1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2009-2013 LSI Corporation 5 * Copyright (c) 2013-2014 Avago Technologies 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 * 20 * FILE: megaraid_sas_fusion.c 21 * 22 * Authors: Avago Technologies 23 * Sumant Patro 24 * Adam Radford 25 * Kashyap Desai <kashyap.desai@avagotech.com> 26 * Sumit Saxena <sumit.saxena@avagotech.com> 27 * 28 * Send feedback to: megaraidlinux.pdl@avagotech.com 29 * 30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90, 31 * San Jose, California 95131 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/types.h> 36 #include <linux/pci.h> 37 #include <linux/list.h> 38 #include <linux/moduleparam.h> 39 #include <linux/module.h> 40 #include <linux/spinlock.h> 41 #include <linux/interrupt.h> 42 #include <linux/delay.h> 43 #include <linux/uio.h> 44 #include <linux/uaccess.h> 45 #include <linux/fs.h> 46 #include <linux/compat.h> 47 #include <linux/blkdev.h> 48 #include <linux/mutex.h> 49 #include <linux/poll.h> 50 #include <linux/vmalloc.h> 51 52 #include <scsi/scsi.h> 53 #include <scsi/scsi_cmnd.h> 54 #include <scsi/scsi_device.h> 55 #include <scsi/scsi_host.h> 56 #include <scsi/scsi_dbg.h> 57 #include <linux/dmi.h> 58 59 #include "megaraid_sas_fusion.h" 60 #include "megaraid_sas.h" 61 62 63 extern void megasas_free_cmds(struct megasas_instance *instance); 64 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance 65 *instance); 66 extern void 67 megasas_complete_cmd(struct megasas_instance *instance, 68 struct megasas_cmd *cmd, u8 alt_status); 69 int 70 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 71 int seconds); 72 73 void 74 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd); 75 int megasas_alloc_cmds(struct megasas_instance *instance); 76 int 77 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs); 78 int 79 megasas_issue_polled(struct megasas_instance *instance, 80 struct megasas_cmd *cmd); 81 void 82 megasas_check_and_restore_queue_depth(struct megasas_instance *instance); 83 84 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 85 void megaraid_sas_kill_hba(struct megasas_instance *instance); 86 87 extern u32 megasas_dbg_lvl; 88 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 89 int initial); 90 void megasas_start_timer(struct megasas_instance *instance); 91 extern struct megasas_mgmt_info megasas_mgmt_info; 92 extern unsigned int resetwaittime; 93 extern unsigned int dual_qdepth_disable; 94 static void megasas_free_rdpq_fusion(struct megasas_instance *instance); 95 static void megasas_free_reply_fusion(struct megasas_instance *instance); 96 static inline 97 void megasas_configure_queue_sizes(struct megasas_instance *instance); 98 99 /** 100 * megasas_check_same_4gb_region - check if allocation 101 * crosses same 4GB boundary or not 102 * @instance - adapter's soft instance 103 * start_addr - start address of DMA allocation 104 * size - size of allocation in bytes 105 * return - true : allocation does not cross same 106 * 4GB boundary 107 * false: allocation crosses same 108 * 4GB boundary 109 */ 110 static inline bool megasas_check_same_4gb_region 111 (struct megasas_instance *instance, dma_addr_t start_addr, size_t size) 112 { 113 dma_addr_t end_addr; 114 115 end_addr = start_addr + size; 116 117 if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) { 118 dev_err(&instance->pdev->dev, 119 "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n", 120 (unsigned long long)start_addr, 121 (unsigned long long)end_addr); 122 return false; 123 } 124 125 return true; 126 } 127 128 /** 129 * megasas_enable_intr_fusion - Enables interrupts 130 * @regs: MFI register set 131 */ 132 void 133 megasas_enable_intr_fusion(struct megasas_instance *instance) 134 { 135 struct megasas_register_set __iomem *regs; 136 regs = instance->reg_set; 137 138 instance->mask_interrupts = 0; 139 /* For Thunderbolt/Invader also clear intr on enable */ 140 writel(~0, ®s->outbound_intr_status); 141 readl(®s->outbound_intr_status); 142 143 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 144 145 /* Dummy readl to force pci flush */ 146 readl(®s->outbound_intr_mask); 147 } 148 149 /** 150 * megasas_disable_intr_fusion - Disables interrupt 151 * @regs: MFI register set 152 */ 153 void 154 megasas_disable_intr_fusion(struct megasas_instance *instance) 155 { 156 u32 mask = 0xFFFFFFFF; 157 u32 status; 158 struct megasas_register_set __iomem *regs; 159 regs = instance->reg_set; 160 instance->mask_interrupts = 1; 161 162 writel(mask, ®s->outbound_intr_mask); 163 /* Dummy readl to force pci flush */ 164 status = readl(®s->outbound_intr_mask); 165 } 166 167 int 168 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs) 169 { 170 u32 status; 171 /* 172 * Check if it is our interrupt 173 */ 174 status = readl(®s->outbound_intr_status); 175 176 if (status & 1) { 177 writel(status, ®s->outbound_intr_status); 178 readl(®s->outbound_intr_status); 179 return 1; 180 } 181 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) 182 return 0; 183 184 return 1; 185 } 186 187 /** 188 * megasas_get_cmd_fusion - Get a command from the free pool 189 * @instance: Adapter soft state 190 * 191 * Returns a blk_tag indexed mpt frame 192 */ 193 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance 194 *instance, u32 blk_tag) 195 { 196 struct fusion_context *fusion; 197 198 fusion = instance->ctrl_context; 199 return fusion->cmd_list[blk_tag]; 200 } 201 202 /** 203 * megasas_return_cmd_fusion - Return a cmd to free command pool 204 * @instance: Adapter soft state 205 * @cmd: Command packet to be returned to free command pool 206 */ 207 inline void megasas_return_cmd_fusion(struct megasas_instance *instance, 208 struct megasas_cmd_fusion *cmd) 209 { 210 cmd->scmd = NULL; 211 memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE); 212 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 213 cmd->cmd_completed = false; 214 } 215 216 /** 217 * megasas_fire_cmd_fusion - Sends command to the FW 218 * @instance: Adapter soft state 219 * @req_desc: 32bit or 64bit Request descriptor 220 * 221 * Perform PCI Write. Ventura supports 32 bit Descriptor. 222 * Prior to Ventura (12G) MR controller supports 64 bit Descriptor. 223 */ 224 225 static void 226 megasas_fire_cmd_fusion(struct megasas_instance *instance, 227 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc) 228 { 229 if (instance->adapter_type == VENTURA_SERIES) 230 writel(le32_to_cpu(req_desc->u.low), 231 &instance->reg_set->inbound_single_queue_port); 232 else { 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 /** 252 * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here 253 * @instance: Adapter soft state 254 * fw_boot_context: Whether this function called during probe or after OCR 255 * 256 * This function is only for fusion controllers. 257 * Update host can queue, if firmware downgrade max supported firmware commands. 258 * Firmware upgrade case will be skiped because underlying firmware has 259 * more resource than exposed to the OS. 260 * 261 */ 262 static void 263 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context) 264 { 265 u16 cur_max_fw_cmds = 0; 266 u16 ldio_threshold = 0; 267 struct megasas_register_set __iomem *reg_set; 268 269 reg_set = instance->reg_set; 270 271 /* ventura FW does not fill outbound_scratch_pad_3 with queue depth */ 272 if (instance->adapter_type < VENTURA_SERIES) 273 cur_max_fw_cmds = 274 readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF; 275 276 if (dual_qdepth_disable || !cur_max_fw_cmds) 277 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 278 else 279 ldio_threshold = 280 (instance->instancet->read_fw_status_reg(reg_set) & 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 kzalloc(sizeof(struct megasas_cmd_fusion *) * max_mpt_cmd, 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 = pci_alloc_consistent(instance->pdev, array_size, 694 &fusion->rdpq_phys); 695 if (!fusion->rdpq_virt) { 696 dev_err(&instance->pdev->dev, 697 "Failed from %s %d\n", __func__, __LINE__); 698 return -ENOMEM; 699 } 700 701 memset(fusion->rdpq_virt, 0, array_size); 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 if (fusion->reply_frames_desc_pool) 818 dma_pool_destroy(fusion->reply_frames_desc_pool); 819 if (fusion->reply_frames_desc_pool_align) 820 dma_pool_destroy(fusion->reply_frames_desc_pool_align); 821 822 if (fusion->rdpq_virt) 823 pci_free_consistent(instance->pdev, 824 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION, 825 fusion->rdpq_virt, fusion->rdpq_phys); 826 } 827 828 static void 829 megasas_free_reply_fusion(struct megasas_instance *instance) { 830 831 struct fusion_context *fusion; 832 833 fusion = instance->ctrl_context; 834 835 if (fusion->reply_frames_desc[0]) 836 dma_pool_free(fusion->reply_frames_desc_pool, 837 fusion->reply_frames_desc[0], 838 fusion->reply_frames_desc_phys[0]); 839 840 if (fusion->reply_frames_desc_pool) 841 dma_pool_destroy(fusion->reply_frames_desc_pool); 842 843 } 844 845 846 /** 847 * megasas_alloc_cmds_fusion - Allocates the command packets 848 * @instance: Adapter soft state 849 * 850 * 851 * Each frame has a 32-bit field called context. This context is used to get 852 * back the megasas_cmd_fusion from the frame when a frame gets completed 853 * In this driver, the 32 bit values are the indices into an array cmd_list. 854 * This array is used only to look up the megasas_cmd_fusion given the context. 855 * The free commands themselves are maintained in a linked list called cmd_pool. 856 * 857 * cmds are formed in the io_request and sg_frame members of the 858 * megasas_cmd_fusion. The context field is used to get a request descriptor 859 * and is used as SMID of the cmd. 860 * SMID value range is from 1 to max_fw_cmds. 861 */ 862 int 863 megasas_alloc_cmds_fusion(struct megasas_instance *instance) 864 { 865 int i; 866 struct fusion_context *fusion; 867 struct megasas_cmd_fusion *cmd; 868 u32 offset; 869 dma_addr_t io_req_base_phys; 870 u8 *io_req_base; 871 872 873 fusion = instance->ctrl_context; 874 875 if (megasas_alloc_request_fusion(instance)) 876 goto fail_exit; 877 878 if (instance->is_rdpq) { 879 if (megasas_alloc_rdpq_fusion(instance)) 880 goto fail_exit; 881 } else 882 if (megasas_alloc_reply_fusion(instance)) 883 goto fail_exit; 884 885 if (megasas_alloc_cmdlist_fusion(instance)) 886 goto fail_exit; 887 888 dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n", 889 instance->max_fw_cmds); 890 891 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */ 892 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 893 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 894 895 /* 896 * Add all the commands to command pool (fusion->cmd_pool) 897 */ 898 899 /* SMID 0 is reserved. Set SMID/index from 1 */ 900 for (i = 0; i < instance->max_mpt_cmds; i++) { 901 cmd = fusion->cmd_list[i]; 902 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; 903 memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); 904 cmd->index = i + 1; 905 cmd->scmd = NULL; 906 cmd->sync_cmd_idx = 907 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ? 908 (i - instance->max_scsi_cmds) : 909 (u32)ULONG_MAX; /* Set to Invalid */ 910 cmd->instance = instance; 911 cmd->io_request = 912 (struct MPI2_RAID_SCSI_IO_REQUEST *) 913 (io_req_base + offset); 914 memset(cmd->io_request, 0, 915 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); 916 cmd->io_request_phys_addr = io_req_base_phys + offset; 917 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 918 } 919 920 if (megasas_create_sg_sense_fusion(instance)) 921 goto fail_exit; 922 923 return 0; 924 925 fail_exit: 926 megasas_free_cmds_fusion(instance); 927 return -ENOMEM; 928 } 929 930 /** 931 * wait_and_poll - Issues a polling command 932 * @instance: Adapter soft state 933 * @cmd: Command packet to be issued 934 * 935 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 936 */ 937 int 938 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 939 int seconds) 940 { 941 int i; 942 struct megasas_header *frame_hdr = &cmd->frame->hdr; 943 struct fusion_context *fusion; 944 945 u32 msecs = seconds * 1000; 946 947 fusion = instance->ctrl_context; 948 /* 949 * Wait for cmd_status to change 950 */ 951 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { 952 rmb(); 953 msleep(20); 954 } 955 956 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS) 957 return DCMD_TIMEOUT; 958 else if (frame_hdr->cmd_status == MFI_STAT_OK) 959 return DCMD_SUCCESS; 960 else 961 return DCMD_FAILED; 962 } 963 964 /** 965 * megasas_ioc_init_fusion - Initializes the FW 966 * @instance: Adapter soft state 967 * 968 * Issues the IOC Init cmd 969 */ 970 int 971 megasas_ioc_init_fusion(struct megasas_instance *instance) 972 { 973 struct megasas_init_frame *init_frame; 974 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL; 975 dma_addr_t ioc_init_handle; 976 struct megasas_cmd *cmd; 977 u8 ret, cur_rdpq_mode; 978 struct fusion_context *fusion; 979 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc; 980 int i; 981 struct megasas_header *frame_hdr; 982 const char *sys_info; 983 MFI_CAPABILITIES *drv_ops; 984 u32 scratch_pad_2; 985 unsigned long flags; 986 ktime_t time; 987 bool cur_fw_64bit_dma_capable; 988 989 fusion = instance->ctrl_context; 990 991 ioc_init_handle = fusion->ioc_init_request_phys; 992 IOCInitMessage = fusion->ioc_init_request; 993 994 cmd = fusion->ioc_init_cmd; 995 996 scratch_pad_2 = readl 997 (&instance->reg_set->outbound_scratch_pad_2); 998 999 cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0; 1000 1001 if (instance->adapter_type == INVADER_SERIES) { 1002 cur_fw_64bit_dma_capable = 1003 (scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false; 1004 1005 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) { 1006 dev_err(&instance->pdev->dev, "Driver was operating on 64bit " 1007 "DMA mask, but upcoming FW does not support 64bit DMA mask\n"); 1008 megaraid_sas_kill_hba(instance); 1009 ret = 1; 1010 goto fail_fw_init; 1011 } 1012 } 1013 1014 if (instance->is_rdpq && !cur_rdpq_mode) { 1015 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*" 1016 " from RDPQ mode to non RDPQ mode\n"); 1017 ret = 1; 1018 goto fail_fw_init; 1019 } 1020 1021 instance->fw_sync_cache_support = (scratch_pad_2 & 1022 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0; 1023 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n", 1024 instance->fw_sync_cache_support ? "Yes" : "No"); 1025 1026 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); 1027 1028 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; 1029 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; 1030 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION); 1031 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); 1032 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4); 1033 1034 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth); 1035 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ? 1036 cpu_to_le64(fusion->rdpq_phys) : 1037 cpu_to_le64(fusion->reply_frames_desc_phys[0]); 1038 IOCInitMessage->MsgFlags = instance->is_rdpq ? 1039 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0; 1040 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); 1041 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr)); 1042 IOCInitMessage->HostMSIxVectors = instance->msix_vectors; 1043 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT; 1044 1045 time = ktime_get_real(); 1046 /* Convert to milliseconds as per FW requirement */ 1047 IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time)); 1048 1049 init_frame = (struct megasas_init_frame *)cmd->frame; 1050 memset(init_frame, 0, IOC_INIT_FRAME_SIZE); 1051 1052 frame_hdr = &cmd->frame->hdr; 1053 frame_hdr->cmd_status = 0xFF; 1054 frame_hdr->flags = cpu_to_le16( 1055 le16_to_cpu(frame_hdr->flags) | 1056 MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1057 1058 init_frame->cmd = MFI_CMD_INIT; 1059 init_frame->cmd_status = 0xFF; 1060 1061 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations); 1062 1063 /* driver support Extended MSIX */ 1064 if (instance->adapter_type >= INVADER_SERIES) 1065 drv_ops->mfi_capabilities.support_additional_msix = 1; 1066 /* driver supports HA / Remote LUN over Fast Path interface */ 1067 drv_ops->mfi_capabilities.support_fp_remote_lun = 1; 1068 1069 drv_ops->mfi_capabilities.support_max_255lds = 1; 1070 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1; 1071 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1; 1072 1073 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN) 1074 drv_ops->mfi_capabilities.support_ext_io_size = 1; 1075 1076 drv_ops->mfi_capabilities.support_fp_rlbypass = 1; 1077 if (!dual_qdepth_disable) 1078 drv_ops->mfi_capabilities.support_ext_queue_depth = 1; 1079 1080 drv_ops->mfi_capabilities.support_qd_throttling = 1; 1081 drv_ops->mfi_capabilities.support_pd_map_target_id = 1; 1082 drv_ops->mfi_capabilities.support_nvme_passthru = 1; 1083 1084 if (instance->consistent_mask_64bit) 1085 drv_ops->mfi_capabilities.support_64bit_mode = 1; 1086 1087 /* Convert capability to LE32 */ 1088 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); 1089 1090 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID); 1091 if (instance->system_info_buf && sys_info) { 1092 memcpy(instance->system_info_buf->systemId, sys_info, 1093 strlen(sys_info) > 64 ? 64 : strlen(sys_info)); 1094 instance->system_info_buf->systemIdLength = 1095 strlen(sys_info) > 64 ? 