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 = readl(&regs->outbound_intr_status);
 179
 180         if (status & 1) {
 181                 writel(status, &regs->outbound_intr_status);
 182                 readl(&regs->outbound_intr_status);
 183                 return 1;
 184         }
 185         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 186                 return 0;
 187
 188         return 1;
 189 }
 190
 191 /**
 192  * megasas_get_cmd_fusion -     Get a command from the free pool
 193  * @instance:           Adapter soft state
 194  *
 195  * Returns a blk_tag indexed mpt frame
 196  */
 197 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 198                                                   *instance, u32 blk_tag)
 199 {
 200         struct fusion_context *fusion;
 201
 202         fusion = instance->ctrl_context;
 203         return fusion->cmd_list[blk_tag];
 204 }
 205
 206 /**
 207  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 208  * @instance:           Adapter soft state
 209  * @cmd:                Command packet to be returned to free command pool
 210  */
 211 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 212         struct megasas_cmd_fusion *cmd)
 213 {
 214         cmd->scmd = NULL;
 215         memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 216         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 217         cmd->cmd_completed = false;
 218 }
 219
 220 /**
 221  * megasas_fire_cmd_fusion -    Sends command to the FW
 222  * @instance:                   Adapter soft state
 223  * @req_desc:                   64bit Request descriptor
 224  *
 225  * Perform PCI Write.
 226  */
 227
 228 static void
 229 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 230                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 231 {
 232 #if defined(writeq) && defined(CONFIG_64BIT)
 233         u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
 234                 le32_to_cpu(req_desc->u.low));
 235
 236         writeq(req_data, &instance->reg_set->inbound_low_queue_port);
 237 #else
 238         unsigned long flags;
 239         spin_lock_irqsave(&instance->hba_lock, flags);
 240         writel(le32_to_cpu(req_desc->u.low),
 241                 &instance->reg_set->inbound_low_queue_port);
 242         writel(le32_to_cpu(req_desc->u.high),
 243                 &instance->reg_set->inbound_high_queue_port);
 244         mmiowb();
 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         struct fusion_context *fusion;
 940
 941         u32 msecs = seconds * 1000;
 942
 943         fusion = instance->ctrl_context;
 944         /*
 945          * Wait for cmd_status to change
 946          */
 947         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
 948                 rmb();
 949                 msleep(20);
 950         }
 951
 952         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
 953                 return DCMD_TIMEOUT;
 954         else if (frame_hdr->cmd_status == MFI_STAT_OK)
 955                 return DCMD_SUCCESS;
 956         else
 957                 return DCMD_FAILED;
 958 }
 959
 960 /**
 961  * megasas_ioc_init_fusion -    Initializes the FW
 962  * @instance:           Adapter soft state
 963  *
 964  * Issues the IOC Init cmd
 965  */
 966 int
 967 megasas_ioc_init_fusion(struct megasas_instance *instance)
 968 {
 969         struct megasas_init_frame *init_frame;
 970         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
 971         dma_addr_t      ioc_init_handle;
 972         struct megasas_cmd *cmd;
 973         u8 ret, cur_rdpq_mode;
 974         struct fusion_context *fusion;
 975         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
 976         int i;
 977         struct megasas_header *frame_hdr;
 978         const char *sys_info;
 979         MFI_CAPABILITIES *drv_ops;
 980         u32 scratch_pad_1;
 981         ktime_t time;
 982         bool cur_fw_64bit_dma_capable;
 983
 984         fusion = instance->ctrl_context;
 985
 986         ioc_init_handle = fusion->ioc_init_request_phys;
 987         IOCInitMessage = fusion->ioc_init_request;
 988
 989         cmd = fusion->ioc_init_cmd;
 990
 991         scratch_pad_1 = megasas_readl
 992                 (instance, &instance->reg_set->outbound_scratch_pad_1);
 993
 994         cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
 995
 996         if (instance->adapter_type == INVADER_SERIES) {
 997                 cur_fw_64bit_dma_capable =
 998                         (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
 999
1000                 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
1001                         dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1002                                 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1003                         megaraid_sas_kill_hba(instance);
1004                         ret = 1;
1005                         goto fail_fw_init;
1006                 }
1007         }
1008
1009         if (instance->is_rdpq && !cur_rdpq_mode) {
1010                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1011                         " from RDPQ mode to non RDPQ mode\n");
1012                 ret = 1;
1013                 goto fail_fw_init;
1014         }
1015
1016         instance->fw_sync_cache_support = (scratch_pad_1 &
1017                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1018         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1019                  instance->fw_sync_cache_support ? "Yes" : "No");
1020
1021         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1022
1023         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1024         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1025         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1026         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1027         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1028
1029         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1030         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1031                         cpu_to_le64(fusion->rdpq_phys) :
1032                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1033         IOCInitMessage->MsgFlags = instance->is_rdpq ?
1034                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1035         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1036         IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1037         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1038         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1039
1040         time = ktime_get_real();
1041         /* Convert to milliseconds as per FW requirement */
1042         IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1043
1044         init_frame = (struct megasas_init_frame *)cmd->frame;
1045         memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1046
1047         frame_hdr = &cmd->frame->hdr;
1048         frame_hdr->cmd_status = 0xFF;
1049         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1050
1051         init_frame->cmd = MFI_CMD_INIT;
1052         init_frame->cmd_status = 0xFF;
1053
1054         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1055
1056         /* driver support Extended MSIX */
1057         if (instance->adapter_type >= INVADER_SERIES)
1058                 drv_ops->mfi_capabilities.support_additional_msix = 1;
1059         /* driver supports HA / Remote LUN over Fast Path interface */
1060         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1061
1062         drv_ops->mfi_capabilities.support_max_255lds = 1;
1063         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1064         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1065
1066         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1067                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1068
1069         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1070         if (!dual_qdepth_disable)
1071                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1072
1073         drv_ops->mfi_capabilities.support_qd_throttling = 1;
1074         drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1075         drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1076
1077         if (instance->consistent_mask_64bit)
1078                 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1079
1080         /* Convert capability to LE32 */
1081         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1082
1083         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1084         if (instance->system_info_buf && sys_info) {
1085                 memcpy(instance->system_info_buf->systemId, sys_info,
1086                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1087                 instance->system_info_buf->systemIdLength =
1088                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1089                 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1090                 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1091         }
1092
1093         init_frame->queue_info_new_phys_addr_hi =
1094                 cpu_to_le32(upper_32_bits(ioc_init_handle));
1095         init_frame->queue_info_new_phys_addr_lo =
1096                 cpu_to_le32(lower_32_bits(ioc_init_handle));
1097         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1098
1099         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1100         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1101         req_desc.MFAIo.RequestFlags =
1102                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1103                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1104
1105         /*
1106          * disable the intr before firing the init frame
1107          */
1108         instance->instancet->disable_intr(instance);
1109
1110         for (i = 0; i < (10 * 1000); i += 20) {
1111                 if (megasas_readl(instance, &instance->reg_set->doorbell) & 1)
1112                         msleep(20);
1113                 else
1114                         break;
1115         }
1116
1117         megasas_fire_cmd_fusion(instance, &req_desc);
1118
1119         wait_and_poll(instance, cmd, MFI_IO_TIMEOUT_SECS);
1120
1121         frame_hdr = &cmd->frame->hdr;
1122         if (frame_hdr->cmd_status != 0) {
1123                 ret = 1;
1124                 goto fail_fw_init;
1125         }
1126
1127         return 0;
1128
1129 fail_fw_init:
1130         dev_err(&instance->pdev->dev,
1131                 "Init cmd return status FAILED for SCSI host %d\n",
1132                 instance->host->host_no);
1133
1134         return ret;
1135 }
1136
1137 /**
1138  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
1139  * @instance:           Adapter soft state
1140  * @pend:               set to 1, if it is pended jbod map.
1141  *
1142  * Issue Jbod map to the firmware. If it is pended command,
1143  * issue command and return. If it is first instance of jbod map
1144  * issue and receive command.
1145  */
1146 int
1147 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1148         int ret = 0;
1149         u32 pd_seq_map_sz;
1150         struct megasas_cmd *cmd;
1151         struct megasas_dcmd_frame *dcmd;
1152         struct fusion_context *fusion = instance->ctrl_context;
1153         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1154         dma_addr_t pd_seq_h;
1155
1156         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1157         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1158         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
1159                         (sizeof(struct MR_PD_CFG_SEQ) *
1160                         (MAX_PHYSICAL_DEVICES - 1));
1161
1162         cmd = megasas_get_cmd(instance);
1163         if (!cmd) {
1164                 dev_err(&instance->pdev->dev,
1165                         "Could not get mfi cmd. Fail from %s %d\n",
1166                         __func__, __LINE__);
1167                 return -ENOMEM;
1168         }
1169
1170         dcmd = &cmd->frame->dcmd;
1171
1172         memset(pd_sync, 0, pd_seq_map_sz);
1173         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1174
1175         if (pend) {
1176                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1177                 dcmd->flags = MFI_FRAME_DIR_WRITE;
1178                 instance->jbod_seq_cmd = cmd;
1179         } else {
1180                 dcmd->flags = MFI_FRAME_DIR_READ;
1181         }
1182
1183         dcmd->cmd = MFI_CMD_DCMD;
1184         dcmd->cmd_status = 0xFF;
1185         dcmd->sge_count = 1;
1186         dcmd->timeout = 0;
1187         dcmd->pad_0 = 0;
1188         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1189         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1190
1191         megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1192
1193         if (pend) {
1194                 instance->instancet->issue_dcmd(instance, cmd);
1195                 return 0;
1196         }
1197
1198         /* Below code is only for non pended DCMD */
1199         if (!instance->mask_interrupts)
1200                 ret = megasas_issue_blocked_cmd(instance, cmd,
1201                         MFI_IO_TIMEOUT_SECS);
1202         else
1203                 ret = megasas_issue_polled(instance, cmd);
1204
1205         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1206                 dev_warn(&instance->pdev->dev,
1207                         "driver supports max %d JBOD, but FW reports %d\n",
1208                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1209                 ret = -EINVAL;
1210         }
1211
1212         if (ret == DCMD_TIMEOUT)
1213                 megaraid_sas_kill_hba(instance);
1214
1215         if (ret == DCMD_SUCCESS)
1216                 instance->pd_seq_map_id++;
1217
1218         megasas_return_cmd(instance, cmd);
1219         return ret;
1220 }
1221
1222 /*
1223  * megasas_get_ld_map_info -    Returns FW's ld_map structure
1224  * @instance:                           Adapter soft state
1225  * @pend:                               Pend the command or not
1226  * Issues an internal command (DCMD) to get the FW's controller PD
1227  * list structure.  This information is mainly used to find out SYSTEM
1228  * supported by the FW.
1229  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1230  * dcmd.mbox.b[0]       - number of LDs being sync'd
1231  * dcmd.mbox.b[1]       - 0 - complete command immediately.
1232  *                      - 1 - pend till config change
1233  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1234  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1235  *                              uses extended struct MR_FW_RAID_MAP_EXT
1236  */
1237 static int
1238 megasas_get_ld_map_info(struct megasas_instance *instance)
1239 {
1240         int ret = 0;
1241         struct megasas_cmd *cmd;
1242         struct megasas_dcmd_frame *dcmd;
1243         void *ci;
1244         dma_addr_t ci_h = 0;
1245         u32 size_map_info;
1246         struct fusion_context *fusion;
1247
1248         cmd = megasas_get_cmd(instance);
1249
1250         if (!cmd) {
1251                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1252                 return -ENOMEM;
1253         }
1254
1255         fusion = instance->ctrl_context;
1256
1257         if (!fusion) {
1258                 megasas_return_cmd(instance, cmd);
1259                 return -ENXIO;
1260         }
1261
1262         dcmd = &cmd->frame->dcmd;
1263
1264         size_map_info = fusion->current_map_sz;
1265
1266         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1267         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1268
1269         if (!ci) {
1270                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1271                 megasas_return_cmd(instance, cmd);
1272                 return -ENOMEM;
1273         }
1274
1275         memset(ci, 0, fusion->max_map_sz);
1276         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1277         dcmd->cmd = MFI_CMD_DCMD;
1278         dcmd->cmd_status = 0xFF;
1279         dcmd->sge_count = 1;
1280         dcmd->flags = MFI_FRAME_DIR_READ;
1281         dcmd->timeout = 0;
1282         dcmd->pad_0 = 0;
1283         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1284         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1285
1286         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1287
1288         if (!instance->mask_interrupts)
1289                 ret = megasas_issue_blocked_cmd(instance, cmd,
1290                         MFI_IO_TIMEOUT_SECS);
1291         else
1292                 ret = megasas_issue_polled(instance, cmd);
1293
1294         if (ret == DCMD_TIMEOUT)
1295                 megaraid_sas_kill_hba(instance);
1296
1297         megasas_return_cmd(instance, cmd);
1298
1299         return ret;
1300 }
1301
1302 u8
1303 megasas_get_map_info(struct megasas_instance *instance)
1304 {
1305         struct fusion_context *fusion = instance->ctrl_context;
1306
1307         fusion->fast_path_io = 0;
1308         if (!megasas_get_ld_map_info(instance)) {
1309                 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1310                         fusion->fast_path_io = 1;
1311                         return 0;
1312                 }
1313         }
1314         return 1;
1315 }
1316
1317 /*
1318  * megasas_sync_map_info -      Returns FW's ld_map structure
1319  * @instance:                           Adapter soft state
1320  *
1321  * Issues an internal command (DCMD) to get the FW's controller PD
1322  * list structure.  This information is mainly used to find out SYSTEM
1323  * supported by the FW.
1324  */
1325 int
1326 megasas_sync_map_info(struct megasas_instance *instance)
1327 {
1328         int i;
1329         struct megasas_cmd *cmd;
1330         struct megasas_dcmd_frame *dcmd;
1331         u16 num_lds;
1332         u32 size_sync_info;
1333         struct fusion_context *fusion;
1334         struct MR_LD_TARGET_SYNC *ci = NULL;
1335         struct MR_DRV_RAID_MAP_ALL *map;
1336         struct MR_LD_RAID  *raid;
1337         struct MR_LD_TARGET_SYNC *ld_sync;
1338         dma_addr_t ci_h = 0;
1339         u32 size_map_info;
1340
1341         cmd = megasas_get_cmd(instance);
1342
1343         if (!cmd) {
1344                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1345                 return -ENOMEM;
1346         }
1347
1348         fusion = instance->ctrl_context;
1349
1350         if (!fusion) {
1351                 megasas_return_cmd(instance, cmd);
1352                 return 1;
1353         }
1354
1355         map = fusion->ld_drv_map[instance->map_id & 1];
1356
1357         num_lds = le16_to_cpu(map->raidMap.ldCount);
1358
1359         dcmd = &cmd->frame->dcmd;
1360
1361         size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
1362
1363         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1364
1365         ci = (struct MR_LD_TARGET_SYNC *)
1366           fusion->ld_map[(instance->map_id - 1) & 1];
1367         memset(ci, 0, fusion->max_map_sz);
1368
1369         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1370
1371         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1372
1373         for (i = 0; i < num_lds; i++, ld_sync++) {
1374                 raid = MR_LdRaidGet(i, map);
1375                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1376                 ld_sync->seqNum = raid->seqNum;
1377         }
1378
1379         size_map_info = fusion->current_map_sz;
1380
1381         dcmd->cmd = MFI_CMD_DCMD;
1382         dcmd->cmd_status = 0xFF;
1383         dcmd->sge_count = 1;
1384         dcmd->flags = MFI_FRAME_DIR_WRITE;
1385         dcmd->timeout = 0;
1386         dcmd->pad_0 = 0;
1387         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1388         dcmd->mbox.b[0] = num_lds;
1389         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1390         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1391
1392         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1393
1394         instance->map_update_cmd = cmd;
1395
1396         instance->instancet->issue_dcmd(instance, cmd);
1397
1398         return 0;
1399 }
1400
1401 /*
1402  * meagasas_display_intel_branding - Display branding string
1403  * @instance: per adapter object
1404  *
1405  * Return nothing.
