drivers/scsi/megaraid/megaraid_sas_fusion.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Linux MegaRAID driver for SAS based RAID controllers
   4  *
   5  *  Copyright (c) 2009-2013  LSI Corporation
   6  *  Copyright (c) 2013-2016  Avago Technologies
   7  *  Copyright (c) 2016-2018  Broadcom Inc.
   8  *
   9  *  FILE: megaraid_sas_fusion.c
  10  *
  11  *  Authors: Broadcom Inc.
  12  *           Sumant Patro
  13  *           Adam Radford
  14  *           Kashyap Desai <kashyap.desai@broadcom.com>
  15  *           Sumit Saxena <sumit.saxena@broadcom.com>
  16  *
  17  *  Send feedback to: megaraidlinux.pdl@broadcom.com
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/types.h>
  22 #include <linux/pci.h>
  23 #include <linux/list.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/module.h>
  26 #include <linux/spinlock.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/delay.h>
  29 #include <linux/uio.h>
  30 #include <linux/uaccess.h>
  31 #include <linux/fs.h>
  32 #include <linux/compat.h>
  33 #include <linux/blkdev.h>
  34 #include <linux/mutex.h>
  35 #include <linux/poll.h>
  36 #include <linux/vmalloc.h>
  37 #include <linux/workqueue.h>
  38 #include <linux/irq_poll.h>
  39
  40 #include <scsi/scsi.h>
  41 #include <scsi/scsi_cmnd.h>
  42 #include <scsi/scsi_device.h>
  43 #include <scsi/scsi_host.h>
  44 #include <scsi/scsi_dbg.h>
  45 #include <linux/dmi.h>
  46
  47 #include "megaraid_sas_fusion.h"
  48 #include "megaraid_sas.h"
  49
  50
  51 extern void megasas_free_cmds(struct megasas_instance *instance);
  52 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
  53                                            *instance);
  54 extern void
  55 megasas_complete_cmd(struct megasas_instance *instance,
  56                      struct megasas_cmd *cmd, u8 alt_status);
  57 int
  58 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
  59               int seconds);
  60
  61 void
  62 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
  63 int megasas_alloc_cmds(struct megasas_instance *instance);
  64 int
  65 megasas_clear_intr_fusion(struct megasas_instance *instance);
  66 int
  67 megasas_issue_polled(struct megasas_instance *instance,
  68                      struct megasas_cmd *cmd);
  69 void
  70 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
  71
  72 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
  73 void megaraid_sas_kill_hba(struct megasas_instance *instance);
  74
  75 extern u32 megasas_dbg_lvl;
  76 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
  77                                   int initial);
  78 void megasas_start_timer(struct megasas_instance *instance);
  79 extern struct megasas_mgmt_info megasas_mgmt_info;
  80 extern unsigned int resetwaittime;
  81 extern unsigned int dual_qdepth_disable;
  82 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
  83 static void megasas_free_reply_fusion(struct megasas_instance *instance);
  84 static inline
  85 void megasas_configure_queue_sizes(struct megasas_instance *instance);
  86 static void megasas_fusion_crash_dump(struct megasas_instance *instance);
  87 extern u32 megasas_readl(struct megasas_instance *instance,
  88                          const volatile void __iomem *addr);
  89
  90 /**
  91  * megasas_adp_reset_wait_for_ready -   initiate chip reset and wait for
  92  *                                      controller to come to ready state
  93  * @instance -                          adapter's soft state
  94  * @do_adp_reset -                      If true, do a chip reset
  95  * @ocr_context -                       If called from OCR context this will
  96  *                                      be set to 1, else 0
  97  *
  98  * This function initates a chip reset followed by a wait for controller to
  99  * transition to ready state.
 100  * During this, driver will block all access to PCI config space from userspace
 101  */
 102 int
 103 megasas_adp_reset_wait_for_ready(struct megasas_instance *instance,
 104                                  bool do_adp_reset,
 105                                  int ocr_context)
 106 {
 107         int ret = FAILED;
 108
 109         /*
 110          * Block access to PCI config space from userspace
 111          * when diag reset is initiated from driver
 112          */
 113         if (megasas_dbg_lvl & OCR_DEBUG)
 114                 dev_info(&instance->pdev->dev,
 115                          "Block access to PCI config space %s %d\n",
 116                          __func__, __LINE__);
 117
 118         pci_cfg_access_lock(instance->pdev);
 119
 120         if (do_adp_reset) {
 121                 if (instance->instancet->adp_reset
 122                         (instance, instance->reg_set))
 123                         goto out;
 124         }
 125
 126         /* Wait for FW to become ready */
 127         if (megasas_transition_to_ready(instance, ocr_context)) {
 128                 dev_warn(&instance->pdev->dev,
 129                          "Failed to transition controller to ready for scsi%d.\n",
 130                          instance->host->host_no);
 131                 goto out;
 132         }
 133
 134         ret = SUCCESS;
 135 out:
 136         if (megasas_dbg_lvl & OCR_DEBUG)
 137                 dev_info(&instance->pdev->dev,
 138                          "Unlock access to PCI config space %s %d\n",
 139                          __func__, __LINE__);
 140
 141         pci_cfg_access_unlock(instance->pdev);
 142
 143         return ret;
 144 }
 145
 146 /**
 147  * megasas_check_same_4gb_region -      check if allocation
 148  *                                      crosses same 4GB boundary or not
 149  * @instance -                          adapter's soft instance
 150  * start_addr -                 start address of DMA allocation
 151  * size -                               size of allocation in bytes
 152  * return -                             true : allocation does not cross same
 153  *                                      4GB boundary
 154  *                                      false: allocation crosses same
 155  *                                      4GB boundary
 156  */
 157 static inline bool megasas_check_same_4gb_region
 158         (struct megasas_instance *instance, dma_addr_t start_addr, size_t size)
 159 {
 160         dma_addr_t end_addr;
 161
 162         end_addr = start_addr + size;
 163
 164         if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) {
 165                 dev_err(&instance->pdev->dev,
 166                         "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n",
 167                         (unsigned long long)start_addr,
 168                         (unsigned long long)end_addr);
 169                 return false;
 170         }
 171
 172         return true;
 173 }
 174
 175 /**
 176  * megasas_enable_intr_fusion - Enables interrupts
 177  * @regs:                       MFI register set
 178  */
 179 void
 180 megasas_enable_intr_fusion(struct megasas_instance *instance)
 181 {
 182         struct megasas_register_set __iomem *regs;
 183         regs = instance->reg_set;
 184
 185         instance->mask_interrupts = 0;
 186         /* For Thunderbolt/Invader also clear intr on enable */
 187         writel(~0, &regs->outbound_intr_status);
 188         readl(&regs->outbound_intr_status);
 189
 190         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 191
 192         /* Dummy readl to force pci flush */
 193         dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n",
 194                  __func__, readl(&regs->outbound_intr_mask));
 195 }
 196
 197 /**
 198  * megasas_disable_intr_fusion - Disables interrupt
 199  * @regs:                        MFI register set
 200  */
 201 void
 202 megasas_disable_intr_fusion(struct megasas_instance *instance)
 203 {
 204         u32 mask = 0xFFFFFFFF;
 205         struct megasas_register_set __iomem *regs;
 206         regs = instance->reg_set;
 207         instance->mask_interrupts = 1;
 208
 209         writel(mask, &regs->outbound_intr_mask);
 210         /* Dummy readl to force pci flush */
 211         dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n",
 212                  __func__, readl(&regs->outbound_intr_mask));
 213 }
 214
 215 int
 216 megasas_clear_intr_fusion(struct megasas_instance *instance)
 217 {
 218         u32 status;
 219         struct megasas_register_set __iomem *regs;
 220         regs = instance->reg_set;
 221         /*
 222          * Check if it is our interrupt
 223          */
 224         status = megasas_readl(instance,
 225                                &regs->outbound_intr_status);
 226
 227         if (status & 1) {
 228                 writel(status, &regs->outbound_intr_status);
 229                 readl(&regs->outbound_intr_status);
 230                 return 1;
 231         }
 232         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 233                 return 0;
 234
 235         return 1;
 236 }
 237
 238 /**
 239  * megasas_get_cmd_fusion -     Get a command from the free pool
 240  * @instance:           Adapter soft state
 241  *
 242  * Returns a blk_tag indexed mpt frame
 243  */
 244 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 245                                                   *instance, u32 blk_tag)
 246 {
 247         struct fusion_context *fusion;
 248
 249         fusion = instance->ctrl_context;
 250         return fusion->cmd_list[blk_tag];
 251 }
 252
 253 /**
 254  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 255  * @instance:           Adapter soft state
 256  * @cmd:                Command packet to be returned to free command pool
 257  */
 258 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 259         struct megasas_cmd_fusion *cmd)
 260 {
 261         cmd->scmd = NULL;
 262         memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 263         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 264         cmd->cmd_completed = false;
 265 }
 266
 267 /**
 268  * megasas_write_64bit_req_desc -       PCI writes 64bit request descriptor
 269  * @instance:                           Adapter soft state
 270  * @req_desc:                           64bit Request descriptor
 271  */
 272 static void
 273 megasas_write_64bit_req_desc(struct megasas_instance *instance,
 274                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 275 {
 276 #if defined(writeq) && defined(CONFIG_64BIT)
 277         u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
 278                 le32_to_cpu(req_desc->u.low));
 279         writeq(req_data, &instance->reg_set->inbound_low_queue_port);
 280 #else
 281         unsigned long flags;
 282         spin_lock_irqsave(&instance->hba_lock, flags);
 283         writel(le32_to_cpu(req_desc->u.low),
 284                 &instance->reg_set->inbound_low_queue_port);
 285         writel(le32_to_cpu(req_desc->u.high),
 286                 &instance->reg_set->inbound_high_queue_port);
 287         spin_unlock_irqrestore(&instance->hba_lock, flags);
 288 #endif
 289 }
 290
 291 /**
 292  * megasas_fire_cmd_fusion -    Sends command to the FW
 293  * @instance:                   Adapter soft state
 294  * @req_desc:                   32bit or 64bit Request descriptor
 295  *
 296  * Perform PCI Write. AERO SERIES supports 32 bit Descriptor.
 297  * Prior to AERO_SERIES support 64 bit Descriptor.
 298  */
 299 static void
 300 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 301                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 302 {
 303         if (instance->atomic_desc_support)
 304                 writel(le32_to_cpu(req_desc->u.low),
 305                         &instance->reg_set->inbound_single_queue_port);
 306         else
 307                 megasas_write_64bit_req_desc(instance, req_desc);
 308 }
 309
 310 /**
 311  * megasas_fusion_update_can_queue -    Do all Adapter Queue depth related calculations here
 312  * @instance:                                                   Adapter soft state
 313  * fw_boot_context:                                             Whether this function called during probe or after OCR
 314  *
 315  * This function is only for fusion controllers.
 316  * Update host can queue, if firmware downgrade max supported firmware commands.
 317  * Firmware upgrade case will be skiped because underlying firmware has
 318  * more resource than exposed to the OS.
 319  *
 320  */
 321 static void
 322 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
 323 {
 324         u16 cur_max_fw_cmds = 0;
 325         u16 ldio_threshold = 0;
 326         struct megasas_register_set __iomem *reg_set;
 327
 328         reg_set = instance->reg_set;
 329
 330         /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */
 331         if (instance->adapter_type < VENTURA_SERIES)
 332                 cur_max_fw_cmds =
 333                 megasas_readl(instance,
 334                               &instance->reg_set->outbound_scratch_pad_2) & 0x00FFFF;
 335
 336         if (dual_qdepth_disable || !cur_max_fw_cmds)
 337                 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
 338         else
 339                 ldio_threshold =
 340                         (instance->instancet->read_fw_status_reg(instance) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
 341
 342         dev_info(&instance->pdev->dev,
 343                  "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n",
 344                  cur_max_fw_cmds, ldio_threshold);
 345
 346         if (fw_boot_context == OCR_CONTEXT) {
 347                 cur_max_fw_cmds = cur_max_fw_cmds - 1;
 348                 if (cur_max_fw_cmds < instance->max_fw_cmds) {
 349                         instance->cur_can_queue =
 350                                 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
 351                                                 MEGASAS_FUSION_IOCTL_CMDS);
 352                         instance->host->can_queue = instance->cur_can_queue;
 353                         instance->ldio_threshold = ldio_threshold;
 354                 }
 355         } else {
 356                 instance->max_fw_cmds = cur_max_fw_cmds;
 357                 instance->ldio_threshold = ldio_threshold;
 358
 359                 if (reset_devices)
 360                         instance->max_fw_cmds = min(instance->max_fw_cmds,
 361                                                 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
 362                 /*
 363                 * Reduce the max supported cmds by 1. This is to ensure that the
 364                 * reply_q_sz (1 more than the max cmd that driver may send)
 365                 * does not exceed max cmds that the FW can support
 366                 */
 367                 instance->max_fw_cmds = instance->max_fw_cmds-1;
 368         }
 369 }
 370 /**
 371  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
 372  * @instance:           Adapter soft state
 373  */
 374 void
 375 megasas_free_cmds_fusion(struct megasas_instance *instance)
 376 {
 377         int i;
 378         struct fusion_context *fusion = instance->ctrl_context;
 379         struct megasas_cmd_fusion *cmd;
 380
 381         if (fusion->sense)
 382                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 383                               fusion->sense_phys_addr);
 384
 385         /* SG */
 386         if (fusion->cmd_list) {
 387                 for (i = 0; i < instance->max_mpt_cmds; i++) {
 388                         cmd = fusion->cmd_list[i];
 389                         if (cmd) {
 390                                 if (cmd->sg_frame)
 391                                         dma_pool_free(fusion->sg_dma_pool,
 392                                                       cmd->sg_frame,
 393                                                       cmd->sg_frame_phys_addr);
 394                         }
 395                         kfree(cmd);
 396                 }
 397                 kfree(fusion->cmd_list);
 398         }
 399
 400         if (fusion->sg_dma_pool) {
 401                 dma_pool_destroy(fusion->sg_dma_pool);
 402                 fusion->sg_dma_pool = NULL;
 403         }
 404         if (fusion->sense_dma_pool) {
 405                 dma_pool_destroy(fusion->sense_dma_pool);
 406                 fusion->sense_dma_pool = NULL;
 407         }
 408
 409
 410         /* Reply Frame, Desc*/
 411         if (instance->is_rdpq)
 412                 megasas_free_rdpq_fusion(instance);
 413         else
 414                 megasas_free_reply_fusion(instance);
 415
 416         /* Request Frame, Desc*/
 417         if (fusion->req_frames_desc)
 418                 dma_free_coherent(&instance->pdev->dev,
 419                         fusion->request_alloc_sz, fusion->req_frames_desc,
 420                         fusion->req_frames_desc_phys);
 421         if (fusion->io_request_frames)
 422                 dma_pool_free(fusion->io_request_frames_pool,
 423                         fusion->io_request_frames,
 424                         fusion->io_request_frames_phys);
 425         if (fusion->io_request_frames_pool) {
 426                 dma_pool_destroy(fusion->io_request_frames_pool);
 427                 fusion->io_request_frames_pool = NULL;
 428         }
 429 }
 430
 431 /**
 432  * megasas_create_sg_sense_fusion -     Creates DMA pool for cmd frames
 433  * @instance:                   Adapter soft state
 434  *
 435  */
 436 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 437 {
 438         int i;
 439         u16 max_cmd;
 440         struct fusion_context *fusion;
 441         struct megasas_cmd_fusion *cmd;
 442         int sense_sz;
 443         u32 offset;
 444
 445         fusion = instance->ctrl_context;
 446         max_cmd = instance->max_fw_cmds;
 447         sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
 448
 449         fusion->sg_dma_pool =
 450                         dma_pool_create("mr_sg", &instance->pdev->dev,
 451                                 instance->max_chain_frame_sz,
 452                                 MR_DEFAULT_NVME_PAGE_SIZE, 0);
 453         /* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
 454         fusion->sense_dma_pool =
 455                         dma_pool_create("mr_sense", &instance->pdev->dev,
 456                                 sense_sz, 64, 0);
 457
 458         if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
 459                 dev_err(&instance->pdev->dev,
 460                         "Failed from %s %d\n",  __func__, __LINE__);
 461                 return -ENOMEM;
 462         }
 463
 464         fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 465                                        GFP_KERNEL, &fusion->sense_phys_addr);
 466         if (!fusion->sense) {
 467                 dev_err(&instance->pdev->dev,
 468                         "failed from %s %d\n",  __func__, __LINE__);
 469                 return -ENOMEM;
 470         }
 471
 472         /* sense buffer, request frame and reply desc pool requires to be in
 473          * same 4 gb region. Below function will check this.
 474          * In case of failure, new pci pool will be created with updated
 475          * alignment.
 476          * Older allocation and pool will be destroyed.
 477          * Alignment will be used such a way that next allocation if success,
 478          * will always meet same 4gb region requirement.
 479          * Actual requirement is not alignment, but we need start and end of
 480          * DMA address must have same upper 32 bit address.
 481          */
 482
 483         if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
 484                                            sense_sz)) {
 485                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 486                               fusion->sense_phys_addr);
 487                 fusion->sense = NULL;
 488                 dma_pool_destroy(fusion->sense_dma_pool);
 489
 490                 fusion->sense_dma_pool =
 491                         dma_pool_create("mr_sense_align", &instance->pdev->dev,
 492                                         sense_sz, roundup_pow_of_two(sense_sz),
 493                                         0);
 494                 if (!fusion->sense_dma_pool) {
 495                         dev_err(&instance->pdev->dev,
 496                                 "Failed from %s %d\n",  __func__, __LINE__);
 497                         return -ENOMEM;
 498                 }
 499                 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 500                                                GFP_KERNEL,
 501                                                &fusion->sense_phys_addr);
 502                 if (!fusion->sense) {
 503                         dev_err(&instance->pdev->dev,
 504                                 "failed from %s %d\n",  __func__, __LINE__);
 505                         return -ENOMEM;
 506                 }
 507         }
 508
 509         /*
 510          * Allocate and attach a frame to each of the commands in cmd_list
 511          */
 512         for (i = 0; i < max_cmd; i++) {
 513                 cmd = fusion->cmd_list[i];
 514                 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
 515                                         GFP_KERNEL, &cmd->sg_frame_phys_addr);
 516
 517                 offset = SCSI_SENSE_BUFFERSIZE * i;
 518                 cmd->sense = (u8 *)fusion->sense + offset;
 519                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 520
 521                 if (!cmd->sg_frame) {
 522                         dev_err(&instance->pdev->dev,
 523                                 "Failed from %s %d\n",  __func__, __LINE__);
 524                         return -ENOMEM;
 525                 }
 526         }
 527
 528         /* create sense buffer for the raid 1/10 fp */
 529         for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
 530                 cmd = fusion->cmd_list[i];
 531                 offset = SCSI_SENSE_BUFFERSIZE * i;
 532                 cmd->sense = (u8 *)fusion->sense + offset;
 533                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 534
 535         }
 536
 537         return 0;
 538 }
 539
 540 int
 541 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
 542 {
 543         u32 max_mpt_cmd, i, j;
 544         struct fusion_context *fusion;
 545
 546         fusion = instance->ctrl_context;
 547
 548         max_mpt_cmd = instance->max_mpt_cmds;
 549
 550         /*
 551          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
 552          * Allocate the dynamic array first and then allocate individual
 553          * commands.
