1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Driver for Broadcom MPI3 Storage Controllers 4 * 5 * Copyright (C) 2017-2021 Broadcom Inc. 6 * (mailto: mpi3mr-linuxdrv.pdl@broadcom.com) 7 * 8 */ 9 10 #include "mpi3mr.h" 11 12 /* global driver scop variables */ 13 LIST_HEAD(mrioc_list); 14 DEFINE_SPINLOCK(mrioc_list_lock); 15 static int mrioc_ids; 16 static int warn_non_secure_ctlr; 17 18 MODULE_AUTHOR(MPI3MR_DRIVER_AUTHOR); 19 MODULE_DESCRIPTION(MPI3MR_DRIVER_DESC); 20 MODULE_LICENSE(MPI3MR_DRIVER_LICENSE); 21 MODULE_VERSION(MPI3MR_DRIVER_VERSION); 22 23 /* Module parameters*/ 24 int prot_mask = -1; 25 module_param(prot_mask, int, 0); 26 MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07"); 27 28 static int prot_guard_mask = 3; 29 module_param(prot_guard_mask, int, 0); 30 MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3"); 31 static int logging_level; 32 module_param(logging_level, int, 0); 33 MODULE_PARM_DESC(logging_level, 34 " bits for enabling additional logging info (default=0)"); 35 36 /* Forward declarations*/ 37 /** 38 * mpi3mr_host_tag_for_scmd - Get host tag for a scmd 39 * @mrioc: Adapter instance reference 40 * @scmd: SCSI command reference 41 * 42 * Calculate the host tag based on block tag for a given scmd. 43 * 44 * Return: Valid host tag or MPI3MR_HOSTTAG_INVALID. 45 */ 46 static u16 mpi3mr_host_tag_for_scmd(struct mpi3mr_ioc *mrioc, 47 struct scsi_cmnd *scmd) 48 { 49 struct scmd_priv *priv = NULL; 50 u32 unique_tag; 51 u16 host_tag, hw_queue; 52 53 unique_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd)); 54 55 hw_queue = blk_mq_unique_tag_to_hwq(unique_tag); 56 if (hw_queue >= mrioc->num_op_reply_q) 57 return MPI3MR_HOSTTAG_INVALID; 58 host_tag = blk_mq_unique_tag_to_tag(unique_tag); 59 60 if (WARN_ON(host_tag >= mrioc->max_host_ios)) 61 return MPI3MR_HOSTTAG_INVALID; 62 63 priv = scsi_cmd_priv(scmd); 64 /*host_tag 0 is invalid hence incrementing by 1*/ 65 priv->host_tag = host_tag + 1; 66 priv->scmd = scmd; 67 priv->in_lld_scope = 1; 68 priv->req_q_idx = hw_queue; 69 priv->meta_chain_idx = -1; 70 priv->chain_idx = -1; 71 priv->meta_sg_valid = 0; 72 return priv->host_tag; 73 } 74 75 /** 76 * mpi3mr_scmd_from_host_tag - Get SCSI command from host tag 77 * @mrioc: Adapter instance reference 78 * @host_tag: Host tag 79 * @qidx: Operational queue index 80 * 81 * Identify the block tag from the host tag and queue index and 82 * retrieve associated scsi command using scsi_host_find_tag(). 83 * 84 * Return: SCSI command reference or NULL. 85 */ 86 static struct scsi_cmnd *mpi3mr_scmd_from_host_tag( 87 struct mpi3mr_ioc *mrioc, u16 host_tag, u16 qidx) 88 { 89 struct scsi_cmnd *scmd = NULL; 90 struct scmd_priv *priv = NULL; 91 u32 unique_tag = host_tag - 1; 92 93 if (WARN_ON(host_tag > mrioc->max_host_ios)) 94 goto out; 95 96 unique_tag |= (qidx << BLK_MQ_UNIQUE_TAG_BITS); 97 98 scmd = scsi_host_find_tag(mrioc->shost, unique_tag); 99 if (scmd) { 100 priv = scsi_cmd_priv(scmd); 101 if (!priv->in_lld_scope) 102 scmd = NULL; 103 } 104 out: 105 return scmd; 106 } 107 108 /** 109 * mpi3mr_clear_scmd_priv - Cleanup SCSI command private date 110 * @mrioc: Adapter instance reference 111 * @scmd: SCSI command reference 112 * 113 * Invalidate the SCSI command private data to mark the command 114 * is not in LLD scope anymore. 115 * 116 * Return: Nothing. 117 */ 118 static void mpi3mr_clear_scmd_priv(struct mpi3mr_ioc *mrioc, 119 struct scsi_cmnd *scmd) 120 { 121 struct scmd_priv *priv = NULL; 122 123 priv = scsi_cmd_priv(scmd); 124 125 if (WARN_ON(priv->in_lld_scope == 0)) 126 return; 127 priv->host_tag = MPI3MR_HOSTTAG_INVALID; 128 priv->req_q_idx = 0xFFFF; 129 priv->scmd = NULL; 130 priv->in_lld_scope = 0; 131 priv->meta_sg_valid = 0; 132 if (priv->chain_idx >= 0) { 133 clear_bit(priv->chain_idx, mrioc->chain_bitmap); 134 priv->chain_idx = -1; 135 } 136 if (priv->meta_chain_idx >= 0) { 137 clear_bit(priv->meta_chain_idx, mrioc->chain_bitmap); 138 priv->meta_chain_idx = -1; 139 } 140 } 141 142 static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle, 143 struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc); 144 static void mpi3mr_fwevt_worker(struct work_struct *work); 145 146 /** 147 * mpi3mr_fwevt_free - firmware event memory dealloctor 148 * @r: k reference pointer of the firmware event 149 * 150 * Free firmware event memory when no reference. 151 */ 152 static void mpi3mr_fwevt_free(struct kref *r) 153 { 154 kfree(container_of(r, struct mpi3mr_fwevt, ref_count)); 155 } 156 157 /** 158 * mpi3mr_fwevt_get - k reference incrementor 159 * @fwevt: Firmware event reference 160 * 161 * Increment firmware event reference count. 162 */ 163 static void mpi3mr_fwevt_get(struct mpi3mr_fwevt *fwevt) 164 { 165 kref_get(&fwevt->ref_count); 166 } 167 168 /** 169 * mpi3mr_fwevt_put - k reference decrementor 170 * @fwevt: Firmware event reference 171 * 172 * decrement firmware event reference count. 173 */ 174 static void mpi3mr_fwevt_put(struct mpi3mr_fwevt *fwevt) 175 { 176 kref_put(&fwevt->ref_count, mpi3mr_fwevt_free); 177 } 178 179 /** 180 * mpi3mr_alloc_fwevt - Allocate firmware event 181 * @len: length of firmware event data to allocate 182 * 183 * Allocate firmware event with required length and initialize 184 * the reference counter. 185 * 186 * Return: firmware event reference. 187 */ 188 static struct mpi3mr_fwevt *mpi3mr_alloc_fwevt(int len) 189 { 190 struct mpi3mr_fwevt *fwevt; 191 192 fwevt = kzalloc(sizeof(*fwevt) + len, GFP_ATOMIC); 193 if (!fwevt) 194 return NULL; 195 196 kref_init(&fwevt->ref_count); 197 return fwevt; 198 } 199 200 /** 201 * mpi3mr_fwevt_add_to_list - Add firmware event to the list 202 * @mrioc: Adapter instance reference 203 * @fwevt: Firmware event reference 204 * 205 * Add the given firmware event to the firmware event list. 206 * 207 * Return: Nothing. 208 */ 209 static void mpi3mr_fwevt_add_to_list(struct mpi3mr_ioc *mrioc, 210 struct mpi3mr_fwevt *fwevt) 211 { 212 unsigned long flags; 213 214 if (!mrioc->fwevt_worker_thread) 215 return; 216 217 spin_lock_irqsave(&mrioc->fwevt_lock, flags); 218 /* get fwevt reference count while adding it to fwevt_list */ 219 mpi3mr_fwevt_get(fwevt); 220 INIT_LIST_HEAD(&fwevt->list); 221 list_add_tail(&fwevt->list, &mrioc->fwevt_list); 222 INIT_WORK(&fwevt->work, mpi3mr_fwevt_worker); 223 /* get fwevt reference count while enqueueing it to worker queue */ 224 mpi3mr_fwevt_get(fwevt); 225 queue_work(mrioc->fwevt_worker_thread, &fwevt->work); 226 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); 227 } 228 229 /** 230 * mpi3mr_fwevt_del_from_list - Delete firmware event from list 231 * @mrioc: Adapter instance reference 232 * @fwevt: Firmware event reference 233 * 234 * Delete the given firmware event from the firmware event list. 235 * 236 * Return: Nothing. 237 */ 238 static void mpi3mr_fwevt_del_from_list(struct mpi3mr_ioc *mrioc, 239 struct mpi3mr_fwevt *fwevt) 240 { 241 unsigned long flags; 242 243 spin_lock_irqsave(&mrioc->fwevt_lock, flags); 244 if (!list_empty(&fwevt->list)) { 245 list_del_init(&fwevt->list); 246 /* 247 * Put fwevt reference count after 248 * removing it from fwevt_list 249 */ 250 mpi3mr_fwevt_put(fwevt); 251 } 252 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); 253 } 254 255 /** 256 * mpi3mr_dequeue_fwevt - Dequeue firmware event from the list 257 * @mrioc: Adapter instance reference 258 * 259 * Dequeue a firmware event from the firmware event list. 260 * 261 * Return: firmware event. 262 */ 263 static struct mpi3mr_fwevt *mpi3mr_dequeue_fwevt( 264 struct mpi3mr_ioc *mrioc) 265 { 266 unsigned long flags; 267 struct mpi3mr_fwevt *fwevt = NULL; 268 269 spin_lock_irqsave(&mrioc->fwevt_lock, flags); 270 if (!list_empty(&mrioc->fwevt_list)) { 271 fwevt = list_first_entry(&mrioc->fwevt_list, 272 struct mpi3mr_fwevt, list); 273 list_del_init(&fwevt->list); 274 /* 275 * Put fwevt reference count after 276 * removing it from fwevt_list 277 */ 278 mpi3mr_fwevt_put(fwevt); 279 } 280 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); 281 282 return fwevt; 283 } 284 285 /** 286 * mpi3mr_cleanup_fwevt_list - Cleanup firmware event list 287 * @mrioc: Adapter instance reference 288 * 289 * Flush all pending firmware events from the firmware event 290 * list. 291 * 292 * Return: Nothing. 293 */ 294 void mpi3mr_cleanup_fwevt_list(struct mpi3mr_ioc *mrioc) 295 { 296 struct mpi3mr_fwevt *fwevt = NULL; 297 298 if ((list_empty(&mrioc->fwevt_list) && !mrioc->current_event) || 299 !mrioc->fwevt_worker_thread) 300 return; 301 302 while ((fwevt = mpi3mr_dequeue_fwevt(mrioc)) || 303 (fwevt = mrioc->current_event)) { 304 /* 305 * Wait on the fwevt to complete. If this returns 1, then 306 * the event was never executed, and we need a put for the 307 * reference the work had on the fwevt. 308 * 309 * If it did execute, we wait for it to finish, and the put will 310 * happen from mpi3mr_process_fwevt() 311 */ 312 if (cancel_work_sync(&fwevt->work)) { 313 /* 314 * Put fwevt reference count after 315 * dequeuing it from worker queue 316 */ 317 mpi3mr_fwevt_put(fwevt); 318 /* 319 * Put fwevt reference count to neutralize 320 * kref_init increment 321 */ 322 mpi3mr_fwevt_put(fwevt); 323 } 324 } 325 } 326 327 /** 328 * mpi3mr_invalidate_devhandles -Invalidate device handles 329 * @mrioc: Adapter instance reference 330 * 331 * Invalidate the device handles in the target device structures 332 * . Called post reset prior to reinitializing the controller. 333 * 334 * Return: Nothing. 335 */ 336 void mpi3mr_invalidate_devhandles(struct mpi3mr_ioc *mrioc) 337 { 338 struct mpi3mr_tgt_dev *tgtdev; 339 struct mpi3mr_stgt_priv_data *tgt_priv; 340 341 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) { 342 tgtdev->dev_handle = MPI3MR_INVALID_DEV_HANDLE; 343 if (tgtdev->starget && tgtdev->starget->hostdata) { 344 tgt_priv = tgtdev->starget->hostdata; 345 tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE; 346 } 347 } 348 } 349 350 /** 351 * mpi3mr_print_scmd - print individual SCSI command 352 * @rq: Block request 353 * @data: Adapter instance reference 354 * @reserved: N/A. Currently not used 355 * 356 * Print the SCSI command details if it is in LLD scope. 357 * 358 * Return: true always. 359 */ 360 static bool mpi3mr_print_scmd(struct request *rq, 361 void *data, bool reserved) 362 { 363 struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data; 364 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); 365 struct scmd_priv *priv = NULL; 366 367 if (scmd) { 368 priv = scsi_cmd_priv(scmd); 369 if (!priv->in_lld_scope) 370 goto out; 371 372 ioc_info(mrioc, "%s :Host Tag = %d, qid = %d\n", 373 __func__, priv->host_tag, priv->req_q_idx + 1); 374 scsi_print_command(scmd); 375 } 376 377 out: 378 return(true); 379 } 380 381 /** 382 * mpi3mr_flush_scmd - Flush individual SCSI command 383 * @rq: Block request 384 * @data: Adapter instance reference 385 * @reserved: N/A. Currently not used 386 * 387 * Return the SCSI command to the upper layers if it is in LLD 388 * scope. 389 * 390 * Return: true always. 391 */ 392 393 static bool mpi3mr_flush_scmd(struct request *rq, 394 void *data, bool reserved) 395 { 396 struct mpi3mr_ioc *mrioc = (struct mpi3mr_ioc *)data; 397 struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); 398 struct scmd_priv *priv = NULL; 399 400 if (scmd) { 401 priv = scsi_cmd_priv(scmd); 402 if (!priv->in_lld_scope) 403 goto out; 404 405 if (priv->meta_sg_valid) 406 dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd), 407 scsi_prot_sg_count(scmd), scmd->sc_data_direction); 408 mpi3mr_clear_scmd_priv(mrioc, scmd); 409 scsi_dma_unmap(scmd); 410 scmd->result = DID_RESET << 16; 411 scsi_print_command(scmd); 412 scsi_done(scmd); 413 mrioc->flush_io_count++; 414 } 415 416 out: 417 return(true); 418 } 419 420 /** 421 * mpi3mr_flush_host_io - Flush host I/Os 422 * @mrioc: Adapter instance reference 423 * 424 * Flush all of the pending I/Os by calling 425 * blk_mq_tagset_busy_iter() for each possible tag. This is 426 * executed post controller reset 427 * 428 * Return: Nothing. 429 */ 430 void mpi3mr_flush_host_io(struct mpi3mr_ioc *mrioc) 431 { 432 struct Scsi_Host *shost = mrioc->shost; 433 434 mrioc->flush_io_count = 0; 435 ioc_info(mrioc, "%s :Flushing Host I/O cmds post reset\n", __func__); 436 blk_mq_tagset_busy_iter(&shost->tag_set, 437 mpi3mr_flush_scmd, (void *)mrioc); 438 ioc_info(mrioc, "%s :Flushed %d Host I/O cmds\n", __func__, 439 mrioc->flush_io_count); 440 } 441 442 /** 443 * mpi3mr_alloc_tgtdev - target device allocator 444 * 445 * Allocate target device instance and initialize the reference 446 * count 447 * 448 * Return: target device instance. 449 */ 450 static struct mpi3mr_tgt_dev *mpi3mr_alloc_tgtdev(void) 451 { 452 struct mpi3mr_tgt_dev *tgtdev; 453 454 tgtdev = kzalloc(sizeof(*tgtdev), GFP_ATOMIC); 455 if (!tgtdev) 456 return NULL; 457 kref_init(&tgtdev->ref_count); 458 return tgtdev; 459 } 460 461 /** 462 * mpi3mr_tgtdev_add_to_list -Add tgtdevice to the list 463 * @mrioc: Adapter instance reference 464 * @tgtdev: Target device 465 * 466 * Add the target device to the target device list 467 * 468 * Return: Nothing. 469 */ 470 static void mpi3mr_tgtdev_add_to_list(struct mpi3mr_ioc *mrioc, 471 struct mpi3mr_tgt_dev *tgtdev) 472 { 473 unsigned long flags; 474 475 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 476 mpi3mr_tgtdev_get(tgtdev); 477 INIT_LIST_HEAD(&tgtdev->list); 478 list_add_tail(&tgtdev->list, &mrioc->tgtdev_list); 479 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 480 } 481 482 /** 483 * mpi3mr_tgtdev_del_from_list -Delete tgtdevice from the list 484 * @mrioc: Adapter instance reference 485 * @tgtdev: Target device 486 * 487 * Remove the target device from the target device list 488 * 489 * Return: Nothing. 490 */ 491 static void mpi3mr_tgtdev_del_from_list(struct mpi3mr_ioc *mrioc, 492 struct mpi3mr_tgt_dev *tgtdev) 493 { 494 unsigned long flags; 495 496 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 497 if (!list_empty(&tgtdev->list)) { 498 list_del_init(&tgtdev->list); 499 mpi3mr_tgtdev_put(tgtdev); 500 } 501 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 502 } 503 504 /** 505 * __mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle 506 * @mrioc: Adapter instance reference 507 * @handle: Device handle 508 * 509 * Accessor to retrieve target device from the device handle. 510 * Non Lock version 511 * 512 * Return: Target device reference. 513 */ 514 static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_handle( 515 struct mpi3mr_ioc *mrioc, u16 handle) 516 { 517 struct mpi3mr_tgt_dev *tgtdev; 518 519 assert_spin_locked(&mrioc->tgtdev_lock); 520 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) 521 if (tgtdev->dev_handle == handle) 522 goto found_tgtdev; 523 return NULL; 524 525 found_tgtdev: 526 mpi3mr_tgtdev_get(tgtdev); 527 return tgtdev; 528 } 529 530 /** 531 * mpi3mr_get_tgtdev_by_handle -Get tgtdev from device handle 532 * @mrioc: Adapter instance reference 533 * @handle: Device handle 534 * 535 * Accessor to retrieve target device from the device handle. 536 * Lock version 537 * 538 * Return: Target device reference. 539 */ 540 static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_handle( 541 struct mpi3mr_ioc *mrioc, u16 handle) 542 { 543 struct mpi3mr_tgt_dev *tgtdev; 544 unsigned long flags; 545 546 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 547 tgtdev = __mpi3mr_get_tgtdev_by_handle(mrioc, handle); 548 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 549 return tgtdev; 550 } 551 552 /** 553 * __mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persist ID 554 * @mrioc: Adapter instance reference 555 * @persist_id: Persistent ID 556 * 557 * Accessor to retrieve target device from the Persistent ID. 558 * Non Lock version 559 * 560 * Return: Target device reference. 