7216 rc = pqi_process_config_table(ctrl_info);
7217 if (rc)
7218 return rc;
7219
7220 pqi_start_heartbeat_timer(ctrl_info);
7221
7222 rc = pqi_enable_events(ctrl_info);
7223 if (rc) {
7224 dev_err(&ctrl_info->pci_dev->dev,
7225 "error enabling events\n");
7226 return rc;
7227 }
7228
7229 rc = pqi_get_ctrl_firmware_version(ctrl_info);
7230 if (rc) {
7231 dev_err(&ctrl_info->pci_dev->dev,
7232 "error obtaining firmware version\n");
7233 return rc;
7234 }
7235
7236 rc = pqi_set_diag_rescan(ctrl_info);
7237 if (rc) {
7238 dev_err(&ctrl_info->pci_dev->dev,
7239 "error enabling multi-lun rescan\n");
7240 return rc;
7241 }
7242
7243 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7244 if (rc) {
7245 dev_err(&ctrl_info->pci_dev->dev,
7246 "error updating host wellness\n");
7247 return rc;
7248 }
7249
7250 pqi_schedule_update_time_worker(ctrl_info);
7251
7252 pqi_scan_scsi_devices(ctrl_info);
7253
7254 return 0;
7255 }
7256
7257 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
7258 u16 timeout)
7259 {
7260 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
7261 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
7262 }
7263
7264 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
7265 {
7266 int rc;
7267 u64 mask;
7268
7269 rc = pci_enable_device(ctrl_info->pci_dev);
7270 if (rc) {
7271 dev_err(&ctrl_info->pci_dev->dev,
7272 "failed to enable PCI device\n");
7273 return rc;
7274 }
7275
7276 if (sizeof(dma_addr_t) > 4)
7277 mask = DMA_BIT_MASK(64);
7278 else
7279 mask = DMA_BIT_MASK(32);
7280
7281 rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask);
7282 if (rc) {
7283 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
7284 goto disable_device;
7285 }
7286
7287 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
7288 if (rc) {
7289 dev_err(&ctrl_info->pci_dev->dev,
7290 "failed to obtain PCI resources\n");
7291 goto disable_device;
7292 }
7293
7294 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start(
7295 ctrl_info->pci_dev, 0),
7296 sizeof(struct pqi_ctrl_registers));
7297 if (!ctrl_info->iomem_base) {
7298 dev_err(&ctrl_info->pci_dev->dev,
7299 "failed to map memory for controller registers\n");
7300 rc = -ENOMEM;
7301 goto release_regions;
7302 }
7303
7304 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
7305
7306 /* Increase the PCIe completion timeout. */
7307 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
7308 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
7309 if (rc) {
7310 dev_err(&ctrl_info->pci_dev->dev,
7311 "failed to set PCIe completion timeout\n");
7312 goto release_regions;
7313 }
7314
7315 /* Enable bus mastering. */
7316 pci_set_master(ctrl_info->pci_dev);
7317
7318 ctrl_info->registers = ctrl_info->iomem_base;
7319 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
7320
7321 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
7322
7323 return 0;
7324
7325 release_regions:
7326 pci_release_regions(ctrl_info->pci_dev);
7327 disable_device:
7328 pci_disable_device(ctrl_info->pci_dev);
7329
7330 return rc;
7331 }
7332
7333 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
7334 {
7335 iounmap(ctrl_info->iomem_base);
7336 pci_release_regions(ctrl_info->pci_dev);
7337 if (pci_is_enabled(ctrl_info->pci_dev))
7338 pci_disable_device(ctrl_info->pci_dev);
7339 pci_set_drvdata(ctrl_info->pci_dev, NULL);
7340 }
7341
7342 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
7343 {
7344 struct pqi_ctrl_info *ctrl_info;
7345
7346 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
7347 GFP_KERNEL, numa_node);
7348 if (!ctrl_info)
7349 return NULL;
7350
7351 mutex_init(&ctrl_info->scan_mutex);
7352 mutex_init(&ctrl_info->lun_reset_mutex);
7353 mutex_init(&ctrl_info->ofa_mutex);
7354
7355 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
7356 spin_lock_init(&ctrl_info->scsi_device_list_lock);
7357
7358 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
7359 atomic_set(&ctrl_info->num_interrupts, 0);
7360
7361 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
7362 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
7363
7364 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
7365 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
7366
7367 sema_init(&ctrl_info->sync_request_sem,
7368 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
7369 init_waitqueue_head(&ctrl_info->block_requests_wait);
7370
7371 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
