1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * driver for Microsemi PQI-based storage controllers 4 * Copyright (c) 2019 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 "1.2.6-015" 37 #define DRIVER_MAJOR 1 38 #define DRIVER_MINOR 2 39 #define DRIVER_RELEASE 6 40 #define DRIVER_REVISION 15 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 char *raid_levels[] = { 149 "RAID-0", 150 "RAID-4", 151 "RAID-1(1+0)", 152 "RAID-5", 153 "RAID-5+1", 154 "RAID-ADG", 155 "RAID-1(ADM)", 156 }; 157 158 static char *pqi_raid_level_to_string(u8 raid_level) 159 { 160 if (raid_level < ARRAY_SIZE(raid_levels)) 161 return raid_levels[raid_level]; 162 163 return "RAID UNKNOWN"; 164 } 165 166 #define SA_RAID_0 0 167 #define SA_RAID_4 1 168 #define SA_RAID_1 2 /* also used for RAID 10 */ 169 #define SA_RAID_5 3 /* also used for RAID 50 */ 170 #define SA_RAID_51 4 171 #define SA_RAID_6 5 /* also used for RAID 60 */ 172 #define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */ 173 #define SA_RAID_MAX SA_RAID_ADM 174 #define SA_RAID_UNKNOWN 0xff 175 176 static inline void pqi_scsi_done(struct scsi_cmnd *scmd) 177 { 178 pqi_prep_for_scsi_done(scmd); 179 scmd->scsi_done(scmd); 180 } 181 182 static inline void pqi_disable_write_same(struct scsi_device *sdev) 183 { 184 sdev->no_write_same = 1; 185 } 186 187 static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2) 188 { 189 return memcmp(scsi3addr1, scsi3addr2, 8) == 0; 190 } 191 192 static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device) 193 { 194 return !device->is_physical_device; 195 } 196 197 static inline bool pqi_is_external_raid_addr(u8 *scsi3addr) 198 { 199 return scsi3addr[2] != 0; 200 } 201 202 static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info) 203 { 204 if (ctrl_info->controller_online) 205 if (!sis_is_firmware_running(ctrl_info)) 206 pqi_take_ctrl_offline(ctrl_info); 207 } 208 209 static inline bool pqi_is_hba_lunid(u8 *scsi3addr) 210 { 211 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID); 212 } 213 214 static inline enum pqi_ctrl_mode pqi_get_ctrl_mode( 215 struct pqi_ctrl_info *ctrl_info) 216 { 217 return sis_read_driver_scratch(ctrl_info); 218 } 219 220 static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info, 221 enum pqi_ctrl_mode mode) 222 { 223 sis_write_driver_scratch(ctrl_info, mode); 224 } 225 226 static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info) 227 { 228 ctrl_info->block_requests = true; 229 scsi_block_requests(ctrl_info->scsi_host); 230 } 231 232 static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info) 233 { 234 ctrl_info->block_requests = false; 235 wake_up_all(&ctrl_info->block_requests_wait); 236 pqi_retry_raid_bypass_requests(ctrl_info); 237 scsi_unblock_requests(ctrl_info->scsi_host); 238 } 239 240 static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info, 241 unsigned long timeout_msecs) 242 { 243 unsigned long remaining_msecs; 244 245 if (!pqi_ctrl_blocked(ctrl_info)) 246 return timeout_msecs; 247 248 atomic_inc(&ctrl_info->num_blocked_threads); 249 250 if (timeout_msecs == NO_TIMEOUT) { 251 wait_event(ctrl_info->block_requests_wait, 252 !pqi_ctrl_blocked(ctrl_info)); 253 remaining_msecs = timeout_msecs; 254 } else { 255 unsigned long remaining_jiffies; 256 257 remaining_jiffies = 258 wait_event_timeout(ctrl_info->block_requests_wait, 259 !pqi_ctrl_blocked(ctrl_info), 260 msecs_to_jiffies(timeout_msecs)); 261 remaining_msecs = jiffies_to_msecs(remaining_jiffies); 262 } 263 264 atomic_dec(&ctrl_info->num_blocked_threads); 265 266 return remaining_msecs; 267 } 268 269 static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info) 270 { 271 while (atomic_read(&ctrl_info->num_busy_threads) > 272 atomic_read(&ctrl_info->num_blocked_threads)) 273 usleep_range(1000, 2000); 274 } 275 276 static inline bool pqi_device_offline(struct pqi_scsi_dev *device) 277 { 278 return device->device_offline; 279 } 280 281 static inline void pqi_device_reset_start(struct pqi_scsi_dev *device) 282 { 283 device->in_reset = true; 284 } 285 286 static inline void pqi_device_reset_done(struct pqi_scsi_dev *device) 287 { 288 device->in_reset = false; 289 } 290 291 static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device) 292 { 293 return device->in_reset; 294 } 295 296 static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info) 297 { 298 ctrl_info->in_ofa = true; 299 } 300 301 static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info) 302 { 303 ctrl_info->in_ofa = false; 304 } 305 306 static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info) 307 { 308 return ctrl_info->in_ofa; 309 } 310 311 static inline void pqi_device_remove_start(struct pqi_scsi_dev *device) 312 { 313 device->in_remove = true; 314 } 315 316 static inline bool pqi_device_in_remove(struct pqi_ctrl_info *ctrl_info, 317 struct pqi_scsi_dev *device) 318 { 319 return device->in_remove && !ctrl_info->in_shutdown; 320 } 321 322 static inline void pqi_schedule_rescan_worker_with_delay( 323 struct pqi_ctrl_info *ctrl_info, unsigned long delay) 324 { 325 if (pqi_ctrl_offline(ctrl_info)) 326 return; 327 if (pqi_ctrl_in_ofa(ctrl_info)) 328 return; 329 330 schedule_delayed_work(&ctrl_info->rescan_work, delay); 331 } 332 333 static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info) 334 { 335 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0); 336 } 337 338 #define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ) 339 340 static inline void pqi_schedule_rescan_worker_delayed( 341 struct pqi_ctrl_info *ctrl_info) 342 { 343 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY); 344 } 345 346 static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info) 347 { 348 cancel_delayed_work_sync(&ctrl_info->rescan_work); 349 } 350 351 static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info) 352 { 353 if (!ctrl_info->heartbeat_counter) 354 return 0; 355 356 return readl(ctrl_info->heartbeat_counter); 357 } 358 359 static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info) 360 { 361 if (!ctrl_info->soft_reset_status) 362 return 0; 363 364 return readb(ctrl_info->soft_reset_status); 365 } 366 367 static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info, 368 u8 clear) 369 { 370 u8 status; 371 372 if (!ctrl_info->soft_reset_status) 373 return; 374 375 status = pqi_read_soft_reset_status(ctrl_info); 376 status &= ~clear; 377 writeb(status, ctrl_info->soft_reset_status); 378 } 379 380 static int pqi_map_single(struct pci_dev *pci_dev, 381 struct pqi_sg_descriptor *sg_descriptor, void *buffer, 382 size_t buffer_length, enum dma_data_direction data_direction) 383 { 384 dma_addr_t bus_address; 385 386 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE) 387 return 0; 388 389 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length, 390 data_direction); 391 if (dma_mapping_error(&pci_dev->dev, bus_address)) 392 return -ENOMEM; 393 394 put_unaligned_le64((u64)bus_address, &sg_descriptor->address); 395 put_unaligned_le32(buffer_length, &sg_descriptor->length); 396 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 397 398 return 0; 399 } 400 401 static void pqi_pci_unmap(struct pci_dev *pci_dev, 402 struct pqi_sg_descriptor *descriptors, int num_descriptors, 403 enum dma_data_direction data_direction) 404 { 405 int i; 406 407 if (data_direction == DMA_NONE) 408 return; 409 410 for (i = 0; i < num_descriptors; i++) 411 dma_unmap_single(&pci_dev->dev, 412 (dma_addr_t)get_unaligned_le64(&descriptors[i].address), 413 get_unaligned_le32(&descriptors[i].length), 414 data_direction); 415 } 416 417 static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info, 418 struct pqi_raid_path_request *request, u8 cmd, 419 u8 *scsi3addr, void *buffer, size_t buffer_length, 420 u16 vpd_page, enum dma_data_direction *dir) 421 { 422 u8 *cdb; 423 size_t cdb_length = buffer_length; 424 425 memset(request, 0, sizeof(*request)); 426 427 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 428 put_unaligned_le16(offsetof(struct pqi_raid_path_request, 429 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH, 430 &request->header.iu_length); 431 put_unaligned_le32(buffer_length, &request->buffer_length); 432 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number)); 433 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 434 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 435 436 cdb = request->cdb; 437 438 switch (cmd) { 439 case INQUIRY: 440 request->data_direction = SOP_READ_FLAG; 441 cdb[0] = INQUIRY; 442 if (vpd_page & VPD_PAGE) { 443 cdb[1] = 0x1; 444 cdb[2] = (u8)vpd_page; 445 } 446 cdb[4] = (u8)cdb_length; 447 break; 448 case CISS_REPORT_LOG: 449 case CISS_REPORT_PHYS: 450 request->data_direction = SOP_READ_FLAG; 451 cdb[0] = cmd; 452 if (cmd == CISS_REPORT_PHYS) 453 cdb[1] = CISS_REPORT_PHYS_EXTENDED; 454 else 455 cdb[1] = CISS_REPORT_LOG_EXTENDED; 456 put_unaligned_be32(cdb_length, &cdb[6]); 457 break; 458 case CISS_GET_RAID_MAP: 459 request->data_direction = SOP_READ_FLAG; 460 cdb[0] = CISS_READ; 461 cdb[1] = CISS_GET_RAID_MAP; 462 put_unaligned_be32(cdb_length, &cdb[6]); 463 break; 464 case SA_FLUSH_CACHE: 465 request->data_direction = SOP_WRITE_FLAG; 466 cdb[0] = BMIC_WRITE; 467 cdb[6] = BMIC_FLUSH_CACHE; 468 put_unaligned_be16(cdb_length, &cdb[7]); 469 break; 470 case BMIC_SENSE_DIAG_OPTIONS: 471 cdb_length = 0; 472 /* fall through */ 473 case BMIC_IDENTIFY_CONTROLLER: 474 case BMIC_IDENTIFY_PHYSICAL_DEVICE: 475 request->data_direction = SOP_READ_FLAG; 476 cdb[0] = BMIC_READ; 477 cdb[6] = cmd; 478 put_unaligned_be16(cdb_length, &cdb[7]); 479 break; 480 case BMIC_SET_DIAG_OPTIONS: 481 cdb_length = 0; 482 /* fall through */ 483 case BMIC_WRITE_HOST_WELLNESS: 484 request->data_direction = SOP_WRITE_FLAG; 485 cdb[0] = BMIC_WRITE; 486 cdb[6] = cmd; 487 put_unaligned_be16(cdb_length, &cdb[7]); 488 break; 489 case BMIC_CSMI_PASSTHRU: 490 request->data_direction = SOP_BIDIRECTIONAL; 491 cdb[0] = BMIC_WRITE; 492 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU; 493 cdb[6] = cmd; 494 put_unaligned_be16(cdb_length, &cdb[7]); 495 break; 496 default: 497 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n", 498 cmd); 499 break; 500 } 501 502 switch (request->data_direction) { 503 case SOP_READ_FLAG: 504 *dir = DMA_FROM_DEVICE; 505 break; 506 case SOP_WRITE_FLAG: 507 *dir = DMA_TO_DEVICE; 508 break; 509 case SOP_NO_DIRECTION_FLAG: 510 *dir = DMA_NONE; 511 break; 512 default: 513 *dir = DMA_BIDIRECTIONAL; 514 break; 515 } 516 517 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0], 518 buffer, buffer_length, *dir); 519 } 520 521 static inline void pqi_reinit_io_request(struct pqi_io_request *io_request) 522 { 523 io_request->scmd = NULL; 524 io_request->status = 0; 525 io_request->error_info = NULL; 526 io_request->raid_bypass = false; 527 } 528 529 static struct pqi_io_request *pqi_alloc_io_request( 530 struct pqi_ctrl_info *ctrl_info) 531 { 532 struct pqi_io_request *io_request; 533 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */ 534 535 while (1) { 536 io_request = &ctrl_info->io_request_pool[i]; 537 if (atomic_inc_return(&io_request->refcount) == 1) 538 break; 539 atomic_dec(&io_request->refcount); 540 i = (i + 1) % ctrl_info->max_io_slots; 541 } 542 543 /* benignly racy */ 544 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots; 545 546 pqi_reinit_io_request(io_request); 547 548 return io_request; 549 } 550 551 static void pqi_free_io_request(struct pqi_io_request *io_request) 552 { 553 atomic_dec(&io_request->refcount); 554 } 555 556 static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd, 557 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page, 558 struct pqi_raid_error_info *error_info, 559 unsigned long timeout_msecs) 560 { 561 int rc; 562 enum dma_data_direction dir; 563 struct pqi_raid_path_request request; 564 565 rc = pqi_build_raid_path_request(ctrl_info, &request, 566 cmd, scsi3addr, buffer, 567 buffer_length, vpd_page, &dir); 568 if (rc) 569 return rc; 570 571 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 572 0, error_info, timeout_msecs); 573 574 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); 575 return rc; 576 } 577 578 /* Helper functions for pqi_send_scsi_raid_request */ 579 580 static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info, 581 u8 cmd, void *buffer, size_t buffer_length) 582 { 583 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID, 584 buffer, buffer_length, 0, NULL, NO_TIMEOUT); 585 } 586 587 static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info, 588 u8 cmd, void *buffer, size_t buffer_length, 589 struct pqi_raid_error_info *error_info) 590 { 591 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID, 592 buffer, buffer_length, 0, error_info, NO_TIMEOUT); 593 } 594 595 596 static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info, 597 struct bmic_identify_controller *buffer) 598 { 599 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER, 600 buffer, sizeof(*buffer)); 601 } 602 603 static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info, 604 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length) 605 { 606 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr, 607 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT); 608 } 609 610 static bool pqi_vpd_page_supported(struct pqi_ctrl_info *ctrl_info, 611 u8 *scsi3addr, u16 vpd_page) 612 { 613 int rc; 614 int i; 615 int pages; 616 unsigned char *buf, bufsize; 617 618 buf = kzalloc(256, GFP_KERNEL); 619 if (!buf) 620 return false; 621 622 /* Get the size of the page list first */ 623 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr, 624 VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES, 625 buf, SCSI_VPD_HEADER_SZ); 626 if (rc != 0) 627 goto exit_unsupported; 628 629 pages = buf[3]; 630 if ((pages + SCSI_VPD_HEADER_SZ) <= 255) 631 bufsize = pages + SCSI_VPD_HEADER_SZ; 632 else 633 bufsize = 255; 634 635 /* Get the whole VPD page list */ 636 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr, 637 VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES, 638 buf, bufsize); 639 if (rc != 0) 640 goto exit_unsupported; 641 642 pages = buf[3]; 643 for (i = 1; i <= pages; i++) 644 if (buf[3 + i] == vpd_page) 645 goto exit_supported; 646 647 exit_unsupported: 648 kfree(buf); 649 return false; 650 651 exit_supported: 652 kfree(buf); 653 return true; 654 } 655 656 static int pqi_get_device_id(struct pqi_ctrl_info *ctrl_info, 657 u8 *scsi3addr, u8 *device_id, int buflen) 658 { 659 int rc; 660 unsigned char *buf; 661 662 if (!pqi_vpd_page_supported(ctrl_info, scsi3addr, SCSI_VPD_DEVICE_ID)) 663 return 1; /* function not supported */ 664 665 buf = kzalloc(64, GFP_KERNEL); 666 if (!buf) 667 return -ENOMEM; 668 669 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr, 670 VPD_PAGE | SCSI_VPD_DEVICE_ID, 671 buf, 64); 672 if (rc == 0) { 673 if (buflen > 16) 674 buflen = 16; 675 memcpy(device_id, &buf[SCSI_VPD_DEVICE_ID_IDX], buflen); 676 } 677 678 kfree(buf); 679 680 return rc; 681 } 682 683 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info, 684 struct pqi_scsi_dev *device, 685 struct bmic_identify_physical_device *buffer, 686 size_t buffer_length) 687 { 688 int rc; 689 enum dma_data_direction dir; 690 u16 bmic_device_index; 691 struct pqi_raid_path_request request; 692 693 rc = pqi_build_raid_path_request(ctrl_info, &request, 694 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer, 695 buffer_length, 0, &dir); 696 if (rc) 697 return rc; 698 699 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr); 700 request.cdb[2] = (u8)bmic_device_index; 701 request.cdb[9] = (u8)(bmic_device_index >> 8); 702 703 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 704 0, NULL, NO_TIMEOUT); 705 706 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir); 707 return rc; 708 } 709 710 static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info, 711 enum bmic_flush_cache_shutdown_event shutdown_event) 712 { 713 int rc; 714 struct bmic_flush_cache *flush_cache; 715 716 /* 717 * Don't bother trying to flush the cache if the controller is 718 * locked up. 719 */ 720 if (pqi_ctrl_offline(ctrl_info)) 721 return -ENXIO; 722 723 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL); 724 if (!flush_cache) 725 return -ENOMEM; 726 727 flush_cache->shutdown_event = shutdown_event; 728 729 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache, 730 sizeof(*flush_cache)); 731 732 kfree(flush_cache); 733 734 return rc; 735 } 736 737 int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info, 738 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length, 739 struct pqi_raid_error_info *error_info) 740 { 741 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU, 742 buffer, buffer_length, error_info); 743 } 744 745 #define PQI_FETCH_PTRAID_DATA (1UL<<31) 746 747 static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info) 748 { 749 int rc; 750 struct bmic_diag_options *diag; 751 752 diag = kzalloc(sizeof(*diag), GFP_KERNEL); 753 if (!diag) 754 return -ENOMEM; 755 756 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS, 757 diag, sizeof(*diag)); 758 if (rc) 759 goto out; 760 761 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA); 762 763 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS, 764 diag, sizeof(*diag)); 765 out: 766 kfree(diag); 767 768 return rc; 769 } 770 771 static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info, 772 void *buffer, size_t buffer_length) 773 { 774 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS, 775 buffer, buffer_length); 776 } 777 778 #pragma pack(1) 779 780 struct bmic_host_wellness_driver_version { 781 u8 start_tag[4]; 782 u8 driver_version_tag[2]; 783 __le16 driver_version_length; 784 char driver_version[32]; 785 u8 dont_write_tag[2]; 786 u8 end_tag[2]; 787 }; 788 789 #pragma pack() 790 791 static int pqi_write_driver_version_to_host_wellness( 792 struct pqi_ctrl_info *ctrl_info) 793 { 794 int rc; 795 struct bmic_host_wellness_driver_version *buffer; 796 size_t buffer_length; 797 798 buffer_length = sizeof(*buffer); 799 800 buffer = kmalloc(buffer_length, GFP_KERNEL); 801 if (!buffer) 802 return -ENOMEM; 803 804 buffer->start_tag[0] = '<'; 805 buffer->start_tag[1] = 'H'; 806 buffer->start_tag[2] = 'W'; 807 buffer->start_tag[3] = '>'; 808 buffer->driver_version_tag[0] = 'D'; 809 buffer->driver_version_tag[1] = 'V'; 810 put_unaligned_le16(sizeof(buffer->driver_version), 811 &buffer->driver_version_length); 812 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION, 813 sizeof(buffer->driver_version) - 1); 814 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0'; 815 buffer->dont_write_tag[0] = 'D'; 816 buffer->dont_write_tag[1] = 'W'; 817 buffer->end_tag[0] = 'Z'; 818 buffer->end_tag[1] = 'Z'; 819 820 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length); 821 822 kfree(buffer); 823 824 return rc; 825 } 826 827 #pragma pack(1) 828 829 struct bmic_host_wellness_time { 830 u8 start_tag[4]; 831 u8 time_tag[2]; 832 __le16 time_length; 833 u8 time[8]; 834 u8 dont_write_tag[2]; 835 u8 end_tag[2]; 836 }; 837 838 #pragma pack() 839 840 static int pqi_write_current_time_to_host_wellness( 841 struct pqi_ctrl_info *ctrl_info) 842 { 843 int rc; 844 struct bmic_host_wellness_time *buffer; 845 size_t buffer_length; 846 time64_t local_time; 847 unsigned int year; 848 struct tm tm; 849 850 buffer_length = sizeof(*buffer); 851 852 buffer = kmalloc(buffer_length, GFP_KERNEL); 853 if (!buffer) 854 return -ENOMEM; 855 856 buffer->start_tag[0] = '<'; 857 buffer->start_tag[1] = 'H'; 858 buffer->start_tag[2] = 'W'; 859 buffer->start_tag[3] = '>'; 860 buffer->time_tag[0] = 'T'; 861 buffer->time_tag[1] = 'D'; 862 put_unaligned_le16(sizeof(buffer->time), 863 &buffer->time_length); 864 865 local_time = ktime_get_real_seconds(); 866 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm); 867 year = tm.tm_year + 1900; 868 869 buffer->time[0] = bin2bcd(tm.tm_hour); 870 buffer->time[1] = bin2bcd(tm.tm_min); 871 buffer->time[2] = bin2bcd(tm.tm_sec); 872 buffer->time[3] = 0; 873 buffer->time[4] = bin2bcd(tm.tm_mon + 1); 874 buffer->time[5] = bin2bcd(tm.tm_mday); 875 buffer->time[6] = bin2bcd(year / 100); 876 buffer->time[7] = bin2bcd(year % 100); 877 878 buffer->dont_write_tag[0] = 'D'; 879 buffer->dont_write_tag[1] = 'W'; 880 buffer->end_tag[0] = 'Z'; 881 buffer->end_tag[1] = 'Z'; 882 883 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length); 884 885 kfree(buffer); 886 887 return rc; 888 } 889 890 #define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ) 891 892 static void pqi_update_time_worker(struct work_struct *work) 893 { 894 int rc; 895 struct pqi_ctrl_info *ctrl_info; 896 897 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, 898 update_time_work); 899 900 if (pqi_ctrl_offline(ctrl_info)) 901 return; 902 903 rc = pqi_write_current_time_to_host_wellness(ctrl_info); 904 if (rc) 905 dev_warn(&ctrl_info->pci_dev->dev, 906 "error updating time on controller\n"); 907 908 schedule_delayed_work(&ctrl_info->update_time_work, 909 PQI_UPDATE_TIME_WORK_INTERVAL); 910 } 911 912 static inline void pqi_schedule_update_time_worker( 913 struct pqi_ctrl_info *ctrl_info) 914 { 915 schedule_delayed_work(&ctrl_info->update_time_work, 0); 916 } 917 918 static inline void pqi_cancel_update_time_worker( 919 struct pqi_ctrl_info *ctrl_info) 920 { 921 cancel_delayed_work_sync(&ctrl_info->update_time_work); 922 } 923 924 static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, 925 void *buffer, size_t buffer_length) 926 { 927 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer, 928 buffer_length); 929 } 930 931 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, 932 void **buffer) 933 { 934 int rc; 935 size_t lun_list_length; 936 size_t lun_data_length; 937 size_t new_lun_list_length; 938 void *lun_data = NULL; 939 struct report_lun_header *report_lun_header; 940 941 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL); 942 if (!report_lun_header) { 943 rc = -ENOMEM; 944 goto out; 945 } 946 947 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header, 948 sizeof(*report_lun_header)); 949 if (rc) 950 goto out; 951 952 lun_list_length = get_unaligned_be32(&report_lun_header->list_length); 953 954 again: 955 lun_data_length = sizeof(struct report_lun_header) + lun_list_length; 956 957 lun_data = kmalloc(lun_data_length, GFP_KERNEL); 958 if (!lun_data) { 959 rc = -ENOMEM; 960 goto out; 961 } 962 963 if (lun_list_length == 0) { 964 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header)); 965 goto out; 966 } 967 968 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length); 969 if (rc) 970 goto out; 971 972 new_lun_list_length = get_unaligned_be32( 973 &((struct report_lun_header *)lun_data)->list_length); 974 975 if (new_lun_list_length > lun_list_length) { 976 lun_list_length = new_lun_list_length; 977 kfree(lun_data); 978 goto again; 979 } 980 981 out: 982 kfree(report_lun_header); 983 984 if (rc) { 985 kfree(lun_data); 986 lun_data = NULL; 987 } 988 989 *buffer = lun_data; 990 991 return rc; 992 } 993 994 static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info, 995 void **buffer) 996 { 997 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS, 998 buffer); 999 } 1000 1001 static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info, 1002 void **buffer) 1003 { 1004 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer); 1005 } 1006 1007 static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info, 1008 struct report_phys_lun_extended **physdev_list, 1009 struct report_log_lun_extended **logdev_list) 1010 { 1011 int rc; 1012 size_t logdev_list_length; 1013 size_t logdev_data_length; 1014 struct report_log_lun_extended *internal_logdev_list; 1015 struct report_log_lun_extended *logdev_data; 1016 struct report_lun_header report_lun_header; 1017 1018 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list); 1019 if (rc) 1020 dev_err(&ctrl_info->pci_dev->dev, 1021 "report physical LUNs failed\n"); 1022 1023 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list); 1024 if (rc) 1025 dev_err(&ctrl_info->pci_dev->dev, 1026 "report logical LUNs failed\n"); 1027 1028 /* 1029 * Tack the controller itself onto the end of the logical device list. 1030 */ 1031 1032 logdev_data = *logdev_list; 1033 1034 if (logdev_data) { 1035 logdev_list_length = 1036 get_unaligned_be32(&logdev_data->header.list_length); 1037 } else { 1038 memset(&report_lun_header, 0, sizeof(report_lun_header)); 1039 logdev_data = 1040 (struct report_log_lun_extended *)&report_lun_header; 1041 logdev_list_length = 0; 1042 } 1043 1044 logdev_data_length = sizeof(struct report_lun_header) + 1045 logdev_list_length; 1046 1047 internal_logdev_list = kmalloc(logdev_data_length + 1048 sizeof(struct report_log_lun_extended), GFP_KERNEL); 1049 if (!internal_logdev_list) { 1050 kfree(*logdev_list); 1051 *logdev_list = NULL; 1052 return -ENOMEM; 1053 } 1054 1055 memcpy(internal_logdev_list, logdev_data, logdev_data_length); 1056 memset((u8 *)internal_logdev_list + logdev_data_length, 0, 1057 sizeof(struct report_log_lun_extended_entry)); 1058 put_unaligned_be32(logdev_list_length + 1059 sizeof(struct report_log_lun_extended_entry), 1060 &internal_logdev_list->header.list_length); 1061 1062 kfree(*logdev_list); 1063 *logdev_list = internal_logdev_list; 1064 1065 return 0; 1066 } 1067 1068 static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device, 1069 int bus, int target, int lun) 1070 { 1071 device->bus = bus; 1072 device->target = target; 1073 device->lun = lun; 1074 } 1075 1076 static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device) 1077 { 1078 u8 *scsi3addr; 1079 u32 lunid; 1080 int bus; 1081 int target; 1082 int lun; 1083 1084 scsi3addr = device->scsi3addr; 1085 lunid = get_unaligned_le32(scsi3addr); 1086 1087 if (pqi_is_hba_lunid(scsi3addr)) { 1088 /* The specified device is the controller. */ 1089 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff); 1090 device->target_lun_valid = true; 1091 return; 1092 } 1093 1094 if (pqi_is_logical_device(device)) { 1095 if (device->is_external_raid_device) { 1096 bus = PQI_EXTERNAL_RAID_VOLUME_BUS; 1097 target = (lunid >> 16) & 0x3fff; 1098 lun = lunid & 0xff; 1099 } else { 1100 bus = PQI_RAID_VOLUME_BUS; 1101 target = 0; 1102 lun = lunid & 0x3fff; 1103 } 1104 pqi_set_bus_target_lun(device, bus, target, lun); 1105 device->target_lun_valid = true; 1106 return; 1107 } 1108 1109 /* 1110 * Defer target and LUN assignment for non-controller physical devices 1111 * because the SAS transport layer will make these assignments later. 1112 */ 1113 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0); 1114 } 1115 1116 static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info, 1117 struct pqi_scsi_dev *device) 1118 { 1119 int rc; 1120 u8 raid_level; 1121 u8 *buffer; 1122 1123 raid_level = SA_RAID_UNKNOWN; 1124 1125 buffer = kmalloc(64, GFP_KERNEL); 1126 if (buffer) { 1127 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1128 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64); 1129 if (rc == 0) { 1130 raid_level = buffer[8]; 1131 if (raid_level > SA_RAID_MAX) 1132 raid_level = SA_RAID_UNKNOWN; 1133 } 1134 kfree(buffer); 1135 } 1136 1137 device->raid_level = raid_level; 1138 } 1139 1140 static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info, 1141 struct pqi_scsi_dev *device, struct raid_map *raid_map) 1142 { 1143 char *err_msg; 1144 u32 raid_map_size; 1145 u32 r5or6_blocks_per_row; 1146 1147 raid_map_size = get_unaligned_le32(&raid_map->structure_size); 1148 1149 if (raid_map_size < offsetof(struct raid_map, disk_data)) { 1150 err_msg = "RAID map too small"; 1151 goto bad_raid_map; 1152 } 1153 1154 if (device->raid_level == SA_RAID_1) { 1155 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) { 1156 err_msg = "invalid RAID-1 map"; 1157 goto bad_raid_map; 1158 } 1159 } else if (device->raid_level == SA_RAID_ADM) { 1160 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) { 1161 err_msg = "invalid RAID-1(ADM) map"; 1162 goto bad_raid_map; 1163 } 1164 } else if ((device->raid_level == SA_RAID_5 || 1165 device->raid_level == SA_RAID_6) && 1166 get_unaligned_le16(&raid_map->layout_map_count) > 1) { 1167 /* RAID 50/60 */ 1168 r5or6_blocks_per_row = 1169 get_unaligned_le16(&raid_map->strip_size) * 1170 get_unaligned_le16(&raid_map->data_disks_per_row); 1171 if (r5or6_blocks_per_row == 0) { 1172 err_msg = "invalid RAID-5 or RAID-6 map"; 1173 goto bad_raid_map; 1174 } 1175 } 1176 1177 return 0; 1178 1179 bad_raid_map: 1180 dev_warn(&ctrl_info->pci_dev->dev, 1181 "logical device %08x%08x %s\n", 1182 *((u32 *)&device->scsi3addr), 1183 *((u32 *)&device->scsi3addr[4]), err_msg); 1184 1185 return -EINVAL; 1186 } 1187 1188 static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info, 1189 struct pqi_scsi_dev *device) 1190 { 1191 int rc; 1192 u32 raid_map_size; 1193 struct raid_map *raid_map; 1194 1195 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL); 1196 if (!raid_map) 1197 return -ENOMEM; 1198 1199 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, 1200 device->scsi3addr, raid_map, sizeof(*raid_map), 1201 0, NULL, NO_TIMEOUT); 1202 1203 if (rc) 1204 goto error; 1205 1206 raid_map_size = get_unaligned_le32(&raid_map->structure_size); 1207 1208 if (raid_map_size > sizeof(*raid_map)) { 1209 1210 kfree(raid_map); 1211 1212 raid_map = kmalloc(raid_map_size, GFP_KERNEL); 1213 if (!raid_map) 1214 return -ENOMEM; 1215 1216 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP, 1217 device->scsi3addr, raid_map, raid_map_size, 1218 0, NULL, NO_TIMEOUT); 1219 if (rc) 1220 goto error; 1221 1222 if (get_unaligned_le32(&raid_map->structure_size) 1223 != raid_map_size) { 1224 dev_warn(&ctrl_info->pci_dev->dev, 1225 "Requested %d bytes, received %d bytes", 1226 raid_map_size, 1227 get_unaligned_le32(&raid_map->structure_size)); 1228 goto error; 1229 } 1230 } 1231 1232 rc = pqi_validate_raid_map(ctrl_info, device, raid_map); 1233 if (rc) 1234 goto error; 1235 1236 device->raid_map = raid_map; 1237 1238 return 0; 1239 1240 error: 1241 kfree(raid_map); 1242 1243 return rc; 1244 } 1245 1246 static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info, 1247 struct pqi_scsi_dev *device) 1248 { 1249 int rc; 1250 u8 *buffer; 1251 u8 bypass_status; 1252 1253 buffer = kmalloc(64, GFP_KERNEL); 1254 if (!buffer) 1255 return; 1256 1257 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1258 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64); 1259 if (rc) 1260 goto out; 1261 1262 #define RAID_BYPASS_STATUS 4 1263 #define RAID_BYPASS_CONFIGURED 0x1 1264 #define RAID_BYPASS_ENABLED 0x2 1265 1266 bypass_status = buffer[RAID_BYPASS_STATUS]; 1267 device->raid_bypass_configured = 1268 (bypass_status & RAID_BYPASS_CONFIGURED) != 0; 1269 if (device->raid_bypass_configured && 1270 (bypass_status & RAID_BYPASS_ENABLED) && 1271 pqi_get_raid_map(ctrl_info, device) == 0) 1272 device->raid_bypass_enabled = true; 1273 1274 out: 1275 kfree(buffer); 1276 } 1277 1278 /* 1279 * Use vendor-specific VPD to determine online/offline status of a volume. 