1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * driver for Microsemi PQI-based storage controllers 4 * Copyright (c) 2019-2020 Microchip Technology Inc. and its subsidiaries 5 * Copyright (c) 2016-2018 Microsemi Corporation 6 * Copyright (c) 2016 PMC-Sierra, Inc. 7 * 8 * Questions/Comments/Bugfixes to storagedev@microchip.com 9 * 10 */ 11 12 #include <linux/module.h> 13 #include <linux/kernel.h> 14 #include <linux/pci.h> 15 #include <linux/delay.h> 16 #include <linux/interrupt.h> 17 #include <linux/sched.h> 18 #include <linux/rtc.h> 19 #include <linux/bcd.h> 20 #include <linux/reboot.h> 21 #include <linux/cciss_ioctl.h> 22 #include <linux/blk-mq-pci.h> 23 #include <scsi/scsi_host.h> 24 #include <scsi/scsi_cmnd.h> 25 #include <scsi/scsi_device.h> 26 #include <scsi/scsi_eh.h> 27 #include <scsi/scsi_transport_sas.h> 28 #include <asm/unaligned.h> 29 #include "smartpqi.h" 30 #include "smartpqi_sis.h" 31 32 #if !defined(BUILD_TIMESTAMP) 33 #define BUILD_TIMESTAMP 34 #endif 35 36 #define DRIVER_VERSION "1.2.16-012" 37 #define DRIVER_MAJOR 1 38 #define DRIVER_MINOR 2 39 #define DRIVER_RELEASE 16 40 #define DRIVER_REVISION 12 41 42 #define DRIVER_NAME "Microsemi PQI Driver (v" \ 43 DRIVER_VERSION BUILD_TIMESTAMP ")" 44 #define DRIVER_NAME_SHORT "smartpqi" 45 46 #define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor)) 47 48 MODULE_AUTHOR("Microsemi"); 49 MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version " 50 DRIVER_VERSION); 51 MODULE_VERSION(DRIVER_VERSION); 52 MODULE_LICENSE("GPL"); 53 54 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info); 55 static void pqi_ctrl_offline_worker(struct work_struct *work); 56 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info); 57 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info); 58 static void pqi_scan_start(struct Scsi_Host *shost); 59 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, 60 struct pqi_queue_group *queue_group, enum pqi_io_path path, 61 struct pqi_io_request *io_request); 62 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, 63 struct pqi_iu_header *request, unsigned int flags, 64 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs); 65 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, 66 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, 67 unsigned int cdb_length, struct pqi_queue_group *queue_group, 68 struct pqi_encryption_info *encryption_info, bool raid_bypass); 69 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info); 70 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info); 71 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info); 72 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, 73 u32 bytes_requested); 74 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info); 75 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info); 76 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 77 struct pqi_scsi_dev *device, unsigned long timeout_secs); 78 79 /* for flags argument to pqi_submit_raid_request_synchronous() */ 80 #define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1 81 82 static struct scsi_transport_template *pqi_sas_transport_template; 83 84 static atomic_t pqi_controller_count = ATOMIC_INIT(0); 85 86 enum pqi_lockup_action { 87 NONE, 88 REBOOT, 89 PANIC 90 }; 91 92 static enum pqi_lockup_action pqi_lockup_action = NONE; 93 94 static struct { 95 enum pqi_lockup_action action; 96 char *name; 97 } pqi_lockup_actions[] = { 98 { 99 .action = NONE, 100 .name = "none", 101 }, 102 { 103 .action = REBOOT, 104 .name = "reboot", 105 }, 106 { 107 .action = PANIC, 108 .name = "panic", 109 }, 110 }; 111 112 static unsigned int pqi_supported_event_types[] = { 113 PQI_EVENT_TYPE_HOTPLUG, 114 PQI_EVENT_TYPE_HARDWARE, 115 PQI_EVENT_TYPE_PHYSICAL_DEVICE, 116 PQI_EVENT_TYPE_LOGICAL_DEVICE, 117 PQI_EVENT_TYPE_OFA, 118 PQI_EVENT_TYPE_AIO_STATE_CHANGE, 119 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE, 120 }; 121 122 static int pqi_disable_device_id_wildcards; 123 module_param_named(disable_device_id_wildcards, 124 pqi_disable_device_id_wildcards, int, 0644); 125 MODULE_PARM_DESC(disable_device_id_wildcards, 126 "Disable device ID wildcards."); 127 128 static int pqi_disable_heartbeat; 129 module_param_named(disable_heartbeat, 130 pqi_disable_heartbeat, int, 0644); 131 MODULE_PARM_DESC(disable_heartbeat, 132 "Disable heartbeat."); 133 134 static int pqi_disable_ctrl_shutdown; 135 module_param_named(disable_ctrl_shutdown, 136 pqi_disable_ctrl_shutdown, int, 0644); 137 MODULE_PARM_DESC(disable_ctrl_shutdown, 138 "Disable controller shutdown when controller locked up."); 139 140 static char *pqi_lockup_action_param; 141 module_param_named(lockup_action, 142 pqi_lockup_action_param, charp, 0644); 143 MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n" 144 "\t\tSupported: none, reboot, panic\n" 145 "\t\tDefault: none"); 146 147 static int pqi_expose_ld_first; 148 module_param_named(expose_ld_first, 149 pqi_expose_ld_first, int, 0644); 150 MODULE_PARM_DESC(expose_ld_first, 151 "Expose logical drives before physical drives."); 152 153 static int pqi_hide_vsep; 154 module_param_named(hide_vsep, 155 pqi_hide_vsep, int, 0644); 156 MODULE_PARM_DESC(hide_vsep, 157 "Hide the virtual SEP for direct attached drives."); 158 159 static char *raid_levels[] = { 160 "RAID-0", 161 "RAID-4", 162 "RAID-1(1+0)", 163 "RAID-5", 164 "RAID-5+1", 165 "RAID-ADG", 166 "RAID-1(ADM)", 167 }; 168 169 static char *pqi_raid_level_to_string(u8 raid_level) 170 { 171 if (raid_level < ARRAY_SIZE(raid_levels)) 172 return raid_levels[raid_level]; 173 174 return "RAID UNKNOWN"; 175 } 176 177 #define SA_RAID_0 0 178 #define SA_RAID_4 1 179 #define SA_RAID_1 2 /* also used for RAID 10 */ 180 #define SA_RAID_5 3 /* also used for RAID 50 */ 181 #define SA_RAID_51 4 182 #define SA_RAID_6 5 /* also used for RAID 60 */ 183 #define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 184 #define SA_RAID_MAX SA_RAID_ADM 185 #define SA_RAID_UNKNOWN 0xff 186 187 static inline void pqi_scsi_done(struct scsi_cmnd *scmd) 188 { 189 pqi_prep_for_scsi_done(scmd); 190 scmd->scsi_done(scmd); 191 } 192 193 static inline void pqi_disable_write_same(struct scsi_device *sdev) 194 { 195 sdev->no_write_same = 1; 196 } 197 198 static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2) 199 { 200 return memcmp(scsi3addr1, scsi3addr2, 8) == 0; 201 } 202 203 static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device) 204 { 205 return !device->is_physical_device; 206 } 207 208 static inline bool pqi_is_external_raid_addr(u8 *scsi3addr) 209 { 210 return scsi3addr[2] != 0; 211 } 212 213 static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info) 214 { 215 return !ctrl_info->controller_online; 216 } 217 218 static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info) 219 { 220 if (ctrl_info->controller_online) 221 if (!sis_is_firmware_running(ctrl_info)) 222 pqi_take_ctrl_offline(ctrl_info); 223 } 224 225 static inline bool pqi_is_hba_lunid(u8 *scsi3addr) 226 { 227 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID); 228 } 229 230 static inline enum pqi_ctrl_mode pqi_get_ctrl_mode( 231 struct pqi_ctrl_info *ctrl_info) 232 { 233 return sis_read_driver_scratch(ctrl_info); 234 } 235 236 static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info, 237 enum pqi_ctrl_mode mode) 238 { 239 sis_write_driver_scratch(ctrl_info, mode); 240 } 241 242 static inline void pqi_ctrl_block_device_reset(struct pqi_ctrl_info *ctrl_info) 243 { 244 ctrl_info->block_device_reset = true; 245 } 246 247 static inline bool pqi_device_reset_blocked(struct pqi_ctrl_info *ctrl_info) 248 { 249 return ctrl_info->block_device_reset; 250 } 251 252 static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info) 253 { 254 return ctrl_info->block_requests; 255 } 256 257 static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info) 258 { 259 ctrl_info->block_requests = true; 260 scsi_block_requests(ctrl_info->scsi_host); 261 } 262 263 static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info) 264 { 265 ctrl_info->block_requests = false; 266 wake_up_all(&ctrl_info->block_requests_wait); 267 pqi_retry_raid_bypass_requests(ctrl_info); 268 scsi_unblock_requests(ctrl_info->scsi_host); 269 } 270 271 static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info, 272 unsigned long timeout_msecs) 273 { 274 unsigned long remaining_msecs; 275 276 if (!pqi_ctrl_blocked(ctrl_info)) 277 return timeout_msecs; 278 279 atomic_inc(&ctrl_info->num_blocked_threads); 280 281 if (timeout_msecs == NO_TIMEOUT) { 282 wait_event(ctrl_info->block_requests_wait, 283 !pqi_ctrl_blocked(ctrl_info)); 284 remaining_msecs = timeout_msecs; 285 } else { 286 unsigned long remaining_jiffies; 287 288 remaining_jiffies = 289 wait_event_timeout(ctrl_info->block_requests_wait, 290 !pqi_ctrl_blocked(ctrl_info), 291 msecs_to_jiffies(timeout_msecs)); 292 remaining_msecs = jiffies_to_msecs(remaining_jiffies); 293 } 294 295 atomic_dec(&ctrl_info->num_blocked_threads); 296 297 return remaining_msecs; 298 } 299 300 static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info) 301 { 302 while (atomic_read(&ctrl_info->num_busy_threads) > 303 atomic_read(&ctrl_info->num_blocked_threads)) 304 usleep_range(1000, 2000); 305 } 306 307 static inline bool pqi_device_offline(struct pqi_scsi_dev *device) 308 { 309 return device->device_offline; 310 } 311 312 static inline void pqi_device_reset_start(struct pqi_scsi_dev *device) 313 { 314 device->in_reset = true; 315 } 316 317 static inline void pqi_device_reset_done(struct pqi_scsi_dev *device) 318 { 319 device->in_reset = false; 320 } 321 322 static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device) 323 { 324 return device->in_reset; 325 } 326 327 static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info) 328 { 329 ctrl_info->in_ofa = true; 330 } 331 332 static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info) 333 { 334 ctrl_info->in_ofa = false; 335 } 336 337 static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info) 338 { 339 return ctrl_info->in_ofa; 340 } 341 342 static inline void pqi_device_remove_start(struct pqi_scsi_dev *device) 343 { 344 device->in_remove = true; 345 } 346 347 static inline bool pqi_device_in_remove(struct pqi_scsi_dev *device) 348 { 349 return device->in_remove; 350 } 351 352 static inline void pqi_ctrl_shutdown_start(struct pqi_ctrl_info *ctrl_info) 353 { 354 ctrl_info->in_shutdown = true; 355 } 356 357 static inline bool pqi_ctrl_in_shutdown(struct pqi_ctrl_info *ctrl_info) 358 { 359 return ctrl_info->in_shutdown; 360 } 361 362 static inline void pqi_schedule_rescan_worker_with_delay( 363 struct pqi_ctrl_info *ctrl_info, unsigned long delay) 364 { 365 if (pqi_ctrl_offline(ctrl_info)) 366 return; 367 if (pqi_ctrl_in_ofa(ctrl_info)) 368 return; 369 370 schedule_delayed_work(&ctrl_info->rescan_work, delay); 371 } 372 373 static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info) 374 { 375 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0); 376 } 377 378 #define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ) 379 380 static inline void pqi_schedule_rescan_worker_delayed( 381 struct pqi_ctrl_info *ctrl_info) 382 { 383 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY); 384 } 385 386 static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info) 387 { 388 cancel_delayed_work_sync(&ctrl_info->rescan_work); 389 } 390 391 static inline void pqi_cancel_event_worker(struct pqi_ctrl_info *ctrl_info) 392 { 393 cancel_work_sync(&ctrl_info->event_work); 394 } 395 396 static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info) 397 { 398 if (!ctrl_info->heartbeat_counter) 399 return 0; 400 401 return readl(ctrl_info->heartbeat_counter); 402 } 403 404 static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info) 405 { 406 if (!ctrl_info->soft_reset_status) 407 return 0; 408 409 return readb(ctrl_info->soft_reset_status); 410 } 411 412 static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info, 413 u8 clear) 414 { 415 u8 status; 416 417 if (!ctrl_info->soft_reset_status) 418 return; 419 420 status = pqi_read_soft_reset_status(ctrl_info); 421 status &= ~clear; 422 writeb(status, ctrl_info->soft_reset_status); 423 } 424 425 static int pqi_map_single(struct pci_dev *pci_dev, 426 struct pqi_sg_descriptor *sg_descriptor, void *buffer, 427 size_t buffer_length, enum dma_data_direction data_direction) 428 { 429 dma_addr_t bus_address; 430 431 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE) 432 return 0; 433 434 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length, 435 data_direction); 436 if (dma_mapping_error(&pci_dev->dev, bus_address)) 437 return -ENOMEM; 438 439 put_unaligned_le64((u64)bus_address, &sg_descriptor->address); 440 put_unaligned_le32(buffer_length, &sg_descriptor->length); 441 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 442 443 return 0; 444 } 445 446 static void pqi_pci_unmap(struct pci_dev *pci_dev, 447 struct pqi_sg_descriptor *descriptors, int num_descriptors, 448 enum dma_data_direction data_direction) 449 { 450 int i; 451 452 if (data_direction == DMA_NONE) 453 return; 454 455 for (i = 0; i < num_descriptors; i++) 456 dma_unmap_single(&pci_dev->dev, 457 (dma_addr_t)get_unaligned_le64(&descriptors[i].address), 458 get_unaligned_le32(&descriptors[i].length), 459 data_direction); 460 } 461 462 static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info, 463 struct pqi_raid_path_request *request, u8 cmd, 464 u8 *scsi3addr, void *buffer, size_t buffer_length, 465 u16 vpd_page, enum dma_data_direction *dir) 466 { 467 u8 *cdb; 468 size_t cdb_length = buffer_length; 469 470 memset(request, 0, sizeof(*request)); 471 472 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 473 put_unaligned_le16(offsetof(struct pqi_raid_path_request, 474 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH, 475 &request->header.iu_length); 476 put_unaligned_le32(buffer_length, &request->buffer_length); 477 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number)); 478 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 479 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 480 481 cdb = request->cdb; 482 483 switch (cmd) { 484 case INQUIRY: 485 request->data_direction = SOP_READ_FLAG; 486 cdb[0] = INQUIRY; 487 if (vpd_page & VPD_PAGE) { 488 cdb[1] = 0x1; 489 cdb[2] = (u8)vpd_page; 490 } 491 cdb[4] = (u8)cdb_length; 492 break; 493 case CISS_REPORT_LOG: 494 case CISS_REPORT_PHYS: 495 request->data_direction = SOP_READ_FLAG; 496 cdb[0] = cmd; 497 if (cmd == CISS_REPORT_PHYS) 498 cdb[1] = CISS_REPORT_PHYS_FLAG_OTHER; 499 else 500 cdb[1] = CISS_REPORT_LOG_FLAG_UNIQUE_LUN_ID; 501 put_unaligned_be32(cdb_length, &cdb[6]); 502 break; 503 case CISS_GET_RAID_MAP: 504 request->data_direction = SOP_READ_FLAG; 505 cdb[0] = CISS_READ; 506 cdb[1] = CISS_GET_RAID_MAP; 507 put_unaligned_be32(cdb_length, &cdb[6]); 508 break; 509 case SA_FLUSH_CACHE: 510 request->data_direction = SOP_WRITE_FLAG; 511 cdb[0] = BMIC_WRITE; 512 cdb[6] = BMIC_FLUSH_CACHE; 513 put_unaligned_be16(cdb_length, &cdb[7]); 514 break; 515 case BMIC_SENSE_DIAG_OPTIONS: 516 cdb_length = 0; 517 fallthrough; 518 case BMIC_IDENTIFY_CONTROLLER: 519 case BMIC_IDENTIFY_PHYSICAL_DEVICE: 520 case BMIC_SENSE_SUBSYSTEM_INFORMATION: 521 request->data_direction = SOP_READ_FLAG; 522 cdb[0] = BMIC_READ; 523 cdb[6] = cmd; 524 put_unaligned_be16(cdb_length, &cdb[7]); 525 break; 526 case BMIC_SET_DIAG_OPTIONS: 527 cdb_length = 0; 528 fallthrough; 529 case BMIC_WRITE_HOST_WELLNESS: 530 request->data_direction = SOP_WRITE_FLAG; 531 cdb[0] = BMIC_WRITE; 532 cdb[6] = cmd; 533 put_unaligned_be16(cdb_length, &cdb[7]); 534 break; 535 case BMIC_CSMI_PASSTHRU: 536 request->data_direction = SOP_BIDIRECTIONAL; 537 cdb[0] = BMIC_WRITE; 538 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU; 539 cdb[6] = cmd; 540 put_unaligned_be16(cdb_length, &cdb[7]); 541 break; 542 default: 543 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n", cmd); 544 break; 545 } 546 547 switch (request->data_direction) { 548 case SOP_READ_FLAG: 549 *dir = DMA_FROM_DEVICE; 550 break; 551 case SOP_WRITE_FLAG: 552 *dir = DMA_TO_DEVICE; 553 break; 554 case SOP_NO_DIRECTION_FLAG: 555 *dir = DMA_NONE; 556 break; 557 default: 558 *dir = DMA_BIDIRECTIONAL; 559 break; 560 } 561 562 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0], 563 buffer, buffer_length, *dir); 564 } 565 566 static inline void pqi_reinit_io_request(struct pqi_io_request *io_request) 567 { 568 io_request->scmd = NULL; 569 io_request->status = 0; 570 io_request->error_info = NULL; 571 io_request->raid_bypass = false; 572 } 573 574 static struct pqi_io_request *pqi_alloc_io_request( 575 struct pqi_ctrl_info *ctrl_info) 576 { 577 struct pqi_io_request *io_request; 578 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */ 579 580 while (1) { 581 io_request = &ctrl_info->io_request_pool[i]; 582 if (atomic_inc_return(&io_request->refcount) == 1) 583 break; 584 atomic_dec(&io_request->refcount); 585 i = (i + 1) % ctrl_info->max_io_slots; 586 } 587 588 /* benignly racy */ 589 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots; 590 591 pqi_reinit_io_request(io_request); 592 593 return io_request; 594 } 595 596 static void pqi_free_io_request(struct pqi_io_request *io_request) 597 { 598 atomic_dec(&io_request->refcount); 599 } 600 601 static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd, 602 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page, 603 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) 604 { 605 int rc; 606 struct pqi_raid_path_request request; 607 enum dma_data_direction dir; 608 609 rc = pqi_build_raid_path_request(ctrl_info, &request, 610 cmd, scsi3addr, buffer, 611 buffer_length, vpd_page, &dir); 612 if (rc) 613 return rc; 614 615 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 616 error_info, timeout_msecs); 617 618 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); 619 620 return rc; 621 } 622 623 /* helper functions for pqi_send_scsi_raid_request */ 624 625 static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info, 626 u8 cmd, void *buffer, size_t buffer_length) 627 { 628 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID, 629 buffer, buffer_length, 0, NULL, NO_TIMEOUT); 630 } 631 632 static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info, 633 u8 cmd, void *buffer, size_t buffer_length, 634 struct pqi_raid_error_info *error_info) 635 { 636 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID, 637 buffer, buffer_length, 0, error_info, NO_TIMEOUT); 638 } 639 640 static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info, 641 struct bmic_identify_controller *buffer) 642 { 643 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER, 644 buffer, sizeof(*buffer)); 645 } 646 647 static inline int pqi_sense_subsystem_info(struct pqi_ctrl_info *ctrl_info, 648 struct bmic_sense_subsystem_info *sense_info) 649 { 650 return pqi_send_ctrl_raid_request(ctrl_info, 651 BMIC_SENSE_SUBSYSTEM_INFORMATION, sense_info, 652 sizeof(*sense_info)); 653 } 654 655 static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info, 656 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length) 657 { 658 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr, 659 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT); 660 } 661 662 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info, 663 struct pqi_scsi_dev *device, 664 struct bmic_identify_physical_device *buffer, size_t buffer_length) 665 { 666 int rc; 667 enum dma_data_direction dir; 668 u16 bmic_device_index; 669 struct pqi_raid_path_request request; 670 671 rc = pqi_build_raid_path_request(ctrl_info, &request, 672 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer, 673 buffer_length, 0, &dir); 674 if (rc) 675 return rc; 676 677 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr); 678 request.cdb[2] = (u8)bmic_device_index; 679 request.cdb[9] = (u8)(bmic_device_index >> 8); 680 681 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 682 0, NULL, NO_TIMEOUT); 683 684 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); 685 686 return rc; 687 } 688 689 static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info, 690 enum bmic_flush_cache_shutdown_event shutdown_event) 691 { 692 int rc; 693 struct bmic_flush_cache *flush_cache; 694 695 /* 696 * Don't bother trying to flush the cache if the controller is 697 * locked up. 698 */ 699 if (pqi_ctrl_offline(ctrl_info)) 700 return -ENXIO; 701 702 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL); 703 if (!flush_cache) 704 return -ENOMEM; 705 706 flush_cache->shutdown_event = shutdown_event; 707 708 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache, 709 sizeof(*flush_cache)); 710 711 kfree(flush_cache); 712 713 return rc; 714 } 715 716 int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info, 717 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length, 718 struct pqi_raid_error_info *error_info) 719 { 720 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU, 721 buffer, buffer_length, error_info); 722 } 723 724 #define PQI_FETCH_PTRAID_DATA (1 << 31) 725 726 static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info) 727 { 728 int rc; 729 struct bmic_diag_options *diag; 730 731 diag = kzalloc(sizeof(*diag), GFP_KERNEL); 732 if (!diag) 733 return -ENOMEM; 734 735 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS, 736 diag, sizeof(*diag)); 737 if (rc) 738 goto out; 739 740 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA); 741 742 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS, diag, 743 sizeof(*diag)); 744 745 out: 746 kfree(diag); 747 748 return rc; 749 } 750 751 static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info, 752 void *buffer, size_t buffer_length) 753 { 754 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS, 755 buffer, buffer_length); 756 } 757 758 #pragma pack(1) 759 760 struct bmic_host_wellness_driver_version { 761 u8 start_tag[4]; 762 u8 driver_version_tag[2]; 763 __le16 driver_version_length; 764 char driver_version[32]; 765 u8 dont_write_tag[2]; 766 u8 end_tag[2]; 767 }; 768 769 #pragma pack() 770 771 static int pqi_write_driver_version_to_host_wellness( 772 struct pqi_ctrl_info *ctrl_info) 773 { 774 int rc; 775 struct bmic_host_wellness_driver_version *buffer; 776 size_t buffer_length; 777 778 buffer_length = sizeof(*buffer); 779 780 buffer = kmalloc(buffer_length, GFP_KERNEL); 781 if (!buffer) 782 return -ENOMEM; 783 784 buffer->start_tag[0] = '<'; 785 buffer->start_tag[1] = 'H'; 786 buffer->start_tag[2] = 'W'; 787 buffer->start_tag[3] = '>'; 788 buffer->driver_version_tag[0] = 'D'; 789 buffer->driver_version_tag[1] = 'V'; 790 put_unaligned_le16(sizeof(buffer->driver_version), 791 &buffer->driver_version_length); 792 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION, 793 sizeof(buffer->driver_version) - 1); 794 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0'; 795 buffer->dont_write_tag[0] = 'D'; 796 buffer->dont_write_tag[1] = 'W'; 797 buffer->end_tag[0] = 'Z'; 798 buffer->end_tag[1] = 'Z'; 799 800 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length); 801 802 kfree(buffer); 803 804 return rc; 805 } 806 807 #pragma pack(1) 808 809 struct bmic_host_wellness_time { 810 u8 start_tag[4]; 811 u8 time_tag[2]; 812 __le16 time_length; 813 u8 time[8]; 814 u8 dont_write_tag[2]; 815 u8 end_tag[2]; 816 }; 817 818 #pragma pack() 819 820 static int pqi_write_current_time_to_host_wellness( 821 struct pqi_ctrl_info *ctrl_info) 822 { 823 int rc; 824 struct bmic_host_wellness_time *buffer; 825 size_t buffer_length; 826 time64_t local_time; 827 unsigned int year; 828 struct tm tm; 829 830 buffer_length = sizeof(*buffer); 831 832 buffer = kmalloc(buffer_length, GFP_KERNEL); 833 if (!buffer) 834 return -ENOMEM; 835 836 buffer->start_tag[0] = '<'; 837 buffer->start_tag[1] = 'H'; 838 buffer->start_tag[2] = 'W'; 839 buffer->start_tag[3] = '>'; 840 buffer->time_tag[0] = 'T'; 841 buffer->time_tag[1] = 'D'; 842 put_unaligned_le16(sizeof(buffer->time), 843 &buffer->time_length); 844 845 local_time = ktime_get_real_seconds(); 846 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm); 847 year = tm.tm_year + 1900; 848 849 buffer->time[0] = bin2bcd(tm.tm_hour); 850 buffer->time[1] = bin2bcd(tm.tm_min); 851 buffer->time[2] = bin2bcd(tm.tm_sec); 852 buffer->time[3] = 0; 853 buffer->time[4] = bin2bcd(tm.tm_mon + 1); 854 buffer->time[5] = bin2bcd(tm.tm_mday); 855 buffer->time[6] = bin2bcd(year / 100); 856 buffer->time[7] = bin2bcd(year % 100); 857 858 buffer->dont_write_tag[0] = 'D'; 859 buffer->dont_write_tag[1] = 'W'; 860 buffer->end_tag[0] = 'Z'; 861 buffer->end_tag[1] = 'Z'; 862 863 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length); 864 865 kfree(buffer); 866 867 return rc; 868 } 869 870 #define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ) 871 872 static void pqi_update_time_worker(struct work_struct *work) 873 { 874 int rc; 875 struct pqi_ctrl_info *ctrl_info; 876 877 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, 878 update_time_work); 879 880 if (pqi_ctrl_offline(ctrl_info)) 881 return; 882 883 rc = pqi_write_current_time_to_host_wellness(ctrl_info); 884 if (rc) 885 dev_warn(&ctrl_info->pci_dev->dev, 886 "error updating time on controller\n"); 887 888 schedule_delayed_work(&ctrl_info->update_time_work, 889 PQI_UPDATE_TIME_WORK_INTERVAL); 890 } 891 892 static inline void pqi_schedule_update_time_worker( 893 struct pqi_ctrl_info *ctrl_info) 894 { 895 schedule_delayed_work(&ctrl_info->update_time_work, 0); 896 } 897 898 static inline void pqi_cancel_update_time_worker( 899 struct pqi_ctrl_info *ctrl_info) 900 { 901 cancel_delayed_work_sync(&ctrl_info->update_time_work); 902 } 903 904 static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, 905 void *buffer, size_t buffer_length) 906 { 907 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer, 908 buffer_length); 909 } 910 911 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, 912 void **buffer) 913 { 914 int rc; 915 size_t lun_list_length; 916 size_t lun_data_length; 917 size_t new_lun_list_length; 918 void *lun_data = NULL; 919 struct report_lun_header *report_lun_header; 920 921 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL); 922 if (!report_lun_header) { 923 rc = -ENOMEM; 924 goto out; 925 } 926 927 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header, 928 sizeof(*report_lun_header)); 929 if (rc) 930 goto out; 931 932 lun_list_length = get_unaligned_be32(&report_lun_header->list_length); 933 934 again: 935 lun_data_length = sizeof(struct report_lun_header) + lun_list_length; 936 937 lun_data = kmalloc(lun_data_length, GFP_KERNEL); 938 if (!lun_data) { 939 rc = -ENOMEM; 940 goto out; 941 } 942 943 if (lun_list_length == 0) { 944 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header)); 945 goto out; 946 } 947 948 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length); 949 if (rc) 950 goto out; 951 952 new_lun_list_length = get_unaligned_be32( 953 &((struct report_lun_header *)lun_data)->list_length); 954 955 if (new_lun_list_length > lun_list_length) { 956 lun_list_length = new_lun_list_length; 957 kfree(lun_data); 958 goto again; 959 } 960 961 out: 962 kfree(report_lun_header); 963 964 if (rc) { 965 kfree(lun_data); 966 lun_data = NULL; 967 } 968 969 *buffer = lun_data; 970 971 return rc; 972 } 973 974 static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info, 975 void **buffer) 976 { 977 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS, 978 buffer); 979 } 980 981 static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info, 982 void **buffer) 983 { 984 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer); 985 } 986 987 static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info, 988 struct report_phys_lun_extended **physdev_list, 989 struct report_log_lun_extended **logdev_list) 990 { 991 int rc; 992 size_t logdev_list_length; 993 size_t logdev_data_length; 994 struct report_log_lun_extended *internal_logdev_list; 995 struct report_log_lun_extended *logdev_data; 996 struct report_lun_header report_lun_header; 997 998 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list); 999 if (rc) 1000 dev_err(&ctrl_info->pci_dev->dev, 1001 "report physical LUNs failed\n"); 1002 1003 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list); 1004 if (rc) 1005 dev_err(&ctrl_info->pci_dev->dev, 1006 "report logical LUNs failed\n"); 1007 1008 /* 1009 * Tack the controller itself onto the end of the logical device list. 1010 */ 1011 1012 logdev_data = *logdev_list; 1013 1014 if (logdev_data) { 1015 logdev_list_length = 1016 get_unaligned_be32(&logdev_data->header.list_length); 1017 } else { 1018 memset(&report_lun_header, 0, sizeof(report_lun_header)); 1019 logdev_data = 1020 (struct report_log_lun_extended *)&report_lun_header; 1021 logdev_list_length = 0; 1022 } 1023 1024 logdev_data_length = sizeof(struct report_lun_header) + 1025 logdev_list_length; 1026 1027 internal_logdev_list = kmalloc(logdev_data_length + 1028 sizeof(struct report_log_lun_extended), GFP_KERNEL); 1029 if (!internal_logdev_list) { 1030 kfree(*logdev_list); 1031 *logdev_list = NULL; 1032 return -ENOMEM; 1033 } 1034 1035 memcpy(internal_logdev_list, logdev_data, logdev_data_length); 1036 memset((u8 *)internal_logdev_list + logdev_data_length, 0, 1037 sizeof(struct report_log_lun_extended_entry)); 1038 put_unaligned_be32(logdev_list_length + 1039 sizeof(struct report_log_lun_extended_entry), 1040 &internal_logdev_list->header.list_length); 1041 1042 kfree(*logdev_list); 1043 *logdev_list = internal_logdev_list; 1044 1045 return 0; 1046 } 1047 1048 static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device, 1049 int bus, int target, int lun) 1050 { 1051 device->bus = bus; 1052 device->target = target; 1053 device->lun = lun; 1054 } 1055 1056 static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device) 1057 { 1058 u8 *scsi3addr; 1059 u32 lunid; 1060 int bus; 1061 int target; 1062 int lun; 1063 1064 scsi3addr = device->scsi3addr; 1065 lunid = get_unaligned_le32(scsi3addr); 1066 1067 if (pqi_is_hba_lunid(scsi3addr)) { 1068 /* The specified device is the controller. */ 1069 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff); 1070 device->target_lun_valid = true; 1071 return; 1072 } 1073 1074 if (pqi_is_logical_device(device)) { 1075 if (device->is_external_raid_device) { 1076 bus = PQI_EXTERNAL_RAID_VOLUME_BUS; 1077 target = (lunid >> 16) & 0x3fff; 1078 lun = lunid & 0xff; 1079 } else { 1080 bus = PQI_RAID_VOLUME_BUS; 1081 target = 0; 1082 lun = lunid & 0x3fff; 1083 } 1084 pqi_set_bus_target_lun(device, bus, target, lun); 1085 device->target_lun_valid = true; 1086 return; 1087 } 1088 1089 /* 1090 * Defer target and LUN assignment for non-controller physical devices 1091 * because the SAS transport layer will make these assignments later. 1092 */ 1093 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0); 1094 } 1095 1096 static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info, 1097 struct pqi_scsi_dev *device) 1098 { 1099 int rc; 1100 u8 raid_level; 1101 u8 *buffer; 1102 1103 raid_level = SA_RAID_UNKNOWN; 1104 1105 buffer = kmalloc(64, GFP_KERNEL); 1106 if (buffer) { 1107 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1108 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64); 1109 if (rc == 0) { 1110 raid_level = buffer[8]; 1111 if (raid_level > SA_RAID_MAX) 1112 raid_level = SA_RAID_UNKNOWN; 1113 } 1114 kfree(buffer); 1115 } 1116 1117 device->raid_level = raid_level; 1118 } 1119 1120 static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info, 1121 struct pqi_scsi_dev *device, struct raid_map *raid_map) 1122 { 1123 char *err_msg; 1124 u32 raid_map_size; 1125 u32 r5or6_blocks_per_row; 1126 1127 raid_map_size = get_unaligned_le32(&raid_map->structure_size); 1128 1129 if (raid_map_size < offsetof(struct raid_map, disk_data)) { 1130 err_msg = "RAID map too small"; 1131 goto bad_raid_map; 1132 } 1133 1134 if (device->raid_level == SA_RAID_1) { 1135 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) { 1136 err_msg = "invalid RAID-1 map"; 1137 goto bad_raid_map; 1138 } 1139 } else if (device->raid_level == SA_RAID_ADM) { 1140 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) { 1141 err_msg = "invalid RAID-1(ADM) map"; 1142 goto bad_raid_map; 1143 } 1144 } else if ((device->raid_level == SA_RAID_5 || 1145 device->raid_level == SA_RAID_6) && 1146 get_unaligned_le16(&raid_map->layout_map_count) > 1) { 1147 /* RAID 50/60 */ 1148 r5or6_blocks_per_row = 1149 get_unaligned_le16(&raid_map->strip_size) * 1150 get_unaligned_le16(&raid_map->data_disks_per_row); 1151 if (r5or6_blocks_per_row == 0) { 1152 err_msg = "invalid RAID-5 or RAID-6 map"; 1153 goto bad_raid_map; 1154 } 1155 } 1156 1157 return 0; 1158 1159 bad_raid_map: 1160 dev_warn(&ctrl_info->pci_dev->dev, 1161 "logical device %08x%08x %s\n", 1162 *((u32 *)&device->scsi3addr), 1163 *((u32 *)&device->scsi3addr[4]), err_msg); 1164 1165 return -EINVAL; 1166 } 1167 1168 static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info, 1169 struct pqi_scsi_dev *device) 1170 { 1171 int rc; 1172 u32 raid_map_size; 1173 struct raid_map *raid_map; 1174 1175 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL); 1176 if (!raid_map) 1177 return -ENOMEM; 1178 1179 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, 1180 device->scsi3addr, raid_map, sizeof(*raid_map), 1181 0, NULL, NO_TIMEOUT); 1182 1183 if (rc) 1184 goto error; 1185 1186 raid_map_size = get_unaligned_le32(&raid_map->structure_size); 1187 1188 if (raid_map_size > sizeof(*raid_map)) { 1189 1190 kfree(raid_map); 1191 1192 raid_map = kmalloc(raid_map_size, GFP_KERNEL); 1193 if (!raid_map) 1194 return -ENOMEM; 1195 1196 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, 1197 device->scsi3addr, raid_map, raid_map_size, 1198 0, NULL, NO_TIMEOUT); 1199 if (rc) 1200 goto error; 1201 1202 if (get_unaligned_le32(&raid_map->structure_size) 1203 != raid_map_size) { 1204 dev_warn(&ctrl_info->pci_dev->dev, 1205 "Requested %d bytes, received %d bytes", 1206 raid_map_size, 1207 get_unaligned_le32(&raid_map->structure_size)); 1208 goto error; 1209 } 1210 } 1211 1212 rc = pqi_validate_raid_map(ctrl_info, device, raid_map); 1213 if (rc) 1214 goto error; 1215 1216 device->raid_map = raid_map; 1217 1218 return 0; 1219 1220 error: 1221 kfree(raid_map); 1222 1223 return rc; 1224 } 1225 1226 static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info, 1227 struct pqi_scsi_dev *device) 1228 { 1229 int rc; 1230 u8 *buffer; 1231 u8 bypass_status; 1232 1233 buffer = kmalloc(64, GFP_KERNEL); 1234 if (!buffer) 1235 return; 1236 1237 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1238 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64); 1239 if (rc) 1240 goto out; 1241 1242 #define RAID_BYPASS_STATUS 4 1243 #define RAID_BYPASS_CONFIGURED 0x1 1244 #define RAID_BYPASS_ENABLED 0x2 1245 1246 bypass_status = buffer[RAID_BYPASS_STATUS]; 1247 device->raid_bypass_configured = 1248 (bypass_status & RAID_BYPASS_CONFIGURED) != 0; 1249 if (device->raid_bypass_configured && 1250 (bypass_status & RAID_BYPASS_ENABLED) && 1251 pqi_get_raid_map(ctrl_info, device) == 0) 1252 device->raid_bypass_enabled = true; 1253 1254 out: 1255 kfree(buffer); 1256 } 1257 1258 /* 1259 * Use vendor-specific VPD to determine online/offline status of a volume. 