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: 64bit Request descriptor 220 * 221 * Perform PCI Write. 222 */ 223 224 static void 225 megasas_fire_cmd_fusion(struct megasas_instance *instance, 226 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc) 227 { 228 #if defined(writeq) && defined(CONFIG_64BIT) 229 u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) | 230 le32_to_cpu(req_desc->u.low)); 231 232 writeq(req_data, &instance->reg_set->inbound_low_queue_port); 233 #else 234 unsigned long flags; 235 spin_lock_irqsave(&instance->hba_lock, flags); 236 writel(le32_to_cpu(req_desc->u.low), 237 &instance->reg_set->inbound_low_queue_port); 238 writel(le32_to_cpu(req_desc->u.high), 239 &instance->reg_set->inbound_high_queue_port); 240 mmiowb(); 241 spin_unlock_irqrestore(&instance->hba_lock, flags); 242 #endif 243 } 244 245 /** 246 * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here 247 * @instance: Adapter soft state 248 * fw_boot_context: Whether this function called during probe or after OCR 249 * 250 * This function is only for fusion controllers. 251 * Update host can queue, if firmware downgrade max supported firmware commands. 252 * Firmware upgrade case will be skiped because underlying firmware has 253 * more resource than exposed to the OS. 254 * 255 */ 256 static void 257 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context) 258 { 259 u16 cur_max_fw_cmds = 0; 260 u16 ldio_threshold = 0; 261 struct megasas_register_set __iomem *reg_set; 262 263 reg_set = instance->reg_set; 264 265 /* ventura FW does not fill outbound_scratch_pad_3 with queue depth */ 266 if (instance->adapter_type < VENTURA_SERIES) 267 cur_max_fw_cmds = 268 readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF; 269 270 if (dual_qdepth_disable || !cur_max_fw_cmds) 271 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 272 else 273 ldio_threshold = 274 (instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS; 275 276 dev_info(&instance->pdev->dev, 277 "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n", 278 cur_max_fw_cmds, ldio_threshold); 279 280 if (fw_boot_context == OCR_CONTEXT) { 281 cur_max_fw_cmds = cur_max_fw_cmds - 1; 282 if (cur_max_fw_cmds < instance->max_fw_cmds) { 283 instance->cur_can_queue = 284 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS + 285 MEGASAS_FUSION_IOCTL_CMDS); 286 instance->host->can_queue = instance->cur_can_queue; 287 instance->ldio_threshold = ldio_threshold; 288 } 289 } else { 290 instance->max_fw_cmds = cur_max_fw_cmds; 291 instance->ldio_threshold = ldio_threshold; 292 293 if (reset_devices) 294 instance->max_fw_cmds = min(instance->max_fw_cmds, 295 (u16)MEGASAS_KDUMP_QUEUE_DEPTH); 296 /* 297 * Reduce the max supported cmds by 1. This is to ensure that the 298 * reply_q_sz (1 more than the max cmd that driver may send) 299 * does not exceed max cmds that the FW can support 300 */ 301 instance->max_fw_cmds = instance->max_fw_cmds-1; 302 } 303 } 304 /** 305 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool 306 * @instance: Adapter soft state 307 */ 308 void 309 megasas_free_cmds_fusion(struct megasas_instance *instance) 310 { 311 int i; 312 struct fusion_context *fusion = instance->ctrl_context; 313 struct megasas_cmd_fusion *cmd; 314 315 if (fusion->sense) 316 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 317 fusion->sense_phys_addr); 318 319 /* SG */ 320 if (fusion->cmd_list) { 321 for (i = 0; i < instance->max_mpt_cmds; i++) { 322 cmd = fusion->cmd_list[i]; 323 if (cmd) { 324 if (cmd->sg_frame) 325 dma_pool_free(fusion->sg_dma_pool, 326 cmd->sg_frame, 327 cmd->sg_frame_phys_addr); 328 } 329 kfree(cmd); 330 } 331 kfree(fusion->cmd_list); 332 } 333 334 if (fusion->sg_dma_pool) { 335 dma_pool_destroy(fusion->sg_dma_pool); 336 fusion->sg_dma_pool = NULL; 337 } 338 if (fusion->sense_dma_pool) { 339 dma_pool_destroy(fusion->sense_dma_pool); 340 fusion->sense_dma_pool = NULL; 341 } 342 343 344 /* Reply Frame, Desc*/ 345 if (instance->is_rdpq) 346 megasas_free_rdpq_fusion(instance); 347 else 348 megasas_free_reply_fusion(instance); 349 350 /* Request Frame, Desc*/ 351 if (fusion->req_frames_desc) 352 dma_free_coherent(&instance->pdev->dev, 353 fusion->request_alloc_sz, fusion->req_frames_desc, 354 fusion->req_frames_desc_phys); 355 if (fusion->io_request_frames) 356 dma_pool_free(fusion->io_request_frames_pool, 357 fusion->io_request_frames, 358 fusion->io_request_frames_phys); 359 if (fusion->io_request_frames_pool) { 360 dma_pool_destroy(fusion->io_request_frames_pool); 361 fusion->io_request_frames_pool = NULL; 362 } 363 } 364 365 /** 366 * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames 367 * @instance: Adapter soft state 368 * 369 */ 370 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance) 371 { 372 int i; 373 u16 max_cmd; 374 struct fusion_context *fusion; 375 struct megasas_cmd_fusion *cmd; 376 int sense_sz; 377 u32 offset; 378 379 fusion = instance->ctrl_context; 380 max_cmd = instance->max_fw_cmds; 381 sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE; 382 383 fusion->sg_dma_pool = 384 dma_pool_create("mr_sg", &instance->pdev->dev, 385 instance->max_chain_frame_sz, 386 MR_DEFAULT_NVME_PAGE_SIZE, 0); 387 /* SCSI_SENSE_BUFFERSIZE = 96 bytes */ 388 fusion->sense_dma_pool = 389 dma_pool_create("mr_sense", &instance->pdev->dev, 390 sense_sz, 64, 0); 391 392 if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) { 393 dev_err(&instance->pdev->dev, 394 "Failed from %s %d\n", __func__, __LINE__); 395 return -ENOMEM; 396 } 397 398 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 399 GFP_KERNEL, &fusion->sense_phys_addr); 400 if (!fusion->sense) { 401 dev_err(&instance->pdev->dev, 402 "failed from %s %d\n", __func__, __LINE__); 403 return -ENOMEM; 404 } 405 406 /* sense buffer, request frame and reply desc pool requires to be in 407 * same 4 gb region. Below function will check this. 408 * In case of failure, new pci pool will be created with updated 409 * alignment. 410 * Older allocation and pool will be destroyed. 411 * Alignment will be used such a way that next allocation if success, 412 * will always meet same 4gb region requirement. 413 * Actual requirement is not alignment, but we need start and end of 414 * DMA address must have same upper 32 bit address. 415 */ 416 417 if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr, 418 sense_sz)) { 419 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 420 fusion->sense_phys_addr); 421 fusion->sense = NULL; 422 dma_pool_destroy(fusion->sense_dma_pool); 423 424 fusion->sense_dma_pool = 425 dma_pool_create("mr_sense_align", &instance->pdev->dev, 426 sense_sz, roundup_pow_of_two(sense_sz), 427 0); 428 if (!fusion->sense_dma_pool) { 429 dev_err(&instance->pdev->dev, 430 "Failed from %s %d\n", __func__, __LINE__); 431 return -ENOMEM; 432 } 433 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 434 GFP_KERNEL, 435 &fusion->sense_phys_addr); 436 if (!fusion->sense) { 437 dev_err(&instance->pdev->dev, 438 "failed from %s %d\n", __func__, __LINE__); 439 return -ENOMEM; 440 } 441 } 442 443 /* 444 * Allocate and attach a frame to each of the commands in cmd_list 445 */ 446 for (i = 0; i < max_cmd; i++) { 447 cmd = fusion->cmd_list[i]; 448 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool, 449 GFP_KERNEL, &cmd->sg_frame_phys_addr); 450 451 offset = SCSI_SENSE_BUFFERSIZE * i; 452 cmd->sense = (u8 *)fusion->sense + offset; 453 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 454 455 if (!cmd->sg_frame) { 456 dev_err(&instance->pdev->dev, 457 "Failed from %s %d\n", __func__, __LINE__); 458 return -ENOMEM; 459 } 460 } 461 462 /* create sense buffer for the raid 1/10 fp */ 463 for (i = max_cmd; i < instance->max_mpt_cmds; i++) { 464 cmd = fusion->cmd_list[i]; 465 offset = SCSI_SENSE_BUFFERSIZE * i; 466 cmd->sense = (u8 *)fusion->sense + offset; 467 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 468 469 } 470 471 return 0; 472 } 473 474 int 475 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance) 476 { 477 u32 max_mpt_cmd, i, j; 478 struct fusion_context *fusion; 479 480 fusion = instance->ctrl_context; 481 482 max_mpt_cmd = instance->max_mpt_cmds; 483 484 /* 485 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. 486 * Allocate the dynamic array first and then allocate individual 487 * commands. 488 */ 489 fusion->cmd_list = 490 kzalloc(sizeof(struct megasas_cmd_fusion *) * max_mpt_cmd, 491 GFP_KERNEL); 492 if (!fusion->cmd_list) { 493 dev_err(&instance->pdev->dev, 494 "Failed from %s %d\n", __func__, __LINE__); 495 return -ENOMEM; 496 } 497 498 for (i = 0; i < max_mpt_cmd; i++) { 499 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion), 500 GFP_KERNEL); 501 if (!fusion->cmd_list[i]) { 502 for (j = 0; j < i; j++) 503 kfree(fusion->cmd_list[j]); 504 kfree(fusion->cmd_list); 505 dev_err(&instance->pdev->dev, 506 "Failed from %s %d\n", __func__, __LINE__); 507 return -ENOMEM; 508 } 509 } 510 511 return 0; 512 } 513 int 514 megasas_alloc_request_fusion(struct megasas_instance *instance) 515 { 516 struct fusion_context *fusion; 517 518 fusion = instance->ctrl_context; 519 520 retry_alloc: 521 fusion->io_request_frames_pool = 522 dma_pool_create("mr_ioreq", &instance->pdev->dev, 523 fusion->io_frames_alloc_sz, 16, 0); 524 525 if (!fusion->io_request_frames_pool) { 526 dev_err(&instance->pdev->dev, 527 "Failed from %s %d\n", __func__, __LINE__); 528 return -ENOMEM; 529 } 530 531 fusion->io_request_frames = 532 dma_pool_alloc(fusion->io_request_frames_pool, 533 GFP_KERNEL, &fusion->io_request_frames_phys); 534 if (!fusion->io_request_frames) { 535 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) { 536 instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT; 537 dma_pool_destroy(fusion->io_request_frames_pool); 538 megasas_configure_queue_sizes(instance); 539 goto retry_alloc; 540 } else { 541 dev_err(&instance->pdev->dev, 542 "Failed from %s %d\n", __func__, __LINE__); 543 return -ENOMEM; 544 } 545 } 546 547 if (!megasas_check_same_4gb_region(instance, 548 fusion->io_request_frames_phys, 549 fusion->io_frames_alloc_sz)) { 550 dma_pool_free(fusion->io_request_frames_pool, 551 fusion->io_request_frames, 552 fusion->io_request_frames_phys); 553 fusion->io_request_frames = NULL; 554 dma_pool_destroy(fusion->io_request_frames_pool); 555 556 fusion->io_request_frames_pool = 557 dma_pool_create("mr_ioreq_align", 558 &instance->pdev->dev, 559 fusion->io_frames_alloc_sz, 560 roundup_pow_of_two(fusion->io_frames_alloc_sz), 561 0); 562 563 if (!fusion->io_request_frames_pool) { 564 dev_err(&instance->pdev->dev, 565 "Failed from %s %d\n", __func__, __LINE__); 566 return -ENOMEM; 567 } 568 569 fusion->io_request_frames = 570 dma_pool_alloc(fusion->io_request_frames_pool, 571 GFP_KERNEL, 572 &fusion->io_request_frames_phys); 573 574 if (!fusion->io_request_frames) { 575 dev_err(&instance->pdev->dev, 576 "Failed from %s %d\n", __func__, __LINE__); 577 return -ENOMEM; 578 } 579 } 580 581 fusion->req_frames_desc = 582 dma_alloc_coherent(&instance->pdev->dev, 583 fusion->request_alloc_sz, 584 &fusion->req_frames_desc_phys, GFP_KERNEL); 585 if (!fusion->req_frames_desc) { 586 dev_err(&instance->pdev->dev, 587 "Failed from %s %d\n", __func__, __LINE__); 588 return -ENOMEM; 589 } 590 591 return 0; 592 } 593 594 int 595 megasas_alloc_reply_fusion(struct megasas_instance *instance) 596 { 597 int i, count; 598 struct fusion_context *fusion; 599 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 600 fusion = instance->ctrl_context; 601 602 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 603 fusion->reply_frames_desc_pool = 604 dma_pool_create("mr_reply", &instance->pdev->dev, 605 fusion->reply_alloc_sz * count, 16, 0); 606 607 if (!fusion->reply_frames_desc_pool) { 608 dev_err(&instance->pdev->dev, 609 "Failed from %s %d\n", __func__, __LINE__); 610 return -ENOMEM; 611 } 612 613 fusion->reply_frames_desc[0] = 614 dma_pool_alloc(fusion->reply_frames_desc_pool, 615 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]); 616 if (!fusion->reply_frames_desc[0]) { 617 dev_err(&instance->pdev->dev, 618 "Failed from %s %d\n", __func__, __LINE__); 619 return -ENOMEM; 620 } 621 622 if (!megasas_check_same_4gb_region(instance, 623 fusion->reply_frames_desc_phys[0], 624 (fusion->reply_alloc_sz * count))) { 625 dma_pool_free(fusion->reply_frames_desc_pool, 626 fusion->reply_frames_desc[0], 627 fusion->reply_frames_desc_phys[0]); 628 fusion->reply_frames_desc[0] = NULL; 629 dma_pool_destroy(fusion->reply_frames_desc_pool); 630 631 fusion->reply_frames_desc_pool = 632 dma_pool_create("mr_reply_align", 633 &instance->pdev->dev, 634 fusion->reply_alloc_sz * count, 635 roundup_pow_of_two(fusion->reply_alloc_sz * count), 636 0); 637 638 if (!fusion->reply_frames_desc_pool) { 639 dev_err(&instance->pdev->dev, 640 "Failed from %s %d\n", __func__, __LINE__); 641 return -ENOMEM; 642 } 643 644 fusion->reply_frames_desc[0] = 645 dma_pool_alloc(fusion->reply_frames_desc_pool, 646 GFP_KERNEL, 647 &fusion->reply_frames_desc_phys[0]); 648 649 if (!fusion->reply_frames_desc[0]) { 650 dev_err(&instance->pdev->dev, 651 "Failed from %s %d\n", __func__, __LINE__); 652 return -ENOMEM; 653 } 654 } 655 656 reply_desc = fusion->reply_frames_desc[0]; 657 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) 658 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 659 660 /* This is not a rdpq mode, but driver still populate 661 * reply_frame_desc array to use same msix index in ISR path. 662 */ 663 for (i = 0; i < (count - 1); i++) 664 fusion->reply_frames_desc[i + 1] = 665 fusion->reply_frames_desc[i] + 666 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION); 667 668 return 0; 669 } 670 671 int 672 megasas_alloc_rdpq_fusion(struct megasas_instance *instance) 673 { 674 int i, j, k, msix_count; 675 struct fusion_context *fusion; 676 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 677 union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT]; 678 dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT]; 679 u8 dma_alloc_count, abs_index; 680 u32 chunk_size, array_size, offset; 681 682 fusion = instance->ctrl_context; 683 chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK; 684 array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * 685 MAX_MSIX_QUEUES_FUSION; 686 687 fusion->rdpq_virt = pci_alloc_consistent(instance->pdev, array_size, 688 &fusion->rdpq_phys); 689 if (!fusion->rdpq_virt) { 690 dev_err(&instance->pdev->dev, 691 "Failed from %s %d\n", __func__, __LINE__); 692 return -ENOMEM; 693 } 694 695 memset(fusion->rdpq_virt, 0, array_size); 696 msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 697 698 fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq", 699 &instance->pdev->dev, 700 chunk_size, 16, 0); 701 fusion->reply_frames_desc_pool_align = 702 dma_pool_create("mr_rdpq_align", 703 &instance->pdev->dev, 704 chunk_size, 705 roundup_pow_of_two(chunk_size), 706 0); 707 708 if (!fusion->reply_frames_desc_pool || 709 !fusion->reply_frames_desc_pool_align) { 710 dev_err(&instance->pdev->dev, 711 "Failed from %s %d\n", __func__, __LINE__); 712 return -ENOMEM; 713 } 714 715 /* 716 * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and 717 * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be 718 * within 4GB boundary and also reply queues in a set must have same 719 * upper 32-bits in their memory address. so here driver is allocating the 720 * DMA'able memory for reply queues according. Driver uses limitation of 721 * VENTURA_SERIES to manage INVADER_SERIES as well. 722 */ 723 dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK); 724 725 for (i = 0; i < dma_alloc_count; i++) { 726 rdpq_chunk_virt[i] = 727 dma_pool_alloc(fusion->reply_frames_desc_pool, 728 GFP_KERNEL, &rdpq_chunk_phys[i]); 729 if (!rdpq_chunk_virt[i]) { 730 dev_err(&instance->pdev->dev, 731 "Failed from %s %d\n", __func__, __LINE__); 732 return -ENOMEM; 733 } 734 /* reply desc pool requires to be in same 4 gb region. 735 * Below function will check this. 736 * In case of failure, new pci pool will be created with updated 737 * alignment. 738 * For RDPQ buffers, driver always allocate two separate pci pool. 739 * Alignment will be used such a way that next allocation if 740 * success, will always meet same 4gb region requirement. 741 * rdpq_tracker keep track of each buffer's physical, 742 * virtual address and pci pool descriptor. It will help driver 743 * while freeing the resources. 744 * 745 */ 746 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i], 747 chunk_size)) { 748 dma_pool_free(fusion->reply_frames_desc_pool, 749 rdpq_chunk_virt[i], 750 rdpq_chunk_phys[i]); 751 752 rdpq_chunk_virt[i] = 753 dma_pool_alloc(fusion->reply_frames_desc_pool_align, 754 GFP_KERNEL, &rdpq_chunk_phys[i]); 755 if (!rdpq_chunk_virt[i]) { 756 dev_err(&instance->pdev->dev, 757 "Failed from %s %d\n", 758 __func__, __LINE__); 759 return -ENOMEM; 760 } 761 fusion->rdpq_tracker[i].dma_pool_ptr = 762 fusion->reply_frames_desc_pool_align; 763 } else { 764 fusion->rdpq_tracker[i].dma_pool_ptr = 765 fusion->reply_frames_desc_pool; 766 } 767 768 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i]; 769 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i]; 770 } 771 772 for (k = 0; k < dma_alloc_count; k++) { 773 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) { 774 abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i; 775 776 if (abs_index == msix_count) 777 break; 778 offset = fusion->reply_alloc_sz * i; 779 fusion->rdpq_virt[abs_index].RDPQBaseAddress = 780 cpu_to_le64(rdpq_chunk_phys[k] + offset); 781 fusion->reply_frames_desc_phys[abs_index] = 782 rdpq_chunk_phys[k] + offset; 783 fusion->reply_frames_desc[abs_index] = 784 (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset); 785 786 reply_desc = fusion->reply_frames_desc[abs_index]; 787 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++) 788 reply_desc->Words = ULLONG_MAX; 789 } 790 } 791 792 return 0; 793 } 794 795 static void 796 megasas_free_rdpq_fusion(struct megasas_instance *instance) { 797 798 int i; 799 struct fusion_context *fusion; 800 801 fusion = instance->ctrl_context; 802 803 for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) { 804 if (fusion->rdpq_tracker[i].pool_entry_virt) 805 dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr, 806 fusion->rdpq_tracker[i].pool_entry_virt, 807 fusion->rdpq_tracker[i].pool_entry_phys); 808 809 } 810 811 if (fusion->reply_frames_desc_pool) 812 dma_pool_destroy(fusion->reply_frames_desc_pool); 813 if (fusion->reply_frames_desc_pool_align) 814 dma_pool_destroy(fusion->reply_frames_desc_pool_align); 815 816 if (fusion->rdpq_virt) 817 pci_free_consistent(instance->pdev, 818 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION, 819 fusion->rdpq_virt, fusion->rdpq_phys); 820 } 821 822 static void 823 megasas_free_reply_fusion(struct megasas_instance *instance) { 824 825 struct fusion_context *fusion; 826 827 fusion = instance->ctrl_context; 828 829 if (fusion->reply_frames_desc[0]) 830 dma_pool_free(fusion->reply_frames_desc_pool, 831 fusion->reply_frames_desc[0], 832 fusion->reply_frames_desc_phys[0]); 833 834 if (fusion->reply_frames_desc_pool) 835 dma_pool_destroy(fusion->reply_frames_desc_pool); 836 837 } 838 839 840 /** 841 * megasas_alloc_cmds_fusion - Allocates the command packets 842 * @instance: Adapter soft state 843 * 844 * 845 * Each frame has a 32-bit field called context. This context is used to get 846 * back the megasas_cmd_fusion from the frame when a frame gets completed 847 * In this driver, the 32 bit values are the indices into an array cmd_list. 848 * This array is used only to look up the megasas_cmd_fusion given the context. 