1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Linux MegaRAID driver for SAS based RAID controllers 4 * 5 * Copyright (c) 2009-2013 LSI Corporation 6 * Copyright (c) 2013-2016 Avago Technologies 7 * Copyright (c) 2016-2018 Broadcom Inc. 8 * 9 * FILE: megaraid_sas_fusion.c 10 * 11 * Authors: Broadcom Inc. 12 * Sumant Patro 13 * Adam Radford 14 * Kashyap Desai <kashyap.desai@broadcom.com> 15 * Sumit Saxena <sumit.saxena@broadcom.com> 16 * 17 * Send feedback to: megaraidlinux.pdl@broadcom.com 18 */ 19 20 #include <linux/kernel.h> 21 #include <linux/types.h> 22 #include <linux/pci.h> 23 #include <linux/list.h> 24 #include <linux/moduleparam.h> 25 #include <linux/module.h> 26 #include <linux/spinlock.h> 27 #include <linux/interrupt.h> 28 #include <linux/delay.h> 29 #include <linux/uio.h> 30 #include <linux/uaccess.h> 31 #include <linux/fs.h> 32 #include <linux/compat.h> 33 #include <linux/blkdev.h> 34 #include <linux/mutex.h> 35 #include <linux/poll.h> 36 #include <linux/vmalloc.h> 37 #include <linux/workqueue.h> 38 #include <linux/irq_poll.h> 39 40 #include <scsi/scsi.h> 41 #include <scsi/scsi_cmnd.h> 42 #include <scsi/scsi_device.h> 43 #include <scsi/scsi_host.h> 44 #include <scsi/scsi_dbg.h> 45 #include <linux/dmi.h> 46 47 #include "megaraid_sas_fusion.h" 48 #include "megaraid_sas.h" 49 50 51 extern void 52 megasas_complete_cmd(struct megasas_instance *instance, 53 struct megasas_cmd *cmd, u8 alt_status); 54 int 55 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 56 int seconds); 57 58 int 59 megasas_clear_intr_fusion(struct megasas_instance *instance); 60 61 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 62 63 extern u32 megasas_dbg_lvl; 64 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 65 int initial); 66 extern struct megasas_mgmt_info megasas_mgmt_info; 67 extern unsigned int resetwaittime; 68 extern unsigned int dual_qdepth_disable; 69 static void megasas_free_rdpq_fusion(struct megasas_instance *instance); 70 static void megasas_free_reply_fusion(struct megasas_instance *instance); 71 static inline 72 void megasas_configure_queue_sizes(struct megasas_instance *instance); 73 static void megasas_fusion_crash_dump(struct megasas_instance *instance); 74 75 /** 76 * megasas_adp_reset_wait_for_ready - initiate chip reset and wait for 77 * controller to come to ready state 78 * @instance: adapter's soft state 79 * @do_adp_reset: If true, do a chip reset 80 * @ocr_context: If called from OCR context this will 81 * be set to 1, else 0 82 * 83 * This function initates a chip reset followed by a wait for controller to 84 * transition to ready state. 85 * During this, driver will block all access to PCI config space from userspace 86 */ 87 int 88 megasas_adp_reset_wait_for_ready(struct megasas_instance *instance, 89 bool do_adp_reset, 90 int ocr_context) 91 { 92 int ret = FAILED; 93 94 /* 95 * Block access to PCI config space from userspace 96 * when diag reset is initiated from driver 97 */ 98 if (megasas_dbg_lvl & OCR_DEBUG) 99 dev_info(&instance->pdev->dev, 100 "Block access to PCI config space %s %d\n", 101 __func__, __LINE__); 102 103 pci_cfg_access_lock(instance->pdev); 104 105 if (do_adp_reset) { 106 if (instance->instancet->adp_reset 107 (instance, instance->reg_set)) 108 goto out; 109 } 110 111 /* Wait for FW to become ready */ 112 if (megasas_transition_to_ready(instance, ocr_context)) { 113 dev_warn(&instance->pdev->dev, 114 "Failed to transition controller to ready for scsi%d.\n", 115 instance->host->host_no); 116 goto out; 117 } 118 119 ret = SUCCESS; 120 out: 121 if (megasas_dbg_lvl & OCR_DEBUG) 122 dev_info(&instance->pdev->dev, 123 "Unlock access to PCI config space %s %d\n", 124 __func__, __LINE__); 125 126 pci_cfg_access_unlock(instance->pdev); 127 128 return ret; 129 } 130 131 /** 132 * megasas_check_same_4gb_region - check if allocation 133 * crosses same 4GB boundary or not 134 * @instance: adapter's soft instance 135 * @start_addr: start address of DMA allocation 136 * @size: size of allocation in bytes 137 * @return: true : allocation does not cross same 138 * 4GB boundary 139 * false: allocation crosses same 140 * 4GB boundary 141 */ 142 static inline bool megasas_check_same_4gb_region 143 (struct megasas_instance *instance, dma_addr_t start_addr, size_t size) 144 { 145 dma_addr_t end_addr; 146 147 end_addr = start_addr + size; 148 149 if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) { 150 dev_err(&instance->pdev->dev, 151 "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n", 152 (unsigned long long)start_addr, 153 (unsigned long long)end_addr); 154 return false; 155 } 156 157 return true; 158 } 159 160 /** 161 * megasas_enable_intr_fusion - Enables interrupts 162 * @instance: adapter's soft instance 163 */ 164 static void 165 megasas_enable_intr_fusion(struct megasas_instance *instance) 166 { 167 struct megasas_register_set __iomem *regs; 168 regs = instance->reg_set; 169 170 instance->mask_interrupts = 0; 171 /* For Thunderbolt/Invader also clear intr on enable */ 172 writel(~0, ®s->outbound_intr_status); 173 readl(®s->outbound_intr_status); 174 175 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 176 177 /* Dummy readl to force pci flush */ 178 dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n", 179 __func__, readl(®s->outbound_intr_mask)); 180 } 181 182 /** 183 * megasas_disable_intr_fusion - Disables interrupt 184 * @instance: adapter's soft instance 185 */ 186 static void 187 megasas_disable_intr_fusion(struct megasas_instance *instance) 188 { 189 u32 mask = 0xFFFFFFFF; 190 struct megasas_register_set __iomem *regs; 191 regs = instance->reg_set; 192 instance->mask_interrupts = 1; 193 194 writel(mask, ®s->outbound_intr_mask); 195 /* Dummy readl to force pci flush */ 196 dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n", 197 __func__, readl(®s->outbound_intr_mask)); 198 } 199 200 int 201 megasas_clear_intr_fusion(struct megasas_instance *instance) 202 { 203 u32 status; 204 struct megasas_register_set __iomem *regs; 205 regs = instance->reg_set; 206 /* 207 * Check if it is our interrupt 208 */ 209 status = megasas_readl(instance, 210 ®s->outbound_intr_status); 211 212 if (status & 1) { 213 writel(status, ®s->outbound_intr_status); 214 readl(®s->outbound_intr_status); 215 return 1; 216 } 217 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) 218 return 0; 219 220 return 1; 221 } 222 223 static inline void 224 megasas_sdev_busy_inc(struct megasas_instance *instance, 225 struct scsi_cmnd *scmd) 226 { 227 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 228 struct MR_PRIV_DEVICE *mr_device_priv_data = 229 scmd->device->hostdata; 230 atomic_inc(&mr_device_priv_data->sdev_priv_busy); 231 } 232 } 233 234 static inline void 235 megasas_sdev_busy_dec(struct megasas_instance *instance, 236 struct scsi_cmnd *scmd) 237 { 238 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 239 struct MR_PRIV_DEVICE *mr_device_priv_data = 240 scmd->device->hostdata; 241 atomic_dec(&mr_device_priv_data->sdev_priv_busy); 242 } 243 } 244 245 static inline int 246 megasas_sdev_busy_read(struct megasas_instance *instance, 247 struct scsi_cmnd *scmd) 248 { 249 if (instance->perf_mode == MR_BALANCED_PERF_MODE) { 250 struct MR_PRIV_DEVICE *mr_device_priv_data = 251 scmd->device->hostdata; 252 return atomic_read(&mr_device_priv_data->sdev_priv_busy); 253 } 254 return 0; 255 } 256 257 /** 258 * megasas_get_cmd_fusion - Get a command from the free pool 259 * @instance: Adapter soft state 260 * @blk_tag: Command tag 261 * 262 * Returns a blk_tag indexed mpt frame 263 */ 264 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance 265 *instance, u32 blk_tag) 266 { 267 struct fusion_context *fusion; 268 269 fusion = instance->ctrl_context; 270 return fusion->cmd_list[blk_tag]; 271 } 272 273 /** 274 * megasas_return_cmd_fusion - Return a cmd to free command pool 275 * @instance: Adapter soft state 276 * @cmd: Command packet to be returned to free command pool 277 */ 278 inline void megasas_return_cmd_fusion(struct megasas_instance *instance, 279 struct megasas_cmd_fusion *cmd) 280 { 281 cmd->scmd = NULL; 282 memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE); 283 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 284 cmd->cmd_completed = false; 285 } 286 287 /** 288 * megasas_write_64bit_req_desc - PCI writes 64bit request descriptor 289 * @instance: Adapter soft state 290 * @req_desc: 64bit Request descriptor 291 */ 292 static void 293 megasas_write_64bit_req_desc(struct megasas_instance *instance, 294 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc) 295 { 296 #if defined(writeq) && defined(CONFIG_64BIT) 297 u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) | 298 le32_to_cpu(req_desc->u.low)); 299 writeq(req_data, &instance->reg_set->inbound_low_queue_port); 300 #else 301 unsigned long flags; 302 spin_lock_irqsave(&instance->hba_lock, flags); 303 writel(le32_to_cpu(req_desc->u.low), 304 &instance->reg_set->inbound_low_queue_port); 305 writel(le32_to_cpu(req_desc->u.high), 306 &instance->reg_set->inbound_high_queue_port); 307 spin_unlock_irqrestore(&instance->hba_lock, flags); 308 #endif 309 } 310 311 /** 312 * megasas_fire_cmd_fusion - Sends command to the FW 313 * @instance: Adapter soft state 314 * @req_desc: 32bit or 64bit Request descriptor 315 * 316 * Perform PCI Write. AERO SERIES supports 32 bit Descriptor. 317 * Prior to AERO_SERIES support 64 bit Descriptor. 318 */ 319 static void 320 megasas_fire_cmd_fusion(struct megasas_instance *instance, 321 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc) 322 { 323 if (instance->atomic_desc_support) 324 writel(le32_to_cpu(req_desc->u.low), 325 &instance->reg_set->inbound_single_queue_port); 326 else 327 megasas_write_64bit_req_desc(instance, req_desc); 328 } 329 330 /** 331 * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here 332 * @instance: Adapter soft state 333 * @fw_boot_context: Whether this function called during probe or after OCR 334 * 335 * This function is only for fusion controllers. 336 * Update host can queue, if firmware downgrade max supported firmware commands. 337 * Firmware upgrade case will be skiped because underlying firmware has 338 * more resource than exposed to the OS. 339 * 340 */ 341 static void 342 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context) 343 { 344 u16 cur_max_fw_cmds = 0; 345 u16 ldio_threshold = 0; 346 347 /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */ 348 if (instance->adapter_type < VENTURA_SERIES) 349 cur_max_fw_cmds = 350 megasas_readl(instance, 351 &instance->reg_set->outbound_scratch_pad_2) & 0x00FFFF; 352 353 if (dual_qdepth_disable || !cur_max_fw_cmds) 354 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF; 355 else 356 ldio_threshold = 357 (instance->instancet->read_fw_status_reg(instance) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS; 358 359 dev_info(&instance->pdev->dev, 360 "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n", 361 cur_max_fw_cmds, ldio_threshold); 362 363 if (fw_boot_context == OCR_CONTEXT) { 364 cur_max_fw_cmds = cur_max_fw_cmds - 1; 365 if (cur_max_fw_cmds < instance->max_fw_cmds) { 366 instance->cur_can_queue = 367 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS + 368 MEGASAS_FUSION_IOCTL_CMDS); 369 instance->host->can_queue = instance->cur_can_queue; 370 instance->ldio_threshold = ldio_threshold; 371 } 372 } else { 373 instance->max_fw_cmds = cur_max_fw_cmds; 374 instance->ldio_threshold = ldio_threshold; 375 376 if (reset_devices) 377 instance->max_fw_cmds = min(instance->max_fw_cmds, 378 (u16)MEGASAS_KDUMP_QUEUE_DEPTH); 379 /* 380 * Reduce the max supported cmds by 1. This is to ensure that the 381 * reply_q_sz (1 more than the max cmd that driver may send) 382 * does not exceed max cmds that the FW can support 383 */ 384 instance->max_fw_cmds = instance->max_fw_cmds-1; 385 } 386 } 387 388 static inline void 389 megasas_get_msix_index(struct megasas_instance *instance, 390 struct scsi_cmnd *scmd, 391 struct megasas_cmd_fusion *cmd, 392 u8 data_arms) 393 { 394 if (instance->perf_mode == MR_BALANCED_PERF_MODE && 395 (megasas_sdev_busy_read(instance, scmd) > 396 (data_arms * MR_DEVICE_HIGH_IOPS_DEPTH))) { 397 cmd->request_desc->SCSIIO.MSIxIndex = 398 mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) / 399 MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start); 400 } else if (instance->msix_load_balance) { 401 cmd->request_desc->SCSIIO.MSIxIndex = 402 (mega_mod64(atomic64_add_return(1, &instance->total_io_count), 403 instance->msix_vectors)); 404 } else if (instance->host->nr_hw_queues > 1) { 405 u32 tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd)); 406 407 cmd->request_desc->SCSIIO.MSIxIndex = blk_mq_unique_tag_to_hwq(tag) + 408 instance->low_latency_index_start; 409 } else { 410 cmd->request_desc->SCSIIO.MSIxIndex = 411 instance->reply_map[raw_smp_processor_id()]; 412 } 413 } 414 415 /** 416 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool 417 * @instance: Adapter soft state 418 */ 419 void 420 megasas_free_cmds_fusion(struct megasas_instance *instance) 421 { 422 int i; 423 struct fusion_context *fusion = instance->ctrl_context; 424 struct megasas_cmd_fusion *cmd; 425 426 if (fusion->sense) 427 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 428 fusion->sense_phys_addr); 429 430 /* SG */ 431 if (fusion->cmd_list) { 432 for (i = 0; i < instance->max_mpt_cmds; i++) { 433 cmd = fusion->cmd_list[i]; 434 if (cmd) { 435 if (cmd->sg_frame) 436 dma_pool_free(fusion->sg_dma_pool, 437 cmd->sg_frame, 438 cmd->sg_frame_phys_addr); 439 } 440 kfree(cmd); 441 } 442 kfree(fusion->cmd_list); 443 } 444 445 if (fusion->sg_dma_pool) { 446 dma_pool_destroy(fusion->sg_dma_pool); 447 fusion->sg_dma_pool = NULL; 448 } 449 if (fusion->sense_dma_pool) { 450 dma_pool_destroy(fusion->sense_dma_pool); 451 fusion->sense_dma_pool = NULL; 452 } 453 454 455 /* Reply Frame, Desc*/ 456 if (instance->is_rdpq) 457 megasas_free_rdpq_fusion(instance); 458 else 459 megasas_free_reply_fusion(instance); 460 461 /* Request Frame, Desc*/ 462 if (fusion->req_frames_desc) 463 dma_free_coherent(&instance->pdev->dev, 464 fusion->request_alloc_sz, fusion->req_frames_desc, 465 fusion->req_frames_desc_phys); 466 if (fusion->io_request_frames) 467 dma_pool_free(fusion->io_request_frames_pool, 468 fusion->io_request_frames, 469 fusion->io_request_frames_phys); 470 if (fusion->io_request_frames_pool) { 471 dma_pool_destroy(fusion->io_request_frames_pool); 472 fusion->io_request_frames_pool = NULL; 473 } 474 } 475 476 /** 477 * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames 478 * @instance: Adapter soft state 479 * 480 */ 481 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance) 482 { 483 int i; 484 u16 max_cmd; 485 struct fusion_context *fusion; 486 struct megasas_cmd_fusion *cmd; 487 int sense_sz; 488 u32 offset; 489 490 fusion = instance->ctrl_context; 491 max_cmd = instance->max_fw_cmds; 492 sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE; 493 494 fusion->sg_dma_pool = 495 dma_pool_create("mr_sg", &instance->pdev->dev, 496 instance->max_chain_frame_sz, 497 MR_DEFAULT_NVME_PAGE_SIZE, 0); 498 /* SCSI_SENSE_BUFFERSIZE = 96 bytes */ 499 fusion->sense_dma_pool = 500 dma_pool_create("mr_sense", &instance->pdev->dev, 501 sense_sz, 64, 0); 502 503 if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) { 504 dev_err(&instance->pdev->dev, 505 "Failed from %s %d\n", __func__, __LINE__); 506 return -ENOMEM; 507 } 508 509 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 510 GFP_KERNEL, &fusion->sense_phys_addr); 511 if (!fusion->sense) { 512 dev_err(&instance->pdev->dev, 513 "failed from %s %d\n", __func__, __LINE__); 514 return -ENOMEM; 515 } 516 517 /* sense buffer, request frame and reply desc pool requires to be in 518 * same 4 gb region. Below function will check this. 519 * In case of failure, new pci pool will be created with updated 520 * alignment. 521 * Older allocation and pool will be destroyed. 522 * Alignment will be used such a way that next allocation if success, 523 * will always meet same 4gb region requirement. 524 * Actual requirement is not alignment, but we need start and end of 525 * DMA address must have same upper 32 bit address. 526 */ 527 528 if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr, 529 sense_sz)) { 530 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 531 fusion->sense_phys_addr); 532 fusion->sense = NULL; 533 dma_pool_destroy(fusion->sense_dma_pool); 534 535 fusion->sense_dma_pool = 536 dma_pool_create("mr_sense_align", &instance->pdev->dev, 537 sense_sz, roundup_pow_of_two(sense_sz), 538 0); 539 if (!fusion->sense_dma_pool) { 540 dev_err(&instance->pdev->dev, 541 "Failed from %s %d\n", __func__, __LINE__); 542 return -ENOMEM; 543 } 544 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 545 GFP_KERNEL, 546 &fusion->sense_phys_addr); 547 if (!fusion->sense) { 548 dev_err(&instance->pdev->dev, 549 "failed from %s %d\n", __func__, __LINE__); 550 return -ENOMEM; 551 } 552 } 553 554 /* 555 * Allocate and attach a frame to each of the commands in cmd_list 556 */ 557 for (i = 0; i < max_cmd; i++) { 558 cmd = fusion->cmd_list[i]; 559 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool, 560 GFP_KERNEL, &cmd->sg_frame_phys_addr); 561 562 offset = SCSI_SENSE_BUFFERSIZE * i; 563 cmd->sense = (u8 *)fusion->sense + offset; 564 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 565 566 if (!cmd->sg_frame) { 567 dev_err(&instance->pdev->dev, 568 "Failed from %s %d\n", __func__, __LINE__); 569 return -ENOMEM; 570 } 571 } 572 573 /* create sense buffer for the raid 1/10 fp */ 574 for (i = max_cmd; i < instance->max_mpt_cmds; i++) { 575 cmd = fusion->cmd_list[i]; 576 offset = SCSI_SENSE_BUFFERSIZE * i; 577 cmd->sense = (u8 *)fusion->sense + offset; 578 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 579 580 } 581 582 return 0; 583 } 584 585 static int 586 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance) 587 { 588 u32 max_mpt_cmd, i, j; 589 struct fusion_context *fusion; 590 591 fusion = instance->ctrl_context; 592 593 max_mpt_cmd = instance->max_mpt_cmds; 594 595 /* 596 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. 597 * Allocate the dynamic array first and then allocate individual 598 * commands. 599 */ 600 fusion->cmd_list = 601 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *), 602 GFP_KERNEL); 603 if (!fusion->cmd_list) { 604 dev_err(&instance->pdev->dev, 605 "Failed from %s %d\n", __func__, __LINE__); 606 return -ENOMEM; 607 } 608 609 for (i = 0; i < max_mpt_cmd; i++) { 610 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion), 611 GFP_KERNEL); 612 if (!fusion->cmd_list[i]) { 613 for (j = 0; j < i; j++) 614 kfree(fusion->cmd_list[j]); 615 kfree(fusion->cmd_list); 616 dev_err(&instance->pdev->dev, 617 "Failed from %s %d\n", __func__, __LINE__); 618 return -ENOMEM; 619 } 620 } 621 622 return 0; 623 } 624 625 static int 626 megasas_alloc_request_fusion(struct megasas_instance *instance) 627 { 628 struct fusion_context *fusion; 629 630 fusion = instance->ctrl_context; 631 632 retry_alloc: 633 fusion->io_request_frames_pool = 634 dma_pool_create("mr_ioreq", &instance->pdev->dev, 635 fusion->io_frames_alloc_sz, 16, 0); 636 637 if (!fusion->io_request_frames_pool) { 638 dev_err(&instance->pdev->dev, 639 "Failed from %s %d\n", __func__, __LINE__); 640 return -ENOMEM; 641 } 642 643 fusion->io_request_frames = 644 dma_pool_alloc(fusion->io_request_frames_pool, 645 GFP_KERNEL | __GFP_NOWARN, 646 &fusion->io_request_frames_phys); 647 if (!fusion->io_request_frames) { 648 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) { 649 instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT; 650 dma_pool_destroy(fusion->io_request_frames_pool); 651 megasas_configure_queue_sizes(instance); 652 goto retry_alloc; 653 } else { 654 dev_err(&instance->pdev->dev, 655 "Failed from %s %d\n", __func__, __LINE__); 656 return -ENOMEM; 657 } 658 } 659 660 if (!megasas_check_same_4gb_region(instance, 661 fusion->io_request_frames_phys, 662 fusion->io_frames_alloc_sz)) { 663 dma_pool_free(fusion->io_request_frames_pool, 664 fusion->io_request_frames, 665 fusion->io_request_frames_phys); 666 fusion->io_request_frames = NULL; 667 dma_pool_destroy(fusion->io_request_frames_pool); 668 669 fusion->io_request_frames_pool = 670 dma_pool_create("mr_ioreq_align", 671 &instance->pdev->dev, 672 fusion->io_frames_alloc_sz, 673 roundup_pow_of_two(fusion->io_frames_alloc_sz), 674 0); 675 676 if (!fusion->io_request_frames_pool) { 677 dev_err(&instance->pdev->dev, 678 "Failed from %s %d\n", __func__, __LINE__); 679 return -ENOMEM; 680 } 681 682 fusion->io_request_frames = 683 dma_pool_alloc(fusion->io_request_frames_pool, 684 GFP_KERNEL | __GFP_NOWARN, 685 &fusion->io_request_frames_phys); 686 687 if (!fusion->io_request_frames) { 688 dev_err(&instance->pdev->dev, 689 "Failed from %s %d\n", __func__, __LINE__); 690 return -ENOMEM; 691 } 692 } 693 694 fusion->req_frames_desc = 695 dma_alloc_coherent(&instance->pdev->dev, 696 fusion->request_alloc_sz, 697 &fusion->req_frames_desc_phys, GFP_KERNEL); 698 if (!fusion->req_frames_desc) { 699 dev_err(&instance->pdev->dev, 700 "Failed from %s %d\n", __func__, __LINE__); 701 return -ENOMEM; 702 } 703 704 return 0; 705 } 706 707 static int 708 megasas_alloc_reply_fusion(struct megasas_instance *instance) 709 { 710 int i, count; 711 struct fusion_context *fusion; 712 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 713 fusion = instance->ctrl_context; 714 715 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 716 count += instance->iopoll_q_count; 717 718 