64 : strlen(sys_info); 1096 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h)); 1097 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h)); 1098 } 1099 1100 init_frame->queue_info_new_phys_addr_hi = 1101 cpu_to_le32(upper_32_bits(ioc_init_handle)); 1102 init_frame->queue_info_new_phys_addr_lo = 1103 cpu_to_le32(lower_32_bits(ioc_init_handle)); 1104 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); 1105 1106 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr)); 1107 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr)); 1108 req_desc.MFAIo.RequestFlags = 1109 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << 1110 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 1111 1112 /* 1113 * disable the intr before firing the init frame 1114 */ 1115 instance->instancet->disable_intr(instance); 1116 1117 for (i = 0; i < (10 * 1000); i += 20) { 1118 if (readl(&instance->reg_set->doorbell) & 1) 1119 msleep(20); 1120 else 1121 break; 1122 } 1123 1124 /* For Ventura also IOC INIT required 64 bit Descriptor write. */ 1125 spin_lock_irqsave(&instance->hba_lock, flags); 1126 writel(le32_to_cpu(req_desc.u.low), 1127 &instance->reg_set->inbound_low_queue_port); 1128 writel(le32_to_cpu(req_desc.u.high), 1129 &instance->reg_set->inbound_high_queue_port); 1130 mmiowb(); 1131 spin_unlock_irqrestore(&instance->hba_lock, flags); 1132 1133 wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS); 1134 1135 frame_hdr = &cmd->frame->hdr; 1136 if (frame_hdr->cmd_status != 0) { 1137 ret = 1; 1138 goto fail_fw_init; 1139 } 1140 1141 ret = 0; 1142 1143 fail_fw_init: 1144 dev_err(&instance->pdev->dev, 1145 "Init cmd return status %s for SCSI host %d\n", 1146 ret ? "FAILED" : "SUCCESS", instance->host->host_no); 1147 1148 return ret; 1149 } 1150 1151 /** 1152 * megasas_sync_pd_seq_num - JBOD SEQ MAP 1153 * @instance: Adapter soft state 1154 * @pend: set to 1, if it is pended jbod map. 1155 * 1156 * Issue Jbod map to the firmware. If it is pended command, 1157 * issue command and return. If it is first instance of jbod map 1158 * issue and receive command. 1159 */ 1160 int 1161 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { 1162 int ret = 0; 1163 u32 pd_seq_map_sz; 1164 struct megasas_cmd *cmd; 1165 struct megasas_dcmd_frame *dcmd; 1166 struct fusion_context *fusion = instance->ctrl_context; 1167 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1168 dma_addr_t pd_seq_h; 1169 1170 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; 1171 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; 1172 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 1173 (sizeof(struct MR_PD_CFG_SEQ) * 1174 (MAX_PHYSICAL_DEVICES - 1)); 1175 1176 cmd = megasas_get_cmd(instance); 1177 if (!cmd) { 1178 dev_err(&instance->pdev->dev, 1179 "Could not get mfi cmd. Fail from %s %d\n", 1180 __func__, __LINE__); 1181 return -ENOMEM; 1182 } 1183 1184 dcmd = &cmd->frame->dcmd; 1185 1186 memset(pd_sync, 0, pd_seq_map_sz); 1187 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1188 1189 if (pend) { 1190 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1191 dcmd->flags = MFI_FRAME_DIR_WRITE; 1192 instance->jbod_seq_cmd = cmd; 1193 } else { 1194 dcmd->flags = MFI_FRAME_DIR_READ; 1195 } 1196 1197 dcmd->cmd = MFI_CMD_DCMD; 1198 dcmd->cmd_status = 0xFF; 1199 dcmd->sge_count = 1; 1200 dcmd->timeout = 0; 1201 dcmd->pad_0 = 0; 1202 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz); 1203 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO); 1204 1205 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz); 1206 1207 if (pend) { 1208 instance->instancet->issue_dcmd(instance, cmd); 1209 return 0; 1210 } 1211 1212 /* Below code is only for non pended DCMD */ 1213 if (!instance->mask_interrupts) 1214 ret = megasas_issue_blocked_cmd(instance, cmd, 1215 MFI_IO_TIMEOUT_SECS); 1216 else 1217 ret = megasas_issue_polled(instance, cmd); 1218 1219 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) { 1220 dev_warn(&instance->pdev->dev, 1221 "driver supports max %d JBOD, but FW reports %d\n", 1222 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count)); 1223 ret = -EINVAL; 1224 } 1225 1226 if (ret == DCMD_TIMEOUT) 1227 megaraid_sas_kill_hba(instance); 1228 1229 if (ret == DCMD_SUCCESS) 1230 instance->pd_seq_map_id++; 1231 1232 megasas_return_cmd(instance, cmd); 1233 return ret; 1234 } 1235 1236 /* 1237 * megasas_get_ld_map_info - Returns FW's ld_map structure 1238 * @instance: Adapter soft state 1239 * @pend: Pend the command or not 1240 * Issues an internal command (DCMD) to get the FW's controller PD 1241 * list structure. This information is mainly used to find out SYSTEM 1242 * supported by the FW. 1243 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO 1244 * dcmd.mbox.b[0] - number of LDs being sync'd 1245 * dcmd.mbox.b[1] - 0 - complete command immediately. 1246 * - 1 - pend till config change 1247 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP 1248 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and 1249 * uses extended struct MR_FW_RAID_MAP_EXT 1250 */ 1251 static int 1252 megasas_get_ld_map_info(struct megasas_instance *instance) 1253 { 1254 int ret = 0; 1255 struct megasas_cmd *cmd; 1256 struct megasas_dcmd_frame *dcmd; 1257 void *ci; 1258 dma_addr_t ci_h = 0; 1259 u32 size_map_info; 1260 struct fusion_context *fusion; 1261 1262 cmd = megasas_get_cmd(instance); 1263 1264 if (!cmd) { 1265 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n"); 1266 return -ENOMEM; 1267 } 1268 1269 fusion = instance->ctrl_context; 1270 1271 if (!fusion) { 1272 megasas_return_cmd(instance, cmd); 1273 return -ENXIO; 1274 } 1275 1276 dcmd = &cmd->frame->dcmd; 1277 1278 size_map_info = fusion->current_map_sz; 1279 1280 ci = (void *) fusion->ld_map[(instance->map_id & 1)]; 1281 ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; 1282 1283 if (!ci) { 1284 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n"); 1285 megasas_return_cmd(instance, cmd); 1286 return -ENOMEM; 1287 } 1288 1289 memset(ci, 0, fusion->max_map_sz); 1290 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1291 dcmd->cmd = MFI_CMD_DCMD; 1292 dcmd->cmd_status = 0xFF; 1293 dcmd->sge_count = 1; 1294 dcmd->flags = MFI_FRAME_DIR_READ; 1295 dcmd->timeout = 0; 1296 dcmd->pad_0 = 0; 1297 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1298 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1299 1300 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1301 1302 if (!instance->mask_interrupts) 1303 ret = megasas_issue_blocked_cmd(instance, cmd, 1304 MFI_IO_TIMEOUT_SECS); 1305 else 1306 ret = megasas_issue_polled(instance, cmd); 1307 1308 if (ret == DCMD_TIMEOUT) 1309 megaraid_sas_kill_hba(instance); 1310 1311 megasas_return_cmd(instance, cmd); 1312 1313 return ret; 1314 } 1315 1316 u8 1317 megasas_get_map_info(struct megasas_instance *instance) 1318 { 1319 struct fusion_context *fusion = instance->ctrl_context; 1320 1321 fusion->fast_path_io = 0; 1322 if (!megasas_get_ld_map_info(instance)) { 1323 if (MR_ValidateMapInfo(instance, instance->map_id)) { 1324 fusion->fast_path_io = 1; 1325 return 0; 1326 } 1327 } 1328 return 1; 1329 } 1330 1331 /* 1332 * megasas_sync_map_info - Returns FW's ld_map structure 1333 * @instance: Adapter soft state 1334 * 1335 * Issues an internal command (DCMD) to get the FW's controller PD 1336 * list structure. This information is mainly used to find out SYSTEM 1337 * supported by the FW. 1338 */ 1339 int 1340 megasas_sync_map_info(struct megasas_instance *instance) 1341 { 1342 int i; 1343 struct megasas_cmd *cmd; 1344 struct megasas_dcmd_frame *dcmd; 1345 u16 num_lds; 1346 u32 size_sync_info; 1347 struct fusion_context *fusion; 1348 struct MR_LD_TARGET_SYNC *ci = NULL; 1349 struct MR_DRV_RAID_MAP_ALL *map; 1350 struct MR_LD_RAID *raid; 1351 struct MR_LD_TARGET_SYNC *ld_sync; 1352 dma_addr_t ci_h = 0; 1353 u32 size_map_info; 1354 1355 cmd = megasas_get_cmd(instance); 1356 1357 if (!cmd) { 1358 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n"); 1359 return -ENOMEM; 1360 } 1361 1362 fusion = instance->ctrl_context; 1363 1364 if (!fusion) { 1365 megasas_return_cmd(instance, cmd); 1366 return 1; 1367 } 1368 1369 map = fusion->ld_drv_map[instance->map_id & 1]; 1370 1371 num_lds = le16_to_cpu(map->raidMap.ldCount); 1372 1373 dcmd = &cmd->frame->dcmd; 1374 1375 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; 1376 1377 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1378 1379 ci = (struct MR_LD_TARGET_SYNC *) 1380 fusion->ld_map[(instance->map_id - 1) & 1]; 1381 memset(ci, 0, fusion->max_map_sz); 1382 1383 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; 1384 1385 ld_sync = (struct MR_LD_TARGET_SYNC *)ci; 1386 1387 for (i = 0; i < num_lds; i++, ld_sync++) { 1388 raid = MR_LdRaidGet(i, map); 1389 ld_sync->targetId = MR_GetLDTgtId(i, map); 1390 ld_sync->seqNum = raid->seqNum; 1391 } 1392 1393 size_map_info = fusion->current_map_sz; 1394 1395 dcmd->cmd = MFI_CMD_DCMD; 1396 dcmd->cmd_status = 0xFF; 1397 dcmd->sge_count = 1; 1398 dcmd->flags = MFI_FRAME_DIR_WRITE; 1399 dcmd->timeout = 0; 1400 dcmd->pad_0 = 0; 1401 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1402 dcmd->mbox.b[0] = num_lds; 1403 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1404 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1405 1406 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1407 1408 instance->map_update_cmd = cmd; 1409 1410 instance->instancet->issue_dcmd(instance, cmd); 1411 1412 return 0; 1413 } 1414 1415 /* 1416 * meagasas_display_intel_branding - Display branding string 1417 * @instance: per adapter object 1418 * 1419 * Return nothing. 1420 */ 1421 static void 1422 megasas_display_intel_branding(struct megasas_instance *instance) 1423 { 1424 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) 1425 return; 1426 1427 switch (instance->pdev->device) { 1428 case PCI_DEVICE_ID_LSI_INVADER: 1429 switch (instance->pdev->subsystem_device) { 1430 case MEGARAID_INTEL_RS3DC080_SSDID: 1431 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1432 instance->host->host_no, 1433 MEGARAID_INTEL_RS3DC080_BRANDING); 1434 break; 1435 case MEGARAID_INTEL_RS3DC040_SSDID: 1436 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1437 instance->host->host_no, 1438 MEGARAID_INTEL_RS3DC040_BRANDING); 1439 break; 1440 case MEGARAID_INTEL_RS3SC008_SSDID: 1441 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1442 instance->host->host_no, 1443 MEGARAID_INTEL_RS3SC008_BRANDING); 1444 break; 1445 case MEGARAID_INTEL_RS3MC044_SSDID: 1446 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1447 instance->host->host_no, 1448 MEGARAID_INTEL_RS3MC044_BRANDING); 1449 break; 1450 default: 1451 break; 1452 } 1453 break; 1454 case PCI_DEVICE_ID_LSI_FURY: 1455 switch (instance->pdev->subsystem_device) { 1456 case MEGARAID_INTEL_RS3WC080_SSDID: 1457 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1458 instance->host->host_no, 1459 MEGARAID_INTEL_RS3WC080_BRANDING); 1460 break; 1461 case MEGARAID_INTEL_RS3WC040_SSDID: 1462 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1463 instance->host->host_no, 1464 MEGARAID_INTEL_RS3WC040_BRANDING); 1465 break; 1466 default: 1467 break; 1468 } 1469 break; 1470 case PCI_DEVICE_ID_LSI_CUTLASS_52: 1471 case PCI_DEVICE_ID_LSI_CUTLASS_53: 1472 switch (instance->pdev->subsystem_device) { 1473 case MEGARAID_INTEL_RMS3BC160_SSDID: 1474 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1475 instance->host->host_no, 1476 MEGARAID_INTEL_RMS3BC160_BRANDING); 1477 break; 1478 default: 1479 break; 1480 } 1481 break; 1482 default: 1483 break; 1484 } 1485 } 1486 1487 /** 1488 * megasas_allocate_raid_maps - Allocate memory for RAID maps 1489 * @instance: Adapter soft state 1490 * 1491 * return: if success: return 0 1492 * failed: return -ENOMEM 1493 */ 1494 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) 1495 { 1496 struct fusion_context *fusion; 1497 int i = 0; 1498 1499 fusion = instance->ctrl_context; 1500 1501 fusion->drv_map_pages = get_order(fusion->drv_map_sz); 1502 1503 for (i = 0; i < 2; i++) { 1504 fusion->ld_map[i] = NULL; 1505 1506 fusion->ld_drv_map[i] = (void *) 1507 __get_free_pages(__GFP_ZERO | GFP_KERNEL, 1508 fusion->drv_map_pages); 1509 1510 if (!fusion->ld_drv_map[i]) { 1511 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); 1512 1513 if (!fusion->ld_drv_map[i]) { 1514 dev_err(&instance->pdev->dev, 1515 "Could not allocate memory for local map" 1516 " size requested: %d\n", 1517 fusion->drv_map_sz); 1518 goto ld_drv_map_alloc_fail; 1519 } 1520 } 1521 } 1522 1523 for (i = 0; i < 2; i++) { 1524 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, 1525 fusion->max_map_sz, 1526 &fusion->ld_map_phys[i], 1527 GFP_KERNEL); 1528 if (!fusion->ld_map[i]) { 1529 dev_err(&instance->pdev->dev, 1530 "Could not allocate memory for map info %s:%d\n", 1531 __func__, __LINE__); 1532 goto ld_map_alloc_fail; 1533 } 1534 } 1535 1536 return 0; 1537 1538 ld_map_alloc_fail: 1539 for (i = 0; i < 2; i++) { 1540 if (fusion->ld_map[i]) 1541 dma_free_coherent(&instance->pdev->dev, 1542 fusion->max_map_sz, 1543 fusion->ld_map[i], 1544 fusion->ld_map_phys[i]); 1545 } 1546 1547 ld_drv_map_alloc_fail: 1548 for (i = 0; i < 2; i++) { 1549 if (fusion->ld_drv_map[i]) { 1550 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 1551 vfree(fusion->ld_drv_map[i]); 1552 else 1553 free_pages((ulong)fusion->ld_drv_map[i], 1554 fusion->drv_map_pages); 1555 } 1556 } 1557 1558 return -ENOMEM; 1559 } 1560 1561 /** 1562 * megasas_configure_queue_sizes - Calculate size of request desc queue, 1563 * reply desc queue, 1564 * IO request frame queue, set can_queue. 1565 * @instance: Adapter soft state 1566 * @return: void 1567 */ 1568 static inline 1569 void megasas_configure_queue_sizes(struct megasas_instance *instance) 1570 { 1571 struct fusion_context *fusion; 1572 u16 max_cmd; 1573 1574 fusion = instance->ctrl_context; 1575 max_cmd = instance->max_fw_cmds; 1576 1577 if (instance->adapter_type == VENTURA_SERIES) 1578 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS; 1579 else 1580 instance->max_mpt_cmds = instance->max_fw_cmds; 1581 1582 instance->max_scsi_cmds = instance->max_fw_cmds - 1583 (MEGASAS_FUSION_INTERNAL_CMDS + 1584 MEGASAS_FUSION_IOCTL_CMDS); 1585 instance->cur_can_queue = instance->max_scsi_cmds; 1586 instance->host->can_queue = instance->cur_can_queue; 1587 1588 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16; 1589 1590 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * 1591 instance->max_mpt_cmds; 1592 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) * 1593 (fusion->reply_q_depth); 1594 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + 1595 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1596 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */ 1597 } 1598 1599 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance) 1600 { 1601 struct fusion_context *fusion; 1602 struct megasas_cmd *cmd; 1603 1604 fusion = instance->ctrl_context; 1605 1606 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL); 1607 1608 if (!cmd) { 1609 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1610 __func__, __LINE__); 1611 return -ENOMEM; 1612 } 1613 1614 cmd->frame = dma_alloc_coherent(&instance->pdev->dev, 1615 IOC_INIT_FRAME_SIZE, 1616 &cmd->frame_phys_addr, GFP_KERNEL); 1617 1618 if (!cmd->frame) { 1619 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1620 __func__, __LINE__); 1621 kfree(cmd); 1622 return -ENOMEM; 1623 } 1624 1625 fusion->ioc_init_cmd = cmd; 1626 return 0; 1627 } 1628 1629 /** 1630 * megasas_free_ioc_init_cmd - Free IOC INIT command frame 1631 * @instance: Adapter soft state 1632 */ 1633 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance) 1634 { 1635 struct fusion_context *fusion; 1636 1637 fusion = instance->ctrl_context; 1638 1639 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame) 1640 dma_free_coherent(&instance->pdev->dev, 1641 IOC_INIT_FRAME_SIZE, 1642 fusion->ioc_init_cmd->frame, 1643 fusion->ioc_init_cmd->frame_phys_addr); 1644 1645 if (fusion->ioc_init_cmd) 1646 kfree(fusion->ioc_init_cmd); 1647 } 1648 1649 /** 1650 * megasas_init_adapter_fusion - Initializes the FW 1651 * @instance: Adapter soft state 1652 * 1653 * This is the main function for initializing firmware. 1654 */ 1655 u32 1656 megasas_init_adapter_fusion(struct megasas_instance *instance) 1657 { 1658 struct megasas_register_set __iomem *reg_set; 1659 struct fusion_context *fusion; 1660 u32 scratch_pad_2; 1661 int i = 0, count; 1662 1663 fusion = instance->ctrl_context; 1664 1665 reg_set = instance->reg_set; 1666 1667 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT); 1668 1669 /* 1670 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames 1671 */ 1672 instance->max_mfi_cmds = 1673 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS; 1674 1675 megasas_configure_queue_sizes(instance); 1676 1677 scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2); 1678 /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set, 1679 * Firmware support extended IO chain frame which is 4 times more than 1680 * legacy Firmware. 1681 * Legacy Firmware - Frame size is (8 * 128) = 1K 1682 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K 1683 */ 1684 if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK) 1685 instance->max_chain_frame_sz = 1686 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1687 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO; 1688 else 1689 instance->max_chain_frame_sz = 1690 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1691 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO; 1692 1693 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) { 1694 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n", 1695 instance->max_chain_frame_sz, 1696 MEGASAS_CHAIN_FRAME_SZ_MIN); 1697 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN; 1698 } 1699 1700 fusion->max_sge_in_main_msg = 1701 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1702 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; 1703 1704 fusion->max_sge_in_chain = 1705 instance->max_chain_frame_sz 1706 / sizeof(union MPI2_SGE_IO_UNION); 1707 1708 instance->max_num_sge = 1709 rounddown_pow_of_two(fusion->max_sge_in_main_msg 1710 + fusion->max_sge_in_chain - 2); 1711 1712 /* Used for pass thru MFI frame (DCMD) */ 1713 fusion->chain_offset_mfi_pthru = 1714 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; 1715 1716 fusion->chain_offset_io_request = 1717 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - 1718 sizeof(union MPI2_SGE_IO_UNION))/16; 1719 1720 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 1721 for (i = 0 ; i < count; i++) 1722 fusion->last_reply_idx[i] = 0; 1723 1724 /* 1725 * For fusion adapters, 3 commands for IOCTL and 8 commands 1726 * for driver's internal DCMDs. 