drivers/scsi/megaraid/megaraid_sas_fusion.c

   1 /*
   2  *  Linux MegaRAID driver for SAS based RAID controllers
   3  *
   4  *  Copyright (c) 2009-2013  LSI Corporation
   5  *  Copyright (c) 2013-2016  Avago Technologies
   6  *  Copyright (c) 2016-2018  Broadcom Inc.
   7  *
   8  *  This program is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU General Public License
  10  *  as published by the Free Software Foundation; either version 2
  11  *  of the License, or (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  *
  21  *  FILE: megaraid_sas_fusion.c
  22  *
  23  *  Authors: Broadcom Inc.
  24  *           Sumant Patro
  25  *           Adam Radford
  26  *           Kashyap Desai <kashyap.desai@broadcom.com>
  27  *           Sumit Saxena <sumit.saxena@broadcom.com>
  28  *
  29  *  Send feedback to: megaraidlinux.pdl@broadcom.com
  30  */
  31
  32 #include <linux/kernel.h>
  33 #include <linux/types.h>
  34 #include <linux/pci.h>
  35 #include <linux/list.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/module.h>
  38 #include <linux/spinlock.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/delay.h>
  41 #include <linux/uio.h>
  42 #include <linux/uaccess.h>
  43 #include <linux/fs.h>
  44 #include <linux/compat.h>
  45 #include <linux/blkdev.h>
  46 #include <linux/mutex.h>
  47 #include <linux/poll.h>
  48 #include <linux/vmalloc.h>
  49 #include <linux/workqueue.h>
  50
  51 #include <scsi/scsi.h>
  52 #include <scsi/scsi_cmnd.h>
  53 #include <scsi/scsi_device.h>
  54 #include <scsi/scsi_host.h>
  55 #include <scsi/scsi_dbg.h>
  56 #include <linux/dmi.h>
  57
  58 #include "megaraid_sas_fusion.h"
  59 #include "megaraid_sas.h"
  60
  61
  62 extern void megasas_free_cmds(struct megasas_instance *instance);
  63 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
  64                                            *instance);
  65 extern void
  66 megasas_complete_cmd(struct megasas_instance *instance,
  67                      struct megasas_cmd *cmd, u8 alt_status);
  68 int
  69 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
  70               int seconds);
  71
  72 void
  73 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
  74 int megasas_alloc_cmds(struct megasas_instance *instance);
  75 int
  76 megasas_clear_intr_fusion(struct megasas_instance *instance);
  77 int
  78 megasas_issue_polled(struct megasas_instance *instance,
  79                      struct megasas_cmd *cmd);
  80 void
  81 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
  82
  83 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
  84 void megaraid_sas_kill_hba(struct megasas_instance *instance);
  85
  86 extern u32 megasas_dbg_lvl;
  87 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
  88                                   int initial);
  89 void megasas_start_timer(struct megasas_instance *instance);
  90 extern struct megasas_mgmt_info megasas_mgmt_info;
  91 extern unsigned int resetwaittime;
  92 extern unsigned int dual_qdepth_disable;
  93 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
  94 static void megasas_free_reply_fusion(struct megasas_instance *instance);
  95 static inline
  96 void megasas_configure_queue_sizes(struct megasas_instance *instance);
  97 static void megasas_fusion_crash_dump(struct megasas_instance *instance);
  98 extern u32 megasas_readl(struct megasas_instance *instance,
  99                          const volatile void __iomem *addr);
 100
 101 /**
 102  * megasas_check_same_4gb_region -      check if allocation
 103  *                                      crosses same 4GB boundary or not
 104  * @instance -                          adapter's soft instance
 105  * start_addr -                 start address of DMA allocation
 106  * size -                               size of allocation in bytes
 107  * return -                             true : allocation does not cross same
 108  *                                      4GB boundary
 109  *                                      false: allocation crosses same
 110  *                                      4GB boundary
 111  */
 112 static inline bool megasas_check_same_4gb_region
 113         (struct megasas_instance *instance, dma_addr_t start_addr, size_t size)
 114 {
 115         dma_addr_t end_addr;
 116
 117         end_addr = start_addr + size;
 118
 119         if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) {
 120                 dev_err(&instance->pdev->dev,
 121                         "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n",
 122                         (unsigned long long)start_addr,
 123                         (unsigned long long)end_addr);
 124                 return false;
 125         }
 126
 127         return true;
 128 }
 129
 130 /**
 131  * megasas_enable_intr_fusion - Enables interrupts
 132  * @regs:                       MFI register set
 133  */
 134 void
 135 megasas_enable_intr_fusion(struct megasas_instance *instance)
 136 {
 137         struct megasas_register_set __iomem *regs;
 138         regs = instance->reg_set;
 139
 140         instance->mask_interrupts = 0;
 141         /* For Thunderbolt/Invader also clear intr on enable */
 142         writel(~0, &regs->outbound_intr_status);
 143         readl(&regs->outbound_intr_status);
 144
 145         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 146
 147         /* Dummy readl to force pci flush */
 148         readl(&regs->outbound_intr_mask);
 149 }
 150
 151 /**
 152  * megasas_disable_intr_fusion - Disables interrupt
 153  * @regs:                        MFI register set
 154  */
 155 void
 156 megasas_disable_intr_fusion(struct megasas_instance *instance)
 157 {
 158         u32 mask = 0xFFFFFFFF;
 159         u32 status;
 160         struct megasas_register_set __iomem *regs;
 161         regs = instance->reg_set;
 162         instance->mask_interrupts = 1;
 163
 164         writel(mask, &regs->outbound_intr_mask);
 165         /* Dummy readl to force pci flush */
 166         status = readl(&regs->outbound_intr_mask);
 167 }
 168
 169 int
 170 megasas_clear_intr_fusion(struct megasas_instance *instance)
 171 {
 172         u32 status;
 173         struct megasas_register_set __iomem *regs;
 174         regs = instance->reg_set;
 175         /*
 176          * Check if it is our interrupt
 177          */
 178         status = megasas_readl(instance,
 179                                &regs->outbound_intr_status);
 180
 181         if (status & 1) {
 182                 writel(status, &regs->outbound_intr_status);
 183                 readl(&regs->outbound_intr_status);
 184                 return 1;
 185         }
 186         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 187                 return 0;
 188
 189         return 1;
 190 }
 191
 192 /**
 193  * megasas_get_cmd_fusion -     Get a command from the free pool
 194  * @instance:           Adapter soft state
 195  *
 196  * Returns a blk_tag indexed mpt frame
 197  */
 198 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 199                                                   *instance, u32 blk_tag)
 200 {
 201         struct fusion_context *fusion;
 202
 203         fusion = instance->ctrl_context;
 204         return fusion->cmd_list[blk_tag];
 205 }
 206
 207 /**
 208  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 209  * @instance:           Adapter soft state
 210  * @cmd:                Command packet to be returned to free command pool
 211  */
 212 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 213         struct megasas_cmd_fusion *cmd)
 214 {
 215         cmd->scmd = NULL;
 216         memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 217         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 218         cmd->cmd_completed = false;
 219 }
 220
 221 /**
 222  * megasas_fire_cmd_fusion -    Sends command to the FW
 223  * @instance:                   Adapter soft state
 224  * @req_desc:                   64bit Request descriptor
 225  *
 226  * Perform PCI Write.
