1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2009-2013 LSI Corporation 5 * Copyright (c) 2013-2016 Avago Technologies 6 * Copyright (c) 2016-2018 Broadcom Inc. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * as published by the Free Software Foundation; either version 2 11 * of the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program. If not, see <http://www.gnu.org/licenses/>. 20 * 21 * FILE: megaraid_sas_fusion.c 22 * 23 * Authors: Broadcom Inc. 24 * Sumant Patro 25 * Adam Radford 26 * Kashyap Desai <kashyap.desai@broadcom.com> 27 * Sumit Saxena <sumit.saxena@broadcom.com> 28 * 29 * Send feedback to: megaraidlinux.pdl@broadcom.com 30 */ 31 32 #include <linux/kernel.h> 33 #include <linux/types.h> 34 #include <linux/pci.h> 35 #include <linux/list.h> 36 #include <linux/moduleparam.h> 37 #include <linux/module.h> 38 #include <linux/spinlock.h> 39 #include <linux/interrupt.h> 40 #include <linux/delay.h> 41 #include <linux/uio.h> 42 #include <linux/uaccess.h> 43 #include <linux/fs.h> 44 #include <linux/compat.h> 45 #include <linux/blkdev.h> 46 #include <linux/mutex.h> 47 #include <linux/poll.h> 48 #include <linux/vmalloc.h> 49 #include <linux/workqueue.h> 50 51 #include <scsi/scsi.h> 52 #include <scsi/scsi_cmnd.h> 53 #include <scsi/scsi_device.h> 54 #include <scsi/scsi_host.h> 55 #include <scsi/scsi_dbg.h> 56 #include <linux/dmi.h> 57 58 #include "megaraid_sas_fusion.h" 59 #include "megaraid_sas.h" 60 61 62 extern void megasas_free_cmds(struct megasas_instance *instance); 63 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance 64 *instance); 65 extern void 66 megasas_complete_cmd(struct megasas_instance *instance, 67 struct megasas_cmd *cmd, u8 alt_status); 68 int 69 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 70 int seconds); 71 72 void 73 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd); 74 int megasas_alloc_cmds(struct megasas_instance *instance); 75 int 76 megasas_clear_intr_fusion(struct megasas_instance *instance); 77 int 78 megasas_issue_polled(struct megasas_instance *instance, 79 struct megasas_cmd *cmd); 80 void 81 megasas_check_and_restore_queue_depth(struct megasas_instance *instance); 82 83 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 84 void megaraid_sas_kill_hba(struct megasas_instance *instance); 85 86 extern u32 megasas_dbg_lvl; 87 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 88 int initial); 89 void megasas_start_timer(struct megasas_instance *instance); 90 extern struct megasas_mgmt_info megasas_mgmt_info; 91 extern unsigned int resetwaittime; 92 extern unsigned int dual_qdepth_disable; 93 static void megasas_free_rdpq_fusion(struct megasas_instance *instance); 94 static void megasas_free_reply_fusion(struct megasas_instance *instance); 95 static inline 96 void megasas_configure_queue_sizes(struct megasas_instance *instance); 97 static void megasas_fusion_crash_dump(struct megasas_instance *instance); 98 extern u32 megasas_readl(struct megasas_instance *instance, 99 const volatile void __iomem *addr); 100 101 /** 102 * megasas_check_same_4gb_region - check if allocation 103 * crosses same 4GB boundary or not 104 * @instance - adapter's soft instance 105 * start_addr - start address of DMA allocation 106 * size - size of allocation in bytes 107 * return - true : allocation does not cross same 108 * 4GB boundary 109 * false: allocation crosses same 110 * 4GB boundary 111 */ 112 static inline bool megasas_check_same_4gb_region 113 (struct megasas_instance *instance, dma_addr_t start_addr, size_t size) 114 { 115 dma_addr_t end_addr; 116 117 end_addr = start_addr + size; 118 119 if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) { 120 dev_err(&instance->pdev->dev, 121 "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n", 122 (unsigned long long)start_addr, 123 (unsigned long long)end_addr); 124 return false; 125 } 126 127 return true; 128 } 129 130 /** 131 * megasas_enable_intr_fusion - Enables interrupts 132 * @regs: MFI register set 133 */ 134 void 135 megasas_enable_intr_fusion(struct megasas_instance *instance) 136 { 137 struct megasas_register_set __iomem *regs; 138 regs = instance->reg_set; 139 140 instance->mask_interrupts = 0; 141 /* For Thunderbolt/Invader also clear intr on enable */ 142 writel(~0, ®s->outbound_intr_status); 143 readl(®s->outbound_intr_status); 144 145 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 146 147 /* Dummy readl to force pci flush */ 148 readl(®s->outbound_intr_mask); 149 } 150 151 /** 152 * megasas_disable_intr_fusion - Disables interrupt 153 * @regs: MFI register set 154 */ 155 void 156 megasas_disable_intr_fusion(struct megasas_instance *instance) 157 { 158 u32 mask = 0xFFFFFFFF; 159 u32 status; 160 struct megasas_register_set __iomem *regs; 161 regs = instance->reg_set; 162 instance->mask_interrupts = 1; 163 164 writel(mask, ®s->outbound_intr_mask); 165 /* Dummy readl to force pci flush */ 166 status = readl(®s->outbound_intr_mask); 167 } 168 169 int 170 megasas_clear_intr_fusion(struct megasas_instance *instance) 171 { 172 u32 status; 173 struct megasas_register_set __iomem *regs; 174 regs = instance->reg_set; 175 /* 176 * Check if it is our interrupt 177 */ 178 status = readl(®s->outbound_intr_status); 179 180 if (status & 1) { 181 writel(status, ®s->outbound_intr_status); 182 readl(®s->outbound_intr_status); 183 return 1; 184 } 185 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) 186 return 0; 187 188 return 1; 189 } 190 191 /** 192 * megasas_get_cmd_fusion - Get a command from the free pool 193 * @instance: Adapter soft state 194 * 195 * Returns a blk_tag indexed mpt frame 196 */ 197 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance 198 *instance, u32 blk_tag) 199 { 200 struct fusion_context *fusion; 201 202 fusion = instance->ctrl_context; 203 return fusion->cmd_list[blk_tag]; 204 } 205 206 /** 207 * megasas_return_cmd_fusion - Return a cmd to free command pool 208 * @instance: Adapter soft state 209 * @cmd: Command packet to be returned to free command pool 210 */ 211 inline void megasas_return_cmd_fusion(struct megasas_instance *instance, 212 struct megasas_cmd_fusion *cmd) 213 { 214 cmd->scmd = NULL; 215 memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE); 216 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 217 cmd->cmd_completed = false; 218 } 219 220 /** 221 * megasas_fire_cmd_fusion - Sends command to the FW 222 * @instance: Adapter soft state 223 * @req_desc: 64bit Request descriptor 224 * 225 * Perform PCI Write. 226 */ 227 228 static void 229 megasas_fire_cmd_fusion(struct megasas_instance *instance, 230 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc) 231 { 232 #if defined(writeq) && defined(CONFIG_64BIT) 233 u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) | 234 le32_to_cpu(req_desc->u.low)); 235 236 writeq(req_data, &instance->reg_set->inbound_low_queue_port); 237 #else 238 unsigned long flags; 239 spin_lock_irqsave(&instance->hba_lock, flags); 240 writel(le32_to_cpu(req_desc->u.low), 241 &instance->reg_set->inbound_low_queue_port); 242 writel(le32_to_cpu(req_desc->u.high), 243 &instance->reg_set->inbound_high_queue_port); 244 mmiowb(); 245 spin_unlock_irqrestore(&instance->hba_lock, flags); 246 #endif 247 } 248 249 /** 250 * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here 251 * @instance: Adapter soft state 252 * fw_boot_context: Whether this function called during probe or after OCR 253 * 254 * This function is only for fusion controllers. 255 * Update host can queue, if firmware downgrade max supported firmware commands. 256 * Firmware upgrade case will be skiped because underlying firmware has 257 * more resource than exposed to the OS. 258 * 259 */ 260 static void 261 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context) 262 { 263 u16 cur_max_fw_cmds = 0; 264 u16 ldio_threshold = 0; 265 struct megasas_register_set __iomem *reg_set; 266 267 reg_set = instance->reg_set; 268 269 /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */ 270 if (instance->adapter_type < VENTURA_SERIES) 271 cur_max_fw_cmds = 272 megasas_readl(instance, 273 &instance->reg_set->outbound_scratch_pad_2) & 0x00FFFF; 274 275 if (dual_qdepth_disable || !cur_max_fw_cmds) 276 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF; 277 else 278 ldio_threshold = 279 (instance->instancet->read_fw_status_reg(instance) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS; 280 281 dev_info(&instance->pdev->dev, 282 "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n", 283 cur_max_fw_cmds, ldio_threshold); 284 285 if (fw_boot_context == OCR_CONTEXT) { 286 cur_max_fw_cmds = cur_max_fw_cmds - 1; 287 if (cur_max_fw_cmds < instance->max_fw_cmds) { 288 instance->cur_can_queue = 289 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS + 290 MEGASAS_FUSION_IOCTL_CMDS); 291 instance->host->can_queue = instance->cur_can_queue; 292 instance->ldio_threshold = ldio_threshold; 293 } 294 } else { 295 instance->max_fw_cmds = cur_max_fw_cmds; 296 instance->ldio_threshold = ldio_threshold; 297 298 if (reset_devices) 299 instance->max_fw_cmds = min(instance->max_fw_cmds, 300 (u16)MEGASAS_KDUMP_QUEUE_DEPTH); 301 /* 302 * Reduce the max supported cmds by 1. This is to ensure that the 303 * reply_q_sz (1 more than the max cmd that driver may send) 304 * does not exceed max cmds that the FW can support 305 */ 306 instance->max_fw_cmds = instance->max_fw_cmds-1; 307 } 308 } 309 /** 310 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool 311 * @instance: Adapter soft state 312 */ 313 void 314 megasas_free_cmds_fusion(struct megasas_instance *instance) 315 { 316 int i; 317 struct fusion_context *fusion = instance->ctrl_context; 318 struct megasas_cmd_fusion *cmd; 319 320 if (fusion->sense) 321 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 322 fusion->sense_phys_addr); 323 324 /* SG */ 325 if (fusion->cmd_list) { 326 for (i = 0; i < instance->max_mpt_cmds; i++) { 327 cmd = fusion->cmd_list[i]; 328 if (cmd) { 329 if (cmd->sg_frame) 330 dma_pool_free(fusion->sg_dma_pool, 331 cmd->sg_frame, 332 cmd->sg_frame_phys_addr); 333 } 334 kfree(cmd); 335 } 336 kfree(fusion->cmd_list); 337 } 338 339 if (fusion->sg_dma_pool) { 340 dma_pool_destroy(fusion->sg_dma_pool); 341 fusion->sg_dma_pool = NULL; 342 } 343 if (fusion->sense_dma_pool) { 344 dma_pool_destroy(fusion->sense_dma_pool); 345 fusion->sense_dma_pool = NULL; 346 } 347 348 349 /* Reply Frame, Desc*/ 350 if (instance->is_rdpq) 351 megasas_free_rdpq_fusion(instance); 352 else 353 megasas_free_reply_fusion(instance); 354 355 /* Request Frame, Desc*/ 356 if (fusion->req_frames_desc) 357 dma_free_coherent(&instance->pdev->dev, 358 fusion->request_alloc_sz, fusion->req_frames_desc, 359 fusion->req_frames_desc_phys); 360 if (fusion->io_request_frames) 361 dma_pool_free(fusion->io_request_frames_pool, 362 fusion->io_request_frames, 363 fusion->io_request_frames_phys); 364 if (fusion->io_request_frames_pool) { 365 dma_pool_destroy(fusion->io_request_frames_pool); 366 fusion->io_request_frames_pool = NULL; 367 } 368 } 369 370 /** 371 * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames 372 * @instance: Adapter soft state 373 * 374 */ 375 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance) 376 { 377 int i; 378 u16 max_cmd; 379 struct fusion_context *fusion; 380 struct megasas_cmd_fusion *cmd; 381 int sense_sz; 382 u32 offset; 383 384 fusion = instance->ctrl_context; 385 max_cmd = instance->max_fw_cmds; 386 sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE; 387 388 fusion->sg_dma_pool = 389 dma_pool_create("mr_sg", &instance->pdev->dev, 390 instance->max_chain_frame_sz, 391 MR_DEFAULT_NVME_PAGE_SIZE, 0); 392 /* SCSI_SENSE_BUFFERSIZE = 96 bytes */ 393 fusion->sense_dma_pool = 394 dma_pool_create("mr_sense", &instance->pdev->dev, 395 sense_sz, 64, 0); 396 397 if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) { 398 dev_err(&instance->pdev->dev, 399 "Failed from %s %d\n", __func__, __LINE__); 400 return -ENOMEM; 401 } 402 403 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 404 GFP_KERNEL, &fusion->sense_phys_addr); 405 if (!fusion->sense) { 406 dev_err(&instance->pdev->dev, 407 "failed from %s %d\n", __func__, __LINE__); 408 return -ENOMEM; 409 } 410 411 /* sense buffer, request frame and reply desc pool requires to be in 412 * same 4 gb region. Below function will check this. 413 * In case of failure, new pci pool will be created with updated 414 * alignment. 415 * Older allocation and pool will be destroyed. 416 * Alignment will be used such a way that next allocation if success, 417 * will always meet same 4gb region requirement. 418 * Actual requirement is not alignment, but we need start and end of 419 * DMA address must have same upper 32 bit address. 420 */ 421 422 if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr, 423 sense_sz)) { 424 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 425 fusion->sense_phys_addr); 426 fusion->sense = NULL; 427 dma_pool_destroy(fusion->sense_dma_pool); 428 429 fusion->sense_dma_pool = 430 dma_pool_create("mr_sense_align", &instance->pdev->dev, 431 sense_sz, roundup_pow_of_two(sense_sz), 432 0); 433 if (!fusion->sense_dma_pool) { 434 dev_err(&instance->pdev->dev, 435 "Failed from %s %d\n", __func__, __LINE__); 436 return -ENOMEM; 437 } 438 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 439 GFP_KERNEL, 440 &fusion->sense_phys_addr); 441 if (!fusion->sense) { 442 dev_err(&instance->pdev->dev, 443 "failed from %s %d\n", __func__, __LINE__); 444 return -ENOMEM; 445 } 446 } 447 448 /* 449 * Allocate and attach a frame to each of the commands in cmd_list 450 */ 451 for (i = 0; i < max_cmd; i++) { 452 cmd = fusion->cmd_list[i]; 453 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool, 454 GFP_KERNEL, &cmd->sg_frame_phys_addr); 455 456 offset = SCSI_SENSE_BUFFERSIZE * i; 457 cmd->sense = (u8 *)fusion->sense + offset; 458 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 459 460 if (!cmd->sg_frame) { 461 dev_err(&instance->pdev->dev, 462 "Failed from %s %d\n", __func__, __LINE__); 463 return -ENOMEM; 464 } 465 } 466 467 /* create sense buffer for the raid 1/10 fp */ 468 for (i = max_cmd; i < instance->max_mpt_cmds; i++) { 469 cmd = fusion->cmd_list[i]; 470 offset = SCSI_SENSE_BUFFERSIZE * i; 471 cmd->sense = (u8 *)fusion->sense + offset; 472 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 473 474 } 475 476 return 0; 477 } 478 479 int 480 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance) 481 { 482 u32 max_mpt_cmd, i, j; 483 struct fusion_context *fusion; 484 485 fusion = instance->ctrl_context; 486 487 max_mpt_cmd = instance->max_mpt_cmds; 488 489 /* 490 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. 491 * Allocate the dynamic array first and then allocate individual 492 * commands. 493 */ 494 fusion->cmd_list = 495 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *), 496 GFP_KERNEL); 497 if (!fusion->cmd_list) { 498 dev_err(&instance->pdev->dev, 499 "Failed from %s %d\n", __func__, __LINE__); 500 return -ENOMEM; 501 } 502 503 for (i = 0; i < max_mpt_cmd; i++) { 504 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion), 505 GFP_KERNEL); 506 if (!fusion->cmd_list[i]) { 507 for (j = 0; j < i; j++) 508 kfree(fusion->cmd_list[j]); 509 kfree(fusion->cmd_list); 510 dev_err(&instance->pdev->dev, 511 "Failed from %s %d\n", __func__, __LINE__); 512 return -ENOMEM; 513 } 514 } 515 516 return 0; 517 } 518 int 519 megasas_alloc_request_fusion(struct megasas_instance *instance) 520 { 521 struct fusion_context *fusion; 522 523 fusion = instance->ctrl_context; 524 525 retry_alloc: 526 fusion->io_request_frames_pool = 527 dma_pool_create("mr_ioreq", &instance->pdev->dev, 528 fusion->io_frames_alloc_sz, 16, 0); 529 530 if (!fusion->io_request_frames_pool) { 531 dev_err(&instance->pdev->dev, 532 "Failed from %s %d\n", __func__, __LINE__); 533 return -ENOMEM; 534 } 535 536 fusion->io_request_frames = 537 dma_pool_alloc(fusion->io_request_frames_pool, 538 GFP_KERNEL, &fusion->io_request_frames_phys); 539 if (!fusion->io_request_frames) { 540 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) { 541 instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT; 542 dma_pool_destroy(fusion->io_request_frames_pool); 543 megasas_configure_queue_sizes(instance); 544 goto retry_alloc; 545 } else { 546 dev_err(&instance->pdev->dev, 547 "Failed from %s %d\n", __func__, __LINE__); 548 return -ENOMEM; 549 } 550 } 551 552 if (!megasas_check_same_4gb_region(instance, 553 fusion->io_request_frames_phys, 554 fusion->io_frames_alloc_sz)) { 555 dma_pool_free(fusion->io_request_frames_pool, 556 fusion->io_request_frames, 557 fusion->io_request_frames_phys); 558 fusion->io_request_frames = NULL; 559 dma_pool_destroy(fusion->io_request_frames_pool); 560 561 fusion->io_request_frames_pool = 562 dma_pool_create("mr_ioreq_align", 563 &instance->pdev->dev, 564 fusion->io_frames_alloc_sz, 565 roundup_pow_of_two(fusion->io_frames_alloc_sz), 566 0); 567 568 if (!fusion->io_request_frames_pool) { 569 dev_err(&instance->pdev->dev, 570 "Failed from %s %d\n", __func__, __LINE__); 571 return -ENOMEM; 572 } 573 574 fusion->io_request_frames = 575 dma_pool_alloc(fusion->io_request_frames_pool, 576 GFP_KERNEL, 577 &fusion->io_request_frames_phys); 578 579 if (!fusion->io_request_frames) { 580 dev_err(&instance->pdev->dev, 581 "Failed from %s %d\n", __func__, __LINE__); 582 return -ENOMEM; 583 } 584 } 585 586 fusion->req_frames_desc = 587 dma_alloc_coherent(&instance->pdev->dev, 588 fusion->request_alloc_sz, 589 &fusion->req_frames_desc_phys, GFP_KERNEL); 590 if (!fusion->req_frames_desc) { 591 dev_err(&instance->pdev->dev, 592 "Failed from %s %d\n", __func__, __LINE__); 593 return -ENOMEM; 594 } 595 596 return 0; 597 } 598 599 int 600 megasas_alloc_reply_fusion(struct megasas_instance *instance) 601 { 602 int i, count; 603 struct fusion_context *fusion; 604 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 605 fusion = instance->ctrl_context; 606 607 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 608 fusion->reply_frames_desc_pool = 609 dma_pool_create("mr_reply", &instance->pdev->dev, 610 fusion->reply_alloc_sz * count, 16, 0); 611 612 if (!fusion->reply_frames_desc_pool) { 613 dev_err(&instance->pdev->dev, 614 "Failed from %s %d\n", __func__, __LINE__); 615 return -ENOMEM; 616 } 617 618 fusion->reply_frames_desc[0] = 619 dma_pool_alloc(fusion->reply_frames_desc_pool, 620 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]); 621 if (!fusion->reply_frames_desc[0]) { 622 dev_err(&instance->pdev->dev, 623 "Failed from %s %d\n", __func__, __LINE__); 624 return -ENOMEM; 625 } 626 627 if (!megasas_check_same_4gb_region(instance, 628 fusion->reply_frames_desc_phys[0], 629 (fusion->reply_alloc_sz * count))) { 630 dma_pool_free(fusion->reply_frames_desc_pool, 631 fusion->reply_frames_desc[0], 632 fusion->reply_frames_desc_phys[0]); 633 fusion->reply_frames_desc[0] = NULL; 634 dma_pool_destroy(fusion->reply_frames_desc_pool); 635 636 fusion->reply_frames_desc_pool = 637 dma_pool_create("mr_reply_align", 638 &instance->pdev->dev, 639 fusion->reply_alloc_sz * count, 640 roundup_pow_of_two(fusion->reply_alloc_sz * count), 641 0); 642 643 if (!fusion->reply_frames_desc_pool) { 644 dev_err(&instance->pdev->dev, 645 "Failed from %s %d\n", __func__, __LINE__); 646 return -ENOMEM; 647 } 648 649 fusion->reply_frames_desc[0] = 650 dma_pool_alloc(fusion->reply_frames_desc_pool, 651 GFP_KERNEL, 652 &fusion->reply_frames_desc_phys[0]); 653 654 if (!fusion->reply_frames_desc[0]) { 655 dev_err(&instance->pdev->dev, 656 "Failed from %s %d\n", __func__, __LINE__); 657 return -ENOMEM; 658 } 659 } 660 661 reply_desc = fusion->reply_frames_desc[0]; 662 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) 663 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 664 665 /* This is not a rdpq mode, but driver still populate 666 * reply_frame_desc array to use same msix index in ISR path. 667 */ 668 for (i = 0; i < (count - 1); i++) 669 fusion->reply_frames_desc[i + 1] = 670 fusion->reply_frames_desc[i] + 671 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION); 672 673 return 0; 674 } 675 676 int 677 megasas_alloc_rdpq_fusion(struct megasas_instance *instance) 678 { 679 int i, j, k, msix_count; 680 struct fusion_context *fusion; 681 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 682 union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT]; 683 dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT]; 684 u8 dma_alloc_count, abs_index; 685 u32 chunk_size, array_size, offset; 686 687 fusion = instance->ctrl_context; 688 chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK; 689 array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * 690 MAX_MSIX_QUEUES_FUSION; 691 692 fusion->rdpq_virt = dma_zalloc_coherent(&instance->pdev->dev, 693 array_size, &fusion->rdpq_phys, GFP_KERNEL); 694 if (!fusion->rdpq_virt) { 695 dev_err(&instance->pdev->dev, 696 "Failed from %s %d\n", __func__, __LINE__); 697 return -ENOMEM; 698 } 699 700 msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 701 702 fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq", 703 &instance->pdev->dev, 704 chunk_size, 16, 0); 705 fusion->reply_frames_desc_pool_align = 706 dma_pool_create("mr_rdpq_align", 707 &instance->pdev->dev, 708 chunk_size, 709 roundup_pow_of_two(chunk_size), 710 0); 711 712 if (!fusion->reply_frames_desc_pool || 713 !fusion->reply_frames_desc_pool_align) { 714 dev_err(&instance->pdev->dev, 715 "Failed from %s %d\n", __func__, __LINE__); 716 return -ENOMEM; 717 } 718 719 /* 720 * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and 721 * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be 722 * within 4GB boundary and also reply queues in a set must have same 723 * upper 32-bits in their memory address. so here driver is allocating the 724 * DMA'able memory for reply queues according. Driver uses limitation of 725 * VENTURA_SERIES to manage INVADER_SERIES as well. 726 */ 727 dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK); 728 729 for (i = 0; i < dma_alloc_count; i++) { 730 rdpq_chunk_virt[i] = 731 dma_pool_alloc(fusion->reply_frames_desc_pool, 732 GFP_KERNEL, &rdpq_chunk_phys[i]); 733 if (!rdpq_chunk_virt[i]) { 734 dev_err(&instance->pdev->dev, 735 "Failed from %s %d\n", __func__, __LINE__); 736 return -ENOMEM; 737 } 738 /* reply desc pool requires to be in same 4 gb region. 