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
  52 megasas_complete_cmd(struct megasas_instance *instance,
  53                      struct megasas_cmd *cmd, u8 alt_status);
  54 int
  55 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
  56               int seconds);
  57
  58 int
  59 megasas_clear_intr_fusion(struct megasas_instance *instance);
  60
  61 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
  62
  63 extern u32 megasas_dbg_lvl;
  64 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
  65                                   int initial);
  66 extern struct megasas_mgmt_info megasas_mgmt_info;
  67 extern unsigned int resetwaittime;
  68 extern unsigned int dual_qdepth_disable;
  69 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
  70 static void megasas_free_reply_fusion(struct megasas_instance *instance);
  71 static inline
  72 void megasas_configure_queue_sizes(struct megasas_instance *instance);
  73 static void megasas_fusion_crash_dump(struct megasas_instance *instance);
  74
  75 /**
  76  * megasas_adp_reset_wait_for_ready -   initiate chip reset and wait for
  77  *                                      controller to come to ready state
  78  * @instance:                           adapter's soft state
  79  * @do_adp_reset:                       If true, do a chip reset
  80  * @ocr_context:                        If called from OCR context this will
  81  *                                      be set to 1, else 0
  82  *
  83  * This function initates a chip reset followed by a wait for controller to
  84  * transition to ready state.
  85  * During this, driver will block all access to PCI config space from userspace
  86  */
  87 int
  88 megasas_adp_reset_wait_for_ready(struct megasas_instance *instance,
  89                                  bool do_adp_reset,
  90                                  int ocr_context)
  91 {
  92         int ret = FAILED;
  93
  94         /*
  95          * Block access to PCI config space from userspace
  96          * when diag reset is initiated from driver
  97          */
  98         if (megasas_dbg_lvl & OCR_DEBUG)
  99                 dev_info(&instance->pdev->dev,
 100                          "Block access to PCI config space %s %d\n",
 101                          __func__, __LINE__);
 102
 103         pci_cfg_access_lock(instance->pdev);
 104
 105         if (do_adp_reset) {
 106                 if (instance->instancet->adp_reset
 107                         (instance, instance->reg_set))
 108                         goto out;
 109         }
 110
 111         /* Wait for FW to become ready */
 112         if (megasas_transition_to_ready(instance, ocr_context)) {
 113                 dev_warn(&instance->pdev->dev,
 114                          "Failed to transition controller to ready for scsi%d.\n",
 115                          instance->host->host_no);
 116                 goto out;
 117         }
 118
 119         ret = SUCCESS;
 120 out:
 121         if (megasas_dbg_lvl & OCR_DEBUG)
 122                 dev_info(&instance->pdev->dev,
 123                          "Unlock access to PCI config space %s %d\n",
 124                          __func__, __LINE__);
 125
 126         pci_cfg_access_unlock(instance->pdev);
 127
 128         return ret;
 129 }
 130
 131 /**
 132  * megasas_check_same_4gb_region -      check if allocation
 133  *                                      crosses same 4GB boundary or not
 134  * @instance:                           adapter's soft instance
 135  * @start_addr:                         start address of DMA allocation
 136  * @size:                               size of allocation in bytes
 137  * @return:                             true : allocation does not cross same
 138  *                                      4GB boundary
 139  *                                      false: allocation crosses same
 140  *                                      4GB boundary
 141  */
 142 static inline bool megasas_check_same_4gb_region
 143         (struct megasas_instance *instance, dma_addr_t start_addr, size_t size)
 144 {
 145         dma_addr_t end_addr;
 146
 147         end_addr = start_addr + size;
 148
 149         if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) {
 150                 dev_err(&instance->pdev->dev,
 151                         "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n",
 152                         (unsigned long long)start_addr,
 153                         (unsigned long long)end_addr);
 154                 return false;
 155         }
 156
 157         return true;
 158 }
 159
 160 /**
 161  * megasas_enable_intr_fusion - Enables interrupts
 162  * @instance:   adapter's soft instance
 163  */
 164 static void
 165 megasas_enable_intr_fusion(struct megasas_instance *instance)
 166 {
 167         struct megasas_register_set __iomem *regs;
 168         regs = instance->reg_set;
 169
 170         instance->mask_interrupts = 0;
 171         /* For Thunderbolt/Invader also clear intr on enable */
 172         writel(~0, &regs->outbound_intr_status);
 173         readl(&regs->outbound_intr_status);
 174
 175         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 176
 177         /* Dummy readl to force pci flush */
 178         dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n",
 179                  __func__, readl(&regs->outbound_intr_mask));
 180 }
 181
 182 /**
 183  * megasas_disable_intr_fusion - Disables interrupt
 184  * @instance:   adapter's soft instance
 185  */
 186 static void
 187 megasas_disable_intr_fusion(struct megasas_instance *instance)
 188 {
 189         u32 mask = 0xFFFFFFFF;
 190         struct megasas_register_set __iomem *regs;
 191         regs = instance->reg_set;
 192         instance->mask_interrupts = 1;
 193
 194         writel(mask, &regs->outbound_intr_mask);
 195         /* Dummy readl to force pci flush */
 196         dev_info(&instance->pdev->dev, "%s is called outbound_intr_mask:0x%08x\n",
 197                  __func__, readl(&regs->outbound_intr_mask));
 198 }
 199
 200 int
 201 megasas_clear_intr_fusion(struct megasas_instance *instance)
 202 {
 203         u32 status;
 204         struct megasas_register_set __iomem *regs;
 205         regs = instance->reg_set;
 206         /*
 207          * Check if it is our interrupt
 208          */
 209         status = megasas_readl(instance,
 210                                &regs->outbound_intr_status);
 211
 212         if (status & 1) {
 213                 writel(status, &regs->outbound_intr_status);
 214                 readl(&regs->outbound_intr_status);
 215                 return 1;
 216         }
 217         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 218                 return 0;
 219
 220         return 1;
 221 }
 222
 223 static inline void
 224 megasas_sdev_busy_inc(struct megasas_instance *instance,
 225                       struct scsi_cmnd *scmd)
 226 {
 227         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
 228                 struct MR_PRIV_DEVICE *mr_device_priv_data =
 229                         scmd->device->hostdata;
 230                 atomic_inc(&mr_device_priv_data->sdev_priv_busy);
 231         }
 232 }
 233
 234 static inline void
 235 megasas_sdev_busy_dec(struct megasas_instance *instance,
 236                       struct scsi_cmnd *scmd)
 237 {
 238         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
 239                 struct MR_PRIV_DEVICE *mr_device_priv_data =
 240                         scmd->device->hostdata;
 241                 atomic_dec(&mr_device_priv_data->sdev_priv_busy);
 242         }
 243 }
 244
 245 static inline int
 246 megasas_sdev_busy_read(struct megasas_instance *instance,
 247                        struct scsi_cmnd *scmd)
 248 {
 249         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
 250                 struct MR_PRIV_DEVICE *mr_device_priv_data =
 251                         scmd->device->hostdata;
 252                 return atomic_read(&mr_device_priv_data->sdev_priv_busy);
 253         }
 254         return 0;
 255 }
 256
 257 /**
 258  * megasas_get_cmd_fusion -     Get a command from the free pool
 259  * @instance:           Adapter soft state
 260  * @blk_tag:            Command tag
 261  *
 262  * Returns a blk_tag indexed mpt frame
 263  */
 264 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 265                                                   *instance, u32 blk_tag)
 266 {
 267         struct fusion_context *fusion;
 268
 269         fusion = instance->ctrl_context;
 270         return fusion->cmd_list[blk_tag];
 271 }
 272
 273 /**
 274  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 275  * @instance:           Adapter soft state
 276  * @cmd:                Command packet to be returned to free command pool
 277  */
 278 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 279         struct megasas_cmd_fusion *cmd)
 280 {
 281         cmd->scmd = NULL;
 282         memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 283         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 284         cmd->cmd_completed = false;
 285 }
 286
 287 /**
 288  * megasas_write_64bit_req_desc -       PCI writes 64bit request descriptor
 289  * @instance:                           Adapter soft state
 290  * @req_desc:                           64bit Request descriptor
 291  */
 292 static void
 293 megasas_write_64bit_req_desc(struct megasas_instance *instance,
 294                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 295 {
 296 #if defined(writeq) && defined(CONFIG_64BIT)
 297         u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
 298                 le32_to_cpu(req_desc->u.low));
 299         writeq(req_data, &instance->reg_set->inbound_low_queue_port);
 300 #else
 301         unsigned long flags;
 302         spin_lock_irqsave(&instance->hba_lock, flags);
 303         writel(le32_to_cpu(req_desc->u.low),
 304                 &instance->reg_set->inbound_low_queue_port);
 305         writel(le32_to_cpu(req_desc->u.high),
 306                 &instance->reg_set->inbound_high_queue_port);
 307         spin_unlock_irqrestore(&instance->hba_lock, flags);
 308 #endif
 309 }
 310
 311 /**
 312  * megasas_fire_cmd_fusion -    Sends command to the FW
 313  * @instance:                   Adapter soft state
 314  * @req_desc:                   32bit or 64bit Request descriptor
 315  *
 316  * Perform PCI Write. AERO SERIES supports 32 bit Descriptor.
 317  * Prior to AERO_SERIES support 64 bit Descriptor.
 318  */
 319 static void
 320 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 321                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 322 {
 323         if (instance->atomic_desc_support)
 324                 writel(le32_to_cpu(req_desc->u.low),
 325                         &instance->reg_set->inbound_single_queue_port);
 326         else
 327                 megasas_write_64bit_req_desc(instance, req_desc);
 328 }
 329
 330 /**
 331  * megasas_fusion_update_can_queue -    Do all Adapter Queue depth related calculations here
 332  * @instance:           Adapter soft state
 333  * @fw_boot_context:    Whether this function called during probe or after OCR
 334  *
 335  * This function is only for fusion controllers.
 336  * Update host can queue, if firmware downgrade max supported firmware commands.
 337  * Firmware upgrade case will be skiped because underlying firmware has
 338  * more resource than exposed to the OS.
 339  *
 340  */
 341 static void
 342 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
 343 {
 344         u16 cur_max_fw_cmds = 0;
 345         u16 ldio_threshold = 0;
 346
 347         /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */
 348         if (instance->adapter_type < VENTURA_SERIES)
 349                 cur_max_fw_cmds =
 350                 megasas_readl(instance,
 351                               &instance->reg_set->outbound_scratch_pad_2) & 0x00FFFF;
 352
 353         if (dual_qdepth_disable || !cur_max_fw_cmds)
 354                 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
 355         else
 356                 ldio_threshold =
 357                         (instance->instancet->read_fw_status_reg(instance) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
 358
 359         dev_info(&instance->pdev->dev,
 360                  "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n",
 361                  cur_max_fw_cmds, ldio_threshold);
 362
 363         if (fw_boot_context == OCR_CONTEXT) {
 364                 cur_max_fw_cmds = cur_max_fw_cmds - 1;
 365                 if (cur_max_fw_cmds < instance->max_fw_cmds) {
 366                         instance->cur_can_queue =
 367                                 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
 368                                                 MEGASAS_FUSION_IOCTL_CMDS);
 369                         instance->host->can_queue = instance->cur_can_queue;
 370                         instance->ldio_threshold = ldio_threshold;
 371                 }
 372         } else {
 373                 instance->max_fw_cmds = cur_max_fw_cmds;
 374                 instance->ldio_threshold = ldio_threshold;
 375
 376                 if (reset_devices)
 377                         instance->max_fw_cmds = min(instance->max_fw_cmds,
 378                                                 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
 379                 /*
 380                 * Reduce the max supported cmds by 1. This is to ensure that the
 381                 * reply_q_sz (1 more than the max cmd that driver may send)
 382                 * does not exceed max cmds that the FW can support
 383                 */
 384                 instance->max_fw_cmds = instance->max_fw_cmds-1;
 385         }
 386 }
 387
 388 static inline void
 389 megasas_get_msix_index(struct megasas_instance *instance,
 390                        struct scsi_cmnd *scmd,
 391                        struct megasas_cmd_fusion *cmd,
 392                        u8 data_arms)
 393 {
 394         if (instance->perf_mode == MR_BALANCED_PERF_MODE &&
 395             (megasas_sdev_busy_read(instance, scmd) >
 396              (data_arms * MR_DEVICE_HIGH_IOPS_DEPTH))) {
 397                 cmd->request_desc->SCSIIO.MSIxIndex =
 398                         mega_mod64((atomic64_add_return(1, &instance->high_iops_outstanding) /
 399                                         MR_HIGH_IOPS_BATCH_COUNT), instance->low_latency_index_start);
 400         } else if (instance->msix_load_balance) {
 401                 cmd->request_desc->SCSIIO.MSIxIndex =
 402                         (mega_mod64(atomic64_add_return(1, &instance->total_io_count),
 403                                 instance->msix_vectors));
 404         } else if (instance->host->nr_hw_queues > 1) {
 405                 u32 tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
 406
 407                 cmd->request_desc->SCSIIO.MSIxIndex = blk_mq_unique_tag_to_hwq(tag) +
 408                         instance->low_latency_index_start;
 409         } else {
 410                 cmd->request_desc->SCSIIO.MSIxIndex =
 411                         instance->reply_map[raw_smp_processor_id()];
 412         }
 413 }
 414
 415 /**
 416  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
 417  * @instance:           Adapter soft state
 418  */
 419 void
 420 megasas_free_cmds_fusion(struct megasas_instance *instance)
 421 {
 422         int i;
 423         struct fusion_context *fusion = instance->ctrl_context;
 424         struct megasas_cmd_fusion *cmd;
 425
 426         if (fusion->sense)
 427                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 428                               fusion->sense_phys_addr);
 429
 430         /* SG */
 431         if (fusion->cmd_list) {
 432                 for (i = 0; i < instance->max_mpt_cmds; i++) {
 433                         cmd = fusion->cmd_list[i];
 434                         if (cmd) {
 435                                 if (cmd->sg_frame)
 436                                         dma_pool_free(fusion->sg_dma_pool,
 437                                                       cmd->sg_frame,
 438                                                       cmd->sg_frame_phys_addr);
 439                         }
 440                         kfree(cmd);
 441                 }
 442                 kfree(fusion->cmd_list);
 443         }
 444
 445         if (fusion->sg_dma_pool) {
 446                 dma_pool_destroy(fusion->sg_dma_pool);
 447                 fusion->sg_dma_pool = NULL;
 448         }
 449         if (fusion->sense_dma_pool) {
 450                 dma_pool_destroy(fusion->sense_dma_pool);
 451                 fusion->sense_dma_pool = NULL;
 452         }
 453
 454
 455         /* Reply Frame, Desc*/
 456         if (instance->is_rdpq)
 457                 megasas_free_rdpq_fusion(instance);
 458         else
 459                 megasas_free_reply_fusion(instance);
 460
 461         /* Request Frame, Desc*/
 462         if (fusion->req_frames_desc)
 463                 dma_free_coherent(&instance->pdev->dev,
 464                         fusion->request_alloc_sz, fusion->req_frames_desc,
 465                         fusion->req_frames_desc_phys);
 466         if (fusion->io_request_frames)
 467                 dma_pool_free(fusion->io_request_frames_pool,
 468                         fusion->io_request_frames,
 469                         fusion->io_request_frames_phys);
 470         if (fusion->io_request_frames_pool) {
 471                 dma_pool_destroy(fusion->io_request_frames_pool);
 472                 fusion->io_request_frames_pool = NULL;
 473         }
 474 }
 475
 476 /**
 477  * megasas_create_sg_sense_fusion -     Creates DMA pool for cmd frames
 478  * @instance:                   Adapter soft state
 479  *
 480  */
 481 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 482 {
 483         int i;
 484         u16 max_cmd;
 485         struct fusion_context *fusion;
 486         struct megasas_cmd_fusion *cmd;
 487         int sense_sz;
 488         u32 offset;
 489
 490         fusion = instance->ctrl_context;
 491         max_cmd = instance->max_fw_cmds;
 492         sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
 493
 494         fusion->sg_dma_pool =
 495                         dma_pool_create("mr_sg", &instance->pdev->dev,
 496                                 instance->max_chain_frame_sz,
 497                                 MR_DEFAULT_NVME_PAGE_SIZE, 0);
 498         /* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
 499         fusion->sense_dma_pool =
 500                         dma_pool_create("mr_sense", &instance->pdev->dev,
 501                                 sense_sz, 64, 0);
 502
 503         if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
 504                 dev_err(&instance->pdev->dev,
 505                         "Failed from %s %d\n",  __func__, __LINE__);
 506                 return -ENOMEM;
 507         }
 508
 509         fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 510                                        GFP_KERNEL, &fusion->sense_phys_addr);
 511         if (!fusion->sense) {
 512                 dev_err(&instance->pdev->dev,
 513                         "failed from %s %d\n",  __func__, __LINE__);
 514                 return -ENOMEM;
 515         }
 516
 517         /* sense buffer, request frame and reply desc pool requires to be in
 518          * same 4 gb region. Below function will check this.
 519          * In case of failure, new pci pool will be created with updated
 520          * alignment.
 521          * Older allocation and pool will be destroyed.
 522          * Alignment will be used such a way that next allocation if success,
 523          * will always meet same 4gb region requirement.
 524          * Actual requirement is not alignment, but we need start and end of
 525          * DMA address must have same upper 32 bit address.
 526          */
 527
 528         if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
 529                                            sense_sz)) {
 530                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 531                               fusion->sense_phys_addr);
 532                 fusion->sense = NULL;
 533                 dma_pool_destroy(fusion->sense_dma_pool);
 534
 535                 fusion->sense_dma_pool =
 536                         dma_pool_create("mr_sense_align", &instance->pdev->dev,
 537                                         sense_sz, roundup_pow_of_two(sense_sz),
 538                                         0);
 539                 if (!fusion->sense_dma_pool) {
 540                         dev_err(&instance->pdev->dev,
 541                                 "Failed from %s %d\n",  __func__, __LINE__);
 542                         return -ENOMEM;
 543                 }
 544                 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 545                                                GFP_KERNEL,
 546                                                &fusion->sense_phys_addr);
 547                 if (!fusion->sense) {
 548                         dev_err(&instance->pdev->dev,
 549                                 "failed from %s %d\n",  __func__, __LINE__);
 550                         return -ENOMEM;
 551                 }
 552         }
 553
 554         /*
 555          * Allocate and attach a frame to each of the commands in cmd_list
 556          */
 557         for (i = 0; i < max_cmd; i++) {
 558                 cmd = fusion->cmd_list[i];
 559                 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
 560                                         GFP_KERNEL, &cmd->sg_frame_phys_addr);
 561
 562                 offset = SCSI_SENSE_BUFFERSIZE * i;
 563                 cmd->sense = (u8 *)fusion->sense + offset;
 564                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 565
 566                 if (!cmd->sg_frame) {
 567                         dev_err(&instance->pdev->dev,
 568                                 "Failed from %s %d\n",  __func__, __LINE__);
 569                         return -ENOMEM;
 570                 }
 571         }
 572
 573         /* create sense buffer for the raid 1/10 fp */
 574         for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
 575                 cmd = fusion->cmd_list[i];
 576                 offset = SCSI_SENSE_BUFFERSIZE * i;
 577                 cmd->sense = (u8 *)fusion->sense + offset;
 578                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 579
 580         }
 581
 582         return 0;
 583 }
 584
 585 static int
 586 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
 587 {
 588         u32 max_mpt_cmd, i, j;
 589         struct fusion_context *fusion;
 590
 591         fusion = instance->ctrl_context;
 592
 593         max_mpt_cmd = instance->max_mpt_cmds;
 594
 595         /*
 596          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
 597          * Allocate the dynamic array first and then allocate individual
 598          * commands.