 227  */
 228
 229 static void
 230 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 231                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 232 {
 233 #if defined(writeq) && defined(CONFIG_64BIT)
 234         u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
 235                 le32_to_cpu(req_desc->u.low));
 236
 237         writeq(req_data, &instance->reg_set->inbound_low_queue_port);
 238 #else
 239         unsigned long flags;
 240         spin_lock_irqsave(&instance->hba_lock, flags);
 241         writel(le32_to_cpu(req_desc->u.low),
 242                 &instance->reg_set->inbound_low_queue_port);
 243         writel(le32_to_cpu(req_desc->u.high),
 244                 &instance->reg_set->inbound_high_queue_port);
 245         mmiowb();
 246         spin_unlock_irqrestore(&instance->hba_lock, flags);
 247 #endif
 248 }
 249
 250 /**
 251  * megasas_fusion_update_can_queue -    Do all Adapter Queue depth related calculations here
 252  * @instance:                                                   Adapter soft state
 253  * fw_boot_context:                                             Whether this function called during probe or after OCR
 254  *
 255  * This function is only for fusion controllers.
 256  * Update host can queue, if firmware downgrade max supported firmware commands.
 257  * Firmware upgrade case will be skiped because underlying firmware has
 258  * more resource than exposed to the OS.
 259  *
 260  */
 261 static void
 262 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
 263 {
 264         u16 cur_max_fw_cmds = 0;
 265         u16 ldio_threshold = 0;
 266         struct megasas_register_set __iomem *reg_set;
 267
 268         reg_set = instance->reg_set;
 269
 270         /* ventura FW does not fill outbound_scratch_pad_2 with queue depth */
 271         if (instance->adapter_type < VENTURA_SERIES)
 272                 cur_max_fw_cmds =
 273                 megasas_readl(instance,
 274                               &instance->reg_set->outbound_scratch_pad_2) & 0x00FFFF;
 275
 276         if (dual_qdepth_disable || !cur_max_fw_cmds)
 277                 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
 278         else
 279                 ldio_threshold =
 280                         (instance->instancet->read_fw_status_reg(instance) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
 281
 282         dev_info(&instance->pdev->dev,
 283                  "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n",
 284                  cur_max_fw_cmds, ldio_threshold);
 285
 286         if (fw_boot_context == OCR_CONTEXT) {
 287                 cur_max_fw_cmds = cur_max_fw_cmds - 1;
 288                 if (cur_max_fw_cmds < instance->max_fw_cmds) {
 289                         instance->cur_can_queue =
 290                                 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
 291                                                 MEGASAS_FUSION_IOCTL_CMDS);
 292                         instance->host->can_queue = instance->cur_can_queue;
 293                         instance->ldio_threshold = ldio_threshold;
 294                 }
 295         } else {
 296                 instance->max_fw_cmds = cur_max_fw_cmds;
 297                 instance->ldio_threshold = ldio_threshold;
 298
 299                 if (reset_devices)
 300                         instance->max_fw_cmds = min(instance->max_fw_cmds,
 301                                                 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
 302                 /*
 303                 * Reduce the max supported cmds by 1. This is to ensure that the
 304                 * reply_q_sz (1 more than the max cmd that driver may send)
 305                 * does not exceed max cmds that the FW can support
 306                 */
 307                 instance->max_fw_cmds = instance->max_fw_cmds-1;
 308         }
 309 }
 310 /**
 311  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
 312  * @instance:           Adapter soft state
 313  */
 314 void
 315 megasas_free_cmds_fusion(struct megasas_instance *instance)
 316 {
 317         int i;
 318         struct fusion_context *fusion = instance->ctrl_context;
 319         struct megasas_cmd_fusion *cmd;
 320
 321         if (fusion->sense)
 322                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 323                               fusion->sense_phys_addr);
 324
 325         /* SG */
 326         if (fusion->cmd_list) {
 327                 for (i = 0; i < instance->max_mpt_cmds; i++) {
 328                         cmd = fusion->cmd_list[i];
 329                         if (cmd) {
 330                                 if (cmd->sg_frame)
 331                                         dma_pool_free(fusion->sg_dma_pool,
 332                                                       cmd->sg_frame,
 333                                                       cmd->sg_frame_phys_addr);
 334                         }
 335                         kfree(cmd);
 336                 }
 337                 kfree(fusion->cmd_list);
 338         }
 339
 340         if (fusion->sg_dma_pool) {
 341                 dma_pool_destroy(fusion->sg_dma_pool);
 342                 fusion->sg_dma_pool = NULL;
 343         }
 344         if (fusion->sense_dma_pool) {
 345                 dma_pool_destroy(fusion->sense_dma_pool);
 346                 fusion->sense_dma_pool = NULL;
 347         }
 348
 349
 350         /* Reply Frame, Desc*/
 351         if (instance->is_rdpq)
 352                 megasas_free_rdpq_fusion(instance);
 353         else
 354                 megasas_free_reply_fusion(instance);
 355
 356         /* Request Frame, Desc*/
 357         if (fusion->req_frames_desc)
 358                 dma_free_coherent(&instance->pdev->dev,
 359                         fusion->request_alloc_sz, fusion->req_frames_desc,
 360                         fusion->req_frames_desc_phys);
 361         if (fusion->io_request_frames)
 362                 dma_pool_free(fusion->io_request_frames_pool,
 363                         fusion->io_request_frames,
 364                         fusion->io_request_frames_phys);
 365         if (fusion->io_request_frames_pool) {
 366                 dma_pool_destroy(fusion->io_request_frames_pool);
 367                 fusion->io_request_frames_pool = NULL;
 368         }
 369 }
 370
 371 /**
 372  * megasas_create_sg_sense_fusion -     Creates DMA pool for cmd frames
 373  * @instance:                   Adapter soft state
 374  *
 375  */
 376 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 377 {
 378         int i;
 379         u16 max_cmd;
 380         struct fusion_context *fusion;
 381         struct megasas_cmd_fusion *cmd;
 382         int sense_sz;
 383         u32 offset;
 384
 385         fusion = instance->ctrl_context;
 386         max_cmd = instance->max_fw_cmds;
 387         sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
 388
 389         fusion->sg_dma_pool =
 390                         dma_pool_create("mr_sg", &instance->pdev->dev,
 391                                 instance->max_chain_frame_sz,
 392                                 MR_DEFAULT_NVME_PAGE_SIZE, 0);
 393         /* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
 394         fusion->sense_dma_pool =
 395                         dma_pool_create("mr_sense", &instance->pdev->dev,
 396                                 sense_sz, 64, 0);
 397
 398         if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
 399                 dev_err(&instance->pdev->dev,
 400                         "Failed from %s %d\n",  __func__, __LINE__);
 401                 return -ENOMEM;
 402         }
 403
 404         fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 405                                        GFP_KERNEL, &fusion->sense_phys_addr);
 406         if (!fusion->sense) {
 407                 dev_err(&instance->pdev->dev,
 408                         "failed from %s %d\n",  __func__, __LINE__);
 409                 return -ENOMEM;
 410         }
 411
 412         /* sense buffer, request frame and reply desc pool requires to be in
 413          * same 4 gb region. Below function will check this.
 414          * In case of failure, new pci pool will be created with updated
 415          * alignment.
 416          * Older allocation and pool will be destroyed.
 417          * Alignment will be used such a way that next allocation if success,
 418          * will always meet same 4gb region requirement.
 419          * Actual requirement is not alignment, but we need start and end of
 420          * DMA address must have same upper 32 bit address.