561 */ 562 static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_by_perst_id( 563 struct mpi3mr_ioc *mrioc, u16 persist_id) 564 { 565 struct mpi3mr_tgt_dev *tgtdev; 566 567 assert_spin_locked(&mrioc->tgtdev_lock); 568 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) 569 if (tgtdev->perst_id == persist_id) 570 goto found_tgtdev; 571 return NULL; 572 573 found_tgtdev: 574 mpi3mr_tgtdev_get(tgtdev); 575 return tgtdev; 576 } 577 578 /** 579 * mpi3mr_get_tgtdev_by_perst_id -Get tgtdev from persistent ID 580 * @mrioc: Adapter instance reference 581 * @persist_id: Persistent ID 582 * 583 * Accessor to retrieve target device from the Persistent ID. 584 * Lock version 585 * 586 * Return: Target device reference. 587 */ 588 static struct mpi3mr_tgt_dev *mpi3mr_get_tgtdev_by_perst_id( 589 struct mpi3mr_ioc *mrioc, u16 persist_id) 590 { 591 struct mpi3mr_tgt_dev *tgtdev; 592 unsigned long flags; 593 594 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 595 tgtdev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, persist_id); 596 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 597 return tgtdev; 598 } 599 600 /** 601 * __mpi3mr_get_tgtdev_from_tgtpriv -Get tgtdev from tgt private 602 * @mrioc: Adapter instance reference 603 * @tgt_priv: Target private data 604 * 605 * Accessor to return target device from the target private 606 * data. Non Lock version 607 * 608 * Return: Target device reference. 609 */ 610 static struct mpi3mr_tgt_dev *__mpi3mr_get_tgtdev_from_tgtpriv( 611 struct mpi3mr_ioc *mrioc, struct mpi3mr_stgt_priv_data *tgt_priv) 612 { 613 struct mpi3mr_tgt_dev *tgtdev; 614 615 assert_spin_locked(&mrioc->tgtdev_lock); 616 tgtdev = tgt_priv->tgt_dev; 617 if (tgtdev) 618 mpi3mr_tgtdev_get(tgtdev); 619 return tgtdev; 620 } 621 622 /** 623 * mpi3mr_remove_tgtdev_from_host - Remove dev from upper layers 624 * @mrioc: Adapter instance reference 625 * @tgtdev: Target device structure 626 * 627 * Checks whether the device is exposed to upper layers and if it 628 * is then remove the device from upper layers by calling 629 * scsi_remove_target(). 630 * 631 * Return: 0 on success, non zero on failure. 632 */ 633 static void mpi3mr_remove_tgtdev_from_host(struct mpi3mr_ioc *mrioc, 634 struct mpi3mr_tgt_dev *tgtdev) 635 { 636 struct mpi3mr_stgt_priv_data *tgt_priv; 637 638 ioc_info(mrioc, "%s :Removing handle(0x%04x), wwid(0x%016llx)\n", 639 __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid); 640 if (tgtdev->starget && tgtdev->starget->hostdata) { 641 tgt_priv = tgtdev->starget->hostdata; 642 tgt_priv->dev_handle = MPI3MR_INVALID_DEV_HANDLE; 643 } 644 645 if (tgtdev->starget) { 646 scsi_remove_target(&tgtdev->starget->dev); 647 tgtdev->host_exposed = 0; 648 } 649 ioc_info(mrioc, "%s :Removed handle(0x%04x), wwid(0x%016llx)\n", 650 __func__, tgtdev->dev_handle, (unsigned long long)tgtdev->wwid); 651 } 652 653 /** 654 * mpi3mr_report_tgtdev_to_host - Expose device to upper layers 655 * @mrioc: Adapter instance reference 656 * @perst_id: Persistent ID of the device 657 * 658 * Checks whether the device can be exposed to upper layers and 659 * if it is not then expose the device to upper layers by 660 * calling scsi_scan_target(). 661 * 662 * Return: 0 on success, non zero on failure. 663 */ 664 static int mpi3mr_report_tgtdev_to_host(struct mpi3mr_ioc *mrioc, 665 u16 perst_id) 666 { 667 int retval = 0; 668 struct mpi3mr_tgt_dev *tgtdev; 669 670 tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id); 671 if (!tgtdev) { 672 retval = -1; 673 goto out; 674 } 675 if (tgtdev->is_hidden) { 676 retval = -1; 677 goto out; 678 } 679 if (!tgtdev->host_exposed && !mrioc->reset_in_progress) { 680 tgtdev->host_exposed = 1; 681 scsi_scan_target(&mrioc->shost->shost_gendev, 0, 682 tgtdev->perst_id, 683 SCAN_WILD_CARD, SCSI_SCAN_INITIAL); 684 if (!tgtdev->starget) 685 tgtdev->host_exposed = 0; 686 } 687 out: 688 if (tgtdev) 689 mpi3mr_tgtdev_put(tgtdev); 690 691 return retval; 692 } 693 694 /** 695 * mpi3mr_change_queue_depth- Change QD callback handler 696 * @sdev: SCSI device reference 697 * @q_depth: Queue depth 698 * 699 * Validate and limit QD and call scsi_change_queue_depth. 700 * 701 * Return: return value of scsi_change_queue_depth 702 */ 703 static int mpi3mr_change_queue_depth(struct scsi_device *sdev, 704 int q_depth) 705 { 706 struct scsi_target *starget = scsi_target(sdev); 707 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 708 int retval = 0; 709 710 if (!sdev->tagged_supported) 711 q_depth = 1; 712 if (q_depth > shost->can_queue) 713 q_depth = shost->can_queue; 714 else if (!q_depth) 715 q_depth = MPI3MR_DEFAULT_SDEV_QD; 716 retval = scsi_change_queue_depth(sdev, q_depth); 717 718 return retval; 719 } 720 721 /** 722 * mpi3mr_update_sdev - Update SCSI device information 723 * @sdev: SCSI device reference 724 * @data: target device reference 725 * 726 * This is an iterator function called for each SCSI device in a 727 * target to update the target specific information into each 728 * SCSI device. 729 * 730 * Return: Nothing. 731 */ 732 static void 733 mpi3mr_update_sdev(struct scsi_device *sdev, void *data) 734 { 735 struct mpi3mr_tgt_dev *tgtdev; 736 737 tgtdev = (struct mpi3mr_tgt_dev *)data; 738 if (!tgtdev) 739 return; 740 741 mpi3mr_change_queue_depth(sdev, tgtdev->q_depth); 742 switch (tgtdev->dev_type) { 743 case MPI3_DEVICE_DEVFORM_PCIE: 744 /*The block layer hw sector size = 512*/ 745 if ((tgtdev->dev_spec.pcie_inf.dev_info & 746 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == 747 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) { 748 blk_queue_max_hw_sectors(sdev->request_queue, 749 tgtdev->dev_spec.pcie_inf.mdts / 512); 750 if (tgtdev->dev_spec.pcie_inf.pgsz == 0) 751 blk_queue_virt_boundary(sdev->request_queue, 752 ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1)); 753 else 754 blk_queue_virt_boundary(sdev->request_queue, 755 ((1 << tgtdev->dev_spec.pcie_inf.pgsz) - 1)); 756 } 757 break; 758 default: 759 break; 760 } 761 } 762 763 /** 764 * mpi3mr_rfresh_tgtdevs - Refresh target device exposure 765 * @mrioc: Adapter instance reference 766 * 767 * This is executed post controller reset to identify any 768 * missing devices during reset and remove from the upper layers 769 * or expose any newly detected device to the upper layers. 770 * 771 * Return: Nothing. 772 */ 773 774 void mpi3mr_rfresh_tgtdevs(struct mpi3mr_ioc *mrioc) 775 { 776 struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next; 777 778 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list, 779 list) { 780 if ((tgtdev->dev_handle == MPI3MR_INVALID_DEV_HANDLE) && 781 tgtdev->host_exposed) { 782 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); 783 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); 784 mpi3mr_tgtdev_put(tgtdev); 785 } 786 } 787 788 tgtdev = NULL; 789 list_for_each_entry(tgtdev, &mrioc->tgtdev_list, list) { 790 if ((tgtdev->dev_handle != MPI3MR_INVALID_DEV_HANDLE) && 791 !tgtdev->is_hidden && !tgtdev->host_exposed) 792 mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id); 793 } 794 } 795 796 /** 797 * mpi3mr_update_tgtdev - DevStatusChange evt bottomhalf 798 * @mrioc: Adapter instance reference 799 * @tgtdev: Target device internal structure 800 * @dev_pg0: New device page0 801 * 802 * Update the information from the device page0 into the driver 803 * cached target device structure. 804 * 805 * Return: Nothing. 806 */ 807 static void mpi3mr_update_tgtdev(struct mpi3mr_ioc *mrioc, 808 struct mpi3mr_tgt_dev *tgtdev, struct mpi3_device_page0 *dev_pg0) 809 { 810 u16 flags = 0; 811 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; 812 u8 prot_mask = 0; 813 814 tgtdev->perst_id = le16_to_cpu(dev_pg0->persistent_id); 815 tgtdev->dev_handle = le16_to_cpu(dev_pg0->dev_handle); 816 tgtdev->dev_type = dev_pg0->device_form; 817 tgtdev->encl_handle = le16_to_cpu(dev_pg0->enclosure_handle); 818 tgtdev->parent_handle = le16_to_cpu(dev_pg0->parent_dev_handle); 819 tgtdev->slot = le16_to_cpu(dev_pg0->slot); 820 tgtdev->q_depth = le16_to_cpu(dev_pg0->queue_depth); 821 tgtdev->wwid = le64_to_cpu(dev_pg0->wwid); 822 823 flags = le16_to_cpu(dev_pg0->flags); 824 tgtdev->is_hidden = (flags & MPI3_DEVICE0_FLAGS_HIDDEN); 825 826 if (tgtdev->starget && tgtdev->starget->hostdata) { 827 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) 828 tgtdev->starget->hostdata; 829 scsi_tgt_priv_data->perst_id = tgtdev->perst_id; 830 scsi_tgt_priv_data->dev_handle = tgtdev->dev_handle; 831 scsi_tgt_priv_data->dev_type = tgtdev->dev_type; 832 } 833 834 switch (dev_pg0->access_status) { 835 case MPI3_DEVICE0_ASTATUS_NO_ERRORS: 836 case MPI3_DEVICE0_ASTATUS_PREPARE: 837 case MPI3_DEVICE0_ASTATUS_NEEDS_INITIALIZATION: 838 case MPI3_DEVICE0_ASTATUS_DEVICE_MISSING_DELAY: 839 break; 840 default: 841 tgtdev->is_hidden = 1; 842 break; 843 } 844 845 switch (tgtdev->dev_type) { 846 case MPI3_DEVICE_DEVFORM_SAS_SATA: 847 { 848 struct mpi3_device0_sas_sata_format *sasinf = 849 &dev_pg0->device_specific.sas_sata_format; 850 u16 dev_info = le16_to_cpu(sasinf->device_info); 851 852 tgtdev->dev_spec.sas_sata_inf.dev_info = dev_info; 853 tgtdev->dev_spec.sas_sata_inf.sas_address = 854 le64_to_cpu(sasinf->sas_address); 855 if ((dev_info & MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_MASK) != 856 MPI3_SAS_DEVICE_INFO_DEVICE_TYPE_END_DEVICE) 857 tgtdev->is_hidden = 1; 858 else if (!(dev_info & (MPI3_SAS_DEVICE_INFO_STP_SATA_TARGET | 859 MPI3_SAS_DEVICE_INFO_SSP_TARGET))) 860 tgtdev->is_hidden = 1; 861 break; 862 } 863 case MPI3_DEVICE_DEVFORM_PCIE: 864 { 865 struct mpi3_device0_pcie_format *pcieinf = 866 &dev_pg0->device_specific.pcie_format; 867 u16 dev_info = le16_to_cpu(pcieinf->device_info); 868 869 tgtdev->dev_spec.pcie_inf.dev_info = dev_info; 870 tgtdev->dev_spec.pcie_inf.capb = 871 le32_to_cpu(pcieinf->capabilities); 872 tgtdev->dev_spec.pcie_inf.mdts = MPI3MR_DEFAULT_MDTS; 873 /* 2^12 = 4096 */ 874 tgtdev->dev_spec.pcie_inf.pgsz = 12; 875 if (dev_pg0->access_status == MPI3_DEVICE0_ASTATUS_NO_ERRORS) { 876 tgtdev->dev_spec.pcie_inf.mdts = 877 le32_to_cpu(pcieinf->maximum_data_transfer_size); 878 tgtdev->dev_spec.pcie_inf.pgsz = pcieinf->page_size; 879 tgtdev->dev_spec.pcie_inf.reset_to = 880 max_t(u8, pcieinf->controller_reset_to, 881 MPI3MR_INTADMCMD_TIMEOUT); 882 tgtdev->dev_spec.pcie_inf.abort_to = 883 max_t(u8, pcieinf->nvme_abort_to, 884 MPI3MR_INTADMCMD_TIMEOUT); 885 } 886 if (tgtdev->dev_spec.pcie_inf.mdts > (1024 * 1024)) 887 tgtdev->dev_spec.pcie_inf.mdts = (1024 * 1024); 888 if (((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) != 889 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) && 890 ((dev_info & MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) != 891 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_SCSI_DEVICE)) 892 tgtdev->is_hidden = 1; 893 if (!mrioc->shost) 894 break; 895 prot_mask = scsi_host_get_prot(mrioc->shost); 896 if (prot_mask & SHOST_DIX_TYPE0_PROTECTION) { 897 scsi_host_set_prot(mrioc->shost, prot_mask & 0x77); 898 ioc_info(mrioc, 899 "%s : Disabling DIX0 prot capability\n", __func__); 900 ioc_info(mrioc, 901 "because HBA does not support DIX0 operation on NVME drives\n"); 902 } 903 break; 904 } 905 case MPI3_DEVICE_DEVFORM_VD: 906 { 907 struct mpi3_device0_vd_format *vdinf = 908 &dev_pg0->device_specific.vd_format; 909 910 tgtdev->dev_spec.vol_inf.state = vdinf->vd_state; 911 if (vdinf->vd_state == MPI3_DEVICE0_VD_STATE_OFFLINE) 912 tgtdev->is_hidden = 1; 913 break; 914 } 915 default: 916 break; 917 } 918 } 919 920 /** 921 * mpi3mr_devstatuschg_evt_bh - DevStatusChange evt bottomhalf 922 * @mrioc: Adapter instance reference 923 * @fwevt: Firmware event information. 924 * 925 * Process Device status Change event and based on device's new 926 * information, either expose the device to the upper layers, or 927 * remove the device from upper layers. 928 * 929 * Return: Nothing. 930 */ 931 static void mpi3mr_devstatuschg_evt_bh(struct mpi3mr_ioc *mrioc, 932 struct mpi3mr_fwevt *fwevt) 933 { 934 u16 dev_handle = 0; 935 u8 uhide = 0, delete = 0, cleanup = 0; 936 struct mpi3mr_tgt_dev *tgtdev = NULL; 937 struct mpi3_event_data_device_status_change *evtdata = 938 (struct mpi3_event_data_device_status_change *)fwevt->event_data; 939 940 dev_handle = le16_to_cpu(evtdata->dev_handle); 941 ioc_info(mrioc, 942 "%s :device status change: handle(0x%04x): reason code(0x%x)\n", 943 __func__, dev_handle, evtdata->reason_code); 944 switch (evtdata->reason_code) { 945 case MPI3_EVENT_DEV_STAT_RC_HIDDEN: 946 delete = 1; 947 break; 948 case MPI3_EVENT_DEV_STAT_RC_NOT_HIDDEN: 949 uhide = 1; 950 break; 951 case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING: 952 delete = 1; 953 cleanup = 1; 954 break; 955 default: 956 ioc_info(mrioc, "%s :Unhandled reason code(0x%x)\n", __func__, 957 evtdata->reason_code); 958 break; 959 } 960 961 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle); 962 if (!tgtdev) 963 goto out; 964 if (uhide) { 965 tgtdev->is_hidden = 0; 966 if (!tgtdev->host_exposed) 967 mpi3mr_report_tgtdev_to_host(mrioc, tgtdev->perst_id); 968 } 969 if (tgtdev->starget && tgtdev->starget->hostdata) { 970 if (delete) 971 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); 972 } 973 if (cleanup) { 974 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); 975 mpi3mr_tgtdev_put(tgtdev); 976 } 977 978 out: 979 if (tgtdev) 980 mpi3mr_tgtdev_put(tgtdev); 981 } 982 983 /** 984 * mpi3mr_devinfochg_evt_bh - DeviceInfoChange evt bottomhalf 985 * @mrioc: Adapter instance reference 986 * @dev_pg0: New device page0 987 * 988 * Process Device Info Change event and based on device's new 989 * information, either expose the device to the upper layers, or 990 * remove the device from upper layers or update the details of 991 * the device. 992 * 993 * Return: Nothing. 994 */ 995 static void mpi3mr_devinfochg_evt_bh(struct mpi3mr_ioc *mrioc, 996 struct mpi3_device_page0 *dev_pg0) 997 { 998 struct mpi3mr_tgt_dev *tgtdev = NULL; 999 u16 dev_handle = 0, perst_id = 0; 1000 1001 perst_id = le16_to_cpu(dev_pg0->persistent_id); 1002 dev_handle = le16_to_cpu(dev_pg0->dev_handle); 1003 ioc_info(mrioc, 1004 "%s :Device info change: handle(0x%04x): persist_id(0x%x)\n", 1005 __func__, dev_handle, perst_id); 1006 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle); 1007 if (!tgtdev) 1008 goto out; 1009 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0); 1010 if (!tgtdev->is_hidden && !tgtdev->host_exposed) 1011 mpi3mr_report_tgtdev_to_host(mrioc, perst_id); 1012 if (tgtdev->is_hidden && tgtdev->host_exposed) 1013 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); 1014 if (!tgtdev->is_hidden && tgtdev->host_exposed && tgtdev->starget) 1015 starget_for_each_device(tgtdev->starget, (void *)tgtdev, 1016 mpi3mr_update_sdev); 1017 out: 1018 if (tgtdev) 1019 mpi3mr_tgtdev_put(tgtdev); 1020 } 1021 1022 /** 1023 * mpi3mr_sastopochg_evt_debug - SASTopoChange details 1024 * @mrioc: Adapter instance reference 1025 * @event_data: SAS topology change list event data 1026 * 1027 * Prints information about the SAS topology change event. 1028 * 1029 * Return: Nothing. 