1 /* 2 * driver for Microsemi PQI-based storage controllers 3 * Copyright (c) 2016-2017 Microsemi Corporation 4 * Copyright (c) 2016 PMC-Sierra, Inc. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; version 2 of the License. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 13 * NON INFRINGEMENT. See the GNU General Public License for more details. 14 * 15 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com 16 * 17 */ 18 19 #include <linux/module.h> 20 #include <linux/kernel.h> 21 #include <linux/pci.h> 22 #include <linux/delay.h> 23 #include <linux/interrupt.h> 24 #include <linux/sched.h> 25 #include <linux/rtc.h> 26 #include <linux/bcd.h> 27 #include <linux/reboot.h> 28 #include <linux/cciss_ioctl.h> 29 #include <linux/blk-mq-pci.h> 30 #include <scsi/scsi_host.h> 31 #include <scsi/scsi_cmnd.h> 32 #include <scsi/scsi_device.h> 33 #include <scsi/scsi_eh.h> 34 #include <scsi/scsi_transport_sas.h> 35 #include <asm/unaligned.h> 36 #include "smartpqi.h" 37 #include "smartpqi_sis.h" 38 39 #if !defined(BUILD_TIMESTAMP) 40 #define BUILD_TIMESTAMP 41 #endif 42 43 #define DRIVER_VERSION "1.1.2-125" 44 #define DRIVER_MAJOR 1 45 #define DRIVER_MINOR 1 46 #define DRIVER_RELEASE 2 47 #define DRIVER_REVISION 125 48 49 #define DRIVER_NAME "Microsemi PQI Driver (v" \ 50 DRIVER_VERSION BUILD_TIMESTAMP ")" 51 #define DRIVER_NAME_SHORT "smartpqi" 52 53 #define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor)) 54 55 MODULE_AUTHOR("Microsemi"); 56 MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version " 57 DRIVER_VERSION); 58 MODULE_SUPPORTED_DEVICE("Microsemi Smart Family Controllers"); 59 MODULE_VERSION(DRIVER_VERSION); 60 MODULE_LICENSE("GPL"); 61 62 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info); 63 static void pqi_ctrl_offline_worker(struct work_struct *work); 64 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info); 65 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info); 66 static void pqi_scan_start(struct Scsi_Host *shost); 67 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, 68 struct pqi_queue_group *queue_group, enum pqi_io_path path, 69 struct pqi_io_request *io_request); 70 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, 71 struct pqi_iu_header *request, unsigned int flags, 72 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs); 73 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, 74 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, 75 unsigned int cdb_length, struct pqi_queue_group *queue_group, 76 struct pqi_encryption_info *encryption_info, bool raid_bypass); 77 78 /* for flags argument to pqi_submit_raid_request_synchronous() */ 79 #define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1 80 81 static struct scsi_transport_template *pqi_sas_transport_template; 82 83 static atomic_t pqi_controller_count = ATOMIC_INIT(0); 84 85 enum pqi_lockup_action { 86 NONE, 87 REBOOT, 88 PANIC 89 }; 90 91 static enum pqi_lockup_action pqi_lockup_action = NONE; 92 93 static struct { 94 enum pqi_lockup_action action; 95 char *name; 96 } pqi_lockup_actions[] = { 97 { 98 .action = NONE, 99 .name = "none", 100 }, 101 { 102 .action = REBOOT, 103 .name = "reboot", 104 }, 105 { 106 .action = PANIC, 107 .name = "panic", 108 }, 109 }; 110 111 static unsigned int pqi_supported_event_types[] = { 112 PQI_EVENT_TYPE_HOTPLUG, 113 PQI_EVENT_TYPE_HARDWARE, 114 PQI_EVENT_TYPE_PHYSICAL_DEVICE, 115 PQI_EVENT_TYPE_LOGICAL_DEVICE, 116 PQI_EVENT_TYPE_AIO_STATE_CHANGE, 117 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE, 118 }; 119 120 static int pqi_disable_device_id_wildcards; 121 module_param_named(disable_device_id_wildcards, 122 pqi_disable_device_id_wildcards, int, 0644); 123 MODULE_PARM_DESC(disable_device_id_wildcards, 124 "Disable device ID wildcards."); 125 126 static int pqi_disable_heartbeat; 127 module_param_named(disable_heartbeat, 128 pqi_disable_heartbeat, int, 0644); 129 MODULE_PARM_DESC(disable_heartbeat, 130 "Disable heartbeat."); 131 132 static int pqi_disable_ctrl_shutdown; 133 module_param_named(disable_ctrl_shutdown, 134 pqi_disable_ctrl_shutdown, int, 0644); 135 MODULE_PARM_DESC(disable_ctrl_shutdown, 136 "Disable controller shutdown when controller locked up."); 137 138 static char *pqi_lockup_action_param; 139 module_param_named(lockup_action, 140 pqi_lockup_action_param, charp, 0644); 141 MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n" 142 "\t\tSupported: none, reboot, panic\n" 143 "\t\tDefault: none"); 144 145 static char *raid_levels[] = { 146 "RAID-0", 147 "RAID-4", 148 "RAID-1(1+0)", 149 "RAID-5", 150 "RAID-5+1", 151 "RAID-ADG", 152 "RAID-1(ADM)", 153 }; 154 155 static char *pqi_raid_level_to_string(u8 raid_level) 156 { 157 if (raid_level < ARRAY_SIZE(raid_levels)) 158 return raid_levels[raid_level]; 159 160 return "RAID UNKNOWN"; 161 } 162 163 #define SA_RAID_0 0 164 #define SA_RAID_4 1 165 #define SA_RAID_1 2 /* also used for RAID 10 */ 166 #define SA_RAID_5 3 /* also used for RAID 50 */ 167 #define SA_RAID_51 4 168 #define SA_RAID_6 5 /* also used for RAID 60 */ 169 #define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 170 #define SA_RAID_MAX SA_RAID_ADM 171 #define SA_RAID_UNKNOWN 0xff 172 173 static inline void pqi_scsi_done(struct scsi_cmnd *scmd) 174 { 175 pqi_prep_for_scsi_done(scmd); 176 scmd->scsi_done(scmd); 177 } 178 179 static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2) 180 { 181 return memcmp(scsi3addr1, scsi3addr2, 8) == 0; 182 } 183 184 static inline struct pqi_ctrl_info *shost_to_hba(struct Scsi_Host *shost) 185 { 186 void *hostdata = shost_priv(shost); 187 188 return *((struct pqi_ctrl_info **)hostdata); 189 } 190 191 static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device) 192 { 193 return !device->is_physical_device; 194 } 195 196 static inline bool pqi_is_external_raid_addr(u8 *scsi3addr) 197 { 198 return scsi3addr[2] != 0; 199 } 200 201 static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info) 202 { 203 return !ctrl_info->controller_online; 204 } 205 206 static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info) 207 { 208 if (ctrl_info->controller_online) 209 if (!sis_is_firmware_running(ctrl_info)) 210 pqi_take_ctrl_offline(ctrl_info); 211 } 212 213 static inline bool pqi_is_hba_lunid(u8 *scsi3addr) 214 { 215 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID); 216 } 217 218 static inline enum pqi_ctrl_mode pqi_get_ctrl_mode( 219 struct pqi_ctrl_info *ctrl_info) 220 { 221 return sis_read_driver_scratch(ctrl_info); 222 } 223 224 static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info, 225 enum pqi_ctrl_mode mode) 226 { 227 sis_write_driver_scratch(ctrl_info, mode); 228 } 229 230 static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info) 231 { 232 ctrl_info->block_requests = true; 233 scsi_block_requests(ctrl_info->scsi_host); 234 } 235 236 static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info) 237 { 238 ctrl_info->block_requests = false; 239 wake_up_all(&ctrl_info->block_requests_wait); 240 pqi_retry_raid_bypass_requests(ctrl_info); 241 scsi_unblock_requests(ctrl_info->scsi_host); 242 } 243 244 static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info) 245 { 246 return ctrl_info->block_requests; 247 } 248 249 static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info, 250 unsigned long timeout_msecs) 251 { 252 unsigned long remaining_msecs; 253 254 if (!pqi_ctrl_blocked(ctrl_info)) 255 return timeout_msecs; 256 257 atomic_inc(&ctrl_info->num_blocked_threads); 258 259 if (timeout_msecs == NO_TIMEOUT) { 260 wait_event(ctrl_info->block_requests_wait, 261 !pqi_ctrl_blocked(ctrl_info)); 262 remaining_msecs = timeout_msecs; 263 } else { 264 unsigned long remaining_jiffies; 265 266 remaining_jiffies = 267 wait_event_timeout(ctrl_info->block_requests_wait, 268 !pqi_ctrl_blocked(ctrl_info), 269 msecs_to_jiffies(timeout_msecs)); 270 remaining_msecs = jiffies_to_msecs(remaining_jiffies); 271 } 272 273 atomic_dec(&ctrl_info->num_blocked_threads); 274 275 return remaining_msecs; 276 } 277 278 static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info) 279 { 280 atomic_inc(&ctrl_info->num_busy_threads); 281 } 282 283 static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info) 284 { 285 atomic_dec(&ctrl_info->num_busy_threads); 286 } 287 288 static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info) 289 { 290 while (atomic_read(&ctrl_info->num_busy_threads) > 291 atomic_read(&ctrl_info->num_blocked_threads)) 292 usleep_range(1000, 2000); 293 } 294 295 static inline bool pqi_device_offline(struct pqi_scsi_dev *device) 296 { 297 return device->device_offline; 298 } 299 300 static inline void pqi_device_reset_start(struct pqi_scsi_dev *device) 301 { 302 device->in_reset = true; 303 } 304 305 static inline void pqi_device_reset_done(struct pqi_scsi_dev *device) 306 { 307 device->in_reset = false; 308 } 309 310 static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device) 311 { 312 return device->in_reset; 313 } 314 315 static inline void pqi_schedule_rescan_worker_with_delay( 316 struct pqi_ctrl_info *ctrl_info, unsigned long delay) 317 { 318 if (pqi_ctrl_offline(ctrl_info)) 319 return; 320 321 schedule_delayed_work(&ctrl_info->rescan_work, delay); 322 } 323 324 static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info) 325 { 326 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0); 327 } 328 329 #define PQI_RESCAN_WORK_DELAY (10 * HZ) 330 331 static inline void pqi_schedule_rescan_worker_delayed( 332 struct pqi_ctrl_info *ctrl_info) 333 { 334 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY); 335 } 336 337 static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info) 338 { 339 cancel_delayed_work_sync(&ctrl_info->rescan_work); 340 } 341 342 static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info) 343 { 344 if (!ctrl_info->heartbeat_counter) 345 return 0; 346 347 return readl(ctrl_info->heartbeat_counter); 348 } 349 350 static int pqi_map_single(struct pci_dev *pci_dev, 351 struct pqi_sg_descriptor *sg_descriptor, void *buffer, 352 size_t buffer_length, int data_direction) 353 { 354 dma_addr_t bus_address; 355 356 if (!buffer || buffer_length == 0 || data_direction == PCI_DMA_NONE) 357 return 0; 358 359 bus_address = pci_map_single(pci_dev, buffer, buffer_length, 360 data_direction); 361 if (pci_dma_mapping_error(pci_dev, bus_address)) 362 return -ENOMEM; 363 364 put_unaligned_le64((u64)bus_address, &sg_descriptor->address); 365 put_unaligned_le32(buffer_length, &sg_descriptor->length); 366 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 367 368 return 0; 369 } 370 371 static void pqi_pci_unmap(struct pci_dev *pci_dev, 372 struct pqi_sg_descriptor *descriptors, int num_descriptors, 373 int data_direction) 374 { 375 int i; 376 377 if (data_direction == PCI_DMA_NONE) 378 return; 379 380 for (i = 0; i < num_descriptors; i++) 381 pci_unmap_single(pci_dev, 382 (dma_addr_t)get_unaligned_le64(&descriptors[i].address), 383 get_unaligned_le32(&descriptors[i].length), 384 data_direction); 385 } 386 387 static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info, 388 struct pqi_raid_path_request *request, u8 cmd, 389 u8 *scsi3addr, void *buffer, size_t buffer_length, 390 u16 vpd_page, int *pci_direction) 391 { 392 u8 *cdb; 393 int pci_dir; 394 395 memset(request, 0, sizeof(*request)); 396 397 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 398 put_unaligned_le16(offsetof(struct pqi_raid_path_request, 399 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH, 400 &request->header.iu_length); 401 put_unaligned_le32(buffer_length, &request->buffer_length); 402 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number)); 403 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 404 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 405 406 cdb = request->cdb; 407 408 switch (cmd) { 409 case INQUIRY: 410 request->data_direction = SOP_READ_FLAG; 411 cdb[0] = INQUIRY; 412 if (vpd_page & VPD_PAGE) { 413 cdb[1] = 0x1; 414 cdb[2] = (u8)vpd_page; 415 } 416 cdb[4] = (u8)buffer_length; 417 break; 418 case CISS_REPORT_LOG: 419 case CISS_REPORT_PHYS: 420 request->data_direction = SOP_READ_FLAG; 421 cdb[0] = cmd; 422 if (cmd == CISS_REPORT_PHYS) 423 cdb[1] = CISS_REPORT_PHYS_EXTENDED; 424 else 425 cdb[1] = CISS_REPORT_LOG_EXTENDED; 426 put_unaligned_be32(buffer_length, &cdb[6]); 427 break; 428 case CISS_GET_RAID_MAP: 429 request->data_direction = SOP_READ_FLAG; 430 cdb[0] = CISS_READ; 431 cdb[1] = CISS_GET_RAID_MAP; 432 put_unaligned_be32(buffer_length, &cdb[6]); 433 break; 434 case SA_FLUSH_CACHE: 435 request->data_direction = SOP_WRITE_FLAG; 436 cdb[0] = BMIC_WRITE; 437 cdb[6] = BMIC_FLUSH_CACHE; 438 put_unaligned_be16(buffer_length, &cdb[7]); 439 break; 440 case BMIC_IDENTIFY_CONTROLLER: 441 case BMIC_IDENTIFY_PHYSICAL_DEVICE: 442 request->data_direction = SOP_READ_FLAG; 443 cdb[0] = BMIC_READ; 444 cdb[6] = cmd; 445 put_unaligned_be16(buffer_length, &cdb[7]); 446 break; 447 case BMIC_WRITE_HOST_WELLNESS: 448 request->data_direction = SOP_WRITE_FLAG; 449 cdb[0] = BMIC_WRITE; 450 cdb[6] = cmd; 451 put_unaligned_be16(buffer_length, &cdb[7]); 452 break; 453 default: 454 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n", 455 cmd); 456 break; 457 } 458 459 switch (request->data_direction) { 460 case SOP_READ_FLAG: 461 pci_dir = PCI_DMA_FROMDEVICE; 462 break; 463 case SOP_WRITE_FLAG: 464 pci_dir = PCI_DMA_TODEVICE; 465 break; 466 case SOP_NO_DIRECTION_FLAG: 467 pci_dir = PCI_DMA_NONE; 468 break; 469 default: 470 pci_dir = PCI_DMA_BIDIRECTIONAL; 471 break; 472 } 473 474 *pci_direction = pci_dir; 475 476 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0], 477 buffer, buffer_length, pci_dir); 478 } 479 480 static inline void pqi_reinit_io_request(struct pqi_io_request *io_request) 481 { 482 io_request->scmd = NULL; 483 io_request->status = 0; 484 io_request->error_info = NULL; 485 io_request->raid_bypass = false; 486 } 487 488 static struct pqi_io_request *pqi_alloc_io_request( 489 struct pqi_ctrl_info *ctrl_info) 490 { 491 struct pqi_io_request *io_request; 492 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */ 493 494 while (1) { 495 io_request = &ctrl_info->io_request_pool[i]; 496 if (atomic_inc_return(&io_request->refcount) == 1) 497 break; 498 atomic_dec(&io_request->refcount); 499 i = (i + 1) % ctrl_info->max_io_slots; 500 } 501 502 /* benignly racy */ 503 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots; 504 505 pqi_reinit_io_request(io_request); 506 507 return io_request; 508 } 509 510 static void pqi_free_io_request(struct pqi_io_request *io_request) 511 { 512 atomic_dec(&io_request->refcount); 513 } 514 515 static int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info, 516 struct bmic_identify_controller *buffer) 517 { 518 int rc; 519 int pci_direction; 520 struct pqi_raid_path_request request; 521 522 rc = pqi_build_raid_path_request(ctrl_info, &request, 523 BMIC_IDENTIFY_CONTROLLER, RAID_CTLR_LUNID, buffer, 524 sizeof(*buffer), 0, &pci_direction); 525 if (rc) 526 return rc; 527 528 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 529 NULL, NO_TIMEOUT); 530 531 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 532 pci_direction); 533 534 return rc; 535 } 536 537 static int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info, 538 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length) 539 { 540 int rc; 541 int pci_direction; 542 struct pqi_raid_path_request request; 543 544 rc = pqi_build_raid_path_request(ctrl_info, &request, 545 INQUIRY, scsi3addr, buffer, buffer_length, vpd_page, 546 &pci_direction); 547 if (rc) 548 return rc; 549 550 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 551 NULL, NO_TIMEOUT); 552 553 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 554 pci_direction); 555 556 return rc; 557 } 558 559 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info, 560 struct pqi_scsi_dev *device, 561 struct bmic_identify_physical_device *buffer, 562 size_t buffer_length) 563 { 564 int rc; 565 int pci_direction; 566 u16 bmic_device_index; 567 struct pqi_raid_path_request request; 568 569 rc = pqi_build_raid_path_request(ctrl_info, &request, 570 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer, 571 buffer_length, 0, &pci_direction); 572 if (rc) 573 return rc; 574 575 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr); 576 request.cdb[2] = (u8)bmic_device_index; 577 request.cdb[9] = (u8)(bmic_device_index >> 8); 578 579 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 580 0, NULL, NO_TIMEOUT); 581 582 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 583 pci_direction); 584 585 return rc; 586 } 587 588 static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info, 589 enum bmic_flush_cache_shutdown_event shutdown_event) 590 { 591 int rc; 592 struct pqi_raid_path_request request; 593 int pci_direction; 594 struct bmic_flush_cache *flush_cache; 595 596 /* 597 * Don't bother trying to flush the cache if the controller is 598 * locked up. 599 */ 600 if (pqi_ctrl_offline(ctrl_info)) 601 return -ENXIO; 602 603 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL); 604 if (!flush_cache) 605 return -ENOMEM; 606 607 flush_cache->shutdown_event = shutdown_event; 608 609 rc = pqi_build_raid_path_request(ctrl_info, &request, 610 SA_FLUSH_CACHE, RAID_CTLR_LUNID, flush_cache, 611 sizeof(*flush_cache), 0, &pci_direction); 612 if (rc) 613 goto out; 614 615 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 616 0, NULL, NO_TIMEOUT); 617 618 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 619 pci_direction); 620 621 out: 622 kfree(flush_cache); 623 624 return rc; 625 } 626 627 static int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info, 628 void *buffer, size_t buffer_length) 629 { 630 int rc; 631 struct pqi_raid_path_request request; 632 int pci_direction; 633 634 rc = pqi_build_raid_path_request(ctrl_info, &request, 635 BMIC_WRITE_HOST_WELLNESS, RAID_CTLR_LUNID, buffer, 636 buffer_length, 0, &pci_direction); 637 if (rc) 638 return rc; 639 640 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 641 0, NULL, NO_TIMEOUT); 642 643 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 644 pci_direction); 645 646 return rc; 647 } 648 649 #pragma pack(1) 650 651 struct bmic_host_wellness_driver_version { 652 u8 start_tag[4]; 653 u8 driver_version_tag[2]; 654 __le16 driver_version_length; 655 char driver_version[32]; 656 u8 end_tag[2]; 657 }; 658 659 #pragma pack() 660 661 static int pqi_write_driver_version_to_host_wellness( 662 struct pqi_ctrl_info *ctrl_info) 663 { 664 int rc; 665 struct bmic_host_wellness_driver_version *buffer; 666 size_t buffer_length; 667 668 buffer_length = sizeof(*buffer); 669 670 buffer = kmalloc(buffer_length, GFP_KERNEL); 671 if (!buffer) 672 return -ENOMEM; 673 674 buffer->start_tag[0] = '<'; 675 buffer->start_tag[1] = 'H'; 676 buffer->start_tag[2] = 'W'; 677 buffer->start_tag[3] = '>'; 678 buffer->driver_version_tag[0] = 'D'; 679 buffer->driver_version_tag[1] = 'V'; 680 put_unaligned_le16(sizeof(buffer->driver_version), 681 &buffer->driver_version_length); 682 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION, 683 sizeof(buffer->driver_version) - 1); 684 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0'; 685 buffer->end_tag[0] = 'Z'; 686 buffer->end_tag[1] = 'Z'; 687 688 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length); 689 690 kfree(buffer); 691 692 return rc; 693 } 694 695 #pragma pack(1) 696 697 struct bmic_host_wellness_time { 698 u8 start_tag[4]; 699 u8 time_tag[2]; 700 __le16 time_length; 701 u8 time[8]; 702 u8 dont_write_tag[2]; 703 u8 end_tag[2]; 704 }; 705 706 #pragma pack() 707 708 static int pqi_write_current_time_to_host_wellness( 709 struct pqi_ctrl_info *ctrl_info) 710 { 711 int rc; 712 struct bmic_host_wellness_time *buffer; 713 size_t buffer_length; 714 time64_t local_time; 715 unsigned int year; 716 struct tm tm; 717 718 buffer_length = sizeof(*buffer); 719 720 buffer = kmalloc(buffer_length, GFP_KERNEL); 721 if (!buffer) 722 return -ENOMEM; 723 724 buffer->start_tag[0] = '<'; 725 buffer->start_tag[1] = 'H'; 726 buffer->start_tag[2] = 'W'; 727 buffer->start_tag[3] = '>'; 728 buffer->time_tag[0] = 'T'; 729 buffer->time_tag[1] = 'D'; 730 put_unaligned_le16(sizeof(buffer->time), 731 &buffer->time_length); 732 733 local_time = ktime_get_real_seconds(); 734 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm); 735 year = tm.tm_year + 1900; 736 737 buffer->time[0] = bin2bcd(tm.tm_hour); 738 buffer->time[1] = bin2bcd(tm.tm_min); 739 buffer->time[2] = bin2bcd(tm.tm_sec); 740 buffer->time[3] = 0; 741 buffer->time[4] = bin2bcd(tm.tm_mon + 1); 742 buffer->time[5] = bin2bcd(tm.tm_mday); 743 buffer->time[6] = bin2bcd(year / 100); 744 buffer->time[7] = bin2bcd(year % 100); 745 746 buffer->dont_write_tag[0] = 'D'; 747 buffer->dont_write_tag[1] = 'W'; 748 buffer->end_tag[0] = 'Z'; 749 buffer->end_tag[1] = 'Z'; 750 751 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length); 752 753 kfree(buffer); 754 755 return rc; 756 } 757 758 #define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * HZ) 759 760 static void pqi_update_time_worker(struct work_struct *work) 761 { 762 int rc; 763 struct pqi_ctrl_info *ctrl_info; 764 765 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, 766 update_time_work); 767 768 if (pqi_ctrl_offline(ctrl_info)) 769 return; 770 771 rc = pqi_write_current_time_to_host_wellness(ctrl_info); 772 if (rc) 773 dev_warn(&ctrl_info->pci_dev->dev, 774 "error updating time on controller\n"); 775 776 schedule_delayed_work(&ctrl_info->update_time_work, 777 PQI_UPDATE_TIME_WORK_INTERVAL); 778 } 779 780 static inline void pqi_schedule_update_time_worker( 781 struct pqi_ctrl_info *ctrl_info) 782 { 783 schedule_delayed_work(&ctrl_info->update_time_work, 0); 784 } 785 786 static inline void pqi_cancel_update_time_worker( 787 struct pqi_ctrl_info *ctrl_info) 788 { 789 cancel_delayed_work_sync(&ctrl_info->update_time_work); 790 } 791 792 static int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, 793 void *buffer, size_t buffer_length) 794 { 795 int rc; 796 int pci_direction; 797 struct pqi_raid_path_request request; 798 799 rc = pqi_build_raid_path_request(ctrl_info, &request, 800 cmd, RAID_CTLR_LUNID, buffer, buffer_length, 0, &pci_direction); 801 if (rc) 802 return rc; 803 804 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 805 NULL, NO_TIMEOUT); 806 807 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 808 pci_direction); 809 810 return rc; 811 } 812 813 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, 814 void **buffer) 815 { 816 int rc; 817 size_t lun_list_length; 818 size_t lun_data_length; 819 size_t new_lun_list_length; 820 void *lun_data = NULL; 821 struct report_lun_header *report_lun_header; 822 823 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL); 824 if (!report_lun_header) { 825 rc = -ENOMEM; 826 goto out; 827 } 828 829 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header, 830 sizeof(*report_lun_header)); 831 if (rc) 832 goto out; 833 834 lun_list_length = get_unaligned_be32(&report_lun_header->list_length); 835 836 again: 837 lun_data_length = sizeof(struct report_lun_header) + lun_list_length; 838 839 lun_data = kmalloc(lun_data_length, GFP_KERNEL); 840 if (!lun_data) { 841 rc = -ENOMEM; 842 goto out; 843 } 844 845 if (lun_list_length == 0) { 846 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header)); 847 goto out; 848 } 849 850 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length); 851 if (rc) 852 goto out; 853 854 new_lun_list_length = get_unaligned_be32( 855 &((struct report_lun_header *)lun_data)->list_length); 856 857 if (new_lun_list_length > lun_list_length) { 858 lun_list_length = new_lun_list_length; 859 kfree(lun_data); 860 goto again; 861 } 862 863 out: 864 kfree(report_lun_header); 865 866 if (rc) { 867 kfree(lun_data); 868 lun_data = NULL; 869 } 870 871 *buffer = lun_data; 872 873 return rc; 874 } 875 876 static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info, 877 void **buffer) 878 { 879 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS, 880 buffer); 881 } 882 883 static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info, 884 void **buffer) 885 { 886 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer); 887 } 888 889 static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info, 890 struct report_phys_lun_extended **physdev_list, 891 struct report_log_lun_extended **logdev_list) 892 { 893 int rc; 894 size_t logdev_list_length; 895 size_t logdev_data_length; 896 struct report_log_lun_extended *internal_logdev_list; 897 struct report_log_lun_extended *logdev_data; 898 struct report_lun_header report_lun_header; 899 900 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list); 901 if (rc) 902 dev_err(&ctrl_info->pci_dev->dev, 903 "report physical LUNs failed\n"); 904 905 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list); 906 if (rc) 907 dev_err(&ctrl_info->pci_dev->dev, 908 "report logical LUNs failed\n"); 909 910 /* 911 * Tack the controller itself onto the end of the logical device list. 912 */ 913 914 logdev_data = *logdev_list; 915 916 if (logdev_data) { 917 logdev_list_length = 918 get_unaligned_be32(&logdev_data->header.list_length); 919 } else { 920 memset(&report_lun_header, 0, sizeof(report_lun_header)); 921 logdev_data = 922 (struct report_log_lun_extended *)&report_lun_header; 923 logdev_list_length = 0; 924 } 925 926 logdev_data_length = sizeof(struct report_lun_header) + 927 logdev_list_length; 928 929 internal_logdev_list = kmalloc(logdev_data_length + 930 sizeof(struct report_log_lun_extended), GFP_KERNEL); 931 if (!internal_logdev_list) { 932 kfree(*logdev_list); 933 *logdev_list = NULL; 934 return -ENOMEM; 935 } 936 937 memcpy(internal_logdev_list, logdev_data, logdev_data_length); 938 memset((u8 *)internal_logdev_list + logdev_data_length, 0, 939 sizeof(struct report_log_lun_extended_entry)); 940 put_unaligned_be32(logdev_list_length + 941 sizeof(struct report_log_lun_extended_entry), 942 &internal_logdev_list->header.list_length); 943 944 kfree(*logdev_list); 945 *logdev_list = internal_logdev_list; 946 947 return 0; 948 } 949 950 static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device, 951 int bus, int target, int lun) 952 { 953 device->bus = bus; 954 device->target = target; 955 device->lun = lun; 956 } 957 958 static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device) 959 { 960 u8 *scsi3addr; 961 u32 lunid; 962 int bus; 963 int target; 964 int lun; 965 966 scsi3addr = device->scsi3addr; 967 lunid = get_unaligned_le32(scsi3addr); 968 969 if (pqi_is_hba_lunid(scsi3addr)) { 970 /* The specified device is the controller. */ 971 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff); 972 device->target_lun_valid = true; 973 return; 974 } 975 976 if (pqi_is_logical_device(device)) { 977 if (device->is_external_raid_device) { 978 bus = PQI_EXTERNAL_RAID_VOLUME_BUS; 979 target = (lunid >> 16) & 0x3fff; 980 lun = lunid & 0xff; 981 } else { 982 bus = PQI_RAID_VOLUME_BUS; 983 target = 0; 984 lun = lunid & 0x3fff; 985 } 986 pqi_set_bus_target_lun(device, bus, target, lun); 987 device->target_lun_valid = true; 988 return; 989 } 990 991 /* 992 * Defer target and LUN assignment for non-controller physical devices 993 * because the SAS transport layer will make these assignments later. 