 554          */
 555         fusion->cmd_list =
 556                 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *),
 557                         GFP_KERNEL);
 558         if (!fusion->cmd_list) {
 559                 dev_err(&instance->pdev->dev,
 560                         "Failed from %s %d\n",  __func__, __LINE__);
 561                 return -ENOMEM;
 562         }
 563
 564         for (i = 0; i < max_mpt_cmd; i++) {
 565                 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
 566                                               GFP_KERNEL);
 567                 if (!fusion->cmd_list[i]) {
 568                         for (j = 0; j < i; j++)
 569                                 kfree(fusion->cmd_list[j]);
 570                         kfree(fusion->cmd_list);
 571                         dev_err(&instance->pdev->dev,
 572                                 "Failed from %s %d\n",  __func__, __LINE__);
 573                         return -ENOMEM;
 574                 }
 575         }
 576
 577         return 0;
 578 }
 579 int
 580 megasas_alloc_request_fusion(struct megasas_instance *instance)
 581 {
 582         struct fusion_context *fusion;
 583
 584         fusion = instance->ctrl_context;
 585
 586 retry_alloc:
 587         fusion->io_request_frames_pool =
 588                         dma_pool_create("mr_ioreq", &instance->pdev->dev,
 589                                 fusion->io_frames_alloc_sz, 16, 0);
 590
 591         if (!fusion->io_request_frames_pool) {
 592                 dev_err(&instance->pdev->dev,
 593                         "Failed from %s %d\n",  __func__, __LINE__);
 594                 return -ENOMEM;
 595         }
 596
 597         fusion->io_request_frames =
 598                         dma_pool_alloc(fusion->io_request_frames_pool,
 599                                 GFP_KERNEL, &fusion->io_request_frames_phys);
 600         if (!fusion->io_request_frames) {
 601                 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
 602                         instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
 603                         dma_pool_destroy(fusion->io_request_frames_pool);
 604                         megasas_configure_queue_sizes(instance);
 605                         goto retry_alloc;
 606                 } else {
 607                         dev_err(&instance->pdev->dev,
 608                                 "Failed from %s %d\n",  __func__, __LINE__);
 609                         return -ENOMEM;
 610                 }
 611         }
 612
 613         if (!megasas_check_same_4gb_region(instance,
 614                                            fusion->io_request_frames_phys,
 615                                            fusion->io_frames_alloc_sz)) {
 616                 dma_pool_free(fusion->io_request_frames_pool,
 617                               fusion->io_request_frames,
 618                               fusion->io_request_frames_phys);
 619                 fusion->io_request_frames = NULL;
 620                 dma_pool_destroy(fusion->io_request_frames_pool);
 621
 622                 fusion->io_request_frames_pool =
 623                         dma_pool_create("mr_ioreq_align",
 624                                         &instance->pdev->dev,
 625                                         fusion->io_frames_alloc_sz,
 626                                         roundup_pow_of_two(fusion->io_frames_alloc_sz),
 627                                         0);
 628
 629                 if (!fusion->io_request_frames_pool) {
 630                         dev_err(&instance->pdev->dev,
 631                                 "Failed from %s %d\n",  __func__, __LINE__);
 632                         return -ENOMEM;
 633                 }
 634
 635                 fusion->io_request_frames =
 636                         dma_pool_alloc(fusion->io_request_frames_pool,
 637                                        GFP_KERNEL,
 638                                        &fusion->io_request_frames_phys);
 639
 640                 if (!fusion->io_request_frames) {
 641                         dev_err(&instance->pdev->dev,
 642                                 "Failed from %s %d\n",  __func__, __LINE__);
 643                         return -ENOMEM;
 644                 }
 645         }
 646
 647         fusion->req_frames_desc =
 648                 dma_alloc_coherent(&instance->pdev->dev,
 649                                    fusion->request_alloc_sz,
 650                                    &fusion->req_frames_desc_phys, GFP_KERNEL);
 651         if (!fusion->req_frames_desc) {
 652                 dev_err(&instance->pdev->dev,
 653                         "Failed from %s %d\n",  __func__, __LINE__);
 654                 return -ENOMEM;
 655         }
 656
 657         return 0;
 658 }
 659
 660 int
 661 megasas_alloc_reply_fusion(struct megasas_instance *instance)
 662 {
 663         int i, count;
 664         struct fusion_context *fusion;
 665         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 666         fusion = instance->ctrl_context;
 667
 668         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 669         fusion->reply_frames_desc_pool =
 670                         dma_pool_create("mr_reply", &instance->pdev->dev,
 671                                 fusion->reply_alloc_sz * count, 16, 0);
 672
 673         if (!fusion->reply_frames_desc_pool) {
 674                 dev_err(&instance->pdev->dev,
 675                         "Failed from %s %d\n",  __func__, __LINE__);
 676                 return -ENOMEM;
 677         }
 678
 679         fusion->reply_frames_desc[0] =
 680                 dma_pool_alloc(fusion->reply_frames_desc_pool,
 681                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
 682         if (!fusion->reply_frames_desc[0]) {
 683                 dev_err(&instance->pdev->dev,
 684                         "Failed from %s %d\n",  __func__, __LINE__);
 685                 return -ENOMEM;
 686         }
 687
 688         if (!megasas_check_same_4gb_region(instance,
 689                                            fusion->reply_frames_desc_phys[0],
 690                                            (fusion->reply_alloc_sz * count))) {
 691                 dma_pool_free(fusion->reply_frames_desc_pool,
 692                               fusion->reply_frames_desc[0],
 693                               fusion->reply_frames_desc_phys[0]);
 694                 fusion->reply_frames_desc[0] = NULL;
 695                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 696
 697                 fusion->reply_frames_desc_pool =
 698                         dma_pool_create("mr_reply_align",
 699                                         &instance->pdev->dev,
 700                                         fusion->reply_alloc_sz * count,
 701                                         roundup_pow_of_two(fusion->reply_alloc_sz * count),
 702                                         0);
 703
 704                 if (!fusion->reply_frames_desc_pool) {
 705                         dev_err(&instance->pdev->dev,
 706                                 "Failed from %s %d\n",  __func__, __LINE__);
 707                         return -ENOMEM;
 708                 }
 709
 710                 fusion->reply_frames_desc[0] =
 711                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 712                                        GFP_KERNEL,
 713                                        &fusion->reply_frames_desc_phys[0]);
 714
 715                 if (!fusion->reply_frames_desc[0]) {
 716                         dev_err(&instance->pdev->dev,
 717                                 "Failed from %s %d\n",  __func__, __LINE__);
 718                         return -ENOMEM;
 719                 }
 720         }
 721
 722         reply_desc = fusion->reply_frames_desc[0];
 723         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 724                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 725
 726         /* This is not a rdpq mode, but driver still populate
 727          * reply_frame_desc array to use same msix index in ISR path.
 728          */
 729         for (i = 0; i < (count - 1); i++)
 730                 fusion->reply_frames_desc[i + 1] =
 731                         fusion->reply_frames_desc[i] +
 732                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
 733
 734         return 0;
 735 }
 736
 737 int
 738 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 739 {
 740         int i, j, k, msix_count;
 741         struct fusion_context *fusion;
 742         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 743         union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
 744         dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
 745         u8 dma_alloc_count, abs_index;
 746         u32 chunk_size, array_size, offset;
 747
 748         fusion = instance->ctrl_context;
 749         chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
 750         array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
 751                      MAX_MSIX_QUEUES_FUSION;
 752
 753         fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev,
 754                                                array_size, &fusion->rdpq_phys,
 755                                                GFP_KERNEL);
 756         if (!fusion->rdpq_virt) {
 757                 dev_err(&instance->pdev->dev,
 758                         "Failed from %s %d\n",  __func__, __LINE__);
 759                 return -ENOMEM;
 760         }
 761
 762         msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 763
 764         fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
 765                                                          &instance->pdev->dev,
 766                                                          chunk_size, 16, 0);
 767         fusion->reply_frames_desc_pool_align =
 768                                 dma_pool_create("mr_rdpq_align",
 769                                                 &instance->pdev->dev,
 770                                                 chunk_size,
 771                                                 roundup_pow_of_two(chunk_size),
 772                                                 0);
 773
 774         if (!fusion->reply_frames_desc_pool ||
 775             !fusion->reply_frames_desc_pool_align) {
 776                 dev_err(&instance->pdev->dev,
 777                         "Failed from %s %d\n",  __func__, __LINE__);
 778                 return -ENOMEM;
 779         }
 780
 781 /*
 782  * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
 783  * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
 784  * within 4GB boundary and also reply queues in a set must have same
 785  * upper 32-bits in their memory address. so here driver is allocating the
 786  * DMA'able memory for reply queues according. Driver uses limitation of
 787  * VENTURA_SERIES to manage INVADER_SERIES as well.
 788  */
 789         dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
 790
 791         for (i = 0; i < dma_alloc_count; i++) {
 792                 rdpq_chunk_virt[i] =
 793                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 794                                        GFP_KERNEL, &rdpq_chunk_phys[i]);
 795                 if (!rdpq_chunk_virt[i]) {
 796                         dev_err(&instance->pdev->dev,
 797                                 "Failed from %s %d\n",  __func__, __LINE__);
 798                         return -ENOMEM;
 799                 }
 800                 /* reply desc pool requires to be in same 4 gb region.
 801                  * Below function will check this.
 802                  * In case of failure, new pci pool will be created with updated
 803                  * alignment.
 804                  * For RDPQ buffers, driver always allocate two separate pci pool.
 805                  * Alignment will be used such a way that next allocation if
 806                  * success, will always meet same 4gb region requirement.
 807                  * rdpq_tracker keep track of each buffer's physical,
 808                  * virtual address and pci pool descriptor. It will help driver
 809                  * while freeing the resources.
 810                  *
 811                  */
 812                 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
 813                                                    chunk_size)) {
 814                         dma_pool_free(fusion->reply_frames_desc_pool,
 815                                       rdpq_chunk_virt[i],
 816                                       rdpq_chunk_phys[i]);
 817
 818                         rdpq_chunk_virt[i] =
 819                                 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
 820                                                GFP_KERNEL, &rdpq_chunk_phys[i]);
 821                         if (!rdpq_chunk_virt[i]) {
 822                                 dev_err(&instance->pdev->dev,
 823                                         "Failed from %s %d\n",
 824                                         __func__, __LINE__);
 825                                 return -ENOMEM;
 826                         }
 827                         fusion->rdpq_tracker[i].dma_pool_ptr =
 828                                         fusion->reply_frames_desc_pool_align;
 829                 } else {
 830                         fusion->rdpq_tracker[i].dma_pool_ptr =
 831                                         fusion->reply_frames_desc_pool;
 832                 }
 833
 834                 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
 835                 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
 836         }
 837
 838         for (k = 0; k < dma_alloc_count; k++) {
 839                 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
 840                         abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
 841
 842                         if (abs_index == msix_count)
 843                                 break;
 844                         offset = fusion->reply_alloc_sz * i;
 845                         fusion->rdpq_virt[abs_index].RDPQBaseAddress =
 846                                         cpu_to_le64(rdpq_chunk_phys[k] + offset);
 847                         fusion->reply_frames_desc_phys[abs_index] =
 848                                         rdpq_chunk_phys[k] + offset;
 849                         fusion->reply_frames_desc[abs_index] =
 850                                         (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
 851
 852                         reply_desc = fusion->reply_frames_desc[abs_index];
 853                         for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
 854                                 reply_desc->Words = ULLONG_MAX;
 855                 }
 856         }
 857
 858         return 0;
 859 }
 860
 861 static void
 862 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 863
 864         int i;
 865         struct fusion_context *fusion;
 866
 867         fusion = instance->ctrl_context;
 868
 869         for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
 870                 if (fusion->rdpq_tracker[i].pool_entry_virt)
 871                         dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
 872                                       fusion->rdpq_tracker[i].pool_entry_virt,
 873                                       fusion->rdpq_tracker[i].pool_entry_phys);
 874
 875         }
 876
 877         dma_pool_destroy(fusion->reply_frames_desc_pool);
 878         dma_pool_destroy(fusion->reply_frames_desc_pool_align);
 879
 880         if (fusion->rdpq_virt)
 881                 dma_free_coherent(&instance->pdev->dev,
 882                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 883                         fusion->rdpq_virt, fusion->rdpq_phys);
 884 }
 885
 886 static void
 887 megasas_free_reply_fusion(struct megasas_instance *instance) {
 888
 889         struct fusion_context *fusion;
 890
 891         fusion = instance->ctrl_context;
 892
 893         if (fusion->reply_frames_desc[0])
 894                 dma_pool_free(fusion->reply_frames_desc_pool,
 895                         fusion->reply_frames_desc[0],
 896                         fusion->reply_frames_desc_phys[0]);
 897
 898         dma_pool_destroy(fusion->reply_frames_desc_pool);
 899
 900 }
 901
 902
 903 /**
 904  * megasas_alloc_cmds_fusion -  Allocates the command packets
 905  * @instance:           Adapter soft state
 906  *
 907  *
 908  * Each frame has a 32-bit field called context. This context is used to get
 909  * back the megasas_cmd_fusion from the frame when a frame gets completed
 910  * In this driver, the 32 bit values are the indices into an array cmd_list.
 911  * This array is used only to look up the megasas_cmd_fusion given the context.
 912  * The free commands themselves are maintained in a linked list called cmd_pool.
 913  *
 914  * cmds are formed in the io_request and sg_frame members of the
 915  * megasas_cmd_fusion. The context field is used to get a request descriptor
 916  * and is used as SMID of the cmd.
 917  * SMID value range is from 1 to max_fw_cmds.
 918  */
 919 int
 920 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 921 {
 922         int i;
 923         struct fusion_context *fusion;
 924         struct megasas_cmd_fusion *cmd;
 925         u32 offset;
 926         dma_addr_t io_req_base_phys;
 927         u8 *io_req_base;
 928
 929
 930         fusion = instance->ctrl_context;
 931
 932         if (megasas_alloc_request_fusion(instance))
 933                 goto fail_exit;
 934
 935         if (instance->is_rdpq) {
 936                 if (megasas_alloc_rdpq_fusion(instance))
 937                         goto fail_exit;
 938         } else
 939                 if (megasas_alloc_reply_fusion(instance))
 940                         goto fail_exit;
 941
 942         if (megasas_alloc_cmdlist_fusion(instance))
 943                 goto fail_exit;
 944
 945         dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
 946                  instance->max_fw_cmds);
 947
 948         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 949         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 950         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 951
 952         /*
 953          * Add all the commands to command pool (fusion->cmd_pool)
 954          */
 955
 956         /* SMID 0 is reserved. Set SMID/index from 1 */
 957         for (i = 0; i < instance->max_mpt_cmds; i++) {
 958                 cmd = fusion->cmd_list[i];
 959                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
 960                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
 961                 cmd->index = i + 1;
 962                 cmd->scmd = NULL;
 963                 cmd->sync_cmd_idx =
 964                 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
 965                                 (i - instance->max_scsi_cmds) :
 966                                 (u32)ULONG_MAX; /* Set to Invalid */
 967                 cmd->instance = instance;
 968                 cmd->io_request =
 969                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
 970                   (io_req_base + offset);
 971                 memset(cmd->io_request, 0,
 972                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 973                 cmd->io_request_phys_addr = io_req_base_phys + offset;
 974                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 975         }
 976
 977         if (megasas_create_sg_sense_fusion(instance))
 978                 goto fail_exit;
 979
 980         return 0;
 981
 982 fail_exit:
 983         megasas_free_cmds_fusion(instance);
 984         return -ENOMEM;
 985 }
 986
 987 /**
 988  * wait_and_poll -      Issues a polling command
 989  * @instance:                   Adapter soft state
 990  * @cmd:                        Command packet to be issued
 991  *
 992  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 993  */
 994 int
 995 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 996         int seconds)
 997 {
 998         int i;
 999         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1000         u32 status_reg;
1001
1002         u32 msecs = seconds * 1000;
1003
1004         /*
1005          * Wait for cmd_status to change
1006          */
1007         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
1008                 rmb();
1009                 msleep(20);
1010                 if (!(i % 5000)) {
1011                         status_reg = instance->instancet->read_fw_status_reg(instance)
1012                                         & MFI_STATE_MASK;
1013                         if (status_reg == MFI_STATE_FAULT)
1014                                 break;
1015                 }
1016         }
1017
1018         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
1019                 return DCMD_TIMEOUT;
1020         else if (frame_hdr->cmd_status == MFI_STAT_OK)
1021                 return DCMD_SUCCESS;
1022         else
1023                 return DCMD_FAILED;
1024 }
1025
1026 /**
1027  * megasas_ioc_init_fusion -    Initializes the FW
1028  * @instance:           Adapter soft state
1029  *
1030  * Issues the IOC Init cmd
1031  */
1032 int
1033 megasas_ioc_init_fusion(struct megasas_instance *instance)
1034 {
1035         struct megasas_init_frame *init_frame;
1036         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
1037         dma_addr_t      ioc_init_handle;
1038         struct megasas_cmd *cmd;
1039         u8 ret, cur_rdpq_mode;
1040         struct fusion_context *fusion;
1041         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
1042         int i;
1043         struct megasas_header *frame_hdr;
1044         const char *sys_info;
1045         MFI_CAPABILITIES *drv_ops;
1046         u32 scratch_pad_1;
1047         ktime_t time;
1048         bool cur_fw_64bit_dma_capable;
1049         bool cur_intr_coalescing;
1050
1051         fusion = instance->ctrl_context;
1052
1053         ioc_init_handle = fusion->ioc_init_request_phys;
1054         IOCInitMessage = fusion->ioc_init_request;
1055
1056         cmd = fusion->ioc_init_cmd;
1057
1058         scratch_pad_1 = megasas_readl
1059                 (instance, &instance->reg_set->outbound_scratch_pad_1);
1060
1061         cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
1062
1063         if (instance->adapter_type == INVADER_SERIES) {
1064                 cur_fw_64bit_dma_capable =
1065                         (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
1066
1067                 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
1068                         dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1069                                 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1070                         megaraid_sas_kill_hba(instance);
1071                         ret = 1;
1072                         goto fail_fw_init;
1073                 }
1074         }
1075
1076         if (instance->is_rdpq && !cur_rdpq_mode) {
1077                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1078                         " from RDPQ mode to non RDPQ mode\n");
1079                 ret = 1;
1080                 goto fail_fw_init;
1081         }
1082
1083         cur_intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
1084                                                         true : false;
1085
1086         if ((instance->low_latency_index_start ==
1087                 MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing)
1088                 instance->perf_mode = MR_BALANCED_PERF_MODE;
1089
1090         dev_info(&instance->pdev->dev, "Performance mode :%s\n",
1091                 MEGASAS_PERF_MODE_2STR(instance->perf_mode));
1092
1093         instance->fw_sync_cache_support = (scratch_pad_1 &
1094                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1095         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1096                  instance->fw_sync_cache_support ? "Yes" : "No");
1097
1098         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1099
1100         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1101         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1102         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1103         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1104         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1105
1106         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1107         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1108                         cpu_to_le64(fusion->rdpq_phys) :
1109                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1110         IOCInitMessage->MsgFlags = instance->is_rdpq ?
1111                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1112         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1113         IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1114         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1115         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1116
1117         time = ktime_get_real();
1118         /* Convert to milliseconds as per FW requirement */
1119         IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1120
1121         init_frame = (struct megasas_init_frame *)cmd->frame;
1122         memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1123
1124         frame_hdr = &cmd->frame->hdr;
1125         frame_hdr->cmd_status = 0xFF;
1126         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1127
1128         init_frame->cmd = MFI_CMD_INIT;
1129         init_frame->cmd_status = 0xFF;
1130
1131         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1132
1133         /* driver support Extended MSIX */
1134         if (instance->adapter_type >= INVADER_SERIES)
1135                 drv_ops->mfi_capabilities.support_additional_msix = 1;
1136         /* driver supports HA / Remote LUN over Fast Path interface */
1137         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1138
1139         drv_ops->mfi_capabilities.support_max_255lds = 1;
1140         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1141         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1142
1143         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1144                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1145
1146         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1147         if (!dual_qdepth_disable)
1148                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1149
1150         drv_ops->mfi_capabilities.support_qd_throttling = 1;
1151         drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1152         drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1153         drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1;
1154
1155         if (instance->consistent_mask_64bit)
1156                 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1157
1158         /* Convert capability to LE32 */
1159         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1160
1161         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1162         if (instance->system_info_buf && sys_info) {
1163                 memcpy(instance->system_info_buf->systemId, sys_info,
1164                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1165                 instance->system_info_buf->systemIdLength =
1166                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1167                 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1168                 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1169         }
1170
1171         init_frame->queue_info_new_phys_addr_hi =
1172                 cpu_to_le32(upper_32_bits(ioc_init_handle));
1173         init_frame->queue_info_new_phys_addr_lo =
1174                 cpu_to_le32(lower_32_bits(ioc_init_handle));
1175         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1176
1177         /*
1178          * Each bit in replyqueue_mask represents one group of MSI-x vectors
1179          * (each group has 8 vectors)
1180          */
1181         switch (instance->perf_mode) {
1182         case MR_BALANCED_PERF_MODE:
1183                 init_frame->replyqueue_mask =
1184                        cpu_to_le16(~(~0 << instance->low_latency_index_start/8));
1185                 break;
1186         case MR_IOPS_PERF_MODE:
1187                 init_frame->replyqueue_mask =
1188                        cpu_to_le16(~(~0 << instance->msix_vectors/8));
1189                 break;
1190         }
1191
1192
1193         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1194         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1195         req_desc.MFAIo.RequestFlags =
1196                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1197                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1198
1199         /*
1200          * disable the intr before firing the init frame
1201          */
1202         instance->instancet->disable_intr(instance);
1203
1204         for (i = 0; i < (10 * 1000); i += 20) {
1205                 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1)
1206                         msleep(20);
1207                 else
1208                         break;
1209         }
1210
1211         /* For AERO also, IOC_INIT requires 64 bit descriptor write */
1212         megasas_write_64bit_req_desc(instance, &req_desc);
1213
1214         wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS);
1215
1216         frame_hdr = &cmd->frame->hdr;
1217         if (frame_hdr->cmd_status != 0) {
1218                 ret = 1;
1219                 goto fail_fw_init;
1220         }
1221
1222         if (instance->adapter_type >= AERO_SERIES) {
1223                 scratch_pad_1 = megasas_readl
1224                         (instance, &instance->reg_set->outbound_scratch_pad_1);
1225
1226                 instance->atomic_desc_support =
1227                         (scratch_pad_1 & MR_ATOMIC_DESCRIPTOR_SUPPORT_OFFSET) ? 1 : 0;
1228
1229                 dev_info(&instance->pdev->dev, "FW supports atomic descriptor\t: %s\n",
1230                         instance->atomic_desc_support ? "Yes" : "No");
1231         }
1232
1233         return 0;
1234
1235 fail_fw_init:
1236         dev_err(&instance->pdev->dev,
1237                 "Init cmd return status FAILED for SCSI host %d\n",
1238                 instance->host->host_no);
1239
1240         return ret;
1241 }
1242
1243 /**
1244  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
1245  * @instance:           Adapter soft state
1246  * @pend:               set to 1, if it is pended jbod map.
