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 return -ETIMEDOUT; 4051 timeout_msecs -= msecs_blocked; 4052 } 4053 } 4054 4055 pqi_ctrl_busy(ctrl_info); 4056 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs); 4057 if (timeout_msecs == 0) { 4058 pqi_ctrl_unbusy(ctrl_info); 4059 rc = -ETIMEDOUT; 4060 goto out; 4061 } 4062 4063 if (pqi_ctrl_offline(ctrl_info)) { 4064 pqi_ctrl_unbusy(ctrl_info); 4065 rc = -ENXIO; 4066 goto out; 4067 } 4068 4069 io_request = pqi_alloc_io_request(ctrl_info); 4070 4071 put_unaligned_le16(io_request->index, 4072 &(((struct pqi_raid_path_request *)request)->request_id)); 4073 4074 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO) 4075 ((struct pqi_raid_path_request *)request)->error_index = 4076 ((struct pqi_raid_path_request *)request)->request_id; 4077 4078 iu_length = get_unaligned_le16(&request->iu_length) + 4079 PQI_REQUEST_HEADER_LENGTH; 4080 memcpy(io_request->iu, request, iu_length); 4081 4082 io_request->io_complete_callback = pqi_raid_synchronous_complete; 4083 io_request->context = &wait; 4084 4085 pqi_start_io(ctrl_info, 4086 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 4087 io_request); 4088 4089 pqi_ctrl_unbusy(ctrl_info); 4090 4091 if (timeout_msecs == NO_TIMEOUT) { 4092 pqi_wait_for_completion_io(ctrl_info, &wait); 4093 } else { 4094 if (!wait_for_completion_io_timeout(&wait, 4095 msecs_to_jiffies(timeout_msecs))) { 4096 dev_warn(&ctrl_info->pci_dev->dev, 4097 "command timed out\n"); 4098 rc = -ETIMEDOUT; 4099 } 4100 } 4101 4102 if (error_info) { 4103 if (io_request->error_info) 4104 memcpy(error_info, io_request->error_info, 4105 sizeof(*error_info)); 4106 else 4107 memset(error_info, 0, sizeof(*error_info)); 4108 } else if (rc == 0 && io_request->error_info) { 4109 rc = pqi_process_raid_io_error_synchronous( 4110 io_request->error_info); 4111 } 4112 4113 pqi_free_io_request(io_request); 4114 4115 out: 4116 up(&ctrl_info->sync_request_sem); 4117 4118 return rc; 4119 } 4120 4121 static int pqi_validate_admin_response( 4122 struct pqi_general_admin_response *response, u8 expected_function_code) 4123 { 4124 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN) 4125 return -EINVAL; 4126 4127 if (get_unaligned_le16(&response->header.iu_length) != 4128 PQI_GENERAL_ADMIN_IU_LENGTH) 4129 return -EINVAL; 4130 4131 if (response->function_code != expected_function_code) 4132 return -EINVAL; 4133 4134 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) 4135 return -EINVAL; 4136 4137 return 0; 4138 } 4139 4140 static int pqi_submit_admin_request_synchronous( 4141 struct pqi_ctrl_info *ctrl_info, 4142 struct pqi_general_admin_request *request, 4143 struct pqi_general_admin_response *response) 4144 { 4145 int rc; 4146 4147 pqi_submit_admin_request(ctrl_info, request); 4148 4149 rc = pqi_poll_for_admin_response(ctrl_info, response); 4150 4151 if (rc == 0) 4152 rc = pqi_validate_admin_response(response, 4153 request->function_code); 4154 4155 return rc; 4156 } 4157 4158 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info) 4159 { 4160 int rc; 4161 struct pqi_general_admin_request request; 4162 struct pqi_general_admin_response response; 4163 struct pqi_device_capability *capability; 4164 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor; 4165 4166 capability = kmalloc(sizeof(*capability), GFP_KERNEL); 4167 if (!capability) 4168 return -ENOMEM; 4169 4170 memset(&request, 0, sizeof(request)); 4171 4172 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4173 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4174 &request.header.iu_length); 4175 request.function_code = 4176 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY; 4177 put_unaligned_le32(sizeof(*capability), 4178 &request.data.report_device_capability.buffer_length); 4179 4180 rc = pqi_map_single(ctrl_info->pci_dev, 4181 &request.data.report_device_capability.sg_descriptor, 4182 capability, sizeof(*capability), 4183 DMA_FROM_DEVICE); 4184 if (rc) 4185 goto out; 4186 4187 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4188 &response); 4189 4190 pqi_pci_unmap(ctrl_info->pci_dev, 4191 &request.data.report_device_capability.sg_descriptor, 1, 4192 DMA_FROM_DEVICE); 4193 4194 if (rc) 4195 goto out; 4196 4197 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) { 4198 rc = -EIO; 4199 goto out; 4200 } 4201 4202 ctrl_info->max_inbound_queues = 4203 get_unaligned_le16(&capability->max_inbound_queues); 4204 ctrl_info->max_elements_per_iq = 4205 get_unaligned_le16(&capability->max_elements_per_iq); 4206 ctrl_info->max_iq_element_length = 4207 get_unaligned_le16(&capability->max_iq_element_length) 4208 * 16; 4209 ctrl_info->max_outbound_queues = 4210 get_unaligned_le16(&capability->max_outbound_queues); 4211 ctrl_info->max_elements_per_oq = 4212 get_unaligned_le16(&capability->max_elements_per_oq); 4213 ctrl_info->max_oq_element_length = 4214 get_unaligned_le16(&capability->max_oq_element_length) 4215 * 16; 4216 4217 sop_iu_layer_descriptor = 4218 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP]; 4219 4220 ctrl_info->max_inbound_iu_length_per_firmware = 4221 get_unaligned_le16( 4222 &sop_iu_layer_descriptor->max_inbound_iu_length); 4223 ctrl_info->inbound_spanning_supported = 4224 sop_iu_layer_descriptor->inbound_spanning_supported; 4225 ctrl_info->outbound_spanning_supported = 4226 sop_iu_layer_descriptor->outbound_spanning_supported; 4227 4228 out: 4229 kfree(capability); 4230 4231 return rc; 4232 } 4233 4234 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info) 4235 { 4236 if (ctrl_info->max_iq_element_length < 4237 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 4238 dev_err(&ctrl_info->pci_dev->dev, 4239 "max. inbound queue element length of %d is less than the required length of %d\n", 4240 ctrl_info->max_iq_element_length, 4241 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4242 return -EINVAL; 4243 } 4244 4245 if (ctrl_info->max_oq_element_length < 4246 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) { 4247 dev_err(&ctrl_info->pci_dev->dev, 4248 "max. outbound queue element length of %d is less than the required length of %d\n", 4249 ctrl_info->max_oq_element_length, 4250 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH); 4251 return -EINVAL; 4252 } 4253 4254 if (ctrl_info->max_inbound_iu_length_per_firmware < 4255 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) { 4256 dev_err(&ctrl_info->pci_dev->dev, 4257 "max. inbound IU length of %u is less than the min. required length of %d\n", 4258 ctrl_info->max_inbound_iu_length_per_firmware, 4259 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4260 return -EINVAL; 4261 } 4262 4263 if (!ctrl_info->inbound_spanning_supported) { 4264 dev_err(&ctrl_info->pci_dev->dev, 4265 "the controller does not support inbound spanning\n"); 4266 return -EINVAL; 4267 } 4268 4269 if (ctrl_info->outbound_spanning_supported) { 4270 dev_err(&ctrl_info->pci_dev->dev, 4271 "the controller supports outbound spanning but this driver does not\n"); 4272 return -EINVAL; 4273 } 4274 4275 return 0; 4276 } 4277 4278 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info) 4279 { 4280 int rc; 4281 struct pqi_event_queue *event_queue; 4282 struct pqi_general_admin_request request; 4283 struct pqi_general_admin_response response; 4284 4285 event_queue = &ctrl_info->event_queue; 4286 4287 /* 4288 * Create OQ (Outbound Queue - device to host queue) to dedicate 4289 * to events. 4290 */ 4291 memset(&request, 0, sizeof(request)); 4292 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4293 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4294 &request.header.iu_length); 4295 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4296 put_unaligned_le16(event_queue->oq_id, 4297 &request.data.create_operational_oq.queue_id); 4298 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr, 4299 &request.data.create_operational_oq.element_array_addr); 4300 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr, 4301 &request.data.create_operational_oq.pi_addr); 4302 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS, 4303 &request.data.create_operational_oq.num_elements); 4304 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16, 4305 &request.data.create_operational_oq.element_length); 4306 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4307 put_unaligned_le16(event_queue->int_msg_num, 4308 &request.data.create_operational_oq.int_msg_num); 4309 4310 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4311 &response); 4312 if (rc) 4313 return rc; 4314 4315 event_queue->oq_ci = ctrl_info->iomem_base + 4316 PQI_DEVICE_REGISTERS_OFFSET + 4317 get_unaligned_le64( 4318 &response.data.create_operational_oq.oq_ci_offset); 4319 4320 return 0; 4321 } 4322 4323 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info, 4324 unsigned int group_number) 4325 { 4326 int rc; 4327 struct pqi_queue_group *queue_group; 4328 struct pqi_general_admin_request request; 4329 struct pqi_general_admin_response response; 4330 4331 queue_group = &ctrl_info->queue_groups[group_number]; 4332 4333 /* 4334 * Create IQ (Inbound Queue - host to device queue) for 4335 * RAID path. 4336 */ 4337 memset(&request, 0, sizeof(request)); 4338 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4339 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4340 &request.header.iu_length); 4341 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4342 put_unaligned_le16(queue_group->iq_id[RAID_PATH], 4343 &request.data.create_operational_iq.queue_id); 4344 put_unaligned_le64( 4345 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH], 4346 &request.data.create_operational_iq.element_array_addr); 4347 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH], 4348 &request.data.create_operational_iq.ci_addr); 4349 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4350 &request.data.create_operational_iq.num_elements); 4351 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4352 &request.data.create_operational_iq.element_length); 4353 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4354 4355 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4356 &response); 4357 if (rc) { 4358 dev_err(&ctrl_info->pci_dev->dev, 4359 "error creating inbound RAID queue\n"); 4360 return rc; 4361 } 4362 4363 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base + 4364 PQI_DEVICE_REGISTERS_OFFSET + 4365 get_unaligned_le64( 4366 &response.data.create_operational_iq.iq_pi_offset); 4367 4368 /* 4369 * Create IQ (Inbound Queue - host to device queue) for 4370 * Advanced I/O (AIO) path. 4371 */ 4372 memset(&request, 0, sizeof(request)); 4373 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4374 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4375 &request.header.iu_length); 4376 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ; 4377 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4378 &request.data.create_operational_iq.queue_id); 4379 put_unaligned_le64((u64)queue_group-> 4380 iq_element_array_bus_addr[AIO_PATH], 4381 &request.data.create_operational_iq.element_array_addr); 4382 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH], 4383 &request.data.create_operational_iq.ci_addr); 4384 put_unaligned_le16(ctrl_info->num_elements_per_iq, 4385 &request.data.create_operational_iq.num_elements); 4386 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16, 4387 &request.data.create_operational_iq.element_length); 4388 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP; 4389 4390 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4391 &response); 4392 if (rc) { 4393 dev_err(&ctrl_info->pci_dev->dev, 4394 "error creating inbound AIO queue\n"); 4395 return rc; 4396 } 4397 4398 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base + 4399 PQI_DEVICE_REGISTERS_OFFSET + 4400 get_unaligned_le64( 4401 &response.data.create_operational_iq.iq_pi_offset); 4402 4403 /* 4404 * Designate the 2nd IQ as the AIO path. By default, all IQs are 4405 * assumed to be for RAID path I/O unless we change the queue's 4406 * property. 4407 */ 4408 memset(&request, 0, sizeof(request)); 4409 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4410 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4411 &request.header.iu_length); 4412 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY; 4413 put_unaligned_le16(queue_group->iq_id[AIO_PATH], 4414 &request.data.change_operational_iq_properties.queue_id); 4415 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE, 4416 &request.data.change_operational_iq_properties.vendor_specific); 4417 4418 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4419 &response); 4420 if (rc) { 4421 dev_err(&ctrl_info->pci_dev->dev, 4422 "error changing queue property\n"); 4423 return rc; 4424 } 4425 4426 /* 4427 * Create OQ (Outbound Queue - device to host queue). 4428 */ 4429 memset(&request, 0, sizeof(request)); 4430 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN; 4431 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH, 4432 &request.header.iu_length); 4433 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ; 4434 put_unaligned_le16(queue_group->oq_id, 4435 &request.data.create_operational_oq.queue_id); 4436 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr, 4437 &request.data.create_operational_oq.element_array_addr); 4438 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr, 4439 &request.data.create_operational_oq.pi_addr); 4440 put_unaligned_le16(ctrl_info->num_elements_per_oq, 4441 &request.data.create_operational_oq.num_elements); 4442 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16, 4443 &request.data.create_operational_oq.element_length); 4444 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP; 4445 put_unaligned_le16(queue_group->int_msg_num, 4446 &request.data.create_operational_oq.int_msg_num); 4447 4448 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, 4449 &response); 4450 if (rc) { 4451 dev_err(&ctrl_info->pci_dev->dev, 4452 "error creating outbound queue\n"); 4453 return rc; 4454 } 4455 4456 queue_group->oq_ci = ctrl_info->iomem_base + 4457 PQI_DEVICE_REGISTERS_OFFSET + 4458 get_unaligned_le64( 4459 &response.data.create_operational_oq.oq_ci_offset); 4460 4461 return 0; 4462 } 4463 4464 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info) 4465 { 4466 int rc; 4467 unsigned int i; 4468 4469 rc = pqi_create_event_queue(ctrl_info); 4470 if (rc) { 4471 dev_err(&ctrl_info->pci_dev->dev, 4472 "error creating event queue\n"); 4473 return rc; 4474 } 4475 4476 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 4477 rc = pqi_create_queue_group(ctrl_info, i); 4478 if (rc) { 4479 dev_err(&ctrl_info->pci_dev->dev, 4480 "error creating queue group number %u/%u\n", 4481 i, ctrl_info->num_queue_groups); 4482 return rc; 4483 } 4484 } 4485 4486 return 0; 4487 } 4488 4489 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \ 4490 (offsetof(struct pqi_event_config, descriptors) + \ 4491 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor))) 4492 4493 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info, 4494 bool enable_events) 4495 { 4496 int rc; 4497 unsigned int i; 4498 struct pqi_event_config *event_config; 4499 struct pqi_event_descriptor *event_descriptor; 4500 struct pqi_general_management_request request; 4501 4502 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4503 GFP_KERNEL); 4504 if (!event_config) 4505 return -ENOMEM; 4506 4507 memset(&request, 0, sizeof(request)); 4508 4509 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG; 4510 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4511 data.report_event_configuration.sg_descriptors[1]) - 4512 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4513 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4514 &request.data.report_event_configuration.buffer_length); 4515 4516 rc = pqi_map_single(ctrl_info->pci_dev, 4517 request.data.report_event_configuration.sg_descriptors, 4518 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4519 DMA_FROM_DEVICE); 4520 if (rc) 4521 goto out; 4522 4523 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 4524 0, NULL, NO_TIMEOUT); 4525 4526 pqi_pci_unmap(ctrl_info->pci_dev, 4527 request.data.report_event_configuration.sg_descriptors, 1, 4528 DMA_FROM_DEVICE); 4529 4530 if (rc) 4531 goto out; 4532 4533 for (i = 0; i < event_config->num_event_descriptors; i++) { 4534 event_descriptor = &event_config->descriptors[i]; 4535 if (enable_events && 4536 pqi_is_supported_event(event_descriptor->event_type)) 4537 put_unaligned_le16(ctrl_info->event_queue.oq_id, 4538 &event_descriptor->oq_id); 4539 else 4540 put_unaligned_le16(0, &event_descriptor->oq_id); 4541 } 4542 4543 memset(&request, 0, sizeof(request)); 4544 4545 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG; 4546 put_unaligned_le16(offsetof(struct pqi_general_management_request, 4547 data.report_event_configuration.sg_descriptors[1]) - 4548 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length); 4549 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4550 &request.data.report_event_configuration.buffer_length); 4551 4552 rc = pqi_map_single(ctrl_info->pci_dev, 4553 request.data.report_event_configuration.sg_descriptors, 4554 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH, 4555 DMA_TO_DEVICE); 4556 if (rc) 4557 goto out; 4558 4559 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, 4560 NULL, NO_TIMEOUT); 4561 4562 pqi_pci_unmap(ctrl_info->pci_dev, 4563 request.data.report_event_configuration.sg_descriptors, 1, 4564 DMA_TO_DEVICE); 4565 4566 out: 4567 kfree(event_config); 4568 4569 return rc; 4570 } 4571 4572 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info) 4573 { 4574 return pqi_configure_events(ctrl_info, true); 4575 } 4576 4577 static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info) 4578 { 4579 return pqi_configure_events(ctrl_info, false); 4580 } 4581 4582 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info) 4583 { 4584 unsigned int i; 4585 struct device *dev; 4586 size_t sg_chain_buffer_length; 4587 struct pqi_io_request *io_request; 