1260 */ 1261 1262 static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info, 1263 struct pqi_scsi_dev *device) 1264 { 1265 int rc; 1266 size_t page_length; 1267 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE; 1268 bool volume_offline = true; 1269 u32 volume_flags; 1270 struct ciss_vpd_logical_volume_status *vpd; 1271 1272 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL); 1273 if (!vpd) 1274 goto no_buffer; 1275 1276 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1277 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd)); 1278 if (rc) 1279 goto out; 1280 1281 if (vpd->page_code != CISS_VPD_LV_STATUS) 1282 goto out; 1283 1284 page_length = offsetof(struct ciss_vpd_logical_volume_status, 1285 volume_status) + vpd->page_length; 1286 if (page_length < sizeof(*vpd)) 1287 goto out; 1288 1289 volume_status = vpd->volume_status; 1290 volume_flags = get_unaligned_be32(&vpd->flags); 1291 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0; 1292 1293 out: 1294 kfree(vpd); 1295 no_buffer: 1296 device->volume_status = volume_status; 1297 device->volume_offline = volume_offline; 1298 } 1299 1300 static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info, 1301 struct pqi_scsi_dev *device, 1302 struct bmic_identify_physical_device *id_phys) 1303 { 1304 int rc; 1305 1306 memset(id_phys, 0, sizeof(*id_phys)); 1307 1308 rc = pqi_identify_physical_device(ctrl_info, device, 1309 id_phys, sizeof(*id_phys)); 1310 if (rc) { 1311 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH; 1312 return rc; 1313 } 1314 1315 scsi_sanitize_inquiry_string(&id_phys->model[0], 8); 1316 scsi_sanitize_inquiry_string(&id_phys->model[8], 16); 1317 1318 memcpy(device->vendor, &id_phys->model[0], sizeof(device->vendor)); 1319 memcpy(device->model, &id_phys->model[8], sizeof(device->model)); 1320 1321 device->box_index = id_phys->box_index; 1322 device->phys_box_on_bus = id_phys->phys_box_on_bus; 1323 device->phy_connected_dev_type = id_phys->phy_connected_dev_type[0]; 1324 device->queue_depth = 1325 get_unaligned_le16(&id_phys->current_queue_depth_limit); 1326 device->active_path_index = id_phys->active_path_number; 1327 device->path_map = id_phys->redundant_path_present_map; 1328 memcpy(&device->box, 1329 &id_phys->alternate_paths_phys_box_on_port, 1330 sizeof(device->box)); 1331 memcpy(&device->phys_connector, 1332 &id_phys->alternate_paths_phys_connector, 1333 sizeof(device->phys_connector)); 1334 device->bay = id_phys->phys_bay_in_box; 1335 1336 return 0; 1337 } 1338 1339 static int pqi_get_logical_device_info(struct pqi_ctrl_info *ctrl_info, 1340 struct pqi_scsi_dev *device) 1341 { 1342 int rc; 1343 u8 *buffer; 1344 1345 buffer = kmalloc(64, GFP_KERNEL); 1346 if (!buffer) 1347 return -ENOMEM; 1348 1349 /* Send an inquiry to the device to see what it is. */ 1350 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64); 1351 if (rc) 1352 goto out; 1353 1354 scsi_sanitize_inquiry_string(&buffer[8], 8); 1355 scsi_sanitize_inquiry_string(&buffer[16], 16); 1356 1357 device->devtype = buffer[0] & 0x1f; 1358 memcpy(device->vendor, &buffer[8], sizeof(device->vendor)); 1359 memcpy(device->model, &buffer[16], sizeof(device->model)); 1360 1361 if (device->devtype == TYPE_DISK) { 1362 if (device->is_external_raid_device) { 1363 device->raid_level = SA_RAID_UNKNOWN; 1364 device->volume_status = CISS_LV_OK; 1365 device->volume_offline = false; 1366 } else { 1367 pqi_get_raid_level(ctrl_info, device); 1368 pqi_get_raid_bypass_status(ctrl_info, device); 1369 pqi_get_volume_status(ctrl_info, device); 1370 } 1371 } 1372 1373 out: 1374 kfree(buffer); 1375 1376 return rc; 1377 } 1378 1379 static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info, 1380 struct pqi_scsi_dev *device, 1381 struct bmic_identify_physical_device *id_phys) 1382 { 1383 int rc; 1384 1385 if (device->is_expander_smp_device) 1386 return 0; 1387 1388 if (pqi_is_logical_device(device)) 1389 rc = pqi_get_logical_device_info(ctrl_info, device); 1390 else 1391 rc = pqi_get_physical_device_info(ctrl_info, device, id_phys); 1392 1393 return rc; 1394 } 1395 1396 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info, 1397 struct pqi_scsi_dev *device) 1398 { 1399 char *status; 1400 static const char unknown_state_str[] = 1401 "Volume is in an unknown state (%u)"; 1402 char unknown_state_buffer[sizeof(unknown_state_str) + 10]; 1403 1404 switch (device->volume_status) { 1405 case CISS_LV_OK: 1406 status = "Volume online"; 1407 break; 1408 case CISS_LV_FAILED: 1409 status = "Volume failed"; 1410 break; 1411 case CISS_LV_NOT_CONFIGURED: 1412 status = "Volume not configured"; 1413 break; 1414 case CISS_LV_DEGRADED: 1415 status = "Volume degraded"; 1416 break; 1417 case CISS_LV_READY_FOR_RECOVERY: 1418 status = "Volume ready for recovery operation"; 1419 break; 1420 case CISS_LV_UNDERGOING_RECOVERY: 1421 status = "Volume undergoing recovery"; 1422 break; 1423 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED: 1424 status = "Wrong physical drive was replaced"; 1425 break; 1426 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM: 1427 status = "A physical drive not properly connected"; 1428 break; 1429 case CISS_LV_HARDWARE_OVERHEATING: 1430 status = "Hardware is overheating"; 1431 break; 1432 case CISS_LV_HARDWARE_HAS_OVERHEATED: 1433 status = "Hardware has overheated"; 1434 break; 1435 case CISS_LV_UNDERGOING_EXPANSION: 1436 status = "Volume undergoing expansion"; 1437 break; 1438 case CISS_LV_NOT_AVAILABLE: 1439 status = "Volume waiting for transforming volume"; 1440 break; 1441 case CISS_LV_QUEUED_FOR_EXPANSION: 1442 status = "Volume queued for expansion"; 1443 break; 1444 case CISS_LV_DISABLED_SCSI_ID_CONFLICT: 1445 status = "Volume disabled due to SCSI ID conflict"; 1446 break; 1447 case CISS_LV_EJECTED: 1448 status = "Volume has been ejected"; 1449 break; 1450 case CISS_LV_UNDERGOING_ERASE: 1451 status = "Volume undergoing background erase"; 1452 break; 1453 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD: 1454 status = "Volume ready for predictive spare rebuild"; 1455 break; 1456 case CISS_LV_UNDERGOING_RPI: 1457 status = "Volume undergoing rapid parity initialization"; 1458 break; 1459 case CISS_LV_PENDING_RPI: 1460 status = "Volume queued for rapid parity initialization"; 1461 break; 1462 case CISS_LV_ENCRYPTED_NO_KEY: 1463 status = "Encrypted volume inaccessible - key not present"; 1464 break; 1465 case CISS_LV_UNDERGOING_ENCRYPTION: 1466 status = "Volume undergoing encryption process"; 1467 break; 1468 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING: 1469 status = "Volume undergoing encryption re-keying process"; 1470 break; 1471 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 1472 status = "Volume encrypted but encryption is disabled"; 1473 break; 1474 case CISS_LV_PENDING_ENCRYPTION: 1475 status = "Volume pending migration to encrypted state"; 1476 break; 1477 case CISS_LV_PENDING_ENCRYPTION_REKEYING: 1478 status = "Volume pending encryption rekeying"; 1479 break; 1480 case CISS_LV_NOT_SUPPORTED: 1481 status = "Volume not supported on this controller"; 1482 break; 1483 case CISS_LV_STATUS_UNAVAILABLE: 1484 status = "Volume status not available"; 1485 break; 1486 default: 1487 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer), 1488 unknown_state_str, device->volume_status); 1489 status = unknown_state_buffer; 1490 break; 1491 } 1492 1493 dev_info(&ctrl_info->pci_dev->dev, 1494 "scsi %d:%d:%d:%d %s\n", 1495 ctrl_info->scsi_host->host_no, 1496 device->bus, device->target, device->lun, status); 1497 } 1498 1499 static void pqi_rescan_worker(struct work_struct *work) 1500 { 1501 struct pqi_ctrl_info *ctrl_info; 1502 1503 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, 1504 rescan_work); 1505 1506 pqi_scan_scsi_devices(ctrl_info); 1507 } 1508 1509 static int pqi_add_device(struct pqi_ctrl_info *ctrl_info, 1510 struct pqi_scsi_dev *device) 1511 { 1512 int rc; 1513 1514 if (pqi_is_logical_device(device)) 1515 rc = scsi_add_device(ctrl_info->scsi_host, device->bus, 1516 device->target, device->lun); 1517 else 1518 rc = pqi_add_sas_device(ctrl_info->sas_host, device); 1519 1520 return rc; 1521 } 1522 1523 #define PQI_PENDING_IO_TIMEOUT_SECS 20 1524 1525 static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, 1526 struct pqi_scsi_dev *device) 1527 { 1528 int rc; 1529 1530 pqi_device_remove_start(device); 1531 1532 rc = pqi_device_wait_for_pending_io(ctrl_info, device, PQI_PENDING_IO_TIMEOUT_SECS); 1533 if (rc) 1534 dev_err(&ctrl_info->pci_dev->dev, 1535 "scsi %d:%d:%d:%d removing device with %d outstanding command(s)\n", 1536 ctrl_info->scsi_host->host_no, device->bus, 1537 device->target, device->lun, 1538 atomic_read(&device->scsi_cmds_outstanding)); 1539 1540 if (pqi_is_logical_device(device)) 1541 scsi_remove_device(device->sdev); 1542 else 1543 pqi_remove_sas_device(device); 1544 } 1545 1546 /* Assumes the SCSI device list lock is held. */ 1547 1548 static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info, 1549 int bus, int target, int lun) 1550 { 1551 struct pqi_scsi_dev *device; 1552 1553 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) 1554 if (device->bus == bus && device->target == target && device->lun == lun) 1555 return device; 1556 1557 return NULL; 1558 } 1559 1560 static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1, 1561 struct pqi_scsi_dev *dev2) 1562 { 1563 if (dev1->is_physical_device != dev2->is_physical_device) 1564 return false; 1565 1566 if (dev1->is_physical_device) 1567 return dev1->wwid == dev2->wwid; 1568 1569 return memcmp(dev1->volume_id, dev2->volume_id, 1570 sizeof(dev1->volume_id)) == 0; 1571 } 1572 1573 enum pqi_find_result { 1574 DEVICE_NOT_FOUND, 1575 DEVICE_CHANGED, 1576 DEVICE_SAME, 1577 }; 1578 1579 static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info, 1580 struct pqi_scsi_dev *device_to_find, struct pqi_scsi_dev **matching_device) 1581 { 1582 struct pqi_scsi_dev *device; 1583 1584 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) { 1585 if (pqi_scsi3addr_equal(device_to_find->scsi3addr, device->scsi3addr)) { 1586 *matching_device = device; 1587 if (pqi_device_equal(device_to_find, device)) { 1588 if (device_to_find->volume_offline) 1589 return DEVICE_CHANGED; 1590 return DEVICE_SAME; 1591 } 1592 return DEVICE_CHANGED; 1593 } 1594 } 1595 1596 return DEVICE_NOT_FOUND; 1597 } 1598 1599 static inline const char *pqi_device_type(struct pqi_scsi_dev *device) 1600 { 1601 if (device->is_expander_smp_device) 1602 return "Enclosure SMP "; 1603 1604 return scsi_device_type(device->devtype); 1605 } 1606 1607 #define PQI_DEV_INFO_BUFFER_LENGTH 128 1608 1609 static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info, 1610 char *action, struct pqi_scsi_dev *device) 1611 { 1612 ssize_t count; 1613 char buffer[PQI_DEV_INFO_BUFFER_LENGTH]; 1614 1615 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH, 1616 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus); 1617 1618 if (device->target_lun_valid) 1619 count += scnprintf(buffer + count, 1620 PQI_DEV_INFO_BUFFER_LENGTH - count, 1621 "%d:%d", 1622 device->target, 1623 device->lun); 1624 else 1625 count += scnprintf(buffer + count, 1626 PQI_DEV_INFO_BUFFER_LENGTH - count, 1627 "-:-"); 1628 1629 if (pqi_is_logical_device(device)) 1630 count += scnprintf(buffer + count, 1631 PQI_DEV_INFO_BUFFER_LENGTH - count, 1632 " %08x%08x", 1633 *((u32 *)&device->scsi3addr), 1634 *((u32 *)&device->scsi3addr[4])); 1635 else 1636 count += scnprintf(buffer + count, 1637 PQI_DEV_INFO_BUFFER_LENGTH - count, 1638 " %016llx", device->sas_address); 1639 1640 count += scnprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count, 1641 " %s %.8s %.16s ", 1642 pqi_device_type(device), 1643 device->vendor, 1644 device->model); 1645 1646 if (pqi_is_logical_device(device)) { 1647 if (device->devtype == TYPE_DISK) 1648 count += scnprintf(buffer + count, 1649 PQI_DEV_INFO_BUFFER_LENGTH - count, 1650 "SSDSmartPathCap%c En%c %-12s", 1651 device->raid_bypass_configured ? '+' : '-', 1652 device->raid_bypass_enabled ? '+' : '-', 1653 pqi_raid_level_to_string(device->raid_level)); 1654 } else { 1655 count += scnprintf(buffer + count, 1656 PQI_DEV_INFO_BUFFER_LENGTH - count, 1657 "AIO%c", device->aio_enabled ? '+' : '-'); 1658 if (device->devtype == TYPE_DISK || 1659 device->devtype == TYPE_ZBC) 1660 count += scnprintf(buffer + count, 1661 PQI_DEV_INFO_BUFFER_LENGTH - count, 1662 " qd=%-6d", device->queue_depth); 1663 } 1664 1665 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer); 1666 } 1667 1668 /* Assumes the SCSI device list lock is held. */ 1669 1670 static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device, 1671 struct pqi_scsi_dev *new_device) 1672 { 1673 existing_device->devtype = new_device->devtype; 1674 existing_device->device_type = new_device->device_type; 1675 existing_device->bus = new_device->bus; 1676 if (new_device->target_lun_valid) { 1677 existing_device->target = new_device->target; 1678 existing_device->lun = new_device->lun; 1679 existing_device->target_lun_valid = true; 1680 } 1681 1682 if ((existing_device->volume_status == CISS_LV_QUEUED_FOR_EXPANSION || 1683 existing_device->volume_status == CISS_LV_UNDERGOING_EXPANSION) && 1684 new_device->volume_status == CISS_LV_OK) 1685 existing_device->rescan = true; 1686 1687 /* By definition, the scsi3addr and wwid fields are already the same. */ 1688 1689 existing_device->is_physical_device = new_device->is_physical_device; 1690 existing_device->is_external_raid_device = 1691 new_device->is_external_raid_device; 1692 existing_device->is_expander_smp_device = 1693 new_device->is_expander_smp_device; 1694 existing_device->aio_enabled = new_device->aio_enabled; 1695 memcpy(existing_device->vendor, new_device->vendor, 1696 sizeof(existing_device->vendor)); 1697 memcpy(existing_device->model, new_device->model, 1698 sizeof(existing_device->model)); 1699 existing_device->sas_address = new_device->sas_address; 1700 existing_device->raid_level = new_device->raid_level; 1701 existing_device->queue_depth = new_device->queue_depth; 1702 existing_device->aio_handle = new_device->aio_handle; 1703 existing_device->volume_status = new_device->volume_status; 1704 existing_device->active_path_index = new_device->active_path_index; 1705 existing_device->path_map = new_device->path_map; 1706 existing_device->bay = new_device->bay; 1707 existing_device->box_index = new_device->box_index; 1708 existing_device->phys_box_on_bus = new_device->phys_box_on_bus; 1709 existing_device->phy_connected_dev_type = 1710 new_device->phy_connected_dev_type; 1711 memcpy(existing_device->box, new_device->box, 1712 sizeof(existing_device->box)); 1713 memcpy(existing_device->phys_connector, new_device->phys_connector, 1714 sizeof(existing_device->phys_connector)); 1715 existing_device->offload_to_mirror = 0; 1716 kfree(existing_device->raid_map); 1717 existing_device->raid_map = new_device->raid_map; 1718 existing_device->raid_bypass_configured = 1719 new_device->raid_bypass_configured; 1720 existing_device->raid_bypass_enabled = 1721 new_device->raid_bypass_enabled; 1722 existing_device->device_offline = false; 1723 1724 /* To prevent this from being freed later. */ 1725 new_device->raid_map = NULL; 1726 } 1727 1728 static inline void pqi_free_device(struct pqi_scsi_dev *device) 1729 { 1730 if (device) { 1731 kfree(device->raid_map); 1732 kfree(device); 1733 } 1734 } 1735 1736 /* 1737 * Called when exposing a new device to the OS fails in order to re-adjust 1738 * our internal SCSI device list to match the SCSI ML's view. 1739 */ 1740 1741 static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info, 1742 struct pqi_scsi_dev *device) 1743 { 1744 unsigned long flags; 1745 1746 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1747 list_del(&device->scsi_device_list_entry); 1748 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 1749 1750 /* Allow the device structure to be freed later. */ 1751 device->keep_device = false; 1752 } 1753 1754 static inline bool pqi_is_device_added(struct pqi_scsi_dev *device) 1755 { 1756 if (device->is_expander_smp_device) 1757 return device->sas_port != NULL; 1758 1759 return device->sdev != NULL; 1760 } 1761 1762 static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info, 1763 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices) 1764 { 1765 int rc; 1766 unsigned int i; 1767 unsigned long flags; 1768 enum pqi_find_result find_result; 1769 struct pqi_scsi_dev *device; 1770 struct pqi_scsi_dev *next; 1771 struct pqi_scsi_dev *matching_device; 1772 LIST_HEAD(add_list); 1773 LIST_HEAD(delete_list); 1774 1775 /* 1776 * The idea here is to do as little work as possible while holding the 1777 * spinlock. That's why we go to great pains to defer anything other 1778 * than updating the internal device list until after we release the 1779 * spinlock. 1780 */ 1781 1782 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1783 1784 /* Assume that all devices in the existing list have gone away. */ 1785 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) 1786 device->device_gone = true; 1787 1788 for (i = 0; i < num_new_devices; i++) { 1789 device = new_device_list[i]; 1790 1791 find_result = pqi_scsi_find_entry(ctrl_info, device, 1792 &matching_device); 1793 1794 switch (find_result) { 1795 case DEVICE_SAME: 1796 /* 1797 * The newly found device is already in the existing 1798 * device list. 1799 */ 1800 device->new_device = false; 1801 matching_device->device_gone = false; 1802 pqi_scsi_update_device(matching_device, device); 1803 break; 1804 case DEVICE_NOT_FOUND: 1805 /* 1806 * The newly found device is NOT in the existing device 1807 * list. 1808 */ 1809 device->new_device = true; 1810 break; 1811 case DEVICE_CHANGED: 1812 /* 1813 * The original device has gone away and we need to add 1814 * the new device. 1815 */ 1816 device->new_device = true; 1817 break; 1818 } 1819 } 1820 1821 /* Process all devices that have gone away. */ 1822 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list, 1823 scsi_device_list_entry) { 1824 if (device->device_gone) { 1825 list_del_init(&device->scsi_device_list_entry); 1826 list_add_tail(&device->delete_list_entry, &delete_list); 1827 } 1828 } 1829 1830 /* Process all new devices. */ 1831 for (i = 0; i < num_new_devices; i++) { 1832 device = new_device_list[i]; 1833 if (!device->new_device) 1834 continue; 1835 if (device->volume_offline) 1836 continue; 1837 list_add_tail(&device->scsi_device_list_entry, 1838 &ctrl_info->scsi_device_list); 1839 list_add_tail(&device->add_list_entry, &add_list); 1840 /* To prevent this device structure from being freed later. */ 1841 device->keep_device = true; 1842 } 1843 1844 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 1845 1846 if (pqi_ctrl_in_ofa(ctrl_info)) 1847 pqi_ctrl_ofa_done(ctrl_info); 1848 1849 /* Remove all devices that have gone away. */ 1850 list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) { 1851 if (device->volume_offline) { 1852 pqi_dev_info(ctrl_info, "offline", device); 1853 pqi_show_volume_status(ctrl_info, device); 1854 } 1855 list_del(&device->delete_list_entry); 1856 if (pqi_is_device_added(device)) { 1857 pqi_remove_device(ctrl_info, device); 1858 } else { 1859 if (!device->volume_offline) 1860 pqi_dev_info(ctrl_info, "removed", device); 1861 pqi_free_device(device); 1862 } 1863 } 1864 1865 /* 1866 * Notify the SCSI ML if the queue depth of any existing device has 1867 * changed. 1868 */ 1869 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1870 scsi_device_list_entry) { 1871 if (device->sdev) { 1872 if (device->queue_depth != 1873 device->advertised_queue_depth) { 1874 device->advertised_queue_depth = device->queue_depth; 1875 scsi_change_queue_depth(device->sdev, 1876 device->advertised_queue_depth); 1877 } 1878 if (device->rescan) { 1879 scsi_rescan_device(&device->sdev->sdev_gendev); 1880 device->rescan = false; 1881 } 1882 } 1883 } 1884 1885 /* Expose any new devices. */ 1886 list_for_each_entry_safe(device, next, &add_list, add_list_entry) { 1887 if (!pqi_is_device_added(device)) { 1888 rc = pqi_add_device(ctrl_info, device); 1889 if (rc == 0) { 1890 pqi_dev_info(ctrl_info, "added", device); 1891 } else { 1892 dev_warn(&ctrl_info->pci_dev->dev, 1893 "scsi %d:%d:%d:%d addition failed, device not added\n", 1894 ctrl_info->scsi_host->host_no, 1895 device->bus, device->target, 1896 device->lun); 1897 pqi_fixup_botched_add(ctrl_info, device); 1898 } 1899 } 1900 } 1901 } 1902 1903 static inline bool pqi_is_supported_device(struct pqi_scsi_dev *device) 1904 { 1905 /* 1906 * Only support the HBA controller itself as a RAID 1907 * controller. If it's a RAID controller other than 1908 * the HBA itself (an external RAID controller, for 1909 * example), we don't support it. 1910 */ 1911 if (device->device_type == SA_DEVICE_TYPE_CONTROLLER && 1912 !pqi_is_hba_lunid(device->scsi3addr)) 1913 return false; 1914 1915 return true; 1916 } 1917 1918 static inline bool pqi_skip_device(u8 *scsi3addr) 1919 { 1920 /* Ignore all masked devices. */ 1921 if (MASKED_DEVICE(scsi3addr)) 1922 return true; 1923 1924 return false; 1925 } 1926 1927 static inline void pqi_mask_device(u8 *scsi3addr) 1928 { 1929 scsi3addr[3] |= 0xc0; 1930 } 1931 1932 static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device) 1933 { 1934 switch (device->device_type) { 1935 case SA_DEVICE_TYPE_SAS: 1936 case SA_DEVICE_TYPE_EXPANDER_SMP: 1937 case SA_DEVICE_TYPE_SES: 1938 return true; 1939 } 1940 1941 return false; 1942 } 1943 1944 static inline bool pqi_expose_device(struct pqi_scsi_dev *device) 1945 { 1946 return !device->is_physical_device || 1947 !pqi_skip_device(device->scsi3addr); 1948 } 1949 1950 static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info) 1951 { 1952 int i; 1953 int rc; 1954 LIST_HEAD(new_device_list_head); 1955 struct report_phys_lun_extended *physdev_list = NULL; 1956 struct report_log_lun_extended *logdev_list = NULL; 1957 struct report_phys_lun_extended_entry *phys_lun_ext_entry; 1958 struct report_log_lun_extended_entry *log_lun_ext_entry; 1959 struct bmic_identify_physical_device *id_phys = NULL; 1960 u32 num_physicals; 1961 u32 num_logicals; 1962 struct pqi_scsi_dev **new_device_list = NULL; 1963 struct pqi_scsi_dev *device; 1964 struct pqi_scsi_dev *next; 1965 unsigned int num_new_devices; 1966 unsigned int num_valid_devices; 1967 bool is_physical_device; 1968 u8 *scsi3addr; 1969 unsigned int physical_index; 1970 unsigned int logical_index; 1971 static char *out_of_memory_msg = 1972 "failed to allocate memory, device discovery stopped"; 1973 1974 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list); 1975 if (rc) 1976 goto out; 1977 1978 if (physdev_list) 1979 num_physicals = 1980 get_unaligned_be32(&physdev_list->header.list_length) 1981 / sizeof(physdev_list->lun_entries[0]); 1982 else 1983 num_physicals = 0; 1984 1985 if (logdev_list) 1986 num_logicals = 1987 get_unaligned_be32(&logdev_list->header.list_length) 1988 / sizeof(logdev_list->lun_entries[0]); 1989 else 1990 num_logicals = 0; 1991 1992 if (num_physicals) { 1993 /* 1994 * We need this buffer for calls to pqi_get_physical_disk_info() 1995 * below. We allocate it here instead of inside 1996 * pqi_get_physical_disk_info() because it's a fairly large 1997 * buffer. 1998 */ 1999 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL); 2000 if (!id_phys) { 2001 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2002 out_of_memory_msg); 2003 rc = -ENOMEM; 2004 goto out; 2005 } 2006 2007 if (pqi_hide_vsep) { 2008 for (i = num_physicals - 1; i >= 0; i--) { 2009 phys_lun_ext_entry = 2010 &physdev_list->lun_entries[i]; 2011 if (CISS_GET_DRIVE_NUMBER( 2012 phys_lun_ext_entry->lunid) == 2013 PQI_VSEP_CISS_BTL) { 2014 pqi_mask_device( 2015 phys_lun_ext_entry->lunid); 2016 break; 2017 } 2018 } 2019 } 2020 } 2021 2022 num_new_devices = num_physicals + num_logicals; 2023 2024 new_device_list = kmalloc_array(num_new_devices, 2025 sizeof(*new_device_list), 2026 GFP_KERNEL); 2027 if (!new_device_list) { 2028 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg); 2029 rc = -ENOMEM; 2030 goto out; 2031 } 2032 2033 for (i = 0; i < num_new_devices; i++) { 2034 device = kzalloc(sizeof(*device), GFP_KERNEL); 2035 if (!device) { 2036 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2037 out_of_memory_msg); 2038 rc = -ENOMEM; 2039 goto out; 2040 } 2041 list_add_tail(&device->new_device_list_entry, 2042 &new_device_list_head); 2043 } 2044 2045 device = NULL; 2046 num_valid_devices = 0; 2047 physical_index = 0; 2048 logical_index = 0; 2049 2050 for (i = 0; i < num_new_devices; i++) { 2051 2052 if ((!pqi_expose_ld_first && i < num_physicals) || 2053 (pqi_expose_ld_first && i >= num_logicals)) { 2054 is_physical_device = true; 2055 phys_lun_ext_entry = 2056 &physdev_list->lun_entries[physical_index++]; 2057 log_lun_ext_entry = NULL; 2058 scsi3addr = phys_lun_ext_entry->lunid; 2059 } else { 2060 is_physical_device = false; 2061 phys_lun_ext_entry = NULL; 2062 log_lun_ext_entry = 2063 &logdev_list->lun_entries[logical_index++]; 2064 scsi3addr = log_lun_ext_entry->lunid; 2065 } 2066 2067 if (is_physical_device && pqi_skip_device(scsi3addr)) 2068 continue; 2069 2070 if (device) 2071 device = list_next_entry(device, new_device_list_entry); 2072 else 2073 device = list_first_entry(&new_device_list_head, 2074 struct pqi_scsi_dev, new_device_list_entry); 2075 2076 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr)); 2077 device->is_physical_device = is_physical_device; 2078 if (is_physical_device) { 2079 device->device_type = phys_lun_ext_entry->device_type; 2080 if (device->device_type == SA_DEVICE_TYPE_EXPANDER_SMP) 2081 device->is_expander_smp_device = true; 2082 } else { 2083 device->is_external_raid_device = 2084 pqi_is_external_raid_addr(scsi3addr); 2085 } 2086 2087 if (!pqi_is_supported_device(device)) 2088 continue; 2089 2090 /* Gather information about the device. */ 2091 rc = pqi_get_device_info(ctrl_info, device, id_phys); 2092 if (rc == -ENOMEM) { 2093 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2094 out_of_memory_msg); 2095 goto out; 2096 } 2097 if (rc) { 2098 if (device->is_physical_device) 2099 dev_warn(&ctrl_info->pci_dev->dev, 2100 "obtaining device info failed, skipping physical device %016llx\n", 2101 get_unaligned_be64( 2102 &phys_lun_ext_entry->wwid)); 2103 else 2104 dev_warn(&ctrl_info->pci_dev->dev, 2105 "obtaining device info failed, skipping logical device %08x%08x\n", 2106 *((u32 *)&device->scsi3addr), 2107 *((u32 *)&device->scsi3addr[4])); 2108 rc = 0; 2109 continue; 2110 } 2111 2112 pqi_assign_bus_target_lun(device); 2113 2114 if (device->is_physical_device) { 2115 device->wwid = phys_lun_ext_entry->wwid; 2116 if ((phys_lun_ext_entry->device_flags & 2117 CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED) && 2118 phys_lun_ext_entry->aio_handle) { 2119 device->aio_enabled = true; 2120 device->aio_handle = 2121 phys_lun_ext_entry->aio_handle; 2122 } 2123 } else { 2124 memcpy(device->volume_id, log_lun_ext_entry->volume_id, 2125 sizeof(device->volume_id)); 2126 } 2127 2128 if (pqi_is_device_with_sas_address(device)) 2129 device->sas_address = get_unaligned_be64(&device->wwid); 2130 2131 new_device_list[num_valid_devices++] = device; 2132 } 2133 2134 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices); 2135 2136 out: 2137 list_for_each_entry_safe(device, next, &new_device_list_head, 2138 new_device_list_entry) { 2139 if (device->keep_device) 2140 continue; 2141 list_del(&device->new_device_list_entry); 2142 pqi_free_device(device); 2143 } 2144 2145 kfree(new_device_list); 2146 kfree(physdev_list); 2147 kfree(logdev_list); 2148 kfree(id_phys); 2149 2150 return rc; 2151 } 2152 2153 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info) 2154 { 2155 int rc = 0; 2156 2157 if (pqi_ctrl_offline(ctrl_info)) 2158 return -ENXIO; 2159 2160 if (!mutex_trylock(&ctrl_info->scan_mutex)) { 2161 pqi_schedule_rescan_worker_delayed(ctrl_info); 2162 rc = -EINPROGRESS; 2163 } else { 2164 rc = pqi_update_scsi_devices(ctrl_info); 2165 if (rc) 2166 pqi_schedule_rescan_worker_delayed(ctrl_info); 2167 mutex_unlock(&ctrl_info->scan_mutex); 2168 } 2169 2170 return rc; 2171 } 2172 2173 static void pqi_scan_start(struct Scsi_Host *shost) 2174 { 2175 struct pqi_ctrl_info *ctrl_info; 2176 2177 ctrl_info = shost_to_hba(shost); 2178 if (pqi_ctrl_in_ofa(ctrl_info)) 2179 return; 2180 2181 pqi_scan_scsi_devices(ctrl_info); 2182 } 2183 2184 /* Returns TRUE if scan is finished. */ 2185 2186 static int pqi_scan_finished(struct Scsi_Host *shost, 2187 unsigned long elapsed_time) 2188 { 2189 struct pqi_ctrl_info *ctrl_info; 2190 2191 ctrl_info = shost_priv(shost); 2192 2193 return !mutex_is_locked(&ctrl_info->scan_mutex); 2194 } 2195 2196 static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info) 2197 { 2198 mutex_lock(&ctrl_info->scan_mutex); 2199 mutex_unlock(&ctrl_info->scan_mutex); 2200 } 2201 2202 static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info) 2203 { 2204 mutex_lock(&ctrl_info->lun_reset_mutex); 2205 mutex_unlock(&ctrl_info->lun_reset_mutex); 2206 } 2207 2208 static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info) 2209 { 2210 mutex_lock(&ctrl_info->ofa_mutex); 2211 mutex_unlock(&ctrl_info->ofa_mutex); 2212 } 2213 2214 static inline void pqi_set_encryption_info( 2215 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map, 2216 u64 first_block) 2217 { 2218 u32 volume_blk_size; 2219 2220 /* 2221 * Set the encryption tweak values based on logical block address. 2222 * If the block size is 512, the tweak value is equal to the LBA. 2223 * For other block sizes, tweak value is (LBA * block size) / 512. 2224 */ 2225 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size); 2226 if (volume_blk_size != 512) 2227 first_block = (first_block * volume_blk_size) / 512; 2228 2229 encryption_info->data_encryption_key_index = 2230 get_unaligned_le16(&raid_map->data_encryption_key_index); 2231 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block); 2232 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block); 2233 } 2234 2235 /* 2236 * Attempt to perform RAID bypass mapping for a logical volume I/O. 2237 */ 2238 2239 #define PQI_RAID_BYPASS_INELIGIBLE 1 2240 2241 static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 2242 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 2243 struct pqi_queue_group *queue_group) 2244 { 2245 struct raid_map *raid_map; 2246 bool is_write = false; 2247 u32 map_index; 2248 u64 first_block; 2249 u64 last_block; 2250 u32 block_cnt; 2251 u32 blocks_per_row; 2252 u64 first_row; 2253 u64 last_row; 2254 u32 first_row_offset; 2255 u32 last_row_offset; 2256 u32 first_column; 2257 u32 last_column; 2258 u64 r0_first_row; 2259 u64 r0_last_row; 2260 u32 r5or6_blocks_per_row; 2261 u64 r5or6_first_row; 2262 u64 r5or6_last_row; 2263 u32 r5or6_first_row_offset; 2264 u32 r5or6_last_row_offset; 2265 u32 r5or6_first_column; 2266 u32 r5or6_last_column; 2267 u16 data_disks_per_row; 2268 u32 total_disks_per_row; 2269 u16 layout_map_count; 2270 u32 stripesize; 2271 u16 strip_size; 2272 u32 first_group; 2273 u32 last_group; 2274 u32 current_group; 2275 u32 map_row; 2276 u32 aio_handle; 2277 u64 disk_block; 2278 u32 disk_block_cnt; 2279 u8 cdb[16]; 2280 u8 cdb_length; 2281 int offload_to_mirror; 2282 struct pqi_encryption_info *encryption_info_ptr; 2283 struct pqi_encryption_info encryption_info; 2284 #if BITS_PER_LONG == 32 2285 u64 tmpdiv; 2286 #endif 2287 2288 /* Check for valid opcode, get LBA and block count. */ 2289 switch (scmd->cmnd[0]) { 2290 case WRITE_6: 2291 is_write = true; 2292 fallthrough; 2293 case READ_6: 2294 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) | 2295 (scmd->cmnd[2] << 8) | scmd->cmnd[3]); 2296 block_cnt = (u32)scmd->cmnd[4]; 2297 if (block_cnt == 0) 2298 block_cnt = 256; 2299 break; 2300 case WRITE_10: 2301 is_write = true; 2302 fallthrough; 2303 case READ_10: 2304 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]); 2305 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]); 2306 break; 2307 case WRITE_12: 2308 is_write = true; 2309 fallthrough; 2310 case READ_12: 2311 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]); 2312 block_cnt = get_unaligned_be32(&scmd->cmnd[6]); 2313 break; 2314 case WRITE_16: 2315 is_write = true; 2316 fallthrough; 2317 case READ_16: 2318 first_block = get_unaligned_be64(&scmd->cmnd[2]); 2319 block_cnt = get_unaligned_be32(&scmd->cmnd[10]); 2320 break; 2321 default: 2322 /* Process via normal I/O path. */ 2323 return PQI_RAID_BYPASS_INELIGIBLE; 2324 } 2325 2326 /* Check for write to non-RAID-0. */ 2327 if (is_write && device->raid_level != SA_RAID_0) 2328 return PQI_RAID_BYPASS_INELIGIBLE; 2329 2330 if (unlikely(block_cnt == 0)) 2331 return PQI_RAID_BYPASS_INELIGIBLE; 2332 2333 last_block = first_block + block_cnt - 1; 2334 raid_map = device->raid_map; 2335 2336 /* Check for invalid block or wraparound. */ 2337 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) || 2338 last_block < first_block) 2339 return PQI_RAID_BYPASS_INELIGIBLE; 2340 2341 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row); 2342 strip_size = get_unaligned_le16(&raid_map->strip_size); 2343 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count); 2344 2345 /* Calculate stripe information for the request. */ 2346 blocks_per_row = data_disks_per_row * strip_size; 2347 #if BITS_PER_LONG == 32 2348 tmpdiv = first_block; 2349 do_div(tmpdiv, blocks_per_row); 2350 first_row = tmpdiv; 2351 tmpdiv = last_block; 2352 do_div(tmpdiv, blocks_per_row); 2353 last_row = tmpdiv; 2354 first_row_offset = (u32)(first_block - (first_row * blocks_per_row)); 2355 last_row_offset = (u32)(last_block - (last_row * blocks_per_row)); 2356 tmpdiv = first_row_offset; 2357 do_div(tmpdiv, strip_size); 2358 first_column = tmpdiv; 2359 tmpdiv = last_row_offset; 2360 do_div(tmpdiv, strip_size); 2361 last_column = tmpdiv; 2362 #else 2363 first_row = first_block / blocks_per_row; 2364 last_row = last_block / blocks_per_row; 2365 first_row_offset = (u32)(first_block - (first_row * blocks_per_row)); 2366 last_row_offset = (u32)(last_block - (last_row * blocks_per_row)); 2367 first_column = first_row_offset / strip_size; 2368 last_column = last_row_offset / strip_size; 2369 #endif 2370 2371 /* If this isn't a single row/column then give to the controller. */ 2372 if (first_row != last_row || first_column != last_column) 2373 return PQI_RAID_BYPASS_INELIGIBLE; 2374 2375 /* Proceeding with driver mapping. */ 2376 total_disks_per_row = data_disks_per_row + 2377 get_unaligned_le16(&raid_map->metadata_disks_per_row); 2378 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) % 2379 get_unaligned_le16(&raid_map->row_cnt); 2380 map_index = (map_row * total_disks_per_row) + first_column; 2381 2382 /* RAID 1 */ 2383 if (device->raid_level == SA_RAID_1) { 2384 if (device->offload_to_mirror) 2385 map_index += data_disks_per_row; 2386 device->offload_to_mirror = !device->offload_to_mirror; 2387 } else if (device->raid_level == SA_RAID_ADM) { 2388 /* RAID ADM */ 2389 /* 2390 * Handles N-way mirrors (R1-ADM) and R10 with # of drives 2391 * divisible by 3. 