1247  *
1248  * Issue Jbod map to the firmware. If it is pended command,
1249  * issue command and return. If it is first instance of jbod map
1250  * issue and receive command.
1251  */
1252 int
1253 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1254         int ret = 0;
1255         size_t pd_seq_map_sz;
1256         struct megasas_cmd *cmd;
1257         struct megasas_dcmd_frame *dcmd;
1258         struct fusion_context *fusion = instance->ctrl_context;
1259         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1260         dma_addr_t pd_seq_h;
1261
1262         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1263         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1264         pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES - 1);
1265
1266         cmd = megasas_get_cmd(instance);
1267         if (!cmd) {
1268                 dev_err(&instance->pdev->dev,
1269                         "Could not get mfi cmd. Fail from %s %d\n",
1270                         __func__, __LINE__);
1271                 return -ENOMEM;
1272         }
1273
1274         dcmd = &cmd->frame->dcmd;
1275
1276         memset(pd_sync, 0, pd_seq_map_sz);
1277         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1278
1279         if (pend) {
1280                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1281                 dcmd->flags = MFI_FRAME_DIR_WRITE;
1282                 instance->jbod_seq_cmd = cmd;
1283         } else {
1284                 dcmd->flags = MFI_FRAME_DIR_READ;
1285         }
1286
1287         dcmd->cmd = MFI_CMD_DCMD;
1288         dcmd->cmd_status = 0xFF;
1289         dcmd->sge_count = 1;
1290         dcmd->timeout = 0;
1291         dcmd->pad_0 = 0;
1292         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1293         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1294
1295         megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1296
1297         if (pend) {
1298                 instance->instancet->issue_dcmd(instance, cmd);
1299                 return 0;
1300         }
1301
1302         /* Below code is only for non pended DCMD */
1303         if (!instance->mask_interrupts)
1304                 ret = megasas_issue_blocked_cmd(instance, cmd,
1305                         MFI_IO_TIMEOUT_SECS);
1306         else
1307                 ret = megasas_issue_polled(instance, cmd);
1308
1309         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1310                 dev_warn(&instance->pdev->dev,
1311                         "driver supports max %d JBOD, but FW reports %d\n",
1312                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1313                 ret = -EINVAL;
1314         }
1315
1316         if (ret == DCMD_TIMEOUT)
1317                 megaraid_sas_kill_hba(instance);
1318
1319         if (ret == DCMD_SUCCESS)
1320                 instance->pd_seq_map_id++;
1321
1322         megasas_return_cmd(instance, cmd);
1323         return ret;
1324 }
1325
1326 /*
1327  * megasas_get_ld_map_info -    Returns FW's ld_map structure
1328  * @instance:                           Adapter soft state
1329  * @pend:                               Pend the command or not
1330  * Issues an internal command (DCMD) to get the FW's controller PD
1331  * list structure.  This information is mainly used to find out SYSTEM
1332  * supported by the FW.
1333  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1334  * dcmd.mbox.b[0]       - number of LDs being sync'd
1335  * dcmd.mbox.b[1]       - 0 - complete command immediately.
1336  *                      - 1 - pend till config change
1337  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1338  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1339  *                              uses extended struct MR_FW_RAID_MAP_EXT
1340  */
1341 static int
1342 megasas_get_ld_map_info(struct megasas_instance *instance)
1343 {
1344         int ret = 0;
1345         struct megasas_cmd *cmd;
1346         struct megasas_dcmd_frame *dcmd;
1347         void *ci;
1348         dma_addr_t ci_h = 0;
1349         u32 size_map_info;
1350         struct fusion_context *fusion;
1351
1352         cmd = megasas_get_cmd(instance);
1353
1354         if (!cmd) {
1355                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1356                 return -ENOMEM;
1357         }
1358
1359         fusion = instance->ctrl_context;
1360
1361         if (!fusion) {
1362                 megasas_return_cmd(instance, cmd);
1363                 return -ENXIO;
1364         }
1365
1366         dcmd = &cmd->frame->dcmd;
1367
1368         size_map_info = fusion->current_map_sz;
1369
1370         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1371         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1372
1373         if (!ci) {
1374                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1375                 megasas_return_cmd(instance, cmd);
1376                 return -ENOMEM;
1377         }
1378
1379         memset(ci, 0, fusion->max_map_sz);
1380         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1381         dcmd->cmd = MFI_CMD_DCMD;
1382         dcmd->cmd_status = 0xFF;
1383         dcmd->sge_count = 1;
1384         dcmd->flags = MFI_FRAME_DIR_READ;
1385         dcmd->timeout = 0;
1386         dcmd->pad_0 = 0;
1387         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1388         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1389
1390         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1391
1392         if (!instance->mask_interrupts)
1393                 ret = megasas_issue_blocked_cmd(instance, cmd,
1394                         MFI_IO_TIMEOUT_SECS);
1395         else
1396                 ret = megasas_issue_polled(instance, cmd);
1397
1398         if (ret == DCMD_TIMEOUT)
1399                 megaraid_sas_kill_hba(instance);
1400
1401         megasas_return_cmd(instance, cmd);
1402
1403         return ret;
1404 }
1405
1406 u8
1407 megasas_get_map_info(struct megasas_instance *instance)
1408 {
1409         struct fusion_context *fusion = instance->ctrl_context;
1410
1411         fusion->fast_path_io = 0;
1412         if (!megasas_get_ld_map_info(instance)) {
1413                 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1414                         fusion->fast_path_io = 1;
1415                         return 0;
1416                 }
1417         }
1418         return 1;
1419 }
1420
1421 /*
1422  * megasas_sync_map_info -      Returns FW's ld_map structure
1423  * @instance:                           Adapter soft state
1424  *
1425  * Issues an internal command (DCMD) to get the FW's controller PD
1426  * list structure.  This information is mainly used to find out SYSTEM
1427  * supported by the FW.
1428  */
1429 int
1430 megasas_sync_map_info(struct megasas_instance *instance)
1431 {
1432         int i;
1433         struct megasas_cmd *cmd;
1434         struct megasas_dcmd_frame *dcmd;
1435         u16 num_lds;
1436         struct fusion_context *fusion;
1437         struct MR_LD_TARGET_SYNC *ci = NULL;
1438         struct MR_DRV_RAID_MAP_ALL *map;
1439         struct MR_LD_RAID  *raid;
1440         struct MR_LD_TARGET_SYNC *ld_sync;
1441         dma_addr_t ci_h = 0;
1442         u32 size_map_info;
1443
1444         cmd = megasas_get_cmd(instance);
1445
1446         if (!cmd) {
1447                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1448                 return -ENOMEM;
1449         }
1450
1451         fusion = instance->ctrl_context;
1452
1453         if (!fusion) {
1454                 megasas_return_cmd(instance, cmd);
1455                 return 1;
1456         }
1457
1458         map = fusion->ld_drv_map[instance->map_id & 1];
1459
1460         num_lds = le16_to_cpu(map->raidMap.ldCount);
1461
1462         dcmd = &cmd->frame->dcmd;
1463
1464         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1465
1466         ci = (struct MR_LD_TARGET_SYNC *)
1467           fusion->ld_map[(instance->map_id - 1) & 1];
1468         memset(ci, 0, fusion->max_map_sz);
1469
1470         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1471
1472         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1473
1474         for (i = 0; i < num_lds; i++, ld_sync++) {
1475                 raid = MR_LdRaidGet(i, map);
1476                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1477                 ld_sync->seqNum = raid->seqNum;
1478         }
1479
1480         size_map_info = fusion->current_map_sz;
1481
1482         dcmd->cmd = MFI_CMD_DCMD;
1483         dcmd->cmd_status = 0xFF;
1484         dcmd->sge_count = 1;
1485         dcmd->flags = MFI_FRAME_DIR_WRITE;
1486         dcmd->timeout = 0;
1487         dcmd->pad_0 = 0;
1488         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1489         dcmd->mbox.b[0] = num_lds;
1490         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1491         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1492
1493         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1494
1495         instance->map_update_cmd = cmd;
1496
1497         instance->instancet->issue_dcmd(instance, cmd);
1498
1499         return 0;
1500 }
1501
1502 /*
1503  * meagasas_display_intel_branding - Display branding string
1504  * @instance: per adapter object
1505  *
1506  * Return nothing.
1507  */
1508 static void
1509 megasas_display_intel_branding(struct megasas_instance *instance)
1510 {
1511         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1512                 return;
1513
1514         switch (instance->pdev->device) {
1515         case PCI_DEVICE_ID_LSI_INVADER:
1516                 switch (instance->pdev->subsystem_device) {
1517                 case MEGARAID_INTEL_RS3DC080_SSDID:
1518                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1519                                 instance->host->host_no,
1520                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1521                         break;
1522                 case MEGARAID_INTEL_RS3DC040_SSDID:
1523                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1524                                 instance->host->host_no,
1525                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1526                         break;
1527                 case MEGARAID_INTEL_RS3SC008_SSDID:
1528                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1529                                 instance->host->host_no,
1530                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1531                         break;
1532                 case MEGARAID_INTEL_RS3MC044_SSDID:
1533                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1534                                 instance->host->host_no,
1535                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1536                         break;
1537                 default:
1538                         break;
1539                 }
1540                 break;
1541         case PCI_DEVICE_ID_LSI_FURY:
1542                 switch (instance->pdev->subsystem_device) {
1543                 case MEGARAID_INTEL_RS3WC080_SSDID:
1544                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1545                                 instance->host->host_no,
1546                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1547                         break;
1548                 case MEGARAID_INTEL_RS3WC040_SSDID:
1549                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1550                                 instance->host->host_no,
1551                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1552                         break;
1553                 default:
1554                         break;
1555                 }
1556                 break;
1557         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1558         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1559                 switch (instance->pdev->subsystem_device) {
1560                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1561                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1562                                 instance->host->host_no,
1563                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1564                         break;
1565                 default:
1566                         break;
1567                 }
1568                 break;
1569         default:
1570                 break;
1571         }
1572 }
1573
1574 /**
1575  * megasas_allocate_raid_maps - Allocate memory for RAID maps
1576  * @instance:                           Adapter soft state
1577  *
1578  * return:                              if success: return 0
1579  *                                      failed:  return -ENOMEM
1580  */
1581 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1582 {
1583         struct fusion_context *fusion;
1584         int i = 0;
1585
1586         fusion = instance->ctrl_context;
1587
1588         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1589
1590         for (i = 0; i < 2; i++) {
1591                 fusion->ld_map[i] = NULL;
1592
1593                 fusion->ld_drv_map[i] = (void *)
1594                         __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1595                                          fusion->drv_map_pages);
1596
1597                 if (!fusion->ld_drv_map[i]) {
1598                         fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1599
1600                         if (!fusion->ld_drv_map[i]) {
1601                                 dev_err(&instance->pdev->dev,
1602                                         "Could not allocate memory for local map"
1603                                         " size requested: %d\n",
1604                                         fusion->drv_map_sz);
1605                                 goto ld_drv_map_alloc_fail;
1606                         }
1607                 }
1608         }
1609
1610         for (i = 0; i < 2; i++) {
1611                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1612                                                        fusion->max_map_sz,
1613                                                        &fusion->ld_map_phys[i],
1614                                                        GFP_KERNEL);
1615                 if (!fusion->ld_map[i]) {
1616                         dev_err(&instance->pdev->dev,
1617                                 "Could not allocate memory for map info %s:%d\n",
1618                                 __func__, __LINE__);
1619                         goto ld_map_alloc_fail;
1620                 }
1621         }
1622
1623         return 0;
1624
1625 ld_map_alloc_fail:
1626         for (i = 0; i < 2; i++) {
1627                 if (fusion->ld_map[i])
1628                         dma_free_coherent(&instance->pdev->dev,
1629                                           fusion->max_map_sz,
1630                                           fusion->ld_map[i],
1631                                           fusion->ld_map_phys[i]);
1632         }
1633
1634 ld_drv_map_alloc_fail:
1635         for (i = 0; i < 2; i++) {
1636                 if (fusion->ld_drv_map[i]) {
1637                         if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1638                                 vfree(fusion->ld_drv_map[i]);
1639                         else
1640                                 free_pages((ulong)fusion->ld_drv_map[i],
1641                                            fusion->drv_map_pages);
1642                 }
1643         }
1644
1645         return -ENOMEM;
1646 }
1647
1648 /**
1649  * megasas_configure_queue_sizes -      Calculate size of request desc queue,
1650  *                                      reply desc queue,
1651  *                                      IO request frame queue, set can_queue.
1652  * @instance:                           Adapter soft state
1653  * @return:                             void
1654  */
1655 static inline
1656 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1657 {
1658         struct fusion_context *fusion;
1659         u16 max_cmd;
1660
1661         fusion = instance->ctrl_context;
1662         max_cmd = instance->max_fw_cmds;
1663
1664         if (instance->adapter_type >= VENTURA_SERIES)
1665                 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1666         else
1667                 instance->max_mpt_cmds = instance->max_fw_cmds;
1668
1669         instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1670         instance->cur_can_queue = instance->max_scsi_cmds;
1671         instance->host->can_queue = instance->cur_can_queue;
1672
1673         fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1674
1675         fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1676                                           instance->max_mpt_cmds;
1677         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1678                                         (fusion->reply_q_depth);
1679         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1680                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1681                  * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1682 }
1683
1684 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1685 {
1686         struct fusion_context *fusion;
1687         struct megasas_cmd *cmd;
1688
1689         fusion = instance->ctrl_context;
1690
1691         cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1692
1693         if (!cmd) {
1694                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1695                         __func__, __LINE__);
1696                 return -ENOMEM;
1697         }
1698
1699         cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1700                                         IOC_INIT_FRAME_SIZE,
1701                                         &cmd->frame_phys_addr, GFP_KERNEL);
1702
1703         if (!cmd->frame) {
1704                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1705                         __func__, __LINE__);
1706                 kfree(cmd);
1707                 return -ENOMEM;
1708         }
1709
1710         fusion->ioc_init_cmd = cmd;
1711         return 0;
1712 }
1713
1714 /**
1715  * megasas_free_ioc_init_cmd -  Free IOC INIT command frame
1716  * @instance:           Adapter soft state
1717  */
1718 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1719 {
1720         struct fusion_context *fusion;
1721
1722         fusion = instance->ctrl_context;
1723
1724         if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1725                 dma_free_coherent(&instance->pdev->dev,
1726                                   IOC_INIT_FRAME_SIZE,
1727                                   fusion->ioc_init_cmd->frame,
1728                                   fusion->ioc_init_cmd->frame_phys_addr);
1729
1730         kfree(fusion->ioc_init_cmd);
1731 }
1732
1733 /**
1734  * megasas_init_adapter_fusion -        Initializes the FW
1735  * @instance:           Adapter soft state
1736  *
1737  * This is the main function for initializing firmware.
1738  */
1739 u32
1740 megasas_init_adapter_fusion(struct megasas_instance *instance)
1741 {
1742         struct fusion_context *fusion;
1743         u32 scratch_pad_1;
1744         int i = 0, count;
1745         u32 status_reg;
1746
1747         fusion = instance->ctrl_context;
1748
1749         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1750
1751         /*
1752          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1753          */
1754         instance->max_mfi_cmds =
1755                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1756
1757         megasas_configure_queue_sizes(instance);
1758
1759         scratch_pad_1 = megasas_readl(instance,
1760                                       &instance->reg_set->outbound_scratch_pad_1);
1761         /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1762          * Firmware support extended IO chain frame which is 4 times more than
1763          * legacy Firmware.
1764          * Legacy Firmware - Frame size is (8 * 128) = 1K
1765          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1766          */
1767         if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1768                 instance->max_chain_frame_sz =
1769                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1770                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1771         else
1772                 instance->max_chain_frame_sz =
1773                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1774                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1775
1776         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1777                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1778                         instance->max_chain_frame_sz,
1779                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1780                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1781         }
1782
1783         fusion->max_sge_in_main_msg =
1784                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1785                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1786
1787         fusion->max_sge_in_chain =
1788                 instance->max_chain_frame_sz
1789                         / sizeof(union MPI2_SGE_IO_UNION);
1790
1791         instance->max_num_sge =
1792                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1793                         + fusion->max_sge_in_chain - 2);
1794
1795         /* Used for pass thru MFI frame (DCMD) */
1796         fusion->chain_offset_mfi_pthru =
1797                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1798
1799         fusion->chain_offset_io_request =
1800                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1801                  sizeof(union MPI2_SGE_IO_UNION))/16;
1802
1803         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1804         for (i = 0 ; i < count; i++)
1805                 fusion->last_reply_idx[i] = 0;
1806
1807         /*
1808          * For fusion adapters, 3 commands for IOCTL and 8 commands
1809          * for driver's internal DCMDs.
1810          */
1811         instance->max_scsi_cmds = instance->max_fw_cmds -
1812                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1813                                 MEGASAS_FUSION_IOCTL_CMDS);
1814         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1815
1816         if (megasas_alloc_ioc_init_frame(instance))
1817                 return 1;
1818
1819         /*
1820          * Allocate memory for descriptors
1821          * Create a pool of commands
1822          */
1823         if (megasas_alloc_cmds(instance))
1824                 goto fail_alloc_mfi_cmds;
1825         if (megasas_alloc_cmds_fusion(instance))
1826                 goto fail_alloc_cmds;
1827
1828         if (megasas_ioc_init_fusion(instance)) {
1829                 status_reg = instance->instancet->read_fw_status_reg(instance);
1830                 if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) &&
1831                     (status_reg & MFI_RESET_ADAPTER)) {
1832                         /* Do a chip reset and then retry IOC INIT once */
1833                         if (megasas_adp_reset_wait_for_ready
1834                                 (instance, true, 0) == FAILED)
1835                                 goto fail_ioc_init;
1836
1837                         if (megasas_ioc_init_fusion(instance))
1838                                 goto fail_ioc_init;
1839                 } else {
1840                         goto fail_ioc_init;
1841                 }
1842         }
1843
1844         megasas_display_intel_branding(instance);
1845         if (megasas_get_ctrl_info(instance)) {
1846                 dev_err(&instance->pdev->dev,
1847                         "Could not get controller info. Fail from %s %d\n",
1848                         __func__, __LINE__);
1849                 goto fail_ioc_init;
1850         }
1851
1852         instance->flag_ieee = 1;
1853         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1854         instance->threshold_reply_count = instance->max_fw_cmds / 4;
1855         fusion->fast_path_io = 0;
1856
1857         if (megasas_allocate_raid_maps(instance))
1858                 goto fail_ioc_init;
1859
1860         if (!megasas_get_map_info(instance))
1861                 megasas_sync_map_info(instance);
1862
1863         return 0;
1864
1865 fail_ioc_init:
1866         megasas_free_cmds_fusion(instance);
1867 fail_alloc_cmds:
1868         megasas_free_cmds(instance);
1869 fail_alloc_mfi_cmds:
1870         megasas_free_ioc_init_cmd(instance);
1871         return 1;
1872 }
1873
1874 /**
1875  * megasas_fault_detect_work    -       Worker function of
1876  *                                      FW fault handling workqueue.