1280 */ 1281 1282 static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info, 1283 struct pqi_scsi_dev *device) 1284 { 1285 int rc; 1286 size_t page_length; 1287 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE; 1288 bool volume_offline = true; 1289 u32 volume_flags; 1290 struct ciss_vpd_logical_volume_status *vpd; 1291 1292 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL); 1293 if (!vpd) 1294 goto no_buffer; 1295 1296 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 1297 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd)); 1298 if (rc) 1299 goto out; 1300 1301 if (vpd->page_code != CISS_VPD_LV_STATUS) 1302 goto out; 1303 1304 page_length = offsetof(struct ciss_vpd_logical_volume_status, 1305 volume_status) + vpd->page_length; 1306 if (page_length < sizeof(*vpd)) 1307 goto out; 1308 1309 volume_status = vpd->volume_status; 1310 volume_flags = get_unaligned_be32(&vpd->flags); 1311 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0; 1312 1313 out: 1314 kfree(vpd); 1315 no_buffer: 1316 device->volume_status = volume_status; 1317 device->volume_offline = volume_offline; 1318 } 1319 1320 #define PQI_INQUIRY_PAGE0_RETRIES 3 1321 1322 static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info, 1323 struct pqi_scsi_dev *device) 1324 { 1325 int rc; 1326 u8 *buffer; 1327 unsigned int retries; 1328 1329 if (device->is_expander_smp_device) 1330 return 0; 1331 1332 buffer = kmalloc(64, GFP_KERNEL); 1333 if (!buffer) 1334 return -ENOMEM; 1335 1336 /* Send an inquiry to the device to see what it is. */ 1337 for (retries = 0;;) { 1338 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, 1339 buffer, 64); 1340 if (rc == 0) 1341 break; 1342 if (pqi_is_logical_device(device) || 1343 rc != PQI_CMD_STATUS_ABORTED || 1344 ++retries > PQI_INQUIRY_PAGE0_RETRIES) 1345 goto out; 1346 } 1347 1348 scsi_sanitize_inquiry_string(&buffer[8], 8); 1349 scsi_sanitize_inquiry_string(&buffer[16], 16); 1350 1351 device->devtype = buffer[0] & 0x1f; 1352 memcpy(device->vendor, &buffer[8], sizeof(device->vendor)); 1353 memcpy(device->model, &buffer[16], sizeof(device->model)); 1354 1355 if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK) { 1356 if (device->is_external_raid_device) { 1357 device->raid_level = SA_RAID_UNKNOWN; 1358 device->volume_status = CISS_LV_OK; 1359 device->volume_offline = false; 1360 } else { 1361 pqi_get_raid_level(ctrl_info, device); 1362 pqi_get_raid_bypass_status(ctrl_info, device); 1363 pqi_get_volume_status(ctrl_info, device); 1364 } 1365 } 1366 1367 if (pqi_get_device_id(ctrl_info, device->scsi3addr, 1368 device->unique_id, sizeof(device->unique_id)) < 0) 1369 dev_warn(&ctrl_info->pci_dev->dev, 1370 "Can't get device id for scsi %d:%d:%d:%d\n", 1371 ctrl_info->scsi_host->host_no, 1372 device->bus, device->target, 1373 device->lun); 1374 1375 out: 1376 kfree(buffer); 1377 1378 return rc; 1379 } 1380 1381 static void pqi_get_physical_disk_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 memset(id_phys, 0, sizeof(*id_phys)); 1388 1389 rc = pqi_identify_physical_device(ctrl_info, device, 1390 id_phys, sizeof(*id_phys)); 1391 if (rc) { 1392 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH; 1393 return; 1394 } 1395 1396 device->queue_depth = 1397 get_unaligned_le16(&id_phys->current_queue_depth_limit); 1398 device->device_type = id_phys->device_type; 1399 device->active_path_index = id_phys->active_path_number; 1400 device->path_map = id_phys->redundant_path_present_map; 1401 memcpy(&device->box, 1402 &id_phys->alternate_paths_phys_box_on_port, 1403 sizeof(device->box)); 1404 memcpy(&device->phys_connector, 1405 &id_phys->alternate_paths_phys_connector, 1406 sizeof(device->phys_connector)); 1407 device->bay = id_phys->phys_bay_in_box; 1408 } 1409 1410 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info, 1411 struct pqi_scsi_dev *device) 1412 { 1413 char *status; 1414 static const char unknown_state_str[] = 1415 "Volume is in an unknown state (%u)"; 1416 char unknown_state_buffer[sizeof(unknown_state_str) + 10]; 1417 1418 switch (device->volume_status) { 1419 case CISS_LV_OK: 1420 status = "Volume online"; 1421 break; 1422 case CISS_LV_FAILED: 1423 status = "Volume failed"; 1424 break; 1425 case CISS_LV_NOT_CONFIGURED: 1426 status = "Volume not configured"; 1427 break; 1428 case CISS_LV_DEGRADED: 1429 status = "Volume degraded"; 1430 break; 1431 case CISS_LV_READY_FOR_RECOVERY: 1432 status = "Volume ready for recovery operation"; 1433 break; 1434 case CISS_LV_UNDERGOING_RECOVERY: 1435 status = "Volume undergoing recovery"; 1436 break; 1437 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED: 1438 status = "Wrong physical drive was replaced"; 1439 break; 1440 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM: 1441 status = "A physical drive not properly connected"; 1442 break; 1443 case CISS_LV_HARDWARE_OVERHEATING: 1444 status = "Hardware is overheating"; 1445 break; 1446 case CISS_LV_HARDWARE_HAS_OVERHEATED: 1447 status = "Hardware has overheated"; 1448 break; 1449 case CISS_LV_UNDERGOING_EXPANSION: 1450 status = "Volume undergoing expansion"; 1451 break; 1452 case CISS_LV_NOT_AVAILABLE: 1453 status = "Volume waiting for transforming volume"; 1454 break; 1455 case CISS_LV_QUEUED_FOR_EXPANSION: 1456 status = "Volume queued for expansion"; 1457 break; 1458 case CISS_LV_DISABLED_SCSI_ID_CONFLICT: 1459 status = "Volume disabled due to SCSI ID conflict"; 1460 break; 1461 case CISS_LV_EJECTED: 1462 status = "Volume has been ejected"; 1463 break; 1464 case CISS_LV_UNDERGOING_ERASE: 1465 status = "Volume undergoing background erase"; 1466 break; 1467 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD: 1468 status = "Volume ready for predictive spare rebuild"; 1469 break; 1470 case CISS_LV_UNDERGOING_RPI: 1471 status = "Volume undergoing rapid parity initialization"; 1472 break; 1473 case CISS_LV_PENDING_RPI: 1474 status = "Volume queued for rapid parity initialization"; 1475 break; 1476 case CISS_LV_ENCRYPTED_NO_KEY: 1477 status = "Encrypted volume inaccessible - key not present"; 1478 break; 1479 case CISS_LV_UNDERGOING_ENCRYPTION: 1480 status = "Volume undergoing encryption process"; 1481 break; 1482 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING: 1483 status = "Volume undergoing encryption re-keying process"; 1484 break; 1485 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER: 1486 status = "Volume encrypted but encryption is disabled"; 1487 break; 1488 case CISS_LV_PENDING_ENCRYPTION: 1489 status = "Volume pending migration to encrypted state"; 1490 break; 1491 case CISS_LV_PENDING_ENCRYPTION_REKEYING: 1492 status = "Volume pending encryption rekeying"; 1493 break; 1494 case CISS_LV_NOT_SUPPORTED: 1495 status = "Volume not supported on this controller"; 1496 break; 1497 case CISS_LV_STATUS_UNAVAILABLE: 1498 status = "Volume status not available"; 1499 break; 1500 default: 1501 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer), 1502 unknown_state_str, device->volume_status); 1503 status = unknown_state_buffer; 1504 break; 1505 } 1506 1507 dev_info(&ctrl_info->pci_dev->dev, 1508 "scsi %d:%d:%d:%d %s\n", 1509 ctrl_info->scsi_host->host_no, 1510 device->bus, device->target, device->lun, status); 1511 } 1512 1513 static void pqi_rescan_worker(struct work_struct *work) 1514 { 1515 struct pqi_ctrl_info *ctrl_info; 1516 1517 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info, 1518 rescan_work); 1519 1520 pqi_scan_scsi_devices(ctrl_info); 1521 } 1522 1523 static int pqi_add_device(struct pqi_ctrl_info *ctrl_info, 1524 struct pqi_scsi_dev *device) 1525 { 1526 int rc; 1527 1528 if (pqi_is_logical_device(device)) 1529 rc = scsi_add_device(ctrl_info->scsi_host, device->bus, 1530 device->target, device->lun); 1531 else 1532 rc = pqi_add_sas_device(ctrl_info->sas_host, device); 1533 1534 return rc; 1535 } 1536 1537 #define PQI_PENDING_IO_TIMEOUT_SECS 20 1538 1539 static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, 1540 struct pqi_scsi_dev *device) 1541 { 1542 int rc; 1543 1544 pqi_device_remove_start(device); 1545 1546 rc = pqi_device_wait_for_pending_io(ctrl_info, device, 1547 PQI_PENDING_IO_TIMEOUT_SECS); 1548 if (rc) 1549 dev_err(&ctrl_info->pci_dev->dev, 1550 "scsi %d:%d:%d:%d removing device with %d outstanding commands\n", 1551 ctrl_info->scsi_host->host_no, device->bus, 1552 device->target, device->lun, 1553 atomic_read(&device->scsi_cmds_outstanding)); 1554 1555 if (pqi_is_logical_device(device)) 1556 scsi_remove_device(device->sdev); 1557 else 1558 pqi_remove_sas_device(device); 1559 } 1560 1561 /* Assumes the SCSI device list lock is held. */ 1562 1563 static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info, 1564 int bus, int target, int lun) 1565 { 1566 struct pqi_scsi_dev *device; 1567 1568 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1569 scsi_device_list_entry) 1570 if (device->bus == bus && device->target == target && 1571 device->lun == lun) 1572 return device; 1573 1574 return NULL; 1575 } 1576 1577 static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1, 1578 struct pqi_scsi_dev *dev2) 1579 { 1580 if (dev1->is_physical_device != dev2->is_physical_device) 1581 return false; 1582 1583 if (dev1->is_physical_device) 1584 return dev1->wwid == dev2->wwid; 1585 1586 return memcmp(dev1->volume_id, dev2->volume_id, 1587 sizeof(dev1->volume_id)) == 0; 1588 } 1589 1590 enum pqi_find_result { 1591 DEVICE_NOT_FOUND, 1592 DEVICE_CHANGED, 1593 DEVICE_SAME, 1594 }; 1595 1596 static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info, 1597 struct pqi_scsi_dev *device_to_find, 1598 struct pqi_scsi_dev **matching_device) 1599 { 1600 struct pqi_scsi_dev *device; 1601 1602 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1603 scsi_device_list_entry) { 1604 if (pqi_scsi3addr_equal(device_to_find->scsi3addr, 1605 device->scsi3addr)) { 1606 *matching_device = device; 1607 if (pqi_device_equal(device_to_find, device)) { 1608 if (device_to_find->volume_offline) 1609 return DEVICE_CHANGED; 1610 return DEVICE_SAME; 1611 } 1612 return DEVICE_CHANGED; 1613 } 1614 } 1615 1616 return DEVICE_NOT_FOUND; 1617 } 1618 1619 static inline const char *pqi_device_type(struct pqi_scsi_dev *device) 1620 { 1621 if (device->is_expander_smp_device) 1622 return "Enclosure SMP "; 1623 1624 return scsi_device_type(device->devtype); 1625 } 1626 1627 #define PQI_DEV_INFO_BUFFER_LENGTH 128 1628 1629 static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info, 1630 char *action, struct pqi_scsi_dev *device) 1631 { 1632 ssize_t count; 1633 char buffer[PQI_DEV_INFO_BUFFER_LENGTH]; 1634 1635 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH, 1636 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus); 1637 1638 if (device->target_lun_valid) 1639 count += snprintf(buffer + count, 1640 PQI_DEV_INFO_BUFFER_LENGTH - count, 1641 "%d:%d", 1642 device->target, 1643 device->lun); 1644 else 1645 count += snprintf(buffer + count, 1646 PQI_DEV_INFO_BUFFER_LENGTH - count, 1647 "-:-"); 1648 1649 if (pqi_is_logical_device(device)) 1650 count += snprintf(buffer + count, 1651 PQI_DEV_INFO_BUFFER_LENGTH - count, 1652 " %08x%08x", 1653 *((u32 *)&device->scsi3addr), 1654 *((u32 *)&device->scsi3addr[4])); 1655 else 1656 count += snprintf(buffer + count, 1657 PQI_DEV_INFO_BUFFER_LENGTH - count, 1658 " %016llx", device->sas_address); 1659 1660 count += snprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count, 1661 " %s %.8s %.16s ", 1662 pqi_device_type(device), 1663 device->vendor, 1664 device->model); 1665 1666 if (pqi_is_logical_device(device)) { 1667 if (device->devtype == TYPE_DISK) 1668 count += snprintf(buffer + count, 1669 PQI_DEV_INFO_BUFFER_LENGTH - count, 1670 "SSDSmartPathCap%c En%c %-12s", 1671 device->raid_bypass_configured ? '+' : '-', 1672 device->raid_bypass_enabled ? '+' : '-', 1673 pqi_raid_level_to_string(device->raid_level)); 1674 } else { 1675 count += snprintf(buffer + count, 1676 PQI_DEV_INFO_BUFFER_LENGTH - count, 1677 "AIO%c", device->aio_enabled ? '+' : '-'); 1678 if (device->devtype == TYPE_DISK || 1679 device->devtype == TYPE_ZBC) 1680 count += snprintf(buffer + count, 1681 PQI_DEV_INFO_BUFFER_LENGTH - count, 1682 " qd=%-6d", device->queue_depth); 1683 } 1684 1685 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer); 1686 } 1687 1688 /* Assumes the SCSI device list lock is held. */ 1689 1690 static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device, 1691 struct pqi_scsi_dev *new_device) 1692 { 1693 existing_device->devtype = new_device->devtype; 1694 existing_device->device_type = new_device->device_type; 1695 existing_device->bus = new_device->bus; 1696 if (new_device->target_lun_valid) { 1697 existing_device->target = new_device->target; 1698 existing_device->lun = new_device->lun; 1699 existing_device->target_lun_valid = true; 1700 } 1701 1702 /* By definition, the scsi3addr and wwid fields are already the same. */ 1703 1704 existing_device->is_physical_device = new_device->is_physical_device; 1705 existing_device->is_external_raid_device = 1706 new_device->is_external_raid_device; 1707 existing_device->is_expander_smp_device = 1708 new_device->is_expander_smp_device; 1709 existing_device->aio_enabled = new_device->aio_enabled; 1710 memcpy(existing_device->vendor, new_device->vendor, 1711 sizeof(existing_device->vendor)); 1712 memcpy(existing_device->model, new_device->model, 1713 sizeof(existing_device->model)); 1714 existing_device->sas_address = new_device->sas_address; 1715 existing_device->raid_level = new_device->raid_level; 1716 existing_device->queue_depth = new_device->queue_depth; 1717 existing_device->aio_handle = new_device->aio_handle; 1718 existing_device->volume_status = new_device->volume_status; 1719 existing_device->active_path_index = new_device->active_path_index; 1720 existing_device->path_map = new_device->path_map; 1721 existing_device->bay = new_device->bay; 1722 memcpy(existing_device->box, new_device->box, 1723 sizeof(existing_device->box)); 1724 memcpy(existing_device->phys_connector, new_device->phys_connector, 1725 sizeof(existing_device->phys_connector)); 1726 existing_device->offload_to_mirror = 0; 1727 kfree(existing_device->raid_map); 1728 existing_device->raid_map = new_device->raid_map; 1729 existing_device->raid_bypass_configured = 1730 new_device->raid_bypass_configured; 1731 existing_device->raid_bypass_enabled = 1732 new_device->raid_bypass_enabled; 1733 existing_device->device_offline = false; 1734 1735 /* To prevent this from being freed later. */ 1736 new_device->raid_map = NULL; 1737 } 1738 1739 static inline void pqi_free_device(struct pqi_scsi_dev *device) 1740 { 1741 if (device) { 1742 kfree(device->raid_map); 1743 kfree(device); 1744 } 1745 } 1746 1747 /* 1748 * Called when exposing a new device to the OS fails in order to re-adjust 1749 * our internal SCSI device list to match the SCSI ML's view. 1750 */ 1751 1752 static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info, 1753 struct pqi_scsi_dev *device) 1754 { 1755 unsigned long flags; 1756 1757 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1758 list_del(&device->scsi_device_list_entry); 1759 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 1760 1761 /* Allow the device structure to be freed later. */ 1762 device->keep_device = false; 1763 } 1764 1765 static inline bool pqi_is_device_added(struct pqi_scsi_dev *device) 1766 { 1767 if (device->is_expander_smp_device) 1768 return device->sas_port != NULL; 1769 1770 return device->sdev != NULL; 1771 } 1772 1773 static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info, 1774 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices) 1775 { 1776 int rc; 1777 unsigned int i; 1778 unsigned long flags; 1779 enum pqi_find_result find_result; 1780 struct pqi_scsi_dev *device; 1781 struct pqi_scsi_dev *next; 1782 struct pqi_scsi_dev *matching_device; 1783 LIST_HEAD(add_list); 1784 LIST_HEAD(delete_list); 1785 1786 /* 1787 * The idea here is to do as little work as possible while holding the 1788 * spinlock. That's why we go to great pains to defer anything other 1789 * than updating the internal device list until after we release the 1790 * spinlock. 1791 */ 1792 1793 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 1794 1795 /* Assume that all devices in the existing list have gone away. */ 1796 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1797 scsi_device_list_entry) 1798 device->device_gone = true; 1799 1800 for (i = 0; i < num_new_devices; i++) { 1801 device = new_device_list[i]; 1802 1803 find_result = pqi_scsi_find_entry(ctrl_info, device, 1804 &matching_device); 1805 1806 switch (find_result) { 1807 case DEVICE_SAME: 1808 /* 1809 * The newly found device is already in the existing 1810 * device list. 1811 */ 1812 device->new_device = false; 1813 matching_device->device_gone = false; 1814 pqi_scsi_update_device(matching_device, device); 1815 break; 1816 case DEVICE_NOT_FOUND: 1817 /* 1818 * The newly found device is NOT in the existing device 1819 * list. 1820 */ 1821 device->new_device = true; 1822 break; 1823 case DEVICE_CHANGED: 1824 /* 1825 * The original device has gone away and we need to add 1826 * the new device. 1827 */ 1828 device->new_device = true; 1829 break; 1830 } 1831 } 1832 1833 /* Process all devices that have gone away. */ 1834 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list, 1835 scsi_device_list_entry) { 1836 if (device->device_gone) { 1837 list_del(&device->scsi_device_list_entry); 1838 list_add_tail(&device->delete_list_entry, &delete_list); 1839 } 1840 } 1841 1842 /* Process all new devices. */ 1843 for (i = 0; i < num_new_devices; i++) { 1844 device = new_device_list[i]; 1845 if (!device->new_device) 1846 continue; 1847 if (device->volume_offline) 1848 continue; 1849 list_add_tail(&device->scsi_device_list_entry, 1850 &ctrl_info->scsi_device_list); 1851 list_add_tail(&device->add_list_entry, &add_list); 1852 /* To prevent this device structure from being freed later. */ 1853 device->keep_device = true; 1854 } 1855 1856 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 1857 1858 if (pqi_ctrl_in_ofa(ctrl_info)) 1859 pqi_ctrl_ofa_done(ctrl_info); 1860 1861 /* Remove all devices that have gone away. */ 1862 list_for_each_entry_safe(device, next, &delete_list, 1863 delete_list_entry) { 1864 if (device->volume_offline) { 1865 pqi_dev_info(ctrl_info, "offline", device); 1866 pqi_show_volume_status(ctrl_info, device); 1867 } else { 1868 pqi_dev_info(ctrl_info, "removed", device); 1869 } 1870 if (pqi_is_device_added(device)) 1871 pqi_remove_device(ctrl_info, device); 1872 list_del(&device->delete_list_entry); 1873 pqi_free_device(device); 1874 } 1875 1876 /* 1877 * Notify the SCSI ML if the queue depth of any existing device has 1878 * changed. 1879 */ 1880 list_for_each_entry(device, &ctrl_info->scsi_device_list, 1881 scsi_device_list_entry) { 1882 if (device->sdev && device->queue_depth != 1883 device->advertised_queue_depth) { 1884 device->advertised_queue_depth = device->queue_depth; 1885 scsi_change_queue_depth(device->sdev, 1886 device->advertised_queue_depth); 1887 } 1888 } 1889 1890 /* Expose any new devices. */ 1891 list_for_each_entry_safe(device, next, &add_list, add_list_entry) { 1892 if (!pqi_is_device_added(device)) { 1893 pqi_dev_info(ctrl_info, "added", device); 1894 rc = pqi_add_device(ctrl_info, device); 1895 if (rc) { 1896 dev_warn(&ctrl_info->pci_dev->dev, 1897 "scsi %d:%d:%d:%d addition failed, device not added\n", 1898 ctrl_info->scsi_host->host_no, 1899 device->bus, device->target, 1900 device->lun); 1901 pqi_fixup_botched_add(ctrl_info, device); 1902 } 1903 } 1904 } 1905 } 1906 1907 static bool pqi_is_supported_device(struct pqi_scsi_dev *device) 1908 { 1909 bool is_supported; 1910 1911 if (device->is_expander_smp_device) 1912 return true; 1913 1914 is_supported = false; 1915 1916 switch (device->devtype) { 1917 case TYPE_DISK: 1918 case TYPE_ZBC: 1919 case TYPE_TAPE: 1920 case TYPE_MEDIUM_CHANGER: 1921 case TYPE_ENCLOSURE: 1922 is_supported = true; 1923 break; 1924 case TYPE_RAID: 1925 /* 1926 * Only support the HBA controller itself as a RAID 1927 * controller. If it's a RAID controller other than 1928 * the HBA itself (an external RAID controller, for 1929 * example), we don't support it. 1930 */ 1931 if (pqi_is_hba_lunid(device->scsi3addr)) 1932 is_supported = true; 1933 break; 1934 } 1935 1936 return is_supported; 1937 } 1938 1939 static inline bool pqi_skip_device(u8 *scsi3addr) 1940 { 1941 /* Ignore all masked devices. */ 1942 if (MASKED_DEVICE(scsi3addr)) 1943 return true; 1944 1945 return false; 1946 } 1947 1948 static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device) 1949 { 1950 if (!device->is_physical_device) 1951 return false; 1952 1953 if (device->is_expander_smp_device) 1954 return true; 1955 1956 switch (device->devtype) { 1957 case TYPE_DISK: 1958 case TYPE_ZBC: 1959 case TYPE_ENCLOSURE: 1960 return true; 1961 } 1962 1963 return false; 1964 } 1965 1966 static inline bool pqi_expose_device(struct pqi_scsi_dev *device) 1967 { 1968 return !device->is_physical_device || 1969 !pqi_skip_device(device->scsi3addr); 1970 } 1971 1972 static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info) 1973 { 1974 int i; 1975 int rc; 1976 LIST_HEAD(new_device_list_head); 1977 struct report_phys_lun_extended *physdev_list = NULL; 1978 struct report_log_lun_extended *logdev_list = NULL; 1979 struct report_phys_lun_extended_entry *phys_lun_ext_entry; 1980 struct report_log_lun_extended_entry *log_lun_ext_entry; 1981 struct bmic_identify_physical_device *id_phys = NULL; 1982 u32 num_physicals; 1983 u32 num_logicals; 1984 struct pqi_scsi_dev **new_device_list = NULL; 1985 struct pqi_scsi_dev *device; 1986 struct pqi_scsi_dev *next; 1987 unsigned int num_new_devices; 1988 unsigned int num_valid_devices; 1989 bool is_physical_device; 1990 u8 *scsi3addr; 1991 static char *out_of_memory_msg = 1992 "failed to allocate memory, device discovery stopped"; 1993 1994 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list); 1995 if (rc) 1996 goto out; 1997 1998 if (physdev_list) 1999 num_physicals = 2000 get_unaligned_be32(&physdev_list->header.list_length) 2001 / sizeof(physdev_list->lun_entries[0]); 2002 else 2003 num_physicals = 0; 2004 2005 if (logdev_list) 2006 num_logicals = 2007 get_unaligned_be32(&logdev_list->header.list_length) 2008 / sizeof(logdev_list->lun_entries[0]); 2009 else 2010 num_logicals = 0; 2011 2012 if (num_physicals) { 2013 /* 2014 * We need this buffer for calls to pqi_get_physical_disk_info() 2015 * below. We allocate it here instead of inside 2016 * pqi_get_physical_disk_info() because it's a fairly large 2017 * buffer. 2018 */ 2019 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL); 2020 if (!id_phys) { 2021 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2022 out_of_memory_msg); 2023 rc = -ENOMEM; 2024 goto out; 2025 } 2026 } 2027 2028 num_new_devices = num_physicals + num_logicals; 2029 2030 new_device_list = kmalloc_array(num_new_devices, 2031 sizeof(*new_device_list), 2032 GFP_KERNEL); 2033 if (!new_device_list) { 2034 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg); 2035 rc = -ENOMEM; 2036 goto out; 2037 } 2038 2039 for (i = 0; i < num_new_devices; i++) { 2040 device = kzalloc(sizeof(*device), GFP_KERNEL); 2041 if (!device) { 2042 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2043 out_of_memory_msg); 2044 rc = -ENOMEM; 2045 goto out; 2046 } 2047 list_add_tail(&device->new_device_list_entry, 2048 &new_device_list_head); 2049 } 2050 2051 device = NULL; 2052 num_valid_devices = 0; 2053 2054 for (i = 0; i < num_new_devices; i++) { 2055 2056 if (i < num_physicals) { 2057 is_physical_device = true; 2058 phys_lun_ext_entry = &physdev_list->lun_entries[i]; 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[i - num_physicals]; 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 if (phys_lun_ext_entry->device_type == 2082 SA_EXPANDER_SMP_DEVICE) 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 /* Gather information about the device. */ 2090 rc = pqi_get_device_info(ctrl_info, device); 2091 if (rc == -ENOMEM) { 2092 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", 2093 out_of_memory_msg); 2094 goto out; 2095 } 2096 if (rc) { 2097 if (device->is_physical_device) 2098 dev_warn(&ctrl_info->pci_dev->dev, 2099 "obtaining device info failed, skipping physical device %016llx\n", 2100 get_unaligned_be64( 2101 &phys_lun_ext_entry->wwid)); 2102 else 2103 dev_warn(&ctrl_info->pci_dev->dev, 2104 "obtaining device info failed, skipping logical device %08x%08x\n", 2105 *((u32 *)&device->scsi3addr), 2106 *((u32 *)&device->scsi3addr[4])); 2107 rc = 0; 2108 continue; 2109 } 2110 2111 if (!pqi_is_supported_device(device)) 2112 continue; 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 REPORT_PHYS_LUN_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 if (device->devtype == TYPE_DISK || 2126 device->devtype == TYPE_ZBC) { 2127 pqi_get_physical_disk_info(ctrl_info, 2128 device, id_phys); 2129 } 2130 } else { 2131 memcpy(device->volume_id, log_lun_ext_entry->volume_id, 2132 sizeof(device->volume_id)); 2133 } 2134 2135 if (pqi_is_device_with_sas_address(device)) 2136 device->sas_address = get_unaligned_be64(&device->wwid); 2137 2138 new_device_list[num_valid_devices++] = device; 2139 } 2140 2141 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices); 2142 2143 out: 2144 list_for_each_entry_safe(device, next, &new_device_list_head, 2145 new_device_list_entry) { 2146 if (device->keep_device) 2147 continue; 2148 list_del(&device->new_device_list_entry); 2149 pqi_free_device(device); 2150 } 2151 2152 kfree(new_device_list); 2153 kfree(physdev_list); 2154 kfree(logdev_list); 2155 kfree(id_phys); 2156 2157 return rc; 2158 } 2159 2160 static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info) 2161 { 2162 unsigned long flags; 2163 struct pqi_scsi_dev *device; 2164 2165 while (1) { 2166 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 2167 2168 device = list_first_entry_or_null(&ctrl_info->scsi_device_list, 2169 struct pqi_scsi_dev, scsi_device_list_entry); 2170 if (device) 2171 list_del(&device->scsi_device_list_entry); 2172 2173 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 2174 flags); 2175 2176 if (!device) 2177 break; 2178 2179 if (pqi_is_device_added(device)) 2180 pqi_remove_device(ctrl_info, device); 2181 pqi_free_device(device); 2182 } 2183 } 2184 2185 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info) 2186 { 2187 int rc; 2188 2189 if (pqi_ctrl_offline(ctrl_info)) 2190 return -ENXIO; 2191 2192 mutex_lock(&ctrl_info->scan_mutex); 2193 2194 rc = pqi_update_scsi_devices(ctrl_info); 2195 if (rc) 2196 pqi_schedule_rescan_worker_delayed(ctrl_info); 2197 2198 mutex_unlock(&ctrl_info->scan_mutex); 2199 2200 return rc; 2201 } 2202 2203 static void pqi_scan_start(struct Scsi_Host *shost) 2204 { 2205 struct pqi_ctrl_info *ctrl_info; 2206 2207 ctrl_info = shost_to_hba(shost); 2208 if (pqi_ctrl_in_ofa(ctrl_info)) 2209 return; 2210 2211 pqi_scan_scsi_devices(ctrl_info); 2212 } 2213 2214 /* Returns TRUE if scan is finished. */ 2215 2216 static int pqi_scan_finished(struct Scsi_Host *shost, 2217 unsigned long elapsed_time) 2218 { 2219 struct pqi_ctrl_info *ctrl_info; 2220 2221 ctrl_info = shost_priv(shost); 2222 2223 return !mutex_is_locked(&ctrl_info->scan_mutex); 2224 } 2225 2226 static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info) 2227 { 2228 mutex_lock(&ctrl_info->scan_mutex); 2229 mutex_unlock(&ctrl_info->scan_mutex); 2230 } 2231 2232 static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info) 2233 { 2234 mutex_lock(&ctrl_info->lun_reset_mutex); 2235 mutex_unlock(&ctrl_info->lun_reset_mutex); 2236 } 2237 2238 static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info) 2239 { 2240 mutex_lock(&ctrl_info->ofa_mutex); 2241 mutex_unlock(&ctrl_info->ofa_mutex); 2242 } 2243 2244 static inline void pqi_set_encryption_info( 2245 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map, 2246 u64 first_block) 2247 { 2248 u32 volume_blk_size; 2249 2250 /* 2251 * Set the encryption tweak values based on logical block address. 2252 * If the block size is 512, the tweak value is equal to the LBA. 2253 * For other block sizes, tweak value is (LBA * block size) / 512. 2254 */ 2255 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size); 2256 if (volume_blk_size != 512) 2257 first_block = (first_block * volume_blk_size) / 512; 2258 2259 encryption_info->data_encryption_key_index = 2260 get_unaligned_le16(&raid_map->data_encryption_key_index); 2261 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block); 2262 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block); 2263 } 2264 2265 /* 2266 * Attempt to perform RAID bypass mapping for a logical volume I/O. 2267 */ 2268 2269 #define PQI_RAID_BYPASS_INELIGIBLE 1 2270 2271 static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 2272 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 2273 struct pqi_queue_group *queue_group) 2274 { 2275 struct raid_map *raid_map; 2276 bool is_write = false; 2277 u32 map_index; 2278 u64 first_block; 2279 u64 last_block; 2280 u32 block_cnt; 2281 u32 blocks_per_row; 2282 u64 first_row; 2283 u64 last_row; 2284 u32 first_row_offset; 2285 u32 last_row_offset; 2286 u32 first_column; 2287 u32 last_column; 2288 u64 r0_first_row; 2289 u64 r0_last_row; 2290 u32 r5or6_blocks_per_row; 2291 u64 r5or6_first_row; 2292 u64 r5or6_last_row; 2293 u32 r5or6_first_row_offset; 2294 u32 r5or6_last_row_offset; 2295 u32 r5or6_first_column; 2296 u32 r5or6_last_column; 2297 u16 data_disks_per_row; 2298 u32 total_disks_per_row; 2299 u16 layout_map_count; 2300 u32 stripesize; 2301 u16 strip_size; 2302 u32 first_group; 2303 u32 last_group; 2304 u32 current_group; 2305 u32 map_row; 2306 u32 aio_handle; 2307 u64 disk_block; 2308 u32 disk_block_cnt; 2309 u8 cdb[16]; 2310 u8 cdb_length; 2311 int offload_to_mirror; 2312 struct pqi_encryption_info *encryption_info_ptr; 2313 struct pqi_encryption_info encryption_info; 2314 #if BITS_PER_LONG == 32 2315 u64 tmpdiv; 2316 #endif 2317 2318 /* Check for valid opcode, get LBA and block count. */ 2319 switch (scmd->cmnd[0]) { 2320 case WRITE_6: 2321 is_write = true; 2322 /* fall through */ 2323 case READ_6: 2324 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) | 2325 (scmd->cmnd[2] << 8) | scmd->cmnd[3]); 2326 block_cnt = (u32)scmd->cmnd[4]; 2327 if (block_cnt == 0) 2328 block_cnt = 256; 2329 break; 2330 case WRITE_10: 2331 is_write = true; 2332 /* fall through */ 2333 case READ_10: 2334 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]); 2335 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]); 2336 break; 2337 case WRITE_12: 2338 is_write = true; 2339 /* fall through */ 2340 case READ_12: 2341 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]); 2342 block_cnt = get_unaligned_be32(&scmd->cmnd[6]); 2343 break; 2344 case WRITE_16: 2345 is_write = true; 2346 /* fall through */ 2347 case READ_16: 2348 first_block = get_unaligned_be64(&scmd->cmnd[2]); 2349 block_cnt = get_unaligned_be32(&scmd->cmnd[10]); 2350 break; 2351 default: 2352 /* Process via normal I/O path. */ 2353 return PQI_RAID_BYPASS_INELIGIBLE; 2354 } 2355 2356 /* Check for write to non-RAID-0. */ 2357 if (is_write && device->raid_level != SA_RAID_0) 2358 return PQI_RAID_BYPASS_INELIGIBLE; 2359 2360 if (unlikely(block_cnt == 0)) 2361 return PQI_RAID_BYPASS_INELIGIBLE; 2362 2363 last_block = first_block + block_cnt - 1; 2364 raid_map = device->raid_map; 2365 2366 /* Check for invalid block or wraparound. */ 2367 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) || 2368 last_block < first_block) 2369 return PQI_RAID_BYPASS_INELIGIBLE; 2370 2371 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row); 2372 strip_size = get_unaligned_le16(&raid_map->strip_size); 2373 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count); 2374 2375 /* Calculate stripe information for the request. */ 2376 blocks_per_row = data_disks_per_row * strip_size; 2377 #if BITS_PER_LONG == 32 2378 tmpdiv = first_block; 2379 do_div(tmpdiv, blocks_per_row); 2380 first_row = tmpdiv; 2381 tmpdiv = last_block; 2382 do_div(tmpdiv, blocks_per_row); 2383 last_row = tmpdiv; 2384 first_row_offset = (u32)(first_block - (first_row * blocks_per_row)); 2385 last_row_offset = (u32)(last_block - (last_row * blocks_per_row)); 2386 tmpdiv = first_row_offset; 2387 do_div(tmpdiv, strip_size); 2388 first_column = tmpdiv; 2389 tmpdiv = last_row_offset; 2390 do_div(tmpdiv, strip_size); 2391 last_column = tmpdiv; 2392 #else 2393 first_row = first_block / blocks_per_row; 2394 last_row = last_block / blocks_per_row; 2395 first_row_offset = (u32)(first_block - (first_row * blocks_per_row)); 2396 last_row_offset = (u32)(last_block - (last_row * blocks_per_row)); 2397 first_column = first_row_offset / strip_size; 2398 last_column = last_row_offset / strip_size; 2399 #endif 2400 2401 /* If this isn't a single row/column then give to the controller. */ 2402 if (first_row != last_row || first_column != last_column) 2403 return PQI_RAID_BYPASS_INELIGIBLE; 2404 2405 /* Proceeding with driver mapping. */ 2406 total_disks_per_row = data_disks_per_row + 2407 get_unaligned_le16(&raid_map->metadata_disks_per_row); 2408 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) % 2409 get_unaligned_le16(&raid_map->row_cnt); 2410 map_index = (map_row * total_disks_per_row) + first_column; 2411 2412 /* RAID 1 */ 2413 if (device->raid_level == SA_RAID_1) { 2414 if (device->offload_to_mirror) 2415 map_index += data_disks_per_row; 2416 device->offload_to_mirror = !device->offload_to_mirror; 2417 } else if (device->raid_level == SA_RAID_ADM) { 2418 /* RAID ADM */ 2419 /* 2420 * Handles N-way mirrors (R1-ADM) and R10 with # of drives 2421 * divisible by 3. 2422 */ 2423 offload_to_mirror = device->offload_to_mirror; 2424 if (offload_to_mirror == 0) { 2425 /* use physical disk in the first mirrored group. */ 2426 map_index %= data_disks_per_row; 2427 } else { 2428 do { 2429 /* 2430 * Determine mirror group that map_index 2431 * indicates. 