739 * Below function will check this. 740 * In case of failure, new pci pool will be created with updated 741 * alignment. 742 * For RDPQ buffers, driver always allocate two separate pci pool. 743 * Alignment will be used such a way that next allocation if 744 * success, will always meet same 4gb region requirement. 745 * rdpq_tracker keep track of each buffer's physical, 746 * virtual address and pci pool descriptor. It will help driver 747 * while freeing the resources. 748 * 749 */ 750 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i], 751 chunk_size)) { 752 dma_pool_free(fusion->reply_frames_desc_pool, 753 rdpq_chunk_virt[i], 754 rdpq_chunk_phys[i]); 755 756 rdpq_chunk_virt[i] = 757 dma_pool_alloc(fusion->reply_frames_desc_pool_align, 758 GFP_KERNEL, &rdpq_chunk_phys[i]); 759 if (!rdpq_chunk_virt[i]) { 760 dev_err(&instance->pdev->dev, 761 "Failed from %s %d\n", 762 __func__, __LINE__); 763 return -ENOMEM; 764 } 765 fusion->rdpq_tracker[i].dma_pool_ptr = 766 fusion->reply_frames_desc_pool_align; 767 } else { 768 fusion->rdpq_tracker[i].dma_pool_ptr = 769 fusion->reply_frames_desc_pool; 770 } 771 772 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i]; 773 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i]; 774 } 775 776 for (k = 0; k < dma_alloc_count; k++) { 777 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) { 778 abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i; 779 780 if (abs_index == msix_count) 781 break; 782 offset = fusion->reply_alloc_sz * i; 783 fusion->rdpq_virt[abs_index].RDPQBaseAddress = 784 cpu_to_le64(rdpq_chunk_phys[k] + offset); 785 fusion->reply_frames_desc_phys[abs_index] = 786 rdpq_chunk_phys[k] + offset; 787 fusion->reply_frames_desc[abs_index] = 788 (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset); 789 790 reply_desc = fusion->reply_frames_desc[abs_index]; 791 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++) 792 reply_desc->Words = ULLONG_MAX; 793 } 794 } 795 796 return 0; 797 } 798 799 static void 800 megasas_free_rdpq_fusion(struct megasas_instance *instance) { 801 802 int i; 803 struct fusion_context *fusion; 804 805 fusion = instance->ctrl_context; 806 807 for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) { 808 if (fusion->rdpq_tracker[i].pool_entry_virt) 809 dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr, 810 fusion->rdpq_tracker[i].pool_entry_virt, 811 fusion->rdpq_tracker[i].pool_entry_phys); 812 813 } 814 815 dma_pool_destroy(fusion->reply_frames_desc_pool); 816 dma_pool_destroy(fusion->reply_frames_desc_pool_align); 817 818 if (fusion->rdpq_virt) 819 dma_free_coherent(&instance->pdev->dev, 820 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION, 821 fusion->rdpq_virt, fusion->rdpq_phys); 822 } 823 824 static void 825 megasas_free_reply_fusion(struct megasas_instance *instance) { 826 827 struct fusion_context *fusion; 828 829 fusion = instance->ctrl_context; 830 831 if (fusion->reply_frames_desc[0]) 832 dma_pool_free(fusion->reply_frames_desc_pool, 833 fusion->reply_frames_desc[0], 834 fusion->reply_frames_desc_phys[0]); 835 836 dma_pool_destroy(fusion->reply_frames_desc_pool); 837 838 } 839 840 841 /** 842 * megasas_alloc_cmds_fusion - Allocates the command packets 843 * @instance: Adapter soft state 844 * 845 * 846 * Each frame has a 32-bit field called context. This context is used to get 847 * back the megasas_cmd_fusion from the frame when a frame gets completed 848 * In this driver, the 32 bit values are the indices into an array cmd_list. 849 * This array is used only to look up the megasas_cmd_fusion given the context. 850 * The free commands themselves are maintained in a linked list called cmd_pool. 851 * 852 * cmds are formed in the io_request and sg_frame members of the 853 * megasas_cmd_fusion. The context field is used to get a request descriptor 854 * and is used as SMID of the cmd. 855 * SMID value range is from 1 to max_fw_cmds. 856 */ 857 int 858 megasas_alloc_cmds_fusion(struct megasas_instance *instance) 859 { 860 int i; 861 struct fusion_context *fusion; 862 struct megasas_cmd_fusion *cmd; 863 u32 offset; 864 dma_addr_t io_req_base_phys; 865 u8 *io_req_base; 866 867 868 fusion = instance->ctrl_context; 869 870 if (megasas_alloc_request_fusion(instance)) 871 goto fail_exit; 872 873 if (instance->is_rdpq) { 874 if (megasas_alloc_rdpq_fusion(instance)) 875 goto fail_exit; 876 } else 877 if (megasas_alloc_reply_fusion(instance)) 878 goto fail_exit; 879 880 if (megasas_alloc_cmdlist_fusion(instance)) 881 goto fail_exit; 882 883 dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n", 884 instance->max_fw_cmds); 885 886 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */ 887 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 888 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 889 890 /* 891 * Add all the commands to command pool (fusion->cmd_pool) 892 */ 893 894 /* SMID 0 is reserved. Set SMID/index from 1 */ 895 for (i = 0; i < instance->max_mpt_cmds; i++) { 896 cmd = fusion->cmd_list[i]; 897 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; 898 memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); 899 cmd->index = i + 1; 900 cmd->scmd = NULL; 901 cmd->sync_cmd_idx = 902 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ? 903 (i - instance->max_scsi_cmds) : 904 (u32)ULONG_MAX; /* Set to Invalid */ 905 cmd->instance = instance; 906 cmd->io_request = 907 (struct MPI2_RAID_SCSI_IO_REQUEST *) 908 (io_req_base + offset); 909 memset(cmd->io_request, 0, 910 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); 911 cmd->io_request_phys_addr = io_req_base_phys + offset; 912 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 913 } 914 915 if (megasas_create_sg_sense_fusion(instance)) 916 goto fail_exit; 917 918 return 0; 919 920 fail_exit: 921 megasas_free_cmds_fusion(instance); 922 return -ENOMEM; 923 } 924 925 /** 926 * wait_and_poll - Issues a polling command 927 * @instance: Adapter soft state 928 * @cmd: Command packet to be issued 929 * 930 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 931 */ 932 int 933 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 934 int seconds) 935 { 936 int i; 937 struct megasas_header *frame_hdr = &cmd->frame->hdr; 938 struct fusion_context *fusion; 939 940 u32 msecs = seconds * 1000; 941 942 fusion = instance->ctrl_context; 943 /* 944 * Wait for cmd_status to change 945 */ 946 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { 947 rmb(); 948 msleep(20); 949 } 950 951 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS) 952 return DCMD_TIMEOUT; 953 else if (frame_hdr->cmd_status == MFI_STAT_OK) 954 return DCMD_SUCCESS; 955 else 956 return DCMD_FAILED; 957 } 958 959 /** 960 * megasas_ioc_init_fusion - Initializes the FW 961 * @instance: Adapter soft state 962 * 963 * Issues the IOC Init cmd 964 */ 965 int 966 megasas_ioc_init_fusion(struct megasas_instance *instance) 967 { 968 struct megasas_init_frame *init_frame; 969 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL; 970 dma_addr_t ioc_init_handle; 971 struct megasas_cmd *cmd; 972 u8 ret, cur_rdpq_mode; 973 struct fusion_context *fusion; 974 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc; 975 int i; 976 struct megasas_header *frame_hdr; 977 const char *sys_info; 978 MFI_CAPABILITIES *drv_ops; 979 u32 scratch_pad_1; 980 ktime_t time; 981 bool cur_fw_64bit_dma_capable; 982 983 fusion = instance->ctrl_context; 984 985 ioc_init_handle = fusion->ioc_init_request_phys; 986 IOCInitMessage = fusion->ioc_init_request; 987 988 cmd = fusion->ioc_init_cmd; 989 990 scratch_pad_1 = megasas_readl 991 (instance, &instance->reg_set->outbound_scratch_pad_1); 992 993 cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0; 994 995 if (instance->adapter_type == INVADER_SERIES) { 996 cur_fw_64bit_dma_capable = 997 (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false; 998 999 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) { 1000 dev_err(&instance->pdev->dev, "Driver was operating on 64bit " 1001 "DMA mask, but upcoming FW does not support 64bit DMA mask\n"); 1002 megaraid_sas_kill_hba(instance); 1003 ret = 1; 1004 goto fail_fw_init; 1005 } 1006 } 1007 1008 if (instance->is_rdpq && !cur_rdpq_mode) { 1009 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*" 1010 " from RDPQ mode to non RDPQ mode\n"); 1011 ret = 1; 1012 goto fail_fw_init; 1013 } 1014 1015 instance->fw_sync_cache_support = (scratch_pad_1 & 1016 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0; 1017 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n", 1018 instance->fw_sync_cache_support ? "Yes" : "No"); 1019 1020 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); 1021 1022 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; 1023 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; 1024 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION); 1025 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); 1026 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4); 1027 1028 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth); 1029 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ? 1030 cpu_to_le64(fusion->rdpq_phys) : 1031 cpu_to_le64(fusion->reply_frames_desc_phys[0]); 1032 IOCInitMessage->MsgFlags = instance->is_rdpq ? 1033 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0; 1034 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); 1035 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr)); 1036 IOCInitMessage->HostMSIxVectors = instance->msix_vectors; 1037 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT; 1038 1039 time = ktime_get_real(); 1040 /* Convert to milliseconds as per FW requirement */ 1041 IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time)); 1042 1043 init_frame = (struct megasas_init_frame *)cmd->frame; 1044 memset(init_frame, 0, IOC_INIT_FRAME_SIZE); 1045 1046 frame_hdr = &cmd->frame->hdr; 1047 frame_hdr->cmd_status = 0xFF; 1048 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1049 1050 init_frame->cmd = MFI_CMD_INIT; 1051 init_frame->cmd_status = 0xFF; 1052 1053 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations); 1054 1055 /* driver support Extended MSIX */ 1056 if (instance->adapter_type >= INVADER_SERIES) 1057 drv_ops->mfi_capabilities.support_additional_msix = 1; 1058 /* driver supports HA / Remote LUN over Fast Path interface */ 1059 drv_ops->mfi_capabilities.support_fp_remote_lun = 1; 1060 1061 drv_ops->mfi_capabilities.support_max_255lds = 1; 1062 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1; 1063 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1; 1064 1065 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN) 1066 drv_ops->mfi_capabilities.support_ext_io_size = 1; 1067 1068 drv_ops->mfi_capabilities.support_fp_rlbypass = 1; 1069 if (!dual_qdepth_disable) 1070 drv_ops->mfi_capabilities.support_ext_queue_depth = 1; 1071 1072 drv_ops->mfi_capabilities.support_qd_throttling = 1; 1073 drv_ops->mfi_capabilities.support_pd_map_target_id = 1; 1074 drv_ops->mfi_capabilities.support_nvme_passthru = 1; 1075 1076 if (instance->consistent_mask_64bit) 1077 drv_ops->mfi_capabilities.support_64bit_mode = 1; 1078 1079 /* Convert capability to LE32 */ 1080 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); 1081 1082 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID); 1083 if (instance->system_info_buf && sys_info) { 1084 memcpy(instance->system_info_buf->systemId, sys_info, 1085 strlen(sys_info) > 64 ? 64 : strlen(sys_info)); 1086 instance->system_info_buf->systemIdLength = 1087 strlen(sys_info) > 64 ? 64 : strlen(sys_info); 1088 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h)); 1089 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h)); 1090 } 1091 1092 init_frame->queue_info_new_phys_addr_hi = 1093 cpu_to_le32(upper_32_bits(ioc_init_handle)); 1094 init_frame->queue_info_new_phys_addr_lo = 1095 cpu_to_le32(lower_32_bits(ioc_init_handle)); 1096 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); 1097 1098 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr)); 1099 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr)); 1100 req_desc.MFAIo.RequestFlags = 1101 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << 1102 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 1103 1104 /* 1105 * disable the intr before firing the init frame 1106 */ 1107 instance->instancet->disable_intr(instance); 1108 1109 for (i = 0; i < (10 * 1000); i += 20) { 1110 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1) 1111 msleep(20); 1112 else 1113 break; 1114 } 1115 1116 megasas_fire_cmd_fusion(instance, &req_desc); 1117 1118 wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS); 1119 1120 frame_hdr = &cmd->frame->hdr; 1121 if (frame_hdr->cmd_status != 0) { 1122 ret = 1; 1123 goto fail_fw_init; 1124 } 1125 1126 return 0; 1127 1128 fail_fw_init: 1129 dev_err(&instance->pdev->dev, 1130 "Init cmd return status FAILED for SCSI host %d\n", 1131 instance->host->host_no); 1132 1133 return ret; 1134 } 1135 1136 /** 1137 * megasas_sync_pd_seq_num - JBOD SEQ MAP 1138 * @instance: Adapter soft state 1139 * @pend: set to 1, if it is pended jbod map. 1140 * 1141 * Issue Jbod map to the firmware. If it is pended command, 1142 * issue command and return. If it is first instance of jbod map 1143 * issue and receive command. 1144 */ 1145 int 1146 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { 1147 int ret = 0; 1148 u32 pd_seq_map_sz; 1149 struct megasas_cmd *cmd; 1150 struct megasas_dcmd_frame *dcmd; 1151 struct fusion_context *fusion = instance->ctrl_context; 1152 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1153 dma_addr_t pd_seq_h; 1154 1155 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; 1156 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; 1157 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 1158 (sizeof(struct MR_PD_CFG_SEQ) * 1159 (MAX_PHYSICAL_DEVICES - 1)); 1160 1161 cmd = megasas_get_cmd(instance); 1162 if (!cmd) { 1163 dev_err(&instance->pdev->dev, 1164 "Could not get mfi cmd. Fail from %s %d\n", 1165 __func__, __LINE__); 1166 return -ENOMEM; 1167 } 1168 1169 dcmd = &cmd->frame->dcmd; 1170 1171 memset(pd_sync, 0, pd_seq_map_sz); 1172 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1173 1174 if (pend) { 1175 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1176 dcmd->flags = MFI_FRAME_DIR_WRITE; 1177 instance->jbod_seq_cmd = cmd; 1178 } else { 1179 dcmd->flags = MFI_FRAME_DIR_READ; 1180 } 1181 1182 dcmd->cmd = MFI_CMD_DCMD; 1183 dcmd->cmd_status = 0xFF; 1184 dcmd->sge_count = 1; 1185 dcmd->timeout = 0; 1186 dcmd->pad_0 = 0; 1187 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz); 1188 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO); 1189 1190 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz); 1191 1192 if (pend) { 1193 instance->instancet->issue_dcmd(instance, cmd); 1194 return 0; 1195 } 1196 1197 /* Below code is only for non pended DCMD */ 1198 if (!instance->mask_interrupts) 1199 ret = megasas_issue_blocked_cmd(instance, cmd, 1200 MFI_IO_TIMEOUT_SECS); 1201 else 1202 ret = megasas_issue_polled(instance, cmd); 1203 1204 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) { 1205 dev_warn(&instance->pdev->dev, 1206 "driver supports max %d JBOD, but FW reports %d\n", 1207 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count)); 1208 ret = -EINVAL; 1209 } 1210 1211 if (ret == DCMD_TIMEOUT) 1212 megaraid_sas_kill_hba(instance); 1213 1214 if (ret == DCMD_SUCCESS) 1215 instance->pd_seq_map_id++; 1216 1217 megasas_return_cmd(instance, cmd); 1218 return ret; 1219 } 1220 1221 /* 1222 * megasas_get_ld_map_info - Returns FW's ld_map structure 1223 * @instance: Adapter soft state 1224 * @pend: Pend the command or not 1225 * Issues an internal command (DCMD) to get the FW's controller PD 1226 * list structure. This information is mainly used to find out SYSTEM 1227 * supported by the FW. 1228 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO 1229 * dcmd.mbox.b[0] - number of LDs being sync'd 1230 * dcmd.mbox.b[1] - 0 - complete command immediately. 