1727 */ 1728 instance->max_scsi_cmds = instance->max_fw_cmds - 1729 (MEGASAS_FUSION_INTERNAL_CMDS + 1730 MEGASAS_FUSION_IOCTL_CMDS); 1731 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); 1732 1733 if (megasas_alloc_ioc_init_frame(instance)) 1734 return 1; 1735 1736 /* 1737 * Allocate memory for descriptors 1738 * Create a pool of commands 1739 */ 1740 if (megasas_alloc_cmds(instance)) 1741 goto fail_alloc_mfi_cmds; 1742 if (megasas_alloc_cmds_fusion(instance)) 1743 goto fail_alloc_cmds; 1744 1745 if (megasas_ioc_init_fusion(instance)) 1746 goto fail_ioc_init; 1747 1748 megasas_display_intel_branding(instance); 1749 if (megasas_get_ctrl_info(instance)) { 1750 dev_err(&instance->pdev->dev, 1751 "Could not get controller info. Fail from %s %d\n", 1752 __func__, __LINE__); 1753 goto fail_ioc_init; 1754 } 1755 1756 instance->flag_ieee = 1; 1757 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; 1758 fusion->fast_path_io = 0; 1759 1760 if (megasas_allocate_raid_maps(instance)) 1761 goto fail_ioc_init; 1762 1763 if (!megasas_get_map_info(instance)) 1764 megasas_sync_map_info(instance); 1765 1766 return 0; 1767 1768 fail_ioc_init: 1769 megasas_free_cmds_fusion(instance); 1770 fail_alloc_cmds: 1771 megasas_free_cmds(instance); 1772 fail_alloc_mfi_cmds: 1773 megasas_free_ioc_init_cmd(instance); 1774 return 1; 1775 } 1776 1777 /** 1778 * map_cmd_status - Maps FW cmd status to OS cmd status 1779 * @cmd : Pointer to cmd 1780 * @status : status of cmd returned by FW 1781 * @ext_status : ext status of cmd returned by FW 1782 */ 1783 1784 void 1785 map_cmd_status(struct fusion_context *fusion, 1786 struct scsi_cmnd *scmd, u8 status, u8 ext_status, 1787 u32 data_length, u8 *sense) 1788 { 1789 u8 cmd_type; 1790 int resid; 1791 1792 cmd_type = megasas_cmd_type(scmd); 1793 switch (status) { 1794 1795 case MFI_STAT_OK: 1796 scmd->result = DID_OK << 16; 1797 break; 1798 1799 case MFI_STAT_SCSI_IO_FAILED: 1800 case MFI_STAT_LD_INIT_IN_PROGRESS: 1801 scmd->result = (DID_ERROR << 16) | ext_status; 1802 break; 1803 1804 case MFI_STAT_SCSI_DONE_WITH_ERROR: 1805 1806 scmd->result = (DID_OK << 16) | ext_status; 1807 if (ext_status == SAM_STAT_CHECK_CONDITION) { 1808 memset(scmd->sense_buffer, 0, 1809 SCSI_SENSE_BUFFERSIZE); 1810 memcpy(scmd->sense_buffer, sense, 1811 SCSI_SENSE_BUFFERSIZE); 1812 scmd->result |= DRIVER_SENSE << 24; 1813 } 1814 1815 /* 1816 * If the IO request is partially completed, then MR FW will 1817 * update "io_request->DataLength" field with actual number of 1818 * bytes transferred.Driver will set residual bytes count in 1819 * SCSI command structure. 1820 */ 1821 resid = (scsi_bufflen(scmd) - data_length); 1822 scsi_set_resid(scmd, resid); 1823 1824 if (resid && 1825 ((cmd_type == READ_WRITE_LDIO) || 1826 (cmd_type == READ_WRITE_SYSPDIO))) 1827 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" 1828 " requested/completed 0x%x/0x%x\n", 1829 status, scsi_bufflen(scmd), data_length); 1830 break; 1831 1832 case MFI_STAT_LD_OFFLINE: 1833 case MFI_STAT_DEVICE_NOT_FOUND: 1834 scmd->result = DID_BAD_TARGET << 16; 1835 break; 1836 case MFI_STAT_CONFIG_SEQ_MISMATCH: 1837 scmd->result = DID_IMM_RETRY << 16; 1838 break; 1839 default: 1840 scmd->result = DID_ERROR << 16; 1841 break; 1842 } 1843 } 1844 1845 /** 1846 * megasas_is_prp_possible - 1847 * Checks if native NVMe PRPs can be built for the IO 1848 * 1849 * @instance: Adapter soft state 1850 * @scmd: SCSI command from the mid-layer 1851 * @sge_count: scatter gather element count. 1852 * 1853 * Returns: true: PRPs can be built 1854 * false: IEEE SGLs needs to be built 1855 */ 1856 static bool 1857 megasas_is_prp_possible(struct megasas_instance *instance, 1858 struct scsi_cmnd *scmd, int sge_count) 1859 { 1860 struct fusion_context *fusion; 1861 int i; 1862 u32 data_length = 0; 1863 struct scatterlist *sg_scmd; 1864 bool build_prp = false; 1865 u32 mr_nvme_pg_size; 1866 1867 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1868 MR_DEFAULT_NVME_PAGE_SIZE); 1869 fusion = instance->ctrl_context; 1870 data_length = scsi_bufflen(scmd); 1871 sg_scmd = scsi_sglist(scmd); 1872 1873 /* 1874 * NVMe uses one PRP for each page (or part of a page) 1875 * look at the data length - if 4 pages or less then IEEE is OK 1876 * if > 5 pages then we need to build a native SGL 1877 * if > 4 and <= 5 pages, then check physical address of 1st SG entry 1878 * if this first size in the page is >= the residual beyond 4 pages 1879 * then use IEEE, otherwise use native SGL 1880 */ 1881 1882 if (data_length > (mr_nvme_pg_size * 5)) { 1883 build_prp = true; 1884 } else if ((data_length > (mr_nvme_pg_size * 4)) && 1885 (data_length <= (mr_nvme_pg_size * 5))) { 1886 /* check if 1st SG entry size is < residual beyond 4 pages */ 1887 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) 1888 build_prp = true; 1889 } 1890 1891 /* 1892 * Below code detects gaps/holes in IO data buffers. 1893 * What does holes/gaps mean? 1894 * Any SGE except first one in a SGL starts at non NVME page size 1895 * aligned address OR Any SGE except last one in a SGL ends at 1896 * non NVME page size boundary. 1897 * 1898 * Driver has already informed block layer by setting boundary rules for 1899 * bio merging done at NVME page size boundary calling kernel API 1900 * blk_queue_virt_boundary inside slave_config. 1901 * Still there is possibility of IO coming with holes to driver because of 1902 * IO merging done by IO scheduler. 1903 * 1904 * With SCSI BLK MQ enabled, there will be no IO with holes as there is no 1905 * IO scheduling so no IO merging. 1906 * 1907 * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and 1908 * then sending IOs with holes. 1909 * 1910 * Though driver can request block layer to disable IO merging by calling- 1911 * queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, sdev->request_queue) but 1912 * user may tune sysfs parameter- nomerges again to 0 or 1. 1913 * 1914 * If in future IO scheduling is enabled with SCSI BLK MQ, 1915 * this algorithm to detect holes will be required in driver 1916 * for SCSI BLK MQ enabled case as well. 1917 * 1918 * 1919 */ 1920 scsi_for_each_sg(scmd, sg_scmd, sge_count, i) { 1921 if ((i != 0) && (i != (sge_count - 1))) { 1922 if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) || 1923 mega_mod64(sg_dma_address(sg_scmd), 1924 mr_nvme_pg_size)) { 1925 build_prp = false; 1926 atomic_inc(&instance->sge_holes_type1); 1927 break; 1928 } 1929 } 1930 1931 if ((sge_count > 1) && (i == 0)) { 1932 if ((mega_mod64((sg_dma_address(sg_scmd) + 1933 sg_dma_len(sg_scmd)), 1934 mr_nvme_pg_size))) { 1935 build_prp = false; 1936 atomic_inc(&instance->sge_holes_type2); 1937 break; 1938 } 1939 } 1940 1941 if ((sge_count > 1) && (i == (sge_count - 1))) { 1942 if (mega_mod64(sg_dma_address(sg_scmd), 1943 mr_nvme_pg_size)) { 1944 build_prp = false; 1945 atomic_inc(&instance->sge_holes_type3); 1946 break; 1947 } 1948 } 1949 } 1950 1951 return build_prp; 1952 } 1953 1954 /** 1955 * megasas_make_prp_nvme - 1956 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only 1957 * 1958 * @instance: Adapter soft state 1959 * @scmd: SCSI command from the mid-layer 1960 * @sgl_ptr: SGL to be filled in 1961 * @cmd: Fusion command frame 1962 * @sge_count: scatter gather element count. 1963 * 1964 * Returns: true: PRPs are built 1965 * false: IEEE SGLs needs to be built 1966 */ 1967 static bool 1968 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, 1969 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 1970 struct megasas_cmd_fusion *cmd, int sge_count) 1971 { 1972 int sge_len, offset, num_prp_in_chain = 0; 1973 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; 1974 u64 *ptr_sgl; 1975 dma_addr_t ptr_sgl_phys; 1976 u64 sge_addr; 1977 u32 page_mask, page_mask_result; 1978 struct scatterlist *sg_scmd; 1979 u32 first_prp_len; 1980 bool build_prp = false; 1981 int data_len = scsi_bufflen(scmd); 1982 struct fusion_context *fusion; 1983 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1984 MR_DEFAULT_NVME_PAGE_SIZE); 1985 1986 fusion = instance->ctrl_context; 1987 1988 build_prp = megasas_is_prp_possible(instance, scmd, sge_count); 1989 1990 if (!build_prp) 1991 return false; 1992 1993 /* 1994 * Nvme has a very convoluted prp format. One prp is required 1995 * for each page or partial page. Driver need to split up OS sg_list 1996 * entries if it is longer than one page or cross a page 1997 * boundary. Driver also have to insert a PRP list pointer entry as 1998 * the last entry in each physical page of the PRP list. 1999 * 2000 * NOTE: The first PRP "entry" is actually placed in the first 2001 * SGL entry in the main message as IEEE 64 format. The 2nd 2002 * entry in the main message is the chain element, and the rest 2003 * of the PRP entries are built in the contiguous pcie buffer. 2004 */ 2005 page_mask = mr_nvme_pg_size - 1; 2006 ptr_sgl = (u64 *)cmd->sg_frame; 2007 ptr_sgl_phys = cmd->sg_frame_phys_addr; 2008 memset(ptr_sgl, 0, instance->max_chain_frame_sz); 2009 2010 /* Build chain frame element which holds all prps except first*/ 2011 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) 2012 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); 2013 2014 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); 2015 main_chain_element->NextChainOffset = 0; 2016 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2017 IEEE_SGE_FLAGS_SYSTEM_ADDR | 2018 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; 2019 2020 /* Build first prp, sge need not to be page aligned*/ 2021 ptr_first_sgl = sgl_ptr; 2022 sg_scmd = scsi_sglist(scmd); 2023 sge_addr = sg_dma_address(sg_scmd); 2024 sge_len = sg_dma_len(sg_scmd); 2025 2026 offset = (u32)(sge_addr & page_mask); 2027 first_prp_len = mr_nvme_pg_size - offset; 2028 2029 ptr_first_sgl->Address = cpu_to_le64(sge_addr); 2030 ptr_first_sgl->Length = cpu_to_le32(first_prp_len); 2031 2032 data_len -= first_prp_len; 2033 2034 if (sge_len > first_prp_len) { 2035 sge_addr += first_prp_len; 2036 sge_len -= first_prp_len; 2037 } else if (sge_len == first_prp_len) { 2038 sg_scmd = sg_next(sg_scmd); 2039 sge_addr = sg_dma_address(sg_scmd); 2040 sge_len = sg_dma_len(sg_scmd); 2041 } 2042 2043 for (;;) { 2044 offset = (u32)(sge_addr & page_mask); 2045 2046 /* Put PRP pointer due to page boundary*/ 2047 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; 2048 if (unlikely(!page_mask_result)) { 2049 scmd_printk(KERN_NOTICE, 2050 scmd, "page boundary ptr_sgl: 0x%p\n", 2051 ptr_sgl); 2052 ptr_sgl_phys += 8; 2053 *ptr_sgl = cpu_to_le64(ptr_sgl_phys); 2054 ptr_sgl++; 2055 num_prp_in_chain++; 2056 } 2057 2058 *ptr_sgl = cpu_to_le64(sge_addr); 2059 ptr_sgl++; 2060 ptr_sgl_phys += 8; 2061 num_prp_in_chain++; 2062 2063 sge_addr += mr_nvme_pg_size; 2064 sge_len -= mr_nvme_pg_size; 2065 data_len -= mr_nvme_pg_size; 2066 2067 if (data_len <= 0) 2068 break; 2069 2070 if (sge_len > 0) 2071 continue; 2072 2073 sg_scmd = sg_next(sg_scmd); 2074 sge_addr = sg_dma_address(sg_scmd); 2075 sge_len = sg_dma_len(sg_scmd); 2076 } 2077 2078 main_chain_element->Length = 2079 cpu_to_le32(num_prp_in_chain * sizeof(u64)); 2080 2081 atomic_inc(&instance->prp_sgl); 2082 return build_prp; 2083 } 2084 2085 /** 2086 * megasas_make_sgl_fusion - Prepares 32-bit SGL 2087 * @instance: Adapter soft state 2088 * @scp: SCSI command from the mid-layer 2089 * @sgl_ptr: SGL to be filled in 2090 * @cmd: cmd we are working on 2091 * @sge_count sge count 2092 * 2093 */ 2094 static void 2095 megasas_make_sgl_fusion(struct megasas_instance *instance, 2096 struct scsi_cmnd *scp, 2097 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2098 struct megasas_cmd_fusion *cmd, int sge_count) 2099 { 2100 int i, sg_processed; 2101 struct scatterlist *os_sgl; 2102 struct fusion_context *fusion; 2103 2104 fusion = instance->ctrl_context; 2105 2106 if (instance->adapter_type >= INVADER_SERIES) { 2107 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; 2108 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 2109 sgl_ptr_end->Flags = 0; 2110 } 2111 2112 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 2113 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); 2114 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); 2115 sgl_ptr->Flags = 0; 2116 if (instance->adapter_type >= INVADER_SERIES) 2117 if (i == sge_count - 1) 2118 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; 2119 sgl_ptr++; 2120 sg_processed = i + 1; 2121 2122 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && 2123 (sge_count > fusion->max_sge_in_main_msg)) { 2124 2125 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; 2126 if (instance->adapter_type >= INVADER_SERIES) { 2127 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2128 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != 2129 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) 2130 cmd->io_request->ChainOffset = 2131 fusion-> 2132 chain_offset_io_request; 2133 else 2134 cmd->io_request->ChainOffset = 0; 2135 } else 2136 cmd->io_request->ChainOffset = 2137 fusion->chain_offset_io_request; 2138 2139 sg_chain = sgl_ptr; 2140 /* Prepare chain element */ 2141 sg_chain->NextChainOffset = 0; 2142 if (instance->adapter_type >= INVADER_SERIES) 2143 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; 2144 else 2145 sg_chain->Flags = 2146 (IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2147 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); 2148 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); 2149 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); 2150 2151 sgl_ptr = 2152 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; 2153 memset(sgl_ptr, 0, instance->max_chain_frame_sz); 2154 } 2155 } 2156 atomic_inc(&instance->ieee_sgl); 2157 } 2158 2159 /** 2160 * megasas_make_sgl - Build Scatter Gather List(SGLs) 2161 * @scp: SCSI command pointer 2162 * @instance: Soft instance of controller 2163 * @cmd: Fusion command pointer 2164 * 2165 * This function will build sgls based on device type. 2166 * For nvme drives, there is different way of building sgls in nvme native 2167 * format- PRPs(Physical Region Page). 2168 * 2169 * Returns the number of sg lists actually used, zero if the sg lists 2170 * is NULL, or -ENOMEM if the mapping failed 2171 */ 2172 static 2173 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, 2174 struct megasas_cmd_fusion *cmd) 2175 { 2176 int sge_count; 2177 bool build_prp = false; 2178 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; 2179 2180 sge_count = scsi_dma_map(scp); 2181 2182 if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) 2183 return sge_count; 2184 2185 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; 2186 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2187 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && 2188 (cmd->pd_interface == NVME_PD)) 2189 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, 2190 cmd, sge_count); 2191 2192 if (!build_prp) 2193 megasas_make_sgl_fusion(instance, scp, sgl_chain64, 2194 cmd, sge_count); 2195 2196 return sge_count; 2197 } 2198 2199 /** 2200 * megasas_set_pd_lba - Sets PD LBA 2201 * @cdb: CDB 2202 * @cdb_len: cdb length 2203 * @start_blk: Start block of IO 2204 * 2205 * Used to set the PD LBA in CDB for FP IOs 2206 */ 2207 void 2208 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, 2209 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, 2210 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) 2211 { 2212 struct MR_LD_RAID *raid; 2213 u16 ld; 2214 u64 start_blk = io_info->pdBlock; 2215 u8 *cdb = io_request->CDB.CDB32; 2216 u32 num_blocks = io_info->numBlocks; 2217 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; 2218 2219 /* Check if T10 PI (DIF) is enabled for this LD */ 2220 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); 2221 raid = MR_LdRaidGet(ld, local_map_ptr); 2222 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { 2223 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2224 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; 2225 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; 2226 2227 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 2228 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; 2229 else 2230 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; 2231 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; 2232 2233 /* LBA */ 2234 cdb[12] = (u8)((start_blk >> 56) & 0xff); 2235 cdb[13] = (u8)((start_blk >> 48) & 0xff); 2236 cdb[14] = (u8)((start_blk >> 40) & 0xff); 2237 cdb[15] = (u8)((start_blk >> 32) & 0xff); 2238 cdb[16] = (u8)((start_blk >> 24) & 0xff); 2239 cdb[17] = (u8)((start_blk >> 16) & 0xff); 2240 cdb[18] = (u8)((start_blk >> 8) & 0xff); 2241 cdb[19] = (u8)(start_blk & 0xff); 2242 2243 /* Logical block reference tag */ 2244 io_request->CDB.EEDP32.PrimaryReferenceTag = 2245 cpu_to_be32(ref_tag); 2246 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); 2247 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ 2248 2249 /* Transfer length */ 2250 cdb[28] = (u8)((num_blocks >> 24) & 0xff); 2251 cdb[29] = (u8)((num_blocks >> 16) & 0xff); 2252 cdb[30] = (u8)((num_blocks >> 8) & 0xff); 2253 cdb[31] = (u8)(num_blocks & 0xff); 2254 2255 /* set SCSI IO EEDPFlags */ 2256 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) { 2257 io_request->EEDPFlags = cpu_to_le16( 2258 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2259 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | 2260 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | 2261 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | 2262 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | 2263 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); 2264 } else { 2265 io_request->EEDPFlags = cpu_to_le16( 2266 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2267 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); 2268 } 2269 io_request->Control |= cpu_to_le32((0x4 << 26)); 2270 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); 2271 } else { 2272 /* Some drives don't support 16/12 byte CDB's, convert to 10 */ 2273 if (((cdb_len == 12) || (cdb_len == 16)) && 2274 (start_blk <= 0xffffffff)) { 2275 if (cdb_len == 16) { 2276 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; 2277 flagvals = cdb[1]; 2278 groupnum = cdb[14]; 2279 control = cdb[15]; 2280 } else { 2281 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; 2282 flagvals = cdb[1]; 2283 groupnum = cdb[10]; 2284 control = cdb[11]; 2285 } 2286 2287 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2288 2289 cdb[0] = opcode; 2290 cdb[1] = flagvals; 2291 cdb[6] = groupnum; 2292 cdb[9] = control; 2293 2294 /* Transfer length */ 2295 cdb[8] = (u8)(num_blocks & 0xff); 2296 cdb[7] = (u8)((num_blocks >> 8) & 0xff); 2297 2298 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ 2299 cdb_len = 10; 2300 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { 2301 /* Convert to 16 byte CDB for large LBA's */ 2302 switch (cdb_len) { 2303 case 6: 2304 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; 2305 control = cdb[5]; 2306 break; 2307 case 10: 2308 opcode = 2309 cdb[0] == READ_10 ? READ_16 : WRITE_16; 2310 flagvals = cdb[1]; 2311 groupnum = cdb[6]; 2312 control = cdb[9]; 2313 break; 2314 case 12: 2315 opcode = 2316 cdb[0] == READ_12 ? READ_16 : WRITE_16; 2317 flagvals = cdb[1]; 2318 groupnum = cdb[10]; 2319 control = cdb[11]; 2320 break; 2321 } 2322 2323 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2324 2325 cdb[0] = opcode; 2326 cdb[1] = flagvals; 2327 cdb[14] = groupnum; 2328 cdb[15] = control; 2329 2330 /* Transfer length */ 2331 cdb[13] = (u8)(num_blocks & 0xff); 2332 cdb[12] = (u8)((num_blocks >> 8) & 0xff); 2333 cdb[11] = (u8)((num_blocks >> 16) & 0xff); 2334 cdb[10] = (u8)((num_blocks >> 24) & 0xff); 2335 2336 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ 2337 cdb_len = 16; 2338 } 2339 2340 /* Normal case, just load LBA here */ 2341 switch (cdb_len) { 2342 case 6: 2343 { 2344 u8 val = cdb[1] & 0xE0; 2345 cdb[3] = (u8)(start_blk & 0xff); 2346 cdb[2] = (u8)((start_blk >> 8) & 0xff); 2347 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); 2348 break; 2349 } 2350 case 10: 2351 cdb[5] = (u8)(start_blk & 0xff); 2352 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2353 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2354 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2355 break; 2356 case 12: 2357 cdb[5] = (u8)(start_blk & 0xff); 2358 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2359 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2360 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2361 break; 2362 case 16: 2363 cdb[9] = (u8)(start_blk & 0xff); 2364 cdb[8] = (u8)((start_blk >> 8) & 0xff); 2365 cdb[7] = (u8)((start_blk >> 16) & 0xff); 2366 cdb[6] = (u8)((start_blk >> 24) & 0xff); 2367 cdb[5] = (u8)((start_blk >> 32) & 0xff); 2368 cdb[4] = (u8)((start_blk >> 40) & 0xff); 2369 cdb[3] = (u8)((start_blk >> 48) & 0xff); 2370 cdb[2] = (u8)((start_blk >> 56) & 0xff); 2371 break; 2372 } 2373 } 2374 } 2375 2376 /** 2377 * megasas_stream_detect - stream detection on read and and write IOs 2378 * @instance: Adapter soft state 2379 * @cmd: Command to be prepared 2380 * @io_info: IO Request info 2381 * 2382 */ 2383 2384 /** stream detection on read and and write IOs */ 2385 static void megasas_stream_detect(struct megasas_instance *instance, 2386 struct megasas_cmd_fusion *cmd, 2387 struct IO_REQUEST_INFO *io_info) 2388 { 2389 struct fusion_context *fusion = instance->ctrl_context; 2390 u32 device_id = io_info->ldTgtId; 2391 struct LD_STREAM_DETECT *current_ld_sd 2392 = fusion->stream_detect_by_ld[device_id]; 2393 u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; 2394 u32 shifted_values, unshifted_values; 2395 u32 index_value_mask, shifted_values_mask; 2396 int i; 2397 bool is_read_ahead = false; 2398 struct STREAM_DETECT *current_sd; 2399 /* find possible stream */ 2400 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { 2401 stream_num = (*track_stream >> 2402 (i * BITS_PER_INDEX_STREAM)) & 2403 STREAM_MASK; 2404 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2405 /* if we found a stream, update the raid 2406 * context and also update the mruBitMap 2407 */ 2408 /* boundary condition */ 2409 if ((current_sd->next_seq_lba) && 2410 (io_info->ldStartBlock >= current_sd->next_seq_lba) && 2411 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && 2412 (current_sd->is_read == io_info->isRead)) { 2413 2414 if ((io_info->ldStartBlock != current_sd->next_seq_lba) && 2415 ((!io_info->isRead) || (!is_read_ahead))) 2416 /* 2417 * Once the API availible we need to change this. 2418 * At this point we are not allowing any gap 2419 */ 2420 continue; 2421 2422 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); 2423 current_sd->next_seq_lba = 2424 io_info->ldStartBlock + io_info->numBlocks; 2425 /* 2426 * update the mruBitMap LRU 2427 */ 2428 shifted_values_mask = 2429 (1 << i * BITS_PER_INDEX_STREAM) - 1; 2430 shifted_values = ((*track_stream & shifted_values_mask) 2431 << BITS_PER_INDEX_STREAM); 2432 index_value_mask = 2433 STREAM_MASK << i * BITS_PER_INDEX_STREAM; 2434 unshifted_values = 2435 *track_stream & ~(shifted_values_mask | 2436 index_value_mask); 2437 *track_stream = 2438 unshifted_values | shifted_values | stream_num; 2439 return; 2440 } 2441 } 2442 /* 2443 * if we did not find any stream, create a new one 2444 * from the least recently used 2445 */ 2446 stream_num = (*track_stream >> 2447 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & 2448 STREAM_MASK; 2449 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2450 current_sd->is_read = io_info->isRead; 2451 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; 2452 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); 2453 return; 2454 } 2455 2456 /** 2457 * megasas_set_raidflag_cpu_affinity - This function sets the cpu 2458 * affinity (cpu of the controller) and raid_flags in the raid context 2459 * based on IO type. 2460 * 2461 * @praid_context: IO RAID context 2462 * @raid: LD raid map 2463 * @fp_possible: Is fast path possible? 2464 * @is_read: Is read IO? 2465 * 2466 */ 2467 static void 2468 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context, 2469 struct MR_LD_RAID *raid, bool fp_possible, 2470 u8 is_read, u32 scsi_buff_len) 2471 { 2472 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2473 struct RAID_CONTEXT_G35 *rctx_g35; 2474 2475 rctx_g35 = &praid_context->raid_context_g35; 2476 if (fp_possible) { 2477 if (is_read) { 2478 if ((raid->cpuAffinity.pdRead.cpu0) && 2479 (raid->cpuAffinity.pdRead.cpu1)) 2480 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2481 else if (raid->cpuAffinity.pdRead.cpu1) 2482 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2483 } else { 2484 if ((raid->cpuAffinity.pdWrite.cpu0) && 2485 (raid->cpuAffinity.pdWrite.cpu1)) 2486 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2487 else if (raid->cpuAffinity.pdWrite.cpu1) 2488 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2489 /* Fast path cache by pass capable R0/R1 VD */ 2490 if ((raid->level <= 1) && 2491 (raid->capability.fp_cache_bypass_capable)) { 2492 rctx_g35->routing_flags |= 2493 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); 2494 rctx_g35->raid_flags = 2495 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS 2496 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2497 } 2498 } 2499 } else { 2500 if (is_read) { 2501 if ((raid->cpuAffinity.ldRead.cpu0) && 2502 (raid->cpuAffinity.ldRead.cpu1)) 2503 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2504 else if (raid->cpuAffinity.ldRead.cpu1) 2505 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2506 } else { 2507 if ((raid->cpuAffinity.ldWrite.cpu0) && 2508 (raid->cpuAffinity.ldWrite.cpu1)) 2509 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2510 else if (raid->cpuAffinity.ldWrite.cpu1) 2511 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2512 2513 if (is_stream_detected(rctx_g35) && 2514 ((raid->level == 5) || (raid->level == 6)) && 2515 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && 2516 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) 2517 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2518 } 2519 } 2520 2521 rctx_g35->routing_flags |= 2522 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2523 2524 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2525 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. 2526 * IO Subtype is not bitmap. 2527 */ 2528 if ((raid->level == 1) && (!is_read)) { 2529 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2530 praid_context->raid_context_g35.raid_flags = 2531 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2532 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2533 } 2534 } 2535 2536 /** 2537 * megasas_build_ldio_fusion - Prepares IOs to devices 2538 * @instance: Adapter soft state 2539 * @scp: SCSI command 2540 * @cmd: Command to be prepared 2541 * 2542 * Prepares the io_request and chain elements (sg_frame) for IO 2543 * The IO can be for PD (Fast Path) or LD 2544 */ 2545 void 2546 megasas_build_ldio_fusion(struct megasas_instance *instance, 2547 struct scsi_cmnd *scp, 2548 struct megasas_cmd_fusion *cmd) 2549 { 2550 bool fp_possible; 2551 u16 ld; 2552 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; 2553 u32 scsi_buff_len; 2554 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2555 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 2556 struct IO_REQUEST_INFO io_info; 2557 struct fusion_context *fusion; 2558 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2559 u8 *raidLUN; 2560 unsigned long spinlock_flags; 2561 union RAID_CONTEXT_UNION *praid_context; 2562 struct MR_LD_RAID *raid = NULL; 2563 struct MR_PRIV_DEVICE *mrdev_priv; 2564 2565 device_id = MEGASAS_DEV_INDEX(scp); 2566 2567 fusion = instance->ctrl_context; 2568 2569 io_request = cmd->io_request; 2570 io_request->RaidContext.raid_context.virtual_disk_tgt_id = 2571 cpu_to_le16(device_id); 2572 io_request->RaidContext.raid_context.status = 0; 2573 io_request->RaidContext.raid_context.ex_status = 0; 2574 2575 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 2576 2577 start_lba_lo = 0; 2578 start_lba_hi = 0; 2579 fp_possible = false; 2580 2581 /* 2582 * 6-byte READ(0x08) or WRITE(0x0A) cdb 2583 */ 2584 if (scp->cmd_len == 6) { 2585 datalength = (u32) scp->cmnd[4]; 2586 start_lba_lo = ((u32) scp->cmnd[1] << 16) | 2587 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 2588 2589 start_lba_lo &= 0x1FFFFF; 2590 } 2591 2592 /* 2593 * 10-byte READ(0x28) or WRITE(0x2A) cdb 2594 */ 2595 else if (scp->cmd_len == 10) { 2596 datalength = (u32) scp->cmnd[8] | 2597 ((u32) scp->cmnd[7] << 8); 2598 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2599 ((u32) scp->cmnd[3] << 16) | 2600 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2601 } 2602 2603 /* 2604 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 2605 */ 2606 else if (scp->cmd_len == 12) { 2607 datalength = ((u32) scp->cmnd[6] << 24) | 2608 ((u32) scp->cmnd[7] << 16) | 2609 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2610 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2611 ((u32) scp->cmnd[3] << 16) | 2612 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2613 } 2614 2615 /* 2616 * 16-byte READ(0x88) or WRITE(0x8A) cdb 2617 */ 2618 else if (scp->cmd_len == 16) { 2619 datalength = ((u32) scp->cmnd[10] << 24) | 2620 ((u32) scp->cmnd[11] << 16) | 2621 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 2622 start_lba_lo = ((u32) scp->cmnd[6] << 24) | 2623 ((u32) scp->cmnd[7] << 16) | 2624 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2625 2626 start_lba_hi = ((u32) scp->cmnd[2] << 24) | 2627 ((u32) scp->cmnd[3] << 16) | 2628 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2629 } 2630 2631 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); 2632 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; 2633 io_info.numBlocks = datalength; 2634 io_info.ldTgtId = device_id; 2635 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2636 scsi_buff_len = scsi_bufflen(scp); 2637 io_request->DataLength = cpu_to_le32(scsi_buff_len); 2638 2639 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 2640 io_info.isRead = 1; 2641 2642 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2643 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2644 2645 if (ld < instance->fw_supported_vd_count) 2646 raid = MR_LdRaidGet(ld, local_map_ptr); 2647 2648 if (!raid || (!fusion->fast_path_io)) { 2649 io_request->RaidContext.raid_context.reg_lock_flags = 0; 2650 fp_possible = false; 2651 } else { 2652 if (MR_BuildRaidContext(instance, &io_info, 2653 &io_request->RaidContext.raid_context, 2654 local_map_ptr, &raidLUN)) 2655 fp_possible = (io_info.fpOkForIo > 0) ? true : false; 2656 } 2657 2658 /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU 2659 id by default, not CPU group id, otherwise all MSI-X queues won't 2660 be utilized */ 2661 cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ? 2662 raw_smp_processor_id() % instance->msix_vectors : 0; 2663 2664 praid_context = &io_request->RaidContext; 2665 2666 if (instance->adapter_type == VENTURA_SERIES) { 2667 /* FP for Optimal raid level 1. 2668 * All large RAID-1 writes (> 32 KiB, both WT and WB modes) 2669 * are built by the driver as LD I/Os. 2670 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os 2671 * (there is never a reason to process these as buffered writes) 2672 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os 2673 * with the SLD bit asserted. 2674 */ 2675 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 2676 mrdev_priv = scp->device->hostdata; 2677 2678 if (atomic_inc_return(&instance->fw_outstanding) > 2679 (instance->host->can_queue)) { 2680 fp_possible = false; 2681 atomic_dec(&instance->fw_outstanding); 2682 } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || 2683 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) { 2684 fp_possible = false; 2685 atomic_dec(&instance->fw_outstanding); 2686 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2687 atomic_set(&mrdev_priv->r1_ldio_hint, 2688 instance->r1_ldio_hint_default); 2689 } 2690 } 2691 2692 if (!fp_possible || 2693 (io_info.isRead && io_info.ra_capable)) { 2694 spin_lock_irqsave(&instance->stream_lock, 2695 spinlock_flags); 2696 megasas_stream_detect(instance, cmd, &io_info); 2697 spin_unlock_irqrestore(&instance->stream_lock, 2698 spinlock_flags); 2699 /* In ventura if stream detected for a read and it is 2700 * read ahead capable make this IO as LDIO 2701 */ 2702 if (is_stream_detected(&io_request->RaidContext.raid_context_g35)) 2703 fp_possible = false; 2704 } 2705 2706 /* If raid is NULL, set CPU affinity to default CPU0 */ 2707 if (raid) 2708 megasas_set_raidflag_cpu_affinity(praid_context, 2709 raid, fp_possible, io_info.isRead, 2710 scsi_buff_len); 2711 else 2712 praid_context->raid_context_g35.routing_flags |= 2713 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2714 } 2715 2716 if (fp_possible) { 2717 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, 2718 local_map_ptr, start_lba_lo); 2719 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2720 cmd->request_desc->SCSIIO.RequestFlags = 2721 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO 2722 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2723 if (instance->adapter_type == INVADER_SERIES) { 2724 if (io_request->RaidContext.raid_context.reg_lock_flags == 2725 REGION_TYPE_UNUSED) 2726 cmd->request_desc->SCSIIO.RequestFlags = 2727 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2728 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2729 io_request->RaidContext.raid_context.type 2730 = MPI2_TYPE_CUDA; 2731 io_request->RaidContext.raid_context.nseg = 0x1; 2732 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2733 io_request->RaidContext.raid_context.reg_lock_flags |= 2734 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | 2735 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2736 } else if (instance->adapter_type == VENTURA_SERIES) { 2737 io_request->RaidContext.raid_context_g35.nseg_type |= 2738 (1 << RAID_CONTEXT_NSEG_SHIFT); 2739 io_request->RaidContext.raid_context_g35.nseg_type |= 2740 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2741 io_request->RaidContext.raid_context_g35.routing_flags |= 2742 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2743 io_request->IoFlags |= 2744 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2745 } 2746 if (fusion->load_balance_info && 2747 (fusion->load_balance_info[device_id].loadBalanceFlag) && 2748 (io_info.isRead)) { 2749 io_info.devHandle = 2750 get_updated_dev_handle(instance, 2751 &fusion->load_balance_info[device_id], 2752 &io_info, local_map_ptr); 2753 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; 2754 cmd->pd_r1_lb = io_info.pd_after_lb; 2755 if (instance->adapter_type == VENTURA_SERIES) 2756 io_request->RaidContext.raid_context_g35.span_arm 2757 = io_info.span_arm; 2758 else 2759 io_request->RaidContext.raid_context.span_arm 2760 = io_info.span_arm; 2761 2762 } else 2763 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 2764 2765 if (instance->adapter_type == VENTURA_SERIES) 2766 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; 2767 else 2768 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2769 2770 if ((raidLUN[0] == 1) && 2771 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { 2772 instance->dev_handle = !