1 /* 2 * Linux MegaRAID driver for SAS based RAID controllers 3 * 4 * Copyright (c) 2009-2013 LSI Corporation 5 * Copyright (c) 2013-2014 Avago Technologies 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. 19 * 20 * FILE: megaraid_sas_fusion.c 21 * 22 * Authors: Avago Technologies 23 * Sumant Patro 24 * Adam Radford 25 * Kashyap Desai <kashyap.desai@avagotech.com> 26 * Sumit Saxena <sumit.saxena@avagotech.com> 27 * 28 * Send feedback to: megaraidlinux.pdl@avagotech.com 29 * 30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90, 31 * San Jose, California 95131 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/types.h> 36 #include <linux/pci.h> 37 #include <linux/list.h> 38 #include <linux/moduleparam.h> 39 #include <linux/module.h> 40 #include <linux/spinlock.h> 41 #include <linux/interrupt.h> 42 #include <linux/delay.h> 43 #include <linux/uio.h> 44 #include <linux/uaccess.h> 45 #include <linux/fs.h> 46 #include <linux/compat.h> 47 #include <linux/blkdev.h> 48 #include <linux/mutex.h> 49 #include <linux/poll.h> 50 #include <linux/vmalloc.h> 51 52 #include <scsi/scsi.h> 53 #include <scsi/scsi_cmnd.h> 54 #include <scsi/scsi_device.h> 55 #include <scsi/scsi_host.h> 56 #include <scsi/scsi_dbg.h> 57 #include <linux/dmi.h> 58 59 #include "megaraid_sas_fusion.h" 60 #include "megaraid_sas.h" 61 62 63 extern void megasas_free_cmds(struct megasas_instance *instance); 64 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance 65 *instance); 66 extern void 67 megasas_complete_cmd(struct megasas_instance *instance, 68 struct megasas_cmd *cmd, u8 alt_status); 69 int 70 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 71 int seconds); 72 73 void 74 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd); 75 int megasas_alloc_cmds(struct megasas_instance *instance); 76 int 77 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs); 78 int 79 megasas_issue_polled(struct megasas_instance *instance, 80 struct megasas_cmd *cmd); 81 void 82 megasas_check_and_restore_queue_depth(struct megasas_instance *instance); 83 84 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr); 85 void megaraid_sas_kill_hba(struct megasas_instance *instance); 86 87 extern u32 megasas_dbg_lvl; 88 int megasas_sriov_start_heartbeat(struct megasas_instance *instance, 89 int initial); 90 void megasas_start_timer(struct megasas_instance *instance); 91 extern struct megasas_mgmt_info megasas_mgmt_info; 92 extern unsigned int resetwaittime; 93 extern unsigned int dual_qdepth_disable; 94 static void megasas_free_rdpq_fusion(struct megasas_instance *instance); 95 static void megasas_free_reply_fusion(struct megasas_instance *instance); 96 static inline 97 void megasas_configure_queue_sizes(struct megasas_instance *instance); 98 99 /** 100 * megasas_check_same_4gb_region - check if allocation 101 * crosses same 4GB boundary or not 102 * @instance - adapter's soft instance 103 * start_addr - start address of DMA allocation 104 * size - size of allocation in bytes 105 * return - true : allocation does not cross same 106 * 4GB boundary 107 * false: allocation crosses same 108 * 4GB boundary 109 */ 110 static inline bool megasas_check_same_4gb_region 111 (struct megasas_instance *instance, dma_addr_t start_addr, size_t size) 112 { 113 dma_addr_t end_addr; 114 115 end_addr = start_addr + size; 116 117 if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) { 118 dev_err(&instance->pdev->dev, 119 "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n", 120 (unsigned long long)start_addr, 121 (unsigned long long)end_addr); 122 return false; 123 } 124 125 return true; 126 } 127 128 /** 129 * megasas_enable_intr_fusion - Enables interrupts 130 * @regs: MFI register set 131 */ 132 void 133 megasas_enable_intr_fusion(struct megasas_instance *instance) 134 { 135 struct megasas_register_set __iomem *regs; 136 regs = instance->reg_set; 137 138 instance->mask_interrupts = 0; 139 /* For Thunderbolt/Invader also clear intr on enable */ 140 writel(~0, ®s->outbound_intr_status); 141 readl(®s->outbound_intr_status); 142 143 writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask); 144 145 /* Dummy readl to force pci flush */ 146 readl(®s->outbound_intr_mask); 147 } 148 149 /** 150 * megasas_disable_intr_fusion - Disables interrupt 151 * @regs: MFI register set 152 */ 153 void 154 megasas_disable_intr_fusion(struct megasas_instance *instance) 155 { 156 u32 mask = 0xFFFFFFFF; 157 u32 status; 158 struct megasas_register_set __iomem *regs; 159 regs = instance->reg_set; 160 instance->mask_interrupts = 1; 161 162 writel(mask, ®s->outbound_intr_mask); 163 /* Dummy readl to force pci flush */ 164 status = readl(®s->outbound_intr_mask); 165 } 166 167 int 168 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs) 169 { 170 u32 status; 171 /* 172 * Check if it is our interrupt 173 */ 174 status = readl(®s->outbound_intr_status); 175 176 if (status & 1) { 177 writel(status, ®s->outbound_intr_status); 178 readl(®s->outbound_intr_status); 179 return 1; 180 } 181 if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK)) 182 return 0; 183 184 return 1; 185 } 186 187 /** 188 * megasas_get_cmd_fusion - Get a command from the free pool 189 * @instance: Adapter soft state 190 * 191 * Returns a blk_tag indexed mpt frame 192 */ 193 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance 194 *instance, u32 blk_tag) 195 { 196 struct fusion_context *fusion; 197 198 fusion = instance->ctrl_context; 199 return fusion->cmd_list[blk_tag]; 200 } 201 202 /** 203 * megasas_return_cmd_fusion - Return a cmd to free command pool 204 * @instance: Adapter soft state 205 * @cmd: Command packet to be returned to free command pool 206 */ 207 inline void megasas_return_cmd_fusion(struct megasas_instance *instance, 208 struct megasas_cmd_fusion *cmd) 209 { 210 cmd->scmd = NULL; 211 memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE); 212 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 213 cmd->cmd_completed = false; 214 } 215 216 /** 217 * megasas_fire_cmd_fusion - Sends command to the FW 218 * @instance: Adapter soft state 219 * @req_desc: 32bit or 64bit Request descriptor 220 * 221 * Perform PCI Write. Ventura supports 32 bit Descriptor. 222 * Prior to Ventura (12G) MR controller supports 64 bit Descriptor. 223 */ 224 225 static void 226 megasas_fire_cmd_fusion(struct megasas_instance *instance, 227 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc) 228 { 229 if (instance->adapter_type == VENTURA_SERIES) 230 writel(le32_to_cpu(req_desc->u.low), 231 &instance->reg_set->inbound_single_queue_port); 232 else { 233 #if defined(writeq) && defined(CONFIG_64BIT) 234 u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) | 235 le32_to_cpu(req_desc->u.low)); 236 237 writeq(req_data, &instance->reg_set->inbound_low_queue_port); 238 #else 239 unsigned long flags; 240 spin_lock_irqsave(&instance->hba_lock, flags); 241 writel(le32_to_cpu(req_desc->u.low), 242 &instance->reg_set->inbound_low_queue_port); 243 writel(le32_to_cpu(req_desc->u.high), 244 &instance->reg_set->inbound_high_queue_port); 245 mmiowb(); 246 spin_unlock_irqrestore(&instance->hba_lock, flags); 247 #endif 248 } 249 } 250 251 /** 252 * megasas_fusion_update_can_queue - Do all Adapter Queue depth related calculations here 253 * @instance: Adapter soft state 254 * fw_boot_context: Whether this function called during probe or after OCR 255 * 256 * This function is only for fusion controllers. 257 * Update host can queue, if firmware downgrade max supported firmware commands. 258 * Firmware upgrade case will be skiped because underlying firmware has 259 * more resource than exposed to the OS. 260 * 261 */ 262 static void 263 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context) 264 { 265 u16 cur_max_fw_cmds = 0; 266 u16 ldio_threshold = 0; 267 struct megasas_register_set __iomem *reg_set; 268 269 reg_set = instance->reg_set; 270 271 /* ventura FW does not fill outbound_scratch_pad_3 with queue depth */ 272 if (instance->adapter_type < VENTURA_SERIES) 273 cur_max_fw_cmds = 274 readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF; 275 276 if (dual_qdepth_disable || !cur_max_fw_cmds) 277 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF; 278 else 279 ldio_threshold = 280 (instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS; 281 282 dev_info(&instance->pdev->dev, 283 "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n", 284 cur_max_fw_cmds, ldio_threshold); 285 286 if (fw_boot_context == OCR_CONTEXT) { 287 cur_max_fw_cmds = cur_max_fw_cmds - 1; 288 if (cur_max_fw_cmds < instance->max_fw_cmds) { 289 instance->cur_can_queue = 290 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS + 291 MEGASAS_FUSION_IOCTL_CMDS); 292 instance->host->can_queue = instance->cur_can_queue; 293 instance->ldio_threshold = ldio_threshold; 294 } 295 } else { 296 instance->max_fw_cmds = cur_max_fw_cmds; 297 instance->ldio_threshold = ldio_threshold; 298 299 if (reset_devices) 300 instance->max_fw_cmds = min(instance->max_fw_cmds, 301 (u16)MEGASAS_KDUMP_QUEUE_DEPTH); 302 /* 303 * Reduce the max supported cmds by 1. This is to ensure that the 304 * reply_q_sz (1 more than the max cmd that driver may send) 305 * does not exceed max cmds that the FW can support 306 */ 307 instance->max_fw_cmds = instance->max_fw_cmds-1; 308 } 309 } 310 /** 311 * megasas_free_cmds_fusion - Free all the cmds in the free cmd pool 312 * @instance: Adapter soft state 313 */ 314 void 315 megasas_free_cmds_fusion(struct megasas_instance *instance) 316 { 317 int i; 318 struct fusion_context *fusion = instance->ctrl_context; 319 struct megasas_cmd_fusion *cmd; 320 321 if (fusion->sense) 322 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 323 fusion->sense_phys_addr); 324 325 /* SG */ 326 if (fusion->cmd_list) { 327 for (i = 0; i < instance->max_mpt_cmds; i++) { 328 cmd = fusion->cmd_list[i]; 329 if (cmd) { 330 if (cmd->sg_frame) 331 dma_pool_free(fusion->sg_dma_pool, 332 cmd->sg_frame, 333 cmd->sg_frame_phys_addr); 334 } 335 kfree(cmd); 336 } 337 kfree(fusion->cmd_list); 338 } 339 340 if (fusion->sg_dma_pool) { 341 dma_pool_destroy(fusion->sg_dma_pool); 342 fusion->sg_dma_pool = NULL; 343 } 344 if (fusion->sense_dma_pool) { 345 dma_pool_destroy(fusion->sense_dma_pool); 346 fusion->sense_dma_pool = NULL; 347 } 348 349 350 /* Reply Frame, Desc*/ 351 if (instance->is_rdpq) 352 megasas_free_rdpq_fusion(instance); 353 else 354 megasas_free_reply_fusion(instance); 355 356 /* Request Frame, Desc*/ 357 if (fusion->req_frames_desc) 358 dma_free_coherent(&instance->pdev->dev, 359 fusion->request_alloc_sz, fusion->req_frames_desc, 360 fusion->req_frames_desc_phys); 361 if (fusion->io_request_frames) 362 dma_pool_free(fusion->io_request_frames_pool, 363 fusion->io_request_frames, 364 fusion->io_request_frames_phys); 365 if (fusion->io_request_frames_pool) { 366 dma_pool_destroy(fusion->io_request_frames_pool); 367 fusion->io_request_frames_pool = NULL; 368 } 369 } 370 371 /** 372 * megasas_create_sg_sense_fusion - Creates DMA pool for cmd frames 373 * @instance: Adapter soft state 374 * 375 */ 376 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance) 377 { 378 int i; 379 u16 max_cmd; 380 struct fusion_context *fusion; 381 struct megasas_cmd_fusion *cmd; 382 int sense_sz; 383 u32 offset; 384 385 fusion = instance->ctrl_context; 386 max_cmd = instance->max_fw_cmds; 387 sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE; 388 389 fusion->sg_dma_pool = 390 dma_pool_create("mr_sg", &instance->pdev->dev, 391 instance->max_chain_frame_sz, 392 MR_DEFAULT_NVME_PAGE_SIZE, 0); 393 /* SCSI_SENSE_BUFFERSIZE = 96 bytes */ 394 fusion->sense_dma_pool = 395 dma_pool_create("mr_sense", &instance->pdev->dev, 396 sense_sz, 64, 0); 397 398 if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) { 399 dev_err(&instance->pdev->dev, 400 "Failed from %s %d\n", __func__, __LINE__); 401 return -ENOMEM; 402 } 403 404 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 405 GFP_KERNEL, &fusion->sense_phys_addr); 406 if (!fusion->sense) { 407 dev_err(&instance->pdev->dev, 408 "failed from %s %d\n", __func__, __LINE__); 409 return -ENOMEM; 410 } 411 412 /* sense buffer, request frame and reply desc pool requires to be in 413 * same 4 gb region. Below function will check this. 414 * In case of failure, new pci pool will be created with updated 415 * alignment. 416 * Older allocation and pool will be destroyed. 417 * Alignment will be used such a way that next allocation if success, 418 * will always meet same 4gb region requirement. 419 * Actual requirement is not alignment, but we need start and end of 420 * DMA address must have same upper 32 bit address. 421 */ 422 423 if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr, 424 sense_sz)) { 425 dma_pool_free(fusion->sense_dma_pool, fusion->sense, 426 fusion->sense_phys_addr); 427 fusion->sense = NULL; 428 dma_pool_destroy(fusion->sense_dma_pool); 429 430 fusion->sense_dma_pool = 431 dma_pool_create("mr_sense_align", &instance->pdev->dev, 432 sense_sz, roundup_pow_of_two(sense_sz), 433 0); 434 if (!fusion->sense_dma_pool) { 435 dev_err(&instance->pdev->dev, 436 "Failed from %s %d\n", __func__, __LINE__); 437 return -ENOMEM; 438 } 439 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool, 440 GFP_KERNEL, 441 &fusion->sense_phys_addr); 442 if (!fusion->sense) { 443 dev_err(&instance->pdev->dev, 444 "failed from %s %d\n", __func__, __LINE__); 445 return -ENOMEM; 446 } 447 } 448 449 /* 450 * Allocate and attach a frame to each of the commands in cmd_list 451 */ 452 for (i = 0; i < max_cmd; i++) { 453 cmd = fusion->cmd_list[i]; 454 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool, 455 GFP_KERNEL, &cmd->sg_frame_phys_addr); 456 457 offset = SCSI_SENSE_BUFFERSIZE * i; 458 cmd->sense = (u8 *)fusion->sense + offset; 459 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 460 461 if (!cmd->sg_frame) { 462 dev_err(&instance->pdev->dev, 463 "Failed from %s %d\n", __func__, __LINE__); 464 return -ENOMEM; 465 } 466 } 467 468 /* create sense buffer for the raid 1/10 fp */ 469 for (i = max_cmd; i < instance->max_mpt_cmds; i++) { 470 cmd = fusion->cmd_list[i]; 471 offset = SCSI_SENSE_BUFFERSIZE * i; 472 cmd->sense = (u8 *)fusion->sense + offset; 473 cmd->sense_phys_addr = fusion->sense_phys_addr + offset; 474 475 } 476 477 return 0; 478 } 479 480 int 481 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance) 482 { 483 u32 max_mpt_cmd, i, j; 484 struct fusion_context *fusion; 485 486 fusion = instance->ctrl_context; 487 488 max_mpt_cmd = instance->max_mpt_cmds; 489 490 /* 491 * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers. 492 * Allocate the dynamic array first and then allocate individual 493 * commands. 494 */ 495 fusion->cmd_list = 496 kzalloc(sizeof(struct megasas_cmd_fusion *) * max_mpt_cmd, 497 GFP_KERNEL); 498 if (!fusion->cmd_list) { 499 dev_err(&instance->pdev->dev, 500 "Failed from %s %d\n", __func__, __LINE__); 501 return -ENOMEM; 502 } 503 504 for (i = 0; i < max_mpt_cmd; i++) { 505 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion), 506 GFP_KERNEL); 507 if (!fusion->cmd_list[i]) { 508 for (j = 0; j < i; j++) 509 kfree(fusion->cmd_list[j]); 510 kfree(fusion->cmd_list); 511 dev_err(&instance->pdev->dev, 512 "Failed from %s %d\n", __func__, __LINE__); 513 return -ENOMEM; 514 } 515 } 516 517 return 0; 518 } 519 int 520 megasas_alloc_request_fusion(struct megasas_instance *instance) 521 { 522 struct fusion_context *fusion; 523 524 fusion = instance->ctrl_context; 525 526 retry_alloc: 527 fusion->io_request_frames_pool = 528 dma_pool_create("mr_ioreq", &instance->pdev->dev, 529 fusion->io_frames_alloc_sz, 16, 0); 530 531 if (!fusion->io_request_frames_pool) { 532 dev_err(&instance->pdev->dev, 533 "Failed from %s %d\n", __func__, __LINE__); 534 return -ENOMEM; 535 } 536 537 fusion->io_request_frames = 538 dma_pool_alloc(fusion->io_request_frames_pool, 539 GFP_KERNEL, &fusion->io_request_frames_phys); 540 if (!fusion->io_request_frames) { 541 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) { 542 instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT; 543 dma_pool_destroy(fusion->io_request_frames_pool); 544 megasas_configure_queue_sizes(instance); 545 goto retry_alloc; 546 } else { 547 dev_err(&instance->pdev->dev, 548 "Failed from %s %d\n", __func__, __LINE__); 549 return -ENOMEM; 550 } 551 } 552 553 if (!megasas_check_same_4gb_region(instance, 554 fusion->io_request_frames_phys, 555 fusion->io_frames_alloc_sz)) { 556 dma_pool_free(fusion->io_request_frames_pool, 557 fusion->io_request_frames, 558 fusion->io_request_frames_phys); 559 fusion->io_request_frames = NULL; 560 dma_pool_destroy(fusion->io_request_frames_pool); 561 562 fusion->io_request_frames_pool = 563 dma_pool_create("mr_ioreq_align", 564 &instance->pdev->dev, 565 fusion->io_frames_alloc_sz, 566 roundup_pow_of_two(fusion->io_frames_alloc_sz), 567 0); 568 569 if (!fusion->io_request_frames_pool) { 570 dev_err(&instance->pdev->dev, 571 "Failed from %s %d\n", __func__, __LINE__); 572 return -ENOMEM; 573 } 574 575 fusion->io_request_frames = 576 dma_pool_alloc(fusion->io_request_frames_pool, 577 GFP_KERNEL, 578 &fusion->io_request_frames_phys); 579 580 if (!fusion->io_request_frames) { 581 dev_err(&instance->pdev->dev, 582 "Failed from %s %d\n", __func__, __LINE__); 583 return -ENOMEM; 584 } 585 } 586 587 fusion->req_frames_desc = 588 dma_alloc_coherent(&instance->pdev->dev, 589 fusion->request_alloc_sz, 590 &fusion->req_frames_desc_phys, GFP_KERNEL); 591 if (!fusion->req_frames_desc) { 592 dev_err(&instance->pdev->dev, 593 "Failed from %s %d\n", __func__, __LINE__); 594 return -ENOMEM; 595 } 596 597 return 0; 598 } 599 600 int 601 megasas_alloc_reply_fusion(struct megasas_instance *instance) 602 { 603 int i, count; 604 struct fusion_context *fusion; 605 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 606 fusion = instance->ctrl_context; 607 608 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 609 fusion->reply_frames_desc_pool = 610 dma_pool_create("mr_reply", &instance->pdev->dev, 611 fusion->reply_alloc_sz * count, 16, 0); 612 613 if (!fusion->reply_frames_desc_pool) { 614 dev_err(&instance->pdev->dev, 615 "Failed from %s %d\n", __func__, __LINE__); 616 return -ENOMEM; 617 } 618 619 fusion->reply_frames_desc[0] = 620 dma_pool_alloc(fusion->reply_frames_desc_pool, 621 GFP_KERNEL, &fusion->reply_frames_desc_phys[0]); 622 if (!fusion->reply_frames_desc[0]) { 623 dev_err(&instance->pdev->dev, 624 "Failed from %s %d\n", __func__, __LINE__); 625 return -ENOMEM; 626 } 627 628 if (!megasas_check_same_4gb_region(instance, 629 fusion->reply_frames_desc_phys[0], 630 (fusion->reply_alloc_sz * count))) { 631 dma_pool_free(fusion->reply_frames_desc_pool, 632 fusion->reply_frames_desc[0], 633 fusion->reply_frames_desc_phys[0]); 634 fusion->reply_frames_desc[0] = NULL; 635 dma_pool_destroy(fusion->reply_frames_desc_pool); 636 637 fusion->reply_frames_desc_pool = 638 dma_pool_create("mr_reply_align", 639 &instance->pdev->dev, 640 fusion->reply_alloc_sz * count, 641 roundup_pow_of_two(fusion->reply_alloc_sz * count), 642 0); 643 644 if (!fusion->reply_frames_desc_pool) { 645 dev_err(&instance->pdev->dev, 646 "Failed from %s %d\n", __func__, __LINE__); 647 return -ENOMEM; 648 } 649 650 fusion->reply_frames_desc[0] = 651 dma_pool_alloc(fusion->reply_frames_desc_pool, 652 GFP_KERNEL, 653 &fusion->reply_frames_desc_phys[0]); 654 655 if (!fusion->reply_frames_desc[0]) { 656 dev_err(&instance->pdev->dev, 657 "Failed from %s %d\n", __func__, __LINE__); 658 return -ENOMEM; 659 } 660 } 661 662 reply_desc = fusion->reply_frames_desc[0]; 663 for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++) 664 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 665 666 /* This is not a rdpq mode, but driver still populate 667 * reply_frame_desc array to use same msix index in ISR path. 668 */ 669 for (i = 0; i < (count - 1); i++) 670 fusion->reply_frames_desc[i + 1] = 671 fusion->reply_frames_desc[i] + 672 (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION); 673 674 return 0; 675 } 676 677 int 678 megasas_alloc_rdpq_fusion(struct megasas_instance *instance) 679 { 680 int i, j, k, msix_count; 681 struct fusion_context *fusion; 682 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 683 union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT]; 684 dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT]; 685 u8 dma_alloc_count, abs_index; 686 u32 chunk_size, array_size, offset; 687 688 fusion = instance->ctrl_context; 689 chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK; 690 array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * 691 MAX_MSIX_QUEUES_FUSION; 692 693 fusion->rdpq_virt = pci_alloc_consistent(instance->pdev, array_size, 694 &fusion->rdpq_phys); 695 if (!fusion->rdpq_virt) { 696 dev_err(&instance->pdev->dev, 697 "Failed from %s %d\n", __func__, __LINE__); 698 return -ENOMEM; 699 } 700 701 memset(fusion->rdpq_virt, 0, array_size); 702 msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 703 704 fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq", 705 &instance->pdev->dev, 706 chunk_size, 16, 0); 707 fusion->reply_frames_desc_pool_align = 708 dma_pool_create("mr_rdpq_align", 709 &instance->pdev->dev, 710 chunk_size, 711 roundup_pow_of_two(chunk_size), 712 0); 713 714 if (!fusion->reply_frames_desc_pool || 715 !fusion->reply_frames_desc_pool_align) { 716 dev_err(&instance->pdev->dev, 717 "Failed from %s %d\n", __func__, __LINE__); 718 return -ENOMEM; 719 } 720 721 /* 722 * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and 723 * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be 724 * within 4GB boundary and also reply queues in a set must have same 725 * upper 32-bits in their memory address. so here driver is allocating the 726 * DMA'able memory for reply queues according. Driver uses limitation of 727 * VENTURA_SERIES to manage INVADER_SERIES as well. 728 */ 729 dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK); 730 731 for (i = 0; i < dma_alloc_count; i++) { 732 rdpq_chunk_virt[i] = 733 dma_pool_alloc(fusion->reply_frames_desc_pool, 734 GFP_KERNEL, &rdpq_chunk_phys[i]); 735 if (!rdpq_chunk_virt[i]) { 736 dev_err(&instance->pdev->dev, 737 "Failed from %s %d\n", __func__, __LINE__); 738 return -ENOMEM; 739 } 740 /* reply desc pool requires to be in same 4 gb region. 