1406  */
1407 static void
1408 megasas_display_intel_branding(struct megasas_instance *instance)
1409 {
1410         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1411                 return;
1412
1413         switch (instance->pdev->device) {
1414         case PCI_DEVICE_ID_LSI_INVADER:
1415                 switch (instance->pdev->subsystem_device) {
1416                 case MEGARAID_INTEL_RS3DC080_SSDID:
1417                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1418                                 instance->host->host_no,
1419                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1420                         break;
1421                 case MEGARAID_INTEL_RS3DC040_SSDID:
1422                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1423                                 instance->host->host_no,
1424                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1425                         break;
1426                 case MEGARAID_INTEL_RS3SC008_SSDID:
1427                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1428                                 instance->host->host_no,
1429                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1430                         break;
1431                 case MEGARAID_INTEL_RS3MC044_SSDID:
1432                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1433                                 instance->host->host_no,
1434                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1435                         break;
1436                 default:
1437                         break;
1438                 }
1439                 break;
1440         case PCI_DEVICE_ID_LSI_FURY:
1441                 switch (instance->pdev->subsystem_device) {
1442                 case MEGARAID_INTEL_RS3WC080_SSDID:
1443                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1444                                 instance->host->host_no,
1445                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1446                         break;
1447                 case MEGARAID_INTEL_RS3WC040_SSDID:
1448                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1449                                 instance->host->host_no,
1450                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1451                         break;
1452                 default:
1453                         break;
1454                 }
1455                 break;
1456         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1457         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1458                 switch (instance->pdev->subsystem_device) {
1459                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1460                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1461                                 instance->host->host_no,
1462                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1463                         break;
1464                 default:
1465                         break;
1466                 }
1467                 break;
1468         default:
1469                 break;
1470         }
1471 }
1472
1473 /**
1474  * megasas_allocate_raid_maps - Allocate memory for RAID maps
1475  * @instance:                           Adapter soft state
1476  *
1477  * return:                              if success: return 0
1478  *                                      failed:  return -ENOMEM
1479  */
1480 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1481 {
1482         struct fusion_context *fusion;
1483         int i = 0;
1484
1485         fusion = instance->ctrl_context;
1486
1487         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1488
1489         for (i = 0; i < 2; i++) {
1490                 fusion->ld_map[i] = NULL;
1491
1492                 fusion->ld_drv_map[i] = (void *)
1493                         __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1494                                          fusion->drv_map_pages);
1495
1496                 if (!fusion->ld_drv_map[i]) {
1497                         fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1498
1499                         if (!fusion->ld_drv_map[i]) {
1500                                 dev_err(&instance->pdev->dev,
1501                                         "Could not allocate memory for local map"
1502                                         " size requested: %d\n",
1503                                         fusion->drv_map_sz);
1504                                 goto ld_drv_map_alloc_fail;
1505                         }
1506                 }
1507         }
1508
1509         for (i = 0; i < 2; i++) {
1510                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1511                                                        fusion->max_map_sz,
1512                                                        &fusion->ld_map_phys[i],
1513                                                        GFP_KERNEL);
1514                 if (!fusion->ld_map[i]) {
1515                         dev_err(&instance->pdev->dev,
1516                                 "Could not allocate memory for map info %s:%d\n",
1517                                 __func__, __LINE__);
1518                         goto ld_map_alloc_fail;
1519                 }
1520         }
1521
1522         return 0;
1523
1524 ld_map_alloc_fail:
1525         for (i = 0; i < 2; i++) {
1526                 if (fusion->ld_map[i])
1527                         dma_free_coherent(&instance->pdev->dev,
1528                                           fusion->max_map_sz,
1529                                           fusion->ld_map[i],
1530                                           fusion->ld_map_phys[i]);
1531         }
1532
1533 ld_drv_map_alloc_fail:
1534         for (i = 0; i < 2; i++) {
1535                 if (fusion->ld_drv_map[i]) {
1536                         if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1537                                 vfree(fusion->ld_drv_map[i]);
1538                         else
1539                                 free_pages((ulong)fusion->ld_drv_map[i],
1540                                            fusion->drv_map_pages);
1541                 }
1542         }
1543
1544         return -ENOMEM;
1545 }
1546
1547 /**
1548  * megasas_configure_queue_sizes -      Calculate size of request desc queue,
1549  *                                      reply desc queue,
1550  *                                      IO request frame queue, set can_queue.
1551  * @instance:                           Adapter soft state
1552  * @return:                             void
1553  */
1554 static inline
1555 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1556 {
1557         struct fusion_context *fusion;
1558         u16 max_cmd;
1559
1560         fusion = instance->ctrl_context;
1561         max_cmd = instance->max_fw_cmds;
1562
1563         if (instance->adapter_type >= VENTURA_SERIES)
1564                 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1565         else
1566                 instance->max_mpt_cmds = instance->max_fw_cmds;
1567
1568         instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1569         instance->cur_can_queue = instance->max_scsi_cmds;
1570         instance->host->can_queue = instance->cur_can_queue;
1571
1572         fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1573
1574         fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1575                                           instance->max_mpt_cmds;
1576         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1577                                         (fusion->reply_q_depth);
1578         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1579                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1580                  * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1581 }
1582
1583 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1584 {
1585         struct fusion_context *fusion;
1586         struct megasas_cmd *cmd;
1587
1588         fusion = instance->ctrl_context;
1589
1590         cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1591
1592         if (!cmd) {
1593                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1594                         __func__, __LINE__);
1595                 return -ENOMEM;
1596         }
1597
1598         cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1599                                         IOC_INIT_FRAME_SIZE,
1600                                         &cmd->frame_phys_addr, GFP_KERNEL);
1601
1602         if (!cmd->frame) {
1603                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1604                         __func__, __LINE__);
1605                 kfree(cmd);
1606                 return -ENOMEM;
1607         }
1608
1609         fusion->ioc_init_cmd = cmd;
1610         return 0;
1611 }
1612
1613 /**
1614  * megasas_free_ioc_init_cmd -  Free IOC INIT command frame
1615  * @instance:           Adapter soft state
1616  */
1617 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1618 {
1619         struct fusion_context *fusion;
1620
1621         fusion = instance->ctrl_context;
1622
1623         if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1624                 dma_free_coherent(&instance->pdev->dev,
1625                                   IOC_INIT_FRAME_SIZE,
1626                                   fusion->ioc_init_cmd->frame,
1627                                   fusion->ioc_init_cmd->frame_phys_addr);
1628
1629         kfree(fusion->ioc_init_cmd);
1630 }
1631
1632 /**
1633  * megasas_init_adapter_fusion -        Initializes the FW
1634  * @instance:           Adapter soft state
1635  *
1636  * This is the main function for initializing firmware.
1637  */
1638 u32
1639 megasas_init_adapter_fusion(struct megasas_instance *instance)
1640 {
1641         struct megasas_register_set __iomem *reg_set;
1642         struct fusion_context *fusion;
1643         u32 scratch_pad_1;
1644         int i = 0, count;
1645
1646         fusion = instance->ctrl_context;
1647
1648         reg_set = instance->reg_set;
1649
1650         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1651
1652         /*
1653          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1654          */
1655         instance->max_mfi_cmds =
1656                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1657
1658         megasas_configure_queue_sizes(instance);
1659
1660         scratch_pad_1 = megasas_readl(instance,
1661                                       &instance->reg_set->outbound_scratch_pad_1);
1662         /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1663          * Firmware support extended IO chain frame which is 4 times more than
1664          * legacy Firmware.
1665          * Legacy Firmware - Frame size is (8 * 128) = 1K
1666          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1667          */
1668         if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1669                 instance->max_chain_frame_sz =
1670                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1671                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1672         else
1673                 instance->max_chain_frame_sz =
1674                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1675                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1676
1677         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1678                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1679                         instance->max_chain_frame_sz,
1680                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1681                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1682         }
1683
1684         fusion->max_sge_in_main_msg =
1685                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1686                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1687
1688         fusion->max_sge_in_chain =
1689                 instance->max_chain_frame_sz
1690                         / sizeof(union MPI2_SGE_IO_UNION);
1691
1692         instance->max_num_sge =
1693                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1694                         + fusion->max_sge_in_chain - 2);
1695
1696         /* Used for pass thru MFI frame (DCMD) */
1697         fusion->chain_offset_mfi_pthru =
1698                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1699
1700         fusion->chain_offset_io_request =
1701                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1702                  sizeof(union MPI2_SGE_IO_UNION))/16;
1703
1704         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1705         for (i = 0 ; i < count; i++)
1706                 fusion->last_reply_idx[i] = 0;
1707
1708         /*
1709          * For fusion adapters, 3 commands for IOCTL and 8 commands
1710          * for driver's internal DCMDs.
1711          */
1712         instance->max_scsi_cmds = instance->max_fw_cmds -
1713                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1714                                 MEGASAS_FUSION_IOCTL_CMDS);
1715         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1716
1717         if (megasas_alloc_ioc_init_frame(instance))
1718                 return 1;
1719
1720         /*
1721          * Allocate memory for descriptors
1722          * Create a pool of commands
1723          */
1724         if (megasas_alloc_cmds(instance))
1725                 goto fail_alloc_mfi_cmds;
1726         if (megasas_alloc_cmds_fusion(instance))
1727                 goto fail_alloc_cmds;
1728
1729         if (megasas_ioc_init_fusion(instance))
1730                 goto fail_ioc_init;
1731
1732         megasas_display_intel_branding(instance);
1733         if (megasas_get_ctrl_info(instance)) {
1734                 dev_err(&instance->pdev->dev,
1735                         "Could not get controller info. Fail from %s %d\n",
1736                         __func__, __LINE__);
1737                 goto fail_ioc_init;
1738         }
1739
1740         instance->flag_ieee = 1;
1741         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1742         fusion->fast_path_io = 0;
1743
1744         if (megasas_allocate_raid_maps(instance))
1745                 goto fail_ioc_init;
1746
1747         if (!megasas_get_map_info(instance))
1748                 megasas_sync_map_info(instance);
1749
1750         return 0;
1751
1752 fail_ioc_init:
1753         megasas_free_cmds_fusion(instance);
1754 fail_alloc_cmds:
1755         megasas_free_cmds(instance);
1756 fail_alloc_mfi_cmds:
1757         megasas_free_ioc_init_cmd(instance);
1758         return 1;
1759 }
1760
1761 /**
1762  * megasas_fault_detect_work    -       Worker function of
1763  *                                      FW fault handling workqueue.
1764  */
1765 static void
1766 megasas_fault_detect_work(struct work_struct *work)
1767 {
1768         struct megasas_instance *instance =
1769                 container_of(work, struct megasas_instance,
1770                              fw_fault_work.work);
1771         u32 fw_state, dma_state, status;
1772
1773         /* Check the fw state */
1774         fw_state = instance->instancet->read_fw_status_reg(instance) &
1775                         MFI_STATE_MASK;
1776
1777         if (fw_state == MFI_STATE_FAULT) {
1778                 dma_state = instance->instancet->read_fw_status_reg(instance) &
1779                                 MFI_STATE_DMADONE;
1780                 /* Start collecting crash, if DMA bit is done */
1781                 if (instance->crash_dump_drv_support &&
1782                     instance->crash_dump_app_support && dma_state) {
1783                         megasas_fusion_crash_dump(instance);
1784                 } else {
1785                         if (instance->unload == 0) {
1786                                 status = megasas_reset_fusion(instance->host, 0);
1787                                 if (status != SUCCESS) {
1788                                         dev_err(&instance->pdev->dev,
1789                                                 "Failed from %s %d, do not re-arm timer\n",
1790                                                 __func__, __LINE__);
1791                                         return;
1792                                 }
1793                         }
1794                 }
1795         }
1796
1797         if (instance->fw_fault_work_q)
1798                 queue_delayed_work(instance->fw_fault_work_q,
1799                         &instance->fw_fault_work,
1800                         msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1801 }
1802
1803 int
1804 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1805 {
1806         /* Check if the Fault WQ is already started */
1807         if (instance->fw_fault_work_q)
1808                 return SUCCESS;
1809
1810         INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1811
1812         snprintf(instance->fault_handler_work_q_name,
1813                  sizeof(instance->fault_handler_work_q_name),
1814                  "poll_megasas%d_status", instance->host->host_no);
1815
1816         instance->fw_fault_work_q =
1817                 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1818         if (!instance->fw_fault_work_q) {
1819                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1820                         __func__, __LINE__);
1821                 return FAILED;
1822         }
1823
1824         queue_delayed_work(instance->fw_fault_work_q,
1825                            &instance->fw_fault_work,
1826                            msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1827
1828         return SUCCESS;
1829 }
1830
1831 void
1832 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
1833 {
1834         struct workqueue_struct *wq;
1835
1836         if (instance->fw_fault_work_q) {
1837                 wq = instance->fw_fault_work_q;
1838                 instance->fw_fault_work_q = NULL;
1839                 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
1840                         flush_workqueue(wq);
1841                 destroy_workqueue(wq);
1842         }
1843 }
1844
1845 /**
1846  * map_cmd_status -     Maps FW cmd status to OS cmd status
1847  * @cmd :               Pointer to cmd
1848  * @status :            status of cmd returned by FW
1849  * @ext_status :        ext status of cmd returned by FW
1850  */
1851
1852 void
1853 map_cmd_status(struct fusion_context *fusion,
1854                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1855                 u32 data_length, u8 *sense)
1856 {
1857         u8 cmd_type;
1858         int resid;
1859
1860         cmd_type = megasas_cmd_type(scmd);
1861         switch (status) {
1862
1863         case MFI_STAT_OK:
1864                 scmd->result = DID_OK << 16;
1865                 break;
1866
1867         case MFI_STAT_SCSI_IO_FAILED:
1868         case MFI_STAT_LD_INIT_IN_PROGRESS:
1869                 scmd->result = (DID_ERROR << 16) | ext_status;
1870                 break;
1871
1872         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1873
1874                 scmd->result = (DID_OK << 16) | ext_status;
1875                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1876                         memset(scmd->sense_buffer, 0,
1877                                SCSI_SENSE_BUFFERSIZE);
1878                         memcpy(scmd->sense_buffer, sense,
1879                                SCSI_SENSE_BUFFERSIZE);
1880                         scmd->result |= DRIVER_SENSE << 24;
1881                 }
1882
1883                 /*
1884                  * If the  IO request is partially completed, then MR FW will
1885                  * update "io_request->DataLength" field with actual number of
1886                  * bytes transferred.Driver will set residual bytes count in
1887                  * SCSI command structure.
1888                  */
1889                 resid = (scsi_bufflen(scmd) - data_length);
1890                 scsi_set_resid(scmd, resid);
1891
1892                 if (resid &&
1893                         ((cmd_type == READ_WRITE_LDIO) ||
1894                         (cmd_type == READ_WRITE_SYSPDIO)))
1895                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
1896                                 " requested/completed 0x%x/0x%x\n",
1897                                 status, scsi_bufflen(scmd), data_length);
1898                 break;
1899
1900         case MFI_STAT_LD_OFFLINE:
1901         case MFI_STAT_DEVICE_NOT_FOUND:
1902                 scmd->result = DID_BAD_TARGET << 16;
1903                 break;
1904         case MFI_STAT_CONFIG_SEQ_MISMATCH:
1905                 scmd->result = DID_IMM_RETRY << 16;
1906                 break;
1907         default:
1908                 scmd->result = DID_ERROR << 16;
1909                 break;
1910         }
1911 }
1912
1913 /**
1914  * megasas_is_prp_possible -
1915  * Checks if native NVMe PRPs can be built for the IO
1916  *
1917  * @instance:           Adapter soft state
1918  * @scmd:               SCSI command from the mid-layer
1919  * @sge_count:          scatter gather element count.