849 * The free commands themselves are maintained in a linked list called cmd_pool. 850 * 851 * cmds are formed in the io_request and sg_frame members of the 852 * megasas_cmd_fusion. The context field is used to get a request descriptor 853 * and is used as SMID of the cmd. 854 * SMID value range is from 1 to max_fw_cmds. 855 */ 856 int 857 megasas_alloc_cmds_fusion(struct megasas_instance *instance) 858 { 859 int i; 860 struct fusion_context *fusion; 861 struct megasas_cmd_fusion *cmd; 862 u32 offset; 863 dma_addr_t io_req_base_phys; 864 u8 *io_req_base; 865 866 867 fusion = instance->ctrl_context; 868 869 if (megasas_alloc_request_fusion(instance)) 870 goto fail_exit; 871 872 if (instance->is_rdpq) { 873 if (megasas_alloc_rdpq_fusion(instance)) 874 goto fail_exit; 875 } else 876 if (megasas_alloc_reply_fusion(instance)) 877 goto fail_exit; 878 879 if (megasas_alloc_cmdlist_fusion(instance)) 880 goto fail_exit; 881 882 dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n", 883 instance->max_fw_cmds); 884 885 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */ 886 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 887 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 888 889 /* 890 * Add all the commands to command pool (fusion->cmd_pool) 891 */ 892 893 /* SMID 0 is reserved. Set SMID/index from 1 */ 894 for (i = 0; i < instance->max_mpt_cmds; i++) { 895 cmd = fusion->cmd_list[i]; 896 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; 897 memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); 898 cmd->index = i + 1; 899 cmd->scmd = NULL; 900 cmd->sync_cmd_idx = 901 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ? 902 (i - instance->max_scsi_cmds) : 903 (u32)ULONG_MAX; /* Set to Invalid */ 904 cmd->instance = instance; 905 cmd->io_request = 906 (struct MPI2_RAID_SCSI_IO_REQUEST *) 907 (io_req_base + offset); 908 memset(cmd->io_request, 0, 909 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); 910 cmd->io_request_phys_addr = io_req_base_phys + offset; 911 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 912 } 913 914 if (megasas_create_sg_sense_fusion(instance)) 915 goto fail_exit; 916 917 return 0; 918 919 fail_exit: 920 megasas_free_cmds_fusion(instance); 921 return -ENOMEM; 922 } 923 924 /** 925 * wait_and_poll - Issues a polling command 926 * @instance: Adapter soft state 927 * @cmd: Command packet to be issued 928 * 929 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 930 */ 931 int 932 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 933 int seconds) 934 { 935 int i; 936 struct megasas_header *frame_hdr = &cmd->frame->hdr; 937 struct fusion_context *fusion; 938 939 u32 msecs = seconds * 1000; 940 941 fusion = instance->ctrl_context; 942 /* 943 * Wait for cmd_status to change 944 */ 945 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { 946 rmb(); 947 msleep(20); 948 } 949 950 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS) 951 return DCMD_TIMEOUT; 952 else if (frame_hdr->cmd_status == MFI_STAT_OK) 953 return DCMD_SUCCESS; 954 else 955 return DCMD_FAILED; 956 } 957 958 /** 959 * megasas_ioc_init_fusion - Initializes the FW 960 * @instance: Adapter soft state 961 * 962 * Issues the IOC Init cmd 963 */ 964 int 965 megasas_ioc_init_fusion(struct megasas_instance *instance) 966 { 967 struct megasas_init_frame *init_frame; 968 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL; 969 dma_addr_t ioc_init_handle; 970 struct megasas_cmd *cmd; 971 u8 ret, cur_rdpq_mode; 972 struct fusion_context *fusion; 973 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc; 974 int i; 975 struct megasas_header *frame_hdr; 976 const char *sys_info; 977 MFI_CAPABILITIES *drv_ops; 978 u32 scratch_pad_2; 979 ktime_t time; 980 bool cur_fw_64bit_dma_capable; 981 982 fusion = instance->ctrl_context; 983 984 ioc_init_handle = fusion->ioc_init_request_phys; 985 IOCInitMessage = fusion->ioc_init_request; 986 987 cmd = fusion->ioc_init_cmd; 988 989 scratch_pad_2 = readl 990 (&instance->reg_set->outbound_scratch_pad_2); 991 992 cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0; 993 994 if (instance->adapter_type == INVADER_SERIES) { 995 cur_fw_64bit_dma_capable = 996 (scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false; 997 998 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) { 999 dev_err(&instance->pdev->dev, "Driver was operating on 64bit " 1000 "DMA mask, but upcoming FW does not support 64bit DMA mask\n"); 1001 megaraid_sas_kill_hba(instance); 1002 ret = 1; 1003 goto fail_fw_init; 1004 } 1005 } 1006 1007 if (instance->is_rdpq && !cur_rdpq_mode) { 1008 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*" 1009 " from RDPQ mode to non RDPQ mode\n"); 1010 ret = 1; 1011 goto fail_fw_init; 1012 } 1013 1014 instance->fw_sync_cache_support = (scratch_pad_2 & 1015 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0; 1016 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n", 1017 instance->fw_sync_cache_support ? "Yes" : "No"); 1018 1019 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); 1020 1021 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; 1022 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; 1023 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION); 1024 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); 1025 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4); 1026 1027 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth); 1028 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ? 1029 cpu_to_le64(fusion->rdpq_phys) : 1030 cpu_to_le64(fusion->reply_frames_desc_phys[0]); 1031 IOCInitMessage->MsgFlags = instance->is_rdpq ? 1032 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0; 1033 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); 1034 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr)); 1035 IOCInitMessage->HostMSIxVectors = instance->msix_vectors; 1036 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT; 1037 1038 time = ktime_get_real(); 1039 /* Convert to milliseconds as per FW requirement */ 1040 IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time)); 1041 1042 init_frame = (struct megasas_init_frame *)cmd->frame; 1043 memset(init_frame, 0, IOC_INIT_FRAME_SIZE); 1044 1045 frame_hdr = &cmd->frame->hdr; 1046 frame_hdr->cmd_status = 0xFF; 1047 frame_hdr->flags = cpu_to_le16( 1048 le16_to_cpu(frame_hdr->flags) | 1049 MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1050 1051 init_frame->cmd = MFI_CMD_INIT; 1052 init_frame->cmd_status = 0xFF; 1053 1054 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations); 1055 1056 /* driver support Extended MSIX */ 1057 if (instance->adapter_type >= INVADER_SERIES) 1058 drv_ops->mfi_capabilities.support_additional_msix = 1; 1059 /* driver supports HA / Remote LUN over Fast Path interface */ 1060 drv_ops->mfi_capabilities.support_fp_remote_lun = 1; 1061 1062 drv_ops->mfi_capabilities.support_max_255lds = 1; 1063 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1; 1064 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1; 1065 1066 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN) 1067 drv_ops->mfi_capabilities.support_ext_io_size = 1; 1068 1069 drv_ops->mfi_capabilities.support_fp_rlbypass = 1; 1070 if (!dual_qdepth_disable) 1071 drv_ops->mfi_capabilities.support_ext_queue_depth = 1; 1072 1073 drv_ops->mfi_capabilities.support_qd_throttling = 1; 1074 drv_ops->mfi_capabilities.support_pd_map_target_id = 1; 1075 drv_ops->mfi_capabilities.support_nvme_passthru = 1; 1076 1077 if (instance->consistent_mask_64bit) 1078 drv_ops->mfi_capabilities.support_64bit_mode = 1; 1079 1080 /* Convert capability to LE32 */ 1081 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); 1082 1083 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID); 1084 if (instance->system_info_buf && sys_info) { 1085 memcpy(instance->system_info_buf->systemId, sys_info, 1086 strlen(sys_info) > 64 ? 64 : strlen(sys_info)); 1087 instance->system_info_buf->systemIdLength = 1088 strlen(sys_info) > 64 ? 64 : strlen(sys_info); 1089 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h)); 1090 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h)); 1091 } 1092 1093 init_frame->queue_info_new_phys_addr_hi = 1094 cpu_to_le32(upper_32_bits(ioc_init_handle)); 1095 init_frame->queue_info_new_phys_addr_lo = 1096 cpu_to_le32(lower_32_bits(ioc_init_handle)); 1097 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); 1098 1099 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr)); 1100 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr)); 1101 req_desc.MFAIo.RequestFlags = 1102 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << 1103 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 1104 1105 /* 1106 * disable the intr before firing the init frame 1107 */ 1108 instance->instancet->disable_intr(instance); 1109 1110 for (i = 0; i < (10 * 1000); i += 20) { 1111 if (readl(&instance->reg_set->doorbell) & 1) 1112 msleep(20); 1113 else 1114 break; 1115 } 1116 1117 megasas_fire_cmd_fusion(instance, &req_desc); 1118 1119 wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS); 1120 1121 frame_hdr = &cmd->frame->hdr; 1122 if (frame_hdr->cmd_status != 0) { 1123 ret = 1; 1124 goto fail_fw_init; 1125 } 1126 1127 ret = 0; 1128 1129 fail_fw_init: 1130 dev_err(&instance->pdev->dev, 1131 "Init cmd return status %s for SCSI host %d\n", 1132 ret ? "FAILED" : "SUCCESS", instance->host->host_no); 1133 1134 return ret; 1135 } 1136 1137 /** 1138 * megasas_sync_pd_seq_num - JBOD SEQ MAP 1139 * @instance: Adapter soft state 1140 * @pend: set to 1, if it is pended jbod map. 1141 * 1142 * Issue Jbod map to the firmware. If it is pended command, 1143 * issue command and return. If it is first instance of jbod map 1144 * issue and receive command. 1145 */ 1146 int 1147 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { 1148 int ret = 0; 1149 u32 pd_seq_map_sz; 1150 struct megasas_cmd *cmd; 1151 struct megasas_dcmd_frame *dcmd; 1152 struct fusion_context *fusion = instance->ctrl_context; 1153 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1154 dma_addr_t pd_seq_h; 1155 1156 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; 1157 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; 1158 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 1159 (sizeof(struct MR_PD_CFG_SEQ) * 1160 (MAX_PHYSICAL_DEVICES - 1)); 1161 1162 cmd = megasas_get_cmd(instance); 1163 if (!cmd) { 1164 dev_err(&instance->pdev->dev, 1165 "Could not get mfi cmd. Fail from %s %d\n", 1166 __func__, __LINE__); 1167 return -ENOMEM; 1168 } 1169 1170 dcmd = &cmd->frame->dcmd; 1171 1172 memset(pd_sync, 0, pd_seq_map_sz); 1173 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1174 1175 if (pend) { 1176 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1177 dcmd->flags = MFI_FRAME_DIR_WRITE; 1178 instance->jbod_seq_cmd = cmd; 1179 } else { 1180 dcmd->flags = MFI_FRAME_DIR_READ; 1181 } 1182 1183 dcmd->cmd = MFI_CMD_DCMD; 1184 dcmd->cmd_status = 0xFF; 1185 dcmd->sge_count = 1; 1186 dcmd->timeout = 0; 1187 dcmd->pad_0 = 0; 1188 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz); 1189 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO); 1190 1191 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz); 1192 1193 if (pend) { 1194 instance->instancet->issue_dcmd(instance, cmd); 1195 return 0; 1196 } 1197 1198 /* Below code is only for non pended DCMD */ 1199 if (!instance->mask_interrupts) 1200 ret = megasas_issue_blocked_cmd(instance, cmd, 1201 MFI_IO_TIMEOUT_SECS); 1202 else 1203 ret = megasas_issue_polled(instance, cmd); 1204 1205 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) { 1206 dev_warn(&instance->pdev->dev, 1207 "driver supports max %d JBOD, but FW reports %d\n", 1208 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count)); 1209 ret = -EINVAL; 1210 } 1211 1212 if (ret == DCMD_TIMEOUT) 1213 megaraid_sas_kill_hba(instance); 1214 1215 if (ret == DCMD_SUCCESS) 1216 instance->pd_seq_map_id++; 1217 1218 megasas_return_cmd(instance, cmd); 1219 return ret; 1220 } 1221 1222 /* 1223 * megasas_get_ld_map_info - Returns FW's ld_map structure 1224 * @instance: Adapter soft state 1225 * @pend: Pend the command or not 1226 * Issues an internal command (DCMD) to get the FW's controller PD 1227 * list structure. This information is mainly used to find out SYSTEM 1228 * supported by the FW. 1229 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO 1230 * dcmd.mbox.b[0] - number of LDs being sync'd 1231 * dcmd.mbox.b[1] - 0 - complete command immediately. 1232 * - 1 - pend till config change 1233 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP 1234 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and 1235 * uses extended struct MR_FW_RAID_MAP_EXT 1236 */ 1237 static int 1238 megasas_get_ld_map_info(struct megasas_instance *instance) 1239 { 1240 int ret = 0; 1241 struct megasas_cmd *cmd; 1242 struct megasas_dcmd_frame *dcmd; 1243 void *ci; 1244 dma_addr_t ci_h = 0; 1245 u32 size_map_info; 1246 struct fusion_context *fusion; 1247 1248 cmd = megasas_get_cmd(instance); 1249 1250 if (!cmd) { 1251 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n"); 1252 return -ENOMEM; 1253 } 1254 1255 fusion = instance->ctrl_context; 1256 1257 if (!fusion) { 1258 megasas_return_cmd(instance, cmd); 1259 return -ENXIO; 1260 } 1261 1262 dcmd = &cmd->frame->dcmd; 1263 1264 size_map_info = fusion->current_map_sz; 1265 1266 ci = (void *) fusion->ld_map[(instance->map_id & 1)]; 1267 ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; 1268 1269 if (!ci) { 1270 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n"); 1271 megasas_return_cmd(instance, cmd); 1272 return -ENOMEM; 1273 } 1274 1275 memset(ci, 0, fusion->max_map_sz); 1276 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1277 dcmd->cmd = MFI_CMD_DCMD; 1278 dcmd->cmd_status = 0xFF; 1279 dcmd->sge_count = 1; 1280 dcmd->flags = MFI_FRAME_DIR_READ; 1281 dcmd->timeout = 0; 1282 dcmd->pad_0 = 0; 1283 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1284 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1285 1286 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1287 1288 if (!instance->mask_interrupts) 1289 ret = megasas_issue_blocked_cmd(instance, cmd, 1290 MFI_IO_TIMEOUT_SECS); 1291 else 1292 ret = megasas_issue_polled(instance, cmd); 1293 1294 if (ret == DCMD_TIMEOUT) 1295 megaraid_sas_kill_hba(instance); 1296 1297 megasas_return_cmd(instance, cmd); 1298 1299 return ret; 1300 } 1301 1302 u8 1303 megasas_get_map_info(struct megasas_instance *instance) 1304 { 1305 struct fusion_context *fusion = instance->ctrl_context; 1306 1307 fusion->fast_path_io = 0; 1308 if (!megasas_get_ld_map_info(instance)) { 1309 if (MR_ValidateMapInfo(instance, instance->map_id)) { 1310 fusion->fast_path_io = 1; 1311 return 0; 1312 } 1313 } 1314 return 1; 1315 } 1316 1317 /* 1318 * megasas_sync_map_info - Returns FW's ld_map structure 1319 * @instance: Adapter soft state 1320 * 1321 * Issues an internal command (DCMD) to get the FW's controller PD 1322 * list structure. This information is mainly used to find out SYSTEM 1323 * supported by the FW. 1324 */ 1325 int 1326 megasas_sync_map_info(struct megasas_instance *instance) 1327 { 1328 int i; 1329 struct megasas_cmd *cmd; 1330 struct megasas_dcmd_frame *dcmd; 1331 u16 num_lds; 1332 u32 size_sync_info; 1333 struct fusion_context *fusion; 1334 struct MR_LD_TARGET_SYNC *ci = NULL; 1335 struct MR_DRV_RAID_MAP_ALL *map; 1336 struct MR_LD_RAID *raid; 1337 struct MR_LD_TARGET_SYNC *ld_sync; 1338 dma_addr_t ci_h = 0; 1339 u32 size_map_info; 1340 1341 cmd = megasas_get_cmd(instance); 1342 1343 if (!cmd) { 1344 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n"); 1345 return -ENOMEM; 1346 } 1347 1348 fusion = instance->ctrl_context; 1349 1350 if (!fusion) { 1351 megasas_return_cmd(instance, cmd); 1352 return 1; 1353 } 1354 1355 map = fusion->ld_drv_map[instance->map_id & 1]; 1356 1357 num_lds = le16_to_cpu(map->raidMap.ldCount); 1358 1359 dcmd = &cmd->frame->dcmd; 1360 1361 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; 1362 1363 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1364 1365 ci = (struct MR_LD_TARGET_SYNC *) 1366 fusion->ld_map[(instance->map_id - 1) & 1]; 1367 memset(ci, 0, fusion->max_map_sz); 1368 1369 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; 1370 1371 ld_sync = (struct MR_LD_TARGET_SYNC *)ci; 1372 1373 for (i = 0; i < num_lds; i++, ld_sync++) { 1374 raid = MR_LdRaidGet(i, map); 1375 ld_sync->targetId = MR_GetLDTgtId(i, map); 1376 ld_sync->seqNum = raid->seqNum; 1377 } 1378 1379 size_map_info = fusion->current_map_sz; 1380 1381 dcmd->cmd = MFI_CMD_DCMD; 1382 dcmd->cmd_status = 0xFF; 1383 dcmd->sge_count = 1; 1384 dcmd->flags = MFI_FRAME_DIR_WRITE; 1385 dcmd->timeout = 0; 1386 dcmd->pad_0 = 0; 1387 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1388 dcmd->mbox.b[0] = num_lds; 1389 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1390 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1391 1392 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1393 1394 instance->map_update_cmd = cmd; 1395 1396 instance->instancet->issue_dcmd(instance, cmd); 1397 1398 return 0; 1399 } 1400 1401 /* 1402 * meagasas_display_intel_branding - Display branding string 1403 * @instance: per adapter object 1404 * 1405 * Return nothing. 