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