2432 */ 2433 current_group = map_index / data_disks_per_row; 2434 2435 if (offload_to_mirror != current_group) { 2436 if (current_group < 2437 layout_map_count - 1) { 2438 /* 2439 * Select raid index from 2440 * next group. 2441 */ 2442 map_index += data_disks_per_row; 2443 current_group++; 2444 } else { 2445 /* 2446 * Select raid index from first 2447 * group. 2448 */ 2449 map_index %= data_disks_per_row; 2450 current_group = 0; 2451 } 2452 } 2453 } while (offload_to_mirror != current_group); 2454 } 2455 2456 /* Set mirror group to use next time. */ 2457 offload_to_mirror = 2458 (offload_to_mirror >= layout_map_count - 1) ? 2459 0 : offload_to_mirror + 1; 2460 WARN_ON(offload_to_mirror >= layout_map_count); 2461 device->offload_to_mirror = offload_to_mirror; 2462 /* 2463 * Avoid direct use of device->offload_to_mirror within this 2464 * function since multiple threads might simultaneously 2465 * increment it beyond the range of device->layout_map_count -1. 2466 */ 2467 } else if ((device->raid_level == SA_RAID_5 || 2468 device->raid_level == SA_RAID_6) && layout_map_count > 1) { 2469 /* RAID 50/60 */ 2470 /* Verify first and last block are in same RAID group */ 2471 r5or6_blocks_per_row = strip_size * data_disks_per_row; 2472 stripesize = r5or6_blocks_per_row * layout_map_count; 2473 #if BITS_PER_LONG == 32 2474 tmpdiv = first_block; 2475 first_group = do_div(tmpdiv, stripesize); 2476 tmpdiv = first_group; 2477 do_div(tmpdiv, r5or6_blocks_per_row); 2478 first_group = tmpdiv; 2479 tmpdiv = last_block; 2480 last_group = do_div(tmpdiv, stripesize); 2481 tmpdiv = last_group; 2482 do_div(tmpdiv, r5or6_blocks_per_row); 2483 last_group = tmpdiv; 2484 #else 2485 first_group = (first_block % stripesize) / r5or6_blocks_per_row; 2486 last_group = (last_block % stripesize) / r5or6_blocks_per_row; 2487 #endif 2488 if (first_group != last_group) 2489 return PQI_RAID_BYPASS_INELIGIBLE; 2490 2491 /* Verify request is in a single row of RAID 5/6 */ 2492 #if BITS_PER_LONG == 32 2493 tmpdiv = first_block; 2494 do_div(tmpdiv, stripesize); 2495 first_row = r5or6_first_row = r0_first_row = tmpdiv; 2496 tmpdiv = last_block; 2497 do_div(tmpdiv, stripesize); 2498 r5or6_last_row = r0_last_row = tmpdiv; 2499 #else 2500 first_row = r5or6_first_row = r0_first_row = 2501 first_block / stripesize; 2502 r5or6_last_row = r0_last_row = last_block / stripesize; 2503 #endif 2504 if (r5or6_first_row != r5or6_last_row) 2505 return PQI_RAID_BYPASS_INELIGIBLE; 2506 2507 /* Verify request is in a single column */ 2508 #if BITS_PER_LONG == 32 2509 tmpdiv = first_block; 2510 first_row_offset = do_div(tmpdiv, stripesize); 2511 tmpdiv = first_row_offset; 2512 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row); 2513 r5or6_first_row_offset = first_row_offset; 2514 tmpdiv = last_block; 2515 r5or6_last_row_offset = do_div(tmpdiv, stripesize); 2516 tmpdiv = r5or6_last_row_offset; 2517 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row); 2518 tmpdiv = r5or6_first_row_offset; 2519 do_div(tmpdiv, strip_size); 2520 first_column = r5or6_first_column = tmpdiv; 2521 tmpdiv = r5or6_last_row_offset; 2522 do_div(tmpdiv, strip_size); 2523 r5or6_last_column = tmpdiv; 2524 #else 2525 first_row_offset = r5or6_first_row_offset = 2526 (u32)((first_block % stripesize) % 2527 r5or6_blocks_per_row); 2528 2529 r5or6_last_row_offset = 2530 (u32)((last_block % stripesize) % 2531 r5or6_blocks_per_row); 2532 2533 first_column = r5or6_first_row_offset / strip_size; 2534 r5or6_first_column = first_column; 2535 r5or6_last_column = r5or6_last_row_offset / strip_size; 2536 #endif 2537 if (r5or6_first_column != r5or6_last_column) 2538 return PQI_RAID_BYPASS_INELIGIBLE; 2539 2540 /* Request is eligible */ 2541 map_row = 2542 ((u32)(first_row >> raid_map->parity_rotation_shift)) % 2543 get_unaligned_le16(&raid_map->row_cnt); 2544 2545 map_index = (first_group * 2546 (get_unaligned_le16(&raid_map->row_cnt) * 2547 total_disks_per_row)) + 2548 (map_row * total_disks_per_row) + first_column; 2549 } 2550 2551 aio_handle = raid_map->disk_data[map_index].aio_handle; 2552 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) + 2553 first_row * strip_size + 2554 (first_row_offset - first_column * strip_size); 2555 disk_block_cnt = block_cnt; 2556 2557 /* Handle differing logical/physical block sizes. */ 2558 if (raid_map->phys_blk_shift) { 2559 disk_block <<= raid_map->phys_blk_shift; 2560 disk_block_cnt <<= raid_map->phys_blk_shift; 2561 } 2562 2563 if (unlikely(disk_block_cnt > 0xffff)) 2564 return PQI_RAID_BYPASS_INELIGIBLE; 2565 2566 /* Build the new CDB for the physical disk I/O. */ 2567 if (disk_block > 0xffffffff) { 2568 cdb[0] = is_write ? WRITE_16 : READ_16; 2569 cdb[1] = 0; 2570 put_unaligned_be64(disk_block, &cdb[2]); 2571 put_unaligned_be32(disk_block_cnt, &cdb[10]); 2572 cdb[14] = 0; 2573 cdb[15] = 0; 2574 cdb_length = 16; 2575 } else { 2576 cdb[0] = is_write ? WRITE_10 : READ_10; 2577 cdb[1] = 0; 2578 put_unaligned_be32((u32)disk_block, &cdb[2]); 2579 cdb[6] = 0; 2580 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]); 2581 cdb[9] = 0; 2582 cdb_length = 10; 2583 } 2584 2585 if (get_unaligned_le16(&raid_map->flags) & 2586 RAID_MAP_ENCRYPTION_ENABLED) { 2587 pqi_set_encryption_info(&encryption_info, raid_map, 2588 first_block); 2589 encryption_info_ptr = &encryption_info; 2590 } else { 2591 encryption_info_ptr = NULL; 2592 } 2593 2594 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle, 2595 cdb, cdb_length, queue_group, encryption_info_ptr, true); 2596 } 2597 2598 #define PQI_STATUS_IDLE 0x0 2599 2600 #define PQI_CREATE_ADMIN_QUEUE_PAIR 1 2601 #define PQI_DELETE_ADMIN_QUEUE_PAIR 2 2602 2603 #define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0 2604 #define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1 2605 #define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2 2606 #define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3 2607 #define PQI_DEVICE_STATE_ERROR 0x4 2608 2609 #define PQI_MODE_READY_TIMEOUT_SECS 30 2610 #define PQI_MODE_READY_POLL_INTERVAL_MSECS 1 2611 2612 static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info) 2613 { 2614 struct pqi_device_registers __iomem *pqi_registers; 2615 unsigned long timeout; 2616 u64 signature; 2617 u8 status; 2618 2619 pqi_registers = ctrl_info->pqi_registers; 2620 timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies; 2621 2622 while (1) { 2623 signature = readq(&pqi_registers->signature); 2624 if (memcmp(&signature, PQI_DEVICE_SIGNATURE, 2625 sizeof(signature)) == 0) 2626 break; 2627 if (time_after(jiffies, timeout)) { 2628 dev_err(&ctrl_info->pci_dev->dev, 2629 "timed out waiting for PQI signature\n"); 2630 return -ETIMEDOUT; 2631 } 2632 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2633 } 2634 2635 while (1) { 2636 status = readb(&pqi_registers->function_and_status_code); 2637 if (status == PQI_STATUS_IDLE) 2638 break; 2639 if (time_after(jiffies, timeout)) { 2640 dev_err(&ctrl_info->pci_dev->dev, 2641 "timed out waiting for PQI IDLE\n"); 2642 return -ETIMEDOUT; 2643 } 2644 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2645 } 2646 2647 while (1) { 2648 if (readl(&pqi_registers->device_status) == 2649 PQI_DEVICE_STATE_ALL_REGISTERS_READY) 2650 break; 2651 if (time_after(jiffies, timeout)) { 2652 dev_err(&ctrl_info->pci_dev->dev, 2653 "timed out waiting for PQI all registers ready\n"); 2654 return -ETIMEDOUT; 2655 } 2656 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS); 2657 } 2658 2659 return 0; 2660 } 2661 2662 static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request) 2663 { 2664 struct pqi_scsi_dev *device; 2665 2666 device = io_request->scmd->device->hostdata; 2667 device->raid_bypass_enabled = false; 2668 device->aio_enabled = false; 2669 } 2670 2671 static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path) 2672 { 2673 struct pqi_ctrl_info *ctrl_info; 2674 struct pqi_scsi_dev *device; 2675 2676 device = sdev->hostdata; 2677 if (device->device_offline) 2678 return; 2679 2680 device->device_offline = true; 2681 ctrl_info = shost_to_hba(sdev->host); 2682 pqi_schedule_rescan_worker(ctrl_info); 2683 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n", 2684 path, ctrl_info->scsi_host->host_no, device->bus, 2685 device->target, device->lun); 2686 } 2687 2688 static void pqi_process_raid_io_error(struct pqi_io_request *io_request) 2689 { 2690 u8 scsi_status; 2691 u8 host_byte; 2692 struct scsi_cmnd *scmd; 2693 struct pqi_raid_error_info *error_info; 2694 size_t sense_data_length; 2695 int residual_count; 2696 int xfer_count; 2697 struct scsi_sense_hdr sshdr; 2698 2699 scmd = io_request->scmd; 2700 if (!scmd) 2701 return; 2702 2703 error_info = io_request->error_info; 2704 scsi_status = error_info->status; 2705 host_byte = DID_OK; 2706 2707 switch (error_info->data_out_result) { 2708 case PQI_DATA_IN_OUT_GOOD: 2709 break; 2710 case PQI_DATA_IN_OUT_UNDERFLOW: 2711 xfer_count = 2712 get_unaligned_le32(&error_info->data_out_transferred); 2713 residual_count = scsi_bufflen(scmd) - xfer_count; 2714 scsi_set_resid(scmd, residual_count); 2715 if (xfer_count < scmd->underflow) 2716 host_byte = DID_SOFT_ERROR; 2717 break; 2718 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 2719 case PQI_DATA_IN_OUT_ABORTED: 2720 host_byte = DID_ABORT; 2721 break; 2722 case PQI_DATA_IN_OUT_TIMEOUT: 2723 host_byte = DID_TIME_OUT; 2724 break; 2725 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 2726 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 2727 case PQI_DATA_IN_OUT_BUFFER_ERROR: 2728 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 2729 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 2730 case PQI_DATA_IN_OUT_ERROR: 2731 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 2732 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 2733 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 2734 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 2735 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 2736 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 2737 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 2738 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 2739 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 2740 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 2741 default: 2742 host_byte = DID_ERROR; 2743 break; 2744 } 2745 2746 sense_data_length = get_unaligned_le16(&error_info->sense_data_length); 2747 if (sense_data_length == 0) 2748 sense_data_length = 2749 get_unaligned_le16(&error_info->response_data_length); 2750 if (sense_data_length) { 2751 if (sense_data_length > sizeof(error_info->data)) 2752 sense_data_length = sizeof(error_info->data); 2753 2754 if (scsi_status == SAM_STAT_CHECK_CONDITION && 2755 scsi_normalize_sense(error_info->data, 2756 sense_data_length, &sshdr) && 2757 sshdr.sense_key == HARDWARE_ERROR && 2758 sshdr.asc == 0x3e) { 2759 struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host); 2760 struct pqi_scsi_dev *device = scmd->device->hostdata; 2761 2762 switch (sshdr.ascq) { 2763 case 0x1: /* LOGICAL UNIT FAILURE */ 2764 if (printk_ratelimit()) 2765 scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n", 2766 ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun); 2767 pqi_take_device_offline(scmd->device, "RAID"); 2768 host_byte = DID_NO_CONNECT; 2769 break; 2770 2771 default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */ 2772 if (printk_ratelimit()) 2773 scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n", 2774 sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun); 2775 break; 2776 } 2777 } 2778 2779 if (sense_data_length > SCSI_SENSE_BUFFERSIZE) 2780 sense_data_length = SCSI_SENSE_BUFFERSIZE; 2781 memcpy(scmd->sense_buffer, error_info->data, 2782 sense_data_length); 2783 } 2784 2785 scmd->result = scsi_status; 2786 set_host_byte(scmd, host_byte); 2787 } 2788 2789 static void pqi_process_aio_io_error(struct pqi_io_request *io_request) 2790 { 2791 u8 scsi_status; 2792 u8 host_byte; 2793 struct scsi_cmnd *scmd; 2794 struct pqi_aio_error_info *error_info; 2795 size_t sense_data_length; 2796 int residual_count; 2797 int xfer_count; 2798 bool device_offline; 2799 2800 scmd = io_request->scmd; 2801 error_info = io_request->error_info; 2802 host_byte = DID_OK; 2803 sense_data_length = 0; 2804 device_offline = false; 2805 2806 switch (error_info->service_response) { 2807 case PQI_AIO_SERV_RESPONSE_COMPLETE: 2808 scsi_status = error_info->status; 2809 break; 2810 case PQI_AIO_SERV_RESPONSE_FAILURE: 2811 switch (error_info->status) { 2812 case PQI_AIO_STATUS_IO_ABORTED: 2813 scsi_status = SAM_STAT_TASK_ABORTED; 2814 break; 2815 case PQI_AIO_STATUS_UNDERRUN: 2816 scsi_status = SAM_STAT_GOOD; 2817 residual_count = get_unaligned_le32( 2818 &error_info->residual_count); 2819 scsi_set_resid(scmd, residual_count); 2820 xfer_count = scsi_bufflen(scmd) - residual_count; 2821 if (xfer_count < scmd->underflow) 2822 host_byte = DID_SOFT_ERROR; 2823 break; 2824 case PQI_AIO_STATUS_OVERRUN: 2825 scsi_status = SAM_STAT_GOOD; 2826 break; 2827 case PQI_AIO_STATUS_AIO_PATH_DISABLED: 2828 pqi_aio_path_disabled(io_request); 2829 scsi_status = SAM_STAT_GOOD; 2830 io_request->status = -EAGAIN; 2831 break; 2832 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE: 2833 case PQI_AIO_STATUS_INVALID_DEVICE: 2834 if (!io_request->raid_bypass) { 2835 device_offline = true; 2836 pqi_take_device_offline(scmd->device, "AIO"); 2837 host_byte = DID_NO_CONNECT; 2838 } 2839 scsi_status = SAM_STAT_CHECK_CONDITION; 2840 break; 2841 case PQI_AIO_STATUS_IO_ERROR: 2842 default: 2843 scsi_status = SAM_STAT_CHECK_CONDITION; 2844 break; 2845 } 2846 break; 2847 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE: 2848 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED: 2849 scsi_status = SAM_STAT_GOOD; 2850 break; 2851 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED: 2852 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN: 2853 default: 2854 scsi_status = SAM_STAT_CHECK_CONDITION; 2855 break; 2856 } 2857 2858 if (error_info->data_present) { 2859 sense_data_length = 2860 get_unaligned_le16(&error_info->data_length); 2861 if (sense_data_length) { 2862 if (sense_data_length > sizeof(error_info->data)) 2863 sense_data_length = sizeof(error_info->data); 2864 if (sense_data_length > SCSI_SENSE_BUFFERSIZE) 2865 sense_data_length = SCSI_SENSE_BUFFERSIZE; 2866 memcpy(scmd->sense_buffer, error_info->data, 2867 sense_data_length); 2868 } 2869 } 2870 2871 if (device_offline && sense_data_length == 0) 2872 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR, 2873 0x3e, 0x1); 2874 2875 scmd->result = scsi_status; 2876 set_host_byte(scmd, host_byte); 2877 } 2878 2879 static void pqi_process_io_error(unsigned int iu_type, 2880 struct pqi_io_request *io_request) 2881 { 2882 switch (iu_type) { 2883 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR: 2884 pqi_process_raid_io_error(io_request); 2885 break; 2886 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR: 2887 pqi_process_aio_io_error(io_request); 2888 break; 2889 } 2890 } 2891 2892 static int pqi_interpret_task_management_response( 2893 struct pqi_task_management_response *response) 2894 { 2895 int rc; 2896 2897 switch (response->response_code) { 2898 case SOP_TMF_COMPLETE: 2899 case SOP_TMF_FUNCTION_SUCCEEDED: 2900 rc = 0; 2901 break; 2902 case SOP_TMF_REJECTED: 2903 rc = -EAGAIN; 2904 break; 2905 default: 2906 rc = -EIO; 2907 break; 2908 } 2909 2910 return rc; 2911 } 2912 2913 static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info, 2914 struct pqi_queue_group *queue_group) 2915 { 2916 unsigned int num_responses; 2917 pqi_index_t oq_pi; 2918 pqi_index_t oq_ci; 2919 struct pqi_io_request *io_request; 2920 struct pqi_io_response *response; 2921 u16 request_id; 2922 2923 num_responses = 0; 2924 oq_ci = queue_group->oq_ci_copy; 2925 2926 while (1) { 2927 oq_pi = readl(queue_group->oq_pi); 2928 if (oq_pi == oq_ci) 2929 break; 2930 2931 num_responses++; 2932 response = queue_group->oq_element_array + 2933 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 2934 2935 request_id = get_unaligned_le16(&response->request_id); 2936 WARN_ON(request_id >= ctrl_info->max_io_slots); 2937 2938 io_request = &ctrl_info->io_request_pool[request_id]; 2939 WARN_ON(atomic_read(&io_request->refcount) == 0); 2940 2941 switch (response->header.iu_type) { 2942 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS: 2943 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS: 2944 if (io_request->scmd) 2945 io_request->scmd->result = 0; 2946 /* fall through */ 2947 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT: 2948 break; 2949 case PQI_RESPONSE_IU_VENDOR_GENERAL: 2950 io_request->status = 2951 get_unaligned_le16( 2952 &((struct pqi_vendor_general_response *) 2953 response)->status); 2954 break; 2955 case PQI_RESPONSE_IU_TASK_MANAGEMENT: 2956 io_request->status = 2957 pqi_interpret_task_management_response( 2958 (void *)response); 2959 break; 2960 case PQI_RESPONSE_IU_AIO_PATH_DISABLED: 2961 pqi_aio_path_disabled(io_request); 2962 io_request->status = -EAGAIN; 2963 break; 2964 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR: 2965 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR: 2966 io_request->error_info = ctrl_info->error_buffer + 2967 (get_unaligned_le16(&response->error_index) * 2968 PQI_ERROR_BUFFER_ELEMENT_LENGTH); 2969 pqi_process_io_error(response->header.iu_type, 2970 io_request); 2971 break; 2972 default: 2973 dev_err(&ctrl_info->pci_dev->dev, 2974 "unexpected IU type: 0x%x\n", 2975 response->header.iu_type); 2976 break; 2977 } 2978 2979 io_request->io_complete_callback(io_request, 2980 io_request->context); 2981 2982 /* 2983 * Note that the I/O request structure CANNOT BE TOUCHED after 2984 * returning from the I/O completion callback! 2985 */ 2986 2987 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq; 2988 } 2989 2990 if (num_responses) { 2991 queue_group->oq_ci_copy = oq_ci; 2992 writel(oq_ci, queue_group->oq_ci); 2993 } 2994 2995 return num_responses; 2996 } 2997 2998 static inline unsigned int pqi_num_elements_free(unsigned int pi, 2999 unsigned int ci, unsigned int elements_in_queue) 3000 { 3001 unsigned int num_elements_used; 3002 3003 if (pi >= ci) 3004 num_elements_used = pi - ci; 3005 else 3006 num_elements_used = elements_in_queue - ci + pi; 3007 3008 return elements_in_queue - num_elements_used - 1; 3009 } 3010 3011 static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info, 3012 struct pqi_event_acknowledge_request *iu, size_t iu_length) 3013 { 3014 pqi_index_t iq_pi; 3015 pqi_index_t iq_ci; 3016 unsigned long flags; 3017 void *next_element; 3018 struct pqi_queue_group *queue_group; 3019 3020 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP]; 3021 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id); 3022 3023 while (1) { 3024 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags); 3025 3026 iq_pi = queue_group->iq_pi_copy[RAID_PATH]; 3027 iq_ci = readl(queue_group->iq_ci[RAID_PATH]); 3028 3029 if (pqi_num_elements_free(iq_pi, iq_ci, 3030 ctrl_info->num_elements_per_iq)) 3031 break; 3032 3033 spin_unlock_irqrestore( 3034 &queue_group->submit_lock[RAID_PATH], flags); 3035 3036 if (pqi_ctrl_offline(ctrl_info)) 3037 return; 3038 } 3039 3040 next_element = queue_group->iq_element_array[RAID_PATH] + 3041 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3042 3043 memcpy(next_element, iu, iu_length); 3044 3045 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq; 3046 queue_group->iq_pi_copy[RAID_PATH] = iq_pi; 3047 3048 /* 3049 * This write notifies the controller that an IU is available to be 3050 * processed. 3051 */ 3052 writel(iq_pi, queue_group->iq_pi[RAID_PATH]); 3053 3054 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags); 3055 } 3056 3057 static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info, 3058 struct pqi_event *event) 3059 { 3060 struct pqi_event_acknowledge_request request; 3061 3062 memset(&request, 0, sizeof(request)); 3063 3064 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT; 3065 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 3066 &request.header.iu_length); 3067 request.event_type = event->event_type; 3068 request.event_id = event->event_id; 3069 request.additional_event_id = event->additional_event_id; 3070 3071 pqi_send_event_ack(ctrl_info, &request, sizeof(request)); 3072 } 3073 3074 #define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30 3075 #define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1 3076 3077 static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status( 3078 struct pqi_ctrl_info *ctrl_info) 3079 { 3080 unsigned long timeout; 3081 u8 status; 3082 3083 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies; 3084 3085 while (1) { 3086 status = pqi_read_soft_reset_status(ctrl_info); 3087 if (status & PQI_SOFT_RESET_INITIATE) 3088 return RESET_INITIATE_DRIVER; 3089 3090 if (status & PQI_SOFT_RESET_ABORT) 3091 return RESET_ABORT; 3092 3093 if (time_after(jiffies, timeout)) { 3094 dev_err(&ctrl_info->pci_dev->dev, 3095 "timed out waiting for soft reset status\n"); 3096 return RESET_TIMEDOUT; 3097 } 3098 3099 if (!sis_is_firmware_running(ctrl_info)) 3100 return RESET_NORESPONSE; 3101 3102 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS); 3103 } 3104 } 3105 3106 static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info, 3107 enum pqi_soft_reset_status reset_status) 3108 { 3109 int rc; 3110 3111 switch (reset_status) { 3112 case RESET_INITIATE_DRIVER: 3113 /* fall through */ 3114 case RESET_TIMEDOUT: 3115 dev_info(&ctrl_info->pci_dev->dev, 3116 "resetting controller %u\n", ctrl_info->ctrl_id); 3117 sis_soft_reset(ctrl_info); 3118 /* fall through */ 3119 case RESET_INITIATE_FIRMWARE: 3120 rc = pqi_ofa_ctrl_restart(ctrl_info); 3121 pqi_ofa_free_host_buffer(ctrl_info); 3122 dev_info(&ctrl_info->pci_dev->dev, 3123 "Online Firmware Activation for controller %u: %s\n", 3124 ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED"); 3125 break; 3126 case RESET_ABORT: 3127 pqi_ofa_ctrl_unquiesce(ctrl_info); 3128 dev_info(&ctrl_info->pci_dev->dev, 3129 "Online Firmware Activation for controller %u: %s\n", 3130 ctrl_info->ctrl_id, "ABORTED"); 3131 break; 3132 case RESET_NORESPONSE: 3133 pqi_ofa_free_host_buffer(ctrl_info); 3134 pqi_take_ctrl_offline(ctrl_info); 3135 break; 3136 } 3137 } 3138 3139 static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info, 3140 struct pqi_event *event) 3141 { 3142 u16 event_id; 3143 enum pqi_soft_reset_status status; 3144 3145 event_id = get_unaligned_le16(&event->event_id); 3146 3147 mutex_lock(&ctrl_info->ofa_mutex); 3148 3149 if (event_id == PQI_EVENT_OFA_QUIESCE) { 3150 dev_info(&ctrl_info->pci_dev->dev, 3151 "Received Online Firmware Activation quiesce event for controller %u\n", 3152 ctrl_info->ctrl_id); 3153 pqi_ofa_ctrl_quiesce(ctrl_info); 3154 pqi_acknowledge_event(ctrl_info, event); 3155 if (ctrl_info->soft_reset_handshake_supported) { 3156 status = pqi_poll_for_soft_reset_status(ctrl_info); 3157 pqi_process_soft_reset(ctrl_info, status); 3158 } else { 3159 pqi_process_soft_reset(ctrl_info, 3160 RESET_INITIATE_FIRMWARE); 3161 } 3162 3163 } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { 3164 pqi_acknowledge_event(ctrl_info, event); 3165 pqi_ofa_setup_host_buffer(ctrl_info, 3166 le32_to_cpu(event->ofa_bytes_requested)); 3167 pqi_ofa_host_memory_update(ctrl_info); 3168 } else if (event_id == PQI_EVENT_OFA_CANCELLED) { 3169 pqi_ofa_free_host_buffer(ctrl_info); 3170 pqi_acknowledge_event(ctrl_info, event); 3171 dev_info(&ctrl_info->pci_dev->dev, 3172 "Online Firmware Activation(%u) cancel reason : %u\n", 3173 ctrl_info->ctrl_id, event->ofa_cancel_reason); 3174 } 3175 3176 mutex_unlock(&ctrl_info->ofa_mutex); 3177 } 3178 3179 static void pqi_event_worker(struct work_struct *work) 3180 { 3181 unsigned int i; 3182 struct pqi_ctrl_info *ctrl_info; 3183 struct pqi_event *event; 3184 3185 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work); 3186 3187 pqi_ctrl_busy(ctrl_info); 3188 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT); 3189 if (pqi_ctrl_offline(ctrl_info)) 3190 goto out; 3191 3192 pqi_schedule_rescan_worker_delayed(ctrl_info); 3193 3194 event = ctrl_info->events; 3195 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) { 3196 if (event->pending) { 3197 event->pending = false; 3198 if (event->event_type == PQI_EVENT_TYPE_OFA) { 3199 pqi_ctrl_unbusy(ctrl_info); 3200 pqi_ofa_process_event(ctrl_info, event); 3201 return; 3202 } 3203 pqi_acknowledge_event(ctrl_info, event); 3204 } 3205 event++; 3206 } 3207 3208 out: 3209 pqi_ctrl_unbusy(ctrl_info); 3210 } 3211 3212 #define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ) 3213 3214 static void pqi_heartbeat_timer_handler(struct timer_list *t) 3215 { 3216 int num_interrupts; 3217 u32 heartbeat_count; 3218 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t, 3219 heartbeat_timer); 3220 3221 pqi_check_ctrl_health(ctrl_info); 3222 if (pqi_ctrl_offline(ctrl_info)) 3223 return; 3224 3225 num_interrupts = atomic_read(&ctrl_info->num_interrupts); 3226 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info); 3227 3228 if (num_interrupts == ctrl_info->previous_num_interrupts) { 3229 if (heartbeat_count == ctrl_info->previous_heartbeat_count) { 3230 dev_err(&ctrl_info->pci_dev->dev, 3231 "no heartbeat detected - last heartbeat count: %u\n", 3232 heartbeat_count); 3233 pqi_take_ctrl_offline(ctrl_info); 3234 return; 3235 } 3236 } else { 3237 ctrl_info->previous_num_interrupts = num_interrupts; 3238 } 3239 3240 ctrl_info->previous_heartbeat_count = heartbeat_count; 3241 mod_timer(&ctrl_info->heartbeat_timer, 3242 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL); 3243 } 3244 3245 static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) 3246 { 3247 if (!ctrl_info->heartbeat_counter) 3248 return; 3249 3250 ctrl_info->previous_num_interrupts = 3251 atomic_read(&ctrl_info->num_interrupts); 3252 ctrl_info->previous_heartbeat_count = 3253 pqi_read_heartbeat_counter(ctrl_info); 3254 3255 ctrl_info->heartbeat_timer.expires = 3256 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL; 3257 add_timer(&ctrl_info->heartbeat_timer); 3258 } 3259 3260 static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info) 3261 { 3262 del_timer_sync(&ctrl_info->heartbeat_timer); 3263 } 3264 3265 static inline int pqi_event_type_to_event_index(unsigned int event_type) 3266 { 3267 int index; 3268 3269 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++) 3270 if (event_type == pqi_supported_event_types[index]) 3271 return index; 3272 3273 return -1; 3274 } 3275 3276 static inline bool pqi_is_supported_event(unsigned int event_type) 3277 { 3278 return pqi_event_type_to_event_index(event_type) != -1; 3279 } 3280 3281 static void pqi_ofa_capture_event_payload(struct pqi_event *event, 3282 struct pqi_event_response *response) 3283 { 3284 u16 event_id; 3285 3286 event_id = get_unaligned_le16(&event->event_id); 3287 3288 if (event->event_type == PQI_EVENT_TYPE_OFA) { 3289 if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { 3290 event->ofa_bytes_requested = 3291 response->data.ofa_memory_allocation.bytes_requested; 3292 } else if (event_id == PQI_EVENT_OFA_CANCELLED) { 3293 event->ofa_cancel_reason = 3294 response->data.ofa_cancelled.reason; 3295 } 3296 } 3297 } 3298 3299 static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info) 3300 { 3301 unsigned int num_events; 3302 pqi_index_t oq_pi; 3303 pqi_index_t oq_ci; 3304 struct pqi_event_queue *event_queue; 3305 struct pqi_event_response *response; 3306 struct pqi_event *event; 3307 int event_index; 3308 3309 event_queue = &ctrl_info->event_queue; 3310 num_events = 0; 3311 oq_ci = event_queue->oq_ci_copy; 3312 3313 while (1) { 3314 oq_pi = readl(event_queue->oq_pi); 3315 if (oq_pi == oq_ci) 3316 break; 3317 3318 num_events++; 3319 response = event_queue->oq_element_array + 3320 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH); 3321 3322 event_index = 3323 pqi_event_type_to_event_index(response->event_type); 3324 3325 if (event_index >= 0) { 3326 if (response->request_acknowlege) { 3327 event = &ctrl_info->events[event_index]; 3328 event->pending = true; 3329 event->event_type = response->event_type; 3330 event->event_id = response->event_id; 3331 event->additional_event_id = 3332 response->additional_event_id; 3333 pqi_ofa_capture_event_payload(event, response); 3334 } 3335 } 3336 3337 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS; 3338 } 3339 3340 if (num_events) { 3341 event_queue->oq_ci_copy = oq_ci; 3342 writel(oq_ci, event_queue->oq_ci); 3343 schedule_work(&ctrl_info->event_work); 3344 } 3345 3346 return num_events; 3347 } 3348 3349 #define PQI_LEGACY_INTX_MASK 0x1 3350 3351 static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, 3352 bool enable_intx) 3353 { 3354 u32 intx_mask; 3355 struct pqi_device_registers __iomem *pqi_registers; 3356 volatile void __iomem *register_addr; 3357 3358 pqi_registers = ctrl_info->pqi_registers; 3359 3360 if (enable_intx) 3361 register_addr = &pqi_registers->legacy_intx_mask_clear; 3362 else 3363 register_addr = &pqi_registers->legacy_intx_mask_set; 3364 3365 intx_mask = readl(register_addr); 3366 intx_mask |= PQI_LEGACY_INTX_MASK; 3367 writel(intx_mask, register_addr); 3368 } 3369 3370 static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info, 3371 enum pqi_irq_mode new_mode) 3372 { 3373 switch (ctrl_info->irq_mode) { 3374 case IRQ_MODE_MSIX: 3375 switch (new_mode) { 3376 case IRQ_MODE_MSIX: 3377 break; 3378 case IRQ_MODE_INTX: 3379 pqi_configure_legacy_intx(ctrl_info, true); 3380 sis_enable_intx(ctrl_info); 3381 break; 3382 case IRQ_MODE_NONE: 3383 break; 3384 } 3385 break; 3386 case IRQ_MODE_INTX: 3387 switch (new_mode) { 3388 case IRQ_MODE_MSIX: 3389 pqi_configure_legacy_intx(ctrl_info, false); 3390 sis_enable_msix(ctrl_info); 3391 break; 3392 case IRQ_MODE_INTX: 3393 break; 3394 case IRQ_MODE_NONE: 3395 pqi_configure_legacy_intx(ctrl_info, false); 3396 break; 3397 } 3398 break; 3399 case IRQ_MODE_NONE: 3400 switch (new_mode) { 3401 case IRQ_MODE_MSIX: 3402 sis_enable_msix(ctrl_info); 3403 break; 3404 case IRQ_MODE_INTX: 3405 pqi_configure_legacy_intx(ctrl_info, true); 3406 sis_enable_intx(ctrl_info); 3407 break; 3408 case IRQ_MODE_NONE: 3409 break; 3410 } 3411 break; 3412 } 3413 3414 ctrl_info->irq_mode = new_mode; 3415 } 3416 3417 #define PQI_LEGACY_INTX_PENDING 0x1 3418 3419 static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info) 3420 { 3421 bool valid_irq; 3422 u32 intx_status; 3423 3424 switch (ctrl_info->irq_mode) { 3425 case IRQ_MODE_MSIX: 3426 valid_irq = true; 3427 break; 3428 case IRQ_MODE_INTX: 3429 intx_status = 3430 readl(&ctrl_info->pqi_registers->legacy_intx_status); 3431 if (intx_status & PQI_LEGACY_INTX_PENDING) 3432 valid_irq = true; 3433 else 3434 valid_irq = false; 3435 break; 3436 case IRQ_MODE_NONE: 3437 default: 3438 valid_irq = false; 3439 break; 3440 } 3441 3442 return valid_irq; 3443 } 3444 3445 static irqreturn_t pqi_irq_handler(int irq, void *data) 3446 { 3447 struct pqi_ctrl_info *ctrl_info; 3448 struct pqi_queue_group *queue_group; 3449 unsigned int num_responses_handled; 3450 3451 queue_group = data; 3452 ctrl_info = queue_group->ctrl_info; 3453 3454 if (!pqi_is_valid_irq(ctrl_info)) 3455 return IRQ_NONE; 3456 3457 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group); 3458 3459 if (irq == ctrl_info->event_irq) 3460 num_responses_handled += pqi_process_event_intr(ctrl_info); 3461 3462 if (num_responses_handled) 3463 atomic_inc(&ctrl_info->num_interrupts); 3464 3465 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL); 3466 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL); 3467 3468 return IRQ_HANDLED; 3469 } 3470 3471 static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info) 3472 { 3473 struct pci_dev *pci_dev = ctrl_info->pci_dev; 3474 int i; 3475 int rc; 3476 3477 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0); 3478 3479 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) { 3480 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0, 3481 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]); 3482 if (rc) { 3483 dev_err(&pci_dev->dev, 3484 "irq %u init failed with error %d\n", 3485 pci_irq_vector(pci_dev, i), rc); 3486 return rc; 3487 } 3488 ctrl_info->num_msix_vectors_initialized++; 3489 } 3490 3491 return 0; 3492 } 3493 3494 static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info) 3495 { 3496 int i; 3497 3498 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++) 3499 free_irq(pci_irq_vector(ctrl_info->pci_dev, i), 