4588 4589 if (!ctrl_info->io_request_pool) 4590 return; 4591 4592 dev = &ctrl_info->pci_dev->dev; 4593 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4594 io_request = ctrl_info->io_request_pool; 4595 4596 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4597 kfree(io_request->iu); 4598 if (!io_request->sg_chain_buffer) 4599 break; 4600 dma_free_coherent(dev, sg_chain_buffer_length, 4601 io_request->sg_chain_buffer, 4602 io_request->sg_chain_buffer_dma_handle); 4603 io_request++; 4604 } 4605 4606 kfree(ctrl_info->io_request_pool); 4607 ctrl_info->io_request_pool = NULL; 4608 } 4609 4610 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info) 4611 { 4612 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev, 4613 ctrl_info->error_buffer_length, 4614 &ctrl_info->error_buffer_dma_handle, 4615 GFP_KERNEL); 4616 4617 if (!ctrl_info->error_buffer) 4618 return -ENOMEM; 4619 4620 return 0; 4621 } 4622 4623 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info) 4624 { 4625 unsigned int i; 4626 void *sg_chain_buffer; 4627 size_t sg_chain_buffer_length; 4628 dma_addr_t sg_chain_buffer_dma_handle; 4629 struct device *dev; 4630 struct pqi_io_request *io_request; 4631 4632 ctrl_info->io_request_pool = 4633 kcalloc(ctrl_info->max_io_slots, 4634 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL); 4635 4636 if (!ctrl_info->io_request_pool) { 4637 dev_err(&ctrl_info->pci_dev->dev, 4638 "failed to allocate I/O request pool\n"); 4639 goto error; 4640 } 4641 4642 dev = &ctrl_info->pci_dev->dev; 4643 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length; 4644 io_request = ctrl_info->io_request_pool; 4645 4646 for (i = 0; i < ctrl_info->max_io_slots; i++) { 4647 io_request->iu = 4648 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL); 4649 4650 if (!io_request->iu) { 4651 dev_err(&ctrl_info->pci_dev->dev, 4652 "failed to allocate IU buffers\n"); 4653 goto error; 4654 } 4655 4656 sg_chain_buffer = dma_alloc_coherent(dev, 4657 sg_chain_buffer_length, &sg_chain_buffer_dma_handle, 4658 GFP_KERNEL); 4659 4660 if (!sg_chain_buffer) { 4661 dev_err(&ctrl_info->pci_dev->dev, 4662 "failed to allocate PQI scatter-gather chain buffers\n"); 4663 goto error; 4664 } 4665 4666 io_request->index = i; 4667 io_request->sg_chain_buffer = sg_chain_buffer; 4668 io_request->sg_chain_buffer_dma_handle = 4669 sg_chain_buffer_dma_handle; 4670 io_request++; 4671 } 4672 4673 return 0; 4674 4675 error: 4676 pqi_free_all_io_requests(ctrl_info); 4677 4678 return -ENOMEM; 4679 } 4680 4681 /* 4682 * Calculate required resources that are sized based on max. outstanding 4683 * requests and max. transfer size. 4684 */ 4685 4686 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info) 4687 { 4688 u32 max_transfer_size; 4689 u32 max_sg_entries; 4690 4691 ctrl_info->scsi_ml_can_queue = 4692 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS; 4693 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests; 4694 4695 ctrl_info->error_buffer_length = 4696 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH; 4697 4698 if (reset_devices) 4699 max_transfer_size = min(ctrl_info->max_transfer_size, 4700 PQI_MAX_TRANSFER_SIZE_KDUMP); 4701 else 4702 max_transfer_size = min(ctrl_info->max_transfer_size, 4703 PQI_MAX_TRANSFER_SIZE); 4704 4705 max_sg_entries = max_transfer_size / PAGE_SIZE; 4706 4707 /* +1 to cover when the buffer is not page-aligned. */ 4708 max_sg_entries++; 4709 4710 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries); 4711 4712 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE; 4713 4714 ctrl_info->sg_chain_buffer_length = 4715 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) + 4716 PQI_EXTRA_SGL_MEMORY; 4717 ctrl_info->sg_tablesize = max_sg_entries; 4718 ctrl_info->max_sectors = max_transfer_size / 512; 4719 } 4720 4721 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info) 4722 { 4723 int num_queue_groups; 4724 u16 num_elements_per_iq; 4725 u16 num_elements_per_oq; 4726 4727 if (reset_devices) { 4728 num_queue_groups = 1; 4729 } else { 4730 int num_cpus; 4731 int max_queue_groups; 4732 4733 max_queue_groups = min(ctrl_info->max_inbound_queues / 2, 4734 ctrl_info->max_outbound_queues - 1); 4735 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS); 4736 4737 num_cpus = num_online_cpus(); 4738 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors); 4739 num_queue_groups = min(num_queue_groups, max_queue_groups); 4740 } 4741 4742 ctrl_info->num_queue_groups = num_queue_groups; 4743 ctrl_info->max_hw_queue_index = num_queue_groups - 1; 4744 4745 /* 4746 * Make sure that the max. inbound IU length is an even multiple 4747 * of our inbound element length. 4748 */ 4749 ctrl_info->max_inbound_iu_length = 4750 (ctrl_info->max_inbound_iu_length_per_firmware / 4751 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) * 4752 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH; 4753 4754 num_elements_per_iq = 4755 (ctrl_info->max_inbound_iu_length / 4756 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 4757 4758 /* Add one because one element in each queue is unusable. */ 4759 num_elements_per_iq++; 4760 4761 num_elements_per_iq = min(num_elements_per_iq, 4762 ctrl_info->max_elements_per_iq); 4763 4764 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1; 4765 num_elements_per_oq = min(num_elements_per_oq, 4766 ctrl_info->max_elements_per_oq); 4767 4768 ctrl_info->num_elements_per_iq = num_elements_per_iq; 4769 ctrl_info->num_elements_per_oq = num_elements_per_oq; 4770 4771 ctrl_info->max_sg_per_iu = 4772 ((ctrl_info->max_inbound_iu_length - 4773 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) / 4774 sizeof(struct pqi_sg_descriptor)) + 4775 PQI_MAX_EMBEDDED_SG_DESCRIPTORS; 4776 } 4777 4778 static inline void pqi_set_sg_descriptor( 4779 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg) 4780 { 4781 u64 address = (u64)sg_dma_address(sg); 4782 unsigned int length = sg_dma_len(sg); 4783 4784 put_unaligned_le64(address, &sg_descriptor->address); 4785 put_unaligned_le32(length, &sg_descriptor->length); 4786 put_unaligned_le32(0, &sg_descriptor->flags); 4787 } 4788 4789 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info, 4790 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd, 4791 struct pqi_io_request *io_request) 4792 { 4793 int i; 4794 u16 iu_length; 4795 int sg_count; 4796 bool chained; 4797 unsigned int num_sg_in_iu; 4798 unsigned int max_sg_per_iu; 4799 struct scatterlist *sg; 4800 struct pqi_sg_descriptor *sg_descriptor; 4801 4802 sg_count = scsi_dma_map(scmd); 4803 if (sg_count < 0) 4804 return sg_count; 4805 4806 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 4807 PQI_REQUEST_HEADER_LENGTH; 4808 4809 if (sg_count == 0) 4810 goto out; 4811 4812 sg = scsi_sglist(scmd); 4813 sg_descriptor = request->sg_descriptors; 4814 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4815 chained = false; 4816 num_sg_in_iu = 0; 4817 i = 0; 4818 4819 while (1) { 4820 pqi_set_sg_descriptor(sg_descriptor, sg); 4821 if (!chained) 4822 num_sg_in_iu++; 4823 i++; 4824 if (i == sg_count) 4825 break; 4826 sg_descriptor++; 4827 if (i == max_sg_per_iu) { 4828 put_unaligned_le64( 4829 (u64)io_request->sg_chain_buffer_dma_handle, 4830 &sg_descriptor->address); 4831 put_unaligned_le32((sg_count - num_sg_in_iu) 4832 * sizeof(*sg_descriptor), 4833 &sg_descriptor->length); 4834 put_unaligned_le32(CISS_SG_CHAIN, 4835 &sg_descriptor->flags); 4836 chained = true; 4837 num_sg_in_iu++; 4838 sg_descriptor = io_request->sg_chain_buffer; 4839 } 4840 sg = sg_next(sg); 4841 } 4842 4843 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4844 request->partial = chained; 4845 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4846 4847 out: 4848 put_unaligned_le16(iu_length, &request->header.iu_length); 4849 4850 return 0; 4851 } 4852 4853 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info, 4854 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd, 4855 struct pqi_io_request *io_request) 4856 { 4857 int i; 4858 u16 iu_length; 4859 int sg_count; 4860 bool chained; 4861 unsigned int num_sg_in_iu; 4862 unsigned int max_sg_per_iu; 4863 struct scatterlist *sg; 4864 struct pqi_sg_descriptor *sg_descriptor; 4865 4866 sg_count = scsi_dma_map(scmd); 4867 if (sg_count < 0) 4868 return sg_count; 4869 4870 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) - 4871 PQI_REQUEST_HEADER_LENGTH; 4872 num_sg_in_iu = 0; 4873 4874 if (sg_count == 0) 4875 goto out; 4876 4877 sg = scsi_sglist(scmd); 4878 sg_descriptor = request->sg_descriptors; 4879 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1; 4880 chained = false; 4881 i = 0; 4882 4883 while (1) { 4884 pqi_set_sg_descriptor(sg_descriptor, sg); 4885 if (!chained) 4886 num_sg_in_iu++; 4887 i++; 4888 if (i == sg_count) 4889 break; 4890 sg_descriptor++; 4891 if (i == max_sg_per_iu) { 4892 put_unaligned_le64( 4893 (u64)io_request->sg_chain_buffer_dma_handle, 4894 &sg_descriptor->address); 4895 put_unaligned_le32((sg_count - num_sg_in_iu) 4896 * sizeof(*sg_descriptor), 4897 &sg_descriptor->length); 4898 put_unaligned_le32(CISS_SG_CHAIN, 4899 &sg_descriptor->flags); 4900 chained = true; 4901 num_sg_in_iu++; 4902 sg_descriptor = io_request->sg_chain_buffer; 4903 } 4904 sg = sg_next(sg); 4905 } 4906 4907 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags); 4908 request->partial = chained; 4909 iu_length += num_sg_in_iu * sizeof(*sg_descriptor); 4910 4911 out: 4912 put_unaligned_le16(iu_length, &request->header.iu_length); 4913 request->num_sg_descriptors = num_sg_in_iu; 4914 4915 return 0; 4916 } 4917 4918 static void pqi_raid_io_complete(struct pqi_io_request *io_request, 4919 void *context) 4920 { 4921 struct scsi_cmnd *scmd; 4922 4923 scmd = io_request->scmd; 4924 pqi_free_io_request(io_request); 4925 scsi_dma_unmap(scmd); 4926 pqi_scsi_done(scmd); 4927 } 4928 4929 static int pqi_raid_submit_scsi_cmd_with_io_request( 4930 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request, 4931 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 4932 struct pqi_queue_group *queue_group) 4933 { 4934 int rc; 4935 size_t cdb_length; 4936 struct pqi_raid_path_request *request; 4937 4938 io_request->io_complete_callback = pqi_raid_io_complete; 4939 io_request->scmd = scmd; 4940 4941 request = io_request->iu; 4942 memset(request, 0, 4943 offsetof(struct pqi_raid_path_request, sg_descriptors)); 4944 4945 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 4946 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 4947 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 4948 put_unaligned_le16(io_request->index, &request->request_id); 4949 request->error_index = request->request_id; 4950 memcpy(request->lun_number, device->scsi3addr, 4951 sizeof(request->lun_number)); 4952 4953 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb)); 4954 memcpy(request->cdb, scmd->cmnd, cdb_length); 4955 4956 switch (cdb_length) { 4957 case 6: 4958 case 10: 4959 case 12: 4960 case 16: 4961 /* No bytes in the Additional CDB bytes field */ 4962 request->additional_cdb_bytes_usage = 4963 SOP_ADDITIONAL_CDB_BYTES_0; 4964 break; 4965 case 20: 4966 /* 4 bytes in the Additional cdb field */ 4967 request->additional_cdb_bytes_usage = 4968 SOP_ADDITIONAL_CDB_BYTES_4; 4969 break; 4970 case 24: 4971 /* 8 bytes in the Additional cdb field */ 4972 request->additional_cdb_bytes_usage = 4973 SOP_ADDITIONAL_CDB_BYTES_8; 4974 break; 4975 case 28: 4976 /* 12 bytes in the Additional cdb field */ 4977 request->additional_cdb_bytes_usage = 4978 SOP_ADDITIONAL_CDB_BYTES_12; 4979 break; 4980 case 32: 4981 default: 4982 /* 16 bytes in the Additional cdb field */ 4983 request->additional_cdb_bytes_usage = 4984 SOP_ADDITIONAL_CDB_BYTES_16; 4985 break; 4986 } 4987 4988 switch (scmd->sc_data_direction) { 4989 case DMA_TO_DEVICE: 4990 request->data_direction = SOP_READ_FLAG; 4991 break; 4992 case DMA_FROM_DEVICE: 4993 request->data_direction = SOP_WRITE_FLAG; 4994 break; 4995 case DMA_NONE: 4996 request->data_direction = SOP_NO_DIRECTION_FLAG; 4997 break; 4998 case DMA_BIDIRECTIONAL: 4999 request->data_direction = SOP_BIDIRECTIONAL; 5000 break; 5001 default: 5002 dev_err(&ctrl_info->pci_dev->dev, 5003 "unknown data direction: %d\n", 5004 scmd->sc_data_direction); 5005 break; 5006 } 5007 5008 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request); 5009 if (rc) { 5010 pqi_free_io_request(io_request); 5011 return SCSI_MLQUEUE_HOST_BUSY; 5012 } 5013 5014 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request); 5015 5016 return 0; 5017 } 5018 5019 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 5020 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 5021 struct pqi_queue_group *queue_group) 5022 { 5023 struct pqi_io_request *io_request; 5024 5025 io_request = pqi_alloc_io_request(ctrl_info); 5026 5027 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 5028 device, scmd, queue_group); 5029 } 5030 5031 static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info) 5032 { 5033 if (!pqi_ctrl_blocked(ctrl_info)) 5034 schedule_work(&ctrl_info->raid_bypass_retry_work); 5035 } 5036 5037 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request) 5038 { 5039 struct scsi_cmnd *scmd; 5040 struct pqi_scsi_dev *device; 5041 struct pqi_ctrl_info *ctrl_info; 5042 5043 if (!io_request->raid_bypass) 5044 return false; 5045 5046 scmd = io_request->scmd; 5047 if ((scmd->result & 0xff) == SAM_STAT_GOOD) 5048 return false; 5049 if (host_byte(scmd->result) == DID_NO_CONNECT) 5050 return false; 5051 5052 device = scmd->device->hostdata; 5053 if (pqi_device_offline(device)) 5054 return false; 5055 5056 ctrl_info = shost_to_hba(scmd->device->host); 5057 if (pqi_ctrl_offline(ctrl_info)) 5058 return false; 5059 5060 return true; 5061 } 5062 5063 static inline void pqi_add_to_raid_bypass_retry_list( 5064 struct pqi_ctrl_info *ctrl_info, 5065 struct pqi_io_request *io_request, bool at_head) 5066 { 5067 unsigned long flags; 5068 5069 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5070 if (at_head) 5071 list_add(&io_request->request_list_entry, 5072 &ctrl_info->raid_bypass_retry_list); 5073 else 5074 list_add_tail(&io_request->request_list_entry, 5075 &ctrl_info->raid_bypass_retry_list); 5076 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5077 } 5078 5079 static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request, 5080 void *context) 5081 { 5082 struct scsi_cmnd *scmd; 5083 5084 scmd = io_request->scmd; 5085 pqi_free_io_request(io_request); 5086 pqi_scsi_done(scmd); 5087 } 5088 5089 static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request) 5090 { 5091 struct scsi_cmnd *scmd; 5092 struct pqi_ctrl_info *ctrl_info; 5093 5094 io_request->io_complete_callback = pqi_queued_raid_bypass_complete; 5095 scmd = io_request->scmd; 5096 scmd->result = 0; 5097 ctrl_info = shost_to_hba(scmd->device->host); 5098 5099 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false); 5100 pqi_schedule_bypass_retry(ctrl_info); 5101 } 5102 5103 static int pqi_retry_raid_bypass(struct pqi_io_request *io_request) 5104 { 5105 struct scsi_cmnd *scmd; 5106 struct pqi_scsi_dev *device; 5107 struct pqi_ctrl_info *ctrl_info; 5108 struct pqi_queue_group *queue_group; 5109 5110 scmd = io_request->scmd; 5111 device = scmd->device->hostdata; 5112 if (pqi_device_in_reset(device)) { 5113 pqi_free_io_request(io_request); 5114 set_host_byte(scmd, DID_RESET); 5115 pqi_scsi_done(scmd); 5116 return 0; 5117 } 5118 5119 ctrl_info = shost_to_hba(scmd->device->host); 5120 queue_group = io_request->queue_group; 5121 5122 pqi_reinit_io_request(io_request); 5123 5124 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request, 5125 device, scmd, queue_group); 5126 } 5127 5128 static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request( 5129 struct pqi_ctrl_info *ctrl_info) 5130 { 5131 unsigned long flags; 5132 struct pqi_io_request *io_request; 5133 5134 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5135 io_request = list_first_entry_or_null( 5136 &ctrl_info->raid_bypass_retry_list, 5137 struct pqi_io_request, request_list_entry); 5138 if (io_request) 5139 list_del(&io_request->request_list_entry); 5140 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5141 5142 return io_request; 5143 } 5144 5145 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info) 5146 { 5147 int rc; 5148 struct pqi_io_request *io_request; 5149 5150 pqi_ctrl_busy(ctrl_info); 5151 5152 while (1) { 5153 if (pqi_ctrl_blocked(ctrl_info)) 5154 break; 5155 io_request = pqi_next_queued_raid_bypass_request(ctrl_info); 5156 if (!io_request) 5157 break; 5158 rc = pqi_retry_raid_bypass(io_request); 5159 if (rc) { 5160 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, 5161 true); 5162 pqi_schedule_bypass_retry(ctrl_info); 5163 break; 5164 } 5165 } 5166 5167 pqi_ctrl_unbusy(ctrl_info); 5168 } 5169 5170 static void pqi_raid_bypass_retry_worker(struct work_struct *work) 5171 { 5172 struct pqi_ctrl_info *ctrl_info; 5173 5174 ctrl_info = container_of(work, struct pqi_ctrl_info, 5175 raid_bypass_retry_work); 5176 pqi_retry_raid_bypass_requests(ctrl_info); 5177 } 5178 5179 static void pqi_clear_all_queued_raid_bypass_retries( 5180 struct pqi_ctrl_info *ctrl_info) 5181 { 5182 unsigned long flags; 5183 5184 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags); 5185 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 5186 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags); 5187 } 5188 5189 static void pqi_aio_io_complete(struct pqi_io_request *io_request, 5190 void *context) 5191 { 5192 struct scsi_cmnd *scmd; 5193 5194 scmd = io_request->scmd; 5195 scsi_dma_unmap(scmd); 5196 if (io_request->status == -EAGAIN) 5197 set_host_byte(scmd, DID_IMM_RETRY); 5198 else if (pqi_raid_bypass_retry_needed(io_request)) { 5199 pqi_queue_raid_bypass_retry(io_request); 5200 return; 5201 } 5202 pqi_free_io_request(io_request); 5203 pqi_scsi_done(scmd); 5204 } 5205 5206 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info, 5207 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd, 5208 struct pqi_queue_group *queue_group) 5209 { 5210 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle, 5211 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false); 5212 } 5213 5214 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, 5215 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, 5216 unsigned int cdb_length, struct pqi_queue_group *queue_group, 5217 struct pqi_encryption_info *encryption_info, bool raid_bypass) 5218 { 5219 int rc; 5220 struct pqi_io_request *io_request; 5221 struct pqi_aio_path_request *request; 5222 5223 io_request = pqi_alloc_io_request(ctrl_info); 5224 io_request->io_complete_callback = pqi_aio_io_complete; 5225 io_request->scmd = scmd; 5226 io_request->raid_bypass = raid_bypass; 5227 5228 request = io_request->iu; 5229 memset(request, 0, 5230 offsetof(struct pqi_raid_path_request, sg_descriptors)); 5231 5232 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO; 5233 put_unaligned_le32(aio_handle, &request->nexus_id); 5234 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length); 5235 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 5236 put_unaligned_le16(io_request->index, &request->request_id); 5237 request->error_index = request->request_id; 5238 if (cdb_length > sizeof(request->cdb)) 5239 cdb_length = sizeof(request->cdb); 5240 request->cdb_length = cdb_length; 5241 memcpy(request->cdb, cdb, cdb_length); 5242 5243 switch (scmd->sc_data_direction) { 5244 case DMA_TO_DEVICE: 5245 request->data_direction = SOP_READ_FLAG; 5246 break; 5247 case DMA_FROM_DEVICE: 5248 request->data_direction = SOP_WRITE_FLAG; 5249 break; 5250 case DMA_NONE: 5251 request->data_direction = SOP_NO_DIRECTION_FLAG; 5252 break; 5253 case DMA_BIDIRECTIONAL: 5254 request->data_direction = SOP_BIDIRECTIONAL; 5255 break; 5256 default: 5257 dev_err(&ctrl_info->pci_dev->dev, 5258 "unknown data direction: %d\n", 5259 scmd->sc_data_direction); 5260 break; 5261 } 5262 5263 if (encryption_info) { 5264 request->encryption_enable = true; 5265 put_unaligned_le16(encryption_info->data_encryption_key_index, 5266 &request->data_encryption_key_index); 5267 put_unaligned_le32(encryption_info->encrypt_tweak_lower, 5268 &request->encrypt_tweak_lower); 5269 put_unaligned_le32(encryption_info->encrypt_tweak_upper, 5270 &request->encrypt_tweak_upper); 5271 } 5272 5273 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request); 5274 if (rc) { 5275 pqi_free_io_request(io_request); 5276 return SCSI_MLQUEUE_HOST_BUSY; 5277 } 5278 5279 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request); 5280 5281 return 0; 5282 } 5283 5284 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info, 5285 struct scsi_cmnd *scmd) 5286 { 5287 u16 hw_queue; 5288 5289 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request)); 5290 if (hw_queue > ctrl_info->max_hw_queue_index) 5291 hw_queue = 0; 5292 5293 return hw_queue; 5294 } 5295 5296 /* 5297 * This function gets called just before we hand the completed SCSI request 5298 * back to the SML. 5299 */ 5300 5301 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd) 5302 { 5303 struct pqi_scsi_dev *device; 5304 5305 if (!scmd->device) { 5306 set_host_byte(scmd, DID_NO_CONNECT); 5307 return; 5308 } 5309 5310 device = scmd->device->hostdata; 5311 if (!device) { 5312 set_host_byte(scmd, DID_NO_CONNECT); 5313 return; 5314 } 5315 5316 atomic_dec(&device->scsi_cmds_outstanding); 5317 } 5318 5319 static int pqi_scsi_queue_command(struct Scsi_Host *shost, 5320 struct scsi_cmnd *scmd) 5321 { 5322 int rc; 5323 struct pqi_ctrl_info *ctrl_info; 5324 struct pqi_scsi_dev *device; 5325 u16 hw_queue; 5326 struct pqi_queue_group *queue_group; 5327 bool raid_bypassed; 5328 5329 device = scmd->device->hostdata; 5330 ctrl_info = shost_to_hba(shost); 5331 5332 if (!device) { 5333 set_host_byte(scmd, DID_NO_CONNECT); 5334 pqi_scsi_done(scmd); 5335 return 0; 5336 } 5337 5338 atomic_inc(&device->scsi_cmds_outstanding); 5339 5340 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(ctrl_info, 5341 device)) { 5342 set_host_byte(scmd, DID_NO_CONNECT); 5343 pqi_scsi_done(scmd); 5344 return 0; 5345 } 5346 5347 pqi_ctrl_busy(ctrl_info); 5348 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) || 5349 pqi_ctrl_in_ofa(ctrl_info)) { 5350 rc = SCSI_MLQUEUE_HOST_BUSY; 5351 goto out; 5352 } 5353 5354 /* 5355 * This is necessary because the SML doesn't zero out this field during 5356 * error recovery. 5357 */ 5358 scmd->result = 0; 5359 5360 hw_queue = pqi_get_hw_queue(ctrl_info, scmd); 5361 queue_group = &ctrl_info->queue_groups[hw_queue]; 5362 5363 if (pqi_is_logical_device(device)) { 5364 raid_bypassed = false; 5365 if (device->raid_bypass_enabled && 5366 !blk_rq_is_passthrough(scmd->request)) { 5367 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, 5368 scmd, queue_group); 5369 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) 5370 raid_bypassed = true; 5371 } 5372 if (!raid_bypassed) 5373 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, 5374 queue_group); 5375 } else { 5376 if (device->aio_enabled) 5377 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, 5378 queue_group); 5379 else 5380 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, 5381 queue_group); 5382 } 5383 5384 out: 5385 pqi_ctrl_unbusy(ctrl_info); 5386 if (rc) 5387 atomic_dec(&device->scsi_cmds_outstanding); 5388 5389 return rc; 5390 } 5391 5392 static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info, 5393 struct pqi_queue_group *queue_group) 5394 { 5395 unsigned int path; 5396 unsigned long flags; 5397 bool list_is_empty; 5398 5399 for (path = 0; path < 2; path++) { 5400 while (1) { 5401 spin_lock_irqsave( 5402 &queue_group->submit_lock[path], flags); 5403 list_is_empty = 5404 list_empty(&queue_group->request_list[path]); 5405 spin_unlock_irqrestore( 5406 &queue_group->submit_lock[path], flags); 5407 if (list_is_empty) 5408 break; 5409 pqi_check_ctrl_health(ctrl_info); 5410 if (pqi_ctrl_offline(ctrl_info)) 5411 return -ENXIO; 5412 usleep_range(1000, 2000); 5413 } 5414 } 5415 5416 return 0; 5417 } 5418 5419 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info) 5420 { 5421 int rc; 5422 unsigned int i; 5423 unsigned int path; 5424 struct pqi_queue_group *queue_group; 5425 pqi_index_t iq_pi; 5426 pqi_index_t iq_ci; 5427 5428 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5429 queue_group = &ctrl_info->queue_groups[i]; 5430 5431 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group); 5432 if (rc) 5433 return rc; 5434 5435 for (path = 0; path < 2; path++) { 5436 iq_pi = queue_group->iq_pi_copy[path]; 5437 5438 while (1) { 5439 iq_ci = readl(queue_group->iq_ci[path]); 5440 if (iq_ci == iq_pi) 5441 break; 5442 pqi_check_ctrl_health(ctrl_info); 5443 if (pqi_ctrl_offline(ctrl_info)) 5444 return -ENXIO; 5445 usleep_range(1000, 2000); 5446 } 5447 } 5448 } 5449 5450 return 0; 5451 } 5452 5453 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info, 5454 struct pqi_scsi_dev *device) 5455 { 5456 unsigned int i; 5457 unsigned int path; 5458 struct pqi_queue_group *queue_group; 5459 unsigned long flags; 5460 struct pqi_io_request *io_request; 5461 struct pqi_io_request *next; 5462 struct scsi_cmnd *scmd; 5463 struct pqi_scsi_dev *scsi_device; 5464 5465 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5466 queue_group = &ctrl_info->queue_groups[i]; 5467 5468 for (path = 0; path < 2; path++) { 5469 spin_lock_irqsave( 5470 &queue_group->submit_lock[path], flags); 5471 5472 list_for_each_entry_safe(io_request, next, 5473 &queue_group->request_list[path], 5474 request_list_entry) { 5475 scmd = io_request->scmd; 5476 if (!scmd) 5477 continue; 5478 5479 scsi_device = scmd->device->hostdata; 5480 if (scsi_device != device) 5481 continue; 5482 5483 list_del(&io_request->request_list_entry); 5484 set_host_byte(scmd, DID_RESET); 5485 pqi_scsi_done(scmd); 5486 } 5487 5488 spin_unlock_irqrestore( 5489 &queue_group->submit_lock[path], flags); 5490 } 5491 } 5492 } 5493 5494 static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info) 5495 { 5496 unsigned int i; 5497 unsigned int path; 5498 struct pqi_queue_group *queue_group; 5499 unsigned long flags; 5500 struct pqi_io_request *io_request; 5501 struct pqi_io_request *next; 5502 struct scsi_cmnd *scmd; 5503 5504 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 5505 queue_group = &ctrl_info->queue_groups[i]; 5506 5507 for (path = 0; path < 2; path++) { 5508 spin_lock_irqsave(&queue_group->submit_lock[path], 5509 flags); 5510 5511 list_for_each_entry_safe(io_request, next, 5512 &queue_group->request_list[path], 5513 request_list_entry) { 5514 5515 scmd = io_request->scmd; 5516 if (!scmd) 5517 continue; 5518 5519 list_del(&io_request->request_list_entry); 5520 set_host_byte(scmd, DID_RESET); 5521 pqi_scsi_done(scmd); 5522 } 5523 5524 spin_unlock_irqrestore( 5525 &queue_group->submit_lock[path], flags); 5526 } 5527 } 5528 } 5529 5530 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5531 struct pqi_scsi_dev *device, unsigned long timeout_secs) 5532 { 5533 unsigned long timeout; 5534 5535 timeout = (timeout_secs * PQI_HZ) + jiffies; 5536 5537 while (atomic_read(&device->scsi_cmds_outstanding)) { 5538 pqi_check_ctrl_health(ctrl_info); 5539 if (pqi_ctrl_offline(ctrl_info)) 5540 return -ENXIO; 5541 if (timeout_secs != NO_TIMEOUT) { 5542 if (time_after(jiffies, timeout)) { 5543 dev_err(&ctrl_info->pci_dev->dev, 5544 "timed out waiting for pending IO\n"); 5545 return -ETIMEDOUT; 5546 } 5547 } 5548 usleep_range(1000, 2000); 5549 } 5550 5551 return 0; 5552 } 5553 5554 static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, 5555 unsigned long timeout_secs) 5556 { 5557 bool io_pending; 5558 unsigned long flags; 5559 unsigned long timeout; 5560 struct pqi_scsi_dev *device; 5561 5562 timeout = (timeout_secs * PQI_HZ) + jiffies; 5563 while (1) { 5564 io_pending = false; 5565 5566 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5567 list_for_each_entry(device, &ctrl_info->scsi_device_list, 5568 scsi_device_list_entry) { 5569 if (atomic_read(&device->scsi_cmds_outstanding)) { 5570 io_pending = true; 5571 break; 5572 } 5573 } 5574 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 5575 flags); 5576 5577 if (!io_pending) 5578 break; 5579 5580 pqi_check_ctrl_health(ctrl_info); 5581 if (pqi_ctrl_offline(ctrl_info)) 5582 return -ENXIO; 5583 5584 if (timeout_secs != NO_TIMEOUT) { 5585 if (time_after(jiffies, timeout)) { 5586 dev_err(&ctrl_info->pci_dev->dev, 5587 "timed out waiting for pending IO\n"); 5588 return -ETIMEDOUT; 5589 } 5590 } 5591 usleep_range(1000, 2000); 5592 } 5593 5594 return 0; 5595 } 5596 5597 static void pqi_lun_reset_complete(struct pqi_io_request *io_request, 5598 void *context) 5599 { 5600 struct completion *waiting = context; 5601 5602 complete(waiting); 5603 } 5604 5605 #define PQI_LUN_RESET_TIMEOUT_SECS 10 5606 5607 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info, 5608 struct pqi_scsi_dev *device, struct completion *wait) 5609 { 5610 int rc; 5611 5612 while (1) { 5613 if (wait_for_completion_io_timeout(wait, 5614 PQI_LUN_RESET_TIMEOUT_SECS * PQI_HZ)) { 5615 rc = 0; 5616 break; 5617 } 5618 5619 pqi_check_ctrl_health(ctrl_info); 5620 if (pqi_ctrl_offline(ctrl_info)) { 5621 rc = -ENXIO; 5622 break; 5623 } 5624 } 5625 5626 return rc; 5627 } 5628 5629 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, 5630 struct pqi_scsi_dev *device) 5631 { 5632 int rc; 5633 struct pqi_io_request *io_request; 5634 DECLARE_COMPLETION_ONSTACK(wait); 5635 struct pqi_task_management_request *request; 5636 5637 io_request = pqi_alloc_io_request(ctrl_info); 5638 io_request->io_complete_callback = pqi_lun_reset_complete; 5639 io_request->context = &wait; 5640 5641 request = io_request->iu; 5642 memset(request, 0, sizeof(*request)); 5643 5644 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT; 5645 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH, 5646 &request->header.iu_length); 5647 put_unaligned_le16(io_request->index, &request->request_id); 5648 memcpy(request->lun_number, device->scsi3addr, 5649 sizeof(request->lun_number)); 5650 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET; 5651 5652 pqi_start_io(ctrl_info, 5653 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH, 5654 io_request); 5655 5656 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait); 5657 if (rc == 0) 5658 rc = io_request->status; 5659 5660 pqi_free_io_request(io_request); 5661 5662 return rc; 5663 } 5664 5665 /* Performs a reset at the LUN level. */ 5666 5667 #define PQI_LUN_RESET_RETRIES 3 5668 #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000 5669 #define PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS 120 5670 5671 static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5672 struct pqi_scsi_dev *device) 5673 { 5674 int rc; 5675 unsigned int retries; 5676 unsigned long timeout_secs; 5677 5678 for (retries = 0;;) { 5679 rc = pqi_lun_reset(ctrl_info, device); 5680 if (rc != -EAGAIN || ++retries > PQI_LUN_RESET_RETRIES) 5681 break; 5682 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS); 5683 } 5684 5685 timeout_secs = rc ? PQI_LUN_RESET_PENDING_IO_TIMEOUT_SECS : NO_TIMEOUT; 5686 5687 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs); 5688 5689 return rc == 0 ? SUCCESS : FAILED; 5690 } 5691 5692 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, 5693 struct pqi_scsi_dev *device) 5694 { 5695 int rc; 5696 5697 mutex_lock(&ctrl_info->lun_reset_mutex); 5698 5699 pqi_ctrl_block_requests(ctrl_info); 5700 pqi_ctrl_wait_until_quiesced(ctrl_info); 5701 pqi_fail_io_queued_for_device(ctrl_info, device); 5702 rc = pqi_wait_until_inbound_queues_empty(ctrl_info); 5703 pqi_device_reset_start(device); 5704 pqi_ctrl_unblock_requests(ctrl_info); 5705 5706 if (rc) 5707 rc = FAILED; 5708 else 5709 rc = _pqi_device_reset(ctrl_info, device); 5710 5711 pqi_device_reset_done(device); 5712 5713 mutex_unlock(&ctrl_info->lun_reset_mutex); 5714 5715 return rc; 5716 } 5717 5718 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd) 5719 { 5720 int rc; 5721 struct Scsi_Host *shost; 5722 struct pqi_ctrl_info *ctrl_info; 5723 struct pqi_scsi_dev *device; 5724 5725 shost = scmd->device->host; 5726 ctrl_info = shost_to_hba(shost); 5727 device = scmd->device->hostdata; 5728 5729 dev_err(&ctrl_info->pci_dev->dev, 5730 "resetting scsi %d:%d:%d:%d\n", 5731 shost->host_no, device->bus, device->target, device->lun); 5732 5733 pqi_check_ctrl_health(ctrl_info); 5734 if (pqi_ctrl_offline(ctrl_info)) { 5735 dev_err(&ctrl_info->pci_dev->dev, 5736 "controller %u offlined - cannot send device reset\n", 5737 ctrl_info->ctrl_id); 5738 rc = FAILED; 5739 goto out; 5740 } 5741 5742 pqi_wait_until_ofa_finished(ctrl_info); 5743 5744 rc = pqi_device_reset(ctrl_info, device); 5745 5746 out: 5747 dev_err(&ctrl_info->pci_dev->dev, 5748 "reset of scsi %d:%d:%d:%d: %s\n", 5749 shost->host_no, device->bus, device->target, device->lun, 5750 rc == SUCCESS ? "SUCCESS" : "FAILED"); 5751 5752 return rc; 5753 } 5754 5755 static int pqi_slave_alloc(struct scsi_device *sdev) 5756 { 5757 struct pqi_scsi_dev *device; 5758 unsigned long flags; 5759 struct pqi_ctrl_info *ctrl_info; 5760 struct scsi_target *starget; 5761 struct sas_rphy *rphy; 5762 5763 ctrl_info = shost_to_hba(sdev->host); 5764 5765 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 5766 5767 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) { 5768 starget = scsi_target(sdev); 5769 rphy = target_to_rphy(starget); 5770 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy); 5771 if (device) { 5772 device->target = sdev_id(sdev); 5773 device->lun = sdev->lun; 5774 device->target_lun_valid = true; 5775 } 5776 } else { 5777 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev), 5778 sdev_id(sdev), sdev->lun); 5779 } 5780 5781 if (device) { 5782 sdev->hostdata = device; 5783 device->sdev = sdev; 5784 if (device->queue_depth) { 5785 device->advertised_queue_depth = device->queue_depth; 5786 scsi_change_queue_depth(sdev, 5787 device->advertised_queue_depth); 5788 } 5789 if (pqi_is_logical_device(device)) 5790 pqi_disable_write_same(sdev); 5791 else 5792 sdev->allow_restart = 1; 5793 } 5794 5795 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 5796 5797 return 0; 5798 } 5799 5800 static int pqi_map_queues(struct Scsi_Host *shost) 5801 { 5802 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost); 5803 5804 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT], 5805 ctrl_info->pci_dev, 0); 5806 } 5807 5808 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, 5809 void __user *arg) 5810 { 5811 struct pci_dev *pci_dev; 5812 u32 subsystem_vendor; 5813 u32 subsystem_device; 5814 cciss_pci_info_struct pciinfo; 5815 5816 if (!arg) 5817 return -EINVAL; 5818 5819 pci_dev = ctrl_info->pci_dev; 5820 5821 pciinfo.domain = pci_domain_nr(pci_dev->bus); 5822 pciinfo.bus = pci_dev->bus->number; 5823 pciinfo.dev_fn = pci_dev->devfn; 5824 subsystem_vendor = pci_dev->subsystem_vendor; 5825 subsystem_device = pci_dev->subsystem_device; 5826 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | 5827 subsystem_vendor; 5828 5829 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo))) 5830 return -EFAULT; 5831 5832 return 0; 5833 } 5834 5835 static int pqi_getdrivver_ioctl(void __user *arg) 5836 { 5837 u32 version; 5838 5839 if (!arg) 5840 return -EINVAL; 5841 5842 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) | 5843 (DRIVER_RELEASE << 16) | DRIVER_REVISION; 5844 5845 if (copy_to_user(arg, &version, sizeof(version))) 5846 return -EFAULT; 5847 5848 return 0; 5849 } 5850 5851 struct ciss_error_info { 5852 u8 scsi_status; 5853 int command_status; 5854 size_t sense_data_length; 5855 }; 5856 5857 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info, 5858 struct ciss_error_info *ciss_error_info) 5859 { 5860 int ciss_cmd_status; 5861 size_t sense_data_length; 5862 5863 switch (pqi_error_info->data_out_result) { 5864 case PQI_DATA_IN_OUT_GOOD: 5865 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS; 5866 break; 5867 case PQI_DATA_IN_OUT_UNDERFLOW: 5868 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN; 