 421          */
 422
 423         if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
 424                                            sense_sz)) {
 425                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 426                               fusion->sense_phys_addr);
 427                 fusion->sense = NULL;
 428                 dma_pool_destroy(fusion->sense_dma_pool);
 429
 430                 fusion->sense_dma_pool =
 431                         dma_pool_create("mr_sense_align", &instance->pdev->dev,
 432                                         sense_sz, roundup_pow_of_two(sense_sz),
 433                                         0);
 434                 if (!fusion->sense_dma_pool) {
 435                         dev_err(&instance->pdev->dev,
 436                                 "Failed from %s %d\n",  __func__, __LINE__);
 437                         return -ENOMEM;
 438                 }
 439                 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 440                                                GFP_KERNEL,
 441                                                &fusion->sense_phys_addr);
 442                 if (!fusion->sense) {
 443                         dev_err(&instance->pdev->dev,
 444                                 "failed from %s %d\n",  __func__, __LINE__);
 445                         return -ENOMEM;
 446                 }
 447         }
 448
 449         /*
 450          * Allocate and attach a frame to each of the commands in cmd_list
 451          */
 452         for (i = 0; i < max_cmd; i++) {
 453                 cmd = fusion->cmd_list[i];
 454                 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
 455                                         GFP_KERNEL, &cmd->sg_frame_phys_addr);
 456
 457                 offset = SCSI_SENSE_BUFFERSIZE * i;
 458                 cmd->sense = (u8 *)fusion->sense + offset;
 459                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 460
 461                 if (!cmd->sg_frame) {
 462                         dev_err(&instance->pdev->dev,
 463                                 "Failed from %s %d\n",  __func__, __LINE__);
 464                         return -ENOMEM;
 465                 }
 466         }
 467
 468         /* create sense buffer for the raid 1/10 fp */
 469         for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
 470                 cmd = fusion->cmd_list[i];
 471                 offset = SCSI_SENSE_BUFFERSIZE * i;
 472                 cmd->sense = (u8 *)fusion->sense + offset;
 473                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 474
 475         }
 476
 477         return 0;
 478 }
 479
 480 int
 481 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
 482 {
 483         u32 max_mpt_cmd, i, j;
 484         struct fusion_context *fusion;
 485
 486         fusion = instance->ctrl_context;
 487
 488         max_mpt_cmd = instance->max_mpt_cmds;
 489
 490         /*
 491          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
 492          * Allocate the dynamic array first and then allocate individual
 493          * commands.
 494          */
 495         fusion->cmd_list =
 496                 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *),
 497                         GFP_KERNEL);
 498         if (!fusion->cmd_list) {
 499                 dev_err(&instance->pdev->dev,
 500                         "Failed from %s %d\n",  __func__, __LINE__);
 501                 return -ENOMEM;
 502         }
 503
 504         for (i = 0; i < max_mpt_cmd; i++) {
 505                 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
 506                                               GFP_KERNEL);
 507                 if (!fusion->cmd_list[i]) {
 508                         for (j = 0; j < i; j++)
 509                                 kfree(fusion->cmd_list[j]);
 510                         kfree(fusion->cmd_list);
 511                         dev_err(&instance->pdev->dev,
 512                                 "Failed from %s %d\n",  __func__, __LINE__);
 513                         return -ENOMEM;
 514                 }
 515         }
 516
 517         return 0;
 518 }
 519 int
 520 megasas_alloc_request_fusion(struct megasas_instance *instance)
 521 {
 522         struct fusion_context *fusion;
 523
 524         fusion = instance->ctrl_context;
 525
 526 retry_alloc:
 527         fusion->io_request_frames_pool =
 528                         dma_pool_create("mr_ioreq", &instance->pdev->dev,
 529                                 fusion->io_frames_alloc_sz, 16, 0);
 530
 531         if (!fusion->io_request_frames_pool) {
 532                 dev_err(&instance->pdev->dev,
 533                         "Failed from %s %d\n",  __func__, __LINE__);
 534                 return -ENOMEM;
 535         }
 536
 537         fusion->io_request_frames =
 538                         dma_pool_alloc(fusion->io_request_frames_pool,
 539                                 GFP_KERNEL, &fusion->io_request_frames_phys);
 540         if (!fusion->io_request_frames) {
 541                 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
 542                         instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
 543                         dma_pool_destroy(fusion->io_request_frames_pool);
 544                         megasas_configure_queue_sizes(instance);
 545                         goto retry_alloc;
 546                 } else {
 547                         dev_err(&instance->pdev->dev,
 548                                 "Failed from %s %d\n",  __func__, __LINE__);
 549                         return -ENOMEM;
 550                 }
 551         }
 552
 553         if (!megasas_check_same_4gb_region(instance,
 554                                            fusion->io_request_frames_phys,
 555                                            fusion->io_frames_alloc_sz)) {
 556                 dma_pool_free(fusion->io_request_frames_pool,
 557                               fusion->io_request_frames,
 558                               fusion->io_request_frames_phys);
 559                 fusion->io_request_frames = NULL;
 560                 dma_pool_destroy(fusion->io_request_frames_pool);
 561
 562                 fusion->io_request_frames_pool =
 563                         dma_pool_create("mr_ioreq_align",
 564                                         &instance->pdev->dev,
 565                                         fusion->io_frames_alloc_sz,
 566                                         roundup_pow_of_two(fusion->io_frames_alloc_sz),
 567                                         0);
 568
 569                 if (!fusion->io_request_frames_pool) {
 570                         dev_err(&instance->pdev->dev,
 571                                 "Failed from %s %d\n",  __func__, __LINE__);
 572                         return -ENOMEM;
 573                 }
 574
 575                 fusion->io_request_frames =
 576                         dma_pool_alloc(fusion->io_request_frames_pool,
 577                                        GFP_KERNEL,
 578                                        &fusion->io_request_frames_phys);
 579
 580                 if (!fusion->io_request_frames) {
 581                         dev_err(&instance->pdev->dev,
 582                                 "Failed from %s %d\n",  __func__, __LINE__);
 583                         return -ENOMEM;
 584                 }
 585         }
 586
 587         fusion->req_frames_desc =
 588                 dma_alloc_coherent(&instance->pdev->dev,
 589                                    fusion->request_alloc_sz,
 590                                    &fusion->req_frames_desc_phys, GFP_KERNEL);
 591         if (!fusion->req_frames_desc) {
 592                 dev_err(&instance->pdev->dev,
 593                         "Failed from %s %d\n",  __func__, __LINE__);
 594                 return -ENOMEM;
 595         }
 596
 597         return 0;
 598 }
 599
 600 int
 601 megasas_alloc_reply_fusion(struct megasas_instance *instance)
 602 {
 603         int i, count;
 604         struct fusion_context *fusion;
 605         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 606         fusion = instance->ctrl_context;
 607
 608         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 609         fusion->reply_frames_desc_pool =
 610                         dma_pool_create("mr_reply", &instance->pdev->dev,
 611                                 fusion->reply_alloc_sz * count, 16, 0);
 612
 613         if (!fusion->reply_frames_desc_pool) {
 614                 dev_err(&instance->pdev->dev,
 615                         "Failed from %s %d\n",  __func__, __LINE__);
 616                 return -ENOMEM;
 617         }
 618
 619         fusion->reply_frames_desc[0] =
 620                 dma_pool_alloc(fusion->reply_frames_desc_pool,
 621                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
 622         if (!fusion->reply_frames_desc[0]) {
 623                 dev_err(&instance->pdev->dev,
 624                         "Failed from %s %d\n",  __func__, __LINE__);
 625                 return -ENOMEM;
 626         }
 627
 628         if (!megasas_check_same_4gb_region(instance,
 629                                            fusion->reply_frames_desc_phys[0],
 630                                            (fusion->reply_alloc_sz * count))) {
 631                 dma_pool_free(fusion->reply_frames_desc_pool,
 632                               fusion->reply_frames_desc[0],
 633                               fusion->reply_frames_desc_phys[0]);
 634                 fusion->reply_frames_desc[0] = NULL;
 635                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 636
 637                 fusion->reply_frames_desc_pool =
 638                         dma_pool_create("mr_reply_align",
 639                                         &instance->pdev->dev,
 640                                         fusion->reply_alloc_sz * count,
 641                                         roundup_pow_of_two(fusion->reply_alloc_sz * count),
 642                                         0);
 643
 644                 if (!fusion->reply_frames_desc_pool) {
 645                         dev_err(&instance->pdev->dev,
 646                                 "Failed from %s %d\n",  __func__, __LINE__);
 647                         return -ENOMEM;
 648                 }
 649
 650                 fusion->reply_frames_desc[0] =
 651                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 652                                        GFP_KERNEL,
 653                                        &fusion->reply_frames_desc_phys[0]);
 654
 655                 if (!fusion->reply_frames_desc[0]) {
 656                         dev_err(&instance->pdev->dev,
 657                                 "Failed from %s %d\n",  __func__, __LINE__);
 658                         return -ENOMEM;
 659                 }
 660         }
 661
 662         reply_desc = fusion->reply_frames_desc[0];
 663         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 664                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 665
 666         /* This is not a rdpq mode, but driver still populate
 667          * reply_frame_desc array to use same msix index in ISR path.
