FILE
megaraid_sas_fusion.c
File preview with syntax highlighting.
linux-6.19.14/drivers/scsi/megaraid/megaraid_sas_fusion.c
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 = alloc_ordered_workqueue( 1992 "%s", WQ_MEM_RECLAIM, 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 if (ext_status == 0xf0) 2047 scmd->result = (DID_ERROR << 16) | SAM_STAT_CHECK_CONDITION; 2048 else 2049 scmd->result = (DID_ERROR << 16) | ext_status; 2050 break; 2051 2052 case MFI_STAT_SCSI_DONE_WITH_ERROR: 2053 2054 scmd->result = (DID_OK << 16) | ext_status; 2055 if (ext_status == SAM_STAT_CHECK_CONDITION) { 2056 memcpy(scmd->sense_buffer, sense, 2057 SCSI_SENSE_BUFFERSIZE); 2058 } 2059 2060 /* 2061 * If the IO request is partially completed, then MR FW will 2062 * update "io_request->DataLength" field with actual number of 2063 * bytes transferred.Driver will set residual bytes count in 2064 * SCSI command structure. 2065 */ 2066 resid = (scsi_bufflen(scmd) - data_length); 2067 scsi_set_resid(scmd, resid); 2068 2069 if (resid && 2070 ((cmd_type == READ_WRITE_LDIO) || 2071 (cmd_type == READ_WRITE_SYSPDIO))) 2072 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" 2073 " requested/completed 0x%x/0x%x\n", 2074 status, scsi_bufflen(scmd), data_length); 2075 break; 2076 2077 case MFI_STAT_LD_OFFLINE: 2078 case MFI_STAT_DEVICE_NOT_FOUND: 2079 scmd->result = DID_BAD_TARGET << 16; 2080 break; 2081 case MFI_STAT_CONFIG_SEQ_MISMATCH: 2082 scmd->result = DID_IMM_RETRY << 16; 2083 break; 2084 default: 2085 scmd->result = DID_ERROR << 16; 2086 break; 2087 } 2088} 2089 2090/** 2091 * megasas_is_prp_possible - 2092 * Checks if native NVMe PRPs can be built for the IO 2093 * 2094 * @instance: Adapter soft state 2095 * @scmd: SCSI command from the mid-layer 2096 * @sge_count: scatter gather element count. 2097 * 2098 * Returns: true: PRPs can be built 2099 * false: IEEE SGLs needs to be built 2100 */ 2101static bool 2102megasas_is_prp_possible(struct megasas_instance *instance, 2103 struct scsi_cmnd *scmd, int sge_count) 2104{ 2105 u32 data_length = 0; 2106 struct scatterlist *sg_scmd; 2107 bool build_prp = false; 2108 u32 mr_nvme_pg_size; 2109 2110 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 2111 MR_DEFAULT_NVME_PAGE_SIZE); 2112 data_length = scsi_bufflen(scmd); 2113 sg_scmd = scsi_sglist(scmd); 2114 2115 /* 2116 * NVMe uses one PRP for each page (or part of a page) 2117 * look at the data length - if 4 pages or less then IEEE is OK 2118 * if > 5 pages then we need to build a native SGL 2119 * if > 4 and <= 5 pages, then check physical address of 1st SG entry 2120 * if this first size in the page is >= the residual beyond 4 pages 2121 * then use IEEE, otherwise use native SGL 2122 */ 2123 2124 if (data_length > (mr_nvme_pg_size * 5)) { 2125 build_prp = true; 2126 } else if ((data_length > (mr_nvme_pg_size * 4)) && 2127 (data_length <= (mr_nvme_pg_size * 5))) { 2128 /* check if 1st SG entry size is < residual beyond 4 pages */ 2129 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) 2130 build_prp = true; 2131 } 2132 2133 return build_prp; 2134} 2135 2136/** 2137 * megasas_make_prp_nvme - 2138 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only 2139 * 2140 * @instance: Adapter soft state 2141 * @scmd: SCSI command from the mid-layer 2142 * @sgl_ptr: SGL to be filled in 2143 * @cmd: Fusion command frame 2144 * @sge_count: scatter gather element count. 2145 * 2146 * Returns: true: PRPs are built 2147 * false: IEEE SGLs needs to be built 2148 */ 2149static bool 2150megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, 2151 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2152 struct megasas_cmd_fusion *cmd, int sge_count) 2153{ 2154 int sge_len, offset, num_prp_in_chain = 0; 2155 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; 2156 u64 *ptr_sgl; 2157 dma_addr_t ptr_sgl_phys; 2158 u64 sge_addr; 2159 u32 page_mask, page_mask_result; 2160 struct scatterlist *sg_scmd; 2161 u32 first_prp_len; 2162 bool build_prp = false; 2163 int data_len = scsi_bufflen(scmd); 2164 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 2165 MR_DEFAULT_NVME_PAGE_SIZE); 2166 2167 build_prp = megasas_is_prp_possible(instance, scmd, sge_count); 2168 2169 if (!build_prp) 2170 return false; 2171 2172 /* 2173 * Nvme has a very convoluted prp format. One prp is required 2174 * for each page or partial page. Driver need to split up OS sg_list 2175 * entries if it is longer than one page or cross a page 2176 * boundary. Driver also have to insert a PRP list pointer entry as 2177 * the last entry in each physical page of the PRP list. 2178 * 2179 * NOTE: The first PRP "entry" is actually placed in the first 2180 * SGL entry in the main message as IEEE 64 format. The 2nd 2181 * entry in the main message is the chain element, and the rest 2182 * of the PRP entries are built in the contiguous pcie buffer. 2183 */ 2184 page_mask = mr_nvme_pg_size - 1; 2185 ptr_sgl = (u64 *)cmd->sg_frame; 2186 ptr_sgl_phys = cmd->sg_frame_phys_addr; 2187 memset(ptr_sgl, 0, instance->max_chain_frame_sz); 2188 2189 /* Build chain frame element which holds all prps except first*/ 2190 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) 2191 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); 2192 2193 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); 2194 main_chain_element->NextChainOffset = 0; 2195 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2196 IEEE_SGE_FLAGS_SYSTEM_ADDR | 2197 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; 2198 2199 /* Build first prp, sge need not to be page aligned*/ 2200 ptr_first_sgl = sgl_ptr; 2201 sg_scmd = scsi_sglist(scmd); 2202 sge_addr = sg_dma_address(sg_scmd); 2203 sge_len = sg_dma_len(sg_scmd); 2204 2205 offset = (u32)(sge_addr & page_mask); 2206 first_prp_len = mr_nvme_pg_size - offset; 2207 2208 ptr_first_sgl->Address = cpu_to_le64(sge_addr); 2209 ptr_first_sgl->Length = cpu_to_le32(first_prp_len); 2210 2211 data_len -= first_prp_len; 2212 2213 if (sge_len > first_prp_len) { 2214 sge_addr += first_prp_len; 2215 sge_len -= first_prp_len; 2216 } else if (sge_len == first_prp_len) { 2217 sg_scmd = sg_next(sg_scmd); 2218 sge_addr = sg_dma_address(sg_scmd); 2219 sge_len = sg_dma_len(sg_scmd); 2220 } 2221 2222 for (;;) { 2223 offset = (u32)(sge_addr & page_mask); 2224 2225 /* Put PRP pointer due to page boundary*/ 2226 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; 2227 if (unlikely(!page_mask_result)) { 2228 scmd_printk(KERN_NOTICE, 2229 scmd, "page boundary ptr_sgl: 0x%p\n", 2230 ptr_sgl); 2231 ptr_sgl_phys += 8; 2232 *ptr_sgl = cpu_to_le64(ptr_sgl_phys); 2233 ptr_sgl++; 2234 num_prp_in_chain++; 2235 } 2236 2237 *ptr_sgl = cpu_to_le64(sge_addr); 2238 ptr_sgl++; 2239 ptr_sgl_phys += 8; 2240 num_prp_in_chain++; 2241 2242 sge_addr += mr_nvme_pg_size; 2243 sge_len -= mr_nvme_pg_size; 2244 data_len -= mr_nvme_pg_size; 2245 2246 if (data_len <= 0) 2247 break; 2248 2249 if (sge_len > 0) 2250 continue; 2251 2252 sg_scmd = sg_next(sg_scmd); 2253 sge_addr = sg_dma_address(sg_scmd); 2254 sge_len = sg_dma_len(sg_scmd); 2255 } 2256 2257 main_chain_element->Length = 2258 cpu_to_le32(num_prp_in_chain * sizeof(u64)); 2259 2260 return build_prp; 2261} 2262 2263/** 2264 * megasas_make_sgl_fusion - Prepares 32-bit SGL 2265 * @instance: Adapter soft state 2266 * @scp: SCSI command from the mid-layer 2267 * @sgl_ptr: SGL to be filled in 2268 * @cmd: cmd we are working on 2269 * @sge_count: sge count 2270 * 2271 */ 2272static void 2273megasas_make_sgl_fusion(struct megasas_instance *instance, 2274 struct scsi_cmnd *scp, 2275 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2276 struct megasas_cmd_fusion *cmd, int sge_count) 2277{ 2278 int i, sg_processed; 2279 struct scatterlist *os_sgl; 2280 struct fusion_context *fusion; 2281 2282 fusion = instance->ctrl_context; 2283 2284 if (instance->adapter_type >= INVADER_SERIES) { 2285 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; 2286 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 2287 sgl_ptr_end->Flags = 0; 2288 } 2289 2290 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 2291 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); 2292 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); 2293 sgl_ptr->Flags = 0; 2294 if (instance->adapter_type >= INVADER_SERIES) 2295 if (i == sge_count - 1) 2296 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; 2297 sgl_ptr++; 2298 sg_processed = i + 1; 2299 2300 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && 2301 (sge_count > fusion->max_sge_in_main_msg)) { 2302 2303 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; 2304 if (instance->adapter_type >= INVADER_SERIES) { 2305 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2306 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != 2307 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) 2308 cmd->io_request->ChainOffset = 2309 fusion-> 2310 chain_offset_io_request; 2311 else 2312 cmd->io_request->ChainOffset = 0; 2313 } else 2314 cmd->io_request->ChainOffset = 2315 fusion->chain_offset_io_request; 2316 2317 sg_chain = sgl_ptr; 2318 /* Prepare chain element */ 2319 sg_chain->NextChainOffset = 0; 2320 if (instance->adapter_type >= INVADER_SERIES) 2321 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; 2322 else 2323 sg_chain->Flags = 2324 (IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2325 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); 2326 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); 2327 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); 2328 2329 sgl_ptr = 2330 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; 2331 memset(sgl_ptr, 0, instance->max_chain_frame_sz); 2332 } 2333 } 2334} 2335 2336/** 2337 * megasas_make_sgl - Build Scatter Gather List(SGLs) 2338 * @scp: SCSI command pointer 2339 * @instance: Soft instance of controller 2340 * @cmd: Fusion command pointer 2341 * 2342 * This function will build sgls based on device type. 2343 * For nvme drives, there is different way of building sgls in nvme native 2344 * format- PRPs(Physical Region Page). 2345 * 2346 * Returns the number of sg lists actually used, zero if the sg lists 2347 * is NULL, or -ENOMEM if the mapping failed 2348 */ 2349static 2350int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, 2351 struct megasas_cmd_fusion *cmd) 2352{ 2353 int sge_count; 2354 bool build_prp = false; 2355 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; 2356 2357 sge_count = scsi_dma_map(scp); 2358 2359 if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) 2360 return sge_count; 2361 2362 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; 2363 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2364 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && 2365 (cmd->pd_interface == NVME_PD)) 2366 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, 2367 cmd, sge_count); 2368 2369 if (!build_prp) 2370 megasas_make_sgl_fusion(instance, scp, sgl_chain64, 2371 cmd, sge_count); 2372 2373 return sge_count; 2374} 2375 2376/** 2377 * megasas_set_pd_lba - Sets PD LBA 2378 * @io_request: IO request 2379 * @cdb_len: cdb length 2380 * @io_info: IO information 2381 * @scp: SCSI command 2382 * @local_map_ptr: Raid map 2383 * @ref_tag: Primary reference tag 2384 * 2385 * Used to set the PD LBA in CDB for FP IOs 2386 */ 2387static void 2388megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, 2389 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, 2390 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) 2391{ 2392 struct MR_LD_RAID *raid; 2393 u16 ld; 2394 u64 start_blk = io_info->pdBlock; 2395 u8 *cdb = io_request->CDB.CDB32; 2396 u32 num_blocks = io_info->numBlocks; 2397 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; 2398 2399 /* Check if T10 PI (DIF) is enabled for this LD */ 2400 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); 2401 raid = MR_LdRaidGet(ld, local_map_ptr); 2402 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { 2403 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2404 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; 2405 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; 2406 2407 if (scp->sc_data_direction == DMA_FROM_DEVICE) 2408 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; 2409 else 2410 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; 2411 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; 2412 2413 /* LBA */ 2414 cdb[12] = (u8)((start_blk >> 56) & 0xff); 2415 cdb[13] = (u8)((start_blk >> 48) & 0xff); 2416 cdb[14] = (u8)((start_blk >> 40) & 0xff); 2417 cdb[15] = (u8)((start_blk >> 32) & 0xff); 2418 cdb[16] = (u8)((start_blk >> 24) & 0xff); 2419 cdb[17] = (u8)((start_blk >> 16) & 0xff); 2420 cdb[18] = (u8)((start_blk >> 8) & 0xff); 2421 cdb[19] = (u8)(start_blk & 0xff); 2422 2423 /* Logical block reference tag */ 2424 io_request->CDB.EEDP32.PrimaryReferenceTag = 2425 cpu_to_be32(ref_tag); 2426 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); 2427 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ 2428 2429 /* Transfer length */ 2430 cdb[28] = (u8)((num_blocks >> 24) & 0xff); 2431 cdb[29] = (u8)((num_blocks >> 16) & 0xff); 2432 cdb[30] = (u8)((num_blocks >> 8) & 0xff); 2433 cdb[31] = (u8)(num_blocks & 0xff); 2434 2435 /* set SCSI IO EEDPFlags */ 2436 if (scp->sc_data_direction == DMA_FROM_DEVICE) { 2437 io_request->EEDPFlags = cpu_to_le16( 2438 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2439 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | 2440 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | 2441 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | 2442 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | 2443 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); 2444 } else { 2445 io_request->EEDPFlags = cpu_to_le16( 2446 