1231 * - 1 - pend till config change 1232 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP 1233 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and 1234 * uses extended struct MR_FW_RAID_MAP_EXT 1235 */ 1236 static int 1237 megasas_get_ld_map_info(struct megasas_instance *instance) 1238 { 1239 int ret = 0; 1240 struct megasas_cmd *cmd; 1241 struct megasas_dcmd_frame *dcmd; 1242 void *ci; 1243 dma_addr_t ci_h = 0; 1244 u32 size_map_info; 1245 struct fusion_context *fusion; 1246 1247 cmd = megasas_get_cmd(instance); 1248 1249 if (!cmd) { 1250 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n"); 1251 return -ENOMEM; 1252 } 1253 1254 fusion = instance->ctrl_context; 1255 1256 if (!fusion) { 1257 megasas_return_cmd(instance, cmd); 1258 return -ENXIO; 1259 } 1260 1261 dcmd = &cmd->frame->dcmd; 1262 1263 size_map_info = fusion->current_map_sz; 1264 1265 ci = (void *) fusion->ld_map[(instance->map_id & 1)]; 1266 ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; 1267 1268 if (!ci) { 1269 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n"); 1270 megasas_return_cmd(instance, cmd); 1271 return -ENOMEM; 1272 } 1273 1274 memset(ci, 0, fusion->max_map_sz); 1275 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1276 dcmd->cmd = MFI_CMD_DCMD; 1277 dcmd->cmd_status = 0xFF; 1278 dcmd->sge_count = 1; 1279 dcmd->flags = MFI_FRAME_DIR_READ; 1280 dcmd->timeout = 0; 1281 dcmd->pad_0 = 0; 1282 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1283 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1284 1285 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1286 1287 if (!instance->mask_interrupts) 1288 ret = megasas_issue_blocked_cmd(instance, cmd, 1289 MFI_IO_TIMEOUT_SECS); 1290 else 1291 ret = megasas_issue_polled(instance, cmd); 1292 1293 if (ret == DCMD_TIMEOUT) 1294 megaraid_sas_kill_hba(instance); 1295 1296 megasas_return_cmd(instance, cmd); 1297 1298 return ret; 1299 } 1300 1301 u8 1302 megasas_get_map_info(struct megasas_instance *instance) 1303 { 1304 struct fusion_context *fusion = instance->ctrl_context; 1305 1306 fusion->fast_path_io = 0; 1307 if (!megasas_get_ld_map_info(instance)) { 1308 if (MR_ValidateMapInfo(instance, instance->map_id)) { 1309 fusion->fast_path_io = 1; 1310 return 0; 1311 } 1312 } 1313 return 1; 1314 } 1315 1316 /* 1317 * megasas_sync_map_info - Returns FW's ld_map structure 1318 * @instance: Adapter soft state 1319 * 1320 * Issues an internal command (DCMD) to get the FW's controller PD 1321 * list structure. This information is mainly used to find out SYSTEM 1322 * supported by the FW. 1323 */ 1324 int 1325 megasas_sync_map_info(struct megasas_instance *instance) 1326 { 1327 int i; 1328 struct megasas_cmd *cmd; 1329 struct megasas_dcmd_frame *dcmd; 1330 u16 num_lds; 1331 u32 size_sync_info; 1332 struct fusion_context *fusion; 1333 struct MR_LD_TARGET_SYNC *ci = NULL; 1334 struct MR_DRV_RAID_MAP_ALL *map; 1335 struct MR_LD_RAID *raid; 1336 struct MR_LD_TARGET_SYNC *ld_sync; 1337 dma_addr_t ci_h = 0; 1338 u32 size_map_info; 1339 1340 cmd = megasas_get_cmd(instance); 1341 1342 if (!cmd) { 1343 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n"); 1344 return -ENOMEM; 1345 } 1346 1347 fusion = instance->ctrl_context; 1348 1349 if (!fusion) { 1350 megasas_return_cmd(instance, cmd); 1351 return 1; 1352 } 1353 1354 map = fusion->ld_drv_map[instance->map_id & 1]; 1355 1356 num_lds = le16_to_cpu(map->raidMap.ldCount); 1357 1358 dcmd = &cmd->frame->dcmd; 1359 1360 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; 1361 1362 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1363 1364 ci = (struct MR_LD_TARGET_SYNC *) 1365 fusion->ld_map[(instance->map_id - 1) & 1]; 1366 memset(ci, 0, fusion->max_map_sz); 1367 1368 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; 1369 1370 ld_sync = (struct MR_LD_TARGET_SYNC *)ci; 1371 1372 for (i = 0; i < num_lds; i++, ld_sync++) { 1373 raid = MR_LdRaidGet(i, map); 1374 ld_sync->targetId = MR_GetLDTgtId(i, map); 1375 ld_sync->seqNum = raid->seqNum; 1376 } 1377 1378 size_map_info = fusion->current_map_sz; 1379 1380 dcmd->cmd = MFI_CMD_DCMD; 1381 dcmd->cmd_status = 0xFF; 1382 dcmd->sge_count = 1; 1383 dcmd->flags = MFI_FRAME_DIR_WRITE; 1384 dcmd->timeout = 0; 1385 dcmd->pad_0 = 0; 1386 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1387 dcmd->mbox.b[0] = num_lds; 1388 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1389 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1390 1391 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1392 1393 instance->map_update_cmd = cmd; 1394 1395 instance->instancet->issue_dcmd(instance, cmd); 1396 1397 return 0; 1398 } 1399 1400 /* 1401 * meagasas_display_intel_branding - Display branding string 1402 * @instance: per adapter object 1403 * 1404 * Return nothing. 1405 */ 1406 static void 1407 megasas_display_intel_branding(struct megasas_instance *instance) 1408 { 1409 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) 1410 return; 1411 1412 switch (instance->pdev->device) { 1413 case PCI_DEVICE_ID_LSI_INVADER: 1414 switch (instance->pdev->subsystem_device) { 1415 case MEGARAID_INTEL_RS3DC080_SSDID: 1416 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1417 instance->host->host_no, 1418 MEGARAID_INTEL_RS3DC080_BRANDING); 1419 break; 1420 case MEGARAID_INTEL_RS3DC040_SSDID: 1421 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1422 instance->host->host_no, 1423 MEGARAID_INTEL_RS3DC040_BRANDING); 1424 break; 1425 case MEGARAID_INTEL_RS3SC008_SSDID: 1426 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1427 instance->host->host_no, 1428 MEGARAID_INTEL_RS3SC008_BRANDING); 1429 break; 1430 case MEGARAID_INTEL_RS3MC044_SSDID: 1431 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1432 instance->host->host_no, 1433 MEGARAID_INTEL_RS3MC044_BRANDING); 1434 break; 1435 default: 1436 break; 1437 } 1438 break; 1439 case PCI_DEVICE_ID_LSI_FURY: 1440 switch (instance->pdev->subsystem_device) { 1441 case MEGARAID_INTEL_RS3WC080_SSDID: 1442 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1443 instance->host->host_no, 1444 MEGARAID_INTEL_RS3WC080_BRANDING); 1445 break; 1446 case MEGARAID_INTEL_RS3WC040_SSDID: 1447 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1448 instance->host->host_no, 1449 MEGARAID_INTEL_RS3WC040_BRANDING); 1450 break; 1451 default: 1452 break; 1453 } 1454 break; 1455 case PCI_DEVICE_ID_LSI_CUTLASS_52: 1456 case PCI_DEVICE_ID_LSI_CUTLASS_53: 1457 switch (instance->pdev->subsystem_device) { 1458 case MEGARAID_INTEL_RMS3BC160_SSDID: 1459 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1460 instance->host->host_no, 1461 MEGARAID_INTEL_RMS3BC160_BRANDING); 1462 break; 1463 default: 1464 break; 1465 } 1466 break; 1467 default: 1468 break; 1469 } 1470 } 1471 1472 /** 1473 * megasas_allocate_raid_maps - Allocate memory for RAID maps 1474 * @instance: Adapter soft state 1475 * 1476 * return: if success: return 0 1477 * failed: return -ENOMEM 1478 */ 1479 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) 1480 { 1481 struct fusion_context *fusion; 1482 int i = 0; 1483 1484 fusion = instance->ctrl_context; 1485 1486 fusion->drv_map_pages = get_order(fusion->drv_map_sz); 1487 1488 for (i = 0; i < 2; i++) { 1489 fusion->ld_map[i] = NULL; 1490 1491 fusion->ld_drv_map[i] = (void *) 1492 __get_free_pages(__GFP_ZERO | GFP_KERNEL, 1493 fusion->drv_map_pages); 1494 1495 if (!fusion->ld_drv_map[i]) { 1496 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); 1497 1498 if (!fusion->ld_drv_map[i]) { 1499 dev_err(&instance->pdev->dev, 1500 "Could not allocate memory for local map" 1501 " size requested: %d\n", 1502 fusion->drv_map_sz); 1503 goto ld_drv_map_alloc_fail; 1504 } 1505 } 1506 } 1507 1508 for (i = 0; i < 2; i++) { 1509 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, 1510 fusion->max_map_sz, 1511 &fusion->ld_map_phys[i], 1512 GFP_KERNEL); 1513 if (!fusion->ld_map[i]) { 1514 dev_err(&instance->pdev->dev, 1515 "Could not allocate memory for map info %s:%d\n", 1516 __func__, __LINE__); 1517 goto ld_map_alloc_fail; 1518 } 1519 } 1520 1521 return 0; 1522 1523 ld_map_alloc_fail: 1524 for (i = 0; i < 2; i++) { 1525 if (fusion->ld_map[i]) 1526 dma_free_coherent(&instance->pdev->dev, 1527 fusion->max_map_sz, 1528 fusion->ld_map[i], 1529 fusion->ld_map_phys[i]); 1530 } 1531 1532 ld_drv_map_alloc_fail: 1533 for (i = 0; i < 2; i++) { 1534 if (fusion->ld_drv_map[i]) { 1535 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 1536 vfree(fusion->ld_drv_map[i]); 1537 else 1538 free_pages((ulong)fusion->ld_drv_map[i], 1539 fusion->drv_map_pages); 1540 } 1541 } 1542 1543 return -ENOMEM; 1544 } 1545 1546 /** 1547 * megasas_configure_queue_sizes - Calculate size of request desc queue, 1548 * reply desc queue, 1549 * IO request frame queue, set can_queue. 1550 * @instance: Adapter soft state 1551 * @return: void 1552 */ 1553 static inline 1554 void megasas_configure_queue_sizes(struct megasas_instance *instance) 1555 { 1556 struct fusion_context *fusion; 1557 u16 max_cmd; 1558 1559 fusion = instance->ctrl_context; 1560 max_cmd = instance->max_fw_cmds; 1561 1562 if (instance->adapter_type >= VENTURA_SERIES) 1563 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS; 1564 else 1565 instance->max_mpt_cmds = instance->max_fw_cmds; 1566 1567 instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds; 1568 instance->cur_can_queue = instance->max_scsi_cmds; 1569 instance->host->can_queue = instance->cur_can_queue; 1570 1571 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16; 1572 1573 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * 1574 instance->max_mpt_cmds; 1575 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) * 1576 (fusion->reply_q_depth); 1577 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + 1578 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1579 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */ 1580 } 1581 1582 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance) 1583 { 1584 struct fusion_context *fusion; 1585 struct megasas_cmd *cmd; 1586 1587 fusion = instance->ctrl_context; 1588 1589 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL); 1590 1591 if (!cmd) { 1592 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1593 __func__, __LINE__); 1594 return -ENOMEM; 1595 } 1596 1597 cmd->frame = dma_alloc_coherent(&instance->pdev->dev, 1598 IOC_INIT_FRAME_SIZE, 1599 &cmd->frame_phys_addr, GFP_KERNEL); 1600 1601 if (!cmd->frame) { 1602 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1603 __func__, __LINE__); 1604 kfree(cmd); 1605 return -ENOMEM; 1606 } 1607 1608 fusion->ioc_init_cmd = cmd; 1609 return 0; 1610 } 1611 1612 /** 1613 * megasas_free_ioc_init_cmd - Free IOC INIT command frame 1614 * @instance: Adapter soft state 1615 */ 1616 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance) 1617 { 1618 struct fusion_context *fusion; 1619 1620 fusion = instance->ctrl_context; 1621 1622 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame) 1623 dma_free_coherent(&instance->pdev->dev, 1624 IOC_INIT_FRAME_SIZE, 1625 fusion->ioc_init_cmd->frame, 1626 fusion->ioc_init_cmd->frame_phys_addr); 1627 1628 kfree(fusion->ioc_init_cmd); 1629 } 1630 1631 /** 1632 * megasas_init_adapter_fusion - Initializes the FW 1633 * @instance: Adapter soft state 1634 * 1635 * This is the main function for initializing firmware. 1636 */ 1637 u32 1638 megasas_init_adapter_fusion(struct megasas_instance *instance) 1639 { 1640 struct megasas_register_set __iomem *reg_set; 1641 struct fusion_context *fusion; 1642 u32 scratch_pad_1; 1643 int i = 0, count; 1644 1645 fusion = instance->ctrl_context; 1646 1647 reg_set = instance->reg_set; 1648 1649 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT); 1650 1651 /* 1652 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames 1653 */ 1654 instance->max_mfi_cmds = 1655 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS; 1656 1657 megasas_configure_queue_sizes(instance); 1658 1659 scratch_pad_1 = megasas_readl(instance, 1660 &instance->reg_set->outbound_scratch_pad_1); 1661 /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set, 1662 * Firmware support extended IO chain frame which is 4 times more than 1663 * legacy Firmware. 1664 * Legacy Firmware - Frame size is (8 * 128) = 1K 1665 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K 1666 */ 1667 if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK) 1668 instance->max_chain_frame_sz = 1669 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1670 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO; 1671 else 1672 instance->max_chain_frame_sz = 1673 ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1674 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO; 1675 1676 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) { 1677 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n", 1678 instance->max_chain_frame_sz, 1679 MEGASAS_CHAIN_FRAME_SZ_MIN); 1680 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN; 1681 } 1682 1683 fusion->max_sge_in_main_msg = 1684 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1685 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; 1686 1687 fusion->max_sge_in_chain = 1688 instance->max_chain_frame_sz 1689 / sizeof(union MPI2_SGE_IO_UNION); 1690 1691 instance->max_num_sge = 1692 rounddown_pow_of_two(fusion->max_sge_in_main_msg 1693 + fusion->max_sge_in_chain - 2); 1694 1695 /* Used for pass thru MFI frame (DCMD) */ 1696 fusion->chain_offset_mfi_pthru = 1697 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; 1698 1699 fusion->chain_offset_io_request = 1700 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - 1701 sizeof(union MPI2_SGE_IO_UNION))/16; 1702 1703 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 1704 for (i = 0 ; i < count; i++) 1705 fusion->last_reply_idx[i] = 0; 1706 1707 /* 1708 * For fusion adapters, 3 commands for IOCTL and 8 commands 1709 * for driver's internal DCMDs. 1710 */ 1711 instance->max_scsi_cmds = instance->max_fw_cmds - 1712 (MEGASAS_FUSION_INTERNAL_CMDS + 1713 MEGASAS_FUSION_IOCTL_CMDS); 1714 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); 1715 1716 if (megasas_alloc_ioc_init_frame(instance)) 1717 return 1; 1718 1719 /* 1720 * Allocate memory for descriptors 1721 * Create a pool of commands 1722 */ 1723 if (megasas_alloc_cmds(instance)) 1724 goto fail_alloc_mfi_cmds; 1725 if (megasas_alloc_cmds_fusion(instance)) 1726 goto fail_alloc_cmds; 1727 1728 if (megasas_ioc_init_fusion(instance)) 1729 goto fail_ioc_init; 1730 1731 megasas_display_intel_branding(instance); 1732 if (megasas_get_ctrl_info(instance)) { 1733 dev_err(&instance->pdev->dev, 1734 "Could not get controller info. Fail from %s %d\n", 1735 __func__, __LINE__); 1736 goto fail_ioc_init; 1737 } 1738 1739 instance->flag_ieee = 1; 1740 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; 1741 fusion->fast_path_io = 0; 1742 1743 if (megasas_allocate_raid_maps(instance)) 1744 goto fail_ioc_init; 1745 1746 if (!megasas_get_map_info(instance)) 1747 megasas_sync_map_info(instance); 1748 1749 return 0; 1750 1751 fail_ioc_init: 1752 megasas_free_cmds_fusion(instance); 1753 fail_alloc_cmds: 1754 megasas_free_cmds(instance); 1755 fail_alloc_mfi_cmds: 1756 megasas_free_ioc_init_cmd(instance); 1757 return 1; 1758 } 1759 1760 /** 1761 * megasas_fault_detect_work - Worker function of 1762 * FW fault handling workqueue. 1763 */ 1764 static void 1765 megasas_fault_detect_work(struct work_struct *work) 1766 { 1767 struct megasas_instance *instance = 1768 container_of(work, struct megasas_instance, 1769 fw_fault_work.work); 1770 u32 fw_state, dma_state, status; 1771 1772 /* Check the fw state */ 1773 fw_state = instance->instancet->read_fw_status_reg(instance) & 1774 MFI_STATE_MASK; 1775 1776 if (fw_state == MFI_STATE_FAULT) { 1777 dma_state = instance->instancet->read_fw_status_reg(instance) & 1778 MFI_STATE_DMADONE; 1779 /* Start collecting crash, if DMA bit is done */ 1780 if (instance->crash_dump_drv_support && 1781 instance->crash_dump_app_support && dma_state) { 1782 megasas_fusion_crash_dump(instance); 1783 } else { 1784 if (instance->unload == 0) { 1785 status = megasas_reset_fusion(instance->host, 0); 1786 if (status != SUCCESS) { 1787 dev_err(&instance->pdev->dev, 1788 "Failed from %s %d, do not re-arm timer\n", 1789 __func__, __LINE__); 1790 return; 1791 } 1792 } 1793 } 1794 } 1795 1796 if (instance->fw_fault_work_q) 1797 queue_delayed_work(instance->fw_fault_work_q, 1798 &instance->fw_fault_work, 1799 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL)); 1800 } 1801 1802 int 1803 megasas_fusion_start_watchdog(struct megasas_instance *instance) 1804 { 1805 /* Check if the Fault WQ is already started */ 1806 if (instance->fw_fault_work_q) 1807 return SUCCESS; 1808 1809 INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work); 1810 1811 snprintf(instance->fault_handler_work_q_name, 1812 sizeof(instance->fault_handler_work_q_name), 1813 "poll_megasas%d_status", instance->host->host_no); 1814 1815 instance->fw_fault_work_q = 1816 create_singlethread_workqueue(instance->fault_handler_work_q_name); 1817 if (!instance->fw_fault_work_q) { 1818 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 1819 __func__, __LINE__); 1820 return FAILED; 1821 } 1822 1823 queue_delayed_work(instance->fw_fault_work_q, 1824 &instance->fw_fault_work, 1825 msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL)); 1826 1827 return SUCCESS; 1828 } 1829 1830 void 1831 megasas_fusion_stop_watchdog(struct megasas_instance *instance) 1832 { 1833 struct workqueue_struct *wq; 1834 1835 if (instance->fw_fault_work_q) { 1836 wq = instance->fw_fault_work_q; 1837 instance->fw_fault_work_q = NULL; 1838 if (!cancel_delayed_work_sync(&instance->fw_fault_work)) 1839 flush_workqueue(wq); 1840 destroy_workqueue(wq); 1841 } 1842 } 1843 1844 /** 1845 * map_cmd_status - Maps FW cmd status to OS cmd status 1846 * @cmd : Pointer to cmd 1847 * @status : status of cmd returned by FW 1848 * @ext_status : ext status of cmd returned by FW 1849 */ 1850 1851 void 1852 map_cmd_status(struct fusion_context *fusion, 1853 struct scsi_cmnd *scmd, u8 status, u8 ext_status, 1854 u32 data_length, u8 *sense) 1855 { 1856 u8 cmd_type; 1857 int resid; 1858 1859 cmd_type = megasas_cmd_type(scmd); 1860 switch (status) { 1861 1862 case MFI_STAT_OK: 1863 scmd->result = DID_OK << 16; 1864 break; 1865 1866 case MFI_STAT_SCSI_IO_FAILED: 1867 case MFI_STAT_LD_INIT_IN_PROGRESS: 1868 scmd->result = (DID_ERROR << 16) | ext_status; 1869 break; 1870 1871 case MFI_STAT_SCSI_DONE_WITH_ERROR: 1872 1873 scmd->result = (DID_OK << 16) | ext_status; 1874 if (ext_status == SAM_STAT_CHECK_CONDITION) { 1875 memset(scmd->sense_buffer, 0, 1876 SCSI_SENSE_BUFFERSIZE); 1877 memcpy(scmd->sense_buffer, sense, 1878 SCSI_SENSE_BUFFERSIZE); 1879 scmd->result |= DRIVER_SENSE << 24; 1880 } 1881 1882 /* 1883 * If the IO request is partially completed, then MR FW will 1884 * update "io_request->DataLength" field with actual number of 1885 * bytes transferred.Driver will set residual bytes count in 1886 * SCSI command structure. 1887 */ 1888 resid = (scsi_bufflen(scmd) - data_length); 1889 scsi_set_resid(scmd, resid); 1890 1891 if (resid && 1892 ((cmd_type == READ_WRITE_LDIO) || 1893 (cmd_type == READ_WRITE_SYSPDIO))) 1894 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" 1895 " requested/completed 0x%x/0x%x\n", 1896 status, scsi_bufflen(scmd), data_length); 1897 break; 1898 1899 case MFI_STAT_LD_OFFLINE: 1900 case MFI_STAT_DEVICE_NOT_FOUND: 1901 scmd->result = DID_BAD_TARGET << 16; 1902 break; 1903 case MFI_STAT_CONFIG_SEQ_MISMATCH: 1904 scmd->result = DID_IMM_RETRY << 16; 1905 break; 1906 default: 1907 scmd->result = DID_ERROR << 16; 1908 break; 1909 } 1910 } 1911 1912 /** 1913 * megasas_is_prp_possible - 1914 * Checks if native NVMe PRPs can be built for the IO 1915 * 1916 * @instance: Adapter soft state 1917 * @scmd: SCSI command from the mid-layer 1918 * @sge_count: scatter gather element count. 1919 * 1920 * Returns: true: PRPs can be built 1921 * false: IEEE SGLs needs to be built 1922 */ 1923 static bool 1924 megasas_is_prp_possible(struct megasas_instance *instance, 1925 struct scsi_cmnd *scmd, int sge_count) 1926 { 1927 struct fusion_context *fusion; 1928 int i; 1929 u32 data_length = 0; 1930 struct scatterlist *sg_scmd; 1931 bool build_prp = false; 1932 u32 mr_nvme_pg_size; 1933 1934 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1935 MR_DEFAULT_NVME_PAGE_SIZE); 1936 fusion = instance->ctrl_context; 1937 data_length = scsi_bufflen(scmd); 1938 sg_scmd = scsi_sglist(scmd); 1939 1940 /* 1941 * NVMe uses one PRP for each page (or part of a page) 1942 * look at the data length - if 4 pages or less then IEEE is OK 1943 * if > 5 pages then we need to build a native SGL 1944 * if > 4 and <= 5 pages, then check physical address of 1st SG entry 1945 * if this first size in the page is >= the residual beyond 4 pages 1946 * then use IEEE, otherwise use native SGL 1947 */ 1948 1949 if (data_length > (mr_nvme_pg_size * 5)) { 1950 build_prp = true; 1951 } else if ((data_length > (mr_nvme_pg_size * 4)) && 1952 (data_length <= (mr_nvme_pg_size * 5))) { 1953 /* check if 1st SG entry size is < residual beyond 4 pages */ 1954 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) 1955 build_prp = true; 1956 } 1957 1958 /* 1959 * Below code detects gaps/holes in IO data buffers. 1960 * What does holes/gaps mean? 1961 * Any SGE except first one in a SGL starts at non NVME page size 1962 * aligned address OR Any SGE except last one in a SGL ends at 1963 * non NVME page size boundary. 1964 * 1965 * Driver has already informed block layer by setting boundary rules for 1966 * bio merging done at NVME page size boundary calling kernel API 1967 * blk_queue_virt_boundary inside slave_config. 1968 * Still there is possibility of IO coming with holes to driver because of 1969 * IO merging done by IO scheduler. 1970 * 1971 * With SCSI BLK MQ enabled, there will be no IO with holes as there is no 1972 * IO scheduling so no IO merging. 1973 * 1974 * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and 1975 * then sending IOs with holes. 1976 * 1977 * Though driver can request block layer to disable IO merging by calling- 1978 * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but 1979 * user may tune sysfs parameter- nomerges again to 0 or 1. 