3500 &ctrl_info->queue_groups[i]); 3501 3502 ctrl_info->num_msix_vectors_initialized = 0; 3503 } 3504 3505 static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info) 3506 { 3507 int num_vectors_enabled; 3508 3509 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev, 3510 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups, 3511 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); 3512 if (num_vectors_enabled < 0) { 3513 dev_err(&ctrl_info->pci_dev->dev, 3514 "MSI-X init failed with error %d\n", 3515 num_vectors_enabled); 3516 return num_vectors_enabled; 3517 } 3518 3519 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled; 3520 ctrl_info->irq_mode = IRQ_MODE_MSIX; 3521 return 0; 3522 } 3523 3524 static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info) 3525 { 3526 if (ctrl_info->num_msix_vectors_enabled) { 3527 pci_free_irq_vectors(ctrl_info->pci_dev); 3528 ctrl_info->num_msix_vectors_enabled = 0; 3529 } 3530 } 3531 3532 static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info) 3533 { 3534 unsigned int i; 3535 size_t alloc_length; 3536 size_t element_array_length_per_iq; 3537 size_t element_array_length_per_oq; 3538 void *element_array; 3539 void __iomem *next_queue_index; 3540 void *aligned_pointer; 3541 unsigned int num_inbound_queues; 3542 unsigned int num_outbound_queues; 3543 unsigned int num_queue_indexes; 3544 struct pqi_queue_group *queue_group; 3545 3546 element_array_length_per_iq = 3547 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH * 3548 ctrl_info->num_elements_per_iq; 3549 element_array_length_per_oq = 3550 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH * 3551 ctrl_info->num_elements_per_oq; 3552 num_inbound_queues = ctrl_info->num_queue_groups * 2; 3553 num_outbound_queues = ctrl_info->num_queue_groups; 3554 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1; 3555 3556 aligned_pointer = NULL; 3557 3558 for (i = 0; i < num_inbound_queues; i++) { 3559 aligned_pointer = PTR_ALIGN(aligned_pointer, 3560 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3561 aligned_pointer += element_array_length_per_iq; 3562 } 3563 3564 for (i = 0; i < num_outbound_queues; i++) { 3565 aligned_pointer = PTR_ALIGN(aligned_pointer, 3566 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3567 aligned_pointer += element_array_length_per_oq; 3568 } 3569 3570 aligned_pointer = PTR_ALIGN(aligned_pointer, 3571 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3572 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS * 3573 PQI_EVENT_OQ_ELEMENT_LENGTH; 3574 3575 for (i = 0; i < num_queue_indexes; i++) { 3576 aligned_pointer = PTR_ALIGN(aligned_pointer, 3577 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3578 aligned_pointer += sizeof(pqi_index_t); 3579 } 3580 3581 alloc_length = (size_t)aligned_pointer + 3582 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT; 3583 3584 alloc_length += PQI_EXTRA_SGL_MEMORY; 3585 3586 ctrl_info->queue_memory_base = 3587 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length, 3588 &ctrl_info->queue_memory_base_dma_handle, 3589 GFP_KERNEL); 3590 3591 if (!ctrl_info->queue_memory_base) 3592 return -ENOMEM; 3593 3594 ctrl_info->queue_memory_length = alloc_length; 3595 3596 element_array = PTR_ALIGN(ctrl_info->queue_memory_base, 3597 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3598 3599 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3600 queue_group = &ctrl_info->queue_groups[i]; 3601 queue_group->iq_element_array[RAID_PATH] = element_array; 3602 queue_group->iq_element_array_bus_addr[RAID_PATH] = 3603 ctrl_info->queue_memory_base_dma_handle + 3604 (element_array - ctrl_info->queue_memory_base); 3605 element_array += element_array_length_per_iq; 3606 element_array = PTR_ALIGN(element_array, 3607 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3608 queue_group->iq_element_array[AIO_PATH] = element_array; 3609 queue_group->iq_element_array_bus_addr[AIO_PATH] = 3610 ctrl_info->queue_memory_base_dma_handle + 3611 (element_array - ctrl_info->queue_memory_base); 3612 element_array += element_array_length_per_iq; 3613 element_array = PTR_ALIGN(element_array, 3614 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3615 } 3616 3617 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3618 queue_group = &ctrl_info->queue_groups[i]; 3619 queue_group->oq_element_array = element_array; 3620 queue_group->oq_element_array_bus_addr = 3621 ctrl_info->queue_memory_base_dma_handle + 3622 (element_array - ctrl_info->queue_memory_base); 3623 element_array += element_array_length_per_oq; 3624 element_array = PTR_ALIGN(element_array, 3625 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3626 } 3627 3628 ctrl_info->event_queue.oq_element_array = element_array; 3629 ctrl_info->event_queue.oq_element_array_bus_addr = 3630 ctrl_info->queue_memory_base_dma_handle + 3631 (element_array - ctrl_info->queue_memory_base); 3632 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS * 3633 PQI_EVENT_OQ_ELEMENT_LENGTH; 3634 3635 next_queue_index = (void __iomem *)PTR_ALIGN(element_array, 3636 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3637 3638 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3639 queue_group = &ctrl_info->queue_groups[i]; 3640 queue_group->iq_ci[RAID_PATH] = next_queue_index; 3641 queue_group->iq_ci_bus_addr[RAID_PATH] = 3642 ctrl_info->queue_memory_base_dma_handle + 3643 (next_queue_index - 3644 (void __iomem *)ctrl_info->queue_memory_base); 3645 next_queue_index += sizeof(pqi_index_t); 3646 next_queue_index = PTR_ALIGN(next_queue_index, 3647 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3648 queue_group->iq_ci[AIO_PATH] = next_queue_index; 3649 queue_group->iq_ci_bus_addr[AIO_PATH] = 3650 ctrl_info->queue_memory_base_dma_handle + 3651 (next_queue_index - 3652 (void __iomem *)ctrl_info->queue_memory_base); 3653 next_queue_index += sizeof(pqi_index_t); 3654 next_queue_index = PTR_ALIGN(next_queue_index, 3655 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3656 queue_group->oq_pi = next_queue_index; 3657 queue_group->oq_pi_bus_addr = 3658 ctrl_info->queue_memory_base_dma_handle + 3659 (next_queue_index - 3660 (void __iomem *)ctrl_info->queue_memory_base); 3661 next_queue_index += sizeof(pqi_index_t); 3662 next_queue_index = PTR_ALIGN(next_queue_index, 3663 PQI_OPERATIONAL_INDEX_ALIGNMENT); 3664 } 3665 3666 ctrl_info->event_queue.oq_pi = next_queue_index; 3667 ctrl_info->event_queue.oq_pi_bus_addr = 3668 ctrl_info->queue_memory_base_dma_handle + 3669 (next_queue_index - 3670 (void __iomem *)ctrl_info->queue_memory_base); 3671 3672 return 0; 3673 } 3674 3675 static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info) 3676 { 3677 unsigned int i; 3678 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID; 3679 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID; 3680 3681 /* 3682 * Initialize the backpointers to the controller structure in 3683 * each operational queue group structure. 3684 */ 3685 for (i = 0; i < ctrl_info->num_queue_groups; i++) 3686 ctrl_info->queue_groups[i].ctrl_info = ctrl_info; 3687 3688 /* 3689 * Assign IDs to all operational queues. Note that the IDs 3690 * assigned to operational IQs are independent of the IDs 3691 * assigned to operational OQs. 3692 */ 3693 ctrl_info->event_queue.oq_id = next_oq_id++; 3694 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3695 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++; 3696 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++; 3697 ctrl_info->queue_groups[i].oq_id = next_oq_id++; 3698 } 3699 3700 /* 3701 * Assign MSI-X table entry indexes to all queues. Note that the 3702 * interrupt for the event queue is shared with the first queue group. 3703 */ 3704 ctrl_info->event_queue.int_msg_num = 0; 3705 for (i = 0; i < ctrl_info->num_queue_groups; i++) 3706 ctrl_info->queue_groups[i].int_msg_num = i; 3707 3708 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 3709 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]); 3710 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]); 3711 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]); 3712 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]); 3713 } 3714 } 3715 3716 static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info) 3717 { 3718 size_t alloc_length; 3719 struct pqi_admin_queues_aligned *admin_queues_aligned; 3720 struct pqi_admin_queues *admin_queues; 3721 3722 alloc_length = sizeof(struct pqi_admin_queues_aligned) + 3723 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT; 3724 3725 ctrl_info->admin_queue_memory_base = 3726 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length, 3727 &ctrl_info->admin_queue_memory_base_dma_handle, 3728 GFP_KERNEL); 3729 3730 if (!ctrl_info->admin_queue_memory_base) 3731 return -ENOMEM; 3732 3733 ctrl_info->admin_queue_memory_length = alloc_length; 3734 3735 admin_queues = &ctrl_info->admin_queues; 3736 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base, 3737 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT); 3738 admin_queues->iq_element_array = 3739 &admin_queues_aligned->iq_element_array; 3740 admin_queues->oq_element_array = 3741 &admin_queues_aligned->oq_element_array; 3742 admin_queues->iq_ci = &admin_queues_aligned->iq_ci; 3743 admin_queues->oq_pi = 3744 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi; 3745 3746 admin_queues->iq_element_array_bus_addr = 3747 ctrl_info->admin_queue_memory_base_dma_handle + 3748 (admin_queues->iq_element_array - 3749 ctrl_info->admin_queue_memory_base); 3750 admin_queues->oq_element_array_bus_addr = 3751 ctrl_info->admin_queue_memory_base_dma_handle + 3752 (admin_queues->oq_element_array - 3753 ctrl_info->admin_queue_memory_base); 3754 admin_queues->iq_ci_bus_addr = 3755 ctrl_info->admin_queue_memory_base_dma_handle + 3756 ((void *)admin_queues->iq_ci - 3757 ctrl_info->admin_queue_memory_base); 3758 admin_queues->oq_pi_bus_addr = 3759 ctrl_info->admin_queue_memory_base_dma_handle + 3760 ((void __iomem *)admin_queues->oq_pi - 3761 (void __iomem *)ctrl_info->admin_queue_memory_base); 3762 3763 return 0; 3764 } 3765 3766 #define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ 3767 #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1 3768 3769 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info) 3770 { 3771 struct pqi_device_registers __iomem *pqi_registers; 3772 struct pqi_admin_queues *admin_queues; 3773 unsigned long timeout; 3774 u8 status; 3775 u32 reg; 3776 3777 pqi_registers = ctrl_info->pqi_registers; 3778 admin_queues = &ctrl_info->admin_queues; 3779 3780 writeq((u64)admin_queues->iq_element_array_bus_addr, 3781 &pqi_registers->admin_iq_element_array_addr); 3782 writeq((u64)admin_queues->oq_element_array_bus_addr, 3783 &pqi_registers->admin_oq_element_array_addr); 3784 writeq((u64)admin_queues->iq_ci_bus_addr, 3785 &pqi_registers->admin_iq_ci_addr); 3786 writeq((u64)admin_queues->oq_pi_bus_addr, 3787 &pqi_registers->admin_oq_pi_addr); 3788 3789 reg = PQI_ADMIN_IQ_NUM_ELEMENTS | 3790 (PQI_ADMIN_OQ_NUM_ELEMENTS) << 8 | 3791 (admin_queues->int_msg_num << 16); 3792 writel(reg, &pqi_registers->admin_iq_num_elements); 3793 writel(PQI_CREATE_ADMIN_QUEUE_PAIR, 3794 &pqi_registers->function_and_status_code); 3795 3796 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies; 3797 while (1) { 3798 status = readb(&pqi_registers->function_and_status_code); 3799 if (status == PQI_STATUS_IDLE) 3800 break; 3801 if (time_after(jiffies, timeout)) 3802 return -ETIMEDOUT; 3803 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS); 3804 } 3805 3806 /* 3807 * The offset registers are not initialized to the correct 3808 * offsets until *after* the create admin queue pair command 3809 * completes successfully. 3810 */ 3811 admin_queues->iq_pi = ctrl_info->iomem_base + 3812 PQI_DEVICE_REGISTERS_OFFSET + 3813 readq(&pqi_registers->admin_iq_pi_offset); 3814 admin_queues->oq_ci = ctrl_info->iomem_base + 3815 PQI_DEVICE_REGISTERS_OFFSET + 3816 readq(&pqi_registers->admin_oq_ci_offset); 3817 3818 return 0; 3819 } 3820 3821 static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info, 3822 struct pqi_general_admin_request *request) 3823 { 3824 struct pqi_admin_queues *admin_queues; 3825 void *next_element; 3826 pqi_index_t iq_pi; 3827 3828 admin_queues = &ctrl_info->admin_queues; 3829 iq_pi = admin_queues->iq_pi_copy; 3830 3831 next_element = admin_queues->iq_element_array + 3832 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH); 3833 3834 memcpy(next_element, request, sizeof(*request)); 3835 3836 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS; 3837 admin_queues->iq_pi_copy = iq_pi; 3838 3839 /* 3840 * This write notifies the controller that an IU is available to be 3841 * processed. 3842 */ 3843 writel(iq_pi, admin_queues->iq_pi); 3844 } 3845 3846 #define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60 3847 3848 static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info, 3849 struct pqi_general_admin_response *response) 3850 { 3851 struct pqi_admin_queues *admin_queues; 3852 pqi_index_t oq_pi; 3853 pqi_index_t oq_ci; 3854 unsigned long timeout; 3855 3856 admin_queues = &ctrl_info->admin_queues; 3857 oq_ci = admin_queues->oq_ci_copy; 3858 3859 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies; 3860 3861 while (1) { 3862 oq_pi = readl(admin_queues->oq_pi); 3863 if (oq_pi != oq_ci) 3864 break; 3865 if (time_after(jiffies, timeout)) { 3866 dev_err(&ctrl_info->pci_dev->dev, 3867 "timed out waiting for admin response\n"); 3868 return -ETIMEDOUT; 3869 } 3870 if (!sis_is_firmware_running(ctrl_info)) 3871 return -ENXIO; 3872 usleep_range(1000, 2000); 3873 } 3874 3875 memcpy(response, admin_queues->oq_element_array + 3876 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response)); 3877 3878 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS; 3879 admin_queues->oq_ci_copy = oq_ci; 3880 writel(oq_ci, admin_queues->oq_ci); 3881 3882 return 0; 3883 } 3884 3885 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info, 3886 struct pqi_queue_group *queue_group, enum pqi_io_path path, 3887 struct pqi_io_request *io_request) 3888 { 3889 struct pqi_io_request *next; 3890 void *next_element; 3891 pqi_index_t iq_pi; 3892 pqi_index_t iq_ci; 3893 size_t iu_length; 3894 unsigned long flags; 3895 unsigned int num_elements_needed; 3896 unsigned int num_elements_to_end_of_queue; 3897 size_t copy_count; 3898 struct pqi_iu_header *request; 3899 3900 spin_lock_irqsave(&queue_group->submit_lock[path], flags); 3901 3902 if (io_request) { 3903 io_request->queue_group = queue_group; 3904 list_add_tail(&io_request->request_list_entry, 3905 &queue_group->request_list[path]); 3906 } 3907 3908 iq_pi = queue_group->iq_pi_copy[path]; 3909 3910 list_for_each_entry_safe(io_request, next, 3911 &queue_group->request_list[path], request_list_entry) { 3912 3913 request = io_request->iu; 3914 3915 iu_length = get_unaligned_le16(&request->iu_length) + 3916 PQI_REQUEST_HEADER_LENGTH; 3917 num_elements_needed = 3918 DIV_ROUND_UP(iu_length, 3919 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3920 3921 iq_ci = readl(queue_group->iq_ci[path]); 3922 3923 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci, 3924 ctrl_info->num_elements_per_iq)) 3925 break; 3926 3927 put_unaligned_le16(queue_group->oq_id, 3928 &request->response_queue_id); 3929 3930 next_element = queue_group->iq_element_array[path] + 3931 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 3932 3933 num_elements_to_end_of_queue = 3934 ctrl_info->num_elements_per_iq - iq_pi; 3935 3936 if (num_elements_needed <= num_elements_to_end_of_queue) { 3937 memcpy(next_element, request, iu_length); 3938 } else { 3939 copy_count = num_elements_to_end_of_queue * 3940 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 3941 memcpy(next_element, request, copy_count); 3942 memcpy(queue_group->iq_element_array[path], 3943 (u8 *)request + copy_count, 3944 iu_length - copy_count); 3945 } 3946 3947 iq_pi = (iq_pi + num_elements_needed) % 3948 ctrl_info->num_elements_per_iq; 3949 3950 list_del(&io_request->request_list_entry); 3951 } 3952 3953 if (iq_pi != queue_group->iq_pi_copy[path]) { 3954 queue_group->iq_pi_copy[path] = iq_pi; 3955 /* 3956 * This write notifies the controller that one or more IUs are 3957 * available to be processed. 3958 */ 3959 writel(iq_pi, queue_group->iq_pi[path]); 3960 } 3961 3962 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags); 3963 } 3964 3965 #define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10 3966 3967 static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info, 3968 struct completion *wait) 3969 { 3970 int rc; 3971 3972 while (1) { 3973 if (wait_for_completion_io_timeout(wait, 3974 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) { 3975 rc = 0; 3976 break; 3977 } 3978 3979 pqi_check_ctrl_health(ctrl_info); 3980 if (pqi_ctrl_offline(ctrl_info)) { 3981 rc = -ENXIO; 3982 break; 3983 } 3984 } 3985 3986 return rc; 3987 } 3988 3989 static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request, 3990 void *context) 3991 { 3992 struct completion *waiting = context; 3993 3994 complete(waiting); 3995 } 3996 3997 static int pqi_process_raid_io_error_synchronous(struct pqi_raid_error_info 3998 *error_info) 3999 { 4000 int rc = -EIO; 4001 4002 switch (error_info->data_out_result) { 4003 case PQI_DATA_IN_OUT_GOOD: 4004 if (error_info->status == SAM_STAT_GOOD) 4005 rc = 0; 4006 break; 4007 case PQI_DATA_IN_OUT_UNDERFLOW: 4008 if (error_info->status == SAM_STAT_GOOD || 4009 error_info->status == SAM_STAT_CHECK_CONDITION) 4010 rc = 0; 4011 break; 4012 case PQI_DATA_IN_OUT_ABORTED: 4013 rc = PQI_CMD_STATUS_ABORTED; 4014 break; 4015 } 4016 4017 return rc; 4018 } 4019 4020 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info, 4021 struct pqi_iu_header *request, unsigned int flags, 4022 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs) 4023 { 4024 int rc = 0; 4025 struct pqi_io_request *io_request; 4026 unsigned long start_jiffies; 4027 unsigned long msecs_blocked; 4028 size_t iu_length; 4029 DECLARE_COMPLETION_ONSTACK(wait); 4030 4031 /* 4032 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value 4033 * are mutually exclusive. 4034 */ 4035 4036 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) { 4037 if (down_interruptible(&ctrl_info->sync_request_sem)) 4038 return -ERESTARTSYS; 4039 } else { 4040 if (timeout_msecs == NO_TIMEOUT) { 4041 down(&ctrl_info->sync_request_sem); 4042 } else { 4043 start_jiffies = jiffies; 4044 if (down_timeout(&ctrl_info->sync_request_sem, 4045 msecs_to_jiffies(timeout_msecs))) 4046 return -ETIMEDOUT; 4047 msecs_blocked = 4048 jiffies_to_msecs(jiffies - start_jiffies); 4049 if (msecs_blocked >= timeout_msecs) { 4050 rc = -ETIMEDOUT; 4051 goto out; 4052 } 4053 timeout_msecs -= msecs_blocked; 4054 } 4055 } 4056 4057 pqi_ctrl_busy(ctrl_info); 4058 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs); 4059 if (timeout_msecs == 0) { 4060 pqi_ctrl_unbusy(ctrl_info); 4061 rc = -ETIMEDOUT; 4062 goto out; 4063 } 4064 4065 if (pqi_ctrl_offline(ctrl_info)) { 4066 pqi_ctrl_unbusy(ctrl_info); 4067 rc = -ENXIO; 4068 goto out; 4069 } 4070 4071 io_request = pqi_alloc_io_request(ctrl_info); 4072 4073 put_unaligned_le16(io_request->index, 4074 &(((struct pqi_raid_path_request *)request)->request_id)); 4075 4076 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO) 4077 ((struct pqi_raid_path_request *)request)->error_index = 4078 ((struct pqi_raid_path_request *)request)->request_id; 4079 4080 iu_length = get_unaligned_le16(&request->iu_length) + 4081 PQI_REQUEST_HEADER_LENGTH; 4082 memcpy(io_request->iu, request, iu_length); 4083 4084 io_request->io_complete_callback = pqi_raid_synchronous_complete; 4085 io_request->context = &wait; 4086 4087 pqi_start_io(ctrl_info, 4088 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 4089 io_request); 4090 4091 pqi_ctrl_unbusy(ctrl_info); 4092 4093 if (timeout_msecs == NO_TIMEOUT) { 4094 pqi_wait_for_completion_io(ctrl_info, &wait); 4095 } else { 4096 if (!wait_for_completion_io_timeout(&wait, 4097 msecs_to_jiffies(timeout_msecs))) { 4098 dev_warn(&ctrl_info->pci_dev->dev, 4099 "command timed out\n"); 4100 rc = -ETIMEDOUT; 4101 } 4102 } 4103 4104 if (error_info) { 4105 if (io_request->error_info) 4106 memcpy(error_info, io_request->error_info, 4107 sizeof(*error_info)); 4108 else 4109 memset(error_info, 0, sizeof(*error_info)); 4110 } else if (rc == 0 && io_request->error_info) { 4111 rc = pqi_process_raid_io_error_synchronous( 4112 io_request->error_info); 4113 } 4114 4115 pqi_free_io_request(io_request); 4116 4117 out: 4118 up(&ctrl_info->sync_request_sem); 4119 4120 return rc; 4121 } 4122 4123 static int pqi_validate_admin_response( 4124 struct pqi_general_admin_response *response, u8 expected_function_code) 4125 { 4126 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN) 4127 return -EINVAL; 4128 4129 if (get_unaligned_le16(&response->header.iu_length) != 4130 PQI_GENERAL_ADMIN_IU_LENGTH) 4131 return -EINVAL; 4132 4133 if (response->function_code != expected_function_code) 4134 return -EINVAL; 4135 4136 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) 4137 return -EINVAL; 4138 4139 return 0; 4140 } 4141 4142 static int pqi_submit_admin_request_synchronous( 4143 struct pqi_ctrl_info *ctrl_info, 4144 struct pqi_general_admin_request *request, 4145 struct pqi_general_admin_response *response) 4146 { 4147 int rc; 4148 4149 pqi_submit_admin_request(ctrl_info, request); 4150 4151 rc = pqi_poll_for_admin_response(ctrl_info, response); 4152 4153 if (rc == 0) 4154 rc = pqi_validate_admin_response(response, 4155 request->function_code); 4156 4157 return rc; 4158 } 4159 4160 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info) 4161 { 4162 int rc; 4163 struct pqi_general_admin_request request; 4164 struct pqi_general_admin_response response; 4165 struct pqi_device_capability *capability; 4166 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor; 4167 4168 capability = kmalloc(sizeof(*capability), GFP_KERNEL); 4169 if (!capability) 4170 return -ENOMEM; 4171 4172 memset(&request, 0, sizeof(request)); 4173 4174 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4175 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4176 &request.header.iu_length); 4177 request.function_code = 4178 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY; 4179 put_unaligned_le32(sizeof(*capability), 4180 &request.data.report_device_capability.buffer_length); 4181 4182 rc = pqi_map_single(ctrl_info->pci_dev, 4183 &request.data.report_device_capability.sg_descriptor, 4184 capability, sizeof(*capability), 4185 DMA_FROM_DEVICE); 4186 if (rc) 4187 goto out; 4188 4189 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4190 &response); 4191 4192 pqi_pci_unmap(ctrl_info->pci_dev, 4193 &request.data.report_device_capability.sg_descriptor, 1, 4194 DMA_FROM_DEVICE); 4195 4196 if (rc) 4197 goto out; 4198 4199 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) { 4200 rc = -EIO; 4201 goto out; 4202 } 4203 4204 ctrl_info->max_inbound_queues = 4205 get_unaligned_le16(&capability->max_inbound_queues); 4206 ctrl_info->max_elements_per_iq = 4207 get_unaligned_le16(&capability->max_elements_per_iq); 4208 ctrl_info->max_iq_element_length = 4209 get_unaligned_le16(&capability->max_iq_element_length) 4210 * 16; 4211 ctrl_info->max_outbound_queues = 4212 get_unaligned_le16(&capability->max_outbound_queues); 4213 ctrl_info->max_elements_per_oq = 4214 get_unaligned_le16(&capability->max_elements_per_oq); 4215 ctrl_info->max_oq_element_length = 4216 get_unaligned_le16(&capability->max_oq_element_length) 4217 * 16; 4218 4219 sop_iu_layer_descriptor = 4220 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP]; 4221 4222 ctrl_info->max_inbound_iu_length_per_firmware = 4223 get_unaligned_le16( 4224 &sop_iu_layer_descriptor->max_inbound_iu_length); 4225 ctrl_info->inbound_spanning_supported = 4226 sop_iu_layer_descriptor->inbound_spanning_supported; 4227 ctrl_info->outbound_spanning_supported = 4228 sop_iu_layer_descriptor->outbound_spanning_supported; 4229 4230 out: 4231 kfree(capability); 4232 4233 return rc; 4234 } 4235 4236 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info) 4237 { 4238 if (ctrl_info->max_iq_element_length < 4239 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 4240 dev_err(&ctrl_info->pci_dev->dev, 4241 "max. inbound queue element length of %d is less than the required length of %d\n", 4242 ctrl_info->max_iq_element_length, 4243 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4244 return -EINVAL; 4245 } 4246 4247 if (ctrl_info->max_oq_element_length < 4248 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) { 4249 dev_err(&ctrl_info->pci_dev->dev, 4250 "max. outbound queue element length of %d is less than the required length of %d\n", 4251 ctrl_info->max_oq_element_length, 4252 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 4253 return -EINVAL; 4254 } 4255 4256 if (ctrl_info->max_inbound_iu_length_per_firmware < 4257 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 4258 dev_err(&ctrl_info->pci_dev->dev, 4259 "max. inbound IU length of %u is less than the min. required length of %d\n", 4260 ctrl_info->max_inbound_iu_length_per_firmware, 4261 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4262 return -EINVAL; 4263 } 4264 4265 if (!ctrl_info->inbound_spanning_supported) { 4266 dev_err(&ctrl_info->pci_dev->dev, 4267 "the controller does not support inbound spanning\n"); 4268 return -EINVAL; 4269 } 4270 4271 if (ctrl_info->outbound_spanning_supported) { 4272 dev_err(&ctrl_info->pci_dev->dev, 4273 "the controller supports outbound spanning but this driver does not\n"); 4274 return -EINVAL; 4275 } 4276 4277 return 0; 4278 } 4279 4280 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info) 4281 { 4282 int rc; 4283 struct pqi_event_queue *event_queue; 4284 struct pqi_general_admin_request request; 4285 struct pqi_general_admin_response response; 4286 4287 event_queue = &ctrl_info->event_queue; 4288 4289 /* 4290 * Create OQ (Outbound Queue - device to host queue) to dedicate 4291 * to events. 4292 */ 4293 memset(&request, 0, sizeof(request)); 4294 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4295 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4296 &request.header.iu_length); 4297 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4298 put_unaligned_le16(event_queue->oq_id, 4299 &request.data.create_operational_oq.queue_id); 4300 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr, 4301 &request.data.create_operational_oq.element_array_addr); 4302 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr, 4303 &request.data.create_operational_oq.pi_addr); 4304 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS, 4305 &request.data.create_operational_oq.num_elements); 4306 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16, 4307 &request.data.create_operational_oq.element_length); 4308 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4309 put_unaligned_le16(event_queue->int_msg_num, 4310 &request.data.create_operational_oq.int_msg_num); 4311 4312 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4313 &response); 4314 if (rc) 4315 return rc; 4316 4317 event_queue->oq_ci = ctrl_info->iomem_base + 4318 PQI_DEVICE_REGISTERS_OFFSET + 4319 get_unaligned_le64( 4320 &response.data.create_operational_oq.oq_ci_offset); 4321 4322 return 0; 4323 } 4324 4325 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info, 4326 unsigned int group_number) 4327 { 4328 int rc; 4329 struct pqi_queue_group *queue_group; 4330 struct pqi_general_admin_request request; 4331 struct pqi_general_admin_response response; 4332 4333 queue_group = &ctrl_info->queue_groups[group_number]; 4334 4335 /* 4336 * Create IQ (Inbound Queue - host to device queue) for 4337 * RAID path. 4338 */ 4339 memset(&request, 0, sizeof(request)); 4340 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4341 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4342 &request.header.iu_length); 4343 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4344 put_unaligned_le16(queue_group->iq_id[RAID_PATH], 4345 &request.data.create_operational_iq.queue_id); 4346 put_unaligned_le64( 4347 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH], 4348 &request.data.create_operational_iq.element_array_addr); 4349 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH], 4350 &request.data.create_operational_iq.ci_addr); 4351 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4352 &request.data.create_operational_iq.num_elements); 4353 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4354 &request.data.create_operational_iq.element_length); 4355 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4356 4357 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4358 &response); 4359 if (rc) { 4360 dev_err(&ctrl_info->pci_dev->dev, 4361 "error creating inbound RAID queue\n"); 4362 return rc; 4363 } 4364 4365 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base + 4366 PQI_DEVICE_REGISTERS_OFFSET + 4367 get_unaligned_le64( 4368 &response.data.create_operational_iq.iq_pi_offset); 4369 4370 /* 4371 * Create IQ (Inbound Queue - host to device queue) for 4372 * Advanced I/O (AIO) path. 4373 */ 4374 memset(&request, 0, sizeof(request)); 4375 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4376 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4377 &request.header.iu_length); 4378 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4379 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4380 &request.data.create_operational_iq.queue_id); 4381 put_unaligned_le64((u64)queue_group-> 4382 iq_element_array_bus_addr[AIO_PATH], 4383 &request.data.create_operational_iq.element_array_addr); 4384 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH], 4385 &request.data.create_operational_iq.ci_addr); 4386 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4387 &request.data.create_operational_iq.num_elements); 4388 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4389 &request.data.create_operational_iq.element_length); 4390 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4391 4392 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4393 &response); 4394 if (rc) { 4395 dev_err(&ctrl_info->pci_dev->dev, 4396 "error creating inbound AIO queue\n"); 4397 return rc; 4398 } 4399 4400 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base + 4401 PQI_DEVICE_REGISTERS_OFFSET + 4402 get_unaligned_le64( 4403 &response.data.create_operational_iq.iq_pi_offset); 4404 4405 /* 4406 * Designate the 2nd IQ as the AIO path. By default, all IQs are 4407 * assumed to be for RAID path I/O unless we change the queue's 4408 * property. 4409 */ 4410 memset(&request, 0, sizeof(request)); 4411 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4412 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4413 &request.header.iu_length); 4414 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY; 4415 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4416 &request.data.change_operational_iq_properties.queue_id); 4417 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE, 4418 &request.data.change_operational_iq_properties.vendor_specific); 4419 4420 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4421 &response); 4422 if (rc) { 4423 dev_err(&ctrl_info->pci_dev->dev, 4424 "error changing queue property\n"); 4425 return rc; 4426 } 4427 4428 /* 4429 * Create OQ (Outbound Queue - device to host queue). 