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2447 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); 2448 } 2449 io_request->Control |= cpu_to_le32((0x4 << 26)); 2450 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); 2451 } else { 2452 /* Some drives don't support 16/12 byte CDB's, convert to 10 */ 2453 if (((cdb_len == 12) || (cdb_len == 16)) && 2454 (start_blk <= 0xffffffff)) { 2455 if (cdb_len == 16) { 2456 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; 2457 flagvals = cdb[1]; 2458 groupnum = cdb[14]; 2459 control = cdb[15]; 2460 } else { 2461 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; 2462 flagvals = cdb[1]; 2463 groupnum = cdb[10]; 2464 control = cdb[11]; 2465 } 2466 2467 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2468 2469 cdb[0] = opcode; 2470 cdb[1] = flagvals; 2471 cdb[6] = groupnum; 2472 cdb[9] = control; 2473 2474 /* Transfer length */ 2475 cdb[8] = (u8)(num_blocks & 0xff); 2476 cdb[7] = (u8)((num_blocks >> 8) & 0xff); 2477 2478 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ 2479 cdb_len = 10; 2480 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { 2481 /* Convert to 16 byte CDB for large LBA's */ 2482 switch (cdb_len) { 2483 case 6: 2484 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; 2485 control = cdb[5]; 2486 break; 2487 case 10: 2488 opcode = 2489 cdb[0] == READ_10 ? READ_16 : WRITE_16; 2490 flagvals = cdb[1]; 2491 groupnum = cdb[6]; 2492 control = cdb[9]; 2493 break; 2494 case 12: 2495 opcode = 2496 cdb[0] == READ_12 ? READ_16 : WRITE_16; 2497 flagvals = cdb[1]; 2498 groupnum = cdb[10]; 2499 control = cdb[11]; 2500 break; 2501 } 2502 2503 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2504 2505 cdb[0] = opcode; 2506 cdb[1] = flagvals; 2507 cdb[14] = groupnum; 2508 cdb[15] = control; 2509 2510 /* Transfer length */ 2511 cdb[13] = (u8)(num_blocks & 0xff); 2512 cdb[12] = (u8)((num_blocks >> 8) & 0xff); 2513 cdb[11] = (u8)((num_blocks >> 16) & 0xff); 2514 cdb[10] = (u8)((num_blocks >> 24) & 0xff); 2515 2516 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ 2517 cdb_len = 16; 2518 } 2519 2520 /* Normal case, just load LBA here */ 2521 switch (cdb_len) { 2522 case 6: 2523 { 2524 u8 val = cdb[1] & 0xE0; 2525 cdb[3] = (u8)(start_blk & 0xff); 2526 cdb[2] = (u8)((start_blk >> 8) & 0xff); 2527 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); 2528 break; 2529 } 2530 case 10: 2531 cdb[5] = (u8)(start_blk & 0xff); 2532 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2533 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2534 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2535 break; 2536 case 12: 2537 cdb[5] = (u8)(start_blk & 0xff); 2538 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2539 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2540 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2541 break; 2542 case 16: 2543 cdb[9] = (u8)(start_blk & 0xff); 2544 cdb[8] = (u8)((start_blk >> 8) & 0xff); 2545 cdb[7] = (u8)((start_blk >> 16) & 0xff); 2546 cdb[6] = (u8)((start_blk >> 24) & 0xff); 2547 cdb[5] = (u8)((start_blk >> 32) & 0xff); 2548 cdb[4] = (u8)((start_blk >> 40) & 0xff); 2549 cdb[3] = (u8)((start_blk >> 48) & 0xff); 2550 cdb[2] = (u8)((start_blk >> 56) & 0xff); 2551 break; 2552 } 2553 } 2554} 2555 2556/** 2557 * megasas_stream_detect - stream detection on read and and write IOs 2558 * @instance: Adapter soft state 2559 * @cmd: Command to be prepared 2560 * @io_info: IO Request info 2561 * 2562 */ 2563 2564/** stream detection on read and and write IOs */ 2565static void megasas_stream_detect(struct megasas_instance *instance, 2566 struct megasas_cmd_fusion *cmd, 2567 struct IO_REQUEST_INFO *io_info) 2568{ 2569 struct fusion_context *fusion = instance->ctrl_context; 2570 u32 device_id = io_info->ldTgtId; 2571 struct LD_STREAM_DETECT *current_ld_sd 2572 = fusion->stream_detect_by_ld[device_id]; 2573 u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; 2574 u32 shifted_values, unshifted_values; 2575 u32 index_value_mask, shifted_values_mask; 2576 int i; 2577 bool is_read_ahead = false; 2578 struct STREAM_DETECT *current_sd; 2579 /* find possible stream */ 2580 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { 2581 stream_num = (*track_stream >> 2582 (i * BITS_PER_INDEX_STREAM)) & 2583 STREAM_MASK; 2584 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2585 /* if we found a stream, update the raid 2586 * context and also update the mruBitMap 2587 */ 2588 /* boundary condition */ 2589 if ((current_sd->next_seq_lba) && 2590 (io_info->ldStartBlock >= current_sd->next_seq_lba) && 2591 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && 2592 (current_sd->is_read == io_info->isRead)) { 2593 2594 if ((io_info->ldStartBlock != current_sd->next_seq_lba) && 2595 ((!io_info->isRead) || (!is_read_ahead))) 2596 /* 2597 * Once the API is available we need to change this. 2598 * At this point we are not allowing any gap 2599 */ 2600 continue; 2601 2602 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); 2603 current_sd->next_seq_lba = 2604 io_info->ldStartBlock + io_info->numBlocks; 2605 /* 2606 * update the mruBitMap LRU 2607 */ 2608 shifted_values_mask = 2609 (1 << i * BITS_PER_INDEX_STREAM) - 1; 2610 shifted_values = ((*track_stream & shifted_values_mask) 2611 << BITS_PER_INDEX_STREAM); 2612 index_value_mask = 2613 STREAM_MASK << i * BITS_PER_INDEX_STREAM; 2614 unshifted_values = 2615 *track_stream & ~(shifted_values_mask | 2616 index_value_mask); 2617 *track_stream = 2618 unshifted_values | shifted_values | stream_num; 2619 return; 2620 } 2621 } 2622 /* 2623 * if we did not find any stream, create a new one 2624 * from the least recently used 2625 */ 2626 stream_num = (*track_stream >> 2627 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & 2628 STREAM_MASK; 2629 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2630 current_sd->is_read = io_info->isRead; 2631 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; 2632 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); 2633 return; 2634} 2635 2636/** 2637 * megasas_set_raidflag_cpu_affinity - This function sets the cpu 2638 * affinity (cpu of the controller) and raid_flags in the raid context 2639 * based on IO type. 2640 * 2641 * @fusion: Fusion context 2642 * @praid_context: IO RAID context 2643 * @raid: LD raid map 2644 * @fp_possible: Is fast path possible? 2645 * @is_read: Is read IO? 2646 * @scsi_buff_len: SCSI command buffer length 2647 * 2648 */ 2649static void 2650megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion, 2651 union RAID_CONTEXT_UNION *praid_context, 2652 struct MR_LD_RAID *raid, bool fp_possible, 2653 u8 is_read, u32 scsi_buff_len) 2654{ 2655 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2656 struct RAID_CONTEXT_G35 *rctx_g35; 2657 2658 rctx_g35 = &praid_context->raid_context_g35; 2659 if (fp_possible) { 2660 if (is_read) { 2661 if ((raid->cpuAffinity.pdRead.cpu0) && 2662 (raid->cpuAffinity.pdRead.cpu1)) 2663 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2664 else if (raid->cpuAffinity.pdRead.cpu1) 2665 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2666 } else { 2667 if ((raid->cpuAffinity.pdWrite.cpu0) && 2668 (raid->cpuAffinity.pdWrite.cpu1)) 2669 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2670 else if (raid->cpuAffinity.pdWrite.cpu1) 2671 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2672 /* Fast path cache by pass capable R0/R1 VD */ 2673 if ((raid->level <= 1) && 2674 (raid->capability.fp_cache_bypass_capable)) { 2675 rctx_g35->routing_flags |= 2676 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); 2677 rctx_g35->raid_flags = 2678 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS 2679 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2680 } 2681 } 2682 } else { 2683 if (is_read) { 2684 if ((raid->cpuAffinity.ldRead.cpu0) && 2685 (raid->cpuAffinity.ldRead.cpu1)) 2686 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2687 else if (raid->cpuAffinity.ldRead.cpu1) 2688 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2689 } else { 2690 if ((raid->cpuAffinity.ldWrite.cpu0) && 2691 (raid->cpuAffinity.ldWrite.cpu1)) 2692 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2693 else if (raid->cpuAffinity.ldWrite.cpu1) 2694 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2695 2696 if (is_stream_detected(rctx_g35) && 2697 ((raid->level == 5) || (raid->level == 6)) && 2698 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && 2699 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) 2700 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2701 } 2702 } 2703 2704 rctx_g35->routing_flags |= 2705 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2706 2707 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2708 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. 2709 * IO Subtype is not bitmap. 2710 */ 2711 if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) && 2712 (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) { 2713 praid_context->raid_context_g35.raid_flags = 2714 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2715 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2716 } 2717} 2718 2719/** 2720 * megasas_build_ldio_fusion - Prepares IOs to devices 2721 * @instance: Adapter soft state 2722 * @scp: SCSI command 2723 * @cmd: Command to be prepared 2724 * 2725 * Prepares the io_request and chain elements (sg_frame) for IO 2726 * The IO can be for PD (Fast Path) or LD 2727 */ 2728static void 2729megasas_build_ldio_fusion(struct megasas_instance *instance, 2730 struct scsi_cmnd *scp, 2731 struct megasas_cmd_fusion *cmd) 2732{ 2733 bool fp_possible; 2734 u16 ld; 2735 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; 2736 u32 scsi_buff_len; 2737 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2738 struct IO_REQUEST_INFO io_info; 2739 struct fusion_context *fusion; 2740 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2741 u8 *raidLUN; 2742 unsigned long spinlock_flags; 2743 struct MR_LD_RAID *raid = NULL; 2744 struct MR_PRIV_DEVICE *mrdev_priv; 2745 struct RAID_CONTEXT *rctx; 2746 struct RAID_CONTEXT_G35 *rctx_g35; 2747 2748 device_id = MEGASAS_DEV_INDEX(scp); 2749 2750 fusion = instance->ctrl_context; 2751 2752 io_request = cmd->io_request; 2753 rctx = &io_request->RaidContext.raid_context; 2754 rctx_g35 = &io_request->RaidContext.raid_context_g35; 2755 2756 rctx->virtual_disk_tgt_id = cpu_to_le16(device_id); 2757 rctx->status = 0; 2758 rctx->ex_status = 0; 2759 2760 start_lba_lo = 0; 2761 start_lba_hi = 0; 2762 fp_possible = false; 2763 2764 /* 2765 * 6-byte READ(0x08) or WRITE(0x0A) cdb 2766 */ 2767 if (scp->cmd_len == 6) { 2768 datalength = (u32) scp->cmnd[4]; 2769 start_lba_lo = ((u32) scp->cmnd[1] << 16) | 2770 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 2771 2772 start_lba_lo &= 0x1FFFFF; 2773 } 2774 2775 /* 2776 * 10-byte READ(0x28) or WRITE(0x2A) cdb 2777 */ 2778 else if (scp->cmd_len == 10) { 2779 datalength = (u32) scp->cmnd[8] | 2780 ((u32) scp->cmnd[7] << 8); 2781 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2782 ((u32) scp->cmnd[3] << 16) | 2783 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2784 } 2785 2786 /* 2787 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 2788 */ 2789 else if (scp->cmd_len == 12) { 2790 datalength = ((u32) scp->cmnd[6] << 24) | 2791 ((u32) scp->cmnd[7] << 16) | 2792 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2793 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2794 ((u32) scp->cmnd[3] << 16) | 2795 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2796 } 2797 2798 /* 2799 * 16-byte READ(0x88) or WRITE(0x8A) cdb 2800 */ 2801 else if (scp->cmd_len == 16) { 2802 datalength = ((u32) scp->cmnd[10] << 24) | 2803 ((u32) scp->cmnd[11] << 16) | 2804 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 2805 start_lba_lo = ((u32) scp->cmnd[6] << 24) | 2806 ((u32) scp->cmnd[7] << 16) | 2807 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2808 2809 start_lba_hi = ((u32) scp->cmnd[2] << 24) | 2810 ((u32) scp->cmnd[3] << 16) | 2811 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2812 } 2813 2814 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); 2815 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; 2816 io_info.numBlocks = datalength; 2817 io_info.ldTgtId = device_id; 2818 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2819 scsi_buff_len = scsi_bufflen(scp); 2820 io_request->DataLength = cpu_to_le32(scsi_buff_len); 2821 io_info.data_arms = 1; 2822 2823 if (scp->sc_data_direction == DMA_FROM_DEVICE) 2824 io_info.isRead = 1; 2825 2826 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2827 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2828 2829 if (ld < instance->fw_supported_vd_count) 2830 raid = MR_LdRaidGet(ld, local_map_ptr); 2831 2832 if (!raid || (!fusion->fast_path_io)) { 2833 rctx->reg_lock_flags = 0; 2834 fp_possible = false; 2835 } else { 2836 if (MR_BuildRaidContext(instance, &io_info, rctx, 2837 local_map_ptr, &raidLUN)) 2838 fp_possible = (io_info.fpOkForIo > 0) ? true : false; 2839 } 2840 2841 megasas_get_msix_index(instance, scp, cmd, io_info.data_arms); 2842 2843 if (instance->adapter_type >= VENTURA_SERIES) { 2844 /* FP for Optimal raid level 1. 2845 * All large RAID-1 writes (> 32 KiB, both WT and WB modes) 2846 * are built by the driver as LD I/Os. 2847 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os 2848 * (there is never a reason to process these as buffered writes) 2849 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os 2850 * with the SLD bit asserted. 