 668          */
 669         for (i = 0; i < (count - 1); i++)
 670                 fusion->reply_frames_desc[i + 1] =
 671                         fusion->reply_frames_desc[i] +
 672                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
 673
 674         return 0;
 675 }
 676
 677 int
 678 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 679 {
 680         int i, j, k, msix_count;
 681         struct fusion_context *fusion;
 682         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 683         union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
 684         dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
 685         u8 dma_alloc_count, abs_index;
 686         u32 chunk_size, array_size, offset;
 687
 688         fusion = instance->ctrl_context;
 689         chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
 690         array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
 691                      MAX_MSIX_QUEUES_FUSION;
 692
 693         fusion->rdpq_virt = dma_alloc_coherent(&instance->pdev->dev,
 694                                                array_size, &fusion->rdpq_phys,
 695                                                GFP_KERNEL);
 696         if (!fusion->rdpq_virt) {
 697                 dev_err(&instance->pdev->dev,
 698                         "Failed from %s %d\n",  __func__, __LINE__);
 699                 return -ENOMEM;
 700         }
 701
 702         msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 703
 704         fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
 705                                                          &instance->pdev->dev,
 706                                                          chunk_size, 16, 0);
 707         fusion->reply_frames_desc_pool_align =
 708                                 dma_pool_create("mr_rdpq_align",
 709                                                 &instance->pdev->dev,
 710                                                 chunk_size,
 711                                                 roundup_pow_of_two(chunk_size),
 712                                                 0);
 713
 714         if (!fusion->reply_frames_desc_pool ||
 715             !fusion->reply_frames_desc_pool_align) {
 716                 dev_err(&instance->pdev->dev,
 717                         "Failed from %s %d\n",  __func__, __LINE__);
 718                 return -ENOMEM;
 719         }
 720
 721 /*
 722  * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
 723  * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
 724  * within 4GB boundary and also reply queues in a set must have same
 725  * upper 32-bits in their memory address. so here driver is allocating the
 726  * DMA'able memory for reply queues according. Driver uses limitation of
 727  * VENTURA_SERIES to manage INVADER_SERIES as well.
 728  */
 729         dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
 730
 731         for (i = 0; i < dma_alloc_count; i++) {
 732                 rdpq_chunk_virt[i] =
 733                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 734                                        GFP_KERNEL, &rdpq_chunk_phys[i]);
 735                 if (!rdpq_chunk_virt[i]) {
 736                         dev_err(&instance->pdev->dev,
 737                                 "Failed from %s %d\n",  __func__, __LINE__);
 738                         return -ENOMEM;
 739                 }
 740                 /* reply desc pool requires to be in same 4 gb region.
 741                  * Below function will check this.
 742                  * In case of failure, new pci pool will be created with updated
 743                  * alignment.
 744                  * For RDPQ buffers, driver always allocate two separate pci pool.
 745                  * Alignment will be used such a way that next allocation if
 746                  * success, will always meet same 4gb region requirement.
 747                  * rdpq_tracker keep track of each buffer's physical,
 748                  * virtual address and pci pool descriptor. It will help driver
 749                  * while freeing the resources.
 750                  *
 751                  */
 752                 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
 753                                                    chunk_size)) {
 754                         dma_pool_free(fusion->reply_frames_desc_pool,
 755                                       rdpq_chunk_virt[i],
 756                                       rdpq_chunk_phys[i]);
 757
 758                         rdpq_chunk_virt[i] =
 759                                 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
 760                                                GFP_KERNEL, &rdpq_chunk_phys[i]);
 761                         if (!rdpq_chunk_virt[i]) {
 762                                 dev_err(&instance->pdev->dev,
 763                                         "Failed from %s %d\n",
 764                                         __func__, __LINE__);
 765                                 return -ENOMEM;
 766                         }
 767                         fusion->rdpq_tracker[i].dma_pool_ptr =
 768                                         fusion->reply_frames_desc_pool_align;
 769                 } else {
 770                         fusion->rdpq_tracker[i].dma_pool_ptr =
 771                                         fusion->reply_frames_desc_pool;
 772                 }
 773
 774                 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
 775                 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
 776         }
 777
 778         for (k = 0; k < dma_alloc_count; k++) {
 779                 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
 780                         abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
 781
 782                         if (abs_index == msix_count)
 783                                 break;
 784                         offset = fusion->reply_alloc_sz * i;
 785                         fusion->rdpq_virt[abs_index].RDPQBaseAddress =
 786                                         cpu_to_le64(rdpq_chunk_phys[k] + offset);
 787                         fusion->reply_frames_desc_phys[abs_index] =
 788                                         rdpq_chunk_phys[k] + offset;
 789                         fusion->reply_frames_desc[abs_index] =
 790                                         (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
 791
 792                         reply_desc = fusion->reply_frames_desc[abs_index];
 793                         for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
 794                                 reply_desc->Words = ULLONG_MAX;
 795                 }
 796         }
 797
 798         return 0;
 799 }
 800
 801 static void
 802 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 803
 804         int i;
 805         struct fusion_context *fusion;
 806
 807         fusion = instance->ctrl_context;
 808
 809         for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
 810                 if (fusion->rdpq_tracker[i].pool_entry_virt)
 811                         dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
 812                                       fusion->rdpq_tracker[i].pool_entry_virt,
 813                                       fusion->rdpq_tracker[i].pool_entry_phys);
 814
 815         }
 816
 817         dma_pool_destroy(fusion->reply_frames_desc_pool);
 818         dma_pool_destroy(fusion->reply_frames_desc_pool_align);
 819
 820         if (fusion->rdpq_virt)
 821                 dma_free_coherent(&instance->pdev->dev,
 822                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 823                         fusion->rdpq_virt, fusion->rdpq_phys);
 824 }
 825
 826 static void
 827 megasas_free_reply_fusion(struct megasas_instance *instance) {
 828
 829         struct fusion_context *fusion;
 830
 831         fusion = instance->ctrl_context;
 832
 833         if (fusion->reply_frames_desc[0])
 834                 dma_pool_free(fusion->reply_frames_desc_pool,
 835                         fusion->reply_frames_desc[0],
 836                         fusion->reply_frames_desc_phys[0]);
 837
 838         dma_pool_destroy(fusion->reply_frames_desc_pool);
 839
 840 }
 841
 842
 843 /**
 844  * megasas_alloc_cmds_fusion -  Allocates the command packets
 845  * @instance:           Adapter soft state
 846  *
 847  *
 848  * Each frame has a 32-bit field called context. This context is used to get
 849  * back the megasas_cmd_fusion from the frame when a frame gets completed
 850  * In this driver, the 32 bit values are the indices into an array cmd_list.
