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 "1.2.16-010" 37 #define DRIVER_MAJOR 1 38 #define DRIVER_MINOR 2 39 #define DRIVER_RELEASE 16 40 #define DRIVER_REVISION 10 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_SUPPORTED_DEVICE("Microsemi Smart Family Controllers"); 52 MODULE_VERSION(DRIVER_VERSION); 53 MODULE_LICENSE("GPL"); 54 55 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info); 56 static void pqi_ctrl_offline_worker(struct work_struct *work); 57 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info); 58 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info); 59 static void pqi_scan_start(struct Scsi_Host *shost); 60 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, 61 struct pqi_queue_group *queue_group, enum pqi_io_path path, 62 struct pqi_io_request *io_request); 63 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, 64 struct pqi_iu_header *request, unsigned int flags, 65 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs); 66 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, 67 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, 68 unsigned int cdb_length, struct pqi_queue_group *queue_group, 69 struct pqi_encryption_info *encryption_info, bool raid_bypass); 70 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info); 71 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info); 72 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info); 73 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, 74 u32 bytes_requested); 75 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info); 76 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info); 77 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 78 struct pqi_scsi_dev *device, unsigned long timeout_secs); 79 80 /* for flags argument to pqi_submit_raid_request_synchronous() */ 81 #define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1 82 83 static struct scsi_transport_template *pqi_sas_transport_template; 84 85 static atomic_t pqi_controller_count = ATOMIC_INIT(0); 86 87 enum pqi_lockup_action { 88 NONE, 89 REBOOT, 90 PANIC 91 }; 92 93 static enum pqi_lockup_action pqi_lockup_action = NONE; 94 95 static struct { 96 enum pqi_lockup_action action; 97 char *name; 98 } pqi_lockup_actions[] = { 99 { 100 .action = NONE, 101 .name = "none", 102 }, 103 { 104 .action = REBOOT, 105 .name = "reboot", 106 }, 107 { 108 .action = PANIC, 109 .name = "panic", 110 }, 111 }; 112 113 static unsigned int pqi_supported_event_types[] = { 114 PQI_EVENT_TYPE_HOTPLUG, 115 PQI_EVENT_TYPE_HARDWARE, 116 PQI_EVENT_TYPE_PHYSICAL_DEVICE, 117 PQI_EVENT_TYPE_LOGICAL_DEVICE, 118 PQI_EVENT_TYPE_OFA, 119 PQI_EVENT_TYPE_AIO_STATE_CHANGE, 120 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE, 121 }; 122 123 static int pqi_disable_device_id_wildcards; 124 module_param_named(disable_device_id_wildcards, 125 pqi_disable_device_id_wildcards, int, 0644); 126 MODULE_PARM_DESC(disable_device_id_wildcards, 127 "Disable device ID wildcards."); 128 129 static int pqi_disable_heartbeat; 130 module_param_named(disable_heartbeat, 131 pqi_disable_heartbeat, int, 0644); 132 MODULE_PARM_DESC(disable_heartbeat, 133 "Disable heartbeat."); 134 135 static int pqi_disable_ctrl_shutdown; 136 module_param_named(disable_ctrl_shutdown, 137 pqi_disable_ctrl_shutdown, int, 0644); 138 MODULE_PARM_DESC(disable_ctrl_shutdown, 139 "Disable controller shutdown when controller locked up."); 140 141 static char *pqi_lockup_action_param; 142 module_param_named(lockup_action, 143 pqi_lockup_action_param, charp, 0644); 144 MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n" 145 "\t\tSupported: none, reboot, panic\n" 146 "\t\tDefault: none"); 147 148 static int pqi_expose_ld_first; 149 module_param_named(expose_ld_first, 150 pqi_expose_ld_first, int, 0644); 151 MODULE_PARM_DESC(expose_ld_first, 152 "Expose logical drives before physical drives."); 153 154 static int pqi_hide_vsep; 155 module_param_named(hide_vsep, 156 pqi_hide_vsep, int, 0644); 157 MODULE_PARM_DESC(hide_vsep, 158 "Hide the virtual SEP for direct attached drives."); 159 160 static char *raid_levels[] = { 161 "RAID-0", 162 "RAID-4", 163 "RAID-1(1+0)", 164 "RAID-5", 165 "RAID-5+1", 166 "RAID-ADG", 167 "RAID-1(ADM)", 168 }; 169 170 static char *pqi_raid_level_to_string(u8 raid_level) 171 { 172 if (raid_level < ARRAY_SIZE(raid_levels)) 173 return raid_levels[raid_level]; 174 175 return "RAID UNKNOWN"; 176 } 177 178 #define SA_RAID_0 0 179 #define SA_RAID_4 1 180 #define SA_RAID_1 2 /* also used for RAID 10 */ 181 #define SA_RAID_5 3 /* also used for RAID 50 */ 182 #define SA_RAID_51 4 183 #define SA_RAID_6 5 /* also used for RAID 60 */ 184 #define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 185 #define SA_RAID_MAX SA_RAID_ADM 186 #define SA_RAID_UNKNOWN 0xff 187 188 static inline void pqi_scsi_done(struct scsi_cmnd *scmd) 189 { 190 pqi_prep_for_scsi_done(scmd); 191 scmd->scsi_done(scmd); 192 } 193 194 static inline void pqi_disable_write_same(struct scsi_device *sdev) 195 { 196 sdev->no_write_same = 1; 197 } 198 199 static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2) 200 { 201 return memcmp(scsi3addr1, scsi3addr2, 8) == 0; 202 } 203 204 static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device) 205 { 206 return !device->is_physical_device; 207 } 208 209 static inline bool pqi_is_external_raid_addr(u8 *scsi3addr) 210 { 211 return scsi3addr[2] != 0; 212 } 213 214 static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info) 215 { 216 return !ctrl_info->controller_online; 217 } 218 219 static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info) 220 { 221 if (ctrl_info->controller_online) 222 if (!sis_is_firmware_running(ctrl_info)) 223 pqi_take_ctrl_offline(ctrl_info); 224 } 225 226 static inline bool pqi_is_hba_lunid(u8 *scsi3addr) 227 { 228 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID); 229 } 230 231 static inline enum pqi_ctrl_mode pqi_get_ctrl_mode( 232 struct pqi_ctrl_info *ctrl_info) 233 { 234 return sis_read_driver_scratch(ctrl_info); 235 } 236 237 static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info, 238 enum pqi_ctrl_mode mode) 239 { 240 sis_write_driver_scratch(ctrl_info, mode); 241 } 242 243 static inline void pqi_ctrl_block_device_reset(struct pqi_ctrl_info *ctrl_info) 244 { 245 ctrl_info->block_device_reset = true; 246 } 247 248 static inline bool pqi_device_reset_blocked(struct pqi_ctrl_info *ctrl_info) 249 { 250 return ctrl_info->block_device_reset; 251 } 252 253 static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info) 254 { 255 return ctrl_info->block_requests; 256 } 257 258 static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info) 259 { 260 ctrl_info->block_requests = true; 261 scsi_block_requests(ctrl_info->scsi_host); 262 } 263 264 static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info) 265 { 266 ctrl_info->block_requests = false; 267 wake_up_all(&ctrl_info->block_requests_wait); 268 pqi_retry_raid_bypass_requests(ctrl_info); 269 scsi_unblock_requests(ctrl_info->scsi_host); 270 } 271 272 static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info, 273 unsigned long timeout_msecs) 274 { 275 unsigned long remaining_msecs; 276 277 if (!pqi_ctrl_blocked(ctrl_info)) 278 return timeout_msecs; 279 280 atomic_inc(&ctrl_info->num_blocked_threads); 281 282 if (timeout_msecs == NO_TIMEOUT) { 283 wait_event(ctrl_info->block_requests_wait, 284 !pqi_ctrl_blocked(ctrl_info)); 285 remaining_msecs = timeout_msecs; 286 } else { 287 unsigned long remaining_jiffies; 288 289 remaining_jiffies = 290 wait_event_timeout(ctrl_info->block_requests_wait, 291 !pqi_ctrl_blocked(ctrl_info), 292 msecs_to_jiffies(timeout_msecs)); 293 remaining_msecs = jiffies_to_msecs(remaining_jiffies); 294 } 295 296 atomic_dec(&ctrl_info->num_blocked_threads); 297 298 return remaining_msecs; 299 } 300 301 static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info) 302 { 303 while (atomic_read(&ctrl_info->num_busy_threads) > 304 atomic_read(&ctrl_info->num_blocked_threads)) 305 usleep_range(1000, 2000); 306 } 307 308 static inline bool pqi_device_offline(struct pqi_scsi_dev *device) 309 { 310 return device->device_offline; 311 } 312 313 static inline void pqi_device_reset_start(struct pqi_scsi_dev *device) 314 { 315 device->in_reset = true; 316 } 317 318 static inline void pqi_device_reset_done(struct pqi_scsi_dev *device) 319 { 320 device->in_reset = false; 321 } 322 323 static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device) 324 { 325 return device->in_reset; 326 } 327 328 static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info) 329 { 330 ctrl_info->in_ofa = true; 331 } 332 333 static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info) 334 { 335 ctrl_info->in_ofa = false; 336 } 337 338 static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info) 339 { 340 return ctrl_info->in_ofa; 341 } 342 343 static inline void pqi_device_remove_start(struct pqi_scsi_dev *device) 344 { 345 device->in_remove = true; 346 } 347 348 static inline bool pqi_device_in_remove(struct pqi_ctrl_info *ctrl_info, 349 struct pqi_scsi_dev *device) 350 { 351 return device->in_remove && !ctrl_info->in_shutdown; 352 } 353 354 static inline void pqi_ctrl_shutdown_start(struct pqi_ctrl_info *ctrl_info) 355 { 356 ctrl_info->in_shutdown = true; 357 } 358 359 static inline bool pqi_ctrl_in_shutdown(struct pqi_ctrl_info *ctrl_info) 360 { 361 return ctrl_info->in_shutdown; 362 } 363 364 static inline void pqi_schedule_rescan_worker_with_delay( 365 struct pqi_ctrl_info *ctrl_info, unsigned long delay) 366 { 367 if (pqi_ctrl_offline(ctrl_info)) 368 return; 369 if (pqi_ctrl_in_ofa(ctrl_info)) 370 return; 371 372 schedule_delayed_work(&ctrl_info->rescan_work, delay); 373 } 374 375 static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info) 376 { 377 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0); 378 } 379 380 #define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ) 381 382 static inline void pqi_schedule_rescan_worker_delayed( 383 struct pqi_ctrl_info *ctrl_info) 384 { 385 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY); 386 } 387 388 static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info) 389 { 390 cancel_delayed_work_sync(&ctrl_info->rescan_work); 391 } 392 393 static inline void pqi_cancel_event_worker(struct pqi_ctrl_info *ctrl_info) 394 { 395 cancel_work_sync(&ctrl_info->event_work); 396 } 397 398 static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info) 399 { 400 if (!ctrl_info->heartbeat_counter) 401 return 0; 402 403 return readl(ctrl_info->heartbeat_counter); 404 } 405 406 static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info) 407 { 408 if (!ctrl_info->soft_reset_status) 409 return 0; 410 411 return readb(ctrl_info->soft_reset_status); 412 } 413 414 static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info, 415 u8 clear) 416 { 417 u8 status; 418 419 if (!ctrl_info->soft_reset_status) 420 return; 421 422 status = pqi_read_soft_reset_status(ctrl_info); 423 status &= ~clear; 424 writeb(status, ctrl_info->soft_reset_status); 425 } 426 427 static int pqi_map_single(struct pci_dev *pci_dev, 428 struct pqi_sg_descriptor *sg_descriptor, void *buffer, 429 size_t buffer_length, enum dma_data_direction data_direction) 430 { 431 dma_addr_t bus_address; 432 433 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE) 434 return 0; 435 436 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length, 437 data_direction); 438 if (dma_mapping_error(&pci_dev->dev, bus_address)) 439 return -ENOMEM; 440 441 put_unaligned_le64((u64)bus_address, &sg_descriptor->address); 442 put_unaligned_le32(buffer_length, &sg_descriptor->length); 443 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 444 445 return 0; 446 } 447 448 static void pqi_pci_unmap(struct pci_dev *pci_dev, 449 struct pqi_sg_descriptor *descriptors, int num_descriptors, 450 enum dma_data_direction data_direction) 451 { 452 int i; 453 454 if (data_direction == DMA_NONE) 455 return; 456 457 for (i = 0; i < num_descriptors; i++) 458 dma_unmap_single(&pci_dev->dev, 459 (dma_addr_t)get_unaligned_le64(&descriptors[i].address), 460 get_unaligned_le32(&descriptors[i].length), 461 data_direction); 462 } 463 464 static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info, 465 struct pqi_raid_path_request *request, u8 cmd, 466 u8 *scsi3addr, void *buffer, size_t buffer_length, 467 u16 vpd_page, enum dma_data_direction *dir) 468 { 469 u8 *cdb; 470 size_t cdb_length = buffer_length; 471 472 memset(request, 0, sizeof(*request)); 473 474 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 475 put_unaligned_le16(offsetof(struct pqi_raid_path_request, 476 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH, 477 &request->header.iu_length); 478 put_unaligned_le32(buffer_length, &request->buffer_length); 479 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number)); 480 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 481 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 482 483 cdb = request->cdb; 484 485 switch (cmd) { 486 case INQUIRY: 487 request->data_direction = SOP_READ_FLAG; 488 cdb[0] = INQUIRY; 489 if (vpd_page & VPD_PAGE) { 490 cdb[1] = 0x1; 491 cdb[2] = (u8)vpd_page; 492 } 493 cdb[4] = (u8)cdb_length; 494 break; 495 case CISS_REPORT_LOG: 496 case CISS_REPORT_PHYS: 497 request->data_direction = SOP_READ_FLAG; 498 cdb[0] = cmd; 499 if (cmd == CISS_REPORT_PHYS) 500 cdb[1] = CISS_REPORT_PHYS_FLAG_OTHER; 501 else 502 cdb[1] = CISS_REPORT_LOG_FLAG_UNIQUE_LUN_ID; 503 put_unaligned_be32(cdb_length, &cdb[6]); 504 break; 505 case CISS_GET_RAID_MAP: 506 request->data_direction = SOP_READ_FLAG; 507 cdb[0] = CISS_READ; 508 cdb[1] = CISS_GET_RAID_MAP; 509 put_unaligned_be32(cdb_length, &cdb[6]); 510 break; 511 case SA_FLUSH_CACHE: 512 request->data_direction = SOP_WRITE_FLAG; 513 cdb[0] = BMIC_WRITE; 514 cdb[6] = BMIC_FLUSH_CACHE; 515 put_unaligned_be16(cdb_length, &cdb[7]); 516 break; 517 case BMIC_SENSE_DIAG_OPTIONS: 518 cdb_length = 0; 519 fallthrough; 520 case BMIC_IDENTIFY_CONTROLLER: 521 case BMIC_IDENTIFY_PHYSICAL_DEVICE: 522 case BMIC_SENSE_SUBSYSTEM_INFORMATION: 523 request->data_direction = SOP_READ_FLAG; 524 cdb[0] = BMIC_READ; 525 cdb[6] = cmd; 526 put_unaligned_be16(cdb_length, &cdb[7]); 527 break; 528 case BMIC_SET_DIAG_OPTIONS: 529 cdb_length = 0; 530 fallthrough; 531 case BMIC_WRITE_HOST_WELLNESS: 532 request->data_direction = SOP_WRITE_FLAG; 533 cdb[0] = BMIC_WRITE; 534 cdb[6] = cmd; 535 put_unaligned_be16(cdb_length, &cdb[7]); 536 break; 537 case BMIC_CSMI_PASSTHRU: 538 request->data_direction = SOP_BIDIRECTIONAL; 539 cdb[0] = BMIC_WRITE; 540 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU; 541 cdb[6] = cmd; 542 put_unaligned_be16(cdb_length, &cdb[7]); 543 break; 544 default: 545 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n", cmd); 546 break; 547 } 548 549 switch (request->data_direction) { 550 case SOP_READ_FLAG: 551 *dir = DMA_FROM_DEVICE; 552 break; 553 case SOP_WRITE_FLAG: 554 *dir = DMA_TO_DEVICE; 555 break; 556 case SOP_NO_DIRECTION_FLAG: 557 *dir = DMA_NONE; 558 break; 559 default: 560 *dir = DMA_BIDIRECTIONAL; 561 break; 562 } 563 564 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0], 565 buffer, buffer_length, *dir); 566 } 567 568 static inline void pqi_reinit_io_request(struct pqi_io_request *io_request) 569 { 570 io_request->scmd = NULL; 571 io_request->status = 0; 572 io_request->error_info = NULL; 573 io_request->raid_bypass = false; 574 } 575 576 static struct pqi_io_request *pqi_alloc_io_request( 577 struct pqi_ctrl_info *ctrl_info) 578 { 579 struct pqi_io_request *io_request; 580 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */ 581 582 while (1) { 583 io_request = &ctrl_info->io_request_pool[i]; 584 if (atomic_inc_return(&io_request->refcount) == 1) 585 break; 586 atomic_dec(&io_request->refcount); 587 i = (i + 1) % ctrl_info->max_io_slots; 588 } 589 590 /* benignly racy */ 591 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots; 592 593 pqi_reinit_io_request(io_request); 594 595 return io_request; 596 } 597 598 static void pqi_free_io_request(struct pqi_io_request *io_request) 599 { 600 atomic_dec(&io_request->refcount); 601 } 602 603 static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd, 604 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page, 605 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) 606 { 607 int rc; 608 struct pqi_raid_path_request request; 609 enum dma_data_direction dir; 610 611 rc = pqi_build_raid_path_request(ctrl_info, &request, 612 cmd, scsi3addr, buffer, 613 buffer_length, vpd_page, &dir); 614 if (rc) 615 return rc; 616 617 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 618 error_info, timeout_msecs); 619 620 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); 621 622 return rc; 623 } 624 625 /* helper functions for pqi_send_scsi_raid_request */ 626 627 static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info, 628 u8 cmd, void *buffer, size_t buffer_length) 629 { 630 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID, 631 buffer, buffer_length, 0, NULL, NO_TIMEOUT); 632 } 633 634 static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info, 635 u8 cmd, void *buffer, size_t buffer_length, 636 struct pqi_raid_error_info *error_info) 637 { 638 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID, 639 buffer, buffer_length, 0, error_info, NO_TIMEOUT); 640 } 641 642 static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info, 643 struct bmic_identify_controller *buffer) 644 { 645 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER, 646 buffer, sizeof(*buffer)); 647 } 648 649 static inline int pqi_sense_subsystem_info(struct pqi_ctrl_info *ctrl_info, 650 struct bmic_sense_subsystem_info *sense_info) 651 { 652 return pqi_send_ctrl_raid_request(ctrl_info, 653 BMIC_SENSE_SUBSYSTEM_INFORMATION, sense_info, 654 sizeof(*sense_info)); 655 } 656 657 static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info, 658 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length) 659 { 660 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr, 661 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT); 662 } 663 664 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info, 665 struct pqi_scsi_dev *device, 666 struct bmic_identify_physical_device *buffer, size_t buffer_length) 667 { 668 int rc; 669 enum dma_data_direction dir; 670 u16 bmic_device_index; 671 struct pqi_raid_path_request request; 672 673 rc = pqi_build_raid_path_request(ctrl_info, &request, 674 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer, 675 buffer_length, 0, &dir); 676 if (rc) 677 return rc; 678 679 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr); 680 request.cdb[2] = (u8)bmic_device_index; 681 request.cdb[9] = (u8)(bmic_device_index >> 8); 682 683 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 684 0, NULL, NO_TIMEOUT); 685 686 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); 687 688 return rc; 689 } 690 691 static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info, 692 enum bmic_flush_cache_shutdown_event shutdown_event) 693 { 694 int rc; 695 struct bmic_flush_cache *flush_cache; 696 697 /* 698 * Don't bother trying to flush the cache if the controller is 699 * locked up. 700 */ 701 if (pqi_ctrl_offline(ctrl_info)) 702 return -ENXIO; 703 704 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL); 705 if (!flush_cache) 706 return -ENOMEM; 707 708 flush_cache->shutdown_event = shutdown_event; 709 710 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache, 711 sizeof(*flush_cache)); 712 713 kfree(flush_cache); 714 715 return rc; 716 } 717 718 int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info, 719 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length, 720 struct pqi_raid_error_info *error_info) 721 { 722 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU, 723 buffer, buffer_length, error_info); 724 } 725 726 #define PQI_FETCH_PTRAID_DATA (1 << 31) 727 728 static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info) 729 { 730 int rc; 731 struct bmic_diag_options *diag; 732 733 diag = kzalloc(sizeof(*diag), GFP_KERNEL); 734 if (!diag) 735 return -ENOMEM; 736 737 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS, 738 diag, sizeof(*diag)); 739 if (rc) 740 goto out; 741 742 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA); 743 744 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS, diag, 745 sizeof(*diag)); 746 747 out: 748 kfree(diag); 749 750 return rc; 751 } 752 753 static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info, 754 void *buffer, size_t buffer_length) 755 { 756 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS, 757 buffer, buffer_length); 758 } 759 760 #pragma pack(1) 761 762 struct bmic_host_wellness_driver_version { 763 u8 start_tag[4]; 764 u8 driver_version_tag[2]; 765 __le16 driver_version_length; 766 char driver_version[32]; 767 u8 dont_write_tag[2]; 768 u8 end_tag[2]; 769 }; 770 771 #pragma pack() 772 773 static int pqi_write_driver_version_to_host_wellness( 774 struct pqi_ctrl_info *ctrl_info) 775 { 776 int rc; 777 struct bmic_host_wellness_driver_version *buffer; 778 size_t buffer_length; 779 780 buffer_length = sizeof(*buffer); 781 782 buffer = kmalloc(buffer_length, GFP_KERNEL); 783 if (!buffer) 784 return -ENOMEM; 785 786 buffer->start_tag[0] = '<'; 787 buffer->start_tag[1] = 'H'; 788 buffer->start_tag[2] = 'W'; 789 buffer->start_tag[3] = '>'; 790 buffer->driver_version_tag[0] = 'D'; 791 buffer->driver_version_tag[1] = 'V'; 792 put_unaligned_le16(sizeof(buffer->driver_version), 793 &buffer->driver_version_length); 794 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION, 795 sizeof(buffer->driver_version) - 1); 796 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0'; 797 buffer->dont_write_tag[0] = 'D'; 798 buffer->dont_write_tag[1] = 'W'; 799 buffer->end_tag[0] = 'Z'; 800 buffer->end_tag[1] = 'Z'; 801 802 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length); 803 804 kfree(buffer); 805 806 return rc; 807 } 808 809 #pragma pack(1) 810 811 struct bmic_host_wellness_time { 812 u8 start_tag[4]; 813 u8 time_tag[2]; 814 __le16 time_length; 815 u8 time[8]; 816 u8 dont_write_tag[2]; 817 u8 end_tag[2]; 818 }; 819 820 #pragma pack() 821 822 static int pqi_write_current_time_to_host_wellness( 823 struct pqi_ctrl_info *ctrl_info) 824 { 825 int rc; 826 struct bmic_host_wellness_time *buffer; 827 size_t buffer_length; 828 time64_t local_time; 829 unsigned int year; 830 struct tm tm; 831 832 buffer_length = sizeof(*buffer); 833 834 buffer = kmalloc(buffer_length, GFP_KERNEL); 835 if (!buffer) 836 return -ENOMEM; 837 838 buffer->start_tag[0] = '<'; 839 buffer->start_tag[1] = 'H'; 840 buffer->start_tag[2] = 'W'; 841 buffer->start_tag[3] = '>'; 842 buffer->time_tag[0] = 'T'; 843 buffer->time_tag[1] = 'D'; 844 put_unaligned_le16(sizeof(buffer->time), 845 &buffer->time_length); 846 847 local_time = ktime_get_real_seconds(); 848 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm); 849 year = tm.tm_year + 1900; 850 851 buffer->time[0] = bin2bcd(tm.tm_hour); 852 buffer->time[1] = bin2bcd(tm.tm_min); 853 buffer->time[2] = bin2bcd(tm.tm_sec); 854 buffer->time[3] = 0; 855 buffer->time[4] = bin2bcd(tm.tm_mon + 1); 856 buffer->time[5] = bin2bcd(tm.tm_mday); 857 buffer->time[6] = bin2bcd(year / 100); 858 buffer->time[7] = bin2bcd(year % 100); 859 860 buffer->dont_write_tag[0] = 'D'; 861 buffer->dont_write_tag[1] = 'W'; 862 buffer->end_tag[0] = 'Z'; 863 buffer->end_tag[1] = 'Z'; 864 865 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length); 866 867 kfree(buffer); 868 869 return rc; 870 } 871 872 #define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ) 873 874 static void pqi_update_time_worker(struct work_struct *work) 875 { 876 int rc; 877 struct pqi_ctrl_info *ctrl_info; 878 879 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, 880 update_time_work); 881 882 if (pqi_ctrl_offline(ctrl_info)) 883 return; 884 885 rc = pqi_write_current_time_to_host_wellness(ctrl_info); 886 if (rc) 887 dev_warn(&ctrl_info->pci_dev->dev, 888 "error updating time on controller\n"); 889 890 schedule_delayed_work(&ctrl_info->update_time_work, 891 PQI_UPDATE_TIME_WORK_INTERVAL); 892 } 893 894 static inline void pqi_schedule_update_time_worker( 895 struct pqi_ctrl_info *ctrl_info) 896 { 897 schedule_delayed_work(&ctrl_info->update_time_work, 0); 898 } 899 900 static inline void pqi_cancel_update_time_worker( 901 struct pqi_ctrl_info *ctrl_info) 902 { 903 cancel_delayed_work_sync(&ctrl_info->update_time_work); 904 } 905 906 static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, 907 void *buffer, size_t buffer_length) 908 { 909 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer, 910 buffer_length); 911 } 912 913 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, 914 void **buffer) 915 { 916 int rc; 917 size_t lun_list_length; 918 size_t lun_data_length; 919 size_t new_lun_list_length; 920 void *lun_data = NULL; 921 struct report_lun_header *report_lun_header; 922 923 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL); 924 if (!report_lun_header) { 925 rc = -ENOMEM; 926 goto out; 927 } 928 929 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header, 930 sizeof(*report_lun_header)); 931 if (rc) 932 goto out; 933 934 lun_list_length = get_unaligned_be32(&report_lun_header->list_length); 935 936 again: 937 lun_data_length = sizeof(struct report_lun_header) + lun_list_length; 938 939 lun_data = kmalloc(lun_data_length, GFP_KERNEL); 940 if (!lun_data) { 941 rc = -ENOMEM; 942 goto out; 943 } 944 945 if (lun_list_length == 0) { 946 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header)); 947 goto out; 948 } 949 950 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length); 951 if (rc) 952 goto out; 953 954 new_lun_list_length = get_unaligned_be32( 955 &((struct report_lun_header *)lun_data)->list_length); 956 957 if (new_lun_list_length > lun_list_length) { 958 lun_list_length = new_lun_list_length; 959 kfree(lun_data); 960 goto again; 961 } 962 963 out: 964 kfree(report_lun_header); 965 966 if (rc) { 967 kfree(lun_data); 968 lun_data = NULL; 969 } 970 971 *buffer = lun_data; 972 973 return rc; 974 } 975 976 static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info, 977 void **buffer) 978 { 979 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS, 980 buffer); 981 } 982 983 static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info, 984 void **buffer) 985 { 986 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer); 987 } 988 989 static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info, 990 struct report_phys_lun_extended **physdev_list, 991 struct report_log_lun_extended **logdev_list) 992 { 993 int rc; 994 size_t logdev_list_length; 995 size_t logdev_data_length; 996 struct report_log_lun_extended *internal_logdev_list; 997 struct report_log_lun_extended *logdev_data; 998 struct report_lun_header report_lun_header; 999 1000 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list); 1001 if (rc) 1002 dev_err(&ctrl_info->pci_dev->dev, 1003 "report physical LUNs failed\n"); 1004 1005 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list); 1006 if (rc) 1007 dev_err(&ctrl_info->pci_dev->dev, 1008 "report logical LUNs failed\n"); 1009 1010 /* 1011 * Tack the controller itself onto the end of the logical device list. 1012 */ 1013 1014 logdev_data = *logdev_list; 1015 1016 if (logdev_data) { 1017 logdev_list_length = 1018 get_unaligned_be32(&logdev_data->header.list_length); 1019 } else { 1020 memset(&report_lun_header, 0, sizeof(report_lun_header)); 1021 logdev_data = 1022 (struct report_log_lun_extended *)&report_lun_header; 1023 logdev_list_length = 0; 1024 } 1025 1026 logdev_data_length = sizeof(struct report_lun_header) + 1027 logdev_list_length; 1028 1029 internal_logdev_list = kmalloc(logdev_data_length + 1030 sizeof(struct report_log_lun_extended), GFP_KERNEL); 1031 if (!internal_logdev_list) { 1032 kfree(*logdev_list); 1033 *logdev_list = NULL; 1034 return -ENOMEM; 1035 } 1036 1037 memcpy(internal_logdev_list, logdev_data, logdev_data_length); 1038 memset((u8 *)internal_logdev_list + logdev_data_length, 0, 1039 sizeof(struct report_log_lun_extended_entry)); 1040 put_unaligned_be32(logdev_list_length + 1041 sizeof(struct report_log_lun_extended_entry), 1042 &internal_logdev_list->header.list_length); 1043 1044 kfree(*logdev_list); 1045 *logdev_list = internal_logdev_list; 1046 1047 return 0; 1048 } 1049 1050 static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device, 1051 int bus, int target, int lun) 1052 { 1053 device->bus = bus; 1054 device->target = target; 1055 device->lun = lun; 1056 } 1057 1058 static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device) 1059 { 1060 u8 *scsi3addr; 1061 u32 lunid; 1062 int bus; 1063 int target; 1064 int lun; 1065 1066 scsi3addr = device->scsi3addr; 1067 lunid = get_unaligned_le32(scsi3addr); 1068 1069 if (pqi_is_hba_lunid(scsi3addr)) { 1070 /* The specified device is the controller. */ 1071 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff); 1072 device->target_lun_valid = true; 1073 return; 1074 } 1075 1076 if (pqi_is_logical_device(device)) { 1077 if (device->is_external_raid_device) { 1078 bus = PQI_EXTERNAL_RAID_VOLUME_BUS; 1079 target = (lunid >> 16) & 0x3fff; 1080 lun = lunid & 0xff; 1081 } else { 1082 bus = PQI_RAID_VOLUME_BUS; 1083 target = 0; 1084 lun = lunid & 0x3fff; 1085 } 1086 pqi_set_bus_target_lun(device, bus, target, lun); 1087 device->target_lun_valid = true; 1088 return; 1089 } 1090 1091 /* 1092 * Defer target and LUN assignment for non-controller physical devices 1093 * because the SAS transport layer will make these assignments later. 1094 */ 1095 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0); 1096 } 1097 1098 static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info, 1099 struct pqi_scsi_dev *device) 1100 { 1101 int rc; 1102 u8 raid_level; 1103 u8 *buffer; 1104 1105 raid_level = SA_RAID_UNKNOWN; 1106 1107 buffer = kmalloc(64, GFP_KERNEL); 1108 if (buffer) { 1109 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1110 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64); 1111 if (rc == 0) { 1112 raid_level = buffer[8]; 1113 if (raid_level > SA_RAID_MAX) 1114 raid_level = SA_RAID_UNKNOWN; 1115 } 1116 kfree(buffer); 1117 } 1118 1119 device->raid_level = raid_level; 1120 } 1121 1122 static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info, 1123 struct pqi_scsi_dev *device, struct raid_map *raid_map) 1124 { 1125 char *err_msg; 1126 u32 raid_map_size; 1127 u32 r5or6_blocks_per_row; 1128 1129 raid_map_size = get_unaligned_le32(&raid_map->structure_size); 1130 1131 if (raid_map_size < offsetof(struct raid_map, disk_data)) { 1132 err_msg = "RAID map too small"; 1133 goto bad_raid_map; 1134 } 1135 1136 if (device->raid_level == SA_RAID_1) { 1137 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) { 1138 err_msg = "invalid RAID-1 map"; 1139 goto bad_raid_map; 1140 } 1141 } else if (device->raid_level == SA_RAID_ADM) { 1142 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) { 1143 err_msg = "invalid RAID-1(ADM) map"; 1144 goto bad_raid_map; 1145 } 1146 } else if ((device->raid_level == SA_RAID_5 || 1147 device->raid_level == SA_RAID_6) && 1148 get_unaligned_le16(&raid_map->layout_map_count) > 1) { 1149 /* RAID 50/60 */ 1150 r5or6_blocks_per_row = 1151 get_unaligned_le16(&raid_map->strip_size) * 1152 get_unaligned_le16(&raid_map->data_disks_per_row); 1153 if (r5or6_blocks_per_row == 0) { 1154 err_msg = "invalid RAID-5 or RAID-6 map"; 1155 goto bad_raid_map; 1156 } 1157 } 1158 1159 return 0; 1160 1161 bad_raid_map: 1162 dev_warn(&ctrl_info->pci_dev->dev, 1163 "logical device %08x%08x %s\n", 1164 *((u32 *)&device->scsi3addr), 1165 *((u32 *)&device->scsi3addr[4]), err_msg); 1166 1167 return -EINVAL; 1168 } 1169 1170 static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info, 1171 struct pqi_scsi_dev *device) 1172 { 1173 int rc; 1174 u32 raid_map_size; 1175 struct raid_map *raid_map; 1176 1177 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL); 1178 if (!raid_map) 1179 return -ENOMEM; 1180 1181 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, 1182 device->scsi3addr, raid_map, sizeof(*raid_map), 1183 0, NULL, NO_TIMEOUT); 1184 1185 if (rc) 1186 goto error; 1187 1188 raid_map_size = get_unaligned_le32(&raid_map->structure_size); 1189 1190 if (raid_map_size > sizeof(*raid_map)) { 1191 1192 kfree(raid_map); 1193 1194 raid_map = kmalloc(raid_map_size, GFP_KERNEL); 1195 if (!raid_map) 1196 return -ENOMEM; 1197 1198 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, 1199 device->scsi3addr, raid_map, raid_map_size, 1200 0, NULL, NO_TIMEOUT); 1201 if (rc) 1202 goto error; 1203 1204 if (get_unaligned_le32(&raid_map->structure_size) 1205 != raid_map_size) { 1206 dev_warn(&ctrl_info->pci_dev->dev, 1207 "Requested %d bytes, received %d bytes", 1208 raid_map_size, 1209 get_unaligned_le32(&raid_map->structure_size)); 1210 goto error; 1211 } 1212 } 1213 1214 rc = pqi_validate_raid_map(ctrl_info, device, raid_map); 1215 if (rc) 1216 goto error; 1217 1218 device->raid_map = raid_map; 1219 1220 return 0; 1221 1222 error: 1223 kfree(raid_map); 1224 1225 return rc; 1226 } 1227 1228 static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info, 1229 struct pqi_scsi_dev *device) 1230 { 1231 int rc; 1232 u8 *buffer; 1233 u8 bypass_status; 1234 1235 buffer = kmalloc(64, GFP_KERNEL); 1236 if (!buffer) 1237 return; 1238 1239 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1240 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64); 1241 if (rc) 1242 goto out; 1243 1244 #define RAID_BYPASS_STATUS 4 1245 #define RAID_BYPASS_CONFIGURED 0x1 1246 #define RAID_BYPASS_ENABLED 0x2 1247 1248 bypass_status = buffer[RAID_BYPASS_STATUS]; 1249 device->raid_bypass_configured = 1250 (bypass_status & RAID_BYPASS_CONFIGURED) != 0; 1251 if (device->raid_bypass_configured && 1252 (bypass_status & RAID_BYPASS_ENABLED) && 1253 pqi_get_raid_map(ctrl_info, device) == 0) 1254 device->raid_bypass_enabled = true; 1255 1256 out: 1257 kfree(buffer); 1258 } 1259 1260 /* 1261 * Use vendor-specific VPD to determine online/offline status of a volume. 