2392 */ 2393 offload_to_mirror = device->offload_to_mirror; 2394 if (offload_to_mirror == 0) { 2395 /* use physical disk in the first mirrored group. */ 2396 map_index %= data_disks_per_row; 2397 } else { 2398 do { 2399 /* 2400 * Determine mirror group that map_index 2401 * indicates. 2402 */ 2403 current_group = map_index / data_disks_per_row; 2404 2405 if (offload_to_mirror != current_group) { 2406 if (current_group < 2407 layout_map_count - 1) { 2408 /* 2409 * Select raid index from 2410 * next group. 2411 */ 2412 map_index += data_disks_per_row; 2413 current_group++; 2414 } else { 2415 /* 2416 * Select raid index from first 2417 * group. 2418 */ 2419 map_index %= data_disks_per_row; 2420 current_group = 0; 2421 } 2422 } 2423 } while (offload_to_mirror != current_group); 2424 } 2425 2426 /* Set mirror group to use next time. */ 2427 offload_to_mirror = 2428 (offload_to_mirror >= layout_map_count - 1) ? 2429 0 : offload_to_mirror + 1; 2430 device->offload_to_mirror = offload_to_mirror; 2431 /* 2432 * Avoid direct use of device->offload_to_mirror within this 2433 * function since multiple threads might simultaneously 2434 * increment it beyond the range of device->layout_map_count -1. 2435 */ 2436 } else if ((device->raid_level == SA_RAID_5 || 2437 device->raid_level == SA_RAID_6) && layout_map_count > 1) { 2438 /* RAID 50/60 */ 2439 /* Verify first and last block are in same RAID group */ 2440 r5or6_blocks_per_row = strip_size * data_disks_per_row; 2441 stripesize = r5or6_blocks_per_row * layout_map_count; 2442 #if BITS_PER_LONG == 32 2443 tmpdiv = first_block; 2444 first_group = do_div(tmpdiv, stripesize); 2445 tmpdiv = first_group; 2446 do_div(tmpdiv, r5or6_blocks_per_row); 2447 first_group = tmpdiv; 2448 tmpdiv = last_block; 2449 last_group = do_div(tmpdiv, stripesize); 2450 tmpdiv = last_group; 2451 do_div(tmpdiv, r5or6_blocks_per_row); 2452 last_group = tmpdiv; 2453 #else 2454 first_group = (first_block % stripesize) / r5or6_blocks_per_row; 2455 last_group = (last_block % stripesize) / r5or6_blocks_per_row; 2456 #endif 2457 if (first_group != last_group) 2458 return PQI_RAID_BYPASS_INELIGIBLE; 2459 2460 /* Verify request is in a single row of RAID 5/6 */ 2461 #if BITS_PER_LONG == 32 2462 tmpdiv = first_block; 2463 do_div(tmpdiv, stripesize); 2464 first_row = r5or6_first_row = r0_first_row = tmpdiv; 2465 tmpdiv = last_block; 2466 do_div(tmpdiv, stripesize); 2467 r5or6_last_row = r0_last_row = tmpdiv; 2468 #else 2469 first_row = r5or6_first_row = r0_first_row = 2470 first_block / stripesize; 2471 r5or6_last_row = r0_last_row = last_block / stripesize; 2472 #endif 2473 if (r5or6_first_row != r5or6_last_row) 2474 return PQI_RAID_BYPASS_INELIGIBLE; 2475 2476 /* Verify request is in a single column */ 2477 #if BITS_PER_LONG == 32 2478 tmpdiv = first_block; 2479 first_row_offset = do_div(tmpdiv, stripesize); 2480 tmpdiv = first_row_offset; 2481 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row); 2482 r5or6_first_row_offset = first_row_offset; 2483 tmpdiv = last_block; 2484 r5or6_last_row_offset = do_div(tmpdiv, stripesize); 2485 tmpdiv = r5or6_last_row_offset; 2486 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row); 2487 tmpdiv = r5or6_first_row_offset; 2488 do_div(tmpdiv, strip_size); 2489 first_column = r5or6_first_column = tmpdiv; 2490 tmpdiv = r5or6_last_row_offset; 2491 do_div(tmpdiv, strip_size); 2492 r5or6_last_column = tmpdiv; 2493 #else 2494 first_row_offset = r5or6_first_row_offset = 2495 (u32)((first_block % stripesize) % 2496 r5or6_blocks_per_row); 2497 2498 r5or6_last_row_offset = 2499 (u32)((last_block % stripesize) % 2500 r5or6_blocks_per_row); 2501 2502 first_column = r5or6_first_row_offset / strip_size; 2503 r5or6_first_column = first_column; 2504 r5or6_last_column = r5or6_last_row_offset / strip_size; 2505 #endif 2506 if (r5or6_first_column != r5or6_last_column) 2507 return PQI_RAID_BYPASS_INELIGIBLE; 2508 2509 /* Request is eligible */ 2510 map_row = 2511 ((u32)(first_row >> raid_map->parity_rotation_shift)) % 2512 get_unaligned_le16(&raid_map->row_cnt); 2513 2514 map_index = (first_group * 2515 (get_unaligned_le16(&raid_map->row_cnt) * 2516 total_disks_per_row)) + 2517 (map_row * total_disks_per_row) + first_column; 2518 } 2519 2520 aio_handle = raid_map->disk_data[map_index].aio_handle; 2521 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) + 2522 first_row * strip_size + 2523 (first_row_offset - first_column * strip_size); 2524 disk_block_cnt = block_cnt; 2525 2526 /* Handle differing logical/physical block sizes. */ 2527 if (raid_map->phys_blk_shift) { 2528 disk_block <<= raid_map->phys_blk_shift; 2529 disk_block_cnt <<= raid_map->phys_blk_shift; 2530 } 2531 2532 if (unlikely(disk_block_cnt > 0xffff)) 2533 return PQI_RAID_BYPASS_INELIGIBLE; 2534 2535 /* Build the new CDB for the physical disk I/O. */ 2536 if (disk_block > 0xffffffff) { 2537 cdb[0] = is_write ? WRITE_16 : READ_16; 2538 cdb[1] = 0; 2539 put_unaligned_be64(disk_block, &cdb[2]); 2540 put_unaligned_be32(disk_block_cnt, &cdb[10]); 2541 cdb[14] = 0; 2542 cdb[15] = 0; 2543 cdb_length = 16; 2544 } else { 2545 cdb[0] = is_write ? WRITE_10 : READ_10; 2546 cdb[1] = 0; 2547 put_unaligned_be32((u32)disk_block, &cdb[2]); 2548 cdb[6] = 0; 2549 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]); 2550 cdb[9] = 0; 2551 cdb_length = 10; 2552 } 2553 2554 if (get_unaligned_le16(&raid_map->flags) & 2555 RAID_MAP_ENCRYPTION_ENABLED) { 2556 pqi_set_encryption_info(&encryption_info, raid_map, 2557 first_block); 2558 encryption_info_ptr = &encryption_info; 2559 } else { 2560 encryption_info_ptr = NULL; 2561 } 2562 2563 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle, 2564 cdb, cdb_length, queue_group, encryption_info_ptr, true); 2565 } 2566 2567 #define PQI_STATUS_IDLE 0x0 2568 2569 #define PQI_CREATE_ADMIN_QUEUE_PAIR 1 2570 #define PQI_DELETE_ADMIN_QUEUE_PAIR 2 2571 2572 #define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0 2573 #define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1 2574 #define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2 2575 #define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3 2576 #define PQI_DEVICE_STATE_ERROR 0x4 2577 2578 #define PQI_MODE_READY_TIMEOUT_SECS 30 2579 #define PQI_MODE_READY_POLL_INTERVAL_MSECS 1 2580 2581 static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info) 2582 { 2583 struct pqi_device_registers __iomem *pqi_registers; 2584 unsigned long timeout; 2585 u64 signature; 2586 u8 status; 2587 2588 pqi_registers = ctrl_info->pqi_registers; 2589 timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies; 2590 2591 while (1) { 2592 signature = readq(&pqi_registers->signature); 2593 if (memcmp(&signature, PQI_DEVICE_SIGNATURE, 2594 sizeof(signature)) == 0) 2595 break; 2596 if (time_after(jiffies, timeout)) { 2597 dev_err(&ctrl_info->pci_dev->dev, 2598 "timed out waiting for PQI signature\n"); 2599 return -ETIMEDOUT; 2600 } 2601 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2602 } 2603 2604 while (1) { 2605 status = readb(&pqi_registers->function_and_status_code); 2606 if (status == PQI_STATUS_IDLE) 2607 break; 2608 if (time_after(jiffies, timeout)) { 2609 dev_err(&ctrl_info->pci_dev->dev, 2610 "timed out waiting for PQI IDLE\n"); 2611 return -ETIMEDOUT; 2612 } 2613 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2614 } 2615 2616 while (1) { 2617 if (readl(&pqi_registers->device_status) == 2618 PQI_DEVICE_STATE_ALL_REGISTERS_READY) 2619 break; 2620 if (time_after(jiffies, timeout)) { 2621 dev_err(&ctrl_info->pci_dev->dev, 2622 "timed out waiting for PQI all registers ready\n"); 2623 return -ETIMEDOUT; 2624 } 2625 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2626 } 2627 2628 return 0; 2629 } 2630 2631 static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request) 2632 { 2633 struct pqi_scsi_dev *device; 2634 2635 device = io_request->scmd->device->hostdata; 2636 device->raid_bypass_enabled = false; 2637 device->aio_enabled = false; 2638 } 2639 2640 static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path) 2641 { 2642 struct pqi_ctrl_info *ctrl_info; 2643 struct pqi_scsi_dev *device; 2644 2645 device = sdev->hostdata; 2646 if (device->device_offline) 2647 return; 2648 2649 device->device_offline = true; 2650 ctrl_info = shost_to_hba(sdev->host); 2651 pqi_schedule_rescan_worker(ctrl_info); 2652 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n", 2653 path, ctrl_info->scsi_host->host_no, device->bus, 2654 device->target, device->lun); 2655 } 2656 2657 static void pqi_process_raid_io_error(struct pqi_io_request *io_request) 2658 { 2659 u8 scsi_status; 2660 u8 host_byte; 2661 struct scsi_cmnd *scmd; 2662 struct pqi_raid_error_info *error_info; 2663 size_t sense_data_length; 2664 int residual_count; 2665 int xfer_count; 2666 struct scsi_sense_hdr sshdr; 2667 2668 scmd = io_request->scmd; 2669 if (!scmd) 2670 return; 2671 2672 error_info = io_request->error_info; 2673 scsi_status = error_info->status; 2674 host_byte = DID_OK; 2675 2676 switch (error_info->data_out_result) { 2677 case PQI_DATA_IN_OUT_GOOD: 2678 break; 2679 case PQI_DATA_IN_OUT_UNDERFLOW: 2680 xfer_count = 2681 get_unaligned_le32(&error_info->data_out_transferred); 2682 residual_count = scsi_bufflen(scmd) - xfer_count; 2683 scsi_set_resid(scmd, residual_count); 2684 if (xfer_count < scmd->underflow) 2685 host_byte = DID_SOFT_ERROR; 2686 break; 2687 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 2688 case PQI_DATA_IN_OUT_ABORTED: 2689 host_byte = DID_ABORT; 2690 break; 2691 case PQI_DATA_IN_OUT_TIMEOUT: 2692 host_byte = DID_TIME_OUT; 2693 break; 2694 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 2695 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 2696 case PQI_DATA_IN_OUT_BUFFER_ERROR: 2697 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 2698 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 2699 case PQI_DATA_IN_OUT_ERROR: 2700 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 2701 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 2702 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 2703 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 2704 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 2705 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 2706 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 2707 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 2708 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 2709 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 2710 default: 2711 host_byte = DID_ERROR; 2712 break; 2713 } 2714 2715 sense_data_length = get_unaligned_le16(&error_info->sense_data_length); 2716 if (sense_data_length == 0) 2717 sense_data_length = 2718 get_unaligned_le16(&error_info->response_data_length); 2719 if (sense_data_length) { 2720 if (sense_data_length > sizeof(error_info->data)) 2721 sense_data_length = sizeof(error_info->data); 2722 2723 if (scsi_status == SAM_STAT_CHECK_CONDITION && 2724 scsi_normalize_sense(error_info->data, 2725 sense_data_length, &sshdr) && 2726 sshdr.sense_key == HARDWARE_ERROR && 2727 sshdr.asc == 0x3e) { 2728 struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host); 2729 struct pqi_scsi_dev *device = scmd->device->hostdata; 2730 2731 switch (sshdr.ascq) { 2732 case 0x1: /* LOGICAL UNIT FAILURE */ 2733 if (printk_ratelimit()) 2734 scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n", 2735 ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun); 2736 pqi_take_device_offline(scmd->device, "RAID"); 2737 host_byte = DID_NO_CONNECT; 2738 break; 2739 2740 default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */ 2741 if (printk_ratelimit()) 2742 scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n", 2743 sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun); 2744 break; 2745 } 2746 } 2747 2748 if (sense_data_length > SCSI_SENSE_BUFFERSIZE) 2749 sense_data_length = SCSI_SENSE_BUFFERSIZE; 2750 memcpy(scmd->sense_buffer, error_info->data, 2751 sense_data_length); 2752 } 2753 2754 scmd->result = scsi_status; 2755 set_host_byte(scmd, host_byte); 2756 } 2757 2758 static void pqi_process_aio_io_error(struct pqi_io_request *io_request) 2759 { 2760 u8 scsi_status; 2761 u8 host_byte; 2762 struct scsi_cmnd *scmd; 2763 struct pqi_aio_error_info *error_info; 2764 size_t sense_data_length; 2765 int residual_count; 2766 int xfer_count; 2767 bool device_offline; 2768 2769 scmd = io_request->scmd; 2770 error_info = io_request->error_info; 2771 host_byte = DID_OK; 2772 sense_data_length = 0; 2773 device_offline = false; 2774 2775 switch (error_info->service_response) { 2776 case PQI_AIO_SERV_RESPONSE_COMPLETE: 2777 scsi_status = error_info->status; 2778 break; 2779 case PQI_AIO_SERV_RESPONSE_FAILURE: 2780 switch (error_info->status) { 2781 case PQI_AIO_STATUS_IO_ABORTED: 2782 scsi_status = SAM_STAT_TASK_ABORTED; 2783 break; 2784 case PQI_AIO_STATUS_UNDERRUN: 2785 scsi_status = SAM_STAT_GOOD; 2786 residual_count = get_unaligned_le32( 2787 &error_info->residual_count); 2788 scsi_set_resid(scmd, residual_count); 2789 xfer_count = scsi_bufflen(scmd) - residual_count; 2790 if (xfer_count < scmd->underflow) 2791 host_byte = DID_SOFT_ERROR; 2792 break; 2793 case PQI_AIO_STATUS_OVERRUN: 2794 scsi_status = SAM_STAT_GOOD; 2795 break; 2796 case PQI_AIO_STATUS_AIO_PATH_DISABLED: 2797 pqi_aio_path_disabled(io_request); 2798 scsi_status = SAM_STAT_GOOD; 2799 io_request->status = -EAGAIN; 2800 break; 2801 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE: 2802 case PQI_AIO_STATUS_INVALID_DEVICE: 2803 if (!io_request->raid_bypass) { 2804 device_offline = true; 2805 pqi_take_device_offline(scmd->device, "AIO"); 2806 host_byte = DID_NO_CONNECT; 2807 } 2808 scsi_status = SAM_STAT_CHECK_CONDITION; 2809 break; 2810 case PQI_AIO_STATUS_IO_ERROR: 2811 default: 2812 scsi_status = SAM_STAT_CHECK_CONDITION; 2813 break; 2814 } 2815 break; 2816 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE: 2817 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED: 2818 scsi_status = SAM_STAT_GOOD; 2819 break; 2820 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED: 2821 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN: 2822 default: 2823 scsi_status = SAM_STAT_CHECK_CONDITION; 2824 break; 2825 } 2826 2827 if (error_info->data_present) { 2828 sense_data_length = 2829 get_unaligned_le16(&error_info->data_length); 2830 if (sense_data_length) { 2831 if (sense_data_length > sizeof(error_info->data)) 2832 sense_data_length = sizeof(error_info->data); 2833 if (sense_data_length > SCSI_SENSE_BUFFERSIZE) 2834 sense_data_length = SCSI_SENSE_BUFFERSIZE; 2835 memcpy(scmd->sense_buffer, error_info->data, 2836 sense_data_length); 2837 } 2838 } 2839 2840 if (device_offline && sense_data_length == 0) 2841 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR, 2842 0x3e, 0x1); 2843 2844 scmd->result = scsi_status; 2845 set_host_byte(scmd, host_byte); 2846 } 2847 2848 static void pqi_process_io_error(unsigned int iu_type, 2849 struct pqi_io_request *io_request) 2850 { 2851 switch (iu_type) { 2852 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR: 2853 pqi_process_raid_io_error(io_request); 2854 break; 2855 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR: 2856 pqi_process_aio_io_error(io_request); 2857 break; 2858 } 2859 } 2860 2861 static int pqi_interpret_task_management_response( 2862 struct pqi_task_management_response *response) 2863 { 2864 int rc; 2865 2866 switch (response->response_code) { 2867 case SOP_TMF_COMPLETE: 2868 case SOP_TMF_FUNCTION_SUCCEEDED: 2869 rc = 0; 2870 break; 2871 case SOP_TMF_REJECTED: 2872 rc = -EAGAIN; 2873 break; 2874 default: 2875 rc = -EIO; 2876 break; 2877 } 2878 2879 return rc; 2880 } 2881 2882 static inline void pqi_invalid_response(struct pqi_ctrl_info *ctrl_info) 2883 { 2884 pqi_take_ctrl_offline(ctrl_info); 2885 } 2886 2887 static int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info, struct pqi_queue_group *queue_group) 2888 { 2889 int num_responses; 2890 pqi_index_t oq_pi; 2891 pqi_index_t oq_ci; 2892 struct pqi_io_request *io_request; 2893 struct pqi_io_response *response; 2894 u16 request_id; 2895 2896 num_responses = 0; 2897 oq_ci = queue_group->oq_ci_copy; 2898 2899 while (1) { 2900 oq_pi = readl(queue_group->oq_pi); 2901 if (oq_pi >= ctrl_info->num_elements_per_oq) { 2902 pqi_invalid_response(ctrl_info); 2903 dev_err(&ctrl_info->pci_dev->dev, 2904 "I/O interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n", 2905 oq_pi, ctrl_info->num_elements_per_oq - 1, oq_ci); 2906 return -1; 2907 } 2908 if (oq_pi == oq_ci) 2909 break; 2910 2911 num_responses++; 2912 response = queue_group->oq_element_array + 2913 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 2914 2915 request_id = get_unaligned_le16(&response->request_id); 2916 if (request_id >= ctrl_info->max_io_slots) { 2917 pqi_invalid_response(ctrl_info); 2918 dev_err(&ctrl_info->pci_dev->dev, 2919 "request ID in response (%u) out of range (0-%u): producer index: %u consumer index: %u\n", 2920 request_id, ctrl_info->max_io_slots - 1, oq_pi, oq_ci); 2921 return -1; 2922 } 2923 2924 io_request = &ctrl_info->io_request_pool[request_id]; 2925 if (atomic_read(&io_request->refcount) == 0) { 2926 pqi_invalid_response(ctrl_info); 2927 dev_err(&ctrl_info->pci_dev->dev, 2928 "request ID in response (%u) does not match an outstanding I/O request: producer index: %u consumer index: %u\n", 2929 request_id, oq_pi, oq_ci); 2930 return -1; 2931 } 2932 2933 switch (response->header.iu_type) { 2934 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS: 2935 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS: 2936 if (io_request->scmd) 2937 io_request->scmd->result = 0; 2938 fallthrough; 2939 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT: 2940 break; 2941 case PQI_RESPONSE_IU_VENDOR_GENERAL: 2942 io_request->status = 2943 get_unaligned_le16( 2944 &((struct pqi_vendor_general_response *) 2945 response)->status); 2946 break; 2947 case PQI_RESPONSE_IU_TASK_MANAGEMENT: 2948 io_request->status = 2949 pqi_interpret_task_management_response( 2950 (void *)response); 2951 break; 2952 case PQI_RESPONSE_IU_AIO_PATH_DISABLED: 2953 pqi_aio_path_disabled(io_request); 2954 io_request->status = -EAGAIN; 2955 break; 2956 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR: 2957 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR: 2958 io_request->error_info = ctrl_info->error_buffer + 2959 (get_unaligned_le16(&response->error_index) * 2960 PQI_ERROR_BUFFER_ELEMENT_LENGTH); 2961 pqi_process_io_error(response->header.iu_type, io_request); 2962 break; 2963 default: 2964 pqi_invalid_response(ctrl_info); 2965 dev_err(&ctrl_info->pci_dev->dev, 2966 "unexpected IU type: 0x%x: producer index: %u consumer index: %u\n", 2967 response->header.iu_type, oq_pi, oq_ci); 2968 return -1; 2969 } 2970 2971 io_request->io_complete_callback(io_request, io_request->context); 2972 2973 /* 2974 * Note that the I/O request structure CANNOT BE TOUCHED after 2975 * returning from the I/O completion callback! 2976 */ 2977 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq; 2978 } 2979 2980 if (num_responses) { 2981 queue_group->oq_ci_copy = oq_ci; 2982 writel(oq_ci, queue_group->oq_ci); 2983 } 2984 2985 return num_responses; 2986 } 2987 2988 static inline unsigned int pqi_num_elements_free(unsigned int pi, 2989 unsigned int ci, unsigned int elements_in_queue) 2990 { 2991 unsigned int num_elements_used; 2992 2993 if (pi >= ci) 2994 num_elements_used = pi - ci; 2995 else 2996 num_elements_used = elements_in_queue - ci + pi; 2997 2998 return elements_in_queue - num_elements_used - 1; 2999 } 3000 3001 static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info, 3002 struct pqi_event_acknowledge_request *iu, size_t iu_length) 3003 { 3004 pqi_index_t iq_pi; 3005 pqi_index_t iq_ci; 3006 unsigned long flags; 3007 void *next_element; 3008 struct pqi_queue_group *queue_group; 3009 3010 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP]; 3011 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id); 3012 3013 while (1) { 3014 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags); 3015 3016 iq_pi = queue_group->iq_pi_copy[RAID_PATH]; 3017 iq_ci = readl(queue_group->iq_ci[RAID_PATH]); 3018 3019 if (pqi_num_elements_free(iq_pi, iq_ci, 3020 ctrl_info->num_elements_per_iq)) 3021 break; 3022 3023 spin_unlock_irqrestore( 3024 &queue_group->submit_lock[RAID_PATH], flags); 3025 3026 if (pqi_ctrl_offline(ctrl_info)) 3027 return; 3028 } 3029 3030 next_element = queue_group->iq_element_array[RAID_PATH] + 3031 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3032 3033 memcpy(next_element, iu, iu_length); 3034 3035 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq; 3036 queue_group->iq_pi_copy[RAID_PATH] = iq_pi; 3037 3038 /* 3039 * This write notifies the controller that an IU is available to be 3040 * processed. 3041 */ 3042 writel(iq_pi, queue_group->iq_pi[RAID_PATH]); 3043 3044 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags); 3045 } 3046 3047 static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info, 3048 struct pqi_event *event) 3049 { 3050 struct pqi_event_acknowledge_request request; 3051 3052 memset(&request, 0, sizeof(request)); 3053 3054 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT; 3055 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 3056 &request.header.iu_length); 3057 request.event_type = event->event_type; 3058 request.event_id = event->event_id; 3059 request.additional_event_id = event->additional_event_id; 3060 3061 pqi_send_event_ack(ctrl_info, &request, sizeof(request)); 3062 } 3063 3064 #define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30 3065 #define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1 3066 3067 static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status( 3068 struct pqi_ctrl_info *ctrl_info) 3069 { 3070 unsigned long timeout; 3071 u8 status; 3072 3073 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies; 3074 3075 while (1) { 3076 status = pqi_read_soft_reset_status(ctrl_info); 3077 if (status & PQI_SOFT_RESET_INITIATE) 3078 return RESET_INITIATE_DRIVER; 3079 3080 if (status & PQI_SOFT_RESET_ABORT) 3081 return RESET_ABORT; 3082 3083 if (time_after(jiffies, timeout)) { 3084 dev_err(&ctrl_info->pci_dev->dev, 3085 "timed out waiting for soft reset status\n"); 3086 return RESET_TIMEDOUT; 3087 } 3088 3089 if (!sis_is_firmware_running(ctrl_info)) 3090 return RESET_NORESPONSE; 3091 3092 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS); 3093 } 3094 } 3095 3096 static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info, 3097 enum pqi_soft_reset_status reset_status) 3098 { 3099 int rc; 3100 3101 switch (reset_status) { 3102 case RESET_INITIATE_DRIVER: 3103 case RESET_TIMEDOUT: 3104 dev_info(&ctrl_info->pci_dev->dev, 3105 "resetting controller %u\n", ctrl_info->ctrl_id); 3106 sis_soft_reset(ctrl_info); 3107 fallthrough; 3108 case RESET_INITIATE_FIRMWARE: 3109 rc = pqi_ofa_ctrl_restart(ctrl_info); 3110 pqi_ofa_free_host_buffer(ctrl_info); 3111 dev_info(&ctrl_info->pci_dev->dev, 3112 "Online Firmware Activation for controller %u: %s\n", 3113 ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED"); 3114 break; 3115 case RESET_ABORT: 3116 pqi_ofa_ctrl_unquiesce(ctrl_info); 3117 dev_info(&ctrl_info->pci_dev->dev, 3118 "Online Firmware Activation for controller %u: %s\n", 3119 ctrl_info->ctrl_id, "ABORTED"); 3120 break; 3121 case RESET_NORESPONSE: 3122 pqi_ofa_free_host_buffer(ctrl_info); 3123 pqi_take_ctrl_offline(ctrl_info); 3124 break; 3125 } 3126 } 3127 3128 static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info, 3129 struct pqi_event *event) 3130 { 3131 u16 event_id; 3132 enum pqi_soft_reset_status status; 3133 3134 event_id = get_unaligned_le16(&event->event_id); 3135 3136 mutex_lock(&ctrl_info->ofa_mutex); 3137 3138 if (event_id == PQI_EVENT_OFA_QUIESCE) { 3139 dev_info(&ctrl_info->pci_dev->dev, 3140 "Received Online Firmware Activation quiesce event for controller %u\n", 3141 ctrl_info->ctrl_id); 3142 pqi_ofa_ctrl_quiesce(ctrl_info); 3143 pqi_acknowledge_event(ctrl_info, event); 3144 if (ctrl_info->soft_reset_handshake_supported) { 3145 status = pqi_poll_for_soft_reset_status(ctrl_info); 3146 pqi_process_soft_reset(ctrl_info, status); 3147 } else { 3148 pqi_process_soft_reset(ctrl_info, 3149 RESET_INITIATE_FIRMWARE); 3150 } 3151 3152 } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { 3153 pqi_acknowledge_event(ctrl_info, event); 3154 pqi_ofa_setup_host_buffer(ctrl_info, 3155 le32_to_cpu(event->ofa_bytes_requested)); 3156 pqi_ofa_host_memory_update(ctrl_info); 3157 } else if (event_id == PQI_EVENT_OFA_CANCELLED) { 3158 pqi_ofa_free_host_buffer(ctrl_info); 3159 pqi_acknowledge_event(ctrl_info, event); 3160 dev_info(&ctrl_info->pci_dev->dev, 3161 "Online Firmware Activation(%u) cancel reason : %u\n", 3162 ctrl_info->ctrl_id, event->ofa_cancel_reason); 3163 } 3164 3165 mutex_unlock(&ctrl_info->ofa_mutex); 3166 } 3167 3168 static void pqi_event_worker(struct work_struct *work) 3169 { 3170 unsigned int i; 3171 struct pqi_ctrl_info *ctrl_info; 3172 struct pqi_event *event; 3173 3174 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work); 3175 3176 pqi_ctrl_busy(ctrl_info); 3177 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT); 3178 if (pqi_ctrl_offline(ctrl_info)) 3179 goto out; 3180 3181 pqi_schedule_rescan_worker_delayed(ctrl_info); 3182 3183 event = ctrl_info->events; 3184 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) { 3185 if (event->pending) { 3186 event->pending = false; 3187 if (event->event_type == PQI_EVENT_TYPE_OFA) { 3188 pqi_ctrl_unbusy(ctrl_info); 3189 pqi_ofa_process_event(ctrl_info, event); 3190 return; 3191 } 3192 pqi_acknowledge_event(ctrl_info, event); 3193 } 3194 event++; 3195 } 3196 3197 out: 3198 pqi_ctrl_unbusy(ctrl_info); 3199 } 3200 3201 #define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ) 3202 3203 static void pqi_heartbeat_timer_handler(struct timer_list *t) 3204 { 3205 int num_interrupts; 3206 u32 heartbeat_count; 3207 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t, 3208 heartbeat_timer); 3209 3210 pqi_check_ctrl_health(ctrl_info); 3211 if (pqi_ctrl_offline(ctrl_info)) 3212 return; 3213 3214 num_interrupts = atomic_read(&ctrl_info->num_interrupts); 3215 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info); 3216 3217 if (num_interrupts == ctrl_info->previous_num_interrupts) { 3218 if (heartbeat_count == ctrl_info->previous_heartbeat_count) { 3219 dev_err(&ctrl_info->pci_dev->dev, 3220 "no heartbeat detected - last heartbeat count: %u\n", 3221 heartbeat_count); 3222 pqi_take_ctrl_offline(ctrl_info); 3223 return; 3224 } 3225 } else { 3226 ctrl_info->previous_num_interrupts = num_interrupts; 3227 } 3228 3229 ctrl_info->previous_heartbeat_count = heartbeat_count; 3230 mod_timer(&ctrl_info->heartbeat_timer, 3231 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL); 3232 } 3233 3234 static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) 3235 { 3236 if (!ctrl_info->heartbeat_counter) 3237 return; 3238 3239 ctrl_info->previous_num_interrupts = 3240 atomic_read(&ctrl_info->num_interrupts); 3241 ctrl_info->previous_heartbeat_count = 3242 pqi_read_heartbeat_counter(ctrl_info); 3243 3244 ctrl_info->heartbeat_timer.expires = 3245 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL; 3246 add_timer(&ctrl_info->heartbeat_timer); 3247 } 3248 3249 static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) 3250 { 3251 del_timer_sync(&ctrl_info->heartbeat_timer); 3252 } 3253 3254 static inline int pqi_event_type_to_event_index(unsigned int event_type) 3255 { 3256 int index; 3257 3258 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++) 3259 if (event_type == pqi_supported_event_types[index]) 3260 return index; 3261 3262 return -1; 3263 } 3264 3265 static inline bool pqi_is_supported_event(unsigned int event_type) 3266 { 3267 return pqi_event_type_to_event_index(event_type) != -1; 3268 } 3269 3270 static void pqi_ofa_capture_event_payload(struct pqi_event *event, 3271 struct pqi_event_response *response) 3272 { 3273 u16 event_id; 3274 3275 event_id = get_unaligned_le16(&event->event_id); 3276 3277 if (event->event_type == PQI_EVENT_TYPE_OFA) { 3278 if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { 3279 event->ofa_bytes_requested = 3280 response->data.ofa_memory_allocation.bytes_requested; 3281 } else if (event_id == PQI_EVENT_OFA_CANCELLED) { 3282 event->ofa_cancel_reason = 3283 response->data.ofa_cancelled.reason; 3284 } 3285 } 3286 } 3287 3288 static int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info) 3289 { 3290 int num_events; 3291 pqi_index_t oq_pi; 3292 pqi_index_t oq_ci; 3293 struct pqi_event_queue *event_queue; 3294 struct pqi_event_response *response; 3295 struct pqi_event *event; 3296 int event_index; 3297 3298 event_queue = &ctrl_info->event_queue; 3299 num_events = 0; 3300 oq_ci = event_queue->oq_ci_copy; 3301 3302 while (1) { 3303 oq_pi = readl(event_queue->oq_pi); 3304 if (oq_pi >= PQI_NUM_EVENT_QUEUE_ELEMENTS) { 3305 pqi_invalid_response(ctrl_info); 3306 dev_err(&ctrl_info->pci_dev->dev, 3307 "event interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n", 3308 oq_pi, PQI_NUM_EVENT_QUEUE_ELEMENTS - 1, oq_ci); 3309 return -1; 3310 } 3311 3312 if (oq_pi == oq_ci) 3313 break; 3314 3315 num_events++; 3316 response = event_queue->oq_element_array + (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH); 3317 3318 event_index = 3319 pqi_event_type_to_event_index(response->event_type); 3320 3321 if (event_index >= 0 && response->request_acknowledge) { 3322 event = &ctrl_info->events[event_index]; 3323 event->pending = true; 3324 event->event_type = response->event_type; 3325 event->event_id = response->event_id; 3326 event->additional_event_id = response->additional_event_id; 3327 if (event->event_type == PQI_EVENT_TYPE_OFA) 3328 pqi_ofa_capture_event_payload(event, response); 3329 } 3330 3331 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS; 3332 } 3333 3334 if (num_events) { 3335 event_queue->oq_ci_copy = oq_ci; 3336 writel(oq_ci, event_queue->oq_ci); 3337 schedule_work(&ctrl_info->event_work); 3338 } 3339 3340 return num_events; 3341 } 3342 3343 #define PQI_LEGACY_INTX_MASK 0x1 3344 3345 static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, 3346 bool enable_intx) 3347 { 3348 u32 intx_mask; 3349 struct pqi_device_registers __iomem *pqi_registers; 3350 volatile void __iomem *register_addr; 3351 3352 pqi_registers = ctrl_info->pqi_registers; 3353 3354 if (enable_intx) 3355 register_addr = &pqi_registers->legacy_intx_mask_clear; 3356 else 3357 register_addr = &pqi_registers->legacy_intx_mask_set; 3358 3359 intx_mask = readl(register_addr); 3360 intx_mask |= PQI_LEGACY_INTX_MASK; 3361 writel(intx_mask, register_addr); 3362 } 3363 3364 static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info, 3365 enum pqi_irq_mode new_mode) 3366 { 3367 switch (ctrl_info->irq_mode) { 3368 case IRQ_MODE_MSIX: 3369 switch (new_mode) { 3370 case IRQ_MODE_MSIX: 3371 break; 3372 case IRQ_MODE_INTX: 3373 pqi_configure_legacy_intx(ctrl_info, true); 3374 sis_enable_intx(ctrl_info); 3375 break; 3376 case IRQ_MODE_NONE: 3377 break; 3378 } 3379 break; 3380 case IRQ_MODE_INTX: 3381 switch (new_mode) { 3382 case IRQ_MODE_MSIX: 3383 pqi_configure_legacy_intx(ctrl_info, false); 3384 sis_enable_msix(ctrl_info); 3385 break; 3386 case IRQ_MODE_INTX: 3387 break; 3388 case IRQ_MODE_NONE: 3389 pqi_configure_legacy_intx(ctrl_info, false); 3390 break; 3391 } 3392 break; 3393 case IRQ_MODE_NONE: 3394 switch (new_mode) { 3395 case IRQ_MODE_MSIX: 3396 sis_enable_msix(ctrl_info); 3397 break; 3398 case IRQ_MODE_INTX: 3399 pqi_configure_legacy_intx(ctrl_info, true); 3400 sis_enable_intx(ctrl_info); 3401 break; 3402 case IRQ_MODE_NONE: 3403 break; 3404 } 3405 break; 3406 } 3407 3408 ctrl_info->irq_mode = new_mode; 3409 } 3410 3411 #define PQI_LEGACY_INTX_PENDING 0x1 3412 3413 static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info) 3414 { 3415 bool valid_irq; 3416 u32 intx_status; 3417 3418 switch (ctrl_info->irq_mode) { 3419 case IRQ_MODE_MSIX: 3420 valid_irq = true; 3421 break; 3422 case IRQ_MODE_INTX: 3423 intx_status = 3424 readl(&ctrl_info->pqi_registers->legacy_intx_status); 3425 if (intx_status & PQI_LEGACY_INTX_PENDING) 3426 valid_irq = true; 3427 else 3428 valid_irq = false; 3429 break; 3430 case IRQ_MODE_NONE: 3431 default: 3432 valid_irq = false; 3433 break; 3434 } 3435 3436 return valid_irq; 3437 } 3438 3439 static irqreturn_t pqi_irq_handler(int irq, void *data) 3440 { 3441 struct pqi_ctrl_info *ctrl_info; 3442 struct pqi_queue_group *queue_group; 3443 int num_io_responses_handled; 3444 int num_events_handled; 3445 3446 queue_group = data; 3447 ctrl_info = queue_group->ctrl_info; 3448 3449 if (!pqi_is_valid_irq(ctrl_info)) 3450 return IRQ_NONE; 3451 3452 num_io_responses_handled = pqi_process_io_intr(ctrl_info, queue_group); 3453 if (num_io_responses_handled < 0) 3454 goto out; 3455 3456 if (irq == ctrl_info->event_irq) { 3457 num_events_handled = pqi_process_event_intr(ctrl_info); 3458 if (num_events_handled < 0) 3459 goto out; 3460 } else { 3461 num_events_handled = 0; 3462 } 3463 3464 if (num_io_responses_handled + num_events_handled > 0) 3465 atomic_inc(&ctrl_info->num_interrupts); 3466 3467 