994 */ 995 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0); 996 } 997 998 static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info, 999 struct pqi_scsi_dev *device) 1000 { 1001 int rc; 1002 u8 raid_level; 1003 u8 *buffer; 1004 1005 raid_level = SA_RAID_UNKNOWN; 1006 1007 buffer = kmalloc(64, GFP_KERNEL); 1008 if (buffer) { 1009 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1010 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64); 1011 if (rc == 0) { 1012 raid_level = buffer[8]; 1013 if (raid_level > SA_RAID_MAX) 1014 raid_level = SA_RAID_UNKNOWN; 1015 } 1016 kfree(buffer); 1017 } 1018 1019 device->raid_level = raid_level; 1020 } 1021 1022 static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info, 1023 struct pqi_scsi_dev *device, struct raid_map *raid_map) 1024 { 1025 char *err_msg; 1026 u32 raid_map_size; 1027 u32 r5or6_blocks_per_row; 1028 unsigned int num_phys_disks; 1029 unsigned int num_raid_map_entries; 1030 1031 raid_map_size = get_unaligned_le32(&raid_map->structure_size); 1032 1033 if (raid_map_size < offsetof(struct raid_map, disk_data)) { 1034 err_msg = "RAID map too small"; 1035 goto bad_raid_map; 1036 } 1037 1038 if (raid_map_size > sizeof(*raid_map)) { 1039 err_msg = "RAID map too large"; 1040 goto bad_raid_map; 1041 } 1042 1043 num_phys_disks = get_unaligned_le16(&raid_map->layout_map_count) * 1044 (get_unaligned_le16(&raid_map->data_disks_per_row) + 1045 get_unaligned_le16(&raid_map->metadata_disks_per_row)); 1046 num_raid_map_entries = num_phys_disks * 1047 get_unaligned_le16(&raid_map->row_cnt); 1048 1049 if (num_raid_map_entries > RAID_MAP_MAX_ENTRIES) { 1050 err_msg = "invalid number of map entries in RAID map"; 1051 goto bad_raid_map; 1052 } 1053 1054 if (device->raid_level == SA_RAID_1) { 1055 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) { 1056 err_msg = "invalid RAID-1 map"; 1057 goto bad_raid_map; 1058 } 1059 } else if (device->raid_level == SA_RAID_ADM) { 1060 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) { 1061 err_msg = "invalid RAID-1(ADM) map"; 1062 goto bad_raid_map; 1063 } 1064 } else if ((device->raid_level == SA_RAID_5 || 1065 device->raid_level == SA_RAID_6) && 1066 get_unaligned_le16(&raid_map->layout_map_count) > 1) { 1067 /* RAID 50/60 */ 1068 r5or6_blocks_per_row = 1069 get_unaligned_le16(&raid_map->strip_size) * 1070 get_unaligned_le16(&raid_map->data_disks_per_row); 1071 if (r5or6_blocks_per_row == 0) { 1072 err_msg = "invalid RAID-5 or RAID-6 map"; 1073 goto bad_raid_map; 1074 } 1075 } 1076 1077 return 0; 1078 1079 bad_raid_map: 1080 dev_warn(&ctrl_info->pci_dev->dev, 1081 "scsi %d:%d:%d:%d %s\n", 1082 ctrl_info->scsi_host->host_no, 1083 device->bus, device->target, device->lun, err_msg); 1084 1085 return -EINVAL; 1086 } 1087 1088 static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info, 1089 struct pqi_scsi_dev *device) 1090 { 1091 int rc; 1092 int pci_direction; 1093 struct pqi_raid_path_request request; 1094 struct raid_map *raid_map; 1095 1096 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL); 1097 if (!raid_map) 1098 return -ENOMEM; 1099 1100 rc = pqi_build_raid_path_request(ctrl_info, &request, 1101 CISS_GET_RAID_MAP, device->scsi3addr, raid_map, 1102 sizeof(*raid_map), 0, &pci_direction); 1103 if (rc) 1104 goto error; 1105 1106 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 1107 NULL, NO_TIMEOUT); 1108 1109 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 1110 pci_direction); 1111 1112 if (rc) 1113 goto error; 1114 1115 rc = pqi_validate_raid_map(ctrl_info, device, raid_map); 1116 if (rc) 1117 goto error; 1118 1119 device->raid_map = raid_map; 1120 1121 return 0; 1122 1123 error: 1124 kfree(raid_map); 1125 1126 return rc; 1127 } 1128 1129 static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info, 1130 struct pqi_scsi_dev *device) 1131 { 1132 int rc; 1133 u8 *buffer; 1134 u8 bypass_status; 1135 1136 buffer = kmalloc(64, GFP_KERNEL); 1137 if (!buffer) 1138 return; 1139 1140 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1141 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64); 1142 if (rc) 1143 goto out; 1144 1145 #define RAID_BYPASS_STATUS 4 1146 #define RAID_BYPASS_CONFIGURED 0x1 1147 #define RAID_BYPASS_ENABLED 0x2 1148 1149 bypass_status = buffer[RAID_BYPASS_STATUS]; 1150 device->raid_bypass_configured = 1151 (bypass_status & RAID_BYPASS_CONFIGURED) != 0; 1152 if (device->raid_bypass_configured && 1153 (bypass_status & RAID_BYPASS_ENABLED) && 1154 pqi_get_raid_map(ctrl_info, device) == 0) 1155 device->raid_bypass_enabled = true; 1156 1157 out: 1158 kfree(buffer); 1159 } 1160 1161 /* 1162 * Use vendor-specific VPD to determine online/offline status of a volume. 1163 */ 1164 1165 static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info, 1166 struct pqi_scsi_dev *device) 1167 { 1168 int rc; 1169 size_t page_length; 1170 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE; 1171 bool volume_offline = true; 1172 u32 volume_flags; 1173 struct ciss_vpd_logical_volume_status *vpd; 1174 1175 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL); 1176 if (!vpd) 1177 goto no_buffer; 1178 1179 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1180 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd)); 1181 if (rc) 1182 goto out; 1183 1184 page_length = offsetof(struct ciss_vpd_logical_volume_status, 1185 volume_status) + vpd->page_length; 1186 if (page_length < sizeof(*vpd)) 1187 goto out; 1188 1189 volume_status = vpd->volume_status; 1190 volume_flags = get_unaligned_be32(&vpd->flags); 1191 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0; 1192 1193 out: 1194 kfree(vpd); 1195 no_buffer: 1196 device->volume_status = volume_status; 1197 device->volume_offline = volume_offline; 1198 } 1199 1200 static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info, 1201 struct pqi_scsi_dev *device) 1202 { 1203 int rc; 1204 u8 *buffer; 1205 1206 buffer = kmalloc(64, GFP_KERNEL); 1207 if (!buffer) 1208 return -ENOMEM; 1209 1210 /* Send an inquiry to the device to see what it is. */ 1211 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64); 1212 if (rc) 1213 goto out; 1214 1215 scsi_sanitize_inquiry_string(&buffer[8], 8); 1216 scsi_sanitize_inquiry_string(&buffer[16], 16); 1217 1218 device->devtype = buffer[0] & 0x1f; 1219 memcpy(device->vendor, &buffer[8], sizeof(device->vendor)); 1220 memcpy(device->model, &buffer[16], sizeof(device->model)); 1221 1222 if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK) { 1223 if (device->is_external_raid_device) { 1224 device->raid_level = SA_RAID_UNKNOWN; 1225 device->volume_status = CISS_LV_OK; 1226 device->volume_offline = false; 1227 } else { 1228 pqi_get_raid_level(ctrl_info, device); 1229 pqi_get_raid_bypass_status(ctrl_info, device); 1230 pqi_get_volume_status(ctrl_info, device); 1231 } 1232 } 1233 1234 out: 1235 kfree(buffer); 1236 1237 return rc; 1238 } 1239 1240 static void pqi_get_physical_disk_info(struct pqi_ctrl_info *ctrl_info, 1241 struct pqi_scsi_dev *device, 1242 struct bmic_identify_physical_device *id_phys) 1243 { 1244 int rc; 1245 1246 memset(id_phys, 0, sizeof(*id_phys)); 1247 1248 rc = pqi_identify_physical_device(ctrl_info, device, 1249 id_phys, sizeof(*id_phys)); 1250 if (rc) { 1251 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH; 1252 return; 1253 } 1254 1255 device->queue_depth = 1256 get_unaligned_le16(&id_phys->current_queue_depth_limit); 1257 device->device_type = id_phys->device_type; 1258 device->active_path_index = id_phys->active_path_number; 1259 device->path_map = id_phys->redundant_path_present_map; 1260 memcpy(&device->box, 1261 &id_phys->alternate_paths_phys_box_on_port, 1262 sizeof(device->box)); 1263 memcpy(&device->phys_connector, 1264 &id_phys->alternate_paths_phys_connector, 1265 sizeof(device->phys_connector)); 1266 device->bay = id_phys->phys_bay_in_box; 1267 } 1268 1269 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info, 1270 struct pqi_scsi_dev *device) 1271 { 1272 char *status; 1273 static const char unknown_state_str[] = 1274 "Volume is in an unknown state (%u)"; 1275 char unknown_state_buffer[sizeof(unknown_state_str) + 10]; 1276 1277 switch (device->volume_status) { 1278 case CISS_LV_OK: 1279 status = "Volume online"; 1280 break; 1281 case CISS_LV_FAILED: 1282 status = "Volume failed"; 1283 break; 1284 case CISS_LV_NOT_CONFIGURED: 1285 status = "Volume not configured"; 1286 break; 1287 case CISS_LV_DEGRADED: 1288 status = "Volume degraded"; 1289 break; 1290 case CISS_LV_READY_FOR_RECOVERY: 1291 status = "Volume ready for recovery operation"; 1292 break; 1293 case CISS_LV_UNDERGOING_RECOVERY: 1294 status = "Volume undergoing recovery"; 1295 break; 1296 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED: 1297 status = "Wrong physical drive was replaced"; 1298 break; 1299 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM: 1300 status = "A physical drive not properly connected"; 1301 break; 1302 case CISS_LV_HARDWARE_OVERHEATING: 1303 status = "Hardware is overheating"; 1304 break; 1305 case CISS_LV_HARDWARE_HAS_OVERHEATED: 1306 status = "Hardware has overheated"; 1307 break; 1308 case CISS_LV_UNDERGOING_EXPANSION: 1309 status = "Volume undergoing expansion"; 1310 break; 1311 case CISS_LV_NOT_AVAILABLE: 1312 status = "Volume waiting for transforming volume"; 1313 break; 1314 case CISS_LV_QUEUED_FOR_EXPANSION: 1315 status = "Volume queued for expansion"; 1316 break; 1317 case CISS_LV_DISABLED_SCSI_ID_CONFLICT: 1318 status = "Volume disabled due to SCSI ID conflict"; 1319 break; 1320 case CISS_LV_EJECTED: 1321 status = "Volume has been ejected"; 1322 break; 1323 case CISS_LV_UNDERGOING_ERASE: 1324 status = "Volume undergoing background erase"; 1325 break; 1326 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD: 1327 status = "Volume ready for predictive spare rebuild"; 1328 break; 1329 case CISS_LV_UNDERGOING_RPI: 1330 status = "Volume undergoing rapid parity initialization"; 1331 break; 1332 case CISS_LV_PENDING_RPI: 1333 status = "Volume queued for rapid parity initialization"; 1334 break; 1335 case CISS_LV_ENCRYPTED_NO_KEY: 1336 status = "Encrypted volume inaccessible - key not present"; 1337 break; 1338 case CISS_LV_UNDERGOING_ENCRYPTION: 1339 status = "Volume undergoing encryption process"; 1340 break; 1341 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING: 1342 status = "Volume undergoing encryption re-keying process"; 1343 break; 1344 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 1345 status = "Volume encrypted but encryption is disabled"; 1346 break; 1347 case CISS_LV_PENDING_ENCRYPTION: 1348 status = "Volume pending migration to encrypted state"; 1349 break; 1350 case CISS_LV_PENDING_ENCRYPTION_REKEYING: 1351 status = "Volume pending encryption rekeying"; 1352 break; 1353 case CISS_LV_NOT_SUPPORTED: 1354 status = "Volume not supported on this controller"; 1355 break; 1356 case CISS_LV_STATUS_UNAVAILABLE: 1357 status = "Volume status not available"; 1358 break; 1359 default: 1360 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer), 1361 unknown_state_str, device->volume_status); 1362 status = unknown_state_buffer; 1363 break; 1364 } 1365 1366 dev_info(&ctrl_info->pci_dev->dev, 1367 "scsi %d:%d:%d:%d %s\n", 1368 ctrl_info->scsi_host->host_no, 1369 device->bus, device->target, device->lun, status); 1370 } 1371 1372 static void pqi_rescan_worker(struct work_struct *work) 1373 { 1374 struct pqi_ctrl_info *ctrl_info; 1375 1376 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, 1377 rescan_work); 1378 1379 pqi_scan_scsi_devices(ctrl_info); 1380 } 1381 1382 static int pqi_add_device(struct pqi_ctrl_info *ctrl_info, 1383 struct pqi_scsi_dev *device) 1384 { 1385 int rc; 1386 1387 if (pqi_is_logical_device(device)) 1388 rc = scsi_add_device(ctrl_info->scsi_host, device->bus, 1389 device->target, device->lun); 1390 else 1391 rc = pqi_add_sas_device(ctrl_info->sas_host, device); 1392 1393 return rc; 1394 } 1395 1396 static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, 1397 struct pqi_scsi_dev *device) 1398 { 1399 if (pqi_is_logical_device(device)) 1400 scsi_remove_device(device->sdev); 1401 else 1402 pqi_remove_sas_device(device); 1403 } 1404 1405 /* Assumes the SCSI device list lock is held. */ 1406 1407 static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info, 1408 int bus, int target, int lun) 1409 { 1410 struct pqi_scsi_dev *device; 1411 1412 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1413 scsi_device_list_entry) 1414 if (device->bus == bus && device->target == target && 1415 device->lun == lun) 1416 return device; 1417 1418 return NULL; 1419 } 1420 1421 static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1, 1422 struct pqi_scsi_dev *dev2) 1423 { 1424 if (dev1->is_physical_device != dev2->is_physical_device) 1425 return false; 1426 1427 if (dev1->is_physical_device) 1428 return dev1->wwid == dev2->wwid; 1429 1430 return memcmp(dev1->volume_id, dev2->volume_id, 1431 sizeof(dev1->volume_id)) == 0; 1432 } 1433 1434 enum pqi_find_result { 1435 DEVICE_NOT_FOUND, 1436 DEVICE_CHANGED, 1437 DEVICE_SAME, 1438 }; 1439 1440 static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info, 1441 struct pqi_scsi_dev *device_to_find, 1442 struct pqi_scsi_dev **matching_device) 1443 { 1444 struct pqi_scsi_dev *device; 1445 1446 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1447 scsi_device_list_entry) { 1448 if (pqi_scsi3addr_equal(device_to_find->scsi3addr, 1449 device->scsi3addr)) { 1450 *matching_device = device; 1451 if (pqi_device_equal(device_to_find, device)) { 1452 if (device_to_find->volume_offline) 1453 return DEVICE_CHANGED; 1454 return DEVICE_SAME; 1455 } 1456 return DEVICE_CHANGED; 1457 } 1458 } 1459 1460 return DEVICE_NOT_FOUND; 1461 } 1462 1463 #define PQI_DEV_INFO_BUFFER_LENGTH 128 1464 1465 static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info, 1466 char *action, struct pqi_scsi_dev *device) 1467 { 1468 ssize_t count; 1469 char buffer[PQI_DEV_INFO_BUFFER_LENGTH]; 1470 1471 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH, 1472 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus); 1473 1474 if (device->target_lun_valid) 1475 count += snprintf(buffer + count, 1476 PQI_DEV_INFO_BUFFER_LENGTH - count, 1477 "%d:%d", 1478 device->target, 1479 device->lun); 1480 else 1481 count += snprintf(buffer + count, 1482 PQI_DEV_INFO_BUFFER_LENGTH - count, 1483 "-:-"); 1484 1485 if (pqi_is_logical_device(device)) 1486 count += snprintf(buffer + count, 1487 PQI_DEV_INFO_BUFFER_LENGTH - count, 1488 " %08x%08x", 1489 *((u32 *)&device->scsi3addr), 1490 *((u32 *)&device->scsi3addr[4])); 1491 else 1492 count += snprintf(buffer + count, 1493 PQI_DEV_INFO_BUFFER_LENGTH - count, 1494 " %016llx", device->sas_address); 1495 1496 count += snprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count, 1497 " %s %.8s %.16s ", 1498 scsi_device_type(device->devtype), 1499 device->vendor, 1500 device->model); 1501 1502 if (pqi_is_logical_device(device)) { 1503 if (device->devtype == TYPE_DISK) 1504 count += snprintf(buffer + count, 1505 PQI_DEV_INFO_BUFFER_LENGTH - count, 1506 "SSDSmartPathCap%c En%c %-12s", 1507 device->raid_bypass_configured ? '+' : '-', 1508 device->raid_bypass_enabled ? '+' : '-', 1509 pqi_raid_level_to_string(device->raid_level)); 1510 } else { 1511 count += snprintf(buffer + count, 1512 PQI_DEV_INFO_BUFFER_LENGTH - count, 1513 "AIO%c", device->aio_enabled ? '+' : '-'); 1514 if (device->devtype == TYPE_DISK || 1515 device->devtype == TYPE_ZBC) 1516 count += snprintf(buffer + count, 1517 PQI_DEV_INFO_BUFFER_LENGTH - count, 1518 " qd=%-6d", device->queue_depth); 1519 } 1520 1521 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer); 1522 } 1523 1524 /* Assumes the SCSI device list lock is held. */ 1525 1526 static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device, 1527 struct pqi_scsi_dev *new_device) 1528 { 1529 existing_device->devtype = new_device->devtype; 1530 existing_device->device_type = new_device->device_type; 1531 existing_device->bus = new_device->bus; 1532 if (new_device->target_lun_valid) { 1533 existing_device->target = new_device->target; 1534 existing_device->lun = new_device->lun; 1535 existing_device->target_lun_valid = true; 1536 } 1537 1538 /* By definition, the scsi3addr and wwid fields are already the same. */ 1539 1540 existing_device->is_physical_device = new_device->is_physical_device; 1541 existing_device->is_external_raid_device = 1542 new_device->is_external_raid_device; 1543 existing_device->aio_enabled = new_device->aio_enabled; 1544 memcpy(existing_device->vendor, new_device->vendor, 1545 sizeof(existing_device->vendor)); 1546 memcpy(existing_device->model, new_device->model, 1547 sizeof(existing_device->model)); 1548 existing_device->sas_address = new_device->sas_address; 1549 existing_device->raid_level = new_device->raid_level; 1550 existing_device->queue_depth = new_device->queue_depth; 1551 existing_device->aio_handle = new_device->aio_handle; 1552 existing_device->volume_status = new_device->volume_status; 1553 existing_device->active_path_index = new_device->active_path_index; 1554 existing_device->path_map = new_device->path_map; 1555 existing_device->bay = new_device->bay; 1556 memcpy(existing_device->box, new_device->box, 1557 sizeof(existing_device->box)); 1558 memcpy(existing_device->phys_connector, new_device->phys_connector, 1559 sizeof(existing_device->phys_connector)); 1560 existing_device->offload_to_mirror = 0; 1561 kfree(existing_device->raid_map); 1562 existing_device->raid_map = new_device->raid_map; 1563 existing_device->raid_bypass_configured = 1564 new_device->raid_bypass_configured; 1565 existing_device->raid_bypass_enabled = 1566 new_device->raid_bypass_enabled; 1567 1568 /* To prevent this from being freed later. */ 1569 new_device->raid_map = NULL; 1570 } 1571 1572 static inline void pqi_free_device(struct pqi_scsi_dev *device) 1573 { 1574 if (device) { 1575 kfree(device->raid_map); 1576 kfree(device); 1577 } 1578 } 1579 1580 /* 1581 * Called when exposing a new device to the OS fails in order to re-adjust 1582 * our internal SCSI device list to match the SCSI ML's view. 1583 */ 1584 1585 static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info, 1586 struct pqi_scsi_dev *device) 1587 { 1588 unsigned long flags; 1589 1590 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1591 list_del(&device->scsi_device_list_entry); 1592 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 1593 1594 /* Allow the device structure to be freed later. */ 1595 device->keep_device = false; 1596 } 1597 1598 static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info, 1599 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices) 1600 { 1601 int rc; 1602 unsigned int i; 1603 unsigned long flags; 1604 enum pqi_find_result find_result; 1605 struct pqi_scsi_dev *device; 1606 struct pqi_scsi_dev *next; 1607 struct pqi_scsi_dev *matching_device; 1608 LIST_HEAD(add_list); 1609 LIST_HEAD(delete_list); 1610 1611 /* 1612 * The idea here is to do as little work as possible while holding the 1613 * spinlock. That's why we go to great pains to defer anything other 1614 * than updating the internal device list until after we release the 1615 * spinlock. 1616 */ 1617 1618 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1619 1620 /* Assume that all devices in the existing list have gone away. */ 1621 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1622 scsi_device_list_entry) 1623 device->device_gone = true; 1624 1625 for (i = 0; i < num_new_devices; i++) { 1626 device = new_device_list[i]; 1627 1628 find_result = pqi_scsi_find_entry(ctrl_info, device, 1629 &matching_device); 1630 1631 switch (find_result) { 1632 case DEVICE_SAME: 1633 /* 1634 * The newly found device is already in the existing 1635 * device list. 1636 */ 1637 device->new_device = false; 1638 matching_device->device_gone = false; 1639 pqi_scsi_update_device(matching_device, device); 1640 break; 1641 case DEVICE_NOT_FOUND: 1642 /* 1643 * The newly found device is NOT in the existing device 1644 * list. 1645 */ 1646 device->new_device = true; 1647 break; 1648 case DEVICE_CHANGED: 1649 /* 1650 * The original device has gone away and we need to add 1651 * the new device. 1652 */ 1653 device->new_device = true; 1654 break; 1655 } 1656 } 1657 1658 /* Process all devices that have gone away. */ 1659 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list, 1660 scsi_device_list_entry) { 1661 if (device->device_gone) { 1662 list_del(&device->scsi_device_list_entry); 1663 list_add_tail(&device->delete_list_entry, &delete_list); 1664 } 1665 } 1666 1667 /* Process all new devices. */ 1668 for (i = 0; i < num_new_devices; i++) { 1669 device = new_device_list[i]; 1670 if (!device->new_device) 1671 continue; 1672 if (device->volume_offline) 1673 continue; 1674 list_add_tail(&device->scsi_device_list_entry, 1675 &ctrl_info->scsi_device_list); 1676 list_add_tail(&device->add_list_entry, &add_list); 1677 /* To prevent this device structure from being freed later. */ 1678 device->keep_device = true; 1679 } 1680 1681 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 1682 1683 /* Remove all devices that have gone away. */ 1684 list_for_each_entry_safe(device, next, &delete_list, 1685 delete_list_entry) { 1686 if (device->volume_offline) { 1687 pqi_dev_info(ctrl_info, "offline", device); 1688 pqi_show_volume_status(ctrl_info, device); 1689 } else { 1690 pqi_dev_info(ctrl_info, "removed", device); 1691 } 1692 if (device->sdev) 1693 pqi_remove_device(ctrl_info, device); 1694 list_del(&device->delete_list_entry); 1695 pqi_free_device(device); 1696 } 1697 1698 /* 1699 * Notify the SCSI ML if the queue depth of any existing device has 1700 * changed. 1701 */ 1702 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1703 scsi_device_list_entry) { 1704 if (device->sdev && device->queue_depth != 1705 device->advertised_queue_depth) { 1706 device->advertised_queue_depth = device->queue_depth; 1707 scsi_change_queue_depth(device->sdev, 1708 device->advertised_queue_depth); 1709 } 1710 } 1711 1712 /* Expose any new devices. */ 1713 list_for_each_entry_safe(device, next, &add_list, add_list_entry) { 1714 if (!device->sdev) { 1715 pqi_dev_info(ctrl_info, "added", device); 1716 rc = pqi_add_device(ctrl_info, device); 1717 if (rc) { 1718 dev_warn(&ctrl_info->pci_dev->dev, 1719 "scsi %d:%d:%d:%d addition failed, device not added\n", 1720 ctrl_info->scsi_host->host_no, 1721 device->bus, device->target, 1722 device->lun); 1723 pqi_fixup_botched_add(ctrl_info, device); 1724 } 1725 } 1726 } 1727 } 1728 1729 static bool pqi_is_supported_device(struct pqi_scsi_dev *device) 1730 { 1731 bool is_supported = false; 1732 1733 switch (device->devtype) { 1734 case TYPE_DISK: 1735 case TYPE_ZBC: 1736 case TYPE_TAPE: 1737 case TYPE_MEDIUM_CHANGER: 1738 case TYPE_ENCLOSURE: 1739 is_supported = true; 1740 break; 1741 case TYPE_RAID: 1742 /* 1743 * Only support the HBA controller itself as a RAID 1744 * controller. If it's a RAID controller other than 1745 * the HBA itself (an external RAID controller, for 1746 * example), we don't support it. 1747 */ 1748 if (pqi_is_hba_lunid(device->scsi3addr)) 1749 is_supported = true; 1750 break; 1751 } 1752 1753 return is_supported; 1754 } 1755 1756 static inline bool pqi_skip_device(u8 *scsi3addr) 1757 { 1758 /* Ignore all masked devices. */ 1759 if (MASKED_DEVICE(scsi3addr)) 1760 return true; 1761 1762 return false; 1763 } 1764 1765 static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info) 1766 { 1767 int i; 1768 int rc; 1769 LIST_HEAD(new_device_list_head); 1770 struct report_phys_lun_extended *physdev_list = NULL; 1771 struct report_log_lun_extended *logdev_list = NULL; 1772 struct report_phys_lun_extended_entry *phys_lun_ext_entry; 1773 struct report_log_lun_extended_entry *log_lun_ext_entry; 1774 struct bmic_identify_physical_device *id_phys = NULL; 1775 u32 num_physicals; 1776 u32 num_logicals; 1777 struct pqi_scsi_dev **new_device_list = NULL; 1778 struct pqi_scsi_dev *device; 1779 struct pqi_scsi_dev *next; 1780 unsigned int num_new_devices; 1781 unsigned int num_valid_devices; 1782 bool is_physical_device; 1783 u8 *scsi3addr; 1784 static char *out_of_memory_msg = 1785 "failed to allocate memory, device discovery stopped"; 1786 1787 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list); 1788 if (rc) 1789 goto out; 1790 1791 if (physdev_list) 1792 num_physicals = 1793 get_unaligned_be32(&physdev_list->header.list_length) 1794 / sizeof(physdev_list->lun_entries[0]); 1795 else 1796 num_physicals = 0; 1797 1798 if (logdev_list) 1799 num_logicals = 1800 get_unaligned_be32(&logdev_list->header.list_length) 1801 / sizeof(logdev_list->lun_entries[0]); 1802 else 1803 num_logicals = 0; 1804 1805 if (num_physicals) { 1806 /* 1807 * We need this buffer for calls to pqi_get_physical_disk_info() 1808 * below. We allocate it here instead of inside 1809 * pqi_get_physical_disk_info() because it's a fairly large 1810 * buffer. 1811 */ 1812 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL); 1813 if (!id_phys) { 1814 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 1815 out_of_memory_msg); 1816 rc = -ENOMEM; 1817 goto out; 1818 } 1819 } 1820 1821 num_new_devices = num_physicals + num_logicals; 1822 1823 new_device_list = kmalloc(sizeof(*new_device_list) * 1824 num_new_devices, GFP_KERNEL); 1825 if (!new_device_list) { 1826 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg); 1827 rc = -ENOMEM; 1828 goto out; 1829 } 1830 1831 for (i = 0; i < num_new_devices; i++) { 1832 device = kzalloc(sizeof(*device), GFP_KERNEL); 1833 if (!device) { 1834 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 1835 out_of_memory_msg); 1836 rc = -ENOMEM; 1837 goto out; 1838 } 1839 list_add_tail(&device->new_device_list_entry, 1840 &new_device_list_head); 1841 } 1842 1843 device = NULL; 1844 num_valid_devices = 0; 1845 1846 for (i = 0; i < num_new_devices; i++) { 1847 1848 if (i < num_physicals) { 1849 is_physical_device = true; 1850 phys_lun_ext_entry = &physdev_list->lun_entries[i]; 1851 log_lun_ext_entry = NULL; 1852 scsi3addr = phys_lun_ext_entry->lunid; 1853 } else { 1854 is_physical_device = false; 1855 phys_lun_ext_entry = NULL; 1856 log_lun_ext_entry = 1857 &logdev_list->lun_entries[i - num_physicals]; 1858 scsi3addr = log_lun_ext_entry->lunid; 1859 } 1860 1861 if (is_physical_device && pqi_skip_device(scsi3addr)) 1862 continue; 1863 1864 if (device) 1865 device = list_next_entry(device, new_device_list_entry); 1866 else 1867 device = list_first_entry(&new_device_list_head, 1868 struct pqi_scsi_dev, new_device_list_entry); 1869 1870 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr)); 1871 device->is_physical_device = is_physical_device; 1872 if (!is_physical_device) 1873 device->is_external_raid_device = 1874 pqi_is_external_raid_addr(scsi3addr); 1875 1876 /* Gather information about the device. */ 1877 rc = pqi_get_device_info(ctrl_info, device); 1878 if (rc == -ENOMEM) { 1879 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 1880 out_of_memory_msg); 1881 goto out; 1882 } 1883 if (rc) { 1884 if (device->is_physical_device) 1885 dev_warn(&ctrl_info->pci_dev->dev, 1886 "obtaining device info failed, skipping physical device %016llx\n", 1887 get_unaligned_be64( 1888 &phys_lun_ext_entry->wwid)); 1889 else 1890 dev_warn(&ctrl_info->pci_dev->dev, 1891 "obtaining device info failed, skipping logical device %08x%08x\n", 1892 *((u32 *)&device->scsi3addr), 1893 *((u32 *)&device->scsi3addr[4])); 1894 rc = 0; 1895 continue; 1896 } 1897 1898 if (!pqi_is_supported_device(device)) 1899 continue; 1900 1901 pqi_assign_bus_target_lun(device); 1902 1903 if (device->is_physical_device) { 1904 device->wwid = phys_lun_ext_entry->wwid; 1905 if ((phys_lun_ext_entry->device_flags & 1906 REPORT_PHYS_LUN_DEV_FLAG_AIO_ENABLED) && 1907 phys_lun_ext_entry->aio_handle) 1908 device->aio_enabled = true; 1909 } else { 1910 memcpy(device->volume_id, log_lun_ext_entry->volume_id, 1911 sizeof(device->volume_id)); 1912 } 1913 1914 switch (device->devtype) { 1915 case TYPE_DISK: 1916 case TYPE_ZBC: 1917 case TYPE_ENCLOSURE: 1918 if (device->is_physical_device) { 1919 device->sas_address = 1920 get_unaligned_be64(&device->wwid); 1921 if (device->devtype == TYPE_DISK || 1922 device->devtype == TYPE_ZBC) { 1923 device->aio_handle = 1924 phys_lun_ext_entry->aio_handle; 1925 pqi_get_physical_disk_info(ctrl_info, 1926 device, id_phys); 1927 } 1928 } 1929 break; 1930 } 1931 1932 new_device_list[num_valid_devices++] = device; 1933 } 1934 1935 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices); 1936 1937 out: 1938 list_for_each_entry_safe(device, next, &new_device_list_head, 1939 new_device_list_entry) { 1940 if (device->keep_device) 1941 continue; 1942 list_del(&device->new_device_list_entry); 1943 pqi_free_device(device); 1944 } 1945 1946 kfree(new_device_list); 1947 kfree(physdev_list); 1948 kfree(logdev_list); 1949 kfree(id_phys); 1950 1951 return rc; 1952 } 1953 1954 static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info) 1955 { 1956 unsigned long flags; 1957 struct pqi_scsi_dev *device; 1958 1959 while (1) { 1960 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1961 1962 device = list_first_entry_or_null(&ctrl_info->scsi_device_list, 1963 struct pqi_scsi_dev, scsi_device_list_entry); 1964 if (device) 1965 list_del(&device->scsi_device_list_entry); 1966 1967 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 1968 flags); 1969 1970 if (!device) 1971 break; 1972 1973 if (device->sdev) 1974 pqi_remove_device(ctrl_info, device); 1975 pqi_free_device(device); 1976 } 1977 } 1978 1979 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info) 1980 { 1981 int rc; 1982 1983 if (pqi_ctrl_offline(ctrl_info)) 1984 return -ENXIO; 1985 1986 mutex_lock(&ctrl_info->scan_mutex); 1987 1988 rc = pqi_update_scsi_devices(ctrl_info); 1989 if (rc) 1990 pqi_schedule_rescan_worker_delayed(ctrl_info); 1991 1992 mutex_unlock(&ctrl_info->scan_mutex); 1993 1994 return rc; 1995 } 1996 1997 static void pqi_scan_start(struct Scsi_Host *shost) 1998 { 1999 pqi_scan_scsi_devices(shost_to_hba(shost)); 2000 } 2001 2002 /* Returns TRUE if scan is finished. */ 2003 2004 static int pqi_scan_finished(struct Scsi_Host *shost, 2005 unsigned long elapsed_time) 2006 { 2007 struct pqi_ctrl_info *ctrl_info; 2008 2009 ctrl_info = shost_priv(shost); 2010 2011 return !mutex_is_locked(&ctrl_info->scan_mutex); 2012 } 2013 2014 static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info) 2015 { 2016 mutex_lock(&ctrl_info->scan_mutex); 2017 mutex_unlock(&ctrl_info->scan_mutex); 2018 } 2019 2020 static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info) 2021 { 2022 mutex_lock(&ctrl_info->lun_reset_mutex); 2023 mutex_unlock(&ctrl_info->lun_reset_mutex); 2024 } 2025 2026 static inline void pqi_set_encryption_info( 2027 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map, 2028 u64 first_block) 2029 { 2030 u32 volume_blk_size; 2031 2032 /* 2033 * Set the encryption tweak values based on logical block address. 