1262 */ 1263 1264 static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info, 1265 struct pqi_scsi_dev *device) 1266 { 1267 int rc; 1268 size_t page_length; 1269 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE; 1270 bool volume_offline = true; 1271 u32 volume_flags; 1272 struct ciss_vpd_logical_volume_status *vpd; 1273 1274 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL); 1275 if (!vpd) 1276 goto no_buffer; 1277 1278 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1279 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd)); 1280 if (rc) 1281 goto out; 1282 1283 if (vpd->page_code != CISS_VPD_LV_STATUS) 1284 goto out; 1285 1286 page_length = offsetof(struct ciss_vpd_logical_volume_status, 1287 volume_status) + vpd->page_length; 1288 if (page_length < sizeof(*vpd)) 1289 goto out; 1290 1291 volume_status = vpd->volume_status; 1292 volume_flags = get_unaligned_be32(&vpd->flags); 1293 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0; 1294 1295 out: 1296 kfree(vpd); 1297 no_buffer: 1298 device->volume_status = volume_status; 1299 device->volume_offline = volume_offline; 1300 } 1301 1302 static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info, 1303 struct pqi_scsi_dev *device, 1304 struct bmic_identify_physical_device *id_phys) 1305 { 1306 int rc; 1307 1308 memset(id_phys, 0, sizeof(*id_phys)); 1309 1310 rc = pqi_identify_physical_device(ctrl_info, device, 1311 id_phys, sizeof(*id_phys)); 1312 if (rc) { 1313 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH; 1314 return rc; 1315 } 1316 1317 scsi_sanitize_inquiry_string(&id_phys->model[0], 8); 1318 scsi_sanitize_inquiry_string(&id_phys->model[8], 16); 1319 1320 memcpy(device->vendor, &id_phys->model[0], sizeof(device->vendor)); 1321 memcpy(device->model, &id_phys->model[8], sizeof(device->model)); 1322 1323 device->box_index = id_phys->box_index; 1324 device->phys_box_on_bus = id_phys->phys_box_on_bus; 1325 device->phy_connected_dev_type = id_phys->phy_connected_dev_type[0]; 1326 device->queue_depth = 1327 get_unaligned_le16(&id_phys->current_queue_depth_limit); 1328 device->active_path_index = id_phys->active_path_number; 1329 device->path_map = id_phys->redundant_path_present_map; 1330 memcpy(&device->box, 1331 &id_phys->alternate_paths_phys_box_on_port, 1332 sizeof(device->box)); 1333 memcpy(&device->phys_connector, 1334 &id_phys->alternate_paths_phys_connector, 1335 sizeof(device->phys_connector)); 1336 device->bay = id_phys->phys_bay_in_box; 1337 1338 return 0; 1339 } 1340 1341 static int pqi_get_logical_device_info(struct pqi_ctrl_info *ctrl_info, 1342 struct pqi_scsi_dev *device) 1343 { 1344 int rc; 1345 u8 *buffer; 1346 1347 buffer = kmalloc(64, GFP_KERNEL); 1348 if (!buffer) 1349 return -ENOMEM; 1350 1351 /* Send an inquiry to the device to see what it is. */ 1352 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64); 1353 if (rc) 1354 goto out; 1355 1356 scsi_sanitize_inquiry_string(&buffer[8], 8); 1357 scsi_sanitize_inquiry_string(&buffer[16], 16); 1358 1359 device->devtype = buffer[0] & 0x1f; 1360 memcpy(device->vendor, &buffer[8], sizeof(device->vendor)); 1361 memcpy(device->model, &buffer[16], sizeof(device->model)); 1362 1363 if (device->devtype == TYPE_DISK) { 1364 if (device->is_external_raid_device) { 1365 device->raid_level = SA_RAID_UNKNOWN; 1366 device->volume_status = CISS_LV_OK; 1367 device->volume_offline = false; 1368 } else { 1369 pqi_get_raid_level(ctrl_info, device); 1370 pqi_get_raid_bypass_status(ctrl_info, device); 1371 pqi_get_volume_status(ctrl_info, device); 1372 } 1373 } 1374 1375 out: 1376 kfree(buffer); 1377 1378 return rc; 1379 } 1380 1381 static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info, 1382 struct pqi_scsi_dev *device, 1383 struct bmic_identify_physical_device *id_phys) 1384 { 1385 int rc; 1386 1387 if (device->is_expander_smp_device) 1388 return 0; 1389 1390 if (pqi_is_logical_device(device)) 1391 rc = pqi_get_logical_device_info(ctrl_info, device); 1392 else 1393 rc = pqi_get_physical_device_info(ctrl_info, device, id_phys); 1394 1395 return rc; 1396 } 1397 1398 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info, 1399 struct pqi_scsi_dev *device) 1400 { 1401 char *status; 1402 static const char unknown_state_str[] = 1403 "Volume is in an unknown state (%u)"; 1404 char unknown_state_buffer[sizeof(unknown_state_str) + 10]; 1405 1406 switch (device->volume_status) { 1407 case CISS_LV_OK: 1408 status = "Volume online"; 1409 break; 1410 case CISS_LV_FAILED: 1411 status = "Volume failed"; 1412 break; 1413 case CISS_LV_NOT_CONFIGURED: 1414 status = "Volume not configured"; 1415 break; 1416 case CISS_LV_DEGRADED: 1417 status = "Volume degraded"; 1418 break; 1419 case CISS_LV_READY_FOR_RECOVERY: 1420 status = "Volume ready for recovery operation"; 1421 break; 1422 case CISS_LV_UNDERGOING_RECOVERY: 1423 status = "Volume undergoing recovery"; 1424 break; 1425 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED: 1426 status = "Wrong physical drive was replaced"; 1427 break; 1428 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM: 1429 status = "A physical drive not properly connected"; 1430 break; 1431 case CISS_LV_HARDWARE_OVERHEATING: 1432 status = "Hardware is overheating"; 1433 break; 1434 case CISS_LV_HARDWARE_HAS_OVERHEATED: 1435 status = "Hardware has overheated"; 1436 break; 1437 case CISS_LV_UNDERGOING_EXPANSION: 1438 status = "Volume undergoing expansion"; 1439 break; 1440 case CISS_LV_NOT_AVAILABLE: 1441 status = "Volume waiting for transforming volume"; 1442 break; 1443 case CISS_LV_QUEUED_FOR_EXPANSION: 1444 status = "Volume queued for expansion"; 1445 break; 1446 case CISS_LV_DISABLED_SCSI_ID_CONFLICT: 1447 status = "Volume disabled due to SCSI ID conflict"; 1448 break; 1449 case CISS_LV_EJECTED: 1450 status = "Volume has been ejected"; 1451 break; 1452 case CISS_LV_UNDERGOING_ERASE: 1453 status = "Volume undergoing background erase"; 1454 break; 1455 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD: 1456 status = "Volume ready for predictive spare rebuild"; 1457 break; 1458 case CISS_LV_UNDERGOING_RPI: 1459 status = "Volume undergoing rapid parity initialization"; 1460 break; 1461 case CISS_LV_PENDING_RPI: 1462 status = "Volume queued for rapid parity initialization"; 1463 break; 1464 case CISS_LV_ENCRYPTED_NO_KEY: 1465 status = "Encrypted volume inaccessible - key not present"; 1466 break; 1467 case CISS_LV_UNDERGOING_ENCRYPTION: 1468 status = "Volume undergoing encryption process"; 1469 break; 1470 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING: 1471 status = "Volume undergoing encryption re-keying process"; 1472 break; 1473 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 1474 status = "Volume encrypted but encryption is disabled"; 1475 break; 1476 case CISS_LV_PENDING_ENCRYPTION: 1477 status = "Volume pending migration to encrypted state"; 1478 break; 1479 case CISS_LV_PENDING_ENCRYPTION_REKEYING: 1480 status = "Volume pending encryption rekeying"; 1481 break; 1482 case CISS_LV_NOT_SUPPORTED: 1483 status = "Volume not supported on this controller"; 1484 break; 1485 case CISS_LV_STATUS_UNAVAILABLE: 1486 status = "Volume status not available"; 1487 break; 1488 default: 1489 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer), 1490 unknown_state_str, device->volume_status); 1491 status = unknown_state_buffer; 1492 break; 1493 } 1494 1495 dev_info(&ctrl_info->pci_dev->dev, 1496 "scsi %d:%d:%d:%d %s\n", 1497 ctrl_info->scsi_host->host_no, 1498 device->bus, device->target, device->lun, status); 1499 } 1500 1501 static void pqi_rescan_worker(struct work_struct *work) 1502 { 1503 struct pqi_ctrl_info *ctrl_info; 1504 1505 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, 1506 rescan_work); 1507 1508 pqi_scan_scsi_devices(ctrl_info); 1509 } 1510 1511 static int pqi_add_device(struct pqi_ctrl_info *ctrl_info, 1512 struct pqi_scsi_dev *device) 1513 { 1514 int rc; 1515 1516 if (pqi_is_logical_device(device)) 1517 rc = scsi_add_device(ctrl_info->scsi_host, device->bus, 1518 device->target, device->lun); 1519 else 1520 rc = pqi_add_sas_device(ctrl_info->sas_host, device); 1521 1522 return rc; 1523 } 1524 1525 #define PQI_PENDING_IO_TIMEOUT_SECS 20 1526 1527 static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, 1528 struct pqi_scsi_dev *device) 1529 { 1530 int rc; 1531 1532 pqi_device_remove_start(device); 1533 1534 rc = pqi_device_wait_for_pending_io(ctrl_info, device, PQI_PENDING_IO_TIMEOUT_SECS); 1535 if (rc) 1536 dev_err(&ctrl_info->pci_dev->dev, 1537 "scsi %d:%d:%d:%d removing device with %d outstanding command(s)\n", 1538 ctrl_info->scsi_host->host_no, device->bus, 1539 device->target, device->lun, 1540 atomic_read(&device->scsi_cmds_outstanding)); 1541 1542 if (pqi_is_logical_device(device)) 1543 scsi_remove_device(device->sdev); 1544 else 1545 pqi_remove_sas_device(device); 1546 } 1547 1548 /* Assumes the SCSI device list lock is held. */ 1549 1550 static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info, 1551 int bus, int target, int lun) 1552 { 1553 struct pqi_scsi_dev *device; 1554 1555 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) 1556 if (device->bus == bus && device->target == target && device->lun == lun) 1557 return device; 1558 1559 return NULL; 1560 } 1561 1562 static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1, 1563 struct pqi_scsi_dev *dev2) 1564 { 1565 if (dev1->is_physical_device != dev2->is_physical_device) 1566 return false; 1567 1568 if (dev1->is_physical_device) 1569 return dev1->wwid == dev2->wwid; 1570 1571 return memcmp(dev1->volume_id, dev2->volume_id, 1572 sizeof(dev1->volume_id)) == 0; 1573 } 1574 1575 enum pqi_find_result { 1576 DEVICE_NOT_FOUND, 1577 DEVICE_CHANGED, 1578 DEVICE_SAME, 1579 }; 1580 1581 static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info, 1582 struct pqi_scsi_dev *device_to_find, struct pqi_scsi_dev **matching_device) 1583 { 1584 struct pqi_scsi_dev *device; 1585 1586 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) { 1587 if (pqi_scsi3addr_equal(device_to_find->scsi3addr, device->scsi3addr)) { 1588 *matching_device = device; 1589 if (pqi_device_equal(device_to_find, device)) { 1590 if (device_to_find->volume_offline) 1591 return DEVICE_CHANGED; 1592 return DEVICE_SAME; 1593 } 1594 return DEVICE_CHANGED; 1595 } 1596 } 1597 1598 return DEVICE_NOT_FOUND; 1599 } 1600 1601 static inline const char *pqi_device_type(struct pqi_scsi_dev *device) 1602 { 1603 if (device->is_expander_smp_device) 1604 return "Enclosure SMP "; 1605 1606 return scsi_device_type(device->devtype); 1607 } 1608 1609 #define PQI_DEV_INFO_BUFFER_LENGTH 128 1610 1611 static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info, 1612 char *action, struct pqi_scsi_dev *device) 1613 { 1614 ssize_t count; 1615 char buffer[PQI_DEV_INFO_BUFFER_LENGTH]; 1616 1617 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH, 1618 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus); 1619 1620 if (device->target_lun_valid) 1621 count += scnprintf(buffer + count, 1622 PQI_DEV_INFO_BUFFER_LENGTH - count, 1623 "%d:%d", 1624 device->target, 1625 device->lun); 1626 else 1627 count += scnprintf(buffer + count, 1628 PQI_DEV_INFO_BUFFER_LENGTH - count, 1629 "-:-"); 1630 1631 if (pqi_is_logical_device(device)) 1632 count += scnprintf(buffer + count, 1633 PQI_DEV_INFO_BUFFER_LENGTH - count, 1634 " %08x%08x", 1635 *((u32 *)&device->scsi3addr), 1636 *((u32 *)&device->scsi3addr[4])); 1637 else 1638 count += scnprintf(buffer + count, 1639 PQI_DEV_INFO_BUFFER_LENGTH - count, 1640 " %016llx", device->sas_address); 1641 1642 count += scnprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count, 1643 " %s %.8s %.16s ", 1644 pqi_device_type(device), 1645 device->vendor, 1646 device->model); 1647 1648 if (pqi_is_logical_device(device)) { 1649 if (device->devtype == TYPE_DISK) 1650 count += scnprintf(buffer + count, 1651 PQI_DEV_INFO_BUFFER_LENGTH - count, 1652 "SSDSmartPathCap%c En%c %-12s", 1653 device->raid_bypass_configured ? '+' : '-', 1654 device->raid_bypass_enabled ? '+' : '-', 1655 pqi_raid_level_to_string(device->raid_level)); 1656 } else { 1657 count += scnprintf(buffer + count, 1658 PQI_DEV_INFO_BUFFER_LENGTH - count, 1659 "AIO%c", device->aio_enabled ? '+' : '-'); 1660 if (device->devtype == TYPE_DISK || 1661 device->devtype == TYPE_ZBC) 1662 count += scnprintf(buffer + count, 1663 PQI_DEV_INFO_BUFFER_LENGTH - count, 1664 " qd=%-6d", device->queue_depth); 1665 } 1666 1667 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer); 1668 } 1669 1670 /* Assumes the SCSI device list lock is held. */ 1671 1672 static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device, 1673 struct pqi_scsi_dev *new_device) 1674 { 1675 existing_device->devtype = new_device->devtype; 1676 existing_device->device_type = new_device->device_type; 1677 existing_device->bus = new_device->bus; 1678 if (new_device->target_lun_valid) { 1679 existing_device->target = new_device->target; 1680 existing_device->lun = new_device->lun; 1681 existing_device->target_lun_valid = true; 1682 } 1683 1684 if ((existing_device->volume_status == CISS_LV_QUEUED_FOR_EXPANSION || 1685 existing_device->volume_status == CISS_LV_UNDERGOING_EXPANSION) && 1686 new_device->volume_status == CISS_LV_OK) 1687 existing_device->rescan = true; 1688 1689 /* By definition, the scsi3addr and wwid fields are already the same. */ 1690 1691 existing_device->is_physical_device = new_device->is_physical_device; 1692 existing_device->is_external_raid_device = 1693 new_device->is_external_raid_device; 1694 existing_device->is_expander_smp_device = 1695 new_device->is_expander_smp_device; 1696 existing_device->aio_enabled = new_device->aio_enabled; 1697 memcpy(existing_device->vendor, new_device->vendor, 1698 sizeof(existing_device->vendor)); 1699 memcpy(existing_device->model, new_device->model, 1700 sizeof(existing_device->model)); 1701 existing_device->sas_address = new_device->sas_address; 1702 existing_device->raid_level = new_device->raid_level; 1703 existing_device->queue_depth = new_device->queue_depth; 1704 existing_device->aio_handle = new_device->aio_handle; 1705 existing_device->volume_status = new_device->volume_status; 1706 existing_device->active_path_index = new_device->active_path_index; 1707 existing_device->path_map = new_device->path_map; 1708 existing_device->bay = new_device->bay; 1709 existing_device->box_index = new_device->box_index; 1710 existing_device->phys_box_on_bus = new_device->phys_box_on_bus; 1711 existing_device->phy_connected_dev_type = 1712 new_device->phy_connected_dev_type; 1713 memcpy(existing_device->box, new_device->box, 1714 sizeof(existing_device->box)); 1715 memcpy(existing_device->phys_connector, new_device->phys_connector, 1716 sizeof(existing_device->phys_connector)); 1717 existing_device->offload_to_mirror = 0; 1718 kfree(existing_device->raid_map); 1719 existing_device->raid_map = new_device->raid_map; 1720 existing_device->raid_bypass_configured = 1721 new_device->raid_bypass_configured; 1722 existing_device->raid_bypass_enabled = 1723 new_device->raid_bypass_enabled; 1724 existing_device->device_offline = false; 1725 1726 /* To prevent this from being freed later. */ 1727 new_device->raid_map = NULL; 1728 } 1729 1730 static inline void pqi_free_device(struct pqi_scsi_dev *device) 1731 { 1732 if (device) { 1733 kfree(device->raid_map); 1734 kfree(device); 1735 } 1736 } 1737 1738 /* 1739 * Called when exposing a new device to the OS fails in order to re-adjust 1740 * our internal SCSI device list to match the SCSI ML's view. 1741 */ 1742 1743 static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info, 1744 struct pqi_scsi_dev *device) 1745 { 1746 unsigned long flags; 1747 1748 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1749 list_del(&device->scsi_device_list_entry); 1750 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 1751 1752 /* Allow the device structure to be freed later. */ 1753 device->keep_device = false; 1754 } 1755 1756 static inline bool pqi_is_device_added(struct pqi_scsi_dev *device) 1757 { 1758 if (device->is_expander_smp_device) 1759 return device->sas_port != NULL; 1760 1761 return device->sdev != NULL; 1762 } 1763 1764 static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info, 1765 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices) 1766 { 1767 int rc; 1768 unsigned int i; 1769 unsigned long flags; 1770 enum pqi_find_result find_result; 1771 struct pqi_scsi_dev *device; 1772 struct pqi_scsi_dev *next; 1773 struct pqi_scsi_dev *matching_device; 1774 LIST_HEAD(add_list); 1775 LIST_HEAD(delete_list); 1776 1777 /* 1778 * The idea here is to do as little work as possible while holding the 1779 * spinlock. That's why we go to great pains to defer anything other 1780 * than updating the internal device list until after we release the 1781 * spinlock. 1782 */ 1783 1784 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1785 1786 /* Assume that all devices in the existing list have gone away. */ 1787 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) 1788 device->device_gone = true; 1789 1790 for (i = 0; i < num_new_devices; i++) { 1791 device = new_device_list[i]; 1792 1793 find_result = pqi_scsi_find_entry(ctrl_info, device, 1794 &matching_device); 1795 1796 switch (find_result) { 1797 case DEVICE_SAME: 1798 /* 1799 * The newly found device is already in the existing 1800 * device list. 1801 */ 1802 device->new_device = false; 1803 matching_device->device_gone = false; 1804 pqi_scsi_update_device(matching_device, device); 1805 break; 1806 case DEVICE_NOT_FOUND: 1807 /* 1808 * The newly found device is NOT in the existing device 1809 * list. 1810 */ 1811 device->new_device = true; 1812 break; 1813 case DEVICE_CHANGED: 1814 /* 1815 * The original device has gone away and we need to add 1816 * the new device. 1817 */ 1818 device->new_device = true; 1819 break; 1820 } 1821 } 1822 1823 /* Process all devices that have gone away. */ 1824 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list, 1825 scsi_device_list_entry) { 1826 if (device->device_gone) { 1827 list_del_init(&device->scsi_device_list_entry); 1828 list_add_tail(&device->delete_list_entry, &delete_list); 1829 } 1830 } 1831 1832 /* Process all new devices. */ 1833 for (i = 0; i < num_new_devices; i++) { 1834 device = new_device_list[i]; 1835 if (!device->new_device) 1836 continue; 1837 if (device->volume_offline) 1838 continue; 1839 list_add_tail(&device->scsi_device_list_entry, 1840 &ctrl_info->scsi_device_list); 1841 list_add_tail(&device->add_list_entry, &add_list); 1842 /* To prevent this device structure from being freed later. */ 1843 device->keep_device = true; 1844 } 1845 1846 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 1847 1848 if (pqi_ctrl_in_ofa(ctrl_info)) 1849 pqi_ctrl_ofa_done(ctrl_info); 1850 1851 /* Remove all devices that have gone away. */ 1852 list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) { 1853 if (device->volume_offline) { 1854 pqi_dev_info(ctrl_info, "offline", device); 1855 pqi_show_volume_status(ctrl_info, device); 1856 } 1857 list_del(&device->delete_list_entry); 1858 if (pqi_is_device_added(device)) { 1859 pqi_remove_device(ctrl_info, device); 1860 } else { 1861 if (!device->volume_offline) 1862 pqi_dev_info(ctrl_info, "removed", device); 1863 pqi_free_device(device); 1864 } 1865 } 1866 1867 /* 1868 * Notify the SCSI ML if the queue depth of any existing device has 1869 * changed. 1870 */ 1871 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1872 scsi_device_list_entry) { 1873 if (device->sdev) { 1874 if (device->queue_depth != 1875 device->advertised_queue_depth) { 1876 device->advertised_queue_depth = device->queue_depth; 1877 scsi_change_queue_depth(device->sdev, 1878 device->advertised_queue_depth); 1879 } 1880 if (device->rescan) { 1881 scsi_rescan_device(&device->sdev->sdev_gendev); 1882 device->rescan = false; 1883 } 1884 } 1885 } 1886 1887 /* Expose any new devices. */ 1888 list_for_each_entry_safe(device, next, &add_list, add_list_entry) { 1889 if (!pqi_is_device_added(device)) { 1890 rc = pqi_add_device(ctrl_info, device); 1891 if (rc == 0) { 1892 pqi_dev_info(ctrl_info, "added", device); 1893 } else { 1894 dev_warn(&ctrl_info->pci_dev->dev, 1895 "scsi %d:%d:%d:%d addition failed, device not added\n", 1896 ctrl_info->scsi_host->host_no, 1897 device->bus, device->target, 1898 device->lun); 1899 pqi_fixup_botched_add(ctrl_info, device); 1900 } 1901 } 1902 } 1903 } 1904 1905 static inline bool pqi_is_supported_device(struct pqi_scsi_dev *device) 1906 { 1907 /* 1908 * Only support the HBA controller itself as a RAID 1909 * controller. If it's a RAID controller other than 1910 * the HBA itself (an external RAID controller, for 1911 * example), we don't support it. 1912 */ 1913 if (device->device_type == SA_DEVICE_TYPE_CONTROLLER && 1914 !pqi_is_hba_lunid(device->scsi3addr)) 1915 return false; 1916 1917 return true; 1918 } 1919 1920 static inline bool pqi_skip_device(u8 *scsi3addr) 1921 { 1922 /* Ignore all masked devices. */ 1923 if (MASKED_DEVICE(scsi3addr)) 1924 return true; 1925 1926 return false; 1927 } 1928 1929 static inline void pqi_mask_device(u8 *scsi3addr) 1930 { 1931 scsi3addr[3] |= 0xc0; 1932 } 1933 1934 static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device) 1935 { 1936 switch (device->device_type) { 1937 case SA_DEVICE_TYPE_SAS: 1938 case SA_DEVICE_TYPE_EXPANDER_SMP: 1939 case SA_DEVICE_TYPE_SES: 1940 return true; 1941 } 1942 1943 return false; 1944 } 1945 1946 static inline bool pqi_expose_device(struct pqi_scsi_dev *device) 1947 { 1948 return !device->is_physical_device || 1949 !pqi_skip_device(device->scsi3addr); 1950 } 1951 1952 static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info) 1953 { 1954 int i; 1955 int rc; 1956 LIST_HEAD(new_device_list_head); 1957 struct report_phys_lun_extended *physdev_list = NULL; 1958 struct report_log_lun_extended *logdev_list = NULL; 1959 struct report_phys_lun_extended_entry *phys_lun_ext_entry; 1960 struct report_log_lun_extended_entry *log_lun_ext_entry; 1961 struct bmic_identify_physical_device *id_phys = NULL; 1962 u32 num_physicals; 1963 u32 num_logicals; 1964 struct pqi_scsi_dev **new_device_list = NULL; 1965 struct pqi_scsi_dev *device; 1966 struct pqi_scsi_dev *next; 1967 unsigned int num_new_devices; 1968 unsigned int num_valid_devices; 1969 bool is_physical_device; 1970 u8 *scsi3addr; 1971 unsigned int physical_index; 1972 unsigned int logical_index; 1973 static char *out_of_memory_msg = 1974 "failed to allocate memory, device discovery stopped"; 1975 1976 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list); 1977 if (rc) 1978 goto out; 1979 1980 if (physdev_list) 1981 num_physicals = 1982 get_unaligned_be32(&physdev_list->header.list_length) 1983 / sizeof(physdev_list->lun_entries[0]); 1984 else 1985 num_physicals = 0; 1986 1987 if (logdev_list) 1988 num_logicals = 1989 get_unaligned_be32(&logdev_list->header.list_length) 1990 / sizeof(logdev_list->lun_entries[0]); 1991 else 1992 num_logicals = 0; 1993 1994 if (num_physicals) { 1995 /* 1996 * We need this buffer for calls to pqi_get_physical_disk_info() 1997 * below. We allocate it here instead of inside 1998 * pqi_get_physical_disk_info() because it's a fairly large 1999 * buffer. 2000 */ 2001 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL); 2002 if (!id_phys) { 2003 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2004 out_of_memory_msg); 2005 rc = -ENOMEM; 2006 goto out; 2007 } 2008 2009 if (pqi_hide_vsep) { 2010 for (i = num_physicals - 1; i >= 0; i--) { 2011 phys_lun_ext_entry = 2012 &physdev_list->lun_entries[i]; 2013 if (CISS_GET_DRIVE_NUMBER( 2014 phys_lun_ext_entry->lunid) == 2015 PQI_VSEP_CISS_BTL) { 2016 pqi_mask_device( 2017 phys_lun_ext_entry->lunid); 2018 break; 2019 } 2020 } 2021 } 2022 } 2023 2024 num_new_devices = num_physicals + num_logicals; 2025 2026 new_device_list = kmalloc_array(num_new_devices, 2027 sizeof(*new_device_list), 2028 GFP_KERNEL); 2029 if (!new_device_list) { 2030 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg); 2031 rc = -ENOMEM; 2032 goto out; 2033 } 2034 2035 for (i = 0; i < num_new_devices; i++) { 2036 device = kzalloc(sizeof(*device), GFP_KERNEL); 2037 if (!device) { 2038 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2039 out_of_memory_msg); 2040 rc = -ENOMEM; 2041 goto out; 2042 } 2043 list_add_tail(&device->new_device_list_entry, 2044 &new_device_list_head); 2045 } 2046 2047 device = NULL; 2048 num_valid_devices = 0; 2049 physical_index = 0; 2050 logical_index = 0; 2051 2052 for (i = 0; i < num_new_devices; i++) { 2053 2054 if ((!pqi_expose_ld_first && i < num_physicals) || 2055 (pqi_expose_ld_first && i >= num_logicals)) { 2056 is_physical_device = true; 2057 phys_lun_ext_entry = 2058 &physdev_list->lun_entries[physical_index++]; 2059 log_lun_ext_entry = NULL; 2060 scsi3addr = phys_lun_ext_entry->lunid; 2061 } else { 2062 is_physical_device = false; 2063 phys_lun_ext_entry = NULL; 2064 log_lun_ext_entry = 2065 &logdev_list->lun_entries[logical_index++]; 2066 scsi3addr = log_lun_ext_entry->lunid; 2067 } 2068 2069 if (is_physical_device && pqi_skip_device(scsi3addr)) 2070 continue; 2071 2072 if (device) 2073 device = list_next_entry(device, new_device_list_entry); 2074 else 2075 device = list_first_entry(&new_device_list_head, 2076 struct pqi_scsi_dev, new_device_list_entry); 2077 2078 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr)); 2079 device->is_physical_device = is_physical_device; 2080 if (is_physical_device) { 2081 device->device_type = phys_lun_ext_entry->device_type; 2082 if (device->device_type == SA_DEVICE_TYPE_EXPANDER_SMP) 2083 device->is_expander_smp_device = true; 2084 } else { 2085 device->is_external_raid_device = 2086 pqi_is_external_raid_addr(scsi3addr); 2087 } 2088 2089 if (!pqi_is_supported_device(device)) 2090 continue; 2091 2092 /* Gather information about the device. */ 2093 rc = pqi_get_device_info(ctrl_info, device, id_phys); 2094 if (rc == -ENOMEM) { 2095 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2096 out_of_memory_msg); 2097 goto out; 2098 } 2099 if (rc) { 2100 if (device->is_physical_device) 2101 dev_warn(&ctrl_info->pci_dev->dev, 2102 "obtaining device info failed, skipping physical device %016llx\n", 2103 get_unaligned_be64( 2104 &phys_lun_ext_entry->wwid)); 2105 else 2106 dev_warn(&ctrl_info->pci_dev->dev, 2107 "obtaining device info failed, skipping logical device %08x%08x\n", 2108 *((u32 *)&device->scsi3addr), 2109 *((u32 *)&device->scsi3addr[4])); 2110 rc = 0; 2111 continue; 2112 } 2113 2114 pqi_assign_bus_target_lun(device); 2115 2116 if (device->is_physical_device) { 2117 device->wwid = phys_lun_ext_entry->wwid; 2118 if ((phys_lun_ext_entry->device_flags & 2119 CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED) && 2120 phys_lun_ext_entry->aio_handle) { 2121 device->aio_enabled = true; 2122 device->aio_handle = 2123 phys_lun_ext_entry->aio_handle; 2124 } 2125 } else { 2126 memcpy(device->volume_id, log_lun_ext_entry->volume_id, 2127 sizeof(device->volume_id)); 2128 } 2129 2130 if (pqi_is_device_with_sas_address(device)) 2131 device->sas_address = get_unaligned_be64(&device->wwid); 2132 2133 new_device_list[num_valid_devices++] = device; 2134 } 2135 2136 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices); 2137 2138 out: 2139 list_for_each_entry_safe(device, next, &new_device_list_head, 2140 new_device_list_entry) { 2141 if (device->keep_device) 2142 continue; 2143 list_del(&device->new_device_list_entry); 2144 pqi_free_device(device); 2145 } 2146 2147 kfree(new_device_list); 2148 kfree(physdev_list); 2149 kfree(logdev_list); 2150 kfree(id_phys); 2151 2152 return rc; 2153 } 2154 2155 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info) 2156 { 2157 int rc = 0; 2158 2159 if (pqi_ctrl_offline(ctrl_info)) 2160 return -ENXIO; 2161 2162 if (!mutex_trylock(&ctrl_info->scan_mutex)) { 2163 pqi_schedule_rescan_worker_delayed(ctrl_info); 2164 rc = -EINPROGRESS; 2165 } else { 2166 rc = pqi_update_scsi_devices(ctrl_info); 2167 if (rc) 2168 pqi_schedule_rescan_worker_delayed(ctrl_info); 2169 mutex_unlock(&ctrl_info->scan_mutex); 2170 } 2171 2172 return rc; 2173 } 2174 2175 static void pqi_scan_start(struct Scsi_Host *shost) 2176 { 2177 struct pqi_ctrl_info *ctrl_info; 2178 2179 ctrl_info = shost_to_hba(shost); 2180 if (pqi_ctrl_in_ofa(ctrl_info)) 2181 return; 2182 2183 pqi_scan_scsi_devices(ctrl_info); 2184 } 2185 2186 /* Returns TRUE if scan is finished. */ 2187 2188 static int pqi_scan_finished(struct Scsi_Host *shost, 2189 unsigned long elapsed_time) 2190 { 2191 struct pqi_ctrl_info *ctrl_info; 2192 2193 ctrl_info = shost_priv(shost); 2194 2195 return !mutex_is_locked(&ctrl_info->scan_mutex); 2196 } 2197 2198 static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info) 2199 { 2200 mutex_lock(&ctrl_info->scan_mutex); 2201 mutex_unlock(&ctrl_info->scan_mutex); 2202 } 2203 2204 static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info) 2205 { 2206 mutex_lock(&ctrl_info->lun_reset_mutex); 2207 mutex_unlock(&ctrl_info->lun_reset_mutex); 2208 } 2209 2210 static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info) 2211 { 2212 mutex_lock(&ctrl_info->ofa_mutex); 2213 mutex_unlock(&ctrl_info->ofa_mutex); 2214 } 2215 2216 static inline void pqi_set_encryption_info( 2217 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map, 2218 u64 first_block) 2219 { 2220 u32 volume_blk_size; 2221 2222 /* 2223 * Set the encryption tweak values based on logical block address. 2224 * If the block size is 512, the tweak value is equal to the LBA. 2225 * For other block sizes, tweak value is (LBA * block size) / 512. 2226 */ 2227 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size); 2228 if (volume_blk_size != 512) 2229 first_block = (first_block * volume_blk_size) / 512; 2230 2231 encryption_info->data_encryption_key_index = 2232 get_unaligned_le16(&raid_map->data_encryption_key_index); 2233 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block); 2234 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block); 2235 } 2236 2237 /* 2238 * Attempt to perform RAID bypass mapping for a logical volume I/O. 2239 */ 2240 2241 #define PQI_RAID_BYPASS_INELIGIBLE 1 2242 2243 static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 2244 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 2245 struct pqi_queue_group *queue_group) 2246 { 2247 struct raid_map *raid_map; 2248 bool is_write = false; 2249 u32 map_index; 2250 u64 first_block; 2251 u64 last_block; 2252 u32 block_cnt; 2253 u32 blocks_per_row; 2254 u64 first_row; 2255 u64 last_row; 2256 u32 first_row_offset; 2257 u32 last_row_offset; 2258 u32 first_column; 2259 u32 last_column; 2260 u64 r0_first_row; 2261 u64 r0_last_row; 2262 u32 r5or6_blocks_per_row; 2263 u64 r5or6_first_row; 2264 u64 r5or6_last_row; 2265 u32 r5or6_first_row_offset; 2266 u32 r5or6_last_row_offset; 2267 u32 r5or6_first_column; 2268 u32 r5or6_last_column; 2269 u16 data_disks_per_row; 2270 u32 total_disks_per_row; 2271 u16 layout_map_count; 2272 u32 stripesize; 2273 u16 strip_size; 2274 u32 first_group; 2275 u32 last_group; 2276 u32 current_group; 2277 u32 map_row; 2278 u32 aio_handle; 2279 u64 disk_block; 2280 u32 disk_block_cnt; 2281 u8 cdb[16]; 2282 u8 cdb_length; 2283 int offload_to_mirror; 2284 struct pqi_encryption_info *encryption_info_ptr; 2285 struct pqi_encryption_info encryption_info; 2286 #if BITS_PER_LONG == 32 2287 u64 tmpdiv; 2288 #endif 2289 2290 /* Check for valid opcode, get LBA and block count. */ 2291 switch (scmd->cmnd[0]) { 2292 case WRITE_6: 2293 is_write = true; 2294 fallthrough; 2295 case READ_6: 2296 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) | 2297 (scmd->cmnd[2] << 8) | scmd->cmnd[3]); 2298 block_cnt = (u32)scmd->cmnd[4]; 2299 if (block_cnt == 0) 2300 block_cnt = 256; 2301 break; 2302 case WRITE_10: 2303 is_write = true; 2304 fallthrough; 2305 case READ_10: 2306 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]); 2307 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]); 2308 break; 2309 case WRITE_12: 2310 is_write = true; 2311 fallthrough; 2312 case READ_12: 2313 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]); 2314 block_cnt = get_unaligned_be32(&scmd->cmnd[6]); 2315 break; 2316 case WRITE_16: 2317 is_write = true; 2318 fallthrough; 2319 case READ_16: 2320 first_block = get_unaligned_be64(&scmd->cmnd[2]); 2321 block_cnt = get_unaligned_be32(&scmd->cmnd[10]); 2322 break; 2323 default: 2324 /* Process via normal I/O path. */ 2325 return PQI_RAID_BYPASS_INELIGIBLE; 2326 } 2327 2328 /* Check for write to non-RAID-0. */ 2329 if (is_write && device->raid_level != SA_RAID_0) 2330 return PQI_RAID_BYPASS_INELIGIBLE; 2331 2332 if (unlikely(block_cnt == 0)) 2333 return PQI_RAID_BYPASS_INELIGIBLE; 2334 2335 last_block = first_block + block_cnt - 1; 2336 raid_map = device->raid_map; 2337 2338 /* Check for invalid block or wraparound. */ 2339 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) || 2340 last_block < first_block) 2341 return PQI_RAID_BYPASS_INELIGIBLE; 2342 2343 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row); 2344 strip_size = get_unaligned_le16(&raid_map->strip_size); 2345 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count); 2346 2347 /* Calculate stripe information for the request. */ 2348 blocks_per_row = data_disks_per_row * strip_size; 2349 #if BITS_PER_LONG == 32 2350 tmpdiv = first_block; 2351 do_div(tmpdiv, blocks_per_row); 2352 first_row = tmpdiv; 2353 tmpdiv = last_block; 2354 do_div(tmpdiv, blocks_per_row); 2355 last_row = tmpdiv; 2356 first_row_offset = (u32)(first_block - (first_row * blocks_per_row)); 2357 last_row_offset = (u32)(last_block - (last_row * blocks_per_row)); 2358 tmpdiv = first_row_offset; 2359 do_div(tmpdiv, strip_size); 2360 first_column = tmpdiv; 2361 tmpdiv = last_row_offset; 2362 do_div(tmpdiv, strip_size); 2363 last_column = tmpdiv; 2364 #else 2365 first_row = first_block / blocks_per_row; 2366 last_row = last_block / blocks_per_row; 2367 first_row_offset = (u32)(first_block - (first_row * blocks_per_row)); 2368 last_row_offset = (u32)(last_block - (last_row * blocks_per_row)); 2369 first_column = first_row_offset / strip_size; 2370 last_column = last_row_offset / strip_size; 2371 #endif 2372 2373 /* If this isn't a single row/column then give to the controller. */ 2374 if (first_row != last_row || first_column != last_column) 2375 return PQI_RAID_BYPASS_INELIGIBLE; 2376 2377 /* Proceeding with driver mapping. */ 2378 total_disks_per_row = data_disks_per_row + 2379 get_unaligned_le16(&raid_map->metadata_disks_per_row); 2380 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) % 2381 get_unaligned_le16(&raid_map->row_cnt); 2382 map_index = (map_row * total_disks_per_row) + first_column; 2383 2384 /* RAID 1 */ 2385 if (device->raid_level == SA_RAID_1) { 2386 if (device->offload_to_mirror) 2387 map_index += data_disks_per_row; 2388 device->offload_to_mirror = !device->offload_to_mirror; 2389 } else if (device->raid_level == SA_RAID_ADM) { 2390 /* RAID ADM */ 2391 /* 2392 * Handles N-way mirrors (R1-ADM) and R10 with # of drives 2393 * divisible by 3. 