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