(instance->dev_handle); 2773 io_info.devHandle = 2774 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; 2775 } 2776 2777 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; 2778 io_request->DevHandle = io_info.devHandle; 2779 cmd->pd_interface = io_info.pd_interface; 2780 /* populate the LUN field */ 2781 memcpy(io_request->LUN, raidLUN, 8); 2782 } else { 2783 io_request->RaidContext.raid_context.timeout_value = 2784 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); 2785 cmd->request_desc->SCSIIO.RequestFlags = 2786 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 2787 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2788 if (instance->adapter_type == INVADER_SERIES) { 2789 if (io_info.do_fp_rlbypass || 2790 (io_request->RaidContext.raid_context.reg_lock_flags 2791 == REGION_TYPE_UNUSED)) 2792 cmd->request_desc->SCSIIO.RequestFlags = 2793 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2794 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2795 io_request->RaidContext.raid_context.type 2796 = MPI2_TYPE_CUDA; 2797 io_request->RaidContext.raid_context.reg_lock_flags |= 2798 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | 2799 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2800 io_request->RaidContext.raid_context.nseg = 0x1; 2801 } else if (instance->adapter_type == VENTURA_SERIES) { 2802 io_request->RaidContext.raid_context_g35.routing_flags |= 2803 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2804 io_request->RaidContext.raid_context_g35.nseg_type |= 2805 (1 << RAID_CONTEXT_NSEG_SHIFT); 2806 io_request->RaidContext.raid_context_g35.nseg_type |= 2807 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2808 } 2809 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2810 io_request->DevHandle = cpu_to_le16(device_id); 2811 2812 } /* Not FP */ 2813 } 2814 2815 /** 2816 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk 2817 * @instance: Adapter soft state 2818 * @scp: SCSI command 2819 * @cmd: Command to be prepared 2820 * 2821 * Prepares the io_request frame for non-rw io cmds for vd. 2822 */ 2823 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, 2824 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) 2825 { 2826 u32 device_id; 2827 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2828 u16 ld; 2829 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2830 struct fusion_context *fusion = instance->ctrl_context; 2831 u8 span, physArm; 2832 __le16 devHandle; 2833 u32 arRef, pd; 2834 struct MR_LD_RAID *raid; 2835 struct RAID_CONTEXT *pRAID_Context; 2836 u8 fp_possible = 1; 2837 2838 io_request = cmd->io_request; 2839 device_id = MEGASAS_DEV_INDEX(scmd); 2840 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2841 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2842 /* get RAID_Context pointer */ 2843 pRAID_Context = &io_request->RaidContext.raid_context; 2844 /* Check with FW team */ 2845 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2846 pRAID_Context->reg_lock_row_lba = 0; 2847 pRAID_Context->reg_lock_length = 0; 2848 2849 if (fusion->fast_path_io && ( 2850 device_id < instance->fw_supported_vd_count)) { 2851 2852 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2853 if (ld >= instance->fw_supported_vd_count) 2854 fp_possible = 0; 2855 else { 2856 raid = MR_LdRaidGet(ld, local_map_ptr); 2857 if (!(raid->capability.fpNonRWCapable)) 2858 fp_possible = 0; 2859 } 2860 } else 2861 fp_possible = 0; 2862 2863 if (!fp_possible) { 2864 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2865 io_request->DevHandle = cpu_to_le16(device_id); 2866 io_request->LUN[1] = scmd->device->lun; 2867 pRAID_Context->timeout_value = 2868 cpu_to_le16 (scmd->request->timeout / HZ); 2869 cmd->request_desc->SCSIIO.RequestFlags = 2870 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2871 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2872 } else { 2873 2874 /* set RAID context values */ 2875 pRAID_Context->config_seq_num = raid->seqNum; 2876 if (instance->adapter_type != VENTURA_SERIES) 2877 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; 2878 pRAID_Context->timeout_value = 2879 cpu_to_le16(raid->fpIoTimeoutForLd); 2880 2881 /* get the DevHandle for the PD (since this is 2882 fpNonRWCapable, this is a single disk RAID0) */ 2883 span = physArm = 0; 2884 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); 2885 pd = MR_ArPdGet(arRef, physArm, local_map_ptr); 2886 devHandle = MR_PdDevHandleGet(pd, local_map_ptr); 2887 2888 /* build request descriptor */ 2889 cmd->request_desc->SCSIIO.RequestFlags = 2890 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 2891 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2892 cmd->request_desc->SCSIIO.DevHandle = devHandle; 2893 2894 /* populate the LUN field */ 2895 memcpy(io_request->LUN, raid->LUN, 8); 2896 2897 /* build the raidScsiIO structure */ 2898 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2899 io_request->DevHandle = devHandle; 2900 } 2901 } 2902 2903 /** 2904 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd 2905 * @instance: Adapter soft state 2906 * @scp: SCSI command 2907 * @cmd: Command to be prepared 2908 * @fp_possible: parameter to detect fast path or firmware path io. 2909 * 2910 * Prepares the io_request frame for rw/non-rw io cmds for syspds 2911 */ 2912 static void 2913 megasas_build_syspd_fusion(struct megasas_instance *instance, 2914 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, 2915 bool fp_possible) 2916 { 2917 u32 device_id; 2918 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2919 u16 pd_index = 0; 2920 u16 os_timeout_value; 2921 u16 timeout_limit; 2922 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2923 struct RAID_CONTEXT *pRAID_Context; 2924 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 2925 struct MR_PRIV_DEVICE *mr_device_priv_data; 2926 struct fusion_context *fusion = instance->ctrl_context; 2927 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; 2928 2929 device_id = MEGASAS_DEV_INDEX(scmd); 2930 pd_index = MEGASAS_PD_INDEX(scmd); 2931 os_timeout_value = scmd->request->timeout / HZ; 2932 mr_device_priv_data = scmd->device->hostdata; 2933 cmd->pd_interface = mr_device_priv_data->interface_type; 2934 2935 io_request = cmd->io_request; 2936 /* get RAID_Context pointer */ 2937 pRAID_Context = &io_request->RaidContext.raid_context; 2938 pRAID_Context->reg_lock_flags = 0; 2939 pRAID_Context->reg_lock_row_lba = 0; 2940 pRAID_Context->reg_lock_length = 0; 2941 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2942 io_request->LUN[1] = scmd->device->lun; 2943 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD 2944 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; 2945 2946 /* If FW supports PD sequence number */ 2947 if (instance->use_seqnum_jbod_fp && 2948 instance->pd_list[pd_index].driveType == TYPE_DISK) { 2949 /* TgtId must be incremented by 255 as jbod seq number is index 2950 * below raid map 2951 */ 2952 /* More than 256 PD/JBOD support for Ventura */ 2953 if (instance->support_morethan256jbod) 2954 pRAID_Context->virtual_disk_tgt_id = 2955 pd_sync->seq[pd_index].pd_target_id; 2956 else 2957 pRAID_Context->virtual_disk_tgt_id = 2958 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1)); 2959 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum; 2960 io_request->DevHandle = pd_sync->seq[pd_index].devHandle; 2961 if (instance->adapter_type == VENTURA_SERIES) { 2962 io_request->RaidContext.raid_context_g35.routing_flags |= 2963 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2964 io_request->RaidContext.raid_context_g35.nseg_type |= 2965 (1 << RAID_CONTEXT_NSEG_SHIFT); 2966 io_request->RaidContext.raid_context_g35.nseg_type |= 2967 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2968 } else { 2969 pRAID_Context->type = MPI2_TYPE_CUDA; 2970 pRAID_Context->nseg = 0x1; 2971 pRAID_Context->reg_lock_flags |= 2972 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA); 2973 } 2974 } else if (fusion->fast_path_io) { 2975 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2976 pRAID_Context->config_seq_num = 0; 2977 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2978 io_request->DevHandle = 2979 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; 2980 } else { 2981 /* Want to send all IO via FW path */ 2982 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2983 pRAID_Context->config_seq_num = 0; 2984 io_request->DevHandle = cpu_to_le16(0xFFFF); 2985 } 2986 2987 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; 2988 cmd->request_desc->SCSIIO.MSIxIndex = 2989 instance->msix_vectors ? 2990 (raw_smp_processor_id() % instance->msix_vectors) : 0; 2991 2992 2993 if (!fp_possible) { 2994 /* system pd firmware path */ 2995 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2996 cmd->request_desc->SCSIIO.RequestFlags = 2997 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2998 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2999 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); 3000 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 3001 } else { 3002 /* system pd Fast Path */ 3003 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3004 timeout_limit = (scmd->device->type == TYPE_DISK) ? 3005 255 : 0xFFFF; 3006 pRAID_Context->timeout_value = 3007 cpu_to_le16((os_timeout_value > timeout_limit) ? 3008 timeout_limit : os_timeout_value); 3009 if (instance->adapter_type >= INVADER_SERIES) 3010 io_request->IoFlags |= 3011 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 3012 3013 cmd->request_desc->SCSIIO.RequestFlags = 3014 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3015 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3016 } 3017 } 3018 3019 /** 3020 * megasas_build_io_fusion - Prepares IOs to devices 3021 * @instance: Adapter soft state 3022 * @scp: SCSI command 3023 * @cmd: Command to be prepared 3024 * 3025 * Invokes helper functions to prepare request frames 3026 * and sets flags appropriate for IO/Non-IO cmd 3027 */ 3028 int 3029 megasas_build_io_fusion(struct megasas_instance *instance, 3030 struct scsi_cmnd *scp, 3031 struct megasas_cmd_fusion *cmd) 3032 { 3033 int sge_count; 3034 u8 cmd_type; 3035 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; 3036 struct MR_PRIV_DEVICE *mr_device_priv_data; 3037 mr_device_priv_data = scp->device->hostdata; 3038 3039 /* Zero out some fields so they don't get reused */ 3040 memset(io_request->LUN, 0x0, 8); 3041 io_request->CDB.EEDP32.PrimaryReferenceTag = 0; 3042 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; 3043 io_request->EEDPFlags = 0; 3044 io_request->Control = 0; 3045 io_request->EEDPBlockSize = 0; 3046 io_request->ChainOffset = 0; 3047 io_request->RaidContext.raid_context.raid_flags = 0; 3048 io_request->RaidContext.raid_context.type = 0; 3049 io_request->RaidContext.raid_context.nseg = 0; 3050 3051 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); 3052 /* 3053 * Just the CDB length,rest of the Flags are zero 3054 * This will be modified for FP in build_ldio_fusion 3055 */ 3056 io_request->IoFlags = cpu_to_le16(scp->cmd_len); 3057 3058 switch (cmd_type = megasas_cmd_type(scp)) { 3059 case READ_WRITE_LDIO: 3060 megasas_build_ldio_fusion(instance, scp, cmd); 3061 break; 3062 case NON_READ_WRITE_LDIO: 3063 megasas_build_ld_nonrw_fusion(instance, scp, cmd); 3064 break; 3065 case READ_WRITE_SYSPDIO: 3066 megasas_build_syspd_fusion(instance, scp, cmd, true); 3067 break; 3068 case NON_READ_WRITE_SYSPDIO: 3069 if (instance->secure_jbod_support || 3070 mr_device_priv_data->is_tm_capable) 3071 megasas_build_syspd_fusion(instance, scp, cmd, false); 3072 else 3073 megasas_build_syspd_fusion(instance, scp, cmd, true); 3074 break; 3075 default: 3076 break; 3077 } 3078 3079 /* 3080 * Construct SGL 3081 */ 3082 3083 sge_count = megasas_make_sgl(instance, scp, cmd); 3084 3085 if (sge_count > instance->max_num_sge || (sge_count < 0)) { 3086 dev_err(&instance->pdev->dev, 3087 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", 3088 __func__, __LINE__, sge_count, instance->max_num_sge); 3089 return 1; 3090 } 3091 3092 if (instance->adapter_type == VENTURA_SERIES) { 3093 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); 3094 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); 3095 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); 3096 } else { 3097 /* numSGE store lower 8 bit of sge_count. 3098 * numSGEExt store higher 8 bit of sge_count 3099 */ 3100 io_request->RaidContext.raid_context.num_sge = sge_count; 3101 io_request->RaidContext.raid_context.num_sge_ext = 3102 (u8)(sge_count >> 8); 3103 } 3104 3105 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); 3106 3107 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 3108 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); 3109 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 3110 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); 3111 3112 io_request->SGLOffset0 = 3113 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; 3114 3115 io_request->SenseBufferLowAddress = 3116 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 3117 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 3118 3119 cmd->scmd = scp; 3120 scp->SCp.ptr = (char *)cmd; 3121 3122 return 0; 3123 } 3124 3125 static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3126 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) 3127 { 3128 u8 *p; 3129 struct fusion_context *fusion; 3130 3131 fusion = instance->ctrl_context; 3132 p = fusion->req_frames_desc + 3133 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; 3134 3135 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; 3136 } 3137 3138 3139 /* megasas_prepate_secondRaid1_IO 3140 * It prepares the raid 1 second IO 3141 */ 3142 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, 3143 struct megasas_cmd_fusion *cmd, 3144 struct megasas_cmd_fusion *r1_cmd) 3145 { 3146 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; 3147 struct fusion_context *fusion; 3148 fusion = instance->ctrl_context; 3149 req_desc = cmd->request_desc; 3150 /* copy the io request frame as well as 8 SGEs data for r1 command*/ 3151 memcpy(r1_cmd->io_request, cmd->io_request, 3152 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); 3153 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL, 3154 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); 3155 /*sense buffer is different for r1 command*/ 3156 r1_cmd->io_request->SenseBufferLowAddress = 3157 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr)); 3158 r1_cmd->scmd = cmd->scmd; 3159 req_desc2 = megasas_get_request_descriptor(instance, 3160 (r1_cmd->index - 1)); 3161 req_desc2->Words = 0; 3162 r1_cmd->request_desc = req_desc2; 3163 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); 3164 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; 3165 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; 3166 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; 3167 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; 3168 cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3169 cpu_to_le16(r1_cmd->index); 3170 r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3171 cpu_to_le16(cmd->index); 3172 /*MSIxIndex of both commands request descriptors should be same*/ 3173 r1_cmd->request_desc->SCSIIO.MSIxIndex = 3174 cmd->request_desc->SCSIIO.MSIxIndex; 3175 /*span arm is different for r1 cmd*/ 3176 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = 3177 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; 3178 } 3179 3180 /** 3181 * megasas_build_and_issue_cmd_fusion -Main routine for building and 3182 * issuing non IOCTL cmd 3183 * @instance: Adapter soft state 3184 * @scmd: pointer to scsi cmd from OS 3185 */ 3186 static u32 3187 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, 3188 struct scsi_cmnd *scmd) 3189 { 3190 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL; 3191 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3192 u32 index; 3193 struct fusion_context *fusion; 3194 3195 fusion = instance->ctrl_context; 3196 3197 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && 3198 instance->ldio_threshold && 3199 (atomic_inc_return(&instance->ldio_outstanding) > 3200 instance->ldio_threshold)) { 3201 atomic_dec(&instance->ldio_outstanding); 3202 return SCSI_MLQUEUE_DEVICE_BUSY; 3203 } 3204 3205 if (atomic_inc_return(&instance->fw_outstanding) > 3206 instance->host->can_queue) { 3207 atomic_dec(&instance->fw_outstanding); 3208 return SCSI_MLQUEUE_HOST_BUSY; 3209 } 3210 3211 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag); 3212 3213 if (!cmd) { 3214 atomic_dec(&instance->fw_outstanding); 3215 return SCSI_MLQUEUE_HOST_BUSY; 3216 } 3217 3218 index = cmd->index; 3219 3220 req_desc = megasas_get_request_descriptor(instance, index-1); 3221 3222 req_desc->Words = 0; 3223 cmd->request_desc = req_desc; 3224 3225 if (megasas_build_io_fusion(instance, scmd, cmd)) { 3226 megasas_return_cmd_fusion(instance, cmd); 3227 dev_err(&instance->pdev->dev, "Error building command\n"); 3228 cmd->request_desc = NULL; 3229 atomic_dec(&instance->fw_outstanding); 3230 return SCSI_MLQUEUE_HOST_BUSY; 3231 } 3232 3233 req_desc = cmd->request_desc; 3234 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3235 3236 if (cmd->io_request->ChainOffset != 0 && 3237 cmd->io_request->ChainOffset != 0xF) 3238 dev_err(&instance->pdev->dev, "The chain offset value is not " 3239 "correct : %x\n", cmd->io_request->ChainOffset); 3240 /* 3241 * if it is raid 1/10 fp write capable. 