5869 break; 5870 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW: 5871 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN; 5872 break; 5873 case PQI_DATA_IN_OUT_PROTOCOL_ERROR: 5874 case PQI_DATA_IN_OUT_BUFFER_ERROR: 5875 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA: 5876 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE: 5877 case PQI_DATA_IN_OUT_ERROR: 5878 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR; 5879 break; 5880 case PQI_DATA_IN_OUT_HARDWARE_ERROR: 5881 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR: 5882 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT: 5883 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED: 5884 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED: 5885 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED: 5886 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST: 5887 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION: 5888 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED: 5889 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ: 5890 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR; 5891 break; 5892 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT: 5893 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT; 5894 break; 5895 case PQI_DATA_IN_OUT_ABORTED: 5896 ciss_cmd_status = CISS_CMD_STATUS_ABORTED; 5897 break; 5898 case PQI_DATA_IN_OUT_TIMEOUT: 5899 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT; 5900 break; 5901 default: 5902 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS; 5903 break; 5904 } 5905 5906 sense_data_length = 5907 get_unaligned_le16(&pqi_error_info->sense_data_length); 5908 if (sense_data_length == 0) 5909 sense_data_length = 5910 get_unaligned_le16(&pqi_error_info->response_data_length); 5911 if (sense_data_length) 5912 if (sense_data_length > sizeof(pqi_error_info->data)) 5913 sense_data_length = sizeof(pqi_error_info->data); 5914 5915 ciss_error_info->scsi_status = pqi_error_info->status; 5916 ciss_error_info->command_status = ciss_cmd_status; 5917 ciss_error_info->sense_data_length = sense_data_length; 5918 } 5919 5920 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg) 5921 { 5922 int rc; 5923 char *kernel_buffer = NULL; 5924 u16 iu_length; 5925 size_t sense_data_length; 5926 IOCTL_Command_struct iocommand; 5927 struct pqi_raid_path_request request; 5928 struct pqi_raid_error_info pqi_error_info; 5929 struct ciss_error_info ciss_error_info; 5930 5931 if (pqi_ctrl_offline(ctrl_info)) 5932 return -ENXIO; 5933 if (!arg) 5934 return -EINVAL; 5935 if (!capable(CAP_SYS_RAWIO)) 5936 return -EPERM; 5937 if (copy_from_user(&iocommand, arg, sizeof(iocommand))) 5938 return -EFAULT; 5939 if (iocommand.buf_size < 1 && 5940 iocommand.Request.Type.Direction != XFER_NONE) 5941 return -EINVAL; 5942 if (iocommand.Request.CDBLen > sizeof(request.cdb)) 5943 return -EINVAL; 5944 if (iocommand.Request.Type.Type != TYPE_CMD) 5945 return -EINVAL; 5946 5947 switch (iocommand.Request.Type.Direction) { 5948 case XFER_NONE: 5949 case XFER_WRITE: 5950 case XFER_READ: 5951 case XFER_READ | XFER_WRITE: 5952 break; 5953 default: 5954 return -EINVAL; 5955 } 5956 5957 if (iocommand.buf_size > 0) { 5958 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL); 5959 if (!kernel_buffer) 5960 return -ENOMEM; 5961 if (iocommand.Request.Type.Direction & XFER_WRITE) { 5962 if (copy_from_user(kernel_buffer, iocommand.buf, 5963 iocommand.buf_size)) { 5964 rc = -EFAULT; 5965 goto out; 5966 } 5967 } else { 5968 memset(kernel_buffer, 0, iocommand.buf_size); 5969 } 5970 } 5971 5972 memset(&request, 0, sizeof(request)); 5973 5974 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO; 5975 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) - 5976 PQI_REQUEST_HEADER_LENGTH; 5977 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes, 5978 sizeof(request.lun_number)); 5979 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen); 5980 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0; 5981 5982 switch (iocommand.Request.Type.Direction) { 5983 case XFER_NONE: 5984 request.data_direction = SOP_NO_DIRECTION_FLAG; 5985 break; 5986 case XFER_WRITE: 5987 request.data_direction = SOP_WRITE_FLAG; 5988 break; 5989 case XFER_READ: 5990 request.data_direction = SOP_READ_FLAG; 5991 break; 5992 case XFER_READ | XFER_WRITE: 5993 request.data_direction = SOP_BIDIRECTIONAL; 5994 break; 5995 } 5996 5997 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE; 5998 5999 if (iocommand.buf_size > 0) { 6000 put_unaligned_le32(iocommand.buf_size, &request.buffer_length); 6001 6002 rc = pqi_map_single(ctrl_info->pci_dev, 6003 &request.sg_descriptors[0], kernel_buffer, 6004 iocommand.buf_size, DMA_BIDIRECTIONAL); 6005 if (rc) 6006 goto out; 6007 6008 iu_length += sizeof(request.sg_descriptors[0]); 6009 } 6010 6011 put_unaligned_le16(iu_length, &request.header.iu_length); 6012 6013 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 6014 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT); 6015 6016 if (iocommand.buf_size > 0) 6017 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, 6018 DMA_BIDIRECTIONAL); 6019 6020 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info)); 6021 6022 if (rc == 0) { 6023 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info); 6024 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status; 6025 iocommand.error_info.CommandStatus = 6026 ciss_error_info.command_status; 6027 sense_data_length = ciss_error_info.sense_data_length; 6028 if (sense_data_length) { 6029 if (sense_data_length > 6030 sizeof(iocommand.error_info.SenseInfo)) 6031 sense_data_length = 6032 sizeof(iocommand.error_info.SenseInfo); 6033 memcpy(iocommand.error_info.SenseInfo, 6034 pqi_error_info.data, sense_data_length); 6035 iocommand.error_info.SenseLen = sense_data_length; 6036 } 6037 } 6038 6039 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) { 6040 rc = -EFAULT; 6041 goto out; 6042 } 6043 6044 if (rc == 0 && iocommand.buf_size > 0 && 6045 (iocommand.Request.Type.Direction & XFER_READ)) { 6046 if (copy_to_user(iocommand.buf, kernel_buffer, 6047 iocommand.buf_size)) { 6048 rc = -EFAULT; 6049 } 6050 } 6051 6052 out: 6053 kfree(kernel_buffer); 6054 6055 return rc; 6056 } 6057 6058 static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd, 6059 void __user *arg) 6060 { 6061 int rc; 6062 struct pqi_ctrl_info *ctrl_info; 6063 6064 ctrl_info = shost_to_hba(sdev->host); 6065 6066 if (pqi_ctrl_in_ofa(ctrl_info)) 6067 return -EBUSY; 6068 6069 switch (cmd) { 6070 case CCISS_DEREGDISK: 6071 case CCISS_REGNEWDISK: 6072 case CCISS_REGNEWD: 6073 rc = pqi_scan_scsi_devices(ctrl_info); 6074 break; 6075 case CCISS_GETPCIINFO: 6076 rc = pqi_getpciinfo_ioctl(ctrl_info, arg); 6077 break; 6078 case CCISS_GETDRIVVER: 6079 rc = pqi_getdrivver_ioctl(arg); 6080 break; 6081 case CCISS_PASSTHRU: 6082 rc = pqi_passthru_ioctl(ctrl_info, arg); 6083 break; 6084 default: 6085 rc = -EINVAL; 6086 break; 6087 } 6088 6089 return rc; 6090 } 6091 6092 static ssize_t pqi_version_show(struct device *dev, 6093 struct device_attribute *attr, char *buffer) 6094 { 6095 ssize_t count = 0; 6096 struct Scsi_Host *shost; 6097 struct pqi_ctrl_info *ctrl_info; 6098 6099 shost = class_to_shost(dev); 6100 ctrl_info = shost_to_hba(shost); 6101 6102 count += snprintf(buffer + count, PAGE_SIZE - count, 6103 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP); 6104 6105 count += snprintf(buffer + count, PAGE_SIZE - count, 6106 "firmware: %s\n", ctrl_info->firmware_version); 6107 6108 return count; 6109 } 6110 6111 static ssize_t pqi_host_rescan_store(struct device *dev, 6112 struct device_attribute *attr, const char *buffer, size_t count) 6113 { 6114 struct Scsi_Host *shost = class_to_shost(dev); 6115 6116 pqi_scan_start(shost); 6117 6118 return count; 6119 } 6120 6121 static ssize_t pqi_lockup_action_show(struct device *dev, 6122 struct device_attribute *attr, char *buffer) 6123 { 6124 int count = 0; 6125 unsigned int i; 6126 6127 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6128 if (pqi_lockup_actions[i].action == pqi_lockup_action) 6129 count += snprintf(buffer + count, PAGE_SIZE - count, 6130 "[%s] ", pqi_lockup_actions[i].name); 6131 else 6132 count += snprintf(buffer + count, PAGE_SIZE - count, 6133 "%s ", pqi_lockup_actions[i].name); 6134 } 6135 6136 count += snprintf(buffer + count, PAGE_SIZE - count, "\n"); 6137 6138 return count; 6139 } 6140 6141 static ssize_t pqi_lockup_action_store(struct device *dev, 6142 struct device_attribute *attr, const char *buffer, size_t count) 6143 { 6144 unsigned int i; 6145 char *action_name; 6146 char action_name_buffer[32]; 6147 6148 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer)); 6149 action_name = strstrip(action_name_buffer); 6150 6151 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 6152 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) { 6153 pqi_lockup_action = pqi_lockup_actions[i].action; 6154 return count; 6155 } 6156 } 6157 6158 return -EINVAL; 6159 } 6160 6161 static DEVICE_ATTR(version, 0444, pqi_version_show, NULL); 6162 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store); 6163 static DEVICE_ATTR(lockup_action, 0644, 6164 pqi_lockup_action_show, pqi_lockup_action_store); 6165 6166 static struct device_attribute *pqi_shost_attrs[] = { 6167 &dev_attr_version, 6168 &dev_attr_rescan, 6169 &dev_attr_lockup_action, 6170 NULL 6171 }; 6172 6173 static ssize_t pqi_unique_id_show(struct device *dev, 6174 struct device_attribute *attr, char *buffer) 6175 { 6176 struct pqi_ctrl_info *ctrl_info; 6177 struct scsi_device *sdev; 6178 struct pqi_scsi_dev *device; 6179 unsigned long flags; 6180 unsigned char uid[16]; 6181 6182 sdev = to_scsi_device(dev); 6183 ctrl_info = shost_to_hba(sdev->host); 6184 6185 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6186 6187 device = sdev->hostdata; 6188 if (!device) { 6189 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 6190 flags); 6191 return -ENODEV; 6192 } 6193 memcpy(uid, device->unique_id, sizeof(uid)); 6194 6195 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6196 6197 return snprintf(buffer, PAGE_SIZE, 6198 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n", 6199 uid[0], uid[1], uid[2], uid[3], 6200 uid[4], uid[5], uid[6], uid[7], 6201 uid[8], uid[9], uid[10], uid[11], 6202 uid[12], uid[13], uid[14], uid[15]); 6203 } 6204 6205 static ssize_t pqi_lunid_show(struct device *dev, 6206 struct device_attribute *attr, char *buffer) 6207 { 6208 struct pqi_ctrl_info *ctrl_info; 6209 struct scsi_device *sdev; 6210 struct pqi_scsi_dev *device; 6211 unsigned long flags; 6212 u8 lunid[8]; 6213 6214 sdev = to_scsi_device(dev); 6215 ctrl_info = shost_to_hba(sdev->host); 6216 6217 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6218 6219 device = sdev->hostdata; 6220 if (!device) { 6221 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 6222 flags); 6223 return -ENODEV; 6224 } 6225 memcpy(lunid, device->scsi3addr, sizeof(lunid)); 6226 6227 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6228 6229 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid); 6230 } 6231 6232 #define MAX_PATHS 8 6233 static ssize_t pqi_path_info_show(struct device *dev, 6234 struct device_attribute *attr, char *buf) 6235 { 6236 struct pqi_ctrl_info *ctrl_info; 6237 struct scsi_device *sdev; 6238 struct pqi_scsi_dev *device; 6239 unsigned long flags; 6240 int i; 6241 int output_len = 0; 6242 u8 box; 6243 u8 bay; 6244 u8 path_map_index = 0; 6245 char *active; 6246 unsigned char phys_connector[2]; 6247 6248 sdev = to_scsi_device(dev); 6249 ctrl_info = shost_to_hba(sdev->host); 6250 6251 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6252 6253 device = sdev->hostdata; 6254 if (!device) { 6255 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 6256 flags); 6257 return -ENODEV; 6258 } 6259 6260 bay = device->bay; 6261 for (i = 0; i < MAX_PATHS; i++) { 6262 path_map_index = 1<<i; 6263 if (i == device->active_path_index) 6264 active = "Active"; 6265 else if (device->path_map & path_map_index) 6266 active = "Inactive"; 6267 else 6268 continue; 6269 6270 output_len += scnprintf(buf + output_len, 6271 PAGE_SIZE - output_len, 6272 "[%d:%d:%d:%d] %20.20s ", 6273 ctrl_info->scsi_host->host_no, 6274 device->bus, device->target, 6275 device->lun, 6276 scsi_device_type(device->devtype)); 6277 6278 if (device->devtype == TYPE_RAID || 6279 pqi_is_logical_device(device)) 6280 goto end_buffer; 6281 6282 memcpy(&phys_connector, &device->phys_connector[i], 6283 sizeof(phys_connector)); 6284 if (phys_connector[0] < '0') 6285 phys_connector[0] = '0'; 6286 if (phys_connector[1] < '0') 6287 phys_connector[1] = '0'; 6288 6289 output_len += scnprintf(buf + output_len, 6290 PAGE_SIZE - output_len, 6291 "PORT: %.2s ", phys_connector); 6292 6293 box = device->box[i]; 6294 if (box != 0 && box != 0xFF) 6295 output_len += scnprintf(buf + output_len, 6296 PAGE_SIZE - output_len, 6297 "BOX: %hhu ", box); 6298 6299 if ((device->devtype == TYPE_DISK || 6300 device->devtype == TYPE_ZBC) && 6301 pqi_expose_device(device)) 6302 output_len += scnprintf(buf + output_len, 6303 PAGE_SIZE - output_len, 6304 "BAY: %hhu ", bay); 6305 6306 end_buffer: 6307 output_len += scnprintf(buf + output_len, 6308 PAGE_SIZE - output_len, 6309 "%s\n", active); 6310 } 6311 6312 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6313 return output_len; 6314 } 6315 6316 6317 static ssize_t pqi_sas_address_show(struct device *dev, 6318 struct device_attribute *attr, char *buffer) 6319 { 6320 struct pqi_ctrl_info *ctrl_info; 6321 struct scsi_device *sdev; 6322 struct pqi_scsi_dev *device; 6323 unsigned long flags; 6324 u64 sas_address; 6325 6326 sdev = to_scsi_device(dev); 6327 ctrl_info = shost_to_hba(sdev->host); 6328 6329 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6330 6331 device = sdev->hostdata; 6332 if (pqi_is_logical_device(device)) { 6333 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, 6334 flags); 6335 return -ENODEV; 6336 } 6337 sas_address = device->sas_address; 6338 6339 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6340 6341 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address); 6342 } 6343 6344 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev, 6345 struct device_attribute *attr, char *buffer) 6346 { 6347 struct pqi_ctrl_info *ctrl_info; 6348 struct scsi_device *sdev; 6349 struct pqi_scsi_dev *device; 6350 unsigned long flags; 6351 6352 sdev = to_scsi_device(dev); 6353 ctrl_info = shost_to_hba(sdev->host); 6354 6355 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6356 6357 device = sdev->hostdata; 6358 buffer[0] = device->raid_bypass_enabled ? '1' : '0'; 6359 buffer[1] = '\n'; 6360 buffer[2] = '\0'; 6361 6362 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6363 6364 return 2; 6365 } 6366 6367 static ssize_t pqi_raid_level_show(struct device *dev, 6368 struct device_attribute *attr, char *buffer) 6369 { 6370 struct pqi_ctrl_info *ctrl_info; 6371 struct scsi_device *sdev; 6372 struct pqi_scsi_dev *device; 6373 unsigned long flags; 6374 char *raid_level; 6375 6376 sdev = to_scsi_device(dev); 6377 ctrl_info = shost_to_hba(sdev->host); 6378 6379 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags); 6380 6381 device = sdev->hostdata; 6382 6383 if (pqi_is_logical_device(device)) 6384 raid_level = pqi_raid_level_to_string(device->raid_level); 6385 else 6386 raid_level = "N/A"; 6387 6388 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); 6389 6390 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level); 6391 } 6392 6393 static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL); 6394 static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL); 6395 static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL); 6396 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL); 6397 static DEVICE_ATTR(ssd_smart_path_enabled, 0444, 6398 pqi_ssd_smart_path_enabled_show, NULL); 6399 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL); 6400 6401 static struct device_attribute *pqi_sdev_attrs[] = { 6402 &dev_attr_lunid, 6403 &dev_attr_unique_id, 6404 &dev_attr_path_info, 6405 &dev_attr_sas_address, 6406 &dev_attr_ssd_smart_path_enabled, 6407 &dev_attr_raid_level, 6408 NULL 6409 }; 6410 6411 static struct scsi_host_template pqi_driver_template = { 6412 .module = THIS_MODULE, 6413 .name = DRIVER_NAME_SHORT, 6414 .proc_name = DRIVER_NAME_SHORT, 6415 .queuecommand = pqi_scsi_queue_command, 6416 .scan_start = pqi_scan_start, 6417 .scan_finished = pqi_scan_finished, 6418 .this_id = -1, 6419 .eh_device_reset_handler = pqi_eh_device_reset_handler, 6420 .ioctl = pqi_ioctl, 6421 .slave_alloc = pqi_slave_alloc, 6422 .map_queues = pqi_map_queues, 6423 .sdev_attrs = pqi_sdev_attrs, 6424 .shost_attrs = pqi_shost_attrs, 6425 }; 6426 6427 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info) 6428 { 6429 int rc; 6430 struct Scsi_Host *shost; 6431 6432 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info)); 6433 if (!shost) { 6434 dev_err(&ctrl_info->pci_dev->dev, 6435 "scsi_host_alloc failed for controller %u\n", 6436 ctrl_info->ctrl_id); 6437 return -ENOMEM; 6438 } 6439 6440 shost->io_port = 0; 6441 shost->n_io_port = 0; 6442 shost->this_id = -1; 6443 shost->max_channel = PQI_MAX_BUS; 6444 shost->max_cmd_len = MAX_COMMAND_SIZE; 6445 shost->max_lun = ~0; 6446 shost->max_id = ~0; 6447 shost->max_sectors = ctrl_info->max_sectors; 6448 shost->can_queue = ctrl_info->scsi_ml_can_queue; 6449 shost->cmd_per_lun = shost->can_queue; 6450 shost->sg_tablesize = ctrl_info->sg_tablesize; 6451 shost->transportt = pqi_sas_transport_template; 6452 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0); 6453 shost->unique_id = shost->irq; 6454 shost->nr_hw_queues = ctrl_info->num_queue_groups; 6455 shost->hostdata[0] = (unsigned long)ctrl_info; 6456 6457 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev); 6458 if (rc) { 6459 dev_err(&ctrl_info->pci_dev->dev, 6460 "scsi_add_host failed for controller %u\n", 6461 ctrl_info->ctrl_id); 6462 goto free_host; 6463 } 6464 6465 rc = pqi_add_sas_host(shost, ctrl_info); 