2394 */ 2395 offload_to_mirror = device->offload_to_mirror; 2396 if (offload_to_mirror == 0) { 2397 /* use physical disk in the first mirrored group. */ 2398 map_index %= data_disks_per_row; 2399 } else { 2400 do { 2401 /* 2402 * Determine mirror group that map_index 2403 * indicates. 2404 */ 2405 current_group = map_index / data_disks_per_row; 2406 2407 if (offload_to_mirror != current_group) { 2408 if (current_group < 2409 layout_map_count - 1) { 2410 /* 2411 * Select raid index from 2412 * next group. 2413 */ 2414 map_index += data_disks_per_row; 2415 current_group++; 2416 } else { 2417 /* 2418 * Select raid index from first 2419 * group. 2420 */ 2421 map_index %= data_disks_per_row; 2422 current_group = 0; 2423 } 2424 } 2425 } while (offload_to_mirror != current_group); 2426 } 2427 2428 /* Set mirror group to use next time. */ 2429 offload_to_mirror = 2430 (offload_to_mirror >= layout_map_count - 1) ? 2431 0 : offload_to_mirror + 1; 2432 device->offload_to_mirror = offload_to_mirror; 2433 /* 2434 * Avoid direct use of device->offload_to_mirror within this 2435 * function since multiple threads might simultaneously 2436 * increment it beyond the range of device->layout_map_count -1. 2437 */ 2438 } else if ((device->raid_level == SA_RAID_5 || 2439 device->raid_level == SA_RAID_6) && layout_map_count > 1) { 2440 /* RAID 50/60 */ 2441 /* Verify first and last block are in same RAID group */ 2442 r5or6_blocks_per_row = strip_size * data_disks_per_row; 2443 stripesize = r5or6_blocks_per_row * layout_map_count; 2444 #if BITS_PER_LONG == 32 2445 tmpdiv = first_block; 2446 first_group = do_div(tmpdiv, stripesize); 2447 tmpdiv = first_group; 2448 do_div(tmpdiv, r5or6_blocks_per_row); 2449 first_group = tmpdiv; 2450 tmpdiv = last_block; 2451 last_group = do_div(tmpdiv, stripesize); 2452 tmpdiv = last_group; 2453 do_div(tmpdiv, r5or6_blocks_per_row); 2454 last_group = tmpdiv; 2455 #else 2456 first_group = (first_block % stripesize) / r5or6_blocks_per_row; 2457 last_group = (last_block % stripesize) / r5or6_blocks_per_row; 2458 #endif 2459 if (first_group != last_group) 2460 return PQI_RAID_BYPASS_INELIGIBLE; 2461 2462 /* Verify request is in a single row of RAID 5/6 */ 2463 #if BITS_PER_LONG == 32 2464 tmpdiv = first_block; 2465 do_div(tmpdiv, stripesize); 2466 first_row = r5or6_first_row = r0_first_row = tmpdiv; 2467 tmpdiv = last_block; 2468 do_div(tmpdiv, stripesize); 2469 r5or6_last_row = r0_last_row = tmpdiv; 2470 #else 2471 first_row = r5or6_first_row = r0_first_row = 2472 first_block / stripesize; 2473 r5or6_last_row = r0_last_row = last_block / stripesize; 2474 #endif 2475 if (r5or6_first_row != r5or6_last_row) 2476 return PQI_RAID_BYPASS_INELIGIBLE; 2477 2478 /* Verify request is in a single column */ 2479 #if BITS_PER_LONG == 32 2480 tmpdiv = first_block; 2481 first_row_offset = do_div(tmpdiv, stripesize); 2482 tmpdiv = first_row_offset; 2483 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row); 2484 r5or6_first_row_offset = first_row_offset; 2485 tmpdiv = last_block; 2486 r5or6_last_row_offset = do_div(tmpdiv, stripesize); 2487 tmpdiv = r5or6_last_row_offset; 2488 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row); 2489 tmpdiv = r5or6_first_row_offset; 2490 do_div(tmpdiv, strip_size); 2491 first_column = r5or6_first_column = tmpdiv; 2492 tmpdiv = r5or6_last_row_offset; 2493 do_div(tmpdiv, strip_size); 2494 r5or6_last_column = tmpdiv; 2495 #else 2496 first_row_offset = r5or6_first_row_offset = 2497 (u32)((first_block % stripesize) % 2498 r5or6_blocks_per_row); 2499 2500 r5or6_last_row_offset = 2501 (u32)((last_block % stripesize) % 2502 r5or6_blocks_per_row); 2503 2504 first_column = r5or6_first_row_offset / strip_size; 2505 r5or6_first_column = first_column; 2506 r5or6_last_column = r5or6_last_row_offset / strip_size; 2507 #endif 2508 if (r5or6_first_column != r5or6_last_column) 2509 return PQI_RAID_BYPASS_INELIGIBLE; 2510 2511 /* Request is eligible */ 2512 map_row = 2513 ((u32)(first_row >> raid_map->parity_rotation_shift)) % 2514 get_unaligned_le16(&raid_map->row_cnt); 2515 2516 map_index = (first_group * 2517 (get_unaligned_le16(&raid_map->row_cnt) * 2518 total_disks_per_row)) + 2519 (map_row * total_disks_per_row) + first_column; 2520 } 2521 2522 aio_handle = raid_map->disk_data[map_index].aio_handle; 2523 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) + 2524 first_row * strip_size + 2525 (first_row_offset - first_column * strip_size); 2526 disk_block_cnt = block_cnt; 2527 2528 /* Handle differing logical/physical block sizes. */ 2529 if (raid_map->phys_blk_shift) { 2530 disk_block <<= raid_map->phys_blk_shift; 2531 disk_block_cnt <<= raid_map->phys_blk_shift; 2532 } 2533 2534 if (unlikely(disk_block_cnt > 0xffff)) 2535 return PQI_RAID_BYPASS_INELIGIBLE; 2536 2537 /* Build the new CDB for the physical disk I/O. */ 2538 if (disk_block > 0xffffffff) { 2539 cdb[0] = is_write ? WRITE_16 : READ_16; 2540 cdb[1] = 0; 2541 put_unaligned_be64(disk_block, &cdb[2]); 2542 put_unaligned_be32(disk_block_cnt, &cdb[10]); 2543 cdb[14] = 0; 2544 cdb[15] = 0; 2545 cdb_length = 16; 2546 } else { 2547 cdb[0] = is_write ? WRITE_10 : READ_10; 2548 cdb[1] = 0; 2549 put_unaligned_be32((u32)disk_block, &cdb[2]); 2550 cdb[6] = 0; 2551 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]); 2552 cdb[9] = 0; 2553 cdb_length = 10; 2554 } 2555 2556 if (get_unaligned_le16(&raid_map->flags) & 2557 RAID_MAP_ENCRYPTION_ENABLED) { 2558 pqi_set_encryption_info(&encryption_info, raid_map, 2559 first_block); 2560 encryption_info_ptr = &encryption_info; 2561 } else { 2562 encryption_info_ptr = NULL; 2563 } 2564 2565 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle, 2566 cdb, cdb_length, queue_group, encryption_info_ptr, true); 2567 } 2568 2569 #define PQI_STATUS_IDLE 0x0 2570 2571 #define PQI_CREATE_ADMIN_QUEUE_PAIR 1 2572 #define PQI_DELETE_ADMIN_QUEUE_PAIR 2 2573 2574 #define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0 2575 #define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1 2576 #define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2 2577 #define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3 2578 #define PQI_DEVICE_STATE_ERROR 0x4 2579 2580 #define PQI_MODE_READY_TIMEOUT_SECS 30 2581 #define PQI_MODE_READY_POLL_INTERVAL_MSECS 1 2582 2583 static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info) 2584 { 2585 struct pqi_device_registers __iomem *pqi_registers; 2586 unsigned long timeout; 2587 u64 signature; 2588 u8 status; 2589 2590 pqi_registers = ctrl_info->pqi_registers; 2591 timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies; 2592 2593 while (1) { 2594 signature = readq(&pqi_registers->signature); 2595 if (memcmp(&signature, PQI_DEVICE_SIGNATURE, 2596 sizeof(signature)) == 0) 2597 break; 2598 if (time_after(jiffies, timeout)) { 2599 dev_err(&ctrl_info->pci_dev->dev, 2600 "timed out waiting for PQI signature\n"); 2601 return -ETIMEDOUT; 2602 } 2603 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2604 } 2605 2606 while (1) { 2607 status = readb(&pqi_registers->function_and_status_code); 2608 if (status == PQI_STATUS_IDLE) 2609 break; 2610 if (time_after(jiffies, timeout)) { 2611 dev_err(&ctrl_info->pci_dev->dev, 2612 "timed out waiting for PQI IDLE\n"); 2613 return -ETIMEDOUT; 2614 } 2615 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2616 } 2617 2618 while (1) { 2619 if (readl(&pqi_registers->device_status) == 2620 PQI_DEVICE_STATE_ALL_REGISTERS_READY) 2621 break; 2622 if (time_after(jiffies, timeout)) { 2623 dev_err(&ctrl_info->pci_dev->dev, 2624 "timed out waiting for PQI all registers ready\n"); 2625 return -ETIMEDOUT; 2626 } 2627 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2628 } 2629 2630 return 0; 2631 } 2632 2633 static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request) 2634 { 2635 struct pqi_scsi_dev *device; 2636 2637 device = io_request->scmd->device->hostdata; 2638 device->raid_bypass_enabled = false; 2639 device->aio_enabled = false; 2640 } 2641 2642 static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path) 2643 { 2644 struct pqi_ctrl_info *ctrl_info; 2645 struct pqi_scsi_dev *device; 2646 2647 device = sdev->hostdata; 2648 if (device->device_offline) 2649 return; 2650 2651 device->device_offline = true; 2652 ctrl_info = shost_to_hba(sdev->host); 2653 pqi_schedule_rescan_worker(ctrl_info); 2654 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n", 2655 path, ctrl_info->scsi_host->host_no, device->bus, 2656 device->target, device->lun); 2657 } 2658 2659 static void pqi_process_raid_io_error(struct pqi_io_request *io_request) 2660 { 2661 u8 scsi_status; 2662 u8 host_byte; 2663 struct scsi_cmnd *scmd; 2664 struct pqi_raid_error_info *error_info; 2665 size_t sense_data_length; 2666 int residual_count; 2667 int xfer_count; 2668 struct scsi_sense_hdr sshdr; 2669 2670 scmd = io_request->scmd; 2671 if (!scmd) 2672 return; 2673 2674 error_info = io_request->error_info; 2675 scsi_status = error_info->status; 2676 host_byte = DID_OK; 2677 2678 switch (error_info->data_out_result) { 2679 case PQI_DATA_IN_OUT_GOOD: 2680 break; 2681 case PQI_DATA_IN_OUT_UNDERFLOW: 2682 xfer_count = 2683 get_unaligned_le32(&error_info->data_out_transferred); 2684 residual_count = scsi_bufflen(scmd) - xfer_count; 2685 scsi_set_resid(scmd, residual_count); 2686 if (xfer_count < scmd->underflow) 2687 host_byte = DID_SOFT_ERROR; 2688 break; 2689 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 2690 case PQI_DATA_IN_OUT_ABORTED: 2691 host_byte = DID_ABORT; 2692 break; 2693 case PQI_DATA_IN_OUT_TIMEOUT: 2694 host_byte = DID_TIME_OUT; 2695 break; 2696 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 2697 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 2698 case PQI_DATA_IN_OUT_BUFFER_ERROR: 2699 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 2700 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 2701 case PQI_DATA_IN_OUT_ERROR: 2702 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 2703 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 2704 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 2705 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 2706 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 2707 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 2708 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 2709 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 2710 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 2711 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 2712 default: 2713 host_byte = DID_ERROR; 2714 break; 2715 } 2716 2717 sense_data_length = get_unaligned_le16(&error_info->sense_data_length); 2718 if (sense_data_length == 0) 2719 sense_data_length = 2720 get_unaligned_le16(&error_info->response_data_length); 2721 if (sense_data_length) { 2722 if (sense_data_length > sizeof(error_info->data)) 2723 sense_data_length = sizeof(error_info->data); 2724 2725 if (scsi_status == SAM_STAT_CHECK_CONDITION && 2726 scsi_normalize_sense(error_info->data, 2727 sense_data_length, &sshdr) && 2728 sshdr.sense_key == HARDWARE_ERROR && 2729 sshdr.asc == 0x3e) { 2730 struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host); 2731 struct pqi_scsi_dev *device = scmd->device->hostdata; 2732 2733 switch (sshdr.ascq) { 2734 case 0x1: /* LOGICAL UNIT FAILURE */ 2735 if (printk_ratelimit()) 2736 scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n", 2737 ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun); 2738 pqi_take_device_offline(scmd->device, "RAID"); 2739 host_byte = DID_NO_CONNECT; 2740 break; 2741 2742 default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */ 2743 if (printk_ratelimit()) 2744 scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n", 2745 sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun); 2746 break; 2747 } 2748 } 2749 2750 if (sense_data_length > SCSI_SENSE_BUFFERSIZE) 2751 sense_data_length = SCSI_SENSE_BUFFERSIZE; 2752 memcpy(scmd->sense_buffer, error_info->data, 2753 sense_data_length); 2754 } 2755 2756 scmd->result = scsi_status; 2757 set_host_byte(scmd, host_byte); 2758 } 2759 2760 static void pqi_process_aio_io_error(struct pqi_io_request *io_request) 2761 { 2762 u8 scsi_status; 2763 u8 host_byte; 2764 struct scsi_cmnd *scmd; 2765 struct pqi_aio_error_info *error_info; 2766 size_t sense_data_length; 2767 int residual_count; 2768 int xfer_count; 2769 bool device_offline; 2770 2771 scmd = io_request->scmd; 2772 error_info = io_request->error_info; 2773 host_byte = DID_OK; 2774 sense_data_length = 0; 2775 device_offline = false; 2776 2777 switch (error_info->service_response) { 2778 case PQI_AIO_SERV_RESPONSE_COMPLETE: 2779 scsi_status = error_info->status; 2780 break; 2781 case PQI_AIO_SERV_RESPONSE_FAILURE: 2782 switch (error_info->status) { 2783 case PQI_AIO_STATUS_IO_ABORTED: 2784 scsi_status = SAM_STAT_TASK_ABORTED; 2785 break; 2786 case PQI_AIO_STATUS_UNDERRUN: 2787 scsi_status = SAM_STAT_GOOD; 2788 residual_count = get_unaligned_le32( 2789 &error_info->residual_count); 2790 scsi_set_resid(scmd, residual_count); 2791 xfer_count = scsi_bufflen(scmd) - residual_count; 2792 if (xfer_count < scmd->underflow) 2793 host_byte = DID_SOFT_ERROR; 2794 break; 2795 case PQI_AIO_STATUS_OVERRUN: 2796 scsi_status = SAM_STAT_GOOD; 2797 break; 2798 case PQI_AIO_STATUS_AIO_PATH_DISABLED: 2799 pqi_aio_path_disabled(io_request); 2800 scsi_status = SAM_STAT_GOOD; 2801 io_request->status = -EAGAIN; 2802 break; 2803 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE: 2804 case PQI_AIO_STATUS_INVALID_DEVICE: 2805 if (!io_request->raid_bypass) { 2806 device_offline = true; 2807 pqi_take_device_offline(scmd->device, "AIO"); 2808 host_byte = DID_NO_CONNECT; 2809 } 2810 scsi_status = SAM_STAT_CHECK_CONDITION; 2811 break; 2812 case PQI_AIO_STATUS_IO_ERROR: 2813 default: 2814 scsi_status = SAM_STAT_CHECK_CONDITION; 2815 break; 2816 } 2817 break; 2818 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE: 2819 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED: 2820 scsi_status = SAM_STAT_GOOD; 2821 break; 2822 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED: 2823 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN: 2824 default: 2825 scsi_status = SAM_STAT_CHECK_CONDITION; 2826 break; 2827 } 2828 2829 if (error_info->data_present) { 2830 sense_data_length = 2831 get_unaligned_le16(&error_info->data_length); 2832 if (sense_data_length) { 2833 if (sense_data_length > sizeof(error_info->data)) 2834 sense_data_length = sizeof(error_info->data); 2835 if (sense_data_length > SCSI_SENSE_BUFFERSIZE) 2836 sense_data_length = SCSI_SENSE_BUFFERSIZE; 2837 memcpy(scmd->sense_buffer, error_info->data, 2838 sense_data_length); 2839 } 2840 } 2841 2842 if (device_offline && sense_data_length == 0) 2843 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR, 2844 0x3e, 0x1); 2845 2846 scmd->result = scsi_status; 2847 set_host_byte(scmd, host_byte); 2848 } 2849 2850 static void pqi_process_io_error(unsigned int iu_type, 2851 struct pqi_io_request *io_request) 2852 { 2853 switch (iu_type) { 2854 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR: 2855 pqi_process_raid_io_error(io_request); 2856 break; 2857 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR: 2858 pqi_process_aio_io_error(io_request); 2859 break; 2860 } 2861 } 2862 2863 static int pqi_interpret_task_management_response( 2864 struct pqi_task_management_response *response) 2865 { 2866 int rc; 2867 2868 switch (response->response_code) { 2869 case SOP_TMF_COMPLETE: 2870 case SOP_TMF_FUNCTION_SUCCEEDED: 2871 rc = 0; 2872 break; 2873 case SOP_TMF_REJECTED: 2874 rc = -EAGAIN; 2875 break; 2876 default: 2877 rc = -EIO; 2878 break; 2879 } 2880 2881 return rc; 2882 } 2883 2884 static inline void pqi_invalid_response(struct pqi_ctrl_info *ctrl_info) 2885 { 2886 pqi_take_ctrl_offline(ctrl_info); 2887 } 2888 2889 static int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info, struct pqi_queue_group *queue_group) 2890 { 2891 int num_responses; 2892 pqi_index_t oq_pi; 2893 pqi_index_t oq_ci; 2894 struct pqi_io_request *io_request; 2895 struct pqi_io_response *response; 2896 u16 request_id; 2897 2898 num_responses = 0; 2899 oq_ci = queue_group->oq_ci_copy; 2900 2901 while (1) { 2902 oq_pi = readl(queue_group->oq_pi); 2903 if (oq_pi >= ctrl_info->num_elements_per_oq) { 2904 pqi_invalid_response(ctrl_info); 2905 dev_err(&ctrl_info->pci_dev->dev, 2906 "I/O interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n", 2907 oq_pi, ctrl_info->num_elements_per_oq - 1, oq_ci); 2908 return -1; 2909 } 2910 if (oq_pi == oq_ci) 2911 break; 2912 2913 num_responses++; 2914 response = queue_group->oq_element_array + 2915 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 2916 2917 request_id = get_unaligned_le16(&response->request_id); 2918 if (request_id >= ctrl_info->max_io_slots) { 2919 pqi_invalid_response(ctrl_info); 2920 dev_err(&ctrl_info->pci_dev->dev, 2921 "request ID in response (%u) out of range (0-%u): producer index: %u consumer index: %u\n", 2922 request_id, ctrl_info->max_io_slots - 1, oq_pi, oq_ci); 2923 return -1; 2924 } 2925 2926 io_request = &ctrl_info->io_request_pool[request_id]; 2927 if (atomic_read(&io_request->refcount) == 0) { 2928 pqi_invalid_response(ctrl_info); 2929 dev_err(&ctrl_info->pci_dev->dev, 2930 "request ID in response (%u) does not match an outstanding I/O request: producer index: %u consumer index: %u\n", 2931 request_id, oq_pi, oq_ci); 2932 return -1; 2933 } 2934 2935 switch (response->header.iu_type) { 2936 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS: 2937 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS: 2938 if (io_request->scmd) 2939 io_request->scmd->result = 0; 2940 fallthrough; 2941 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT: 2942 break; 2943 case PQI_RESPONSE_IU_VENDOR_GENERAL: 2944 io_request->status = 2945 get_unaligned_le16( 2946 &((struct pqi_vendor_general_response *) 2947 response)->status); 2948 break; 2949 case PQI_RESPONSE_IU_TASK_MANAGEMENT: 2950 io_request->status = 2951 pqi_interpret_task_management_response( 2952 (void *)response); 2953 break; 2954 case PQI_RESPONSE_IU_AIO_PATH_DISABLED: 2955 pqi_aio_path_disabled(io_request); 2956 io_request->status = -EAGAIN; 2957 break; 2958 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR: 2959 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR: 2960 io_request->error_info = ctrl_info->error_buffer + 2961 (get_unaligned_le16(&response->error_index) * 2962 PQI_ERROR_BUFFER_ELEMENT_LENGTH); 2963 pqi_process_io_error(response->header.iu_type, io_request); 2964 break; 2965 default: 2966 pqi_invalid_response(ctrl_info); 2967 dev_err(&ctrl_info->pci_dev->dev, 2968 "unexpected IU type: 0x%x: producer index: %u consumer index: %u\n", 2969 response->header.iu_type, oq_pi, oq_ci); 2970 return -1; 2971 } 2972 2973 io_request->io_complete_callback(io_request, io_request->context); 2974 2975 /* 2976 * Note that the I/O request structure CANNOT BE TOUCHED after 2977 * returning from the I/O completion callback! 2978 */ 2979 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq; 2980 } 2981 2982 if (num_responses) { 2983 queue_group->oq_ci_copy = oq_ci; 2984 writel(oq_ci, queue_group->oq_ci); 2985 } 2986 2987 return num_responses; 2988 } 2989 2990 static inline unsigned int pqi_num_elements_free(unsigned int pi, 2991 unsigned int ci, unsigned int elements_in_queue) 2992 { 2993 unsigned int num_elements_used; 2994 2995 if (pi >= ci) 2996 num_elements_used = pi - ci; 2997 else 2998 num_elements_used = elements_in_queue - ci + pi; 2999 3000 return elements_in_queue - num_elements_used - 1; 3001 } 3002 3003 static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info, 3004 struct pqi_event_acknowledge_request *iu, size_t iu_length) 3005 { 3006 pqi_index_t iq_pi; 3007 pqi_index_t iq_ci; 3008 unsigned long flags; 3009 void *next_element; 3010 struct pqi_queue_group *queue_group; 3011 3012 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP]; 3013 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id); 3014 3015 while (1) { 3016 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags); 3017 3018 iq_pi = queue_group->iq_pi_copy[RAID_PATH]; 3019 iq_ci = readl(queue_group->iq_ci[RAID_PATH]); 3020 3021 if (pqi_num_elements_free(iq_pi, iq_ci, 3022 ctrl_info->num_elements_per_iq)) 3023 break; 3024 3025 spin_unlock_irqrestore( 3026 &queue_group->submit_lock[RAID_PATH], flags); 3027 3028 if (pqi_ctrl_offline(ctrl_info)) 3029 return; 3030 } 3031 3032 next_element = queue_group->iq_element_array[RAID_PATH] + 3033 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3034 3035 memcpy(next_element, iu, iu_length); 3036 3037 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq; 3038 queue_group->iq_pi_copy[RAID_PATH] = iq_pi; 3039 3040 /* 3041 * This write notifies the controller that an IU is available to be 3042 * processed. 3043 */ 3044 writel(iq_pi, queue_group->iq_pi[RAID_PATH]); 3045 3046 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags); 3047 } 3048 3049 static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info, 3050 struct pqi_event *event) 3051 { 3052 struct pqi_event_acknowledge_request request; 3053 3054 memset(&request, 0, sizeof(request)); 3055 3056 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT; 3057 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 3058 &request.header.iu_length); 3059 request.event_type = event->event_type; 3060 request.event_id = event->event_id; 3061 request.additional_event_id = event->additional_event_id; 3062 3063 pqi_send_event_ack(ctrl_info, &request, sizeof(request)); 3064 } 3065 3066 #define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30 3067 #define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1 3068 3069 static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status( 3070 struct pqi_ctrl_info *ctrl_info) 3071 { 3072 unsigned long timeout; 3073 u8 status; 3074 3075 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies; 3076 3077 while (1) { 3078 status = pqi_read_soft_reset_status(ctrl_info); 3079 if (status & PQI_SOFT_RESET_INITIATE) 3080 return RESET_INITIATE_DRIVER; 3081 3082 if (status & PQI_SOFT_RESET_ABORT) 3083 return RESET_ABORT; 3084 3085 if (time_after(jiffies, timeout)) { 3086 dev_err(&ctrl_info->pci_dev->dev, 3087 "timed out waiting for soft reset status\n"); 3088 return RESET_TIMEDOUT; 3089 } 3090 3091 if (!sis_is_firmware_running(ctrl_info)) 3092 return RESET_NORESPONSE; 3093 3094 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS); 3095 } 3096 } 3097 3098 static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info, 3099 enum pqi_soft_reset_status reset_status) 3100 { 3101 int rc; 3102 3103 switch (reset_status) { 3104 case RESET_INITIATE_DRIVER: 3105 case RESET_TIMEDOUT: 3106 dev_info(&ctrl_info->pci_dev->dev, 3107 "resetting controller %u\n", ctrl_info->ctrl_id); 3108 sis_soft_reset(ctrl_info); 3109 fallthrough; 3110 case RESET_INITIATE_FIRMWARE: 3111 rc = pqi_ofa_ctrl_restart(ctrl_info); 3112 pqi_ofa_free_host_buffer(ctrl_info); 3113 dev_info(&ctrl_info->pci_dev->dev, 3114 "Online Firmware Activation for controller %u: %s\n", 3115 ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED"); 3116 break; 3117 case RESET_ABORT: 3118 pqi_ofa_ctrl_unquiesce(ctrl_info); 3119 dev_info(&ctrl_info->pci_dev->dev, 3120 "Online Firmware Activation for controller %u: %s\n", 3121 ctrl_info->ctrl_id, "ABORTED"); 3122 break; 3123 case RESET_NORESPONSE: 3124 pqi_ofa_free_host_buffer(ctrl_info); 3125 pqi_take_ctrl_offline(ctrl_info); 3126 break; 3127 } 3128 } 3129 3130 static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info, 3131 struct pqi_event *event) 3132 { 3133 u16 event_id; 3134 enum pqi_soft_reset_status status; 3135 3136 event_id = get_unaligned_le16(&event->event_id); 3137 3138 mutex_lock(&ctrl_info->ofa_mutex); 3139 3140 if (event_id == PQI_EVENT_OFA_QUIESCE) { 3141 dev_info(&ctrl_info->pci_dev->dev, 3142 "Received Online Firmware Activation quiesce event for controller %u\n", 3143 ctrl_info->ctrl_id); 3144 pqi_ofa_ctrl_quiesce(ctrl_info); 3145 pqi_acknowledge_event(ctrl_info, event); 3146 if (ctrl_info->soft_reset_handshake_supported) { 3147 status = pqi_poll_for_soft_reset_status(ctrl_info); 3148 pqi_process_soft_reset(ctrl_info, status); 3149 } else { 3150 pqi_process_soft_reset(ctrl_info, 3151 RESET_INITIATE_FIRMWARE); 3152 } 3153 3154 } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { 3155 pqi_acknowledge_event(ctrl_info, event); 3156 pqi_ofa_setup_host_buffer(ctrl_info, 3157 le32_to_cpu(event->ofa_bytes_requested)); 3158 pqi_ofa_host_memory_update(ctrl_info); 3159 } else if (event_id == PQI_EVENT_OFA_CANCELLED) { 3160 pqi_ofa_free_host_buffer(ctrl_info); 3161 pqi_acknowledge_event(ctrl_info, event); 3162 dev_info(&ctrl_info->pci_dev->dev, 3163 "Online Firmware Activation(%u) cancel reason : %u\n", 3164 ctrl_info->ctrl_id, event->ofa_cancel_reason); 3165 } 3166 3167 mutex_unlock(&ctrl_info->ofa_mutex); 3168 } 3169 3170 static void pqi_event_worker(struct work_struct *work) 3171 { 3172 unsigned int i; 3173 struct pqi_ctrl_info *ctrl_info; 3174 struct pqi_event *event; 3175 3176 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work); 3177 3178 pqi_ctrl_busy(ctrl_info); 3179 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT); 3180 if (pqi_ctrl_offline(ctrl_info)) 3181 goto out; 3182 3183 pqi_schedule_rescan_worker_delayed(ctrl_info); 3184 3185 event = ctrl_info->events; 3186 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) { 3187 if (event->pending) { 3188 event->pending = false; 3189 if (event->event_type == PQI_EVENT_TYPE_OFA) { 3190 pqi_ctrl_unbusy(ctrl_info); 3191 pqi_ofa_process_event(ctrl_info, event); 3192 return; 3193 } 3194 pqi_acknowledge_event(ctrl_info, event); 3195 } 3196 event++; 3197 } 3198 3199 out: 3200 pqi_ctrl_unbusy(ctrl_info); 3201 } 3202 3203 #define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ) 3204 3205 static void pqi_heartbeat_timer_handler(struct timer_list *t) 3206 { 3207 int num_interrupts; 3208 u32 heartbeat_count; 3209 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t, 3210 heartbeat_timer); 3211 3212 pqi_check_ctrl_health(ctrl_info); 3213 if (pqi_ctrl_offline(ctrl_info)) 3214 return; 3215 3216 num_interrupts = atomic_read(&ctrl_info->num_interrupts); 3217 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info); 3218 3219 if (num_interrupts == ctrl_info->previous_num_interrupts) { 3220 if (heartbeat_count == ctrl_info->previous_heartbeat_count) { 3221 dev_err(&ctrl_info->pci_dev->dev, 3222 "no heartbeat detected - last heartbeat count: %u\n", 3223 heartbeat_count); 3224 pqi_take_ctrl_offline(ctrl_info); 3225 return; 3226 } 3227 } else { 3228 ctrl_info->previous_num_interrupts = num_interrupts; 3229 } 3230 3231 ctrl_info->previous_heartbeat_count = heartbeat_count; 3232 mod_timer(&ctrl_info->heartbeat_timer, 3233 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL); 3234 } 3235 3236 static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) 3237 { 3238 if (!ctrl_info->heartbeat_counter) 3239 return; 3240 3241 ctrl_info->previous_num_interrupts = 3242 atomic_read(&ctrl_info->num_interrupts); 3243 ctrl_info->previous_heartbeat_count = 3244 pqi_read_heartbeat_counter(ctrl_info); 3245 3246 ctrl_info->heartbeat_timer.expires = 3247 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL; 3248 add_timer(&ctrl_info->heartbeat_timer); 3249 } 3250 3251 static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) 3252 { 3253 del_timer_sync(&ctrl_info->heartbeat_timer); 3254 } 3255 3256 static inline int pqi_event_type_to_event_index(unsigned int event_type) 3257 { 3258 int index; 3259 3260 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++) 3261 if (event_type == pqi_supported_event_types[index]) 3262 return index; 3263 3264 return -1; 3265 } 3266 3267 static inline bool pqi_is_supported_event(unsigned int event_type) 3268 { 3269 return pqi_event_type_to_event_index(event_type) != -1; 3270 } 3271 3272 static void pqi_ofa_capture_event_payload(struct pqi_event *event, 3273 struct pqi_event_response *response) 3274 { 3275 u16 event_id; 3276 3277 event_id = get_unaligned_le16(&event->event_id); 3278 3279 if (event->event_type == PQI_EVENT_TYPE_OFA) { 3280 if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { 3281 event->ofa_bytes_requested = 3282 response->data.ofa_memory_allocation.bytes_requested; 3283 } else if (event_id == PQI_EVENT_OFA_CANCELLED) { 3284 event->ofa_cancel_reason = 3285 response->data.ofa_cancelled.reason; 3286 } 3287 } 3288 } 3289 3290 static int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info) 3291 { 3292 int num_events; 3293 pqi_index_t oq_pi; 3294 pqi_index_t oq_ci; 3295 struct pqi_event_queue *event_queue; 3296 struct pqi_event_response *response; 3297 struct pqi_event *event; 3298 int event_index; 3299 3300 event_queue = &ctrl_info->event_queue; 3301 num_events = 0; 3302 oq_ci = event_queue->oq_ci_copy; 3303 3304 while (1) { 3305 oq_pi = readl(event_queue->oq_pi); 3306 if (oq_pi >= PQI_NUM_EVENT_QUEUE_ELEMENTS) { 3307 pqi_invalid_response(ctrl_info); 3308 dev_err(&ctrl_info->pci_dev->dev, 3309 "event interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n", 3310 oq_pi, PQI_NUM_EVENT_QUEUE_ELEMENTS - 1, oq_ci); 3311 return -1; 3312 } 3313 3314 if (oq_pi == oq_ci) 3315 break; 3316 3317 num_events++; 3318 response = event_queue->oq_element_array + (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH); 3319 3320 event_index = 3321 pqi_event_type_to_event_index(response->event_type); 3322 3323 if (event_index >= 0 && response->request_acknowledge) { 3324 event = &ctrl_info->events[event_index]; 3325 event->pending = true; 3326 event->event_type = response->event_type; 3327 event->event_id = response->event_id; 3328 event->additional_event_id = response->additional_event_id; 3329 if (event->event_type == PQI_EVENT_TYPE_OFA) 3330 pqi_ofa_capture_event_payload(event, response); 3331 } 3332 3333 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS; 3334 } 3335 3336 if (num_events) { 3337 event_queue->oq_ci_copy = oq_ci; 3338 writel(oq_ci, event_queue->oq_ci); 3339 schedule_work(&ctrl_info->event_work); 3340 } 3341 3342 return num_events; 3343 } 3344 3345 #define PQI_LEGACY_INTX_MASK 0x1 3346 3347 static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, 3348 bool enable_intx) 3349 { 3350 u32 intx_mask; 3351 struct pqi_device_registers __iomem *pqi_registers; 3352 volatile void __iomem *register_addr; 3353 3354 pqi_registers = ctrl_info->pqi_registers; 3355 3356 if (enable_intx) 3357 register_addr = &pqi_registers->legacy_intx_mask_clear; 3358 else 3359 register_addr = &pqi_registers->legacy_intx_mask_set; 3360 3361 intx_mask = readl(register_addr); 3362 intx_mask |= PQI_LEGACY_INTX_MASK; 3363 writel(intx_mask, register_addr); 3364 } 3365 3366 static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info, 3367 enum pqi_irq_mode new_mode) 3368 { 3369 switch (ctrl_info->irq_mode) { 3370 case IRQ_MODE_MSIX: 3371 switch (new_mode) { 3372 case IRQ_MODE_MSIX: 3373 break; 3374 case IRQ_MODE_INTX: 3375 pqi_configure_legacy_intx(ctrl_info, true); 3376 sis_enable_intx(ctrl_info); 3377 break; 3378 case IRQ_MODE_NONE: 3379 break; 3380 } 3381 break; 3382 case IRQ_MODE_INTX: 3383 switch (new_mode) { 3384 case IRQ_MODE_MSIX: 3385 pqi_configure_legacy_intx(ctrl_info, false); 3386 sis_enable_msix(ctrl_info); 3387 break; 3388 case IRQ_MODE_INTX: 3389 break; 3390 case IRQ_MODE_NONE: 3391 pqi_configure_legacy_intx(ctrl_info, false); 3392 break; 3393 } 3394 break; 3395 case IRQ_MODE_NONE: 3396 switch (new_mode) { 3397 case IRQ_MODE_MSIX: 3398 sis_enable_msix(ctrl_info); 3399 break; 3400 case IRQ_MODE_INTX: 3401 pqi_configure_legacy_intx(ctrl_info, true); 3402 sis_enable_intx(ctrl_info); 3403 break; 3404 case IRQ_MODE_NONE: 3405 break; 3406 } 3407 break; 3408 } 3409 3410 ctrl_info->irq_mode = new_mode; 3411 } 3412 3413 #define PQI_LEGACY_INTX_PENDING 0x1 3414 3415 static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info) 3416 { 3417 bool valid_irq; 3418 u32 intx_status; 3419 3420 switch (ctrl_info->irq_mode) { 3421 case IRQ_MODE_MSIX: 3422 valid_irq = true; 3423 break; 3424 case IRQ_MODE_INTX: 3425 intx_status = 3426 readl(&ctrl_info->pqi_registers->legacy_intx_status); 3427 if (intx_status & PQI_LEGACY_INTX_PENDING) 3428 valid_irq = true; 3429 else 3430 valid_irq = false; 3431 break; 3432 case IRQ_MODE_NONE: 3433 default: 3434 valid_irq = false; 3435 break; 3436 } 3437 3438 return valid_irq; 3439 } 3440 3441 static irqreturn_t pqi_irq_handler(int irq, void *data) 3442 { 3443 struct pqi_ctrl_info *ctrl_info; 3444 struct pqi_queue_group *queue_group; 3445 int num_io_responses_handled; 3446 int num_events_handled; 3447 3448 queue_group = data; 3449 ctrl_info = queue_group->ctrl_info; 3450 3451 if (!pqi_is_valid_irq(ctrl_info)) 3452 return IRQ_NONE; 3453 3454 num_io_responses_handled = pqi_process_io_intr(ctrl_info, queue_group); 3455 if (num_io_responses_handled < 0) 3456 goto out; 3457 3458 if (irq == ctrl_info->event_irq) { 3459 num_events_handled = pqi_process_event_intr(ctrl_info); 3460 if (num_events_handled < 0) 3461 goto out; 3462 } else { 3463 num_events_handled = 0; 3464 } 3465 3466 if (num_io_responses_handled + num_events_handled > 0) 3467 atomic_inc(&ctrl_info->num_interrupts); 3468 3469 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL); 3470 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL); 3471 3472 out: 3473 return IRQ_HANDLED; 3474 } 3475 3476 static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info) 3477 { 3478 struct pci_dev *pci_dev = ctrl_info->pci_dev; 3479 int i; 3480 int rc; 3481 3482 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0); 3483 3484 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) { 3485 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0, 3486 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]); 3487 if (rc) { 3488 dev_err(&pci_dev->dev, 3489 "irq %u init failed with error %d\n", 3490 pci_irq_vector(pci_dev, i), rc); 3491 return rc; 3492 } 