2034 * If the block size is 512, the tweak value is equal to the LBA. 2035 * For other block sizes, tweak value is (LBA * block size) / 512. 2036 */ 2037 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size); 2038 if (volume_blk_size != 512) 2039 first_block = (first_block * volume_blk_size) / 512; 2040 2041 encryption_info->data_encryption_key_index = 2042 get_unaligned_le16(&raid_map->data_encryption_key_index); 2043 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block); 2044 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block); 2045 } 2046 2047 /* 2048 * Attempt to perform RAID bypass mapping for a logical volume I/O. 2049 */ 2050 2051 #define PQI_RAID_BYPASS_INELIGIBLE 1 2052 2053 static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 2054 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 2055 struct pqi_queue_group *queue_group) 2056 { 2057 struct raid_map *raid_map; 2058 bool is_write = false; 2059 u32 map_index; 2060 u64 first_block; 2061 u64 last_block; 2062 u32 block_cnt; 2063 u32 blocks_per_row; 2064 u64 first_row; 2065 u64 last_row; 2066 u32 first_row_offset; 2067 u32 last_row_offset; 2068 u32 first_column; 2069 u32 last_column; 2070 u64 r0_first_row; 2071 u64 r0_last_row; 2072 u32 r5or6_blocks_per_row; 2073 u64 r5or6_first_row; 2074 u64 r5or6_last_row; 2075 u32 r5or6_first_row_offset; 2076 u32 r5or6_last_row_offset; 2077 u32 r5or6_first_column; 2078 u32 r5or6_last_column; 2079 u16 data_disks_per_row; 2080 u32 total_disks_per_row; 2081 u16 layout_map_count; 2082 u32 stripesize; 2083 u16 strip_size; 2084 u32 first_group; 2085 u32 last_group; 2086 u32 current_group; 2087 u32 map_row; 2088 u32 aio_handle; 2089 u64 disk_block; 2090 u32 disk_block_cnt; 2091 u8 cdb[16]; 2092 u8 cdb_length; 2093 int offload_to_mirror; 2094 struct pqi_encryption_info *encryption_info_ptr; 2095 struct pqi_encryption_info encryption_info; 2096 #if BITS_PER_LONG == 32 2097 u64 tmpdiv; 2098 #endif 2099 2100 /* Check for valid opcode, get LBA and block count. */ 2101 switch (scmd->cmnd[0]) { 2102 case WRITE_6: 2103 is_write = true; 2104 /* fall through */ 2105 case READ_6: 2106 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) | 2107 (scmd->cmnd[2] << 8) | scmd->cmnd[3]); 2108 block_cnt = (u32)scmd->cmnd[4]; 2109 if (block_cnt == 0) 2110 block_cnt = 256; 2111 break; 2112 case WRITE_10: 2113 is_write = true; 2114 /* fall through */ 2115 case READ_10: 2116 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]); 2117 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]); 2118 break; 2119 case WRITE_12: 2120 is_write = true; 2121 /* fall through */ 2122 case READ_12: 2123 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]); 2124 block_cnt = get_unaligned_be32(&scmd->cmnd[6]); 2125 break; 2126 case WRITE_16: 2127 is_write = true; 2128 /* fall through */ 2129 case READ_16: 2130 first_block = get_unaligned_be64(&scmd->cmnd[2]); 2131 block_cnt = get_unaligned_be32(&scmd->cmnd[10]); 2132 break; 2133 default: 2134 /* Process via normal I/O path. */ 2135 return PQI_RAID_BYPASS_INELIGIBLE; 2136 } 2137 2138 /* Check for write to non-RAID-0. */ 2139 if (is_write && device->raid_level != SA_RAID_0) 2140 return PQI_RAID_BYPASS_INELIGIBLE; 2141 2142 if (unlikely(block_cnt == 0)) 2143 return PQI_RAID_BYPASS_INELIGIBLE; 2144 2145 last_block = first_block + block_cnt - 1; 2146 raid_map = device->raid_map; 2147 2148 /* Check for invalid block or wraparound. */ 2149 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) || 2150 last_block < first_block) 2151 return PQI_RAID_BYPASS_INELIGIBLE; 2152 2153 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row); 2154 strip_size = get_unaligned_le16(&raid_map->strip_size); 2155 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count); 2156 2157 /* Calculate stripe information for the request. */ 2158 blocks_per_row = data_disks_per_row * strip_size; 2159 #if BITS_PER_LONG == 32 2160 tmpdiv = first_block; 2161 do_div(tmpdiv, blocks_per_row); 2162 first_row = tmpdiv; 2163 tmpdiv = last_block; 2164 do_div(tmpdiv, blocks_per_row); 2165 last_row = tmpdiv; 2166 first_row_offset = (u32)(first_block - (first_row * blocks_per_row)); 2167 last_row_offset = (u32)(last_block - (last_row * blocks_per_row)); 2168 tmpdiv = first_row_offset; 2169 do_div(tmpdiv, strip_size); 2170 first_column = tmpdiv; 2171 tmpdiv = last_row_offset; 2172 do_div(tmpdiv, strip_size); 2173 last_column = tmpdiv; 2174 #else 2175 first_row = first_block / blocks_per_row; 2176 last_row = last_block / blocks_per_row; 2177 first_row_offset = (u32)(first_block - (first_row * blocks_per_row)); 2178 last_row_offset = (u32)(last_block - (last_row * blocks_per_row)); 2179 first_column = first_row_offset / strip_size; 2180 last_column = last_row_offset / strip_size; 2181 #endif 2182 2183 /* If this isn't a single row/column then give to the controller. */ 2184 if (first_row != last_row || first_column != last_column) 2185 return PQI_RAID_BYPASS_INELIGIBLE; 2186 2187 /* Proceeding with driver mapping. */ 2188 total_disks_per_row = data_disks_per_row + 2189 get_unaligned_le16(&raid_map->metadata_disks_per_row); 2190 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) % 2191 get_unaligned_le16(&raid_map->row_cnt); 2192 map_index = (map_row * total_disks_per_row) + first_column; 2193 2194 /* RAID 1 */ 2195 if (device->raid_level == SA_RAID_1) { 2196 if (device->offload_to_mirror) 2197 map_index += data_disks_per_row; 2198 device->offload_to_mirror = !device->offload_to_mirror; 2199 } else if (device->raid_level == SA_RAID_ADM) { 2200 /* RAID ADM */ 2201 /* 2202 * Handles N-way mirrors (R1-ADM) and R10 with # of drives 2203 * divisible by 3. 2204 */ 2205 offload_to_mirror = device->offload_to_mirror; 2206 if (offload_to_mirror == 0) { 2207 /* use physical disk in the first mirrored group. */ 2208 map_index %= data_disks_per_row; 2209 } else { 2210 do { 2211 /* 2212 * Determine mirror group that map_index 2213 * indicates. 2214 */ 2215 current_group = map_index / data_disks_per_row; 2216 2217 if (offload_to_mirror != current_group) { 2218 if (current_group < 2219 layout_map_count - 1) { 2220 /* 2221 * Select raid index from 2222 * next group. 2223 */ 2224 map_index += data_disks_per_row; 2225 current_group++; 2226 } else { 2227 /* 2228 * Select raid index from first 2229 * group. 2230 */ 2231 map_index %= data_disks_per_row; 2232 current_group = 0; 2233 } 2234 } 2235 } while (offload_to_mirror != current_group); 2236 } 2237 2238 /* Set mirror group to use next time. */ 2239 offload_to_mirror = 2240 (offload_to_mirror >= layout_map_count - 1) ? 2241 0 : offload_to_mirror + 1; 2242 WARN_ON(offload_to_mirror >= layout_map_count); 2243 device->offload_to_mirror = offload_to_mirror; 2244 /* 2245 * Avoid direct use of device->offload_to_mirror within this 2246 * function since multiple threads might simultaneously 2247 * increment it beyond the range of device->layout_map_count -1. 2248 */ 2249 } else if ((device->raid_level == SA_RAID_5 || 2250 device->raid_level == SA_RAID_6) && layout_map_count > 1) { 2251 /* RAID 50/60 */ 2252 /* Verify first and last block are in same RAID group */ 2253 r5or6_blocks_per_row = strip_size * data_disks_per_row; 2254 stripesize = r5or6_blocks_per_row * layout_map_count; 2255 #if BITS_PER_LONG == 32 2256 tmpdiv = first_block; 2257 first_group = do_div(tmpdiv, stripesize); 2258 tmpdiv = first_group; 2259 do_div(tmpdiv, r5or6_blocks_per_row); 2260 first_group = tmpdiv; 2261 tmpdiv = last_block; 2262 last_group = do_div(tmpdiv, stripesize); 2263 tmpdiv = last_group; 2264 do_div(tmpdiv, r5or6_blocks_per_row); 2265 last_group = tmpdiv; 2266 #else 2267 first_group = (first_block % stripesize) / r5or6_blocks_per_row; 2268 last_group = (last_block % stripesize) / r5or6_blocks_per_row; 2269 #endif 2270 if (first_group != last_group) 2271 return PQI_RAID_BYPASS_INELIGIBLE; 2272 2273 /* Verify request is in a single row of RAID 5/6 */ 2274 #if BITS_PER_LONG == 32 2275 tmpdiv = first_block; 2276 do_div(tmpdiv, stripesize); 2277 first_row = r5or6_first_row = r0_first_row = tmpdiv; 2278 tmpdiv = last_block; 2279 do_div(tmpdiv, stripesize); 2280 r5or6_last_row = r0_last_row = tmpdiv; 2281 #else 2282 first_row = r5or6_first_row = r0_first_row = 2283 first_block / stripesize; 2284 r5or6_last_row = r0_last_row = last_block / stripesize; 2285 #endif 2286 if (r5or6_first_row != r5or6_last_row) 2287 return PQI_RAID_BYPASS_INELIGIBLE; 2288 2289 /* Verify request is in a single column */ 2290 #if BITS_PER_LONG == 32 2291 tmpdiv = first_block; 2292 first_row_offset = do_div(tmpdiv, stripesize); 2293 tmpdiv = first_row_offset; 2294 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row); 2295 r5or6_first_row_offset = first_row_offset; 2296 tmpdiv = last_block; 2297 r5or6_last_row_offset = do_div(tmpdiv, stripesize); 2298 tmpdiv = r5or6_last_row_offset; 2299 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row); 2300 tmpdiv = r5or6_first_row_offset; 2301 do_div(tmpdiv, strip_size); 2302 first_column = r5or6_first_column = tmpdiv; 2303 tmpdiv = r5or6_last_row_offset; 2304 do_div(tmpdiv, strip_size); 2305 r5or6_last_column = tmpdiv; 2306 #else 2307 first_row_offset = r5or6_first_row_offset = 2308 (u32)((first_block % stripesize) % 2309 r5or6_blocks_per_row); 2310 2311 r5or6_last_row_offset = 2312 (u32)((last_block % stripesize) % 2313 r5or6_blocks_per_row); 2314 2315 first_column = r5or6_first_row_offset / strip_size; 2316 r5or6_first_column = first_column; 2317 r5or6_last_column = r5or6_last_row_offset / strip_size; 2318 #endif 2319 if (r5or6_first_column != r5or6_last_column) 2320 return PQI_RAID_BYPASS_INELIGIBLE; 2321 2322 /* Request is eligible */ 2323 map_row = 2324 ((u32)(first_row >> raid_map->parity_rotation_shift)) % 2325 get_unaligned_le16(&raid_map->row_cnt); 2326 2327 map_index = (first_group * 2328 (get_unaligned_le16(&raid_map->row_cnt) * 2329 total_disks_per_row)) + 2330 (map_row * total_disks_per_row) + first_column; 2331 } 2332 2333 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES)) 2334 return PQI_RAID_BYPASS_INELIGIBLE; 2335 2336 aio_handle = raid_map->disk_data[map_index].aio_handle; 2337 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) + 2338 first_row * strip_size + 2339 (first_row_offset - first_column * strip_size); 2340 disk_block_cnt = block_cnt; 2341 2342 /* Handle differing logical/physical block sizes. */ 2343 if (raid_map->phys_blk_shift) { 2344 disk_block <<= raid_map->phys_blk_shift; 2345 disk_block_cnt <<= raid_map->phys_blk_shift; 2346 } 2347 2348 if (unlikely(disk_block_cnt > 0xffff)) 2349 return PQI_RAID_BYPASS_INELIGIBLE; 2350 2351 /* Build the new CDB for the physical disk I/O. */ 2352 if (disk_block > 0xffffffff) { 2353 cdb[0] = is_write ? WRITE_16 : READ_16; 2354 cdb[1] = 0; 2355 put_unaligned_be64(disk_block, &cdb[2]); 2356 put_unaligned_be32(disk_block_cnt, &cdb[10]); 2357 cdb[14] = 0; 2358 cdb[15] = 0; 2359 cdb_length = 16; 2360 } else { 2361 cdb[0] = is_write ? WRITE_10 : READ_10; 2362 cdb[1] = 0; 2363 put_unaligned_be32((u32)disk_block, &cdb[2]); 2364 cdb[6] = 0; 2365 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]); 2366 cdb[9] = 0; 2367 cdb_length = 10; 2368 } 2369 2370 if (get_unaligned_le16(&raid_map->flags) & 2371 RAID_MAP_ENCRYPTION_ENABLED) { 2372 pqi_set_encryption_info(&encryption_info, raid_map, 2373 first_block); 2374 encryption_info_ptr = &encryption_info; 2375 } else { 2376 encryption_info_ptr = NULL; 2377 } 2378 2379 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle, 2380 cdb, cdb_length, queue_group, encryption_info_ptr, true); 2381 } 2382 2383 #define PQI_STATUS_IDLE 0x0 2384 2385 #define PQI_CREATE_ADMIN_QUEUE_PAIR 1 2386 #define PQI_DELETE_ADMIN_QUEUE_PAIR 2 2387 2388 #define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0 2389 #define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1 2390 #define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2 2391 #define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3 2392 #define PQI_DEVICE_STATE_ERROR 0x4 2393 2394 #define PQI_MODE_READY_TIMEOUT_SECS 30 2395 #define PQI_MODE_READY_POLL_INTERVAL_MSECS 1 2396 2397 static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info) 2398 { 2399 struct pqi_device_registers __iomem *pqi_registers; 2400 unsigned long timeout; 2401 u64 signature; 2402 u8 status; 2403 2404 pqi_registers = ctrl_info->pqi_registers; 2405 timeout = (PQI_MODE_READY_TIMEOUT_SECS * HZ) + jiffies; 2406 2407 while (1) { 2408 signature = readq(&pqi_registers->signature); 2409 if (memcmp(&signature, PQI_DEVICE_SIGNATURE, 2410 sizeof(signature)) == 0) 2411 break; 2412 if (time_after(jiffies, timeout)) { 2413 dev_err(&ctrl_info->pci_dev->dev, 2414 "timed out waiting for PQI signature\n"); 2415 return -ETIMEDOUT; 2416 } 2417 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2418 } 2419 2420 while (1) { 2421 status = readb(&pqi_registers->function_and_status_code); 2422 if (status == PQI_STATUS_IDLE) 2423 break; 2424 if (time_after(jiffies, timeout)) { 2425 dev_err(&ctrl_info->pci_dev->dev, 2426 "timed out waiting for PQI IDLE\n"); 2427 return -ETIMEDOUT; 2428 } 2429 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2430 } 2431 2432 while (1) { 2433 if (readl(&pqi_registers->device_status) == 2434 PQI_DEVICE_STATE_ALL_REGISTERS_READY) 2435 break; 2436 if (time_after(jiffies, timeout)) { 2437 dev_err(&ctrl_info->pci_dev->dev, 2438 "timed out waiting for PQI all registers ready\n"); 2439 return -ETIMEDOUT; 2440 } 2441 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2442 } 2443 2444 return 0; 2445 } 2446 2447 static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request) 2448 { 2449 struct pqi_scsi_dev *device; 2450 2451 device = io_request->scmd->device->hostdata; 2452 device->raid_bypass_enabled = false; 2453 device->aio_enabled = false; 2454 } 2455 2456 static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path) 2457 { 2458 struct pqi_ctrl_info *ctrl_info; 2459 struct pqi_scsi_dev *device; 2460 2461 device = sdev->hostdata; 2462 if (device->device_offline) 2463 return; 2464 2465 device->device_offline = true; 2466 scsi_device_set_state(sdev, SDEV_OFFLINE); 2467 ctrl_info = shost_to_hba(sdev->host); 2468 pqi_schedule_rescan_worker(ctrl_info); 2469 dev_err(&ctrl_info->pci_dev->dev, "offlined %s scsi %d:%d:%d:%d\n", 2470 path, ctrl_info->scsi_host->host_no, device->bus, 2471 device->target, device->lun); 2472 } 2473 2474 static void pqi_process_raid_io_error(struct pqi_io_request *io_request) 2475 { 2476 u8 scsi_status; 2477 u8 host_byte; 2478 struct scsi_cmnd *scmd; 2479 struct pqi_raid_error_info *error_info; 2480 size_t sense_data_length; 2481 int residual_count; 2482 int xfer_count; 2483 struct scsi_sense_hdr sshdr; 2484 2485 scmd = io_request->scmd; 2486 if (!scmd) 2487 return; 2488 2489 error_info = io_request->error_info; 2490 scsi_status = error_info->status; 2491 host_byte = DID_OK; 2492 2493 switch (error_info->data_out_result) { 2494 case PQI_DATA_IN_OUT_GOOD: 2495 break; 2496 case PQI_DATA_IN_OUT_UNDERFLOW: 2497 xfer_count = 2498 get_unaligned_le32(&error_info->data_out_transferred); 2499 residual_count = scsi_bufflen(scmd) - xfer_count; 2500 scsi_set_resid(scmd, residual_count); 2501 if (xfer_count < scmd->underflow) 2502 host_byte = DID_SOFT_ERROR; 2503 break; 2504 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 2505 case PQI_DATA_IN_OUT_ABORTED: 2506 host_byte = DID_ABORT; 2507 break; 2508 case PQI_DATA_IN_OUT_TIMEOUT: 2509 host_byte = DID_TIME_OUT; 2510 break; 2511 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 2512 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 2513 case PQI_DATA_IN_OUT_BUFFER_ERROR: 2514 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 2515 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 2516 case PQI_DATA_IN_OUT_ERROR: 2517 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 2518 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 2519 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 2520 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 2521 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 2522 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 2523 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 2524 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 2525 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 2526 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 2527 default: 2528 host_byte = DID_ERROR; 2529 break; 2530 } 2531 2532 sense_data_length = get_unaligned_le16(&error_info->sense_data_length); 2533 if (sense_data_length == 0) 2534 sense_data_length = 2535 get_unaligned_le16(&error_info->response_data_length); 2536 if (sense_data_length) { 2537 if (sense_data_length > sizeof(error_info->data)) 2538 sense_data_length = sizeof(error_info->data); 2539 2540 if (scsi_status == SAM_STAT_CHECK_CONDITION && 2541 scsi_normalize_sense(error_info->data, 2542 sense_data_length, &sshdr) && 2543 sshdr.sense_key == HARDWARE_ERROR && 2544 sshdr.asc == 0x3e && 2545 sshdr.ascq == 0x1) { 2546 pqi_take_device_offline(scmd->device, "RAID"); 2547 host_byte = DID_NO_CONNECT; 2548 } 2549 2550 if (sense_data_length > SCSI_SENSE_BUFFERSIZE) 2551 sense_data_length = SCSI_SENSE_BUFFERSIZE; 2552 memcpy(scmd->sense_buffer, error_info->data, 2553 sense_data_length); 2554 } 2555 2556 scmd->result = scsi_status; 2557 set_host_byte(scmd, host_byte); 2558 } 2559 2560 static void pqi_process_aio_io_error(struct pqi_io_request *io_request) 2561 { 2562 u8 scsi_status; 2563 u8 host_byte; 2564 struct scsi_cmnd *scmd; 2565 struct pqi_aio_error_info *error_info; 2566 size_t sense_data_length; 2567 int residual_count; 2568 int xfer_count; 2569 bool device_offline; 2570 2571 scmd = io_request->scmd; 2572 error_info = io_request->error_info; 2573 host_byte = DID_OK; 2574 sense_data_length = 0; 2575 device_offline = false; 2576 2577 switch (error_info->service_response) { 2578 case PQI_AIO_SERV_RESPONSE_COMPLETE: 2579 scsi_status = error_info->status; 2580 break; 2581 case PQI_AIO_SERV_RESPONSE_FAILURE: 2582 switch (error_info->status) { 2583 case PQI_AIO_STATUS_IO_ABORTED: 2584 scsi_status = SAM_STAT_TASK_ABORTED; 2585 break; 2586 case PQI_AIO_STATUS_UNDERRUN: 2587 scsi_status = SAM_STAT_GOOD; 2588 residual_count = get_unaligned_le32( 2589 &error_info->residual_count); 2590 scsi_set_resid(scmd, residual_count); 2591 xfer_count = scsi_bufflen(scmd) - residual_count; 2592 if (xfer_count < scmd->underflow) 2593 host_byte = DID_SOFT_ERROR; 2594 break; 2595 case PQI_AIO_STATUS_OVERRUN: 2596 scsi_status = SAM_STAT_GOOD; 2597 break; 2598 case PQI_AIO_STATUS_AIO_PATH_DISABLED: 2599 pqi_aio_path_disabled(io_request); 2600 scsi_status = SAM_STAT_GOOD; 2601 io_request->status = -EAGAIN; 2602 break; 2603 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE: 2604 case PQI_AIO_STATUS_INVALID_DEVICE: 2605 if (!io_request->raid_bypass) { 2606 device_offline = true; 2607 pqi_take_device_offline(scmd->device, "AIO"); 2608 host_byte = DID_NO_CONNECT; 2609 } 2610 scsi_status = SAM_STAT_CHECK_CONDITION; 2611 break; 2612 case PQI_AIO_STATUS_IO_ERROR: 2613 default: 2614 scsi_status = SAM_STAT_CHECK_CONDITION; 2615 break; 2616 } 2617 break; 2618 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE: 2619 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED: 2620 scsi_status = SAM_STAT_GOOD; 2621 break; 2622 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED: 2623 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN: 2624 default: 2625 scsi_status = SAM_STAT_CHECK_CONDITION; 2626 break; 2627 } 2628 2629 if (error_info->data_present) { 2630 sense_data_length = 2631 get_unaligned_le16(&error_info->data_length); 2632 if (sense_data_length) { 2633 if (sense_data_length > sizeof(error_info->data)) 2634 sense_data_length = sizeof(error_info->data); 2635 if (sense_data_length > SCSI_SENSE_BUFFERSIZE) 2636 sense_data_length = SCSI_SENSE_BUFFERSIZE; 2637 memcpy(scmd->sense_buffer, error_info->data, 2638 sense_data_length); 2639 } 2640 } 2641 2642 if (device_offline && sense_data_length == 0) 2643 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR, 2644 0x3e, 0x1); 2645 2646 scmd->result = scsi_status; 2647 set_host_byte(scmd, host_byte); 2648 } 2649 2650 static void pqi_process_io_error(unsigned int iu_type, 2651 struct pqi_io_request *io_request) 2652 { 2653 switch (iu_type) { 2654 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR: 2655 pqi_process_raid_io_error(io_request); 2656 break; 2657 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR: 2658 pqi_process_aio_io_error(io_request); 2659 break; 2660 } 2661 } 2662 2663 static int pqi_interpret_task_management_response( 2664 struct pqi_task_management_response *response) 2665 { 2666 int rc; 2667 2668 switch (response->response_code) { 2669 case SOP_TMF_COMPLETE: 2670 case SOP_TMF_FUNCTION_SUCCEEDED: 2671 rc = 0; 2672 break; 2673 default: 2674 rc = -EIO; 2675 break; 2676 } 2677 2678 return rc; 2679 } 2680 2681 static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info, 2682 struct pqi_queue_group *queue_group) 2683 { 2684 unsigned int num_responses; 2685 pqi_index_t oq_pi; 2686 pqi_index_t oq_ci; 2687 struct pqi_io_request *io_request; 2688 struct pqi_io_response *response; 2689 u16 request_id; 2690 2691 num_responses = 0; 2692 oq_ci = queue_group->oq_ci_copy; 2693 2694 while (1) { 2695 oq_pi = *queue_group->oq_pi; 2696 if (oq_pi == oq_ci) 2697 break; 2698 2699 num_responses++; 2700 response = queue_group->oq_element_array + 2701 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 2702 2703 request_id = get_unaligned_le16(&response->request_id); 2704 WARN_ON(request_id >= ctrl_info->max_io_slots); 2705 2706 io_request = &ctrl_info->io_request_pool[request_id]; 2707 WARN_ON(atomic_read(&io_request->refcount) == 0); 2708 2709 switch (response->header.iu_type) { 2710 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS: 2711 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS: 2712 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT: 2713 break; 2714 case PQI_RESPONSE_IU_TASK_MANAGEMENT: 2715 io_request->status = 2716 pqi_interpret_task_management_response( 2717 (void *)response); 2718 break; 2719 case PQI_RESPONSE_IU_AIO_PATH_DISABLED: 2720 pqi_aio_path_disabled(io_request); 2721 io_request->status = -EAGAIN; 2722 break; 2723 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR: 2724 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR: 2725 io_request->error_info = ctrl_info->error_buffer + 2726 (get_unaligned_le16(&response->error_index) * 2727 PQI_ERROR_BUFFER_ELEMENT_LENGTH); 2728 pqi_process_io_error(response->header.iu_type, 2729 io_request); 2730 break; 2731 default: 2732 dev_err(&ctrl_info->pci_dev->dev, 2733 "unexpected IU type: 0x%x\n", 2734 response->header.iu_type); 2735 break; 2736 } 2737 2738 io_request->io_complete_callback(io_request, 2739 io_request->context); 2740 2741 /* 2742 * Note that the I/O request structure CANNOT BE TOUCHED after 2743 * returning from the I/O completion callback! 2744 */ 2745 2746 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq; 2747 } 2748 2749 if (num_responses) { 2750 queue_group->oq_ci_copy = oq_ci; 2751 writel(oq_ci, queue_group->oq_ci); 2752 } 2753 2754 return num_responses; 2755 } 2756 2757 static inline unsigned int pqi_num_elements_free(unsigned int pi, 2758 unsigned int ci, unsigned int elements_in_queue) 2759 { 2760 unsigned int num_elements_used; 2761 2762 if (pi >= ci) 2763 num_elements_used = pi - ci; 2764 else 2765 num_elements_used = elements_in_queue - ci + pi; 2766 2767 return elements_in_queue - num_elements_used - 1; 2768 } 2769 2770 static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info, 2771 struct pqi_event_acknowledge_request *iu, size_t iu_length) 2772 { 2773 pqi_index_t iq_pi; 2774 pqi_index_t iq_ci; 2775 unsigned long flags; 2776 void *next_element; 2777 struct pqi_queue_group *queue_group; 2778 2779 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP]; 2780 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id); 2781 2782 while (1) { 2783 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags); 2784 2785 iq_pi = queue_group->iq_pi_copy[RAID_PATH]; 2786 iq_ci = *queue_group->iq_ci[RAID_PATH]; 2787 2788 if (pqi_num_elements_free(iq_pi, iq_ci, 2789 ctrl_info->num_elements_per_iq)) 2790 break; 2791 2792 spin_unlock_irqrestore( 2793 &queue_group->submit_lock[RAID_PATH], flags); 2794 2795 if (pqi_ctrl_offline(ctrl_info)) 2796 return; 2797 } 2798 2799 next_element = queue_group->iq_element_array[RAID_PATH] + 2800 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 2801 2802 memcpy(next_element, iu, iu_length); 2803 2804 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq; 2805 queue_group->iq_pi_copy[RAID_PATH] = iq_pi; 2806 2807 /* 2808 * This write notifies the controller that an IU is available to be 2809 * processed. 