741 * Below function will check this. 742 * In case of failure, new pci pool will be created with updated 743 * alignment. 744 * For RDPQ buffers, driver always allocate two separate pci pool. 745 * Alignment will be used such a way that next allocation if 746 * success, will always meet same 4gb region requirement. 747 * rdpq_tracker keep track of each buffer's physical, 748 * virtual address and pci pool descriptor. It will help driver 749 * while freeing the resources. 750 * 751 */ 752 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i], 753 chunk_size)) { 754 dma_pool_free(fusion->reply_frames_desc_pool, 755 rdpq_chunk_virt[i], 756 rdpq_chunk_phys[i]); 757 758 rdpq_chunk_virt[i] = 759 dma_pool_alloc(fusion->reply_frames_desc_pool_align, 760 GFP_KERNEL, &rdpq_chunk_phys[i]); 761 if (!rdpq_chunk_virt[i]) { 762 dev_err(&instance->pdev->dev, 763 "Failed from %s %d\n", 764 __func__, __LINE__); 765 return -ENOMEM; 766 } 767 fusion->rdpq_tracker[i].dma_pool_ptr = 768 fusion->reply_frames_desc_pool_align; 769 } else { 770 fusion->rdpq_tracker[i].dma_pool_ptr = 771 fusion->reply_frames_desc_pool; 772 } 773 774 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i]; 775 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i]; 776 } 777 778 for (k = 0; k < dma_alloc_count; k++) { 779 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) { 780 abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i; 781 782 if (abs_index == msix_count) 783 break; 784 offset = fusion->reply_alloc_sz * i; 785 fusion->rdpq_virt[abs_index].RDPQBaseAddress = 786 cpu_to_le64(rdpq_chunk_phys[k] + offset); 787 fusion->reply_frames_desc_phys[abs_index] = 788 rdpq_chunk_phys[k] + offset; 789 fusion->reply_frames_desc[abs_index] = 790 (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset); 791 792 reply_desc = fusion->reply_frames_desc[abs_index]; 793 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++) 794 reply_desc->Words = ULLONG_MAX; 795 } 796 } 797 798 return 0; 799 } 800 801 static void 802 megasas_free_rdpq_fusion(struct megasas_instance *instance) { 803 804 int i; 805 struct fusion_context *fusion; 806 807 fusion = instance->ctrl_context; 808 809 for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) { 810 if (fusion->rdpq_tracker[i].pool_entry_virt) 811 dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr, 812 fusion->rdpq_tracker[i].pool_entry_virt, 813 fusion->rdpq_tracker[i].pool_entry_phys); 814 815 } 816 817 if (fusion->reply_frames_desc_pool) 818 dma_pool_destroy(fusion->reply_frames_desc_pool); 819 if (fusion->reply_frames_desc_pool_align) 820 dma_pool_destroy(fusion->reply_frames_desc_pool_align); 821 822 if (fusion->rdpq_virt) 823 pci_free_consistent(instance->pdev, 824 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION, 825 fusion->rdpq_virt, fusion->rdpq_phys); 826 } 827 828 static void 829 megasas_free_reply_fusion(struct megasas_instance *instance) { 830 831 struct fusion_context *fusion; 832 833 fusion = instance->ctrl_context; 834 835 if (fusion->reply_frames_desc[0]) 836 dma_pool_free(fusion->reply_frames_desc_pool, 837 fusion->reply_frames_desc[0], 838 fusion->reply_frames_desc_phys[0]); 839 840 if (fusion->reply_frames_desc_pool) 841 dma_pool_destroy(fusion->reply_frames_desc_pool); 842 843 } 844 845 846 /** 847 * megasas_alloc_cmds_fusion - Allocates the command packets 848 * @instance: Adapter soft state 849 * 850 * 851 * Each frame has a 32-bit field called context. This context is used to get 852 * back the megasas_cmd_fusion from the frame when a frame gets completed 853 * In this driver, the 32 bit values are the indices into an array cmd_list. 854 * This array is used only to look up the megasas_cmd_fusion given the context. 855 * The free commands themselves are maintained in a linked list called cmd_pool. 856 * 857 * cmds are formed in the io_request and sg_frame members of the 858 * megasas_cmd_fusion. The context field is used to get a request descriptor 859 * and is used as SMID of the cmd. 860 * SMID value range is from 1 to max_fw_cmds. 861 */ 862 int 863 megasas_alloc_cmds_fusion(struct megasas_instance *instance) 864 { 865 int i; 866 struct fusion_context *fusion; 867 struct megasas_cmd_fusion *cmd; 868 u32 offset; 869 dma_addr_t io_req_base_phys; 870 u8 *io_req_base; 871 872 873 fusion = instance->ctrl_context; 874 875 if (megasas_alloc_request_fusion(instance)) 876 goto fail_exit; 877 878 if (instance->is_rdpq) { 879 if (megasas_alloc_rdpq_fusion(instance)) 880 goto fail_exit; 881 } else 882 if (megasas_alloc_reply_fusion(instance)) 883 goto fail_exit; 884 885 if (megasas_alloc_cmdlist_fusion(instance)) 886 goto fail_exit; 887 888 dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n", 889 instance->max_fw_cmds); 890 891 /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */ 892 io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 893 io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE; 894 895 /* 896 * Add all the commands to command pool (fusion->cmd_pool) 897 */ 898 899 /* SMID 0 is reserved. Set SMID/index from 1 */ 900 for (i = 0; i < instance->max_mpt_cmds; i++) { 901 cmd = fusion->cmd_list[i]; 902 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i; 903 memset(cmd, 0, sizeof(struct megasas_cmd_fusion)); 904 cmd->index = i + 1; 905 cmd->scmd = NULL; 906 cmd->sync_cmd_idx = 907 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ? 908 (i - instance->max_scsi_cmds) : 909 (u32)ULONG_MAX; /* Set to Invalid */ 910 cmd->instance = instance; 911 cmd->io_request = 912 (struct MPI2_RAID_SCSI_IO_REQUEST *) 913 (io_req_base + offset); 914 memset(cmd->io_request, 0, 915 sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)); 916 cmd->io_request_phys_addr = io_req_base_phys + offset; 917 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 918 } 919 920 if (megasas_create_sg_sense_fusion(instance)) 921 goto fail_exit; 922 923 return 0; 924 925 fail_exit: 926 megasas_free_cmds_fusion(instance); 927 return -ENOMEM; 928 } 929 930 /** 931 * wait_and_poll - Issues a polling command 932 * @instance: Adapter soft state 933 * @cmd: Command packet to be issued 934 * 935 * For polling, MFI requires the cmd_status to be set to 0xFF before posting. 936 */ 937 int 938 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd, 939 int seconds) 940 { 941 int i; 942 struct megasas_header *frame_hdr = &cmd->frame->hdr; 943 struct fusion_context *fusion; 944 945 u32 msecs = seconds * 1000; 946 947 fusion = instance->ctrl_context; 948 /* 949 * Wait for cmd_status to change 950 */ 951 for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) { 952 rmb(); 953 msleep(20); 954 } 955 956 if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS) 957 return DCMD_TIMEOUT; 958 else if (frame_hdr->cmd_status == MFI_STAT_OK) 959 return DCMD_SUCCESS; 960 else 961 return DCMD_FAILED; 962 } 963 964 /** 965 * megasas_ioc_init_fusion - Initializes the FW 966 * @instance: Adapter soft state 967 * 968 * Issues the IOC Init cmd 969 */ 970 int 971 megasas_ioc_init_fusion(struct megasas_instance *instance) 972 { 973 struct megasas_init_frame *init_frame; 974 struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL; 975 dma_addr_t ioc_init_handle; 976 struct megasas_cmd *cmd; 977 u8 ret, cur_rdpq_mode; 978 struct fusion_context *fusion; 979 union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc; 980 int i; 981 struct megasas_header *frame_hdr; 982 const char *sys_info; 983 MFI_CAPABILITIES *drv_ops; 984 u32 scratch_pad_2; 985 unsigned long flags; 986 struct timeval tv; 987 bool cur_fw_64bit_dma_capable; 988 989 fusion = instance->ctrl_context; 990 991 ioc_init_handle = fusion->ioc_init_request_phys; 992 IOCInitMessage = fusion->ioc_init_request; 993 994 cmd = fusion->ioc_init_cmd; 995 996 scratch_pad_2 = readl 997 (&instance->reg_set->outbound_scratch_pad_2); 998 999 cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0; 1000 1001 if (instance->adapter_type == INVADER_SERIES) { 1002 cur_fw_64bit_dma_capable = 1003 (scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false; 1004 1005 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) { 1006 dev_err(&instance->pdev->dev, "Driver was operating on 64bit " 1007 "DMA mask, but upcoming FW does not support 64bit DMA mask\n"); 1008 megaraid_sas_kill_hba(instance); 1009 ret = 1; 1010 goto fail_fw_init; 1011 } 1012 } 1013 1014 if (instance->is_rdpq && !cur_rdpq_mode) { 1015 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*" 1016 " from RDPQ mode to non RDPQ mode\n"); 1017 ret = 1; 1018 goto fail_fw_init; 1019 } 1020 1021 instance->fw_sync_cache_support = (scratch_pad_2 & 1022 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0; 1023 dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n", 1024 instance->fw_sync_cache_support ? "Yes" : "No"); 1025 1026 memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST)); 1027 1028 IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT; 1029 IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER; 1030 IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION); 1031 IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION); 1032 IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4); 1033 1034 IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth); 1035 IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ? 1036 cpu_to_le64(fusion->rdpq_phys) : 1037 cpu_to_le64(fusion->reply_frames_desc_phys[0]); 1038 IOCInitMessage->MsgFlags = instance->is_rdpq ? 1039 MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0; 1040 IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys); 1041 IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr)); 1042 IOCInitMessage->HostMSIxVectors = instance->msix_vectors; 1043 IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT; 1044 1045 do_gettimeofday(&tv); 1046 /* Convert to milliseconds as per FW requirement */ 1047 IOCInitMessage->TimeStamp = cpu_to_le64((tv.tv_sec * 1000) + 1048 (tv.tv_usec / 1000)); 1049 1050 init_frame = (struct megasas_init_frame *)cmd->frame; 1051 memset(init_frame, 0, MEGAMFI_FRAME_SIZE); 1052 1053 frame_hdr = &cmd->frame->hdr; 1054 frame_hdr->cmd_status = 0xFF; 1055 frame_hdr->flags = cpu_to_le16( 1056 le16_to_cpu(frame_hdr->flags) | 1057 MFI_FRAME_DONT_POST_IN_REPLY_QUEUE); 1058 1059 init_frame->cmd = MFI_CMD_INIT; 1060 init_frame->cmd_status = 0xFF; 1061 1062 drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations); 1063 1064 /* driver support Extended MSIX */ 1065 if (instance->adapter_type >= INVADER_SERIES) 1066 drv_ops->mfi_capabilities.support_additional_msix = 1; 1067 /* driver supports HA / Remote LUN over Fast Path interface */ 1068 drv_ops->mfi_capabilities.support_fp_remote_lun = 1; 1069 1070 drv_ops->mfi_capabilities.support_max_255lds = 1; 1071 drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1; 1072 drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1; 1073 1074 if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN) 1075 drv_ops->mfi_capabilities.support_ext_io_size = 1; 1076 1077 drv_ops->mfi_capabilities.support_fp_rlbypass = 1; 1078 if (!dual_qdepth_disable) 1079 drv_ops->mfi_capabilities.support_ext_queue_depth = 1; 1080 1081 drv_ops->mfi_capabilities.support_qd_throttling = 1; 1082 drv_ops->mfi_capabilities.support_pd_map_target_id = 1; 1083 1084 if (instance->consistent_mask_64bit) 1085 drv_ops->mfi_capabilities.support_64bit_mode = 1; 1086 1087 /* Convert capability to LE32 */ 1088 cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities); 1089 1090 sys_info = dmi_get_system_info(DMI_PRODUCT_UUID); 1091 if (instance->system_info_buf && sys_info) { 1092 memcpy(instance->system_info_buf->systemId, sys_info, 1093 strlen(sys_info) > 64 ? 64 : strlen(sys_info)); 1094 instance->system_info_buf->systemIdLength = 1095 strlen(sys_info) > 64 ? 64 : strlen(sys_info); 1096 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h)); 1097 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h)); 1098 } 1099 1100 init_frame->queue_info_new_phys_addr_hi = 1101 cpu_to_le32(upper_32_bits(ioc_init_handle)); 1102 init_frame->queue_info_new_phys_addr_lo = 1103 cpu_to_le32(lower_32_bits(ioc_init_handle)); 1104 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST)); 1105 1106 req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr)); 1107 req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr)); 1108 req_desc.MFAIo.RequestFlags = 1109 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA << 1110 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 1111 1112 /* 1113 * disable the intr before firing the init frame 1114 */ 1115 instance->instancet->disable_intr(instance); 1116 1117 for (i = 0; i < (10 * 1000); i += 20) { 1118 if (readl(&instance->reg_set->doorbell) & 1) 1119 msleep(20); 1120 else 1121 break; 1122 } 1123 1124 /* For Ventura also IOC INIT required 64 bit Descriptor write. */ 1125 spin_lock_irqsave(&instance->hba_lock, flags); 1126 writel(le32_to_cpu(req_desc.u.low), 1127 &instance->reg_set->inbound_low_queue_port); 1128 writel(le32_to_cpu(req_desc.u.high), 1129 &instance->reg_set->inbound_high_queue_port); 1130 mmiowb(); 1131 spin_unlock_irqrestore(&instance->hba_lock, flags); 1132 1133 wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS); 1134 1135 frame_hdr = &cmd->frame->hdr; 1136 if (frame_hdr->cmd_status != 0) { 1137 ret = 1; 1138 goto fail_fw_init; 1139 } 1140 1141 ret = 0; 1142 1143 fail_fw_init: 1144 dev_err(&instance->pdev->dev, 1145 "Init cmd return status %s for SCSI host %d\n", 1146 ret ? "FAILED" : "SUCCESS", instance->host->host_no); 1147 1148 return ret; 1149 } 1150 1151 /** 1152 * megasas_sync_pd_seq_num - JBOD SEQ MAP 1153 * @instance: Adapter soft state 1154 * @pend: set to 1, if it is pended jbod map. 1155 * 1156 * Issue Jbod map to the firmware. If it is pended command, 1157 * issue command and return. If it is first instance of jbod map 1158 * issue and receive command. 1159 */ 1160 int 1161 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { 1162 int ret = 0; 1163 u32 pd_seq_map_sz; 1164 struct megasas_cmd *cmd; 1165 struct megasas_dcmd_frame *dcmd; 1166 struct fusion_context *fusion = instance->ctrl_context; 1167 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 1168 dma_addr_t pd_seq_h; 1169 1170 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; 1171 pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; 1172 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + 1173 (sizeof(struct MR_PD_CFG_SEQ) * 1174 (MAX_PHYSICAL_DEVICES - 1)); 1175 1176 cmd = megasas_get_cmd(instance); 1177 if (!cmd) { 1178 dev_err(&instance->pdev->dev, 1179 "Could not get mfi cmd. Fail from %s %d\n", 1180 __func__, __LINE__); 1181 return -ENOMEM; 1182 } 1183 1184 dcmd = &cmd->frame->dcmd; 1185 1186 memset(pd_sync, 0, pd_seq_map_sz); 1187 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1188 1189 if (pend) { 1190 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1191 dcmd->flags = MFI_FRAME_DIR_WRITE; 1192 instance->jbod_seq_cmd = cmd; 1193 } else { 1194 dcmd->flags = MFI_FRAME_DIR_READ; 1195 } 1196 1197 dcmd->cmd = MFI_CMD_DCMD; 1198 dcmd->cmd_status = 0xFF; 1199 dcmd->sge_count = 1; 1200 dcmd->timeout = 0; 1201 dcmd->pad_0 = 0; 1202 dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz); 1203 dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO); 1204 1205 megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz); 1206 1207 if (pend) { 1208 instance->instancet->issue_dcmd(instance, cmd); 1209 return 0; 1210 } 1211 1212 /* Below code is only for non pended DCMD */ 1213 if (!instance->mask_interrupts) 1214 ret = megasas_issue_blocked_cmd(instance, cmd, 1215 MFI_IO_TIMEOUT_SECS); 1216 else 1217 ret = megasas_issue_polled(instance, cmd); 1218 1219 if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) { 1220 dev_warn(&instance->pdev->dev, 1221 "driver supports max %d JBOD, but FW reports %d\n", 1222 MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count)); 1223 ret = -EINVAL; 1224 } 1225 1226 if (ret == DCMD_TIMEOUT) 1227 megaraid_sas_kill_hba(instance); 1228 1229 if (ret == DCMD_SUCCESS) 1230 instance->pd_seq_map_id++; 1231 1232 megasas_return_cmd(instance, cmd); 1233 return ret; 1234 } 1235 1236 /* 1237 * megasas_get_ld_map_info - Returns FW's ld_map structure 1238 * @instance: Adapter soft state 1239 * @pend: Pend the command or not 1240 * Issues an internal command (DCMD) to get the FW's controller PD 1241 * list structure. This information is mainly used to find out SYSTEM 1242 * supported by the FW. 1243 * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO 1244 * dcmd.mbox.b[0] - number of LDs being sync'd 1245 * dcmd.mbox.b[1] - 0 - complete command immediately. 