2851 */ 2852 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 2853 mrdev_priv = scp->device->hostdata; 2854 2855 if (atomic_inc_return(&instance->fw_outstanding) > 2856 (instance->host->can_queue)) { 2857 fp_possible = false; 2858 atomic_dec(&instance->fw_outstanding); 2859 } else if (fusion->pcie_bw_limitation && 2860 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || 2861 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) { 2862 fp_possible = false; 2863 atomic_dec(&instance->fw_outstanding); 2864 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2865 atomic_set(&mrdev_priv->r1_ldio_hint, 2866 instance->r1_ldio_hint_default); 2867 } 2868 } 2869 2870 if (!fp_possible || 2871 (io_info.isRead && io_info.ra_capable)) { 2872 spin_lock_irqsave(&instance->stream_lock, 2873 spinlock_flags); 2874 megasas_stream_detect(instance, cmd, &io_info); 2875 spin_unlock_irqrestore(&instance->stream_lock, 2876 spinlock_flags); 2877 /* In ventura if stream detected for a read and it is 2878 * read ahead capable make this IO as LDIO 2879 */ 2880 if (is_stream_detected(rctx_g35)) 2881 fp_possible = false; 2882 } 2883 2884 /* If raid is NULL, set CPU affinity to default CPU0 */ 2885 if (raid) 2886 megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext, 2887 raid, fp_possible, io_info.isRead, 2888 scsi_buff_len); 2889 else 2890 rctx_g35->routing_flags |= 2891 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2892 } 2893 2894 if (fp_possible) { 2895 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, 2896 local_map_ptr, start_lba_lo); 2897 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2898 cmd->request_desc->SCSIIO.RequestFlags = 2899 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO 2900 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2901 if (instance->adapter_type == INVADER_SERIES) { 2902 rctx->type = MPI2_TYPE_CUDA; 2903 rctx->nseg = 0x1; 2904 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2905 rctx->reg_lock_flags |= 2906 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | 2907 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2908 } else if (instance->adapter_type >= VENTURA_SERIES) { 2909 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT); 2910 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2911 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2912 io_request->IoFlags |= 2913 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2914 } 2915 if (fusion->load_balance_info && 2916 (fusion->load_balance_info[device_id].loadBalanceFlag) && 2917 (io_info.isRead)) { 2918 io_info.devHandle = 2919 get_updated_dev_handle(instance, 2920 &fusion->load_balance_info[device_id], 2921 &io_info, local_map_ptr); 2922 megasas_priv(scp)->status |= MEGASAS_LOAD_BALANCE_FLAG; 2923 cmd->pd_r1_lb = io_info.pd_after_lb; 2924 if (instance->adapter_type >= VENTURA_SERIES) 2925 rctx_g35->span_arm = io_info.span_arm; 2926 else 2927 rctx->span_arm = io_info.span_arm; 2928 2929 } else 2930 megasas_priv(scp)->status &= ~MEGASAS_LOAD_BALANCE_FLAG; 2931 2932 if (instance->adapter_type >= VENTURA_SERIES) 2933 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; 2934 else 2935 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2936 2937 if ((raidLUN[0] == 1) && 2938 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { 2939 instance->dev_handle = !(instance->dev_handle); 2940 io_info.devHandle = 2941 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; 2942 } 2943 2944 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; 2945 io_request->DevHandle = io_info.devHandle; 2946 cmd->pd_interface = io_info.pd_interface; 2947 /* populate the LUN field */ 2948 memcpy(io_request->LUN, raidLUN, 8); 2949 } else { 2950 rctx->timeout_value = 2951 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); 2952 cmd->request_desc->SCSIIO.RequestFlags = 2953 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 2954 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2955 if (instance->adapter_type == INVADER_SERIES) { 2956 if (io_info.do_fp_rlbypass || 2957 (rctx->reg_lock_flags == REGION_TYPE_UNUSED)) 2958 cmd->request_desc->SCSIIO.RequestFlags = 2959 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2960 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2961 rctx->type = MPI2_TYPE_CUDA; 2962 rctx->reg_lock_flags |= 2963 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | 2964 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2965 rctx->nseg = 0x1; 2966 } else if (instance->adapter_type >= VENTURA_SERIES) { 2967 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2968 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT); 2969 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2970 } 2971 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2972 io_request->DevHandle = cpu_to_le16(device_id); 2973 2974 } /* Not FP */ 2975} 2976 2977/** 2978 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk 2979 * @instance: Adapter soft state 2980 * @scmd: SCSI command 2981 * @cmd: Command to be prepared 2982 * 2983 * Prepares the io_request frame for non-rw io cmds for vd. 2984 */ 2985static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, 2986 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) 2987{ 2988 u32 device_id; 2989 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2990 u16 ld; 2991 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2992 struct fusion_context *fusion = instance->ctrl_context; 2993 u8 span, physArm; 2994 __le16 devHandle; 2995 u32 arRef, pd; 2996 struct MR_LD_RAID *raid; 2997 struct RAID_CONTEXT *pRAID_Context; 2998 u8 fp_possible = 1; 2999 3000 io_request = cmd->io_request; 3001 device_id = MEGASAS_DEV_INDEX(scmd); 3002 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 3003 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 3004 /* get RAID_Context pointer */ 3005 pRAID_Context = &io_request->RaidContext.raid_context; 3006 /* Check with FW team */ 3007 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3008 pRAID_Context->reg_lock_row_lba = 0; 3009 pRAID_Context->reg_lock_length = 0; 3010 3011 if (fusion->fast_path_io && ( 3012 device_id < instance->fw_supported_vd_count)) { 3013 3014 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 3015 if (ld >= instance->fw_supported_vd_count - 1) 3016 fp_possible = 0; 3017 else { 3018 raid = MR_LdRaidGet(ld, local_map_ptr); 3019 if (!(raid->capability.fpNonRWCapable)) 3020 fp_possible = 0; 3021 } 3022 } else 3023 fp_possible = 0; 3024 3025 if (!fp_possible) { 3026 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 3027 io_request->DevHandle = cpu_to_le16(device_id); 3028 io_request->LUN[1] = scmd->device->lun; 3029 pRAID_Context->timeout_value = 3030 cpu_to_le16(scsi_cmd_to_rq(scmd)->timeout / HZ); 3031 cmd->request_desc->SCSIIO.RequestFlags = 3032 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3033 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3034 } else { 3035 3036 /* set RAID context values */ 3037 pRAID_Context->config_seq_num = raid->seqNum; 3038 if (instance->adapter_type < VENTURA_SERIES) 3039 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; 3040 pRAID_Context->timeout_value = 3041 cpu_to_le16(raid->fpIoTimeoutForLd); 3042 3043 /* get the DevHandle for the PD (since this is 3044 fpNonRWCapable, this is a single disk RAID0) */ 3045 span = physArm = 0; 3046 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); 3047 pd = MR_ArPdGet(arRef, physArm, local_map_ptr); 3048 devHandle = MR_PdDevHandleGet(pd, local_map_ptr); 3049 3050 /* build request descriptor */ 3051 cmd->request_desc->SCSIIO.RequestFlags = 3052 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3053 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3054 cmd->request_desc->SCSIIO.DevHandle = devHandle; 3055 3056 /* populate the LUN field */ 3057 memcpy(io_request->LUN, raid->LUN, 8); 3058 3059 /* build the raidScsiIO structure */ 3060 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3061 io_request->DevHandle = devHandle; 3062 } 3063} 3064 3065/** 3066 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd 3067 * @instance: Adapter soft state 3068 * @scmd: SCSI command 3069 * @cmd: Command to be prepared 3070 * @fp_possible: parameter to detect fast path or firmware path io. 3071 * 3072 * Prepares the io_request frame for rw/non-rw io cmds for syspds 3073 */ 3074static void 3075megasas_build_syspd_fusion(struct megasas_instance *instance, 3076 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, 3077 bool fp_possible) 3078{ 3079 u32 device_id; 3080 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 3081 u16 pd_index = 0; 3082 u16 os_timeout_value; 3083 u16 timeout_limit; 3084 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 3085 struct RAID_CONTEXT *pRAID_Context; 3086 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 3087 struct MR_PRIV_DEVICE *mr_device_priv_data; 3088 struct fusion_context *fusion = instance->ctrl_context; 3089 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; 3090 3091 device_id = MEGASAS_DEV_INDEX(scmd); 3092 pd_index = MEGASAS_PD_INDEX(scmd); 3093 os_timeout_value = scsi_cmd_to_rq(scmd)->timeout / HZ; 3094 mr_device_priv_data = scmd->device->hostdata; 3095 cmd->pd_interface = mr_device_priv_data->interface_type; 3096 3097 io_request = cmd->io_request; 3098 /* get RAID_Context pointer */ 3099 pRAID_Context = &io_request->RaidContext.raid_context; 3100 pRAID_Context->reg_lock_flags = 0; 3101 pRAID_Context->reg_lock_row_lba = 0; 3102 pRAID_Context->reg_lock_length = 0; 3103 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 3104 io_request->LUN[1] = scmd->device->lun; 3105 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD 3106 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; 3107 3108 /* If FW supports PD sequence number */ 3109 if (instance->support_seqnum_jbod_fp) { 3110 if (instance->use_seqnum_jbod_fp && 3111 instance->pd_list[pd_index].driveType == TYPE_DISK) { 3112 3113 /* More than 256 PD/JBOD support for Ventura */ 3114 if (instance->support_morethan256jbod) 3115 pRAID_Context->virtual_disk_tgt_id = 3116 pd_sync->seq[pd_index].pd_target_id; 3117 else 3118 pRAID_Context->virtual_disk_tgt_id = 3119 cpu_to_le16(device_id + 3120 (MAX_PHYSICAL_DEVICES - 1)); 3121 pRAID_Context->config_seq_num = 3122 pd_sync->seq[pd_index].seqNum; 3123 io_request->DevHandle = 3124 pd_sync->seq[pd_index].devHandle; 3125 if (instance->adapter_type >= VENTURA_SERIES) { 3126 io_request->RaidContext.raid_context_g35.routing_flags |= 3127 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 3128 io_request->RaidContext.raid_context_g35.nseg_type |= 3129 (1 << RAID_CONTEXT_NSEG_SHIFT); 3130 io_request->RaidContext.raid_context_g35.nseg_type |= 3131 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 3132 } else { 3133 pRAID_Context->type = MPI2_TYPE_CUDA; 3134 pRAID_Context->nseg = 0x1; 3135 pRAID_Context->reg_lock_flags |= 3136 (MR_RL_FLAGS_SEQ_NUM_ENABLE | 3137 MR_RL_FLAGS_GRANT_DESTINATION_CUDA); 3138 } 3139 } else { 3140 pRAID_Context->virtual_disk_tgt_id = 3141 cpu_to_le16(device_id + 3142 (MAX_PHYSICAL_DEVICES - 1)); 3143 pRAID_Context->config_seq_num = 0; 3144 io_request->DevHandle = cpu_to_le16(0xFFFF); 3145 } 3146 } else { 3147 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3148 pRAID_Context->config_seq_num = 0; 3149 3150 if (fusion->fast_path_io) { 3151 local_map_ptr = 3152 fusion->ld_drv_map[(instance->map_id & 1)]; 3153 io_request->DevHandle = 3154 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; 3155 } else { 3156 io_request->DevHandle = cpu_to_le16(0xFFFF); 3157 } 3158 } 3159 3160 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; 3161 3162 megasas_get_msix_index(instance, scmd, cmd, 1); 3163 3164 if (!fp_possible) { 3165 /* system pd firmware path */ 3166 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 3167 cmd->request_desc->SCSIIO.RequestFlags = 3168 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3169 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3170 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); 3171 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3172 } else { 3173 if (os_timeout_value) 3174 os_timeout_value++; 3175 3176 /* system pd Fast Path */ 3177 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3178 timeout_limit = (scmd->device->type == TYPE_DISK) ? 3179 255 : 0xFFFF; 3180 pRAID_Context->timeout_value = 3181 cpu_to_le16((os_timeout_value > timeout_limit) ? 3182 timeout_limit : os_timeout_value); 3183 if (instance->adapter_type >= INVADER_SERIES) 3184 io_request->IoFlags |= 3185 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 3186 3187 cmd->request_desc->SCSIIO.RequestFlags = 3188 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3189 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3190 } 3191} 3192 3193/** 3194 * megasas_build_io_fusion - Prepares IOs to devices 3195 * @instance: Adapter soft state 3196 * @scp: SCSI command 3197 * @cmd: Command to be prepared 3198 * 3199 * Invokes helper functions to prepare request frames 3200 * and sets flags appropriate for IO/Non-IO cmd 3201 */ 3202static int 3203megasas_build_io_fusion(struct megasas_instance *instance, 3204 struct scsi_cmnd *scp, 3205 struct megasas_cmd_fusion *cmd) 3206{ 3207 int sge_count; 3208 u16 pd_index = 0; 3209 u8 drive_type = 0; 3210 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; 3211 struct MR_PRIV_DEVICE *mr_device_priv_data; 3212 mr_device_priv_data = scp->device->hostdata; 3213 3214 /* Zero out some fields so they don't get reused */ 3215 memset(io_request->LUN, 0x0, 8); 3216 io_request->CDB.EEDP32.PrimaryReferenceTag = 0; 3217 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; 3218 io_request->EEDPFlags = 0; 3219 io_request->Control = 0; 3220 io_request->EEDPBlockSize = 0; 3221 io_request->ChainOffset = 0; 3222 io_request->RaidContext.raid_context.raid_flags = 0; 3223 io_request->RaidContext.raid_context.type = 0; 3224 io_request->RaidContext.raid_context.nseg = 0; 3225 3226 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); 3227 /* 3228 * Just the CDB length,rest of the Flags are zero 3229 * This will be modified for FP in build_ldio_fusion 3230 */ 3231 io_request->IoFlags = cpu_to_le16(scp->cmd_len); 3232 3233 switch (megasas_cmd_type(scp)) { 3234 case READ_WRITE_LDIO: 3235 megasas_build_ldio_fusion(instance, scp, cmd); 3236 break; 3237 case NON_READ_WRITE_LDIO: 3238 megasas_build_ld_nonrw_fusion(instance, scp, cmd); 3239 break; 3240 case READ_WRITE_SYSPDIO: 3241 megasas_build_syspd_fusion(instance, scp, cmd, true); 3242 break; 3243 case NON_READ_WRITE_SYSPDIO: 3244 pd_index = MEGASAS_PD_INDEX(scp); 3245 drive_type = instance->pd_list[pd_index].driveType; 3246 if ((instance->secure_jbod_support || 3247 mr_device_priv_data->is_tm_capable) || 3248 (instance->adapter_type >= VENTURA_SERIES && 3249 drive_type == TYPE_ENCLOSURE)) 3250 megasas_build_syspd_fusion(instance, scp, cmd, false); 3251 else 3252 megasas_build_syspd_fusion(instance, scp, cmd, true); 3253 break; 3254 default: 3255 break; 3256 } 3257 3258 /* 3259 * Construct SGL 3260 */ 3261 3262 sge_count = megasas_make_sgl(instance, scp, cmd); 3263 3264 if (sge_count > instance->max_num_sge || (sge_count < 0)) { 3265 dev_err(&instance->pdev->dev, 3266 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", 3267 __func__, __LINE__, sge_count, instance->max_num_sge); 3268 return 1; 3269 } 3270 3271 if (instance->adapter_type >= VENTURA_SERIES) { 3272 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); 3273 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); 3274 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); 3275 } else { 3276 /* numSGE store lower 8 bit of sge_count. 