1877  */
1878 static void
1879 megasas_fault_detect_work(struct work_struct *work)
1880 {
1881         struct megasas_instance *instance =
1882                 container_of(work, struct megasas_instance,
1883                              fw_fault_work.work);
1884         u32 fw_state, dma_state, status;
1885
1886         /* Check the fw state */
1887         fw_state = instance->instancet->read_fw_status_reg(instance) &
1888                         MFI_STATE_MASK;
1889
1890         if (fw_state == MFI_STATE_FAULT) {
1891                 dma_state = instance->instancet->read_fw_status_reg(instance) &
1892                                 MFI_STATE_DMADONE;
1893                 /* Start collecting crash, if DMA bit is done */
1894                 if (instance->crash_dump_drv_support &&
1895                     instance->crash_dump_app_support && dma_state) {
1896                         megasas_fusion_crash_dump(instance);
1897                 } else {
1898                         if (instance->unload == 0) {
1899                                 status = megasas_reset_fusion(instance->host, 0);
1900                                 if (status != SUCCESS) {
1901                                         dev_err(&instance->pdev->dev,
1902                                                 "Failed from %s %d, do not re-arm timer\n",
1903                                                 __func__, __LINE__);
1904                                         return;
1905                                 }
1906                         }
1907                 }
1908         }
1909
1910         if (instance->fw_fault_work_q)
1911                 queue_delayed_work(instance->fw_fault_work_q,
1912                         &instance->fw_fault_work,
1913                         msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1914 }
1915
1916 int
1917 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1918 {
1919         /* Check if the Fault WQ is already started */
1920         if (instance->fw_fault_work_q)
1921                 return SUCCESS;
1922
1923         INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1924
1925         snprintf(instance->fault_handler_work_q_name,
1926                  sizeof(instance->fault_handler_work_q_name),
1927                  "poll_megasas%d_status", instance->host->host_no);
1928
1929         instance->fw_fault_work_q =
1930                 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1931         if (!instance->fw_fault_work_q) {
1932                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1933                         __func__, __LINE__);
1934                 return FAILED;
1935         }
1936
1937         queue_delayed_work(instance->fw_fault_work_q,
1938                            &instance->fw_fault_work,
1939                            msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1940
1941         return SUCCESS;
1942 }
1943
1944 void
1945 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
1946 {
1947         struct workqueue_struct *wq;
1948
1949         if (instance->fw_fault_work_q) {
1950                 wq = instance->fw_fault_work_q;
1951                 instance->fw_fault_work_q = NULL;
1952                 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
1953                         flush_workqueue(wq);
1954                 destroy_workqueue(wq);
1955         }
1956 }
1957
1958 /**
1959  * map_cmd_status -     Maps FW cmd status to OS cmd status
1960  * @cmd :               Pointer to cmd
1961  * @status :            status of cmd returned by FW
1962  * @ext_status :        ext status of cmd returned by FW
1963  */
1964
1965 void
1966 map_cmd_status(struct fusion_context *fusion,
1967                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1968                 u32 data_length, u8 *sense)
1969 {
1970         u8 cmd_type;
1971         int resid;
1972
1973         cmd_type = megasas_cmd_type(scmd);
1974         switch (status) {
1975
1976         case MFI_STAT_OK:
1977                 scmd->result = DID_OK << 16;
1978                 break;
1979
1980         case MFI_STAT_SCSI_IO_FAILED:
1981         case MFI_STAT_LD_INIT_IN_PROGRESS:
1982                 scmd->result = (DID_ERROR << 16) | ext_status;
1983                 break;
1984
1985         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1986
1987                 scmd->result = (DID_OK << 16) | ext_status;
1988                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1989                         memset(scmd->sense_buffer, 0,
1990                                SCSI_SENSE_BUFFERSIZE);
1991                         memcpy(scmd->sense_buffer, sense,
1992                                SCSI_SENSE_BUFFERSIZE);
1993                         scmd->result |= DRIVER_SENSE << 24;
1994                 }
1995
1996                 /*
1997                  * If the  IO request is partially completed, then MR FW will
1998                  * update "io_request->DataLength" field with actual number of
1999                  * bytes transferred.Driver will set residual bytes count in
2000                  * SCSI command structure.
2001                  */
2002                 resid = (scsi_bufflen(scmd) - data_length);
2003                 scsi_set_resid(scmd, resid);
2004
2005                 if (resid &&
2006                         ((cmd_type == READ_WRITE_LDIO) ||
2007                         (cmd_type == READ_WRITE_SYSPDIO)))
2008                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
2009                                 " requested/completed 0x%x/0x%x\n",
2010                                 status, scsi_bufflen(scmd), data_length);
2011                 break;
2012
2013         case MFI_STAT_LD_OFFLINE:
2014         case MFI_STAT_DEVICE_NOT_FOUND:
2015                 scmd->result = DID_BAD_TARGET << 16;
2016                 break;
2017         case MFI_STAT_CONFIG_SEQ_MISMATCH:
2018                 scmd->result = DID_IMM_RETRY << 16;
2019                 break;
2020         default:
2021                 scmd->result = DID_ERROR << 16;
2022                 break;
2023         }
2024 }
2025
2026 /**
2027  * megasas_is_prp_possible -
2028  * Checks if native NVMe PRPs can be built for the IO
2029  *
2030  * @instance:           Adapter soft state
2031  * @scmd:               SCSI command from the mid-layer
2032  * @sge_count:          scatter gather element count.
2033  *
2034  * Returns:             true: PRPs can be built
2035  *                      false: IEEE SGLs needs to be built
2036  */
2037 static bool
2038 megasas_is_prp_possible(struct megasas_instance *instance,
2039                         struct scsi_cmnd *scmd, int sge_count)
2040 {
2041         int i;
2042         u32 data_length = 0;
2043         struct scatterlist *sg_scmd;
2044         bool build_prp = false;
2045         u32 mr_nvme_pg_size;
2046
2047         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2048                                 MR_DEFAULT_NVME_PAGE_SIZE);
2049         data_length = scsi_bufflen(scmd);
2050         sg_scmd = scsi_sglist(scmd);
2051
2052         /*
2053          * NVMe uses one PRP for each page (or part of a page)
2054          * look at the data length - if 4 pages or less then IEEE is OK
2055          * if  > 5 pages then we need to build a native SGL
2056          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
2057          * if this first size in the page is >= the residual beyond 4 pages
2058          * then use IEEE, otherwise use native SGL
2059          */
2060
2061         if (data_length > (mr_nvme_pg_size * 5)) {
2062                 build_prp = true;
2063         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
2064                         (data_length <= (mr_nvme_pg_size * 5)))  {
2065                 /* check if 1st SG entry size is < residual beyond 4 pages */
2066                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
2067                         build_prp = true;
2068         }
2069
2070 /*
2071  * Below code detects gaps/holes in IO data buffers.
2072  * What does holes/gaps mean?
2073  * Any SGE except first one in a SGL starts at non NVME page size
2074  * aligned address OR Any SGE except last one in a SGL ends at
2075  * non NVME page size boundary.
2076  *
2077  * Driver has already informed block layer by setting boundary rules for
2078  * bio merging done at NVME page size boundary calling kernel API
2079  * blk_queue_virt_boundary inside slave_config.
2080  * Still there is possibility of IO coming with holes to driver because of
2081  * IO merging done by IO scheduler.
2082  *
2083  * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
2084  * IO scheduling so no IO merging.
2085  *
2086  * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
2087  * then sending IOs with holes.
2088  *
2089  * Though driver can request block layer to disable IO merging by calling-
2090  * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
2091  * user may tune sysfs parameter- nomerges again to 0 or 1.
2092  *
2093  * If in future IO scheduling is enabled with SCSI BLK MQ,
2094  * this algorithm to detect holes will be required in driver
2095  * for SCSI BLK MQ enabled case as well.
2096  *
2097  *
2098  */
2099         scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
2100                 if ((i != 0) && (i != (sge_count - 1))) {
2101                         if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
2102                             mega_mod64(sg_dma_address(sg_scmd),
2103                                        mr_nvme_pg_size)) {
2104                                 build_prp = false;
2105                                 break;
2106                         }
2107                 }
2108
2109                 if ((sge_count > 1) && (i == 0)) {
2110                         if ((mega_mod64((sg_dma_address(sg_scmd) +
2111                                         sg_dma_len(sg_scmd)),
2112                                         mr_nvme_pg_size))) {
2113                                 build_prp = false;
2114                                 break;
2115                         }
2116                 }
2117
2118                 if ((sge_count > 1) && (i == (sge_count - 1))) {
2119                         if (mega_mod64(sg_dma_address(sg_scmd),
2120                                        mr_nvme_pg_size)) {
2121                                 build_prp = false;
2122                                 break;
2123                         }
2124                 }
2125         }
2126
2127         return build_prp;
2128 }
2129
2130 /**
2131  * megasas_make_prp_nvme -
2132  * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
2133  *
2134  * @instance:           Adapter soft state
2135  * @scmd:               SCSI command from the mid-layer
2136  * @sgl_ptr:            SGL to be filled in
2137  * @cmd:                Fusion command frame
2138  * @sge_count:          scatter gather element count.
2139  *
2140  * Returns:             true: PRPs are built
2141  *                      false: IEEE SGLs needs to be built
2142  */
2143 static bool
2144 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
2145                       struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2146                       struct megasas_cmd_fusion *cmd, int sge_count)
2147 {
2148         int sge_len, offset, num_prp_in_chain = 0;
2149         struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
2150         u64 *ptr_sgl;
2151         dma_addr_t ptr_sgl_phys;
2152         u64 sge_addr;
2153         u32 page_mask, page_mask_result;
2154         struct scatterlist *sg_scmd;
2155         u32 first_prp_len;
2156         bool build_prp = false;
2157         int data_len = scsi_bufflen(scmd);
2158         u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2159                                         MR_DEFAULT_NVME_PAGE_SIZE);
2160
2161         build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
2162
2163         if (!build_prp)
2164                 return false;
2165
2166         /*
2167          * Nvme has a very convoluted prp format.  One prp is required
2168          * for each page or partial page. Driver need to split up OS sg_list
2169          * entries if it is longer than one page or cross a page
2170          * boundary.  Driver also have to insert a PRP list pointer entry as
2171          * the last entry in each physical page of the PRP list.
2172          *
2173          * NOTE: The first PRP "entry" is actually placed in the first
2174          * SGL entry in the main message as IEEE 64 format.  The 2nd
2175          * entry in the main message is the chain element, and the rest
2176          * of the PRP entries are built in the contiguous pcie buffer.
2177          */
2178         page_mask = mr_nvme_pg_size - 1;
2179         ptr_sgl = (u64 *)cmd->sg_frame;
2180         ptr_sgl_phys = cmd->sg_frame_phys_addr;
2181         memset(ptr_sgl, 0, instance->max_chain_frame_sz);
2182
2183         /* Build chain frame element which holds all prps except first*/
2184         main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
2185             ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
2186
2187         main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2188         main_chain_element->NextChainOffset = 0;
2189         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2190                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
2191                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2192
2193         /* Build first prp, sge need not to be page aligned*/
2194         ptr_first_sgl = sgl_ptr;
2195         sg_scmd = scsi_sglist(scmd);
2196         sge_addr = sg_dma_address(sg_scmd);
2197         sge_len = sg_dma_len(sg_scmd);
2198
2199         offset = (u32)(sge_addr & page_mask);
2200         first_prp_len = mr_nvme_pg_size - offset;
2201
2202         ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2203         ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2204
2205         data_len -= first_prp_len;
2206
2207         if (sge_len > first_prp_len) {
2208                 sge_addr += first_prp_len;
2209                 sge_len -= first_prp_len;
2210         } else if (sge_len == first_prp_len) {
2211                 sg_scmd = sg_next(sg_scmd);
2212                 sge_addr = sg_dma_address(sg_scmd);
2213                 sge_len = sg_dma_len(sg_scmd);
2214         }
2215
2216         for (;;) {
2217                 offset = (u32)(sge_addr & page_mask);
2218
2219                 /* Put PRP pointer due to page boundary*/
2220                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2221                 if (unlikely(!page_mask_result)) {
2222                         scmd_printk(KERN_NOTICE,
2223                                     scmd, "page boundary ptr_sgl: 0x%p\n",
2224                                     ptr_sgl);
2225                         ptr_sgl_phys += 8;
2226                         *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2227                         ptr_sgl++;
2228                         num_prp_in_chain++;
2229                 }
2230
2231                 *ptr_sgl = cpu_to_le64(sge_addr);
2232                 ptr_sgl++;
2233                 ptr_sgl_phys += 8;
2234                 num_prp_in_chain++;
2235
2236                 sge_addr += mr_nvme_pg_size;
2237                 sge_len -= mr_nvme_pg_size;
2238                 data_len -= mr_nvme_pg_size;
2239
2240                 if (data_len <= 0)
2241                         break;
2242
2243                 if (sge_len > 0)
2244                         continue;
2245
2246                 sg_scmd = sg_next(sg_scmd);
2247                 sge_addr = sg_dma_address(sg_scmd);
2248                 sge_len = sg_dma_len(sg_scmd);
2249         }
2250
2251         main_chain_element->Length =
2252                         cpu_to_le32(num_prp_in_chain * sizeof(u64));
2253
2254         return build_prp;
2255 }
2256
2257 /**
2258  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
2259  * @instance:           Adapter soft state
2260  * @scp:                SCSI command from the mid-layer
2261  * @sgl_ptr:            SGL to be filled in
2262  * @cmd:                cmd we are working on
2263  * @sge_count           sge count
2264  *
2265  */
2266 static void
2267 megasas_make_sgl_fusion(struct megasas_instance *instance,
2268                         struct scsi_cmnd *scp,
2269                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2270                         struct megasas_cmd_fusion *cmd, int sge_count)
2271 {
2272         int i, sg_processed;
2273         struct scatterlist *os_sgl;
2274         struct fusion_context *fusion;
2275
2276         fusion = instance->ctrl_context;
2277
2278         if (instance->adapter_type >= INVADER_SERIES) {
2279                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2280                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2281                 sgl_ptr_end->Flags = 0;
2282         }
2283
2284         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2285                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2286                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2287                 sgl_ptr->Flags = 0;
2288                 if (instance->adapter_type >= INVADER_SERIES)
2289                         if (i == sge_count - 1)
2290                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2291                 sgl_ptr++;
2292                 sg_processed = i + 1;
2293
2294                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
2295                     (sge_count > fusion->max_sge_in_main_msg)) {
2296
2297                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2298                         if (instance->adapter_type >= INVADER_SERIES) {
2299                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2300                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2301                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2302                                         cmd->io_request->ChainOffset =
2303                                                 fusion->
2304                                                 chain_offset_io_request;
2305                                 else
2306                                         cmd->io_request->ChainOffset = 0;
2307                         } else
2308                                 cmd->io_request->ChainOffset =
2309                                         fusion->chain_offset_io_request;
2310
2311                         sg_chain = sgl_ptr;
2312                         /* Prepare chain element */
2313                         sg_chain->NextChainOffset = 0;
2314                         if (instance->adapter_type >= INVADER_SERIES)
2315                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2316                         else
2317                                 sg_chain->Flags =
2318                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2319                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2320                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2321                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2322
2323                         sgl_ptr =
2324                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2325                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2326                 }
2327         }
2328 }
2329
2330 /**
2331  * megasas_make_sgl -   Build Scatter Gather List(SGLs)
2332  * @scp:                SCSI command pointer
2333  * @instance:           Soft instance of controller
2334  * @cmd:                Fusion command pointer
2335  *
2336  * This function will build sgls based on device type.
2337  * For nvme drives, there is different way of building sgls in nvme native
2338  * format- PRPs(Physical Region Page).
2339  *
2340  * Returns the number of sg lists actually used, zero if the sg lists
2341  * is NULL, or -ENOMEM if the mapping failed
2342  */
2343 static
2344 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2345                      struct megasas_cmd_fusion *cmd)
2346 {
2347         int sge_count;
2348         bool build_prp = false;
2349         struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2350
2351         sge_count = scsi_dma_map(scp);
2352
2353         if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2354                 return sge_count;
2355
2356         sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2357         if ((le16_to_cpu(cmd->io_request->IoFlags) &
2358             MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2359             (cmd->pd_interface == NVME_PD))
2360                 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2361                                                   cmd, sge_count);
2362
2363         if (!build_prp)
2364                 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2365                                         cmd, sge_count);
2366
2367         return sge_count;
2368 }
2369
2370 /**
2371  * megasas_set_pd_lba - Sets PD LBA
2372  * @cdb:                CDB
2373  * @cdb_len:            cdb length
2374  * @start_blk:          Start block of IO
2375  *
2376  * Used to set the PD LBA in CDB for FP IOs
2377  */
2378 void
2379 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2380                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2381                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2382 {
2383         struct MR_LD_RAID *raid;
2384         u16 ld;
2385         u64 start_blk = io_info->pdBlock;
2386         u8 *cdb = io_request->CDB.CDB32;
2387         u32 num_blocks = io_info->numBlocks;
2388         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2389
2390         /* Check if T10 PI (DIF) is enabled for this LD */
2391         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2392         raid = MR_LdRaidGet(ld, local_map_ptr);
2393         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2394                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2395                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2396                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
2397
2398                 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2399                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2400                 else
2401                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2402                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2403
2404                 /* LBA */
2405                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2406                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2407                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2408                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2409                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2410                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2411                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2412                 cdb[19] = (u8)(start_blk & 0xff);
2413
2414                 /* Logical block reference tag */
2415                 io_request->CDB.EEDP32.PrimaryReferenceTag =
2416                         cpu_to_be32(ref_tag);
2417                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2418                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2419
2420                 /* Transfer length */
2421                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2422                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2423                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2424                 cdb[31] = (u8)(num_blocks & 0xff);
2425
2426                 /* set SCSI IO EEDPFlags */
2427                 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2428                         io_request->EEDPFlags = cpu_to_le16(
2429                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
2430                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2431                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2432                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2433                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2434                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2435                 } else {
2436                         io_request->EEDPFlags = cpu_to_le16(
2437                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2438                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2439                 }
2440                 io_request->Control |= cpu_to_le32((0x4 << 26));
2441                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2442         } else {
2443                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2444                 if (((cdb_len == 12) || (cdb_len == 16)) &&
2445                     (start_blk <= 0xffffffff)) {
2446                         if (cdb_len == 16) {
2447                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2448                                 flagvals = cdb[1];
2449                                 groupnum = cdb[14];
2450                                 control = cdb[15];
2451                         } else {
2452                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2453                                 flagvals = cdb[1];
2454                                 groupnum = cdb[10];
2455                                 control = cdb[11];
2456                         }
2457
2458                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2459
2460                         cdb[0] = opcode;
2461                         cdb[1] = flagvals;
2462                         cdb[6] = groupnum;
2463                         cdb[9] = control;
2464
2465                         /* Transfer length */
2466                         cdb[8] = (u8)(num_blocks & 0xff);
2467                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2468
2469                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2470                         cdb_len = 10;
2471                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2472                         /* Convert to 16 byte CDB for large LBA's */
2473                         switch (cdb_len) {
2474                         case 6:
2475                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2476                                 control = cdb[5];
2477                                 break;
2478                         case 10:
2479                                 opcode =
2480                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
2481                                 flagvals = cdb[1];
2482                                 groupnum = cdb[6];
2483                                 control = cdb[9];
2484                                 break;
2485                         case 12:
2486                                 opcode =
2487                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
2488                                 flagvals = cdb[1];
2489                                 groupnum = cdb[10];
2490                                 control = cdb[11];
2491                                 break;
2492                         }
2493
2494                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2495
2496                         cdb[0] = opcode;
2497                         cdb[1] = flagvals;
2498                         cdb[14] = groupnum;
2499                         cdb[15] = control;
2500
2501                         /* Transfer length */
2502                         cdb[13] = (u8)(num_blocks & 0xff);
2503                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2504                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2505                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2506
2507                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2508                         cdb_len = 16;
2509                 }
2510
2511                 /* Normal case, just load LBA here */
2512                 switch (cdb_len) {
2513                 case 6:
2514                 {
2515                         u8 val = cdb[1] & 0xE0;
2516                         cdb[3] = (u8)(start_blk & 0xff);
2517                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
2518                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2519                         break;
2520                 }
2521                 case 10:
2522                         cdb[5] = (u8)(start_blk & 0xff);
2523                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2524                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2525                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2526                         break;
2527                 case 12:
2528                         cdb[5]    = (u8)(start_blk & 0xff);
2529                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2530                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2531                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2532                         break;
2533                 case 16:
2534                         cdb[9]    = (u8)(start_blk & 0xff);
2535                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2536                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2537                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2538                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2539                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2540                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2541                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2542                         break;
2543                 }
2544         }
2545 }
2546
2547 /**
2548  * megasas_stream_detect -      stream detection on read and and write IOs
2549  * @instance:           Adapter soft state
2550  * @cmd:                    Command to be prepared
2551  * @io_info:            IO Request info
2552  *
2553  */
2554
2555 /** stream detection on read and and write IOs */
2556 static void megasas_stream_detect(struct megasas_instance *instance,
2557                                   struct megasas_cmd_fusion *cmd,
2558                                   struct IO_REQUEST_INFO *io_info)
2559 {
2560         struct fusion_context *fusion = instance->ctrl_context;
2561         u32 device_id = io_info->ldTgtId;
2562         struct LD_STREAM_DETECT *current_ld_sd
2563                 = fusion->stream_detect_by_ld[device_id];
2564         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2565         u32 shifted_values, unshifted_values;
2566         u32 index_value_mask, shifted_values_mask;
2567         int i;
2568         bool is_read_ahead = false;
2569         struct STREAM_DETECT *current_sd;
2570         /* find possible stream */
2571         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2572                 stream_num = (*track_stream >>
2573                         (i * BITS_PER_INDEX_STREAM)) &
2574                         STREAM_MASK;
2575                 current_sd = &current_ld_sd->stream_track[stream_num];
2576                 /* if we found a stream, update the raid
2577                  *  context and also update the mruBitMap
2578                  */
2579                 /*      boundary condition */
2580                 if ((current_sd->next_seq_lba) &&
2581                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2582                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2583                     (current_sd->is_read == io_info->isRead)) {
2584
2585                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2586                             ((!io_info->isRead) || (!is_read_ahead)))
2587                                 /*
2588                                  * Once the API availible we need to change this.