1246 * - 1 - pend till config change 1247 * dcmd.mbox.b[2] - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP 1248 * - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and 1249 * uses extended struct MR_FW_RAID_MAP_EXT 1250 */ 1251 static int 1252 megasas_get_ld_map_info(struct megasas_instance *instance) 1253 { 1254 int ret = 0; 1255 struct megasas_cmd *cmd; 1256 struct megasas_dcmd_frame *dcmd; 1257 void *ci; 1258 dma_addr_t ci_h = 0; 1259 u32 size_map_info; 1260 struct fusion_context *fusion; 1261 1262 cmd = megasas_get_cmd(instance); 1263 1264 if (!cmd) { 1265 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n"); 1266 return -ENOMEM; 1267 } 1268 1269 fusion = instance->ctrl_context; 1270 1271 if (!fusion) { 1272 megasas_return_cmd(instance, cmd); 1273 return -ENXIO; 1274 } 1275 1276 dcmd = &cmd->frame->dcmd; 1277 1278 size_map_info = fusion->current_map_sz; 1279 1280 ci = (void *) fusion->ld_map[(instance->map_id & 1)]; 1281 ci_h = fusion->ld_map_phys[(instance->map_id & 1)]; 1282 1283 if (!ci) { 1284 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n"); 1285 megasas_return_cmd(instance, cmd); 1286 return -ENOMEM; 1287 } 1288 1289 memset(ci, 0, fusion->max_map_sz); 1290 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1291 dcmd->cmd = MFI_CMD_DCMD; 1292 dcmd->cmd_status = 0xFF; 1293 dcmd->sge_count = 1; 1294 dcmd->flags = MFI_FRAME_DIR_READ; 1295 dcmd->timeout = 0; 1296 dcmd->pad_0 = 0; 1297 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1298 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1299 1300 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1301 1302 if (!instance->mask_interrupts) 1303 ret = megasas_issue_blocked_cmd(instance, cmd, 1304 MFI_IO_TIMEOUT_SECS); 1305 else 1306 ret = megasas_issue_polled(instance, cmd); 1307 1308 if (ret == DCMD_TIMEOUT) 1309 megaraid_sas_kill_hba(instance); 1310 1311 megasas_return_cmd(instance, cmd); 1312 1313 return ret; 1314 } 1315 1316 u8 1317 megasas_get_map_info(struct megasas_instance *instance) 1318 { 1319 struct fusion_context *fusion = instance->ctrl_context; 1320 1321 fusion->fast_path_io = 0; 1322 if (!megasas_get_ld_map_info(instance)) { 1323 if (MR_ValidateMapInfo(instance)) { 1324 fusion->fast_path_io = 1; 1325 return 0; 1326 } 1327 } 1328 return 1; 1329 } 1330 1331 /* 1332 * megasas_sync_map_info - Returns FW's ld_map structure 1333 * @instance: Adapter soft state 1334 * 1335 * Issues an internal command (DCMD) to get the FW's controller PD 1336 * list structure. This information is mainly used to find out SYSTEM 1337 * supported by the FW. 1338 */ 1339 int 1340 megasas_sync_map_info(struct megasas_instance *instance) 1341 { 1342 int i; 1343 struct megasas_cmd *cmd; 1344 struct megasas_dcmd_frame *dcmd; 1345 u16 num_lds; 1346 u32 size_sync_info; 1347 struct fusion_context *fusion; 1348 struct MR_LD_TARGET_SYNC *ci = NULL; 1349 struct MR_DRV_RAID_MAP_ALL *map; 1350 struct MR_LD_RAID *raid; 1351 struct MR_LD_TARGET_SYNC *ld_sync; 1352 dma_addr_t ci_h = 0; 1353 u32 size_map_info; 1354 1355 cmd = megasas_get_cmd(instance); 1356 1357 if (!cmd) { 1358 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n"); 1359 return -ENOMEM; 1360 } 1361 1362 fusion = instance->ctrl_context; 1363 1364 if (!fusion) { 1365 megasas_return_cmd(instance, cmd); 1366 return 1; 1367 } 1368 1369 map = fusion->ld_drv_map[instance->map_id & 1]; 1370 1371 num_lds = le16_to_cpu(map->raidMap.ldCount); 1372 1373 dcmd = &cmd->frame->dcmd; 1374 1375 size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds; 1376 1377 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE); 1378 1379 ci = (struct MR_LD_TARGET_SYNC *) 1380 fusion->ld_map[(instance->map_id - 1) & 1]; 1381 memset(ci, 0, fusion->max_map_sz); 1382 1383 ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1]; 1384 1385 ld_sync = (struct MR_LD_TARGET_SYNC *)ci; 1386 1387 for (i = 0; i < num_lds; i++, ld_sync++) { 1388 raid = MR_LdRaidGet(i, map); 1389 ld_sync->targetId = MR_GetLDTgtId(i, map); 1390 ld_sync->seqNum = raid->seqNum; 1391 } 1392 1393 size_map_info = fusion->current_map_sz; 1394 1395 dcmd->cmd = MFI_CMD_DCMD; 1396 dcmd->cmd_status = 0xFF; 1397 dcmd->sge_count = 1; 1398 dcmd->flags = MFI_FRAME_DIR_WRITE; 1399 dcmd->timeout = 0; 1400 dcmd->pad_0 = 0; 1401 dcmd->data_xfer_len = cpu_to_le32(size_map_info); 1402 dcmd->mbox.b[0] = num_lds; 1403 dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG; 1404 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO); 1405 1406 megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info); 1407 1408 instance->map_update_cmd = cmd; 1409 1410 instance->instancet->issue_dcmd(instance, cmd); 1411 1412 return 0; 1413 } 1414 1415 /* 1416 * meagasas_display_intel_branding - Display branding string 1417 * @instance: per adapter object 1418 * 1419 * Return nothing. 1420 */ 1421 static void 1422 megasas_display_intel_branding(struct megasas_instance *instance) 1423 { 1424 if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL) 1425 return; 1426 1427 switch (instance->pdev->device) { 1428 case PCI_DEVICE_ID_LSI_INVADER: 1429 switch (instance->pdev->subsystem_device) { 1430 case MEGARAID_INTEL_RS3DC080_SSDID: 1431 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1432 instance->host->host_no, 1433 MEGARAID_INTEL_RS3DC080_BRANDING); 1434 break; 1435 case MEGARAID_INTEL_RS3DC040_SSDID: 1436 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1437 instance->host->host_no, 1438 MEGARAID_INTEL_RS3DC040_BRANDING); 1439 break; 1440 case MEGARAID_INTEL_RS3SC008_SSDID: 1441 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1442 instance->host->host_no, 1443 MEGARAID_INTEL_RS3SC008_BRANDING); 1444 break; 1445 case MEGARAID_INTEL_RS3MC044_SSDID: 1446 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1447 instance->host->host_no, 1448 MEGARAID_INTEL_RS3MC044_BRANDING); 1449 break; 1450 default: 1451 break; 1452 } 1453 break; 1454 case PCI_DEVICE_ID_LSI_FURY: 1455 switch (instance->pdev->subsystem_device) { 1456 case MEGARAID_INTEL_RS3WC080_SSDID: 1457 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1458 instance->host->host_no, 1459 MEGARAID_INTEL_RS3WC080_BRANDING); 1460 break; 1461 case MEGARAID_INTEL_RS3WC040_SSDID: 1462 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1463 instance->host->host_no, 1464 MEGARAID_INTEL_RS3WC040_BRANDING); 1465 break; 1466 default: 1467 break; 1468 } 1469 break; 1470 case PCI_DEVICE_ID_LSI_CUTLASS_52: 1471 case PCI_DEVICE_ID_LSI_CUTLASS_53: 1472 switch (instance->pdev->subsystem_device) { 1473 case MEGARAID_INTEL_RMS3BC160_SSDID: 1474 dev_info(&instance->pdev->dev, "scsi host %d: %s\n", 1475 instance->host->host_no, 1476 MEGARAID_INTEL_RMS3BC160_BRANDING); 1477 break; 1478 default: 1479 break; 1480 } 1481 break; 1482 default: 1483 break; 1484 } 1485 } 1486 1487 /** 1488 * megasas_allocate_raid_maps - Allocate memory for RAID maps 1489 * @instance: Adapter soft state 1490 * 1491 * return: if success: return 0 1492 * failed: return -ENOMEM 1493 */ 1494 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance) 1495 { 1496 struct fusion_context *fusion; 1497 int i = 0; 1498 1499 fusion = instance->ctrl_context; 1500 1501 fusion->drv_map_pages = get_order(fusion->drv_map_sz); 1502 1503 for (i = 0; i < 2; i++) { 1504 fusion->ld_map[i] = NULL; 1505 1506 fusion->ld_drv_map[i] = (void *) 1507 __get_free_pages(__GFP_ZERO | GFP_KERNEL, 1508 fusion->drv_map_pages); 1509 1510 if (!fusion->ld_drv_map[i]) { 1511 fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz); 1512 1513 if (!fusion->ld_drv_map[i]) { 1514 dev_err(&instance->pdev->dev, 1515 "Could not allocate memory for local map" 1516 " size requested: %d\n", 1517 fusion->drv_map_sz); 1518 goto ld_drv_map_alloc_fail; 1519 } 1520 } 1521 } 1522 1523 for (i = 0; i < 2; i++) { 1524 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev, 1525 fusion->max_map_sz, 1526 &fusion->ld_map_phys[i], 1527 GFP_KERNEL); 1528 if (!fusion->ld_map[i]) { 1529 dev_err(&instance->pdev->dev, 1530 "Could not allocate memory for map info %s:%d\n", 1531 __func__, __LINE__); 1532 goto ld_map_alloc_fail; 1533 } 1534 } 1535 1536 return 0; 1537 1538 ld_map_alloc_fail: 1539 for (i = 0; i < 2; i++) { 1540 if (fusion->ld_map[i]) 1541 dma_free_coherent(&instance->pdev->dev, 1542 fusion->max_map_sz, 1543 fusion->ld_map[i], 1544 fusion->ld_map_phys[i]); 1545 } 1546 1547 ld_drv_map_alloc_fail: 1548 for (i = 0; i < 2; i++) { 1549 if (fusion->ld_drv_map[i]) { 1550 if (is_vmalloc_addr(fusion->ld_drv_map[i])) 1551 vfree(fusion->ld_drv_map[i]); 1552 else 1553 free_pages((ulong)fusion->ld_drv_map[i], 1554 fusion->drv_map_pages); 1555 } 1556 } 1557 1558 return -ENOMEM; 1559 } 1560 1561 /** 1562 * megasas_configure_queue_sizes - Calculate size of request desc queue, 1563 * reply desc queue, 1564 * IO request frame queue, set can_queue. 1565 * @instance: Adapter soft state 1566 * @return: void 1567 */ 1568 static inline 1569 void megasas_configure_queue_sizes(struct megasas_instance *instance) 1570 { 1571 struct fusion_context *fusion; 1572 u16 max_cmd; 1573 1574 fusion = instance->ctrl_context; 1575 max_cmd = instance->max_fw_cmds; 1576 1577 if (instance->adapter_type == VENTURA_SERIES) 1578 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS; 1579 else 1580 instance->max_mpt_cmds = instance->max_fw_cmds; 1581 1582 instance->max_scsi_cmds = instance->max_fw_cmds - 1583 (MEGASAS_FUSION_INTERNAL_CMDS + 1584 MEGASAS_FUSION_IOCTL_CMDS); 1585 instance->cur_can_queue = instance->max_scsi_cmds; 1586 instance->host->can_queue = instance->cur_can_queue; 1587 1588 fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16; 1589 1590 fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * 1591 instance->max_mpt_cmds; 1592 fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) * 1593 (fusion->reply_q_depth); 1594 fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE + 1595 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1596 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */ 1597 } 1598 1599 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance) 1600 { 1601 struct fusion_context *fusion; 1602 struct megasas_cmd *cmd; 1603 1604 fusion = instance->ctrl_context; 1605 1606 cmd = kmalloc(sizeof(struct megasas_cmd), GFP_KERNEL); 1607 1608 if (!cmd) { 1609 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1610 __func__, __LINE__); 1611 return -ENOMEM; 1612 } 1613 1614 cmd->frame = dma_alloc_coherent(&instance->pdev->dev, 1615 IOC_INIT_FRAME_SIZE, 1616 &cmd->frame_phys_addr, GFP_KERNEL); 1617 1618 if (!cmd->frame) { 1619 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n", 1620 __func__, __LINE__); 1621 kfree(cmd); 1622 return -ENOMEM; 1623 } 1624 1625 fusion->ioc_init_cmd = cmd; 1626 return 0; 1627 } 1628 1629 /** 1630 * megasas_free_ioc_init_cmd - Free IOC INIT command frame 1631 * @instance: Adapter soft state 1632 */ 1633 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance) 1634 { 1635 struct fusion_context *fusion; 1636 1637 fusion = instance->ctrl_context; 1638 1639 if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame) 1640 dma_free_coherent(&instance->pdev->dev, 1641 IOC_INIT_FRAME_SIZE, 1642 fusion->ioc_init_cmd->frame, 1643 fusion->ioc_init_cmd->frame_phys_addr); 1644 1645 if (fusion->ioc_init_cmd) 1646 kfree(fusion->ioc_init_cmd); 1647 } 1648 1649 /** 1650 * megasas_init_adapter_fusion - Initializes the FW 1651 * @instance: Adapter soft state 1652 * 1653 * This is the main function for initializing firmware. 1654 */ 1655 u32 1656 megasas_init_adapter_fusion(struct megasas_instance *instance) 1657 { 1658 struct megasas_register_set __iomem *reg_set; 1659 struct fusion_context *fusion; 1660 u32 scratch_pad_2; 1661 int i = 0, count; 1662 1663 fusion = instance->ctrl_context; 1664 1665 reg_set = instance->reg_set; 1666 1667 megasas_fusion_update_can_queue(instance, PROBE_CONTEXT); 1668 1669 /* 1670 * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames 1671 */ 1672 instance->max_mfi_cmds = 1673 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS; 1674 1675 megasas_configure_queue_sizes(instance); 1676 1677 scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2); 1678 /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set, 1679 * Firmware support extended IO chain frame which is 4 times more than 1680 * legacy Firmware. 1681 * Legacy Firmware - Frame size is (8 * 128) = 1K 1682 * 1M IO Firmware - Frame size is (8 * 128 * 4) = 4K 1683 */ 1684 if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK) 1685 instance->max_chain_frame_sz = 1686 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1687 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO; 1688 else 1689 instance->max_chain_frame_sz = 1690 ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >> 1691 MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO; 1692 1693 if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) { 1694 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n", 1695 instance->max_chain_frame_sz, 1696 MEGASAS_CHAIN_FRAME_SZ_MIN); 1697 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN; 1698 } 1699 1700 fusion->max_sge_in_main_msg = 1701 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 1702 - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16; 1703 1704 fusion->max_sge_in_chain = 1705 instance->max_chain_frame_sz 1706 / sizeof(union MPI2_SGE_IO_UNION); 1707 1708 instance->max_num_sge = 1709 rounddown_pow_of_two(fusion->max_sge_in_main_msg 1710 + fusion->max_sge_in_chain - 2); 1711 1712 /* Used for pass thru MFI frame (DCMD) */ 1713 fusion->chain_offset_mfi_pthru = 1714 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16; 1715 1716 fusion->chain_offset_io_request = 1717 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE - 1718 sizeof(union MPI2_SGE_IO_UNION))/16; 1719 1720 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 1721 for (i = 0 ; i < count; i++) 1722 fusion->last_reply_idx[i] = 0; 1723 1724 /* 1725 * For fusion adapters, 3 commands for IOCTL and 8 commands 1726 * for driver's internal DCMDs. 1727 */ 1728 instance->max_scsi_cmds = instance->max_fw_cmds - 1729 (MEGASAS_FUSION_INTERNAL_CMDS + 1730 MEGASAS_FUSION_IOCTL_CMDS); 1731 sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS); 1732 1733 if (megasas_alloc_ioc_init_frame(instance)) 1734 return 1; 1735 1736 /* 1737 * Allocate memory for descriptors 1738 * Create a pool of commands 1739 */ 1740 if (megasas_alloc_cmds(instance)) 1741 goto fail_alloc_mfi_cmds; 1742 if (megasas_alloc_cmds_fusion(instance)) 1743 goto fail_alloc_cmds; 1744 1745 if (megasas_ioc_init_fusion(instance)) 1746 goto fail_ioc_init; 1747 1748 megasas_display_intel_branding(instance); 1749 if (megasas_get_ctrl_info(instance)) { 1750 dev_err(&instance->pdev->dev, 1751 "Could not get controller info. Fail from %s %d\n", 1752 __func__, __LINE__); 1753 goto fail_ioc_init; 1754 } 1755 1756 instance->flag_ieee = 1; 1757 instance->r1_ldio_hint_default = MR_R1_LDIO_PIGGYBACK_DEFAULT; 1758 fusion->fast_path_io = 0; 1759 1760 if (megasas_allocate_raid_maps(instance)) 1761 goto fail_ioc_init; 1762 1763 if (!megasas_get_map_info(instance)) 1764 megasas_sync_map_info(instance); 1765 1766 return 0; 1767 1768 fail_ioc_init: 1769 megasas_free_cmds_fusion(instance); 1770 fail_alloc_cmds: 1771 megasas_free_cmds(instance); 1772 fail_alloc_mfi_cmds: 1773 megasas_free_ioc_init_cmd(instance); 1774 return 1; 1775 } 1776 1777 /** 1778 * map_cmd_status - Maps FW cmd status to OS cmd status 1779 * @cmd : Pointer to cmd 1780 * @status : status of cmd returned by FW 1781 * @ext_status : ext status of cmd returned by FW 1782 */ 1783 1784 void 1785 map_cmd_status(struct fusion_context *fusion, 1786 struct scsi_cmnd *scmd, u8 status, u8 ext_status, 1787 u32 data_length, u8 *sense) 1788 { 1789 u8 cmd_type; 1790 int resid; 1791 1792 cmd_type = megasas_cmd_type(scmd); 1793 switch (status) { 1794 1795 case MFI_STAT_OK: 1796 scmd->result = DID_OK << 16; 1797 break; 1798 1799 case MFI_STAT_SCSI_IO_FAILED: 1800 case MFI_STAT_LD_INIT_IN_PROGRESS: 1801 scmd->result = (DID_ERROR << 16) | ext_status; 1802 break; 1803 1804 case MFI_STAT_SCSI_DONE_WITH_ERROR: 1805 1806 scmd->result = (DID_OK << 16) | ext_status; 1807 if (ext_status == SAM_STAT_CHECK_CONDITION) { 1808 memset(scmd->sense_buffer, 0, 1809 SCSI_SENSE_BUFFERSIZE); 1810 memcpy(scmd->sense_buffer, sense, 1811 SCSI_SENSE_BUFFERSIZE); 1812 scmd->result |= DRIVER_SENSE << 24; 1813 } 1814 1815 /* 1816 * If the IO request is partially completed, then MR FW will 1817 * update "io_request->DataLength" field with actual number of 1818 * bytes transferred.Driver will set residual bytes count in 1819 * SCSI command structure. 1820 */ 1821 resid = (scsi_bufflen(scmd) - data_length); 1822 scsi_set_resid(scmd, resid); 1823 1824 if (resid && 1825 ((cmd_type == READ_WRITE_LDIO) || 1826 (cmd_type == READ_WRITE_SYSPDIO))) 1827 scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len" 1828 " requested/completed 0x%x/0x%x\n", 1829 status, scsi_bufflen(scmd), data_length); 1830 break; 1831 1832 case MFI_STAT_LD_OFFLINE: 1833 case MFI_STAT_DEVICE_NOT_FOUND: 1834 scmd->result = DID_BAD_TARGET << 16; 1835 break; 1836 case MFI_STAT_CONFIG_SEQ_MISMATCH: 1837 scmd->result = DID_IMM_RETRY << 16; 1838 break; 1839 default: 1840 scmd->result = DID_ERROR << 16; 1841 break; 1842 } 1843 } 1844 1845 /** 1846 * megasas_is_prp_possible - 1847 * Checks if native NVMe PRPs can be built for the IO 1848 * 1849 * @instance: Adapter soft state 1850 * @scmd: SCSI command from the mid-layer 1851 * @sge_count: scatter gather element count. 1852 * 1853 * Returns: true: PRPs can be built 1854 * false: IEEE SGLs needs to be built 1855 */ 1856 static bool 1857 megasas_is_prp_possible(struct megasas_instance *instance, 1858 struct scsi_cmnd *scmd, int sge_count) 1859 { 1860 struct fusion_context *fusion; 1861 int i; 1862 u32 data_length = 0; 1863 struct scatterlist *sg_scmd; 1864 bool build_prp = false; 1865 u32 mr_nvme_pg_size; 1866 1867 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1868 MR_DEFAULT_NVME_PAGE_SIZE); 1869 fusion = instance->ctrl_context; 1870 data_length = scsi_bufflen(scmd); 1871 sg_scmd = scsi_sglist(scmd); 1872 1873 /* 1874 * NVMe uses one PRP for each page (or part of a page) 1875 * look at the data length - if 4 pages or less then IEEE is OK 1876 * if > 5 pages then we need to build a native SGL 1877 * if > 4 and <= 5 pages, then check physical address of 1st SG entry 1878 * if this first size in the page is >= the residual beyond 4 pages 1879 * then use IEEE, otherwise use native SGL 1880 */ 1881 1882 if (data_length > (mr_nvme_pg_size * 5)) { 1883 build_prp = true; 1884 } else if ((data_length > (mr_nvme_pg_size * 4)) && 1885 (data_length <= (mr_nvme_pg_size * 5))) { 1886 /* check if 1st SG entry size is < residual beyond 4 pages */ 1887 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4))) 1888 build_prp = true; 1889 } 1890 1891 /* 1892 * Below code detects gaps/holes in IO data buffers. 1893 * What does holes/gaps mean? 1894 * Any SGE except first one in a SGL starts at non NVME page size 1895 * aligned address OR Any SGE except last one in a SGL ends at 1896 * non NVME page size boundary. 1897 * 1898 * Driver has already informed block layer by setting boundary rules for 1899 * bio merging done at NVME page size boundary calling kernel API 1900 * blk_queue_virt_boundary inside slave_config. 1901 * Still there is possibility of IO coming with holes to driver because of 1902 * IO merging done by IO scheduler. 1903 * 1904 * With SCSI BLK MQ enabled, there will be no IO with holes as there is no 1905 * IO scheduling so no IO merging. 1906 * 1907 * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and 1908 * then sending IOs with holes. 1909 * 1910 * Though driver can request block layer to disable IO merging by calling- 1911 * queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, sdev->request_queue) but 1912 * user may tune sysfs parameter- nomerges again to 0 or 1. 1913 * 1914 * If in future IO scheduling is enabled with SCSI BLK MQ, 1915 * this algorithm to detect holes will be required in driver 1916 * for SCSI BLK MQ enabled case as well. 1917 * 1918 * 1919 */ 1920 scsi_for_each_sg(scmd, sg_scmd, sge_count, i) { 1921 if ((i != 0) && (i != (sge_count - 1))) { 1922 if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) || 1923 mega_mod64(sg_dma_address(sg_scmd), 1924 mr_nvme_pg_size)) { 1925 build_prp = false; 1926 atomic_inc(&instance->sge_holes_type1); 1927 break; 1928 } 1929 } 1930 1931 if ((sge_count > 1) && (i == 0)) { 1932 if ((mega_mod64((sg_dma_address(sg_scmd) + 1933 sg_dma_len(sg_scmd)), 1934 mr_nvme_pg_size))) { 1935 build_prp = false; 1936 atomic_inc(&instance->sge_holes_type2); 1937 break; 1938 } 1939 } 1940 1941 if ((sge_count > 1) && (i == (sge_count - 1))) { 1942 if (mega_mod64(sg_dma_address(sg_scmd), 1943 mr_nvme_pg_size)) { 1944 build_prp = false; 1945 atomic_inc(&instance->sge_holes_type3); 1946 break; 1947 } 1948 } 1949 } 1950 1951 return build_prp; 1952 } 1953 1954 /** 1955 * megasas_make_prp_nvme - 1956 * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only 1957 * 1958 * @instance: Adapter soft state 1959 * @scmd: SCSI command from the mid-layer 1960 * @sgl_ptr: SGL to be filled in 1961 * @cmd: Fusion command frame 1962 * @sge_count: scatter gather element count. 