 851  * This array is used only to look up the megasas_cmd_fusion given the context.
 852  * The free commands themselves are maintained in a linked list called cmd_pool.
 853  *
 854  * cmds are formed in the io_request and sg_frame members of the
 855  * megasas_cmd_fusion. The context field is used to get a request descriptor
 856  * and is used as SMID of the cmd.
 857  * SMID value range is from 1 to max_fw_cmds.
 858  */
 859 int
 860 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 861 {
 862         int i;
 863         struct fusion_context *fusion;
 864         struct megasas_cmd_fusion *cmd;
 865         u32 offset;
 866         dma_addr_t io_req_base_phys;
 867         u8 *io_req_base;
 868
 869
 870         fusion = instance->ctrl_context;
 871
 872         if (megasas_alloc_request_fusion(instance))
 873                 goto fail_exit;
 874
 875         if (instance->is_rdpq) {
 876                 if (megasas_alloc_rdpq_fusion(instance))
 877                         goto fail_exit;
 878         } else
 879                 if (megasas_alloc_reply_fusion(instance))
 880                         goto fail_exit;
 881
 882         if (megasas_alloc_cmdlist_fusion(instance))
 883                 goto fail_exit;
 884
 885         dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
 886                  instance->max_fw_cmds);
 887
 888         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 889         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 890         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 891
 892         /*
 893          * Add all the commands to command pool (fusion->cmd_pool)
 894          */
 895
 896         /* SMID 0 is reserved. Set SMID/index from 1 */
 897         for (i = 0; i < instance->max_mpt_cmds; i++) {
 898                 cmd = fusion->cmd_list[i];
 899                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
 900                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
 901                 cmd->index = i + 1;
 902                 cmd->scmd = NULL;
 903                 cmd->sync_cmd_idx =
 904                 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
 905                                 (i - instance->max_scsi_cmds) :
 906                                 (u32)ULONG_MAX; /* Set to Invalid */
 907                 cmd->instance = instance;
 908                 cmd->io_request =
 909                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
 910                   (io_req_base + offset);
 911                 memset(cmd->io_request, 0,
 912                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 913                 cmd->io_request_phys_addr = io_req_base_phys + offset;
 914                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 915         }
 916
 917         if (megasas_create_sg_sense_fusion(instance))
 918                 goto fail_exit;
 919
 920         return 0;
 921
 922 fail_exit:
 923         megasas_free_cmds_fusion(instance);
 924         return -ENOMEM;
 925 }
 926
 927 /**
 928  * wait_and_poll -      Issues a polling command
 929  * @instance:                   Adapter soft state
 930  * @cmd:                        Command packet to be issued
 931  *
 932  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 933  */
 934 int
 935 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 936         int seconds)
 937 {
 938         int i;
 939         struct megasas_header *frame_hdr = &cmd->frame->hdr;
 940
 941         u32 msecs = seconds * 1000;
 942
 943         /*
 944          * Wait for cmd_status to change
 945          */
 946         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
 947                 rmb();
 948                 msleep(20);
 949         }
 950
 951         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
 952                 return DCMD_TIMEOUT;
 953         else if (frame_hdr->cmd_status == MFI_STAT_OK)
 954                 return DCMD_SUCCESS;
 955         else
 956                 return DCMD_FAILED;
 957 }
 958
 959 /**
 960  * megasas_ioc_init_fusion -    Initializes the FW
 961  * @instance:           Adapter soft state
 962  *
 963  * Issues the IOC Init cmd
 964  */
 965 int
 966 megasas_ioc_init_fusion(struct megasas_instance *instance)
 967 {
 968         struct megasas_init_frame *init_frame;
 969         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
 970         dma_addr_t      ioc_init_handle;
 971         struct megasas_cmd *cmd;
 972         u8 ret, cur_rdpq_mode;
 973         struct fusion_context *fusion;
 974         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
 975         int i;
 976         struct megasas_header *frame_hdr;
 977         const char *sys_info;
 978         MFI_CAPABILITIES *drv_ops;
 979         u32 scratch_pad_1;
 980         ktime_t time;
 981         bool cur_fw_64bit_dma_capable;
 982
 983         fusion = instance->ctrl_context;
 984
 985         ioc_init_handle = fusion->ioc_init_request_phys;
 986         IOCInitMessage = fusion->ioc_init_request;
 987
 988         cmd = fusion->ioc_init_cmd;
 989
 990         scratch_pad_1 = megasas_readl
 991                 (instance, &instance->reg_set->outbound_scratch_pad_1);
 992
 993         cur_rdpq_mode = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
 994
 995         if (instance->adapter_type == INVADER_SERIES) {
 996                 cur_fw_64bit_dma_capable =
 997                         (scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
 998
 999                 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
1000                         dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1001                                 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1002                         megaraid_sas_kill_hba(instance);
1003                         ret = 1;
1004                         goto fail_fw_init;
1005                 }
1006         }
1007
1008         if (instance->is_rdpq && !cur_rdpq_mode) {
1009                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1010                         " from RDPQ mode to non RDPQ mode\n");
1011                 ret = 1;
1012                 goto fail_fw_init;
1013         }
1014
1015         instance->fw_sync_cache_support = (scratch_pad_1 &
1016                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1017         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1018                  instance->fw_sync_cache_support ? "Yes" : "No");
1019
1020         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1021
1022         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1023         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1024         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1025         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1026         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1027
1028         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1029         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1030                         cpu_to_le64(fusion->rdpq_phys) :
1031                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1032         IOCInitMessage->MsgFlags = instance->is_rdpq ?