2589                                  * At this point we are not allowing any gap
2590                                  */
2591                                 continue;
2592
2593                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2594                         current_sd->next_seq_lba =
2595                         io_info->ldStartBlock + io_info->numBlocks;
2596                         /*
2597                          *      update the mruBitMap LRU
2598                          */
2599                         shifted_values_mask =
2600                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2601                         shifted_values = ((*track_stream & shifted_values_mask)
2602                                                 << BITS_PER_INDEX_STREAM);
2603                         index_value_mask =
2604                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2605                         unshifted_values =
2606                                 *track_stream & ~(shifted_values_mask |
2607                                 index_value_mask);
2608                         *track_stream =
2609                                 unshifted_values | shifted_values | stream_num;
2610                         return;
2611                 }
2612         }
2613         /*
2614          * if we did not find any stream, create a new one
2615          * from the least recently used
2616          */
2617         stream_num = (*track_stream >>
2618                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2619                 STREAM_MASK;
2620         current_sd = &current_ld_sd->stream_track[stream_num];
2621         current_sd->is_read = io_info->isRead;
2622         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2623         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2624         return;
2625 }
2626
2627 /**
2628  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2629  * affinity (cpu of the controller) and raid_flags in the raid context
2630  * based on IO type.
2631  *
2632  * @praid_context:      IO RAID context
2633  * @raid:               LD raid map
2634  * @fp_possible:        Is fast path possible?
2635  * @is_read:            Is read IO?
2636  *
2637  */
2638 static void
2639 megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion,
2640                                 union RAID_CONTEXT_UNION *praid_context,
2641                                 struct MR_LD_RAID *raid, bool fp_possible,
2642                                 u8 is_read, u32 scsi_buff_len)
2643 {
2644         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2645         struct RAID_CONTEXT_G35 *rctx_g35;
2646
2647         rctx_g35 = &praid_context->raid_context_g35;
2648         if (fp_possible) {
2649                 if (is_read) {
2650                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2651                             (raid->cpuAffinity.pdRead.cpu1))
2652                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2653                         else if (raid->cpuAffinity.pdRead.cpu1)
2654                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2655                 } else {
2656                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2657                             (raid->cpuAffinity.pdWrite.cpu1))
2658                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2659                         else if (raid->cpuAffinity.pdWrite.cpu1)
2660                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2661                         /* Fast path cache by pass capable R0/R1 VD */
2662                         if ((raid->level <= 1) &&
2663                             (raid->capability.fp_cache_bypass_capable)) {
2664                                 rctx_g35->routing_flags |=
2665                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2666                                 rctx_g35->raid_flags =
2667                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2668                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2669                         }
2670                 }
2671         } else {
2672                 if (is_read) {
2673                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2674                             (raid->cpuAffinity.ldRead.cpu1))
2675                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2676                         else if (raid->cpuAffinity.ldRead.cpu1)
2677                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2678                 } else {
2679                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2680                             (raid->cpuAffinity.ldWrite.cpu1))
2681                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2682                         else if (raid->cpuAffinity.ldWrite.cpu1)
2683                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2684
2685                         if (is_stream_detected(rctx_g35) &&
2686                             ((raid->level == 5) || (raid->level == 6)) &&
2687                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2688                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2689                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2690                 }
2691         }
2692
2693         rctx_g35->routing_flags |=
2694                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2695
2696         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2697          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2698          * IO Subtype is not bitmap.
2699          */
2700         if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) &&
2701                         (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) {
2702                 praid_context->raid_context_g35.raid_flags =
2703                         (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2704                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2705         }
2706 }
2707
2708 /**
2709  * megasas_build_ldio_fusion -  Prepares IOs to devices
2710  * @instance:           Adapter soft state
2711  * @scp:                SCSI command
2712  * @cmd:                Command to be prepared
2713  *
2714  * Prepares the io_request and chain elements (sg_frame) for IO
2715  * The IO can be for PD (Fast Path) or LD
2716  */
2717 void
2718 megasas_build_ldio_fusion(struct megasas_instance *instance,
2719                           struct scsi_cmnd *scp,
2720                           struct megasas_cmd_fusion *cmd)
2721 {
2722         bool fp_possible;
2723         u16 ld;
2724         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2725         u32 scsi_buff_len;
2726         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2727         struct IO_REQUEST_INFO io_info;
2728         struct fusion_context *fusion;
2729         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2730         u8 *raidLUN;
2731         unsigned long spinlock_flags;
2732         struct MR_LD_RAID *raid = NULL;
2733         struct MR_PRIV_DEVICE *mrdev_priv;
2734         struct RAID_CONTEXT *rctx;
2735         struct RAID_CONTEXT_G35 *rctx_g35;
2736
2737         device_id = MEGASAS_DEV_INDEX(scp);
2738
2739         fusion = instance->ctrl_context;
2740
2741         io_request = cmd->io_request;
2742         rctx = &io_request->RaidContext.raid_context;
2743         rctx_g35 = &io_request->RaidContext.raid_context_g35;
2744
2745         rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2746         rctx->status = 0;
2747         rctx->ex_status = 0;
2748
2749         start_lba_lo = 0;
2750         start_lba_hi = 0;
2751         fp_possible = false;
2752
2753         /*
2754          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2755          */
2756         if (scp->cmd_len == 6) {
2757                 datalength = (u32) scp->cmnd[4];
2758                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2759                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2760
2761                 start_lba_lo &= 0x1FFFFF;
2762         }
2763
2764         /*
2765          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2766          */
2767         else if (scp->cmd_len == 10) {
2768                 datalength = (u32) scp->cmnd[8] |
2769                         ((u32) scp->cmnd[7] << 8);
2770                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2771                         ((u32) scp->cmnd[3] << 16) |
2772                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2773         }
2774
2775         /*
2776          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2777          */
2778         else if (scp->cmd_len == 12) {
2779                 datalength = ((u32) scp->cmnd[6] << 24) |
2780                         ((u32) scp->cmnd[7] << 16) |
2781                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2782                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2783                         ((u32) scp->cmnd[3] << 16) |
2784                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2785         }
2786
2787         /*
2788          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2789          */
2790         else if (scp->cmd_len == 16) {
2791                 datalength = ((u32) scp->cmnd[10] << 24) |
2792                         ((u32) scp->cmnd[11] << 16) |
2793                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2794                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2795                         ((u32) scp->cmnd[7] << 16) |
2796                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2797
2798                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2799                         ((u32) scp->cmnd[3] << 16) |
2800                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2801         }
2802
2803         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2804         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2805         io_info.numBlocks = datalength;
2806         io_info.ldTgtId = device_id;
2807         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2808         scsi_buff_len = scsi_bufflen(scp);
2809         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2810         io_info.data_arms = 1;
2811
2812         if (scp->sc_data_direction == DMA_FROM_DEVICE)
2813                 io_info.isRead = 1;
2814
2815         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2816         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2817
2818         if (ld < instance->fw_supported_vd_count)
2819                 raid = MR_LdRaidGet(ld, local_map_ptr);
2820
2821         if (!raid || (!fusion->fast_path_io)) {
2822                 rctx->reg_lock_flags  = 0;
2823                 fp_possible = false;
2824         } else {
2825                 if (MR_BuildRaidContext(instance, &io_info, rctx,
2826                                         local_map_ptr, &raidLUN))
2827                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2828         }
2829
2830         if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
2831                 atomic_read(&scp->device->device_busy) >
2832                 (io_info.data_arms * MR_DEVICE_HIGH_IOPS_DEPTH))
2833                 cmd->request_desc->SCSIIO.MSIxIndex =
2834                         mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) /
2835                                 MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start);
2836         else if (instance->msix_load_balance)
2837                 cmd->request_desc->SCSIIO.MSIxIndex =
2838                         (mega_mod64(atomic64_add_return(1, &instance->total_io_count),
2839                                     instance->msix_vectors));
2840         else
2841                 cmd->request_desc->SCSIIO.MSIxIndex =
2842                         instance->reply_map[raw_smp_processor_id()];
2843
2844         if (instance->adapter_type >= VENTURA_SERIES) {
2845                 /* FP for Optimal raid level 1.
2846                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2847                  * are built by the driver as LD I/Os.
2848                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2849                  * (there is never a reason to process these as buffered writes)
2850                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2851                  * with the SLD bit asserted.
2852                  */
2853                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2854                         mrdev_priv = scp->device->hostdata;
2855
2856                         if (atomic_inc_return(&instance->fw_outstanding) >
2857                                 (instance->host->can_queue)) {
2858                                 fp_possible = false;
2859                                 atomic_dec(&instance->fw_outstanding);
2860                         } else if (fusion->pcie_bw_limitation &&
2861                                 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2862                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) {
2863                                 fp_possible = false;
2864                                 atomic_dec(&instance->fw_outstanding);
2865                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2866                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2867                                                    instance->r1_ldio_hint_default);
2868                         }
2869                 }
2870
2871                 if (!fp_possible ||
2872                     (io_info.isRead && io_info.ra_capable)) {
2873                         spin_lock_irqsave(&instance->stream_lock,
2874                                           spinlock_flags);
2875                         megasas_stream_detect(instance, cmd, &io_info);
2876                         spin_unlock_irqrestore(&instance->stream_lock,
2877                                                spinlock_flags);
2878                         /* In ventura if stream detected for a read and it is
2879                          * read ahead capable make this IO as LDIO
2880                          */
2881                         if (is_stream_detected(rctx_g35))
2882                                 fp_possible = false;
2883                 }
2884
2885                 /* If raid is NULL, set CPU affinity to default CPU0 */
2886                 if (raid)
2887                         megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext,
2888                                 raid, fp_possible, io_info.isRead,
2889                                 scsi_buff_len);
2890                 else
2891                         rctx_g35->routing_flags |=
2892                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2893         }
2894
2895         if (fp_possible) {
2896                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2897                                    local_map_ptr, start_lba_lo);
2898                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2899                 cmd->request_desc->SCSIIO.RequestFlags =
2900                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2901                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2902                 if (instance->adapter_type == INVADER_SERIES) {
2903                         rctx->type = MPI2_TYPE_CUDA;
2904                         rctx->nseg = 0x1;
2905                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2906                         rctx->reg_lock_flags |=
2907                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2908                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2909                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2910                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2911                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2912                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2913                         io_request->IoFlags |=
2914                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2915                 }
2916                 if (fusion->load_balance_info &&
2917                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2918                         (io_info.isRead)) {
2919                         io_info.devHandle =
2920                                 get_updated_dev_handle(instance,
2921                                         &fusion->load_balance_info[device_id],
2922                                         &io_info, local_map_ptr);
2923                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2924                         cmd->pd_r1_lb = io_info.pd_after_lb;
2925                         if (instance->adapter_type >= VENTURA_SERIES)
2926                                 rctx_g35->span_arm = io_info.span_arm;
2927                         else
2928                                 rctx->span_arm = io_info.span_arm;
2929
2930                 } else
2931                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2932
2933                 if (instance->adapter_type >= VENTURA_SERIES)
2934                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2935                 else
2936                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2937
2938                 if ((raidLUN[0] == 1) &&
2939                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2940                         instance->dev_handle = !(instance->dev_handle);
2941                         io_info.devHandle =
2942                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2943                 }
2944
2945                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2946                 io_request->DevHandle = io_info.devHandle;
2947                 cmd->pd_interface = io_info.pd_interface;
2948                 /* populate the LUN field */
2949                 memcpy(io_request->LUN, raidLUN, 8);
2950         } else {
2951                 rctx->timeout_value =
2952                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2953                 cmd->request_desc->SCSIIO.RequestFlags =
2954                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2955                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2956                 if (instance->adapter_type == INVADER_SERIES) {
2957                         if (io_info.do_fp_rlbypass ||
2958                         (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2959                                 cmd->request_desc->SCSIIO.RequestFlags =
2960                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2961                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2962                         rctx->type = MPI2_TYPE_CUDA;
2963                         rctx->reg_lock_flags |=
2964                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2965                                         MR_RL_FLAGS_SEQ_NUM_ENABLE);
2966                         rctx->nseg = 0x1;
2967                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2968                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2969                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2970                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2971                 }
2972                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2973                 io_request->DevHandle = cpu_to_le16(device_id);
2974
2975         } /* Not FP */
2976 }
2977
2978 /**
2979  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2980  * @instance:           Adapter soft state
2981  * @scp:                SCSI command
2982  * @cmd:                Command to be prepared
2983  *
2984  * Prepares the io_request frame for non-rw io cmds for vd.
2985  */
2986 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2987                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2988 {
2989         u32 device_id;
2990         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2991         u16 ld;
2992         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2993         struct fusion_context *fusion = instance->ctrl_context;
2994         u8                          span, physArm;
2995         __le16                      devHandle;
2996         u32                         arRef, pd;
2997         struct MR_LD_RAID                  *raid;
2998         struct RAID_CONTEXT                *pRAID_Context;
2999         u8 fp_possible = 1;
3000
3001         io_request = cmd->io_request;
3002         device_id = MEGASAS_DEV_INDEX(scmd);
3003         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
3004         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3005         /* get RAID_Context pointer */
3006         pRAID_Context = &io_request->RaidContext.raid_context;
3007         /* Check with FW team */
3008         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3009         pRAID_Context->reg_lock_row_lba    = 0;
3010         pRAID_Context->reg_lock_length    = 0;
3011
3012         if (fusion->fast_path_io && (
3013                 device_id < instance->fw_supported_vd_count)) {
3014
3015                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
3016                 if (ld >= instance->fw_supported_vd_count - 1)
3017                         fp_possible = 0;
3018                 else {
3019                         raid = MR_LdRaidGet(ld, local_map_ptr);
3020                         if (!(raid->capability.fpNonRWCapable))
3021                                 fp_possible = 0;
3022                 }
3023         } else
3024                 fp_possible = 0;
3025
3026         if (!fp_possible) {
3027                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3028                 io_request->DevHandle = cpu_to_le16(device_id);
3029                 io_request->LUN[1] = scmd->device->lun;
3030                 pRAID_Context->timeout_value =
3031                         cpu_to_le16 (scmd->request->timeout / HZ);
3032                 cmd->request_desc->SCSIIO.RequestFlags =
3033                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3034                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3035         } else {
3036
3037                 /* set RAID context values */
3038                 pRAID_Context->config_seq_num = raid->seqNum;
3039                 if (instance->adapter_type < VENTURA_SERIES)
3040                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
3041                 pRAID_Context->timeout_value =
3042                         cpu_to_le16(raid->fpIoTimeoutForLd);
3043
3044                 /* get the DevHandle for the PD (since this is
3045                    fpNonRWCapable, this is a single disk RAID0) */
3046                 span = physArm = 0;
3047                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
3048                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
3049                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
3050
3051                 /* build request descriptor */
3052                 cmd->request_desc->SCSIIO.RequestFlags =
3053                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3054                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3055                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
3056
3057                 /* populate the LUN field */
3058                 memcpy(io_request->LUN, raid->LUN, 8);
3059
3060                 /* build the raidScsiIO structure */
3061                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3062                 io_request->DevHandle = devHandle;
3063         }
3064 }
3065
3066 /**
3067  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
3068  * @instance:           Adapter soft state
3069  * @scp:                SCSI command
3070  * @cmd:                Command to be prepared
3071  * @fp_possible:        parameter to detect fast path or firmware path io.
3072  *
3073  * Prepares the io_request frame for rw/non-rw io cmds for syspds
3074  */
3075 static void
3076 megasas_build_syspd_fusion(struct megasas_instance *instance,
3077         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
3078         bool fp_possible)
3079 {
3080         u32 device_id;
3081         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
3082         u16 pd_index = 0;
3083         u16 os_timeout_value;
3084         u16 timeout_limit;
3085         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
3086         struct RAID_CONTEXT     *pRAID_Context;
3087         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3088         struct MR_PRIV_DEVICE *mr_device_priv_data;
3089         struct fusion_context *fusion = instance->ctrl_context;
3090         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
3091
3092         device_id = MEGASAS_DEV_INDEX(scmd);
3093         pd_index = MEGASAS_PD_INDEX(scmd);
3094         os_timeout_value = scmd->request->timeout / HZ;
3095         mr_device_priv_data = scmd->device->hostdata;
3096         cmd->pd_interface = mr_device_priv_data->interface_type;
3097
3098         io_request = cmd->io_request;
3099         /* get RAID_Context pointer */
3100         pRAID_Context = &io_request->RaidContext.raid_context;
3101         pRAID_Context->reg_lock_flags = 0;
3102         pRAID_Context->reg_lock_row_lba = 0;
3103         pRAID_Context->reg_lock_length = 0;
3104         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3105         io_request->LUN[1] = scmd->device->lun;
3106         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
3107                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
3108
3109         /* If FW supports PD sequence number */
3110         if (instance->support_seqnum_jbod_fp) {
3111                 if (instance->use_seqnum_jbod_fp &&
3112                         instance->pd_list[pd_index].driveType == TYPE_DISK) {
3113
3114                         /* More than 256 PD/JBOD support for Ventura */
3115                         if (instance->support_morethan256jbod)
3116                                 pRAID_Context->virtual_disk_tgt_id =
3117                                         pd_sync->seq[pd_index].pd_target_id;
3118                         else
3119                                 pRAID_Context->virtual_disk_tgt_id =
3120                                         cpu_to_le16(device_id +
3121                                         (MAX_PHYSICAL_DEVICES - 1));
3122                         pRAID_Context->config_seq_num =
3123                                 pd_sync->seq[pd_index].seqNum;
3124                         io_request->DevHandle =
3125                                 pd_sync->seq[pd_index].devHandle;
3126                         if (instance->adapter_type >= VENTURA_SERIES) {
3127                                 io_request->RaidContext.raid_context_g35.routing_flags |=
3128                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3129                                 io_request->RaidContext.raid_context_g35.nseg_type |=
3130                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
3131                                 io_request->RaidContext.raid_context_g35.nseg_type |=
3132                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3133                         } else {
3134                                 pRAID_Context->type = MPI2_TYPE_CUDA;
3135                                 pRAID_Context->nseg = 0x1;
3136                                 pRAID_Context->reg_lock_flags |=
3137                                         (MR_RL_FLAGS_SEQ_NUM_ENABLE |
3138                                          MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3139                         }
3140                 } else {
3141                         pRAID_Context->virtual_disk_tgt_id =
3142                                 cpu_to_le16(device_id +
3143                                 (MAX_PHYSICAL_DEVICES - 1));
3144                         pRAID_Context->config_seq_num = 0;
3145                         io_request->DevHandle = cpu_to_le16(0xFFFF);
3146                 }
3147         } else {
3148                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3149                 pRAID_Context->config_seq_num = 0;
3150
3151                 if (fusion->fast_path_io) {
3152                         local_map_ptr =
3153                                 fusion->ld_drv_map[(instance->map_id & 1)];
3154                         io_request->DevHandle =
3155                                 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3156                 } else {
3157                         io_request->DevHandle = cpu_to_le16(0xFFFF);
3158                 }
3159         }
3160
3161         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3162
3163         if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
3164                 atomic_read(&scmd->device->device_busy) > MR_DEVICE_HIGH_IOPS_DEPTH)
3165                 cmd->request_desc->SCSIIO.MSIxIndex =
3166                         mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) /
3167                                 MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start);
3168         else if (instance->msix_load_balance)
3169                 cmd->request_desc->SCSIIO.MSIxIndex =
3170                         (mega_mod64(atomic64_add_return(1, &instance->total_io_count),
3171                                     instance->msix_vectors));
3172         else
3173                 cmd->request_desc->SCSIIO.MSIxIndex =
3174                         instance->reply_map[raw_smp_processor_id()];
3175
3176         if (!fp_possible) {
3177                 /* system pd firmware path */
3178                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3179                 cmd->request_desc->SCSIIO.RequestFlags =
3180                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3181                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3182                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3183                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3184         } else {
3185                 if (os_timeout_value)
3186                         os_timeout_value++;
3187
3188                 /* system pd Fast Path */
3189                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3190                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3191                                 255 : 0xFFFF;
3192                 pRAID_Context->timeout_value =
3193                         cpu_to_le16((os_timeout_value > timeout_limit) ?
