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 51extern void 52megasas_complete_cmd(struct megasas_instance *instance, 53 struct megasas_cmd *cmd, u8 alt_status); 54int 55wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 56 int seconds); 57 58int 59megasas_clear_intr_fusion(struct megasas_instance *instance); 60 61int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 62 63extern u32 megasas_dbg_lvl; 64int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 65 int initial); 66extern struct megasas_mgmt_info megasas_mgmt_info; 67extern unsigned int resetwaittime; 68extern unsigned int dual_qdepth_disable; 69static void megasas_free_rdpq_fusion(struct megasas_instance *instance); 70static void megasas_free_reply_fusion(struct megasas_instance *instance); 71static inline 72void megasas_configure_queue_sizes(struct megasas_instance *instance); 73static 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 initiates 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 */ 87int 88megasas_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; 120out: 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 */ 142static 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 */ 164static void 165megasas_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 */ 186static void 187megasas_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 200int 201megasas_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 223static inline void 224megasas_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 234static inline void 235megasas_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 245static inline int 246megasas_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 */ 264inline 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 */ 278inline 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 */ 292static void 293megasas_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 */ 319static void 320megasas_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 skipped because underlying firmware has 338 * more resource than exposed to the OS. 339 * 340 */ 341static void 342megasas_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 388static inline void 389megasas_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 */ 419void 420megasas_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 */ 481static 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 585static int 586megasas_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 625static int 626megasas_alloc_request_fusion(struct megasas_instance *instance) 627{ 628 struct fusion_context *fusion; 629 630 fusion = instance->ctrl_context; 631 632retry_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 707static int 708megasas_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 786static int 787megasas_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 911static void 912megasas_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 936static void 937megasas_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 */ 969static int 970megasas_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 1029fail_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 */ 1042int 1043wait_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 */ 1080int 1081megasas_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 (reset_devices) 1205 drv_ops->mfi_capabilities.support_memdump = 1; 1206 1207 if (instance->consistent_mask_64bit) 1208 drv_ops->mfi_capabilities.support_64bit_mode = 1; 1209 1210 /* Convert capability to LE32 */ 1211 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); 1212 1213 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID); 1214 if (instance->system_info_buf && sys_info) { 1215 memcpy(instance->system_info_buf->systemId, sys_info, 1216 strlen(sys_info) > 64 ? 64 : strlen(sys_info)); 1217 instance->system_info_buf->systemIdLength = 1218 strlen(sys_info) > 64 ? 64 : strlen(sys_info); 1219 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h)); 1220 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h)); 1221 } 1222 1223 init_frame->queue_info_new_phys_addr_hi = 1224 cpu_to_le32(upper_32_bits(ioc_init_handle)); 1225 init_frame->queue_info_new_phys_addr_lo = 1226 cpu_to_le32(lower_32_bits(ioc_init_handle)); 1227 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); 1228 1229 /* 1230 * Each bit in replyqueue_mask represents one group of MSI-x vectors 1231 * (each group has 8 vectors) 1232 */ 1233 switch (instance->perf_mode) { 1234 case MR_BALANCED_PERF_MODE: 1235 init_frame->replyqueue_mask = 1236 cpu_to_le16(~(~0 << instance->low_latency_index_start/8)); 1237 break; 1238 case MR_IOPS_PERF_MODE: 1239 init_frame->replyqueue_mask = 1240 cpu_to_le16(~(~0 << instance->msix_vectors/8)); 1241 break; 1242 } 1243 1244 1245 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr)); 1246 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr)); 1247 req_desc.MFAIo.RequestFlags = 1248 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << 1249 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 1250 1251 /* 1252 * disable the intr before firing the init frame 1253 */ 1254 instance->instancet->disable_intr(instance); 1255 1256 for (i = 0; i < (10 * 1000); i += 20) { 1257 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1) 1258 msleep(20); 1259 else 1260 break; 1261 } 1262 1263 /* For AERO also, IOC_INIT requires 64 bit descriptor write */ 1264 megasas_write_64bit_req_desc(instance, &req_desc); 1265 1266 wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS); 1267 1268 frame_hdr = &cmd->frame->hdr; 1269 if (frame_hdr->cmd_status != 0) { 1270 ret = 1; 1271 goto fail_fw_init; 1272 } 1273 1274 if (instance->adapter_type >= AERO_SERIES) { 1275 scratch_pad_1 = megasas_readl 1276 (instance, &instance->reg_set->outbound_scratch_pad_1); 1277 1278 instance->atomic_desc_support = 1279 (scratch_pad_1 & MR_ATOMIC_DESCRIPTOR_SUPPORT_OFFSET) ? 1 : 0; 1280 1281 dev_info(&instance->pdev->dev, "FW supports atomic descriptor\t: %s\n", 1282 instance->atomic_desc_support ? "Yes" : "No"); 1283 } 1284 1285 return 0; 1286 1287fail_fw_init: 1288 dev_err(&instance->pdev->dev, 1289 "Init cmd return status FAILED for SCSI host %d\n", 1290 instance->host->host_no); 1291 1292 return ret; 1293} 1294 1295/** 1296 * megasas_sync_pd_seq_num - JBOD SEQ MAP 1297 * @instance: Adapter soft state 1298 * @pend: set to 1, if it is pended jbod map. 1299 * 1300 * Issue Jbod map to the firmware. If it is pended command, 1301 * issue command and return. If it is first instance of jbod map 1302 * issue and receive command. 1303 */ 1304int 1305megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { 1306 int ret = 0; 1307 size_t pd_seq_map_sz; 1308 struct megasas_cmd *cmd; 1309 struct megasas_dcmd_frame *dcmd; 1310 struct fusion_context *fusion = instance->ctrl_context; 1311 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1312 dma_addr_t pd_seq_h; 1313 1314 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; 1315 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; 1316 pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES); 1317 1318 cmd = megasas_get_cmd(instance); 1319 if (!cmd) { 1320 dev_err(&instance->pdev->dev, 1321 "Could not get mfi cmd. Fail from %s %d\n", 1322 __func__, __LINE__); 1323 return -ENOMEM; 1324 } 1325 1326 dcmd = &cmd->frame->dcmd; 1327 1328 memset(pd_sync, 0, pd_seq_map_sz); 1329 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1330 1331 if (pend) { 1332 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1333 dcmd->flags = MFI_FRAME_DIR_WRITE; 1334 instance->jbod_seq_cmd = cmd; 1335 } else { 1336 dcmd->flags = MFI_FRAME_DIR_READ; 1337 } 1338 1339 dcmd->cmd = MFI_CMD_DCMD; 1340 dcmd->cmd_status = 0xFF; 1341 dcmd->sge_count = 1; 1342 dcmd->timeout = 0; 1343 dcmd->pad_0 = 0; 1344 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz); 1345 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO); 1346 1347 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz); 1348 1349 if (pend) { 1350 instance->instancet->issue_dcmd(instance, cmd); 1351 return 0; 1352 } 1353 1354 /* Below code is only for non pended DCMD */ 1355 if (!instance->mask_interrupts) 1356 ret = megasas_issue_blocked_cmd(instance, cmd, 1357 MFI_IO_TIMEOUT_SECS); 1358 else 1359 ret = megasas_issue_polled(instance, cmd); 1360 1361 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) { 1362 dev_warn(&instance->pdev->dev, 1363 "driver supports max %d JBOD, but FW reports %d\n", 1364 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count)); 1365 ret = -EINVAL; 1366 } 1367 1368 if (ret == DCMD_TIMEOUT) 1369 dev_warn(&instance->pdev->dev, 1370 "%s DCMD timed out, continue without JBOD sequence map\n", 1371 __func__); 1372 1373 if (ret == DCMD_SUCCESS) 1374 instance->pd_seq_map_id++; 1375 1376 megasas_return_cmd(instance, cmd); 1377 return ret; 1378} 1379 1380/* 1381 * megasas_get_ld_map_info - Returns FW's ld_map structure 1382 * @instance: Adapter soft state 1383 * @pend: Pend the command or not 1384 * Issues an internal command (DCMD) to get the FW's controller PD 1385 * list structure. This information is mainly used to find out SYSTEM 1386 * supported by the FW. 1387 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO 1388 * dcmd.mbox.b[0] - number of LDs being sync'd 1389 * dcmd.mbox.b[1] - 0 - complete command immediately. 1390 * - 1 - pend till config change 1391 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP 1392 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and 1393 * uses extended struct MR_FW_RAID_MAP_EXT 1394 */ 1395static int 1396megasas_get_ld_map_info(struct megasas_instance *instance) 1397{ 1398 int ret = 0; 1399 struct megasas_cmd *cmd; 1400 struct megasas_dcmd_frame *dcmd; 1401 void *ci; 1402 dma_addr_t ci_h = 0; 1403 u32 size_map_info; 1404 struct fusion_context *fusion; 1405 1406 cmd = megasas_get_cmd(instance); 1407 1408 if (!cmd) { 1409 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n"); 1410 return -ENOMEM; 1411 } 1412 1413 fusion = instance->ctrl_context; 1414 1415 if (!fusion) { 1416 megasas_return_cmd(instance, cmd); 1417 return -ENXIO; 1418 } 1419 1420 dcmd = &cmd->frame->dcmd; 1421 1422 size_map_info = fusion->current_map_sz; 1423 1424 ci = (void *) fusion->ld_map[(instance->map_id & 1)]; 1425 ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; 1426 1427 if (!ci) { 1428 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n"); 1429 megasas_return_cmd(instance, cmd); 1430 return -ENOMEM; 1431 } 1432 1433 memset(ci, 0, fusion->max_map_sz); 1434 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1435 dcmd->cmd = MFI_CMD_DCMD; 1436 dcmd->cmd_status = 0xFF; 1437 dcmd->sge_count = 1; 1438 dcmd->flags = MFI_FRAME_DIR_READ; 1439 dcmd->timeout = 0; 1440 dcmd->pad_0 = 0; 1441 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1442 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1443 1444 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1445 1446 if (!instance->mask_interrupts) 1447 ret = megasas_issue_blocked_cmd(instance, cmd, 1448 MFI_IO_TIMEOUT_SECS); 1449 else 1450 ret = megasas_issue_polled(instance, cmd); 1451 1452 if (ret == DCMD_TIMEOUT) 1453 dev_warn(&instance->pdev->dev, 1454 "%s DCMD timed out, RAID map is disabled\n", 1455 __func__); 1456 1457 megasas_return_cmd(instance, cmd); 1458 1459 return ret; 1460} 1461 1462u8 1463megasas_get_map_info(struct megasas_instance *instance) 1464{ 1465 struct fusion_context *fusion = instance->ctrl_context; 1466 1467 fusion->fast_path_io = 0; 1468 if (!megasas_get_ld_map_info(instance)) { 1469 if (MR_ValidateMapInfo(instance, instance->map_id)) { 1470 fusion->fast_path_io = 1; 1471 return 0; 1472 } 1473 } 1474 return 1; 1475} 1476 1477/* 1478 * megasas_sync_map_info - Returns FW's ld_map structure 1479 * @instance: Adapter soft state 1480 * 1481 * Issues an internal command (DCMD) to get the FW's controller PD 1482 * list structure. This information is mainly used to find out SYSTEM 1483 * supported by the FW. 1484 */ 1485int 1486megasas_sync_map_info(struct megasas_instance *instance) 1487{ 1488 int i; 1489 struct megasas_cmd *cmd; 1490 struct megasas_dcmd_frame *dcmd; 1491 u16 num_lds; 1492 struct fusion_context *fusion; 1493 struct MR_LD_TARGET_SYNC *ci = NULL; 1494 struct MR_DRV_RAID_MAP_ALL *map; 1495 struct MR_LD_RAID *raid; 1496 struct MR_LD_TARGET_SYNC *ld_sync; 1497 dma_addr_t ci_h = 0; 1498 u32 size_map_info; 1499 1500 cmd = megasas_get_cmd(instance); 1501 1502 if (!cmd) { 1503 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n"); 1504 return -ENOMEM; 1505 } 1506 1507 fusion = instance->ctrl_context; 1508 1509 if (!fusion) { 1510 megasas_return_cmd(instance, cmd); 1511 return 1; 1512 } 1513 1514 map = fusion->ld_drv_map[instance->map_id & 1]; 1515 1516 num_lds = le16_to_cpu(map->raidMap.ldCount); 1517 1518 dcmd = &cmd->frame->dcmd; 1519 1520 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1521 1522 ci = (struct MR_LD_TARGET_SYNC *) 1523 fusion->ld_map[(instance->map_id - 1) & 1]; 1524 memset(ci, 0, fusion->max_map_sz); 1525 1526 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; 1527 1528 ld_sync = (struct MR_LD_TARGET_SYNC *)ci; 1529 1530 for (i = 0; i < num_lds; i++, ld_sync++) { 1531 raid = MR_LdRaidGet(i, map); 1532 ld_sync->targetId = MR_GetLDTgtId(i, map); 1533 ld_sync->seqNum = raid->seqNum; 1534 } 1535 1536 size_map_info = fusion->current_map_sz; 1537 1538 dcmd->cmd = MFI_CMD_DCMD; 1539 dcmd->cmd_status = 0xFF; 1540 dcmd->sge_count = 1; 1541 dcmd->flags = MFI_FRAME_DIR_WRITE; 1542 dcmd->timeout = 0; 1543 dcmd->pad_0 = 0; 1544 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1545 dcmd->mbox.b[0] = num_lds; 1546 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1547 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1548 1549 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1550 1551 instance->map_update_cmd = cmd; 1552 1553 instance->instancet->issue_dcmd(instance, cmd); 1554 1555 return 0; 1556} 1557 1558/* 1559 * meagasas_display_intel_branding - Display branding string 1560 * @instance: per adapter object 1561 * 1562 * Return nothing. 1563 */ 1564static void 1565megasas_display_intel_branding(struct megasas_instance *instance) 1566{ 1567 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) 1568 return; 1569 1570 switch (instance->pdev->device) { 1571 case PCI_DEVICE_ID_LSI_INVADER: 1572 switch (instance->pdev->subsystem_device) { 1573 case MEGARAID_INTEL_RS3DC080_SSDID: 1574 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1575 instance->host->host_no, 1576 MEGARAID_INTEL_RS3DC080_BRANDING); 1577 break; 1578 case MEGARAID_INTEL_RS3DC040_SSDID: 1579 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1580 instance->host->host_no, 1581 MEGARAID_INTEL_RS3DC040_BRANDING); 1582 break; 1583 case MEGARAID_INTEL_RS3SC008_SSDID: 1584 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1585 instance->host->host_no, 1586 MEGARAID_INTEL_RS3SC008_BRANDING); 1587 break; 1588 case MEGARAID_INTEL_RS3MC044_SSDID: 1589 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1590 instance->host->host_no, 1591 MEGARAID_INTEL_RS3MC044_BRANDING); 1592 break; 1593 default: 1594 break; 1595 } 1596 break; 1597 case PCI_DEVICE_ID_LSI_FURY: 1598 switch (instance->pdev->subsystem_device) { 1599 case MEGARAID_INTEL_RS3WC080_SSDID: 1600 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1601 instance->host->host_no, 1602 MEGARAID_INTEL_RS3WC080_BRANDING); 1603 break; 1604 case MEGARAID_INTEL_RS3WC040_SSDID: 1605 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1606 instance->host->host_no, 1607 MEGARAID_INTEL_RS3WC040_BRANDING); 1608 break; 1609 default: 1610 break; 1611 } 1612 break; 1613 case PCI_DEVICE_ID_LSI_CUTLASS_52: 1614 case PCI_DEVICE_ID_LSI_CUTLASS_53: 1615 switch (instance->pdev->subsystem_device) { 1616 case MEGARAID_INTEL_RMS3BC160_SSDID: 1617 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1618 instance->host->host_no, 1619 MEGARAID_INTEL_RMS3BC160_BRANDING); 1620 break; 1621 default: 1622 break; 1623 } 1624 break; 1625 default: 1626 break; 1627 } 1628} 1629 1630/** 1631 * megasas_allocate_raid_maps - Allocate memory for RAID maps 1632 * @instance: Adapter soft state 1633 * 1634 * return: if success: return 0 1635 * failed: return -ENOMEM 1636 */ 1637static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) 1638{ 1639 struct fusion_context *fusion; 1640 int i = 0; 1641 1642 fusion = instance->ctrl_context; 1643 1644 fusion->drv_map_pages = get_order(fusion->drv_map_sz); 1645 1646 for (i = 0; i < 2; i++) { 1647 fusion->ld_map[i] = NULL; 1648 1649 fusion->ld_drv_map[i] = (void *) 1650 __get_free_pages(__GFP_ZERO | GFP_KERNEL, 1651 fusion->drv_map_pages); 1652 1653 if (!fusion->ld_drv_map[i]) { 1654 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); 1655 1656 if (!fusion->ld_drv_map[i]) { 1657 dev_err(&instance->pdev->dev, 1658 "Could not allocate memory for local map" 1659 " size requested: %d\n", 1660 fusion->drv_map_sz); 1661 goto ld_drv_map_alloc_fail; 1662 } 1663 } 1664 } 1665 1666 for (i = 0; i < 2; i++) { 1667 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, 1668 fusion->max_map_sz, 1669 &fusion->ld_map_phys[i], 1670 GFP_KERNEL); 1671 if (!fusion->ld_map[i]) { 1672 dev_err(&instance->pdev->dev, 1673 "Could not allocate memory for map info %s:%d\n", 1674 __func__, __LINE__); 1675 goto ld_map_alloc_fail; 1676 } 1677 } 1678 1679 return 0; 1680 1681ld_map_alloc_fail: 1682 for (i = 0; i < 2; i++) { 1683 if (fusion->ld_map[i]) 1684 dma_free_coherent(&instance->pdev->dev, 1685 fusion->max_map_sz, 1686 fusion->ld_map[i], 1687 fusion->ld_map_phys[i]); 1688 } 1689 1690ld_drv_map_alloc_fail: 1691 for (i = 0; i < 2; i++) { 1692 if (fusion->ld_drv_map[i]) { 1693 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 1694 vfree(fusion->ld_drv_map[i]); 1695 else 1696 free_pages((ulong)fusion->ld_drv_map[i], 1697 fusion->drv_map_pages); 1698 } 1699 } 1700 1701 return -ENOMEM; 1702} 1703 1704/** 1705 * megasas_configure_queue_sizes - Calculate size of request desc queue, 1706 * reply desc queue, 1707 * IO request frame queue, set can_queue. 