4430 */ 4431 memset(&request, 0, sizeof(request)); 4432 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4433 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4434 &request.header.iu_length); 4435 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4436 put_unaligned_le16(queue_group->oq_id, 4437 &request.data.create_operational_oq.queue_id); 4438 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr, 4439 &request.data.create_operational_oq.element_array_addr); 4440 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr, 4441 &request.data.create_operational_oq.pi_addr); 4442 put_unaligned_le16(ctrl_info->num_elements_per_oq, 4443 &request.data.create_operational_oq.num_elements); 4444 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16, 4445 &request.data.create_operational_oq.element_length); 4446 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4447 put_unaligned_le16(queue_group->int_msg_num, 4448 &request.data.create_operational_oq.int_msg_num); 4449 4450 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4451 &response); 4452 if (rc) { 4453 dev_err(&ctrl_info->pci_dev->dev, 4454 "error creating outbound queue\n"); 4455 return rc; 4456 } 4457 4458 queue_group->oq_ci = ctrl_info->iomem_base + 4459 PQI_DEVICE_REGISTERS_OFFSET + 4460 get_unaligned_le64( 4461 &response.data.create_operational_oq.oq_ci_offset); 4462 4463 return 0; 4464 } 4465 4466 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info) 4467 { 4468 int rc; 4469 unsigned int i; 4470 4471 rc = pqi_create_event_queue(ctrl_info); 4472 if (rc) { 4473 dev_err(&ctrl_info->pci_dev->dev, 4474 "error creating event queue\n"); 4475 return rc; 4476 } 4477 4478 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 4479 rc = pqi_create_queue_group(ctrl_info, i); 4480 if (rc) { 4481 dev_err(&ctrl_info->pci_dev->dev, 4482 "error creating queue group number %u/%u\n", 4483 i, ctrl_info->num_queue_groups); 4484 return rc; 4485 } 4486 } 4487 4488 return 0; 4489 } 4490 4491 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \ 4492 (offsetof(struct pqi_event_config, descriptors) + \ 4493 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor))) 4494 4495 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info, 4496 bool enable_events) 4497 { 4498 int rc; 4499 unsigned int i; 4500 struct pqi_event_config *event_config; 4501 struct pqi_event_descriptor *event_descriptor; 4502 struct pqi_general_management_request request; 4503 4504 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4505 GFP_KERNEL); 4506 if (!event_config) 4507 return -ENOMEM; 4508 4509 memset(&request, 0, sizeof(request)); 4510 4511 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG; 4512 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4513 data.report_event_configuration.sg_descriptors[1]) - 4514 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4515 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4516 &request.data.report_event_configuration.buffer_length); 4517 4518 rc = pqi_map_single(ctrl_info->pci_dev, 4519 request.data.report_event_configuration.sg_descriptors, 4520 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4521 DMA_FROM_DEVICE); 4522 if (rc) 4523 goto out; 4524 4525 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 4526 0, NULL, NO_TIMEOUT); 4527 4528 pqi_pci_unmap(ctrl_info->pci_dev, 4529 request.data.report_event_configuration.sg_descriptors, 1, 4530 DMA_FROM_DEVICE); 4531 4532 if (rc) 4533 goto out; 4534 4535 for (i = 0; i < event_config->num_event_descriptors; i++) { 4536 event_descriptor = &event_config->descriptors[i]; 4537 if (enable_events && 4538 pqi_is_supported_event(event_descriptor->event_type)) 4539 put_unaligned_le16(ctrl_info->event_queue.oq_id, 4540 &event_descriptor->oq_id); 4541 else 4542 put_unaligned_le16(0, &event_descriptor->oq_id); 4543 } 4544 4545 memset(&request, 0, sizeof(request)); 4546 4547 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG; 4548 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4549 data.report_event_configuration.sg_descriptors[1]) - 4550 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4551 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4552 &request.data.report_event_configuration.buffer_length); 4553 4554 rc = pqi_map_single(ctrl_info->pci_dev, 4555 request.data.report_event_configuration.sg_descriptors, 4556 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4557 DMA_TO_DEVICE); 4558 if (rc) 4559 goto out; 4560 4561 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 4562 NULL, NO_TIMEOUT); 4563 4564 pqi_pci_unmap(ctrl_info->pci_dev, 4565 request.data.report_event_configuration.sg_descriptors, 1, 4566 DMA_TO_DEVICE); 4567 4568 out: 4569 kfree(event_config); 4570 4571 return rc; 4572 } 4573 4574 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info) 4575 { 4576 return pqi_configure_events(ctrl_info, true); 4577 } 4578 4579 static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info) 4580 { 4581 return pqi_configure_events(ctrl_info, false); 4582 } 4583 4584 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info) 4585 { 4586 unsigned int i; 4587 struct device *dev; 4588 size_t sg_chain_buffer_length; 4589 struct pqi_io_request *io_request; 4590 4591 if (!ctrl_info->io_request_pool) 4592 return; 4593 4594 dev = &ctrl_info->pci_dev->dev; 4595 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4596 io_request = ctrl_info->io_request_pool; 4597 4598 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4599 kfree(io_request->iu); 4600 if (!io_request->sg_chain_buffer) 4601 break; 4602 dma_free_coherent(dev, sg_chain_buffer_length, 4603 io_request->sg_chain_buffer, 4604 io_request->sg_chain_buffer_dma_handle); 4605 io_request++; 4606 } 4607 4608 kfree(ctrl_info->io_request_pool); 4609 ctrl_info->io_request_pool = NULL; 4610 } 4611 4612 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info) 4613 { 4614 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev, 4615 ctrl_info->error_buffer_length, 4616 &ctrl_info->error_buffer_dma_handle, 4617 GFP_KERNEL); 4618 4619 if (!ctrl_info->error_buffer) 4620 return -ENOMEM; 4621 4622 return 0; 4623 } 4624 4625 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info) 4626 { 4627 unsigned int i; 4628 void *sg_chain_buffer; 4629 size_t sg_chain_buffer_length; 4630 dma_addr_t sg_chain_buffer_dma_handle; 4631 struct device *dev; 4632 struct pqi_io_request *io_request; 4633 4634 ctrl_info->io_request_pool = 4635 kcalloc(ctrl_info->max_io_slots, 4636 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL); 4637 4638 if (!ctrl_info->io_request_pool) { 4639 dev_err(&ctrl_info->pci_dev->dev, 4640 "failed to allocate I/O request pool\n"); 4641 goto error; 4642 } 4643 4644 dev = &ctrl_info->pci_dev->dev; 4645 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4646 io_request = ctrl_info->io_request_pool; 4647 4648 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4649 io_request->iu = 4650 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL); 4651 4652 if (!io_request->iu) { 4653 dev_err(&ctrl_info->pci_dev->dev, 4654 "failed to allocate IU buffers\n"); 4655 goto error; 4656 } 4657 4658 sg_chain_buffer = dma_alloc_coherent(dev, 4659 sg_chain_buffer_length, &sg_chain_buffer_dma_handle, 4660 GFP_KERNEL); 4661 4662 if (!sg_chain_buffer) { 4663 dev_err(&ctrl_info->pci_dev->dev, 4664 "failed to allocate PQI scatter-gather chain buffers\n"); 4665 goto error; 4666 } 4667 4668 io_request->index = i; 4669 io_request->sg_chain_buffer = sg_chain_buffer; 4670 io_request->sg_chain_buffer_dma_handle = 4671 sg_chain_buffer_dma_handle; 4672 io_request++; 4673 } 4674 4675 return 0; 4676 4677 error: 4678 pqi_free_all_io_requests(ctrl_info); 4679 4680 return -ENOMEM; 4681 } 4682 4683 /* 4684 * Calculate required resources that are sized based on max. outstanding 4685 * requests and max. transfer size. 4686 */ 4687 4688 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info) 4689 { 4690 u32 max_transfer_size; 4691 u32 max_sg_entries; 4692 4693 ctrl_info->scsi_ml_can_queue = 4694 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS; 4695 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests; 4696 4697 ctrl_info->error_buffer_length = 4698 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH; 4699 4700 if (reset_devices) 4701 max_transfer_size = min(ctrl_info->max_transfer_size, 4702 PQI_MAX_TRANSFER_SIZE_KDUMP); 4703 else 4704 max_transfer_size = min(ctrl_info->max_transfer_size, 4705 PQI_MAX_TRANSFER_SIZE); 4706 4707 max_sg_entries = max_transfer_size / PAGE_SIZE; 4708 4709 /* +1 to cover when the buffer is not page-aligned. */ 4710 max_sg_entries++; 4711 4712 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries); 4713 4714 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE; 4715 4716 ctrl_info->sg_chain_buffer_length = 4717 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) + 4718 PQI_EXTRA_SGL_MEMORY; 4719 ctrl_info->sg_tablesize = max_sg_entries; 4720 ctrl_info->max_sectors = max_transfer_size / 512; 4721 } 4722 4723 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info) 4724 { 4725 int num_queue_groups; 4726 u16 num_elements_per_iq; 4727 u16 num_elements_per_oq; 4728 4729 if (reset_devices) { 4730 num_queue_groups = 1; 4731 } else { 4732 int num_cpus; 4733 int max_queue_groups; 4734 4735 max_queue_groups = min(ctrl_info->max_inbound_queues / 2, 4736 ctrl_info->max_outbound_queues - 1); 4737 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS); 4738 4739 num_cpus = num_online_cpus(); 4740 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors); 4741 num_queue_groups = min(num_queue_groups, max_queue_groups); 4742 } 4743 4744 ctrl_info->num_queue_groups = num_queue_groups; 4745 ctrl_info->max_hw_queue_index = num_queue_groups - 1; 4746 4747 /* 4748 * Make sure that the max. inbound IU length is an even multiple 4749 * of our inbound element length. 4750 */ 4751 ctrl_info->max_inbound_iu_length = 4752 (ctrl_info->max_inbound_iu_length_per_firmware / 4753 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) * 4754 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 4755 4756 num_elements_per_iq = 4757 (ctrl_info->max_inbound_iu_length / 4758 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4759 4760 /* Add one because one element in each queue is unusable. */ 4761 num_elements_per_iq++; 4762 4763 num_elements_per_iq = min(num_elements_per_iq, 4764 ctrl_info->max_elements_per_iq); 4765 4766 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1; 4767 num_elements_per_oq = min(num_elements_per_oq, 4768 ctrl_info->max_elements_per_oq); 4769 4770 ctrl_info->num_elements_per_iq = num_elements_per_iq; 4771 ctrl_info->num_elements_per_oq = num_elements_per_oq; 4772 4773 ctrl_info->max_sg_per_iu = 4774 ((ctrl_info->max_inbound_iu_length - 4775 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) / 4776 sizeof(struct pqi_sg_descriptor)) + 4777 PQI_MAX_EMBEDDED_SG_DESCRIPTORS; 4778 } 4779 4780 static inline void pqi_set_sg_descriptor( 4781 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg) 4782 { 4783 u64 address = (u64)sg_dma_address(sg); 4784 unsigned int length = sg_dma_len(sg); 4785 4786 put_unaligned_le64(address, &sg_descriptor->address); 4787 put_unaligned_le32(length, &sg_descriptor->length); 4788 put_unaligned_le32(0, &sg_descriptor->flags); 4789 } 4790 4791 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info, 4792 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd, 4793 struct pqi_io_request *io_request) 4794 { 4795 int i; 4796 u16 iu_length; 4797 int sg_count; 4798 bool chained; 4799 unsigned int num_sg_in_iu; 4800 unsigned int max_sg_per_iu; 4801 struct scatterlist *sg; 4802 struct pqi_sg_descriptor *sg_descriptor; 4803 4804 sg_count = scsi_dma_map(scmd); 4805 if (sg_count < 0) 4806 return sg_count; 4807 4808 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 4809 PQI_REQUEST_HEADER_LENGTH; 4810 4811 if (sg_count == 0) 4812 goto out; 4813 4814 sg = scsi_sglist(scmd); 4815 sg_descriptor = request->sg_descriptors; 4816 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4817 chained = false; 4818 num_sg_in_iu = 0; 4819 i = 0; 4820 4821 while (1) { 4822 pqi_set_sg_descriptor(sg_descriptor, sg); 4823 if (!chained) 4824 num_sg_in_iu++; 4825 i++; 4826 if (i == sg_count) 4827 break; 4828 sg_descriptor++; 4829 if (i == max_sg_per_iu) { 4830 put_unaligned_le64( 4831 (u64)io_request->sg_chain_buffer_dma_handle, 4832 &sg_descriptor->address); 4833 put_unaligned_le32((sg_count - num_sg_in_iu) 4834 * sizeof(*sg_descriptor), 4835 &sg_descriptor->length); 4836 put_unaligned_le32(CISS_SG_CHAIN, 4837 &sg_descriptor->flags); 4838 chained = true; 4839 num_sg_in_iu++; 4840 sg_descriptor = io_request->sg_chain_buffer; 4841 } 4842 sg = sg_next(sg); 4843 } 4844 4845 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4846 request->partial = chained; 4847 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4848 4849 out: 4850 put_unaligned_le16(iu_length, &request->header.iu_length); 4851 4852 return 0; 4853 } 4854 4855 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info, 4856 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd, 4857 struct pqi_io_request *io_request) 4858 { 4859 int i; 4860 u16 iu_length; 4861 int sg_count; 4862 bool chained; 4863 unsigned int num_sg_in_iu; 4864 unsigned int max_sg_per_iu; 4865 struct scatterlist *sg; 4866 struct pqi_sg_descriptor *sg_descriptor; 4867 4868 sg_count = scsi_dma_map(scmd); 4869 if (sg_count < 0) 4870 return sg_count; 4871 4872 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) - 4873 PQI_REQUEST_HEADER_LENGTH; 4874 num_sg_in_iu = 0; 4875 4876 if (sg_count == 0) 4877 goto out; 4878 4879 sg = scsi_sglist(scmd); 4880 sg_descriptor = request->sg_descriptors; 4881 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4882 chained = false; 4883 i = 0; 4884 4885 while (1) { 4886 pqi_set_sg_descriptor(sg_descriptor, sg); 4887 if (!chained) 4888 num_sg_in_iu++; 4889 i++; 4890 if (i == sg_count) 4891 break; 4892 sg_descriptor++; 4893 if (i == max_sg_per_iu) { 4894 put_unaligned_le64( 4895 (u64)io_request->sg_chain_buffer_dma_handle, 4896 &sg_descriptor->address); 4897 put_unaligned_le32((sg_count - num_sg_in_iu) 4898 * sizeof(*sg_descriptor), 4899 &sg_descriptor->length); 4900 put_unaligned_le32(CISS_SG_CHAIN, 4901 &sg_descriptor->flags); 4902 chained = true; 4903 num_sg_in_iu++; 4904 sg_descriptor = io_request->sg_chain_buffer; 4905 } 4906 sg = sg_next(sg); 4907 } 4908 4909 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4910 request->partial = chained; 4911 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4912 4913 out: 4914 put_unaligned_le16(iu_length, &request->header.iu_length); 4915 request->num_sg_descriptors = num_sg_in_iu; 4916 4917 return 0; 4918 } 4919 4920 static void pqi_raid_io_complete(struct pqi_io_request *io_request, 4921 void *context) 4922 { 4923 struct scsi_cmnd *scmd; 4924 4925 scmd = io_request->scmd; 4926 pqi_free_io_request(io_request); 4927 scsi_dma_unmap(scmd); 4928 pqi_scsi_done(scmd); 4929 } 4930 4931 static int pqi_raid_submit_scsi_cmd_with_io_request( 4932 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request, 4933 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 4934 struct pqi_queue_group *queue_group) 4935 { 4936 int rc; 4937 size_t cdb_length; 4938 struct pqi_raid_path_request *request; 4939 4940 io_request->io_complete_callback = pqi_raid_io_complete; 4941 io_request->scmd = scmd; 4942 4943 request = io_request->iu; 4944 memset(request, 0, 4945 offsetof(struct pqi_raid_path_request, sg_descriptors)); 4946 4947 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 4948 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 4949 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 4950 put_unaligned_le16(io_request->index, &request->request_id); 4951 request->error_index = request->request_id; 4952 memcpy(request->lun_number, device->scsi3addr, 4953 sizeof(request->lun_number)); 4954 4955 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb)); 4956 memcpy(request->cdb, scmd->cmnd, cdb_length); 4957 4958 switch (cdb_length) { 4959 case 6: 4960 case 10: 4961 case 12: 4962 case 16: 4963 /* No bytes in the Additional CDB bytes field */ 4964 request->additional_cdb_bytes_usage = 4965 SOP_ADDITIONAL_CDB_BYTES_0; 4966 break; 4967 case 20: 4968 /* 4 bytes in the Additional cdb field */ 4969 request->additional_cdb_bytes_usage = 4970 SOP_ADDITIONAL_CDB_BYTES_4; 4971 break; 4972 case 24: 4973 /* 8 bytes in the Additional cdb field */ 4974 request->additional_cdb_bytes_usage = 4975 SOP_ADDITIONAL_CDB_BYTES_8; 4976 break; 4977 case 28: 4978 /* 12 bytes in the Additional cdb field */ 4979 request->additional_cdb_bytes_usage = 4980 SOP_ADDITIONAL_CDB_BYTES_12; 4981 break; 4982 case 32: 4983 default: 4984 /* 16 bytes in the Additional cdb field */ 4985 request->additional_cdb_bytes_usage = 4986 SOP_ADDITIONAL_CDB_BYTES_16; 4987 break; 4988 } 4989 4990 switch (scmd->sc_data_direction) { 4991 case DMA_TO_DEVICE: 4992 request->data_direction = SOP_READ_FLAG; 4993 break; 4994 case DMA_FROM_DEVICE: 4995 request->data_direction = SOP_WRITE_FLAG; 4996 break; 4997 case DMA_NONE: 4998 request->data_direction = SOP_NO_DIRECTION_FLAG; 4999 break; 5000 case DMA_BIDIRECTIONAL: 5001 request->data_direction = SOP_BIDIRECTIONAL; 5002 break; 5003 default: 5004 dev_err(&ctrl_info->pci_dev->dev, 5005 "unknown data direction: %d\n", 5006 scmd->sc_data_direction); 5007 break; 5008 } 5009 5010 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request); 5011 if (rc) { 5012 pqi_free_io_request(io_request); 5013 return SCSI_MLQUEUE_HOST_BUSY; 5014 } 5015 5016 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request); 5017 5018 return 0; 5019 } 5020 5021 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 5022 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 5023 struct pqi_queue_group *queue_group) 5024 { 5025 struct pqi_io_request *io_request; 5026 5027 io_request = pqi_alloc_io_request(ctrl_info); 5028 5029 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 5030 device, scmd, queue_group); 5031 } 5032 5033 static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info) 5034 { 5035 if (!pqi_ctrl_blocked(ctrl_info)) 5036 schedule_work(&ctrl_info->raid_bypass_retry_work); 5037 } 5038 5039 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request) 5040 { 5041 struct scsi_cmnd *scmd; 5042 struct pqi_scsi_dev *device; 5043 struct pqi_ctrl_info *ctrl_info; 5044 5045 if (!io_request->raid_bypass) 5046 return false; 5047 5048 scmd = io_request->scmd; 5049 if ((scmd->result & 0xff) == SAM_STAT_GOOD) 5050 return false; 5051 if (host_byte(scmd->result) == DID_NO_CONNECT) 5052 return false; 5053 5054 device = scmd->device->hostdata; 5055 if (pqi_device_offline(device)) 5056 return false; 5057 5058 ctrl_info = shost_to_hba(scmd->device->host); 5059 if (pqi_ctrl_offline(ctrl_info)) 5060 return false; 5061 5062 return true; 5063 } 5064 5065 static inline void pqi_add_to_raid_bypass_retry_list( 5066 struct pqi_ctrl_info *ctrl_info, 5067 struct pqi_io_request *io_request, bool at_head) 5068 { 5069 unsigned long flags; 5070 5071 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5072 if (at_head) 5073 list_add(&io_request->request_list_entry, 5074 &ctrl_info->raid_bypass_retry_list); 5075 else 5076 list_add_tail(&io_request->request_list_entry, 5077 &ctrl_info->raid_bypass_retry_list); 5078 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5079 } 5080 5081 static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request, 5082 void *context) 5083 { 5084 struct scsi_cmnd *scmd; 5085 5086 scmd = io_request->scmd; 5087 pqi_free_io_request(io_request); 5088 pqi_scsi_done(scmd); 5089 } 5090 5091 static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request) 5092 { 5093 struct scsi_cmnd *scmd; 5094 struct pqi_ctrl_info *ctrl_info; 5095 5096 io_request->io_complete_callback = pqi_queued_raid_bypass_complete; 5097 scmd = io_request->scmd; 5098 scmd->result = 0; 5099 ctrl_info = shost_to_hba(scmd->device->host); 5100 5101 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false); 5102 pqi_schedule_bypass_retry(ctrl_info); 5103 } 5104 5105 static int pqi_retry_raid_bypass(struct pqi_io_request *io_request) 5106 { 5107 struct scsi_cmnd *scmd; 5108 struct pqi_scsi_dev *device; 5109 struct pqi_ctrl_info *ctrl_info; 5110 struct pqi_queue_group *queue_group; 5111 5112 scmd = io_request->scmd; 5113 device = scmd->device->hostdata; 5114 if (pqi_device_in_reset(device)) { 5115 pqi_free_io_request(io_request); 5116 set_host_byte(scmd, DID_RESET); 5117 pqi_scsi_done(scmd); 5118 return 0; 5119 } 5120 5121 ctrl_info = shost_to_hba(scmd->device->host); 5122 queue_group = io_request->queue_group; 5123 5124 pqi_reinit_io_request(io_request); 5125 5126 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 5127 device, scmd, queue_group); 5128 } 5129 5130 static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request( 5131 struct pqi_ctrl_info *ctrl_info) 5132 { 5133 unsigned long flags; 5134 struct pqi_io_request *io_request; 5135 5136 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5137 io_request = list_first_entry_or_null( 5138 &ctrl_info->raid_bypass_retry_list, 5139 struct pqi_io_request, request_list_entry); 5140 if (io_request) 5141 list_del(&io_request->request_list_entry); 5142 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5143 5144 return io_request; 5145 } 5146 5147 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info) 5148 { 5149 int rc; 5150 struct pqi_io_request *io_request; 5151 5152 pqi_ctrl_busy(ctrl_info); 5153 5154 while (1) { 5155 if (pqi_ctrl_blocked(ctrl_info)) 5156 break; 5157 io_request = pqi_next_queued_raid_bypass_request(ctrl_info); 5158 if (!io_request) 5159 break; 5160 rc = pqi_retry_raid_bypass(io_request); 5161 if (rc) { 5162 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, 5163 true); 5164 pqi_schedule_bypass_retry(ctrl_info); 5165 break; 5166 } 5167 } 5168 5169 pqi_ctrl_unbusy(ctrl_info); 5170 } 5171 5172 static void pqi_raid_bypass_retry_worker(struct work_struct *work) 5173 { 5174 struct pqi_ctrl_info *ctrl_info; 5175 5176 ctrl_info = container_of(work, struct pqi_ctrl_info, 5177 raid_bypass_retry_work); 5178 pqi_retry_raid_bypass_requests(ctrl_info); 5179 } 5180 5181 static void pqi_clear_all_queued_raid_bypass_retries( 5182 struct pqi_ctrl_info *ctrl_info) 5183 { 5184 unsigned long flags; 5185 5186 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5187 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 5188 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5189 } 5190 5191 static void pqi_aio_io_complete(struct pqi_io_request *io_request, 5192 void *context) 5193 { 5194 struct scsi_cmnd *scmd; 5195 5196 scmd = io_request->scmd; 5197 scsi_dma_unmap(scmd); 5198 if (io_request->status == -EAGAIN) 5199 set_host_byte(scmd, DID_IMM_RETRY); 5200 else if (pqi_raid_bypass_retry_needed(io_request)) { 5201 pqi_queue_raid_bypass_retry(io_request); 5202 return; 5203 } 5204 pqi_free_io_request(io_request); 5205 pqi_scsi_done(scmd); 5206 } 5207 5208 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 5209 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 5210 struct pqi_queue_group *queue_group) 5211 { 5212 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle, 5213 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false); 5214 } 5215 5216 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, 5217 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, 5218 unsigned int cdb_length, struct pqi_queue_group *queue_group, 5219 struct pqi_encryption_info *encryption_info, bool raid_bypass) 5220 { 5221 int rc; 5222 struct pqi_io_request *io_request; 5223 struct pqi_aio_path_request *request; 5224 5225 io_request = pqi_alloc_io_request(ctrl_info); 5226 io_request->io_complete_callback = pqi_aio_io_complete; 5227 io_request->scmd = scmd; 5228 io_request->raid_bypass = raid_bypass; 5229 5230 request = io_request->iu; 5231 memset(request, 0, 5232 offsetof(struct pqi_raid_path_request, sg_descriptors)); 5233 5234 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO; 5235 put_unaligned_le32(aio_handle, &request->nexus_id); 5236 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 5237 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 5238 put_unaligned_le16(io_request->index, &request->request_id); 5239 request->error_index = request->request_id; 5240 if (cdb_length > sizeof(request->cdb)) 5241 cdb_length = sizeof(request->cdb); 5242 request->cdb_length = cdb_length; 5243 memcpy(request->cdb, cdb, cdb_length); 5244 5245 switch (scmd->sc_data_direction) { 5246 case DMA_TO_DEVICE: 5247 request->data_direction = SOP_READ_FLAG; 5248 break; 5249 case DMA_FROM_DEVICE: 5250 request->data_direction = SOP_WRITE_FLAG; 5251 break; 5252 case DMA_NONE: 5253 request->data_direction = SOP_NO_DIRECTION_FLAG; 5254 break; 5255 case DMA_BIDIRECTIONAL: 5256 request->data_direction = SOP_BIDIRECTIONAL; 5257 break; 5258 default: 5259 dev_err(&ctrl_info->pci_dev->dev, 5260 "unknown data direction: %d\n", 5261 scmd->sc_data_direction); 5262 break; 5263 } 5264 5265 if (encryption_info) { 5266 request->encryption_enable = true; 5267 put_unaligned_le16(encryption_info->data_encryption_key_index, 5268 &request->data_encryption_key_index); 5269 put_unaligned_le32(encryption_info->encrypt_tweak_lower, 5270 &request->encrypt_tweak_lower); 5271 put_unaligned_le32(encryption_info->encrypt_tweak_upper, 5272 &request->encrypt_tweak_upper); 5273 } 5274 5275 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request); 5276 if (rc) { 5277 pqi_free_io_request(io_request); 5278 return SCSI_MLQUEUE_HOST_BUSY; 5279 } 5280 5281 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request); 5282 5283 return 0; 5284 } 5285 5286 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info, 5287 struct scsi_cmnd *scmd) 5288 { 5289 u16 hw_queue; 5290 5291 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request)); 5292 if (hw_queue > ctrl_info->max_hw_queue_index) 5293 hw_queue = 0; 5294 5295 return hw_queue; 5296 } 5297 5298 /* 5299 * This function gets called just before we hand the completed SCSI request 5300 * back to the SML. 5301 */ 5302 5303 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd) 5304 { 5305 struct pqi_scsi_dev *device; 5306 5307 if (!scmd->device) { 5308 set_host_byte(scmd, DID_NO_CONNECT); 5309 return; 5310 } 5311 5312 device = scmd->device->hostdata; 5313 if (!device) { 5314 set_host_byte(scmd, DID_NO_CONNECT); 5315 return; 5316 } 5317 5318 atomic_dec(&device->scsi_cmds_outstanding); 5319 } 5320 5321 static int pqi_scsi_queue_command(struct Scsi_Host *shost, 5322 struct scsi_cmnd *scmd) 5323 { 5324 int rc; 5325 struct pqi_ctrl_info *ctrl_info; 5326 struct pqi_scsi_dev *device; 5327 u16 hw_queue; 5328 struct pqi_queue_group *queue_group; 5329 bool raid_bypassed; 5330 5331 device = scmd->device->hostdata; 5332 ctrl_info = shost_to_hba(shost); 5333 5334 if (!device) { 5335 set_host_byte(scmd, DID_NO_CONNECT); 5336 pqi_scsi_done(scmd); 5337 return 0; 5338 } 5339 5340 atomic_inc(&device->scsi_cmds_outstanding); 5341 5342 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(ctrl_info, 5343 device)) { 5344 set_host_byte(scmd, DID_NO_CONNECT); 5345 pqi_scsi_done(scmd); 5346 return 0; 5347 } 5348 5349 pqi_ctrl_busy(ctrl_info); 5350 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) || 5351 pqi_ctrl_in_ofa(ctrl_info)) { 5352 rc = SCSI_MLQUEUE_HOST_BUSY; 5353 goto out; 5354 } 5355 5356 /* 5357 * This is necessary because the SML doesn't zero out this field during 5358 * error recovery. 5359 */ 5360 scmd->result = 0; 5361 5362 hw_queue = pqi_get_hw_queue(ctrl_info, scmd); 5363 queue_group = &ctrl_info->queue_groups[hw_queue]; 5364 5365 if (pqi_is_logical_device(device)) { 5366 raid_bypassed = false; 5367 if (device->raid_bypass_enabled && 5368 !blk_rq_is_passthrough(scmd->request)) { 5369 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, 5370 scmd, queue_group); 5371 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) 5372 raid_bypassed = true; 5373 } 5374 if (!raid_bypassed) 5375 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, 5376 queue_group); 5377 } else { 5378 if (device->aio_enabled) 5379 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, 5380 queue_group); 5381 else 5382 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, 5383 queue_group); 5384 } 5385 5386 out: 5387 pqi_ctrl_unbusy(ctrl_info); 5388 if (rc) 5389 atomic_dec(&device->scsi_cmds_outstanding); 5390 5391 return rc; 5392 } 5393 5394 static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info, 5395 struct pqi_queue_group *queue_group) 5396 { 5397 unsigned int path; 5398 unsigned long flags; 5399 bool list_is_empty; 5400 5401 for (path = 0; path < 2; path++) { 5402 while (1) { 5403 spin_lock_irqsave( 5404 &queue_group->submit_lock[path], flags); 5405 list_is_empty = 5406 list_empty(&queue_group->request_list[path]); 5407 spin_unlock_irqrestore( 5408 &queue_group->submit_lock[path], flags); 5409 if (list_is_empty) 5410 break; 5411 pqi_check_ctrl_health(ctrl_info); 5412 if (pqi_ctrl_offline(ctrl_info)) 5413 return -ENXIO; 5414 usleep_range(1000, 2000); 5415 } 5416 } 5417 5418 return 0; 5419 } 5420 5421 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info) 5422 { 5423 int rc; 5424 unsigned int i; 5425 unsigned int path; 5426 struct pqi_queue_group *queue_group; 5427 pqi_index_t iq_pi; 5428 pqi_index_t iq_ci; 5429 5430 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5431 queue_group = &ctrl_info->queue_groups[i]; 5432 5433 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group); 5434 if (rc) 5435 return rc; 5436 5437 for (path = 0; path < 2; path++) { 5438 iq_pi = queue_group->iq_pi_copy[path]; 5439 5440 while (1) { 5441 iq_ci = readl(queue_group->iq_ci[path]); 5442 if (iq_ci == iq_pi) 5443 break; 5444 pqi_check_ctrl_health(ctrl_info); 5445 if (pqi_ctrl_offline(ctrl_info)) 5446 return -ENXIO; 5447 usleep_range(1000, 2000); 5448 } 5449 } 5450 } 5451 5452 return 0; 5453 } 5454 5455 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info, 5456 struct pqi_scsi_dev *device) 5457 { 5458 unsigned int i; 5459 unsigned int path; 5460 struct pqi_queue_group *queue_group; 5461 unsigned long flags; 5462 struct pqi_io_request *io_request; 5463 struct pqi_io_request *next; 5464 struct scsi_cmnd *scmd; 5465 struct pqi_scsi_dev *scsi_device; 5466 5467 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5468 queue_group = &ctrl_info->queue_groups[i]; 5469 5470 for (path = 0; path < 2; path++) { 5471 spin_lock_irqsave( 5472 &queue_group->submit_lock[path], flags); 5473 5474 list_for_each_entry_safe(io_request, next, 5475 &queue_group->request_list[path], 5476 request_list_entry) { 5477 scmd = io_request->scmd; 5478 if (!scmd) 5479 continue; 5480 5481 scsi_device = scmd->device->hostdata; 5482 if (scsi_device != device) 5483 continue; 5484 5485 list_del(&io_request->request_list_entry); 5486 set_host_byte(scmd, DID_RESET); 5487 pqi_scsi_done(scmd); 5488 } 5489 5490 spin_unlock_irqrestore( 5491 &queue_group->submit_lock[path], flags); 5492 } 5493 } 5494 } 5495 5496 static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info) 5497 { 5498 unsigned int i; 5499 unsigned int path; 5500 struct pqi_queue_group *queue_group; 5501 unsigned long flags; 5502 struct pqi_io_request *io_request; 5503 struct pqi_io_request *next; 5504 struct scsi_cmnd *scmd; 5505 5506 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5507 queue_group = &ctrl_info->queue_groups[i]; 5508 5509 for (path = 0; path < 2; path++) { 5510 spin_lock_irqsave(&queue_group->submit_lock[path], 5511 flags); 5512 5513 list_for_each_entry_safe(io_request, next, 5514 &queue_group->request_list[path], 5515 request_list_entry) { 5516 5517 scmd = io_request->scmd; 5518 if (!scmd) 5519 continue; 5520 5521 list_del(&io_request->request_list_entry); 5522 set_host_byte(scmd, DID_RESET); 5523 pqi_scsi_done(scmd); 5524 } 5525 5526 spin_unlock_irqrestore( 5527 &queue_group->submit_lock[path], flags); 5528 } 5529 } 5530 } 5531 5532 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5533 struct pqi_scsi_dev *device, unsigned long timeout_secs) 5534 { 5535 unsigned long timeout; 5536 5537 timeout = (timeout_secs * PQI_HZ) + jiffies; 5538 5539 while (atomic_read(&device->scsi_cmds_outstanding)) { 5540 pqi_check_ctrl_health(ctrl_info); 5541 if (pqi_ctrl_offline(ctrl_info)) 5542 return -ENXIO; 5543 if (timeout_secs != NO_TIMEOUT) { 5544 if (time_after(jiffies, timeout)) { 5545 dev_err(&ctrl_info->pci_dev->dev, 5546 "timed out waiting for pending IO\n"); 5547 return -ETIMEDOUT; 5548 } 5549 } 5550 usleep_range(1000, 2000); 5551 } 5552 5553 return 0; 5554 } 5555 5556 static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5557 unsigned long timeout_secs) 5558 { 5559 bool io_pending; 5560 unsigned long flags; 5561 unsigned long timeout; 5562 struct pqi_scsi_dev *device; 5563 5564 timeout = (timeout_secs * PQI_HZ) + jiffies; 5565 while (1) { 5566 io_pending = false; 5567 5568 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5569 list_for_each_entry(device, &ctrl_info->scsi_device_list, 5570 scsi_device_list_entry) { 5571 if (atomic_read(&device->scsi_cmds_outstanding)) { 5572 io_pending = true; 5573 break; 5574 } 5575 } 5576 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 5577 flags); 5578 5579 if (!io_pending) 5580 break; 5581 5582 pqi_check_ctrl_health(ctrl_info); 5583 if (pqi_ctrl_offline(ctrl_info)) 5584 return -ENXIO; 5585 5586 if (timeout_secs != NO_TIMEOUT) { 5587 if (time_after(jiffies, timeout)) { 5588 dev_err(&ctrl_info->pci_dev->dev, 5589 "timed out waiting for pending IO\n"); 5590 return -ETIMEDOUT; 5591 } 5592 } 5593 usleep_range(1000, 2000); 5594 } 5595 5596 return 0; 5597 } 5598 5599 static void pqi_lun_reset_complete(struct pqi_io_request *io_request, 5600 void *context) 5601 { 5602 struct completion *waiting = context; 5603 5604 complete(waiting); 5605 } 5606 5607 #define PQI_LUN_RESET_TIMEOUT_SECS 10 5608 5609 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info, 5610 struct pqi_scsi_dev *device, struct completion *wait) 5611 { 5612 int rc; 5613 5614 while (1) { 5615 if (wait_for_completion_io_timeout(wait, 5616 PQI_LUN_RESET_TIMEOUT_SECS * PQI_HZ)) { 5617 rc = 0; 5618 break; 5619 } 5620 5621 pqi_check_ctrl_health(ctrl_info); 5622 if (pqi_ctrl_offline(ctrl_info)) { 5623 rc = -ENXIO; 5624 break; 5625 } 5626 } 5627 5628 return rc; 5629 } 5630 5631 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, 5632 struct pqi_scsi_dev *device) 5633 { 5634 int rc; 5635 struct pqi_io_request *io_request; 5636 DECLARE_COMPLETION_ONSTACK(wait); 5637 struct pqi_task_management_request *request; 5638 5639 io_request = pqi_alloc_io_request(ctrl_info); 5640 io_request->io_complete_callback = pqi_lun_reset_complete; 5641 io_request->context = &wait; 5642 5643 request = io_request->iu; 5644 memset(request, 0, sizeof(*request)); 5645 5646 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT; 5647 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH, 5648 &request->header.iu_length); 5649 put_unaligned_le16(io_request->index, &request->request_id); 5650 memcpy(request->lun_number, device->scsi3addr, 5651 sizeof(request->lun_number)); 5652 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET; 5653 5654 pqi_start_io(ctrl_info, 5655 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 5656 io_request); 5657 5658 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait); 5659 if (rc == 0) 5660 rc = io_request->status; 5661 5662 pqi_free_io_request(io_request); 5663 5664 return rc; 5665 } 5666 5667 /* Performs a reset at the LUN level. */ 5668 5669 #define PQI_LUN_RESET_RETRIES 3 5670 #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000 5671 #define PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS 120 5672 5673 static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5674 struct pqi_scsi_dev *device) 5675 { 5676 int rc; 5677 unsigned int retries; 5678 unsigned long timeout_secs; 5679 5680 for (retries = 0;;) { 5681 rc = pqi_lun_reset(ctrl_info, device); 5682 if (rc != -EAGAIN || ++retries > PQI_LUN_RESET_RETRIES) 5683 break; 5684 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS); 5685 } 5686 5687 timeout_secs = rc ? PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS : NO_TIMEOUT; 5688 5689 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs); 5690 5691 return rc == 0 ? SUCCESS : FAILED; 5692 } 5693 5694 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5695 struct pqi_scsi_dev *device) 5696 { 5697 int rc; 5698 5699 mutex_lock(&ctrl_info->lun_reset_mutex); 5700 5701 pqi_ctrl_block_requests(ctrl_info); 5702 pqi_ctrl_wait_until_quiesced(ctrl_info); 5703 pqi_fail_io_queued_for_device(ctrl_info, device); 5704 rc = pqi_wait_until_inbound_queues_empty(ctrl_info); 5705 pqi_device_reset_start(device); 5706 pqi_ctrl_unblock_requests(ctrl_info); 5707 5708 if (rc) 5709 rc = FAILED; 5710 else 5711 rc = _pqi_device_reset(ctrl_info, device); 5712 5713 pqi_device_reset_done(device); 5714 5715 mutex_unlock(&ctrl_info->lun_reset_mutex); 5716 5717 return rc; 5718 } 5719 5720 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd) 5721 { 5722 int rc; 5723 struct Scsi_Host *shost; 5724 struct pqi_ctrl_info *ctrl_info; 5725 struct pqi_scsi_dev *device; 5726 5727 shost = scmd->device->host; 5728 ctrl_info = shost_to_hba(shost); 5729 device = scmd->device->hostdata; 5730 5731 dev_err(&ctrl_info->pci_dev->dev, 5732 "resetting scsi %d:%d:%d:%d\n", 5733 shost->host_no, device->bus, device->target, device->lun); 5734 5735 pqi_check_ctrl_health(ctrl_info); 5736 if (pqi_ctrl_offline(ctrl_info)) { 5737 dev_err(&ctrl_info->pci_dev->dev, 5738 "controller %u offlined - cannot send device reset\n", 5739 ctrl_info->ctrl_id); 5740 rc = FAILED; 5741 goto out; 5742 } 5743 5744 pqi_wait_until_ofa_finished(ctrl_info); 5745 5746 rc = pqi_device_reset(ctrl_info, device); 5747 5748 out: 5749 dev_err(&ctrl_info->pci_dev->dev, 5750 "reset of scsi %d:%d:%d:%d: %s\n", 5751 shost->host_no, device->bus, device->target, device->lun, 5752 rc == SUCCESS ? "SUCCESS" : "FAILED"); 5753 5754 return rc; 5755 } 5756 5757 static int pqi_slave_alloc(struct scsi_device *sdev) 5758 { 5759 struct pqi_scsi_dev *device; 5760 unsigned long flags; 5761 struct pqi_ctrl_info *ctrl_info; 5762 struct scsi_target *starget; 5763 struct sas_rphy *rphy; 5764 5765 ctrl_info = shost_to_hba(sdev->host); 5766 5767 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5768 5769 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) { 5770 starget = scsi_target(sdev); 5771 rphy = target_to_rphy(starget); 5772 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy); 5773 if (device) { 5774 device->target = sdev_id(sdev); 5775 device->lun = sdev->lun; 5776 device->target_lun_valid = true; 5777 } 5778 } else { 5779 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev), 5780 sdev_id(sdev), sdev->lun); 5781 } 5782 5783 if (device) { 5784 sdev->hostdata = device; 5785 device->sdev = sdev; 5786 if (device->queue_depth) { 5787 device->advertised_queue_depth = device->queue_depth; 5788 scsi_change_queue_depth(sdev, 5789 device->advertised_queue_depth); 5790 } 5791 if (pqi_is_logical_device(device)) 5792 pqi_disable_write_same(sdev); 5793 else 5794 sdev->allow_restart = 1; 5795 } 5796 5797 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5798 5799 return 0; 5800 } 5801 5802 static int pqi_map_queues(struct Scsi_Host *shost) 5803 { 5804 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost); 5805 5806 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT], 5807 ctrl_info->pci_dev, 0); 5808 } 5809 5810 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, 5811 void __user *arg) 5812 { 5813 struct pci_dev *pci_dev; 5814 u32 subsystem_vendor; 5815 u32 subsystem_device; 5816 cciss_pci_info_struct pciinfo; 5817 5818 if (!arg) 5819 return -EINVAL; 5820 5821 pci_dev = ctrl_info->pci_dev; 5822 5823 pciinfo.domain = pci_domain_nr(pci_dev->bus); 5824 pciinfo.bus = pci_dev->bus->number; 5825 pciinfo.dev_fn = pci_dev->devfn; 5826 subsystem_vendor = pci_dev->subsystem_vendor; 5827 subsystem_device = pci_dev->subsystem_device; 5828 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | 5829 subsystem_vendor; 5830 5831 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo))) 5832 return -EFAULT; 5833 5834 return 0; 5835 } 5836 5837 static int pqi_getdrivver_ioctl(void __user *arg) 5838 { 5839 u32 version; 5840 5841 if (!arg) 5842 return -EINVAL; 5843 5844 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) | 5845 (DRIVER_RELEASE << 16) | DRIVER_REVISION; 5846 5847 if (copy_to_user(arg, &version, sizeof(version))) 5848 return -EFAULT; 5849 5850 return 0; 5851 } 5852 5853 struct ciss_error_info { 5854 u8 scsi_status; 5855 int command_status; 5856 size_t sense_data_length; 5857 }; 5858 5859 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info, 5860 struct ciss_error_info *ciss_error_info) 5861 { 5862 int ciss_cmd_status; 5863 size_t sense_data_length; 5864 5865 switch (pqi_error_info->data_out_result) { 5866 case PQI_DATA_IN_OUT_GOOD: 5867 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS; 5868 break; 5869 case PQI_DATA_IN_OUT_UNDERFLOW: 5870 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN; 5871 break; 5872 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 5873 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN; 5874 break; 5875 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 5876 case PQI_DATA_IN_OUT_BUFFER_ERROR: 5877 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 5878 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 5879 case PQI_DATA_IN_OUT_ERROR: 5880 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR; 5881 break; 5882 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 5883 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 5884 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 5885 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 5886 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 5887 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 5888 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 5889 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 5890 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 5891 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 5892 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR; 5893 break; 5894 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 5895 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT; 5896 break; 5897 case PQI_DATA_IN_OUT_ABORTED: 5898 ciss_cmd_status = CISS_CMD_STATUS_ABORTED; 5899 break; 5900 case PQI_DATA_IN_OUT_TIMEOUT: 5901 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT; 5902 break; 5903 default: 5904 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS; 5905 break; 5906 } 5907 5908 sense_data_length = 5909 get_unaligned_le16(&pqi_error_info->sense_data_length); 5910 if (sense_data_length == 0) 5911 sense_data_length = 5912 get_unaligned_le16(&pqi_error_info->response_data_length); 5913 if (sense_data_length) 5914 if (sense_data_length > sizeof(pqi_error_info->data)) 5915 sense_data_length = sizeof(pqi_error_info->data); 5916 5917 ciss_error_info->scsi_status = pqi_error_info->status; 5918 ciss_error_info->command_status = ciss_cmd_status; 5919 ciss_error_info->sense_data_length = sense_data_length; 5920 } 5921 5922 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg) 5923 { 5924 int rc; 5925 char *kernel_buffer = NULL; 5926 u16 iu_length; 5927 size_t sense_data_length; 5928 IOCTL_Command_struct iocommand; 5929 struct pqi_raid_path_request request; 5930 struct pqi_raid_error_info pqi_error_info; 5931 struct ciss_error_info ciss_error_info; 5932 5933 if (pqi_ctrl_offline(ctrl_info)) 5934 return -ENXIO; 5935 if (!arg) 5936 return -EINVAL; 5937 if (!capable(CAP_SYS_RAWIO)) 5938 return -EPERM; 5939 if (copy_from_user(&iocommand, arg, sizeof(iocommand))) 5940 return -EFAULT; 5941 if (iocommand.buf_size < 1 && 5942 iocommand.Request.Type.Direction != XFER_NONE) 5943 return -EINVAL; 5944 if (iocommand.Request.CDBLen > sizeof(request.cdb)) 5945 return -EINVAL; 5946 if (iocommand.Request.Type.Type != TYPE_CMD) 5947 return -EINVAL; 5948 5949 switch (iocommand.Request.Type.Direction) { 5950 case XFER_NONE: 5951 case XFER_WRITE: 5952 case XFER_READ: 5953 case XFER_READ | XFER_WRITE: 5954 break; 5955 default: 5956 return -EINVAL; 5957 } 5958 5959 if (iocommand.buf_size > 0) { 5960 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL); 5961 if (!kernel_buffer) 5962 return -ENOMEM; 5963 if (iocommand.Request.Type.Direction & XFER_WRITE) { 5964 if (copy_from_user(kernel_buffer, iocommand.buf, 5965 iocommand.buf_size)) { 5966 rc = -EFAULT; 5967 goto out; 5968 } 5969 } else { 5970 memset(kernel_buffer, 0, iocommand.buf_size); 5971 } 5972 } 5973 5974 memset(&request, 0, sizeof(request)); 5975 5976 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 5977 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 5978 PQI_REQUEST_HEADER_LENGTH; 5979 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes, 5980 sizeof(request.lun_number)); 5981 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen); 5982 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 5983 5984 switch (iocommand.Request.Type.Direction) { 5985 case XFER_NONE: 5986 request.data_direction = SOP_NO_DIRECTION_FLAG; 5987 break; 5988 case XFER_WRITE: 5989 request.data_direction = SOP_WRITE_FLAG; 5990 break; 5991 case XFER_READ: 5992 request.data_direction = SOP_READ_FLAG; 5993 break; 5994 case XFER_READ | XFER_WRITE: 5995 request.data_direction = SOP_BIDIRECTIONAL; 5996 break; 5997 } 5998 5999 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 6000 6001 if (iocommand.buf_size > 0) { 6002 put_unaligned_le32(iocommand.buf_size, &request.buffer_length); 6003 6004 rc = pqi_map_single(ctrl_info->pci_dev, 6005 &request.sg_descriptors[0], kernel_buffer, 6006 iocommand.buf_size, DMA_BIDIRECTIONAL); 6007 if (rc) 6008 goto out; 6009 6010 iu_length += sizeof(request.sg_descriptors[0]); 6011 } 6012 6013 put_unaligned_le16(iu_length, &request.header.iu_length); 6014 6015 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 6016 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT); 6017 6018 if (iocommand.buf_size > 0) 6019 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 6020 DMA_BIDIRECTIONAL); 6021 6022 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info)); 6023 6024 if (rc == 0) { 6025 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info); 6026 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status; 6027 iocommand.error_info.CommandStatus = 6028 ciss_error_info.command_status; 6029 sense_data_length = ciss_error_info.sense_data_length; 6030 if (sense_data_length) { 6031 if (sense_data_length > 6032 sizeof(iocommand.error_info.SenseInfo)) 6033 sense_data_length = 6034 sizeof(iocommand.error_info.SenseInfo); 6035 memcpy(iocommand.error_info.SenseInfo, 6036 pqi_error_info.data, sense_data_length); 6037 iocommand.error_info.SenseLen = sense_data_length; 6038 } 6039 } 6040 6041 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) { 6042 rc = -EFAULT; 6043 goto out; 6044 } 6045 6046 if (rc == 0 && iocommand.buf_size > 0 && 6047 (iocommand.Request.Type.Direction & XFER_READ)) { 6048 if (copy_to_user(iocommand.buf, kernel_buffer, 6049 iocommand.buf_size)) { 6050 rc = -EFAULT; 6051 } 6052 } 6053 6054 out: 6055 kfree(kernel_buffer); 6056 6057 return rc; 6058 } 6059 6060 static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd, 6061 void __user *arg) 6062 { 6063 int rc; 6064 struct pqi_ctrl_info *ctrl_info; 6065 6066 ctrl_info = shost_to_hba(sdev->host); 6067 6068 if (pqi_ctrl_in_ofa(ctrl_info)) 6069 return -EBUSY; 6070 6071 switch (cmd) { 6072 case CCISS_DEREGDISK: 6073 case CCISS_REGNEWDISK: 6074 case CCISS_REGNEWD: 6075 rc = pqi_scan_scsi_devices(ctrl_info); 6076 break; 6077 case CCISS_GETPCIINFO: 6078 rc = pqi_getpciinfo_ioctl(ctrl_info, arg); 6079 break; 6080 case CCISS_GETDRIVVER: 6081 rc = pqi_getdrivver_ioctl(arg); 6082 break; 6083 case CCISS_PASSTHRU: 6084 rc = pqi_passthru_ioctl(ctrl_info, arg); 6085 break; 6086 default: 6087 rc = -EINVAL; 6088 break; 6089 } 6090 6091 return rc; 6092 } 6093 6094 static ssize_t pqi_version_show(struct device *dev, 6095 struct device_attribute *attr, char *buffer) 6096 { 6097 ssize_t count = 0; 6098 struct Scsi_Host *shost; 6099 struct pqi_ctrl_info *ctrl_info; 6100 6101 shost = class_to_shost(dev); 6102 ctrl_info = shost_to_hba(shost); 6103 6104 count += snprintf(buffer + count, PAGE_SIZE - count, 6105 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP); 6106 6107 count += snprintf(buffer + count, PAGE_SIZE - count, 6108 "firmware: %s\n", ctrl_info->firmware_version); 6109 6110 return count; 6111 } 6112 6113 static ssize_t pqi_host_rescan_store(struct device *dev, 6114 struct device_attribute *attr, const char *buffer, size_t count) 6115 { 6116 struct Scsi_Host *shost = class_to_shost(dev); 6117 6118 pqi_scan_start(shost); 6119 6120 return count; 6121 } 6122 6123 static ssize_t pqi_lockup_action_show(struct device *dev, 6124 struct device_attribute *attr, char *buffer) 6125 { 6126 int count = 0; 6127 unsigned int i; 6128 6129 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6130 if (pqi_lockup_actions[i].action == pqi_lockup_action) 6131 count += snprintf(buffer + count, PAGE_SIZE - count, 6132 "[%s] ", pqi_lockup_actions[i].name); 6133 else 6134 count += snprintf(buffer + count, PAGE_SIZE - count, 6135 "%s ", pqi_lockup_actions[i].name); 6136 } 6137 6138 count += snprintf(buffer + count, PAGE_SIZE - count, "\n"); 6139 6140 return count; 6141 } 6142 6143 static ssize_t pqi_lockup_action_store(struct device *dev, 6144 struct device_attribute *attr, const char *buffer, size_t count) 6145 { 6146 unsigned int i; 6147 char *action_name; 6148 char action_name_buffer[32]; 6149 6150 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer)); 6151 action_name = strstrip(action_name_buffer); 6152 6153 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6154 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) { 6155 pqi_lockup_action = pqi_lockup_actions[i].action; 6156 return count; 6157 } 6158 } 6159 6160 return -EINVAL; 6161 } 6162 6163 static DEVICE_ATTR(version, 0444, pqi_version_show, NULL); 6164 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store); 6165 static DEVICE_ATTR(lockup_action, 0644, 6166 pqi_lockup_action_show, pqi_lockup_action_store); 6167 6168 static struct device_attribute *pqi_shost_attrs[] = { 6169 &dev_attr_version, 6170 &dev_attr_rescan, 6171 &dev_attr_lockup_action, 6172 NULL 6173 }; 6174 6175 static ssize_t pqi_unique_id_show(struct device *dev, 6176 struct device_attribute *attr, char *buffer) 6177 { 6178 struct pqi_ctrl_info *ctrl_info; 6179 struct scsi_device *sdev; 6180 struct pqi_scsi_dev *device; 6181 unsigned long flags; 6182 unsigned char uid[16]; 6183 6184 sdev = to_scsi_device(dev); 6185 ctrl_info = shost_to_hba(sdev->host); 6186 6187 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6188 6189 device = sdev->hostdata; 6190 if (!device) { 6191 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 6192 flags); 6193 return -ENODEV; 6194 } 6195 memcpy(uid, device->unique_id, sizeof(uid)); 6196 6197 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6198 6199 return snprintf(buffer, PAGE_SIZE, 6200 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n", 6201 uid[0], uid[1], uid[2], uid[3], 6202 uid[4], uid[5], uid[6], uid[7], 6203 uid[8], uid[9], uid[10], uid[11], 6204 uid[12], uid[13], uid[14], uid[15]); 6205 } 6206 6207 static ssize_t pqi_lunid_show(struct device *dev, 6208 struct device_attribute *attr, char *buffer) 6209 { 6210 struct pqi_ctrl_info *ctrl_info; 6211 struct scsi_device *sdev; 6212 struct pqi_scsi_dev *device; 6213 unsigned long flags; 6214 u8 lunid[8]; 6215 6216 sdev = to_scsi_device(dev); 6217 ctrl_info = shost_to_hba(sdev->host); 6218 6219 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6220 6221 device = sdev->hostdata; 6222 if (!device) { 6223 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 6224 flags); 6225 return -ENODEV; 6226 } 6227 memcpy(lunid, device->scsi3addr, sizeof(lunid)); 6228 6229 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6230 6231 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid); 6232 } 6233 6234 #define MAX_PATHS 8 6235 static ssize_t pqi_path_info_show(struct device *dev, 6236 struct device_attribute *attr, char *buf) 6237 { 6238 struct pqi_ctrl_info *ctrl_info; 6239 struct scsi_device *sdev; 6240 struct pqi_scsi_dev *device; 6241 unsigned long flags; 6242 int i; 6243 int output_len = 0; 6244 u8 box; 6245 u8 bay; 6246 u8 path_map_index = 0; 6247 char *active; 6248 unsigned char phys_connector[2]; 6249 6250 sdev = to_scsi_device(dev); 6251 ctrl_info = shost_to_hba(sdev->host); 6252 6253 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6254 6255 device = sdev->hostdata; 6256 if (!device) { 6257 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 6258 flags); 6259 return -ENODEV; 6260 } 6261 6262 bay = device->bay; 6263 for (i = 0; i < MAX_PATHS; i++) { 6264 path_map_index = 1<<i; 6265 if (i == device->active_path_index) 6266 active = "Active"; 6267 else if (device->path_map & path_map_index) 6268 active = "Inactive"; 6269 else 6270 continue; 6271 6272 output_len += scnprintf(buf + output_len, 6273 PAGE_SIZE - output_len, 6274 "[%d:%d:%d:%d] %20.20s ", 6275 ctrl_info->scsi_host->host_no, 6276 device->bus, device->target, 6277 device->lun, 6278 scsi_device_type(device->devtype)); 6279 6280 if (device->devtype == TYPE_RAID || 6281 pqi_is_logical_device(device)) 6282 goto end_buffer; 6283 6284 memcpy(&phys_connector, &device->phys_connector[i], 6285 sizeof(phys_connector)); 6286 if (phys_connector[0] < '0') 6287 phys_connector[0] = '0'; 6288 if (phys_connector[1] < '0') 6289 phys_connector[1] = '0'; 6290 6291 output_len += scnprintf(buf + output_len, 6292 PAGE_SIZE - output_len, 6293 "PORT: %.2s ", phys_connector); 6294 6295 box = device->box[i]; 6296 if (box != 0 && box != 0xFF) 6297 output_len += scnprintf(buf + output_len, 6298 PAGE_SIZE - output_len, 6299 "BOX: %hhu ", box); 6300 6301 if ((device->devtype == TYPE_DISK || 6302 device->devtype == TYPE_ZBC) && 6303 pqi_expose_device(device)) 6304 output_len += scnprintf(buf + output_len, 6305 PAGE_SIZE - output_len, 6306 "BAY: %hhu ", bay); 6307 6308 end_buffer: 6309 output_len += scnprintf(buf + output_len, 6310 PAGE_SIZE - output_len, 6311 "%s\n", active); 6312 } 6313 6314 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6315 return output_len; 6316 } 6317 6318 6319 static ssize_t pqi_sas_address_show(struct device *dev, 6320 struct device_attribute *attr, char *buffer) 6321 { 6322 struct pqi_ctrl_info *ctrl_info; 6323 struct scsi_device *sdev; 6324 struct pqi_scsi_dev *device; 6325 unsigned long flags; 6326 u64 sas_address; 6327 6328 sdev = to_scsi_device(dev); 6329 ctrl_info = shost_to_hba(sdev->host); 6330 6331 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6332 6333 device = sdev->hostdata; 6334 if (pqi_is_logical_device(device)) { 6335 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 6336 flags); 6337 return -ENODEV; 6338 } 6339 sas_address = device->sas_address; 6340 6341 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6342 6343 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address); 6344 } 6345 6346 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev, 6347 struct device_attribute *attr, char *buffer) 6348 { 6349 struct pqi_ctrl_info *ctrl_info; 6350 struct scsi_device *sdev; 6351 struct pqi_scsi_dev *device; 6352 unsigned long flags; 6353 6354 sdev = to_scsi_device(dev); 6355 ctrl_info = shost_to_hba(sdev->host); 6356 6357 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6358 6359 device = sdev->hostdata; 6360 buffer[0] = device->raid_bypass_enabled ? '1' : '0'; 6361 buffer[1] = '\n'; 6362 buffer[2] = '\0'; 6363 6364 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6365 6366 return 2; 6367 } 6368 6369 static ssize_t pqi_raid_level_show(struct device *dev, 6370 struct device_attribute *attr, char *buffer) 6371 { 6372 struct pqi_ctrl_info *ctrl_info; 6373 struct scsi_device *sdev; 6374 struct pqi_scsi_dev *device; 6375 unsigned long flags; 6376 char *raid_level; 6377 6378 sdev = to_scsi_device(dev); 6379 ctrl_info = shost_to_hba(sdev->host); 6380 6381 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6382 6383 device = sdev->hostdata; 6384 6385 if (pqi_is_logical_device(device)) 6386 raid_level = pqi_raid_level_to_string(device->raid_level); 6387 else 6388 raid_level = "N/A"; 6389 6390 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6391 6392 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level); 6393 } 6394 6395 static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL); 6396 static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL); 6397 static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL); 6398 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL); 6399 static DEVICE_ATTR(ssd_smart_path_enabled, 0444, 6400 pqi_ssd_smart_path_enabled_show, NULL); 6401 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL); 6402 6403 static struct device_attribute *pqi_sdev_attrs[] = { 6404 &dev_attr_lunid, 6405 &dev_attr_unique_id, 6406 &dev_attr_path_info, 6407 &dev_attr_sas_address, 6408 &dev_attr_ssd_smart_path_enabled, 6409 &dev_attr_raid_level, 6410 NULL 6411 }; 6412 6413 static struct scsi_host_template pqi_driver_template = { 6414 .module = THIS_MODULE, 6415 .name = DRIVER_NAME_SHORT, 6416 .proc_name = DRIVER_NAME_SHORT, 6417 .queuecommand = pqi_scsi_queue_command, 6418 .scan_start = pqi_scan_start, 6419 .scan_finished = pqi_scan_finished, 6420 .this_id = -1, 6421 .eh_device_reset_handler = pqi_eh_device_reset_handler, 6422 .ioctl = pqi_ioctl, 6423 .slave_alloc = pqi_slave_alloc, 6424 .map_queues = pqi_map_queues, 6425 .sdev_attrs = pqi_sdev_attrs, 6426 .shost_attrs = pqi_shost_attrs, 6427 }; 6428 6429 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info) 6430 { 6431 int rc; 6432 struct Scsi_Host *shost; 6433 6434 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info)); 6435 if (!shost) { 6436 dev_err(&ctrl_info->pci_dev->dev, 6437 "scsi_host_alloc failed for controller %u\n", 6438 ctrl_info->ctrl_id); 6439 return -ENOMEM; 6440 } 6441 6442 shost->io_port = 0; 6443 shost->n_io_port = 0; 6444 shost->this_id = -1; 6445 shost->max_channel = PQI_MAX_BUS; 6446 shost->max_cmd_len = MAX_COMMAND_SIZE; 6447 shost->max_lun = ~0; 6448 shost->max_id = ~0; 6449 shost->max_sectors = ctrl_info->max_sectors; 6450 shost->can_queue = ctrl_info->scsi_ml_can_queue; 6451 shost->cmd_per_lun = shost->can_queue; 6452 shost->sg_tablesize = ctrl_info->sg_tablesize; 6453 shost->transportt = pqi_sas_transport_template; 6454 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0); 6455 shost->unique_id = shost->irq; 6456 shost->nr_hw_queues = ctrl_info->num_queue_groups; 6457 shost->hostdata[0] = (unsigned long)ctrl_info; 6458 6459 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev); 6460 if (rc) { 6461 dev_err(&ctrl_info->pci_dev->dev, 6462 "scsi_add_host failed for controller %u\n", 6463 ctrl_info->ctrl_id); 6464 goto free_host; 6465 } 6466 6467 rc = pqi_add_sas_host(shost, ctrl_info); 6468 if (rc) { 6469 dev_err(&ctrl_info->pci_dev->dev, 6470 "add SAS host failed for controller %u\n", 6471 ctrl_info->ctrl_id); 6472 goto remove_host; 6473 } 6474 6475 ctrl_info->scsi_host = shost; 6476 6477 return 0; 6478 6479 remove_host: 6480 scsi_remove_host(shost); 6481 free_host: 6482 scsi_host_put(shost); 6483 6484 return rc; 6485 } 6486 6487 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info) 6488 { 6489 struct Scsi_Host *shost; 6490 6491 pqi_delete_sas_host(ctrl_info); 6492 6493 shost = ctrl_info->scsi_host; 6494 if (!shost) 6495 return; 6496 6497 scsi_remove_host(shost); 6498 scsi_host_put(shost); 6499 } 6500 6501 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info) 6502 { 6503 int rc = 0; 6504 struct pqi_device_registers __iomem *pqi_registers; 6505 unsigned long timeout; 6506 unsigned int timeout_msecs; 6507 union pqi_reset_register reset_reg; 6508 6509 pqi_registers = ctrl_info->pqi_registers; 6510 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100; 6511 timeout = msecs_to_jiffies(timeout_msecs) + jiffies; 6512 6513 while (1) { 6514 msleep(PQI_RESET_POLL_INTERVAL_MSECS); 6515 reset_reg.all_bits = readl(&pqi_registers->device_reset); 6516 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED) 6517 break; 6518 pqi_check_ctrl_health(ctrl_info); 6519 if (pqi_ctrl_offline(ctrl_info)) { 6520 rc = -ENXIO; 6521 break; 6522 } 6523 if (time_after(jiffies, timeout)) { 6524 rc = -ETIMEDOUT; 6525 break; 6526 } 6527 } 6528 6529 return rc; 6530 } 6531 6532 static int pqi_reset(struct pqi_ctrl_info *ctrl_info) 6533 { 6534 int rc; 6535 union pqi_reset_register reset_reg; 6536 6537 if (ctrl_info->pqi_reset_quiesce_supported) { 6538 rc = sis_pqi_reset_quiesce(ctrl_info); 6539 if (rc) { 6540 dev_err(&ctrl_info->pci_dev->dev, 6541 "PQI reset failed during quiesce with error %d\n", 6542 rc); 6543 return rc; 6544 } 6545 } 6546 6547 reset_reg.all_bits = 0; 6548 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET; 6549 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET; 6550 6551 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset); 6552 6553 rc = pqi_wait_for_pqi_reset_completion(ctrl_info); 6554 if (rc) 6555 dev_err(&ctrl_info->pci_dev->dev, 6556 "PQI reset failed with error %d\n", rc); 6557 6558 return rc; 6559 } 6560 6561 static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info) 6562 { 6563 int rc; 6564 struct bmic_identify_controller *identify; 6565 6566 identify = kmalloc(sizeof(*identify), GFP_KERNEL); 6567 if (!identify) 6568 return -ENOMEM; 6569 6570 rc = pqi_identify_controller(ctrl_info, identify); 6571 if (rc) 6572 goto out; 6573 6574 memcpy(ctrl_info->firmware_version, identify->firmware_version, 6575 sizeof(identify->firmware_version)); 6576 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0'; 6577 snprintf(ctrl_info->firmware_version + 6578 strlen(ctrl_info->firmware_version), 6579 sizeof(ctrl_info->firmware_version), 6580 "-%u", get_unaligned_le16(&identify->firmware_build_number)); 6581 6582 out: 6583 kfree(identify); 6584 6585 return rc; 6586 } 6587 6588 struct pqi_config_table_section_info { 6589 struct pqi_ctrl_info *ctrl_info; 6590 void *section; 6591 u32 section_offset; 6592 void __iomem *section_iomem_addr; 6593 }; 6594 6595 static inline bool pqi_is_firmware_feature_supported( 6596 struct pqi_config_table_firmware_features *firmware_features, 6597 unsigned int bit_position) 6598 { 6599 unsigned int byte_index; 6600 6601 byte_index = bit_position / BITS_PER_BYTE; 6602 6603 if (byte_index >= le16_to_cpu(firmware_features->num_elements)) 6604 return false; 6605 6606 return firmware_features->features_supported[byte_index] & 6607 (1 << (bit_position % BITS_PER_BYTE)) ? true : false; 6608 } 6609 6610 static inline bool pqi_is_firmware_feature_enabled( 6611 struct pqi_config_table_firmware_features *firmware_features, 6612 void __iomem *firmware_features_iomem_addr, 6613 unsigned int bit_position) 6614 { 6615 unsigned int byte_index; 6616 u8 __iomem *features_enabled_iomem_addr; 6617 6618 byte_index = (bit_position / BITS_PER_BYTE) + 6619 (le16_to_cpu(firmware_features->num_elements) * 2); 6620 6621 features_enabled_iomem_addr = firmware_features_iomem_addr + 6622 offsetof(struct pqi_config_table_firmware_features, 6623 features_supported) + byte_index; 6624 6625 return *((__force u8 *)features_enabled_iomem_addr) & 6626 (1 << (bit_position % BITS_PER_BYTE)) ? true : false; 6627 } 6628 6629 static inline void pqi_request_firmware_feature( 6630 struct pqi_config_table_firmware_features *firmware_features, 6631 unsigned int bit_position) 6632 { 6633 unsigned int byte_index; 6634 6635 byte_index = (bit_position / BITS_PER_BYTE) + 6636 le16_to_cpu(firmware_features->num_elements); 6637 6638 firmware_features->features_supported[byte_index] |= 6639 (1 << (bit_position % BITS_PER_BYTE)); 6640 } 6641 6642 static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info, 6643 u16 first_section, u16 last_section) 6644 { 6645 struct pqi_vendor_general_request request; 6646 6647 memset(&request, 0, sizeof(request)); 6648 6649 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; 6650 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 6651 &request.header.iu_length); 6652 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE, 6653 &request.function_code); 6654 put_unaligned_le16(first_section, 6655 &request.data.config_table_update.first_section); 6656 put_unaligned_le16(last_section, 6657 &request.data.config_table_update.last_section); 6658 6659 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 6660 0, NULL, NO_TIMEOUT); 6661 } 6662 6663 static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info, 6664 struct pqi_config_table_firmware_features *firmware_features, 6665 void __iomem *firmware_features_iomem_addr) 6666 { 6667 void *features_requested; 6668 void __iomem *features_requested_iomem_addr; 6669 6670 features_requested = firmware_features->features_supported + 6671 le16_to_cpu(firmware_features->num_elements); 6672 6673 features_requested_iomem_addr = firmware_features_iomem_addr + 6674 (features_requested - (void *)firmware_features); 6675 6676 memcpy_toio(features_requested_iomem_addr, features_requested, 6677 le16_to_cpu(firmware_features->num_elements)); 6678 6679 return pqi_config_table_update(ctrl_info, 6680 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES, 6681 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES); 6682 } 6683 6684 struct pqi_firmware_feature { 6685 char *feature_name; 6686 unsigned int feature_bit; 6687 bool supported; 6688 bool enabled; 6689 void (*feature_status)(struct pqi_ctrl_info *ctrl_info, 6690 struct pqi_firmware_feature *firmware_feature); 6691 }; 6692 6693 static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info, 6694 struct pqi_firmware_feature *firmware_feature) 6695 { 6696 if (!firmware_feature->supported) { 6697 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n", 6698 firmware_feature->feature_name); 6699 return; 6700 } 6701 6702 if (firmware_feature->enabled) { 6703 dev_info(&ctrl_info->pci_dev->dev, 6704 "%s enabled\n", firmware_feature->feature_name); 6705 return; 6706 } 6707 6708 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n", 6709 firmware_feature->feature_name); 6710 } 6711 6712 static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info, 6713 struct pqi_firmware_feature *firmware_feature) 6714 { 6715 if (firmware_feature->feature_status) 6716 firmware_feature->feature_status(ctrl_info, firmware_feature); 6717 } 6718 6719 static DEFINE_MUTEX(pqi_firmware_features_mutex); 6720 6721 static struct pqi_firmware_feature pqi_firmware_features[] = { 6722 { 6723 .feature_name = "Online Firmware Activation", 6724 .feature_bit = PQI_FIRMWARE_FEATURE_OFA, 6725 .feature_status = pqi_firmware_feature_status, 6726 }, 6727 { 6728 .feature_name = "Serial Management Protocol", 6729 .feature_bit = PQI_FIRMWARE_FEATURE_SMP, 6730 .feature_status = pqi_firmware_feature_status, 6731 }, 6732 { 6733 .feature_name = "New Soft Reset Handshake", 6734 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE, 6735 .feature_status = pqi_firmware_feature_status, 6736 }, 6737 }; 6738 6739 static void pqi_process_firmware_features( 6740 struct pqi_config_table_section_info *section_info) 6741 { 6742 int rc; 6743 struct pqi_ctrl_info *ctrl_info; 6744 struct pqi_config_table_firmware_features *firmware_features; 6745 void __iomem *firmware_features_iomem_addr; 6746 unsigned int i; 6747 unsigned int num_features_supported; 6748 6749 ctrl_info = section_info->ctrl_info; 6750 firmware_features = section_info->section; 6751 firmware_features_iomem_addr = section_info->section_iomem_addr; 6752 6753 for (i = 0, num_features_supported = 0; 6754 i < ARRAY_SIZE(pqi_firmware_features); i++) { 6755 if (pqi_is_firmware_feature_supported(firmware_features, 6756 pqi_firmware_features[i].feature_bit)) { 6757 pqi_firmware_features[i].supported = true; 6758 num_features_supported++; 6759 } else { 6760 pqi_firmware_feature_update(ctrl_info, 6761 &pqi_firmware_features[i]); 6762 } 6763 } 6764 6765 if (num_features_supported == 0) 6766 return; 6767 6768 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6769 if (!pqi_firmware_features[i].supported) 6770 continue; 6771 pqi_request_firmware_feature(firmware_features, 6772 pqi_firmware_features[i].feature_bit); 6773 } 6774 6775 rc = pqi_enable_firmware_features(ctrl_info, firmware_features, 6776 firmware_features_iomem_addr); 6777 if (rc) { 6778 dev_err(&ctrl_info->pci_dev->dev, 6779 "failed to enable firmware features in PQI configuration table\n"); 6780 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6781 if (!pqi_firmware_features[i].supported) 6782 continue; 6783 pqi_firmware_feature_update(ctrl_info, 6784 &pqi_firmware_features[i]); 6785 } 6786 return; 6787 } 6788 6789 ctrl_info->soft_reset_handshake_supported = false; 6790 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6791 if (!pqi_firmware_features[i].supported) 6792 continue; 6793 if (pqi_is_firmware_feature_enabled(firmware_features, 6794 firmware_features_iomem_addr, 6795 pqi_firmware_features[i].feature_bit)) { 6796 pqi_firmware_features[i].enabled = true; 6797 if (pqi_firmware_features[i].feature_bit == 6798 PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE) 6799 ctrl_info->soft_reset_handshake_supported = 6800 true; 6801 } 6802 pqi_firmware_feature_update(ctrl_info, 6803 &pqi_firmware_features[i]); 6804 } 6805 } 6806 6807 static void pqi_init_firmware_features(void) 6808 { 6809 unsigned int i; 6810 6811 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6812 pqi_firmware_features[i].supported = false; 6813 pqi_firmware_features[i].enabled = false; 6814 } 6815 } 6816 6817 static void pqi_process_firmware_features_section( 6818 struct pqi_config_table_section_info *section_info) 6819 { 6820 mutex_lock(&pqi_firmware_features_mutex); 6821 pqi_init_firmware_features(); 6822 pqi_process_firmware_features(section_info); 6823 mutex_unlock(&pqi_firmware_features_mutex); 6824 } 6825 6826 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) 6827 { 6828 u32 table_length; 6829 u32 section_offset; 6830 void __iomem *table_iomem_addr; 6831 struct pqi_config_table *config_table; 6832 struct pqi_config_table_section_header *section; 6833 struct pqi_config_table_section_info section_info; 6834 6835 table_length = ctrl_info->config_table_length; 6836 if (table_length == 0) 6837 return 0; 6838 6839 config_table = kmalloc(table_length, GFP_KERNEL); 6840 if (!config_table) { 6841 dev_err(&ctrl_info->pci_dev->dev, 6842 "failed to allocate memory for PQI configuration table\n"); 6843 return -ENOMEM; 6844 } 6845 6846 /* 6847 * Copy the config table contents from I/O memory space into the 6848 * temporary buffer. 