drivers/scsi/megaraid/megaraid_sas_fusion.c

   1 /*
   2  *  Linux MegaRAID driver for SAS based RAID controllers
   3  *
   4  *  Copyright (c) 2009-2013  LSI Corporation
   5  *  Copyright (c) 2013-2016  Avago Technologies
   6  *  Copyright (c) 2016-2018  Broadcom Inc.
   7  *
   8  *  This program is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU General Public License
  10  *  as published by the Free Software Foundation; either version 2
  11  *  of the License, or (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  *
  21  *  FILE: megaraid_sas_fusion.c
  22  *
  23  *  Authors: Broadcom Inc.
  24  *           Sumant Patro
  25  *           Adam Radford
  26  *           Kashyap Desai <kashyap.desai@broadcom.com>
  27  *           Sumit Saxena <sumit.saxena@broadcom.com>
  28  *
  29  *  Send feedback to: megaraidlinux.pdl@broadcom.com
  30  */
  31
  32 #include <linux/kernel.h>
  33 #include <linux/types.h>
  34 #include <linux/pci.h>
  35 #include <linux/list.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/module.h>
  38 #include <linux/spinlock.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/delay.h>
  41 #include <linux/uio.h>
  42 #include <linux/uaccess.h>
  43 #include <linux/fs.h>
  44 #include <linux/compat.h>
  45 #include <linux/blkdev.h>
  46 #include <linux/mutex.h>
  47 #include <linux/poll.h>
  48 #include <linux/vmalloc.h>
  49 #include <linux/workqueue.h>
  50
  51 #include <scsi/scsi.h>
  52 #include <scsi/scsi_cmnd.h>
  53 #include <scsi/scsi_device.h>
  54 #include <scsi/scsi_host.h>
  55 #include <scsi/scsi_dbg.h>
  56 #include <linux/dmi.h>
  57
  58 #include "megaraid_sas_fusion.h"
  59 #include "megaraid_sas.h"
  60
  61
  62 extern void megasas_free_cmds(struct megasas_instance *instance);
  63 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
  64                                            *instance);
  65 extern void
  66 megasas_complete_cmd(struct megasas_instance *instance,
  67                      struct megasas_cmd *cmd, u8 alt_status);
  68 int
  69 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
  70               int seconds);
  71
  72 void
  73 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
  74 int megasas_alloc_cmds(struct megasas_instance *instance);
  75 int
  76 megasas_clear_intr_fusion(struct megasas_instance *instance);
  77 int
  78 megasas_issue_polled(struct megasas_instance *instance,
  79                      struct megasas_cmd *cmd);
  80 void
  81 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
  82
  83 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
  84 void megaraid_sas_kill_hba(struct megasas_instance *instance);
  85
  86 extern u32 megasas_dbg_lvl;
  87 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
  88                                   int initial);
  89 void megasas_start_timer(struct megasas_instance *instance);
  90 extern struct megasas_mgmt_info megasas_mgmt_info;
  91 extern unsigned int resetwaittime;
  92 extern unsigned int dual_qdepth_disable;
  93 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
  94 static void megasas_free_reply_fusion(struct megasas_instance *instance);
  95 static inline
  96 void megasas_configure_queue_sizes(struct megasas_instance *instance);
  97 static void megasas_fusion_crash_dump(struct megasas_instance *instance);
  98 extern u32 megasas_readl(struct megasas_instance *instance,
  99                          const volatile void __iomem *addr);
 100
 101 /**
 102  * megasas_check_same_4gb_region -      check if allocation
 103  *                                      crosses same 4GB boundary or not
 104  * @instance -                          adapter's soft instance
 105  * start_addr -                 start address of DMA allocation
 106  * size -                               size of allocation in bytes
 107  * return -                             true : allocation does not cross same
 108  *                                      4GB boundary
 109  *                                      false: allocation crosses same
 110  *                                      4GB boundary
 111  */
 112 static inline bool megasas_check_same_4gb_region
 113         (struct megasas_instance *instance, dma_addr_t start_addr, size_t size)
 114 {
 115         dma_addr_t end_addr;
 116
 117         end_addr = start_addr + size;
 118
 119         if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) {
 120                 dev_err(&instance->pdev->dev,
 121                         "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n",
 122                         (unsigned long long)start_addr,
 123                         (unsigned long long)end_addr);
 124                 return false;
 125         }
 126
 127         return true;
 128 }
 129
 130 /**
 131  * megasas_enable_intr_fusion - Enables interrupts
 132  * @regs:                       MFI register set
 133  */
 134 void
 135 megasas_enable_intr_fusion(struct megasas_instance *instance)
 136 {
 137         struct megasas_register_set __iomem *regs;
 138         regs = instance->reg_set;
 139
 140         instance->mask_interrupts = 0;
 141         /* For Thunderbolt/Invader also clear intr on enable */
 142         writel(~0, &regs->outbound_intr_status);
 143         readl(&regs->outbound_intr_status);
 144
 145         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 146
 147         /* Dummy readl to force pci flush */
 148         readl(&regs->outbound_intr_mask);
 149 }
 150
 151 /**
 152  * megasas_disable_intr_fusion - Disables interrupt
 153  * @regs:                        MFI register set
 154  */
 155 void
 156 megasas_disable_intr_fusion(struct megasas_instance *instance)
 157 {
 158         u32 mask = 0xFFFFFFFF;
 159         u32 status;
 160         struct megasas_register_set __iomem *regs;
 161         regs = instance->reg_set;
 162         instance->mask_interrupts = 1;
 163
 164         writel(mask, &regs->outbound_intr_mask);
 165         /* Dummy readl to force pci flush */
 166         status = readl(&regs->outbound_intr_mask);
 167 }
 168
 169 int
 170 megasas_clear_intr_fusion(struct megasas_instance *instance)
 171 {
 172         u32 status;
 173         struct megasas_register_set __iomem *regs;
 174         regs = instance->reg_set;
 175         /*
 176          * Check if it is our interrupt
 177          */
 178         status = megasas_readl(instance,
 179                                &regs->outbound_intr_status);
 180
 181         if (status & 1) {
 182                 writel(status, &regs->outbound_intr_status);
 183                 readl(&regs->outbound_intr_status);
 184                 return 1;
 185         }
 186         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 187                 return 0;
 188
 189         return 1;
 190 }
 191
 192 /**
 193  * megasas_get_cmd_fusion -     Get a command from the free pool
 194  * @instance:           Adapter soft state
 195  *
 196  * Returns a blk_tag indexed mpt frame
 197  */
 198 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 199                                                   *instance, u32 blk_tag)
 200 {
 201         struct fusion_context *fusion;
 202
 203         fusion = instance->ctrl_context;
 204         return fusion->cmd_list[blk_tag];
 205 }
 206
 207 /**
 208  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 209  * @instance:           Adapter soft state
 210  * @cmd:                Command packet to be returned to free command pool
 211  */
 212 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 213         struct megasas_cmd_fusion *cmd)
 214 {
 215         cmd->scmd = NULL;
 216         memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 217         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 218         cmd->cmd_completed = false;
 219 }
 220
 221 /**
 222  * megasas_fire_cmd_fusion -    Sends command to the FW
 223  * @instance:                   Adapter soft state
 224  * @req_desc:                   64bit Request descriptor
 225  *
 226  * Perform PCI Write.
 227  */
 228
 229 static void
 230 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 231                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 232 {
 233 #if defined(writeq) && defined(CONFIG_64BIT)
 234         u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
 235                 le32_to_cpu(req_desc->u.low));
 236
 237         writeq(req_data, &instance->reg_set->inbound_low_queue_port);
 238 #else
 239         unsigned long flags;
 240         spin_lock_irqsave(&instance->hba_lock, flags);
 241         writel(le32_to_cpu(req_desc->u.low),
 242                 &instance->reg_set->inbound_low_queue_port);
 243         writel(le32_to_cpu(req_desc->u.high),
 244                 &instance->reg_set->inbound_high_queue_port);
 245         spin_unlock_irqrestore(&instance->hba_lock, flags);
 246 #endif
 247 }
 248
 249 /**
 250  * megasas_fusion_update_can_queue -    Do all Adapter Queue depth related calculations here
 251  * @instance:                                                   Adapter soft state
 252  * fw_boot_context:                                             Whether this function called during probe or after OCR
 253  *
 254  * This function is only for fusion controllers.
 255  * Update host can queue, if firmware downgrade max supported firmware commands.
 256  * Firmware upgrade case will be skiped because underlying firmware has
 257  * more resource than exposed to the OS.
 258  *
 259  */
 260 static void
 261 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
 262 {
 263         u16 cur_max_fw_cmds = 0;
 264         u16 ldio_threshold = 0;
 265         struct megasas_register_set __iomem *reg_set;
 266
 267         reg_set = instance->reg_set;
 268
 269         /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */
 270         if (instance->adapter_type < VENTURA_SERIES)
 271                 cur_max_fw_cmds =
 272                 megasas_readl(instance,
 273                               &instance->reg_set->outbound_scratch_pad_2) & 0x00FFFF;
 274
 275         if (dual_qdepth_disable || !cur_max_fw_cmds)
 276                 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
 277         else
 278                 ldio_threshold =
 279                         (instance->instancet->read_fw_status_reg(instance) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
 280
 281         dev_info(&instance->pdev->dev,
 282                  "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n",
 283                  cur_max_fw_cmds, ldio_threshold);
 284
 285         if (fw_boot_context == OCR_CONTEXT) {
 286                 cur_max_fw_cmds = cur_max_fw_cmds - 1;
 287                 if (cur_max_fw_cmds < instance->max_fw_cmds) {
 288                         instance->cur_can_queue =
 289                                 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
 290                                                 MEGASAS_FUSION_IOCTL_CMDS);
 291                         instance->host->can_queue = instance->cur_can_queue;
 292                         instance->ldio_threshold = ldio_threshold;
 293                 }
 294         } else {
 295                 instance->max_fw_cmds = cur_max_fw_cmds;
 296                 instance->ldio_threshold = ldio_threshold;
 297
 298                 if (reset_devices)
 299                         instance->max_fw_cmds = min(instance->max_fw_cmds,
 300                                                 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
 301                 /*
 302                 * Reduce the max supported cmds by 1. This is to ensure that the
 303                 * reply_q_sz (1 more than the max cmd that driver may send)
 304                 * does not exceed max cmds that the FW can support
 305                 */
 306                 instance->max_fw_cmds = instance->max_fw_cmds-1;
 307         }
 308 }
 309 /**
 310  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
 311  * @instance:           Adapter soft state
 312  */
 313 void
 314 megasas_free_cmds_fusion(struct megasas_instance *instance)
 315 {
 316         int i;
 317         struct fusion_context *fusion = instance->ctrl_context;
 318         struct megasas_cmd_fusion *cmd;
 319
 320         if (fusion->sense)
 321                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 322                               fusion->sense_phys_addr);
 323
 324         /* SG */
 325         if (fusion->cmd_list) {
 326                 for (i = 0; i < instance->max_mpt_cmds; i++) {
 327                         cmd = fusion->cmd_list[i];
 328                         if (cmd) {
 329                                 if (cmd->sg_frame)
 330                                         dma_pool_free(fusion->sg_dma_pool,
 331                                                       cmd->sg_frame,
 332                                                       cmd->sg_frame_phys_addr);
 333                         }
 334                         kfree(cmd);
 335                 }
 336                 kfree(fusion->cmd_list);
 337         }
 338
 339         if (fusion->sg_dma_pool) {
 340                 dma_pool_destroy(fusion->sg_dma_pool);
 341                 fusion->sg_dma_pool = NULL;
 342         }
 343         if (fusion->sense_dma_pool) {
 344                 dma_pool_destroy(fusion->sense_dma_pool);
 345                 fusion->sense_dma_pool = NULL;
 346         }
 347
 348
 349         /* Reply Frame, Desc*/
 350         if (instance->is_rdpq)
 351                 megasas_free_rdpq_fusion(instance);
 352         else
 353                 megasas_free_reply_fusion(instance);
 354
 355         /* Request Frame, Desc*/
 356         if (fusion->req_frames_desc)
 357                 dma_free_coherent(&instance->pdev->dev,
 358                         fusion->request_alloc_sz, fusion->req_frames_desc,
 359                         fusion->req_frames_desc_phys);
 360         if (fusion->io_request_frames)
 361                 dma_pool_free(fusion->io_request_frames_pool,
 362                         fusion->io_request_frames,
 363                         fusion->io_request_frames_phys);
 364         if (fusion->io_request_frames_pool) {
 365                 dma_pool_destroy(fusion->io_request_frames_pool);
 366                 fusion->io_request_frames_pool = NULL;
 367         }
 368 }
 369
 370 /**
 371  * megasas_create_sg_sense_fusion -     Creates DMA pool for cmd frames
 372  * @instance:                   Adapter soft state
 373  *
 374  */
 375 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 376 {
 377         int i;
 378         u16 max_cmd;
 379         struct fusion_context *fusion;
 380         struct megasas_cmd_fusion *cmd;
 381         int sense_sz;
 382         u32 offset;
 383
 384         fusion = instance->ctrl_context;
 385         max_cmd = instance->max_fw_cmds;
 386         sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
 387
 388         fusion->sg_dma_pool =
 389                         dma_pool_create("mr_sg", &instance->pdev->dev,
 390                                 instance->max_chain_frame_sz,
 391                                 MR_DEFAULT_NVME_PAGE_SIZE, 0);
 392         /* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
 393         fusion->sense_dma_pool =
 394                         dma_pool_create("mr_sense", &instance->pdev->dev,
 395                                 sense_sz, 64, 0);
 396
 397         if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
 398                 dev_err(&instance->pdev->dev,
 399                         "Failed from %s %d\n",  __func__, __LINE__);
 400                 return -ENOMEM;
 401         }
 402
 403         fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 404                                        GFP_KERNEL, &fusion->sense_phys_addr);
 405         if (!fusion->sense) {
 406                 dev_err(&instance->pdev->dev,
 407                         "failed from %s %d\n",  __func__, __LINE__);
 408                 return -ENOMEM;
 409         }
 410
 411         /* sense buffer, request frame and reply desc pool requires to be in
 412          * same 4 gb region. Below function will check this.
 413          * In case of failure, new pci pool will be created with updated
 414          * alignment.
 415          * Older allocation and pool will be destroyed.
 416          * Alignment will be used such a way that next allocation if success,
 417          * will always meet same 4gb region requirement.
 418          * Actual requirement is not alignment, but we need start and end of
 419          * DMA address must have same upper 32 bit address.
 420          */
 421
 422         if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
 423                                            sense_sz)) {
 424                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 425                               fusion->sense_phys_addr);
 426                 fusion->sense = NULL;
 427                 dma_pool_destroy(fusion->sense_dma_pool);
 428
 429                 fusion->sense_dma_pool =
 430                         dma_pool_create("mr_sense_align", &instance->pdev->dev,
 431                                         sense_sz, roundup_pow_of_two(sense_sz),
 432                                         0);
 433                 if (!fusion->sense_dma_pool) {
 434                         dev_err(&instance->pdev->dev,
 435                                 "Failed from %s %d\n",  __func__, __LINE__);
 436                         return -ENOMEM;
 437                 }
 438                 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 439                                                GFP_KERNEL,
 440                                                &fusion->sense_phys_addr);
 441                 if (!fusion->sense) {
 442                         dev_err(&instance->pdev->dev,
 443                                 "failed from %s %d\n",  __func__, __LINE__);
 444                         return -ENOMEM;
 445                 }
 446         }
 447
 448         /*
 449          * Allocate and attach a frame to each of the commands in cmd_list
 450          */
 451         for (i = 0; i < max_cmd; i++) {
 452                 cmd = fusion->cmd_list[i];
 453                 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
 454                                         GFP_KERNEL, &cmd->sg_frame_phys_addr);
 455
 456                 offset = SCSI_SENSE_BUFFERSIZE * i;
 457                 cmd->sense = (u8 *)fusion->sense + offset;
 458                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 459
 460                 if (!cmd->sg_frame) {
 461                         dev_err(&instance->pdev->dev,
 462                                 "Failed from %s %d\n",  __func__, __LINE__);
 463                         return -ENOMEM;
 464                 }
 465         }
 466
 467         /* create sense buffer for the raid 1/10 fp */
 468         for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
 469                 cmd = fusion->cmd_list[i];
 470                 offset = SCSI_SENSE_BUFFERSIZE * i;
 471                 cmd->sense = (u8 *)fusion->sense + offset;
 472                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 473
 474         }
 475
 476         return 0;
 477 }
 478
 479 int
 480 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
 481 {
 482         u32 max_mpt_cmd, i, j;
 483         struct fusion_context *fusion;
 484
 485         fusion = instance->ctrl_context;
 486
 487         max_mpt_cmd = instance->max_mpt_cmds;
 488
 489         /*
 490          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
 491          * Allocate the dynamic array first and then allocate individual
 492          * commands.