3493 ctrl_info->num_msix_vectors_initialized++; 3494 } 3495 3496 return 0; 3497 } 3498 3499 static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info) 3500 { 3501 int i; 3502 3503 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++) 3504 free_irq(pci_irq_vector(ctrl_info->pci_dev, i), 3505 &ctrl_info->queue_groups[i]); 3506 3507 ctrl_info->num_msix_vectors_initialized = 0; 3508 } 3509 3510 static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info) 3511 { 3512 int num_vectors_enabled; 3513 3514 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev, 3515 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups, 3516 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); 3517 if (num_vectors_enabled < 0) { 3518 dev_err(&ctrl_info->pci_dev->dev, 3519 "MSI-X init failed with error %d\n", 3520 num_vectors_enabled); 3521 return num_vectors_enabled; 3522 } 3523 3524 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled; 3525 ctrl_info->irq_mode = IRQ_MODE_MSIX; 3526 return 0; 3527 } 3528 3529 static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info) 3530 { 3531 if (ctrl_info->num_msix_vectors_enabled) { 3532 pci_free_irq_vectors(ctrl_info->pci_dev); 3533 ctrl_info->num_msix_vectors_enabled = 0; 3534 } 3535 } 3536 3537 static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info) 3538 { 3539 unsigned int i; 3540 size_t alloc_length; 3541 size_t element_array_length_per_iq; 3542 size_t element_array_length_per_oq; 3543 void *element_array; 3544 void __iomem *next_queue_index; 3545 void *aligned_pointer; 3546 unsigned int num_inbound_queues; 3547 unsigned int num_outbound_queues; 3548 unsigned int num_queue_indexes; 3549 struct pqi_queue_group *queue_group; 3550 3551 element_array_length_per_iq = 3552 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH * 3553 ctrl_info->num_elements_per_iq; 3554 element_array_length_per_oq = 3555 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH * 3556 ctrl_info->num_elements_per_oq; 3557 num_inbound_queues = ctrl_info->num_queue_groups * 2; 3558 num_outbound_queues = ctrl_info->num_queue_groups; 3559 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1; 3560 3561 aligned_pointer = NULL; 3562 3563 for (i = 0; i < num_inbound_queues; i++) { 3564 aligned_pointer = PTR_ALIGN(aligned_pointer, 3565 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3566 aligned_pointer += element_array_length_per_iq; 3567 } 3568 3569 for (i = 0; i < num_outbound_queues; i++) { 3570 aligned_pointer = PTR_ALIGN(aligned_pointer, 3571 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3572 aligned_pointer += element_array_length_per_oq; 3573 } 3574 3575 aligned_pointer = PTR_ALIGN(aligned_pointer, 3576 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3577 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS * 3578 PQI_EVENT_OQ_ELEMENT_LENGTH; 3579 3580 for (i = 0; i < num_queue_indexes; i++) { 3581 aligned_pointer = PTR_ALIGN(aligned_pointer, 3582 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3583 aligned_pointer += sizeof(pqi_index_t); 3584 } 3585 3586 alloc_length = (size_t)aligned_pointer + 3587 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT; 3588 3589 alloc_length += PQI_EXTRA_SGL_MEMORY; 3590 3591 ctrl_info->queue_memory_base = 3592 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length, 3593 &ctrl_info->queue_memory_base_dma_handle, 3594 GFP_KERNEL); 3595 3596 if (!ctrl_info->queue_memory_base) 3597 return -ENOMEM; 3598 3599 ctrl_info->queue_memory_length = alloc_length; 3600 3601 element_array = PTR_ALIGN(ctrl_info->queue_memory_base, 3602 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3603 3604 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3605 queue_group = &ctrl_info->queue_groups[i]; 3606 queue_group->iq_element_array[RAID_PATH] = element_array; 3607 queue_group->iq_element_array_bus_addr[RAID_PATH] = 3608 ctrl_info->queue_memory_base_dma_handle + 3609 (element_array - ctrl_info->queue_memory_base); 3610 element_array += element_array_length_per_iq; 3611 element_array = PTR_ALIGN(element_array, 3612 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3613 queue_group->iq_element_array[AIO_PATH] = element_array; 3614 queue_group->iq_element_array_bus_addr[AIO_PATH] = 3615 ctrl_info->queue_memory_base_dma_handle + 3616 (element_array - ctrl_info->queue_memory_base); 3617 element_array += element_array_length_per_iq; 3618 element_array = PTR_ALIGN(element_array, 3619 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3620 } 3621 3622 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3623 queue_group = &ctrl_info->queue_groups[i]; 3624 queue_group->oq_element_array = element_array; 3625 queue_group->oq_element_array_bus_addr = 3626 ctrl_info->queue_memory_base_dma_handle + 3627 (element_array - ctrl_info->queue_memory_base); 3628 element_array += element_array_length_per_oq; 3629 element_array = PTR_ALIGN(element_array, 3630 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3631 } 3632 3633 ctrl_info->event_queue.oq_element_array = element_array; 3634 ctrl_info->event_queue.oq_element_array_bus_addr = 3635 ctrl_info->queue_memory_base_dma_handle + 3636 (element_array - ctrl_info->queue_memory_base); 3637 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS * 3638 PQI_EVENT_OQ_ELEMENT_LENGTH; 3639 3640 next_queue_index = (void __iomem *)PTR_ALIGN(element_array, 3641 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3642 3643 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3644 queue_group = &ctrl_info->queue_groups[i]; 3645 queue_group->iq_ci[RAID_PATH] = next_queue_index; 3646 queue_group->iq_ci_bus_addr[RAID_PATH] = 3647 ctrl_info->queue_memory_base_dma_handle + 3648 (next_queue_index - 3649 (void __iomem *)ctrl_info->queue_memory_base); 3650 next_queue_index += sizeof(pqi_index_t); 3651 next_queue_index = PTR_ALIGN(next_queue_index, 3652 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3653 queue_group->iq_ci[AIO_PATH] = next_queue_index; 3654 queue_group->iq_ci_bus_addr[AIO_PATH] = 3655 ctrl_info->queue_memory_base_dma_handle + 3656 (next_queue_index - 3657 (void __iomem *)ctrl_info->queue_memory_base); 3658 next_queue_index += sizeof(pqi_index_t); 3659 next_queue_index = PTR_ALIGN(next_queue_index, 3660 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3661 queue_group->oq_pi = next_queue_index; 3662 queue_group->oq_pi_bus_addr = 3663 ctrl_info->queue_memory_base_dma_handle + 3664 (next_queue_index - 3665 (void __iomem *)ctrl_info->queue_memory_base); 3666 next_queue_index += sizeof(pqi_index_t); 3667 next_queue_index = PTR_ALIGN(next_queue_index, 3668 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3669 } 3670 3671 ctrl_info->event_queue.oq_pi = next_queue_index; 3672 ctrl_info->event_queue.oq_pi_bus_addr = 3673 ctrl_info->queue_memory_base_dma_handle + 3674 (next_queue_index - 3675 (void __iomem *)ctrl_info->queue_memory_base); 3676 3677 return 0; 3678 } 3679 3680 static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info) 3681 { 3682 unsigned int i; 3683 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID; 3684 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID; 3685 3686 /* 3687 * Initialize the backpointers to the controller structure in 3688 * each operational queue group structure. 3689 */ 3690 for (i = 0; i < ctrl_info->num_queue_groups; i++) 3691 ctrl_info->queue_groups[i].ctrl_info = ctrl_info; 3692 3693 /* 3694 * Assign IDs to all operational queues. Note that the IDs 3695 * assigned to operational IQs are independent of the IDs 3696 * assigned to operational OQs. 3697 */ 3698 ctrl_info->event_queue.oq_id = next_oq_id++; 3699 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3700 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++; 3701 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++; 3702 ctrl_info->queue_groups[i].oq_id = next_oq_id++; 3703 } 3704 3705 /* 3706 * Assign MSI-X table entry indexes to all queues. Note that the 3707 * interrupt for the event queue is shared with the first queue group. 3708 */ 3709 ctrl_info->event_queue.int_msg_num = 0; 3710 for (i = 0; i < ctrl_info->num_queue_groups; i++) 3711 ctrl_info->queue_groups[i].int_msg_num = i; 3712 3713 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3714 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]); 3715 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]); 3716 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]); 3717 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]); 3718 } 3719 } 3720 3721 static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info) 3722 { 3723 size_t alloc_length; 3724 struct pqi_admin_queues_aligned *admin_queues_aligned; 3725 struct pqi_admin_queues *admin_queues; 3726 3727 alloc_length = sizeof(struct pqi_admin_queues_aligned) + 3728 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT; 3729 3730 ctrl_info->admin_queue_memory_base = 3731 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length, 3732 &ctrl_info->admin_queue_memory_base_dma_handle, 3733 GFP_KERNEL); 3734 3735 if (!ctrl_info->admin_queue_memory_base) 3736 return -ENOMEM; 3737 3738 ctrl_info->admin_queue_memory_length = alloc_length; 3739 3740 admin_queues = &ctrl_info->admin_queues; 3741 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base, 3742 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3743 admin_queues->iq_element_array = 3744 &admin_queues_aligned->iq_element_array; 3745 admin_queues->oq_element_array = 3746 &admin_queues_aligned->oq_element_array; 3747 admin_queues->iq_ci = &admin_queues_aligned->iq_ci; 3748 admin_queues->oq_pi = 3749 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi; 3750 3751 admin_queues->iq_element_array_bus_addr = 3752 ctrl_info->admin_queue_memory_base_dma_handle + 3753 (admin_queues->iq_element_array - 3754 ctrl_info->admin_queue_memory_base); 3755 admin_queues->oq_element_array_bus_addr = 3756 ctrl_info->admin_queue_memory_base_dma_handle + 3757 (admin_queues->oq_element_array - 3758 ctrl_info->admin_queue_memory_base); 3759 admin_queues->iq_ci_bus_addr = 3760 ctrl_info->admin_queue_memory_base_dma_handle + 3761 ((void *)admin_queues->iq_ci - 3762 ctrl_info->admin_queue_memory_base); 3763 admin_queues->oq_pi_bus_addr = 3764 ctrl_info->admin_queue_memory_base_dma_handle + 3765 ((void __iomem *)admin_queues->oq_pi - 3766 (void __iomem *)ctrl_info->admin_queue_memory_base); 3767 3768 return 0; 3769 } 3770 3771 #define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ 3772 #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1 3773 3774 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info) 3775 { 3776 struct pqi_device_registers __iomem *pqi_registers; 3777 struct pqi_admin_queues *admin_queues; 3778 unsigned long timeout; 3779 u8 status; 3780 u32 reg; 3781 3782 pqi_registers = ctrl_info->pqi_registers; 3783 admin_queues = &ctrl_info->admin_queues; 3784 3785 writeq((u64)admin_queues->iq_element_array_bus_addr, 3786 &pqi_registers->admin_iq_element_array_addr); 3787 writeq((u64)admin_queues->oq_element_array_bus_addr, 3788 &pqi_registers->admin_oq_element_array_addr); 3789 writeq((u64)admin_queues->iq_ci_bus_addr, 3790 &pqi_registers->admin_iq_ci_addr); 3791 writeq((u64)admin_queues->oq_pi_bus_addr, 3792 &pqi_registers->admin_oq_pi_addr); 3793 3794 reg = PQI_ADMIN_IQ_NUM_ELEMENTS | 3795 (PQI_ADMIN_OQ_NUM_ELEMENTS << 8) | 3796 (admin_queues->int_msg_num << 16); 3797 writel(reg, &pqi_registers->admin_iq_num_elements); 3798 writel(PQI_CREATE_ADMIN_QUEUE_PAIR, 3799 &pqi_registers->function_and_status_code); 3800 3801 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies; 3802 while (1) { 3803 status = readb(&pqi_registers->function_and_status_code); 3804 if (status == PQI_STATUS_IDLE) 3805 break; 3806 if (time_after(jiffies, timeout)) 3807 return -ETIMEDOUT; 3808 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS); 3809 } 3810 3811 /* 3812 * The offset registers are not initialized to the correct 3813 * offsets until *after* the create admin queue pair command 3814 * completes successfully. 3815 */ 3816 admin_queues->iq_pi = ctrl_info->iomem_base + 3817 PQI_DEVICE_REGISTERS_OFFSET + 3818 readq(&pqi_registers->admin_iq_pi_offset); 3819 admin_queues->oq_ci = ctrl_info->iomem_base + 3820 PQI_DEVICE_REGISTERS_OFFSET + 3821 readq(&pqi_registers->admin_oq_ci_offset); 3822 3823 return 0; 3824 } 3825 3826 static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info, 3827 struct pqi_general_admin_request *request) 3828 { 3829 struct pqi_admin_queues *admin_queues; 3830 void *next_element; 3831 pqi_index_t iq_pi; 3832 3833 admin_queues = &ctrl_info->admin_queues; 3834 iq_pi = admin_queues->iq_pi_copy; 3835 3836 next_element = admin_queues->iq_element_array + 3837 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH); 3838 3839 memcpy(next_element, request, sizeof(*request)); 3840 3841 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS; 3842 admin_queues->iq_pi_copy = iq_pi; 3843 3844 /* 3845 * This write notifies the controller that an IU is available to be 3846 * processed. 3847 */ 3848 writel(iq_pi, admin_queues->iq_pi); 3849 } 3850 3851 #define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60 3852 3853 static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info, 3854 struct pqi_general_admin_response *response) 3855 { 3856 struct pqi_admin_queues *admin_queues; 3857 pqi_index_t oq_pi; 3858 pqi_index_t oq_ci; 3859 unsigned long timeout; 3860 3861 admin_queues = &ctrl_info->admin_queues; 3862 oq_ci = admin_queues->oq_ci_copy; 3863 3864 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies; 3865 3866 while (1) { 3867 oq_pi = readl(admin_queues->oq_pi); 3868 if (oq_pi != oq_ci) 3869 break; 3870 if (time_after(jiffies, timeout)) { 3871 dev_err(&ctrl_info->pci_dev->dev, 3872 "timed out waiting for admin response\n"); 3873 return -ETIMEDOUT; 3874 } 3875 if (!sis_is_firmware_running(ctrl_info)) 3876 return -ENXIO; 3877 usleep_range(1000, 2000); 3878 } 3879 3880 memcpy(response, admin_queues->oq_element_array + 3881 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response)); 3882 3883 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS; 3884 admin_queues->oq_ci_copy = oq_ci; 3885 writel(oq_ci, admin_queues->oq_ci); 3886 3887 return 0; 3888 } 3889 3890 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, 3891 struct pqi_queue_group *queue_group, enum pqi_io_path path, 3892 struct pqi_io_request *io_request) 3893 { 3894 struct pqi_io_request *next; 3895 void *next_element; 3896 pqi_index_t iq_pi; 3897 pqi_index_t iq_ci; 3898 size_t iu_length; 3899 unsigned long flags; 3900 unsigned int num_elements_needed; 3901 unsigned int num_elements_to_end_of_queue; 3902 size_t copy_count; 3903 struct pqi_iu_header *request; 3904 3905 spin_lock_irqsave(&queue_group->submit_lock[path], flags); 3906 3907 if (io_request) { 3908 io_request->queue_group = queue_group; 3909 list_add_tail(&io_request->request_list_entry, 3910 &queue_group->request_list[path]); 3911 } 3912 3913 iq_pi = queue_group->iq_pi_copy[path]; 3914 3915 list_for_each_entry_safe(io_request, next, 3916 &queue_group->request_list[path], request_list_entry) { 3917 3918 request = io_request->iu; 3919 3920 iu_length = get_unaligned_le16(&request->iu_length) + 3921 PQI_REQUEST_HEADER_LENGTH; 3922 num_elements_needed = 3923 DIV_ROUND_UP(iu_length, 3924 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3925 3926 iq_ci = readl(queue_group->iq_ci[path]); 3927 3928 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci, 3929 ctrl_info->num_elements_per_iq)) 3930 break; 3931 3932 put_unaligned_le16(queue_group->oq_id, 3933 &request->response_queue_id); 3934 3935 next_element = queue_group->iq_element_array[path] + 3936 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3937 3938 num_elements_to_end_of_queue = 3939 ctrl_info->num_elements_per_iq - iq_pi; 3940 3941 if (num_elements_needed <= num_elements_to_end_of_queue) { 3942 memcpy(next_element, request, iu_length); 3943 } else { 3944 copy_count = num_elements_to_end_of_queue * 3945 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 3946 memcpy(next_element, request, copy_count); 3947 memcpy(queue_group->iq_element_array[path], 3948 (u8 *)request + copy_count, 3949 iu_length - copy_count); 3950 } 3951 3952 iq_pi = (iq_pi + num_elements_needed) % 3953 ctrl_info->num_elements_per_iq; 3954 3955 list_del(&io_request->request_list_entry); 3956 } 3957 3958 if (iq_pi != queue_group->iq_pi_copy[path]) { 3959 queue_group->iq_pi_copy[path] = iq_pi; 3960 /* 3961 * This write notifies the controller that one or more IUs are 3962 * available to be processed. 3963 */ 3964 writel(iq_pi, queue_group->iq_pi[path]); 3965 } 3966 3967 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags); 3968 } 3969 3970 #define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10 3971 3972 static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info, 3973 struct completion *wait) 3974 { 3975 int rc; 3976 3977 while (1) { 3978 if (wait_for_completion_io_timeout(wait, 3979 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) { 3980 rc = 0; 3981 break; 3982 } 3983 3984 pqi_check_ctrl_health(ctrl_info); 3985 if (pqi_ctrl_offline(ctrl_info)) { 3986 rc = -ENXIO; 3987 break; 3988 } 3989 } 3990 3991 return rc; 3992 } 3993 3994 static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request, 3995 void *context) 3996 { 3997 struct completion *waiting = context; 3998 3999 complete(waiting); 4000 } 4001 4002 static int pqi_process_raid_io_error_synchronous( 4003 struct pqi_raid_error_info *error_info) 4004 { 4005 int rc = -EIO; 4006 4007 switch (error_info->data_out_result) { 4008 case PQI_DATA_IN_OUT_GOOD: 4009 if (error_info->status == SAM_STAT_GOOD) 4010 rc = 0; 4011 break; 4012 case PQI_DATA_IN_OUT_UNDERFLOW: 4013 if (error_info->status == SAM_STAT_GOOD || 4014 error_info->status == SAM_STAT_CHECK_CONDITION) 4015 rc = 0; 4016 break; 4017 case PQI_DATA_IN_OUT_ABORTED: 4018 rc = PQI_CMD_STATUS_ABORTED; 4019 break; 4020 } 4021 4022 return rc; 4023 } 4024 4025 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, 4026 struct pqi_iu_header *request, unsigned int flags, 4027 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) 4028 { 4029 int rc = 0; 4030 struct pqi_io_request *io_request; 4031 unsigned long start_jiffies; 4032 unsigned long msecs_blocked; 4033 size_t iu_length; 4034 DECLARE_COMPLETION_ONSTACK(wait); 4035 4036 /* 4037 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value 4038 * are mutually exclusive. 4039 */ 4040 4041 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) { 4042 if (down_interruptible(&ctrl_info->sync_request_sem)) 4043 return -ERESTARTSYS; 4044 } else { 4045 if (timeout_msecs == NO_TIMEOUT) { 4046 down(&ctrl_info->sync_request_sem); 4047 } else { 4048 start_jiffies = jiffies; 4049 if (down_timeout(&ctrl_info->sync_request_sem, 4050 msecs_to_jiffies(timeout_msecs))) 4051 return -ETIMEDOUT; 4052 msecs_blocked = 4053 jiffies_to_msecs(jiffies - start_jiffies); 4054 if (msecs_blocked >= timeout_msecs) { 4055 rc = -ETIMEDOUT; 4056 goto out; 4057 } 4058 timeout_msecs -= msecs_blocked; 4059 } 4060 } 4061 4062 pqi_ctrl_busy(ctrl_info); 4063 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs); 4064 if (timeout_msecs == 0) { 4065 pqi_ctrl_unbusy(ctrl_info); 4066 rc = -ETIMEDOUT; 4067 goto out; 4068 } 4069 4070 if (pqi_ctrl_offline(ctrl_info)) { 4071 pqi_ctrl_unbusy(ctrl_info); 4072 rc = -ENXIO; 4073 goto out; 4074 } 4075 4076 atomic_inc(&ctrl_info->sync_cmds_outstanding); 4077 4078 io_request = pqi_alloc_io_request(ctrl_info); 4079 4080 put_unaligned_le16(io_request->index, 4081 &(((struct pqi_raid_path_request *)request)->request_id)); 4082 4083 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO) 4084 ((struct pqi_raid_path_request *)request)->error_index = 4085 ((struct pqi_raid_path_request *)request)->request_id; 4086 4087 iu_length = get_unaligned_le16(&request->iu_length) + 4088 PQI_REQUEST_HEADER_LENGTH; 4089 memcpy(io_request->iu, request, iu_length); 4090 4091 io_request->io_complete_callback = pqi_raid_synchronous_complete; 4092 io_request->context = &wait; 4093 4094 pqi_start_io(ctrl_info, 4095 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 4096 io_request); 4097 4098 pqi_ctrl_unbusy(ctrl_info); 4099 4100 if (timeout_msecs == NO_TIMEOUT) { 4101 pqi_wait_for_completion_io(ctrl_info, &wait); 4102 } else { 4103 if (!wait_for_completion_io_timeout(&wait, 4104 msecs_to_jiffies(timeout_msecs))) { 4105 dev_warn(&ctrl_info->pci_dev->dev, 4106 "command timed out\n"); 4107 rc = -ETIMEDOUT; 4108 } 4109 } 4110 4111 if (error_info) { 4112 if (io_request->error_info) 4113 memcpy(error_info, io_request->error_info, 4114 sizeof(*error_info)); 4115 else 4116 memset(error_info, 0, sizeof(*error_info)); 4117 } else if (rc == 0 && io_request->error_info) { 4118 rc = pqi_process_raid_io_error_synchronous( 4119 io_request->error_info); 4120 } 4121 4122 pqi_free_io_request(io_request); 4123 4124 atomic_dec(&ctrl_info->sync_cmds_outstanding); 4125 out: 4126 up(&ctrl_info->sync_request_sem); 4127 4128 return rc; 4129 } 4130 4131 static int pqi_validate_admin_response( 4132 struct pqi_general_admin_response *response, u8 expected_function_code) 4133 { 4134 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN) 4135 return -EINVAL; 4136 4137 if (get_unaligned_le16(&response->header.iu_length) != 4138 PQI_GENERAL_ADMIN_IU_LENGTH) 4139 return -EINVAL; 4140 4141 if (response->function_code != expected_function_code) 4142 return -EINVAL; 4143 4144 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) 4145 return -EINVAL; 4146 4147 return 0; 4148 } 4149 4150 static int pqi_submit_admin_request_synchronous( 4151 struct pqi_ctrl_info *ctrl_info, 4152 struct pqi_general_admin_request *request, 4153 struct pqi_general_admin_response *response) 4154 { 4155 int rc; 4156 4157 pqi_submit_admin_request(ctrl_info, request); 4158 4159 rc = pqi_poll_for_admin_response(ctrl_info, response); 4160 4161 if (rc == 0) 4162 rc = pqi_validate_admin_response(response, 4163 request->function_code); 4164 4165 return rc; 4166 } 4167 4168 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info) 4169 { 4170 int rc; 4171 struct pqi_general_admin_request request; 4172 struct pqi_general_admin_response response; 4173 struct pqi_device_capability *capability; 4174 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor; 4175 4176 capability = kmalloc(sizeof(*capability), GFP_KERNEL); 4177 if (!capability) 4178 return -ENOMEM; 4179 4180 memset(&request, 0, sizeof(request)); 4181 4182 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4183 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4184 &request.header.iu_length); 4185 request.function_code = 4186 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY; 4187 put_unaligned_le32(sizeof(*capability), 4188 &request.data.report_device_capability.buffer_length); 4189 4190 rc = pqi_map_single(ctrl_info->pci_dev, 4191 &request.data.report_device_capability.sg_descriptor, 4192 capability, sizeof(*capability), 4193 DMA_FROM_DEVICE); 4194 if (rc) 4195 goto out; 4196 4197 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4198 &response); 4199 4200 pqi_pci_unmap(ctrl_info->pci_dev, 4201 &request.data.report_device_capability.sg_descriptor, 1, 4202 DMA_FROM_DEVICE); 4203 4204 if (rc) 4205 goto out; 4206 4207 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) { 4208 rc = -EIO; 4209 goto out; 4210 } 4211 4212 ctrl_info->max_inbound_queues = 4213 get_unaligned_le16(&capability->max_inbound_queues); 4214 ctrl_info->max_elements_per_iq = 4215 get_unaligned_le16(&capability->max_elements_per_iq); 4216 ctrl_info->max_iq_element_length = 4217 get_unaligned_le16(&capability->max_iq_element_length) 4218 * 16; 4219 ctrl_info->max_outbound_queues = 4220 get_unaligned_le16(&capability->max_outbound_queues); 4221 ctrl_info->max_elements_per_oq = 4222 get_unaligned_le16(&capability->max_elements_per_oq); 4223 ctrl_info->max_oq_element_length = 4224 get_unaligned_le16(&capability->max_oq_element_length) 4225 * 16; 4226 4227 sop_iu_layer_descriptor = 4228 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP]; 4229 4230 ctrl_info->max_inbound_iu_length_per_firmware = 4231 get_unaligned_le16( 4232 &sop_iu_layer_descriptor->max_inbound_iu_length); 4233 ctrl_info->inbound_spanning_supported = 4234 sop_iu_layer_descriptor->inbound_spanning_supported; 4235 ctrl_info->outbound_spanning_supported = 4236 sop_iu_layer_descriptor->outbound_spanning_supported; 4237 4238 out: 4239 kfree(capability); 4240 4241 return rc; 4242 } 4243 4244 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info) 4245 { 4246 if (ctrl_info->max_iq_element_length < 4247 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 4248 dev_err(&ctrl_info->pci_dev->dev, 4249 "max. inbound queue element length of %d is less than the required length of %d\n", 4250 ctrl_info->max_iq_element_length, 4251 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4252 return -EINVAL; 4253 } 4254 4255 if (ctrl_info->max_oq_element_length < 4256 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) { 4257 dev_err(&ctrl_info->pci_dev->dev, 4258 "max. outbound queue element length of %d is less than the required length of %d\n", 4259 ctrl_info->max_oq_element_length, 4260 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 4261 return -EINVAL; 4262 } 4263 4264 if (ctrl_info->max_inbound_iu_length_per_firmware < 4265 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 4266 dev_err(&ctrl_info->pci_dev->dev, 4267 "max. inbound IU length of %u is less than the min. required length of %d\n", 4268 ctrl_info->max_inbound_iu_length_per_firmware, 4269 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4270 return -EINVAL; 4271 } 4272 4273 if (!ctrl_info->inbound_spanning_supported) { 4274 dev_err(&ctrl_info->pci_dev->dev, 4275 "the controller does not support inbound spanning\n"); 4276 return -EINVAL; 4277 } 4278 4279 if (ctrl_info->outbound_spanning_supported) { 4280 dev_err(&ctrl_info->pci_dev->dev, 4281 "the controller supports outbound spanning but this driver does not\n"); 4282 return -EINVAL; 4283 } 4284 4285 return 0; 4286 } 4287 4288 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info) 4289 { 4290 int rc; 4291 struct pqi_event_queue *event_queue; 4292 struct pqi_general_admin_request request; 4293 struct pqi_general_admin_response response; 4294 4295 event_queue = &ctrl_info->event_queue; 4296 4297 /* 4298 * Create OQ (Outbound Queue - device to host queue) to dedicate 4299 * to events. 4300 */ 4301 memset(&request, 0, sizeof(request)); 4302 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4303 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4304 &request.header.iu_length); 4305 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4306 put_unaligned_le16(event_queue->oq_id, 4307 &request.data.create_operational_oq.queue_id); 4308 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr, 4309 &request.data.create_operational_oq.element_array_addr); 4310 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr, 4311 &request.data.create_operational_oq.pi_addr); 4312 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS, 4313 &request.data.create_operational_oq.num_elements); 4314 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16, 4315 &request.data.create_operational_oq.element_length); 4316 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4317 put_unaligned_le16(event_queue->int_msg_num, 4318 &request.data.create_operational_oq.int_msg_num); 4319 4320 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4321 &response); 4322 if (rc) 4323 return rc; 4324 4325 event_queue->oq_ci = ctrl_info->iomem_base + 4326 PQI_DEVICE_REGISTERS_OFFSET + 4327 get_unaligned_le64( 4328 &response.data.create_operational_oq.oq_ci_offset); 4329 4330 return 0; 4331 } 4332 4333 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info, 4334 unsigned int group_number) 4335 { 4336 int rc; 4337 struct pqi_queue_group *queue_group; 4338 struct pqi_general_admin_request request; 4339 struct pqi_general_admin_response response; 4340 4341 queue_group = &ctrl_info->queue_groups[group_number]; 4342 4343 /* 4344 * Create IQ (Inbound Queue - host to device queue) for 4345 * RAID path. 4346 */ 4347 memset(&request, 0, sizeof(request)); 4348 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4349 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4350 &request.header.iu_length); 4351 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4352 put_unaligned_le16(queue_group->iq_id[RAID_PATH], 4353 &request.data.create_operational_iq.queue_id); 4354 put_unaligned_le64( 4355 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH], 4356 &request.data.create_operational_iq.element_array_addr); 4357 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH], 4358 &request.data.create_operational_iq.ci_addr); 4359 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4360 &request.data.create_operational_iq.num_elements); 4361 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4362 &request.data.create_operational_iq.element_length); 4363 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4364 4365 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4366 &response); 4367 if (rc) { 4368 dev_err(&ctrl_info->pci_dev->dev, 4369 "error creating inbound RAID queue\n"); 4370 return rc; 4371 } 4372 4373 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base + 4374 PQI_DEVICE_REGISTERS_OFFSET + 4375 get_unaligned_le64( 4376 &response.data.create_operational_iq.iq_pi_offset); 4377 4378 /* 4379 * Create IQ (Inbound Queue - host to device queue) for 4380 * Advanced I/O (AIO) path. 4381 */ 4382 memset(&request, 0, sizeof(request)); 4383 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4384 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4385 &request.header.iu_length); 4386 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4387 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4388 &request.data.create_operational_iq.queue_id); 4389 put_unaligned_le64((u64)queue_group-> 4390 iq_element_array_bus_addr[AIO_PATH], 4391 &request.data.create_operational_iq.element_array_addr); 4392 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH], 4393 &request.data.create_operational_iq.ci_addr); 4394 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4395 &request.data.create_operational_iq.num_elements); 4396 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4397 &request.data.create_operational_iq.element_length); 4398 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4399 4400 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4401 &response); 4402 if (rc) { 4403 dev_err(&ctrl_info->pci_dev->dev, 4404 "error creating inbound AIO queue\n"); 4405 return rc; 4406 } 4407 4408 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base + 4409 PQI_DEVICE_REGISTERS_OFFSET + 4410 get_unaligned_le64( 4411 &response.data.create_operational_iq.iq_pi_offset); 4412 4413 /* 4414 * Designate the 2nd IQ as the AIO path. By default, all IQs are 4415 * assumed to be for RAID path I/O unless we change the queue's 4416 * property. 4417 */ 4418 memset(&request, 0, sizeof(request)); 4419 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4420 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4421 &request.header.iu_length); 4422 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY; 4423 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4424 &request.data.change_operational_iq_properties.queue_id); 4425 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE, 4426 &request.data.change_operational_iq_properties.vendor_specific); 4427 4428 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4429 &response); 4430 if (rc) { 4431 dev_err(&ctrl_info->pci_dev->dev, 4432 "error changing queue property\n"); 4433 return rc; 4434 } 4435 4436 /* 4437 * Create OQ (Outbound Queue - device to host queue). 