6466 if (rc) { 6467 dev_err(&ctrl_info->pci_dev->dev, 6468 "add SAS host failed for controller %u\n", 6469 ctrl_info->ctrl_id); 6470 goto remove_host; 6471 } 6472 6473 ctrl_info->scsi_host = shost; 6474 6475 return 0; 6476 6477 remove_host: 6478 scsi_remove_host(shost); 6479 free_host: 6480 scsi_host_put(shost); 6481 6482 return rc; 6483 } 6484 6485 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info) 6486 { 6487 struct Scsi_Host *shost; 6488 6489 pqi_delete_sas_host(ctrl_info); 6490 6491 shost = ctrl_info->scsi_host; 6492 if (!shost) 6493 return; 6494 6495 scsi_remove_host(shost); 6496 scsi_host_put(shost); 6497 } 6498 6499 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info) 6500 { 6501 int rc = 0; 6502 struct pqi_device_registers __iomem *pqi_registers; 6503 unsigned long timeout; 6504 unsigned int timeout_msecs; 6505 union pqi_reset_register reset_reg; 6506 6507 pqi_registers = ctrl_info->pqi_registers; 6508 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100; 6509 timeout = msecs_to_jiffies(timeout_msecs) + jiffies; 6510 6511 while (1) { 6512 msleep(PQI_RESET_POLL_INTERVAL_MSECS); 6513 reset_reg.all_bits = readl(&pqi_registers->device_reset); 6514 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED) 6515 break; 6516 pqi_check_ctrl_health(ctrl_info); 6517 if (pqi_ctrl_offline(ctrl_info)) { 6518 rc = -ENXIO; 6519 break; 6520 } 6521 if (time_after(jiffies, timeout)) { 6522 rc = -ETIMEDOUT; 6523 break; 6524 } 6525 } 6526 6527 return rc; 6528 } 6529 6530 static int pqi_reset(struct pqi_ctrl_info *ctrl_info) 6531 { 6532 int rc; 6533 union pqi_reset_register reset_reg; 6534 6535 if (ctrl_info->pqi_reset_quiesce_supported) { 6536 rc = sis_pqi_reset_quiesce(ctrl_info); 6537 if (rc) { 6538 dev_err(&ctrl_info->pci_dev->dev, 6539 "PQI reset failed during quiesce with error %d\n", 6540 rc); 6541 return rc; 6542 } 6543 } 6544 6545 reset_reg.all_bits = 0; 6546 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET; 6547 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET; 6548 6549 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset); 6550 6551 rc = pqi_wait_for_pqi_reset_completion(ctrl_info); 6552 if (rc) 6553 dev_err(&ctrl_info->pci_dev->dev, 6554 "PQI reset failed with error %d\n", rc); 6555 6556 return rc; 6557 } 6558 6559 static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info) 6560 { 6561 int rc; 6562 struct bmic_identify_controller *identify; 6563 6564 identify = kmalloc(sizeof(*identify), GFP_KERNEL); 6565 if (!identify) 6566 return -ENOMEM; 6567 6568 rc = pqi_identify_controller(ctrl_info, identify); 6569 if (rc) 6570 goto out; 6571 6572 memcpy(ctrl_info->firmware_version, identify->firmware_version, 6573 sizeof(identify->firmware_version)); 6574 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0'; 6575 snprintf(ctrl_info->firmware_version + 6576 strlen(ctrl_info->firmware_version), 6577 sizeof(ctrl_info->firmware_version), 6578 "-%u", get_unaligned_le16(&identify->firmware_build_number)); 6579 6580 out: 6581 kfree(identify); 6582 6583 return rc; 6584 } 6585 6586 struct pqi_config_table_section_info { 6587 struct pqi_ctrl_info *ctrl_info; 6588 void *section; 6589 u32 section_offset; 6590 void __iomem *section_iomem_addr; 6591 }; 6592 6593 static inline bool pqi_is_firmware_feature_supported( 6594 struct pqi_config_table_firmware_features *firmware_features, 6595 unsigned int bit_position) 6596 { 6597 unsigned int byte_index; 6598 6599 byte_index = bit_position / BITS_PER_BYTE; 6600 6601 if (byte_index >= le16_to_cpu(firmware_features->num_elements)) 6602 return false; 6603 6604 return firmware_features->features_supported[byte_index] & 6605 (1 << (bit_position % BITS_PER_BYTE)) ? true : false; 6606 } 6607 6608 static inline bool pqi_is_firmware_feature_enabled( 6609 struct pqi_config_table_firmware_features *firmware_features, 6610 void __iomem *firmware_features_iomem_addr, 6611 unsigned int bit_position) 6612 { 6613 unsigned int byte_index; 6614 u8 __iomem *features_enabled_iomem_addr; 6615 6616 byte_index = (bit_position / BITS_PER_BYTE) + 6617 (le16_to_cpu(firmware_features->num_elements) * 2); 6618 6619 features_enabled_iomem_addr = firmware_features_iomem_addr + 6620 offsetof(struct pqi_config_table_firmware_features, 6621 features_supported) + byte_index; 6622 6623 return *((__force u8 *)features_enabled_iomem_addr) & 6624 (1 << (bit_position % BITS_PER_BYTE)) ? true : false; 6625 } 6626 6627 static inline void pqi_request_firmware_feature( 6628 struct pqi_config_table_firmware_features *firmware_features, 6629 unsigned int bit_position) 6630 { 6631 unsigned int byte_index; 6632 6633 byte_index = (bit_position / BITS_PER_BYTE) + 6634 le16_to_cpu(firmware_features->num_elements); 6635 6636 firmware_features->features_supported[byte_index] |= 6637 (1 << (bit_position % BITS_PER_BYTE)); 6638 } 6639 6640 static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info, 6641 u16 first_section, u16 last_section) 6642 { 6643 struct pqi_vendor_general_request request; 6644 6645 memset(&request, 0, sizeof(request)); 6646 6647 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; 6648 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 6649 &request.header.iu_length); 6650 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE, 6651 &request.function_code); 6652 put_unaligned_le16(first_section, 6653 &request.data.config_table_update.first_section); 6654 put_unaligned_le16(last_section, 6655 &request.data.config_table_update.last_section); 6656 6657 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 6658 0, NULL, NO_TIMEOUT); 6659 } 6660 6661 static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info, 6662 struct pqi_config_table_firmware_features *firmware_features, 6663 void __iomem *firmware_features_iomem_addr) 6664 { 6665 void *features_requested; 6666 void __iomem *features_requested_iomem_addr; 6667 6668 features_requested = firmware_features->features_supported + 6669 le16_to_cpu(firmware_features->num_elements); 6670 6671 features_requested_iomem_addr = firmware_features_iomem_addr + 6672 (features_requested - (void *)firmware_features); 6673 6674 memcpy_toio(features_requested_iomem_addr, features_requested, 6675 le16_to_cpu(firmware_features->num_elements)); 6676 6677 return pqi_config_table_update(ctrl_info, 6678 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES, 6679 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES); 6680 } 6681 6682 struct pqi_firmware_feature { 6683 char *feature_name; 6684 unsigned int feature_bit; 6685 bool supported; 6686 bool enabled; 6687 void (*feature_status)(struct pqi_ctrl_info *ctrl_info, 6688 struct pqi_firmware_feature *firmware_feature); 6689 }; 6690 6691 static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info, 6692 struct pqi_firmware_feature *firmware_feature) 6693 { 6694 if (!firmware_feature->supported) { 6695 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n", 6696 firmware_feature->feature_name); 6697 return; 6698 } 6699 6700 if (firmware_feature->enabled) { 6701 dev_info(&ctrl_info->pci_dev->dev, 6702 "%s enabled\n", firmware_feature->feature_name); 6703 return; 6704 } 6705 6706 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n", 6707 firmware_feature->feature_name); 6708 } 6709 6710 static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info, 6711 struct pqi_firmware_feature *firmware_feature) 6712 { 6713 if (firmware_feature->feature_status) 6714 firmware_feature->feature_status(ctrl_info, firmware_feature); 6715 } 6716 6717 static DEFINE_MUTEX(pqi_firmware_features_mutex); 6718 6719 static struct pqi_firmware_feature pqi_firmware_features[] = { 6720 { 6721 .feature_name = "Online Firmware Activation", 6722 .feature_bit = PQI_FIRMWARE_FEATURE_OFA, 6723 .feature_status = pqi_firmware_feature_status, 6724 }, 6725 { 6726 .feature_name = "Serial Management Protocol", 6727 .feature_bit = PQI_FIRMWARE_FEATURE_SMP, 6728 .feature_status = pqi_firmware_feature_status, 6729 }, 6730 { 6731 .feature_name = "New Soft Reset Handshake", 6732 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE, 6733 .feature_status = pqi_firmware_feature_status, 6734 }, 6735 }; 6736 6737 static void pqi_process_firmware_features( 6738 struct pqi_config_table_section_info *section_info) 6739 { 6740 int rc; 6741 struct pqi_ctrl_info *ctrl_info; 6742 struct pqi_config_table_firmware_features *firmware_features; 6743 void __iomem *firmware_features_iomem_addr; 6744 unsigned int i; 6745 unsigned int num_features_supported; 6746 6747 ctrl_info = section_info->ctrl_info; 6748 firmware_features = section_info->section; 6749 firmware_features_iomem_addr = section_info->section_iomem_addr; 6750 6751 for (i = 0, num_features_supported = 0; 6752 i < ARRAY_SIZE(pqi_firmware_features); i++) { 6753 if (pqi_is_firmware_feature_supported(firmware_features, 6754 pqi_firmware_features[i].feature_bit)) { 6755 pqi_firmware_features[i].supported = true; 6756 num_features_supported++; 6757 } else { 6758 pqi_firmware_feature_update(ctrl_info, 6759 &pqi_firmware_features[i]); 6760 } 6761 } 6762 6763 if (num_features_supported == 0) 6764 return; 6765 6766 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6767 if (!pqi_firmware_features[i].supported) 6768 continue; 6769 pqi_request_firmware_feature(firmware_features, 6770 pqi_firmware_features[i].feature_bit); 6771 } 6772 6773 rc = pqi_enable_firmware_features(ctrl_info, firmware_features, 6774 firmware_features_iomem_addr); 6775 if (rc) { 6776 dev_err(&ctrl_info->pci_dev->dev, 6777 "failed to enable firmware features in PQI configuration table\n"); 6778 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6779 if (!pqi_firmware_features[i].supported) 6780 continue; 6781 pqi_firmware_feature_update(ctrl_info, 6782 &pqi_firmware_features[i]); 6783 } 6784 return; 6785 } 6786 6787 ctrl_info->soft_reset_handshake_supported = false; 6788 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6789 if (!pqi_firmware_features[i].supported) 6790 continue; 6791 if (pqi_is_firmware_feature_enabled(firmware_features, 6792 firmware_features_iomem_addr, 6793 pqi_firmware_features[i].feature_bit)) { 6794 pqi_firmware_features[i].enabled = true; 6795 if (pqi_firmware_features[i].feature_bit == 6796 PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE) 6797 ctrl_info->soft_reset_handshake_supported = 6798 true; 6799 } 6800 pqi_firmware_feature_update(ctrl_info, 6801 &pqi_firmware_features[i]); 6802 } 6803 } 6804 6805 static void pqi_init_firmware_features(void) 6806 { 6807 unsigned int i; 6808 6809 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { 6810 pqi_firmware_features[i].supported = false; 6811 pqi_firmware_features[i].enabled = false; 6812 } 6813 } 6814 6815 static void pqi_process_firmware_features_section( 6816 struct pqi_config_table_section_info *section_info) 6817 { 6818 mutex_lock(&pqi_firmware_features_mutex); 6819 pqi_init_firmware_features(); 6820 pqi_process_firmware_features(section_info); 6821 mutex_unlock(&pqi_firmware_features_mutex); 6822 } 6823 6824 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) 6825 { 6826 u32 table_length; 6827 u32 section_offset; 6828 void __iomem *table_iomem_addr; 6829 struct pqi_config_table *config_table; 6830 struct pqi_config_table_section_header *section; 6831 struct pqi_config_table_section_info section_info; 6832 6833 table_length = ctrl_info->config_table_length; 6834 if (table_length == 0) 6835 return 0; 6836 6837 config_table = kmalloc(table_length, GFP_KERNEL); 6838 if (!config_table) { 6839 dev_err(&ctrl_info->pci_dev->dev, 6840 "failed to allocate memory for PQI configuration table\n"); 6841 return -ENOMEM; 6842 } 6843 6844 /* 6845 * Copy the config table contents from I/O memory space into the 6846 * temporary buffer. 6847 */ 6848 table_iomem_addr = ctrl_info->iomem_base + 6849 ctrl_info->config_table_offset; 6850 memcpy_fromio(config_table, table_iomem_addr, table_length); 6851 6852 section_info.ctrl_info = ctrl_info; 6853 section_offset = 6854 get_unaligned_le32(&config_table->first_section_offset); 6855 6856 while (section_offset) { 6857 section = (void *)config_table + section_offset; 6858 6859 section_info.section = section; 6860 section_info.section_offset = section_offset; 6861 section_info.section_iomem_addr = 6862 table_iomem_addr + section_offset; 6863 6864 switch (get_unaligned_le16(§ion->section_id)) { 6865 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES: 6866 pqi_process_firmware_features_section(§ion_info); 6867 break; 6868 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT: 6869 if (pqi_disable_heartbeat) 6870 dev_warn(&ctrl_info->pci_dev->dev, 6871 "heartbeat disabled by module parameter\n"); 6872 else 6873 ctrl_info->heartbeat_counter = 6874 table_iomem_addr + 6875 section_offset + 6876 offsetof( 6877 struct pqi_config_table_heartbeat, 6878 heartbeat_counter); 6879 break; 6880 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET: 6881 ctrl_info->soft_reset_status = 6882 table_iomem_addr + 6883 section_offset + 6884 offsetof(struct pqi_config_table_soft_reset, 6885 soft_reset_status); 6886 break; 6887 } 6888 6889 section_offset = 6890 get_unaligned_le16(§ion->next_section_offset); 6891 } 6892 6893 kfree(config_table); 6894 6895 return 0; 6896 } 6897 6898 /* Switches the controller from PQI mode back into SIS mode. */ 6899 6900 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info) 6901 { 6902 int rc; 6903 6904 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE); 6905 rc = pqi_reset(ctrl_info); 6906 if (rc) 6907 return rc; 6908 rc = sis_reenable_sis_mode(ctrl_info); 6909 if (rc) { 6910 dev_err(&ctrl_info->pci_dev->dev, 6911 "re-enabling SIS mode failed with error %d\n", rc); 6912 return rc; 6913 } 6914 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 6915 6916 return 0; 6917 } 6918 6919 /* 6920 * If the controller isn't already in SIS mode, this function forces it into 6921 * SIS mode. 6922 */ 6923 6924 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info) 6925 { 6926 if (!sis_is_firmware_running(ctrl_info)) 6927 return -ENXIO; 6928 6929 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE) 6930 return 0; 6931 6932 if (sis_is_kernel_up(ctrl_info)) { 6933 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 6934 return 0; 6935 } 6936 6937 return pqi_revert_to_sis_mode(ctrl_info); 6938 } 6939 6940 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info) 6941 { 6942 int rc; 6943 6944 rc = pqi_force_sis_mode(ctrl_info); 6945 if (rc) 6946 return rc; 6947 6948 /* 6949 * Wait until the controller is ready to start accepting SIS 6950 * commands. 6951 */ 6952 rc = sis_wait_for_ctrl_ready(ctrl_info); 6953 if (rc) 6954 return rc; 6955 6956 /* 6957 * Get the controller properties. This allows us to determine 6958 * whether or not it supports PQI mode. 6959 */ 6960 rc = sis_get_ctrl_properties(ctrl_info); 6961 if (rc) { 6962 dev_err(&ctrl_info->pci_dev->dev, 6963 "error obtaining controller properties\n"); 6964 return rc; 6965 } 6966 6967 rc = sis_get_pqi_capabilities(ctrl_info); 6968 if (rc) { 6969 dev_err(&ctrl_info->pci_dev->dev, 6970 "error obtaining controller capabilities\n"); 6971 return rc; 6972 } 6973 6974 if (reset_devices) { 6975 if (ctrl_info->max_outstanding_requests > 6976 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP) 6977 ctrl_info->max_outstanding_requests = 6978 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP; 6979 } else { 6980 if (ctrl_info->max_outstanding_requests > 6981 PQI_MAX_OUTSTANDING_REQUESTS) 6982 ctrl_info->max_outstanding_requests = 6983 PQI_MAX_OUTSTANDING_REQUESTS; 6984 } 6985 6986 pqi_calculate_io_resources(ctrl_info); 6987 6988 rc = pqi_alloc_error_buffer(ctrl_info); 6989 if (rc) { 6990 dev_err(&ctrl_info->pci_dev->dev, 6991 "failed to allocate PQI error buffer\n"); 6992 return rc; 6993 } 6994 6995 /* 6996 * If the function we are about to call succeeds, the 6997 * controller will transition from legacy SIS mode 6998 * into PQI mode. 6999 */ 7000 rc = sis_init_base_struct_addr(ctrl_info); 7001 if (rc) { 7002 dev_err(&ctrl_info->pci_dev->dev, 7003 "error initializing PQI mode\n"); 7004 return rc; 7005 } 7006 7007 /* Wait for the controller to complete the SIS -> PQI transition. */ 7008 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 7009 if (rc) { 7010 dev_err(&ctrl_info->pci_dev->dev, 7011 "transition to PQI mode failed\n"); 7012 return rc; 7013 } 7014 7015 /* From here on, we are running in PQI mode. */ 7016 ctrl_info->pqi_mode_enabled = true; 7017 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7018 7019 rc = pqi_alloc_admin_queues(ctrl_info); 7020 if (rc) { 7021 dev_err(&ctrl_info->pci_dev->dev, 7022 "failed to allocate admin queues\n"); 7023 return rc; 7024 } 7025 7026 rc = pqi_create_admin_queues(ctrl_info); 7027 if (rc) { 7028 dev_err(&ctrl_info->pci_dev->dev, 7029 "error creating admin queues\n"); 7030 return rc; 7031 } 7032 7033 rc = pqi_report_device_capability(ctrl_info); 7034 if (rc) { 7035 dev_err(&ctrl_info->pci_dev->dev, 7036 "obtaining device capability failed\n"); 7037 return rc; 7038 } 7039 7040 rc = pqi_validate_device_capability(ctrl_info); 7041 if (rc) 7042 return rc; 7043 7044 pqi_calculate_queue_resources(ctrl_info); 7045 7046 rc = pqi_enable_msix_interrupts(ctrl_info); 7047 if (rc) 7048 return rc; 7049 7050 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) { 7051 ctrl_info->max_msix_vectors = 7052 ctrl_info->num_msix_vectors_enabled; 7053 pqi_calculate_queue_resources(ctrl_info); 7054 } 7055 7056 rc = pqi_alloc_io_resources(ctrl_info); 7057 if (rc) 7058 return rc; 7059 7060 rc = pqi_alloc_operational_queues(ctrl_info); 7061 if (rc) { 7062 dev_err(&ctrl_info->pci_dev->dev, 7063 "failed to allocate operational queues\n"); 7064 return rc; 7065 } 7066 7067 pqi_init_operational_queues(ctrl_info); 7068 7069 rc = pqi_request_irqs(ctrl_info); 7070 if (rc) 7071 return rc; 7072 7073 rc = pqi_create_queues(ctrl_info); 7074 if (rc) 7075 return rc; 7076 7077 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 7078 7079 ctrl_info->controller_online = true; 7080 7081 rc = pqi_process_config_table(ctrl_info); 7082 if (rc) 7083 return rc; 7084 7085 pqi_start_heartbeat_timer(ctrl_info); 7086 7087 rc = pqi_enable_events(ctrl_info); 7088 if (rc) { 7089 dev_err(&ctrl_info->pci_dev->dev, 7090 "error enabling events\n"); 7091 return rc; 7092 } 7093 7094 /* Register with the SCSI subsystem. */ 7095 rc = pqi_register_scsi(ctrl_info); 7096 if (rc) 7097 return rc; 7098 7099 rc = pqi_get_ctrl_firmware_version(ctrl_info); 7100 if (rc) { 7101 dev_err(&ctrl_info->pci_dev->dev, 7102 "error obtaining firmware version\n"); 7103 return rc; 7104 } 7105 7106 rc = pqi_set_diag_rescan(ctrl_info); 7107 if (rc) { 7108 dev_err(&ctrl_info->pci_dev->dev, 7109 "error enabling multi-lun rescan\n"); 7110 return rc; 7111 } 7112 7113 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 7114 if (rc) { 7115 dev_err(&ctrl_info->pci_dev->dev, 7116 "error updating host wellness\n"); 7117 return rc; 7118 } 7119 7120 pqi_schedule_update_time_worker(ctrl_info); 7121 7122 pqi_scan_scsi_devices(ctrl_info); 7123 7124 return 0; 7125 } 7126 7127 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info) 7128 { 7129 unsigned int i; 7130 struct pqi_admin_queues *admin_queues; 7131 struct pqi_event_queue *event_queue; 7132 7133 admin_queues = &ctrl_info->admin_queues; 7134 admin_queues->iq_pi_copy = 0; 7135 admin_queues->oq_ci_copy = 0; 7136 writel(0, admin_queues->oq_pi); 7137 7138 for (i = 0; i < ctrl_info->num_queue_groups; i++) { 7139 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0; 7140 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0; 7141 ctrl_info->queue_groups[i].oq_ci_copy = 0; 7142 7143 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]); 7144 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]); 7145 writel(0, ctrl_info->queue_groups[i].oq_pi); 7146 } 7147 7148 event_queue = &ctrl_info->event_queue; 7149 writel(0, event_queue->oq_pi); 7150 event_queue->oq_ci_copy = 0; 7151 } 7152 7153 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) 7154 { 7155 int rc; 7156 7157 rc = pqi_force_sis_mode(ctrl_info); 7158 if (rc) 7159 return rc; 7160 7161 /* 7162 * Wait until the controller is ready to start accepting SIS 7163 * commands. 