 599          */
 600         fusion->cmd_list =
 601                 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *),
 602                         GFP_KERNEL);
 603         if (!fusion->cmd_list) {
 604                 dev_err(&instance->pdev->dev,
 605                         "Failed from %s %d\n",  __func__, __LINE__);
 606                 return -ENOMEM;
 607         }
 608
 609         for (i = 0; i < max_mpt_cmd; i++) {
 610                 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
 611                                               GFP_KERNEL);
 612                 if (!fusion->cmd_list[i]) {
 613                         for (j = 0; j < i; j++)
 614                                 kfree(fusion->cmd_list[j]);
 615                         kfree(fusion->cmd_list);
 616                         dev_err(&instance->pdev->dev,
 617                                 "Failed from %s %d\n",  __func__, __LINE__);
 618                         return -ENOMEM;
 619                 }
 620         }
 621
 622         return 0;
 623 }
 624
 625 static int
 626 megasas_alloc_request_fusion(struct megasas_instance *instance)
 627 {
 628         struct fusion_context *fusion;
 629
 630         fusion = instance->ctrl_context;
 631
 632 retry_alloc:
 633         fusion->io_request_frames_pool =
 634                         dma_pool_create("mr_ioreq", &instance->pdev->dev,
 635                                 fusion->io_frames_alloc_sz, 16, 0);
 636
 637         if (!fusion->io_request_frames_pool) {
 638                 dev_err(&instance->pdev->dev,
 639                         "Failed from %s %d\n",  __func__, __LINE__);
 640                 return -ENOMEM;
 641         }
 642
 643         fusion->io_request_frames =
 644                         dma_pool_alloc(fusion->io_request_frames_pool,
 645                                 GFP_KERNEL | __GFP_NOWARN,
 646                                 &fusion->io_request_frames_phys);
 647         if (!fusion->io_request_frames) {
 648                 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
 649                         instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
 650                         dma_pool_destroy(fusion->io_request_frames_pool);
 651                         megasas_configure_queue_sizes(instance);
 652                         goto retry_alloc;
 653                 } else {
 654                         dev_err(&instance->pdev->dev,
 655                                 "Failed from %s %d\n",  __func__, __LINE__);
 656                         return -ENOMEM;
 657                 }
 658         }
 659
 660         if (!megasas_check_same_4gb_region(instance,
 661                                            fusion->io_request_frames_phys,
 662                                            fusion->io_frames_alloc_sz)) {
 663                 dma_pool_free(fusion->io_request_frames_pool,
 664                               fusion->io_request_frames,
 665                               fusion->io_request_frames_phys);
 666                 fusion->io_request_frames = NULL;
 667                 dma_pool_destroy(fusion->io_request_frames_pool);
 668
 669                 fusion->io_request_frames_pool =
 670                         dma_pool_create("mr_ioreq_align",
 671                                         &instance->pdev->dev,
 672                                         fusion->io_frames_alloc_sz,
 673                                         roundup_pow_of_two(fusion->io_frames_alloc_sz),
 674                                         0);
 675
 676                 if (!fusion->io_request_frames_pool) {
 677                         dev_err(&instance->pdev->dev,
 678                                 "Failed from %s %d\n",  __func__, __LINE__);
 679                         return -ENOMEM;
 680                 }
 681
 682                 fusion->io_request_frames =
 683                         dma_pool_alloc(fusion->io_request_frames_pool,
 684                                        GFP_KERNEL | __GFP_NOWARN,
 685                                        &fusion->io_request_frames_phys);
 686
 687                 if (!fusion->io_request_frames) {
 688                         dev_err(&instance->pdev->dev,
 689                                 "Failed from %s %d\n",  __func__, __LINE__);
 690                         return -ENOMEM;
 691                 }
 692         }
 693
 694         fusion->req_frames_desc =
 695                 dma_alloc_coherent(&instance->pdev->dev,
 696                                    fusion->request_alloc_sz,
 697                                    &fusion->req_frames_desc_phys, GFP_KERNEL);
 698         if (!fusion->req_frames_desc) {
 699                 dev_err(&instance->pdev->dev,
 700                         "Failed from %s %d\n",  __func__, __LINE__);
 701                 return -ENOMEM;
 702         }
 703
 704         return 0;
 705 }
 706
 707 static int
 708 megasas_alloc_reply_fusion(struct megasas_instance *instance)
 709 {
 710         int i, count;
 711         struct fusion_context *fusion;
 712         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 713         fusion = instance->ctrl_context;
 714
 715         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 716         count += instance->iopoll_q_count;
 717
 718         fusion->reply_frames_desc_pool =
 719                         dma_pool_create("mr_reply", &instance->pdev->dev,
 720                                 fusion->reply_alloc_sz * count, 16, 0);
 721
 722         if (!fusion->reply_frames_desc_pool) {
 723                 dev_err(&instance->pdev->dev,
 724                         "Failed from %s %d\n",  __func__, __LINE__);
 725                 return -ENOMEM;
 726         }
 727
 728         fusion->reply_frames_desc[0] =
 729                 dma_pool_alloc(fusion->reply_frames_desc_pool,
 730                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
 731         if (!fusion->reply_frames_desc[0]) {
 732                 dev_err(&instance->pdev->dev,
 733                         "Failed from %s %d\n",  __func__, __LINE__);
 734                 return -ENOMEM;
 735         }
 736
 737         if (!megasas_check_same_4gb_region(instance,
 738                                            fusion->reply_frames_desc_phys[0],
 739                                            (fusion->reply_alloc_sz * count))) {
 740                 dma_pool_free(fusion->reply_frames_desc_pool,
 741                               fusion->reply_frames_desc[0],
 742                               fusion->reply_frames_desc_phys[0]);
 743                 fusion->reply_frames_desc[0] = NULL;
 744                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 745
 746                 fusion->reply_frames_desc_pool =
 747                         dma_pool_create("mr_reply_align",
 748                                         &instance->pdev->dev,
 749                                         fusion->reply_alloc_sz * count,
 750                                         roundup_pow_of_two(fusion->reply_alloc_sz * count),
 751                                         0);
 752
 753                 if (!fusion->reply_frames_desc_pool) {
 754                         dev_err(&instance->pdev->dev,
 755                                 "Failed from %s %d\n",  __func__, __LINE__);
 756                         return -ENOMEM;
 757                 }
 758
 759                 fusion->reply_frames_desc[0] =
 760                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 761                                        GFP_KERNEL,
 762                                        &fusion->reply_frames_desc_phys[0]);
 763
 764                 if (!fusion->reply_frames_desc[0]) {
 765                         dev_err(&instance->pdev->dev,
 766                                 "Failed from %s %d\n",  __func__, __LINE__);
 767                         return -ENOMEM;
 768                 }
 769         }
 770
 771         reply_desc = fusion->reply_frames_desc[0];
 772         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 773                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 774
 775         /* This is not a rdpq mode, but driver still populate
 776          * reply_frame_desc array to use same msix index in ISR path.
 777          */
 778         for (i = 0; i < (count - 1); i++)
 779                 fusion->reply_frames_desc[i + 1] =
 780                         fusion->reply_frames_desc[i] +
 781                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
 782
 783         return 0;
 784 }
 785
 786 static int
 787 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 788 {
 789         int i, j, k, msix_count;
 790         struct fusion_context *fusion;
 791         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 792         union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
 793         dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
 794         u8 dma_alloc_count, abs_index;
 795         u32 chunk_size, array_size, offset;
 796
 797         fusion = instance->ctrl_context;
 798         chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
 799         array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
 800                      MAX_MSIX_QUEUES_FUSION;
 801
 802         fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev,
 803                                                array_size, &fusion->rdpq_phys,
 804                                                GFP_KERNEL);
 805         if (!fusion->rdpq_virt) {
 806                 dev_err(&instance->pdev->dev,
 807                         "Failed from %s %d\n",  __func__, __LINE__);
 808                 return -ENOMEM;
 809         }
 810
 811         msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 812         msix_count += instance->iopoll_q_count;
 813
 814         fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
 815                                                          &instance->pdev->dev,
 816                                                          chunk_size, 16, 0);
 817         fusion->reply_frames_desc_pool_align =
 818                                 dma_pool_create("mr_rdpq_align",
 819                                                 &instance->pdev->dev,
 820                                                 chunk_size,
 821                                                 roundup_pow_of_two(chunk_size),
 822                                                 0);
 823
 824         if (!fusion->reply_frames_desc_pool ||
 825             !fusion->reply_frames_desc_pool_align) {
 826                 dev_err(&instance->pdev->dev,
 827                         "Failed from %s %d\n",  __func__, __LINE__);
 828                 return -ENOMEM;
 829         }
 830
 831 /*
 832  * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
 833  * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
 834  * within 4GB boundary and also reply queues in a set must have same
 835  * upper 32-bits in their memory address. so here driver is allocating the
 836  * DMA'able memory for reply queues according. Driver uses limitation of
 837  * VENTURA_SERIES to manage INVADER_SERIES as well.
 838  */
 839         dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
 840
 841         for (i = 0; i < dma_alloc_count; i++) {
 842                 rdpq_chunk_virt[i] =
 843                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 844                                        GFP_KERNEL, &rdpq_chunk_phys[i]);
 845                 if (!rdpq_chunk_virt[i]) {
 846                         dev_err(&instance->pdev->dev,
 847                                 "Failed from %s %d\n",  __func__, __LINE__);
 848                         return -ENOMEM;
 849                 }
 850                 /* reply desc pool requires to be in same 4 gb region.
 851                  * Below function will check this.
 852                  * In case of failure, new pci pool will be created with updated
 853                  * alignment.
 854                  * For RDPQ buffers, driver always allocate two separate pci pool.
 855                  * Alignment will be used such a way that next allocation if
 856                  * success, will always meet same 4gb region requirement.
 857                  * rdpq_tracker keep track of each buffer's physical,
 858                  * virtual address and pci pool descriptor. It will help driver
 859                  * while freeing the resources.
 860                  *
 861                  */
 862                 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
 863                                                    chunk_size)) {
 864                         dma_pool_free(fusion->reply_frames_desc_pool,
 865                                       rdpq_chunk_virt[i],
 866                                       rdpq_chunk_phys[i]);
 867
 868                         rdpq_chunk_virt[i] =
 869                                 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
 870                                                GFP_KERNEL, &rdpq_chunk_phys[i]);
 871                         if (!rdpq_chunk_virt[i]) {
 872                                 dev_err(&instance->pdev->dev,
 873                                         "Failed from %s %d\n",
 874                                         __func__, __LINE__);
 875                                 return -ENOMEM;
 876                         }
 877                         fusion->rdpq_tracker[i].dma_pool_ptr =
 878                                         fusion->reply_frames_desc_pool_align;
 879                 } else {
 880                         fusion->rdpq_tracker[i].dma_pool_ptr =
 881                                         fusion->reply_frames_desc_pool;
 882                 }
 883
 884                 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
 885                 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
 886         }
 887
 888         for (k = 0; k < dma_alloc_count; k++) {
 889                 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
 890                         abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
 891
 892                         if (abs_index == msix_count)
 893                                 break;
 894                         offset = fusion->reply_alloc_sz * i;
 895                         fusion->rdpq_virt[abs_index].RDPQBaseAddress =
 896                                         cpu_to_le64(rdpq_chunk_phys[k] + offset);
 897                         fusion->reply_frames_desc_phys[abs_index] =
 898                                         rdpq_chunk_phys[k] + offset;
 899                         fusion->reply_frames_desc[abs_index] =
 900                                         (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
 901
 902                         reply_desc = fusion->reply_frames_desc[abs_index];
 903                         for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
 904                                 reply_desc->Words = ULLONG_MAX;
 905                 }
 906         }
 907
 908         return 0;
 909 }
 910
 911 static void
 912 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 913
 914         int i;
 915         struct fusion_context *fusion;
 916
 917         fusion = instance->ctrl_context;
 918
 919         for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
 920                 if (fusion->rdpq_tracker[i].pool_entry_virt)
 921                         dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
 922                                       fusion->rdpq_tracker[i].pool_entry_virt,
 923                                       fusion->rdpq_tracker[i].pool_entry_phys);
 924
 925         }
 926
 927         dma_pool_destroy(fusion->reply_frames_desc_pool);
 928         dma_pool_destroy(fusion->reply_frames_desc_pool_align);
 929
 930         if (fusion->rdpq_virt)
 931                 dma_free_coherent(&instance->pdev->dev,
 932                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 933                         fusion->rdpq_virt, fusion->rdpq_phys);
 934 }
 935
 936 static void
 937 megasas_free_reply_fusion(struct megasas_instance *instance) {
 938
 939         struct fusion_context *fusion;
 940
 941         fusion = instance->ctrl_context;
 942
 943         if (fusion->reply_frames_desc[0])
 944                 dma_pool_free(fusion->reply_frames_desc_pool,
 945                         fusion->reply_frames_desc[0],
 946                         fusion->reply_frames_desc_phys[0]);
 947
 948         dma_pool_destroy(fusion->reply_frames_desc_pool);
 949
 950 }
 951
 952
 953 /**
 954  * megasas_alloc_cmds_fusion -  Allocates the command packets
 955  * @instance:           Adapter soft state
 956  *
 957  *
 958  * Each frame has a 32-bit field called context. This context is used to get
 959  * back the megasas_cmd_fusion from the frame when a frame gets completed
 960  * In this driver, the 32 bit values are the indices into an array cmd_list.
 961  * This array is used only to look up the megasas_cmd_fusion given the context.
 962  * The free commands themselves are maintained in a linked list called cmd_pool.
 963  *
 964  * cmds are formed in the io_request and sg_frame members of the
 965  * megasas_cmd_fusion. The context field is used to get a request descriptor
 966  * and is used as SMID of the cmd.
 967  * SMID value range is from 1 to max_fw_cmds.
 968  */
 969 static int
 970 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 971 {
 972         int i;
 973         struct fusion_context *fusion;
 974         struct megasas_cmd_fusion *cmd;
 975         u32 offset;
 976         dma_addr_t io_req_base_phys;
 977         u8 *io_req_base;
 978
 979
 980         fusion = instance->ctrl_context;
 981
 982         if (megasas_alloc_request_fusion(instance))
 983                 goto fail_exit;
 984
 985         if (instance->is_rdpq) {
 986                 if (megasas_alloc_rdpq_fusion(instance))
 987                         goto fail_exit;
 988         } else
 989                 if (megasas_alloc_reply_fusion(instance))
 990                         goto fail_exit;
 991
 992         if (megasas_alloc_cmdlist_fusion(instance))
 993                 goto fail_exit;
 994
 995         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 996         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 997         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 998
 999         /*
1000          * Add all the commands to command pool (fusion->cmd_pool)
1001          */
1002
1003         /* SMID 0 is reserved. Set SMID/index from 1 */
1004         for (i = 0; i < instance->max_mpt_cmds; i++) {
1005                 cmd = fusion->cmd_list[i];
1006                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
1007                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
1008                 cmd->index = i + 1;
1009                 cmd->scmd = NULL;
1010                 cmd->sync_cmd_idx =
1011                 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
1012                                 (i - instance->max_scsi_cmds) :
1013                                 (u32)ULONG_MAX; /* Set to Invalid */
1014                 cmd->instance = instance;
1015                 cmd->io_request =
1016                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
1017                   (io_req_base + offset);
1018                 memset(cmd->io_request, 0,
1019                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
1020                 cmd->io_request_phys_addr = io_req_base_phys + offset;
1021                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
1022         }
1023
1024         if (megasas_create_sg_sense_fusion(instance))
1025                 goto fail_exit;
1026
1027         return 0;
1028
1029 fail_exit:
1030         megasas_free_cmds_fusion(instance);
1031         return -ENOMEM;
1032 }
1033
1034 /**
1035  * wait_and_poll -      Issues a polling command
1036  * @instance:                   Adapter soft state
1037  * @cmd:                        Command packet to be issued
1038  * @seconds:                    Maximum poll time
1039  *
1040  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
1041  */
1042 int
1043 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
1044         int seconds)
1045 {
1046         int i;
1047         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1048         u32 status_reg;
1049
1050         u32 msecs = seconds * 1000;
1051
1052         /*
1053          * Wait for cmd_status to change
1054          */
1055         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
1056                 rmb();
1057                 msleep(20);
1058                 if (!(i % 5000)) {
1059                         status_reg = instance->instancet->read_fw_status_reg(instance)
1060                                         & MFI_STATE_MASK;
1061                         if (status_reg == MFI_STATE_FAULT)
1062                                 break;
1063                 }
1064         }
1065
1066         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
1067                 return DCMD_TIMEOUT;
1068         else if (frame_hdr->cmd_status == MFI_STAT_OK)
1069                 return DCMD_SUCCESS;
1070         else
1071                 return DCMD_FAILED;
1072 }
1073
1074 /**
1075  * megasas_ioc_init_fusion -    Initializes the FW
1076  * @instance:           Adapter soft state
1077  *
1078  * Issues the IOC Init cmd
1079  */
1080 int
1081 megasas_ioc_init_fusion(struct megasas_instance *instance)
1082 {
1083         struct megasas_init_frame *init_frame;
1084         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
1085         dma_addr_t      ioc_init_handle;
1086         struct megasas_cmd *cmd;
1087         u8 ret, cur_rdpq_mode;
1088         struct fusion_context *fusion;
1089         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
1090         int i;
1091         struct megasas_header *frame_hdr;
1092         const char *sys_info;
1093         MFI_CAPABILITIES *drv_ops;
1094         u32 scratch_pad_1;
1095         ktime_t time;
1096         bool cur_fw_64bit_dma_capable;
1097         bool cur_intr_coalescing;
1098
1099         fusion = instance->ctrl_context;
1100
1101         ioc_init_handle = fusion->ioc_init_request_phys;
1102         IOCInitMessage = fusion->ioc_init_request;
1103
1104         cmd = fusion->ioc_init_cmd;
1105
1106         scratch_pad_1 = megasas_readl
1107                 (instance, &instance->reg_set->outbound_scratch_pad_1);
1108
1109         cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
1110
1111         if (instance->adapter_type == INVADER_SERIES) {
1112                 cur_fw_64bit_dma_capable =
1113                         (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
1114
1115                 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
1116                         dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1117                                 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1118                         megaraid_sas_kill_hba(instance);
1119                         ret = 1;
1120                         goto fail_fw_init;
1121                 }
1122         }
1123
1124         if (instance->is_rdpq && !cur_rdpq_mode) {
1125                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1126                         " from RDPQ mode to non RDPQ mode\n");
1127                 ret = 1;
1128                 goto fail_fw_init;
1129         }
1130
1131         cur_intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
1132                                                         true : false;
1133
1134         if ((instance->low_latency_index_start ==
1135                 MR_HIGH_IOPS_QUEUE_COUNT) && cur_intr_coalescing)
1136                 instance->perf_mode = MR_BALANCED_PERF_MODE;
1137
1138         dev_info(&instance->pdev->dev, "Performance mode :%s (latency index = %d)\n",
1139                 MEGASAS_PERF_MODE_2STR(instance->perf_mode),
1140                 instance->low_latency_index_start);
1141
1142         instance->fw_sync_cache_support = (scratch_pad_1 &
1143                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1144         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1145                  instance->fw_sync_cache_support ? "Yes" : "No");
1146
1147         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1148
1149         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1150         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1151         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1152         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1153         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1154
1155         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1156         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1157                         cpu_to_le64(fusion->rdpq_phys) :
1158                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1159         IOCInitMessage->MsgFlags = instance->is_rdpq ?
1160                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1161         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1162         IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1163         IOCInitMessage->HostMSIxVectors = instance->msix_vectors + instance->iopoll_q_count;
1164         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1165
1166         time = ktime_get_real();
1167         /* Convert to milliseconds as per FW requirement */
1168         IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1169
1170         init_frame = (struct megasas_init_frame *)cmd->frame;
1171         memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1172
1173         frame_hdr = &cmd->frame->hdr;
1174         frame_hdr->cmd_status = 0xFF;
1175         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1176
1177         init_frame->cmd = MFI_CMD_INIT;
1178         init_frame->cmd_status = 0xFF;
1179
1180         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1181
1182         /* driver support Extended MSIX */
1183         if (instance->adapter_type >= INVADER_SERIES)
1184                 drv_ops->mfi_capabilities.support_additional_msix = 1;
1185         /* driver supports HA / Remote LUN over Fast Path interface */
1186         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1187
1188         drv_ops->mfi_capabilities.support_max_255lds = 1;
1189         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1190         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1191
1192         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1193                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1194
1195         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1196         if (!dual_qdepth_disable)
1197                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1198
1199         drv_ops->mfi_capabilities.support_qd_throttling = 1;
1200         drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1201         drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1202         drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1;
1203
1204         if (instance->consistent_mask_64bit)
1205                 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1206
1207         /* Convert capability to LE32 */
1208         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1209
1210         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1211         if (instance->system_info_buf && sys_info) {
1212                 memcpy(instance->system_info_buf->systemId, sys_info,
1213                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1214                 instance->system_info_buf->systemIdLength =
1215                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1216                 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1217                 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1218         }
1219
1220         init_frame->queue_info_new_phys_addr_hi =
1221                 cpu_to_le32(upper_32_bits(ioc_init_handle));
1222         init_frame->queue_info_new_phys_addr_lo =
1223                 cpu_to_le32(lower_32_bits(ioc_init_handle));
1224         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1225
1226         /*
1227          * Each bit in replyqueue_mask represents one group of MSI-x vectors
1228          * (each group has 8 vectors)
1229          */
1230         switch (instance->perf_mode) {
1231         case MR_BALANCED_PERF_MODE:
1232                 init_frame->replyqueue_mask =
1233                        cpu_to_le16(~(~0 << instance->low_latency_index_start/8));
1234                 break;
1235         case MR_IOPS_PERF_MODE:
1236                 init_frame->replyqueue_mask =
1237                        cpu_to_le16(~(~0 << instance->msix_vectors/8));
1238                 break;
1239         }
1240
1241
1242         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1243         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1244         req_desc.MFAIo.RequestFlags =
1245                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1246                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1247
1248         /*
1249          * disable the intr before firing the init frame
1250          */
1251         instance->instancet->disable_intr(instance);
1252
1253         for (i = 0; i < (10 * 1000); i += 20) {
1254                 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1)
1255                         msleep(20);
1256                 else
1257                         break;
1258         }
1259
1260         /* For AERO also, IOC_INIT requires 64 bit descriptor write */
1261         megasas_write_64bit_req_desc(instance, &req_desc);
1262
1263         wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS);
1264
1265         frame_hdr = &cmd->frame->hdr;
1266         if (frame_hdr->cmd_status != 0) {
1267                 ret = 1;
1268                 goto fail_fw_init;
1269         }
1270
1271         if (instance->adapter_type >= AERO_SERIES) {
1272                 scratch_pad_1 = megasas_readl
1273                         (instance, &instance->reg_set->outbound_scratch_pad_1);
1274
1275                 instance->atomic_desc_support =
1276                         (scratch_pad_1 & MR_ATOMIC_DESCRIPTOR_SUPPORT_OFFSET) ? 1 : 0;
1277
1278                 dev_info(&instance->pdev->dev, "FW supports atomic descriptor\t: %s\n",
1279                         instance->atomic_desc_support ? "Yes" : "No");
1280         }
1281
1282         return 0;
1283
1284 fail_fw_init:
1285         dev_err(&instance->pdev->dev,
1286                 "Init cmd return status FAILED for SCSI host %d\n",
1287                 instance->host->host_no);
1288
1289         return ret;
1290 }
1291
1292 /**
1293  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
1294  * @instance:           Adapter soft state
1295  * @pend:               set to 1, if it is pended jbod map.