3242 * try to get second command from pool and construct it. 3243 * From FW, it has confirmed that lba values of two PDs 3244 * corresponds to single R1/10 LD are always same 3245 * 3246 */ 3247 /* driver side count always should be less than max_fw_cmds 3248 * to get new command 3249 */ 3250 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 3251 r1_cmd = megasas_get_cmd_fusion(instance, 3252 (scmd->request->tag + instance->max_fw_cmds)); 3253 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); 3254 } 3255 3256 3257 /* 3258 * Issue the command to the FW 3259 */ 3260 3261 megasas_fire_cmd_fusion(instance, req_desc); 3262 3263 if (r1_cmd) 3264 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); 3265 3266 3267 return 0; 3268 } 3269 3270 /** 3271 * megasas_complete_r1_command - 3272 * completes R1 FP write commands which has valid peer smid 3273 * @instance: Adapter soft state 3274 * @cmd_fusion: MPT command frame 3275 * 3276 */ 3277 static inline void 3278 megasas_complete_r1_command(struct megasas_instance *instance, 3279 struct megasas_cmd_fusion *cmd) 3280 { 3281 u8 *sense, status, ex_status; 3282 u32 data_length; 3283 u16 peer_smid; 3284 struct fusion_context *fusion; 3285 struct megasas_cmd_fusion *r1_cmd = NULL; 3286 struct scsi_cmnd *scmd_local = NULL; 3287 struct RAID_CONTEXT_G35 *rctx_g35; 3288 3289 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; 3290 fusion = instance->ctrl_context; 3291 peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid); 3292 3293 r1_cmd = fusion->cmd_list[peer_smid - 1]; 3294 scmd_local = cmd->scmd; 3295 status = rctx_g35->status; 3296 ex_status = rctx_g35->ex_status; 3297 data_length = cmd->io_request->DataLength; 3298 sense = cmd->sense; 3299 3300 cmd->cmd_completed = true; 3301 3302 /* Check if peer command is completed or not*/ 3303 if (r1_cmd->cmd_completed) { 3304 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; 3305 if (rctx_g35->status != MFI_STAT_OK) { 3306 status = rctx_g35->status; 3307 ex_status = rctx_g35->ex_status; 3308 data_length = r1_cmd->io_request->DataLength; 3309 sense = r1_cmd->sense; 3310 } 3311 3312 megasas_return_cmd_fusion(instance, r1_cmd); 3313 map_cmd_status(fusion, scmd_local, status, ex_status, 3314 le32_to_cpu(data_length), sense); 3315 if (instance->ldio_threshold && 3316 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 3317 atomic_dec(&instance->ldio_outstanding); 3318 scmd_local->SCp.ptr = NULL; 3319 megasas_return_cmd_fusion(instance, cmd); 3320 scsi_dma_unmap(scmd_local); 3321 scmd_local->scsi_done(scmd_local); 3322 } 3323 } 3324 3325 /** 3326 * complete_cmd_fusion - Completes command 3327 * @instance: Adapter soft state 3328 * Completes all commands that is in reply descriptor queue 3329 */ 3330 int 3331 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) 3332 { 3333 union MPI2_REPLY_DESCRIPTORS_UNION *desc; 3334 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; 3335 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 3336 struct fusion_context *fusion; 3337 struct megasas_cmd *cmd_mfi; 3338 struct megasas_cmd_fusion *cmd_fusion; 3339 u16 smid, num_completed; 3340 u8 reply_descript_type, *sense, status, extStatus; 3341 u32 device_id, data_length; 3342 union desc_value d_val; 3343 struct LD_LOAD_BALANCE_INFO *lbinfo; 3344 int threshold_reply_count = 0; 3345 struct scsi_cmnd *scmd_local = NULL; 3346 struct MR_TASK_MANAGE_REQUEST *mr_tm_req; 3347 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; 3348 3349 fusion = instance->ctrl_context; 3350 3351 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3352 return IRQ_HANDLED; 3353 3354 desc = fusion->reply_frames_desc[MSIxIndex] + 3355 fusion->last_reply_idx[MSIxIndex]; 3356 3357 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3358 3359 d_val.word = desc->Words; 3360 3361 reply_descript_type = reply_desc->ReplyFlags & 3362 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3363 3364 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3365 return IRQ_NONE; 3366 3367 num_completed = 0; 3368 3369 while (d_val.u.low != cpu_to_le32(UINT_MAX) && 3370 d_val.u.high != cpu_to_le32(UINT_MAX)) { 3371 3372 smid = le16_to_cpu(reply_desc->SMID); 3373 cmd_fusion = fusion->cmd_list[smid - 1]; 3374 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 3375 cmd_fusion->io_request; 3376 3377 scmd_local = cmd_fusion->scmd; 3378 status = scsi_io_req->RaidContext.raid_context.status; 3379 extStatus = scsi_io_req->RaidContext.raid_context.ex_status; 3380 sense = cmd_fusion->sense; 3381 data_length = scsi_io_req->DataLength; 3382 3383 switch (scsi_io_req->Function) { 3384 case MPI2_FUNCTION_SCSI_TASK_MGMT: 3385 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) 3386 cmd_fusion->io_request; 3387 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) 3388 &mr_tm_req->TmRequest; 3389 dev_dbg(&instance->pdev->dev, "TM completion:" 3390 "type: 0x%x TaskMID: 0x%x\n", 3391 mpi_tm_req->TaskType, mpi_tm_req->TaskMID); 3392 complete(&cmd_fusion->done); 3393 break; 3394 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ 3395 /* Update load balancing info */ 3396 if (fusion->load_balance_info && 3397 (cmd_fusion->scmd->SCp.Status & 3398 MEGASAS_LOAD_BALANCE_FLAG)) { 3399 device_id = MEGASAS_DEV_INDEX(scmd_local); 3400 lbinfo = &fusion->load_balance_info[device_id]; 3401 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); 3402 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 3403 } 3404 //Fall thru and complete IO 3405 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ 3406 atomic_dec(&instance->fw_outstanding); 3407 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { 3408 map_cmd_status(fusion, scmd_local, status, 3409 extStatus, le32_to_cpu(data_length), 3410 sense); 3411 if (instance->ldio_threshold && 3412 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) 3413 atomic_dec(&instance->ldio_outstanding); 3414 scmd_local->SCp.ptr = NULL; 3415 megasas_return_cmd_fusion(instance, cmd_fusion); 3416 scsi_dma_unmap(scmd_local); 3417 scmd_local->scsi_done(scmd_local); 3418 } else /* Optimal VD - R1 FP command completion. */ 3419 megasas_complete_r1_command(instance, cmd_fusion); 3420 break; 3421 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ 3422 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3423 /* Poll mode. Dummy free. 3424 * In case of Interrupt mode, caller has reverse check. 3425 */ 3426 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 3427 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 3428 megasas_return_cmd(instance, cmd_mfi); 3429 } else 3430 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3431 break; 3432 } 3433 3434 fusion->last_reply_idx[MSIxIndex]++; 3435 if (fusion->last_reply_idx[MSIxIndex] >= 3436 fusion->reply_q_depth) 3437 fusion->last_reply_idx[MSIxIndex] = 0; 3438 3439 desc->Words = cpu_to_le64(ULLONG_MAX); 3440 num_completed++; 3441 threshold_reply_count++; 3442 3443 /* Get the next reply descriptor */ 3444 if (!fusion->last_reply_idx[MSIxIndex]) 3445 desc = fusion->reply_frames_desc[MSIxIndex]; 3446 else 3447 desc++; 3448 3449 reply_desc = 3450 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3451 3452 d_val.word = desc->Words; 3453 3454 reply_descript_type = reply_desc->ReplyFlags & 3455 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3456 3457 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3458 break; 3459 /* 3460 * Write to reply post host index register after completing threshold 3461 * number of reply counts and still there are more replies in reply queue 3462 * pending to be completed 3463 */ 3464 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) { 3465 if (instance->msix_combined) 3466 writel(((MSIxIndex & 0x7) << 24) | 3467 fusion->last_reply_idx[MSIxIndex], 3468 instance->reply_post_host_index_addr[MSIxIndex/8]); 3469 else 3470 writel((MSIxIndex << 24) | 3471 fusion->last_reply_idx[MSIxIndex], 3472 instance->reply_post_host_index_addr[0]); 3473 threshold_reply_count = 0; 3474 } 3475 } 3476 3477 if (!num_completed) 3478 return IRQ_NONE; 3479 3480 wmb(); 3481 if (instance->msix_combined) 3482 writel(((MSIxIndex & 0x7) << 24) | 3483 fusion->last_reply_idx[MSIxIndex], 3484 instance->reply_post_host_index_addr[MSIxIndex/8]); 3485 else 3486 writel((MSIxIndex << 24) | 3487 fusion->last_reply_idx[MSIxIndex], 3488 instance->reply_post_host_index_addr[0]); 3489 megasas_check_and_restore_queue_depth(instance); 3490 return IRQ_HANDLED; 3491 } 3492 3493 /** 3494 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter 3495 * @instance: Adapter soft state 3496 */ 3497 void megasas_sync_irqs(unsigned long instance_addr) 3498 { 3499 u32 count, i; 3500 struct megasas_instance *instance = 3501 (struct megasas_instance *)instance_addr; 3502 3503 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3504 3505 for (i = 0; i < count; i++) 3506 synchronize_irq(pci_irq_vector(instance->pdev, i)); 3507 } 3508 3509 /** 3510 * megasas_complete_cmd_dpc_fusion - Completes command 3511 * @instance: Adapter soft state 3512 * 3513 * Tasklet to complete cmds 3514 */ 3515 void 3516 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) 3517 { 3518 struct megasas_instance *instance = 3519 (struct megasas_instance *)instance_addr; 3520 unsigned long flags; 3521 u32 count, MSIxIndex; 3522 3523 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3524 3525 /* If we have already declared adapter dead, donot complete cmds */ 3526 spin_lock_irqsave(&instance->hba_lock, flags); 3527 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 3528 spin_unlock_irqrestore(&instance->hba_lock, flags); 3529 return; 3530 } 3531 spin_unlock_irqrestore(&instance->hba_lock, flags); 3532 3533 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) 3534 complete_cmd_fusion(instance, MSIxIndex); 3535 } 3536 3537 /** 3538 * megasas_isr_fusion - isr entry point 3539 */ 3540 irqreturn_t megasas_isr_fusion(int irq, void *devp) 3541 { 3542 struct megasas_irq_context *irq_context = devp; 3543 struct megasas_instance *instance = irq_context->instance; 3544 u32 mfiStatus, fw_state, dma_state; 3545 3546 if (instance->mask_interrupts) 3547 return IRQ_NONE; 3548 3549 if (!instance->msix_vectors) { 3550 mfiStatus = instance->instancet->clear_intr(instance->reg_set); 3551 if (!mfiStatus) 3552 return IRQ_NONE; 3553 } 3554 3555 /* If we are resetting, bail */ 3556 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { 3557 instance->instancet->clear_intr(instance->reg_set); 3558 return IRQ_HANDLED; 3559 } 3560 3561 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) { 3562 instance->instancet->clear_intr(instance->reg_set); 3563 /* If we didn't complete any commands, check for FW fault */ 3564 fw_state = instance->instancet->read_fw_status_reg( 3565 instance->reg_set) & MFI_STATE_MASK; 3566 dma_state = instance->instancet->read_fw_status_reg 3567 (instance->reg_set) & MFI_STATE_DMADONE; 3568 if (instance->crash_dump_drv_support && 3569 instance->crash_dump_app_support) { 3570 /* Start collecting crash, if DMA bit is done */ 3571 if ((fw_state == MFI_STATE_FAULT) && dma_state) 3572 schedule_work(&instance->crash_init); 3573 else if (fw_state == MFI_STATE_FAULT) { 3574 if (instance->unload == 0) 3575 schedule_work(&instance->work_init); 3576 } 3577 } else if (fw_state == MFI_STATE_FAULT) { 3578 dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt" 3579 "for scsi%d\n", instance->host->host_no); 3580 if (instance->unload == 0) 3581 schedule_work(&instance->work_init); 3582 } 3583 } 3584 3585 return IRQ_HANDLED; 3586 } 3587 3588 /** 3589 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru 3590 * @instance: Adapter soft state 3591 * mfi_cmd: megasas_cmd pointer 3592 * 3593 */ 3594 void 3595 build_mpt_mfi_pass_thru(struct megasas_instance *instance, 3596 struct megasas_cmd *mfi_cmd) 3597 { 3598 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; 3599 struct MPI2_RAID_SCSI_IO_REQUEST *io_req; 3600 struct megasas_cmd_fusion *cmd; 3601 struct fusion_context *fusion; 3602 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; 3603 3604 fusion = instance->ctrl_context; 3605 3606 cmd = megasas_get_cmd_fusion(instance, 3607 instance->max_scsi_cmds + mfi_cmd->index); 3608 3609 /* Save the smid. To be used for returning the cmd */ 3610 mfi_cmd->context.smid = cmd->index; 3611 3612 /* 3613 * For cmds where the flag is set, store the flag and check 3614 * on completion. For cmds with this flag, don't call 3615 * megasas_complete_cmd 3616 */ 3617 3618 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) 3619 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; 3620 3621 io_req = cmd->io_request; 3622 3623 if (instance->adapter_type >= INVADER_SERIES) { 3624 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = 3625 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; 3626 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 3627 sgl_ptr_end->Flags = 0; 3628 } 3629 3630 mpi25_ieee_chain = 3631 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; 3632 3633 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; 3634 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, 3635 SGL) / 4; 3636 io_req->ChainOffset = fusion->chain_offset_mfi_pthru; 3637 3638 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); 3639 3640 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 3641 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; 3642 3643 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size); 3644 } 3645 3646 /** 3647 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd 3648 * @instance: Adapter soft state 3649 * @cmd: mfi cmd to build 3650 * 3651 */ 3652 union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3653 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 3654 { 3655 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; 3656 u16 index; 3657 3658 build_mpt_mfi_pass_thru(instance, cmd); 3659 index = cmd->context.smid; 3660 3661 req_desc = megasas_get_request_descriptor(instance, index - 1); 3662 3663 req_desc->Words = 0; 3664 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3665 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3666 3667 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3668 3669 return req_desc; 3670 } 3671 3672 /** 3673 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd 3674 * @instance: Adapter soft state 3675 * @cmd: mfi cmd pointer 3676 * 3677 */ 3678 void 3679 megasas_issue_dcmd_fusion(struct megasas_instance *instance, 3680 struct megasas_cmd *cmd) 3681 { 3682 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3683 3684 req_desc = build_mpt_cmd(instance, cmd); 3685 3686 megasas_fire_cmd_fusion(instance, req_desc); 3687 return; 3688 } 3689 3690 /** 3691 * megasas_release_fusion - Reverses the FW initialization 3692 * @instance: Adapter soft state 3693 */ 3694 void 3695 megasas_release_fusion(struct megasas_instance *instance) 3696 { 3697 megasas_free_ioc_init_cmd(instance); 3698 megasas_free_cmds(instance); 3699 megasas_free_cmds_fusion(instance); 3700 3701 iounmap(instance->reg_set); 3702 3703 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 3704 } 3705 3706 /** 3707 * megasas_read_fw_status_reg_fusion - returns the current FW status value 3708 * @regs: MFI register set 3709 */ 3710 static u32 3711 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs) 3712 { 3713 return readl(&(regs)->outbound_scratch_pad); 3714 } 3715 3716 /** 3717 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3718 * @instance: Controller's soft instance 3719 * return: Number of allocated host crash buffers 3720 */ 3721 static void 3722 megasas_alloc_host_crash_buffer(struct megasas_instance *instance) 3723 { 3724 unsigned int i; 3725 3726 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { 3727 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); 3728 if (!instance->crash_buf[i]) { 3729 dev_info(&instance->pdev->dev, "Firmware crash dump " 3730 "memory allocation failed at index %d\n", i); 3731 break; 3732 } 3733 } 3734 instance->drv_buf_alloc = i; 3735 } 3736 3737 /** 3738 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3739 * @instance: Controller's soft instance 3740 */ 3741 void 3742 megasas_free_host_crash_buffer(struct megasas_instance *instance) 3743 { 3744 unsigned int i; 3745 for (i = 0; i < instance->drv_buf_alloc; i++) { 3746 if (instance->crash_buf[i]) 3747 vfree(instance->crash_buf[i]); 3748 } 3749 instance->drv_buf_index = 0; 3750 instance->drv_buf_alloc = 0; 3751 instance->fw_crash_state = UNAVAILABLE; 3752 instance->fw_crash_buffer_size = 0; 3753 } 3754 3755 /** 3756 * megasas_adp_reset_fusion - For controller reset 3757 * @regs: MFI register set 3758 */ 3759 static int 3760 megasas_adp_reset_fusion(struct megasas_instance *instance, 3761 struct megasas_register_set __iomem *regs) 3762 { 3763 u32 host_diag, abs_state, retry; 3764 3765 /* Now try to reset the chip */ 3766 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3767 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3768 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3769 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3770 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3771 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3772 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3773 3774 /* Check that the diag write enable (DRWE) bit is on */ 3775 host_diag = readl(&instance->reg_set->fusion_host_diag); 3776 retry = 0; 3777 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { 3778 msleep(100); 3779 host_diag = readl(&instance->reg_set->fusion_host_diag); 3780 if (retry++ == 100) { 3781 dev_warn(&instance->pdev->dev, 3782 "Host diag unlock failed from %s %d\n", 3783 __func__, __LINE__); 3784 break; 3785 } 3786 } 3787 if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) 3788 return -1; 3789 3790 /* Send chip reset command */ 3791 writel(host_diag | HOST_DIAG_RESET_ADAPTER, 3792 &instance->reg_set->fusion_host_diag); 3793 msleep(3000); 3794 3795 /* Make sure reset adapter bit is cleared */ 3796 host_diag = readl(&instance->reg_set->fusion_host_diag); 3797 retry = 0; 3798 while (host_diag & HOST_DIAG_RESET_ADAPTER) { 3799 msleep(100); 3800 host_diag = readl(&instance->reg_set->fusion_host_diag); 3801 if (retry++ == 1000) { 3802 dev_warn(&instance->pdev->dev, 3803 "Diag reset adapter never cleared %s %d\n", 3804 __func__, __LINE__); 3805 break; 3806 } 3807 } 3808 if (host_diag & HOST_DIAG_RESET_ADAPTER) 3809 return -1; 3810 3811 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set) 3812 & MFI_STATE_MASK; 3813 retry = 0; 3814 3815 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { 3816 msleep(100); 3817 abs_state = instance->instancet-> 3818 read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 3819 } 3820 if (abs_state <= MFI_STATE_FW_INIT) { 3821 dev_warn(&instance->pdev->dev, 3822 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", 3823 abs_state, __func__, __LINE__); 3824 return -1; 3825 } 3826 3827 return 0; 3828 } 3829 3830 /** 3831 * megasas_check_reset_fusion - For controller reset check 3832 * @regs: MFI register set 3833 */ 3834 static int 3835 megasas_check_reset_fusion(struct megasas_instance *instance, 3836 struct megasas_register_set __iomem *regs) 3837 { 3838 return 0; 3839 } 3840 3841 /* This function waits for outstanding commands on fusion to complete */ 3842 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, 3843 int reason, int *convert) 3844 { 3845 int i, outstanding, retval = 0, hb_seconds_missed = 0; 3846 u32 fw_state; 3847 3848 for (i = 0; i < resetwaittime; i++) { 3849 /* Check if firmware is in fault state */ 3850 fw_state = instance->instancet->read_fw_status_reg( 3851 instance->reg_set) & MFI_STATE_MASK; 3852 if (fw_state == MFI_STATE_FAULT) { 3853 dev_warn(&instance->pdev->dev, "Found FW in FAULT state," 3854 " will reset adapter scsi%d.