1033                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1034         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1035         IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1036         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1037         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1038
1039         time = ktime_get_real();
1040         /* Convert to milliseconds as per FW requirement */
1041         IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1042
1043         init_frame = (struct megasas_init_frame *)cmd->frame;
1044         memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1045
1046         frame_hdr = &cmd->frame->hdr;
1047         frame_hdr->cmd_status = 0xFF;
1048         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1049
1050         init_frame->cmd = MFI_CMD_INIT;
1051         init_frame->cmd_status = 0xFF;
1052
1053         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1054
1055         /* driver support Extended MSIX */
1056         if (instance->adapter_type >= INVADER_SERIES)
1057                 drv_ops->mfi_capabilities.support_additional_msix = 1;
1058         /* driver supports HA / Remote LUN over Fast Path interface */
1059         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1060
1061         drv_ops->mfi_capabilities.support_max_255lds = 1;
1062         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1063         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1064
1065         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1066                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1067
1068         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1069         if (!dual_qdepth_disable)
1070                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1071
1072         drv_ops->mfi_capabilities.support_qd_throttling = 1;
1073         drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1074         drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1075         drv_ops->mfi_capabilities.support_fw_exposed_dev_list = 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         struct fusion_context *fusion;
1333         struct MR_LD_TARGET_SYNC *ci = NULL;
1334         struct MR_DRV_RAID_MAP_ALL *map;
1335         struct MR_LD_RAID  *raid;
1336         struct MR_LD_TARGET_SYNC *ld_sync;
1337         dma_addr_t ci_h = 0;
1338         u32 size_map_info;
1339
1340         cmd = megasas_get_cmd(instance);
1341
1342         if (!cmd) {
1343                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1344                 return -ENOMEM;
1345         }
1346
1347         fusion = instance->ctrl_context;
1348
1349         if (!fusion) {
1350                 megasas_return_cmd(instance, cmd);
1351                 return 1;
1352         }
1353
1354         map = fusion->ld_drv_map[instance->map_id & 1];
1355
1356         num_lds = le16_to_cpu(map->raidMap.ldCount);
1357
1358         dcmd = &cmd->frame->dcmd;
1359
1360         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1361
1362         ci = (struct MR_LD_TARGET_SYNC *)
1363           fusion->ld_map[(instance->map_id - 1) & 1];
1364         memset(ci, 0, fusion->max_map_sz);
1365
1366         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1367
1368         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1369
1370         for (i = 0; i < num_lds; i++, ld_sync++) {
1371                 raid = MR_LdRaidGet(i, map);
1372                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1373                 ld_sync->seqNum = raid->seqNum;
1374         }
1375
1376         size_map_info = fusion->current_map_sz;
1377
1378         dcmd->cmd = MFI_CMD_DCMD;
1379         dcmd->cmd_status = 0xFF;
1380         dcmd->sge_count = 1;
1381         dcmd->flags = MFI_FRAME_DIR_WRITE;
1382         dcmd->timeout = 0;
1383         dcmd->pad_0 = 0;
1384         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1385         dcmd->mbox.b[0] = num_lds;
1386         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1387         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1388
1389         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1390
1391         instance->map_update_cmd = cmd;
1392
1393         instance->instancet->issue_dcmd(instance, cmd);
1394
1395         return 0;
1396 }
1397
1398 /*
1399  * meagasas_display_intel_branding - Display branding string
1400  * @instance: per adapter object
1401  *
1402  * Return nothing.
1403  */
1404 static void
1405 megasas_display_intel_branding(struct megasas_instance *instance)
1406 {
1407         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1408                 return;
1409
1410         switch (instance->pdev->device) {
1411         case PCI_DEVICE_ID_LSI_INVADER:
1412                 switch (instance->pdev->subsystem_device) {
1413                 case MEGARAID_INTEL_RS3DC080_SSDID:
1414                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1415                                 instance->host->host_no,
1416                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1417                         break;
1418                 case MEGARAID_INTEL_RS3DC040_SSDID:
1419                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1420                                 instance->host->host_no,
1421                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1422                         break;
1423                 case MEGARAID_INTEL_RS3SC008_SSDID:
1424                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1425                                 instance->host->host_no,
1426                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1427                         break;
1428                 case MEGARAID_INTEL_RS3MC044_SSDID:
1429                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1430                                 instance->host->host_no,
1431                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1432                         break;
1433                 default:
1434                         break;
1435                 }
1436                 break;
1437         case PCI_DEVICE_ID_LSI_FURY:
1438                 switch (instance->pdev->subsystem_device) {
1439                 case MEGARAID_INTEL_RS3WC080_SSDID:
1440                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1441                                 instance->host->host_no,
1442                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1443                         break;
1444                 case MEGARAID_INTEL_RS3WC040_SSDID:
1445                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1446                                 instance->host->host_no,
1447                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1448                         break;
1449                 default:
1450                         break;
1451                 }
1452                 break;
1453         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1454         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1455                 switch (instance->pdev->subsystem_device) {
1456                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1457                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1458                                 instance->host->host_no,
1459                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1460                         break;
1461                 default:
1462                         break;
1463                 }
1464                 break;
1465         default:
1466                 break;
1467         }
1468 }
1469
1470 /**
1471  * megasas_allocate_raid_maps - Allocate memory for RAID maps
1472  * @instance:                           Adapter soft state
1473  *
1474  * return:                              if success: return 0
1475  *                                      failed:  return -ENOMEM
1476  */
1477 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1478 {
1479         struct fusion_context *fusion;
1480         int i = 0;
1481
1482         fusion = instance->ctrl_context;
1483
1484         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1485
1486         for (i = 0; i < 2; i++) {
1487                 fusion->ld_map[i] = NULL;
1488
1489                 fusion->ld_drv_map[i] = (void *)
1490                         __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1491                                          fusion->drv_map_pages);
1492
1493                 if (!fusion->ld_drv_map[i]) {
1494                         fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1495
1496                         if (!fusion->ld_drv_map[i]) {
1497                                 dev_err(&instance->pdev->dev,
1498                                         "Could not allocate memory for local map"
1499                                         " size requested: %d\n",
1500                                         fusion->drv_map_sz);
1501                                 goto ld_drv_map_alloc_fail;
1502                         }
1503                 }
1504         }
1505
1506         for (i = 0; i < 2; i++) {
1507                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1508                                                        fusion->max_map_sz,
1509                                                        &fusion->ld_map_phys[i],
1510                                                        GFP_KERNEL);
1511                 if (!fusion->ld_map[i]) {
1512                         dev_err(&instance->pdev->dev,
1513                                 "Could not allocate memory for map info %s:%d\n",
1514                                 __func__, __LINE__);
1515                         goto ld_map_alloc_fail;
1516                 }
1517         }
1518
1519         return 0;
1520
1521 ld_map_alloc_fail:
1522         for (i = 0; i < 2; i++) {
1523                 if (fusion->ld_map[i])
1524                         dma_free_coherent(&instance->pdev->dev,
1525                                           fusion->max_map_sz,
1526                                           fusion->ld_map[i],
1527                                           fusion->ld_map_phys[i]);
1528         }
1529
1530 ld_drv_map_alloc_fail:
1531         for (i = 0; i < 2; i++) {
1532                 if (fusion->ld_drv_map[i]) {
1533                         if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1534                                 vfree(fusion->ld_drv_map[i]);
1535                         else
1536                                 free_pages((ulong)fusion->ld_drv_map[i],
1537                                            fusion->drv_map_pages);
1538                 }
1539         }
1540
1541         return -ENOMEM;
1542 }
1543
1544 /**
1545  * megasas_configure_queue_sizes -      Calculate size of request desc queue,
1546  *                                      reply desc queue,
1547  *                                      IO request frame queue, set can_queue.