1980 * 1981 * If in future IO scheduling is enabled with SCSI BLK MQ, 1982 * this algorithm to detect holes will be required in driver 1983 * for SCSI BLK MQ enabled case as well. 1984 * 1985 * 1986 */ 1987 scsi_for_each_sg(scmd, sg_scmd, sge_count, i) { 1988 if ((i != 0) && (i != (sge_count - 1))) { 1989 if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) || 1990 mega_mod64(sg_dma_address(sg_scmd), 1991 mr_nvme_pg_size)) { 1992 build_prp = false; 1993 atomic_inc(&instance->sge_holes_type1); 1994 break; 1995 } 1996 } 1997 1998 if ((sge_count > 1) && (i == 0)) { 1999 if ((mega_mod64((sg_dma_address(sg_scmd) + 2000 sg_dma_len(sg_scmd)), 2001 mr_nvme_pg_size))) { 2002 build_prp = false; 2003 atomic_inc(&instance->sge_holes_type2); 2004 break; 2005 } 2006 } 2007 2008 if ((sge_count > 1) && (i == (sge_count - 1))) { 2009 if (mega_mod64(sg_dma_address(sg_scmd), 2010 mr_nvme_pg_size)) { 2011 build_prp = false; 2012 atomic_inc(&instance->sge_holes_type3); 2013 break; 2014 } 2015 } 2016 } 2017 2018 return build_prp; 2019 } 2020 2021 /** 2022 * megasas_make_prp_nvme - 2023 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only 2024 * 2025 * @instance: Adapter soft state 2026 * @scmd: SCSI command from the mid-layer 2027 * @sgl_ptr: SGL to be filled in 2028 * @cmd: Fusion command frame 2029 * @sge_count: scatter gather element count. 2030 * 2031 * Returns: true: PRPs are built 2032 * false: IEEE SGLs needs to be built 2033 */ 2034 static bool 2035 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, 2036 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2037 struct megasas_cmd_fusion *cmd, int sge_count) 2038 { 2039 int sge_len, offset, num_prp_in_chain = 0; 2040 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; 2041 u64 *ptr_sgl; 2042 dma_addr_t ptr_sgl_phys; 2043 u64 sge_addr; 2044 u32 page_mask, page_mask_result; 2045 struct scatterlist *sg_scmd; 2046 u32 first_prp_len; 2047 bool build_prp = false; 2048 int data_len = scsi_bufflen(scmd); 2049 struct fusion_context *fusion; 2050 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 2051 MR_DEFAULT_NVME_PAGE_SIZE); 2052 2053 fusion = instance->ctrl_context; 2054 2055 build_prp = megasas_is_prp_possible(instance, scmd, sge_count); 2056 2057 if (!build_prp) 2058 return false; 2059 2060 /* 2061 * Nvme has a very convoluted prp format. One prp is required 2062 * for each page or partial page. Driver need to split up OS sg_list 2063 * entries if it is longer than one page or cross a page 2064 * boundary. Driver also have to insert a PRP list pointer entry as 2065 * the last entry in each physical page of the PRP list. 2066 * 2067 * NOTE: The first PRP "entry" is actually placed in the first 2068 * SGL entry in the main message as IEEE 64 format. The 2nd 2069 * entry in the main message is the chain element, and the rest 2070 * of the PRP entries are built in the contiguous pcie buffer. 2071 */ 2072 page_mask = mr_nvme_pg_size - 1; 2073 ptr_sgl = (u64 *)cmd->sg_frame; 2074 ptr_sgl_phys = cmd->sg_frame_phys_addr; 2075 memset(ptr_sgl, 0, instance->max_chain_frame_sz); 2076 2077 /* Build chain frame element which holds all prps except first*/ 2078 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) 2079 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); 2080 2081 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); 2082 main_chain_element->NextChainOffset = 0; 2083 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2084 IEEE_SGE_FLAGS_SYSTEM_ADDR | 2085 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; 2086 2087 /* Build first prp, sge need not to be page aligned*/ 2088 ptr_first_sgl = sgl_ptr; 2089 sg_scmd = scsi_sglist(scmd); 2090 sge_addr = sg_dma_address(sg_scmd); 2091 sge_len = sg_dma_len(sg_scmd); 2092 2093 offset = (u32)(sge_addr & page_mask); 2094 first_prp_len = mr_nvme_pg_size - offset; 2095 2096 ptr_first_sgl->Address = cpu_to_le64(sge_addr); 2097 ptr_first_sgl->Length = cpu_to_le32(first_prp_len); 2098 2099 data_len -= first_prp_len; 2100 2101 if (sge_len > first_prp_len) { 2102 sge_addr += first_prp_len; 2103 sge_len -= first_prp_len; 2104 } else if (sge_len == first_prp_len) { 2105 sg_scmd = sg_next(sg_scmd); 2106 sge_addr = sg_dma_address(sg_scmd); 2107 sge_len = sg_dma_len(sg_scmd); 2108 } 2109 2110 for (;;) { 2111 offset = (u32)(sge_addr & page_mask); 2112 2113 /* Put PRP pointer due to page boundary*/ 2114 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; 2115 if (unlikely(!page_mask_result)) { 2116 scmd_printk(KERN_NOTICE, 2117 scmd, "page boundary ptr_sgl: 0x%p\n", 2118 ptr_sgl); 2119 ptr_sgl_phys += 8; 2120 *ptr_sgl = cpu_to_le64(ptr_sgl_phys); 2121 ptr_sgl++; 2122 num_prp_in_chain++; 2123 } 2124 2125 *ptr_sgl = cpu_to_le64(sge_addr); 2126 ptr_sgl++; 2127 ptr_sgl_phys += 8; 2128 num_prp_in_chain++; 2129 2130 sge_addr += mr_nvme_pg_size; 2131 sge_len -= mr_nvme_pg_size; 2132 data_len -= mr_nvme_pg_size; 2133 2134 if (data_len <= 0) 2135 break; 2136 2137 if (sge_len > 0) 2138 continue; 2139 2140 sg_scmd = sg_next(sg_scmd); 2141 sge_addr = sg_dma_address(sg_scmd); 2142 sge_len = sg_dma_len(sg_scmd); 2143 } 2144 2145 main_chain_element->Length = 2146 cpu_to_le32(num_prp_in_chain * sizeof(u64)); 2147 2148 atomic_inc(&instance->prp_sgl); 2149 return build_prp; 2150 } 2151 2152 /** 2153 * megasas_make_sgl_fusion - Prepares 32-bit SGL 2154 * @instance: Adapter soft state 2155 * @scp: SCSI command from the mid-layer 2156 * @sgl_ptr: SGL to be filled in 2157 * @cmd: cmd we are working on 2158 * @sge_count sge count 2159 * 2160 */ 2161 static void 2162 megasas_make_sgl_fusion(struct megasas_instance *instance, 2163 struct scsi_cmnd *scp, 2164 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2165 struct megasas_cmd_fusion *cmd, int sge_count) 2166 { 2167 int i, sg_processed; 2168 struct scatterlist *os_sgl; 2169 struct fusion_context *fusion; 2170 2171 fusion = instance->ctrl_context; 2172 2173 if (instance->adapter_type >= INVADER_SERIES) { 2174 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; 2175 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 2176 sgl_ptr_end->Flags = 0; 2177 } 2178 2179 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 2180 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); 2181 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); 2182 sgl_ptr->Flags = 0; 2183 if (instance->adapter_type >= INVADER_SERIES) 2184 if (i == sge_count - 1) 2185 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; 2186 sgl_ptr++; 2187 sg_processed = i + 1; 2188 2189 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && 2190 (sge_count > fusion->max_sge_in_main_msg)) { 2191 2192 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; 2193 if (instance->adapter_type >= INVADER_SERIES) { 2194 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2195 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != 2196 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) 2197 cmd->io_request->ChainOffset = 2198 fusion-> 2199 chain_offset_io_request; 2200 else 2201 cmd->io_request->ChainOffset = 0; 2202 } else 2203 cmd->io_request->ChainOffset = 2204 fusion->chain_offset_io_request; 2205 2206 sg_chain = sgl_ptr; 2207 /* Prepare chain element */ 2208 sg_chain->NextChainOffset = 0; 2209 if (instance->adapter_type >= INVADER_SERIES) 2210 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; 2211 else 2212 sg_chain->Flags = 2213 (IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2214 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); 2215 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); 2216 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); 2217 2218 sgl_ptr = 2219 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; 2220 memset(sgl_ptr, 0, instance->max_chain_frame_sz); 2221 } 2222 } 2223 atomic_inc(&instance->ieee_sgl); 2224 } 2225 2226 /** 2227 * megasas_make_sgl - Build Scatter Gather List(SGLs) 2228 * @scp: SCSI command pointer 2229 * @instance: Soft instance of controller 2230 * @cmd: Fusion command pointer 2231 * 2232 * This function will build sgls based on device type. 2233 * For nvme drives, there is different way of building sgls in nvme native 2234 * format- PRPs(Physical Region Page). 2235 * 2236 * Returns the number of sg lists actually used, zero if the sg lists 2237 * is NULL, or -ENOMEM if the mapping failed 2238 */ 2239 static 2240 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, 2241 struct megasas_cmd_fusion *cmd) 2242 { 2243 int sge_count; 2244 bool build_prp = false; 2245 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; 2246 2247 sge_count = scsi_dma_map(scp); 2248 2249 if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) 2250 return sge_count; 2251 2252 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; 2253 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2254 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && 2255 (cmd->pd_interface == NVME_PD)) 2256 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, 2257 cmd, sge_count); 2258 2259 if (!build_prp) 2260 megasas_make_sgl_fusion(instance, scp, sgl_chain64, 2261 cmd, sge_count); 2262 2263 return sge_count; 2264 } 2265 2266 /** 2267 * megasas_set_pd_lba - Sets PD LBA 2268 * @cdb: CDB 2269 * @cdb_len: cdb length 2270 * @start_blk: Start block of IO 2271 * 2272 * Used to set the PD LBA in CDB for FP IOs 2273 */ 2274 void 2275 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, 2276 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, 2277 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) 2278 { 2279 struct MR_LD_RAID *raid; 2280 u16 ld; 2281 u64 start_blk = io_info->pdBlock; 2282 u8 *cdb = io_request->CDB.CDB32; 2283 u32 num_blocks = io_info->numBlocks; 2284 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; 2285 2286 /* Check if T10 PI (DIF) is enabled for this LD */ 2287 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); 2288 raid = MR_LdRaidGet(ld, local_map_ptr); 2289 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { 2290 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2291 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; 2292 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; 2293 2294 if (scp->sc_data_direction == DMA_FROM_DEVICE) 2295 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; 2296 else 2297 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; 2298 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; 2299 2300 /* LBA */ 2301 cdb[12] = (u8)((start_blk >> 56) & 0xff); 2302 cdb[13] = (u8)((start_blk >> 48) & 0xff); 2303 cdb[14] = (u8)((start_blk >> 40) & 0xff); 2304 cdb[15] = (u8)((start_blk >> 32) & 0xff); 2305 cdb[16] = (u8)((start_blk >> 24) & 0xff); 2306 cdb[17] = (u8)((start_blk >> 16) & 0xff); 2307 cdb[18] = (u8)((start_blk >> 8) & 0xff); 2308 cdb[19] = (u8)(start_blk & 0xff); 2309 2310 /* Logical block reference tag */ 2311 io_request->CDB.EEDP32.PrimaryReferenceTag = 2312 cpu_to_be32(ref_tag); 2313 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); 2314 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ 2315 2316 /* Transfer length */ 2317 cdb[28] = (u8)((num_blocks >> 24) & 0xff); 2318 cdb[29] = (u8)((num_blocks >> 16) & 0xff); 2319 cdb[30] = (u8)((num_blocks >> 8) & 0xff); 2320 cdb[31] = (u8)(num_blocks & 0xff); 2321 2322 /* set SCSI IO EEDPFlags */ 2323 if (scp->sc_data_direction == DMA_FROM_DEVICE) { 2324 io_request->EEDPFlags = cpu_to_le16( 2325 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2326 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | 2327 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | 2328 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | 2329 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | 2330 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); 2331 } else { 2332 io_request->EEDPFlags = cpu_to_le16( 2333 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2334 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); 2335 } 2336 io_request->Control |= cpu_to_le32((0x4 << 26)); 2337 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); 2338 } else { 2339 /* Some drives don't support 16/12 byte CDB's, convert to 10 */ 2340 if (((cdb_len == 12) || (cdb_len == 16)) && 2341 (start_blk <= 0xffffffff)) { 2342 if (cdb_len == 16) { 2343 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; 2344 flagvals = cdb[1]; 2345 groupnum = cdb[14]; 2346 control = cdb[15]; 2347 } else { 2348 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; 2349 flagvals = cdb[1]; 2350 groupnum = cdb[10]; 2351 control = cdb[11]; 2352 } 2353 2354 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2355 2356 cdb[0] = opcode; 2357 cdb[1] = flagvals; 2358 cdb[6] = groupnum; 2359 cdb[9] = control; 2360 2361 /* Transfer length */ 2362 cdb[8] = (u8)(num_blocks & 0xff); 2363 cdb[7] = (u8)((num_blocks >> 8) & 0xff); 2364 2365 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ 2366 cdb_len = 10; 2367 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { 2368 /* Convert to 16 byte CDB for large LBA's */ 2369 switch (cdb_len) { 2370 case 6: 2371 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; 2372 control = cdb[5]; 2373 break; 2374 case 10: 2375 opcode = 2376 cdb[0] == READ_10 ? READ_16 : WRITE_16; 2377 flagvals = cdb[1]; 2378 groupnum = cdb[6]; 2379 control = cdb[9]; 2380 break; 2381 case 12: 2382 opcode = 2383 cdb[0] == READ_12 ? READ_16 : WRITE_16; 2384 flagvals = cdb[1]; 2385 groupnum = cdb[10]; 2386 control = cdb[11]; 2387 break; 2388 } 2389 2390 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2391 2392 cdb[0] = opcode; 2393 cdb[1] = flagvals; 2394 cdb[14] = groupnum; 2395 cdb[15] = control; 2396 2397 /* Transfer length */ 2398 cdb[13] = (u8)(num_blocks & 0xff); 2399 cdb[12] = (u8)((num_blocks >> 8) & 0xff); 2400 cdb[11] = (u8)((num_blocks >> 16) & 0xff); 2401 cdb[10] = (u8)((num_blocks >> 24) & 0xff); 2402 2403 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ 2404 cdb_len = 16; 2405 } 2406 2407 /* Normal case, just load LBA here */ 2408 switch (cdb_len) { 2409 case 6: 2410 { 2411 u8 val = cdb[1] & 0xE0; 2412 cdb[3] = (u8)(start_blk & 0xff); 2413 cdb[2] = (u8)((start_blk >> 8) & 0xff); 2414 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); 2415 break; 2416 } 2417 case 10: 2418 cdb[5] = (u8)(start_blk & 0xff); 2419 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2420 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2421 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2422 break; 2423 case 12: 2424 cdb[5] = (u8)(start_blk & 0xff); 2425 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2426 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2427 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2428 break; 2429 case 16: 2430 cdb[9] = (u8)(start_blk & 0xff); 2431 cdb[8] = (u8)((start_blk >> 8) & 0xff); 2432 cdb[7] = (u8)((start_blk >> 16) & 0xff); 2433 cdb[6] = (u8)((start_blk >> 24) & 0xff); 2434 cdb[5] = (u8)((start_blk >> 32) & 0xff); 2435 cdb[4] = (u8)((start_blk >> 40) & 0xff); 2436 cdb[3] = (u8)((start_blk >> 48) & 0xff); 2437 cdb[2] = (u8)((start_blk >> 56) & 0xff); 2438 break; 2439 } 2440 } 2441 } 2442 2443 /** 2444 * megasas_stream_detect - stream detection on read and and write IOs 2445 * @instance: Adapter soft state 2446 * @cmd: Command to be prepared 2447 * @io_info: IO Request info 2448 * 2449 */ 2450 2451 /** stream detection on read and and write IOs */ 2452 static void megasas_stream_detect(struct megasas_instance *instance, 2453 struct megasas_cmd_fusion *cmd, 2454 struct IO_REQUEST_INFO *io_info) 2455 { 2456 struct fusion_context *fusion = instance->ctrl_context; 2457 u32 device_id = io_info->ldTgtId; 2458 struct LD_STREAM_DETECT *current_ld_sd 2459 = fusion->stream_detect_by_ld[device_id]; 2460 u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; 2461 u32 shifted_values, unshifted_values; 2462 u32 index_value_mask, shifted_values_mask; 2463 int i; 2464 bool is_read_ahead = false; 2465 struct STREAM_DETECT *current_sd; 2466 /* find possible stream */ 2467 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { 2468 stream_num = (*track_stream >> 2469 (i * BITS_PER_INDEX_STREAM)) & 2470 STREAM_MASK; 2471 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2472 /* if we found a stream, update the raid 2473 * context and also update the mruBitMap 2474 */ 2475 /* boundary condition */ 2476 if ((current_sd->next_seq_lba) && 2477 (io_info->ldStartBlock >= current_sd->next_seq_lba) && 2478 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && 2479 (current_sd->is_read == io_info->isRead)) { 2480 2481 if ((io_info->ldStartBlock != current_sd->next_seq_lba) && 2482 ((!io_info->isRead) || (!is_read_ahead))) 2483 /* 2484 * Once the API availible we need to change this. 2485 * At this point we are not allowing any gap 2486 */ 2487 continue; 2488 2489 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); 2490 current_sd->next_seq_lba = 2491 io_info->ldStartBlock + io_info->numBlocks; 2492 /* 2493 * update the mruBitMap LRU 2494 */ 2495 shifted_values_mask = 2496 (1 << i * BITS_PER_INDEX_STREAM) - 1; 2497 shifted_values = ((*track_stream & shifted_values_mask) 2498 << BITS_PER_INDEX_STREAM); 2499 index_value_mask = 2500 STREAM_MASK << i * BITS_PER_INDEX_STREAM; 2501 unshifted_values = 2502 *track_stream & ~(shifted_values_mask | 2503 index_value_mask); 2504 *track_stream = 2505 unshifted_values | shifted_values | stream_num; 2506 return; 2507 } 2508 } 2509 /* 2510 * if we did not find any stream, create a new one 2511 * from the least recently used 2512 */ 2513 stream_num = (*track_stream >> 2514 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & 2515 STREAM_MASK; 2516 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2517 current_sd->is_read = io_info->isRead; 2518 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; 2519 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); 2520 return; 2521 } 2522 2523 /** 2524 * megasas_set_raidflag_cpu_affinity - This function sets the cpu 2525 * affinity (cpu of the controller) and raid_flags in the raid context 2526 * based on IO type. 2527 * 2528 * @praid_context: IO RAID context 2529 * @raid: LD raid map 2530 * @fp_possible: Is fast path possible? 2531 * @is_read: Is read IO? 2532 * 2533 */ 2534 static void 2535 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context, 2536 struct MR_LD_RAID *raid, bool fp_possible, 2537 u8 is_read, u32 scsi_buff_len) 2538 { 2539 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2540 struct RAID_CONTEXT_G35 *rctx_g35; 2541 2542 rctx_g35 = &praid_context->raid_context_g35; 2543 if (fp_possible) { 2544 if (is_read) { 2545 if ((raid->cpuAffinity.pdRead.cpu0) && 2546 (raid->cpuAffinity.pdRead.cpu1)) 2547 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2548 else if (raid->cpuAffinity.pdRead.cpu1) 2549 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2550 } else { 2551 if ((raid->cpuAffinity.pdWrite.cpu0) && 2552 (raid->cpuAffinity.pdWrite.cpu1)) 2553 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2554 else if (raid->cpuAffinity.pdWrite.cpu1) 2555 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2556 /* Fast path cache by pass capable R0/R1 VD */ 2557 if ((raid->level <= 1) && 2558 (raid->capability.fp_cache_bypass_capable)) { 2559 rctx_g35->routing_flags |= 2560 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); 2561 rctx_g35->raid_flags = 2562 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS 2563 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2564 } 2565 } 2566 } else { 2567 if (is_read) { 2568 if ((raid->cpuAffinity.ldRead.cpu0) && 2569 (raid->cpuAffinity.ldRead.cpu1)) 2570 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2571 else if (raid->cpuAffinity.ldRead.cpu1) 2572 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2573 } else { 2574 if ((raid->cpuAffinity.ldWrite.cpu0) && 2575 (raid->cpuAffinity.ldWrite.cpu1)) 2576 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2577 else if (raid->cpuAffinity.ldWrite.cpu1) 2578 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2579 2580 if (is_stream_detected(rctx_g35) && 2581 ((raid->level == 5) || (raid->level == 6)) && 2582 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && 2583 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) 2584 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2585 } 2586 } 2587 2588 rctx_g35->routing_flags |= 2589 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2590 2591 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2592 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. 