7372 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
7373 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
7374 pqi_raid_bypass_retry_worker);
7375
7376 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
7377 ctrl_info->irq_mode = IRQ_MODE_NONE;
7378 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
7379
7380 return ctrl_info;
7381 }
7382
7383 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
7384 {
7385 kfree(ctrl_info);
7386 }
7387
7388 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
7389 {
7390 pqi_free_irqs(ctrl_info);
7391 pqi_disable_msix_interrupts(ctrl_info);
7392 }
7393
7394 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
7395 {
7396 pqi_stop_heartbeat_timer(ctrl_info);
7397 pqi_free_interrupts(ctrl_info);
7398 if (ctrl_info->queue_memory_base)
7399 dma_free_coherent(&ctrl_info->pci_dev->dev,
7400 ctrl_info->queue_memory_length,
7401 ctrl_info->queue_memory_base,
7402 ctrl_info->queue_memory_base_dma_handle);
7403 if (ctrl_info->admin_queue_memory_base)
7404 dma_free_coherent(&ctrl_info->pci_dev->dev,
7405 ctrl_info->admin_queue_memory_length,
7406 ctrl_info->admin_queue_memory_base,
7407 ctrl_info->admin_queue_memory_base_dma_handle);
7408 pqi_free_all_io_requests(ctrl_info);
7409 if (ctrl_info->error_buffer)
7410 dma_free_coherent(&ctrl_info->pci_dev->dev,
7411 ctrl_info->error_buffer_length,
7412 ctrl_info->error_buffer,
7413 ctrl_info->error_buffer_dma_handle);
7414 if (ctrl_info->iomem_base)
7415 pqi_cleanup_pci_init(ctrl_info);
7416 pqi_free_ctrl_info(ctrl_info);
7417 }
7418
7419 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
7420 {
7421 pqi_cancel_rescan_worker(ctrl_info);
7422 pqi_cancel_update_time_worker(ctrl_info);
7423 pqi_remove_all_scsi_devices(ctrl_info);
7424 pqi_unregister_scsi(ctrl_info);
7425 if (ctrl_info->pqi_mode_enabled)
7426 pqi_revert_to_sis_mode(ctrl_info);
7427 pqi_free_ctrl_resources(ctrl_info);
7428 }
7429
7430 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info)
7431 {
7432 pqi_cancel_update_time_worker(ctrl_info);
7433 pqi_cancel_rescan_worker(ctrl_info);
7434 pqi_wait_until_lun_reset_finished(ctrl_info);
7435 pqi_wait_until_scan_finished(ctrl_info);
7436 pqi_ctrl_ofa_start(ctrl_info);
7437 pqi_ctrl_block_requests(ctrl_info);
7438 pqi_ctrl_wait_until_quiesced(ctrl_info);
7439 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS);
7440 pqi_fail_io_queued_for_all_devices(ctrl_info);
7441 pqi_wait_until_inbound_queues_empty(ctrl_info);
7442 pqi_stop_heartbeat_timer(ctrl_info);
7443 ctrl_info->pqi_mode_enabled = false;
7444 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7445 }
7446
7447 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info)
7448 {
7449 pqi_ofa_free_host_buffer(ctrl_info);
7450 ctrl_info->pqi_mode_enabled = true;
7451 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7452 ctrl_info->controller_online = true;
7453 pqi_ctrl_unblock_requests(ctrl_info);
7454 pqi_start_heartbeat_timer(ctrl_info);
7455 pqi_schedule_update_time_worker(ctrl_info);
7456 pqi_clear_soft_reset_status(ctrl_info,
7457 PQI_SOFT_RESET_ABORT);
7458 pqi_scan_scsi_devices(ctrl_info);
7459 }
7460
7461 static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info,
7462 u32 total_size, u32 chunk_size)
7463 {
7464 u32 sg_count;
7465 u32 size;
7466 int i;
7467 struct pqi_sg_descriptor *mem_descriptor = NULL;
7468 struct device *dev;
7469 struct pqi_ofa_memory *ofap;
7470
7471 dev = &ctrl_info->pci_dev->dev;
7472
7473 sg_count = (total_size + chunk_size - 1);
7474 sg_count /= chunk_size;
7475
7476 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7477
7478 if (sg_count*chunk_size < total_size)
7479 goto out;
7480
7481 ctrl_info->pqi_ofa_chunk_virt_addr =
7482 kcalloc(sg_count, sizeof(void *), GFP_KERNEL);
7483 if (!ctrl_info->pqi_ofa_chunk_virt_addr)
7484 goto out;
7485
7486 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) {
7487 dma_addr_t dma_handle;
7488
7489 ctrl_info->pqi_ofa_chunk_virt_addr[i] =
7490 dma_alloc_coherent(dev, chunk_size, &dma_handle,
7491 GFP_KERNEL);
7492
7493 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i])
7494 break;
7495
7496 mem_descriptor = &ofap->sg_descriptor[i];
7497 put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address);
7498 put_unaligned_le32 (chunk_size, &mem_descriptor->length);
7499 }
7500
7501 if (!size || size < total_size)
7502 goto out_free_chunks;