4438 */ 4439 memset(&request, 0, sizeof(request)); 4440 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4441 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4442 &request.header.iu_length); 4443 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4444 put_unaligned_le16(queue_group->oq_id, 4445 &request.data.create_operational_oq.queue_id); 4446 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr, 4447 &request.data.create_operational_oq.element_array_addr); 4448 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr, 4449 &request.data.create_operational_oq.pi_addr); 4450 put_unaligned_le16(ctrl_info->num_elements_per_oq, 4451 &request.data.create_operational_oq.num_elements); 4452 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16, 4453 &request.data.create_operational_oq.element_length); 4454 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4455 put_unaligned_le16(queue_group->int_msg_num, 4456 &request.data.create_operational_oq.int_msg_num); 4457 4458 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4459 &response); 4460 if (rc) { 4461 dev_err(&ctrl_info->pci_dev->dev, 4462 "error creating outbound queue\n"); 4463 return rc; 4464 } 4465 4466 queue_group->oq_ci = ctrl_info->iomem_base + 4467 PQI_DEVICE_REGISTERS_OFFSET + 4468 get_unaligned_le64( 4469 &response.data.create_operational_oq.oq_ci_offset); 4470 4471 return 0; 4472 } 4473 4474 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info) 4475 { 4476 int rc; 4477 unsigned int i; 4478 4479 rc = pqi_create_event_queue(ctrl_info); 4480 if (rc) { 4481 dev_err(&ctrl_info->pci_dev->dev, 4482 "error creating event queue\n"); 4483 return rc; 4484 } 4485 4486 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 4487 rc = pqi_create_queue_group(ctrl_info, i); 4488 if (rc) { 4489 dev_err(&ctrl_info->pci_dev->dev, 4490 "error creating queue group number %u/%u\n", 4491 i, ctrl_info->num_queue_groups); 4492 return rc; 4493 } 4494 } 4495 4496 return 0; 4497 } 4498 4499 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \ 4500 (offsetof(struct pqi_event_config, descriptors) + \ 4501 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor))) 4502 4503 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info, 4504 bool enable_events) 4505 { 4506 int rc; 4507 unsigned int i; 4508 struct pqi_event_config *event_config; 4509 struct pqi_event_descriptor *event_descriptor; 4510 struct pqi_general_management_request request; 4511 4512 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4513 GFP_KERNEL); 4514 if (!event_config) 4515 return -ENOMEM; 4516 4517 memset(&request, 0, sizeof(request)); 4518 4519 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG; 4520 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4521 data.report_event_configuration.sg_descriptors[1]) - 4522 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4523 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4524 &request.data.report_event_configuration.buffer_length); 4525 4526 rc = pqi_map_single(ctrl_info->pci_dev, 4527 request.data.report_event_configuration.sg_descriptors, 4528 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4529 DMA_FROM_DEVICE); 4530 if (rc) 4531 goto out; 4532 4533 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 4534 0, NULL, NO_TIMEOUT); 4535 4536 pqi_pci_unmap(ctrl_info->pci_dev, 4537 request.data.report_event_configuration.sg_descriptors, 1, 4538 DMA_FROM_DEVICE); 4539 4540 if (rc) 4541 goto out; 4542 4543 for (i = 0; i < event_config->num_event_descriptors; i++) { 4544 event_descriptor = &event_config->descriptors[i]; 4545 if (enable_events && 4546 pqi_is_supported_event(event_descriptor->event_type)) 4547 put_unaligned_le16(ctrl_info->event_queue.oq_id, 4548 &event_descriptor->oq_id); 4549 else 4550 put_unaligned_le16(0, &event_descriptor->oq_id); 4551 } 4552 4553 memset(&request, 0, sizeof(request)); 4554 4555 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG; 4556 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4557 data.report_event_configuration.sg_descriptors[1]) - 4558 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4559 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4560 &request.data.report_event_configuration.buffer_length); 4561 4562 rc = pqi_map_single(ctrl_info->pci_dev, 4563 request.data.report_event_configuration.sg_descriptors, 4564 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4565 DMA_TO_DEVICE); 4566 if (rc) 4567 goto out; 4568 4569 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 4570 NULL, NO_TIMEOUT); 4571 4572 pqi_pci_unmap(ctrl_info->pci_dev, 4573 request.data.report_event_configuration.sg_descriptors, 1, 4574 DMA_TO_DEVICE); 4575 4576 out: 4577 kfree(event_config); 4578 4579 return rc; 4580 } 4581 4582 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info) 4583 { 4584 return pqi_configure_events(ctrl_info, true); 4585 } 4586 4587 static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info) 4588 { 4589 return pqi_configure_events(ctrl_info, false); 4590 } 4591 4592 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info) 4593 { 4594 unsigned int i; 4595 struct device *dev; 4596 size_t sg_chain_buffer_length; 4597 struct pqi_io_request *io_request; 4598 4599 if (!ctrl_info->io_request_pool) 4600 return; 4601 4602 dev = &ctrl_info->pci_dev->dev; 4603 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4604 io_request = ctrl_info->io_request_pool; 4605 4606 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4607 kfree(io_request->iu); 4608 if (!io_request->sg_chain_buffer) 4609 break; 4610 dma_free_coherent(dev, sg_chain_buffer_length, 4611 io_request->sg_chain_buffer, 4612 io_request->sg_chain_buffer_dma_handle); 4613 io_request++; 4614 } 4615 4616 kfree(ctrl_info->io_request_pool); 4617 ctrl_info->io_request_pool = NULL; 4618 } 4619 4620 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info) 4621 { 4622 4623 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev, 4624 ctrl_info->error_buffer_length, 4625 &ctrl_info->error_buffer_dma_handle, 4626 GFP_KERNEL); 4627 if (!ctrl_info->error_buffer) 4628 return -ENOMEM; 4629 4630 return 0; 4631 } 4632 4633 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info) 4634 { 4635 unsigned int i; 4636 void *sg_chain_buffer; 4637 size_t sg_chain_buffer_length; 4638 dma_addr_t sg_chain_buffer_dma_handle; 4639 struct device *dev; 4640 struct pqi_io_request *io_request; 4641 4642 ctrl_info->io_request_pool = 4643 kcalloc(ctrl_info->max_io_slots, 4644 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL); 4645 4646 if (!ctrl_info->io_request_pool) { 4647 dev_err(&ctrl_info->pci_dev->dev, 4648 "failed to allocate I/O request pool\n"); 4649 goto error; 4650 } 4651 4652 dev = &ctrl_info->pci_dev->dev; 4653 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4654 io_request = ctrl_info->io_request_pool; 4655 4656 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4657 io_request->iu = 4658 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL); 4659 4660 if (!io_request->iu) { 4661 dev_err(&ctrl_info->pci_dev->dev, 4662 "failed to allocate IU buffers\n"); 4663 goto error; 4664 } 4665 4666 sg_chain_buffer = dma_alloc_coherent(dev, 4667 sg_chain_buffer_length, &sg_chain_buffer_dma_handle, 4668 GFP_KERNEL); 4669 4670 if (!sg_chain_buffer) { 4671 dev_err(&ctrl_info->pci_dev->dev, 4672 "failed to allocate PQI scatter-gather chain buffers\n"); 4673 goto error; 4674 } 4675 4676 io_request->index = i; 4677 io_request->sg_chain_buffer = sg_chain_buffer; 4678 io_request->sg_chain_buffer_dma_handle = 4679 sg_chain_buffer_dma_handle; 4680 io_request++; 4681 } 4682 4683 return 0; 4684 4685 error: 4686 pqi_free_all_io_requests(ctrl_info); 4687 4688 return -ENOMEM; 4689 } 4690 4691 /* 4692 * Calculate required resources that are sized based on max. outstanding 4693 * requests and max. transfer size. 4694 */ 4695 4696 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info) 4697 { 4698 u32 max_transfer_size; 4699 u32 max_sg_entries; 4700 4701 ctrl_info->scsi_ml_can_queue = 4702 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS; 4703 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests; 4704 4705 ctrl_info->error_buffer_length = 4706 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH; 4707 4708 if (reset_devices) 4709 max_transfer_size = min(ctrl_info->max_transfer_size, 4710 PQI_MAX_TRANSFER_SIZE_KDUMP); 4711 else 4712 max_transfer_size = min(ctrl_info->max_transfer_size, 4713 PQI_MAX_TRANSFER_SIZE); 4714 4715 max_sg_entries = max_transfer_size / PAGE_SIZE; 4716 4717 /* +1 to cover when the buffer is not page-aligned. */ 4718 max_sg_entries++; 4719 4720 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries); 4721 4722 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE; 4723 4724 ctrl_info->sg_chain_buffer_length = 4725 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) + 4726 PQI_EXTRA_SGL_MEMORY; 4727 ctrl_info->sg_tablesize = max_sg_entries; 4728 ctrl_info->max_sectors = max_transfer_size / 512; 4729 } 4730 4731 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info) 4732 { 4733 int num_queue_groups; 4734 u16 num_elements_per_iq; 4735 u16 num_elements_per_oq; 4736 4737 if (reset_devices) { 4738 num_queue_groups = 1; 4739 } else { 4740 int num_cpus; 4741 int max_queue_groups; 4742 4743 max_queue_groups = min(ctrl_info->max_inbound_queues / 2, 4744 ctrl_info->max_outbound_queues - 1); 4745 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS); 4746 4747 num_cpus = num_online_cpus(); 4748 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors); 4749 num_queue_groups = min(num_queue_groups, max_queue_groups); 4750 } 4751 4752 ctrl_info->num_queue_groups = num_queue_groups; 4753 ctrl_info->max_hw_queue_index = num_queue_groups - 1; 4754 4755 /* 4756 * Make sure that the max. inbound IU length is an even multiple 4757 * of our inbound element length. 4758 */ 4759 ctrl_info->max_inbound_iu_length = 4760 (ctrl_info->max_inbound_iu_length_per_firmware / 4761 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) * 4762 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 4763 4764 num_elements_per_iq = 4765 (ctrl_info->max_inbound_iu_length / 4766 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4767 4768 /* Add one because one element in each queue is unusable. */ 4769 num_elements_per_iq++; 4770 4771 num_elements_per_iq = min(num_elements_per_iq, 4772 ctrl_info->max_elements_per_iq); 4773 4774 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1; 4775 num_elements_per_oq = min(num_elements_per_oq, 4776 ctrl_info->max_elements_per_oq); 4777 4778 ctrl_info->num_elements_per_iq = num_elements_per_iq; 4779 ctrl_info->num_elements_per_oq = num_elements_per_oq; 4780 4781 ctrl_info->max_sg_per_iu = 4782 ((ctrl_info->max_inbound_iu_length - 4783 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) / 4784 sizeof(struct pqi_sg_descriptor)) + 4785 PQI_MAX_EMBEDDED_SG_DESCRIPTORS; 4786 } 4787 4788 static inline void pqi_set_sg_descriptor( 4789 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg) 4790 { 4791 u64 address = (u64)sg_dma_address(sg); 4792 unsigned int length = sg_dma_len(sg); 4793 4794 put_unaligned_le64(address, &sg_descriptor->address); 4795 put_unaligned_le32(length, &sg_descriptor->length); 4796 put_unaligned_le32(0, &sg_descriptor->flags); 4797 } 4798 4799 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info, 4800 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd, 4801 struct pqi_io_request *io_request) 4802 { 4803 int i; 4804 u16 iu_length; 4805 int sg_count; 4806 bool chained; 4807 unsigned int num_sg_in_iu; 4808 unsigned int max_sg_per_iu; 4809 struct scatterlist *sg; 4810 struct pqi_sg_descriptor *sg_descriptor; 4811 4812 sg_count = scsi_dma_map(scmd); 4813 if (sg_count < 0) 4814 return sg_count; 4815 4816 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 4817 PQI_REQUEST_HEADER_LENGTH; 4818 4819 if (sg_count == 0) 4820 goto out; 4821 4822 sg = scsi_sglist(scmd); 4823 sg_descriptor = request->sg_descriptors; 4824 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4825 chained = false; 4826 num_sg_in_iu = 0; 4827 i = 0; 4828 4829 while (1) { 4830 pqi_set_sg_descriptor(sg_descriptor, sg); 4831 if (!chained) 4832 num_sg_in_iu++; 4833 i++; 4834 if (i == sg_count) 4835 break; 4836 sg_descriptor++; 4837 if (i == max_sg_per_iu) { 4838 put_unaligned_le64( 4839 (u64)io_request->sg_chain_buffer_dma_handle, 4840 &sg_descriptor->address); 4841 put_unaligned_le32((sg_count - num_sg_in_iu) 4842 * sizeof(*sg_descriptor), 4843 &sg_descriptor->length); 4844 put_unaligned_le32(CISS_SG_CHAIN, 4845 &sg_descriptor->flags); 4846 chained = true; 4847 num_sg_in_iu++; 4848 sg_descriptor = io_request->sg_chain_buffer; 4849 } 4850 sg = sg_next(sg); 4851 } 4852 4853 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4854 request->partial = chained; 4855 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4856 4857 out: 4858 put_unaligned_le16(iu_length, &request->header.iu_length); 4859 4860 return 0; 4861 } 4862 4863 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info, 4864 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd, 4865 struct pqi_io_request *io_request) 4866 { 4867 int i; 4868 u16 iu_length; 4869 int sg_count; 4870 bool chained; 4871 unsigned int num_sg_in_iu; 4872 unsigned int max_sg_per_iu; 4873 struct scatterlist *sg; 4874 struct pqi_sg_descriptor *sg_descriptor; 4875 4876 sg_count = scsi_dma_map(scmd); 4877 if (sg_count < 0) 4878 return sg_count; 4879 4880 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) - 4881 PQI_REQUEST_HEADER_LENGTH; 4882 num_sg_in_iu = 0; 4883 4884 if (sg_count == 0) 4885 goto out; 4886 4887 sg = scsi_sglist(scmd); 4888 sg_descriptor = request->sg_descriptors; 4889 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4890 chained = false; 4891 i = 0; 4892 4893 while (1) { 4894 pqi_set_sg_descriptor(sg_descriptor, sg); 4895 if (!chained) 4896 num_sg_in_iu++; 4897 i++; 4898 if (i == sg_count) 4899 break; 4900 sg_descriptor++; 4901 if (i == max_sg_per_iu) { 4902 put_unaligned_le64( 4903 (u64)io_request->sg_chain_buffer_dma_handle, 4904 &sg_descriptor->address); 4905 put_unaligned_le32((sg_count - num_sg_in_iu) 4906 * sizeof(*sg_descriptor), 4907 &sg_descriptor->length); 4908 put_unaligned_le32(CISS_SG_CHAIN, 4909 &sg_descriptor->flags); 4910 chained = true; 4911 num_sg_in_iu++; 4912 sg_descriptor = io_request->sg_chain_buffer; 4913 } 4914 sg = sg_next(sg); 4915 } 4916 4917 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4918 request->partial = chained; 4919 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4920 4921 out: 4922 put_unaligned_le16(iu_length, &request->header.iu_length); 4923 request->num_sg_descriptors = num_sg_in_iu; 4924 4925 return 0; 4926 } 4927 4928 static void pqi_raid_io_complete(struct pqi_io_request *io_request, 4929 void *context) 4930 { 4931 struct scsi_cmnd *scmd; 4932 4933 scmd = io_request->scmd; 4934 pqi_free_io_request(io_request); 4935 scsi_dma_unmap(scmd); 4936 pqi_scsi_done(scmd); 4937 } 4938 4939 static int pqi_raid_submit_scsi_cmd_with_io_request( 4940 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request, 4941 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 4942 struct pqi_queue_group *queue_group) 4943 { 4944 int rc; 4945 size_t cdb_length; 4946 struct pqi_raid_path_request *request; 4947 4948 io_request->io_complete_callback = pqi_raid_io_complete; 4949 io_request->scmd = scmd; 4950 4951 request = io_request->iu; 4952 memset(request, 0, 4953 offsetof(struct pqi_raid_path_request, sg_descriptors)); 4954 4955 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 4956 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 4957 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 4958 put_unaligned_le16(io_request->index, &request->request_id); 4959 request->error_index = request->request_id; 4960 memcpy(request->lun_number, device->scsi3addr, 4961 sizeof(request->lun_number)); 4962 4963 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb)); 4964 memcpy(request->cdb, scmd->cmnd, cdb_length); 4965 4966 switch (cdb_length) { 4967 case 6: 4968 case 10: 4969 case 12: 4970 case 16: 4971 /* No bytes in the Additional CDB bytes field */ 4972 request->additional_cdb_bytes_usage = 4973 SOP_ADDITIONAL_CDB_BYTES_0; 4974 break; 4975 case 20: 4976 /* 4 bytes in the Additional cdb field */ 4977 request->additional_cdb_bytes_usage = 4978 SOP_ADDITIONAL_CDB_BYTES_4; 4979 break; 4980 case 24: 4981 /* 8 bytes in the Additional cdb field */ 4982 request->additional_cdb_bytes_usage = 4983 SOP_ADDITIONAL_CDB_BYTES_8; 4984 break; 4985 case 28: 4986 /* 12 bytes in the Additional cdb field */ 4987 request->additional_cdb_bytes_usage = 4988 SOP_ADDITIONAL_CDB_BYTES_12; 4989 break; 4990 case 32: 4991 default: 4992 /* 16 bytes in the Additional cdb field */ 4993 request->additional_cdb_bytes_usage = 4994 SOP_ADDITIONAL_CDB_BYTES_16; 4995 break; 4996 } 4997 4998 switch (scmd->sc_data_direction) { 4999 case DMA_TO_DEVICE: 5000 request->data_direction = SOP_READ_FLAG; 5001 break; 5002 case DMA_FROM_DEVICE: 5003 request->data_direction = SOP_WRITE_FLAG; 5004 break; 5005 case DMA_NONE: 5006 request->data_direction = SOP_NO_DIRECTION_FLAG; 5007 break; 5008 case DMA_BIDIRECTIONAL: 5009 request->data_direction = SOP_BIDIRECTIONAL; 5010 break; 5011 default: 5012 dev_err(&ctrl_info->pci_dev->dev, 5013 "unknown data direction: %d\n", 5014 scmd->sc_data_direction); 5015 break; 5016 } 5017 5018 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request); 5019 if (rc) { 5020 pqi_free_io_request(io_request); 5021 return SCSI_MLQUEUE_HOST_BUSY; 5022 } 5023 5024 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request); 5025 5026 return 0; 5027 } 5028 5029 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 5030 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 5031 struct pqi_queue_group *queue_group) 5032 { 5033 struct pqi_io_request *io_request; 5034 5035 io_request = pqi_alloc_io_request(ctrl_info); 5036 5037 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 5038 device, scmd, queue_group); 5039 } 5040 5041 static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info) 5042 { 5043 if (!pqi_ctrl_blocked(ctrl_info)) 5044 schedule_work(&ctrl_info->raid_bypass_retry_work); 5045 } 5046 5047 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request) 5048 { 5049 struct scsi_cmnd *scmd; 5050 struct pqi_scsi_dev *device; 5051 struct pqi_ctrl_info *ctrl_info; 5052 5053 if (!io_request->raid_bypass) 5054 return false; 5055 5056 scmd = io_request->scmd; 5057 if ((scmd->result & 0xff) == SAM_STAT_GOOD) 5058 return false; 5059 if (host_byte(scmd->result) == DID_NO_CONNECT) 5060 return false; 5061 5062 device = scmd->device->hostdata; 5063 if (pqi_device_offline(device)) 5064 return false; 5065 5066 ctrl_info = shost_to_hba(scmd->device->host); 5067 if (pqi_ctrl_offline(ctrl_info)) 5068 return false; 5069 5070 return true; 5071 } 5072 5073 static inline void pqi_add_to_raid_bypass_retry_list( 5074 struct pqi_ctrl_info *ctrl_info, 5075 struct pqi_io_request *io_request, bool at_head) 5076 { 5077 unsigned long flags; 5078 5079 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5080 if (at_head) 5081 list_add(&io_request->request_list_entry, 5082 &ctrl_info->raid_bypass_retry_list); 5083 else 5084 list_add_tail(&io_request->request_list_entry, 5085 &ctrl_info->raid_bypass_retry_list); 5086 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5087 } 5088 5089 static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request, 5090 void *context) 5091 { 5092 struct scsi_cmnd *scmd; 5093 5094 scmd = io_request->scmd; 5095 pqi_free_io_request(io_request); 5096 pqi_scsi_done(scmd); 5097 } 5098 5099 static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request) 5100 { 5101 struct scsi_cmnd *scmd; 5102 struct pqi_ctrl_info *ctrl_info; 5103 5104 io_request->io_complete_callback = pqi_queued_raid_bypass_complete; 5105 scmd = io_request->scmd; 5106 scmd->result = 0; 5107 ctrl_info = shost_to_hba(scmd->device->host); 5108 5109 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false); 5110 pqi_schedule_bypass_retry(ctrl_info); 5111 } 5112 5113 static int pqi_retry_raid_bypass(struct pqi_io_request *io_request) 5114 { 5115 struct scsi_cmnd *scmd; 5116 struct pqi_scsi_dev *device; 5117 struct pqi_ctrl_info *ctrl_info; 5118 struct pqi_queue_group *queue_group; 5119 5120 scmd = io_request->scmd; 5121 device = scmd->device->hostdata; 5122 if (pqi_device_in_reset(device)) { 5123 pqi_free_io_request(io_request); 5124 set_host_byte(scmd, DID_RESET); 5125 pqi_scsi_done(scmd); 5126 return 0; 5127 } 5128 5129 ctrl_info = shost_to_hba(scmd->device->host); 5130 queue_group = io_request->queue_group; 5131 5132 pqi_reinit_io_request(io_request); 5133 5134 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 5135 device, scmd, queue_group); 5136 } 5137 5138 static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request( 5139 struct pqi_ctrl_info *ctrl_info) 5140 { 5141 unsigned long flags; 5142 struct pqi_io_request *io_request; 5143 5144 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5145 io_request = list_first_entry_or_null( 5146 &ctrl_info->raid_bypass_retry_list, 5147 struct pqi_io_request, request_list_entry); 5148 if (io_request) 5149 list_del(&io_request->request_list_entry); 5150 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5151 5152 return io_request; 5153 } 5154 5155 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info) 5156 { 5157 int rc; 5158 struct pqi_io_request *io_request; 5159 5160 pqi_ctrl_busy(ctrl_info); 5161 5162 while (1) { 5163 if (pqi_ctrl_blocked(ctrl_info)) 5164 break; 5165 io_request = pqi_next_queued_raid_bypass_request(ctrl_info); 5166 if (!io_request) 5167 break; 5168 rc = pqi_retry_raid_bypass(io_request); 5169 if (rc) { 5170 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, 5171 true); 5172 pqi_schedule_bypass_retry(ctrl_info); 5173 break; 5174 } 5175 } 5176 5177 pqi_ctrl_unbusy(ctrl_info); 5178 } 5179 5180 static void pqi_raid_bypass_retry_worker(struct work_struct *work) 5181 { 5182 struct pqi_ctrl_info *ctrl_info; 5183 5184 ctrl_info = container_of(work, struct pqi_ctrl_info, 5185 raid_bypass_retry_work); 5186 pqi_retry_raid_bypass_requests(ctrl_info); 5187 } 5188 5189 static void pqi_clear_all_queued_raid_bypass_retries( 5190 struct pqi_ctrl_info *ctrl_info) 5191 { 5192 unsigned long flags; 5193 5194 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5195 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 5196 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5197 } 5198 5199 static void pqi_aio_io_complete(struct pqi_io_request *io_request, 5200 void *context) 5201 { 5202 struct scsi_cmnd *scmd; 5203 5204 scmd = io_request->scmd; 5205 scsi_dma_unmap(scmd); 5206 if (io_request->status == -EAGAIN) 5207 set_host_byte(scmd, DID_IMM_RETRY); 5208 else if (pqi_raid_bypass_retry_needed(io_request)) { 5209 pqi_queue_raid_bypass_retry(io_request); 5210 return; 5211 } 5212 pqi_free_io_request(io_request); 5213 pqi_scsi_done(scmd); 5214 } 5215 5216 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 5217 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 5218 struct pqi_queue_group *queue_group) 5219 { 5220 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle, 5221 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false); 5222 } 5223 5224 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, 5225 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, 5226 unsigned int cdb_length, struct pqi_queue_group *queue_group, 5227 struct pqi_encryption_info *encryption_info, bool raid_bypass) 5228 { 5229 int rc; 5230 struct pqi_io_request *io_request; 5231 struct pqi_aio_path_request *request; 5232 5233 io_request = pqi_alloc_io_request(ctrl_info); 5234 io_request->io_complete_callback = pqi_aio_io_complete; 5235 io_request->scmd = scmd; 5236 io_request->raid_bypass = raid_bypass; 5237 5238 request = io_request->iu; 5239 memset(request, 0, 5240 offsetof(struct pqi_raid_path_request, sg_descriptors)); 5241 5242 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO; 5243 put_unaligned_le32(aio_handle, &request->nexus_id); 5244 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 5245 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 5246 put_unaligned_le16(io_request->index, &request->request_id); 5247 request->error_index = request->request_id; 5248 if (cdb_length > sizeof(request->cdb)) 5249 cdb_length = sizeof(request->cdb); 5250 request->cdb_length = cdb_length; 5251 memcpy(request->cdb, cdb, cdb_length); 5252 5253 switch (scmd->sc_data_direction) { 5254 case DMA_TO_DEVICE: 5255 request->data_direction = SOP_READ_FLAG; 5256 break; 5257 case DMA_FROM_DEVICE: 5258 request->data_direction = SOP_WRITE_FLAG; 5259 break; 5260 case DMA_NONE: 5261 request->data_direction = SOP_NO_DIRECTION_FLAG; 5262 break; 5263 case DMA_BIDIRECTIONAL: 5264 request->data_direction = SOP_BIDIRECTIONAL; 5265 break; 5266 default: 5267 dev_err(&ctrl_info->pci_dev->dev, 5268 "unknown data direction: %d\n", 5269 scmd->sc_data_direction); 5270 break; 5271 } 5272 5273 if (encryption_info) { 5274 request->encryption_enable = true; 5275 put_unaligned_le16(encryption_info->data_encryption_key_index, 5276 &request->data_encryption_key_index); 5277 put_unaligned_le32(encryption_info->encrypt_tweak_lower, 5278 &request->encrypt_tweak_lower); 5279 put_unaligned_le32(encryption_info->encrypt_tweak_upper, 5280 &request->encrypt_tweak_upper); 5281 } 5282 5283 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request); 5284 if (rc) { 5285 pqi_free_io_request(io_request); 5286 return SCSI_MLQUEUE_HOST_BUSY; 5287 } 5288 5289 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request); 5290 5291 return 0; 5292 } 5293 5294 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info, 5295 struct scsi_cmnd *scmd) 5296 { 5297 u16 hw_queue; 5298 5299 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request)); 5300 if (hw_queue > ctrl_info->max_hw_queue_index) 5301 hw_queue = 0; 5302 5303 return hw_queue; 5304 } 5305 5306 /* 5307 * This function gets called just before we hand the completed SCSI request 5308 * back to the SML. 5309 */ 5310 5311 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd) 5312 { 5313 struct pqi_scsi_dev *device; 5314 5315 if (!scmd->device) { 5316 set_host_byte(scmd, DID_NO_CONNECT); 5317 return; 5318 } 5319 5320 device = scmd->device->hostdata; 5321 if (!device) { 5322 set_host_byte(scmd, DID_NO_CONNECT); 5323 return; 5324 } 5325 5326 atomic_dec(&device->scsi_cmds_outstanding); 5327 } 5328 5329 static int pqi_scsi_queue_command(struct Scsi_Host *shost, 5330 struct scsi_cmnd *scmd) 5331 { 5332 int rc; 5333 struct pqi_ctrl_info *ctrl_info; 5334 struct pqi_scsi_dev *device; 5335 u16 hw_queue; 5336 struct pqi_queue_group *queue_group; 5337 bool raid_bypassed; 5338 5339 device = scmd->device->hostdata; 5340 ctrl_info = shost_to_hba(shost); 5341 5342 if (!device) { 5343 set_host_byte(scmd, DID_NO_CONNECT); 5344 pqi_scsi_done(scmd); 5345 return 0; 5346 } 5347 5348 atomic_inc(&device->scsi_cmds_outstanding); 5349 5350 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(ctrl_info, 5351 device)) { 5352 set_host_byte(scmd, DID_NO_CONNECT); 5353 pqi_scsi_done(scmd); 5354 return 0; 5355 } 5356 5357 pqi_ctrl_busy(ctrl_info); 5358 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) || 5359 pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) { 5360 rc = SCSI_MLQUEUE_HOST_BUSY; 5361 goto out; 5362 } 5363 5364 /* 5365 * This is necessary because the SML doesn't zero out this field during 5366 * error recovery. 5367 */ 5368 scmd->result = 0; 5369 5370 hw_queue = pqi_get_hw_queue(ctrl_info, scmd); 5371 queue_group = &ctrl_info->queue_groups[hw_queue]; 5372 5373 if (pqi_is_logical_device(device)) { 5374 raid_bypassed = false; 5375 if (device->raid_bypass_enabled && 5376 !blk_rq_is_passthrough(scmd->request)) { 5377 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, 5378 scmd, queue_group); 5379 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) { 5380 raid_bypassed = true; 5381 atomic_inc(&device->raid_bypass_cnt); 5382 } 5383 } 5384 if (!raid_bypassed) 5385 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group); 5386 } else { 5387 if (device->aio_enabled) 5388 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, queue_group); 5389 else 5390 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group); 5391 } 5392 5393 out: 5394 pqi_ctrl_unbusy(ctrl_info); 5395 if (rc) 5396 atomic_dec(&device->scsi_cmds_outstanding); 5397 5398 return rc; 5399 } 5400 5401 static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info, 5402 struct pqi_queue_group *queue_group) 5403 { 5404 unsigned int path; 5405 unsigned long flags; 5406 bool list_is_empty; 5407 5408 for (path = 0; path < 2; path++) { 5409 while (1) { 5410 spin_lock_irqsave( 5411 &queue_group->submit_lock[path], flags); 5412 list_is_empty = 5413 list_empty(&queue_group->request_list[path]); 5414 spin_unlock_irqrestore( 5415 &queue_group->submit_lock[path], flags); 5416 if (list_is_empty) 5417 break; 5418 pqi_check_ctrl_health(ctrl_info); 5419 if (pqi_ctrl_offline(ctrl_info)) 5420 return -ENXIO; 5421 usleep_range(1000, 2000); 5422 } 5423 } 5424 5425 return 0; 5426 } 5427 5428 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info) 5429 { 5430 int rc; 5431 unsigned int i; 5432 unsigned int path; 5433 struct pqi_queue_group *queue_group; 5434 pqi_index_t iq_pi; 5435 pqi_index_t iq_ci; 5436 5437 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5438 queue_group = &ctrl_info->queue_groups[i]; 5439 5440 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group); 5441 if (rc) 5442 return rc; 5443 5444 for (path = 0; path < 2; path++) { 5445 iq_pi = queue_group->iq_pi_copy[path]; 5446 5447 while (1) { 5448 iq_ci = readl(queue_group->iq_ci[path]); 5449 if (iq_ci == iq_pi) 5450 break; 5451 pqi_check_ctrl_health(ctrl_info); 5452 if (pqi_ctrl_offline(ctrl_info)) 5453 return -ENXIO; 5454 usleep_range(1000, 2000); 5455 } 5456 } 5457 } 5458 5459 return 0; 5460 } 5461 5462 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info, 5463 struct pqi_scsi_dev *device) 5464 { 5465 unsigned int i; 5466 unsigned int path; 5467 struct pqi_queue_group *queue_group; 5468 unsigned long flags; 5469 struct pqi_io_request *io_request; 5470 struct pqi_io_request *next; 5471 struct scsi_cmnd *scmd; 5472 struct pqi_scsi_dev *scsi_device; 5473 5474 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5475 queue_group = &ctrl_info->queue_groups[i]; 5476 5477 for (path = 0; path < 2; path++) { 5478 spin_lock_irqsave( 5479 &queue_group->submit_lock[path], flags); 5480 5481 list_for_each_entry_safe(io_request, next, 5482 &queue_group->request_list[path], 5483 request_list_entry) { 5484 scmd = io_request->scmd; 5485 if (!scmd) 5486 continue; 5487 5488 scsi_device = scmd->device->hostdata; 5489 if (scsi_device != device) 5490 continue; 5491 5492 list_del(&io_request->request_list_entry); 5493 set_host_byte(scmd, DID_RESET); 5494 pqi_scsi_done(scmd); 5495 } 5496 5497 spin_unlock_irqrestore( 5498 &queue_group->submit_lock[path], flags); 5499 } 5500 } 5501 } 5502 5503 static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info) 5504 { 5505 unsigned int i; 5506 unsigned int path; 5507 struct pqi_queue_group *queue_group; 5508 unsigned long flags; 5509 struct pqi_io_request *io_request; 5510 struct pqi_io_request *next; 5511 struct scsi_cmnd *scmd; 5512 5513 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5514 queue_group = &ctrl_info->queue_groups[i]; 5515 5516 for (path = 0; path < 2; path++) { 5517 spin_lock_irqsave(&queue_group->submit_lock[path], 5518 flags); 5519 5520 list_for_each_entry_safe(io_request, next, 5521 &queue_group->request_list[path], 5522 request_list_entry) { 5523 5524 scmd = io_request->scmd; 5525 if (!scmd) 5526 continue; 5527 5528 list_del(&io_request->request_list_entry); 5529 set_host_byte(scmd, DID_RESET); 5530 pqi_scsi_done(scmd); 5531 } 5532 5533 spin_unlock_irqrestore( 5534 &queue_group->submit_lock[path], flags); 5535 } 5536 } 5537 } 5538 5539 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5540 struct pqi_scsi_dev *device, unsigned long timeout_secs) 5541 { 5542 unsigned long timeout; 5543 5544 timeout = (timeout_secs * PQI_HZ) + jiffies; 5545 5546 while (atomic_read(&device->scsi_cmds_outstanding)) { 5547 pqi_check_ctrl_health(ctrl_info); 5548 if (pqi_ctrl_offline(ctrl_info)) 5549 return -ENXIO; 5550 if (timeout_secs != NO_TIMEOUT) { 5551 if (time_after(jiffies, timeout)) { 5552 dev_err(&ctrl_info->pci_dev->dev, 5553 "timed out waiting for pending IO\n"); 5554 return -ETIMEDOUT; 5555 } 5556 } 5557 usleep_range(1000, 2000); 5558 } 5559 5560 return 0; 5561 } 5562 5563 static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5564 unsigned long timeout_secs) 5565 { 5566 bool io_pending; 5567 unsigned long flags; 5568 unsigned long timeout; 5569 struct pqi_scsi_dev *device; 5570 5571 timeout = (timeout_secs * PQI_HZ) + jiffies; 5572 while (1) { 5573 io_pending = false; 5574 5575 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5576 list_for_each_entry(device, &ctrl_info->scsi_device_list, 5577 scsi_device_list_entry) { 5578 if (atomic_read(&device->scsi_cmds_outstanding)) { 5579 io_pending = true; 5580 break; 5581 } 5582 } 5583 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 5584 flags); 5585 5586 if (!io_pending) 5587 break; 5588 5589 pqi_check_ctrl_health(ctrl_info); 5590 if (pqi_ctrl_offline(ctrl_info)) 5591 return -ENXIO; 5592 5593 if (timeout_secs != NO_TIMEOUT) { 5594 if (time_after(jiffies, timeout)) { 5595 dev_err(&ctrl_info->pci_dev->dev, 5596 "timed out waiting for pending IO\n"); 5597 return -ETIMEDOUT; 5598 } 5599 } 5600 usleep_range(1000, 2000); 5601 } 5602 5603 return 0; 5604 } 5605 5606 static int pqi_ctrl_wait_for_pending_sync_cmds(struct pqi_ctrl_info *ctrl_info) 5607 { 5608 while (atomic_read(&ctrl_info->sync_cmds_outstanding)) { 5609 pqi_check_ctrl_health(ctrl_info); 5610 if (pqi_ctrl_offline(ctrl_info)) 5611 return -ENXIO; 5612 usleep_range(1000, 2000); 5613 } 5614 5615 return 0; 5616 } 5617 5618 static void pqi_lun_reset_complete(struct pqi_io_request *io_request, 5619 void *context) 5620 { 5621 struct completion *waiting = context; 5622 5623 complete(waiting); 5624 } 5625 5626 #define PQI_LUN_RESET_TIMEOUT_SECS 30 5627 #define PQI_LUN_RESET_POLL_COMPLETION_SECS 10 5628 5629 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info, 5630 struct pqi_scsi_dev *device, struct completion *wait) 5631 { 5632 int rc; 5633 5634 while (1) { 5635 if (wait_for_completion_io_timeout(wait, 5636 PQI_LUN_RESET_POLL_COMPLETION_SECS * PQI_HZ)) { 5637 rc = 0; 5638 break; 5639 } 5640 5641 pqi_check_ctrl_health(ctrl_info); 5642 if (pqi_ctrl_offline(ctrl_info)) { 5643 rc = -ENXIO; 5644 break; 5645 } 5646 } 5647 5648 return rc; 5649 } 5650 5651 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, 5652 struct pqi_scsi_dev *device) 5653 { 5654 int rc; 5655 struct pqi_io_request *io_request; 5656 DECLARE_COMPLETION_ONSTACK(wait); 5657 struct pqi_task_management_request *request; 5658 5659 io_request = pqi_alloc_io_request(ctrl_info); 5660 io_request->io_complete_callback = pqi_lun_reset_complete; 5661 io_request->context = &wait; 5662 5663 request = io_request->iu; 5664 memset(request, 0, sizeof(*request)); 5665 5666 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT; 5667 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH, 5668 &request->header.iu_length); 5669 put_unaligned_le16(io_request->index, &request->request_id); 5670 memcpy(request->lun_number, device->scsi3addr, 5671 sizeof(request->lun_number)); 5672 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET; 5673 if (ctrl_info->tmf_iu_timeout_supported) 5674 put_unaligned_le16(PQI_LUN_RESET_TIMEOUT_SECS, 5675 &request->timeout); 5676 5677 pqi_start_io(ctrl_info, 5678 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 5679 io_request); 5680 5681 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait); 5682 if (rc == 0) 5683 rc = io_request->status; 5684 5685 pqi_free_io_request(io_request); 5686 5687 return rc; 5688 } 5689 5690 /* Performs a reset at the LUN level. */ 5691 5692 #define PQI_LUN_RESET_RETRIES 3 5693 #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000 5694 #define PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS 120 5695 5696 static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5697 struct pqi_scsi_dev *device) 5698 { 5699 int rc; 5700 unsigned int retries; 5701 unsigned long timeout_secs; 5702 5703 for (retries = 0;;) { 5704 rc = pqi_lun_reset(ctrl_info, device); 5705 if (rc == 0 || ++retries > PQI_LUN_RESET_RETRIES) 5706 break; 5707 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS); 5708 } 5709 5710 timeout_secs = rc ? PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS : NO_TIMEOUT; 5711 5712 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs); 5713 5714 return rc == 0 ? SUCCESS : FAILED; 5715 } 5716 5717 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5718 struct pqi_scsi_dev *device) 5719 { 5720 int rc; 5721 5722 mutex_lock(&ctrl_info->lun_reset_mutex); 5723 5724 pqi_ctrl_block_requests(ctrl_info); 5725 pqi_ctrl_wait_until_quiesced(ctrl_info); 5726 pqi_fail_io_queued_for_device(ctrl_info, device); 5727 rc = pqi_wait_until_inbound_queues_empty(ctrl_info); 5728 pqi_device_reset_start(device); 5729 pqi_ctrl_unblock_requests(ctrl_info); 5730 5731 if (rc) 5732 rc = FAILED; 5733 else 5734 rc = _pqi_device_reset(ctrl_info, device); 5735 5736 pqi_device_reset_done(device); 5737 5738 mutex_unlock(&ctrl_info->lun_reset_mutex); 5739 5740 return rc; 5741 } 5742 5743 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd) 5744 { 5745 int rc; 5746 struct Scsi_Host *shost; 5747 struct pqi_ctrl_info *ctrl_info; 5748 struct pqi_scsi_dev *device; 5749 5750 shost = scmd->device->host; 5751 ctrl_info = shost_to_hba(shost); 5752 device = scmd->device->hostdata; 5753 5754 dev_err(&ctrl_info->pci_dev->dev, 5755 "resetting scsi %d:%d:%d:%d\n", 5756 shost->host_no, device->bus, device->target, device->lun); 5757 5758 pqi_check_ctrl_health(ctrl_info); 5759 if (pqi_ctrl_offline(ctrl_info) || 5760 pqi_device_reset_blocked(ctrl_info)) { 5761 rc = FAILED; 5762 goto out; 5763 } 5764 5765 pqi_wait_until_ofa_finished(ctrl_info); 5766 5767 atomic_inc(&ctrl_info->sync_cmds_outstanding); 5768 rc = pqi_device_reset(ctrl_info, device); 5769 atomic_dec(&ctrl_info->sync_cmds_outstanding); 5770 5771 out: 5772 dev_err(&ctrl_info->pci_dev->dev, 5773 "reset of scsi %d:%d:%d:%d: %s\n", 5774 shost->host_no, device->bus, device->target, device->lun, 5775 rc == SUCCESS ? "SUCCESS" : "FAILED"); 5776 5777 return rc; 5778 } 5779 5780 static int pqi_slave_alloc(struct scsi_device *sdev) 5781 { 5782 struct pqi_scsi_dev *device; 5783 unsigned long flags; 5784 struct pqi_ctrl_info *ctrl_info; 5785 struct scsi_target *starget; 5786 struct sas_rphy *rphy; 5787 5788 ctrl_info = shost_to_hba(sdev->host); 5789 5790 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5791 5792 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) { 5793 starget = scsi_target(sdev); 5794 rphy = target_to_rphy(starget); 5795 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy); 5796 if (device) { 5797 device->target = sdev_id(sdev); 5798 device->lun = sdev->lun; 5799 device->target_lun_valid = true; 5800 } 5801 } else { 5802 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev), 5803 sdev_id(sdev), sdev->lun); 5804 } 5805 5806 if (device) { 5807 sdev->hostdata = device; 5808 device->sdev = sdev; 5809 if (device->queue_depth) { 5810 device->advertised_queue_depth = device->queue_depth; 5811 scsi_change_queue_depth(sdev, 5812 device->advertised_queue_depth); 5813 } 5814 if (pqi_is_logical_device(device)) 5815 pqi_disable_write_same(sdev); 5816 else 5817 sdev->allow_restart = 1; 5818 } 5819 5820 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5821 5822 return 0; 5823 } 5824 5825 static int pqi_map_queues(struct Scsi_Host *shost) 5826 { 5827 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost); 5828 5829 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT], 5830 ctrl_info->pci_dev, 0); 5831 } 5832 5833 static int pqi_slave_configure(struct scsi_device *sdev) 5834 { 5835 struct pqi_scsi_dev *device; 5836 5837 device = sdev->hostdata; 5838 device->devtype = sdev->type; 5839 5840 return 0; 5841 } 5842 5843 static void pqi_slave_destroy(struct scsi_device *sdev) 5844 { 5845 unsigned long flags; 5846 struct pqi_scsi_dev *device; 5847 struct pqi_ctrl_info *ctrl_info; 5848 5849 ctrl_info = shost_to_hba(sdev->host); 5850 5851 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5852 5853 device = sdev->hostdata; 5854 if (device) { 5855 sdev->hostdata = NULL; 5856 if (!list_empty(&device->scsi_device_list_entry)) 5857 list_del(&device->scsi_device_list_entry); 5858 } 5859 5860 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5861 5862 if (device) { 5863 pqi_dev_info(ctrl_info, "removed", device); 5864 pqi_free_device(device); 5865 } 5866 } 5867 5868 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg) 5869 { 5870 struct pci_dev *pci_dev; 5871 u32 subsystem_vendor; 5872 u32 subsystem_device; 5873 cciss_pci_info_struct pciinfo; 5874 5875 if (!arg) 5876 return -EINVAL; 5877 5878 pci_dev = ctrl_info->pci_dev; 5879 5880 pciinfo.domain = pci_domain_nr(pci_dev->bus); 5881 pciinfo.bus = pci_dev->bus->number; 5882 pciinfo.dev_fn = pci_dev->devfn; 5883 subsystem_vendor = pci_dev->subsystem_vendor; 5884 subsystem_device = pci_dev->subsystem_device; 5885 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | subsystem_vendor; 5886 5887 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo))) 5888 return -EFAULT; 5889 5890 return 0; 5891 } 5892 5893 static int pqi_getdrivver_ioctl(void __user *arg) 5894 { 5895 u32 version; 5896 5897 if (!arg) 5898 return -EINVAL; 5899 5900 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) | 5901 (DRIVER_RELEASE << 16) | DRIVER_REVISION; 5902 5903 if (copy_to_user(arg, &version, sizeof(version))) 5904 return -EFAULT; 5905 5906 return 0; 5907 } 5908 5909 struct ciss_error_info { 5910 u8 scsi_status; 5911 int command_status; 5912 size_t sense_data_length; 5913 }; 5914 5915 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info, 5916 struct ciss_error_info *ciss_error_info) 5917 { 5918 int ciss_cmd_status; 5919 size_t sense_data_length; 5920 5921 switch (pqi_error_info->data_out_result) { 5922 case PQI_DATA_IN_OUT_GOOD: 5923 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS; 5924 break; 5925 case PQI_DATA_IN_OUT_UNDERFLOW: 5926 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN; 5927 break; 5928 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 5929 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN; 5930 break; 5931 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 5932 case PQI_DATA_IN_OUT_BUFFER_ERROR: 5933 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 5934 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 5935 case PQI_DATA_IN_OUT_ERROR: 5936 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR; 5937 break; 5938 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 5939 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 5940 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 5941 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 5942 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 5943 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 5944 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 5945 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 5946 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 5947 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 5948 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR; 5949 break; 5950 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 5951 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT; 5952 break; 5953 case PQI_DATA_IN_OUT_ABORTED: 5954 ciss_cmd_status = CISS_CMD_STATUS_ABORTED; 5955 break; 5956 case PQI_DATA_IN_OUT_TIMEOUT: 5957 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT; 5958 break; 5959 default: 5960 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS; 5961 break; 5962 } 5963 5964 sense_data_length = 5965 get_unaligned_le16(&pqi_error_info->sense_data_length); 5966 if (sense_data_length == 0) 5967 sense_data_length = 5968 get_unaligned_le16(&pqi_error_info->response_data_length); 5969 if (sense_data_length) 5970 if (sense_data_length > sizeof(pqi_error_info->data)) 5971 sense_data_length = sizeof(pqi_error_info->data); 5972 5973 ciss_error_info->scsi_status = pqi_error_info->status; 5974 ciss_error_info->command_status = ciss_cmd_status; 5975 ciss_error_info->sense_data_length = sense_data_length; 5976 } 5977 5978 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg) 5979 { 5980 int rc; 5981 char *kernel_buffer = NULL; 5982 u16 iu_length; 5983 size_t sense_data_length; 5984 IOCTL_Command_struct iocommand; 5985 struct pqi_raid_path_request request; 5986 struct pqi_raid_error_info pqi_error_info; 5987 struct ciss_error_info ciss_error_info; 5988 5989 if (pqi_ctrl_offline(ctrl_info)) 5990 return -ENXIO; 5991 if (!arg) 5992 return -EINVAL; 5993 if (!capable(CAP_SYS_RAWIO)) 5994 return -EPERM; 5995 if (copy_from_user(&iocommand, arg, sizeof(iocommand))) 5996 return -EFAULT; 5997 if (iocommand.buf_size < 1 && 5998 iocommand.Request.Type.Direction != XFER_NONE) 5999 return -EINVAL; 6000 if (iocommand.Request.CDBLen > sizeof(request.cdb)) 6001 return -EINVAL; 6002 if (iocommand.Request.Type.Type != TYPE_CMD) 6003 return -EINVAL; 6004 6005 switch (iocommand.Request.Type.Direction) { 6006 case XFER_NONE: 6007 case XFER_WRITE: 6008 case XFER_READ: 6009 case XFER_READ | XFER_WRITE: 6010 break; 6011 default: 6012 return -EINVAL; 6013 } 6014 6015 if (iocommand.buf_size > 0) { 6016 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL); 6017 if (!kernel_buffer) 6018 return -ENOMEM; 6019 if (iocommand.Request.Type.Direction & XFER_WRITE) { 6020 if (copy_from_user(kernel_buffer, iocommand.buf, 6021 iocommand.buf_size)) { 6022 rc = -EFAULT; 6023 goto out; 6024 } 6025 } else { 6026 memset(kernel_buffer, 0, iocommand.buf_size); 6027 } 6028 } 6029 6030 memset(&request, 0, sizeof(request)); 6031 6032 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 6033 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 6034 PQI_REQUEST_HEADER_LENGTH; 6035 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes, 6036 sizeof(request.lun_number)); 6037 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen); 6038 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 6039 6040 switch (iocommand.Request.Type.Direction) { 6041 case XFER_NONE: 6042 request.data_direction = SOP_NO_DIRECTION_FLAG; 6043 break; 6044 case XFER_WRITE: 6045 request.data_direction = SOP_WRITE_FLAG; 6046 break; 6047 case XFER_READ: 6048 request.data_direction = SOP_READ_FLAG; 6049 break; 6050 case XFER_READ | XFER_WRITE: 6051 request.data_direction = SOP_BIDIRECTIONAL; 6052 break; 6053 } 6054 6055 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 6056 6057 if (iocommand.buf_size > 0) { 6058 put_unaligned_le32(iocommand.buf_size, &request.buffer_length); 6059 6060 rc = pqi_map_single(ctrl_info->pci_dev, 6061 &request.sg_descriptors[0], kernel_buffer, 6062 iocommand.buf_size, DMA_BIDIRECTIONAL); 6063 if (rc) 6064 goto out; 6065 6066 iu_length += sizeof(request.sg_descriptors[0]); 6067 } 6068 6069 put_unaligned_le16(iu_length, &request.header.iu_length); 6070 6071 if (ctrl_info->raid_iu_timeout_supported) 6072 put_unaligned_le32(iocommand.Request.Timeout, &request.timeout); 6073 6074 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 6075 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT); 6076 6077 if (iocommand.buf_size > 0) 6078 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 6079 DMA_BIDIRECTIONAL); 6080 6081 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info)); 6082 6083 if (rc == 0) { 6084 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info); 6085 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status; 6086 iocommand.error_info.CommandStatus = 6087 ciss_error_info.command_status; 6088 sense_data_length = ciss_error_info.sense_data_length; 6089 if (sense_data_length) { 6090 if (sense_data_length > 6091 sizeof(iocommand.error_info.SenseInfo)) 6092 sense_data_length = 6093 sizeof(iocommand.error_info.SenseInfo); 6094 memcpy(iocommand.error_info.SenseInfo, 6095 pqi_error_info.data, sense_data_length); 6096 iocommand.error_info.SenseLen = sense_data_length; 6097 } 6098 } 6099 6100 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) { 6101 rc = -EFAULT; 6102 goto out; 6103 } 6104 6105 if (rc == 0 && iocommand.buf_size > 0 && 6106 (iocommand.Request.Type.Direction & XFER_READ)) { 6107 if (copy_to_user(iocommand.buf, kernel_buffer, 6108 iocommand.buf_size)) { 6109 rc = -EFAULT; 6110 } 6111 } 6112 6113 out: 6114 kfree(kernel_buffer); 6115 6116 return rc; 6117 } 6118 6119 static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd, 6120 void __user *arg) 6121 { 6122 int rc; 6123 struct pqi_ctrl_info *ctrl_info; 6124 6125 ctrl_info = shost_to_hba(sdev->host); 6126 6127 if (pqi_ctrl_in_ofa(ctrl_info) || pqi_ctrl_in_shutdown(ctrl_info)) 6128 return -EBUSY; 6129 6130 switch (cmd) { 6131 case CCISS_DEREGDISK: 6132 case CCISS_REGNEWDISK: 6133 case CCISS_REGNEWD: 6134 rc = pqi_scan_scsi_devices(ctrl_info); 6135 break; 6136 case CCISS_GETPCIINFO: 6137 rc = pqi_getpciinfo_ioctl(ctrl_info, arg); 6138 break; 6139 case CCISS_GETDRIVVER: 6140 rc = pqi_getdrivver_ioctl(arg); 6141 break; 6142 case CCISS_PASSTHRU: 6143 rc = pqi_passthru_ioctl(ctrl_info, arg); 6144 break; 6145 default: 6146 rc = -EINVAL; 6147 break; 6148 } 6149 6150 return rc; 6151 } 6152 6153 static ssize_t pqi_firmware_version_show(struct device *dev, 6154 struct device_attribute *attr, char *buffer) 6155 { 6156 struct Scsi_Host *shost; 6157 struct pqi_ctrl_info *ctrl_info; 6158 6159 shost = class_to_shost(dev); 6160 ctrl_info = shost_to_hba(shost); 6161 6162 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version); 6163 } 6164 6165 static ssize_t pqi_driver_version_show(struct device *dev, 6166 struct device_attribute *attr, char *buffer) 6167 { 6168 return snprintf(buffer, PAGE_SIZE, "%s\n", 6169 DRIVER_VERSION BUILD_TIMESTAMP); 6170 } 6171 6172 static ssize_t pqi_serial_number_show(struct device *dev, 6173 struct device_attribute *attr, char *buffer) 6174 { 6175 struct Scsi_Host *shost; 6176 struct pqi_ctrl_info *ctrl_info; 6177 6178 shost = class_to_shost(dev); 6179 ctrl_info = shost_to_hba(shost); 6180 6181 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number); 6182 } 6183 6184 static ssize_t pqi_model_show(struct device *dev, 6185 struct device_attribute *attr, char *buffer) 6186 { 6187 struct Scsi_Host *shost; 6188 struct pqi_ctrl_info *ctrl_info; 6189 6190 shost = class_to_shost(dev); 6191 ctrl_info = shost_to_hba(shost); 6192 6193 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model); 6194 } 6195 6196 static ssize_t pqi_vendor_show(struct device *dev, 6197 struct device_attribute *attr, char *buffer) 6198 { 6199 struct Scsi_Host *shost; 6200 struct pqi_ctrl_info *ctrl_info; 6201 6202 shost = class_to_shost(dev); 6203 ctrl_info = shost_to_hba(shost); 6204 6205 return snprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor); 6206 } 6207 6208 static ssize_t pqi_host_rescan_store(struct device *dev, 6209 struct device_attribute *attr, const char *buffer, size_t count) 6210 { 6211 struct Scsi_Host *shost = class_to_shost(dev); 6212 6213 pqi_scan_start(shost); 6214 6215 return count; 6216 } 6217 6218 static ssize_t pqi_lockup_action_show(struct device *dev, 6219 struct device_attribute *attr, char *buffer) 6220 { 6221 int count = 0; 6222 unsigned int i; 6223 6224 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6225 if (pqi_lockup_actions[i].action == pqi_lockup_action) 6226 count += scnprintf(buffer + count, PAGE_SIZE - count, 6227 "[%s] ", pqi_lockup_actions[i].name); 6228 else 6229 count += scnprintf(buffer + count, PAGE_SIZE - count, 6230 "%s ", pqi_lockup_actions[i].name); 6231 } 6232 6233 count += scnprintf(buffer + count, PAGE_SIZE - count, "\n"); 6234 6235 return count; 6236 } 6237 6238 static ssize_t pqi_lockup_action_store(struct device *dev, 6239 struct device_attribute *attr, const char *buffer, size_t count) 6240 { 6241 unsigned int i; 6242 char *action_name; 6243 char action_name_buffer[32]; 6244 6245 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer)); 6246 action_name = strstrip(action_name_buffer); 6247 6248 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6249 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) { 6250 pqi_lockup_action = pqi_lockup_actions[i].action; 6251 return count; 6252 } 6253 } 6254 6255 return -EINVAL; 6256 } 6257 6258 static DEVICE_ATTR(driver_version, 0444, pqi_driver_version_show, NULL); 6259 static DEVICE_ATTR(firmware_version, 0444, pqi_firmware_version_show, NULL); 6260 static DEVICE_ATTR(model, 0444, pqi_model_show, NULL); 6261 static DEVICE_ATTR(serial_number, 0444, pqi_serial_number_show, NULL); 6262 static DEVICE_ATTR(vendor, 0444, pqi_vendor_show, NULL); 6263 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store); 6264 static DEVICE_ATTR(lockup_action, 0644, 6265 pqi_lockup_action_show, pqi_lockup_action_store); 6266 6267 static struct device_attribute *pqi_shost_attrs[] = { 6268 &dev_attr_driver_version, 6269 &dev_attr_firmware_version, 6270 &dev_attr_model, 6271 &dev_attr_serial_number, 6272 &dev_attr_vendor, 6273 &dev_attr_rescan, 6274 &dev_attr_lockup_action, 6275 NULL 6276 }; 6277 6278 static ssize_t pqi_unique_id_show(struct device *dev, 6279 struct device_attribute *attr, char *buffer) 6280 { 6281 struct pqi_ctrl_info *ctrl_info; 6282 struct scsi_device *sdev; 6283 struct pqi_scsi_dev *device; 6284 unsigned long flags; 6285 u8 unique_id[16]; 6286 6287 sdev = to_scsi_device(dev); 6288 ctrl_info = shost_to_hba(sdev->host); 6289 6290 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6291 6292 device = sdev->hostdata; 6293 if (!device) { 6294 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6295 return -ENODEV; 6296 } 6297 6298 if (device->is_physical_device) { 6299 memset(unique_id, 0, 8); 6300 memcpy(unique_id + 8, &device->wwid, sizeof(device->wwid)); 6301 } else { 6302 memcpy(unique_id, device->volume_id, sizeof(device->volume_id)); 6303 } 6304 6305 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6306 6307 return snprintf(buffer, PAGE_SIZE, 6308 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n", 6309 unique_id[0], unique_id[1], unique_id[2], unique_id[3], 6310 unique_id[4], unique_id[5], unique_id[6], unique_id[7], 6311 unique_id[8], unique_id[9], unique_id[10], unique_id[11], 6312 unique_id[12], unique_id[13], unique_id[14], unique_id[15]); 6313 } 6314 6315 static ssize_t pqi_lunid_show(struct device *dev, 6316 struct device_attribute *attr, char *buffer) 6317 { 6318 struct pqi_ctrl_info *ctrl_info; 6319 struct scsi_device *sdev; 6320 struct pqi_scsi_dev *device; 6321 unsigned long flags; 6322 u8 lunid[8]; 6323 6324 sdev = to_scsi_device(dev); 6325 ctrl_info = shost_to_hba(sdev->host); 6326 6327 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6328 6329 device = sdev->hostdata; 6330 if (!device) { 6331 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6332 return -ENODEV; 6333 } 6334 6335 memcpy(lunid, device->scsi3addr, sizeof(lunid)); 6336 6337 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6338 6339 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid); 6340 } 6341 6342 #define MAX_PATHS 8 6343 6344 static ssize_t pqi_path_info_show(struct device *dev, 6345 struct device_attribute *attr, char *buf) 6346 { 6347 struct pqi_ctrl_info *ctrl_info; 6348 struct scsi_device *sdev; 6349 struct pqi_scsi_dev *device; 6350 unsigned long flags; 6351 int i; 6352 int output_len = 0; 6353 u8 box; 6354 u8 bay; 6355 u8 path_map_index; 6356 char *active; 6357 u8 phys_connector[2]; 6358 6359 sdev = to_scsi_device(dev); 6360 ctrl_info = shost_to_hba(sdev->host); 6361 6362 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6363 6364 device = sdev->hostdata; 6365 if (!device) { 6366 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6367 return -ENODEV; 6368 } 6369 6370 bay = device->bay; 6371 for (i = 0; i < MAX_PATHS; i++) { 6372 path_map_index = 1 << i; 6373 if (i == device->active_path_index) 6374 active = "Active"; 6375 else if (device->path_map & path_map_index) 6376 active = "Inactive"; 6377 else 6378 continue; 6379 6380 output_len += scnprintf(buf + output_len, 6381 PAGE_SIZE - output_len, 6382 "[%d:%d:%d:%d] %20.20s ", 6383 ctrl_info->scsi_host->host_no, 6384 device->bus, device->target, 6385 device->lun, 6386 scsi_device_type(device->devtype)); 6387 6388 if (device->devtype == TYPE_RAID || 6389 pqi_is_logical_device(device)) 6390 goto end_buffer; 6391 6392 memcpy(&phys_connector, &device->phys_connector[i], 6393 sizeof(phys_connector)); 6394 if (phys_connector[0] < '0') 6395 phys_connector[0] = '0'; 6396 if (phys_connector[1] < '0') 6397 phys_connector[1] = '0'; 6398 6399 output_len += scnprintf(buf + output_len, 6400 PAGE_SIZE - output_len, 6401 "PORT: %.2s ", phys_connector); 6402 6403 box = device->box[i]; 6404 if (box != 0 && box != 0xFF) 6405 output_len += scnprintf(buf + output_len, 6406 PAGE_SIZE - output_len, 6407 "BOX: %hhu ", box); 6408 6409 if ((device->devtype == TYPE_DISK || 6410 device->devtype == TYPE_ZBC) && 6411 pqi_expose_device(device)) 6412 output_len += scnprintf(buf + output_len, 6413 PAGE_SIZE - output_len, 6414 "BAY: %hhu ", bay); 6415 6416 end_buffer: 6417 output_len += scnprintf(buf + output_len, 6418 PAGE_SIZE - output_len, 6419 "%s\n", active); 6420 } 6421 6422 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6423 6424 return output_len; 6425 } 6426 6427 static ssize_t pqi_sas_address_show(struct device *dev, 6428 struct device_attribute *attr, char *buffer) 6429 { 6430 struct pqi_ctrl_info *ctrl_info; 6431 struct scsi_device *sdev; 6432 struct pqi_scsi_dev *device; 6433 unsigned long flags; 6434 u64 sas_address; 6435 6436 sdev = to_scsi_device(dev); 6437 ctrl_info = shost_to_hba(sdev->host); 6438 6439 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6440 6441 device = sdev->hostdata; 6442 if (!device || !pqi_is_device_with_sas_address(device)) { 6443 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6444 return -ENODEV; 6445 } 6446 6447 sas_address = device->sas_address; 6448 6449 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6450 6451 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address); 6452 } 6453 6454 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev, 6455 struct device_attribute *attr, char *buffer) 6456 { 6457 struct pqi_ctrl_info *ctrl_info; 6458 struct scsi_device *sdev; 6459 struct pqi_scsi_dev *device; 6460 unsigned long flags; 6461 6462 sdev = to_scsi_device(dev); 6463 ctrl_info = shost_to_hba(sdev->host); 6464 6465 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6466 6467 device = sdev->hostdata; 6468 if (!device) { 6469 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6470 return -ENODEV; 6471 } 6472 6473 buffer[0] = device->raid_bypass_enabled ? '1' : '0'; 6474 buffer[1] = '\n'; 6475 buffer[2] = '\0'; 6476 6477 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6478 6479 return 2; 6480 } 6481 6482 static ssize_t pqi_raid_level_show(struct device *dev, 6483 struct device_attribute *attr, char *buffer) 6484 { 6485 struct pqi_ctrl_info *ctrl_info; 6486 struct scsi_device *sdev; 6487 struct pqi_scsi_dev *device; 6488 unsigned long flags; 6489 char *raid_level; 6490 6491 sdev = to_scsi_device(dev); 6492 ctrl_info = shost_to_hba(sdev->host); 6493 6494 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6495 6496 device = sdev->hostdata; 6497 if (!device) { 6498 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6499 return -ENODEV; 6500 } 6501 6502 if (pqi_is_logical_device(device)) 6503 raid_level = pqi_raid_level_to_string(device->raid_level); 6504 else 6505 raid_level = "N/A"; 6506 6507 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6508 6509 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level); 6510 } 6511 6512 static ssize_t pqi_raid_bypass_cnt_show(struct device *dev, 6513 struct device_attribute *attr, char *buffer) 6514 { 6515 struct pqi_ctrl_info *ctrl_info; 6516 struct scsi_device *sdev; 6517 struct pqi_scsi_dev *device; 6518 unsigned long flags; 6519 int raid_bypass_cnt; 6520 6521 sdev = to_scsi_device(dev); 6522 ctrl_info = shost_to_hba(sdev->host); 6523 6524 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6525 6526 device = sdev->hostdata; 6527 if (!device) { 6528 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6529 return -ENODEV; 6530 } 6531 6532 raid_bypass_cnt = atomic_read(&device->raid_bypass_cnt); 6533 6534 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6535 6536 return snprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt); 6537 } 6538 6539 static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL); 6540 static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL); 6541 static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL); 6542 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL); 6543 static DEVICE_ATTR(ssd_smart_path_enabled, 0444, pqi_ssd_smart_path_enabled_show, NULL); 6544 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL); 6545 static DEVICE_ATTR(raid_bypass_cnt, 0444, pqi_raid_bypass_cnt_show, NULL); 6546 6547 static struct device_attribute *pqi_sdev_attrs[] = { 6548 &dev_attr_lunid, 6549 &dev_attr_unique_id, 6550 &dev_attr_path_info, 6551 &dev_attr_sas_address, 6552 &dev_attr_ssd_smart_path_enabled, 6553 &dev_attr_raid_level, 6554 &dev_attr_raid_bypass_cnt, 6555 NULL 6556 }; 6557 6558 static struct scsi_host_template pqi_driver_template = { 6559 .module = THIS_MODULE, 6560 .name = DRIVER_NAME_SHORT, 6561 .proc_name = DRIVER_NAME_SHORT, 6562 .queuecommand = pqi_scsi_queue_command, 6563 .scan_start = pqi_scan_start, 6564 .scan_finished = pqi_scan_finished, 6565 .this_id = -1, 6566 .eh_device_reset_handler = pqi_eh_device_reset_handler, 6567 .ioctl = pqi_ioctl, 6568 .slave_alloc = pqi_slave_alloc, 6569 .slave_configure = pqi_slave_configure, 6570 .slave_destroy = pqi_slave_destroy, 6571 .map_queues = pqi_map_queues, 6572 .sdev_attrs = pqi_sdev_attrs, 6573 .shost_attrs = pqi_shost_attrs, 6574 }; 6575 6576 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info) 6577 { 6578 int rc; 6579 struct Scsi_Host *shost; 6580 6581 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info)); 6582 if (!shost) { 6583 dev_err(&ctrl_info->pci_dev->dev, 6584 "scsi_host_alloc failed for controller %u\n", 6585 ctrl_info->ctrl_id); 6586 return -ENOMEM; 6587 } 6588 6589 shost->io_port = 0; 6590 shost->n_io_port = 0; 6591 shost->this_id = -1; 6592 shost->max_channel = PQI_MAX_BUS; 6593 shost->max_cmd_len = MAX_COMMAND_SIZE; 6594 shost->max_lun = ~0; 6595 shost->max_id = ~0; 6596 shost->max_sectors = ctrl_info->max_sectors; 6597 shost->can_queue = ctrl_info->scsi_ml_can_queue; 6598 shost->cmd_per_lun = shost->can_queue; 6599 shost->sg_tablesize = ctrl_info->sg_tablesize; 6600 shost->transportt = pqi_sas_transport_template; 6601 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0); 6602 shost->unique_id = shost->irq; 6603 shost->nr_hw_queues = ctrl_info->num_queue_groups; 6604 shost->hostdata[0] = (unsigned long)ctrl_info; 6605 6606 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev); 6607 if (rc) { 6608 dev_err(&ctrl_info->pci_dev->dev, 6609 "scsi_add_host failed for controller %u\n", 6610 ctrl_info->ctrl_id); 6611 goto free_host; 6612 } 6613 6614 rc = pqi_add_sas_host(shost, ctrl_info); 6615 if (rc) { 6616 dev_err(&ctrl_info->pci_dev->dev, 6617 "add SAS host failed for controller %u\n", 6618 ctrl_info->ctrl_id); 6619 goto remove_host; 6620 } 6621 6622 ctrl_info->scsi_host = shost; 6623 6624 return 0; 6625 6626 remove_host: 6627 scsi_remove_host(shost); 6628 free_host: 6629 scsi_host_put(shost); 6630 6631 return rc; 6632 } 6633 6634 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info) 6635 { 6636 struct Scsi_Host *shost; 6637 6638 pqi_delete_sas_host(ctrl_info); 6639 6640 shost = ctrl_info->scsi_host; 6641 if (!shost) 6642 return; 6643 6644 scsi_remove_host(shost); 6645 scsi_host_put(shost); 6646 } 6647 6648 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info) 6649 { 6650 int rc = 0; 6651 struct pqi_device_registers __iomem *pqi_registers; 6652 unsigned long timeout; 6653 unsigned int timeout_msecs; 6654 union pqi_reset_register reset_reg; 6655 6656 pqi_registers = ctrl_info->pqi_registers; 6657 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100; 6658 timeout = msecs_to_jiffies(timeout_msecs) + jiffies; 6659 6660 while (1) { 6661 msleep(PQI_RESET_POLL_INTERVAL_MSECS); 6662 reset_reg.all_bits = readl(&pqi_registers->device_reset); 6663 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED) 6664 break; 6665 pqi_check_ctrl_health(ctrl_info); 6666 if (pqi_ctrl_offline(ctrl_info)) { 6667 rc = -ENXIO; 6668 break; 6669 } 6670 if (time_after(jiffies, timeout)) { 6671 rc = -ETIMEDOUT; 6672 break; 6673 } 6674 } 6675 6676 return rc; 6677 } 6678 6679 static int pqi_reset(struct pqi_ctrl_info *ctrl_info) 6680 { 6681 int rc; 6682 union pqi_reset_register reset_reg; 6683 6684 if (ctrl_info->pqi_reset_quiesce_supported) { 6685 rc = sis_pqi_reset_quiesce(ctrl_info); 6686 if (rc) { 6687 dev_err(&ctrl_info->pci_dev->dev, 6688 "PQI reset failed during quiesce with error %d\n", 6689 rc); 6690 return rc; 6691 } 6692 } 6693 6694 reset_reg.all_bits = 0; 6695 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET; 6696 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET; 6697 6698 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset); 6699 6700 rc = pqi_wait_for_pqi_reset_completion(ctrl_info); 6701 if (rc) 6702 dev_err(&ctrl_info->pci_dev->dev, 6703 "PQI reset failed with error %d\n", rc); 6704 6705 return rc; 6706 } 6707 6708 static int pqi_get_ctrl_serial_number(struct pqi_ctrl_info *ctrl_info) 6709 { 6710 int rc; 6711 struct bmic_sense_subsystem_info *sense_info; 6712 6713 sense_info = kzalloc(sizeof(*sense_info), GFP_KERNEL); 6714 if (!sense_info) 6715 return -ENOMEM; 6716 6717 rc = pqi_sense_subsystem_info(ctrl_info, sense_info); 6718 if (rc) 6719 goto out; 6720 6721 memcpy(ctrl_info->serial_number, sense_info->ctrl_serial_number, 6722 sizeof(sense_info->ctrl_serial_number)); 6723 ctrl_info->serial_number[sizeof(sense_info->ctrl_serial_number)] = '\0'; 6724 6725 out: 6726 kfree(sense_info); 6727 6728 return rc; 6729 } 6730 6731 static int pqi_get_ctrl_product_details(struct pqi_ctrl_info *ctrl_info) 6732 { 6733 int rc; 6734 struct bmic_identify_controller *identify; 6735 6736 identify = kmalloc(sizeof(*identify), GFP_KERNEL); 6737 if (!identify) 6738 return -ENOMEM; 6739 6740 rc = pqi_identify_controller(ctrl_info, identify); 6741 if (rc) 6742 goto out; 6743 6744 memcpy(ctrl_info->firmware_version, identify->firmware_version, 6745 sizeof(identify->firmware_version)); 6746 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0'; 6747 snprintf(ctrl_info->firmware_version + 6748 strlen(ctrl_info->firmware_version), 6749 sizeof(ctrl_info->firmware_version), 6750 "-%u", get_unaligned_le16(&identify->firmware_build_number)); 6751 6752 memcpy(ctrl_info->model, identify->product_id, 6753 sizeof(identify->product_id)); 6754 ctrl_info->model[sizeof(identify->product_id)] = '\0'; 6755 6756 memcpy(ctrl_info->vendor, identify->vendor_id, 6757 sizeof(identify->vendor_id)); 6758 ctrl_info->vendor[sizeof(identify->vendor_id)] = '\0'; 6759 6760 out: 6761 kfree(identify); 6762 6763 return rc; 6764 } 6765 6766 struct pqi_config_table_section_info { 6767 struct pqi_ctrl_info *ctrl_info; 6768 void *section; 6769 u32 section_offset; 6770 void __iomem *section_iomem_addr; 6771 }; 6772 6773 static inline bool pqi_is_firmware_feature_supported( 6774 struct pqi_config_table_firmware_features *firmware_features, 6775 unsigned int bit_position) 6776 { 6777 unsigned int byte_index; 6778 6779 byte_index = bit_position / BITS_PER_BYTE; 6780 6781 if (byte_index >= le16_to_cpu(firmware_features->num_elements)) 6782 return false; 6783 6784 return firmware_features->features_supported[byte_index] & 6785 (1 << (bit_position % BITS_PER_BYTE)) ? true : false; 6786 } 6787 6788 static inline bool pqi_is_firmware_feature_enabled( 6789 struct pqi_config_table_firmware_features *firmware_features, 6790 void __iomem *firmware_features_iomem_addr, 6791 unsigned int bit_position) 6792 { 6793 unsigned int byte_index; 6794 u8 __iomem *features_enabled_iomem_addr; 6795 6796 byte_index = (bit_position / BITS_PER_BYTE) + 6797 (le16_to_cpu(firmware_features->num_elements) * 2); 6798 6799 features_enabled_iomem_addr = firmware_features_iomem_addr + 6800 offsetof(struct pqi_config_table_firmware_features, 6801 features_supported) + byte_index; 6802 6803 return *((__force u8 *)features_enabled_iomem_addr) & 6804 (1 << (bit_position % BITS_PER_BYTE)) ? true : false; 6805 } 6806 6807 static inline void pqi_request_firmware_feature( 6808 struct pqi_config_table_firmware_features *firmware_features, 6809 unsigned int bit_position) 6810 { 6811 unsigned int byte_index; 6812 6813 byte_index = (bit_position / BITS_PER_BYTE) + 6814 le16_to_cpu(firmware_features->num_elements); 6815 6816 firmware_features->features_supported[byte_index] |= 6817 (1 << (bit_position % BITS_PER_BYTE)); 6818 } 6819 6820 static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info, 6821 u16 first_section, u16 last_section) 6822 { 6823 struct pqi_vendor_general_request request; 6824 6825 memset(&request, 0, sizeof(request)); 6826 6827 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; 6828 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 6829 &request.header.iu_length); 6830 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE, 6831 &request.function_code); 6832 put_unaligned_le16(first_section, 6833 &request.data.config_table_update.first_section); 6834 put_unaligned_le16(last_section, 6835 &request.data.config_table_update.last_section); 6836 6837 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 6838 0, NULL, NO_TIMEOUT); 6839 } 6840 6841 static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info, 6842 struct pqi_config_table_firmware_features *firmware_features, 6843 void __iomem *firmware_features_iomem_addr) 6844 { 6845 void *features_requested; 6846 void __iomem *features_requested_iomem_addr; 6847 6848 features_requested = firmware_features->features_supported + 6849 le16_to_cpu(firmware_features->num_elements); 6850 6851 features_requested_iomem_addr = firmware_features_iomem_addr + 6852 (features_requested - (void *)firmware_features); 6853 6854 memcpy_toio(features_requested_iomem_addr, features_requested, 6855 le16_to_cpu(firmware_features->num_elements)); 6856 6857 return pqi_config_table_update(ctrl_info, 6858 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES, 6859 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES); 6860 } 6861 6862 struct pqi_firmware_feature { 6863 char *feature_name; 6864 unsigned int feature_bit; 6865 bool supported; 6866 bool enabled; 6867 void (*feature_status)(struct pqi_ctrl_info *ctrl_info, 6868 struct pqi_firmware_feature *firmware_feature); 6869 }; 6870 6871 static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info, 6872 struct pqi_firmware_feature *firmware_feature) 6873 { 6874 if (!firmware_feature->supported) { 6875 