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