7503
7504 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags);
7505 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors);
7506 put_unaligned_le32(size, &ofap->bytes_allocated);
7507
7508 return 0;
7509
7510 out_free_chunks:
7511 while (--i >= 0) {
7512 mem_descriptor = &ofap->sg_descriptor[i];
7513 dma_free_coherent(dev, chunk_size,
7514 ctrl_info->pqi_ofa_chunk_virt_addr[i],
7515 get_unaligned_le64(&mem_descriptor->address));
7516 }
7517 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
7518
7519 out:
7520 put_unaligned_le32 (0, &ofap->bytes_allocated);
7521 return -ENOMEM;
7522 }
7523
7524 static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info)
7525 {
7526 u32 total_size;
7527 u32 min_chunk_size;
7528 u32 chunk_sz;
7529
7530 total_size = le32_to_cpu(
7531 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated);
7532 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS;
7533
7534 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2)
7535 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz))
7536 return 0;
7537
7538 return -ENOMEM;
7539 }
7540
7541 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
7542 u32 bytes_requested)
7543 {
7544 struct pqi_ofa_memory *pqi_ofa_memory;
7545 struct device *dev;
7546
7547 dev = &ctrl_info->pci_dev->dev;
7548 pqi_ofa_memory = dma_alloc_coherent(dev,
7549 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH,
7550 &ctrl_info->pqi_ofa_mem_dma_handle,
7551 GFP_KERNEL);
7552
7553 if (!pqi_ofa_memory)
7554 return;
7555
7556 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version);
7557 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE,
7558 sizeof(pqi_ofa_memory->signature));
7559 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested);
7560
7561 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory;
7562
7563 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) {
7564 dev_err(dev, "Failed to allocate host buffer of size = %u",
7565 bytes_requested);
7566 }
7567 }
7568
7569 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info)
7570 {
7571 int i;
7572 struct pqi_sg_descriptor *mem_descriptor;
7573 struct pqi_ofa_memory *ofap;
7574
7575 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7576
7577 if (!ofap)
7578 return;
7579
7580 if (!ofap->bytes_allocated)
7581 goto out;
7582
7583 mem_descriptor = ofap->sg_descriptor;
7584
7585 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors);
7586 i++) {
7587 dma_free_coherent(&ctrl_info->pci_dev->dev,
7588 get_unaligned_le32(&mem_descriptor[i].length),
7589 ctrl_info->pqi_ofa_chunk_virt_addr[i],
7590 get_unaligned_le64(&mem_descriptor[i].address));
7591 }
7592 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
7593
7594 out:
7595 dma_free_coherent(&ctrl_info->pci_dev->dev,
7596 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap,
7597 ctrl_info->pqi_ofa_mem_dma_handle);
7598 ctrl_info->pqi_ofa_mem_virt_addr = NULL;
7599 }
7600
7601 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info)
7602 {
7603 struct pqi_vendor_general_request request;
7604 size_t size;
7605 struct pqi_ofa_memory *ofap;
7606
7607 memset(&request, 0, sizeof(request));
7608
7609 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7610
7611 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
7612 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
7613 &request.header.iu_length);
7614 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE,
7615 &request.function_code);
7616
7617 if (ofap) {
7618 size = offsetof(struct pqi_ofa_memory, sg_descriptor) +
7619 get_unaligned_le16(&ofap->num_memory_descriptors) *
7620 sizeof(struct pqi_sg_descriptor);
7621
7622 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle,
7623 &request.data.ofa_memory_allocation.buffer_address);
7624 put_unaligned_le32(size,
7625 &request.data.ofa_memory_allocation.buffer_length);
7626
7627 }
7628
7629 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
7630 0, NULL, NO_TIMEOUT);
7631 }
7632
7633 #define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000
7634
7635 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info)
7636 {
7637 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY);
7638 return pqi_ctrl_init_resume(ctrl_info);
7639 }
7640
7641 static void pqi_perform_lockup_action(void)
7642 {
7643 switch (pqi_lockup_action) {
7644 case PANIC:
7645 panic("FATAL: Smart Family Controller lockup detected");