1963 * 1964 * Returns: true: PRPs are built 1965 * false: IEEE SGLs needs to be built 1966 */ 1967 static bool 1968 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd, 1969 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 1970 struct megasas_cmd_fusion *cmd, int sge_count) 1971 { 1972 int sge_len, offset, num_prp_in_chain = 0; 1973 struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl; 1974 u64 *ptr_sgl; 1975 dma_addr_t ptr_sgl_phys; 1976 u64 sge_addr; 1977 u32 page_mask, page_mask_result; 1978 struct scatterlist *sg_scmd; 1979 u32 first_prp_len; 1980 bool build_prp = false; 1981 int data_len = scsi_bufflen(scmd); 1982 struct fusion_context *fusion; 1983 u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size, 1984 MR_DEFAULT_NVME_PAGE_SIZE); 1985 1986 fusion = instance->ctrl_context; 1987 1988 build_prp = megasas_is_prp_possible(instance, scmd, sge_count); 1989 1990 if (!build_prp) 1991 return false; 1992 1993 /* 1994 * Nvme has a very convoluted prp format. One prp is required 1995 * for each page or partial page. Driver need to split up OS sg_list 1996 * entries if it is longer than one page or cross a page 1997 * boundary. Driver also have to insert a PRP list pointer entry as 1998 * the last entry in each physical page of the PRP list. 1999 * 2000 * NOTE: The first PRP "entry" is actually placed in the first 2001 * SGL entry in the main message as IEEE 64 format. The 2nd 2002 * entry in the main message is the chain element, and the rest 2003 * of the PRP entries are built in the contiguous pcie buffer. 2004 */ 2005 page_mask = mr_nvme_pg_size - 1; 2006 ptr_sgl = (u64 *)cmd->sg_frame; 2007 ptr_sgl_phys = cmd->sg_frame_phys_addr; 2008 memset(ptr_sgl, 0, instance->max_chain_frame_sz); 2009 2010 /* Build chain frame element which holds all prps except first*/ 2011 main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *) 2012 ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64)); 2013 2014 main_chain_element->Address = cpu_to_le64(ptr_sgl_phys); 2015 main_chain_element->NextChainOffset = 0; 2016 main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2017 IEEE_SGE_FLAGS_SYSTEM_ADDR | 2018 MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP; 2019 2020 /* Build first prp, sge need not to be page aligned*/ 2021 ptr_first_sgl = sgl_ptr; 2022 sg_scmd = scsi_sglist(scmd); 2023 sge_addr = sg_dma_address(sg_scmd); 2024 sge_len = sg_dma_len(sg_scmd); 2025 2026 offset = (u32)(sge_addr & page_mask); 2027 first_prp_len = mr_nvme_pg_size - offset; 2028 2029 ptr_first_sgl->Address = cpu_to_le64(sge_addr); 2030 ptr_first_sgl->Length = cpu_to_le32(first_prp_len); 2031 2032 data_len -= first_prp_len; 2033 2034 if (sge_len > first_prp_len) { 2035 sge_addr += first_prp_len; 2036 sge_len -= first_prp_len; 2037 } else if (sge_len == first_prp_len) { 2038 sg_scmd = sg_next(sg_scmd); 2039 sge_addr = sg_dma_address(sg_scmd); 2040 sge_len = sg_dma_len(sg_scmd); 2041 } 2042 2043 for (;;) { 2044 offset = (u32)(sge_addr & page_mask); 2045 2046 /* Put PRP pointer due to page boundary*/ 2047 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask; 2048 if (unlikely(!page_mask_result)) { 2049 scmd_printk(KERN_NOTICE, 2050 scmd, "page boundary ptr_sgl: 0x%p\n", 2051 ptr_sgl); 2052 ptr_sgl_phys += 8; 2053 *ptr_sgl = cpu_to_le64(ptr_sgl_phys); 2054 ptr_sgl++; 2055 num_prp_in_chain++; 2056 } 2057 2058 *ptr_sgl = cpu_to_le64(sge_addr); 2059 ptr_sgl++; 2060 ptr_sgl_phys += 8; 2061 num_prp_in_chain++; 2062 2063 sge_addr += mr_nvme_pg_size; 2064 sge_len -= mr_nvme_pg_size; 2065 data_len -= mr_nvme_pg_size; 2066 2067 if (data_len <= 0) 2068 break; 2069 2070 if (sge_len > 0) 2071 continue; 2072 2073 sg_scmd = sg_next(sg_scmd); 2074 sge_addr = sg_dma_address(sg_scmd); 2075 sge_len = sg_dma_len(sg_scmd); 2076 } 2077 2078 main_chain_element->Length = 2079 cpu_to_le32(num_prp_in_chain * sizeof(u64)); 2080 2081 atomic_inc(&instance->prp_sgl); 2082 return build_prp; 2083 } 2084 2085 /** 2086 * megasas_make_sgl_fusion - Prepares 32-bit SGL 2087 * @instance: Adapter soft state 2088 * @scp: SCSI command from the mid-layer 2089 * @sgl_ptr: SGL to be filled in 2090 * @cmd: cmd we are working on 2091 * @sge_count sge count 2092 * 2093 */ 2094 static void 2095 megasas_make_sgl_fusion(struct megasas_instance *instance, 2096 struct scsi_cmnd *scp, 2097 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr, 2098 struct megasas_cmd_fusion *cmd, int sge_count) 2099 { 2100 int i, sg_processed; 2101 struct scatterlist *os_sgl; 2102 struct fusion_context *fusion; 2103 2104 fusion = instance->ctrl_context; 2105 2106 if (instance->adapter_type >= INVADER_SERIES) { 2107 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr; 2108 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 2109 sgl_ptr_end->Flags = 0; 2110 } 2111 2112 scsi_for_each_sg(scp, os_sgl, sge_count, i) { 2113 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl)); 2114 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl)); 2115 sgl_ptr->Flags = 0; 2116 if (instance->adapter_type >= INVADER_SERIES) 2117 if (i == sge_count - 1) 2118 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST; 2119 sgl_ptr++; 2120 sg_processed = i + 1; 2121 2122 if ((sg_processed == (fusion->max_sge_in_main_msg - 1)) && 2123 (sge_count > fusion->max_sge_in_main_msg)) { 2124 2125 struct MPI25_IEEE_SGE_CHAIN64 *sg_chain; 2126 if (instance->adapter_type >= INVADER_SERIES) { 2127 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2128 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) != 2129 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) 2130 cmd->io_request->ChainOffset = 2131 fusion-> 2132 chain_offset_io_request; 2133 else 2134 cmd->io_request->ChainOffset = 0; 2135 } else 2136 cmd->io_request->ChainOffset = 2137 fusion->chain_offset_io_request; 2138 2139 sg_chain = sgl_ptr; 2140 /* Prepare chain element */ 2141 sg_chain->NextChainOffset = 0; 2142 if (instance->adapter_type >= INVADER_SERIES) 2143 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT; 2144 else 2145 sg_chain->Flags = 2146 (IEEE_SGE_FLAGS_CHAIN_ELEMENT | 2147 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR); 2148 sg_chain->Length = cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed))); 2149 sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr); 2150 2151 sgl_ptr = 2152 (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame; 2153 memset(sgl_ptr, 0, instance->max_chain_frame_sz); 2154 } 2155 } 2156 atomic_inc(&instance->ieee_sgl); 2157 } 2158 2159 /** 2160 * megasas_make_sgl - Build Scatter Gather List(SGLs) 2161 * @scp: SCSI command pointer 2162 * @instance: Soft instance of controller 2163 * @cmd: Fusion command pointer 2164 * 2165 * This function will build sgls based on device type. 2166 * For nvme drives, there is different way of building sgls in nvme native 2167 * format- PRPs(Physical Region Page). 2168 * 2169 * Returns the number of sg lists actually used, zero if the sg lists 2170 * is NULL, or -ENOMEM if the mapping failed 2171 */ 2172 static 2173 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp, 2174 struct megasas_cmd_fusion *cmd) 2175 { 2176 int sge_count; 2177 bool build_prp = false; 2178 struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64; 2179 2180 sge_count = scsi_dma_map(scp); 2181 2182 if ((sge_count > instance->max_num_sge) || (sge_count <= 0)) 2183 return sge_count; 2184 2185 sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL; 2186 if ((le16_to_cpu(cmd->io_request->IoFlags) & 2187 MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) && 2188 (cmd->pd_interface == NVME_PD)) 2189 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64, 2190 cmd, sge_count); 2191 2192 if (!build_prp) 2193 megasas_make_sgl_fusion(instance, scp, sgl_chain64, 2194 cmd, sge_count); 2195 2196 return sge_count; 2197 } 2198 2199 /** 2200 * megasas_set_pd_lba - Sets PD LBA 2201 * @cdb: CDB 2202 * @cdb_len: cdb length 2203 * @start_blk: Start block of IO 2204 * 2205 * Used to set the PD LBA in CDB for FP IOs 2206 */ 2207 void 2208 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len, 2209 struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp, 2210 struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag) 2211 { 2212 struct MR_LD_RAID *raid; 2213 u16 ld; 2214 u64 start_blk = io_info->pdBlock; 2215 u8 *cdb = io_request->CDB.CDB32; 2216 u32 num_blocks = io_info->numBlocks; 2217 u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0; 2218 2219 /* Check if T10 PI (DIF) is enabled for this LD */ 2220 ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr); 2221 raid = MR_LdRaidGet(ld, local_map_ptr); 2222 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) { 2223 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2224 cdb[0] = MEGASAS_SCSI_VARIABLE_LENGTH_CMD; 2225 cdb[7] = MEGASAS_SCSI_ADDL_CDB_LEN; 2226 2227 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 2228 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32; 2229 else 2230 cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32; 2231 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL; 2232 2233 /* LBA */ 2234 cdb[12] = (u8)((start_blk >> 56) & 0xff); 2235 cdb[13] = (u8)((start_blk >> 48) & 0xff); 2236 cdb[14] = (u8)((start_blk >> 40) & 0xff); 2237 cdb[15] = (u8)((start_blk >> 32) & 0xff); 2238 cdb[16] = (u8)((start_blk >> 24) & 0xff); 2239 cdb[17] = (u8)((start_blk >> 16) & 0xff); 2240 cdb[18] = (u8)((start_blk >> 8) & 0xff); 2241 cdb[19] = (u8)(start_blk & 0xff); 2242 2243 /* Logical block reference tag */ 2244 io_request->CDB.EEDP32.PrimaryReferenceTag = 2245 cpu_to_be32(ref_tag); 2246 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff); 2247 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */ 2248 2249 /* Transfer length */ 2250 cdb[28] = (u8)((num_blocks >> 24) & 0xff); 2251 cdb[29] = (u8)((num_blocks >> 16) & 0xff); 2252 cdb[30] = (u8)((num_blocks >> 8) & 0xff); 2253 cdb[31] = (u8)(num_blocks & 0xff); 2254 2255 /* set SCSI IO EEDPFlags */ 2256 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) { 2257 io_request->EEDPFlags = cpu_to_le16( 2258 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2259 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG | 2260 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP | 2261 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG | 2262 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE | 2263 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD); 2264 } else { 2265 io_request->EEDPFlags = cpu_to_le16( 2266 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG | 2267 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP); 2268 } 2269 io_request->Control |= cpu_to_le32((0x4 << 26)); 2270 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size); 2271 } else { 2272 /* Some drives don't support 16/12 byte CDB's, convert to 10 */ 2273 if (((cdb_len == 12) || (cdb_len == 16)) && 2274 (start_blk <= 0xffffffff)) { 2275 if (cdb_len == 16) { 2276 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10; 2277 flagvals = cdb[1]; 2278 groupnum = cdb[14]; 2279 control = cdb[15]; 2280 } else { 2281 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10; 2282 flagvals = cdb[1]; 2283 groupnum = cdb[10]; 2284 control = cdb[11]; 2285 } 2286 2287 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2288 2289 cdb[0] = opcode; 2290 cdb[1] = flagvals; 2291 cdb[6] = groupnum; 2292 cdb[9] = control; 2293 2294 /* Transfer length */ 2295 cdb[8] = (u8)(num_blocks & 0xff); 2296 cdb[7] = (u8)((num_blocks >> 8) & 0xff); 2297 2298 io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */ 2299 cdb_len = 10; 2300 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) { 2301 /* Convert to 16 byte CDB for large LBA's */ 2302 switch (cdb_len) { 2303 case 6: 2304 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16; 2305 control = cdb[5]; 2306 break; 2307 case 10: 2308 opcode = 2309 cdb[0] == READ_10 ? READ_16 : WRITE_16; 2310 flagvals = cdb[1]; 2311 groupnum = cdb[6]; 2312 control = cdb[9]; 2313 break; 2314 case 12: 2315 opcode = 2316 cdb[0] == READ_12 ? READ_16 : WRITE_16; 2317 flagvals = cdb[1]; 2318 groupnum = cdb[10]; 2319 control = cdb[11]; 2320 break; 2321 } 2322 2323 memset(cdb, 0, sizeof(io_request->CDB.CDB32)); 2324 2325 cdb[0] = opcode; 2326 cdb[1] = flagvals; 2327 cdb[14] = groupnum; 2328 cdb[15] = control; 2329 2330 /* Transfer length */ 2331 cdb[13] = (u8)(num_blocks & 0xff); 2332 cdb[12] = (u8)((num_blocks >> 8) & 0xff); 2333 cdb[11] = (u8)((num_blocks >> 16) & 0xff); 2334 cdb[10] = (u8)((num_blocks >> 24) & 0xff); 2335 2336 io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */ 2337 cdb_len = 16; 2338 } 2339 2340 /* Normal case, just load LBA here */ 2341 switch (cdb_len) { 2342 case 6: 2343 { 2344 u8 val = cdb[1] & 0xE0; 2345 cdb[3] = (u8)(start_blk & 0xff); 2346 cdb[2] = (u8)((start_blk >> 8) & 0xff); 2347 cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f); 2348 break; 2349 } 2350 case 10: 2351 cdb[5] = (u8)(start_blk & 0xff); 2352 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2353 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2354 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2355 break; 2356 case 12: 2357 cdb[5] = (u8)(start_blk & 0xff); 2358 cdb[4] = (u8)((start_blk >> 8) & 0xff); 2359 cdb[3] = (u8)((start_blk >> 16) & 0xff); 2360 cdb[2] = (u8)((start_blk >> 24) & 0xff); 2361 break; 2362 case 16: 2363 cdb[9] = (u8)(start_blk & 0xff); 2364 cdb[8] = (u8)((start_blk >> 8) & 0xff); 2365 cdb[7] = (u8)((start_blk >> 16) & 0xff); 2366 cdb[6] = (u8)((start_blk >> 24) & 0xff); 2367 cdb[5] = (u8)((start_blk >> 32) & 0xff); 2368 cdb[4] = (u8)((start_blk >> 40) & 0xff); 2369 cdb[3] = (u8)((start_blk >> 48) & 0xff); 2370 cdb[2] = (u8)((start_blk >> 56) & 0xff); 2371 break; 2372 } 2373 } 2374 } 2375 2376 /** 2377 * megasas_stream_detect - stream detection on read and and write IOs 2378 * @instance: Adapter soft state 2379 * @cmd: Command to be prepared 2380 * @io_info: IO Request info 2381 * 2382 */ 2383 2384 /** stream detection on read and and write IOs */ 2385 static void megasas_stream_detect(struct megasas_instance *instance, 2386 struct megasas_cmd_fusion *cmd, 2387 struct IO_REQUEST_INFO *io_info) 2388 { 2389 struct fusion_context *fusion = instance->ctrl_context; 2390 u32 device_id = io_info->ldTgtId; 2391 struct LD_STREAM_DETECT *current_ld_sd 2392 = fusion->stream_detect_by_ld[device_id]; 2393 u32 *track_stream = ¤t_ld_sd->mru_bit_map, stream_num; 2394 u32 shifted_values, unshifted_values; 2395 u32 index_value_mask, shifted_values_mask; 2396 int i; 2397 bool is_read_ahead = false; 2398 struct STREAM_DETECT *current_sd; 2399 /* find possible stream */ 2400 for (i = 0; i < MAX_STREAMS_TRACKED; ++i) { 2401 stream_num = (*track_stream >> 2402 (i * BITS_PER_INDEX_STREAM)) & 2403 STREAM_MASK; 2404 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2405 /* if we found a stream, update the raid 2406 * context and also update the mruBitMap 2407 */ 2408 /* boundary condition */ 2409 if ((current_sd->next_seq_lba) && 2410 (io_info->ldStartBlock >= current_sd->next_seq_lba) && 2411 (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) && 2412 (current_sd->is_read == io_info->isRead)) { 2413 2414 if ((io_info->ldStartBlock != current_sd->next_seq_lba) && 2415 ((!io_info->isRead) || (!is_read_ahead))) 2416 /* 2417 * Once the API availible we need to change this. 2418 * At this point we are not allowing any gap 2419 */ 2420 continue; 2421 2422 SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35); 2423 current_sd->next_seq_lba = 2424 io_info->ldStartBlock + io_info->numBlocks; 2425 /* 2426 * update the mruBitMap LRU 2427 */ 2428 shifted_values_mask = 2429 (1 << i * BITS_PER_INDEX_STREAM) - 1; 2430 shifted_values = ((*track_stream & shifted_values_mask) 2431 << BITS_PER_INDEX_STREAM); 2432 index_value_mask = 2433 STREAM_MASK << i * BITS_PER_INDEX_STREAM; 2434 unshifted_values = 2435 *track_stream & ~(shifted_values_mask | 2436 index_value_mask); 2437 *track_stream = 2438 unshifted_values | shifted_values | stream_num; 2439 return; 2440 } 2441 } 2442 /* 2443 * if we did not find any stream, create a new one 2444 * from the least recently used 2445 */ 2446 stream_num = (*track_stream >> 2447 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) & 2448 STREAM_MASK; 2449 current_sd = ¤t_ld_sd->stream_track[stream_num]; 2450 current_sd->is_read = io_info->isRead; 2451 current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks; 2452 *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num); 2453 return; 2454 } 2455 2456 /** 2457 * megasas_set_raidflag_cpu_affinity - This function sets the cpu 2458 * affinity (cpu of the controller) and raid_flags in the raid context 2459 * based on IO type. 2460 * 2461 * @praid_context: IO RAID context 2462 * @raid: LD raid map 2463 * @fp_possible: Is fast path possible? 2464 * @is_read: Is read IO? 2465 * 2466 */ 2467 static void 2468 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context, 2469 struct MR_LD_RAID *raid, bool fp_possible, 2470 u8 is_read, u32 scsi_buff_len) 2471 { 2472 u8 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2473 struct RAID_CONTEXT_G35 *rctx_g35; 2474 2475 rctx_g35 = &praid_context->raid_context_g35; 2476 if (fp_possible) { 2477 if (is_read) { 2478 if ((raid->cpuAffinity.pdRead.cpu0) && 2479 (raid->cpuAffinity.pdRead.cpu1)) 2480 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2481 else if (raid->cpuAffinity.pdRead.cpu1) 2482 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2483 } else { 2484 if ((raid->cpuAffinity.pdWrite.cpu0) && 2485 (raid->cpuAffinity.pdWrite.cpu1)) 2486 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2487 else if (raid->cpuAffinity.pdWrite.cpu1) 2488 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2489 /* Fast path cache by pass capable R0/R1 VD */ 2490 if ((raid->level <= 1) && 2491 (raid->capability.fp_cache_bypass_capable)) { 2492 rctx_g35->routing_flags |= 2493 (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT); 2494 rctx_g35->raid_flags = 2495 (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS 2496 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2497 } 2498 } 2499 } else { 2500 if (is_read) { 2501 if ((raid->cpuAffinity.ldRead.cpu0) && 2502 (raid->cpuAffinity.ldRead.cpu1)) 2503 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2504 else if (raid->cpuAffinity.ldRead.cpu1) 2505 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2506 } else { 2507 if ((raid->cpuAffinity.ldWrite.cpu0) && 2508 (raid->cpuAffinity.ldWrite.cpu1)) 2509 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS; 2510 else if (raid->cpuAffinity.ldWrite.cpu1) 2511 cpu_sel = MR_RAID_CTX_CPUSEL_1; 2512 2513 if (is_stream_detected(rctx_g35) && 2514 ((raid->level == 5) || (raid->level == 6)) && 2515 (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) && 2516 (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS)) 2517 cpu_sel = MR_RAID_CTX_CPUSEL_0; 2518 } 2519 } 2520 2521 rctx_g35->routing_flags |= 2522 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2523 2524 /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2525 * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS. 2526 * IO Subtype is not bitmap. 