1030 */ 1031 static void 1032 mpi3mr_sastopochg_evt_debug(struct mpi3mr_ioc *mrioc, 1033 struct mpi3_event_data_sas_topology_change_list *event_data) 1034 { 1035 int i; 1036 u16 handle; 1037 u8 reason_code, phy_number; 1038 char *status_str = NULL; 1039 u8 link_rate, prev_link_rate; 1040 1041 switch (event_data->exp_status) { 1042 case MPI3_EVENT_SAS_TOPO_ES_NOT_RESPONDING: 1043 status_str = "remove"; 1044 break; 1045 case MPI3_EVENT_SAS_TOPO_ES_RESPONDING: 1046 status_str = "responding"; 1047 break; 1048 case MPI3_EVENT_SAS_TOPO_ES_DELAY_NOT_RESPONDING: 1049 status_str = "remove delay"; 1050 break; 1051 case MPI3_EVENT_SAS_TOPO_ES_NO_EXPANDER: 1052 status_str = "direct attached"; 1053 break; 1054 default: 1055 status_str = "unknown status"; 1056 break; 1057 } 1058 ioc_info(mrioc, "%s :sas topology change: (%s)\n", 1059 __func__, status_str); 1060 ioc_info(mrioc, 1061 "%s :\texpander_handle(0x%04x), enclosure_handle(0x%04x) start_phy(%02d), num_entries(%d)\n", 1062 __func__, le16_to_cpu(event_data->expander_dev_handle), 1063 le16_to_cpu(event_data->enclosure_handle), 1064 event_data->start_phy_num, event_data->num_entries); 1065 for (i = 0; i < event_data->num_entries; i++) { 1066 handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle); 1067 if (!handle) 1068 continue; 1069 phy_number = event_data->start_phy_num + i; 1070 reason_code = event_data->phy_entry[i].status & 1071 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK; 1072 switch (reason_code) { 1073 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING: 1074 status_str = "target remove"; 1075 break; 1076 case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING: 1077 status_str = "delay target remove"; 1078 break; 1079 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED: 1080 status_str = "link status change"; 1081 break; 1082 case MPI3_EVENT_SAS_TOPO_PHY_RC_NO_CHANGE: 1083 status_str = "link status no change"; 1084 break; 1085 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING: 1086 status_str = "target responding"; 1087 break; 1088 default: 1089 status_str = "unknown"; 1090 break; 1091 } 1092 link_rate = event_data->phy_entry[i].link_rate >> 4; 1093 prev_link_rate = event_data->phy_entry[i].link_rate & 0xF; 1094 ioc_info(mrioc, 1095 "%s :\tphy(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n", 1096 __func__, phy_number, handle, status_str, link_rate, 1097 prev_link_rate); 1098 } 1099 } 1100 1101 /** 1102 * mpi3mr_sastopochg_evt_bh - SASTopologyChange evt bottomhalf 1103 * @mrioc: Adapter instance reference 1104 * @fwevt: Firmware event reference 1105 * 1106 * Prints information about the SAS topology change event and 1107 * for "not responding" event code, removes the device from the 1108 * upper layers. 1109 * 1110 * Return: Nothing. 1111 */ 1112 static void mpi3mr_sastopochg_evt_bh(struct mpi3mr_ioc *mrioc, 1113 struct mpi3mr_fwevt *fwevt) 1114 { 1115 struct mpi3_event_data_sas_topology_change_list *event_data = 1116 (struct mpi3_event_data_sas_topology_change_list *)fwevt->event_data; 1117 int i; 1118 u16 handle; 1119 u8 reason_code; 1120 struct mpi3mr_tgt_dev *tgtdev = NULL; 1121 1122 mpi3mr_sastopochg_evt_debug(mrioc, event_data); 1123 1124 for (i = 0; i < event_data->num_entries; i++) { 1125 handle = le16_to_cpu(event_data->phy_entry[i].attached_dev_handle); 1126 if (!handle) 1127 continue; 1128 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); 1129 if (!tgtdev) 1130 continue; 1131 1132 reason_code = event_data->phy_entry[i].status & 1133 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK; 1134 1135 switch (reason_code) { 1136 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING: 1137 if (tgtdev->host_exposed) 1138 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); 1139 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); 1140 mpi3mr_tgtdev_put(tgtdev); 1141 break; 1142 default: 1143 break; 1144 } 1145 if (tgtdev) 1146 mpi3mr_tgtdev_put(tgtdev); 1147 } 1148 } 1149 1150 /** 1151 * mpi3mr_pcietopochg_evt_debug - PCIeTopoChange details 1152 * @mrioc: Adapter instance reference 1153 * @event_data: PCIe topology change list event data 1154 * 1155 * Prints information about the PCIe topology change event. 1156 * 1157 * Return: Nothing. 1158 */ 1159 static void 1160 mpi3mr_pcietopochg_evt_debug(struct mpi3mr_ioc *mrioc, 1161 struct mpi3_event_data_pcie_topology_change_list *event_data) 1162 { 1163 int i; 1164 u16 handle; 1165 u16 reason_code; 1166 u8 port_number; 1167 char *status_str = NULL; 1168 u8 link_rate, prev_link_rate; 1169 1170 switch (event_data->switch_status) { 1171 case MPI3_EVENT_PCIE_TOPO_SS_NOT_RESPONDING: 1172 status_str = "remove"; 1173 break; 1174 case MPI3_EVENT_PCIE_TOPO_SS_RESPONDING: 1175 status_str = "responding"; 1176 break; 1177 case MPI3_EVENT_PCIE_TOPO_SS_DELAY_NOT_RESPONDING: 1178 status_str = "remove delay"; 1179 break; 1180 case MPI3_EVENT_PCIE_TOPO_SS_NO_PCIE_SWITCH: 1181 status_str = "direct attached"; 1182 break; 1183 default: 1184 status_str = "unknown status"; 1185 break; 1186 } 1187 ioc_info(mrioc, "%s :pcie topology change: (%s)\n", 1188 __func__, status_str); 1189 ioc_info(mrioc, 1190 "%s :\tswitch_handle(0x%04x), enclosure_handle(0x%04x) start_port(%02d), num_entries(%d)\n", 1191 __func__, le16_to_cpu(event_data->switch_dev_handle), 1192 le16_to_cpu(event_data->enclosure_handle), 1193 event_data->start_port_num, event_data->num_entries); 1194 for (i = 0; i < event_data->num_entries; i++) { 1195 handle = 1196 le16_to_cpu(event_data->port_entry[i].attached_dev_handle); 1197 if (!handle) 1198 continue; 1199 port_number = event_data->start_port_num + i; 1200 reason_code = event_data->port_entry[i].port_status; 1201 switch (reason_code) { 1202 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING: 1203 status_str = "target remove"; 1204 break; 1205 case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING: 1206 status_str = "delay target remove"; 1207 break; 1208 case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED: 1209 status_str = "link status change"; 1210 break; 1211 case MPI3_EVENT_PCIE_TOPO_PS_NO_CHANGE: 1212 status_str = "link status no change"; 1213 break; 1214 case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING: 1215 status_str = "target responding"; 1216 break; 1217 default: 1218 status_str = "unknown"; 1219 break; 1220 } 1221 link_rate = event_data->port_entry[i].current_port_info & 1222 MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK; 1223 prev_link_rate = event_data->port_entry[i].previous_port_info & 1224 MPI3_EVENT_PCIE_TOPO_PI_RATE_MASK; 1225 ioc_info(mrioc, 1226 "%s :\tport(%02d), attached_handle(0x%04x): %s: link rate: new(0x%02x), old(0x%02x)\n", 1227 __func__, port_number, handle, status_str, link_rate, 1228 prev_link_rate); 1229 } 1230 } 1231 1232 /** 1233 * mpi3mr_pcietopochg_evt_bh - PCIeTopologyChange evt bottomhalf 1234 * @mrioc: Adapter instance reference 1235 * @fwevt: Firmware event reference 1236 * 1237 * Prints information about the PCIe topology change event and 1238 * for "not responding" event code, removes the device from the 1239 * upper layers. 1240 * 1241 * Return: Nothing. 1242 */ 1243 static void mpi3mr_pcietopochg_evt_bh(struct mpi3mr_ioc *mrioc, 1244 struct mpi3mr_fwevt *fwevt) 1245 { 1246 struct mpi3_event_data_pcie_topology_change_list *event_data = 1247 (struct mpi3_event_data_pcie_topology_change_list *)fwevt->event_data; 1248 int i; 1249 u16 handle; 1250 u8 reason_code; 1251 struct mpi3mr_tgt_dev *tgtdev = NULL; 1252 1253 mpi3mr_pcietopochg_evt_debug(mrioc, event_data); 1254 1255 for (i = 0; i < event_data->num_entries; i++) { 1256 handle = 1257 le16_to_cpu(event_data->port_entry[i].attached_dev_handle); 1258 if (!handle) 1259 continue; 1260 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); 1261 if (!tgtdev) 1262 continue; 1263 1264 reason_code = event_data->port_entry[i].port_status; 1265 1266 switch (reason_code) { 1267 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING: 1268 if (tgtdev->host_exposed) 1269 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); 1270 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); 1271 mpi3mr_tgtdev_put(tgtdev); 1272 break; 1273 default: 1274 break; 1275 } 1276 if (tgtdev) 1277 mpi3mr_tgtdev_put(tgtdev); 1278 } 1279 } 1280 1281 /** 1282 * mpi3mr_fwevt_bh - Firmware event bottomhalf handler 1283 * @mrioc: Adapter instance reference 1284 * @fwevt: Firmware event reference 1285 * 1286 * Identifies the firmware event and calls corresponding bottomg 1287 * half handler and sends event acknowledgment if required. 1288 * 1289 * Return: Nothing. 1290 */ 1291 static void mpi3mr_fwevt_bh(struct mpi3mr_ioc *mrioc, 1292 struct mpi3mr_fwevt *fwevt) 1293 { 1294 mrioc->current_event = fwevt; 1295 mpi3mr_fwevt_del_from_list(mrioc, fwevt); 1296 1297 if (mrioc->stop_drv_processing) 1298 goto out; 1299 1300 if (!fwevt->process_evt) 1301 goto evt_ack; 1302 1303 switch (fwevt->event_id) { 1304 case MPI3_EVENT_DEVICE_ADDED: 1305 { 1306 struct mpi3_device_page0 *dev_pg0 = 1307 (struct mpi3_device_page0 *)fwevt->event_data; 1308 mpi3mr_report_tgtdev_to_host(mrioc, 1309 le16_to_cpu(dev_pg0->persistent_id)); 1310 break; 1311 } 1312 case MPI3_EVENT_DEVICE_INFO_CHANGED: 1313 { 1314 mpi3mr_devinfochg_evt_bh(mrioc, 1315 (struct mpi3_device_page0 *)fwevt->event_data); 1316 break; 1317 } 1318 case MPI3_EVENT_DEVICE_STATUS_CHANGE: 1319 { 1320 mpi3mr_devstatuschg_evt_bh(mrioc, fwevt); 1321 break; 1322 } 1323 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST: 1324 { 1325 mpi3mr_sastopochg_evt_bh(mrioc, fwevt); 1326 break; 1327 } 1328 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST: 1329 { 1330 mpi3mr_pcietopochg_evt_bh(mrioc, fwevt); 1331 break; 1332 } 1333 default: 1334 break; 1335 } 1336 1337 evt_ack: 1338 if (fwevt->send_ack) 1339 mpi3mr_send_event_ack(mrioc, fwevt->event_id, 1340 fwevt->evt_ctx); 1341 out: 1342 /* Put fwevt reference count to neutralize kref_init increment */ 1343 mpi3mr_fwevt_put(fwevt); 1344 mrioc->current_event = NULL; 1345 } 1346 1347 /** 1348 * mpi3mr_fwevt_worker - Firmware event worker 1349 * @work: Work struct containing firmware event 1350 * 1351 * Extracts the firmware event and calls mpi3mr_fwevt_bh. 1352 * 1353 * Return: Nothing. 1354 */ 1355 static void mpi3mr_fwevt_worker(struct work_struct *work) 1356 { 1357 struct mpi3mr_fwevt *fwevt = container_of(work, struct mpi3mr_fwevt, 1358 work); 1359 mpi3mr_fwevt_bh(fwevt->mrioc, fwevt); 1360 /* 1361 * Put fwevt reference count after 1362 * dequeuing it from worker queue 1363 */ 1364 mpi3mr_fwevt_put(fwevt); 1365 } 1366 1367 /** 1368 * mpi3mr_create_tgtdev - Create and add a target device 1369 * @mrioc: Adapter instance reference 1370 * @dev_pg0: Device Page 0 data 1371 * 1372 * If the device specified by the device page 0 data is not 1373 * present in the driver's internal list, allocate the memory 1374 * for the device, populate the data and add to the list, else 1375 * update the device data. The key is persistent ID. 1376 * 1377 * Return: 0 on success, -ENOMEM on memory allocation failure 1378 */ 1379 static int mpi3mr_create_tgtdev(struct mpi3mr_ioc *mrioc, 1380 struct mpi3_device_page0 *dev_pg0) 1381 { 1382 int retval = 0; 1383 struct mpi3mr_tgt_dev *tgtdev = NULL; 1384 u16 perst_id = 0; 1385 1386 perst_id = le16_to_cpu(dev_pg0->persistent_id); 1387 tgtdev = mpi3mr_get_tgtdev_by_perst_id(mrioc, perst_id); 1388 if (tgtdev) { 1389 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0); 1390 mpi3mr_tgtdev_put(tgtdev); 1391 } else { 1392 tgtdev = mpi3mr_alloc_tgtdev(); 1393 if (!tgtdev) 1394 return -ENOMEM; 1395 mpi3mr_update_tgtdev(mrioc, tgtdev, dev_pg0); 1396 mpi3mr_tgtdev_add_to_list(mrioc, tgtdev); 1397 } 1398 1399 return retval; 1400 } 1401 1402 /** 1403 * mpi3mr_flush_delayed_rmhs_list - Flush pending commands 1404 * @mrioc: Adapter instance reference 1405 * 1406 * Flush pending commands in the delayed removal handshake list 1407 * due to a controller reset or driver removal as a cleanup. 1408 * 1409 * Return: Nothing 1410 */ 1411 void mpi3mr_flush_delayed_rmhs_list(struct mpi3mr_ioc *mrioc) 1412 { 1413 struct delayed_dev_rmhs_node *_rmhs_node; 1414 1415 while (!list_empty(&mrioc->delayed_rmhs_list)) { 1416 _rmhs_node = list_entry(mrioc->delayed_rmhs_list.next, 1417 struct delayed_dev_rmhs_node, list); 1418 list_del(&_rmhs_node->list); 1419 kfree(_rmhs_node); 1420 } 1421 } 1422 1423 /** 1424 * mpi3mr_dev_rmhs_complete_iou - Device removal IOUC completion 1425 * @mrioc: Adapter instance reference 1426 * @drv_cmd: Internal command tracker 1427 * 1428 * Issues a target reset TM to the firmware from the device 1429 * removal TM pend list or retry the removal handshake sequence 1430 * based on the IOU control request IOC status. 1431 * 1432 * Return: Nothing 1433 */ 1434 static void mpi3mr_dev_rmhs_complete_iou(struct mpi3mr_ioc *mrioc, 1435 struct mpi3mr_drv_cmd *drv_cmd) 1436 { 1437 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN; 1438 struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL; 1439 1440 ioc_info(mrioc, 1441 "%s :dev_rmhs_iouctrl_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x)\n", 1442 __func__, drv_cmd->dev_handle, drv_cmd->ioc_status, 1443 drv_cmd->ioc_loginfo); 1444 if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) { 1445 if (drv_cmd->retry_count < MPI3MR_DEV_RMHS_RETRY_COUNT) { 1446 drv_cmd->retry_count++; 1447 ioc_info(mrioc, 1448 "%s :dev_rmhs_iouctrl_complete: handle(0x%04x)retrying handshake retry=%d\n", 1449 __func__, drv_cmd->dev_handle, 1450 drv_cmd->retry_count); 1451 mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle, 1452 drv_cmd, drv_cmd->iou_rc); 1453 return; 1454 } 1455 ioc_err(mrioc, 1456 "%s :dev removal handshake failed after all retries: handle(0x%04x)\n", 1457 __func__, drv_cmd->dev_handle); 1458 } else { 1459 ioc_info(mrioc, 1460 "%s :dev removal handshake completed successfully: handle(0x%04x)\n", 1461 __func__, drv_cmd->dev_handle); 1462 clear_bit(drv_cmd->dev_handle, mrioc->removepend_bitmap); 1463 } 1464 1465 if (!list_empty(&mrioc->delayed_rmhs_list)) { 1466 delayed_dev_rmhs = list_entry(mrioc->delayed_rmhs_list.next, 1467 struct delayed_dev_rmhs_node, list); 1468 drv_cmd->dev_handle = delayed_dev_rmhs->handle; 1469 drv_cmd->retry_count = 0; 1470 drv_cmd->iou_rc = delayed_dev_rmhs->iou_rc; 1471 ioc_info(mrioc, 1472 "%s :dev_rmhs_iouctrl_complete: processing delayed TM: handle(0x%04x)\n", 1473 __func__, drv_cmd->dev_handle); 1474 mpi3mr_dev_rmhs_send_tm(mrioc, drv_cmd->dev_handle, drv_cmd, 1475 drv_cmd->iou_rc); 1476 list_del(&delayed_dev_rmhs->list); 1477 kfree(delayed_dev_rmhs); 1478 return; 1479 } 1480 drv_cmd->state = MPI3MR_CMD_NOTUSED; 1481 drv_cmd->callback = NULL; 1482 drv_cmd->retry_count = 0; 1483 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE; 1484 clear_bit(cmd_idx, mrioc->devrem_bitmap); 1485 } 1486 1487 /** 1488 * mpi3mr_dev_rmhs_complete_tm - Device removal TM completion 1489 * @mrioc: Adapter instance reference 1490 * @drv_cmd: Internal command tracker 1491 * 1492 * Issues a target reset TM to the firmware from the device 1493 * removal TM pend list or issue IO unit control request as 1494 * part of device removal or hidden acknowledgment handshake. 1495 * 1496 * Return: Nothing 1497 */ 1498 static void mpi3mr_dev_rmhs_complete_tm(struct mpi3mr_ioc *mrioc, 1499 struct mpi3mr_drv_cmd *drv_cmd) 1500 { 1501 struct mpi3_iounit_control_request iou_ctrl; 1502 u16 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN; 1503 struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL; 1504 int retval; 1505 1506 if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID) 1507 tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply; 1508 1509 if (tm_reply) 1510 pr_info(IOCNAME 1511 "dev_rmhs_tr_complete:handle(0x%04x), ioc_status(0x%04x), loginfo(0x%08x), term_count(%d)\n", 1512 mrioc->name, drv_cmd->dev_handle, drv_cmd->ioc_status, 1513 drv_cmd->ioc_loginfo, 1514 le32_to_cpu(tm_reply->termination_count)); 1515 1516 pr_info(IOCNAME "Issuing IOU CTL: handle(0x%04x) dev_rmhs idx(%d)\n", 1517 mrioc->name, drv_cmd->dev_handle, cmd_idx); 1518 1519 memset(&iou_ctrl, 0, sizeof(iou_ctrl)); 1520 1521 drv_cmd->state = MPI3MR_CMD_PENDING; 1522 drv_cmd->is_waiting = 0; 1523 drv_cmd->callback = mpi3mr_dev_rmhs_complete_iou; 1524 iou_ctrl.operation = drv_cmd->iou_rc; 1525 iou_ctrl.param16[0] = cpu_to_le16(drv_cmd->dev_handle); 1526 iou_ctrl.host_tag = cpu_to_le16(drv_cmd->host_tag); 1527 iou_ctrl.function = MPI3_FUNCTION_IO_UNIT_CONTROL; 1528 1529 retval = mpi3mr_admin_request_post(mrioc, &iou_ctrl, sizeof(iou_ctrl), 1530 1); 1531 if (retval) { 1532 pr_err(IOCNAME "Issue DevRmHsTMIOUCTL: Admin post failed\n", 1533 mrioc->name); 1534 goto out_failed; 1535 } 1536 1537 return; 1538 out_failed: 1539 drv_cmd->state = MPI3MR_CMD_NOTUSED; 1540 drv_cmd->callback = NULL; 1541 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE; 1542 drv_cmd->retry_count = 0; 1543 clear_bit(cmd_idx, mrioc->devrem_bitmap); 1544 } 1545 1546 /** 1547 * mpi3mr_dev_rmhs_send_tm - Issue TM for device removal 1548 * @mrioc: Adapter instance reference 1549 * @handle: Device handle 1550 * @cmdparam: Internal command tracker 1551 * @iou_rc: IO unit reason code 1552 * 1553 * Issues a target reset TM to the firmware or add it to a pend 1554 * list as part of device removal or hidden acknowledgment 1555 * handshake. 