7646 break;
7647 case REBOOT:
7648 emergency_restart();
7649 break;
7650 case NONE:
7651 default:
7652 break;
7653 }
7654 }
7655
7656 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
7657 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
7658 .status = SAM_STAT_CHECK_CONDITION,
7659 };
7660
7661 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
7662 {
7663 unsigned int i;
7664 struct pqi_io_request *io_request;
7665 struct scsi_cmnd *scmd;
7666
7667 for (i = 0; i < ctrl_info->max_io_slots; i++) {
7668 io_request = &ctrl_info->io_request_pool[i];
7669 if (atomic_read(&io_request->refcount) == 0)
7670 continue;
7671
7672 scmd = io_request->scmd;
7673 if (scmd) {
7674 set_host_byte(scmd, DID_NO_CONNECT);
7675 } else {
7676 io_request->status = -ENXIO;
7677 io_request->error_info =
7678 &pqi_ctrl_offline_raid_error_info;
7679 }
7680
7681 io_request->io_complete_callback(io_request,
7682 io_request->context);
7683 }
7684 }
7685
7686 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
7687 {
7688 pqi_perform_lockup_action();
7689 pqi_stop_heartbeat_timer(ctrl_info);
7690 pqi_free_interrupts(ctrl_info);
7691 pqi_cancel_rescan_worker(ctrl_info);
7692 pqi_cancel_update_time_worker(ctrl_info);
7693 pqi_ctrl_wait_until_quiesced(ctrl_info);
7694 pqi_fail_all_outstanding_requests(ctrl_info);
7695 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
7696 pqi_ctrl_unblock_requests(ctrl_info);
7697 }
7698
7699 static void pqi_ctrl_offline_worker(struct work_struct *work)
7700 {
7701 struct pqi_ctrl_info *ctrl_info;
7702
7703 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
7704 pqi_take_ctrl_offline_deferred(ctrl_info);
7705 }
7706
7707 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
7708 {
7709 if (!ctrl_info->controller_online)
7710 return;
7711
7712 ctrl_info->controller_online = false;
7713 ctrl_info->pqi_mode_enabled = false;
7714 pqi_ctrl_block_requests(ctrl_info);
7715 if (!pqi_disable_ctrl_shutdown)
7716 sis_shutdown_ctrl(ctrl_info);
7717 pci_disable_device(ctrl_info->pci_dev);
7718 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
7719 schedule_work(&ctrl_info->ctrl_offline_work);
7720 }
7721
7722 static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
7723 const struct pci_device_id *id)
7724 {
7725 char *ctrl_description;
7726
7727 if (id->driver_data)
7728 ctrl_description = (char *)id->driver_data;
7729 else
7730 ctrl_description = "Microsemi Smart Family Controller";
7731
7732 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
7733 }
7734
7735 static int pqi_pci_probe(struct pci_dev *pci_dev,
7736 const struct pci_device_id *id)
7737 {
7738 int rc;
7739 int node, cp_node;
7740 struct pqi_ctrl_info *ctrl_info;
7741
7742 pqi_print_ctrl_info(pci_dev, id);
7743
7744 if (pqi_disable_device_id_wildcards &&
7745 id->subvendor == PCI_ANY_ID &&
7746 id->subdevice == PCI_ANY_ID) {
7747 dev_warn(&pci_dev->dev,
7748 "controller not probed because device ID wildcards are disabled\n");
7749 return -ENODEV;
7750 }
7751
7752 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
7753 dev_warn(&pci_dev->dev,
7754 "controller device ID matched using wildcards\n");
7755
7756 node = dev_to_node(&pci_dev->dev);
7757 if (node == NUMA_NO_NODE) {
7758 cp_node = cpu_to_node(0);
7759 if (cp_node == NUMA_NO_NODE)
7760 cp_node = 0;
7761 set_dev_node(&pci_dev->dev, cp_node);
7762 }
7763
7764 ctrl_info = pqi_alloc_ctrl_info(node);
7765 if (!ctrl_info) {
7766 dev_err(&pci_dev->dev,
7767 "failed to allocate controller info block\n");
7768 return -ENOMEM;
7769 }
7770
7771 ctrl_info->pci_dev = pci_dev;
7772
7773 rc = pqi_pci_init(ctrl_info);
7774 if (rc)
7775 goto error;
7776
7777 rc = pqi_ctrl_init(ctrl_info);
7778 if (rc)
7779 goto error;
7780
7781 return 0;
7782
7783 error:
7784 pqi_remove_ctrl(ctrl_info);
7785
7786 return rc;
7787 }
7788
7789 static void pqi_pci_remove(struct pci_dev *pci_dev)
7790 {
7791 struct pqi_ctrl_info *ctrl_info;
7792
7793 ctrl_info = pci_get_drvdata(pci_dev);
7794 if (!ctrl_info)
7795 return;
7796
7797 ctrl_info->in_shutdown = true;
7798
7799 pqi_remove_ctrl(ctrl_info);
7800 }
7801
7802 static void pqi_shutdown(struct pci_dev *pci_dev)
7803 {
7804 int rc;
7805 struct pqi_ctrl_info *ctrl_info;
7806
7807 ctrl_info = pci_get_drvdata(pci_dev);
7808 if (!ctrl_info)
7809 goto error;
7810
7811 /*
7812 * Write all data in the controller's battery-backed cache to
7813 * storage.