1920  *
1921  * Returns:             true: PRPs can be built
1922  *                      false: IEEE SGLs needs to be built
1923  */
1924 static bool
1925 megasas_is_prp_possible(struct megasas_instance *instance,
1926                         struct scsi_cmnd *scmd, int sge_count)
1927 {
1928         struct fusion_context *fusion;
1929         int i;
1930         u32 data_length = 0;
1931         struct scatterlist *sg_scmd;
1932         bool build_prp = false;
1933         u32 mr_nvme_pg_size;
1934
1935         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1936                                 MR_DEFAULT_NVME_PAGE_SIZE);
1937         fusion = instance->ctrl_context;
1938         data_length = scsi_bufflen(scmd);
1939         sg_scmd = scsi_sglist(scmd);
1940
1941         /*
1942          * NVMe uses one PRP for each page (or part of a page)
1943          * look at the data length - if 4 pages or less then IEEE is OK
1944          * if  > 5 pages then we need to build a native SGL
1945          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
1946          * if this first size in the page is >= the residual beyond 4 pages
1947          * then use IEEE, otherwise use native SGL
1948          */
1949
1950         if (data_length > (mr_nvme_pg_size * 5)) {
1951                 build_prp = true;
1952         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
1953                         (data_length <= (mr_nvme_pg_size * 5)))  {
1954                 /* check if 1st SG entry size is < residual beyond 4 pages */
1955                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
1956                         build_prp = true;
1957         }
1958
1959 /*
1960  * Below code detects gaps/holes in IO data buffers.
1961  * What does holes/gaps mean?
1962  * Any SGE except first one in a SGL starts at non NVME page size
1963  * aligned address OR Any SGE except last one in a SGL ends at
1964  * non NVME page size boundary.
1965  *
1966  * Driver has already informed block layer by setting boundary rules for
1967  * bio merging done at NVME page size boundary calling kernel API
1968  * blk_queue_virt_boundary inside slave_config.
1969  * Still there is possibility of IO coming with holes to driver because of
1970  * IO merging done by IO scheduler.
1971  *
1972  * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
1973  * IO scheduling so no IO merging.
1974  *
1975  * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
1976  * then sending IOs with holes.
1977  *
1978  * Though driver can request block layer to disable IO merging by calling-
1979  * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
1980  * user may tune sysfs parameter- nomerges again to 0 or 1.
1981  *
1982  * If in future IO scheduling is enabled with SCSI BLK MQ,
1983  * this algorithm to detect holes will be required in driver
1984  * for SCSI BLK MQ enabled case as well.
1985  *
1986  *
1987  */
1988         scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
1989                 if ((i != 0) && (i != (sge_count - 1))) {
1990                         if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
1991                             mega_mod64(sg_dma_address(sg_scmd),
1992                                        mr_nvme_pg_size)) {
1993                                 build_prp = false;
1994                                 atomic_inc(&instance->sge_holes_type1);
1995                                 break;
1996                         }
1997                 }
1998
1999                 if ((sge_count > 1) && (i == 0)) {
2000                         if ((mega_mod64((sg_dma_address(sg_scmd) +
2001                                         sg_dma_len(sg_scmd)),
2002                                         mr_nvme_pg_size))) {
2003                                 build_prp = false;
2004                                 atomic_inc(&instance->sge_holes_type2);
2005                                 break;
2006                         }
2007                 }
2008
2009                 if ((sge_count > 1) && (i == (sge_count - 1))) {
2010                         if (mega_mod64(sg_dma_address(sg_scmd),
2011                                        mr_nvme_pg_size)) {
2012                                 build_prp = false;
2013                                 atomic_inc(&instance->sge_holes_type3);
2014                                 break;
2015                         }
2016                 }
2017         }
2018
2019         return build_prp;
2020 }
2021
2022 /**
2023  * megasas_make_prp_nvme -
2024  * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
2025  *
2026  * @instance:           Adapter soft state
2027  * @scmd:               SCSI command from the mid-layer
2028  * @sgl_ptr:            SGL to be filled in
2029  * @cmd:                Fusion command frame
2030  * @sge_count:          scatter gather element count.
2031  *
2032  * Returns:             true: PRPs are built
2033  *                      false: IEEE SGLs needs to be built
2034  */
2035 static bool
2036 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
2037                       struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2038                       struct megasas_cmd_fusion *cmd, int sge_count)
2039 {
2040         int sge_len, offset, num_prp_in_chain = 0;
2041         struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
2042         u64 *ptr_sgl;
2043         dma_addr_t ptr_sgl_phys;
2044         u64 sge_addr;
2045         u32 page_mask, page_mask_result;
2046         struct scatterlist *sg_scmd;
2047         u32 first_prp_len;
2048         bool build_prp = false;
2049         int data_len = scsi_bufflen(scmd);
2050         struct fusion_context *fusion;
2051         u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2052                                         MR_DEFAULT_NVME_PAGE_SIZE);
2053
2054         fusion = instance->ctrl_context;
2055
2056         build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
2057
2058         if (!build_prp)
2059                 return false;
2060
2061         /*
2062          * Nvme has a very convoluted prp format.  One prp is required
2063          * for each page or partial page. Driver need to split up OS sg_list
2064          * entries if it is longer than one page or cross a page
2065          * boundary.  Driver also have to insert a PRP list pointer entry as
2066          * the last entry in each physical page of the PRP list.
2067          *
2068          * NOTE: The first PRP "entry" is actually placed in the first
2069          * SGL entry in the main message as IEEE 64 format.  The 2nd
2070          * entry in the main message is the chain element, and the rest
2071          * of the PRP entries are built in the contiguous pcie buffer.
2072          */
2073         page_mask = mr_nvme_pg_size - 1;
2074         ptr_sgl = (u64 *)cmd->sg_frame;
2075         ptr_sgl_phys = cmd->sg_frame_phys_addr;
2076         memset(ptr_sgl, 0, instance->max_chain_frame_sz);
2077
2078         /* Build chain frame element which holds all prps except first*/
2079         main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
2080             ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
2081
2082         main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2083         main_chain_element->NextChainOffset = 0;
2084         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2085                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
2086                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2087
2088         /* Build first prp, sge need not to be page aligned*/
2089         ptr_first_sgl = sgl_ptr;
2090         sg_scmd = scsi_sglist(scmd);
2091         sge_addr = sg_dma_address(sg_scmd);
2092         sge_len = sg_dma_len(sg_scmd);
2093
2094         offset = (u32)(sge_addr & page_mask);
2095         first_prp_len = mr_nvme_pg_size - offset;
2096
2097         ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2098         ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2099
2100         data_len -= first_prp_len;
2101
2102         if (sge_len > first_prp_len) {
2103                 sge_addr += first_prp_len;
2104                 sge_len -= first_prp_len;
2105         } else if (sge_len == first_prp_len) {
2106                 sg_scmd = sg_next(sg_scmd);
2107                 sge_addr = sg_dma_address(sg_scmd);
2108                 sge_len = sg_dma_len(sg_scmd);
2109         }
2110
2111         for (;;) {
2112                 offset = (u32)(sge_addr & page_mask);
2113
2114                 /* Put PRP pointer due to page boundary*/
2115                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2116                 if (unlikely(!page_mask_result)) {
2117                         scmd_printk(KERN_NOTICE,
2118                                     scmd, "page boundary ptr_sgl: 0x%p\n",
2119                                     ptr_sgl);
2120                         ptr_sgl_phys += 8;
2121                         *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2122                         ptr_sgl++;
2123                         num_prp_in_chain++;
2124                 }
2125
2126                 *ptr_sgl = cpu_to_le64(sge_addr);
2127                 ptr_sgl++;
2128                 ptr_sgl_phys += 8;
2129                 num_prp_in_chain++;
2130
2131                 sge_addr += mr_nvme_pg_size;
2132                 sge_len -= mr_nvme_pg_size;
2133                 data_len -= mr_nvme_pg_size;
2134
2135                 if (data_len <= 0)
2136                         break;
2137
2138                 if (sge_len > 0)
2139                         continue;
2140
2141                 sg_scmd = sg_next(sg_scmd);
2142                 sge_addr = sg_dma_address(sg_scmd);
2143                 sge_len = sg_dma_len(sg_scmd);
2144         }
2145
2146         main_chain_element->Length =
2147                         cpu_to_le32(num_prp_in_chain * sizeof(u64));
2148
2149         atomic_inc(&instance->prp_sgl);
2150         return build_prp;
2151 }
2152
2153 /**
2154  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
2155  * @instance:           Adapter soft state
2156  * @scp:                SCSI command from the mid-layer
2157  * @sgl_ptr:            SGL to be filled in
2158  * @cmd:                cmd we are working on
2159  * @sge_count           sge count
2160  *
2161  */
2162 static void
2163 megasas_make_sgl_fusion(struct megasas_instance *instance,
2164                         struct scsi_cmnd *scp,
2165                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2166                         struct megasas_cmd_fusion *cmd, int sge_count)
2167 {
2168         int i, sg_processed;
2169         struct scatterlist *os_sgl;
2170         struct fusion_context *fusion;
2171
2172         fusion = instance->ctrl_context;
2173
2174         if (instance->adapter_type >= INVADER_SERIES) {
2175                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2176                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2177                 sgl_ptr_end->Flags = 0;
2178         }
2179
2180         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2181                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2182                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2183                 sgl_ptr->Flags = 0;
2184                 if (instance->adapter_type >= INVADER_SERIES)
2185                         if (i == sge_count - 1)
2186                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2187                 sgl_ptr++;
2188                 sg_processed = i + 1;
2189
2190                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
2191                     (sge_count > fusion->max_sge_in_main_msg)) {
2192
2193                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2194                         if (instance->adapter_type >= INVADER_SERIES) {
2195                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2196                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2197                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2198                                         cmd->io_request->ChainOffset =
2199                                                 fusion->
2200                                                 chain_offset_io_request;
2201                                 else
2202                                         cmd->io_request->ChainOffset = 0;
2203                         } else
2204                                 cmd->io_request->ChainOffset =
2205                                         fusion->chain_offset_io_request;
2206
2207                         sg_chain = sgl_ptr;
2208                         /* Prepare chain element */
2209                         sg_chain->NextChainOffset = 0;
2210                         if (instance->adapter_type >= INVADER_SERIES)
2211                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2212                         else
2213                                 sg_chain->Flags =
2214                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2215                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2216                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2217                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2218
2219                         sgl_ptr =
2220                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2221                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2222                 }
2223         }
2224         atomic_inc(&instance->ieee_sgl);
2225 }
2226
2227 /**
2228  * megasas_make_sgl -   Build Scatter Gather List(SGLs)
2229  * @scp:                SCSI command pointer
2230  * @instance:           Soft instance of controller
2231  * @cmd:                Fusion command pointer
2232  *
2233  * This function will build sgls based on device type.
2234  * For nvme drives, there is different way of building sgls in nvme native
2235  * format- PRPs(Physical Region Page).
2236  *
2237  * Returns the number of sg lists actually used, zero if the sg lists
2238  * is NULL, or -ENOMEM if the mapping failed
2239  */
2240 static
2241 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2242                      struct megasas_cmd_fusion *cmd)
2243 {
2244         int sge_count;
2245         bool build_prp = false;
2246         struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2247
2248         sge_count = scsi_dma_map(scp);
2249
2250         if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2251                 return sge_count;
2252
2253         sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2254         if ((le16_to_cpu(cmd->io_request->IoFlags) &
2255             MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2256             (cmd->pd_interface == NVME_PD))
2257                 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2258                                                   cmd, sge_count);
2259
2260         if (!build_prp)
2261                 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2262                                         cmd, sge_count);
2263
2264         return sge_count;
2265 }
2266
2267 /**
2268  * megasas_set_pd_lba - Sets PD LBA
2269  * @cdb:                CDB
2270  * @cdb_len:            cdb length
2271  * @start_blk:          Start block of IO
2272  *
2273  * Used to set the PD LBA in CDB for FP IOs
2274  */
2275 void
2276 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2277                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2278                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2279 {
2280         struct MR_LD_RAID *raid;
2281         u16 ld;
2282         u64 start_blk = io_info->pdBlock;
2283         u8 *cdb = io_request->CDB.CDB32;
2284         u32 num_blocks = io_info->numBlocks;
2285         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2286
2287         /* Check if T10 PI (DIF) is enabled for this LD */
2288         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2289         raid = MR_LdRaidGet(ld, local_map_ptr);
2290         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2291                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2292                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2293                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
2294
2295                 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2296                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2297                 else
2298                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2299                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2300
2301                 /* LBA */
2302                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2303                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2304                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2305                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2306                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2307                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2308                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2309                 cdb[19] = (u8)(start_blk & 0xff);
2310
2311                 /* Logical block reference tag */
2312                 io_request->CDB.EEDP32.PrimaryReferenceTag =
2313                         cpu_to_be32(ref_tag);
2314                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2315                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2316
2317                 /* Transfer length */
2318                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2319                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2320                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2321                 cdb[31] = (u8)(num_blocks & 0xff);
2322
2323                 /* set SCSI IO EEDPFlags */
2324                 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2325                         io_request->EEDPFlags = cpu_to_le16(
2326                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
2327                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2328                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2329                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2330                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2331                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2332                 } else {
2333                         io_request->EEDPFlags = cpu_to_le16(
2334                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2335                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2336                 }
2337                 io_request->Control |= cpu_to_le32((0x4 << 26));
2338                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2339         } else {
2340                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2341                 if (((cdb_len == 12) || (cdb_len == 16)) &&
2342                     (start_blk <= 0xffffffff)) {
2343                         if (cdb_len == 16) {
2344                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2345                                 flagvals = cdb[1];
2346                                 groupnum = cdb[14];
2347                                 control = cdb[15];
2348                         } else {
2349                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2350                                 flagvals = cdb[1];
2351                                 groupnum = cdb[10];
2352                                 control = cdb[11];
2353                         }
2354
2355                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2356
2357                         cdb[0] = opcode;
2358                         cdb[1] = flagvals;
2359                         cdb[6] = groupnum;
2360                         cdb[9] = control;
2361
2362                         /* Transfer length */
2363                         cdb[8] = (u8)(num_blocks & 0xff);
2364                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2365
2366                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2367                         cdb_len = 10;
2368                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2369                         /* Convert to 16 byte CDB for large LBA's */
2370                         switch (cdb_len) {
2371                         case 6:
2372                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2373                                 control = cdb[5];
2374                                 break;
2375                         case 10:
2376                                 opcode =
2377                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
2378                                 flagvals = cdb[1];
2379                                 groupnum = cdb[6];
2380                                 control = cdb[9];
2381                                 break;
2382                         case 12:
2383                                 opcode =
2384                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
2385                                 flagvals = cdb[1];
2386                                 groupnum = cdb[10];
2387                                 control = cdb[11];
2388                                 break;
2389                         }
2390
2391                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2392
2393                         cdb[0] = opcode;
2394                         cdb[1] = flagvals;
2395                         cdb[14] = groupnum;
2396                         cdb[15] = control;
2397
2398                         /* Transfer length */
2399                         cdb[13] = (u8)(num_blocks & 0xff);
2400                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2401                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2402                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2403
2404                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2405                         cdb_len = 16;
2406                 }
2407
2408                 /* Normal case, just load LBA here */
2409                 switch (cdb_len) {
2410                 case 6:
2411                 {
2412                         u8 val = cdb[1] & 0xE0;
2413                         cdb[3] = (u8)(start_blk & 0xff);
2414                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
2415                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2416                         break;
2417                 }
2418                 case 10:
2419                         cdb[5] = (u8)(start_blk & 0xff);
2420                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2421                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2422                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2423                         break;
2424                 case 12:
2425                         cdb[5]    = (u8)(start_blk & 0xff);
2426                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2427                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2428                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2429                         break;
2430                 case 16:
2431                         cdb[9]    = (u8)(start_blk & 0xff);
2432                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2433                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2434                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2435                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2436                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2437                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2438                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2439                         break;
2440                 }
2441         }
2442 }
2443
2444 /**
2445  * megasas_stream_detect -      stream detection on read and and write IOs
2446  * @instance:           Adapter soft state
2447  * @cmd:                    Command to be prepared
2448  * @io_info:            IO Request info
2449  *
2450  */
2451
2452 /** stream detection on read and and write IOs */
2453 static void megasas_stream_detect(struct megasas_instance *instance,
2454                                   struct megasas_cmd_fusion *cmd,
2455                                   struct IO_REQUEST_INFO *io_info)
2456 {
2457         struct fusion_context *fusion = instance->ctrl_context;
2458         u32 device_id = io_info->ldTgtId;
2459         struct LD_STREAM_DETECT *current_ld_sd
2460                 = fusion->stream_detect_by_ld[device_id];
2461         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2462         u32 shifted_values, unshifted_values;
2463         u32 index_value_mask, shifted_values_mask;
2464         int i;
2465         bool is_read_ahead = false;
2466         struct STREAM_DETECT *current_sd;
2467         /* find possible stream */
2468         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2469                 stream_num = (*track_stream >>
2470                         (i * BITS_PER_INDEX_STREAM)) &
2471                         STREAM_MASK;
2472                 current_sd = &current_ld_sd->stream_track[stream_num];
2473                 /* if we found a stream, update the raid
2474                  *  context and also update the mruBitMap
2475                  */
2476                 /*      boundary condition */
2477                 if ((current_sd->next_seq_lba) &&
2478                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2479                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2480                     (current_sd->is_read == io_info->isRead)) {
2481
2482                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2483                             ((!io_info->isRead) || (!is_read_ahead)))
2484                                 /*
2485                                  * Once the API availible we need to change this.