1708 * @instance: Adapter soft state 1709 * @return: void 1710 */ 1711static inline 1712void megasas_configure_queue_sizes(struct megasas_instance *instance) 1713{ 1714 struct fusion_context *fusion; 1715 u16 max_cmd; 1716 1717 fusion = instance->ctrl_context; 1718 max_cmd = instance->max_fw_cmds; 1719 1720 if (instance->adapter_type >= VENTURA_SERIES) 1721 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS; 1722 else 1723 instance->max_mpt_cmds = instance->max_fw_cmds; 1724 1725 instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds; 1726 instance->cur_can_queue = instance->max_scsi_cmds; 1727 instance->host->can_queue = instance->cur_can_queue; 1728 1729 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16; 1730 1731 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * 1732 instance->max_mpt_cmds; 1733 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) * 1734 (fusion->reply_q_depth); 1735 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + 1736 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1737 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */ 1738} 1739 1740static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance) 1741{ 1742 struct fusion_context *fusion; 1743 struct megasas_cmd *cmd; 1744 1745 fusion = instance->ctrl_context; 1746 1747 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL); 1748 1749 if (!cmd) { 1750 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1751 __func__, __LINE__); 1752 return -ENOMEM; 1753 } 1754 1755 cmd->frame = dma_alloc_coherent(&instance->pdev->dev, 1756 IOC_INIT_FRAME_SIZE, 1757 &cmd->frame_phys_addr, GFP_KERNEL); 1758 1759 if (!cmd->frame) { 1760 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1761 __func__, __LINE__); 1762 kfree(cmd); 1763 return -ENOMEM; 1764 } 1765 1766 fusion->ioc_init_cmd = cmd; 1767 return 0; 1768} 1769 1770/** 1771 * megasas_free_ioc_init_cmd - Free IOC INIT command frame 1772 * @instance: Adapter soft state 1773 */ 1774static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance) 1775{ 1776 struct fusion_context *fusion; 1777 1778 fusion = instance->ctrl_context; 1779 1780 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame) 1781 dma_free_coherent(&instance->pdev->dev, 1782 IOC_INIT_FRAME_SIZE, 1783 fusion->ioc_init_cmd->frame, 1784 fusion->ioc_init_cmd->frame_phys_addr); 1785 1786 kfree(fusion->ioc_init_cmd); 1787} 1788 1789/** 1790 * megasas_init_adapter_fusion - Initializes the FW 1791 * @instance: Adapter soft state 1792 * 1793 * This is the main function for initializing firmware. 1794 */ 1795static u32 1796megasas_init_adapter_fusion(struct megasas_instance *instance) 1797{ 1798 struct fusion_context *fusion; 1799 u32 scratch_pad_1; 1800 int i = 0, count; 1801 u32 status_reg; 1802 1803 fusion = instance->ctrl_context; 1804 1805 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT); 1806 1807 /* 1808 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames 1809 */ 1810 instance->max_mfi_cmds = 1811 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS; 1812 1813 megasas_configure_queue_sizes(instance); 1814 1815 scratch_pad_1 = megasas_readl(instance, 1816 &instance->reg_set->outbound_scratch_pad_1); 1817 /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set, 1818 * Firmware support extended IO chain frame which is 4 times more than 1819 * legacy Firmware. 1820 * Legacy Firmware - Frame size is (8 * 128) = 1K 1821 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K 1822 */ 1823 if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK) 1824 instance->max_chain_frame_sz = 1825 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1826 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO; 1827 else 1828 instance->max_chain_frame_sz = 1829 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1830 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO; 1831 1832 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) { 1833 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n", 1834 instance->max_chain_frame_sz, 1835 MEGASAS_CHAIN_FRAME_SZ_MIN); 1836 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN; 1837 } 1838 1839 fusion->max_sge_in_main_msg = 1840 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1841 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; 1842 1843 fusion->max_sge_in_chain = 1844 instance->max_chain_frame_sz 1845 / sizeof(union MPI2_SGE_IO_UNION); 1846 1847 instance->max_num_sge = 1848 rounddown_pow_of_two(fusion->max_sge_in_main_msg 1849 + fusion->max_sge_in_chain - 2); 1850 1851 /* Used for pass thru MFI frame (DCMD) */ 1852 fusion->chain_offset_mfi_pthru = 1853 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; 1854 1855 fusion->chain_offset_io_request = 1856 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - 1857 sizeof(union MPI2_SGE_IO_UNION))/16; 1858 1859 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 1860 count += instance->iopoll_q_count; 1861 1862 for (i = 0 ; i < count; i++) 1863 fusion->last_reply_idx[i] = 0; 1864 1865 /* 1866 * For fusion adapters, 3 commands for IOCTL and 8 commands 1867 * for driver's internal DCMDs. 1868 */ 1869 instance->max_scsi_cmds = instance->max_fw_cmds - 1870 (MEGASAS_FUSION_INTERNAL_CMDS + 1871 MEGASAS_FUSION_IOCTL_CMDS); 1872 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); 1873 1874 for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) 1875 atomic_set(&fusion->busy_mq_poll[i], 0); 1876 1877 if (megasas_alloc_ioc_init_frame(instance)) 1878 return 1; 1879 1880 /* 1881 * Allocate memory for descriptors 1882 * Create a pool of commands 1883 */ 1884 if (megasas_alloc_cmds(instance)) 1885 goto fail_alloc_mfi_cmds; 1886 if (megasas_alloc_cmds_fusion(instance)) 1887 goto fail_alloc_cmds; 1888 1889 if (megasas_ioc_init_fusion(instance)) { 1890 status_reg = instance->instancet->read_fw_status_reg(instance); 1891 if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) && 1892 (status_reg & MFI_RESET_ADAPTER)) { 1893 /* Do a chip reset and then retry IOC INIT once */ 1894 if (megasas_adp_reset_wait_for_ready 1895 (instance, true, 0) == FAILED) 1896 goto fail_ioc_init; 1897 1898 if (megasas_ioc_init_fusion(instance)) 1899 goto fail_ioc_init; 1900 } else { 1901 goto fail_ioc_init; 1902 } 1903 } 1904 1905 megasas_display_intel_branding(instance); 1906 if (megasas_get_ctrl_info(instance)) { 1907 dev_err(&instance->pdev->dev, 1908 "Could not get controller info. Fail from %s %d\n", 1909 __func__, __LINE__); 1910 goto fail_ioc_init; 1911 } 1912 1913 instance->flag_ieee = 1; 1914 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; 1915 instance->threshold_reply_count = instance->max_fw_cmds / 4; 1916 fusion->fast_path_io = 0; 1917 1918 if (megasas_allocate_raid_maps(instance)) 1919 goto fail_ioc_init; 1920 1921 if (!megasas_get_map_info(instance)) 1922 megasas_sync_map_info(instance); 1923 1924 return 0; 1925 1926fail_ioc_init: 1927 megasas_free_cmds_fusion(instance); 1928fail_alloc_cmds: 1929 megasas_free_cmds(instance); 1930fail_alloc_mfi_cmds: 1931 megasas_free_ioc_init_cmd(instance); 1932 return 1; 1933} 1934 1935/** 1936 * megasas_fault_detect_work - Worker function of 1937 * FW fault handling workqueue. 1938 * @work: FW fault work struct 1939 */ 1940static void 1941megasas_fault_detect_work(struct work_struct *work) 1942{ 1943 struct megasas_instance *instance = 1944 container_of(work, struct megasas_instance, 1945 fw_fault_work.work); 1946 u32 fw_state, dma_state, status; 1947 1948 /* Check the fw state */ 1949 fw_state = instance->instancet->read_fw_status_reg(instance) & 1950 MFI_STATE_MASK; 1951 1952 if (fw_state == MFI_STATE_FAULT) { 1953 dma_state = instance->instancet->read_fw_status_reg(instance) & 1954 MFI_STATE_DMADONE; 1955 /* Start collecting crash, if DMA bit is done */ 1956 if (instance->crash_dump_drv_support && 1957 instance->crash_dump_app_support && dma_state) { 1958 megasas_fusion_crash_dump(instance); 1959 } else { 1960 if (instance->unload == 0) { 1961 status = megasas_reset_fusion(instance->host, 0); 1962 if (status != SUCCESS) { 1963 dev_err(&instance->pdev->dev, 1964 "Failed from %s %d, do not re-arm timer\n", 1965 __func__, __LINE__); 1966 return; 1967 } 1968 } 1969 } 1970 } 1971 1972 if (instance->fw_fault_work_q) 1973 queue_delayed_work(instance->fw_fault_work_q, 1974 &instance->fw_fault_work, 1975 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL)); 1976} 1977 1978int 1979megasas_fusion_start_watchdog(struct megasas_instance *instance) 1980{ 1981 /* Check if the Fault WQ is already started */ 1982 if (instance->fw_fault_work_q) 1983 return SUCCESS; 1984 1985 INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work); 1986 1987 snprintf(instance->fault_handler_work_q_name, 1988 sizeof(instance->fault_handler_work_q_name), 1989 "poll_megasas%d_status", instance->host->host_no); 1990 1991 instance->fw_fault_work_q = 1992 create_singlethread_workqueue(instance->fault_handler_work_q_name); 1993 if (!instance->fw_fault_work_q) { 1994 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1995 __func__, __LINE__); 1996 return FAILED; 1997 } 1998 1999 queue_delayed_work(instance->fw_fault_work_q, 2000 &instance->fw_fault_work, 2001 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL)); 2002 2003 return SUCCESS; 2004} 2005 2006void 2007megasas_fusion_stop_watchdog(struct megasas_instance *instance) 2008{ 2009 struct workqueue_struct *wq; 2010 2011 if (instance->fw_fault_work_q) { 2012 wq = instance->fw_fault_work_q; 2013 instance->fw_fault_work_q = NULL; 2014 if (!cancel_delayed_work_sync(&instance->fw_fault_work)) 2015 flush_workqueue(wq); 2016 destroy_workqueue(wq); 2017 } 2018} 2019 2020/** 2021 * map_cmd_status - Maps FW cmd status to OS cmd status 2022 * @fusion: fusion context 2023 * @scmd: Pointer to cmd 2024 * @status: status of cmd returned by FW 2025 * @ext_status: ext status of cmd returned by FW 2026 * @data_length: command data length 2027 * @sense: command sense data 2028 */ 2029static void 2030map_cmd_status(struct fusion_context *fusion, 2031 struct scsi_cmnd *scmd, u8 status, u8 ext_status, 2032 u32 data_length, u8 *sense) 2033{ 2034 u8 cmd_type; 2035 int resid; 2036 2037 cmd_type = megasas_cmd_type(scmd); 2038 switch (status) { 2039 2040 case MFI_STAT_OK: 2041 scmd->result = DID_OK << 16; 2042 break; 2043 2044 case MFI_STAT_SCSI_IO_FAILED: 2045 case MFI_STAT_LD_INIT_IN_PROGRESS: 2046 scmd->result = (DID_ERROR << 16) | ext_status; 2047 break; 2048 2049 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2050 2051 scmd->result = (DID_OK << 16) | ext_status; 2052 if (ext_status == SAM_STAT_CHECK_CONDITION) { 2053 memcpy(scmd->sense_buffer, sense, 2054 SCSI_SENSE_BUFFERSIZE); 2055 } 2056 2057 /* 2058 * If the IO request is partially completed, then MR FW will 2059 * update "io_request->DataLength" field with actual number of 2060 * bytes transferred.Driver will set residual bytes count in 2061 * SCSI command structure. 2062 */ 2063 resid = (scsi_bufflen(scmd) - data_length); 2064 scsi_set_resid(scmd, resid); 2065 2066 if (resid && 2067 ((cmd_type == READ_WRITE_LDIO) || 2068 (cmd_type == READ_WRITE_SYSPDIO))) 2069 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" 2070 " requested/completed 0x%x/0x%x\n", 2071 status, scsi_bufflen(scmd), data_length); 2072 break; 2073 2074 case MFI_STAT_LD_OFFLINE: 2075 case MFI_STAT_DEVICE_NOT_FOUND: 2076 scmd->result = DID_BAD_TARGET << 16; 2077 break; 2078 case MFI_STAT_CONFIG_SEQ_MISMATCH: 2079 scmd->result = DID_IMM_RETRY << 16; 2080 break; 2081 default: 2082 scmd->result = DID_ERROR << 16; 2083 break; 2084 } 2085} 2086 2087/** 2088 * megasas_is_prp_possible - 2089 * Checks if native NVMe PRPs can be built for the IO 2090 * 2091 * @instance: Adapter soft state 2092 * @scmd: SCSI command from the mid-layer 2093 * @sge_count: scatter gather element count. 2094 * 2095 * Returns: true: PRPs can be built 2096 * false: IEEE SGLs needs to be built 2097 */ 2098static bool 2099megasas_is_prp_possible(struct megasas_instance *instance, 2100 struct scsi_cmnd *scmd, int sge_count) 2101{ 2102 u32 data_length = 0; 2103 struct scatterlist *sg_scmd; 2104 bool build_prp = false; 2105 u32 mr_nvme_pg_size; 2106 2107 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 2108 MR_DEFAULT_NVME_PAGE_SIZE); 2109 data_length = scsi_bufflen(scmd); 2110 sg_scmd = scsi_sglist(scmd); 2111 2112 /* 2113 * NVMe uses one PRP for each page (or part of a page) 2114 * look at the data length - if 4 pages or less then IEEE is OK 2115 * if > 5 pages then we need to build a native SGL 2116 * if > 4 and <= 5 pages, then check physical address of 1st SG entry 2117 * if this first size in the page is >= the residual beyond 4 pages 2118 * then use IEEE, otherwise use native SGL 2119 */ 2120 2121 if (data_length > (mr_nvme_pg_size * 5)) { 2122 build_prp = true; 2123 } else if ((data_length > (mr_nvme_pg_size * 4)) && 2124 (data_length <= (mr_nvme_pg_size * 5))) { 2125 /* check if 1st SG entry size is < residual beyond 4 pages */ 2126 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) 2127 build_prp = true; 2128 } 2129 2130 return build_prp; 2131} 2132 2133/** 2134 * megasas_make_prp_nvme - 2135 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only 2136 * 2137 * @instance: Adapter soft state 2138 * @scmd: SCSI command from the mid-layer 2139 * @sgl_ptr: SGL to be filled in 2140 * @cmd: Fusion command frame 2141 * @sge_count: scatter gather element count. 2142 * 2143 * Returns: true: PRPs are built 2144 * false: IEEE SGLs needs to be built 2145 */ 2146static bool 2147megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, 2148 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2149 struct megasas_cmd_fusion *cmd, int sge_count) 2150{ 2151 int sge_len, offset, num_prp_in_chain = 0; 2152 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; 2153 u64 *ptr_sgl; 2154 dma_addr_t ptr_sgl_phys; 2155 u64 sge_addr; 2156 u32 page_mask, page_mask_result; 2157 struct scatterlist *sg_scmd; 2158 u32 first_prp_len; 2159 bool build_prp = false; 2160 int data_len = scsi_bufflen(scmd); 2161 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 2162 MR_DEFAULT_NVME_PAGE_SIZE); 2163 2164 build_prp = megasas_is_prp_possible(instance, scmd, sge_count); 2165 2166 if (!build_prp) 2167 return false; 2168 2169 /* 2170 * Nvme has a very convoluted prp format. One prp is required 2171 * for each page or partial page. Driver need to split up OS sg_list 2172 * entries if it is longer than one page or cross a page 2173 * boundary. Driver also have to insert a PRP list pointer entry as 2174 * the last entry in each physical page of the PRP list. 2175 * 2176 * NOTE: The first PRP "entry" is actually placed in the first 2177 * SGL entry in the main message as IEEE 64 format. The 2nd 2178 * entry in the main message is the chain element, and the rest 2179 * of the PRP entries are built in the contiguous pcie buffer. 