7164 */ 7165 rc = sis_wait_for_ctrl_ready_resume(ctrl_info); 7166 if (rc) 7167 return rc; 7168 7169 /* 7170 * Get the controller properties. This allows us to determine 7171 * whether or not it supports PQI mode. 7172 */ 7173 rc = sis_get_ctrl_properties(ctrl_info); 7174 if (rc) { 7175 dev_err(&ctrl_info->pci_dev->dev, 7176 "error obtaining controller properties\n"); 7177 return rc; 7178 } 7179 7180 rc = sis_get_pqi_capabilities(ctrl_info); 7181 if (rc) { 7182 dev_err(&ctrl_info->pci_dev->dev, 7183 "error obtaining controller capabilities\n"); 7184 return rc; 7185 } 7186 7187 /* 7188 * If the function we are about to call succeeds, the 7189 * controller will transition from legacy SIS mode 7190 * into PQI mode. 7191 */ 7192 rc = sis_init_base_struct_addr(ctrl_info); 7193 if (rc) { 7194 dev_err(&ctrl_info->pci_dev->dev, 7195 "error initializing PQI mode\n"); 7196 return rc; 7197 } 7198 7199 /* Wait for the controller to complete the SIS -> PQI transition. */ 7200 rc = pqi_wait_for_pqi_mode_ready(ctrl_info); 7201 if (rc) { 7202 dev_err(&ctrl_info->pci_dev->dev, 7203 "transition to PQI mode failed\n"); 7204 return rc; 7205 } 7206 7207 /* From here on, we are running in PQI mode. */ 7208 ctrl_info->pqi_mode_enabled = true; 7209 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7210 7211 pqi_reinit_queues(ctrl_info); 7212 7213 rc = pqi_create_admin_queues(ctrl_info); 7214 if (rc) { 7215 dev_err(&ctrl_info->pci_dev->dev, 7216 "error creating admin queues\n"); 7217 return rc; 7218 } 7219 7220 rc = pqi_create_queues(ctrl_info); 7221 if (rc) 7222 return rc; 7223 7224 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); 7225 7226 ctrl_info->controller_online = true; 7227 pqi_ctrl_unblock_requests(ctrl_info); 7228 7229 rc = pqi_process_config_table(ctrl_info); 7230 if (rc) 7231 return rc; 7232 7233 pqi_start_heartbeat_timer(ctrl_info); 7234 7235 rc = pqi_enable_events(ctrl_info); 7236 if (rc) { 7237 dev_err(&ctrl_info->pci_dev->dev, 7238 "error enabling events\n"); 7239 return rc; 7240 } 7241 7242 rc = pqi_get_ctrl_firmware_version(ctrl_info); 7243 if (rc) { 7244 dev_err(&ctrl_info->pci_dev->dev, 7245 "error obtaining firmware version\n"); 7246 return rc; 7247 } 7248 7249 rc = pqi_set_diag_rescan(ctrl_info); 7250 if (rc) { 7251 dev_err(&ctrl_info->pci_dev->dev, 7252 "error enabling multi-lun rescan\n"); 7253 return rc; 7254 } 7255 7256 rc = pqi_write_driver_version_to_host_wellness(ctrl_info); 7257 if (rc) { 7258 dev_err(&ctrl_info->pci_dev->dev, 7259 "error updating host wellness\n"); 7260 return rc; 7261 } 7262 7263 pqi_schedule_update_time_worker(ctrl_info); 7264 7265 pqi_scan_scsi_devices(ctrl_info); 7266 7267 return 0; 7268 } 7269 7270 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev, 7271 u16 timeout) 7272 { 7273 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2, 7274 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout); 7275 } 7276 7277 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info) 7278 { 7279 int rc; 7280 u64 mask; 7281 7282 rc = pci_enable_device(ctrl_info->pci_dev); 7283 if (rc) { 7284 dev_err(&ctrl_info->pci_dev->dev, 7285 "failed to enable PCI device\n"); 7286 return rc; 7287 } 7288 7289 if (sizeof(dma_addr_t) > 4) 7290 mask = DMA_BIT_MASK(64); 7291 else 7292 mask = DMA_BIT_MASK(32); 7293 7294 rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask); 7295 if (rc) { 7296 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n"); 7297 goto disable_device; 7298 } 7299 7300 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT); 7301 if (rc) { 7302 dev_err(&ctrl_info->pci_dev->dev, 7303 "failed to obtain PCI resources\n"); 7304 goto disable_device; 7305 } 7306 7307 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start( 7308 ctrl_info->pci_dev, 0), 7309 sizeof(struct pqi_ctrl_registers)); 7310 if (!ctrl_info->iomem_base) { 7311 dev_err(&ctrl_info->pci_dev->dev, 7312 "failed to map memory for controller registers\n"); 7313 rc = -ENOMEM; 7314 goto release_regions; 7315 } 7316 7317 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6 7318 7319 /* Increase the PCIe completion timeout. */ 7320 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev, 7321 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS); 7322 if (rc) { 7323 dev_err(&ctrl_info->pci_dev->dev, 7324 "failed to set PCIe completion timeout\n"); 7325 goto release_regions; 7326 } 7327 7328 /* Enable bus mastering. */ 7329 pci_set_master(ctrl_info->pci_dev); 7330 7331 ctrl_info->registers = ctrl_info->iomem_base; 7332 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers; 7333 7334 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info); 7335 7336 return 0; 7337 7338 release_regions: 7339 pci_release_regions(ctrl_info->pci_dev); 7340 disable_device: 7341 pci_disable_device(ctrl_info->pci_dev); 7342 7343 return rc; 7344 } 7345 7346 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info) 7347 { 7348 iounmap(ctrl_info->iomem_base); 7349 pci_release_regions(ctrl_info->pci_dev); 7350 if (pci_is_enabled(ctrl_info->pci_dev)) 7351 pci_disable_device(ctrl_info->pci_dev); 7352 pci_set_drvdata(ctrl_info->pci_dev, NULL); 7353 } 7354 7355 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node) 7356 { 7357 struct pqi_ctrl_info *ctrl_info; 7358 7359 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info), 7360 GFP_KERNEL, numa_node); 7361 if (!ctrl_info) 7362 return NULL; 7363 7364 mutex_init(&ctrl_info->scan_mutex); 7365 mutex_init(&ctrl_info->lun_reset_mutex); 7366 mutex_init(&ctrl_info->ofa_mutex); 7367 7368 INIT_LIST_HEAD(&ctrl_info->scsi_device_list); 7369 spin_lock_init(&ctrl_info->scsi_device_list_lock); 7370 7371 INIT_WORK(&ctrl_info->event_work, pqi_event_worker); 7372 atomic_set(&ctrl_info->num_interrupts, 0); 7373 7374 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker); 7375 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker); 7376 7377 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0); 7378 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker); 7379 7380 sema_init(&ctrl_info->sync_request_sem, 7381 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS); 7382 init_waitqueue_head(&ctrl_info->block_requests_wait); 7383 7384 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list); 7385 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock); 7386 INIT_WORK(&ctrl_info->raid_bypass_retry_work, 7387 pqi_raid_bypass_retry_worker); 7388 7389 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1; 7390 ctrl_info->irq_mode = IRQ_MODE_NONE; 7391 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS; 7392 7393 return ctrl_info; 7394 } 7395 7396 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info) 7397 { 7398 kfree(ctrl_info); 7399 } 7400 7401 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info) 7402 { 7403 pqi_free_irqs(ctrl_info); 7404 pqi_disable_msix_interrupts(ctrl_info); 7405 } 7406 7407 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info) 7408 { 7409 pqi_stop_heartbeat_timer(ctrl_info); 7410 pqi_free_interrupts(ctrl_info); 7411 if (ctrl_info->queue_memory_base) 7412 dma_free_coherent(&ctrl_info->pci_dev->dev, 7413 ctrl_info->queue_memory_length, 7414 ctrl_info->queue_memory_base, 7415 ctrl_info->queue_memory_base_dma_handle); 7416 if (ctrl_info->admin_queue_memory_base) 7417 dma_free_coherent(&ctrl_info->pci_dev->dev, 7418 ctrl_info->admin_queue_memory_length, 7419 ctrl_info->admin_queue_memory_base, 7420 ctrl_info->admin_queue_memory_base_dma_handle); 7421 pqi_free_all_io_requests(ctrl_info); 7422 if (ctrl_info->error_buffer) 7423 dma_free_coherent(&ctrl_info->pci_dev->dev, 7424 ctrl_info->error_buffer_length, 7425 ctrl_info->error_buffer, 7426 ctrl_info->error_buffer_dma_handle); 7427 if (ctrl_info->iomem_base) 7428 pqi_cleanup_pci_init(ctrl_info); 7429 pqi_free_ctrl_info(ctrl_info); 7430 } 7431 7432 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info) 7433 { 7434 pqi_cancel_rescan_worker(ctrl_info); 7435 pqi_cancel_update_time_worker(ctrl_info); 7436 pqi_remove_all_scsi_devices(ctrl_info); 7437 pqi_unregister_scsi(ctrl_info); 7438 if (ctrl_info->pqi_mode_enabled) 7439 pqi_revert_to_sis_mode(ctrl_info); 7440 pqi_free_ctrl_resources(ctrl_info); 7441 } 7442 7443 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info) 7444 { 7445 pqi_cancel_update_time_worker(ctrl_info); 7446 pqi_cancel_rescan_worker(ctrl_info); 7447 pqi_wait_until_lun_reset_finished(ctrl_info); 7448 pqi_wait_until_scan_finished(ctrl_info); 7449 pqi_ctrl_ofa_start(ctrl_info); 7450 pqi_ctrl_block_requests(ctrl_info); 7451 pqi_ctrl_wait_until_quiesced(ctrl_info); 7452 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS); 7453 pqi_fail_io_queued_for_all_devices(ctrl_info); 7454 pqi_wait_until_inbound_queues_empty(ctrl_info); 7455 pqi_stop_heartbeat_timer(ctrl_info); 7456 ctrl_info->pqi_mode_enabled = false; 7457 pqi_save_ctrl_mode(ctrl_info, SIS_MODE); 7458 } 7459 7460 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info) 7461 { 7462 pqi_ofa_free_host_buffer(ctrl_info); 7463 ctrl_info->pqi_mode_enabled = true; 7464 pqi_save_ctrl_mode(ctrl_info, PQI_MODE); 7465 ctrl_info->controller_online = true; 7466 pqi_ctrl_unblock_requests(ctrl_info); 7467 pqi_start_heartbeat_timer(ctrl_info); 7468 pqi_schedule_update_time_worker(ctrl_info); 7469 pqi_clear_soft_reset_status(ctrl_info, 7470 PQI_SOFT_RESET_ABORT); 7471 pqi_scan_scsi_devices(ctrl_info); 7472 } 7473 7474 static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, 7475 u32 total_size, u32 chunk_size) 7476 { 7477 u32 sg_count; 7478 u32 size; 7479 int i; 7480 struct pqi_sg_descriptor *mem_descriptor = NULL; 7481 struct device *dev; 7482 struct pqi_ofa_memory *ofap; 7483 7484 dev = &ctrl_info->pci_dev->dev; 7485 7486 sg_count = (total_size + chunk_size - 1); 7487 sg_count /= chunk_size; 7488 7489 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7490 7491 if (sg_count*chunk_size < total_size) 7492 goto out; 7493 7494 ctrl_info->pqi_ofa_chunk_virt_addr = 7495 kcalloc(sg_count, sizeof(void *), GFP_KERNEL); 7496 if (!ctrl_info->pqi_ofa_chunk_virt_addr) 7497 goto out; 7498 7499 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) { 7500 dma_addr_t dma_handle; 7501 7502 ctrl_info->pqi_ofa_chunk_virt_addr[i] = 7503 dma_alloc_coherent(dev, chunk_size, &dma_handle, 7504 GFP_KERNEL); 7505 7506 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i]) 7507 break; 7508 7509 mem_descriptor = &ofap->sg_descriptor[i]; 7510 put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address); 7511 put_unaligned_le32 (chunk_size, &mem_descriptor->length); 7512 } 7513 7514 if (!size || size < total_size) 7515 goto out_free_chunks; 7516 7517 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags); 7518 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors); 7519 put_unaligned_le32(size, &ofap->bytes_allocated); 7520 7521 return 0; 7522 7523 out_free_chunks: 7524 while (--i >= 0) { 7525 mem_descriptor = &ofap->sg_descriptor[i]; 7526 dma_free_coherent(dev, chunk_size, 7527 ctrl_info->pqi_ofa_chunk_virt_addr[i], 7528 get_unaligned_le64(&mem_descriptor->address)); 7529 } 7530 kfree(ctrl_info->pqi_ofa_chunk_virt_addr); 7531 7532 out: 7533 put_unaligned_le32 (0, &ofap->bytes_allocated); 7534 return -ENOMEM; 7535 } 7536 7537 static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info) 7538 { 7539 u32 total_size; 7540 u32 min_chunk_size; 7541 u32 chunk_sz; 7542 7543 total_size = le32_to_cpu( 7544 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated); 7545 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS; 7546 7547 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2) 7548 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz)) 7549 return 0; 7550 7551 return -ENOMEM; 7552 } 7553 7554 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, 7555 u32 bytes_requested) 7556 { 7557 struct pqi_ofa_memory *pqi_ofa_memory; 7558 struct device *dev; 7559 7560 dev = &ctrl_info->pci_dev->dev; 7561 pqi_ofa_memory = dma_alloc_coherent(dev, 7562 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, 7563 &ctrl_info->pqi_ofa_mem_dma_handle, 7564 GFP_KERNEL); 7565 7566 if (!pqi_ofa_memory) 7567 return; 7568 7569 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version); 7570 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE, 7571 sizeof(pqi_ofa_memory->signature)); 7572 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested); 7573 7574 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory; 7575 7576 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) { 7577 dev_err(dev, "Failed to allocate host buffer of size = %u", 7578 bytes_requested); 7579 } 7580 } 7581 7582 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info) 7583 { 7584 int i; 7585 struct pqi_sg_descriptor *mem_descriptor; 7586 struct pqi_ofa_memory *ofap; 7587 7588 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7589 7590 if (!ofap) 7591 return; 7592 7593 if (!ofap->bytes_allocated) 7594 goto out; 7595 7596 mem_descriptor = ofap->sg_descriptor; 7597 7598 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors); 7599 i++) { 7600 dma_free_coherent(&ctrl_info->pci_dev->dev, 7601 get_unaligned_le32(&mem_descriptor[i].length), 7602 ctrl_info->pqi_ofa_chunk_virt_addr[i], 7603 get_unaligned_le64(&mem_descriptor[i].address)); 7604 } 7605 kfree(ctrl_info->pqi_ofa_chunk_virt_addr); 7606 7607 out: 7608 dma_free_coherent(&ctrl_info->pci_dev->dev, 7609 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap, 7610 ctrl_info->pqi_ofa_mem_dma_handle); 7611 ctrl_info->pqi_ofa_mem_virt_addr = NULL; 7612 } 7613 7614 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info) 7615 { 7616 struct pqi_vendor_general_request request; 7617 size_t size; 7618 struct pqi_ofa_memory *ofap; 7619 7620 memset(&request, 0, sizeof(request)); 7621 7622 ofap = ctrl_info->pqi_ofa_mem_virt_addr; 7623 7624 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; 7625 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, 7626 &request.header.iu_length); 7627 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE, 7628 &request.function_code); 7629 7630 if (ofap) { 7631 size = offsetof(struct pqi_ofa_memory, sg_descriptor) + 7632 get_unaligned_le16(&ofap->num_memory_descriptors) * 7633 sizeof(struct pqi_sg_descriptor); 7634 7635 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle, 7636 &request.data.ofa_memory_allocation.buffer_address); 7637 put_unaligned_le32(size, 7638 &request.data.ofa_memory_allocation.buffer_length); 7639 7640 } 7641 7642 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 7643 0, NULL, NO_TIMEOUT); 7644 } 7645 7646 #define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000 7647 7648 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info) 7649 { 7650 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); 7651 return pqi_ctrl_init_resume(ctrl_info); 7652 } 7653 7654 static void pqi_perform_lockup_action(void) 7655 { 7656 switch (pqi_lockup_action) { 7657 case PANIC: 7658 panic("FATAL: Smart Family Controller lockup detected"); 7659 break; 7660 case REBOOT: 7661 emergency_restart(); 7662 break; 7663 case NONE: 7664 default: 7665 break; 7666 } 7667 } 7668 7669 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = { 7670 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR, 7671 .status = SAM_STAT_CHECK_CONDITION, 7672 }; 7673 7674 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info) 7675 { 7676 unsigned int i; 7677 struct pqi_io_request *io_request; 7678 struct scsi_cmnd *scmd; 7679 7680 for (i = 0; i < ctrl_info->max_io_slots; i++) { 7681 io_request = &ctrl_info->io_request_pool[i]; 7682 if (atomic_read(&io_request->refcount) == 0) 7683 continue; 7684 7685 scmd = io_request->scmd; 7686 if (scmd) { 7687 set_host_byte(scmd, DID_NO_CONNECT); 7688 } else { 7689 io_request->status = -ENXIO; 7690 io_request->error_info = 7691 &pqi_ctrl_offline_raid_error_info; 7692 } 7693 7694 