2527 */ 2528 if ((raid->level == 1) && (!is_read)) { 2529 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2530 praid_context->raid_context_g35.raid_flags = 2531 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT 2532 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT); 2533 } 2534 } 2535 2536 /** 2537 * megasas_build_ldio_fusion - Prepares IOs to devices 2538 * @instance: Adapter soft state 2539 * @scp: SCSI command 2540 * @cmd: Command to be prepared 2541 * 2542 * Prepares the io_request and chain elements (sg_frame) for IO 2543 * The IO can be for PD (Fast Path) or LD 2544 */ 2545 void 2546 megasas_build_ldio_fusion(struct megasas_instance *instance, 2547 struct scsi_cmnd *scp, 2548 struct megasas_cmd_fusion *cmd) 2549 { 2550 bool fp_possible; 2551 u16 ld; 2552 u32 start_lba_lo, start_lba_hi, device_id, datalength = 0; 2553 u32 scsi_buff_len; 2554 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2555 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 2556 struct IO_REQUEST_INFO io_info; 2557 struct fusion_context *fusion; 2558 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2559 u8 *raidLUN; 2560 unsigned long spinlock_flags; 2561 union RAID_CONTEXT_UNION *praid_context; 2562 struct MR_LD_RAID *raid = NULL; 2563 struct MR_PRIV_DEVICE *mrdev_priv; 2564 2565 device_id = MEGASAS_DEV_INDEX(scp); 2566 2567 fusion = instance->ctrl_context; 2568 2569 io_request = cmd->io_request; 2570 io_request->RaidContext.raid_context.virtual_disk_tgt_id = 2571 cpu_to_le16(device_id); 2572 io_request->RaidContext.raid_context.status = 0; 2573 io_request->RaidContext.raid_context.ex_status = 0; 2574 2575 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc; 2576 2577 start_lba_lo = 0; 2578 start_lba_hi = 0; 2579 fp_possible = false; 2580 2581 /* 2582 * 6-byte READ(0x08) or WRITE(0x0A) cdb 2583 */ 2584 if (scp->cmd_len == 6) { 2585 datalength = (u32) scp->cmnd[4]; 2586 start_lba_lo = ((u32) scp->cmnd[1] << 16) | 2587 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3]; 2588 2589 start_lba_lo &= 0x1FFFFF; 2590 } 2591 2592 /* 2593 * 10-byte READ(0x28) or WRITE(0x2A) cdb 2594 */ 2595 else if (scp->cmd_len == 10) { 2596 datalength = (u32) scp->cmnd[8] | 2597 ((u32) scp->cmnd[7] << 8); 2598 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2599 ((u32) scp->cmnd[3] << 16) | 2600 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2601 } 2602 2603 /* 2604 * 12-byte READ(0xA8) or WRITE(0xAA) cdb 2605 */ 2606 else if (scp->cmd_len == 12) { 2607 datalength = ((u32) scp->cmnd[6] << 24) | 2608 ((u32) scp->cmnd[7] << 16) | 2609 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2610 start_lba_lo = ((u32) scp->cmnd[2] << 24) | 2611 ((u32) scp->cmnd[3] << 16) | 2612 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2613 } 2614 2615 /* 2616 * 16-byte READ(0x88) or WRITE(0x8A) cdb 2617 */ 2618 else if (scp->cmd_len == 16) { 2619 datalength = ((u32) scp->cmnd[10] << 24) | 2620 ((u32) scp->cmnd[11] << 16) | 2621 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13]; 2622 start_lba_lo = ((u32) scp->cmnd[6] << 24) | 2623 ((u32) scp->cmnd[7] << 16) | 2624 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9]; 2625 2626 start_lba_hi = ((u32) scp->cmnd[2] << 24) | 2627 ((u32) scp->cmnd[3] << 16) | 2628 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5]; 2629 } 2630 2631 memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO)); 2632 io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo; 2633 io_info.numBlocks = datalength; 2634 io_info.ldTgtId = device_id; 2635 io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2636 scsi_buff_len = scsi_bufflen(scp); 2637 io_request->DataLength = cpu_to_le32(scsi_buff_len); 2638 2639 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 2640 io_info.isRead = 1; 2641 2642 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2643 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2644 2645 if (ld < instance->fw_supported_vd_count) 2646 raid = MR_LdRaidGet(ld, local_map_ptr); 2647 2648 if (!raid || (!fusion->fast_path_io)) { 2649 io_request->RaidContext.raid_context.reg_lock_flags = 0; 2650 fp_possible = false; 2651 } else { 2652 if (MR_BuildRaidContext(instance, &io_info, 2653 &io_request->RaidContext.raid_context, 2654 local_map_ptr, &raidLUN)) 2655 fp_possible = (io_info.fpOkForIo > 0) ? true : false; 2656 } 2657 2658 /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU 2659 id by default, not CPU group id, otherwise all MSI-X queues won't 2660 be utilized */ 2661 cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ? 2662 raw_smp_processor_id() % instance->msix_vectors : 0; 2663 2664 praid_context = &io_request->RaidContext; 2665 2666 if (instance->adapter_type == VENTURA_SERIES) { 2667 spin_lock_irqsave(&instance->stream_lock, spinlock_flags); 2668 megasas_stream_detect(instance, cmd, &io_info); 2669 spin_unlock_irqrestore(&instance->stream_lock, spinlock_flags); 2670 /* In ventura if stream detected for a read and it is read ahead 2671 * capable make this IO as LDIO 2672 */ 2673 if (is_stream_detected(&io_request->RaidContext.raid_context_g35) && 2674 io_info.isRead && io_info.ra_capable) 2675 fp_possible = false; 2676 2677 /* FP for Optimal raid level 1. 2678 * All large RAID-1 writes (> 32 KiB, both WT and WB modes) 2679 * are built by the driver as LD I/Os. 2680 * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os 2681 * (there is never a reason to process these as buffered writes) 2682 * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os 2683 * with the SLD bit asserted. 2684 */ 2685 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 2686 mrdev_priv = scp->device->hostdata; 2687 2688 if (atomic_inc_return(&instance->fw_outstanding) > 2689 (instance->host->can_queue)) { 2690 fp_possible = false; 2691 atomic_dec(&instance->fw_outstanding); 2692 } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) || 2693 (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) { 2694 fp_possible = false; 2695 atomic_dec(&instance->fw_outstanding); 2696 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE) 2697 atomic_set(&mrdev_priv->r1_ldio_hint, 2698 instance->r1_ldio_hint_default); 2699 } 2700 } 2701 2702 /* If raid is NULL, set CPU affinity to default CPU0 */ 2703 if (raid) 2704 megasas_set_raidflag_cpu_affinity(praid_context, 2705 raid, fp_possible, io_info.isRead, 2706 scsi_buff_len); 2707 else 2708 praid_context->raid_context_g35.routing_flags |= 2709 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT); 2710 } 2711 2712 if (fp_possible) { 2713 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp, 2714 local_map_ptr, start_lba_lo); 2715 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2716 cmd->request_desc->SCSIIO.RequestFlags = 2717 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO 2718 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2719 if (instance->adapter_type == INVADER_SERIES) { 2720 if (io_request->RaidContext.raid_context.reg_lock_flags == 2721 REGION_TYPE_UNUSED) 2722 cmd->request_desc->SCSIIO.RequestFlags = 2723 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2724 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2725 io_request->RaidContext.raid_context.type 2726 = MPI2_TYPE_CUDA; 2727 io_request->RaidContext.raid_context.nseg = 0x1; 2728 io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2729 io_request->RaidContext.raid_context.reg_lock_flags |= 2730 (MR_RL_FLAGS_GRANT_DESTINATION_CUDA | 2731 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2732 } else if (instance->adapter_type == VENTURA_SERIES) { 2733 io_request->RaidContext.raid_context_g35.nseg_type |= 2734 (1 << RAID_CONTEXT_NSEG_SHIFT); 2735 io_request->RaidContext.raid_context_g35.nseg_type |= 2736 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2737 io_request->RaidContext.raid_context_g35.routing_flags |= 2738 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2739 io_request->IoFlags |= 2740 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 2741 } 2742 if (fusion->load_balance_info && 2743 (fusion->load_balance_info[device_id].loadBalanceFlag) && 2744 (io_info.isRead)) { 2745 io_info.devHandle = 2746 get_updated_dev_handle(instance, 2747 &fusion->load_balance_info[device_id], 2748 &io_info, local_map_ptr); 2749 scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG; 2750 cmd->pd_r1_lb = io_info.pd_after_lb; 2751 if (instance->adapter_type == VENTURA_SERIES) 2752 io_request->RaidContext.raid_context_g35.span_arm 2753 = io_info.span_arm; 2754 else 2755 io_request->RaidContext.raid_context.span_arm 2756 = io_info.span_arm; 2757 2758 } else 2759 scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 2760 2761 if (instance->adapter_type == VENTURA_SERIES) 2762 cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle; 2763 else 2764 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID; 2765 2766 if ((raidLUN[0] == 1) && 2767 (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) { 2768 instance->dev_handle = !(instance->dev_handle); 2769 io_info.devHandle = 2770 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle]; 2771 } 2772 2773 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle; 2774 io_request->DevHandle = io_info.devHandle; 2775 cmd->pd_interface = io_info.pd_interface; 2776 /* populate the LUN field */ 2777 memcpy(io_request->LUN, raidLUN, 8); 2778 } else { 2779 io_request->RaidContext.raid_context.timeout_value = 2780 cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec); 2781 cmd->request_desc->SCSIIO.RequestFlags = 2782 (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO 2783 << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2784 if (instance->adapter_type == INVADER_SERIES) { 2785 if (io_info.do_fp_rlbypass || 2786 (io_request->RaidContext.raid_context.reg_lock_flags 2787 == REGION_TYPE_UNUSED)) 2788 cmd->request_desc->SCSIIO.RequestFlags = 2789 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK << 2790 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2791 io_request->RaidContext.raid_context.type 2792 = MPI2_TYPE_CUDA; 2793 io_request->RaidContext.raid_context.reg_lock_flags |= 2794 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 | 2795 MR_RL_FLAGS_SEQ_NUM_ENABLE); 2796 io_request->RaidContext.raid_context.nseg = 0x1; 2797 } else if (instance->adapter_type == VENTURA_SERIES) { 2798 io_request->RaidContext.raid_context_g35.routing_flags |= 2799 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2800 io_request->RaidContext.raid_context_g35.nseg_type |= 2801 (1 << RAID_CONTEXT_NSEG_SHIFT); 2802 io_request->RaidContext.raid_context_g35.nseg_type |= 2803 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2804 } 2805 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2806 io_request->DevHandle = cpu_to_le16(device_id); 2807 2808 } /* Not FP */ 2809 } 2810 2811 /** 2812 * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk 2813 * @instance: Adapter soft state 2814 * @scp: SCSI command 2815 * @cmd: Command to be prepared 2816 * 2817 * Prepares the io_request frame for non-rw io cmds for vd. 2818 */ 2819 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance, 2820 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd) 2821 { 2822 u32 device_id; 2823 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2824 u16 ld; 2825 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2826 struct fusion_context *fusion = instance->ctrl_context; 2827 u8 span, physArm; 2828 __le16 devHandle; 2829 u32 arRef, pd; 2830 struct MR_LD_RAID *raid; 2831 struct RAID_CONTEXT *pRAID_Context; 2832 u8 fp_possible = 1; 2833 2834 io_request = cmd->io_request; 2835 device_id = MEGASAS_DEV_INDEX(scmd); 2836 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2837 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2838 /* get RAID_Context pointer */ 2839 pRAID_Context = &io_request->RaidContext.raid_context; 2840 /* Check with FW team */ 2841 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2842 pRAID_Context->reg_lock_row_lba = 0; 2843 pRAID_Context->reg_lock_length = 0; 2844 2845 if (fusion->fast_path_io && ( 2846 device_id < instance->fw_supported_vd_count)) { 2847 2848 ld = MR_TargetIdToLdGet(device_id, local_map_ptr); 2849 if (ld >= instance->fw_supported_vd_count) 2850 fp_possible = 0; 2851 else { 2852 raid = MR_LdRaidGet(ld, local_map_ptr); 2853 if (!(raid->capability.fpNonRWCapable)) 2854 fp_possible = 0; 2855 } 2856 } else 2857 fp_possible = 0; 2858 2859 if (!fp_possible) { 2860 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2861 io_request->DevHandle = cpu_to_le16(device_id); 2862 io_request->LUN[1] = scmd->device->lun; 2863 pRAID_Context->timeout_value = 2864 cpu_to_le16 (scmd->request->timeout / HZ); 2865 cmd->request_desc->SCSIIO.RequestFlags = 2866 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2867 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2868 } else { 2869 2870 /* set RAID context values */ 2871 pRAID_Context->config_seq_num = raid->seqNum; 2872 if (instance->adapter_type != VENTURA_SERIES) 2873 pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ; 2874 pRAID_Context->timeout_value = 2875 cpu_to_le16(raid->fpIoTimeoutForLd); 2876 2877 /* get the DevHandle for the PD (since this is 2878 fpNonRWCapable, this is a single disk RAID0) */ 2879 span = physArm = 0; 2880 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr); 2881 pd = MR_ArPdGet(arRef, physArm, local_map_ptr); 2882 devHandle = MR_PdDevHandleGet(pd, local_map_ptr); 2883 2884 /* build request descriptor */ 2885 cmd->request_desc->SCSIIO.RequestFlags = 2886 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 2887 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2888 cmd->request_desc->SCSIIO.DevHandle = devHandle; 2889 2890 /* populate the LUN field */ 2891 memcpy(io_request->LUN, raid->LUN, 8); 2892 2893 /* build the raidScsiIO structure */ 2894 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 2895 io_request->DevHandle = devHandle; 2896 } 2897 } 2898 2899 /** 2900 * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd 2901 * @instance: Adapter soft state 2902 * @scp: SCSI command 2903 * @cmd: Command to be prepared 2904 * @fp_possible: parameter to detect fast path or firmware path io. 2905 * 2906 * Prepares the io_request frame for rw/non-rw io cmds for syspds 2907 */ 2908 static void 2909 megasas_build_syspd_fusion(struct megasas_instance *instance, 2910 struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, 2911 bool fp_possible) 2912 { 2913 u32 device_id; 2914 struct MPI2_RAID_SCSI_IO_REQUEST *io_request; 2915 u16 pd_index = 0; 2916 u16 os_timeout_value; 2917 u16 timeout_limit; 2918 struct MR_DRV_RAID_MAP_ALL *local_map_ptr; 2919 struct RAID_CONTEXT *pRAID_Context; 2920 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 2921 struct MR_PRIV_DEVICE *mr_device_priv_data; 2922 struct fusion_context *fusion = instance->ctrl_context; 2923 pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1]; 2924 2925 device_id = MEGASAS_DEV_INDEX(scmd); 2926 pd_index = MEGASAS_PD_INDEX(scmd); 2927 os_timeout_value = scmd->request->timeout / HZ; 2928 mr_device_priv_data = scmd->device->hostdata; 2929 cmd->pd_interface = mr_device_priv_data->interface_type; 2930 2931 io_request = cmd->io_request; 2932 /* get RAID_Context pointer */ 2933 pRAID_Context = &io_request->RaidContext.raid_context; 2934 pRAID_Context->reg_lock_flags = 0; 2935 pRAID_Context->reg_lock_row_lba = 0; 2936 pRAID_Context->reg_lock_length = 0; 2937 io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd)); 2938 io_request->LUN[1] = scmd->device->lun; 2939 pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD 2940 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT; 2941 2942 /* If FW supports PD sequence number */ 2943 if (instance->use_seqnum_jbod_fp && 2944 instance->pd_list[pd_index].driveType == TYPE_DISK) { 2945 /* TgtId must be incremented by 255 as jbod seq number is index 2946 * below raid map 2947 */ 2948 /* More than 256 PD/JBOD support for Ventura */ 2949 if (instance->support_morethan256jbod) 2950 pRAID_Context->virtual_disk_tgt_id = 2951 pd_sync->seq[pd_index].pd_target_id; 2952 else 2953 pRAID_Context->virtual_disk_tgt_id = 2954 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1)); 2955 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum; 2956 io_request->DevHandle = pd_sync->seq[pd_index].devHandle; 2957 if (instance->adapter_type == VENTURA_SERIES) { 2958 io_request->RaidContext.raid_context_g35.routing_flags |= 2959 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT); 2960 io_request->RaidContext.raid_context_g35.nseg_type |= 2961 (1 << RAID_CONTEXT_NSEG_SHIFT); 2962 io_request->RaidContext.raid_context_g35.nseg_type |= 2963 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT); 2964 } else { 2965 pRAID_Context->type = MPI2_TYPE_CUDA; 2966 pRAID_Context->nseg = 0x1; 2967 pRAID_Context->reg_lock_flags |= 2968 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA); 2969 } 2970 } else if (fusion->fast_path_io) { 2971 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2972 pRAID_Context->config_seq_num = 0; 2973 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)]; 2974 io_request->DevHandle = 2975 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl; 2976 } else { 2977 /* Want to send all IO via FW path */ 2978 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2979 pRAID_Context->config_seq_num = 0; 2980 io_request->DevHandle = cpu_to_le16(0xFFFF); 2981 } 2982 2983 cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle; 2984 cmd->request_desc->SCSIIO.MSIxIndex = 2985 instance->msix_vectors ? 2986 (raw_smp_processor_id() % instance->msix_vectors) : 0; 2987 2988 2989 if (!fp_possible) { 2990 /* system pd firmware path */ 2991 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST; 2992 cmd->request_desc->SCSIIO.RequestFlags = 2993 (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 2994 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 2995 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value); 2996 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id); 2997 } else { 2998 /* system pd Fast Path */ 2999 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST; 3000 timeout_limit = (scmd->device->type == TYPE_DISK) ? 3001 255 : 0xFFFF; 3002 pRAID_Context->timeout_value = 3003 cpu_to_le16((os_timeout_value > timeout_limit) ? 3004 timeout_limit : os_timeout_value); 3005 if (instance->adapter_type >= INVADER_SERIES) 3006 io_request->IoFlags |= 3007 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH); 3008 3009 cmd->request_desc->SCSIIO.RequestFlags = 3010 (MPI2_REQ_DESCRIPT_FLAGS_FP_IO << 3011 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3012 } 3013 } 3014 3015 /** 3016 * megasas_build_io_fusion - Prepares IOs to devices 3017 * @instance: Adapter soft state 3018 * @scp: SCSI command 3019 * @cmd: Command to be prepared 3020 * 3021 * Invokes helper functions to prepare request frames 3022 * and sets flags appropriate for IO/Non-IO cmd 3023 */ 3024 int 3025 megasas_build_io_fusion(struct megasas_instance *instance, 3026 struct scsi_cmnd *scp, 3027 struct megasas_cmd_fusion *cmd) 3028 { 3029 int sge_count; 3030 u8 cmd_type; 3031 struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request; 3032 struct MR_PRIV_DEVICE *mr_device_priv_data; 3033 mr_device_priv_data = scp->device->hostdata; 3034 3035 /* Zero out some fields so they don't get reused */ 3036 memset(io_request->LUN, 0x0, 8); 3037 io_request->CDB.EEDP32.PrimaryReferenceTag = 0; 3038 io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0; 3039 io_request->EEDPFlags = 0; 3040 io_request->Control = 0; 3041 io_request->EEDPBlockSize = 0; 3042 io_request->ChainOffset = 0; 3043 io_request->RaidContext.raid_context.raid_flags = 0; 3044 io_request->RaidContext.raid_context.type = 0; 3045 io_request->RaidContext.raid_context.nseg = 0; 3046 3047 memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len); 3048 /* 3049 * Just the CDB length,rest of the Flags are zero 3050 * This will be modified for FP in build_ldio_fusion 3051 */ 3052 io_request->IoFlags = cpu_to_le16(scp->cmd_len); 3053 3054 switch (cmd_type = megasas_cmd_type(scp)) { 3055 case READ_WRITE_LDIO: 3056 megasas_build_ldio_fusion(instance, scp, cmd); 3057 break; 3058 case NON_READ_WRITE_LDIO: 3059 megasas_build_ld_nonrw_fusion(instance, scp, cmd); 3060 break; 3061 case READ_WRITE_SYSPDIO: 3062 megasas_build_syspd_fusion(instance, scp, cmd, true); 3063 break; 3064 case NON_READ_WRITE_SYSPDIO: 3065 if (instance->secure_jbod_support || 3066 mr_device_priv_data->is_tm_capable) 3067 megasas_build_syspd_fusion(instance, scp, cmd, false); 3068 else 3069 megasas_build_syspd_fusion(instance, scp, cmd, true); 3070 break; 3071 default: 3072 break; 3073 } 3074 3075 /* 3076 * Construct SGL 3077 */ 3078 3079 sge_count = megasas_make_sgl(instance, scp, cmd); 3080 3081 if (sge_count > instance->max_num_sge || (sge_count < 0)) { 3082 dev_err(&instance->pdev->dev, 3083 "%s %d sge_count (%d) is out of range. Range is: 0-%d\n", 3084 __func__, __LINE__, sge_count, instance->max_num_sge); 3085 return 1; 3086 } 3087 3088 if (instance->adapter_type == VENTURA_SERIES) { 3089 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count); 3090 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags); 3091 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type); 3092 } else { 3093 /* numSGE store lower 8 bit of sge_count. 