fusion->reply_frames_desc_pool = 719 dma_pool_create("mr_reply", &instance->pdev->dev, 720 fusion->reply_alloc_sz * count, 16, 0); 721 722 if (!fusion->reply_frames_desc_pool) { 723 dev_err(&instance->pdev->dev, 724 "Failed from %s %d\n", __func__, __LINE__); 725 return -ENOMEM; 726 } 727 728 fusion->reply_frames_desc[0] = 729 dma_pool_alloc(fusion->reply_frames_desc_pool, 730 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]); 731 if (!fusion->reply_frames_desc[0]) { 732 dev_err(&instance->pdev->dev, 733 "Failed from %s %d\n", __func__, __LINE__); 734 return -ENOMEM; 735 } 736 737 if (!megasas_check_same_4gb_region(instance, 738 fusion->reply_frames_desc_phys[0], 739 (fusion->reply_alloc_sz * count))) { 740 dma_pool_free(fusion->reply_frames_desc_pool, 741 fusion->reply_frames_desc[0], 742 fusion->reply_frames_desc_phys[0]); 743 fusion->reply_frames_desc[0] = NULL; 744 dma_pool_destroy(fusion->reply_frames_desc_pool); 745 746 fusion->reply_frames_desc_pool = 747 dma_pool_create("mr_reply_align", 748 &instance->pdev->dev, 749 fusion->reply_alloc_sz * count, 750 roundup_pow_of_two(fusion->reply_alloc_sz * count), 751 0); 752 753 if (!fusion->reply_frames_desc_pool) { 754 dev_err(&instance->pdev->dev, 755 "Failed from %s %d\n", __func__, __LINE__); 756 return -ENOMEM; 757 } 758 759 fusion->reply_frames_desc[0] = 760 dma_pool_alloc(fusion->reply_frames_desc_pool, 761 GFP_KERNEL, 762 &fusion->reply_frames_desc_phys[0]); 763 764 if (!fusion->reply_frames_desc[0]) { 765 dev_err(&instance->pdev->dev, 766 "Failed from %s %d\n", __func__, __LINE__); 767 return -ENOMEM; 768 } 769 } 770 771 reply_desc = fusion->reply_frames_desc[0]; 772 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) 773 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 774 775 /* This is not a rdpq mode, but driver still populate 776 * reply_frame_desc array to use same msix index in ISR path. 777 */ 778 for (i = 0; i < (count - 1); i++) 779 fusion->reply_frames_desc[i + 1] = 780 fusion->reply_frames_desc[i] + 781 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION); 782 783 return 0; 784 } 785 786 static int 787 megasas_alloc_rdpq_fusion(struct megasas_instance *instance) 788 { 789 int i, j, k, msix_count; 790 struct fusion_context *fusion; 791 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 792 union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT]; 793 dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT]; 794 u8 dma_alloc_count, abs_index; 795 u32 chunk_size, array_size, offset; 796 797 fusion = instance->ctrl_context; 798 chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK; 799 array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * 800 MAX_MSIX_QUEUES_FUSION; 801 802 fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev, 803 array_size, &fusion->rdpq_phys, 804 GFP_KERNEL); 805 if (!fusion->rdpq_virt) { 806 dev_err(&instance->pdev->dev, 807 "Failed from %s %d\n", __func__, __LINE__); 808 return -ENOMEM; 809 } 810 811 msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 812 msix_count += instance->iopoll_q_count; 813 814 fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq", 815 &instance->pdev->dev, 816 chunk_size, 16, 0); 817 fusion->reply_frames_desc_pool_align = 818 dma_pool_create("mr_rdpq_align", 819 &instance->pdev->dev, 820 chunk_size, 821 roundup_pow_of_two(chunk_size), 822 0); 823 824 if (!fusion->reply_frames_desc_pool || 825 !fusion->reply_frames_desc_pool_align) { 826 dev_err(&instance->pdev->dev, 827 "Failed from %s %d\n", __func__, __LINE__); 828 return -ENOMEM; 829 } 830 831 /* 832 * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and 833 * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be 834 * within 4GB boundary and also reply queues in a set must have same 835 * upper 32-bits in their memory address. so here driver is allocating the 836 * DMA'able memory for reply queues according. Driver uses limitation of 837 * VENTURA_SERIES to manage INVADER_SERIES as well. 838 */ 839 dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK); 840 841 for (i = 0; i < dma_alloc_count; i++) { 842 rdpq_chunk_virt[i] = 843 dma_pool_alloc(fusion->reply_frames_desc_pool, 844 GFP_KERNEL, &rdpq_chunk_phys[i]); 845 if (!rdpq_chunk_virt[i]) { 846 dev_err(&instance->pdev->dev, 847 "Failed from %s %d\n", __func__, __LINE__); 848 return -ENOMEM; 849 } 850 /* reply desc pool requires to be in same 4 gb region. 851 * Below function will check this. 852 * In case of failure, new pci pool will be created with updated 853 * alignment. 854 * For RDPQ buffers, driver always allocate two separate pci pool. 855 * Alignment will be used such a way that next allocation if 856 * success, will always meet same 4gb region requirement. 857 * rdpq_tracker keep track of each buffer's physical, 858 * virtual address and pci pool descriptor. It will help driver 859 * while freeing the resources. 860 * 861 */ 862 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i], 863 chunk_size)) { 864 dma_pool_free(fusion->reply_frames_desc_pool, 865 rdpq_chunk_virt[i], 866 rdpq_chunk_phys[i]); 867 868 rdpq_chunk_virt[i] = 869 dma_pool_alloc(fusion->reply_frames_desc_pool_align, 870 GFP_KERNEL, &rdpq_chunk_phys[i]); 871 if (!rdpq_chunk_virt[i]) { 872 dev_err(&instance->pdev->dev, 873 "Failed from %s %d\n", 874 __func__, __LINE__); 875 return -ENOMEM; 876 } 877 fusion->rdpq_tracker[i].dma_pool_ptr = 878 fusion->reply_frames_desc_pool_align; 879 } else { 880 fusion->rdpq_tracker[i].dma_pool_ptr = 881 fusion->reply_frames_desc_pool; 882 } 883 884 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i]; 885 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i]; 886 } 887 888 for (k = 0; k < dma_alloc_count; k++) { 889 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) { 890 abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i; 891 892 if (abs_index == msix_count) 893 break; 894 offset = fusion->reply_alloc_sz * i; 895 fusion->rdpq_virt[abs_index].RDPQBaseAddress = 896 cpu_to_le64(rdpq_chunk_phys[k] + offset); 897 fusion->reply_frames_desc_phys[abs_index] = 898 rdpq_chunk_phys[k] + offset; 899 fusion->reply_frames_desc[abs_index] = 900 (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset); 901 902 reply_desc = fusion->reply_frames_desc[abs_index]; 903 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++) 904 reply_desc->Words = ULLONG_MAX; 905 } 906 } 907 908 return 0; 909 } 910 911 static void 912 megasas_free_rdpq_fusion(struct megasas_instance *instance) { 913 914 int i; 915 struct fusion_context *fusion; 916 917 fusion = instance->ctrl_context; 918 919 for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) { 920 if (fusion->rdpq_tracker[i].pool_entry_virt) 921 dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr, 922 fusion->rdpq_tracker[i].pool_entry_virt, 923 fusion->rdpq_tracker[i].pool_entry_phys); 924 925 } 926 927 dma_pool_destroy(fusion->reply_frames_desc_pool); 928 dma_pool_destroy(fusion->reply_frames_desc_pool_align); 929 930 if (fusion->rdpq_virt) 931 dma_free_coherent(&instance->pdev->dev, 932 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION, 933 fusion->rdpq_virt, fusion->rdpq_phys); 934 } 935 936 static void 937 megasas_free_reply_fusion(struct megasas_instance *instance) { 938 939 struct fusion_context *fusion; 940 941 fusion = instance->ctrl_context; 942 943 if (fusion->reply_frames_desc[0]) 944 dma_pool_free(fusion->reply_frames_desc_pool, 945 fusion->reply_frames_desc[0], 946 fusion->reply_frames_desc_phys[0]); 947 948 dma_pool_destroy(fusion->reply_frames_desc_pool); 949 950 } 951 952 953 /** 954 * megasas_alloc_cmds_fusion - Allocates the command packets 955 * @instance: Adapter soft state 956 * 957 * 958 * Each frame has a 32-bit field called context. This context is used to get 959 * back the megasas_cmd_fusion from the frame when a frame gets completed 960 * In this driver, the 32 bit values are the indices into an array cmd_list. 961 * This array is used only to look up the megasas_cmd_fusion given the context. 962 * The free commands themselves are maintained in a linked list called cmd_pool. 963 * 964 * cmds are formed in the io_request and sg_frame members of the 965 * megasas_cmd_fusion. The context field is used to get a request descriptor 966 * and is used as SMID of the cmd. 967 * SMID value range is from 1 to max_fw_cmds. 968 */ 969 static int 970 megasas_alloc_cmds_fusion(struct megasas_instance *instance) 971 { 972 int i; 973 struct fusion_context *fusion; 974 struct megasas_cmd_fusion *cmd; 975 u32 offset; 976 dma_addr_t io_req_base_phys; 977 u8 *io_req_base; 978 979 980 fusion = instance->ctrl_context; 981 982 if (megasas_alloc_request_fusion(instance)) 983 goto fail_exit; 984 985 if (instance->is_rdpq) { 986 if (megasas_alloc_rdpq_fusion(instance)) 987 goto fail_exit; 988 } else 989 if (megasas_alloc_reply_fusion(instance)) 990 goto fail_exit; 991 992 if (megasas_alloc_cmdlist_fusion(instance)) 993 goto fail_exit; 994 995 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */ 996 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 997 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 998 999 /* 1000 * Add all the commands to command pool (fusion->cmd_pool) 1001 */ 1002 1003 /* SMID 0 is reserved. Set SMID/index from 1 */ 1004 for (i = 0; i < instance->max_mpt_cmds; i++) { 1005 cmd = fusion->cmd_list[i]; 1006 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; 1007 memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); 1008 cmd->index = i + 1; 1009 cmd->scmd = NULL; 1010 cmd->sync_cmd_idx = 1011 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ? 1012 (i - instance->max_scsi_cmds) : 1013 (u32)ULONG_MAX; /* Set to Invalid */ 1014 cmd->instance = instance; 1015 cmd->io_request = 1016 (struct MPI2_RAID_SCSI_IO_REQUEST *) 1017 (io_req_base + offset); 1018 memset(cmd->io_request, 0, 1019 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); 1020 cmd->io_request_phys_addr = io_req_base_phys + offset; 1021 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 1022 } 1023 1024 if (megasas_create_sg_sense_fusion(instance)) 1025 goto fail_exit; 1026 1027 return 0; 1028 1029 fail_exit: 1030 megasas_free_cmds_fusion(instance); 1031 return -ENOMEM; 1032 } 1033 1034 /** 1035 * wait_and_poll - Issues a polling command 1036 * @instance: Adapter soft state 1037 * @cmd: Command packet to be issued 1038 * @seconds: Maximum poll time 1039 * 1040 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 1041 */ 1042 int 1043 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 1044 int seconds) 1045 { 1046 int i; 1047 struct megasas_header *frame_hdr = &cmd->frame->hdr; 1048 u32 status_reg; 1049 1050 u32 msecs = seconds * 1000; 1051 1052 /* 1053 * Wait for cmd_status to change 1054 */ 1055 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { 1056 rmb(); 1057 msleep(20); 1058 if (!(i % 5000)) { 1059 status_reg = instance->instancet->read_fw_status_reg(instance) 1060 & MFI_STATE_MASK; 1061 if (status_reg == MFI_STATE_FAULT) 1062 break; 1063 } 1064 } 1065 1066 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS) 1067 return DCMD_TIMEOUT; 1068 else if (frame_hdr->cmd_status == MFI_STAT_OK) 1069 return DCMD_SUCCESS; 1070 else 1071 return DCMD_FAILED; 1072 } 1073 1074 /** 1075 * megasas_ioc_init_fusion - Initializes the FW 1076 * @instance: Adapter soft state 1077 * 1078 * Issues the IOC Init cmd 1079 */ 1080 int 1081 megasas_ioc_init_fusion(struct megasas_instance *instance) 1082 { 1083 struct megasas_init_frame *init_frame; 1084 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL; 1085 dma_addr_t ioc_init_handle; 1086 struct megasas_cmd *cmd; 1087 u8 ret, cur_rdpq_mode; 1088 struct fusion_context *fusion; 1089 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc; 1090 int i; 1091 struct megasas_header *frame_hdr; 1092 const char *sys_info; 1093 MFI_CAPABILITIES *drv_ops; 1094 u32 scratch_pad_1; 1095 ktime_t time; 1096 bool cur_fw_64bit_dma_capable; 1097 bool cur_intr_coalescing; 1098 1099 fusion = instance->ctrl_context; 1100 1101 ioc_init_handle = fusion->ioc_init_request_phys; 1102 IOCInitMessage = fusion->ioc_init_request; 1103 1104 cmd = fusion->ioc_init_cmd; 1105 1106 scratch_pad_1 = megasas_readl 1107 (instance, &instance->reg_set->outbound_scratch_pad_1); 1108 1109 cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0; 1110 1111 if (instance->adapter_type == INVADER_SERIES) { 1112 cur_fw_64bit_dma_capable = 1113 (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false; 1114 1115 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) { 1116 dev_err(&instance->pdev->dev, "Driver was operating on 64bit " 1117 "DMA mask, but upcoming FW does not support 64bit DMA mask\n"); 1118 megaraid_sas_kill_hba(instance); 1119 ret = 1; 1120 goto fail_fw_init; 1121 } 1122 } 1123 1124 if (instance->is_rdpq && !cur_rdpq_mode) { 1125 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*" 1126 " from RDPQ mode to non RDPQ mode\n"); 1127 ret = 1; 1128 goto fail_fw_init; 1129 } 1130 1131 cur_intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ? 1132 true : false; 1133 1134 if ((instance->low_latency_index_start == 1135 MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing) 1136 instance->perf_mode = MR_BALANCED_PERF_MODE; 1137 1138 dev_info(&instance->pdev->dev, "Performance mode :%s (latency index = %d)\n", 1139 MEGASAS_PERF_MODE_2STR(instance->perf_mode), 1140 instance->low_latency_index_start); 1141 1142 instance->fw_sync_cache_support = (scratch_pad_1 & 1143 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0; 1144 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n", 1145 instance->fw_sync_cache_support ? "Yes" : "No"); 1146 1147 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); 1148 1149 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; 1150 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; 1151 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION); 1152 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); 1153 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4); 1154 1155 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth); 1156 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ? 1157 cpu_to_le64(fusion->rdpq_phys) : 1158 cpu_to_le64(fusion->reply_frames_desc_phys[0]); 1159 IOCInitMessage->MsgFlags = instance->is_rdpq ? 1160 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0; 1161 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); 1162 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr)); 1163 IOCInitMessage->HostMSIxVectors = instance->msix_vectors + instance->iopoll_q_count; 1164 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT; 1165 1166 time = ktime_get_real(); 1167 /* Convert to milliseconds as per FW requirement */ 1168 IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time)); 1169 1170 init_frame = (struct megasas_init_frame *)cmd->frame; 1171 memset(init_frame, 0, IOC_INIT_FRAME_SIZE); 1172 1173 frame_hdr = &cmd->frame->hdr; 1174 frame_hdr->cmd_status = 0xFF; 1175 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1176 1177 init_frame->cmd = MFI_CMD_INIT; 1178 init_frame->cmd_status = 0xFF; 1179 1180 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations); 1181 1182 /* driver support Extended MSIX */ 1183 if (instance->adapter_type >= INVADER_SERIES) 1184 drv_ops->mfi_capabilities.support_additional_msix = 1; 1185 /* driver supports HA / Remote LUN over Fast Path interface */ 1186 drv_ops->mfi_capabilities.support_fp_remote_lun = 1; 1187 1188 drv_ops->mfi_capabilities.support_max_255lds = 1; 1189 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1; 1190 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1; 1191 1192 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN) 1193 drv_ops->mfi_capabilities.support_ext_io_size = 1; 1194 1195 drv_ops->mfi_capabilities.support_fp_rlbypass = 1; 1196 if (!dual_qdepth_disable) 1197 drv_ops->mfi_capabilities.support_ext_queue_depth = 1; 1198 1199 drv_ops->mfi_capabilities.support_qd_throttling = 1; 1200 drv_ops->mfi_capabilities.support_pd_map_target_id = 1; 1201 drv_ops->mfi_capabilities.support_nvme_passthru = 1; 1202 drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1; 1203 1204 if (instance->consistent_mask_64bit) 1205 drv_ops->mfi_capabilities.support_64bit_mode = 1; 1206 1207 /* Convert capability to LE32 */ 1208 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); 1209 1210 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID); 1211 if (instance->system_info_buf && sys_info) { 1212 memcpy(instance->system_info_buf->systemId, sys_info, 1213 strlen(sys_info) > 64 ? 64 : strlen(sys_info)); 1214 instance->system_info_buf->systemIdLength = 1215 strlen(sys_info) > 64 ? 64 : strlen(sys_info); 1216 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h)); 1217 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h)); 1218 } 1219 1220 init_frame->queue_info_new_phys_addr_hi = 1221 cpu_to_le32(upper_32_bits(ioc_init_handle)); 1222 init_frame->queue_info_new_phys_addr_lo = 1223 cpu_to_le32(lower_32_bits(ioc_init_handle)); 1224 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); 1225 1226 /* 1227 * Each bit in replyqueue_mask represents one group of MSI-x vectors 1228 * (each group has 8 vectors) 1229 */ 1230 switch (instance->perf_mode) { 1231 case MR_BALANCED_PERF_MODE: 1232 init_frame->replyqueue_mask = 1233 cpu_to_le16(~(~0 << instance->low_latency_index_start/8)); 1234 break; 1235 case MR_IOPS_PERF_MODE: 1236 init_frame->replyqueue_mask = 1237 cpu_to_le16(~(~0 << instance->msix_vectors/8)); 1238 break; 1239 } 1240 1241 1242 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr)); 1243 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr)); 1244 req_desc.MFAIo.RequestFlags = 1245 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << 1246 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 1247 1248 /* 1249 * disable the intr before firing the init frame 1250 */ 1251 instance->instancet->disable_intr(instance); 1252 1253 for (i = 0; i < (10 * 1000); i += 20) { 1254 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1) 1255 msleep(20); 1256 else 1257 break; 1258 } 1259 1260 /* For AERO also, IOC_INIT requires 64 bit descriptor write */ 1261 megasas_write_64bit_req_desc(instance, &req_desc); 1262 1263 wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS); 1264 1265 frame_hdr = &cmd->frame->hdr; 1266 if (frame_hdr->cmd_status != 0) { 1267 ret = 1; 1268 goto fail_fw_init; 1269 } 1270 1271 if (instance->adapter_type >= AERO_SERIES) { 1272 scratch_pad_1 = megasas_readl 1273 (instance, &instance->reg_set->outbound_scratch_pad_1); 1274 1275 instance->atomic_desc_support = 1276 (scratch_pad_1 & MR_ATOMIC_DESCRIPTOR_SUPPORT_OFFSET) ? 1 : 0; 1277 1278 dev_info(&instance->pdev->dev, "FW supports atomic descriptor\t: %s\n", 1279 instance->atomic_desc_support ? "Yes" : "No"); 1280 } 1281 1282 return 0; 1283 1284 fail_fw_init: 1285 dev_err(&instance->pdev->dev, 1286 "Init cmd return status FAILED for SCSI host %d\n", 1287 instance->host->host_no); 1288 1289 return ret; 1290 } 1291 1292 /** 1293 * megasas_sync_pd_seq_num - JBOD SEQ MAP 1294 * @instance: Adapter soft state 1295 * @pend: set to 1, if it is pended jbod map. 1296 * 1297 * Issue Jbod map to the firmware. If it is pended command, 1298 * issue command and return. If it is first instance of jbod map 1299 * issue and receive command. 1300 */ 1301 int 1302 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { 1303 int ret = 0; 1304 size_t pd_seq_map_sz; 1305 struct megasas_cmd *cmd; 1306 struct megasas_dcmd_frame *dcmd; 1307 struct fusion_context *fusion = instance->ctrl_context; 1308 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1309 dma_addr_t pd_seq_h; 1310 1311 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; 1312 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; 1313 pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES - 1); 1314 1315 cmd = megasas_get_cmd(instance); 1316 if (!cmd) { 1317 dev_err(&instance->pdev->dev, 1318 "Could not get mfi cmd. Fail from %s %d\n", 1319 __func__, __LINE__); 1320 return -ENOMEM; 1321 } 1322 1323 dcmd = &cmd->frame->dcmd; 1324 1325 memset(pd_sync, 0, pd_seq_map_sz); 1326 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1327 1328 if (pend) { 1329 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1330 dcmd->flags = MFI_FRAME_DIR_WRITE; 1331 instance->jbod_seq_cmd = cmd; 1332 } else { 1333 dcmd->flags = MFI_FRAME_DIR_READ; 1334 } 1335 1336 dcmd->cmd = MFI_CMD_DCMD; 1337 dcmd->cmd_status = 0xFF; 1338 dcmd->sge_count = 1; 1339 dcmd->timeout = 0; 1340 dcmd->pad_0 = 0; 1341 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz); 1342 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO); 1343 1344 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz); 1345 1346 if (pend) { 1347 instance->instancet->issue_dcmd(instance, cmd); 1348 return 0; 1349 } 1350 1351 /* Below code is only for non pended DCMD */ 1352 if (!instance->mask_interrupts) 1353 ret = megasas_issue_blocked_cmd(instance, cmd, 1354 MFI_IO_TIMEOUT_SECS); 1355 else 1356 ret = megasas_issue_polled(instance, cmd); 1357 1358 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) { 1359 dev_warn(&instance->pdev->dev, 1360 "driver supports max %d JBOD, but FW reports %d\n", 1361 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count)); 1362 ret = -EINVAL; 1363 } 1364 1365 if (ret == DCMD_TIMEOUT) 1366 dev_warn(&instance->pdev->dev, 1367 "%s DCMD timed out, continue without JBOD sequence map\n", 1368 __func__); 1369 1370 if (ret == DCMD_SUCCESS) 1371 instance->pd_seq_map_id++; 1372 1373 megasas_return_cmd(instance, cmd); 1374 return ret; 1375 } 1376 1377 /* 1378 * megasas_get_ld_map_info - Returns FW's ld_map structure 1379 * @instance: Adapter soft state 1380 * @pend: Pend the command or not 1381 * Issues an internal command (DCMD) to get the FW's controller PD 1382 * list structure. This information is mainly used to find out SYSTEM 1383 * supported by the FW. 1384 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO 1385 * dcmd.mbox.b[0] - number of LDs being sync'd 1386 * dcmd.mbox.b[1] - 0 - complete command immediately. 