2810 */ 2811 writel(iq_pi, queue_group->iq_pi[RAID_PATH]); 2812 2813 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags); 2814 } 2815 2816 static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info, 2817 struct pqi_event *event) 2818 { 2819 struct pqi_event_acknowledge_request request; 2820 2821 memset(&request, 0, sizeof(request)); 2822 2823 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT; 2824 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 2825 &request.header.iu_length); 2826 request.event_type = event->event_type; 2827 request.event_id = event->event_id; 2828 request.additional_event_id = event->additional_event_id; 2829 2830 pqi_send_event_ack(ctrl_info, &request, sizeof(request)); 2831 } 2832 2833 static void pqi_event_worker(struct work_struct *work) 2834 { 2835 unsigned int i; 2836 struct pqi_ctrl_info *ctrl_info; 2837 struct pqi_event *event; 2838 2839 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work); 2840 2841 pqi_ctrl_busy(ctrl_info); 2842 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT); 2843 if (pqi_ctrl_offline(ctrl_info)) 2844 goto out; 2845 2846 pqi_schedule_rescan_worker_delayed(ctrl_info); 2847 2848 event = ctrl_info->events; 2849 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) { 2850 if (event->pending) { 2851 event->pending = false; 2852 pqi_acknowledge_event(ctrl_info, event); 2853 } 2854 event++; 2855 } 2856 2857 out: 2858 pqi_ctrl_unbusy(ctrl_info); 2859 } 2860 2861 #define PQI_HEARTBEAT_TIMER_INTERVAL (10 * HZ) 2862 2863 static void pqi_heartbeat_timer_handler(unsigned long data) 2864 { 2865 int num_interrupts; 2866 u32 heartbeat_count; 2867 struct pqi_ctrl_info *ctrl_info = (struct pqi_ctrl_info *)data; 2868 2869 pqi_check_ctrl_health(ctrl_info); 2870 if (pqi_ctrl_offline(ctrl_info)) 2871 return; 2872 2873 num_interrupts = atomic_read(&ctrl_info->num_interrupts); 2874 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info); 2875 2876 if (num_interrupts == ctrl_info->previous_num_interrupts) { 2877 if (heartbeat_count == ctrl_info->previous_heartbeat_count) { 2878 dev_err(&ctrl_info->pci_dev->dev, 2879 "no heartbeat detected - last heartbeat count: %u\n", 2880 heartbeat_count); 2881 pqi_take_ctrl_offline(ctrl_info); 2882 return; 2883 } 2884 } else { 2885 ctrl_info->previous_num_interrupts = num_interrupts; 2886 } 2887 2888 ctrl_info->previous_heartbeat_count = heartbeat_count; 2889 mod_timer(&ctrl_info->heartbeat_timer, 2890 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL); 2891 } 2892 2893 static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) 2894 { 2895 if (!ctrl_info->heartbeat_counter) 2896 return; 2897 2898 ctrl_info->previous_num_interrupts = 2899 atomic_read(&ctrl_info->num_interrupts); 2900 ctrl_info->previous_heartbeat_count = 2901 pqi_read_heartbeat_counter(ctrl_info); 2902 2903 ctrl_info->heartbeat_timer.expires = 2904 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL; 2905 ctrl_info->heartbeat_timer.data = (unsigned long)ctrl_info; 2906 ctrl_info->heartbeat_timer.function = pqi_heartbeat_timer_handler; 2907 add_timer(&ctrl_info->heartbeat_timer); 2908 } 2909 2910 static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) 2911 { 2912 del_timer_sync(&ctrl_info->heartbeat_timer); 2913 } 2914 2915 static inline int pqi_event_type_to_event_index(unsigned int event_type) 2916 { 2917 int index; 2918 2919 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++) 2920 if (event_type == pqi_supported_event_types[index]) 2921 return index; 2922 2923 return -1; 2924 } 2925 2926 static inline bool pqi_is_supported_event(unsigned int event_type) 2927 { 2928 return pqi_event_type_to_event_index(event_type) != -1; 2929 } 2930 2931 static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info) 2932 { 2933 unsigned int num_events; 2934 pqi_index_t oq_pi; 2935 pqi_index_t oq_ci; 2936 struct pqi_event_queue *event_queue; 2937 struct pqi_event_response *response; 2938 struct pqi_event *event; 2939 int event_index; 2940 2941 event_queue = &ctrl_info->event_queue; 2942 num_events = 0; 2943 oq_ci = event_queue->oq_ci_copy; 2944 2945 while (1) { 2946 oq_pi = *event_queue->oq_pi; 2947 if (oq_pi == oq_ci) 2948 break; 2949 2950 num_events++; 2951 response = event_queue->oq_element_array + 2952 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH); 2953 2954 event_index = 2955 pqi_event_type_to_event_index(response->event_type); 2956 2957 if (event_index >= 0) { 2958 if (response->request_acknowlege) { 2959 event = &ctrl_info->events[event_index]; 2960 event->pending = true; 2961 event->event_type = response->event_type; 2962 event->event_id = response->event_id; 2963 event->additional_event_id = 2964 response->additional_event_id; 2965 } 2966 } 2967 2968 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS; 2969 } 2970 2971 if (num_events) { 2972 event_queue->oq_ci_copy = oq_ci; 2973 writel(oq_ci, event_queue->oq_ci); 2974 schedule_work(&ctrl_info->event_work); 2975 } 2976 2977 return num_events; 2978 } 2979 2980 #define PQI_LEGACY_INTX_MASK 0x1 2981 2982 static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, 2983 bool enable_intx) 2984 { 2985 u32 intx_mask; 2986 struct pqi_device_registers __iomem *pqi_registers; 2987 volatile void __iomem *register_addr; 2988 2989 pqi_registers = ctrl_info->pqi_registers; 2990 2991 if (enable_intx) 2992 register_addr = &pqi_registers->legacy_intx_mask_clear; 2993 else 2994 register_addr = &pqi_registers->legacy_intx_mask_set; 2995 2996 intx_mask = readl(register_addr); 2997 intx_mask |= PQI_LEGACY_INTX_MASK; 2998 writel(intx_mask, register_addr); 2999 } 3000 3001 static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info, 3002 enum pqi_irq_mode new_mode) 3003 { 3004 switch (ctrl_info->irq_mode) { 3005 case IRQ_MODE_MSIX: 3006 switch (new_mode) { 3007 case IRQ_MODE_MSIX: 3008 break; 3009 case IRQ_MODE_INTX: 3010 pqi_configure_legacy_intx(ctrl_info, true); 3011 sis_enable_intx(ctrl_info); 3012 break; 3013 case IRQ_MODE_NONE: 3014 break; 3015 } 3016 break; 3017 case IRQ_MODE_INTX: 3018 switch (new_mode) { 3019 case IRQ_MODE_MSIX: 3020 pqi_configure_legacy_intx(ctrl_info, false); 3021 sis_enable_msix(ctrl_info); 3022 break; 3023 case IRQ_MODE_INTX: 3024 break; 3025 case IRQ_MODE_NONE: 3026 pqi_configure_legacy_intx(ctrl_info, false); 3027 break; 3028 } 3029 break; 3030 case IRQ_MODE_NONE: 3031 switch (new_mode) { 3032 case IRQ_MODE_MSIX: 3033 sis_enable_msix(ctrl_info); 3034 break; 3035 case IRQ_MODE_INTX: 3036 pqi_configure_legacy_intx(ctrl_info, true); 3037 sis_enable_intx(ctrl_info); 3038 break; 3039 case IRQ_MODE_NONE: 3040 break; 3041 } 3042 break; 3043 } 3044 3045 ctrl_info->irq_mode = new_mode; 3046 } 3047 3048 #define PQI_LEGACY_INTX_PENDING 0x1 3049 3050 static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info) 3051 { 3052 bool valid_irq; 3053 u32 intx_status; 3054 3055 switch (ctrl_info->irq_mode) { 3056 case IRQ_MODE_MSIX: 3057 valid_irq = true; 3058 break; 3059 case IRQ_MODE_INTX: 3060 intx_status = 3061 readl(&ctrl_info->pqi_registers->legacy_intx_status); 3062 if (intx_status & PQI_LEGACY_INTX_PENDING) 3063 valid_irq = true; 3064 else 3065 valid_irq = false; 3066 break; 3067 case IRQ_MODE_NONE: 3068 default: 3069 valid_irq = false; 3070 break; 3071 } 3072 3073 return valid_irq; 3074 } 3075 3076 static irqreturn_t pqi_irq_handler(int irq, void *data) 3077 { 3078 struct pqi_ctrl_info *ctrl_info; 3079 struct pqi_queue_group *queue_group; 3080 unsigned int num_responses_handled; 3081 3082 queue_group = data; 3083 ctrl_info = queue_group->ctrl_info; 3084 3085 if (!pqi_is_valid_irq(ctrl_info)) 3086 return IRQ_NONE; 3087 3088 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group); 3089 3090 if (irq == ctrl_info->event_irq) 3091 num_responses_handled += pqi_process_event_intr(ctrl_info); 3092 3093 if (num_responses_handled) 3094 atomic_inc(&ctrl_info->num_interrupts); 3095 3096 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL); 3097 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL); 3098 3099 return IRQ_HANDLED; 3100 } 3101 3102 static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info) 3103 { 3104 struct pci_dev *pci_dev = ctrl_info->pci_dev; 3105 int i; 3106 int rc; 3107 3108 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0); 3109 3110 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) { 3111 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0, 3112 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]); 3113 if (rc) { 3114 dev_err(&pci_dev->dev, 3115 "irq %u init failed with error %d\n", 3116 pci_irq_vector(pci_dev, i), rc); 3117 return rc; 3118 } 3119 ctrl_info->num_msix_vectors_initialized++; 3120 } 3121 3122 return 0; 3123 } 3124 3125 static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info) 3126 { 3127 int i; 3128 3129 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++) 3130 free_irq(pci_irq_vector(ctrl_info->pci_dev, i), 3131 &ctrl_info->queue_groups[i]); 3132 3133 ctrl_info->num_msix_vectors_initialized = 0; 3134 } 3135 3136 static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info) 3137 { 3138 int num_vectors_enabled; 3139 3140 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev, 3141 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups, 3142 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); 3143 if (num_vectors_enabled < 0) { 3144 dev_err(&ctrl_info->pci_dev->dev, 3145 "MSI-X init failed with error %d\n", 3146 num_vectors_enabled); 3147 return num_vectors_enabled; 3148 } 3149 3150 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled; 3151 ctrl_info->irq_mode = IRQ_MODE_MSIX; 3152 return 0; 3153 } 3154 3155 static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info) 3156 { 3157 if (ctrl_info->num_msix_vectors_enabled) { 3158 pci_free_irq_vectors(ctrl_info->pci_dev); 3159 ctrl_info->num_msix_vectors_enabled = 0; 3160 } 3161 } 3162 3163 static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info) 3164 { 3165 unsigned int i; 3166 size_t alloc_length; 3167 size_t element_array_length_per_iq; 3168 size_t element_array_length_per_oq; 3169 void *element_array; 3170 void *next_queue_index; 3171 void *aligned_pointer; 3172 unsigned int num_inbound_queues; 3173 unsigned int num_outbound_queues; 3174 unsigned int num_queue_indexes; 3175 struct pqi_queue_group *queue_group; 3176 3177 element_array_length_per_iq = 3178 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH * 3179 ctrl_info->num_elements_per_iq; 3180 element_array_length_per_oq = 3181 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH * 3182 ctrl_info->num_elements_per_oq; 3183 num_inbound_queues = ctrl_info->num_queue_groups * 2; 3184 num_outbound_queues = ctrl_info->num_queue_groups; 3185 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1; 3186 3187 aligned_pointer = NULL; 3188 3189 for (i = 0; i < num_inbound_queues; i++) { 3190 aligned_pointer = PTR_ALIGN(aligned_pointer, 3191 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3192 aligned_pointer += element_array_length_per_iq; 3193 } 3194 3195 for (i = 0; i < num_outbound_queues; i++) { 3196 aligned_pointer = PTR_ALIGN(aligned_pointer, 3197 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3198 aligned_pointer += element_array_length_per_oq; 3199 } 3200 3201 aligned_pointer = PTR_ALIGN(aligned_pointer, 3202 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3203 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS * 3204 PQI_EVENT_OQ_ELEMENT_LENGTH; 3205 3206 for (i = 0; i < num_queue_indexes; i++) { 3207 aligned_pointer = PTR_ALIGN(aligned_pointer, 3208 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3209 aligned_pointer += sizeof(pqi_index_t); 3210 } 3211 3212 alloc_length = (size_t)aligned_pointer + 3213 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT; 3214 3215 alloc_length += PQI_EXTRA_SGL_MEMORY; 3216 3217 ctrl_info->queue_memory_base = 3218 dma_zalloc_coherent(&ctrl_info->pci_dev->dev, 3219 alloc_length, 3220 &ctrl_info->queue_memory_base_dma_handle, GFP_KERNEL); 3221 3222 if (!ctrl_info->queue_memory_base) 3223 return -ENOMEM; 3224 3225 ctrl_info->queue_memory_length = alloc_length; 3226 3227 element_array = PTR_ALIGN(ctrl_info->queue_memory_base, 3228 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3229 3230 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3231 queue_group = &ctrl_info->queue_groups[i]; 3232 queue_group->iq_element_array[RAID_PATH] = element_array; 3233 queue_group->iq_element_array_bus_addr[RAID_PATH] = 3234 ctrl_info->queue_memory_base_dma_handle + 3235 (element_array - ctrl_info->queue_memory_base); 3236 element_array += element_array_length_per_iq; 3237 element_array = PTR_ALIGN(element_array, 3238 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3239 queue_group->iq_element_array[AIO_PATH] = element_array; 3240 queue_group->iq_element_array_bus_addr[AIO_PATH] = 3241 ctrl_info->queue_memory_base_dma_handle + 3242 (element_array - ctrl_info->queue_memory_base); 3243 element_array += element_array_length_per_iq; 3244 element_array = PTR_ALIGN(element_array, 3245 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3246 } 3247 3248 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3249 queue_group = &ctrl_info->queue_groups[i]; 3250 queue_group->oq_element_array = element_array; 3251 queue_group->oq_element_array_bus_addr = 3252 ctrl_info->queue_memory_base_dma_handle + 3253 (element_array - ctrl_info->queue_memory_base); 3254 element_array += element_array_length_per_oq; 3255 element_array = PTR_ALIGN(element_array, 3256 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3257 } 3258 3259 ctrl_info->event_queue.oq_element_array = element_array; 3260 ctrl_info->event_queue.oq_element_array_bus_addr = 3261 ctrl_info->queue_memory_base_dma_handle + 3262 (element_array - ctrl_info->queue_memory_base); 3263 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS * 3264 PQI_EVENT_OQ_ELEMENT_LENGTH; 3265 3266 next_queue_index = PTR_ALIGN(element_array, 3267 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3268 3269 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3270 queue_group = &ctrl_info->queue_groups[i]; 3271 queue_group->iq_ci[RAID_PATH] = next_queue_index; 3272 queue_group->iq_ci_bus_addr[RAID_PATH] = 3273 ctrl_info->queue_memory_base_dma_handle + 3274 (next_queue_index - ctrl_info->queue_memory_base); 3275 next_queue_index += sizeof(pqi_index_t); 3276 next_queue_index = PTR_ALIGN(next_queue_index, 3277 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3278 queue_group->iq_ci[AIO_PATH] = next_queue_index; 3279 queue_group->iq_ci_bus_addr[AIO_PATH] = 3280 ctrl_info->queue_memory_base_dma_handle + 3281 (next_queue_index - ctrl_info->queue_memory_base); 3282 next_queue_index += sizeof(pqi_index_t); 3283 next_queue_index = PTR_ALIGN(next_queue_index, 3284 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3285 queue_group->oq_pi = next_queue_index; 3286 queue_group->oq_pi_bus_addr = 3287 ctrl_info->queue_memory_base_dma_handle + 3288 (next_queue_index - ctrl_info->queue_memory_base); 3289 next_queue_index += sizeof(pqi_index_t); 3290 next_queue_index = PTR_ALIGN(next_queue_index, 3291 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3292 } 3293 3294 ctrl_info->event_queue.oq_pi = next_queue_index; 3295 ctrl_info->event_queue.oq_pi_bus_addr = 3296 ctrl_info->queue_memory_base_dma_handle + 3297 (next_queue_index - ctrl_info->queue_memory_base); 3298 3299 return 0; 3300 } 3301 3302 static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info) 3303 { 3304 unsigned int i; 3305 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID; 3306 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID; 3307 3308 /* 3309 * Initialize the backpointers to the controller structure in 3310 * each operational queue group structure. 3311 */ 3312 for (i = 0; i < ctrl_info->num_queue_groups; i++) 3313 ctrl_info->queue_groups[i].ctrl_info = ctrl_info; 3314 3315 /* 3316 * Assign IDs to all operational queues. Note that the IDs 3317 * assigned to operational IQs are independent of the IDs 3318 * assigned to operational OQs. 3319 */ 3320 ctrl_info->event_queue.oq_id = next_oq_id++; 3321 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3322 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++; 3323 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++; 3324 ctrl_info->queue_groups[i].oq_id = next_oq_id++; 3325 } 3326 3327 /* 3328 * Assign MSI-X table entry indexes to all queues. Note that the 3329 * interrupt for the event queue is shared with the first queue group. 3330 */ 3331 ctrl_info->event_queue.int_msg_num = 0; 3332 for (i = 0; i < ctrl_info->num_queue_groups; i++) 3333 ctrl_info->queue_groups[i].int_msg_num = i; 3334 3335 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3336 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]); 3337 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]); 3338 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]); 3339 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]); 3340 } 3341 } 3342 3343 static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info) 3344 { 3345 size_t alloc_length; 3346 struct pqi_admin_queues_aligned *admin_queues_aligned; 3347 struct pqi_admin_queues *admin_queues; 3348 3349 alloc_length = sizeof(struct pqi_admin_queues_aligned) + 3350 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT; 3351 3352 ctrl_info->admin_queue_memory_base = 3353 dma_zalloc_coherent(&ctrl_info->pci_dev->dev, 3354 alloc_length, 3355 &ctrl_info->admin_queue_memory_base_dma_handle, 3356 GFP_KERNEL); 3357 3358 if (!ctrl_info->admin_queue_memory_base) 3359 return -ENOMEM; 3360 3361 ctrl_info->admin_queue_memory_length = alloc_length; 3362 3363 admin_queues = &ctrl_info->admin_queues; 3364 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base, 3365 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3366 admin_queues->iq_element_array = 3367 &admin_queues_aligned->iq_element_array; 3368 admin_queues->oq_element_array = 3369 &admin_queues_aligned->oq_element_array; 3370 admin_queues->iq_ci = &admin_queues_aligned->iq_ci; 3371 admin_queues->oq_pi = &admin_queues_aligned->oq_pi; 3372 3373 admin_queues->iq_element_array_bus_addr = 3374 ctrl_info->admin_queue_memory_base_dma_handle + 3375 (admin_queues->iq_element_array - 3376 ctrl_info->admin_queue_memory_base); 3377 admin_queues->oq_element_array_bus_addr = 3378 ctrl_info->admin_queue_memory_base_dma_handle + 3379 (admin_queues->oq_element_array - 3380 ctrl_info->admin_queue_memory_base); 3381 admin_queues->iq_ci_bus_addr = 3382 ctrl_info->admin_queue_memory_base_dma_handle + 3383 ((void *)admin_queues->iq_ci - 3384 ctrl_info->admin_queue_memory_base); 3385 admin_queues->oq_pi_bus_addr = 3386 ctrl_info->admin_queue_memory_base_dma_handle + 3387 ((void *)admin_queues->oq_pi - 3388 ctrl_info->admin_queue_memory_base); 3389 3390 return 0; 3391 } 3392 3393 #define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES HZ 3394 #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1 3395 3396 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info) 3397 { 3398 struct pqi_device_registers __iomem *pqi_registers; 3399 struct pqi_admin_queues *admin_queues; 3400 unsigned long timeout; 3401 u8 status; 3402 u32 reg; 3403 3404 pqi_registers = ctrl_info->pqi_registers; 3405 admin_queues = &ctrl_info->admin_queues; 3406 3407 writeq((u64)admin_queues->iq_element_array_bus_addr, 3408 &pqi_registers->admin_iq_element_array_addr); 3409 writeq((u64)admin_queues->oq_element_array_bus_addr, 3410 &pqi_registers->admin_oq_element_array_addr); 3411 writeq((u64)admin_queues->iq_ci_bus_addr, 3412 &pqi_registers->admin_iq_ci_addr); 3413 writeq((u64)admin_queues->oq_pi_bus_addr, 3414 &pqi_registers->admin_oq_pi_addr); 3415 3416 reg = PQI_ADMIN_IQ_NUM_ELEMENTS | 3417 (PQI_ADMIN_OQ_NUM_ELEMENTS) << 8 | 3418 (admin_queues->int_msg_num << 16); 3419 writel(reg, &pqi_registers->admin_iq_num_elements); 3420 writel(PQI_CREATE_ADMIN_QUEUE_PAIR, 3421 &pqi_registers->function_and_status_code); 3422 3423 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies; 3424 while (1) { 3425 status = readb(&pqi_registers->function_and_status_code); 3426 if (status == PQI_STATUS_IDLE) 3427 break; 3428 if (time_after(jiffies, timeout)) 3429 return -ETIMEDOUT; 3430 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS); 3431 } 3432 3433 /* 3434 * The offset registers are not initialized to the correct 3435 * offsets until *after* the create admin queue pair command 3436 * completes successfully. 3437 */ 3438 admin_queues->iq_pi = ctrl_info->iomem_base + 3439 PQI_DEVICE_REGISTERS_OFFSET + 3440 readq(&pqi_registers->admin_iq_pi_offset); 3441 admin_queues->oq_ci = ctrl_info->iomem_base + 3442 PQI_DEVICE_REGISTERS_OFFSET + 3443 readq(&pqi_registers->admin_oq_ci_offset); 3444 3445 return 0; 3446 } 3447 3448 static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info, 3449 struct pqi_general_admin_request *request) 3450 { 3451 struct pqi_admin_queues *admin_queues; 3452 void *next_element; 3453 pqi_index_t iq_pi; 3454 3455 admin_queues = &ctrl_info->admin_queues; 3456 iq_pi = admin_queues->iq_pi_copy; 3457 3458 next_element = admin_queues->iq_element_array + 3459 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH); 3460 3461 memcpy(next_element, request, sizeof(*request)); 3462 3463 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS; 3464 admin_queues->iq_pi_copy = iq_pi; 3465 3466 /* 3467 * This write notifies the controller that an IU is available to be 3468 * processed. 3469 */ 3470 writel(iq_pi, admin_queues->iq_pi); 3471 } 3472 3473 #define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60 3474 3475 static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info, 3476 struct pqi_general_admin_response *response) 3477 { 3478 struct pqi_admin_queues *admin_queues; 3479 pqi_index_t oq_pi; 3480 pqi_index_t oq_ci; 3481 unsigned long timeout; 3482 3483 admin_queues = &ctrl_info->admin_queues; 3484 oq_ci = admin_queues->oq_ci_copy; 3485 3486 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * HZ) + jiffies; 3487 3488 while (1) { 3489 oq_pi = *admin_queues->oq_pi; 3490 if (oq_pi != oq_ci) 3491 break; 3492 if (time_after(jiffies, timeout)) { 3493 dev_err(&ctrl_info->pci_dev->dev, 3494 "timed out waiting for admin response\n"); 3495 return -ETIMEDOUT; 3496 } 3497 if (!sis_is_firmware_running(ctrl_info)) 3498 return -ENXIO; 3499 usleep_range(1000, 2000); 3500 } 3501 3502 memcpy(response, admin_queues->oq_element_array + 3503 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response)); 3504 3505 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS; 3506 admin_queues->oq_ci_copy = oq_ci; 3507 writel(oq_ci, admin_queues->oq_ci); 3508 3509 return 0; 3510 } 3511 3512 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, 3513 struct pqi_queue_group *queue_group, enum pqi_io_path path, 3514 struct pqi_io_request *io_request) 3515 { 3516 struct pqi_io_request *next; 3517 void *next_element; 3518 pqi_index_t iq_pi; 3519 pqi_index_t iq_ci; 3520 size_t iu_length; 3521 unsigned long flags; 3522 unsigned int num_elements_needed; 3523 unsigned int num_elements_to_end_of_queue; 3524 size_t copy_count; 3525 struct pqi_iu_header *request; 3526 3527 spin_lock_irqsave(&queue_group->submit_lock[path], flags); 3528 3529 if (io_request) { 3530 io_request->queue_group = queue_group; 3531 list_add_tail(&io_request->request_list_entry, 3532 &queue_group->request_list[path]); 3533 } 3534 3535 iq_pi = queue_group->iq_pi_copy[path]; 3536 3537 list_for_each_entry_safe(io_request, next, 3538 &queue_group->request_list[path], request_list_entry) { 3539 3540 request = io_request->iu; 3541 3542 iu_length = get_unaligned_le16(&request->iu_length) + 3543 PQI_REQUEST_HEADER_LENGTH; 3544 num_elements_needed = 3545 DIV_ROUND_UP(iu_length, 3546 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3547 3548 iq_ci = *queue_group->iq_ci[path]; 3549 3550 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci, 3551 ctrl_info->num_elements_per_iq)) 3552 break; 3553 3554 put_unaligned_le16(queue_group->oq_id, 3555 &request->response_queue_id); 3556 3557 next_element = queue_group->iq_element_array[path] + 3558 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3559 3560 num_elements_to_end_of_queue = 3561 ctrl_info->num_elements_per_iq - iq_pi; 3562 3563 if (num_elements_needed <= num_elements_to_end_of_queue) { 3564 memcpy(next_element, request, iu_length); 3565 } else { 3566 copy_count = num_elements_to_end_of_queue * 3567 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 3568 memcpy(next_element, request, copy_count); 3569 memcpy(queue_group->iq_element_array[path], 3570 (u8 *)request + copy_count, 3571 iu_length - copy_count); 3572 } 3573 3574 iq_pi = (iq_pi + num_elements_needed) % 3575 ctrl_info->num_elements_per_iq; 3576 3577 list_del(&io_request->request_list_entry); 3578 } 3579 3580 if (iq_pi != queue_group->iq_pi_copy[path]) { 3581 queue_group->iq_pi_copy[path] = iq_pi; 3582 /* 3583 * This write notifies the controller that one or more IUs are 3584 * available to be processed. 3585 */ 3586 writel(iq_pi, queue_group->iq_pi[path]); 3587 } 3588 3589 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags); 3590 } 3591 3592 #define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10 3593 3594 static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info, 3595 struct completion *wait) 3596 { 3597 int rc; 3598 3599 while (1) { 3600 if (wait_for_completion_io_timeout(wait, 3601 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) { 3602 rc = 0; 3603 break; 3604 } 3605 3606 pqi_check_ctrl_health(ctrl_info); 3607 if (pqi_ctrl_offline(ctrl_info)) { 3608 rc = -ENXIO; 3609 break; 3610 } 3611 } 3612 3613 return rc; 3614 } 3615 3616 static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request, 3617 void *context) 3618 { 3619 struct completion *waiting = context; 3620 3621 complete(waiting); 3622 } 3623 3624 static int pqi_submit_raid_request_synchronous_with_io_request( 3625 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request, 3626 unsigned long timeout_msecs) 3627 { 3628 int rc = 0; 3629 DECLARE_COMPLETION_ONSTACK(wait); 3630 3631 io_request->io_complete_callback = pqi_raid_synchronous_complete; 3632 io_request->context = &wait; 3633 3634 pqi_start_io(ctrl_info, 3635 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 3636 io_request); 3637 3638 if (timeout_msecs == NO_TIMEOUT) { 3639 pqi_wait_for_completion_io(ctrl_info, &wait); 3640 } else { 3641 if (!wait_for_completion_io_timeout(&wait, 3642 msecs_to_jiffies(timeout_msecs))) { 3643 dev_warn(&ctrl_info->pci_dev->dev, 3644 "command timed out\n"); 3645 rc = -ETIMEDOUT; 3646 } 3647 } 3648 3649 return rc; 3650 } 3651 3652 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, 3653 struct pqi_iu_header *request, unsigned int flags, 3654 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) 3655 { 3656 int rc; 3657 struct pqi_io_request *io_request; 3658 unsigned long start_jiffies; 3659 unsigned long msecs_blocked; 3660 size_t iu_length; 3661 3662 /* 3663 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value 3664 * are mutually exclusive. 3665 */ 3666 3667 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) { 3668 if (down_interruptible(&ctrl_info->sync_request_sem)) 3669 return -ERESTARTSYS; 3670 } else { 3671 if (timeout_msecs == NO_TIMEOUT) { 3672 down(&ctrl_info->sync_request_sem); 3673 } else { 3674 start_jiffies = jiffies; 3675 if (down_timeout(&ctrl_info->sync_request_sem, 3676 msecs_to_jiffies(timeout_msecs))) 3677 return -ETIMEDOUT; 3678 msecs_blocked = 3679 jiffies_to_msecs(jiffies - start_jiffies); 3680 if (msecs_blocked >= timeout_msecs) 3681 return -ETIMEDOUT; 3682 timeout_msecs -= msecs_blocked; 3683 } 3684 } 3685 3686 pqi_ctrl_busy(ctrl_info); 3687 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs); 3688 if (timeout_msecs == 0) { 3689 rc = -ETIMEDOUT; 3690 goto out; 3691 } 3692 3693 if (pqi_ctrl_offline(ctrl_info)) { 3694 rc = -ENXIO; 3695 goto out; 3696 } 3697 3698 io_request = pqi_alloc_io_request(ctrl_info); 3699 3700 put_unaligned_le16(io_request->index, 3701 &(((struct pqi_raid_path_request *)request)->request_id)); 3702 3703 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO) 3704 ((struct pqi_raid_path_request *)request)->error_index = 3705 ((struct pqi_raid_path_request *)request)->request_id; 3706 3707 iu_length = get_unaligned_le16(&request->iu_length) + 3708 PQI_REQUEST_HEADER_LENGTH; 3709 memcpy(io_request->iu, request, iu_length); 3710 3711 rc = pqi_submit_raid_request_synchronous_with_io_request(ctrl_info, 3712 io_request, timeout_msecs); 3713 3714 if (error_info) { 3715 if (io_request->error_info) 3716 memcpy(error_info, io_request->error_info, 3717 sizeof(*error_info)); 3718 else 3719 memset(error_info, 0, sizeof(*error_info)); 3720 } else if (rc == 0 && io_request->error_info) { 3721 u8 scsi_status; 3722 struct pqi_raid_error_info *raid_error_info; 3723 3724 raid_error_info = io_request->error_info; 3725 scsi_status = raid_error_info->status; 3726 3727 if (scsi_status == SAM_STAT_CHECK_CONDITION && 3728 raid_error_info->data_out_result == 3729 PQI_DATA_IN_OUT_UNDERFLOW) 3730 scsi_status = SAM_STAT_GOOD; 3731 3732 if (scsi_status != SAM_STAT_GOOD) 3733 rc = -EIO; 3734 } 3735 3736 pqi_free_io_request(io_request); 3737 3738 out: 3739 pqi_ctrl_unbusy(ctrl_info); 3740 up(&ctrl_info->sync_request_sem); 3741 3742 return rc; 3743 } 3744 3745 static int pqi_validate_admin_response( 3746 struct pqi_general_admin_response *response, u8 expected_function_code) 3747 { 3748 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN) 3749 return -EINVAL; 3750 3751 if (get_unaligned_le16(&response->header.iu_length) != 3752 PQI_GENERAL_ADMIN_IU_LENGTH) 3753 return -EINVAL; 3754 3755 if (response->function_code != expected_function_code) 3756 return -EINVAL; 3757 3758 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) 3759 return -EINVAL; 3760 3761 return 0; 3762 } 3763 3764 static int pqi_submit_admin_request_synchronous( 3765 struct pqi_ctrl_info *ctrl_info, 3766 struct pqi_general_admin_request *request, 3767 struct pqi_general_admin_response *response) 3768 { 3769 int rc; 3770 3771 pqi_submit_admin_request(ctrl_info, request); 3772 3773 rc = pqi_poll_for_admin_response(ctrl_info, response); 3774 3775 if (rc == 0) 3776 rc = pqi_validate_admin_response(response, 3777 request->function_code); 3778 3779 return rc; 3780 } 3781 3782 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info) 3783 { 3784 int rc; 3785 struct pqi_general_admin_request request; 3786 struct pqi_general_admin_response response; 3787 struct pqi_device_capability *capability; 3788 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor; 3789 3790 capability = kmalloc(sizeof(*capability), GFP_KERNEL); 3791 if (!capability) 3792 return -ENOMEM; 3793 3794 memset(&request, 0, sizeof(request)); 3795 3796 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 3797 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 3798 &request.header.iu_length); 3799 request.function_code = 3800 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY; 3801 put_unaligned_le32(sizeof(*capability), 3802 &request.data.report_device_capability.buffer_length); 3803 3804 rc = pqi_map_single(ctrl_info->pci_dev, 3805 &request.data.report_device_capability.sg_descriptor, 3806 capability, sizeof(*capability), 3807 PCI_DMA_FROMDEVICE); 3808 if (rc) 3809 goto out; 3810 3811 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 3812 &response); 3813 3814 pqi_pci_unmap(ctrl_info->pci_dev, 3815 &request.data.report_device_capability.sg_descriptor, 1, 3816 PCI_DMA_FROMDEVICE); 3817 3818 if (rc) 3819 goto out; 3820 3821 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) { 3822 rc = -EIO; 3823 goto out; 3824 } 3825 3826 ctrl_info->max_inbound_queues = 3827 get_unaligned_le16(&capability->max_inbound_queues); 3828 ctrl_info->max_elements_per_iq = 3829 get_unaligned_le16(&capability->max_elements_per_iq); 3830 ctrl_info->max_iq_element_length = 3831 get_unaligned_le16(&capability->max_iq_element_length) 3832 * 16; 3833 ctrl_info->max_outbound_queues = 3834 get_unaligned_le16(&capability->max_outbound_queues); 3835 ctrl_info->max_elements_per_oq = 3836 get_unaligned_le16(&capability->max_elements_per_oq); 3837 ctrl_info->max_oq_element_length = 3838 get_unaligned_le16(&capability->max_oq_element_length) 3839 * 16; 3840 3841 sop_iu_layer_descriptor = 3842 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP]; 3843 3844 ctrl_info->max_inbound_iu_length_per_firmware = 3845 get_unaligned_le16( 3846 &sop_iu_layer_descriptor->max_inbound_iu_length); 3847 ctrl_info->inbound_spanning_supported = 3848 sop_iu_layer_descriptor->inbound_spanning_supported; 3849 ctrl_info->outbound_spanning_supported = 3850 sop_iu_layer_descriptor->outbound_spanning_supported; 3851 3852 out: 3853 kfree(capability); 3854 3855 return rc; 3856 } 3857 3858 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info) 3859 { 3860 if (ctrl_info->max_iq_element_length < 3861 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 3862 dev_err(&ctrl_info->pci_dev->dev, 3863 "max. inbound queue element length of %d is less than the required length of %d\n", 3864 ctrl_info->max_iq_element_length, 3865 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3866 return -EINVAL; 3867 } 3868 3869 if (ctrl_info->max_oq_element_length < 3870 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) { 3871 dev_err(&ctrl_info->pci_dev->dev, 3872 "max. outbound queue element length of %d is less than the required length of %d\n", 3873 ctrl_info->max_oq_element_length, 3874 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 3875 return -EINVAL; 3876 } 3877 3878 if (ctrl_info->max_inbound_iu_length_per_firmware < 3879 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 3880 dev_err(&ctrl_info->pci_dev->dev, 3881 "max. inbound IU length of %u is less than the min. required length of %d\n", 3882 ctrl_info->max_inbound_iu_length_per_firmware, 3883 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3884 return -EINVAL; 3885 } 3886 3887 if (!ctrl_info->inbound_spanning_supported) { 3888 dev_err(&ctrl_info->pci_dev->dev, 3889 "the controller does not support inbound spanning\n"); 3890 return -EINVAL; 3891 } 3892 3893 if (ctrl_info->outbound_spanning_supported) { 3894 dev_err(&ctrl_info->pci_dev->dev, 3895 "the controller supports outbound spanning but this driver does not\n"); 3896 return -EINVAL; 3897 } 3898 3899 return 0; 3900 } 3901 3902 static int pqi_delete_operational_queue(struct pqi_ctrl_info *ctrl_info, 3903 bool inbound_queue, u16 queue_id) 3904 { 3905 struct pqi_general_admin_request request; 3906 struct pqi_general_admin_response response; 3907 3908 memset(&request, 0, sizeof(request)); 3909 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 3910 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 3911 &request.header.iu_length); 3912 if (inbound_queue) 3913 request.function_code = 3914 PQI_GENERAL_ADMIN_FUNCTION_DELETE_IQ; 3915 else 3916 request.function_code = 3917 PQI_GENERAL_ADMIN_FUNCTION_DELETE_OQ; 3918 put_unaligned_le16(queue_id, 3919 &request.data.delete_operational_queue.queue_id); 3920 3921 return pqi_submit_admin_request_synchronous(ctrl_info, &request, 3922 &response); 3923 } 3924 3925 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info) 3926 { 3927 int rc; 3928 struct pqi_event_queue *event_queue; 3929 struct pqi_general_admin_request request; 3930 struct pqi_general_admin_response response; 3931 3932 event_queue = &ctrl_info->event_queue; 3933 3934 /* 3935 * Create OQ (Outbound Queue - device to host queue) to dedicate 3936 * to events. 