3094 * numSGEExt store higher 8 bit of sge_count 3095 */ 3096 io_request->RaidContext.raid_context.num_sge = sge_count; 3097 io_request->RaidContext.raid_context.num_sge_ext = 3098 (u8)(sge_count >> 8); 3099 } 3100 3101 io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING); 3102 3103 if (scp->sc_data_direction == PCI_DMA_TODEVICE) 3104 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE); 3105 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) 3106 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ); 3107 3108 io_request->SGLOffset0 = 3109 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4; 3110 3111 io_request->SenseBufferLowAddress = 3112 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr)); 3113 io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE; 3114 3115 cmd->scmd = scp; 3116 scp->SCp.ptr = (char *)cmd; 3117 3118 return 0; 3119 } 3120 3121 static union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3122 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index) 3123 { 3124 u8 *p; 3125 struct fusion_context *fusion; 3126 3127 fusion = instance->ctrl_context; 3128 p = fusion->req_frames_desc + 3129 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index; 3130 3131 return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p; 3132 } 3133 3134 3135 /* megasas_prepate_secondRaid1_IO 3136 * It prepares the raid 1 second IO 3137 */ 3138 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance, 3139 struct megasas_cmd_fusion *cmd, 3140 struct megasas_cmd_fusion *r1_cmd) 3141 { 3142 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL; 3143 struct fusion_context *fusion; 3144 fusion = instance->ctrl_context; 3145 req_desc = cmd->request_desc; 3146 /* copy the io request frame as well as 8 SGEs data for r1 command*/ 3147 memcpy(r1_cmd->io_request, cmd->io_request, 3148 (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST))); 3149 memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL, 3150 (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION))); 3151 /*sense buffer is different for r1 command*/ 3152 r1_cmd->io_request->SenseBufferLowAddress = 3153 cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr)); 3154 r1_cmd->scmd = cmd->scmd; 3155 req_desc2 = megasas_get_request_descriptor(instance, 3156 (r1_cmd->index - 1)); 3157 req_desc2->Words = 0; 3158 r1_cmd->request_desc = req_desc2; 3159 req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index); 3160 req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags; 3161 r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle; 3162 r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle; 3163 r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle; 3164 cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3165 cpu_to_le16(r1_cmd->index); 3166 r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid = 3167 cpu_to_le16(cmd->index); 3168 /*MSIxIndex of both commands request descriptors should be same*/ 3169 r1_cmd->request_desc->SCSIIO.MSIxIndex = 3170 cmd->request_desc->SCSIIO.MSIxIndex; 3171 /*span arm is different for r1 cmd*/ 3172 r1_cmd->io_request->RaidContext.raid_context_g35.span_arm = 3173 cmd->io_request->RaidContext.raid_context_g35.span_arm + 1; 3174 } 3175 3176 /** 3177 * megasas_build_and_issue_cmd_fusion -Main routine for building and 3178 * issuing non IOCTL cmd 3179 * @instance: Adapter soft state 3180 * @scmd: pointer to scsi cmd from OS 3181 */ 3182 static u32 3183 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance, 3184 struct scsi_cmnd *scmd) 3185 { 3186 struct megasas_cmd_fusion *cmd, *r1_cmd = NULL; 3187 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3188 u32 index; 3189 struct fusion_context *fusion; 3190 3191 fusion = instance->ctrl_context; 3192 3193 if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) && 3194 instance->ldio_threshold && 3195 (atomic_inc_return(&instance->ldio_outstanding) > 3196 instance->ldio_threshold)) { 3197 atomic_dec(&instance->ldio_outstanding); 3198 return SCSI_MLQUEUE_DEVICE_BUSY; 3199 } 3200 3201 if (atomic_inc_return(&instance->fw_outstanding) > 3202 instance->host->can_queue) { 3203 atomic_dec(&instance->fw_outstanding); 3204 return SCSI_MLQUEUE_HOST_BUSY; 3205 } 3206 3207 cmd = megasas_get_cmd_fusion(instance, scmd->request->tag); 3208 3209 if (!cmd) { 3210 atomic_dec(&instance->fw_outstanding); 3211 return SCSI_MLQUEUE_HOST_BUSY; 3212 } 3213 3214 index = cmd->index; 3215 3216 req_desc = megasas_get_request_descriptor(instance, index-1); 3217 3218 req_desc->Words = 0; 3219 cmd->request_desc = req_desc; 3220 3221 if (megasas_build_io_fusion(instance, scmd, cmd)) { 3222 megasas_return_cmd_fusion(instance, cmd); 3223 dev_err(&instance->pdev->dev, "Error building command\n"); 3224 cmd->request_desc = NULL; 3225 atomic_dec(&instance->fw_outstanding); 3226 return SCSI_MLQUEUE_HOST_BUSY; 3227 } 3228 3229 req_desc = cmd->request_desc; 3230 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3231 3232 if (cmd->io_request->ChainOffset != 0 && 3233 cmd->io_request->ChainOffset != 0xF) 3234 dev_err(&instance->pdev->dev, "The chain offset value is not " 3235 "correct : %x\n", cmd->io_request->ChainOffset); 3236 /* 3237 * if it is raid 1/10 fp write capable. 3238 * try to get second command from pool and construct it. 3239 * From FW, it has confirmed that lba values of two PDs 3240 * corresponds to single R1/10 LD are always same 3241 * 3242 */ 3243 /* driver side count always should be less than max_fw_cmds 3244 * to get new command 3245 */ 3246 if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) { 3247 r1_cmd = megasas_get_cmd_fusion(instance, 3248 (scmd->request->tag + instance->max_fw_cmds)); 3249 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd); 3250 } 3251 3252 3253 /* 3254 * Issue the command to the FW 3255 */ 3256 3257 megasas_fire_cmd_fusion(instance, req_desc); 3258 3259 if (r1_cmd) 3260 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc); 3261 3262 3263 return 0; 3264 } 3265 3266 /** 3267 * megasas_complete_r1_command - 3268 * completes R1 FP write commands which has valid peer smid 3269 * @instance: Adapter soft state 3270 * @cmd_fusion: MPT command frame 3271 * 3272 */ 3273 static inline void 3274 megasas_complete_r1_command(struct megasas_instance *instance, 3275 struct megasas_cmd_fusion *cmd) 3276 { 3277 u8 *sense, status, ex_status; 3278 u32 data_length; 3279 u16 peer_smid; 3280 struct fusion_context *fusion; 3281 struct megasas_cmd_fusion *r1_cmd = NULL; 3282 struct scsi_cmnd *scmd_local = NULL; 3283 struct RAID_CONTEXT_G35 *rctx_g35; 3284 3285 rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35; 3286 fusion = instance->ctrl_context; 3287 peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid); 3288 3289 r1_cmd = fusion->cmd_list[peer_smid - 1]; 3290 scmd_local = cmd->scmd; 3291 status = rctx_g35->status; 3292 ex_status = rctx_g35->ex_status; 3293 data_length = cmd->io_request->DataLength; 3294 sense = cmd->sense; 3295 3296 cmd->cmd_completed = true; 3297 3298 /* Check if peer command is completed or not*/ 3299 if (r1_cmd->cmd_completed) { 3300 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35; 3301 if (rctx_g35->status != MFI_STAT_OK) { 3302 status = rctx_g35->status; 3303 ex_status = rctx_g35->ex_status; 3304 data_length = r1_cmd->io_request->DataLength; 3305 sense = r1_cmd->sense; 3306 } 3307 3308 megasas_return_cmd_fusion(instance, r1_cmd); 3309 map_cmd_status(fusion, scmd_local, status, ex_status, 3310 le32_to_cpu(data_length), sense); 3311 if (instance->ldio_threshold && 3312 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 3313 atomic_dec(&instance->ldio_outstanding); 3314 scmd_local->SCp.ptr = NULL; 3315 megasas_return_cmd_fusion(instance, cmd); 3316 scsi_dma_unmap(scmd_local); 3317 scmd_local->scsi_done(scmd_local); 3318 } 3319 } 3320 3321 /** 3322 * complete_cmd_fusion - Completes command 3323 * @instance: Adapter soft state 3324 * Completes all commands that is in reply descriptor queue 3325 */ 3326 int 3327 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex) 3328 { 3329 union MPI2_REPLY_DESCRIPTORS_UNION *desc; 3330 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc; 3331 struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req; 3332 struct fusion_context *fusion; 3333 struct megasas_cmd *cmd_mfi; 3334 struct megasas_cmd_fusion *cmd_fusion; 3335 u16 smid, num_completed; 3336 u8 reply_descript_type, *sense, status, extStatus; 3337 u32 device_id, data_length; 3338 union desc_value d_val; 3339 struct LD_LOAD_BALANCE_INFO *lbinfo; 3340 int threshold_reply_count = 0; 3341 struct scsi_cmnd *scmd_local = NULL; 3342 struct MR_TASK_MANAGE_REQUEST *mr_tm_req; 3343 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req; 3344 3345 fusion = instance->ctrl_context; 3346 3347 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) 3348 return IRQ_HANDLED; 3349 3350 desc = fusion->reply_frames_desc[MSIxIndex] + 3351 fusion->last_reply_idx[MSIxIndex]; 3352 3353 reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3354 3355 d_val.word = desc->Words; 3356 3357 reply_descript_type = reply_desc->ReplyFlags & 3358 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3359 3360 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3361 return IRQ_NONE; 3362 3363 num_completed = 0; 3364 3365 while (d_val.u.low != cpu_to_le32(UINT_MAX) && 3366 d_val.u.high != cpu_to_le32(UINT_MAX)) { 3367 3368 smid = le16_to_cpu(reply_desc->SMID); 3369 cmd_fusion = fusion->cmd_list[smid - 1]; 3370 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *) 3371 cmd_fusion->io_request; 3372 3373 scmd_local = cmd_fusion->scmd; 3374 status = scsi_io_req->RaidContext.raid_context.status; 3375 extStatus = scsi_io_req->RaidContext.raid_context.ex_status; 3376 sense = cmd_fusion->sense; 3377 data_length = scsi_io_req->DataLength; 3378 3379 switch (scsi_io_req->Function) { 3380 case MPI2_FUNCTION_SCSI_TASK_MGMT: 3381 mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *) 3382 cmd_fusion->io_request; 3383 mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) 3384 &mr_tm_req->TmRequest; 3385 dev_dbg(&instance->pdev->dev, "TM completion:" 3386 "type: 0x%x TaskMID: 0x%x\n", 3387 mpi_tm_req->TaskType, mpi_tm_req->TaskMID); 3388 complete(&cmd_fusion->done); 3389 break; 3390 case MPI2_FUNCTION_SCSI_IO_REQUEST: /*Fast Path IO.*/ 3391 /* Update load balancing info */ 3392 if (fusion->load_balance_info && 3393 (cmd_fusion->scmd->SCp.Status & 3394 MEGASAS_LOAD_BALANCE_FLAG)) { 3395 device_id = MEGASAS_DEV_INDEX(scmd_local); 3396 lbinfo = &fusion->load_balance_info[device_id]; 3397 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]); 3398 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG; 3399 } 3400 //Fall thru and complete IO 3401 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */ 3402 atomic_dec(&instance->fw_outstanding); 3403 if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) { 3404 map_cmd_status(fusion, scmd_local, status, 3405 extStatus, le32_to_cpu(data_length), 3406 sense); 3407 if (instance->ldio_threshold && 3408 (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)) 3409 atomic_dec(&instance->ldio_outstanding); 3410 scmd_local->SCp.ptr = NULL; 3411 megasas_return_cmd_fusion(instance, cmd_fusion); 3412 scsi_dma_unmap(scmd_local); 3413 scmd_local->scsi_done(scmd_local); 3414 } else /* Optimal VD - R1 FP command completion. */ 3415 megasas_complete_r1_command(instance, cmd_fusion); 3416 break; 3417 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */ 3418 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3419 /* Poll mode. Dummy free. 3420 * In case of Interrupt mode, caller has reverse check. 3421 */ 3422 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) { 3423 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE; 3424 megasas_return_cmd(instance, cmd_mfi); 3425 } else 3426 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3427 break; 3428 } 3429 3430 fusion->last_reply_idx[MSIxIndex]++; 3431 if (fusion->last_reply_idx[MSIxIndex] >= 3432 fusion->reply_q_depth) 3433 fusion->last_reply_idx[MSIxIndex] = 0; 3434 3435 desc->Words = cpu_to_le64(ULLONG_MAX); 3436 num_completed++; 3437 threshold_reply_count++; 3438 3439 /* Get the next reply descriptor */ 3440 if (!fusion->last_reply_idx[MSIxIndex]) 3441 desc = fusion->reply_frames_desc[MSIxIndex]; 3442 else 3443 desc++; 3444 3445 reply_desc = 3446 (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc; 3447 3448 d_val.word = desc->Words; 3449 3450 reply_descript_type = reply_desc->ReplyFlags & 3451 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK; 3452 3453 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) 3454 break; 3455 /* 3456 * Write to reply post host index register after completing threshold 3457 * number of reply counts and still there are more replies in reply queue 3458 * pending to be completed 3459 */ 3460 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) { 3461 if (instance->msix_combined) 3462 writel(((MSIxIndex & 0x7) << 24) | 3463 fusion->last_reply_idx[MSIxIndex], 3464 instance->reply_post_host_index_addr[MSIxIndex/8]); 3465 else 3466 writel((MSIxIndex << 24) | 3467 fusion->last_reply_idx[MSIxIndex], 3468 instance->reply_post_host_index_addr[0]); 3469 threshold_reply_count = 0; 3470 } 3471 } 3472 3473 if (!num_completed) 3474 return IRQ_NONE; 3475 3476 wmb(); 3477 if (instance->msix_combined) 3478 writel(((MSIxIndex & 0x7) << 24) | 3479 fusion->last_reply_idx[MSIxIndex], 3480 instance->reply_post_host_index_addr[MSIxIndex/8]); 3481 else 3482 writel((MSIxIndex << 24) | 3483 fusion->last_reply_idx[MSIxIndex], 3484 instance->reply_post_host_index_addr[0]); 3485 megasas_check_and_restore_queue_depth(instance); 3486 return IRQ_HANDLED; 3487 } 3488 3489 /** 3490 * megasas_sync_irqs - Synchronizes all IRQs owned by adapter 3491 * @instance: Adapter soft state 3492 */ 3493 void megasas_sync_irqs(unsigned long instance_addr) 3494 { 3495 u32 count, i; 3496 struct megasas_instance *instance = 3497 (struct megasas_instance *)instance_addr; 3498 3499 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3500 3501 for (i = 0; i < count; i++) 3502 synchronize_irq(pci_irq_vector(instance->pdev, i)); 3503 } 3504 3505 /** 3506 * megasas_complete_cmd_dpc_fusion - Completes command 3507 * @instance: Adapter soft state 3508 * 3509 * Tasklet to complete cmds 3510 */ 3511 void 3512 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr) 3513 { 3514 struct megasas_instance *instance = 3515 (struct megasas_instance *)instance_addr; 3516 unsigned long flags; 3517 u32 count, MSIxIndex; 3518 3519 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3520 3521 /* If we have already declared adapter dead, donot complete cmds */ 3522 spin_lock_irqsave(&instance->hba_lock, flags); 3523 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 3524 spin_unlock_irqrestore(&instance->hba_lock, flags); 3525 return; 3526 } 3527 spin_unlock_irqrestore(&instance->hba_lock, flags); 3528 3529 for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) 3530 complete_cmd_fusion(instance, MSIxIndex); 3531 } 3532 3533 /** 3534 * megasas_isr_fusion - isr entry point 3535 */ 3536 irqreturn_t megasas_isr_fusion(int irq, void *devp) 3537 { 3538 struct megasas_irq_context *irq_context = devp; 3539 struct megasas_instance *instance = irq_context->instance; 3540 u32 mfiStatus, fw_state, dma_state; 3541 3542 if (instance->mask_interrupts) 3543 return IRQ_NONE; 3544 3545 if (!instance->msix_vectors) { 3546 mfiStatus = instance->instancet->clear_intr(instance->reg_set); 3547 if (!mfiStatus) 3548 return IRQ_NONE; 3549 } 3550 3551 /* If we are resetting, bail */ 3552 if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) { 3553 instance->instancet->clear_intr(instance->reg_set); 3554 return IRQ_HANDLED; 3555 } 3556 3557 if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) { 3558 instance->instancet->clear_intr(instance->reg_set); 3559 /* If we didn't complete any commands, check for FW fault */ 3560 fw_state = instance->instancet->read_fw_status_reg( 3561 instance->reg_set) & MFI_STATE_MASK; 3562 dma_state = instance->instancet->read_fw_status_reg 3563 (instance->reg_set) & MFI_STATE_DMADONE; 3564 if (instance->crash_dump_drv_support && 3565 instance->crash_dump_app_support) { 3566 /* Start collecting crash, if DMA bit is done */ 3567 if ((fw_state == MFI_STATE_FAULT) && dma_state) 3568 schedule_work(&instance->crash_init); 3569 else if (fw_state == MFI_STATE_FAULT) { 3570 if (instance->unload == 0) 3571 schedule_work(&instance->work_init); 3572 } 3573 } else if (fw_state == MFI_STATE_FAULT) { 3574 dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt" 3575 "for scsi%d\n", instance->host->host_no); 3576 if (instance->unload == 0) 3577 schedule_work(&instance->work_init); 3578 } 3579 } 3580 3581 return IRQ_HANDLED; 3582 } 3583 3584 /** 3585 * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru 3586 * @instance: Adapter soft state 3587 * mfi_cmd: megasas_cmd pointer 3588 * 3589 */ 3590 void 3591 build_mpt_mfi_pass_thru(struct megasas_instance *instance, 3592 struct megasas_cmd *mfi_cmd) 3593 { 3594 struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain; 3595 struct MPI2_RAID_SCSI_IO_REQUEST *io_req; 3596 struct megasas_cmd_fusion *cmd; 3597 struct fusion_context *fusion; 3598 struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr; 3599 3600 fusion = instance->ctrl_context; 3601 3602 cmd = megasas_get_cmd_fusion(instance, 3603 instance->max_scsi_cmds + mfi_cmd->index); 3604 3605 /* Save the smid. To be used for returning the cmd */ 3606 mfi_cmd->context.smid = cmd->index; 3607 3608 /* 3609 * For cmds where the flag is set, store the flag and check 3610 * on completion. For cmds with this flag, don't call 3611 * megasas_complete_cmd 3612 */ 3613 3614 if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE)) 3615 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE; 3616 3617 io_req = cmd->io_request; 3618 3619 if (instance->adapter_type >= INVADER_SERIES) { 3620 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = 3621 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL; 3622 sgl_ptr_end += fusion->max_sge_in_main_msg - 1; 3623 sgl_ptr_end->Flags = 0; 3624 } 3625 3626 mpi25_ieee_chain = 3627 (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain; 3628 3629 io_req->Function = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST; 3630 io_req->SGLOffset0 = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, 3631 SGL) / 4; 3632 io_req->ChainOffset = fusion->chain_offset_mfi_pthru; 3633 3634 mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr); 3635 3636 mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT | 3637 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR; 3638 3639 mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size); 3640 } 3641 3642 /** 3643 * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd 3644 * @instance: Adapter soft