2180 */ 2181 page_mask = mr_nvme_pg_size - 1; 2182 ptr_sgl = (u64 *)cmd->sg_frame; 2183 ptr_sgl_phys = cmd->sg_frame_phys_addr; 2184 memset(ptr_sgl, 0, instance->max_chain_frame_sz); 2185 2186 /* Build chain frame element which holds all prps except first*/ 2187 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) 2188 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); 2189 2190 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); 2191 main_chain_element->NextChainOffset = 0; 2192 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2193 IEEE_SGE_FLAGS_SYSTEM_ADDR | 2194 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; 2195 2196 /* Build first prp, sge need not to be page aligned*/ 2197 ptr_first_sgl = sgl_ptr; 2198 sg_scmd = scsi_sglist(scmd); 2199 sge_addr = sg_dma_address(sg_scmd); 2200 sge_len = sg_dma_len(sg_scmd); 2201 2202 offset = (u32)(sge_addr & page_mask); 2203 first_prp_len = mr_nvme_pg_size - offset; 2204 2205 ptr_first_sgl->Address = cpu_to_le64(sge_addr); 2206 ptr_first_sgl->Length = cpu_to_le32(first_prp_len); 2207 2208 data_len -= first_prp_len; 2209 2210 if (sge_len > first_prp_len) { 2211 sge_addr += first_prp_len; 2212 sge_len -= first_prp_len; 2213 } else if (sge_len == first_prp_len) { 2214 sg_scmd = sg_next(sg_scmd); 2215 sge_addr = sg_dma_address(sg_scmd); 2216 sge_len = sg_dma_len(sg_scmd); 2217 } 2218 2219 for (;;) { 2220 offset = (u32)(sge_addr & page_mask); 2221 2222 /* Put PRP pointer due to page boundary*/ 2223 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; 2224 if (unlikely(!page_mask_result)) { 2225 scmd_printk(KERN_NOTICE, 2226 scmd, "page boundary ptr_sgl: 0x%p\n", 2227 ptr_sgl); 2228 ptr_sgl_phys += 8; 2229 *ptr_sgl = cpu_to_le64(ptr_sgl_phys); 2230 ptr_sgl++; 2231 num_prp_in_chain++; 2232 } 2233 2234 *ptr_sgl = cpu_to_le64(sge_addr); 2235 ptr_sgl++; 2236 ptr_sgl_phys += 8; 2237 num_prp_in_chain++; 2238 2239 sge_addr += mr_nvme_pg_size; 2240 sge_len -= mr_nvme_pg_size; 2241 data_len -= mr_nvme_pg_size; 2242 2243 if (data_len <= 0) 2244 break; 2245 2246 if (sge_len > 0) 2247 continue; 2248 2249 sg_scmd = sg_next(sg_scmd); 2250 sge_addr = sg_dma_address(sg_scmd); 2251 sge_len = sg_dma_len(sg_scmd); 2252 } 2253 2254 main_chain_element->Length = 2255 cpu_to_le32(num_prp_in_chain * sizeof(u64)); 2256 2257 return build_prp; 2258} 2259 2260/** 2261 * megasas_make_sgl_fusion - Prepares 32-bit SGL 2262 * @instance: Adapter soft state 2263 * @scp: SCSI command from the mid-layer 2264 * @sgl_ptr: SGL to be filled in 2265 * @cmd: cmd we are working on 2266 * @sge_count: sge count 2267 * 2268 */ 2269static void 2270megasas_make_sgl_fusion(struct megasas_instance *instance, 2271 struct scsi_cmnd *scp, 2272 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2273 struct megasas_cmd_fusion *cmd, int sge_count) 2274{ 2275 int i, sg_processed; 2276 struct scatterlist *os_sgl; 2277 struct fusion_context *fusion; 2278 2279 fusion = instance->ctrl_context; 2280 2281 if (instance->adapter_type >= INVADER_SERIES) { 2282 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; 2283 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 2284 sgl_ptr_end->Flags = 0; 2285 } 2286 2287 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 2288 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); 2289 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); 2290 sgl_ptr->Flags = 0; 2291 if (instance->adapter_type >= INVADER_SERIES) 2292 if (i == sge_count - 1) 2293 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; 2294 sgl_ptr++; 2295 sg_processed = i + 1; 2296 2297 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && 2298 (sge_count > fusion->max_sge_in_main_msg)) { 2299 2300 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; 2301 if (instance->adapter_type >= INVADER_SERIES) { 2302 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2303 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != 2304 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) 2305 cmd->io_request->ChainOffset = 2306 fusion-> 2307 chain_offset_io_request; 2308 else 2309 cmd->io_request->ChainOffset = 0; 2310 } else 2311 cmd->io_request->ChainOffset = 2312 fusion->chain_offset_io_request; 2313 2314 sg_chain = sgl_ptr; 2315 /* Prepare chain element */ 2316 sg_chain->NextChainOffset = 0; 2317 if (instance->adapter_type >= INVADER_SERIES) 2318 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; 2319 else 2320 sg_chain->Flags = 2321 (IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2322 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); 2323 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); 2324 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); 2325 2326 sgl_ptr = 2327 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; 2328 memset(sgl_ptr, 0, instance->max_chain_frame_sz); 2329 } 2330 } 2331} 2332 2333/** 2334 * megasas_make_sgl - Build Scatter Gather List(SGLs) 2335 * @scp: SCSI command pointer 2336 * @instance: Soft instance of controller 2337 * @cmd: Fusion command pointer 2338 * 2339 * This function will build sgls based on device type. 2340 * For nvme drives, there is different way of building sgls in nvme native 2341 * format- PRPs(Physical Region Page). 2342 * 2343 * Returns the number of sg lists actually used, zero if the sg lists 2344 * is NULL, or -ENOMEM if the mapping failed 2345 */ 2346static 2347int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, 2348 struct megasas_cmd_fusion *cmd) 2349{ 2350 int sge_count; 2351 bool build_prp = false; 2352 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; 2353 2354 sge_count = scsi_dma_map(scp); 2355 2356 if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) 2357 return sge_count; 2358 2359 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; 2360 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2361 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && 2362 (cmd->pd_interface == NVME_PD)) 2363 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, 2364 cmd, sge_count); 2365 2366 if (!build_prp) 2367 megasas_make_sgl_fusion(instance, scp, sgl_chain64, 2368 cmd, sge_count); 2369 2370 return sge_count; 2371} 2372 2373/** 2374 * megasas_set_pd_lba - Sets PD LBA 2375 * @io_request: IO request 2376 * @cdb_len: cdb length 2377 * @io_info: IO information 2378 * @scp: SCSI command 2379 * @local_map_ptr: Raid map 2380 * @ref_tag: Primary reference tag 2381 * 2382 * Used to set the PD LBA in CDB for FP IOs 2383 */ 2384static void 2385megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, 2386 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, 2387 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) 2388{ 2389 struct MR_LD_RAID *raid; 2390 u16 ld; 2391 u64 start_blk = io_info->pdBlock; 2392 u8 *cdb = io_request->CDB.CDB32; 2393 u32 num_blocks = io_info->numBlocks; 2394 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; 2395 2396 /* Check if T10 PI (DIF) is enabled for this LD */ 2397 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); 2398 raid = MR_LdRaidGet(ld, local_map_ptr); 2399 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { 2400 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2401 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; 2402 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; 2403 2404 if (scp->sc_data_direction == DMA_FROM_DEVICE) 2405 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; 2406 else 2407 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; 2408 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; 2409 2410 /* LBA */ 2411 cdb[12] = (u8)((start_blk >> 56) & 0xff); 2412 cdb[13] = (u8)((start_blk >> 48) & 0xff); 2413 cdb[14] = (u8)((start_blk >> 40) & 0xff); 2414 cdb[15] = (u8)((start_blk >> 32) & 0xff); 2415 cdb[16] = (u8)((start_blk >> 24) & 0xff); 2416 cdb[17] = (u8)((start_blk >> 16) & 0xff); 2417 cdb[18] = (u8)((start_blk >> 8) & 0xff); 2418 cdb[19] = (u8)(start_blk & 0xff); 2419 2420 /* Logical block reference tag */ 2421 io_request->CDB.EEDP32.PrimaryReferenceTag = 2422 cpu_to_be32(ref_tag); 2423 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); 2424 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ 2425 2426 /* Transfer length */ 2427 cdb[28] = (u8)((num_blocks >> 24) & 0xff); 2428 cdb[29] = (u8)((num_blocks >> 16) & 0xff); 2429 cdb[30] = (u8)((num_blocks >> 8) & 0xff); 2430 cdb[31] = (u8)(num_blocks & 0xff); 2431 2432 /* set SCSI IO EEDPFlags */ 2433 if (scp->sc_data_direction == DMA_FROM_DEVICE) { 2434 io_request->EEDPFlags = cpu_to_le16( 2435 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2436 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | 2437 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | 2438 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | 2439 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | 2440 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); 2441 } else { 2442 io_request->EEDPFlags = cpu_to_le16( 2443 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2444 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); 2445 } 2446 io_request->Control |= cpu_to_le32((0x4 << 26)); 2447 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); 2448 } else { 2449 /* Some drives don't support 16/12 byte CDB's, convert to 10 */ 2450 if (((cdb_len == 12) || (cdb_len == 16)) && 2451 (start_blk <= 0xffffffff)) { 2452 if (cdb_len == 16) { 2453 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; 2454 flagvals = cdb[1]; 2455 groupnum = cdb[14]; 2456 control = cdb[15]; 2457 } else { 2458 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; 2459 flagvals = cdb[1]; 2460 groupnum = cdb[10]; 2461 control = cdb[11]; 2462 } 2463 2464 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2465 2466 cdb[0] = opcode; 2467 cdb[1] = flagvals; 2468 cdb[6] = groupnum; 2469 cdb[9] = control; 2470 2471 /* Transfer length */ 2472 cdb[8] = (u8)(num_blocks & 0xff); 2473 cdb[7] = (u8)((num_blocks >> 8) & 0xff); 2474 2475 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ 2476 cdb_len = 10; 2477 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { 2478 /* Convert to 16 byte CDB for large LBA's */ 2479 switch (cdb_len) { 2480 case 6: 2481 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; 2482 control = cdb[5]; 2483 break; 2484 case 10: 2485 opcode = 2486 cdb[0] == READ_10 ? READ_16 : WRITE_16; 2487 flagvals = cdb[1]; 2488 groupnum = cdb[6]; 2489 control = cdb[9]; 2490 break; 2491 case 12: 2492 opcode = 2493 cdb[0] == READ_12 ? READ_16 : WRITE_16; 2494 flagvals = cdb[1]; 2495 groupnum = cdb[10]; 2496 control = cdb[11]; 2497 break; 2498 } 2499 2500 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2501 2502 cdb[0] = opcode; 2503 cdb[1] = flagvals; 2504 cdb[14] = groupnum; 2505 cdb[15] = control; 2506 2507 /* Transfer length */ 2508 cdb[13] = (u8)(num_blocks & 0xff); 2509 cdb[12] = (u8)((num_blocks >> 8) & 0xff); 2510 cdb[11] = (u8)((num_blocks >> 16) & 0xff); 2511 cdb[10] = (u8)((num_blocks >> 24) & 0xff); 2512 2513 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ 2514 cdb_len = 16; 2515 } 2516 2517 /* Normal case, just load LBA here */ 2518 switch (cdb_len) { 2519 case 6: 2520 { 2521 u8 val = cdb[1] & 0xE0; 2522 cdb[3] = (u8)(start_blk & 0xff); 2523 cdb[2] = (u8)((start_blk >> 8) & 0xff); 2524 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); 2525 break; 2526 } 2527 case 10: 2528 cdb[5] = (u8)(start_blk & 0xff); 2529 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2530 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2531 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2532 break; 2533 case 12: 2534 cdb[5] = (u8)(start_blk & 0xff); 2535 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2536 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2537 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2538 break; 2539 case 16: 2540 cdb[9] = (u8)(start_blk & 0xff); 2541 cdb[8] = (u8)((start_blk >> 8) & 0xff); 2542 cdb[7] = (u8)((start_blk >> 16) & 0xff); 2543 cdb[6] = (u8)((start_blk >> 24) & 0xff); 2544 cdb[5] = (u8)((start_blk >> 32) & 0xff); 2545 cdb[4] = (u8)((start_blk >> 40) & 0xff); 2546 cdb[3] = (u8)((start_blk >> 48) & 0xff); 2547 cdb[2] = (u8)((start_blk >> 56) & 0xff); 2548 break; 2549 } 2550 } 2551} 2552 2553/** 2554 * megasas_stream_detect - stream detection on read and and write IOs 2555 * @instance: Adapter soft state 2556 * @cmd: Command to be prepared 2557 * @io_info: IO Request info 2558 * 2559 */ 2560 2561/** stream detection on read and and write IOs */ 2562static void megasas_stream_detect(struct megasas_instance *instance, 2563 struct megasas_cmd_fusion *cmd, 2564 struct IO_REQUEST_INFO *io_info) 2565{ 2566 struct fusion_context *fusion = instance->ctrl_context; 2567 u32 device_id = io_info->ldTgtId; 2568 struct LD_STREAM_DETECT *current_ld_sd 2569 = fusion->stream_detect_by_ld[device_id]; 2570 u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; 2571 u32 shifted_values, unshifted_values; 2572 u32 index_value_mask, shifted_values_mask; 2573 int i; 2574 bool is_read_ahead = false; 2575 struct STREAM_DETECT *current_sd; 2576 /* find possible stream */ 2577 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { 2578 stream_num = (*track_stream >> 2579 (i * BITS_PER_INDEX_STREAM)) & 2580 STREAM_MASK; 2581 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2582 /* if we found a stream, update the raid 2583 * context and also update the mruBitMap 2584 */ 2585 /* boundary condition */ 2586 if ((current_sd->next_seq_lba) && 2587 (io_info->ldStartBlock >= current_sd->next_seq_lba) && 2588 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && 2589 (current_sd->is_read == io_info->isRead)) { 2590 2591 if ((io_info->ldStartBlock != current_sd->next_seq_lba) && 2592 ((!io_info->isRead) || (!is_read_ahead))) 2593 /* 2594 * Once the API is available we need to change this. 2595 * At this point we are not allowing any gap 2596 */ 2597 continue; 2598 2599 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); 2600 current_sd->next_seq_lba = 2601 io_info->ldStartBlock + io_info->numBlocks; 2602 /* 2603 * update the mruBitMap LRU 2604 */ 2605 shifted_values_mask = 2606 (1 << i * BITS_PER_INDEX_STREAM) - 1; 2607 shifted_values = ((*track_stream & shifted_values_mask) 2608 << BITS_PER_INDEX_STREAM); 2609 index_value_mask = 2610 STREAM_MASK << i * BITS_PER_INDEX_STREAM; 2611 unshifted_values = 2612 *track_stream & ~(shifted_values_mask | 2613 index_value_mask); 2614 *track_stream = 2615 unshifted_values | shifted_values | stream_num; 2616 return; 2617 } 2618 } 2619 /* 2620 * if we did not find any stream, create a new one 2621 * from the least recently used 2622 */ 2623 stream_num = (*track_stream >> 2624 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & 2625 STREAM_MASK; 2626 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2627 current_sd->is_read = io_info->isRead; 2628 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; 2629 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); 2630 return; 2631} 2632 2633/** 2634 * megasas_set_raidflag_cpu_affinity - This function sets the cpu 2635 * affinity (cpu of the controller) and raid_flags in the raid context 2636 * based on IO type. 2637 * 2638 * @fusion: Fusion context 2639 * @praid_context: IO RAID context 2640 * @raid: LD raid map 2641 * @fp_possible: Is fast path possible? 2642 * @is_read: Is read IO? 2643 * @scsi_buff_len: SCSI command buffer length 2644 * 2645 */ 2646static void 2647megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion, 2648 union RAID_CONTEXT_UNION *praid_context, 2649 struct MR_LD_RAID *raid, bool fp_possible, 2650 u8 is_read, u32 scsi_buff_len) 2651{ 2652 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2653 struct RAID_CONTEXT_G35 *rctx_g35; 2654 2655 rctx_g35 = &praid_context->raid_context_g35; 2656 if (fp_possible) { 2657 if (is_read) { 2658 if ((raid->cpuAffinity.pdRead.cpu0) && 2659 (raid->cpuAffinity.pdRead.cpu1)) 2660 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2661 else if (raid->cpuAffinity.pdRead.cpu1) 2662 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2663 } else { 2664 if ((raid->cpuAffinity.pdWrite.cpu0) && 2665 (raid->cpuAffinity.pdWrite.cpu1)) 2666 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2667 else if (raid->cpuAffinity.pdWrite.cpu1) 2668 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2669 /* Fast path cache by pass capable R0/R1 VD */ 2670 if ((raid->level <= 1) && 2671 (raid->capability.fp_cache_bypass_capable)) { 2672 rctx_g35->routing_flags |= 2673 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); 2674 rctx_g35->raid_flags = 2675 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS 2676 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2677 } 2678 } 2679 } else { 2680 if (is_read) { 2681 if ((raid->cpuAffinity.ldRead.cpu0) && 2682 (raid->cpuAffinity.ldRead.cpu1)) 2683 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2684 else if (raid->cpuAffinity.ldRead.cpu1) 2685 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2686 } else { 2687 if ((raid->cpuAffinity.ldWrite.cpu0) && 2688 (raid->cpuAffinity.ldWrite.cpu1)) 2689 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2690 else if (raid->cpuAffinity.ldWrite.cpu1) 2691 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2692 2693 if (is_stream_detected(rctx_g35) && 2694 ((raid->level == 5) || (raid->level == 6)) && 2695 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && 2696 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) 2697 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2698 } 2699 } 2700 2701 rctx_g35->routing_flags |= 2702 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2703 2704 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2705 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. 2706 * IO Subtype is not bitmap. 