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL); 3468 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL); 3469 3470 out: 3471 return IRQ_HANDLED; 3472 } 3473 3474 static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info) 3475 { 3476 struct pci_dev *pci_dev = ctrl_info->pci_dev; 3477 int i; 3478 int rc; 3479 3480 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0); 3481 3482 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) { 3483 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0, 3484 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]); 3485 if (rc) { 3486 dev_err(&pci_dev->dev, 3487 "irq %u init failed with error %d\n", 3488 pci_irq_vector(pci_dev, i), rc); 3489 return rc; 3490 } 3491 ctrl_info->num_msix_vectors_initialized++; 3492 } 3493 3494 return 0; 3495 } 3496 3497 static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info) 3498 { 3499 int i; 3500 3501 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++) 3502 free_irq(pci_irq_vector(ctrl_info->pci_dev, i), 3503 &ctrl_info->queue_groups[i]); 3504 3505 ctrl_info->num_msix_vectors_initialized = 0; 3506 } 3507 3508 static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info) 3509 { 3510 int num_vectors_enabled; 3511 3512 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev, 3513 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups, 3514 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); 3515 if (num_vectors_enabled < 0) { 3516 dev_err(&ctrl_info->pci_dev->dev, 3517 "MSI-X init failed with error %d\n", 3518 num_vectors_enabled); 3519 return num_vectors_enabled; 3520 } 3521 3522 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled; 3523 ctrl_info->irq_mode = IRQ_MODE_MSIX; 3524 return 0; 3525 } 3526 3527 static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info) 3528 { 3529 if (ctrl_info->num_msix_vectors_enabled) { 3530 pci_free_irq_vectors(ctrl_info->pci_dev); 3531 ctrl_info->num_msix_vectors_enabled = 0; 3532 } 3533 } 3534 3535 static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info) 3536 { 3537 unsigned int i; 3538 size_t alloc_length; 3539 size_t element_array_length_per_iq; 3540 size_t element_array_length_per_oq; 3541 void *element_array; 3542 void __iomem *next_queue_index; 3543 void *aligned_pointer; 3544 unsigned int num_inbound_queues; 3545 unsigned int num_outbound_queues; 3546 unsigned int num_queue_indexes; 3547 struct pqi_queue_group *queue_group; 3548 3549 element_array_length_per_iq = 3550 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH * 3551 ctrl_info->num_elements_per_iq; 3552 element_array_length_per_oq = 3553 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH * 3554 ctrl_info->num_elements_per_oq; 3555 num_inbound_queues = ctrl_info->num_queue_groups * 2; 3556 num_outbound_queues = ctrl_info->num_queue_groups; 3557 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1; 3558 3559 aligned_pointer = NULL; 3560 3561 for (i = 0; i < num_inbound_queues; i++) { 3562 aligned_pointer = PTR_ALIGN(aligned_pointer, 3563 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3564 aligned_pointer += element_array_length_per_iq; 3565 } 3566 3567 for (i = 0; i < num_outbound_queues; i++) { 3568 aligned_pointer = PTR_ALIGN(aligned_pointer, 3569 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3570 aligned_pointer += element_array_length_per_oq; 3571 } 3572 3573 aligned_pointer = PTR_ALIGN(aligned_pointer, 3574 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3575 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS * 3576 PQI_EVENT_OQ_ELEMENT_LENGTH; 3577 3578 for (i = 0; i < num_queue_indexes; i++) { 3579 aligned_pointer = PTR_ALIGN(aligned_pointer, 3580 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3581 aligned_pointer += sizeof(pqi_index_t); 3582 } 3583 3584 alloc_length = (size_t)aligned_pointer + 3585 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT; 3586 3587 alloc_length += PQI_EXTRA_SGL_MEMORY; 3588 3589 ctrl_info->queue_memory_base = 3590 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length, 3591 &ctrl_info->queue_memory_base_dma_handle, 3592 GFP_KERNEL); 3593 3594 if (!ctrl_info->queue_memory_base) 3595 return -ENOMEM; 3596 3597 ctrl_info->queue_memory_length = alloc_length; 3598 3599 element_array = PTR_ALIGN(ctrl_info->queue_memory_base, 3600 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3601 3602 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3603 queue_group = &ctrl_info->queue_groups[i]; 3604 queue_group->iq_element_array[RAID_PATH] = element_array; 3605 queue_group->iq_element_array_bus_addr[RAID_PATH] = 3606 ctrl_info->queue_memory_base_dma_handle + 3607 (element_array - ctrl_info->queue_memory_base); 3608 element_array += element_array_length_per_iq; 3609 element_array = PTR_ALIGN(element_array, 3610 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3611 queue_group->iq_element_array[AIO_PATH] = element_array; 3612 queue_group->iq_element_array_bus_addr[AIO_PATH] = 3613 ctrl_info->queue_memory_base_dma_handle + 3614 (element_array - ctrl_info->queue_memory_base); 3615 element_array += element_array_length_per_iq; 3616 element_array = PTR_ALIGN(element_array, 3617 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3618 } 3619 3620 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3621 queue_group = &ctrl_info->queue_groups[i]; 3622 queue_group->oq_element_array = element_array; 3623 queue_group->oq_element_array_bus_addr = 3624 ctrl_info->queue_memory_base_dma_handle + 3625 (element_array - ctrl_info->queue_memory_base); 3626 element_array += element_array_length_per_oq; 3627 element_array = PTR_ALIGN(element_array, 3628 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3629 } 3630 3631 ctrl_info->event_queue.oq_element_array = element_array; 3632 ctrl_info->event_queue.oq_element_array_bus_addr = 3633 ctrl_info->queue_memory_base_dma_handle + 3634 (element_array - ctrl_info->queue_memory_base); 3635 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS * 3636 PQI_EVENT_OQ_ELEMENT_LENGTH; 3637 3638 next_queue_index = (void __iomem *)PTR_ALIGN(element_array, 3639 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3640 3641 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3642 queue_group = &ctrl_info->queue_groups[i]; 3643 queue_group->iq_ci[RAID_PATH] = next_queue_index; 3644 queue_group->iq_ci_bus_addr[RAID_PATH] = 3645 ctrl_info->queue_memory_base_dma_handle + 3646 (next_queue_index - 3647 (void __iomem *)ctrl_info->queue_memory_base); 3648 next_queue_index += sizeof(pqi_index_t); 3649 next_queue_index = PTR_ALIGN(next_queue_index, 3650 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3651 queue_group->iq_ci[AIO_PATH] = next_queue_index; 3652 queue_group->iq_ci_bus_addr[AIO_PATH] = 3653 ctrl_info->queue_memory_base_dma_handle + 3654 (next_queue_index - 3655 (void __iomem *)ctrl_info->queue_memory_base); 3656 next_queue_index += sizeof(pqi_index_t); 3657 next_queue_index = PTR_ALIGN(next_queue_index, 3658 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3659 queue_group->oq_pi = next_queue_index; 3660 queue_group->oq_pi_bus_addr = 3661 ctrl_info->queue_memory_base_dma_handle + 3662 (next_queue_index - 3663 (void __iomem *)ctrl_info->queue_memory_base); 3664 next_queue_index += sizeof(pqi_index_t); 3665 next_queue_index = PTR_ALIGN(next_queue_index, 3666 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3667 } 3668 3669 ctrl_info->event_queue.oq_pi = next_queue_index; 3670 ctrl_info->event_queue.oq_pi_bus_addr = 3671 ctrl_info->queue_memory_base_dma_handle + 3672 (next_queue_index - 3673 (void __iomem *)ctrl_info->queue_memory_base); 3674 3675 return 0; 3676 } 3677 3678 static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info) 3679 { 3680 unsigned int i; 3681 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID; 3682 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID; 3683 3684 /* 3685 * Initialize the backpointers to the controller structure in 3686 * each operational queue group structure. 3687 */ 3688 for (i = 0; i < ctrl_info->num_queue_groups; i++) 3689 ctrl_info->queue_groups[i].ctrl_info = ctrl_info; 3690 3691 /* 3692 * Assign IDs to all operational queues. Note that the IDs 3693 * assigned to operational IQs are independent of the IDs 3694 * assigned to operational OQs. 3695 */ 3696 ctrl_info->event_queue.oq_id = next_oq_id++; 3697 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3698 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++; 3699 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++; 3700 ctrl_info->queue_groups[i].oq_id = next_oq_id++; 3701 } 3702 3703 /* 3704 * Assign MSI-X table entry indexes to all queues. Note that the 3705 * interrupt for the event queue is shared with the first queue group. 3706 */ 3707 ctrl_info->event_queue.int_msg_num = 0; 3708 for (i = 0; i < ctrl_info->num_queue_groups; i++) 3709 ctrl_info->queue_groups[i].int_msg_num = i; 3710 3711 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3712 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]); 3713 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]); 3714 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]); 3715 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]); 3716 } 3717 } 3718 3719 static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info) 3720 { 3721 size_t alloc_length; 3722 struct pqi_admin_queues_aligned *admin_queues_aligned; 3723 struct pqi_admin_queues *admin_queues; 3724 3725 alloc_length = sizeof(struct pqi_admin_queues_aligned) + 3726 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT; 3727 3728 ctrl_info->admin_queue_memory_base = 3729 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length, 3730 &ctrl_info->admin_queue_memory_base_dma_handle, 3731 GFP_KERNEL); 3732 3733 if (!ctrl_info->admin_queue_memory_base) 3734 return -ENOMEM; 3735 3736 ctrl_info->admin_queue_memory_length = alloc_length; 3737 3738 admin_queues = &ctrl_info->admin_queues; 3739 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base, 3740 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3741 admin_queues->iq_element_array = 3742 &admin_queues_aligned->iq_element_array; 3743 admin_queues->oq_element_array = 3744 &admin_queues_aligned->oq_element_array; 3745 admin_queues->iq_ci = &admin_queues_aligned->iq_ci; 3746 admin_queues->oq_pi = 3747 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi; 3748 3749 admin_queues->iq_element_array_bus_addr = 3750 ctrl_info->admin_queue_memory_base_dma_handle + 3751 (admin_queues->iq_element_array - 3752 ctrl_info->admin_queue_memory_base); 3753 admin_queues->oq_element_array_bus_addr = 3754 ctrl_info->admin_queue_memory_base_dma_handle + 3755 (admin_queues->oq_element_array - 3756 ctrl_info->admin_queue_memory_base); 3757 admin_queues->iq_ci_bus_addr = 3758 ctrl_info->admin_queue_memory_base_dma_handle + 3759 ((void *)admin_queues->iq_ci - 3760 ctrl_info->admin_queue_memory_base); 3761 admin_queues->oq_pi_bus_addr = 3762 ctrl_info->admin_queue_memory_base_dma_handle + 3763 ((void __iomem *)admin_queues->oq_pi - 3764 (void __iomem *)ctrl_info->admin_queue_memory_base); 3765 3766 return 0; 3767 } 3768 3769 #define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ 3770 #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1 3771 3772 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info) 3773 { 3774 struct pqi_device_registers __iomem *pqi_registers; 3775 struct pqi_admin_queues *admin_queues; 3776 unsigned long timeout; 3777 u8 status; 3778 u32 reg; 3779 3780 pqi_registers = ctrl_info->pqi_registers; 3781 admin_queues = &ctrl_info->admin_queues; 3782 3783 writeq((u64)admin_queues->iq_element_array_bus_addr, 3784 &pqi_registers->admin_iq_element_array_addr); 3785 writeq((u64)admin_queues->oq_element_array_bus_addr, 3786 &pqi_registers->admin_oq_element_array_addr); 3787 writeq((u64)admin_queues->iq_ci_bus_addr, 3788 &pqi_registers->admin_iq_ci_addr); 3789 writeq((u64)admin_queues->oq_pi_bus_addr, 3790 &pqi_registers->admin_oq_pi_addr); 3791 3792 reg = PQI_ADMIN_IQ_NUM_ELEMENTS | 3793 (PQI_ADMIN_OQ_NUM_ELEMENTS << 8) | 3794 (admin_queues->int_msg_num << 16); 3795 writel(reg, &pqi_registers->admin_iq_num_elements); 3796 writel(PQI_CREATE_ADMIN_QUEUE_PAIR, 3797 &pqi_registers->function_and_status_code); 3798 3799 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies; 3800 while (1) { 3801 status = readb(&pqi_registers->function_and_status_code); 3802 if (status == PQI_STATUS_IDLE) 3803 break; 3804 if (time_after(jiffies, timeout)) 3805 return -ETIMEDOUT; 3806 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS); 3807 } 3808 3809 /* 3810 * The offset registers are not initialized to the correct 3811 * offsets until *after* the create admin queue pair command 3812 * completes successfully. 3813 */ 3814 admin_queues->iq_pi = ctrl_info->iomem_base + 3815 PQI_DEVICE_REGISTERS_OFFSET + 3816 readq(&pqi_registers->admin_iq_pi_offset); 3817 admin_queues->oq_ci = ctrl_info->iomem_base + 3818 PQI_DEVICE_REGISTERS_OFFSET + 3819 readq(&pqi_registers->admin_oq_ci_offset); 3820 3821 return 0; 3822 } 3823 3824 static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info, 3825 struct pqi_general_admin_request *request) 3826 { 3827 struct pqi_admin_queues *admin_queues; 3828 void *next_element; 3829 pqi_index_t iq_pi; 3830 3831 admin_queues = &ctrl_info->admin_queues; 3832 iq_pi = admin_queues->iq_pi_copy; 3833 3834 next_element = admin_queues->iq_element_array + 3835 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH); 3836 3837 memcpy(next_element, request, sizeof(*request)); 3838 3839 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS; 3840 admin_queues->iq_pi_copy = iq_pi; 3841 3842 /* 3843 * This write notifies the controller that an IU is available to be 3844 * processed. 3845 */ 3846 writel(iq_pi, admin_queues->iq_pi); 3847 } 3848 3849 #define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60 3850 3851 static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info, 3852 struct pqi_general_admin_response *response) 3853 { 3854 struct pqi_admin_queues *admin_queues; 3855 pqi_index_t oq_pi; 3856 pqi_index_t oq_ci; 3857 unsigned long timeout; 3858 3859 admin_queues = &ctrl_info->admin_queues; 3860 oq_ci = admin_queues->oq_ci_copy; 3861 3862 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies; 3863 3864 while (1) { 3865 oq_pi = readl(admin_queues->oq_pi); 3866 if (oq_pi != oq_ci) 3867 break; 3868 if (time_after(jiffies, timeout)) { 3869 dev_err(&ctrl_info->pci_dev->dev, 3870 "timed out waiting for admin response\n"); 3871 return -ETIMEDOUT; 3872 } 3873 if (!sis_is_firmware_running(ctrl_info)) 3874 return -ENXIO; 3875 usleep_range(1000, 2000); 3876 } 3877 3878 memcpy(response, admin_queues->oq_element_array + 3879 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response)); 3880 3881 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS; 3882 admin_queues->oq_ci_copy = oq_ci; 3883 writel(oq_ci, admin_queues->oq_ci); 3884 3885 return 0; 3886 } 3887 3888 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, 3889 struct pqi_queue_group *queue_group, enum pqi_io_path path, 3890 struct pqi_io_request *io_request) 3891 { 3892 struct pqi_io_request *next; 3893 void *next_element; 3894 pqi_index_t iq_pi; 3895 pqi_index_t iq_ci; 3896 size_t iu_length; 3897 unsigned long flags; 3898 unsigned int num_elements_needed; 3899 unsigned int num_elements_to_end_of_queue; 3900 size_t copy_count; 3901 struct pqi_iu_header *request; 3902 3903 spin_lock_irqsave(&queue_group->submit_lock[path], flags); 3904 3905 if (io_request) { 3906 io_request->queue_group = queue_group; 3907 list_add_tail(&io_request->request_list_entry, 3908 &queue_group->request_list[path]); 3909 } 3910 3911 iq_pi = queue_group->iq_pi_copy[path]; 3912 3913 list_for_each_entry_safe(io_request, next, 3914 &queue_group->request_list[path], request_list_entry) { 3915 3916 request = io_request->iu; 3917 3918 iu_length = get_unaligned_le16(&request->iu_length) + 3919 PQI_REQUEST_HEADER_LENGTH; 3920 num_elements_needed = 3921 DIV_ROUND_UP(iu_length, 3922 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3923 3924 iq_ci = readl(queue_group->iq_ci[path]); 3925 3926 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci, 3927 ctrl_info->num_elements_per_iq)) 3928 break; 3929 3930 put_unaligned_le16(queue_group->oq_id, 3931 &request->response_queue_id); 3932 3933 next_element = queue_group->iq_element_array[path] + 3934 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3935 3936 num_elements_to_end_of_queue = 3937 ctrl_info->num_elements_per_iq - iq_pi; 3938 3939 if (num_elements_needed <= num_elements_to_end_of_queue) { 3940 memcpy(next_element, request, iu_length); 3941 } else { 3942 copy_count = num_elements_to_end_of_queue * 3943 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 3944 memcpy(next_element, request, copy_count); 3945 memcpy(queue_group->iq_element_array[path], 3946 (u8 *)request + copy_count, 3947 iu_length - copy_count); 3948 } 3949 3950 iq_pi = (iq_pi + num_elements_needed) % 3951 ctrl_info->num_elements_per_iq; 3952 3953 list_del(&io_request->request_list_entry); 3954 } 3955 3956 if (iq_pi != queue_group->iq_pi_copy[path]) { 3957 queue_group->iq_pi_copy[path] = iq_pi; 3958 /* 3959 * This write notifies the controller that one or more IUs are 3960 * available to be processed. 3961 */ 3962 writel(iq_pi, queue_group->iq_pi[path]); 3963 } 3964 3965 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags); 3966 } 3967 3968 #define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10 3969 3970 static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info, 3971 struct completion *wait) 3972 { 3973 int rc; 3974 3975 while (1) { 3976 if (wait_for_completion_io_timeout(wait, 3977 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) { 3978 rc = 0; 3979 break; 3980 } 3981 3982 pqi_check_ctrl_health(ctrl_info); 3983 if (pqi_ctrl_offline(ctrl_info)) { 3984 rc = -ENXIO; 3985 break; 3986 } 3987 } 3988 3989 return rc; 3990 } 3991 3992 static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request, 3993 void *context) 3994 { 3995 struct completion *waiting = context; 3996 3997 complete(waiting); 3998 } 3999 4000 static int pqi_process_raid_io_error_synchronous( 4001 struct pqi_raid_error_info *error_info) 4002 { 4003 int rc = -EIO; 4004 4005 switch (error_info->data_out_result) { 4006 case PQI_DATA_IN_OUT_GOOD: 4007 if (error_info->status == SAM_STAT_GOOD) 4008 rc = 0; 4009 break; 4010 case PQI_DATA_IN_OUT_UNDERFLOW: 4011 if (error_info->status == SAM_STAT_GOOD || 4012 error_info->status == SAM_STAT_CHECK_CONDITION) 4013 rc = 0; 4014 break; 4015 case PQI_DATA_IN_OUT_ABORTED: 4016 rc = PQI_CMD_STATUS_ABORTED; 4017 break; 4018 } 4019 4020 return rc; 4021 } 4022 4023 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, 4024 struct pqi_iu_header *request, unsigned int flags, 4025 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) 4026 { 4027 int rc = 0; 4028 struct pqi_io_request *io_request; 4029 unsigned long start_jiffies; 4030 unsigned long msecs_blocked; 4031 size_t iu_length; 4032 DECLARE_COMPLETION_ONSTACK(wait); 4033 4034 /* 4035 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value 4036 * are mutually exclusive. 4037 */ 4038 4039 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) { 4040 if (down_interruptible(&ctrl_info->sync_request_sem)) 4041 return -ERESTARTSYS; 4042 } else { 4043 if (timeout_msecs == NO_TIMEOUT) { 4044 down(&ctrl_info->sync_request_sem); 4045 } else { 4046 start_jiffies = jiffies; 4047 if (down_timeout(&ctrl_info->sync_request_sem, 4048 msecs_to_jiffies(timeout_msecs))) 4049 return -ETIMEDOUT; 4050 msecs_blocked = 4051 jiffies_to_msecs(jiffies - start_jiffies); 4052 if (msecs_blocked >= timeout_msecs) { 4053 rc = -ETIMEDOUT; 4054 goto out; 4055 } 4056 timeout_msecs -= msecs_blocked; 4057 } 4058 } 4059 4060 pqi_ctrl_busy(ctrl_info); 4061 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs); 4062 if (timeout_msecs == 0) { 4063 pqi_ctrl_unbusy(ctrl_info); 4064 rc = -ETIMEDOUT; 4065 goto out; 4066 } 4067 4068 if (pqi_ctrl_offline(ctrl_info)) { 4069 pqi_ctrl_unbusy(ctrl_info); 4070 rc = -ENXIO; 4071 goto out; 4072 } 4073 4074 atomic_inc(&ctrl_info->sync_cmds_outstanding); 4075 4076 io_request = pqi_alloc_io_request(ctrl_info); 4077 4078 put_unaligned_le16(io_request->index, 4079 &(((struct pqi_raid_path_request *)request)->request_id)); 4080 4081 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO) 4082 ((struct pqi_raid_path_request *)request)->error_index = 4083 ((struct pqi_raid_path_request *)request)->request_id; 4084 4085 iu_length = get_unaligned_le16(&request->iu_length) + 4086 PQI_REQUEST_HEADER_LENGTH; 4087 memcpy(io_request->iu, request, iu_length); 4088 4089 io_request->io_complete_callback = pqi_raid_synchronous_complete; 4090 io_request->context = &wait; 4091 4092 pqi_start_io(ctrl_info, 4093 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 4094 io_request); 4095 4096 pqi_ctrl_unbusy(ctrl_info); 4097 4098 if (timeout_msecs == NO_TIMEOUT) { 4099 pqi_wait_for_completion_io(ctrl_info, &wait); 4100 } else { 4101 if (!wait_for_completion_io_timeout(&wait, 4102 msecs_to_jiffies(timeout_msecs))) { 4103 dev_warn(&ctrl_info->pci_dev->dev, 4104 "command timed out\n"); 4105 rc = -ETIMEDOUT; 4106 } 4107 } 4108 4109 if (error_info) { 4110 if (io_request->error_info) 4111 memcpy(error_info, io_request->error_info, 4112 sizeof(*error_info)); 4113 else 4114 memset(error_info, 0, sizeof(*error_info)); 4115 } else if (rc == 0 && io_request->error_info) { 4116 rc = pqi_process_raid_io_error_synchronous( 4117 io_request->error_info); 4118 } 4119 4120 pqi_free_io_request(io_request); 4121 4122 atomic_dec(&ctrl_info->sync_cmds_outstanding); 4123 out: 4124 up(&ctrl_info->sync_request_sem); 4125 4126 return rc; 4127 } 4128 4129 static int pqi_validate_admin_response( 4130 struct pqi_general_admin_response *response, u8 expected_function_code) 4131 { 4132 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN) 4133 return -EINVAL; 4134 4135 if (get_unaligned_le16(&response->header.iu_length) != 4136 PQI_GENERAL_ADMIN_IU_LENGTH) 4137 return -EINVAL; 4138 4139 if (response->function_code != expected_function_code) 4140 return -EINVAL; 4141 4142 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) 4143 return -EINVAL; 4144 4145 return 0; 4146 } 4147 4148 static int pqi_submit_admin_request_synchronous( 4149 struct pqi_ctrl_info *ctrl_info, 4150 struct pqi_general_admin_request *request, 4151 struct pqi_general_admin_response *response) 4152 { 4153 int rc; 4154 4155 pqi_submit_admin_request(ctrl_info, request); 4156 4157 rc = pqi_poll_for_admin_response(ctrl_info, response); 4158 4159 if (rc == 0) 4160 rc = pqi_validate_admin_response(response, 4161 request->function_code); 4162 4163 return rc; 4164 } 4165 4166 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info) 4167 { 4168 int rc; 4169 struct pqi_general_admin_request request; 4170 struct pqi_general_admin_response response; 4171 struct pqi_device_capability *capability; 4172 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor; 4173 4174 capability = kmalloc(sizeof(*capability), GFP_KERNEL); 4175 if (!capability) 4176 return -ENOMEM; 4177 4178 memset(&request, 0, sizeof(request)); 4179 4180 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4181 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4182 &request.header.iu_length); 4183 request.function_code = 4184 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY; 4185 put_unaligned_le32(sizeof(*capability), 4186 &request.data.report_device_capability.buffer_length); 4187 4188 rc = pqi_map_single(ctrl_info->pci_dev, 4189 &request.data.report_device_capability.sg_descriptor, 4190 capability, sizeof(*capability), 4191 DMA_FROM_DEVICE); 4192 if (rc) 4193 goto out; 4194 4195 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4196 &response); 4197 4198 pqi_pci_unmap(ctrl_info->pci_dev, 4199 &request.data.report_device_capability.sg_descriptor, 1, 4200 DMA_FROM_DEVICE); 4201 4202 if (rc) 4203 goto out; 4204 4205 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) { 4206 rc = -EIO; 4207 goto out; 4208 } 4209 4210 ctrl_info->max_inbound_queues = 4211 get_unaligned_le16(&capability->max_inbound_queues); 4212 ctrl_info->max_elements_per_iq = 4213 get_unaligned_le16(&capability->max_elements_per_iq); 4214 ctrl_info->max_iq_element_length = 4215 get_unaligned_le16(&capability->max_iq_element_length) 4216 * 16; 4217 ctrl_info->max_outbound_queues = 4218 get_unaligned_le16(&capability->max_outbound_queues); 4219 ctrl_info->max_elements_per_oq = 4220 get_unaligned_le16(&capability->max_elements_per_oq); 4221 ctrl_info->max_oq_element_length = 4222 get_unaligned_le16(&capability->max_oq_element_length) 4223 * 16; 4224 4225 sop_iu_layer_descriptor = 4226 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP]; 4227 4228 ctrl_info->max_inbound_iu_length_per_firmware = 4229 get_unaligned_le16( 4230 &sop_iu_layer_descriptor->max_inbound_iu_length); 4231 ctrl_info->inbound_spanning_supported = 4232 sop_iu_layer_descriptor->inbound_spanning_supported; 4233 ctrl_info->outbound_spanning_supported = 4234 sop_iu_layer_descriptor->outbound_spanning_supported; 4235 4236 out: 4237 kfree(capability); 4238 4239 return rc; 4240 } 4241 4242 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info) 4243 { 4244 if (ctrl_info->max_iq_element_length < 4245 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 4246 dev_err(&ctrl_info->pci_dev->dev, 4247 "max. inbound queue element length of %d is less than the required length of %d\n", 4248 ctrl_info->max_iq_element_length, 4249 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4250 return -EINVAL; 4251 } 4252 4253 if (ctrl_info->max_oq_element_length < 4254 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) { 4255 dev_err(&ctrl_info->pci_dev->dev, 4256 "max. outbound queue element length of %d is less than the required length of %d\n", 4257 ctrl_info->max_oq_element_length, 4258 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 4259 return -EINVAL; 4260 } 4261 4262 if (ctrl_info->max_inbound_iu_length_per_firmware < 4263 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 4264 dev_err(&ctrl_info->pci_dev->dev, 4265 "max. inbound IU length of %u is less than the min. required length of %d\n", 4266 ctrl_info->max_inbound_iu_length_per_firmware, 4267 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4268 return -EINVAL; 4269 } 4270 4271 if (!ctrl_info->inbound_spanning_supported) { 4272 dev_err(&ctrl_info->pci_dev->dev, 4273 "the controller does not support inbound spanning\n"); 4274 return -EINVAL; 4275 } 4276 4277 if (ctrl_info->outbound_spanning_supported) { 4278 dev_err(&ctrl_info->pci_dev->dev, 4279 "the controller supports outbound spanning but this driver does not\n"); 4280 return -EINVAL; 4281 } 4282 4283 return 0; 4284 } 4285 4286 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info) 4287 { 4288 int rc; 4289 struct pqi_event_queue *event_queue; 4290 struct pqi_general_admin_request request; 4291 struct pqi_general_admin_response response; 4292 4293 event_queue = &ctrl_info->event_queue; 4294 4295 /* 4296 * Create OQ (Outbound Queue - device to host queue) to dedicate 4297 * to events. 4298 */ 4299 memset(&request, 0, sizeof(request)); 4300 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4301 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4302 &request.header.iu_length); 4303 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4304 put_unaligned_le16(event_queue->oq_id, 4305 &request.data.create_operational_oq.queue_id); 4306 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr, 4307 &request.data.create_operational_oq.element_array_addr); 4308 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr, 4309 &request.data.create_operational_oq.pi_addr); 4310 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS, 4311 &request.data.create_operational_oq.num_elements); 4312 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16, 4313 &request.data.create_operational_oq.element_length); 4314 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4315 put_unaligned_le16(event_queue->int_msg_num, 4316 &request.data.create_operational_oq.int_msg_num); 4317 4318 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4319 &response); 4320 if (rc) 4321 return rc; 4322 4323 event_queue->oq_ci = ctrl_info->iomem_base + 4324 PQI_DEVICE_REGISTERS_OFFSET + 4325 get_unaligned_le64( 4326 &response.data.create_operational_oq.oq_ci_offset); 4327 4328 return 0; 4329 } 4330 4331 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info, 4332 unsigned int group_number) 4333 { 4334 int rc; 4335 struct pqi_queue_group *queue_group; 4336 struct pqi_general_admin_request request; 4337 struct pqi_general_admin_response response; 4338 4339 queue_group = &ctrl_info->queue_groups[group_number]; 4340 4341 /* 4342 * Create IQ (Inbound Queue - host to device queue) for 4343 * RAID path. 4344 */ 4345 memset(&request, 0, sizeof(request)); 4346 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4347 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4348 &request.header.iu_length); 4349 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4350 put_unaligned_le16(queue_group->iq_id[RAID_PATH], 4351 &request.data.create_operational_iq.queue_id); 4352 put_unaligned_le64( 4353 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH], 4354 &request.data.create_operational_iq.element_array_addr); 4355 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH], 4356 &request.data.create_operational_iq.ci_addr); 4357 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4358 &request.data.create_operational_iq.num_elements); 4359 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4360 &request.data.create_operational_iq.element_length); 4361 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4362 4363 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4364 &response); 4365 if (rc) { 4366 dev_err(&ctrl_info->pci_dev->dev, 4367 "error creating inbound RAID queue\n"); 4368 return rc; 4369 } 4370 4371 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base + 4372 PQI_DEVICE_REGISTERS_OFFSET + 4373 get_unaligned_le64( 4374 &response.data.create_operational_iq.iq_pi_offset); 4375 4376 /* 4377 * Create IQ (Inbound Queue - host to device queue) for 4378 * Advanced I/O (AIO) path. 4379 */ 4380 memset(&request, 0, sizeof(request)); 4381 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4382 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4383 &request.header.iu_length); 4384 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4385 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4386 &request.data.create_operational_iq.queue_id); 4387 put_unaligned_le64((u64)queue_group-> 4388 iq_element_array_bus_addr[AIO_PATH], 4389 &request.data.create_operational_iq.element_array_addr); 4390 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH], 4391 &request.data.create_operational_iq.ci_addr); 4392 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4393 &request.data.create_operational_iq.num_elements); 4394 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4395 &request.data.create_operational_iq.element_length); 4396 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4397 4398 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4399 &response); 4400 if (rc) { 4401 dev_err(&ctrl_info->pci_dev->dev, 4402 "error creating inbound AIO queue\n"); 4403 return rc; 4404 } 4405 4406 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base + 4407 PQI_DEVICE_REGISTERS_OFFSET + 4408 get_unaligned_le64( 4409 &response.data.create_operational_iq.iq_pi_offset); 4410 4411 /* 4412 * Designate the 2nd IQ as the AIO path. By default, all IQs are 4413 * assumed to be for RAID path I/O unless we change the queue's 4414 * property. 4415 */ 4416 memset(&request, 0, sizeof(request)); 4417 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4418 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4419 &request.header.iu_length); 4420 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY; 4421 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4422 &request.data.change_operational_iq_properties.queue_id); 4423 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE, 4424 &request.data.change_operational_iq_properties.vendor_specific); 4425 4426 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4427 &response); 4428 if (rc) { 4429 dev_err(&ctrl_info->pci_dev->dev, 4430 "error changing queue property\n"); 4431 return rc; 4432 } 4433 4434 /* 4435 * Create OQ (Outbound Queue - device to host queue). 