state 3645 * @cmd: mfi cmd to build 3646 * 3647 */ 3648 union MEGASAS_REQUEST_DESCRIPTOR_UNION * 3649 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd) 3650 { 3651 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL; 3652 u16 index; 3653 3654 build_mpt_mfi_pass_thru(instance, cmd); 3655 index = cmd->context.smid; 3656 3657 req_desc = megasas_get_request_descriptor(instance, index - 1); 3658 3659 req_desc->Words = 0; 3660 req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO << 3661 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 3662 3663 req_desc->SCSIIO.SMID = cpu_to_le16(index); 3664 3665 return req_desc; 3666 } 3667 3668 /** 3669 * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd 3670 * @instance: Adapter soft state 3671 * @cmd: mfi cmd pointer 3672 * 3673 */ 3674 void 3675 megasas_issue_dcmd_fusion(struct megasas_instance *instance, 3676 struct megasas_cmd *cmd) 3677 { 3678 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3679 3680 req_desc = build_mpt_cmd(instance, cmd); 3681 3682 megasas_fire_cmd_fusion(instance, req_desc); 3683 return; 3684 } 3685 3686 /** 3687 * megasas_release_fusion - Reverses the FW initialization 3688 * @instance: Adapter soft state 3689 */ 3690 void 3691 megasas_release_fusion(struct megasas_instance *instance) 3692 { 3693 megasas_free_ioc_init_cmd(instance); 3694 megasas_free_cmds(instance); 3695 megasas_free_cmds_fusion(instance); 3696 3697 iounmap(instance->reg_set); 3698 3699 pci_release_selected_regions(instance->pdev, 1<<instance->bar); 3700 } 3701 3702 /** 3703 * megasas_read_fw_status_reg_fusion - returns the current FW status value 3704 * @regs: MFI register set 3705 */ 3706 static u32 3707 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs) 3708 { 3709 return readl(&(regs)->outbound_scratch_pad); 3710 } 3711 3712 /** 3713 * megasas_alloc_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3714 * @instance: Controller's soft instance 3715 * return: Number of allocated host crash buffers 3716 */ 3717 static void 3718 megasas_alloc_host_crash_buffer(struct megasas_instance *instance) 3719 { 3720 unsigned int i; 3721 3722 for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) { 3723 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE); 3724 if (!instance->crash_buf[i]) { 3725 dev_info(&instance->pdev->dev, "Firmware crash dump " 3726 "memory allocation failed at index %d\n", i); 3727 break; 3728 } 3729 } 3730 instance->drv_buf_alloc = i; 3731 } 3732 3733 /** 3734 * megasas_free_host_crash_buffer - Host buffers for Crash dump collection from Firmware 3735 * @instance: Controller's soft instance 3736 */ 3737 void 3738 megasas_free_host_crash_buffer(struct megasas_instance *instance) 3739 { 3740 unsigned int i; 3741 for (i = 0; i < instance->drv_buf_alloc; i++) { 3742 if (instance->crash_buf[i]) 3743 vfree(instance->crash_buf[i]); 3744 } 3745 instance->drv_buf_index = 0; 3746 instance->drv_buf_alloc = 0; 3747 instance->fw_crash_state = UNAVAILABLE; 3748 instance->fw_crash_buffer_size = 0; 3749 } 3750 3751 /** 3752 * megasas_adp_reset_fusion - For controller reset 3753 * @regs: MFI register set 3754 */ 3755 static int 3756 megasas_adp_reset_fusion(struct megasas_instance *instance, 3757 struct megasas_register_set __iomem *regs) 3758 { 3759 u32 host_diag, abs_state, retry; 3760 3761 /* Now try to reset the chip */ 3762 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3763 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3764 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3765 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3766 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3767 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3768 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset); 3769 3770 /* Check that the diag write enable (DRWE) bit is on */ 3771 host_diag = readl(&instance->reg_set->fusion_host_diag); 3772 retry = 0; 3773 while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) { 3774 msleep(100); 3775 host_diag = readl(&instance->reg_set->fusion_host_diag); 3776 if (retry++ == 100) { 3777 dev_warn(&instance->pdev->dev, 3778 "Host diag unlock failed from %s %d\n", 3779 __func__, __LINE__); 3780 break; 3781 } 3782 } 3783 if (!(host_diag & HOST_DIAG_WRITE_ENABLE)) 3784 return -1; 3785 3786 /* Send chip reset command */ 3787 writel(host_diag | HOST_DIAG_RESET_ADAPTER, 3788 &instance->reg_set->fusion_host_diag); 3789 msleep(3000); 3790 3791 /* Make sure reset adapter bit is cleared */ 3792 host_diag = readl(&instance->reg_set->fusion_host_diag); 3793 retry = 0; 3794 while (host_diag & HOST_DIAG_RESET_ADAPTER) { 3795 msleep(100); 3796 host_diag = readl(&instance->reg_set->fusion_host_diag); 3797 if (retry++ == 1000) { 3798 dev_warn(&instance->pdev->dev, 3799 "Diag reset adapter never cleared %s %d\n", 3800 __func__, __LINE__); 3801 break; 3802 } 3803 } 3804 if (host_diag & HOST_DIAG_RESET_ADAPTER) 3805 return -1; 3806 3807 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set) 3808 & MFI_STATE_MASK; 3809 retry = 0; 3810 3811 while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) { 3812 msleep(100); 3813 abs_state = instance->instancet-> 3814 read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK; 3815 } 3816 if (abs_state <= MFI_STATE_FW_INIT) { 3817 dev_warn(&instance->pdev->dev, 3818 "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n", 3819 abs_state, __func__, __LINE__); 3820 return -1; 3821 } 3822 3823 return 0; 3824 } 3825 3826 /** 3827 * megasas_check_reset_fusion - For controller reset check 3828 * @regs: MFI register set 3829 */ 3830 static int 3831 megasas_check_reset_fusion(struct megasas_instance *instance, 3832 struct megasas_register_set __iomem *regs) 3833 { 3834 return 0; 3835 } 3836 3837 /* This function waits for outstanding commands on fusion to complete */ 3838 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance, 3839 int reason, int *convert) 3840 { 3841 int i, outstanding, retval = 0, hb_seconds_missed = 0; 3842 u32 fw_state; 3843 3844 for (i = 0; i < resetwaittime; i++) { 3845 /* Check if firmware is in fault state */ 3846 fw_state = instance->instancet->read_fw_status_reg( 3847 instance->reg_set) & MFI_STATE_MASK; 3848 if (fw_state == MFI_STATE_FAULT) { 3849 dev_warn(&instance->pdev->dev, "Found FW in FAULT state," 3850 " will reset adapter scsi%d.\n", 3851 instance->host->host_no); 3852 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3853 if (instance->requestorId && reason) { 3854 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT" 3855 " state while polling during" 3856 " I/O timeout handling for %d\n", 3857 instance->host->host_no); 3858 *convert = 1; 3859 } 3860 3861 retval = 1; 3862 goto out; 3863 } 3864 3865 if (reason == MFI_IO_TIMEOUT_OCR) { 3866 dev_info(&instance->pdev->dev, 3867 "MFI IO is timed out, initiating OCR\n"); 3868 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3869 retval = 1; 3870 goto out; 3871 } 3872 3873 /* If SR-IOV VF mode & heartbeat timeout, don't wait */ 3874 if (instance->requestorId && !reason) { 3875 retval = 1; 3876 goto out; 3877 } 3878 3879 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */ 3880 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) { 3881 if (instance->hb_host_mem->HB.fwCounter != 3882 instance->hb_host_mem->HB.driverCounter) { 3883 instance->hb_host_mem->HB.driverCounter = 3884 instance->hb_host_mem->HB.fwCounter; 3885 hb_seconds_missed = 0; 3886 } else { 3887 hb_seconds_missed++; 3888 if (hb_seconds_missed == 3889 (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) { 3890 dev_warn(&instance->pdev->dev, "SR-IOV:" 3891 " Heartbeat never completed " 3892 " while polling during I/O " 3893 " timeout handling for " 3894 "scsi%d.\n", 3895 instance->host->host_no); 3896 *convert = 1; 3897 retval = 1; 3898 goto out; 3899 } 3900 } 3901 } 3902 3903 megasas_complete_cmd_dpc_fusion((unsigned long)instance); 3904 outstanding = atomic_read(&instance->fw_outstanding); 3905 if (!outstanding) 3906 goto out; 3907 3908 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) { 3909 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d " 3910 "commands to complete for scsi%d\n", i, 3911 outstanding, instance->host->host_no); 3912 } 3913 msleep(1000); 3914 } 3915 3916 if (atomic_read(&instance->fw_outstanding)) { 3917 dev_err(&instance->pdev->dev, "pending commands remain after waiting, " 3918 "will reset adapter scsi%d.\n", 3919 instance->host->host_no); 3920 *convert = 1; 3921 retval = 1; 3922 } 3923 out: 3924 return retval; 3925 } 3926 3927 void megasas_reset_reply_desc(struct megasas_instance *instance) 3928 { 3929 int i, j, count; 3930 struct fusion_context *fusion; 3931 union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc; 3932 3933 fusion = instance->ctrl_context; 3934 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1; 3935 for (i = 0 ; i < count ; i++) { 3936 fusion->last_reply_idx[i] = 0; 3937 reply_desc = fusion->reply_frames_desc[i]; 3938 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++) 3939 reply_desc->Words = cpu_to_le64(ULLONG_MAX); 3940 } 3941 } 3942 3943 /* 3944 * megasas_refire_mgmt_cmd : Re-fire management commands 3945 * @instance: Controller's soft instance 3946 */ 3947 void megasas_refire_mgmt_cmd(struct megasas_instance *instance) 3948 { 3949 int j; 3950 struct megasas_cmd_fusion *cmd_fusion; 3951 struct fusion_context *fusion; 3952 struct megasas_cmd *cmd_mfi; 3953 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 3954 u16 smid; 3955 bool refire_cmd = 0; 3956 3957 fusion = instance->ctrl_context; 3958 3959 /* Re-fire management commands. 3960 * Do not traverse complet MPT frame pool. Start from max_scsi_cmds. 3961 */ 3962 for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) { 3963 cmd_fusion = fusion->cmd_list[j]; 3964 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx]; 3965 smid = le16_to_cpu(cmd_mfi->context.smid); 3966 3967 if (!smid) 3968 continue; 3969 3970 /* Do not refire shutdown command */ 3971 if (le32_to_cpu(cmd_mfi->frame->dcmd.opcode) == 3972 MR_DCMD_CTRL_SHUTDOWN) { 3973 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK; 3974 megasas_complete_cmd(instance, cmd_mfi, DID_OK); 3975 continue; 3976 } 3977 3978 req_desc = megasas_get_request_descriptor 3979 (instance, smid - 1); 3980 refire_cmd = req_desc && ((cmd_mfi->frame->dcmd.opcode != 3981 cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) && 3982 (cmd_mfi->frame->dcmd.opcode != 3983 cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO))) 3984 && !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE); 3985 if (refire_cmd) 3986 megasas_fire_cmd_fusion(instance, req_desc); 3987 else 3988 megasas_return_cmd(instance, cmd_mfi); 3989 } 3990 } 3991 3992 /* 3993 * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device 3994 * @instance: per adapter struct 3995 * @channel: the channel assigned by the OS 3996 * @id: the id assigned by the OS 3997 * 3998 * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED 3999 */ 4000 4001 static int megasas_track_scsiio(struct megasas_instance *instance, 4002 int id, int channel) 4003 { 4004 int i, found = 0; 4005 struct megasas_cmd_fusion *cmd_fusion; 4006 struct fusion_context *fusion; 4007 fusion = instance->ctrl_context; 4008 4009 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4010 cmd_fusion = fusion->cmd_list[i]; 4011 if (cmd_fusion->scmd && 4012 (cmd_fusion->scmd->device->id == id && 4013 cmd_fusion->scmd->device->channel == channel)) { 4014 dev_info(&instance->pdev->dev, 4015 "SCSI commands pending to target" 4016 "channel %d id %d \tSMID: 0x%x\n", 4017 channel, id, cmd_fusion->index); 4018 scsi_print_command(cmd_fusion->scmd); 4019 found = 1; 4020 break; 4021 } 4022 } 4023 4024 return found ? FAILED : SUCCESS; 4025 } 4026 4027 /** 4028 * megasas_tm_response_code - translation of device response code 4029 * @ioc: per adapter object 4030 * @mpi_reply: MPI reply returned by firmware 4031 * 4032 * Return nothing. 4033 */ 4034 static void 4035 megasas_tm_response_code(struct megasas_instance *instance, 4036 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply) 4037 { 4038 char *desc; 4039 4040 switch (mpi_reply->ResponseCode) { 4041 case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE: 4042 desc = "task management request completed"; 4043 break; 4044 case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME: 4045 desc = "invalid frame"; 4046 break; 4047 case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED: 4048 desc = "task management request not supported"; 4049 break; 4050 case MPI2_SCSITASKMGMT_RSP_TM_FAILED: 4051 desc = "task management request failed"; 4052 break; 4053 case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED: 4054 desc = "task management request succeeded"; 4055 break; 4056 case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN: 4057 desc = "invalid lun"; 4058 break; 4059 case 0xA: 4060 desc = "overlapped tag attempted"; 4061 break; 4062 case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC: 4063 desc = "task queued, however not sent to target"; 4064 break; 4065 default: 4066 desc = "unknown"; 4067 break; 4068 } 4069 dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n", 4070 mpi_reply->ResponseCode, desc); 4071 dev_dbg(&instance->pdev->dev, 4072 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo" 4073 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n", 4074 mpi_reply->TerminationCount, mpi_reply->DevHandle, 4075 mpi_reply->Function, mpi_reply->TaskType, 4076 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo); 4077 } 4078 4079 /** 4080 * megasas_issue_tm - main routine for sending tm requests 4081 * @instance: per adapter struct 4082 * @device_handle: device handle 4083 * @channel: the channel assigned by the OS 4084 * @id: the id assigned by the OS 4085 * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c) 4086 * @smid_task: smid assigned to the task 4087 * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF 4088 * Context: user 4089 * 4090 * MegaRaid use MPT interface for Task Magement request. 4091 * A generic API for sending task management requests to firmware. 4092 * 4093 * Return SUCCESS or FAILED. 4094 */ 4095 static int 4096 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle, 4097 uint channel, uint id, u16 smid_task, u8 type) 4098 { 4099 struct MR_TASK_MANAGE_REQUEST *mr_request; 4100 struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request; 4101 unsigned long timeleft; 4102 struct megasas_cmd_fusion *cmd_fusion; 4103 struct megasas_cmd *cmd_mfi; 4104 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc; 4105 struct fusion_context *fusion = NULL; 4106 struct megasas_cmd_fusion *scsi_lookup; 4107 int rc; 4108 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply; 4109 4110 fusion = instance->ctrl_context; 4111 4112 cmd_mfi = megasas_get_cmd(instance); 4113 4114 if (!cmd_mfi) { 4115 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4116 __func__, __LINE__); 4117 return -ENOMEM; 4118 } 4119 4120 cmd_fusion = megasas_get_cmd_fusion(instance, 4121 instance->max_scsi_cmds + cmd_mfi->index); 4122 4123 /* Save the smid. To be used for returning the cmd */ 4124 cmd_mfi->context.smid = cmd_fusion->index; 4125 4126 req_desc = megasas_get_request_descriptor(instance, 4127 (cmd_fusion->index - 1)); 4128 4129 cmd_fusion->request_desc = req_desc; 4130 req_desc->Words = 0; 4131 4132 mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request; 4133 memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST)); 4134 mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest; 4135 mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT; 4136 mpi_request->DevHandle = cpu_to_le16(device_handle); 4137 mpi_request->TaskType = type; 4138 mpi_request->TaskMID = cpu_to_le16(smid_task); 4139 mpi_request->LUN[1] = 0; 4140 4141 4142 req_desc = cmd_fusion->request_desc; 4143 req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index); 4144 req_desc->HighPriority.RequestFlags = 4145 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY << 4146 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT); 4147 req_desc->HighPriority.MSIxIndex = 0; 4148 req_desc->HighPriority.LMID = 0; 4149 req_desc->HighPriority.Reserved1 = 0; 4150 4151 if (channel < MEGASAS_MAX_PD_CHANNELS) 4152 mr_request->tmReqFlags.isTMForPD = 1; 4153 else 4154 mr_request->tmReqFlags.isTMForLD = 1; 4155 4156 init_completion(&cmd_fusion->done); 4157 megasas_fire_cmd_fusion(instance, req_desc); 4158 4159 timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ); 4160 4161 if (!timeleft) { 4162 dev_err(&instance->pdev->dev, 4163 "task mgmt type 0x%x timed out\n", type); 4164 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE; 4165 mutex_unlock(&instance->reset_mutex); 4166 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR); 4167 mutex_lock(&instance->reset_mutex); 4168 return rc; 4169 } 4170 4171 mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply; 4172 megasas_tm_response_code(instance, mpi_reply); 4173 4174 megasas_return_cmd(instance, cmd_mfi); 4175 rc = SUCCESS; 4176 switch (type) { 4177 case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK: 4178 scsi_lookup = fusion->cmd_list[smid_task - 1]; 4179 4180 if (scsi_lookup->scmd == NULL) 4181 break; 4182 else { 4183 instance->instancet->disable_intr(instance); 4184 megasas_sync_irqs((unsigned long)instance); 4185 instance->instancet->enable_intr(instance); 4186 if (scsi_lookup->scmd == NULL) 4187 break; 4188 } 4189 rc = FAILED; 4190 break; 4191 4192 case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET: 4193 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF)) 4194 break; 4195 instance->instancet->disable_intr(instance); 4196 megasas_sync_irqs((unsigned long)instance); 4197 rc = megasas_track_scsiio(instance, id, channel); 4198 instance->instancet->enable_intr(instance); 4199 4200 break; 4201 case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET: 4202 case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK: 4203 break; 4204 default: 4205 rc = FAILED; 4206 break; 4207 } 4208 4209 return rc; 4210 4211 } 4212 4213 /* 4214 * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI 4215 * @instance: per adapter struct 4216 * 4217 * Return Non Zero index, if SMID found in outstanding commands 4218 */ 4219 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd) 4220 { 4221 int i, ret = 0; 4222 struct megasas_instance *instance; 4223 struct megasas_cmd_fusion *cmd_fusion; 4224 struct fusion_context *fusion; 4225 4226 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4227 4228 fusion = instance->ctrl_context; 4229 4230 for (i = 0; i < instance->max_scsi_cmds; i++) { 4231 cmd_fusion = fusion->cmd_list[i]; 4232 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) { 4233 scmd_printk(KERN_NOTICE, scmd, "Abort request is for" 4234 " SMID: %d\n", cmd_fusion->index); 4235 ret = cmd_fusion->index; 4236 break; 4237 } 4238 } 4239 4240 return ret; 4241 } 4242 4243 /* 4244 * megasas_get_tm_devhandle - Get devhandle for TM request 4245 * @sdev- OS provided scsi device 4246 * 4247 * Returns- devhandle/targetID of SCSI device 4248 */ 4249 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev) 4250 { 4251 u16 pd_index = 0; 4252 u32 device_id; 4253 struct megasas_instance *instance; 4254 struct fusion_context *fusion; 4255 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync; 4256 u16 devhandle = (u16)ULONG_MAX; 4257 4258 instance = (struct megasas_instance *)sdev->host->hostdata; 4259 fusion = instance->ctrl_context; 4260 4261 if (!MEGASAS_IS_LOGICAL(sdev)) { 4262 if (instance->use_seqnum_jbod_fp) { 4263 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) 4264 + sdev->id; 4265 pd_sync = (void *)fusion->pd_seq_sync 4266 [(instance->pd_seq_map_id - 1) & 1]; 4267 devhandle = pd_sync->seq[pd_index].devHandle; 4268 } else 4269 sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable" 4270 " without JBOD MAP support from %s %d\n", __func__, __LINE__); 4271 } else { 4272 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) 4273 + sdev->id; 4274 devhandle = device_id; 4275 } 4276 4277 return devhandle; 4278 } 4279 4280 /* 4281 * megasas_task_abort_fusion : SCSI task abort function for fusion adapters 4282 * @scmd : pointer to scsi command object 4283 * 4284 * Return SUCCESS, if command aborted else FAILED 4285 */ 4286 4287 int megasas_task_abort_fusion(struct scsi_cmnd *scmd) 4288 { 4289 struct megasas_instance *instance; 4290 u16 smid, devhandle; 4291 struct fusion_context *fusion; 4292 int ret; 4293 struct MR_PRIV_DEVICE *mr_device_priv_data; 4294 mr_device_priv_data = scmd->device->hostdata; 4295 4296 4297 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4298 fusion = instance->ctrl_context; 4299 4300 scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd); 4301 scsi_print_command(scmd); 4302 4303 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4304 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4305 "SCSI host:%d\n", instance->host->host_no); 4306 ret = FAILED; 4307 return ret; 4308 } 4309 4310 if (!mr_device_priv_data) { 4311 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4312 "scmd(%p)\n", scmd); 4313 scmd->result = DID_NO_CONNECT << 16; 4314 ret = SUCCESS; 4315 goto out; 4316 } 4317 4318 4319 if (!mr_device_priv_data->is_tm_capable) { 4320 ret = FAILED; 4321 goto out; 4322 } 4323 4324 mutex_lock(&instance->reset_mutex); 4325 4326 smid = megasas_fusion_smid_lookup(scmd); 4327 4328 if (!smid) { 4329 ret = SUCCESS; 4330 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is" 4331 " issued is not found in oustanding commands\n"); 4332 mutex_unlock(&instance->reset_mutex); 4333 goto out; 4334 } 4335 4336 devhandle = megasas_get_tm_devhandle(scmd->device); 4337 4338 if (devhandle == (u16)ULONG_MAX) { 4339 ret = SUCCESS; 4340 sdev_printk(KERN_INFO, scmd->device, 4341 "task abort issued for invalid devhandle\n"); 4342 mutex_unlock(&instance->reset_mutex); 4343 goto out; 4344 } 4345 sdev_printk(KERN_INFO, scmd->device, 4346 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n", 4347 scmd, devhandle); 4348 4349 mr_device_priv_data->tm_busy = 1; 4350 ret = megasas_issue_tm(instance, devhandle, 4351 scmd->device->channel, scmd->device->id, smid, 4352 MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK); 4353 mr_device_priv_data->tm_busy = 0; 4354 4355 mutex_unlock(&instance->reset_mutex); 4356 out: 4357 sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n", 4358 ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd); 4359 4360 return ret; 4361 } 4362 4363 /* 4364 * megasas_reset_target_fusion : target reset function for fusion adapters 4365 * scmd: SCSI command pointer 4366 * 4367 * Returns SUCCESS if all commands associated with target aborted else FAILED 4368 */ 4369 4370 int megasas_reset_target_fusion(struct scsi_cmnd *scmd) 4371 { 4372 4373 struct megasas_instance *instance; 4374 int ret = FAILED; 4375 u16 devhandle; 4376 struct fusion_context *fusion; 4377 struct MR_PRIV_DEVICE *mr_device_priv_data; 4378 mr_device_priv_data = scmd->device->hostdata; 4379 4380 instance = (struct megasas_instance *)scmd->device->host->hostdata; 4381 fusion = instance->ctrl_context; 4382 4383 sdev_printk(KERN_INFO, scmd->device, 4384 "target reset called for scmd(%p)\n", scmd); 4385 4386 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) { 4387 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL," 4388 "SCSI host:%d\n", instance->host->host_no); 4389 ret = FAILED; 4390 return ret; 4391 } 4392 4393 if (!mr_device_priv_data) { 4394 sdev_printk(KERN_INFO, scmd->device, "device been deleted! " 4395 "scmd(%p)\n", scmd); 4396 scmd->result = DID_NO_CONNECT << 16; 4397 ret = SUCCESS; 4398 goto out; 4399 } 4400 4401 4402 if (!mr_device_priv_data->is_tm_capable) { 4403 ret = FAILED; 4404 goto out; 4405 } 4406 4407 mutex_lock(&instance->reset_mutex); 4408 devhandle = megasas_get_tm_devhandle(scmd->device); 4409 4410 if (devhandle == (u16)ULONG_MAX) { 4411 ret = SUCCESS; 4412 sdev_printk(KERN_INFO, scmd->device, 4413 "target reset issued for invalid devhandle\n"); 4414 mutex_unlock(&instance->reset_mutex); 4415 goto out; 4416 } 4417 4418 sdev_printk(KERN_INFO, scmd->device, 4419 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n", 4420 scmd, devhandle); 4421 mr_device_priv_data->tm_busy = 1; 4422 ret = megasas_issue_tm(instance, devhandle, 4423 scmd->device->channel, scmd->device->id, 0, 4424 MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET); 4425 mr_device_priv_data->tm_busy = 0; 4426 mutex_unlock(&instance->reset_mutex); 4427 out: 4428 scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n", 4429 (ret == SUCCESS) ? "SUCCESS" : "FAILED"); 4430 4431 return ret; 4432 } 4433 4434 /*SRIOV get other instance in cluster if any*/ 4435 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance) 4436 { 4437 int i; 4438 4439 for (i = 0; i < MAX_MGMT_ADAPTERS; i++) { 4440 if (megasas_mgmt_info.instance[i] && 4441 (megasas_mgmt_info.instance[i] != instance) && 4442 megasas_mgmt_info.instance[i]->requestorId && 4443 megasas_mgmt_info.instance[i]->peerIsPresent && 4444 (memcmp((megasas_mgmt_info.instance[i]->clusterId), 4445 instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0)) 4446 return megasas_mgmt_info.instance[i]; 4447 } 4448 return NULL; 4449 } 4450 4451 /* Check for a second path that is currently UP */ 4452 int megasas_check_mpio_paths(struct megasas_instance *instance, 4453 struct scsi_cmnd *scmd) 4454 { 4455 struct megasas_instance *peer_instance = NULL; 4456 int retval = (DID_REQUEUE << 16); 4457 4458 if (instance->peerIsPresent) { 4459 peer_instance = megasas_get_peer_instance(instance); 4460 if ((peer_instance) && 4461 (atomic_read(&peer_instance->adprecovery) == 4462 MEGASAS_HBA_OPERATIONAL)) 4463 retval = (DID_NO_CONNECT << 16); 4464 } 4465 return retval; 4466 } 4467 4468 /* Core fusion reset function */ 4469 int megasas_reset_fusion(struct Scsi_Host *shost, int reason) 4470 { 4471 int retval = SUCCESS, i, j, convert = 0; 4472 struct megasas_instance *instance; 4473 struct megasas_cmd_fusion *cmd_fusion, *r1_cmd; 4474 struct fusion_context *fusion; 4475 u32 abs_state, status_reg, reset_adapter; 4476 u32 io_timeout_in_crash_mode = 0; 4477 struct scsi_cmnd *scmd_local = NULL; 4478 struct scsi_device *sdev; 4479 4480 instance = (struct megasas_instance *)shost->hostdata; 4481 fusion = instance->ctrl_context; 4482 4483 mutex_lock(&instance->reset_mutex); 4484 4485 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) { 4486 dev_warn(&instance->pdev->dev, "Hardware critical error, " 4487 "returning FAILED for scsi%d.\n", 4488 instance->host->host_no); 4489 mutex_unlock(&instance->reset_mutex); 4490 return FAILED; 4491 } 4492 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); 4493 abs_state = status_reg & MFI_STATE_MASK; 4494 4495 /* IO timeout detected, forcibly put FW in FAULT state */ 4496 if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf && 4497 instance->crash_dump_app_support && reason) { 4498 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, " 4499 "forcibly FAULT Firmware\n"); 4500 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4501 status_reg = readl(&instance->reg_set->doorbell); 4502 writel(status_reg | MFI_STATE_FORCE_OCR, 4503 &instance->reg_set->doorbell); 4504 readl(&instance->reg_set->doorbell); 4505 mutex_unlock(&instance->reset_mutex); 4506 do { 4507 ssleep(3); 4508 io_timeout_in_crash_mode++; 4509 dev_dbg(&instance->pdev->dev, "waiting for [%d] " 4510 "seconds for crash dump collection and OCR " 4511 "to be done\n", (io_timeout_in_crash_mode * 3)); 4512 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) && 4513 (io_timeout_in_crash_mode < 80)); 4514 4515 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) { 4516 dev_info(&instance->pdev->dev, "OCR done for IO " 4517 "timeout case\n"); 4518 retval = SUCCESS; 4519 } else { 4520 dev_info(&instance->pdev->dev, "Controller is not " 4521 "operational after 240 seconds wait for IO " 4522 "timeout case in FW crash dump mode\n do " 4523 "OCR/kill adapter\n"); 4524 retval = megasas_reset_fusion(shost, 0); 4525 } 4526 return retval; 4527 } 4528 4529 if (instance->requestorId && !instance->skip_heartbeat_timer_del) 4530 del_timer_sync(&instance->sriov_heartbeat_timer); 4531 set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4532 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING); 4533 instance->instancet->disable_intr(instance); 4534 megasas_sync_irqs((unsigned long)instance); 4535 4536 /* First try waiting for commands to complete */ 4537 if (megasas_wait_for_outstanding_fusion(instance, reason, 4538 &convert)) { 4539 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT); 4540 dev_warn(&instance->pdev->dev, "resetting fusion " 4541 "adapter scsi%d.\n", instance->host->host_no); 4542 if (convert) 4543 reason = 0; 4544 4545 if (megasas_dbg_lvl & OCR_LOGS) 4546 dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n"); 4547 4548 /* Now return commands back to the OS */ 4549 for (i = 0 ; i < instance->max_scsi_cmds; i++) { 4550 cmd_fusion = fusion->cmd_list[i]; 4551 /*check for extra commands issued by driver*/ 4552 if (instance->adapter_type == VENTURA_SERIES) { 4553 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds]; 4554 megasas_return_cmd_fusion(instance, r1_cmd); 4555 } 4556 scmd_local = cmd_fusion->scmd; 4557 if (cmd_fusion->scmd) { 4558 if (megasas_dbg_lvl & OCR_LOGS) { 4559 sdev_printk(KERN_INFO, 4560 cmd_fusion->scmd->device, "SMID: 0x%x\n", 4561 cmd_fusion->index); 4562 scsi_print_command(cmd_fusion->scmd); 4563 } 4564 4565 scmd_local->result = 4566 megasas_check_mpio_paths(instance, 4567 scmd_local); 4568 if (instance->ldio_threshold && 4569 megasas_cmd_type(scmd_local) == READ_WRITE_LDIO) 4570 atomic_dec(&instance->ldio_outstanding); 4571 megasas_return_cmd_fusion(instance, cmd_fusion); 4572 scsi_dma_unmap(scmd_local); 4573 scmd_local->scsi_done(scmd_local); 4574 } 4575 } 4576 4577 atomic_set(&instance->fw_outstanding, 0); 4578 4579 status_reg = instance->instancet->read_fw_status_reg( 4580 instance->reg_set); 4581 abs_state = status_reg & MFI_STATE_MASK; 4582 reset_adapter = status_reg & MFI_RESET_ADAPTER; 4583 if (instance->disableOnlineCtrlReset || 4584 (abs_state == MFI_STATE_FAULT && !reset_adapter)) { 4585 /* Reset not supported, kill adapter */ 4586 dev_warn(&instance->pdev->dev, "Reset not supported" 4587 ", killing adapter scsi%d.\n", 4588 instance->host->host_no); 4589 megaraid_sas_kill_hba(instance); 4590 instance->skip_heartbeat_timer_del = 1; 4591 retval = FAILED; 4592 goto out; 4593 } 4594 4595 /* Let SR-IOV VF & PF sync up if there was a HB failure */ 4596 if (instance->requestorId && !reason) { 4597 msleep(MEGASAS_OCR_SETTLE_TIME_VF); 4598 goto transition_to_ready; 4599 } 4600 4601 /* Now try to reset the chip */ 4602 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) { 4603 4604 if (instance->instancet->adp_reset 4605 (instance, instance->reg_set)) 4606 continue; 4607 transition_to_ready: 4608 /* Wait for FW to become ready */ 4609 if (megasas_transition_to_ready(instance, 1)) { 4610 dev_warn(&instance->pdev->dev, 4611 "Failed to transition controller to ready for " 4612 "scsi%d.\n", instance->host->host_no); 4613 if (instance->requestorId && !reason) 4614 goto fail_kill_adapter; 4615 else 4616 continue; 4617 } 4618 megasas_reset_reply_desc(instance); 4619 megasas_fusion_update_can_queue(instance, OCR_CONTEXT); 4620 4621 if (megasas_ioc_init_fusion(instance)) { 4622 if (instance->requestorId && !reason) 4623 goto fail_kill_adapter; 4624 else 4625 continue; 4626 } 4627 4628 megasas_refire_mgmt_cmd(instance); 4629 4630 if (megasas_get_ctrl_info(instance)) { 4631 dev_info(&instance->pdev->dev, 4632 "Failed from %s %d\n", 4633 __func__, __LINE__); 4634 megaraid_sas_kill_hba(instance); 4635 retval = FAILED; 4636 goto out; 4637 } 4638 /* Reset load balance info */ 4639 if (fusion->load_balance_info) 4640 memset(fusion->load_balance_info, 0, 4641 (sizeof(struct LD_LOAD_BALANCE_INFO) * 4642 MAX_LOGICAL_DRIVES_EXT)); 4643 4644 if (!megasas_get_map_info(instance)) 4645 megasas_sync_map_info(instance); 4646 4647 megasas_setup_jbod_map(instance); 4648 4649 shost_for_each_device(sdev, shost) 4650 megasas_set_dynamic_target_properties(sdev); 4651 4652 /* reset stream detection array */ 4653 if (instance->adapter_type == VENTURA_SERIES) { 4654 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) { 4655 memset(fusion->stream_detect_by_ld[j], 4656 0, sizeof(struct LD_STREAM_DETECT)); 4657 fusion->stream_detect_by_ld[j]->mru_bit_map 4658 = MR_STREAM_BITMAP; 4659 } 4660 } 4661 4662 clear_bit(MEGASAS_FUSION_IN_RESET, 4663 &instance->reset_flags); 4664 instance->instancet->enable_intr(instance); 4665 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4666 4667 dev_info(&instance->pdev->dev, "Interrupts are enabled and" 4668 " controller is OPERATIONAL for scsi:%d\n", 4669 instance->host->host_no); 4670 4671 /* Restart SR-IOV heartbeat */ 4672 if (instance->requestorId) { 4673 if (!megasas_sriov_start_heartbeat(instance, 0)) 4674 megasas_start_timer(instance); 4675 else 4676 instance->skip_heartbeat_timer_del = 1; 4677 } 4678 4679 if (instance->crash_dump_drv_support && 4680 instance->crash_dump_app_support) 4681 megasas_set_crash_dump_params(instance, 4682 MR_CRASH_BUF_TURN_ON); 4683 else 4684 megasas_set_crash_dump_params(instance, 4685 MR_CRASH_BUF_TURN_OFF); 4686 4687 retval = SUCCESS; 4688 4689 /* Adapter reset completed successfully */ 4690 dev_warn(&instance->pdev->dev, 4691 "Reset successful for scsi%d.\n", 4692 instance->host->host_no); 4693 4694 goto out; 4695 } 4696 fail_kill_adapter: 4697 /* Reset failed, kill the adapter */ 4698 dev_warn(&instance->pdev->dev, "Reset failed, killing " 4699 "adapter scsi%d.\n", instance->host->host_no); 4700 megaraid_sas_kill_hba(instance); 4701 instance->skip_heartbeat_timer_del = 1; 4702 retval = FAILED; 4703 } else { 4704 /* For VF: Restart HB timer if we didn't OCR */ 4705 if (instance->requestorId) { 4706 megasas_start_timer(instance); 4707 } 4708 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4709 instance->instancet->enable_intr(instance); 4710 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL); 4711 } 4712 out: 4713 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags); 4714 mutex_unlock(&instance->reset_mutex); 4715 return retval; 4716 } 4717 4718 /* Fusion Crash dump collection work queue */ 4719 void megasas_fusion_crash_dump_wq(struct work_struct *work) 4720 { 4721 struct megasas_instance *instance = 4722 container_of(work, struct megasas_instance, crash_init); 4723 u32 status_reg; 4724 u8 partial_copy = 0; 4725 4726 4727 status_reg = instance->instancet->read_fw_status_reg(instance->reg_set); 4728 4729 /* 4730 * Allocate host crash buffers to copy data from 1 MB DMA crash buffer 4731 * to host crash buffers 4732 */ 4733 if (instance->drv_buf_index == 0) { 4734 /* Buffer is already allocated for old Crash dump. 4735 * Do OCR and do not wait for crash dump collection 4736 */ 4737 if (instance->drv_buf_alloc) { 4738 dev_info(&instance->pdev->dev, "earlier crash dump is " 4739 "not yet copied by application, ignoring this " 4740 "crash dump and initiating OCR\n"); 4741 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4742 writel(status_reg, 4743 &instance->reg_set->outbound_scratch_pad); 4744 readl(&instance->reg_set->outbound_scratch_pad); 4745 return; 4746 } 4747 megasas_alloc_host_crash_buffer(instance); 4748 dev_info(&instance->pdev->dev, "Number of host crash buffers " 4749 "allocated: %d\n", instance->drv_buf_alloc); 4750 } 4751 4752 /* 4753 * Driver has allocated max buffers, which can be allocated 4754 * and FW has more crash dump data, then driver will 4755 * ignore the data. 4756 */ 4757 if (instance->drv_buf_index >= (instance->drv_buf_alloc)) { 4758 dev_info(&instance->pdev->dev, "Driver is done copying " 4759 "the buffer: %d\n", instance->drv_buf_alloc); 4760 status_reg |= MFI_STATE_CRASH_DUMP_DONE; 4761 partial_copy = 1; 4762 } else { 4763 memcpy(instance->crash_buf[instance->drv_buf_index], 4764 instance->crash_dump_buf, CRASH_DMA_BUF_SIZE); 4765 instance->drv_buf_index++; 4766 status_reg &= ~MFI_STATE_DMADONE; 4767 } 4768 4769 if (status_reg & MFI_STATE_CRASH_DUMP_DONE) { 4770 dev_info(&instance->pdev->dev, "Crash Dump is available,number " 4771 "of copied buffers: %d\n", instance->drv_buf_index); 4772 instance->fw_crash_buffer_size = instance->drv_buf_index; 4773 instance->fw_crash_state = AVAILABLE; 4774 instance->drv_buf_index = 0; 4775 writel(status_reg, &instance->reg_set->outbound_scratch_pad); 4776 readl(&instance->reg_set->outbound_scratch_pad); 4777 if (!partial_copy) 4778 megasas_reset_fusion(instance->host, 0); 4779 } else { 4780 writel(status_reg, &instance->reg_set->outbound_scratch_pad); 4781 readl(&instance->reg_set->outbound_scratch_pad); 4782 } 4783 } 4784 4785 4786 /* Fusion OCR work queue */ 4787 void megasas_fusion_ocr_wq(struct work_struct *work) 4788 { 4789 struct megasas_instance *instance = 4790 container_of(work, struct megasas_instance, work_init); 4791 4792 megasas_reset_fusion(instance->host, 0); 4793 } 4794 4795 /* Allocate fusion context */ 4796 int 4797 megasas_alloc_fusion_context(struct megasas_instance *instance) 4798 { 4799 struct fusion_context *fusion; 4800 4801 instance->ctrl_context = kzalloc(sizeof(struct fusion_context), 4802 GFP_KERNEL); 4803 if (!instance->ctrl_context) { 4804 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4805 __func__, __LINE__); 4806 return -ENOMEM; 4807 } 4808 4809 fusion = instance->ctrl_context; 4810 4811 fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4812 sizeof(LD_SPAN_INFO)); 4813 fusion->log_to_span = 4814 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4815 fusion->log_to_span_pages); 4816 if (!fusion->log_to_span) { 4817 fusion->log_to_span = vzalloc(MAX_LOGICAL_DRIVES_EXT * 4818 sizeof(LD_SPAN_INFO)); 4819 if (!fusion->log_to_span) { 4820 dev_err(&instance->pdev->dev, "Failed from %s %d\n", 4821 __func__, __LINE__); 4822 return -ENOMEM; 4823 } 4824 } 4825 4826 fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT * 4827 sizeof(struct LD_LOAD_BALANCE_INFO)); 4828 fusion->load_balance_info = 4829 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, 4830 fusion->load_balance_info_pages); 4831 if (!fusion->load_balance_info) { 4832 fusion->load_balance_info = vzalloc(MAX_LOGICAL_DRIVES_EXT * 4833 sizeof(struct LD_LOAD_BALANCE_INFO)); 4834 if (!fusion->load_balance_info) 4835 dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, " 4836 "continuing without Load Balance support\n"); 4837 } 4838 4839 return 0; 4840 } 4841 4842 void 4843 megasas_free_fusion_context(struct megasas_instance *instance) 4844 { 4845 struct fusion_context *fusion = instance->ctrl_context; 4846 4847 if (fusion) { 4848 if (fusion->load_balance_info) { 4849 if (is_vmalloc_addr(fusion->load_balance_info)) 4850 vfree(fusion->load_balance_info); 4851 else 4852 free_pages((ulong)fusion->load_balance_info, 4853 fusion->load_balance_info_pages); 4854 } 4855 4856 if (fusion->log_to_span) { 4857 if (is_vmalloc_addr(fusion->log_to_span)) 4858 vfree(fusion->log_to_span); 4859 else 4860 free_pages((ulong)fusion->log_to_span, 4861 fusion->log_to_span_pages); 4862 } 4863 4864 kfree(fusion); 4865 } 4866 } 4867 4868 struct megasas_instance_template megasas_instance_template_fusion = { 4869 .enable_intr = megasas_enable_intr_fusion, 4870 .disable_intr = megasas_disable_intr_fusion, 4871 .clear_intr = megasas_clear_intr_fusion, 4872 .read_fw_status_reg = megasas_read_fw_status_reg_fusion, 4873 .adp_reset = megasas_adp_reset_fusion, 4874 .check_reset = megasas_check_reset_fusion, 4875 .service_isr = megasas_isr_fusion, 4876 .tasklet = megasas_complete_cmd_dpc_fusion, 4877 .init_adapter = megasas_init_adapter_fusion, 4878 .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion, 4879 .issue_dcmd = megasas_issue_dcmd_fusion, 4880 }; 4881