2707 */ 2708 if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) && 2709 (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) { 2710 praid_context->raid_context_g35.raid_flags = 2711 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2712 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2713 } 2714} 2715 2716/** 2717 * megasas_build_ldio_fusion - Prepares IOs to devices 2718 * @instance: Adapter soft state 2719 * @scp: SCSI command 2720 * @cmd: Command to be prepared 2721 * 2722 * Prepares the io_request and chain elements (sg_frame) for IO 2723 * The IO can be for PD (Fast Path) or LD 2724 */ 2725static void 2726megasas_build_ldio_fusion(struct megasas_instance *instance, 2727 struct scsi_cmnd *scp, 2728 struct megasas_cmd_fusion *cmd) 2729{ 2730 bool fp_possible; 2731 u16 ld; 2732 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; 2733 u32 scsi_buff_len; 2734 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2735 struct IO_REQUEST_INFO io_info; 2736 struct fusion_context *fusion; 2737 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2738 u8 *raidLUN; 2739 unsigned long spinlock_flags; 2740 struct MR_LD_RAID *raid = NULL; 2741 struct MR_PRIV_DEVICE *mrdev_priv; 2742 struct RAID_CONTEXT *rctx; 2743 struct RAID_CONTEXT_G35 *rctx_g35; 2744 2745 device_id = MEGASAS_DEV_INDEX(scp); 2746 2747 fusion = instance->ctrl_context; 2748 2749 io_request = cmd->io_request; 2750 rctx = &io_request->RaidContext.raid_context; 2751 rctx_g35 = &io_request->RaidContext.raid_context_g35; 2752 2753 rctx->virtual_disk_tgt_id = cpu_to_le16(device_id); 2754 rctx->status = 0; 2755 rctx->ex_status = 0; 2756 2757 start_lba_lo = 0; 2758 start_lba_hi = 0; 2759 fp_possible = false; 2760 2761 /* 2762 * 6-byte READ(0x08) or WRITE(0x0A) cdb 2763 */ 2764 if (scp->cmd_len == 6) { 2765 datalength = (u32) scp->cmnd[4]; 2766 start_lba_lo = ((u32) scp->cmnd[1] << 16) | 2767 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 2768 2769 start_lba_lo &= 0x1FFFFF; 2770 } 2771 2772 /* 2773 * 10-byte READ(0x28) or WRITE(0x2A) cdb 2774 */ 2775 else if (scp->cmd_len == 10) { 2776 datalength = (u32) scp->cmnd[8] | 2777 ((u32) scp->cmnd[7] << 8); 2778 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2779 ((u32) scp->cmnd[3] << 16) | 2780 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2781 } 2782 2783 /* 2784 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 2785 */ 2786 else if (scp->cmd_len == 12) { 2787 datalength = ((u32) scp->cmnd[6] << 24) | 2788 ((u32) scp->cmnd[7] << 16) | 2789 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2790 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2791 ((u32) scp->cmnd[3] << 16) | 2792 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2793 } 2794 2795 /* 2796 * 16-byte READ(0x88) or WRITE(0x8A) cdb 2797 */ 2798 else if (scp->cmd_len == 16) { 2799 datalength = ((u32) scp->cmnd[10] << 24) | 2800 ((u32) scp->cmnd[11] << 16) | 2801 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 2802 start_lba_lo = ((u32) scp->cmnd[6] << 24) | 2803 ((u32) scp->cmnd[7] << 16) | 2804 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2805 2806 start_lba_hi = ((u32) scp->cmnd[2] << 24) | 2807 ((u32) scp->cmnd[3] << 16) | 2808 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2809 } 2810 2811 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); 2812 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; 2813 io_info.numBlocks = datalength; 2814 io_info.ldTgtId = device_id; 2815 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2816 scsi_buff_len = scsi_bufflen(scp); 2817 io_request->DataLength = cpu_to_le32(scsi_buff_len); 2818 io_info.data_arms = 1; 2819 2820 if (scp->sc_data_direction == DMA_FROM_DEVICE) 2821 io_info.isRead = 1; 2822 2823 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2824 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2825 2826 if (ld < instance->fw_supported_vd_count) 2827 raid = MR_LdRaidGet(ld, local_map_ptr); 2828 2829 if (!raid || (!fusion->fast_path_io)) { 2830 rctx->reg_lock_flags = 0; 2831 fp_possible = false; 2832 } else { 2833 if (MR_BuildRaidContext(instance, &io_info, rctx, 2834 local_map_ptr, &raidLUN)) 2835 fp_possible = (io_info.fpOkForIo > 0) ? true : false; 2836 } 2837 2838 megasas_get_msix_index(instance, scp, cmd, io_info.data_arms); 2839 2840 if (instance->adapter_type >= VENTURA_SERIES) { 2841 /* FP for Optimal raid level 1. 2842 * All large RAID-1 writes (> 32 KiB, both WT and WB modes) 2843 * are built by the driver as LD I/Os. 2844 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os 2845 * (there is never a reason to process these as buffered writes) 2846 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os 2847 * with the SLD bit asserted. 2848 */ 2849 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 2850 mrdev_priv = scp->device->hostdata; 2851 2852 if (atomic_inc_return(&instance->fw_outstanding) > 2853 (instance->host->can_queue)) { 2854 fp_possible = false; 2855 atomic_dec(&instance->fw_outstanding); 2856 } else if (fusion->pcie_bw_limitation && 2857 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || 2858 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) { 2859 fp_possible = false; 2860 atomic_dec(&instance->fw_outstanding); 2861 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2862 atomic_set(&mrdev_priv->r1_ldio_hint, 2863 instance->r1_ldio_hint_default); 2864 } 2865 } 2866 2867 if (!fp_possible || 2868 (io_info.isRead && io_info.ra_capable)) { 2869 spin_lock_irqsave(&instance->stream_lock, 2870 spinlock_flags); 2871 megasas_stream_detect(instance, cmd, &io_info); 2872 spin_unlock_irqrestore(&instance->stream_lock, 2873 spinlock_flags); 2874 /* In ventura if stream detected for a read and it is 2875 * read ahead capable make this IO as LDIO 2876 */ 2877 if (is_stream_detected(rctx_g35)) 2878 fp_possible = false; 2879 } 2880 2881 /* If raid is NULL, set CPU affinity to default CPU0 */ 2882 if (raid) 2883 megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext, 2884 raid, fp_possible, io_info.isRead, 2885 scsi_buff_len); 2886 else 2887 rctx_g35->routing_flags |= 2888 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2889 } 2890 2891 if (fp_possible) { 2892 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, 2893 local_map_ptr, start_lba_lo); 2894 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2895 cmd->request_desc->SCSIIO.RequestFlags = 2896 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO 2897 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2898 if (instance->adapter_type == INVADER_SERIES) { 2899 rctx->type = MPI2_TYPE_CUDA; 2900 rctx->nseg = 0x1; 2901 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2902 rctx->reg_lock_flags |= 2903 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | 2904 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2905 } else if (instance->adapter_type >= VENTURA_SERIES) { 2906 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT); 2907 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2908 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2909 io_request->IoFlags |= 2910 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2911 } 2912 if (fusion->load_balance_info && 2913 (fusion->load_balance_info[device_id].loadBalanceFlag) && 2914 (io_info.isRead)) { 2915 io_info.devHandle = 2916 get_updated_dev_handle(instance, 2917 &fusion->load_balance_info[device_id], 2918 &io_info, local_map_ptr); 2919 megasas_priv(scp)->status |= MEGASAS_LOAD_BALANCE_FLAG; 2920 cmd->pd_r1_lb = io_info.pd_after_lb; 2921 if (instance->adapter_type >= VENTURA_SERIES) 2922 rctx_g35->span_arm = io_info.span_arm; 2923 else 2924 rctx->span_arm = io_info.span_arm; 2925 2926 } else 2927 megasas_priv(scp)->status &= ~MEGASAS_LOAD_BALANCE_FLAG; 2928 2929 if (instance->adapter_type >= VENTURA_SERIES) 2930 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; 2931 else 2932 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2933 2934 if ((raidLUN[0] == 1) && 2935 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { 2936 instance->dev_handle = !(instance->dev_handle); 2937 io_info.devHandle = 2938 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; 2939 } 2940 2941 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; 2942 io_request->DevHandle = io_info.devHandle; 2943 cmd->pd_interface = io_info.pd_interface; 2944 /* populate the LUN field */ 2945 memcpy(io_request->LUN, raidLUN, 8); 2946 } else { 2947 rctx->timeout_value = 2948 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); 2949 cmd->request_desc->SCSIIO.RequestFlags = 2950 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 2951 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2952 if (instance->adapter_type == INVADER_SERIES) { 2953 if (io_info.do_fp_rlbypass || 2954 (rctx->reg_lock_flags == REGION_TYPE_UNUSED)) 2955 cmd->request_desc->SCSIIO.RequestFlags = 2956 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2957 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2958 rctx->type = MPI2_TYPE_CUDA; 2959 rctx->reg_lock_flags |= 2960 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | 2961 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2962 rctx->nseg = 0x1; 2963 } else if (instance->adapter_type >= VENTURA_SERIES) { 2964 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2965 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT); 2966 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2967 } 2968 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2969 io_request->DevHandle = cpu_to_le16(device_id); 2970 2971 } /* Not FP */ 2972} 2973 2974/** 2975 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk 2976 * @instance: Adapter soft state 2977 * @scmd: SCSI command 2978 * @cmd: Command to be prepared 2979 * 2980 * Prepares the io_request frame for non-rw io cmds for vd. 2981 */ 2982static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, 2983 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) 2984{ 2985 u32 device_id; 2986 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2987 u16 ld; 2988 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2989 struct fusion_context *fusion = instance->ctrl_context; 2990 u8 span, physArm; 2991 __le16 devHandle; 2992 u32 arRef, pd; 2993 struct MR_LD_RAID *raid; 2994 struct RAID_CONTEXT *pRAID_Context; 2995 u8 fp_possible = 1; 2996 2997 io_request = cmd->io_request; 2998 device_id = MEGASAS_DEV_INDEX(scmd); 2999 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 3000 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 3001 /* get RAID_Context pointer */ 3002 pRAID_Context = &io_request->RaidContext.raid_context; 3003 /* Check with FW team */ 3004 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3005 pRAID_Context->reg_lock_row_lba = 0; 3006 pRAID_Context->reg_lock_length = 0; 3007 3008 if (fusion->fast_path_io && ( 3009 device_id < instance->fw_supported_vd_count)) { 3010 3011 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 3012 if (ld >= instance->fw_supported_vd_count - 1) 3013 fp_possible = 0; 3014 else { 3015 raid = MR_LdRaidGet(ld, local_map_ptr); 3016 if (!(raid->capability.fpNonRWCapable)) 3017 fp_possible = 0; 3018 } 3019 } else 3020 fp_possible = 0; 3021 3022 if (!fp_possible) { 3023 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 3024 io_request->DevHandle = cpu_to_le16(device_id); 3025 io_request->LUN[1] = scmd->device->lun; 3026 pRAID_Context->timeout_value = 3027 cpu_to_le16(scsi_cmd_to_rq(scmd)->timeout / HZ); 3028 cmd->request_desc->SCSIIO.RequestFlags = 3029 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3030 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3031 } else { 3032 3033 /* set RAID context values */ 3034 pRAID_Context->config_seq_num = raid->seqNum; 3035 if (instance->adapter_type < VENTURA_SERIES) 3036 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; 3037 pRAID_Context->timeout_value = 3038 cpu_to_le16(raid->fpIoTimeoutForLd); 3039 3040 /* get the DevHandle for the PD (since this is 3041 fpNonRWCapable, this is a single disk RAID0) */ 3042 span = physArm = 0; 3043 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); 3044 pd = MR_ArPdGet(arRef, physArm, local_map_ptr); 3045 devHandle = MR_PdDevHandleGet(pd, local_map_ptr); 3046 3047 /* build request descriptor */ 3048 cmd->request_desc->SCSIIO.RequestFlags = 3049 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3050 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3051 cmd->request_desc->SCSIIO.DevHandle = devHandle; 3052 3053 /* populate the LUN field */ 3054 memcpy(io_request->LUN, raid->LUN, 8); 3055 3056 /* build the raidScsiIO structure */ 3057 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3058 io_request->DevHandle = devHandle; 3059 } 3060} 3061 3062/** 3063 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd 3064 * @instance: Adapter soft state 3065 * @scmd: SCSI command 3066 * @cmd: Command to be prepared 3067 * @fp_possible: parameter to detect fast path or firmware path io. 3068 * 3069 * Prepares the io_request frame for rw/non-rw io cmds for syspds 3070 */ 3071static void 3072megasas_build_syspd_fusion(struct megasas_instance *instance, 3073 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, 3074 bool fp_possible) 3075{ 3076 u32 device_id; 3077 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 3078 u16 pd_index = 0; 3079 u16 os_timeout_value; 3080 u16 timeout_limit; 3081 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 3082 struct RAID_CONTEXT *pRAID_Context; 3083 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 3084 struct MR_PRIV_DEVICE *mr_device_priv_data; 3085 struct fusion_context *fusion = instance->ctrl_context; 3086 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; 3087 3088 device_id = MEGASAS_DEV_INDEX(scmd); 3089 pd_index = MEGASAS_PD_INDEX(scmd); 3090 os_timeout_value = scsi_cmd_to_rq(scmd)->timeout / HZ; 3091 mr_device_priv_data = scmd->device->hostdata; 3092 cmd->pd_interface = mr_device_priv_data->interface_type; 3093 3094 io_request = cmd->io_request; 3095 /* get RAID_Context pointer */ 3096 pRAID_Context = &io_request->RaidContext.raid_context; 3097 pRAID_Context->reg_lock_flags = 0; 3098 pRAID_Context->reg_lock_row_lba = 0; 3099 pRAID_Context->reg_lock_length = 0; 3100 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 3101 io_request->LUN[1] = scmd->device->lun; 3102 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD 3103 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; 3104 3105 /* If FW supports PD sequence number */ 3106 if (instance->support_seqnum_jbod_fp) { 3107 if (instance->use_seqnum_jbod_fp && 3108 instance->pd_list[pd_index].driveType == TYPE_DISK) { 3109 3110 /* More than 256 PD/JBOD support for Ventura */ 3111 if (instance->support_morethan256jbod) 3112 pRAID_Context->virtual_disk_tgt_id = 3113 pd_sync->seq[pd_index].pd_target_id; 3114 else 3115 pRAID_Context->virtual_disk_tgt_id = 3116 cpu_to_le16(device_id + 3117 (MAX_PHYSICAL_DEVICES - 1)); 3118 pRAID_Context->config_seq_num = 3119 pd_sync->seq[pd_index].seqNum; 3120 io_request->DevHandle = 3121 pd_sync->seq[pd_index].devHandle; 3122 if (instance->adapter_type >= VENTURA_SERIES) { 3123 io_request->RaidContext.raid_context_g35.routing_flags |= 3124 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 3125 io_request->RaidContext.raid_context_g35.nseg_type |= 3126 (1 << RAID_CONTEXT_NSEG_SHIFT); 3127 io_request->RaidContext.raid_context_g35.nseg_type |= 3128 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 3129 } else { 3130 pRAID_Context->type = MPI2_TYPE_CUDA; 3131 pRAID_Context->nseg = 0x1; 3132 pRAID_Context->reg_lock_flags |= 3133 (MR_RL_FLAGS_SEQ_NUM_ENABLE | 3134 MR_RL_FLAGS_GRANT_DESTINATION_CUDA); 3135 } 3136 } else { 3137 pRAID_Context->virtual_disk_tgt_id = 3138 cpu_to_le16(device_id + 3139 (MAX_PHYSICAL_DEVICES - 1)); 3140 pRAID_Context->config_seq_num = 0; 3141 io_request->DevHandle = cpu_to_le16(0xFFFF); 3142 } 3143 } else { 3144 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3145 pRAID_Context->config_seq_num = 0; 3146 3147 if (fusion->fast_path_io) { 3148 local_map_ptr = 3149 fusion->ld_drv_map[(instance->map_id & 1)]; 3150 io_request->DevHandle = 3151 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; 3152 } else { 3153 io_request->DevHandle = cpu_to_le16(0xFFFF); 3154 } 3155 } 3156 3157 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; 3158 3159 megasas_get_msix_index(instance, scmd, cmd, 1); 3160 3161 if (!fp_possible) { 3162 /* system pd firmware path */ 3163 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 3164 cmd->request_desc->SCSIIO.RequestFlags = 3165 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3166 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3167 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); 3168 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3169 } else { 3170 if (os_timeout_value) 3171 os_timeout_value++; 3172 3173 /* system pd Fast Path */ 3174 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3175 timeout_limit = (scmd->device->type == TYPE_DISK) ? 3176 255 : 0xFFFF; 3177 pRAID_Context->timeout_value = 3178 cpu_to_le16((os_timeout_value > timeout_limit) ? 