1556 * 1557 * Return: Nothing 1558 */ 1559 static void mpi3mr_dev_rmhs_send_tm(struct mpi3mr_ioc *mrioc, u16 handle, 1560 struct mpi3mr_drv_cmd *cmdparam, u8 iou_rc) 1561 { 1562 struct mpi3_scsi_task_mgmt_request tm_req; 1563 int retval = 0; 1564 u16 cmd_idx = MPI3MR_NUM_DEVRMCMD; 1565 u8 retrycount = 5; 1566 struct mpi3mr_drv_cmd *drv_cmd = cmdparam; 1567 struct delayed_dev_rmhs_node *delayed_dev_rmhs = NULL; 1568 1569 if (drv_cmd) 1570 goto issue_cmd; 1571 do { 1572 cmd_idx = find_first_zero_bit(mrioc->devrem_bitmap, 1573 MPI3MR_NUM_DEVRMCMD); 1574 if (cmd_idx < MPI3MR_NUM_DEVRMCMD) { 1575 if (!test_and_set_bit(cmd_idx, mrioc->devrem_bitmap)) 1576 break; 1577 cmd_idx = MPI3MR_NUM_DEVRMCMD; 1578 } 1579 } while (retrycount--); 1580 1581 if (cmd_idx >= MPI3MR_NUM_DEVRMCMD) { 1582 delayed_dev_rmhs = kzalloc(sizeof(*delayed_dev_rmhs), 1583 GFP_ATOMIC); 1584 if (!delayed_dev_rmhs) 1585 return; 1586 INIT_LIST_HEAD(&delayed_dev_rmhs->list); 1587 delayed_dev_rmhs->handle = handle; 1588 delayed_dev_rmhs->iou_rc = iou_rc; 1589 list_add_tail(&delayed_dev_rmhs->list, 1590 &mrioc->delayed_rmhs_list); 1591 ioc_info(mrioc, "%s :DevRmHs: tr:handle(0x%04x) is postponed\n", 1592 __func__, handle); 1593 return; 1594 } 1595 drv_cmd = &mrioc->dev_rmhs_cmds[cmd_idx]; 1596 1597 issue_cmd: 1598 cmd_idx = drv_cmd->host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN; 1599 ioc_info(mrioc, 1600 "%s :Issuing TR TM: for devhandle 0x%04x with dev_rmhs %d\n", 1601 __func__, handle, cmd_idx); 1602 1603 memset(&tm_req, 0, sizeof(tm_req)); 1604 if (drv_cmd->state & MPI3MR_CMD_PENDING) { 1605 ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__); 1606 goto out; 1607 } 1608 drv_cmd->state = MPI3MR_CMD_PENDING; 1609 drv_cmd->is_waiting = 0; 1610 drv_cmd->callback = mpi3mr_dev_rmhs_complete_tm; 1611 drv_cmd->dev_handle = handle; 1612 drv_cmd->iou_rc = iou_rc; 1613 tm_req.dev_handle = cpu_to_le16(handle); 1614 tm_req.task_type = MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET; 1615 tm_req.host_tag = cpu_to_le16(drv_cmd->host_tag); 1616 tm_req.task_host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INVALID); 1617 tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT; 1618 1619 set_bit(handle, mrioc->removepend_bitmap); 1620 retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1); 1621 if (retval) { 1622 ioc_err(mrioc, "%s :Issue DevRmHsTM: Admin Post failed\n", 1623 __func__); 1624 goto out_failed; 1625 } 1626 out: 1627 return; 1628 out_failed: 1629 drv_cmd->state = MPI3MR_CMD_NOTUSED; 1630 drv_cmd->callback = NULL; 1631 drv_cmd->dev_handle = MPI3MR_INVALID_DEV_HANDLE; 1632 drv_cmd->retry_count = 0; 1633 clear_bit(cmd_idx, mrioc->devrem_bitmap); 1634 } 1635 1636 /** 1637 * mpi3mr_pcietopochg_evt_th - PCIETopologyChange evt tophalf 1638 * @mrioc: Adapter instance reference 1639 * @event_reply: event data 1640 * 1641 * Checks for the reason code and based on that either block I/O 1642 * to device, or unblock I/O to the device, or start the device 1643 * removal handshake with reason as remove with the firmware for 1644 * PCIe devices. 1645 * 1646 * Return: Nothing 1647 */ 1648 static void mpi3mr_pcietopochg_evt_th(struct mpi3mr_ioc *mrioc, 1649 struct mpi3_event_notification_reply *event_reply) 1650 { 1651 struct mpi3_event_data_pcie_topology_change_list *topo_evt = 1652 (struct mpi3_event_data_pcie_topology_change_list *)event_reply->event_data; 1653 int i; 1654 u16 handle; 1655 u8 reason_code; 1656 struct mpi3mr_tgt_dev *tgtdev = NULL; 1657 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; 1658 1659 for (i = 0; i < topo_evt->num_entries; i++) { 1660 handle = le16_to_cpu(topo_evt->port_entry[i].attached_dev_handle); 1661 if (!handle) 1662 continue; 1663 reason_code = topo_evt->port_entry[i].port_status; 1664 scsi_tgt_priv_data = NULL; 1665 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); 1666 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata) 1667 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) 1668 tgtdev->starget->hostdata; 1669 switch (reason_code) { 1670 case MPI3_EVENT_PCIE_TOPO_PS_NOT_RESPONDING: 1671 if (scsi_tgt_priv_data) { 1672 scsi_tgt_priv_data->dev_removed = 1; 1673 scsi_tgt_priv_data->dev_removedelay = 0; 1674 atomic_set(&scsi_tgt_priv_data->block_io, 0); 1675 } 1676 mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL, 1677 MPI3_CTRL_OP_REMOVE_DEVICE); 1678 break; 1679 case MPI3_EVENT_PCIE_TOPO_PS_DELAY_NOT_RESPONDING: 1680 if (scsi_tgt_priv_data) { 1681 scsi_tgt_priv_data->dev_removedelay = 1; 1682 atomic_inc(&scsi_tgt_priv_data->block_io); 1683 } 1684 break; 1685 case MPI3_EVENT_PCIE_TOPO_PS_RESPONDING: 1686 if (scsi_tgt_priv_data && 1687 scsi_tgt_priv_data->dev_removedelay) { 1688 scsi_tgt_priv_data->dev_removedelay = 0; 1689 atomic_dec_if_positive 1690 (&scsi_tgt_priv_data->block_io); 1691 } 1692 break; 1693 case MPI3_EVENT_PCIE_TOPO_PS_PORT_CHANGED: 1694 default: 1695 break; 1696 } 1697 if (tgtdev) 1698 mpi3mr_tgtdev_put(tgtdev); 1699 } 1700 } 1701 1702 /** 1703 * mpi3mr_sastopochg_evt_th - SASTopologyChange evt tophalf 1704 * @mrioc: Adapter instance reference 1705 * @event_reply: event data 1706 * 1707 * Checks for the reason code and based on that either block I/O 1708 * to device, or unblock I/O to the device, or start the device 1709 * removal handshake with reason as remove with the firmware for 1710 * SAS/SATA devices. 1711 * 1712 * Return: Nothing 1713 */ 1714 static void mpi3mr_sastopochg_evt_th(struct mpi3mr_ioc *mrioc, 1715 struct mpi3_event_notification_reply *event_reply) 1716 { 1717 struct mpi3_event_data_sas_topology_change_list *topo_evt = 1718 (struct mpi3_event_data_sas_topology_change_list *)event_reply->event_data; 1719 int i; 1720 u16 handle; 1721 u8 reason_code; 1722 struct mpi3mr_tgt_dev *tgtdev = NULL; 1723 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; 1724 1725 for (i = 0; i < topo_evt->num_entries; i++) { 1726 handle = le16_to_cpu(topo_evt->phy_entry[i].attached_dev_handle); 1727 if (!handle) 1728 continue; 1729 reason_code = topo_evt->phy_entry[i].status & 1730 MPI3_EVENT_SAS_TOPO_PHY_RC_MASK; 1731 scsi_tgt_priv_data = NULL; 1732 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); 1733 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata) 1734 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) 1735 tgtdev->starget->hostdata; 1736 switch (reason_code) { 1737 case MPI3_EVENT_SAS_TOPO_PHY_RC_TARG_NOT_RESPONDING: 1738 if (scsi_tgt_priv_data) { 1739 scsi_tgt_priv_data->dev_removed = 1; 1740 scsi_tgt_priv_data->dev_removedelay = 0; 1741 atomic_set(&scsi_tgt_priv_data->block_io, 0); 1742 } 1743 mpi3mr_dev_rmhs_send_tm(mrioc, handle, NULL, 1744 MPI3_CTRL_OP_REMOVE_DEVICE); 1745 break; 1746 case MPI3_EVENT_SAS_TOPO_PHY_RC_DELAY_NOT_RESPONDING: 1747 if (scsi_tgt_priv_data) { 1748 scsi_tgt_priv_data->dev_removedelay = 1; 1749 atomic_inc(&scsi_tgt_priv_data->block_io); 1750 } 1751 break; 1752 case MPI3_EVENT_SAS_TOPO_PHY_RC_RESPONDING: 1753 if (scsi_tgt_priv_data && 1754 scsi_tgt_priv_data->dev_removedelay) { 1755 scsi_tgt_priv_data->dev_removedelay = 0; 1756 atomic_dec_if_positive 1757 (&scsi_tgt_priv_data->block_io); 1758 } 1759 break; 1760 case MPI3_EVENT_SAS_TOPO_PHY_RC_PHY_CHANGED: 1761 default: 1762 break; 1763 } 1764 if (tgtdev) 1765 mpi3mr_tgtdev_put(tgtdev); 1766 } 1767 } 1768 1769 /** 1770 * mpi3mr_devstatuschg_evt_th - DeviceStatusChange evt tophalf 1771 * @mrioc: Adapter instance reference 1772 * @event_reply: event data 1773 * 1774 * Checks for the reason code and based on that either block I/O 1775 * to device, or unblock I/O to the device, or start the device 1776 * removal handshake with reason as remove/hide acknowledgment 1777 * with the firmware. 1778 * 1779 * Return: Nothing 1780 */ 1781 static void mpi3mr_devstatuschg_evt_th(struct mpi3mr_ioc *mrioc, 1782 struct mpi3_event_notification_reply *event_reply) 1783 { 1784 u16 dev_handle = 0; 1785 u8 ublock = 0, block = 0, hide = 0, delete = 0, remove = 0; 1786 struct mpi3mr_tgt_dev *tgtdev = NULL; 1787 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; 1788 struct mpi3_event_data_device_status_change *evtdata = 1789 (struct mpi3_event_data_device_status_change *)event_reply->event_data; 1790 1791 if (mrioc->stop_drv_processing) 1792 goto out; 1793 1794 dev_handle = le16_to_cpu(evtdata->dev_handle); 1795 1796 switch (evtdata->reason_code) { 1797 case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_STRT: 1798 case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_STRT: 1799 block = 1; 1800 break; 1801 case MPI3_EVENT_DEV_STAT_RC_HIDDEN: 1802 delete = 1; 1803 hide = 1; 1804 break; 1805 case MPI3_EVENT_DEV_STAT_RC_VD_NOT_RESPONDING: 1806 delete = 1; 1807 remove = 1; 1808 break; 1809 case MPI3_EVENT_DEV_STAT_RC_INT_DEVICE_RESET_CMP: 1810 case MPI3_EVENT_DEV_STAT_RC_INT_IT_NEXUS_RESET_CMP: 1811 ublock = 1; 1812 break; 1813 default: 1814 break; 1815 } 1816 1817 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, dev_handle); 1818 if (!tgtdev) 1819 goto out; 1820 if (hide) 1821 tgtdev->is_hidden = hide; 1822 if (tgtdev->starget && tgtdev->starget->hostdata) { 1823 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) 1824 tgtdev->starget->hostdata; 1825 if (block) 1826 atomic_inc(&scsi_tgt_priv_data->block_io); 1827 if (delete) 1828 scsi_tgt_priv_data->dev_removed = 1; 1829 if (ublock) 1830 atomic_dec_if_positive(&scsi_tgt_priv_data->block_io); 1831 } 1832 if (remove) 1833 mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL, 1834 MPI3_CTRL_OP_REMOVE_DEVICE); 1835 if (hide) 1836 mpi3mr_dev_rmhs_send_tm(mrioc, dev_handle, NULL, 1837 MPI3_CTRL_OP_HIDDEN_ACK); 1838 1839 out: 1840 if (tgtdev) 1841 mpi3mr_tgtdev_put(tgtdev); 1842 } 1843 1844 /** 1845 * mpi3mr_energypackchg_evt_th - Energy pack change evt tophalf 1846 * @mrioc: Adapter instance reference 1847 * @event_reply: event data 1848 * 1849 * Identifies the new shutdown timeout value and update. 1850 * 1851 * Return: Nothing 1852 */ 1853 static void mpi3mr_energypackchg_evt_th(struct mpi3mr_ioc *mrioc, 1854 struct mpi3_event_notification_reply *event_reply) 1855 { 1856 struct mpi3_event_data_energy_pack_change *evtdata = 1857 (struct mpi3_event_data_energy_pack_change *)event_reply->event_data; 1858 u16 shutdown_timeout = le16_to_cpu(evtdata->shutdown_timeout); 1859 1860 if (shutdown_timeout <= 0) { 1861 ioc_warn(mrioc, 1862 "%s :Invalid Shutdown Timeout received = %d\n", 1863 __func__, shutdown_timeout); 1864 return; 1865 } 1866 1867 ioc_info(mrioc, 1868 "%s :Previous Shutdown Timeout Value = %d New Shutdown Timeout Value = %d\n", 1869 __func__, mrioc->facts.shutdown_timeout, shutdown_timeout); 1870 mrioc->facts.shutdown_timeout = shutdown_timeout; 1871 } 1872 1873 /** 1874 * mpi3mr_os_handle_events - Firmware event handler 1875 * @mrioc: Adapter instance reference 1876 * @event_reply: event data 1877 * 1878 * Identify whteher the event has to handled and acknowledged 1879 * and either process the event in the tophalf and/or schedule a 1880 * bottom half through mpi3mr_fwevt_worker. 1881 * 1882 * Return: Nothing 1883 */ 1884 void mpi3mr_os_handle_events(struct mpi3mr_ioc *mrioc, 1885 struct mpi3_event_notification_reply *event_reply) 1886 { 1887 u16 evt_type, sz; 1888 struct mpi3mr_fwevt *fwevt = NULL; 1889 bool ack_req = 0, process_evt_bh = 0; 1890 1891 if (mrioc->stop_drv_processing) 1892 return; 1893 1894 if ((event_reply->msg_flags & MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_MASK) 1895 == MPI3_EVENT_NOTIFY_MSGFLAGS_ACK_REQUIRED) 1896 ack_req = 1; 1897 1898 evt_type = event_reply->event; 1899 1900 switch (evt_type) { 1901 case MPI3_EVENT_DEVICE_ADDED: 1902 { 1903 struct mpi3_device_page0 *dev_pg0 = 1904 (struct mpi3_device_page0 *)event_reply->event_data; 1905 if (mpi3mr_create_tgtdev(mrioc, dev_pg0)) 1906 ioc_err(mrioc, 1907 "%s :Failed to add device in the device add event\n", 1908 __func__); 1909 else 1910 process_evt_bh = 1; 1911 break; 1912 } 1913 case MPI3_EVENT_DEVICE_STATUS_CHANGE: 1914 { 1915 process_evt_bh = 1; 1916 mpi3mr_devstatuschg_evt_th(mrioc, event_reply); 1917 break; 1918 } 1919 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST: 1920 { 1921 process_evt_bh = 1; 1922 mpi3mr_sastopochg_evt_th(mrioc, event_reply); 1923 break; 1924 } 1925 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST: 1926 { 1927 process_evt_bh = 1; 1928 mpi3mr_pcietopochg_evt_th(mrioc, event_reply); 1929 break; 1930 } 1931 case MPI3_EVENT_DEVICE_INFO_CHANGED: 1932 { 1933 process_evt_bh = 1; 1934 break; 1935 } 1936 case MPI3_EVENT_ENERGY_PACK_CHANGE: 1937 { 1938 mpi3mr_energypackchg_evt_th(mrioc, event_reply); 1939 break; 1940 } 1941 case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE: 1942 case MPI3_EVENT_SAS_DISCOVERY: 1943 case MPI3_EVENT_CABLE_MGMT: 1944 case MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR: 1945 case MPI3_EVENT_SAS_BROADCAST_PRIMITIVE: 1946 case MPI3_EVENT_PCIE_ENUMERATION: 1947 break; 1948 default: 1949 ioc_info(mrioc, "%s :event 0x%02x is not handled\n", 1950 __func__, evt_type); 1951 break; 1952 } 1953 if (process_evt_bh || ack_req) { 1954 sz = event_reply->event_data_length * 4; 1955 fwevt = mpi3mr_alloc_fwevt(sz); 1956 if (!fwevt) { 1957 ioc_info(mrioc, "%s :failure at %s:%d/%s()!\n", 1958 __func__, __FILE__, __LINE__, __func__); 1959 return; 1960 } 1961 1962 memcpy(fwevt->event_data, event_reply->event_data, sz); 1963 fwevt->mrioc = mrioc; 1964 fwevt->event_id = evt_type; 1965 fwevt->send_ack = ack_req; 1966 fwevt->process_evt = process_evt_bh; 1967 fwevt->evt_ctx = le32_to_cpu(event_reply->event_context); 1968 mpi3mr_fwevt_add_to_list(mrioc, fwevt); 1969 } 1970 } 1971 1972 /** 1973 * mpi3mr_setup_eedp - Setup EEDP information in MPI3 SCSI IO 1974 * @mrioc: Adapter instance reference 1975 * @scmd: SCSI command reference 1976 * @scsiio_req: MPI3 SCSI IO request 1977 * 1978 * Identifies the protection information flags from the SCSI 1979 * command and set appropriate flags in the MPI3 SCSI IO 1980 * request. 