1387 * - 1 - pend till config change 1388 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP 1389 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and 1390 * uses extended struct MR_FW_RAID_MAP_EXT 1391 */ 1392 static int 1393 megasas_get_ld_map_info(struct megasas_instance *instance) 1394 { 1395 int ret = 0; 1396 struct megasas_cmd *cmd; 1397 struct megasas_dcmd_frame *dcmd; 1398 void *ci; 1399 dma_addr_t ci_h = 0; 1400 u32 size_map_info; 1401 struct fusion_context *fusion; 1402 1403 cmd = megasas_get_cmd(instance); 1404 1405 if (!cmd) { 1406 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n"); 1407 return -ENOMEM; 1408 } 1409 1410 fusion = instance->ctrl_context; 1411 1412 if (!fusion) { 1413 megasas_return_cmd(instance, cmd); 1414 return -ENXIO; 1415 } 1416 1417 dcmd = &cmd->frame->dcmd; 1418 1419 size_map_info = fusion->current_map_sz; 1420 1421 ci = (void *) fusion->ld_map[(instance->map_id & 1)]; 1422 ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; 1423 1424 if (!ci) { 1425 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n"); 1426 megasas_return_cmd(instance, cmd); 1427 return -ENOMEM; 1428 } 1429 1430 memset(ci, 0, fusion->max_map_sz); 1431 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1432 dcmd->cmd = MFI_CMD_DCMD; 1433 dcmd->cmd_status = 0xFF; 1434 dcmd->sge_count = 1; 1435 dcmd->flags = MFI_FRAME_DIR_READ; 1436 dcmd->timeout = 0; 1437 dcmd->pad_0 = 0; 1438 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1439 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1440 1441 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1442 1443 if (!instance->mask_interrupts) 1444 ret = megasas_issue_blocked_cmd(instance, cmd, 1445 MFI_IO_TIMEOUT_SECS); 1446 else 1447 ret = megasas_issue_polled(instance, cmd); 1448 1449 if (ret == DCMD_TIMEOUT) 1450 dev_warn(&instance->pdev->dev, 1451 "%s DCMD timed out, RAID map is disabled\n", 1452 __func__); 1453 1454 megasas_return_cmd(instance, cmd); 1455 1456 return ret; 1457 } 1458 1459 u8 1460 megasas_get_map_info(struct megasas_instance *instance) 1461 { 1462 struct fusion_context *fusion = instance->ctrl_context; 1463 1464 fusion->fast_path_io = 0; 1465 if (!megasas_get_ld_map_info(instance)) { 1466 if (MR_ValidateMapInfo(instance, instance->map_id)) { 1467 fusion->fast_path_io = 1; 1468 return 0; 1469 } 1470 } 1471 return 1; 1472 } 1473 1474 /* 1475 * megasas_sync_map_info - Returns FW's ld_map structure 1476 * @instance: Adapter soft state 1477 * 1478 * Issues an internal command (DCMD) to get the FW's controller PD 1479 * list structure. This information is mainly used to find out SYSTEM 1480 * supported by the FW. 1481 */ 1482 int 1483 megasas_sync_map_info(struct megasas_instance *instance) 1484 { 1485 int i; 1486 struct megasas_cmd *cmd; 1487 struct megasas_dcmd_frame *dcmd; 1488 u16 num_lds; 1489 struct fusion_context *fusion; 1490 struct MR_LD_TARGET_SYNC *ci = NULL; 1491 struct MR_DRV_RAID_MAP_ALL *map; 1492 struct MR_LD_RAID *raid; 1493 struct MR_LD_TARGET_SYNC *ld_sync; 1494 dma_addr_t ci_h = 0; 1495 u32 size_map_info; 1496 1497 cmd = megasas_get_cmd(instance); 1498 1499 if (!cmd) { 1500 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n"); 1501 return -ENOMEM; 1502 } 1503 1504 fusion = instance->ctrl_context; 1505 1506 if (!fusion) { 1507 megasas_return_cmd(instance, cmd); 1508 return 1; 1509 } 1510 1511 map = fusion->ld_drv_map[instance->map_id & 1]; 1512 1513 num_lds = le16_to_cpu(map->raidMap.ldCount); 1514 1515 dcmd = &cmd->frame->dcmd; 1516 1517 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1518 1519 ci = (struct MR_LD_TARGET_SYNC *) 1520 fusion->ld_map[(instance->map_id - 1) & 1]; 1521 memset(ci, 0, fusion->max_map_sz); 1522 1523 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; 1524 1525 ld_sync = (struct MR_LD_TARGET_SYNC *)ci; 1526 1527 for (i = 0; i < num_lds; i++, ld_sync++) { 1528 raid = MR_LdRaidGet(i, map); 1529 ld_sync->targetId = MR_GetLDTgtId(i, map); 1530 ld_sync->seqNum = raid->seqNum; 1531 } 1532 1533 size_map_info = fusion->current_map_sz; 1534 1535 dcmd->cmd = MFI_CMD_DCMD; 1536 dcmd->cmd_status = 0xFF; 1537 dcmd->sge_count = 1; 1538 dcmd->flags = MFI_FRAME_DIR_WRITE; 1539 dcmd->timeout = 0; 1540 dcmd->pad_0 = 0; 1541 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1542 dcmd->mbox.b[0] = num_lds; 1543 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1544 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1545 1546 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1547 1548 instance->map_update_cmd = cmd; 1549 1550 instance->instancet->issue_dcmd(instance, cmd); 1551 1552 return 0; 1553 } 1554 1555 /* 1556 * meagasas_display_intel_branding - Display branding string 1557 * @instance: per adapter object 1558 * 1559 * Return nothing. 1560 */ 1561 static void 1562 megasas_display_intel_branding(struct megasas_instance *instance) 1563 { 1564 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) 1565 return; 1566 1567 switch (instance->pdev->device) { 1568 case PCI_DEVICE_ID_LSI_INVADER: 1569 switch (instance->pdev->subsystem_device) { 1570 case MEGARAID_INTEL_RS3DC080_SSDID: 1571 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1572 instance->host->host_no, 1573 MEGARAID_INTEL_RS3DC080_BRANDING); 1574 break; 1575 case MEGARAID_INTEL_RS3DC040_SSDID: 1576 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1577 instance->host->host_no, 1578 MEGARAID_INTEL_RS3DC040_BRANDING); 1579 break; 1580 case MEGARAID_INTEL_RS3SC008_SSDID: 1581 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1582 instance->host->host_no, 1583 MEGARAID_INTEL_RS3SC008_BRANDING); 1584 break; 1585 case MEGARAID_INTEL_RS3MC044_SSDID: 1586 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1587 instance->host->host_no, 1588 MEGARAID_INTEL_RS3MC044_BRANDING); 1589 break; 1590 default: 1591 break; 1592 } 1593 break; 1594 case PCI_DEVICE_ID_LSI_FURY: 1595 switch (instance->pdev->subsystem_device) { 1596 case MEGARAID_INTEL_RS3WC080_SSDID: 1597 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1598 instance->host->host_no, 1599 MEGARAID_INTEL_RS3WC080_BRANDING); 1600 break; 1601 case MEGARAID_INTEL_RS3WC040_SSDID: 1602 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1603 instance->host->host_no, 1604 MEGARAID_INTEL_RS3WC040_BRANDING); 1605 break; 1606 default: 1607 break; 1608 } 1609 break; 1610 case PCI_DEVICE_ID_LSI_CUTLASS_52: 1611 case PCI_DEVICE_ID_LSI_CUTLASS_53: 1612 switch (instance->pdev->subsystem_device) { 1613 case MEGARAID_INTEL_RMS3BC160_SSDID: 1614 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1615 instance->host->host_no, 1616 MEGARAID_INTEL_RMS3BC160_BRANDING); 1617 break; 1618 default: 1619 break; 1620 } 1621 break; 1622 default: 1623 break; 1624 } 1625 } 1626 1627 /** 1628 * megasas_allocate_raid_maps - Allocate memory for RAID maps 1629 * @instance: Adapter soft state 1630 * 1631 * return: if success: return 0 1632 * failed: return -ENOMEM 1633 */ 1634 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) 1635 { 1636 struct fusion_context *fusion; 1637 int i = 0; 1638 1639 fusion = instance->ctrl_context; 1640 1641 fusion->drv_map_pages = get_order(fusion->drv_map_sz); 1642 1643 for (i = 0; i < 2; i++) { 1644 fusion->ld_map[i] = NULL; 1645 1646 fusion->ld_drv_map[i] = (void *) 1647 __get_free_pages(__GFP_ZERO | GFP_KERNEL, 1648 fusion->drv_map_pages); 1649 1650 if (!fusion->ld_drv_map[i]) { 1651 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); 1652 1653 if (!fusion->ld_drv_map[i]) { 1654 dev_err(&instance->pdev->dev, 1655 "Could not allocate memory for local map" 1656 " size requested: %d\n", 1657 fusion->drv_map_sz); 1658 goto ld_drv_map_alloc_fail; 1659 } 1660 } 1661 } 1662 1663 for (i = 0; i < 2; i++) { 1664 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, 1665 fusion->max_map_sz, 1666 &fusion->ld_map_phys[i], 1667 GFP_KERNEL); 1668 if (!fusion->ld_map[i]) { 1669 dev_err(&instance->pdev->dev, 1670 "Could not allocate memory for map info %s:%d\n", 1671 __func__, __LINE__); 1672 goto ld_map_alloc_fail; 1673 } 1674 } 1675 1676 return 0; 1677 1678 ld_map_alloc_fail: 1679 for (i = 0; i < 2; i++) { 1680 if (fusion->ld_map[i]) 1681 dma_free_coherent(&instance->pdev->dev, 1682 fusion->max_map_sz, 1683 fusion->ld_map[i], 1684 fusion->ld_map_phys[i]); 1685 } 1686 1687 ld_drv_map_alloc_fail: 1688 for (i = 0; i < 2; i++) { 1689 if (fusion->ld_drv_map[i]) { 1690 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 1691 vfree(fusion->ld_drv_map[i]); 1692 else 1693 free_pages((ulong)fusion->ld_drv_map[i], 1694 fusion->drv_map_pages); 1695 } 1696 } 1697 1698 return -ENOMEM; 1699 } 1700 1701 /** 1702 * megasas_configure_queue_sizes - Calculate size of request desc queue, 1703 * reply desc queue, 1704 * IO request frame queue, set can_queue. 1705 * @instance: Adapter soft state 1706 * @return: void 1707 */ 1708 static inline 1709 void megasas_configure_queue_sizes(struct megasas_instance *instance) 1710 { 1711 struct fusion_context *fusion; 1712 u16 max_cmd; 1713 1714 fusion = instance->ctrl_context; 1715 max_cmd = instance->max_fw_cmds; 1716 1717 if (instance->adapter_type >= VENTURA_SERIES) 1718 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS; 1719 else 1720 instance->max_mpt_cmds = instance->max_fw_cmds; 1721 1722 instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds; 1723 instance->cur_can_queue = instance->max_scsi_cmds; 1724 instance->host->can_queue = instance->cur_can_queue; 1725 1726 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16; 1727 1728 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * 1729 instance->max_mpt_cmds; 1730 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) * 1731 (fusion->reply_q_depth); 1732 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + 1733 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1734 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */ 1735 } 1736 1737 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance) 1738 { 1739 struct fusion_context *fusion; 1740 struct megasas_cmd *cmd; 1741 1742 fusion = instance->ctrl_context; 1743 1744 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL); 1745 1746 if (!cmd) { 1747 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1748 __func__, __LINE__); 1749 return -ENOMEM; 1750 } 1751 1752 cmd->frame = dma_alloc_coherent(&instance->pdev->dev, 1753 IOC_INIT_FRAME_SIZE, 1754 &cmd->frame_phys_addr, GFP_KERNEL); 1755 1756 if (!cmd->frame) { 1757 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1758 __func__, __LINE__); 1759 kfree(cmd); 1760 return -ENOMEM; 1761 } 1762 1763 fusion->ioc_init_cmd = cmd; 1764 return 0; 1765 } 1766 1767 /** 1768 * megasas_free_ioc_init_cmd - Free IOC INIT command frame 1769 * @instance: Adapter soft state 1770 */ 1771 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance) 1772 { 1773 struct fusion_context *fusion; 1774 1775 fusion = instance->ctrl_context; 1776 1777 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame) 1778 dma_free_coherent(&instance->pdev->dev, 1779 IOC_INIT_FRAME_SIZE, 1780 fusion->ioc_init_cmd->frame, 1781 fusion->ioc_init_cmd->frame_phys_addr); 1782 1783 kfree(fusion->ioc_init_cmd); 1784 } 1785 1786 /** 1787 * megasas_init_adapter_fusion - Initializes the FW 1788 * @instance: Adapter soft state 1789 * 1790 * This is the main function for initializing firmware. 1791 */ 1792 static u32 1793 megasas_init_adapter_fusion(struct megasas_instance *instance) 1794 { 1795 struct fusion_context *fusion; 1796 u32 scratch_pad_1; 1797 int i = 0, count; 1798 u32 status_reg; 1799 1800 fusion = instance->ctrl_context; 1801 1802 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT); 1803 1804 /* 1805 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames 1806 */ 1807 instance->max_mfi_cmds = 1808 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS; 1809 1810 megasas_configure_queue_sizes(instance); 1811 1812 scratch_pad_1 = megasas_readl(instance, 1813 &instance->reg_set->outbound_scratch_pad_1); 1814 /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set, 1815 * Firmware support extended IO chain frame which is 4 times more than 1816 * legacy Firmware. 1817 * Legacy Firmware - Frame size is (8 * 128) = 1K 1818 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K 1819 */ 1820 if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK) 1821 instance->max_chain_frame_sz = 1822 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1823 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO; 1824 else 1825 instance->max_chain_frame_sz = 1826 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1827 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO; 1828 1829 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) { 1830 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n", 1831 instance->max_chain_frame_sz, 1832 MEGASAS_CHAIN_FRAME_SZ_MIN); 1833 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN; 1834 } 1835 1836 fusion->max_sge_in_main_msg = 1837 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1838 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; 1839 1840 fusion->max_sge_in_chain = 1841 instance->max_chain_frame_sz 1842 / sizeof(union MPI2_SGE_IO_UNION); 1843 1844 instance->max_num_sge = 1845 rounddown_pow_of_two(fusion->max_sge_in_main_msg 1846 + fusion->max_sge_in_chain - 2); 1847 1848 /* Used for pass thru MFI frame (DCMD) */ 1849 fusion->chain_offset_mfi_pthru = 1850 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; 1851 1852 fusion->chain_offset_io_request = 1853 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - 1854 sizeof(union MPI2_SGE_IO_UNION))/16; 1855 1856 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 1857 count += instance->iopoll_q_count; 1858 1859 for (i = 0 ; i < count; i++) 1860 fusion->last_reply_idx[i] = 0; 1861 1862 /* 1863 * For fusion adapters, 3 commands for IOCTL and 8 commands 1864 * for driver's internal DCMDs. 1865 */ 1866 instance->max_scsi_cmds = instance->max_fw_cmds - 1867 (MEGASAS_FUSION_INTERNAL_CMDS + 1868 MEGASAS_FUSION_IOCTL_CMDS); 1869 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); 1870 1871 for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) 1872 atomic_set(&fusion->busy_mq_poll[i], 0); 1873 1874 if (megasas_alloc_ioc_init_frame(instance)) 1875 return 1; 1876 1877 /* 1878 * Allocate memory for descriptors 1879 * Create a pool of commands 1880 */ 1881 if (megasas_alloc_cmds(instance)) 1882 goto fail_alloc_mfi_cmds; 1883 if (megasas_alloc_cmds_fusion(instance)) 1884 goto fail_alloc_cmds; 1885 1886 if (megasas_ioc_init_fusion(instance)) { 1887 status_reg = instance->instancet->read_fw_status_reg(instance); 1888 if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) && 1889 (status_reg & MFI_RESET_ADAPTER)) { 1890 /* Do a chip reset and then retry IOC INIT once */ 1891 if (megasas_adp_reset_wait_for_ready 1892 (instance, true, 0) == FAILED) 1893 goto fail_ioc_init; 1894 1895 if (megasas_ioc_init_fusion(instance)) 1896 goto fail_ioc_init; 1897 } else { 1898 goto fail_ioc_init; 1899 } 1900 } 1901 1902 megasas_display_intel_branding(instance); 1903 if (megasas_get_ctrl_info(instance)) { 1904 dev_err(&instance->pdev->dev, 1905 "Could not get controller info. Fail from %s %d\n", 1906 __func__, __LINE__); 1907 goto fail_ioc_init; 1908 } 1909 1910 instance->flag_ieee = 1; 1911 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; 1912 instance->threshold_reply_count = instance->max_fw_cmds / 4; 1913 fusion->fast_path_io = 0; 1914 1915 if (megasas_allocate_raid_maps(instance)) 1916 goto fail_ioc_init; 1917 1918 if (!megasas_get_map_info(instance)) 1919 megasas_sync_map_info(instance); 1920 1921 return 0; 1922 1923 fail_ioc_init: 1924 megasas_free_cmds_fusion(instance); 1925 fail_alloc_cmds: 1926 megasas_free_cmds(instance); 1927 fail_alloc_mfi_cmds: 1928 megasas_free_ioc_init_cmd(instance); 1929 return 1; 1930 } 1931 1932 /** 1933 * megasas_fault_detect_work - Worker function of 1934 * FW fault handling workqueue. 1935 * @work: FW fault work struct 1936 */ 1937 static void 1938 megasas_fault_detect_work(struct work_struct *work) 1939 { 1940 struct megasas_instance *instance = 1941 container_of(work, struct megasas_instance, 1942 fw_fault_work.work); 1943 u32 fw_state, dma_state, status; 1944 1945 /* Check the fw state */ 1946 fw_state = instance->instancet->read_fw_status_reg(instance) & 1947 MFI_STATE_MASK; 1948 1949 if (fw_state == MFI_STATE_FAULT) { 1950 dma_state = instance->instancet->read_fw_status_reg(instance) & 1951 MFI_STATE_DMADONE; 1952 /* Start collecting crash, if DMA bit is done */ 1953 if (instance->crash_dump_drv_support && 1954 instance->crash_dump_app_support && dma_state) { 1955 megasas_fusion_crash_dump(instance); 1956 } else { 1957 if (instance->unload == 0) { 1958 status = megasas_reset_fusion(instance->host, 0); 1959 if (status != SUCCESS) { 1960 dev_err(&instance->pdev->dev, 1961 "Failed from %s %d, do not re-arm timer\n", 1962 __func__, __LINE__); 1963 return; 1964 } 1965 } 1966 } 1967 } 1968 1969 if (instance->fw_fault_work_q) 1970 queue_delayed_work(instance->fw_fault_work_q, 1971 &instance->fw_fault_work, 1972 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL)); 1973 } 1974 1975 int 1976 megasas_fusion_start_watchdog(struct megasas_instance *instance) 1977 { 1978 /* Check if the Fault WQ is already started */ 1979 if (instance->fw_fault_work_q) 1980 return SUCCESS; 1981 1982 INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work); 1983 1984 snprintf(instance->fault_handler_work_q_name, 1985 sizeof(instance->fault_handler_work_q_name), 1986 "poll_megasas%d_status", instance->host->host_no); 1987 1988 instance->fw_fault_work_q = 1989 create_singlethread_workqueue(instance->fault_handler_work_q_name); 1990 if (!instance->fw_fault_work_q) { 1991 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1992 __func__, __LINE__); 1993 return FAILED; 1994 } 1995 1996 queue_delayed_work(instance->fw_fault_work_q, 1997 &instance->fw_fault_work, 1998 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL)); 1999 2000 return SUCCESS; 2001 } 2002 2003 void 2004 megasas_fusion_stop_watchdog(struct megasas_instance *instance) 2005 { 2006 struct workqueue_struct *wq; 2007 2008 if (instance->fw_fault_work_q) { 2009 wq = instance->fw_fault_work_q; 2010 instance->fw_fault_work_q = NULL; 2011 if (!cancel_delayed_work_sync(&instance->fw_fault_work)) 2012 flush_workqueue(wq); 2013 destroy_workqueue(wq); 2014 } 2015 } 2016 2017 /** 2018 * map_cmd_status - Maps FW cmd status to OS cmd status 2019 * @fusion: fusion context 2020 * @scmd: Pointer to cmd 2021 * @status: status of cmd returned by FW 2022 * @ext_status: ext status of cmd returned by FW 2023 * @data_length: command data length 2024 * @sense: command sense data 2025 */ 2026 static void 2027 map_cmd_status(struct fusion_context *fusion, 2028 struct scsi_cmnd *scmd, u8 status, u8 ext_status, 2029 u32 data_length, u8 *sense) 2030 { 2031 u8 cmd_type; 2032 int resid; 2033 2034 cmd_type = megasas_cmd_type(scmd); 2035 switch (status) { 2036 2037 case MFI_STAT_OK: 2038 scmd->result = DID_OK << 16; 2039 break; 2040 2041 case MFI_STAT_SCSI_IO_FAILED: 2042 case MFI_STAT_LD_INIT_IN_PROGRESS: 2043 scmd->result = (DID_ERROR << 16) | ext_status; 2044 break; 2045 2046 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2047 2048 scmd->result = (DID_OK << 16) | ext_status; 2049 if (ext_status == SAM_STAT_CHECK_CONDITION) { 2050 memcpy(scmd->sense_buffer, sense, 2051 SCSI_SENSE_BUFFERSIZE); 2052 } 2053 2054 /* 2055 * If the IO request is partially completed, then MR FW will 2056 * update "io_request->DataLength" field with actual number of 2057 * bytes transferred.Driver will set residual bytes count in 2058 * SCSI command structure. 2059 */ 2060 resid = (scsi_bufflen(scmd) - data_length); 2061 scsi_set_resid(scmd, resid); 2062 2063 if (resid && 2064 ((cmd_type == READ_WRITE_LDIO) || 2065 (cmd_type == READ_WRITE_SYSPDIO))) 2066 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" 2067 " requested/completed 0x%x/0x%x\n", 2068 status, scsi_bufflen(scmd), data_length); 2069 break; 2070 2071 case MFI_STAT_LD_OFFLINE: 2072 case MFI_STAT_DEVICE_NOT_FOUND: 2073 scmd->result = DID_BAD_TARGET << 16; 2074 break; 2075 case MFI_STAT_CONFIG_SEQ_MISMATCH: 2076 scmd->result = DID_IMM_RETRY << 16; 2077 break; 2078 default: 2079 scmd->result = DID_ERROR << 16; 2080 break; 2081 } 2082 } 2083 2084 /** 2085 * megasas_is_prp_possible - 2086 * Checks if native NVMe PRPs can be built for the IO 2087 * 2088 * @instance: Adapter soft state 2089 * @scmd: SCSI command from the mid-layer 2090 * @sge_count: scatter gather element count. 