7814 */
7815 rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
7816 pqi_free_interrupts(ctrl_info);
7817 pqi_reset(ctrl_info);
7818 if (rc == 0)
7819 return;
7820
7821 error:
7822 dev_warn(&pci_dev->dev,
7823 "unable to flush controller cache\n");
7824 }
7825
7826 static void pqi_process_lockup_action_param(void)
7827 {
7828 unsigned int i;
7829
7830 if (!pqi_lockup_action_param)
7831 return;
7832
7833 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
7834 if (strcmp(pqi_lockup_action_param,
7835 pqi_lockup_actions[i].name) == 0) {
7836 pqi_lockup_action = pqi_lockup_actions[i].action;
7837 return;
7838 }
7839 }
7840
7841 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
7842 DRIVER_NAME_SHORT, pqi_lockup_action_param);
7843 }
7844
7845 static void pqi_process_module_params(void)
7846 {
7847 pqi_process_lockup_action_param();
7848 }
7849
7850 static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
7851 {
7852 struct pqi_ctrl_info *ctrl_info;
7853
7854 ctrl_info = pci_get_drvdata(pci_dev);
7855
7856 pqi_disable_events(ctrl_info);
7857 pqi_cancel_update_time_worker(ctrl_info);
7858 pqi_cancel_rescan_worker(ctrl_info);
7859 pqi_wait_until_scan_finished(ctrl_info);
7860 pqi_wait_until_lun_reset_finished(ctrl_info);
7861 pqi_wait_until_ofa_finished(ctrl_info);
7862 pqi_flush_cache(ctrl_info, SUSPEND);
7863 pqi_ctrl_block_requests(ctrl_info);
7864 pqi_ctrl_wait_until_quiesced(ctrl_info);
7865 pqi_wait_until_inbound_queues_empty(ctrl_info);
7866 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT);
7867 pqi_stop_heartbeat_timer(ctrl_info);
7868
7869 if (state.event == PM_EVENT_FREEZE)
7870 return 0;
7871
7872 pci_save_state(pci_dev);
7873 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
7874
7875 ctrl_info->controller_online = false;
7876 ctrl_info->pqi_mode_enabled = false;
7877
7878 return 0;
7879 }
7880
7881 static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
7882 {
7883 int rc;
7884 struct pqi_ctrl_info *ctrl_info;
7885
7886 ctrl_info = pci_get_drvdata(pci_dev);
7887
7888 if (pci_dev->current_state != PCI_D0) {
7889 ctrl_info->max_hw_queue_index = 0;
7890 pqi_free_interrupts(ctrl_info);
7891 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
7892 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
7893 IRQF_SHARED, DRIVER_NAME_SHORT,
7894 &ctrl_info->queue_groups[0]);
7895 if (rc) {
7896 dev_err(&ctrl_info->pci_dev->dev,
7897 "irq %u init failed with error %d\n",
7898 pci_dev->irq, rc);
7899 return rc;
7900 }
7901 pqi_start_heartbeat_timer(ctrl_info);
7902 pqi_ctrl_unblock_requests(ctrl_info);
7903 return 0;
7904 }
7905
7906 pci_set_power_state(pci_dev, PCI_D0);
7907 pci_restore_state(pci_dev);
7908
7909 return pqi_ctrl_init_resume(ctrl_info);
7910 }
7911
7912 /* Define the PCI IDs for the controllers that we support. */
7913 static const struct pci_device_id pqi_pci_id_table[] = {
7914 {
7915 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7916 0x105b, 0x1211)
7917 },
7918 {
7919 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7920 0x105b, 0x1321)
7921 },
7922 {
7923 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7924 0x152d, 0x8a22)
7925 },
7926 {
7927 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7928 0x152d, 0x8a23)
7929 },
7930 {
7931 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7932 0x152d, 0x8a24)
7933 },
7934 {
7935 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7936 0x152d, 0x8a36)
7937 },
7938 {
7939 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7940 0x152d, 0x8a37)
7941 },
7942 {
7943 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7944 0x193d, 0x8460)
7945 },
7946 {
7947 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7948 0x193d, 0x8461)
7949 },
7950 {
7951 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7952 0x193d, 0xc460)
7953 },
7954 {
7955 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7956 0x193d, 0xc461)
7957 },
7958 {
7959 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7960 0x193d, 0xf460)
7961 },
7962 {
7963 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7964 0x193d, 0xf461)
7965 },
7966 {
7967 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7968 0x1bd4, 0x0045)
7969 },
7970 {
7971 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7972 0x1bd4, 0x0046)
7973 },
7974 {
7975 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7976 0x1bd4, 0x0047)
7977 },
7978 {
7979 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7980 0x1bd4, 0x0048)
7981 },
7982 {
7983 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7984 0x1bd4, 0x004a)
7985 },
7986 {
7987 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7988 0x1bd4, 0x004b)
7989 },
7990 {
7991 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7992 0x1bd4, 0x004c)
7993 },
7994 {
7995 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7996 0x19e5, 0xd227)
7997 },
7998 {
7999 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8000 0x19e5, 0xd228)
8001 },
8002 {
8003 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8004 0x19e5, 0xd229)
8005 },
8006 {
8007 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8008 0x19e5, 0xd22a)
8009 },
8010 {
8011 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8012 0x19e5, 0xd22b)
8013 },
8014 {
8015 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8016 0x19e5, 0xd22c)
8017 },
8018 {
8019 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8020 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
8021 },
8022 {
8023 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8024 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
8025 },
8026 {
8027 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8028 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
8029 },
8030 {
8031 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8032 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
8033 },
8034 {
8035 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8036 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
8037 },
8038 {
8039 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8040 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
8041 },
8042 {
8043 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8044 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
8045 },
8046 {
8047 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8048 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
8049 },
8050 {
8051 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8052 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
8053 },
8054 {
8055 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8056 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
8057 },
8058 {
8059 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8060 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
8061 },
8062 {
8063 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8064 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
8065 },
8066 {
8067 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8068 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
8069 },
8070 {
8071 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8072 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
8073 },
8074 {
8075 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8076 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
8077 },
8078 {
8079 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8080 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
8081 },
8082 {
8083 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8084 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
8085 },
8086 {
8087 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8088 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
8089 },
8090 {
8091 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8092 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
8093 },
8094 {
8095 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8096 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
8097 },
8098 {
8099 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8100 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
8101 },
8102 {