4436 */ 4437 memset(&request, 0, sizeof(request)); 4438 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4439 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4440 &request.header.iu_length); 4441 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4442 put_unaligned_le16(queue_group->oq_id, 4443 &request.data.create_operational_oq.queue_id); 4444 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr, 4445 &request.data.create_operational_oq.element_array_addr); 4446 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr, 4447 &request.data.create_operational_oq.pi_addr); 4448 put_unaligned_le16(ctrl_info->num_elements_per_oq, 4449 &request.data.create_operational_oq.num_elements); 4450 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16, 4451 &request.data.create_operational_oq.element_length); 4452 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4453 put_unaligned_le16(queue_group->int_msg_num, 4454 &request.data.create_operational_oq.int_msg_num); 4455 4456 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4457 &response); 4458 if (rc) { 4459 dev_err(&ctrl_info->pci_dev->dev, 4460 "error creating outbound queue\n"); 4461 return rc; 4462 } 4463 4464 queue_group->oq_ci = ctrl_info->iomem_base + 4465 PQI_DEVICE_REGISTERS_OFFSET + 4466 get_unaligned_le64( 4467 &response.data.create_operational_oq.oq_ci_offset); 4468 4469 return 0; 4470 } 4471 4472 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info) 4473 { 4474 int rc; 4475 unsigned int i; 4476 4477 rc = pqi_create_event_queue(ctrl_info); 4478 if (rc) { 4479 dev_err(&ctrl_info->pci_dev->dev, 4480 "error creating event queue\n"); 4481 return rc; 4482 } 4483 4484 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 4485 rc = pqi_create_queue_group(ctrl_info, i); 4486 if (rc) { 4487 dev_err(&ctrl_info->pci_dev->dev, 4488 "error creating queue group number %u/%u\n", 4489 i, ctrl_info->num_queue_groups); 4490 return rc; 4491 } 4492 } 4493 4494 return 0; 4495 } 4496 4497 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \ 4498 (offsetof(struct pqi_event_config, descriptors) + \ 4499 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor))) 4500 4501 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info, 4502 bool enable_events) 4503 { 4504 int rc; 4505 unsigned int i; 4506 struct pqi_event_config *event_config; 4507 struct pqi_event_descriptor *event_descriptor; 4508 struct pqi_general_management_request request; 4509 4510 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4511 GFP_KERNEL); 4512 if (!event_config) 4513 return -ENOMEM; 4514 4515 memset(&request, 0, sizeof(request)); 4516 4517 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG; 4518 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4519 data.report_event_configuration.sg_descriptors[1]) - 4520 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4521 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4522 &request.data.report_event_configuration.buffer_length); 4523 4524 rc = pqi_map_single(ctrl_info->pci_dev, 4525 request.data.report_event_configuration.sg_descriptors, 4526 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4527 DMA_FROM_DEVICE); 4528 if (rc) 4529 goto out; 4530 4531 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 4532 0, NULL, NO_TIMEOUT); 4533 4534 pqi_pci_unmap(ctrl_info->pci_dev, 4535 request.data.report_event_configuration.sg_descriptors, 1, 4536 DMA_FROM_DEVICE); 4537 4538 if (rc) 4539 goto out; 4540 4541 for (i = 0; i < event_config->num_event_descriptors; i++) { 4542 event_descriptor = &event_config->descriptors[i]; 4543 if (enable_events && 4544 pqi_is_supported_event(event_descriptor->event_type)) 4545 put_unaligned_le16(ctrl_info->event_queue.oq_id, 4546 &event_descriptor->oq_id); 4547 else 4548 put_unaligned_le16(0, &event_descriptor->oq_id); 4549 } 4550 4551 memset(&request, 0, sizeof(request)); 4552 4553 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG; 4554 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4555 data.report_event_configuration.sg_descriptors[1]) - 4556 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4557 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4558 &request.data.report_event_configuration.buffer_length); 4559 4560 rc = pqi_map_single(ctrl_info->pci_dev, 4561 request.data.report_event_configuration.sg_descriptors, 4562 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4563 DMA_TO_DEVICE); 4564 if (rc) 4565 goto out; 4566 4567 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 4568 NULL, NO_TIMEOUT); 4569 4570 pqi_pci_unmap(ctrl_info->pci_dev, 4571 request.data.report_event_configuration.sg_descriptors, 1, 4572 DMA_TO_DEVICE); 4573 4574 out: 4575 kfree(event_config); 4576 4577 return rc; 4578 } 4579 4580 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info) 4581 { 4582 return pqi_configure_events(ctrl_info, true); 4583 } 4584 4585 static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info) 4586 { 4587 return pqi_configure_events(ctrl_info, false); 4588 } 4589 4590 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info) 4591 { 4592 unsigned int i; 4593 struct device *dev; 4594 size_t sg_chain_buffer_length; 4595 struct pqi_io_request *io_request; 4596 4597 if (!ctrl_info->io_request_pool) 4598 return; 4599 4600 dev = &ctrl_info->pci_dev->dev; 4601 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4602 io_request = ctrl_info->io_request_pool; 4603 4604 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4605 kfree(io_request->iu); 4606 if (!io_request->sg_chain_buffer) 4607 break; 4608 dma_free_coherent(dev, sg_chain_buffer_length, 4609 io_request->sg_chain_buffer, 4610 io_request->sg_chain_buffer_dma_handle); 4611 io_request++; 4612 } 4613 4614 kfree(ctrl_info->io_request_pool); 4615 ctrl_info->io_request_pool = NULL; 4616 } 4617 4618 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info) 4619 { 4620 4621 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev, 4622 ctrl_info->error_buffer_length, 4623 &ctrl_info->error_buffer_dma_handle, 4624 GFP_KERNEL); 4625 if (!ctrl_info->error_buffer) 4626 return -ENOMEM; 4627 4628 return 0; 4629 } 4630 4631 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info) 4632 { 4633 unsigned int i; 4634 void *sg_chain_buffer; 4635 size_t sg_chain_buffer_length; 4636 dma_addr_t sg_chain_buffer_dma_handle; 4637 struct device *dev; 4638 struct pqi_io_request *io_request; 4639 4640 ctrl_info->io_request_pool = 4641 kcalloc(ctrl_info->max_io_slots, 4642 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL); 4643 4644 if (!ctrl_info->io_request_pool) { 4645 dev_err(&ctrl_info->pci_dev->dev, 4646 "failed to allocate I/O request pool\n"); 4647 goto error; 4648 } 4649 4650 dev = &ctrl_info->pci_dev->dev; 4651 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4652 io_request = ctrl_info->io_request_pool; 4653 4654 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4655 io_request->iu = 4656 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL); 4657 4658 if (!io_request->iu) { 4659 dev_err(&ctrl_info->pci_dev->dev, 4660 "failed to allocate IU buffers\n"); 4661 goto error; 4662 } 4663 4664 sg_chain_buffer = dma_alloc_coherent(dev, 4665 sg_chain_buffer_length, &sg_chain_buffer_dma_handle, 4666 GFP_KERNEL); 4667 4668 if (!sg_chain_buffer) { 4669 dev_err(&ctrl_info->pci_dev->dev, 4670 "failed to allocate PQI scatter-gather chain buffers\n"); 4671 goto error; 4672 } 4673 4674 io_request->index = i; 4675 io_request->sg_chain_buffer = sg_chain_buffer; 4676 io_request->sg_chain_buffer_dma_handle = 4677 sg_chain_buffer_dma_handle; 4678 io_request++; 4679 } 4680 4681 return 0; 4682 4683 error: 4684 pqi_free_all_io_requests(ctrl_info); 4685 4686 return -ENOMEM; 4687 } 4688 4689 /* 4690 * Calculate required resources that are sized based on max. outstanding 4691 * requests and max. transfer size. 4692 */ 4693 4694 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info) 4695 { 4696 u32 max_transfer_size; 4697 u32 max_sg_entries; 4698 4699 ctrl_info->scsi_ml_can_queue = 4700 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS; 4701 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests; 4702 4703 ctrl_info->error_buffer_length = 4704 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH; 4705 4706 if (reset_devices) 4707 max_transfer_size = min(ctrl_info->max_transfer_size, 4708 PQI_MAX_TRANSFER_SIZE_KDUMP); 4709 else 4710 max_transfer_size = min(ctrl_info->max_transfer_size, 4711 PQI_MAX_TRANSFER_SIZE); 4712 4713 max_sg_entries = max_transfer_size / PAGE_SIZE; 4714 4715 /* +1 to cover when the buffer is not page-aligned. */ 4716 max_sg_entries++; 4717 4718 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries); 4719 4720 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE; 4721 4722 ctrl_info->sg_chain_buffer_length = 4723 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) + 4724 PQI_EXTRA_SGL_MEMORY; 4725 ctrl_info->sg_tablesize = max_sg_entries; 4726 ctrl_info->max_sectors = max_transfer_size / 512; 4727 } 4728 4729 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info) 4730 { 4731 int num_queue_groups; 4732 u16 num_elements_per_iq; 4733 u16 num_elements_per_oq; 4734 4735 if (reset_devices) { 4736 num_queue_groups = 1; 4737 } else { 4738 int num_cpus; 4739 int max_queue_groups; 4740 4741 max_queue_groups = min(ctrl_info->max_inbound_queues / 2, 4742 ctrl_info->max_outbound_queues - 1); 4743 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS); 4744 4745 num_cpus = num_online_cpus(); 4746 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors); 4747 num_queue_groups = min(num_queue_groups, max_queue_groups); 4748 } 4749 4750 ctrl_info->num_queue_groups = num_queue_groups; 4751 ctrl_info->max_hw_queue_index = num_queue_groups - 1; 4752 4753 /* 4754 * Make sure that the max. inbound IU length is an even multiple 4755 * of our inbound element length. 4756 */ 4757 ctrl_info->max_inbound_iu_length = 4758 (ctrl_info->max_inbound_iu_length_per_firmware / 4759 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) * 4760 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 4761 4762 num_elements_per_iq = 4763 (ctrl_info->max_inbound_iu_length / 4764 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4765 4766 /* Add one because one element in each queue is unusable. */ 4767 num_elements_per_iq++; 4768 4769 num_elements_per_iq = min(num_elements_per_iq, 4770 ctrl_info->max_elements_per_iq); 4771 4772 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1; 4773 num_elements_per_oq = min(num_elements_per_oq, 4774 ctrl_info->max_elements_per_oq); 4775 4776 ctrl_info->num_elements_per_iq = num_elements_per_iq; 4777 ctrl_info->num_elements_per_oq = num_elements_per_oq; 4778 4779 ctrl_info->max_sg_per_iu = 4780 ((ctrl_info->max_inbound_iu_length - 4781 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) / 4782 sizeof(struct pqi_sg_descriptor)) + 4783 PQI_MAX_EMBEDDED_SG_DESCRIPTORS; 4784 } 4785 4786 static inline void pqi_set_sg_descriptor( 4787 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg) 4788 { 4789 u64 address = (u64)sg_dma_address(sg); 4790 unsigned int length = sg_dma_len(sg); 4791 4792 put_unaligned_le64(address, &sg_descriptor->address); 4793 put_unaligned_le32(length, &sg_descriptor->length); 4794 put_unaligned_le32(0, &sg_descriptor->flags); 4795 } 4796 4797 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info, 4798 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd, 4799 struct pqi_io_request *io_request) 4800 { 4801 int i; 4802 u16 iu_length; 4803 int sg_count; 4804 bool chained; 4805 unsigned int num_sg_in_iu; 4806 unsigned int max_sg_per_iu; 4807 struct scatterlist *sg; 4808 struct pqi_sg_descriptor *sg_descriptor; 4809 4810 sg_count = scsi_dma_map(scmd); 4811 if (sg_count < 0) 4812 return sg_count; 4813 4814 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 4815 PQI_REQUEST_HEADER_LENGTH; 4816 4817 if (sg_count == 0) 4818 goto out; 4819 4820 sg = scsi_sglist(scmd); 4821 sg_descriptor = request->sg_descriptors; 4822 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4823 chained = false; 4824 num_sg_in_iu = 0; 4825 i = 0; 4826 4827 while (1) { 4828 pqi_set_sg_descriptor(sg_descriptor, sg); 4829 if (!chained) 4830 num_sg_in_iu++; 4831 i++; 4832 if (i == sg_count) 4833 break; 4834 sg_descriptor++; 4835 if (i == max_sg_per_iu) { 4836 put_unaligned_le64( 4837 (u64)io_request->sg_chain_buffer_dma_handle, 4838 &sg_descriptor->address); 4839 put_unaligned_le32((sg_count - num_sg_in_iu) 4840 * sizeof(*sg_descriptor), 4841 &sg_descriptor->length); 4842 put_unaligned_le32(CISS_SG_CHAIN, 4843 &sg_descriptor->flags); 4844 chained = true; 4845 num_sg_in_iu++; 4846 sg_descriptor = io_request->sg_chain_buffer; 4847 } 4848 sg = sg_next(sg); 4849 } 4850 4851 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4852 request->partial = chained; 4853 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4854 4855 out: 4856 put_unaligned_le16(iu_length, &request->header.iu_length); 4857 4858 return 0; 4859 } 4860 4861 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info, 4862 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd, 4863 struct pqi_io_request *io_request) 4864 { 4865 int i; 4866 u16 iu_length; 4867 int sg_count; 4868 bool chained; 4869 unsigned int num_sg_in_iu; 4870 unsigned int max_sg_per_iu; 4871 struct scatterlist *sg; 4872 struct pqi_sg_descriptor *sg_descriptor; 4873 4874 sg_count = scsi_dma_map(scmd); 4875 if (sg_count < 0) 4876 return sg_count; 4877 4878 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) - 4879 PQI_REQUEST_HEADER_LENGTH; 4880 num_sg_in_iu = 0; 4881 4882 if (sg_count == 0) 4883 goto out; 4884 4885 sg = scsi_sglist(scmd); 4886 sg_descriptor = request->sg_descriptors; 4887 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4888 chained = false; 4889 i = 0; 4890 4891 while (1) { 4892 pqi_set_sg_descriptor(sg_descriptor, sg); 4893 if (!chained) 4894 num_sg_in_iu++; 4895 i++; 4896 if (i == sg_count) 4897 break; 4898 sg_descriptor++; 4899 if (i == max_sg_per_iu) { 4900 put_unaligned_le64( 4901 (u64)io_request->sg_chain_buffer_dma_handle, 4902 &sg_descriptor->address); 4903 put_unaligned_le32((sg_count - num_sg_in_iu) 4904 * sizeof(*sg_descriptor), 4905 &sg_descriptor->length); 4906 put_unaligned_le32(CISS_SG_CHAIN, 4907 &sg_descriptor->flags); 4908 chained = true; 4909 num_sg_in_iu++; 4910 sg_descriptor = io_request->sg_chain_buffer; 4911 } 4912 sg = sg_next(sg); 4913 } 4914 4915 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4916 request->partial = chained; 4917 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4918 4919 out: 4920 put_unaligned_le16(iu_length, &request->header.iu_length); 4921 request->num_sg_descriptors = num_sg_in_iu; 4922 4923 return 0; 4924 } 4925 4926 static void pqi_raid_io_complete(struct pqi_io_request *io_request, 4927 void *context) 4928 { 4929 struct scsi_cmnd *scmd; 4930 4931 scmd = io_request->scmd; 4932 pqi_free_io_request(io_request); 4933 scsi_dma_unmap(scmd); 4934 pqi_scsi_done(scmd); 4935 } 4936 4937 static int pqi_raid_submit_scsi_cmd_with_io_request( 4938 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request, 4939 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 4940 struct pqi_queue_group *queue_group) 4941 { 4942 int rc; 4943 size_t cdb_length; 4944 struct pqi_raid_path_request *request; 4945 4946 io_request->io_complete_callback = pqi_raid_io_complete; 4947 io_request->scmd = scmd; 4948 4949 request = io_request->iu; 4950 memset(request, 0, 4951 offsetof(struct pqi_raid_path_request, sg_descriptors)); 4952 4953 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 4954 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 4955 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 4956 put_unaligned_le16(io_request->index, &request->request_id); 4957 request->error_index = request->request_id; 4958 memcpy(request->lun_number, device->scsi3addr, 4959 sizeof(request->lun_number)); 4960 4961 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb)); 4962 memcpy(request->cdb, scmd->cmnd, cdb_length); 4963 4964 switch (cdb_length) { 4965 case 6: 4966 case 10: 4967 case 12: 4968 case 16: 4969 /* No bytes in the Additional CDB bytes field */ 4970 request->additional_cdb_bytes_usage = 4971 SOP_ADDITIONAL_CDB_BYTES_0; 4972 break; 4973 case 20: 4974 /* 4 bytes in the Additional cdb field */ 4975 request->additional_cdb_bytes_usage = 4976 SOP_ADDITIONAL_CDB_BYTES_4; 4977 break; 4978 case 24: 4979 /* 8 bytes in the Additional cdb field */ 4980 request->additional_cdb_bytes_usage = 4981 SOP_ADDITIONAL_CDB_BYTES_8; 4982 break; 4983 case 28: 4984 /* 12 bytes in the Additional cdb field */ 4985 request->additional_cdb_bytes_usage = 4986 SOP_ADDITIONAL_CDB_BYTES_12; 4987 break; 4988 case 32: 4989 default: 4990 /* 16 bytes in the Additional cdb field */ 4991 request->additional_cdb_bytes_usage = 4992 SOP_ADDITIONAL_CDB_BYTES_16; 4993 break; 4994 } 4995 4996 switch (scmd->sc_data_direction) { 4997 case DMA_TO_DEVICE: 4998 request->data_direction = SOP_READ_FLAG; 4999 break; 5000 case DMA_FROM_DEVICE: 5001 request->data_direction = SOP_WRITE_FLAG; 5002 break; 5003 case DMA_NONE: 5004 request->data_direction = SOP_NO_DIRECTION_FLAG; 5005 break; 5006 case DMA_BIDIRECTIONAL: 5007 request->data_direction = SOP_BIDIRECTIONAL; 5008 break; 5009 default: 5010 dev_err(&ctrl_info->pci_dev->dev, 5011 "unknown data direction: %d\n", 5012 scmd->sc_data_direction); 5013 break; 5014 } 5015 5016 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request); 5017 if (rc) { 5018 pqi_free_io_request(io_request); 5019 return SCSI_MLQUEUE_HOST_BUSY; 5020 } 5021 5022 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request); 5023 5024 return 0; 5025 } 5026 5027 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 5028 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 5029 struct pqi_queue_group *queue_group) 5030 { 5031 struct pqi_io_request *io_request; 5032 5033 io_request = pqi_alloc_io_request(ctrl_info); 5034 5035 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 5036 device, scmd, queue_group); 5037 } 5038 5039 static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info) 5040 { 5041 if (!pqi_ctrl_blocked(ctrl_info)) 5042 schedule_work(&ctrl_info->raid_bypass_retry_work); 5043 } 5044 5045 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request) 5046 { 5047 struct scsi_cmnd *scmd; 5048 struct pqi_scsi_dev *device; 5049 struct pqi_ctrl_info *ctrl_info; 5050 5051 if (!io_request->raid_bypass) 5052 return false; 5053 5054 scmd = io_request->scmd; 5055 if ((scmd->result & 0xff) == SAM_STAT_GOOD) 5056 return false; 5057 if (host_byte(scmd->result) == DID_NO_CONNECT) 5058 return false; 5059 5060 device = scmd->device->hostdata; 5061 if (pqi_device_offline(device)) 5062 return false; 5063 5064 ctrl_info = shost_to_hba(scmd->device->host); 5065 if (pqi_ctrl_offline(ctrl_info)) 5066 return false; 5067 5068 return true; 5069 } 5070 5071 static inline void pqi_add_to_raid_bypass_retry_list( 5072 struct pqi_ctrl_info *ctrl_info, 5073 struct pqi_io_request *io_request, bool at_head) 5074 { 5075 unsigned long flags; 5076 5077 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5078 if (at_head) 5079 list_add(&io_request->request_list_entry, 5080 &ctrl_info->raid_bypass_retry_list); 5081 else 5082 list_add_tail(&io_request->request_list_entry, 5083 &ctrl_info->raid_bypass_retry_list); 5084 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5085 } 5086 5087 static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request, 5088 void *context) 5089 { 5090 struct scsi_cmnd *scmd; 5091 5092 scmd = io_request->scmd; 5093 pqi_free_io_request(io_request); 5094 pqi_scsi_done(scmd); 5095 } 5096 5097 static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request) 5098 { 5099 struct scsi_cmnd *scmd; 5100 struct pqi_ctrl_info *ctrl_info; 5101 5102 io_request->io_complete_callback = pqi_queued_raid_bypass_complete; 5103 scmd = io_request->scmd; 5104 scmd->result = 0; 5105 ctrl_info = shost_to_hba(scmd->device->host); 5106 5107 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false); 5108 pqi_schedule_bypass_retry(ctrl_info); 5109 } 5110 5111 static int pqi_retry_raid_bypass(struct pqi_io_request *io_request) 5112 { 5113 struct scsi_cmnd *scmd; 5114 struct pqi_scsi_dev *device; 5115 struct pqi_ctrl_info *ctrl_info; 5116 struct pqi_queue_group *queue_group; 5117 5118 scmd = io_request->scmd; 5119 device = scmd->device->hostdata; 5120 if (pqi_device_in_reset(device)) { 5121 pqi_free_io_request(io_request); 5122 set_host_byte(scmd, DID_RESET); 5123 pqi_scsi_done(scmd); 5124 return 0; 5125 } 5126 5127 ctrl_info = shost_to_hba(scmd->device->host); 5128 queue_group = io_request->queue_group; 5129 5130 pqi_reinit_io_request(io_request); 5131 5132 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 5133 device, scmd, queue_group); 5134 } 5135 5136 static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request( 5137 struct pqi_ctrl_info *ctrl_info) 5138 { 5139 unsigned long flags; 5140 struct pqi_io_request *io_request; 5141 5142 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5143 io_request = list_first_entry_or_null( 5144 &ctrl_info->raid_bypass_retry_list, 5145 struct pqi_io_request, request_list_entry); 5146 if (io_request) 5147 list_del(&io_request->request_list_entry); 5148 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5149 5150 return io_request; 5151 } 5152 5153 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info) 5154 { 5155 int rc; 5156 struct pqi_io_request *io_request; 5157 5158 pqi_ctrl_busy(ctrl_info); 5159 5160 while (1) { 5161 if (pqi_ctrl_blocked(ctrl_info)) 5162 break; 5163 io_request = pqi_next_queued_raid_bypass_request(ctrl_info); 5164 if (!io_request) 5165 break; 5166 rc = pqi_retry_raid_bypass(io_request); 5167 if (rc) { 5168 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, 5169 true); 5170 pqi_schedule_bypass_retry(ctrl_info); 5171 break; 5172 } 5173 } 5174 5175 pqi_ctrl_unbusy(ctrl_info); 5176 } 5177 5178 static void pqi_raid_bypass_retry_worker(struct work_struct *work) 5179 { 5180 struct pqi_ctrl_info *ctrl_info; 5181 5182 ctrl_info = container_of(work, struct pqi_ctrl_info, 5183 raid_bypass_retry_work); 5184 pqi_retry_raid_bypass_requests(ctrl_info); 5185 } 5186 5187 static void pqi_clear_all_queued_raid_bypass_retries( 5188 struct pqi_ctrl_info *ctrl_info) 5189 { 5190 unsigned long flags; 5191 5192 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5193 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 5194 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5195 } 5196 5197 static void pqi_aio_io_complete(struct pqi_io_request *io_request, 5198 void *context) 5199 { 5200 struct scsi_cmnd *scmd; 5201 5202 scmd = io_request->scmd; 5203 scsi_dma_unmap(scmd); 5204 if (io_request->status == -EAGAIN) 5205 set_host_byte(scmd, DID_IMM_RETRY); 5206 else if (pqi_raid_bypass_retry_needed(io_request)) { 5207 pqi_queue_raid_bypass_retry(io_request); 5208 return; 5209 } 5210 pqi_free_io_request(io_request); 5211 pqi_scsi_done(scmd); 5212 } 5213 5214 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 5215 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 5216 struct pqi_queue_group *queue_group) 5217 { 5218 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle, 5219 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false); 5220 } 5221 5222 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, 5223 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, 5224 unsigned int cdb_length, struct pqi_queue_group *queue_group, 5225 struct pqi_encryption_info *encryption_info, bool raid_bypass) 5226 { 5227 int rc; 5228 struct pqi_io_request *io_request; 5229 struct pqi_aio_path_request *request; 5230 5231 io_request = pqi_alloc_io_request(ctrl_info); 5232 io_request->io_complete_callback = pqi_aio_io_complete; 5233 io_request->scmd = scmd; 5234 io_request->raid_bypass = raid_bypass; 5235 5236 request = io_request->iu; 5237 memset(request, 0, 5238 offsetof(struct pqi_raid_path_request, sg_descriptors)); 5239 5240 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO; 5241 put_unaligned_le32(aio_handle, &request->nexus_id); 5242 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 5243 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 5244 put_unaligned_le16(io_request->index, &request->request_id); 5245 request->error_index = request->request_id; 5246 if (cdb_length > sizeof(request->cdb)) 5247 cdb_length = sizeof(request->cdb); 5248 request->cdb_length = cdb_length; 5249 memcpy(request->cdb, cdb, cdb_length); 5250 5251 switch (scmd->sc_data_direction) { 5252 case DMA_TO_DEVICE: 5253 request->data_direction = SOP_READ_FLAG; 5254 break; 5255 case DMA_FROM_DEVICE: 5256 request->data_direction = SOP_WRITE_FLAG; 5257 break; 5258 case DMA_NONE: 5259 request->data_direction = SOP_NO_DIRECTION_FLAG; 5260 break; 5261 case DMA_BIDIRECTIONAL: 5262 request->data_direction = SOP_BIDIRECTIONAL; 5263 break; 5264 default: 5265 dev_err(&ctrl_info->pci_dev->dev, 5266 "unknown data direction: %d\n", 5267 scmd->sc_data_direction); 5268 break; 5269 } 5270 5271 if (encryption_info) { 5272 request->encryption_enable = true; 5273 put_unaligned_le16(encryption_info->data_encryption_key_index, 5274 &request->data_encryption_key_index); 5275 put_unaligned_le32(encryption_info->encrypt_tweak_lower, 5276 &request->encrypt_tweak_lower); 5277 put_unaligned_le32(encryption_info->encrypt_tweak_upper, 5278 &request->encrypt_tweak_upper); 5279 } 5280 5281 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request); 5282 if (rc) { 5283 pqi_free_io_request(io_request); 5284 return SCSI_MLQUEUE_HOST_BUSY; 5285 } 5286 5287 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request); 5288 5289 return 0; 5290 } 5291 5292 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info, 5293 struct scsi_cmnd *scmd) 5294 { 5295 u16 hw_queue; 5296 5297 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request)); 5298 if (hw_queue > ctrl_info->max_hw_queue_index) 5299 hw_queue = 0; 5300 5301 return hw_queue; 5302 } 5303 5304 /* 5305 * This function gets called just before we hand the completed SCSI request 5306 * back to the SML. 5307 */ 5308 5309 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd) 5310 { 5311 struct pqi_scsi_dev *device; 5312 5313 if (!scmd->device) { 5314 set_host_byte(scmd, DID_NO_CONNECT); 5315 return; 5316 } 5317 5318 device = scmd->device->hostdata; 5319 if (!device) { 5320 set_host_byte(scmd, DID_NO_CONNECT); 5321 return; 5322 } 5323 5324 atomic_dec(&device->scsi_cmds_outstanding); 5325 } 5326 5327 static int pqi_scsi_queue_command(struct Scsi_Host *shost, 5328 struct scsi_cmnd *scmd) 5329 { 5330 int rc; 5331 struct pqi_ctrl_info *ctrl_info; 5332 struct pqi_scsi_dev *device; 5333 u16 hw_queue; 5334 struct pqi_queue_group *queue_group; 5335 bool raid_bypassed; 5336 5337 device = scmd->device->hostdata; 5338 ctrl_info = shost_to_hba(shost); 5339 5340 if (!device) { 5341 set_host_byte(scmd, DID_NO_CONNECT); 5342 pqi_scsi_done(scmd); 5343 return 0; 5344 } 5345 5346 atomic_inc(&device->scsi_cmds_outstanding); 5347 5348 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(device)) { 5349 set_host_byte(scmd, DID_NO_CONNECT); 5350 pqi_scsi_done(scmd); 5351 return 0; 5352 } 5353 5354 pqi_ctrl_busy(ctrl_info); 5355 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) || 5356 pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) { 5357 rc = SCSI_MLQUEUE_HOST_BUSY; 5358 goto out; 5359 } 5360 5361 /* 5362 * This is necessary because the SML doesn't zero out this field during 5363 * error recovery. 5364 */ 5365 scmd->result = 0; 5366 5367 hw_queue = pqi_get_hw_queue(ctrl_info, scmd); 5368 queue_group = &ctrl_info->queue_groups[hw_queue]; 5369 5370 if (pqi_is_logical_device(device)) { 5371 raid_bypassed = false; 5372 if (device->raid_bypass_enabled && 5373 !blk_rq_is_passthrough(scmd->request)) { 5374 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, 5375 scmd, queue_group); 5376 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) { 5377 raid_bypassed = true; 5378 atomic_inc(&device->raid_bypass_cnt); 5379 } 5380 } 5381 if (!raid_bypassed) 5382 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group); 5383 } else { 5384 if (device->aio_enabled) 5385 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, queue_group); 5386 else 5387 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group); 5388 } 5389 5390 out: 5391 pqi_ctrl_unbusy(ctrl_info); 5392 if (rc) 5393 atomic_dec(&device->scsi_cmds_outstanding); 5394 5395 return rc; 5396 } 5397 5398 static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info, 5399 struct pqi_queue_group *queue_group) 5400 { 5401 unsigned int path; 5402 unsigned long flags; 5403 bool list_is_empty; 5404 5405 for (path = 0; path < 2; path++) { 5406 while (1) { 5407 spin_lock_irqsave( 5408 &queue_group->submit_lock[path], flags); 5409 list_is_empty = 5410 list_empty(&queue_group->request_list[path]); 5411 spin_unlock_irqrestore( 5412 &queue_group->submit_lock[path], flags); 5413 if (list_is_empty) 5414 break; 5415 pqi_check_ctrl_health(ctrl_info); 5416 if (pqi_ctrl_offline(ctrl_info)) 5417 return -ENXIO; 5418 usleep_range(1000, 2000); 5419 } 5420 } 5421 5422 return 0; 5423 } 5424 5425 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info) 5426 { 5427 int rc; 5428 unsigned int i; 5429 unsigned int path; 5430 struct pqi_queue_group *queue_group; 5431 pqi_index_t iq_pi; 5432 pqi_index_t iq_ci; 5433 5434 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5435 queue_group = &ctrl_info->queue_groups[i]; 5436 5437 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group); 5438 if (rc) 5439 return rc; 5440 5441 for (path = 0; path < 2; path++) { 5442 iq_pi = queue_group->iq_pi_copy[path]; 5443 5444 while (1) { 5445 iq_ci = readl(queue_group->iq_ci[path]); 5446 if (iq_ci == iq_pi) 5447 break; 5448 pqi_check_ctrl_health(ctrl_info); 5449 if (pqi_ctrl_offline(ctrl_info)) 5450 return -ENXIO; 5451 usleep_range(1000, 2000); 5452 } 5453 } 5454 } 5455 5456 return 0; 5457 } 5458 5459 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info, 5460 struct pqi_scsi_dev *device) 5461 { 5462 unsigned int i; 5463 unsigned int path; 5464 struct pqi_queue_group *queue_group; 5465 unsigned long flags; 5466 struct pqi_io_request *io_request; 5467 struct pqi_io_request *next; 5468 struct scsi_cmnd *scmd; 5469 struct pqi_scsi_dev *scsi_device; 5470 5471 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5472 queue_group = &ctrl_info->queue_groups[i]; 5473 5474 for (path = 0; path < 2; path++) { 5475 spin_lock_irqsave( 5476 &queue_group->submit_lock[path], flags); 5477 5478 list_for_each_entry_safe(io_request, next, 5479 &queue_group->request_list[path], 5480 request_list_entry) { 5481 scmd = io_request->scmd; 5482 if (!scmd) 5483 continue; 5484 5485 scsi_device = scmd->device->hostdata; 5486 if (scsi_device != device) 5487 continue; 5488 5489 list_del(&io_request->request_list_entry); 5490 set_host_byte(scmd, DID_RESET); 5491 pqi_scsi_done(scmd); 5492 } 5493 5494 spin_unlock_irqrestore( 5495 &queue_group->submit_lock[path], flags); 5496 } 5497 } 5498 } 5499 5500 static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info) 5501 { 5502 unsigned int i; 5503 unsigned int path; 5504 struct pqi_queue_group *queue_group; 5505 unsigned long flags; 5506 struct pqi_io_request *io_request; 5507 struct pqi_io_request *next; 5508 struct scsi_cmnd *scmd; 5509 5510 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5511 queue_group = &ctrl_info->queue_groups[i]; 5512 5513 for (path = 0; path < 2; path++) { 5514 spin_lock_irqsave(&queue_group->submit_lock[path], 5515 flags); 5516 5517 list_for_each_entry_safe(io_request, next, 5518 &queue_group->request_list[path], 5519 request_list_entry) { 5520 5521 scmd = io_request->scmd; 5522 if (!scmd) 5523 continue; 5524 5525 list_del(&io_request->request_list_entry); 5526 set_host_byte(scmd, DID_RESET); 5527 pqi_scsi_done(scmd); 5528 } 5529 5530 spin_unlock_irqrestore( 5531 &queue_group->submit_lock[path], flags); 5532 } 5533 } 5534 } 5535 5536 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5537 struct pqi_scsi_dev *device, unsigned long timeout_secs) 5538 { 5539 unsigned long timeout; 5540 5541 timeout = (timeout_secs * PQI_HZ) + jiffies; 5542 5543 while (atomic_read(&device->scsi_cmds_outstanding)) { 5544 pqi_check_ctrl_health(ctrl_info); 5545 if (pqi_ctrl_offline(ctrl_info)) 5546 return -ENXIO; 5547 if (timeout_secs != NO_TIMEOUT) { 5548 if (time_after(jiffies, timeout)) { 5549 dev_err(&ctrl_info->pci_dev->dev, 5550 "timed out waiting for pending IO\n"); 5551 return -ETIMEDOUT; 5552 } 5553 } 5554 usleep_range(1000, 2000); 5555 } 5556 5557 return 0; 5558 } 5559 5560 static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5561 unsigned long timeout_secs) 5562 { 5563 bool io_pending; 5564 unsigned long flags; 5565 unsigned long timeout; 5566 struct pqi_scsi_dev *device; 5567 5568 timeout = (timeout_secs * PQI_HZ) + jiffies; 5569 while (1) { 5570 io_pending = false; 5571 5572 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5573 list_for_each_entry(device, &ctrl_info->scsi_device_list, 5574 scsi_device_list_entry) { 5575 if (atomic_read(&device->scsi_cmds_outstanding)) { 5576 io_pending = true; 5577 break; 5578 } 5579 } 5580 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 5581 flags); 5582 5583 if (!io_pending) 5584 break; 5585 5586 pqi_check_ctrl_health(ctrl_info); 5587 if (pqi_ctrl_offline(ctrl_info)) 5588 return -ENXIO; 5589 5590 if (timeout_secs != NO_TIMEOUT) { 5591 if (time_after(jiffies, timeout)) { 5592 dev_err(&ctrl_info->pci_dev->dev, 5593 "timed out waiting for pending IO\n"); 5594 return -ETIMEDOUT; 5595 } 5596 } 5597 usleep_range(1000, 2000); 5598 } 5599 5600 return 0; 5601 } 5602 5603 static int pqi_ctrl_wait_for_pending_sync_cmds(struct pqi_ctrl_info *ctrl_info) 5604 { 5605 while (atomic_read(&ctrl_info->sync_cmds_outstanding)) { 5606 pqi_check_ctrl_health(ctrl_info); 5607 if (pqi_ctrl_offline(ctrl_info)) 5608 return -ENXIO; 5609 usleep_range(1000, 2000); 5610 } 5611 5612 return 0; 5613 } 5614 5615 static void pqi_lun_reset_complete(struct pqi_io_request *io_request, 5616 void *context) 5617 { 5618 struct completion *waiting = context; 5619 5620 complete(waiting); 5621 } 5622 5623 #define PQI_LUN_RESET_TIMEOUT_SECS 30 5624 #define PQI_LUN_RESET_POLL_COMPLETION_SECS 10 5625 5626 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info, 5627 struct pqi_scsi_dev *device, struct completion *wait) 5628 { 5629 int rc; 5630 5631 while (1) { 5632 if (wait_for_completion_io_timeout(wait, 5633 PQI_LUN_RESET_POLL_COMPLETION_SECS * PQI_HZ)) { 5634 rc = 0; 5635 break; 5636 } 5637 5638 pqi_check_ctrl_health(ctrl_info); 5639 if (pqi_ctrl_offline(ctrl_info)) { 5640 rc = -ENXIO; 5641 break; 5642 } 5643 } 5644 5645 return rc; 5646 } 5647 5648 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, 5649 struct pqi_scsi_dev *device) 5650 { 5651 int rc; 5652 struct pqi_io_request *io_request; 5653 DECLARE_COMPLETION_ONSTACK(wait); 5654 struct pqi_task_management_request *request; 5655 5656 io_request = pqi_alloc_io_request(ctrl_info); 5657 io_request->io_complete_callback = pqi_lun_reset_complete; 5658 io_request->context = &wait; 5659 5660 request = io_request->iu; 5661 memset(request, 0, sizeof(*request)); 5662 5663 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT; 5664 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH, 5665 &request->header.iu_length); 5666 put_unaligned_le16(io_request->index, &request->request_id); 5667 memcpy(request->lun_number, device->scsi3addr, 5668 sizeof(request->lun_number)); 5669 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET; 5670 if (ctrl_info->tmf_iu_timeout_supported) 5671 put_unaligned_le16(PQI_LUN_RESET_TIMEOUT_SECS, 5672 &request->timeout); 5673 5674 pqi_start_io(ctrl_info, 5675 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 5676 io_request); 5677 5678 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait); 5679 if (rc == 0) 5680 rc = io_request->status; 5681 5682 pqi_free_io_request(io_request); 5683 5684 return rc; 5685 } 5686 5687 /* Performs a reset at the LUN level. */ 5688 5689 #define PQI_LUN_RESET_RETRIES 3 5690 #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000 5691 #define PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS 120 5692 5693 static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5694 struct pqi_scsi_dev *device) 5695 { 5696 int rc; 5697 unsigned int retries; 5698 unsigned long timeout_secs; 5699 5700 for (retries = 0;;) { 5701 rc = pqi_lun_reset(ctrl_info, device); 