3179 timeout_limit : os_timeout_value); 3180 if (instance->adapter_type >= INVADER_SERIES) 3181 io_request->IoFlags |= 3182 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 3183 3184 cmd->request_desc->SCSIIO.RequestFlags = 3185 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3186 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3187 } 3188} 3189 3190/** 3191 * megasas_build_io_fusion - Prepares IOs to devices 3192 * @instance: Adapter soft state 3193 * @scp: SCSI command 3194 * @cmd: Command to be prepared 3195 * 3196 * Invokes helper functions to prepare request frames 3197 * and sets flags appropriate for IO/Non-IO cmd 3198 */ 3199static int 3200megasas_build_io_fusion(struct megasas_instance *instance, 3201 struct scsi_cmnd *scp, 3202 struct megasas_cmd_fusion *cmd) 3203{ 3204 int sge_count; 3205 u16 pd_index = 0; 3206 u8 drive_type = 0; 3207 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; 3208 struct MR_PRIV_DEVICE *mr_device_priv_data; 3209 mr_device_priv_data = scp->device->hostdata; 3210 3211 /* Zero out some fields so they don't get reused */ 3212 memset(io_request->LUN, 0x0, 8); 3213 io_request->CDB.EEDP32.PrimaryReferenceTag = 0; 3214 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; 3215 io_request->EEDPFlags = 0; 3216 io_request->Control = 0; 3217 io_request->EEDPBlockSize = 0; 3218 io_request->ChainOffset = 0; 3219 io_request->RaidContext.raid_context.raid_flags = 0; 3220 io_request->RaidContext.raid_context.type = 0; 3221 io_request->RaidContext.raid_context.nseg = 0; 3222 3223 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); 3224 /* 3225 * Just the CDB length,rest of the Flags are zero 3226 * This will be modified for FP in build_ldio_fusion 3227 */ 3228 io_request->IoFlags = cpu_to_le16(scp->cmd_len); 3229 3230 switch (megasas_cmd_type(scp)) { 3231 case READ_WRITE_LDIO: 3232 megasas_build_ldio_fusion(instance, scp, cmd); 3233 break; 3234 case NON_READ_WRITE_LDIO: 3235 megasas_build_ld_nonrw_fusion(instance, scp, cmd); 3236 break; 3237 case READ_WRITE_SYSPDIO: 3238 megasas_build_syspd_fusion(instance, scp, cmd, true); 3239 break; 3240 case NON_READ_WRITE_SYSPDIO: 3241 pd_index = MEGASAS_PD_INDEX(scp); 3242 drive_type = instance->pd_list[pd_index].driveType; 3243 if ((instance->secure_jbod_support || 3244 mr_device_priv_data->is_tm_capable) || 3245 (instance->adapter_type >= VENTURA_SERIES && 3246 drive_type == TYPE_ENCLOSURE)) 3247 megasas_build_syspd_fusion(instance, scp, cmd, false); 3248 else 3249 megasas_build_syspd_fusion(instance, scp, cmd, true); 3250 break; 3251 default: 3252 break; 3253 } 3254 3255 /* 3256 * Construct SGL 3257 */ 3258 3259 sge_count = megasas_make_sgl(instance, scp, cmd); 3260 3261 if (sge_count > instance->max_num_sge || (sge_count < 0)) { 3262 dev_err(&instance->pdev->dev, 3263 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", 3264 __func__, __LINE__, sge_count, instance->max_num_sge); 3265 return 1; 3266 } 3267 3268 if (instance->adapter_type >= VENTURA_SERIES) { 3269 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); 3270 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); 3271 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); 3272 } else { 3273 /* numSGE store lower 8 bit of sge_count. 3274 * numSGEExt store higher 8 bit of sge_count 3275 */ 3276 io_request->RaidContext.raid_context.num_sge = sge_count; 3277 io_request->RaidContext.raid_context.num_sge_ext = 3278 (u8)(sge_count >> 8); 3279 } 3280 3281 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); 3282 3283 if (scp->sc_data_direction == DMA_TO_DEVICE) 3284 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); 3285 else if (scp->sc_data_direction == DMA_FROM_DEVICE) 3286 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); 3287 3288 io_request->SGLOffset0 = 3289 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; 3290 3291 io_request->SenseBufferLowAddress = 3292 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 3293 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 3294 3295 cmd->scmd = scp; 3296 megasas_priv(scp)->cmd_priv = cmd; 3297 3298 return 0; 3299} 3300 3301static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3302megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) 3303{ 3304 u8 *p; 3305 struct fusion_context *fusion; 3306 3307 fusion = instance->ctrl_context; 3308 p = fusion->req_frames_desc + 3309 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; 3310 3311 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; 3312} 3313 3314 3315/* megasas_prepate_secondRaid1_IO 3316 * It prepares the raid 1 second IO 3317 */ 3318static void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, 3319 struct megasas_cmd_fusion *cmd, 3320 struct megasas_cmd_fusion *r1_cmd) 3321{ 3322 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; 3323 struct fusion_context *fusion; 3324 fusion = instance->ctrl_context; 3325 req_desc = cmd->request_desc; 3326 /* copy the io request frame as well as 8 SGEs data for r1 command*/ 3327 memcpy(r1_cmd->io_request, cmd->io_request, 3328 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); 3329 memcpy(r1_cmd->io_request->SGLs, cmd->io_request->SGLs, 3330 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); 3331 /*sense buffer is different for r1 command*/ 3332 r1_cmd->io_request->SenseBufferLowAddress = 3333 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr)); 3334 r1_cmd->scmd = cmd->scmd; 3335 req_desc2 = megasas_get_request_descriptor(instance, 3336 (r1_cmd->index - 1)); 3337 req_desc2->Words = 0; 3338 r1_cmd->request_desc = req_desc2; 3339 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); 3340 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; 3341 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; 3342 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; 3343 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; 3344 cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid = 3345 cpu_to_le16(r1_cmd->index); 3346 r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid = 3347 cpu_to_le16(cmd->index); 3348 /*MSIxIndex of both commands request descriptors should be same*/ 3349 r1_cmd->request_desc->SCSIIO.MSIxIndex = 3350 cmd->request_desc->SCSIIO.MSIxIndex; 3351 /*span arm is different for r1 cmd*/ 3352 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = 3353 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; 3354} 3355 3356/** 3357 * megasas_build_and_issue_cmd_fusion -Main routine for building and 3358 * issuing non IOCTL cmd 3359 * @instance: Adapter soft state 3360 * @scmd: pointer to scsi cmd from OS 3361 */ 3362static u32 3363megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, 3364 struct scsi_cmnd *scmd) 3365{ 3366 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL; 3367 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3368 u32 index; 3369 3370 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && 3371 instance->ldio_threshold && 3372 (atomic_inc_return(&instance->ldio_outstanding) > 3373 instance->ldio_threshold)) { 3374 atomic_dec(&instance->ldio_outstanding); 3375 return SCSI_MLQUEUE_DEVICE_BUSY; 3376 } 3377 3378 if (atomic_inc_return(&instance->fw_outstanding) > 3379 instance->host->can_queue) { 3380 atomic_dec(&instance->fw_outstanding); 3381 return SCSI_MLQUEUE_HOST_BUSY; 3382 } 3383 3384 cmd = megasas_get_cmd_fusion(instance, scsi_cmd_to_rq(scmd)->tag); 3385 3386 if (!cmd) { 3387 atomic_dec(&instance->fw_outstanding); 3388 return SCSI_MLQUEUE_HOST_BUSY; 3389 } 3390 3391 index = cmd->index; 3392 3393 req_desc = megasas_get_request_descriptor(instance, index-1); 3394 3395 req_desc->Words = 0; 3396 cmd->request_desc = req_desc; 3397 3398 if (megasas_build_io_fusion(instance, scmd, cmd)) { 3399 megasas_return_cmd_fusion(instance, cmd); 3400 dev_err(&instance->pdev->dev, "Error building command\n"); 3401 cmd->request_desc = NULL; 3402 atomic_dec(&instance->fw_outstanding); 3403 return SCSI_MLQUEUE_HOST_BUSY; 3404 } 3405 3406 req_desc = cmd->request_desc; 3407 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3408 3409 if (cmd->io_request->ChainOffset != 0 && 3410 cmd->io_request->ChainOffset != 0xF) 3411 dev_err(&instance->pdev->dev, "The chain offset value is not " 3412 "correct : %x\n", cmd->io_request->ChainOffset); 3413 /* 3414 * if it is raid 1/10 fp write capable. 3415 * try to get second command from pool and construct it. 3416 * From FW, it has confirmed that lba values of two PDs 3417 * corresponds to single R1/10 LD are always same 3418 * 3419 */ 3420 /* driver side count always should be less than max_fw_cmds 3421 * to get new command 3422 */ 3423 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 3424 r1_cmd = megasas_get_cmd_fusion(instance, 3425 scsi_cmd_to_rq(scmd)->tag + instance->max_fw_cmds); 3426 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); 3427 } 3428 3429 3430 /* 3431 * Issue the command to the FW 3432 */ 3433 3434 megasas_sdev_busy_inc(instance, scmd); 3435 megasas_fire_cmd_fusion(instance, req_desc); 3436 3437 if (r1_cmd) 3438 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); 3439 3440 3441 return 0; 3442} 3443 3444/** 3445 * megasas_complete_r1_command - 3446 * completes R1 FP write commands which has valid peer smid 3447 * @instance: Adapter soft state 3448 * @cmd: MPT command frame 3449 * 3450 */ 3451static inline void 3452megasas_complete_r1_command(struct megasas_instance *instance, 3453 struct megasas_cmd_fusion *cmd) 3454{ 3455 u8 *sense, status, ex_status; 3456 u32 data_length; 3457 u16 peer_smid; 3458 struct fusion_context *fusion; 3459 struct megasas_cmd_fusion *r1_cmd = NULL; 3460 struct scsi_cmnd *scmd_local = NULL; 3461 struct RAID_CONTEXT_G35 *rctx_g35; 3462 3463 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; 3464 fusion = instance->ctrl_context; 3465 peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid); 3466 3467 r1_cmd = fusion->cmd_list[peer_smid - 1]; 3468 scmd_local = cmd->scmd; 3469 status = rctx_g35->status; 3470 ex_status = rctx_g35->ex_status; 3471 data_length = cmd->io_request->DataLength; 3472 sense = cmd->sense; 3473 3474 cmd->cmd_completed = true; 3475 3476 /* Check if peer command is completed or not*/ 3477 if (r1_cmd->cmd_completed) { 3478 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; 3479 if (rctx_g35->status != MFI_STAT_OK) { 3480 status = rctx_g35->status; 3481 ex_status = rctx_g35->ex_status; 3482 data_length = r1_cmd->io_request->DataLength; 3483 sense = r1_cmd->sense; 3484 } 3485 3486 megasas_return_cmd_fusion(instance, r1_cmd); 3487 map_cmd_status(fusion, scmd_local, status, ex_status, 3488 le32_to_cpu(data_length), sense); 3489 if (instance->ldio_threshold && 3490 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 3491 atomic_dec(&instance->ldio_outstanding); 3492 megasas_priv(scmd_local)->cmd_priv = NULL; 3493 megasas_return_cmd_fusion(instance, cmd); 3494 scsi_dma_unmap(scmd_local); 3495 megasas_sdev_busy_dec(instance, scmd_local); 3496 scsi_done(scmd_local); 3497 } 3498} 3499 3500/** 3501 * access_irq_context: Access to reply processing 3502 * @irq_context: IRQ context 3503 * 3504 * Synchronize access to reply processing. 3505 * 3506 * Return: true on success, false on failure. 3507 */ 3508static inline 3509bool access_irq_context(struct megasas_irq_context *irq_context) 3510{ 3511 if (!irq_context) 3512 return true; 3513 3514 if (atomic_add_unless(&irq_context->in_used, 1, 1)) 3515 return true; 3516 3517 return false; 3518} 3519 3520/** 3521 * release_irq_context: Release reply processing 3522 * @irq_context: IRQ context 3523 * 3524 * Release access of reply processing. 3525 * 3526 * Return: Nothing. 3527 */ 3528static inline 3529void release_irq_context(struct megasas_irq_context *irq_context) 3530{ 3531 if (irq_context) 3532 atomic_dec(&irq_context->in_used); 3533} 3534 3535/** 3536 * complete_cmd_fusion - Completes command 3537 * @instance: Adapter soft state 3538 * @MSIxIndex: MSI number 3539 * @irq_context: IRQ context 3540 * 3541 * Completes all commands that is in reply descriptor queue 3542 */ 3543static int 3544complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, 3545 struct megasas_irq_context *irq_context) 3546{ 3547 union MPI2_REPLY_DESCRIPTORS_UNION *desc; 3548 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; 3549 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 3550 struct fusion_context *fusion; 3551 struct megasas_cmd *cmd_mfi; 3552 struct megasas_cmd_fusion *cmd_fusion; 3553 u16 smid, num_completed; 3554 u8 reply_descript_type, *sense, status, extStatus; 3555 u32 device_id, data_length; 3556 union desc_value d_val; 3557 struct LD_LOAD_BALANCE_INFO *lbinfo; 3558 int threshold_reply_count = 0; 3559 struct scsi_cmnd *scmd_local = NULL; 3560 struct MR_TASK_MANAGE_REQUEST *mr_tm_req; 3561 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; 3562 3563 fusion = instance->ctrl_context; 3564 3565 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3566 return IRQ_HANDLED; 3567 3568 if (!access_irq_context(irq_context)) 3569 return 0; 3570 3571 desc = fusion->reply_frames_desc[MSIxIndex] + 3572 fusion->last_reply_idx[MSIxIndex]; 3573 3574 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3575 3576 d_val.word = desc->Words; 3577 3578 reply_descript_type = reply_desc->ReplyFlags & 3579 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3580 3581 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) { 3582 release_irq_context(irq_context); 3583 return IRQ_NONE; 3584 } 3585 3586 num_completed = 0; 3587 3588 while (d_val.u.low != cpu_to_le32(UINT_MAX) && 3589 d_val.u.high != cpu_to_le32(UINT_MAX)) { 3590 3591 smid = le16_to_cpu(reply_desc->SMID); 3592 cmd_fusion = fusion->cmd_list[smid - 1]; 3593 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 3594 cmd_fusion->io_request; 3595 3596 scmd_local = cmd_fusion->scmd; 3597 status = scsi_io_req->RaidContext.raid_context.status; 3598 extStatus = scsi_io_req->RaidContext.raid_context.ex_status; 3599 sense = cmd_fusion->sense; 3600 data_length = scsi_io_req->DataLength; 3601 3602 switch (scsi_io_req->Function) { 3603 case MPI2_FUNCTION_SCSI_TASK_MGMT: 3604 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) 3605 cmd_fusion->io_request; 3606 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) 3607 &mr_tm_req->TmRequest; 3608 dev_dbg(&instance->pdev->dev, "TM completion:" 3609 "type: 0x%x TaskMID: 0x%x\n", 3610 mpi_tm_req->TaskType, mpi_tm_req->TaskMID); 3611 complete(&cmd_fusion->done); 3612 break; 3613 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ 3614 /* Update load balancing info */ 3615 if (fusion->load_balance_info && 3616 (megasas_priv(cmd_fusion->scmd)->status & 3617 MEGASAS_LOAD_BALANCE_FLAG)) { 3618 device_id = MEGASAS_DEV_INDEX(scmd_local); 3619 lbinfo = &fusion->load_balance_info[device_id]; 3620 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); 3621 megasas_priv(cmd_fusion->scmd)->status &= 3622 ~MEGASAS_LOAD_BALANCE_FLAG; 3623 } 3624 fallthrough; /* and complete IO */ 3625 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ 3626 atomic_dec(&instance->fw_outstanding); 3627 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { 3628 map_cmd_status(fusion, scmd_local, status, 3629 extStatus, le32_to_cpu(data_length), 3630 sense); 3631 if (instance->ldio_threshold && 3632 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) 3633 atomic_dec(&instance->ldio_outstanding); 3634 megasas_priv(scmd_local)->cmd_priv = NULL; 3635 megasas_return_cmd_fusion(instance, cmd_fusion); 3636 scsi_dma_unmap(scmd_local); 3637 megasas_sdev_busy_dec(instance, scmd_local); 3638 scsi_done(scmd_local); 3639 } else /* Optimal VD - R1 FP command completion. */ 3640 megasas_complete_r1_command(instance, cmd_fusion); 3641 break; 3642 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ 3643 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3644 /* Poll mode. Dummy free. 3645 * In case of Interrupt mode, caller has reverse check. 3646 */ 3647 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 3648 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 3649 megasas_return_cmd(instance, cmd_mfi); 3650 } else 3651 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3652 break; 3653 } 3654 3655 fusion->last_reply_idx[MSIxIndex]++; 3656 if (fusion->last_reply_idx[MSIxIndex] >= 3657 fusion->reply_q_depth) 3658 fusion->last_reply_idx[MSIxIndex] = 0; 3659 3660 desc->Words = cpu_to_le64(ULLONG_MAX); 3661 num_completed++; 3662 threshold_reply_count++; 3663 3664 /* Get the next reply descriptor */ 3665 if (!fusion->last_reply_idx[MSIxIndex]) 3666 desc = fusion->reply_frames_desc[MSIxIndex]; 3667 else 3668 desc++; 3669 3670 reply_desc = 3671 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3672 3673 d_val.word = desc->Words; 3674 3675 reply_descript_type = reply_desc->ReplyFlags & 3676 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3677 3678 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3679 break; 3680 /* 3681 * Write to reply post host index register after completing threshold 3682 * number of reply counts and still there are more replies in reply queue 3683 * pending to be completed 3684 */ 3685 if (threshold_reply_count >= instance->threshold_reply_count) { 3686 if (instance->msix_combined) 3687 writel(((MSIxIndex & 0x7) << 24) | 3688 fusion->last_reply_idx[MSIxIndex], 3689 instance->reply_post_host_index_addr[MSIxIndex/8]); 3690 else 3691 writel((MSIxIndex << 24) | 3692 fusion->last_reply_idx[MSIxIndex], 3693 instance->reply_post_host_index_addr[0]); 3694 threshold_reply_count = 0; 3695 if (irq_context) { 3696 if (!irq_context->irq_poll_scheduled) { 3697 irq_context->irq_poll_scheduled = true; 3698 irq_context->irq_line_enable = true; 3699 irq_poll_sched(&irq_context->irqpoll); 3700 } 3701 release_irq_context(irq_context); 3702 return num_completed; 3703 } 3704 } 3705 } 3706 3707 if (num_completed) { 3708 wmb(); 3709 if (instance->msix_combined) 3710 writel(((MSIxIndex & 0x7) << 24) | 3711 fusion->last_reply_idx[MSIxIndex], 3712 instance->reply_post_host_index_addr[MSIxIndex/8]); 3713 else 3714 writel((MSIxIndex << 24) | 3715 fusion->last_reply_idx[MSIxIndex], 3716 instance->reply_post_host_index_addr[0]); 3717 megasas_check_and_restore_queue_depth(instance); 3718 } 3719 3720 release_irq_context(irq_context); 3721 3722 return num_completed; 3723} 3724 3725int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) 3726{ 3727 3728 struct megasas_instance *instance; 3729 int num_entries = 0; 3730 struct fusion_context *fusion; 3731 3732 instance = (struct megasas_instance *)shost->hostdata; 3733 3734 fusion = instance->ctrl_context; 3735 3736 queue_num = queue_num + instance->low_latency_index_start; 3737 3738 if (!atomic_add_unless(&fusion->busy_mq_poll[queue_num], 1, 1)) 3739 return 0; 3740 3741 num_entries = complete_cmd_fusion(instance, queue_num, NULL); 3742 atomic_dec(&fusion->busy_mq_poll[queue_num]); 3743 3744 return num_entries; 3745} 3746 3747/** 3748 * megasas_enable_irq_poll() - enable irqpoll 3749 * @instance: Adapter soft state 3750 */ 3751static void megasas_enable_irq_poll(struct megasas_instance *instance) 3752{ 3753 u32 count, i; 3754 struct megasas_irq_context *irq_ctx; 3755 3756 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3757 3758 for (i = 0; i < count; i++) { 3759 irq_ctx = &instance->irq_context[i]; 3760 irq_poll_enable(&irq_ctx->irqpoll); 3761 } 3762} 3763 3764/** 3765 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter 3766 * @instance_addr: Adapter soft state address 3767 */ 3768static void megasas_sync_irqs(unsigned long instance_addr) 3769{ 3770 u32 count, i; 3771 struct megasas_instance *instance = 3772 (struct megasas_instance *)instance_addr; 3773 struct megasas_irq_context *irq_ctx; 3774 3775 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3776 3777 for (i = 0; i < count; i++) { 3778 synchronize_irq(pci_irq_vector(instance->pdev, i)); 3779 irq_ctx = &instance->irq_context[i]; 3780 irq_poll_disable(&irq_ctx->irqpoll); 3781 if (irq_ctx->irq_poll_scheduled) { 3782 irq_ctx->irq_poll_scheduled = false; 3783 enable_irq(irq_ctx->os_irq); 3784 complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3785 } 3786 } 3787} 3788 3789/** 3790 * megasas_irqpoll() - process a queue for completed reply descriptors 3791 * @irqpoll: IRQ poll structure associated with queue to poll. 3792 * @budget: Threshold of reply descriptors to process per poll. 3793 * 3794 * Return: The number of entries processed. 