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n", 6876 firmware_feature->feature_name); 6877 return; 6878 } 6879 6880 if (firmware_feature->enabled) { 6881 dev_info(&ctrl_info->pci_dev->dev, 6882 "%s enabled\n", firmware_feature->feature_name); 6883 return; 6884 } 6885 6886 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n", 6887 firmware_feature->feature_name); 6888 } 6889 6890 static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info, 6891 struct pqi_firmware_feature *firmware_feature) 6892 { 6893 switch (firmware_feature->feature_bit) { 6894 case PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE: 6895 ctrl_info->soft_reset_handshake_supported = 6896 firmware_feature->enabled; 6897 break; 6898 case PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT: 6899 ctrl_info->raid_iu_timeout_supported = 6900 firmware_feature->enabled; 6901 break; 6902 case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT: 6903 ctrl_info->tmf_iu_timeout_supported = 6904 firmware_feature->enabled; 6905 break; 6906 } 6907 6908 pqi_firmware_feature_status(ctrl_info, firmware_feature); 6909 } 6910 6911 static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info, 6912 struct pqi_firmware_feature *firmware_feature) 6913 { 6914 if (firmware_feature->feature_status) 6915 firmware_feature->feature_status(ctrl_info, firmware_feature); 6916 } 6917 6918 static DEFINE_MUTEX(pqi_firmware_features_mutex); 6919 6920 static struct pqi_firmware_feature pqi_firmware_features[] = { 6921 { 6922 .feature_name = "Online Firmware Activation", 6923 .feature_bit = PQI_FIRMWARE_FEATURE_OFA, 6924 .feature_status = pqi_firmware_feature_status, 6925 }, 6926 { 6927 .feature_name = "Serial Management Protocol", 6928 .feature_bit = PQI_FIRMWARE_FEATURE_SMP, 6929 .feature_status = pqi_firmware_feature_status, 6930 }, 6931 { 6932 .feature_name = "New Soft Reset Handshake", 6933 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE, 6934 .feature_status = pqi_ctrl_update_feature_flags, 6935 }, 6936 { 6937 .feature_name = "RAID IU Timeout", 6938 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT, 6939 .feature_status = pqi_ctrl_update_feature_flags, 6940 }, 6941 { 6942 .feature_name = "TMF IU Timeout", 6943 .feature_bit = PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT, 6944 .feature_status = pqi_ctrl_update_feature_flags, 6945 }, 6946 }; 6947 6948 static void pqi_process_firmware_features( 6949 struct pqi_config_table_section_info *section_info) 6950 { 6951 int rc; 6952 struct pqi_ctrl_info *ctrl_info; 6953 struct pqi_config_table_firmware_features *firmware_features; 6954 void __iomem *firmware_features_iomem_addr; 6955 unsigned int i; 6956 unsigned int num_features_supported; 6957 6958 ctrl_info = section_info->ctrl_info; 6959 firmware_features = section_info->section; 6960 firmware_features_iomem_addr = section_info->section_iomem_addr; 6961 6962 for (i = 0, num_features_supported = 0; 6963 i < ARRAY_SIZE(pqi_firmware_features); i++) { 6964 if (pqi_is_firmware_feature_supported(firmware_features, 6965 pqi_firmware_features[i].feature_bit)) { 6966 pqi_firmware_features[i].supported = true; 6967 num_features_supported++; 6968 } else { 6969 pqi_firmware_feature_update(ctrl_info, 6970 &pqi_firmware_features[i]); 6971 } 6972 } 6973 6974 if (num_features_supported == 0) 6975 return; 6976 6977 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6978 if (!pqi_firmware_features[i].supported) 6979 continue; 6980 pqi_request_firmware_feature(firmware_features, 6981 pqi_firmware_features[i].feature_bit); 6982 } 6983 6984 rc = pqi_enable_firmware_features(ctrl_info, firmware_features, 6985 firmware_features_iomem_addr); 6986 if (rc) { 6987 dev_err(&ctrl_info->pci_dev->dev, 6988 "failed to enable firmware features in PQI configuration table\n"); 6989 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6990 if (!pqi_firmware_features[i].supported) 6991 continue; 6992 pqi_firmware_feature_update(ctrl_info, 6993 &pqi_firmware_features[i]); 6994 } 6995 return; 6996 } 6997 6998 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6999 if (!pqi_firmware_features[i].supported) 7000 continue; 7001 if (pqi_is_firmware_feature_enabled(firmware_features, 7002 firmware_features_iomem_addr, 7003 pqi_firmware_features[i].feature_bit)) { 7004 pqi_firmware_features[i].enabled = true; 7005 } 7006 pqi_firmware_feature_update(ctrl_info, 7007 &pqi_firmware_features[i]); 7008 } 7009 } 7010 7011 static void pqi_init_firmware_features(void) 7012 { 7013 unsigned int i; 7014 7015 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 7016 pqi_firmware_features[i].supported = false; 7017 pqi_firmware_features[i].enabled = false; 7018 } 7019 } 7020 7021 static void pqi_process_firmware_features_section( 7022 struct pqi_config_table_section_info *section_info) 7023 { 7024 mutex_lock(&pqi_firmware_features_mutex); 7025 pqi_init_firmware_features(); 7026 pqi_process_firmware_features(section_info); 7027 mutex_unlock(&pqi_firmware_features_mutex); 7028 } 7029 7030 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) 7031 { 7032 u32 table_length; 7033 u32 section_offset; 7034 void __iomem *table_iomem_addr; 7035 struct pqi_config_table *config_table; 7036 struct pqi_config_table_section_header *section; 7037 struct pqi_config_table_section_info section_info; 7038 7039 table_length = ctrl_info->config_table_length; 7040 if (table_length == 0) 7041 return 0; 7042 7043 config_table = kmalloc(table_length, GFP_KERNEL); 7044 if (!config_table) { 7045 dev_err(&ctrl_info->pci_dev->dev, 7046 "failed to allocate memory for PQI configuration table\n"); 7047 return -ENOMEM; 7048 } 7049 7050 /* 7051 * Copy the config table contents from I/O memory space into the 7052 * temporary buffer. 7053 */ 7054 table_iomem_addr = ctrl_info->iomem_base + 7055 ctrl_info->config_table_offset; 7056 memcpy_fromio(config_table, table_iomem_addr, table_length); 7057 7058 section_info.ctrl_info = ctrl_info; 7059 section_offset = 7060 get_unaligned_le32(&config_table->first_section_offset); 7061 7062 while (section_offset) { 7063 section = (void *)config_table + section_offset; 7064 7065 section_info.section = section; 7066 section_info.section_offset = section_offset; 7067 section_info.section_iomem_addr = 7068 table_iomem_addr + section_offset; 7069 7070 switch (get_unaligned_le16(§ion->section_id)) { 7071 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES: 7072 pqi_process_firmware_features_section(§ion_info); 7073 break; 7074 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT: 7075 if (pqi_disable_heartbeat) 7076 dev_warn(&ctrl_info->pci_dev->dev, 7077 "heartbeat disabled by module parameter\n"); 7078 else 7079 ctrl_info->heartbeat_counter = 7080 table_iomem_addr + 7081 section_offset + 7082 offsetof( 7083 struct pqi_config_table_heartbeat, 7084 heartbeat_counter); 7085 break; 7086 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET: 7087 ctrl_info->soft_reset_status = 7088 table_iomem_addr + 7089 section_offset + 7090 offsetof(struct pqi_config_table_soft_reset, 7091 soft_reset_status); 7092 break; 7093 } 7094 7095 section_offset = 7096 get_unaligned_le16(§ion->next_section_offset); 7097 } 7098 7099 kfree(config_table); 7100 7101 return 0; 7102 } 7103 7104 /* Switches the controller from PQI mode back into SIS mode. */ 7105 7106 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info) 7107 { 7108 int rc; 7109 7110 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE); 7111 rc = pqi_reset(ctrl_info); 7112 if (rc) 7113 return rc; 7114 rc = sis_reenable_sis_mode(ctrl_info); 7115 if (rc) { 7116 dev_err(&ctrl_info->pci_dev->dev, 7117 "re-enabling SIS mode failed with error %d\n", rc); 7118 return rc; 7119 } 7120 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 7121 7122 return 0; 7123 } 7124 7125 /* 7126 * If the controller isn't already in SIS mode, this function forces it into 7127 * SIS mode. 7128 */ 7129 7130 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info) 7131 { 7132 if (!sis_is_firmware_running(ctrl_info)) 7133 return -ENXIO; 7134 7135 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE) 7136 return 0; 7137 7138 if (sis_is_kernel_up(ctrl_info)) { 7139 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 7140 return 0; 7141 } 7142 7143 return pqi_revert_to_sis_mode(ctrl_info); 7144 } 7145 7146 #define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000 7147 7148 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info) 7149 { 7150 int rc; 7151 7152 if (reset_devices) { 7153 sis_soft_reset(ctrl_info); 7154 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); 7155 } else { 7156 rc = pqi_force_sis_mode(ctrl_info); 7157 if (rc) 7158 return rc; 7159 } 7160 7161 /* 7162 * Wait until the controller is ready to start accepting SIS 7163 * commands. 7164 */ 7165 rc = sis_wait_for_ctrl_ready(ctrl_info); 7166 if (rc) 7167 return rc; 7168 7169 /* 7170 * Get the controller properties. This allows us to determine 7171 * whether or not it supports PQI mode. 7172 */ 7173 rc = sis_get_ctrl_properties(ctrl_info); 7174 if (rc) { 7175 dev_err(&ctrl_info->pci_dev->dev, 7176 "error obtaining controller properties\n"); 7177 return rc; 7178 } 7179 7180 rc = sis_get_pqi_capabilities(ctrl_info); 7181 if (rc) { 7182 dev_err(&ctrl_info->pci_dev->dev, 7183 "error obtaining controller capabilities\n"); 7184 return rc; 7185 } 7186 7187 if (reset_devices) { 7188 if (ctrl_info->max_outstanding_requests > 7189 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP) 7190 ctrl_info->max_outstanding_requests = 7191 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP; 7192 } else { 7193 if (ctrl_info->max_outstanding_requests > 7194 PQI_MAX_OUTSTANDING_REQUESTS) 7195 ctrl_info->max_outstanding_requests = 7196 PQI_MAX_OUTSTANDING_REQUESTS; 7197 } 7198 7199 pqi_calculate_io_resources(ctrl_info); 7200 7201 rc = pqi_alloc_error_buffer(ctrl_info); 7202 if (rc) { 7203 dev_err(&ctrl_info->pci_dev->dev, 7204 "failed to allocate PQI error buffer\n"); 7205 return rc; 7206 } 7207 7208 /* 7209 * If the function we are about to call succeeds, the 7210 * controller will transition from legacy SIS mode 7211 * into PQI mode. 7212 */ 7213 rc = sis_init_base_struct_addr(ctrl_info); 7214 if (rc) { 7215 dev_err(&ctrl_info->pci_dev->dev, 7216 "error initializing PQI mode\n"); 7217 return rc; 7218 } 7219 7220 /* Wait for the controller to complete the SIS -> PQI transition. */ 7221 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 7222 if (rc) { 7223 dev_err(&ctrl_info->pci_dev->dev, 7224 "transition to PQI mode failed\n"); 7225 return rc; 7226 } 7227 7228 /* From here on, we are running in PQI mode. */ 7229 ctrl_info->pqi_mode_enabled = true; 7230 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7231 7232 rc = pqi_alloc_admin_queues(ctrl_info); 7233 if (rc) { 7234 dev_err(&ctrl_info->pci_dev->dev, 7235 "failed to allocate admin queues\n"); 7236 return rc; 7237 } 7238 7239 rc = pqi_create_admin_queues(ctrl_info); 7240 if (rc) { 7241 dev_err(&ctrl_info->pci_dev->dev, 7242 "error creating admin queues\n"); 7243 return rc; 7244 } 7245 7246 rc = pqi_report_device_capability(ctrl_info); 7247 if (rc) { 7248 dev_err(&ctrl_info->pci_dev->dev, 7249 "obtaining device capability failed\n"); 7250 return rc; 7251 } 7252 7253 rc = pqi_validate_device_capability(ctrl_info); 7254 if (rc) 7255 return rc; 7256 7257 pqi_calculate_queue_resources(ctrl_info); 7258 7259 rc = pqi_enable_msix_interrupts(ctrl_info); 7260 if (rc) 7261 return rc; 7262 7263 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) { 7264 ctrl_info->max_msix_vectors = 7265 ctrl_info->num_msix_vectors_enabled; 7266 pqi_calculate_queue_resources(ctrl_info); 7267 } 7268 7269 rc = pqi_alloc_io_resources(ctrl_info); 7270 if (rc) 7271 return rc; 7272 7273 rc = pqi_alloc_operational_queues(ctrl_info); 7274 if (rc) { 7275 dev_err(&ctrl_info->pci_dev->dev, 7276 "failed to allocate operational queues\n"); 7277 return rc; 7278 } 7279 7280 pqi_init_operational_queues(ctrl_info); 7281 7282 rc = pqi_request_irqs(ctrl_info); 7283 if (rc) 7284 return rc; 7285 7286 rc = pqi_create_queues(ctrl_info); 7287 if (rc) 7288 return rc; 7289 7290 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 7291 7292 ctrl_info->controller_online = true; 7293 7294 rc = pqi_process_config_table(ctrl_info); 7295 if (rc) 7296 return rc; 7297 7298 pqi_start_heartbeat_timer(ctrl_info); 7299 7300 rc = pqi_enable_events(ctrl_info); 7301 if (rc) { 7302 dev_err(&ctrl_info->pci_dev->dev, 7303 "error enabling events\n"); 7304 return rc; 7305 } 7306 7307 /* Register with the SCSI subsystem. */ 7308 rc = pqi_register_scsi(ctrl_info); 7309 if (rc) 7310 return rc; 7311 7312 rc = pqi_get_ctrl_product_details(ctrl_info); 7313 if (rc) { 7314 dev_err(&ctrl_info->pci_dev->dev, 7315 "error obtaining product details\n"); 7316 return rc; 7317 } 7318 7319 rc = pqi_get_ctrl_serial_number(ctrl_info); 7320 if (rc) { 7321 dev_err(&ctrl_info->pci_dev->dev, 7322 "error obtaining ctrl serial number\n"); 7323 return rc; 7324 } 7325 7326 rc = pqi_set_diag_rescan(ctrl_info); 7327 if (rc) { 7328 dev_err(&ctrl_info->pci_dev->dev, 7329 "error enabling multi-lun rescan\n"); 7330 return rc; 7331 } 7332 7333 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 7334 if (rc) { 7335 dev_err(&ctrl_info->pci_dev->dev, 7336 "error updating host wellness\n"); 7337 return rc; 7338 } 7339 7340 pqi_schedule_update_time_worker(ctrl_info); 7341 7342 pqi_scan_scsi_devices(ctrl_info); 7343 7344 return 0; 7345 } 7346 7347 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info) 7348 { 7349 unsigned int i; 7350 struct pqi_admin_queues *admin_queues; 7351 struct pqi_event_queue *event_queue; 7352 7353 admin_queues = &ctrl_info->admin_queues; 7354 admin_queues->iq_pi_copy = 0; 7355 admin_queues->oq_ci_copy = 0; 7356 writel(0, admin_queues->oq_pi); 7357 7358 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 7359 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0; 7360 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0; 7361 ctrl_info->queue_groups[i].oq_ci_copy = 0; 7362 7363 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]); 7364 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]); 7365 writel(0, ctrl_info->queue_groups[i].oq_pi); 7366 } 7367 7368 event_queue = &ctrl_info->event_queue; 7369 writel(0, event_queue->oq_pi); 7370 event_queue->oq_ci_copy = 0; 7371 } 7372 7373 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) 7374 { 7375 int rc; 7376 7377 rc = pqi_force_sis_mode(ctrl_info); 7378 if (rc) 7379 return rc; 7380 7381 /* 7382 * Wait until the controller is ready to start accepting SIS 7383 * commands. 7384 */ 7385 rc = sis_wait_for_ctrl_ready_resume(ctrl_info); 7386 if (rc) 7387 return rc; 7388 7389 /* 7390 * Get the controller properties. This allows us to determine 7391 * whether or not it supports PQI mode. 7392 */ 7393 rc = sis_get_ctrl_properties(ctrl_info); 7394 if (rc) { 7395 dev_err(&ctrl_info->pci_dev->dev, 7396 "error obtaining controller properties\n"); 7397 return rc; 7398 } 7399 7400 rc = sis_get_pqi_capabilities(ctrl_info); 7401 if (rc) { 7402 dev_err(&ctrl_info->pci_dev->dev, 7403 "error obtaining controller capabilities\n"); 7404 return rc; 7405 } 7406 7407 /* 7408 * If the function we are about to call succeeds, the 7409 * controller will transition from legacy SIS mode 7410 * into PQI mode. 7411 */ 7412 rc = sis_init_base_struct_addr(ctrl_info); 7413 if (rc) { 7414 dev_err(&ctrl_info->pci_dev->dev, 7415 "error initializing PQI mode\n"); 7416 return rc; 7417 } 7418 7419 /* Wait for the controller to complete the SIS -> PQI transition. */ 7420 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 7421 if (rc) { 7422 dev_err(&ctrl_info->pci_dev->dev, 7423 "transition to PQI mode failed\n"); 7424 return rc; 7425 } 7426 7427 /* From here on, we are running in PQI mode. */ 7428 ctrl_info->pqi_mode_enabled = true; 7429 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7430 7431 pqi_reinit_queues(ctrl_info); 7432 7433 rc = pqi_create_admin_queues(ctrl_info); 7434 if (rc) { 7435 dev_err(&ctrl_info->pci_dev->dev, 7436 "error creating admin queues\n"); 7437 return rc; 7438 } 7439 7440 rc = pqi_create_queues(ctrl_info); 7441 if (rc) 7442 return rc; 7443 7444 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 7445 7446 ctrl_info->controller_online = true; 7447 pqi_ctrl_unblock_requests(ctrl_info); 7448 7449 rc = pqi_process_config_table(ctrl_info); 7450 if (rc) 7451 return rc; 7452 7453 pqi_start_heartbeat_timer(ctrl_info); 7454 7455 rc = pqi_enable_events(ctrl_info); 7456 if (rc) { 7457 dev_err(&ctrl_info->pci_dev->dev, 7458 "error enabling events\n"); 7459 return rc; 7460 } 7461 7462 rc = pqi_get_ctrl_product_details(ctrl_info); 7463 if (rc) { 7464 dev_err(&ctrl_info->pci_dev->dev, 7465 "error obtaining product details\n"); 7466 return rc; 7467 } 7468 7469 rc = pqi_set_diag_rescan(ctrl_info); 7470 if (rc) { 7471 dev_err(&ctrl_info->pci_dev->dev, 7472 "error enabling multi-lun rescan\n"); 7473 return rc; 7474 } 7475 7476 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 7477 if (rc) { 7478 dev_err(&ctrl_info->pci_dev->dev, 7479 "error updating host wellness\n"); 7480 return rc; 7481 } 7482 7483 pqi_schedule_update_time_worker(ctrl_info); 7484 7485 pqi_scan_scsi_devices(ctrl_info); 7486 7487 return 0; 7488 } 7489 7490 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev, 7491 u16 timeout) 7492 { 7493 int rc; 7494 7495 rc = pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2, 7496 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout); 7497 7498 return pcibios_err_to_errno(rc); 7499 } 7500 7501 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info) 7502 { 7503 int rc; 7504 u64 mask; 7505 7506 rc = pci_enable_device(ctrl_info->pci_dev); 7507 if (rc) { 7508 dev_err(&ctrl_info->pci_dev->dev, 7509 "failed to enable PCI device\n"); 7510 return rc; 7511 } 7512 7513 if (sizeof(dma_addr_t) > 4) 7514 mask = DMA_BIT_MASK(64); 7515 else 7516 mask = DMA_BIT_MASK(32); 7517 7518 rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask); 7519 if (rc) { 7520 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n"); 7521 goto disable_device; 7522 } 7523 7524 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT); 7525 if (rc) { 7526 dev_err(&ctrl_info->pci_dev->dev, 7527 "failed to obtain PCI resources\n"); 7528 goto disable_device; 7529 } 7530 7531 ctrl_info->iomem_base = ioremap(pci_resource_start( 7532 ctrl_info->pci_dev, 0), 7533 sizeof(struct pqi_ctrl_registers)); 7534 if (!ctrl_info->iomem_base) { 7535 dev_err(&ctrl_info->pci_dev->dev, 7536 "failed to map memory for controller registers\n"); 7537 rc = -ENOMEM; 7538 goto release_regions; 7539 } 7540 7541 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6 7542 7543 /* Increase the PCIe completion timeout. */ 7544 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev, 7545 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS); 7546 if (rc) { 7547 dev_err(&ctrl_info->pci_dev->dev, 7548 "failed to set PCIe completion timeout\n"); 7549 goto release_regions; 7550 } 7551 7552 /* Enable bus mastering. */ 7553 pci_set_master(ctrl_info->pci_dev); 7554 7555 ctrl_info->registers = ctrl_info->iomem_base; 7556 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers; 7557 7558 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info); 7559 7560 return 0; 7561 7562 release_regions: 7563 pci_release_regions(ctrl_info->pci_dev); 7564 disable_device: 7565 pci_disable_device(ctrl_info->pci_dev); 7566 7567 return rc; 7568 } 7569 7570 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info) 7571 { 7572 iounmap(ctrl_info->iomem_base); 7573 pci_release_regions(ctrl_info->pci_dev); 7574 if (pci_is_enabled(ctrl_info->pci_dev)) 7575 pci_disable_device(ctrl_info->pci_dev); 7576 pci_set_drvdata(ctrl_info->pci_dev, NULL); 7577 } 7578 7579 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node) 7580 { 7581 struct pqi_ctrl_info *ctrl_info; 7582 7583 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info), 7584 GFP_KERNEL, numa_node); 7585 if (!ctrl_info) 7586 return NULL; 7587 7588 mutex_init(&ctrl_info->scan_mutex); 7589 mutex_init(&ctrl_info->lun_reset_mutex); 7590 mutex_init(&ctrl_info->ofa_mutex); 7591 7592 INIT_LIST_HEAD(&ctrl_info->scsi_device_list); 7593 spin_lock_init(&ctrl_info->scsi_device_list_lock); 7594 7595 INIT_WORK(&ctrl_info->event_work, pqi_event_worker); 7596 atomic_set(&ctrl_info->num_interrupts, 0); 7597 atomic_set(&ctrl_info->sync_cmds_outstanding, 0); 7598 7599 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker); 7600 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker); 7601 7602 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0); 7603 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker); 7604 7605 sema_init(&ctrl_info->sync_request_sem, 7606 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS); 7607 init_waitqueue_head(&ctrl_info->block_requests_wait); 7608 7609 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 7610 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock); 7611 INIT_WORK(&ctrl_info->raid_bypass_retry_work, 7612 pqi_raid_bypass_retry_worker); 7613 7614 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1; 7615 ctrl_info->irq_mode = IRQ_MODE_NONE; 7616 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS; 7617 7618 return ctrl_info; 7619 } 7620 7621 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info) 7622 { 7623 kfree(ctrl_info); 7624 } 7625 7626 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info) 7627 { 7628 pqi_free_irqs(ctrl_info); 7629 pqi_disable_msix_interrupts(ctrl_info); 7630 } 7631 7632 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info) 7633 { 7634 pqi_stop_heartbeat_timer(ctrl_info); 7635 pqi_free_interrupts(ctrl_info); 7636 if (ctrl_info->queue_memory_base) 7637 dma_free_coherent(&ctrl_info->pci_dev->dev, 7638 ctrl_info->queue_memory_length, 7639 ctrl_info->queue_memory_base, 7640 ctrl_info->queue_memory_base_dma_handle); 7641 if (ctrl_info->admin_queue_memory_base) 7642 dma_free_coherent(&ctrl_info->pci_dev->dev, 7643 ctrl_info->admin_queue_memory_length, 7644 ctrl_info->admin_queue_memory_base, 7645 ctrl_info->admin_queue_memory_base_dma_handle); 7646 pqi_free_all_io_requests(ctrl_info); 7647 if (ctrl_info->error_buffer) 7648 dma_free_coherent(&ctrl_info->pci_dev->dev, 7649 ctrl_info->error_buffer_length, 7650 ctrl_info->error_buffer, 7651 ctrl_info->error_buffer_dma_handle); 7652 if (ctrl_info->iomem_base) 7653 pqi_cleanup_pci_init(ctrl_info); 7654 pqi_free_ctrl_info(ctrl_info); 7655 } 7656 7657 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info) 7658 { 7659 pqi_cancel_rescan_worker(ctrl_info); 7660 pqi_cancel_update_time_worker(ctrl_info); 7661 pqi_unregister_scsi(ctrl_info); 7662 if (ctrl_info->pqi_mode_enabled) 7663 pqi_revert_to_sis_mode(ctrl_info); 7664 pqi_free_ctrl_resources(ctrl_info); 7665 } 7666 7667 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info) 7668 { 7669 pqi_cancel_update_time_worker(ctrl_info); 7670 pqi_cancel_rescan_worker(ctrl_info); 7671 pqi_wait_until_lun_reset_finished(ctrl_info); 7672 pqi_wait_until_scan_finished(ctrl_info); 7673 pqi_ctrl_ofa_start(ctrl_info); 7674 pqi_ctrl_block_requests(ctrl_info); 7675 pqi_ctrl_wait_until_quiesced(ctrl_info); 7676 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS); 7677 pqi_fail_io_queued_for_all_devices(ctrl_info); 7678 pqi_wait_until_inbound_queues_empty(ctrl_info); 7679 pqi_stop_heartbeat_timer(ctrl_info); 7680 ctrl_info->pqi_mode_enabled = false; 7681 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 7682 } 7683 7684 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info) 7685 { 7686 pqi_ofa_free_host_buffer(ctrl_info); 7687 ctrl_info->pqi_mode_enabled = true; 7688 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7689 ctrl_info->controller_online = true; 7690 pqi_ctrl_unblock_requests(ctrl_info); 7691 pqi_start_heartbeat_timer(ctrl_info); 7692 pqi_schedule_update_time_worker(ctrl_info); 7693 pqi_clear_soft_reset_status(ctrl_info, 7694 PQI_SOFT_RESET_ABORT); 7695 pqi_scan_scsi_devices(ctrl_info); 7696 } 7697 7698 static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, 7699 u32 total_size, u32 chunk_size) 7700 { 7701 u32 sg_count; 7702 u32 size; 7703 int i; 7704 struct pqi_sg_descriptor *mem_descriptor = NULL; 7705 struct device *dev; 7706 struct pqi_ofa_memory *ofap; 7707 7708 dev = &ctrl_info->pci_dev->dev; 7709 7710 sg_count = (total_size + chunk_size - 1); 7711 sg_count /= chunk_size; 7712 7713 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7714 7715 if (sg_count*chunk_size < total_size) 7716 goto out; 7717 7718 ctrl_info->pqi_ofa_chunk_virt_addr = 7719 kcalloc(sg_count, sizeof(void *), GFP_KERNEL); 7720 if (!ctrl_info->pqi_ofa_chunk_virt_addr) 7721 goto out; 7722 7723 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) { 7724 dma_addr_t dma_handle; 7725 7726 ctrl_info->pqi_ofa_chunk_virt_addr[i] = 7727 dma_alloc_coherent(dev, chunk_size, &dma_handle, 7728 GFP_KERNEL); 7729 7730 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i]) 7731 break; 7732 7733 mem_descriptor = &ofap->sg_descriptor[i]; 7734 put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address); 7735 put_unaligned_le32 (chunk_size, &mem_descriptor->length); 7736 } 7737 7738 if (!size || size < total_size) 7739 goto out_free_chunks; 7740 7741 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags); 7742 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors); 7743 put_unaligned_le32(size, &ofap->bytes_allocated); 7744 7745 return 0; 7746 7747 out_free_chunks: 7748 while (--i >= 0) { 7749 mem_descriptor = &ofap->sg_descriptor[i]; 7750 dma_free_coherent(dev, chunk_size, 7751 ctrl_info->pqi_ofa_chunk_virt_addr[i], 7752 get_unaligned_le64(&mem_descriptor->address)); 7753 } 7754 kfree(ctrl_info->pqi_ofa_chunk_virt_addr); 7755 7756 out: 7757 put_unaligned_le32 (0, &ofap->bytes_allocated); 7758 return -ENOMEM; 7759 } 7760 7761 static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info) 7762 { 7763 u32 total_size; 7764 u32 min_chunk_size; 7765 u32 chunk_sz; 7766 7767 total_size = le32_to_cpu( 7768 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated); 7769 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS; 7770 7771 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2) 7772 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz)) 7773 return 0; 7774 7775 return -ENOMEM; 7776 } 7777 7778 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, 7779 u32 bytes_requested) 7780 { 7781 struct pqi_ofa_memory *pqi_ofa_memory; 7782 struct device *dev; 7783 7784 dev = &ctrl_info->pci_dev->dev; 7785 pqi_ofa_memory = dma_alloc_coherent(dev, 7786 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, 7787 &ctrl_info->pqi_ofa_mem_dma_handle, 7788 GFP_KERNEL); 7789 7790 if (!pqi_ofa_memory) 7791 return; 7792 7793 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version); 7794 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE, 7795 sizeof(pqi_ofa_memory->signature)); 7796 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested); 7797 7798 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory; 7799 7800 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) { 7801 dev_err(dev, "Failed to allocate host buffer of size = %u", 7802 bytes_requested); 7803 } 7804 7805 return; 7806 } 7807 7808 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info) 7809 { 7810 int i; 7811 struct pqi_sg_descriptor *mem_descriptor; 7812 struct pqi_ofa_memory *ofap; 7813 7814 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7815 7816 if (!ofap) 7817 return; 7818 7819 if (!ofap->bytes_allocated) 7820 goto out; 7821 7822 mem_descriptor = ofap->sg_descriptor; 7823 7824 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors); 7825 i++) { 7826 dma_free_coherent(&ctrl_info->pci_dev->dev, 7827 get_unaligned_le32(&mem_descriptor[i].length), 7828 ctrl_info->pqi_ofa_chunk_virt_addr[i], 7829 get_unaligned_le64(&mem_descriptor[i].address)); 7830 } 7831 kfree(ctrl_info->pqi_ofa_chunk_virt_addr); 7832 7833 out: 7834 dma_free_coherent(&ctrl_info->pci_dev->dev, 7835 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap, 7836 ctrl_info->pqi_ofa_mem_dma_handle); 7837 ctrl_info->pqi_ofa_mem_virt_addr = NULL; 7838 } 7839 7840 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info) 7841 { 7842 struct pqi_vendor_general_request request; 7843 size_t size; 7844 struct pqi_ofa_memory *ofap; 7845 7846 memset(&request, 0, sizeof(request)); 7847 7848 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7849 7850 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; 7851 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 7852 &request.header.iu_length); 7853 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE, 7854 &request.function_code); 7855 7856 if (ofap) { 7857 size = offsetof(struct pqi_ofa_memory, sg_descriptor) + 7858 get_unaligned_le16(&ofap->num_memory_descriptors) * 7859 sizeof(struct pqi_sg_descriptor); 7860 7861 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle, 7862 &request.data.ofa_memory_allocation.buffer_address); 7863 put_unaligned_le32(size, 7864 &request.data.ofa_memory_allocation.buffer_length); 7865 7866 } 7867 7868 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 7869 0, NULL, NO_TIMEOUT); 7870 } 7871 7872 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info) 7873 { 7874 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); 7875 return pqi_ctrl_init_resume(ctrl_info); 7876 } 7877 7878 static void pqi_perform_lockup_action(void) 7879 { 7880 switch (pqi_lockup_action) { 7881 case PANIC: 7882 panic("FATAL: Smart Family Controller lockup detected"); 7883 break; 7884 case REBOOT: 7885 emergency_restart(); 7886 break; 7887 case NONE: 7888 default: 7889 break; 7890 } 7891 } 7892 7893 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = { 7894 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR, 7895 .status = SAM_STAT_CHECK_CONDITION, 7896 }; 7897 7898 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info) 7899 { 7900 unsigned int i; 7901 struct pqi_io_request *io_request; 7902 struct scsi_cmnd *scmd; 7903 7904 for (i = 0; i < ctrl_info->max_io_slots; i++) { 7905 io_request = &ctrl_info->io_request_pool[i]; 7906 if (atomic_read(&io_request->refcount) == 0) 7907 continue; 7908 7909 scmd = io_request->scmd; 7910 if (scmd) { 7911 set_host_byte(scmd, DID_NO_CONNECT); 7912 } else { 7913 io_request->status = -ENXIO; 7914 io_request->error_info = 7915 &pqi_ctrl_offline_raid_error_info; 7916 } 7917 7918 io_request->io_complete_callback(io_request, 7919 io_request->context); 7920 } 7921 } 7922 7923 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info) 7924 { 7925 pqi_perform_lockup_action(); 7926 pqi_stop_heartbeat_timer(ctrl_info); 7927 pqi_free_interrupts(ctrl_info); 7928 pqi_cancel_rescan_worker(ctrl_info); 7929 pqi_cancel_update_time_worker(ctrl_info); 7930 pqi_ctrl_wait_until_quiesced(ctrl_info); 7931 pqi_fail_all_outstanding_requests(ctrl_info); 7932 pqi_clear_all_queued_raid_bypass_retries(ctrl_info); 7933 pqi_ctrl_unblock_requests(ctrl_info); 7934 } 7935 7936 static void pqi_ctrl_offline_worker(struct work_struct *work) 7937 { 7938 struct pqi_ctrl_info *ctrl_info; 7939 7940 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work); 7941 pqi_take_ctrl_offline_deferred(ctrl_info); 7942 } 7943 7944 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info) 7945 { 7946 if (!ctrl_info->controller_online) 7947 return; 7948 7949 ctrl_info->controller_online = false; 7950 ctrl_info->pqi_mode_enabled = false; 7951 pqi_ctrl_block_requests(ctrl_info); 7952 if (!pqi_disable_ctrl_shutdown) 7953 sis_shutdown_ctrl(ctrl_info); 7954 pci_disable_device(ctrl_info->pci_dev); 7955 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n"); 7956 schedule_work(&ctrl_info->ctrl_offline_work); 7957 } 7958 7959 static void pqi_print_ctrl_info(struct pci_dev *pci_dev, 7960 const struct pci_device_id *id) 7961 { 7962 char *ctrl_description; 7963 7964 if (id->driver_data) 7965 ctrl_description = (char *)id->driver_data; 7966 else 7967 ctrl_description = "Microsemi Smart Family Controller"; 7968 7969 dev_info(&pci_dev->dev, "%s found\n", ctrl_description); 7970 } 7971 7972 static int pqi_pci_probe(struct pci_dev *pci_dev, 7973 const struct pci_device_id *id) 7974 { 7975 int rc; 7976 int node, cp_node; 7977 struct pqi_ctrl_info *ctrl_info; 7978 7979 pqi_print_ctrl_info(pci_dev, id); 7980 7981 if (pqi_disable_device_id_wildcards && 7982 id->subvendor == PCI_ANY_ID && 7983 id->subdevice == PCI_ANY_ID) { 7984 dev_warn(&pci_dev->dev, 7985 "controller not probed because device ID wildcards are disabled\n"); 7986 return -ENODEV; 7987 } 7988 7989 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID) 7990 dev_warn(&pci_dev->dev, 7991 "controller device ID matched using wildcards\n"); 7992 7993 node = dev_to_node(&pci_dev->dev); 7994 if (node == NUMA_NO_NODE) { 7995 cp_node = cpu_to_node(0); 7996 if (cp_node == NUMA_NO_NODE) 7997 cp_node = 0; 7998 set_dev_node(&pci_dev->dev, cp_node); 7999 } 8000 8001 ctrl_info = pqi_alloc_ctrl_info(node); 8002 if (!ctrl_info) { 8003 dev_err(&pci_dev->dev, 8004 "failed to allocate controller info block\n"); 8005 return -ENOMEM; 8006 } 8007 8008 ctrl_info->pci_dev = pci_dev; 8009 8010 rc = pqi_pci_init(ctrl_info); 8011 if (rc) 8012 goto error; 8013 8014 rc = pqi_ctrl_init(ctrl_info); 8015 if (rc) 8016 goto error; 8017 8018 return 0; 8019 8020 error: 8021 pqi_remove_ctrl(ctrl_info); 8022 8023 return rc; 8024 } 8025 8026 static void pqi_pci_remove(struct pci_dev *pci_dev) 8027 { 8028 struct pqi_ctrl_info *ctrl_info; 8029 8030 ctrl_info = pci_get_drvdata(pci_dev); 8031 if (!ctrl_info) 8032 return; 8033 8034 ctrl_info->in_shutdown = true; 8035 8036 pqi_remove_ctrl(ctrl_info); 8037 } 8038 8039 static void pqi_crash_if_pending_command(struct pqi_ctrl_info *ctrl_info) 8040 { 8041 unsigned int i; 8042 struct pqi_io_request *io_request; 8043 struct scsi_cmnd *scmd; 8044 8045 for (i = 0; i < ctrl_info->max_io_slots; i++) { 8046 io_request = &ctrl_info->io_request_pool[i]; 8047 if (atomic_read(&io_request->refcount) == 0) 8048 continue; 8049 scmd = io_request->scmd; 8050 WARN_ON(scmd != NULL); /* IO command from SML */ 8051 WARN_ON(scmd == NULL); /* Non-IO cmd or driver initiated*/ 8052 } 8053 } 8054 8055 static void pqi_shutdown(struct pci_dev *pci_dev) 8056 { 8057 int rc; 8058 struct pqi_ctrl_info *ctrl_info; 8059 8060 ctrl_info = pci_get_drvdata(pci_dev); 8061 if (!ctrl_info) { 8062 dev_err(&pci_dev->dev, 8063 "cache could not be flushed\n"); 8064 return; 8065 } 8066 8067 pqi_disable_events(ctrl_info); 8068 pqi_wait_until_ofa_finished(ctrl_info); 8069 pqi_cancel_update_time_worker(ctrl_info); 8070 pqi_cancel_rescan_worker(ctrl_info); 8071 pqi_cancel_event_worker(ctrl_info); 8072 8073 pqi_ctrl_shutdown_start(ctrl_info); 8074 pqi_ctrl_wait_until_quiesced(ctrl_info); 8075 8076 rc = pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); 8077 if (rc) { 8078 dev_err(&pci_dev->dev, 8079 "wait for pending I/O failed\n"); 8080 return; 8081 } 8082 8083 pqi_ctrl_block_device_reset(ctrl_info); 8084 pqi_wait_until_lun_reset_finished(ctrl_info); 8085 8086 /* 8087 * Write all data in the controller's battery-backed cache to 8088 * storage. 