5702 if (rc == 0 || ++retries > PQI_LUN_RESET_RETRIES) 5703 break; 5704 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS); 5705 } 5706 5707 timeout_secs = rc ? PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS : NO_TIMEOUT; 5708 5709 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs); 5710 5711 return rc == 0 ? SUCCESS : FAILED; 5712 } 5713 5714 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5715 struct pqi_scsi_dev *device) 5716 { 5717 int rc; 5718 5719 mutex_lock(&ctrl_info->lun_reset_mutex); 5720 5721 pqi_ctrl_block_requests(ctrl_info); 5722 pqi_ctrl_wait_until_quiesced(ctrl_info); 5723 pqi_fail_io_queued_for_device(ctrl_info, device); 5724 rc = pqi_wait_until_inbound_queues_empty(ctrl_info); 5725 pqi_device_reset_start(device); 5726 pqi_ctrl_unblock_requests(ctrl_info); 5727 5728 if (rc) 5729 rc = FAILED; 5730 else 5731 rc = _pqi_device_reset(ctrl_info, device); 5732 5733 pqi_device_reset_done(device); 5734 5735 mutex_unlock(&ctrl_info->lun_reset_mutex); 5736 5737 return rc; 5738 } 5739 5740 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd) 5741 { 5742 int rc; 5743 struct Scsi_Host *shost; 5744 struct pqi_ctrl_info *ctrl_info; 5745 struct pqi_scsi_dev *device; 5746 5747 shost = scmd->device->host; 5748 ctrl_info = shost_to_hba(shost); 5749 device = scmd->device->hostdata; 5750 5751 dev_err(&ctrl_info->pci_dev->dev, 5752 "resetting scsi %d:%d:%d:%d\n", 5753 shost->host_no, device->bus, device->target, device->lun); 5754 5755 pqi_check_ctrl_health(ctrl_info); 5756 if (pqi_ctrl_offline(ctrl_info) || 5757 pqi_device_reset_blocked(ctrl_info)) { 5758 rc = FAILED; 5759 goto out; 5760 } 5761 5762 pqi_wait_until_ofa_finished(ctrl_info); 5763 5764 atomic_inc(&ctrl_info->sync_cmds_outstanding); 5765 rc = pqi_device_reset(ctrl_info, device); 5766 atomic_dec(&ctrl_info->sync_cmds_outstanding); 5767 5768 out: 5769 dev_err(&ctrl_info->pci_dev->dev, 5770 "reset of scsi %d:%d:%d:%d: %s\n", 5771 shost->host_no, device->bus, device->target, device->lun, 5772 rc == SUCCESS ? "SUCCESS" : "FAILED"); 5773 5774 return rc; 5775 } 5776 5777 static int pqi_slave_alloc(struct scsi_device *sdev) 5778 { 5779 struct pqi_scsi_dev *device; 5780 unsigned long flags; 5781 struct pqi_ctrl_info *ctrl_info; 5782 struct scsi_target *starget; 5783 struct sas_rphy *rphy; 5784 5785 ctrl_info = shost_to_hba(sdev->host); 5786 5787 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5788 5789 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) { 5790 starget = scsi_target(sdev); 5791 rphy = target_to_rphy(starget); 5792 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy); 5793 if (device) { 5794 device->target = sdev_id(sdev); 5795 device->lun = sdev->lun; 5796 device->target_lun_valid = true; 5797 } 5798 } else { 5799 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev), 5800 sdev_id(sdev), sdev->lun); 5801 } 5802 5803 if (device) { 5804 sdev->hostdata = device; 5805 device->sdev = sdev; 5806 if (device->queue_depth) { 5807 device->advertised_queue_depth = device->queue_depth; 5808 scsi_change_queue_depth(sdev, 5809 device->advertised_queue_depth); 5810 } 5811 if (pqi_is_logical_device(device)) 5812 pqi_disable_write_same(sdev); 5813 else 5814 sdev->allow_restart = 1; 5815 } 5816 5817 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5818 5819 return 0; 5820 } 5821 5822 static int pqi_map_queues(struct Scsi_Host *shost) 5823 { 5824 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost); 5825 5826 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT], 5827 ctrl_info->pci_dev, 0); 5828 } 5829 5830 static int pqi_slave_configure(struct scsi_device *sdev) 5831 { 5832 struct pqi_scsi_dev *device; 5833 5834 device = sdev->hostdata; 5835 device->devtype = sdev->type; 5836 5837 return 0; 5838 } 5839 5840 static void pqi_slave_destroy(struct scsi_device *sdev) 5841 { 5842 unsigned long flags; 5843 struct pqi_scsi_dev *device; 5844 struct pqi_ctrl_info *ctrl_info; 5845 5846 ctrl_info = shost_to_hba(sdev->host); 5847 5848 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5849 5850 device = sdev->hostdata; 5851 if (device) { 5852 sdev->hostdata = NULL; 5853 if (!list_empty(&device->scsi_device_list_entry)) 5854 list_del(&device->scsi_device_list_entry); 5855 } 5856 5857 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5858 5859 if (device) { 5860 pqi_dev_info(ctrl_info, "removed", device); 5861 pqi_free_device(device); 5862 } 5863 } 5864 5865 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg) 5866 { 5867 struct pci_dev *pci_dev; 5868 u32 subsystem_vendor; 5869 u32 subsystem_device; 5870 cciss_pci_info_struct pciinfo; 5871 5872 if (!arg) 5873 return -EINVAL; 5874 5875 pci_dev = ctrl_info->pci_dev; 5876 5877 pciinfo.domain = pci_domain_nr(pci_dev->bus); 5878 pciinfo.bus = pci_dev->bus->number; 5879 pciinfo.dev_fn = pci_dev->devfn; 5880 subsystem_vendor = pci_dev->subsystem_vendor; 5881 subsystem_device = pci_dev->subsystem_device; 5882 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | subsystem_vendor; 5883 5884 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo))) 5885 return -EFAULT; 5886 5887 return 0; 5888 } 5889 5890 static int pqi_getdrivver_ioctl(void __user *arg) 5891 { 5892 u32 version; 5893 5894 if (!arg) 5895 return -EINVAL; 5896 5897 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) | 5898 (DRIVER_RELEASE << 16) | DRIVER_REVISION; 5899 5900 if (copy_to_user(arg, &version, sizeof(version))) 5901 return -EFAULT; 5902 5903 return 0; 5904 } 5905 5906 struct ciss_error_info { 5907 u8 scsi_status; 5908 int command_status; 5909 size_t sense_data_length; 5910 }; 5911 5912 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info, 5913 struct ciss_error_info *ciss_error_info) 5914 { 5915 int ciss_cmd_status; 5916 size_t sense_data_length; 5917 5918 switch (pqi_error_info->data_out_result) { 5919 case PQI_DATA_IN_OUT_GOOD: 5920 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS; 5921 break; 5922 case PQI_DATA_IN_OUT_UNDERFLOW: 5923 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN; 5924 break; 5925 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 5926 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN; 5927 break; 5928 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 5929 case PQI_DATA_IN_OUT_BUFFER_ERROR: 5930 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 5931 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 5932 case PQI_DATA_IN_OUT_ERROR: 5933 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR; 5934 break; 5935 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 5936 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 5937 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 5938 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 5939 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 5940 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 5941 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 5942 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 5943 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 5944 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 5945 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR; 5946 break; 5947 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 5948 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT; 5949 break; 5950 case PQI_DATA_IN_OUT_ABORTED: 5951 ciss_cmd_status = CISS_CMD_STATUS_ABORTED; 5952 break; 5953 case PQI_DATA_IN_OUT_TIMEOUT: 5954 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT; 5955 break; 5956 default: 5957 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS; 5958 break; 5959 } 5960 5961 sense_data_length = 5962 get_unaligned_le16(&pqi_error_info->sense_data_length); 5963 if (sense_data_length == 0) 5964 sense_data_length = 5965 get_unaligned_le16(&pqi_error_info->response_data_length); 5966 if (sense_data_length) 5967 if (sense_data_length > sizeof(pqi_error_info->data)) 5968 sense_data_length = sizeof(pqi_error_info->data); 5969 5970 ciss_error_info->scsi_status = pqi_error_info->status; 5971 ciss_error_info->command_status = ciss_cmd_status; 5972 ciss_error_info->sense_data_length = sense_data_length; 5973 } 5974 5975 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg) 5976 { 5977 int rc; 5978 char *kernel_buffer = NULL; 5979 u16 iu_length; 5980 size_t sense_data_length; 5981 IOCTL_Command_struct iocommand; 5982 struct pqi_raid_path_request request; 5983 struct pqi_raid_error_info pqi_error_info; 5984 struct ciss_error_info ciss_error_info; 5985 5986 if (pqi_ctrl_offline(ctrl_info)) 5987 return -ENXIO; 5988 if (!arg) 5989 return -EINVAL; 5990 if (!capable(CAP_SYS_RAWIO)) 5991 return -EPERM; 5992 if (copy_from_user(&iocommand, arg, sizeof(iocommand))) 5993 return -EFAULT; 5994 if (iocommand.buf_size < 1 && 5995 iocommand.Request.Type.Direction != XFER_NONE) 5996 return -EINVAL; 5997 if (iocommand.Request.CDBLen > sizeof(request.cdb)) 5998 return -EINVAL; 5999 if (iocommand.Request.Type.Type != TYPE_CMD) 6000 return -EINVAL; 6001 6002 switch (iocommand.Request.Type.Direction) { 6003 case XFER_NONE: 6004 case XFER_WRITE: 6005 case XFER_READ: 6006 case XFER_READ | XFER_WRITE: 6007 break; 6008 default: 6009 return -EINVAL; 6010 } 6011 6012 if (iocommand.buf_size > 0) { 6013 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL); 6014 if (!kernel_buffer) 6015 return -ENOMEM; 6016 if (iocommand.Request.Type.Direction & XFER_WRITE) { 6017 if (copy_from_user(kernel_buffer, iocommand.buf, 6018 iocommand.buf_size)) { 6019 rc = -EFAULT; 6020 goto out; 6021 } 6022 } else { 6023 memset(kernel_buffer, 0, iocommand.buf_size); 6024 } 6025 } 6026 6027 memset(&request, 0, sizeof(request)); 6028 6029 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 6030 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 6031 PQI_REQUEST_HEADER_LENGTH; 6032 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes, 6033 sizeof(request.lun_number)); 6034 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen); 6035 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 6036 6037 switch (iocommand.Request.Type.Direction) { 6038 case XFER_NONE: 6039 request.data_direction = SOP_NO_DIRECTION_FLAG; 6040 break; 6041 case XFER_WRITE: 6042 request.data_direction = SOP_WRITE_FLAG; 6043 break; 6044 case XFER_READ: 6045 request.data_direction = SOP_READ_FLAG; 6046 break; 6047 case XFER_READ | XFER_WRITE: 6048 request.data_direction = SOP_BIDIRECTIONAL; 6049 break; 6050 } 6051 6052 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 6053 6054 if (iocommand.buf_size > 0) { 6055 put_unaligned_le32(iocommand.buf_size, &request.buffer_length); 6056 6057 rc = pqi_map_single(ctrl_info->pci_dev, 6058 &request.sg_descriptors[0], kernel_buffer, 6059 iocommand.buf_size, DMA_BIDIRECTIONAL); 6060 if (rc) 6061 goto out; 6062 6063 iu_length += sizeof(request.sg_descriptors[0]); 6064 } 6065 6066 put_unaligned_le16(iu_length, &request.header.iu_length); 6067 6068 if (ctrl_info->raid_iu_timeout_supported) 6069 put_unaligned_le32(iocommand.Request.Timeout, &request.timeout); 6070 6071 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 6072 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT); 6073 6074 if (iocommand.buf_size > 0) 6075 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 6076 DMA_BIDIRECTIONAL); 6077 6078 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info)); 6079 6080 if (rc == 0) { 6081 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info); 6082 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status; 6083 iocommand.error_info.CommandStatus = 6084 ciss_error_info.command_status; 6085 sense_data_length = ciss_error_info.sense_data_length; 6086 if (sense_data_length) { 6087 if (sense_data_length > 6088 sizeof(iocommand.error_info.SenseInfo)) 6089 sense_data_length = 6090 sizeof(iocommand.error_info.SenseInfo); 6091 memcpy(iocommand.error_info.SenseInfo, 6092 pqi_error_info.data, sense_data_length); 6093 iocommand.error_info.SenseLen = sense_data_length; 6094 } 6095 } 6096 6097 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) { 6098 rc = -EFAULT; 6099 goto out; 6100 } 6101 6102 if (rc == 0 && iocommand.buf_size > 0 && 6103 (iocommand.Request.Type.Direction & XFER_READ)) { 6104 if (copy_to_user(iocommand.buf, kernel_buffer, 6105 iocommand.buf_size)) { 6106 rc = -EFAULT; 6107 } 6108 } 6109 6110 out: 6111 kfree(kernel_buffer); 6112 6113 return rc; 6114 } 6115 6116 static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd, 6117 void __user *arg) 6118 { 6119 int rc; 6120 struct pqi_ctrl_info *ctrl_info; 6121 6122 ctrl_info = shost_to_hba(sdev->host); 6123 6124 if (pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) 6125 return -EBUSY; 6126 6127 switch (cmd) { 6128 case CCISS_DEREGDISK: 6129 case CCISS_REGNEWDISK: 6130 case CCISS_REGNEWD: 6131 rc = pqi_scan_scsi_devices(ctrl_info); 6132 break; 6133 case CCISS_GETPCIINFO: 6134 rc = pqi_getpciinfo_ioctl(ctrl_info, arg); 6135 break; 6136 case CCISS_GETDRIVVER: 6137 rc = pqi_getdrivver_ioctl(arg); 6138 break; 6139 case CCISS_PASSTHRU: 6140 rc = pqi_passthru_ioctl(ctrl_info, arg); 6141 break; 6142 default: 6143 rc = -EINVAL; 6144 break; 6145 } 6146 6147 return rc; 6148 } 6149 6150 static ssize_t pqi_firmware_version_show(struct device *dev, 6151 struct device_attribute *attr, char *buffer) 6152 { 6153 struct Scsi_Host *shost; 6154 struct pqi_ctrl_info *ctrl_info; 6155 6156 shost = class_to_shost(dev); 6157 ctrl_info = shost_to_hba(shost); 6158 6159 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version); 6160 } 6161 6162 static ssize_t pqi_driver_version_show(struct device *dev, 6163 struct device_attribute *attr, char *buffer) 6164 { 6165 return snprintf(buffer, PAGE_SIZE, "%s\n", 6166 DRIVER_VERSION BUILD_TIMESTAMP); 6167 } 6168 6169 static ssize_t pqi_serial_number_show(struct device *dev, 6170 struct device_attribute *attr, char *buffer) 6171 { 6172 struct Scsi_Host *shost; 6173 struct pqi_ctrl_info *ctrl_info; 6174 6175 shost = class_to_shost(dev); 6176 ctrl_info = shost_to_hba(shost); 6177 6178 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number); 6179 } 6180 6181 static ssize_t pqi_model_show(struct device *dev, 6182 struct device_attribute *attr, char *buffer) 6183 { 6184 struct Scsi_Host *shost; 6185 struct pqi_ctrl_info *ctrl_info; 6186 6187 shost = class_to_shost(dev); 6188 ctrl_info = shost_to_hba(shost); 6189 6190 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model); 6191 } 6192 6193 static ssize_t pqi_vendor_show(struct device *dev, 6194 struct device_attribute *attr, char *buffer) 6195 { 6196 struct Scsi_Host *shost; 6197 struct pqi_ctrl_info *ctrl_info; 6198 6199 shost = class_to_shost(dev); 6200 ctrl_info = shost_to_hba(shost); 6201 6202 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor); 6203 } 6204 6205 static ssize_t pqi_host_rescan_store(struct device *dev, 6206 struct device_attribute *attr, const char *buffer, size_t count) 6207 { 6208 struct Scsi_Host *shost = class_to_shost(dev); 6209 6210 pqi_scan_start(shost); 6211 6212 return count; 6213 } 6214 6215 static ssize_t pqi_lockup_action_show(struct device *dev, 6216 struct device_attribute *attr, char *buffer) 6217 { 6218 int count = 0; 6219 unsigned int i; 6220 6221 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6222 if (pqi_lockup_actions[i].action == pqi_lockup_action) 6223 count += scnprintf(buffer + count, PAGE_SIZE - count, 6224 "[%s] ", pqi_lockup_actions[i].name); 6225 else 6226 count += scnprintf(buffer + count, PAGE_SIZE - count, 6227 "%s ", pqi_lockup_actions[i].name); 6228 } 6229 6230 count += scnprintf(buffer + count, PAGE_SIZE - count, "\n"); 6231 6232 return count; 6233 } 6234 6235 static ssize_t pqi_lockup_action_store(struct device *dev, 6236 struct device_attribute *attr, const char *buffer, size_t count) 6237 { 6238 unsigned int i; 6239 char *action_name; 6240 char action_name_buffer[32]; 6241 6242 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer)); 6243 action_name = strstrip(action_name_buffer); 6244 6245 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6246 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) { 6247 pqi_lockup_action = pqi_lockup_actions[i].action; 6248 return count; 6249 } 6250 } 6251 6252 return -EINVAL; 6253 } 6254 6255 static DEVICE_ATTR(driver_version, 0444, pqi_driver_version_show, NULL); 6256 static DEVICE_ATTR(firmware_version, 0444, pqi_firmware_version_show, NULL); 6257 static DEVICE_ATTR(model, 0444, pqi_model_show, NULL); 6258 static DEVICE_ATTR(serial_number, 0444, pqi_serial_number_show, NULL); 6259 static DEVICE_ATTR(vendor, 0444, pqi_vendor_show, NULL); 6260 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store); 6261 static DEVICE_ATTR(lockup_action, 0644, 6262 pqi_lockup_action_show, pqi_lockup_action_store); 6263 6264 static struct device_attribute *pqi_shost_attrs[] = { 6265 &dev_attr_driver_version, 6266 &dev_attr_firmware_version, 6267 &dev_attr_model, 6268 &dev_attr_serial_number, 6269 &dev_attr_vendor, 6270 &dev_attr_rescan, 6271 &dev_attr_lockup_action, 6272 NULL 6273 }; 6274 6275 static ssize_t pqi_unique_id_show(struct device *dev, 6276 struct device_attribute *attr, char *buffer) 6277 { 6278 struct pqi_ctrl_info *ctrl_info; 6279 struct scsi_device *sdev; 6280 struct pqi_scsi_dev *device; 6281 unsigned long flags; 6282 u8 unique_id[16]; 6283 6284 sdev = to_scsi_device(dev); 6285 ctrl_info = shost_to_hba(sdev->host); 6286 6287 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6288 6289 device = sdev->hostdata; 6290 if (!device) { 6291 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6292 return -ENODEV; 6293 } 6294 6295 if (device->is_physical_device) { 6296 memset(unique_id, 0, 8); 6297 memcpy(unique_id + 8, &device->wwid, sizeof(device->wwid)); 6298 } else { 6299 memcpy(unique_id, device->volume_id, sizeof(device->volume_id)); 6300 } 6301 6302 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6303 6304 return snprintf(buffer, PAGE_SIZE, 6305 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n", 6306 unique_id[0], unique_id[1], unique_id[2], unique_id[3], 6307 unique_id[4], unique_id[5], unique_id[6], unique_id[7], 6308 unique_id[8], unique_id[9], unique_id[10], unique_id[11], 6309 unique_id[12], unique_id[13], unique_id[14], unique_id[15]); 6310 } 6311 6312 static ssize_t pqi_lunid_show(struct device *dev, 6313 struct device_attribute *attr, char *buffer) 6314 { 6315 struct pqi_ctrl_info *ctrl_info; 6316 struct scsi_device *sdev; 6317 struct pqi_scsi_dev *device; 6318 unsigned long flags; 6319 u8 lunid[8]; 6320 6321 sdev = to_scsi_device(dev); 6322 ctrl_info = shost_to_hba(sdev->host); 6323 6324 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6325 6326 device = sdev->hostdata; 6327 if (!device) { 6328 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6329 return -ENODEV; 6330 } 6331 6332 memcpy(lunid, device->scsi3addr, sizeof(lunid)); 6333 6334 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6335 6336 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid); 6337 } 6338 6339 #define MAX_PATHS 8 6340 6341 static ssize_t pqi_path_info_show(struct device *dev, 6342 struct device_attribute *attr, char *buf) 6343 { 6344 struct pqi_ctrl_info *ctrl_info; 6345 struct scsi_device *sdev; 6346 struct pqi_scsi_dev *device; 6347 unsigned long flags; 6348 int i; 6349 int output_len = 0; 6350 u8 box; 6351 u8 bay; 6352 u8 path_map_index; 6353 char *active; 6354 u8 phys_connector[2]; 6355 6356 sdev = to_scsi_device(dev); 6357 ctrl_info = shost_to_hba(sdev->host); 6358 6359 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6360 6361 device = sdev->hostdata; 6362 if (!device) { 6363 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6364 return -ENODEV; 6365 } 6366 6367 bay = device->bay; 6368 for (i = 0; i < MAX_PATHS; i++) { 6369 path_map_index = 1 << i; 6370 if (i == device->active_path_index) 6371 active = "Active"; 6372 else if (device->path_map & path_map_index) 6373 active = "Inactive"; 6374 else 6375 continue; 6376 6377 output_len += scnprintf(buf + output_len, 6378 PAGE_SIZE - output_len, 6379 "[%d:%d:%d:%d] %20.20s ", 6380 ctrl_info->scsi_host->host_no, 6381 device->bus, device->target, 6382 device->lun, 6383 scsi_device_type(device->devtype)); 6384 6385 if (device->devtype == TYPE_RAID || 6386 pqi_is_logical_device(device)) 6387 goto end_buffer; 6388 6389 memcpy(&phys_connector, &device->phys_connector[i], 6390 sizeof(phys_connector)); 6391 if (phys_connector[0] < '0') 6392 phys_connector[0] = '0'; 6393 if (phys_connector[1] < '0') 6394 phys_connector[1] = '0'; 6395 6396 output_len += scnprintf(buf + output_len, 6397 PAGE_SIZE - output_len, 6398 "PORT: %.2s ", phys_connector); 6399 6400 box = device->box[i]; 6401 if (box != 0 && box != 0xFF) 6402 output_len += scnprintf(buf + output_len, 6403 PAGE_SIZE - output_len, 6404 "BOX: %hhu ", box); 6405 6406 if ((device->devtype == TYPE_DISK || 6407 device->devtype == TYPE_ZBC) && 6408 pqi_expose_device(device)) 6409 output_len += scnprintf(buf + output_len, 6410 PAGE_SIZE - output_len, 6411 "BAY: %hhu ", bay); 6412 6413 end_buffer: 6414 output_len += scnprintf(buf + output_len, 6415 PAGE_SIZE - output_len, 6416 "%s\n", active); 6417 } 6418 6419 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6420 6421 return output_len; 6422 } 6423 6424 static ssize_t pqi_sas_address_show(struct device *dev, 6425 struct device_attribute *attr, char *buffer) 6426 { 6427 struct pqi_ctrl_info *ctrl_info; 6428 struct scsi_device *sdev; 6429 struct pqi_scsi_dev *device; 6430 unsigned long flags; 6431 u64 sas_address; 6432 6433 sdev = to_scsi_device(dev); 6434 ctrl_info = shost_to_hba(sdev->host); 6435 6436 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6437 6438 device = sdev->hostdata; 6439 if (!device || !pqi_is_device_with_sas_address(device)) { 6440 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6441 return -ENODEV; 6442 } 6443 6444 sas_address = device->sas_address; 6445 6446 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6447 6448 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address); 6449 } 6450 6451 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev, 6452 struct device_attribute *attr, char *buffer) 6453 { 6454 struct pqi_ctrl_info *ctrl_info; 6455 struct scsi_device *sdev; 6456 struct pqi_scsi_dev *device; 6457 unsigned long flags; 6458 6459 sdev = to_scsi_device(dev); 6460 ctrl_info = shost_to_hba(sdev->host); 6461 6462 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6463 6464 device = sdev->hostdata; 6465 if (!device) { 6466 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6467 return -ENODEV; 6468 } 6469 6470 buffer[0] = device->raid_bypass_enabled ? '1' : '0'; 6471 buffer[1] = '\n'; 6472 buffer[2] = '\0'; 6473 6474 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6475 6476 return 2; 6477 } 6478 6479 static ssize_t pqi_raid_level_show(struct device *dev, 6480 struct device_attribute *attr, char *buffer) 6481 { 6482 struct pqi_ctrl_info *ctrl_info; 6483 struct scsi_device *sdev; 6484 struct pqi_scsi_dev *device; 6485 unsigned long flags; 6486 char *raid_level; 6487 6488 sdev = to_scsi_device(dev); 6489 ctrl_info = shost_to_hba(sdev->host); 6490 6491 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6492 6493 device = sdev->hostdata; 6494 if (!device) { 6495 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6496 return -ENODEV; 6497 } 6498 6499 if (pqi_is_logical_device(device)) 6500 raid_level = pqi_raid_level_to_string(device->raid_level); 6501 else 6502 raid_level = "N/A"; 6503 6504 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6505 6506 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level); 6507 } 6508 6509 static ssize_t pqi_raid_bypass_cnt_show(struct device *dev, 6510 struct device_attribute *attr, char *buffer) 6511 { 6512 struct pqi_ctrl_info *ctrl_info; 6513 struct scsi_device *sdev; 6514 struct pqi_scsi_dev *device; 6515 unsigned long flags; 6516 int raid_bypass_cnt; 6517 6518 sdev = to_scsi_device(dev); 6519 ctrl_info = shost_to_hba(sdev->host); 6520 6521 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6522 6523 device = sdev->hostdata; 6524 if (!device) { 6525 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6526 return -ENODEV; 6527 } 6528 6529 raid_bypass_cnt = atomic_read(&device->raid_bypass_cnt); 6530 6531 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6532 6533 return snprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt); 6534 } 6535 6536 static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL); 6537 static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL); 6538 static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL); 6539 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL); 6540 static DEVICE_ATTR(ssd_smart_path_enabled, 0444, pqi_ssd_smart_path_enabled_show, NULL); 6541 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL); 6542 static DEVICE_ATTR(raid_bypass_cnt, 0444, pqi_raid_bypass_cnt_show, NULL); 6543 6544 static struct device_attribute *pqi_sdev_attrs[] = { 6545 &dev_attr_lunid, 6546 &dev_attr_unique_id, 6547 &dev_attr_path_info, 6548 &dev_attr_sas_address, 6549 &dev_attr_ssd_smart_path_enabled, 6550 &dev_attr_raid_level, 6551 &dev_attr_raid_bypass_cnt, 6552 NULL 6553 }; 6554 6555 static struct scsi_host_template pqi_driver_template = { 6556 .module = THIS_MODULE, 6557 .name = DRIVER_NAME_SHORT, 6558 .proc_name = DRIVER_NAME_SHORT, 6559 .queuecommand = pqi_scsi_queue_command, 6560 .scan_start = pqi_scan_start, 6561 .scan_finished = pqi_scan_finished, 6562 .this_id = -1, 6563 .eh_device_reset_handler = pqi_eh_device_reset_handler, 6564 .ioctl = pqi_ioctl, 6565 .slave_alloc = pqi_slave_alloc, 6566 .slave_configure = pqi_slave_configure, 6567 .slave_destroy = pqi_slave_destroy, 6568 .map_queues = pqi_map_queues, 6569 .sdev_attrs = pqi_sdev_attrs, 6570 .shost_attrs = pqi_shost_attrs, 6571 }; 6572 6573 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info) 6574 { 6575 int rc; 6576 struct Scsi_Host *shost; 6577 6578 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info)); 6579 if (!shost) { 6580 dev_err(&ctrl_info->pci_dev->dev, 6581 "scsi_host_alloc failed for controller %u\n", 6582 ctrl_info->ctrl_id); 6583 return -ENOMEM; 6584 } 6585 6586 shost->io_port = 0; 6587 shost->n_io_port = 0; 6588 shost->this_id = -1; 6589 shost->max_channel = PQI_MAX_BUS; 6590 shost->max_cmd_len = MAX_COMMAND_SIZE; 6591 shost->max_lun = ~0; 6592 shost->max_id = ~0; 6593 shost->max_sectors = ctrl_info->max_sectors; 6594 shost->can_queue = ctrl_info->scsi_ml_can_queue; 6595 shost->cmd_per_lun = shost->can_queue; 6596 shost->sg_tablesize = ctrl_info->sg_tablesize; 6597 shost->transportt = pqi_sas_transport_template; 6598 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0); 6599 shost->unique_id = shost->irq; 6600 shost->nr_hw_queues = ctrl_info->num_queue_groups; 6601 shost->hostdata[0] = (unsigned long)ctrl_info; 6602 6603 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev); 6604 if (rc) { 6605 dev_err(&ctrl_info->pci_dev->dev, 6606 "scsi_add_host failed for controller %u\n", 6607 ctrl_info->ctrl_id); 6608 goto free_host; 6609 } 6610 6611 rc = pqi_add_sas_host(shost, ctrl_info); 6612 if (rc) { 6613 dev_err(&ctrl_info->pci_dev->dev, 6614 "add SAS host failed for controller %u\n", 6615 ctrl_info->ctrl_id); 6616 goto remove_host; 6617 } 6618 6619 ctrl_info->scsi_host = shost; 6620 6621 return 0; 6622 6623 remove_host: 6624 scsi_remove_host(shost); 6625 free_host: 6626 scsi_host_put(shost); 6627 6628 return rc; 6629 } 6630 6631 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info) 6632 { 6633 struct Scsi_Host *shost; 6634 6635 pqi_delete_sas_host(ctrl_info); 6636 6637 shost = ctrl_info->scsi_host; 6638 if (!shost) 6639 return; 6640 6641 scsi_remove_host(shost); 6642 scsi_host_put(shost); 6643 } 6644 6645 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info) 6646 { 6647 int rc = 0; 6648 struct pqi_device_registers __iomem *pqi_registers; 6649 unsigned long timeout; 6650 unsigned int timeout_msecs; 6651 union pqi_reset_register reset_reg; 6652 6653 pqi_registers = ctrl_info->pqi_registers; 6654 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100; 6655 timeout = msecs_to_jiffies(timeout_msecs) + jiffies; 6656 6657 while (1) { 6658 msleep(PQI_RESET_POLL_INTERVAL_MSECS); 6659 reset_reg.all_bits = readl(&pqi_registers->device_reset); 6660 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED) 6661 break; 6662 pqi_check_ctrl_health(ctrl_info); 6663 if (pqi_ctrl_offline(ctrl_info)) { 6664 rc = -ENXIO; 6665 break; 6666 } 6667 if (time_after(jiffies, timeout)) { 6668 rc = -ETIMEDOUT; 6669 break; 6670 } 6671 } 6672 6673 return rc; 6674 } 6675 6676 static int pqi_reset(struct pqi_ctrl_info *ctrl_info) 6677 { 6678 int rc; 6679 union pqi_reset_register reset_reg; 6680 6681 if (ctrl_info->pqi_reset_quiesce_supported) { 6682 rc = sis_pqi_reset_quiesce(ctrl_info); 6683 if (rc) { 6684 dev_err(&ctrl_info->pci_dev->dev, 6685 "PQI reset failed during quiesce with error %d\n", 6686 rc); 6687 return rc; 6688 } 6689 } 6690 6691 reset_reg.all_bits = 0; 6692 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET; 6693 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET; 6694 6695 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset); 6696 6697 rc = pqi_wait_for_pqi_reset_completion(ctrl_info); 6698 if (rc) 6699 dev_err(&ctrl_info->pci_dev->dev, 6700 "PQI reset failed with error %d\n", rc); 6701 6702 return rc; 6703 } 6704 6705 static int pqi_get_ctrl_serial_number(struct pqi_ctrl_info *ctrl_info) 6706 { 6707 int rc; 6708 struct bmic_sense_subsystem_info *sense_info; 6709 6710 sense_info = kzalloc(sizeof(*sense_info), GFP_KERNEL); 6711 if (!sense_info) 6712 return -ENOMEM; 6713 6714 rc = pqi_sense_subsystem_info(ctrl_info, sense_info); 6715 if (rc) 6716 goto out; 6717 6718 memcpy(ctrl_info->serial_number, sense_info->ctrl_serial_number, 6719 sizeof(sense_info->ctrl_serial_number)); 6720 ctrl_info->serial_number[sizeof(sense_info->ctrl_serial_number)] = '\0'; 6721 6722 out: 6723 kfree(sense_info); 6724 6725 return rc; 6726 } 6727 6728 static int pqi_get_ctrl_product_details(struct pqi_ctrl_info *ctrl_info) 6729 { 6730 int rc; 6731 struct bmic_identify_controller *identify; 6732 6733 identify = kmalloc(sizeof(*identify), GFP_KERNEL); 6734 if (!identify) 6735 return -ENOMEM; 6736 6737 rc = pqi_identify_controller(ctrl_info, identify); 6738 if (rc) 6739 goto out; 6740 6741 memcpy(ctrl_info->firmware_version, identify->firmware_version, 6742 sizeof(identify->firmware_version)); 6743 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0'; 6744 snprintf(ctrl_info->firmware_version + 6745 strlen(ctrl_info->firmware_version), 6746 sizeof(ctrl_info->firmware_version), 6747 "-%u", get_unaligned_le16(&identify->firmware_build_number)); 6748 6749 memcpy(ctrl_info->model, identify->product_id, 6750 sizeof(identify->product_id)); 6751 ctrl_info->model[sizeof(identify->product_id)] = '\0'; 6752 6753 memcpy(ctrl_info->vendor, identify->vendor_id, 6754 sizeof(identify->vendor_id)); 6755 ctrl_info->vendor[sizeof(identify->vendor_id)] = '\0'; 6756 6757 out: 6758 kfree(identify); 6759 6760 return rc; 6761 } 6762 6763 struct pqi_config_table_section_info { 6764 struct pqi_ctrl_info *ctrl_info; 6765 void *section; 6766 u32 section_offset; 6767 void __iomem *section_iomem_addr; 6768 }; 6769 6770 static inline bool pqi_is_firmware_feature_supported( 6771 struct pqi_config_table_firmware_features *firmware_features, 6772 unsigned int bit_position) 6773 { 6774 unsigned int byte_index; 6775 6776 byte_index = bit_position / BITS_PER_BYTE; 6777 6778 if (byte_index >= le16_to_cpu(firmware_features->num_elements)) 6779 return false; 6780 6781 return firmware_features->features_supported[byte_index] & 6782 (1 << (bit_position % BITS_PER_BYTE)) ? true : false; 6783 } 6784 6785 static inline bool pqi_is_firmware_feature_enabled( 6786 struct pqi_config_table_firmware_features *firmware_features, 6787 void __iomem *firmware_features_iomem_addr, 6788 unsigned int bit_position) 6789 { 6790 unsigned int byte_index; 6791 u8 __iomem *features_enabled_iomem_addr; 6792 6793 byte_index = (bit_position / BITS_PER_BYTE) + 6794 (le16_to_cpu(firmware_features->num_elements) * 2); 6795 6796 features_enabled_iomem_addr = firmware_features_iomem_addr + 6797 offsetof(struct pqi_config_table_firmware_features, 6798 features_supported) + byte_index; 6799 6800 return *((__force u8 *)features_enabled_iomem_addr) & 6801 (1 << (bit_position % BITS_PER_BYTE)) ? true : false; 6802 } 6803 6804 static inline void pqi_request_firmware_feature( 6805 struct pqi_config_table_firmware_features *firmware_features, 6806 unsigned int bit_position) 6807 { 6808 unsigned int byte_index; 6809 6810 byte_index = (bit_position / BITS_PER_BYTE) + 6811 le16_to_cpu(firmware_features->num_elements); 6812 6813 firmware_features->features_supported[byte_index] |= 6814 (1 << (bit_position % BITS_PER_BYTE)); 6815 } 6816 6817 static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info, 6818 u16 first_section, u16 last_section) 6819 { 6820 struct pqi_vendor_general_request request; 6821 6822 memset(&request, 0, sizeof(request)); 6823 6824 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; 6825 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 6826 &request.header.iu_length); 6827 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE, 6828 &request.function_code); 6829 put_unaligned_le16(first_section, 6830 &request.data.config_table_update.first_section); 6831 put_unaligned_le16(last_section, 6832 &request.data.config_table_update.last_section); 6833 6834 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 6835 0, NULL, NO_TIMEOUT); 6836 } 6837 6838 static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info, 6839 struct pqi_config_table_firmware_features *firmware_features, 6840 void __iomem *firmware_features_iomem_addr) 6841 { 6842 void *features_requested; 6843 void __iomem *features_requested_iomem_addr; 6844 6845 features_requested = firmware_features->features_supported + 6846 le16_to_cpu(firmware_features->num_elements); 6847 6848 features_requested_iomem_addr = firmware_features_iomem_addr + 6849 (features_requested - (void *)firmware_features); 6850 6851 memcpy_toio(features_requested_iomem_addr, features_requested, 6852 le16_to_cpu(firmware_features->num_elements)); 6853 6854 return pqi_config_table_update(ctrl_info, 6855 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES, 6856 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES); 6857 } 6858 6859 struct pqi_firmware_feature { 6860 char *feature_name; 6861 unsigned int feature_bit; 6862 bool supported; 6863 bool enabled; 