1981 * 1982 * Return: Nothing 1983 */ 1984 static void mpi3mr_setup_eedp(struct mpi3mr_ioc *mrioc, 1985 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req) 1986 { 1987 u16 eedp_flags = 0; 1988 unsigned char prot_op = scsi_get_prot_op(scmd); 1989 1990 switch (prot_op) { 1991 case SCSI_PROT_NORMAL: 1992 return; 1993 case SCSI_PROT_READ_STRIP: 1994 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE; 1995 break; 1996 case SCSI_PROT_WRITE_INSERT: 1997 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT; 1998 break; 1999 case SCSI_PROT_READ_INSERT: 2000 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_INSERT; 2001 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID; 2002 break; 2003 case SCSI_PROT_WRITE_STRIP: 2004 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REMOVE; 2005 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID; 2006 break; 2007 case SCSI_PROT_READ_PASS: 2008 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK; 2009 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID; 2010 break; 2011 case SCSI_PROT_WRITE_PASS: 2012 if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM) { 2013 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK_REGEN; 2014 scsiio_req->sgl[0].eedp.application_tag_translation_mask = 2015 0xffff; 2016 } else 2017 eedp_flags = MPI3_EEDPFLAGS_EEDP_OP_CHECK; 2018 2019 scsiio_req->msg_flags |= MPI3_SCSIIO_MSGFLAGS_METASGL_VALID; 2020 break; 2021 default: 2022 return; 2023 } 2024 2025 if (scmd->prot_flags & SCSI_PROT_GUARD_CHECK) 2026 eedp_flags |= MPI3_EEDPFLAGS_CHK_GUARD; 2027 2028 if (scmd->prot_flags & SCSI_PROT_IP_CHECKSUM) 2029 eedp_flags |= MPI3_EEDPFLAGS_HOST_GUARD_IP_CHKSUM; 2030 2031 if (scmd->prot_flags & SCSI_PROT_REF_CHECK) { 2032 eedp_flags |= MPI3_EEDPFLAGS_CHK_REF_TAG | 2033 MPI3_EEDPFLAGS_INCR_PRI_REF_TAG; 2034 scsiio_req->cdb.eedp32.primary_reference_tag = 2035 cpu_to_be32(scsi_prot_ref_tag(scmd)); 2036 } 2037 2038 if (scmd->prot_flags & SCSI_PROT_REF_INCREMENT) 2039 eedp_flags |= MPI3_EEDPFLAGS_INCR_PRI_REF_TAG; 2040 2041 eedp_flags |= MPI3_EEDPFLAGS_ESC_MODE_APPTAG_DISABLE; 2042 2043 switch (scsi_prot_interval(scmd)) { 2044 case 512: 2045 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_512; 2046 break; 2047 case 520: 2048 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_520; 2049 break; 2050 case 4080: 2051 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4080; 2052 break; 2053 case 4088: 2054 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4088; 2055 break; 2056 case 4096: 2057 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4096; 2058 break; 2059 case 4104: 2060 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4104; 2061 break; 2062 case 4160: 2063 scsiio_req->sgl[0].eedp.user_data_size = MPI3_EEDP_UDS_4160; 2064 break; 2065 default: 2066 break; 2067 } 2068 2069 scsiio_req->sgl[0].eedp.eedp_flags = cpu_to_le16(eedp_flags); 2070 scsiio_req->sgl[0].eedp.flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED; 2071 } 2072 2073 /** 2074 * mpi3mr_build_sense_buffer - Map sense information 2075 * @desc: Sense type 2076 * @buf: Sense buffer to populate 2077 * @key: Sense key 2078 * @asc: Additional sense code 2079 * @ascq: Additional sense code qualifier 2080 * 2081 * Maps the given sense information into either descriptor or 2082 * fixed format sense data. 2083 * 2084 * Return: Nothing 2085 */ 2086 static inline void mpi3mr_build_sense_buffer(int desc, u8 *buf, u8 key, 2087 u8 asc, u8 ascq) 2088 { 2089 if (desc) { 2090 buf[0] = 0x72; /* descriptor, current */ 2091 buf[1] = key; 2092 buf[2] = asc; 2093 buf[3] = ascq; 2094 buf[7] = 0; 2095 } else { 2096 buf[0] = 0x70; /* fixed, current */ 2097 buf[2] = key; 2098 buf[7] = 0xa; 2099 buf[12] = asc; 2100 buf[13] = ascq; 2101 } 2102 } 2103 2104 /** 2105 * mpi3mr_map_eedp_error - Map EEDP errors from IOC status 2106 * @scmd: SCSI command reference 2107 * @ioc_status: status of MPI3 request 2108 * 2109 * Maps the EEDP error status of the SCSI IO request to sense 2110 * data. 2111 * 2112 * Return: Nothing 2113 */ 2114 static void mpi3mr_map_eedp_error(struct scsi_cmnd *scmd, 2115 u16 ioc_status) 2116 { 2117 u8 ascq = 0; 2118 2119 switch (ioc_status) { 2120 case MPI3_IOCSTATUS_EEDP_GUARD_ERROR: 2121 ascq = 0x01; 2122 break; 2123 case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR: 2124 ascq = 0x02; 2125 break; 2126 case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR: 2127 ascq = 0x03; 2128 break; 2129 default: 2130 ascq = 0x00; 2131 break; 2132 } 2133 2134 mpi3mr_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 2135 0x10, ascq); 2136 scmd->result = (DID_ABORT << 16) | SAM_STAT_CHECK_CONDITION; 2137 } 2138 2139 /** 2140 * mpi3mr_process_op_reply_desc - reply descriptor handler 2141 * @mrioc: Adapter instance reference 2142 * @reply_desc: Operational reply descriptor 2143 * @reply_dma: place holder for reply DMA address 2144 * @qidx: Operational queue index 2145 * 2146 * Process the operational reply descriptor and identifies the 2147 * descriptor type. Based on the descriptor map the MPI3 request 2148 * status to a SCSI command status and calls scsi_done call 2149 * back. 2150 * 2151 * Return: Nothing 2152 */ 2153 void mpi3mr_process_op_reply_desc(struct mpi3mr_ioc *mrioc, 2154 struct mpi3_default_reply_descriptor *reply_desc, u64 *reply_dma, u16 qidx) 2155 { 2156 u16 reply_desc_type, host_tag = 0; 2157 u16 ioc_status = MPI3_IOCSTATUS_SUCCESS; 2158 u32 ioc_loginfo = 0; 2159 struct mpi3_status_reply_descriptor *status_desc = NULL; 2160 struct mpi3_address_reply_descriptor *addr_desc = NULL; 2161 struct mpi3_success_reply_descriptor *success_desc = NULL; 2162 struct mpi3_scsi_io_reply *scsi_reply = NULL; 2163 struct scsi_cmnd *scmd = NULL; 2164 struct scmd_priv *priv = NULL; 2165 u8 *sense_buf = NULL; 2166 u8 scsi_state = 0, scsi_status = 0, sense_state = 0; 2167 u32 xfer_count = 0, sense_count = 0, resp_data = 0; 2168 u16 dev_handle = 0xFFFF; 2169 struct scsi_sense_hdr sshdr; 2170 2171 *reply_dma = 0; 2172 reply_desc_type = le16_to_cpu(reply_desc->reply_flags) & 2173 MPI3_REPLY_DESCRIPT_FLAGS_TYPE_MASK; 2174 switch (reply_desc_type) { 2175 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_STATUS: 2176 status_desc = (struct mpi3_status_reply_descriptor *)reply_desc; 2177 host_tag = le16_to_cpu(status_desc->host_tag); 2178 ioc_status = le16_to_cpu(status_desc->ioc_status); 2179 if (ioc_status & 2180 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL) 2181 ioc_loginfo = le32_to_cpu(status_desc->ioc_log_info); 2182 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK; 2183 break; 2184 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_ADDRESS_REPLY: 2185 addr_desc = (struct mpi3_address_reply_descriptor *)reply_desc; 2186 *reply_dma = le64_to_cpu(addr_desc->reply_frame_address); 2187 scsi_reply = mpi3mr_get_reply_virt_addr(mrioc, 2188 *reply_dma); 2189 if (!scsi_reply) { 2190 panic("%s: scsi_reply is NULL, this shouldn't happen\n", 2191 mrioc->name); 2192 goto out; 2193 } 2194 host_tag = le16_to_cpu(scsi_reply->host_tag); 2195 ioc_status = le16_to_cpu(scsi_reply->ioc_status); 2196 scsi_status = scsi_reply->scsi_status; 2197 scsi_state = scsi_reply->scsi_state; 2198 dev_handle = le16_to_cpu(scsi_reply->dev_handle); 2199 sense_state = (scsi_state & MPI3_SCSI_STATE_SENSE_MASK); 2200 xfer_count = le32_to_cpu(scsi_reply->transfer_count); 2201 sense_count = le32_to_cpu(scsi_reply->sense_count); 2202 resp_data = le32_to_cpu(scsi_reply->response_data); 2203 sense_buf = mpi3mr_get_sensebuf_virt_addr(mrioc, 2204 le64_to_cpu(scsi_reply->sense_data_buffer_address)); 2205 if (ioc_status & 2206 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL) 2207 ioc_loginfo = le32_to_cpu(scsi_reply->ioc_log_info); 2208 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK; 2209 if (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY) 2210 panic("%s: Ran out of sense buffers\n", mrioc->name); 2211 break; 2212 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_SUCCESS: 2213 success_desc = (struct mpi3_success_reply_descriptor *)reply_desc; 2214 host_tag = le16_to_cpu(success_desc->host_tag); 2215 break; 2216 default: 2217 break; 2218 } 2219 scmd = mpi3mr_scmd_from_host_tag(mrioc, host_tag, qidx); 2220 if (!scmd) { 2221 panic("%s: Cannot Identify scmd for host_tag 0x%x\n", 2222 mrioc->name, host_tag); 2223 goto out; 2224 } 2225 priv = scsi_cmd_priv(scmd); 2226 if (success_desc) { 2227 scmd->result = DID_OK << 16; 2228 goto out_success; 2229 } 2230 if (ioc_status == MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN && 2231 xfer_count == 0 && (scsi_status == MPI3_SCSI_STATUS_BUSY || 2232 scsi_status == MPI3_SCSI_STATUS_RESERVATION_CONFLICT || 2233 scsi_status == MPI3_SCSI_STATUS_TASK_SET_FULL)) 2234 ioc_status = MPI3_IOCSTATUS_SUCCESS; 2235 2236 if ((sense_state == MPI3_SCSI_STATE_SENSE_VALID) && sense_count && 2237 sense_buf) { 2238 u32 sz = min_t(u32, SCSI_SENSE_BUFFERSIZE, sense_count); 2239 2240 memcpy(scmd->sense_buffer, sense_buf, sz); 2241 } 2242 2243 switch (ioc_status) { 2244 case MPI3_IOCSTATUS_BUSY: 2245 case MPI3_IOCSTATUS_INSUFFICIENT_RESOURCES: 2246 scmd->result = SAM_STAT_BUSY; 2247 break; 2248 case MPI3_IOCSTATUS_SCSI_DEVICE_NOT_THERE: 2249 scmd->result = DID_NO_CONNECT << 16; 2250 break; 2251 case MPI3_IOCSTATUS_SCSI_IOC_TERMINATED: 2252 scmd->result = DID_SOFT_ERROR << 16; 2253 break; 2254 case MPI3_IOCSTATUS_SCSI_TASK_TERMINATED: 2255 case MPI3_IOCSTATUS_SCSI_EXT_TERMINATED: 2256 scmd->result = DID_RESET << 16; 2257 break; 2258 case MPI3_IOCSTATUS_SCSI_RESIDUAL_MISMATCH: 2259 if ((xfer_count == 0) || (scmd->underflow > xfer_count)) 2260 scmd->result = DID_SOFT_ERROR << 16; 2261 else 2262 scmd->result = (DID_OK << 16) | scsi_status; 2263 break; 2264 case MPI3_IOCSTATUS_SCSI_DATA_UNDERRUN: 2265 scmd->result = (DID_OK << 16) | scsi_status; 2266 if (sense_state == MPI3_SCSI_STATE_SENSE_VALID) 2267 break; 2268 if (xfer_count < scmd->underflow) { 2269 if (scsi_status == SAM_STAT_BUSY) 2270 scmd->result = SAM_STAT_BUSY; 2271 else 2272 scmd->result = DID_SOFT_ERROR << 16; 2273 } else if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) || 2274 (sense_state != MPI3_SCSI_STATE_SENSE_NOT_AVAILABLE)) 2275 scmd->result = DID_SOFT_ERROR << 16; 2276 else if (scsi_state & MPI3_SCSI_STATE_TERMINATED) 2277 scmd->result = DID_RESET << 16; 2278 break; 2279 case MPI3_IOCSTATUS_SCSI_DATA_OVERRUN: 2280 scsi_set_resid(scmd, 0); 2281 fallthrough; 2282 case MPI3_IOCSTATUS_SCSI_RECOVERED_ERROR: 2283 case MPI3_IOCSTATUS_SUCCESS: 2284 scmd->result = (DID_OK << 16) | scsi_status; 2285 if ((scsi_state & (MPI3_SCSI_STATE_NO_SCSI_STATUS)) || 2286 (sense_state == MPI3_SCSI_STATE_SENSE_FAILED) || 2287 (sense_state == MPI3_SCSI_STATE_SENSE_BUFF_Q_EMPTY)) 2288 scmd->result = DID_SOFT_ERROR << 16; 2289 else if (scsi_state & MPI3_SCSI_STATE_TERMINATED) 2290 scmd->result = DID_RESET << 16; 2291 break; 2292 case MPI3_IOCSTATUS_EEDP_GUARD_ERROR: 2293 case MPI3_IOCSTATUS_EEDP_REF_TAG_ERROR: 2294 case MPI3_IOCSTATUS_EEDP_APP_TAG_ERROR: 2295 mpi3mr_map_eedp_error(scmd, ioc_status); 2296 break; 2297 case MPI3_IOCSTATUS_SCSI_PROTOCOL_ERROR: 2298 case MPI3_IOCSTATUS_INVALID_FUNCTION: 2299 case MPI3_IOCSTATUS_INVALID_SGL: 2300 case MPI3_IOCSTATUS_INTERNAL_ERROR: 2301 case MPI3_IOCSTATUS_INVALID_FIELD: 2302 case MPI3_IOCSTATUS_INVALID_STATE: 2303 case MPI3_IOCSTATUS_SCSI_IO_DATA_ERROR: 2304 case MPI3_IOCSTATUS_SCSI_TASK_MGMT_FAILED: 2305 case MPI3_IOCSTATUS_INSUFFICIENT_POWER: 2306 default: 2307 scmd->result = DID_SOFT_ERROR << 16; 2308 break; 2309 } 2310 2311 if (scmd->result != (DID_OK << 16) && (scmd->cmnd[0] != ATA_12) && 2312 (scmd->cmnd[0] != ATA_16)) { 2313 ioc_info(mrioc, "%s :scmd->result 0x%x\n", __func__, 2314 scmd->result); 2315 scsi_print_command(scmd); 2316 ioc_info(mrioc, 2317 "%s :Command issued to handle 0x%02x returned with error 0x%04x loginfo 0x%08x, qid %d\n", 2318 __func__, dev_handle, ioc_status, ioc_loginfo, 2319 priv->req_q_idx + 1); 2320 ioc_info(mrioc, 2321 " host_tag %d scsi_state 0x%02x scsi_status 0x%02x, xfer_cnt %d resp_data 0x%x\n", 2322 host_tag, scsi_state, scsi_status, xfer_count, resp_data); 2323 if (sense_buf) { 2324 scsi_normalize_sense(sense_buf, sense_count, &sshdr); 2325 ioc_info(mrioc, 2326 "%s :sense_count 0x%x, sense_key 0x%x ASC 0x%x, ASCQ 0x%x\n", 2327 __func__, sense_count, sshdr.sense_key, 2328 sshdr.asc, sshdr.ascq); 2329 } 2330 } 2331 out_success: 2332 if (priv->meta_sg_valid) { 2333 dma_unmap_sg(&mrioc->pdev->dev, scsi_prot_sglist(scmd), 2334 scsi_prot_sg_count(scmd), scmd->sc_data_direction); 2335 } 2336 mpi3mr_clear_scmd_priv(mrioc, scmd); 2337 scsi_dma_unmap(scmd); 2338 scsi_done(scmd); 2339 out: 2340 if (sense_buf) 2341 mpi3mr_repost_sense_buf(mrioc, 2342 le64_to_cpu(scsi_reply->sense_data_buffer_address)); 2343 } 2344 2345 /** 2346 * mpi3mr_get_chain_idx - get free chain buffer index 2347 * @mrioc: Adapter instance reference 2348 * 2349 * Try to get a free chain buffer index from the free pool. 2350 * 2351 * Return: -1 on failure or the free chain buffer index 2352 */ 2353 static int mpi3mr_get_chain_idx(struct mpi3mr_ioc *mrioc) 2354 { 2355 u8 retry_count = 5; 2356 int cmd_idx = -1; 2357 2358 do { 2359 spin_lock(&mrioc->chain_buf_lock); 2360 cmd_idx = find_first_zero_bit(mrioc->chain_bitmap, 2361 mrioc->chain_buf_count); 2362 if (cmd_idx < mrioc->chain_buf_count) { 2363 set_bit(cmd_idx, mrioc->chain_bitmap); 2364 spin_unlock(&mrioc->chain_buf_lock); 2365 break; 2366 } 2367 spin_unlock(&mrioc->chain_buf_lock); 2368 cmd_idx = -1; 2369 } while (retry_count--); 2370 return cmd_idx; 2371 } 2372 2373 /** 2374 * mpi3mr_prepare_sg_scmd - build scatter gather list 2375 * @mrioc: Adapter instance reference 2376 * @scmd: SCSI command reference 2377 * @scsiio_req: MPI3 SCSI IO request 2378 * 2379 * This function maps SCSI command's data and protection SGEs to 2380 * MPI request SGEs. If required additional 4K chain buffer is 2381 * used to send the SGEs. 2382 * 2383 * Return: 0 on success, -ENOMEM on dma_map_sg failure 2384 */ 2385 static int mpi3mr_prepare_sg_scmd(struct mpi3mr_ioc *mrioc, 2386 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req) 2387 { 2388 dma_addr_t chain_dma; 2389 struct scatterlist *sg_scmd; 2390 void *sg_local, *chain; 2391 u32 chain_length; 2392 int sges_left, chain_idx; 2393 u32 sges_in_segment; 2394 u8 simple_sgl_flags; 2395 u8 simple_sgl_flags_last; 2396 u8 last_chain_sgl_flags; 2397 struct chain_element *chain_req; 2398 struct scmd_priv *priv = NULL; 2399 u32 meta_sg = le32_to_cpu(scsiio_req->flags) & 2400 MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI; 2401 2402 priv = scsi_cmd_priv(scmd); 2403 2404 simple_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_SIMPLE | 2405 MPI3_SGE_FLAGS_DLAS_SYSTEM; 2406 simple_sgl_flags_last = simple_sgl_flags | 2407 MPI3_SGE_FLAGS_END_OF_LIST; 2408 last_chain_sgl_flags = MPI3_SGE_FLAGS_ELEMENT_TYPE_LAST_CHAIN | 2409 MPI3_SGE_FLAGS_DLAS_SYSTEM; 2410 2411 if (meta_sg) 2412 sg_local = &scsiio_req->sgl[MPI3_SCSIIO_METASGL_INDEX]; 2413 else 2414 sg_local = &scsiio_req->sgl; 2415 2416 if (!scsiio_req->data_length && !meta_sg) { 2417 mpi3mr_build_zero_len_sge(sg_local); 2418 return 0; 2419 } 2420 2421 if (meta_sg) { 2422 sg_scmd = scsi_prot_sglist(scmd); 2423 sges_left = dma_map_sg(&mrioc->pdev->dev, 2424 scsi_prot_sglist(scmd), 2425 scsi_prot_sg_count(scmd), 2426 scmd->sc_data_direction); 2427 priv->meta_sg_valid = 1; /* To unmap meta sg DMA */ 2428 } else { 2429 sg_scmd = scsi_sglist(scmd); 2430 sges_left = scsi_dma_map(scmd); 2431 } 2432 2433 if (sges_left < 0) { 2434 sdev_printk(KERN_ERR, scmd->device, 2435 "scsi_dma_map failed: request for %d bytes!\n", 2436 scsi_bufflen(scmd)); 2437 return -ENOMEM; 2438 } 2439 if (sges_left > MPI3MR_SG_DEPTH) { 2440 sdev_printk(KERN_ERR, scmd->device, 2441 "scsi_dma_map returned unsupported sge count %d!\n", 2442 sges_left); 2443 return -ENOMEM; 2444 } 2445 2446 sges_in_segment = (mrioc->facts.op_req_sz - 2447 offsetof(struct mpi3_scsi_io_request, sgl)) / sizeof(struct mpi3_sge_common); 2448 2449 if (scsiio_req->sgl[0].eedp.flags == 2450 MPI3_SGE_FLAGS_ELEMENT_TYPE_EXTENDED && !meta_sg) { 2451 sg_local += sizeof(struct mpi3_sge_common); 2452 sges_in_segment--; 2453 /* Reserve 1st segment (scsiio_req->sgl[0]) for eedp */ 2454 } 2455 2456 if (scsiio_req->msg_flags == 2457 MPI3_SCSIIO_MSGFLAGS_METASGL_VALID && !meta_sg) { 2458 sges_in_segment--; 2459 /* Reserve last segment (scsiio_req->sgl[3]) for meta sg */ 2460 } 2461 2462 if (meta_sg) 2463 sges_in_segment = 1; 2464 2465 if (sges_left <= sges_in_segment) 2466 goto fill_in_last_segment; 2467 2468 /* fill in main message segment when there is a chain following */ 2469 while (sges_in_segment > 1) { 2470 mpi3mr_add_sg_single(sg_local, simple_sgl_flags, 2471 sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); 2472 sg_scmd = sg_next(sg_scmd); 2473 sg_local += sizeof(struct mpi3_sge_common); 2474 sges_left--; 2475 sges_in_segment--; 2476 } 2477 2478 chain_idx = mpi3mr_get_chain_idx(mrioc); 2479 if (chain_idx < 0) 2480 return -1; 2481 chain_req = &mrioc->chain_sgl_list[chain_idx]; 2482 if (meta_sg) 2483 priv->meta_chain_idx = chain_idx; 2484 else 2485 priv->chain_idx = chain_idx; 2486 2487 chain = chain_req->addr; 2488 chain_dma = chain_req->dma_addr; 2489 sges_in_segment = sges_left; 2490 chain_length = sges_in_segment * sizeof(struct mpi3_sge_common); 2491 2492 mpi3mr_add_sg_single(sg_local, last_chain_sgl_flags, 2493 chain_length, chain_dma); 2494 2495 sg_local = chain; 2496 2497 fill_in_last_segment: 2498 while (sges_left > 0) { 2499 if (sges_left == 1) 2500 mpi3mr_add_sg_single(sg_local, 2501 simple_sgl_flags_last, sg_dma_len(sg_scmd), 2502 sg_dma_address(sg_scmd)); 2503 else 2504 mpi3mr_add_sg_single(sg_local, simple_sgl_flags, 2505 sg_dma_len(sg_scmd), sg_dma_address(sg_scmd)); 2506 sg_scmd = sg_next(sg_scmd); 2507 sg_local += sizeof(struct mpi3_sge_common); 2508 sges_left--; 2509 } 2510 2511 return 0; 2512 } 2513 2514 /** 2515 * mpi3mr_build_sg_scmd - build scatter gather list for SCSI IO 2516 * @mrioc: Adapter instance reference 2517 * @scmd: SCSI command reference 2518 * @scsiio_req: MPI3 SCSI IO request 2519 * 2520 * This function calls mpi3mr_prepare_sg_scmd for constructing 2521 * both data SGEs and protection information SGEs in the MPI 2522 * format from the SCSI Command as appropriate . 