 493          */
 494         fusion->cmd_list =
 495                 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *),
 496                         GFP_KERNEL);
 497         if (!fusion->cmd_list) {
 498                 dev_err(&instance->pdev->dev,
 499                         "Failed from %s %d\n",  __func__, __LINE__);
 500                 return -ENOMEM;
 501         }
 502
 503         for (i = 0; i < max_mpt_cmd; i++) {
 504                 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
 505                                               GFP_KERNEL);
 506                 if (!fusion->cmd_list[i]) {
 507                         for (j = 0; j < i; j++)
 508                                 kfree(fusion->cmd_list[j]);
 509                         kfree(fusion->cmd_list);
 510                         dev_err(&instance->pdev->dev,
 511                                 "Failed from %s %d\n",  __func__, __LINE__);
 512                         return -ENOMEM;
 513                 }
 514         }
 515
 516         return 0;
 517 }
 518 int
 519 megasas_alloc_request_fusion(struct megasas_instance *instance)
 520 {
 521         struct fusion_context *fusion;
 522
 523         fusion = instance->ctrl_context;
 524
 525 retry_alloc:
 526         fusion->io_request_frames_pool =
 527                         dma_pool_create("mr_ioreq", &instance->pdev->dev,
 528                                 fusion->io_frames_alloc_sz, 16, 0);
 529
 530         if (!fusion->io_request_frames_pool) {
 531                 dev_err(&instance->pdev->dev,
 532                         "Failed from %s %d\n",  __func__, __LINE__);
 533                 return -ENOMEM;
 534         }
 535
 536         fusion->io_request_frames =
 537                         dma_pool_alloc(fusion->io_request_frames_pool,
 538                                 GFP_KERNEL, &fusion->io_request_frames_phys);
 539         if (!fusion->io_request_frames) {
 540                 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
 541                         instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
 542                         dma_pool_destroy(fusion->io_request_frames_pool);
 543                         megasas_configure_queue_sizes(instance);
 544                         goto retry_alloc;
 545                 } else {
 546                         dev_err(&instance->pdev->dev,
 547                                 "Failed from %s %d\n",  __func__, __LINE__);
 548                         return -ENOMEM;
 549                 }
 550         }
 551
 552         if (!megasas_check_same_4gb_region(instance,
 553                                            fusion->io_request_frames_phys,
 554                                            fusion->io_frames_alloc_sz)) {
 555                 dma_pool_free(fusion->io_request_frames_pool,
 556                               fusion->io_request_frames,
 557                               fusion->io_request_frames_phys);
 558                 fusion->io_request_frames = NULL;
 559                 dma_pool_destroy(fusion->io_request_frames_pool);
 560
 561                 fusion->io_request_frames_pool =
 562                         dma_pool_create("mr_ioreq_align",
 563                                         &instance->pdev->dev,
 564                                         fusion->io_frames_alloc_sz,
 565                                         roundup_pow_of_two(fusion->io_frames_alloc_sz),
 566                                         0);
 567
 568                 if (!fusion->io_request_frames_pool) {
 569                         dev_err(&instance->pdev->dev,
 570                                 "Failed from %s %d\n",  __func__, __LINE__);
 571                         return -ENOMEM;
 572                 }
 573
 574                 fusion->io_request_frames =
 575                         dma_pool_alloc(fusion->io_request_frames_pool,
 576                                        GFP_KERNEL,
 577                                        &fusion->io_request_frames_phys);
 578
 579                 if (!fusion->io_request_frames) {
 580                         dev_err(&instance->pdev->dev,
 581                                 "Failed from %s %d\n",  __func__, __LINE__);
 582                         return -ENOMEM;
 583                 }
 584         }
 585
 586         fusion->req_frames_desc =
 587                 dma_alloc_coherent(&instance->pdev->dev,
 588                                    fusion->request_alloc_sz,
 589                                    &fusion->req_frames_desc_phys, GFP_KERNEL);
 590         if (!fusion->req_frames_desc) {
 591                 dev_err(&instance->pdev->dev,
 592                         "Failed from %s %d\n",  __func__, __LINE__);
 593                 return -ENOMEM;
 594         }
 595
 596         return 0;
 597 }
 598
 599 int
 600 megasas_alloc_reply_fusion(struct megasas_instance *instance)
 601 {
 602         int i, count;
 603         struct fusion_context *fusion;
 604         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 605         fusion = instance->ctrl_context;
 606
 607         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 608         fusion->reply_frames_desc_pool =
 609                         dma_pool_create("mr_reply", &instance->pdev->dev,
 610                                 fusion->reply_alloc_sz * count, 16, 0);
 611
 612         if (!fusion->reply_frames_desc_pool) {
 613                 dev_err(&instance->pdev->dev,
 614                         "Failed from %s %d\n",  __func__, __LINE__);
 615                 return -ENOMEM;
 616         }
 617
 618         fusion->reply_frames_desc[0] =
 619                 dma_pool_alloc(fusion->reply_frames_desc_pool,
 620                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
 621         if (!fusion->reply_frames_desc[0]) {
 622                 dev_err(&instance->pdev->dev,
 623                         "Failed from %s %d\n",  __func__, __LINE__);
 624                 return -ENOMEM;
 625         }
 626
 627         if (!megasas_check_same_4gb_region(instance,
 628                                            fusion->reply_frames_desc_phys[0],
 629                                            (fusion->reply_alloc_sz * count))) {
 630                 dma_pool_free(fusion->reply_frames_desc_pool,
 631                               fusion->reply_frames_desc[0],
 632                               fusion->reply_frames_desc_phys[0]);
 633                 fusion->reply_frames_desc[0] = NULL;
 634                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 635
 636                 fusion->reply_frames_desc_pool =
 637                         dma_pool_create("mr_reply_align",
 638                                         &instance->pdev->dev,
 639                                         fusion->reply_alloc_sz * count,
 640                                         roundup_pow_of_two(fusion->reply_alloc_sz * count),
 641                                         0);
 642
 643                 if (!fusion->reply_frames_desc_pool) {
 644                         dev_err(&instance->pdev->dev,
 645                                 "Failed from %s %d\n",  __func__, __LINE__);
 646                         return -ENOMEM;
 647                 }
 648
 649                 fusion->reply_frames_desc[0] =
 650                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 651                                        GFP_KERNEL,
 652                                        &fusion->reply_frames_desc_phys[0]);
 653
 654                 if (!fusion->reply_frames_desc[0]) {
 655                         dev_err(&instance->pdev->dev,
 656                                 "Failed from %s %d\n",  __func__, __LINE__);
 657                         return -ENOMEM;
 658                 }
 659         }
 660
 661         reply_desc = fusion->reply_frames_desc[0];
 662         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 663                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 664
 665         /* This is not a rdpq mode, but driver still populate
 666          * reply_frame_desc array to use same msix index in ISR path.
 667          */
 668         for (i = 0; i < (count - 1); i++)
 669                 fusion->reply_frames_desc[i + 1] =
 670                         fusion->reply_frames_desc[i] +
 671                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
 672
 673         return 0;
 674 }
 675
 676 int
 677 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 678 {
 679         int i, j, k, msix_count;
 680         struct fusion_context *fusion;
 681         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 682         union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
 683         dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
 684         u8 dma_alloc_count, abs_index;
 685         u32 chunk_size, array_size, offset;
 686
 687         fusion = instance->ctrl_context;
 688         chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
 689         array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
 690                      MAX_MSIX_QUEUES_FUSION;
 691
 692         fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev,
 693                                                array_size, &fusion->rdpq_phys,
 694                                                GFP_KERNEL);
 695         if (!fusion->rdpq_virt) {
 696                 dev_err(&instance->pdev->dev,
 697                         "Failed from %s %d\n",  __func__, __LINE__);
 698                 return -ENOMEM;
 699         }
 700
 701         msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 702
 703         fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
 704                                                          &instance->pdev->dev,
 705                                                          chunk_size, 16, 0);
 706         fusion->reply_frames_desc_pool_align =
 707                                 dma_pool_create("mr_rdpq_align",
 708                                                 &instance->pdev->dev,
 709                                                 chunk_size,
 710                                                 roundup_pow_of_two(chunk_size),
 711                                                 0);
 712
 713         if (!fusion->reply_frames_desc_pool ||
 714             !fusion->reply_frames_desc_pool_align) {
 715                 dev_err(&instance->pdev->dev,
 716                         "Failed from %s %d\n",  __func__, __LINE__);
 717                 return -ENOMEM;
 718         }
 719
 720 /*
 721  * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
 722  * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
 723  * within 4GB boundary and also reply queues in a set must have same
 724  * upper 32-bits in their memory address. so here driver is allocating the
 725  * DMA'able memory for reply queues according. Driver uses limitation of
 726  * VENTURA_SERIES to manage INVADER_SERIES as well.
 727  */
 728         dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
 729
 730         for (i = 0; i < dma_alloc_count; i++) {
 731                 rdpq_chunk_virt[i] =
 732                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 733                                        GFP_KERNEL, &rdpq_chunk_phys[i]);
 734                 if (!rdpq_chunk_virt[i]) {
 735                         dev_err(&instance->pdev->dev,
 736                                 "Failed from %s %d\n",  __func__, __LINE__);
 737                         return -ENOMEM;
 738                 }
 739                 /* reply desc pool requires to be in same 4 gb region.
 740                  * Below function will check this.
 741                  * In case of failure, new pci pool will be created with updated
 742                  * alignment.
 743                  * For RDPQ buffers, driver always allocate two separate pci pool.
 744                  * Alignment will be used such a way that next allocation if
 745                  * success, will always meet same 4gb region requirement.
 746                  * rdpq_tracker keep track of each buffer's physical,
 747                  * virtual address and pci pool descriptor. It will help driver
 748                  * while freeing the resources.
 749                  *
 750                  */
 751                 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
 752                                                    chunk_size)) {
 753                         dma_pool_free(fusion->reply_frames_desc_pool,
 754                                       rdpq_chunk_virt[i],
 755                                       rdpq_chunk_phys[i]);
 756
 757                         rdpq_chunk_virt[i] =
 758                                 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
 759                                                GFP_KERNEL, &rdpq_chunk_phys[i]);
 760                         if (!rdpq_chunk_virt[i]) {
 761                                 dev_err(&instance->pdev->dev,
 762                                         "Failed from %s %d\n",
 763                                         __func__, __LINE__);
 764                                 return -ENOMEM;
 765                         }
 766                         fusion->rdpq_tracker[i].dma_pool_ptr =
 767                                         fusion->reply_frames_desc_pool_align;
 768                 } else {
 769                         fusion->rdpq_tracker[i].dma_pool_ptr =
 770                                         fusion->reply_frames_desc_pool;
 771                 }
 772
 773                 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
 774                 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
 775         }
 776
 777         for (k = 0; k < dma_alloc_count; k++) {
 778                 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
 779                         abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
 780
 781                         if (abs_index == msix_count)
 782                                 break;
 783                         offset = fusion->reply_alloc_sz * i;
 784                         fusion->rdpq_virt[abs_index].RDPQBaseAddress =
 785                                         cpu_to_le64(rdpq_chunk_phys[k] + offset);
 786                         fusion->reply_frames_desc_phys[abs_index] =
 787                                         rdpq_chunk_phys[k] + offset;
 788                         fusion->reply_frames_desc[abs_index] =
 789                                         (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
 790
 791                         reply_desc = fusion->reply_frames_desc[abs_index];
 792                         for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
 793                                 reply_desc->Words = ULLONG_MAX;
 794                 }
 795         }
 796
 797         return 0;
 798 }
 799
 800 static void
 801 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 802
 803         int i;
 804         struct fusion_context *fusion;
 805
 806         fusion = instance->ctrl_context;
 807
 808         for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
 809                 if (fusion->rdpq_tracker[i].pool_entry_virt)
 810                         dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
 811                                       fusion->rdpq_tracker[i].pool_entry_virt,
 812                                       fusion->rdpq_tracker[i].pool_entry_phys);
 813
 814         }
 815
 816         dma_pool_destroy(fusion->reply_frames_desc_pool);
 817         dma_pool_destroy(fusion->reply_frames_desc_pool_align);
 818
 819         if (fusion->rdpq_virt)
 820                 dma_free_coherent(&instance->pdev->dev,
 821                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 822                         fusion->rdpq_virt, fusion->rdpq_phys);
 823 }
 824
 825 static void
 826 megasas_free_reply_fusion(struct megasas_instance *instance) {
 827
 828         struct fusion_context *fusion;
 829
 830         fusion = instance->ctrl_context;
 831
 832         if (fusion->reply_frames_desc[0])
 833                 dma_pool_free(fusion->reply_frames_desc_pool,
 834                         fusion->reply_frames_desc[0],
 835                         fusion->reply_frames_desc_phys[0]);
 836
 837         dma_pool_destroy(fusion->reply_frames_desc_pool);
 838
 839 }
 840
 841
 842 /**
 843  * megasas_alloc_cmds_fusion -  Allocates the command packets
 844  * @instance:           Adapter soft state
 845  *
 846  *
 847  * Each frame has a 32-bit field called context. This context is used to get
 848  * back the megasas_cmd_fusion from the frame when a frame gets completed
 849  * In this driver, the 32 bit values are the indices into an array cmd_list.
 850  * This array is used only to look up the megasas_cmd_fusion given the context.
 851  * The free commands themselves are maintained in a linked list called cmd_pool.
 852  *
 853  * cmds are formed in the io_request and sg_frame members of the
 854  * megasas_cmd_fusion. The context field is used to get a request descriptor
 855  * and is used as SMID of the cmd.
 856  * SMID value range is from 1 to max_fw_cmds.
 857  */
 858 int
 859 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 860 {
 861         int i;
 862         struct fusion_context *fusion;
 863         struct megasas_cmd_fusion *cmd;
 864         u32 offset;
 865         dma_addr_t io_req_base_phys;
 866         u8 *io_req_base;
 867
 868
 869         fusion = instance->ctrl_context;
 870
 871         if (megasas_alloc_request_fusion(instance))
 872                 goto fail_exit;
 873
 874         if (instance->is_rdpq) {
 875                 if (megasas_alloc_rdpq_fusion(instance))
 876                         goto fail_exit;
 877         } else
 878                 if (megasas_alloc_reply_fusion(instance))
 879                         goto fail_exit;
 880
 881         if (megasas_alloc_cmdlist_fusion(instance))
 882                 goto fail_exit;
 883
 884         dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
 885                  instance->max_fw_cmds);
 886
 887         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 888         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 889         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 890
 891         /*
 892          * Add all the commands to command pool (fusion->cmd_pool)
 893          */
 894
 895         /* SMID 0 is reserved. Set SMID/index from 1 */
 896         for (i = 0; i < instance->max_mpt_cmds; i++) {
 897                 cmd = fusion->cmd_list[i];
 898                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
 899                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
 900                 cmd->index = i + 1;
 901                 cmd->scmd = NULL;
 902                 cmd->sync_cmd_idx =
 903                 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
 904                                 (i - instance->max_scsi_cmds) :
 905                                 (u32)ULONG_MAX; /* Set to Invalid */
 906                 cmd->instance = instance;
 907                 cmd->io_request =
 908                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
 909                   (io_req_base + offset);
 910                 memset(cmd->io_request, 0,
 911                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 912                 cmd->io_request_phys_addr = io_req_base_phys + offset;
 913                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 914         }
 915
 916         if (megasas_create_sg_sense_fusion(instance))
 917                 goto fail_exit;
 918
 919         return 0;
 920
 921 fail_exit:
 922         megasas_free_cmds_fusion(instance);
 923         return -ENOMEM;
 924 }
 925
 926 /**
 927  * wait_and_poll -      Issues a polling command
 928  * @instance:                   Adapter soft state
 929  * @cmd:                        Command packet to be issued
 930  *
 931  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 932  */
 933 int
 934 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 935         int seconds)
 936 {
 937         int i;
 938         struct megasas_header *frame_hdr = &cmd->frame->hdr;
 939
 940         u32 msecs = seconds * 1000;
 941
 942         /*
 943          * Wait for cmd_status to change
 944          */
 945         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
 946                 rmb();
 947                 msleep(20);
 948         }
 949
 950         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
 951                 return DCMD_TIMEOUT;
 952         else if (frame_hdr->cmd_status == MFI_STAT_OK)
 953                 return DCMD_SUCCESS;
 954         else
 955                 return DCMD_FAILED;
 956 }
 957
 958 /**
 959  * megasas_ioc_init_fusion -    Initializes the FW
 960  * @instance:           Adapter soft state
 961  *
 962  * Issues the IOC Init cmd
 963  */
 964 int
 965 megasas_ioc_init_fusion(struct megasas_instance *instance)
 966 {
 967         struct megasas_init_frame *init_frame;
 968         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
 969         dma_addr_t      ioc_init_handle;
 970         struct megasas_cmd *cmd;
 971         u8 ret, cur_rdpq_mode;
 972         struct fusion_context *fusion;
 973         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
 974         int i;
 975         struct megasas_header *frame_hdr;
 976         const char *sys_info;
 977         MFI_CAPABILITIES *drv_ops;
 978         u32 scratch_pad_1;
 979         ktime_t time;
 980         bool cur_fw_64bit_dma_capable;
 981
 982         fusion = instance->ctrl_context;
 983
 984         ioc_init_handle = fusion->ioc_init_request_phys;
 985         IOCInitMessage = fusion->ioc_init_request;
 986
 987         cmd = fusion->ioc_init_cmd;
 988
 989         scratch_pad_1 = megasas_readl
 990                 (instance, &instance->reg_set->outbound_scratch_pad_1);
 991
 992         cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
 993
 994         if (instance->adapter_type == INVADER_SERIES) {
 995                 cur_fw_64bit_dma_capable =
 996                         (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
 997
 998                 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
 999                         dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1000                                 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1001                         megaraid_sas_kill_hba(instance);
1002                         ret = 1;
1003                         goto fail_fw_init;
1004                 }
1005         }
1006
1007         if (instance->is_rdpq && !cur_rdpq_mode) {
1008                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1009                         " from RDPQ mode to non RDPQ mode\n");
1010                 ret = 1;
1011                 goto fail_fw_init;
1012         }
1013
1014         instance->fw_sync_cache_support = (scratch_pad_1 &
1015                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1016         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1017                  instance->fw_sync_cache_support ? "Yes" : "No");
1018
1019         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1020
1021         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1022         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1023         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1024         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1025         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1026
1027         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1028         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1029                         cpu_to_le64(fusion->rdpq_phys) :
1030                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1031         IOCInitMessage->MsgFlags = instance->is_rdpq ?
1032                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1033         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1034         IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1035         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1036         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1037
1038         time = ktime_get_real();
1039         /* Convert to milliseconds as per FW requirement */
1040         IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1041
1042         init_frame = (struct megasas_init_frame *)cmd->frame;
1043         memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1044
1045         frame_hdr = &cmd->frame->hdr;
1046         frame_hdr->cmd_status = 0xFF;
1047         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1048
1049         init_frame->cmd = MFI_CMD_INIT;
1050         init_frame->cmd_status = 0xFF;
1051
1052         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1053
1054         /* driver support Extended MSIX */
1055         if (instance->adapter_type >= INVADER_SERIES)
1056                 drv_ops->mfi_capabilities.support_additional_msix = 1;
1057         /* driver supports HA / Remote LUN over Fast Path interface */
1058         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1059
1060         drv_ops->mfi_capabilities.support_max_255lds = 1;
1061         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1062         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1063
1064         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1065                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1066
1067         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1068         if (!dual_qdepth_disable)
1069                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1070
1071         drv_ops->mfi_capabilities.support_qd_throttling = 1;
1072         drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1073         drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1074         drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 1;
1075
1076         if (instance->consistent_mask_64bit)
1077                 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1078
1079         /* Convert capability to LE32 */
1080         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1081
1082         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1083         if (instance->system_info_buf && sys_info) {
1084                 memcpy(instance->system_info_buf->systemId, sys_info,
1085                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1086                 instance->system_info_buf->systemIdLength =
1087                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1088                 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1089                 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1090         }
1091
1092         init_frame->queue_info_new_phys_addr_hi =
1093                 cpu_to_le32(upper_32_bits(ioc_init_handle));
1094         init_frame->queue_info_new_phys_addr_lo =
1095                 cpu_to_le32(lower_32_bits(ioc_init_handle));
1096         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1097
1098         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1099         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1100         req_desc.MFAIo.RequestFlags =
1101                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1102                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1103
1104         /*
1105          * disable the intr before firing the init frame
1106          */
1107         instance->instancet->disable_intr(instance);
1108
1109         for (i = 0; i < (10 * 1000); i += 20) {
1110                 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1)
1111                         msleep(20);
1112                 else
1113                         break;
1114         }
1115
1116         megasas_fire_cmd_fusion(instance, &req_desc);
1117
1118         wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS);
1119
1120         frame_hdr = &cmd->frame->hdr;
1121         if (frame_hdr->cmd_status != 0) {
1122                 ret = 1;
1123                 goto fail_fw_init;
1124         }
1125
1126         return 0;
1127
1128 fail_fw_init:
1129         dev_err(&instance->pdev->dev,
1130                 "Init cmd return status FAILED for SCSI host %d\n",
1131                 instance->host->host_no);
1132
1133         return ret;
1134 }
1135
1136 /**
1137  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
1138  * @instance:           Adapter soft state
1139  * @pend:               set to 1, if it is pended jbod map.
1140  *
1141  * Issue Jbod map to the firmware. If it is pended command,
1142  * issue command and return. If it is first instance of jbod map
1143  * issue and receive command.