2593 * IO Subtype is not bitmap. 2594 */ 2595 if ((raid->level == 1) && (!is_read)) { 2596 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2597 praid_context->raid_context_g35.raid_flags = 2598 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2599 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2600 } 2601 } 2602 2603 /** 2604 * megasas_build_ldio_fusion - Prepares IOs to devices 2605 * @instance: Adapter soft state 2606 * @scp: SCSI command 2607 * @cmd: Command to be prepared 2608 * 2609 * Prepares the io_request and chain elements (sg_frame) for IO 2610 * The IO can be for PD (Fast Path) or LD 2611 */ 2612 void 2613 megasas_build_ldio_fusion(struct megasas_instance *instance, 2614 struct scsi_cmnd *scp, 2615 struct megasas_cmd_fusion *cmd) 2616 { 2617 bool fp_possible; 2618 u16 ld; 2619 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; 2620 u32 scsi_buff_len; 2621 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2622 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 2623 struct IO_REQUEST_INFO io_info; 2624 struct fusion_context *fusion; 2625 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2626 u8 *raidLUN; 2627 unsigned long spinlock_flags; 2628 struct MR_LD_RAID *raid = NULL; 2629 struct MR_PRIV_DEVICE *mrdev_priv; 2630 struct RAID_CONTEXT *rctx; 2631 struct RAID_CONTEXT_G35 *rctx_g35; 2632 2633 device_id = MEGASAS_DEV_INDEX(scp); 2634 2635 fusion = instance->ctrl_context; 2636 2637 io_request = cmd->io_request; 2638 rctx = &io_request->RaidContext.raid_context; 2639 rctx_g35 = &io_request->RaidContext.raid_context_g35; 2640 2641 rctx->virtual_disk_tgt_id = cpu_to_le16(device_id); 2642 rctx->status = 0; 2643 rctx->ex_status = 0; 2644 2645 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 2646 2647 start_lba_lo = 0; 2648 start_lba_hi = 0; 2649 fp_possible = false; 2650 2651 /* 2652 * 6-byte READ(0x08) or WRITE(0x0A) cdb 2653 */ 2654 if (scp->cmd_len == 6) { 2655 datalength = (u32) scp->cmnd[4]; 2656 start_lba_lo = ((u32) scp->cmnd[1] << 16) | 2657 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 2658 2659 start_lba_lo &= 0x1FFFFF; 2660 } 2661 2662 /* 2663 * 10-byte READ(0x28) or WRITE(0x2A) cdb 2664 */ 2665 else if (scp->cmd_len == 10) { 2666 datalength = (u32) scp->cmnd[8] | 2667 ((u32) scp->cmnd[7] << 8); 2668 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2669 ((u32) scp->cmnd[3] << 16) | 2670 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2671 } 2672 2673 /* 2674 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 2675 */ 2676 else if (scp->cmd_len == 12) { 2677 datalength = ((u32) scp->cmnd[6] << 24) | 2678 ((u32) scp->cmnd[7] << 16) | 2679 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2680 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2681 ((u32) scp->cmnd[3] << 16) | 2682 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2683 } 2684 2685 /* 2686 * 16-byte READ(0x88) or WRITE(0x8A) cdb 2687 */ 2688 else if (scp->cmd_len == 16) { 2689 datalength = ((u32) scp->cmnd[10] << 24) | 2690 ((u32) scp->cmnd[11] << 16) | 2691 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 2692 start_lba_lo = ((u32) scp->cmnd[6] << 24) | 2693 ((u32) scp->cmnd[7] << 16) | 2694 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2695 2696 start_lba_hi = ((u32) scp->cmnd[2] << 24) | 2697 ((u32) scp->cmnd[3] << 16) | 2698 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2699 } 2700 2701 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); 2702 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; 2703 io_info.numBlocks = datalength; 2704 io_info.ldTgtId = device_id; 2705 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2706 scsi_buff_len = scsi_bufflen(scp); 2707 io_request->DataLength = cpu_to_le32(scsi_buff_len); 2708 2709 if (scp->sc_data_direction == DMA_FROM_DEVICE) 2710 io_info.isRead = 1; 2711 2712 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2713 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2714 2715 if (ld < instance->fw_supported_vd_count) 2716 raid = MR_LdRaidGet(ld, local_map_ptr); 2717 2718 if (!raid || (!fusion->fast_path_io)) { 2719 rctx->reg_lock_flags = 0; 2720 fp_possible = false; 2721 } else { 2722 if (MR_BuildRaidContext(instance, &io_info, rctx, 2723 local_map_ptr, &raidLUN)) 2724 fp_possible = (io_info.fpOkForIo > 0) ? true : false; 2725 } 2726 2727 cmd->request_desc->SCSIIO.MSIxIndex = 2728 instance->reply_map[raw_smp_processor_id()]; 2729 2730 if (instance->adapter_type >= VENTURA_SERIES) { 2731 /* FP for Optimal raid level 1. 2732 * All large RAID-1 writes (> 32 KiB, both WT and WB modes) 2733 * are built by the driver as LD I/Os. 2734 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os 2735 * (there is never a reason to process these as buffered writes) 2736 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os 2737 * with the SLD bit asserted. 2738 */ 2739 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 2740 mrdev_priv = scp->device->hostdata; 2741 2742 if (atomic_inc_return(&instance->fw_outstanding) > 2743 (instance->host->can_queue)) { 2744 fp_possible = false; 2745 atomic_dec(&instance->fw_outstanding); 2746 } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || 2747 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) { 2748 fp_possible = false; 2749 atomic_dec(&instance->fw_outstanding); 2750 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2751 atomic_set(&mrdev_priv->r1_ldio_hint, 2752 instance->r1_ldio_hint_default); 2753 } 2754 } 2755 2756 if (!fp_possible || 2757 (io_info.isRead && io_info.ra_capable)) { 2758 spin_lock_irqsave(&instance->stream_lock, 2759 spinlock_flags); 2760 megasas_stream_detect(instance, cmd, &io_info); 2761 spin_unlock_irqrestore(&instance->stream_lock, 2762 spinlock_flags); 2763 /* In ventura if stream detected for a read and it is 2764 * read ahead capable make this IO as LDIO 2765 */ 2766 if (is_stream_detected(rctx_g35)) 2767 fp_possible = false; 2768 } 2769 2770 /* If raid is NULL, set CPU affinity to default CPU0 */ 2771 if (raid) 2772 megasas_set_raidflag_cpu_affinity(&io_request->RaidContext, 2773 raid, fp_possible, io_info.isRead, 2774 scsi_buff_len); 2775 else 2776 rctx_g35->routing_flags |= 2777 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2778 } 2779 2780 if (fp_possible) { 2781 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, 2782 local_map_ptr, start_lba_lo); 2783 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2784 cmd->request_desc->SCSIIO.RequestFlags = 2785 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO 2786 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2787 if (instance->adapter_type == INVADER_SERIES) { 2788 if (rctx->reg_lock_flags == REGION_TYPE_UNUSED) 2789 cmd->request_desc->SCSIIO.RequestFlags = 2790 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2791 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2792 rctx->type = MPI2_TYPE_CUDA; 2793 rctx->nseg = 0x1; 2794 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2795 rctx->reg_lock_flags |= 2796 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | 2797 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2798 } else if (instance->adapter_type >= VENTURA_SERIES) { 2799 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT); 2800 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2801 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2802 io_request->IoFlags |= 2803 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2804 } 2805 if (fusion->load_balance_info && 2806 (fusion->load_balance_info[device_id].loadBalanceFlag) && 2807 (io_info.isRead)) { 2808 io_info.devHandle = 2809 get_updated_dev_handle(instance, 2810 &fusion->load_balance_info[device_id], 2811 &io_info, local_map_ptr); 2812 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; 2813 cmd->pd_r1_lb = io_info.pd_after_lb; 2814 if (instance->adapter_type >= VENTURA_SERIES) 2815 rctx_g35->span_arm = io_info.span_arm; 2816 else 2817 rctx->span_arm = io_info.span_arm; 2818 2819 } else 2820 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 2821 2822 if (instance->adapter_type >= VENTURA_SERIES) 2823 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; 2824 else 2825 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2826 2827 if ((raidLUN[0] == 1) && 2828 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { 2829 instance->dev_handle = !(instance->dev_handle); 2830 io_info.devHandle = 2831 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; 2832 } 2833 2834 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; 2835 io_request->DevHandle = io_info.devHandle; 2836 cmd->pd_interface = io_info.pd_interface; 2837 /* populate the LUN field */ 2838 memcpy(io_request->LUN, raidLUN, 8); 2839 } else { 2840 rctx->timeout_value = 2841 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); 2842 cmd->request_desc->SCSIIO.RequestFlags = 2843 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 2844 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2845 if (instance->adapter_type == INVADER_SERIES) { 2846 if (io_info.do_fp_rlbypass || 2847 (rctx->reg_lock_flags == REGION_TYPE_UNUSED)) 2848 cmd->request_desc->SCSIIO.RequestFlags = 2849 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2850 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2851 rctx->type = MPI2_TYPE_CUDA; 2852 rctx->reg_lock_flags |= 2853 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | 2854 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2855 rctx->nseg = 0x1; 2856 } else if (instance->adapter_type >= VENTURA_SERIES) { 2857 rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2858 rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT); 2859 rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2860 } 2861 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2862 io_request->DevHandle = cpu_to_le16(device_id); 2863 2864 } /* Not FP */ 2865 } 2866 2867 /** 2868 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk 2869 * @instance: Adapter soft state 2870 * @scp: SCSI command 2871 * @cmd: Command to be prepared 2872 * 2873 * Prepares the io_request frame for non-rw io cmds for vd. 2874 */ 2875 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, 2876 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) 2877 { 2878 u32 device_id; 2879 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2880 u16 ld; 2881 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2882 struct fusion_context *fusion = instance->ctrl_context; 2883 u8 span, physArm; 2884 __le16 devHandle; 2885 u32 arRef, pd; 2886 struct MR_LD_RAID *raid; 2887 struct RAID_CONTEXT *pRAID_Context; 2888 u8 fp_possible = 1; 2889 2890 io_request = cmd->io_request; 2891 device_id = MEGASAS_DEV_INDEX(scmd); 2892 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2893 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2894 /* get RAID_Context pointer */ 2895 pRAID_Context = &io_request->RaidContext.raid_context; 2896 /* Check with FW team */ 2897 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2898 pRAID_Context->reg_lock_row_lba = 0; 2899 pRAID_Context->reg_lock_length = 0; 2900 2901 if (fusion->fast_path_io && ( 2902 device_id < instance->fw_supported_vd_count)) { 2903 2904 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2905 if (ld >= instance->fw_supported_vd_count - 1) 2906 fp_possible = 0; 2907 else { 2908 raid = MR_LdRaidGet(ld, local_map_ptr); 2909 if (!(raid->capability.fpNonRWCapable)) 2910 fp_possible = 0; 2911 } 2912 } else 2913 fp_possible = 0; 2914 2915 if (!fp_possible) { 2916 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2917 io_request->DevHandle = cpu_to_le16(device_id); 2918 io_request->LUN[1] = scmd->device->lun; 2919 pRAID_Context->timeout_value = 2920 cpu_to_le16 (scmd->request->timeout / HZ); 2921 cmd->request_desc->SCSIIO.RequestFlags = 2922 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2923 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2924 } else { 2925 2926 /* set RAID context values */ 2927 pRAID_Context->config_seq_num = raid->seqNum; 2928 if (instance->adapter_type < VENTURA_SERIES) 2929 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; 2930 pRAID_Context->timeout_value = 2931 cpu_to_le16(raid->fpIoTimeoutForLd); 2932 2933 /* get the DevHandle for the PD (since this is 2934 fpNonRWCapable, this is a single disk RAID0) */ 2935 span = physArm = 0; 2936 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); 2937 pd = MR_ArPdGet(arRef, physArm, local_map_ptr); 2938 devHandle = MR_PdDevHandleGet(pd, local_map_ptr); 2939 2940 /* build request descriptor */ 2941 cmd->request_desc->SCSIIO.RequestFlags = 2942 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 2943 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2944 cmd->request_desc->SCSIIO.DevHandle = devHandle; 2945 2946 /* populate the LUN field */ 2947 memcpy(io_request->LUN, raid->LUN, 8); 2948 2949 /* build the raidScsiIO structure */ 2950 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2951 io_request->DevHandle = devHandle; 2952 } 2953 } 2954 2955 /** 2956 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd 2957 * @instance: Adapter soft state 2958 * @scp: SCSI command 2959 * @cmd: Command to be prepared 2960 * @fp_possible: parameter to detect fast path or firmware path io. 2961 * 2962 * Prepares the io_request frame for rw/non-rw io cmds for syspds 2963 */ 2964 static void 2965 megasas_build_syspd_fusion(struct megasas_instance *instance, 2966 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, 2967 bool fp_possible) 2968 { 2969 u32 device_id; 2970 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2971 u16 pd_index = 0; 2972 u16 os_timeout_value; 2973 u16 timeout_limit; 2974 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2975 struct RAID_CONTEXT *pRAID_Context; 2976 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 2977 struct MR_PRIV_DEVICE *mr_device_priv_data; 2978 struct fusion_context *fusion = instance->ctrl_context; 2979 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; 2980 2981 device_id = MEGASAS_DEV_INDEX(scmd); 2982 pd_index = MEGASAS_PD_INDEX(scmd); 2983 os_timeout_value = scmd->request->timeout / HZ; 2984 mr_device_priv_data = scmd->device->hostdata; 2985 cmd->pd_interface = mr_device_priv_data->interface_type; 2986 2987 io_request = cmd->io_request; 2988 /* get RAID_Context pointer */ 2989 pRAID_Context = &io_request->RaidContext.raid_context; 2990 pRAID_Context->reg_lock_flags = 0; 2991 pRAID_Context->reg_lock_row_lba = 0; 2992 pRAID_Context->reg_lock_length = 0; 2993 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2994 io_request->LUN[1] = scmd->device->lun; 2995 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD 2996 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; 2997 2998 /* If FW supports PD sequence number */ 2999 if (instance->use_seqnum_jbod_fp && 3000 instance->pd_list[pd_index].driveType == TYPE_DISK) { 3001 /* TgtId must be incremented by 255 as jbod seq number is index 3002 * below raid map 3003 */ 3004 /* More than 256 PD/JBOD support for Ventura */ 3005 if (instance->support_morethan256jbod) 3006 pRAID_Context->virtual_disk_tgt_id = 3007 pd_sync->seq[pd_index].pd_target_id; 3008 else 3009 pRAID_Context->virtual_disk_tgt_id = 3010 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1)); 3011 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum; 3012 io_request->DevHandle = pd_sync->seq[pd_index].devHandle; 3013 if (instance->adapter_type >= VENTURA_SERIES) { 3014 io_request->RaidContext.raid_context_g35.routing_flags |= 3015 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 3016 io_request->RaidContext.raid_context_g35.nseg_type |= 3017 (1 << RAID_CONTEXT_NSEG_SHIFT); 3018 io_request->RaidContext.raid_context_g35.nseg_type |= 3019 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 3020 } else { 3021 pRAID_Context->type = MPI2_TYPE_CUDA; 3022 pRAID_Context->nseg = 0x1; 3023 pRAID_Context->reg_lock_flags |= 3024 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA); 3025 } 3026 } else if (fusion->fast_path_io) { 3027 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3028 pRAID_Context->config_seq_num = 0; 3029 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 3030 io_request->DevHandle = 3031 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; 3032 } else { 3033 /* Want to send all IO via FW path */ 3034 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3035 pRAID_Context->config_seq_num = 0; 3036 io_request->DevHandle = cpu_to_le16(0xFFFF); 3037 } 3038 3039 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; 3040 3041 cmd->request_desc->SCSIIO.MSIxIndex = 3042 instance->reply_map[raw_smp_processor_id()]; 3043 3044 if (!fp_possible) { 3045 /* system pd firmware path */ 3046 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 3047 cmd->request_desc->SCSIIO.RequestFlags = 3048 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3049 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3050 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); 3051 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3052 } else { 3053 if (os_timeout_value) 3054 os_timeout_value++; 3055 3056 /* system pd Fast Path */ 3057 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3058 timeout_limit = (scmd->device->type == TYPE_DISK) ? 3059 255 : 0xFFFF; 3060 pRAID_Context->timeout_value = 3061 cpu_to_le16((os_timeout_value > timeout_limit) ? 3062 timeout_limit : os_timeout_value); 3063 if (instance->adapter_type >= INVADER_SERIES) 3064 io_request->IoFlags |= 3065 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 3066 3067 cmd->request_desc->SCSIIO.RequestFlags = 3068 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3069 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3070 } 3071 } 3072 3073 /** 3074 * megasas_build_io_fusion - Prepares IOs to devices 3075 * @instance: Adapter soft state 3076 * @scp: SCSI command 3077 * @cmd: Command to be prepared 3078 * 3079 * Invokes helper functions to prepare request frames 3080 * and sets flags appropriate for IO/Non-IO cmd 3081 */ 3082 int 3083 megasas_build_io_fusion(struct megasas_instance *instance, 3084 struct scsi_cmnd *scp, 3085 struct megasas_cmd_fusion *cmd) 3086 { 3087 int sge_count; 3088 u8 cmd_type; 3089 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; 3090 struct MR_PRIV_DEVICE *mr_device_priv_data; 3091 mr_device_priv_data = scp->device->hostdata; 3092 3093 /* Zero out some fields so they don't get reused */ 3094 memset(io_request->LUN, 0x0, 8); 3095 io_request->CDB.EEDP32.PrimaryReferenceTag = 0; 3096 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; 3097 io_request->EEDPFlags = 0; 3098 io_request->Control = 0; 3099 io_request->EEDPBlockSize = 0; 3100 io_request->ChainOffset = 0; 3101 io_request->RaidContext.raid_context.raid_flags = 0; 3102 io_request->RaidContext.raid_context.type = 0; 3103 io_request->RaidContext.raid_context.nseg = 0; 3104 3105 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); 3106 /* 3107 * Just the CDB length,rest of the Flags are zero 3108 * This will be modified for FP in build_ldio_fusion 3109 */ 3110 io_request->IoFlags = cpu_to_le16(scp->cmd_len); 3111 3112 switch (cmd_type = megasas_cmd_type(scp)) { 3113 case READ_WRITE_LDIO: 3114 megasas_build_ldio_fusion(instance, scp, cmd); 3115 break; 3116 case NON_READ_WRITE_LDIO: 3117 megasas_build_ld_nonrw_fusion(instance, scp, cmd); 3118 break; 3119 case READ_WRITE_SYSPDIO: 3120 megasas_build_syspd_fusion(instance, scp, cmd, true); 3121 break; 3122 case NON_READ_WRITE_SYSPDIO: 3123 if (instance->secure_jbod_support || 3124 mr_device_priv_data->is_tm_capable) 3125 megasas_build_syspd_fusion(instance, scp, cmd, false); 3126 else 3127 megasas_build_syspd_fusion(instance, scp, cmd, true); 3128 break; 3129 default: 3130 break; 3131 } 3132 3133 /* 3134 * Construct SGL 3135 */ 3136 3137 sge_count = megasas_make_sgl(instance, scp, cmd); 3138 3139 if (sge_count > instance->max_num_sge || (sge_count < 0)) { 3140 dev_err(&instance->pdev->dev, 3141 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", 3142 __func__, __LINE__, sge_count, instance->max_num_sge); 3143 return 1; 3144 } 3145 3146 if (instance->adapter_type >= VENTURA_SERIES) { 3147 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); 3148 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); 3149 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); 3150 } else { 3151 /* numSGE store lower 8 bit of sge_count. 