2486                                  * At this point we are not allowing any gap
2487                                  */
2488                                 continue;
2489
2490                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2491                         current_sd->next_seq_lba =
2492                         io_info->ldStartBlock + io_info->numBlocks;
2493                         /*
2494                          *      update the mruBitMap LRU
2495                          */
2496                         shifted_values_mask =
2497                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2498                         shifted_values = ((*track_stream & shifted_values_mask)
2499                                                 << BITS_PER_INDEX_STREAM);
2500                         index_value_mask =
2501                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2502                         unshifted_values =
2503                                 *track_stream & ~(shifted_values_mask |
2504                                 index_value_mask);
2505                         *track_stream =
2506                                 unshifted_values | shifted_values | stream_num;
2507                         return;
2508                 }
2509         }
2510         /*
2511          * if we did not find any stream, create a new one
2512          * from the least recently used
2513          */
2514         stream_num = (*track_stream >>
2515                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2516                 STREAM_MASK;
2517         current_sd = &current_ld_sd->stream_track[stream_num];
2518         current_sd->is_read = io_info->isRead;
2519         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2520         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2521         return;
2522 }
2523
2524 /**
2525  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2526  * affinity (cpu of the controller) and raid_flags in the raid context
2527  * based on IO type.
2528  *
2529  * @praid_context:      IO RAID context
2530  * @raid:               LD raid map
2531  * @fp_possible:        Is fast path possible?
2532  * @is_read:            Is read IO?
2533  *
2534  */
2535 static void
2536 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
2537                                   struct MR_LD_RAID *raid, bool fp_possible,
2538                                   u8 is_read, u32 scsi_buff_len)
2539 {
2540         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2541         struct RAID_CONTEXT_G35 *rctx_g35;
2542
2543         rctx_g35 = &praid_context->raid_context_g35;
2544         if (fp_possible) {
2545                 if (is_read) {
2546                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2547                             (raid->cpuAffinity.pdRead.cpu1))
2548                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2549                         else if (raid->cpuAffinity.pdRead.cpu1)
2550                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2551                 } else {
2552                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2553                             (raid->cpuAffinity.pdWrite.cpu1))
2554                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2555                         else if (raid->cpuAffinity.pdWrite.cpu1)
2556                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2557                         /* Fast path cache by pass capable R0/R1 VD */
2558                         if ((raid->level <= 1) &&
2559                             (raid->capability.fp_cache_bypass_capable)) {
2560                                 rctx_g35->routing_flags |=
2561                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2562                                 rctx_g35->raid_flags =
2563                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2564                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2565                         }
2566                 }
2567         } else {
2568                 if (is_read) {
2569                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2570                             (raid->cpuAffinity.ldRead.cpu1))
2571                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2572                         else if (raid->cpuAffinity.ldRead.cpu1)
2573                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2574                 } else {
2575                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2576                             (raid->cpuAffinity.ldWrite.cpu1))
2577                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2578                         else if (raid->cpuAffinity.ldWrite.cpu1)
2579                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2580
2581                         if (is_stream_detected(rctx_g35) &&
2582                             ((raid->level == 5) || (raid->level == 6)) &&
2583                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2584                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2585                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2586                 }
2587         }
2588
2589         rctx_g35->routing_flags |=
2590                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2591
2592         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2593          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2594          * IO Subtype is not bitmap.
2595          */
2596         if ((raid->level == 1) && (!is_read)) {
2597                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2598                         praid_context->raid_context_g35.raid_flags =
2599                                 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2600                                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2601         }
2602 }
2603
2604 /**
2605  * megasas_build_ldio_fusion -  Prepares IOs to devices
2606  * @instance:           Adapter soft state
2607  * @scp:                SCSI command
2608  * @cmd:                Command to be prepared
2609  *
2610  * Prepares the io_request and chain elements (sg_frame) for IO
2611  * The IO can be for PD (Fast Path) or LD
2612  */
2613 void
2614 megasas_build_ldio_fusion(struct megasas_instance *instance,
2615                           struct scsi_cmnd *scp,
2616                           struct megasas_cmd_fusion *cmd)
2617 {
2618         bool fp_possible;
2619         u16 ld;
2620         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2621         u32 scsi_buff_len;
2622         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2623         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2624         struct IO_REQUEST_INFO io_info;
2625         struct fusion_context *fusion;
2626         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2627         u8 *raidLUN;
2628         unsigned long spinlock_flags;
2629         struct MR_LD_RAID *raid = NULL;
2630         struct MR_PRIV_DEVICE *mrdev_priv;
2631         struct RAID_CONTEXT *rctx;
2632         struct RAID_CONTEXT_G35 *rctx_g35;
2633
2634         device_id = MEGASAS_DEV_INDEX(scp);
2635
2636         fusion = instance->ctrl_context;
2637
2638         io_request = cmd->io_request;
2639         rctx = &io_request->RaidContext.raid_context;
2640         rctx_g35 = &io_request->RaidContext.raid_context_g35;
2641
2642         rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2643         rctx->status = 0;
2644         rctx->ex_status = 0;
2645
2646         req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2647
2648         start_lba_lo = 0;
2649         start_lba_hi = 0;
2650         fp_possible = false;
2651
2652         /*
2653          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2654          */
2655         if (scp->cmd_len == 6) {
2656                 datalength = (u32) scp->cmnd[4];
2657                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2658                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2659
2660                 start_lba_lo &= 0x1FFFFF;
2661         }
2662
2663         /*
2664          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2665          */
2666         else if (scp->cmd_len == 10) {
2667                 datalength = (u32) scp->cmnd[8] |
2668                         ((u32) scp->cmnd[7] << 8);
2669                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2670                         ((u32) scp->cmnd[3] << 16) |
2671                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2672         }
2673
2674         /*
2675          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2676          */
2677         else if (scp->cmd_len == 12) {
2678                 datalength = ((u32) scp->cmnd[6] << 24) |
2679                         ((u32) scp->cmnd[7] << 16) |
2680                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2681                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2682                         ((u32) scp->cmnd[3] << 16) |
2683                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2684         }
2685
2686         /*
2687          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2688          */
2689         else if (scp->cmd_len == 16) {
2690                 datalength = ((u32) scp->cmnd[10] << 24) |
2691                         ((u32) scp->cmnd[11] << 16) |
2692                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2693                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2694                         ((u32) scp->cmnd[7] << 16) |
2695                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2696
2697                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2698                         ((u32) scp->cmnd[3] << 16) |
2699                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2700         }
2701
2702         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2703         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2704         io_info.numBlocks = datalength;
2705         io_info.ldTgtId = device_id;
2706         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2707         scsi_buff_len = scsi_bufflen(scp);
2708         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2709
2710         if (scp->sc_data_direction == DMA_FROM_DEVICE)
2711                 io_info.isRead = 1;
2712
2713         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2714         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2715
2716         if (ld < instance->fw_supported_vd_count)
2717                 raid = MR_LdRaidGet(ld, local_map_ptr);
2718
2719         if (!raid || (!fusion->fast_path_io)) {
2720                 rctx->reg_lock_flags  = 0;
2721                 fp_possible = false;
2722         } else {
2723                 if (MR_BuildRaidContext(instance, &io_info, rctx,
2724                                         local_map_ptr, &raidLUN))
2725                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2726         }
2727
2728         cmd->request_desc->SCSIIO.MSIxIndex =
2729                 instance->reply_map[raw_smp_processor_id()];
2730
2731         if (instance->adapter_type >= VENTURA_SERIES) {
2732                 /* FP for Optimal raid level 1.
2733                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2734                  * are built by the driver as LD I/Os.
2735                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2736                  * (there is never a reason to process these as buffered writes)
2737                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2738                  * with the SLD bit asserted.
2739                  */
2740                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2741                         mrdev_priv = scp->device->hostdata;
2742
2743                         if (atomic_inc_return(&instance->fw_outstanding) >
2744                                 (instance->host->can_queue)) {
2745                                 fp_possible = false;
2746                                 atomic_dec(&instance->fw_outstanding);
2747                         } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2748                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) {
2749                                 fp_possible = false;
2750                                 atomic_dec(&instance->fw_outstanding);
2751                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2752                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2753                                                    instance->r1_ldio_hint_default);
2754                         }
2755                 }
2756
2757                 if (!fp_possible ||
2758                     (io_info.isRead && io_info.ra_capable)) {
2759                         spin_lock_irqsave(&instance->stream_lock,
2760                                           spinlock_flags);
2761                         megasas_stream_detect(instance, cmd, &io_info);
2762                         spin_unlock_irqrestore(&instance->stream_lock,
2763                                                spinlock_flags);
2764                         /* In ventura if stream detected for a read and it is
2765                          * read ahead capable make this IO as LDIO
2766                          */
2767                         if (is_stream_detected(rctx_g35))
2768                                 fp_possible = false;
2769                 }
2770
2771                 /* If raid is NULL, set CPU affinity to default CPU0 */
2772                 if (raid)
2773                         megasas_set_raidflag_cpu_affinity(&io_request->RaidContext,
2774                                 raid, fp_possible, io_info.isRead,
2775                                 scsi_buff_len);
2776                 else
2777                         rctx_g35->routing_flags |=
2778                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2779         }
2780
2781         if (fp_possible) {
2782                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2783                                    local_map_ptr, start_lba_lo);
2784                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2785                 cmd->request_desc->SCSIIO.RequestFlags =
2786                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2787                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2788                 if (instance->adapter_type == INVADER_SERIES) {
2789                         if (rctx->reg_lock_flags == REGION_TYPE_UNUSED)
2790                                 cmd->request_desc->SCSIIO.RequestFlags =
2791                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2792                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2793                         rctx->type = MPI2_TYPE_CUDA;
2794                         rctx->nseg = 0x1;
2795                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2796                         rctx->reg_lock_flags |=
2797                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2798                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2799                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2800                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2801                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2802                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2803                         io_request->IoFlags |=
2804                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2805                 }
2806                 if (fusion->load_balance_info &&
2807                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2808                         (io_info.isRead)) {
2809                         io_info.devHandle =
2810                                 get_updated_dev_handle(instance,
2811                                         &fusion->load_balance_info[device_id],
2812                                         &io_info, local_map_ptr);
2813                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2814                         cmd->pd_r1_lb = io_info.pd_after_lb;
2815                         if (instance->adapter_type >= VENTURA_SERIES)
2816                                 rctx_g35->span_arm = io_info.span_arm;
2817                         else
2818                                 rctx->span_arm = io_info.span_arm;
2819
2820                 } else
2821                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2822
2823                 if (instance->adapter_type >= VENTURA_SERIES)
2824                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2825                 else
2826                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2827
2828                 if ((raidLUN[0] == 1) &&
2829                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2830                         instance->dev_handle = !(instance->dev_handle);
2831                         io_info.devHandle =
2832                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2833                 }
2834
2835                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2836                 io_request->DevHandle = io_info.devHandle;
2837                 cmd->pd_interface = io_info.pd_interface;
2838                 /* populate the LUN field */
2839                 memcpy(io_request->LUN, raidLUN, 8);
2840         } else {
2841                 rctx->timeout_value =
2842                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2843                 cmd->request_desc->SCSIIO.RequestFlags =
2844                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2845                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2846                 if (instance->adapter_type == INVADER_SERIES) {
2847                         if (io_info.do_fp_rlbypass ||
2848                         (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2849                                 cmd->request_desc->SCSIIO.RequestFlags =
2850                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2851                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2852                         rctx->type = MPI2_TYPE_CUDA;
2853                         rctx->reg_lock_flags |=
2854                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2855                                         MR_RL_FLAGS_SEQ_NUM_ENABLE);
2856                         rctx->nseg = 0x1;
2857                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2858                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2859                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2860                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2861                 }
2862                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2863                 io_request->DevHandle = cpu_to_le16(device_id);
2864
2865         } /* Not FP */
2866 }
2867
2868 /**
2869  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2870  * @instance:           Adapter soft state
2871  * @scp:                SCSI command
2872  * @cmd:                Command to be prepared
2873  *
2874  * Prepares the io_request frame for non-rw io cmds for vd.
2875  */
2876 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2877                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2878 {
2879         u32 device_id;
2880         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2881         u16 ld;
2882         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2883         struct fusion_context *fusion = instance->ctrl_context;
2884         u8                          span, physArm;
2885         __le16                      devHandle;
2886         u32                         arRef, pd;
2887         struct MR_LD_RAID                  *raid;
2888         struct RAID_CONTEXT                *pRAID_Context;
2889         u8 fp_possible = 1;
2890
2891         io_request = cmd->io_request;
2892         device_id = MEGASAS_DEV_INDEX(scmd);
2893         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2894         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2895         /* get RAID_Context pointer */
2896         pRAID_Context = &io_request->RaidContext.raid_context;
2897         /* Check with FW team */
2898         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2899         pRAID_Context->reg_lock_row_lba    = 0;
2900         pRAID_Context->reg_lock_length    = 0;
2901
2902         if (fusion->fast_path_io && (
2903                 device_id < instance->fw_supported_vd_count)) {
2904
2905                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2906                 if (ld >= instance->fw_supported_vd_count - 1)
2907                         fp_possible = 0;
2908                 else {
2909                         raid = MR_LdRaidGet(ld, local_map_ptr);
2910                         if (!(raid->capability.fpNonRWCapable))
2911                                 fp_possible = 0;
2912                 }
2913         } else
2914                 fp_possible = 0;
2915
2916         if (!fp_possible) {
2917                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2918                 io_request->DevHandle = cpu_to_le16(device_id);
2919                 io_request->LUN[1] = scmd->device->lun;
2920                 pRAID_Context->timeout_value =
2921                         cpu_to_le16 (scmd->request->timeout / HZ);
2922                 cmd->request_desc->SCSIIO.RequestFlags =
2923                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2924                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2925         } else {
2926
2927                 /* set RAID context values */
2928                 pRAID_Context->config_seq_num = raid->seqNum;
2929                 if (instance->adapter_type < VENTURA_SERIES)
2930                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
2931                 pRAID_Context->timeout_value =
2932                         cpu_to_le16(raid->fpIoTimeoutForLd);
2933
2934                 /* get the DevHandle for the PD (since this is
2935                    fpNonRWCapable, this is a single disk RAID0) */
2936                 span = physArm = 0;
2937                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
2938                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
2939                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
2940
2941                 /* build request descriptor */
2942                 cmd->request_desc->SCSIIO.RequestFlags =
2943                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2944                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2945                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
2946
2947                 /* populate the LUN field */
2948                 memcpy(io_request->LUN, raid->LUN, 8);
2949
2950                 /* build the raidScsiIO structure */
2951                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2952                 io_request->DevHandle = devHandle;
2953         }
2954 }
2955
2956 /**
2957  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
2958  * @instance:           Adapter soft state
2959  * @scp:                SCSI command
2960  * @cmd:                Command to be prepared
2961  * @fp_possible:        parameter to detect fast path or firmware path io.
