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