3152 * numSGEExt store higher 8 bit of sge_count 3153 */ 3154 io_request->RaidContext.raid_context.num_sge = sge_count; 3155 io_request->RaidContext.raid_context.num_sge_ext = 3156 (u8)(sge_count >> 8); 3157 } 3158 3159 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); 3160 3161 if (scp->sc_data_direction == DMA_TO_DEVICE) 3162 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); 3163 else if (scp->sc_data_direction == DMA_FROM_DEVICE) 3164 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); 3165 3166 io_request->SGLOffset0 = 3167 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; 3168 3169 io_request->SenseBufferLowAddress = 3170 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 3171 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 3172 3173 cmd->scmd = scp; 3174 scp->SCp.ptr = (char *)cmd; 3175 3176 return 0; 3177 } 3178 3179 static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3180 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) 3181 { 3182 u8 *p; 3183 struct fusion_context *fusion; 3184 3185 fusion = instance->ctrl_context; 3186 p = fusion->req_frames_desc + 3187 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; 3188 3189 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; 3190 } 3191 3192 3193 /* megasas_prepate_secondRaid1_IO 3194 * It prepares the raid 1 second IO 3195 */ 3196 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, 3197 struct megasas_cmd_fusion *cmd, 3198 struct megasas_cmd_fusion *r1_cmd) 3199 { 3200 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; 3201 struct fusion_context *fusion; 3202 fusion = instance->ctrl_context; 3203 req_desc = cmd->request_desc; 3204 /* copy the io request frame as well as 8 SGEs data for r1 command*/ 3205 memcpy(r1_cmd->io_request, cmd->io_request, 3206 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); 3207 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL, 3208 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); 3209 /*sense buffer is different for r1 command*/ 3210 r1_cmd->io_request->SenseBufferLowAddress = 3211 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr)); 3212 r1_cmd->scmd = cmd->scmd; 3213 req_desc2 = megasas_get_request_descriptor(instance, 3214 (r1_cmd->index - 1)); 3215 req_desc2->Words = 0; 3216 r1_cmd->request_desc = req_desc2; 3217 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); 3218 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; 3219 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; 3220 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; 3221 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; 3222 cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3223 cpu_to_le16(r1_cmd->index); 3224 r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3225 cpu_to_le16(cmd->index); 3226 /*MSIxIndex of both commands request descriptors should be same*/ 3227 r1_cmd->request_desc->SCSIIO.MSIxIndex = 3228 cmd->request_desc->SCSIIO.MSIxIndex; 3229 /*span arm is different for r1 cmd*/ 3230 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = 3231 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; 3232 } 3233 3234 /** 3235 * megasas_build_and_issue_cmd_fusion -Main routine for building and 3236 * issuing non IOCTL cmd 3237 * @instance: Adapter soft state 3238 * @scmd: pointer to scsi cmd from OS 3239 */ 3240 static u32 3241 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, 3242 struct scsi_cmnd *scmd) 3243 { 3244 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL; 3245 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3246 u32 index; 3247 struct fusion_context *fusion; 3248 3249 fusion = instance->ctrl_context; 3250 3251 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && 3252 instance->ldio_threshold && 3253 (atomic_inc_return(&instance->ldio_outstanding) > 3254 instance->ldio_threshold)) { 3255 atomic_dec(&instance->ldio_outstanding); 3256 return SCSI_MLQUEUE_DEVICE_BUSY; 3257 } 3258 3259 if (atomic_inc_return(&instance->fw_outstanding) > 3260 instance->host->can_queue) { 3261 atomic_dec(&instance->fw_outstanding); 3262 return SCSI_MLQUEUE_HOST_BUSY; 3263 } 3264 3265 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag); 3266 3267 if (!cmd) { 3268 atomic_dec(&instance->fw_outstanding); 3269 return SCSI_MLQUEUE_HOST_BUSY; 3270 } 3271 3272 index = cmd->index; 3273 3274 req_desc = megasas_get_request_descriptor(instance, index-1); 3275 3276 req_desc->Words = 0; 3277 cmd->request_desc = req_desc; 3278 3279 if (megasas_build_io_fusion(instance, scmd, cmd)) { 3280 megasas_return_cmd_fusion(instance, cmd); 3281 dev_err(&instance->pdev->dev, "Error building command\n"); 3282 cmd->request_desc = NULL; 3283 atomic_dec(&instance->fw_outstanding); 3284 return SCSI_MLQUEUE_HOST_BUSY; 3285 } 3286 3287 req_desc = cmd->request_desc; 3288 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3289 3290 if (cmd->io_request->ChainOffset != 0 && 3291 cmd->io_request->ChainOffset != 0xF) 3292 dev_err(&instance->pdev->dev, "The chain offset value is not " 3293 "correct : %x\n", cmd->io_request->ChainOffset); 3294 /* 3295 * if it is raid 1/10 fp write capable. 3296 * try to get second command from pool and construct it. 3297 * From FW, it has confirmed that lba values of two PDs 3298 * corresponds to single R1/10 LD are always same 3299 * 3300 */ 3301 /* driver side count always should be less than max_fw_cmds 3302 * to get new command 3303 */ 3304 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 3305 r1_cmd = megasas_get_cmd_fusion(instance, 3306 (scmd->request->tag + instance->max_fw_cmds)); 3307 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); 3308 } 3309 3310 3311 /* 3312 * Issue the command to the FW 3313 */ 3314 3315 megasas_fire_cmd_fusion(instance, req_desc); 3316 3317 if (r1_cmd) 3318 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); 3319 3320 3321 return 0; 3322 } 3323 3324 /** 3325 * megasas_complete_r1_command - 3326 * completes R1 FP write commands which has valid peer smid 3327 * @instance: Adapter soft state 3328 * @cmd_fusion: MPT command frame 3329 * 3330 */ 3331 static inline void 3332 megasas_complete_r1_command(struct megasas_instance *instance, 3333 struct megasas_cmd_fusion *cmd) 3334 { 3335 u8 *sense, status, ex_status; 3336 u32 data_length; 3337 u16 peer_smid; 3338 struct fusion_context *fusion; 3339 struct megasas_cmd_fusion *r1_cmd = NULL; 3340 struct scsi_cmnd *scmd_local = NULL; 3341 struct RAID_CONTEXT_G35 *rctx_g35; 3342 3343 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; 3344 fusion = instance->ctrl_context; 3345 peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid); 3346 3347 r1_cmd = fusion->cmd_list[peer_smid - 1]; 3348 scmd_local = cmd->scmd; 3349 status = rctx_g35->status; 3350 ex_status = rctx_g35->ex_status; 3351 data_length = cmd->io_request->DataLength; 3352 sense = cmd->sense; 3353 3354 cmd->cmd_completed = true; 3355 3356 /* Check if peer command is completed or not*/ 3357 if (r1_cmd->cmd_completed) { 3358 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; 3359 if (rctx_g35->status != MFI_STAT_OK) { 3360 status = rctx_g35->status; 3361 ex_status = rctx_g35->ex_status; 3362 data_length = r1_cmd->io_request->DataLength; 3363 sense = r1_cmd->sense; 3364 } 3365 3366 megasas_return_cmd_fusion(instance, r1_cmd); 3367 map_cmd_status(fusion, scmd_local, status, ex_status, 3368 le32_to_cpu(data_length), sense); 3369 if (instance->ldio_threshold && 3370 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 3371 atomic_dec(&instance->ldio_outstanding); 3372 scmd_local->SCp.ptr = NULL; 3373 megasas_return_cmd_fusion(instance, cmd); 3374 scsi_dma_unmap(scmd_local); 3375 scmd_local->scsi_done(scmd_local); 3376 } 3377 } 3378 3379 /** 3380 * complete_cmd_fusion - Completes command 3381 * @instance: Adapter soft state 3382 * Completes all commands that is in reply descriptor queue 3383 */ 3384 int 3385 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) 3386 { 3387 union MPI2_REPLY_DESCRIPTORS_UNION *desc; 3388 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; 3389 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 3390 struct fusion_context *fusion; 3391 struct megasas_cmd *cmd_mfi; 3392 struct megasas_cmd_fusion *cmd_fusion; 3393 u16 smid, num_completed; 3394 u8 reply_descript_type, *sense, status, extStatus; 3395 u32 device_id, data_length; 3396 union desc_value d_val; 3397 struct LD_LOAD_BALANCE_INFO *lbinfo; 3398 int threshold_reply_count = 0; 3399 struct scsi_cmnd *scmd_local = NULL; 3400 struct MR_TASK_MANAGE_REQUEST *mr_tm_req; 3401 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; 3402 3403 fusion = instance->ctrl_context; 3404 3405 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3406 return IRQ_HANDLED; 3407 3408 desc = fusion->reply_frames_desc[MSIxIndex] + 3409 fusion->last_reply_idx[MSIxIndex]; 3410 3411 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3412 3413 d_val.word = desc->Words; 3414 3415 reply_descript_type = reply_desc->ReplyFlags & 3416 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3417 3418 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3419 return IRQ_NONE; 3420 3421 num_completed = 0; 3422 3423 while (d_val.u.low != cpu_to_le32(UINT_MAX) && 3424 d_val.u.high != cpu_to_le32(UINT_MAX)) { 3425 3426 smid = le16_to_cpu(reply_desc->SMID); 3427 cmd_fusion = fusion->cmd_list[smid - 1]; 3428 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 3429 cmd_fusion->io_request; 3430 3431 scmd_local = cmd_fusion->scmd; 3432 status = scsi_io_req->RaidContext.raid_context.status; 3433 extStatus = scsi_io_req->RaidContext.raid_context.ex_status; 3434 sense = cmd_fusion->sense; 3435 data_length = scsi_io_req->DataLength; 3436 3437 switch (scsi_io_req->Function) { 3438 case MPI2_FUNCTION_SCSI_TASK_MGMT: 3439 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) 3440 cmd_fusion->io_request; 3441 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) 3442 &mr_tm_req->TmRequest; 3443 dev_dbg(&instance->pdev->dev, "TM completion:" 3444 "type: 0x%x TaskMID: 0x%x\n", 3445 mpi_tm_req->TaskType, mpi_tm_req->TaskMID); 3446 complete(&cmd_fusion->done); 3447 break; 3448 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ 3449 /* Update load balancing info */ 3450 if (fusion->load_balance_info && 3451 (cmd_fusion->scmd->SCp.Status & 3452 MEGASAS_LOAD_BALANCE_FLAG)) { 3453 device_id = MEGASAS_DEV_INDEX(scmd_local); 3454 lbinfo = &fusion->load_balance_info[device_id]; 3455 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); 3456 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 3457 } 3458 /* Fall through - and complete IO */ 3459 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ 3460 atomic_dec(&instance->fw_outstanding); 3461 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { 3462 map_cmd_status(fusion, scmd_local, status, 3463 extStatus, le32_to_cpu(data_length), 3464 sense); 3465 if (instance->ldio_threshold && 3466 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) 3467 atomic_dec(&instance->ldio_outstanding); 3468 scmd_local->SCp.ptr = NULL; 3469 megasas_return_cmd_fusion(instance, cmd_fusion); 3470 scsi_dma_unmap(scmd_local); 3471 scmd_local->scsi_done(scmd_local); 3472 } else /* Optimal VD - R1 FP command completion. */ 3473 megasas_complete_r1_command(instance, cmd_fusion); 3474 break; 3475 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ 3476 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3477 /* Poll mode. Dummy free. 3478 * In case of Interrupt mode, caller has reverse check. 3479 */ 3480 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 3481 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 3482 megasas_return_cmd(instance, cmd_mfi); 3483 } else 3484 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3485 break; 3486 } 3487 3488 fusion->last_reply_idx[MSIxIndex]++; 3489 if (fusion->last_reply_idx[MSIxIndex] >= 3490 fusion->reply_q_depth) 3491 fusion->last_reply_idx[MSIxIndex] = 0; 3492 3493 desc->Words = cpu_to_le64(ULLONG_MAX); 3494 num_completed++; 3495 threshold_reply_count++; 3496 3497 /* Get the next reply descriptor */ 3498 if (!fusion->last_reply_idx[MSIxIndex]) 3499 desc = fusion->reply_frames_desc[MSIxIndex]; 3500 else 3501 desc++; 3502 3503 reply_desc = 3504 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3505 3506 d_val.word = desc->Words; 3507 3508 reply_descript_type = reply_desc->ReplyFlags & 3509 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3510 3511 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3512 break; 3513 /* 3514 * Write to reply post host index register after completing threshold 3515 * number of reply counts and still there are more replies in reply queue 3516 * pending to be completed 3517 */ 3518 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) { 3519 if (instance->msix_combined) 3520 writel(((MSIxIndex & 0x7) << 24) | 3521 fusion->last_reply_idx[MSIxIndex], 3522 instance->reply_post_host_index_addr[MSIxIndex/8]); 3523 else 3524 writel((MSIxIndex << 24) | 3525 fusion->last_reply_idx[MSIxIndex], 3526 instance->reply_post_host_index_addr[0]); 3527 threshold_reply_count = 0; 3528 } 3529 } 3530 3531 if (!num_completed) 3532 return IRQ_NONE; 3533 3534 wmb(); 3535 if (instance->msix_combined) 3536 writel(((MSIxIndex & 0x7) << 24) | 3537 fusion->last_reply_idx[MSIxIndex], 3538 instance->reply_post_host_index_addr[MSIxIndex/8]); 3539 else 3540 writel((MSIxIndex << 24) | 3541 fusion->last_reply_idx[MSIxIndex], 3542 instance->reply_post_host_index_addr[0]); 3543 megasas_check_and_restore_queue_depth(instance); 3544 return IRQ_HANDLED; 3545 } 3546 3547 /** 3548 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter 3549 * @instance: Adapter soft state 3550 */ 3551 void megasas_sync_irqs(unsigned long instance_addr) 3552 { 3553 u32 count, i; 3554 struct megasas_instance *instance = 3555 (struct megasas_instance *)instance_addr; 3556 3557 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3558 3559 for (i = 0; i < count; i++) 3560 synchronize_irq(pci_irq_vector(instance->pdev, i)); 3561 } 3562 3563 /** 3564 * megasas_complete_cmd_dpc_fusion - Completes command 3565 * @instance: Adapter soft state 3566 * 3567 * Tasklet to complete cmds 3568 */ 3569 void 3570 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) 3571 { 3572 struct megasas_instance *instance = 3573 (struct megasas_instance *)instance_addr; 3574 u32 count, MSIxIndex; 3575 3576 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3577 3578 /* If we have already declared adapter dead, donot complete cmds */ 3579 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3580 return; 3581 3582 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) 3583 complete_cmd_fusion(instance, MSIxIndex); 3584 } 3585 3586 /** 3587 * megasas_isr_fusion - isr entry point 3588 */ 3589 irqreturn_t megasas_isr_fusion(int irq, void *devp) 3590 { 3591 struct megasas_irq_context *irq_context = devp; 3592 struct megasas_instance *instance = irq_context->instance; 3593 u32 mfiStatus; 3594 3595 if (instance->mask_interrupts) 3596 return IRQ_NONE; 3597 3598 if (!instance->msix_vectors) { 3599 mfiStatus = instance->instancet->clear_intr(instance); 3600 if (!mfiStatus) 3601 return IRQ_NONE; 3602 } 3603 3604 /* If we are resetting, bail */ 3605 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { 3606 instance->instancet->clear_intr(instance); 3607 return IRQ_HANDLED; 3608 } 3609 3610 return complete_cmd_fusion(instance, irq_context->MSIxIndex); 3611 } 3612 3613 /** 3614 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru 3615 * @instance: Adapter soft state 3616 * mfi_cmd: megasas_cmd pointer 3617 * 3618 */ 3619 void 3620 build_mpt_mfi_pass_thru(struct megasas_instance *instance, 3621 struct megasas_cmd *mfi_cmd) 3622 { 3623 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; 3624 struct MPI2_RAID_SCSI_IO_REQUEST *io_req; 3625 struct megasas_cmd_fusion *cmd; 3626 struct fusion_context *fusion; 3627 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; 3628 3629 fusion = instance->ctrl_context; 3630 3631 cmd = megasas_get_cmd_fusion(instance, 3632 instance->max_scsi_cmds + mfi_cmd->index); 3633 3634 /* Save the smid. To be used for returning the cmd */ 3635 mfi_cmd->context.smid = cmd->index; 3636 3637 /* 3638 * For cmds where the flag is set, store the flag and check 3639 * on completion. For cmds with this flag, don't call 3640 * megasas_complete_cmd 3641 */ 3642 3643 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) 3644 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; 3645 3646 io_req = cmd->io_request; 3647 3648 if (instance->adapter_type >= INVADER_SERIES) { 3649 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = 3650 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; 3651 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 3652 sgl_ptr_end->Flags = 0; 3653 } 3654 3655 mpi25_ieee_chain = 3656 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; 3657 3658 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; 3659 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, 3660 SGL) / 4; 3661 io_req->ChainOffset = fusion->chain_offset_mfi_pthru; 3662 3663 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); 3664 3665 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 3666 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; 3667 3668 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size); 3669 } 3670 3671 /** 3672 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd 3673 * @instance: Adapter soft state 3674 * @cmd: mfi cmd to build 3675 * 3676 */ 3677 union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3678 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 3679 { 3680 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; 3681 u16 index; 3682 3683 build_mpt_mfi_pass_thru(instance, cmd); 3684 index = cmd->context.smid; 3685 3686 req_desc = megasas_get_request_descriptor(instance, index - 1); 3687 3688 req_desc->Words = 0; 3689 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3690 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3691 3692 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3693 3694 return req_desc; 3695 } 3696 3697 /** 3698 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd 3699 * @instance: Adapter soft state 3700 * @cmd: mfi cmd pointer 3701 * 3702 */ 3703 void 3704 megasas_issue_dcmd_fusion(struct megasas_instance *instance, 3705 struct megasas_cmd *cmd) 3706 { 3707 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3708 3709 req_desc = build_mpt_cmd(instance, cmd); 3710 3711 megasas_fire_cmd_fusion(instance, req_desc); 3712 return; 3713 } 3714 3715 /** 3716 * megasas_release_fusion - Reverses the FW initialization 3717 * @instance: Adapter soft state 3718 */ 3719 void 3720 megasas_release_fusion(struct megasas_instance *instance) 3721 { 3722 megasas_free_ioc_init_cmd(instance); 3723 megasas_free_cmds(instance); 3724 megasas_free_cmds_fusion(instance); 3725 3726 iounmap(instance->reg_set); 3727 3728 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 3729 } 3730 3731 /** 3732 * megasas_read_fw_status_reg_fusion - returns the current FW status value 3733 * @regs: MFI register set 3734 */ 3735 static u32 3736 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance) 3737 { 3738 return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0); 3739 } 3740 3741 /** 3742 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3743 * @instance: Controller's soft instance 3744 * return: Number of allocated host crash buffers 3745 */ 3746 static void 3747 megasas_alloc_host_crash_buffer(struct megasas_instance *instance) 3748 { 3749 unsigned int i; 3750 3751 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { 3752 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); 3753 