1144  */
1145 int
1146 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1147         int ret = 0;
1148         u32 pd_seq_map_sz;
1149         struct megasas_cmd *cmd;
1150         struct megasas_dcmd_frame *dcmd;
1151         struct fusion_context *fusion = instance->ctrl_context;
1152         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1153         dma_addr_t pd_seq_h;
1154
1155         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1156         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1157         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
1158                         (sizeof(struct MR_PD_CFG_SEQ) *
1159                         (MAX_PHYSICAL_DEVICES - 1));
1160
1161         cmd = megasas_get_cmd(instance);
1162         if (!cmd) {
1163                 dev_err(&instance->pdev->dev,
1164                         "Could not get mfi cmd. Fail from %s %d\n",
1165                         __func__, __LINE__);
1166                 return -ENOMEM;
1167         }
1168
1169         dcmd = &cmd->frame->dcmd;
1170
1171         memset(pd_sync, 0, pd_seq_map_sz);
1172         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1173
1174         if (pend) {
1175                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1176                 dcmd->flags = MFI_FRAME_DIR_WRITE;
1177                 instance->jbod_seq_cmd = cmd;
1178         } else {
1179                 dcmd->flags = MFI_FRAME_DIR_READ;
1180         }
1181
1182         dcmd->cmd = MFI_CMD_DCMD;
1183         dcmd->cmd_status = 0xFF;
1184         dcmd->sge_count = 1;
1185         dcmd->timeout = 0;
1186         dcmd->pad_0 = 0;
1187         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1188         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1189
1190         megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1191
1192         if (pend) {
1193                 instance->instancet->issue_dcmd(instance, cmd);
1194                 return 0;
1195         }
1196
1197         /* Below code is only for non pended DCMD */
1198         if (!instance->mask_interrupts)
1199                 ret = megasas_issue_blocked_cmd(instance, cmd,
1200                         MFI_IO_TIMEOUT_SECS);
1201         else
1202                 ret = megasas_issue_polled(instance, cmd);
1203
1204         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1205                 dev_warn(&instance->pdev->dev,
1206                         "driver supports max %d JBOD, but FW reports %d\n",
1207                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1208                 ret = -EINVAL;
1209         }
1210
1211         if (ret == DCMD_TIMEOUT)
1212                 megaraid_sas_kill_hba(instance);
1213
1214         if (ret == DCMD_SUCCESS)
1215                 instance->pd_seq_map_id++;
1216
1217         megasas_return_cmd(instance, cmd);
1218         return ret;
1219 }
1220
1221 /*
1222  * megasas_get_ld_map_info -    Returns FW's ld_map structure
1223  * @instance:                           Adapter soft state
1224  * @pend:                               Pend the command or not
1225  * Issues an internal command (DCMD) to get the FW's controller PD
1226  * list structure.  This information is mainly used to find out SYSTEM
1227  * supported by the FW.
1228  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1229  * dcmd.mbox.b[0]       - number of LDs being sync'd
1230  * dcmd.mbox.b[1]       - 0 - complete command immediately.
1231  *                      - 1 - pend till config change
1232  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1233  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1234  *                              uses extended struct MR_FW_RAID_MAP_EXT
1235  */
1236 static int
1237 megasas_get_ld_map_info(struct megasas_instance *instance)
1238 {
1239         int ret = 0;
1240         struct megasas_cmd *cmd;
1241         struct megasas_dcmd_frame *dcmd;
1242         void *ci;
1243         dma_addr_t ci_h = 0;
1244         u32 size_map_info;
1245         struct fusion_context *fusion;
1246
1247         cmd = megasas_get_cmd(instance);
1248
1249         if (!cmd) {
1250                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1251                 return -ENOMEM;
1252         }
1253
1254         fusion = instance->ctrl_context;
1255
1256         if (!fusion) {
1257                 megasas_return_cmd(instance, cmd);
1258                 return -ENXIO;
1259         }
1260
1261         dcmd = &cmd->frame->dcmd;
1262
1263         size_map_info = fusion->current_map_sz;
1264
1265         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1266         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1267
1268         if (!ci) {
1269                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1270                 megasas_return_cmd(instance, cmd);
1271                 return -ENOMEM;
1272         }
1273
1274         memset(ci, 0, fusion->max_map_sz);
1275         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1276         dcmd->cmd = MFI_CMD_DCMD;
1277         dcmd->cmd_status = 0xFF;
1278         dcmd->sge_count = 1;
1279         dcmd->flags = MFI_FRAME_DIR_READ;
1280         dcmd->timeout = 0;
1281         dcmd->pad_0 = 0;
1282         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1283         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1284
1285         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1286
1287         if (!instance->mask_interrupts)
1288                 ret = megasas_issue_blocked_cmd(instance, cmd,
1289                         MFI_IO_TIMEOUT_SECS);
1290         else
1291                 ret = megasas_issue_polled(instance, cmd);
1292
1293         if (ret == DCMD_TIMEOUT)
1294                 megaraid_sas_kill_hba(instance);
1295
1296         megasas_return_cmd(instance, cmd);
1297
1298         return ret;
1299 }
1300
1301 u8
1302 megasas_get_map_info(struct megasas_instance *instance)
1303 {
1304         struct fusion_context *fusion = instance->ctrl_context;
1305
1306         fusion->fast_path_io = 0;
1307         if (!megasas_get_ld_map_info(instance)) {
1308                 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1309                         fusion->fast_path_io = 1;
1310                         return 0;
1311                 }
1312         }
1313         return 1;
1314 }
1315
1316 /*
1317  * megasas_sync_map_info -      Returns FW's ld_map structure
1318  * @instance:                           Adapter soft state
1319  *
1320  * Issues an internal command (DCMD) to get the FW's controller PD
1321  * list structure.  This information is mainly used to find out SYSTEM
1322  * supported by the FW.
1323  */
1324 int
1325 megasas_sync_map_info(struct megasas_instance *instance)
1326 {
1327         int i;
1328         struct megasas_cmd *cmd;
1329         struct megasas_dcmd_frame *dcmd;
1330         u16 num_lds;
1331         struct fusion_context *fusion;
1332         struct MR_LD_TARGET_SYNC *ci = NULL;
1333         struct MR_DRV_RAID_MAP_ALL *map;
1334         struct MR_LD_RAID  *raid;
1335         struct MR_LD_TARGET_SYNC *ld_sync;
1336         dma_addr_t ci_h = 0;
1337         u32 size_map_info;
1338
1339         cmd = megasas_get_cmd(instance);
1340
1341         if (!cmd) {
1342                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1343                 return -ENOMEM;
1344         }
1345
1346         fusion = instance->ctrl_context;
1347
1348         if (!fusion) {
1349                 megasas_return_cmd(instance, cmd);
1350                 return 1;
1351         }
1352
1353         map = fusion->ld_drv_map[instance->map_id & 1];
1354
1355         num_lds = le16_to_cpu(map->raidMap.ldCount);
1356
1357         dcmd = &cmd->frame->dcmd;
1358
1359         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1360
1361         ci = (struct MR_LD_TARGET_SYNC *)
1362           fusion->ld_map[(instance->map_id - 1) & 1];
1363         memset(ci, 0, fusion->max_map_sz);
1364
1365         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1366
1367         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1368
1369         for (i = 0; i < num_lds; i++, ld_sync++) {
1370                 raid = MR_LdRaidGet(i, map);
1371                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1372                 ld_sync->seqNum = raid->seqNum;
1373         }
1374
1375         size_map_info = fusion->current_map_sz;
1376
1377         dcmd->cmd = MFI_CMD_DCMD;
1378         dcmd->cmd_status = 0xFF;
1379         dcmd->sge_count = 1;
1380         dcmd->flags = MFI_FRAME_DIR_WRITE;
1381         dcmd->timeout = 0;
1382         dcmd->pad_0 = 0;
1383         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1384         dcmd->mbox.b[0] = num_lds;
1385         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1386         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1387
1388         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1389
1390         instance->map_update_cmd = cmd;
1391
1392         instance->instancet->issue_dcmd(instance, cmd);
1393
1394         return 0;
1395 }
1396
1397 /*
1398  * meagasas_display_intel_branding - Display branding string
1399  * @instance: per adapter object
1400  *
1401  * Return nothing.
1402  */
1403 static void
1404 megasas_display_intel_branding(struct megasas_instance *instance)
1405 {
1406         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1407                 return;
1408
1409         switch (instance->pdev->device) {
1410         case PCI_DEVICE_ID_LSI_INVADER:
1411                 switch (instance->pdev->subsystem_device) {
1412                 case MEGARAID_INTEL_RS3DC080_SSDID:
1413                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1414                                 instance->host->host_no,
1415                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1416                         break;
1417                 case MEGARAID_INTEL_RS3DC040_SSDID:
1418                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1419                                 instance->host->host_no,
1420                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1421                         break;
1422                 case MEGARAID_INTEL_RS3SC008_SSDID:
1423                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1424                                 instance->host->host_no,
1425                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1426                         break;
1427                 case MEGARAID_INTEL_RS3MC044_SSDID:
1428                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1429                                 instance->host->host_no,
1430                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1431                         break;
1432                 default:
1433                         break;
1434                 }
1435                 break;
1436         case PCI_DEVICE_ID_LSI_FURY:
1437                 switch (instance->pdev->subsystem_device) {
1438                 case MEGARAID_INTEL_RS3WC080_SSDID:
1439                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1440                                 instance->host->host_no,
1441                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1442                         break;
1443                 case MEGARAID_INTEL_RS3WC040_SSDID:
1444                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1445                                 instance->host->host_no,
1446                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1447                         break;
1448                 default:
1449                         break;
1450                 }
1451                 break;
1452         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1453         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1454                 switch (instance->pdev->subsystem_device) {
1455                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1456                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1457                                 instance->host->host_no,
1458                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1459                         break;
1460                 default:
1461                         break;
1462                 }
1463                 break;
1464         default:
1465                 break;
1466         }
1467 }
1468
1469 /**
1470  * megasas_allocate_raid_maps - Allocate memory for RAID maps
1471  * @instance:                           Adapter soft state
1472  *
1473  * return:                              if success: return 0
1474  *                                      failed:  return -ENOMEM
1475  */
1476 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1477 {
1478         struct fusion_context *fusion;
1479         int i = 0;
1480
1481         fusion = instance->ctrl_context;
1482
1483         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1484
1485         for (i = 0; i < 2; i++) {
1486                 fusion->ld_map[i] = NULL;
1487
1488                 fusion->ld_drv_map[i] = (void *)
1489                         __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1490                                          fusion->drv_map_pages);
1491
1492                 if (!fusion->ld_drv_map[i]) {
1493                         fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1494
1495                         if (!fusion->ld_drv_map[i]) {
1496                                 dev_err(&instance->pdev->dev,
1497                                         "Could not allocate memory for local map"
1498                                         " size requested: %d\n",
1499                                         fusion->drv_map_sz);
1500                                 goto ld_drv_map_alloc_fail;
1501                         }
1502                 }
1503         }
1504
1505         for (i = 0; i < 2; i++) {
1506                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1507                                                        fusion->max_map_sz,
1508                                                        &fusion->ld_map_phys[i],
1509                                                        GFP_KERNEL);
1510                 if (!fusion->ld_map[i]) {
1511                         dev_err(&instance->pdev->dev,
1512                                 "Could not allocate memory for map info %s:%d\n",
1513                                 __func__, __LINE__);
1514                         goto ld_map_alloc_fail;
1515                 }
1516         }
1517
1518         return 0;
1519
1520 ld_map_alloc_fail:
1521         for (i = 0; i < 2; i++) {
1522                 if (fusion->ld_map[i])
1523                         dma_free_coherent(&instance->pdev->dev,
1524                                           fusion->max_map_sz,
1525                                           fusion->ld_map[i],
1526                                           fusion->ld_map_phys[i]);
1527         }
1528
1529 ld_drv_map_alloc_fail:
1530         for (i = 0; i < 2; i++) {
1531                 if (fusion->ld_drv_map[i]) {
1532                         if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1533                                 vfree(fusion->ld_drv_map[i]);
1534                         else
1535                                 free_pages((ulong)fusion->ld_drv_map[i],
1536                                            fusion->drv_map_pages);
1537                 }
1538         }
1539
1540         return -ENOMEM;
1541 }
1542
1543 /**
1544  * megasas_configure_queue_sizes -      Calculate size of request desc queue,
1545  *                                      reply desc queue,
1546  *                                      IO request frame queue, set can_queue.
1547  * @instance:                           Adapter soft state
1548  * @return:                             void
1549  */
1550 static inline
1551 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1552 {
1553         struct fusion_context *fusion;
1554         u16 max_cmd;
1555
1556         fusion = instance->ctrl_context;
1557         max_cmd = instance->max_fw_cmds;
1558
1559         if (instance->adapter_type >= VENTURA_SERIES)
1560                 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1561         else
1562                 instance->max_mpt_cmds = instance->max_fw_cmds;
1563
1564         instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1565         instance->cur_can_queue = instance->max_scsi_cmds;
1566         instance->host->can_queue = instance->cur_can_queue;
1567
1568         fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1569
1570         fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1571                                           instance->max_mpt_cmds;
1572         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1573                                         (fusion->reply_q_depth);
1574         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1575                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1576                  * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1577 }
1578
1579 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1580 {
1581         struct fusion_context *fusion;
1582         struct megasas_cmd *cmd;
1583
1584         fusion = instance->ctrl_context;
1585
1586         cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1587
1588         if (!cmd) {
1589                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1590                         __func__, __LINE__);
1591                 return -ENOMEM;
1592         }
1593
1594         cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1595                                         IOC_INIT_FRAME_SIZE,
1596                                         &cmd->frame_phys_addr, GFP_KERNEL);
1597
1598         if (!cmd->frame) {
1599                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1600                         __func__, __LINE__);
1601                 kfree(cmd);
1602                 return -ENOMEM;
1603         }
1604
1605         fusion->ioc_init_cmd = cmd;
1606         return 0;
1607 }
1608
1609 /**
1610  * megasas_free_ioc_init_cmd -  Free IOC INIT command frame
1611  * @instance:           Adapter soft state
1612  */
1613 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1614 {
1615         struct fusion_context *fusion;
1616
1617         fusion = instance->ctrl_context;
1618
1619         if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1620                 dma_free_coherent(&instance->pdev->dev,
1621                                   IOC_INIT_FRAME_SIZE,
1622                                   fusion->ioc_init_cmd->frame,
1623                                   fusion->ioc_init_cmd->frame_phys_addr);
1624
1625         kfree(fusion->ioc_init_cmd);
1626 }
1627
1628 /**
1629  * megasas_init_adapter_fusion -        Initializes the FW
1630  * @instance:           Adapter soft state
1631  *
1632  * This is the main function for initializing firmware.
1633  */
1634 u32
1635 megasas_init_adapter_fusion(struct megasas_instance *instance)
1636 {
1637         struct fusion_context *fusion;
1638         u32 scratch_pad_1;
1639         int i = 0, count;
1640
1641         fusion = instance->ctrl_context;
1642
1643         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1644
1645         /*
1646          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1647          */
1648         instance->max_mfi_cmds =
1649                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1650
1651         megasas_configure_queue_sizes(instance);
1652
1653         scratch_pad_1 = megasas_readl(instance,
1654                                       &instance->reg_set->outbound_scratch_pad_1);
1655         /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1656          * Firmware support extended IO chain frame which is 4 times more than
1657          * legacy Firmware.
1658          * Legacy Firmware - Frame size is (8 * 128) = 1K
1659          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1660          */
1661         if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1662                 instance->max_chain_frame_sz =
1663                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1664                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1665         else
1666                 instance->max_chain_frame_sz =
1667                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1668                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1669
1670         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1671                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1672                         instance->max_chain_frame_sz,
1673                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1674                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1675         }
1676
1677         fusion->max_sge_in_main_msg =
1678                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1679                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1680
1681         fusion->max_sge_in_chain =
1682                 instance->max_chain_frame_sz
1683                         / sizeof(union MPI2_SGE_IO_UNION);
1684
1685         instance->max_num_sge =
1686                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1687                         + fusion->max_sge_in_chain - 2);
1688
1689         /* Used for pass thru MFI frame (DCMD) */
1690         fusion->chain_offset_mfi_pthru =
1691                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1692
1693         fusion->chain_offset_io_request =
1694                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1695                  sizeof(union MPI2_SGE_IO_UNION))/16;
1696
1697         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1698         for (i = 0 ; i < count; i++)
1699                 fusion->last_reply_idx[i] = 0;
1700
1701         /*
1702          * For fusion adapters, 3 commands for IOCTL and 8 commands
1703          * for driver's internal DCMDs.
1704          */
1705         instance->max_scsi_cmds = instance->max_fw_cmds -
1706                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1707                                 MEGASAS_FUSION_IOCTL_CMDS);
1708         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1709
1710         if (megasas_alloc_ioc_init_frame(instance))
1711                 return 1;
1712
1713         /*
1714          * Allocate memory for descriptors
1715          * Create a pool of commands
1716          */
1717         if (megasas_alloc_cmds(instance))
1718                 goto fail_alloc_mfi_cmds;
1719         if (megasas_alloc_cmds_fusion(instance))
1720                 goto fail_alloc_cmds;
1721
1722         if (megasas_ioc_init_fusion(instance))
1723                 goto fail_ioc_init;
1724
1725         megasas_display_intel_branding(instance);
1726         if (megasas_get_ctrl_info(instance)) {
1727                 dev_err(&instance->pdev->dev,
1728                         "Could not get controller info. Fail from %s %d\n",
1729                         __func__, __LINE__);
1730                 goto fail_ioc_init;
1731         }
1732
1733         instance->flag_ieee = 1;
1734         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1735         fusion->fast_path_io = 0;
1736
1737         if (megasas_allocate_raid_maps(instance))
1738                 goto fail_ioc_init;
1739
1740         if (!megasas_get_map_info(instance))
1741                 megasas_sync_map_info(instance);
1742
1743         return 0;
1744
1745 fail_ioc_init:
1746         megasas_free_cmds_fusion(instance);
1747 fail_alloc_cmds:
1748         megasas_free_cmds(instance);
1749 fail_alloc_mfi_cmds:
1750         megasas_free_ioc_init_cmd(instance);
1751         return 1;
1752 }
1753
1754 /**
1755  * megasas_fault_detect_work    -       Worker function of
1756  *                                      FW fault handling workqueue.
1757  */
1758 static void
1759 megasas_fault_detect_work(struct work_struct *work)
1760 {
1761         struct megasas_instance *instance =
1762                 container_of(work, struct megasas_instance,
1763                              fw_fault_work.work);
1764         u32 fw_state, dma_state, status;
1765
1766         /* Check the fw state */
1767         fw_state = instance->instancet->read_fw_status_reg(instance) &
1768                         MFI_STATE_MASK;
1769
1770         if (fw_state == MFI_STATE_FAULT) {
1771                 dma_state = instance->instancet->read_fw_status_reg(instance) &
1772                                 MFI_STATE_DMADONE;
1773                 /* Start collecting crash, if DMA bit is done */
1774                 if (instance->crash_dump_drv_support &&
1775                     instance->crash_dump_app_support && dma_state) {
1776                         megasas_fusion_crash_dump(instance);
1777                 } else {
1778                         if (instance->unload == 0) {
1779                                 status = megasas_reset_fusion(instance->host, 0);
1780                                 if (status != SUCCESS) {
1781                                         dev_err(&instance->pdev->dev,
1782                                                 "Failed from %s %d, do not re-arm timer\n",
1783                                                 __func__, __LINE__);
1784                                         return;
1785                                 }
1786                         }
1787                 }
1788         }
1789
1790         if (instance->fw_fault_work_q)
1791                 queue_delayed_work(instance->fw_fault_work_q,
1792                         &instance->fw_fault_work,
1793                         msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1794 }
1795
1796 int
1797 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1798 {
1799         /* Check if the Fault WQ is already started */
1800         if (instance->fw_fault_work_q)
1801                 return SUCCESS;
1802
1803         INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1804
1805         snprintf(instance->fault_handler_work_q_name,
1806                  sizeof(instance->fault_handler_work_q_name),
1807                  "poll_megasas%d_status", instance->host->host_no);
1808
1809         instance->fw_fault_work_q =
1810                 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1811         if (!instance->fw_fault_work_q) {
1812                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1813                         __func__, __LINE__);
1814                 return FAILED;
1815         }
1816
1817         queue_delayed_work(instance->fw_fault_work_q,
1818                            &instance->fw_fault_work,
1819                            msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1820
1821         return SUCCESS;
1822 }
1823
1824 void
1825 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
1826 {
1827         struct workqueue_struct *wq;
1828
1829         if (instance->fw_fault_work_q) {
1830                 wq = instance->fw_fault_work_q;
1831                 instance->fw_fault_work_q = NULL;
1832                 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
1833                         flush_workqueue(wq);
1834                 destroy_workqueue(wq);
1835         }
1836 }
1837
1838 /**
1839  * map_cmd_status -     Maps FW cmd status to OS cmd status
1840  * @cmd :               Pointer to cmd
1841  * @status :            status of cmd returned by FW
1842  * @ext_status :        ext status of cmd returned by FW
1843  */
1844
1845 void
1846 map_cmd_status(struct fusion_context *fusion,
1847                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1848                 u32 data_length, u8 *sense)
1849 {
1850         u8 cmd_type;
1851         int resid;
1852
1853         cmd_type = megasas_cmd_type(scmd);
1854         switch (status) {
1855
1856         case MFI_STAT_OK:
1857                 scmd->result = DID_OK << 16;
1858                 break;
1859
1860         case MFI_STAT_SCSI_IO_FAILED:
1861         case MFI_STAT_LD_INIT_IN_PROGRESS:
1862                 scmd->result = (DID_ERROR << 16) | ext_status;
1863                 break;
1864
1865         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1866
1867                 scmd->result = (DID_OK << 16) | ext_status;
1868                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1869                         memset(scmd->sense_buffer, 0,
1870                                SCSI_SENSE_BUFFERSIZE);
1871                         memcpy(scmd->sense_buffer, sense,
1872                                SCSI_SENSE_BUFFERSIZE);
1873                         scmd->result |= DRIVER_SENSE << 24;
1874                 }
1875
1876                 /*
1877                  * If the  IO request is partially completed, then MR FW will
1878                  * update "io_request->DataLength" field with actual number of
1879                  * bytes transferred.Driver will set residual bytes count in
1880                  * SCSI command structure.