8103 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8104 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
8105 },
8106 {
8107 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8108 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
8109 },
8110 {
8111 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8112 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
8113 },
8114 {
8115 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8116 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
8117 },
8118 {
8119 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8120 PCI_VENDOR_ID_ADAPTEC2, 0x1282)
8121 },
8122 {
8123 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8124 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
8125 },
8126 {
8127 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8128 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
8129 },
8130 {
8131 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8132 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
8133 },
8134 {
8135 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8136 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
8137 },
8138 {
8139 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8140 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
8141 },
8142 {
8143 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8144 PCI_VENDOR_ID_ADVANTECH, 0x8312)
8145 },
8146 {
8147 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8148 PCI_VENDOR_ID_DELL, 0x1fe0)
8149 },
8150 {
8151 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8152 PCI_VENDOR_ID_HP, 0x0600)
8153 },
8154 {
8155 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8156 PCI_VENDOR_ID_HP, 0x0601)
8157 },
8158 {
8159 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8160 PCI_VENDOR_ID_HP, 0x0602)
8161 },
8162 {
8163 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8164 PCI_VENDOR_ID_HP, 0x0603)
8165 },
8166 {
8167 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8168 PCI_VENDOR_ID_HP, 0x0609)
8169 },
8170 {
8171 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8172 PCI_VENDOR_ID_HP, 0x0650)
8173 },
8174 {
8175 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8176 PCI_VENDOR_ID_HP, 0x0651)
8177 },
8178 {
8179 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8180 PCI_VENDOR_ID_HP, 0x0652)
8181 },
8182 {
8183 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8184 PCI_VENDOR_ID_HP, 0x0653)
8185 },
8186 {
8187 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8188 PCI_VENDOR_ID_HP, 0x0654)
8189 },
8190 {
8191 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8192 PCI_VENDOR_ID_HP, 0x0655)
8193 },
8194 {
8195 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8196 PCI_VENDOR_ID_HP, 0x0700)
8197 },
8198 {
8199 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8200 PCI_VENDOR_ID_HP, 0x0701)
8201 },
8202 {
8203 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8204 PCI_VENDOR_ID_HP, 0x1001)
8205 },
8206 {
8207 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8208 PCI_VENDOR_ID_HP, 0x1100)
8209 },
8210 {
8211 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8212 PCI_VENDOR_ID_HP, 0x1101)
8213 },
8214 {
8215 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8216 PCI_ANY_ID, PCI_ANY_ID)
8217 },
8218 { 0 }
8219 };
8220
8221 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
8222
8223 static struct pci_driver pqi_pci_driver = {
8224 .name = DRIVER_NAME_SHORT,
8225 .id_table = pqi_pci_id_table,
8226 .probe = pqi_pci_probe,
8227 .remove = pqi_pci_remove,
8228 .shutdown = pqi_shutdown,
8229 #if defined(CONFIG_PM)
8230 .suspend = pqi_suspend,
8231 .resume = pqi_resume,
8232 #endif
8233 };
8234
8235 static int __init pqi_init(void)
8236 {
8237 int rc;
8238
8239 pr_info(DRIVER_NAME "\n");
8240
8241 pqi_sas_transport_template =
8242 sas_attach_transport(&pqi_sas_transport_functions);
8243 if (!pqi_sas_transport_template)
8244 return -ENODEV;
8245
8246 pqi_process_module_params();
8247
8248 rc = pci_register_driver(&pqi_pci_driver);
8249 if (rc)
8250 sas_release_transport(pqi_sas_transport_template);
8251
8252 return rc;
8253 }
8254
8255 static void __exit pqi_cleanup(void)
8256 {
8257 pci_unregister_driver(&pqi_pci_driver);
8258 sas_release_transport(pqi_sas_transport_template);
8259 }
8260
8261 module_init(pqi_init);
8262 module_exit(pqi_cleanup);
8263
8264 static void __attribute__((unused)) verify_structures(void)
8265 {
8266 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8267 sis_host_to_ctrl_doorbell) != 0x20);
8268 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8269 sis_interrupt_mask) != 0x34);
8270 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8271 sis_ctrl_to_host_doorbell) != 0x9c);
8272 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8273 sis_ctrl_to_host_doorbell_clear) != 0xa0);
8274 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8275 sis_driver_scratch) != 0xb0);
8276 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8277 sis_firmware_status) != 0xbc);
8278 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8279 sis_mailbox) != 0x1000);
8280 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8281 pqi_registers) != 0x4000);
8282
8283 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8284 iu_type) != 0x0);
8285 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8286 iu_length) != 0x2);
8287 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8288 response_queue_id) != 0x4);
8289 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8290 work_area) != 0x6);
8291 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
8292
8293 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8294 status) != 0x0);
8295 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8296 service_response) != 0x1);
8297 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8298 data_present) != 0x2);
8299 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8300 reserved) != 0x3);
8301 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8302 residual_count) != 0x4);
8303 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8304 data_length) != 0x8);
8305 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8306 reserved1) != 0xa);
8307 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8308 data) != 0xc);
8309 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
8310
8311 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8312 data_in_result) != 0x0);
8313 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8314 data_out_result) != 0x1);
8315 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8316 reserved) != 0x2);
8317 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8318 status) != 0x5);
8319 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8320 status_qualifier) != 0x6);
8321 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8322 sense_data_length) != 0x8);
8323 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8324 response_data_length) != 0xa);
8325 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8326 data_in_transferred) != 0xc);
8327 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8328 data_out_transferred) != 0x10);
8329 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8330 data) != 0x14);
8331 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
8332
8333 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8334 signature) != 0x0);
8335 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8336 function_and_status_code) != 0x8);
8337 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8338 max_admin_iq_elements) != 0x10);
8339 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8340 max_admin_oq_elements) != 0x11);
8341 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8342 admin_iq_element_length) != 0x12);
8343 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8344 admin_oq_element_length) != 0x13);
8345 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8346 max_reset_timeout) != 0x14);
8347 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8348 legacy_intx_status) != 0x18);
8349 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8350 legacy_intx_mask_set) != 0x1c);
8351 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8352 legacy_intx_mask_clear) != 0x20);