2523 * 2524 * Return: return value of mpi3mr_prepare_sg_scmd. 2525 */ 2526 static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc, 2527 struct scsi_cmnd *scmd, struct mpi3_scsi_io_request *scsiio_req) 2528 { 2529 int ret; 2530 2531 ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req); 2532 if (ret) 2533 return ret; 2534 2535 if (scsiio_req->msg_flags == MPI3_SCSIIO_MSGFLAGS_METASGL_VALID) { 2536 /* There is a valid meta sg */ 2537 scsiio_req->flags |= 2538 cpu_to_le32(MPI3_SCSIIO_FLAGS_DMAOPERATION_HOST_PI); 2539 ret = mpi3mr_prepare_sg_scmd(mrioc, scmd, scsiio_req); 2540 } 2541 2542 return ret; 2543 } 2544 2545 /** 2546 * mpi3mr_print_response_code - print TM response as a string 2547 * @mrioc: Adapter instance reference 2548 * @resp_code: TM response code 2549 * 2550 * Print TM response code as a readable string. 2551 * 2552 * Return: Nothing. 2553 */ 2554 static void mpi3mr_print_response_code(struct mpi3mr_ioc *mrioc, u8 resp_code) 2555 { 2556 char *desc; 2557 2558 switch (resp_code) { 2559 case MPI3MR_RSP_TM_COMPLETE: 2560 desc = "task management request completed"; 2561 break; 2562 case MPI3MR_RSP_INVALID_FRAME: 2563 desc = "invalid frame"; 2564 break; 2565 case MPI3MR_RSP_TM_NOT_SUPPORTED: 2566 desc = "task management request not supported"; 2567 break; 2568 case MPI3MR_RSP_TM_FAILED: 2569 desc = "task management request failed"; 2570 break; 2571 case MPI3MR_RSP_TM_SUCCEEDED: 2572 desc = "task management request succeeded"; 2573 break; 2574 case MPI3MR_RSP_TM_INVALID_LUN: 2575 desc = "invalid lun"; 2576 break; 2577 case MPI3MR_RSP_TM_OVERLAPPED_TAG: 2578 desc = "overlapped tag attempted"; 2579 break; 2580 case MPI3MR_RSP_IO_QUEUED_ON_IOC: 2581 desc = "task queued, however not sent to target"; 2582 break; 2583 default: 2584 desc = "unknown"; 2585 break; 2586 } 2587 ioc_info(mrioc, "%s :response_code(0x%01x): %s\n", __func__, 2588 resp_code, desc); 2589 } 2590 2591 /** 2592 * mpi3mr_issue_tm - Issue Task Management request 2593 * @mrioc: Adapter instance reference 2594 * @tm_type: Task Management type 2595 * @handle: Device handle 2596 * @lun: lun ID 2597 * @htag: Host tag of the TM request 2598 * @drv_cmd: Internal command tracker 2599 * @resp_code: Response code place holder 2600 * @cmd_priv: SCSI command private data 2601 * 2602 * Issues a Task Management Request to the controller for a 2603 * specified target, lun and command and wait for its completion 2604 * and check TM response. Recover the TM if it timed out by 2605 * issuing controller reset. 2606 * 2607 * Return: 0 on success, non-zero on errors 2608 */ 2609 static int mpi3mr_issue_tm(struct mpi3mr_ioc *mrioc, u8 tm_type, 2610 u16 handle, uint lun, u16 htag, ulong timeout, 2611 struct mpi3mr_drv_cmd *drv_cmd, 2612 u8 *resp_code, struct scmd_priv *cmd_priv) 2613 { 2614 struct mpi3_scsi_task_mgmt_request tm_req; 2615 struct mpi3_scsi_task_mgmt_reply *tm_reply = NULL; 2616 int retval = 0; 2617 struct mpi3mr_tgt_dev *tgtdev = NULL; 2618 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data = NULL; 2619 struct op_req_qinfo *op_req_q = NULL; 2620 2621 ioc_info(mrioc, "%s :Issue TM: TM type (0x%x) for devhandle 0x%04x\n", 2622 __func__, tm_type, handle); 2623 if (mrioc->unrecoverable) { 2624 retval = -1; 2625 ioc_err(mrioc, "%s :Issue TM: Unrecoverable controller\n", 2626 __func__); 2627 goto out; 2628 } 2629 2630 memset(&tm_req, 0, sizeof(tm_req)); 2631 mutex_lock(&drv_cmd->mutex); 2632 if (drv_cmd->state & MPI3MR_CMD_PENDING) { 2633 retval = -1; 2634 ioc_err(mrioc, "%s :Issue TM: Command is in use\n", __func__); 2635 mutex_unlock(&drv_cmd->mutex); 2636 goto out; 2637 } 2638 if (mrioc->reset_in_progress) { 2639 retval = -1; 2640 ioc_err(mrioc, "%s :Issue TM: Reset in progress\n", __func__); 2641 mutex_unlock(&drv_cmd->mutex); 2642 goto out; 2643 } 2644 2645 drv_cmd->state = MPI3MR_CMD_PENDING; 2646 drv_cmd->is_waiting = 1; 2647 drv_cmd->callback = NULL; 2648 tm_req.dev_handle = cpu_to_le16(handle); 2649 tm_req.task_type = tm_type; 2650 tm_req.host_tag = cpu_to_le16(htag); 2651 2652 int_to_scsilun(lun, (struct scsi_lun *)tm_req.lun); 2653 tm_req.function = MPI3_FUNCTION_SCSI_TASK_MGMT; 2654 2655 tgtdev = mpi3mr_get_tgtdev_by_handle(mrioc, handle); 2656 if (tgtdev && tgtdev->starget && tgtdev->starget->hostdata) { 2657 scsi_tgt_priv_data = (struct mpi3mr_stgt_priv_data *) 2658 tgtdev->starget->hostdata; 2659 atomic_inc(&scsi_tgt_priv_data->block_io); 2660 } 2661 if (cmd_priv) { 2662 op_req_q = &mrioc->req_qinfo[cmd_priv->req_q_idx]; 2663 tm_req.task_host_tag = cpu_to_le16(cmd_priv->host_tag); 2664 tm_req.task_request_queue_id = cpu_to_le16(op_req_q->qid); 2665 } 2666 if (tgtdev && (tgtdev->dev_type == MPI3_DEVICE_DEVFORM_PCIE)) { 2667 if (cmd_priv && tgtdev->dev_spec.pcie_inf.abort_to) 2668 timeout = tgtdev->dev_spec.pcie_inf.abort_to; 2669 else if (!cmd_priv && tgtdev->dev_spec.pcie_inf.reset_to) 2670 timeout = tgtdev->dev_spec.pcie_inf.reset_to; 2671 } 2672 2673 init_completion(&drv_cmd->done); 2674 retval = mpi3mr_admin_request_post(mrioc, &tm_req, sizeof(tm_req), 1); 2675 if (retval) { 2676 ioc_err(mrioc, "%s :Issue TM: Admin Post failed\n", __func__); 2677 goto out_unlock; 2678 } 2679 wait_for_completion_timeout(&drv_cmd->done, (timeout * HZ)); 2680 2681 if (!(drv_cmd->state & MPI3MR_CMD_COMPLETE)) { 2682 ioc_err(mrioc, "%s :Issue TM: command timed out\n", __func__); 2683 drv_cmd->is_waiting = 0; 2684 retval = -1; 2685 if (!(drv_cmd->state & MPI3MR_CMD_RESET)) 2686 mpi3mr_soft_reset_handler(mrioc, 2687 MPI3MR_RESET_FROM_TM_TIMEOUT, 1); 2688 goto out_unlock; 2689 } 2690 2691 if (drv_cmd->state & MPI3MR_CMD_REPLY_VALID) 2692 tm_reply = (struct mpi3_scsi_task_mgmt_reply *)drv_cmd->reply; 2693 2694 if (drv_cmd->ioc_status != MPI3_IOCSTATUS_SUCCESS) { 2695 ioc_err(mrioc, 2696 "%s :Issue TM: handle(0x%04x) Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 2697 __func__, handle, drv_cmd->ioc_status, 2698 drv_cmd->ioc_loginfo); 2699 retval = -1; 2700 goto out_unlock; 2701 } 2702 2703 if (!tm_reply) { 2704 ioc_err(mrioc, "%s :Issue TM: No TM Reply message\n", __func__); 2705 retval = -1; 2706 goto out_unlock; 2707 } 2708 2709 *resp_code = le32_to_cpu(tm_reply->response_data) & 2710 MPI3MR_RI_MASK_RESPCODE; 2711 switch (*resp_code) { 2712 case MPI3MR_RSP_TM_SUCCEEDED: 2713 case MPI3MR_RSP_TM_COMPLETE: 2714 break; 2715 case MPI3MR_RSP_IO_QUEUED_ON_IOC: 2716 if (tm_type != MPI3_SCSITASKMGMT_TASKTYPE_QUERY_TASK) 2717 retval = -1; 2718 break; 2719 default: 2720 retval = -1; 2721 break; 2722 } 2723 2724 ioc_info(mrioc, 2725 "%s :Issue TM: Completed TM type (0x%x) handle(0x%04x) ", 2726 __func__, tm_type, handle); 2727 ioc_info(mrioc, 2728 "with ioc_status(0x%04x), loginfo(0x%08x), term_count(0x%08x)\n", 2729 drv_cmd->ioc_status, drv_cmd->ioc_loginfo, 2730 le32_to_cpu(tm_reply->termination_count)); 2731 mpi3mr_print_response_code(mrioc, *resp_code); 2732 2733 out_unlock: 2734 drv_cmd->state = MPI3MR_CMD_NOTUSED; 2735 mutex_unlock(&drv_cmd->mutex); 2736 if (scsi_tgt_priv_data) 2737 atomic_dec_if_positive(&scsi_tgt_priv_data->block_io); 2738 if (tgtdev) 2739 mpi3mr_tgtdev_put(tgtdev); 2740 if (!retval) { 2741 /* 2742 * Flush all IRQ handlers by calling synchronize_irq(). 2743 * mpi3mr_ioc_disable_intr() takes care of it. 2744 */ 2745 mpi3mr_ioc_disable_intr(mrioc); 2746 mpi3mr_ioc_enable_intr(mrioc); 2747 } 2748 out: 2749 return retval; 2750 } 2751 2752 /** 2753 * mpi3mr_bios_param - BIOS param callback 2754 * @sdev: SCSI device reference 2755 * @bdev: Block device reference 2756 * @capacity: Capacity in logical sectors 2757 * @params: Parameter array 2758 * 2759 * Just the parameters with heads/secots/cylinders. 2760 * 2761 * Return: 0 always 2762 */ 2763 static int mpi3mr_bios_param(struct scsi_device *sdev, 2764 struct block_device *bdev, sector_t capacity, int params[]) 2765 { 2766 int heads; 2767 int sectors; 2768 sector_t cylinders; 2769 ulong dummy; 2770 2771 heads = 64; 2772 sectors = 32; 2773 2774 dummy = heads * sectors; 2775 cylinders = capacity; 2776 sector_div(cylinders, dummy); 2777 2778 if ((ulong)capacity >= 0x200000) { 2779 heads = 255; 2780 sectors = 63; 2781 dummy = heads * sectors; 2782 cylinders = capacity; 2783 sector_div(cylinders, dummy); 2784 } 2785 2786 params[0] = heads; 2787 params[1] = sectors; 2788 params[2] = cylinders; 2789 return 0; 2790 } 2791 2792 /** 2793 * mpi3mr_map_queues - Map queues callback handler 2794 * @shost: SCSI host reference 2795 * 2796 * Call the blk_mq_pci_map_queues with from which operational 2797 * queue the mapping has to be done 2798 * 2799 * Return: return of blk_mq_pci_map_queues 2800 */ 2801 static int mpi3mr_map_queues(struct Scsi_Host *shost) 2802 { 2803 struct mpi3mr_ioc *mrioc = shost_priv(shost); 2804 2805 return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT], 2806 mrioc->pdev, mrioc->op_reply_q_offset); 2807 } 2808 2809 /** 2810 * mpi3mr_get_fw_pending_ios - Calculate pending I/O count 2811 * @mrioc: Adapter instance reference 2812 * 2813 * Calculate the pending I/Os for the controller and return. 2814 * 2815 * Return: Number of pending I/Os 2816 */ 2817 static inline int mpi3mr_get_fw_pending_ios(struct mpi3mr_ioc *mrioc) 2818 { 2819 u16 i; 2820 uint pend_ios = 0; 2821 2822 for (i = 0; i < mrioc->num_op_reply_q; i++) 2823 pend_ios += atomic_read(&mrioc->op_reply_qinfo[i].pend_ios); 2824 return pend_ios; 2825 } 2826 2827 /** 2828 * mpi3mr_print_pending_host_io - print pending I/Os 2829 * @mrioc: Adapter instance reference 2830 * 2831 * Print number of pending I/Os and each I/O details prior to 2832 * reset for debug purpose. 2833 * 2834 * Return: Nothing 2835 */ 2836 static void mpi3mr_print_pending_host_io(struct mpi3mr_ioc *mrioc) 2837 { 2838 struct Scsi_Host *shost = mrioc->shost; 2839 2840 ioc_info(mrioc, "%s :Pending commands prior to reset: %d\n", 2841 __func__, mpi3mr_get_fw_pending_ios(mrioc)); 2842 blk_mq_tagset_busy_iter(&shost->tag_set, 2843 mpi3mr_print_scmd, (void *)mrioc); 2844 } 2845 2846 /** 2847 * mpi3mr_wait_for_host_io - block for I/Os to complete 2848 * @mrioc: Adapter instance reference 2849 * @timeout: time out in seconds 2850 * Waits for pending I/Os for the given adapter to complete or 2851 * to hit the timeout. 2852 * 2853 * Return: Nothing 2854 */ 2855 void mpi3mr_wait_for_host_io(struct mpi3mr_ioc *mrioc, u32 timeout) 2856 { 2857 enum mpi3mr_iocstate iocstate; 2858 int i = 0; 2859 2860 iocstate = mpi3mr_get_iocstate(mrioc); 2861 if (iocstate != MRIOC_STATE_READY) 2862 return; 2863 2864 if (!mpi3mr_get_fw_pending_ios(mrioc)) 2865 return; 2866 ioc_info(mrioc, 2867 "%s :Waiting for %d seconds prior to reset for %d I/O\n", 2868 __func__, timeout, mpi3mr_get_fw_pending_ios(mrioc)); 2869 2870 for (i = 0; i < timeout; i++) { 2871 if (!mpi3mr_get_fw_pending_ios(mrioc)) 2872 break; 2873 iocstate = mpi3mr_get_iocstate(mrioc); 2874 if (iocstate != MRIOC_STATE_READY) 2875 break; 2876 msleep(1000); 2877 } 2878 2879 ioc_info(mrioc, "%s :Pending I/Os after wait is: %d\n", __func__, 2880 mpi3mr_get_fw_pending_ios(mrioc)); 2881 } 2882 2883 /** 2884 * mpi3mr_eh_host_reset - Host reset error handling callback 2885 * @scmd: SCSI command reference 2886 * 2887 * Issue controller reset if the scmd is for a Physical Device, 2888 * if the scmd is for RAID volume, then wait for 2889 * MPI3MR_RAID_ERRREC_RESET_TIMEOUT and checke whether any 2890 * pending I/Os prior to issuing reset to the controller. 2891 * 2892 * Return: SUCCESS of successful reset else FAILED 2893 */ 2894 static int mpi3mr_eh_host_reset(struct scsi_cmnd *scmd) 2895 { 2896 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); 2897 struct mpi3mr_stgt_priv_data *stgt_priv_data; 2898 struct mpi3mr_sdev_priv_data *sdev_priv_data; 2899 u8 dev_type = MPI3_DEVICE_DEVFORM_VD; 2900 int retval = FAILED, ret; 2901 2902 sdev_priv_data = scmd->device->hostdata; 2903 if (sdev_priv_data && sdev_priv_data->tgt_priv_data) { 2904 stgt_priv_data = sdev_priv_data->tgt_priv_data; 2905 dev_type = stgt_priv_data->dev_type; 2906 } 2907 2908 if (dev_type == MPI3_DEVICE_DEVFORM_VD) { 2909 mpi3mr_wait_for_host_io(mrioc, 2910 MPI3MR_RAID_ERRREC_RESET_TIMEOUT); 2911 if (!mpi3mr_get_fw_pending_ios(mrioc)) { 2912 retval = SUCCESS; 2913 goto out; 2914 } 2915 } 2916 2917 mpi3mr_print_pending_host_io(mrioc); 2918 ret = mpi3mr_soft_reset_handler(mrioc, 2919 MPI3MR_RESET_FROM_EH_HOS, 1); 2920 if (ret) 2921 goto out; 2922 2923 retval = SUCCESS; 2924 out: 2925 sdev_printk(KERN_INFO, scmd->device, 2926 "Host reset is %s for scmd(%p)\n", 2927 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 2928 2929 return retval; 2930 } 2931 2932 /** 2933 * mpi3mr_eh_target_reset - Target reset error handling callback 2934 * @scmd: SCSI command reference 2935 * 2936 * Issue Target reset Task Management and verify the scmd is 2937 * terminated successfully and return status accordingly. 2938 * 2939 * Return: SUCCESS of successful termination of the scmd else 2940 * FAILED 2941 */ 2942 static int mpi3mr_eh_target_reset(struct scsi_cmnd *scmd) 2943 { 2944 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); 2945 struct mpi3mr_stgt_priv_data *stgt_priv_data; 2946 struct mpi3mr_sdev_priv_data *sdev_priv_data; 2947 u16 dev_handle; 2948 u8 resp_code = 0; 2949 int retval = FAILED, ret = 0; 2950 2951 sdev_printk(KERN_INFO, scmd->device, 2952 "Attempting Target Reset! scmd(%p)\n", scmd); 2953 scsi_print_command(scmd); 2954 2955 sdev_priv_data = scmd->device->hostdata; 2956 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) { 2957 sdev_printk(KERN_INFO, scmd->device, 2958 "SCSI device is not available\n"); 2959 retval = SUCCESS; 2960 goto out; 2961 } 2962 2963 stgt_priv_data = sdev_priv_data->tgt_priv_data; 2964 dev_handle = stgt_priv_data->dev_handle; 2965 sdev_printk(KERN_INFO, scmd->device, 2966 "Target Reset is issued to handle(0x%04x)\n", 2967 dev_handle); 2968 2969 ret = mpi3mr_issue_tm(mrioc, 2970 MPI3_SCSITASKMGMT_TASKTYPE_TARGET_RESET, dev_handle, 2971 sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS, 2972 MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, NULL); 2973 2974 if (ret) 2975 goto out; 2976 2977 retval = SUCCESS; 2978 out: 2979 sdev_printk(KERN_INFO, scmd->device, 2980 "Target reset is %s for scmd(%p)\n", 2981 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 2982 2983 return retval; 2984 } 2985 2986 /** 2987 * mpi3mr_eh_dev_reset- Device reset error handling callback 2988 * @scmd: SCSI command reference 2989 * 2990 * Issue lun reset Task Management and verify the scmd is 2991 * terminated successfully and return status accordingly. 2992 * 2993 * Return: SUCCESS of successful termination of the scmd else 2994 * FAILED 2995 */ 2996 static int mpi3mr_eh_dev_reset(struct scsi_cmnd *scmd) 2997 { 2998 struct mpi3mr_ioc *mrioc = shost_priv(scmd->device->host); 2999 struct mpi3mr_stgt_priv_data *stgt_priv_data; 3000 struct mpi3mr_sdev_priv_data *sdev_priv_data; 3001 u16 dev_handle; 3002 u8 resp_code = 0; 3003 int retval = FAILED, ret = 0; 3004 3005 sdev_printk(KERN_INFO, scmd->device, 3006 "Attempting Device(lun) Reset! scmd(%p)\n", scmd); 3007 scsi_print_command(scmd); 3008 3009 sdev_priv_data = scmd->device->hostdata; 3010 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) { 3011 sdev_printk(KERN_INFO, scmd->device, 3012 "SCSI device is not available\n"); 3013 retval = SUCCESS; 3014 goto out; 3015 } 3016 3017 stgt_priv_data = sdev_priv_data->tgt_priv_data; 3018 dev_handle = stgt_priv_data->dev_handle; 3019 sdev_printk(KERN_INFO, scmd->device, 3020 "Device(lun) Reset is issued to handle(0x%04x)\n", dev_handle); 3021 3022 ret = mpi3mr_issue_tm(mrioc, 3023 MPI3_SCSITASKMGMT_TASKTYPE_LOGICAL_UNIT_RESET, dev_handle, 3024 sdev_priv_data->lun_id, MPI3MR_HOSTTAG_BLK_TMS, 3025 MPI3MR_RESETTM_TIMEOUT, &mrioc->host_tm_cmds, &resp_code, NULL); 3026 3027 if (ret) 3028 goto out; 3029 3030 retval = SUCCESS; 3031 out: 3032 sdev_printk(KERN_INFO, scmd->device, 3033 "Device(lun) reset is %s for scmd(%p)\n", 3034 ((retval == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 3035 3036 return retval; 3037 } 3038 3039 /** 3040 * mpi3mr_scan_start - Scan start callback handler 3041 * @shost: SCSI host reference 3042 * 3043 * Issue port enable request asynchronously. 