3795 */ 3796 3797int megasas_irqpoll(struct irq_poll *irqpoll, int budget) 3798{ 3799 struct megasas_irq_context *irq_ctx; 3800 struct megasas_instance *instance; 3801 int num_entries; 3802 3803 irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll); 3804 instance = irq_ctx->instance; 3805 3806 if (irq_ctx->irq_line_enable) { 3807 disable_irq_nosync(irq_ctx->os_irq); 3808 irq_ctx->irq_line_enable = false; 3809 } 3810 3811 num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3812 if (num_entries < budget) { 3813 irq_poll_complete(irqpoll); 3814 irq_ctx->irq_poll_scheduled = false; 3815 enable_irq(irq_ctx->os_irq); 3816 complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3817 } 3818 3819 return num_entries; 3820} 3821 3822/** 3823 * megasas_complete_cmd_dpc_fusion - Completes command 3824 * @instance_addr: Adapter soft state address 3825 * 3826 * Tasklet to complete cmds 3827 */ 3828static void 3829megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) 3830{ 3831 struct megasas_instance *instance = 3832 (struct megasas_instance *)instance_addr; 3833 struct megasas_irq_context *irq_ctx = NULL; 3834 u32 count, MSIxIndex; 3835 3836 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3837 3838 /* If we have already declared adapter dead, donot complete cmds */ 3839 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3840 return; 3841 3842 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) { 3843 irq_ctx = &instance->irq_context[MSIxIndex]; 3844 complete_cmd_fusion(instance, MSIxIndex, irq_ctx); 3845 } 3846} 3847 3848/** 3849 * megasas_isr_fusion - isr entry point 3850 * @irq: IRQ number 3851 * @devp: IRQ context 3852 */ 3853static irqreturn_t megasas_isr_fusion(int irq, void *devp) 3854{ 3855 struct megasas_irq_context *irq_context = devp; 3856 struct megasas_instance *instance = irq_context->instance; 3857 u32 mfiStatus; 3858 3859 if (instance->mask_interrupts) 3860 return IRQ_NONE; 3861 3862 if (irq_context->irq_poll_scheduled) 3863 return IRQ_HANDLED; 3864 3865 if (!instance->msix_vectors) { 3866 mfiStatus = instance->instancet->clear_intr(instance); 3867 if (!mfiStatus) 3868 return IRQ_NONE; 3869 } 3870 3871 /* If we are resetting, bail */ 3872 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { 3873 instance->instancet->clear_intr(instance); 3874 return IRQ_HANDLED; 3875 } 3876 3877 return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context) 3878 ? IRQ_HANDLED : IRQ_NONE; 3879} 3880 3881/** 3882 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru 3883 * @instance: Adapter soft state 3884 * @mfi_cmd: megasas_cmd pointer 3885 * 3886 */ 3887static void 3888build_mpt_mfi_pass_thru(struct megasas_instance *instance, 3889 struct megasas_cmd *mfi_cmd) 3890{ 3891 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; 3892 struct MPI2_RAID_SCSI_IO_REQUEST *io_req; 3893 struct megasas_cmd_fusion *cmd; 3894 struct fusion_context *fusion; 3895 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; 3896 3897 fusion = instance->ctrl_context; 3898 3899 cmd = megasas_get_cmd_fusion(instance, 3900 instance->max_scsi_cmds + mfi_cmd->index); 3901 3902 /* Save the smid. To be used for returning the cmd */ 3903 mfi_cmd->context.smid = cmd->index; 3904 3905 /* 3906 * For cmds where the flag is set, store the flag and check 3907 * on completion. For cmds with this flag, don't call 3908 * megasas_complete_cmd 3909 */ 3910 3911 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) 3912 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; 3913 3914 io_req = cmd->io_request; 3915 3916 if (instance->adapter_type >= INVADER_SERIES) { 3917 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = 3918 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; 3919 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 3920 sgl_ptr_end->Flags = 0; 3921 } 3922 3923 mpi25_ieee_chain = 3924 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; 3925 3926 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; 3927 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, 3928 SGL) / 4; 3929 io_req->ChainOffset = fusion->chain_offset_mfi_pthru; 3930 3931 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); 3932 3933 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 3934 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; 3935 3936 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size); 3937} 3938 3939/** 3940 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd 3941 * @instance: Adapter soft state 3942 * @cmd: mfi cmd to build 3943 * 3944 */ 3945static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3946build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 3947{ 3948 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; 3949 u16 index; 3950 3951 build_mpt_mfi_pass_thru(instance, cmd); 3952 index = cmd->context.smid; 3953 3954 req_desc = megasas_get_request_descriptor(instance, index - 1); 3955 3956 req_desc->Words = 0; 3957 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3958 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3959 3960 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3961 3962 return req_desc; 3963} 3964 3965/** 3966 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd 3967 * @instance: Adapter soft state 3968 * @cmd: mfi cmd pointer 3969 * 3970 */ 3971static void 3972megasas_issue_dcmd_fusion(struct megasas_instance *instance, 3973 struct megasas_cmd *cmd) 3974{ 3975 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3976 3977 req_desc = build_mpt_cmd(instance, cmd); 3978 3979 megasas_fire_cmd_fusion(instance, req_desc); 3980 return; 3981} 3982 3983/** 3984 * megasas_release_fusion - Reverses the FW initialization 3985 * @instance: Adapter soft state 3986 */ 3987void 3988megasas_release_fusion(struct megasas_instance *instance) 3989{ 3990 megasas_free_ioc_init_cmd(instance); 3991 megasas_free_cmds(instance); 3992 megasas_free_cmds_fusion(instance); 3993 3994 iounmap(instance->reg_set); 3995 3996 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 3997} 3998 3999/** 4000 * megasas_read_fw_status_reg_fusion - returns the current FW status value 4001 * @instance: Adapter soft state 4002 */ 4003static u32 4004megasas_read_fw_status_reg_fusion(struct megasas_instance *instance) 4005{ 4006 return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0); 4007} 4008 4009/** 4010 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware 4011 * @instance: Controller's soft instance 4012 * @return: Number of allocated host crash buffers 4013 */ 4014static void 4015megasas_alloc_host_crash_buffer(struct megasas_instance *instance) 4016{ 4017 unsigned int i; 4018 4019 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { 4020 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); 4021 if (!instance->crash_buf[i]) { 4022 dev_info(&instance->pdev->dev, "Firmware crash dump " 4023 "memory allocation failed at index %d\n", i); 4024 break; 4025 } 4026 } 4027 instance->drv_buf_alloc = i; 4028} 4029 4030/** 4031 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware 4032 * @instance: Controller's soft instance 4033 */ 4034void 4035megasas_free_host_crash_buffer(struct megasas_instance *instance) 4036{ 4037 unsigned int i; 4038 for (i = 0; i < instance->drv_buf_alloc; i++) { 4039 vfree(instance->crash_buf[i]); 4040 } 4041 instance->drv_buf_index = 0; 4042 instance->drv_buf_alloc = 0; 4043 instance->fw_crash_state = UNAVAILABLE; 4044 instance->fw_crash_buffer_size = 0; 4045} 4046 4047/** 4048 * megasas_adp_reset_fusion - For controller reset 4049 * @instance: Controller's soft instance 4050 * @regs: MFI register set 4051 */ 4052static int 4053megasas_adp_reset_fusion(struct megasas_instance *instance, 4054 struct megasas_register_set __iomem *regs) 4055{ 4056 u32 host_diag, abs_state, retry; 4057 4058 /* Now try to reset the chip */ 4059 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4060 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4061 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4062 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4063 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4064 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4065 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4066 4067 /* Check that the diag write enable (DRWE) bit is on */ 4068 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag); 4069 retry = 0; 4070 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { 4071 msleep(100); 4072 host_diag = megasas_readl(instance, 4073 &instance->reg_set->fusion_host_diag); 4074 if (retry++ == 100) { 4075 dev_warn(&instance->pdev->dev, 4076 "Host diag unlock failed from %s %d\n", 4077 __func__, __LINE__); 4078 break; 4079 } 4080 } 4081 if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) 4082 return -1; 4083 4084 /* Send chip reset command */ 4085 writel(host_diag | HOST_DIAG_RESET_ADAPTER, 4086 &instance->reg_set->fusion_host_diag); 4087 msleep(3000); 4088 4089 /* Make sure reset adapter bit is cleared */ 4090 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag); 4091 retry = 0; 4092 while (host_diag & HOST_DIAG_RESET_ADAPTER) { 4093 msleep(100); 4094 host_diag = megasas_readl(instance, 4095 &instance->reg_set->fusion_host_diag); 4096 if (retry++ == 1000) { 4097 dev_warn(&instance->pdev->dev, 4098 "Diag reset adapter never cleared %s %d\n", 4099 __func__, __LINE__); 4100 break; 4101 } 4102 } 4103 if (host_diag & HOST_DIAG_RESET_ADAPTER) 4104 return -1; 4105 4106 abs_state = instance->instancet->read_fw_status_reg(instance) 4107 & MFI_STATE_MASK; 4108 retry = 0; 4109 4110 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { 4111 msleep(100); 4112 abs_state = instance->instancet-> 4113 read_fw_status_reg(instance) & MFI_STATE_MASK; 4114 } 4115 if (abs_state <= MFI_STATE_FW_INIT) { 4116 dev_warn(&instance->pdev->dev, 4117 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", 4118 abs_state, __func__, __LINE__); 4119 return -1; 4120 } 4121 4122 return 0; 4123} 4124 4125/** 4126 * megasas_check_reset_fusion - For controller reset check 4127 * @instance: Controller's soft instance 4128 * @regs: MFI register set 4129 */ 4130static int 4131megasas_check_reset_fusion(struct megasas_instance *instance, 4132 struct megasas_register_set __iomem *regs) 4133{ 4134 return 0; 4135} 4136 4137/** 4138 * megasas_trigger_snap_dump - Trigger snap dump in FW 4139 * @instance: Soft instance of adapter 4140 */ 4141static inline void megasas_trigger_snap_dump(struct megasas_instance *instance) 4142{ 4143 int j; 4144 u32 fw_state, abs_state; 4145 4146 if (!instance->disableOnlineCtrlReset) { 4147 dev_info(&instance->pdev->dev, "Trigger snap dump\n"); 4148 writel(MFI_ADP_TRIGGER_SNAP_DUMP, 4149 &instance->reg_set->doorbell); 4150 readl(&instance->reg_set->doorbell); 4151 } 4152 4153 for (j = 0; j < instance->snapdump_wait_time; j++) { 4154 abs_state = instance->instancet->read_fw_status_reg(instance); 4155 fw_state = abs_state & MFI_STATE_MASK; 4156 if (fw_state == MFI_STATE_FAULT) { 4157 dev_printk(KERN_ERR, &instance->pdev->dev, 4158 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n", 4159 abs_state & MFI_STATE_FAULT_CODE, 4160 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4161 return; 4162 } 4163 msleep(1000); 4164 } 4165} 4166 4167/* This function waits for outstanding commands on fusion to complete */ 4168static int 4169megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, 4170 int reason, int *convert) 4171{ 4172 int i, outstanding, retval = 0, hb_seconds_missed = 0; 4173 u32 fw_state, abs_state; 4174 u32 waittime_for_io_completion; 4175 4176 waittime_for_io_completion = 4177 min_t(u32, resetwaittime, 4178 (resetwaittime - instance->snapdump_wait_time)); 4179 4180 if (reason == MFI_IO_TIMEOUT_OCR) { 4181 dev_info(&instance->pdev->dev, 4182 "MFI command is timed out\n"); 4183 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4184 if (instance->snapdump_wait_time) 4185 megasas_trigger_snap_dump(instance); 4186 retval = 1; 4187 goto out; 4188 } 4189 4190 for (i = 0; i < waittime_for_io_completion; i++) { 4191 /* Check if firmware is in fault state */ 4192 abs_state = instance->instancet->read_fw_status_reg(instance); 4193 fw_state = abs_state & MFI_STATE_MASK; 4194 if (fw_state == MFI_STATE_FAULT) { 4195 dev_printk(KERN_ERR, &instance->pdev->dev, 4196 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n", 4197 abs_state & MFI_STATE_FAULT_CODE, 4198 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4199 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4200 if (instance->requestorId && reason) { 4201 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" 4202 " state while polling during" 4203 " I/O timeout handling for %d\n", 4204 instance->host->host_no); 4205 *convert = 1; 4206 } 4207 4208 retval = 1; 4209 goto out; 4210 } 4211 4212 4213 /* If SR-IOV VF mode & heartbeat timeout, don't wait */ 4214 if (instance->requestorId && !reason) { 4215 retval = 1; 4216 goto out; 4217 } 4218 4219 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ 4220 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) { 4221 if (instance->hb_host_mem->HB.fwCounter != 4222 instance->hb_host_mem->HB.driverCounter) { 4223 instance->hb_host_mem->HB.driverCounter = 4224 instance->hb_host_mem->HB.fwCounter; 4225 hb_seconds_missed = 0; 4226 } else { 4227 hb_seconds_missed++; 4228 if (hb_seconds_missed == 4229 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { 4230 dev_warn(&instance->pdev->dev, "SR-IOV:" 4231 " Heartbeat never completed " 4232 " while polling during I/O " 4233 " timeout handling for " 4234 "scsi%d.\n", 4235 instance->host->host_no); 4236 *convert = 1; 4237 retval = 1; 4238 goto out; 4239 } 4240 } 4241 } 4242 4243 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4244 outstanding = atomic_read(&instance->fw_outstanding); 4245 if (!outstanding) 4246 goto out; 4247 4248 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 4249 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 4250 "commands to complete for scsi%d\n", i, 4251 outstanding, instance->host->host_no); 4252 } 4253 msleep(1000); 4254 } 4255 4256 if (instance->snapdump_wait_time) { 4257 megasas_trigger_snap_dump(instance); 4258 retval = 1; 4259 goto out; 4260 } 4261 4262 if (atomic_read(&instance->fw_outstanding)) { 4263 dev_err(&instance->pdev->dev, "pending commands remain after waiting, " 4264 "will reset adapter scsi%d.\n", 4265 instance->host->host_no); 4266 *convert = 1; 4267 retval = 1; 4268 } 4269 4270out: 4271 return retval; 4272} 4273 4274void megasas_reset_reply_desc(struct megasas_instance *instance) 4275{ 4276 int i, j, count; 4277 struct fusion_context *fusion; 4278 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 4279 4280 fusion = instance->ctrl_context; 4281 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 4282 count += instance->iopoll_q_count; 4283 4284 for (i = 0 ; i < count ; i++) { 4285 fusion->last_reply_idx[i] = 0; 4286 reply_desc = fusion->reply_frames_desc[i]; 4287 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) 4288 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 4289 } 4290} 4291 4292/* 4293 * megasas_refire_mgmt_cmd : Re-fire management commands 4294 * @instance: Controller's soft instance 4295*/ 4296static void megasas_refire_mgmt_cmd(struct megasas_instance *instance, 4297 bool return_ioctl) 4298{ 4299 int j; 4300 struct megasas_cmd_fusion *cmd_fusion; 4301 struct fusion_context *fusion; 4302 struct megasas_cmd *cmd_mfi; 4303 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4304 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 4305 u16 smid; 4306 bool refire_cmd = false; 4307 u8 result; 4308 u32 opcode = 0; 4309 4310 fusion = instance->ctrl_context; 4311 4312 /* Re-fire management commands. 