if (!instance->crash_buf[i]) { 3754 dev_info(&instance->pdev->dev, "Firmware crash dump " 3755 "memory allocation failed at index %d\n", i); 3756 break; 3757 } 3758 } 3759 instance->drv_buf_alloc = i; 3760 } 3761 3762 /** 3763 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3764 * @instance: Controller's soft instance 3765 */ 3766 void 3767 megasas_free_host_crash_buffer(struct megasas_instance *instance) 3768 { 3769 unsigned int i; 3770 for (i = 0; i < instance->drv_buf_alloc; i++) { 3771 if (instance->crash_buf[i]) 3772 vfree(instance->crash_buf[i]); 3773 } 3774 instance->drv_buf_index = 0; 3775 instance->drv_buf_alloc = 0; 3776 instance->fw_crash_state = UNAVAILABLE; 3777 instance->fw_crash_buffer_size = 0; 3778 } 3779 3780 /** 3781 * megasas_adp_reset_fusion - For controller reset 3782 * @regs: MFI register set 3783 */ 3784 static int 3785 megasas_adp_reset_fusion(struct megasas_instance *instance, 3786 struct megasas_register_set __iomem *regs) 3787 { 3788 u32 host_diag, abs_state, retry; 3789 3790 /* Now try to reset the chip */ 3791 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3792 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3793 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3794 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3795 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3796 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3797 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3798 3799 /* Check that the diag write enable (DRWE) bit is on */ 3800 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag); 3801 retry = 0; 3802 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { 3803 msleep(100); 3804 host_diag = megasas_readl(instance, 3805 &instance->reg_set->fusion_host_diag); 3806 if (retry++ == 100) { 3807 dev_warn(&instance->pdev->dev, 3808 "Host diag unlock failed from %s %d\n", 3809 __func__, __LINE__); 3810 break; 3811 } 3812 } 3813 if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) 3814 return -1; 3815 3816 /* Send chip reset command */ 3817 writel(host_diag | HOST_DIAG_RESET_ADAPTER, 3818 &instance->reg_set->fusion_host_diag); 3819 msleep(3000); 3820 3821 /* Make sure reset adapter bit is cleared */ 3822 host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag); 3823 retry = 0; 3824 while (host_diag & HOST_DIAG_RESET_ADAPTER) { 3825 msleep(100); 3826 host_diag = megasas_readl(instance, 3827 &instance->reg_set->fusion_host_diag); 3828 if (retry++ == 1000) { 3829 dev_warn(&instance->pdev->dev, 3830 "Diag reset adapter never cleared %s %d\n", 3831 __func__, __LINE__); 3832 break; 3833 } 3834 } 3835 if (host_diag & HOST_DIAG_RESET_ADAPTER) 3836 return -1; 3837 3838 abs_state = instance->instancet->read_fw_status_reg(instance) 3839 & MFI_STATE_MASK; 3840 retry = 0; 3841 3842 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { 3843 msleep(100); 3844 abs_state = instance->instancet-> 3845 read_fw_status_reg(instance) & MFI_STATE_MASK; 3846 } 3847 if (abs_state <= MFI_STATE_FW_INIT) { 3848 dev_warn(&instance->pdev->dev, 3849 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", 3850 abs_state, __func__, __LINE__); 3851 return -1; 3852 } 3853 3854 return 0; 3855 } 3856 3857 /** 3858 * megasas_check_reset_fusion - For controller reset check 3859 * @regs: MFI register set 3860 */ 3861 static int 3862 megasas_check_reset_fusion(struct megasas_instance *instance, 3863 struct megasas_register_set __iomem *regs) 3864 { 3865 return 0; 3866 } 3867 3868 /** 3869 * megasas_trigger_snap_dump - Trigger snap dump in FW 3870 * @instance: Soft instance of adapter 3871 */ 3872 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance) 3873 { 3874 int j; 3875 u32 fw_state; 3876 3877 if (!instance->disableOnlineCtrlReset) { 3878 dev_info(&instance->pdev->dev, "Trigger snap dump\n"); 3879 writel(MFI_ADP_TRIGGER_SNAP_DUMP, 3880 &instance->reg_set->doorbell); 3881 readl(&instance->reg_set->doorbell); 3882 } 3883 3884 for (j = 0; j < instance->snapdump_wait_time; j++) { 3885 fw_state = instance->instancet->read_fw_status_reg(instance) & 3886 MFI_STATE_MASK; 3887 if (fw_state == MFI_STATE_FAULT) { 3888 dev_err(&instance->pdev->dev, 3889 "Found FW in FAULT state, after snap dump trigger\n"); 3890 return; 3891 } 3892 msleep(1000); 3893 } 3894 } 3895 3896 /* This function waits for outstanding commands on fusion to complete */ 3897 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, 3898 int reason, int *convert) 3899 { 3900 int i, outstanding, retval = 0, hb_seconds_missed = 0; 3901 u32 fw_state; 3902 u32 waittime_for_io_completion; 3903 3904 waittime_for_io_completion = 3905 min_t(u32, resetwaittime, 3906 (resetwaittime - instance->snapdump_wait_time)); 3907 3908 if (reason == MFI_IO_TIMEOUT_OCR) { 3909 dev_info(&instance->pdev->dev, 3910 "MFI command is timed out\n"); 3911 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3912 if (instance->snapdump_wait_time) 3913 megasas_trigger_snap_dump(instance); 3914 retval = 1; 3915 goto out; 3916 } 3917 3918 for (i = 0; i < waittime_for_io_completion; i++) { 3919 /* Check if firmware is in fault state */ 3920 fw_state = instance->instancet->read_fw_status_reg(instance) & 3921 MFI_STATE_MASK; 3922 if (fw_state == MFI_STATE_FAULT) { 3923 dev_warn(&instance->pdev->dev, "Found FW in FAULT state," 3924 " will reset adapter scsi%d.\n", 3925 instance->host->host_no); 3926 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3927 if (instance->requestorId && reason) { 3928 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" 3929 " state while polling during" 3930 " I/O timeout handling for %d\n", 3931 instance->host->host_no); 3932 *convert = 1; 3933 } 3934 3935 retval = 1; 3936 goto out; 3937 } 3938 3939 3940 /* If SR-IOV VF mode & heartbeat timeout, don't wait */ 3941 if (instance->requestorId && !reason) { 3942 retval = 1; 3943 goto out; 3944 } 3945 3946 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ 3947 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) { 3948 if (instance->hb_host_mem->HB.fwCounter != 3949 instance->hb_host_mem->HB.driverCounter) { 3950 instance->hb_host_mem->HB.driverCounter = 3951 instance->hb_host_mem->HB.fwCounter; 3952 hb_seconds_missed = 0; 3953 } else { 3954 hb_seconds_missed++; 3955 if (hb_seconds_missed == 3956 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { 3957 dev_warn(&instance->pdev->dev, "SR-IOV:" 3958 " Heartbeat never completed " 3959 " while polling during I/O " 3960 " timeout handling for " 3961 "scsi%d.\n", 3962 instance->host->host_no); 3963 *convert = 1; 3964 retval = 1; 3965 goto out; 3966 } 3967 } 3968 } 3969 3970 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3971 outstanding = atomic_read(&instance->fw_outstanding); 3972 if (!outstanding) 3973 goto out; 3974 3975 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 3976 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 3977 "commands to complete for scsi%d\n", i, 3978 outstanding, instance->host->host_no); 3979 } 3980 msleep(1000); 3981 } 3982 3983 if (instance->snapdump_wait_time) { 3984 megasas_trigger_snap_dump(instance); 3985 retval = 1; 3986 goto out; 3987 } 3988 3989 if (atomic_read(&instance->fw_outstanding)) { 3990 dev_err(&instance->pdev->dev, "pending commands remain after waiting, " 3991 "will reset adapter scsi%d.\n", 3992 instance->host->host_no); 3993 *convert = 1; 3994 retval = 1; 3995 } 3996 3997 out: 3998 return retval; 3999 } 4000 4001 void megasas_reset_reply_desc(struct megasas_instance *instance) 4002 { 4003 int i, j, count; 4004 struct fusion_context *fusion; 4005 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 4006 4007 fusion = instance->ctrl_context; 4008 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 4009 for (i = 0 ; i < count ; i++) { 4010 fusion->last_reply_idx[i] = 0; 4011 reply_desc = fusion->reply_frames_desc[i]; 4012 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) 4013 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 4014 } 4015 } 4016 4017 /* 4018 * megasas_refire_mgmt_cmd : Re-fire management commands 4019 * @instance: Controller's soft instance 4020 */ 4021 void megasas_refire_mgmt_cmd(struct megasas_instance *instance) 4022 { 4023 int j; 4024 struct megasas_cmd_fusion *cmd_fusion; 4025 struct fusion_context *fusion; 4026 struct megasas_cmd *cmd_mfi; 4027 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4028 u16 smid; 4029 bool refire_cmd = 0; 4030 u8 result; 4031 u32 opcode = 0; 4032 4033 fusion = instance->ctrl_context; 4034 4035 /* Re-fire management commands. 4036 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. 4037 */ 4038 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { 4039 cmd_fusion = fusion->cmd_list[j]; 4040 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 4041 smid = le16_to_cpu(cmd_mfi->context.smid); 4042 result = REFIRE_CMD; 4043 4044 if (!smid) 4045 continue; 4046 4047 req_desc = megasas_get_request_descriptor(instance, smid - 1); 4048 4049 switch (cmd_mfi->frame->hdr.cmd) { 4050 case MFI_CMD_DCMD: 4051 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode); 4052 /* Do not refire shutdown command */ 4053 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 4054 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; 4055 result = COMPLETE_CMD; 4056 break; 4057 } 4058 4059 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) && 4060 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 4061 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); 4062 4063 if (!refire_cmd) 4064 result = RETURN_CMD; 4065 4066 break; 4067 case MFI_CMD_NVME: 4068 if (!instance->support_nvme_passthru) { 4069 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 4070 result = COMPLETE_CMD; 4071 } 4072 4073 break; 4074 default: 4075 break; 4076 } 4077 4078 switch (result) { 4079 case REFIRE_CMD: 4080 megasas_fire_cmd_fusion(instance, req_desc); 4081 break; 4082 case RETURN_CMD: 4083 megasas_return_cmd(instance, cmd_mfi); 4084 break; 4085 case COMPLETE_CMD: 4086 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 4087 break; 4088 } 4089 } 4090 } 4091 4092 /* 4093 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device 4094 * @instance: per adapter struct 4095 * @channel: the channel assigned by the OS 4096 * @id: the id assigned by the OS 4097 * 4098 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED 4099 */ 4100 4101 static int megasas_track_scsiio(struct megasas_instance *instance, 4102 int id, int channel) 4103 { 4104 int i, found = 0; 4105 struct megasas_cmd_fusion *cmd_fusion; 4106 struct fusion_context *fusion; 4107 fusion = instance->ctrl_context; 4108 4109 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4110 cmd_fusion = fusion->cmd_list[i]; 4111 if (cmd_fusion->scmd && 4112 (cmd_fusion->scmd->device->id == id && 4113 cmd_fusion->scmd->device->channel == channel)) { 4114 dev_info(&instance->pdev->dev, 4115 "SCSI commands pending to target" 4116 "channel %d id %d \tSMID: 0x%x\n", 4117 channel, id, cmd_fusion->index); 4118 scsi_print_command(cmd_fusion->scmd); 4119 found = 1; 4120 break; 4121 } 4122 } 4123 4124 return found ? FAILED : SUCCESS; 4125 } 4126 4127 /** 4128 * megasas_tm_response_code - translation of device response code 4129 * @ioc: per adapter object 4130 * @mpi_reply: MPI reply returned by firmware 4131 * 4132 * Return nothing. 4133 */ 4134 static void 4135 megasas_tm_response_code(struct megasas_instance *instance, 4136 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) 4137 { 4138 char *desc; 4139 4140 switch (mpi_reply->ResponseCode) { 4141 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: 4142 desc = "task management request completed"; 4143 break; 4144 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: 4145 desc = "invalid frame"; 4146 break; 4147 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: 4148 desc = "task management request not supported"; 4149 break; 4150 case MPI2_SCSITASKMGMT_RSP_TM_FAILED: 4151 desc = "task management request failed"; 4152 break; 4153 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: 4154 desc = "task management request succeeded"; 4155 break; 4156 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: 4157 desc = "invalid lun"; 4158 break; 4159 case 0xA: 4160 desc = "overlapped tag attempted"; 4161 break; 4162 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: 4163 desc = "task queued, however not sent to target"; 4164 break; 4165 default: 4166 desc = "unknown"; 4167 break; 4168 } 4169 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", 4170 mpi_reply->ResponseCode, desc); 4171 dev_dbg(&instance->pdev->dev, 4172 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" 4173 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", 4174 mpi_reply->TerminationCount, mpi_reply->DevHandle, 4175 mpi_reply->Function, mpi_reply->TaskType, 4176 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); 4177 } 4178 4179 /** 4180 * megasas_issue_tm - main routine for sending tm requests 4181 * @instance: per adapter struct 4182 * @device_handle: device handle 4183 * @channel: the channel assigned by the OS 4184 * @id: the id assigned by the OS 4185 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) 4186 * @smid_task: smid assigned to the task 4187 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF 4188 * Context: user 4189 * 4190 * MegaRaid use MPT interface for Task Magement request. 4191 * A generic API for sending task management requests to firmware. 4192 * 4193 * Return SUCCESS or FAILED. 4194 */ 4195 static int 4196 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, 4197 uint channel, uint id, u16 smid_task, u8 type, 4198 struct MR_PRIV_DEVICE *mr_device_priv_data) 4199 { 4200 struct MR_TASK_MANAGE_REQUEST *mr_request; 4201 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; 4202 unsigned long timeleft; 4203 struct megasas_cmd_fusion *cmd_fusion; 4204 struct megasas_cmd *cmd_mfi; 4205 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4206 struct fusion_context *fusion = NULL; 4207 struct megasas_cmd_fusion *scsi_lookup; 4208 int rc; 4209 int timeout = MEGASAS_DEFAULT_TM_TIMEOUT; 4210 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; 4211 4212 fusion = instance->ctrl_context; 4213 4214 cmd_mfi = megasas_get_cmd(instance); 4215 4216 if (!cmd_mfi) { 4217 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4218 __func__, __LINE__); 4219 return -ENOMEM; 4220 } 4221 4222 cmd_fusion = megasas_get_cmd_fusion(instance, 4223 instance->max_scsi_cmds + cmd_mfi->index); 4224 4225 /* Save the smid. To be used for returning the cmd */ 4226 cmd_mfi->context.smid = cmd_fusion->index; 4227 4228 req_desc = megasas_get_request_descriptor(instance, 4229 (cmd_fusion->index - 1)); 4230 4231 cmd_fusion->request_desc = req_desc; 4232 req_desc->Words = 0; 4233 4234 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; 4235 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); 4236 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; 4237 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 4238 mpi_request->DevHandle = cpu_to_le16(device_handle); 4239 mpi_request->TaskType = type; 4240 mpi_request->TaskMID = cpu_to_le16(smid_task); 4241 mpi_request->LUN[1] = 0; 4242 4243 4244 req_desc = cmd_fusion->request_desc; 4245 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); 4246 req_desc->HighPriority.RequestFlags = 4247 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << 4248 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 4249 req_desc->HighPriority.MSIxIndex = 0; 4250 req_desc->HighPriority.LMID = 0; 4251 req_desc->HighPriority.Reserved1 = 0; 4252 4253 if (channel < MEGASAS_MAX_PD_CHANNELS) 4254 mr_request->tmReqFlags.isTMForPD = 1; 4255 else 4256 mr_request->tmReqFlags.isTMForLD = 1; 4257 4258 init_completion(&cmd_fusion->done); 4259 megasas_fire_cmd_fusion(instance, req_desc); 4260 4261 switch (type) { 4262 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4263 timeout = mr_device_priv_data->task_abort_tmo; 4264 break; 4265 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4266 timeout = mr_device_priv_data->target_reset_tmo; 4267 break; 4268 } 4269 4270 timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ); 4271 4272 if (!timeleft) { 4273 dev_err(&instance->pdev->dev, 4274 "task mgmt type 0x%x timed out\n", type); 4275 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE; 4276 mutex_unlock(&instance->reset_mutex); 4277 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); 4278 mutex_lock(&instance->reset_mutex); 4279 return rc; 4280 } 4281 4282 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; 4283 megasas_tm_response_code(instance, mpi_reply); 4284 4285 megasas_return_cmd(instance, cmd_mfi); 4286 rc = SUCCESS; 4287 switch (type) { 4288 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4289 scsi_lookup = fusion->cmd_list[smid_task - 1]; 4290 4291 if (scsi_lookup->scmd == NULL) 4292 break; 4293 else { 4294 instance->instancet->disable_intr(instance); 4295 megasas_sync_irqs((unsigned long)instance); 4296 instance->instancet->enable_intr(instance); 4297 if (scsi_lookup->scmd == NULL) 4298 break; 4299 } 4300 rc = FAILED; 4301 break; 4302 4303 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4304 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) 4305 break; 4306 instance->instancet->disable_intr(instance); 4307 megasas_sync_irqs((unsigned long)instance); 4308 rc = megasas_track_scsiio(instance, id, channel); 4309 instance->instancet->enable_intr(instance); 4310 4311 break; 4312 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: 4313 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: 4314 break; 4315 default: 4316 rc = FAILED; 4317 break; 4318 } 4319 4320 return rc; 4321 4322 } 4323 4324 /* 4325 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI 4326 * @instance: per adapter struct 4327 * 4328 * Return Non Zero index, if SMID found in outstanding commands 4329 */ 4330 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) 4331 { 4332 int i, ret = 0; 4333 struct megasas_instance *instance; 4334 struct megasas_cmd_fusion *cmd_fusion; 4335 struct fusion_context *fusion; 4336 4337 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4338 4339 fusion = instance->ctrl_context; 4340 4341 for (i = 0; i < instance->max_scsi_cmds; i++) { 4342 cmd_fusion = fusion->cmd_list[i]; 4343 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { 4344 scmd_printk(KERN_NOTICE, scmd, "Abort request is for" 4345 " SMID: %d\n", cmd_fusion->index); 4346 ret = cmd_fusion->index; 4347 break; 4348 } 4349 } 4350 4351 return ret; 4352 } 4353 4354 /* 4355 * megasas_get_tm_devhandle - Get devhandle for TM request 4356 * @sdev- OS provided scsi device 4357 * 4358 * Returns- devhandle/targetID of SCSI device 4359 */ 4360 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) 4361 { 4362 u16 pd_index = 0; 4363 u32 device_id; 4364 struct megasas_instance *instance; 4365 struct fusion_context *fusion; 4366 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 4367 u16 devhandle = (u16)ULONG_MAX; 4368 4369 instance = (struct megasas_instance *)sdev->host->hostdata; 4370 fusion = instance->ctrl_context; 4371 4372 if (!MEGASAS_IS_LOGICAL(sdev)) { 4373 if (instance->use_seqnum_jbod_fp) { 4374 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) 4375 + sdev->id; 4376 pd_sync = (void *)fusion->pd_seq_sync 4377 [(instance->pd_seq_map_id - 1) & 1]; 4378 devhandle = pd_sync->seq[pd_index].devHandle; 4379 } else 4380 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" 4381 " without JBOD MAP support from %s %d\n", __func__, __LINE__); 4382 } else { 4383 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 4384 + sdev->id; 4385 devhandle = device_id; 4386 } 4387 4388 return devhandle; 4389 } 4390 4391 /* 4392 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters 4393 * @scmd : pointer to scsi command object 4394 * 4395 * Return SUCCESS, if command aborted else FAILED 4396 */ 4397 4398 int megasas_task_abort_fusion(struct scsi_cmnd *scmd) 4399 { 4400 struct megasas_instance *instance; 4401 u16 smid, devhandle; 4402 struct fusion_context *fusion; 4403 int ret; 4404 struct MR_PRIV_DEVICE *mr_device_priv_data; 4405 mr_device_priv_data = scmd->device->hostdata; 4406 4407 4408 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4409 