2962  *
2963  * Prepares the io_request frame for rw/non-rw io cmds for syspds
2964  */
2965 static void
2966 megasas_build_syspd_fusion(struct megasas_instance *instance,
2967         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
2968         bool fp_possible)
2969 {
2970         u32 device_id;
2971         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2972         u16 pd_index = 0;
2973         u16 os_timeout_value;
2974         u16 timeout_limit;
2975         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2976         struct RAID_CONTEXT     *pRAID_Context;
2977         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
2978         struct MR_PRIV_DEVICE *mr_device_priv_data;
2979         struct fusion_context *fusion = instance->ctrl_context;
2980         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
2981
2982         device_id = MEGASAS_DEV_INDEX(scmd);
2983         pd_index = MEGASAS_PD_INDEX(scmd);
2984         os_timeout_value = scmd->request->timeout / HZ;
2985         mr_device_priv_data = scmd->device->hostdata;
2986         cmd->pd_interface = mr_device_priv_data->interface_type;
2987
2988         io_request = cmd->io_request;
2989         /* get RAID_Context pointer */
2990         pRAID_Context = &io_request->RaidContext.raid_context;
2991         pRAID_Context->reg_lock_flags = 0;
2992         pRAID_Context->reg_lock_row_lba = 0;
2993         pRAID_Context->reg_lock_length = 0;
2994         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2995         io_request->LUN[1] = scmd->device->lun;
2996         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
2997                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
2998
2999         /* If FW supports PD sequence number */
3000         if (instance->use_seqnum_jbod_fp &&
3001                 instance->pd_list[pd_index].driveType == TYPE_DISK) {
3002                 /* TgtId must be incremented by 255 as jbod seq number is index
3003                  * below raid map
3004                  */
3005                  /* More than 256 PD/JBOD support for Ventura */
3006                 if (instance->support_morethan256jbod)
3007                         pRAID_Context->virtual_disk_tgt_id =
3008                                 pd_sync->seq[pd_index].pd_target_id;
3009                 else
3010                         pRAID_Context->virtual_disk_tgt_id =
3011                                 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
3012                 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum;
3013                 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
3014                 if (instance->adapter_type >= VENTURA_SERIES) {
3015                         io_request->RaidContext.raid_context_g35.routing_flags |=
3016                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3017                         io_request->RaidContext.raid_context_g35.nseg_type |=
3018                                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
3019                         io_request->RaidContext.raid_context_g35.nseg_type |=
3020                                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3021                 } else {
3022                         pRAID_Context->type = MPI2_TYPE_CUDA;
3023                         pRAID_Context->nseg = 0x1;
3024                         pRAID_Context->reg_lock_flags |=
3025                                 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3026                 }
3027         } else if (fusion->fast_path_io) {
3028                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3029                 pRAID_Context->config_seq_num = 0;
3030                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
3031                 io_request->DevHandle =
3032                         local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3033         } else {
3034                 /* Want to send all IO via FW path */
3035                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3036                 pRAID_Context->config_seq_num = 0;
3037                 io_request->DevHandle = cpu_to_le16(0xFFFF);
3038         }
3039
3040         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3041
3042         cmd->request_desc->SCSIIO.MSIxIndex =
3043                 instance->reply_map[raw_smp_processor_id()];
3044
3045         if (!fp_possible) {
3046                 /* system pd firmware path */
3047                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3048                 cmd->request_desc->SCSIIO.RequestFlags =
3049                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3050                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3051                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3052                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3053         } else {
3054                 if (os_timeout_value)
3055                         os_timeout_value++;
3056
3057                 /* system pd Fast Path */
3058                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3059                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3060                                 255 : 0xFFFF;
3061                 pRAID_Context->timeout_value =
3062                         cpu_to_le16((os_timeout_value > timeout_limit) ?
3063                         timeout_limit : os_timeout_value);
3064                 if (instance->adapter_type >= INVADER_SERIES)
3065                         io_request->IoFlags |=
3066                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3067
3068                 cmd->request_desc->SCSIIO.RequestFlags =
3069                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3070                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3071         }
3072 }
3073
3074 /**
3075  * megasas_build_io_fusion -    Prepares IOs to devices
3076  * @instance:           Adapter soft state
3077  * @scp:                SCSI command
3078  * @cmd:                Command to be prepared
3079  *
3080  * Invokes helper functions to prepare request frames
3081  * and sets flags appropriate for IO/Non-IO cmd
3082  */
3083 int
3084 megasas_build_io_fusion(struct megasas_instance *instance,
3085                         struct scsi_cmnd *scp,
3086                         struct megasas_cmd_fusion *cmd)
3087 {
3088         int sge_count;
3089         u8  cmd_type;
3090         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3091         struct MR_PRIV_DEVICE *mr_device_priv_data;
3092         mr_device_priv_data = scp->device->hostdata;
3093
3094         /* Zero out some fields so they don't get reused */
3095         memset(io_request->LUN, 0x0, 8);
3096         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3097         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3098         io_request->EEDPFlags = 0;
3099         io_request->Control = 0;
3100         io_request->EEDPBlockSize = 0;
3101         io_request->ChainOffset = 0;
3102         io_request->RaidContext.raid_context.raid_flags = 0;
3103         io_request->RaidContext.raid_context.type = 0;
3104         io_request->RaidContext.raid_context.nseg = 0;
3105
3106         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3107         /*
3108          * Just the CDB length,rest of the Flags are zero
3109          * This will be modified for FP in build_ldio_fusion
3110          */
3111         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3112
3113         switch (cmd_type = megasas_cmd_type(scp)) {
3114         case READ_WRITE_LDIO:
3115                 megasas_build_ldio_fusion(instance, scp, cmd);
3116                 break;
3117         case NON_READ_WRITE_LDIO:
3118                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3119                 break;
3120         case READ_WRITE_SYSPDIO:
3121                 megasas_build_syspd_fusion(instance, scp, cmd, true);
3122                 break;
3123         case NON_READ_WRITE_SYSPDIO:
3124                 if (instance->secure_jbod_support ||
3125                     mr_device_priv_data->is_tm_capable)
3126                         megasas_build_syspd_fusion(instance, scp, cmd, false);
3127                 else
3128                         megasas_build_syspd_fusion(instance, scp, cmd, true);
3129                 break;
3130         default:
3131                 break;
3132         }
3133
3134         /*
3135          * Construct SGL
3136          */
3137
3138         sge_count = megasas_make_sgl(instance, scp, cmd);
3139
3140         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3141                 dev_err(&instance->pdev->dev,
3142                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
3143                         __func__, __LINE__, sge_count, instance->max_num_sge);
3144                 return 1;
3145         }
3146
3147         if (instance->adapter_type >= VENTURA_SERIES) {
3148                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3149                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3150                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3151         } else {
3152                 /* numSGE store lower 8 bit of sge_count.
3153                  * numSGEExt store higher 8 bit of sge_count
3154                  */
3155                 io_request->RaidContext.raid_context.num_sge = sge_count;
3156                 io_request->RaidContext.raid_context.num_sge_ext =
3157                         (u8)(sge_count >> 8);
3158         }
3159
3160         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3161
3162         if (scp->sc_data_direction == DMA_TO_DEVICE)
3163                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3164         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3165                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3166
3167         io_request->SGLOffset0 =
3168                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3169
3170         io_request->SenseBufferLowAddress =
3171                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3172         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3173
3174         cmd->scmd = scp;
3175         scp->SCp.ptr = (char *)cmd;
3176
3177         return 0;
3178 }
3179
3180 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3181 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3182 {
3183         u8 *p;
3184         struct fusion_context *fusion;
3185
3186         fusion = instance->ctrl_context;
3187         p = fusion->req_frames_desc +
3188                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3189
3190         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3191 }
3192
3193
3194 /* megasas_prepate_secondRaid1_IO
3195  *  It prepares the raid 1 second IO
3196  */
3197 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3198                             struct megasas_cmd_fusion *cmd,
3199                             struct megasas_cmd_fusion *r1_cmd)
3200 {
3201         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3202         struct fusion_context *fusion;
3203         fusion = instance->ctrl_context;
3204         req_desc = cmd->request_desc;
3205         /* copy the io request frame as well as 8 SGEs data for r1 command*/
3206         memcpy(r1_cmd->io_request, cmd->io_request,
3207                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3208         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3209                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3210         /*sense buffer is different for r1 command*/
3211         r1_cmd->io_request->SenseBufferLowAddress =
3212                         cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3213         r1_cmd->scmd = cmd->scmd;
3214         req_desc2 = megasas_get_request_descriptor(instance,
3215                                                    (r1_cmd->index - 1));
3216         req_desc2->Words = 0;
3217         r1_cmd->request_desc = req_desc2;
3218         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3219         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3220         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3221         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3222         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3223         cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3224                         cpu_to_le16(r1_cmd->index);
3225         r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3226                         cpu_to_le16(cmd->index);
3227         /*MSIxIndex of both commands request descriptors should be same*/
3228         r1_cmd->request_desc->SCSIIO.MSIxIndex =
3229                         cmd->request_desc->SCSIIO.MSIxIndex;
3230         /*span arm is different for r1 cmd*/
3231         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3232                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3233 }
3234
3235 /**
3236  * megasas_build_and_issue_cmd_fusion -Main routine for building and
3237  *                                     issuing non IOCTL cmd
3238  * @instance:                   Adapter soft state
3239  * @scmd:                       pointer to scsi cmd from OS
3240  */
3241 static u32
3242 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3243                                    struct scsi_cmnd *scmd)
3244 {
3245         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3246         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3247         u32 index;
3248         struct fusion_context *fusion;
3249
3250         fusion = instance->ctrl_context;
3251
3252         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3253                 instance->ldio_threshold &&
3254                 (atomic_inc_return(&instance->ldio_outstanding) >
3255                 instance->ldio_threshold)) {
3256                 atomic_dec(&instance->ldio_outstanding);
3257                 return SCSI_MLQUEUE_DEVICE_BUSY;
3258         }
3259
3260         if (atomic_inc_return(&instance->fw_outstanding) >
3261                         instance->host->can_queue) {
3262                 atomic_dec(&instance->fw_outstanding);
3263                 return SCSI_MLQUEUE_HOST_BUSY;
3264         }
3265
3266         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3267
3268         if (!cmd) {
3269                 atomic_dec(&instance->fw_outstanding);
3270                 return SCSI_MLQUEUE_HOST_BUSY;
3271         }
3272
3273         index = cmd->index;
3274
3275         req_desc = megasas_get_request_descriptor(instance, index-1);
3276
3277         req_desc->Words = 0;
3278         cmd->request_desc = req_desc;
3279
3280         if (megasas_build_io_fusion(instance, scmd, cmd)) {
3281                 megasas_return_cmd_fusion(instance, cmd);
3282                 dev_err(&instance->pdev->dev, "Error building command\n");
3283                 cmd->request_desc = NULL;
3284                 atomic_dec(&instance->fw_outstanding);
3285                 return SCSI_MLQUEUE_HOST_BUSY;
3286         }
3287
3288         req_desc = cmd->request_desc;
3289         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3290
3291         if (cmd->io_request->ChainOffset != 0 &&
3292             cmd->io_request->ChainOffset != 0xF)
3293                 dev_err(&instance->pdev->dev, "The chain offset value is not "
3294                        "correct : %x\n", cmd->io_request->ChainOffset);
3295         /*
3296          *      if it is raid 1/10 fp write capable.
3297          *      try to get second command from pool and construct it.
3298          *      From FW, it has confirmed that lba values of two PDs
3299          *      corresponds to single R1/10 LD are always same
3300          *
3301          */
3302         /*      driver side count always should be less than max_fw_cmds
3303          *      to get new command
3304          */
3305         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3306                 r1_cmd = megasas_get_cmd_fusion(instance,
3307                                 (scmd->request->tag + instance->max_fw_cmds));
3308                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3309         }
3310
3311
3312         /*
3313          * Issue the command to the FW
3314          */
3315
3316         megasas_fire_cmd_fusion(instance, req_desc);
3317
3318         if (r1_cmd)
3319                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3320
3321
3322         return 0;
3323 }
3324
3325 /**
3326  * megasas_complete_r1_command -
3327  * completes R1 FP write commands which has valid peer smid
3328  * @instance:                   Adapter soft state
3329  * @cmd_fusion:                 MPT command frame
3330  *
3331  */
3332 static inline void
3333 megasas_complete_r1_command(struct megasas_instance *instance,
3334                             struct megasas_cmd_fusion *cmd)
3335 {
3336         u8 *sense, status, ex_status;
3337         u32 data_length;
3338         u16 peer_smid;
3339         struct fusion_context *fusion;
3340         struct megasas_cmd_fusion *r1_cmd = NULL;
3341         struct scsi_cmnd *scmd_local = NULL;
3342         struct RAID_CONTEXT_G35 *rctx_g35;
3343
3344         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3345         fusion = instance->ctrl_context;
3346         peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid);
3347
3348         r1_cmd = fusion->cmd_list[peer_smid - 1];
3349         scmd_local = cmd->scmd;
3350         status = rctx_g35->status;
3351         ex_status = rctx_g35->ex_status;
3352         data_length = cmd->io_request->DataLength;
3353         sense = cmd->sense;
3354
3355         cmd->cmd_completed = true;
3356
3357         /* Check if peer command is completed or not*/
3358         if (r1_cmd->cmd_completed) {
3359                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3360                 if (rctx_g35->status != MFI_STAT_OK) {
3361                         status = rctx_g35->status;
3362                         ex_status = rctx_g35->ex_status;
3363                         data_length = r1_cmd->io_request->DataLength;
3364                         sense = r1_cmd->sense;
3365                 }
3366
3367                 megasas_return_cmd_fusion(instance, r1_cmd);
3368                 map_cmd_status(fusion, scmd_local, status, ex_status,
3369                                le32_to_cpu(data_length), sense);
3370                 if (instance->ldio_threshold &&
3371                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3372                         atomic_dec(&instance->ldio_outstanding);
3373                 scmd_local->SCp.ptr = NULL;
3374                 megasas_return_cmd_fusion(instance, cmd);
3375                 scsi_dma_unmap(scmd_local);
3376                 scmd_local->scsi_done(scmd_local);
3377         }
3378 }
3379
3380 /**
3381  * complete_cmd_fusion -        Completes command
3382  * @instance:                   Adapter soft state
3383  * Completes all commands that is in reply descriptor queue
3384  */
3385 int
3386 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
3387 {
3388         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3389         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3390         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3391         struct fusion_context *fusion;
3392         struct megasas_cmd *cmd_mfi;
3393         struct megasas_cmd_fusion *cmd_fusion;
3394         u16 smid, num_completed;
3395         u8 reply_descript_type, *sense, status, extStatus;
3396         u32 device_id, data_length;
3397         union desc_value d_val;
3398         struct LD_LOAD_BALANCE_INFO *lbinfo;
3399         int threshold_reply_count = 0;
3400         struct scsi_cmnd *scmd_local = NULL;
3401         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3402         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3403
3404         fusion = instance->ctrl_context;
3405
3406         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3407                 return IRQ_HANDLED;
3408
3409         desc = fusion->reply_frames_desc[MSIxIndex] +
3410                                 fusion->last_reply_idx[MSIxIndex];
3411
3412         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3413
3414         d_val.word = desc->Words;
3415
3416         reply_descript_type = reply_desc->ReplyFlags &
3417                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3418
3419         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3420                 return IRQ_NONE;
3421
3422         num_completed = 0;
3423
3424         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3425                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3426
3427                 smid = le16_to_cpu(reply_desc->SMID);
3428                 cmd_fusion = fusion->cmd_list[smid - 1];
3429                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3430                                                 cmd_fusion->io_request;
3431
3432                 scmd_local = cmd_fusion->scmd;
3433                 status = scsi_io_req->RaidContext.raid_context.status;
3434                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3435                 sense = cmd_fusion->sense;
3436                 data_length = scsi_io_req->DataLength;
3437
3438                 switch (scsi_io_req->Function) {
3439                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3440                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3441                                                 cmd_fusion->io_request;
3442                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3443                                                 &mr_tm_req->TmRequest;
3444                         dev_dbg(&instance->pdev->dev, "TM completion:"
3445                                 "type: 0x%x TaskMID: 0x%x\n",
3446                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3447                         complete(&cmd_fusion->done);
3448                         break;
3449                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3450                         /* Update load balancing info */
3451                         if (fusion->load_balance_info &&
3452                             (cmd_fusion->scmd->SCp.Status &
3453                             MEGASAS_LOAD_BALANCE_FLAG)) {
3454                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3455                                 lbinfo = &fusion->load_balance_info[device_id];
3456                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3457                                 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3458                         }
3459                         /* Fall through - and complete IO */
3460                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3461                         atomic_dec(&instance->fw_outstanding);
3462                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3463                                 map_cmd_status(fusion, scmd_local, status,
3464                                                extStatus, le32_to_cpu(data_length),
3465                                                sense);
3466                                 if (instance->ldio_threshold &&
3467                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3468                                         atomic_dec(&instance->ldio_outstanding);
3469                                 scmd_local->SCp.ptr = NULL;
3470                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3471                                 scsi_dma_unmap(scmd_local);
3472                                 scmd_local->scsi_done(scmd_local);
3473                         } else  /* Optimal VD - R1 FP command completion. */
3474                                 megasas_complete_r1_command(instance, cmd_fusion);
3475                         break;
3476                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3477                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3478                         /* Poll mode. Dummy free.