6849 */ 6850 table_iomem_addr = ctrl_info->iomem_base + 6851 ctrl_info->config_table_offset; 6852 memcpy_fromio(config_table, table_iomem_addr, table_length); 6853 6854 section_info.ctrl_info = ctrl_info; 6855 section_offset = 6856 get_unaligned_le32(&config_table->first_section_offset); 6857 6858 while (section_offset) { 6859 section = (void *)config_table + section_offset; 6860 6861 section_info.section = section; 6862 section_info.section_offset = section_offset; 6863 section_info.section_iomem_addr = 6864 table_iomem_addr + section_offset; 6865 6866 switch (get_unaligned_le16(§ion->section_id)) { 6867 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES: 6868 pqi_process_firmware_features_section(§ion_info); 6869 break; 6870 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT: 6871 if (pqi_disable_heartbeat) 6872 dev_warn(&ctrl_info->pci_dev->dev, 6873 "heartbeat disabled by module parameter\n"); 6874 else 6875 ctrl_info->heartbeat_counter = 6876 table_iomem_addr + 6877 section_offset + 6878 offsetof( 6879 struct pqi_config_table_heartbeat, 6880 heartbeat_counter); 6881 break; 6882 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET: 6883 ctrl_info->soft_reset_status = 6884 table_iomem_addr + 6885 section_offset + 6886 offsetof(struct pqi_config_table_soft_reset, 6887 soft_reset_status); 6888 break; 6889 } 6890 6891 section_offset = 6892 get_unaligned_le16(§ion->next_section_offset); 6893 } 6894 6895 kfree(config_table); 6896 6897 return 0; 6898 } 6899 6900 /* Switches the controller from PQI mode back into SIS mode. */ 6901 6902 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info) 6903 { 6904 int rc; 6905 6906 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE); 6907 rc = pqi_reset(ctrl_info); 6908 if (rc) 6909 return rc; 6910 rc = sis_reenable_sis_mode(ctrl_info); 6911 if (rc) { 6912 dev_err(&ctrl_info->pci_dev->dev, 6913 "re-enabling SIS mode failed with error %d\n", rc); 6914 return rc; 6915 } 6916 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 6917 6918 return 0; 6919 } 6920 6921 /* 6922 * If the controller isn't already in SIS mode, this function forces it into 6923 * SIS mode. 6924 */ 6925 6926 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info) 6927 { 6928 if (!sis_is_firmware_running(ctrl_info)) 6929 return -ENXIO; 6930 6931 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE) 6932 return 0; 6933 6934 if (sis_is_kernel_up(ctrl_info)) { 6935 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 6936 return 0; 6937 } 6938 6939 return pqi_revert_to_sis_mode(ctrl_info); 6940 } 6941 6942 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info) 6943 { 6944 int rc; 6945 6946 rc = pqi_force_sis_mode(ctrl_info); 6947 if (rc) 6948 return rc; 6949 6950 /* 6951 * Wait until the controller is ready to start accepting SIS 6952 * commands. 6953 */ 6954 rc = sis_wait_for_ctrl_ready(ctrl_info); 6955 if (rc) 6956 return rc; 6957 6958 /* 6959 * Get the controller properties. This allows us to determine 6960 * whether or not it supports PQI mode. 6961 */ 6962 rc = sis_get_ctrl_properties(ctrl_info); 6963 if (rc) { 6964 dev_err(&ctrl_info->pci_dev->dev, 6965 "error obtaining controller properties\n"); 6966 return rc; 6967 } 6968 6969 rc = sis_get_pqi_capabilities(ctrl_info); 6970 if (rc) { 6971 dev_err(&ctrl_info->pci_dev->dev, 6972 "error obtaining controller capabilities\n"); 6973 return rc; 6974 } 6975 6976 if (reset_devices) { 6977 if (ctrl_info->max_outstanding_requests > 6978 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP) 6979 ctrl_info->max_outstanding_requests = 6980 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP; 6981 } else { 6982 if (ctrl_info->max_outstanding_requests > 6983 PQI_MAX_OUTSTANDING_REQUESTS) 6984 ctrl_info->max_outstanding_requests = 6985 PQI_MAX_OUTSTANDING_REQUESTS; 6986 } 6987 6988 pqi_calculate_io_resources(ctrl_info); 6989 6990 rc = pqi_alloc_error_buffer(ctrl_info); 6991 if (rc) { 6992 dev_err(&ctrl_info->pci_dev->dev, 6993 "failed to allocate PQI error buffer\n"); 6994 return rc; 6995 } 6996 6997 /* 6998 * If the function we are about to call succeeds, the 6999 * controller will transition from legacy SIS mode 7000 * into PQI mode. 7001 */ 7002 rc = sis_init_base_struct_addr(ctrl_info); 7003 if (rc) { 7004 dev_err(&ctrl_info->pci_dev->dev, 7005 "error initializing PQI mode\n"); 7006 return rc; 7007 } 7008 7009 /* Wait for the controller to complete the SIS -> PQI transition. */ 7010 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 7011 if (rc) { 7012 dev_err(&ctrl_info->pci_dev->dev, 7013 "transition to PQI mode failed\n"); 7014 return rc; 7015 } 7016 7017 /* From here on, we are running in PQI mode. */ 7018 ctrl_info->pqi_mode_enabled = true; 7019 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7020 7021 rc = pqi_alloc_admin_queues(ctrl_info); 7022 if (rc) { 7023 dev_err(&ctrl_info->pci_dev->dev, 7024 "failed to allocate admin queues\n"); 7025 return rc; 7026 } 7027 7028 rc = pqi_create_admin_queues(ctrl_info); 7029 if (rc) { 7030 dev_err(&ctrl_info->pci_dev->dev, 7031 "error creating admin queues\n"); 7032 return rc; 7033 } 7034 7035 rc = pqi_report_device_capability(ctrl_info); 7036 if (rc) { 7037 dev_err(&ctrl_info->pci_dev->dev, 7038 "obtaining device capability failed\n"); 7039 return rc; 7040 } 7041 7042 rc = pqi_validate_device_capability(ctrl_info); 7043 if (rc) 7044 return rc; 7045 7046 pqi_calculate_queue_resources(ctrl_info); 7047 7048 rc = pqi_enable_msix_interrupts(ctrl_info); 7049 if (rc) 7050 return rc; 7051 7052 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) { 7053 ctrl_info->max_msix_vectors = 7054 ctrl_info->num_msix_vectors_enabled; 7055 pqi_calculate_queue_resources(ctrl_info); 7056 } 7057 7058 rc = pqi_alloc_io_resources(ctrl_info); 7059 if (rc) 7060 return rc; 7061 7062 rc = pqi_alloc_operational_queues(ctrl_info); 7063 if (rc) { 7064 dev_err(&ctrl_info->pci_dev->dev, 7065 "failed to allocate operational queues\n"); 7066 return rc; 7067 } 7068 7069 pqi_init_operational_queues(ctrl_info); 7070 7071 rc = pqi_request_irqs(ctrl_info); 7072 if (rc) 7073 return rc; 7074 7075 rc = pqi_create_queues(ctrl_info); 7076 if (rc) 7077 return rc; 7078 7079 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 7080 7081 ctrl_info->controller_online = true; 7082 7083 rc = pqi_process_config_table(ctrl_info); 7084 if (rc) 7085 return rc; 7086 7087 pqi_start_heartbeat_timer(ctrl_info); 7088 7089 rc = pqi_enable_events(ctrl_info); 7090 if (rc) { 7091 dev_err(&ctrl_info->pci_dev->dev, 7092 "error enabling events\n"); 7093 return rc; 7094 } 7095 7096 /* Register with the SCSI subsystem. */ 7097 rc = pqi_register_scsi(ctrl_info); 7098 if (rc) 7099 return rc; 7100 7101 rc = pqi_get_ctrl_firmware_version(ctrl_info); 7102 if (rc) { 7103 dev_err(&ctrl_info->pci_dev->dev, 7104 "error obtaining firmware version\n"); 7105 return rc; 7106 } 7107 7108 rc = pqi_set_diag_rescan(ctrl_info); 7109 if (rc) { 7110 dev_err(&ctrl_info->pci_dev->dev, 7111 "error enabling multi-lun rescan\n"); 7112 return rc; 7113 } 7114 7115 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 7116 if (rc) { 7117 dev_err(&ctrl_info->pci_dev->dev, 7118 "error updating host wellness\n"); 7119 return rc; 7120 } 7121 7122 pqi_schedule_update_time_worker(ctrl_info); 7123 7124 pqi_scan_scsi_devices(ctrl_info); 7125 7126 return 0; 7127 } 7128 7129 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info) 7130 { 7131 unsigned int i; 7132 struct pqi_admin_queues *admin_queues; 7133 struct pqi_event_queue *event_queue; 7134 7135 admin_queues = &ctrl_info->admin_queues; 7136 admin_queues->iq_pi_copy = 0; 7137 admin_queues->oq_ci_copy = 0; 7138 writel(0, admin_queues->oq_pi); 7139 7140 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 7141 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0; 7142 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0; 7143 ctrl_info->queue_groups[i].oq_ci_copy = 0; 7144 7145 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]); 7146 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]); 7147 writel(0, ctrl_info->queue_groups[i].oq_pi); 7148 } 7149 7150 event_queue = &ctrl_info->event_queue; 7151 writel(0, event_queue->oq_pi); 7152 event_queue->oq_ci_copy = 0; 7153 } 7154 7155 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) 7156 { 7157 int rc; 7158 7159 rc = pqi_force_sis_mode(ctrl_info); 7160 if (rc) 7161 return rc; 7162 7163 /* 7164 * Wait until the controller is ready to start accepting SIS 7165 * commands. 7166 */ 7167 rc = sis_wait_for_ctrl_ready_resume(ctrl_info); 7168 if (rc) 7169 return rc; 7170 7171 /* 7172 * Get the controller properties. This allows us to determine 7173 * whether or not it supports PQI mode. 7174 */ 7175 rc = sis_get_ctrl_properties(ctrl_info); 7176 if (rc) { 7177 dev_err(&ctrl_info->pci_dev->dev, 7178 "error obtaining controller properties\n"); 7179 return rc; 7180 } 7181 7182 rc = sis_get_pqi_capabilities(ctrl_info); 7183 if (rc) { 7184 dev_err(&ctrl_info->pci_dev->dev, 7185 "error obtaining controller capabilities\n"); 7186 return rc; 7187 } 7188 7189 /* 7190 * If the function we are about to call succeeds, the 7191 * controller will transition from legacy SIS mode 7192 * into PQI mode. 7193 */ 7194 rc = sis_init_base_struct_addr(ctrl_info); 7195 if (rc) { 7196 dev_err(&ctrl_info->pci_dev->dev, 7197 "error initializing PQI mode\n"); 7198 return rc; 7199 } 7200 7201 /* Wait for the controller to complete the SIS -> PQI transition. */ 7202 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 7203 if (rc) { 7204 dev_err(&ctrl_info->pci_dev->dev, 7205 "transition to PQI mode failed\n"); 7206 return rc; 7207 } 7208 7209 /* From here on, we are running in PQI mode. */ 7210 ctrl_info->pqi_mode_enabled = true; 7211 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7212 7213 pqi_reinit_queues(ctrl_info); 7214 7215 rc = pqi_create_admin_queues(ctrl_info); 7216 if (rc) { 7217 dev_err(&ctrl_info->pci_dev->dev, 7218 "error creating admin queues\n"); 7219 return rc; 7220 } 7221 7222 rc = pqi_create_queues(ctrl_info); 7223 if (rc) 7224 return rc; 7225 7226 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 7227 7228 ctrl_info->controller_online = true; 7229 pqi_ctrl_unblock_requests(ctrl_info); 7230 7231 rc = pqi_process_config_table(ctrl_info); 7232 if (rc) 7233 return rc; 7234 7235 pqi_start_heartbeat_timer(ctrl_info); 7236 7237 rc = pqi_enable_events(ctrl_info); 7238 if (rc) { 7239 dev_err(&ctrl_info->pci_dev->dev, 7240 "error enabling events\n"); 7241 return rc; 7242 } 7243 7244 rc = pqi_get_ctrl_firmware_version(ctrl_info); 7245 if (rc) { 7246 dev_err(&ctrl_info->pci_dev->dev, 7247 "error obtaining firmware version\n"); 7248 return rc; 7249 } 7250 7251 rc = pqi_set_diag_rescan(ctrl_info); 7252 if (rc) { 7253 dev_err(&ctrl_info->pci_dev->dev, 7254 "error enabling multi-lun rescan\n"); 7255 return rc; 7256 } 7257 7258 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 7259 if (rc) { 7260 dev_err(&ctrl_info->pci_dev->dev, 7261 "error updating host wellness\n"); 7262 return rc; 7263 } 7264 7265 pqi_schedule_update_time_worker(ctrl_info); 7266 7267 pqi_scan_scsi_devices(ctrl_info); 7268 7269 return 0; 7270 } 7271 7272 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev, 7273 u16 timeout) 7274 { 7275 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2, 7276 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout); 7277 } 7278 7279 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info) 7280 { 7281 int rc; 7282 u64 mask; 7283 7284 rc = pci_enable_device(ctrl_info->pci_dev); 7285 if (rc) { 7286 dev_err(&ctrl_info->pci_dev->dev, 7287 "failed to enable PCI device\n"); 7288 return rc; 7289 } 7290 7291 if (sizeof(dma_addr_t) > 4) 7292 mask = DMA_BIT_MASK(64); 7293 else 7294 mask = DMA_BIT_MASK(32); 7295 7296 rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask); 7297 if (rc) { 7298 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n"); 7299 goto disable_device; 7300 } 7301 7302 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT); 7303 if (rc) { 7304 dev_err(&ctrl_info->pci_dev->dev, 7305 "failed to obtain PCI resources\n"); 7306 goto disable_device; 7307 } 7308 7309 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start( 7310 ctrl_info->pci_dev, 0), 7311 sizeof(struct pqi_ctrl_registers)); 7312 if (!ctrl_info->iomem_base) { 7313 dev_err(&ctrl_info->pci_dev->dev, 7314 "failed to map memory for controller registers\n"); 7315 rc = -ENOMEM; 7316 goto release_regions; 7317 } 7318 7319 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6 7320 7321 /* Increase the PCIe completion timeout. */ 7322 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev, 7323 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS); 7324 if (rc) { 7325 dev_err(&ctrl_info->pci_dev->dev, 7326 "failed to set PCIe completion timeout\n"); 7327 goto release_regions; 7328 } 7329 7330 /* Enable bus mastering. */ 7331 pci_set_master(ctrl_info->pci_dev); 7332 7333 ctrl_info->registers = ctrl_info->iomem_base; 7334 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers; 7335 7336 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info); 7337 7338 return 0; 7339 7340 release_regions: 7341 pci_release_regions(ctrl_info->pci_dev); 7342 disable_device: 7343 pci_disable_device(ctrl_info->pci_dev); 7344 7345 return rc; 7346 } 7347 7348 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info) 7349 { 7350 iounmap(ctrl_info->iomem_base); 7351 pci_release_regions(ctrl_info->pci_dev); 7352 if (pci_is_enabled(ctrl_info->pci_dev)) 7353 pci_disable_device(ctrl_info->pci_dev); 7354 pci_set_drvdata(ctrl_info->pci_dev, NULL); 7355 } 7356 7357 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node) 7358 { 7359 struct pqi_ctrl_info *ctrl_info; 7360 7361 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info), 7362 GFP_KERNEL, numa_node); 7363 if (!ctrl_info) 7364 return NULL; 7365 7366 mutex_init(&ctrl_info->scan_mutex); 7367 mutex_init(&ctrl_info->lun_reset_mutex); 7368 mutex_init(&ctrl_info->ofa_mutex); 7369 7370 INIT_LIST_HEAD(&ctrl_info->scsi_device_list); 7371 spin_lock_init(&ctrl_info->scsi_device_list_lock); 7372 7373 INIT_WORK(&ctrl_info->event_work, pqi_event_worker); 7374 atomic_set(&ctrl_info->num_interrupts, 0); 7375 7376 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker); 7377 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker); 7378 7379 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0); 7380 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker); 7381 7382 sema_init(&ctrl_info->sync_request_sem, 7383 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS); 7384 init_waitqueue_head(&ctrl_info->block_requests_wait); 7385 7386 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 7387 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock); 7388 INIT_WORK(&ctrl_info->raid_bypass_retry_work, 7389 pqi_raid_bypass_retry_worker); 7390 7391 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1; 7392 ctrl_info->irq_mode = IRQ_MODE_NONE; 7393 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS; 7394 7395 return ctrl_info; 7396 } 7397 7398 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info) 7399 { 7400 kfree(ctrl_info); 7401 } 7402 7403 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info) 7404 { 7405 pqi_free_irqs(ctrl_info); 7406 pqi_disable_msix_interrupts(ctrl_info); 7407 } 7408 7409 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info) 7410 { 7411 pqi_stop_heartbeat_timer(ctrl_info); 7412 pqi_free_interrupts(ctrl_info); 7413 if (ctrl_info->queue_memory_base) 7414 dma_free_coherent(&ctrl_info->pci_dev->dev, 7415 ctrl_info->queue_memory_length, 7416 ctrl_info->queue_memory_base, 7417 ctrl_info->queue_memory_base_dma_handle); 7418 if (ctrl_info->admin_queue_memory_base) 7419 dma_free_coherent(&ctrl_info->pci_dev->dev, 7420 ctrl_info->admin_queue_memory_length, 7421 ctrl_info->admin_queue_memory_base, 7422 ctrl_info->admin_queue_memory_base_dma_handle); 7423 pqi_free_all_io_requests(ctrl_info); 7424 if (ctrl_info->error_buffer) 7425 dma_free_coherent(&ctrl_info->pci_dev->dev, 7426 ctrl_info->error_buffer_length, 7427 ctrl_info->error_buffer, 7428 ctrl_info->error_buffer_dma_handle); 7429 if (ctrl_info->iomem_base) 7430 pqi_cleanup_pci_init(ctrl_info); 7431 pqi_free_ctrl_info(ctrl_info); 7432 } 7433 7434 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info) 7435 { 7436 pqi_cancel_rescan_worker(ctrl_info); 7437 pqi_cancel_update_time_worker(ctrl_info); 7438 pqi_remove_all_scsi_devices(ctrl_info); 7439 pqi_unregister_scsi(ctrl_info); 7440 if (ctrl_info->pqi_mode_enabled) 7441 pqi_revert_to_sis_mode(ctrl_info); 7442 pqi_free_ctrl_resources(ctrl_info); 7443 } 7444 7445 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info) 7446 { 7447 pqi_cancel_update_time_worker(ctrl_info); 7448 pqi_cancel_rescan_worker(ctrl_info); 7449 pqi_wait_until_lun_reset_finished(ctrl_info); 7450 pqi_wait_until_scan_finished(ctrl_info); 7451 pqi_ctrl_ofa_start(ctrl_info); 7452 pqi_ctrl_block_requests(ctrl_info); 7453 pqi_ctrl_wait_until_quiesced(ctrl_info); 7454 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS); 7455 pqi_fail_io_queued_for_all_devices(ctrl_info); 7456 pqi_wait_until_inbound_queues_empty(ctrl_info); 7457 pqi_stop_heartbeat_timer(ctrl_info); 7458 ctrl_info->pqi_mode_enabled = false; 7459 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 7460 } 7461 7462 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info) 7463 { 7464 pqi_ofa_free_host_buffer(ctrl_info); 7465 ctrl_info->pqi_mode_enabled = true; 7466 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7467 ctrl_info->controller_online = true; 7468 pqi_ctrl_unblock_requests(ctrl_info); 7469 pqi_start_heartbeat_timer(ctrl_info); 7470 pqi_schedule_update_time_worker(ctrl_info); 7471 pqi_clear_soft_reset_status(ctrl_info, 7472 PQI_SOFT_RESET_ABORT); 7473 pqi_scan_scsi_devices(ctrl_info); 7474 } 7475 7476 static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, 7477 u32 total_size, u32 chunk_size) 7478 { 7479 u32 sg_count; 7480 u32 size; 7481 int i; 7482 struct pqi_sg_descriptor *mem_descriptor = NULL; 7483 struct device *dev; 7484 struct pqi_ofa_memory *ofap; 7485 7486 dev = &ctrl_info->pci_dev->dev; 7487 7488 sg_count = (total_size + chunk_size - 1); 7489 sg_count /= chunk_size; 7490 7491 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7492 7493 if (sg_count*chunk_size < total_size) 7494 goto out; 7495 7496 ctrl_info->pqi_ofa_chunk_virt_addr = 7497 kcalloc(sg_count, sizeof(void *), GFP_KERNEL); 7498 if (!ctrl_info->pqi_ofa_chunk_virt_addr) 7499 goto out; 7500 7501 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) { 7502 dma_addr_t dma_handle; 7503 7504 ctrl_info->pqi_ofa_chunk_virt_addr[i] = 7505 dma_alloc_coherent(dev, chunk_size, &dma_handle, 7506 GFP_KERNEL); 7507 7508 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i]) 7509 break; 7510 7511 mem_descriptor = &ofap->sg_descriptor[i]; 7512 put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address); 7513 put_unaligned_le32 (chunk_size, &mem_descriptor->length); 7514 } 7515 7516 if (!size || size < total_size) 7517 goto out_free_chunks; 7518 7519 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags); 7520 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors); 7521 put_unaligned_le32(size, &ofap->bytes_allocated); 7522 7523 return 0; 7524 7525 out_free_chunks: 7526 while (--i >= 0) { 7527 mem_descriptor = &ofap->sg_descriptor[i]; 7528 dma_free_coherent(dev, chunk_size, 7529 ctrl_info->pqi_ofa_chunk_virt_addr[i], 7530 get_unaligned_le64(&mem_descriptor->address)); 7531 } 7532 kfree(ctrl_info->pqi_ofa_chunk_virt_addr); 7533 7534 out: 7535 put_unaligned_le32 (0, &ofap->bytes_allocated); 7536 return -ENOMEM; 7537 } 7538 7539 static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info) 7540 { 7541 u32 total_size; 7542 u32 min_chunk_size; 7543 u32 chunk_sz; 7544 7545 total_size = le32_to_cpu( 7546 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated); 7547 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS; 7548 7549 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2) 7550 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz)) 7551 return 0; 7552 7553 return -ENOMEM; 7554 } 7555 7556 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, 7557 u32 bytes_requested) 7558 { 7559 struct pqi_ofa_memory *pqi_ofa_memory; 7560 struct device *dev; 7561 7562 dev = &ctrl_info->pci_dev->dev; 7563 pqi_ofa_memory = dma_alloc_coherent(dev, 7564 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, 7565 &ctrl_info->pqi_ofa_mem_dma_handle, 7566 GFP_KERNEL); 7567 7568 if (!pqi_ofa_memory) 7569 return; 7570 7571 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version); 7572 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE, 7573 sizeof(pqi_ofa_memory->signature)); 7574 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested); 7575 7576 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory; 7577 7578 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) { 7579 dev_err(dev, "Failed to allocate host buffer of size = %u", 7580 bytes_requested); 7581 } 7582 } 7583 7584 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info) 7585 { 7586 int i; 7587 struct pqi_sg_descriptor *mem_descriptor; 7588 struct pqi_ofa_memory *ofap; 7589 7590 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7591 7592 if (!ofap) 7593 return; 7594 7595 if (!ofap->bytes_allocated) 7596 goto out; 7597 7598 mem_descriptor = ofap->sg_descriptor; 7599 7600 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors); 7601 i++) { 7602 dma_free_coherent(&ctrl_info->pci_dev->dev, 7603 get_unaligned_le32(&mem_descriptor[i].length), 7604 ctrl_info->pqi_ofa_chunk_virt_addr[i], 7605 get_unaligned_le64(&mem_descriptor[i].address)); 7606 } 7607 kfree(ctrl_info->pqi_ofa_chunk_virt_addr); 7608 7609 out: 7610 dma_free_coherent(&ctrl_info->pci_dev->dev, 7611 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap, 7612 ctrl_info->pqi_ofa_mem_dma_handle); 7613 ctrl_info->pqi_ofa_mem_virt_addr = NULL; 7614 } 7615 7616 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info) 7617 { 7618 struct pqi_vendor_general_request request; 7619 size_t size; 7620 struct pqi_ofa_memory *ofap; 7621 7622 memset(&request, 0, sizeof(request)); 7623 7624 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7625 7626 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; 7627 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 7628 &request.header.iu_length); 7629 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE, 7630 &request.function_code); 7631 7632 if (ofap) { 7633 size = offsetof(struct pqi_ofa_memory, sg_descriptor) + 7634 get_unaligned_le16(&ofap->num_memory_descriptors) * 7635 sizeof(struct pqi_sg_descriptor); 7636 7637 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle, 7638 &request.data.ofa_memory_allocation.buffer_address); 7639 put_unaligned_le32(size, 7640 &request.data.ofa_memory_allocation.buffer_length); 7641 7642 } 7643 7644 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 7645 0, NULL, NO_TIMEOUT); 7646 } 7647 7648 #define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000 7649 7650 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info) 7651 { 7652 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); 7653 return pqi_ctrl_init_resume(ctrl_info); 7654 } 7655 7656 static void pqi_perform_lockup_action(void) 7657 { 7658 switch (pqi_lockup_action) { 7659 case PANIC: 7660 panic("FATAL: Smart Family Controller lockup detected"); 7661 break; 7662 case REBOOT: 7663 emergency_restart(); 7664 break; 7665 case NONE: 7666 default: 7667 break; 7668 } 7669 } 7670 7671 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = { 7672 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR, 7673 .status = SAM_STAT_CHECK_CONDITION, 7674 }; 7675 7676 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info) 7677 { 7678 unsigned int i; 7679 struct pqi_io_request *io_request; 7680 struct scsi_cmnd *scmd; 7681 7682 for (i = 0; i < ctrl_info->max_io_slots; i++) { 7683 io_request = &ctrl_info->io_request_pool[i]; 7684 if (atomic_read(&io_request->refcount) == 0) 7685 continue; 7686 7687 scmd = io_request->scmd; 7688 if (scmd) { 7689 set_host_byte(scmd, DID_NO_CONNECT); 7690 } else { 7691 io_request->status = -ENXIO; 7692 io_request->error_info = 7693 &pqi_ctrl_offline_raid_error_info; 7694 } 7695 7696 io_request->io_complete_callback(io_request, 7697 io_request->context); 7698 } 7699 } 7700 7701 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info) 7702 { 7703 pqi_perform_lockup_action(); 7704 pqi_stop_heartbeat_timer(ctrl_info); 7705 pqi_free_interrupts(ctrl_info); 7706 pqi_cancel_rescan_worker(ctrl_info); 7707 pqi_cancel_update_time_worker(ctrl_info); 7708 pqi_ctrl_wait_until_quiesced(ctrl_info); 7709 pqi_fail_all_outstanding_requests(ctrl_info); 7710 pqi_clear_all_queued_raid_bypass_retries(ctrl_info); 7711 pqi_ctrl_unblock_requests(ctrl_info); 7712 } 7713 7714 static void pqi_ctrl_offline_worker(struct work_struct *work) 7715 { 7716 struct pqi_ctrl_info *ctrl_info; 7717 7718 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work); 7719 pqi_take_ctrl_offline_deferred(ctrl_info); 7720 } 7721 7722 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info) 7723 { 7724 if (!ctrl_info->controller_online) 7725 return; 7726 7727 ctrl_info->controller_online = false; 7728 ctrl_info->pqi_mode_enabled = false; 7729 pqi_ctrl_block_requests(ctrl_info); 7730 if (!pqi_disable_ctrl_shutdown) 7731 sis_shutdown_ctrl(ctrl_info); 7732 pci_disable_device(ctrl_info->pci_dev); 7733 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n"); 7734 schedule_work(&ctrl_info->ctrl_offline_work); 7735 } 7736 7737 static void pqi_print_ctrl_info(struct pci_dev *pci_dev, 7738 const struct pci_device_id *id) 7739 { 7740 char *ctrl_description; 7741 7742 if (id->driver_data) 7743 ctrl_description = (char *)id->driver_data; 7744 else 7745 ctrl_description = "Microsemi Smart Family Controller"; 7746 7747 dev_info(&pci_dev->dev, "%s found\n", ctrl_description); 7748 } 7749 7750 static int pqi_pci_probe(struct pci_dev *pci_dev, 7751 const struct pci_device_id *id) 7752 { 7753 int rc; 7754 int node, cp_node; 7755 struct pqi_ctrl_info *ctrl_info; 7756 7757 pqi_print_ctrl_info(pci_dev, id); 7758 7759 if (pqi_disable_device_id_wildcards && 7760 id->subvendor == PCI_ANY_ID && 7761 id->subdevice == PCI_ANY_ID) { 7762 dev_warn(&pci_dev->dev, 7763 "controller not probed because device ID wildcards are disabled\n"); 7764 return -ENODEV; 7765 } 7766 7767 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID) 7768 dev_warn(&pci_dev->dev, 7769 "controller device ID matched using wildcards\n"); 7770 7771 node = dev_to_node(&pci_dev->dev); 7772 if (node == NUMA_NO_NODE) { 7773 cp_node = cpu_to_node(0); 7774 if (cp_node == NUMA_NO_NODE) 7775 cp_node = 0; 7776 set_dev_node(&pci_dev->dev, cp_node); 7777 } 7778 7779 ctrl_info = pqi_alloc_ctrl_info(node); 7780 if (!ctrl_info) { 7781 dev_err(&pci_dev->dev, 7782 "failed to allocate controller info block\n"); 7783 return -ENOMEM; 7784 } 7785 7786 ctrl_info->pci_dev = pci_dev; 7787 7788 rc = pqi_pci_init(ctrl_info); 7789 if (rc) 7790 goto error; 7791 7792 rc = pqi_ctrl_init(ctrl_info); 7793 if (rc) 7794 goto error; 7795 7796 return 0; 7797 7798 error: 7799 pqi_remove_ctrl(ctrl_info); 7800 7801 return rc; 7802 } 7803 7804 static void pqi_pci_remove(struct pci_dev *pci_dev) 7805 { 7806 struct pqi_ctrl_info *ctrl_info; 7807 7808 ctrl_info = pci_get_drvdata(pci_dev); 7809 if (!ctrl_info) 7810 return; 7811 7812 ctrl_info->in_shutdown = true; 7813 7814 pqi_remove_ctrl(ctrl_info); 7815 } 7816 7817 static void pqi_shutdown(struct pci_dev *pci_dev) 7818 { 7819 int rc; 7820 struct pqi_ctrl_info *ctrl_info; 7821 7822 ctrl_info = pci_get_drvdata(pci_dev); 7823 if (!ctrl_info) 7824 goto error; 7825 7826 /* 7827 * Write all data in the controller's battery-backed cache to 7828 * storage. 