1296  *
1297  * Issue Jbod map to the firmware. If it is pended command,
1298  * issue command and return. If it is first instance of jbod map
1299  * issue and receive command.
1300  */
1301 int
1302 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1303         int ret = 0;
1304         size_t pd_seq_map_sz;
1305         struct megasas_cmd *cmd;
1306         struct megasas_dcmd_frame *dcmd;
1307         struct fusion_context *fusion = instance->ctrl_context;
1308         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1309         dma_addr_t pd_seq_h;
1310
1311         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1312         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1313         pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES - 1);
1314
1315         cmd = megasas_get_cmd(instance);
1316         if (!cmd) {
1317                 dev_err(&instance->pdev->dev,
1318                         "Could not get mfi cmd. Fail from %s %d\n",
1319                         __func__, __LINE__);
1320                 return -ENOMEM;
1321         }
1322
1323         dcmd = &cmd->frame->dcmd;
1324
1325         memset(pd_sync, 0, pd_seq_map_sz);
1326         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1327
1328         if (pend) {
1329                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1330                 dcmd->flags = MFI_FRAME_DIR_WRITE;
1331                 instance->jbod_seq_cmd = cmd;
1332         } else {
1333                 dcmd->flags = MFI_FRAME_DIR_READ;
1334         }
1335
1336         dcmd->cmd = MFI_CMD_DCMD;
1337         dcmd->cmd_status = 0xFF;
1338         dcmd->sge_count = 1;
1339         dcmd->timeout = 0;
1340         dcmd->pad_0 = 0;
1341         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1342         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1343
1344         megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1345
1346         if (pend) {
1347                 instance->instancet->issue_dcmd(instance, cmd);
1348                 return 0;
1349         }
1350
1351         /* Below code is only for non pended DCMD */
1352         if (!instance->mask_interrupts)
1353                 ret = megasas_issue_blocked_cmd(instance, cmd,
1354                         MFI_IO_TIMEOUT_SECS);
1355         else
1356                 ret = megasas_issue_polled(instance, cmd);
1357
1358         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1359                 dev_warn(&instance->pdev->dev,
1360                         "driver supports max %d JBOD, but FW reports %d\n",
1361                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1362                 ret = -EINVAL;
1363         }
1364
1365         if (ret == DCMD_TIMEOUT)
1366                 dev_warn(&instance->pdev->dev,
1367                          "%s DCMD timed out, continue without JBOD sequence map\n",
1368                          __func__);
1369
1370         if (ret == DCMD_SUCCESS)
1371                 instance->pd_seq_map_id++;
1372
1373         megasas_return_cmd(instance, cmd);
1374         return ret;
1375 }
1376
1377 /*
1378  * megasas_get_ld_map_info -    Returns FW's ld_map structure
1379  * @instance:                           Adapter soft state
1380  * @pend:                               Pend the command or not
1381  * Issues an internal command (DCMD) to get the FW's controller PD
1382  * list structure.  This information is mainly used to find out SYSTEM
1383  * supported by the FW.
1384  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1385  * dcmd.mbox.b[0]       - number of LDs being sync'd
1386  * dcmd.mbox.b[1]       - 0 - complete command immediately.
1387  *                      - 1 - pend till config change
1388  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1389  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1390  *                              uses extended struct MR_FW_RAID_MAP_EXT
1391  */
1392 static int
1393 megasas_get_ld_map_info(struct megasas_instance *instance)
1394 {
1395         int ret = 0;
1396         struct megasas_cmd *cmd;
1397         struct megasas_dcmd_frame *dcmd;
1398         void *ci;
1399         dma_addr_t ci_h = 0;
1400         u32 size_map_info;
1401         struct fusion_context *fusion;
1402
1403         cmd = megasas_get_cmd(instance);
1404
1405         if (!cmd) {
1406                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1407                 return -ENOMEM;
1408         }
1409
1410         fusion = instance->ctrl_context;
1411
1412         if (!fusion) {
1413                 megasas_return_cmd(instance, cmd);
1414                 return -ENXIO;
1415         }
1416
1417         dcmd = &cmd->frame->dcmd;
1418
1419         size_map_info = fusion->current_map_sz;
1420
1421         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1422         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1423
1424         if (!ci) {
1425                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1426                 megasas_return_cmd(instance, cmd);
1427                 return -ENOMEM;
1428         }
1429
1430         memset(ci, 0, fusion->max_map_sz);
1431         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1432         dcmd->cmd = MFI_CMD_DCMD;
1433         dcmd->cmd_status = 0xFF;
1434         dcmd->sge_count = 1;
1435         dcmd->flags = MFI_FRAME_DIR_READ;
1436         dcmd->timeout = 0;
1437         dcmd->pad_0 = 0;
1438         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1439         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1440
1441         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1442
1443         if (!instance->mask_interrupts)
1444                 ret = megasas_issue_blocked_cmd(instance, cmd,
1445                         MFI_IO_TIMEOUT_SECS);
1446         else
1447                 ret = megasas_issue_polled(instance, cmd);
1448
1449         if (ret == DCMD_TIMEOUT)
1450                 dev_warn(&instance->pdev->dev,
1451                          "%s DCMD timed out, RAID map is disabled\n",
1452                          __func__);
1453
1454         megasas_return_cmd(instance, cmd);
1455
1456         return ret;
1457 }
1458
1459 u8
1460 megasas_get_map_info(struct megasas_instance *instance)
1461 {
1462         struct fusion_context *fusion = instance->ctrl_context;
1463
1464         fusion->fast_path_io = 0;
1465         if (!megasas_get_ld_map_info(instance)) {
1466                 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1467                         fusion->fast_path_io = 1;
1468                         return 0;
1469                 }
1470         }
1471         return 1;
1472 }
1473
1474 /*
1475  * megasas_sync_map_info -      Returns FW's ld_map structure
1476  * @instance:                           Adapter soft state
1477  *
1478  * Issues an internal command (DCMD) to get the FW's controller PD
1479  * list structure.  This information is mainly used to find out SYSTEM
1480  * supported by the FW.
1481  */
1482 int
1483 megasas_sync_map_info(struct megasas_instance *instance)
1484 {
1485         int i;
1486         struct megasas_cmd *cmd;
1487         struct megasas_dcmd_frame *dcmd;
1488         u16 num_lds;
1489         struct fusion_context *fusion;
1490         struct MR_LD_TARGET_SYNC *ci = NULL;
1491         struct MR_DRV_RAID_MAP_ALL *map;
1492         struct MR_LD_RAID  *raid;
1493         struct MR_LD_TARGET_SYNC *ld_sync;
1494         dma_addr_t ci_h = 0;
1495         u32 size_map_info;
1496
1497         cmd = megasas_get_cmd(instance);
1498
1499         if (!cmd) {
1500                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1501                 return -ENOMEM;
1502         }
1503
1504         fusion = instance->ctrl_context;
1505
1506         if (!fusion) {
1507                 megasas_return_cmd(instance, cmd);
1508                 return 1;
1509         }
1510
1511         map = fusion->ld_drv_map[instance->map_id & 1];
1512
1513         num_lds = le16_to_cpu(map->raidMap.ldCount);
1514
1515         dcmd = &cmd->frame->dcmd;
1516
1517         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1518
1519         ci = (struct MR_LD_TARGET_SYNC *)
1520           fusion->ld_map[(instance->map_id - 1) & 1];
1521         memset(ci, 0, fusion->max_map_sz);
1522
1523         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1524
1525         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1526
1527         for (i = 0; i < num_lds; i++, ld_sync++) {
1528                 raid = MR_LdRaidGet(i, map);
1529                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1530                 ld_sync->seqNum = raid->seqNum;
1531         }
1532
1533         size_map_info = fusion->current_map_sz;
1534
1535         dcmd->cmd = MFI_CMD_DCMD;
1536         dcmd->cmd_status = 0xFF;
1537         dcmd->sge_count = 1;
1538         dcmd->flags = MFI_FRAME_DIR_WRITE;
1539         dcmd->timeout = 0;
1540         dcmd->pad_0 = 0;
1541         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1542         dcmd->mbox.b[0] = num_lds;
1543         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1544         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1545
1546         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1547
1548         instance->map_update_cmd = cmd;
1549
1550         instance->instancet->issue_dcmd(instance, cmd);
1551
1552         return 0;
1553 }
1554
1555 /*
1556  * meagasas_display_intel_branding - Display branding string
1557  * @instance: per adapter object
1558  *
1559  * Return nothing.
1560  */
1561 static void
1562 megasas_display_intel_branding(struct megasas_instance *instance)
1563 {
1564         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1565                 return;
1566
1567         switch (instance->pdev->device) {
1568         case PCI_DEVICE_ID_LSI_INVADER:
1569                 switch (instance->pdev->subsystem_device) {
1570                 case MEGARAID_INTEL_RS3DC080_SSDID:
1571                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1572                                 instance->host->host_no,
1573                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1574                         break;
1575                 case MEGARAID_INTEL_RS3DC040_SSDID:
1576                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1577                                 instance->host->host_no,
1578                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1579                         break;
1580                 case MEGARAID_INTEL_RS3SC008_SSDID:
1581                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1582                                 instance->host->host_no,
1583                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1584                         break;
1585                 case MEGARAID_INTEL_RS3MC044_SSDID:
1586                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1587                                 instance->host->host_no,
1588                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1589                         break;
1590                 default:
1591                         break;
1592                 }
1593                 break;
1594         case PCI_DEVICE_ID_LSI_FURY:
1595                 switch (instance->pdev->subsystem_device) {
1596                 case MEGARAID_INTEL_RS3WC080_SSDID:
1597                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1598                                 instance->host->host_no,
1599                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1600                         break;
1601                 case MEGARAID_INTEL_RS3WC040_SSDID:
1602                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1603                                 instance->host->host_no,
1604                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1605                         break;
1606                 default:
1607                         break;
1608                 }
1609                 break;
1610         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1611         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1612                 switch (instance->pdev->subsystem_device) {
1613                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1614                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1615                                 instance->host->host_no,
1616                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1617                         break;
1618                 default:
1619                         break;
1620                 }
1621                 break;
1622         default:
1623                 break;
1624         }
1625 }
1626
1627 /**
1628  * megasas_allocate_raid_maps - Allocate memory for RAID maps
1629  * @instance:                           Adapter soft state
1630  *
1631  * return:                              if success: return 0
1632  *                                      failed:  return -ENOMEM
1633  */
1634 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1635 {
1636         struct fusion_context *fusion;
1637         int i = 0;
1638
1639         fusion = instance->ctrl_context;
1640
1641         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1642
1643         for (i = 0; i < 2; i++) {
1644                 fusion->ld_map[i] = NULL;
1645
1646                 fusion->ld_drv_map[i] = (void *)
1647                         __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1648                                          fusion->drv_map_pages);
1649
1650                 if (!fusion->ld_drv_map[i]) {
1651                         fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1652
1653                         if (!fusion->ld_drv_map[i]) {
1654                                 dev_err(&instance->pdev->dev,
1655                                         "Could not allocate memory for local map"
1656                                         " size requested: %d\n",
1657                                         fusion->drv_map_sz);
1658                                 goto ld_drv_map_alloc_fail;
1659                         }
1660                 }
1661         }
1662
1663         for (i = 0; i < 2; i++) {
1664                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1665                                                        fusion->max_map_sz,
1666                                                        &fusion->ld_map_phys[i],
1667                                                        GFP_KERNEL);
1668                 if (!fusion->ld_map[i]) {
1669                         dev_err(&instance->pdev->dev,
1670                                 "Could not allocate memory for map info %s:%d\n",
1671                                 __func__, __LINE__);
1672                         goto ld_map_alloc_fail;
1673                 }
1674         }
1675
1676         return 0;
1677
1678 ld_map_alloc_fail:
1679         for (i = 0; i < 2; i++) {
1680                 if (fusion->ld_map[i])
1681                         dma_free_coherent(&instance->pdev->dev,
1682                                           fusion->max_map_sz,
1683                                           fusion->ld_map[i],
1684                                           fusion->ld_map_phys[i]);
1685         }
1686
1687 ld_drv_map_alloc_fail:
1688         for (i = 0; i < 2; i++) {
1689                 if (fusion->ld_drv_map[i]) {
1690                         if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1691                                 vfree(fusion->ld_drv_map[i]);
1692                         else
1693                                 free_pages((ulong)fusion->ld_drv_map[i],
1694                                            fusion->drv_map_pages);
1695                 }
1696         }
1697
1698         return -ENOMEM;
1699 }
1700
1701 /**
1702  * megasas_configure_queue_sizes -      Calculate size of request desc queue,
1703  *                                      reply desc queue,
1704  *                                      IO request frame queue, set can_queue.
1705  * @instance:                           Adapter soft state
1706  * @return:                             void
1707  */
1708 static inline
1709 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1710 {
1711         struct fusion_context *fusion;
1712         u16 max_cmd;
1713
1714         fusion = instance->ctrl_context;
1715         max_cmd = instance->max_fw_cmds;
1716
1717         if (instance->adapter_type >= VENTURA_SERIES)
1718                 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1719         else
1720                 instance->max_mpt_cmds = instance->max_fw_cmds;
1721
1722         instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1723         instance->cur_can_queue = instance->max_scsi_cmds;
1724         instance->host->can_queue = instance->cur_can_queue;
1725
1726         fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1727
1728         fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1729                                           instance->max_mpt_cmds;
1730         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1731                                         (fusion->reply_q_depth);
1732         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1733                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1734                  * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1735 }
1736
1737 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1738 {
1739         struct fusion_context *fusion;
1740         struct megasas_cmd *cmd;
1741
1742         fusion = instance->ctrl_context;
1743
1744         cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1745
1746         if (!cmd) {
1747                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1748                         __func__, __LINE__);
1749                 return -ENOMEM;
1750         }
1751
1752         cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1753                                         IOC_INIT_FRAME_SIZE,
1754                                         &cmd->frame_phys_addr, GFP_KERNEL);
1755
1756         if (!cmd->frame) {
1757                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1758                         __func__, __LINE__);
1759                 kfree(cmd);
1760                 return -ENOMEM;
1761         }
1762
1763         fusion->ioc_init_cmd = cmd;
1764         return 0;
1765 }
1766
1767 /**
1768  * megasas_free_ioc_init_cmd -  Free IOC INIT command frame
1769  * @instance:           Adapter soft state
1770  */
1771 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1772 {
1773         struct fusion_context *fusion;
1774
1775         fusion = instance->ctrl_context;
1776
1777         if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1778                 dma_free_coherent(&instance->pdev->dev,
1779                                   IOC_INIT_FRAME_SIZE,
1780                                   fusion->ioc_init_cmd->frame,
1781                                   fusion->ioc_init_cmd->frame_phys_addr);
1782
1783         kfree(fusion->ioc_init_cmd);
1784 }
1785
1786 /**
1787  * megasas_init_adapter_fusion -        Initializes the FW
1788  * @instance:           Adapter soft state
1789  *
1790  * This is the main function for initializing firmware.
1791  */
1792 static u32
1793 megasas_init_adapter_fusion(struct megasas_instance *instance)
1794 {
1795         struct fusion_context *fusion;
1796         u32 scratch_pad_1;
1797         int i = 0, count;
1798         u32 status_reg;
1799
1800         fusion = instance->ctrl_context;
1801
1802         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1803
1804         /*
1805          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1806          */
1807         instance->max_mfi_cmds =
1808                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1809
1810         megasas_configure_queue_sizes(instance);
1811
1812         scratch_pad_1 = megasas_readl(instance,
1813                                       &instance->reg_set->outbound_scratch_pad_1);
1814         /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1815          * Firmware support extended IO chain frame which is 4 times more than
1816          * legacy Firmware.
1817          * Legacy Firmware - Frame size is (8 * 128) = 1K
1818          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1819          */
1820         if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1821                 instance->max_chain_frame_sz =
1822                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1823                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1824         else
1825                 instance->max_chain_frame_sz =
1826                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1827                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1828
1829         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1830                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1831                         instance->max_chain_frame_sz,
1832                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1833                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1834         }
1835
1836         fusion->max_sge_in_main_msg =
1837                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1838                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1839
1840         fusion->max_sge_in_chain =
1841                 instance->max_chain_frame_sz
1842                         / sizeof(union MPI2_SGE_IO_UNION);
1843
1844         instance->max_num_sge =
1845                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1846                         + fusion->max_sge_in_chain - 2);
1847
1848         /* Used for pass thru MFI frame (DCMD) */
1849         fusion->chain_offset_mfi_pthru =
1850                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1851
1852         fusion->chain_offset_io_request =
1853                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1854                  sizeof(union MPI2_SGE_IO_UNION))/16;
1855
1856         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1857         count += instance->iopoll_q_count;
1858
1859         for (i = 0 ; i < count; i++)
1860                 fusion->last_reply_idx[i] = 0;
1861
1862         /*
1863          * For fusion adapters, 3 commands for IOCTL and 8 commands
1864          * for driver's internal DCMDs.
1865          */
1866         instance->max_scsi_cmds = instance->max_fw_cmds -
1867                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1868                                 MEGASAS_FUSION_IOCTL_CMDS);
1869         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1870
1871         for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++)
1872                 atomic_set(&fusion->busy_mq_poll[i], 0);
1873
1874         if (megasas_alloc_ioc_init_frame(instance))
1875                 return 1;
1876
1877         /*
1878          * Allocate memory for descriptors
1879          * Create a pool of commands
1880          */
1881         if (megasas_alloc_cmds(instance))
1882                 goto fail_alloc_mfi_cmds;
1883         if (megasas_alloc_cmds_fusion(instance))
1884                 goto fail_alloc_cmds;
1885
1886         if (megasas_ioc_init_fusion(instance)) {
1887                 status_reg = instance->instancet->read_fw_status_reg(instance);
1888                 if (((status_reg & MFI_STATE_MASK) == MFI_STATE_FAULT) &&
1889                     (status_reg & MFI_RESET_ADAPTER)) {
1890                         /* Do a chip reset and then retry IOC INIT once */
1891                         if (megasas_adp_reset_wait_for_ready
1892                                 (instance, true, 0) == FAILED)
1893                                 goto fail_ioc_init;
1894
1895                         if (megasas_ioc_init_fusion(instance))
1896                                 goto fail_ioc_init;
1897                 } else {
1898                         goto fail_ioc_init;
1899                 }
1900         }
1901
1902         megasas_display_intel_branding(instance);
1903         if (megasas_get_ctrl_info(instance)) {
1904                 dev_err(&instance->pdev->dev,
1905                         "Could not get controller info. Fail from %s %d\n",
1906                         __func__, __LINE__);
1907                 goto fail_ioc_init;
1908         }
1909
1910         instance->flag_ieee = 1;
1911         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1912         instance->threshold_reply_count = instance->max_fw_cmds / 4;
1913         fusion->fast_path_io = 0;
1914
1915         if (megasas_allocate_raid_maps(instance))
1916                 goto fail_ioc_init;
1917
1918         if (!megasas_get_map_info(instance))
1919                 megasas_sync_map_info(instance);
1920
1921         return 0;
1922
1923 fail_ioc_init:
1924         megasas_free_cmds_fusion(instance);
1925 fail_alloc_cmds:
1926         megasas_free_cmds(instance);
1927 fail_alloc_mfi_cmds:
1928         megasas_free_ioc_init_cmd(instance);
1929         return 1;
1930 }
1931
1932 /**
1933  * megasas_fault_detect_work    -       Worker function of
1934  *                                      FW fault handling workqueue.