3479                          * In case of Interrupt mode, caller has reverse check.
3480                          */
3481                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3482                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3483                                 megasas_return_cmd(instance, cmd_mfi);
3484                         } else
3485                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3486                         break;
3487                 }
3488
3489                 fusion->last_reply_idx[MSIxIndex]++;
3490                 if (fusion->last_reply_idx[MSIxIndex] >=
3491                     fusion->reply_q_depth)
3492                         fusion->last_reply_idx[MSIxIndex] = 0;
3493
3494                 desc->Words = cpu_to_le64(ULLONG_MAX);
3495                 num_completed++;
3496                 threshold_reply_count++;
3497
3498                 /* Get the next reply descriptor */
3499                 if (!fusion->last_reply_idx[MSIxIndex])
3500                         desc = fusion->reply_frames_desc[MSIxIndex];
3501                 else
3502                         desc++;
3503
3504                 reply_desc =
3505                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3506
3507                 d_val.word = desc->Words;
3508
3509                 reply_descript_type = reply_desc->ReplyFlags &
3510                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3511
3512                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3513                         break;
3514                 /*
3515                  * Write to reply post host index register after completing threshold
3516                  * number of reply counts and still there are more replies in reply queue
3517                  * pending to be completed
3518                  */
3519                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
3520                         if (instance->msix_combined)
3521                                 writel(((MSIxIndex & 0x7) << 24) |
3522                                         fusion->last_reply_idx[MSIxIndex],
3523                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3524                         else
3525                                 writel((MSIxIndex << 24) |
3526                                         fusion->last_reply_idx[MSIxIndex],
3527                                         instance->reply_post_host_index_addr[0]);
3528                         threshold_reply_count = 0;
3529                 }
3530         }
3531
3532         if (!num_completed)
3533                 return IRQ_NONE;
3534
3535         wmb();
3536         if (instance->msix_combined)
3537                 writel(((MSIxIndex & 0x7) << 24) |
3538                         fusion->last_reply_idx[MSIxIndex],
3539                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3540         else
3541                 writel((MSIxIndex << 24) |
3542                         fusion->last_reply_idx[MSIxIndex],
3543                         instance->reply_post_host_index_addr[0]);
3544         megasas_check_and_restore_queue_depth(instance);
3545         return IRQ_HANDLED;
3546 }
3547
3548 /**
3549  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3550  * @instance:                   Adapter soft state
3551  */
3552 void megasas_sync_irqs(unsigned long instance_addr)
3553 {
3554         u32 count, i;
3555         struct megasas_instance *instance =
3556                 (struct megasas_instance *)instance_addr;
3557
3558         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3559
3560         for (i = 0; i < count; i++)
3561                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3562 }
3563
3564 /**
3565  * megasas_complete_cmd_dpc_fusion -    Completes command
3566  * @instance:                   Adapter soft state
3567  *
3568  * Tasklet to complete cmds
3569  */
3570 void
3571 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3572 {
3573         struct megasas_instance *instance =
3574                 (struct megasas_instance *)instance_addr;
3575         u32 count, MSIxIndex;
3576
3577         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3578
3579         /* If we have already declared adapter dead, donot complete cmds */
3580         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3581                 return;
3582
3583         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3584                 complete_cmd_fusion(instance, MSIxIndex);
3585 }
3586
3587 /**
3588  * megasas_isr_fusion - isr entry point
3589  */
3590 irqreturn_t megasas_isr_fusion(int irq, void *devp)
3591 {
3592         struct megasas_irq_context *irq_context = devp;
3593         struct megasas_instance *instance = irq_context->instance;
3594         u32 mfiStatus;
3595
3596         if (instance->mask_interrupts)
3597                 return IRQ_NONE;
3598
3599         if (!instance->msix_vectors) {
3600                 mfiStatus = instance->instancet->clear_intr(instance);
3601                 if (!mfiStatus)
3602                         return IRQ_NONE;
3603         }
3604
3605         /* If we are resetting, bail */
3606         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3607                 instance->instancet->clear_intr(instance);
3608                 return IRQ_HANDLED;
3609         }
3610
3611         return complete_cmd_fusion(instance, irq_context->MSIxIndex);
3612 }
3613
3614 /**
3615  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3616  * @instance:                   Adapter soft state
3617  * mfi_cmd:                     megasas_cmd pointer
3618  *
3619  */
3620 void
3621 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3622                         struct megasas_cmd *mfi_cmd)
3623 {
3624         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3625         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3626         struct megasas_cmd_fusion *cmd;
3627         struct fusion_context *fusion;
3628         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3629
3630         fusion = instance->ctrl_context;
3631
3632         cmd = megasas_get_cmd_fusion(instance,
3633                         instance->max_scsi_cmds + mfi_cmd->index);
3634
3635         /*  Save the smid. To be used for returning the cmd */
3636         mfi_cmd->context.smid = cmd->index;
3637
3638         /*
3639          * For cmds where the flag is set, store the flag and check
3640          * on completion. For cmds with this flag, don't call
3641          * megasas_complete_cmd
3642          */
3643
3644         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3645                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3646
3647         io_req = cmd->io_request;
3648
3649         if (instance->adapter_type >= INVADER_SERIES) {
3650                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3651                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3652                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3653                 sgl_ptr_end->Flags = 0;
3654         }
3655
3656         mpi25_ieee_chain =
3657           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3658
3659         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3660         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3661                                        SGL) / 4;
3662         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3663
3664         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3665
3666         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3667                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3668
3669         mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3670 }
3671
3672 /**
3673  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3674  * @instance:                   Adapter soft state
3675  * @cmd:                        mfi cmd to build
3676  *
3677  */
3678 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3679 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3680 {
3681         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3682         u16 index;
3683
3684         build_mpt_mfi_pass_thru(instance, cmd);
3685         index = cmd->context.smid;
3686
3687         req_desc = megasas_get_request_descriptor(instance, index - 1);
3688
3689         req_desc->Words = 0;
3690         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3691                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3692
3693         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3694
3695         return req_desc;
3696 }
3697
3698 /**
3699  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3700  * @instance:                   Adapter soft state
3701  * @cmd:                        mfi cmd pointer
3702  *
3703  */
3704 void
3705 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3706                           struct megasas_cmd *cmd)
3707 {
3708         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3709
3710         req_desc = build_mpt_cmd(instance, cmd);
3711
3712         megasas_fire_cmd_fusion(instance, req_desc);
3713         return;
3714 }
3715
3716 /**
3717  * megasas_release_fusion -     Reverses the FW initialization
3718  * @instance:                   Adapter soft state
3719  */
3720 void
3721 megasas_release_fusion(struct megasas_instance *instance)
3722 {
3723         megasas_free_ioc_init_cmd(instance);
3724         megasas_free_cmds(instance);
3725         megasas_free_cmds_fusion(instance);
3726
3727         iounmap(instance->reg_set);
3728
3729         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3730 }
3731
3732 /**
3733  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3734  * @regs:                       MFI register set
3735  */
3736 static u32
3737 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
3738 {
3739         return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
3740 }
3741
3742 /**
3743  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
3744  * @instance:                           Controller's soft instance
3745  * return:                              Number of allocated host crash buffers
3746  */
3747 static void
3748 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3749 {
3750         unsigned int i;
3751
3752         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3753                 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3754                 if (!instance->crash_buf[i]) {
3755                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3756                                 "memory allocation failed at index %d\n", i);
3757                         break;
3758                 }
3759         }
3760         instance->drv_buf_alloc = i;
3761 }
3762
3763 /**
3764  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
3765  * @instance:                           Controller's soft instance
3766  */
3767 void
3768 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3769 {
3770         unsigned int i;
3771         for (i = 0; i < instance->drv_buf_alloc; i++) {
3772                 if (instance->crash_buf[i])
3773                         vfree(instance->crash_buf[i]);
3774         }
3775         instance->drv_buf_index = 0;
3776         instance->drv_buf_alloc = 0;
3777         instance->fw_crash_state = UNAVAILABLE;
3778         instance->fw_crash_buffer_size = 0;
3779 }
3780
3781 /**
3782  * megasas_adp_reset_fusion -   For controller reset
3783  * @regs:                               MFI register set
3784  */
3785 static int
3786 megasas_adp_reset_fusion(struct megasas_instance *instance,
3787                          struct megasas_register_set __iomem *regs)
3788 {
3789         u32 host_diag, abs_state, retry;
3790
3791         /* Now try to reset the chip */
3792         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3793         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3794         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3795         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3796         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3797         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3798         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3799
3800         /* Check that the diag write enable (DRWE) bit is on */
3801         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
3802         retry = 0;
3803         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
3804                 msleep(100);
3805                 host_diag = megasas_readl(instance,
3806                                           &instance->reg_set->fusion_host_diag);
3807                 if (retry++ == 100) {
3808                         dev_warn(&instance->pdev->dev,
3809                                 "Host diag unlock failed from %s %d\n",
3810                                 __func__, __LINE__);
3811                         break;
3812                 }
3813         }
3814         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
3815                 return -1;
3816
3817         /* Send chip reset command */
3818         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
3819                 &instance->reg_set->fusion_host_diag);
3820         msleep(3000);
3821
3822         /* Make sure reset adapter bit is cleared */
3823         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
3824         retry = 0;
3825         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
3826                 msleep(100);
3827                 host_diag = megasas_readl(instance,
3828                                           &instance->reg_set->fusion_host_diag);
3829                 if (retry++ == 1000) {
3830                         dev_warn(&instance->pdev->dev,
3831                                 "Diag reset adapter never cleared %s %d\n",
3832                                 __func__, __LINE__);
3833                         break;
3834                 }
3835         }
3836         if (host_diag & HOST_DIAG_RESET_ADAPTER)
3837                 return -1;
3838
3839         abs_state = instance->instancet->read_fw_status_reg(instance)
3840                         & MFI_STATE_MASK;
3841         retry = 0;
3842
3843         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
3844                 msleep(100);
3845                 abs_state = instance->instancet->
3846                         read_fw_status_reg(instance) & MFI_STATE_MASK;
3847         }
3848         if (abs_state <= MFI_STATE_FW_INIT) {
3849                 dev_warn(&instance->pdev->dev,
3850                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
3851                         abs_state, __func__, __LINE__);
3852                 return -1;
3853         }
3854
3855         return 0;
3856 }
3857
3858 /**
3859  * megasas_check_reset_fusion - For controller reset check
3860  * @regs:                               MFI register set
3861  */
3862 static int
3863 megasas_check_reset_fusion(struct megasas_instance *instance,
3864                            struct megasas_register_set __iomem *regs)
3865 {
3866         return 0;
3867 }
3868
3869 /**
3870  * megasas_trigger_snap_dump -  Trigger snap dump in FW
3871  * @instance:                   Soft instance of adapter
3872  */
3873 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
3874 {
3875         int j;
3876         u32 fw_state;
3877
3878         if (!instance->disableOnlineCtrlReset) {
3879                 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
3880                 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
3881                        &instance->reg_set->doorbell);
3882                 readl(&instance->reg_set->doorbell);
3883         }
3884
3885         for (j = 0; j < instance->snapdump_wait_time; j++) {
3886                 fw_state = instance->instancet->read_fw_status_reg(instance) &
3887                                 MFI_STATE_MASK;
3888                 if (fw_state == MFI_STATE_FAULT) {
3889                         dev_err(&instance->pdev->dev,
3890                                 "Found FW in FAULT state, after snap dump trigger\n");
3891                         return;
3892                 }
3893                 msleep(1000);
3894         }
3895 }
3896
3897 /* This function waits for outstanding commands on fusion to complete */
3898 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
3899                                         int reason, int *convert)
3900 {
3901         int i, outstanding, retval = 0, hb_seconds_missed = 0;
3902         u32 fw_state;
3903         u32 waittime_for_io_completion;
3904
3905         waittime_for_io_completion =
3906                 min_t(u32, resetwaittime,
3907                         (resetwaittime - instance->snapdump_wait_time));
3908
3909         if (reason == MFI_IO_TIMEOUT_OCR) {
3910                 dev_info(&instance->pdev->dev,
3911                         "MFI command is timed out\n");
3912                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3913                 if (instance->snapdump_wait_time)
3914                         megasas_trigger_snap_dump(instance);
3915                 retval = 1;
3916                 goto out;
3917         }
3918
3919         for (i = 0; i < waittime_for_io_completion; i++) {
3920                 /* Check if firmware is in fault state */
3921                 fw_state = instance->instancet->read_fw_status_reg(instance) &
3922                                 MFI_STATE_MASK;
3923                 if (fw_state == MFI_STATE_FAULT) {
3924                         dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
3925                                " will reset adapter scsi%d.\n",
3926                                 instance->host->host_no);
3927                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3928                         if (instance->requestorId && reason) {
3929                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
3930                                 " state while polling during"
3931                                 " I/O timeout handling for %d\n",
3932                                 instance->host->host_no);
3933                                 *convert = 1;
3934                         }
3935
3936                         retval = 1;
3937                         goto out;
3938                 }
3939
3940
3941                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
3942                 if (instance->requestorId && !reason) {
3943                         retval = 1;
3944                         goto out;
3945                 }
3946
3947                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
3948                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
3949                         if (instance->hb_host_mem->HB.fwCounter !=
3950                             instance->hb_host_mem->HB.driverCounter) {
3951                                 instance->hb_host_mem->HB.driverCounter =
3952                                         instance->hb_host_mem->HB.fwCounter;
3953                                 hb_seconds_missed = 0;
3954                         } else {
3955                                 hb_seconds_missed++;
3956                                 if (hb_seconds_missed ==
3957                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
3958                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
3959                                                " Heartbeat never completed "
3960                                                " while polling during I/O "
3961                                                " timeout handling for "
3962                                                "scsi%d.\n",
3963                                                instance->host->host_no);
3964                                                *convert = 1;
3965                                                retval = 1;
3966                                                goto out;
3967                                 }
3968                         }
3969                 }
3970
3971                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3972                 outstanding = atomic_read(&instance->fw_outstanding);
3973                 if (!outstanding)
3974                         goto out;
3975
3976                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
3977                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
3978                                "commands to complete for scsi%d\n", i,
3979                                outstanding, instance->host->host_no);
3980                 }
3981                 msleep(1000);
3982         }
3983
3984         if (instance->snapdump_wait_time) {
3985                 megasas_trigger_snap_dump(instance);
3986                 retval = 1;
3987                 goto out;
3988         }
3989
3990         if (atomic_read(&instance->fw_outstanding)) {
3991                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
3992                        "will reset adapter scsi%d.\n",
3993                        instance->host->host_no);
3994                 *convert = 1;
3995                 retval = 1;
3996         }
3997
3998 out:
3999         return retval;
4000 }
4001
4002 void  megasas_reset_reply_desc(struct megasas_instance *instance)
4003 {
4004         int i, j, count;
4005         struct fusion_context *fusion;
4006         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
4007
4008         fusion = instance->ctrl_context;
4009         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
4010         for (i = 0 ; i < count ; i++) {
4011                 fusion->last_reply_idx[i] = 0;
4012                 reply_desc = fusion->reply_frames_desc[i];
4013                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
4014                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
4015         }
4016 }
4017
4018 /*
4019  * megasas_refire_mgmt_cmd :    Re-fire management commands
4020  * @instance:                           Controller's soft instance
4021 */
4022 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
4023 {
4024         int j;
4025         struct megasas_cmd_fusion *cmd_fusion;
4026         struct fusion_context *fusion;
4027         struct megasas_cmd *cmd_mfi;
4028         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4029         u16 smid;
4030         bool refire_cmd = 0;
4031         u8 result;
4032         u32 opcode = 0;
4033
4034         fusion = instance->ctrl_context;
4035
4036         /* Re-fire management commands.