\n", 3855 instance->host->host_no); 3856 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3857 if (instance->requestorId && reason) { 3858 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" 3859 " state while polling during" 3860 " I/O timeout handling for %d\n", 3861 instance->host->host_no); 3862 *convert = 1; 3863 } 3864 3865 retval = 1; 3866 goto out; 3867 } 3868 3869 if (reason == MFI_IO_TIMEOUT_OCR) { 3870 dev_info(&instance->pdev->dev, 3871 "MFI IO is timed out, initiating OCR\n"); 3872 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3873 retval = 1; 3874 goto out; 3875 } 3876 3877 /* If SR-IOV VF mode & heartbeat timeout, don't wait */ 3878 if (instance->requestorId && !reason) { 3879 retval = 1; 3880 goto out; 3881 } 3882 3883 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ 3884 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) { 3885 if (instance->hb_host_mem->HB.fwCounter != 3886 instance->hb_host_mem->HB.driverCounter) { 3887 instance->hb_host_mem->HB.driverCounter = 3888 instance->hb_host_mem->HB.fwCounter; 3889 hb_seconds_missed = 0; 3890 } else { 3891 hb_seconds_missed++; 3892 if (hb_seconds_missed == 3893 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { 3894 dev_warn(&instance->pdev->dev, "SR-IOV:" 3895 " Heartbeat never completed " 3896 " while polling during I/O " 3897 " timeout handling for " 3898 "scsi%d.\n", 3899 instance->host->host_no); 3900 *convert = 1; 3901 retval = 1; 3902 goto out; 3903 } 3904 } 3905 } 3906 3907 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3908 outstanding = atomic_read(&instance->fw_outstanding); 3909 if (!outstanding) 3910 goto out; 3911 3912 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 3913 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 3914 "commands to complete for scsi%d\n", i, 3915 outstanding, instance->host->host_no); 3916 } 3917 msleep(1000); 3918 } 3919 3920 if (atomic_read(&instance->fw_outstanding)) { 3921 dev_err(&instance->pdev->dev, "pending commands remain after waiting, " 3922 "will reset adapter scsi%d.\n", 3923 instance->host->host_no); 3924 *convert = 1; 3925 retval = 1; 3926 } 3927 out: 3928 return retval; 3929 } 3930 3931 void megasas_reset_reply_desc(struct megasas_instance *instance) 3932 { 3933 int i, j, count; 3934 struct fusion_context *fusion; 3935 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 3936 3937 fusion = instance->ctrl_context; 3938 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3939 for (i = 0 ; i < count ; i++) { 3940 fusion->last_reply_idx[i] = 0; 3941 reply_desc = fusion->reply_frames_desc[i]; 3942 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) 3943 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 3944 } 3945 } 3946 3947 /* 3948 * megasas_refire_mgmt_cmd : Re-fire management commands 3949 * @instance: Controller's soft instance 3950 */ 3951 void megasas_refire_mgmt_cmd(struct megasas_instance *instance) 3952 { 3953 int j; 3954 struct megasas_cmd_fusion *cmd_fusion; 3955 struct fusion_context *fusion; 3956 struct megasas_cmd *cmd_mfi; 3957 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3958 u16 smid; 3959 bool refire_cmd = 0; 3960 u8 result; 3961 u32 opcode = 0; 3962 3963 fusion = instance->ctrl_context; 3964 3965 /* Re-fire management commands. 3966 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. 3967 */ 3968 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { 3969 cmd_fusion = fusion->cmd_list[j]; 3970 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3971 smid = le16_to_cpu(cmd_mfi->context.smid); 3972 result = REFIRE_CMD; 3973 3974 if (!smid) 3975 continue; 3976 3977 req_desc = megasas_get_request_descriptor(instance, smid - 1); 3978 3979 switch (cmd_mfi->frame->hdr.cmd) { 3980 case MFI_CMD_DCMD: 3981 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode); 3982 /* Do not refire shutdown command */ 3983 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 3984 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; 3985 result = COMPLETE_CMD; 3986 break; 3987 } 3988 3989 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) && 3990 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3991 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); 3992 3993 if (!refire_cmd) 3994 result = RETURN_CMD; 3995 3996 break; 3997 case MFI_CMD_NVME: 3998 if (!instance->support_nvme_passthru) { 3999 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 4000 result = COMPLETE_CMD; 4001 } 4002 4003 break; 4004 default: 4005 break; 4006 } 4007 4008 switch (result) { 4009 case REFIRE_CMD: 4010 megasas_fire_cmd_fusion(instance, req_desc); 4011 break; 4012 case RETURN_CMD: 4013 megasas_return_cmd(instance, cmd_mfi); 4014 break; 4015 case COMPLETE_CMD: 4016 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 4017 break; 4018 } 4019 } 4020 } 4021 4022 /* 4023 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device 4024 * @instance: per adapter struct 4025 * @channel: the channel assigned by the OS 4026 * @id: the id assigned by the OS 4027 * 4028 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED 4029 */ 4030 4031 static int megasas_track_scsiio(struct megasas_instance *instance, 4032 int id, int channel) 4033 { 4034 int i, found = 0; 4035 struct megasas_cmd_fusion *cmd_fusion; 4036 struct fusion_context *fusion; 4037 fusion = instance->ctrl_context; 4038 4039 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4040 cmd_fusion = fusion->cmd_list[i]; 4041 if (cmd_fusion->scmd && 4042 (cmd_fusion->scmd->device->id == id && 4043 cmd_fusion->scmd->device->channel == channel)) { 4044 dev_info(&instance->pdev->dev, 4045 "SCSI commands pending to target" 4046 "channel %d id %d \tSMID: 0x%x\n", 4047 channel, id, cmd_fusion->index); 4048 scsi_print_command(cmd_fusion->scmd); 4049 found = 1; 4050 break; 4051 } 4052 } 4053 4054 return found ? FAILED : SUCCESS; 4055 } 4056 4057 /** 4058 * megasas_tm_response_code - translation of device response code 4059 * @ioc: per adapter object 4060 * @mpi_reply: MPI reply returned by firmware 4061 * 4062 * Return nothing. 4063 */ 4064 static void 4065 megasas_tm_response_code(struct megasas_instance *instance, 4066 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) 4067 { 4068 char *desc; 4069 4070 switch (mpi_reply->ResponseCode) { 4071 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: 4072 desc = "task management request completed"; 4073 break; 4074 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: 4075 desc = "invalid frame"; 4076 break; 4077 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: 4078 desc = "task management request not supported"; 4079 break; 4080 case MPI2_SCSITASKMGMT_RSP_TM_FAILED: 4081 desc = "task management request failed"; 4082 break; 4083 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: 4084 desc = "task management request succeeded"; 4085 break; 4086 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: 4087 desc = "invalid lun"; 4088 break; 4089 case 0xA: 4090 desc = "overlapped tag attempted"; 4091 break; 4092 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: 4093 desc = "task queued, however not sent to target"; 4094 break; 4095 default: 4096 desc = "unknown"; 4097 break; 4098 } 4099 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", 4100 mpi_reply->ResponseCode, desc); 4101 dev_dbg(&instance->pdev->dev, 4102 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" 4103 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", 4104 mpi_reply->TerminationCount, mpi_reply->DevHandle, 4105 mpi_reply->Function, mpi_reply->TaskType, 4106 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); 4107 } 4108 4109 /** 4110 * megasas_issue_tm - main routine for sending tm requests 4111 * @instance: per adapter struct 4112 * @device_handle: device handle 4113 * @channel: the channel assigned by the OS 4114 * @id: the id assigned by the OS 4115 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) 4116 * @smid_task: smid assigned to the task 4117 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF 4118 * Context: user 4119 * 4120 * MegaRaid use MPT interface for Task Magement request. 4121 * A generic API for sending task management requests to firmware. 4122 * 4123 * Return SUCCESS or FAILED. 4124 */ 4125 static int 4126 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, 4127 uint channel, uint id, u16 smid_task, u8 type) 4128 { 4129 struct MR_TASK_MANAGE_REQUEST *mr_request; 4130 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; 4131 unsigned long timeleft; 4132 struct megasas_cmd_fusion *cmd_fusion; 4133 struct megasas_cmd *cmd_mfi; 4134 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4135 struct fusion_context *fusion = NULL; 4136 struct megasas_cmd_fusion *scsi_lookup; 4137 int rc; 4138 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; 4139 4140 fusion = instance->ctrl_context; 4141 4142 cmd_mfi = megasas_get_cmd(instance); 4143 4144 if (!cmd_mfi) { 4145 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4146 __func__, __LINE__); 4147 return -ENOMEM; 4148 } 4149 4150 cmd_fusion = megasas_get_cmd_fusion(instance, 4151 instance->max_scsi_cmds + cmd_mfi->index); 4152 4153 /* Save the smid. To be used for returning the cmd */ 4154 cmd_mfi->context.smid = cmd_fusion->index; 4155 4156 req_desc = megasas_get_request_descriptor(instance, 4157 (cmd_fusion->index - 1)); 4158 4159 cmd_fusion->request_desc = req_desc; 4160 req_desc->Words = 0; 4161 4162 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; 4163 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); 4164 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; 4165 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 4166 mpi_request->DevHandle = cpu_to_le16(device_handle); 4167 mpi_request->TaskType = type; 4168 mpi_request->TaskMID = cpu_to_le16(smid_task); 4169 mpi_request->LUN[1] = 0; 4170 4171 4172 req_desc = cmd_fusion->request_desc; 4173 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); 4174 req_desc->HighPriority.RequestFlags = 4175 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << 4176 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 4177 req_desc->HighPriority.MSIxIndex = 0; 4178 req_desc->HighPriority.LMID = 0; 4179 req_desc->HighPriority.Reserved1 = 0; 4180 4181 if (channel < MEGASAS_MAX_PD_CHANNELS) 4182 mr_request->tmReqFlags.isTMForPD = 1; 4183 else 4184 mr_request->tmReqFlags.isTMForLD = 1; 4185 4186 init_completion(&cmd_fusion->done); 4187 megasas_fire_cmd_fusion(instance, req_desc); 4188 4189 timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ); 4190 4191 if (!timeleft) { 4192 dev_err(&instance->pdev->dev, 4193 "task mgmt type 0x%x timed out\n", type); 4194 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE; 4195 mutex_unlock(&instance->reset_mutex); 4196 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); 4197 mutex_lock(&instance->reset_mutex); 4198 return rc; 4199 } 4200 4201 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; 4202 megasas_tm_response_code(instance, mpi_reply); 4203 4204 megasas_return_cmd(instance, cmd_mfi); 4205 rc = SUCCESS; 4206 switch (type) { 4207 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4208 scsi_lookup = fusion->cmd_list[smid_task - 1]; 4209 4210 if (scsi_lookup->scmd == NULL) 4211 break; 4212 else { 4213 instance->instancet->disable_intr(instance); 4214 megasas_sync_irqs((unsigned long)instance); 4215 instance->instancet->enable_intr(instance); 4216 if (scsi_lookup->scmd == NULL) 4217 break; 4218 } 4219 rc = FAILED; 4220 break; 4221 4222 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4223 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) 4224 break; 4225 instance->instancet->disable_intr(instance); 4226 megasas_sync_irqs((unsigned long)instance); 4227 rc = megasas_track_scsiio(instance, id, channel); 4228 instance->instancet->enable_intr(instance); 4229 4230 break; 4231 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: 4232 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: 4233 break; 4234 default: 4235 rc = FAILED; 4236 break; 4237 } 4238 4239 return rc; 4240 4241 } 4242 4243 /* 4244 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI 4245 * @instance: per adapter struct 4246 * 4247 * Return Non Zero index, if SMID found in outstanding commands 4248 */ 4249 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) 4250 { 4251 int i, ret = 0; 4252 struct megasas_instance *instance; 4253 struct megasas_cmd_fusion *cmd_fusion; 4254 struct fusion_context *fusion; 4255 4256 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4257 4258 fusion = instance->ctrl_context; 4259 4260 for (i = 0; i < instance->max_scsi_cmds; i++) { 4261 cmd_fusion = fusion->cmd_list[i]; 4262 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { 4263 scmd_printk(KERN_NOTICE, scmd, "Abort request is for" 4264 " SMID: %d\n", cmd_fusion->index); 4265 ret = cmd_fusion->index; 4266 break; 4267 } 4268 } 4269 4270 return ret; 4271 } 4272 4273 /* 4274 * megasas_get_tm_devhandle - Get devhandle for TM request 4275 * @sdev- OS provided scsi device 4276 * 4277 * Returns- devhandle/targetID of SCSI device 4278 */ 4279 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) 4280 { 4281 u16 pd_index = 0; 4282 u32 device_id; 4283 struct megasas_instance *instance; 4284 struct fusion_context *fusion; 4285 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 4286 u16 devhandle = (u16)ULONG_MAX; 4287 4288 instance = (struct megasas_instance *)sdev->host->hostdata; 4289 fusion = instance->ctrl_context; 4290 4291 if (!MEGASAS_IS_LOGICAL(sdev)) { 4292 if (instance->use_seqnum_jbod_fp) { 4293 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) 4294 + sdev->id; 4295 pd_sync = (void *)fusion->pd_seq_sync 4296 [(instance->pd_seq_map_id - 1) & 1]; 4297 devhandle = pd_sync->seq[pd_index].devHandle; 4298 } else 4299 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" 4300 " without JBOD MAP support from %s %d\n", __func__, __LINE__); 4301 } else { 4302 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 4303 + sdev->id; 4304 devhandle = device_id; 4305 } 4306 4307 return devhandle; 4308 } 4309 4310 /* 4311 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters 4312 * @scmd : pointer to scsi command object 4313 * 4314 * Return SUCCESS, if command aborted else FAILED 4315 */ 4316 4317 int megasas_task_abort_fusion(struct scsi_cmnd *scmd) 4318 { 4319 struct megasas_instance *instance; 4320 u16 smid, devhandle; 4321 struct fusion_context *fusion; 4322 int ret; 4323 struct MR_PRIV_DEVICE *mr_device_priv_data; 4324 mr_device_priv_data = scmd->device->hostdata; 4325 4326 4327 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4328 fusion = instance->ctrl_context; 4329 4330 scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd); 4331 scsi_print_command(scmd); 4332 4333 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4334 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4335 "SCSI host:%d\n", instance->host->host_no); 4336 ret = FAILED; 4337 return ret; 4338 } 4339 4340 if (!mr_device_priv_data) { 4341 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4342 "scmd(%p)\n", scmd); 4343 scmd->result = DID_NO_CONNECT << 16; 4344 ret = SUCCESS; 4345 goto out; 4346 } 4347 4348 4349 if (!mr_device_priv_data->is_tm_capable) { 4350 ret = FAILED; 4351 goto out; 4352 } 4353 4354 mutex_lock(&instance->reset_mutex); 4355 4356 smid = megasas_fusion_smid_lookup(scmd); 4357 4358 if (!smid) { 4359 ret = SUCCESS; 4360 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" 4361 " issued is not found in oustanding commands\n"); 4362 mutex_unlock(&instance->reset_mutex); 4363 goto out; 4364 } 4365 4366 devhandle = megasas_get_tm_devhandle(scmd->device); 4367 4368 if (devhandle == (u16)ULONG_MAX) { 4369 ret = SUCCESS; 4370 sdev_printk(KERN_INFO, scmd->device, 4371 "task abort issued for invalid devhandle\n"); 4372 mutex_unlock(&instance->reset_mutex); 4373 goto out; 4374 } 4375 sdev_printk(KERN_INFO, scmd->device, 4376 