6864 void (*feature_status)(struct pqi_ctrl_info *ctrl_info, 6865 struct pqi_firmware_feature *firmware_feature); 6866 }; 6867 6868 static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info, 6869 struct pqi_firmware_feature *firmware_feature) 6870 { 6871 if (!firmware_feature->supported) { 6872 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n", 6873 firmware_feature->feature_name); 6874 return; 6875 } 6876 6877 if (firmware_feature->enabled) { 6878 dev_info(&ctrl_info->pci_dev->dev, 6879 "%s enabled\n", firmware_feature->feature_name); 6880 return; 6881 } 6882 6883 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n", 6884 firmware_feature->feature_name); 6885 } 6886 6887 static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info, 6888 struct pqi_firmware_feature *firmware_feature) 6889 { 6890 switch (firmware_feature->feature_bit) { 6891 case PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE: 6892 ctrl_info->soft_reset_handshake_supported = 6893 firmware_feature->enabled; 6894 break; 6895 case PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT: 6896 ctrl_info->raid_iu_timeout_supported = 6897 firmware_feature->enabled; 6898 break; 6899 case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT: 6900 ctrl_info->tmf_iu_timeout_supported = 6901 firmware_feature->enabled; 6902 break; 6903 } 6904 6905 pqi_firmware_feature_status(ctrl_info, firmware_feature); 6906 } 6907 6908 static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info, 6909 struct pqi_firmware_feature *firmware_feature) 6910 { 6911 if (firmware_feature->feature_status) 6912 firmware_feature->feature_status(ctrl_info, firmware_feature); 6913 } 6914 6915 static DEFINE_MUTEX(pqi_firmware_features_mutex); 6916 6917 static struct pqi_firmware_feature pqi_firmware_features[] = { 6918 { 6919 .feature_name = "Online Firmware Activation", 6920 .feature_bit = PQI_FIRMWARE_FEATURE_OFA, 6921 .feature_status = pqi_firmware_feature_status, 6922 }, 6923 { 6924 .feature_name = "Serial Management Protocol", 6925 .feature_bit = PQI_FIRMWARE_FEATURE_SMP, 6926 .feature_status = pqi_firmware_feature_status, 6927 }, 6928 { 6929 .feature_name = "New Soft Reset Handshake", 6930 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE, 6931 .feature_status = pqi_ctrl_update_feature_flags, 6932 }, 6933 { 6934 .feature_name = "RAID IU Timeout", 6935 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT, 6936 .feature_status = pqi_ctrl_update_feature_flags, 6937 }, 6938 { 6939 .feature_name = "TMF IU Timeout", 6940 .feature_bit = PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT, 6941 .feature_status = pqi_ctrl_update_feature_flags, 6942 }, 6943 }; 6944 6945 static void pqi_process_firmware_features( 6946 struct pqi_config_table_section_info *section_info) 6947 { 6948 int rc; 6949 struct pqi_ctrl_info *ctrl_info; 6950 struct pqi_config_table_firmware_features *firmware_features; 6951 void __iomem *firmware_features_iomem_addr; 6952 unsigned int i; 6953 unsigned int num_features_supported; 6954 6955 ctrl_info = section_info->ctrl_info; 6956 firmware_features = section_info->section; 6957 firmware_features_iomem_addr = section_info->section_iomem_addr; 6958 6959 for (i = 0, num_features_supported = 0; 6960 i < ARRAY_SIZE(pqi_firmware_features); i++) { 6961 if (pqi_is_firmware_feature_supported(firmware_features, 6962 pqi_firmware_features[i].feature_bit)) { 6963 pqi_firmware_features[i].supported = true; 6964 num_features_supported++; 6965 } else { 6966 pqi_firmware_feature_update(ctrl_info, 6967 &pqi_firmware_features[i]); 6968 } 6969 } 6970 6971 if (num_features_supported == 0) 6972 return; 6973 6974 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6975 if (!pqi_firmware_features[i].supported) 6976 continue; 6977 pqi_request_firmware_feature(firmware_features, 6978 pqi_firmware_features[i].feature_bit); 6979 } 6980 6981 rc = pqi_enable_firmware_features(ctrl_info, firmware_features, 6982 firmware_features_iomem_addr); 6983 if (rc) { 6984 dev_err(&ctrl_info->pci_dev->dev, 6985 "failed to enable firmware features in PQI configuration table\n"); 6986 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6987 if (!pqi_firmware_features[i].supported) 6988 continue; 6989 pqi_firmware_feature_update(ctrl_info, 6990 &pqi_firmware_features[i]); 6991 } 6992 return; 6993 } 6994 6995 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6996 if (!pqi_firmware_features[i].supported) 6997 continue; 6998 if (pqi_is_firmware_feature_enabled(firmware_features, 6999 firmware_features_iomem_addr, 7000 pqi_firmware_features[i].feature_bit)) { 7001 pqi_firmware_features[i].enabled = true; 7002 } 7003 pqi_firmware_feature_update(ctrl_info, 7004 &pqi_firmware_features[i]); 7005 } 7006 } 7007 7008 static void pqi_init_firmware_features(void) 7009 { 7010 unsigned int i; 7011 7012 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 7013 pqi_firmware_features[i].supported = false; 7014 pqi_firmware_features[i].enabled = false; 7015 } 7016 } 7017 7018 static void pqi_process_firmware_features_section( 7019 struct pqi_config_table_section_info *section_info) 7020 { 7021 mutex_lock(&pqi_firmware_features_mutex); 7022 pqi_init_firmware_features(); 7023 pqi_process_firmware_features(section_info); 7024 mutex_unlock(&pqi_firmware_features_mutex); 7025 } 7026 7027 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) 7028 { 7029 u32 table_length; 7030 u32 section_offset; 7031 void __iomem *table_iomem_addr; 7032 struct pqi_config_table *config_table; 7033 struct pqi_config_table_section_header *section; 7034 struct pqi_config_table_section_info section_info; 7035 7036 table_length = ctrl_info->config_table_length; 7037 if (table_length == 0) 7038 return 0; 7039 7040 config_table = kmalloc(table_length, GFP_KERNEL); 7041 if (!config_table) { 7042 dev_err(&ctrl_info->pci_dev->dev, 7043 "failed to allocate memory for PQI configuration table\n"); 7044 return -ENOMEM; 7045 } 7046 7047 /* 7048 * Copy the config table contents from I/O memory space into the 7049 * temporary buffer. 7050 */ 7051 table_iomem_addr = ctrl_info->iomem_base + 7052 ctrl_info->config_table_offset; 7053 memcpy_fromio(config_table, table_iomem_addr, table_length); 7054 7055 section_info.ctrl_info = ctrl_info; 7056 section_offset = 7057 get_unaligned_le32(&config_table->first_section_offset); 7058 7059 while (section_offset) { 7060 section = (void *)config_table + section_offset; 7061 7062 section_info.section = section; 7063 section_info.section_offset = section_offset; 7064 section_info.section_iomem_addr = 7065 table_iomem_addr + section_offset; 7066 7067 switch (get_unaligned_le16(§ion->section_id)) { 7068 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES: 7069 pqi_process_firmware_features_section(§ion_info); 7070 break; 7071 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT: 7072 if (pqi_disable_heartbeat) 7073 dev_warn(&ctrl_info->pci_dev->dev, 7074 "heartbeat disabled by module parameter\n"); 7075 else 7076 ctrl_info->heartbeat_counter = 7077 table_iomem_addr + 7078 section_offset + 7079 offsetof( 7080 struct pqi_config_table_heartbeat, 7081 heartbeat_counter); 7082 break; 7083 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET: 7084 ctrl_info->soft_reset_status = 7085 table_iomem_addr + 7086 section_offset + 7087 offsetof(struct pqi_config_table_soft_reset, 7088 soft_reset_status); 7089 break; 7090 } 7091 7092 section_offset = 7093 get_unaligned_le16(§ion->next_section_offset); 7094 } 7095 7096 kfree(config_table); 7097 7098 return 0; 7099 } 7100 7101 /* Switches the controller from PQI mode back into SIS mode. */ 7102 7103 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info) 7104 { 7105 int rc; 7106 7107 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE); 7108 rc = pqi_reset(ctrl_info); 7109 if (rc) 7110 return rc; 7111 rc = sis_reenable_sis_mode(ctrl_info); 7112 if (rc) { 7113 dev_err(&ctrl_info->pci_dev->dev, 7114 "re-enabling SIS mode failed with error %d\n", rc); 7115 return rc; 7116 } 7117 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 7118 7119 return 0; 7120 } 7121 7122 /* 7123 * If the controller isn't already in SIS mode, this function forces it into 7124 * SIS mode. 7125 */ 7126 7127 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info) 7128 { 7129 if (!sis_is_firmware_running(ctrl_info)) 7130 return -ENXIO; 7131 7132 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE) 7133 return 0; 7134 7135 if (sis_is_kernel_up(ctrl_info)) { 7136 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 7137 return 0; 7138 } 7139 7140 return pqi_revert_to_sis_mode(ctrl_info); 7141 } 7142 7143 #define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000 7144 7145 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info) 7146 { 7147 int rc; 7148 7149 if (reset_devices) { 7150 sis_soft_reset(ctrl_info); 7151 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); 7152 } else { 7153 rc = pqi_force_sis_mode(ctrl_info); 7154 if (rc) 7155 return rc; 7156 } 7157 7158 /* 7159 * Wait until the controller is ready to start accepting SIS 7160 * commands. 7161 */ 7162 rc = sis_wait_for_ctrl_ready(ctrl_info); 7163 if (rc) 7164 return rc; 7165 7166 /* 7167 * Get the controller properties. This allows us to determine 7168 * whether or not it supports PQI mode. 7169 */ 7170 rc = sis_get_ctrl_properties(ctrl_info); 7171 if (rc) { 7172 dev_err(&ctrl_info->pci_dev->dev, 7173 "error obtaining controller properties\n"); 7174 return rc; 7175 } 7176 7177 rc = sis_get_pqi_capabilities(ctrl_info); 7178 if (rc) { 7179 dev_err(&ctrl_info->pci_dev->dev, 7180 "error obtaining controller capabilities\n"); 7181 return rc; 7182 } 7183 7184 if (reset_devices) { 7185 if (ctrl_info->max_outstanding_requests > 7186 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP) 7187 ctrl_info->max_outstanding_requests = 7188 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP; 7189 } else { 7190 if (ctrl_info->max_outstanding_requests > 7191 PQI_MAX_OUTSTANDING_REQUESTS) 7192 ctrl_info->max_outstanding_requests = 7193 PQI_MAX_OUTSTANDING_REQUESTS; 7194 } 7195 7196 pqi_calculate_io_resources(ctrl_info); 7197 7198 rc = pqi_alloc_error_buffer(ctrl_info); 7199 if (rc) { 7200 dev_err(&ctrl_info->pci_dev->dev, 7201 "failed to allocate PQI error buffer\n"); 7202 return rc; 7203 } 7204 7205 /* 7206 * If the function we are about to call succeeds, the 7207 * controller will transition from legacy SIS mode 7208 * into PQI mode. 7209 */ 7210 rc = sis_init_base_struct_addr(ctrl_info); 7211 if (rc) { 7212 dev_err(&ctrl_info->pci_dev->dev, 7213 "error initializing PQI mode\n"); 7214 return rc; 7215 } 7216 7217 /* Wait for the controller to complete the SIS -> PQI transition. */ 7218 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 7219 if (rc) { 7220 dev_err(&ctrl_info->pci_dev->dev, 7221 "transition to PQI mode failed\n"); 7222 return rc; 7223 } 7224 7225 /* From here on, we are running in PQI mode. */ 7226 ctrl_info->pqi_mode_enabled = true; 7227 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7228 7229 rc = pqi_alloc_admin_queues(ctrl_info); 7230 if (rc) { 7231 dev_err(&ctrl_info->pci_dev->dev, 7232 "failed to allocate admin queues\n"); 7233 return rc; 7234 } 7235 7236 rc = pqi_create_admin_queues(ctrl_info); 7237 if (rc) { 7238 dev_err(&ctrl_info->pci_dev->dev, 7239 "error creating admin queues\n"); 7240 return rc; 7241 } 7242 7243 rc = pqi_report_device_capability(ctrl_info); 7244 if (rc) { 7245 dev_err(&ctrl_info->pci_dev->dev, 7246 "obtaining device capability failed\n"); 7247 return rc; 7248 } 7249 7250 rc = pqi_validate_device_capability(ctrl_info); 7251 if (rc) 7252 return rc; 7253 7254 pqi_calculate_queue_resources(ctrl_info); 7255 7256 rc = pqi_enable_msix_interrupts(ctrl_info); 7257 if (rc) 7258 return rc; 7259 7260 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) { 7261 ctrl_info->max_msix_vectors = 7262 ctrl_info->num_msix_vectors_enabled; 7263 pqi_calculate_queue_resources(ctrl_info); 7264 } 7265 7266 rc = pqi_alloc_io_resources(ctrl_info); 7267 if (rc) 7268 return rc; 7269 7270 rc = pqi_alloc_operational_queues(ctrl_info); 7271 if (rc) { 7272 dev_err(&ctrl_info->pci_dev->dev, 7273 "failed to allocate operational queues\n"); 7274 return rc; 7275 } 7276 7277 pqi_init_operational_queues(ctrl_info); 7278 7279 rc = pqi_request_irqs(ctrl_info); 7280 if (rc) 7281 return rc; 7282 7283 rc = pqi_create_queues(ctrl_info); 7284 if (rc) 7285 return rc; 7286 7287 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 7288 7289 ctrl_info->controller_online = true; 7290 7291 rc = pqi_process_config_table(ctrl_info); 7292 if (rc) 7293 return rc; 7294 7295 pqi_start_heartbeat_timer(ctrl_info); 7296 7297 rc = pqi_enable_events(ctrl_info); 7298 if (rc) { 7299 dev_err(&ctrl_info->pci_dev->dev, 7300 "error enabling events\n"); 7301 return rc; 7302 } 7303 7304 /* Register with the SCSI subsystem. */ 7305 rc = pqi_register_scsi(ctrl_info); 7306 if (rc) 7307 return rc; 7308 7309 rc = pqi_get_ctrl_product_details(ctrl_info); 7310 if (rc) { 7311 dev_err(&ctrl_info->pci_dev->dev, 7312 "error obtaining product details\n"); 7313 return rc; 7314 } 7315 7316 rc = pqi_get_ctrl_serial_number(ctrl_info); 7317 if (rc) { 7318 dev_err(&ctrl_info->pci_dev->dev, 7319 "error obtaining ctrl serial number\n"); 7320 return rc; 7321 } 7322 7323 rc = pqi_set_diag_rescan(ctrl_info); 7324 if (rc) { 7325 dev_err(&ctrl_info->pci_dev->dev, 7326 "error enabling multi-lun rescan\n"); 7327 return rc; 7328 } 7329 7330 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 7331 if (rc) { 7332 dev_err(&ctrl_info->pci_dev->dev, 7333 "error updating host wellness\n"); 7334 return rc; 7335 } 7336 7337 pqi_schedule_update_time_worker(ctrl_info); 7338 7339 pqi_scan_scsi_devices(ctrl_info); 7340 7341 return 0; 7342 } 7343 7344 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info) 7345 { 7346 unsigned int i; 7347 struct pqi_admin_queues *admin_queues; 7348 struct pqi_event_queue *event_queue; 7349 7350 admin_queues = &ctrl_info->admin_queues; 7351 admin_queues->iq_pi_copy = 0; 7352 admin_queues->oq_ci_copy = 0; 7353 writel(0, admin_queues->oq_pi); 7354 7355 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 7356 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0; 7357 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0; 7358 ctrl_info->queue_groups[i].oq_ci_copy = 0; 7359 7360 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]); 7361 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]); 7362 writel(0, ctrl_info->queue_groups[i].oq_pi); 7363 } 7364 7365 event_queue = &ctrl_info->event_queue; 7366 writel(0, event_queue->oq_pi); 7367 event_queue->oq_ci_copy = 0; 7368 } 7369 7370 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) 7371 { 7372 int rc; 7373 7374 rc = pqi_force_sis_mode(ctrl_info); 7375 if (rc) 7376 return rc; 7377 7378 /* 7379 * Wait until the controller is ready to start accepting SIS 7380 * commands. 7381 */ 7382 rc = sis_wait_for_ctrl_ready_resume(ctrl_info); 7383 if (rc) 7384 return rc; 7385 7386 /* 7387 * Get the controller properties. This allows us to determine 7388 * whether or not it supports PQI mode. 7389 */ 7390 rc = sis_get_ctrl_properties(ctrl_info); 7391 if (rc) { 7392 dev_err(&ctrl_info->pci_dev->dev, 7393 "error obtaining controller properties\n"); 7394 return rc; 7395 } 7396 7397 rc = sis_get_pqi_capabilities(ctrl_info); 7398 if (rc) { 7399 dev_err(&ctrl_info->pci_dev->dev, 7400 "error obtaining controller capabilities\n"); 7401 return rc; 7402 } 7403 7404 /* 7405 * If the function we are about to call succeeds, the 7406 * controller will transition from legacy SIS mode 7407 * into PQI mode. 7408 */ 7409 rc = sis_init_base_struct_addr(ctrl_info); 7410 if (rc) { 7411 dev_err(&ctrl_info->pci_dev->dev, 7412 "error initializing PQI mode\n"); 7413 return rc; 7414 } 7415 7416 /* Wait for the controller to complete the SIS -> PQI transition. */ 7417 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 7418 if (rc) { 7419 dev_err(&ctrl_info->pci_dev->dev, 7420 "transition to PQI mode failed\n"); 7421 return rc; 7422 } 7423 7424 /* From here on, we are running in PQI mode. */ 7425 ctrl_info->pqi_mode_enabled = true; 7426 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7427 7428 pqi_reinit_queues(ctrl_info); 7429 7430 rc = pqi_create_admin_queues(ctrl_info); 7431 if (rc) { 7432 dev_err(&ctrl_info->pci_dev->dev, 7433 "error creating admin queues\n"); 7434 return rc; 7435 } 7436 7437 rc = pqi_create_queues(ctrl_info); 7438 if (rc) 7439 return rc; 7440 7441 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 7442 7443 ctrl_info->controller_online = true; 7444 pqi_ctrl_unblock_requests(ctrl_info); 7445 7446 rc = pqi_process_config_table(ctrl_info); 7447 if (rc) 7448 return rc; 7449 7450 pqi_start_heartbeat_timer(ctrl_info); 7451 7452 rc = pqi_enable_events(ctrl_info); 7453 if (rc) { 7454 dev_err(&ctrl_info->pci_dev->dev, 7455 "error enabling events\n"); 7456 return rc; 7457 } 7458 7459 rc = pqi_get_ctrl_product_details(ctrl_info); 7460 if (rc) { 7461 dev_err(&ctrl_info->pci_dev->dev, 7462 "error obtaining product details\n"); 7463 return rc; 7464 } 7465 7466 rc = pqi_set_diag_rescan(ctrl_info); 7467 if (rc) { 7468 dev_err(&ctrl_info->pci_dev->dev, 7469 "error enabling multi-lun rescan\n"); 7470 return rc; 7471 } 7472 7473 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 7474 if (rc) { 7475 dev_err(&ctrl_info->pci_dev->dev, 7476 "error updating host wellness\n"); 7477 return rc; 7478 } 7479 7480 pqi_schedule_update_time_worker(ctrl_info); 7481 7482 pqi_scan_scsi_devices(ctrl_info); 7483 7484 return 0; 7485 } 7486 7487 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev, 7488 u16 timeout) 7489 { 7490 int rc; 7491 7492 rc = pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2, 7493 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout); 7494 7495 return pcibios_err_to_errno(rc); 7496 } 7497 7498 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info) 7499 { 7500 int rc; 7501 u64 mask; 7502 7503 rc = pci_enable_device(ctrl_info->pci_dev); 7504 if (rc) { 7505 dev_err(&ctrl_info->pci_dev->dev, 7506 "failed to enable PCI device\n"); 7507 return rc; 7508 } 7509 7510 if (sizeof(dma_addr_t) > 4) 7511 mask = DMA_BIT_MASK(64); 7512 else 7513 mask = DMA_BIT_MASK(32); 7514 7515 rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask); 7516 if (rc) { 7517 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n"); 7518 goto disable_device; 7519 } 7520 7521 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT); 7522 if (rc) { 7523 dev_err(&ctrl_info->pci_dev->dev, 7524 "failed to obtain PCI resources\n"); 7525 goto disable_device; 7526 } 7527 7528 ctrl_info->iomem_base = ioremap(pci_resource_start( 7529 ctrl_info->pci_dev, 0), 7530 sizeof(struct pqi_ctrl_registers)); 7531 if (!ctrl_info->iomem_base) { 7532 dev_err(&ctrl_info->pci_dev->dev, 7533 "failed to map memory for controller registers\n"); 7534 rc = -ENOMEM; 7535 goto release_regions; 7536 } 7537 7538 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6 7539 7540 /* Increase the PCIe completion timeout. */ 7541 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev, 7542 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS); 7543 if (rc) { 7544 dev_err(&ctrl_info->pci_dev->dev, 7545 "failed to set PCIe completion timeout\n"); 7546 goto release_regions; 7547 } 7548 7549 /* Enable bus mastering. */ 7550 pci_set_master(ctrl_info->pci_dev); 7551 7552 ctrl_info->registers = ctrl_info->iomem_base; 7553 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers; 7554 7555 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info); 7556 7557 return 0; 7558 7559 release_regions: 7560 pci_release_regions(ctrl_info->pci_dev); 7561 disable_device: 7562 pci_disable_device(ctrl_info->pci_dev); 7563 7564 return rc; 7565 } 7566 7567 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info) 7568 { 7569 iounmap(ctrl_info->iomem_base); 7570 pci_release_regions(ctrl_info->pci_dev); 7571 if (pci_is_enabled(ctrl_info->pci_dev)) 7572 pci_disable_device(ctrl_info->pci_dev); 7573 pci_set_drvdata(ctrl_info->pci_dev, NULL); 7574 } 7575 7576 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node) 7577 { 7578 struct pqi_ctrl_info *ctrl_info; 7579 7580 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info), 7581 GFP_KERNEL, numa_node); 7582 if (!ctrl_info) 7583 return NULL; 7584 7585 mutex_init(&ctrl_info->scan_mutex); 7586 mutex_init(&ctrl_info->lun_reset_mutex); 7587 mutex_init(&ctrl_info->ofa_mutex); 7588 7589 INIT_LIST_HEAD(&ctrl_info->scsi_device_list); 7590 spin_lock_init(&ctrl_info->scsi_device_list_lock); 7591 7592 INIT_WORK(&ctrl_info->event_work, pqi_event_worker); 7593 atomic_set(&ctrl_info->num_interrupts, 0); 7594 atomic_set(&ctrl_info->sync_cmds_outstanding, 0); 7595 7596 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker); 7597 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker); 7598 7599 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0); 7600 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker); 7601 7602 sema_init(&ctrl_info->sync_request_sem, 7603 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS); 7604 init_waitqueue_head(&ctrl_info->block_requests_wait); 7605 7606 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 7607 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock); 7608 INIT_WORK(&ctrl_info->raid_bypass_retry_work, 7609 pqi_raid_bypass_retry_worker); 7610 7611 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1; 7612 ctrl_info->irq_mode = IRQ_MODE_NONE; 7613 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS; 7614 7615 return ctrl_info; 7616 } 7617 7618 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info) 7619 { 7620 kfree(ctrl_info); 7621 } 7622 7623 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info) 7624 { 7625 pqi_free_irqs(ctrl_info); 7626 pqi_disable_msix_interrupts(ctrl_info); 7627 } 7628 7629 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info) 7630 { 7631 pqi_stop_heartbeat_timer(ctrl_info); 7632 pqi_free_interrupts(ctrl_info); 7633 if (ctrl_info->queue_memory_base) 7634 dma_free_coherent(&ctrl_info->pci_dev->dev, 7635 ctrl_info->queue_memory_length, 7636 ctrl_info->queue_memory_base, 7637 ctrl_info->queue_memory_base_dma_handle); 7638 if (ctrl_info->admin_queue_memory_base) 7639 dma_free_coherent(&ctrl_info->pci_dev->dev, 7640 ctrl_info->admin_queue_memory_length, 7641 ctrl_info->admin_queue_memory_base, 7642 ctrl_info->admin_queue_memory_base_dma_handle); 7643 pqi_free_all_io_requests(ctrl_info); 7644 if (ctrl_info->error_buffer) 7645 dma_free_coherent(&ctrl_info->pci_dev->dev, 7646 ctrl_info->error_buffer_length, 7647 ctrl_info->error_buffer, 7648 ctrl_info->error_buffer_dma_handle); 7649 if (ctrl_info->iomem_base) 7650 pqi_cleanup_pci_init(ctrl_info); 7651 pqi_free_ctrl_info(ctrl_info); 7652 } 7653 7654 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info) 7655 { 7656 pqi_cancel_rescan_worker(ctrl_info); 7657 pqi_cancel_update_time_worker(ctrl_info); 7658 pqi_unregister_scsi(ctrl_info); 7659 if (ctrl_info->pqi_mode_enabled) 7660 pqi_revert_to_sis_mode(ctrl_info); 7661 pqi_free_ctrl_resources(ctrl_info); 7662 } 7663 7664 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info) 7665 { 7666 pqi_cancel_update_time_worker(ctrl_info); 7667 pqi_cancel_rescan_worker(ctrl_info); 7668 pqi_wait_until_lun_reset_finished(ctrl_info); 7669 pqi_wait_until_scan_finished(ctrl_info); 7670 pqi_ctrl_ofa_start(ctrl_info); 7671 pqi_ctrl_block_requests(ctrl_info); 7672 pqi_ctrl_wait_until_quiesced(ctrl_info); 7673 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS); 7674 pqi_fail_io_queued_for_all_devices(ctrl_info); 7675 pqi_wait_until_inbound_queues_empty(ctrl_info); 7676 pqi_stop_heartbeat_timer(ctrl_info); 7677 ctrl_info->pqi_mode_enabled = false; 7678 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 7679 } 7680 7681 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info) 7682 { 7683 pqi_ofa_free_host_buffer(ctrl_info); 7684 ctrl_info->pqi_mode_enabled = true; 7685 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7686 ctrl_info->controller_online = true; 7687 pqi_ctrl_unblock_requests(ctrl_info); 7688 pqi_start_heartbeat_timer(ctrl_info); 7689 pqi_schedule_update_time_worker(ctrl_info); 7690 pqi_clear_soft_reset_status(ctrl_info, 7691 PQI_SOFT_RESET_ABORT); 7692 pqi_scan_scsi_devices(ctrl_info); 7693 } 7694 7695 static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, 7696 u32 total_size, u32 chunk_size) 7697 { 7698 u32 sg_count; 7699 u32 size; 7700 int i; 7701 struct pqi_sg_descriptor *mem_descriptor = NULL; 7702 struct device *dev; 7703 struct pqi_ofa_memory *ofap; 7704 7705 dev = &ctrl_info->pci_dev->dev; 7706 7707 sg_count = (total_size + chunk_size - 1); 7708 sg_count /= chunk_size; 7709 7710 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7711 7712 if (sg_count*chunk_size < total_size) 7713 goto out; 7714 7715 ctrl_info->pqi_ofa_chunk_virt_addr = 7716 kcalloc(sg_count, sizeof(void *), GFP_KERNEL); 7717 if (!ctrl_info->pqi_ofa_chunk_virt_addr) 7718 goto out; 7719 7720 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) { 7721 dma_addr_t dma_handle; 7722 7723 ctrl_info->pqi_ofa_chunk_virt_addr[i] = 7724 dma_alloc_coherent(dev, chunk_size, &dma_handle, 7725 GFP_KERNEL); 7726 7727 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i]) 7728 break; 7729 7730 mem_descriptor = &ofap->sg_descriptor[i]; 7731 put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address); 7732 put_unaligned_le32 (chunk_size, &mem_descriptor->length); 7733 } 7734 7735 if (!size || size < total_size) 7736 goto out_free_chunks; 7737 7738 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags); 7739 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors); 7740 put_unaligned_le32(size, &ofap->bytes_allocated); 7741 7742 return 0; 7743 7744 out_free_chunks: 7745 while (--i >= 0) { 7746 mem_descriptor = &ofap->sg_descriptor[i]; 7747 dma_free_coherent(dev, chunk_size, 7748 ctrl_info->pqi_ofa_chunk_virt_addr[i], 7749 get_unaligned_le64(&mem_descriptor->address)); 7750 } 7751 kfree(ctrl_info->pqi_ofa_chunk_virt_addr); 7752 7753 out: 7754 put_unaligned_le32 (0, &ofap->bytes_allocated); 7755 return -ENOMEM; 7756 } 7757 7758 static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info) 7759 { 7760 u32 total_size; 7761 u32 min_chunk_size; 7762 u32 chunk_sz; 7763 7764 total_size = le32_to_cpu( 7765 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated); 7766 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS; 7767 7768 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2) 7769 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz)) 7770 return 0; 7771 7772 return -ENOMEM; 7773 } 7774 7775 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, 7776 u32 bytes_requested) 7777 { 7778 struct pqi_ofa_memory *pqi_ofa_memory; 7779 struct device *dev; 7780 7781 dev = &ctrl_info->pci_dev->dev; 7782 pqi_ofa_memory = dma_alloc_coherent(dev, 7783 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, 7784 &ctrl_info->pqi_ofa_mem_dma_handle, 7785 GFP_KERNEL); 7786 7787 if (!pqi_ofa_memory) 7788 return; 7789 7790 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version); 7791 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE, 7792 sizeof(pqi_ofa_memory->signature)); 7793 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested); 7794 7795 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory; 7796 7797 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) { 7798 dev_err(dev, "Failed to allocate host buffer of size = %u", 7799 bytes_requested); 7800 } 7801 7802 return; 7803 } 7804 7805 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info) 7806 { 7807 int i; 7808 struct pqi_sg_descriptor *mem_descriptor; 7809 struct pqi_ofa_memory *ofap; 7810 7811 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7812 7813 if (!ofap) 7814 return; 7815 7816 if (!ofap->bytes_allocated) 7817 goto out; 7818 7819 mem_descriptor = ofap->sg_descriptor; 7820 7821 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors); 7822 i++) { 7823 dma_free_coherent(&ctrl_info->pci_dev->dev, 7824 get_unaligned_le32(&mem_descriptor[i].length), 7825 ctrl_info->pqi_ofa_chunk_virt_addr[i], 7826 get_unaligned_le64(&mem_descriptor[i].address)); 7827 } 7828 kfree(ctrl_info->pqi_ofa_chunk_virt_addr); 7829 7830 out: 7831 dma_free_coherent(&ctrl_info->pci_dev->dev, 7832 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap, 7833 ctrl_info->pqi_ofa_mem_dma_handle); 7834 ctrl_info->pqi_ofa_mem_virt_addr = NULL; 7835 } 7836 7837 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info) 7838 { 7839 struct pqi_vendor_general_request request; 7840 size_t size; 7841 struct pqi_ofa_memory *ofap; 7842 7843 memset(&request, 0, sizeof(request)); 7844 7845 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7846 7847 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; 7848 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 7849 &request.header.iu_length); 7850 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE, 7851 &request.function_code); 7852 7853 if (ofap) { 7854 size = offsetof(struct pqi_ofa_memory, sg_descriptor) + 7855 get_unaligned_le16(&ofap->num_memory_descriptors) * 7856 sizeof(struct pqi_sg_descriptor); 7857 7858 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle, 7859 &request.data.ofa_memory_allocation.buffer_address); 7860 put_unaligned_le32(size, 7861 &request.data.ofa_memory_allocation.buffer_length); 7862 7863 } 7864 7865 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 7866 0, NULL, NO_TIMEOUT); 7867 } 7868 7869 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info) 7870 { 7871 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); 7872 return pqi_ctrl_init_resume(ctrl_info); 7873 } 7874 7875 static void pqi_perform_lockup_action(void) 7876 { 7877 switch (pqi_lockup_action) { 7878 case PANIC: 7879 panic("FATAL: Smart Family Controller lockup detected"); 7880 break; 7881 case REBOOT: 7882 emergency_restart(); 7883 break; 7884 case NONE: 7885 default: 7886 break; 7887 } 7888 } 7889 7890 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = { 7891 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR, 7892 .status = SAM_STAT_CHECK_CONDITION, 7893 }; 7894 7895 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info) 7896 { 7897 unsigned int i; 7898 struct pqi_io_request *io_request; 7899 struct scsi_cmnd *scmd; 7900 7901 for (i = 0; i < ctrl_info->max_io_slots; i++) { 7902 io_request = &ctrl_info->io_request_pool[i]; 7903 if (atomic_read(&io_request->refcount) == 0) 7904 continue; 7905 7906 scmd = io_request->scmd; 7907 if (scmd) { 7908 set_host_byte(scmd, DID_NO_CONNECT); 7909 } else { 7910 io_request->status = -ENXIO; 7911 io_request->error_info = 7912 &pqi_ctrl_offline_raid_error_info; 7913 } 7914 7915 io_request->io_complete_callback(io_request, 7916 io_request->context); 7917 } 7918 } 7919 7920 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info) 7921 { 7922 pqi_perform_lockup_action(); 7923 pqi_stop_heartbeat_timer(ctrl_info); 7924 pqi_free_interrupts(ctrl_info); 7925 pqi_cancel_rescan_worker(ctrl_info); 7926 pqi_cancel_update_time_worker(ctrl_info); 7927 pqi_ctrl_wait_until_quiesced(ctrl_info); 7928 pqi_fail_all_outstanding_requests(ctrl_info); 7929 pqi_clear_all_queued_raid_bypass_retries(ctrl_info); 7930 pqi_ctrl_unblock_requests(ctrl_info); 7931 } 7932 7933 static void pqi_ctrl_offline_worker(struct work_struct *work) 7934 { 7935 struct pqi_ctrl_info *ctrl_info; 7936 7937 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work); 7938 pqi_take_ctrl_offline_deferred(ctrl_info); 7939 } 7940 7941 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info) 7942 { 7943 if (!ctrl_info->controller_online) 7944 return; 7945 7946 ctrl_info->controller_online = false; 7947 ctrl_info->pqi_mode_enabled = false; 7948 pqi_ctrl_block_requests(ctrl_info); 7949 if (!pqi_disable_ctrl_shutdown) 7950 sis_shutdown_ctrl(ctrl_info); 7951 pci_disable_device(ctrl_info->pci_dev); 7952 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n"); 7953 schedule_work(&ctrl_info->ctrl_offline_work); 7954 } 7955 7956 static void pqi_print_ctrl_info(struct pci_dev *pci_dev, 7957 const struct pci_device_id *id) 7958 { 7959 char *ctrl_description; 7960 7961 if (id->driver_data) 7962 ctrl_description = (char *)id->driver_data; 7963 else 7964 ctrl_description = "Microsemi Smart Family Controller"; 7965 7966 dev_info(&pci_dev->dev, "%s found\n", ctrl_description); 7967 } 7968 7969 static int pqi_pci_probe(struct pci_dev *pci_dev, 7970 const struct pci_device_id *id) 7971 { 7972 int rc; 7973 int node, cp_node; 7974 struct pqi_ctrl_info *ctrl_info; 7975 7976 pqi_print_ctrl_info(pci_dev, id); 7977 7978 if (pqi_disable_device_id_wildcards && 7979 id->subvendor == PCI_ANY_ID && 7980 id->subdevice == PCI_ANY_ID) { 7981 dev_warn(&pci_dev->dev, 7982 "controller not probed because device ID wildcards are disabled\n"); 7983 return -ENODEV; 7984 } 7985 7986 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID) 7987 dev_warn(&pci_dev->dev, 7988 "controller device ID matched using wildcards\n"); 7989 7990 node = dev_to_node(&pci_dev->dev); 7991 if (node == NUMA_NO_NODE) { 7992 cp_node = cpu_to_node(0); 7993 if (cp_node == NUMA_NO_NODE) 7994 cp_node = 0; 7995 set_dev_node(&pci_dev->dev, cp_node); 7996 } 7997 7998 ctrl_info = pqi_alloc_ctrl_info(node); 7999 if (!ctrl_info) { 8000 dev_err(&pci_dev->dev, 8001 "failed to allocate controller info block\n"); 8002 return -ENOMEM; 8003 } 8004 8005 ctrl_info->pci_dev = pci_dev; 8006 8007 rc = pqi_pci_init(ctrl_info); 8008 if (rc) 8009 goto error; 8010 8011 rc = pqi_ctrl_init(ctrl_info); 8012 if (rc) 8013 goto error; 8014 8015 return 0; 8016 8017 error: 8018 pqi_remove_ctrl(ctrl_info); 8019 8020 return rc; 8021 } 8022 8023 static void pqi_pci_remove(struct pci_dev *pci_dev) 8024 { 8025 struct pqi_ctrl_info *ctrl_info; 8026 8027 ctrl_info = pci_get_drvdata(pci_dev); 8028 if (!ctrl_info) 8029 return; 8030 8031 pqi_remove_ctrl(ctrl_info); 8032 } 8033 8034 static void pqi_crash_if_pending_command(struct pqi_ctrl_info *ctrl_info) 8035 { 8036 unsigned int i; 8037 struct pqi_io_request *io_request; 8038 struct scsi_cmnd *scmd; 8039 8040 for (i = 0; i < ctrl_info->max_io_slots; i++) { 8041 io_request = &ctrl_info->io_request_pool[i]; 8042 if (atomic_read(&io_request->refcount) == 0) 8043 continue; 8044 scmd = io_request->scmd; 8045 WARN_ON(scmd != NULL); /* IO command from SML */ 8046 WARN_ON(scmd == NULL); /* Non-IO cmd or driver initiated*/ 8047 } 8048 } 8049 8050 static void pqi_shutdown(struct pci_dev *pci_dev) 8051 { 8052 int rc; 8053 struct pqi_ctrl_info *ctrl_info; 8054 8055 ctrl_info = pci_get_drvdata(pci_dev); 8056 if (!ctrl_info) { 8057 dev_err(&pci_dev->dev, 8058 "cache could not be flushed\n"); 8059 return; 8060 } 8061 8062 pqi_disable_events(ctrl_info); 8063 pqi_wait_until_ofa_finished(ctrl_info); 8064 pqi_cancel_update_time_worker(ctrl_info); 8065 pqi_cancel_rescan_worker(ctrl_info); 8066 pqi_cancel_event_worker(ctrl_info); 8067 8068 pqi_ctrl_shutdown_start(ctrl_info); 8069 pqi_ctrl_wait_until_quiesced(ctrl_info); 8070 8071 rc = pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); 8072 if (rc) { 8073 dev_err(&pci_dev->dev, 8074 "wait for pending I/O failed\n"); 8075 return; 8076 } 8077 8078 pqi_ctrl_block_device_reset(ctrl_info); 8079 pqi_wait_until_lun_reset_finished(ctrl_info); 8080 8081 /* 8082 * Write all data in the controller's battery-backed cache to 8083 * storage. 