3937 */ 3938 memset(&request, 0, sizeof(request)); 3939 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 3940 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 3941 &request.header.iu_length); 3942 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 3943 put_unaligned_le16(event_queue->oq_id, 3944 &request.data.create_operational_oq.queue_id); 3945 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr, 3946 &request.data.create_operational_oq.element_array_addr); 3947 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr, 3948 &request.data.create_operational_oq.pi_addr); 3949 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS, 3950 &request.data.create_operational_oq.num_elements); 3951 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16, 3952 &request.data.create_operational_oq.element_length); 3953 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 3954 put_unaligned_le16(event_queue->int_msg_num, 3955 &request.data.create_operational_oq.int_msg_num); 3956 3957 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 3958 &response); 3959 if (rc) 3960 return rc; 3961 3962 event_queue->oq_ci = ctrl_info->iomem_base + 3963 PQI_DEVICE_REGISTERS_OFFSET + 3964 get_unaligned_le64( 3965 &response.data.create_operational_oq.oq_ci_offset); 3966 3967 return 0; 3968 } 3969 3970 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info, 3971 unsigned int group_number) 3972 { 3973 int rc; 3974 struct pqi_queue_group *queue_group; 3975 struct pqi_general_admin_request request; 3976 struct pqi_general_admin_response response; 3977 3978 queue_group = &ctrl_info->queue_groups[group_number]; 3979 3980 /* 3981 * Create IQ (Inbound Queue - host to device queue) for 3982 * RAID path. 3983 */ 3984 memset(&request, 0, sizeof(request)); 3985 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 3986 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 3987 &request.header.iu_length); 3988 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 3989 put_unaligned_le16(queue_group->iq_id[RAID_PATH], 3990 &request.data.create_operational_iq.queue_id); 3991 put_unaligned_le64( 3992 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH], 3993 &request.data.create_operational_iq.element_array_addr); 3994 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH], 3995 &request.data.create_operational_iq.ci_addr); 3996 put_unaligned_le16(ctrl_info->num_elements_per_iq, 3997 &request.data.create_operational_iq.num_elements); 3998 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 3999 &request.data.create_operational_iq.element_length); 4000 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4001 4002 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4003 &response); 4004 if (rc) { 4005 dev_err(&ctrl_info->pci_dev->dev, 4006 "error creating inbound RAID queue\n"); 4007 return rc; 4008 } 4009 4010 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base + 4011 PQI_DEVICE_REGISTERS_OFFSET + 4012 get_unaligned_le64( 4013 &response.data.create_operational_iq.iq_pi_offset); 4014 4015 /* 4016 * Create IQ (Inbound Queue - host to device queue) for 4017 * Advanced I/O (AIO) path. 4018 */ 4019 memset(&request, 0, sizeof(request)); 4020 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4021 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4022 &request.header.iu_length); 4023 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4024 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4025 &request.data.create_operational_iq.queue_id); 4026 put_unaligned_le64((u64)queue_group-> 4027 iq_element_array_bus_addr[AIO_PATH], 4028 &request.data.create_operational_iq.element_array_addr); 4029 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH], 4030 &request.data.create_operational_iq.ci_addr); 4031 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4032 &request.data.create_operational_iq.num_elements); 4033 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4034 &request.data.create_operational_iq.element_length); 4035 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4036 4037 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4038 &response); 4039 if (rc) { 4040 dev_err(&ctrl_info->pci_dev->dev, 4041 "error creating inbound AIO queue\n"); 4042 goto delete_inbound_queue_raid; 4043 } 4044 4045 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base + 4046 PQI_DEVICE_REGISTERS_OFFSET + 4047 get_unaligned_le64( 4048 &response.data.create_operational_iq.iq_pi_offset); 4049 4050 /* 4051 * Designate the 2nd IQ as the AIO path. By default, all IQs are 4052 * assumed to be for RAID path I/O unless we change the queue's 4053 * property. 4054 */ 4055 memset(&request, 0, sizeof(request)); 4056 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4057 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4058 &request.header.iu_length); 4059 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY; 4060 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4061 &request.data.change_operational_iq_properties.queue_id); 4062 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE, 4063 &request.data.change_operational_iq_properties.vendor_specific); 4064 4065 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4066 &response); 4067 if (rc) { 4068 dev_err(&ctrl_info->pci_dev->dev, 4069 "error changing queue property\n"); 4070 goto delete_inbound_queue_aio; 4071 } 4072 4073 /* 4074 * Create OQ (Outbound Queue - device to host queue). 4075 */ 4076 memset(&request, 0, sizeof(request)); 4077 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4078 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4079 &request.header.iu_length); 4080 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4081 put_unaligned_le16(queue_group->oq_id, 4082 &request.data.create_operational_oq.queue_id); 4083 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr, 4084 &request.data.create_operational_oq.element_array_addr); 4085 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr, 4086 &request.data.create_operational_oq.pi_addr); 4087 put_unaligned_le16(ctrl_info->num_elements_per_oq, 4088 &request.data.create_operational_oq.num_elements); 4089 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16, 4090 &request.data.create_operational_oq.element_length); 4091 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4092 put_unaligned_le16(queue_group->int_msg_num, 4093 &request.data.create_operational_oq.int_msg_num); 4094 4095 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4096 &response); 4097 if (rc) { 4098 dev_err(&ctrl_info->pci_dev->dev, 4099 "error creating outbound queue\n"); 4100 goto delete_inbound_queue_aio; 4101 } 4102 4103 queue_group->oq_ci = ctrl_info->iomem_base + 4104 PQI_DEVICE_REGISTERS_OFFSET + 4105 get_unaligned_le64( 4106 &response.data.create_operational_oq.oq_ci_offset); 4107 4108 return 0; 4109 4110 delete_inbound_queue_aio: 4111 pqi_delete_operational_queue(ctrl_info, true, 4112 queue_group->iq_id[AIO_PATH]); 4113 4114 delete_inbound_queue_raid: 4115 pqi_delete_operational_queue(ctrl_info, true, 4116 queue_group->iq_id[RAID_PATH]); 4117 4118 return rc; 4119 } 4120 4121 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info) 4122 { 4123 int rc; 4124 unsigned int i; 4125 4126 rc = pqi_create_event_queue(ctrl_info); 4127 if (rc) { 4128 dev_err(&ctrl_info->pci_dev->dev, 4129 "error creating event queue\n"); 4130 return rc; 4131 } 4132 4133 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 4134 rc = pqi_create_queue_group(ctrl_info, i); 4135 if (rc) { 4136 dev_err(&ctrl_info->pci_dev->dev, 4137 "error creating queue group number %u/%u\n", 4138 i, ctrl_info->num_queue_groups); 4139 return rc; 4140 } 4141 } 4142 4143 return 0; 4144 } 4145 4146 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \ 4147 (offsetof(struct pqi_event_config, descriptors) + \ 4148 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor))) 4149 4150 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info, 4151 bool enable_events) 4152 { 4153 int rc; 4154 unsigned int i; 4155 struct pqi_event_config *event_config; 4156 struct pqi_event_descriptor *event_descriptor; 4157 struct pqi_general_management_request request; 4158 4159 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4160 GFP_KERNEL); 4161 if (!event_config) 4162 return -ENOMEM; 4163 4164 memset(&request, 0, sizeof(request)); 4165 4166 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG; 4167 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4168 data.report_event_configuration.sg_descriptors[1]) - 4169 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4170 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4171 &request.data.report_event_configuration.buffer_length); 4172 4173 rc = pqi_map_single(ctrl_info->pci_dev, 4174 request.data.report_event_configuration.sg_descriptors, 4175 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4176 PCI_DMA_FROMDEVICE); 4177 if (rc) 4178 goto out; 4179 4180 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 4181 0, NULL, NO_TIMEOUT); 4182 4183 pqi_pci_unmap(ctrl_info->pci_dev, 4184 request.data.report_event_configuration.sg_descriptors, 1, 4185 PCI_DMA_FROMDEVICE); 4186 4187 if (rc) 4188 goto out; 4189 4190 for (i = 0; i < event_config->num_event_descriptors; i++) { 4191 event_descriptor = &event_config->descriptors[i]; 4192 if (enable_events && 4193 pqi_is_supported_event(event_descriptor->event_type)) 4194 put_unaligned_le16(ctrl_info->event_queue.oq_id, 4195 &event_descriptor->oq_id); 4196 else 4197 put_unaligned_le16(0, &event_descriptor->oq_id); 4198 } 4199 4200 memset(&request, 0, sizeof(request)); 4201 4202 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG; 4203 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4204 data.report_event_configuration.sg_descriptors[1]) - 4205 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4206 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4207 &request.data.report_event_configuration.buffer_length); 4208 4209 rc = pqi_map_single(ctrl_info->pci_dev, 4210 request.data.report_event_configuration.sg_descriptors, 4211 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4212 PCI_DMA_TODEVICE); 4213 if (rc) 4214 goto out; 4215 4216 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 4217 NULL, NO_TIMEOUT); 4218 4219 pqi_pci_unmap(ctrl_info->pci_dev, 4220 request.data.report_event_configuration.sg_descriptors, 1, 4221 PCI_DMA_TODEVICE); 4222 4223 out: 4224 kfree(event_config); 4225 4226 return rc; 4227 } 4228 4229 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info) 4230 { 4231 return pqi_configure_events(ctrl_info, true); 4232 } 4233 4234 static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info) 4235 { 4236 return pqi_configure_events(ctrl_info, false); 4237 } 4238 4239 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info) 4240 { 4241 unsigned int i; 4242 struct device *dev; 4243 size_t sg_chain_buffer_length; 4244 struct pqi_io_request *io_request; 4245 4246 if (!ctrl_info->io_request_pool) 4247 return; 4248 4249 dev = &ctrl_info->pci_dev->dev; 4250 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4251 io_request = ctrl_info->io_request_pool; 4252 4253 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4254 kfree(io_request->iu); 4255 if (!io_request->sg_chain_buffer) 4256 break; 4257 dma_free_coherent(dev, sg_chain_buffer_length, 4258 io_request->sg_chain_buffer, 4259 io_request->sg_chain_buffer_dma_handle); 4260 io_request++; 4261 } 4262 4263 kfree(ctrl_info->io_request_pool); 4264 ctrl_info->io_request_pool = NULL; 4265 } 4266 4267 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info) 4268 { 4269 ctrl_info->error_buffer = dma_zalloc_coherent(&ctrl_info->pci_dev->dev, 4270 ctrl_info->error_buffer_length, 4271 &ctrl_info->error_buffer_dma_handle, GFP_KERNEL); 4272 4273 if (!ctrl_info->error_buffer) 4274 return -ENOMEM; 4275 4276 return 0; 4277 } 4278 4279 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info) 4280 { 4281 unsigned int i; 4282 void *sg_chain_buffer; 4283 size_t sg_chain_buffer_length; 4284 dma_addr_t sg_chain_buffer_dma_handle; 4285 struct device *dev; 4286 struct pqi_io_request *io_request; 4287 4288 ctrl_info->io_request_pool = kzalloc(ctrl_info->max_io_slots * 4289 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL); 4290 4291 if (!ctrl_info->io_request_pool) { 4292 dev_err(&ctrl_info->pci_dev->dev, 4293 "failed to allocate I/O request pool\n"); 4294 goto error; 4295 } 4296 4297 dev = &ctrl_info->pci_dev->dev; 4298 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4299 io_request = ctrl_info->io_request_pool; 4300 4301 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4302 io_request->iu = 4303 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL); 4304 4305 if (!io_request->iu) { 4306 dev_err(&ctrl_info->pci_dev->dev, 4307 "failed to allocate IU buffers\n"); 4308 goto error; 4309 } 4310 4311 sg_chain_buffer = dma_alloc_coherent(dev, 4312 sg_chain_buffer_length, &sg_chain_buffer_dma_handle, 4313 GFP_KERNEL); 4314 4315 if (!sg_chain_buffer) { 4316 dev_err(&ctrl_info->pci_dev->dev, 4317 "failed to allocate PQI scatter-gather chain buffers\n"); 4318 goto error; 4319 } 4320 4321 io_request->index = i; 4322 io_request->sg_chain_buffer = sg_chain_buffer; 4323 io_request->sg_chain_buffer_dma_handle = 4324 sg_chain_buffer_dma_handle; 4325 io_request++; 4326 } 4327 4328 return 0; 4329 4330 error: 4331 pqi_free_all_io_requests(ctrl_info); 4332 4333 return -ENOMEM; 4334 } 4335 4336 /* 4337 * Calculate required resources that are sized based on max. outstanding 4338 * requests and max. transfer size. 4339 */ 4340 4341 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info) 4342 { 4343 u32 max_transfer_size; 4344 u32 max_sg_entries; 4345 4346 ctrl_info->scsi_ml_can_queue = 4347 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS; 4348 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests; 4349 4350 ctrl_info->error_buffer_length = 4351 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH; 4352 4353 if (reset_devices) 4354 max_transfer_size = min(ctrl_info->max_transfer_size, 4355 PQI_MAX_TRANSFER_SIZE_KDUMP); 4356 else 4357 max_transfer_size = min(ctrl_info->max_transfer_size, 4358 PQI_MAX_TRANSFER_SIZE); 4359 4360 max_sg_entries = max_transfer_size / PAGE_SIZE; 4361 4362 /* +1 to cover when the buffer is not page-aligned. */ 4363 max_sg_entries++; 4364 4365 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries); 4366 4367 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE; 4368 4369 ctrl_info->sg_chain_buffer_length = 4370 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) + 4371 PQI_EXTRA_SGL_MEMORY; 4372 ctrl_info->sg_tablesize = max_sg_entries; 4373 ctrl_info->max_sectors = max_transfer_size / 512; 4374 } 4375 4376 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info) 4377 { 4378 int num_queue_groups; 4379 u16 num_elements_per_iq; 4380 u16 num_elements_per_oq; 4381 4382 if (reset_devices) { 4383 num_queue_groups = 1; 4384 } else { 4385 int num_cpus; 4386 int max_queue_groups; 4387 4388 max_queue_groups = min(ctrl_info->max_inbound_queues / 2, 4389 ctrl_info->max_outbound_queues - 1); 4390 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS); 4391 4392 num_cpus = num_online_cpus(); 4393 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors); 4394 num_queue_groups = min(num_queue_groups, max_queue_groups); 4395 } 4396 4397 ctrl_info->num_queue_groups = num_queue_groups; 4398 ctrl_info->max_hw_queue_index = num_queue_groups - 1; 4399 4400 /* 4401 * Make sure that the max. inbound IU length is an even multiple 4402 * of our inbound element length. 4403 */ 4404 ctrl_info->max_inbound_iu_length = 4405 (ctrl_info->max_inbound_iu_length_per_firmware / 4406 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) * 4407 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 4408 4409 num_elements_per_iq = 4410 (ctrl_info->max_inbound_iu_length / 4411 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4412 4413 /* Add one because one element in each queue is unusable. */ 4414 num_elements_per_iq++; 4415 4416 num_elements_per_iq = min(num_elements_per_iq, 4417 ctrl_info->max_elements_per_iq); 4418 4419 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1; 4420 num_elements_per_oq = min(num_elements_per_oq, 4421 ctrl_info->max_elements_per_oq); 4422 4423 ctrl_info->num_elements_per_iq = num_elements_per_iq; 4424 ctrl_info->num_elements_per_oq = num_elements_per_oq; 4425 4426 ctrl_info->max_sg_per_iu = 4427 ((ctrl_info->max_inbound_iu_length - 4428 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) / 4429 sizeof(struct pqi_sg_descriptor)) + 4430 PQI_MAX_EMBEDDED_SG_DESCRIPTORS; 4431 } 4432 4433 static inline void pqi_set_sg_descriptor( 4434 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg) 4435 { 4436 u64 address = (u64)sg_dma_address(sg); 4437 unsigned int length = sg_dma_len(sg); 4438 4439 put_unaligned_le64(address, &sg_descriptor->address); 4440 put_unaligned_le32(length, &sg_descriptor->length); 4441 put_unaligned_le32(0, &sg_descriptor->flags); 4442 } 4443 4444 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info, 4445 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd, 4446 struct pqi_io_request *io_request) 4447 { 4448 int i; 4449 u16 iu_length; 4450 int sg_count; 4451 bool chained; 4452 unsigned int num_sg_in_iu; 4453 unsigned int max_sg_per_iu; 4454 struct scatterlist *sg; 4455 struct pqi_sg_descriptor *sg_descriptor; 4456 4457 sg_count = scsi_dma_map(scmd); 4458 if (sg_count < 0) 4459 return sg_count; 4460 4461 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 4462 PQI_REQUEST_HEADER_LENGTH; 4463 4464 if (sg_count == 0) 4465 goto out; 4466 4467 sg = scsi_sglist(scmd); 4468 sg_descriptor = request->sg_descriptors; 4469 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4470 chained = false; 4471 num_sg_in_iu = 0; 4472 i = 0; 4473 4474 while (1) { 4475 pqi_set_sg_descriptor(sg_descriptor, sg); 4476 if (!chained) 4477 num_sg_in_iu++; 4478 i++; 4479 if (i == sg_count) 4480 break; 4481 sg_descriptor++; 4482 if (i == max_sg_per_iu) { 4483 put_unaligned_le64( 4484 (u64)io_request->sg_chain_buffer_dma_handle, 4485 &sg_descriptor->address); 4486 put_unaligned_le32((sg_count - num_sg_in_iu) 4487 * sizeof(*sg_descriptor), 4488 &sg_descriptor->length); 4489 put_unaligned_le32(CISS_SG_CHAIN, 4490 &sg_descriptor->flags); 4491 chained = true; 4492 num_sg_in_iu++; 4493 sg_descriptor = io_request->sg_chain_buffer; 4494 } 4495 sg = sg_next(sg); 4496 } 4497 4498 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4499 request->partial = chained; 4500 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4501 4502 out: 4503 put_unaligned_le16(iu_length, &request->header.iu_length); 4504 4505 return 0; 4506 } 4507 4508 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info, 4509 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd, 4510 struct pqi_io_request *io_request) 4511 { 4512 int i; 4513 u16 iu_length; 4514 int sg_count; 4515 bool chained; 4516 unsigned int num_sg_in_iu; 4517 unsigned int max_sg_per_iu; 4518 struct scatterlist *sg; 4519 struct pqi_sg_descriptor *sg_descriptor; 4520 4521 sg_count = scsi_dma_map(scmd); 4522 if (sg_count < 0) 4523 return sg_count; 4524 4525 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) - 4526 PQI_REQUEST_HEADER_LENGTH; 4527 num_sg_in_iu = 0; 4528 4529 if (sg_count == 0) 4530 goto out; 4531 4532 sg = scsi_sglist(scmd); 4533 sg_descriptor = request->sg_descriptors; 4534 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4535 chained = false; 4536 i = 0; 4537 4538 while (1) { 4539 pqi_set_sg_descriptor(sg_descriptor, sg); 4540 if (!chained) 4541 num_sg_in_iu++; 4542 i++; 4543 if (i == sg_count) 4544 break; 4545 sg_descriptor++; 4546 if (i == max_sg_per_iu) { 4547 put_unaligned_le64( 4548 (u64)io_request->sg_chain_buffer_dma_handle, 4549 &sg_descriptor->address); 4550 put_unaligned_le32((sg_count - num_sg_in_iu) 4551 * sizeof(*sg_descriptor), 4552 &sg_descriptor->length); 4553 put_unaligned_le32(CISS_SG_CHAIN, 4554 &sg_descriptor->flags); 4555 chained = true; 4556 num_sg_in_iu++; 4557 sg_descriptor = io_request->sg_chain_buffer; 4558 } 4559 sg = sg_next(sg); 4560 } 4561 4562 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4563 request->partial = chained; 4564 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4565 4566 out: 4567 put_unaligned_le16(iu_length, &request->header.iu_length); 4568 request->num_sg_descriptors = num_sg_in_iu; 4569 4570 return 0; 4571 } 4572 4573 static void pqi_raid_io_complete(struct pqi_io_request *io_request, 4574 void *context) 4575 { 4576 struct scsi_cmnd *scmd; 4577 4578 scmd = io_request->scmd; 4579 pqi_free_io_request(io_request); 4580 scsi_dma_unmap(scmd); 4581 pqi_scsi_done(scmd); 4582 } 4583 4584 static int pqi_raid_submit_scsi_cmd_with_io_request( 4585 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request, 4586 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 4587 struct pqi_queue_group *queue_group) 4588 { 4589 int rc; 4590 size_t cdb_length; 4591 struct pqi_raid_path_request *request; 4592 4593 io_request->io_complete_callback = pqi_raid_io_complete; 4594 io_request->scmd = scmd; 4595 4596 request = io_request->iu; 4597 memset(request, 0, 4598 offsetof(struct pqi_raid_path_request, sg_descriptors)); 4599 4600 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 4601 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 4602 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 4603 put_unaligned_le16(io_request->index, &request->request_id); 4604 request->error_index = request->request_id; 4605 memcpy(request->lun_number, device->scsi3addr, 4606 sizeof(request->lun_number)); 4607 4608 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb)); 4609 memcpy(request->cdb, scmd->cmnd, cdb_length); 4610 4611 switch (cdb_length) { 4612 case 6: 4613 case 10: 4614 case 12: 4615 case 16: 4616 /* No bytes in the Additional CDB bytes field */ 4617 request->additional_cdb_bytes_usage = 4618 SOP_ADDITIONAL_CDB_BYTES_0; 4619 break; 4620 case 20: 4621 /* 4 bytes in the Additional cdb field */ 4622 request->additional_cdb_bytes_usage = 4623 SOP_ADDITIONAL_CDB_BYTES_4; 4624 break; 4625 case 24: 4626 /* 8 bytes in the Additional cdb field */ 4627 request->additional_cdb_bytes_usage = 4628 SOP_ADDITIONAL_CDB_BYTES_8; 4629 break; 4630 case 28: 4631 /* 12 bytes in the Additional cdb field */ 4632 request->additional_cdb_bytes_usage = 4633 SOP_ADDITIONAL_CDB_BYTES_12; 4634 break; 4635 case 32: 4636 default: 4637 /* 16 bytes in the Additional cdb field */ 4638 request->additional_cdb_bytes_usage = 4639 SOP_ADDITIONAL_CDB_BYTES_16; 4640 break; 4641 } 4642 4643 switch (scmd->sc_data_direction) { 4644 case DMA_TO_DEVICE: 4645 request->data_direction = SOP_READ_FLAG; 4646 break; 4647 case DMA_FROM_DEVICE: 4648 request->data_direction = SOP_WRITE_FLAG; 4649 break; 4650 case DMA_NONE: 4651 request->data_direction = SOP_NO_DIRECTION_FLAG; 4652 break; 4653 case DMA_BIDIRECTIONAL: 4654 request->data_direction = SOP_BIDIRECTIONAL; 4655 break; 4656 default: 4657 dev_err(&ctrl_info->pci_dev->dev, 4658 "unknown data direction: %d\n", 4659 scmd->sc_data_direction); 4660 break; 4661 } 4662 4663 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request); 4664 if (rc) { 4665 pqi_free_io_request(io_request); 4666 return SCSI_MLQUEUE_HOST_BUSY; 4667 } 4668 4669 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request); 4670 4671 return 0; 4672 } 4673 4674 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 4675 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 4676 struct pqi_queue_group *queue_group) 4677 { 4678 struct pqi_io_request *io_request; 4679 4680 io_request = pqi_alloc_io_request(ctrl_info); 4681 4682 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 4683 device, scmd, queue_group); 4684 } 4685 4686 static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info) 4687 { 4688 if (!pqi_ctrl_blocked(ctrl_info)) 4689 schedule_work(&ctrl_info->raid_bypass_retry_work); 4690 } 4691 4692 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request) 4693 { 4694 struct scsi_cmnd *scmd; 4695 struct pqi_scsi_dev *device; 4696 struct pqi_ctrl_info *ctrl_info; 4697 4698 if (!io_request->raid_bypass) 4699 return false; 4700 4701 scmd = io_request->scmd; 4702 if ((scmd->result & 0xff) == SAM_STAT_GOOD) 4703 return false; 4704 if (host_byte(scmd->result) == DID_NO_CONNECT) 4705 return false; 4706 4707 device = scmd->device->hostdata; 4708 if (pqi_device_offline(device)) 4709 return false; 4710 4711 ctrl_info = shost_to_hba(scmd->device->host); 4712 if (pqi_ctrl_offline(ctrl_info)) 4713 return false; 4714 4715 return true; 4716 } 4717 4718 static inline void pqi_add_to_raid_bypass_retry_list( 4719 struct pqi_ctrl_info *ctrl_info, 4720 struct pqi_io_request *io_request, bool at_head) 4721 { 4722 unsigned long flags; 4723 4724 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 4725 if (at_head) 4726 list_add(&io_request->request_list_entry, 4727 &ctrl_info->raid_bypass_retry_list); 4728 else 4729 list_add_tail(&io_request->request_list_entry, 4730 &ctrl_info->raid_bypass_retry_list); 4731 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 4732 } 4733 4734 static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request, 4735 void *context) 4736 { 4737 struct scsi_cmnd *scmd; 4738 4739 scmd = io_request->scmd; 4740 pqi_free_io_request(io_request); 4741 pqi_scsi_done(scmd); 4742 } 4743 4744 static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request) 4745 { 4746 struct scsi_cmnd *scmd; 4747 struct pqi_ctrl_info *ctrl_info; 4748 4749 io_request->io_complete_callback = pqi_queued_raid_bypass_complete; 4750 scmd = io_request->scmd; 4751 scmd->result = 0; 4752 ctrl_info = shost_to_hba(scmd->device->host); 4753 4754 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false); 4755 pqi_schedule_bypass_retry(ctrl_info); 4756 } 4757 4758 static int pqi_retry_raid_bypass(struct pqi_io_request *io_request) 4759 { 4760 struct scsi_cmnd *scmd; 4761 struct pqi_scsi_dev *device; 4762 struct pqi_ctrl_info *ctrl_info; 4763 struct pqi_queue_group *queue_group; 4764 4765 scmd = io_request->scmd; 4766 device = scmd->device->hostdata; 4767 if (pqi_device_in_reset(device)) { 4768 pqi_free_io_request(io_request); 4769 set_host_byte(scmd, DID_RESET); 4770 pqi_scsi_done(scmd); 4771 return 0; 4772 } 4773 4774 ctrl_info = shost_to_hba(scmd->device->host); 4775 queue_group = io_request->queue_group; 4776 4777 pqi_reinit_io_request(io_request); 4778 4779 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 4780 device, scmd, queue_group); 4781 } 4782 4783 static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request( 4784 struct pqi_ctrl_info *ctrl_info) 4785 { 4786 unsigned long flags; 4787 struct pqi_io_request *io_request; 4788 4789 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 4790 io_request = list_first_entry_or_null( 4791 &ctrl_info->raid_bypass_retry_list, 4792 struct pqi_io_request, request_list_entry); 4793 if (io_request) 4794 list_del(&io_request->request_list_entry); 4795 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 4796 4797 return io_request; 4798 } 4799 4800 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info) 4801 { 4802 int rc; 4803 struct pqi_io_request *io_request; 4804 4805 pqi_ctrl_busy(ctrl_info); 4806 4807 while (1) { 4808 if (pqi_ctrl_blocked(ctrl_info)) 4809 break; 4810 io_request = pqi_next_queued_raid_bypass_request(ctrl_info); 4811 if (!io_request) 4812 break; 4813 rc = pqi_retry_raid_bypass(io_request); 4814 if (rc) { 4815 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, 4816 true); 4817 pqi_schedule_bypass_retry(ctrl_info); 4818 break; 4819 } 4820 } 4821 4822 pqi_ctrl_unbusy(ctrl_info); 4823 } 4824 4825 static void pqi_raid_bypass_retry_worker(struct work_struct *work) 4826 { 4827 struct pqi_ctrl_info *ctrl_info; 4828 4829 ctrl_info = container_of(work, struct pqi_ctrl_info, 4830 raid_bypass_retry_work); 4831 pqi_retry_raid_bypass_requests(ctrl_info); 4832 } 4833 4834 static void pqi_clear_all_queued_raid_bypass_retries( 4835 struct pqi_ctrl_info *ctrl_info) 4836 { 4837 unsigned long flags; 4838 4839 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 4840 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 4841 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 4842 } 4843 4844 static void pqi_aio_io_complete(struct pqi_io_request *io_request, 4845 void *context) 4846 { 4847 struct scsi_cmnd *scmd; 4848 4849 scmd = io_request->scmd; 4850 scsi_dma_unmap(scmd); 4851 if (io_request->status == -EAGAIN) 4852 set_host_byte(scmd, DID_IMM_RETRY); 4853 else if (pqi_raid_bypass_retry_needed(io_request)) { 4854 pqi_queue_raid_bypass_retry(io_request); 4855 return; 4856 } 4857 pqi_free_io_request(io_request); 4858 pqi_scsi_done(scmd); 4859 } 4860 4861 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 4862 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 4863 struct pqi_queue_group *queue_group) 4864 { 4865 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle, 4866 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false); 4867 } 4868 4869 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, 4870 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, 4871 unsigned int cdb_length, struct pqi_queue_group *queue_group, 4872 struct pqi_encryption_info *encryption_info, bool raid_bypass) 4873 { 4874 int rc; 4875 struct pqi_io_request *io_request; 4876 struct pqi_aio_path_request *request; 4877 4878 io_request = pqi_alloc_io_request(ctrl_info); 4879 io_request->io_complete_callback = pqi_aio_io_complete; 4880 io_request->scmd = scmd; 4881 io_request->raid_bypass = raid_bypass; 4882 4883 request = io_request->iu; 4884 memset(request, 0, 4885 offsetof(struct pqi_raid_path_request, sg_descriptors)); 4886 4887 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO; 4888 put_unaligned_le32(aio_handle, &request->nexus_id); 4889 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 4890 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 4891 put_unaligned_le16(io_request->index, &request->request_id); 4892 request->error_index = request->request_id; 4893 if (cdb_length > sizeof(request->cdb)) 4894 cdb_length = sizeof(request->cdb); 4895 request->cdb_length = cdb_length; 4896 memcpy(request->cdb, cdb, cdb_length); 4897 4898 switch (scmd->sc_data_direction) { 4899 case DMA_TO_DEVICE: 4900 request->data_direction = SOP_READ_FLAG; 4901 break; 4902 case DMA_FROM_DEVICE: 4903 request->data_direction = SOP_WRITE_FLAG; 4904 break; 4905 case DMA_NONE: 4906 request->data_direction = SOP_NO_DIRECTION_FLAG; 4907 break; 4908 case DMA_BIDIRECTIONAL: 4909 request->data_direction = SOP_BIDIRECTIONAL; 4910 break; 4911 default: 4912 dev_err(&ctrl_info->pci_dev->dev, 4913 "unknown data direction: %d\n", 4914 scmd->sc_data_direction); 4915 break; 4916 } 4917 4918 if (encryption_info) { 4919 request->encryption_enable = true; 4920 put_unaligned_le16(encryption_info->data_encryption_key_index, 4921 &request->data_encryption_key_index); 4922 put_unaligned_le32(encryption_info->encrypt_tweak_lower, 4923 &request->encrypt_tweak_lower); 4924 put_unaligned_le32(encryption_info->encrypt_tweak_upper, 4925 &request->encrypt_tweak_upper); 4926 } 4927 4928 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request); 4929 if (rc) { 4930 pqi_free_io_request(io_request); 4931 return SCSI_MLQUEUE_HOST_BUSY; 4932 } 4933 4934 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request); 4935 4936 return 0; 4937 } 4938 4939 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info, 4940 struct scsi_cmnd *scmd) 4941 { 4942 u16 hw_queue; 4943 4944 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request)); 4945 if (hw_queue > ctrl_info->max_hw_queue_index) 4946 hw_queue = 0; 4947 4948 return hw_queue; 4949 } 4950 4951 /* 4952 * This function gets called just before we hand the completed SCSI request 4953 * back to the SML. 4954 */ 4955 4956 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd) 4957 { 4958 struct pqi_scsi_dev *device; 4959 4960 device = scmd->device->hostdata; 4961 atomic_dec(&device->scsi_cmds_outstanding); 4962 } 4963 4964 static int pqi_scsi_queue_command(struct Scsi_Host *shost, 4965 struct scsi_cmnd *scmd) 4966 { 4967 int rc; 4968 struct pqi_ctrl_info *ctrl_info; 4969 struct pqi_scsi_dev *device; 4970 u16 hw_queue; 4971 struct pqi_queue_group *queue_group; 4972 bool raid_bypassed; 4973 4974 device = scmd->device->hostdata; 4975 ctrl_info = shost_to_hba(shost); 4976 4977 atomic_inc(&device->scsi_cmds_outstanding); 4978 4979 if (pqi_ctrl_offline(ctrl_info)) { 4980 set_host_byte(scmd, DID_NO_CONNECT); 4981 pqi_scsi_done(scmd); 4982 return 0; 4983 } 4984 4985 pqi_ctrl_busy(ctrl_info); 4986 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device)) { 4987 rc = SCSI_MLQUEUE_HOST_BUSY; 4988 goto out; 4989 } 4990 4991 /* 4992 * This is necessary because the SML doesn't zero out this field during 4993 * error recovery. 4994 */ 4995 scmd->result = 0; 4996 4997 hw_queue = pqi_get_hw_queue(ctrl_info, scmd); 4998 queue_group = &ctrl_info->queue_groups[hw_queue]; 4999 5000 if (pqi_is_logical_device(device)) { 5001 raid_bypassed = false; 5002 if (device->raid_bypass_enabled && 5003 !blk_rq_is_passthrough(scmd->request)) { 5004 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, 5005 scmd, queue_group); 5006 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) 5007 raid_bypassed = true; 5008 } 5009 if (!raid_bypassed) 5010 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, 5011 queue_group); 5012 } else { 5013 if (device->aio_enabled) 5014 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, 5015 queue_group); 5016 else 5017 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, 5018 queue_group); 5019 } 5020 5021 out: 5022 pqi_ctrl_unbusy(ctrl_info); 5023 if (rc) 5024 atomic_dec(&device->scsi_cmds_outstanding); 5025 5026 return rc; 5027 } 5028 5029 static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info, 5030 struct pqi_queue_group *queue_group) 5031 { 5032 unsigned int path; 5033 unsigned long flags; 5034 bool list_is_empty; 5035 5036 for (path = 0; path < 2; path++) { 5037 while (1) { 5038 spin_lock_irqsave( 5039 &queue_group->submit_lock[path], flags); 5040 list_is_empty = 5041 list_empty(&queue_group->request_list[path]); 5042 spin_unlock_irqrestore( 5043 &queue_group->submit_lock[path], flags); 5044 if (list_is_empty) 5045 break; 5046 pqi_check_ctrl_health(ctrl_info); 5047 if (pqi_ctrl_offline(ctrl_info)) 5048 return -ENXIO; 5049 usleep_range(1000, 2000); 5050 } 5051 } 5052 5053 return 0; 5054 } 5055 5056 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info) 5057 { 5058 int rc; 5059 unsigned int i; 5060 unsigned int path; 5061 struct pqi_queue_group *queue_group; 5062 pqi_index_t iq_pi; 5063 pqi_index_t iq_ci; 5064 5065 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5066 queue_group = &ctrl_info->queue_groups[i]; 5067 5068 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group); 5069 if (rc) 5070 return rc; 5071 5072 for (path = 0; path < 2; path++) { 5073 iq_pi = queue_group->iq_pi_copy[path]; 5074 5075 while (1) { 5076 iq_ci = *queue_group->iq_ci[path]; 5077 if (iq_ci == iq_pi) 5078 break; 5079 pqi_check_ctrl_health(ctrl_info); 5080 if (pqi_ctrl_offline(ctrl_info)) 5081 return -ENXIO; 5082 usleep_range(1000, 2000); 5083 } 5084 } 5085 } 5086 5087 return 0; 5088 } 5089 5090 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info, 5091 struct pqi_scsi_dev *device) 5092 { 5093 unsigned int i; 5094 unsigned int path; 5095 struct pqi_queue_group *queue_group; 5096 unsigned long flags; 5097 struct pqi_io_request *io_request; 5098 struct pqi_io_request *next; 5099 struct scsi_cmnd *scmd; 5100 struct pqi_scsi_dev *scsi_device; 5101 5102 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5103 queue_group = &ctrl_info->queue_groups[i]; 5104 5105 for (path = 0; path < 2; path++) { 5106 spin_lock_irqsave( 5107 &queue_group->submit_lock[path], flags); 5108 5109 list_for_each_entry_safe(io_request, next, 5110 &queue_group->request_list[path], 5111 request_list_entry) { 5112 scmd = io_request->scmd; 5113 if (!scmd) 5114 continue; 5115 5116 scsi_device = scmd->device->hostdata; 5117 if (scsi_device != device) 5118 continue; 5119 5120 list_del(&io_request->request_list_entry); 5121 set_host_byte(scmd, DID_RESET); 5122 pqi_scsi_done(scmd); 5123 } 5124 5125 spin_unlock_irqrestore( 5126 &queue_group->submit_lock[path], flags); 5127 } 5128 } 5129 } 5130 5131 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5132 struct pqi_scsi_dev *device) 5133 { 5134 while (atomic_read(&device->scsi_cmds_outstanding)) { 5135 pqi_check_ctrl_health(ctrl_info); 5136 if (pqi_ctrl_offline(ctrl_info)) 5137 return -ENXIO; 5138 usleep_range(1000, 2000); 5139 } 5140 5141 return 0; 5142 } 5143 5144 static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info) 5145 { 5146 bool io_pending; 5147 unsigned long flags; 5148 struct pqi_scsi_dev *device; 5149 5150 while (1) { 5151 io_pending = false; 5152 5153 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5154 list_for_each_entry(device, &ctrl_info->scsi_device_list, 5155 scsi_device_list_entry) { 5156 if (atomic_read(&device->scsi_cmds_outstanding)) { 5157 io_pending = true; 5158 break; 5159 } 5160 } 5161 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 5162 flags); 5163 5164 if (!io_pending) 5165 break; 5166 5167 pqi_check_ctrl_health(ctrl_info); 5168 if (pqi_ctrl_offline(ctrl_info)) 5169 return -ENXIO; 5170 5171 usleep_range(1000, 2000); 5172 } 5173 5174 return 0; 5175 } 5176 5177 static void pqi_lun_reset_complete(struct pqi_io_request *io_request, 5178 void *context) 5179 { 5180 struct completion *waiting = context; 5181 5182 complete(waiting); 5183 } 5184 5185 #define PQI_LUN_RESET_TIMEOUT_SECS 10 5186 5187 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info, 5188 struct pqi_scsi_dev *device, struct completion *wait) 5189 { 5190 int rc; 5191 5192 while (1) { 5193 if (wait_for_completion_io_timeout(wait, 5194 PQI_LUN_RESET_TIMEOUT_SECS * HZ)) { 5195 rc = 0; 5196 break; 5197 } 5198 5199 pqi_check_ctrl_health(ctrl_info); 5200 if (pqi_ctrl_offline(ctrl_info)) { 5201 rc = -ENXIO; 5202 break; 5203 } 5204 } 5205 5206 return rc; 5207 } 5208 5209 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, 5210 struct pqi_scsi_dev *device) 5211 { 5212 int rc; 5213 struct pqi_io_request *io_request; 5214 DECLARE_COMPLETION_ONSTACK(wait); 5215 struct pqi_task_management_request *request; 5216 5217 io_request = pqi_alloc_io_request(ctrl_info); 5218 io_request->io_complete_callback = pqi_lun_reset_complete; 5219 io_request->context = &wait; 5220 5221 request = io_request->iu; 5222 memset(request, 0, sizeof(*request)); 5223 5224 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT; 5225 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH, 5226 &request->header.iu_length); 5227 put_unaligned_le16(io_request->index, &request->request_id); 5228 memcpy(request->lun_number, device->scsi3addr, 5229 sizeof(request->lun_number)); 5230 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET; 5231 5232 pqi_start_io(ctrl_info, 5233 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 5234 io_request); 5235 5236 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait); 5237 if (rc == 0) 5238 rc = io_request->status; 5239 5240 pqi_free_io_request(io_request); 5241 5242 return rc; 5243 } 5244 5245 /* Performs a reset at the LUN level. */ 5246 5247 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5248 struct pqi_scsi_dev *device) 5249 { 5250 int rc; 5251 5252 rc = pqi_lun_reset(ctrl_info, device); 5253 if (rc == 0) 5254 rc = pqi_device_wait_for_pending_io(ctrl_info, device); 5255 5256 return rc == 0 ? SUCCESS : FAILED; 5257 } 5258 5259 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd) 5260 { 5261 int rc; 5262 struct Scsi_Host *shost; 5263 struct pqi_ctrl_info *ctrl_info; 5264 struct pqi_scsi_dev *device; 5265 5266 shost = scmd->device->host; 5267 ctrl_info = shost_to_hba(shost); 5268 device = scmd->device->hostdata; 5269 5270 dev_err(&ctrl_info->pci_dev->dev, 5271 "resetting scsi %d:%d:%d:%d\n", 5272 shost->host_no, device->bus, device->target, device->lun); 5273 5274 pqi_check_ctrl_health(ctrl_info); 5275 if (pqi_ctrl_offline(ctrl_info)) { 5276 rc = FAILED; 5277 goto out; 5278 } 5279 5280 mutex_lock(&ctrl_info->lun_reset_mutex); 5281 5282 pqi_ctrl_block_requests(ctrl_info); 5283 pqi_ctrl_wait_until_quiesced(ctrl_info); 5284 pqi_fail_io_queued_for_device(ctrl_info, device); 5285 rc = pqi_wait_until_inbound_queues_empty(ctrl_info); 5286 pqi_device_reset_start(device); 5287 pqi_ctrl_unblock_requests(ctrl_info); 5288 5289 if (rc) 5290 rc = FAILED; 5291 else 5292 rc = pqi_device_reset(ctrl_info, device); 5293 5294 pqi_device_reset_done(device); 5295 5296 mutex_unlock(&ctrl_info->lun_reset_mutex); 5297 5298 out: 5299 dev_err(&ctrl_info->pci_dev->dev, 5300 "reset of scsi %d:%d:%d:%d: %s\n", 5301 shost->host_no, device->bus, device->target, device->lun, 5302 rc == SUCCESS ? "SUCCESS" : "FAILED"); 5303 5304 return rc; 5305 } 5306 5307 static int pqi_slave_alloc(struct scsi_device *sdev) 5308 { 5309 struct pqi_scsi_dev *device; 5310 unsigned long flags; 5311 struct pqi_ctrl_info *ctrl_info; 5312 struct scsi_target *starget; 5313 struct sas_rphy *rphy; 5314 5315 ctrl_info = shost_to_hba(sdev->host); 5316 5317 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5318 5319 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) { 5320 starget = scsi_target(sdev); 5321 rphy = target_to_rphy(starget); 5322 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy); 5323 if (device) { 5324 device->target = sdev_id(sdev); 5325 device->lun = sdev->lun; 5326 device->target_lun_valid = true; 5327 } 5328 } else { 5329 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev), 5330 sdev_id(sdev), sdev->lun); 5331 } 5332 5333 if (device) { 5334 sdev->hostdata = device; 5335 device->sdev = sdev; 5336 if (device->queue_depth) { 5337 device->advertised_queue_depth = device->queue_depth; 5338 scsi_change_queue_depth(sdev, 5339 device->advertised_queue_depth); 5340 } 5341 } 5342 5343 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5344 5345 return 0; 5346 } 5347 5348 static int pqi_map_queues(struct Scsi_Host *shost) 5349 { 5350 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost); 5351 5352 return blk_mq_pci_map_queues(&shost->tag_set, ctrl_info->pci_dev); 5353 } 5354 5355 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, 5356 void __user *arg) 5357 { 5358 struct pci_dev *pci_dev; 5359 u32 subsystem_vendor; 5360 u32 subsystem_device; 5361 cciss_pci_info_struct pciinfo; 5362 5363 if (!arg) 5364 return -EINVAL; 5365 5366 pci_dev = ctrl_info->pci_dev; 5367 5368 pciinfo.domain = pci_domain_nr(pci_dev->bus); 5369 pciinfo.bus = pci_dev->bus->number; 5370 pciinfo.dev_fn = pci_dev->devfn; 5371 subsystem_vendor = pci_dev->subsystem_vendor; 5372 subsystem_device = pci_dev->subsystem_device; 5373 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | 5374 subsystem_vendor; 5375 5376 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo))) 5377 return -EFAULT; 5378 5379 return 0; 5380 } 5381 5382 static int pqi_getdrivver_ioctl(void __user *arg) 5383 { 5384 u32 version; 5385 5386 if (!arg) 5387 return -EINVAL; 5388 5389 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) | 5390 (DRIVER_RELEASE << 16) | DRIVER_REVISION; 5391 5392 if (copy_to_user(arg, &version, sizeof(version))) 5393 return -EFAULT; 5394 5395 return 0; 5396 } 5397 5398 struct ciss_error_info { 5399 u8 scsi_status; 5400 int command_status; 5401 size_t sense_data_length; 5402 }; 5403 5404 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info, 5405 struct ciss_error_info *ciss_error_info) 5406 { 5407 int ciss_cmd_status; 5408 size_t sense_data_length; 5409 5410 switch (pqi_error_info->data_out_result) { 5411 case PQI_DATA_IN_OUT_GOOD: 5412 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS; 5413 break; 5414 case PQI_DATA_IN_OUT_UNDERFLOW: 5415 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN; 5416 break; 5417 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 5418 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN; 5419 break; 5420 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 5421 case PQI_DATA_IN_OUT_BUFFER_ERROR: 5422 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 5423 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 5424 case PQI_DATA_IN_OUT_ERROR: 5425 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR; 5426 break; 5427 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 5428 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 5429 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 5430 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 5431 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 5432 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 5433 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 5434 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 5435 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 5436 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 5437 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR; 5438 break; 5439 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 5440 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT; 5441 break; 5442 case PQI_DATA_IN_OUT_ABORTED: 5443 ciss_cmd_status = CISS_CMD_STATUS_ABORTED; 5444 break; 5445 case PQI_DATA_IN_OUT_TIMEOUT: 5446 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT; 5447 break; 5448 default: 5449 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS; 5450 break; 5451 } 5452 5453 sense_data_length = 5454 get_unaligned_le16(&pqi_error_info->sense_data_length); 5455 if (sense_data_length == 0) 5456 sense_data_length = 5457 get_unaligned_le16(&pqi_error_info->response_data_length); 5458 if (sense_data_length) 5459 if (sense_data_length > sizeof(pqi_error_info->data)) 5460 sense_data_length = sizeof(pqi_error_info->data); 5461 5462 ciss_error_info->scsi_status = pqi_error_info->status; 5463 ciss_error_info->command_status = ciss_cmd_status; 5464 ciss_error_info->sense_data_length = sense_data_length; 5465 } 5466 5467 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg) 5468 { 5469 int rc; 5470 char *kernel_buffer = NULL; 5471 u16 iu_length; 5472 size_t sense_data_length; 5473 IOCTL_Command_struct iocommand; 5474 struct pqi_raid_path_request request; 5475 struct pqi_raid_error_info pqi_error_info; 5476 struct ciss_error_info ciss_error_info; 5477 5478 if (pqi_ctrl_offline(ctrl_info)) 5479 return -ENXIO; 5480 if (!arg) 5481 return -EINVAL; 5482 if (!capable(CAP_SYS_RAWIO)) 5483 return -EPERM; 5484 if (copy_from_user(&iocommand, arg, sizeof(iocommand))) 5485 return -EFAULT; 5486 if (iocommand.buf_size < 1 && 5487 iocommand.Request.Type.Direction != XFER_NONE) 5488 return -EINVAL; 5489 if (iocommand.Request.CDBLen > sizeof(request.cdb)) 5490 return -EINVAL; 5491 if (iocommand.Request.Type.Type != TYPE_CMD) 5492 return -EINVAL; 5493 5494 switch (iocommand.Request.Type.Direction) { 5495 case XFER_NONE: 5496 case XFER_WRITE: 5497 case XFER_READ: 5498 case XFER_READ | XFER_WRITE: 5499 break; 5500 default: 5501 return -EINVAL; 5502 } 5503 5504 if (iocommand.buf_size > 0) { 5505 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL); 5506 if (!kernel_buffer) 5507 return -ENOMEM; 5508 if (iocommand.Request.Type.Direction & XFER_WRITE) { 5509 if (copy_from_user(kernel_buffer, iocommand.buf, 5510 iocommand.buf_size)) { 5511 rc = -EFAULT; 5512 goto out; 5513 } 5514 } else { 5515 memset(kernel_buffer, 0, iocommand.buf_size); 5516 } 5517 } 5518 5519 memset(&request, 0, sizeof(request)); 5520 5521 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 5522 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 5523 PQI_REQUEST_HEADER_LENGTH; 5524 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes, 5525 sizeof(request.lun_number)); 5526 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen); 5527 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 5528 5529 switch (iocommand.Request.Type.Direction) { 5530 case XFER_NONE: 5531 request.data_direction = SOP_NO_DIRECTION_FLAG; 5532 break; 5533 case XFER_WRITE: 5534 request.data_direction = SOP_WRITE_FLAG; 5535 break; 5536 case XFER_READ: 5537 request.data_direction = SOP_READ_FLAG; 5538 break; 5539 case XFER_READ | XFER_WRITE: 5540 request.data_direction = SOP_BIDIRECTIONAL; 5541 break; 5542 } 5543 5544 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 5545 5546 if (iocommand.buf_size > 0) { 5547 put_unaligned_le32(iocommand.buf_size, &request.buffer_length); 5548 5549 rc = pqi_map_single(ctrl_info->pci_dev, 5550 &request.sg_descriptors[0], kernel_buffer, 5551 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); 5552 if (rc) 5553 goto out; 5554 5555 iu_length += sizeof(request.sg_descriptors[0]); 5556 } 5557 5558 put_unaligned_le16(iu_length, &request.header.iu_length); 5559 5560 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 5561 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT); 5562 5563 if (iocommand.buf_size > 0) 5564 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 5565 PCI_DMA_BIDIRECTIONAL); 5566 5567 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info)); 5568 5569 if (rc == 0) { 5570 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info); 5571 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status; 5572 iocommand.error_info.CommandStatus = 5573 ciss_error_info.command_status; 5574 sense_data_length = ciss_error_info.sense_data_length; 5575 if (sense_data_length) { 5576 if (sense_data_length > 5577 sizeof(iocommand.error_info.SenseInfo)) 5578 sense_data_length = 5579 sizeof(iocommand.error_info.SenseInfo); 5580 memcpy(iocommand.error_info.SenseInfo, 5581 pqi_error_info.data, sense_data_length); 5582 iocommand.error_info.SenseLen = sense_data_length; 5583 } 5584 } 5585 5586 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) { 5587 rc = -EFAULT; 5588 goto out; 5589 } 5590 5591 if (rc == 0 && iocommand.buf_size > 0 && 5592 (iocommand.Request.Type.Direction & XFER_READ)) { 5593 if (copy_to_user(iocommand.buf, kernel_buffer, 5594 iocommand.buf_size)) { 5595 rc = -EFAULT; 5596 } 5597 } 5598 5599 out: 5600 kfree(kernel_buffer); 5601 5602 return rc; 5603 } 5604 5605 static int pqi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) 5606 { 5607 int rc; 5608 struct pqi_ctrl_info *ctrl_info; 5609 5610 ctrl_info = shost_to_hba(sdev->host); 5611 5612 switch (cmd) { 5613 case CCISS_DEREGDISK: 5614 case CCISS_REGNEWDISK: 5615 case CCISS_REGNEWD: 5616 rc = pqi_scan_scsi_devices(ctrl_info); 5617 break; 5618 case CCISS_GETPCIINFO: 5619 rc = pqi_getpciinfo_ioctl(ctrl_info, arg); 5620 break; 5621 case CCISS_GETDRIVVER: 5622 rc = pqi_getdrivver_ioctl(arg); 5623 break; 5624 case CCISS_PASSTHRU: 5625 rc = pqi_passthru_ioctl(ctrl_info, arg); 5626 break; 5627 default: 5628 rc = -EINVAL; 5629 break; 5630 } 5631 5632 return rc; 5633 } 5634 5635 static ssize_t pqi_version_show(struct device *dev, 5636 struct device_attribute *attr, char *buffer) 5637 { 5638 ssize_t count = 0; 5639 struct Scsi_Host *shost; 5640 struct pqi_ctrl_info *ctrl_info; 5641 5642 shost = class_to_shost(dev); 5643 ctrl_info = shost_to_hba(shost); 5644 5645 count += snprintf(buffer + count, PAGE_SIZE - count, 5646 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP); 5647 5648 count += snprintf(buffer + count, PAGE_SIZE - count, 5649 "firmware: %s\n", ctrl_info->firmware_version); 5650 5651 return count; 5652 } 5653 5654 static ssize_t pqi_host_rescan_store(struct device *dev, 5655 struct device_attribute *attr, const char *buffer, size_t count) 5656 { 5657 struct Scsi_Host *shost = class_to_shost(dev); 5658 5659 pqi_scan_start(shost); 5660 5661 return count; 5662 } 5663 5664 static ssize_t pqi_lockup_action_show(struct device *dev, 5665 struct device_attribute *attr, char *buffer) 5666 { 5667 int count = 0; 5668 unsigned int i; 5669 5670 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 5671 if (pqi_lockup_actions[i].action == pqi_lockup_action) 5672 count += snprintf(buffer + count, PAGE_SIZE - count, 5673 "[%s] ", pqi_lockup_actions[i].name); 5674 else 5675 count += snprintf(buffer + count, PAGE_SIZE - count, 5676 "%s ", pqi_lockup_actions[i].name); 5677 } 5678 5679 count += snprintf(buffer + count, PAGE_SIZE - count, "\n"); 5680 5681 return count; 5682 } 5683 5684 static ssize_t pqi_lockup_action_store(struct device *dev, 5685 struct device_attribute *attr, const char *buffer, size_t count) 5686 { 5687 unsigned int i; 5688 char *action_name; 5689 char action_name_buffer[32]; 5690 5691 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer)); 5692 action_name = strstrip(action_name_buffer); 5693 5694 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 5695 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) { 5696 pqi_lockup_action = pqi_lockup_actions[i].action; 5697 return count; 5698 } 5699 } 5700 5701 return -EINVAL; 5702 } 5703 5704 static DEVICE_ATTR(version, 0444, pqi_version_show, NULL); 5705 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store); 