4313 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. 4314 */ 4315 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { 4316 cmd_fusion = fusion->cmd_list[j]; 4317 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 4318 smid = le16_to_cpu(cmd_mfi->context.smid); 4319 result = REFIRE_CMD; 4320 4321 if (!smid) 4322 continue; 4323 4324 req_desc = megasas_get_request_descriptor(instance, smid - 1); 4325 4326 switch (cmd_mfi->frame->hdr.cmd) { 4327 case MFI_CMD_DCMD: 4328 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode); 4329 /* Do not refire shutdown command */ 4330 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 4331 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; 4332 result = COMPLETE_CMD; 4333 break; 4334 } 4335 4336 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) && 4337 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 4338 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); 4339 4340 if (!refire_cmd) 4341 result = RETURN_CMD; 4342 4343 break; 4344 case MFI_CMD_NVME: 4345 if (!instance->support_nvme_passthru) { 4346 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 4347 result = COMPLETE_CMD; 4348 } 4349 4350 break; 4351 case MFI_CMD_TOOLBOX: 4352 if (!instance->support_pci_lane_margining) { 4353 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 4354 result = COMPLETE_CMD; 4355 } 4356 4357 break; 4358 default: 4359 break; 4360 } 4361 4362 if (return_ioctl && cmd_mfi->sync_cmd && 4363 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) { 4364 dev_err(&instance->pdev->dev, 4365 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x\n", 4366 __func__, __LINE__, cmd_mfi->frame->hdr.cmd, 4367 le32_to_cpu(cmd_mfi->frame->dcmd.opcode)); 4368 cmd_mfi->cmd_status_drv = DCMD_BUSY; 4369 result = COMPLETE_CMD; 4370 } 4371 4372 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 4373 cmd_fusion->io_request; 4374 if (scsi_io_req->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) 4375 result = RETURN_CMD; 4376 4377 switch (result) { 4378 case REFIRE_CMD: 4379 megasas_fire_cmd_fusion(instance, req_desc); 4380 break; 4381 case RETURN_CMD: 4382 megasas_return_cmd(instance, cmd_mfi); 4383 break; 4384 case COMPLETE_CMD: 4385 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 4386 break; 4387 } 4388 } 4389} 4390 4391/* 4392 * megasas_return_polled_cmds: Return polled mode commands back to the pool 4393 * before initiating an OCR. 4394 * @instance: Controller's soft instance 4395 */ 4396static void 4397megasas_return_polled_cmds(struct megasas_instance *instance) 4398{ 4399 int i; 4400 struct megasas_cmd_fusion *cmd_fusion; 4401 struct fusion_context *fusion; 4402 struct megasas_cmd *cmd_mfi; 4403 4404 fusion = instance->ctrl_context; 4405 4406 for (i = instance->max_scsi_cmds; i < instance->max_fw_cmds; i++) { 4407 cmd_fusion = fusion->cmd_list[i]; 4408 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 4409 4410 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 4411 if (megasas_dbg_lvl & OCR_DEBUG) 4412 dev_info(&instance->pdev->dev, 4413 "%s %d return cmd 0x%x opcode 0x%x\n", 4414 __func__, __LINE__, cmd_mfi->frame->hdr.cmd, 4415 le32_to_cpu(cmd_mfi->frame->dcmd.opcode)); 4416 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 4417 megasas_return_cmd(instance, cmd_mfi); 4418 } 4419 } 4420} 4421 4422/* 4423 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device 4424 * @instance: per adapter struct 4425 * @channel: the channel assigned by the OS 4426 * @id: the id assigned by the OS 4427 * 4428 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED 4429 */ 4430 4431static int megasas_track_scsiio(struct megasas_instance *instance, 4432 int id, int channel) 4433{ 4434 int i, found = 0; 4435 struct megasas_cmd_fusion *cmd_fusion; 4436 struct fusion_context *fusion; 4437 fusion = instance->ctrl_context; 4438 4439 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4440 cmd_fusion = fusion->cmd_list[i]; 4441 if (cmd_fusion->scmd && 4442 (cmd_fusion->scmd->device->id == id && 4443 cmd_fusion->scmd->device->channel == channel)) { 4444 dev_info(&instance->pdev->dev, 4445 "SCSI commands pending to target" 4446 "channel %d id %d \tSMID: 0x%x\n", 4447 channel, id, cmd_fusion->index); 4448 scsi_print_command(cmd_fusion->scmd); 4449 found = 1; 4450 break; 4451 } 4452 } 4453 4454 return found ? FAILED : SUCCESS; 4455} 4456 4457/** 4458 * megasas_tm_response_code - translation of device response code 4459 * @instance: Controller's soft instance 4460 * @mpi_reply: MPI reply returned by firmware 4461 * 4462 * Return nothing. 4463 */ 4464static void 4465megasas_tm_response_code(struct megasas_instance *instance, 4466 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) 4467{ 4468 char *desc; 4469 4470 switch (mpi_reply->ResponseCode) { 4471 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: 4472 desc = "task management request completed"; 4473 break; 4474 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: 4475 desc = "invalid frame"; 4476 break; 4477 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: 4478 desc = "task management request not supported"; 4479 break; 4480 case MPI2_SCSITASKMGMT_RSP_TM_FAILED: 4481 desc = "task management request failed"; 4482 break; 4483 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: 4484 desc = "task management request succeeded"; 4485 break; 4486 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: 4487 desc = "invalid lun"; 4488 break; 4489 case 0xA: 4490 desc = "overlapped tag attempted"; 4491 break; 4492 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: 4493 desc = "task queued, however not sent to target"; 4494 break; 4495 default: 4496 desc = "unknown"; 4497 break; 4498 } 4499 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", 4500 mpi_reply->ResponseCode, desc); 4501 dev_dbg(&instance->pdev->dev, 4502 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" 4503 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", 4504 mpi_reply->TerminationCount, mpi_reply->DevHandle, 4505 mpi_reply->Function, mpi_reply->TaskType, 4506 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); 4507} 4508 4509/** 4510 * megasas_issue_tm - main routine for sending tm requests 4511 * @instance: per adapter struct 4512 * @device_handle: device handle 4513 * @channel: the channel assigned by the OS 4514 * @id: the id assigned by the OS 4515 * @smid_task: smid assigned to the task 4516 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) 4517 * @mr_device_priv_data: private data 4518 * Context: user 4519 * 4520 * MegaRaid use MPT interface for Task Magement request. 4521 * A generic API for sending task management requests to firmware. 4522 * 4523 * Return SUCCESS or FAILED. 4524 */ 4525static int 4526megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, 4527 uint channel, uint id, u16 smid_task, u8 type, 4528 struct MR_PRIV_DEVICE *mr_device_priv_data) 4529{ 4530 struct MR_TASK_MANAGE_REQUEST *mr_request; 4531 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; 4532 unsigned long timeleft; 4533 struct megasas_cmd_fusion *cmd_fusion; 4534 struct megasas_cmd *cmd_mfi; 4535 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4536 struct fusion_context *fusion = NULL; 4537 struct megasas_cmd_fusion *scsi_lookup; 4538 int rc; 4539 int timeout = MEGASAS_DEFAULT_TM_TIMEOUT; 4540 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; 4541 4542 fusion = instance->ctrl_context; 4543 4544 cmd_mfi = megasas_get_cmd(instance); 4545 4546 if (!cmd_mfi) { 4547 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4548 __func__, __LINE__); 4549 return -ENOMEM; 4550 } 4551 4552 cmd_fusion = megasas_get_cmd_fusion(instance, 4553 instance->max_scsi_cmds + cmd_mfi->index); 4554 4555 /* Save the smid. To be used for returning the cmd */ 4556 cmd_mfi->context.smid = cmd_fusion->index; 4557 4558 req_desc = megasas_get_request_descriptor(instance, 4559 (cmd_fusion->index - 1)); 4560 4561 cmd_fusion->request_desc = req_desc; 4562 req_desc->Words = 0; 4563 4564 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; 4565 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); 4566 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; 4567 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 4568 mpi_request->DevHandle = cpu_to_le16(device_handle); 4569 mpi_request->TaskType = type; 4570 mpi_request->TaskMID = cpu_to_le16(smid_task); 4571 mpi_request->LUN[1] = 0; 4572 4573 4574 req_desc = cmd_fusion->request_desc; 4575 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); 4576 req_desc->HighPriority.RequestFlags = 4577 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << 4578 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 4579 req_desc->HighPriority.MSIxIndex = 0; 4580 req_desc->HighPriority.LMID = 0; 4581 req_desc->HighPriority.Reserved1 = 0; 4582 4583 if (channel < MEGASAS_MAX_PD_CHANNELS) 4584 mr_request->tmReqFlags.isTMForPD = 1; 4585 else 4586 mr_request->tmReqFlags.isTMForLD = 1; 4587 4588 init_completion(&cmd_fusion->done); 4589 megasas_fire_cmd_fusion(instance, req_desc); 4590 4591 switch (type) { 4592 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4593 timeout = mr_device_priv_data->task_abort_tmo; 4594 break; 4595 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4596 timeout = mr_device_priv_data->target_reset_tmo; 4597 break; 4598 } 4599 4600 timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ); 4601 4602 if (!timeleft) { 4603 dev_err(&instance->pdev->dev, 4604 "task mgmt type 0x%x timed out\n", type); 4605 mutex_unlock(&instance->reset_mutex); 4606 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); 4607 mutex_lock(&instance->reset_mutex); 4608 return rc; 4609 } 4610 4611 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; 4612 megasas_tm_response_code(instance, mpi_reply); 4613 4614 megasas_return_cmd(instance, cmd_mfi); 4615 rc = SUCCESS; 4616 switch (type) { 4617 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4618 scsi_lookup = fusion->cmd_list[smid_task - 1]; 4619 4620 if (scsi_lookup->scmd == NULL) 4621 break; 4622 else { 4623 instance->instancet->disable_intr(instance); 4624 megasas_sync_irqs((unsigned long)instance); 4625 instance->instancet->enable_intr(instance); 4626 megasas_enable_irq_poll(instance); 4627 if (scsi_lookup->scmd == NULL) 4628 break; 4629 } 4630 rc = FAILED; 4631 break; 4632 4633 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4634 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) 4635 break; 4636 instance->instancet->disable_intr(instance); 4637 megasas_sync_irqs((unsigned long)instance); 4638 rc = megasas_track_scsiio(instance, id, channel); 4639 instance->instancet->enable_intr(instance); 4640 megasas_enable_irq_poll(instance); 4641 4642 break; 4643 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: 4644 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: 4645 break; 4646 default: 4647 rc = FAILED; 4648 break; 4649 } 4650 4651 return rc; 4652 4653} 4654 4655/* 4656 * megasas_fusion_smid_lookup : Look for fusion command corresponding to SCSI 4657 * @instance: per adapter struct 4658 * 4659 * Return Non Zero index, if SMID found in outstanding commands 4660 */ 4661static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) 4662{ 4663 int i, ret = 0; 4664 struct megasas_instance *instance; 4665 struct megasas_cmd_fusion *cmd_fusion; 4666 struct fusion_context *fusion; 4667 4668 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4669 4670 fusion = instance->ctrl_context; 4671 4672 for (i = 0; i < instance->max_scsi_cmds; i++) { 4673 cmd_fusion = fusion->cmd_list[i]; 4674 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { 4675 scmd_printk(KERN_NOTICE, scmd, "Abort request is for" 4676 " SMID: %d\n", cmd_fusion->index); 4677 ret = cmd_fusion->index; 4678 break; 4679 } 4680 } 4681 4682 return ret; 4683} 4684 4685/* 4686* megasas_get_tm_devhandle - Get devhandle for TM request 4687* @sdev- OS provided scsi device 4688* 4689* Returns- devhandle/targetID of SCSI device 4690*/ 4691static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) 4692{ 4693 u16 pd_index = 0; 4694 u32 device_id; 4695 struct megasas_instance *instance; 4696 struct fusion_context *fusion; 4697 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 4698 u16 devhandle = (u16)ULONG_MAX; 4699 4700 instance = (struct megasas_instance *)sdev->host->hostdata; 4701 fusion = instance->ctrl_context; 4702 4703 if (!MEGASAS_IS_LOGICAL(sdev)) { 4704 if (instance->use_seqnum_jbod_fp) { 4705 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) 4706 + sdev->id; 4707 pd_sync = (void *)fusion->pd_seq_sync 4708 [(instance->pd_seq_map_id - 1) & 1]; 4709 devhandle = pd_sync->seq[pd_index].devHandle; 4710 } else 4711 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" 4712 " without JBOD MAP support from %s %d\n", __func__, __LINE__); 4713 } else { 4714 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 4715 + sdev->id; 4716 devhandle = device_id; 4717 } 4718 4719 return devhandle; 4720} 4721 4722/* 4723 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters 4724 * @scmd : pointer to scsi command object 4725 * 4726 * Return SUCCESS, if command aborted else FAILED 4727 */ 4728 4729int megasas_task_abort_fusion(struct scsi_cmnd *scmd) 4730{ 4731 struct megasas_instance *instance; 4732 u16 smid, devhandle; 4733 int ret; 4734 struct MR_PRIV_DEVICE *mr_device_priv_data; 4735 mr_device_priv_data = scmd->device->hostdata; 4736 4737 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4738 4739 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4740 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4741 "SCSI host:%d\n", instance->host->host_no); 4742 ret = FAILED; 4743 return ret; 4744 } 4745 4746 if (!mr_device_priv_data) { 4747 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4748 "scmd(%p)\n", scmd); 4749 scmd->result = DID_NO_CONNECT << 16; 4750 ret = SUCCESS; 4751 goto out; 4752 } 4753 4754 if (!mr_device_priv_data->is_tm_capable) { 4755 ret = FAILED; 4756 goto out; 4757 } 4758 4759 mutex_lock(&instance->reset_mutex); 4760 4761 smid = megasas_fusion_smid_lookup(scmd); 4762 4763 if (!smid) { 4764 ret = SUCCESS; 4765 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" 4766 " issued is not found in outstanding commands\n"); 4767 mutex_unlock(&instance->reset_mutex); 4768 goto out; 4769 } 4770 4771 devhandle = megasas_get_tm_devhandle(scmd->device); 4772 4773 if (devhandle == (u16)ULONG_MAX) { 4774 ret = FAILED; 4775 sdev_printk(KERN_INFO, scmd->device, 4776 "task abort issued for invalid devhandle\n"); 4777 mutex_unlock(&instance->reset_mutex); 4778 goto out; 4779 } 4780 sdev_printk(KERN_INFO, scmd->device, 4781 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n", 4782 scmd, devhandle); 4783 4784 mr_device_priv_data->tm_busy = true; 4785 ret = megasas_issue_tm(instance, devhandle, 4786 scmd->device->channel, scmd->device->id, smid, 4787 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, 4788 mr_device_priv_data); 4789 mr_device_priv_data->tm_busy = false; 4790 4791 mutex_unlock(&instance->reset_mutex); 4792 scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n", 4793 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 4794out: 4795 scsi_print_command(scmd); 4796 if (megasas_dbg_lvl & TM_DEBUG) 4797 megasas_dump_fusion_io(scmd); 4798 4799 return ret; 4800} 4801 4802/* 4803 * megasas_reset_target_fusion : target reset function for fusion adapters 4804 * scmd: SCSI command pointer 4805 * 4806 * Returns SUCCESS if all commands associated with target aborted else FAILED 4807 */ 4808 4809int megasas_reset_target_fusion(struct scsi_cmnd *scmd) 4810{ 4811 4812 struct megasas_instance *instance; 4813 int ret = FAILED; 4814 u16 devhandle; 4815 struct MR_PRIV_DEVICE *mr_device_priv_data; 4816 mr_device_priv_data = scmd->device->hostdata; 4817 4818 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4819 4820 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4821 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4822 "SCSI host:%d\n", instance->host->host_no); 4823 ret = FAILED; 4824 return ret; 4825 } 4826 4827 if (!mr_device_priv_data) { 4828 sdev_printk(KERN_INFO, scmd->device, 4829 "device been deleted! scmd: (0x%p)\n", scmd); 4830 scmd->result = DID_NO_CONNECT << 16; 4831 ret = SUCCESS; 4832 goto out; 4833 } 4834 4835 if (!mr_device_priv_data->is_tm_capable) { 4836 ret = FAILED; 4837 goto out; 4838 } 4839 4840 mutex_lock(&instance->reset_mutex); 4841 devhandle = megasas_get_tm_devhandle(scmd->device); 4842 4843 if (devhandle == (u16)ULONG_MAX) { 4844 ret = FAILED; 4845 sdev_printk(KERN_INFO, scmd->device, 4846 "target reset issued for invalid devhandle\n"); 4847 mutex_unlock(&instance->reset_mutex); 4848 goto out; 4849 } 4850 4851 sdev_printk(KERN_INFO, scmd->device, 4852 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n", 4853 scmd, devhandle); 4854 mr_device_priv_data->tm_busy = true; 4855 ret = megasas_issue_tm(instance, devhandle, 4856 scmd->device->channel, scmd->device->id, 0, 4857 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 4858 mr_device_priv_data); 4859 mr_device_priv_data->tm_busy = false; 4860 mutex_unlock(&instance->reset_mutex); 4861 scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n", 4862 (ret == SUCCESS) ? "SUCCESS" : "FAILED"); 4863 4864out: 4865 return ret; 4866} 4867 4868/*SRIOV get other instance in cluster if any*/ 4869static struct 4870megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) 4871{ 4872 int i; 4873 4874 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { 4875 if (megasas_mgmt_info.instance[i] && 4876 (megasas_mgmt_info.instance[i] != instance) && 4877 megasas_mgmt_info.instance[i]->requestorId && 4878 megasas_mgmt_info.instance[i]->peerIsPresent && 4879 (memcmp((megasas_mgmt_info.instance[i]->clusterId), 4880 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) 4881 return megasas_mgmt_info.instance[i]; 4882 } 4883 return NULL; 4884} 4885 4886/* Check for a second path that is currently UP */ 4887int megasas_check_mpio_paths(struct megasas_instance *instance, 4888 struct scsi_cmnd *scmd) 4889{ 4890 struct megasas_instance *peer_instance = NULL; 4891 int retval = (DID_REQUEUE << 16); 4892 4893 if (instance->peerIsPresent) { 4894 peer_instance = megasas_get_peer_instance(instance); 4895 if ((peer_instance) && 4896 (atomic_read(&peer_instance->adprecovery) == 4897 MEGASAS_HBA_OPERATIONAL)) 4898 retval = (DID_NO_CONNECT << 16); 4899 } 4900 return retval; 4901} 4902 4903/* Core fusion reset function */ 4904int megasas_reset_fusion(struct Scsi_Host *shost, int reason) 4905{ 4906 int retval = SUCCESS, i, j, convert = 0; 4907 struct megasas_instance *instance; 4908 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; 4909 struct fusion_context *fusion; 4910 u32 abs_state, status_reg, reset_adapter, fpio_count = 0; 4911 u32 io_timeout_in_crash_mode = 0; 4912 struct scsi_cmnd *scmd_local = NULL; 4913 struct scsi_device *sdev; 4914 int ret_target_prop = DCMD_FAILED; 4915 bool is_target_prop = false; 4916 bool do_adp_reset = true; 4917 int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES; 4918 4919 instance = (struct megasas_instance *)shost->hostdata; 4920 fusion = instance->ctrl_context; 4921 4922 mutex_lock(&instance->reset_mutex); 4923 4924 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 4925 dev_warn(&instance->pdev->dev, "Hardware critical error, " 4926 "returning FAILED for scsi%d.