1881                  */
1882                 resid = (scsi_bufflen(scmd) - data_length);
1883                 scsi_set_resid(scmd, resid);
1884
1885                 if (resid &&
1886                         ((cmd_type == READ_WRITE_LDIO) ||
1887                         (cmd_type == READ_WRITE_SYSPDIO)))
1888                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
1889                                 " requested/completed 0x%x/0x%x\n",
1890                                 status, scsi_bufflen(scmd), data_length);
1891                 break;
1892
1893         case MFI_STAT_LD_OFFLINE:
1894         case MFI_STAT_DEVICE_NOT_FOUND:
1895                 scmd->result = DID_BAD_TARGET << 16;
1896                 break;
1897         case MFI_STAT_CONFIG_SEQ_MISMATCH:
1898                 scmd->result = DID_IMM_RETRY << 16;
1899                 break;
1900         default:
1901                 scmd->result = DID_ERROR << 16;
1902                 break;
1903         }
1904 }
1905
1906 /**
1907  * megasas_is_prp_possible -
1908  * Checks if native NVMe PRPs can be built for the IO
1909  *
1910  * @instance:           Adapter soft state
1911  * @scmd:               SCSI command from the mid-layer
1912  * @sge_count:          scatter gather element count.
1913  *
1914  * Returns:             true: PRPs can be built
1915  *                      false: IEEE SGLs needs to be built
1916  */
1917 static bool
1918 megasas_is_prp_possible(struct megasas_instance *instance,
1919                         struct scsi_cmnd *scmd, int sge_count)
1920 {
1921         int i;
1922         u32 data_length = 0;
1923         struct scatterlist *sg_scmd;
1924         bool build_prp = false;
1925         u32 mr_nvme_pg_size;
1926
1927         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1928                                 MR_DEFAULT_NVME_PAGE_SIZE);
1929         data_length = scsi_bufflen(scmd);
1930         sg_scmd = scsi_sglist(scmd);
1931
1932         /*
1933          * NVMe uses one PRP for each page (or part of a page)
1934          * look at the data length - if 4 pages or less then IEEE is OK
1935          * if  > 5 pages then we need to build a native SGL
1936          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
1937          * if this first size in the page is >= the residual beyond 4 pages
1938          * then use IEEE, otherwise use native SGL
1939          */
1940
1941         if (data_length > (mr_nvme_pg_size * 5)) {
1942                 build_prp = true;
1943         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
1944                         (data_length <= (mr_nvme_pg_size * 5)))  {
1945                 /* check if 1st SG entry size is < residual beyond 4 pages */
1946                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
1947                         build_prp = true;
1948         }
1949
1950 /*
1951  * Below code detects gaps/holes in IO data buffers.
1952  * What does holes/gaps mean?
1953  * Any SGE except first one in a SGL starts at non NVME page size
1954  * aligned address OR Any SGE except last one in a SGL ends at
1955  * non NVME page size boundary.
1956  *
1957  * Driver has already informed block layer by setting boundary rules for
1958  * bio merging done at NVME page size boundary calling kernel API
1959  * blk_queue_virt_boundary inside slave_config.
1960  * Still there is possibility of IO coming with holes to driver because of
1961  * IO merging done by IO scheduler.
1962  *
1963  * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
1964  * IO scheduling so no IO merging.
1965  *
1966  * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
1967  * then sending IOs with holes.
1968  *
1969  * Though driver can request block layer to disable IO merging by calling-
1970  * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
1971  * user may tune sysfs parameter- nomerges again to 0 or 1.
1972  *
1973  * If in future IO scheduling is enabled with SCSI BLK MQ,
1974  * this algorithm to detect holes will be required in driver
1975  * for SCSI BLK MQ enabled case as well.
1976  *
1977  *
1978  */
1979         scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
1980                 if ((i != 0) && (i != (sge_count - 1))) {
1981                         if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
1982                             mega_mod64(sg_dma_address(sg_scmd),
1983                                        mr_nvme_pg_size)) {
1984                                 build_prp = false;
1985                                 atomic_inc(&instance->sge_holes_type1);
1986                                 break;
1987                         }
1988                 }
1989
1990                 if ((sge_count > 1) && (i == 0)) {
1991                         if ((mega_mod64((sg_dma_address(sg_scmd) +
1992                                         sg_dma_len(sg_scmd)),
1993                                         mr_nvme_pg_size))) {
1994                                 build_prp = false;
1995                                 atomic_inc(&instance->sge_holes_type2);
1996                                 break;
1997                         }
1998                 }
1999
2000                 if ((sge_count > 1) && (i == (sge_count - 1))) {
2001                         if (mega_mod64(sg_dma_address(sg_scmd),
2002                                        mr_nvme_pg_size)) {
2003                                 build_prp = false;
2004                                 atomic_inc(&instance->sge_holes_type3);
2005                                 break;
2006                         }
2007                 }
2008         }
2009
2010         return build_prp;
2011 }
2012
2013 /**
2014  * megasas_make_prp_nvme -
2015  * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
2016  *
2017  * @instance:           Adapter soft state
2018  * @scmd:               SCSI command from the mid-layer
2019  * @sgl_ptr:            SGL to be filled in
2020  * @cmd:                Fusion command frame
2021  * @sge_count:          scatter gather element count.
2022  *
2023  * Returns:             true: PRPs are built
2024  *                      false: IEEE SGLs needs to be built
2025  */
2026 static bool
2027 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
2028                       struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2029                       struct megasas_cmd_fusion *cmd, int sge_count)
2030 {
2031         int sge_len, offset, num_prp_in_chain = 0;
2032         struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
2033         u64 *ptr_sgl;
2034         dma_addr_t ptr_sgl_phys;
2035         u64 sge_addr;
2036         u32 page_mask, page_mask_result;
2037         struct scatterlist *sg_scmd;
2038         u32 first_prp_len;
2039         bool build_prp = false;
2040         int data_len = scsi_bufflen(scmd);
2041         u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2042                                         MR_DEFAULT_NVME_PAGE_SIZE);
2043
2044         build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
2045
2046         if (!build_prp)
2047                 return false;
2048
2049         /*
2050          * Nvme has a very convoluted prp format.  One prp is required
2051          * for each page or partial page. Driver need to split up OS sg_list
2052          * entries if it is longer than one page or cross a page
2053          * boundary.  Driver also have to insert a PRP list pointer entry as
2054          * the last entry in each physical page of the PRP list.
2055          *
2056          * NOTE: The first PRP "entry" is actually placed in the first
2057          * SGL entry in the main message as IEEE 64 format.  The 2nd
2058          * entry in the main message is the chain element, and the rest
2059          * of the PRP entries are built in the contiguous pcie buffer.
2060          */
2061         page_mask = mr_nvme_pg_size - 1;
2062         ptr_sgl = (u64 *)cmd->sg_frame;
2063         ptr_sgl_phys = cmd->sg_frame_phys_addr;
2064         memset(ptr_sgl, 0, instance->max_chain_frame_sz);
2065
2066         /* Build chain frame element which holds all prps except first*/
2067         main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
2068             ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
2069
2070         main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2071         main_chain_element->NextChainOffset = 0;
2072         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2073                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
2074                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2075
2076         /* Build first prp, sge need not to be page aligned*/
2077         ptr_first_sgl = sgl_ptr;
2078         sg_scmd = scsi_sglist(scmd);
2079         sge_addr = sg_dma_address(sg_scmd);
2080         sge_len = sg_dma_len(sg_scmd);
2081
2082         offset = (u32)(sge_addr & page_mask);
2083         first_prp_len = mr_nvme_pg_size - offset;
2084
2085         ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2086         ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2087
2088         data_len -= first_prp_len;
2089
2090         if (sge_len > first_prp_len) {
2091                 sge_addr += first_prp_len;
2092                 sge_len -= first_prp_len;
2093         } else if (sge_len == first_prp_len) {
2094                 sg_scmd = sg_next(sg_scmd);
2095                 sge_addr = sg_dma_address(sg_scmd);
2096                 sge_len = sg_dma_len(sg_scmd);
2097         }
2098
2099         for (;;) {
2100                 offset = (u32)(sge_addr & page_mask);
2101
2102                 /* Put PRP pointer due to page boundary*/
2103                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2104                 if (unlikely(!page_mask_result)) {
2105                         scmd_printk(KERN_NOTICE,
2106                                     scmd, "page boundary ptr_sgl: 0x%p\n",
2107                                     ptr_sgl);
2108                         ptr_sgl_phys += 8;
2109                         *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2110                         ptr_sgl++;
2111                         num_prp_in_chain++;
2112                 }
2113
2114                 *ptr_sgl = cpu_to_le64(sge_addr);
2115                 ptr_sgl++;
2116                 ptr_sgl_phys += 8;
2117                 num_prp_in_chain++;
2118
2119                 sge_addr += mr_nvme_pg_size;
2120                 sge_len -= mr_nvme_pg_size;
2121                 data_len -= mr_nvme_pg_size;
2122
2123                 if (data_len <= 0)
2124                         break;
2125
2126                 if (sge_len > 0)
2127                         continue;
2128
2129                 sg_scmd = sg_next(sg_scmd);
2130                 sge_addr = sg_dma_address(sg_scmd);
2131                 sge_len = sg_dma_len(sg_scmd);
2132         }
2133
2134         main_chain_element->Length =
2135                         cpu_to_le32(num_prp_in_chain * sizeof(u64));
2136
2137         atomic_inc(&instance->prp_sgl);
2138         return build_prp;
2139 }
2140
2141 /**
2142  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
2143  * @instance:           Adapter soft state
2144  * @scp:                SCSI command from the mid-layer
2145  * @sgl_ptr:            SGL to be filled in
2146  * @cmd:                cmd we are working on
2147  * @sge_count           sge count
2148  *
2149  */
2150 static void
2151 megasas_make_sgl_fusion(struct megasas_instance *instance,
2152                         struct scsi_cmnd *scp,
2153                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2154                         struct megasas_cmd_fusion *cmd, int sge_count)
2155 {
2156         int i, sg_processed;
2157         struct scatterlist *os_sgl;
2158         struct fusion_context *fusion;
2159
2160         fusion = instance->ctrl_context;
2161
2162         if (instance->adapter_type >= INVADER_SERIES) {
2163                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2164                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2165                 sgl_ptr_end->Flags = 0;
2166         }
2167
2168         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2169                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2170                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2171                 sgl_ptr->Flags = 0;
2172                 if (instance->adapter_type >= INVADER_SERIES)
2173                         if (i == sge_count - 1)
2174                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2175                 sgl_ptr++;
2176                 sg_processed = i + 1;
2177
2178                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
2179                     (sge_count > fusion->max_sge_in_main_msg)) {
2180
2181                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2182                         if (instance->adapter_type >= INVADER_SERIES) {
2183                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2184                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2185                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2186                                         cmd->io_request->ChainOffset =
2187                                                 fusion->
2188                                                 chain_offset_io_request;
2189                                 else
2190                                         cmd->io_request->ChainOffset = 0;
2191                         } else
2192                                 cmd->io_request->ChainOffset =
2193                                         fusion->chain_offset_io_request;
2194
2195                         sg_chain = sgl_ptr;
2196                         /* Prepare chain element */
2197                         sg_chain->NextChainOffset = 0;
2198                         if (instance->adapter_type >= INVADER_SERIES)
2199                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2200                         else
2201                                 sg_chain->Flags =
2202                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2203                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2204                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2205                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2206
2207                         sgl_ptr =
2208                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2209                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2210                 }
2211         }
2212         atomic_inc(&instance->ieee_sgl);
2213 }
2214
2215 /**
2216  * megasas_make_sgl -   Build Scatter Gather List(SGLs)
2217  * @scp:                SCSI command pointer
2218  * @instance:           Soft instance of controller
2219  * @cmd:                Fusion command pointer
2220  *
2221  * This function will build sgls based on device type.
2222  * For nvme drives, there is different way of building sgls in nvme native
2223  * format- PRPs(Physical Region Page).
2224  *
2225  * Returns the number of sg lists actually used, zero if the sg lists
2226  * is NULL, or -ENOMEM if the mapping failed
2227  */
2228 static
2229 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2230                      struct megasas_cmd_fusion *cmd)
2231 {
2232         int sge_count;
2233         bool build_prp = false;
2234         struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2235
2236         sge_count = scsi_dma_map(scp);
2237
2238         if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2239                 return sge_count;
2240
2241         sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2242         if ((le16_to_cpu(cmd->io_request->IoFlags) &
2243             MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2244             (cmd->pd_interface == NVME_PD))
2245                 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2246                                                   cmd, sge_count);
2247
2248         if (!build_prp)
2249                 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2250                                         cmd, sge_count);
2251
2252         return sge_count;
2253 }
2254
2255 /**
2256  * megasas_set_pd_lba - Sets PD LBA
2257  * @cdb:                CDB
2258  * @cdb_len:            cdb length
2259  * @start_blk:          Start block of IO
2260  *
2261  * Used to set the PD LBA in CDB for FP IOs
2262  */
2263 void
2264 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2265                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2266                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2267 {
2268         struct MR_LD_RAID *raid;
2269         u16 ld;
2270         u64 start_blk = io_info->pdBlock;
2271         u8 *cdb = io_request->CDB.CDB32;
2272         u32 num_blocks = io_info->numBlocks;
2273         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2274
2275         /* Check if T10 PI (DIF) is enabled for this LD */
2276         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2277         raid = MR_LdRaidGet(ld, local_map_ptr);
2278         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2279                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2280                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2281                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
2282
2283                 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2284                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2285                 else
2286                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2287                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2288
2289                 /* LBA */
2290                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2291                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2292                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2293                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2294                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2295                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2296                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2297                 cdb[19] = (u8)(start_blk & 0xff);
2298
2299                 /* Logical block reference tag */
2300                 io_request->CDB.EEDP32.PrimaryReferenceTag =
2301                         cpu_to_be32(ref_tag);
2302                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2303                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2304
2305                 /* Transfer length */
2306                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2307                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2308                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2309                 cdb[31] = (u8)(num_blocks & 0xff);
2310
2311                 /* set SCSI IO EEDPFlags */
2312                 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2313                         io_request->EEDPFlags = cpu_to_le16(
2314                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
2315                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2316                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2317                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2318                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2319                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2320                 } else {
2321                         io_request->EEDPFlags = cpu_to_le16(
2322                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2323                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2324                 }
2325                 io_request->Control |= cpu_to_le32((0x4 << 26));
2326                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2327         } else {
2328                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2329                 if (((cdb_len == 12) || (cdb_len == 16)) &&
2330                     (start_blk <= 0xffffffff)) {
2331                         if (cdb_len == 16) {
2332                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2333                                 flagvals = cdb[1];
2334                                 groupnum = cdb[14];
2335                                 control = cdb[15];
2336                         } else {
2337                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2338                                 flagvals = cdb[1];
2339                                 groupnum = cdb[10];
2340                                 control = cdb[11];
2341                         }
2342
2343                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2344
2345                         cdb[0] = opcode;
2346                         cdb[1] = flagvals;
2347                         cdb[6] = groupnum;
2348                         cdb[9] = control;
2349
2350                         /* Transfer length */
2351                         cdb[8] = (u8)(num_blocks & 0xff);
2352                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2353
2354                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2355                         cdb_len = 10;
2356                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2357                         /* Convert to 16 byte CDB for large LBA's */
2358                         switch (cdb_len) {
2359                         case 6:
2360                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2361                                 control = cdb[5];
2362                                 break;
2363                         case 10:
2364                                 opcode =
2365                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
2366                                 flagvals = cdb[1];
2367                                 groupnum = cdb[6];
2368                                 control = cdb[9];
2369                                 break;
2370                         case 12:
2371                                 opcode =
2372                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
2373                                 flagvals = cdb[1];
2374                                 groupnum = cdb[10];
2375                                 control = cdb[11];
2376                                 break;
2377                         }
2378
2379                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2380
2381                         cdb[0] = opcode;
2382                         cdb[1] = flagvals;
2383                         cdb[14] = groupnum;
2384                         cdb[15] = control;
2385
2386                         /* Transfer length */
2387                         cdb[13] = (u8)(num_blocks & 0xff);
2388                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2389                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2390                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2391
2392                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2393                         cdb_len = 16;
2394                 }
2395
2396                 /* Normal case, just load LBA here */
2397                 switch (cdb_len) {
2398                 case 6:
2399                 {
2400                         u8 val = cdb[1] & 0xE0;
2401                         cdb[3] = (u8)(start_blk & 0xff);
2402                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
2403                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2404                         break;
2405                 }
2406                 case 10:
2407                         cdb[5] = (u8)(start_blk & 0xff);
2408                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2409                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2410                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2411                         break;
2412                 case 12:
2413                         cdb[5]    = (u8)(start_blk & 0xff);
2414                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2415                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2416                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2417                         break;
2418                 case 16:
2419                         cdb[9]    = (u8)(start_blk & 0xff);
2420                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2421                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2422                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2423                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2424                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2425                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2426                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2427                         break;
2428                 }
2429         }
2430 }
2431
2432 /**
2433  * megasas_stream_detect -      stream detection on read and and write IOs
2434  * @instance:           Adapter soft state
2435  * @cmd:                    Command to be prepared
2436  * @io_info:            IO Request info
2437  *
2438  */
2439
2440 /** stream detection on read and and write IOs */
2441 static void megasas_stream_detect(struct megasas_instance *instance,
2442                                   struct megasas_cmd_fusion *cmd,
2443                                   struct IO_REQUEST_INFO *io_info)
2444 {
2445         struct fusion_context *fusion = instance->ctrl_context;
2446         u32 device_id = io_info->ldTgtId;
2447         struct LD_STREAM_DETECT *current_ld_sd
2448                 = fusion->stream_detect_by_ld[device_id];
2449         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2450         u32 shifted_values, unshifted_values;
2451         u32 index_value_mask, shifted_values_mask;
2452         int i;
2453         bool is_read_ahead = false;
2454         struct STREAM_DETECT *current_sd;
2455         /* find possible stream */
2456         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2457                 stream_num = (*track_stream >>
2458                         (i * BITS_PER_INDEX_STREAM)) &
2459                         STREAM_MASK;
2460                 current_sd = &current_ld_sd->stream_track[stream_num];
2461                 /* if we found a stream, update the raid
2462                  *  context and also update the mruBitMap
2463                  */
2464                 /*      boundary condition */
2465                 if ((current_sd->next_seq_lba) &&
2466                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2467                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2468                     (current_sd->is_read == io_info->isRead)) {
2469
2470                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2471                             ((!io_info->isRead) || (!is_read_ahead)))
2472                                 /*
2473                                  * Once the API availible we need to change this.