1935  * @work:       FW fault work struct
1936  */
1937 static void
1938 megasas_fault_detect_work(struct work_struct *work)
1939 {
1940         struct megasas_instance *instance =
1941                 container_of(work, struct megasas_instance,
1942                              fw_fault_work.work);
1943         u32 fw_state, dma_state, status;
1944
1945         /* Check the fw state */
1946         fw_state = instance->instancet->read_fw_status_reg(instance) &
1947                         MFI_STATE_MASK;
1948
1949         if (fw_state == MFI_STATE_FAULT) {
1950                 dma_state = instance->instancet->read_fw_status_reg(instance) &
1951                                 MFI_STATE_DMADONE;
1952                 /* Start collecting crash, if DMA bit is done */
1953                 if (instance->crash_dump_drv_support &&
1954                     instance->crash_dump_app_support && dma_state) {
1955                         megasas_fusion_crash_dump(instance);
1956                 } else {
1957                         if (instance->unload == 0) {
1958                                 status = megasas_reset_fusion(instance->host, 0);
1959                                 if (status != SUCCESS) {
1960                                         dev_err(&instance->pdev->dev,
1961                                                 "Failed from %s %d, do not re-arm timer\n",
1962                                                 __func__, __LINE__);
1963                                         return;
1964                                 }
1965                         }
1966                 }
1967         }
1968
1969         if (instance->fw_fault_work_q)
1970                 queue_delayed_work(instance->fw_fault_work_q,
1971                         &instance->fw_fault_work,
1972                         msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1973 }
1974
1975 int
1976 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1977 {
1978         /* Check if the Fault WQ is already started */
1979         if (instance->fw_fault_work_q)
1980                 return SUCCESS;
1981
1982         INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1983
1984         snprintf(instance->fault_handler_work_q_name,
1985                  sizeof(instance->fault_handler_work_q_name),
1986                  "poll_megasas%d_status", instance->host->host_no);
1987
1988         instance->fw_fault_work_q =
1989                 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1990         if (!instance->fw_fault_work_q) {
1991                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1992                         __func__, __LINE__);
1993                 return FAILED;
1994         }
1995
1996         queue_delayed_work(instance->fw_fault_work_q,
1997                            &instance->fw_fault_work,
1998                            msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1999
2000         return SUCCESS;
2001 }
2002
2003 void
2004 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
2005 {
2006         struct workqueue_struct *wq;
2007
2008         if (instance->fw_fault_work_q) {
2009                 wq = instance->fw_fault_work_q;
2010                 instance->fw_fault_work_q = NULL;
2011                 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
2012                         flush_workqueue(wq);
2013                 destroy_workqueue(wq);
2014         }
2015 }
2016
2017 /**
2018  * map_cmd_status -     Maps FW cmd status to OS cmd status
2019  * @fusion:             fusion context
2020  * @scmd:               Pointer to cmd
2021  * @status:             status of cmd returned by FW
2022  * @ext_status:         ext status of cmd returned by FW
2023  * @data_length:        command data length
2024  * @sense:              command sense data
2025  */
2026 static void
2027 map_cmd_status(struct fusion_context *fusion,
2028                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
2029                 u32 data_length, u8 *sense)
2030 {
2031         u8 cmd_type;
2032         int resid;
2033
2034         cmd_type = megasas_cmd_type(scmd);
2035         switch (status) {
2036
2037         case MFI_STAT_OK:
2038                 scmd->result = DID_OK << 16;
2039                 break;
2040
2041         case MFI_STAT_SCSI_IO_FAILED:
2042         case MFI_STAT_LD_INIT_IN_PROGRESS:
2043                 scmd->result = (DID_ERROR << 16) | ext_status;
2044                 break;
2045
2046         case MFI_STAT_SCSI_DONE_WITH_ERROR:
2047
2048                 scmd->result = (DID_OK << 16) | ext_status;
2049                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
2050                         memcpy(scmd->sense_buffer, sense,
2051                                SCSI_SENSE_BUFFERSIZE);
2052                 }
2053
2054                 /*
2055                  * If the  IO request is partially completed, then MR FW will
2056                  * update "io_request->DataLength" field with actual number of
2057                  * bytes transferred.Driver will set residual bytes count in
2058                  * SCSI command structure.
2059                  */
2060                 resid = (scsi_bufflen(scmd) - data_length);
2061                 scsi_set_resid(scmd, resid);
2062
2063                 if (resid &&
2064                         ((cmd_type == READ_WRITE_LDIO) ||
2065                         (cmd_type == READ_WRITE_SYSPDIO)))
2066                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
2067                                 " requested/completed 0x%x/0x%x\n",
2068                                 status, scsi_bufflen(scmd), data_length);
2069                 break;
2070
2071         case MFI_STAT_LD_OFFLINE:
2072         case MFI_STAT_DEVICE_NOT_FOUND:
2073                 scmd->result = DID_BAD_TARGET << 16;
2074                 break;
2075         case MFI_STAT_CONFIG_SEQ_MISMATCH:
2076                 scmd->result = DID_IMM_RETRY << 16;
2077                 break;
2078         default:
2079                 scmd->result = DID_ERROR << 16;
2080                 break;
2081         }
2082 }
2083
2084 /**
2085  * megasas_is_prp_possible -
2086  * Checks if native NVMe PRPs can be built for the IO
2087  *
2088  * @instance:           Adapter soft state
2089  * @scmd:               SCSI command from the mid-layer
2090  * @sge_count:          scatter gather element count.
2091  *
2092  * Returns:             true: PRPs can be built
2093  *                      false: IEEE SGLs needs to be built
2094  */
2095 static bool
2096 megasas_is_prp_possible(struct megasas_instance *instance,
2097                         struct scsi_cmnd *scmd, int sge_count)
2098 {
2099         u32 data_length = 0;
2100         struct scatterlist *sg_scmd;
2101         bool build_prp = false;
2102         u32 mr_nvme_pg_size;
2103
2104         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2105                                 MR_DEFAULT_NVME_PAGE_SIZE);
2106         data_length = scsi_bufflen(scmd);
2107         sg_scmd = scsi_sglist(scmd);
2108
2109         /*
2110          * NVMe uses one PRP for each page (or part of a page)
2111          * look at the data length - if 4 pages or less then IEEE is OK
2112          * if  > 5 pages then we need to build a native SGL
2113          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
2114          * if this first size in the page is >= the residual beyond 4 pages
2115          * then use IEEE, otherwise use native SGL
2116          */
2117
2118         if (data_length > (mr_nvme_pg_size * 5)) {
2119                 build_prp = true;
2120         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
2121                         (data_length <= (mr_nvme_pg_size * 5)))  {
2122                 /* check if 1st SG entry size is < residual beyond 4 pages */
2123                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
2124                         build_prp = true;
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  * @io_request:         IO request
2373  * @cdb_len:            cdb length
2374  * @io_info:            IO information
2375  * @scp:                SCSI command
2376  * @local_map_ptr:      Raid map
2377  * @ref_tag:            Primary reference tag
2378  *
2379  * Used to set the PD LBA in CDB for FP IOs
2380  */
2381 static void
2382 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2383                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2384                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2385 {
2386         struct MR_LD_RAID *raid;
2387         u16 ld;
2388         u64 start_blk = io_info->pdBlock;
2389         u8 *cdb = io_request->CDB.CDB32;
2390         u32 num_blocks = io_info->numBlocks;
2391         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2392
2393         /* Check if T10 PI (DIF) is enabled for this LD */
2394         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2395         raid = MR_LdRaidGet(ld, local_map_ptr);
2396         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2397                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2398                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2399                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
2400
2401                 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2402                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2403                 else
2404                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2405                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2406
2407                 /* LBA */
2408                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2409                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2410                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2411                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2412                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2413                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2414                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2415                 cdb[19] = (u8)(start_blk & 0xff);
2416
2417                 /* Logical block reference tag */
2418                 io_request->CDB.EEDP32.PrimaryReferenceTag =
2419                         cpu_to_be32(ref_tag);
2420                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2421                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2422
2423                 /* Transfer length */
2424                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2425                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2426                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2427                 cdb[31] = (u8)(num_blocks & 0xff);
2428
2429                 /* set SCSI IO EEDPFlags */
2430                 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2431                         io_request->EEDPFlags = cpu_to_le16(
2432                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
2433                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2434                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2435                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2436                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2437                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2438                 } else {
2439                         io_request->EEDPFlags = cpu_to_le16(
2440                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2441                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2442                 }
2443                 io_request->Control |= cpu_to_le32((0x4 << 26));
2444                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2445         } else {
2446                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2447                 if (((cdb_len == 12) || (cdb_len == 16)) &&
2448                     (start_blk <= 0xffffffff)) {
2449                         if (cdb_len == 16) {
2450                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2451                                 flagvals = cdb[1];
2452                                 groupnum = cdb[14];
2453                                 control = cdb[15];
2454                         } else {
2455                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2456                                 flagvals = cdb[1];
2457                                 groupnum = cdb[10];
2458                                 control = cdb[11];
2459                         }
2460
2461                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2462
2463                         cdb[0] = opcode;
2464                         cdb[1] = flagvals;
2465                         cdb[6] = groupnum;
2466                         cdb[9] = control;
2467
2468                         /* Transfer length */
2469                         cdb[8] = (u8)(num_blocks & 0xff);
2470                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2471
2472                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2473                         cdb_len = 10;
2474                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2475                         /* Convert to 16 byte CDB for large LBA's */
2476                         switch (cdb_len) {
2477                         case 6:
2478                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2479                                 control = cdb[5];
2480                                 break;
2481                         case 10:
2482                                 opcode =
2483                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
2484                                 flagvals = cdb[1];
2485                                 groupnum = cdb[6];
2486                                 control = cdb[9];
2487                                 break;
2488                         case 12:
2489                                 opcode =
2490                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
2491                                 flagvals = cdb[1];
2492                                 groupnum = cdb[10];
2493                                 control = cdb[11];
2494                                 break;
2495                         }
2496
2497                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2498
2499                         cdb[0] = opcode;
2500                         cdb[1] = flagvals;
2501                         cdb[14] = groupnum;
2502                         cdb[15] = control;
2503
2504                         /* Transfer length */
2505                         cdb[13] = (u8)(num_blocks & 0xff);
2506                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2507                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2508                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2509
2510                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2511                         cdb_len = 16;
2512                 }
2513
2514                 /* Normal case, just load LBA here */
2515                 switch (cdb_len) {
2516                 case 6:
2517                 {
2518                         u8 val = cdb[1] & 0xE0;
2519                         cdb[3] = (u8)(start_blk & 0xff);
2520                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
2521                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2522                         break;
2523                 }
2524                 case 10:
2525                         cdb[5] = (u8)(start_blk & 0xff);
2526                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2527                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2528                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2529                         break;
2530                 case 12:
2531                         cdb[5]    = (u8)(start_blk & 0xff);
2532                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2533                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2534                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2535                         break;
2536                 case 16:
2537                         cdb[9]    = (u8)(start_blk & 0xff);
2538                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2539                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2540                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2541                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2542                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2543                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2544                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2545                         break;
2546                 }
2547         }
2548 }
2549
2550 /**
2551  * megasas_stream_detect -      stream detection on read and and write IOs
2552  * @instance:           Adapter soft state
2553  * @cmd:                    Command to be prepared
2554  * @io_info:            IO Request info
2555  *
2556  */
2557
2558 /** stream detection on read and and write IOs */
2559 static void megasas_stream_detect(struct megasas_instance *instance,
2560                                   struct megasas_cmd_fusion *cmd,
2561                                   struct IO_REQUEST_INFO *io_info)
2562 {
2563         struct fusion_context *fusion = instance->ctrl_context;
2564         u32 device_id = io_info->ldTgtId;
2565         struct LD_STREAM_DETECT *current_ld_sd
2566                 = fusion->stream_detect_by_ld[device_id];
2567         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2568         u32 shifted_values, unshifted_values;
2569         u32 index_value_mask, shifted_values_mask;
2570         int i;
2571         bool is_read_ahead = false;
2572         struct STREAM_DETECT *current_sd;
2573         /* find possible stream */
2574         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2575                 stream_num = (*track_stream >>
2576                         (i * BITS_PER_INDEX_STREAM)) &
2577                         STREAM_MASK;
2578                 current_sd = &current_ld_sd->stream_track[stream_num];
2579                 /* if we found a stream, update the raid
2580                  *  context and also update the mruBitMap
2581                  */
2582                 /*      boundary condition */
2583                 if ((current_sd->next_seq_lba) &&
2584                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2585                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2586                     (current_sd->is_read == io_info->isRead)) {
2587
2588                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2589                             ((!io_info->isRead) || (!is_read_ahead)))
2590                                 /*
2591                                  * Once the API availible we need to change this.
2592                                  * At this point we are not allowing any gap
2593                                  */
2594                                 continue;
2595
2596                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2597                         current_sd->next_seq_lba =
2598                         io_info->ldStartBlock + io_info->numBlocks;
2599                         /*
2600                          *      update the mruBitMap LRU
2601                          */
2602                         shifted_values_mask =
2603                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2604                         shifted_values = ((*track_stream & shifted_values_mask)
2605                                                 << BITS_PER_INDEX_STREAM);
2606                         index_value_mask =
2607                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2608                         unshifted_values =
2609                                 *track_stream & ~(shifted_values_mask |
2610                                 index_value_mask);
2611                         *track_stream =
2612                                 unshifted_values | shifted_values | stream_num;
2613                         return;
2614                 }
2615         }
2616         /*
2617          * if we did not find any stream, create a new one
2618          * from the least recently used
2619          */
2620         stream_num = (*track_stream >>
2621                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2622                 STREAM_MASK;
2623         current_sd = &current_ld_sd->stream_track[stream_num];
2624         current_sd->is_read = io_info->isRead;
2625         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2626         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2627         return;
2628 }
2629
2630 /**
2631  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2632  * affinity (cpu of the controller) and raid_flags in the raid context
2633  * based on IO type.
2634  *
2635  * @fusion:             Fusion context
2636  * @praid_context:      IO RAID context
2637  * @raid:               LD raid map
2638  * @fp_possible:        Is fast path possible?
2639  * @is_read:            Is read IO?
2640  * @scsi_buff_len:      SCSI command buffer length
2641  *
2642  */
2643 static void
2644 megasas_set_raidflag_cpu_affinity(struct fusion_context *fusion,
2645                                 union RAID_CONTEXT_UNION *praid_context,
2646                                 struct MR_LD_RAID *raid, bool fp_possible,
2647                                 u8 is_read, u32 scsi_buff_len)
2648 {
2649         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2650         struct RAID_CONTEXT_G35 *rctx_g35;
2651
2652         rctx_g35 = &praid_context->raid_context_g35;
2653         if (fp_possible) {
2654                 if (is_read) {
2655                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2656                             (raid->cpuAffinity.pdRead.cpu1))
2657                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2658                         else if (raid->cpuAffinity.pdRead.cpu1)
2659                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2660                 } else {
2661                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2662                             (raid->cpuAffinity.pdWrite.cpu1))
2663                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2664                         else if (raid->cpuAffinity.pdWrite.cpu1)
2665                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2666                         /* Fast path cache by pass capable R0/R1 VD */
2667                         if ((raid->level <= 1) &&
2668                             (raid->capability.fp_cache_bypass_capable)) {
2669                                 rctx_g35->routing_flags |=
2670                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2671                                 rctx_g35->raid_flags =
2672                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2673                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2674                         }
2675                 }
2676         } else {
2677                 if (is_read) {
2678                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2679                             (raid->cpuAffinity.ldRead.cpu1))
2680                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2681                         else if (raid->cpuAffinity.ldRead.cpu1)
2682                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2683                 } else {
2684                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2685                             (raid->cpuAffinity.ldWrite.cpu1))
2686                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2687                         else if (raid->cpuAffinity.ldWrite.cpu1)
2688                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2689
2690                         if (is_stream_detected(rctx_g35) &&
2691                             ((raid->level == 5) || (raid->level == 6)) &&
2692                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2693                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2694                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2695                 }
2696         }
2697
2698         rctx_g35->routing_flags |=
2699                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2700
2701         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2702          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2703          * IO Subtype is not bitmap.
2704          */
2705         if ((fusion->pcie_bw_limitation) && (raid->level == 1) && (!is_read) &&
2706                         (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)) {
2707                 praid_context->raid_context_g35.raid_flags =
2708                         (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2709                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2710         }
2711 }
2712
2713 /**
2714  * megasas_build_ldio_fusion -  Prepares IOs to devices
2715  * @instance:           Adapter soft state
2716  * @scp:                SCSI command
2717  * @cmd:                Command to be prepared
2718  *
2719  * Prepares the io_request and chain elements (sg_frame) for IO
2720  * The IO can be for PD (Fast Path) or LD
2721  */
2722 static void
2723 megasas_build_ldio_fusion(struct megasas_instance *instance,
2724                           struct scsi_cmnd *scp,
2725                           struct megasas_cmd_fusion *cmd)
2726 {
2727         bool fp_possible;
2728         u16 ld;
2729         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2730         u32 scsi_buff_len;
2731         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2732         struct IO_REQUEST_INFO io_info;
2733         struct fusion_context *fusion;
2734         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2735         u8 *raidLUN;
2736         unsigned long spinlock_flags;
2737         struct MR_LD_RAID *raid = NULL;
2738         struct MR_PRIV_DEVICE *mrdev_priv;
2739         struct RAID_CONTEXT *rctx;
2740         struct RAID_CONTEXT_G35 *rctx_g35;
2741
2742         device_id = MEGASAS_DEV_INDEX(scp);
2743
2744         fusion = instance->ctrl_context;
2745
2746         io_request = cmd->io_request;
2747         rctx = &io_request->RaidContext.raid_context;
2748         rctx_g35 = &io_request->RaidContext.raid_context_g35;
2749
2750         rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2751         rctx->status = 0;
2752         rctx->ex_status = 0;
2753
2754         start_lba_lo = 0;
2755         start_lba_hi = 0;
2756         fp_possible = false;
2757
2758         /*
2759          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2760          */
2761         if (scp->cmd_len == 6) {
2762                 datalength = (u32) scp->cmnd[4];
2763                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2764                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2765
2766                 start_lba_lo &= 0x1FFFFF;
2767         }
2768
2769         /*
2770          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2771          */
2772         else if (scp->cmd_len == 10) {
2773                 datalength = (u32) scp->cmnd[8] |
2774                         ((u32) scp->cmnd[7] << 8);
2775                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2776                         ((u32) scp->cmnd[3] << 16) |
2777                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2778         }
2779
2780         /*
2781          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2782          */
2783         else if (scp->cmd_len == 12) {
2784                 datalength = ((u32) scp->cmnd[6] << 24) |
2785                         ((u32) scp->cmnd[7] << 16) |
2786                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2787                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2788                         ((u32) scp->cmnd[3] << 16) |
2789                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2790         }
2791
2792         /*
2793          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2794          */
2795         else if (scp->cmd_len == 16) {
2796                 datalength = ((u32) scp->cmnd[10] << 24) |
2797                         ((u32) scp->cmnd[11] << 16) |
2798                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2799                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2800                         ((u32) scp->cmnd[7] << 16) |
2801                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2802
2803                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2804                         ((u32) scp->cmnd[3] << 16) |
2805                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2806         }
2807
2808         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2809         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2810         io_info.numBlocks = datalength;
2811         io_info.ldTgtId = device_id;
2812         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2813         scsi_buff_len = scsi_bufflen(scp);
2814         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2815         io_info.data_arms = 1;
2816
2817         if (scp->sc_data_direction == DMA_FROM_DEVICE)
2818                 io_info.isRead = 1;
2819
2820         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2821         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2822
2823         if (ld < instance->fw_supported_vd_count)
2824                 raid = MR_LdRaidGet(ld, local_map_ptr);
2825
2826         if (!raid || (!fusion->fast_path_io)) {
2827                 rctx->reg_lock_flags  = 0;
2828                 fp_possible = false;
2829         } else {
2830                 if (MR_BuildRaidContext(instance, &io_info, rctx,
2831                                         local_map_ptr, &raidLUN))
2832                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2833         }
2834
2835         megasas_get_msix_index(instance, scp, cmd, io_info.data_arms);
2836
2837         if (instance->adapter_type >= VENTURA_SERIES) {
2838                 /* FP for Optimal raid level 1.
2839                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2840                  * are built by the driver as LD I/Os.