3277 * numSGEExt store higher 8 bit of sge_count 3278 */ 3279 io_request->RaidContext.raid_context.num_sge = sge_count; 3280 io_request->RaidContext.raid_context.num_sge_ext = 3281 (u8)(sge_count >> 8); 3282 } 3283 3284 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); 3285 3286 if (scp->sc_data_direction == DMA_TO_DEVICE) 3287 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); 3288 else if (scp->sc_data_direction == DMA_FROM_DEVICE) 3289 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); 3290 3291 io_request->SGLOffset0 = 3292 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; 3293 3294 io_request->SenseBufferLowAddress = 3295 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 3296 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 3297 3298 cmd->scmd = scp; 3299 megasas_priv(scp)->cmd_priv = cmd; 3300 3301 return 0; 3302} 3303 3304static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3305megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) 3306{ 3307 u8 *p; 3308 struct fusion_context *fusion; 3309 3310 fusion = instance->ctrl_context; 3311 p = fusion->req_frames_desc + 3312 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; 3313 3314 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; 3315} 3316 3317 3318/* megasas_prepate_secondRaid1_IO 3319 * It prepares the raid 1 second IO 3320 */ 3321static void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, 3322 struct megasas_cmd_fusion *cmd, 3323 struct megasas_cmd_fusion *r1_cmd) 3324{ 3325 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; 3326 struct fusion_context *fusion; 3327 fusion = instance->ctrl_context; 3328 req_desc = cmd->request_desc; 3329 /* copy the io request frame as well as 8 SGEs data for r1 command*/ 3330 memcpy(r1_cmd->io_request, cmd->io_request, 3331 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); 3332 memcpy(r1_cmd->io_request->SGLs, cmd->io_request->SGLs, 3333 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); 3334 /*sense buffer is different for r1 command*/ 3335 r1_cmd->io_request->SenseBufferLowAddress = 3336 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr)); 3337 r1_cmd->scmd = cmd->scmd; 3338 req_desc2 = megasas_get_request_descriptor(instance, 3339 (r1_cmd->index - 1)); 3340 req_desc2->Words = 0; 3341 r1_cmd->request_desc = req_desc2; 3342 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); 3343 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; 3344 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; 3345 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; 3346 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; 3347 cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid = 3348 cpu_to_le16(r1_cmd->index); 3349 r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid = 3350 cpu_to_le16(cmd->index); 3351 /*MSIxIndex of both commands request descriptors should be same*/ 3352 r1_cmd->request_desc->SCSIIO.MSIxIndex = 3353 cmd->request_desc->SCSIIO.MSIxIndex; 3354 /*span arm is different for r1 cmd*/ 3355 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = 3356 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; 3357} 3358 3359/** 3360 * megasas_build_and_issue_cmd_fusion -Main routine for building and 3361 * issuing non IOCTL cmd 3362 * @instance: Adapter soft state 3363 * @scmd: pointer to scsi cmd from OS 3364 */ 3365static u32 3366megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, 3367 struct scsi_cmnd *scmd) 3368{ 3369 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL; 3370 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3371 u32 index; 3372 3373 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && 3374 instance->ldio_threshold && 3375 (atomic_inc_return(&instance->ldio_outstanding) > 3376 instance->ldio_threshold)) { 3377 atomic_dec(&instance->ldio_outstanding); 3378 return SCSI_MLQUEUE_DEVICE_BUSY; 3379 } 3380 3381 if (atomic_inc_return(&instance->fw_outstanding) > 3382 instance->host->can_queue) { 3383 atomic_dec(&instance->fw_outstanding); 3384 return SCSI_MLQUEUE_HOST_BUSY; 3385 } 3386 3387 cmd = megasas_get_cmd_fusion(instance, scsi_cmd_to_rq(scmd)->tag); 3388 3389 if (!cmd) { 3390 atomic_dec(&instance->fw_outstanding); 3391 return SCSI_MLQUEUE_HOST_BUSY; 3392 } 3393 3394 index = cmd->index; 3395 3396 req_desc = megasas_get_request_descriptor(instance, index-1); 3397 3398 req_desc->Words = 0; 3399 cmd->request_desc = req_desc; 3400 3401 if (megasas_build_io_fusion(instance, scmd, cmd)) { 3402 megasas_return_cmd_fusion(instance, cmd); 3403 dev_err(&instance->pdev->dev, "Error building command\n"); 3404 cmd->request_desc = NULL; 3405 atomic_dec(&instance->fw_outstanding); 3406 return SCSI_MLQUEUE_HOST_BUSY; 3407 } 3408 3409 req_desc = cmd->request_desc; 3410 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3411 3412 if (cmd->io_request->ChainOffset != 0 && 3413 cmd->io_request->ChainOffset != 0xF) 3414 dev_err(&instance->pdev->dev, "The chain offset value is not " 3415 "correct : %x\n", cmd->io_request->ChainOffset); 3416 /* 3417 * if it is raid 1/10 fp write capable. 3418 * try to get second command from pool and construct it. 3419 * From FW, it has confirmed that lba values of two PDs 3420 * corresponds to single R1/10 LD are always same 3421 * 3422 */ 3423 /* driver side count always should be less than max_fw_cmds 3424 * to get new command 3425 */ 3426 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 3427 r1_cmd = megasas_get_cmd_fusion(instance, 3428 scsi_cmd_to_rq(scmd)->tag + instance->max_fw_cmds); 3429 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); 3430 } 3431 3432 3433 /* 3434 * Issue the command to the FW 3435 */ 3436 3437 megasas_sdev_busy_inc(instance, scmd); 3438 megasas_fire_cmd_fusion(instance, req_desc); 3439 3440 if (r1_cmd) 3441 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); 3442 3443 3444 return 0; 3445} 3446 3447/** 3448 * megasas_complete_r1_command - 3449 * completes R1 FP write commands which has valid peer smid 3450 * @instance: Adapter soft state 3451 * @cmd: MPT command frame 3452 * 3453 */ 3454static inline void 3455megasas_complete_r1_command(struct megasas_instance *instance, 3456 struct megasas_cmd_fusion *cmd) 3457{ 3458 u8 *sense, status, ex_status; 3459 u32 data_length; 3460 u16 peer_smid; 3461 struct fusion_context *fusion; 3462 struct megasas_cmd_fusion *r1_cmd = NULL; 3463 struct scsi_cmnd *scmd_local = NULL; 3464 struct RAID_CONTEXT_G35 *rctx_g35; 3465 3466 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; 3467 fusion = instance->ctrl_context; 3468 peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid); 3469 3470 r1_cmd = fusion->cmd_list[peer_smid - 1]; 3471 scmd_local = cmd->scmd; 3472 status = rctx_g35->status; 3473 ex_status = rctx_g35->ex_status; 3474 data_length = cmd->io_request->DataLength; 3475 sense = cmd->sense; 3476 3477 cmd->cmd_completed = true; 3478 3479 /* Check if peer command is completed or not*/ 3480 if (r1_cmd->cmd_completed) { 3481 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; 3482 if (rctx_g35->status != MFI_STAT_OK) { 3483 status = rctx_g35->status; 3484 ex_status = rctx_g35->ex_status; 3485 data_length = r1_cmd->io_request->DataLength; 3486 sense = r1_cmd->sense; 3487 } 3488 3489 megasas_return_cmd_fusion(instance, r1_cmd); 3490 map_cmd_status(fusion, scmd_local, status, ex_status, 3491 le32_to_cpu(data_length), sense); 3492 if (instance->ldio_threshold && 3493 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 3494 atomic_dec(&instance->ldio_outstanding); 3495 megasas_priv(scmd_local)->cmd_priv = NULL; 3496 megasas_return_cmd_fusion(instance, cmd); 3497 scsi_dma_unmap(scmd_local); 3498 megasas_sdev_busy_dec(instance, scmd_local); 3499 scsi_done(scmd_local); 3500 } 3501} 3502 3503/** 3504 * access_irq_context: Access to reply processing 3505 * @irq_context: IRQ context 3506 * 3507 * Synchronize access to reply processing. 3508 * 3509 * Return: true on success, false on failure. 3510 */ 3511static inline 3512bool access_irq_context(struct megasas_irq_context *irq_context) 3513{ 3514 if (!irq_context) 3515 return true; 3516 3517 if (atomic_add_unless(&irq_context->in_used, 1, 1)) 3518 return true; 3519 3520 return false; 3521} 3522 3523/** 3524 * release_irq_context: Release reply processing 3525 * @irq_context: IRQ context 3526 * 3527 * Release access of reply processing. 3528 * 3529 * Return: Nothing. 3530 */ 3531static inline 3532void release_irq_context(struct megasas_irq_context *irq_context) 3533{ 3534 if (irq_context) 3535 atomic_dec(&irq_context->in_used); 3536} 3537 3538/** 3539 * complete_cmd_fusion - Completes command 3540 * @instance: Adapter soft state 3541 * @MSIxIndex: MSI number 3542 * @irq_context: IRQ context 3543 * 3544 * Completes all commands that is in reply descriptor queue 3545 */ 3546static int 3547complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex, 3548 struct megasas_irq_context *irq_context) 3549{ 3550 union MPI2_REPLY_DESCRIPTORS_UNION *desc; 3551 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; 3552 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 3553 struct fusion_context *fusion; 3554 struct megasas_cmd *cmd_mfi; 3555 struct megasas_cmd_fusion *cmd_fusion; 3556 u16 smid, num_completed; 3557 u8 reply_descript_type, *sense, status, extStatus; 3558 u32 device_id, data_length; 3559 union desc_value d_val; 3560 struct LD_LOAD_BALANCE_INFO *lbinfo; 3561 int threshold_reply_count = 0; 3562 struct scsi_cmnd *scmd_local = NULL; 3563 struct MR_TASK_MANAGE_REQUEST *mr_tm_req; 3564 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; 3565 3566 fusion = instance->ctrl_context; 3567 3568 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3569 return IRQ_HANDLED; 3570 3571 if (!access_irq_context(irq_context)) 3572 return 0; 3573 3574 desc = fusion->reply_frames_desc[MSIxIndex] + 3575 fusion->last_reply_idx[MSIxIndex]; 3576 3577 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3578 3579 d_val.word = desc->Words; 3580 3581 reply_descript_type = reply_desc->ReplyFlags & 3582 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3583 3584 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) { 3585 release_irq_context(irq_context); 3586 return IRQ_NONE; 3587 } 3588 3589 num_completed = 0; 3590 3591 while (d_val.u.low != cpu_to_le32(UINT_MAX) && 3592 d_val.u.high != cpu_to_le32(UINT_MAX)) { 3593 3594 smid = le16_to_cpu(reply_desc->SMID); 3595 cmd_fusion = fusion->cmd_list[smid - 1]; 3596 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 3597 cmd_fusion->io_request; 3598 3599 scmd_local = cmd_fusion->scmd; 3600 status = scsi_io_req->RaidContext.raid_context.status; 3601 extStatus = scsi_io_req->RaidContext.raid_context.ex_status; 3602 sense = cmd_fusion->sense; 3603 data_length = scsi_io_req->DataLength; 3604 3605 switch (scsi_io_req->Function) { 3606 case MPI2_FUNCTION_SCSI_TASK_MGMT: 3607 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) 3608 cmd_fusion->io_request; 3609 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) 3610 &mr_tm_req->TmRequest; 3611 dev_dbg(&instance->pdev->dev, "TM completion:" 3612 "type: 0x%x TaskMID: 0x%x\n", 3613 mpi_tm_req->TaskType, mpi_tm_req->TaskMID); 3614 complete(&cmd_fusion->done); 3615 break; 3616 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ 3617 /* Update load balancing info */ 3618 if (fusion->load_balance_info && 3619 (megasas_priv(cmd_fusion->scmd)->status & 3620 MEGASAS_LOAD_BALANCE_FLAG)) { 3621 device_id = MEGASAS_DEV_INDEX(scmd_local); 3622 lbinfo = &fusion->load_balance_info[device_id]; 3623 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); 3624 megasas_priv(cmd_fusion->scmd)->status &= 3625 ~MEGASAS_LOAD_BALANCE_FLAG; 3626 } 3627 fallthrough; /* and complete IO */ 3628 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ 3629 atomic_dec(&instance->fw_outstanding); 3630 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { 3631 map_cmd_status(fusion, scmd_local, status, 3632 extStatus, le32_to_cpu(data_length), 3633 sense); 3634 if (instance->ldio_threshold && 3635 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) 3636 atomic_dec(&instance->ldio_outstanding); 3637 megasas_priv(scmd_local)->cmd_priv = NULL; 3638 megasas_return_cmd_fusion(instance, cmd_fusion); 3639 scsi_dma_unmap(scmd_local); 3640 megasas_sdev_busy_dec(instance, scmd_local); 3641 scsi_done(scmd_local); 3642 } else /* Optimal VD - R1 FP command completion. */ 3643 megasas_complete_r1_command(instance, cmd_fusion); 3644 break; 3645 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ 3646 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3647 /* Poll mode. Dummy free. 3648 * In case of Interrupt mode, caller has reverse check. 