2474                                  * At this point we are not allowing any gap
2475                                  */
2476                                 continue;
2477
2478                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2479                         current_sd->next_seq_lba =
2480                         io_info->ldStartBlock + io_info->numBlocks;
2481                         /*
2482                          *      update the mruBitMap LRU
2483                          */
2484                         shifted_values_mask =
2485                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2486                         shifted_values = ((*track_stream & shifted_values_mask)
2487                                                 << BITS_PER_INDEX_STREAM);
2488                         index_value_mask =
2489                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2490                         unshifted_values =
2491                                 *track_stream & ~(shifted_values_mask |
2492                                 index_value_mask);
2493                         *track_stream =
2494                                 unshifted_values | shifted_values | stream_num;
2495                         return;
2496                 }
2497         }
2498         /*
2499          * if we did not find any stream, create a new one
2500          * from the least recently used
2501          */
2502         stream_num = (*track_stream >>
2503                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2504                 STREAM_MASK;
2505         current_sd = &current_ld_sd->stream_track[stream_num];
2506         current_sd->is_read = io_info->isRead;
2507         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2508         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2509         return;
2510 }
2511
2512 /**
2513  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2514  * affinity (cpu of the controller) and raid_flags in the raid context
2515  * based on IO type.
2516  *
2517  * @praid_context:      IO RAID context
2518  * @raid:               LD raid map
2519  * @fp_possible:        Is fast path possible?
2520  * @is_read:            Is read IO?
2521  *
2522  */
2523 static void
2524 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
2525                                   struct MR_LD_RAID *raid, bool fp_possible,
2526                                   u8 is_read, u32 scsi_buff_len)
2527 {
2528         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2529         struct RAID_CONTEXT_G35 *rctx_g35;
2530
2531         rctx_g35 = &praid_context->raid_context_g35;
2532         if (fp_possible) {
2533                 if (is_read) {
2534                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2535                             (raid->cpuAffinity.pdRead.cpu1))
2536                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2537                         else if (raid->cpuAffinity.pdRead.cpu1)
2538                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2539                 } else {
2540                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2541                             (raid->cpuAffinity.pdWrite.cpu1))
2542                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2543                         else if (raid->cpuAffinity.pdWrite.cpu1)
2544                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2545                         /* Fast path cache by pass capable R0/R1 VD */
2546                         if ((raid->level <= 1) &&
2547                             (raid->capability.fp_cache_bypass_capable)) {
2548                                 rctx_g35->routing_flags |=
2549                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2550                                 rctx_g35->raid_flags =
2551                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2552                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2553                         }
2554                 }
2555         } else {
2556                 if (is_read) {
2557                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2558                             (raid->cpuAffinity.ldRead.cpu1))
2559                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2560                         else if (raid->cpuAffinity.ldRead.cpu1)
2561                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2562                 } else {
2563                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2564                             (raid->cpuAffinity.ldWrite.cpu1))
2565                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2566                         else if (raid->cpuAffinity.ldWrite.cpu1)
2567                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2568
2569                         if (is_stream_detected(rctx_g35) &&
2570                             ((raid->level == 5) || (raid->level == 6)) &&
2571                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2572                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2573                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2574                 }
2575         }
2576
2577         rctx_g35->routing_flags |=
2578                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2579
2580         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2581          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2582          * IO Subtype is not bitmap.
2583          */
2584         if ((raid->level == 1) && (!is_read)) {
2585                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2586                         praid_context->raid_context_g35.raid_flags =
2587                                 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2588                                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2589         }
2590 }
2591
2592 /**
2593  * megasas_build_ldio_fusion -  Prepares IOs to devices
2594  * @instance:           Adapter soft state
2595  * @scp:                SCSI command
2596  * @cmd:                Command to be prepared
2597  *
2598  * Prepares the io_request and chain elements (sg_frame) for IO
2599  * The IO can be for PD (Fast Path) or LD
2600  */
2601 void
2602 megasas_build_ldio_fusion(struct megasas_instance *instance,
2603                           struct scsi_cmnd *scp,
2604                           struct megasas_cmd_fusion *cmd)
2605 {
2606         bool fp_possible;
2607         u16 ld;
2608         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2609         u32 scsi_buff_len;
2610         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2611         struct IO_REQUEST_INFO io_info;
2612         struct fusion_context *fusion;
2613         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2614         u8 *raidLUN;
2615         unsigned long spinlock_flags;
2616         struct MR_LD_RAID *raid = NULL;
2617         struct MR_PRIV_DEVICE *mrdev_priv;
2618         struct RAID_CONTEXT *rctx;
2619         struct RAID_CONTEXT_G35 *rctx_g35;
2620
2621         device_id = MEGASAS_DEV_INDEX(scp);
2622
2623         fusion = instance->ctrl_context;
2624
2625         io_request = cmd->io_request;
2626         rctx = &io_request->RaidContext.raid_context;
2627         rctx_g35 = &io_request->RaidContext.raid_context_g35;
2628
2629         rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2630         rctx->status = 0;
2631         rctx->ex_status = 0;
2632
2633         start_lba_lo = 0;
2634         start_lba_hi = 0;
2635         fp_possible = false;
2636
2637         /*
2638          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2639          */
2640         if (scp->cmd_len == 6) {
2641                 datalength = (u32) scp->cmnd[4];
2642                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2643                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2644
2645                 start_lba_lo &= 0x1FFFFF;
2646         }
2647
2648         /*
2649          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2650          */
2651         else if (scp->cmd_len == 10) {
2652                 datalength = (u32) scp->cmnd[8] |
2653                         ((u32) scp->cmnd[7] << 8);
2654                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2655                         ((u32) scp->cmnd[3] << 16) |
2656                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2657         }
2658
2659         /*
2660          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2661          */
2662         else if (scp->cmd_len == 12) {
2663                 datalength = ((u32) scp->cmnd[6] << 24) |
2664                         ((u32) scp->cmnd[7] << 16) |
2665                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2666                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2667                         ((u32) scp->cmnd[3] << 16) |
2668                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2669         }
2670
2671         /*
2672          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2673          */
2674         else if (scp->cmd_len == 16) {
2675                 datalength = ((u32) scp->cmnd[10] << 24) |
2676                         ((u32) scp->cmnd[11] << 16) |
2677                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2678                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2679                         ((u32) scp->cmnd[7] << 16) |
2680                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2681
2682                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2683                         ((u32) scp->cmnd[3] << 16) |
2684                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2685         }
2686
2687         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2688         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2689         io_info.numBlocks = datalength;
2690         io_info.ldTgtId = device_id;
2691         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2692         scsi_buff_len = scsi_bufflen(scp);
2693         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2694
2695         if (scp->sc_data_direction == DMA_FROM_DEVICE)
2696                 io_info.isRead = 1;
2697
2698         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2699         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2700
2701         if (ld < instance->fw_supported_vd_count)
2702                 raid = MR_LdRaidGet(ld, local_map_ptr);
2703
2704         if (!raid || (!fusion->fast_path_io)) {
2705                 rctx->reg_lock_flags  = 0;
2706                 fp_possible = false;
2707         } else {
2708                 if (MR_BuildRaidContext(instance, &io_info, rctx,
2709                                         local_map_ptr, &raidLUN))
2710                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2711         }
2712
2713         cmd->request_desc->SCSIIO.MSIxIndex =
2714                 instance->reply_map[raw_smp_processor_id()];
2715
2716         if (instance->adapter_type >= VENTURA_SERIES) {
2717                 /* FP for Optimal raid level 1.
2718                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2719                  * are built by the driver as LD I/Os.
2720                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2721                  * (there is never a reason to process these as buffered writes)
2722                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2723                  * with the SLD bit asserted.
2724                  */
2725                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2726                         mrdev_priv = scp->device->hostdata;
2727
2728                         if (atomic_inc_return(&instance->fw_outstanding) >
2729                                 (instance->host->can_queue)) {
2730                                 fp_possible = false;
2731                                 atomic_dec(&instance->fw_outstanding);
2732                         } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2733                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) {
2734                                 fp_possible = false;
2735                                 atomic_dec(&instance->fw_outstanding);
2736                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2737                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2738                                                    instance->r1_ldio_hint_default);
2739                         }
2740                 }
2741
2742                 if (!fp_possible ||
2743                     (io_info.isRead && io_info.ra_capable)) {
2744                         spin_lock_irqsave(&instance->stream_lock,
2745                                           spinlock_flags);
2746                         megasas_stream_detect(instance, cmd, &io_info);
2747                         spin_unlock_irqrestore(&instance->stream_lock,
2748                                                spinlock_flags);
2749                         /* In ventura if stream detected for a read and it is
2750                          * read ahead capable make this IO as LDIO
2751                          */
2752                         if (is_stream_detected(rctx_g35))
2753                                 fp_possible = false;
2754                 }
2755
2756                 /* If raid is NULL, set CPU affinity to default CPU0 */
2757                 if (raid)
2758                         megasas_set_raidflag_cpu_affinity(&io_request->RaidContext,
2759                                 raid, fp_possible, io_info.isRead,
2760                                 scsi_buff_len);
2761                 else
2762                         rctx_g35->routing_flags |=
2763                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2764         }
2765
2766         if (fp_possible) {
2767                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2768                                    local_map_ptr, start_lba_lo);
2769                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2770                 cmd->request_desc->SCSIIO.RequestFlags =
2771                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2772                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2773                 if (instance->adapter_type == INVADER_SERIES) {
2774                         if (rctx->reg_lock_flags == REGION_TYPE_UNUSED)
2775                                 cmd->request_desc->SCSIIO.RequestFlags =
2776                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2777                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2778                         rctx->type = MPI2_TYPE_CUDA;
2779                         rctx->nseg = 0x1;
2780                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2781                         rctx->reg_lock_flags |=
2782                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2783                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2784                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2785                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2786                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2787                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2788                         io_request->IoFlags |=
2789                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2790                 }
2791                 if (fusion->load_balance_info &&
2792                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2793                         (io_info.isRead)) {
2794                         io_info.devHandle =
2795                                 get_updated_dev_handle(instance,
2796                                         &fusion->load_balance_info[device_id],
2797                                         &io_info, local_map_ptr);
2798                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2799                         cmd->pd_r1_lb = io_info.pd_after_lb;
2800                         if (instance->adapter_type >= VENTURA_SERIES)
2801                                 rctx_g35->span_arm = io_info.span_arm;
2802                         else
2803                                 rctx->span_arm = io_info.span_arm;
2804
2805                 } else
2806                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2807
2808                 if (instance->adapter_type >= VENTURA_SERIES)
2809                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2810                 else
2811                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2812
2813                 if ((raidLUN[0] == 1) &&
2814                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2815                         instance->dev_handle = !(instance->dev_handle);
2816                         io_info.devHandle =
2817                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2818                 }
2819
2820                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2821                 io_request->DevHandle = io_info.devHandle;
2822                 cmd->pd_interface = io_info.pd_interface;
2823                 /* populate the LUN field */
2824                 memcpy(io_request->LUN, raidLUN, 8);
2825         } else {
2826                 rctx->timeout_value =
2827                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2828                 cmd->request_desc->SCSIIO.RequestFlags =
2829                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2830                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2831                 if (instance->adapter_type == INVADER_SERIES) {
2832                         if (io_info.do_fp_rlbypass ||
2833                         (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2834                                 cmd->request_desc->SCSIIO.RequestFlags =
2835                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2836                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2837                         rctx->type = MPI2_TYPE_CUDA;
2838                         rctx->reg_lock_flags |=
2839                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2840                                         MR_RL_FLAGS_SEQ_NUM_ENABLE);
2841                         rctx->nseg = 0x1;
2842                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2843                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2844                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2845                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2846                 }
2847                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2848                 io_request->DevHandle = cpu_to_le16(device_id);
2849
2850         } /* Not FP */
2851 }
2852
2853 /**
2854  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2855  * @instance:           Adapter soft state
2856  * @scp:                SCSI command
2857  * @cmd:                Command to be prepared
2858  *
2859  * Prepares the io_request frame for non-rw io cmds for vd.
2860  */
2861 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2862                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2863 {
2864         u32 device_id;
2865         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2866         u16 ld;
2867         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2868         struct fusion_context *fusion = instance->ctrl_context;
2869         u8                          span, physArm;
2870         __le16                      devHandle;
2871         u32                         arRef, pd;
2872         struct MR_LD_RAID                  *raid;
2873         struct RAID_CONTEXT                *pRAID_Context;
2874         u8 fp_possible = 1;
2875
2876         io_request = cmd->io_request;
2877         device_id = MEGASAS_DEV_INDEX(scmd);
2878         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2879         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2880         /* get RAID_Context pointer */
2881         pRAID_Context = &io_request->RaidContext.raid_context;
2882         /* Check with FW team */
2883         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2884         pRAID_Context->reg_lock_row_lba    = 0;
2885         pRAID_Context->reg_lock_length    = 0;
2886
2887         if (fusion->fast_path_io && (
2888                 device_id < instance->fw_supported_vd_count)) {
2889
2890                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2891                 if (ld >= instance->fw_supported_vd_count - 1)
2892                         fp_possible = 0;
2893                 else {
2894                         raid = MR_LdRaidGet(ld, local_map_ptr);
2895                         if (!(raid->capability.fpNonRWCapable))
2896                                 fp_possible = 0;
2897                 }
2898         } else
2899                 fp_possible = 0;
2900
2901         if (!fp_possible) {
2902                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2903                 io_request->DevHandle = cpu_to_le16(device_id);
2904                 io_request->LUN[1] = scmd->device->lun;
2905                 pRAID_Context->timeout_value =
2906                         cpu_to_le16 (scmd->request->timeout / HZ);
2907                 cmd->request_desc->SCSIIO.RequestFlags =
2908                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2909                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2910         } else {
2911
2912                 /* set RAID context values */
2913                 pRAID_Context->config_seq_num = raid->seqNum;
2914                 if (instance->adapter_type < VENTURA_SERIES)
2915                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
2916                 pRAID_Context->timeout_value =
2917                         cpu_to_le16(raid->fpIoTimeoutForLd);
2918
2919                 /* get the DevHandle for the PD (since this is
2920                    fpNonRWCapable, this is a single disk RAID0) */
2921                 span = physArm = 0;
2922                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
2923                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
2924                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
2925
2926                 /* build request descriptor */
2927                 cmd->request_desc->SCSIIO.RequestFlags =
2928                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2929                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2930                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
2931
2932                 /* populate the LUN field */
2933                 memcpy(io_request->LUN, raid->LUN, 8);
2934
2935                 /* build the raidScsiIO structure */
2936                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2937                 io_request->DevHandle = devHandle;
2938         }
2939 }
2940
2941 /**
2942  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
2943  * @instance:           Adapter soft state
2944  * @scp:                SCSI command
2945  * @cmd:                Command to be prepared
2946  * @fp_possible:        parameter to detect fast path or firmware path io.
2947  *
2948  * Prepares the io_request frame for rw/non-rw io cmds for syspds
2949  */
2950 static void
2951 megasas_build_syspd_fusion(struct megasas_instance *instance,
2952         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
2953         bool fp_possible)
2954 {
2955         u32 device_id;
2956         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2957         u16 pd_index = 0;
2958         u16 os_timeout_value;
2959         u16 timeout_limit;
2960         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2961         struct RAID_CONTEXT     *pRAID_Context;
2962         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
2963         struct MR_PRIV_DEVICE *mr_device_priv_data;
2964         struct fusion_context *fusion = instance->ctrl_context;
2965         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
2966
2967         device_id = MEGASAS_DEV_INDEX(scmd);
2968         pd_index = MEGASAS_PD_INDEX(scmd);
2969         os_timeout_value = scmd->request->timeout / HZ;
2970         mr_device_priv_data = scmd->device->hostdata;
2971         cmd->pd_interface = mr_device_priv_data->interface_type;
2972
2973         io_request = cmd->io_request;
2974         /* get RAID_Context pointer */
2975         pRAID_Context = &io_request->RaidContext.raid_context;
2976         pRAID_Context->reg_lock_flags = 0;
2977         pRAID_Context->reg_lock_row_lba = 0;
2978         pRAID_Context->reg_lock_length = 0;
2979         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2980         io_request->LUN[1] = scmd->device->lun;
2981         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
2982                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
2983
2984         /* If FW supports PD sequence number */
2985         if (instance->use_seqnum_jbod_fp &&
2986                 instance->pd_list[pd_index].driveType == TYPE_DISK) {
2987                 /* TgtId must be incremented by 255 as jbod seq number is index
2988                  * below raid map
2989                  */
2990                  /* More than 256 PD/JBOD support for Ventura */
2991                 if (instance->support_morethan256jbod)
2992                         pRAID_Context->virtual_disk_tgt_id =
2993                                 pd_sync->seq[pd_index].pd_target_id;
2994                 else
2995                         pRAID_Context->virtual_disk_tgt_id =
2996                                 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
2997                 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum;
2998                 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
2999                 if (instance->adapter_type >= VENTURA_SERIES) {
3000                         io_request->RaidContext.raid_context_g35.routing_flags |=
3001                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3002                         io_request->RaidContext.raid_context_g35.nseg_type |=
3003                                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
3004                         io_request->RaidContext.raid_context_g35.nseg_type |=
3005                                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3006                 } else {
3007                         pRAID_Context->type = MPI2_TYPE_CUDA;
3008                         pRAID_Context->nseg = 0x1;
3009                         pRAID_Context->reg_lock_flags |=
3010                                 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3011                 }
3012         } else if (fusion->fast_path_io) {
3013                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3014                 pRAID_Context->config_seq_num = 0;
3015                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
3016                 io_request->DevHandle =
3017                         local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3018         } else {
3019                 /* Want to send all IO via FW path */
3020                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3021                 pRAID_Context->config_seq_num = 0;
3022                 io_request->DevHandle = cpu_to_le16(0xFFFF);
3023         }
3024
3025         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3026
3027         cmd->request_desc->SCSIIO.MSIxIndex =
3028                 instance->reply_map[raw_smp_processor_id()];
3029
3030         if (!fp_possible) {
3031                 /* system pd firmware path */
3032                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3033                 cmd->request_desc->SCSIIO.RequestFlags =
3034                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3035                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3036                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3037                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3038         } else {
3039                 if (os_timeout_value)
3040                         os_timeout_value++;
3041
3042                 /* system pd Fast Path */
3043                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3044                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3045                                 255 : 0xFFFF;
3046                 pRAID_Context->timeout_value =
3047                         cpu_to_le16((os_timeout_value > timeout_limit) ?