3194                         timeout_limit : os_timeout_value);
3195                 if (instance->adapter_type >= INVADER_SERIES)
3196                         io_request->IoFlags |=
3197                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3198
3199                 cmd->request_desc->SCSIIO.RequestFlags =
3200                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3201                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3202         }
3203 }
3204
3205 /**
3206  * megasas_build_io_fusion -    Prepares IOs to devices
3207  * @instance:           Adapter soft state
3208  * @scp:                SCSI command
3209  * @cmd:                Command to be prepared
3210  *
3211  * Invokes helper functions to prepare request frames
3212  * and sets flags appropriate for IO/Non-IO cmd
3213  */
3214 int
3215 megasas_build_io_fusion(struct megasas_instance *instance,
3216                         struct scsi_cmnd *scp,
3217                         struct megasas_cmd_fusion *cmd)
3218 {
3219         int sge_count;
3220         u8  cmd_type;
3221         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3222         struct MR_PRIV_DEVICE *mr_device_priv_data;
3223         mr_device_priv_data = scp->device->hostdata;
3224
3225         /* Zero out some fields so they don't get reused */
3226         memset(io_request->LUN, 0x0, 8);
3227         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3228         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3229         io_request->EEDPFlags = 0;
3230         io_request->Control = 0;
3231         io_request->EEDPBlockSize = 0;
3232         io_request->ChainOffset = 0;
3233         io_request->RaidContext.raid_context.raid_flags = 0;
3234         io_request->RaidContext.raid_context.type = 0;
3235         io_request->RaidContext.raid_context.nseg = 0;
3236
3237         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3238         /*
3239          * Just the CDB length,rest of the Flags are zero
3240          * This will be modified for FP in build_ldio_fusion
3241          */
3242         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3243
3244         switch (cmd_type = megasas_cmd_type(scp)) {
3245         case READ_WRITE_LDIO:
3246                 megasas_build_ldio_fusion(instance, scp, cmd);
3247                 break;
3248         case NON_READ_WRITE_LDIO:
3249                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3250                 break;
3251         case READ_WRITE_SYSPDIO:
3252                 megasas_build_syspd_fusion(instance, scp, cmd, true);
3253                 break;
3254         case NON_READ_WRITE_SYSPDIO:
3255                 if (instance->secure_jbod_support ||
3256                     mr_device_priv_data->is_tm_capable)
3257                         megasas_build_syspd_fusion(instance, scp, cmd, false);
3258                 else
3259                         megasas_build_syspd_fusion(instance, scp, cmd, true);
3260                 break;
3261         default:
3262                 break;
3263         }
3264
3265         /*
3266          * Construct SGL
3267          */
3268
3269         sge_count = megasas_make_sgl(instance, scp, cmd);
3270
3271         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3272                 dev_err(&instance->pdev->dev,
3273                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
3274                         __func__, __LINE__, sge_count, instance->max_num_sge);
3275                 return 1;
3276         }
3277
3278         if (instance->adapter_type >= VENTURA_SERIES) {
3279                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3280                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3281                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3282         } else {
3283                 /* numSGE store lower 8 bit of sge_count.
3284                  * numSGEExt store higher 8 bit of sge_count
3285                  */
3286                 io_request->RaidContext.raid_context.num_sge = sge_count;
3287                 io_request->RaidContext.raid_context.num_sge_ext =
3288                         (u8)(sge_count >> 8);
3289         }
3290
3291         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3292
3293         if (scp->sc_data_direction == DMA_TO_DEVICE)
3294                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3295         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3296                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3297
3298         io_request->SGLOffset0 =
3299                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3300
3301         io_request->SenseBufferLowAddress =
3302                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3303         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3304
3305         cmd->scmd = scp;
3306         scp->SCp.ptr = (char *)cmd;
3307
3308         return 0;
3309 }
3310
3311 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3312 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3313 {
3314         u8 *p;
3315         struct fusion_context *fusion;
3316
3317         fusion = instance->ctrl_context;
3318         p = fusion->req_frames_desc +
3319                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3320
3321         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3322 }
3323
3324
3325 /* megasas_prepate_secondRaid1_IO
3326  *  It prepares the raid 1 second IO
3327  */
3328 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3329                             struct megasas_cmd_fusion *cmd,
3330                             struct megasas_cmd_fusion *r1_cmd)
3331 {
3332         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3333         struct fusion_context *fusion;
3334         fusion = instance->ctrl_context;
3335         req_desc = cmd->request_desc;
3336         /* copy the io request frame as well as 8 SGEs data for r1 command*/
3337         memcpy(r1_cmd->io_request, cmd->io_request,
3338                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3339         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3340                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3341         /*sense buffer is different for r1 command*/
3342         r1_cmd->io_request->SenseBufferLowAddress =
3343                         cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3344         r1_cmd->scmd = cmd->scmd;
3345         req_desc2 = megasas_get_request_descriptor(instance,
3346                                                    (r1_cmd->index - 1));
3347         req_desc2->Words = 0;
3348         r1_cmd->request_desc = req_desc2;
3349         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3350         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3351         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3352         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3353         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3354         cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3355                         cpu_to_le16(r1_cmd->index);
3356         r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3357                         cpu_to_le16(cmd->index);
3358         /*MSIxIndex of both commands request descriptors should be same*/
3359         r1_cmd->request_desc->SCSIIO.MSIxIndex =
3360                         cmd->request_desc->SCSIIO.MSIxIndex;
3361         /*span arm is different for r1 cmd*/
3362         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3363                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3364 }
3365
3366 /**
3367  * megasas_build_and_issue_cmd_fusion -Main routine for building and
3368  *                                     issuing non IOCTL cmd
3369  * @instance:                   Adapter soft state
3370  * @scmd:                       pointer to scsi cmd from OS
3371  */
3372 static u32
3373 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3374                                    struct scsi_cmnd *scmd)
3375 {
3376         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3377         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3378         u32 index;
3379
3380         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3381                 instance->ldio_threshold &&
3382                 (atomic_inc_return(&instance->ldio_outstanding) >
3383                 instance->ldio_threshold)) {
3384                 atomic_dec(&instance->ldio_outstanding);
3385                 return SCSI_MLQUEUE_DEVICE_BUSY;
3386         }
3387
3388         if (atomic_inc_return(&instance->fw_outstanding) >
3389                         instance->host->can_queue) {
3390                 atomic_dec(&instance->fw_outstanding);
3391                 return SCSI_MLQUEUE_HOST_BUSY;
3392         }
3393
3394         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3395
3396         if (!cmd) {
3397                 atomic_dec(&instance->fw_outstanding);
3398                 return SCSI_MLQUEUE_HOST_BUSY;
3399         }
3400
3401         index = cmd->index;
3402
3403         req_desc = megasas_get_request_descriptor(instance, index-1);
3404
3405         req_desc->Words = 0;
3406         cmd->request_desc = req_desc;
3407
3408         if (megasas_build_io_fusion(instance, scmd, cmd)) {
3409                 megasas_return_cmd_fusion(instance, cmd);
3410                 dev_err(&instance->pdev->dev, "Error building command\n");
3411                 cmd->request_desc = NULL;
3412                 atomic_dec(&instance->fw_outstanding);
3413                 return SCSI_MLQUEUE_HOST_BUSY;
3414         }
3415
3416         req_desc = cmd->request_desc;
3417         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3418
3419         if (cmd->io_request->ChainOffset != 0 &&
3420             cmd->io_request->ChainOffset != 0xF)
3421                 dev_err(&instance->pdev->dev, "The chain offset value is not "
3422                        "correct : %x\n", cmd->io_request->ChainOffset);
3423         /*
3424          *      if it is raid 1/10 fp write capable.
3425          *      try to get second command from pool and construct it.
3426          *      From FW, it has confirmed that lba values of two PDs
3427          *      corresponds to single R1/10 LD are always same
3428          *
3429          */
3430         /*      driver side count always should be less than max_fw_cmds
3431          *      to get new command
3432          */
3433         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3434                 r1_cmd = megasas_get_cmd_fusion(instance,
3435                                 (scmd->request->tag + instance->max_fw_cmds));
3436                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3437         }
3438
3439
3440         /*
3441          * Issue the command to the FW
3442          */
3443
3444         megasas_fire_cmd_fusion(instance, req_desc);
3445
3446         if (r1_cmd)
3447                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3448
3449
3450         return 0;
3451 }
3452
3453 /**
3454  * megasas_complete_r1_command -
3455  * completes R1 FP write commands which has valid peer smid
3456  * @instance:                   Adapter soft state
3457  * @cmd_fusion:                 MPT command frame
3458  *
3459  */
3460 static inline void
3461 megasas_complete_r1_command(struct megasas_instance *instance,
3462                             struct megasas_cmd_fusion *cmd)
3463 {
3464         u8 *sense, status, ex_status;
3465         u32 data_length;
3466         u16 peer_smid;
3467         struct fusion_context *fusion;
3468         struct megasas_cmd_fusion *r1_cmd = NULL;
3469         struct scsi_cmnd *scmd_local = NULL;
3470         struct RAID_CONTEXT_G35 *rctx_g35;
3471
3472         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3473         fusion = instance->ctrl_context;
3474         peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid);
3475
3476         r1_cmd = fusion->cmd_list[peer_smid - 1];
3477         scmd_local = cmd->scmd;
3478         status = rctx_g35->status;
3479         ex_status = rctx_g35->ex_status;
3480         data_length = cmd->io_request->DataLength;
3481         sense = cmd->sense;
3482
3483         cmd->cmd_completed = true;
3484
3485         /* Check if peer command is completed or not*/
3486         if (r1_cmd->cmd_completed) {
3487                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3488                 if (rctx_g35->status != MFI_STAT_OK) {
3489                         status = rctx_g35->status;
3490                         ex_status = rctx_g35->ex_status;
3491                         data_length = r1_cmd->io_request->DataLength;
3492                         sense = r1_cmd->sense;
3493                 }
3494
3495                 megasas_return_cmd_fusion(instance, r1_cmd);
3496                 map_cmd_status(fusion, scmd_local, status, ex_status,
3497                                le32_to_cpu(data_length), sense);
3498                 if (instance->ldio_threshold &&
3499                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3500                         atomic_dec(&instance->ldio_outstanding);
3501                 scmd_local->SCp.ptr = NULL;
3502                 megasas_return_cmd_fusion(instance, cmd);
3503                 scsi_dma_unmap(scmd_local);
3504                 scmd_local->scsi_done(scmd_local);
3505         }
3506 }
3507
3508 /**
3509  * complete_cmd_fusion -        Completes command
3510  * @instance:                   Adapter soft state
3511  * Completes all commands that is in reply descriptor queue
3512  */
3513 int
3514 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex,
3515                     struct megasas_irq_context *irq_context)
3516 {
3517         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3518         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3519         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3520         struct fusion_context *fusion;
3521         struct megasas_cmd *cmd_mfi;
3522         struct megasas_cmd_fusion *cmd_fusion;
3523         u16 smid, num_completed;
3524         u8 reply_descript_type, *sense, status, extStatus;
3525         u32 device_id, data_length;
3526         union desc_value d_val;
3527         struct LD_LOAD_BALANCE_INFO *lbinfo;
3528         int threshold_reply_count = 0;
3529         struct scsi_cmnd *scmd_local = NULL;
3530         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3531         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3532
3533         fusion = instance->ctrl_context;
3534
3535         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3536                 return IRQ_HANDLED;
3537
3538         desc = fusion->reply_frames_desc[MSIxIndex] +
3539                                 fusion->last_reply_idx[MSIxIndex];
3540
3541         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3542
3543         d_val.word = desc->Words;
3544
3545         reply_descript_type = reply_desc->ReplyFlags &
3546                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3547
3548         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3549                 return IRQ_NONE;
3550
3551         num_completed = 0;
3552
3553         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3554                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3555
3556                 smid = le16_to_cpu(reply_desc->SMID);
3557                 cmd_fusion = fusion->cmd_list[smid - 1];
3558                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3559                                                 cmd_fusion->io_request;
3560
3561                 scmd_local = cmd_fusion->scmd;
3562                 status = scsi_io_req->RaidContext.raid_context.status;
3563                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3564                 sense = cmd_fusion->sense;
3565                 data_length = scsi_io_req->DataLength;
3566
3567                 switch (scsi_io_req->Function) {
3568                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3569                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3570                                                 cmd_fusion->io_request;
3571                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3572                                                 &mr_tm_req->TmRequest;
3573                         dev_dbg(&instance->pdev->dev, "TM completion:"
3574                                 "type: 0x%x TaskMID: 0x%x\n",
3575                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3576                         complete(&cmd_fusion->done);
3577                         break;
3578                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3579                         /* Update load balancing info */
3580                         if (fusion->load_balance_info &&
3581                             (cmd_fusion->scmd->SCp.Status &
3582                             MEGASAS_LOAD_BALANCE_FLAG)) {
3583                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3584                                 lbinfo = &fusion->load_balance_info[device_id];
3585                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3586                                 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3587                         }
3588                         /* Fall through - and complete IO */
3589                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3590                         atomic_dec(&instance->fw_outstanding);
3591                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3592                                 map_cmd_status(fusion, scmd_local, status,
3593                                                extStatus, le32_to_cpu(data_length),
3594                                                sense);
3595                                 if (instance->ldio_threshold &&
3596                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3597                                         atomic_dec(&instance->ldio_outstanding);
3598                                 scmd_local->SCp.ptr = NULL;
3599                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3600                                 scsi_dma_unmap(scmd_local);
3601                                 scmd_local->scsi_done(scmd_local);
3602                         } else  /* Optimal VD - R1 FP command completion. */
3603                                 megasas_complete_r1_command(instance, cmd_fusion);
3604                         break;
3605                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3606                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3607                         /* Poll mode. Dummy free.
3608                          * In case of Interrupt mode, caller has reverse check.
3609                          */
3610                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3611                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3612                                 megasas_return_cmd(instance, cmd_mfi);
3613                         } else
3614                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3615                         break;
3616                 }
3617
3618                 fusion->last_reply_idx[MSIxIndex]++;
3619                 if (fusion->last_reply_idx[MSIxIndex] >=
3620                     fusion->reply_q_depth)
3621                         fusion->last_reply_idx[MSIxIndex] = 0;
3622
3623                 desc->Words = cpu_to_le64(ULLONG_MAX);
3624                 num_completed++;
3625                 threshold_reply_count++;
3626
3627                 /* Get the next reply descriptor */
3628                 if (!fusion->last_reply_idx[MSIxIndex])
3629                         desc = fusion->reply_frames_desc[MSIxIndex];
3630                 else
3631                         desc++;
3632
3633                 reply_desc =
3634                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3635
3636                 d_val.word = desc->Words;
3637
3638                 reply_descript_type = reply_desc->ReplyFlags &
3639                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3640
3641                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3642                         break;
3643                 /*
3644                  * Write to reply post host index register after completing threshold
3645                  * number of reply counts and still there are more replies in reply queue
3646                  * pending to be completed
3647                  */
3648                 if (threshold_reply_count >= instance->threshold_reply_count) {
3649                         if (instance->msix_combined)
3650                                 writel(((MSIxIndex & 0x7) << 24) |
3651                                         fusion->last_reply_idx[MSIxIndex],
3652                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3653                         else
3654                                 writel((MSIxIndex << 24) |
3655                                         fusion->last_reply_idx[MSIxIndex],
3656                                         instance->reply_post_host_index_addr[0]);
3657                         threshold_reply_count = 0;
3658                         if (irq_context) {
3659                                 if (!irq_context->irq_poll_scheduled) {
3660                                         irq_context->irq_poll_scheduled = true;
3661                                         irq_context->irq_line_enable = true;
3662                                         irq_poll_sched(&irq_context->irqpoll);
3663                                 }
3664                                 return num_completed;
3665                         }
3666                 }
3667         }
3668
3669         if (num_completed) {
3670                 wmb();
3671                 if (instance->msix_combined)
3672                         writel(((MSIxIndex & 0x7) << 24) |
3673                                 fusion->last_reply_idx[MSIxIndex],
3674                                 instance->reply_post_host_index_addr[MSIxIndex/8]);
3675                 else
3676                         writel((MSIxIndex << 24) |
3677                                 fusion->last_reply_idx[MSIxIndex],
3678                                 instance->reply_post_host_index_addr[0]);
3679                 megasas_check_and_restore_queue_depth(instance);
3680         }
3681         return num_completed;
3682 }
3683
3684 /**
3685  * megasas_enable_irq_poll() - enable irqpoll
3686  */
3687 static void megasas_enable_irq_poll(struct megasas_instance *instance)
3688 {
3689         u32 count, i;
3690         struct megasas_irq_context *irq_ctx;
3691
3692         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3693
3694         for (i = 0; i < count; i++) {
3695                 irq_ctx = &instance->irq_context[i];
3696                 irq_poll_enable(&irq_ctx->irqpoll);
3697         }
3698 }
3699
3700 /**
3701  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3702  * @instance:                   Adapter soft state
3703  */
3704 void megasas_sync_irqs(unsigned long instance_addr)
3705 {
3706         u32 count, i;
3707         struct megasas_instance *instance =
3708                 (struct megasas_instance *)instance_addr;
3709         struct megasas_irq_context *irq_ctx;
3710
3711         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3712
3713         for (i = 0; i < count; i++) {
3714                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3715                 irq_ctx = &instance->irq_context[i];
3716                 irq_poll_disable(&irq_ctx->irqpoll);
3717                 if (irq_ctx->irq_poll_scheduled) {
3718                         irq_ctx->irq_poll_scheduled = false;
3719                         enable_irq(irq_ctx->os_irq);
3720                 }
3721         }
3722 }
3723
3724 /**
3725  * megasas_irqpoll() - process a queue for completed reply descriptors
3726  * @irqpoll:    IRQ poll structure associated with queue to poll.
3727  * @budget:     Threshold of reply descriptors to process per poll.
3728  *
3729  * Return: The number of entries processed.