1406 */ 1407 static void 1408 megasas_display_intel_branding(struct megasas_instance *instance) 1409 { 1410 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) 1411 return; 1412 1413 switch (instance->pdev->device) { 1414 case PCI_DEVICE_ID_LSI_INVADER: 1415 switch (instance->pdev->subsystem_device) { 1416 case MEGARAID_INTEL_RS3DC080_SSDID: 1417 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1418 instance->host->host_no, 1419 MEGARAID_INTEL_RS3DC080_BRANDING); 1420 break; 1421 case MEGARAID_INTEL_RS3DC040_SSDID: 1422 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1423 instance->host->host_no, 1424 MEGARAID_INTEL_RS3DC040_BRANDING); 1425 break; 1426 case MEGARAID_INTEL_RS3SC008_SSDID: 1427 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1428 instance->host->host_no, 1429 MEGARAID_INTEL_RS3SC008_BRANDING); 1430 break; 1431 case MEGARAID_INTEL_RS3MC044_SSDID: 1432 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1433 instance->host->host_no, 1434 MEGARAID_INTEL_RS3MC044_BRANDING); 1435 break; 1436 default: 1437 break; 1438 } 1439 break; 1440 case PCI_DEVICE_ID_LSI_FURY: 1441 switch (instance->pdev->subsystem_device) { 1442 case MEGARAID_INTEL_RS3WC080_SSDID: 1443 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1444 instance->host->host_no, 1445 MEGARAID_INTEL_RS3WC080_BRANDING); 1446 break; 1447 case MEGARAID_INTEL_RS3WC040_SSDID: 1448 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1449 instance->host->host_no, 1450 MEGARAID_INTEL_RS3WC040_BRANDING); 1451 break; 1452 default: 1453 break; 1454 } 1455 break; 1456 case PCI_DEVICE_ID_LSI_CUTLASS_52: 1457 case PCI_DEVICE_ID_LSI_CUTLASS_53: 1458 switch (instance->pdev->subsystem_device) { 1459 case MEGARAID_INTEL_RMS3BC160_SSDID: 1460 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1461 instance->host->host_no, 1462 MEGARAID_INTEL_RMS3BC160_BRANDING); 1463 break; 1464 default: 1465 break; 1466 } 1467 break; 1468 default: 1469 break; 1470 } 1471 } 1472 1473 /** 1474 * megasas_allocate_raid_maps - Allocate memory for RAID maps 1475 * @instance: Adapter soft state 1476 * 1477 * return: if success: return 0 1478 * failed: return -ENOMEM 1479 */ 1480 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) 1481 { 1482 struct fusion_context *fusion; 1483 int i = 0; 1484 1485 fusion = instance->ctrl_context; 1486 1487 fusion->drv_map_pages = get_order(fusion->drv_map_sz); 1488 1489 for (i = 0; i < 2; i++) { 1490 fusion->ld_map[i] = NULL; 1491 1492 fusion->ld_drv_map[i] = (void *) 1493 __get_free_pages(__GFP_ZERO | GFP_KERNEL, 1494 fusion->drv_map_pages); 1495 1496 if (!fusion->ld_drv_map[i]) { 1497 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); 1498 1499 if (!fusion->ld_drv_map[i]) { 1500 dev_err(&instance->pdev->dev, 1501 "Could not allocate memory for local map" 1502 " size requested: %d\n", 1503 fusion->drv_map_sz); 1504 goto ld_drv_map_alloc_fail; 1505 } 1506 } 1507 } 1508 1509 for (i = 0; i < 2; i++) { 1510 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, 1511 fusion->max_map_sz, 1512 &fusion->ld_map_phys[i], 1513 GFP_KERNEL); 1514 if (!fusion->ld_map[i]) { 1515 dev_err(&instance->pdev->dev, 1516 "Could not allocate memory for map info %s:%d\n", 1517 __func__, __LINE__); 1518 goto ld_map_alloc_fail; 1519 } 1520 } 1521 1522 return 0; 1523 1524 ld_map_alloc_fail: 1525 for (i = 0; i < 2; i++) { 1526 if (fusion->ld_map[i]) 1527 dma_free_coherent(&instance->pdev->dev, 1528 fusion->max_map_sz, 1529 fusion->ld_map[i], 1530 fusion->ld_map_phys[i]); 1531 } 1532 1533 ld_drv_map_alloc_fail: 1534 for (i = 0; i < 2; i++) { 1535 if (fusion->ld_drv_map[i]) { 1536 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 1537 vfree(fusion->ld_drv_map[i]); 1538 else 1539 free_pages((ulong)fusion->ld_drv_map[i], 1540 fusion->drv_map_pages); 1541 } 1542 } 1543 1544 return -ENOMEM; 1545 } 1546 1547 /** 1548 * megasas_configure_queue_sizes - Calculate size of request desc queue, 1549 * reply desc queue, 1550 * IO request frame queue, set can_queue. 1551 * @instance: Adapter soft state 1552 * @return: void 1553 */ 1554 static inline 1555 void megasas_configure_queue_sizes(struct megasas_instance *instance) 1556 { 1557 struct fusion_context *fusion; 1558 u16 max_cmd; 1559 1560 fusion = instance->ctrl_context; 1561 max_cmd = instance->max_fw_cmds; 1562 1563 if (instance->adapter_type == VENTURA_SERIES) 1564 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS; 1565 else 1566 instance->max_mpt_cmds = instance->max_fw_cmds; 1567 1568 instance->max_scsi_cmds = instance->max_fw_cmds - 1569 (MEGASAS_FUSION_INTERNAL_CMDS + 1570 MEGASAS_FUSION_IOCTL_CMDS); 1571 instance->cur_can_queue = instance->max_scsi_cmds; 1572 instance->host->can_queue = instance->cur_can_queue; 1573 1574 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16; 1575 1576 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * 1577 instance->max_mpt_cmds; 1578 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) * 1579 (fusion->reply_q_depth); 1580 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + 1581 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1582 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */ 1583 } 1584 1585 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance) 1586 { 1587 struct fusion_context *fusion; 1588 struct megasas_cmd *cmd; 1589 1590 fusion = instance->ctrl_context; 1591 1592 cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL); 1593 1594 if (!cmd) { 1595 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1596 __func__, __LINE__); 1597 return -ENOMEM; 1598 } 1599 1600 cmd->frame = dma_alloc_coherent(&instance->pdev->dev, 1601 IOC_INIT_FRAME_SIZE, 1602 &cmd->frame_phys_addr, GFP_KERNEL); 1603 1604 if (!cmd->frame) { 1605 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1606 __func__, __LINE__); 1607 kfree(cmd); 1608 return -ENOMEM; 1609 } 1610 1611 fusion->ioc_init_cmd = cmd; 1612 return 0; 1613 } 1614 1615 /** 1616 * megasas_free_ioc_init_cmd - Free IOC INIT command frame 1617 * @instance: Adapter soft state 1618 */ 1619 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance) 1620 { 1621 struct fusion_context *fusion; 1622 1623 fusion = instance->ctrl_context; 1624 1625 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame) 1626 dma_free_coherent(&instance->pdev->dev, 1627 IOC_INIT_FRAME_SIZE, 1628 fusion->ioc_init_cmd->frame, 1629 fusion->ioc_init_cmd->frame_phys_addr); 1630 1631 if (fusion->ioc_init_cmd) 1632 kfree(fusion->ioc_init_cmd); 1633 } 1634 1635 /** 1636 * megasas_init_adapter_fusion - Initializes the FW 1637 * @instance: Adapter soft state 1638 * 1639 * This is the main function for initializing firmware. 1640 */ 1641 u32 1642 megasas_init_adapter_fusion(struct megasas_instance *instance) 1643 { 1644 struct megasas_register_set __iomem *reg_set; 1645 struct fusion_context *fusion; 1646 u32 scratch_pad_2; 1647 int i = 0, count; 1648 1649 fusion = instance->ctrl_context; 1650 1651 reg_set = instance->reg_set; 1652 1653 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT); 1654 1655 /* 1656 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames 1657 */ 1658 instance->max_mfi_cmds = 1659 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS; 1660 1661 megasas_configure_queue_sizes(instance); 1662 1663 scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2); 1664 /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set, 1665 * Firmware support extended IO chain frame which is 4 times more than 1666 * legacy Firmware. 1667 * Legacy Firmware - Frame size is (8 * 128) = 1K 1668 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K 1669 */ 1670 if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK) 1671 instance->max_chain_frame_sz = 1672 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1673 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO; 1674 else 1675 instance->max_chain_frame_sz = 1676 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1677 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO; 1678 1679 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) { 1680 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n", 1681 instance->max_chain_frame_sz, 1682 MEGASAS_CHAIN_FRAME_SZ_MIN); 1683 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN; 1684 } 1685 1686 fusion->max_sge_in_main_msg = 1687 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1688 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; 1689 1690 fusion->max_sge_in_chain = 1691 instance->max_chain_frame_sz 1692 / sizeof(union MPI2_SGE_IO_UNION); 1693 1694 instance->max_num_sge = 1695 rounddown_pow_of_two(fusion->max_sge_in_main_msg 1696 + fusion->max_sge_in_chain - 2); 1697 1698 /* Used for pass thru MFI frame (DCMD) */ 1699 fusion->chain_offset_mfi_pthru = 1700 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; 1701 1702 fusion->chain_offset_io_request = 1703 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - 1704 sizeof(union MPI2_SGE_IO_UNION))/16; 1705 1706 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 1707 for (i = 0 ; i < count; i++) 1708 fusion->last_reply_idx[i] = 0; 1709 1710 /* 1711 * For fusion adapters, 3 commands for IOCTL and 8 commands 1712 * for driver's internal DCMDs. 1713 */ 1714 instance->max_scsi_cmds = instance->max_fw_cmds - 1715 (MEGASAS_FUSION_INTERNAL_CMDS + 1716 MEGASAS_FUSION_IOCTL_CMDS); 1717 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); 1718 1719 if (megasas_alloc_ioc_init_frame(instance)) 1720 return 1; 1721 1722 /* 1723 * Allocate memory for descriptors 1724 * Create a pool of commands 1725 */ 1726 if (megasas_alloc_cmds(instance)) 1727 goto fail_alloc_mfi_cmds; 1728 if (megasas_alloc_cmds_fusion(instance)) 1729 goto fail_alloc_cmds; 1730 1731 if (megasas_ioc_init_fusion(instance)) 1732 goto fail_ioc_init; 1733 1734 megasas_display_intel_branding(instance); 1735 if (megasas_get_ctrl_info(instance)) { 1736 dev_err(&instance->pdev->dev, 1737 "Could not get controller info. Fail from %s %d\n", 1738 __func__, __LINE__); 1739 goto fail_ioc_init; 1740 } 1741 1742 instance->flag_ieee = 1; 1743 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; 1744 fusion->fast_path_io = 0; 1745 1746 if (megasas_allocate_raid_maps(instance)) 1747 goto fail_ioc_init; 1748 1749 if (!megasas_get_map_info(instance)) 1750 megasas_sync_map_info(instance); 1751 1752 return 0; 1753 1754 fail_ioc_init: 1755 megasas_free_cmds_fusion(instance); 1756 fail_alloc_cmds: 1757 megasas_free_cmds(instance); 1758 fail_alloc_mfi_cmds: 1759 megasas_free_ioc_init_cmd(instance); 1760 return 1; 1761 } 1762 1763 /** 1764 * map_cmd_status - Maps FW cmd status to OS cmd status 1765 * @cmd : Pointer to cmd 1766 * @status : status of cmd returned by FW 1767 * @ext_status : ext status of cmd returned by FW 1768 */ 1769 1770 void 1771 map_cmd_status(struct fusion_context *fusion, 1772 struct scsi_cmnd *scmd, u8 status, u8 ext_status, 1773 u32 data_length, u8 *sense) 1774 { 1775 u8 cmd_type; 1776 int resid; 1777 1778 cmd_type = megasas_cmd_type(scmd); 1779 switch (status) { 1780 1781 case MFI_STAT_OK: 1782 scmd->result = DID_OK << 16; 1783 break; 1784 1785 case MFI_STAT_SCSI_IO_FAILED: 1786 case MFI_STAT_LD_INIT_IN_PROGRESS: 1787 scmd->result = (DID_ERROR << 16) | ext_status; 1788 break; 1789 1790 case MFI_STAT_SCSI_DONE_WITH_ERROR: 1791 1792 scmd->result = (DID_OK << 16) | ext_status; 1793 if (ext_status == SAM_STAT_CHECK_CONDITION) { 1794 memset(scmd->sense_buffer, 0, 1795 SCSI_SENSE_BUFFERSIZE); 1796 memcpy(scmd->sense_buffer, sense, 1797 SCSI_SENSE_BUFFERSIZE); 1798 scmd->result |= DRIVER_SENSE << 24; 1799 } 1800 1801 /* 1802 * If the IO request is partially completed, then MR FW will 1803 * update "io_request->DataLength" field with actual number of 1804 * bytes transferred.Driver will set residual bytes count in 1805 * SCSI command structure. 1806 */ 1807 resid = (scsi_bufflen(scmd) - data_length); 1808 scsi_set_resid(scmd, resid); 1809 1810 if (resid && 1811 ((cmd_type == READ_WRITE_LDIO) || 1812 (cmd_type == READ_WRITE_SYSPDIO))) 1813 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" 1814 " requested/completed 0x%x/0x%x\n", 1815 status, scsi_bufflen(scmd), data_length); 1816 break; 1817 1818 case MFI_STAT_LD_OFFLINE: 1819 case MFI_STAT_DEVICE_NOT_FOUND: 1820 scmd->result = DID_BAD_TARGET << 16; 1821 break; 1822 case MFI_STAT_CONFIG_SEQ_MISMATCH: 1823 scmd->result = DID_IMM_RETRY << 16; 1824 break; 1825 default: 1826 scmd->result = DID_ERROR << 16; 1827 break; 1828 } 1829 } 1830 1831 /** 1832 * megasas_is_prp_possible - 1833 * Checks if native NVMe PRPs can be built for the IO 1834 * 1835 * @instance: Adapter soft state 1836 * @scmd: SCSI command from the mid-layer 1837 * @sge_count: scatter gather element count. 1838 * 1839 * Returns: true: PRPs can be built 1840 * false: IEEE SGLs needs to be built 1841 */ 1842 static bool 1843 megasas_is_prp_possible(struct megasas_instance *instance, 1844 struct scsi_cmnd *scmd, int sge_count) 1845 { 1846 struct fusion_context *fusion; 1847 int i; 1848 u32 data_length = 0; 1849 struct scatterlist *sg_scmd; 1850 bool build_prp = false; 1851 u32 mr_nvme_pg_size; 1852 1853 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1854 MR_DEFAULT_NVME_PAGE_SIZE); 1855 fusion = instance->ctrl_context; 1856 data_length = scsi_bufflen(scmd); 1857 sg_scmd = scsi_sglist(scmd); 1858 1859 /* 1860 * NVMe uses one PRP for each page (or part of a page) 1861 * look at the data length - if 4 pages or less then IEEE is OK 1862 * if > 5 pages then we need to build a native SGL 1863 * if > 4 and <= 5 pages, then check physical address of 1st SG entry 1864 * if this first size in the page is >= the residual beyond 4 pages 1865 * then use IEEE, otherwise use native SGL 1866 */ 1867 1868 if (data_length > (mr_nvme_pg_size * 5)) { 1869 build_prp = true; 1870 } else if ((data_length > (mr_nvme_pg_size * 4)) && 1871 (data_length <= (mr_nvme_pg_size * 5))) { 1872 /* check if 1st SG entry size is < residual beyond 4 pages */ 1873 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) 1874 build_prp = true; 1875 } 1876 1877 /* 1878 * Below code detects gaps/holes in IO data buffers. 1879 * What does holes/gaps mean? 1880 * Any SGE except first one in a SGL starts at non NVME page size 1881 * aligned address OR Any SGE except last one in a SGL ends at 1882 * non NVME page size boundary. 1883 * 1884 * Driver has already informed block layer by setting boundary rules for 1885 * bio merging done at NVME page size boundary calling kernel API 1886 * blk_queue_virt_boundary inside slave_config. 1887 * Still there is possibility of IO coming with holes to driver because of 1888 * IO merging done by IO scheduler. 1889 * 1890 * With SCSI BLK MQ enabled, there will be no IO with holes as there is no 1891 * IO scheduling so no IO merging. 1892 * 1893 * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and 1894 * then sending IOs with holes. 1895 * 1896 * Though driver can request block layer to disable IO merging by calling- 1897 * queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, sdev->request_queue) but 1898 * user may tune sysfs parameter- nomerges again to 0 or 1. 1899 * 1900 * If in future IO scheduling is enabled with SCSI BLK MQ, 1901 * this algorithm to detect holes will be required in driver 1902 * for SCSI BLK MQ enabled case as well. 1903 * 1904 * 1905 */ 1906 scsi_for_each_sg(scmd, sg_scmd, sge_count, i) { 1907 if ((i != 0) && (i != (sge_count - 1))) { 1908 if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) || 1909 mega_mod64(sg_dma_address(sg_scmd), 1910 mr_nvme_pg_size)) { 1911 build_prp = false; 1912 atomic_inc(&instance->sge_holes_type1); 1913 break; 1914 } 1915 } 1916 1917 if ((sge_count > 1) && (i == 0)) { 1918 if ((mega_mod64((sg_dma_address(sg_scmd) + 1919 sg_dma_len(sg_scmd)), 1920 mr_nvme_pg_size))) { 1921 build_prp = false; 1922 atomic_inc(&instance->sge_holes_type2); 1923 break; 1924 } 1925 } 1926 1927 if ((sge_count > 1) && (i == (sge_count - 1))) { 1928 if (mega_mod64(sg_dma_address(sg_scmd), 1929 mr_nvme_pg_size)) { 1930 build_prp = false; 1931 atomic_inc(&instance->sge_holes_type3); 1932 break; 1933 } 1934 } 1935 } 1936 1937 return build_prp; 1938 } 1939 1940 /** 1941 * megasas_make_prp_nvme - 1942 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only 1943 * 1944 * @instance: Adapter soft state 1945 * @scmd: SCSI command from the mid-layer 1946 * @sgl_ptr: SGL to be filled in 1947 * @cmd: Fusion command frame 1948 * @sge_count: scatter gather element count. 1949 * 1950 * Returns: true: PRPs are built 1951 * false: IEEE SGLs needs to be built 1952 */ 1953 static bool 1954 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, 1955 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 1956 struct megasas_cmd_fusion *cmd, int sge_count) 1957 { 1958 int sge_len, offset, num_prp_in_chain = 0; 1959 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; 1960 u64 *ptr_sgl; 1961 dma_addr_t ptr_sgl_phys; 1962 u64 sge_addr; 1963 u32 page_mask, page_mask_result; 1964 struct scatterlist *sg_scmd; 1965 u32 first_prp_len; 1966 bool build_prp = false; 1967 int data_len = scsi_bufflen(scmd); 1968 struct fusion_context *fusion; 1969 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1970 MR_DEFAULT_NVME_PAGE_SIZE); 1971 1972 fusion = instance->ctrl_context; 1973 1974 build_prp = megasas_is_prp_possible(instance, scmd, sge_count); 1975 1976 if (!build_prp) 1977 return false; 1978 1979 /* 1980 * Nvme has a very convoluted prp format. One prp is required 1981 * for each page or partial page. Driver need to split up OS sg_list 1982 * entries if it is longer than one page or cross a page 1983 * boundary. Driver also have to insert a PRP list pointer entry as 1984 * the last entry in each physical page of the PRP list. 1985 * 1986 * NOTE: The first PRP "entry" is actually placed in the first 1987 * SGL entry in the main message as IEEE 64 format. The 2nd 1988 * entry in the main message is the chain element, and the rest 1989 * of the PRP entries are built in the contiguous pcie buffer. 1990 */ 1991 page_mask = mr_nvme_pg_size - 1; 1992 ptr_sgl = (u64 *)cmd->sg_frame; 1993 ptr_sgl_phys = cmd->sg_frame_phys_addr; 1994 memset(ptr_sgl, 0, instance->max_chain_frame_sz); 1995 1996 /* Build chain frame element which holds all prps except first*/ 1997 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) 1998 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); 1999 2000 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); 2001 main_chain_element->NextChainOffset = 0; 2002 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2003 IEEE_SGE_FLAGS_SYSTEM_ADDR | 2004 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; 2005 2006 /* Build first prp, sge need not to be page aligned*/ 2007 ptr_first_sgl = sgl_ptr; 2008 sg_scmd = scsi_sglist(scmd); 2009 sge_addr = sg_dma_address(sg_scmd); 2010 sge_len = sg_dma_len(sg_scmd); 2011 2012 offset = (u32)(sge_addr & page_mask); 2013 first_prp_len = mr_nvme_pg_size - offset; 2014 2015 ptr_first_sgl->Address = cpu_to_le64(sge_addr); 2016 ptr_first_sgl->Length = cpu_to_le32(first_prp_len); 2017 2018 data_len -= first_prp_len; 2019 2020 if (sge_len > first_prp_len) { 2021 sge_addr += first_prp_len; 2022 sge_len -= first_prp_len; 2023 } else if (sge_len == first_prp_len) { 2024 sg_scmd = sg_next(sg_scmd); 2025 sge_addr = sg_dma_address(sg_scmd); 2026 sge_len = sg_dma_len(sg_scmd); 2027 } 2028 2029 for (;;) { 2030 offset = (u32)(sge_addr & page_mask); 2031 2032 /* Put PRP pointer due to page boundary*/ 2033 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; 2034 if (unlikely(!page_mask_result)) { 2035 scmd_printk(KERN_NOTICE, 2036 scmd, "page boundary ptr_sgl: 0x%p\n", 2037 ptr_sgl); 2038 ptr_sgl_phys += 8; 2039 *ptr_sgl = cpu_to_le64(ptr_sgl_phys); 2040 ptr_sgl++; 2041 num_prp_in_chain++; 2042 } 2043 2044 *ptr_sgl = cpu_to_le64(sge_addr); 2045 ptr_sgl++; 2046 ptr_sgl_phys += 8; 2047 num_prp_in_chain++; 2048 2049 sge_addr += mr_nvme_pg_size; 2050 sge_len -= mr_nvme_pg_size; 2051 data_len -= mr_nvme_pg_size; 2052 2053 if (data_len <= 0) 2054 break; 2055 2056 if (sge_len > 0) 2057 continue; 2058 2059 sg_scmd = sg_next(sg_scmd); 2060 sge_addr = sg_dma_address(sg_scmd); 2061 sge_len = sg_dma_len(sg_scmd); 2062 } 2063 2064 main_chain_element->Length = 2065 cpu_to_le32(num_prp_in_chain * sizeof(u64)); 2066 2067 atomic_inc(&instance->prp_sgl); 2068 return build_prp; 2069 } 2070 2071 /** 2072 * megasas_make_sgl_fusion - Prepares 32-bit SGL 2073 * @instance: Adapter soft state 2074 * @scp: SCSI command from the mid-layer 2075 * @sgl_ptr: SGL to be filled in 2076 * @cmd: cmd we are working on 2077 * @sge_count sge count 2078 * 2079 */ 2080 static void 2081 megasas_make_sgl_fusion(struct megasas_instance *instance, 2082 struct scsi_cmnd *scp, 2083 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2084 struct megasas_cmd_fusion *cmd, int sge_count) 2085 { 2086 int i, sg_processed; 2087 struct scatterlist *os_sgl; 2088 struct fusion_context *fusion; 2089 2090 fusion = instance->ctrl_context; 2091 2092 if (instance->adapter_type >= INVADER_SERIES) { 2093 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; 2094 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 2095 sgl_ptr_end->Flags = 0; 2096 } 2097 2098 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 2099 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); 2100 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); 2101 sgl_ptr->Flags = 0; 2102 if (instance->adapter_type >= INVADER_SERIES) 2103 if (i == sge_count - 1) 2104 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; 2105 sgl_ptr++; 2106 sg_processed = i + 1; 2107 2108 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && 2109 (sge_count > fusion->max_sge_in_main_msg)) { 2110 2111 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; 2112 if (instance->adapter_type >= INVADER_SERIES) { 2113 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2114 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != 2115 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) 2116 cmd->io_request->ChainOffset = 2117 fusion-> 2118 chain_offset_io_request; 2119 else 2120 cmd->io_request->ChainOffset = 0; 2121 } else 2122 cmd->io_request->ChainOffset = 2123 fusion->chain_offset_io_request; 2124 2125 sg_chain = sgl_ptr; 2126 /* Prepare chain element */ 2127 sg_chain->NextChainOffset = 0; 2128 if (instance->adapter_type >= INVADER_SERIES) 2129 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; 2130 else 2131 sg_chain->Flags = 2132 (IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2133 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); 2134 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); 2135 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); 2136 2137 sgl_ptr = 2138 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; 2139 memset(sgl_ptr, 0, instance->max_chain_frame_sz); 2140 } 2141 } 2142 atomic_inc(&instance->ieee_sgl); 2143 } 2144 2145 /** 2146 * megasas_make_sgl - Build Scatter Gather List(SGLs) 2147 * @scp: SCSI command pointer 2148 * @instance: Soft instance of controller 2149 * @cmd: Fusion command pointer 2150 * 2151 * This function will build sgls based on device type. 2152 * For nvme drives, there is different way of building sgls in nvme native 2153 * format- PRPs(Physical Region Page). 2154 * 2155 * Returns the number of sg lists actually used, zero if the sg lists 2156 * is NULL, or -ENOMEM if the mapping failed 2157 */ 2158 static 2159 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, 2160 struct megasas_cmd_fusion *cmd) 2161 { 2162 int sge_count; 2163 bool build_prp = false; 2164 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; 2165 2166 sge_count = scsi_dma_map(scp); 2167 2168 if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) 2169 return sge_count; 2170 2171 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; 2172 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2173 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && 2174 (cmd->pd_interface == NVME_PD)) 2175 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, 2176 cmd, sge_count); 2177 2178 if (!build_prp) 2179 megasas_make_sgl_fusion(instance, scp, sgl_chain64, 2180 cmd, sge_count); 2181 2182 return sge_count; 2183 } 2184 2185 /** 2186 * megasas_set_pd_lba - Sets PD LBA 2187 * @cdb: CDB 2188 * @cdb_len: cdb length 2189 * @start_blk: Start block of IO 2190 * 2191 * Used to set the PD LBA in CDB for FP IOs 2192 */ 2193 void 2194 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, 2195 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, 2196 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) 2197 { 2198 struct MR_LD_RAID *raid; 2199 u16 ld; 2200 u64 start_blk = io_info->pdBlock; 2201 u8 *cdb = io_request->CDB.CDB32; 2202 u32 num_blocks = io_info->numBlocks; 2203 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; 2204 2205 /* Check if T10 PI (DIF) is enabled for this LD */ 2206 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); 2207 raid = MR_LdRaidGet(ld, local_map_ptr); 2208 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { 2209 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2210 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; 2211 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; 2212 2213 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 2214 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; 2215 else 2216 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; 2217 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; 2218 2219 /* LBA */ 2220 cdb[12] = (u8)((start_blk >> 56) & 0xff); 2221 cdb[13] = (u8)((start_blk >> 48) & 0xff); 2222 cdb[14] = (u8)((start_blk >> 40) & 0xff); 2223 cdb[15] = (u8)((start_blk >> 32) & 0xff); 2224 cdb[16] = (u8)((start_blk >> 24) & 0xff); 2225 cdb[17] = (u8)((start_blk >> 16) & 0xff); 2226 cdb[18] = (u8)((start_blk >> 8) & 0xff); 2227 cdb[19] = (u8)(start_blk & 0xff); 2228 2229 /* Logical block reference tag */ 2230 io_request->CDB.EEDP32.PrimaryReferenceTag = 2231 cpu_to_be32(ref_tag); 2232 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); 2233 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ 2234 2235 /* Transfer length */ 2236 cdb[28] = (u8)((num_blocks >> 24) & 0xff); 2237 cdb[29] = (u8)((num_blocks >> 16) & 0xff); 2238 cdb[30] = (u8)((num_blocks >> 8) & 0xff); 2239 cdb[31] = (u8)(num_blocks & 0xff); 2240 2241 /* set SCSI IO EEDPFlags */ 2242 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) { 2243 io_request->EEDPFlags = cpu_to_le16( 2244 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2245 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | 2246 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | 2247 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | 2248 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | 2249 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); 2250 } else { 2251 io_request->EEDPFlags = cpu_to_le16( 2252 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2253 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); 2254 } 2255 io_request->Control |= cpu_to_le32((0x4 << 26)); 2256 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); 2257 } else { 2258 /* Some drives don't support 16/12 byte CDB's, convert to 10 */ 2259 if (((cdb_len == 12) || (cdb_len == 16)) && 2260 (start_blk <= 0xffffffff)) { 2261 if (cdb_len == 16) { 2262 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; 2263 flagvals = cdb[1]; 2264 groupnum = cdb[14]; 2265 control = cdb[15]; 2266 } else { 2267 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; 2268 flagvals = cdb[1]; 2269 groupnum = cdb[10]; 2270 control = cdb[11]; 2271 } 2272 2273 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2274 2275 cdb[0] = opcode; 2276 cdb[1] = flagvals; 2277 cdb[6] = groupnum; 2278 cdb[9] = control; 2279 2280 /* Transfer length */ 2281 cdb[8] = (u8)(num_blocks & 0xff); 2282 cdb[7] = (u8)((num_blocks >> 8) & 0xff); 2283 2284 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ 2285 cdb_len = 10; 2286 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { 2287 /* Convert to 16 byte CDB for large LBA's */ 2288 switch (cdb_len) { 2289 case 6: 2290 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; 2291 control = cdb[5]; 2292 break; 2293 case 10: 2294 opcode = 2295 cdb[0] == READ_10 ? READ_16 : WRITE_16; 2296 flagvals = cdb[1]; 2297 groupnum = cdb[6]; 2298 control = cdb[9]; 2299 break; 2300 case 12: 2301 opcode = 2302 cdb[0] == READ_12 ? READ_16 : WRITE_16; 2303 flagvals = cdb[1]; 2304 groupnum = cdb[10]; 2305 control = cdb[11]; 2306 break; 2307 } 2308 2309 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2310 2311 cdb[0] = opcode; 2312 cdb[1] = flagvals; 2313 cdb[14] = groupnum; 2314 cdb[15] = control; 2315 2316 /* Transfer length */ 2317 cdb[13] = (u8)(num_blocks & 0xff); 2318 cdb[12] = (u8)((num_blocks >> 8) & 0xff); 2319 cdb[11] = (u8)((num_blocks >> 16) & 0xff); 2320 cdb[10] = (u8)((num_blocks >> 24) & 0xff); 2321 2322 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ 2323 cdb_len = 16; 2324 } 2325 2326 /* Normal case, just load LBA here */ 2327 switch (cdb_len) { 2328 case 6: 2329 { 2330 u8 val = cdb[1] & 0xE0; 2331 cdb[3] = (u8)(start_blk & 0xff); 2332 cdb[2] = (u8)((start_blk >> 8) & 0xff); 2333 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); 2334 break; 2335 } 2336 case 10: 2337 cdb[5] = (u8)(start_blk & 0xff); 2338 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2339 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2340 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2341 break; 2342 case 12: 2343 cdb[5] = (u8)(start_blk & 0xff); 2344 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2345 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2346 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2347 break; 2348 case 16: 2349 cdb[9] = (u8)(start_blk & 0xff); 2350 cdb[8] = (u8)((start_blk >> 8) & 0xff); 2351 cdb[7] = (u8)((start_blk >> 16) & 0xff); 2352 cdb[6] = (u8)((start_blk >> 24) & 0xff); 2353 cdb[5] = (u8)((start_blk >> 32) & 0xff); 2354 cdb[4] = (u8)((start_blk >> 40) & 0xff); 2355 cdb[3] = (u8)((start_blk >> 48) & 0xff); 2356 cdb[2] = (u8)((start_blk >> 56) & 0xff); 2357 break; 2358 } 2359 } 2360 } 2361 2362 /** 2363 * megasas_stream_detect - stream detection on read and and write IOs 2364 * @instance: Adapter soft state 2365 * @cmd: Command to be prepared 2366 * @io_info: IO Request info 2367 * 2368 */ 2369 2370 /** stream detection on read and and write IOs */ 2371 static void megasas_stream_detect(struct megasas_instance *instance, 2372 struct megasas_cmd_fusion *cmd, 2373 struct IO_REQUEST_INFO *io_info) 2374 { 2375 struct fusion_context *fusion = instance->ctrl_context; 2376 u32 device_id = io_info->ldTgtId; 2377 struct LD_STREAM_DETECT *current_ld_sd 2378 = fusion->stream_detect_by_ld[device_id]; 2379 u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; 2380 u32 shifted_values, unshifted_values; 2381 u32 index_value_mask, shifted_values_mask; 2382 int i; 2383 bool is_read_ahead = false; 2384 struct STREAM_DETECT *current_sd; 2385 /* find possible stream */ 2386 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { 2387 stream_num = (*track_stream >> 2388 (i * BITS_PER_INDEX_STREAM)) & 2389 STREAM_MASK; 2390 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2391 /* if we found a stream, update the raid 2392 * context and also update the mruBitMap 2393 */ 2394 /* boundary condition */ 2395 if ((current_sd->next_seq_lba) && 2396 (io_info->ldStartBlock >= current_sd->next_seq_lba) && 2397 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && 2398 (current_sd->is_read == io_info->isRead)) { 2399 2400 if ((io_info->ldStartBlock != current_sd->next_seq_lba) && 2401 ((!io_info->isRead) || (!is_read_ahead))) 2402 /* 2403 * Once the API availible we need to change this. 2404 * At this point we are not allowing any gap 2405 */ 2406 continue; 2407 2408 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); 2409 current_sd->next_seq_lba = 2410 io_info->ldStartBlock + io_info->numBlocks; 2411 /* 2412 * update the mruBitMap LRU 2413 */ 2414 shifted_values_mask = 2415 (1 << i * BITS_PER_INDEX_STREAM) - 1; 2416 shifted_values = ((*track_stream & shifted_values_mask) 2417 << BITS_PER_INDEX_STREAM); 2418 index_value_mask = 2419 STREAM_MASK << i * BITS_PER_INDEX_STREAM; 2420 unshifted_values = 2421 *track_stream & ~(shifted_values_mask | 2422 index_value_mask); 2423 *track_stream = 2424 unshifted_values | shifted_values | stream_num; 2425 return; 2426 } 2427 } 2428 /* 2429 * if we did not find any stream, create a new one 2430 * from the least recently used 2431 */ 2432 stream_num = (*track_stream >> 2433 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & 2434 STREAM_MASK; 2435 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2436 current_sd->is_read = io_info->isRead; 2437 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; 2438 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); 2439 return; 2440 } 2441 2442 /** 2443 * megasas_set_raidflag_cpu_affinity - This function sets the cpu 2444 * affinity (cpu of the controller) and raid_flags in the raid context 2445 * based on IO type. 2446 * 2447 * @praid_context: IO RAID context 2448 * @raid: LD raid map 2449 * @fp_possible: Is fast path possible? 2450 * @is_read: Is read IO? 2451 * 2452 */ 2453 static void 2454 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context, 2455 struct MR_LD_RAID *raid, bool fp_possible, 2456 u8 is_read, u32 scsi_buff_len) 2457 { 2458 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2459 struct RAID_CONTEXT_G35 *rctx_g35; 2460 2461 rctx_g35 = &praid_context->raid_context_g35; 2462 if (fp_possible) { 2463 if (is_read) { 2464 if ((raid->cpuAffinity.pdRead.cpu0) && 2465 (raid->cpuAffinity.pdRead.cpu1)) 2466 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2467 else if (raid->cpuAffinity.pdRead.cpu1) 2468 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2469 } else { 2470 if ((raid->cpuAffinity.pdWrite.cpu0) && 2471 (raid->cpuAffinity.pdWrite.cpu1)) 2472 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2473 else if (raid->cpuAffinity.pdWrite.cpu1) 2474 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2475 /* Fast path cache by pass capable R0/R1 VD */ 2476 if ((raid->level <= 1) && 2477 (raid->capability.fp_cache_bypass_capable)) { 2478 rctx_g35->routing_flags |= 2479 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); 2480 rctx_g35->raid_flags = 2481 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS 2482 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2483 } 2484 } 2485 } else { 2486 if (is_read) { 2487 if ((raid->cpuAffinity.ldRead.cpu0) && 2488 (raid->cpuAffinity.ldRead.cpu1)) 2489 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2490 else if (raid->cpuAffinity.ldRead.cpu1) 2491 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2492 } else { 2493 if ((raid->cpuAffinity.ldWrite.cpu0) && 2494 (raid->cpuAffinity.ldWrite.cpu1)) 2495 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2496 else if (raid->cpuAffinity.ldWrite.cpu1) 2497 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2498 2499 if (is_stream_detected(rctx_g35) && 2500 ((raid->level == 5) || (raid->level == 6)) && 2501 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && 2502 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) 2503 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2504 } 2505 } 2506 2507 rctx_g35->routing_flags |= 2508 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2509 2510 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2511 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. 2512 * IO Subtype is not bitmap. 2513 */ 2514 if ((raid->level == 1) && (!is_read)) { 2515 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2516 praid_context->raid_context_g35.raid_flags = 2517 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2518 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2519 } 2520 } 2521 2522 /** 2523 * megasas_build_ldio_fusion - Prepares IOs to devices 2524 * @instance: Adapter soft state 2525 * @scp: SCSI command 2526 * @cmd: Command to be prepared 2527 * 2528 * Prepares the io_request and chain elements (sg_frame) for IO 2529 * The IO can be for PD (Fast Path) or LD 2530 */ 2531 void 2532 megasas_build_ldio_fusion(struct megasas_instance *instance, 2533 struct scsi_cmnd *scp, 2534 struct megasas_cmd_fusion *cmd) 2535 { 2536 bool fp_possible; 2537 u16 ld; 2538 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; 2539 u32 scsi_buff_len; 2540 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2541 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 2542 struct IO_REQUEST_INFO io_info; 2543 struct fusion_context *fusion; 2544 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2545 u8 *raidLUN; 2546 unsigned long spinlock_flags; 2547 union RAID_CONTEXT_UNION *praid_context; 2548 struct MR_LD_RAID *raid = NULL; 2549 struct MR_PRIV_DEVICE *mrdev_priv; 2550 2551 device_id = MEGASAS_DEV_INDEX(scp); 2552 2553 fusion = instance->ctrl_context; 2554 2555 io_request = cmd->io_request; 2556 io_request->RaidContext.raid_context.virtual_disk_tgt_id = 2557 cpu_to_le16(device_id); 2558 io_request->RaidContext.raid_context.status = 0; 2559 io_request->RaidContext.raid_context.ex_status = 0; 2560 2561 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 2562 2563 start_lba_lo = 0; 2564 start_lba_hi = 0; 2565 fp_possible = false; 2566 2567 /* 2568 * 6-byte READ(0x08) or WRITE(0x0A) cdb 2569 */ 2570 if (scp->cmd_len == 6) { 2571 datalength = (u32) scp->cmnd[4]; 2572 start_lba_lo = ((u32) scp->cmnd[1] << 16) | 2573 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 2574 2575 start_lba_lo &= 0x1FFFFF; 2576 } 2577 2578 /* 2579 * 10-byte READ(0x28) or WRITE(0x2A) cdb 2580 */ 2581 else if (scp->cmd_len == 10) { 2582 datalength = (u32) scp->cmnd[8] | 2583 ((u32) scp->cmnd[7] << 8); 2584 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2585 ((u32) scp->cmnd[3] << 16) | 2586 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2587 } 2588 2589 /* 2590 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 2591 */ 2592 else if (scp->cmd_len == 12) { 2593 datalength = ((u32) scp->cmnd[6] << 24) | 2594 ((u32) scp->cmnd[7] << 16) | 2595 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2596 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2597 ((u32) scp->cmnd[3] << 16) | 2598 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2599 } 2600 2601 /* 2602 * 16-byte READ(0x88) or WRITE(0x8A) cdb 2603 */ 2604 else if (scp->cmd_len == 16) { 2605 datalength = ((u32) scp->cmnd[10] << 24) | 2606 ((u32) scp->cmnd[11] << 16) | 2607 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 2608 start_lba_lo = ((u32) scp->cmnd[6] << 24) | 2609 ((u32) scp->cmnd[7] << 16) | 2610 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2611 2612 start_lba_hi = ((u32) scp->cmnd[2] << 24) | 2613 ((u32) scp->cmnd[3] << 16) | 2614 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2615 } 2616 2617 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); 2618 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; 2619 io_info.numBlocks = datalength; 2620 io_info.ldTgtId = device_id; 2621 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2622 scsi_buff_len = scsi_bufflen(scp); 2623 io_request->DataLength = cpu_to_le32(scsi_buff_len); 2624 2625 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 2626 io_info.isRead = 1; 2627 2628 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2629 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2630 2631 if (ld < instance->fw_supported_vd_count) 2632 raid = MR_LdRaidGet(ld, local_map_ptr); 2633 2634 if (!raid || (!fusion->fast_path_io)) { 2635 io_request->RaidContext.raid_context.reg_lock_flags = 0; 2636 fp_possible = false; 2637 } else { 2638 if (MR_BuildRaidContext(instance, &io_info, 2639 &io_request->RaidContext.raid_context, 2640 local_map_ptr, &raidLUN)) 2641 fp_possible = (io_info.fpOkForIo > 0) ? true : false; 2642 } 2643 2644 /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU 2645 id by default, not CPU group id, otherwise all MSI-X queues won't 2646 be utilized */ 2647 cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ? 