3048                         timeout_limit : os_timeout_value);
3049                 if (instance->adapter_type >= INVADER_SERIES)
3050                         io_request->IoFlags |=
3051                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3052
3053                 cmd->request_desc->SCSIIO.RequestFlags =
3054                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3055                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3056         }
3057 }
3058
3059 /**
3060  * megasas_build_io_fusion -    Prepares IOs to devices
3061  * @instance:           Adapter soft state
3062  * @scp:                SCSI command
3063  * @cmd:                Command to be prepared
3064  *
3065  * Invokes helper functions to prepare request frames
3066  * and sets flags appropriate for IO/Non-IO cmd
3067  */
3068 int
3069 megasas_build_io_fusion(struct megasas_instance *instance,
3070                         struct scsi_cmnd *scp,
3071                         struct megasas_cmd_fusion *cmd)
3072 {
3073         int sge_count;
3074         u8  cmd_type;
3075         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3076         struct MR_PRIV_DEVICE *mr_device_priv_data;
3077         mr_device_priv_data = scp->device->hostdata;
3078
3079         /* Zero out some fields so they don't get reused */
3080         memset(io_request->LUN, 0x0, 8);
3081         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3082         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3083         io_request->EEDPFlags = 0;
3084         io_request->Control = 0;
3085         io_request->EEDPBlockSize = 0;
3086         io_request->ChainOffset = 0;
3087         io_request->RaidContext.raid_context.raid_flags = 0;
3088         io_request->RaidContext.raid_context.type = 0;
3089         io_request->RaidContext.raid_context.nseg = 0;
3090
3091         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3092         /*
3093          * Just the CDB length,rest of the Flags are zero
3094          * This will be modified for FP in build_ldio_fusion
3095          */
3096         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3097
3098         switch (cmd_type = megasas_cmd_type(scp)) {
3099         case READ_WRITE_LDIO:
3100                 megasas_build_ldio_fusion(instance, scp, cmd);
3101                 break;
3102         case NON_READ_WRITE_LDIO:
3103                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3104                 break;
3105         case READ_WRITE_SYSPDIO:
3106                 megasas_build_syspd_fusion(instance, scp, cmd, true);
3107                 break;
3108         case NON_READ_WRITE_SYSPDIO:
3109                 if (instance->secure_jbod_support ||
3110                     mr_device_priv_data->is_tm_capable)
3111                         megasas_build_syspd_fusion(instance, scp, cmd, false);
3112                 else
3113                         megasas_build_syspd_fusion(instance, scp, cmd, true);
3114                 break;
3115         default:
3116                 break;
3117         }
3118
3119         /*
3120          * Construct SGL
3121          */
3122
3123         sge_count = megasas_make_sgl(instance, scp, cmd);
3124
3125         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3126                 dev_err(&instance->pdev->dev,
3127                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
3128                         __func__, __LINE__, sge_count, instance->max_num_sge);
3129                 return 1;
3130         }
3131
3132         if (instance->adapter_type >= VENTURA_SERIES) {
3133                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3134                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3135                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3136         } else {
3137                 /* numSGE store lower 8 bit of sge_count.
3138                  * numSGEExt store higher 8 bit of sge_count
3139                  */
3140                 io_request->RaidContext.raid_context.num_sge = sge_count;
3141                 io_request->RaidContext.raid_context.num_sge_ext =
3142                         (u8)(sge_count >> 8);
3143         }
3144
3145         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3146
3147         if (scp->sc_data_direction == DMA_TO_DEVICE)
3148                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3149         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3150                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3151
3152         io_request->SGLOffset0 =
3153                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3154
3155         io_request->SenseBufferLowAddress =
3156                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3157         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3158
3159         cmd->scmd = scp;
3160         scp->SCp.ptr = (char *)cmd;
3161
3162         return 0;
3163 }
3164
3165 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3166 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3167 {
3168         u8 *p;
3169         struct fusion_context *fusion;
3170
3171         fusion = instance->ctrl_context;
3172         p = fusion->req_frames_desc +
3173                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3174
3175         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3176 }
3177
3178
3179 /* megasas_prepate_secondRaid1_IO
3180  *  It prepares the raid 1 second IO
3181  */
3182 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3183                             struct megasas_cmd_fusion *cmd,
3184                             struct megasas_cmd_fusion *r1_cmd)
3185 {
3186         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3187         struct fusion_context *fusion;
3188         fusion = instance->ctrl_context;
3189         req_desc = cmd->request_desc;
3190         /* copy the io request frame as well as 8 SGEs data for r1 command*/
3191         memcpy(r1_cmd->io_request, cmd->io_request,
3192                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3193         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3194                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3195         /*sense buffer is different for r1 command*/
3196         r1_cmd->io_request->SenseBufferLowAddress =
3197                         cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3198         r1_cmd->scmd = cmd->scmd;
3199         req_desc2 = megasas_get_request_descriptor(instance,
3200                                                    (r1_cmd->index - 1));
3201         req_desc2->Words = 0;
3202         r1_cmd->request_desc = req_desc2;
3203         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3204         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3205         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3206         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3207         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3208         cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3209                         cpu_to_le16(r1_cmd->index);
3210         r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3211                         cpu_to_le16(cmd->index);
3212         /*MSIxIndex of both commands request descriptors should be same*/
3213         r1_cmd->request_desc->SCSIIO.MSIxIndex =
3214                         cmd->request_desc->SCSIIO.MSIxIndex;
3215         /*span arm is different for r1 cmd*/
3216         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3217                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3218 }
3219
3220 /**
3221  * megasas_build_and_issue_cmd_fusion -Main routine for building and
3222  *                                     issuing non IOCTL cmd
3223  * @instance:                   Adapter soft state
3224  * @scmd:                       pointer to scsi cmd from OS
3225  */
3226 static u32
3227 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3228                                    struct scsi_cmnd *scmd)
3229 {
3230         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3231         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3232         u32 index;
3233
3234         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3235                 instance->ldio_threshold &&
3236                 (atomic_inc_return(&instance->ldio_outstanding) >
3237                 instance->ldio_threshold)) {
3238                 atomic_dec(&instance->ldio_outstanding);
3239                 return SCSI_MLQUEUE_DEVICE_BUSY;
3240         }
3241
3242         if (atomic_inc_return(&instance->fw_outstanding) >
3243                         instance->host->can_queue) {
3244                 atomic_dec(&instance->fw_outstanding);
3245                 return SCSI_MLQUEUE_HOST_BUSY;
3246         }
3247
3248         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3249
3250         if (!cmd) {
3251                 atomic_dec(&instance->fw_outstanding);
3252                 return SCSI_MLQUEUE_HOST_BUSY;
3253         }
3254
3255         index = cmd->index;
3256
3257         req_desc = megasas_get_request_descriptor(instance, index-1);
3258
3259         req_desc->Words = 0;
3260         cmd->request_desc = req_desc;
3261
3262         if (megasas_build_io_fusion(instance, scmd, cmd)) {
3263                 megasas_return_cmd_fusion(instance, cmd);
3264                 dev_err(&instance->pdev->dev, "Error building command\n");
3265                 cmd->request_desc = NULL;
3266                 atomic_dec(&instance->fw_outstanding);
3267                 return SCSI_MLQUEUE_HOST_BUSY;
3268         }
3269
3270         req_desc = cmd->request_desc;
3271         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3272
3273         if (cmd->io_request->ChainOffset != 0 &&
3274             cmd->io_request->ChainOffset != 0xF)
3275                 dev_err(&instance->pdev->dev, "The chain offset value is not "
3276                        "correct : %x\n", cmd->io_request->ChainOffset);
3277         /*
3278          *      if it is raid 1/10 fp write capable.
3279          *      try to get second command from pool and construct it.
3280          *      From FW, it has confirmed that lba values of two PDs
3281          *      corresponds to single R1/10 LD are always same
3282          *
3283          */
3284         /*      driver side count always should be less than max_fw_cmds
3285          *      to get new command
3286          */
3287         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3288                 r1_cmd = megasas_get_cmd_fusion(instance,
3289                                 (scmd->request->tag + instance->max_fw_cmds));
3290                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3291         }
3292
3293
3294         /*
3295          * Issue the command to the FW
3296          */
3297
3298         megasas_fire_cmd_fusion(instance, req_desc);
3299
3300         if (r1_cmd)
3301                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3302
3303
3304         return 0;
3305 }
3306
3307 /**
3308  * megasas_complete_r1_command -
3309  * completes R1 FP write commands which has valid peer smid
3310  * @instance:                   Adapter soft state
3311  * @cmd_fusion:                 MPT command frame
3312  *
3313  */
3314 static inline void
3315 megasas_complete_r1_command(struct megasas_instance *instance,
3316                             struct megasas_cmd_fusion *cmd)
3317 {
3318         u8 *sense, status, ex_status;
3319         u32 data_length;
3320         u16 peer_smid;
3321         struct fusion_context *fusion;
3322         struct megasas_cmd_fusion *r1_cmd = NULL;
3323         struct scsi_cmnd *scmd_local = NULL;
3324         struct RAID_CONTEXT_G35 *rctx_g35;
3325
3326         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3327         fusion = instance->ctrl_context;
3328         peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid);
3329
3330         r1_cmd = fusion->cmd_list[peer_smid - 1];
3331         scmd_local = cmd->scmd;
3332         status = rctx_g35->status;
3333         ex_status = rctx_g35->ex_status;
3334         data_length = cmd->io_request->DataLength;
3335         sense = cmd->sense;
3336
3337         cmd->cmd_completed = true;
3338
3339         /* Check if peer command is completed or not*/
3340         if (r1_cmd->cmd_completed) {
3341                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3342                 if (rctx_g35->status != MFI_STAT_OK) {
3343                         status = rctx_g35->status;
3344                         ex_status = rctx_g35->ex_status;
3345                         data_length = r1_cmd->io_request->DataLength;
3346                         sense = r1_cmd->sense;
3347                 }
3348
3349                 megasas_return_cmd_fusion(instance, r1_cmd);
3350                 map_cmd_status(fusion, scmd_local, status, ex_status,
3351                                le32_to_cpu(data_length), sense);
3352                 if (instance->ldio_threshold &&
3353                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3354                         atomic_dec(&instance->ldio_outstanding);
3355                 scmd_local->SCp.ptr = NULL;
3356                 megasas_return_cmd_fusion(instance, cmd);
3357                 scsi_dma_unmap(scmd_local);
3358                 scmd_local->scsi_done(scmd_local);
3359         }
3360 }
3361
3362 /**
3363  * complete_cmd_fusion -        Completes command
3364  * @instance:                   Adapter soft state
3365  * Completes all commands that is in reply descriptor queue
3366  */
3367 int
3368 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
3369 {
3370         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3371         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3372         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3373         struct fusion_context *fusion;
3374         struct megasas_cmd *cmd_mfi;
3375         struct megasas_cmd_fusion *cmd_fusion;
3376         u16 smid, num_completed;
3377         u8 reply_descript_type, *sense, status, extStatus;
3378         u32 device_id, data_length;
3379         union desc_value d_val;
3380         struct LD_LOAD_BALANCE_INFO *lbinfo;
3381         int threshold_reply_count = 0;
3382         struct scsi_cmnd *scmd_local = NULL;
3383         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3384         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3385
3386         fusion = instance->ctrl_context;
3387
3388         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3389                 return IRQ_HANDLED;
3390
3391         desc = fusion->reply_frames_desc[MSIxIndex] +
3392                                 fusion->last_reply_idx[MSIxIndex];
3393
3394         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3395
3396         d_val.word = desc->Words;
3397
3398         reply_descript_type = reply_desc->ReplyFlags &
3399                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3400
3401         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3402                 return IRQ_NONE;
3403
3404         num_completed = 0;
3405
3406         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3407                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3408
3409                 smid = le16_to_cpu(reply_desc->SMID);
3410                 cmd_fusion = fusion->cmd_list[smid - 1];
3411                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3412                                                 cmd_fusion->io_request;
3413
3414                 scmd_local = cmd_fusion->scmd;
3415                 status = scsi_io_req->RaidContext.raid_context.status;
3416                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3417                 sense = cmd_fusion->sense;
3418                 data_length = scsi_io_req->DataLength;
3419
3420                 switch (scsi_io_req->Function) {
3421                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3422                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3423                                                 cmd_fusion->io_request;
3424                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3425                                                 &mr_tm_req->TmRequest;
3426                         dev_dbg(&instance->pdev->dev, "TM completion:"
3427                                 "type: 0x%x TaskMID: 0x%x\n",
3428                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3429                         complete(&cmd_fusion->done);
3430                         break;
3431                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3432                         /* Update load balancing info */
3433                         if (fusion->load_balance_info &&
3434                             (cmd_fusion->scmd->SCp.Status &
3435                             MEGASAS_LOAD_BALANCE_FLAG)) {
3436                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3437                                 lbinfo = &fusion->load_balance_info[device_id];
3438                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3439                                 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3440                         }
3441                         /* Fall through - and complete IO */
3442                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3443                         atomic_dec(&instance->fw_outstanding);
3444                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3445                                 map_cmd_status(fusion, scmd_local, status,
3446                                                extStatus, le32_to_cpu(data_length),
3447                                                sense);
3448                                 if (instance->ldio_threshold &&
3449                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3450                                         atomic_dec(&instance->ldio_outstanding);
3451                                 scmd_local->SCp.ptr = NULL;
3452                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3453                                 scsi_dma_unmap(scmd_local);
3454                                 scmd_local->scsi_done(scmd_local);
3455                         } else  /* Optimal VD - R1 FP command completion. */
3456                                 megasas_complete_r1_command(instance, cmd_fusion);
3457                         break;
3458                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3459                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3460                         /* Poll mode. Dummy free.
3461                          * In case of Interrupt mode, caller has reverse check.
3462                          */
3463                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3464                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3465                                 megasas_return_cmd(instance, cmd_mfi);
3466                         } else
3467                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3468                         break;
3469                 }
3470
3471                 fusion->last_reply_idx[MSIxIndex]++;
3472                 if (fusion->last_reply_idx[MSIxIndex] >=
3473                     fusion->reply_q_depth)
3474                         fusion->last_reply_idx[MSIxIndex] = 0;
3475
3476                 desc->Words = cpu_to_le64(ULLONG_MAX);
3477                 num_completed++;
3478                 threshold_reply_count++;
3479
3480                 /* Get the next reply descriptor */
3481                 if (!fusion->last_reply_idx[MSIxIndex])
3482                         desc = fusion->reply_frames_desc[MSIxIndex];
3483                 else
3484                         desc++;
3485
3486                 reply_desc =
3487                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3488
3489                 d_val.word = desc->Words;
3490
3491                 reply_descript_type = reply_desc->ReplyFlags &
3492                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3493
3494                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3495                         break;
3496                 /*
3497                  * Write to reply post host index register after completing threshold
3498                  * number of reply counts and still there are more replies in reply queue
3499                  * pending to be completed
3500                  */
3501                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
3502                         if (instance->msix_combined)
3503                                 writel(((MSIxIndex & 0x7) << 24) |
3504                                         fusion->last_reply_idx[MSIxIndex],
3505                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3506                         else
3507                                 writel((MSIxIndex << 24) |
3508                                         fusion->last_reply_idx[MSIxIndex],
3509                                         instance->reply_post_host_index_addr[0]);
3510                         threshold_reply_count = 0;
3511                 }
3512         }
3513
3514         if (!num_completed)
3515                 return IRQ_NONE;
3516
3517         wmb();
3518         if (instance->msix_combined)
3519                 writel(((MSIxIndex & 0x7) << 24) |
3520                         fusion->last_reply_idx[MSIxIndex],
3521                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3522         else
3523                 writel((MSIxIndex << 24) |
3524                         fusion->last_reply_idx[MSIxIndex],
3525                         instance->reply_post_host_index_addr[0]);
3526         megasas_check_and_restore_queue_depth(instance);
3527         return IRQ_HANDLED;
3528 }
3529
3530 /**
3531  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3532  * @instance:                   Adapter soft state
3533  */
3534 void megasas_sync_irqs(unsigned long instance_addr)
3535 {
3536         u32 count, i;
3537         struct megasas_instance *instance =
3538                 (struct megasas_instance *)instance_addr;
3539
3540         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3541
3542         for (i = 0; i < count; i++)
3543                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3544 }
3545
3546 /**
3547  * megasas_complete_cmd_dpc_fusion -    Completes command
3548  * @instance:                   Adapter soft state
3549  *
3550  * Tasklet to complete cmds
3551  */
3552 void
3553 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3554 {
3555         struct megasas_instance *instance =
3556                 (struct megasas_instance *)instance_addr;
3557         u32 count, MSIxIndex;
3558
3559         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3560
3561         /* If we have already declared adapter dead, donot complete cmds */
3562         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3563                 return;
3564
3565         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3566                 complete_cmd_fusion(instance, MSIxIndex);
3567 }
3568
3569 /**
3570  * megasas_isr_fusion - isr entry point
3571  */
3572 irqreturn_t megasas_isr_fusion(int irq, void *devp)
3573 {
3574         struct megasas_irq_context *irq_context = devp;
3575         struct megasas_instance *instance = irq_context->instance;
3576         u32 mfiStatus;
3577
3578         if (instance->mask_interrupts)
3579                 return IRQ_NONE;
3580
3581         if (!instance->msix_vectors) {
3582                 mfiStatus = instance->instancet->clear_intr(instance);
3583                 if (!mfiStatus)
3584                         return IRQ_NONE;
3585         }
3586
3587         /* If we are resetting, bail */
3588         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3589                 instance->instancet->clear_intr(instance);
3590                 return IRQ_HANDLED;
3591         }
3592
3593         return complete_cmd_fusion(instance, irq_context->MSIxIndex);
3594 }
3595
3596 /**
3597  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3598  * @instance:                   Adapter soft state
3599  * mfi_cmd:                     megasas_cmd pointer
3600  *
3601  */
3602 void
3603 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3604                         struct megasas_cmd *mfi_cmd)
3605 {
3606         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3607         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3608         struct megasas_cmd_fusion *cmd;
3609         struct fusion_context *fusion;
3610         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3611
3612         fusion = instance->ctrl_context;
3613
3614         cmd = megasas_get_cmd_fusion(instance,
3615                         instance->max_scsi_cmds + mfi_cmd->index);
3616
3617         /*  Save the smid. To be used for returning the cmd */
3618         mfi_cmd->context.smid = cmd->index;
3619
3620         /*
3621          * For cmds where the flag is set, store the flag and check
3622          * on completion. For cmds with this flag, don't call
3623          * megasas_complete_cmd
3624          */
3625
3626         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3627                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3628
3629         io_req = cmd->io_request;
3630
3631         if (instance->adapter_type >= INVADER_SERIES) {
3632                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3633                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3634                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3635                 sgl_ptr_end->Flags = 0;
3636         }
3637
3638         mpi25_ieee_chain =
3639           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3640
3641         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3642         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3643                                        SGL) / 4;
3644         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3645
3646         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3647
3648         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3649                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3650
3651         mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3652 }
3653
3654 /**
3655  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3656  * @instance:                   Adapter soft state
3657  * @cmd:                        mfi cmd to build
3658  *
3659  */
3660 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3661 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3662 {
3663         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3664         u16 index;
3665
3666         build_mpt_mfi_pass_thru(instance, cmd);
3667         index = cmd->context.smid;
3668
3669         req_desc = megasas_get_request_descriptor(instance, index - 1);
3670
3671         req_desc->Words = 0;
3672         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3673                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3674
3675         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3676
3677         return req_desc;
3678 }
3679
3680 /**
3681  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3682  * @instance:                   Adapter soft state
3683  * @cmd:                        mfi cmd pointer
3684  *
3685  */
3686 void
3687 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3688                           struct megasas_cmd *cmd)
3689 {
3690         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3691
3692         req_desc = build_mpt_cmd(instance, cmd);
3693
3694         megasas_fire_cmd_fusion(instance, req_desc);
3695         return;
3696 }
3697
3698 /**
3699  * megasas_release_fusion -     Reverses the FW initialization
3700  * @instance:                   Adapter soft state
3701  */
3702 void
3703 megasas_release_fusion(struct megasas_instance *instance)
3704 {
3705         megasas_free_ioc_init_cmd(instance);
3706         megasas_free_cmds(instance);
3707         megasas_free_cmds_fusion(instance);
3708
3709         iounmap(instance->reg_set);
3710
3711         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3712 }
3713
3714 /**
3715  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3716  * @regs:                       MFI register set
3717  */