3649 */ 3650 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 3651 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 3652 megasas_return_cmd(instance, cmd_mfi); 3653 } else 3654 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3655 break; 3656 } 3657 3658 fusion->last_reply_idx[MSIxIndex]++; 3659 if (fusion->last_reply_idx[MSIxIndex] >= 3660 fusion->reply_q_depth) 3661 fusion->last_reply_idx[MSIxIndex] = 0; 3662 3663 desc->Words = cpu_to_le64(ULLONG_MAX); 3664 num_completed++; 3665 threshold_reply_count++; 3666 3667 /* Get the next reply descriptor */ 3668 if (!fusion->last_reply_idx[MSIxIndex]) 3669 desc = fusion->reply_frames_desc[MSIxIndex]; 3670 else 3671 desc++; 3672 3673 reply_desc = 3674 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3675 3676 d_val.word = desc->Words; 3677 3678 reply_descript_type = reply_desc->ReplyFlags & 3679 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3680 3681 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3682 break; 3683 /* 3684 * Write to reply post host index register after completing threshold 3685 * number of reply counts and still there are more replies in reply queue 3686 * pending to be completed 3687 */ 3688 if (threshold_reply_count >= instance->threshold_reply_count) { 3689 if (instance->msix_combined) 3690 writel(((MSIxIndex & 0x7) << 24) | 3691 fusion->last_reply_idx[MSIxIndex], 3692 instance->reply_post_host_index_addr[MSIxIndex/8]); 3693 else 3694 writel((MSIxIndex << 24) | 3695 fusion->last_reply_idx[MSIxIndex], 3696 instance->reply_post_host_index_addr[0]); 3697 threshold_reply_count = 0; 3698 if (irq_context) { 3699 if (!irq_context->irq_poll_scheduled) { 3700 irq_context->irq_poll_scheduled = true; 3701 irq_context->irq_line_enable = true; 3702 irq_poll_sched(&irq_context->irqpoll); 3703 } 3704 release_irq_context(irq_context); 3705 return num_completed; 3706 } 3707 } 3708 } 3709 3710 if (num_completed) { 3711 wmb(); 3712 if (instance->msix_combined) 3713 writel(((MSIxIndex & 0x7) << 24) | 3714 fusion->last_reply_idx[MSIxIndex], 3715 instance->reply_post_host_index_addr[MSIxIndex/8]); 3716 else 3717 writel((MSIxIndex << 24) | 3718 fusion->last_reply_idx[MSIxIndex], 3719 instance->reply_post_host_index_addr[0]); 3720 megasas_check_and_restore_queue_depth(instance); 3721 } 3722 3723 release_irq_context(irq_context); 3724 3725 return num_completed; 3726} 3727 3728int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num) 3729{ 3730 3731 struct megasas_instance *instance; 3732 int num_entries = 0; 3733 struct fusion_context *fusion; 3734 3735 instance = (struct megasas_instance *)shost->hostdata; 3736 3737 fusion = instance->ctrl_context; 3738 3739 queue_num = queue_num + instance->low_latency_index_start; 3740 3741 if (!atomic_add_unless(&fusion->busy_mq_poll[queue_num], 1, 1)) 3742 return 0; 3743 3744 num_entries = complete_cmd_fusion(instance, queue_num, NULL); 3745 atomic_dec(&fusion->busy_mq_poll[queue_num]); 3746 3747 return num_entries; 3748} 3749 3750/** 3751 * megasas_enable_irq_poll() - enable irqpoll 3752 * @instance: Adapter soft state 3753 */ 3754static void megasas_enable_irq_poll(struct megasas_instance *instance) 3755{ 3756 u32 count, i; 3757 struct megasas_irq_context *irq_ctx; 3758 3759 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3760 3761 for (i = 0; i < count; i++) { 3762 irq_ctx = &instance->irq_context[i]; 3763 irq_poll_enable(&irq_ctx->irqpoll); 3764 } 3765} 3766 3767/** 3768 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter 3769 * @instance_addr: Adapter soft state address 3770 */ 3771static void megasas_sync_irqs(unsigned long instance_addr) 3772{ 3773 u32 count, i; 3774 struct megasas_instance *instance = 3775 (struct megasas_instance *)instance_addr; 3776 struct megasas_irq_context *irq_ctx; 3777 3778 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3779 3780 for (i = 0; i < count; i++) { 3781 synchronize_irq(pci_irq_vector(instance->pdev, i)); 3782 irq_ctx = &instance->irq_context[i]; 3783 irq_poll_disable(&irq_ctx->irqpoll); 3784 if (irq_ctx->irq_poll_scheduled) { 3785 irq_ctx->irq_poll_scheduled = false; 3786 enable_irq(irq_ctx->os_irq); 3787 complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3788 } 3789 } 3790} 3791 3792/** 3793 * megasas_irqpoll() - process a queue for completed reply descriptors 3794 * @irqpoll: IRQ poll structure associated with queue to poll. 3795 * @budget: Threshold of reply descriptors to process per poll. 3796 * 3797 * Return: The number of entries processed. 3798 */ 3799 3800int megasas_irqpoll(struct irq_poll *irqpoll, int budget) 3801{ 3802 struct megasas_irq_context *irq_ctx; 3803 struct megasas_instance *instance; 3804 int num_entries; 3805 3806 irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll); 3807 instance = irq_ctx->instance; 3808 3809 if (irq_ctx->irq_line_enable) { 3810 disable_irq_nosync(irq_ctx->os_irq); 3811 irq_ctx->irq_line_enable = false; 3812 } 3813 3814 num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3815 if (num_entries < budget) { 3816 irq_poll_complete(irqpoll); 3817 irq_ctx->irq_poll_scheduled = false; 3818 enable_irq(irq_ctx->os_irq); 3819 complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx); 3820 } 3821 3822 return num_entries; 3823} 3824 3825/** 3826 * megasas_complete_cmd_dpc_fusion - Completes command 3827 * @instance_addr: Adapter soft state address 3828 * 3829 * Tasklet to complete cmds 3830 */ 3831static void 3832megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) 3833{ 3834 struct megasas_instance *instance = 3835 (struct megasas_instance *)instance_addr; 3836 struct megasas_irq_context *irq_ctx = NULL; 3837 u32 count, MSIxIndex; 3838 3839 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3840 3841 /* If we have already declared adapter dead, donot complete cmds */ 3842 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3843 return; 3844 3845 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) { 3846 irq_ctx = &instance->irq_context[MSIxIndex]; 3847 complete_cmd_fusion(instance, MSIxIndex, irq_ctx); 3848 } 3849} 3850 3851/** 3852 * megasas_isr_fusion - isr entry point 3853 * @irq: IRQ number 3854 * @devp: IRQ context 3855 */ 3856static irqreturn_t megasas_isr_fusion(int irq, void *devp) 3857{ 3858 struct megasas_irq_context *irq_context = devp; 3859 struct megasas_instance *instance = irq_context->instance; 3860 u32 mfiStatus; 3861 3862 if (instance->mask_interrupts) 3863 return IRQ_NONE; 3864 3865 if (irq_context->irq_poll_scheduled) 3866 return IRQ_HANDLED; 3867 3868 if (!instance->msix_vectors) { 3869 mfiStatus = instance->instancet->clear_intr(instance); 3870 if (!mfiStatus) 3871 return IRQ_NONE; 3872 } 3873 3874 /* If we are resetting, bail */ 3875 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { 3876 instance->instancet->clear_intr(instance); 3877 return IRQ_HANDLED; 3878 } 3879 3880 return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context) 3881 ? IRQ_HANDLED : IRQ_NONE; 3882} 3883 3884/** 3885 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru 3886 * @instance: Adapter soft state 3887 * @mfi_cmd: megasas_cmd pointer 3888 * 3889 */ 3890static void 3891build_mpt_mfi_pass_thru(struct megasas_instance *instance, 3892 struct megasas_cmd *mfi_cmd) 3893{ 3894 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; 3895 struct MPI2_RAID_SCSI_IO_REQUEST *io_req; 3896 struct megasas_cmd_fusion *cmd; 3897 struct fusion_context *fusion; 3898 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; 3899 3900 fusion = instance->ctrl_context; 3901 3902 cmd = megasas_get_cmd_fusion(instance, 3903 instance->max_scsi_cmds + mfi_cmd->index); 3904 3905 /* Save the smid. To be used for returning the cmd */ 3906 mfi_cmd->context.smid = cmd->index; 3907 3908 /* 3909 * For cmds where the flag is set, store the flag and check 3910 * on completion. For cmds with this flag, don't call 3911 * megasas_complete_cmd 3912 */ 3913 3914 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) 3915 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; 3916 3917 io_req = cmd->io_request; 3918 3919 if (instance->adapter_type >= INVADER_SERIES) { 3920 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = 3921 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; 3922 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 3923 sgl_ptr_end->Flags = 0; 3924 } 3925 3926 mpi25_ieee_chain = 3927 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; 3928 3929 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; 3930 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, 3931 SGL) / 4; 3932 io_req->ChainOffset = fusion->chain_offset_mfi_pthru; 3933 3934 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); 3935 3936 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 3937 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; 3938 3939 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size); 3940} 3941 3942/** 3943 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd 3944 * @instance: Adapter soft state 3945 * @cmd: mfi cmd to build 3946 * 3947 */ 3948static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3949build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 3950{ 3951 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; 3952 u16 index; 3953 3954 build_mpt_mfi_pass_thru(instance, cmd); 3955 index = cmd->context.smid; 3956 3957 req_desc = megasas_get_request_descriptor(instance, index - 1); 3958 3959 req_desc->Words = 0; 3960 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3961 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3962 3963 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3964 3965 return req_desc; 3966} 3967 3968/** 3969 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd 3970 * @instance: Adapter soft state 3971 * @cmd: mfi cmd pointer 3972 * 3973 */ 3974static void 3975megasas_issue_dcmd_fusion(struct megasas_instance *instance, 3976 struct megasas_cmd *cmd) 3977{ 3978 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3979 3980 req_desc = build_mpt_cmd(instance, cmd); 3981 3982 megasas_fire_cmd_fusion(instance, req_desc); 3983 return; 3984} 3985 3986/** 3987 * megasas_release_fusion - Reverses the FW initialization 3988 * @instance: Adapter soft state 3989 */ 3990void 3991megasas_release_fusion(struct megasas_instance *instance) 3992{ 3993 megasas_free_ioc_init_cmd(instance); 3994 megasas_free_cmds(instance); 3995 megasas_free_cmds_fusion(instance); 3996 3997 iounmap(instance->reg_set); 3998 3999 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 4000} 4001 4002/** 4003 * megasas_read_fw_status_reg_fusion - returns the current FW status value 4004 * @instance: Adapter soft state 4005 */ 4006static u32 4007megasas_read_fw_status_reg_fusion(struct megasas_instance *instance) 4008{ 4009 return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0); 4010} 4011 4012/** 4013 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware 4014 * @instance: Controller's soft instance 4015 * @return: Number of allocated host crash buffers 4016 */ 4017static void 4018megasas_alloc_host_crash_buffer(struct megasas_instance *instance) 4019{ 4020 unsigned int i; 4021 4022 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { 4023 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); 4024 if (!instance->crash_buf[i]) { 4025 dev_info(&instance->pdev->dev, "Firmware crash dump " 4026 "memory allocation failed at index %d\n", i); 4027 break; 4028 } 4029 } 4030 instance->drv_buf_alloc = i; 4031} 4032 4033/** 4034 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware 4035 * @instance: Controller's soft instance 4036 */ 4037void 4038megasas_free_host_crash_buffer(struct megasas_instance *instance) 4039{ 4040 unsigned int i; 4041 for (i = 0; i < instance->drv_buf_alloc; i++) { 4042 vfree(instance->crash_buf[i]); 4043 } 4044 instance->drv_buf_index = 0; 4045 instance->drv_buf_alloc = 0; 4046 instance->fw_crash_state = UNAVAILABLE; 4047 instance->fw_crash_buffer_size = 0; 4048} 4049 4050/** 4051 * megasas_adp_reset_fusion - For controller reset 4052 * @instance: Controller's soft instance 4053 * @regs: MFI register set 4054 */ 4055static int 4056megasas_adp_reset_fusion(struct megasas_instance *instance, 4057 struct megasas_register_set __iomem *regs) 4058{ 4059 u32 host_diag, abs_state, retry; 4060 4061 /* Now try to reset the chip */ 4062 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4063 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4064 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4065 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4066 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4067 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4068 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 4069 4070 /* Check that the diag write enable (DRWE) bit is on */ 4071 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag); 4072 retry = 0; 4073 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { 4074 msleep(100); 4075 host_diag = megasas_readl(instance, 4076 &instance->reg_set->fusion_host_diag); 4077 if (retry++ == 100) { 4078 dev_warn(&instance->pdev->dev, 4079 "Host diag unlock failed from %s %d\n", 4080 __func__, __LINE__); 4081 break; 4082 } 4083 } 4084 if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) 4085 return -1; 4086 4087 /* Send chip reset command */ 4088 writel(host_diag | HOST_DIAG_RESET_ADAPTER, 4089 &instance->reg_set->fusion_host_diag); 4090 msleep(3000); 4091 4092 /* Make sure reset adapter bit is cleared */ 4093 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag); 4094 retry = 0; 4095 while (host_diag & HOST_DIAG_RESET_ADAPTER) { 4096 msleep(100); 4097 host_diag = megasas_readl(instance, 4098 &instance->reg_set->fusion_host_diag); 4099 if (retry++ == 1000) { 4100 dev_warn(&instance->pdev->dev, 4101 "Diag reset adapter never cleared %s %d\n", 4102 __func__, __LINE__); 4103 break; 4104 } 4105 } 4106 if (host_diag & HOST_DIAG_RESET_ADAPTER) 4107 return -1; 4108 4109 abs_state = instance->instancet->read_fw_status_reg(instance) 4110 & MFI_STATE_MASK; 4111 retry = 0; 4112 4113 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { 4114 msleep(100); 4115 abs_state = instance->instancet-> 4116 read_fw_status_reg(instance) & MFI_STATE_MASK; 4117 } 4118 if (abs_state <= MFI_STATE_FW_INIT) { 4119 dev_warn(&instance->pdev->dev, 4120 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", 4121 abs_state, __func__, __LINE__); 4122 return -1; 4123 } 4124 4125 return 0; 4126} 4127 4128/** 4129 * megasas_check_reset_fusion - For controller reset check 4130 * @instance: Controller's soft instance 4131 * @regs: MFI register set 4132 */ 4133static int 4134megasas_check_reset_fusion(struct megasas_instance *instance, 4135 struct megasas_register_set __iomem *regs) 4136{ 4137 return 0; 4138} 4139 4140/** 4141 * megasas_trigger_snap_dump - Trigger snap dump in FW 4142 * @instance: Soft instance of adapter 4143 */ 4144static inline void megasas_trigger_snap_dump(struct megasas_instance *instance) 4145{ 4146 int j; 4147 u32 fw_state, abs_state; 4148 4149 if (!instance->disableOnlineCtrlReset) { 4150 dev_info(&instance->pdev->dev, "Trigger snap dump\n"); 4151 writel(MFI_ADP_TRIGGER_SNAP_DUMP, 4152 &instance->reg_set->doorbell); 4153 readl(&instance->reg_set->doorbell); 4154 } 4155 4156 for (j = 0; j < instance->snapdump_wait_time; j++) { 4157 abs_state = instance->instancet->read_fw_status_reg(instance); 4158 fw_state = abs_state & MFI_STATE_MASK; 4159 if (fw_state == MFI_STATE_FAULT) { 4160 dev_printk(KERN_ERR, &instance->pdev->dev, 4161 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n", 4162 abs_state & MFI_STATE_FAULT_CODE, 4163 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4164 return; 4165 } 4166 msleep(1000); 4167 } 4168} 4169 4170/* This function waits for outstanding commands on fusion to complete */ 4171static int 4172megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, 4173 int reason, int *convert) 4174{ 4175 int i, outstanding, retval = 0, hb_seconds_missed = 0; 4176 u32 fw_state, abs_state; 4177 u32 waittime_for_io_completion; 4178 4179 waittime_for_io_completion = 4180 min_t(u32, resetwaittime, 4181 (resetwaittime - instance->snapdump_wait_time)); 4182 4183 if (reason == MFI_IO_TIMEOUT_OCR) { 4184 dev_info(&instance->pdev->dev, 4185 "MFI command is timed out\n"); 4186 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4187 if (instance->snapdump_wait_time) 4188 megasas_trigger_snap_dump(instance); 4189 retval = 1; 4190 goto out; 4191 } 4192 4193 for (i = 0; i < waittime_for_io_completion; i++) { 4194 /* Check if firmware is in fault state */ 4195 abs_state = instance->instancet->read_fw_status_reg(instance); 4196 fw_state = abs_state & MFI_STATE_MASK; 4197 if (fw_state == MFI_STATE_FAULT) { 4198 dev_printk(KERN_ERR, &instance->pdev->dev, 4199 "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n", 4200 abs_state & MFI_STATE_FAULT_CODE, 4201 abs_state & MFI_STATE_FAULT_SUBCODE, __func__); 4202 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4203 if (instance->requestorId && reason) { 4204 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" 4205 " state while polling during" 4206 " I/O timeout handling for %d\n", 4207 instance->host->host_no); 4208 *convert = 1; 4209 } 4210 4211 retval = 1; 4212 goto out; 4213 } 4214 4215 4216 /* If SR-IOV VF mode & heartbeat timeout, don't wait */ 4217 if (instance->requestorId && !reason) { 4218 retval = 1; 4219 goto out; 4220 } 4221 4222 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ 4223 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) { 4224 if (instance->hb_host_mem->HB.fwCounter != 4225 instance->hb_host_mem->HB.driverCounter) { 4226 instance->hb_host_mem->HB.driverCounter = 4227 instance->hb_host_mem->HB.fwCounter; 4228 hb_seconds_missed = 0; 4229 } else { 4230 hb_seconds_missed++; 4231 if (hb_seconds_missed == 4232 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { 4233 dev_warn(&instance->pdev->dev, "SR-IOV:" 4234 " Heartbeat never completed " 4235 " while polling during I/O " 4236 " timeout handling for " 4237 "scsi%d.\n", 4238 instance->host->host_no); 4239 *convert = 1; 4240 retval = 1; 4241 goto out; 4242 } 4243 } 4244 } 4245 4246 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 4247 outstanding = atomic_read(&instance->fw_outstanding); 4248 if (!outstanding) 4249 goto out; 4250 4251 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 4252 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 4253 "commands to complete for scsi%d\n", i, 4254 outstanding, instance->host->host_no); 4255 } 4256 msleep(1000); 4257 } 4258 4259 if (instance->snapdump_wait_time) { 4260 megasas_trigger_snap_dump(instance); 4261 retval = 1; 4262 goto out; 4263 } 4264 4265 if (atomic_read(&instance->fw_outstanding)) { 4266 dev_err(&instance->pdev->dev, "pending commands remain after waiting, " 4267 "will reset adapter scsi%d.\n", 4268 instance->host->host_no); 4269 *convert = 1; 4270 retval = 1; 4271 } 4272 4273out: 4274 if (!retval && reason == SCSIIO_TIMEOUT_OCR) 4275 dev_info(&instance->pdev->dev, "IO is completed, no OCR is required\n"); 4276 4277 return retval; 4278} 4279 4280void megasas_reset_reply_desc(struct megasas_instance *instance) 4281{ 4282 int i, j, count; 4283 struct fusion_context *fusion; 4284 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 4285 4286 fusion = instance->ctrl_context; 4287 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 4288 count += instance->iopoll_q_count; 4289 4290 for (i = 0 ; i < count ; i++) { 4291 fusion->last_reply_idx[i] = 0; 4292 reply_desc = fusion->reply_frames_desc[i]; 4293 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) 4294 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 4295 } 4296} 4297 4298/* 4299 * megasas_refire_mgmt_cmd : Re-fire management commands 4300 * @instance: Controller's soft instance 4301*/ 4302static void megasas_refire_mgmt_cmd(struct megasas_instance *instance, 4303 bool return_ioctl) 4304{ 4305 int j; 4306 struct megasas_cmd_fusion *cmd_fusion; 4307 struct fusion_context *fusion; 4308 struct megasas_cmd *cmd_mfi; 4309 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4310 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 4311 u16 smid; 4312 bool refire_cmd = false; 4313 u8 result; 4314 u32 opcode = 0; 4315 4316 fusion = instance->ctrl_context; 4317 4318 /* Re-fire management commands. 4319 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. 4320 */ 4321 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { 4322 cmd_fusion = fusion->cmd_list[j]; 4323 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 4324 smid = le16_to_cpu(cmd_mfi->context.smid); 4325 result = REFIRE_CMD; 4326 4327 if (!smid) 4328 continue; 4329 4330 req_desc = megasas_get_request_descriptor(instance, smid - 1); 4331 4332 switch (cmd_mfi->frame->hdr.cmd) { 4333 case MFI_CMD_DCMD: 4334 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode); 4335 /* Do not refire shutdown command */ 4336 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 4337 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; 4338 result = COMPLETE_CMD; 4339 break; 4340 } 4341 4342 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) && 4343 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 4344 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); 4345 4346 if (!refire_cmd) 4347 result = RETURN_CMD; 4348 4349 break; 4350 case MFI_CMD_NVME: 4351 if (!instance->support_nvme_passthru) { 4352 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 4353 result = COMPLETE_CMD; 4354 } 4355 4356 break; 4357 case MFI_CMD_TOOLBOX: 4358 if (!instance->support_pci_lane_margining) { 4359 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 4360 result = COMPLETE_CMD; 4361 } 4362 4363 break; 4364 default: 4365 break; 4366 } 4367 4368 if (return_ioctl && cmd_mfi->sync_cmd && 4369 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) { 4370 dev_err(&instance->pdev->dev, 4371 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x\n", 4372 __func__, __LINE__, cmd_mfi->frame->hdr.cmd, 4373 le32_to_cpu(cmd_mfi->frame->dcmd.opcode)); 4374 cmd_mfi->cmd_status_drv = DCMD_BUSY; 4375 result = COMPLETE_CMD; 4376 } 4377 4378 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 4379 cmd_fusion->io_request; 4380 if (scsi_io_req->Function == MPI2_FUNCTION_SCSI_TASK_MGMT) 4381 result = RETURN_CMD; 4382 4383 switch (result) { 4384 case REFIRE_CMD: 4385 megasas_fire_cmd_fusion(instance, req_desc); 4386 break; 4387 case RETURN_CMD: 4388 megasas_return_cmd(instance, cmd_mfi); 4389 break; 4390 case COMPLETE_CMD: 4391 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 4392 break; 4393 } 4394 } 4395} 4396 4397/* 4398 * megasas_return_polled_cmds: Return polled mode commands back to the pool 4399 * before initiating an OCR. 4400 * @instance: Controller's soft instance 4401 */ 4402static void 4403megasas_return_polled_cmds(struct megasas_instance *instance) 4404{ 4405 int i; 4406 struct megasas_cmd_fusion *cmd_fusion; 4407 struct fusion_context *fusion; 4408 struct megasas_cmd *cmd_mfi; 4409 4410 fusion = instance->ctrl_context; 4411 4412 for (i = instance->max_scsi_cmds; i < instance->max_fw_cmds; i++) { 4413 cmd_fusion = fusion->cmd_list[i]; 4414 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 4415 4416 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 4417 if (megasas_dbg_lvl & OCR_DEBUG) 4418 dev_info(&instance->pdev->dev, 4419 "%s %d return cmd 0x%x opcode 0x%x\n", 4420 __func__, __LINE__, cmd_mfi->frame->hdr.cmd, 4421 le32_to_cpu(cmd_mfi->frame->dcmd.opcode)); 4422 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 4423 megasas_return_cmd(instance, cmd_mfi); 4424 } 4425 } 4426} 4427 4428/* 4429 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device 4430 * @instance: per adapter struct 4431 * @channel: the channel assigned by the OS 4432 * @id: the id assigned by the OS 4433 * 4434 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED 4435 */ 4436 4437static int megasas_track_scsiio(struct megasas_instance *instance, 4438 int id, int channel) 4439{ 4440 int i, found = 0; 4441 struct megasas_cmd_fusion *cmd_fusion; 4442 struct fusion_context *fusion; 4443 fusion = instance->ctrl_context; 4444 4445 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4446 cmd_fusion = fusion->cmd_list[i]; 4447 if (cmd_fusion->scmd && 4448 (cmd_fusion->scmd->device->id == id && 4449 cmd_fusion->scmd->device->channel == channel)) { 4450 dev_info(&instance->pdev->dev, 4451 "SCSI commands pending to target" 4452 "channel %d id %d \tSMID: 0x%x\n", 4453 channel, id, cmd_fusion->index); 4454 scsi_print_command(cmd_fusion->scmd); 4455 found = 1; 4456 break; 4457 } 4458 } 4459 4460 return found ? FAILED : SUCCESS; 4461} 4462 4463/** 4464 * megasas_tm_response_code - translation of device response code 4465 * @instance: Controller's soft instance 4466 * @mpi_reply: MPI reply returned by firmware 4467 * 4468 * Return nothing. 4469 */ 4470static void 4471megasas_tm_response_code(struct megasas_instance *instance, 4472 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) 4473{ 4474 char *desc; 4475 4476 switch (mpi_reply->ResponseCode) { 4477 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: 4478 desc = "task management request completed"; 4479 break; 4480 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: 4481 desc = "invalid frame"; 4482 break; 4483 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: 4484 desc = "task management request not supported"; 4485 break; 4486 case MPI2_SCSITASKMGMT_RSP_TM_FAILED: 4487 desc = "task management request failed"; 4488 break; 4489 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: 4490 desc = "task management request succeeded"; 4491 break; 4492 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: 4493 desc = "invalid lun"; 4494 break; 4495 case 0xA: 4496 desc = "overlapped tag attempted"; 4497 break; 4498 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: 4499 desc = "task queued, however not sent to target"; 4500 break; 4501 default: 4502 desc = "unknown"; 4503 break; 4504 } 4505 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", 4506 mpi_reply->ResponseCode, desc); 4507 dev_dbg(&instance->pdev->dev, 4508 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" 4509 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", 4510 mpi_reply->TerminationCount, mpi_reply->DevHandle, 4511 mpi_reply->Function, mpi_reply->TaskType, 4512 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); 4513} 4514 4515/** 4516 * megasas_issue_tm - main routine for sending tm requests 4517 * @instance: per adapter struct 4518 * @device_handle: device handle 4519 * @channel: the channel assigned by the OS 4520 * @id: the id assigned by the OS 4521 * @smid_task: smid assigned to the task 4522 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) 4523 * @mr_device_priv_data: private data 4524 * Context: user 4525 * 4526 * MegaRaid use MPT interface for Task Magement request. 4527 * A generic API for sending task management requests to firmware. 4528 * 4529 * Return SUCCESS or FAILED. 