io_request->io_complete_callback(io_request, 7695 io_request->context); 7696 } 7697 } 7698 7699 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info) 7700 { 7701 pqi_perform_lockup_action(); 7702 pqi_stop_heartbeat_timer(ctrl_info); 7703 pqi_free_interrupts(ctrl_info); 7704 pqi_cancel_rescan_worker(ctrl_info); 7705 pqi_cancel_update_time_worker(ctrl_info); 7706 pqi_ctrl_wait_until_quiesced(ctrl_info); 7707 pqi_fail_all_outstanding_requests(ctrl_info); 7708 pqi_clear_all_queued_raid_bypass_retries(ctrl_info); 7709 pqi_ctrl_unblock_requests(ctrl_info); 7710 } 7711 7712 static void pqi_ctrl_offline_worker(struct work_struct *work) 7713 { 7714 struct pqi_ctrl_info *ctrl_info; 7715 7716 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work); 7717 pqi_take_ctrl_offline_deferred(ctrl_info); 7718 } 7719 7720 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info) 7721 { 7722 if (!ctrl_info->controller_online) 7723 return; 7724 7725 ctrl_info->controller_online = false; 7726 ctrl_info->pqi_mode_enabled = false; 7727 pqi_ctrl_block_requests(ctrl_info); 7728 if (!pqi_disable_ctrl_shutdown) 7729 sis_shutdown_ctrl(ctrl_info); 7730 pci_disable_device(ctrl_info->pci_dev); 7731 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n"); 7732 schedule_work(&ctrl_info->ctrl_offline_work); 7733 } 7734 7735 static void pqi_print_ctrl_info(struct pci_dev *pci_dev, 7736 const struct pci_device_id *id) 7737 { 7738 char *ctrl_description; 7739 7740 if (id->driver_data) 7741 ctrl_description = (char *)id->driver_data; 7742 else 7743 ctrl_description = "Microsemi Smart Family Controller"; 7744 7745 dev_info(&pci_dev->dev, "%s found\n", ctrl_description); 7746 } 7747 7748 static int pqi_pci_probe(struct pci_dev *pci_dev, 7749 const struct pci_device_id *id) 7750 { 7751 int rc; 7752 int node, cp_node; 7753 struct pqi_ctrl_info *ctrl_info; 7754 7755 pqi_print_ctrl_info(pci_dev, id); 7756 7757 if (pqi_disable_device_id_wildcards && 7758 id->subvendor == PCI_ANY_ID && 7759 id->subdevice == PCI_ANY_ID) { 7760 dev_warn(&pci_dev->dev, 7761 "controller not probed because device ID wildcards are disabled\n"); 7762 return -ENODEV; 7763 } 7764 7765 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID) 7766 dev_warn(&pci_dev->dev, 7767 "controller device ID matched using wildcards\n"); 7768 7769 node = dev_to_node(&pci_dev->dev); 7770 if (node == NUMA_NO_NODE) { 7771 cp_node = cpu_to_node(0); 7772 if (cp_node == NUMA_NO_NODE) 7773 cp_node = 0; 7774 set_dev_node(&pci_dev->dev, cp_node); 7775 } 7776 7777 ctrl_info = pqi_alloc_ctrl_info(node); 7778 if (!ctrl_info) { 7779 dev_err(&pci_dev->dev, 7780 "failed to allocate controller info block\n"); 7781 return -ENOMEM; 7782 } 7783 7784 ctrl_info->pci_dev = pci_dev; 7785 7786 rc = pqi_pci_init(ctrl_info); 7787 if (rc) 7788 goto error; 7789 7790 rc = pqi_ctrl_init(ctrl_info); 7791 if (rc) 7792 goto error; 7793 7794 return 0; 7795 7796 error: 7797 pqi_remove_ctrl(ctrl_info); 7798 7799 return rc; 7800 } 7801 7802 static void pqi_pci_remove(struct pci_dev *pci_dev) 7803 { 7804 struct pqi_ctrl_info *ctrl_info; 7805 7806 ctrl_info = pci_get_drvdata(pci_dev); 7807 if (!ctrl_info) 7808 return; 7809 7810 ctrl_info->in_shutdown = true; 7811 7812 pqi_remove_ctrl(ctrl_info); 7813 } 7814 7815 static void pqi_shutdown(struct pci_dev *pci_dev) 7816 { 7817 int rc; 7818 struct pqi_ctrl_info *ctrl_info; 7819 7820 ctrl_info = pci_get_drvdata(pci_dev); 7821 if (!ctrl_info) 7822 goto error; 7823 7824 /* 7825 * Write all data in the controller's battery-backed cache to 7826 * storage. 7827 */ 7828 rc = pqi_flush_cache(ctrl_info, SHUTDOWN); 7829 pqi_free_interrupts(ctrl_info); 7830 pqi_reset(ctrl_info); 7831 if (rc == 0) 7832 return; 7833 7834 error: 7835 dev_warn(&pci_dev->dev, 7836 "unable to flush controller cache\n"); 7837 } 7838 7839 static void pqi_process_lockup_action_param(void) 7840 { 7841 unsigned int i; 7842 7843 if (!pqi_lockup_action_param) 7844 return; 7845 7846 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) { 7847 if (strcmp(pqi_lockup_action_param, 7848 pqi_lockup_actions[i].name) == 0) { 7849 pqi_lockup_action = pqi_lockup_actions[i].action; 7850 return; 7851 } 7852 } 7853 7854 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n", 7855 DRIVER_NAME_SHORT, pqi_lockup_action_param); 7856 } 7857 7858 static void pqi_process_module_params(void) 7859 { 7860 pqi_process_lockup_action_param(); 7861 } 7862 7863 static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state) 7864 { 7865 struct pqi_ctrl_info *ctrl_info; 7866 7867 ctrl_info = pci_get_drvdata(pci_dev); 7868 7869 pqi_disable_events(ctrl_info); 7870 pqi_cancel_update_time_worker(ctrl_info); 7871 pqi_cancel_rescan_worker(ctrl_info); 7872 pqi_wait_until_scan_finished(ctrl_info); 7873 pqi_wait_until_lun_reset_finished(ctrl_info); 7874 pqi_wait_until_ofa_finished(ctrl_info); 7875 pqi_flush_cache(ctrl_info, SUSPEND); 7876 pqi_ctrl_block_requests(ctrl_info); 7877 pqi_ctrl_wait_until_quiesced(ctrl_info); 7878 pqi_wait_until_inbound_queues_empty(ctrl_info); 7879 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); 7880 pqi_stop_heartbeat_timer(ctrl_info); 7881 7882 if (state.event == PM_EVENT_FREEZE) 7883 return 0; 7884 7885 pci_save_state(pci_dev); 7886 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state)); 7887 7888 ctrl_info->controller_online = false; 7889 ctrl_info->pqi_mode_enabled = false; 7890 7891 return 0; 7892 } 7893 7894 static __maybe_unused int pqi_resume(struct pci_dev *pci_dev) 7895 { 7896 int rc; 7897 struct pqi_ctrl_info *ctrl_info; 7898 7899 ctrl_info = pci_get_drvdata(pci_dev); 7900 7901 if (pci_dev->current_state != PCI_D0) { 7902 ctrl_info->max_hw_queue_index = 0; 7903 pqi_free_interrupts(ctrl_info); 7904 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX); 7905 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler, 7906 IRQF_SHARED, DRIVER_NAME_SHORT, 7907 &ctrl_info->queue_groups[0]); 7908 if (rc) { 7909 dev_err(&ctrl_info->pci_dev->dev, 7910 "irq %u init failed with error %d\n", 7911 pci_dev->irq, rc); 7912 return rc; 7913 } 7914 pqi_start_heartbeat_timer(ctrl_info); 7915 pqi_ctrl_unblock_requests(ctrl_info); 7916 return 0; 7917 } 7918 7919 pci_set_power_state(pci_dev, PCI_D0); 7920 pci_restore_state(pci_dev); 7921 7922 return pqi_ctrl_init_resume(ctrl_info); 7923 } 7924 7925 /* Define the PCI IDs for the controllers that we support. */ 7926 static const struct pci_device_id pqi_pci_id_table[] = { 7927 { 7928 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7929 0x105b, 0x1211) 7930 }, 7931 { 7932 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7933 0x105b, 0x1321) 7934 }, 7935 { 7936 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7937 0x152d, 0x8a22) 7938 }, 7939 { 7940 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7941 0x152d, 0x8a23) 7942 }, 7943 { 7944 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7945 0x152d, 0x8a24) 7946 }, 7947 { 7948 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7949 0x152d, 0x8a36) 7950 }, 7951 { 7952 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7953 0x152d, 0x8a37) 7954 }, 7955 { 7956 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7957 0x193d, 0x1104) 7958 }, 7959 { 7960 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7961 0x193d, 0x1105) 7962 }, 7963 { 7964 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7965 0x193d, 0x1106) 7966 }, 7967 { 7968 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7969 0x193d, 0x1107) 7970 }, 7971 { 7972 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7973 0x193d, 0x8460) 7974 }, 7975 { 7976 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7977 0x193d, 0x8461) 7978 }, 7979 { 7980 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7981 0x193d, 0xc460) 7982 }, 7983 { 7984 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7985 0x193d, 0xc461) 7986 }, 7987 { 7988 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7989 0x193d, 0xf460) 7990 }, 7991 { 7992 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7993 0x193d, 0xf461) 7994 }, 7995 { 7996 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 7997 0x1bd4, 0x0045) 7998 }, 7999 { 8000 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8001 0x1bd4, 0x0046) 8002 }, 8003 { 8004 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8005 0x1bd4, 0x0047) 8006 }, 8007 { 8008 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8009 0x1bd4, 0x0048) 8010 }, 8011 { 8012 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8013 0x1bd4, 0x004a) 8014 }, 8015 { 8016 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8017 0x1bd4, 0x004b) 8018 }, 8019 { 8020 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8021 0x1bd4, 0x004c) 8022 }, 8023 { 8024 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8025 0x19e5, 0xd227) 8026 }, 8027 { 8028 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8029 0x19e5, 0xd228) 8030 }, 8031 { 8032 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8033 0x19e5, 0xd229) 8034 }, 8035 { 8036 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8037 0x19e5, 0xd22a) 8038 }, 8039 { 8040 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8041 0x19e5, 0xd22b) 8042 }, 8043 { 8044 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8045 0x19e5, 0xd22c) 8046 }, 8047 { 8048 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8049 PCI_VENDOR_ID_ADAPTEC2, 0x0110) 8050 }, 8051 { 8052 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8053 PCI_VENDOR_ID_ADAPTEC2, 0x0608) 8054 }, 8055 { 8056 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8057 PCI_VENDOR_ID_ADAPTEC2, 0x0800) 8058 }, 8059 { 8060 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8061 PCI_VENDOR_ID_ADAPTEC2, 0x0801) 8062 }, 8063 { 8064 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8065 PCI_VENDOR_ID_ADAPTEC2, 0x0802) 8066 }, 8067 { 8068 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8069 PCI_VENDOR_ID_ADAPTEC2, 0x0803) 8070 }, 8071 { 8072 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8073 PCI_VENDOR_ID_ADAPTEC2, 0x0804) 8074 }, 8075 { 8076 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8077 PCI_VENDOR_ID_ADAPTEC2, 0x0805) 8078 }, 8079 { 8080 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8081 PCI_VENDOR_ID_ADAPTEC2, 0x0806) 8082 }, 8083 { 8084 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8085 PCI_VENDOR_ID_ADAPTEC2, 0x0807) 8086 }, 8087 { 8088 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8089 PCI_VENDOR_ID_ADAPTEC2, 0x0900) 8090 }, 8091 { 8092 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8093 PCI_VENDOR_ID_ADAPTEC2, 0x0901) 8094 }, 8095 { 8096 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8097 PCI_VENDOR_ID_ADAPTEC2, 0x0902) 8098 }, 8099 { 8100 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8101 PCI_VENDOR_ID_ADAPTEC2, 0x0903) 8102 }, 8103 { 8104 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8105 PCI_VENDOR_ID_ADAPTEC2, 0x0904) 8106 }, 8107 { 8108 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8109 PCI_VENDOR_ID_ADAPTEC2, 0x0905) 8110 }, 8111 { 8112 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8113 PCI_VENDOR_ID_ADAPTEC2, 0x0906) 8114 }, 8115 { 8116 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8117 PCI_VENDOR_ID_ADAPTEC2, 0x0907) 8118 }, 8119 { 8120 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8121 PCI_VENDOR_ID_ADAPTEC2, 0x0908) 8122 }, 8123 { 8124 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8125 PCI_VENDOR_ID_ADAPTEC2, 0x090a) 8126 }, 8127 { 8128 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8129 PCI_VENDOR_ID_ADAPTEC2, 0x1200) 8130 }, 8131 { 8132 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8133 PCI_VENDOR_ID_ADAPTEC2, 0x1201) 8134 }, 8135 { 8136 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8137 PCI_VENDOR_ID_ADAPTEC2, 0x1202) 8138 }, 8139 { 8140 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8141 PCI_VENDOR_ID_ADAPTEC2, 0x1280) 8142 }, 8143 { 8144 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8145 PCI_VENDOR_ID_ADAPTEC2, 0x1281) 8146 }, 8147 { 8148 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8149 PCI_VENDOR_ID_ADAPTEC2, 0x1282) 8150 }, 8151 { 8152 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8153 PCI_VENDOR_ID_ADAPTEC2, 0x1300) 8154 }, 8155 { 8156 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8157 PCI_VENDOR_ID_ADAPTEC2, 0x1301) 8158 }, 8159 { 8160 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8161 PCI_VENDOR_ID_ADAPTEC2, 0x1302) 8162 }, 8163 { 8164 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8165 PCI_VENDOR_ID_ADAPTEC2, 0x1303) 8166 }, 8167 { 8168 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8169 PCI_VENDOR_ID_ADAPTEC2, 0x1380) 8170 }, 8171 { 8172 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8173 PCI_VENDOR_ID_ADVANTECH, 0x8312) 8174 }, 8175 { 8176 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8177 PCI_VENDOR_ID_DELL, 0x1fe0) 8178 }, 8179 { 8180 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8181 PCI_VENDOR_ID_HP, 0x0600) 8182 }, 8183 { 8184 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8185 PCI_VENDOR_ID_HP, 0x0601) 8186 }, 8187 { 8188 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8189 PCI_VENDOR_ID_HP, 0x0602) 8190 }, 8191 { 8192 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8193 PCI_VENDOR_ID_HP, 0x0603) 8194 }, 8195 { 8196 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8197 PCI_VENDOR_ID_HP, 0x0609) 8198 }, 8199 { 8200 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8201 PCI_VENDOR_ID_HP, 0x0650) 8202 }, 8203 { 8204 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8205 PCI_VENDOR_ID_HP, 0x0651) 8206 }, 8207 { 8208 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8209 PCI_VENDOR_ID_HP, 0x0652) 8210 }, 8211 { 8212 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8213 PCI_VENDOR_ID_HP, 0x0653) 8214 }, 8215 { 8216 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8217 PCI_VENDOR_ID_HP, 0x0654) 8218 }, 8219 { 8220 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8221 PCI_VENDOR_ID_HP, 0x0655) 8222 }, 8223 { 8224 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8225 PCI_VENDOR_ID_HP, 0x0700) 8226 }, 8227 { 8228 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8229 PCI_VENDOR_ID_HP, 0x0701) 8230 }, 8231 { 8232 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8233 PCI_VENDOR_ID_HP, 0x1001) 8234 }, 8235 { 8236 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8237 PCI_VENDOR_ID_HP, 0x1100) 8238 }, 8239 { 8240 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8241 PCI_VENDOR_ID_HP, 0x1101) 8242 }, 8243 { 8244 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f, 8245 PCI_ANY_ID, PCI_ANY_ID) 8246 }, 8247 { 0 } 8248 }; 8249 8250 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table); 8251 8252 static struct pci_driver pqi_pci_driver = { 8253 .name = DRIVER_NAME_SHORT, 8254 .id_table = pqi_pci_id_table, 8255 .probe = pqi_pci_probe, 8256 .remove = pqi_pci_remove, 8257 .shutdown = pqi_shutdown, 8258 #if defined(CONFIG_PM) 8259 .suspend = pqi_suspend, 8260 .resume = pqi_resume, 8261 #endif 8262 }; 8263 8264 static int __init pqi_init(void) 8265 { 8266 int rc; 8267 8268 pr_info(DRIVER_NAME "\n"); 8269 8270 pqi_sas_transport_template = 8271 sas_attach_transport(&pqi_sas_transport_functions); 8272 if (!pqi_sas_transport_template) 8273 return -ENODEV; 8274 8275 pqi_process_module_params(); 8276 8277 rc = pci_register_driver(&pqi_pci_driver); 8278 if (rc) 8279 sas_release_transport(pqi_sas_transport_template); 8280 8281 return rc; 8282 } 8283 8284 static void __exit pqi_cleanup(void) 8285 { 8286 pci_unregister_driver(&pqi_pci_driver); 8287 sas_release_transport(pqi_sas_transport_template); 8288 } 8289 8290 module_init(pqi_init); 8291 module_exit(pqi_cleanup); 8292 8293 static void __attribute__((unused)) verify_structures(void) 8294 { 8295 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8296 sis_host_to_ctrl_doorbell) != 0x20); 8297 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8298 sis_interrupt_mask) != 0x34); 8299 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8300 sis_ctrl_to_host_doorbell) != 0x9c); 8301 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8302 sis_ctrl_to_host_doorbell_clear) != 0xa0); 8303 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8304 sis_driver_scratch) != 0xb0); 8305 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8306 sis_firmware_status) != 0xbc); 8307 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8308 sis_mailbox) != 0x1000); 8309 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers, 8310 pqi_registers) != 0x4000); 8311 8312 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8313 iu_type) != 0x0); 8314 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8315 iu_length) != 0x2); 8316 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8317 response_queue_id) != 0x4); 8318 BUILD_BUG_ON(offsetof(struct pqi_iu_header, 8319 work_area) != 0x6); 8320 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8); 8321 8322 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8323 status) != 0x0); 8324 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8325 service_response) != 0x1); 8326 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8327 data_present) != 0x2); 8328 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8329 reserved) != 0x3); 8330 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8331 residual_count) != 0x4); 8332 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8333 data_length) != 0x8); 8334 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8335 reserved1) != 0xa); 8336 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info, 8337 data) != 0xc); 8338 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c); 8339 8340 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8341 data_in_result) != 0x0); 8342 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8343 data_out_result) != 0x1); 8344 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8345 reserved) != 0x2); 8346 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8347 