2841                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2842                  * (there is never a reason to process these as buffered writes)
2843                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2844                  * with the SLD bit asserted.
2845                  */
2846                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2847                         mrdev_priv = scp->device->hostdata;
2848
2849                         if (atomic_inc_return(&instance->fw_outstanding) >
2850                                 (instance->host->can_queue)) {
2851                                 fp_possible = false;
2852                                 atomic_dec(&instance->fw_outstanding);
2853                         } else if (fusion->pcie_bw_limitation &&
2854                                 ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2855                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0))) {
2856                                 fp_possible = false;
2857                                 atomic_dec(&instance->fw_outstanding);
2858                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2859                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2860                                                    instance->r1_ldio_hint_default);
2861                         }
2862                 }
2863
2864                 if (!fp_possible ||
2865                     (io_info.isRead && io_info.ra_capable)) {
2866                         spin_lock_irqsave(&instance->stream_lock,
2867                                           spinlock_flags);
2868                         megasas_stream_detect(instance, cmd, &io_info);
2869                         spin_unlock_irqrestore(&instance->stream_lock,
2870                                                spinlock_flags);
2871                         /* In ventura if stream detected for a read and it is
2872                          * read ahead capable make this IO as LDIO
2873                          */
2874                         if (is_stream_detected(rctx_g35))
2875                                 fp_possible = false;
2876                 }
2877
2878                 /* If raid is NULL, set CPU affinity to default CPU0 */
2879                 if (raid)
2880                         megasas_set_raidflag_cpu_affinity(fusion, &io_request->RaidContext,
2881                                 raid, fp_possible, io_info.isRead,
2882                                 scsi_buff_len);
2883                 else
2884                         rctx_g35->routing_flags |=
2885                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2886         }
2887
2888         if (fp_possible) {
2889                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2890                                    local_map_ptr, start_lba_lo);
2891                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2892                 cmd->request_desc->SCSIIO.RequestFlags =
2893                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2894                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2895                 if (instance->adapter_type == INVADER_SERIES) {
2896                         rctx->type = MPI2_TYPE_CUDA;
2897                         rctx->nseg = 0x1;
2898                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2899                         rctx->reg_lock_flags |=
2900                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2901                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2902                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2903                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2904                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2905                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2906                         io_request->IoFlags |=
2907                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2908                 }
2909                 if (fusion->load_balance_info &&
2910                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2911                         (io_info.isRead)) {
2912                         io_info.devHandle =
2913                                 get_updated_dev_handle(instance,
2914                                         &fusion->load_balance_info[device_id],
2915                                         &io_info, local_map_ptr);
2916                         megasas_priv(scp)->status |= MEGASAS_LOAD_BALANCE_FLAG;
2917                         cmd->pd_r1_lb = io_info.pd_after_lb;
2918                         if (instance->adapter_type >= VENTURA_SERIES)
2919                                 rctx_g35->span_arm = io_info.span_arm;
2920                         else
2921                                 rctx->span_arm = io_info.span_arm;
2922
2923                 } else
2924                         megasas_priv(scp)->status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2925
2926                 if (instance->adapter_type >= VENTURA_SERIES)
2927                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2928                 else
2929                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2930
2931                 if ((raidLUN[0] == 1) &&
2932                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2933                         instance->dev_handle = !(instance->dev_handle);
2934                         io_info.devHandle =
2935                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2936                 }
2937
2938                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2939                 io_request->DevHandle = io_info.devHandle;
2940                 cmd->pd_interface = io_info.pd_interface;
2941                 /* populate the LUN field */
2942                 memcpy(io_request->LUN, raidLUN, 8);
2943         } else {
2944                 rctx->timeout_value =
2945                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2946                 cmd->request_desc->SCSIIO.RequestFlags =
2947                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2948                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2949                 if (instance->adapter_type == INVADER_SERIES) {
2950                         if (io_info.do_fp_rlbypass ||
2951                         (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2952                                 cmd->request_desc->SCSIIO.RequestFlags =
2953                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2954                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2955                         rctx->type = MPI2_TYPE_CUDA;
2956                         rctx->reg_lock_flags |=
2957                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2958                                         MR_RL_FLAGS_SEQ_NUM_ENABLE);
2959                         rctx->nseg = 0x1;
2960                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2961                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2962                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2963                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2964                 }
2965                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2966                 io_request->DevHandle = cpu_to_le16(device_id);
2967
2968         } /* Not FP */
2969 }
2970
2971 /**
2972  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2973  * @instance:           Adapter soft state
2974  * @scmd:               SCSI command
2975  * @cmd:                Command to be prepared
2976  *
2977  * Prepares the io_request frame for non-rw io cmds for vd.
2978  */
2979 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2980                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2981 {
2982         u32 device_id;
2983         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2984         u16 ld;
2985         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2986         struct fusion_context *fusion = instance->ctrl_context;
2987         u8                          span, physArm;
2988         __le16                      devHandle;
2989         u32                         arRef, pd;
2990         struct MR_LD_RAID                  *raid;
2991         struct RAID_CONTEXT                *pRAID_Context;
2992         u8 fp_possible = 1;
2993
2994         io_request = cmd->io_request;
2995         device_id = MEGASAS_DEV_INDEX(scmd);
2996         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2997         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2998         /* get RAID_Context pointer */
2999         pRAID_Context = &io_request->RaidContext.raid_context;
3000         /* Check with FW team */
3001         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3002         pRAID_Context->reg_lock_row_lba    = 0;
3003         pRAID_Context->reg_lock_length    = 0;
3004
3005         if (fusion->fast_path_io && (
3006                 device_id < instance->fw_supported_vd_count)) {
3007
3008                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
3009                 if (ld >= instance->fw_supported_vd_count - 1)
3010                         fp_possible = 0;
3011                 else {
3012                         raid = MR_LdRaidGet(ld, local_map_ptr);
3013                         if (!(raid->capability.fpNonRWCapable))
3014                                 fp_possible = 0;
3015                 }
3016         } else
3017                 fp_possible = 0;
3018
3019         if (!fp_possible) {
3020                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3021                 io_request->DevHandle = cpu_to_le16(device_id);
3022                 io_request->LUN[1] = scmd->device->lun;
3023                 pRAID_Context->timeout_value =
3024                         cpu_to_le16(scsi_cmd_to_rq(scmd)->timeout / HZ);
3025                 cmd->request_desc->SCSIIO.RequestFlags =
3026                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3027                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3028         } else {
3029
3030                 /* set RAID context values */
3031                 pRAID_Context->config_seq_num = raid->seqNum;
3032                 if (instance->adapter_type < VENTURA_SERIES)
3033                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
3034                 pRAID_Context->timeout_value =
3035                         cpu_to_le16(raid->fpIoTimeoutForLd);
3036
3037                 /* get the DevHandle for the PD (since this is
3038                    fpNonRWCapable, this is a single disk RAID0) */
3039                 span = physArm = 0;
3040                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
3041                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
3042                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
3043
3044                 /* build request descriptor */
3045                 cmd->request_desc->SCSIIO.RequestFlags =
3046                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3047                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3048                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
3049
3050                 /* populate the LUN field */
3051                 memcpy(io_request->LUN, raid->LUN, 8);
3052
3053                 /* build the raidScsiIO structure */
3054                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3055                 io_request->DevHandle = devHandle;
3056         }
3057 }
3058
3059 /**
3060  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
3061  * @instance:           Adapter soft state
3062  * @scmd:               SCSI command
3063  * @cmd:                Command to be prepared
3064  * @fp_possible:        parameter to detect fast path or firmware path io.
3065  *
3066  * Prepares the io_request frame for rw/non-rw io cmds for syspds
3067  */
3068 static void
3069 megasas_build_syspd_fusion(struct megasas_instance *instance,
3070         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
3071         bool fp_possible)
3072 {
3073         u32 device_id;
3074         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
3075         u16 pd_index = 0;
3076         u16 os_timeout_value;
3077         u16 timeout_limit;
3078         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
3079         struct RAID_CONTEXT     *pRAID_Context;
3080         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3081         struct MR_PRIV_DEVICE *mr_device_priv_data;
3082         struct fusion_context *fusion = instance->ctrl_context;
3083         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
3084
3085         device_id = MEGASAS_DEV_INDEX(scmd);
3086         pd_index = MEGASAS_PD_INDEX(scmd);
3087         os_timeout_value = scsi_cmd_to_rq(scmd)->timeout / HZ;
3088         mr_device_priv_data = scmd->device->hostdata;
3089         cmd->pd_interface = mr_device_priv_data->interface_type;
3090
3091         io_request = cmd->io_request;
3092         /* get RAID_Context pointer */
3093         pRAID_Context = &io_request->RaidContext.raid_context;
3094         pRAID_Context->reg_lock_flags = 0;
3095         pRAID_Context->reg_lock_row_lba = 0;
3096         pRAID_Context->reg_lock_length = 0;
3097         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
3098         io_request->LUN[1] = scmd->device->lun;
3099         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
3100                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
3101
3102         /* If FW supports PD sequence number */
3103         if (instance->support_seqnum_jbod_fp) {
3104                 if (instance->use_seqnum_jbod_fp &&
3105                         instance->pd_list[pd_index].driveType == TYPE_DISK) {
3106
3107                         /* More than 256 PD/JBOD support for Ventura */
3108                         if (instance->support_morethan256jbod)
3109                                 pRAID_Context->virtual_disk_tgt_id =
3110                                         pd_sync->seq[pd_index].pd_target_id;
3111                         else
3112                                 pRAID_Context->virtual_disk_tgt_id =
3113                                         cpu_to_le16(device_id +
3114                                         (MAX_PHYSICAL_DEVICES - 1));
3115                         pRAID_Context->config_seq_num =
3116                                 pd_sync->seq[pd_index].seqNum;
3117                         io_request->DevHandle =
3118                                 pd_sync->seq[pd_index].devHandle;
3119                         if (instance->adapter_type >= VENTURA_SERIES) {
3120                                 io_request->RaidContext.raid_context_g35.routing_flags |=
3121                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3122                                 io_request->RaidContext.raid_context_g35.nseg_type |=
3123                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
3124                                 io_request->RaidContext.raid_context_g35.nseg_type |=
3125                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3126                         } else {
3127                                 pRAID_Context->type = MPI2_TYPE_CUDA;
3128                                 pRAID_Context->nseg = 0x1;
3129                                 pRAID_Context->reg_lock_flags |=
3130                                         (MR_RL_FLAGS_SEQ_NUM_ENABLE |
3131                                          MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3132                         }
3133                 } else {
3134                         pRAID_Context->virtual_disk_tgt_id =
3135                                 cpu_to_le16(device_id +
3136                                 (MAX_PHYSICAL_DEVICES - 1));
3137                         pRAID_Context->config_seq_num = 0;
3138                         io_request->DevHandle = cpu_to_le16(0xFFFF);
3139                 }
3140         } else {
3141                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3142                 pRAID_Context->config_seq_num = 0;
3143
3144                 if (fusion->fast_path_io) {
3145                         local_map_ptr =
3146                                 fusion->ld_drv_map[(instance->map_id & 1)];
3147                         io_request->DevHandle =
3148                                 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3149                 } else {
3150                         io_request->DevHandle = cpu_to_le16(0xFFFF);
3151                 }
3152         }
3153
3154         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3155
3156         megasas_get_msix_index(instance, scmd, cmd, 1);
3157
3158         if (!fp_possible) {
3159                 /* system pd firmware path */
3160                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3161                 cmd->request_desc->SCSIIO.RequestFlags =
3162                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3163                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3164                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3165                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3166         } else {
3167                 if (os_timeout_value)
3168                         os_timeout_value++;
3169
3170                 /* system pd Fast Path */
3171                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3172                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3173                                 255 : 0xFFFF;
3174                 pRAID_Context->timeout_value =
3175                         cpu_to_le16((os_timeout_value > timeout_limit) ?
3176                         timeout_limit : os_timeout_value);
3177                 if (instance->adapter_type >= INVADER_SERIES)
3178                         io_request->IoFlags |=
3179                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3180
3181                 cmd->request_desc->SCSIIO.RequestFlags =
3182                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3183                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3184         }
3185 }
3186
3187 /**
3188  * megasas_build_io_fusion -    Prepares IOs to devices
3189  * @instance:           Adapter soft state
3190  * @scp:                SCSI command
3191  * @cmd:                Command to be prepared
3192  *
3193  * Invokes helper functions to prepare request frames
3194  * and sets flags appropriate for IO/Non-IO cmd
3195  */
3196 static int
3197 megasas_build_io_fusion(struct megasas_instance *instance,
3198                         struct scsi_cmnd *scp,
3199                         struct megasas_cmd_fusion *cmd)
3200 {
3201         int sge_count;
3202         u8  cmd_type;
3203         u16 pd_index = 0;
3204         u8 drive_type = 0;
3205         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3206         struct MR_PRIV_DEVICE *mr_device_priv_data;
3207         mr_device_priv_data = scp->device->hostdata;
3208
3209         /* Zero out some fields so they don't get reused */
3210         memset(io_request->LUN, 0x0, 8);
3211         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3212         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3213         io_request->EEDPFlags = 0;
3214         io_request->Control = 0;
3215         io_request->EEDPBlockSize = 0;
3216         io_request->ChainOffset = 0;
3217         io_request->RaidContext.raid_context.raid_flags = 0;
3218         io_request->RaidContext.raid_context.type = 0;
3219         io_request->RaidContext.raid_context.nseg = 0;
3220
3221         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3222         /*
3223          * Just the CDB length,rest of the Flags are zero
3224          * This will be modified for FP in build_ldio_fusion
3225          */
3226         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3227
3228         switch (cmd_type = megasas_cmd_type(scp)) {
3229         case READ_WRITE_LDIO:
3230                 megasas_build_ldio_fusion(instance, scp, cmd);
3231                 break;
3232         case NON_READ_WRITE_LDIO:
3233                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3234                 break;
3235         case READ_WRITE_SYSPDIO:
3236                 megasas_build_syspd_fusion(instance, scp, cmd, true);
3237                 break;
3238         case NON_READ_WRITE_SYSPDIO:
3239                 pd_index = MEGASAS_PD_INDEX(scp);
3240                 drive_type = instance->pd_list[pd_index].driveType;
3241                 if ((instance->secure_jbod_support ||
3242                      mr_device_priv_data->is_tm_capable) ||
3243                      (instance->adapter_type >= VENTURA_SERIES &&
3244                      drive_type == TYPE_ENCLOSURE))
3245                         megasas_build_syspd_fusion(instance, scp, cmd, false);
3246                 else
3247                         megasas_build_syspd_fusion(instance, scp, cmd, true);
3248                 break;
3249         default:
3250                 break;
3251         }
3252
3253         /*
3254          * Construct SGL
3255          */
3256
3257         sge_count = megasas_make_sgl(instance, scp, cmd);
3258
3259         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3260                 dev_err(&instance->pdev->dev,
3261                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
3262                         __func__, __LINE__, sge_count, instance->max_num_sge);
3263                 return 1;
3264         }
3265
3266         if (instance->adapter_type >= VENTURA_SERIES) {
3267                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3268                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3269                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3270         } else {
3271                 /* numSGE store lower 8 bit of sge_count.
3272                  * numSGEExt store higher 8 bit of sge_count
3273                  */
3274                 io_request->RaidContext.raid_context.num_sge = sge_count;
3275                 io_request->RaidContext.raid_context.num_sge_ext =
3276                         (u8)(sge_count >> 8);
3277         }
3278
3279         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3280
3281         if (scp->sc_data_direction == DMA_TO_DEVICE)
3282                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3283         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3284                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3285
3286         io_request->SGLOffset0 =
3287                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3288
3289         io_request->SenseBufferLowAddress =
3290                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3291         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3292
3293         cmd->scmd = scp;
3294         megasas_priv(scp)->cmd_priv = cmd;
3295
3296         return 0;
3297 }
3298
3299 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3300 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3301 {
3302         u8 *p;
3303         struct fusion_context *fusion;
3304
3305         fusion = instance->ctrl_context;
3306         p = fusion->req_frames_desc +
3307                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3308
3309         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3310 }
3311
3312
3313 /* megasas_prepate_secondRaid1_IO
3314  *  It prepares the raid 1 second IO
3315  */
3316 static void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3317                                            struct megasas_cmd_fusion *cmd,
3318                                            struct megasas_cmd_fusion *r1_cmd)
3319 {
3320         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3321         struct fusion_context *fusion;
3322         fusion = instance->ctrl_context;
3323         req_desc = cmd->request_desc;
3324         /* copy the io request frame as well as 8 SGEs data for r1 command*/
3325         memcpy(r1_cmd->io_request, cmd->io_request,
3326                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3327         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3328                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3329         /*sense buffer is different for r1 command*/
3330         r1_cmd->io_request->SenseBufferLowAddress =
3331                         cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3332         r1_cmd->scmd = cmd->scmd;
3333         req_desc2 = megasas_get_request_descriptor(instance,
3334                                                    (r1_cmd->index - 1));
3335         req_desc2->Words = 0;
3336         r1_cmd->request_desc = req_desc2;
3337         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3338         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3339         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3340         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3341         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3342         cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3343                         cpu_to_le16(r1_cmd->index);
3344         r1_cmd->io_request->RaidContext.raid_context_g35.flow_specific.peer_smid =
3345                         cpu_to_le16(cmd->index);
3346         /*MSIxIndex of both commands request descriptors should be same*/
3347         r1_cmd->request_desc->SCSIIO.MSIxIndex =
3348                         cmd->request_desc->SCSIIO.MSIxIndex;
3349         /*span arm is different for r1 cmd*/
3350         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3351                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3352 }
3353
3354 /**
3355  * megasas_build_and_issue_cmd_fusion -Main routine for building and
3356  *                                     issuing non IOCTL cmd
3357  * @instance:                   Adapter soft state
3358  * @scmd:                       pointer to scsi cmd from OS
3359  */
3360 static u32
3361 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3362                                    struct scsi_cmnd *scmd)
3363 {
3364         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3365         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3366         u32 index;
3367
3368         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3369                 instance->ldio_threshold &&
3370                 (atomic_inc_return(&instance->ldio_outstanding) >
3371                 instance->ldio_threshold)) {
3372                 atomic_dec(&instance->ldio_outstanding);
3373                 return SCSI_MLQUEUE_DEVICE_BUSY;
3374         }
3375
3376         if (atomic_inc_return(&instance->fw_outstanding) >
3377                         instance->host->can_queue) {
3378                 atomic_dec(&instance->fw_outstanding);
3379                 return SCSI_MLQUEUE_HOST_BUSY;
3380         }
3381
3382         cmd = megasas_get_cmd_fusion(instance, scsi_cmd_to_rq(scmd)->tag);
3383
3384         if (!cmd) {
3385                 atomic_dec(&instance->fw_outstanding);
3386                 return SCSI_MLQUEUE_HOST_BUSY;
3387         }
3388
3389         index = cmd->index;
3390
3391         req_desc = megasas_get_request_descriptor(instance, index-1);
3392
3393         req_desc->Words = 0;
3394         cmd->request_desc = req_desc;
3395
3396         if (megasas_build_io_fusion(instance, scmd, cmd)) {
3397                 megasas_return_cmd_fusion(instance, cmd);
3398                 dev_err(&instance->pdev->dev, "Error building command\n");
3399                 cmd->request_desc = NULL;
3400                 atomic_dec(&instance->fw_outstanding);
3401                 return SCSI_MLQUEUE_HOST_BUSY;
3402         }
3403
3404         req_desc = cmd->request_desc;
3405         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3406
3407         if (cmd->io_request->ChainOffset != 0 &&
3408             cmd->io_request->ChainOffset != 0xF)
3409                 dev_err(&instance->pdev->dev, "The chain offset value is not "
3410                        "correct : %x\n", cmd->io_request->ChainOffset);
3411         /*
3412          *      if it is raid 1/10 fp write capable.
3413          *      try to get second command from pool and construct it.