2091 * 2092 * Returns: true: PRPs can be built 2093 * false: IEEE SGLs needs to be built 2094 */ 2095 static bool 2096 megasas_is_prp_possible(struct megasas_instance *instance, 2097 struct scsi_cmnd *scmd, int sge_count) 2098 { 2099 u32 data_length = 0; 2100 struct scatterlist *sg_scmd; 2101 bool build_prp = false; 2102 u32 mr_nvme_pg_size; 2103 2104 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 2105 MR_DEFAULT_NVME_PAGE_SIZE); 2106 data_length = scsi_bufflen(scmd); 2107 sg_scmd = scsi_sglist(scmd); 2108 2109 /* 2110 * NVMe uses one PRP for each page (or part of a page) 2111 * look at the data length - if 4 pages or less then IEEE is OK 2112 * if > 5 pages then we need to build a native SGL 2113 * if > 4 and <= 5 pages, then check physical address of 1st SG entry 2114 * if this first size in the page is >= the residual beyond 4 pages 2115 * then use IEEE, otherwise use native SGL 2116 */ 2117 2118 if (data_length > (mr_nvme_pg_size * 5)) { 2119 build_prp = true; 2120 } else if ((data_length > (mr_nvme_pg_size * 4)) && 2121 (data_length <= (mr_nvme_pg_size * 5))) { 2122 /* check if 1st SG entry size is < residual beyond 4 pages */ 2123 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) 2124 build_prp = true; 2125 } 2126 2127 return build_prp; 2128 } 2129 2130 /** 2131 * megasas_make_prp_nvme - 2132 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only 2133 * 2134 * @instance: Adapter soft state 2135 * @scmd: SCSI command from the mid-layer 2136 * @sgl_ptr: SGL to be filled in 2137 * @cmd: Fusion command frame 2138 * @sge_count: scatter gather element count. 2139 * 2140 * Returns: true: PRPs are built 2141 * false: IEEE SGLs needs to be built 2142 */ 2143 static bool 2144 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, 2145 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2146 struct megasas_cmd_fusion *cmd, int sge_count) 2147 { 2148 int sge_len, offset, num_prp_in_chain = 0; 2149 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; 2150 u64 *ptr_sgl; 2151 dma_addr_t ptr_sgl_phys; 2152 u64 sge_addr; 2153 u32 page_mask, page_mask_result; 2154 struct scatterlist *sg_scmd; 2155 u32 first_prp_len; 2156 bool build_prp = false; 2157 int data_len = scsi_bufflen(scmd); 2158 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 2159 MR_DEFAULT_NVME_PAGE_SIZE); 2160 2161 build_prp = megasas_is_prp_possible(instance, scmd, sge_count); 2162 2163 if (!build_prp) 2164 return false; 2165 2166 /* 2167 * Nvme has a very convoluted prp format. One prp is required 2168 * for each page or partial page. Driver need to split up OS sg_list 2169 * entries if it is longer than one page or cross a page 2170 * boundary. Driver also have to insert a PRP list pointer entry as 2171 * the last entry in each physical page of the PRP list. 2172 * 2173 * NOTE: The first PRP "entry" is actually placed in the first 2174 * SGL entry in the main message as IEEE 64 format. The 2nd 2175 * entry in the main message is the chain element, and the rest 2176 * of the PRP entries are built in the contiguous pcie buffer. 2177 */ 2178 page_mask = mr_nvme_pg_size - 1; 2179 ptr_sgl = (u64 *)cmd->sg_frame; 2180 ptr_sgl_phys = cmd->sg_frame_phys_addr; 2181 memset(ptr_sgl, 0, instance->max_chain_frame_sz); 2182 2183 /* Build chain frame element which holds all prps except first*/ 2184 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) 2185 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); 2186 2187 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); 2188 main_chain_element->NextChainOffset = 0; 2189 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2190 IEEE_SGE_FLAGS_SYSTEM_ADDR | 2191 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; 2192 2193 /* Build first prp, sge need not to be page aligned*/ 2194 ptr_first_sgl = sgl_ptr; 2195 sg_scmd = scsi_sglist(scmd); 2196 sge_addr = sg_dma_address(sg_scmd); 2197 sge_len = sg_dma_len(sg_scmd); 2198 2199 offset = (u32)(sge_addr & page_mask); 2200 first_prp_len = mr_nvme_pg_size - offset; 2201 2202 ptr_first_sgl->Address = cpu_to_le64(sge_addr); 2203 ptr_first_sgl->Length = cpu_to_le32(first_prp_len); 2204 2205 data_len -= first_prp_len; 2206 2207 if (sge_len > first_prp_len) { 2208 sge_addr += first_prp_len; 2209 sge_len -= first_prp_len; 2210 } else if (sge_len == first_prp_len) { 2211 sg_scmd = sg_next(sg_scmd); 2212 sge_addr = sg_dma_address(sg_scmd); 2213 sge_len = sg_dma_len(sg_scmd); 2214 } 2215 2216 for (;;) { 2217 offset = (u32)(sge_addr & page_mask); 2218 2219 /* Put PRP pointer due to page boundary*/ 2220 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; 2221 if (unlikely(!page_mask_result)) { 2222 scmd_printk(KERN_NOTICE, 2223 scmd, "page boundary ptr_sgl: 0x%p\n", 2224 ptr_sgl); 2225 ptr_sgl_phys += 8; 2226 *ptr_sgl = cpu_to_le64(ptr_sgl_phys); 2227 ptr_sgl++; 2228 num_prp_in_chain++; 2229 } 2230 2231 *ptr_sgl = cpu_to_le64(sge_addr); 2232 ptr_sgl++; 2233 ptr_sgl_phys += 8; 2234 num_prp_in_chain++; 2235 2236 sge_addr += mr_nvme_pg_size; 2237 sge_len -= mr_nvme_pg_size; 2238 data_len -= mr_nvme_pg_size; 2239 2240 if (data_len <= 0) 2241 break; 2242 2243 if (sge_len > 0) 2244 continue; 2245 2246 sg_scmd = sg_next(sg_scmd); 2247 sge_addr = sg_dma_address(sg_scmd); 2248 sge_len = sg_dma_len(sg_scmd); 2249 } 2250 2251 main_chain_element->Length = 2252 cpu_to_le32(num_prp_in_chain * sizeof(u64)); 2253 2254 return build_prp; 2255 } 2256 2257 /** 2258 * megasas_make_sgl_fusion - Prepares 32-bit SGL 2259 * @instance: Adapter soft state 2260 * @scp: SCSI command from the mid-layer 2261 * @sgl_ptr: SGL to be filled in 2262 * @cmd: cmd we are working on 2263 * @sge_count: sge count 2264 * 2265 */ 2266 static void 2267 megasas_make_sgl_fusion(struct megasas_instance *instance, 2268 struct scsi_cmnd *scp, 2269 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2270 struct megasas_cmd_fusion *cmd, int sge_count) 2271 { 2272 int i, sg_processed; 2273 struct scatterlist *os_sgl; 2274 struct fusion_context *fusion; 2275 2276 fusion = instance->ctrl_context; 2277 2278 if (instance->adapter_type >= INVADER_SERIES) { 2279 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; 2280 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 2281 sgl_ptr_end->Flags = 0; 2282 } 2283 2284 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 2285 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); 2286 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); 2287 sgl_ptr->Flags = 0; 2288 if (instance->adapter_type >= INVADER_SERIES) 2289 if (i == sge_count - 1) 2290 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; 2291 sgl_ptr++; 2292 sg_processed = i + 1; 2293 2294 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && 2295 (sge_count > fusion->max_sge_in_main_msg)) { 2296 2297 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; 2298 if (instance->adapter_type >= INVADER_SERIES) { 2299 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2300 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != 2301 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) 2302 cmd->io_request->ChainOffset = 2303 fusion-> 2304 chain_offset_io_request; 2305 else 2306 cmd->io_request->ChainOffset = 0; 2307 } else 2308 cmd->io_request->ChainOffset = 2309 fusion->chain_offset_io_request; 2310 2311 sg_chain = sgl_ptr; 2312 /* Prepare chain element */ 2313 sg_chain->NextChainOffset = 0; 2314 if (instance->adapter_type >= INVADER_SERIES) 2315 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; 2316 else 2317 sg_chain->Flags = 2318 (IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2319 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); 2320 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); 2321 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); 2322 2323 sgl_ptr = 2324 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; 2325 memset(sgl_ptr, 0, instance->max_chain_frame_sz); 2326 } 2327 } 2328 } 2329 2330 /** 2331 * megasas_make_sgl - Build Scatter Gather List(SGLs) 2332 * @scp: SCSI command pointer 2333 * @instance: Soft instance of controller 2334 * @cmd: Fusion command pointer 2335 * 2336 * This function will build sgls based on device type. 2337 * For nvme drives, there is different way of building sgls in nvme native 2338 * format- PRPs(Physical Region Page). 2339 * 2340 * Returns the number of sg lists actually used, zero if the sg lists 2341 * is NULL, or -ENOMEM if the mapping failed 2342 */ 2343 static 2344 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, 2345 struct megasas_cmd_fusion *cmd) 2346 { 2347 int sge_count; 2348 bool build_prp = false; 2349 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; 2350 2351 sge_count = scsi_dma_map(scp); 2352 2353 if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) 2354 return sge_count; 2355 2356 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; 2357 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2358 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && 2359 (cmd->pd_interface == NVME_PD)) 2360 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, 2361 cmd, sge_count); 2362 2363 if (!build_prp) 2364 megasas_make_sgl_fusion(instance, scp, sgl_chain64, 2365 cmd, sge_count); 2366 2367 return sge_count; 2368 } 2369 2370 /** 2371 * megasas_set_pd_lba - Sets PD LBA 2372 * @io_request: IO request 2373 * @cdb_len: cdb length 2374 * @io_info: IO information 2375 * @scp: SCSI command 2376 * @local_map_ptr: Raid map 2377 * @ref_tag: Primary reference tag 2378 * 2379 * Used to set the PD LBA in CDB for FP IOs 2380 */ 2381 static void 2382 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, 2383 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, 2384 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) 2385 { 2386 struct MR_LD_RAID *raid; 2387 u16 ld; 2388 u64 start_blk = io_info->pdBlock; 2389 u8 *cdb = io_request->CDB.CDB32; 2390 u32 num_blocks = io_info->numBlocks; 2391 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; 2392 2393 /* Check if T10 PI (DIF) is enabled for this LD */ 2394 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); 2395 raid = MR_LdRaidGet(ld, local_map_ptr); 2396 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { 2397 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2398 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; 2399 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; 2400 2401 if (scp->sc_data_direction == DMA_FROM_DEVICE) 2402 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; 2403 else 2404 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; 2405 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; 2406 2407 /* LBA */ 2408 cdb[12] = (u8)((start_blk >> 56) & 0xff); 2409 cdb[13] = (u8)((start_blk >> 48) & 0xff); 2410 cdb[14] = (u8)((start_blk >> 40) & 0xff); 2411 cdb[15] = (u8)((start_blk >> 32) & 0xff); 2412 cdb[16] = (u8)((start_blk >> 24) & 0xff); 2413 cdb[17] = (u8)((start_blk >> 16) & 0xff); 2414 cdb[18] = (u8)((start_blk >> 8) & 0xff); 2415 cdb[19] = (u8)(start_blk & 0xff); 2416 2417 /* Logical block reference tag */ 2418 io_request->CDB.EEDP32.PrimaryReferenceTag = 2419 cpu_to_be32(ref_tag); 2420 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); 2421 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ 2422 2423 /* Transfer length */ 2424 cdb[28] = (u8)((num_blocks >> 24) & 0xff); 2425 cdb[29] = (u8)((num_blocks >> 16) & 0xff); 2426 cdb[30] = (u8)((num_blocks >> 8) & 0xff); 2427 cdb[31] = (u8)(num_blocks & 0xff); 2428 2429 /* set SCSI IO EEDPFlags */ 2430 if (scp->sc_data_direction == DMA_FROM_DEVICE) { 2431 io_request->EEDPFlags = cpu_to_le16( 2432 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2433 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | 2434 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | 2435 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | 2436 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | 2437 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); 2438 } else { 2439 io_request->EEDPFlags = cpu_to_le16( 2440 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2441 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); 2442 } 2443 io_request->Control |= cpu_to_le32((0x4 << 26)); 2444 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); 2445 } else { 2446 /* Some drives don't support 16/12 byte CDB's, convert to 10 */ 2447 if (((cdb_len == 12) || (cdb_len == 16)) && 2448 (start_blk <= 0xffffffff)) { 2449 if (cdb_len == 16) { 2450 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; 2451 flagvals = cdb[1]; 2452 groupnum = cdb[14]; 2453 control = cdb[15]; 2454 } else { 2455 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; 2456 flagvals = cdb[1]; 2457 groupnum = cdb[10]; 2458 control = cdb[11]; 2459 } 2460 2461 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2462 2463 cdb[0] = opcode; 2464 cdb[1] = flagvals; 2465 cdb[6] = groupnum; 2466 cdb[9] = control; 2467 2468 /* Transfer length */ 2469 cdb[8] = (u8)(num_blocks & 0xff); 2470 cdb[7] = (u8)((num_blocks >> 8) & 0xff); 2471 2472 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ 2473 cdb_len = 10; 2474 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { 2475 /* Convert to 16 byte CDB for large LBA's */ 2476 switch (cdb_len) { 2477 case 6: 2478 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; 2479 control = cdb[5]; 2480 break; 2481 case 10: 2482 opcode = 2483 cdb[0] == READ_10 ? READ_16 : WRITE_16; 2484 flagvals = cdb[1]; 2485 groupnum = cdb[6]; 2486 control = cdb[9]; 2487 break; 2488 case 12: 2489 opcode = 2490 cdb[0] == READ_12 ? READ_16 : WRITE_16; 2491 flagvals = cdb[1]; 2492 groupnum = cdb[10]; 2493 control = cdb[11]; 2494 break; 2495 } 2496 2497 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2498 2499 cdb[0] = opcode; 2500 cdb[1] = flagvals; 2501 cdb[14] = groupnum; 2502 cdb[15] = control; 2503 2504 /* Transfer length */ 2505 cdb[13] = (u8)(num_blocks & 0xff); 2506 cdb[12] = (u8)((num_blocks >> 8) & 0xff); 2507 cdb[11] = (u8)((num_blocks >> 16) & 0xff); 2508 cdb[10] = (u8)((num_blocks >> 24) & 0xff); 2509 2510 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ 2511 cdb_len = 16; 2512 } 2513 2514 /* Normal case, just load LBA here */ 2515 switch (cdb_len) { 2516 case 6: 2517 { 2518 u8 val = cdb[1] & 0xE0; 2519 cdb[3] = (u8)(start_blk & 0xff); 2520 cdb[2] = (u8)((start_blk >> 8) & 0xff); 2521 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); 2522 break; 2523 } 2524 case 10: 2525 cdb[5] = (u8)(start_blk & 0xff); 2526 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2527 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2528 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2529 break; 2530 case 12: 2531 cdb[5] = (u8)(start_blk & 0xff); 2532 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2533 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2534 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2535 break; 2536 case 16: 2537 cdb[9] = (u8)(start_blk & 0xff); 2538 cdb[8] = (u8)((start_blk >> 8) & 0xff); 2539 cdb[7] = (u8)((start_blk >> 16) & 0xff); 2540 cdb[6] = (u8)((start_blk >> 24) & 0xff); 2541 cdb[5] = (u8)((start_blk >> 32) & 0xff); 2542 cdb[4] = (u8)((start_blk >> 40) & 0xff); 2543 cdb[3] = (u8)((start_blk >> 48) & 0xff); 2544 cdb[2] = (u8)((start_blk >> 56) & 0xff); 2545 break; 2546 } 2547 } 2548 } 2549 2550 /** 2551 * megasas_stream_detect - stream detection on read and and write IOs 2552 * @instance: Adapter soft state 2553 * @cmd: Command to be prepared 2554 * @io_info: IO Request info 2555 * 2556 */ 2557 2558 /** stream detection on read and and write IOs */ 2559 static void megasas_stream_detect(struct megasas_instance *instance, 2560 struct megasas_cmd_fusion *cmd, 2561 struct IO_REQUEST_INFO *io_info) 2562 { 2563 struct fusion_context *fusion = instance->ctrl_context; 2564 u32 device_id = io_info->ldTgtId; 2565 struct LD_STREAM_DETECT *current_ld_sd 2566 = fusion->stream_detect_by_ld[device_id]; 2567 u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; 2568 u32 shifted_values, unshifted_values; 2569 u32 index_value_mask, shifted_values_mask; 2570 int i; 2571 bool is_read_ahead = false; 2572 struct STREAM_DETECT *current_sd; 2573 /* find possible stream */ 2574 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { 2575 stream_num = (*track_stream >> 2576 (i * BITS_PER_INDEX_STREAM)) & 2577 STREAM_MASK; 2578 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2579 /* if we found a stream, update the raid 2580 * context and also update the mruBitMap 2581 */ 2582 /* boundary condition */ 2583 if ((current_sd->next_seq_lba) && 2584 (io_info->ldStartBlock >= current_sd->next_seq_lba) && 2585 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && 2586 (current_sd->is_read == io_info->isRead)) { 2587 2588 if ((io_info->ldStartBlock != current_sd->next_seq_lba) && 2589 ((!io_info->isRead) || (!is_read_ahead))) 2590 /* 2591 * Once the API availible we need to change this. 2592 * At this point we are not allowing any gap 2593 */ 2594 continue; 2595 2596 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); 2597 current_sd->next_seq_lba = 2598 io_info->ldStartBlock + io_info->numBlocks; 2599 /* 2600 * update the mruBitMap LRU 2601 */ 2602 shifted_values_mask = 2603 (1 << i * BITS_PER_INDEX_STREAM) - 1; 2604 shifted_values = ((*track_stream & shifted_values_mask) 2605 << BITS_PER_INDEX_STREAM); 2606 index_value_mask = 2607 STREAM_MASK << i * BITS_PER_INDEX_STREAM; 2608 unshifted_values = 2609 *track_stream & ~(shifted_values_mask | 2610 index_value_mask); 2611 *track_stream = 2612 unshifted_values | shifted_values | stream_num; 2613 return; 2614 } 2615 } 2616 /* 2617 * if we did not find any stream, create a new one 2618 * from the least recently used 2619 */ 2620 stream_num = (*track_stream >> 2621 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & 2622 STREAM_MASK; 2623 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2624 current_sd->is_read = io_info->isRead; 2625 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; 2626 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); 2627 return; 2628 } 2629 2630 /** 2631 * megasas_set_raidflag_cpu_affinity - This function sets the cpu 2632 * affinity (cpu of the controller) and raid_flags in the raid context 2633 * based on IO type. 2634 * 2635 * @fusion: Fusion context 2636 * @praid_context: IO RAID context 2637 * @raid: LD raid map 2638 * @fp_possible: Is fast path possible? 2639 * @is_read: Is read IO? 2640 * @scsi_buff_len: SCSI command buffer length 2641 * 2642 */ 2643 static void 2644 megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion, 2645 union RAID_CONTEXT_UNION *praid_context, 2646 struct MR_LD_RAID *raid, bool fp_possible, 2647 u8 is_read, u32 scsi_buff_len) 2648 { 2649 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2650 struct RAID_CONTEXT_G35 *rctx_g35; 2651 2652 rctx_g35 = &praid_context->raid_context_g35; 2653 if (fp_possible) { 2654 if (is_read) { 2655 if ((raid->cpuAffinity.pdRead.cpu0) && 2656 (raid->cpuAffinity.pdRead.cpu1)) 2657 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2658 else if (raid->cpuAffinity.pdRead.cpu1) 2659 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2660 } else { 2661 if ((raid->cpuAffinity.pdWrite.cpu0) && 2662 (raid->cpuAffinity.pdWrite.cpu1)) 2663 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2664 else if (raid->cpuAffinity.pdWrite.cpu1) 2665 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2666 /* Fast path cache by pass capable R0/R1 VD */ 2667 if ((raid->level <= 1) && 2668 (raid->capability.fp_cache_bypass_capable)) { 2669 rctx_g35->routing_flags |= 2670 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); 2671 rctx_g35->raid_flags = 2672 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS 2673 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2674 } 2675 } 2676 } else { 2677 if (is_read) { 2678 if ((raid->cpuAffinity.ldRead.cpu0) && 2679 (raid->cpuAffinity.ldRead.cpu1)) 2680 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2681 else if (raid->cpuAffinity.ldRead.cpu1) 2682 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2683 } else { 2684 if ((raid->cpuAffinity.ldWrite.cpu0) && 2685 (raid->cpuAffinity.ldWrite.cpu1)) 2686 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2687 else if (raid->cpuAffinity.ldWrite.cpu1) 2688 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2689 2690 if (is_stream_detected(rctx_g35) && 2691 ((raid->level == 5) || (raid->level == 6)) && 2692 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && 2693 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) 2694 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2695 } 2696 } 2697 2698 rctx_g35->routing_flags |= 2699 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2700 2701 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2702 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. 2703 * IO Subtype is not bitmap. 