3044 * 3045 * Return: Nothing 3046 */ 3047 static void mpi3mr_scan_start(struct Scsi_Host *shost) 3048 { 3049 struct mpi3mr_ioc *mrioc = shost_priv(shost); 3050 3051 mrioc->scan_started = 1; 3052 ioc_info(mrioc, "%s :Issuing Port Enable\n", __func__); 3053 if (mpi3mr_issue_port_enable(mrioc, 1)) { 3054 ioc_err(mrioc, "%s :Issuing port enable failed\n", __func__); 3055 mrioc->scan_started = 0; 3056 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR; 3057 } 3058 } 3059 3060 /** 3061 * mpi3mr_scan_finished - Scan finished callback handler 3062 * @shost: SCSI host reference 3063 * @time: Jiffies from the scan start 3064 * 3065 * Checks whether the port enable is completed or timedout or 3066 * failed and set the scan status accordingly after taking any 3067 * recovery if required. 3068 * 3069 * Return: 1 on scan finished or timed out, 0 for in progress 3070 */ 3071 static int mpi3mr_scan_finished(struct Scsi_Host *shost, 3072 unsigned long time) 3073 { 3074 struct mpi3mr_ioc *mrioc = shost_priv(shost); 3075 u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT; 3076 3077 if (time >= (pe_timeout * HZ)) { 3078 mrioc->init_cmds.is_waiting = 0; 3079 mrioc->init_cmds.callback = NULL; 3080 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 3081 ioc_err(mrioc, "%s :port enable request timed out\n", __func__); 3082 mrioc->is_driver_loading = 0; 3083 mpi3mr_soft_reset_handler(mrioc, 3084 MPI3MR_RESET_FROM_PE_TIMEOUT, 1); 3085 } 3086 3087 if (mrioc->scan_failed) { 3088 ioc_err(mrioc, 3089 "%s :port enable failed with (ioc_status=0x%08x)\n", 3090 __func__, mrioc->scan_failed); 3091 mrioc->is_driver_loading = 0; 3092 mrioc->stop_drv_processing = 1; 3093 return 1; 3094 } 3095 3096 if (mrioc->scan_started) 3097 return 0; 3098 ioc_info(mrioc, "%s :port enable: SUCCESS\n", __func__); 3099 mpi3mr_start_watchdog(mrioc); 3100 mrioc->is_driver_loading = 0; 3101 3102 return 1; 3103 } 3104 3105 /** 3106 * mpi3mr_slave_destroy - Slave destroy callback handler 3107 * @sdev: SCSI device reference 3108 * 3109 * Cleanup and free per device(lun) private data. 3110 * 3111 * Return: Nothing. 3112 */ 3113 static void mpi3mr_slave_destroy(struct scsi_device *sdev) 3114 { 3115 struct Scsi_Host *shost; 3116 struct mpi3mr_ioc *mrioc; 3117 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; 3118 struct mpi3mr_tgt_dev *tgt_dev; 3119 unsigned long flags; 3120 struct scsi_target *starget; 3121 3122 if (!sdev->hostdata) 3123 return; 3124 3125 starget = scsi_target(sdev); 3126 shost = dev_to_shost(&starget->dev); 3127 mrioc = shost_priv(shost); 3128 scsi_tgt_priv_data = starget->hostdata; 3129 3130 scsi_tgt_priv_data->num_luns--; 3131 3132 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 3133 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); 3134 if (tgt_dev && (!scsi_tgt_priv_data->num_luns)) 3135 tgt_dev->starget = NULL; 3136 if (tgt_dev) 3137 mpi3mr_tgtdev_put(tgt_dev); 3138 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 3139 3140 kfree(sdev->hostdata); 3141 sdev->hostdata = NULL; 3142 } 3143 3144 /** 3145 * mpi3mr_target_destroy - Target destroy callback handler 3146 * @starget: SCSI target reference 3147 * 3148 * Cleanup and free per target private data. 3149 * 3150 * Return: Nothing. 3151 */ 3152 static void mpi3mr_target_destroy(struct scsi_target *starget) 3153 { 3154 struct Scsi_Host *shost; 3155 struct mpi3mr_ioc *mrioc; 3156 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; 3157 struct mpi3mr_tgt_dev *tgt_dev; 3158 unsigned long flags; 3159 3160 if (!starget->hostdata) 3161 return; 3162 3163 shost = dev_to_shost(&starget->dev); 3164 mrioc = shost_priv(shost); 3165 scsi_tgt_priv_data = starget->hostdata; 3166 3167 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 3168 tgt_dev = __mpi3mr_get_tgtdev_from_tgtpriv(mrioc, scsi_tgt_priv_data); 3169 if (tgt_dev && (tgt_dev->starget == starget) && 3170 (tgt_dev->perst_id == starget->id)) 3171 tgt_dev->starget = NULL; 3172 if (tgt_dev) { 3173 scsi_tgt_priv_data->tgt_dev = NULL; 3174 scsi_tgt_priv_data->perst_id = 0; 3175 mpi3mr_tgtdev_put(tgt_dev); 3176 mpi3mr_tgtdev_put(tgt_dev); 3177 } 3178 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 3179 3180 kfree(starget->hostdata); 3181 starget->hostdata = NULL; 3182 } 3183 3184 /** 3185 * mpi3mr_slave_configure - Slave configure callback handler 3186 * @sdev: SCSI device reference 3187 * 3188 * Configure queue depth, max hardware sectors and virt boundary 3189 * as required 3190 * 3191 * Return: 0 always. 3192 */ 3193 static int mpi3mr_slave_configure(struct scsi_device *sdev) 3194 { 3195 struct scsi_target *starget; 3196 struct Scsi_Host *shost; 3197 struct mpi3mr_ioc *mrioc; 3198 struct mpi3mr_tgt_dev *tgt_dev; 3199 unsigned long flags; 3200 int retval = 0; 3201 3202 starget = scsi_target(sdev); 3203 shost = dev_to_shost(&starget->dev); 3204 mrioc = shost_priv(shost); 3205 3206 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 3207 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); 3208 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 3209 if (!tgt_dev) 3210 return -ENXIO; 3211 3212 mpi3mr_change_queue_depth(sdev, tgt_dev->q_depth); 3213 switch (tgt_dev->dev_type) { 3214 case MPI3_DEVICE_DEVFORM_PCIE: 3215 /*The block layer hw sector size = 512*/ 3216 if ((tgt_dev->dev_spec.pcie_inf.dev_info & 3217 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_MASK) == 3218 MPI3_DEVICE0_PCIE_DEVICE_INFO_TYPE_NVME_DEVICE) { 3219 blk_queue_max_hw_sectors(sdev->request_queue, 3220 tgt_dev->dev_spec.pcie_inf.mdts / 512); 3221 if (tgt_dev->dev_spec.pcie_inf.pgsz == 0) 3222 blk_queue_virt_boundary(sdev->request_queue, 3223 ((1 << MPI3MR_DEFAULT_PGSZEXP) - 1)); 3224 else 3225 blk_queue_virt_boundary(sdev->request_queue, 3226 ((1 << tgt_dev->dev_spec.pcie_inf.pgsz) - 1)); 3227 } 3228 break; 3229 default: 3230 break; 3231 } 3232 3233 mpi3mr_tgtdev_put(tgt_dev); 3234 3235 return retval; 3236 } 3237 3238 /** 3239 * mpi3mr_slave_alloc -Slave alloc callback handler 3240 * @sdev: SCSI device reference 3241 * 3242 * Allocate per device(lun) private data and initialize it. 3243 * 3244 * Return: 0 on success -ENOMEM on memory allocation failure. 3245 */ 3246 static int mpi3mr_slave_alloc(struct scsi_device *sdev) 3247 { 3248 struct Scsi_Host *shost; 3249 struct mpi3mr_ioc *mrioc; 3250 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; 3251 struct mpi3mr_tgt_dev *tgt_dev; 3252 struct mpi3mr_sdev_priv_data *scsi_dev_priv_data; 3253 unsigned long flags; 3254 struct scsi_target *starget; 3255 int retval = 0; 3256 3257 starget = scsi_target(sdev); 3258 shost = dev_to_shost(&starget->dev); 3259 mrioc = shost_priv(shost); 3260 scsi_tgt_priv_data = starget->hostdata; 3261 3262 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 3263 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); 3264 3265 if (tgt_dev) { 3266 if (tgt_dev->starget == NULL) 3267 tgt_dev->starget = starget; 3268 mpi3mr_tgtdev_put(tgt_dev); 3269 retval = 0; 3270 } else { 3271 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 3272 return -ENXIO; 3273 } 3274 3275 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 3276 3277 scsi_dev_priv_data = kzalloc(sizeof(*scsi_dev_priv_data), GFP_KERNEL); 3278 if (!scsi_dev_priv_data) 3279 return -ENOMEM; 3280 3281 scsi_dev_priv_data->lun_id = sdev->lun; 3282 scsi_dev_priv_data->tgt_priv_data = scsi_tgt_priv_data; 3283 sdev->hostdata = scsi_dev_priv_data; 3284 3285 scsi_tgt_priv_data->num_luns++; 3286 3287 return retval; 3288 } 3289 3290 /** 3291 * mpi3mr_target_alloc - Target alloc callback handler 3292 * @starget: SCSI target reference 3293 * 3294 * Allocate per target private data and initialize it. 3295 * 3296 * Return: 0 on success -ENOMEM on memory allocation failure. 3297 */ 3298 static int mpi3mr_target_alloc(struct scsi_target *starget) 3299 { 3300 struct Scsi_Host *shost = dev_to_shost(&starget->dev); 3301 struct mpi3mr_ioc *mrioc = shost_priv(shost); 3302 struct mpi3mr_stgt_priv_data *scsi_tgt_priv_data; 3303 struct mpi3mr_tgt_dev *tgt_dev; 3304 unsigned long flags; 3305 int retval = 0; 3306 3307 scsi_tgt_priv_data = kzalloc(sizeof(*scsi_tgt_priv_data), GFP_KERNEL); 3308 if (!scsi_tgt_priv_data) 3309 return -ENOMEM; 3310 3311 starget->hostdata = scsi_tgt_priv_data; 3312 3313 spin_lock_irqsave(&mrioc->tgtdev_lock, flags); 3314 tgt_dev = __mpi3mr_get_tgtdev_by_perst_id(mrioc, starget->id); 3315 if (tgt_dev && !tgt_dev->is_hidden) { 3316 scsi_tgt_priv_data->starget = starget; 3317 scsi_tgt_priv_data->dev_handle = tgt_dev->dev_handle; 3318 scsi_tgt_priv_data->perst_id = tgt_dev->perst_id; 3319 scsi_tgt_priv_data->dev_type = tgt_dev->dev_type; 3320 scsi_tgt_priv_data->tgt_dev = tgt_dev; 3321 tgt_dev->starget = starget; 3322 atomic_set(&scsi_tgt_priv_data->block_io, 0); 3323 retval = 0; 3324 } else 3325 retval = -ENXIO; 3326 spin_unlock_irqrestore(&mrioc->tgtdev_lock, flags); 3327 3328 return retval; 3329 } 3330 3331 /** 3332 * mpi3mr_check_return_unmap - Whether an unmap is allowed 3333 * @mrioc: Adapter instance reference 3334 * @scmd: SCSI Command reference 3335 * 3336 * The controller hardware cannot handle certain unmap commands 3337 * for NVMe drives, this routine checks those and return true 3338 * and completes the SCSI command with proper status and sense 3339 * data. 3340 * 3341 * Return: TRUE for not allowed unmap, FALSE otherwise. 3342 */ 3343 static bool mpi3mr_check_return_unmap(struct mpi3mr_ioc *mrioc, 3344 struct scsi_cmnd *scmd) 3345 { 3346 unsigned char *buf; 3347 u16 param_len, desc_len, trunc_param_len; 3348 3349 trunc_param_len = param_len = get_unaligned_be16(scmd->cmnd + 7); 3350 3351 if (mrioc->pdev->revision) { 3352 if ((param_len > 24) && ((param_len - 8) & 0xF)) { 3353 trunc_param_len -= (param_len - 8) & 0xF; 3354 dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR); 3355 dprint_scsi_err(mrioc, 3356 "truncating param_len from (%d) to (%d)\n", 3357 param_len, trunc_param_len); 3358 put_unaligned_be16(trunc_param_len, scmd->cmnd + 7); 3359 dprint_scsi_command(mrioc, scmd, MPI3_DEBUG_SCSI_ERROR); 3360 } 3361 return false; 3362 } 3363 3364 if (!param_len) { 3365 ioc_warn(mrioc, 3366 "%s: cdb received with zero parameter length\n", 3367 __func__); 3368 scsi_print_command(scmd); 3369 scmd->result = DID_OK << 16; 3370 scsi_done(scmd); 3371 return true; 3372 } 3373 3374 if (param_len < 24) { 3375 ioc_warn(mrioc, 3376 "%s: cdb received with invalid param_len: %d\n", 3377 __func__, param_len); 3378 scsi_print_command(scmd); 3379 scmd->result = SAM_STAT_CHECK_CONDITION; 3380 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 3381 0x1A, 0); 3382 scsi_done(scmd); 3383 return true; 3384 } 3385 if (param_len != scsi_bufflen(scmd)) { 3386 ioc_warn(mrioc, 3387 "%s: cdb received with param_len: %d bufflen: %d\n", 3388 __func__, param_len, scsi_bufflen(scmd)); 3389 scsi_print_command(scmd); 3390 scmd->result = SAM_STAT_CHECK_CONDITION; 3391 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 3392 0x1A, 0); 3393 scsi_done(scmd); 3394 return true; 3395 } 3396 buf = kzalloc(scsi_bufflen(scmd), GFP_ATOMIC); 3397 if (!buf) { 3398 scsi_print_command(scmd); 3399 scmd->result = SAM_STAT_CHECK_CONDITION; 3400 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 3401 0x55, 0x03); 3402 scsi_done(scmd); 3403 return true; 3404 } 3405 scsi_sg_copy_to_buffer(scmd, buf, scsi_bufflen(scmd)); 3406 desc_len = get_unaligned_be16(&buf[2]); 3407 3408 if (desc_len < 16) { 3409 ioc_warn(mrioc, 3410 "%s: Invalid descriptor length in param list: %d\n", 3411 __func__, desc_len); 3412 scsi_print_command(scmd); 3413 scmd->result = SAM_STAT_CHECK_CONDITION; 3414 scsi_build_sense_buffer(0, scmd->sense_buffer, ILLEGAL_REQUEST, 3415 0x26, 0); 3416 scsi_done(scmd); 3417 kfree(buf); 3418 return true; 3419 } 3420 3421 if (param_len > (desc_len + 8)) { 3422 trunc_param_len = desc_len + 8; 3423 scsi_print_command(scmd); 3424 dprint_scsi_err(mrioc, 3425 "truncating param_len(%d) to desc_len+8(%d)\n", 3426 param_len, trunc_param_len); 3427 put_unaligned_be16(trunc_param_len, scmd->cmnd + 7); 3428 scsi_print_command(scmd); 3429 } 3430 3431 kfree(buf); 3432 return false; 3433 } 3434 3435 /** 3436 * mpi3mr_allow_scmd_to_fw - Command is allowed during shutdown 3437 * @scmd: SCSI Command reference 3438 * 3439 * Checks whether a cdb is allowed during shutdown or not. 3440 * 3441 * Return: TRUE for allowed commands, FALSE otherwise. 3442 */ 3443 3444 inline bool mpi3mr_allow_scmd_to_fw(struct scsi_cmnd *scmd) 3445 { 3446 switch (scmd->cmnd[0]) { 3447 case SYNCHRONIZE_CACHE: 3448 case START_STOP: 3449 return true; 3450 default: 3451 return false; 3452 } 3453 } 3454 3455 /** 3456 * mpi3mr_qcmd - I/O request despatcher 3457 * @shost: SCSI Host reference 3458 * @scmd: SCSI Command reference 3459 * 3460 * Issues the SCSI Command as an MPI3 request. 3461 * 3462 * Return: 0 on successful queueing of the request or if the 3463 * request is completed with failure. 3464 * SCSI_MLQUEUE_DEVICE_BUSY when the device is busy. 3465 * SCSI_MLQUEUE_HOST_BUSY when the host queue is full. 3466 */ 3467 static int mpi3mr_qcmd(struct Scsi_Host *shost, 3468 struct scsi_cmnd *scmd) 3469 { 3470 struct mpi3mr_ioc *mrioc = shost_priv(shost); 3471 struct mpi3mr_stgt_priv_data *stgt_priv_data; 3472 struct mpi3mr_sdev_priv_data *sdev_priv_data; 3473 struct scmd_priv *scmd_priv_data = NULL; 3474 struct mpi3_scsi_io_request *scsiio_req = NULL; 3475 struct op_req_qinfo *op_req_q = NULL; 3476 int retval = 0; 3477 u16 dev_handle; 3478 u16 host_tag; 3479 u32 scsiio_flags = 0; 3480 struct request *rq = scsi_cmd_to_rq(scmd); 3481 int iprio_class; 3482 u8 is_pcie_dev = 0; 3483 3484 sdev_priv_data = scmd->device->hostdata; 3485 if (!sdev_priv_data || !sdev_priv_data->tgt_priv_data) { 3486 scmd->result = DID_NO_CONNECT << 16; 3487 scsi_done(scmd); 3488 goto out; 3489 } 3490 3491 if (mrioc->stop_drv_processing && 3492 !(mpi3mr_allow_scmd_to_fw(scmd))) { 3493 scmd->result = DID_NO_CONNECT << 16; 3494 scsi_done(scmd); 3495 goto out; 3496 } 3497 3498 if (mrioc->reset_in_progress) { 3499 retval = SCSI_MLQUEUE_HOST_BUSY; 3500 goto out; 3501 } 3502 3503 stgt_priv_data = sdev_priv_data->tgt_priv_data; 3504 3505 dev_handle = stgt_priv_data->dev_handle; 3506 if (dev_handle == MPI3MR_INVALID_DEV_HANDLE) { 3507 scmd->result = DID_NO_CONNECT << 16; 3508 scsi_done(scmd); 3509 goto out; 3510 } 3511 if (stgt_priv_data->dev_removed) { 3512 scmd->result = DID_NO_CONNECT << 16; 3513 scsi_done(scmd); 3514 goto out; 3515 } 3516 3517 if (atomic_read(&stgt_priv_data->block_io)) { 3518 if (mrioc->stop_drv_processing) { 3519 scmd->result = DID_NO_CONNECT << 16; 3520 scsi_done(scmd); 3521 goto out; 3522 } 3523 retval = SCSI_MLQUEUE_DEVICE_BUSY; 3524 goto out; 3525 } 3526 3527 if (stgt_priv_data->dev_type == MPI3_DEVICE_DEVFORM_PCIE) 3528 is_pcie_dev = 1; 3529 if ((scmd->cmnd[0] == UNMAP) && is_pcie_dev && 3530 (mrioc->pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) && 3531 mpi3mr_check_return_unmap(mrioc, scmd)) 3532 goto out; 3533 3534 host_tag = mpi3mr_host_tag_for_scmd(mrioc, scmd); 3535 if (host_tag == MPI3MR_HOSTTAG_INVALID) { 3536 scmd->result = DID_ERROR << 16; 3537 scsi_done(scmd); 3538 goto out; 3539 } 3540 3541 if (scmd->sc_data_direction == DMA_FROM_DEVICE) 3542 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_READ; 3543 else if (scmd->sc_data_direction == DMA_TO_DEVICE) 3544 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_WRITE; 3545 else 3546 scsiio_flags = MPI3_SCSIIO_FLAGS_DATADIRECTION_NO_DATA_TRANSFER; 3547 3548 scsiio_flags |= MPI3_SCSIIO_FLAGS_TASKATTRIBUTE_SIMPLEQ; 3549 3550 if (sdev_priv_data->ncq_prio_enable) { 3551 iprio_class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); 3552 if (iprio_class == IOPRIO_CLASS_RT) 3553 scsiio_flags |= 1 << MPI3_SCSIIO_FLAGS_CMDPRI_SHIFT; 3554 } 3555 3556 if (scmd->cmd_len > 16) 3557 scsiio_flags |= MPI3_SCSIIO_FLAGS_CDB_GREATER_THAN_16; 3558 3559 scmd_priv_data = scsi_cmd_priv(scmd); 3560 memset(scmd_priv_data->mpi3mr_scsiio_req, 0, MPI3MR_ADMIN_REQ_FRAME_SZ); 3561 scsiio_req = (struct mpi3_scsi_io_request *)scmd_priv_data->mpi3mr_scsiio_req; 3562 scsiio_req->function = MPI3_FUNCTION_SCSI_IO; 3563 scsiio_req->host_tag = cpu_to_le16(host_tag); 3564 3565 mpi3mr_setup_eedp(mrioc, scmd, scsiio_req); 3566 3567 memcpy(scsiio_req->cdb.cdb32, scmd->cmnd, scmd->cmd_len); 3568 scsiio_req->data_length = cpu_to_le32(scsi_bufflen(scmd)); 3569 scsiio_req->dev_handle = cpu_to_le16(dev_handle); 3570 scsiio_req->flags = cpu_to_le32(scsiio_flags); 3571 int_to_scsilun(sdev_priv_data->lun_id, 3572 (struct scsi_lun *)scsiio_req->lun); 3573 3574 if (mpi3mr_build_sg_scmd(mrioc, scmd, scsiio_req)) { 3575 mpi3mr_clear_scmd_priv(mrioc, scmd); 3576 retval = SCSI_MLQUEUE_HOST_BUSY; 3577 goto out; 3578 } 3579 op_req_q = &mrioc->req_qinfo[scmd_priv_data->req_q_idx]; 3580 3581 if (mpi3mr_op_request_post(mrioc, op_req_q, 3582 scmd_priv_data->mpi3mr_scsiio_req)) { 3583 mpi3mr_clear_scmd_priv(mrioc, scmd); 3584 retval = SCSI_MLQUEUE_HOST_BUSY; 3585 goto out; 3586 } 3587 3588 out: 3589 return retval; 3590 } 3591 3592 static struct scsi_host_template mpi3mr_driver_template = { 3593 .module = THIS_MODULE, 3594 .name = "MPI3 Storage Controller", 3595 .proc_name = MPI3MR_DRIVER_NAME, 3596 .queuecommand = mpi3mr_qcmd, 3597 .target_alloc = mpi3mr_target_alloc, 3598 .slave_alloc = mpi3mr_slave_alloc, 3599 .slave_configure = mpi3mr_slave_configure, 3600 .target_destroy = mpi3mr_target_destroy, 3601 .slave_destroy = mpi3mr_slave_destroy, 3602 .scan_finished = mpi3mr_scan_finished, 3603 .scan_start = mpi3mr_scan_start, 3604 .change_queue_depth = mpi3mr_change_queue_depth, 3605 .eh_device_reset_handler = mpi3mr_eh_dev_reset, 3606 .eh_target_reset_handler = mpi3mr_eh_target_reset, 3607 .eh_host_reset_handler = mpi3mr_eh_host_reset, 3608 .bios_param = mpi3mr_bios_param, 3609 .map_queues = mpi3mr_map_queues, 3610 .no_write_same = 1, 3611 .can_queue = 1, 3612 .this_id = -1, 3613 .sg_tablesize = MPI3MR_SG_DEPTH, 3614 /* max xfer supported is 1M (2K in 512 byte sized sectors) 3615 */ 3616 .max_sectors = 2048, 3617 .cmd_per_lun = MPI3MR_MAX_CMDS_LUN, 3618 .max_segment_size = 0xffffffff, 3619 .track_queue_depth = 1, 3620 .cmd_size = sizeof(struct scmd_priv), 3621 }; 3622 3623 /** 3624 * mpi3mr_init_drv_cmd - Initialize internal command tracker 3625 * @cmdptr: Internal command tracker 3626 * @host_tag: Host tag used for the specific command 3627 * 3628 * Initialize the internal command tracker structure with 3629 * specified host tag. 3630 * 3631 * Return: Nothing. 