3730  */
3731
3732 int megasas_irqpoll(struct irq_poll *irqpoll, int budget)
3733 {
3734         struct megasas_irq_context *irq_ctx;
3735         struct megasas_instance *instance;
3736         int num_entries;
3737
3738         irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll);
3739         instance = irq_ctx->instance;
3740
3741         if (irq_ctx->irq_line_enable) {
3742                 disable_irq(irq_ctx->os_irq);
3743                 irq_ctx->irq_line_enable = false;
3744         }
3745
3746         num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3747         if (num_entries < budget) {
3748                 irq_poll_complete(irqpoll);
3749                 irq_ctx->irq_poll_scheduled = false;
3750                 enable_irq(irq_ctx->os_irq);
3751         }
3752
3753         return num_entries;
3754 }
3755
3756 /**
3757  * megasas_complete_cmd_dpc_fusion -    Completes command
3758  * @instance:                   Adapter soft state
3759  *
3760  * Tasklet to complete cmds
3761  */
3762 void
3763 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3764 {
3765         struct megasas_instance *instance =
3766                 (struct megasas_instance *)instance_addr;
3767         u32 count, MSIxIndex;
3768
3769         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3770
3771         /* If we have already declared adapter dead, donot complete cmds */
3772         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3773                 return;
3774
3775         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3776                 complete_cmd_fusion(instance, MSIxIndex, NULL);
3777 }
3778
3779 /**
3780  * megasas_isr_fusion - isr entry point
3781  */
3782 irqreturn_t megasas_isr_fusion(int irq, void *devp)
3783 {
3784         struct megasas_irq_context *irq_context = devp;
3785         struct megasas_instance *instance = irq_context->instance;
3786         u32 mfiStatus;
3787
3788         if (instance->mask_interrupts)
3789                 return IRQ_NONE;
3790
3791 #if defined(ENABLE_IRQ_POLL)
3792         if (irq_context->irq_poll_scheduled)
3793                 return IRQ_HANDLED;
3794 #endif
3795
3796         if (!instance->msix_vectors) {
3797                 mfiStatus = instance->instancet->clear_intr(instance);
3798                 if (!mfiStatus)
3799                         return IRQ_NONE;
3800         }
3801
3802         /* If we are resetting, bail */
3803         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3804                 instance->instancet->clear_intr(instance);
3805                 return IRQ_HANDLED;
3806         }
3807
3808         return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context)
3809                         ? IRQ_HANDLED : IRQ_NONE;
3810 }
3811
3812 /**
3813  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3814  * @instance:                   Adapter soft state
3815  * mfi_cmd:                     megasas_cmd pointer
3816  *
3817  */
3818 void
3819 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3820                         struct megasas_cmd *mfi_cmd)
3821 {
3822         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3823         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3824         struct megasas_cmd_fusion *cmd;
3825         struct fusion_context *fusion;
3826         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3827
3828         fusion = instance->ctrl_context;
3829
3830         cmd = megasas_get_cmd_fusion(instance,
3831                         instance->max_scsi_cmds + mfi_cmd->index);
3832
3833         /*  Save the smid. To be used for returning the cmd */
3834         mfi_cmd->context.smid = cmd->index;
3835
3836         /*
3837          * For cmds where the flag is set, store the flag and check
3838          * on completion. For cmds with this flag, don't call
3839          * megasas_complete_cmd
3840          */
3841
3842         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3843                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3844
3845         io_req = cmd->io_request;
3846
3847         if (instance->adapter_type >= INVADER_SERIES) {
3848                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3849                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3850                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3851                 sgl_ptr_end->Flags = 0;
3852         }
3853
3854         mpi25_ieee_chain =
3855           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3856
3857         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3858         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3859                                        SGL) / 4;
3860         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3861
3862         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3863
3864         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3865                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3866
3867         mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3868 }
3869
3870 /**
3871  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3872  * @instance:                   Adapter soft state
3873  * @cmd:                        mfi cmd to build
3874  *
3875  */
3876 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3877 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3878 {
3879         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3880         u16 index;
3881
3882         build_mpt_mfi_pass_thru(instance, cmd);
3883         index = cmd->context.smid;
3884
3885         req_desc = megasas_get_request_descriptor(instance, index - 1);
3886
3887         req_desc->Words = 0;
3888         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3889                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3890
3891         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3892
3893         return req_desc;
3894 }
3895
3896 /**
3897  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3898  * @instance:                   Adapter soft state
3899  * @cmd:                        mfi cmd pointer
3900  *
3901  */
3902 void
3903 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3904                           struct megasas_cmd *cmd)
3905 {
3906         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3907
3908         req_desc = build_mpt_cmd(instance, cmd);
3909
3910         megasas_fire_cmd_fusion(instance, req_desc);
3911         return;
3912 }
3913
3914 /**
3915  * megasas_release_fusion -     Reverses the FW initialization
3916  * @instance:                   Adapter soft state
3917  */
3918 void
3919 megasas_release_fusion(struct megasas_instance *instance)
3920 {
3921         megasas_free_ioc_init_cmd(instance);
3922         megasas_free_cmds(instance);
3923         megasas_free_cmds_fusion(instance);
3924
3925         iounmap(instance->reg_set);
3926
3927         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3928 }
3929
3930 /**
3931  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3932  * @regs:                       MFI register set
3933  */
3934 static u32
3935 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
3936 {
3937         return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
3938 }
3939
3940 /**
3941  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
3942  * @instance:                           Controller's soft instance
3943  * return:                              Number of allocated host crash buffers
3944  */
3945 static void
3946 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3947 {
3948         unsigned int i;
3949
3950         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3951                 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3952                 if (!instance->crash_buf[i]) {
3953                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3954                                 "memory allocation failed at index %d\n", i);
3955                         break;
3956                 }
3957         }
3958         instance->drv_buf_alloc = i;
3959 }
3960
3961 /**
3962  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
3963  * @instance:                           Controller's soft instance
3964  */
3965 void
3966 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3967 {
3968         unsigned int i;
3969         for (i = 0; i < instance->drv_buf_alloc; i++) {
3970                 if (instance->crash_buf[i])
3971                         vfree(instance->crash_buf[i]);
3972         }
3973         instance->drv_buf_index = 0;
3974         instance->drv_buf_alloc = 0;
3975         instance->fw_crash_state = UNAVAILABLE;
3976         instance->fw_crash_buffer_size = 0;
3977 }
3978
3979 /**
3980  * megasas_adp_reset_fusion -   For controller reset
3981  * @regs:                               MFI register set
3982  */
3983 static int
3984 megasas_adp_reset_fusion(struct megasas_instance *instance,
3985                          struct megasas_register_set __iomem *regs)
3986 {
3987         u32 host_diag, abs_state, retry;
3988
3989         /* Now try to reset the chip */
3990         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3991         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3992         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3993         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3994         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3995         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3996         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3997
3998         /* Check that the diag write enable (DRWE) bit is on */
3999         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4000         retry = 0;
4001         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
4002                 msleep(100);
4003                 host_diag = megasas_readl(instance,
4004                                           &instance->reg_set->fusion_host_diag);
4005                 if (retry++ == 100) {
4006                         dev_warn(&instance->pdev->dev,
4007                                 "Host diag unlock failed from %s %d\n",
4008                                 __func__, __LINE__);
4009                         break;
4010                 }
4011         }
4012         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
4013                 return -1;
4014
4015         /* Send chip reset command */
4016         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
4017                 &instance->reg_set->fusion_host_diag);
4018         msleep(3000);
4019
4020         /* Make sure reset adapter bit is cleared */
4021         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4022         retry = 0;
4023         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
4024                 msleep(100);
4025                 host_diag = megasas_readl(instance,
4026                                           &instance->reg_set->fusion_host_diag);
4027                 if (retry++ == 1000) {
4028                         dev_warn(&instance->pdev->dev,
4029                                 "Diag reset adapter never cleared %s %d\n",
4030                                 __func__, __LINE__);
4031                         break;
4032                 }
4033         }
4034         if (host_diag & HOST_DIAG_RESET_ADAPTER)
4035                 return -1;
4036
4037         abs_state = instance->instancet->read_fw_status_reg(instance)
4038                         & MFI_STATE_MASK;
4039         retry = 0;
4040
4041         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
4042                 msleep(100);
4043                 abs_state = instance->instancet->
4044                         read_fw_status_reg(instance) & MFI_STATE_MASK;
4045         }
4046         if (abs_state <= MFI_STATE_FW_INIT) {
4047                 dev_warn(&instance->pdev->dev,
4048                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
4049                         abs_state, __func__, __LINE__);
4050                 return -1;
4051         }
4052
4053         return 0;
4054 }
4055
4056 /**
4057  * megasas_check_reset_fusion - For controller reset check
4058  * @regs:                               MFI register set
4059  */
4060 static int
4061 megasas_check_reset_fusion(struct megasas_instance *instance,
4062                            struct megasas_register_set __iomem *regs)
4063 {
4064         return 0;
4065 }
4066
4067 /**
4068  * megasas_trigger_snap_dump -  Trigger snap dump in FW
4069  * @instance:                   Soft instance of adapter
4070  */
4071 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
4072 {
4073         int j;
4074         u32 fw_state, abs_state;
4075
4076         if (!instance->disableOnlineCtrlReset) {
4077                 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
4078                 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
4079                        &instance->reg_set->doorbell);
4080                 readl(&instance->reg_set->doorbell);
4081         }
4082
4083         for (j = 0; j < instance->snapdump_wait_time; j++) {
4084                 abs_state = instance->instancet->read_fw_status_reg(instance);
4085                 fw_state = abs_state & MFI_STATE_MASK;
4086                 if (fw_state == MFI_STATE_FAULT) {
4087                         dev_printk(KERN_ERR, &instance->pdev->dev,
4088                                    "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4089                                    abs_state & MFI_STATE_FAULT_CODE,
4090                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4091                         return;
4092                 }
4093                 msleep(1000);
4094         }
4095 }
4096
4097 /* This function waits for outstanding commands on fusion to complete */
4098 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
4099                                         int reason, int *convert)
4100 {
4101         int i, outstanding, retval = 0, hb_seconds_missed = 0;
4102         u32 fw_state, abs_state;
4103         u32 waittime_for_io_completion;
4104
4105         waittime_for_io_completion =
4106                 min_t(u32, resetwaittime,
4107                         (resetwaittime - instance->snapdump_wait_time));
4108
4109         if (reason == MFI_IO_TIMEOUT_OCR) {
4110                 dev_info(&instance->pdev->dev,
4111                         "MFI command is timed out\n");
4112                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4113                 if (instance->snapdump_wait_time)
4114                         megasas_trigger_snap_dump(instance);
4115                 retval = 1;
4116                 goto out;
4117         }
4118
4119         for (i = 0; i < waittime_for_io_completion; i++) {
4120                 /* Check if firmware is in fault state */
4121                 abs_state = instance->instancet->read_fw_status_reg(instance);
4122                 fw_state = abs_state & MFI_STATE_MASK;
4123                 if (fw_state == MFI_STATE_FAULT) {
4124                         dev_printk(KERN_ERR, &instance->pdev->dev,
4125                                    "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4126                                    abs_state & MFI_STATE_FAULT_CODE,
4127                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4128                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4129                         if (instance->requestorId && reason) {
4130                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
4131                                 " state while polling during"
4132                                 " I/O timeout handling for %d\n",
4133                                 instance->host->host_no);
4134                                 *convert = 1;
4135                         }
4136
4137                         retval = 1;
4138                         goto out;
4139                 }
4140
4141
4142                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
4143                 if (instance->requestorId && !reason) {
4144                         retval = 1;
4145                         goto out;
4146                 }
4147
4148                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
4149                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
4150                         if (instance->hb_host_mem->HB.fwCounter !=
4151                             instance->hb_host_mem->HB.driverCounter) {
4152                                 instance->hb_host_mem->HB.driverCounter =
4153                                         instance->hb_host_mem->HB.fwCounter;
4154                                 hb_seconds_missed = 0;
4155                         } else {
4156                                 hb_seconds_missed++;
4157                                 if (hb_seconds_missed ==
4158                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
4159                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
4160                                                " Heartbeat never completed "
4161                                                " while polling during I/O "
4162                                                " timeout handling for "
4163                                                "scsi%d.\n",
4164                                                instance->host->host_no);
4165                                                *convert = 1;
4166                                                retval = 1;
4167                                                goto out;
4168                                 }
4169                         }
4170                 }
4171
4172                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4173                 outstanding = atomic_read(&instance->fw_outstanding);
4174                 if (!outstanding)
4175                         goto out;
4176
4177                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4178                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
4179                                "commands to complete for scsi%d\n", i,
4180                                outstanding, instance->host->host_no);
4181                 }
4182                 msleep(1000);
4183         }
4184
4185         if (instance->snapdump_wait_time) {
4186                 megasas_trigger_snap_dump(instance);
4187                 retval = 1;
4188                 goto out;
4189         }
4190
4191         if (atomic_read(&instance->fw_outstanding)) {
4192                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
4193                        "will reset adapter scsi%d.\n",
4194                        instance->host->host_no);
4195                 *convert = 1;
4196                 retval = 1;
4197         }
4198
4199 out:
4200         return retval;
4201 }
4202
4203 void  megasas_reset_reply_desc(struct megasas_instance *instance)
4204 {
4205         int i, j, count;
4206         struct fusion_context *fusion;
4207         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
4208
4209         fusion = instance->ctrl_context;
4210         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
4211         for (i = 0 ; i < count ; i++) {
4212                 fusion->last_reply_idx[i] = 0;
4213                 reply_desc = fusion->reply_frames_desc[i];
4214                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
4215                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
4216         }
4217 }
4218
4219 /*
4220  * megasas_refire_mgmt_cmd :    Re-fire management commands
4221  * @instance:                           Controller's soft instance
4222 */
4223 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
4224 {
4225         int j;
4226         struct megasas_cmd_fusion *cmd_fusion;
4227         struct fusion_context *fusion;
4228         struct megasas_cmd *cmd_mfi;
4229         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4230         u16 smid;
4231         bool refire_cmd = 0;
4232         u8 result;
4233         u32 opcode = 0;
4234
4235         fusion = instance->ctrl_context;
4236
4237         /* Re-fire management commands.
4238          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4239          */
4240         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4241                 cmd_fusion = fusion->cmd_list[j];
4242                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4243                 smid = le16_to_cpu(cmd_mfi->context.smid);
4244                 result = REFIRE_CMD;
4245
4246                 if (!smid)
4247                         continue;
4248
4249                 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4250
4251                 switch (cmd_mfi->frame->hdr.cmd) {
4252                 case MFI_CMD_DCMD:
4253                         opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4254                          /* Do not refire shutdown command */
4255                         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4256                                 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4257                                 result = COMPLETE_CMD;
4258                                 break;
4259                         }
4260
4261                         refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4262                                       (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4263                                       !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4264
4265                         if (!refire_cmd)
4266                                 result = RETURN_CMD;
4267
4268                         break;
4269                 case MFI_CMD_NVME:
4270                         if (!instance->support_nvme_passthru) {
4271                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4272                                 result = COMPLETE_CMD;
4273                         }
4274
4275                         break;
4276                 case MFI_CMD_TOOLBOX:
4277                         if (!instance->support_pci_lane_margining) {
4278                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4279                                 result = COMPLETE_CMD;
4280                         }
4281
4282                         break;
4283                 default:
4284                         break;
4285                 }
4286
4287                 switch (result) {
4288                 case REFIRE_CMD:
4289                         megasas_fire_cmd_fusion(instance, req_desc);
4290                         break;
4291                 case RETURN_CMD:
4292                         megasas_return_cmd(instance, cmd_mfi);
4293                         break;
4294                 case COMPLETE_CMD:
4295                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4296                         break;
4297                 }
4298         }
4299 }
4300
4301 /*
4302  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4303  * @instance: per adapter struct
4304  * @channel: the channel assigned by the OS
4305  * @id: the id assigned by the OS
4306  *
4307  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4308  */
4309
4310 static int megasas_track_scsiio(struct megasas_instance *instance,
4311                 int id, int channel)
4312 {
4313         int i, found = 0;
4314         struct megasas_cmd_fusion *cmd_fusion;
4315         struct fusion_context *fusion;
4316         fusion = instance->ctrl_context;
4317
4318         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4319                 cmd_fusion = fusion->cmd_list[i];
4320                 if (cmd_fusion->scmd &&
4321                         (cmd_fusion->scmd->device->id == id &&
4322                         cmd_fusion->scmd->device->channel == channel)) {
4323                         dev_info(&instance->pdev->dev,
4324                                 "SCSI commands pending to target"
4325                                 "channel %d id %d \tSMID: 0x%x\n",
4326                                 channel, id, cmd_fusion->index);
4327                         scsi_print_command(cmd_fusion->scmd);
4328                         found = 1;
4329                         break;
4330                 }
4331         }
4332
4333         return found ? FAILED : SUCCESS;
4334 }
4335
4336 /**
4337  * megasas_tm_response_code - translation of device response code
4338  * @ioc: per adapter object
4339  * @mpi_reply: MPI reply returned by firmware
4340  *
4341  * Return nothing.
4342  */
4343 static void
4344 megasas_tm_response_code(struct megasas_instance *instance,
4345                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4346 {
4347         char *desc;
4348
4349         switch (mpi_reply->ResponseCode) {
4350         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4351                 desc = "task management request completed";
4352                 break;
4353         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4354                 desc = "invalid frame";
4355                 break;
4356         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4357                 desc = "task management request not supported";
4358                 break;
4359         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4360                 desc = "task management request failed";
4361                 break;
4362         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4363                 desc = "task management request succeeded";
4364                 break;
4365         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4366                 desc = "invalid lun";
4367                 break;
4368         case 0xA:
4369                 desc = "overlapped tag attempted";
4370                 break;
4371         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4372                 desc = "task queued, however not sent to target";
4373                 break;
4374         default:
4375                 desc = "unknown";
4376                 break;
4377         }
4378         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4379                 mpi_reply->ResponseCode, desc);
4380         dev_dbg(&instance->pdev->dev,
4381                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4382                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4383                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4384                 mpi_reply->Function, mpi_reply->TaskType,
4385                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4386 }
4387
4388 /**
4389  * megasas_issue_tm - main routine for sending tm requests
4390  * @instance: per adapter struct
4391  * @device_handle: device handle
4392  * @channel: the channel assigned by the OS
4393  * @id: the id assigned by the OS
4394  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4395  * @smid_task: smid assigned to the task
4396  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4397  * Context: user
4398  *
4399  * MegaRaid use MPT interface for Task Magement request.
4400  * A generic API for sending task management requests to firmware.
4401  *
4402  * Return SUCCESS or FAILED.
4403  */
4404 static int
4405 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4406         uint channel, uint id, u16 smid_task, u8 type,
4407         struct MR_PRIV_DEVICE *mr_device_priv_data)
4408 {
4409         struct MR_TASK_MANAGE_REQUEST *mr_request;
4410         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4411         unsigned long timeleft;
4412         struct megasas_cmd_fusion *cmd_fusion;
4413         struct megasas_cmd *cmd_mfi;
4414         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4415         struct fusion_context *fusion = NULL;
4416         struct megasas_cmd_fusion *scsi_lookup;
4417         int rc;
4418         int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4419         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4420
4421         fusion = instance->ctrl_context;
4422
4423         cmd_mfi = megasas_get_cmd(instance);
4424
4425         if (!cmd_mfi) {
4426                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4427                         __func__, __LINE__);
4428                 return -ENOMEM;
4429         }
4430
4431         cmd_fusion = megasas_get_cmd_fusion(instance,
4432                         instance->max_scsi_cmds + cmd_mfi->index);
4433
4434         /*  Save the smid. To be used for returning the cmd */
4435         cmd_mfi->context.smid = cmd_fusion->index;
4436
4437         req_desc = megasas_get_request_descriptor(instance,
4438                         (cmd_fusion->index - 1));
4439
4440         cmd_fusion->request_desc = req_desc;
4441         req_desc->Words = 0;
4442
4443         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4444         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4445         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4446         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4447         mpi_request->DevHandle = cpu_to_le16(device_handle);
4448         mpi_request->TaskType = type;
4449         mpi_request->TaskMID = cpu_to_le16(smid_task);
4450         mpi_request->LUN[1] = 0;
4451
4452
4453         req_desc = cmd_fusion->request_desc;
4454         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4455         req_desc->HighPriority.RequestFlags =
4456                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4457                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4458         req_desc->HighPriority.MSIxIndex =  0;
4459         req_desc->HighPriority.LMID = 0;
4460         req_desc->HighPriority.Reserved1 = 0;
4461
4462         if (channel < MEGASAS_MAX_PD_CHANNELS)
4463                 mr_request->tmReqFlags.isTMForPD = 1;
4464         else
4465                 mr_request->tmReqFlags.isTMForLD = 1;
4466
4467         init_completion(&cmd_fusion->done);
4468         megasas_fire_cmd_fusion(instance, req_desc);
4469
4470         switch (type) {
4471         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4472                 timeout = mr_device_priv_data->task_abort_tmo;
4473                 break;
4474         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4475                 timeout = mr_device_priv_data->target_reset_tmo;
4476                 break;
4477         }
4478
4479         timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4480
4481         if (!timeleft) {
4482                 dev_err(&instance->pdev->dev,
4483                         "task mgmt type 0x%x timed out\n", type);
4484                 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
4485                 mutex_unlock(&instance->reset_mutex);
4486                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4487                 mutex_lock(&instance->reset_mutex);
4488                 return rc;
4489         }
4490
4491         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4492         megasas_tm_response_code(instance, mpi_reply);
4493
4494         megasas_return_cmd(instance, cmd_mfi);
4495         rc = SUCCESS;
4496         switch (type) {
4497         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4498                 scsi_lookup = fusion->cmd_list[smid_task - 1];
4499
4500                 if (scsi_lookup->scmd == NULL)
4501                         break;
4502                 else {
4503                         instance->instancet->disable_intr(instance);
4504                         megasas_sync_irqs((unsigned long)instance);
4505                         instance->instancet->enable_intr(instance);
4506                         megasas_enable_irq_poll(instance);
4507                         if (scsi_lookup->scmd == NULL)
4508                                 break;
4509                 }
4510                 rc = FAILED;
4511                 break;
4512
4513         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4514                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4515                         break;
4516                 instance->instancet->disable_intr(instance);
4517                 megasas_sync_irqs((unsigned long)instance);
4518                 rc = megasas_track_scsiio(instance, id, channel);
4519                 instance->instancet->enable_intr(instance);
4520                 megasas_enable_irq_poll(instance);
4521
4522                 break;
4523         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4524         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4525                 break;