8089 */ 8090 rc = pqi_flush_cache(ctrl_info, SHUTDOWN); 8091 if (rc) 8092 dev_err(&pci_dev->dev, 8093 "unable to flush controller cache\n"); 8094 8095 pqi_ctrl_block_requests(ctrl_info); 8096 8097 rc = pqi_ctrl_wait_for_pending_sync_cmds(ctrl_info); 8098 if (rc) { 8099 dev_err(&pci_dev->dev, 8100 "wait for pending sync cmds failed\n"); 8101 return; 8102 } 8103 8104 pqi_crash_if_pending_command(ctrl_info); 8105 pqi_reset(ctrl_info); 8106 } 8107 8108 static void pqi_process_lockup_action_param(void) 8109 { 8110 unsigned int i; 8111 8112 if (!pqi_lockup_action_param) 8113 return; 8114 8115 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 8116 if (strcmp(pqi_lockup_action_param, 8117 pqi_lockup_actions[i].name) == 0) { 8118 pqi_lockup_action = pqi_lockup_actions[i].action; 8119 return; 8120 } 8121 } 8122 8123 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n", 8124 DRIVER_NAME_SHORT, pqi_lockup_action_param); 8125 } 8126 8127 static void pqi_process_module_params(void) 8128 { 8129 pqi_process_lockup_action_param(); 8130 } 8131 8132 static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state) 8133 { 8134 struct pqi_ctrl_info *ctrl_info; 8135 8136 ctrl_info = pci_get_drvdata(pci_dev); 8137 8138 pqi_disable_events(ctrl_info); 8139 pqi_cancel_update_time_worker(ctrl_info); 8140 pqi_cancel_rescan_worker(ctrl_info); 8141 pqi_wait_until_scan_finished(ctrl_info); 8142 pqi_wait_until_lun_reset_finished(ctrl_info); 8143 pqi_wait_until_ofa_finished(ctrl_info); 8144 pqi_flush_cache(ctrl_info, SUSPEND); 8145 pqi_ctrl_block_requests(ctrl_info); 8146 pqi_ctrl_wait_until_quiesced(ctrl_info); 8147 pqi_wait_until_inbound_queues_empty(ctrl_info); 8148 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); 8149 pqi_stop_heartbeat_timer(ctrl_info); 8150 8151 if (state.event == PM_EVENT_FREEZE) 8152 return 0; 8153 8154 pci_save_state(pci_dev); 8155 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)); 8156 8157 ctrl_info->controller_online = false; 8158 ctrl_info->pqi_mode_enabled = false; 8159 8160 return 0; 8161 } 8162 8163 static __maybe_unused int pqi_resume(struct pci_dev *pci_dev) 8164 { 8165 int rc; 8166 struct pqi_ctrl_info *ctrl_info; 8167 8168 ctrl_info = pci_get_drvdata(pci_dev); 8169 8170 if (pci_dev->current_state != PCI_D0) { 8171 ctrl_info->max_hw_queue_index = 0; 8172 pqi_free_interrupts(ctrl_info); 8173 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX); 8174 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler, 8175 IRQF_SHARED, DRIVER_NAME_SHORT, 8176 &ctrl_info->queue_groups[0]); 8177 if (rc) { 8178 dev_err(&ctrl_info->pci_dev->dev, 8179 "irq %u init failed with error %d\n", 8180 pci_dev->irq, rc); 8181 return rc; 8182 } 8183 pqi_start_heartbeat_timer(ctrl_info); 8184 pqi_ctrl_unblock_requests(ctrl_info); 8185 return 0; 8186 } 8187 8188 pci_set_power_state(pci_dev, PCI_D0); 8189 pci_restore_state(pci_dev); 8190 8191 return pqi_ctrl_init_resume(ctrl_info); 8192 } 8193 8194 /* Define the PCI IDs for the controllers that we support. */ 8195 static const struct pci_device_id pqi_pci_id_table[] = { 8196 { 8197 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8198 0x105b, 0x1211) 8199 }, 8200 { 8201 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8202 0x105b, 0x1321) 8203 }, 8204 { 8205 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8206 0x152d, 0x8a22) 8207 }, 8208 { 8209 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8210 0x152d, 0x8a23) 8211 }, 8212 { 8213 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8214 0x152d, 0x8a24) 8215 }, 8216 { 8217 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8218 0x152d, 0x8a36) 8219 }, 8220 { 8221 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8222 0x152d, 0x8a37) 8223 }, 8224 { 8225 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8226 0x193d, 0x1104) 8227 }, 8228 { 8229 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8230 0x193d, 0x1105) 8231 }, 8232 { 8233 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8234 0x193d, 0x1106) 8235 }, 8236 { 8237 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8238 0x193d, 0x1107) 8239 }, 8240 { 8241 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8242 0x193d, 0x8460) 8243 }, 8244 { 8245 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8246 0x193d, 0x8461) 8247 }, 8248 { 8249 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8250 0x193d, 0xc460) 8251 }, 8252 { 8253 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8254 0x193d, 0xc461) 8255 }, 8256 { 8257 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8258 0x193d, 0xf460) 8259 }, 8260 { 8261 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8262 0x193d, 0xf461) 8263 }, 8264 { 8265 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8266 0x1bd4, 0x0045) 8267 }, 8268 { 8269 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8270 0x1bd4, 0x0046) 8271 }, 8272 { 8273 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8274 0x1bd4, 0x0047) 8275 }, 8276 { 8277 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8278 0x1bd4, 0x0048) 8279 }, 8280 { 8281 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8282 0x1bd4, 0x004a) 8283 }, 8284 { 8285 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8286 0x1bd4, 0x004b) 8287 }, 8288 { 8289 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8290 0x1bd4, 0x004c) 8291 }, 8292 { 8293 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8294 0x1bd4, 0x004f) 8295 }, 8296 { 8297 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8298 0x19e5, 0xd227) 8299 }, 8300 { 8301 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8302 0x19e5, 0xd228) 8303 }, 8304 { 8305 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8306 0x19e5, 0xd229) 8307 }, 8308 { 8309 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8310 0x19e5, 0xd22a) 8311 }, 8312 { 8313 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8314 0x19e5, 0xd22b) 8315 }, 8316 { 8317 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8318 0x19e5, 0xd22c) 8319 }, 8320 { 8321 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8322 PCI_VENDOR_ID_ADAPTEC2, 0x0110) 8323 }, 8324 { 8325 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8326 PCI_VENDOR_ID_ADAPTEC2, 0x0608) 8327 }, 8328 { 8329 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8330 PCI_VENDOR_ID_ADAPTEC2, 0x0800) 8331 }, 8332 { 8333 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8334 PCI_VENDOR_ID_ADAPTEC2, 0x0801) 8335 }, 8336 { 8337 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8338 PCI_VENDOR_ID_ADAPTEC2, 0x0802) 8339 }, 8340 { 8341 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8342 PCI_VENDOR_ID_ADAPTEC2, 0x0803) 8343 }, 8344 { 8345 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8346 PCI_VENDOR_ID_ADAPTEC2, 0x0804) 8347 }, 8348 { 8349 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8350 PCI_VENDOR_ID_ADAPTEC2, 0x0805) 8351 }, 8352 { 8353 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8354 PCI_VENDOR_ID_ADAPTEC2, 0x0806) 8355 }, 8356 { 8357 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8358 PCI_VENDOR_ID_ADAPTEC2, 0x0807) 8359 }, 8360 { 8361 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8362 PCI_VENDOR_ID_ADAPTEC2, 0x0808) 8363 }, 8364 { 8365 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8366 PCI_VENDOR_ID_ADAPTEC2, 0x0809) 8367 }, 8368 { 8369 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8370 PCI_VENDOR_ID_ADAPTEC2, 0x080a) 8371 }, 8372 { 8373 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8374 PCI_VENDOR_ID_ADAPTEC2, 0x0900) 8375 }, 8376 { 8377 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8378 PCI_VENDOR_ID_ADAPTEC2, 0x0901) 8379 }, 8380 { 8381 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8382 PCI_VENDOR_ID_ADAPTEC2, 0x0902) 8383 }, 8384 { 8385 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8386 PCI_VENDOR_ID_ADAPTEC2, 0x0903) 8387 }, 8388 { 8389 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8390 PCI_VENDOR_ID_ADAPTEC2, 0x0904) 8391 }, 8392 { 8393 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8394 PCI_VENDOR_ID_ADAPTEC2, 0x0905) 8395 }, 8396 { 8397 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8398 PCI_VENDOR_ID_ADAPTEC2, 0x0906) 8399 }, 8400 { 8401 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8402 PCI_VENDOR_ID_ADAPTEC2, 0x0907) 8403 }, 8404 { 8405 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8406 PCI_VENDOR_ID_ADAPTEC2, 0x0908) 8407 }, 8408 { 8409 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8410 PCI_VENDOR_ID_ADAPTEC2, 0x090a) 8411 }, 8412 { 8413 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8414 PCI_VENDOR_ID_ADAPTEC2, 0x1200) 8415 }, 8416 { 8417 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8418 PCI_VENDOR_ID_ADAPTEC2, 0x1201) 8419 }, 8420 { 8421 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8422 PCI_VENDOR_ID_ADAPTEC2, 0x1202) 8423 }, 8424 { 8425 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8426 PCI_VENDOR_ID_ADAPTEC2, 0x1280) 8427 }, 8428 { 8429 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8430 PCI_VENDOR_ID_ADAPTEC2, 0x1281) 8431 }, 8432 { 8433 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8434 PCI_VENDOR_ID_ADAPTEC2, 0x1282) 8435 }, 8436 { 8437 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8438 PCI_VENDOR_ID_ADAPTEC2, 0x1300) 8439 }, 8440 { 8441 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8442 PCI_VENDOR_ID_ADAPTEC2, 0x1301) 8443 }, 8444 { 8445 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8446 PCI_VENDOR_ID_ADAPTEC2, 0x1302) 8447 }, 8448 { 8449 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8450 PCI_VENDOR_ID_ADAPTEC2, 0x1303) 8451 }, 8452 { 8453 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8454 PCI_VENDOR_ID_ADAPTEC2, 0x1380) 8455 }, 8456 { 8457 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8458 PCI_VENDOR_ID_ADVANTECH, 0x8312) 8459 }, 8460 { 8461 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8462 PCI_VENDOR_ID_DELL, 0x1fe0) 8463 }, 8464 { 8465 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8466 PCI_VENDOR_ID_HP, 0x0600) 8467 }, 8468 { 8469 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8470 PCI_VENDOR_ID_HP, 0x0601) 8471 }, 8472 { 8473 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8474 PCI_VENDOR_ID_HP, 0x0602) 8475 }, 8476 { 8477 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8478 PCI_VENDOR_ID_HP, 0x0603) 8479 }, 8480 { 8481 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8482 PCI_VENDOR_ID_HP, 0x0609) 8483 }, 8484 { 8485 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8486 PCI_VENDOR_ID_HP, 0x0650) 8487 }, 8488 { 8489 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8490 PCI_VENDOR_ID_HP, 0x0651) 8491 }, 8492 { 8493 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8494 PCI_VENDOR_ID_HP, 0x0652) 8495 }, 8496 { 8497 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8498 PCI_VENDOR_ID_HP, 0x0653) 8499 }, 8500 { 8501 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8502 PCI_VENDOR_ID_HP, 0x0654) 8503 }, 8504 { 8505 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8506 PCI_VENDOR_ID_HP, 0x0655) 8507 }, 8508 { 8509 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8510 PCI_VENDOR_ID_HP, 0x0700) 8511 }, 8512 { 8513 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8514 PCI_VENDOR_ID_HP, 0x0701) 8515 }, 8516 { 8517 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8518 PCI_VENDOR_ID_HP, 0x1001) 8519 }, 8520 { 8521 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8522 PCI_VENDOR_ID_HP, 0x1100) 8523 }, 8524 { 8525 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8526 PCI_VENDOR_ID_HP, 0x1101) 8527 }, 8528 { 8529 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8530 0x1d8d, 0x0800) 8531 }, 8532 { 8533 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8534 0x1d8d, 0x0908) 8535 }, 8536 { 8537 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8538 0x1d8d, 0x0806) 8539 }, 8540 { 8541 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8542 0x1d8d, 0x0916) 8543 }, 8544 { 8545 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8546 PCI_VENDOR_ID_GIGABYTE, 0x1000) 8547 }, 8548 { 8549 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8550 PCI_ANY_ID, PCI_ANY_ID) 8551 }, 8552 { 0 } 8553 }; 8554 8555 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table); 8556 8557 static struct pci_driver pqi_pci_driver = { 8558 .name = DRIVER_NAME_SHORT, 8559 .id_table = pqi_pci_id_table, 8560 .probe = pqi_pci_probe, 8561 .remove = pqi_pci_remove, 8562 .shutdown = pqi_shutdown, 8563 #if defined(CONFIG_PM) 8564 .suspend = pqi_suspend, 8565 .resume = pqi_resume, 8566 #endif 8567 }; 8568 8569 static int __init pqi_init(void) 8570 { 8571 int rc; 8572 8573 pr_info(DRIVER_NAME "\n"); 8574 8575 pqi_sas_transport_template = sas_attach_transport(&pqi_sas_transport_functions); 8576 if (!pqi_sas_transport_template) 8577 return -ENODEV; 8578 8579 pqi_process_module_params(); 8580 8581 rc = pci_register_driver(&pqi_pci_driver); 8582 if (rc) 8583 sas_release_transport(pqi_sas_transport_template); 8584 8585 return rc; 8586 } 8587 8588 static void __exit pqi_cleanup(void) 8589 { 8590 pci_unregister_driver(&pqi_pci_driver); 8591 sas_release_transport(pqi_sas_transport_template); 8592 } 8593 8594 module_init(pqi_init); 8595 module_exit(pqi_cleanup); 8596 8597 static void __attribute__((unused)) verify_structures(void) 8598 { 8599 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8600 sis_host_to_ctrl_doorbell) != 0x20); 8601 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8602 sis_interrupt_mask) != 0x34); 8603 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8604 sis_ctrl_to_host_doorbell) != 0x9c); 8605 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8606 sis_ctrl_to_host_doorbell_clear) != 0xa0); 8607 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8608 sis_driver_scratch) != 0xb0); 8609 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8610 sis_firmware_status) != 0xbc); 8611 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8612 sis_mailbox) != 0x1000); 8613 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8614 pqi_registers) != 0x4000); 8615 8616 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8617 iu_type) != 0x0); 8618 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8619 iu_length) != 0x2); 8620 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8621 response_queue_id) != 0x4); 8622 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8623 work_area) != 0x6); 8624 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8); 8625 8626 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8627 status) != 0x0); 8628 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8629 service_response) != 0x1); 8630 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8631 data_present) != 0x2); 8632 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8633 reserved) != 0x3); 8634 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8635 residual_count) != 0x4); 8636 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8637 data_length) != 0x8); 8638 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8639 reserved1) != 0xa); 8640 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8641 data) != 0xc); 8642 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c); 8643 8644 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8645 data_in_result) != 0x0); 8646 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8647 data_out_result) != 0x1); 8648 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8649 reserved) != 0x2); 8650 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8651 status) != 0x5); 8652 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8653 status_qualifier) != 0x6); 8654 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8655 sense_data_length) != 0x8); 8656 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8657 response_data_length) != 0xa); 8658 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8659 data_in_transferred) != 0xc); 8660 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8661 data_out_transferred) != 0x10); 8662 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8663 data) != 0x14); 8664 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114); 8665 8666 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8667 signature) != 0x0); 8668 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8669 function_and_status_code) != 0x8); 8670 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8671 max_admin_iq_elements) != 0x10); 8672 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8673 max_admin_oq_elements) != 0x11); 8674 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8675 admin_iq_element_length) != 0x12); 8676 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8677 admin_oq_element_length) != 0x13); 8678 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8679 max_reset_timeout) != 0x14); 8680 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8681 legacy_intx_status) != 0x18); 8682 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8683 legacy_intx_mask_set) != 0x1c); 8684 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8685 legacy_intx_mask_clear) != 0x20); 8686 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8687 device_status) != 0x40); 8688 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8689 admin_iq_pi_offset) != 0x48); 8690 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8691 admin_oq_ci_offset) != 0x50); 8692 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8693 admin_iq_element_array_addr) != 0x58); 8694 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8695 admin_oq_element_array_addr) != 0x60); 8696 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8697 admin_iq_ci_addr) != 0x68); 8698 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8699 admin_oq_pi_addr) != 0x70); 8700 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8701 admin_iq_num_elements) != 0x78); 8702 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8703 admin_oq_num_elements) != 0x79); 8704 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8705 admin_queue_int_msg_num) != 0x7a); 8706 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8707 device_error) != 0x80); 8708 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8709 error_details) != 0x88); 8710 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8711 device_reset) != 0x90); 8712 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8713 power_action) != 0x94); 8714 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100); 8715 8716 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8717 header.iu_type) != 0); 8718 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8719 header.iu_length) != 2); 8720 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8721 header.work_area) != 6); 8722 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8723 request_id) != 8); 8724 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8725 function_code) != 10); 8726 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8727 data.report_device_capability.buffer_length) != 44); 8728 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8729 data.report_device_capability.sg_descriptor) != 48); 8730 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8731 data.create_operational_iq.queue_id) != 12); 8732 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8733 data.create_operational_iq.element_array_addr) != 16); 8734 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8735 data.create_operational_iq.ci_addr) != 24); 8736 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8737 data.create_operational_iq.num_elements) != 32); 8738 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8739 data.create_operational_iq.element_length) != 34); 8740 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8741 data.create_operational_iq.queue_protocol) != 36); 8742 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8743 data.create_operational_oq.queue_id) != 12); 8744 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8745 data.create_operational_oq.element_array_addr) != 16); 8746 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8747 data.create_operational_oq.pi_addr) != 24); 8748 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8749 data.create_operational_oq.num_elements) != 32); 8750 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8751 data.create_operational_oq.element_length) != 34); 8752 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8753 data.create_operational_oq.queue_protocol) != 36); 8754 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8755 data.create_operational_oq.int_msg_num) != 40); 8756 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8757 data.create_operational_oq.coalescing_count) != 42); 8758 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8759 data.create_operational_oq.min_coalescing_time) != 44); 8760 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8761 data.create_operational_oq.max_coalescing_time) != 48); 8762 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8763 data.delete_operational_queue.queue_id) != 12); 8764 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64); 8765 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request, 8766 data.create_operational_iq) != 64 - 11); 8767 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request, 8768 data.create_operational_oq) != 64 - 11); 8769 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request, 8770 data.delete_operational_queue) != 64 - 11); 8771 8772 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8773 header.iu_type) != 0); 8774 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8775 header.iu_length) != 2); 8776 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8777 header.work_area) != 6); 8778 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8779 request_id) != 8); 8780 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8781 function_code) != 10); 8782 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8783 status) != 11); 8784 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8785 data.create_operational_iq.status_descriptor) != 12); 8786 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8787 data.create_operational_iq.iq_pi_offset) != 16); 8788 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8789 data.create_operational_oq.status_descriptor) != 12); 8790 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8791 data.create_operational_oq.oq_ci_offset) != 16); 8792 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64); 8793 8794 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8795 header.iu_type) != 0); 8796 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8797 header.iu_length) != 2); 8798 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8799 header.response_queue_id) != 4); 8800 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8801 header.work_area) != 6); 8802 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8803 request_id) != 8); 8804 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8805 nexus_id) != 10); 8806 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8807 buffer_length) != 12); 8808 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8809 lun_number) != 16); 8810 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8811 protocol_specific) != 24); 8812 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8813 error_index) != 27); 8814 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8815 cdb) != 32); 8816 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8817 timeout) != 60); 8818 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8819 sg_descriptors) != 64); 8820 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) != 8821 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 8822 8823 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8824 header.iu_type) != 0); 8825 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8826 header.iu_length) != 2); 8827 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8828 header.response_queue_id) != 4); 8829 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8830 header.work_area) != 6); 8831 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8832 request_id) != 8); 8833 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8834 nexus_id) != 12); 8835 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8836 buffer_length) != 16); 8837 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8838 data_encryption_key_index) != 22); 8839 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8840 encrypt_tweak_lower) != 24); 8841 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8842 encrypt_tweak_upper) != 28); 8843 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8844 cdb) != 32); 8845 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8846 error_index) != 48); 8847 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8848 num_sg_descriptors) != 50); 8849 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8850 cdb_length) != 51); 8851 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8852 lun_number) != 52); 8853 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8854 sg_descriptors) != 64); 8855 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) != 8856 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 8857 8858 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8859 header.iu_type) != 0); 8860 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8861 header.iu_length) != 2); 8862 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8863 request_id) != 8); 8864 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8865 error_index) != 10); 8866 8867 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8868 header.iu_type) != 0); 8869 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8870 header.iu_length) != 2); 8871 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8872 header.response_queue_id) != 4); 8873 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8874 request_id) != 8); 8875 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8876 data.report_event_configuration.buffer_length) != 12); 8877 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8878 data.report_event_configuration.sg_descriptors) != 16); 8879 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8880 data.set_event_configuration.global_event_oq_id) != 10); 8881 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8882 data.set_event_configuration.buffer_length) != 12); 8883 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8884 data.set_event_configuration.sg_descriptors) != 16); 8885 8886 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 8887 max_inbound_iu_length) != 6); 8888 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 8889 max_outbound_iu_length) != 14); 8890 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16); 8891 8892 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8893 data_length) != 0); 8894 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8895 iq_arbitration_priority_support_bitmask) != 8); 8896 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8897 maximum_aw_a) != 9); 8898 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8899 maximum_aw_b) != 10); 8900 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8901 maximum_aw_c) != 11); 8902 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8903 max_inbound_queues) != 16); 8904 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8905 max_elements_per_iq) != 18); 8906 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8907 max_iq_element_length) != 24); 8908 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8909 min_iq_element_length) != 26); 8910 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8911 max_outbound_queues) != 30); 8912 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8913 max_elements_per_oq) != 32); 8914 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8915 intr_coalescing_time_granularity) != 34); 8916 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8917 max_oq_element_length) != 36); 8918 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8919 min_oq_element_length) != 38); 8920 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8921 iu_layer_descriptors) != 64); 8922 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576); 8923 8924 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 8925 event_type) != 0); 8926 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 8927 oq_id) != 2); 8928 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4); 8929 8930 BUILD_BUG_ON(offsetof(struct pqi_event_config, 8931 num_event_descriptors) != 2); 8932 BUILD_BUG_ON(offsetof(struct pqi_event_config, 8933 descriptors) != 4); 8934 8935 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS != 8936 ARRAY_SIZE(pqi_supported_event_types)); 8937 8938 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8939 header.iu_type) != 0); 8940 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8941 header.iu_length) != 2); 8942 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8943 event_type) != 8); 8944 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8945 event_id) != 10); 8946 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8947 additional_event_id) != 12); 8948 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8949 data) != 16); 8950 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32); 8951 8952 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8953 header.iu_type) != 0); 8954 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8955 header.iu_length) != 2); 8956 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8957 event_type) != 8); 8958 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8959 event_id) != 10); 8960 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8961 additional_event_id) != 12); 8962 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16); 8963 8964 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8965 header.iu_type) != 0); 8966 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8967 header.iu_length) != 2); 8968 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8969 request_id) != 8); 8970 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8971 nexus_id) != 10); 8972 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8973 timeout) != 14); 8974 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8975 lun_number) != 16); 8976 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8977 protocol_specific) != 24); 8978 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8979 outbound_queue_id_to_manage) != 26); 8980 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8981 request_id_to_manage) != 28); 8982 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8983 task_management_function) != 30); 8984 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32); 8985 8986 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8987 header.iu_type) != 0); 8988 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8989 header.iu_length) != 2); 8990 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8991 request_id) != 8); 8992 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8993 nexus_id) != 10); 8994 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8995 additional_response_info) != 12); 8996 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8997 response_code) != 15); 8998 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16); 8999 9000 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9001 configured_logical_drive_count) != 0); 9002 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9003 configuration_signature) != 1); 9004 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9005 firmware_version) != 5); 9006 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9007 extended_logical_unit_count) != 154); 9008 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9009 firmware_build_number) != 190); 9010 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 9011 controller_mode) != 292); 9012 9013 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9014 phys_bay_in_box) != 115); 9015 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9016 device_type) != 120); 9017 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9018 redundant_path_present_map) != 1736); 9019 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9020 active_path_number) != 1738); 9021 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9022 alternate_paths_phys_connector) != 1739); 9023 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9024 alternate_paths_phys_box_on_port) != 1755); 9025 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 9026 current_queue_depth_limit) != 1796); 9027 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560); 9028 9029 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255); 9030 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255); 9031 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH % 9032 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 9033 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH % 9034 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 9035 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560); 9036 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH % 9037 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 9038 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560); 9039 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH % 9040 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 9041 9042 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS); 9043 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= 9044 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP); 9045 } 9046