5706 static DEVICE_ATTR(lockup_action, 0644, 5707 pqi_lockup_action_show, pqi_lockup_action_store); 5708 5709 static struct device_attribute *pqi_shost_attrs[] = { 5710 &dev_attr_version, 5711 &dev_attr_rescan, 5712 &dev_attr_lockup_action, 5713 NULL 5714 }; 5715 5716 static ssize_t pqi_sas_address_show(struct device *dev, 5717 struct device_attribute *attr, char *buffer) 5718 { 5719 struct pqi_ctrl_info *ctrl_info; 5720 struct scsi_device *sdev; 5721 struct pqi_scsi_dev *device; 5722 unsigned long flags; 5723 u64 sas_address; 5724 5725 sdev = to_scsi_device(dev); 5726 ctrl_info = shost_to_hba(sdev->host); 5727 5728 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5729 5730 device = sdev->hostdata; 5731 if (pqi_is_logical_device(device)) { 5732 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 5733 flags); 5734 return -ENODEV; 5735 } 5736 sas_address = device->sas_address; 5737 5738 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5739 5740 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address); 5741 } 5742 5743 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev, 5744 struct device_attribute *attr, char *buffer) 5745 { 5746 struct pqi_ctrl_info *ctrl_info; 5747 struct scsi_device *sdev; 5748 struct pqi_scsi_dev *device; 5749 unsigned long flags; 5750 5751 sdev = to_scsi_device(dev); 5752 ctrl_info = shost_to_hba(sdev->host); 5753 5754 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5755 5756 device = sdev->hostdata; 5757 buffer[0] = device->raid_bypass_enabled ? '1' : '0'; 5758 buffer[1] = '\n'; 5759 buffer[2] = '\0'; 5760 5761 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5762 5763 return 2; 5764 } 5765 5766 static ssize_t pqi_raid_level_show(struct device *dev, 5767 struct device_attribute *attr, char *buffer) 5768 { 5769 struct pqi_ctrl_info *ctrl_info; 5770 struct scsi_device *sdev; 5771 struct pqi_scsi_dev *device; 5772 unsigned long flags; 5773 char *raid_level; 5774 5775 sdev = to_scsi_device(dev); 5776 ctrl_info = shost_to_hba(sdev->host); 5777 5778 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5779 5780 device = sdev->hostdata; 5781 5782 if (pqi_is_logical_device(device)) 5783 raid_level = pqi_raid_level_to_string(device->raid_level); 5784 else 5785 raid_level = "N/A"; 5786 5787 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5788 5789 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level); 5790 } 5791 5792 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL); 5793 static DEVICE_ATTR(ssd_smart_path_enabled, 0444, 5794 pqi_ssd_smart_path_enabled_show, NULL); 5795 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL); 5796 5797 static struct device_attribute *pqi_sdev_attrs[] = { 5798 &dev_attr_sas_address, 5799 &dev_attr_ssd_smart_path_enabled, 5800 &dev_attr_raid_level, 5801 NULL 5802 }; 5803 5804 static struct scsi_host_template pqi_driver_template = { 5805 .module = THIS_MODULE, 5806 .name = DRIVER_NAME_SHORT, 5807 .proc_name = DRIVER_NAME_SHORT, 5808 .queuecommand = pqi_scsi_queue_command, 5809 .scan_start = pqi_scan_start, 5810 .scan_finished = pqi_scan_finished, 5811 .this_id = -1, 5812 .use_clustering = ENABLE_CLUSTERING, 5813 .eh_device_reset_handler = pqi_eh_device_reset_handler, 5814 .ioctl = pqi_ioctl, 5815 .slave_alloc = pqi_slave_alloc, 5816 .map_queues = pqi_map_queues, 5817 .sdev_attrs = pqi_sdev_attrs, 5818 .shost_attrs = pqi_shost_attrs, 5819 }; 5820 5821 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info) 5822 { 5823 int rc; 5824 struct Scsi_Host *shost; 5825 5826 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info)); 5827 if (!shost) { 5828 dev_err(&ctrl_info->pci_dev->dev, 5829 "scsi_host_alloc failed for controller %u\n", 5830 ctrl_info->ctrl_id); 5831 return -ENOMEM; 5832 } 5833 5834 shost->io_port = 0; 5835 shost->n_io_port = 0; 5836 shost->this_id = -1; 5837 shost->max_channel = PQI_MAX_BUS; 5838 shost->max_cmd_len = MAX_COMMAND_SIZE; 5839 shost->max_lun = ~0; 5840 shost->max_id = ~0; 5841 shost->max_sectors = ctrl_info->max_sectors; 5842 shost->can_queue = ctrl_info->scsi_ml_can_queue; 5843 shost->cmd_per_lun = shost->can_queue; 5844 shost->sg_tablesize = ctrl_info->sg_tablesize; 5845 shost->transportt = pqi_sas_transport_template; 5846 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0); 5847 shost->unique_id = shost->irq; 5848 shost->nr_hw_queues = ctrl_info->num_queue_groups; 5849 shost->hostdata[0] = (unsigned long)ctrl_info; 5850 5851 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev); 5852 if (rc) { 5853 dev_err(&ctrl_info->pci_dev->dev, 5854 "scsi_add_host failed for controller %u\n", 5855 ctrl_info->ctrl_id); 5856 goto free_host; 5857 } 5858 5859 rc = pqi_add_sas_host(shost, ctrl_info); 5860 if (rc) { 5861 dev_err(&ctrl_info->pci_dev->dev, 5862 "add SAS host failed for controller %u\n", 5863 ctrl_info->ctrl_id); 5864 goto remove_host; 5865 } 5866 5867 ctrl_info->scsi_host = shost; 5868 5869 return 0; 5870 5871 remove_host: 5872 scsi_remove_host(shost); 5873 free_host: 5874 scsi_host_put(shost); 5875 5876 return rc; 5877 } 5878 5879 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info) 5880 { 5881 struct Scsi_Host *shost; 5882 5883 pqi_delete_sas_host(ctrl_info); 5884 5885 shost = ctrl_info->scsi_host; 5886 if (!shost) 5887 return; 5888 5889 scsi_remove_host(shost); 5890 scsi_host_put(shost); 5891 } 5892 5893 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info) 5894 { 5895 int rc = 0; 5896 struct pqi_device_registers __iomem *pqi_registers; 5897 unsigned long timeout; 5898 unsigned int timeout_msecs; 5899 union pqi_reset_register reset_reg; 5900 5901 pqi_registers = ctrl_info->pqi_registers; 5902 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100; 5903 timeout = msecs_to_jiffies(timeout_msecs) + jiffies; 5904 5905 while (1) { 5906 msleep(PQI_RESET_POLL_INTERVAL_MSECS); 5907 reset_reg.all_bits = readl(&pqi_registers->device_reset); 5908 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED) 5909 break; 5910 pqi_check_ctrl_health(ctrl_info); 5911 if (pqi_ctrl_offline(ctrl_info)) { 5912 rc = -ENXIO; 5913 break; 5914 } 5915 if (time_after(jiffies, timeout)) { 5916 rc = -ETIMEDOUT; 5917 break; 5918 } 5919 } 5920 5921 return rc; 5922 } 5923 5924 static int pqi_reset(struct pqi_ctrl_info *ctrl_info) 5925 { 5926 int rc; 5927 union pqi_reset_register reset_reg; 5928 5929 if (ctrl_info->pqi_reset_quiesce_supported) { 5930 rc = sis_pqi_reset_quiesce(ctrl_info); 5931 if (rc) { 5932 dev_err(&ctrl_info->pci_dev->dev, 5933 "PQI reset failed during quiesce with error %d\n", 5934 rc); 5935 return rc; 5936 } 5937 } 5938 5939 reset_reg.all_bits = 0; 5940 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET; 5941 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET; 5942 5943 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset); 5944 5945 rc = pqi_wait_for_pqi_reset_completion(ctrl_info); 5946 if (rc) 5947 dev_err(&ctrl_info->pci_dev->dev, 5948 "PQI reset failed with error %d\n", rc); 5949 5950 return rc; 5951 } 5952 5953 static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info) 5954 { 5955 int rc; 5956 struct bmic_identify_controller *identify; 5957 5958 identify = kmalloc(sizeof(*identify), GFP_KERNEL); 5959 if (!identify) 5960 return -ENOMEM; 5961 5962 rc = pqi_identify_controller(ctrl_info, identify); 5963 if (rc) 5964 goto out; 5965 5966 memcpy(ctrl_info->firmware_version, identify->firmware_version, 5967 sizeof(identify->firmware_version)); 5968 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0'; 5969 snprintf(ctrl_info->firmware_version + 5970 strlen(ctrl_info->firmware_version), 5971 sizeof(ctrl_info->firmware_version), 5972 "-%u", get_unaligned_le16(&identify->firmware_build_number)); 5973 5974 out: 5975 kfree(identify); 5976 5977 return rc; 5978 } 5979 5980 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) 5981 { 5982 u32 table_length; 5983 u32 section_offset; 5984 void __iomem *table_iomem_addr; 5985 struct pqi_config_table *config_table; 5986 struct pqi_config_table_section_header *section; 5987 5988 table_length = ctrl_info->config_table_length; 5989 5990 config_table = kmalloc(table_length, GFP_KERNEL); 5991 if (!config_table) { 5992 dev_err(&ctrl_info->pci_dev->dev, 5993 "failed to allocate memory for PQI configuration table\n"); 5994 return -ENOMEM; 5995 } 5996 5997 /* 5998 * Copy the config table contents from I/O memory space into the 5999 * temporary buffer. 6000 */ 6001 table_iomem_addr = ctrl_info->iomem_base + 6002 ctrl_info->config_table_offset; 6003 memcpy_fromio(config_table, table_iomem_addr, table_length); 6004 6005 section_offset = 6006 get_unaligned_le32(&config_table->first_section_offset); 6007 6008 while (section_offset) { 6009 section = (void *)config_table + section_offset; 6010 6011 switch (get_unaligned_le16(§ion->section_id)) { 6012 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT: 6013 if (pqi_disable_heartbeat) 6014 dev_warn(&ctrl_info->pci_dev->dev, 6015 "heartbeat disabled by module parameter\n"); 6016 else 6017 ctrl_info->heartbeat_counter = 6018 table_iomem_addr + 6019 section_offset + 6020 offsetof( 6021 struct pqi_config_table_heartbeat, 6022 heartbeat_counter); 6023 break; 6024 } 6025 6026 section_offset = 6027 get_unaligned_le16(§ion->next_section_offset); 6028 } 6029 6030 kfree(config_table); 6031 6032 return 0; 6033 } 6034 6035 /* Switches the controller from PQI mode back into SIS mode. */ 6036 6037 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info) 6038 { 6039 int rc; 6040 6041 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE); 6042 rc = pqi_reset(ctrl_info); 6043 if (rc) 6044 return rc; 6045 rc = sis_reenable_sis_mode(ctrl_info); 6046 if (rc) { 6047 dev_err(&ctrl_info->pci_dev->dev, 6048 "re-enabling SIS mode failed with error %d\n", rc); 6049 return rc; 6050 } 6051 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 6052 6053 return 0; 6054 } 6055 6056 /* 6057 * If the controller isn't already in SIS mode, this function forces it into 6058 * SIS mode. 6059 */ 6060 6061 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info) 6062 { 6063 if (!sis_is_firmware_running(ctrl_info)) 6064 return -ENXIO; 6065 6066 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE) 6067 return 0; 6068 6069 if (sis_is_kernel_up(ctrl_info)) { 6070 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 6071 return 0; 6072 } 6073 6074 return pqi_revert_to_sis_mode(ctrl_info); 6075 } 6076 6077 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info) 6078 { 6079 int rc; 6080 6081 rc = pqi_force_sis_mode(ctrl_info); 6082 if (rc) 6083 return rc; 6084 6085 /* 6086 * Wait until the controller is ready to start accepting SIS 6087 * commands. 6088 */ 6089 rc = sis_wait_for_ctrl_ready(ctrl_info); 6090 if (rc) 6091 return rc; 6092 6093 /* 6094 * Get the controller properties. This allows us to determine 6095 * whether or not it supports PQI mode. 6096 */ 6097 rc = sis_get_ctrl_properties(ctrl_info); 6098 if (rc) { 6099 dev_err(&ctrl_info->pci_dev->dev, 6100 "error obtaining controller properties\n"); 6101 return rc; 6102 } 6103 6104 rc = sis_get_pqi_capabilities(ctrl_info); 6105 if (rc) { 6106 dev_err(&ctrl_info->pci_dev->dev, 6107 "error obtaining controller capabilities\n"); 6108 return rc; 6109 } 6110 6111 if (reset_devices) { 6112 if (ctrl_info->max_outstanding_requests > 6113 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP) 6114 ctrl_info->max_outstanding_requests = 6115 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP; 6116 } else { 6117 if (ctrl_info->max_outstanding_requests > 6118 PQI_MAX_OUTSTANDING_REQUESTS) 6119 ctrl_info->max_outstanding_requests = 6120 PQI_MAX_OUTSTANDING_REQUESTS; 6121 } 6122 6123 pqi_calculate_io_resources(ctrl_info); 6124 6125 rc = pqi_alloc_error_buffer(ctrl_info); 6126 if (rc) { 6127 dev_err(&ctrl_info->pci_dev->dev, 6128 "failed to allocate PQI error buffer\n"); 6129 return rc; 6130 } 6131 6132 /* 6133 * If the function we are about to call succeeds, the 6134 * controller will transition from legacy SIS mode 6135 * into PQI mode. 6136 */ 6137 rc = sis_init_base_struct_addr(ctrl_info); 6138 if (rc) { 6139 dev_err(&ctrl_info->pci_dev->dev, 6140 "error initializing PQI mode\n"); 6141 return rc; 6142 } 6143 6144 /* Wait for the controller to complete the SIS -> PQI transition. */ 6145 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 6146 if (rc) { 6147 dev_err(&ctrl_info->pci_dev->dev, 6148 "transition to PQI mode failed\n"); 6149 return rc; 6150 } 6151 6152 /* From here on, we are running in PQI mode. */ 6153 ctrl_info->pqi_mode_enabled = true; 6154 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 6155 6156 rc = pqi_process_config_table(ctrl_info); 6157 if (rc) 6158 return rc; 6159 6160 rc = pqi_alloc_admin_queues(ctrl_info); 6161 if (rc) { 6162 dev_err(&ctrl_info->pci_dev->dev, 6163 "failed to allocate admin queues\n"); 6164 return rc; 6165 } 6166 6167 rc = pqi_create_admin_queues(ctrl_info); 6168 if (rc) { 6169 dev_err(&ctrl_info->pci_dev->dev, 6170 "error creating admin queues\n"); 6171 return rc; 6172 } 6173 6174 rc = pqi_report_device_capability(ctrl_info); 6175 if (rc) { 6176 dev_err(&ctrl_info->pci_dev->dev, 6177 "obtaining device capability failed\n"); 6178 return rc; 6179 } 6180 6181 rc = pqi_validate_device_capability(ctrl_info); 6182 if (rc) 6183 return rc; 6184 6185 pqi_calculate_queue_resources(ctrl_info); 6186 6187 rc = pqi_enable_msix_interrupts(ctrl_info); 6188 if (rc) 6189 return rc; 6190 6191 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) { 6192 ctrl_info->max_msix_vectors = 6193 ctrl_info->num_msix_vectors_enabled; 6194 pqi_calculate_queue_resources(ctrl_info); 6195 } 6196 6197 rc = pqi_alloc_io_resources(ctrl_info); 6198 if (rc) 6199 return rc; 6200 6201 rc = pqi_alloc_operational_queues(ctrl_info); 6202 if (rc) { 6203 dev_err(&ctrl_info->pci_dev->dev, 6204 "failed to allocate operational queues\n"); 6205 return rc; 6206 } 6207 6208 pqi_init_operational_queues(ctrl_info); 6209 6210 rc = pqi_request_irqs(ctrl_info); 6211 if (rc) 6212 return rc; 6213 6214 rc = pqi_create_queues(ctrl_info); 6215 if (rc) 6216 return rc; 6217 6218 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 6219 6220 ctrl_info->controller_online = true; 6221 pqi_start_heartbeat_timer(ctrl_info); 6222 6223 rc = pqi_enable_events(ctrl_info); 6224 if (rc) { 6225 dev_err(&ctrl_info->pci_dev->dev, 6226 "error enabling events\n"); 6227 return rc; 6228 } 6229 6230 /* Register with the SCSI subsystem. */ 6231 rc = pqi_register_scsi(ctrl_info); 6232 if (rc) 6233 return rc; 6234 6235 rc = pqi_get_ctrl_firmware_version(ctrl_info); 6236 if (rc) { 6237 dev_err(&ctrl_info->pci_dev->dev, 6238 "error obtaining firmware version\n"); 6239 return rc; 6240 } 6241 6242 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 6243 if (rc) { 6244 dev_err(&ctrl_info->pci_dev->dev, 6245 "error updating host wellness\n"); 6246 return rc; 6247 } 6248 6249 pqi_schedule_update_time_worker(ctrl_info); 6250 6251 pqi_scan_scsi_devices(ctrl_info); 6252 6253 return 0; 6254 } 6255 6256 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info) 6257 { 6258 unsigned int i; 6259 struct pqi_admin_queues *admin_queues; 6260 struct pqi_event_queue *event_queue; 6261 6262 admin_queues = &ctrl_info->admin_queues; 6263 admin_queues->iq_pi_copy = 0; 6264 admin_queues->oq_ci_copy = 0; 6265 *admin_queues->oq_pi = 0; 6266 6267 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 6268 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0; 6269 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0; 6270 ctrl_info->queue_groups[i].oq_ci_copy = 0; 6271 6272 *ctrl_info->queue_groups[i].iq_ci[RAID_PATH] = 0; 6273 *ctrl_info->queue_groups[i].iq_ci[AIO_PATH] = 0; 6274 *ctrl_info->queue_groups[i].oq_pi = 0; 6275 } 6276 6277 event_queue = &ctrl_info->event_queue; 6278 *event_queue->oq_pi = 0; 6279 event_queue->oq_ci_copy = 0; 6280 } 6281 6282 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) 6283 { 6284 int rc; 6285 6286 rc = pqi_force_sis_mode(ctrl_info); 6287 if (rc) 6288 return rc; 6289 6290 /* 6291 * Wait until the controller is ready to start accepting SIS 6292 * commands. 6293 */ 6294 rc = sis_wait_for_ctrl_ready_resume(ctrl_info); 6295 if (rc) 6296 return rc; 6297 6298 /* 6299 * If the function we are about to call succeeds, the 6300 * controller will transition from legacy SIS mode 6301 * into PQI mode. 6302 */ 6303 rc = sis_init_base_struct_addr(ctrl_info); 6304 if (rc) { 6305 dev_err(&ctrl_info->pci_dev->dev, 6306 "error initializing PQI mode\n"); 6307 return rc; 6308 } 6309 6310 /* Wait for the controller to complete the SIS -> PQI transition. */ 6311 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 6312 if (rc) { 6313 dev_err(&ctrl_info->pci_dev->dev, 6314 "transition to PQI mode failed\n"); 6315 return rc; 6316 } 6317 6318 /* From here on, we are running in PQI mode. */ 6319 ctrl_info->pqi_mode_enabled = true; 6320 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 6321 6322 pqi_reinit_queues(ctrl_info); 6323 6324 rc = pqi_create_admin_queues(ctrl_info); 6325 if (rc) { 6326 dev_err(&ctrl_info->pci_dev->dev, 6327 "error creating admin queues\n"); 6328 return rc; 6329 } 6330 6331 rc = pqi_create_queues(ctrl_info); 6332 if (rc) 6333 return rc; 6334 6335 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 6336 6337 ctrl_info->controller_online = true; 6338 pqi_start_heartbeat_timer(ctrl_info); 6339 pqi_ctrl_unblock_requests(ctrl_info); 6340 6341 rc = pqi_enable_events(ctrl_info); 6342 if (rc) { 6343 dev_err(&ctrl_info->pci_dev->dev, 6344 "error enabling events\n"); 6345 return rc; 6346 } 6347 6348 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 6349 if (rc) { 6350 dev_err(&ctrl_info->pci_dev->dev, 6351 "error updating host wellness\n"); 6352 return rc; 6353 } 6354 6355 pqi_schedule_update_time_worker(ctrl_info); 6356 6357 pqi_scan_scsi_devices(ctrl_info); 6358 6359 return 0; 6360 } 6361 6362 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev, 6363 u16 timeout) 6364 { 6365 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2, 6366 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout); 6367 } 6368 6369 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info) 6370 { 6371 int rc; 6372 u64 mask; 6373 6374 rc = pci_enable_device(ctrl_info->pci_dev); 6375 if (rc) { 6376 dev_err(&ctrl_info->pci_dev->dev, 6377 "failed to enable PCI device\n"); 6378 return rc; 6379 } 6380 6381 if (sizeof(dma_addr_t) > 4) 6382 mask = DMA_BIT_MASK(64); 6383 else 6384 mask = DMA_BIT_MASK(32); 6385 6386 rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask); 6387 if (rc) { 6388 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n"); 6389 goto disable_device; 6390 } 6391 6392 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT); 6393 if (rc) { 6394 dev_err(&ctrl_info->pci_dev->dev, 6395 "failed to obtain PCI resources\n"); 6396 goto disable_device; 6397 } 6398 6399 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start( 6400 ctrl_info->pci_dev, 0), 6401 sizeof(struct pqi_ctrl_registers)); 6402 if (!ctrl_info->iomem_base) { 6403 dev_err(&ctrl_info->pci_dev->dev, 6404 "failed to map memory for controller registers\n"); 6405 rc = -ENOMEM; 6406 goto release_regions; 6407 } 6408 6409 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6 6410 6411 /* Increase the PCIe completion timeout. */ 6412 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev, 6413 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS); 6414 if (rc) { 6415 dev_err(&ctrl_info->pci_dev->dev, 6416 "failed to set PCIe completion timeout\n"); 6417 goto release_regions; 6418 } 6419 6420 /* Enable bus mastering. */ 6421 pci_set_master(ctrl_info->pci_dev); 6422 6423 ctrl_info->registers = ctrl_info->iomem_base; 6424 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers; 6425 6426 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info); 6427 6428 return 0; 6429 6430 release_regions: 6431 pci_release_regions(ctrl_info->pci_dev); 6432 disable_device: 6433 pci_disable_device(ctrl_info->pci_dev); 6434 6435 return rc; 6436 } 6437 6438 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info) 6439 { 6440 iounmap(ctrl_info->iomem_base); 6441 pci_release_regions(ctrl_info->pci_dev); 6442 if (pci_is_enabled(ctrl_info->pci_dev)) 6443 pci_disable_device(ctrl_info->pci_dev); 6444 pci_set_drvdata(ctrl_info->pci_dev, NULL); 6445 } 6446 6447 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node) 6448 { 6449 struct pqi_ctrl_info *ctrl_info; 6450 6451 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info), 6452 GFP_KERNEL, numa_node); 6453 if (!ctrl_info) 6454 return NULL; 6455 6456 mutex_init(&ctrl_info->scan_mutex); 6457 mutex_init(&ctrl_info->lun_reset_mutex); 6458 6459 INIT_LIST_HEAD(&ctrl_info->scsi_device_list); 6460 spin_lock_init(&ctrl_info->scsi_device_list_lock); 6461 6462 INIT_WORK(&ctrl_info->event_work, pqi_event_worker); 6463 atomic_set(&ctrl_info->num_interrupts, 0); 6464 6465 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker); 6466 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker); 6467 6468 init_timer(&ctrl_info->heartbeat_timer); 6469 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker); 6470 6471 sema_init(&ctrl_info->sync_request_sem, 6472 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS); 6473 init_waitqueue_head(&ctrl_info->block_requests_wait); 6474 6475 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 6476 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock); 6477 INIT_WORK(&ctrl_info->raid_bypass_retry_work, 6478 pqi_raid_bypass_retry_worker); 6479 6480 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1; 6481 ctrl_info->irq_mode = IRQ_MODE_NONE; 6482 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS; 6483 6484 return ctrl_info; 6485 } 6486 6487 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info) 6488 { 6489 kfree(ctrl_info); 6490 } 6491 6492 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info) 6493 { 6494 pqi_free_irqs(ctrl_info); 6495 pqi_disable_msix_interrupts(ctrl_info); 6496 } 6497 6498 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info) 6499 { 6500 pqi_stop_heartbeat_timer(ctrl_info); 6501 pqi_free_interrupts(ctrl_info); 6502 if (ctrl_info->queue_memory_base) 6503 dma_free_coherent(&ctrl_info->pci_dev->dev, 6504 ctrl_info->queue_memory_length, 6505 ctrl_info->queue_memory_base, 6506 ctrl_info->queue_memory_base_dma_handle); 6507 if (ctrl_info->admin_queue_memory_base) 6508 dma_free_coherent(&ctrl_info->pci_dev->dev, 6509 ctrl_info->admin_queue_memory_length, 6510 ctrl_info->admin_queue_memory_base, 6511 ctrl_info->admin_queue_memory_base_dma_handle); 6512 pqi_free_all_io_requests(ctrl_info); 6513 if (ctrl_info->error_buffer) 6514 dma_free_coherent(&ctrl_info->pci_dev->dev, 6515 ctrl_info->error_buffer_length, 6516 ctrl_info->error_buffer, 6517 ctrl_info->error_buffer_dma_handle); 6518 if (ctrl_info->iomem_base) 6519 pqi_cleanup_pci_init(ctrl_info); 6520 pqi_free_ctrl_info(ctrl_info); 6521 } 6522 6523 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info) 6524 { 6525 pqi_cancel_rescan_worker(ctrl_info); 6526 pqi_cancel_update_time_worker(ctrl_info); 6527 pqi_remove_all_scsi_devices(ctrl_info); 6528 pqi_unregister_scsi(ctrl_info); 6529 if (ctrl_info->pqi_mode_enabled) 6530 pqi_revert_to_sis_mode(ctrl_info); 6531 pqi_free_ctrl_resources(ctrl_info); 6532 } 6533 6534 static void pqi_perform_lockup_action(void) 6535 { 6536 switch (pqi_lockup_action) { 6537 case PANIC: 6538 panic("FATAL: Smart Family Controller lockup detected"); 6539 break; 6540 case REBOOT: 6541 emergency_restart(); 6542 break; 6543 case NONE: 6544 default: 6545 break; 6546 } 6547 } 6548 6549 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = { 6550 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR, 6551 .status = SAM_STAT_CHECK_CONDITION, 6552 }; 6553 6554 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info) 6555 { 6556 unsigned int i; 6557 struct pqi_io_request *io_request; 6558 struct scsi_cmnd *scmd; 6559 6560 for (i = 0; i < ctrl_info->max_io_slots; i++) { 6561 io_request = &ctrl_info->io_request_pool[i]; 6562 if (atomic_read(&io_request->refcount) == 0) 6563 continue; 6564 6565 scmd = io_request->scmd; 6566 if (scmd) { 6567 set_host_byte(scmd, DID_NO_CONNECT); 6568 } else { 6569 io_request->status = -ENXIO; 6570 io_request->error_info = 6571 &pqi_ctrl_offline_raid_error_info; 6572 } 6573 6574 io_request->io_complete_callback(io_request, 6575 io_request->context); 6576 } 6577 } 6578 6579 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info) 6580 { 6581 pqi_perform_lockup_action(); 6582 pqi_stop_heartbeat_timer(ctrl_info); 6583 pqi_free_interrupts(ctrl_info); 6584 pqi_cancel_rescan_worker(ctrl_info); 6585 pqi_cancel_update_time_worker(ctrl_info); 6586 pqi_ctrl_wait_until_quiesced(ctrl_info); 6587 pqi_fail_all_outstanding_requests(ctrl_info); 6588 pqi_clear_all_queued_raid_bypass_retries(ctrl_info); 6589 pqi_ctrl_unblock_requests(ctrl_info); 6590 } 6591 6592 static void pqi_ctrl_offline_worker(struct work_struct *work) 6593 { 6594 struct pqi_ctrl_info *ctrl_info; 6595 6596 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work); 6597 pqi_take_ctrl_offline_deferred(ctrl_info); 6598 } 6599 6600 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info) 6601 { 6602 if (!ctrl_info->controller_online) 6603 return; 6604 6605 ctrl_info->controller_online = false; 6606 ctrl_info->pqi_mode_enabled = false; 6607 pqi_ctrl_block_requests(ctrl_info); 6608 if (!pqi_disable_ctrl_shutdown) 6609 sis_shutdown_ctrl(ctrl_info); 6610 pci_disable_device(ctrl_info->pci_dev); 6611 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n"); 6612 schedule_work(&ctrl_info->ctrl_offline_work); 6613 } 6614 6615 static void pqi_print_ctrl_info(struct pci_dev *pci_dev, 6616 const struct pci_device_id *id) 6617 { 6618 char *ctrl_description; 6619 6620 if (id->driver_data) 6621 ctrl_description = (char *)id->driver_data; 6622 else 6623 ctrl_description = "Microsemi Smart Family Controller"; 6624 6625 dev_info(&pci_dev->dev, "%s found\n", ctrl_description); 6626 } 6627 6628 static int pqi_pci_probe(struct pci_dev *pci_dev, 6629 const struct pci_device_id *id) 6630 { 6631 int rc; 6632 int node; 6633 struct pqi_ctrl_info *ctrl_info; 6634 6635 pqi_print_ctrl_info(pci_dev, id); 6636 6637 if (pqi_disable_device_id_wildcards && 6638 id->subvendor == PCI_ANY_ID && 6639 id->subdevice == PCI_ANY_ID) { 6640 dev_warn(&pci_dev->dev, 6641 "controller not probed because device ID wildcards are disabled\n"); 6642 return -ENODEV; 6643 } 6644 6645 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID) 6646 dev_warn(&pci_dev->dev, 6647 "controller device ID matched using wildcards\n"); 6648 6649 node = dev_to_node(&pci_dev->dev); 6650 if (node == NUMA_NO_NODE) 6651 set_dev_node(&pci_dev->dev, 0); 6652 6653 ctrl_info = pqi_alloc_ctrl_info(node); 6654 if (!ctrl_info) { 6655 dev_err(&pci_dev->dev, 6656 "failed to allocate controller info block\n"); 6657 return -ENOMEM; 6658 } 6659 6660 ctrl_info->pci_dev = pci_dev; 6661 6662 rc = pqi_pci_init(ctrl_info); 6663 if (rc) 6664 goto error; 6665 6666 rc = pqi_ctrl_init(ctrl_info); 6667 if (rc) 6668 goto error; 6669 6670 return 0; 6671 6672 error: 6673 pqi_remove_ctrl(ctrl_info); 6674 6675 return rc; 6676 } 6677 6678 static void pqi_pci_remove(struct pci_dev *pci_dev) 6679 { 6680 struct pqi_ctrl_info *ctrl_info; 6681 6682 ctrl_info = pci_get_drvdata(pci_dev); 6683 if (!ctrl_info) 6684 return; 6685 6686 pqi_remove_ctrl(ctrl_info); 6687 } 6688 6689 static void pqi_shutdown(struct pci_dev *pci_dev) 6690 { 6691 int rc; 6692 struct pqi_ctrl_info *ctrl_info; 6693 6694 ctrl_info = pci_get_drvdata(pci_dev); 6695 if (!ctrl_info) 6696 goto error; 6697 6698 /* 6699 * Write all data in the controller's battery-backed cache to 6700 * storage. 