2648 raw_smp_processor_id() % instance->msix_vectors : 0; 2649 2650 praid_context = &io_request->RaidContext; 2651 2652 if (instance->adapter_type == VENTURA_SERIES) { 2653 /* FP for Optimal raid level 1. 2654 * All large RAID-1 writes (> 32 KiB, both WT and WB modes) 2655 * are built by the driver as LD I/Os. 2656 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os 2657 * (there is never a reason to process these as buffered writes) 2658 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os 2659 * with the SLD bit asserted. 2660 */ 2661 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 2662 mrdev_priv = scp->device->hostdata; 2663 2664 if (atomic_inc_return(&instance->fw_outstanding) > 2665 (instance->host->can_queue)) { 2666 fp_possible = false; 2667 atomic_dec(&instance->fw_outstanding); 2668 } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || 2669 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) { 2670 fp_possible = false; 2671 atomic_dec(&instance->fw_outstanding); 2672 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2673 atomic_set(&mrdev_priv->r1_ldio_hint, 2674 instance->r1_ldio_hint_default); 2675 } 2676 } 2677 2678 if (!fp_possible || 2679 (io_info.isRead && io_info.ra_capable)) { 2680 spin_lock_irqsave(&instance->stream_lock, 2681 spinlock_flags); 2682 megasas_stream_detect(instance, cmd, &io_info); 2683 spin_unlock_irqrestore(&instance->stream_lock, 2684 spinlock_flags); 2685 /* In ventura if stream detected for a read and it is 2686 * read ahead capable make this IO as LDIO 2687 */ 2688 if (is_stream_detected(&io_request->RaidContext.raid_context_g35)) 2689 fp_possible = false; 2690 } 2691 2692 /* If raid is NULL, set CPU affinity to default CPU0 */ 2693 if (raid) 2694 megasas_set_raidflag_cpu_affinity(praid_context, 2695 raid, fp_possible, io_info.isRead, 2696 scsi_buff_len); 2697 else 2698 praid_context->raid_context_g35.routing_flags |= 2699 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2700 } 2701 2702 if (fp_possible) { 2703 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, 2704 local_map_ptr, start_lba_lo); 2705 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2706 cmd->request_desc->SCSIIO.RequestFlags = 2707 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO 2708 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2709 if (instance->adapter_type == INVADER_SERIES) { 2710 if (io_request->RaidContext.raid_context.reg_lock_flags == 2711 REGION_TYPE_UNUSED) 2712 cmd->request_desc->SCSIIO.RequestFlags = 2713 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2714 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2715 io_request->RaidContext.raid_context.type 2716 = MPI2_TYPE_CUDA; 2717 io_request->RaidContext.raid_context.nseg = 0x1; 2718 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2719 io_request->RaidContext.raid_context.reg_lock_flags |= 2720 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | 2721 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2722 } else if (instance->adapter_type == VENTURA_SERIES) { 2723 io_request->RaidContext.raid_context_g35.nseg_type |= 2724 (1 << RAID_CONTEXT_NSEG_SHIFT); 2725 io_request->RaidContext.raid_context_g35.nseg_type |= 2726 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2727 io_request->RaidContext.raid_context_g35.routing_flags |= 2728 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2729 io_request->IoFlags |= 2730 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2731 } 2732 if (fusion->load_balance_info && 2733 (fusion->load_balance_info[device_id].loadBalanceFlag) && 2734 (io_info.isRead)) { 2735 io_info.devHandle = 2736 get_updated_dev_handle(instance, 2737 &fusion->load_balance_info[device_id], 2738 &io_info, local_map_ptr); 2739 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; 2740 cmd->pd_r1_lb = io_info.pd_after_lb; 2741 if (instance->adapter_type == VENTURA_SERIES) 2742 io_request->RaidContext.raid_context_g35.span_arm 2743 = io_info.span_arm; 2744 else 2745 io_request->RaidContext.raid_context.span_arm 2746 = io_info.span_arm; 2747 2748 } else 2749 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 2750 2751 if (instance->adapter_type == VENTURA_SERIES) 2752 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; 2753 else 2754 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2755 2756 if ((raidLUN[0] == 1) && 2757 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { 2758 instance->dev_handle = !(instance->dev_handle); 2759 io_info.devHandle = 2760 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; 2761 } 2762 2763 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; 2764 io_request->DevHandle = io_info.devHandle; 2765 cmd->pd_interface = io_info.pd_interface; 2766 /* populate the LUN field */ 2767 memcpy(io_request->LUN, raidLUN, 8); 2768 } else { 2769 io_request->RaidContext.raid_context.timeout_value = 2770 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); 2771 cmd->request_desc->SCSIIO.RequestFlags = 2772 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 2773 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2774 if (instance->adapter_type == INVADER_SERIES) { 2775 if (io_info.do_fp_rlbypass || 2776 (io_request->RaidContext.raid_context.reg_lock_flags 2777 == REGION_TYPE_UNUSED)) 2778 cmd->request_desc->SCSIIO.RequestFlags = 2779 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2780 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2781 io_request->RaidContext.raid_context.type 2782 = MPI2_TYPE_CUDA; 2783 io_request->RaidContext.raid_context.reg_lock_flags |= 2784 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | 2785 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2786 io_request->RaidContext.raid_context.nseg = 0x1; 2787 } else if (instance->adapter_type == VENTURA_SERIES) { 2788 io_request->RaidContext.raid_context_g35.routing_flags |= 2789 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2790 io_request->RaidContext.raid_context_g35.nseg_type |= 2791 (1 << RAID_CONTEXT_NSEG_SHIFT); 2792 io_request->RaidContext.raid_context_g35.nseg_type |= 2793 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2794 } 2795 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2796 io_request->DevHandle = cpu_to_le16(device_id); 2797 2798 } /* Not FP */ 2799 } 2800 2801 /** 2802 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk 2803 * @instance: Adapter soft state 2804 * @scp: SCSI command 2805 * @cmd: Command to be prepared 2806 * 2807 * Prepares the io_request frame for non-rw io cmds for vd. 2808 */ 2809 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, 2810 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) 2811 { 2812 u32 device_id; 2813 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2814 u16 ld; 2815 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2816 struct fusion_context *fusion = instance->ctrl_context; 2817 u8 span, physArm; 2818 __le16 devHandle; 2819 u32 arRef, pd; 2820 struct MR_LD_RAID *raid; 2821 struct RAID_CONTEXT *pRAID_Context; 2822 u8 fp_possible = 1; 2823 2824 io_request = cmd->io_request; 2825 device_id = MEGASAS_DEV_INDEX(scmd); 2826 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2827 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2828 /* get RAID_Context pointer */ 2829 pRAID_Context = &io_request->RaidContext.raid_context; 2830 /* Check with FW team */ 2831 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2832 pRAID_Context->reg_lock_row_lba = 0; 2833 pRAID_Context->reg_lock_length = 0; 2834 2835 if (fusion->fast_path_io && ( 2836 device_id < instance->fw_supported_vd_count)) { 2837 2838 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2839 if (ld >= instance->fw_supported_vd_count) 2840 fp_possible = 0; 2841 else { 2842 raid = MR_LdRaidGet(ld, local_map_ptr); 2843 if (!(raid->capability.fpNonRWCapable)) 2844 fp_possible = 0; 2845 } 2846 } else 2847 fp_possible = 0; 2848 2849 if (!fp_possible) { 2850 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2851 io_request->DevHandle = cpu_to_le16(device_id); 2852 io_request->LUN[1] = scmd->device->lun; 2853 pRAID_Context->timeout_value = 2854 cpu_to_le16 (scmd->request->timeout / HZ); 2855 cmd->request_desc->SCSIIO.RequestFlags = 2856 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2857 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2858 } else { 2859 2860 /* set RAID context values */ 2861 pRAID_Context->config_seq_num = raid->seqNum; 2862 if (instance->adapter_type != VENTURA_SERIES) 2863 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; 2864 pRAID_Context->timeout_value = 2865 cpu_to_le16(raid->fpIoTimeoutForLd); 2866 2867 /* get the DevHandle for the PD (since this is 2868 fpNonRWCapable, this is a single disk RAID0) */ 2869 span = physArm = 0; 2870 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); 2871 pd = MR_ArPdGet(arRef, physArm, local_map_ptr); 2872 devHandle = MR_PdDevHandleGet(pd, local_map_ptr); 2873 2874 /* build request descriptor */ 2875 cmd->request_desc->SCSIIO.RequestFlags = 2876 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 2877 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2878 cmd->request_desc->SCSIIO.DevHandle = devHandle; 2879 2880 /* populate the LUN field */ 2881 memcpy(io_request->LUN, raid->LUN, 8); 2882 2883 /* build the raidScsiIO structure */ 2884 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2885 io_request->DevHandle = devHandle; 2886 } 2887 } 2888 2889 /** 2890 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd 2891 * @instance: Adapter soft state 2892 * @scp: SCSI command 2893 * @cmd: Command to be prepared 2894 * @fp_possible: parameter to detect fast path or firmware path io. 2895 * 2896 * Prepares the io_request frame for rw/non-rw io cmds for syspds 2897 */ 2898 static void 2899 megasas_build_syspd_fusion(struct megasas_instance *instance, 2900 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, 2901 bool fp_possible) 2902 { 2903 u32 device_id; 2904 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2905 u16 pd_index = 0; 2906 u16 os_timeout_value; 2907 u16 timeout_limit; 2908 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2909 struct RAID_CONTEXT *pRAID_Context; 2910 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 2911 struct MR_PRIV_DEVICE *mr_device_priv_data; 2912 struct fusion_context *fusion = instance->ctrl_context; 2913 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; 2914 2915 device_id = MEGASAS_DEV_INDEX(scmd); 2916 pd_index = MEGASAS_PD_INDEX(scmd); 2917 os_timeout_value = scmd->request->timeout / HZ; 2918 mr_device_priv_data = scmd->device->hostdata; 2919 cmd->pd_interface = mr_device_priv_data->interface_type; 2920 2921 io_request = cmd->io_request; 2922 /* get RAID_Context pointer */ 2923 pRAID_Context = &io_request->RaidContext.raid_context; 2924 pRAID_Context->reg_lock_flags = 0; 2925 pRAID_Context->reg_lock_row_lba = 0; 2926 pRAID_Context->reg_lock_length = 0; 2927 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2928 io_request->LUN[1] = scmd->device->lun; 2929 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD 2930 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; 2931 2932 /* If FW supports PD sequence number */ 2933 if (instance->use_seqnum_jbod_fp && 2934 instance->pd_list[pd_index].driveType == TYPE_DISK) { 2935 /* TgtId must be incremented by 255 as jbod seq number is index 2936 * below raid map 2937 */ 2938 /* More than 256 PD/JBOD support for Ventura */ 2939 if (instance->support_morethan256jbod) 2940 pRAID_Context->virtual_disk_tgt_id = 2941 pd_sync->seq[pd_index].pd_target_id; 2942 else 2943 pRAID_Context->virtual_disk_tgt_id = 2944 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1)); 2945 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum; 2946 io_request->DevHandle = pd_sync->seq[pd_index].devHandle; 2947 if (instance->adapter_type == VENTURA_SERIES) { 2948 io_request->RaidContext.raid_context_g35.routing_flags |= 2949 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2950 io_request->RaidContext.raid_context_g35.nseg_type |= 2951 (1 << RAID_CONTEXT_NSEG_SHIFT); 2952 io_request->RaidContext.raid_context_g35.nseg_type |= 2953 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2954 } else { 2955 pRAID_Context->type = MPI2_TYPE_CUDA; 2956 pRAID_Context->nseg = 0x1; 2957 pRAID_Context->reg_lock_flags |= 2958 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA); 2959 } 2960 } else if (fusion->fast_path_io) { 2961 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2962 pRAID_Context->config_seq_num = 0; 2963 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2964 io_request->DevHandle = 2965 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; 2966 } else { 2967 /* Want to send all IO via FW path */ 2968 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2969 pRAID_Context->config_seq_num = 0; 2970 io_request->DevHandle = cpu_to_le16(0xFFFF); 2971 } 2972 2973 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; 2974 cmd->request_desc->SCSIIO.MSIxIndex = 2975 instance->msix_vectors ? 2976 (raw_smp_processor_id() % instance->msix_vectors) : 0; 2977 2978 2979 if (!fp_possible) { 2980 /* system pd firmware path */ 2981 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2982 cmd->request_desc->SCSIIO.RequestFlags = 2983 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2984 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2985 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); 2986 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2987 } else { 2988 /* system pd Fast Path */ 2989 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2990 timeout_limit = (scmd->device->type == TYPE_DISK) ? 2991 255 : 0xFFFF; 2992 pRAID_Context->timeout_value = 2993 cpu_to_le16((os_timeout_value > timeout_limit) ? 2994 timeout_limit : os_timeout_value); 2995 if (instance->adapter_type >= INVADER_SERIES) 2996 io_request->IoFlags |= 2997 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2998 2999 cmd->request_desc->SCSIIO.RequestFlags = 3000 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3001 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3002 } 3003 } 3004 3005 /** 3006 * megasas_build_io_fusion - Prepares IOs to devices 3007 * @instance: Adapter soft state 3008 * @scp: SCSI command 3009 * @cmd: Command to be prepared 3010 * 3011 * Invokes helper functions to prepare request frames 3012 * and sets flags appropriate for IO/Non-IO cmd 3013 */ 3014 int 3015 megasas_build_io_fusion(struct megasas_instance *instance, 3016 struct scsi_cmnd *scp, 3017 struct megasas_cmd_fusion *cmd) 3018 { 3019 int sge_count; 3020 u8 cmd_type; 3021 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; 3022 struct MR_PRIV_DEVICE *mr_device_priv_data; 3023 mr_device_priv_data = scp->device->hostdata; 3024 3025 /* Zero out some fields so they don't get reused */ 3026 memset(io_request->LUN, 0x0, 8); 3027 io_request->CDB.EEDP32.PrimaryReferenceTag = 0; 3028 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; 3029 io_request->EEDPFlags = 0; 3030 io_request->Control = 0; 3031 io_request->EEDPBlockSize = 0; 3032 io_request->ChainOffset = 0; 3033 io_request->RaidContext.raid_context.raid_flags = 0; 3034 io_request->RaidContext.raid_context.type = 0; 3035 io_request->RaidContext.raid_context.nseg = 0; 3036 3037 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); 3038 /* 3039 * Just the CDB length,rest of the Flags are zero 3040 * This will be modified for FP in build_ldio_fusion 3041 */ 3042 io_request->IoFlags = cpu_to_le16(scp->cmd_len); 3043 3044 switch (cmd_type = megasas_cmd_type(scp)) { 3045 case READ_WRITE_LDIO: 3046 megasas_build_ldio_fusion(instance, scp, cmd); 3047 break; 3048 case NON_READ_WRITE_LDIO: 3049 megasas_build_ld_nonrw_fusion(instance, scp, cmd); 3050 break; 3051 case READ_WRITE_SYSPDIO: 3052 megasas_build_syspd_fusion(instance, scp, cmd, true); 3053 break; 3054 case NON_READ_WRITE_SYSPDIO: 3055 if (instance->secure_jbod_support || 3056 mr_device_priv_data->is_tm_capable) 3057 megasas_build_syspd_fusion(instance, scp, cmd, false); 3058 else 3059 megasas_build_syspd_fusion(instance, scp, cmd, true); 3060 break; 3061 default: 3062 break; 3063 } 3064 3065 /* 3066 * Construct SGL 3067 */ 3068 3069 sge_count = megasas_make_sgl(instance, scp, cmd); 3070 3071 if (sge_count > instance->max_num_sge || (sge_count < 0)) { 3072 dev_err(&instance->pdev->dev, 3073 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", 3074 __func__, __LINE__, sge_count, instance->max_num_sge); 3075 return 1; 3076 } 3077 3078 if (instance->adapter_type == VENTURA_SERIES) { 3079 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); 3080 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); 3081 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); 3082 } else { 3083 /* numSGE store lower 8 bit of sge_count. 