fusion = instance->ctrl_context; 4410 4411 scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd); 4412 scsi_print_command(scmd); 4413 4414 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4415 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4416 "SCSI host:%d\n", instance->host->host_no); 4417 ret = FAILED; 4418 return ret; 4419 } 4420 4421 if (!mr_device_priv_data) { 4422 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4423 "scmd(%p)\n", scmd); 4424 scmd->result = DID_NO_CONNECT << 16; 4425 ret = SUCCESS; 4426 goto out; 4427 } 4428 4429 4430 if (!mr_device_priv_data->is_tm_capable) { 4431 ret = FAILED; 4432 goto out; 4433 } 4434 4435 mutex_lock(&instance->reset_mutex); 4436 4437 smid = megasas_fusion_smid_lookup(scmd); 4438 4439 if (!smid) { 4440 ret = SUCCESS; 4441 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" 4442 " issued is not found in oustanding commands\n"); 4443 mutex_unlock(&instance->reset_mutex); 4444 goto out; 4445 } 4446 4447 devhandle = megasas_get_tm_devhandle(scmd->device); 4448 4449 if (devhandle == (u16)ULONG_MAX) { 4450 ret = SUCCESS; 4451 sdev_printk(KERN_INFO, scmd->device, 4452 "task abort issued for invalid devhandle\n"); 4453 mutex_unlock(&instance->reset_mutex); 4454 goto out; 4455 } 4456 sdev_printk(KERN_INFO, scmd->device, 4457 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n", 4458 scmd, devhandle); 4459 4460 mr_device_priv_data->tm_busy = 1; 4461 ret = megasas_issue_tm(instance, devhandle, 4462 scmd->device->channel, scmd->device->id, smid, 4463 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK, 4464 mr_device_priv_data); 4465 mr_device_priv_data->tm_busy = 0; 4466 4467 mutex_unlock(&instance->reset_mutex); 4468 out: 4469 sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n", 4470 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 4471 4472 return ret; 4473 } 4474 4475 /* 4476 * megasas_reset_target_fusion : target reset function for fusion adapters 4477 * scmd: SCSI command pointer 4478 * 4479 * Returns SUCCESS if all commands associated with target aborted else FAILED 4480 */ 4481 4482 int megasas_reset_target_fusion(struct scsi_cmnd *scmd) 4483 { 4484 4485 struct megasas_instance *instance; 4486 int ret = FAILED; 4487 u16 devhandle; 4488 struct fusion_context *fusion; 4489 struct MR_PRIV_DEVICE *mr_device_priv_data; 4490 mr_device_priv_data = scmd->device->hostdata; 4491 4492 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4493 fusion = instance->ctrl_context; 4494 4495 sdev_printk(KERN_INFO, scmd->device, 4496 "target reset called for scmd(%p)\n", scmd); 4497 4498 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4499 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4500 "SCSI host:%d\n", instance->host->host_no); 4501 ret = FAILED; 4502 return ret; 4503 } 4504 4505 if (!mr_device_priv_data) { 4506 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4507 "scmd(%p)\n", scmd); 4508 scmd->result = DID_NO_CONNECT << 16; 4509 ret = SUCCESS; 4510 goto out; 4511 } 4512 4513 4514 if (!mr_device_priv_data->is_tm_capable) { 4515 ret = FAILED; 4516 goto out; 4517 } 4518 4519 mutex_lock(&instance->reset_mutex); 4520 devhandle = megasas_get_tm_devhandle(scmd->device); 4521 4522 if (devhandle == (u16)ULONG_MAX) { 4523 ret = SUCCESS; 4524 sdev_printk(KERN_INFO, scmd->device, 4525 "target reset issued for invalid devhandle\n"); 4526 mutex_unlock(&instance->reset_mutex); 4527 goto out; 4528 } 4529 4530 sdev_printk(KERN_INFO, scmd->device, 4531 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n", 4532 scmd, devhandle); 4533 mr_device_priv_data->tm_busy = 1; 4534 ret = megasas_issue_tm(instance, devhandle, 4535 scmd->device->channel, scmd->device->id, 0, 4536 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET, 4537 mr_device_priv_data); 4538 mr_device_priv_data->tm_busy = 0; 4539 mutex_unlock(&instance->reset_mutex); 4540 out: 4541 scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n", 4542 (ret == SUCCESS) ? "SUCCESS" : "FAILED"); 4543 4544 return ret; 4545 } 4546 4547 /*SRIOV get other instance in cluster if any*/ 4548 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) 4549 { 4550 int i; 4551 4552 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { 4553 if (megasas_mgmt_info.instance[i] && 4554 (megasas_mgmt_info.instance[i] != instance) && 4555 megasas_mgmt_info.instance[i]->requestorId && 4556 megasas_mgmt_info.instance[i]->peerIsPresent && 4557 (memcmp((megasas_mgmt_info.instance[i]->clusterId), 4558 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) 4559 return megasas_mgmt_info.instance[i]; 4560 } 4561 return NULL; 4562 } 4563 4564 /* Check for a second path that is currently UP */ 4565 int megasas_check_mpio_paths(struct megasas_instance *instance, 4566 struct scsi_cmnd *scmd) 4567 { 4568 struct megasas_instance *peer_instance = NULL; 4569 int retval = (DID_REQUEUE << 16); 4570 4571 if (instance->peerIsPresent) { 4572 peer_instance = megasas_get_peer_instance(instance); 4573 if ((peer_instance) && 4574 (atomic_read(&peer_instance->adprecovery) == 4575 MEGASAS_HBA_OPERATIONAL)) 4576 retval = (DID_NO_CONNECT << 16); 4577 } 4578 return retval; 4579 } 4580 4581 /* Core fusion reset function */ 4582 int megasas_reset_fusion(struct Scsi_Host *shost, int reason) 4583 { 4584 int retval = SUCCESS, i, j, convert = 0; 4585 struct megasas_instance *instance; 4586 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; 4587 struct fusion_context *fusion; 4588 u32 abs_state, status_reg, reset_adapter; 4589 u32 io_timeout_in_crash_mode = 0; 4590 struct scsi_cmnd *scmd_local = NULL; 4591 struct scsi_device *sdev; 4592 int ret_target_prop = DCMD_FAILED; 4593 bool is_target_prop = false; 4594 4595 instance = (struct megasas_instance *)shost->hostdata; 4596 fusion = instance->ctrl_context; 4597 4598 mutex_lock(&instance->reset_mutex); 4599 4600 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 4601 dev_warn(&instance->pdev->dev, "Hardware critical error, " 4602 "returning FAILED for scsi%d.\n", 4603 instance->host->host_no); 4604 mutex_unlock(&instance->reset_mutex); 4605 return FAILED; 4606 } 4607 status_reg = instance->instancet->read_fw_status_reg(instance); 4608 abs_state = status_reg & MFI_STATE_MASK; 4609 4610 /* IO timeout detected, forcibly put FW in FAULT state */ 4611 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && 4612 instance->crash_dump_app_support && reason) { 4613 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " 4614 "forcibly FAULT Firmware\n"); 4615 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4616 status_reg = megasas_readl(instance, &instance->reg_set->doorbell); 4617 writel(status_reg | MFI_STATE_FORCE_OCR, 4618 &instance->reg_set->doorbell); 4619 readl(&instance->reg_set->doorbell); 4620 mutex_unlock(&instance->reset_mutex); 4621 do { 4622 ssleep(3); 4623 io_timeout_in_crash_mode++; 4624 dev_dbg(&instance->pdev->dev, "waiting for [%d] " 4625 "seconds for crash dump collection and OCR " 4626 "to be done\n", (io_timeout_in_crash_mode * 3)); 4627 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 4628 (io_timeout_in_crash_mode < 80)); 4629 4630 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 4631 dev_info(&instance->pdev->dev, "OCR done for IO " 4632 "timeout case\n"); 4633 retval = SUCCESS; 4634 } else { 4635 dev_info(&instance->pdev->dev, "Controller is not " 4636 "operational after 240 seconds wait for IO " 4637 "timeout case in FW crash dump mode\n do " 4638 "OCR/kill adapter\n"); 4639 retval = megasas_reset_fusion(shost, 0); 4640 } 4641 return retval; 4642 } 4643 4644 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 4645 del_timer_sync(&instance->sriov_heartbeat_timer); 4646 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4647 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); 4648 instance->instancet->disable_intr(instance); 4649 megasas_sync_irqs((unsigned long)instance); 4650 4651 /* First try waiting for commands to complete */ 4652 if (megasas_wait_for_outstanding_fusion(instance, reason, 4653 &convert)) { 4654 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4655 dev_warn(&instance->pdev->dev, "resetting fusion " 4656 "adapter scsi%d.\n", instance->host->host_no); 4657 if (convert) 4658 reason = 0; 4659 4660 if (megasas_dbg_lvl & OCR_LOGS) 4661 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); 4662 4663 /* Now return commands back to the OS */ 4664 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4665 cmd_fusion = fusion->cmd_list[i]; 4666 /*check for extra commands issued by driver*/ 4667 if (instance->adapter_type >= VENTURA_SERIES) { 4668 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; 4669 megasas_return_cmd_fusion(instance, r1_cmd); 4670 } 4671 scmd_local = cmd_fusion->scmd; 4672 if (cmd_fusion->scmd) { 4673 if (megasas_dbg_lvl & OCR_LOGS) { 4674 sdev_printk(KERN_INFO, 4675 cmd_fusion->scmd->device, "SMID: 0x%x\n", 4676 cmd_fusion->index); 4677 scsi_print_command(cmd_fusion->scmd); 4678 } 4679 4680 scmd_local->result = 4681 megasas_check_mpio_paths(instance, 4682 scmd_local); 4683 if (instance->ldio_threshold && 4684 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 4685 atomic_dec(&instance->ldio_outstanding); 4686 megasas_return_cmd_fusion(instance, cmd_fusion); 4687 scsi_dma_unmap(scmd_local); 4688 scmd_local->scsi_done(scmd_local); 4689 } 4690 } 4691 4692 atomic_set(&instance->fw_outstanding, 0); 4693 4694 status_reg = instance->instancet->read_fw_status_reg(instance); 4695 abs_state = status_reg & MFI_STATE_MASK; 4696 reset_adapter = status_reg & MFI_RESET_ADAPTER; 4697 if (instance->disableOnlineCtrlReset || 4698 (abs_state == MFI_STATE_FAULT && !reset_adapter)) { 4699 /* Reset not supported, kill adapter */ 4700 dev_warn(&instance->pdev->dev, "Reset not supported" 4701 ", killing adapter scsi%d.\n", 4702 instance->host->host_no); 4703 megaraid_sas_kill_hba(instance); 4704 instance->skip_heartbeat_timer_del = 1; 4705 retval = FAILED; 4706 goto out; 4707 } 4708 4709 /* Let SR-IOV VF & PF sync up if there was a HB failure */ 4710 if (instance->requestorId && !reason) { 4711 msleep(MEGASAS_OCR_SETTLE_TIME_VF); 4712 goto transition_to_ready; 4713 } 4714 4715 /* Now try to reset the chip */ 4716 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { 4717 4718 if (instance->instancet->adp_reset 4719 (instance, instance->reg_set)) 4720 continue; 4721 transition_to_ready: 4722 /* Wait for FW to become ready */ 4723 if (megasas_transition_to_ready(instance, 1)) { 4724 dev_warn(&instance->pdev->dev, 4725 "Failed to transition controller to ready for " 4726 "scsi%d.\n", instance->host->host_no); 4727 if (instance->requestorId && !reason) 4728 goto fail_kill_adapter; 4729 else 4730 continue; 4731 } 4732 megasas_reset_reply_desc(instance); 4733 megasas_fusion_update_can_queue(instance, OCR_CONTEXT); 4734 4735 if (megasas_ioc_init_fusion(instance)) { 4736 if (instance->requestorId && !reason) 4737 goto fail_kill_adapter; 4738 else 4739 continue; 4740 } 4741 4742 if (megasas_get_ctrl_info(instance)) { 4743 dev_info(&instance->pdev->dev, 4744 "Failed from %s %d\n", 4745 __func__, __LINE__); 4746 megaraid_sas_kill_hba(instance); 4747 retval = FAILED; 4748 goto out; 4749 } 4750 4751 megasas_refire_mgmt_cmd(instance); 4752 4753 /* Reset load balance info */ 4754 if (fusion->load_balance_info) 4755 memset(fusion->load_balance_info, 0, 4756 (sizeof(struct LD_LOAD_BALANCE_INFO) * 4757 MAX_LOGICAL_DRIVES_EXT)); 4758 4759 if (!megasas_get_map_info(instance)) 4760 megasas_sync_map_info(instance); 4761 4762 megasas_setup_jbod_map(instance); 4763 4764 /* reset stream detection array */ 4765 if (instance->adapter_type >= VENTURA_SERIES) { 4766 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { 4767 memset(fusion->stream_detect_by_ld[j], 4768 0, sizeof(struct LD_STREAM_DETECT)); 4769 fusion->stream_detect_by_ld[j]->mru_bit_map 4770 = MR_STREAM_BITMAP; 4771 } 4772 } 4773 4774 clear_bit(MEGASAS_FUSION_IN_RESET, 4775 &instance->reset_flags); 4776 instance->instancet->enable_intr(instance); 4777 4778 shost_for_each_device(sdev, shost) { 4779 if ((instance->tgt_prop) && 4780 (instance->nvme_page_size)) 4781 ret_target_prop = megasas_get_target_prop(instance, sdev); 4782 4783 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false; 4784 megasas_set_dynamic_target_properties(sdev, is_target_prop); 4785 } 4786 4787 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4788 4789 dev_info(&instance->pdev->dev, "Interrupts are enabled and" 4790 " controller is OPERATIONAL for scsi:%d\n", 4791 instance->host->host_no); 4792 4793 /* Restart SR-IOV heartbeat */ 4794 if (instance->requestorId) { 4795 if (!megasas_sriov_start_heartbeat(instance, 0)) 4796 megasas_start_timer(instance); 4797 else 4798 instance->skip_heartbeat_timer_del = 1; 4799 } 4800 4801 if (instance->crash_dump_drv_support && 4802 instance->crash_dump_app_support) 4803 megasas_set_crash_dump_params(instance, 4804 MR_CRASH_BUF_TURN_ON); 4805 else 4806 megasas_set_crash_dump_params(instance, 4807 MR_CRASH_BUF_TURN_OFF); 4808 4809 if (instance->snapdump_wait_time) { 4810 megasas_get_snapdump_properties(instance); 4811 dev_info(&instance->pdev->dev, 4812 "Snap dump wait time\t: %d\n", 4813 instance->snapdump_wait_time); 4814 } 4815 4816 retval = SUCCESS; 4817 4818 /* Adapter reset completed successfully */ 4819 dev_warn(&instance->pdev->dev, 4820 "Reset successful for scsi%d.\n", 4821 instance->host->host_no); 4822 4823 goto out; 4824 } 4825 fail_kill_adapter: 4826 /* Reset failed, kill the adapter */ 4827 dev_warn(&instance->pdev->dev, "Reset failed, killing " 4828 "adapter scsi%d.\n", instance->host->host_no); 4829 megaraid_sas_kill_hba(instance); 4830 instance->skip_heartbeat_timer_del = 1; 4831 retval = FAILED; 4832 } else { 4833 /* For VF: Restart HB timer if we didn't OCR */ 4834 if (instance->requestorId) { 4835 megasas_start_timer(instance); 4836 } 4837 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4838 instance->instancet->enable_intr(instance); 4839 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4840 } 4841 out: 4842 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4843 mutex_unlock(&instance->reset_mutex); 4844 return retval; 4845 } 4846 4847 /* Fusion Crash dump collection */ 4848 void megasas_fusion_crash_dump(struct megasas_instance *instance) 4849 { 4850 u32 status_reg; 4851 u8 partial_copy = 0; 4852 int wait = 0; 4853 4854 4855 status_reg = instance->instancet->read_fw_status_reg(instance); 4856 4857 /* 4858 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer 4859 * to host crash buffers 4860 */ 4861 if (instance->drv_buf_index == 0) { 4862 /* Buffer is already allocated for old Crash dump. 4863 * Do OCR and do not wait for crash dump collection 4864 */ 4865 if (instance->drv_buf_alloc) { 4866 dev_info(&instance->pdev->dev, "earlier crash dump is " 4867 "not yet copied by application, ignoring this " 4868 "crash dump and initiating OCR\n"); 4869 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4870 writel(status_reg, 4871 &instance->reg_set->outbound_scratch_pad_0); 4872 readl(&instance->reg_set->outbound_scratch_pad_0); 4873 return; 4874 } 4875 megasas_alloc_host_crash_buffer(instance); 4876 dev_info(&instance->pdev->dev, "Number of host crash buffers " 4877 "allocated: %d\n", instance->drv_buf_alloc); 4878 } 4879 4880 while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) && 4881 (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) { 4882 if (!(status_reg & MFI_STATE_DMADONE)) { 4883 /* 4884 * Next crash dump buffer is not yet DMA'd by FW 4885 * Check after 10ms. Wait for 1 second for FW to 4886 * post the next buffer. If not bail out. 4887 */ 4888 wait++; 4889 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS); 4890 status_reg = instance->instancet->read_fw_status_reg( 4891 instance); 4892 continue; 4893 } 4894 4895 wait = 0; 4896 if (instance->drv_buf_index >= instance->drv_buf_alloc) { 4897 dev_info(&instance->pdev->dev, 4898 "Driver is done copying the buffer: %d\n", 4899 instance->drv_buf_alloc); 4900 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4901 partial_copy = 1; 4902 break; 4903 } else { 4904 memcpy(instance->crash_buf[instance->drv_buf_index], 4905 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); 4906 instance->drv_buf_index++; 4907 status_reg &= ~MFI_STATE_DMADONE; 4908 } 4909 4910 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0); 4911 readl(&instance->reg_set->outbound_scratch_pad_0); 4912 4913 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS); 4914 status_reg = instance->instancet->read_fw_status_reg(instance); 4915 } 4916 4917 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { 4918 dev_info(&instance->pdev->dev, "Crash Dump is available,number " 4919 "of copied buffers: %d\n", instance->drv_buf_index); 4920 instance->fw_crash_buffer_size = instance->drv_buf_index; 4921 instance->fw_crash_state = AVAILABLE; 4922 instance->drv_buf_index = 0; 4923 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0); 4924 readl(&instance->reg_set->outbound_scratch_pad_0); 4925 if (!partial_copy) 4926 megasas_reset_fusion(instance->host, 0); 4927 } 4928 } 4929 4930 4931 /* Fusion OCR work queue */ 4932 void megasas_fusion_ocr_wq(struct work_struct *work) 4933 { 4934 struct megasas_instance *instance = 4935 container_of(work, struct megasas_instance, work_init); 4936 4937 megasas_reset_fusion(instance->host, 0); 4938 } 4939 4940 /* Allocate fusion context */ 4941 int 4942 megasas_alloc_fusion_context(struct megasas_instance *instance) 4943 { 4944 struct fusion_context *fusion; 4945 4946 instance->ctrl_context = kzalloc(sizeof(struct fusion_context), 4947 GFP_KERNEL); 4948 if (!instance->ctrl_context) { 4949 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4950 __func__, __LINE__); 4951 return -ENOMEM; 4952 } 4953 4954 fusion = instance->ctrl_context; 4955 4956 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4957 sizeof(LD_SPAN_INFO)); 4958 fusion->log_to_span = 4959 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4960 fusion->log_to_span_pages); 4961 if (!fusion->log_to_span) { 4962 fusion->log_to_span = 4963 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 4964 sizeof(LD_SPAN_INFO))); 4965 if (!fusion->log_to_span) { 4966 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4967 __func__, __LINE__); 4968 return -ENOMEM; 4969 } 4970 } 4971 4972 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4973 sizeof(struct LD_LOAD_BALANCE_INFO)); 4974 fusion->load_balance_info = 4975 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4976 fusion->load_balance_info_pages); 4977 if (!fusion->load_balance_info) { 4978 fusion->load_balance_info = 4979 vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT, 4980 sizeof(struct LD_LOAD_BALANCE_INFO))); 4981 if (!fusion->load_balance_info) 4982 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " 4983 "continuing without Load Balance support\n"); 4984 } 4985 4986 return 0; 4987 } 4988 4989 void 4990 megasas_free_fusion_context(struct megasas_instance *instance) 4991 { 4992 struct fusion_context *fusion = instance->ctrl_context; 4993 4994 if (fusion) { 4995 if (fusion->load_balance_info) { 4996 if (is_vmalloc_addr(fusion->load_balance_info)) 4997 vfree(fusion->load_balance_info); 4998 else 4999 free_pages((ulong)fusion->load_balance_info, 5000 fusion->load_balance_info_pages); 5001 } 5002 5003 if (fusion->log_to_span) { 5004 if (is_vmalloc_addr(fusion->log_to_span)) 5005 vfree(fusion->log_to_span); 5006 else 5007 free_pages((ulong)fusion->log_to_span, 5008 fusion->log_to_span_pages); 5009 } 5010 5011 kfree(fusion); 5012 } 5013 } 5014 5015 struct megasas_instance_template megasas_instance_template_fusion = { 5016 .enable_intr = megasas_enable_intr_fusion, 5017 .disable_intr = megasas_disable_intr_fusion, 5018 .clear_intr = megasas_clear_intr_fusion, 5019 .read_fw_status_reg = megasas_read_fw_status_reg_fusion, 5020 .adp_reset = megasas_adp_reset_fusion, 5021 .check_reset = megasas_check_reset_fusion, 5022 .service_isr = megasas_isr_fusion, 5023 .tasklet = megasas_complete_cmd_dpc_fusion, 5024 .init_adapter = megasas_init_adapter_fusion, 5025 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, 5026 .issue_dcmd = megasas_issue_dcmd_fusion, 5027 }; 5028