6701 */ 6702 rc = pqi_flush_cache(ctrl_info, SHUTDOWN); 6703 pqi_reset(ctrl_info); 6704 if (rc == 0) 6705 return; 6706 6707 error: 6708 dev_warn(&pci_dev->dev, 6709 "unable to flush controller cache\n"); 6710 } 6711 6712 static void pqi_process_lockup_action_param(void) 6713 { 6714 unsigned int i; 6715 6716 if (!pqi_lockup_action_param) 6717 return; 6718 6719 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6720 if (strcmp(pqi_lockup_action_param, 6721 pqi_lockup_actions[i].name) == 0) { 6722 pqi_lockup_action = pqi_lockup_actions[i].action; 6723 return; 6724 } 6725 } 6726 6727 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n", 6728 DRIVER_NAME_SHORT, pqi_lockup_action_param); 6729 } 6730 6731 static void pqi_process_module_params(void) 6732 { 6733 pqi_process_lockup_action_param(); 6734 } 6735 6736 static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state) 6737 { 6738 struct pqi_ctrl_info *ctrl_info; 6739 6740 ctrl_info = pci_get_drvdata(pci_dev); 6741 6742 pqi_disable_events(ctrl_info); 6743 pqi_cancel_update_time_worker(ctrl_info); 6744 pqi_cancel_rescan_worker(ctrl_info); 6745 pqi_wait_until_scan_finished(ctrl_info); 6746 pqi_wait_until_lun_reset_finished(ctrl_info); 6747 pqi_flush_cache(ctrl_info, SUSPEND); 6748 pqi_ctrl_block_requests(ctrl_info); 6749 pqi_ctrl_wait_until_quiesced(ctrl_info); 6750 pqi_wait_until_inbound_queues_empty(ctrl_info); 6751 pqi_ctrl_wait_for_pending_io(ctrl_info); 6752 pqi_stop_heartbeat_timer(ctrl_info); 6753 6754 if (state.event == PM_EVENT_FREEZE) 6755 return 0; 6756 6757 pci_save_state(pci_dev); 6758 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)); 6759 6760 ctrl_info->controller_online = false; 6761 ctrl_info->pqi_mode_enabled = false; 6762 6763 return 0; 6764 } 6765 6766 static __maybe_unused int pqi_resume(struct pci_dev *pci_dev) 6767 { 6768 int rc; 6769 struct pqi_ctrl_info *ctrl_info; 6770 6771 ctrl_info = pci_get_drvdata(pci_dev); 6772 6773 if (pci_dev->current_state != PCI_D0) { 6774 ctrl_info->max_hw_queue_index = 0; 6775 pqi_free_interrupts(ctrl_info); 6776 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX); 6777 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler, 6778 IRQF_SHARED, DRIVER_NAME_SHORT, 6779 &ctrl_info->queue_groups[0]); 6780 if (rc) { 6781 dev_err(&ctrl_info->pci_dev->dev, 6782 "irq %u init failed with error %d\n", 6783 pci_dev->irq, rc); 6784 return rc; 6785 } 6786 pqi_start_heartbeat_timer(ctrl_info); 6787 pqi_ctrl_unblock_requests(ctrl_info); 6788 return 0; 6789 } 6790 6791 pci_set_power_state(pci_dev, PCI_D0); 6792 pci_restore_state(pci_dev); 6793 6794 return pqi_ctrl_init_resume(ctrl_info); 6795 } 6796 6797 /* Define the PCI IDs for the controllers that we support. */ 6798 static const struct pci_device_id pqi_pci_id_table[] = { 6799 { 6800 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6801 0x152d, 0x8a22) 6802 }, 6803 { 6804 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6805 0x152d, 0x8a23) 6806 }, 6807 { 6808 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6809 0x152d, 0x8a24) 6810 }, 6811 { 6812 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6813 0x152d, 0x8a36) 6814 }, 6815 { 6816 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6817 0x152d, 0x8a37) 6818 }, 6819 { 6820 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6821 PCI_VENDOR_ID_ADAPTEC2, 0x0110) 6822 }, 6823 { 6824 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6825 PCI_VENDOR_ID_ADAPTEC2, 0x0608) 6826 }, 6827 { 6828 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6829 PCI_VENDOR_ID_ADAPTEC2, 0x0800) 6830 }, 6831 { 6832 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6833 PCI_VENDOR_ID_ADAPTEC2, 0x0801) 6834 }, 6835 { 6836 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6837 PCI_VENDOR_ID_ADAPTEC2, 0x0802) 6838 }, 6839 { 6840 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6841 PCI_VENDOR_ID_ADAPTEC2, 0x0803) 6842 }, 6843 { 6844 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6845 PCI_VENDOR_ID_ADAPTEC2, 0x0804) 6846 }, 6847 { 6848 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6849 PCI_VENDOR_ID_ADAPTEC2, 0x0805) 6850 }, 6851 { 6852 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6853 PCI_VENDOR_ID_ADAPTEC2, 0x0806) 6854 }, 6855 { 6856 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6857 PCI_VENDOR_ID_ADAPTEC2, 0x0807) 6858 }, 6859 { 6860 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6861 PCI_VENDOR_ID_ADAPTEC2, 0x0900) 6862 }, 6863 { 6864 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6865 PCI_VENDOR_ID_ADAPTEC2, 0x0901) 6866 }, 6867 { 6868 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6869 PCI_VENDOR_ID_ADAPTEC2, 0x0902) 6870 }, 6871 { 6872 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6873 PCI_VENDOR_ID_ADAPTEC2, 0x0903) 6874 }, 6875 { 6876 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6877 PCI_VENDOR_ID_ADAPTEC2, 0x0904) 6878 }, 6879 { 6880 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6881 PCI_VENDOR_ID_ADAPTEC2, 0x0905) 6882 }, 6883 { 6884 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6885 PCI_VENDOR_ID_ADAPTEC2, 0x0906) 6886 }, 6887 { 6888 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6889 PCI_VENDOR_ID_ADAPTEC2, 0x0907) 6890 }, 6891 { 6892 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6893 PCI_VENDOR_ID_ADAPTEC2, 0x0908) 6894 }, 6895 { 6896 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6897 PCI_VENDOR_ID_ADAPTEC2, 0x090a) 6898 }, 6899 { 6900 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6901 PCI_VENDOR_ID_ADAPTEC2, 0x1200) 6902 }, 6903 { 6904 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6905 PCI_VENDOR_ID_ADAPTEC2, 0x1201) 6906 }, 6907 { 6908 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6909 PCI_VENDOR_ID_ADAPTEC2, 0x1202) 6910 }, 6911 { 6912 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6913 PCI_VENDOR_ID_ADAPTEC2, 0x1280) 6914 }, 6915 { 6916 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6917 PCI_VENDOR_ID_ADAPTEC2, 0x1281) 6918 }, 6919 { 6920 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6921 PCI_VENDOR_ID_ADAPTEC2, 0x1300) 6922 }, 6923 { 6924 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6925 PCI_VENDOR_ID_ADAPTEC2, 0x1301) 6926 }, 6927 { 6928 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6929 PCI_VENDOR_ID_ADAPTEC2, 0x1380) 6930 }, 6931 { 6932 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6933 PCI_VENDOR_ID_DELL, 0x1fe0) 6934 }, 6935 { 6936 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6937 PCI_VENDOR_ID_HP, 0x0600) 6938 }, 6939 { 6940 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6941 PCI_VENDOR_ID_HP, 0x0601) 6942 }, 6943 { 6944 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6945 PCI_VENDOR_ID_HP, 0x0602) 6946 }, 6947 { 6948 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6949 PCI_VENDOR_ID_HP, 0x0603) 6950 }, 6951 { 6952 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6953 PCI_VENDOR_ID_HP, 0x0609) 6954 }, 6955 { 6956 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6957 PCI_VENDOR_ID_HP, 0x0650) 6958 }, 6959 { 6960 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6961 PCI_VENDOR_ID_HP, 0x0651) 6962 }, 6963 { 6964 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6965 PCI_VENDOR_ID_HP, 0x0652) 6966 }, 6967 { 6968 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6969 PCI_VENDOR_ID_HP, 0x0653) 6970 }, 6971 { 6972 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6973 PCI_VENDOR_ID_HP, 0x0654) 6974 }, 6975 { 6976 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6977 PCI_VENDOR_ID_HP, 0x0655) 6978 }, 6979 { 6980 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6981 PCI_VENDOR_ID_HP, 0x0700) 6982 }, 6983 { 6984 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6985 PCI_VENDOR_ID_HP, 0x0701) 6986 }, 6987 { 6988 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6989 PCI_VENDOR_ID_HP, 0x1001) 6990 }, 6991 { 6992 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6993 PCI_VENDOR_ID_HP, 0x1100) 6994 }, 6995 { 6996 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 6997 PCI_VENDOR_ID_HP, 0x1101) 6998 }, 6999 { 7000 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7001 PCI_ANY_ID, PCI_ANY_ID) 7002 }, 7003 { 0 } 7004 }; 7005 7006 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table); 7007 7008 static struct pci_driver pqi_pci_driver = { 7009 .name = DRIVER_NAME_SHORT, 7010 .id_table = pqi_pci_id_table, 7011 .probe = pqi_pci_probe, 7012 .remove = pqi_pci_remove, 7013 .shutdown = pqi_shutdown, 7014 #if defined(CONFIG_PM) 7015 .suspend = pqi_suspend, 7016 .resume = pqi_resume, 7017 #endif 7018 }; 7019 7020 static int __init pqi_init(void) 7021 { 7022 int rc; 7023 7024 pr_info(DRIVER_NAME "\n"); 7025 7026 pqi_sas_transport_template = 7027 sas_attach_transport(&pqi_sas_transport_functions); 7028 if (!pqi_sas_transport_template) 7029 return -ENODEV; 7030 7031 pqi_process_module_params(); 7032 7033 rc = pci_register_driver(&pqi_pci_driver); 7034 if (rc) 7035 sas_release_transport(pqi_sas_transport_template); 7036 7037 return rc; 7038 } 7039 7040 static void __exit pqi_cleanup(void) 7041 { 7042 pci_unregister_driver(&pqi_pci_driver); 7043 sas_release_transport(pqi_sas_transport_template); 7044 } 7045 7046 module_init(pqi_init); 7047 module_exit(pqi_cleanup); 7048 7049 static void __attribute__((unused)) verify_structures(void) 7050 { 7051 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 7052 sis_host_to_ctrl_doorbell) != 0x20); 7053 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 7054 sis_interrupt_mask) != 0x34); 7055 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 7056 sis_ctrl_to_host_doorbell) != 0x9c); 7057 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 7058 sis_ctrl_to_host_doorbell_clear) != 0xa0); 7059 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 7060 sis_driver_scratch) != 0xb0); 7061 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 7062 sis_firmware_status) != 0xbc); 7063 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 7064 sis_mailbox) != 0x1000); 7065 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 7066 pqi_registers) != 0x4000); 7067 7068 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 7069 iu_type) != 0x0); 7070 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 7071 iu_length) != 0x2); 7072 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 7073 response_queue_id) != 0x4); 7074 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 7075 work_area) != 0x6); 7076 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8); 7077 7078 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 7079 status) != 0x0); 7080 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 7081 service_response) != 0x1); 7082 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 7083 data_present) != 0x2); 7084 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 7085 reserved) != 0x3); 7086 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 7087 residual_count) != 0x4); 7088 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 7089 data_length) != 0x8); 7090 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 7091 reserved1) != 0xa); 7092 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 7093 data) != 0xc); 7094 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c); 7095 7096 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7097 data_in_result) != 0x0); 7098 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7099 data_out_result) != 0x1); 7100 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7101 reserved) != 0x2); 7102 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7103 status) != 0x5); 7104 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7105 status_qualifier) != 0x6); 7106 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7107 sense_data_length) != 0x8); 7108 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7109 response_data_length) != 0xa); 7110 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7111 data_in_transferred) != 0xc); 7112 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7113 data_out_transferred) != 0x10); 7114 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 7115 data) != 0x14); 7116 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114); 7117 7118 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7119 signature) != 0x0); 7120 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7121 function_and_status_code) != 0x8); 7122 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7123 max_admin_iq_elements) != 0x10); 7124 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7125 max_admin_oq_elements) != 0x11); 7126 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7127 admin_iq_element_length) != 0x12); 7128 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7129 admin_oq_element_length) != 0x13); 7130 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7131 max_reset_timeout) != 0x14); 7132 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7133 legacy_intx_status) != 0x18); 7134 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7135 legacy_intx_mask_set) != 0x1c); 7136 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7137 legacy_intx_mask_clear) != 0x20); 7138 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7139 device_status) != 0x40); 7140 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7141 admin_iq_pi_offset) != 0x48); 7142 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7143 admin_oq_ci_offset) != 0x50); 7144 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7145 admin_iq_element_array_addr) != 0x58); 7146 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7147 admin_oq_element_array_addr) != 0x60); 7148 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7149 admin_iq_ci_addr) != 0x68); 7150 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7151 admin_oq_pi_addr) != 0x70); 7152 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7153 admin_iq_num_elements) != 0x78); 7154 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7155 admin_oq_num_elements) != 0x79); 7156 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7157 admin_queue_int_msg_num) != 0x7a); 7158 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7159 device_error) != 0x80); 7160 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7161 error_details) != 0x88); 7162 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7163 device_reset) != 0x90); 7164 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 7165 power_action) != 0x94); 7166 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100); 7167 7168 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7169 header.iu_type) != 0); 7170 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7171 header.iu_length) != 2); 7172 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7173 header.work_area) != 6); 7174 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7175 request_id) != 8); 7176 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7177 function_code) != 10); 7178 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7179 data.report_device_capability.buffer_length) != 44); 7180 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7181 data.report_device_capability.sg_descriptor) != 48); 7182 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7183 data.create_operational_iq.queue_id) != 12); 7184 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7185 data.create_operational_iq.element_array_addr) != 16); 7186 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7187 data.create_operational_iq.ci_addr) != 24); 7188 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7189 data.create_operational_iq.num_elements) != 32); 7190 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7191 data.create_operational_iq.element_length) != 34); 7192 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7193 data.create_operational_iq.queue_protocol) != 36); 7194 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7195 data.create_operational_oq.queue_id) != 12); 7196 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7197 data.create_operational_oq.element_array_addr) != 16); 7198 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7199 data.create_operational_oq.pi_addr) != 24); 7200 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7201 data.create_operational_oq.num_elements) != 32); 7202 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7203 data.create_operational_oq.element_length) != 34); 7204 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7205 data.create_operational_oq.queue_protocol) != 36); 7206 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7207 data.create_operational_oq.int_msg_num) != 40); 7208 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7209 data.create_operational_oq.coalescing_count) != 42); 7210 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7211 data.create_operational_oq.min_coalescing_time) != 44); 7212 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7213 data.create_operational_oq.max_coalescing_time) != 48); 7214 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 7215 data.delete_operational_queue.queue_id) != 12); 7216 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64); 7217 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 7218 data.create_operational_iq) != 64 - 11); 7219 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 7220 data.create_operational_oq) != 64 - 11); 7221 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 7222 data.delete_operational_queue) != 64 - 11); 7223 7224 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7225 header.iu_type) != 0); 7226 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7227 header.iu_length) != 2); 7228 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7229 header.work_area) != 6); 7230 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7231 request_id) != 8); 7232 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7233 function_code) != 10); 7234 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7235 status) != 11); 7236 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7237 data.create_operational_iq.status_descriptor) != 12); 7238 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7239 data.create_operational_iq.iq_pi_offset) != 16); 7240 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7241 data.create_operational_oq.status_descriptor) != 12); 7242 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 7243 data.create_operational_oq.oq_ci_offset) != 16); 7244 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64); 7245 7246 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7247 header.iu_type) != 0); 7248 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7249 header.iu_length) != 2); 7250 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7251 header.response_queue_id) != 4); 7252 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7253 header.work_area) != 6); 7254 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7255 request_id) != 8); 7256 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7257 nexus_id) != 10); 7258 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7259 buffer_length) != 12); 7260 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7261 lun_number) != 16); 7262 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7263 protocol_specific) != 24); 7264 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7265 error_index) != 27); 7266 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7267 cdb) != 32); 7268 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 7269 sg_descriptors) != 64); 7270 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) != 7271 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 7272 7273 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7274 header.iu_type) != 0); 7275 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7276 header.iu_length) != 2); 7277 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7278 header.response_queue_id) != 4); 7279 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7280 header.work_area) != 6); 7281 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7282 request_id) != 8); 7283 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7284 nexus_id) != 12); 7285 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7286 buffer_length) != 16); 7287 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7288 data_encryption_key_index) != 22); 7289 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7290 encrypt_tweak_lower) != 24); 7291 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7292 encrypt_tweak_upper) != 28); 7293 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7294 cdb) != 32); 7295 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7296 error_index) != 48); 7297 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7298 num_sg_descriptors) != 50); 7299 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7300 cdb_length) != 51); 7301 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7302 lun_number) != 52); 7303 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 7304 sg_descriptors) != 64); 7305 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) != 7306 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 7307 7308 BUILD_BUG_ON(offsetof(struct pqi_io_response, 7309 header.iu_type) != 0); 7310 BUILD_BUG_ON(offsetof(struct pqi_io_response, 7311 header.iu_length) != 2); 7312 BUILD_BUG_ON(offsetof(struct pqi_io_response, 7313 request_id) != 8); 7314 BUILD_BUG_ON(offsetof(struct pqi_io_response, 7315 error_index) != 10); 7316 7317 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7318 header.iu_type) != 0); 7319 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7320 header.iu_length) != 2); 7321 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7322 header.response_queue_id) != 4); 7323 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7324 request_id) != 8); 7325 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7326 data.report_event_configuration.buffer_length) != 12); 7327 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7328 data.report_event_configuration.sg_descriptors) != 16); 7329 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7330 data.set_event_configuration.global_event_oq_id) != 10); 7331 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7332 data.set_event_configuration.buffer_length) != 12); 7333 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 7334 data.set_event_configuration.sg_descriptors) != 16); 7335 7336 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 7337 max_inbound_iu_length) != 6); 7338 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 7339 max_outbound_iu_length) != 14); 7340 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16); 7341 7342 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7343 data_length) != 0); 7344 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7345 iq_arbitration_priority_support_bitmask) != 8); 7346 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7347 maximum_aw_a) != 9); 7348 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7349 maximum_aw_b) != 10); 7350 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7351 maximum_aw_c) != 11); 7352 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7353 max_inbound_queues) != 16); 7354 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7355 max_elements_per_iq) != 18); 7356 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7357 max_iq_element_length) != 24); 7358 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7359 min_iq_element_length) != 26); 7360 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7361 max_outbound_queues) != 30); 7362 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7363 max_elements_per_oq) != 32); 7364 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7365 intr_coalescing_time_granularity) != 34); 7366 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7367 max_oq_element_length) != 36); 7368 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7369 min_oq_element_length) != 38); 7370 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 7371 iu_layer_descriptors) != 64); 7372 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576); 7373 7374 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 7375 event_type) != 0); 7376 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 7377 oq_id) != 2); 7378 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4); 7379 7380 BUILD_BUG_ON(offsetof(struct pqi_event_config, 7381 num_event_descriptors) != 2); 7382 BUILD_BUG_ON(offsetof(struct pqi_event_config, 7383 descriptors) != 4); 7384 7385 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS != 7386 ARRAY_SIZE(pqi_supported_event_types)); 7387 7388 BUILD_BUG_ON(offsetof(struct pqi_event_response, 7389 header.iu_type) != 0); 7390 BUILD_BUG_ON(offsetof(struct pqi_event_response, 7391 header.iu_length) != 2); 7392 BUILD_BUG_ON(offsetof(struct pqi_event_response, 7393 event_type) != 8); 7394 BUILD_BUG_ON(offsetof(struct pqi_event_response, 7395 event_id) != 10); 7396 BUILD_BUG_ON(offsetof(struct pqi_event_response, 7397 additional_event_id) != 12); 7398 BUILD_BUG_ON(offsetof(struct pqi_event_response, 7399 data) != 16); 7400 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32); 7401 7402 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 7403 header.iu_type) != 0); 7404 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 7405 header.iu_length) != 2); 7406 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 7407 event_type) != 8); 7408 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 7409 event_id) != 10); 7410 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 7411 additional_event_id) != 12); 7412 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16); 7413 7414 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7415 header.iu_type) != 0); 7416 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7417 header.iu_length) != 2); 7418 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7419 request_id) != 8); 7420 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7421 nexus_id) != 10); 7422 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7423 lun_number) != 16); 7424 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7425 protocol_specific) != 24); 7426 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7427 outbound_queue_id_to_manage) != 26); 7428 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7429 request_id_to_manage) != 28); 7430 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 7431 task_management_function) != 30); 7432 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32); 7433 7434 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 7435 header.iu_type) != 0); 7436 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 7437 header.iu_length) != 2); 7438 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 7439 request_id) != 8); 7440 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 7441 nexus_id) != 10); 7442 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 7443 additional_response_info) != 12); 7444 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 7445 response_code) != 15); 7446 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16); 7447 7448 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 7449 configured_logical_drive_count) != 0); 7450 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 7451 configuration_signature) != 1); 7452 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 7453 firmware_version) != 5); 7454 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 7455 extended_logical_unit_count) != 154); 7456 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 7457 firmware_build_number) != 190); 7458 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 7459 controller_mode) != 292); 7460 7461 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 7462 phys_bay_in_box) != 115); 7463 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 7464 device_type) != 120); 7465 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 7466 redundant_path_present_map) != 1736); 7467 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 7468 active_path_number) != 1738); 7469 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 7470 alternate_paths_phys_connector) != 1739); 7471 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 7472 alternate_paths_phys_box_on_port) != 1755); 7473 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 7474 current_queue_depth_limit) != 1796); 7475 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560); 7476 7477 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255); 7478 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255); 7479 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH % 7480 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 7481 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH % 7482 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 7483 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560); 7484 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH % 7485 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 7486 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560); 7487 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH % 7488 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 7489 7490 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS); 7491 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= 7492 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP); 7493 } 7494