4037          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4038          */
4039         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4040                 cmd_fusion = fusion->cmd_list[j];
4041                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4042                 smid = le16_to_cpu(cmd_mfi->context.smid);
4043                 result = REFIRE_CMD;
4044
4045                 if (!smid)
4046                         continue;
4047
4048                 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4049
4050                 switch (cmd_mfi->frame->hdr.cmd) {
4051                 case MFI_CMD_DCMD:
4052                         opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4053                          /* Do not refire shutdown command */
4054                         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4055                                 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4056                                 result = COMPLETE_CMD;
4057                                 break;
4058                         }
4059
4060                         refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4061                                       (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4062                                       !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4063
4064                         if (!refire_cmd)
4065                                 result = RETURN_CMD;
4066
4067                         break;
4068                 case MFI_CMD_NVME:
4069                         if (!instance->support_nvme_passthru) {
4070                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4071                                 result = COMPLETE_CMD;
4072                         }
4073
4074                         break;
4075                 default:
4076                         break;
4077                 }
4078
4079                 switch (result) {
4080                 case REFIRE_CMD:
4081                         megasas_fire_cmd_fusion(instance, req_desc);
4082                         break;
4083                 case RETURN_CMD:
4084                         megasas_return_cmd(instance, cmd_mfi);
4085                         break;
4086                 case COMPLETE_CMD:
4087                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4088                         break;
4089                 }
4090         }
4091 }
4092
4093 /*
4094  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4095  * @instance: per adapter struct
4096  * @channel: the channel assigned by the OS
4097  * @id: the id assigned by the OS
4098  *
4099  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4100  */
4101
4102 static int megasas_track_scsiio(struct megasas_instance *instance,
4103                 int id, int channel)
4104 {
4105         int i, found = 0;
4106         struct megasas_cmd_fusion *cmd_fusion;
4107         struct fusion_context *fusion;
4108         fusion = instance->ctrl_context;
4109
4110         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4111                 cmd_fusion = fusion->cmd_list[i];
4112                 if (cmd_fusion->scmd &&
4113                         (cmd_fusion->scmd->device->id == id &&
4114                         cmd_fusion->scmd->device->channel == channel)) {
4115                         dev_info(&instance->pdev->dev,
4116                                 "SCSI commands pending to target"
4117                                 "channel %d id %d \tSMID: 0x%x\n",
4118                                 channel, id, cmd_fusion->index);
4119                         scsi_print_command(cmd_fusion->scmd);
4120                         found = 1;
4121                         break;
4122                 }
4123         }
4124
4125         return found ? FAILED : SUCCESS;
4126 }
4127
4128 /**
4129  * megasas_tm_response_code - translation of device response code
4130  * @ioc: per adapter object
4131  * @mpi_reply: MPI reply returned by firmware
4132  *
4133  * Return nothing.
4134  */
4135 static void
4136 megasas_tm_response_code(struct megasas_instance *instance,
4137                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4138 {
4139         char *desc;
4140
4141         switch (mpi_reply->ResponseCode) {
4142         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4143                 desc = "task management request completed";
4144                 break;
4145         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4146                 desc = "invalid frame";
4147                 break;
4148         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4149                 desc = "task management request not supported";
4150                 break;
4151         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4152                 desc = "task management request failed";
4153                 break;
4154         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4155                 desc = "task management request succeeded";
4156                 break;
4157         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4158                 desc = "invalid lun";
4159                 break;
4160         case 0xA:
4161                 desc = "overlapped tag attempted";
4162                 break;
4163         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4164                 desc = "task queued, however not sent to target";
4165                 break;
4166         default:
4167                 desc = "unknown";
4168                 break;
4169         }
4170         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4171                 mpi_reply->ResponseCode, desc);
4172         dev_dbg(&instance->pdev->dev,
4173                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4174                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4175                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4176                 mpi_reply->Function, mpi_reply->TaskType,
4177                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4178 }
4179
4180 /**
4181  * megasas_issue_tm - main routine for sending tm requests
4182  * @instance: per adapter struct
4183  * @device_handle: device handle
4184  * @channel: the channel assigned by the OS
4185  * @id: the id assigned by the OS
4186  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4187  * @smid_task: smid assigned to the task
4188  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4189  * Context: user
4190  *
4191  * MegaRaid use MPT interface for Task Magement request.
4192  * A generic API for sending task management requests to firmware.
4193  *
4194  * Return SUCCESS or FAILED.
4195  */
4196 static int
4197 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4198         uint channel, uint id, u16 smid_task, u8 type,
4199         struct MR_PRIV_DEVICE *mr_device_priv_data)
4200 {
4201         struct MR_TASK_MANAGE_REQUEST *mr_request;
4202         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4203         unsigned long timeleft;
4204         struct megasas_cmd_fusion *cmd_fusion;
4205         struct megasas_cmd *cmd_mfi;
4206         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4207         struct fusion_context *fusion = NULL;
4208         struct megasas_cmd_fusion *scsi_lookup;
4209         int rc;
4210         int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4211         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4212
4213         fusion = instance->ctrl_context;
4214
4215         cmd_mfi = megasas_get_cmd(instance);
4216
4217         if (!cmd_mfi) {
4218                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4219                         __func__, __LINE__);
4220                 return -ENOMEM;
4221         }
4222
4223         cmd_fusion = megasas_get_cmd_fusion(instance,
4224                         instance->max_scsi_cmds + cmd_mfi->index);
4225
4226         /*  Save the smid. To be used for returning the cmd */
4227         cmd_mfi->context.smid = cmd_fusion->index;
4228
4229         req_desc = megasas_get_request_descriptor(instance,
4230                         (cmd_fusion->index - 1));
4231
4232         cmd_fusion->request_desc = req_desc;
4233         req_desc->Words = 0;
4234
4235         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4236         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4237         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4238         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4239         mpi_request->DevHandle = cpu_to_le16(device_handle);
4240         mpi_request->TaskType = type;
4241         mpi_request->TaskMID = cpu_to_le16(smid_task);
4242         mpi_request->LUN[1] = 0;
4243
4244
4245         req_desc = cmd_fusion->request_desc;
4246         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4247         req_desc->HighPriority.RequestFlags =
4248                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4249                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4250         req_desc->HighPriority.MSIxIndex =  0;
4251         req_desc->HighPriority.LMID = 0;
4252         req_desc->HighPriority.Reserved1 = 0;
4253
4254         if (channel < MEGASAS_MAX_PD_CHANNELS)
4255                 mr_request->tmReqFlags.isTMForPD = 1;
4256         else
4257                 mr_request->tmReqFlags.isTMForLD = 1;
4258
4259         init_completion(&cmd_fusion->done);
4260         megasas_fire_cmd_fusion(instance, req_desc);
4261
4262         switch (type) {
4263         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4264                 timeout = mr_device_priv_data->task_abort_tmo;
4265                 break;
4266         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4267                 timeout = mr_device_priv_data->target_reset_tmo;
4268                 break;
4269         }
4270
4271         timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4272
4273         if (!timeleft) {
4274                 dev_err(&instance->pdev->dev,
4275                         "task mgmt type 0x%x timed out\n", type);
4276                 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
4277                 mutex_unlock(&instance->reset_mutex);
4278                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4279                 mutex_lock(&instance->reset_mutex);
4280                 return rc;
4281         }
4282
4283         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4284         megasas_tm_response_code(instance, mpi_reply);
4285
4286         megasas_return_cmd(instance, cmd_mfi);
4287         rc = SUCCESS;
4288         switch (type) {
4289         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4290                 scsi_lookup = fusion->cmd_list[smid_task - 1];
4291
4292                 if (scsi_lookup->scmd == NULL)
4293                         break;
4294                 else {
4295                         instance->instancet->disable_intr(instance);
4296                         megasas_sync_irqs((unsigned long)instance);
4297                         instance->instancet->enable_intr(instance);
4298                         if (scsi_lookup->scmd == NULL)
4299                                 break;
4300                 }
4301                 rc = FAILED;
4302                 break;
4303
4304         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4305                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4306                         break;
4307                 instance->instancet->disable_intr(instance);
4308                 megasas_sync_irqs((unsigned long)instance);
4309                 rc = megasas_track_scsiio(instance, id, channel);
4310                 instance->instancet->enable_intr(instance);
4311
4312                 break;
4313         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4314         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4315                 break;
4316         default:
4317                 rc = FAILED;
4318                 break;
4319         }
4320
4321         return rc;
4322
4323 }
4324
4325 /*
4326  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4327  * @instance: per adapter struct
4328  *
4329  * Return Non Zero index, if SMID found in outstanding commands
4330  */
4331 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4332 {
4333         int i, ret = 0;
4334         struct megasas_instance *instance;
4335         struct megasas_cmd_fusion *cmd_fusion;
4336         struct fusion_context *fusion;
4337
4338         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4339
4340         fusion = instance->ctrl_context;
4341
4342         for (i = 0; i < instance->max_scsi_cmds; i++) {
4343                 cmd_fusion = fusion->cmd_list[i];
4344                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4345                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4346                                 " SMID: %d\n", cmd_fusion->index);
4347                         ret = cmd_fusion->index;
4348                         break;
4349                 }
4350         }
4351
4352         return ret;
4353 }
4354
4355 /*
4356 * megasas_get_tm_devhandle - Get devhandle for TM request
4357 * @sdev-                     OS provided scsi device
4358 *
4359 * Returns-                   devhandle/targetID of SCSI device
4360 */
4361 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4362 {
4363         u16 pd_index = 0;
4364         u32 device_id;
4365         struct megasas_instance *instance;
4366         struct fusion_context *fusion;
4367         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4368         u16 devhandle = (u16)ULONG_MAX;
4369
4370         instance = (struct megasas_instance *)sdev->host->hostdata;
4371         fusion = instance->ctrl_context;
4372
4373         if (!MEGASAS_IS_LOGICAL(sdev)) {
4374                 if (instance->use_seqnum_jbod_fp) {
4375                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4376                                     + sdev->id;
4377                         pd_sync = (void *)fusion->pd_seq_sync
4378                                         [(instance->pd_seq_map_id - 1) & 1];
4379                         devhandle = pd_sync->seq[pd_index].devHandle;
4380                 } else
4381                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4382                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4383         } else {
4384                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4385                                 + sdev->id;
4386                 devhandle = device_id;
4387         }
4388
4389         return devhandle;
4390 }
4391
4392 /*
4393  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4394  * @scmd : pointer to scsi command object
4395  *
4396  * Return SUCCESS, if command aborted else FAILED
4397  */
4398
4399 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4400 {
4401         struct megasas_instance *instance;
4402         u16 smid, devhandle;
4403         struct fusion_context *fusion;
4404         int ret;
4405         struct MR_PRIV_DEVICE *mr_device_priv_data;
4406         mr_device_priv_data = scmd->device->hostdata;
4407
4408
4409         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4410         fusion = instance->ctrl_context;
4411
4412         scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd);
4413         scsi_print_command(scmd);
4414
4415         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4416                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4417                 "SCSI host:%d\n", instance->host->host_no);
4418                 ret = FAILED;
4419                 return ret;
4420         }
4421
4422         if (!mr_device_priv_data) {
4423                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4424                         "scmd(%p)\n", scmd);
4425                 scmd->result = DID_NO_CONNECT << 16;
4426                 ret = SUCCESS;
4427                 goto out;
4428         }
4429
4430
4431         if (!mr_device_priv_data->is_tm_capable) {
4432                 ret = FAILED;
4433                 goto out;
4434         }
4435
4436         mutex_lock(&instance->reset_mutex);
4437
4438         smid = megasas_fusion_smid_lookup(scmd);
4439
4440         if (!smid) {
4441                 ret = SUCCESS;
4442                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4443                         " issued is not found in oustanding commands\n");
4444                 mutex_unlock(&instance->reset_mutex);
4445                 goto out;
4446         }
4447
4448         devhandle = megasas_get_tm_devhandle(scmd->device);
4449
4450         if (devhandle == (u16)ULONG_MAX) {
4451                 ret = SUCCESS;
4452                 sdev_printk(KERN_INFO, scmd->device,
4453                         "task abort issued for invalid devhandle\n");
4454                 mutex_unlock(&instance->reset_mutex);
4455                 goto out;
4456         }
4457         sdev_printk(KERN_INFO, scmd->device,
4458                 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
4459                 scmd, devhandle);
4460
4461         mr_device_priv_data->tm_busy = 1;
4462         ret = megasas_issue_tm(instance, devhandle,
4463                         scmd->device->channel, scmd->device->id, smid,
4464                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4465                         mr_device_priv_data);
4466         mr_device_priv_data->tm_busy = 0;
4467
4468         mutex_unlock(&instance->reset_mutex);
4469 out:
4470         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
4471                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4472
4473         return ret;
4474 }
4475
4476 /*
4477  * megasas_reset_target_fusion : target reset function for fusion adapters
4478  * scmd: SCSI command pointer
4479  *
4480  * Returns SUCCESS if all commands associated with target aborted else FAILED
4481  */
4482
4483 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4484 {
4485
4486         struct megasas_instance *instance;
4487         int ret = FAILED;
4488         u16 devhandle;
4489         struct fusion_context *fusion;
4490         struct MR_PRIV_DEVICE *mr_device_priv_data;
4491         mr_device_priv_data = scmd->device->hostdata;
4492
4493         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4494         fusion = instance->ctrl_context;
4495
4496         sdev_printk(KERN_INFO, scmd->device,
4497                     "target reset called for scmd(%p)\n", scmd);
4498
4499         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4500                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4501                 "SCSI host:%d\n", instance->host->host_no);
4502                 ret = FAILED;
4503                 return ret;
4504         }
4505
4506         if (!mr_device_priv_data) {
4507                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4508                         "scmd(%p)\n", scmd);
4509                 scmd->result = DID_NO_CONNECT << 16;
4510                 ret = SUCCESS;
4511                 goto out;
4512         }
4513
4514
4515         if (!mr_device_priv_data->is_tm_capable) {
4516                 ret = FAILED;
4517                 goto out;
4518         }
4519
4520         mutex_lock(&instance->reset_mutex);
4521         devhandle = megasas_get_tm_devhandle(scmd->device);
4522
4523         if (devhandle == (u16)ULONG_MAX) {
4524                 ret = SUCCESS;
4525                 sdev_printk(KERN_INFO, scmd->device,
4526                         "target reset issued for invalid devhandle\n");
4527                 mutex_unlock(&instance->reset_mutex);
4528                 goto out;
4529         }
4530
4531         sdev_printk(KERN_INFO, scmd->device,
4532                 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
4533                 scmd, devhandle);
4534         mr_device_priv_data->tm_busy = 1;
4535         ret = megasas_issue_tm(instance, devhandle,
4536                         scmd->device->channel, scmd->device->id, 0,
4537                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4538                         mr_device_priv_data);
4539         mr_device_priv_data->tm_busy = 0;
4540         mutex_unlock(&instance->reset_mutex);
4541 out:
4542         scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
4543                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4544
4545         return ret;
4546 }
4547
4548 /*SRIOV get other instance in cluster if any*/
4549 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4550 {
4551         int i;
4552
4553         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4554                 if (megasas_mgmt_info.instance[i] &&
4555                         (megasas_mgmt_info.instance[i] != instance) &&
4556                          megasas_mgmt_info.instance[i]->requestorId &&
4557                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4558                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4559                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4560                         return megasas_mgmt_info.instance[i];
4561         }
4562         return NULL;
4563 }
4564
4565 /* Check for a second path that is currently UP */
4566 int megasas_check_mpio_paths(struct megasas_instance *instance,
4567         struct scsi_cmnd *scmd)
4568 {
4569         struct megasas_instance *peer_instance = NULL;
4570         int retval = (DID_REQUEUE << 16);
4571
4572         if (instance->peerIsPresent) {
4573                 peer_instance = megasas_get_peer_instance(instance);
4574                 if ((peer_instance) &&
4575                         (atomic_read(&peer_instance->adprecovery) ==
4576                         MEGASAS_HBA_OPERATIONAL))
4577                         retval = (DID_NO_CONNECT << 16);
4578         }
4579         return retval;
4580 }
4581
4582 /* Core fusion reset function */
4583 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4584 {
4585         int retval = SUCCESS, i, j, convert = 0;
4586         struct megasas_instance *instance;
4587         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4588         struct fusion_context *fusion;