2704 */ 2705 if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) && 2706 (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) { 2707 praid_context->raid_context_g35.raid_flags = 2708 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2709 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2710 } 2711 } 2712 2713 /** 2714 * megasas_build_ldio_fusion - Prepares IOs to devices 2715 * @instance: Adapter soft state 2716 * @scp: SCSI command 2717 * @cmd: Command to be prepared 2718 * 2719 * Prepares the io_request and chain elements (sg_frame) for IO 2720 * The IO can be for PD (Fast Path) or LD 2721 */ 2722 static void 2723 megasas_build_ldio_fusion(struct megasas_instance *instance, 2724 struct scsi_cmnd *scp, 2725 struct megasas_cmd_fusion *cmd) 2726 { 2727 bool fp_possible; 2728 u16 ld; 2729 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; 2730 u32 scsi_buff_len; 2731 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2732 struct IO_REQUEST_INFO io_info; 2733 struct fusion_context *fusion; 2734 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2735 u8 *raidLUN; 2736 unsigned long spinlock_flags; 2737 struct MR_LD_RAID *raid = NULL; 2738 struct MR_PRIV_DEVICE *mrdev_priv; 2739 struct RAID_CONTEXT *rctx; 2740 struct RAID_CONTEXT_G35 *rctx_g35; 2741 2742 device_id = MEGASAS_DEV_INDEX(scp); 2743 2744 fusion = instance->ctrl_context; 2745 2746 io_request = cmd->io_request; 2747 rctx = &io_request->RaidContext.raid_context; 2748 rctx_g35 = &io_request->RaidContext.raid_context_g35; 2749 2750 rctx->virtual_disk_tgt_id = cpu_to_le16(device_id); 2751 rctx->status = 0; 2752 rctx->ex_status = 0; 2753 2754 start_lba_lo = 0; 2755 start_lba_hi = 0; 2756 fp_possible = false; 2757 2758 /* 2759 * 6-byte READ(0x08) or WRITE(0x0A) cdb 2760 */ 2761 if (scp->cmd_len == 6) { 2762 datalength = (u32) scp->cmnd[4]; 2763 start_lba_lo = ((u32) scp->cmnd[1] << 16) | 2764 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 2765 2766 start_lba_lo &= 0x1FFFFF; 2767 } 2768 2769 /* 2770 * 10-byte READ(0x28) or WRITE(0x2A) cdb 2771 */ 2772 else if (scp->cmd_len == 10) { 2773 datalength = (u32) scp->cmnd[8] | 2774 ((u32) scp->cmnd[7] << 8); 2775 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2776 ((u32) scp->cmnd[3] << 16) | 2777 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2778 } 2779 2780 /* 2781 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 2782 */ 2783 else if (scp->cmd_len == 12) { 2784 datalength = ((u32) scp->cmnd[6] << 24) | 2785 ((u32) scp->cmnd[7] << 16) | 2786 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2787 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2788 ((u32) scp->cmnd[3] << 16) | 2789 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2790 } 2791 2792 /* 2793 * 16-byte READ(0x88) or WRITE(0x8A) cdb 2794 */ 2795 else if (scp->cmd_len == 16) { 2796 datalength = ((u32) scp->cmnd[10] << 24) | 2797 ((u32) scp->cmnd[11] << 16) | 2798 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 2799 start_lba_lo = ((u32) scp->cmnd[6] << 24) | 2800 ((u32) scp->cmnd[7] << 16) | 2801 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2802 2803 start_lba_hi = ((u32) scp->cmnd[2] << 24) | 2804 ((u32) scp->cmnd[3] << 16) | 2805 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2806 } 2807 2808 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); 2809 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; 2810 io_info.numBlocks = datalength; 2811 io_info.ldTgtId = device_id; 2812 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2813 scsi_buff_len = scsi_bufflen(scp); 2814 io_request->DataLength = cpu_to_le32(scsi_buff_len); 2815 io_info.data_arms = 1; 2816 2817 if (scp->sc_data_direction == DMA_FROM_DEVICE) 2818 io_info.isRead = 1; 2819 2820 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2821 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2822 2823 if (ld < instance->fw_supported_vd_count) 2824 raid = MR_LdRaidGet(ld, local_map_ptr); 2825 2826 if (!raid || (!fusion->fast_path_io)) { 2827 rctx->reg_lock_flags = 0; 2828 fp_possible = false; 2829 } else { 2830 if (MR_BuildRaidContext(instance, &io_info, rctx, 2831 local_map_ptr, &raidLUN)) 2832 fp_possible = (io_info.fpOkForIo > 0) ? true : false; 2833 } 2834 2835 megasas_get_msix_index(instance, scp, cmd, io_info.data_arms); 2836 2837 if (instance->adapter_type >= VENTURA_SERIES) { 2838 /* FP for Optimal raid level 1. 2839 * All large RAID-1 writes (> 32 KiB, both WT and WB modes) 2840 * are built by the driver as LD I/Os. 2841 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os 2842 * (there is never a reason to process these as buffered writes) 2843 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os 2844 * with the SLD bit asserted. 2845 */ 2846 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 2847 mrdev_priv = scp->device->hostdata; 2848 2849 if (atomic_inc_return(&instance->fw_outstanding) > 2850 (instance->host->can_queue)) { 2851 fp_possible = false; 2852 atomic_dec(&instance->fw_outstanding); 2853 } else if (fusion->pcie_bw_limitation && 2854 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || 2855 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) { 2856 fp_possible = false; 2857 atomic_dec(&instance->fw_outstanding); 2858 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2859 atomic_set(&mrdev_priv->r1_ldio_hint, 2860 instance->r1_ldio_hint_default); 2861 } 2862 } 2863 2864 if (!fp_possible || 2865 (io_info.isRead && io_info.ra_capable)) { 2866 spin_lock_irqsave(&instance->stream_lock, 2867 spinlock_flags); 2868 megasas_stream_detect(instance, cmd, &io_info); 2869 spin_unlock_irqrestore(&instance->stream_lock, 2870 spinlock_flags); 2871 /* In ventura if stream detected for a read and it is 2872 * read ahead capable make this IO as LDIO 2873 */ 2874 if (is_stream_detected(rctx_g35)) 2875 fp_possible = false; 2876 } 2877 2878 /* If raid is NULL, set CPU affinity to default CPU0 */ 2879 if (raid) 2880 megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext, 2881 raid, fp_possible, io_info.isRead, 2882 scsi_buff_len); 2883 else 2884 rctx_g35->routing_flags |= 2885 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2886 } 2887 2888 if (fp_possible) { 2889 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, 2890 local_map_ptr, start_lba_lo); 2891 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2892 cmd->request_desc->SCSIIO.RequestFlags = 2893 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO 2894 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2895 if (instance->adapter_type == INVADER_SERIES) { 2896 rctx->type = MPI2_TYPE_CUDA; 2897 rctx->nseg = 0x1; 2898 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2899 rctx->reg_lock_flags |= 2900 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | 2901 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2902 } else if (instance->adapter_type >= VENTURA_SERIES) { 2903 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT); 2904 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2905 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2906 io_request->IoFlags |= 2907 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2908 } 2909 if (fusion->load_balance_info && 2910 (fusion->load_balance_info[device_id].loadBalanceFlag) && 2911 (io_info.isRead)) { 2912 io_info.devHandle = 2913 get_updated_dev_handle(instance, 2914 &fusion->load_balance_info[device_id], 2915 &io_info, local_map_ptr); 2916 megasas_priv(scp)->status |= MEGASAS_LOAD_BALANCE_FLAG; 2917 cmd->pd_r1_lb = io_info.pd_after_lb; 2918 if (instance->adapter_type >= VENTURA_SERIES) 2919 rctx_g35->span_arm = io_info.span_arm; 2920 else 2921 rctx->span_arm = io_info.span_arm; 2922 2923 } else 2924 megasas_priv(scp)->status &= ~MEGASAS_LOAD_BALANCE_FLAG; 2925 2926 if (instance->adapter_type >= VENTURA_SERIES) 2927 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; 2928 else 2929 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2930 2931 if ((raidLUN[0] == 1) && 2932 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { 2933 instance->dev_handle = !(instance->dev_handle); 2934 io_info.devHandle = 2935 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; 2936 } 2937 2938 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; 2939 io_request->DevHandle = io_info.devHandle; 2940 cmd->pd_interface = io_info.pd_interface; 2941 /* populate the LUN field */ 2942 memcpy(io_request->LUN, raidLUN, 8); 2943 } else { 2944 rctx->timeout_value = 2945 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); 2946 cmd->request_desc->SCSIIO.RequestFlags = 2947 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 2948 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2949 if (instance->adapter_type == INVADER_SERIES) { 2950 if (io_info.do_fp_rlbypass || 2951 (rctx->reg_lock_flags == REGION_TYPE_UNUSED)) 2952 cmd->request_desc->SCSIIO.RequestFlags = 2953 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2954 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2955 rctx->type = MPI2_TYPE_CUDA; 2956 rctx->reg_lock_flags |= 2957 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | 2958 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2959 rctx->nseg = 0x1; 2960 } else if (instance->adapter_type >= VENTURA_SERIES) { 2961 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2962 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT); 2963 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2964 } 2965 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2966 io_request->DevHandle = cpu_to_le16(device_id); 2967 2968 } /* Not FP */ 2969 } 2970 2971 /** 2972 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk 2973 * @instance: Adapter soft state 2974 * @scmd: SCSI command 2975 * @cmd: Command to be prepared 2976 * 2977 * Prepares the io_request frame for non-rw io cmds for vd. 2978 */ 2979 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, 2980 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) 2981 { 2982 u32 device_id; 2983 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2984 u16 ld; 2985 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2986 struct fusion_context *fusion = instance->ctrl_context; 2987 u8 span, physArm; 2988 __le16 devHandle; 2989 u32 arRef, pd; 2990 struct MR_LD_RAID *raid; 2991 struct RAID_CONTEXT *pRAID_Context; 2992 u8 fp_possible = 1; 2993 2994 io_request = cmd->io_request; 2995 device_id = MEGASAS_DEV_INDEX(scmd); 2996 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2997 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2998 /* get RAID_Context pointer */ 2999 pRAID_Context = &io_request->RaidContext.raid_context; 3000 /* Check with FW team */ 3001 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3002 pRAID_Context->reg_lock_row_lba = 0; 3003 pRAID_Context->reg_lock_length = 0; 3004 3005 if (fusion->fast_path_io && ( 3006 device_id < instance->fw_supported_vd_count)) { 3007 3008 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 3009 if (ld >= instance->fw_supported_vd_count - 1) 3010 fp_possible = 0; 3011 else { 3012 raid = MR_LdRaidGet(ld, local_map_ptr); 3013 if (!(raid->capability.fpNonRWCapable)) 3014 fp_possible = 0; 3015 } 3016 } else 3017 fp_possible = 0; 3018 3019 if (!fp_possible) { 3020 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 3021 io_request->DevHandle = cpu_to_le16(device_id); 3022 io_request->LUN[1] = scmd->device->lun; 3023 pRAID_Context->timeout_value = 3024 cpu_to_le16(scsi_cmd_to_rq(scmd)->timeout / HZ); 3025 cmd->request_desc->SCSIIO.RequestFlags = 3026 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3027 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3028 } else { 3029 3030 /* set RAID context values */ 3031 pRAID_Context->config_seq_num = raid->seqNum; 3032 if (instance->adapter_type < VENTURA_SERIES) 3033 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; 3034 pRAID_Context->timeout_value = 3035 cpu_to_le16(raid->fpIoTimeoutForLd); 3036 3037 /* get the DevHandle for the PD (since this is 3038 fpNonRWCapable, this is a single disk RAID0) */ 3039 span = physArm = 0; 3040 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); 3041 pd = MR_ArPdGet(arRef, physArm, local_map_ptr); 3042 devHandle = MR_PdDevHandleGet(pd, local_map_ptr); 3043 3044 /* build request descriptor */ 3045 cmd->request_desc->SCSIIO.RequestFlags = 3046 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3047 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3048 cmd->request_desc->SCSIIO.DevHandle = devHandle; 3049 3050 /* populate the LUN field */ 3051 memcpy(io_request->LUN, raid->LUN, 8); 3052 3053 /* build the raidScsiIO structure */ 3054 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3055 io_request->DevHandle = devHandle; 3056 } 3057 } 3058 3059 /** 3060 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd 3061 * @instance: Adapter soft state 3062 * @scmd: SCSI command 3063 * @cmd: Command to be prepared 3064 * @fp_possible: parameter to detect fast path or firmware path io. 3065 * 3066 * Prepares the io_request frame for rw/non-rw io cmds for syspds 3067 */ 3068 static void 3069 megasas_build_syspd_fusion(struct megasas_instance *instance, 3070 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, 3071 bool fp_possible) 3072 { 3073 u32 device_id; 3074 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 3075 u16 pd_index = 0; 3076 u16 os_timeout_value; 3077 u16 timeout_limit; 3078 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 3079 struct RAID_CONTEXT *pRAID_Context; 3080 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 3081 struct MR_PRIV_DEVICE *mr_device_priv_data; 3082 struct fusion_context *fusion = instance->ctrl_context; 3083 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; 3084 3085 device_id = MEGASAS_DEV_INDEX(scmd); 3086 pd_index = MEGASAS_PD_INDEX(scmd); 3087 os_timeout_value = scsi_cmd_to_rq(scmd)->timeout / HZ; 3088 mr_device_priv_data = scmd->device->hostdata; 3089 cmd->pd_interface = mr_device_priv_data->interface_type; 3090 3091 io_request = cmd->io_request; 3092 /* get RAID_Context pointer */ 3093 pRAID_Context = &io_request->RaidContext.raid_context; 3094 pRAID_Context->reg_lock_flags = 0; 3095 pRAID_Context->reg_lock_row_lba = 0; 3096 pRAID_Context->reg_lock_length = 0; 3097 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 3098 io_request->LUN[1] = scmd->device->lun; 3099 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD 3100 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; 3101 3102 /* If FW supports PD sequence number */ 3103 if (instance->support_seqnum_jbod_fp) { 3104 if (instance->use_seqnum_jbod_fp && 3105 instance->pd_list[pd_index].driveType == TYPE_DISK) { 3106 3107 /* More than 256 PD/JBOD support for Ventura */ 3108 if (instance->support_morethan256jbod) 3109 pRAID_Context->virtual_disk_tgt_id = 3110 pd_sync->seq[pd_index].pd_target_id; 3111 else 3112 pRAID_Context->virtual_disk_tgt_id = 3113 cpu_to_le16(device_id + 3114 (MAX_PHYSICAL_DEVICES - 1)); 3115 pRAID_Context->config_seq_num = 3116 pd_sync->seq[pd_index].seqNum; 3117 io_request->DevHandle = 3118 pd_sync->seq[pd_index].devHandle; 3119 if (instance->adapter_type >= VENTURA_SERIES) { 3120 io_request->RaidContext.raid_context_g35.routing_flags |= 3121 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 3122 io_request->RaidContext.raid_context_g35.nseg_type |= 3123 (1 << RAID_CONTEXT_NSEG_SHIFT); 3124 io_request->RaidContext.raid_context_g35.nseg_type |= 3125 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 3126 } else { 3127 pRAID_Context->type = MPI2_TYPE_CUDA; 3128 pRAID_Context->nseg = 0x1; 3129 pRAID_Context->reg_lock_flags |= 3130 (MR_RL_FLAGS_SEQ_NUM_ENABLE | 3131 MR_RL_FLAGS_GRANT_DESTINATION_CUDA); 3132 } 3133 } else { 3134 pRAID_Context->virtual_disk_tgt_id = 3135 cpu_to_le16(device_id + 3136 (MAX_PHYSICAL_DEVICES - 1)); 3137 pRAID_Context->config_seq_num = 0; 3138 io_request->DevHandle = cpu_to_le16(0xFFFF); 3139 } 3140 } else { 3141 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3142 pRAID_Context->config_seq_num = 0; 3143 3144 if (fusion->fast_path_io) { 3145 local_map_ptr = 3146 fusion->ld_drv_map[(instance->map_id & 1)]; 3147 io_request->DevHandle = 3148 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; 3149 } else { 3150 io_request->DevHandle = cpu_to_le16(0xFFFF); 3151 } 3152 } 3153 3154 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; 3155 3156 megasas_get_msix_index(instance, scmd, cmd, 1); 3157 3158 if (!fp_possible) { 3159 /* system pd firmware path */ 3160 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 3161 cmd->request_desc->SCSIIO.RequestFlags = 3162 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3163 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3164 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); 3165 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3166 } else { 3167 if (os_timeout_value) 3168 os_timeout_value++; 3169 3170 /* system pd Fast Path */ 3171 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3172 timeout_limit = (scmd->device->type == TYPE_DISK) ? 3173 255 : 0xFFFF; 3174 pRAID_Context->timeout_value = 3175 cpu_to_le16((os_timeout_value > timeout_limit) ? 3176 timeout_limit : os_timeout_value); 3177 if (instance->adapter_type >= INVADER_SERIES) 3178 io_request->IoFlags |= 3179 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 3180 3181 cmd->request_desc->SCSIIO.RequestFlags = 3182 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3183 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3184 } 3185 } 3186 3187 /** 3188 * megasas_build_io_fusion - Prepares IOs to devices 3189 * @instance: Adapter soft state 3190 * @scp: SCSI command 3191 * @cmd: Command to be prepared 3192 * 3193 * Invokes helper functions to prepare request frames 3194 * and sets flags appropriate for IO/Non-IO cmd 3195 */ 3196 static int 3197 megasas_build_io_fusion(struct megasas_instance *instance, 3198 struct scsi_cmnd *scp, 3199 struct megasas_cmd_fusion *cmd) 3200 { 3201 int sge_count; 3202 u16 pd_index = 0; 3203 u8 drive_type = 0; 3204 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; 3205 struct MR_PRIV_DEVICE *mr_device_priv_data; 3206 mr_device_priv_data = scp->device->hostdata; 3207 3208 /* Zero out some fields so they don't get reused */ 3209 memset(io_request->LUN, 0x0, 8); 3210 io_request->CDB.EEDP32.PrimaryReferenceTag = 0; 3211 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; 3212 io_request->EEDPFlags = 0; 3213 io_request->Control = 0; 3214 io_request->EEDPBlockSize = 0; 3215 io_request->ChainOffset = 0; 3216 io_request->RaidContext.raid_context.raid_flags = 0; 3217 io_request->RaidContext.raid_context.type = 0; 3218 io_request->RaidContext.raid_context.nseg = 0; 3219 3220 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); 3221 /* 3222 * Just the CDB length,rest of the Flags are zero 3223 * This will be modified for FP in build_ldio_fusion 3224 */ 3225 io_request->IoFlags = cpu_to_le16(scp->cmd_len); 3226 3227 switch (megasas_cmd_type(scp)) { 3228 case READ_WRITE_LDIO: 3229 megasas_build_ldio_fusion(instance, scp, cmd); 3230 break; 3231 case NON_READ_WRITE_LDIO: 3232 megasas_build_ld_nonrw_fusion(instance, scp, cmd); 3233 break; 3234 case READ_WRITE_SYSPDIO: 3235 megasas_build_syspd_fusion(instance, scp, cmd, true); 3236 break; 3237 case NON_READ_WRITE_SYSPDIO: 3238 pd_index = MEGASAS_PD_INDEX(scp); 3239 drive_type = instance->pd_list[pd_index].driveType; 3240 if ((instance->secure_jbod_support || 3241 mr_device_priv_data->is_tm_capable) || 3242 (instance->adapter_type >= VENTURA_SERIES && 3243 drive_type == TYPE_ENCLOSURE)) 3244 megasas_build_syspd_fusion(instance, scp, cmd, false); 3245 else 3246 megasas_build_syspd_fusion(instance, scp, cmd, true); 3247 break; 3248 default: 3249 break; 3250 } 3251 3252 /* 3253 * Construct SGL 3254 */ 3255 3256 sge_count = megasas_make_sgl(instance, scp, cmd); 3257 3258 if (sge_count > instance->max_num_sge || (sge_count < 0)) { 3259 dev_err(&instance->pdev->dev, 3260 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", 3261 __func__, __LINE__, sge_count, instance->max_num_sge); 3262 return 1; 3263 } 3264 3265 if (instance->adapter_type >= VENTURA_SERIES) { 3266 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); 3267 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); 3268 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); 3269 } else { 3270 /* numSGE store lower 8 bit of sge_count. 