3414          *      From FW, it has confirmed that lba values of two PDs
3415          *      corresponds to single R1/10 LD are always same
3416          *
3417          */
3418         /*      driver side count always should be less than max_fw_cmds
3419          *      to get new command
3420          */
3421         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3422                 r1_cmd = megasas_get_cmd_fusion(instance,
3423                                 scsi_cmd_to_rq(scmd)->tag + instance->max_fw_cmds);
3424                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3425         }
3426
3427
3428         /*
3429          * Issue the command to the FW
3430          */
3431
3432         megasas_sdev_busy_inc(instance, scmd);
3433         megasas_fire_cmd_fusion(instance, req_desc);
3434
3435         if (r1_cmd)
3436                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3437
3438
3439         return 0;
3440 }
3441
3442 /**
3443  * megasas_complete_r1_command -
3444  * completes R1 FP write commands which has valid peer smid
3445  * @instance:                   Adapter soft state
3446  * @cmd:                        MPT command frame
3447  *
3448  */
3449 static inline void
3450 megasas_complete_r1_command(struct megasas_instance *instance,
3451                             struct megasas_cmd_fusion *cmd)
3452 {
3453         u8 *sense, status, ex_status;
3454         u32 data_length;
3455         u16 peer_smid;
3456         struct fusion_context *fusion;
3457         struct megasas_cmd_fusion *r1_cmd = NULL;
3458         struct scsi_cmnd *scmd_local = NULL;
3459         struct RAID_CONTEXT_G35 *rctx_g35;
3460
3461         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3462         fusion = instance->ctrl_context;
3463         peer_smid = le16_to_cpu(rctx_g35->flow_specific.peer_smid);
3464
3465         r1_cmd = fusion->cmd_list[peer_smid - 1];
3466         scmd_local = cmd->scmd;
3467         status = rctx_g35->status;
3468         ex_status = rctx_g35->ex_status;
3469         data_length = cmd->io_request->DataLength;
3470         sense = cmd->sense;
3471
3472         cmd->cmd_completed = true;
3473
3474         /* Check if peer command is completed or not*/
3475         if (r1_cmd->cmd_completed) {
3476                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3477                 if (rctx_g35->status != MFI_STAT_OK) {
3478                         status = rctx_g35->status;
3479                         ex_status = rctx_g35->ex_status;
3480                         data_length = r1_cmd->io_request->DataLength;
3481                         sense = r1_cmd->sense;
3482                 }
3483
3484                 megasas_return_cmd_fusion(instance, r1_cmd);
3485                 map_cmd_status(fusion, scmd_local, status, ex_status,
3486                                le32_to_cpu(data_length), sense);
3487                 if (instance->ldio_threshold &&
3488                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3489                         atomic_dec(&instance->ldio_outstanding);
3490                 megasas_priv(scmd_local)->cmd_priv = NULL;
3491                 megasas_return_cmd_fusion(instance, cmd);
3492                 scsi_dma_unmap(scmd_local);
3493                 megasas_sdev_busy_dec(instance, scmd_local);
3494                 scsi_done(scmd_local);
3495         }
3496 }
3497
3498 /**
3499  * access_irq_context:          Access to reply processing
3500  * @irq_context:                IRQ context
3501  *
3502  * Synchronize access to reply processing.
3503  *
3504  * Return:  true on success, false on failure.
3505  */
3506 static inline
3507 bool access_irq_context(struct megasas_irq_context  *irq_context)
3508 {
3509         if (!irq_context)
3510                 return true;
3511
3512         if (atomic_add_unless(&irq_context->in_used, 1, 1))
3513                 return true;
3514
3515         return false;
3516 }
3517
3518 /**
3519  * release_irq_context:         Release reply processing
3520  * @irq_context:                IRQ context
3521  *
3522  * Release access of reply processing.
3523  *
3524  * Return: Nothing.
3525  */
3526 static inline
3527 void release_irq_context(struct megasas_irq_context  *irq_context)
3528 {
3529         if (irq_context)
3530                 atomic_dec(&irq_context->in_used);
3531 }
3532
3533 /**
3534  * complete_cmd_fusion -        Completes command
3535  * @instance:                   Adapter soft state
3536  * @MSIxIndex:                  MSI number
3537  * @irq_context:                IRQ context
3538  *
3539  * Completes all commands that is in reply descriptor queue
3540  */
3541 static int
3542 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex,
3543                     struct megasas_irq_context *irq_context)
3544 {
3545         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3546         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3547         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3548         struct fusion_context *fusion;
3549         struct megasas_cmd *cmd_mfi;
3550         struct megasas_cmd_fusion *cmd_fusion;
3551         u16 smid, num_completed;
3552         u8 reply_descript_type, *sense, status, extStatus;
3553         u32 device_id, data_length;
3554         union desc_value d_val;
3555         struct LD_LOAD_BALANCE_INFO *lbinfo;
3556         int threshold_reply_count = 0;
3557         struct scsi_cmnd *scmd_local = NULL;
3558         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3559         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3560
3561         fusion = instance->ctrl_context;
3562
3563         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3564                 return IRQ_HANDLED;
3565
3566         if (!access_irq_context(irq_context))
3567                 return 0;
3568
3569         desc = fusion->reply_frames_desc[MSIxIndex] +
3570                                 fusion->last_reply_idx[MSIxIndex];
3571
3572         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3573
3574         d_val.word = desc->Words;
3575
3576         reply_descript_type = reply_desc->ReplyFlags &
3577                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3578
3579         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
3580                 release_irq_context(irq_context);
3581                 return IRQ_NONE;
3582         }
3583
3584         num_completed = 0;
3585
3586         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3587                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3588
3589                 smid = le16_to_cpu(reply_desc->SMID);
3590                 cmd_fusion = fusion->cmd_list[smid - 1];
3591                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3592                                                 cmd_fusion->io_request;
3593
3594                 scmd_local = cmd_fusion->scmd;
3595                 status = scsi_io_req->RaidContext.raid_context.status;
3596                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3597                 sense = cmd_fusion->sense;
3598                 data_length = scsi_io_req->DataLength;
3599
3600                 switch (scsi_io_req->Function) {
3601                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3602                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3603                                                 cmd_fusion->io_request;
3604                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3605                                                 &mr_tm_req->TmRequest;
3606                         dev_dbg(&instance->pdev->dev, "TM completion:"
3607                                 "type: 0x%x TaskMID: 0x%x\n",
3608                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3609                         complete(&cmd_fusion->done);
3610                         break;
3611                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3612                         /* Update load balancing info */
3613                         if (fusion->load_balance_info &&
3614                             (megasas_priv(cmd_fusion->scmd)->status &
3615                             MEGASAS_LOAD_BALANCE_FLAG)) {
3616                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3617                                 lbinfo = &fusion->load_balance_info[device_id];
3618                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3619                                 megasas_priv(cmd_fusion->scmd)->status &=
3620                                         ~MEGASAS_LOAD_BALANCE_FLAG;
3621                         }
3622                         fallthrough;    /* and complete IO */
3623                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3624                         atomic_dec(&instance->fw_outstanding);
3625                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3626                                 map_cmd_status(fusion, scmd_local, status,
3627                                                extStatus, le32_to_cpu(data_length),
3628                                                sense);
3629                                 if (instance->ldio_threshold &&
3630                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3631                                         atomic_dec(&instance->ldio_outstanding);
3632                                 megasas_priv(scmd_local)->cmd_priv = NULL;
3633                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3634                                 scsi_dma_unmap(scmd_local);
3635                                 megasas_sdev_busy_dec(instance, scmd_local);
3636                                 scsi_done(scmd_local);
3637                         } else  /* Optimal VD - R1 FP command completion. */
3638                                 megasas_complete_r1_command(instance, cmd_fusion);
3639                         break;
3640                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3641                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3642                         /* Poll mode. Dummy free.
3643                          * In case of Interrupt mode, caller has reverse check.
3644                          */
3645                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3646                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3647                                 megasas_return_cmd(instance, cmd_mfi);
3648                         } else
3649                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3650                         break;
3651                 }
3652
3653                 fusion->last_reply_idx[MSIxIndex]++;
3654                 if (fusion->last_reply_idx[MSIxIndex] >=
3655                     fusion->reply_q_depth)
3656                         fusion->last_reply_idx[MSIxIndex] = 0;
3657
3658                 desc->Words = cpu_to_le64(ULLONG_MAX);
3659                 num_completed++;
3660                 threshold_reply_count++;
3661
3662                 /* Get the next reply descriptor */
3663                 if (!fusion->last_reply_idx[MSIxIndex])
3664                         desc = fusion->reply_frames_desc[MSIxIndex];
3665                 else
3666                         desc++;
3667
3668                 reply_desc =
3669                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3670
3671                 d_val.word = desc->Words;
3672
3673                 reply_descript_type = reply_desc->ReplyFlags &
3674                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3675
3676                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3677                         break;
3678                 /*
3679                  * Write to reply post host index register after completing threshold
3680                  * number of reply counts and still there are more replies in reply queue
3681                  * pending to be completed
3682                  */
3683                 if (threshold_reply_count >= instance->threshold_reply_count) {
3684                         if (instance->msix_combined)
3685                                 writel(((MSIxIndex & 0x7) << 24) |
3686                                         fusion->last_reply_idx[MSIxIndex],
3687                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3688                         else
3689                                 writel((MSIxIndex << 24) |
3690                                         fusion->last_reply_idx[MSIxIndex],
3691                                         instance->reply_post_host_index_addr[0]);
3692                         threshold_reply_count = 0;
3693                         if (irq_context) {
3694                                 if (!irq_context->irq_poll_scheduled) {
3695                                         irq_context->irq_poll_scheduled = true;
3696                                         irq_context->irq_line_enable = true;
3697                                         irq_poll_sched(&irq_context->irqpoll);
3698                                 }
3699                                 release_irq_context(irq_context);
3700                                 return num_completed;
3701                         }
3702                 }
3703         }
3704
3705         if (num_completed) {
3706                 wmb();
3707                 if (instance->msix_combined)
3708                         writel(((MSIxIndex & 0x7) << 24) |
3709                                 fusion->last_reply_idx[MSIxIndex],
3710                                 instance->reply_post_host_index_addr[MSIxIndex/8]);
3711                 else
3712                         writel((MSIxIndex << 24) |
3713                                 fusion->last_reply_idx[MSIxIndex],
3714                                 instance->reply_post_host_index_addr[0]);
3715                 megasas_check_and_restore_queue_depth(instance);
3716         }
3717
3718         release_irq_context(irq_context);
3719
3720         return num_completed;
3721 }
3722
3723 int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num)
3724 {
3725
3726         struct megasas_instance *instance;
3727         int num_entries = 0;
3728         struct fusion_context *fusion;
3729
3730         instance = (struct megasas_instance *)shost->hostdata;
3731
3732         fusion = instance->ctrl_context;
3733
3734         queue_num = queue_num + instance->low_latency_index_start;
3735
3736         if (!atomic_add_unless(&fusion->busy_mq_poll[queue_num], 1, 1))
3737                 return 0;
3738
3739         num_entries = complete_cmd_fusion(instance, queue_num, NULL);
3740         atomic_dec(&fusion->busy_mq_poll[queue_num]);
3741
3742         return num_entries;
3743 }
3744
3745 /**
3746  * megasas_enable_irq_poll() - enable irqpoll
3747  * @instance:                   Adapter soft state
3748  */
3749 static void megasas_enable_irq_poll(struct megasas_instance *instance)
3750 {
3751         u32 count, i;
3752         struct megasas_irq_context *irq_ctx;
3753
3754         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3755
3756         for (i = 0; i < count; i++) {
3757                 irq_ctx = &instance->irq_context[i];
3758                 irq_poll_enable(&irq_ctx->irqpoll);
3759         }
3760 }
3761
3762 /**
3763  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3764  * @instance_addr:                      Adapter soft state address
3765  */
3766 static void megasas_sync_irqs(unsigned long instance_addr)
3767 {
3768         u32 count, i;
3769         struct megasas_instance *instance =
3770                 (struct megasas_instance *)instance_addr;
3771         struct megasas_irq_context *irq_ctx;
3772
3773         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3774
3775         for (i = 0; i < count; i++) {
3776                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3777                 irq_ctx = &instance->irq_context[i];
3778                 irq_poll_disable(&irq_ctx->irqpoll);
3779                 if (irq_ctx->irq_poll_scheduled) {
3780                         irq_ctx->irq_poll_scheduled = false;
3781                         enable_irq(irq_ctx->os_irq);
3782                         complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3783                 }
3784         }
3785 }
3786
3787 /**
3788  * megasas_irqpoll() - process a queue for completed reply descriptors
3789  * @irqpoll:    IRQ poll structure associated with queue to poll.
3790  * @budget:     Threshold of reply descriptors to process per poll.
3791  *
3792  * Return: The number of entries processed.
3793  */
3794
3795 int megasas_irqpoll(struct irq_poll *irqpoll, int budget)
3796 {
3797         struct megasas_irq_context *irq_ctx;
3798         struct megasas_instance *instance;
3799         int num_entries;
3800
3801         irq_ctx = container_of(irqpoll, struct megasas_irq_context, irqpoll);
3802         instance = irq_ctx->instance;
3803
3804         if (irq_ctx->irq_line_enable) {
3805                 disable_irq_nosync(irq_ctx->os_irq);
3806                 irq_ctx->irq_line_enable = false;
3807         }
3808
3809         num_entries = complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3810         if (num_entries < budget) {
3811                 irq_poll_complete(irqpoll);
3812                 irq_ctx->irq_poll_scheduled = false;
3813                 enable_irq(irq_ctx->os_irq);
3814                 complete_cmd_fusion(instance, irq_ctx->MSIxIndex, irq_ctx);
3815         }
3816
3817         return num_entries;
3818 }
3819
3820 /**
3821  * megasas_complete_cmd_dpc_fusion -    Completes command
3822  * @instance_addr:                      Adapter soft state address
3823  *
3824  * Tasklet to complete cmds
3825  */
3826 static void
3827 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3828 {
3829         struct megasas_instance *instance =
3830                 (struct megasas_instance *)instance_addr;
3831         struct megasas_irq_context *irq_ctx = NULL;
3832         u32 count, MSIxIndex;
3833
3834         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3835
3836         /* If we have already declared adapter dead, donot complete cmds */
3837         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3838                 return;
3839
3840         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++) {
3841                 irq_ctx = &instance->irq_context[MSIxIndex];
3842                 complete_cmd_fusion(instance, MSIxIndex, irq_ctx);
3843         }
3844 }
3845
3846 /**
3847  * megasas_isr_fusion - isr entry point
3848  * @irq:        IRQ number
3849  * @devp:       IRQ context
3850  */
3851 static irqreturn_t megasas_isr_fusion(int irq, void *devp)
3852 {
3853         struct megasas_irq_context *irq_context = devp;
3854         struct megasas_instance *instance = irq_context->instance;
3855         u32 mfiStatus;
3856
3857         if (instance->mask_interrupts)
3858                 return IRQ_NONE;
3859
3860         if (irq_context->irq_poll_scheduled)
3861                 return IRQ_HANDLED;
3862
3863         if (!instance->msix_vectors) {
3864                 mfiStatus = instance->instancet->clear_intr(instance);
3865                 if (!mfiStatus)
3866                         return IRQ_NONE;
3867         }
3868
3869         /* If we are resetting, bail */
3870         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3871                 instance->instancet->clear_intr(instance);
3872                 return IRQ_HANDLED;
3873         }
3874
3875         return complete_cmd_fusion(instance, irq_context->MSIxIndex, irq_context)
3876                         ? IRQ_HANDLED : IRQ_NONE;
3877 }
3878
3879 /**
3880  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3881  * @instance:                   Adapter soft state
3882  * @mfi_cmd:                    megasas_cmd pointer
3883  *
3884  */
3885 static void
3886 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3887                         struct megasas_cmd *mfi_cmd)
3888 {
3889         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3890         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3891         struct megasas_cmd_fusion *cmd;
3892         struct fusion_context *fusion;
3893         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3894
3895         fusion = instance->ctrl_context;
3896
3897         cmd = megasas_get_cmd_fusion(instance,
3898                         instance->max_scsi_cmds + mfi_cmd->index);
3899
3900         /*  Save the smid. To be used for returning the cmd */
3901         mfi_cmd->context.smid = cmd->index;
3902
3903         /*
3904          * For cmds where the flag is set, store the flag and check
3905          * on completion. For cmds with this flag, don't call
3906          * megasas_complete_cmd
3907          */
3908
3909         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3910                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3911
3912         io_req = cmd->io_request;
3913
3914         if (instance->adapter_type >= INVADER_SERIES) {
3915                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3916                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3917                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3918                 sgl_ptr_end->Flags = 0;
3919         }
3920
3921         mpi25_ieee_chain =
3922           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3923
3924         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3925         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3926                                        SGL) / 4;
3927         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3928
3929         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3930
3931         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3932                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3933
3934         mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3935 }
3936
3937 /**
3938  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3939  * @instance:                   Adapter soft state
3940  * @cmd:                        mfi cmd to build
3941  *
3942  */
3943 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3944 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3945 {
3946         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3947         u16 index;
3948
3949         build_mpt_mfi_pass_thru(instance, cmd);
3950         index = cmd->context.smid;
3951
3952         req_desc = megasas_get_request_descriptor(instance, index - 1);
3953
3954         req_desc->Words = 0;
3955         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3956                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3957
3958         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3959
3960         return req_desc;
3961 }
3962
3963 /**
3964  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3965  * @instance:                   Adapter soft state
3966  * @cmd:                        mfi cmd pointer
3967  *
3968  */
3969 static void
3970 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3971                           struct megasas_cmd *cmd)
3972 {
3973         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3974
3975         req_desc = build_mpt_cmd(instance, cmd);
3976
3977         megasas_fire_cmd_fusion(instance, req_desc);
3978         return;
3979 }
3980
3981 /**
3982  * megasas_release_fusion -     Reverses the FW initialization
3983  * @instance:                   Adapter soft state
3984  */
3985 void
3986 megasas_release_fusion(struct megasas_instance *instance)
3987 {
3988         megasas_free_ioc_init_cmd(instance);
3989         megasas_free_cmds(instance);
3990         megasas_free_cmds_fusion(instance);
3991
3992         iounmap(instance->reg_set);
3993
3994         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3995 }
3996
3997 /**
3998  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3999  * @instance:                   Adapter soft state
4000  */
4001 static u32
4002 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
4003 {
4004         return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
4005 }
4006
4007 /**
4008  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
4009  * @instance:                           Controller's soft instance
4010  * @return:                             Number of allocated host crash buffers
4011  */
4012 static void
4013 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
4014 {
4015         unsigned int i;
4016
4017         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
4018                 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
4019                 if (!instance->crash_buf[i]) {
4020                         dev_info(&instance->pdev->dev, "Firmware crash dump "
4021                                 "memory allocation failed at index %d\n", i);
4022                         break;
4023                 }
4024         }
4025         instance->drv_buf_alloc = i;
4026 }
4027
4028 /**
4029  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
4030  * @instance:                           Controller's soft instance
4031  */
4032 void
4033 megasas_free_host_crash_buffer(struct megasas_instance *instance)
4034 {
4035         unsigned int i;
4036         for (i = 0; i < instance->drv_buf_alloc; i++) {
4037                 vfree(instance->crash_buf[i]);
4038         }
4039         instance->drv_buf_index = 0;
4040         instance->drv_buf_alloc = 0;
4041         instance->fw_crash_state = UNAVAILABLE;
4042         instance->fw_crash_buffer_size = 0;
4043 }
4044
4045 /**
4046  * megasas_adp_reset_fusion -   For controller reset
4047  * @instance:                           Controller's soft instance
4048  * @regs:                               MFI register set
4049  */
4050 static int
4051 megasas_adp_reset_fusion(struct megasas_instance *instance,
4052                          struct megasas_register_set __iomem *regs)
4053 {
4054         u32 host_diag, abs_state, retry;
4055
4056         /* Now try to reset the chip */
4057         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4058         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4059         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4060         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4061         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4062         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4063         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
4064
4065         /* Check that the diag write enable (DRWE) bit is on */
4066         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4067         retry = 0;
4068         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
4069                 msleep(100);
4070                 host_diag = megasas_readl(instance,
4071                                           &instance->reg_set->fusion_host_diag);
4072                 if (retry++ == 100) {
4073                         dev_warn(&instance->pdev->dev,
4074                                 "Host diag unlock failed from %s %d\n",
4075                                 __func__, __LINE__);
4076                         break;
4077                 }
4078         }
4079         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
4080                 return -1;
4081
4082         /* Send chip reset command */
4083         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
4084                 &instance->reg_set->fusion_host_diag);
4085         msleep(3000);
4086
4087         /* Make sure reset adapter bit is cleared */
4088         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
4089         retry = 0;
4090         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
4091                 msleep(100);
4092                 host_diag = megasas_readl(instance,
4093                                           &instance->reg_set->fusion_host_diag);
4094                 if (retry++ == 1000) {
4095                         dev_warn(&instance->pdev->dev,
4096                                 "Diag reset adapter never cleared %s %d\n",
4097                                 __func__, __LINE__);
4098                         break;
4099                 }
4100         }
4101         if (host_diag & HOST_DIAG_RESET_ADAPTER)
4102                 return -1;
4103
4104         abs_state = instance->instancet->read_fw_status_reg(instance)
4105                         & MFI_STATE_MASK;
4106         retry = 0;
4107
4108         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
4109                 msleep(100);
4110                 abs_state = instance->instancet->
4111                         read_fw_status_reg(instance) & MFI_STATE_MASK;
4112         }
4113         if (abs_state <= MFI_STATE_FW_INIT) {
4114                 dev_warn(&instance->pdev->dev,
4115                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
4116                         abs_state, __func__, __LINE__);
4117                 return -1;
4118         }
4119
4120         return 0;
4121 }
4122
4123 /**
4124  * megasas_check_reset_fusion - For controller reset check
4125  * @instance:                           Controller's soft instance
4126  * @regs:                               MFI register set
4127  */
4128 static int
4129 megasas_check_reset_fusion(struct megasas_instance *instance,
4130                            struct megasas_register_set __iomem *regs)
4131 {
4132         return 0;
4133 }
4134
4135 /**
4136  * megasas_trigger_snap_dump -  Trigger snap dump in FW
4137  * @instance:                   Soft instance of adapter
4138  */
4139 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
4140 {
4141         int j;
4142         u32 fw_state, abs_state;
4143
4144         if (!instance->disableOnlineCtrlReset) {
4145                 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
4146                 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
4147                        &instance->reg_set->doorbell);
4148                 readl(&instance->reg_set->doorbell);
4149         }
4150
4151         for (j = 0; j < instance->snapdump_wait_time; j++) {
4152                 abs_state = instance->instancet->read_fw_status_reg(instance);
4153                 fw_state = abs_state & MFI_STATE_MASK;
4154                 if (fw_state == MFI_STATE_FAULT) {
4155                         dev_printk(KERN_ERR, &instance->pdev->dev,
4156                                    "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4157                                    abs_state & MFI_STATE_FAULT_CODE,
4158                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4159                         return;
4160                 }
4161                 msleep(1000);
4162         }
4163 }
4164
4165 /* This function waits for outstanding commands on fusion to complete */
4166 static int
4167 megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
4168                                     int reason, int *convert)
4169 {
4170         int i, outstanding, retval = 0, hb_seconds_missed = 0;
4171         u32 fw_state, abs_state;
4172         u32 waittime_for_io_completion;
4173
4174         waittime_for_io_completion =
4175                 min_t(u32, resetwaittime,
4176                         (resetwaittime - instance->snapdump_wait_time));
4177
4178         if (reason == MFI_IO_TIMEOUT_OCR) {
4179                 dev_info(&instance->pdev->dev,
4180                         "MFI command is timed out\n");
4181                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4182                 if (instance->snapdump_wait_time)
4183                         megasas_trigger_snap_dump(instance);
4184                 retval = 1;
4185                 goto out;
4186         }
4187
4188         for (i = 0; i < waittime_for_io_completion; i++) {
4189                 /* Check if firmware is in fault state */
4190                 abs_state = instance->instancet->read_fw_status_reg(instance);
4191                 fw_state = abs_state & MFI_STATE_MASK;
4192                 if (fw_state == MFI_STATE_FAULT) {
4193                         dev_printk(KERN_ERR, &instance->pdev->dev,
4194                                    "FW in FAULT state Fault code:0x%x subcode:0x%x func:%s\n",
4195                                    abs_state & MFI_STATE_FAULT_CODE,
4196                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4197                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4198                         if (instance->requestorId && reason) {
4199                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
4200                                 " state while polling during"
4201                                 " I/O timeout handling for %d\n",
4202                                 instance->host->host_no);
4203                                 *convert = 1;
4204                         }
4205
4206                         retval = 1;
4207                         goto out;
4208                 }
4209
4210
4211                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
4212                 if (instance->requestorId && !reason) {
4213                         retval = 1;
4214                         goto out;
4215                 }
4216
4217                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
4218                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
4219                         if (instance->hb_host_mem->HB.fwCounter !=
4220                             instance->hb_host_mem->HB.driverCounter) {
4221                                 instance->hb_host_mem->HB.driverCounter =
4222                                         instance->hb_host_mem->HB.fwCounter;
4223                                 hb_seconds_missed = 0;
4224                         } else {
4225                                 hb_seconds_missed++;
4226                                 if (hb_seconds_missed ==
4227                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
4228                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
4229                                                " Heartbeat never completed "
4230                                                " while polling during I/O "
4231                                                " timeout handling for "
4232                                                "scsi%d.\n",
4233                                                instance->host->host_no);
4234                                                *convert = 1;
4235                                                retval = 1;
4236                                                goto out;
4237                                 }
4238                         }
4239                 }
4240
4241                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
4242                 outstanding = atomic_read(&instance->fw_outstanding);
4243                 if (!outstanding)
4244                         goto out;
4245
4246                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4247                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
4248                                "commands to complete for scsi%d\n", i,
4249                                outstanding, instance->host->host_no);
4250                 }
4251                 msleep(1000);
4252         }
4253
4254         if (instance->snapdump_wait_time) {
4255                 megasas_trigger_snap_dump(instance);
4256                 retval = 1;
4257                 goto out;
4258         }
4259
4260         if (atomic_read(&instance->fw_outstanding)) {
4261                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
4262                        "will reset adapter scsi%d.\n",
4263                        instance->host->host_no);
4264                 *convert = 1;
4265                 retval = 1;
4266         }
4267
4268 out:
4269         return retval;
4270 }
4271
4272 void  megasas_reset_reply_desc(struct megasas_instance *instance)
4273 {
4274         int i, j, count;
4275         struct fusion_context *fusion;
4276         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
4277
4278         fusion = instance->ctrl_context;
4279         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
4280         count += instance->iopoll_q_count;
4281
4282         for (i = 0 ; i < count ; i++) {
4283                 fusion->last_reply_idx[i] = 0;
4284                 reply_desc = fusion->reply_frames_desc[i];
4285                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
4286                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
4287         }
4288 }
4289
4290 /*
4291  * megasas_refire_mgmt_cmd :    Re-fire management commands
4292  * @instance:                           Controller's soft instance
4293 */
4294 static void megasas_refire_mgmt_cmd(struct megasas_instance *instance,
4295                              bool return_ioctl)
4296 {
4297         int j;
4298         struct megasas_cmd_fusion *cmd_fusion;
4299         struct fusion_context *fusion;
4300         struct megasas_cmd *cmd_mfi;
4301         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4302         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
4303         u16 smid;
4304         bool refire_cmd = false;
4305         u8 result;
4306         u32 opcode = 0;
4307
4308         fusion = instance->ctrl_context;
4309
4310         /* Re-fire management commands.