4589         u32 abs_state, status_reg, reset_adapter;
4590         u32 io_timeout_in_crash_mode = 0;
4591         struct scsi_cmnd *scmd_local = NULL;
4592         struct scsi_device *sdev;
4593         int ret_target_prop = DCMD_FAILED;
4594         bool is_target_prop = false;
4595
4596         instance = (struct megasas_instance *)shost->hostdata;
4597         fusion = instance->ctrl_context;
4598
4599         mutex_lock(&instance->reset_mutex);
4600
4601         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4602                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4603                        "returning FAILED for scsi%d.\n",
4604                         instance->host->host_no);
4605                 mutex_unlock(&instance->reset_mutex);
4606                 return FAILED;
4607         }
4608         status_reg = instance->instancet->read_fw_status_reg(instance);
4609         abs_state = status_reg & MFI_STATE_MASK;
4610
4611         /* IO timeout detected, forcibly put FW in FAULT state */
4612         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4613                 instance->crash_dump_app_support && reason) {
4614                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4615                         "forcibly FAULT Firmware\n");
4616                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4617                 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4618                 writel(status_reg | MFI_STATE_FORCE_OCR,
4619                         &instance->reg_set->doorbell);
4620                 readl(&instance->reg_set->doorbell);
4621                 mutex_unlock(&instance->reset_mutex);
4622                 do {
4623                         ssleep(3);
4624                         io_timeout_in_crash_mode++;
4625                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4626                                 "seconds for crash dump collection and OCR "
4627                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4628                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4629                         (io_timeout_in_crash_mode < 80));
4630
4631                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4632                         dev_info(&instance->pdev->dev, "OCR done for IO "
4633                                 "timeout case\n");
4634                         retval = SUCCESS;
4635                 } else {
4636                         dev_info(&instance->pdev->dev, "Controller is not "
4637                                 "operational after 240 seconds wait for IO "
4638                                 "timeout case in FW crash dump mode\n do "
4639                                 "OCR/kill adapter\n");
4640                         retval = megasas_reset_fusion(shost, 0);
4641                 }
4642                 return retval;
4643         }
4644
4645         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4646                 del_timer_sync(&instance->sriov_heartbeat_timer);
4647         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4648         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4649         instance->instancet->disable_intr(instance);
4650         megasas_sync_irqs((unsigned long)instance);
4651
4652         /* First try waiting for commands to complete */
4653         if (megasas_wait_for_outstanding_fusion(instance, reason,
4654                                                 &convert)) {
4655                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4656                 dev_warn(&instance->pdev->dev, "resetting fusion "
4657                        "adapter scsi%d.\n", instance->host->host_no);
4658                 if (convert)
4659                         reason = 0;
4660
4661                 if (megasas_dbg_lvl & OCR_LOGS)
4662                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4663
4664                 /* Now return commands back to the OS */
4665                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4666                         cmd_fusion = fusion->cmd_list[i];
4667                         /*check for extra commands issued by driver*/
4668                         if (instance->adapter_type >= VENTURA_SERIES) {
4669                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4670                                 megasas_return_cmd_fusion(instance, r1_cmd);
4671                         }
4672                         scmd_local = cmd_fusion->scmd;
4673                         if (cmd_fusion->scmd) {
4674                                 if (megasas_dbg_lvl & OCR_LOGS) {
4675                                         sdev_printk(KERN_INFO,
4676                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4677                                                 cmd_fusion->index);
4678                                         scsi_print_command(cmd_fusion->scmd);
4679                                 }
4680
4681                                 scmd_local->result =
4682                                         megasas_check_mpio_paths(instance,
4683                                                         scmd_local);
4684                                 if (instance->ldio_threshold &&
4685                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4686                                         atomic_dec(&instance->ldio_outstanding);
4687                                 megasas_return_cmd_fusion(instance, cmd_fusion);
4688                                 scsi_dma_unmap(scmd_local);
4689                                 scmd_local->scsi_done(scmd_local);
4690                         }
4691                 }
4692
4693                 atomic_set(&instance->fw_outstanding, 0);
4694
4695                 status_reg = instance->instancet->read_fw_status_reg(instance);
4696                 abs_state = status_reg & MFI_STATE_MASK;
4697                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4698                 if (instance->disableOnlineCtrlReset ||
4699                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4700                         /* Reset not supported, kill adapter */
4701                         dev_warn(&instance->pdev->dev, "Reset not supported"
4702                                ", killing adapter scsi%d.\n",
4703                                 instance->host->host_no);
4704                         megaraid_sas_kill_hba(instance);
4705                         instance->skip_heartbeat_timer_del = 1;
4706                         retval = FAILED;
4707                         goto out;
4708                 }
4709
4710                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4711                 if (instance->requestorId && !reason) {
4712                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4713                         goto transition_to_ready;
4714                 }
4715
4716                 /* Now try to reset the chip */
4717                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
4718
4719                         if (instance->instancet->adp_reset
4720                                 (instance, instance->reg_set))
4721                                 continue;
4722 transition_to_ready:
4723                         /* Wait for FW to become ready */
4724                         if (megasas_transition_to_ready(instance, 1)) {
4725                                 dev_warn(&instance->pdev->dev,
4726                                         "Failed to transition controller to ready for "
4727                                         "scsi%d.\n", instance->host->host_no);
4728                                 if (instance->requestorId && !reason)
4729                                         goto fail_kill_adapter;
4730                                 else
4731                                         continue;
4732                         }
4733                         megasas_reset_reply_desc(instance);
4734                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4735
4736                         if (megasas_ioc_init_fusion(instance)) {
4737                                 if (instance->requestorId && !reason)
4738                                         goto fail_kill_adapter;
4739                                 else
4740                                         continue;
4741                         }
4742
4743                         if (megasas_get_ctrl_info(instance)) {
4744                                 dev_info(&instance->pdev->dev,
4745                                         "Failed from %s %d\n",
4746                                         __func__, __LINE__);
4747                                 megaraid_sas_kill_hba(instance);
4748                                 retval = FAILED;
4749                                 goto out;
4750                         }
4751
4752                         megasas_refire_mgmt_cmd(instance);
4753
4754                         /* Reset load balance info */
4755                         if (fusion->load_balance_info)
4756                                 memset(fusion->load_balance_info, 0,
4757                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
4758                                        MAX_LOGICAL_DRIVES_EXT));
4759
4760                         if (!megasas_get_map_info(instance))
4761                                 megasas_sync_map_info(instance);
4762
4763                         megasas_setup_jbod_map(instance);
4764
4765                         /* reset stream detection array */
4766                         if (instance->adapter_type >= VENTURA_SERIES) {
4767                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
4768                                         memset(fusion->stream_detect_by_ld[j],
4769                                         0, sizeof(struct LD_STREAM_DETECT));
4770                                  fusion->stream_detect_by_ld[j]->mru_bit_map
4771                                                 = MR_STREAM_BITMAP;
4772                                 }
4773                         }
4774
4775                         clear_bit(MEGASAS_FUSION_IN_RESET,
4776                                   &instance->reset_flags);
4777                         instance->instancet->enable_intr(instance);
4778
4779                         shost_for_each_device(sdev, shost) {
4780                                 if ((instance->tgt_prop) &&
4781                                     (instance->nvme_page_size))
4782                                         ret_target_prop = megasas_get_target_prop(instance, sdev);
4783
4784                                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
4785                                 megasas_set_dynamic_target_properties(sdev, is_target_prop);
4786                         }
4787
4788                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4789
4790                         dev_info(&instance->pdev->dev, "Interrupts are enabled and"
4791                                 " controller is OPERATIONAL for scsi:%d\n",
4792                                 instance->host->host_no);
4793
4794                         /* Restart SR-IOV heartbeat */
4795                         if (instance->requestorId) {
4796                                 if (!megasas_sriov_start_heartbeat(instance, 0))
4797                                         megasas_start_timer(instance);
4798                                 else
4799                                         instance->skip_heartbeat_timer_del = 1;
4800                         }
4801
4802                         if (instance->crash_dump_drv_support &&
4803                                 instance->crash_dump_app_support)
4804                                 megasas_set_crash_dump_params(instance,
4805                                         MR_CRASH_BUF_TURN_ON);
4806                         else
4807                                 megasas_set_crash_dump_params(instance,
4808                                         MR_CRASH_BUF_TURN_OFF);
4809
4810                         if (instance->snapdump_wait_time) {
4811                                 megasas_get_snapdump_properties(instance);
4812                                 dev_info(&instance->pdev->dev,
4813                                          "Snap dump wait time\t: %d\n",
4814                                          instance->snapdump_wait_time);
4815                         }
4816
4817                         retval = SUCCESS;
4818
4819                         /* Adapter reset completed successfully */
4820                         dev_warn(&instance->pdev->dev,
4821                                  "Reset successful for scsi%d.\n",
4822                                  instance->host->host_no);
4823
4824                         goto out;
4825                 }
4826 fail_kill_adapter:
4827                 /* Reset failed, kill the adapter */
4828                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
4829                        "adapter scsi%d.\n", instance->host->host_no);
4830                 megaraid_sas_kill_hba(instance);
4831                 instance->skip_heartbeat_timer_del = 1;
4832                 retval = FAILED;
4833         } else {
4834                 /* For VF: Restart HB timer if we didn't OCR */
4835                 if (instance->requestorId) {
4836                         megasas_start_timer(instance);
4837                 }
4838                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4839                 instance->instancet->enable_intr(instance);
4840                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4841         }
4842 out:
4843         clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4844         mutex_unlock(&instance->reset_mutex);
4845         return retval;
4846 }
4847
4848 /* Fusion Crash dump collection */
4849 void  megasas_fusion_crash_dump(struct megasas_instance *instance)
4850 {
4851         u32 status_reg;
4852         u8 partial_copy = 0;
4853         int wait = 0;
4854
4855
4856         status_reg = instance->instancet->read_fw_status_reg(instance);
4857
4858         /*
4859          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
4860          * to host crash buffers
4861          */
4862         if (instance->drv_buf_index == 0) {
4863                 /* Buffer is already allocated for old Crash dump.
4864                  * Do OCR and do not wait for crash dump collection
4865                  */
4866                 if (instance->drv_buf_alloc) {
4867                         dev_info(&instance->pdev->dev, "earlier crash dump is "
4868                                 "not yet copied by application, ignoring this "
4869                                 "crash dump and initiating OCR\n");
4870                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4871                         writel(status_reg,
4872                                 &instance->reg_set->outbound_scratch_pad_0);
4873                         readl(&instance->reg_set->outbound_scratch_pad_0);
4874                         return;
4875                 }
4876                 megasas_alloc_host_crash_buffer(instance);
4877                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
4878                         "allocated: %d\n", instance->drv_buf_alloc);
4879         }
4880
4881         while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
4882                (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
4883                 if (!(status_reg & MFI_STATE_DMADONE)) {
4884                         /*
4885                          * Next crash dump buffer is not yet DMA'd by FW
4886                          * Check after 10ms. Wait for 1 second for FW to
4887                          * post the next buffer. If not bail out.
4888                          */
4889                         wait++;
4890                         msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
4891                         status_reg = instance->instancet->read_fw_status_reg(
4892                                         instance);
4893                         continue;
4894                 }
4895
4896                 wait = 0;
4897                 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
4898                         dev_info(&instance->pdev->dev,
4899                                  "Driver is done copying the buffer: %d\n",
4900                                  instance->drv_buf_alloc);
4901                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4902                         partial_copy = 1;
4903                         break;
4904                 } else {
4905                         memcpy(instance->crash_buf[instance->drv_buf_index],
4906                                instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
4907                         instance->drv_buf_index++;
4908                         status_reg &= ~MFI_STATE_DMADONE;
4909                 }
4910
4911                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
4912                 readl(&instance->reg_set->outbound_scratch_pad_0);
4913
4914                 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
4915                 status_reg = instance->instancet->read_fw_status_reg(instance);
4916         }
4917
4918         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
4919                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
4920                         "of copied buffers: %d\n", instance->drv_buf_index);
4921                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
4922                 instance->fw_crash_state = AVAILABLE;
4923                 instance->drv_buf_index = 0;
4924                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
4925                 readl(&instance->reg_set->outbound_scratch_pad_0);
4926                 if (!partial_copy)
4927                         megasas_reset_fusion(instance->host, 0);
4928         }
4929 }
4930
4931
4932 /* Fusion OCR work queue */
4933 void megasas_fusion_ocr_wq(struct work_struct *work)
4934 {
4935         struct megasas_instance *instance =
4936                 container_of(work, struct megasas_instance, work_init);
4937
4938         megasas_reset_fusion(instance->host, 0);
4939 }
4940
4941 /* Allocate fusion context */
4942 int
4943 megasas_alloc_fusion_context(struct megasas_instance *instance)
4944 {
4945         struct fusion_context *fusion;
4946
4947         instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
4948                                          GFP_KERNEL);
4949         if (!instance->ctrl_context) {
4950                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4951                         __func__, __LINE__);
4952                 return -ENOMEM;
4953         }
4954
4955         fusion = instance->ctrl_context;
4956
4957         fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4958                                               sizeof(LD_SPAN_INFO));
4959         fusion->log_to_span =
4960                 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4961                                                 fusion->log_to_span_pages);
4962         if (!fusion->log_to_span) {
4963                 fusion->log_to_span =
4964                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
4965                                            sizeof(LD_SPAN_INFO)));
4966                 if (!fusion->log_to_span) {
4967                         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4968                                 __func__, __LINE__);
4969                         return -ENOMEM;
4970                 }
4971         }
4972
4973         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4974                 sizeof(struct LD_LOAD_BALANCE_INFO));
4975         fusion->load_balance_info =
4976                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4977                 fusion->load_balance_info_pages);
4978         if (!fusion->load_balance_info) {
4979                 fusion->load_balance_info =
4980                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
4981                                            sizeof(struct LD_LOAD_BALANCE_INFO)));
4982                 if (!fusion->load_balance_info)
4983                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
4984                                 "continuing without Load Balance support\n");
4985         }
4986
4987         return 0;
4988 }
4989
4990 void
4991 megasas_free_fusion_context(struct megasas_instance *instance)
4992 {
4993         struct fusion_context *fusion = instance->ctrl_context;
4994
4995         if (fusion) {
4996                 if (fusion->load_balance_info) {
4997                         if (is_vmalloc_addr(fusion->load_balance_info))
4998                                 vfree(fusion->load_balance_info);
4999                         else
5000                                 free_pages((ulong)fusion->load_balance_info,
5001                                         fusion->load_balance_info_pages);
5002                 }
5003
5004                 if (fusion->log_to_span) {
5005                         if (is_vmalloc_addr(fusion->log_to_span))
5006                                 vfree(fusion->log_to_span);
5007                         else
5008                                 free_pages((ulong)fusion->log_to_span,
5009                                            fusion->log_to_span_pages);
5010                 }
5011
5012                 kfree(fusion);
5013         }
5014 }
5015
5016 struct megasas_instance_template megasas_instance_template_fusion = {
5017         .enable_intr = megasas_enable_intr_fusion,
5018         .disable_intr = megasas_disable_intr_fusion,
5019         .clear_intr = megasas_clear_intr_fusion,
5020         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
5021         .adp_reset = megasas_adp_reset_fusion,
5022         .check_reset = megasas_check_reset_fusion,
5023         .service_isr = megasas_isr_fusion,
5024         .tasklet = megasas_complete_cmd_dpc_fusion,
5025         .init_adapter = megasas_init_adapter_fusion,
5026         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5027         .issue_dcmd = megasas_issue_dcmd_fusion,
5028 };