8353 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8354 device_status) != 0x40);
8355 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8356 admin_iq_pi_offset) != 0x48);
8357 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8358 admin_oq_ci_offset) != 0x50);
8359 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8360 admin_iq_element_array_addr) != 0x58);
8361 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8362 admin_oq_element_array_addr) != 0x60);
8363 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8364 admin_iq_ci_addr) != 0x68);
8365 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8366 admin_oq_pi_addr) != 0x70);
8367 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8368 admin_iq_num_elements) != 0x78);
8369 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8370 admin_oq_num_elements) != 0x79);
8371 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8372 admin_queue_int_msg_num) != 0x7a);
8373 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8374 device_error) != 0x80);
8375 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8376 error_details) != 0x88);
8377 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8378 device_reset) != 0x90);
8379 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8380 power_action) != 0x94);
8381 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
8382
8383 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8384 header.iu_type) != 0);
8385 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8386 header.iu_length) != 2);
8387 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8388 header.work_area) != 6);
8389 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8390 request_id) != 8);
8391 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8392 function_code) != 10);
8393 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8394 data.report_device_capability.buffer_length) != 44);
8395 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8396 data.report_device_capability.sg_descriptor) != 48);
8397 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8398 data.create_operational_iq.queue_id) != 12);
8399 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8400 data.create_operational_iq.element_array_addr) != 16);
8401 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8402 data.create_operational_iq.ci_addr) != 24);
8403 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8404 data.create_operational_iq.num_elements) != 32);
8405 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8406 data.create_operational_iq.element_length) != 34);
8407 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8408 data.create_operational_iq.queue_protocol) != 36);
8409 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8410 data.create_operational_oq.queue_id) != 12);
8411 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8412 data.create_operational_oq.element_array_addr) != 16);
8413 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8414 data.create_operational_oq.pi_addr) != 24);
8415 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8416 data.create_operational_oq.num_elements) != 32);
8417 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8418 data.create_operational_oq.element_length) != 34);
8419 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8420 data.create_operational_oq.queue_protocol) != 36);
8421 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8422 data.create_operational_oq.int_msg_num) != 40);
8423 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8424 data.create_operational_oq.coalescing_count) != 42);
8425 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8426 data.create_operational_oq.min_coalescing_time) != 44);
8427 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8428 data.create_operational_oq.max_coalescing_time) != 48);
8429 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8430 data.delete_operational_queue.queue_id) != 12);
8431 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
8432 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
8433 data.create_operational_iq) != 64 - 11);
8434 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
8435 data.create_operational_oq) != 64 - 11);
8436 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
8437 data.delete_operational_queue) != 64 - 11);
8438
8439 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8440 header.iu_type) != 0);
8441 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8442 header.iu_length) != 2);
8443 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8444 header.work_area) != 6);
8445 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8446 request_id) != 8);
8447 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8448 function_code) != 10);
8449 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8450 status) != 11);
8451 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8452 data.create_operational_iq.status_descriptor) != 12);
8453 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8454 data.create_operational_iq.iq_pi_offset) != 16);
8455 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8456 data.create_operational_oq.status_descriptor) != 12);
8457 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8458 data.create_operational_oq.oq_ci_offset) != 16);
8459 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
8460
8461 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8462 header.iu_type) != 0);
8463 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8464 header.iu_length) != 2);
8465 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8466 header.response_queue_id) != 4);
8467 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8468 header.work_area) != 6);
8469 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8470 request_id) != 8);
8471 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8472 nexus_id) != 10);
8473 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8474 buffer_length) != 12);
8475 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8476 lun_number) != 16);
8477 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8478 protocol_specific) != 24);
8479 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8480 error_index) != 27);
8481 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8482 cdb) != 32);
8483 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8484 sg_descriptors) != 64);
8485 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
8486 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
8487
8488 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8489 header.iu_type) != 0);
8490 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8491 header.iu_length) != 2);
8492 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8493 header.response_queue_id) != 4);
8494 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8495 header.work_area) != 6);
8496 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8497 request_id) != 8);
8498 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8499 nexus_id) != 12);
8500 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8501 buffer_length) != 16);
8502 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8503 data_encryption_key_index) != 22);
8504 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8505 encrypt_tweak_lower) != 24);
8506 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8507 encrypt_tweak_upper) != 28);
8508 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8509 cdb) != 32);
8510 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8511 error_index) != 48);
8512 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8513 num_sg_descriptors) != 50);
8514 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8515 cdb_length) != 51);
8516 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8517 lun_number) != 52);
8518 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8519 sg_descriptors) != 64);
8520 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
8521 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
8522
8523 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8524 header.iu_type) != 0);