3632 */ 3633 static inline void mpi3mr_init_drv_cmd(struct mpi3mr_drv_cmd *cmdptr, 3634 u16 host_tag) 3635 { 3636 mutex_init(&cmdptr->mutex); 3637 cmdptr->reply = NULL; 3638 cmdptr->state = MPI3MR_CMD_NOTUSED; 3639 cmdptr->dev_handle = MPI3MR_INVALID_DEV_HANDLE; 3640 cmdptr->host_tag = host_tag; 3641 } 3642 3643 /** 3644 * osintfc_mrioc_security_status -Check controller secure status 3645 * @pdev: PCI device instance 3646 * 3647 * Read the Device Serial Number capability from PCI config 3648 * space and decide whether the controller is secure or not. 3649 * 3650 * Return: 0 on success, non-zero on failure. 3651 */ 3652 static int 3653 osintfc_mrioc_security_status(struct pci_dev *pdev) 3654 { 3655 u32 cap_data; 3656 int base; 3657 u32 ctlr_status; 3658 u32 debug_status; 3659 int retval = 0; 3660 3661 base = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DSN); 3662 if (!base) { 3663 dev_err(&pdev->dev, 3664 "%s: PCI_EXT_CAP_ID_DSN is not supported\n", __func__); 3665 return -1; 3666 } 3667 3668 pci_read_config_dword(pdev, base + 4, &cap_data); 3669 3670 debug_status = cap_data & MPI3MR_CTLR_SECURE_DBG_STATUS_MASK; 3671 ctlr_status = cap_data & MPI3MR_CTLR_SECURITY_STATUS_MASK; 3672 3673 switch (ctlr_status) { 3674 case MPI3MR_INVALID_DEVICE: 3675 dev_err(&pdev->dev, 3676 "%s: Non secure ctlr (Invalid) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", 3677 __func__, pdev->device, pdev->subsystem_vendor, 3678 pdev->subsystem_device); 3679 retval = -1; 3680 break; 3681 case MPI3MR_CONFIG_SECURE_DEVICE: 3682 if (!debug_status) 3683 dev_info(&pdev->dev, 3684 "%s: Config secure ctlr is detected\n", 3685 __func__); 3686 break; 3687 case MPI3MR_HARD_SECURE_DEVICE: 3688 break; 3689 case MPI3MR_TAMPERED_DEVICE: 3690 dev_err(&pdev->dev, 3691 "%s: Non secure ctlr (Tampered) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", 3692 __func__, pdev->device, pdev->subsystem_vendor, 3693 pdev->subsystem_device); 3694 retval = -1; 3695 break; 3696 default: 3697 retval = -1; 3698 break; 3699 } 3700 3701 if (!retval && debug_status) { 3702 dev_err(&pdev->dev, 3703 "%s: Non secure ctlr (Secure Dbg) is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", 3704 __func__, pdev->device, pdev->subsystem_vendor, 3705 pdev->subsystem_device); 3706 retval = -1; 3707 } 3708 3709 return retval; 3710 } 3711 3712 /** 3713 * mpi3mr_probe - PCI probe callback 3714 * @pdev: PCI device instance 3715 * @id: PCI device ID details 3716 * 3717 * controller initialization routine. Checks the security status 3718 * of the controller and if it is invalid or tampered return the 3719 * probe without initializing the controller. Otherwise, 3720 * allocate per adapter instance through shost_priv and 3721 * initialize controller specific data structures, initializae 3722 * the controller hardware, add shost to the SCSI subsystem. 3723 * 3724 * Return: 0 on success, non-zero on failure. 3725 */ 3726 3727 static int 3728 mpi3mr_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3729 { 3730 struct mpi3mr_ioc *mrioc = NULL; 3731 struct Scsi_Host *shost = NULL; 3732 int retval = 0, i; 3733 3734 if (osintfc_mrioc_security_status(pdev)) { 3735 warn_non_secure_ctlr = 1; 3736 return 1; /* For Invalid and Tampered device */ 3737 } 3738 3739 shost = scsi_host_alloc(&mpi3mr_driver_template, 3740 sizeof(struct mpi3mr_ioc)); 3741 if (!shost) { 3742 retval = -ENODEV; 3743 goto shost_failed; 3744 } 3745 3746 mrioc = shost_priv(shost); 3747 mrioc->id = mrioc_ids++; 3748 sprintf(mrioc->driver_name, "%s", MPI3MR_DRIVER_NAME); 3749 sprintf(mrioc->name, "%s%d", mrioc->driver_name, mrioc->id); 3750 INIT_LIST_HEAD(&mrioc->list); 3751 spin_lock(&mrioc_list_lock); 3752 list_add_tail(&mrioc->list, &mrioc_list); 3753 spin_unlock(&mrioc_list_lock); 3754 3755 spin_lock_init(&mrioc->admin_req_lock); 3756 spin_lock_init(&mrioc->reply_free_queue_lock); 3757 spin_lock_init(&mrioc->sbq_lock); 3758 spin_lock_init(&mrioc->fwevt_lock); 3759 spin_lock_init(&mrioc->tgtdev_lock); 3760 spin_lock_init(&mrioc->watchdog_lock); 3761 spin_lock_init(&mrioc->chain_buf_lock); 3762 3763 INIT_LIST_HEAD(&mrioc->fwevt_list); 3764 INIT_LIST_HEAD(&mrioc->tgtdev_list); 3765 INIT_LIST_HEAD(&mrioc->delayed_rmhs_list); 3766 3767 mutex_init(&mrioc->reset_mutex); 3768 mpi3mr_init_drv_cmd(&mrioc->init_cmds, MPI3MR_HOSTTAG_INITCMDS); 3769 mpi3mr_init_drv_cmd(&mrioc->host_tm_cmds, MPI3MR_HOSTTAG_BLK_TMS); 3770 3771 for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++) 3772 mpi3mr_init_drv_cmd(&mrioc->dev_rmhs_cmds[i], 3773 MPI3MR_HOSTTAG_DEVRMCMD_MIN + i); 3774 3775 if (pdev->revision) 3776 mrioc->enable_segqueue = true; 3777 3778 init_waitqueue_head(&mrioc->reset_waitq); 3779 mrioc->logging_level = logging_level; 3780 mrioc->shost = shost; 3781 mrioc->pdev = pdev; 3782 3783 /* init shost parameters */ 3784 shost->max_cmd_len = MPI3MR_MAX_CDB_LENGTH; 3785 shost->max_lun = -1; 3786 shost->unique_id = mrioc->id; 3787 3788 shost->max_channel = 0; 3789 shost->max_id = 0xFFFFFFFF; 3790 3791 if (prot_mask >= 0) 3792 scsi_host_set_prot(shost, prot_mask); 3793 else { 3794 prot_mask = SHOST_DIF_TYPE1_PROTECTION 3795 | SHOST_DIF_TYPE2_PROTECTION 3796 | SHOST_DIF_TYPE3_PROTECTION; 3797 scsi_host_set_prot(shost, prot_mask); 3798 } 3799 3800 ioc_info(mrioc, 3801 "%s :host protection capabilities enabled %s%s%s%s%s%s%s\n", 3802 __func__, 3803 (prot_mask & SHOST_DIF_TYPE1_PROTECTION) ? " DIF1" : "", 3804 (prot_mask & SHOST_DIF_TYPE2_PROTECTION) ? " DIF2" : "", 3805 (prot_mask & SHOST_DIF_TYPE3_PROTECTION) ? " DIF3" : "", 3806 (prot_mask & SHOST_DIX_TYPE0_PROTECTION) ? " DIX0" : "", 3807 (prot_mask & SHOST_DIX_TYPE1_PROTECTION) ? " DIX1" : "", 3808 (prot_mask & SHOST_DIX_TYPE2_PROTECTION) ? " DIX2" : "", 3809 (prot_mask & SHOST_DIX_TYPE3_PROTECTION) ? " DIX3" : ""); 3810 3811 if (prot_guard_mask) 3812 scsi_host_set_guard(shost, (prot_guard_mask & 3)); 3813 else 3814 scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); 3815 3816 snprintf(mrioc->fwevt_worker_name, sizeof(mrioc->fwevt_worker_name), 3817 "%s%d_fwevt_wrkr", mrioc->driver_name, mrioc->id); 3818 mrioc->fwevt_worker_thread = alloc_ordered_workqueue( 3819 mrioc->fwevt_worker_name, WQ_MEM_RECLAIM); 3820 if (!mrioc->fwevt_worker_thread) { 3821 ioc_err(mrioc, "failure at %s:%d/%s()!\n", 3822 __FILE__, __LINE__, __func__); 3823 retval = -ENODEV; 3824 goto fwevtthread_failed; 3825 } 3826 3827 mrioc->is_driver_loading = 1; 3828 mrioc->cpu_count = num_online_cpus(); 3829 if (mpi3mr_setup_resources(mrioc)) { 3830 ioc_err(mrioc, "setup resources failed\n"); 3831 retval = -ENODEV; 3832 goto resource_alloc_failed; 3833 } 3834 if (mpi3mr_init_ioc(mrioc)) { 3835 ioc_err(mrioc, "initializing IOC failed\n"); 3836 retval = -ENODEV; 3837 goto init_ioc_failed; 3838 } 3839 3840 shost->nr_hw_queues = mrioc->num_op_reply_q; 3841 shost->can_queue = mrioc->max_host_ios; 3842 shost->sg_tablesize = MPI3MR_SG_DEPTH; 3843 shost->max_id = mrioc->facts.max_perids + 1; 3844 3845 retval = scsi_add_host(shost, &pdev->dev); 3846 if (retval) { 3847 ioc_err(mrioc, "failure at %s:%d/%s()!\n", 3848 __FILE__, __LINE__, __func__); 3849 goto addhost_failed; 3850 } 3851 3852 scsi_scan_host(shost); 3853 return retval; 3854 3855 addhost_failed: 3856 mpi3mr_stop_watchdog(mrioc); 3857 mpi3mr_cleanup_ioc(mrioc); 3858 init_ioc_failed: 3859 mpi3mr_free_mem(mrioc); 3860 mpi3mr_cleanup_resources(mrioc); 3861 resource_alloc_failed: 3862 destroy_workqueue(mrioc->fwevt_worker_thread); 3863 fwevtthread_failed: 3864 spin_lock(&mrioc_list_lock); 3865 list_del(&mrioc->list); 3866 spin_unlock(&mrioc_list_lock); 3867 scsi_host_put(shost); 3868 shost_failed: 3869 return retval; 3870 } 3871 3872 /** 3873 * mpi3mr_remove - PCI remove callback 3874 * @pdev: PCI device instance 3875 * 3876 * Cleanup the IOC by issuing MUR and shutdown notification. 3877 * Free up all memory and resources associated with the 3878 * controllerand target devices, unregister the shost. 3879 * 3880 * Return: Nothing. 3881 */ 3882 static void mpi3mr_remove(struct pci_dev *pdev) 3883 { 3884 struct Scsi_Host *shost = pci_get_drvdata(pdev); 3885 struct mpi3mr_ioc *mrioc; 3886 struct workqueue_struct *wq; 3887 unsigned long flags; 3888 struct mpi3mr_tgt_dev *tgtdev, *tgtdev_next; 3889 3890 if (!shost) 3891 return; 3892 3893 mrioc = shost_priv(shost); 3894 while (mrioc->reset_in_progress || mrioc->is_driver_loading) 3895 ssleep(1); 3896 3897 mrioc->stop_drv_processing = 1; 3898 mpi3mr_cleanup_fwevt_list(mrioc); 3899 spin_lock_irqsave(&mrioc->fwevt_lock, flags); 3900 wq = mrioc->fwevt_worker_thread; 3901 mrioc->fwevt_worker_thread = NULL; 3902 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); 3903 if (wq) 3904 destroy_workqueue(wq); 3905 scsi_remove_host(shost); 3906 3907 list_for_each_entry_safe(tgtdev, tgtdev_next, &mrioc->tgtdev_list, 3908 list) { 3909 mpi3mr_remove_tgtdev_from_host(mrioc, tgtdev); 3910 mpi3mr_tgtdev_del_from_list(mrioc, tgtdev); 3911 mpi3mr_tgtdev_put(tgtdev); 3912 } 3913 mpi3mr_stop_watchdog(mrioc); 3914 mpi3mr_cleanup_ioc(mrioc); 3915 mpi3mr_free_mem(mrioc); 3916 mpi3mr_cleanup_resources(mrioc); 3917 3918 spin_lock(&mrioc_list_lock); 3919 list_del(&mrioc->list); 3920 spin_unlock(&mrioc_list_lock); 3921 3922 scsi_host_put(shost); 3923 } 3924 3925 /** 3926 * mpi3mr_shutdown - PCI shutdown callback 3927 * @pdev: PCI device instance 3928 * 3929 * Free up all memory and resources associated with the 3930 * controller 3931 * 3932 * Return: Nothing. 3933 */ 3934 static void mpi3mr_shutdown(struct pci_dev *pdev) 3935 { 3936 struct Scsi_Host *shost = pci_get_drvdata(pdev); 3937 struct mpi3mr_ioc *mrioc; 3938 struct workqueue_struct *wq; 3939 unsigned long flags; 3940 3941 if (!shost) 3942 return; 3943 3944 mrioc = shost_priv(shost); 3945 while (mrioc->reset_in_progress || mrioc->is_driver_loading) 3946 ssleep(1); 3947 3948 mrioc->stop_drv_processing = 1; 3949 mpi3mr_cleanup_fwevt_list(mrioc); 3950 spin_lock_irqsave(&mrioc->fwevt_lock, flags); 3951 wq = mrioc->fwevt_worker_thread; 3952 mrioc->fwevt_worker_thread = NULL; 3953 spin_unlock_irqrestore(&mrioc->fwevt_lock, flags); 3954 if (wq) 3955 destroy_workqueue(wq); 3956 3957 mpi3mr_stop_watchdog(mrioc); 3958 mpi3mr_cleanup_ioc(mrioc); 3959 mpi3mr_cleanup_resources(mrioc); 3960 } 3961 3962 #ifdef CONFIG_PM 3963 /** 3964 * mpi3mr_suspend - PCI power management suspend callback 3965 * @pdev: PCI device instance 3966 * @state: New power state 3967 * 3968 * Change the power state to the given value and cleanup the IOC 3969 * by issuing MUR and shutdown notification 3970 * 3971 * Return: 0 always. 3972 */ 3973 static int mpi3mr_suspend(struct pci_dev *pdev, pm_message_t state) 3974 { 3975 struct Scsi_Host *shost = pci_get_drvdata(pdev); 3976 struct mpi3mr_ioc *mrioc; 3977 pci_power_t device_state; 3978 3979 if (!shost) 3980 return 0; 3981 3982 mrioc = shost_priv(shost); 3983 while (mrioc->reset_in_progress || mrioc->is_driver_loading) 3984 ssleep(1); 3985 mrioc->stop_drv_processing = 1; 3986 mpi3mr_cleanup_fwevt_list(mrioc); 3987 scsi_block_requests(shost); 3988 mpi3mr_stop_watchdog(mrioc); 3989 mpi3mr_cleanup_ioc(mrioc); 3990 3991 device_state = pci_choose_state(pdev, state); 3992 ioc_info(mrioc, "pdev=0x%p, slot=%s, entering operating state [D%d]\n", 3993 pdev, pci_name(pdev), device_state); 3994 pci_save_state(pdev); 3995 pci_set_power_state(pdev, device_state); 3996 mpi3mr_cleanup_resources(mrioc); 3997 3998 return 0; 3999 } 4000 4001 /** 4002 * mpi3mr_resume - PCI power management resume callback 4003 * @pdev: PCI device instance 4004 * 4005 * Restore the power state to D0 and reinitialize the controller 4006 * and resume I/O operations to the target devices 4007 * 4008 * Return: 0 on success, non-zero on failure 4009 */ 4010 static int mpi3mr_resume(struct pci_dev *pdev) 4011 { 4012 struct Scsi_Host *shost = pci_get_drvdata(pdev); 4013 struct mpi3mr_ioc *mrioc; 4014 pci_power_t device_state = pdev->current_state; 4015 int r; 4016 4017 if (!shost) 4018 return 0; 4019 4020 mrioc = shost_priv(shost); 4021 4022 ioc_info(mrioc, "pdev=0x%p, slot=%s, previous operating state [D%d]\n", 4023 pdev, pci_name(pdev), device_state); 4024 pci_set_power_state(pdev, PCI_D0); 4025 pci_enable_wake(pdev, PCI_D0, 0); 4026 pci_restore_state(pdev); 4027 mrioc->pdev = pdev; 4028 mrioc->cpu_count = num_online_cpus(); 4029 r = mpi3mr_setup_resources(mrioc); 4030 if (r) { 4031 ioc_info(mrioc, "%s: Setup resources failed[%d]\n", 4032 __func__, r); 4033 return r; 4034 } 4035 4036 mrioc->stop_drv_processing = 0; 4037 mpi3mr_memset_buffers(mrioc); 4038 r = mpi3mr_reinit_ioc(mrioc, 1); 4039 if (r) { 4040 ioc_err(mrioc, "resuming controller failed[%d]\n", r); 4041 return r; 4042 } 4043 scsi_unblock_requests(shost); 4044 mpi3mr_start_watchdog(mrioc); 4045 4046 return 0; 4047 } 4048 #endif 4049 4050 static const struct pci_device_id mpi3mr_pci_id_table[] = { 4051 { 4052 PCI_DEVICE_SUB(PCI_VENDOR_ID_LSI_LOGIC, 0x00A5, 4053 PCI_ANY_ID, PCI_ANY_ID) 4054 }, 4055 { 0 } 4056 }; 4057 MODULE_DEVICE_TABLE(pci, mpi3mr_pci_id_table); 4058 4059 static struct pci_driver mpi3mr_pci_driver = { 4060 .name = MPI3MR_DRIVER_NAME, 4061 .id_table = mpi3mr_pci_id_table, 4062 .probe = mpi3mr_probe, 4063 .remove = mpi3mr_remove, 4064 .shutdown = mpi3mr_shutdown, 4065 #ifdef CONFIG_PM 4066 .suspend = mpi3mr_suspend, 4067 .resume = mpi3mr_resume, 4068 #endif 4069 }; 4070 4071 static int __init mpi3mr_init(void) 4072 { 4073 int ret_val; 4074 4075 pr_info("Loading %s version %s\n", MPI3MR_DRIVER_NAME, 4076 MPI3MR_DRIVER_VERSION); 4077 4078 ret_val = pci_register_driver(&mpi3mr_pci_driver); 4079 4080 return ret_val; 4081 } 4082 4083 static void __exit mpi3mr_exit(void) 4084 { 4085 if (warn_non_secure_ctlr) 4086 pr_warn( 4087 "Unloading %s version %s while managing a non secure controller\n", 4088 MPI3MR_DRIVER_NAME, MPI3MR_DRIVER_VERSION); 4089 else 4090 pr_info("Unloading %s version %s\n", MPI3MR_DRIVER_NAME, 4091 MPI3MR_DRIVER_VERSION); 4092 4093 pci_unregister_driver(&mpi3mr_pci_driver); 4094 } 4095 4096 module_init(mpi3mr_init); 4097 module_exit(mpi3mr_exit); 4098