4530 */ 4531static int 4532megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, 4533 uint channel, uint id, u16 smid_task, u8 type, 4534 struct MR_PRIV_DEVICE *mr_device_priv_data) 4535{ 4536 struct MR_TASK_MANAGE_REQUEST *mr_request; 4537 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; 4538 unsigned long timeleft; 4539 struct megasas_cmd_fusion *cmd_fusion; 4540 struct megasas_cmd *cmd_mfi; 4541 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4542 struct fusion_context *fusion = NULL; 4543 struct megasas_cmd_fusion *scsi_lookup; 4544 int rc; 4545 int timeout = MEGASAS_DEFAULT_TM_TIMEOUT; 4546 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; 4547 4548 fusion = instance->ctrl_context; 4549 4550 cmd_mfi = megasas_get_cmd(instance); 4551 4552 if (!cmd_mfi) { 4553 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4554 __func__, __LINE__); 4555 return -ENOMEM; 4556 } 4557 4558 cmd_fusion = megasas_get_cmd_fusion(instance, 4559 instance->max_scsi_cmds + cmd_mfi->index); 4560 4561 /* Save the smid. To be used for returning the cmd */ 4562 cmd_mfi->context.smid = cmd_fusion->index; 4563 4564 req_desc = megasas_get_request_descriptor(instance, 4565 (cmd_fusion->index - 1)); 4566 4567 cmd_fusion->request_desc = req_desc; 4568 req_desc->Words = 0; 4569 4570 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; 4571 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); 4572 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; 4573 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 4574 mpi_request->DevHandle = cpu_to_le16(device_handle); 4575 mpi_request->TaskType = type; 4576 mpi_request->TaskMID = cpu_to_le16(smid_task); 4577 mpi_request->LUN[1] = 0; 4578 4579 4580 req_desc = cmd_fusion->request_desc; 4581 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); 4582 req_desc->HighPriority.RequestFlags = 4583 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << 4584 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 4585 req_desc->HighPriority.MSIxIndex = 0; 4586 req_desc->HighPriority.LMID = 0; 4587 req_desc->HighPriority.Reserved1 = 0; 4588 4589 if (channel < MEGASAS_MAX_PD_CHANNELS) 4590 mr_request->tmReqFlags.isTMForPD = 1; 4591 else 4592 mr_request->tmReqFlags.isTMForLD = 1; 4593 4594 init_completion(&cmd_fusion->done); 4595 megasas_fire_cmd_fusion(instance, req_desc); 4596 4597 switch (type) { 4598 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4599 timeout = mr_device_priv_data->task_abort_tmo; 4600 break; 4601 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4602 timeout = mr_device_priv_data->target_reset_tmo; 4603 break; 4604 } 4605 4606 timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ); 4607 4608 if (!timeleft) { 4609 dev_err(&instance->pdev->dev, 4610 "task mgmt type 0x%x timed out\n", type); 4611 mutex_unlock(&instance->reset_mutex); 4612 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); 4613 mutex_lock(&instance->reset_mutex); 4614 return rc; 4615 } 4616 4617 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; 4618 megasas_tm_response_code(instance, mpi_reply); 4619 4620 megasas_return_cmd(instance, cmd_mfi); 4621 rc = SUCCESS; 4622 switch (type) { 4623 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4624 scsi_lookup = fusion->cmd_list[smid_task - 1]; 4625 4626 if (scsi_lookup->scmd == NULL) 4627 break; 4628 else { 4629 instance->instancet->disable_intr(instance); 4630 megasas_sync_irqs((unsigned long)instance); 4631 instance->instancet->enable_intr(instance); 4632 megasas_enable_irq_poll(instance); 4633 if (scsi_lookup->scmd == NULL) 4634 break; 4635 } 4636 rc = FAILED; 4637 break; 4638 4639 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4640 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) 4641 break; 4642 instance->instancet->disable_intr(instance); 4643 megasas_sync_irqs((unsigned long)instance); 4644 rc = megasas_track_scsiio(instance, id, channel); 4645 instance->instancet->enable_intr(instance); 4646 megasas_enable_irq_poll(instance); 4647 4648 break; 4649 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: 4650 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: 4651 break; 4652 default: 4653 rc = FAILED; 4654 break; 4655 } 4656 4657 return rc; 4658 4659} 4660 4661/* 4662 * megasas_fusion_smid_lookup : Look for fusion command corresponding to SCSI 4663 * @instance: per adapter struct 4664 * 4665 * Return Non Zero index, if SMID found in outstanding commands 4666 */ 4667static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) 4668{ 4669 int i, ret = 0; 4670 struct megasas_instance *instance; 4671 struct megasas_cmd_fusion *cmd_fusion; 4672 struct fusion_context *fusion; 4673 4674 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4675 4676 fusion = instance->ctrl_context; 4677 4678 for (i = 0; i < instance->max_scsi_cmds; i++) { 4679 cmd_fusion = fusion->cmd_list[i]; 4680 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { 4681 scmd_printk(KERN_NOTICE, scmd, "Abort request is for" 4682 " SMID: %d\n", cmd_fusion->index); 4683 ret = cmd_fusion->index; 4684 break; 4685 } 4686 } 4687 4688 return ret; 4689} 4690 4691/* 4692* megasas_get_tm_devhandle - Get devhandle for TM request 4693* @sdev- OS provided scsi device 4694* 4695* Returns- devhandle/targetID of SCSI device 4696*/ 4697static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) 4698{ 4699 u16 pd_index = 0; 4700 u32 device_id; 4701 struct megasas_instance *instance; 4702 struct fusion_context *fusion; 4703 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 4704 u16 devhandle = (u16)ULONG_MAX; 4705 4706 instance = (struct megasas_instance *)sdev->host->hostdata; 4707 fusion = instance->ctrl_context; 4708 4709 if (!MEGASAS_IS_LOGICAL(sdev)) { 4710 if (instance->use_seqnum_jbod_fp) { 4711 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) 4712 + sdev->id; 4713 pd_sync = (void *)fusion->pd_seq_sync 4714 [(instance->pd_seq_map_id - 1) & 1]; 4715 devhandle = pd_sync->seq[pd_index].devHandle; 4716 } else 4717 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" 4718 " without JBOD MAP support from %s %d\n", __func__, __LINE__); 4719 } else { 4720 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 4721 + sdev->id; 4722 devhandle = device_id; 4723 } 4724 4725 return devhandle; 4726} 4727 4728/* 4729 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters 4730 * @scmd : pointer to scsi command object 4731 * 4732 * Return SUCCESS, if command aborted else FAILED 4733 */ 4734 4735int megasas_task_abort_fusion(struct scsi_cmnd *scmd) 4736{ 4737 struct megasas_instance *instance; 4738 u16 smid, devhandle; 4739 int ret; 4740 struct MR_PRIV_DEVICE *mr_device_priv_data; 4741 mr_device_priv_data = scmd->device->hostdata; 4742 4743 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4744 4745 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4746 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4747 "SCSI host:%d\n", instance->host->host_no); 4748 ret = FAILED; 4749 return ret; 4750 } 4751 4752 if (!mr_device_priv_data) { 4753 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4754 "scmd(%p)\n", scmd); 4755 scmd->result = DID_NO_CONNECT << 16; 4756 ret = SUCCESS; 4757 goto out; 4758 } 4759 4760 if (!mr_device_priv_data->is_tm_capable) { 4761 ret = FAILED; 4762 goto out; 4763 } 4764 4765 mutex_lock(&instance->reset_mutex); 4766 4767 smid = megasas_fusion_smid_lookup(scmd); 4768 4769 if (!smid) { 4770 ret = SUCCESS; 4771 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" 4772 " issued is not found in outstanding commands\n"); 4773 mutex_unlock(&instance->reset_mutex); 4774 goto out; 4775 } 4776 4777 devhandle = megasas_get_tm_devhandle(scmd->device); 4778 4779 if (devhandle == (u16)ULONG_MAX) { 4780 ret = FAILED; 4781 sdev_printk(KERN_INFO, scmd->device, 4782 "task abort issued for invalid devhandle\n"); 4783 mutex_unlock(&instance->reset_mutex); 4784 goto out; 4785 } 4786 sdev_printk(KERN_INFO, scmd->device, 4787 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n", 4788 scmd, devhandle); 4789 4790 mr_device_priv_data->tm_busy = true; 4791 ret = megasas_issue_tm(instance, devhandle, 4792 scmd->device->channel, scmd->device->id, smid, 4793 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, 4794 mr_device_priv_data); 4795 mr_device_priv_data->tm_busy = false; 4796 4797 mutex_unlock(&instance->reset_mutex); 4798 scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n", 4799 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 4800out: 4801 scsi_print_command(scmd); 4802 if (megasas_dbg_lvl & TM_DEBUG) 4803 megasas_dump_fusion_io(scmd); 4804 4805 return ret; 4806} 4807 4808/* 4809 * megasas_reset_target_fusion : target reset function for fusion adapters 4810 * scmd: SCSI command pointer 4811 * 4812 * Returns SUCCESS if all commands associated with target aborted else FAILED 4813 */ 4814 4815int megasas_reset_target_fusion(struct scsi_cmnd *scmd) 4816{ 4817 4818 struct megasas_instance *instance; 4819 int ret = FAILED; 4820 u16 devhandle; 4821 struct MR_PRIV_DEVICE *mr_device_priv_data; 4822 mr_device_priv_data = scmd->device->hostdata; 4823 4824 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4825 4826 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4827 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4828 "SCSI host:%d\n", instance->host->host_no); 4829 ret = FAILED; 4830 return ret; 4831 } 4832 4833 if (!mr_device_priv_data) { 4834 sdev_printk(KERN_INFO, scmd->device, 4835 "device been deleted! scmd: (0x%p)\n", scmd); 4836 scmd->result = DID_NO_CONNECT << 16; 4837 ret = SUCCESS; 4838 goto out; 4839 } 4840 4841 if (!mr_device_priv_data->is_tm_capable) { 4842 ret = FAILED; 4843 goto out; 4844 } 4845 4846 mutex_lock(&instance->reset_mutex); 4847 devhandle = megasas_get_tm_devhandle(scmd->device); 4848 4849 if (devhandle == (u16)ULONG_MAX) { 4850 ret = FAILED; 4851 sdev_printk(KERN_INFO, scmd->device, 4852 "target reset issued for invalid devhandle\n"); 4853 mutex_unlock(&instance->reset_mutex); 4854 goto out; 4855 } 4856 4857 sdev_printk(KERN_INFO, scmd->device, 4858 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n", 4859 scmd, devhandle); 4860 mr_device_priv_data->tm_busy = true; 4861 ret = megasas_issue_tm(instance, devhandle, 4862 scmd->device->channel, scmd->device->id, 0, 4863 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 4864 mr_device_priv_data); 4865 mr_device_priv_data->tm_busy = false; 4866 mutex_unlock(&instance->reset_mutex); 4867 scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n", 4868 (ret == SUCCESS) ? "SUCCESS" : "FAILED"); 4869 4870out: 4871 return ret; 4872} 4873 4874/*SRIOV get other instance in cluster if any*/ 4875static struct 4876megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) 4877{ 4878 int i; 4879 4880 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { 4881 if (megasas_mgmt_info.instance[i] && 4882 (megasas_mgmt_info.instance[i] != instance) && 4883 megasas_mgmt_info.instance[i]->requestorId && 4884 megasas_mgmt_info.instance[i]->peerIsPresent && 4885 (memcmp((megasas_mgmt_info.instance[i]->clusterId), 4886 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) 4887 return megasas_mgmt_info.instance[i]; 4888 } 4889 return NULL; 4890} 4891 4892/* Check for a second path that is currently UP */ 4893int megasas_check_mpio_paths(struct megasas_instance *instance, 4894 struct scsi_cmnd *scmd) 4895{ 4896 struct megasas_instance *peer_instance = NULL; 4897 int retval = (DID_REQUEUE << 16); 4898 4899 if (instance->peerIsPresent) { 4900 peer_instance = megasas_get_peer_instance(instance); 4901 if ((peer_instance) && 4902 (atomic_read(&peer_instance->adprecovery) == 4903 MEGASAS_HBA_OPERATIONAL)) 4904 retval = (DID_NO_CONNECT << 16); 4905 } 4906 return retval; 4907} 4908 4909/* Core fusion reset function */ 4910int megasas_reset_fusion(struct Scsi_Host *shost, int reason) 4911{ 4912 int retval = SUCCESS, i, j, convert = 0; 4913 struct megasas_instance *instance; 4914 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; 4915 struct fusion_context *fusion; 4916 u32 abs_state, status_reg, reset_adapter, fpio_count = 0; 4917 u32 io_timeout_in_crash_mode = 0; 4918 struct scsi_cmnd *scmd_local = NULL; 4919 struct scsi_device *sdev; 4920 int ret_target_prop = DCMD_FAILED; 4921 bool is_target_prop = false; 4922 bool do_adp_reset = true; 4923 int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES; 4924 4925 instance = (struct megasas_instance *)shost->hostdata; 4926 fusion = instance->ctrl_context; 4927 4928 mutex_lock(&instance->reset_mutex); 4929 4930 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 4931 dev_warn(&instance->pdev->dev, "Hardware critical error, " 4932 "returning FAILED for scsi%d.\n", 4933 instance->host->host_no); 4934 mutex_unlock(&instance->reset_mutex); 4935 return FAILED; 4936 } 4937 status_reg = instance->instancet->read_fw_status_reg(instance); 4938 abs_state = status_reg & MFI_STATE_MASK; 4939 4940 /* IO timeout detected, forcibly put FW in FAULT state */ 4941 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && 4942 instance->crash_dump_app_support && reason) { 4943 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " 4944 "forcibly FAULT Firmware\n"); 4945 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4946 status_reg = megasas_readl(instance, &instance->reg_set->doorbell); 4947 writel(status_reg | MFI_STATE_FORCE_OCR, 4948 &instance->reg_set->doorbell); 4949 readl(&instance->reg_set->doorbell); 4950 mutex_unlock(&instance->reset_mutex); 4951 do { 4952 ssleep(3); 4953 io_timeout_in_crash_mode++; 4954 dev_dbg(&instance->pdev->dev, "waiting for [%d] " 4955 "seconds for crash dump collection and OCR " 4956 "to be done\n", (io_timeout_in_crash_mode * 3)); 4957 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 4958 (io_timeout_in_crash_mode < 80)); 4959 4960 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 4961 dev_info(&instance->pdev->dev, "OCR done for IO " 4962 "timeout case\n"); 4963 retval = SUCCESS; 4964 } else { 4965 dev_info(&instance->pdev->dev, "Controller is not " 4966 "operational after 240 seconds wait for IO " 4967 "timeout case in FW crash dump mode\n do " 4968 "OCR/kill adapter\n"); 4969 retval = megasas_reset_fusion(shost, 0); 4970 } 4971 return retval; 4972 } 4973 4974 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 4975 timer_delete_sync(&instance->sriov_heartbeat_timer); 4976 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4977 set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags); 4978 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); 4979 instance->instancet->disable_intr(instance); 4980 megasas_sync_irqs((unsigned long)instance); 4981 4982 /* First try waiting for commands to complete */ 4983 if (megasas_wait_for_outstanding_fusion(instance, reason, 4984 &convert)) { 4985 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4986 dev_warn(&instance->pdev->dev, "resetting fusion " 4987 "adapter scsi%d.