3084 * numSGEExt store higher 8 bit of sge_count 3085 */ 3086 io_request->RaidContext.raid_context.num_sge = sge_count; 3087 io_request->RaidContext.raid_context.num_sge_ext = 3088 (u8)(sge_count >> 8); 3089 } 3090 3091 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); 3092 3093 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 3094 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); 3095 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 3096 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); 3097 3098 io_request->SGLOffset0 = 3099 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; 3100 3101 io_request->SenseBufferLowAddress = 3102 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 3103 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 3104 3105 cmd->scmd = scp; 3106 scp->SCp.ptr = (char *)cmd; 3107 3108 return 0; 3109 } 3110 3111 static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3112 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) 3113 { 3114 u8 *p; 3115 struct fusion_context *fusion; 3116 3117 fusion = instance->ctrl_context; 3118 p = fusion->req_frames_desc + 3119 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; 3120 3121 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; 3122 } 3123 3124 3125 /* megasas_prepate_secondRaid1_IO 3126 * It prepares the raid 1 second IO 3127 */ 3128 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, 3129 struct megasas_cmd_fusion *cmd, 3130 struct megasas_cmd_fusion *r1_cmd) 3131 { 3132 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; 3133 struct fusion_context *fusion; 3134 fusion = instance->ctrl_context; 3135 req_desc = cmd->request_desc; 3136 /* copy the io request frame as well as 8 SGEs data for r1 command*/ 3137 memcpy(r1_cmd->io_request, cmd->io_request, 3138 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); 3139 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL, 3140 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); 3141 /*sense buffer is different for r1 command*/ 3142 r1_cmd->io_request->SenseBufferLowAddress = 3143 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr)); 3144 r1_cmd->scmd = cmd->scmd; 3145 req_desc2 = megasas_get_request_descriptor(instance, 3146 (r1_cmd->index - 1)); 3147 req_desc2->Words = 0; 3148 r1_cmd->request_desc = req_desc2; 3149 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); 3150 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; 3151 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; 3152 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; 3153 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; 3154 cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3155 cpu_to_le16(r1_cmd->index); 3156 r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3157 cpu_to_le16(cmd->index); 3158 /*MSIxIndex of both commands request descriptors should be same*/ 3159 r1_cmd->request_desc->SCSIIO.MSIxIndex = 3160 cmd->request_desc->SCSIIO.MSIxIndex; 3161 /*span arm is different for r1 cmd*/ 3162 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = 3163 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; 3164 } 3165 3166 /** 3167 * megasas_build_and_issue_cmd_fusion -Main routine for building and 3168 * issuing non IOCTL cmd 3169 * @instance: Adapter soft state 3170 * @scmd: pointer to scsi cmd from OS 3171 */ 3172 static u32 3173 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, 3174 struct scsi_cmnd *scmd) 3175 { 3176 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL; 3177 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3178 u32 index; 3179 struct fusion_context *fusion; 3180 3181 fusion = instance->ctrl_context; 3182 3183 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && 3184 instance->ldio_threshold && 3185 (atomic_inc_return(&instance->ldio_outstanding) > 3186 instance->ldio_threshold)) { 3187 atomic_dec(&instance->ldio_outstanding); 3188 return SCSI_MLQUEUE_DEVICE_BUSY; 3189 } 3190 3191 if (atomic_inc_return(&instance->fw_outstanding) > 3192 instance->host->can_queue) { 3193 atomic_dec(&instance->fw_outstanding); 3194 return SCSI_MLQUEUE_HOST_BUSY; 3195 } 3196 3197 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag); 3198 3199 if (!cmd) { 3200 atomic_dec(&instance->fw_outstanding); 3201 return SCSI_MLQUEUE_HOST_BUSY; 3202 } 3203 3204 index = cmd->index; 3205 3206 req_desc = megasas_get_request_descriptor(instance, index-1); 3207 3208 req_desc->Words = 0; 3209 cmd->request_desc = req_desc; 3210 3211 if (megasas_build_io_fusion(instance, scmd, cmd)) { 3212 megasas_return_cmd_fusion(instance, cmd); 3213 dev_err(&instance->pdev->dev, "Error building command\n"); 3214 cmd->request_desc = NULL; 3215 atomic_dec(&instance->fw_outstanding); 3216 return SCSI_MLQUEUE_HOST_BUSY; 3217 } 3218 3219 req_desc = cmd->request_desc; 3220 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3221 3222 if (cmd->io_request->ChainOffset != 0 && 3223 cmd->io_request->ChainOffset != 0xF) 3224 dev_err(&instance->pdev->dev, "The chain offset value is not " 3225 "correct : %x\n", cmd->io_request->ChainOffset); 3226 /* 3227 * if it is raid 1/10 fp write capable. 3228 * try to get second command from pool and construct it. 3229 * From FW, it has confirmed that lba values of two PDs 3230 * corresponds to single R1/10 LD are always same 3231 * 3232 */ 3233 /* driver side count always should be less than max_fw_cmds 3234 * to get new command 3235 */ 3236 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 3237 r1_cmd = megasas_get_cmd_fusion(instance, 3238 (scmd->request->tag + instance->max_fw_cmds)); 3239 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); 3240 } 3241 3242 3243 /* 3244 * Issue the command to the FW 3245 */ 3246 3247 megasas_fire_cmd_fusion(instance, req_desc); 3248 3249 if (r1_cmd) 3250 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); 3251 3252 3253 return 0; 3254 } 3255 3256 /** 3257 * megasas_complete_r1_command - 3258 * completes R1 FP write commands which has valid peer smid 3259 * @instance: Adapter soft state 3260 * @cmd_fusion: MPT command frame 3261 * 3262 */ 3263 static inline void 3264 megasas_complete_r1_command(struct megasas_instance *instance, 3265 struct megasas_cmd_fusion *cmd) 3266 { 3267 u8 *sense, status, ex_status; 3268 u32 data_length; 3269 u16 peer_smid; 3270 struct fusion_context *fusion; 3271 struct megasas_cmd_fusion *r1_cmd = NULL; 3272 struct scsi_cmnd *scmd_local = NULL; 3273 struct RAID_CONTEXT_G35 *rctx_g35; 3274 3275 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; 3276 fusion = instance->ctrl_context; 3277 peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid); 3278 3279 r1_cmd = fusion->cmd_list[peer_smid - 1]; 3280 scmd_local = cmd->scmd; 3281 status = rctx_g35->status; 3282 ex_status = rctx_g35->ex_status; 3283 data_length = cmd->io_request->DataLength; 3284 sense = cmd->sense; 3285 3286 cmd->cmd_completed = true; 3287 3288 /* Check if peer command is completed or not*/ 3289 if (r1_cmd->cmd_completed) { 3290 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; 3291 if (rctx_g35->status != MFI_STAT_OK) { 3292 status = rctx_g35->status; 3293 ex_status = rctx_g35->ex_status; 3294 data_length = r1_cmd->io_request->DataLength; 3295 sense = r1_cmd->sense; 3296 } 3297 3298 megasas_return_cmd_fusion(instance, r1_cmd); 3299 map_cmd_status(fusion, scmd_local, status, ex_status, 3300 le32_to_cpu(data_length), sense); 3301 if (instance->ldio_threshold && 3302 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 3303 atomic_dec(&instance->ldio_outstanding); 3304 scmd_local->SCp.ptr = NULL; 3305 megasas_return_cmd_fusion(instance, cmd); 3306 scsi_dma_unmap(scmd_local); 3307 scmd_local->scsi_done(scmd_local); 3308 } 3309 } 3310 3311 /** 3312 * complete_cmd_fusion - Completes command 3313 * @instance: Adapter soft state 3314 * Completes all commands that is in reply descriptor queue 3315 */ 3316 int 3317 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) 3318 { 3319 union MPI2_REPLY_DESCRIPTORS_UNION *desc; 3320 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; 3321 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 3322 struct fusion_context *fusion; 3323 struct megasas_cmd *cmd_mfi; 3324 struct megasas_cmd_fusion *cmd_fusion; 3325 u16 smid, num_completed; 3326 u8 reply_descript_type, *sense, status, extStatus; 3327 u32 device_id, data_length; 3328 union desc_value d_val; 3329 struct LD_LOAD_BALANCE_INFO *lbinfo; 3330 int threshold_reply_count = 0; 3331 struct scsi_cmnd *scmd_local = NULL; 3332 struct MR_TASK_MANAGE_REQUEST *mr_tm_req; 3333 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; 3334 3335 fusion = instance->ctrl_context; 3336 3337 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3338 return IRQ_HANDLED; 3339 3340 desc = fusion->reply_frames_desc[MSIxIndex] + 3341 fusion->last_reply_idx[MSIxIndex]; 3342 3343 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3344 3345 d_val.word = desc->Words; 3346 3347 reply_descript_type = reply_desc->ReplyFlags & 3348 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3349 3350 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3351 return IRQ_NONE; 3352 3353 num_completed = 0; 3354 3355 while (d_val.u.low != cpu_to_le32(UINT_MAX) && 3356 d_val.u.high != cpu_to_le32(UINT_MAX)) { 3357 3358 smid = le16_to_cpu(reply_desc->SMID); 3359 cmd_fusion = fusion->cmd_list[smid - 1]; 3360 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 3361 cmd_fusion->io_request; 3362 3363 scmd_local = cmd_fusion->scmd; 3364 status = scsi_io_req->RaidContext.raid_context.status; 3365 extStatus = scsi_io_req->RaidContext.raid_context.ex_status; 3366 sense = cmd_fusion->sense; 3367 data_length = scsi_io_req->DataLength; 3368 3369 switch (scsi_io_req->Function) { 3370 case MPI2_FUNCTION_SCSI_TASK_MGMT: 3371 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) 3372 cmd_fusion->io_request; 3373 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) 3374 &mr_tm_req->TmRequest; 3375 dev_dbg(&instance->pdev->dev, "TM completion:" 3376 "type: 0x%x TaskMID: 0x%x\n", 3377 mpi_tm_req->TaskType, mpi_tm_req->TaskMID); 3378 complete(&cmd_fusion->done); 3379 break; 3380 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ 3381 /* Update load balancing info */ 3382 if (fusion->load_balance_info && 3383 (cmd_fusion->scmd->SCp.Status & 3384 MEGASAS_LOAD_BALANCE_FLAG)) { 3385 device_id = MEGASAS_DEV_INDEX(scmd_local); 3386 lbinfo = &fusion->load_balance_info[device_id]; 3387 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); 3388 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 3389 } 3390 //Fall thru and complete IO 3391 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ 3392 atomic_dec(&instance->fw_outstanding); 3393 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { 3394 map_cmd_status(fusion, scmd_local, status, 3395 extStatus, le32_to_cpu(data_length), 3396 sense); 3397 if (instance->ldio_threshold && 3398 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) 3399 atomic_dec(&instance->ldio_outstanding); 3400 scmd_local->SCp.ptr = NULL; 3401 megasas_return_cmd_fusion(instance, cmd_fusion); 3402 scsi_dma_unmap(scmd_local); 3403 scmd_local->scsi_done(scmd_local); 3404 } else /* Optimal VD - R1 FP command completion. */ 3405 megasas_complete_r1_command(instance, cmd_fusion); 3406 break; 3407 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ 3408 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3409 /* Poll mode. Dummy free. 3410 * In case of Interrupt mode, caller has reverse check. 3411 */ 3412 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 3413 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 3414 megasas_return_cmd(instance, cmd_mfi); 3415 } else 3416 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3417 break; 3418 } 3419 3420 fusion->last_reply_idx[MSIxIndex]++; 3421 if (fusion->last_reply_idx[MSIxIndex] >= 3422 fusion->reply_q_depth) 3423 fusion->last_reply_idx[MSIxIndex] = 0; 3424 3425 desc->Words = cpu_to_le64(ULLONG_MAX); 3426 num_completed++; 3427 threshold_reply_count++; 3428 3429 /* Get the next reply descriptor */ 3430 if (!fusion->last_reply_idx[MSIxIndex]) 3431 desc = fusion->reply_frames_desc[MSIxIndex]; 3432 else 3433 desc++; 3434 3435 reply_desc = 3436 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3437 3438 d_val.word = desc->Words; 3439 3440 reply_descript_type = reply_desc->ReplyFlags & 3441 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3442 3443 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3444 break; 3445 /* 3446 * Write to reply post host index register after completing threshold 3447 * number of reply counts and still there are more replies in reply queue 3448 * pending to be completed 3449 */ 3450 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) { 3451 if (instance->msix_combined) 3452 writel(((MSIxIndex & 0x7) << 24) | 3453 fusion->last_reply_idx[MSIxIndex], 3454 instance->reply_post_host_index_addr[MSIxIndex/8]); 3455 else 3456 writel((MSIxIndex << 24) | 3457 fusion->last_reply_idx[MSIxIndex], 3458 instance->reply_post_host_index_addr[0]); 3459 threshold_reply_count = 0; 3460 } 3461 } 3462 3463 if (!num_completed) 3464 return IRQ_NONE; 3465 3466 wmb(); 3467 if (instance->msix_combined) 3468 writel(((MSIxIndex & 0x7) << 24) | 3469 fusion->last_reply_idx[MSIxIndex], 3470 instance->reply_post_host_index_addr[MSIxIndex/8]); 3471 else 3472 writel((MSIxIndex << 24) | 3473 fusion->last_reply_idx[MSIxIndex], 3474 instance->reply_post_host_index_addr[0]); 3475 megasas_check_and_restore_queue_depth(instance); 3476 return IRQ_HANDLED; 3477 } 3478 3479 /** 3480 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter 3481 * @instance: Adapter soft state 3482 */ 3483 void megasas_sync_irqs(unsigned long instance_addr) 3484 { 3485 u32 count, i; 3486 struct megasas_instance *instance = 3487 (struct megasas_instance *)instance_addr; 3488 3489 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3490 3491 for (i = 0; i < count; i++) 3492 synchronize_irq(pci_irq_vector(instance->pdev, i)); 3493 } 3494 3495 /** 3496 * megasas_complete_cmd_dpc_fusion - Completes command 3497 * @instance: Adapter soft state 3498 * 3499 * Tasklet to complete cmds 3500 */ 3501 void 3502 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) 3503 { 3504 struct megasas_instance *instance = 3505 (struct megasas_instance *)instance_addr; 3506 unsigned long flags; 3507 u32 count, MSIxIndex; 3508 3509 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3510 3511 /* If we have already declared adapter dead, donot complete cmds */ 3512 spin_lock_irqsave(&instance->hba_lock, flags); 3513 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 3514 spin_unlock_irqrestore(&instance->hba_lock, flags); 3515 return; 3516 } 3517 spin_unlock_irqrestore(&instance->hba_lock, flags); 3518 3519 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) 3520 complete_cmd_fusion(instance, MSIxIndex); 3521 } 3522 3523 /** 3524 * megasas_isr_fusion - isr entry point 3525 */ 3526 irqreturn_t megasas_isr_fusion(int irq, void *devp) 3527 { 3528 struct megasas_irq_context *irq_context = devp; 3529 struct megasas_instance *instance = irq_context->instance; 3530 u32 mfiStatus, fw_state, dma_state; 3531 3532 if (instance->mask_interrupts) 3533 return IRQ_NONE; 3534 3535 if (!instance->msix_vectors) { 3536 mfiStatus = instance->instancet->clear_intr(instance->reg_set); 3537 if (!mfiStatus) 3538 return IRQ_NONE; 3539 } 3540 3541 /* If we are resetting, bail */ 3542 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { 3543 instance->instancet->clear_intr(instance->reg_set); 3544 return IRQ_HANDLED; 3545 } 3546 3547 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) { 3548 instance->instancet->clear_intr(instance->reg_set); 3549 /* If we didn't complete any commands, check for FW fault */ 3550 fw_state = instance->instancet->read_fw_status_reg( 3551 instance->reg_set) & MFI_STATE_MASK; 3552 dma_state = instance->instancet->read_fw_status_reg 3553 (instance->reg_set) & MFI_STATE_DMADONE; 3554 if (instance->crash_dump_drv_support && 3555 instance->crash_dump_app_support) { 3556 /* Start collecting crash, if DMA bit is done */ 3557 if ((fw_state == MFI_STATE_FAULT) && dma_state) 3558 schedule_work(&instance->crash_init); 3559 else if (fw_state == MFI_STATE_FAULT) { 3560 if (instance->unload == 0) 3561 schedule_work(&instance->work_init); 3562 } 3563 } else if (fw_state == MFI_STATE_FAULT) { 3564 dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt" 3565 "for scsi%d\n", instance->host->host_no); 3566 if (instance->unload == 0) 3567 schedule_work(&instance->work_init); 3568 } 3569 } 3570 3571 return IRQ_HANDLED; 3572 } 3573 3574 /** 3575 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru 3576 * @instance: Adapter soft state 3577 * mfi_cmd: megasas_cmd pointer 3578 * 3579 */ 3580 void 3581 build_mpt_mfi_pass_thru(struct megasas_instance *instance, 3582 struct megasas_cmd *mfi_cmd) 3583 { 3584 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; 3585 struct MPI2_RAID_SCSI_IO_REQUEST *io_req; 3586 struct megasas_cmd_fusion *cmd; 3587 struct fusion_context *fusion; 3588 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; 3589 3590 fusion = instance->ctrl_context; 3591 3592 cmd = megasas_get_cmd_fusion(instance, 3593 instance->max_scsi_cmds + mfi_cmd->index); 3594 3595 /* Save the smid. To be used for returning the cmd */ 3596 mfi_cmd->context.smid = cmd->index; 3597 3598 /* 3599 * For cmds where the flag is set, store the flag and check 3600 * on completion. For cmds with this flag, don't call 3601 * megasas_complete_cmd 3602 */ 3603 3604 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) 3605 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; 3606 3607 io_req = cmd->io_request; 3608 3609 if (instance->adapter_type >= INVADER_SERIES) { 3610 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = 3611 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; 3612 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 3613 sgl_ptr_end->Flags = 0; 3614 } 3615 3616 mpi25_ieee_chain = 3617 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; 3618 3619 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; 3620 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, 3621 SGL) / 4; 3622 io_req->ChainOffset = fusion->chain_offset_mfi_pthru; 3623 3624 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); 3625 3626 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 3627 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; 3628 3629 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size); 3630 } 3631 3632 /** 3633 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd 3634 * @instance: Adapter soft state 3635 * @cmd: mfi cmd to build 3636 * 3637 */ 3638 union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3639 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 3640 { 3641 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; 3642 u16 index; 3643 3644 build_mpt_mfi_pass_thru(instance, cmd); 3645 index = cmd->context.smid; 3646 3647 req_desc = megasas_get_request_descriptor(instance, index - 1); 3648 3649 req_desc->Words = 0; 3650 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3651 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3652 3653 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3654 3655 return req_desc; 3656 } 3657 3658 /** 3659 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd 3660 * @instance: Adapter soft state 3661 * @cmd: mfi cmd pointer 3662 * 3663 */ 3664 void 3665 megasas_issue_dcmd_fusion(struct megasas_instance *instance, 3666 struct megasas_cmd *cmd) 3667 { 3668 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3669 3670 req_desc = build_mpt_cmd(instance, cmd); 3671 3672 megasas_fire_cmd_fusion(instance, req_desc); 3673 return; 3674 } 3675 3676 /** 3677 * megasas_release_fusion - Reverses the FW initialization 3678 * @instance: Adapter soft state 3679 */ 3680 void 3681 megasas_release_fusion(struct megasas_instance *instance) 3682 { 3683 megasas_free_ioc_init_cmd(instance); 3684 megasas_free_cmds(instance); 3685 megasas_free_cmds_fusion(instance); 3686 3687 iounmap(instance->reg_set); 3688 3689 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 3690 } 3691 3692 /** 3693 * megasas_read_fw_status_reg_fusion - returns the current FW status value 3694 * @regs: MFI register set 3695 */ 3696 static u32 3697 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs) 3698 { 3699 return readl(&(regs)->outbound_scratch_pad); 3700 } 3701 3702 /** 3703 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3704 * @instance: Controller's soft instance 3705 * return: Number of allocated host crash buffers 3706 */ 3707 static void 3708 megasas_alloc_host_crash_buffer(struct megasas_instance *instance) 3709 { 3710 unsigned int i; 3711 3712 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { 3713 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); 3714 if (!instance->crash_buf[i]) { 3715 dev_info(&instance->pdev->dev, "Firmware crash dump " 3716 "memory allocation failed at index %d\n", i); 3717 break; 3718 } 3719 } 3720 instance->drv_buf_alloc = i; 3721 } 3722 3723 /** 3724 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3725 * @instance: Controller's soft instance 3726 */ 3727 void 3728 megasas_free_host_crash_buffer(struct megasas_instance *instance) 3729 { 3730 unsigned int i; 3731 for (i = 0; i < instance->drv_buf_alloc; i++) { 3732 if (instance->crash_buf[i]) 3733 vfree(instance->crash_buf[i]); 3734 } 3735 instance->drv_buf_index = 0; 3736 instance->drv_buf_alloc = 0; 3737 instance->fw_crash_state = UNAVAILABLE; 3738 instance->fw_crash_buffer_size = 0; 3739 } 3740 3741 /** 3742 * megasas_adp_reset_fusion - For controller reset 3743 * @regs: MFI register set 3744 */ 3745 static int 3746 megasas_adp_reset_fusion(struct megasas_instance *instance, 3747 struct megasas_register_set __iomem *regs) 3748 { 3749 u32 host_diag, abs_state, retry; 3750 3751 /* Now try to reset the chip */ 3752 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3753 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3754 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3755 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3756 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3757 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3758 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3759 3760 /* Check that the diag write enable (DRWE) bit is on */ 3761 host_diag = readl(&instance->reg_set->fusion_host_diag); 3762 retry = 0; 3763 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { 3764 msleep(100); 3765 host_diag = readl(&instance->reg_set->fusion_host_diag); 3766 if (retry++ == 100) { 3767 dev_warn(&instance->pdev->dev, 3768 "Host diag unlock failed from %s %d\n", 3769 __func__, __LINE__); 3770 break; 3771 } 3772 } 3773 if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) 3774 return -1; 3775 3776 /* Send chip reset command */ 3777 writel(host_diag | HOST_DIAG_RESET_ADAPTER, 3778 &instance->reg_set->fusion_host_diag); 3779 msleep(3000); 3780 3781 /* Make sure reset adapter bit is cleared */ 3782 host_diag = readl(&instance->reg_set->fusion_host_diag); 3783 retry = 0; 3784 while (host_diag & HOST_DIAG_RESET_ADAPTER) { 3785 msleep(100); 3786 host_diag = readl(&instance->reg_set->fusion_host_diag); 3787 if (retry++ == 1000) { 3788 dev_warn(&instance->pdev->dev, 3789 "Diag reset adapter never cleared %s %d\n", 3790 __func__, __LINE__); 3791 break; 3792 } 3793 } 3794 if (host_diag & HOST_DIAG_RESET_ADAPTER) 3795 return -1; 3796 3797 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set) 3798 & MFI_STATE_MASK; 3799 retry = 0; 3800 3801 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { 3802 msleep(100); 3803 abs_state = instance->instancet-> 3804 read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 3805 } 3806 if (abs_state <= MFI_STATE_FW_INIT) { 3807 dev_warn(&instance->pdev->dev, 3808 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", 3809 abs_state, __func__, __LINE__); 3810 return -1; 3811 } 3812 3813 return 0; 3814 } 3815 3816 /** 3817 * megasas_check_reset_fusion - For controller reset check 3818 * @regs: MFI register set 3819 */ 3820 static int 3821 megasas_check_reset_fusion(struct megasas_instance *instance, 3822 struct megasas_register_set __iomem *regs) 3823 { 3824 return 0; 3825 } 3826 3827 /* This function waits for outstanding commands on fusion to complete */ 3828 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, 3829 int reason, int *convert) 3830 { 3831 int i, outstanding, retval = 0, hb_seconds_missed = 0; 3832 u32 fw_state; 3833 3834 for (i = 0; i < resetwaittime; i++) { 3835 /* Check if firmware is in fault state */ 3836 fw_state = instance->instancet->read_fw_status_reg( 3837 instance->reg_set) & MFI_STATE_MASK; 3838 if (fw_state == MFI_STATE_FAULT) { 3839 dev_warn(&instance->pdev->dev, "Found FW in FAULT state," 3840 " will reset adapter scsi%d.\n", 3841 instance->host->host_no); 3842 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3843 if (instance->requestorId && reason) { 3844 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" 3845 " state while polling during" 3846 " I/O timeout handling for %d\n", 3847 instance->host->host_no); 3848 *convert = 1; 3849 } 3850 3851 retval = 1; 3852 goto out; 3853 } 3854 3855 if (reason == MFI_IO_TIMEOUT_OCR) { 3856 dev_info(&instance->pdev->dev, 3857 "MFI IO is timed out, initiating OCR\n"); 3858 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3859 retval = 1; 3860 goto out; 3861 } 3862 3863 /* If SR-IOV VF mode & heartbeat timeout, don't wait */ 3864 if (instance->requestorId && !reason) { 3865 retval = 1; 3866 goto out; 3867 } 3868 3869 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ 3870 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) { 3871 if (instance->hb_host_mem->HB.fwCounter != 3872 instance->hb_host_mem->HB.driverCounter) { 3873 instance->hb_host_mem->HB.driverCounter = 3874 instance->hb_host_mem->HB.fwCounter; 3875 hb_seconds_missed = 0; 3876 } else { 3877 hb_seconds_missed++; 3878 if (hb_seconds_missed == 3879 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { 3880 dev_warn(&instance->pdev->dev, "SR-IOV:" 3881 " Heartbeat never completed " 3882 " while polling during I/O " 3883 " timeout handling for " 3884 "scsi%d.\n", 3885 instance->host->host_no); 3886 *convert = 1; 3887 retval = 1; 3888 goto out; 3889 } 3890 } 3891 } 3892 3893 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3894 outstanding = atomic_read(&instance->fw_outstanding); 3895 if (!outstanding) 3896 goto out; 3897 3898 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 3899 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 3900 "commands to complete for scsi%d\n", i, 3901 outstanding, instance->host->host_no); 3902 } 3903 msleep(1000); 3904 } 3905 3906 if (atomic_read(&instance->fw_outstanding)) { 3907 dev_err(&instance->pdev->dev, "pending commands remain after waiting, " 3908 "will reset adapter scsi%d.\n", 3909 instance->host->host_no); 3910 *convert = 1; 3911 retval = 1; 3912 } 3913 out: 3914 return retval; 3915 } 3916 3917 void megasas_reset_reply_desc(struct megasas_instance *instance) 3918 { 3919 int i, j, count; 3920 struct fusion_context *fusion; 3921 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 3922 3923 fusion = instance->ctrl_context; 3924 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3925 for (i = 0 ; i < count ; i++) { 3926 fusion->last_reply_idx[i] = 0; 3927 reply_desc = fusion->reply_frames_desc[i]; 3928 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) 3929 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 3930 } 3931 } 3932 3933 /* 3934 * megasas_refire_mgmt_cmd : Re-fire management commands 3935 * @instance: Controller's soft instance 3936 */ 3937 void megasas_refire_mgmt_cmd(struct megasas_instance *instance) 3938 { 3939 int j; 3940 struct megasas_cmd_fusion *cmd_fusion; 3941 struct fusion_context *fusion; 3942 struct megasas_cmd *cmd_mfi; 3943 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3944 u16 smid; 3945 bool refire_cmd = 0; 3946 u8 result; 3947 u32 opcode = 0; 3948 3949 fusion = instance->ctrl_context; 3950 3951 /* Re-fire management commands. 3952 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. 3953 */ 3954 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { 3955 cmd_fusion = fusion->cmd_list[j]; 3956 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3957 smid = le16_to_cpu(cmd_mfi->context.smid); 3958 result = REFIRE_CMD; 3959 3960 if (!smid) 3961 continue; 3962 3963 req_desc = megasas_get_request_descriptor(instance, smid - 1); 3964 3965 switch (cmd_mfi->frame->hdr.cmd) { 3966 case MFI_CMD_DCMD: 3967 opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode); 3968 /* Do not refire shutdown command */ 3969 if (opcode == MR_DCMD_CTRL_SHUTDOWN) { 3970 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; 3971 result = COMPLETE_CMD; 3972 break; 3973 } 3974 3975 refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) && 3976 (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) && 3977 !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); 3978 3979 if (!refire_cmd) 3980 result = RETURN_CMD; 3981 3982 break; 3983 case MFI_CMD_NVME: 3984 if (!instance->support_nvme_passthru) { 3985 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD; 3986 result = COMPLETE_CMD; 3987 } 3988 3989 break; 3990 default: 3991 break; 3992 } 3993 3994 switch (result) { 3995 case REFIRE_CMD: 3996 megasas_fire_cmd_fusion(instance, req_desc); 3997 break; 3998 case RETURN_CMD: 3999 megasas_return_cmd(instance, cmd_mfi); 4000 break; 4001 case COMPLETE_CMD: 4002 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 4003 break; 4004 } 4005 } 4006 } 4007 4008 /* 4009 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device 4010 * @instance: per adapter struct 4011 * @channel: the channel assigned by the OS 4012 * @id: the id assigned by the OS 4013 * 4014 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED 4015 */ 4016 4017 static int megasas_track_scsiio(struct megasas_instance *instance, 4018 int id, int channel) 4019 { 4020 int i, found = 0; 4021 struct megasas_cmd_fusion *cmd_fusion; 4022 struct fusion_context *fusion; 4023 fusion = instance->ctrl_context; 4024 4025 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4026 cmd_fusion = fusion->cmd_list[i]; 4027 if (cmd_fusion->scmd && 4028 (cmd_fusion->scmd->device->id == id && 4029 cmd_fusion->scmd->device->channel == channel)) { 4030 dev_info(&instance->pdev->dev, 4031 "SCSI commands pending to target" 4032 "channel %d id %d \tSMID: 0x%x\n", 4033 channel, id, cmd_fusion->index); 4034 scsi_print_command(cmd_fusion->scmd); 4035 found = 1; 4036 break; 4037 } 4038 } 4039 4040 return found ? FAILED : SUCCESS; 4041 } 4042 4043 /** 4044 * megasas_tm_response_code - translation of device response code 4045 * @ioc: per adapter object 4046 * @mpi_reply: MPI reply returned by firmware 4047 * 4048 * Return nothing. 4049 */ 4050 static void 4051 megasas_tm_response_code(struct megasas_instance *instance, 4052 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) 4053 { 4054 char *desc; 4055 4056 switch (mpi_reply->ResponseCode) { 4057 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: 4058 desc = "task management request completed"; 4059 break; 4060 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: 4061 desc = "invalid frame"; 4062 break; 4063 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: 4064 desc = "task management request not supported"; 4065 break; 4066 case MPI2_SCSITASKMGMT_RSP_TM_FAILED: 4067 desc = "task management request failed"; 4068 break; 4069 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: 4070 desc = "task management request succeeded"; 4071 break; 4072 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: 4073 desc = "invalid lun"; 4074 break; 4075 case 0xA: 4076 desc = "overlapped tag attempted"; 4077 break; 4078 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: 4079 desc = "task queued, however not sent to target"; 4080 break; 4081 default: 4082 desc = "unknown"; 4083 break; 4084 } 4085 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", 4086 mpi_reply->ResponseCode, desc); 4087 dev_dbg(&instance->pdev->dev, 4088 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" 4089 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", 4090 mpi_reply->TerminationCount, mpi_reply->DevHandle, 4091 mpi_reply->Function, mpi_reply->TaskType, 4092 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); 4093 } 4094 4095 /** 4096 * megasas_issue_tm - main routine for sending tm requests 4097 * @instance: per adapter struct 4098 * @device_handle: device handle 4099 * @channel: the channel assigned by the OS 4100 * @id: the id assigned by the OS 4101 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) 4102 * @smid_task: smid assigned to the task 4103 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF 4104 * Context: user 4105 * 4106 * MegaRaid use MPT interface for Task Magement request. 4107 * A generic API for sending task management requests to firmware. 4108 * 4109 * Return SUCCESS or FAILED. 4110 */ 4111 static int 4112 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, 4113 uint channel, uint id, u16 smid_task, u8 type) 4114 { 4115 struct MR_TASK_MANAGE_REQUEST *mr_request; 4116 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; 4117 unsigned long timeleft; 4118 struct megasas_cmd_fusion *cmd_fusion; 4119 struct megasas_cmd *cmd_mfi; 4120 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4121 struct fusion_context *fusion = NULL; 4122 struct megasas_cmd_fusion *scsi_lookup; 4123 int rc; 4124 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; 4125 4126 fusion = instance->ctrl_context; 4127 4128 cmd_mfi = megasas_get_cmd(instance); 4129 4130 if (!cmd_mfi) { 4131 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4132 __func__, __LINE__); 4133 return -ENOMEM; 4134 } 4135 4136 cmd_fusion = megasas_get_cmd_fusion(instance, 4137 instance->max_scsi_cmds + cmd_mfi->index); 4138 4139 /* Save the smid. To be used for returning the cmd */ 4140 cmd_mfi->context.smid = cmd_fusion->index; 4141 4142 req_desc = megasas_get_request_descriptor(instance, 4143 (cmd_fusion->index - 1)); 4144 4145 cmd_fusion->request_desc = req_desc; 4146 req_desc->Words = 0; 4147 4148 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; 4149 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); 4150 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; 4151 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 4152 mpi_request->DevHandle = cpu_to_le16(device_handle); 4153 mpi_request->TaskType = type; 4154 mpi_request->TaskMID = cpu_to_le16(smid_task); 4155 mpi_request->LUN[1] = 0; 4156 4157 4158 req_desc = cmd_fusion->request_desc; 4159 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); 4160 req_desc->HighPriority.RequestFlags = 4161 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << 4162 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 4163 req_desc->HighPriority.MSIxIndex = 0; 4164 req_desc->HighPriority.LMID = 0; 4165 req_desc->HighPriority.Reserved1 = 0; 4166 4167 if (channel < MEGASAS_MAX_PD_CHANNELS) 4168 mr_request->tmReqFlags.isTMForPD = 1; 4169 else 4170 mr_request->tmReqFlags.isTMForLD = 1; 4171 4172 init_completion(&cmd_fusion->done); 4173 megasas_fire_cmd_fusion(instance, req_desc); 4174 4175 timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ); 4176 4177 if (!timeleft) { 4178 dev_err(&instance->pdev->dev, 4179 "task mgmt type 0x%x timed out\n", type); 4180 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE; 4181 mutex_unlock(&instance->reset_mutex); 4182 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); 4183 mutex_lock(&instance->reset_mutex); 4184 return rc; 4185 } 4186 4187 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; 4188 megasas_tm_response_code(instance, mpi_reply); 4189 4190 megasas_return_cmd(instance, cmd_mfi); 4191 rc = SUCCESS; 4192 switch (type) { 4193 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4194 scsi_lookup = fusion->cmd_list[smid_task - 1]; 4195 4196 if (scsi_lookup->scmd == NULL) 4197 break; 4198 else { 4199 instance->instancet->disable_intr(instance); 4200 megasas_sync_irqs((unsigned long)instance); 4201 instance->instancet->enable_intr(instance); 4202 if (scsi_lookup->scmd == NULL) 4203 break; 4204 } 4205 rc = FAILED; 4206 break; 4207 4208 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4209 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) 4210 break; 4211 instance->instancet->disable_intr(instance); 4212 megasas_sync_irqs((unsigned long)instance); 4213 rc = megasas_track_scsiio(instance, id, channel); 4214 instance->instancet->enable_intr(instance); 4215 4216 break; 4217 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: 4218 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: 4219 break; 4220 default: 4221 rc = FAILED; 4222 break; 4223 } 4224 4225 return rc; 4226 4227 } 4228 4229 /* 4230 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI 4231 * @instance: per adapter struct 4232 * 4233 * Return Non Zero index, if SMID found in outstanding commands 4234 */ 4235 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) 4236 { 4237 int i, ret = 0; 4238 struct megasas_instance *instance; 4239 struct megasas_cmd_fusion *cmd_fusion; 4240 struct fusion_context *fusion; 4241 4242 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4243 4244 fusion = instance->ctrl_context; 4245 4246 for (i = 0; i < instance->max_scsi_cmds; i++) { 4247 cmd_fusion = fusion->cmd_list[i]; 4248 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { 4249 scmd_printk(KERN_NOTICE, scmd, "Abort request is for" 4250 " SMID: %d\n", cmd_fusion->index); 4251 ret = cmd_fusion->index; 4252 break; 4253 } 4254 } 4255 4256 return ret; 4257 } 4258 4259 /* 4260 * megasas_get_tm_devhandle - Get devhandle for TM request 4261 * @sdev- OS provided scsi device 4262 * 4263 * Returns- devhandle/targetID of SCSI device 4264 */ 4265 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) 4266 { 4267 u16 pd_index = 0; 4268 u32 device_id; 4269 struct megasas_instance *instance; 4270 struct fusion_context *fusion; 4271 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 4272 u16 devhandle = (u16)ULONG_MAX; 4273 4274 instance = (struct megasas_instance *)sdev->host->hostdata; 4275 fusion = instance->ctrl_context; 4276 4277 if (!MEGASAS_IS_LOGICAL(sdev)) { 4278 if (instance->use_seqnum_jbod_fp) { 4279 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) 4280 + sdev->id; 4281 pd_sync = (void *)fusion->pd_seq_sync 4282 [(instance->pd_seq_map_id - 1) & 1]; 4283 devhandle = pd_sync->seq[pd_index].devHandle; 4284 } else 4285 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" 4286 " without JBOD MAP support from %s %d\n", __func__, __LINE__); 4287 } else { 4288 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 4289 + sdev->id; 4290 devhandle = device_id; 4291 } 4292 4293 return devhandle; 4294 } 4295 4296 /* 4297 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters 4298 * @scmd : pointer to scsi command object 4299 * 4300 * Return SUCCESS, if command aborted else FAILED 4301 */ 4302 4303 int megasas_task_abort_fusion(struct scsi_cmnd *scmd) 4304 { 4305 struct megasas_instance *instance; 4306 u16 smid, devhandle; 4307 struct fusion_context *fusion; 4308 int ret; 4309 struct MR_PRIV_DEVICE *mr_device_priv_data; 4310 mr_device_priv_data = scmd->device->hostdata; 4311 4312 4313 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4314 fusion = instance->ctrl_context; 4315 4316 scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd); 4317 scsi_print_command(scmd); 4318 4319 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4320 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4321 "SCSI host:%d\n", instance->host->host_no); 4322 ret = FAILED; 4323 return ret; 4324 } 4325 4326 if (!mr_device_priv_data) { 4327 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4328 "scmd(%p)\n", scmd); 4329 scmd->result = DID_NO_CONNECT << 16; 4330 ret = SUCCESS; 4331 goto out; 4332 } 4333 4334 4335 if (!mr_device_priv_data->is_tm_capable) { 4336 ret = FAILED; 4337 goto out; 4338 } 4339 4340 mutex_lock(&instance->reset_mutex); 4341 4342 smid = megasas_fusion_smid_lookup(scmd); 4343 4344 if (!smid) { 4345 ret = SUCCESS; 4346 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" 4347 " issued is not found in oustanding commands\n"); 4348 mutex_unlock(&instance->reset_mutex); 4349 goto out; 4350 } 4351 4352 devhandle = megasas_get_tm_devhandle(scmd->device); 4353 4354 if (devhandle == (u16)ULONG_MAX) { 4355 ret = SUCCESS; 4356 sdev_printk(KERN_INFO, scmd->device, 4357 "task abort issued for invalid devhandle\n"); 4358 mutex_unlock(&instance->reset_mutex); 4359 goto out; 4360 } 4361 sdev_printk(KERN_INFO, scmd->device, 4362 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n", 4363 scmd, devhandle); 4364 4365 mr_device_priv_data->tm_busy = 1; 4366 ret = megasas_issue_tm(instance, devhandle, 4367 scmd->device->channel, scmd->device->id, smid, 4368 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK); 4369 mr_device_priv_data->tm_busy = 0; 4370 4371 mutex_unlock(&instance->reset_mutex); 4372 out: 4373 sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n", 4374 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 4375 4376 return ret; 4377 } 4378 4379 /* 4380 * megasas_reset_target_fusion : target reset function for fusion adapters 4381 * scmd: SCSI command pointer 4382 * 4383 * Returns SUCCESS if all commands associated with target aborted else FAILED 4384 */ 4385 4386 int megasas_reset_target_fusion(struct scsi_cmnd *scmd) 4387 { 4388 4389 struct megasas_instance *instance; 4390 int ret = FAILED; 4391 u16 devhandle; 4392 struct fusion_context *fusion; 4393 struct MR_PRIV_DEVICE *mr_device_priv_data; 4394 mr_device_priv_data = scmd->device->hostdata; 4395 4396 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4397 fusion = instance->ctrl_context; 4398 4399 sdev_printk(KERN_INFO, scmd->device, 4400 "target reset called for scmd(%p)\n", scmd); 4401 4402 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4403 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4404 "SCSI host:%d\n", instance->host->host_no); 4405 ret = FAILED; 4406 return ret; 4407 } 4408 4409 if (!mr_device_priv_data) { 4410 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4411 "scmd(%p)\n", scmd); 4412 scmd->result = DID_NO_CONNECT << 16; 4413 ret = SUCCESS; 4414 goto out; 4415 } 4416 4417 4418 if (!mr_device_priv_data->is_tm_capable) { 4419 ret = FAILED; 4420 goto out; 4421 } 4422 4423 mutex_lock(&instance->reset_mutex); 4424 devhandle = megasas_get_tm_devhandle(scmd->device); 4425 4426 if (devhandle == (u16)ULONG_MAX) { 4427 ret = SUCCESS; 4428 sdev_printk(KERN_INFO, scmd->device, 4429 "target reset issued for invalid devhandle\n"); 4430 mutex_unlock(&instance->reset_mutex); 4431 goto out; 4432 } 4433 4434 sdev_printk(KERN_INFO, scmd->device, 4435 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n", 4436 scmd, devhandle); 4437 mr_device_priv_data->tm_busy = 1; 4438 ret = megasas_issue_tm(instance, devhandle, 4439 scmd->device->channel, scmd->device->id, 0, 4440 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET); 4441 mr_device_priv_data->tm_busy = 0; 4442 mutex_unlock(&instance->reset_mutex); 4443 out: 4444 scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n", 4445 (ret == SUCCESS) ? "SUCCESS" : "FAILED"); 4446 4447 return ret; 4448 } 4449 4450 /*SRIOV get other instance in cluster if any*/ 4451 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) 4452 { 4453 int i; 4454 4455 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { 4456 if (megasas_mgmt_info.instance[i] && 4457 (megasas_mgmt_info.instance[i] != instance) && 4458 megasas_mgmt_info.instance[i]->requestorId && 4459 megasas_mgmt_info.instance[i]->peerIsPresent && 4460 (memcmp((megasas_mgmt_info.instance[i]->clusterId), 4461 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) 4462 return megasas_mgmt_info.instance[i]; 4463 } 4464 return NULL; 4465 } 4466 4467 /* Check for a second path that is currently UP */ 4468 int megasas_check_mpio_paths(struct megasas_instance *instance, 4469 struct scsi_cmnd *scmd) 4470 { 4471 struct megasas_instance *peer_instance = NULL; 4472 int retval = (DID_REQUEUE << 16); 4473 4474 if (instance->peerIsPresent) { 4475 peer_instance = megasas_get_peer_instance(instance); 4476 if ((peer_instance) && 4477 (atomic_read(&peer_instance->adprecovery) == 4478 MEGASAS_HBA_OPERATIONAL)) 4479 retval = (DID_NO_CONNECT << 16); 4480 } 4481 return retval; 4482 } 4483 4484 /* Core fusion reset function */ 4485 int megasas_reset_fusion(struct Scsi_Host *shost, int reason) 4486 { 4487 int retval = SUCCESS, i, j, convert = 0; 4488 struct megasas_instance *instance; 4489 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; 4490 struct fusion_context *fusion; 4491 u32 abs_state, status_reg, reset_adapter; 4492 u32 io_timeout_in_crash_mode = 0; 4493 struct scsi_cmnd *scmd_local = NULL; 4494 struct scsi_device *sdev; 4495 4496 instance = (struct megasas_instance *)shost->hostdata; 4497 fusion = instance->ctrl_context; 4498 4499 mutex_lock(&instance->reset_mutex); 4500 4501 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 4502 dev_warn(&instance->pdev->dev, "Hardware critical error, " 4503 "returning FAILED for scsi%d.\n", 4504 instance->host->host_no); 4505 mutex_unlock(&instance->reset_mutex); 4506 return FAILED; 4507 } 4508 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); 4509 abs_state = status_reg & MFI_STATE_MASK; 4510 4511 /* IO timeout detected, forcibly put FW in FAULT state */ 4512 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && 4513 instance->crash_dump_app_support && reason) { 4514 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " 4515 "forcibly FAULT Firmware\n"); 4516 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4517 status_reg = readl(&instance->reg_set->doorbell); 4518 writel(status_reg | MFI_STATE_FORCE_OCR, 4519 &instance->reg_set->doorbell); 4520 readl(&instance->reg_set->doorbell); 4521 mutex_unlock(&instance->reset_mutex); 4522 do { 4523 ssleep(3); 4524 io_timeout_in_crash_mode++; 4525 dev_dbg(&instance->pdev->dev, "waiting for [%d] " 4526 "seconds for crash dump collection and OCR " 4527 "to be done\n", (io_timeout_in_crash_mode * 3)); 4528 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 4529 (io_timeout_in_crash_mode < 80)); 4530 4531 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 4532 dev_info(&instance->pdev->dev, "OCR done for IO " 4533 "timeout case\n"); 4534 retval = SUCCESS; 4535 } else { 4536 dev_info(&instance->pdev->dev, "Controller is not " 4537 "operational after 240 seconds wait for IO " 4538 "timeout case in FW crash dump mode\n do " 4539 "OCR/kill adapter\n"); 4540 retval = megasas_reset_fusion(shost, 0); 4541 } 4542 return retval; 4543 } 4544 4545 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 4546 del_timer_sync(&instance->sriov_heartbeat_timer); 4547 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4548 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); 4549 instance->instancet->disable_intr(instance); 4550 megasas_sync_irqs((unsigned long)instance); 4551 4552 /* First try waiting for commands to complete */ 4553 if (megasas_wait_for_outstanding_fusion(instance, reason, 4554 &convert)) { 4555 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4556 dev_warn(&instance->pdev->dev, "resetting fusion " 4557 "adapter scsi%d.\n", instance->host->host_no); 4558 if (convert) 4559 reason = 0; 4560 4561 if (megasas_dbg_lvl & OCR_LOGS) 4562 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); 4563 4564 /* Now return commands back to the OS */ 4565 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4566 cmd_fusion = fusion->cmd_list[i]; 4567 /*check for extra commands issued by driver*/ 4568 if (instance->adapter_type == VENTURA_SERIES) { 4569 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; 4570 megasas_return_cmd_fusion(instance, r1_cmd); 4571 } 4572 scmd_local = cmd_fusion->scmd; 4573 if (cmd_fusion->scmd) { 4574 if (megasas_dbg_lvl & OCR_LOGS) { 4575 sdev_printk(KERN_INFO, 4576 cmd_fusion->scmd->device, "SMID: 0x%x\n", 4577 cmd_fusion->index); 4578 scsi_print_command(cmd_fusion->scmd); 4579 } 4580 4581 scmd_local->result = 4582 megasas_check_mpio_paths(instance, 4583 scmd_local); 4584 if (instance->ldio_threshold && 4585 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 4586 atomic_dec(&instance->ldio_outstanding); 4587 megasas_return_cmd_fusion(instance, cmd_fusion); 4588 scsi_dma_unmap(scmd_local); 4589 scmd_local->scsi_done(scmd_local); 4590 } 4591 } 4592 4593 atomic_set(&instance->fw_outstanding, 0); 4594 4595 status_reg = instance->instancet->read_fw_status_reg( 4596 instance->reg_set); 4597 abs_state = status_reg & MFI_STATE_MASK; 4598 reset_adapter = status_reg & MFI_RESET_ADAPTER; 4599 if (instance->disableOnlineCtrlReset || 4600 (abs_state == MFI_STATE_FAULT && !reset_adapter)) { 4601 /* Reset not supported, kill adapter */ 4602 dev_warn(&instance->pdev->dev, "Reset not supported" 4603 ", killing adapter scsi%d.\n", 4604 instance->host->host_no); 4605 megaraid_sas_kill_hba(instance); 4606 instance->skip_heartbeat_timer_del = 1; 4607 retval = FAILED; 4608 goto out; 4609 } 4610 4611 /* Let SR-IOV VF & PF sync up if there was a HB failure */ 4612 if (instance->requestorId && !reason) { 4613 msleep(MEGASAS_OCR_SETTLE_TIME_VF); 4614 goto transition_to_ready; 4615 } 4616 4617 /* Now try to reset the chip */ 4618 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { 4619 4620 if (instance->instancet->adp_reset 4621 (instance, instance->reg_set)) 4622 continue; 4623 transition_to_ready: 4624 /* Wait for FW to become ready */ 4625 if (megasas_transition_to_ready(instance, 1)) { 4626 dev_warn(&instance->pdev->dev, 4627 "Failed to transition controller to ready for " 4628 "scsi%d.\n", instance->host->host_no); 4629 if (instance->requestorId && !reason) 4630 goto fail_kill_adapter; 4631 else 4632 continue; 4633 } 4634 megasas_reset_reply_desc(instance); 4635 megasas_fusion_update_can_queue(instance, OCR_CONTEXT); 4636 4637 if (megasas_ioc_init_fusion(instance)) { 4638 if (instance->requestorId && !reason) 4639 goto fail_kill_adapter; 4640 else 4641 continue; 4642 } 4643 4644 if (megasas_get_ctrl_info(instance)) { 4645 dev_info(&instance->pdev->dev, 4646 "Failed from %s %d\n", 4647 __func__, __LINE__); 4648 megaraid_sas_kill_hba(instance); 4649 retval = FAILED; 4650 goto out; 4651 } 4652 4653 megasas_refire_mgmt_cmd(instance); 4654 4655 /* Reset load balance info */ 4656 if (fusion->load_balance_info) 4657 memset(fusion->load_balance_info, 0, 4658 (sizeof(struct LD_LOAD_BALANCE_INFO) * 4659 MAX_LOGICAL_DRIVES_EXT)); 4660 4661 if (!megasas_get_map_info(instance)) 4662 megasas_sync_map_info(instance); 4663 4664 megasas_setup_jbod_map(instance); 4665 4666 shost_for_each_device(sdev, shost) 4667 megasas_set_dynamic_target_properties(sdev); 4668 4669 /* reset stream detection array */ 4670 if (instance->adapter_type == VENTURA_SERIES) { 4671 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { 4672 memset(fusion->stream_detect_by_ld[j], 4673 0, sizeof(struct LD_STREAM_DETECT)); 4674 fusion->stream_detect_by_ld[j]->mru_bit_map 4675 = MR_STREAM_BITMAP; 4676 } 4677 } 4678 4679 clear_bit(MEGASAS_FUSION_IN_RESET, 4680 &instance->reset_flags); 4681 instance->instancet->enable_intr(instance); 4682 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4683 4684 dev_info(&instance->pdev->dev, "Interrupts are enabled and" 4685 " controller is OPERATIONAL for scsi:%d\n", 4686 instance->host->host_no); 4687 4688 /* Restart SR-IOV heartbeat */ 4689 if (instance->requestorId) { 4690 if (!megasas_sriov_start_heartbeat(instance, 0)) 4691 megasas_start_timer(instance); 4692 else 4693 instance->skip_heartbeat_timer_del = 1; 4694 } 4695 4696 if (instance->crash_dump_drv_support && 4697 instance->crash_dump_app_support) 4698 megasas_set_crash_dump_params(instance, 4699 MR_CRASH_BUF_TURN_ON); 4700 else 4701 megasas_set_crash_dump_params(instance, 4702 MR_CRASH_BUF_TURN_OFF); 4703 4704 retval = SUCCESS; 4705 4706 /* Adapter reset completed successfully */ 4707 dev_warn(&instance->pdev->dev, 4708 "Reset successful for scsi%d.\n", 4709 instance->host->host_no); 4710 4711 goto out; 4712 } 4713 fail_kill_adapter: 4714 /* Reset failed, kill the adapter */ 4715 dev_warn(&instance->pdev->dev, "Reset failed, killing " 4716 "adapter scsi%d.\n", instance->host->host_no); 4717 megaraid_sas_kill_hba(instance); 4718 instance->skip_heartbeat_timer_del = 1; 4719 retval = FAILED; 4720 } else { 4721 /* For VF: Restart HB timer if we didn't OCR */ 4722 if (instance->requestorId) { 4723 megasas_start_timer(instance); 4724 } 4725 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4726 instance->instancet->enable_intr(instance); 4727 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4728 } 4729 out: 4730 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4731 mutex_unlock(&instance->reset_mutex); 4732 return retval; 4733 } 4734 4735 /* Fusion Crash dump collection work queue */ 4736 void megasas_fusion_crash_dump_wq(struct work_struct *work) 4737 { 4738 struct megasas_instance *instance = 4739 container_of(work, struct megasas_instance, crash_init); 4740 u32 status_reg; 4741 u8 partial_copy = 0; 4742 4743 4744 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); 4745 4746 /* 4747 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer 4748 * to host crash buffers 4749 */ 4750 if (instance->drv_buf_index == 0) { 4751 /* Buffer is already allocated for old Crash dump. 4752 * Do OCR and do not wait for crash dump collection 4753 */ 4754 if (instance->drv_buf_alloc) { 4755 dev_info(&instance->pdev->dev, "earlier crash dump is " 4756 "not yet copied by application, ignoring this " 4757 "crash dump and initiating OCR\n"); 4758 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4759 writel(status_reg, 4760 &instance->reg_set->outbound_scratch_pad); 4761 readl(&instance->reg_set->outbound_scratch_pad); 4762 return; 4763 } 4764 megasas_alloc_host_crash_buffer(instance); 4765 dev_info(&instance->pdev->dev, "Number of host crash buffers " 4766 "allocated: %d\n", instance->drv_buf_alloc); 4767 } 4768 4769 /* 4770 * Driver has allocated max buffers, which can be allocated 4771 * and FW has more crash dump data, then driver will 4772 * ignore the data. 4773 */ 4774 if (instance->drv_buf_index >= (instance->drv_buf_alloc)) { 4775 dev_info(&instance->pdev->dev, "Driver is done copying " 4776 "the buffer: %d\n", instance->drv_buf_alloc); 4777 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4778 partial_copy = 1; 4779 } else { 4780 memcpy(instance->crash_buf[instance->drv_buf_index], 4781 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); 4782 instance->drv_buf_index++; 4783 status_reg &= ~MFI_STATE_DMADONE; 4784 } 4785 4786 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { 4787 dev_info(&instance->pdev->dev, "Crash Dump is available,number " 4788 "of copied buffers: %d\n", instance->drv_buf_index); 4789 instance->fw_crash_buffer_size = instance->drv_buf_index; 4790 instance->fw_crash_state = AVAILABLE; 4791 instance->drv_buf_index = 0; 4792 writel(status_reg, &instance->reg_set->outbound_scratch_pad); 4793 readl(&instance->reg_set->outbound_scratch_pad); 4794 if (!partial_copy) 4795 megasas_reset_fusion(instance->host, 0); 4796 } else { 4797 writel(status_reg, &instance->reg_set->outbound_scratch_pad); 4798 readl(&instance->reg_set->outbound_scratch_pad); 4799 } 4800 } 4801 4802 4803 /* Fusion OCR work queue */ 4804 void megasas_fusion_ocr_wq(struct work_struct *work) 4805 { 4806 struct megasas_instance *instance = 4807 container_of(work, struct megasas_instance, work_init); 4808 4809 megasas_reset_fusion(instance->host, 0); 4810 } 4811 4812 /* Allocate fusion context */ 4813 int 4814 megasas_alloc_fusion_context(struct megasas_instance *instance) 4815 { 4816 struct fusion_context *fusion; 4817 4818 instance->ctrl_context = kzalloc(sizeof(struct fusion_context), 4819 GFP_KERNEL); 4820 if (!instance->ctrl_context) { 4821 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4822 __func__, __LINE__); 4823 return -ENOMEM; 4824 } 4825 4826 fusion = instance->ctrl_context; 4827 4828 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4829 sizeof(LD_SPAN_INFO)); 4830 fusion->log_to_span = 4831 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4832 fusion->log_to_span_pages); 4833 if (!fusion->log_to_span) { 4834 fusion->log_to_span = vzalloc(MAX_LOGICAL_DRIVES_EXT * 4835 sizeof(LD_SPAN_INFO)); 4836 if (!fusion->log_to_span) { 4837 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4838 __func__, __LINE__); 4839 return -ENOMEM; 4840 } 4841 } 4842 4843 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4844 sizeof(struct LD_LOAD_BALANCE_INFO)); 4845 fusion->load_balance_info = 4846 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4847 fusion->load_balance_info_pages); 4848 if (!fusion->load_balance_info) { 4849 fusion->load_balance_info = vzalloc(MAX_LOGICAL_DRIVES_EXT * 4850 sizeof(struct LD_LOAD_BALANCE_INFO)); 4851 if (!fusion->load_balance_info) 4852 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " 4853 "continuing without Load Balance support\n"); 4854 } 4855 4856 return 0; 4857 } 4858 4859 void 4860 megasas_free_fusion_context(struct megasas_instance *instance) 4861 { 4862 struct fusion_context *fusion = instance->ctrl_context; 4863 4864 if (fusion) { 4865 if (fusion->load_balance_info) { 4866 if (is_vmalloc_addr(fusion->load_balance_info)) 4867 vfree(fusion->load_balance_info); 4868 else 4869 free_pages((ulong)fusion->load_balance_info, 4870 fusion->load_balance_info_pages); 4871 } 4872 4873 if (fusion->log_to_span) { 4874 if (is_vmalloc_addr(fusion->log_to_span)) 4875 vfree(fusion->log_to_span); 4876 else 4877 free_pages((ulong)fusion->log_to_span, 4878 fusion->log_to_span_pages); 4879 } 4880 4881 kfree(fusion); 4882 } 4883 } 4884 4885 struct megasas_instance_template megasas_instance_template_fusion = { 4886 .enable_intr = megasas_enable_intr_fusion, 4887 .disable_intr = megasas_disable_intr_fusion, 4888 .clear_intr = megasas_clear_intr_fusion, 4889 .read_fw_status_reg = megasas_read_fw_status_reg_fusion, 4890 .adp_reset = megasas_adp_reset_fusion, 4891 .check_reset = megasas_check_reset_fusion, 4892 .service_isr = megasas_isr_fusion, 4893 .tasklet = megasas_complete_cmd_dpc_fusion, 4894 .init_adapter = megasas_init_adapter_fusion, 4895 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, 4896 .issue_dcmd = megasas_issue_dcmd_fusion, 4897 }; 4898