4311          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4312          */
4313         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4314                 cmd_fusion = fusion->cmd_list[j];
4315                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4316                 smid = le16_to_cpu(cmd_mfi->context.smid);
4317                 result = REFIRE_CMD;
4318
4319                 if (!smid)
4320                         continue;
4321
4322                 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4323
4324                 switch (cmd_mfi->frame->hdr.cmd) {
4325                 case MFI_CMD_DCMD:
4326                         opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4327                          /* Do not refire shutdown command */
4328                         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4329                                 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4330                                 result = COMPLETE_CMD;
4331                                 break;
4332                         }
4333
4334                         refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4335                                       (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4336                                       !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4337
4338                         if (!refire_cmd)
4339                                 result = RETURN_CMD;
4340
4341                         break;
4342                 case MFI_CMD_NVME:
4343                         if (!instance->support_nvme_passthru) {
4344                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4345                                 result = COMPLETE_CMD;
4346                         }
4347
4348                         break;
4349                 case MFI_CMD_TOOLBOX:
4350                         if (!instance->support_pci_lane_margining) {
4351                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4352                                 result = COMPLETE_CMD;
4353                         }
4354
4355                         break;
4356                 default:
4357                         break;
4358                 }
4359
4360                 if (return_ioctl && cmd_mfi->sync_cmd &&
4361                     cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT) {
4362                         dev_err(&instance->pdev->dev,
4363                                 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x\n",
4364                                 __func__, __LINE__, cmd_mfi->frame->hdr.cmd,
4365                                 le32_to_cpu(cmd_mfi->frame->dcmd.opcode));
4366                         cmd_mfi->cmd_status_drv = DCMD_BUSY;
4367                         result = COMPLETE_CMD;
4368                 }
4369
4370                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
4371                                 cmd_fusion->io_request;
4372                 if (scsi_io_req->Function == MPI2_FUNCTION_SCSI_TASK_MGMT)
4373                         result = RETURN_CMD;
4374
4375                 switch (result) {
4376                 case REFIRE_CMD:
4377                         megasas_fire_cmd_fusion(instance, req_desc);
4378                         break;
4379                 case RETURN_CMD:
4380                         megasas_return_cmd(instance, cmd_mfi);
4381                         break;
4382                 case COMPLETE_CMD:
4383                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4384                         break;
4385                 }
4386         }
4387 }
4388
4389 /*
4390  * megasas_return_polled_cmds: Return polled mode commands back to the pool
4391  *                             before initiating an OCR.
4392  * @instance:                  Controller's soft instance
4393  */
4394 static void
4395 megasas_return_polled_cmds(struct megasas_instance *instance)
4396 {
4397         int i;
4398         struct megasas_cmd_fusion *cmd_fusion;
4399         struct fusion_context *fusion;
4400         struct megasas_cmd *cmd_mfi;
4401
4402         fusion = instance->ctrl_context;
4403
4404         for (i = instance->max_scsi_cmds; i < instance->max_fw_cmds; i++) {
4405                 cmd_fusion = fusion->cmd_list[i];
4406                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4407
4408                 if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
4409                         if (megasas_dbg_lvl & OCR_DEBUG)
4410                                 dev_info(&instance->pdev->dev,
4411                                          "%s %d return cmd 0x%x opcode 0x%x\n",
4412                                          __func__, __LINE__, cmd_mfi->frame->hdr.cmd,
4413                                          le32_to_cpu(cmd_mfi->frame->dcmd.opcode));
4414                         cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
4415                         megasas_return_cmd(instance, cmd_mfi);
4416                 }
4417         }
4418 }
4419
4420 /*
4421  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4422  * @instance: per adapter struct
4423  * @channel: the channel assigned by the OS
4424  * @id: the id assigned by the OS
4425  *
4426  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4427  */
4428
4429 static int megasas_track_scsiio(struct megasas_instance *instance,
4430                 int id, int channel)
4431 {
4432         int i, found = 0;
4433         struct megasas_cmd_fusion *cmd_fusion;
4434         struct fusion_context *fusion;
4435         fusion = instance->ctrl_context;
4436
4437         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4438                 cmd_fusion = fusion->cmd_list[i];
4439                 if (cmd_fusion->scmd &&
4440                         (cmd_fusion->scmd->device->id == id &&
4441                         cmd_fusion->scmd->device->channel == channel)) {
4442                         dev_info(&instance->pdev->dev,
4443                                 "SCSI commands pending to target"
4444                                 "channel %d id %d \tSMID: 0x%x\n",
4445                                 channel, id, cmd_fusion->index);
4446                         scsi_print_command(cmd_fusion->scmd);
4447                         found = 1;
4448                         break;
4449                 }
4450         }
4451
4452         return found ? FAILED : SUCCESS;
4453 }
4454
4455 /**
4456  * megasas_tm_response_code - translation of device response code
4457  * @instance:   Controller's soft instance
4458  * @mpi_reply:  MPI reply returned by firmware
4459  *
4460  * Return nothing.
4461  */
4462 static void
4463 megasas_tm_response_code(struct megasas_instance *instance,
4464                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4465 {
4466         char *desc;
4467
4468         switch (mpi_reply->ResponseCode) {
4469         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4470                 desc = "task management request completed";
4471                 break;
4472         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4473                 desc = "invalid frame";
4474                 break;
4475         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4476                 desc = "task management request not supported";
4477                 break;
4478         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4479                 desc = "task management request failed";
4480                 break;
4481         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4482                 desc = "task management request succeeded";
4483                 break;
4484         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4485                 desc = "invalid lun";
4486                 break;
4487         case 0xA:
4488                 desc = "overlapped tag attempted";
4489                 break;
4490         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4491                 desc = "task queued, however not sent to target";
4492                 break;
4493         default:
4494                 desc = "unknown";
4495                 break;
4496         }
4497         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4498                 mpi_reply->ResponseCode, desc);
4499         dev_dbg(&instance->pdev->dev,
4500                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4501                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4502                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4503                 mpi_reply->Function, mpi_reply->TaskType,
4504                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4505 }
4506
4507 /**
4508  * megasas_issue_tm - main routine for sending tm requests
4509  * @instance: per adapter struct
4510  * @device_handle: device handle
4511  * @channel: the channel assigned by the OS
4512  * @id: the id assigned by the OS
4513  * @smid_task: smid assigned to the task
4514  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4515  * @mr_device_priv_data: private data
4516  * Context: user
4517  *
4518  * MegaRaid use MPT interface for Task Magement request.
4519  * A generic API for sending task management requests to firmware.
4520  *
4521  * Return SUCCESS or FAILED.
4522  */
4523 static int
4524 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4525         uint channel, uint id, u16 smid_task, u8 type,
4526         struct MR_PRIV_DEVICE *mr_device_priv_data)
4527 {
4528         struct MR_TASK_MANAGE_REQUEST *mr_request;
4529         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4530         unsigned long timeleft;
4531         struct megasas_cmd_fusion *cmd_fusion;
4532         struct megasas_cmd *cmd_mfi;
4533         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4534         struct fusion_context *fusion = NULL;
4535         struct megasas_cmd_fusion *scsi_lookup;
4536         int rc;
4537         int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4538         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4539
4540         fusion = instance->ctrl_context;
4541
4542         cmd_mfi = megasas_get_cmd(instance);
4543
4544         if (!cmd_mfi) {
4545                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4546                         __func__, __LINE__);
4547                 return -ENOMEM;
4548         }
4549
4550         cmd_fusion = megasas_get_cmd_fusion(instance,
4551                         instance->max_scsi_cmds + cmd_mfi->index);
4552
4553         /*  Save the smid. To be used for returning the cmd */
4554         cmd_mfi->context.smid = cmd_fusion->index;
4555
4556         req_desc = megasas_get_request_descriptor(instance,
4557                         (cmd_fusion->index - 1));
4558
4559         cmd_fusion->request_desc = req_desc;
4560         req_desc->Words = 0;
4561
4562         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4563         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4564         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4565         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4566         mpi_request->DevHandle = cpu_to_le16(device_handle);
4567         mpi_request->TaskType = type;
4568         mpi_request->TaskMID = cpu_to_le16(smid_task);
4569         mpi_request->LUN[1] = 0;
4570
4571
4572         req_desc = cmd_fusion->request_desc;
4573         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4574         req_desc->HighPriority.RequestFlags =
4575                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4576                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4577         req_desc->HighPriority.MSIxIndex =  0;
4578         req_desc->HighPriority.LMID = 0;
4579         req_desc->HighPriority.Reserved1 = 0;
4580
4581         if (channel < MEGASAS_MAX_PD_CHANNELS)
4582                 mr_request->tmReqFlags.isTMForPD = 1;
4583         else
4584                 mr_request->tmReqFlags.isTMForLD = 1;
4585
4586         init_completion(&cmd_fusion->done);
4587         megasas_fire_cmd_fusion(instance, req_desc);
4588
4589         switch (type) {
4590         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4591                 timeout = mr_device_priv_data->task_abort_tmo;
4592                 break;
4593         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4594                 timeout = mr_device_priv_data->target_reset_tmo;
4595                 break;
4596         }
4597
4598         timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4599
4600         if (!timeleft) {
4601                 dev_err(&instance->pdev->dev,
4602                         "task mgmt type 0x%x timed out\n", type);
4603                 mutex_unlock(&instance->reset_mutex);
4604                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4605                 mutex_lock(&instance->reset_mutex);
4606                 return rc;
4607         }
4608
4609         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4610         megasas_tm_response_code(instance, mpi_reply);
4611
4612         megasas_return_cmd(instance, cmd_mfi);
4613         rc = SUCCESS;
4614         switch (type) {
4615         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4616                 scsi_lookup = fusion->cmd_list[smid_task - 1];
4617
4618                 if (scsi_lookup->scmd == NULL)
4619                         break;
4620                 else {
4621                         instance->instancet->disable_intr(instance);
4622                         megasas_sync_irqs((unsigned long)instance);
4623                         instance->instancet->enable_intr(instance);
4624                         megasas_enable_irq_poll(instance);
4625                         if (scsi_lookup->scmd == NULL)
4626                                 break;
4627                 }
4628                 rc = FAILED;
4629                 break;
4630
4631         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4632                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4633                         break;
4634                 instance->instancet->disable_intr(instance);
4635                 megasas_sync_irqs((unsigned long)instance);
4636                 rc = megasas_track_scsiio(instance, id, channel);
4637                 instance->instancet->enable_intr(instance);
4638                 megasas_enable_irq_poll(instance);
4639
4640                 break;
4641         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4642         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4643                 break;
4644         default:
4645                 rc = FAILED;
4646                 break;
4647         }
4648
4649         return rc;
4650
4651 }
4652
4653 /*
4654  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4655  * @instance: per adapter struct
4656  *
4657  * Return Non Zero index, if SMID found in outstanding commands
4658  */
4659 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4660 {
4661         int i, ret = 0;
4662         struct megasas_instance *instance;
4663         struct megasas_cmd_fusion *cmd_fusion;
4664         struct fusion_context *fusion;
4665
4666         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4667
4668         fusion = instance->ctrl_context;
4669
4670         for (i = 0; i < instance->max_scsi_cmds; i++) {
4671                 cmd_fusion = fusion->cmd_list[i];
4672                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4673                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4674                                 " SMID: %d\n", cmd_fusion->index);
4675                         ret = cmd_fusion->index;
4676                         break;
4677                 }
4678         }
4679
4680         return ret;
4681 }
4682
4683 /*
4684 * megasas_get_tm_devhandle - Get devhandle for TM request
4685 * @sdev-                     OS provided scsi device
4686 *
4687 * Returns-                   devhandle/targetID of SCSI device
4688 */
4689 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4690 {
4691         u16 pd_index = 0;
4692         u32 device_id;
4693         struct megasas_instance *instance;
4694         struct fusion_context *fusion;
4695         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4696         u16 devhandle = (u16)ULONG_MAX;
4697
4698         instance = (struct megasas_instance *)sdev->host->hostdata;
4699         fusion = instance->ctrl_context;
4700
4701         if (!MEGASAS_IS_LOGICAL(sdev)) {
4702                 if (instance->use_seqnum_jbod_fp) {
4703                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4704                                     + sdev->id;
4705                         pd_sync = (void *)fusion->pd_seq_sync
4706                                         [(instance->pd_seq_map_id - 1) & 1];
4707                         devhandle = pd_sync->seq[pd_index].devHandle;
4708                 } else
4709                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4710                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4711         } else {
4712                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4713                                 + sdev->id;
4714                 devhandle = device_id;
4715         }
4716
4717         return devhandle;
4718 }
4719
4720 /*
4721  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4722  * @scmd : pointer to scsi command object
4723  *
4724  * Return SUCCESS, if command aborted else FAILED
4725  */
4726
4727 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4728 {
4729         struct megasas_instance *instance;
4730         u16 smid, devhandle;
4731         int ret;
4732         struct MR_PRIV_DEVICE *mr_device_priv_data;
4733         mr_device_priv_data = scmd->device->hostdata;
4734
4735         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4736
4737         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4738                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4739                 "SCSI host:%d\n", instance->host->host_no);
4740                 ret = FAILED;
4741                 return ret;
4742         }
4743
4744         if (!mr_device_priv_data) {
4745                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4746                         "scmd(%p)\n", scmd);
4747                 scmd->result = DID_NO_CONNECT << 16;
4748                 ret = SUCCESS;
4749                 goto out;
4750         }
4751
4752         if (!mr_device_priv_data->is_tm_capable) {
4753                 ret = FAILED;
4754                 goto out;
4755         }
4756
4757         mutex_lock(&instance->reset_mutex);
4758
4759         smid = megasas_fusion_smid_lookup(scmd);
4760
4761         if (!smid) {
4762                 ret = SUCCESS;
4763                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4764                         " issued is not found in outstanding commands\n");
4765                 mutex_unlock(&instance->reset_mutex);
4766                 goto out;
4767         }
4768
4769         devhandle = megasas_get_tm_devhandle(scmd->device);
4770
4771         if (devhandle == (u16)ULONG_MAX) {
4772                 ret = SUCCESS;
4773                 sdev_printk(KERN_INFO, scmd->device,
4774                         "task abort issued for invalid devhandle\n");
4775                 mutex_unlock(&instance->reset_mutex);
4776                 goto out;
4777         }
4778         sdev_printk(KERN_INFO, scmd->device,
4779                 "attempting task abort! scmd(0x%p) tm_dev_handle 0x%x\n",
4780                 scmd, devhandle);
4781
4782         mr_device_priv_data->tm_busy = true;
4783         ret = megasas_issue_tm(instance, devhandle,
4784                         scmd->device->channel, scmd->device->id, smid,
4785                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4786                         mr_device_priv_data);
4787         mr_device_priv_data->tm_busy = false;
4788
4789         mutex_unlock(&instance->reset_mutex);
4790         scmd_printk(KERN_INFO, scmd, "task abort %s!! scmd(0x%p)\n",
4791                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4792 out:
4793         scsi_print_command(scmd);
4794         if (megasas_dbg_lvl & TM_DEBUG)
4795                 megasas_dump_fusion_io(scmd);
4796
4797         return ret;
4798 }
4799
4800 /*
4801  * megasas_reset_target_fusion : target reset function for fusion adapters
4802  * scmd: SCSI command pointer
4803  *
4804  * Returns SUCCESS if all commands associated with target aborted else FAILED
4805  */
4806
4807 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4808 {
4809
4810         struct megasas_instance *instance;
4811         int ret = FAILED;
4812         u16 devhandle;
4813         struct MR_PRIV_DEVICE *mr_device_priv_data;
4814         mr_device_priv_data = scmd->device->hostdata;
4815
4816         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4817
4818         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4819                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4820                 "SCSI host:%d\n", instance->host->host_no);
4821                 ret = FAILED;
4822                 return ret;
4823         }
4824
4825         if (!mr_device_priv_data) {
4826                 sdev_printk(KERN_INFO, scmd->device,
4827                             "device been deleted! scmd: (0x%p)\n", scmd);
4828                 scmd->result = DID_NO_CONNECT << 16;
4829                 ret = SUCCESS;
4830                 goto out;
4831         }
4832
4833         if (!mr_device_priv_data->is_tm_capable) {
4834                 ret = FAILED;
4835                 goto out;
4836         }
4837
4838         mutex_lock(&instance->reset_mutex);
4839         devhandle = megasas_get_tm_devhandle(scmd->device);
4840
4841         if (devhandle == (u16)ULONG_MAX) {
4842                 ret = SUCCESS;
4843                 sdev_printk(KERN_INFO, scmd->device,
4844                         "target reset issued for invalid devhandle\n");
4845                 mutex_unlock(&instance->reset_mutex);
4846                 goto out;
4847         }
4848
4849         sdev_printk(KERN_INFO, scmd->device,
4850                 "attempting target reset! scmd(0x%p) tm_dev_handle: 0x%x\n",
4851                 scmd, devhandle);
4852         mr_device_priv_data->tm_busy = true;
4853         ret = megasas_issue_tm(instance, devhandle,
4854                         scmd->device->channel, scmd->device->id, 0,
4855                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4856                         mr_device_priv_data);
4857         mr_device_priv_data->tm_busy = false;
4858         mutex_unlock(&instance->reset_mutex);
4859         scmd_printk(KERN_NOTICE, scmd, "target reset %s!!\n",
4860                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4861
4862 out:
4863         return ret;
4864 }
4865
4866 /*SRIOV get other instance in cluster if any*/
4867 static struct
4868 megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4869 {
4870         int i;
4871
4872         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4873                 if (megasas_mgmt_info.instance[i] &&
4874                         (megasas_mgmt_info.instance[i] != instance) &&
4875                          megasas_mgmt_info.instance[i]->requestorId &&
4876                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4877                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4878                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4879                         return megasas_mgmt_info.instance[i];
4880         }
4881         return NULL;
4882 }
4883
4884 /* Check for a second path that is currently UP */
4885 int megasas_check_mpio_paths(struct megasas_instance *instance,
4886         struct scsi_cmnd *scmd)
4887 {
4888         struct megasas_instance *peer_instance = NULL;
4889         int retval = (DID_REQUEUE << 16);
4890
4891         if (instance->peerIsPresent) {
4892                 peer_instance = megasas_get_peer_instance(instance);
4893                 if ((peer_instance) &&
4894                         (atomic_read(&peer_instance->adprecovery) ==
4895                         MEGASAS_HBA_OPERATIONAL))