status) != 0x5); 8348 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8349 status_qualifier) != 0x6); 8350 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8351 sense_data_length) != 0x8); 8352 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8353 response_data_length) != 0xa); 8354 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8355 data_in_transferred) != 0xc); 8356 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8357 data_out_transferred) != 0x10); 8358 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info, 8359 data) != 0x14); 8360 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114); 8361 8362 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8363 signature) != 0x0); 8364 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8365 function_and_status_code) != 0x8); 8366 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8367 max_admin_iq_elements) != 0x10); 8368 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8369 max_admin_oq_elements) != 0x11); 8370 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8371 admin_iq_element_length) != 0x12); 8372 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8373 admin_oq_element_length) != 0x13); 8374 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8375 max_reset_timeout) != 0x14); 8376 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8377 legacy_intx_status) != 0x18); 8378 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8379 legacy_intx_mask_set) != 0x1c); 8380 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8381 legacy_intx_mask_clear) != 0x20); 8382 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8383 device_status) != 0x40); 8384 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8385 admin_iq_pi_offset) != 0x48); 8386 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8387 admin_oq_ci_offset) != 0x50); 8388 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8389 admin_iq_element_array_addr) != 0x58); 8390 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8391 admin_oq_element_array_addr) != 0x60); 8392 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8393 admin_iq_ci_addr) != 0x68); 8394 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8395 admin_oq_pi_addr) != 0x70); 8396 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8397 admin_iq_num_elements) != 0x78); 8398 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8399 admin_oq_num_elements) != 0x79); 8400 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8401 admin_queue_int_msg_num) != 0x7a); 8402 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8403 device_error) != 0x80); 8404 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8405 error_details) != 0x88); 8406 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8407 device_reset) != 0x90); 8408 BUILD_BUG_ON(offsetof(struct pqi_device_registers, 8409 power_action) != 0x94); 8410 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100); 8411 8412 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8413 header.iu_type) != 0); 8414 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8415 header.iu_length) != 2); 8416 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8417 header.work_area) != 6); 8418 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8419 request_id) != 8); 8420 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8421 function_code) != 10); 8422 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8423 data.report_device_capability.buffer_length) != 44); 8424 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8425 data.report_device_capability.sg_descriptor) != 48); 8426 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8427 data.create_operational_iq.queue_id) != 12); 8428 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8429 data.create_operational_iq.element_array_addr) != 16); 8430 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8431 data.create_operational_iq.ci_addr) != 24); 8432 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8433 data.create_operational_iq.num_elements) != 32); 8434 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8435 data.create_operational_iq.element_length) != 34); 8436 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8437 data.create_operational_iq.queue_protocol) != 36); 8438 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8439 data.create_operational_oq.queue_id) != 12); 8440 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8441 data.create_operational_oq.element_array_addr) != 16); 8442 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8443 data.create_operational_oq.pi_addr) != 24); 8444 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8445 data.create_operational_oq.num_elements) != 32); 8446 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8447 data.create_operational_oq.element_length) != 34); 8448 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8449 data.create_operational_oq.queue_protocol) != 36); 8450 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8451 data.create_operational_oq.int_msg_num) != 40); 8452 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8453 data.create_operational_oq.coalescing_count) != 42); 8454 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8455 data.create_operational_oq.min_coalescing_time) != 44); 8456 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8457 data.create_operational_oq.max_coalescing_time) != 48); 8458 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request, 8459 data.delete_operational_queue.queue_id) != 12); 8460 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64); 8461 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 8462 data.create_operational_iq) != 64 - 11); 8463 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 8464 data.create_operational_oq) != 64 - 11); 8465 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request, 8466 data.delete_operational_queue) != 64 - 11); 8467 8468 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8469 header.iu_type) != 0); 8470 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8471 header.iu_length) != 2); 8472 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8473 header.work_area) != 6); 8474 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8475 request_id) != 8); 8476 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8477 function_code) != 10); 8478 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8479 status) != 11); 8480 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8481 data.create_operational_iq.status_descriptor) != 12); 8482 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8483 data.create_operational_iq.iq_pi_offset) != 16); 8484 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8485 data.create_operational_oq.status_descriptor) != 12); 8486 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response, 8487 data.create_operational_oq.oq_ci_offset) != 16); 8488 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64); 8489 8490 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8491 header.iu_type) != 0); 8492 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8493 header.iu_length) != 2); 8494 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8495 header.response_queue_id) != 4); 8496 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8497 header.work_area) != 6); 8498 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8499 request_id) != 8); 8500 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8501 nexus_id) != 10); 8502 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8503 buffer_length) != 12); 8504 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8505 lun_number) != 16); 8506 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8507 protocol_specific) != 24); 8508 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8509 error_index) != 27); 8510 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8511 cdb) != 32); 8512 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request, 8513 sg_descriptors) != 64); 8514 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) != 8515 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 8516 8517 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8518 header.iu_type) != 0); 8519 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8520 header.iu_length) != 2); 8521 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8522 header.response_queue_id) != 4); 8523 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8524 header.work_area) != 6); 8525 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8526 request_id) != 8); 8527 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8528 nexus_id) != 12); 8529 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8530 buffer_length) != 16); 8531 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8532 data_encryption_key_index) != 22); 8533 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8534 encrypt_tweak_lower) != 24); 8535 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8536 encrypt_tweak_upper) != 28); 8537 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8538 cdb) != 32); 8539 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8540 error_index) != 48); 8541 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8542 num_sg_descriptors) != 50); 8543 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8544 cdb_length) != 51); 8545 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8546 lun_number) != 52); 8547 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request, 8548 sg_descriptors) != 64); 8549 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) != 8550 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH); 8551 8552 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8553 header.iu_type) != 0); 8554 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8555 header.iu_length) != 2); 8556 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8557 request_id) != 8); 8558 BUILD_BUG_ON(offsetof(struct pqi_io_response, 8559 error_index) != 10); 8560 8561 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8562 header.iu_type) != 0); 8563 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8564 header.iu_length) != 2); 8565 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8566 header.response_queue_id) != 4); 8567 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8568 request_id) != 8); 8569 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8570 data.report_event_configuration.buffer_length) != 12); 8571 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8572 data.report_event_configuration.sg_descriptors) != 16); 8573 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8574 data.set_event_configuration.global_event_oq_id) != 10); 8575 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8576 data.set_event_configuration.buffer_length) != 12); 8577 BUILD_BUG_ON(offsetof(struct pqi_general_management_request, 8578 data.set_event_configuration.sg_descriptors) != 16); 8579 8580 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 8581 max_inbound_iu_length) != 6); 8582 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor, 8583 max_outbound_iu_length) != 14); 8584 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16); 8585 8586 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8587 data_length) != 0); 8588 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8589 iq_arbitration_priority_support_bitmask) != 8); 8590 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8591 maximum_aw_a) != 9); 8592 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8593 maximum_aw_b) != 10); 8594 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8595 maximum_aw_c) != 11); 8596 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8597 max_inbound_queues) != 16); 8598 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8599 max_elements_per_iq) != 18); 8600 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8601 max_iq_element_length) != 24); 8602 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8603 min_iq_element_length) != 26); 8604 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8605 max_outbound_queues) != 30); 8606 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8607 max_elements_per_oq) != 32); 8608 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8609 intr_coalescing_time_granularity) != 34); 8610 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8611 max_oq_element_length) != 36); 8612 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8613 min_oq_element_length) != 38); 8614 BUILD_BUG_ON(offsetof(struct pqi_device_capability, 8615 iu_layer_descriptors) != 64); 8616 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576); 8617 8618 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 8619 event_type) != 0); 8620 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor, 8621 oq_id) != 2); 8622 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4); 8623 8624 BUILD_BUG_ON(offsetof(struct pqi_event_config, 8625 num_event_descriptors) != 2); 8626 BUILD_BUG_ON(offsetof(struct pqi_event_config, 8627 descriptors) != 4); 8628 8629 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS != 8630 ARRAY_SIZE(pqi_supported_event_types)); 8631 8632 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8633 header.iu_type) != 0); 8634 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8635 header.iu_length) != 2); 8636 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8637 event_type) != 8); 8638 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8639 event_id) != 10); 8640 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8641 additional_event_id) != 12); 8642 BUILD_BUG_ON(offsetof(struct pqi_event_response, 8643 data) != 16); 8644 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32); 8645 8646 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8647 header.iu_type) != 0); 8648 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8649 header.iu_length) != 2); 8650 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8651 event_type) != 8); 8652 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8653 event_id) != 10); 8654 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request, 8655 additional_event_id) != 12); 8656 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16); 8657 8658 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8659 header.iu_type) != 0); 8660 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8661 header.iu_length) != 2); 8662 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8663 request_id) != 8); 8664 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8665 nexus_id) != 10); 8666 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8667 lun_number) != 16); 8668 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8669 protocol_specific) != 24); 8670 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8671 outbound_queue_id_to_manage) != 26); 8672 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8673 request_id_to_manage) != 28); 8674 BUILD_BUG_ON(offsetof(struct pqi_task_management_request, 8675 task_management_function) != 30); 8676 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32); 8677 8678 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8679 header.iu_type) != 0); 8680 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8681 header.iu_length) != 2); 8682 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8683 request_id) != 8); 8684 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8685 nexus_id) != 10); 8686 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8687 additional_response_info) != 12); 8688 BUILD_BUG_ON(offsetof(struct pqi_task_management_response, 8689 response_code) != 15); 8690 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16); 8691 8692 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8693 configured_logical_drive_count) != 0); 8694 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8695 configuration_signature) != 1); 8696 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8697 firmware_version) != 5); 8698 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8699 extended_logical_unit_count) != 154); 8700 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8701 firmware_build_number) != 190); 8702 BUILD_BUG_ON(offsetof(struct bmic_identify_controller, 8703 controller_mode) != 292); 8704 8705 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8706 phys_bay_in_box) != 115); 8707 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8708 device_type) != 120); 8709 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8710 redundant_path_present_map) != 1736); 8711 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8712 active_path_number) != 1738); 8713 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8714 alternate_paths_phys_connector) != 1739); 8715 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8716 alternate_paths_phys_box_on_port) != 1755); 8717 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device, 8718 current_queue_depth_limit) != 1796); 8719 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560); 8720 8721 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255); 8722 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255); 8723 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH % 8724 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 8725 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH % 8726 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 8727 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560); 8728 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH % 8729 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 8730 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560); 8731 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH % 8732 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0); 8733 8734 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS); 8735 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= 8736 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP); 8737 } 8738