8525 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8526 header.iu_length) != 2);
8527 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8528 request_id) != 8);
8529 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8530 error_index) != 10);
8531
8532 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8533 header.iu_type) != 0);
8534 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8535 header.iu_length) != 2);
8536 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8537 header.response_queue_id) != 4);
8538 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8539 request_id) != 8);
8540 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8541 data.report_event_configuration.buffer_length) != 12);
8542 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8543 data.report_event_configuration.sg_descriptors) != 16);
8544 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8545 data.set_event_configuration.global_event_oq_id) != 10);
8546 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8547 data.set_event_configuration.buffer_length) != 12);
8548 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8549 data.set_event_configuration.sg_descriptors) != 16);
8550
8551 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
8552 max_inbound_iu_length) != 6);
8553 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
8554 max_outbound_iu_length) != 14);
8555 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
8556
8557 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8558 data_length) != 0);
8559 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8560 iq_arbitration_priority_support_bitmask) != 8);
8561 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8562 maximum_aw_a) != 9);
8563 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8564 maximum_aw_b) != 10);
8565 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8566 maximum_aw_c) != 11);
8567 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8568 max_inbound_queues) != 16);
8569 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8570 max_elements_per_iq) != 18);
8571 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8572 max_iq_element_length) != 24);
8573 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8574 min_iq_element_length) != 26);
8575 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8576 max_outbound_queues) != 30);
8577 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8578 max_elements_per_oq) != 32);
8579 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8580 intr_coalescing_time_granularity) != 34);
8581 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8582 max_oq_element_length) != 36);
8583 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8584 min_oq_element_length) != 38);
8585 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8586 iu_layer_descriptors) != 64);
8587 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
8588
8589 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
8590 event_type) != 0);
8591 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
8592 oq_id) != 2);
8593 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
8594
8595 BUILD_BUG_ON(offsetof(struct pqi_event_config,
8596 num_event_descriptors) != 2);
8597 BUILD_BUG_ON(offsetof(struct pqi_event_config,
8598 descriptors) != 4);
8599
8600 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
8601 ARRAY_SIZE(pqi_supported_event_types));
8602
8603 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8604 header.iu_type) != 0);
8605 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8606 header.iu_length) != 2);
8607 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8608 event_type) != 8);
8609 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8610 event_id) != 10);
8611 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8612 additional_event_id) != 12);
8613 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8614 data) != 16);
8615 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
8616
8617 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8618 header.iu_type) != 0);
8619 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8620 header.iu_length) != 2);
8621 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8622 event_type) != 8);
8623 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8624 event_id) != 10);
8625 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8626 additional_event_id) != 12);
8627 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
8628
8629 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8630 header.iu_type) != 0);
8631 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8632 header.iu_length) != 2);
8633 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8634 request_id) != 8);
8635 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8636 nexus_id) != 10);
8637 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8638 lun_number) != 16);
8639 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8640 protocol_specific) != 24);
8641 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8642 outbound_queue_id_to_manage) != 26);
8643 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8644 request_id_to_manage) != 28);
8645 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8646 task_management_function) != 30);
8647 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
8648
8649 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8650 header.iu_type) != 0);
8651 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8652 header.iu_length) != 2);
8653 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8654 request_id) != 8);
8655 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8656 nexus_id) != 10);
8657 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8658 additional_response_info) != 12);
8659 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8660 response_code) != 15);
8661 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
8662
8663 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8664 configured_logical_drive_count) != 0);
8665 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8666 configuration_signature) != 1);
8667 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8668 firmware_version) != 5);
8669 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8670 extended_logical_unit_count) != 154);
8671 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8672 firmware_build_number) != 190);
8673 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8674 controller_mode) != 292);
8675
8676 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8677 phys_bay_in_box) != 115);
8678 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8679 device_type) != 120);
8680 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8681 redundant_path_present_map) != 1736);
8682 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8683 active_path_number) != 1738);
8684 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8685 alternate_paths_phys_connector) != 1739);
8686 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8687 alternate_paths_phys_box_on_port) != 1755);
8688 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8689 current_queue_depth_limit) != 1796);
8690 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
8691
8692 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
8693 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
8694 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
8695 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8696 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
8697 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8698 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
8699 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
8700 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8701 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
8702 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
8703 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8704
8705 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
8706 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
8707 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
8708 }
Linux with added FPC-III support