\n", 4927 instance->host->host_no); 4928 mutex_unlock(&instance->reset_mutex); 4929 return FAILED; 4930 } 4931 status_reg = instance->instancet->read_fw_status_reg(instance); 4932 abs_state = status_reg & MFI_STATE_MASK; 4933 4934 /* IO timeout detected, forcibly put FW in FAULT state */ 4935 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && 4936 instance->crash_dump_app_support && reason) { 4937 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " 4938 "forcibly FAULT Firmware\n"); 4939 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4940 status_reg = megasas_readl(instance, &instance->reg_set->doorbell); 4941 writel(status_reg | MFI_STATE_FORCE_OCR, 4942 &instance->reg_set->doorbell); 4943 readl(&instance->reg_set->doorbell); 4944 mutex_unlock(&instance->reset_mutex); 4945 do { 4946 ssleep(3); 4947 io_timeout_in_crash_mode++; 4948 dev_dbg(&instance->pdev->dev, "waiting for [%d] " 4949 "seconds for crash dump collection and OCR " 4950 "to be done\n", (io_timeout_in_crash_mode * 3)); 4951 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 4952 (io_timeout_in_crash_mode < 80)); 4953 4954 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 4955 dev_info(&instance->pdev->dev, "OCR done for IO " 4956 "timeout case\n"); 4957 retval = SUCCESS; 4958 } else { 4959 dev_info(&instance->pdev->dev, "Controller is not " 4960 "operational after 240 seconds wait for IO " 4961 "timeout case in FW crash dump mode\n do " 4962 "OCR/kill adapter\n"); 4963 retval = megasas_reset_fusion(shost, 0); 4964 } 4965 return retval; 4966 } 4967 4968 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 4969 del_timer_sync(&instance->sriov_heartbeat_timer); 4970 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4971 set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags); 4972 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); 4973 instance->instancet->disable_intr(instance); 4974 megasas_sync_irqs((unsigned long)instance); 4975 4976 /* First try waiting for commands to complete */ 4977 if (megasas_wait_for_outstanding_fusion(instance, reason, 4978 &convert)) { 4979 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4980 dev_warn(&instance->pdev->dev, "resetting fusion " 4981 "adapter scsi%d.\n", instance->host->host_no); 4982 if (convert) 4983 reason = 0; 4984 4985 if (megasas_dbg_lvl & OCR_DEBUG) 4986 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); 4987 4988 /* Now return commands back to the OS */ 4989 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4990 cmd_fusion = fusion->cmd_list[i]; 4991 /*check for extra commands issued by driver*/ 4992 if (instance->adapter_type >= VENTURA_SERIES) { 4993 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; 4994 megasas_return_cmd_fusion(instance, r1_cmd); 4995 } 4996 scmd_local = cmd_fusion->scmd; 4997 if (cmd_fusion->scmd) { 4998 if (megasas_dbg_lvl & OCR_DEBUG) { 4999 sdev_printk(KERN_INFO, 5000 cmd_fusion->scmd->device, "SMID: 0x%x\n", 5001 cmd_fusion->index); 5002 megasas_dump_fusion_io(cmd_fusion->scmd); 5003 } 5004 5005 if (cmd_fusion->io_request->Function == 5006 MPI2_FUNCTION_SCSI_IO_REQUEST) 5007 fpio_count++; 5008 5009 scmd_local->result = 5010 megasas_check_mpio_paths(instance, 5011 scmd_local); 5012 if (instance->ldio_threshold && 5013 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 5014 atomic_dec(&instance->ldio_outstanding); 5015 megasas_return_cmd_fusion(instance, cmd_fusion); 5016 scsi_dma_unmap(scmd_local); 5017 scsi_done(scmd_local); 5018 } 5019 } 5020 5021 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n", 5022 fpio_count); 5023 5024 atomic_set(&instance->fw_outstanding, 0); 5025 5026 status_reg = instance->instancet->read_fw_status_reg(instance); 5027 abs_state = status_reg & MFI_STATE_MASK; 5028 reset_adapter = status_reg & MFI_RESET_ADAPTER; 5029 if (instance->disableOnlineCtrlReset || 5030 (abs_state == MFI_STATE_FAULT && !reset_adapter)) { 5031 /* Reset not supported, kill adapter */ 5032 dev_warn(&instance->pdev->dev, "Reset not supported" 5033 ", killing adapter scsi%d.\n", 5034 instance->host->host_no); 5035 goto kill_hba; 5036 } 5037 5038 /* Let SR-IOV VF & PF sync up if there was a HB failure */ 5039 if (instance->requestorId && !reason) { 5040 msleep(MEGASAS_OCR_SETTLE_TIME_VF); 5041 do_adp_reset = false; 5042 max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF; 5043 } 5044 5045 /* Now try to reset the chip */ 5046 for (i = 0; i < max_reset_tries; i++) { 5047 /* 5048 * Do adp reset and wait for 5049 * controller to transition to ready 5050 */ 5051 if (megasas_adp_reset_wait_for_ready(instance, 5052 do_adp_reset, 1) == FAILED) 5053 continue; 5054 5055 /* Wait for FW to become ready */ 5056 if (megasas_transition_to_ready(instance, 1)) { 5057 dev_warn(&instance->pdev->dev, 5058 "Failed to transition controller to ready for " 5059 "scsi%d.\n", instance->host->host_no); 5060 continue; 5061 } 5062 megasas_reset_reply_desc(instance); 5063 megasas_fusion_update_can_queue(instance, OCR_CONTEXT); 5064 5065 if (megasas_ioc_init_fusion(instance)) { 5066 continue; 5067 } 5068 5069 if (megasas_get_ctrl_info(instance)) { 5070 dev_info(&instance->pdev->dev, 5071 "Failed from %s %d\n", 5072 __func__, __LINE__); 5073 goto kill_hba; 5074 } 5075 5076 megasas_refire_mgmt_cmd(instance, 5077 (i == (MEGASAS_FUSION_MAX_RESET_TRIES - 1) 5078 ? 1 : 0)); 5079 5080 /* Reset load balance info */ 5081 if (fusion->load_balance_info) 5082 memset(fusion->load_balance_info, 0, 5083 (sizeof(struct LD_LOAD_BALANCE_INFO) * 5084 MAX_LOGICAL_DRIVES_EXT)); 5085 5086 if (!megasas_get_map_info(instance)) { 5087 megasas_sync_map_info(instance); 5088 } else { 5089 /* 5090 * Return pending polled mode cmds before 5091 * retrying OCR 5092 */ 5093 megasas_return_polled_cmds(instance); 5094 continue; 5095 } 5096 5097 megasas_setup_jbod_map(instance); 5098 5099 /* reset stream detection array */ 5100 if (instance->adapter_type >= VENTURA_SERIES) { 5101 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { 5102 memset(fusion->stream_detect_by_ld[j], 5103 0, sizeof(struct LD_STREAM_DETECT)); 5104 fusion->stream_detect_by_ld[j]->mru_bit_map 5105 = MR_STREAM_BITMAP; 5106 } 5107 } 5108 5109 clear_bit(MEGASAS_FUSION_IN_RESET, 5110 &instance->reset_flags); 5111 instance->instancet->enable_intr(instance); 5112 megasas_enable_irq_poll(instance); 5113 shost_for_each_device(sdev, shost) { 5114 if ((instance->tgt_prop) && 5115 (instance->nvme_page_size)) 5116 ret_target_prop = megasas_get_target_prop(instance, sdev); 5117 5118 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 5119 megasas_set_dynamic_target_properties(sdev, is_target_prop); 5120 } 5121 5122 status_reg = instance->instancet->read_fw_status_reg 5123 (instance); 5124 abs_state = status_reg & MFI_STATE_MASK; 5125 if (abs_state != MFI_STATE_OPERATIONAL) { 5126 dev_info(&instance->pdev->dev, 5127 "Adapter is not OPERATIONAL, state 0x%x for scsi:%d\n", 5128 abs_state, instance->host->host_no); 5129 goto out; 5130 } 5131 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 5132 5133 dev_info(&instance->pdev->dev, 5134 "Adapter is OPERATIONAL for scsi:%d\n", 5135 instance->host->host_no); 5136 5137 /* Restart SR-IOV heartbeat */ 5138 if (instance->requestorId) { 5139 if (!megasas_sriov_start_heartbeat(instance, 0)) 5140 megasas_start_timer(instance); 5141 else 5142 instance->skip_heartbeat_timer_del = 1; 5143 } 5144 5145 if (instance->crash_dump_drv_support && 5146 instance->crash_dump_app_support) 5147 megasas_set_crash_dump_params(instance, 5148 MR_CRASH_BUF_TURN_ON); 5149 else 5150 megasas_set_crash_dump_params(instance, 5151 MR_CRASH_BUF_TURN_OFF); 5152 5153 if (instance->snapdump_wait_time) { 5154 megasas_get_snapdump_properties(instance); 5155 dev_info(&instance->pdev->dev, 5156 "Snap dump wait time\t: %d\n", 5157 instance->snapdump_wait_time); 5158 } 5159 5160 retval = SUCCESS; 5161 5162 /* Adapter reset completed successfully */ 5163 dev_warn(&instance->pdev->dev, 5164 "Reset successful for scsi%d.\n", 5165 instance->host->host_no); 5166 5167 goto out; 5168 } 5169 /* Reset failed, kill the adapter */ 5170 dev_warn(&instance->pdev->dev, "Reset failed, killing " 5171 "adapter scsi%d.\n", instance->host->host_no); 5172 goto kill_hba; 5173 } else { 5174 /* For VF: Restart HB timer if we didn't OCR */ 5175 if (instance->requestorId) { 5176 megasas_start_timer(instance); 5177 } 5178 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 5179 instance->instancet->enable_intr(instance); 5180 megasas_enable_irq_poll(instance); 5181 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 5182 goto out; 5183 } 5184kill_hba: 5185 megaraid_sas_kill_hba(instance); 5186 megasas_enable_irq_poll(instance); 5187 instance->skip_heartbeat_timer_del = 1; 5188 retval = FAILED; 5189out: 5190 clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags); 5191 mutex_unlock(&instance->reset_mutex); 5192 return retval; 5193} 5194 5195/* Fusion Crash dump collection */ 5196static void megasas_fusion_crash_dump(struct megasas_instance *instance) 5197{ 5198 u32 status_reg; 5199 u8 partial_copy = 0; 5200 int wait = 0; 5201 5202 5203 status_reg = instance->instancet->read_fw_status_reg(instance); 5204 5205 /* 5206 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer 5207 * to host crash buffers 5208 */ 5209 if (instance->drv_buf_index == 0) { 5210 /* Buffer is already allocated for old Crash dump. 5211 * Do OCR and do not wait for crash dump collection 5212 */ 5213 if (instance->drv_buf_alloc) { 5214 dev_info(&instance->pdev->dev, "earlier crash dump is " 5215 "not yet copied by application, ignoring this " 5216 "crash dump and initiating OCR\n"); 5217 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 5218 writel(status_reg, 5219 &instance->reg_set->outbound_scratch_pad_0); 5220 readl(&instance->reg_set->outbound_scratch_pad_0); 5221 return; 5222 } 5223 megasas_alloc_host_crash_buffer(instance); 5224 dev_info(&instance->pdev->dev, "Number of host crash buffers " 5225 "allocated: %d\n", instance->drv_buf_alloc); 5226 } 5227 5228 while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) && 5229 (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) { 5230 if (!(status_reg & MFI_STATE_DMADONE)) { 5231 /* 5232 * Next crash dump buffer is not yet DMA'd by FW 5233 * Check after 10ms. Wait for 1 second for FW to 5234 * post the next buffer. If not bail out. 5235 */ 5236 wait++; 5237 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS); 5238 status_reg = instance->instancet->read_fw_status_reg( 5239 instance); 5240 continue; 5241 } 5242 5243 wait = 0; 5244 if (instance->drv_buf_index >= instance->drv_buf_alloc) { 5245 dev_info(&instance->pdev->dev, 5246 "Driver is done copying the buffer: %d\n", 5247 instance->drv_buf_alloc); 5248 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 5249 partial_copy = 1; 5250 break; 5251 } else { 5252 memcpy(instance->crash_buf[instance->drv_buf_index], 5253 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); 5254 instance->drv_buf_index++; 5255 status_reg &= ~MFI_STATE_DMADONE; 5256 } 5257 5258 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0); 5259 readl(&instance->reg_set->outbound_scratch_pad_0); 5260 5261 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS); 5262 status_reg = instance->instancet->read_fw_status_reg(instance); 5263 } 5264 5265 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { 5266 dev_info(&instance->pdev->dev, "Crash Dump is available,number " 5267 "of copied buffers: %d\n", instance->drv_buf_index); 5268 instance->fw_crash_buffer_size = instance->drv_buf_index; 5269 instance->fw_crash_state = AVAILABLE; 5270 instance->drv_buf_index = 0; 5271 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0); 5272 readl(&instance->reg_set->outbound_scratch_pad_0); 5273 if (!partial_copy) 5274 megasas_reset_fusion(instance->host, 0); 5275 } 5276} 5277 5278 5279/* Fusion OCR work queue */ 5280void megasas_fusion_ocr_wq(struct work_struct *work) 5281{ 5282 struct megasas_instance *instance = 5283 container_of(work, struct megasas_instance, work_init); 5284 5285 megasas_reset_fusion(instance->host, 0); 5286} 5287 5288/* Allocate fusion context */ 5289int 5290megasas_alloc_fusion_context(struct megasas_instance *instance) 5291{ 5292 struct fusion_context *fusion; 5293 5294 instance->ctrl_context = kzalloc(sizeof(struct fusion_context), 5295 GFP_KERNEL); 5296 if (!instance->ctrl_context) { 5297 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 5298 __func__, __LINE__); 5299 return -ENOMEM; 5300 } 5301 5302 fusion = instance->ctrl_context; 5303 5304 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 5305 sizeof(LD_SPAN_INFO)); 5306 fusion->log_to_span = 5307 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 5308 fusion->log_to_span_pages); 5309 if (!fusion->log_to_span) { 5310 fusion->log_to_span = 5311 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 5312 sizeof(LD_SPAN_INFO))); 5313 if (!fusion->log_to_span) { 5314 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 5315 __func__, __LINE__); 5316 return -ENOMEM; 5317 } 5318 } 5319 5320 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 5321 sizeof(struct LD_LOAD_BALANCE_INFO)); 5322 fusion->load_balance_info = 5323 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 5324 fusion->load_balance_info_pages); 5325 if (!fusion->load_balance_info) { 5326 fusion->load_balance_info = 5327 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 5328 sizeof(struct LD_LOAD_BALANCE_INFO))); 5329 if (!fusion->load_balance_info) 5330 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " 5331 "continuing without Load Balance support\n"); 5332 } 5333 5334 return 0; 5335} 5336 5337void 5338megasas_free_fusion_context(struct megasas_instance *instance) 5339{ 5340 struct fusion_context *fusion = instance->ctrl_context; 5341 5342 if (fusion) { 5343 if (fusion->load_balance_info) { 5344 if (is_vmalloc_addr(fusion->load_balance_info)) 5345 vfree(fusion->load_balance_info); 5346 else 5347 free_pages((ulong)fusion->load_balance_info, 5348 fusion->load_balance_info_pages); 5349 } 5350 5351 if (fusion->log_to_span) { 5352 if (is_vmalloc_addr(fusion->log_to_span)) 5353 vfree(fusion->log_to_span); 5354 else 5355 free_pages((ulong)fusion->log_to_span, 5356 fusion->log_to_span_pages); 5357 } 5358 5359 kfree(fusion); 5360 } 5361} 5362 5363struct megasas_instance_template megasas_instance_template_fusion = { 5364 .enable_intr = megasas_enable_intr_fusion, 5365 .disable_intr = megasas_disable_intr_fusion, 5366 .clear_intr = megasas_clear_intr_fusion, 5367 .read_fw_status_reg = megasas_read_fw_status_reg_fusion, 5368 .adp_reset = megasas_adp_reset_fusion, 5369 .check_reset = megasas_check_reset_fusion, 5370 .service_isr = megasas_isr_fusion, 5371 .tasklet = megasas_complete_cmd_dpc_fusion, 5372 .init_adapter = megasas_init_adapter_fusion, 5373 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, 5374 .issue_dcmd = megasas_issue_dcmd_fusion, 5375}; 5376