4526         default:
4527                 rc = FAILED;
4528                 break;
4529         }
4530
4531         return rc;
4532
4533 }
4534
4535 /*
4536  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4537  * @instance: per adapter struct
4538  *
4539  * Return Non Zero index, if SMID found in outstanding commands
4540  */
4541 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4542 {
4543         int i, ret = 0;
4544         struct megasas_instance *instance;
4545         struct megasas_cmd_fusion *cmd_fusion;
4546         struct fusion_context *fusion;
4547
4548         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4549
4550         fusion = instance->ctrl_context;
4551
4552         for (i = 0; i < instance->max_scsi_cmds; i++) {
4553                 cmd_fusion = fusion->cmd_list[i];
4554                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4555                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4556                                 " SMID: %d\n", cmd_fusion->index);
4557                         ret = cmd_fusion->index;
4558                         break;
4559                 }
4560         }
4561
4562         return ret;
4563 }
4564
4565 /*
4566 * megasas_get_tm_devhandle - Get devhandle for TM request
4567 * @sdev-                     OS provided scsi device
4568 *
4569 * Returns-                   devhandle/targetID of SCSI device
4570 */
4571 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4572 {
4573         u16 pd_index = 0;
4574         u32 device_id;
4575         struct megasas_instance *instance;
4576         struct fusion_context *fusion;
4577         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4578         u16 devhandle = (u16)ULONG_MAX;
4579
4580         instance = (struct megasas_instance *)sdev->host->hostdata;
4581         fusion = instance->ctrl_context;
4582
4583         if (!MEGASAS_IS_LOGICAL(sdev)) {
4584                 if (instance->use_seqnum_jbod_fp) {
4585                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4586                                     + sdev->id;
4587                         pd_sync = (void *)fusion->pd_seq_sync
4588                                         [(instance->pd_seq_map_id - 1) & 1];
4589                         devhandle = pd_sync->seq[pd_index].devHandle;
4590                 } else
4591                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4592                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4593         } else {
4594                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4595                                 + sdev->id;
4596                 devhandle = device_id;
4597         }
4598
4599         return devhandle;
4600 }
4601
4602 /*
4603  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4604  * @scmd : pointer to scsi command object
4605  *
4606  * Return SUCCESS, if command aborted else FAILED
4607  */
4608
4609 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4610 {
4611         struct megasas_instance *instance;
4612         u16 smid, devhandle;
4613         int ret;
4614         struct MR_PRIV_DEVICE *mr_device_priv_data;
4615         mr_device_priv_data = scmd->device->hostdata;
4616
4617         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4618
4619         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4620                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4621                 "SCSI host:%d\n", instance->host->host_no);
4622                 ret = FAILED;
4623                 return ret;
4624         }
4625
4626         if (!mr_device_priv_data) {
4627                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4628                         "scmd(%p)\n", scmd);
4629                 scmd->result = DID_NO_CONNECT << 16;
4630                 ret = SUCCESS;
4631                 goto out;
4632         }
4633
4634         if (!mr_device_priv_data->is_tm_capable) {
4635                 ret = FAILED;
4636                 goto out;
4637         }
4638
4639         mutex_lock(&instance->reset_mutex);
4640
4641         smid = megasas_fusion_smid_lookup(scmd);
4642
4643         if (!smid) {
4644                 ret = SUCCESS;
4645                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4646                         " issued is not found in outstanding commands\n");
4647                 mutex_unlock(&instance->reset_mutex);
4648                 goto out;
4649         }
4650
4651         devhandle = megasas_get_tm_devhandle(scmd->device);
4652
4653         if (devhandle == (u16)ULONG_MAX) {
4654                 ret = SUCCESS;
4655                 sdev_printk(KERN_INFO, scmd->device,
4656                         "task abort issued for invalid devhandle\n");
4657                 mutex_unlock(&instance->reset_mutex);
4658                 goto out;
4659         }
4660         sdev_printk(KERN_INFO, scmd->device,
4661                 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n",
4662                 scmd, devhandle);
4663
4664         mr_device_priv_data->tm_busy = 1;
4665         ret = megasas_issue_tm(instance, devhandle,
4666                         scmd->device->channel, scmd->device->id, smid,
4667                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4668                         mr_device_priv_data);
4669         mr_device_priv_data->tm_busy = 0;
4670
4671         mutex_unlock(&instance->reset_mutex);
4672         scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n",
4673                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4674 out:
4675         scsi_print_command(scmd);
4676         if (megasas_dbg_lvl & TM_DEBUG)
4677                 megasas_dump_fusion_io(scmd);
4678
4679         return ret;
4680 }
4681
4682 /*
4683  * megasas_reset_target_fusion : target reset function for fusion adapters
4684  * scmd: SCSI command pointer
4685  *
4686  * Returns SUCCESS if all commands associated with target aborted else FAILED
4687  */
4688
4689 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4690 {
4691
4692         struct megasas_instance *instance;
4693         int ret = FAILED;
4694         u16 devhandle;
4695         struct MR_PRIV_DEVICE *mr_device_priv_data;
4696         mr_device_priv_data = scmd->device->hostdata;
4697
4698         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4699
4700         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4701                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4702                 "SCSI host:%d\n", instance->host->host_no);
4703                 ret = FAILED;
4704                 return ret;
4705         }
4706
4707         if (!mr_device_priv_data) {
4708                 sdev_printk(KERN_INFO, scmd->device,
4709                             "device been deleted! scmd: (0x%p)\n", scmd);
4710                 scmd->result = DID_NO_CONNECT << 16;
4711                 ret = SUCCESS;
4712                 goto out;
4713         }
4714
4715         if (!mr_device_priv_data->is_tm_capable) {
4716                 ret = FAILED;
4717                 goto out;
4718         }
4719
4720         mutex_lock(&instance->reset_mutex);
4721         devhandle = megasas_get_tm_devhandle(scmd->device);
4722
4723         if (devhandle == (u16)ULONG_MAX) {
4724                 ret = SUCCESS;
4725                 sdev_printk(KERN_INFO, scmd->device,
4726                         "target reset issued for invalid devhandle\n");
4727                 mutex_unlock(&instance->reset_mutex);
4728                 goto out;
4729         }
4730
4731         sdev_printk(KERN_INFO, scmd->device,
4732                 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n",
4733                 scmd, devhandle);
4734         mr_device_priv_data->tm_busy = 1;
4735         ret = megasas_issue_tm(instance, devhandle,
4736                         scmd->device->channel, scmd->device->id, 0,
4737                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4738                         mr_device_priv_data);
4739         mr_device_priv_data->tm_busy = 0;
4740         mutex_unlock(&instance->reset_mutex);
4741         scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n",
4742                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4743
4744 out:
4745         return ret;
4746 }
4747
4748 /*SRIOV get other instance in cluster if any*/
4749 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4750 {
4751         int i;
4752
4753         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4754                 if (megasas_mgmt_info.instance[i] &&
4755                         (megasas_mgmt_info.instance[i] != instance) &&
4756                          megasas_mgmt_info.instance[i]->requestorId &&
4757                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4758                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4759                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4760                         return megasas_mgmt_info.instance[i];
4761         }
4762         return NULL;
4763 }
4764
4765 /* Check for a second path that is currently UP */
4766 int megasas_check_mpio_paths(struct megasas_instance *instance,
4767         struct scsi_cmnd *scmd)
4768 {
4769         struct megasas_instance *peer_instance = NULL;
4770         int retval = (DID_REQUEUE << 16);
4771
4772         if (instance->peerIsPresent) {
4773                 peer_instance = megasas_get_peer_instance(instance);
4774                 if ((peer_instance) &&
4775                         (atomic_read(&peer_instance->adprecovery) ==
4776                         MEGASAS_HBA_OPERATIONAL))
4777                         retval = (DID_NO_CONNECT << 16);
4778         }
4779         return retval;
4780 }
4781
4782 /* Core fusion reset function */
4783 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4784 {
4785         int retval = SUCCESS, i, j, convert = 0;
4786         struct megasas_instance *instance;
4787         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4788         struct fusion_context *fusion;
4789         u32 abs_state, status_reg, reset_adapter, fpio_count = 0;
4790         u32 io_timeout_in_crash_mode = 0;
4791         struct scsi_cmnd *scmd_local = NULL;
4792         struct scsi_device *sdev;
4793         int ret_target_prop = DCMD_FAILED;
4794         bool is_target_prop = false;
4795         bool do_adp_reset = true;
4796         int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES;
4797
4798         instance = (struct megasas_instance *)shost->hostdata;
4799         fusion = instance->ctrl_context;
4800
4801         mutex_lock(&instance->reset_mutex);
4802
4803         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4804                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4805                        "returning FAILED for scsi%d.\n",
4806                         instance->host->host_no);
4807                 mutex_unlock(&instance->reset_mutex);
4808                 return FAILED;
4809         }
4810         status_reg = instance->instancet->read_fw_status_reg(instance);
4811         abs_state = status_reg & MFI_STATE_MASK;
4812
4813         /* IO timeout detected, forcibly put FW in FAULT state */
4814         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4815                 instance->crash_dump_app_support && reason) {
4816                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4817                         "forcibly FAULT Firmware\n");
4818                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4819                 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4820                 writel(status_reg | MFI_STATE_FORCE_OCR,
4821                         &instance->reg_set->doorbell);
4822                 readl(&instance->reg_set->doorbell);
4823                 mutex_unlock(&instance->reset_mutex);
4824                 do {
4825                         ssleep(3);
4826                         io_timeout_in_crash_mode++;
4827                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4828                                 "seconds for crash dump collection and OCR "
4829                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4830                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4831                         (io_timeout_in_crash_mode < 80));
4832
4833                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4834                         dev_info(&instance->pdev->dev, "OCR done for IO "
4835                                 "timeout case\n");
4836                         retval = SUCCESS;
4837                 } else {
4838                         dev_info(&instance->pdev->dev, "Controller is not "
4839                                 "operational after 240 seconds wait for IO "
4840                                 "timeout case in FW crash dump mode\n do "
4841                                 "OCR/kill adapter\n");
4842                         retval = megasas_reset_fusion(shost, 0);
4843                 }
4844                 return retval;
4845         }
4846
4847         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4848                 del_timer_sync(&instance->sriov_heartbeat_timer);
4849         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4850         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4851         instance->instancet->disable_intr(instance);
4852         megasas_sync_irqs((unsigned long)instance);
4853
4854         /* First try waiting for commands to complete */
4855         if (megasas_wait_for_outstanding_fusion(instance, reason,
4856                                                 &convert)) {
4857                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4858                 dev_warn(&instance->pdev->dev, "resetting fusion "
4859                        "adapter scsi%d.\n", instance->host->host_no);
4860                 if (convert)
4861                         reason = 0;
4862
4863                 if (megasas_dbg_lvl & OCR_DEBUG)
4864                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4865
4866                 /* Now return commands back to the OS */
4867                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4868                         cmd_fusion = fusion->cmd_list[i];
4869                         /*check for extra commands issued by driver*/
4870                         if (instance->adapter_type >= VENTURA_SERIES) {
4871                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4872                                 megasas_return_cmd_fusion(instance, r1_cmd);
4873                         }
4874                         scmd_local = cmd_fusion->scmd;
4875                         if (cmd_fusion->scmd) {
4876                                 if (megasas_dbg_lvl & OCR_DEBUG) {
4877                                         sdev_printk(KERN_INFO,
4878                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4879                                                 cmd_fusion->index);
4880                                         megasas_dump_fusion_io(cmd_fusion->scmd);
4881                                 }
4882
4883                                 if (cmd_fusion->io_request->Function ==
4884                                         MPI2_FUNCTION_SCSI_IO_REQUEST)
4885                                         fpio_count++;
4886
4887                                 scmd_local->result =
4888                                         megasas_check_mpio_paths(instance,
4889                                                         scmd_local);
4890                                 if (instance->ldio_threshold &&
4891                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4892                                         atomic_dec(&instance->ldio_outstanding);
4893                                 megasas_return_cmd_fusion(instance, cmd_fusion);
4894                                 scsi_dma_unmap(scmd_local);
4895                                 scmd_local->scsi_done(scmd_local);
4896                         }
4897                 }
4898
4899                 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n",
4900                         fpio_count);
4901
4902                 atomic_set(&instance->fw_outstanding, 0);
4903
4904                 status_reg = instance->instancet->read_fw_status_reg(instance);
4905                 abs_state = status_reg & MFI_STATE_MASK;
4906                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4907                 if (instance->disableOnlineCtrlReset ||
4908                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4909                         /* Reset not supported, kill adapter */
4910                         dev_warn(&instance->pdev->dev, "Reset not supported"
4911                                ", killing adapter scsi%d.\n",
4912                                 instance->host->host_no);
4913                         goto kill_hba;
4914                 }
4915
4916                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4917                 if (instance->requestorId && !reason) {
4918                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4919                         do_adp_reset = false;
4920                         max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF;
4921                 }
4922
4923                 /* Now try to reset the chip */
4924                 for (i = 0; i < max_reset_tries; i++) {
4925                         /*
4926                          * Do adp reset and wait for
4927                          * controller to transition to ready
4928                          */
4929                         if (megasas_adp_reset_wait_for_ready(instance,
4930                                 do_adp_reset, 1) == FAILED)
4931                                 continue;
4932
4933                         /* Wait for FW to become ready */
4934                         if (megasas_transition_to_ready(instance, 1)) {
4935                                 dev_warn(&instance->pdev->dev,
4936                                         "Failed to transition controller to ready for "
4937                                         "scsi%d.\n", instance->host->host_no);
4938                                 continue;
4939                         }
4940                         megasas_reset_reply_desc(instance);
4941                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4942
4943                         if (megasas_ioc_init_fusion(instance)) {
4944                                 continue;
4945                         }
4946
4947                         if (megasas_get_ctrl_info(instance)) {
4948                                 dev_info(&instance->pdev->dev,
4949                                         "Failed from %s %d\n",
4950                                         __func__, __LINE__);
4951                                 goto kill_hba;
4952                         }
4953
4954                         megasas_refire_mgmt_cmd(instance);
4955
4956                         /* Reset load balance info */
4957                         if (fusion->load_balance_info)
4958                                 memset(fusion->load_balance_info, 0,
4959                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
4960                                        MAX_LOGICAL_DRIVES_EXT));
4961
4962                         if (!megasas_get_map_info(instance))
4963                                 megasas_sync_map_info(instance);
4964
4965                         megasas_setup_jbod_map(instance);
4966
4967                         /* reset stream detection array */
4968                         if (instance->adapter_type >= VENTURA_SERIES) {
4969                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
4970                                         memset(fusion->stream_detect_by_ld[j],
4971                                         0, sizeof(struct LD_STREAM_DETECT));
4972                                  fusion->stream_detect_by_ld[j]->mru_bit_map
4973                                                 = MR_STREAM_BITMAP;
4974                                 }
4975                         }
4976
4977                         clear_bit(MEGASAS_FUSION_IN_RESET,
4978                                   &instance->reset_flags);
4979                         instance->instancet->enable_intr(instance);
4980                         megasas_enable_irq_poll(instance);
4981                         shost_for_each_device(sdev, shost) {
4982                                 if ((instance->tgt_prop) &&
4983                                     (instance->nvme_page_size))
4984                                         ret_target_prop = megasas_get_target_prop(instance, sdev);
4985
4986                                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
4987                                 megasas_set_dynamic_target_properties(sdev, is_target_prop);
4988                         }
4989
4990                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4991
4992                         dev_info(&instance->pdev->dev,
4993                                  "Adapter is OPERATIONAL for scsi:%d\n",
4994                                  instance->host->host_no);
4995
4996                         /* Restart SR-IOV heartbeat */
4997                         if (instance->requestorId) {
4998                                 if (!megasas_sriov_start_heartbeat(instance, 0))
4999                                         megasas_start_timer(instance);
5000                                 else
5001                                         instance->skip_heartbeat_timer_del = 1;
5002                         }
5003
5004                         if (instance->crash_dump_drv_support &&
5005                                 instance->crash_dump_app_support)
5006                                 megasas_set_crash_dump_params(instance,
5007                                         MR_CRASH_BUF_TURN_ON);
5008                         else
5009                                 megasas_set_crash_dump_params(instance,
5010                                         MR_CRASH_BUF_TURN_OFF);
5011
5012                         if (instance->snapdump_wait_time) {
5013                                 megasas_get_snapdump_properties(instance);
5014                                 dev_info(&instance->pdev->dev,
5015                                          "Snap dump wait time\t: %d\n",
5016                                          instance->snapdump_wait_time);
5017                         }
5018
5019                         retval = SUCCESS;
5020
5021                         /* Adapter reset completed successfully */
5022                         dev_warn(&instance->pdev->dev,
5023                                  "Reset successful for scsi%d.\n",
5024                                  instance->host->host_no);
5025
5026                         goto out;
5027                 }
5028                 /* Reset failed, kill the adapter */
5029                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
5030                        "adapter scsi%d.\n", instance->host->host_no);
5031                 goto kill_hba;
5032         } else {
5033                 /* For VF: Restart HB timer if we didn't OCR */
5034                 if (instance->requestorId) {
5035                         megasas_start_timer(instance);
5036                 }
5037                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
5038                 instance->instancet->enable_intr(instance);
5039                 megasas_enable_irq_poll(instance);
5040                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5041                 goto out;
5042         }
5043 kill_hba:
5044         megaraid_sas_kill_hba(instance);
5045         megasas_enable_irq_poll(instance);
5046         instance->skip_heartbeat_timer_del = 1;
5047         retval = FAILED;
5048 out:
5049         clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
5050         mutex_unlock(&instance->reset_mutex);
5051         return retval;
5052 }
5053
5054 /* Fusion Crash dump collection */
5055 void  megasas_fusion_crash_dump(struct megasas_instance *instance)
5056 {
5057         u32 status_reg;
5058         u8 partial_copy = 0;
5059         int wait = 0;
5060
5061
5062         status_reg = instance->instancet->read_fw_status_reg(instance);
5063
5064         /*
5065          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
5066          * to host crash buffers
5067          */
5068         if (instance->drv_buf_index == 0) {
5069                 /* Buffer is already allocated for old Crash dump.
5070                  * Do OCR and do not wait for crash dump collection
5071                  */
5072                 if (instance->drv_buf_alloc) {
5073                         dev_info(&instance->pdev->dev, "earlier crash dump is "
5074                                 "not yet copied by application, ignoring this "
5075                                 "crash dump and initiating OCR\n");
5076                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5077                         writel(status_reg,
5078                                 &instance->reg_set->outbound_scratch_pad_0);
5079                         readl(&instance->reg_set->outbound_scratch_pad_0);
5080                         return;
5081                 }
5082                 megasas_alloc_host_crash_buffer(instance);
5083                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
5084                         "allocated: %d\n", instance->drv_buf_alloc);
5085         }
5086
5087         while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
5088                (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
5089                 if (!(status_reg & MFI_STATE_DMADONE)) {
5090                         /*
5091                          * Next crash dump buffer is not yet DMA'd by FW
5092                          * Check after 10ms. Wait for 1 second for FW to
5093                          * post the next buffer. If not bail out.
5094                          */
5095                         wait++;
5096                         msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5097                         status_reg = instance->instancet->read_fw_status_reg(
5098                                         instance);
5099                         continue;
5100                 }
5101
5102                 wait = 0;
5103                 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
5104                         dev_info(&instance->pdev->dev,
5105                                  "Driver is done copying the buffer: %d\n",
5106                                  instance->drv_buf_alloc);
5107                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5108                         partial_copy = 1;
5109                         break;
5110                 } else {
5111                         memcpy(instance->crash_buf[instance->drv_buf_index],
5112                                instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
5113                         instance->drv_buf_index++;
5114                         status_reg &= ~MFI_STATE_DMADONE;
5115                 }
5116
5117                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5118                 readl(&instance->reg_set->outbound_scratch_pad_0);
5119
5120                 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5121                 status_reg = instance->instancet->read_fw_status_reg(instance);
5122         }
5123
5124         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
5125                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
5126                         "of copied buffers: %d\n", instance->drv_buf_index);
5127                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
5128                 instance->fw_crash_state = AVAILABLE;
5129                 instance->drv_buf_index = 0;
5130                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5131                 readl(&instance->reg_set->outbound_scratch_pad_0);
5132                 if (!partial_copy)
5133                         megasas_reset_fusion(instance->host, 0);
5134         }
5135 }
5136
5137
5138 /* Fusion OCR work queue */
5139 void megasas_fusion_ocr_wq(struct work_struct *work)
5140 {
5141         struct megasas_instance *instance =
5142                 container_of(work, struct megasas_instance, work_init);
5143
5144         megasas_reset_fusion(instance->host, 0);
5145 }
5146
5147 /* Allocate fusion context */
5148 int
5149 megasas_alloc_fusion_context(struct megasas_instance *instance)
5150 {
5151         struct fusion_context *fusion;
5152
5153         instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
5154                                          GFP_KERNEL);
5155         if (!instance->ctrl_context) {
5156                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5157                         __func__, __LINE__);
5158                 return -ENOMEM;
5159         }
5160
5161         fusion = instance->ctrl_context;
5162
5163         fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5164                                               sizeof(LD_SPAN_INFO));
5165         fusion->log_to_span =
5166                 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5167                                                 fusion->log_to_span_pages);
5168         if (!fusion->log_to_span) {
5169                 fusion->log_to_span =
5170                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5171                                            sizeof(LD_SPAN_INFO)));
5172                 if (!fusion->log_to_span) {
5173                         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5174                                 __func__, __LINE__);
5175                         return -ENOMEM;
5176                 }
5177         }
5178
5179         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5180                 sizeof(struct LD_LOAD_BALANCE_INFO));
5181         fusion->load_balance_info =
5182                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5183                 fusion->load_balance_info_pages);
5184         if (!fusion->load_balance_info) {
5185                 fusion->load_balance_info =
5186                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5187                                            sizeof(struct LD_LOAD_BALANCE_INFO)));
5188                 if (!fusion->load_balance_info)
5189                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
5190                                 "continuing without Load Balance support\n");
5191         }
5192
5193         return 0;
5194 }
5195
5196 void
5197 megasas_free_fusion_context(struct megasas_instance *instance)
5198 {
5199         struct fusion_context *fusion = instance->ctrl_context;
5200
5201         if (fusion) {
5202                 if (fusion->load_balance_info) {
5203                         if (is_vmalloc_addr(fusion->load_balance_info))
5204                                 vfree(fusion->load_balance_info);
5205                         else
5206                                 free_pages((ulong)fusion->load_balance_info,
5207                                         fusion->load_balance_info_pages);
5208                 }
5209
5210                 if (fusion->log_to_span) {
5211                         if (is_vmalloc_addr(fusion->log_to_span))
5212                                 vfree(fusion->log_to_span);
5213                         else
5214                                 free_pages((ulong)fusion->log_to_span,
5215                                            fusion->log_to_span_pages);
5216                 }
5217
5218                 kfree(fusion);
5219         }
5220 }
5221
5222 struct megasas_instance_template megasas_instance_template_fusion = {
5223         .enable_intr = megasas_enable_intr_fusion,
5224         .disable_intr = megasas_disable_intr_fusion,
5225         .clear_intr = megasas_clear_intr_fusion,
5226         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
5227         .adp_reset = megasas_adp_reset_fusion,
5228         .check_reset = megasas_check_reset_fusion,
5229         .service_isr = megasas_isr_fusion,
5230         .tasklet = megasas_complete_cmd_dpc_fusion,
5231         .init_adapter = megasas_init_adapter_fusion,
5232         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5233         .issue_dcmd = megasas_issue_dcmd_fusion,
5234 };