3718 static u32
3719 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
3720 {
3721         return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
3722 }
3723
3724 /**
3725  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
3726  * @instance:                           Controller's soft instance
3727  * return:                              Number of allocated host crash buffers
3728  */
3729 static void
3730 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3731 {
3732         unsigned int i;
3733
3734         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3735                 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3736                 if (!instance->crash_buf[i]) {
3737                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3738                                 "memory allocation failed at index %d\n", i);
3739                         break;
3740                 }
3741         }
3742         instance->drv_buf_alloc = i;
3743 }
3744
3745 /**
3746  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
3747  * @instance:                           Controller's soft instance
3748  */
3749 void
3750 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3751 {
3752         unsigned int i;
3753         for (i = 0; i < instance->drv_buf_alloc; i++) {
3754                 if (instance->crash_buf[i])
3755                         vfree(instance->crash_buf[i]);
3756         }
3757         instance->drv_buf_index = 0;
3758         instance->drv_buf_alloc = 0;
3759         instance->fw_crash_state = UNAVAILABLE;
3760         instance->fw_crash_buffer_size = 0;
3761 }
3762
3763 /**
3764  * megasas_adp_reset_fusion -   For controller reset
3765  * @regs:                               MFI register set
3766  */
3767 static int
3768 megasas_adp_reset_fusion(struct megasas_instance *instance,
3769                          struct megasas_register_set __iomem *regs)
3770 {
3771         u32 host_diag, abs_state, retry;
3772
3773         /* Now try to reset the chip */
3774         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3775         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3776         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3777         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3778         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3779         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3780         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3781
3782         /* Check that the diag write enable (DRWE) bit is on */
3783         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
3784         retry = 0;
3785         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
3786                 msleep(100);
3787                 host_diag = megasas_readl(instance,
3788                                           &instance->reg_set->fusion_host_diag);
3789                 if (retry++ == 100) {
3790                         dev_warn(&instance->pdev->dev,
3791                                 "Host diag unlock failed from %s %d\n",
3792                                 __func__, __LINE__);
3793                         break;
3794                 }
3795         }
3796         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
3797                 return -1;
3798
3799         /* Send chip reset command */
3800         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
3801                 &instance->reg_set->fusion_host_diag);
3802         msleep(3000);
3803
3804         /* Make sure reset adapter bit is cleared */
3805         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
3806         retry = 0;
3807         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
3808                 msleep(100);
3809                 host_diag = megasas_readl(instance,
3810                                           &instance->reg_set->fusion_host_diag);
3811                 if (retry++ == 1000) {
3812                         dev_warn(&instance->pdev->dev,
3813                                 "Diag reset adapter never cleared %s %d\n",
3814                                 __func__, __LINE__);
3815                         break;
3816                 }
3817         }
3818         if (host_diag & HOST_DIAG_RESET_ADAPTER)
3819                 return -1;
3820
3821         abs_state = instance->instancet->read_fw_status_reg(instance)
3822                         & MFI_STATE_MASK;
3823         retry = 0;
3824
3825         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
3826                 msleep(100);
3827                 abs_state = instance->instancet->
3828                         read_fw_status_reg(instance) & MFI_STATE_MASK;
3829         }
3830         if (abs_state <= MFI_STATE_FW_INIT) {
3831                 dev_warn(&instance->pdev->dev,
3832                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
3833                         abs_state, __func__, __LINE__);
3834                 return -1;
3835         }
3836
3837         return 0;
3838 }
3839
3840 /**
3841  * megasas_check_reset_fusion - For controller reset check
3842  * @regs:                               MFI register set
3843  */
3844 static int
3845 megasas_check_reset_fusion(struct megasas_instance *instance,
3846                            struct megasas_register_set __iomem *regs)
3847 {
3848         return 0;
3849 }
3850
3851 /**
3852  * megasas_trigger_snap_dump -  Trigger snap dump in FW
3853  * @instance:                   Soft instance of adapter
3854  */
3855 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
3856 {
3857         int j;
3858         u32 fw_state;
3859
3860         if (!instance->disableOnlineCtrlReset) {
3861                 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
3862                 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
3863                        &instance->reg_set->doorbell);
3864                 readl(&instance->reg_set->doorbell);
3865         }
3866
3867         for (j = 0; j < instance->snapdump_wait_time; j++) {
3868                 fw_state = instance->instancet->read_fw_status_reg(instance) &
3869                                 MFI_STATE_MASK;
3870                 if (fw_state == MFI_STATE_FAULT) {
3871                         dev_err(&instance->pdev->dev,
3872                                 "Found FW in FAULT state, after snap dump trigger\n");
3873                         return;
3874                 }
3875                 msleep(1000);
3876         }
3877 }
3878
3879 /* This function waits for outstanding commands on fusion to complete */
3880 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
3881                                         int reason, int *convert)
3882 {
3883         int i, outstanding, retval = 0, hb_seconds_missed = 0;
3884         u32 fw_state;
3885         u32 waittime_for_io_completion;
3886
3887         waittime_for_io_completion =
3888                 min_t(u32, resetwaittime,
3889                         (resetwaittime - instance->snapdump_wait_time));
3890
3891         if (reason == MFI_IO_TIMEOUT_OCR) {
3892                 dev_info(&instance->pdev->dev,
3893                         "MFI command is timed out\n");
3894                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3895                 if (instance->snapdump_wait_time)
3896                         megasas_trigger_snap_dump(instance);
3897                 retval = 1;
3898                 goto out;
3899         }
3900
3901         for (i = 0; i < waittime_for_io_completion; i++) {
3902                 /* Check if firmware is in fault state */
3903                 fw_state = instance->instancet->read_fw_status_reg(instance) &
3904                                 MFI_STATE_MASK;
3905                 if (fw_state == MFI_STATE_FAULT) {
3906                         dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
3907                                " will reset adapter scsi%d.\n",
3908                                 instance->host->host_no);
3909                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3910                         if (instance->requestorId && reason) {
3911                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
3912                                 " state while polling during"
3913                                 " I/O timeout handling for %d\n",
3914                                 instance->host->host_no);
3915                                 *convert = 1;
3916                         }
3917
3918                         retval = 1;
3919                         goto out;
3920                 }
3921
3922
3923                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
3924                 if (instance->requestorId && !reason) {
3925                         retval = 1;
3926                         goto out;
3927                 }
3928
3929                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
3930                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
3931                         if (instance->hb_host_mem->HB.fwCounter !=
3932                             instance->hb_host_mem->HB.driverCounter) {
3933                                 instance->hb_host_mem->HB.driverCounter =
3934                                         instance->hb_host_mem->HB.fwCounter;
3935                                 hb_seconds_missed = 0;
3936                         } else {
3937                                 hb_seconds_missed++;
3938                                 if (hb_seconds_missed ==
3939                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
3940                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
3941                                                " Heartbeat never completed "
3942                                                " while polling during I/O "
3943                                                " timeout handling for "
3944                                                "scsi%d.\n",
3945                                                instance->host->host_no);
3946                                                *convert = 1;
3947                                                retval = 1;
3948                                                goto out;
3949                                 }
3950                         }
3951                 }
3952
3953                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3954                 outstanding = atomic_read(&instance->fw_outstanding);
3955                 if (!outstanding)
3956                         goto out;
3957
3958                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
3959                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
3960                                "commands to complete for scsi%d\n", i,
3961                                outstanding, instance->host->host_no);
3962                 }
3963                 msleep(1000);
3964         }
3965
3966         if (instance->snapdump_wait_time) {
3967                 megasas_trigger_snap_dump(instance);
3968                 retval = 1;
3969                 goto out;
3970         }
3971
3972         if (atomic_read(&instance->fw_outstanding)) {
3973                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
3974                        "will reset adapter scsi%d.\n",
3975                        instance->host->host_no);
3976                 *convert = 1;
3977                 retval = 1;
3978         }
3979
3980 out:
3981         return retval;
3982 }
3983
3984 void  megasas_reset_reply_desc(struct megasas_instance *instance)
3985 {
3986         int i, j, count;
3987         struct fusion_context *fusion;
3988         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
3989
3990         fusion = instance->ctrl_context;
3991         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3992         for (i = 0 ; i < count ; i++) {
3993                 fusion->last_reply_idx[i] = 0;
3994                 reply_desc = fusion->reply_frames_desc[i];
3995                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
3996                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
3997         }
3998 }
3999
4000 /*
4001  * megasas_refire_mgmt_cmd :    Re-fire management commands
4002  * @instance:                           Controller's soft instance
4003 */
4004 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
4005 {
4006         int j;
4007         struct megasas_cmd_fusion *cmd_fusion;
4008         struct fusion_context *fusion;
4009         struct megasas_cmd *cmd_mfi;
4010         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4011         u16 smid;
4012         bool refire_cmd = 0;
4013         u8 result;
4014         u32 opcode = 0;
4015
4016         fusion = instance->ctrl_context;
4017
4018         /* Re-fire management commands.
4019          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4020          */
4021         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4022                 cmd_fusion = fusion->cmd_list[j];
4023                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4024                 smid = le16_to_cpu(cmd_mfi->context.smid);
4025                 result = REFIRE_CMD;
4026
4027                 if (!smid)
4028                         continue;
4029
4030                 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4031
4032                 switch (cmd_mfi->frame->hdr.cmd) {
4033                 case MFI_CMD_DCMD:
4034                         opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4035                          /* Do not refire shutdown command */
4036                         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4037                                 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4038                                 result = COMPLETE_CMD;
4039                                 break;
4040                         }
4041
4042                         refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4043                                       (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4044                                       !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4045
4046                         if (!refire_cmd)
4047                                 result = RETURN_CMD;
4048
4049                         break;
4050                 case MFI_CMD_NVME:
4051                         if (!instance->support_nvme_passthru) {
4052                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4053                                 result = COMPLETE_CMD;
4054                         }
4055
4056                         break;
4057                 default:
4058                         break;
4059                 }
4060
4061                 switch (result) {
4062                 case REFIRE_CMD:
4063                         megasas_fire_cmd_fusion(instance, req_desc);
4064                         break;
4065                 case RETURN_CMD:
4066                         megasas_return_cmd(instance, cmd_mfi);
4067                         break;
4068                 case COMPLETE_CMD:
4069                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4070                         break;
4071                 }
4072         }
4073 }
4074
4075 /*
4076  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4077  * @instance: per adapter struct
4078  * @channel: the channel assigned by the OS
4079  * @id: the id assigned by the OS
4080  *
4081  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4082  */
4083
4084 static int megasas_track_scsiio(struct megasas_instance *instance,
4085                 int id, int channel)
4086 {
4087         int i, found = 0;
4088         struct megasas_cmd_fusion *cmd_fusion;
4089         struct fusion_context *fusion;
4090         fusion = instance->ctrl_context;
4091
4092         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4093                 cmd_fusion = fusion->cmd_list[i];
4094                 if (cmd_fusion->scmd &&
4095                         (cmd_fusion->scmd->device->id == id &&
4096                         cmd_fusion->scmd->device->channel == channel)) {
4097                         dev_info(&instance->pdev->dev,
4098                                 "SCSI commands pending to target"
4099                                 "channel %d id %d \tSMID: 0x%x\n",
4100                                 channel, id, cmd_fusion->index);
4101                         scsi_print_command(cmd_fusion->scmd);
4102                         found = 1;
4103                         break;
4104                 }
4105         }
4106
4107         return found ? FAILED : SUCCESS;
4108 }
4109
4110 /**
4111  * megasas_tm_response_code - translation of device response code
4112  * @ioc: per adapter object
4113  * @mpi_reply: MPI reply returned by firmware
4114  *
4115  * Return nothing.
4116  */
4117 static void
4118 megasas_tm_response_code(struct megasas_instance *instance,
4119                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4120 {
4121         char *desc;
4122
4123         switch (mpi_reply->ResponseCode) {
4124         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4125                 desc = "task management request completed";
4126                 break;
4127         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4128                 desc = "invalid frame";
4129                 break;
4130         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4131                 desc = "task management request not supported";
4132                 break;
4133         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4134                 desc = "task management request failed";
4135                 break;
4136         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4137                 desc = "task management request succeeded";
4138                 break;
4139         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4140                 desc = "invalid lun";
4141                 break;
4142         case 0xA:
4143                 desc = "overlapped tag attempted";
4144                 break;
4145         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4146                 desc = "task queued, however not sent to target";
4147                 break;
4148         default:
4149                 desc = "unknown";
4150                 break;
4151         }
4152         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4153                 mpi_reply->ResponseCode, desc);
4154         dev_dbg(&instance->pdev->dev,
4155                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4156                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4157                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4158                 mpi_reply->Function, mpi_reply->TaskType,
4159                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4160 }
4161
4162 /**
4163  * megasas_issue_tm - main routine for sending tm requests
4164  * @instance: per adapter struct
4165  * @device_handle: device handle
4166  * @channel: the channel assigned by the OS
4167  * @id: the id assigned by the OS
4168  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4169  * @smid_task: smid assigned to the task
4170  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4171  * Context: user
4172  *
4173  * MegaRaid use MPT interface for Task Magement request.
4174  * A generic API for sending task management requests to firmware.
4175  *
4176  * Return SUCCESS or FAILED.
4177  */
4178 static int
4179 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4180         uint channel, uint id, u16 smid_task, u8 type,
4181         struct MR_PRIV_DEVICE *mr_device_priv_data)
4182 {
4183         struct MR_TASK_MANAGE_REQUEST *mr_request;
4184         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4185         unsigned long timeleft;
4186         struct megasas_cmd_fusion *cmd_fusion;
4187         struct megasas_cmd *cmd_mfi;
4188         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4189         struct fusion_context *fusion = NULL;
4190         struct megasas_cmd_fusion *scsi_lookup;
4191         int rc;
4192         int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4193         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4194
4195         fusion = instance->ctrl_context;
4196
4197         cmd_mfi = megasas_get_cmd(instance);
4198
4199         if (!cmd_mfi) {
4200                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4201                         __func__, __LINE__);
4202                 return -ENOMEM;
4203         }
4204
4205         cmd_fusion = megasas_get_cmd_fusion(instance,
4206                         instance->max_scsi_cmds + cmd_mfi->index);
4207
4208         /*  Save the smid. To be used for returning the cmd */
4209         cmd_mfi->context.smid = cmd_fusion->index;
4210
4211         req_desc = megasas_get_request_descriptor(instance,
4212                         (cmd_fusion->index - 1));
4213
4214         cmd_fusion->request_desc = req_desc;
4215         req_desc->Words = 0;
4216
4217         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4218         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4219         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4220         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4221         mpi_request->DevHandle = cpu_to_le16(device_handle);
4222         mpi_request->TaskType = type;
4223         mpi_request->TaskMID = cpu_to_le16(smid_task);
4224         mpi_request->LUN[1] = 0;
4225
4226
4227         req_desc = cmd_fusion->request_desc;
4228         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4229         req_desc->HighPriority.RequestFlags =
4230                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4231                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4232         req_desc->HighPriority.MSIxIndex =  0;
4233         req_desc->HighPriority.LMID = 0;
4234         req_desc->HighPriority.Reserved1 = 0;
4235
4236         if (channel < MEGASAS_MAX_PD_CHANNELS)
4237                 mr_request->tmReqFlags.isTMForPD = 1;
4238         else
4239                 mr_request->tmReqFlags.isTMForLD = 1;
4240
4241         init_completion(&cmd_fusion->done);
4242         megasas_fire_cmd_fusion(instance, req_desc);
4243
4244         switch (type) {
4245         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4246                 timeout = mr_device_priv_data->task_abort_tmo;
4247                 break;
4248         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4249                 timeout = mr_device_priv_data->target_reset_tmo;
4250                 break;
4251         }
4252
4253         timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4254
4255         if (!timeleft) {
4256                 dev_err(&instance->pdev->dev,
4257                         "task mgmt type 0x%x timed out\n", type);
4258                 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
4259                 mutex_unlock(&instance->reset_mutex);
4260                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4261                 mutex_lock(&instance->reset_mutex);
4262                 return rc;
4263         }
4264
4265         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4266         megasas_tm_response_code(instance, mpi_reply);
4267
4268         megasas_return_cmd(instance, cmd_mfi);
4269         rc = SUCCESS;
4270         switch (type) {
4271         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4272                 scsi_lookup = fusion->cmd_list[smid_task - 1];
4273
4274                 if (scsi_lookup->scmd == NULL)
4275                         break;
4276                 else {
4277                         instance->instancet->disable_intr(instance);
4278                         megasas_sync_irqs((unsigned long)instance);
4279                         instance->instancet->enable_intr(instance);
4280                         if (scsi_lookup->scmd == NULL)
4281                                 break;
4282                 }
4283                 rc = FAILED;
4284                 break;
4285
4286         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4287                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4288                         break;
4289                 instance->instancet->disable_intr(instance);
4290                 megasas_sync_irqs((unsigned long)instance);
4291                 rc = megasas_track_scsiio(instance, id, channel);
4292                 instance->instancet->enable_intr(instance);
4293
4294                 break;
4295         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4296         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4297                 break;
4298         default:
4299                 rc = FAILED;
4300                 break;
4301         }
4302
4303         return rc;
4304
4305 }
4306
4307 /*
4308  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4309  * @instance: per adapter struct
4310  *
4311  * Return Non Zero index, if SMID found in outstanding commands
4312  */
4313 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4314 {
4315         int i, ret = 0;
4316         struct megasas_instance *instance;
4317         struct megasas_cmd_fusion *cmd_fusion;
4318         struct fusion_context *fusion;
4319
4320         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4321
4322         fusion = instance->ctrl_context;
4323
4324         for (i = 0; i < instance->max_scsi_cmds; i++) {
4325                 cmd_fusion = fusion->cmd_list[i];
4326                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4327                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4328                                 " SMID: %d\n", cmd_fusion->index);
4329                         ret = cmd_fusion->index;
4330                         break;
4331                 }
4332         }
4333
4334         return ret;
4335 }
4336
4337 /*
4338 * megasas_get_tm_devhandle - Get devhandle for TM request
4339 * @sdev-                     OS provided scsi device
4340 *
4341 * Returns-                   devhandle/targetID of SCSI device
4342 */
4343 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4344 {
4345         u16 pd_index = 0;
4346         u32 device_id;
4347         struct megasas_instance *instance;
4348         struct fusion_context *fusion;
4349         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4350         u16 devhandle = (u16)ULONG_MAX;
4351
4352         instance = (struct megasas_instance *)sdev->host->hostdata;
4353         fusion = instance->ctrl_context;
4354
4355         if (!MEGASAS_IS_LOGICAL(sdev)) {
4356                 if (instance->use_seqnum_jbod_fp) {
4357                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4358                                     + sdev->id;
4359                         pd_sync = (void *)fusion->pd_seq_sync
4360                                         [(instance->pd_seq_map_id - 1) & 1];
4361                         devhandle = pd_sync->seq[pd_index].devHandle;
4362                 } else
4363                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4364                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4365         } else {
4366                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4367                                 + sdev->id;
4368                 devhandle = device_id;
4369         }
4370
4371         return devhandle;
4372 }
4373
4374 /*
4375  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4376  * @scmd : pointer to scsi command object
4377  *
4378  * Return SUCCESS, if command aborted else FAILED
4379  */
4380
4381 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4382 {
4383         struct megasas_instance *instance;
4384         u16 smid, devhandle;
4385         int ret;
4386         struct MR_PRIV_DEVICE *mr_device_priv_data;
4387         mr_device_priv_data = scmd->device->hostdata;
4388
4389         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4390
4391         scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd);
4392         scsi_print_command(scmd);
4393
4394         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4395                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4396                 "SCSI host:%d\n", instance->host->host_no);
4397                 ret = FAILED;
4398                 return ret;
4399         }
4400
4401         if (!mr_device_priv_data) {
4402                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4403                         "scmd(%p)\n", scmd);