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n", 4377 scmd, devhandle); 4378 4379 mr_device_priv_data->tm_busy = 1; 4380 ret = megasas_issue_tm(instance, devhandle, 4381 scmd->device->channel, scmd->device->id, smid, 4382 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK); 4383 mr_device_priv_data->tm_busy = 0; 4384 4385 mutex_unlock(&instance->reset_mutex); 4386 out: 4387 sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n", 4388 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 4389 4390 return ret; 4391 } 4392 4393 /* 4394 * megasas_reset_target_fusion : target reset function for fusion adapters 4395 * scmd: SCSI command pointer 4396 * 4397 * Returns SUCCESS if all commands associated with target aborted else FAILED 4398 */ 4399 4400 int megasas_reset_target_fusion(struct scsi_cmnd *scmd) 4401 { 4402 4403 struct megasas_instance *instance; 4404 int ret = FAILED; 4405 u16 devhandle; 4406 struct fusion_context *fusion; 4407 struct MR_PRIV_DEVICE *mr_device_priv_data; 4408 mr_device_priv_data = scmd->device->hostdata; 4409 4410 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4411 fusion = instance->ctrl_context; 4412 4413 sdev_printk(KERN_INFO, scmd->device, 4414 "target reset called for scmd(%p)\n", scmd); 4415 4416 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4417 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4418 "SCSI host:%d\n", instance->host->host_no); 4419 ret = FAILED; 4420 return ret; 4421 } 4422 4423 if (!mr_device_priv_data) { 4424 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4425 "scmd(%p)\n", scmd); 4426 scmd->result = DID_NO_CONNECT << 16; 4427 ret = SUCCESS; 4428 goto out; 4429 } 4430 4431 4432 if (!mr_device_priv_data->is_tm_capable) { 4433 ret = FAILED; 4434 goto out; 4435 } 4436 4437 mutex_lock(&instance->reset_mutex); 4438 devhandle = megasas_get_tm_devhandle(scmd->device); 4439 4440 if (devhandle == (u16)ULONG_MAX) { 4441 ret = SUCCESS; 4442 sdev_printk(KERN_INFO, scmd->device, 4443 "target reset issued for invalid devhandle\n"); 4444 mutex_unlock(&instance->reset_mutex); 4445 goto out; 4446 } 4447 4448 sdev_printk(KERN_INFO, scmd->device, 4449 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n", 4450 scmd, devhandle); 4451 mr_device_priv_data->tm_busy = 1; 4452 ret = megasas_issue_tm(instance, devhandle, 4453 scmd->device->channel, scmd->device->id, 0, 4454 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET); 4455 mr_device_priv_data->tm_busy = 0; 4456 mutex_unlock(&instance->reset_mutex); 4457 out: 4458 scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n", 4459 (ret == SUCCESS) ? "SUCCESS" : "FAILED"); 4460 4461 return ret; 4462 } 4463 4464 /*SRIOV get other instance in cluster if any*/ 4465 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) 4466 { 4467 int i; 4468 4469 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { 4470 if (megasas_mgmt_info.instance[i] && 4471 (megasas_mgmt_info.instance[i] != instance) && 4472 megasas_mgmt_info.instance[i]->requestorId && 4473 megasas_mgmt_info.instance[i]->peerIsPresent && 4474 (memcmp((megasas_mgmt_info.instance[i]->clusterId), 4475 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) 4476 return megasas_mgmt_info.instance[i]; 4477 } 4478 return NULL; 4479 } 4480 4481 /* Check for a second path that is currently UP */ 4482 int megasas_check_mpio_paths(struct megasas_instance *instance, 4483 struct scsi_cmnd *scmd) 4484 { 4485 struct megasas_instance *peer_instance = NULL; 4486 int retval = (DID_REQUEUE << 16); 4487 4488 if (instance->peerIsPresent) { 4489 peer_instance = megasas_get_peer_instance(instance); 4490 if ((peer_instance) && 4491 (atomic_read(&peer_instance->adprecovery) == 4492 MEGASAS_HBA_OPERATIONAL)) 4493 retval = (DID_NO_CONNECT << 16); 4494 } 4495 return retval; 4496 } 4497 4498 /* Core fusion reset function */ 4499 int megasas_reset_fusion(struct Scsi_Host *shost, int reason) 4500 { 4501 int retval = SUCCESS, i, j, convert = 0; 4502 struct megasas_instance *instance; 4503 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; 4504 struct fusion_context *fusion; 4505 u32 abs_state, status_reg, reset_adapter; 4506 u32 io_timeout_in_crash_mode = 0; 4507 struct scsi_cmnd *scmd_local = NULL; 4508 struct scsi_device *sdev; 4509 4510 instance = (struct megasas_instance *)shost->hostdata; 4511 fusion = instance->ctrl_context; 4512 4513 mutex_lock(&instance->reset_mutex); 4514 4515 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 4516 dev_warn(&instance->pdev->dev, "Hardware critical error, " 4517 "returning FAILED for scsi%d.\n", 4518 instance->host->host_no); 4519 mutex_unlock(&instance->reset_mutex); 4520 return FAILED; 4521 } 4522 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); 4523 abs_state = status_reg & MFI_STATE_MASK; 4524 4525 /* IO timeout detected, forcibly put FW in FAULT state */ 4526 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && 4527 instance->crash_dump_app_support && reason) { 4528 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " 4529 "forcibly FAULT Firmware\n"); 4530 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4531 status_reg = readl(&instance->reg_set->doorbell); 4532 writel(status_reg | MFI_STATE_FORCE_OCR, 4533 &instance->reg_set->doorbell); 4534 readl(&instance->reg_set->doorbell); 4535 mutex_unlock(&instance->reset_mutex); 4536 do { 4537 ssleep(3); 4538 io_timeout_in_crash_mode++; 4539 dev_dbg(&instance->pdev->dev, "waiting for [%d] " 4540 "seconds for crash dump collection and OCR " 4541 "to be done\n", (io_timeout_in_crash_mode * 3)); 4542 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 4543 (io_timeout_in_crash_mode < 80)); 4544 4545 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 4546 dev_info(&instance->pdev->dev, "OCR done for IO " 4547 "timeout case\n"); 4548 retval = SUCCESS; 4549 } else { 4550 dev_info(&instance->pdev->dev, "Controller is not " 4551 "operational after 240 seconds wait for IO " 4552 "timeout case in FW crash dump mode\n do " 4553 "OCR/kill adapter\n"); 4554 retval = megasas_reset_fusion(shost, 0); 4555 } 4556 return retval; 4557 } 4558 4559 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 4560 del_timer_sync(&instance->sriov_heartbeat_timer); 4561 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4562 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); 4563 instance->instancet->disable_intr(instance); 4564 megasas_sync_irqs((unsigned long)instance); 4565 4566 /* First try waiting for commands to complete */ 4567 if (megasas_wait_for_outstanding_fusion(instance, reason, 4568 &convert)) { 4569 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4570 dev_warn(&instance->pdev->dev, "resetting fusion " 4571 "adapter scsi%d.\n", instance->host->host_no); 4572 if (convert) 4573 reason = 0; 4574 4575 if (megasas_dbg_lvl & OCR_LOGS) 4576 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); 4577 4578 /* Now return commands back to the OS */ 4579 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4580 cmd_fusion = fusion->cmd_list[i]; 4581 /*check for extra commands issued by driver*/ 4582 if (instance->adapter_type == VENTURA_SERIES) { 4583 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; 4584 megasas_return_cmd_fusion(instance, r1_cmd); 4585 } 4586 scmd_local = cmd_fusion->scmd; 4587 if (cmd_fusion->scmd) { 4588 if (megasas_dbg_lvl & OCR_LOGS) { 4589 sdev_printk(KERN_INFO, 4590 cmd_fusion->scmd->device, "SMID: 0x%x\n", 4591 cmd_fusion->index); 4592 scsi_print_command(cmd_fusion->scmd); 4593 } 4594 4595 scmd_local->result = 4596 megasas_check_mpio_paths(instance, 4597 scmd_local); 4598 if (instance->ldio_threshold && 4599 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 4600 atomic_dec(&instance->ldio_outstanding); 4601 megasas_return_cmd_fusion(instance, cmd_fusion); 4602 scsi_dma_unmap(scmd_local); 4603 scmd_local->scsi_done(scmd_local); 4604 } 4605 } 4606 4607 atomic_set(&instance->fw_outstanding, 0); 4608 4609 status_reg = instance->instancet->read_fw_status_reg( 4610 instance->reg_set); 4611 abs_state = status_reg & MFI_STATE_MASK; 4612 reset_adapter = status_reg & MFI_RESET_ADAPTER; 4613 if (instance->disableOnlineCtrlReset || 4614 (abs_state == MFI_STATE_FAULT && !reset_adapter)) { 4615 /* Reset not supported, kill adapter */ 4616 dev_warn(&instance->pdev->dev, "Reset not supported" 4617 ", killing adapter scsi%d.\n", 4618 instance->host->host_no); 4619 megaraid_sas_kill_hba(instance); 4620 instance->skip_heartbeat_timer_del = 1; 4621 retval = FAILED; 4622 goto out; 4623 } 4624 4625 /* Let SR-IOV VF & PF sync up if there was a HB failure */ 4626 if (instance->requestorId && !reason) { 4627 msleep(MEGASAS_OCR_SETTLE_TIME_VF); 4628 goto transition_to_ready; 4629 } 4630 4631 /* Now try to reset the chip */ 4632 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { 4633 4634 if (instance->instancet->adp_reset 4635 (instance, instance->reg_set)) 4636 continue; 4637 transition_to_ready: 4638 /* Wait for FW to become ready */ 4639 if (megasas_transition_to_ready(instance, 1)) { 4640 dev_warn(&instance->pdev->dev, 4641 "Failed to transition controller to ready for " 4642 "scsi%d.\n", instance->host->host_no); 4643 if (instance->requestorId && !reason) 4644 goto fail_kill_adapter; 4645 else 4646 continue; 4647 } 4648 megasas_reset_reply_desc(instance); 4649 megasas_fusion_update_can_queue(instance, OCR_CONTEXT); 4650 4651 if (megasas_ioc_init_fusion(instance)) { 4652 if (instance->requestorId && !reason) 4653 goto fail_kill_adapter; 4654 else 4655 continue; 4656 } 4657 4658 if (megasas_get_ctrl_info(instance)) { 4659 dev_info(&instance->pdev->dev, 4660 "Failed from %s %d\n", 4661 __func__, __LINE__); 4662 megaraid_sas_kill_hba(instance); 4663 retval = FAILED; 4664 goto out; 4665 } 4666 4667 megasas_refire_mgmt_cmd(instance); 4668 4669 /* Reset load balance info */ 4670 if (fusion->load_balance_info) 4671 memset(fusion->load_balance_info, 0, 4672 (sizeof(struct LD_LOAD_BALANCE_INFO) * 4673 MAX_LOGICAL_DRIVES_EXT)); 4674 4675 if (!megasas_get_map_info(instance)) 4676 megasas_sync_map_info(instance); 4677 4678 megasas_setup_jbod_map(instance); 4679 4680 shost_for_each_device(sdev, shost) 4681 megasas_set_dynamic_target_properties(sdev); 4682 4683 /* reset stream detection array */ 4684 if (instance->adapter_type == VENTURA_SERIES) { 4685 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { 4686 memset(fusion->stream_detect_by_ld[j], 4687 0, sizeof(struct LD_STREAM_DETECT)); 4688 fusion->stream_detect_by_ld[j]->mru_bit_map 4689 = MR_STREAM_BITMAP; 4690 } 4691 } 4692 4693 clear_bit(MEGASAS_FUSION_IN_RESET, 4694 &instance->reset_flags); 4695 instance->instancet->enable_intr(instance); 4696 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4697 4698 dev_info(&instance->pdev->dev, "Interrupts are enabled and" 4699 " controller is OPERATIONAL for scsi:%d\n", 4700 instance->host->host_no); 4701 4702 /* Restart SR-IOV heartbeat */ 4703 if (instance->requestorId) { 4704 if (!megasas_sriov_start_heartbeat(instance, 0)) 4705 megasas_start_timer(instance); 4706 else 4707 instance->skip_heartbeat_timer_del = 1; 4708 } 4709 4710 if (instance->crash_dump_drv_support && 4711 instance->crash_dump_app_support) 4712 megasas_set_crash_dump_params(instance, 4713 MR_CRASH_BUF_TURN_ON); 4714 else 4715 megasas_set_crash_dump_params(instance, 4716 MR_CRASH_BUF_TURN_OFF); 4717 4718 retval = SUCCESS; 4719 4720 /* Adapter reset completed successfully */ 4721 dev_warn(&instance->pdev->dev, 4722 "Reset successful for scsi%d.\n", 4723 instance->host->host_no); 4724 4725 goto out; 4726 } 4727 fail_kill_adapter: 4728 /* Reset failed, kill the adapter */ 4729 dev_warn(&instance->pdev->dev, "Reset failed, killing " 4730 "adapter scsi%d.\n", instance->host->host_no); 4731 megaraid_sas_kill_hba(instance); 4732 instance->skip_heartbeat_timer_del = 1; 4733 retval = FAILED; 4734 } else { 4735 /* For VF: Restart HB timer if we didn't OCR */ 4736 if (instance->requestorId) { 4737 megasas_start_timer(instance); 4738 } 4739 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4740 instance->instancet->enable_intr(instance); 4741 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4742 } 4743 out: 4744 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4745 mutex_unlock(&instance->reset_mutex); 4746 return retval; 4747 } 4748 4749 /* Fusion Crash dump collection work queue */ 4750 void megasas_fusion_crash_dump_wq(struct work_struct *work) 4751 { 4752 struct megasas_instance *instance = 4753 container_of(work, struct megasas_instance, crash_init); 4754 u32 status_reg; 4755 u8 partial_copy = 0; 4756 4757 4758 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); 4759 4760 /* 4761 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer 4762 * to host crash buffers 4763 */ 4764 if (instance->drv_buf_index == 0) { 4765 /* Buffer is already allocated for old Crash dump. 4766 * Do OCR and do not wait for crash dump collection 4767 */ 4768 if (instance->drv_buf_alloc) { 4769 dev_info(&instance->pdev->dev, "earlier crash dump is " 4770 "not yet copied by application, ignoring this " 4771 "crash dump and initiating OCR\n"); 4772 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4773 writel(status_reg, 4774 &instance->reg_set->outbound_scratch_pad); 4775 readl(&instance->reg_set->outbound_scratch_pad); 4776 return; 4777 } 4778 megasas_alloc_host_crash_buffer(instance); 4779 dev_info(&instance->pdev->dev, "Number of host crash buffers " 4780 "allocated: %d\n", instance->drv_buf_alloc); 4781 } 4782 4783 /* 4784 * Driver has allocated max buffers, which can be allocated 4785 * and FW has more crash dump data, then driver will 4786 * ignore the data. 4787 */ 4788 if (instance->drv_buf_index >= (instance->drv_buf_alloc)) { 4789 dev_info(&instance->pdev->dev, "Driver is done copying " 4790 "the buffer: %d\n", instance->drv_buf_alloc); 4791 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4792 partial_copy = 1; 4793 } else { 4794 memcpy(instance->crash_buf[instance->drv_buf_index], 4795 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); 4796 instance->drv_buf_index++; 4797 status_reg &= ~MFI_STATE_DMADONE; 4798 } 4799 4800 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { 4801 dev_info(&instance->pdev->dev, "Crash Dump is available,number " 4802 "of copied buffers: %d\n", instance->drv_buf_index); 4803 instance->fw_crash_buffer_size = instance->drv_buf_index; 4804 instance->fw_crash_state = AVAILABLE; 4805 instance->drv_buf_index = 0; 4806 writel(status_reg, &instance->reg_set->outbound_scratch_pad); 4807 readl(&instance->reg_set->outbound_scratch_pad); 4808 if (!partial_copy) 4809 megasas_reset_fusion(instance->host, 0); 4810 } else { 4811 writel(status_reg, &instance->reg_set->outbound_scratch_pad); 4812 readl(&instance->reg_set->outbound_scratch_pad); 4813 } 4814 } 4815 4816 4817 /* Fusion OCR work queue */ 4818 void megasas_fusion_ocr_wq(struct work_struct *work) 4819 { 4820 struct megasas_instance *instance = 4821 container_of(work, struct megasas_instance, work_init); 4822 4823 megasas_reset_fusion(instance->host, 0); 4824 } 4825 4826 /* Allocate fusion context */ 4827 int 4828 megasas_alloc_fusion_context(struct megasas_instance *instance) 4829 { 4830 struct fusion_context *fusion; 4831 4832 instance->ctrl_context = kzalloc(sizeof(struct fusion_context), 4833 GFP_KERNEL); 4834 if (!instance->ctrl_context) { 4835 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4836 __func__, __LINE__); 4837 return -ENOMEM; 4838 } 4839 4840 fusion = instance->ctrl_context; 4841 4842 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4843 sizeof(LD_SPAN_INFO)); 4844 fusion->log_to_span = 4845 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4846 fusion->log_to_span_pages); 4847 if (!fusion->log_to_span) { 4848 fusion->log_to_span = vzalloc(MAX_LOGICAL_DRIVES_EXT * 4849 sizeof(LD_SPAN_INFO)); 4850 if (!fusion->log_to_span) { 4851 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4852 __func__, __LINE__); 4853 return -ENOMEM; 4854 } 4855 } 4856 4857 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4858 sizeof(struct LD_LOAD_BALANCE_INFO)); 4859 fusion->load_balance_info = 4860 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4861 fusion->load_balance_info_pages); 4862 if (!fusion->load_balance_info) { 4863 fusion->load_balance_info = vzalloc(MAX_LOGICAL_DRIVES_EXT * 4864 sizeof(struct LD_LOAD_BALANCE_INFO)); 4865 if (!fusion->load_balance_info) 4866 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " 4867 "continuing without Load Balance support\n"); 4868 } 4869 4870 return 0; 4871 } 4872 4873 void 4874 megasas_free_fusion_context(struct megasas_instance *instance) 4875 { 4876 struct fusion_context *fusion = instance->ctrl_context; 4877 4878 if (fusion) { 4879 if (fusion->load_balance_info) { 4880 if (is_vmalloc_addr(fusion->load_balance_info)) 4881 vfree(fusion->load_balance_info); 4882 else 4883 free_pages((ulong)fusion->load_balance_info, 4884 fusion->load_balance_info_pages); 4885 } 4886 4887 if (fusion->log_to_span) { 4888 if (is_vmalloc_addr(fusion->log_to_span)) 4889 vfree(fusion->log_to_span); 4890 else 4891 free_pages((ulong)fusion->log_to_span, 4892 fusion->log_to_span_pages); 4893 } 4894 4895 kfree(fusion); 4896 } 4897 } 4898 4899 struct megasas_instance_template megasas_instance_template_fusion = { 4900 .enable_intr = megasas_enable_intr_fusion, 4901 .disable_intr = megasas_disable_intr_fusion, 4902 .clear_intr = megasas_clear_intr_fusion, 4903 .read_fw_status_reg = megasas_read_fw_status_reg_fusion, 4904 .adp_reset = megasas_adp_reset_fusion, 4905 .check_reset = megasas_check_reset_fusion, 4906 .service_isr = megasas_isr_fusion, 4907 .tasklet = megasas_complete_cmd_dpc_fusion, 4908 .init_adapter = megasas_init_adapter_fusion, 4909 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, 4910 .issue_dcmd = megasas_issue_dcmd_fusion, 4911 }; 4912