\n", instance->host->host_no); 4988 if (convert) 4989 reason = 0; 4990 4991 if (megasas_dbg_lvl & OCR_DEBUG) 4992 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); 4993 4994 /* Now return commands back to the OS */ 4995 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4996 cmd_fusion = fusion->cmd_list[i]; 4997 /*check for extra commands issued by driver*/ 4998 if (instance->adapter_type >= VENTURA_SERIES) { 4999 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; 5000 megasas_return_cmd_fusion(instance, r1_cmd); 5001 } 5002 scmd_local = cmd_fusion->scmd; 5003 if (cmd_fusion->scmd) { 5004 if (megasas_dbg_lvl & OCR_DEBUG) { 5005 sdev_printk(KERN_INFO, 5006 cmd_fusion->scmd->device, "SMID: 0x%x\n", 5007 cmd_fusion->index); 5008 megasas_dump_fusion_io(cmd_fusion->scmd); 5009 } 5010 5011 if (cmd_fusion->io_request->Function == 5012 MPI2_FUNCTION_SCSI_IO_REQUEST) 5013 fpio_count++; 5014 5015 scmd_local->result = 5016 megasas_check_mpio_paths(instance, 5017 scmd_local); 5018 if (instance->ldio_threshold && 5019 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 5020 atomic_dec(&instance->ldio_outstanding); 5021 megasas_return_cmd_fusion(instance, cmd_fusion); 5022 scsi_dma_unmap(scmd_local); 5023 scsi_done(scmd_local); 5024 } 5025 } 5026 5027 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n", 5028 fpio_count); 5029 5030 atomic_set(&instance->fw_outstanding, 0); 5031 5032 status_reg = instance->instancet->read_fw_status_reg(instance); 5033 abs_state = status_reg & MFI_STATE_MASK; 5034 reset_adapter = status_reg & MFI_RESET_ADAPTER; 5035 if (instance->disableOnlineCtrlReset || 5036 (abs_state == MFI_STATE_FAULT && !reset_adapter)) { 5037 /* Reset not supported, kill adapter */ 5038 dev_warn(&instance->pdev->dev, "Reset not supported" 5039 ", killing adapter scsi%d.\n", 5040 instance->host->host_no); 5041 goto kill_hba; 5042 } 5043 5044 /* Let SR-IOV VF & PF sync up if there was a HB failure */ 5045 if (instance->requestorId && !reason) { 5046 msleep(MEGASAS_OCR_SETTLE_TIME_VF); 5047 do_adp_reset = false; 5048 max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF; 5049 } 5050 5051 /* Now try to reset the chip */ 5052 for (i = 0; i < max_reset_tries; i++) { 5053 /* 5054 * Do adp reset and wait for 5055 * controller to transition to ready 5056 */ 5057 if (megasas_adp_reset_wait_for_ready(instance, 5058 do_adp_reset, 1) == FAILED) 5059 continue; 5060 5061 /* Wait for FW to become ready */ 5062 if (megasas_transition_to_ready(instance, 1)) { 5063 dev_warn(&instance->pdev->dev, 5064 "Failed to transition controller to ready for " 5065 "scsi%d.\n", instance->host->host_no); 5066 continue; 5067 } 5068 megasas_reset_reply_desc(instance); 5069 megasas_fusion_update_can_queue(instance, OCR_CONTEXT); 5070 5071 if (megasas_ioc_init_fusion(instance)) { 5072 continue; 5073 } 5074 5075 if (megasas_get_ctrl_info(instance)) { 5076 dev_info(&instance->pdev->dev, 5077 "Failed from %s %d\n", 5078 __func__, __LINE__); 5079 goto kill_hba; 5080 } 5081 5082 megasas_refire_mgmt_cmd(instance, 5083 (i == (MEGASAS_FUSION_MAX_RESET_TRIES - 1) 5084 ? 1 : 0)); 5085 5086 /* Reset load balance info */ 5087 if (fusion->load_balance_info) 5088 memset(fusion->load_balance_info, 0, 5089 (sizeof(struct LD_LOAD_BALANCE_INFO) * 5090 MAX_LOGICAL_DRIVES_EXT)); 5091 5092 if (!megasas_get_map_info(instance)) { 5093 megasas_sync_map_info(instance); 5094 } else { 5095 /* 5096 * Return pending polled mode cmds before 5097 * retrying OCR 5098 */ 5099 megasas_return_polled_cmds(instance); 5100 continue; 5101 } 5102 5103 megasas_setup_jbod_map(instance); 5104 5105 /* reset stream detection array */ 5106 if (instance->adapter_type >= VENTURA_SERIES) { 5107 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { 5108 memset(fusion->stream_detect_by_ld[j], 5109 0, sizeof(struct LD_STREAM_DETECT)); 5110 fusion->stream_detect_by_ld[j]->mru_bit_map 5111 = MR_STREAM_BITMAP; 5112 } 5113 } 5114 5115 clear_bit(MEGASAS_FUSION_IN_RESET, 5116 &instance->reset_flags); 5117 instance->instancet->enable_intr(instance); 5118 megasas_enable_irq_poll(instance); 5119 shost_for_each_device(sdev, shost) { 5120 if ((instance->tgt_prop) && 5121 (instance->nvme_page_size)) 5122 ret_target_prop = megasas_get_target_prop(instance, sdev); 5123 5124 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 5125 megasas_set_dynamic_target_properties(sdev, NULL, 5126 is_target_prop); 5127 } 5128 5129 status_reg = instance->instancet->read_fw_status_reg 5130 (instance); 5131 abs_state = status_reg & MFI_STATE_MASK; 5132 if (abs_state != MFI_STATE_OPERATIONAL) { 5133 dev_info(&instance->pdev->dev, 5134 "Adapter is not OPERATIONAL, state 0x%x for scsi:%d\n", 5135 abs_state, instance->host->host_no); 5136 goto out; 5137 } 5138 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 5139 5140 dev_info(&instance->pdev->dev, 5141 "Adapter is OPERATIONAL for scsi:%d\n", 5142 instance->host->host_no); 5143 5144 /* Restart SR-IOV heartbeat */ 5145 if (instance->requestorId) { 5146 if (!megasas_sriov_start_heartbeat(instance, 0)) 5147 megasas_start_timer(instance); 5148 else 5149 instance->skip_heartbeat_timer_del = 1; 5150 } 5151 5152 if (instance->crash_dump_drv_support && 5153 instance->crash_dump_app_support) 5154 megasas_set_crash_dump_params(instance, 5155 MR_CRASH_BUF_TURN_ON); 5156 else 5157 megasas_set_crash_dump_params(instance, 5158 MR_CRASH_BUF_TURN_OFF); 5159 5160 if (instance->snapdump_wait_time) { 5161 megasas_get_snapdump_properties(instance); 5162 dev_info(&instance->pdev->dev, 5163 "Snap dump wait time\t: %d\n", 5164 instance->snapdump_wait_time); 5165 } 5166 5167 retval = SUCCESS; 5168 5169 /* Adapter reset completed successfully */ 5170 dev_warn(&instance->pdev->dev, 5171 "Reset successful for scsi%d.\n", 5172 instance->host->host_no); 5173 5174 goto out; 5175 } 5176 /* Reset failed, kill the adapter */ 5177 dev_warn(&instance->pdev->dev, "Reset failed, killing " 5178 "adapter scsi%d.\n", instance->host->host_no); 5179 goto kill_hba; 5180 } else { 5181 /* For VF: Restart HB timer if we didn't OCR */ 5182 if (instance->requestorId) { 5183 megasas_start_timer(instance); 5184 } 5185 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 5186 instance->instancet->enable_intr(instance); 5187 megasas_enable_irq_poll(instance); 5188 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 5189 goto out; 5190 } 5191kill_hba: 5192 megaraid_sas_kill_hba(instance); 5193 megasas_enable_irq_poll(instance); 5194 instance->skip_heartbeat_timer_del = 1; 5195 retval = FAILED; 5196out: 5197 clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags); 5198 mutex_unlock(&instance->reset_mutex); 5199 return retval; 5200} 5201 5202/* Fusion Crash dump collection */ 5203static void megasas_fusion_crash_dump(struct megasas_instance *instance) 5204{ 5205 u32 status_reg; 5206 u8 partial_copy = 0; 5207 int wait = 0; 5208 5209 5210 status_reg = instance->instancet->read_fw_status_reg(instance); 5211 5212 /* 5213 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer 5214 * to host crash buffers 5215 */ 5216 if (instance->drv_buf_index == 0) { 5217 /* Buffer is already allocated for old Crash dump. 5218 * Do OCR and do not wait for crash dump collection 5219 */ 5220 if (instance->drv_buf_alloc) { 5221 dev_info(&instance->pdev->dev, "earlier crash dump is " 5222 "not yet copied by application, ignoring this " 5223 "crash dump and initiating OCR\n"); 5224 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 5225 writel(status_reg, 5226 &instance->reg_set->outbound_scratch_pad_0); 5227 readl(&instance->reg_set->outbound_scratch_pad_0); 5228 return; 5229 } 5230 megasas_alloc_host_crash_buffer(instance); 5231 dev_info(&instance->pdev->dev, "Number of host crash buffers " 5232 "allocated: %d\n", instance->drv_buf_alloc); 5233 } 5234 5235 while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) && 5236 (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) { 5237 if (!(status_reg & MFI_STATE_DMADONE)) { 5238 /* 5239 * Next crash dump buffer is not yet DMA'd by FW 5240 * Check after 10ms. Wait for 1 second for FW to 5241 * post the next buffer. If not bail out. 5242 */ 5243 wait++; 5244 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS); 5245 status_reg = instance->instancet->read_fw_status_reg( 5246 instance); 5247 continue; 5248 } 5249 5250 wait = 0; 5251 if (instance->drv_buf_index >= instance->drv_buf_alloc) { 5252 dev_info(&instance->pdev->dev, 5253 "Driver is done copying the buffer: %d\n", 5254 instance->drv_buf_alloc); 5255 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 5256 partial_copy = 1; 5257 break; 5258 } else { 5259 memcpy(instance->crash_buf[instance->drv_buf_index], 5260 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); 5261 instance->drv_buf_index++; 5262 status_reg &= ~MFI_STATE_DMADONE; 5263 } 5264 5265 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0); 5266 readl(&instance->reg_set->outbound_scratch_pad_0); 5267 5268 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS); 5269 status_reg = instance->instancet->read_fw_status_reg(instance); 5270 } 5271 5272 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { 5273 dev_info(&instance->pdev->dev, "Crash Dump is available,number " 5274 "of copied buffers: %d\n", instance->drv_buf_index); 5275 instance->fw_crash_buffer_size = instance->drv_buf_index; 5276 instance->fw_crash_state = AVAILABLE; 5277 instance->drv_buf_index = 0; 5278 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0); 5279 readl(&instance->reg_set->outbound_scratch_pad_0); 5280 if (!partial_copy) 5281 megasas_reset_fusion(instance->host, 0); 5282 } 5283} 5284 5285 5286/* Fusion OCR work queue */ 5287void megasas_fusion_ocr_wq(struct work_struct *work) 5288{ 5289 struct megasas_instance *instance = 5290 container_of(work, struct megasas_instance, work_init); 5291 5292 megasas_reset_fusion(instance->host, 0); 5293} 5294 5295/* Allocate fusion context */ 5296int 5297megasas_alloc_fusion_context(struct megasas_instance *instance) 5298{ 5299 struct fusion_context *fusion; 5300 5301 instance->ctrl_context = kzalloc(sizeof(struct fusion_context), 5302 GFP_KERNEL); 5303 if (!instance->ctrl_context) { 5304 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 5305 __func__, __LINE__); 5306 return -ENOMEM; 5307 } 5308 5309 fusion = instance->ctrl_context; 5310 5311 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 5312 sizeof(LD_SPAN_INFO)); 5313 fusion->log_to_span = 5314 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 5315 fusion->log_to_span_pages); 5316 if (!fusion->log_to_span) { 5317 fusion->log_to_span = 5318 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 5319 sizeof(LD_SPAN_INFO))); 5320 if (!fusion->log_to_span) { 5321 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 5322 __func__, __LINE__); 5323 return -ENOMEM; 5324 } 5325 } 5326 5327 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 5328 sizeof(struct LD_LOAD_BALANCE_INFO)); 5329 fusion->load_balance_info = 5330 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 5331 fusion->load_balance_info_pages); 5332 if (!fusion->load_balance_info) { 5333 fusion->load_balance_info = 5334 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 5335 sizeof(struct LD_LOAD_BALANCE_INFO))); 5336 if (!fusion->load_balance_info) 5337 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " 5338 "continuing without Load Balance support\n"); 5339 } 5340 5341 return 0; 5342} 5343 5344void 5345megasas_free_fusion_context(struct megasas_instance *instance) 5346{ 5347 struct fusion_context *fusion = instance->ctrl_context; 5348 5349 if (fusion) { 5350 if (fusion->load_balance_info) { 5351 if (is_vmalloc_addr(fusion->load_balance_info)) 5352 vfree(fusion->load_balance_info); 5353 else 5354 free_pages((ulong)fusion->load_balance_info, 5355 fusion->load_balance_info_pages); 5356 } 5357 5358 if (fusion->log_to_span) { 5359 if (is_vmalloc_addr(fusion->log_to_span)) 5360 vfree(fusion->log_to_span); 5361 else 5362 free_pages((ulong)fusion->log_to_span, 5363 fusion->log_to_span_pages); 5364 } 5365 5366 kfree(fusion); 5367 } 5368} 5369 5370struct megasas_instance_template megasas_instance_template_fusion = { 5371 .enable_intr = megasas_enable_intr_fusion, 5372 .disable_intr = megasas_disable_intr_fusion, 5373 .clear_intr = megasas_clear_intr_fusion, 5374 .read_fw_status_reg = megasas_read_fw_status_reg_fusion, 5375 .adp_reset = megasas_adp_reset_fusion, 5376 .check_reset = megasas_check_reset_fusion, 5377 .service_isr = megasas_isr_fusion, 5378 .tasklet = megasas_complete_cmd_dpc_fusion, 5379 .init_adapter = megasas_init_adapter_fusion, 5380 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, 5381 .issue_dcmd = megasas_issue_dcmd_fusion, 5382};
~/
Read-only file preview.