4896                         retval = (DID_NO_CONNECT << 16);
4897         }
4898         return retval;
4899 }
4900
4901 /* Core fusion reset function */
4902 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4903 {
4904         int retval = SUCCESS, i, j, convert = 0;
4905         struct megasas_instance *instance;
4906         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4907         struct fusion_context *fusion;
4908         u32 abs_state, status_reg, reset_adapter, fpio_count = 0;
4909         u32 io_timeout_in_crash_mode = 0;
4910         struct scsi_cmnd *scmd_local = NULL;
4911         struct scsi_device *sdev;
4912         int ret_target_prop = DCMD_FAILED;
4913         bool is_target_prop = false;
4914         bool do_adp_reset = true;
4915         int max_reset_tries = MEGASAS_FUSION_MAX_RESET_TRIES;
4916
4917         instance = (struct megasas_instance *)shost->hostdata;
4918         fusion = instance->ctrl_context;
4919
4920         mutex_lock(&instance->reset_mutex);
4921
4922         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4923                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4924                        "returning FAILED for scsi%d.\n",
4925                         instance->host->host_no);
4926                 mutex_unlock(&instance->reset_mutex);
4927                 return FAILED;
4928         }
4929         status_reg = instance->instancet->read_fw_status_reg(instance);
4930         abs_state = status_reg & MFI_STATE_MASK;
4931
4932         /* IO timeout detected, forcibly put FW in FAULT state */
4933         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4934                 instance->crash_dump_app_support && reason) {
4935                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4936                         "forcibly FAULT Firmware\n");
4937                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4938                 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4939                 writel(status_reg | MFI_STATE_FORCE_OCR,
4940                         &instance->reg_set->doorbell);
4941                 readl(&instance->reg_set->doorbell);
4942                 mutex_unlock(&instance->reset_mutex);
4943                 do {
4944                         ssleep(3);
4945                         io_timeout_in_crash_mode++;
4946                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4947                                 "seconds for crash dump collection and OCR "
4948                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4949                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4950                         (io_timeout_in_crash_mode < 80));
4951
4952                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4953                         dev_info(&instance->pdev->dev, "OCR done for IO "
4954                                 "timeout case\n");
4955                         retval = SUCCESS;
4956                 } else {
4957                         dev_info(&instance->pdev->dev, "Controller is not "
4958                                 "operational after 240 seconds wait for IO "
4959                                 "timeout case in FW crash dump mode\n do "
4960                                 "OCR/kill adapter\n");
4961                         retval = megasas_reset_fusion(shost, 0);
4962                 }
4963                 return retval;
4964         }
4965
4966         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4967                 del_timer_sync(&instance->sriov_heartbeat_timer);
4968         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4969         set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
4970         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4971         instance->instancet->disable_intr(instance);
4972         megasas_sync_irqs((unsigned long)instance);
4973
4974         /* First try waiting for commands to complete */
4975         if (megasas_wait_for_outstanding_fusion(instance, reason,
4976                                                 &convert)) {
4977                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4978                 dev_warn(&instance->pdev->dev, "resetting fusion "
4979                        "adapter scsi%d.\n", instance->host->host_no);
4980                 if (convert)
4981                         reason = 0;
4982
4983                 if (megasas_dbg_lvl & OCR_DEBUG)
4984                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4985
4986                 /* Now return commands back to the OS */
4987                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4988                         cmd_fusion = fusion->cmd_list[i];
4989                         /*check for extra commands issued by driver*/
4990                         if (instance->adapter_type >= VENTURA_SERIES) {
4991                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4992                                 megasas_return_cmd_fusion(instance, r1_cmd);
4993                         }
4994                         scmd_local = cmd_fusion->scmd;
4995                         if (cmd_fusion->scmd) {
4996                                 if (megasas_dbg_lvl & OCR_DEBUG) {
4997                                         sdev_printk(KERN_INFO,
4998                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4999                                                 cmd_fusion->index);
5000                                         megasas_dump_fusion_io(cmd_fusion->scmd);
5001                                 }
5002
5003                                 if (cmd_fusion->io_request->Function ==
5004                                         MPI2_FUNCTION_SCSI_IO_REQUEST)
5005                                         fpio_count++;
5006
5007                                 scmd_local->result =
5008                                         megasas_check_mpio_paths(instance,
5009                                                         scmd_local);
5010                                 if (instance->ldio_threshold &&
5011                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
5012                                         atomic_dec(&instance->ldio_outstanding);
5013                                 megasas_return_cmd_fusion(instance, cmd_fusion);
5014                                 scsi_dma_unmap(scmd_local);
5015                                 scsi_done(scmd_local);
5016                         }
5017                 }
5018
5019                 dev_info(&instance->pdev->dev, "Outstanding fastpath IOs: %d\n",
5020                         fpio_count);
5021
5022                 atomic_set(&instance->fw_outstanding, 0);
5023
5024                 status_reg = instance->instancet->read_fw_status_reg(instance);
5025                 abs_state = status_reg & MFI_STATE_MASK;
5026                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
5027                 if (instance->disableOnlineCtrlReset ||
5028                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
5029                         /* Reset not supported, kill adapter */
5030                         dev_warn(&instance->pdev->dev, "Reset not supported"
5031                                ", killing adapter scsi%d.\n",
5032                                 instance->host->host_no);
5033                         goto kill_hba;
5034                 }
5035
5036                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
5037                 if (instance->requestorId && !reason) {
5038                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
5039                         do_adp_reset = false;
5040                         max_reset_tries = MEGASAS_SRIOV_MAX_RESET_TRIES_VF;
5041                 }
5042
5043                 /* Now try to reset the chip */
5044                 for (i = 0; i < max_reset_tries; i++) {
5045                         /*
5046                          * Do adp reset and wait for
5047                          * controller to transition to ready
5048                          */
5049                         if (megasas_adp_reset_wait_for_ready(instance,
5050                                 do_adp_reset, 1) == FAILED)
5051                                 continue;
5052
5053                         /* Wait for FW to become ready */
5054                         if (megasas_transition_to_ready(instance, 1)) {
5055                                 dev_warn(&instance->pdev->dev,
5056                                         "Failed to transition controller to ready for "
5057                                         "scsi%d.\n", instance->host->host_no);
5058                                 continue;
5059                         }
5060                         megasas_reset_reply_desc(instance);
5061                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
5062
5063                         if (megasas_ioc_init_fusion(instance)) {
5064                                 continue;
5065                         }
5066
5067                         if (megasas_get_ctrl_info(instance)) {
5068                                 dev_info(&instance->pdev->dev,
5069                                         "Failed from %s %d\n",
5070                                         __func__, __LINE__);
5071                                 goto kill_hba;
5072                         }
5073
5074                         megasas_refire_mgmt_cmd(instance,
5075                                                 (i == (MEGASAS_FUSION_MAX_RESET_TRIES - 1)
5076                                                         ? 1 : 0));
5077
5078                         /* Reset load balance info */
5079                         if (fusion->load_balance_info)
5080                                 memset(fusion->load_balance_info, 0,
5081                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
5082                                        MAX_LOGICAL_DRIVES_EXT));
5083
5084                         if (!megasas_get_map_info(instance)) {
5085                                 megasas_sync_map_info(instance);
5086                         } else {
5087                                 /*
5088                                  * Return pending polled mode cmds before
5089                                  * retrying OCR
5090                                  */
5091                                 megasas_return_polled_cmds(instance);
5092                                 continue;
5093                         }
5094
5095                         megasas_setup_jbod_map(instance);
5096
5097                         /* reset stream detection array */
5098                         if (instance->adapter_type >= VENTURA_SERIES) {
5099                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
5100                                         memset(fusion->stream_detect_by_ld[j],
5101                                                0, sizeof(struct LD_STREAM_DETECT));
5102                                         fusion->stream_detect_by_ld[j]->mru_bit_map
5103                                                 = MR_STREAM_BITMAP;
5104                                 }
5105                         }
5106
5107                         clear_bit(MEGASAS_FUSION_IN_RESET,
5108                                   &instance->reset_flags);
5109                         instance->instancet->enable_intr(instance);
5110                         megasas_enable_irq_poll(instance);
5111                         shost_for_each_device(sdev, shost) {
5112                                 if ((instance->tgt_prop) &&
5113                                     (instance->nvme_page_size))
5114                                         ret_target_prop = megasas_get_target_prop(instance, sdev);
5115
5116                                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
5117                                 megasas_set_dynamic_target_properties(sdev, is_target_prop);
5118                         }
5119
5120                         status_reg = instance->instancet->read_fw_status_reg
5121                                         (instance);
5122                         abs_state = status_reg & MFI_STATE_MASK;
5123                         if (abs_state != MFI_STATE_OPERATIONAL) {
5124                                 dev_info(&instance->pdev->dev,
5125                                          "Adapter is not OPERATIONAL, state 0x%x for scsi:%d\n",
5126                                          abs_state, instance->host->host_no);
5127                                 goto out;
5128                         }
5129                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5130
5131                         dev_info(&instance->pdev->dev,
5132                                  "Adapter is OPERATIONAL for scsi:%d\n",
5133                                  instance->host->host_no);
5134
5135                         /* Restart SR-IOV heartbeat */
5136                         if (instance->requestorId) {
5137                                 if (!megasas_sriov_start_heartbeat(instance, 0))
5138                                         megasas_start_timer(instance);
5139                                 else
5140                                         instance->skip_heartbeat_timer_del = 1;
5141                         }
5142
5143                         if (instance->crash_dump_drv_support &&
5144                                 instance->crash_dump_app_support)
5145                                 megasas_set_crash_dump_params(instance,
5146                                         MR_CRASH_BUF_TURN_ON);
5147                         else
5148                                 megasas_set_crash_dump_params(instance,
5149                                         MR_CRASH_BUF_TURN_OFF);
5150
5151                         if (instance->snapdump_wait_time) {
5152                                 megasas_get_snapdump_properties(instance);
5153                                 dev_info(&instance->pdev->dev,
5154                                          "Snap dump wait time\t: %d\n",
5155                                          instance->snapdump_wait_time);
5156                         }
5157
5158                         retval = SUCCESS;
5159
5160                         /* Adapter reset completed successfully */
5161                         dev_warn(&instance->pdev->dev,
5162                                  "Reset successful for scsi%d.\n",
5163                                  instance->host->host_no);
5164
5165                         goto out;
5166                 }
5167                 /* Reset failed, kill the adapter */
5168                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
5169                        "adapter scsi%d.\n", instance->host->host_no);
5170                 goto kill_hba;
5171         } else {
5172                 /* For VF: Restart HB timer if we didn't OCR */
5173                 if (instance->requestorId) {
5174                         megasas_start_timer(instance);
5175                 }
5176                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
5177                 instance->instancet->enable_intr(instance);
5178                 megasas_enable_irq_poll(instance);
5179                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5180                 goto out;
5181         }
5182 kill_hba:
5183         megaraid_sas_kill_hba(instance);
5184         megasas_enable_irq_poll(instance);
5185         instance->skip_heartbeat_timer_del = 1;
5186         retval = FAILED;
5187 out:
5188         clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
5189         mutex_unlock(&instance->reset_mutex);
5190         return retval;
5191 }
5192
5193 /* Fusion Crash dump collection */
5194 static void  megasas_fusion_crash_dump(struct megasas_instance *instance)
5195 {
5196         u32 status_reg;
5197         u8 partial_copy = 0;
5198         int wait = 0;
5199
5200
5201         status_reg = instance->instancet->read_fw_status_reg(instance);
5202
5203         /*
5204          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
5205          * to host crash buffers
5206          */
5207         if (instance->drv_buf_index == 0) {
5208                 /* Buffer is already allocated for old Crash dump.
5209                  * Do OCR and do not wait for crash dump collection
5210                  */
5211                 if (instance->drv_buf_alloc) {
5212                         dev_info(&instance->pdev->dev, "earlier crash dump is "
5213                                 "not yet copied by application, ignoring this "
5214                                 "crash dump and initiating OCR\n");
5215                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5216                         writel(status_reg,
5217                                 &instance->reg_set->outbound_scratch_pad_0);
5218                         readl(&instance->reg_set->outbound_scratch_pad_0);
5219                         return;
5220                 }
5221                 megasas_alloc_host_crash_buffer(instance);
5222                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
5223                         "allocated: %d\n", instance->drv_buf_alloc);
5224         }
5225
5226         while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
5227                (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
5228                 if (!(status_reg & MFI_STATE_DMADONE)) {
5229                         /*
5230                          * Next crash dump buffer is not yet DMA'd by FW
5231                          * Check after 10ms. Wait for 1 second for FW to
5232                          * post the next buffer. If not bail out.
5233                          */
5234                         wait++;
5235                         msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5236                         status_reg = instance->instancet->read_fw_status_reg(
5237                                         instance);
5238                         continue;
5239                 }
5240
5241                 wait = 0;
5242                 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
5243                         dev_info(&instance->pdev->dev,
5244                                  "Driver is done copying the buffer: %d\n",
5245                                  instance->drv_buf_alloc);
5246                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
5247                         partial_copy = 1;
5248                         break;
5249                 } else {
5250                         memcpy(instance->crash_buf[instance->drv_buf_index],
5251                                instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
5252                         instance->drv_buf_index++;
5253                         status_reg &= ~MFI_STATE_DMADONE;
5254                 }
5255
5256                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5257                 readl(&instance->reg_set->outbound_scratch_pad_0);
5258
5259                 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
5260                 status_reg = instance->instancet->read_fw_status_reg(instance);
5261         }
5262
5263         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
5264                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
5265                         "of copied buffers: %d\n", instance->drv_buf_index);
5266                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
5267                 instance->fw_crash_state = AVAILABLE;
5268                 instance->drv_buf_index = 0;
5269                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
5270                 readl(&instance->reg_set->outbound_scratch_pad_0);
5271                 if (!partial_copy)
5272                         megasas_reset_fusion(instance->host, 0);
5273         }
5274 }
5275
5276
5277 /* Fusion OCR work queue */
5278 void megasas_fusion_ocr_wq(struct work_struct *work)
5279 {
5280         struct megasas_instance *instance =
5281                 container_of(work, struct megasas_instance, work_init);
5282
5283         megasas_reset_fusion(instance->host, 0);
5284 }
5285
5286 /* Allocate fusion context */
5287 int
5288 megasas_alloc_fusion_context(struct megasas_instance *instance)
5289 {
5290         struct fusion_context *fusion;
5291
5292         instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
5293                                          GFP_KERNEL);
5294         if (!instance->ctrl_context) {
5295                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5296                         __func__, __LINE__);
5297                 return -ENOMEM;
5298         }
5299
5300         fusion = instance->ctrl_context;
5301
5302         fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5303                                               sizeof(LD_SPAN_INFO));
5304         fusion->log_to_span =
5305                 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5306                                                 fusion->log_to_span_pages);
5307         if (!fusion->log_to_span) {
5308                 fusion->log_to_span =
5309                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5310                                            sizeof(LD_SPAN_INFO)));
5311                 if (!fusion->log_to_span) {
5312                         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5313                                 __func__, __LINE__);
5314                         kfree(instance->ctrl_context);
5315                         return -ENOMEM;
5316                 }
5317         }
5318
5319         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
5320                 sizeof(struct LD_LOAD_BALANCE_INFO));
5321         fusion->load_balance_info =
5322                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
5323                 fusion->load_balance_info_pages);
5324         if (!fusion->load_balance_info) {
5325                 fusion->load_balance_info =
5326                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
5327                                            sizeof(struct LD_LOAD_BALANCE_INFO)));
5328                 if (!fusion->load_balance_info)
5329                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
5330                                 "continuing without Load Balance support\n");
5331         }
5332
5333         return 0;
5334 }
5335
5336 void
5337 megasas_free_fusion_context(struct megasas_instance *instance)
5338 {
5339         struct fusion_context *fusion = instance->ctrl_context;
5340
5341         if (fusion) {
5342                 if (fusion->load_balance_info) {
5343                         if (is_vmalloc_addr(fusion->load_balance_info))
5344                                 vfree(fusion->load_balance_info);
5345                         else
5346                                 free_pages((ulong)fusion->load_balance_info,
5347                                         fusion->load_balance_info_pages);
5348                 }
5349
5350                 if (fusion->log_to_span) {
5351                         if (is_vmalloc_addr(fusion->log_to_span))
5352                                 vfree(fusion->log_to_span);
5353                         else
5354                                 free_pages((ulong)fusion->log_to_span,
5355                                            fusion->log_to_span_pages);
5356                 }
5357
5358                 kfree(fusion);
5359         }
5360 }
5361
5362 struct megasas_instance_template megasas_instance_template_fusion = {
5363         .enable_intr = megasas_enable_intr_fusion,
5364         .disable_intr = megasas_disable_intr_fusion,
5365         .clear_intr = megasas_clear_intr_fusion,
5366         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
5367         .adp_reset = megasas_adp_reset_fusion,
5368         .check_reset = megasas_check_reset_fusion,
5369         .service_isr = megasas_isr_fusion,
5370         .tasklet = megasas_complete_cmd_dpc_fusion,
5371         .init_adapter = megasas_init_adapter_fusion,
5372         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5373         .issue_dcmd = megasas_issue_dcmd_fusion,
5374 };