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