1548  * @instance:                           Adapter soft state
1549  * @return:                             void
1550  */
1551 static inline
1552 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1553 {
1554         struct fusion_context *fusion;
1555         u16 max_cmd;
1556
1557         fusion = instance->ctrl_context;
1558         max_cmd = instance->max_fw_cmds;
1559
1560         if (instance->adapter_type >= VENTURA_SERIES)
1561                 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1562         else
1563                 instance->max_mpt_cmds = instance->max_fw_cmds;
1564
1565         instance->max_scsi_cmds = instance->max_fw_cmds - instance->max_mfi_cmds;
1566         instance->cur_can_queue = instance->max_scsi_cmds;
1567         instance->host->can_queue = instance->cur_can_queue;
1568
1569         fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1570
1571         fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1572                                           instance->max_mpt_cmds;
1573         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1574                                         (fusion->reply_q_depth);
1575         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1576                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1577                  * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1578 }
1579
1580 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1581 {
1582         struct fusion_context *fusion;
1583         struct megasas_cmd *cmd;
1584
1585         fusion = instance->ctrl_context;
1586
1587         cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1588
1589         if (!cmd) {
1590                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1591                         __func__, __LINE__);
1592                 return -ENOMEM;
1593         }
1594
1595         cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1596                                         IOC_INIT_FRAME_SIZE,
1597                                         &cmd->frame_phys_addr, GFP_KERNEL);
1598
1599         if (!cmd->frame) {
1600                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1601                         __func__, __LINE__);
1602                 kfree(cmd);
1603                 return -ENOMEM;
1604         }
1605
1606         fusion->ioc_init_cmd = cmd;
1607         return 0;
1608 }
1609
1610 /**
1611  * megasas_free_ioc_init_cmd -  Free IOC INIT command frame
1612  * @instance:           Adapter soft state
1613  */
1614 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1615 {
1616         struct fusion_context *fusion;
1617
1618         fusion = instance->ctrl_context;
1619
1620         if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1621                 dma_free_coherent(&instance->pdev->dev,
1622                                   IOC_INIT_FRAME_SIZE,
1623                                   fusion->ioc_init_cmd->frame,
1624                                   fusion->ioc_init_cmd->frame_phys_addr);
1625
1626         kfree(fusion->ioc_init_cmd);
1627 }
1628
1629 /**
1630  * megasas_init_adapter_fusion -        Initializes the FW
1631  * @instance:           Adapter soft state
1632  *
1633  * This is the main function for initializing firmware.
1634  */
1635 u32
1636 megasas_init_adapter_fusion(struct megasas_instance *instance)
1637 {
1638         struct fusion_context *fusion;
1639         u32 scratch_pad_1;
1640         int i = 0, count;
1641
1642         fusion = instance->ctrl_context;
1643
1644         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1645
1646         /*
1647          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1648          */
1649         instance->max_mfi_cmds =
1650                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1651
1652         megasas_configure_queue_sizes(instance);
1653
1654         scratch_pad_1 = megasas_readl(instance,
1655                                       &instance->reg_set->outbound_scratch_pad_1);
1656         /* If scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1657          * Firmware support extended IO chain frame which is 4 times more than
1658          * legacy Firmware.
1659          * Legacy Firmware - Frame size is (8 * 128) = 1K
1660          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1661          */
1662         if (scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1663                 instance->max_chain_frame_sz =
1664                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1665                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1666         else
1667                 instance->max_chain_frame_sz =
1668                         ((scratch_pad_1 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1669                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1670
1671         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1672                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1673                         instance->max_chain_frame_sz,
1674                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1675                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1676         }
1677
1678         fusion->max_sge_in_main_msg =
1679                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1680                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1681
1682         fusion->max_sge_in_chain =
1683                 instance->max_chain_frame_sz
1684                         / sizeof(union MPI2_SGE_IO_UNION);
1685
1686         instance->max_num_sge =
1687                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1688                         + fusion->max_sge_in_chain - 2);
1689
1690         /* Used for pass thru MFI frame (DCMD) */
1691         fusion->chain_offset_mfi_pthru =
1692                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1693
1694         fusion->chain_offset_io_request =
1695                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1696                  sizeof(union MPI2_SGE_IO_UNION))/16;
1697
1698         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1699         for (i = 0 ; i < count; i++)
1700                 fusion->last_reply_idx[i] = 0;
1701
1702         /*
1703          * For fusion adapters, 3 commands for IOCTL and 8 commands
1704          * for driver's internal DCMDs.
1705          */
1706         instance->max_scsi_cmds = instance->max_fw_cmds -
1707                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1708                                 MEGASAS_FUSION_IOCTL_CMDS);
1709         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1710
1711         if (megasas_alloc_ioc_init_frame(instance))
1712                 return 1;
1713
1714         /*
1715          * Allocate memory for descriptors
1716          * Create a pool of commands
1717          */
1718         if (megasas_alloc_cmds(instance))
1719                 goto fail_alloc_mfi_cmds;
1720         if (megasas_alloc_cmds_fusion(instance))
1721                 goto fail_alloc_cmds;
1722
1723         if (megasas_ioc_init_fusion(instance))
1724                 goto fail_ioc_init;
1725
1726         megasas_display_intel_branding(instance);
1727         if (megasas_get_ctrl_info(instance)) {
1728                 dev_err(&instance->pdev->dev,
1729                         "Could not get controller info. Fail from %s %d\n",
1730                         __func__, __LINE__);
1731                 goto fail_ioc_init;
1732         }
1733
1734         instance->flag_ieee = 1;
1735         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1736         fusion->fast_path_io = 0;
1737
1738         if (megasas_allocate_raid_maps(instance))
1739                 goto fail_ioc_init;
1740
1741         if (!megasas_get_map_info(instance))
1742                 megasas_sync_map_info(instance);
1743
1744         return 0;
1745
1746 fail_ioc_init:
1747         megasas_free_cmds_fusion(instance);
1748 fail_alloc_cmds:
1749         megasas_free_cmds(instance);
1750 fail_alloc_mfi_cmds:
1751         megasas_free_ioc_init_cmd(instance);
1752         return 1;
1753 }
1754
1755 /**
1756  * megasas_fault_detect_work    -       Worker function of
1757  *                                      FW fault handling workqueue.
1758  */
1759 static void
1760 megasas_fault_detect_work(struct work_struct *work)
1761 {
1762         struct megasas_instance *instance =
1763                 container_of(work, struct megasas_instance,
1764                              fw_fault_work.work);
1765         u32 fw_state, dma_state, status;
1766
1767         /* Check the fw state */
1768         fw_state = instance->instancet->read_fw_status_reg(instance) &
1769                         MFI_STATE_MASK;
1770
1771         if (fw_state == MFI_STATE_FAULT) {
1772                 dma_state = instance->instancet->read_fw_status_reg(instance) &
1773                                 MFI_STATE_DMADONE;
1774                 /* Start collecting crash, if DMA bit is done */
1775                 if (instance->crash_dump_drv_support &&
1776                     instance->crash_dump_app_support && dma_state) {
1777                         megasas_fusion_crash_dump(instance);
1778                 } else {
1779                         if (instance->unload == 0) {
1780                                 status = megasas_reset_fusion(instance->host, 0);
1781                                 if (status != SUCCESS) {
1782                                         dev_err(&instance->pdev->dev,
1783                                                 "Failed from %s %d, do not re-arm timer\n",
1784                                                 __func__, __LINE__);
1785                                         return;
1786                                 }
1787                         }
1788                 }
1789         }
1790
1791         if (instance->fw_fault_work_q)
1792                 queue_delayed_work(instance->fw_fault_work_q,
1793                         &instance->fw_fault_work,
1794                         msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1795 }
1796
1797 int
1798 megasas_fusion_start_watchdog(struct megasas_instance *instance)
1799 {
1800         /* Check if the Fault WQ is already started */
1801         if (instance->fw_fault_work_q)
1802                 return SUCCESS;
1803
1804         INIT_DELAYED_WORK(&instance->fw_fault_work, megasas_fault_detect_work);
1805
1806         snprintf(instance->fault_handler_work_q_name,
1807                  sizeof(instance->fault_handler_work_q_name),
1808                  "poll_megasas%d_status", instance->host->host_no);
1809
1810         instance->fw_fault_work_q =
1811                 create_singlethread_workqueue(instance->fault_handler_work_q_name);
1812         if (!instance->fw_fault_work_q) {
1813                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1814                         __func__, __LINE__);
1815                 return FAILED;
1816         }
1817
1818         queue_delayed_work(instance->fw_fault_work_q,
1819                            &instance->fw_fault_work,
1820                            msecs_to_jiffies(MEGASAS_WATCHDOG_THREAD_INTERVAL));
1821
1822         return SUCCESS;
1823 }
1824
1825 void
1826 megasas_fusion_stop_watchdog(struct megasas_instance *instance)
1827 {
1828         struct workqueue_struct *wq;
1829
1830         if (instance->fw_fault_work_q) {
1831                 wq = instance->fw_fault_work_q;
1832                 instance->fw_fault_work_q = NULL;
1833                 if (!cancel_delayed_work_sync(&instance->fw_fault_work))
1834                         flush_workqueue(wq);
1835                 destroy_workqueue(wq);
1836         }
1837 }
1838
1839 /**
1840  * map_cmd_status -     Maps FW cmd status to OS cmd status
1841  * @cmd :               Pointer to cmd
1842  * @status :            status of cmd returned by FW
1843  * @ext_status :        ext status of cmd returned by FW
1844  */
1845
1846 void
1847 map_cmd_status(struct fusion_context *fusion,
1848                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1849                 u32 data_length, u8 *sense)
1850 {
1851         u8 cmd_type;
1852         int resid;
1853
1854         cmd_type = megasas_cmd_type(scmd);
1855         switch (status) {
1856
1857         case MFI_STAT_OK:
1858                 scmd->result = DID_OK << 16;
1859                 break;
1860
1861         case MFI_STAT_SCSI_IO_FAILED:
1862         case MFI_STAT_LD_INIT_IN_PROGRESS:
1863                 scmd->result = (DID_ERROR << 16) | ext_status;
1864                 break;
1865
1866         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1867
1868                 scmd->result = (DID_OK << 16) | ext_status;
1869                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1870                         memset(scmd->sense_buffer, 0,
1871                                SCSI_SENSE_BUFFERSIZE);
1872                         memcpy(scmd->sense_buffer, sense,
1873                                SCSI_SENSE_BUFFERSIZE);
1874                         scmd->result |= DRIVER_SENSE << 24;
1875                 }
1876
1877                 /*
1878                  * If the  IO request is partially completed, then MR FW will
1879                  * update "io_request->DataLength" field with actual number of
1880                  * bytes transferred.Driver will set residual bytes count in
1881                  * SCSI command structure.