8084 */ 8085 rc = pqi_flush_cache(ctrl_info, SHUTDOWN); 8086 if (rc) 8087 dev_err(&pci_dev->dev, 8088 "unable to flush controller cache\n"); 8089 8090 pqi_ctrl_block_requests(ctrl_info); 8091 8092 rc = pqi_ctrl_wait_for_pending_sync_cmds(ctrl_info); 8093 if (rc) { 8094 dev_err(&pci_dev->dev, 8095 "wait for pending sync cmds failed\n"); 8096 return; 8097 } 8098 8099 pqi_crash_if_pending_command(ctrl_info); 8100 pqi_reset(ctrl_info); 8101 } 8102 8103 static void pqi_process_lockup_action_param(void) 8104 { 8105 unsigned int i; 8106 8107 if (!pqi_lockup_action_param) 8108 return; 8109 8110 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 8111 if (strcmp(pqi_lockup_action_param, 8112 pqi_lockup_actions[i].name) == 0) { 8113 pqi_lockup_action = pqi_lockup_actions[i].action; 8114 return; 8115 } 8116 } 8117 8118 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n", 8119 DRIVER_NAME_SHORT, pqi_lockup_action_param); 8120 } 8121 8122 static void pqi_process_module_params(void) 8123 { 8124 pqi_process_lockup_action_param(); 8125 } 8126 8127 static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state) 8128 { 8129 struct pqi_ctrl_info *ctrl_info; 8130 8131 ctrl_info = pci_get_drvdata(pci_dev); 8132 8133 pqi_disable_events(ctrl_info); 8134 pqi_cancel_update_time_worker(ctrl_info); 8135 pqi_cancel_rescan_worker(ctrl_info); 8136 pqi_wait_until_scan_finished(ctrl_info); 8137 pqi_wait_until_lun_reset_finished(ctrl_info); 8138 pqi_wait_until_ofa_finished(ctrl_info); 8139 pqi_flush_cache(ctrl_info, SUSPEND); 8140 pqi_ctrl_block_requests(ctrl_info); 8141 pqi_ctrl_wait_until_quiesced(ctrl_info); 8142 pqi_wait_until_inbound_queues_empty(ctrl_info); 8143 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); 8144 pqi_stop_heartbeat_timer(ctrl_info); 8145 8146 if (state.event == PM_EVENT_FREEZE) 8147 return 0; 8148 8149 pci_save_state(pci_dev); 8150 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)); 8151 8152 ctrl_info->controller_online = false; 8153 ctrl_info->pqi_mode_enabled = false; 8154 8155 return 0; 8156 } 8157 8158 static __maybe_unused int pqi_resume(struct pci_dev *pci_dev) 8159 { 8160 int rc; 8161 struct pqi_ctrl_info *ctrl_info; 8162 8163 ctrl_info = pci_get_drvdata(pci_dev); 8164 8165 if (pci_dev->current_state != PCI_D0) { 8166 ctrl_info->max_hw_queue_index = 0; 8167 pqi_free_interrupts(ctrl_info); 8168 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX); 8169 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler, 8170 IRQF_SHARED, DRIVER_NAME_SHORT, 8171 &ctrl_info->queue_groups[0]); 8172 if (rc) { 8173 dev_err(&ctrl_info->pci_dev->dev, 8174 "irq %u init failed with error %d\n", 8175 pci_dev->irq, rc); 8176 return rc; 8177 } 8178 pqi_start_heartbeat_timer(ctrl_info); 8179 pqi_ctrl_unblock_requests(ctrl_info); 8180 return 0; 8181 } 8182 8183 pci_set_power_state(pci_dev, PCI_D0); 8184 pci_restore_state(pci_dev); 8185 8186 return pqi_ctrl_init_resume(ctrl_info); 8187 } 8188 8189 /* Define the PCI IDs for the controllers that we support. */ 8190 static const struct pci_device_id pqi_pci_id_table[] = { 8191 { 8192 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8193 0x105b, 0x1211) 8194 }, 8195 { 8196 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8197 0x105b, 0x1321) 8198 }, 8199 { 8200 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8201 0x152d, 0x8a22) 8202 }, 8203 { 8204 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8205 0x152d, 0x8a23) 8206 }, 8207 { 8208 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8209 0x152d, 0x8a24) 8210 }, 8211 { 8212 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8213 0x152d, 0x8a36) 8214 }, 8215 { 8216 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8217 0x152d, 0x8a37) 8218 }, 8219 { 8220 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8221 0x193d, 0x1104) 8222 }, 8223 { 8224 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8225 0x193d, 0x1105) 8226 }, 8227 { 8228 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8229 0x193d, 0x1106) 8230 }, 8231 { 8232 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8233 0x193d, 0x1107) 8234 }, 8235 { 8236 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8237 0x193d, 0x8460) 8238 }, 8239 { 8240 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8241 0x193d, 0x8461) 8242 }, 8243 { 8244 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8245 0x193d, 0xc460) 8246 }, 8247 { 8248 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8249 0x193d, 0xc461) 8250 }, 8251 { 8252 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8253 0x193d, 0xf460) 8254 }, 8255 { 8256 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8257 0x193d, 0xf461) 8258 }, 8259 { 8260 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8261 0x1bd4, 0x0045) 8262 }, 8263 { 8264 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8265 0x1bd4, 0x0046) 8266 }, 8267 { 8268 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8269 0x1bd4, 0x0047) 8270 }, 8271 { 8272 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8273 0x1bd4, 0x0048) 8274 }, 8275 { 8276 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8277 0x1bd4, 0x004a) 8278 }, 8279 { 8280 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8281 0x1bd4, 0x004b) 8282 }, 8283 { 8284 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8285 0x1bd4, 0x004c) 8286 }, 8287 { 8288 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8289 0x1bd4, 0x004f) 8290 }, 8291 { 8292 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8293 0x19e5, 0xd227) 8294 }, 8295 { 8296 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8297 0x19e5, 0xd228) 8298 }, 8299 { 8300 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8301 0x19e5, 0xd229) 8302 }, 8303 { 8304 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8305 0x19e5, 0xd22a) 8306 }, 8307 { 8308 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8309 0x19e5, 0xd22b) 8310 }, 8311 { 8312 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8313 0x19e5, 0xd22c) 8314 }, 8315 { 8316 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8317 PCI_VENDOR_ID_ADAPTEC2, 0x0110) 8318 }, 8319 { 8320 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8321 PCI_VENDOR_ID_ADAPTEC2, 0x0608) 8322 }, 8323 { 8324 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8325 PCI_VENDOR_ID_ADAPTEC2, 0x0800) 8326 }, 8327 { 8328 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8329 PCI_VENDOR_ID_ADAPTEC2, 0x0801) 8330 }, 8331 { 8332 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8333 PCI_VENDOR_ID_ADAPTEC2, 0x0802) 8334 }, 8335 { 8336 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8337 PCI_VENDOR_ID_ADAPTEC2, 0x0803) 8338 }, 8339 { 8340 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8341 PCI_VENDOR_ID_ADAPTEC2, 0x0804) 8342 }, 8343 { 8344 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8345 PCI_VENDOR_ID_ADAPTEC2, 0x0805) 8346 }, 8347 { 8348 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8349 PCI_VENDOR_ID_ADAPTEC2, 0x0806) 8350 }, 8351 { 8352 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8353 PCI_VENDOR_ID_ADAPTEC2, 0x0807) 8354 }, 8355 { 8356 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8357 PCI_VENDOR_ID_ADAPTEC2, 0x0808) 8358 }, 8359 { 8360 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8361 PCI_VENDOR_ID_ADAPTEC2, 0x0809) 8362 }, 8363 { 8364 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8365 PCI_VENDOR_ID_ADAPTEC2, 0x080a) 8366 }, 8367 { 8368 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8369 PCI_VENDOR_ID_ADAPTEC2, 0x0900) 8370 }, 8371 { 8372 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8373 PCI_VENDOR_ID_ADAPTEC2, 0x0901) 8374 }, 8375 { 8376 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8377 PCI_VENDOR_ID_ADAPTEC2, 0x0902) 8378 }, 8379 { 8380 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8381 PCI_VENDOR_ID_ADAPTEC2, 0x0903) 8382 }, 8383 { 8384 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8385 PCI_VENDOR_ID_ADAPTEC2, 0x0904) 8386 }, 8387 { 8388 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8389 PCI_VENDOR_ID_ADAPTEC2, 0x0905) 8390 }, 8391 { 8392 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8393 PCI_VENDOR_ID_ADAPTEC2, 0x0906) 8394 }, 8395 { 8396 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8397 PCI_VENDOR_ID_ADAPTEC2, 0x0907) 8398 }, 8399 { 8400 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8401 PCI_VENDOR_ID_ADAPTEC2, 0x0908) 8402 }, 8403 { 8404 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8405 PCI_VENDOR_ID_ADAPTEC2, 0x090a) 8406 }, 8407 { 8408 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8409 PCI_VENDOR_ID_ADAPTEC2, 0x1200) 8410 }, 8411 { 8412 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8413 PCI_VENDOR_ID_ADAPTEC2, 0x1201) 8414 }, 8415 { 8416 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8417 PCI_VENDOR_ID_ADAPTEC2, 0x1202) 8418 }, 8419 { 8420 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8421 PCI_VENDOR_ID_ADAPTEC2, 0x1280) 8422 }, 8423 { 8424 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8425 PCI_VENDOR_ID_ADAPTEC2, 0x1281) 8426 }, 8427 { 8428 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8429 PCI_VENDOR_ID_ADAPTEC2, 0x1282) 8430 }, 8431 { 8432 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8433 PCI_VENDOR_ID_ADAPTEC2, 0x1300) 8434 }, 8435 { 8436 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8437 PCI_VENDOR_ID_ADAPTEC2, 0x1301) 8438 }, 8439 { 8440 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8441 PCI_VENDOR_ID_ADAPTEC2, 0x1302) 8442 }, 8443 { 8444 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8445 PCI_VENDOR_ID_ADAPTEC2, 0x1303) 8446 }, 8447 { 8448 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8449 PCI_VENDOR_ID_ADAPTEC2, 0x1380) 8450 }, 8451 { 8452 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8453 PCI_VENDOR_ID_ADVANTECH, 0x8312) 8454 }, 8455 { 8456 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8457 PCI_VENDOR_ID_DELL, 0x1fe0) 8458 }, 8459 { 8460 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8461 PCI_VENDOR_ID_HP, 0x0600) 8462 }, 8463 { 8464 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8465 PCI_VENDOR_ID_HP, 0x0601) 8466 }, 8467 { 8468 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8469 PCI_VENDOR_ID_HP, 0x0602) 8470 }, 8471 { 8472 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8473 PCI_VENDOR_ID_HP, 0x0603) 8474 }, 8475 { 8476 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8477 PCI_VENDOR_ID_HP, 0x0609) 8478 }, 8479 { 8480 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8481 PCI_VENDOR_ID_HP, 0x0650) 8482 }, 8483 { 8484 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8485 PCI_VENDOR_ID_HP, 0x0651) 8486 }, 8487 { 8488 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8489 PCI_VENDOR_ID_HP, 0x0652) 8490 }, 8491 { 8492 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8493 PCI_VENDOR_ID_HP, 0x0653) 8494 }, 8495 { 8496 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8497 PCI_VENDOR_ID_HP, 0x0654) 8498 }, 8499 { 8500 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8501 PCI_VENDOR_ID_HP, 0x0655) 8502 }, 8503 { 8504 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8505 PCI_VENDOR_ID_HP, 0x0700) 8506 }, 8507 { 8508 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8509 PCI_VENDOR_ID_HP, 0x0701) 8510 }, 8511 { 8512 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8513 PCI_VENDOR_ID_HP, 0x1001) 8514 }, 8515 { 8516 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8517 PCI_VENDOR_ID_HP, 0x1100) 8518 }, 8519 { 8520 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8521 PCI_VENDOR_ID_HP, 0x1101) 8522 }, 8523 { 8524 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8525 0x1d8d, 0x0800) 8526 }, 8527 { 8528 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8529 0x1d8d, 0x0908) 8530 }, 8531 { 8532 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8533 0x1d8d, 0x0806) 8534 }, 8535 { 8536 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8537 0x1d8d, 0x0916) 8538 }, 8539 { 8540 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8541 PCI_VENDOR_ID_GIGABYTE, 0x1000) 8542 }, 8543 { 8544 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8545 PCI_ANY_ID, PCI_ANY_ID) 8546 }, 8547 { 0 } 8548 }; 8549 8550 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table); 8551 8552 static struct pci_driver pqi_pci_driver = { 8553 .name = DRIVER_NAME_SHORT, 8554 .id_table = pqi_pci_id_table, 8555 .probe = pqi_pci_probe, 8556 .remove = pqi_pci_remove, 8557 .shutdown = pqi_shutdown, 8558 #if defined(CONFIG_PM) 8559 .suspend = pqi_suspend, 8560 .resume = pqi_resume, 8561 #endif 8562 }; 8563 8564 static int __init pqi_init(void) 8565 { 8566 int rc; 8567 8568 pr_info(DRIVER_NAME "\n"); 8569 8570 pqi_sas_transport_template = sas_attach_transport(&pqi_sas_transport_functions); 8571 if (!pqi_sas_transport_template) 8572 return -ENODEV; 8573 8574 pqi_process_module_params(); 8575 8576 rc = pci_register_driver(&pqi_pci_driver); 8577 if (rc) 8578 sas_release_transport(pqi_sas_transport_template); 8579 8580 return rc; 8581 } 8582 8583 static void __exit pqi_cleanup(void) 8584 { 8585 pci_unregister_driver(&pqi_pci_driver); 8586 sas_release_transport(pqi_sas_transport_template); 8587 } 8588 8589 module_init(pqi_init); 8590 module_exit(pqi_cleanup); 8591 8592 static void __attribute__((unused)) verify_structures(void) 8593 { 8594 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8595 sis_host_to_ctrl_doorbell) != 0x20); 8596 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8597 sis_interrupt_mask) != 0x34); 8598 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8599 sis_ctrl_to_host_doorbell) != 0x9c); 8600 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8601 sis_ctrl_to_host_doorbell_clear) != 0xa0); 8602 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8603 sis_driver_scratch) != 0xb0); 8604 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8605 sis_firmware_status) != 0xbc); 8606 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8607 sis_mailbox) != 0x1000); 8608 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8609 pqi_registers) != 0x4000); 8610 8611 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8612 iu_type) != 0x0); 8613 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8614 iu_length) != 0x2); 8615 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8616 response_queue_id) != 0x4); 8617 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8618 work_area) != 0x6); 8619 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8); 8620 8621 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8622 status) != 0x0); 8623 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8624 service_response) != 0x1); 8625 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8626 data_present) != 0x2); 8627 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8628 reserved) != 0x3); 8629 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8630 residual_count) != 0x4); 8631 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8632 data_length) != 0x8); 8633 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8634 reserved1) != 0xa); 8635 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8636 data) != 0xc); 8637 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c); 8638 8639 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8640 data_in_result) != 0x0); 8641 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8642 data_out_result) != 0x1); 8643 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8644 reserved) != 0x2); 8645 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8646 status) != 0x5); 8647 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8648 status_qualifier) != 0x6); 8649 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8650 sense_data_length) != 0x8); 8651 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8652 response_data_length) != 0xa); 8653 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8654 data_in_transferred) != 0xc); 8655 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8656 data_out_transferred) != 0x10); 8657 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8658 data) != 0x14); 8659 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114); 8660 8661 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8662 signature) != 0x0); 8663 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8664 function_and_status_code) != 0x8); 8665 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8666 max_admin_iq_elements) != 0x10); 8667 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8668 max_admin_oq_elements) != 0x11); 8669 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8670 admin_iq_element_length) != 0x12); 8671 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8672 admin_oq_element_length) != 0x13); 8673 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8674 max_reset_timeout) != 0x14); 8675 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8676 legacy_intx_status) != 0x18); 8677 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8678 legacy_intx_mask_set) != 0x1c); 8679 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8680 legacy_intx_mask_clear) != 0x20); 8681 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8682 device_status) != 0x40); 8683 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8684 admin_iq_pi_offset) != 0x48); 8685 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8686 admin_oq_ci_offset) != 0x50); 8687 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8688 admin_iq_element_array_addr) != 0x58); 8689 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8690 admin_oq_element_array_addr) != 0x60); 8691 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8692 admin_iq_ci_addr) != 0x68); 8693 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8694 admin_oq_pi_addr) != 0x70); 8695 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8696 admin_iq_num_elements) != 0x78); 8697 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8698 admin_oq_num_elements) != 0x79); 8699 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8700 admin_queue_int_msg_num) != 0x7a); 8701 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8702 device_error) != 0x80); 8703 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8704 error_details) != 0x88); 8705 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8706 device_reset) != 0x90); 8707 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8708 power_action) != 0x94); 8709 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100); 8710 8711 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8712 header.iu_type) != 0); 8713 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8714 header.iu_length) != 2); 8715 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8716 header.work_area) != 6); 8717 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8718 request_id) != 8); 8719 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8720 function_code) != 10); 8721 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8722 data.report_device_capability.buffer_length) != 44); 8723 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8724 data.report_device_capability.sg_descriptor) != 48); 8725 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8726 data.create_operational_iq.queue_id) != 12); 8727 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8728 data.create_operational_iq.element_array_addr) != 16); 8729 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8730 data.create_operational_iq.ci_addr) != 24); 8731 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8732 data.create_operational_iq.num_elements) != 32); 8733 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8734 data.create_operational_iq.element_length) != 34); 8735 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8736 data.create_operational_iq.queue_protocol) != 36); 8737 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8738 data.create_operational_oq.queue_id) != 12); 8739 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8740 data.create_operational_oq.element_array_addr) != 16); 8741 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8742 data.create_operational_oq.pi_addr) != 24); 8743 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8744 data.create_operational_oq.num_elements) != 32); 8745 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8746 data.create_operational_oq.element_length) != 34); 8747 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8748 data.create_operational_oq.queue_protocol) != 36); 8749 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8750 data.create_operational_oq.int_msg_num) != 40); 8751 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8752 data.create_operational_oq.coalescing_count) != 42); 8753 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8754 data.create_operational_oq.min_coalescing_time) != 44); 8755 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8756 data.create_operational_oq.max_coalescing_time) != 48); 8757 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8758 data.delete_operational_queue.queue_id) != 12); 8759 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64); 8760 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request, 8761 data.create_operational_iq) != 64 - 11); 8762 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request, 8763 data.create_operational_oq) != 64 - 11); 8764 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request, 8765 data.delete_operational_queue) != 64 - 11); 8766 8767 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8768 header.iu_type) != 0); 8769 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8770 header.iu_length) != 2); 8771 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8772 header.work_area) != 6); 8773 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8774 request_id) != 8); 8775 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8776 function_code) != 10); 8777 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8778 status) != 11); 8779 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8780 data.create_operational_iq.status_descriptor) != 12); 8781 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8782 data.create_operational_iq.iq_pi_offset) != 16); 8783 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8784 data.create_operational_oq.status_descriptor) != 12); 8785 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8786 data.create_operational_oq.oq_ci_offset) != 16); 8787 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64); 8788 8789 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8790 header.iu_type) != 0); 8791 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8792 header.iu_length) != 2); 8793 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8794 header.response_queue_id) != 4); 8795 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8796 header.work_area) != 6); 8797 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8798 request_id) != 8); 8799 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8800 nexus_id) != 10); 8801 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8802 buffer_length) != 12); 8803 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8804 lun_number) != 16); 8805 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8806 protocol_specific) != 24); 8807 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8808 error_index) != 27); 8809 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8810 cdb) != 32); 8811 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8812 timeout) != 60); 8813 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8814 sg_descriptors) != 64); 8815 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) != 8816 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 8817 8818 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8819 header.iu_type) != 0); 8820 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8821 header.iu_length) != 2); 8822 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8823 header.response_queue_id) != 4); 8824 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8825 header.work_area) != 6); 8826 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8827 request_id) != 8); 8828 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8829 nexus_id) != 12); 8830 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8831 buffer_length) != 16); 8832 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8833 data_encryption_key_index) != 22); 8834 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8835 encrypt_tweak_lower) != 24); 8836 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8837 encrypt_tweak_upper) != 28); 8838 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8839 cdb) != 32); 8840 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8841 error_index) != 48); 8842 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8843 num_sg_descriptors) != 50); 8844 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8845 cdb_length) != 51); 8846 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8847 lun_number) != 52); 8848 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8849 sg_descriptors) != 64); 8850 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) != 8851 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 8852 8853 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8854 header.iu_type) != 0); 8855 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8856 header.iu_length) != 2); 8857 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8858 request_id) != 8); 8859 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8860 error_index) != 10); 8861 8862 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8863 header.iu_type) != 0); 8864 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8865 header.iu_length) != 2); 8866 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8867 header.response_queue_id) != 4); 8868 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8869 request_id) != 8); 8870 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8871 data.report_event_configuration.buffer_length) != 12); 8872 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8873 data.report_event_configuration.sg_descriptors) != 16); 8874 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8875 data.set_event_configuration.global_event_oq_id) != 10); 8876 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8877 data.set_event_configuration.buffer_length) != 12); 8878 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8879 data.set_event_configuration.sg_descriptors) != 16); 8880 8881 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 8882 max_inbound_iu_length) != 6); 8883 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 8884 max_outbound_iu_length) != 14); 8885 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16); 8886 8887 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8888 data_length) != 0); 8889 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8890 iq_arbitration_priority_support_bitmask) != 8); 8891 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8892 maximum_aw_a) != 9); 8893 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8894 maximum_aw_b) != 10); 8895 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8896 maximum_aw_c) != 11); 8897 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8898 max_inbound_queues) != 16); 8899 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8900 max_elements_per_iq) != 18); 8901 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8902 max_iq_element_length) != 24); 8903 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8904 min_iq_element_length) != 26); 8905 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8906 max_outbound_queues) != 30); 8907 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8908 max_elements_per_oq) != 32); 8909 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8910 intr_coalescing_time_granularity) != 34); 8911 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8912 max_oq_element_length) != 36); 8913 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8914 min_oq_element_length) != 38); 8915 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8916 iu_layer_descriptors) != 64); 8917 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576); 8918 8919 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 8920 event_type) != 0); 8921 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 8922 oq_id) != 2); 8923 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4); 8924 8925 BUILD_BUG_ON(offsetof(struct pqi_event_config, 8926 num_event_descriptors) != 2); 8927 BUILD_BUG_ON(offsetof(struct pqi_event_config, 8928 descriptors) != 4); 8929 8930 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS != 8931 ARRAY_SIZE(pqi_supported_event_types)); 8932 8933 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8934 header.iu_type) != 0); 8935 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8936 header.iu_length) != 2); 8937 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8938 event_type) != 8); 8939 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8940 event_id) != 10); 8941 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8942 additional_event_id) != 12); 8943 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8944 data) != 16); 8945 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32); 8946 8947 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8948 header.iu_type) != 0); 8949 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8950 header.iu_length) != 2); 8951 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8952 event_type) != 8); 8953 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8954 event_id) != 10); 8955 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8956 additional_event_id) != 12); 8957 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16); 8958 8959 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8960 header.iu_type) != 0); 8961 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8962 header.iu_length) != 2); 8963 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8964 request_id) != 8); 8965 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8966 nexus_id) != 10); 8967 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8968 timeout) != 14); 8969 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8970 lun_number) != 16); 8971 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8972 protocol_specific) != 24); 8973 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8974 outbound_queue_id_to_manage) != 26); 8975 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8976 request_id_to_manage) != 28); 8977 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8978 task_management_function) != 30); 8979 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32); 8980 8981 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8982 header.iu_type) != 0); 8983 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8984 header.iu_length) != 2); 8985 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8986 request_id) != 8); 8987 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8988 nexus_id) != 10); 8989 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8990 additional_response_info) != 12); 8991 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8992 response_code) != 15); 8993 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16); 8994 8995 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8996 configured_logical_drive_count) != 0); 8997 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8998 configuration_signature) != 1); 8999 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9000 firmware_version) != 5); 9001 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9002 extended_logical_unit_count) != 154); 9003 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9004 firmware_build_number) != 190); 9005 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9006 controller_mode) != 292); 9007 9008 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9009 phys_bay_in_box) != 115); 9010 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9011 device_type) != 120); 9012 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9013 redundant_path_present_map) != 1736); 9014 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9015 active_path_number) != 1738); 9016 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9017 alternate_paths_phys_connector) != 1739); 9018 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9019 alternate_paths_phys_box_on_port) != 1755); 9020 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9021 current_queue_depth_limit) != 1796); 9022 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560); 9023 9024 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255); 9025 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255); 9026 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH % 9027 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 9028 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH % 9029 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 9030 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560); 9031 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH % 9032 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 9033 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560); 9034 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH % 9035 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 9036 9037 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS); 9038 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= 9039 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP); 9040 } 9041