4404                 scmd->result = DID_NO_CONNECT << 16;
4405                 ret = SUCCESS;
4406                 goto out;
4407         }
4408
4409         if (!mr_device_priv_data->is_tm_capable) {
4410                 ret = FAILED;
4411                 goto out;
4412         }
4413
4414         mutex_lock(&instance->reset_mutex);
4415
4416         smid = megasas_fusion_smid_lookup(scmd);
4417
4418         if (!smid) {
4419                 ret = SUCCESS;
4420                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4421                         " issued is not found in outstanding commands\n");
4422                 mutex_unlock(&instance->reset_mutex);
4423                 goto out;
4424         }
4425
4426         devhandle = megasas_get_tm_devhandle(scmd->device);
4427
4428         if (devhandle == (u16)ULONG_MAX) {
4429                 ret = SUCCESS;
4430                 sdev_printk(KERN_INFO, scmd->device,
4431                         "task abort issued for invalid devhandle\n");
4432                 mutex_unlock(&instance->reset_mutex);
4433                 goto out;
4434         }
4435         sdev_printk(KERN_INFO, scmd->device,
4436                 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
4437                 scmd, devhandle);
4438
4439         mr_device_priv_data->tm_busy = 1;
4440         ret = megasas_issue_tm(instance, devhandle,
4441                         scmd->device->channel, scmd->device->id, smid,
4442                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4443                         mr_device_priv_data);
4444         mr_device_priv_data->tm_busy = 0;
4445
4446         mutex_unlock(&instance->reset_mutex);
4447 out:
4448         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
4449                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4450
4451         return ret;
4452 }
4453
4454 /*
4455  * megasas_reset_target_fusion : target reset function for fusion adapters
4456  * scmd: SCSI command pointer
4457  *
4458  * Returns SUCCESS if all commands associated with target aborted else FAILED
4459  */
4460
4461 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4462 {
4463
4464         struct megasas_instance *instance;
4465         int ret = FAILED;
4466         u16 devhandle;
4467         struct MR_PRIV_DEVICE *mr_device_priv_data;
4468         mr_device_priv_data = scmd->device->hostdata;
4469
4470         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4471
4472         sdev_printk(KERN_INFO, scmd->device,
4473                     "target reset called for scmd(%p)\n", scmd);
4474
4475         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4476                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4477                 "SCSI host:%d\n", instance->host->host_no);
4478                 ret = FAILED;
4479                 return ret;
4480         }
4481
4482         if (!mr_device_priv_data) {
4483                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4484                         "scmd(%p)\n", scmd);
4485                 scmd->result = DID_NO_CONNECT << 16;
4486                 ret = SUCCESS;
4487                 goto out;
4488         }
4489
4490         if (!mr_device_priv_data->is_tm_capable) {
4491                 ret = FAILED;
4492                 goto out;
4493         }
4494
4495         mutex_lock(&instance->reset_mutex);
4496         devhandle = megasas_get_tm_devhandle(scmd->device);
4497
4498         if (devhandle == (u16)ULONG_MAX) {
4499                 ret = SUCCESS;
4500                 sdev_printk(KERN_INFO, scmd->device,
4501                         "target reset issued for invalid devhandle\n");
4502                 mutex_unlock(&instance->reset_mutex);
4503                 goto out;
4504         }
4505
4506         sdev_printk(KERN_INFO, scmd->device,
4507                 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
4508                 scmd, devhandle);
4509         mr_device_priv_data->tm_busy = 1;
4510         ret = megasas_issue_tm(instance, devhandle,
4511                         scmd->device->channel, scmd->device->id, 0,
4512                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4513                         mr_device_priv_data);
4514         mr_device_priv_data->tm_busy = 0;
4515         mutex_unlock(&instance->reset_mutex);
4516 out:
4517         scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
4518                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4519
4520         return ret;
4521 }
4522
4523 /*SRIOV get other instance in cluster if any*/
4524 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4525 {
4526         int i;
4527
4528         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4529                 if (megasas_mgmt_info.instance[i] &&
4530                         (megasas_mgmt_info.instance[i] != instance) &&
4531                          megasas_mgmt_info.instance[i]->requestorId &&
4532                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4533                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4534                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4535                         return megasas_mgmt_info.instance[i];
4536         }
4537         return NULL;
4538 }
4539
4540 /* Check for a second path that is currently UP */
4541 int megasas_check_mpio_paths(struct megasas_instance *instance,
4542         struct scsi_cmnd *scmd)
4543 {
4544         struct megasas_instance *peer_instance = NULL;
4545         int retval = (DID_REQUEUE << 16);
4546
4547         if (instance->peerIsPresent) {
4548                 peer_instance = megasas_get_peer_instance(instance);
4549                 if ((peer_instance) &&
4550                         (atomic_read(&peer_instance->adprecovery) ==
4551                         MEGASAS_HBA_OPERATIONAL))
4552                         retval = (DID_NO_CONNECT << 16);
4553         }
4554         return retval;
4555 }
4556
4557 /* Core fusion reset function */
4558 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4559 {
4560         int retval = SUCCESS, i, j, convert = 0;
4561         struct megasas_instance *instance;
4562         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4563         struct fusion_context *fusion;
4564         u32 abs_state, status_reg, reset_adapter;
4565         u32 io_timeout_in_crash_mode = 0;
4566         struct scsi_cmnd *scmd_local = NULL;
4567         struct scsi_device *sdev;
4568         int ret_target_prop = DCMD_FAILED;
4569         bool is_target_prop = false;
4570
4571         instance = (struct megasas_instance *)shost->hostdata;
4572         fusion = instance->ctrl_context;
4573
4574         mutex_lock(&instance->reset_mutex);
4575
4576         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4577                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4578                        "returning FAILED for scsi%d.\n",
4579                         instance->host->host_no);
4580                 mutex_unlock(&instance->reset_mutex);
4581                 return FAILED;
4582         }
4583         status_reg = instance->instancet->read_fw_status_reg(instance);
4584         abs_state = status_reg & MFI_STATE_MASK;
4585
4586         /* IO timeout detected, forcibly put FW in FAULT state */
4587         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4588                 instance->crash_dump_app_support && reason) {
4589                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4590                         "forcibly FAULT Firmware\n");
4591                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4592                 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4593                 writel(status_reg | MFI_STATE_FORCE_OCR,
4594                         &instance->reg_set->doorbell);
4595                 readl(&instance->reg_set->doorbell);
4596                 mutex_unlock(&instance->reset_mutex);
4597                 do {
4598                         ssleep(3);
4599                         io_timeout_in_crash_mode++;
4600                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4601                                 "seconds for crash dump collection and OCR "
4602                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4603                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4604                         (io_timeout_in_crash_mode < 80));
4605
4606                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4607                         dev_info(&instance->pdev->dev, "OCR done for IO "
4608                                 "timeout case\n");
4609                         retval = SUCCESS;
4610                 } else {
4611                         dev_info(&instance->pdev->dev, "Controller is not "
4612                                 "operational after 240 seconds wait for IO "
4613                                 "timeout case in FW crash dump mode\n do "
4614                                 "OCR/kill adapter\n");
4615                         retval = megasas_reset_fusion(shost, 0);
4616                 }
4617                 return retval;
4618         }
4619
4620         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4621                 del_timer_sync(&instance->sriov_heartbeat_timer);
4622         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4623         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4624         instance->instancet->disable_intr(instance);
4625         megasas_sync_irqs((unsigned long)instance);
4626
4627         /* First try waiting for commands to complete */
4628         if (megasas_wait_for_outstanding_fusion(instance, reason,
4629                                                 &convert)) {
4630                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4631                 dev_warn(&instance->pdev->dev, "resetting fusion "
4632                        "adapter scsi%d.\n", instance->host->host_no);
4633                 if (convert)
4634                         reason = 0;
4635
4636                 if (megasas_dbg_lvl & OCR_LOGS)
4637                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4638
4639                 /* Now return commands back to the OS */
4640                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4641                         cmd_fusion = fusion->cmd_list[i];
4642                         /*check for extra commands issued by driver*/
4643                         if (instance->adapter_type >= VENTURA_SERIES) {
4644                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4645                                 megasas_return_cmd_fusion(instance, r1_cmd);
4646                         }
4647                         scmd_local = cmd_fusion->scmd;
4648                         if (cmd_fusion->scmd) {
4649                                 if (megasas_dbg_lvl & OCR_LOGS) {
4650                                         sdev_printk(KERN_INFO,
4651                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4652                                                 cmd_fusion->index);
4653                                         scsi_print_command(cmd_fusion->scmd);
4654                                 }
4655
4656                                 scmd_local->result =
4657                                         megasas_check_mpio_paths(instance,
4658                                                         scmd_local);
4659                                 if (instance->ldio_threshold &&
4660                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4661                                         atomic_dec(&instance->ldio_outstanding);
4662                                 megasas_return_cmd_fusion(instance, cmd_fusion);
4663                                 scsi_dma_unmap(scmd_local);
4664                                 scmd_local->scsi_done(scmd_local);
4665                         }
4666                 }
4667
4668                 atomic_set(&instance->fw_outstanding, 0);
4669
4670                 status_reg = instance->instancet->read_fw_status_reg(instance);
4671                 abs_state = status_reg & MFI_STATE_MASK;
4672                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4673                 if (instance->disableOnlineCtrlReset ||
4674                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4675                         /* Reset not supported, kill adapter */
4676                         dev_warn(&instance->pdev->dev, "Reset not supported"
4677                                ", killing adapter scsi%d.\n",
4678                                 instance->host->host_no);
4679                         megaraid_sas_kill_hba(instance);
4680                         instance->skip_heartbeat_timer_del = 1;
4681                         retval = FAILED;
4682                         goto out;
4683                 }
4684
4685                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4686                 if (instance->requestorId && !reason) {
4687                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4688                         goto transition_to_ready;
4689                 }
4690
4691                 /* Now try to reset the chip */
4692                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
4693
4694                         if (instance->instancet->adp_reset
4695                                 (instance, instance->reg_set))
4696                                 continue;
4697 transition_to_ready:
4698                         /* Wait for FW to become ready */
4699                         if (megasas_transition_to_ready(instance, 1)) {
4700                                 dev_warn(&instance->pdev->dev,
4701                                         "Failed to transition controller to ready for "
4702                                         "scsi%d.\n", instance->host->host_no);
4703                                 if (instance->requestorId && !reason)
4704                                         goto fail_kill_adapter;
4705                                 else
4706                                         continue;
4707                         }
4708                         megasas_reset_reply_desc(instance);
4709                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4710
4711                         if (megasas_ioc_init_fusion(instance)) {
4712                                 if (instance->requestorId && !reason)
4713                                         goto fail_kill_adapter;
4714                                 else
4715                                         continue;
4716                         }
4717
4718                         if (megasas_get_ctrl_info(instance)) {
4719                                 dev_info(&instance->pdev->dev,
4720                                         "Failed from %s %d\n",
4721                                         __func__, __LINE__);
4722                                 megaraid_sas_kill_hba(instance);
4723                                 retval = FAILED;
4724                                 goto out;
4725                         }
4726
4727                         megasas_refire_mgmt_cmd(instance);
4728
4729                         /* Reset load balance info */
4730                         if (fusion->load_balance_info)
4731                                 memset(fusion->load_balance_info, 0,
4732                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
4733                                        MAX_LOGICAL_DRIVES_EXT));
4734
4735                         if (!megasas_get_map_info(instance))
4736                                 megasas_sync_map_info(instance);
4737
4738                         megasas_setup_jbod_map(instance);
4739
4740                         /* reset stream detection array */
4741                         if (instance->adapter_type >= VENTURA_SERIES) {
4742                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
4743                                         memset(fusion->stream_detect_by_ld[j],
4744                                         0, sizeof(struct LD_STREAM_DETECT));
4745                                  fusion->stream_detect_by_ld[j]->mru_bit_map
4746                                                 = MR_STREAM_BITMAP;
4747                                 }
4748                         }
4749
4750                         clear_bit(MEGASAS_FUSION_IN_RESET,
4751                                   &instance->reset_flags);
4752                         instance->instancet->enable_intr(instance);
4753
4754                         shost_for_each_device(sdev, shost) {
4755                                 if ((instance->tgt_prop) &&
4756                                     (instance->nvme_page_size))
4757                                         ret_target_prop = megasas_get_target_prop(instance, sdev);
4758
4759                                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
4760                                 megasas_set_dynamic_target_properties(sdev, is_target_prop);
4761                         }
4762
4763                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4764
4765                         dev_info(&instance->pdev->dev, "Interrupts are enabled and"
4766                                 " controller is OPERATIONAL for scsi:%d\n",
4767                                 instance->host->host_no);
4768
4769                         /* Restart SR-IOV heartbeat */
4770                         if (instance->requestorId) {
4771                                 if (!megasas_sriov_start_heartbeat(instance, 0))
4772                                         megasas_start_timer(instance);
4773                                 else
4774                                         instance->skip_heartbeat_timer_del = 1;
4775                         }
4776
4777                         if (instance->crash_dump_drv_support &&
4778                                 instance->crash_dump_app_support)
4779                                 megasas_set_crash_dump_params(instance,
4780                                         MR_CRASH_BUF_TURN_ON);
4781                         else
4782                                 megasas_set_crash_dump_params(instance,
4783                                         MR_CRASH_BUF_TURN_OFF);
4784
4785                         if (instance->snapdump_wait_time) {
4786                                 megasas_get_snapdump_properties(instance);
4787                                 dev_info(&instance->pdev->dev,
4788                                          "Snap dump wait time\t: %d\n",
4789                                          instance->snapdump_wait_time);
4790                         }
4791
4792                         retval = SUCCESS;
4793
4794                         /* Adapter reset completed successfully */
4795                         dev_warn(&instance->pdev->dev,
4796                                  "Reset successful for scsi%d.\n",
4797                                  instance->host->host_no);
4798
4799                         goto out;
4800                 }
4801 fail_kill_adapter:
4802                 /* Reset failed, kill the adapter */
4803                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
4804                        "adapter scsi%d.\n", instance->host->host_no);
4805                 megaraid_sas_kill_hba(instance);
4806                 instance->skip_heartbeat_timer_del = 1;
4807                 retval = FAILED;
4808         } else {
4809                 /* For VF: Restart HB timer if we didn't OCR */
4810                 if (instance->requestorId) {
4811                         megasas_start_timer(instance);
4812                 }
4813                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4814                 instance->instancet->enable_intr(instance);
4815                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4816         }
4817 out:
4818         clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4819         mutex_unlock(&instance->reset_mutex);
4820         return retval;
4821 }
4822
4823 /* Fusion Crash dump collection */
4824 void  megasas_fusion_crash_dump(struct megasas_instance *instance)
4825 {
4826         u32 status_reg;
4827         u8 partial_copy = 0;
4828         int wait = 0;
4829
4830
4831         status_reg = instance->instancet->read_fw_status_reg(instance);
4832
4833         /*
4834          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
4835          * to host crash buffers
4836          */
4837         if (instance->drv_buf_index == 0) {
4838                 /* Buffer is already allocated for old Crash dump.
4839                  * Do OCR and do not wait for crash dump collection
4840                  */
4841                 if (instance->drv_buf_alloc) {
4842                         dev_info(&instance->pdev->dev, "earlier crash dump is "
4843                                 "not yet copied by application, ignoring this "
4844                                 "crash dump and initiating OCR\n");
4845                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4846                         writel(status_reg,
4847                                 &instance->reg_set->outbound_scratch_pad_0);
4848                         readl(&instance->reg_set->outbound_scratch_pad_0);
4849                         return;
4850                 }
4851                 megasas_alloc_host_crash_buffer(instance);
4852                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
4853                         "allocated: %d\n", instance->drv_buf_alloc);
4854         }
4855
4856         while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
4857                (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
4858                 if (!(status_reg & MFI_STATE_DMADONE)) {
4859                         /*
4860                          * Next crash dump buffer is not yet DMA'd by FW
4861                          * Check after 10ms. Wait for 1 second for FW to
4862                          * post the next buffer. If not bail out.
4863                          */
4864                         wait++;
4865                         msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
4866                         status_reg = instance->instancet->read_fw_status_reg(
4867                                         instance);
4868                         continue;
4869                 }
4870
4871                 wait = 0;
4872                 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
4873                         dev_info(&instance->pdev->dev,
4874                                  "Driver is done copying the buffer: %d\n",
4875                                  instance->drv_buf_alloc);
4876                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4877                         partial_copy = 1;
4878                         break;
4879                 } else {
4880                         memcpy(instance->crash_buf[instance->drv_buf_index],
4881                                instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
4882                         instance->drv_buf_index++;
4883                         status_reg &= ~MFI_STATE_DMADONE;
4884                 }
4885
4886                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
4887                 readl(&instance->reg_set->outbound_scratch_pad_0);
4888
4889                 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
4890                 status_reg = instance->instancet->read_fw_status_reg(instance);
4891         }
4892
4893         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
4894                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
4895                         "of copied buffers: %d\n", instance->drv_buf_index);
4896                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
4897                 instance->fw_crash_state = AVAILABLE;
4898                 instance->drv_buf_index = 0;
4899                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
4900                 readl(&instance->reg_set->outbound_scratch_pad_0);
4901                 if (!partial_copy)
4902                         megasas_reset_fusion(instance->host, 0);
4903         }
4904 }
4905
4906
4907 /* Fusion OCR work queue */
4908 void megasas_fusion_ocr_wq(struct work_struct *work)
4909 {
4910         struct megasas_instance *instance =
4911                 container_of(work, struct megasas_instance, work_init);
4912
4913         megasas_reset_fusion(instance->host, 0);
4914 }
4915
4916 /* Allocate fusion context */
4917 int
4918 megasas_alloc_fusion_context(struct megasas_instance *instance)
4919 {
4920         struct fusion_context *fusion;
4921
4922         instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
4923                                          GFP_KERNEL);
4924         if (!instance->ctrl_context) {
4925                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4926                         __func__, __LINE__);
4927                 return -ENOMEM;
4928         }
4929
4930         fusion = instance->ctrl_context;
4931
4932         fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4933                                               sizeof(LD_SPAN_INFO));
4934         fusion->log_to_span =
4935                 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4936                                                 fusion->log_to_span_pages);
4937         if (!fusion->log_to_span) {
4938                 fusion->log_to_span =
4939                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
4940                                            sizeof(LD_SPAN_INFO)));
4941                 if (!fusion->log_to_span) {
4942                         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4943                                 __func__, __LINE__);
4944                         return -ENOMEM;
4945                 }
4946         }
4947
4948         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4949                 sizeof(struct LD_LOAD_BALANCE_INFO));
4950         fusion->load_balance_info =
4951                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4952                 fusion->load_balance_info_pages);
4953         if (!fusion->load_balance_info) {
4954                 fusion->load_balance_info =
4955                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
4956                                            sizeof(struct LD_LOAD_BALANCE_INFO)));
4957                 if (!fusion->load_balance_info)
4958                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
4959                                 "continuing without Load Balance support\n");
4960         }
4961
4962         return 0;
4963 }
4964
4965 void
4966 megasas_free_fusion_context(struct megasas_instance *instance)
4967 {
4968         struct fusion_context *fusion = instance->ctrl_context;
4969
4970         if (fusion) {
4971                 if (fusion->load_balance_info) {
4972                         if (is_vmalloc_addr(fusion->load_balance_info))
4973                                 vfree(fusion->load_balance_info);
4974                         else
4975                                 free_pages((ulong)fusion->load_balance_info,
4976                                         fusion->load_balance_info_pages);
4977                 }
4978
4979                 if (fusion->log_to_span) {
4980                         if (is_vmalloc_addr(fusion->log_to_span))
4981                                 vfree(fusion->log_to_span);
4982                         else
4983                                 free_pages((ulong)fusion->log_to_span,
4984                                            fusion->log_to_span_pages);
4985                 }
4986
4987                 kfree(fusion);
4988         }
4989 }
4990
4991 struct megasas_instance_template megasas_instance_template_fusion = {
4992         .enable_intr = megasas_enable_intr_fusion,
4993         .disable_intr = megasas_disable_intr_fusion,
4994         .clear_intr = megasas_clear_intr_fusion,
4995         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
4996         .adp_reset = megasas_adp_reset_fusion,
4997         .check_reset = megasas_check_reset_fusion,
4998         .service_isr = megasas_isr_fusion,
4999         .tasklet = megasas_complete_cmd_dpc_fusion,
5000         .init_adapter = megasas_init_adapter_fusion,
5001         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5002         .issue_dcmd = megasas_issue_dcmd_fusion,
5003 };