3271 * numSGEExt store higher 8 bit of sge_count 3272 */ 3273 io_request->RaidContext.raid_context.num_sge = sge_count; 3274 io_request->RaidContext.raid_context.num_sge_ext = 3275 (u8)(sge_count >> 8); 3276 } 3277 3278 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); 3279 3280 if (scp->sc_data_direction == DMA_TO_DEVICE) 3281 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); 3282 else if (scp->sc_data_direction == DMA_FROM_DEVICE) 3283 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); 3284 3285 io_request->SGLOffset0 = 3286 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; 3287 3288 io_request->SenseBufferLowAddress = 3289 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 3290 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 3291 3292 cmd->scmd = scp; 3293 megasas_priv(scp)->cmd_priv = cmd; 3294 3295 return 0; 3296 } 3297 3298 static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3299 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) 3300 { 3301 u8 *p; 3302 struct fusion_context *fusion; 3303 3304 fusion = instance->ctrl_context; 3305 p = fusion->req_frames_desc + 3306 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; 3307 3308 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; 3309 } 3310 3311 3312 /* megasas_prepate_secondRaid1_IO 3313 * It prepares the raid 1 second IO 3314 */ 3315 static void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, 3316 struct megasas_cmd_fusion *cmd, 3317 struct megasas_cmd_fusion *r1_cmd) 3318 { 3319 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; 3320 struct fusion_context *fusion; 3321 fusion = instance->ctrl_context; 3322 req_desc = cmd->request_desc; 3323 /* copy the io request frame as well as 8 SGEs data for r1 command*/ 3324 memcpy(r1_cmd->io_request, cmd->io_request, 3325 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); 3326 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL, 3327 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); 3328 /*sense buffer is different for r1 command*/ 3329 r1_cmd->io_request->SenseBufferLowAddress = 3330 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr)); 3331 r1_cmd->scmd = cmd->scmd; 3332 req_desc2 = megasas_get_request_descriptor(instance, 3333 (r1_cmd->index - 1)); 3334 req_desc2->Words = 0; 3335 r1_cmd->request_desc = req_desc2; 3336 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); 3337 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; 3338 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; 3339 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; 3340 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; 3341 cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid = 3342 cpu_to_le16(r1_cmd->index); 3343 r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid = 3344 cpu_to_le16(cmd->index); 3345 /*MSIxIndex of both commands request descriptors should be same*/ 3346 r1_cmd->request_desc->SCSIIO.MSIxIndex = 3347 cmd->request_desc->SCSIIO.MSIxIndex; 3348 /*span arm is different for r1 cmd*/ 3349 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = 3350 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; 3351 } 3352 3353 /** 3354 * megasas_build_and_issue_cmd_fusion -Main routine for building and 3355 * issuing non IOCTL cmd 3356 * @instance: Adapter soft state 3357 * @scmd: pointer to scsi cmd from OS 3358 */ 3359 static u32 3360 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, 3361 struct scsi_cmnd *scmd) 3362 { 3363 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL; 3364 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3365 u32 index; 3366 3367 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && 3368 instance->ldio_threshold && 3369 (atomic_inc_return(&instance->ldio_outstanding) > 3370 instance->ldio_threshold)) { 3371 atomic_dec(&instance->ldio_outstanding); 3372 return SCSI_MLQUEUE_DEVICE_BUSY; 3373 } 3374 3375 if (atomic_inc_return(&instance->fw_outstanding) > 3376 instance->host->can_queue) { 3377 atomic_dec(&instance->fw_outstanding); 3378 return SCSI_MLQUEUE_HOST_BUSY; 3379 } 3380 3381 cmd = megasas_get_cmd_fusion(instance, scsi_cmd_to_rq(scmd)->tag); 3382 3383 if (!cmd) { 3384 atomic_dec(&instance->fw_outstanding); 3385 return SCSI_MLQUEUE_HOST_BUSY; 3386 } 3387 3388 index = cmd->index; 3389 3390 req_desc = megasas_get_request_descriptor(instance, index-1); 3391 3392 req_desc->Words = 0; 3393 cmd->request_desc = req_desc; 3394 3395 if (megasas_build_io_fusion(instance, scmd, cmd)) { 3396 megasas_return_cmd_fusion(instance, cmd); 3397 dev_err(&instance->pdev->dev, "Error building command\n"); 3398 cmd->request_desc = NULL; 3399 atomic_dec(&instance->fw_outstanding); 3400 return SCSI_MLQUEUE_HOST_BUSY; 3401 } 3402 3403 req_desc = cmd->request_desc; 3404 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3405 3406 if (cmd->io_request->ChainOffset != 0 && 3407 cmd->io_request->ChainOffset != 0xF) 3408 dev_err(&instance->pdev->dev, "The chain offset value is not " 3409 "correct : %x\n", cmd->io_request->ChainOffset); 3410 /* 3411 * if it is raid 1/10 fp write capable. 3412 * try to get second command from pool and construct it. 3413 * From FW, it has confirmed that lba values of two PDs 3414 * corresponds to single R1/10 LD are always same 3415 * 3416 */ 3417 /* driver side count always should be less than max_fw_cmds 3418 * to get new command 3419 */ 3420 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 3421 r1_cmd = megasas_get_cmd_fusion(instance, 3422 scsi_cmd_to_rq(scmd)->tag + instance->max_fw_cmds); 3423 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); 3424 } 3425 3426 3427 /* 3428 * Issue the command to the FW 3429 */ 3430 3431 megasas_sdev_busy_inc(instance, scmd); 3432 megasas_fire_cmd_fusion(instance, req_desc); 3433 3434 if (r1_cmd) 3435 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); 3436 3437 3438 return 0; 3439 } 3440 3441 /** 3442 * megasas_complete_r1_command - 3443 * completes R1 FP write commands which has valid peer smid 3444 * @instance: Adapter soft state 3445 * @cmd: MPT command frame 3446 * 3447 */ 3448 static inline void 3449 megasas_complete_r1_command(struct megasas_instance *instance, 3450 struct megasas_cmd_fusion *cmd) 3451 { 3452 u8 *sense, status, ex_status; 3453 u32 data_length; 3454 u16 peer_smid; 3455 struct fusion_context *fusion; 3456 struct megasas_cmd_fusion *r1_cmd = NULL; 3457 struct scsi_cmnd *scmd_local = NULL; 3458 struct RAID_CONTEXT_G35 *rctx_g35; 3459 3460 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; 3461 fusion = instance->ctrl_context; 3462 peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid); 3463 3464 r1_cmd = fusion->cmd_list[peer_smid - 1]; 3465 scmd_local = cmd->scmd; 3466 status = rctx_g35->status; 3467 ex_status = rctx_g35->ex_status; 3468 data_length = cmd->io_request->DataLength; 3469 sense = cmd->sense; 3470 3471 cmd->cmd_completed = true; 3472 3473 /* Check if peer command is completed or not*/ 3474 if (r1_cmd->cmd_completed) { 3475 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; 3476 if (rctx_g35->status != MFI_STAT_OK) { 3477 status = rctx_g35->status; 3478 ex_status = rctx_g35->ex_status; 3479 data_length = r1_cmd->io_request->DataLength; 3480 sense = r1_cmd->sense; 3481 } 3482 3483 megasas_return_cmd_fusion(instance, r1_cmd); 3484 map_cmd_status(fusion, scmd_local, status, ex_status, 3485 le32_to_cpu(data_length), sense); 3486 if (instance->ldio_threshold && 3487 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 3488 atomic_dec(&instance->ldio_outstanding); 3489 megasas_priv(scmd_local)->cmd_priv = NULL; 3490 megasas_return_cmd_fusion(instance, cmd); 3491 scsi_dma_unmap(scmd_local); 3492 megasas_sdev_busy_dec(instance, scmd_local); 3493 scsi_done(scmd_local); 3494 } 3495 } 3496 3497 /** 3498 * access_irq_context: Access to reply processing 3499 * @irq_context: IRQ context 3500 * 3501 * Synchronize access to reply processing. 3502 * 3503 * Return: true on success, false on failure. 3504 */ 3505 static inline 3506 bool access_irq_context(struct megasas_irq_context *irq_context) 3507 { 3508 if (!irq_context) 3509 return true; 3510 3511 if (atomic_add_unless(&irq_context->in_used, 1, 1)) 3512 return true; 3513 3514 return false; 3515 } 3516 3517 /** 3518 * release_irq_context: Release reply processing 3519 * @irq_context: IRQ context 3520 * 3521 * Release access of reply processing. 3522 * 3523 * Return: Nothing. 3524 */ 3525 static inline 3526 void release_irq_context(struct megasas_irq_context *irq_context) 3527 { 3528 if (irq_context) 3529 atomic_dec(&irq_context->in_used); 3530 } 3531 3532 /** 3533 * complete_cmd_fusion - Completes command 3534 * @instance: Adapter soft state 3535 * @MSIxIndex: MSI number 3536 * @irq_context: IRQ context 3537 * 3538 * Completes all commands that is in reply descriptor queue 3539 */ 3540 static int 3541 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, 3542 struct megasas_irq_context *irq_context) 3543 { 3544 union MPI2_REPLY_DESCRIPTORS_UNION *desc; 3545 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; 3546 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 3547 struct fusion_context *fusion; 3548 struct megasas_cmd *cmd_mfi; 3549 struct megasas_cmd_fusion *cmd_fusion; 3550 u16 smid, num_completed; 3551 u8 reply_descript_type, *sense, status, extStatus; 3552 u32 device_id, data_length; 3553 union desc_value d_val; 3554 struct LD_LOAD_BALANCE_INFO *lbinfo; 3555 int threshold_reply_count = 0; 3556 struct scsi_cmnd *scmd_local = NULL; 3557 struct MR_TASK_MANAGE_REQUEST *mr_tm_req; 3558 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; 3559 3560 fusion = instance->ctrl_context; 3561 3562 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3563 return IRQ_HANDLED; 3564 3565 if (!access_irq_context(irq_context)) 3566 return 0; 3567 3568 desc = fusion->reply_frames_desc[MSIxIndex] + 3569 fusion->last_reply_idx[MSIxIndex]; 3570 3571 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3572 3573 d_val.word = desc->Words; 3574 3575 reply_descript_type = reply_desc->ReplyFlags & 3576 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3577 3578 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) { 3579 release_irq_context(irq_context); 3580 return IRQ_NONE; 3581 } 3582 3583 num_completed = 0; 3584 3585 while (d_val.u.low != cpu_to_le32(UINT_MAX) && 3586 d_val.u.high != cpu_to_le32(UINT_MAX)) { 3587 3588 smid = le16_to_cpu(reply_desc->SMID); 3589 cmd_fusion = fusion->cmd_list[smid - 1]; 3590 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 3591 cmd_fusion->io_request; 3592 3593 scmd_local = cmd_fusion->scmd; 3594 status = scsi_io_req->RaidContext.raid_context.status; 3595 extStatus = scsi_io_req->RaidContext.raid_context.ex_status; 3596 sense = cmd_fusion->sense; 3597 data_length = scsi_io_req->DataLength; 3598 3599 switch (scsi_io_req->Function) { 3600 case MPI2_FUNCTION_SCSI_TASK_MGMT: 3601 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) 3602 cmd_fusion->io_request; 3603 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) 3604 &mr_tm_req->TmRequest; 3605 dev_dbg(&instance->pdev->dev, "TM completion:" 3606 "type: 0x%x TaskMID: 0x%x\n", 3607 mpi_tm_req->TaskType, mpi_tm_req->TaskMID); 3608 complete(&cmd_fusion->done); 3609 break; 3610 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ 3611 /* Update load balancing info */ 3612 if (fusion->load_balance_info && 3613 (megasas_priv(cmd_fusion->scmd)->status & 3614 MEGASAS_LOAD_BALANCE_FLAG)) { 3615 device_id = MEGASAS_DEV_INDEX(scmd_local); 3616 lbinfo = &fusion->load_balance_info[device_id]; 3617 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); 3618 megasas_priv(cmd_fusion->scmd)->status &= 3619 ~MEGASAS_LOAD_BALANCE_FLAG; 3620 } 3621 fallthrough; /* and complete IO */ 3622 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ 3623 atomic_dec(&instance->fw_outstanding); 3624 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { 3625 map_cmd_status(fusion, scmd_local, status, 3626 extStatus, le32_to_cpu(data_length), 3627 sense); 3628 if (instance->ldio_threshold && 3629 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) 3630 atomic_dec(&instance->ldio_outstanding); 3631 megasas_priv(scmd_local)->cmd_priv = NULL; 3632 megasas_return_cmd_fusion(instance, cmd_fusion); 3633 scsi_dma_unmap(scmd_local); 3634 megasas_sdev_busy_dec(instance, scmd_local); 3635 scsi_done(scmd_local); 3636 } else /* Optimal VD - R1 FP command completion. */ 3637 megasas_complete_r1_command(instance, cmd_fusion); 3638 break; 3639 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ 3640 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3641 /* Poll mode. Dummy free. 3642 * In case of Interrupt mode, caller has reverse check. 3643 */ 3644 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 3645 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 3646 megasas_return_cmd(instance, cmd_mfi); 3647 } else 3648 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3649 break; 3650 } 3651 3652 fusion->last_reply_idx[MSIxIndex]++; 3653 if (fusion->last_reply_idx[MSIxIndex] >= 3654 fusion->reply_q_depth) 3655 fusion->last_reply_idx[MSIxIndex] = 0; 3656 3657 desc->Words = cpu_to_le64(ULLONG_MAX); 3658 num_completed++; 3659 threshold_reply_count++; 3660 3661 /* Get the next reply descriptor */ 3662 if (!fusion->last_reply_idx[MSIxIndex]) 3663 desc = fusion->reply_frames_desc[MSIxIndex]; 3664 else 3665 desc++; 3666 3667 reply_desc = 3668 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3669 3670 d_val.word = desc->Words; 3671 3672 reply_descript_type = reply_desc->ReplyFlags & 3673 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3674 3675 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3676 break; 3677 /* 3678 * Write to reply post host index register after completing threshold 3679 * number of reply counts and still there are more replies in reply queue 3680 * pending to be completed 3681 */ 3682 if (threshold_reply_count >= instance->threshold_reply_count) { 3683 if (instance->msix_combined) 3684 writel(((MSIxIndex & 0x7) << 24) | 3685 fusion->last_reply_idx[MSIxIndex], 3686 instance->reply_post_host_index_addr[MSIxIndex/8]); 3687 else 3688 writel((MSIxIndex << 24) | 3689 fusion->last_reply_idx[MSIxIndex], 3690 instance->reply_post_host_index_addr[0]); 3691 threshold_reply_count = 0; 3692 if (irq_context) { 3693 if (!irq_context->irq_poll_scheduled) { 3694 irq_context->irq_poll_scheduled = true; 3695 irq_context->irq_line_enable = true; 3696 irq_poll_sched(&irq_context->irqpoll); 3697 } 3698 release_irq_context(irq_context); 3699 return num_completed; 3700 } 3701 } 3702 } 3703 3704 if (num_completed) { 3705 wmb(); 3706 if (instance->msix_combined) 3707 writel(((MSIxIndex & 0x7) << 24) | 3708 fusion->last_reply_idx[MSIxIndex], 3709 instance->reply_post_host_index_addr[MSIxIndex/8]); 3710 else 3711 writel((MSIxIndex << 24) | 3712 fusion->last_reply_idx[MSIxIndex], 3713 instance->reply_post_host_index_addr[0]); 3714 megasas_check_and_restore_queue_depth(instance); 3715 } 3716 3717 release_irq_context(irq_context); 3718 3719 return num_completed; 3720 } 3721 3722 int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) 3723 { 3724 3725 struct megasas_instance *instance; 3726 int num_entries = 0; 3727 struct fusion_context *fusion; 3728 3729 instance = (struct megasas_instance *)shost->hostdata; 3730 3731 fusion = instance->ctrl_context; 3732 3733 queue_num = queue_num + instance->low_latency_index_start; 3734 3735 if (!atomic_add_unless(&fusion->busy_mq_poll[queue_num], 1, 1)) 3736 return 0; 3737 3738 num_entries = complete_cmd_fusion(instance, queue_num, NULL); 3739 atomic_dec(&fusion->busy_mq_poll[queue_num]); 3740 3741 return num_entries; 3742 } 3743 3744 /** 3745 * megasas_enable_irq_poll() - enable irqpoll 3746 * @instance: Adapter soft state 3747 */ 3748 static void megasas_enable_irq_poll(struct megasas_instance *instance) 3749 { 3750 u32 count, i; 3751 struct megasas_irq_context *irq_ctx; 3752 3753 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3754 3755 for (i = 0; i < count; i++) { 3756 irq_ctx = &instance->irq_context[i]; 3757 irq_poll_enable(&irq_ctx->irqpoll); 3758 } 3759 } 3760 3761 /** 3762 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter 3763 * @instance_addr: Adapter soft state address 3764 */ 3765 static void megasas_sync_irqs(unsigned long instance_addr) 3766 { 3767 u32 count, i; 3768 struct megasas_instance *instance = 3769 (struct megasas_instance *)instance_addr; 3770 struct megasas_irq_context *irq_ctx; 3771 3772 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3773 3774 for (i = 0; i < count; i++) { 3775 synchronize_irq(pci_irq_vector(instance->pdev, i)); 3776 irq_ctx = &instance->irq_context[i]; 3777 irq_poll_disable(&irq_ctx->irqpoll); 3778 if (irq_ctx->irq_poll_scheduled) { 3779 irq_ctx->irq_poll_scheduled = false; 3780 enable_irq(irq_ctx->os_irq); 3781 complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3782 } 3783 } 3784 } 3785 3786 /** 3787 * megasas_irqpoll() - process a queue for completed reply descriptors 3788 * @irqpoll: IRQ poll structure associated with queue to poll. 3789 * @budget: Threshold of reply descriptors to process per poll. 3790 * 3791 * Return: The number of entries processed. 3792 */ 3793 3794 int megasas_irqpoll(struct irq_poll *irqpoll, int budget) 3795 { 3796 struct megasas_irq_context *irq_ctx; 3797 struct megasas_instance *instance; 3798 int num_entries; 3799 3800 irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll); 3801 instance = irq_ctx->instance; 3802 3803 if (irq_ctx->irq_line_enable) { 3804 disable_irq_nosync(irq_ctx->os_irq); 3805 irq_ctx->irq_line_enable = false; 3806 } 3807 3808 num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3809 if (num_entries < budget) { 3810 irq_poll_complete(irqpoll); 3811 irq_ctx->irq_poll_scheduled = false; 3812 enable_irq(irq_ctx->os_irq); 3813 complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3814 } 3815 3816 return num_entries; 3817 } 3818 3819 /** 3820 * megasas_complete_cmd_dpc_fusion - Completes command 3821 * @instance_addr: Adapter soft state address 3822 * 3823 * Tasklet to complete cmds 3824 */ 3825 static void 3826 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) 3827 { 3828 struct megasas_instance *instance = 3829 (struct megasas_instance *)instance_addr; 3830 struct megasas_irq_context *irq_ctx = NULL; 3831 u32 count, MSIxIndex; 3832 3833 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3834 3835 /* If we have already declared adapter dead, donot complete cmds */ 3836 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3837 return; 3838 3839 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) { 3840 irq_ctx = &instance->irq_context[MSIxIndex]; 3841 complete_cmd_fusion(instance, MSIxIndex, irq_ctx); 3842 } 3843 } 3844 3845 /** 3846 * megasas_isr_fusion - isr entry point 3847 * @irq: IRQ number 3848 * @devp: IRQ context 3849 */ 3850 static irqreturn_t megasas_isr_fusion(int irq, void *devp) 3851 { 3852 struct megasas_irq_context *irq_context = devp; 3853 struct megasas_instance *instance = irq_context->instance; 3854 u32 mfiStatus; 3855 3856 if (instance->mask_interrupts) 3857 return IRQ_NONE; 3858 3859 if (irq_context->irq_poll_scheduled) 3860 return IRQ_HANDLED; 3861 3862 if (!instance->msix_vectors) { 3863 mfiStatus = instance->instancet->clear_intr(instance); 3864 if (!mfiStatus) 3865 return IRQ_NONE; 3866 } 3867 3868 /* If we are resetting, bail */ 3869 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { 3870 instance->instancet->clear_intr(instance); 3871 return IRQ_HANDLED; 3872 } 3873 3874 return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context) 3875 ? IRQ_HANDLED : IRQ_NONE; 3876 } 3877 3878 /** 3879 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru 3880 * @instance: Adapter soft state 3881 * @mfi_cmd: megasas_cmd pointer 3882 * 3883 */ 3884 static void 3885 build_mpt_mfi_pass_thru(struct megasas_instance *instance, 3886 struct megasas_cmd *mfi_cmd) 3887 { 3888 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; 3889 struct MPI2_RAID_SCSI_IO_REQUEST *io_req; 3890 struct megasas_cmd_fusion *cmd; 3891 struct fusion_context *fusion; 3892 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; 3893 3894 fusion = instance->ctrl_context; 3895 3896 cmd = megasas_get_cmd_fusion(instance, 3897 instance->max_scsi_cmds + mfi_cmd->index); 3898 3899 /* Save the smid. To be used for returning the cmd */ 3900 mfi_cmd->context.smid = cmd->index; 3901 3902 /* 3903 * For cmds where the flag is set, store the flag and check 3904 * on completion. For cmds with this flag, don't call 3905 * megasas_complete_cmd 3906 */ 3907 3908 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) 3909 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; 3910 3911 io_req = cmd->io_request; 3912 3913 if (instance->adapter_type >= INVADER_SERIES) { 3914 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = 3915 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; 3916 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 3917 sgl_ptr_end->Flags = 0; 3918 } 3919 3920 mpi25_ieee_chain = 3921 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; 3922 3923 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; 3924 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, 3925 SGL) / 4; 3926 io_req->ChainOffset = fusion->chain_offset_mfi_pthru; 3927 3928 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); 3929 3930 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 3931 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; 3932 3933 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size); 3934 } 3935 3936 /** 3937 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd 3938 * @instance: Adapter soft state 3939 * @cmd: mfi cmd to build 3940 * 3941 */ 3942 static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3943 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 3944 { 3945 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; 3946 u16 index; 3947 3948 build_mpt_mfi_pass_thru(instance, cmd); 3949 index = cmd->context.smid; 3950 3951 req_desc = megasas_get_request_descriptor(instance, index - 1); 3952 3953 req_desc->Words = 0; 3954 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3955 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3956 3957 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3958 3959 return req_desc; 3960 } 3961 3962 /** 3963 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd 3964 * @instance: Adapter soft state 3965 * @cmd: mfi cmd pointer 3966 * 3967 */ 3968 static void 3969 megasas_issue_dcmd_fusion(struct megasas_instance *instance, 3970 struct megasas_cmd *cmd) 3971 { 3972 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3973 3974 req_desc = build_mpt_cmd(instance, cmd); 3975 3976 megasas_fire_cmd_fusion(instance, req_desc); 3977 return; 3978 } 3979 3980 /** 3981 * megasas_release_fusion - Reverses the FW initialization 3982 * @instance: Adapter soft state 3983 */ 3984 void 3985 megasas_release_fusion(struct megasas_instance *instance) 3986 { 3987 megasas_free_ioc_init_cmd(instance); 3988 megasas_free_cmds(instance); 3989 megasas_free_cmds_fusion(instance); 3990 3991 iounmap(instance->reg_set); 3992 3993 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 3994 } 3995 3996 /** 3997 * megasas_read_fw_status_reg_fusion - returns the current FW status value 3998 * @instance: Adapter soft state 3999 */ 4000 static u32 4001 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance) 4002 { 4003 return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0); 4004 } 4005 4006 /** 4007 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware 4008 * @instance: Controller's soft instance 4009 * @return: Number of allocated host crash buffers 4010 */ 4011 static void 4012 megasas_alloc_host_crash_buffer(struct megasas_instance *instance) 4013 { 4014 unsigned int i; 4015 4016 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { 4017 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); 4018 if (!instance->crash_buf[i]) { 4019 dev_info(&instance->pdev->dev, "Firmware crash dump " 4020 "memory allocation failed at index %d\n", i); 4021 break; 4022 } 4023 } 4024 instance->drv_buf_alloc = i; 4025 } 4026 4027 /** 4028 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware 4029 * @instance: Controller's soft instance 4030 */ 4031 void 4032 megasas_free_host_crash_buffer(struct megasas_instance *instance) 4033 { 4034 unsigned int i; 4035 for (i = 0; i < instance->drv_buf_alloc; i++) { 4036 vfree(instance->crash_buf[i]); 4037 } 4038 instance->drv_buf_index = 0; 4039 instance->drv_buf_alloc = 0; 4040 instance->fw_crash_state = UNAVAILABLE; 4041 instance->fw_crash_buffer_size = 0; 4042 } 4043 4044 /** 4045 * megasas_adp_reset_fusion - For controller reset 4046 * @instance: Controller's soft instance 4047 * @regs: MFI register set 4048 */ 4049 static int 4050 megasas_adp_reset_fusion(struct megasas_instance *instance, 4051 struct megasas_register_set __iomem *regs) 4052 { 4053 u32 host_diag, abs_state, retry; 4054 4055 /* Now try to reset the chip */ 4056 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4057 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4058 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4059 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4060 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4061 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4062 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4063 4064 /* Check that the diag write enable (DRWE) bit is on */ 4065 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag); 4066 retry = 0; 4067 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { 4068 msleep(100); 4069 host_diag = megasas_readl(instance, 4070 &instance->reg_set->fusion_host_diag); 4071 if (retry++ == 100) { 4072 dev_warn(&instance->pdev->dev, 4073 "Host diag unlock failed from %s %d\n", 4074 __func__, __LINE__); 4075 break; 4076 } 4077 } 4078 if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) 4079 return -1; 4080 4081 /* Send chip reset command */ 4082 writel(host_diag | HOST_DIAG_RESET_ADAPTER, 4083 &instance->reg_set->fusion_host_diag); 4084 msleep(3000); 4085 4086 /* Make sure reset adapter bit is cleared */ 4087 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag); 4088 retry = 0; 4089 while (host_diag & HOST_DIAG_RESET_ADAPTER) { 4090 msleep(100); 4091 host_diag = megasas_readl(instance, 4092 &instance->reg_set->fusion_host_diag); 4093 if (retry++ == 1000) { 4094 dev_warn(&instance->pdev->dev, 4095 "Diag reset adapter never cleared %s %d\n", 4096 __func__, __LINE__); 4097 break; 4098 } 4099 } 4100 if (host_diag & HOST_DIAG_RESET_ADAPTER) 4101 return -1; 4102 4103 abs_state = instance->instancet->read_fw_status_reg(instance) 4104 & MFI_STATE_MASK; 4105 retry = 0; 4106 4107 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { 4108 msleep(100); 4109 abs_state = instance->instancet-> 4110 read_fw_status_reg(instance) & MFI_STATE_MASK; 4111 } 4112 if (abs_state <= MFI_STATE_FW_INIT) { 4113 dev_warn(&instance->pdev->dev, 4114 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", 4115 abs_state, __func__, __LINE__); 4116 return -1; 4117 } 4118 4119 return 0; 4120 } 4121 4122 /** 4123 * megasas_check_reset_fusion - For controller reset check 4124 * @instance: Controller's soft instance 4125 * @regs: MFI register set 4126 */ 4127 static int 4128 megasas_check_reset_fusion(struct megasas_instance *instance, 4129 struct megasas_register_set __iomem *regs) 4130 { 4131 return 0; 4132 } 4133 4134 /** 4135 * megasas_trigger_snap_dump - Trigger snap dump in FW 4136 * @instance: Soft instance of adapter 4137 */ 4138 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance) 4139 { 4140 int j; 4141 u32 fw_state, abs_state; 4142 4143 if (!instance->disableOnlineCtrlReset) { 4144 dev_info(&instance->pdev->dev, "Trigger snap dump\n"); 4145 writel(MFI_ADP_TRIGGER_SNAP_DUMP, 4146 &instance->reg_set->doorbell); 4147 readl(&instance->reg_set->doorbell); 4148 } 4149 4150 for (j = 0; j < instance->snapdump_wait_time; j++) { 4151 abs_state = instance->instancet->read_fw_status_reg(instance); 4152 fw_state = abs_state & MFI_STATE_MASK; 4153 if (fw_state == MFI_STATE_FAULT) { 4154 dev_printk(KERN_ERR, &instance->pdev->dev, 4155 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n", 4156 abs_state & MFI_STATE_FAULT_CODE, 4157 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4158 return; 4159 } 4160 msleep(1000); 4161 } 4162 } 4163 4164 /* This function waits for outstanding commands on fusion to complete */ 4165 static int 4166 megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, 4167 int reason, int *convert) 4168 { 4169 int i, outstanding, retval = 0, hb_seconds_missed = 0; 4170 u32 fw_state, abs_state; 4171 u32 waittime_for_io_completion; 4172 4173 waittime_for_io_completion = 4174 min_t(u32, resetwaittime, 4175 (resetwaittime - instance->snapdump_wait_time)); 4176 4177 if (reason == MFI_IO_TIMEOUT_OCR) { 4178 dev_info(&instance->pdev->dev, 4179 "MFI command is timed out\n"); 4180 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4181 if (instance->snapdump_wait_time) 4182 megasas_trigger_snap_dump(instance); 4183 retval = 1; 4184 goto out; 4185 } 4186 4187 for (i = 0; i < waittime_for_io_completion; i++) { 4188 /* Check if firmware is in fault state */ 4189 abs_state = instance->instancet->read_fw_status_reg(instance); 4190 fw_state = abs_state & MFI_STATE_MASK; 4191 if (fw_state == MFI_STATE_FAULT) { 4192 dev_printk(KERN_ERR, &instance->pdev->dev, 4193 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n", 4194 abs_state & MFI_STATE_FAULT_CODE, 4195 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4196 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4197 if (instance->requestorId && reason) { 4198 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" 4199 " state while polling during" 4200 " I/O timeout handling for %d\n", 4201 instance->host->host_no); 4202 *convert = 1; 4203 } 4204 4205 retval = 1; 4206 goto out; 4207 } 4208 4209 4210 /* If SR-IOV VF mode & heartbeat timeout, don't wait */ 4211 if (instance->requestorId && !reason) { 4212 retval = 1; 4213 goto out; 4214 } 4215 4216 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ 4217 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) { 4218 if (instance->hb_host_mem->HB.fwCounter != 4219 instance->hb_host_mem->HB.driverCounter) { 4220 instance->hb_host_mem->HB.driverCounter = 4221 instance->hb_host_mem->HB.fwCounter; 4222 hb_seconds_missed = 0; 4223 } else { 4224 hb_seconds_missed++; 4225 if (hb_seconds_missed == 4226 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { 4227 dev_warn(&instance->pdev->dev, "SR-IOV:" 4228 " Heartbeat never completed " 4229 " while polling during I/O " 4230 " timeout handling for " 4231 "scsi%d.\n", 4232 instance->host->host_no); 4233 *convert = 1; 4234 retval = 1; 4235 goto out; 4236 } 4237 } 4238 } 4239 4240 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4241 outstanding = atomic_read(&instance->fw_outstanding); 4242 if (!outstanding) 4243 goto out; 4244 4245 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 4246 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 4247 "commands to complete for scsi%d\n", i, 4248 outstanding, instance->host->host_no); 4249 } 4250 msleep(1000); 4251 } 4252 4253 if (instance->snapdump_wait_time) { 4254 megasas_trigger_snap_dump(instance); 4255 retval = 1; 4256 goto out; 4257 } 4258 4259 if (atomic_read(&instance->fw_outstanding)) { 4260 dev_err(&instance->pdev->dev, "pending commands remain after waiting, " 4261 "will reset adapter scsi%d.\n", 4262 instance->host->host_no); 4263 *convert = 1; 4264 retval = 1; 4265 } 4266 4267 out: 4268 return retval; 4269 } 4270 4271 void megasas_reset_reply_desc(struct megasas_instance *instance) 4272 { 4273 int i, j, count; 4274 struct fusion_context *fusion; 4275 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 4276 4277 fusion = instance->ctrl_context; 4278 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 4279 count += instance->iopoll_q_count; 4280 4281 for (i = 0 ; i < count ; i++) { 4282 fusion->last_reply_idx[i] = 0; 4283 reply_desc = fusion->reply_frames_desc[i]; 4284 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) 4285 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 4286 } 4287 } 4288 4289 /* 4290 * megasas_refire_mgmt_cmd : Re-fire management commands 4291 * @instance: Controller's soft instance 4292 */ 4293 static void megasas_refire_mgmt_cmd(struct megasas_instance *instance, 4294 bool return_ioctl) 4295 { 4296 int j; 4297 struct megasas_cmd_fusion *cmd_fusion; 4298 struct fusion_context *fusion; 4299 struct megasas_cmd *cmd_mfi; 4300 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4301 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 4302 u16 smid; 4303 bool refire_cmd = false; 4304 u8 result; 4305 u32 opcode = 0; 4306 4307 fusion = instance->ctrl_context; 4308 4309 /* Re-fire management commands. 4310 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. 4311 */ 4312 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { 4313 cmd_fusion = fusion->cmd_list[j]; 4314 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 4315 smid = le16_to_cpu(cmd_mfi->context.smid); 4316 result = REFIRE_CMD; 4317 4318 if (!smid) 4319 continue; 4320 4321 req_desc = megasas_get_request_descriptor(instance, smid - 1); 4322 4323 switch (cmd_mfi->frame->hdr.cmd) { 4324 case MFI_CMD_DCMD: 4325 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode); 4326 /* Do not refire shutdown command */ 4327 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 4328 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; 4329 result = COMPLETE_CMD; 4330 break; 4331 } 4332 4333 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) && 4334 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 4335 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); 4336 4337 if (!refire_cmd) 4338 result = RETURN_CMD; 4339 4340 break; 4341 case MFI_CMD_NVME: 4342 if (!instance->support_nvme_passthru) { 4343 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 4344 result = COMPLETE_CMD; 4345 } 4346 4347 break; 4348 case MFI_CMD_TOOLBOX: 4349 if (!instance->support_pci_lane_margining) { 4350 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 4351 result = COMPLETE_CMD; 4352 } 4353 4354 break; 4355 default: 4356 break; 4357 } 4358 4359 if (return_ioctl && cmd_mfi->sync_cmd && 4360 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) { 4361 dev_err(&instance->pdev->dev, 4362 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x\n", 4363 __func__, __LINE__, cmd_mfi->frame->hdr.cmd, 4364 le32_to_cpu(cmd_mfi->frame->dcmd.opcode)); 4365 cmd_mfi->cmd_status_drv = DCMD_BUSY; 4366 result = COMPLETE_CMD; 4367 } 4368 4369 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 4370 cmd_fusion->io_request; 4371 if (scsi_io_req->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) 4372 result = RETURN_CMD; 4373 4374 switch (result) { 4375 case REFIRE_CMD: 4376 megasas_fire_cmd_fusion(instance, req_desc); 4377 break; 4378 case RETURN_CMD: 4379 megasas_return_cmd(instance, cmd_mfi); 4380 break; 4381 case COMPLETE_CMD: 4382 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 4383 break; 4384 } 4385 } 4386 } 4387 4388 /* 4389 * megasas_return_polled_cmds: Return polled mode commands back to the pool 4390 * before initiating an OCR. 4391 * @instance: Controller's soft instance 4392 */ 4393 static void 4394 megasas_return_polled_cmds(struct megasas_instance *instance) 4395 { 4396 int i; 4397 struct megasas_cmd_fusion *cmd_fusion; 4398 struct fusion_context *fusion; 4399 struct megasas_cmd *cmd_mfi; 4400 4401 fusion = instance->ctrl_context; 4402 4403 for (i = instance->max_scsi_cmds; i < instance->max_fw_cmds; i++) { 4404 cmd_fusion = fusion->cmd_list[i]; 4405 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 4406 4407 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 4408 if (megasas_dbg_lvl & OCR_DEBUG) 4409 dev_info(&instance->pdev->dev, 4410 "%s %d return cmd 0x%x opcode 0x%x\n", 4411 __func__, __LINE__, cmd_mfi->frame->hdr.cmd, 4412 le32_to_cpu(cmd_mfi->frame->dcmd.opcode)); 4413 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 4414 megasas_return_cmd(instance, cmd_mfi); 4415 } 4416 } 4417 } 4418 4419 /* 4420 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device 4421 * @instance: per adapter struct 4422 * @channel: the channel assigned by the OS 4423 * @id: the id assigned by the OS 4424 * 4425 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED 4426 */ 4427 4428 static int megasas_track_scsiio(struct megasas_instance *instance, 4429 int id, int channel) 4430 { 4431 int i, found = 0; 4432 struct megasas_cmd_fusion *cmd_fusion; 4433 struct fusion_context *fusion; 4434 fusion = instance->ctrl_context; 4435 4436 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4437 cmd_fusion = fusion->cmd_list[i]; 4438 if (cmd_fusion->scmd && 4439 (cmd_fusion->scmd->device->id == id && 4440 cmd_fusion->scmd->device->channel == channel)) { 4441 dev_info(&instance->pdev->dev, 4442 "SCSI commands pending to target" 4443 "channel %d id %d \tSMID: 0x%x\n", 4444 channel, id, cmd_fusion->index); 4445 scsi_print_command(cmd_fusion->scmd); 4446 found = 1; 4447 break; 4448 } 4449 } 4450 4451 return found ? FAILED : SUCCESS; 4452 } 4453 4454 /** 4455 * megasas_tm_response_code - translation of device response code 4456 * @instance: Controller's soft instance 4457 * @mpi_reply: MPI reply returned by firmware 4458 * 4459 * Return nothing. 4460 */ 4461 static void 4462 megasas_tm_response_code(struct megasas_instance *instance, 4463 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) 4464 { 4465 char *desc; 4466 4467 switch (mpi_reply->ResponseCode) { 4468 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: 4469 desc = "task management request completed"; 4470 break; 4471 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: 4472 desc = "invalid frame"; 4473 break; 4474 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: 4475 desc = "task management request not supported"; 4476 break; 4477 case MPI2_SCSITASKMGMT_RSP_TM_FAILED: 4478 desc = "task management request failed"; 4479 break; 4480 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: 4481 desc = "task management request succeeded"; 4482 break; 4483 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: 4484 desc = "invalid lun"; 4485 break; 4486 case 0xA: 4487 desc = "overlapped tag attempted"; 4488 break; 4489 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: 4490 desc = "task queued, however not sent to target"; 4491 break; 4492 default: 4493 desc = "unknown"; 4494 break; 4495 } 4496 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", 4497 mpi_reply->ResponseCode, desc); 4498 dev_dbg(&instance->pdev->dev, 4499 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" 4500 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", 4501 mpi_reply->TerminationCount, mpi_reply->DevHandle, 4502 mpi_reply->Function, mpi_reply->TaskType, 4503 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); 4504 } 4505 4506 /** 4507 * megasas_issue_tm - main routine for sending tm requests 4508 * @instance: per adapter struct 4509 * @device_handle: device handle 4510 * @channel: the channel assigned by the OS 4511 * @id: the id assigned by the OS 4512 * @smid_task: smid assigned to the task 4513 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) 4514 * @mr_device_priv_data: private data 4515 * Context: user 4516 * 4517 * MegaRaid use MPT interface for Task Magement request. 4518 * A generic API for sending task management requests to firmware. 4519 * 4520 * Return SUCCESS or FAILED. 4521 */ 4522 static int 4523 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, 4524 uint channel, uint id, u16 smid_task, u8 type, 4525 struct MR_PRIV_DEVICE *mr_device_priv_data) 4526 { 4527 struct MR_TASK_MANAGE_REQUEST *mr_request; 4528 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; 4529 unsigned long timeleft; 4530 struct megasas_cmd_fusion *cmd_fusion; 4531 struct megasas_cmd *cmd_mfi; 4532 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4533 struct fusion_context *fusion = NULL; 4534 struct megasas_cmd_fusion *scsi_lookup; 4535 int rc; 4536 int timeout = MEGASAS_DEFAULT_TM_TIMEOUT; 4537 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; 4538 4539 fusion = instance->ctrl_context; 4540 4541 cmd_mfi = megasas_get_cmd(instance); 4542 4543 if (!cmd_mfi) { 4544 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4545 __func__, __LINE__); 4546 return -ENOMEM; 4547 } 4548 4549 cmd_fusion = megasas_get_cmd_fusion(instance, 4550 instance->max_scsi_cmds + cmd_mfi->index); 4551 4552 /* Save the smid. To be used for returning the cmd */ 4553 cmd_mfi->context.smid = cmd_fusion->index; 4554 4555 req_desc = megasas_get_request_descriptor(instance, 4556 (cmd_fusion->index - 1)); 4557 4558 cmd_fusion->request_desc = req_desc; 4559 req_desc->Words = 0; 4560 4561 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; 4562 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); 4563 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; 4564 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 4565 mpi_request->DevHandle = cpu_to_le16(device_handle); 4566 mpi_request->TaskType = type; 4567 mpi_request->TaskMID = cpu_to_le16(smid_task); 4568 mpi_request->LUN[1] = 0; 4569 4570 4571 req_desc = cmd_fusion->request_desc; 4572 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); 4573 req_desc->HighPriority.RequestFlags = 4574 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << 4575 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 4576 req_desc->HighPriority.MSIxIndex = 0; 4577 req_desc->HighPriority.LMID = 0; 4578 req_desc->HighPriority.Reserved1 = 0; 4579 4580 if (channel < MEGASAS_MAX_PD_CHANNELS) 4581 mr_request->tmReqFlags.isTMForPD = 1; 4582 else 4583 mr_request->tmReqFlags.isTMForLD = 1; 4584 4585 init_completion(&cmd_fusion->done); 4586 megasas_fire_cmd_fusion(instance, req_desc); 4587 4588 switch (type) { 4589 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4590 timeout = mr_device_priv_data->task_abort_tmo; 4591 break; 4592 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4593 timeout = mr_device_priv_data->target_reset_tmo; 4594 break; 4595 } 4596 4597 timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ); 4598 4599 if (!timeleft) { 4600 dev_err(&instance->pdev->dev, 4601 "task mgmt type 0x%x timed out\n", type); 4602 mutex_unlock(&instance->reset_mutex); 4603 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); 4604 mutex_lock(&instance->reset_mutex); 4605 return rc; 4606 } 4607 4608 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; 4609 megasas_tm_response_code(instance, mpi_reply); 4610 4611 megasas_return_cmd(instance, cmd_mfi); 4612 rc = SUCCESS; 4613 switch (type) { 4614 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4615 scsi_lookup = fusion->cmd_list[smid_task - 1]; 4616 4617 if (scsi_lookup->scmd == NULL) 4618 break; 4619 else { 4620 instance->instancet->disable_intr(instance); 4621 megasas_sync_irqs((unsigned long)instance); 4622 instance->instancet->enable_intr(instance); 4623 megasas_enable_irq_poll(instance); 4624 if (scsi_lookup->scmd == NULL) 4625 break; 4626 } 4627 rc = FAILED; 4628 break; 4629 4630 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4631 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) 4632 break; 4633 instance->instancet->disable_intr(instance); 4634 megasas_sync_irqs((unsigned long)instance); 4635 rc = megasas_track_scsiio(instance, id, channel); 4636 instance->instancet->enable_intr(instance); 4637 megasas_enable_irq_poll(instance); 4638 4639 break; 4640 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: 4641 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: 4642 break; 4643 default: 4644 rc = FAILED; 4645 break; 4646 } 4647 4648 return rc; 4649 4650 } 4651 4652 /* 4653 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI 4654 * @instance: per adapter struct 4655 * 4656 * Return Non Zero index, if SMID found in outstanding commands 4657 */ 4658 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) 4659 { 4660 int i, ret = 0; 4661 struct megasas_instance *instance; 4662 struct megasas_cmd_fusion *cmd_fusion; 4663 struct fusion_context *fusion; 4664 4665 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4666 4667 fusion = instance->ctrl_context; 4668 4669 for (i = 0; i < instance->max_scsi_cmds; i++) { 4670 cmd_fusion = fusion->cmd_list[i]; 4671 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { 4672 scmd_printk(KERN_NOTICE, scmd, "Abort request is for" 4673 " SMID: %d\n", cmd_fusion->index); 4674 ret = cmd_fusion->index; 4675 break; 4676 } 4677 } 4678 4679 return ret; 4680 } 4681 4682 /* 4683 * megasas_get_tm_devhandle - Get devhandle for TM request 4684 * @sdev- OS provided scsi device 4685 * 4686 * Returns- devhandle/targetID of SCSI device 4687 */ 4688 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) 4689 { 4690 u16 pd_index = 0; 4691 u32 device_id; 4692 struct megasas_instance *instance; 4693 struct fusion_context *fusion; 4694 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 4695 u16 devhandle = (u16)ULONG_MAX; 4696 4697 instance = (struct megasas_instance *)sdev->host->hostdata; 4698 fusion = instance->ctrl_context; 4699 4700 if (!MEGASAS_IS_LOGICAL(sdev)) { 4701 if (instance->use_seqnum_jbod_fp) { 4702 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) 4703 + sdev->id; 4704 pd_sync = (void *)fusion->pd_seq_sync 4705 [(instance->pd_seq_map_id - 1) & 1]; 4706 devhandle = pd_sync->seq[pd_index].devHandle; 4707 } else 4708 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" 4709 " without JBOD MAP support from %s %d\n", __func__, __LINE__); 4710 } else { 4711 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 4712 + sdev->id; 4713 devhandle = device_id; 4714 } 4715 4716 return devhandle; 4717 } 4718 4719 /* 4720 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters 4721 * @scmd : pointer to scsi command object 4722 * 4723 * Return SUCCESS, if command aborted else FAILED 4724 */ 4725 4726 int megasas_task_abort_fusion(struct scsi_cmnd *scmd) 4727 { 4728 struct megasas_instance *instance; 4729 u16 smid, devhandle; 4730 int ret; 4731 struct MR_PRIV_DEVICE *mr_device_priv_data; 4732 mr_device_priv_data = scmd->device->hostdata; 4733 4734 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4735 4736 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4737 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4738 "SCSI host:%d\n", instance->host->host_no); 4739 ret = FAILED; 4740 return ret; 4741 } 4742 4743 if (!mr_device_priv_data) { 4744 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4745 "scmd(%p)\n", scmd); 4746 scmd->result = DID_NO_CONNECT << 16; 4747 ret = SUCCESS; 4748 goto out; 4749 } 4750 4751 if (!mr_device_priv_data->is_tm_capable) { 4752 ret = FAILED; 4753 goto out; 4754 } 4755 4756 mutex_lock(&instance->reset_mutex); 4757 4758 smid = megasas_fusion_smid_lookup(scmd); 4759 4760 if (!smid) { 4761 ret = SUCCESS; 4762 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" 4763 " issued is not found in outstanding commands\n"); 4764 mutex_unlock(&instance->reset_mutex); 4765 goto out; 4766 } 4767 4768 devhandle = megasas_get_tm_devhandle(scmd->device); 4769 4770 if (devhandle == (u16)ULONG_MAX) { 4771 ret = SUCCESS; 4772 sdev_printk(KERN_INFO, scmd->device, 4773 "task abort issued for invalid devhandle\n"); 4774 mutex_unlock(&instance->reset_mutex); 4775 goto out; 4776 } 4777 sdev_printk(KERN_INFO, scmd->device, 4778 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n", 4779 scmd, devhandle); 4780 4781 mr_device_priv_data->tm_busy = true; 4782 ret = megasas_issue_tm(instance, devhandle, 4783 scmd->device->channel, scmd->device->id, smid, 4784 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, 4785 mr_device_priv_data); 4786 mr_device_priv_data->tm_busy = false; 4787 4788 mutex_unlock(&instance->reset_mutex); 4789 scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n", 4790 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 4791 out: 4792 scsi_print_command(scmd); 4793 if (megasas_dbg_lvl & TM_DEBUG) 4794 megasas_dump_fusion_io(scmd); 4795 4796 return ret; 4797 } 4798 4799 /* 4800 * megasas_reset_target_fusion : target reset function for fusion adapters 4801 * scmd: SCSI command pointer 4802 * 4803 * Returns SUCCESS if all commands associated with target aborted else FAILED 4804 */ 4805 4806 int megasas_reset_target_fusion(struct scsi_cmnd *scmd) 4807 { 4808 4809 struct megasas_instance *instance; 4810 int ret = FAILED; 4811 u16 devhandle; 4812 struct MR_PRIV_DEVICE *mr_device_priv_data; 4813 mr_device_priv_data = scmd->device->hostdata; 4814 4815 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4816 4817 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4818 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4819 "SCSI host:%d\n", instance->host->host_no); 4820 ret = FAILED; 4821 return ret; 4822 } 4823 4824 if (!mr_device_priv_data) { 4825 sdev_printk(KERN_INFO, scmd->device, 4826 "device been deleted! scmd: (0x%p)\n", scmd); 4827 scmd->result = DID_NO_CONNECT << 16; 4828 ret = SUCCESS; 4829 goto out; 4830 } 4831 4832 if (!mr_device_priv_data->is_tm_capable) { 4833 ret = FAILED; 4834 goto out; 4835 } 4836 4837 mutex_lock(&instance->reset_mutex); 4838 devhandle = megasas_get_tm_devhandle(scmd->device); 4839 4840 if (devhandle == (u16)ULONG_MAX) { 4841 ret = SUCCESS; 4842 sdev_printk(KERN_INFO, scmd->device, 4843 "target reset issued for invalid devhandle\n"); 4844 mutex_unlock(&instance->reset_mutex); 4845 goto out; 4846 } 4847 4848 sdev_printk(KERN_INFO, scmd->device, 4849 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n", 4850 scmd, devhandle); 4851 mr_device_priv_data->tm_busy = true; 4852 ret = megasas_issue_tm(instance, devhandle, 4853 scmd->device->channel, scmd->device->id, 0, 4854 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 4855 mr_device_priv_data); 4856 mr_device_priv_data->tm_busy = false; 4857 mutex_unlock(&instance->reset_mutex); 4858 scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n", 4859 (ret == SUCCESS) ? "SUCCESS" : "FAILED"); 4860 4861 out: 4862 return ret; 4863 } 4864 4865 /*SRIOV get other instance in cluster if any*/ 4866 static struct 4867 megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) 4868 { 4869 int i; 4870 4871 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { 4872 if (megasas_mgmt_info.instance[i] && 4873 (megasas_mgmt_info.instance[i] != instance) && 4874 megasas_mgmt_info.instance[i]->requestorId && 4875 megasas_mgmt_info.instance[i]->peerIsPresent && 4876 (memcmp((megasas_mgmt_info.instance[i]->clusterId), 4877 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) 4878 return megasas_mgmt_info.instance[i]; 4879 } 4880 return NULL; 4881 } 4882 4883 /* Check for a second path that is currently UP */ 4884 int megasas_check_mpio_paths(struct megasas_instance *instance, 4885 struct scsi_cmnd *scmd) 4886 { 4887 struct megasas_instance *peer_instance = NULL; 4888 int retval = (DID_REQUEUE << 16); 4889 4890 if (instance->peerIsPresent) { 4891 peer_instance = megasas_get_peer_instance(instance); 4892 if ((peer_instance) && 4893 (atomic_read(&peer_instance->adprecovery) == 4894 MEGASAS_HBA_OPERATIONAL)) 4895 retval = (DID_NO_CONNECT << 16); 4896 } 4897 return retval; 4898 } 4899 4900 /* Core fusion reset function */ 4901 int megasas_reset_fusion(struct Scsi_Host *shost, int reason) 4902 { 4903 int retval = SUCCESS, i, j, convert = 0; 4904 struct megasas_instance *instance; 4905 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; 4906 struct fusion_context *fusion; 4907 u32 abs_state, status_reg, reset_adapter, fpio_count = 0; 4908 u32 io_timeout_in_crash_mode = 0; 4909 struct scsi_cmnd *scmd_local = NULL; 4910 struct scsi_device *sdev; 4911 int ret_target_prop = DCMD_FAILED; 4912 bool is_target_prop = false; 4913 bool do_adp_reset = true; 4914 int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES; 4915 4916 instance = (struct megasas_instance *)shost->hostdata; 4917 fusion = instance->ctrl_context; 4918 4919 mutex_lock(&instance->reset_mutex); 4920 4921 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 4922 dev_warn(&instance->pdev->dev, "Hardware critical error, " 4923 "returning FAILED for scsi%d.\n", 4924 instance->host->host_no); 4925 mutex_unlock(&instance->reset_mutex); 4926 return FAILED; 4927 } 4928 status_reg = instance->instancet->read_fw_status_reg(instance); 4929 abs_state = status_reg & MFI_STATE_MASK; 4930 4931 /* IO timeout detected, forcibly put FW in FAULT state */ 4932 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && 4933 instance->crash_dump_app_support && reason) { 4934 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " 4935 "forcibly FAULT Firmware\n"); 4936 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4937 status_reg = megasas_readl(instance, &instance->reg_set->doorbell); 4938 writel(status_reg | MFI_STATE_FORCE_OCR, 4939 &instance->reg_set->doorbell); 4940 readl(&instance->reg_set->doorbell); 4941 mutex_unlock(&instance->reset_mutex); 4942 do { 4943 ssleep(3); 4944 io_timeout_in_crash_mode++; 4945 dev_dbg(&instance->pdev->dev, "waiting for [%d] " 4946 "seconds for crash dump collection and OCR " 4947 "to be done\n", (io_timeout_in_crash_mode * 3)); 4948 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 4949 (io_timeout_in_crash_mode < 80)); 4950 4951 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 4952 dev_info(&instance->pdev->dev, "OCR done for IO " 4953 "timeout case\n"); 4954 retval = SUCCESS; 4955 } else { 4956 dev_info(&instance->pdev->dev, "Controller is not " 4957 "operational after 240 seconds wait for IO " 4958 "timeout case in FW crash dump mode\n do " 4959 "OCR/kill adapter\n"); 4960 retval = megasas_reset_fusion(shost, 0); 4961 } 4962 return retval; 4963 } 4964 4965 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 4966 del_timer_sync(&instance->sriov_heartbeat_timer); 4967 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4968 set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags); 4969 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); 4970 instance->instancet->disable_intr(instance); 4971 megasas_sync_irqs((unsigned long)instance); 4972 4973 /* First try waiting for commands to complete */ 4974 if (megasas_wait_for_outstanding_fusion(instance, reason, 4975 &convert)) { 4976 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4977 dev_warn(&instance->pdev->dev, "resetting fusion " 4978 "adapter scsi%d.\n", instance->host->host_no); 4979 if (convert) 4980 reason = 0; 4981 4982 if (megasas_dbg_lvl & OCR_DEBUG) 4983 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); 4984 4985 /* Now return commands back to the OS */ 4986 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4987 cmd_fusion = fusion->cmd_list[i]; 4988 /*check for extra commands issued by driver*/ 4989 if (instance->adapter_type >= VENTURA_SERIES) { 4990 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; 4991 megasas_return_cmd_fusion(instance, r1_cmd); 4992 } 4993 scmd_local = cmd_fusion->scmd; 4994 if (cmd_fusion->scmd) { 4995 if (megasas_dbg_lvl & OCR_DEBUG) { 4996 sdev_printk(KERN_INFO, 4997 cmd_fusion->scmd->device, "SMID: 0x%x\n", 4998 cmd_fusion->index); 4999 megasas_dump_fusion_io(cmd_fusion->scmd); 5000 } 5001 5002 if (cmd_fusion->io_request->Function == 5003 MPI2_FUNCTION_SCSI_IO_REQUEST) 5004 fpio_count++; 5005 5006 scmd_local->result = 5007 megasas_check_mpio_paths(instance, 5008 scmd_local); 5009 if (instance->ldio_threshold && 5010 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 5011 atomic_dec(&instance->ldio_outstanding); 5012 megasas_return_cmd_fusion(instance, cmd_fusion); 5013 scsi_dma_unmap(scmd_local); 5014 scsi_done(scmd_local); 5015 } 5016 } 5017 5018 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n", 5019 fpio_count); 5020 5021 atomic_set(&instance->fw_outstanding, 0); 5022 5023 status_reg = instance->instancet->read_fw_status_reg(instance); 5024 abs_state = status_reg & MFI_STATE_MASK; 5025 reset_adapter = status_reg & MFI_RESET_ADAPTER; 5026 if (instance->disableOnlineCtrlReset || 5027 (abs_state == MFI_STATE_FAULT && !reset_adapter)) { 5028 /* Reset not supported, kill adapter */ 5029 dev_warn(&instance->pdev->dev, "Reset not supported" 5030 ", killing adapter scsi%d.\n", 5031 instance->host->host_no); 5032 goto kill_hba; 5033 } 5034 5035 /* Let SR-IOV VF & PF sync up if there was a HB failure */ 5036 if (instance->requestorId && !reason) { 5037 msleep(MEGASAS_OCR_SETTLE_TIME_VF); 5038 do_adp_reset = false; 5039 max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF; 5040 } 5041 5042 /* Now try to reset the chip */ 5043 for (i = 0; i < max_reset_tries; i++) { 5044 /* 5045 * Do adp reset and wait for 5046 * controller to transition to ready 5047 */ 5048 if (megasas_adp_reset_wait_for_ready(instance, 5049 do_adp_reset, 1) == FAILED) 5050 continue; 5051 5052 /* Wait for FW to become ready */ 5053 if (megasas_transition_to_ready(instance, 1)) { 5054 dev_warn(&instance->pdev->dev, 5055 "Failed to transition controller to ready for " 5056 "scsi%d.\n", instance->host->host_no); 5057 continue; 5058 } 5059 megasas_reset_reply_desc(instance); 5060 megasas_fusion_update_can_queue(instance, OCR_CONTEXT); 5061 5062 if (megasas_ioc_init_fusion(instance)) { 5063 continue; 5064 } 5065 5066 if (megasas_get_ctrl_info(instance)) { 5067 dev_info(&instance->pdev->dev, 5068 "Failed from %s %d\n", 5069 __func__, __LINE__); 5070 goto kill_hba; 5071 } 5072 5073 megasas_refire_mgmt_cmd(instance, 5074 (i == (MEGASAS_FUSION_MAX_RESET_TRIES - 1) 5075 ? 1 : 0)); 5076 5077 /* Reset load balance info */ 5078 if (fusion->load_balance_info) 5079 memset(fusion->load_balance_info, 0, 5080 (sizeof(struct LD_LOAD_BALANCE_INFO) * 5081 MAX_LOGICAL_DRIVES_EXT)); 5082 5083 if (!megasas_get_map_info(instance)) { 5084 megasas_sync_map_info(instance); 5085 } else { 5086 /* 5087 * Return pending polled mode cmds before 5088 * retrying OCR 5089 */ 5090 megasas_return_polled_cmds(instance); 5091 continue; 5092 } 5093 5094 megasas_setup_jbod_map(instance); 5095 5096 /* reset stream detection array */ 5097 if (instance->adapter_type >= VENTURA_SERIES) { 5098 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { 5099 memset(fusion->stream_detect_by_ld[j], 5100 0, sizeof(struct LD_STREAM_DETECT)); 5101 fusion->stream_detect_by_ld[j]->mru_bit_map 5102 = MR_STREAM_BITMAP; 5103 } 5104 } 5105 5106 clear_bit(MEGASAS_FUSION_IN_RESET, 5107 &instance->reset_flags); 5108 instance->instancet->enable_intr(instance); 5109 megasas_enable_irq_poll(instance); 5110 shost_for_each_device(sdev, shost) { 5111 if ((instance->tgt_prop) && 5112 (instance->nvme_page_size)) 5113 ret_target_prop = megasas_get_target_prop(instance, sdev); 5114 5115 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 5116 megasas_set_dynamic_target_properties(sdev, is_target_prop); 5117 } 5118 5119 status_reg = instance->instancet->read_fw_status_reg 5120 (instance); 5121 abs_state = status_reg & MFI_STATE_MASK; 5122 if (abs_state != MFI_STATE_OPERATIONAL) { 5123 dev_info(&instance->pdev->dev, 5124 "Adapter is not OPERATIONAL, state 0x%x for scsi:%d\n", 5125 abs_state, instance->host->host_no); 5126 goto out; 5127 } 5128 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 5129 5130 dev_info(&instance->pdev->dev, 5131 "Adapter is OPERATIONAL for scsi:%d\n", 5132 instance->host->host_no); 5133 5134 /* Restart SR-IOV heartbeat */ 5135 if (instance->requestorId) { 5136 if (!megasas_sriov_start_heartbeat(instance, 0)) 5137 megasas_start_timer(instance); 5138 else 5139 instance->skip_heartbeat_timer_del = 1; 5140 } 5141 5142 if (instance->crash_dump_drv_support && 5143 instance->crash_dump_app_support) 5144 megasas_set_crash_dump_params(instance, 5145 MR_CRASH_BUF_TURN_ON); 5146 else 5147 megasas_set_crash_dump_params(instance, 5148 MR_CRASH_BUF_TURN_OFF); 5149 5150 if (instance->snapdump_wait_time) { 5151 megasas_get_snapdump_properties(instance); 5152 dev_info(&instance->pdev->dev, 5153 "Snap dump wait time\t: %d\n", 5154 instance->snapdump_wait_time); 5155 } 5156 5157 retval = SUCCESS; 5158 5159 /* Adapter reset completed successfully */ 5160 dev_warn(&instance->pdev->dev, 5161 "Reset successful for scsi%d.\n", 5162 instance->host->host_no); 5163 5164 goto out; 5165 } 5166 /* Reset failed, kill the adapter */ 5167 dev_warn(&instance->pdev->dev, "Reset failed, killing " 5168 "adapter scsi%d.\n", instance->host->host_no); 5169 goto kill_hba; 5170 } else { 5171 /* For VF: Restart HB timer if we didn't OCR */ 5172 if (instance->requestorId) { 5173 megasas_start_timer(instance); 5174 } 5175 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 5176 instance->instancet->enable_intr(instance); 5177 megasas_enable_irq_poll(instance); 5178 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 5179 goto out; 5180 } 5181 kill_hba: 5182 megaraid_sas_kill_hba(instance); 5183 megasas_enable_irq_poll(instance); 5184 instance->skip_heartbeat_timer_del = 1; 5185 retval = FAILED; 5186 out: 5187 clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags); 5188 mutex_unlock(&instance->reset_mutex); 5189 return retval; 5190 } 5191 5192 /* Fusion Crash dump collection */ 5193 static void megasas_fusion_crash_dump(struct megasas_instance *instance) 5194 { 5195 u32 status_reg; 5196 u8 partial_copy = 0; 5197 int wait = 0; 5198 5199 5200 status_reg = instance->instancet->read_fw_status_reg(instance); 5201 5202 /* 5203 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer 5204 * to host crash buffers 5205 */ 5206 if (instance->drv_buf_index == 0) { 5207 /* Buffer is already allocated for old Crash dump. 5208 * Do OCR and do not wait for crash dump collection 5209 */ 5210 if (instance->drv_buf_alloc) { 5211 dev_info(&instance->pdev->dev, "earlier crash dump is " 5212 "not yet copied by application, ignoring this " 5213 "crash dump and initiating OCR\n"); 5214 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 5215 writel(status_reg, 5216 &instance->reg_set->outbound_scratch_pad_0); 5217 readl(&instance->reg_set->outbound_scratch_pad_0); 5218 return; 5219 } 5220 megasas_alloc_host_crash_buffer(instance); 5221 dev_info(&instance->pdev->dev, "Number of host crash buffers " 5222 "allocated: %d\n", instance->drv_buf_alloc); 5223 } 5224 5225 while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) && 5226 (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) { 5227 if (!(status_reg & MFI_STATE_DMADONE)) { 5228 /* 5229 * Next crash dump buffer is not yet DMA'd by FW 5230 * Check after 10ms. Wait for 1 second for FW to 5231 * post the next buffer. If not bail out. 5232 */ 5233 wait++; 5234 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS); 5235 status_reg = instance->instancet->read_fw_status_reg( 5236 instance); 5237 continue; 5238 } 5239 5240 wait = 0; 5241 if (instance->drv_buf_index >= instance->drv_buf_alloc) { 5242 dev_info(&instance->pdev->dev, 5243 "Driver is done copying the buffer: %d\n", 5244 instance->drv_buf_alloc); 5245 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 5246 partial_copy = 1; 5247 break; 5248 } else { 5249 memcpy(instance->crash_buf[instance->drv_buf_index], 5250 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); 5251 instance->drv_buf_index++; 5252 status_reg &= ~MFI_STATE_DMADONE; 5253 } 5254 5255 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0); 5256 readl(&instance->reg_set->outbound_scratch_pad_0); 5257 5258 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS); 5259 status_reg = instance->instancet->read_fw_status_reg(instance); 5260 } 5261 5262 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { 5263 dev_info(&instance->pdev->dev, "Crash Dump is available,number " 5264 "of copied buffers: %d\n", instance->drv_buf_index); 5265 instance->fw_crash_buffer_size = instance->drv_buf_index; 5266 instance->fw_crash_state = AVAILABLE; 5267 instance->drv_buf_index = 0; 5268 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0); 5269 readl(&instance->reg_set->outbound_scratch_pad_0); 5270 if (!partial_copy) 5271 megasas_reset_fusion(instance->host, 0); 5272 } 5273 } 5274 5275 5276 /* Fusion OCR work queue */ 5277 void megasas_fusion_ocr_wq(struct work_struct *work) 5278 { 5279 struct megasas_instance *instance = 5280 container_of(work, struct megasas_instance, work_init); 5281 5282 megasas_reset_fusion(instance->host, 0); 5283 } 5284 5285 /* Allocate fusion context */ 5286 int 5287 megasas_alloc_fusion_context(struct megasas_instance *instance) 5288 { 5289 struct fusion_context *fusion; 5290 5291 instance->ctrl_context = kzalloc(sizeof(struct fusion_context), 5292 GFP_KERNEL); 5293 if (!instance->ctrl_context) { 5294 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 5295 __func__, __LINE__); 5296 return -ENOMEM; 5297 } 5298 5299 fusion = instance->ctrl_context; 5300 5301 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 5302 sizeof(LD_SPAN_INFO)); 5303 fusion->log_to_span = 5304 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 5305 fusion->log_to_span_pages); 5306 if (!fusion->log_to_span) { 5307 fusion->log_to_span = 5308 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 5309 sizeof(LD_SPAN_INFO))); 5310 if (!fusion->log_to_span) { 5311 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 5312 __func__, __LINE__); 5313 kfree(instance->ctrl_context); 5314 return -ENOMEM; 5315 } 5316 } 5317 5318 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 5319 sizeof(struct LD_LOAD_BALANCE_INFO)); 5320 fusion->load_balance_info = 5321 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 5322 fusion->load_balance_info_pages); 5323 if (!fusion->load_balance_info) { 5324 fusion->load_balance_info = 5325 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 5326 sizeof(struct LD_LOAD_BALANCE_INFO))); 5327 if (!fusion->load_balance_info) 5328 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " 5329 "continuing without Load Balance support\n"); 5330 } 5331 5332 return 0; 5333 } 5334 5335 void 5336 megasas_free_fusion_context(struct megasas_instance *instance) 5337 { 5338 struct fusion_context *fusion = instance->ctrl_context; 5339 5340 if (fusion) { 5341 if (fusion->load_balance_info) { 5342 if (is_vmalloc_addr(fusion->load_balance_info)) 5343 vfree(fusion->load_balance_info); 5344 else 5345 free_pages((ulong)fusion->load_balance_info, 5346 fusion->load_balance_info_pages); 5347 } 5348 5349 if (fusion->log_to_span) { 5350 if (is_vmalloc_addr(fusion->log_to_span)) 5351 vfree(fusion->log_to_span); 5352 else 5353 free_pages((ulong)fusion->log_to_span, 5354 fusion->log_to_span_pages); 5355 } 5356 5357 kfree(fusion); 5358 } 5359 } 5360 5361 struct megasas_instance_template megasas_instance_template_fusion = { 5362 .enable_intr = megasas_enable_intr_fusion, 5363 .disable_intr = megasas_disable_intr_fusion, 5364 .clear_intr = megasas_clear_intr_fusion, 5365 .read_fw_status_reg = megasas_read_fw_status_reg_fusion, 5366 .adp_reset = megasas_adp_reset_fusion, 5367 .check_reset = megasas_check_reset_fusion, 5368 .service_isr = megasas_isr_fusion, 5369 .tasklet = megasas_complete_cmd_dpc_fusion, 5370 .init_adapter = megasas_init_adapter_fusion, 5371 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, 5372 .issue_dcmd = megasas_issue_dcmd_fusion, 5373 }; 5374