7829 */ 7830 rc = pqi_flush_cache(ctrl_info, SHUTDOWN); 7831 pqi_free_interrupts(ctrl_info); 7832 pqi_reset(ctrl_info); 7833 if (rc == 0) 7834 return; 7835 7836 error: 7837 dev_warn(&pci_dev->dev, 7838 "unable to flush controller cache\n"); 7839 } 7840 7841 static void pqi_process_lockup_action_param(void) 7842 { 7843 unsigned int i; 7844 7845 if (!pqi_lockup_action_param) 7846 return; 7847 7848 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 7849 if (strcmp(pqi_lockup_action_param, 7850 pqi_lockup_actions[i].name) == 0) { 7851 pqi_lockup_action = pqi_lockup_actions[i].action; 7852 return; 7853 } 7854 } 7855 7856 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n", 7857 DRIVER_NAME_SHORT, pqi_lockup_action_param); 7858 } 7859 7860 static void pqi_process_module_params(void) 7861 { 7862 pqi_process_lockup_action_param(); 7863 } 7864 7865 static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state) 7866 { 7867 struct pqi_ctrl_info *ctrl_info; 7868 7869 ctrl_info = pci_get_drvdata(pci_dev); 7870 7871 pqi_disable_events(ctrl_info); 7872 pqi_cancel_update_time_worker(ctrl_info); 7873 pqi_cancel_rescan_worker(ctrl_info); 7874 pqi_wait_until_scan_finished(ctrl_info); 7875 pqi_wait_until_lun_reset_finished(ctrl_info); 7876 pqi_wait_until_ofa_finished(ctrl_info); 7877 pqi_flush_cache(ctrl_info, SUSPEND); 7878 pqi_ctrl_block_requests(ctrl_info); 7879 pqi_ctrl_wait_until_quiesced(ctrl_info); 7880 pqi_wait_until_inbound_queues_empty(ctrl_info); 7881 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); 7882 pqi_stop_heartbeat_timer(ctrl_info); 7883 7884 if (state.event == PM_EVENT_FREEZE) 7885 return 0; 7886 7887 pci_save_state(pci_dev); 7888 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)); 7889 7890 ctrl_info->controller_online = false; 7891 ctrl_info->pqi_mode_enabled = false; 7892 7893 return 0; 7894 } 7895 7896 static __maybe_unused int pqi_resume(struct pci_dev *pci_dev) 7897 { 7898 int rc; 7899 struct pqi_ctrl_info *ctrl_info; 7900 7901 ctrl_info = pci_get_drvdata(pci_dev); 7902 7903 if (pci_dev->current_state != PCI_D0) { 7904 ctrl_info->max_hw_queue_index = 0; 7905 pqi_free_interrupts(ctrl_info); 7906 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX); 7907 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler, 7908 IRQF_SHARED, DRIVER_NAME_SHORT, 7909 &ctrl_info->queue_groups[0]); 7910 if (rc) { 7911 dev_err(&ctrl_info->pci_dev->dev, 7912 "irq %u init failed with error %d\n", 7913 pci_dev->irq, rc); 7914 return rc; 7915 } 7916 pqi_start_heartbeat_timer(ctrl_info); 7917 pqi_ctrl_unblock_requests(ctrl_info); 7918 return 0; 7919 } 7920 7921 pci_set_power_state(pci_dev, PCI_D0); 7922 pci_restore_state(pci_dev); 7923 7924 return pqi_ctrl_init_resume(ctrl_info); 7925 } 7926 7927 /* Define the PCI IDs for the controllers that we support. */ 7928 static const struct pci_device_id pqi_pci_id_table[] = { 7929 { 7930 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7931 0x105b, 0x1211) 7932 }, 7933 { 7934 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7935 0x105b, 0x1321) 7936 }, 7937 { 7938 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7939 0x152d, 0x8a22) 7940 }, 7941 { 7942 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7943 0x152d, 0x8a23) 7944 }, 7945 { 7946 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7947 0x152d, 0x8a24) 7948 }, 7949 { 7950 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7951 0x152d, 0x8a36) 7952 }, 7953 { 7954 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7955 0x152d, 0x8a37) 7956 }, 7957 { 7958 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7959 0x193d, 0x1104) 7960 }, 7961 { 7962 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7963 0x193d, 0x1105) 7964 }, 7965 { 7966 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7967 0x193d, 0x1106) 7968 }, 7969 { 7970 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7971 0x193d, 0x1107) 7972 }, 7973 { 7974 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7975 0x193d, 0x8460) 7976 }, 7977 { 7978 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7979 0x193d, 0x8461) 7980 }, 7981 { 7982 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7983 0x193d, 0xc460) 7984 }, 7985 { 7986 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7987 0x193d, 0xc461) 7988 }, 7989 { 7990 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7991 0x193d, 0xf460) 7992 }, 7993 { 7994 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7995 0x193d, 0xf461) 7996 }, 7997 { 7998 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7999 0x1bd4, 0x0045) 8000 }, 8001 { 8002 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8003 0x1bd4, 0x0046) 8004 }, 8005 { 8006 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8007 0x1bd4, 0x0047) 8008 }, 8009 { 8010 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8011 0x1bd4, 0x0048) 8012 }, 8013 { 8014 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8015 0x1bd4, 0x004a) 8016 }, 8017 { 8018 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8019 0x1bd4, 0x004b) 8020 }, 8021 { 8022 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8023 0x1bd4, 0x004c) 8024 }, 8025 { 8026 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8027 0x19e5, 0xd227) 8028 }, 8029 { 8030 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8031 0x19e5, 0xd228) 8032 }, 8033 { 8034 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8035 0x19e5, 0xd229) 8036 }, 8037 { 8038 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8039 0x19e5, 0xd22a) 8040 }, 8041 { 8042 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8043 0x19e5, 0xd22b) 8044 }, 8045 { 8046 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8047 0x19e5, 0xd22c) 8048 }, 8049 { 8050 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8051 PCI_VENDOR_ID_ADAPTEC2, 0x0110) 8052 }, 8053 { 8054 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8055 PCI_VENDOR_ID_ADAPTEC2, 0x0608) 8056 }, 8057 { 8058 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8059 PCI_VENDOR_ID_ADAPTEC2, 0x0800) 8060 }, 8061 { 8062 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8063 PCI_VENDOR_ID_ADAPTEC2, 0x0801) 8064 }, 8065 { 8066 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8067 PCI_VENDOR_ID_ADAPTEC2, 0x0802) 8068 }, 8069 { 8070 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8071 PCI_VENDOR_ID_ADAPTEC2, 0x0803) 8072 }, 8073 { 8074 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8075 PCI_VENDOR_ID_ADAPTEC2, 0x0804) 8076 }, 8077 { 8078 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8079 PCI_VENDOR_ID_ADAPTEC2, 0x0805) 8080 }, 8081 { 8082 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8083 PCI_VENDOR_ID_ADAPTEC2, 0x0806) 8084 }, 8085 { 8086 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8087 PCI_VENDOR_ID_ADAPTEC2, 0x0807) 8088 }, 8089 { 8090 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8091 PCI_VENDOR_ID_ADAPTEC2, 0x0900) 8092 }, 8093 { 8094 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8095 PCI_VENDOR_ID_ADAPTEC2, 0x0901) 8096 }, 8097 { 8098 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8099 PCI_VENDOR_ID_ADAPTEC2, 0x0902) 8100 }, 8101 { 8102 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8103 PCI_VENDOR_ID_ADAPTEC2, 0x0903) 8104 }, 8105 { 8106 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8107 PCI_VENDOR_ID_ADAPTEC2, 0x0904) 8108 }, 8109 { 8110 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8111 PCI_VENDOR_ID_ADAPTEC2, 0x0905) 8112 }, 8113 { 8114 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8115 PCI_VENDOR_ID_ADAPTEC2, 0x0906) 8116 }, 8117 { 8118 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8119 PCI_VENDOR_ID_ADAPTEC2, 0x0907) 8120 }, 8121 { 8122 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8123 PCI_VENDOR_ID_ADAPTEC2, 0x0908) 8124 }, 8125 { 8126 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8127 PCI_VENDOR_ID_ADAPTEC2, 0x090a) 8128 }, 8129 { 8130 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8131 PCI_VENDOR_ID_ADAPTEC2, 0x1200) 8132 }, 8133 { 8134 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8135 PCI_VENDOR_ID_ADAPTEC2, 0x1201) 8136 }, 8137 { 8138 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8139 PCI_VENDOR_ID_ADAPTEC2, 0x1202) 8140 }, 8141 { 8142 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8143 PCI_VENDOR_ID_ADAPTEC2, 0x1280) 8144 }, 8145 { 8146 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8147 PCI_VENDOR_ID_ADAPTEC2, 0x1281) 8148 }, 8149 { 8150 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8151 PCI_VENDOR_ID_ADAPTEC2, 0x1282) 8152 }, 8153 { 8154 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8155 PCI_VENDOR_ID_ADAPTEC2, 0x1300) 8156 }, 8157 { 8158 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8159 PCI_VENDOR_ID_ADAPTEC2, 0x1301) 8160 }, 8161 { 8162 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8163 PCI_VENDOR_ID_ADAPTEC2, 0x1302) 8164 }, 8165 { 8166 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8167 PCI_VENDOR_ID_ADAPTEC2, 0x1303) 8168 }, 8169 { 8170 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8171 PCI_VENDOR_ID_ADAPTEC2, 0x1380) 8172 }, 8173 { 8174 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8175 PCI_VENDOR_ID_ADVANTECH, 0x8312) 8176 }, 8177 { 8178 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8179 PCI_VENDOR_ID_DELL, 0x1fe0) 8180 }, 8181 { 8182 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8183 PCI_VENDOR_ID_HP, 0x0600) 8184 }, 8185 { 8186 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8187 PCI_VENDOR_ID_HP, 0x0601) 8188 }, 8189 { 8190 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8191 PCI_VENDOR_ID_HP, 0x0602) 8192 }, 8193 { 8194 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8195 PCI_VENDOR_ID_HP, 0x0603) 8196 }, 8197 { 8198 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8199 PCI_VENDOR_ID_HP, 0x0609) 8200 }, 8201 { 8202 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8203 PCI_VENDOR_ID_HP, 0x0650) 8204 }, 8205 { 8206 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8207 PCI_VENDOR_ID_HP, 0x0651) 8208 }, 8209 { 8210 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8211 PCI_VENDOR_ID_HP, 0x0652) 8212 }, 8213 { 8214 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8215 PCI_VENDOR_ID_HP, 0x0653) 8216 }, 8217 { 8218 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8219 PCI_VENDOR_ID_HP, 0x0654) 8220 }, 8221 { 8222 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8223 PCI_VENDOR_ID_HP, 0x0655) 8224 }, 8225 { 8226 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8227 PCI_VENDOR_ID_HP, 0x0700) 8228 }, 8229 { 8230 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8231 PCI_VENDOR_ID_HP, 0x0701) 8232 }, 8233 { 8234 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8235 PCI_VENDOR_ID_HP, 0x1001) 8236 }, 8237 { 8238 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8239 PCI_VENDOR_ID_HP, 0x1100) 8240 }, 8241 { 8242 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8243 PCI_VENDOR_ID_HP, 0x1101) 8244 }, 8245 { 8246 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8247 PCI_ANY_ID, PCI_ANY_ID) 8248 }, 8249 { 0 } 8250 }; 8251 8252 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table); 8253 8254 static struct pci_driver pqi_pci_driver = { 8255 .name = DRIVER_NAME_SHORT, 8256 .id_table = pqi_pci_id_table, 8257 .probe = pqi_pci_probe, 8258 .remove = pqi_pci_remove, 8259 .shutdown = pqi_shutdown, 8260 #if defined(CONFIG_PM) 8261 .suspend = pqi_suspend, 8262 .resume = pqi_resume, 8263 #endif 8264 }; 8265 8266 static int __init pqi_init(void) 8267 { 8268 int rc; 8269 8270 pr_info(DRIVER_NAME "\n"); 8271 8272 pqi_sas_transport_template = 8273 sas_attach_transport(&pqi_sas_transport_functions); 8274 if (!pqi_sas_transport_template) 8275 return -ENODEV; 8276 8277 pqi_process_module_params(); 8278 8279 rc = pci_register_driver(&pqi_pci_driver); 8280 if (rc) 8281 sas_release_transport(pqi_sas_transport_template); 8282 8283 return rc; 8284 } 8285 8286 static void __exit pqi_cleanup(void) 8287 { 8288 pci_unregister_driver(&pqi_pci_driver); 8289 sas_release_transport(pqi_sas_transport_template); 8290 } 8291 8292 module_init(pqi_init); 8293 module_exit(pqi_cleanup); 8294 8295 static void __attribute__((unused)) verify_structures(void) 8296 { 8297 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8298 sis_host_to_ctrl_doorbell) != 0x20); 8299 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8300 sis_interrupt_mask) != 0x34); 8301 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8302 sis_ctrl_to_host_doorbell) != 0x9c); 8303 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8304 sis_ctrl_to_host_doorbell_clear) != 0xa0); 8305 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8306 sis_driver_scratch) != 0xb0); 8307 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8308 sis_firmware_status) != 0xbc); 8309 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8310 sis_mailbox) != 0x1000); 8311 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8312 pqi_registers) != 0x4000); 8313 8314 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8315 iu_type) != 0x0); 8316 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8317 iu_length) != 0x2); 8318 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8319 response_queue_id) != 0x4); 8320 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8321 work_area) != 0x6); 8322 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8); 8323 8324 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8325 status) != 0x0); 8326 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8327 service_response) != 0x1); 8328 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8329 data_present) != 0x2); 8330 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8331 reserved) != 0x3); 8332 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8333 residual_count) != 0x4); 8334 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8335 data_length) != 0x8); 8336 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8337 reserved1) != 0xa); 8338 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8339 data) != 0xc); 8340 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c); 8341 8342 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8343 data_in_result) != 0x0); 8344 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8345 data_out_result) != 0x1); 8346 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8347 reserved) != 0x2); 8348 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8349 status) != 0x5); 8350 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8351 status_qualifier) != 0x6); 8352 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8353 sense_data_length) != 0x8); 8354 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8355 response_data_length) != 0xa); 8356 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8357 data_in_transferred) != 0xc); 8358 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8359 data_out_transferred) != 0x10); 8360 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8361 data) != 0x14); 8362 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114); 8363 8364 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8365 signature) != 0x0); 8366 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8367 function_and_status_code) != 0x8); 8368 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8369 max_admin_iq_elements) != 0x10); 8370 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8371 max_admin_oq_elements) != 0x11); 8372 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8373 admin_iq_element_length) != 0x12); 8374 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8375 admin_oq_element_length) != 0x13); 8376 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8377 max_reset_timeout) != 0x14); 8378 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8379 legacy_intx_status) != 0x18); 8380 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8381 legacy_intx_mask_set) != 0x1c); 8382 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8383 legacy_intx_mask_clear) != 0x20); 8384 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8385 device_status) != 0x40); 8386 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8387 admin_iq_pi_offset) != 0x48); 8388 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8389 admin_oq_ci_offset) != 0x50); 8390 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8391 admin_iq_element_array_addr) != 0x58); 8392 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8393 admin_oq_element_array_addr) != 0x60); 8394 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8395 admin_iq_ci_addr) != 0x68); 8396 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8397 admin_oq_pi_addr) != 0x70); 8398 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8399 admin_iq_num_elements) != 0x78); 8400 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8401 admin_oq_num_elements) != 0x79); 8402 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8403 admin_queue_int_msg_num) != 0x7a); 8404 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8405 device_error) != 0x80); 8406 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8407 error_details) != 0x88); 8408 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8409 device_reset) != 0x90); 8410 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8411 power_action) != 0x94); 8412 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100); 8413 8414 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8415 header.iu_type) != 0); 8416 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8417 header.iu_length) != 2); 8418 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8419 header.work_area) != 6); 8420 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8421 request_id) != 8); 8422 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8423 function_code) != 10); 8424 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8425 data.report_device_capability.buffer_length) != 44); 8426 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8427 data.report_device_capability.sg_descriptor) != 48); 8428 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8429 data.create_operational_iq.queue_id) != 12); 8430 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8431 data.create_operational_iq.element_array_addr) != 16); 8432 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8433 data.create_operational_iq.ci_addr) != 24); 8434 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8435 data.create_operational_iq.num_elements) != 32); 8436 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8437 data.create_operational_iq.element_length) != 34); 8438 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8439 data.create_operational_iq.queue_protocol) != 36); 8440 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8441 data.create_operational_oq.queue_id) != 12); 8442 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8443 data.create_operational_oq.element_array_addr) != 16); 8444 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8445 data.create_operational_oq.pi_addr) != 24); 8446 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8447 data.create_operational_oq.num_elements) != 32); 8448 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8449 data.create_operational_oq.element_length) != 34); 8450 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8451 data.create_operational_oq.queue_protocol) != 36); 8452 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8453 data.create_operational_oq.int_msg_num) != 40); 8454 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8455 data.create_operational_oq.coalescing_count) != 42); 8456 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8457 data.create_operational_oq.min_coalescing_time) != 44); 8458 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8459 data.create_operational_oq.max_coalescing_time) != 48); 8460 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8461 data.delete_operational_queue.queue_id) != 12); 8462 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64); 8463 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 8464 data.create_operational_iq) != 64 - 11); 8465 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 8466 data.create_operational_oq) != 64 - 11); 8467 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 8468 data.delete_operational_queue) != 64 - 11); 8469 8470 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8471 header.iu_type) != 0); 8472 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8473 header.iu_length) != 2); 8474 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8475 header.work_area) != 6); 8476 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8477 request_id) != 8); 8478 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8479 function_code) != 10); 8480 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8481 status) != 11); 8482 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8483 data.create_operational_iq.status_descriptor) != 12); 8484 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8485 data.create_operational_iq.iq_pi_offset) != 16); 8486 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8487 data.create_operational_oq.status_descriptor) != 12); 8488 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8489 data.create_operational_oq.oq_ci_offset) != 16); 8490 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64); 8491 8492 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8493 header.iu_type) != 0); 8494 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8495 header.iu_length) != 2); 8496 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8497 header.response_queue_id) != 4); 8498 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8499 header.work_area) != 6); 8500 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8501 request_id) != 8); 8502 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8503 nexus_id) != 10); 8504 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8505 buffer_length) != 12); 8506 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8507 lun_number) != 16); 8508 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8509 protocol_specific) != 24); 8510 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8511 error_index) != 27); 8512 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8513 cdb) != 32); 8514 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8515 sg_descriptors) != 64); 8516 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) != 8517 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 8518 8519 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8520 header.iu_type) != 0); 8521 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8522 header.iu_length) != 2); 8523 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8524 header.response_queue_id) != 4); 8525 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8526 header.work_area) != 6); 8527 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8528 request_id) != 8); 8529 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8530 nexus_id) != 12); 8531 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8532 buffer_length) != 16); 8533 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8534 data_encryption_key_index) != 22); 8535 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8536 encrypt_tweak_lower) != 24); 8537 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8538 encrypt_tweak_upper) != 28); 8539 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8540 cdb) != 32); 8541 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8542 error_index) != 48); 8543 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8544 num_sg_descriptors) != 50); 8545 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8546 cdb_length) != 51); 8547 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8548 lun_number) != 52); 8549 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8550 sg_descriptors) != 64); 8551 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) != 8552 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 8553 8554 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8555 header.iu_type) != 0); 8556 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8557 header.iu_length) != 2); 8558 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8559 request_id) != 8); 8560 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8561 error_index) != 10); 8562 8563 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8564 header.iu_type) != 0); 8565 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8566 header.iu_length) != 2); 8567 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8568 header.response_queue_id) != 4); 8569 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8570 request_id) != 8); 8571 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8572 data.report_event_configuration.buffer_length) != 12); 8573 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8574 data.report_event_configuration.sg_descriptors) != 16); 8575 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8576 data.set_event_configuration.global_event_oq_id) != 10); 8577 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8578 data.set_event_configuration.buffer_length) != 12); 8579 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8580 data.set_event_configuration.sg_descriptors) != 16); 8581 8582 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 8583 max_inbound_iu_length) != 6); 8584 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 8585 max_outbound_iu_length) != 14); 8586 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16); 8587 8588 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8589 data_length) != 0); 8590 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8591 iq_arbitration_priority_support_bitmask) != 8); 8592 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8593 maximum_aw_a) != 9); 8594 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8595 maximum_aw_b) != 10); 8596 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8597 maximum_aw_c) != 11); 8598 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8599 max_inbound_queues) != 16); 8600 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8601 max_elements_per_iq) != 18); 8602 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8603 max_iq_element_length) != 24); 8604 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8605 min_iq_element_length) != 26); 8606 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8607 max_outbound_queues) != 30); 8608 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8609 max_elements_per_oq) != 32); 8610 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8611 intr_coalescing_time_granularity) != 34); 8612 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8613 max_oq_element_length) != 36); 8614 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8615 min_oq_element_length) != 38); 8616 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8617 iu_layer_descriptors) != 64); 8618 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576); 8619 8620 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 8621 event_type) != 0); 8622 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 8623 oq_id) != 2); 8624 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4); 8625 8626 BUILD_BUG_ON(offsetof(struct pqi_event_config, 8627 num_event_descriptors) != 2); 8628 BUILD_BUG_ON(offsetof(struct pqi_event_config, 8629 descriptors) != 4); 8630 8631 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS != 8632 ARRAY_SIZE(pqi_supported_event_types)); 8633 8634 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8635 header.iu_type) != 0); 8636 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8637 header.iu_length) != 2); 8638 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8639 event_type) != 8); 8640 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8641 event_id) != 10); 8642 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8643 additional_event_id) != 12); 8644 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8645 data) != 16); 8646 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32); 8647 8648 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8649 header.iu_type) != 0); 8650 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8651 header.iu_length) != 2); 8652 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8653 event_type) != 8); 8654 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8655 event_id) != 10); 8656 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8657 additional_event_id) != 12); 8658 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16); 8659 8660 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8661 header.iu_type) != 0); 8662 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8663 header.iu_length) != 2); 8664 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8665 request_id) != 8); 8666 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8667 nexus_id) != 10); 8668 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8669 lun_number) != 16); 8670 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8671 protocol_specific) != 24); 8672 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8673 outbound_queue_id_to_manage) != 26); 8674 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8675 request_id_to_manage) != 28); 8676 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8677 task_management_function) != 30); 8678 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32); 8679 8680 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8681 header.iu_type) != 0); 8682 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8683 header.iu_length) != 2); 8684 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8685 request_id) != 8); 8686 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8687 nexus_id) != 10); 8688 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8689 additional_response_info) != 12); 8690 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8691 response_code) != 15); 8692 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16); 8693 8694 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8695 configured_logical_drive_count) != 0); 8696 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8697 configuration_signature) != 1); 8698 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8699 firmware_version) != 5); 8700 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8701 extended_logical_unit_count) != 154); 8702 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8703 firmware_build_number) != 190); 8704 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8705 controller_mode) != 292); 8706 8707 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8708 phys_bay_in_box) != 115); 8709 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8710 device_type) != 120); 8711 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8712 redundant_path_present_map) != 1736); 8713 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8714 active_path_number) != 1738); 8715 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8716 alternate_paths_phys_connector) != 1739); 8717 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8718 alternate_paths_phys_box_on_port) != 1755); 8719 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8720 current_queue_depth_limit) != 1796); 8721 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560); 8722 8723 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255); 8724 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255); 8725 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH % 8726 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 8727 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH % 8728 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 8729 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560); 8730 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH % 8731 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 8732 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560); 8733 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH % 8734 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 8735 8736 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS); 8737 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= 8738 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP); 8739 } 8740