1882                  */
1883                 resid = (scsi_bufflen(scmd) - data_length);
1884                 scsi_set_resid(scmd, resid);
1885
1886                 if (resid &&
1887                         ((cmd_type == READ_WRITE_LDIO) ||
1888                         (cmd_type == READ_WRITE_SYSPDIO)))
1889                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
1890                                 " requested/completed 0x%x/0x%x\n",
1891                                 status, scsi_bufflen(scmd), data_length);
1892                 break;
1893
1894         case MFI_STAT_LD_OFFLINE:
1895         case MFI_STAT_DEVICE_NOT_FOUND:
1896                 scmd->result = DID_BAD_TARGET << 16;
1897                 break;
1898         case MFI_STAT_CONFIG_SEQ_MISMATCH:
1899                 scmd->result = DID_IMM_RETRY << 16;
1900                 break;
1901         default:
1902                 scmd->result = DID_ERROR << 16;
1903                 break;
1904         }
1905 }
1906
1907 /**
1908  * megasas_is_prp_possible -
1909  * Checks if native NVMe PRPs can be built for the IO
1910  *
1911  * @instance:           Adapter soft state
1912  * @scmd:               SCSI command from the mid-layer
1913  * @sge_count:          scatter gather element count.
1914  *
1915  * Returns:             true: PRPs can be built
1916  *                      false: IEEE SGLs needs to be built
1917  */
1918 static bool
1919 megasas_is_prp_possible(struct megasas_instance *instance,
1920                         struct scsi_cmnd *scmd, int sge_count)
1921 {
1922         int i;
1923         u32 data_length = 0;
1924         struct scatterlist *sg_scmd;
1925         bool build_prp = false;
1926         u32 mr_nvme_pg_size;
1927
1928         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1929                                 MR_DEFAULT_NVME_PAGE_SIZE);
1930         data_length = scsi_bufflen(scmd);
1931         sg_scmd = scsi_sglist(scmd);
1932
1933         /*
1934          * NVMe uses one PRP for each page (or part of a page)
1935          * look at the data length - if 4 pages or less then IEEE is OK
1936          * if  > 5 pages then we need to build a native SGL
1937          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
1938          * if this first size in the page is >= the residual beyond 4 pages
1939          * then use IEEE, otherwise use native SGL
1940          */
1941
1942         if (data_length > (mr_nvme_pg_size * 5)) {
1943                 build_prp = true;
1944         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
1945                         (data_length <= (mr_nvme_pg_size * 5)))  {
1946                 /* check if 1st SG entry size is < residual beyond 4 pages */
1947                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
1948                         build_prp = true;
1949         }
1950
1951 /*
1952  * Below code detects gaps/holes in IO data buffers.
1953  * What does holes/gaps mean?
1954  * Any SGE except first one in a SGL starts at non NVME page size
1955  * aligned address OR Any SGE except last one in a SGL ends at
1956  * non NVME page size boundary.
1957  *
1958  * Driver has already informed block layer by setting boundary rules for
1959  * bio merging done at NVME page size boundary calling kernel API
1960  * blk_queue_virt_boundary inside slave_config.
1961  * Still there is possibility of IO coming with holes to driver because of
1962  * IO merging done by IO scheduler.
1963  *
1964  * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
1965  * IO scheduling so no IO merging.
1966  *
1967  * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
1968  * then sending IOs with holes.
1969  *
1970  * Though driver can request block layer to disable IO merging by calling-
1971  * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
1972  * user may tune sysfs parameter- nomerges again to 0 or 1.
1973  *
1974  * If in future IO scheduling is enabled with SCSI BLK MQ,
1975  * this algorithm to detect holes will be required in driver
1976  * for SCSI BLK MQ enabled case as well.
1977  *
1978  *
1979  */
1980         scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
1981                 if ((i != 0) && (i != (sge_count - 1))) {
1982                         if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
1983                             mega_mod64(sg_dma_address(sg_scmd),
1984                                        mr_nvme_pg_size)) {
1985                                 build_prp = false;
1986                                 atomic_inc(&instance->sge_holes_type1);
1987                                 break;
1988                         }
1989                 }
1990
1991                 if ((sge_count > 1) && (i == 0)) {
1992                         if ((mega_mod64((sg_dma_address(sg_scmd) +
1993                                         sg_dma_len(sg_scmd)),
1994                                         mr_nvme_pg_size))) {
1995                                 build_prp = false;
1996                                 atomic_inc(&instance->sge_holes_type2);
1997                                 break;
1998                         }
1999                 }
2000
2001                 if ((sge_count > 1) && (i == (sge_count - 1))) {
2002                         if (mega_mod64(sg_dma_address(sg_scmd),
2003                                        mr_nvme_pg_size)) {
2004                                 build_prp = false;
2005                                 atomic_inc(&instance->sge_holes_type3);
2006                                 break;
2007                         }
2008                 }
2009         }
2010
2011         return build_prp;
2012 }
2013
2014 /**
2015  * megasas_make_prp_nvme -
2016  * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
2017  *
2018  * @instance:           Adapter soft state
2019  * @scmd:               SCSI command from the mid-layer
2020  * @sgl_ptr:            SGL to be filled in
2021  * @cmd:                Fusion command frame
2022  * @sge_count:          scatter gather element count.
2023  *
2024  * Returns:             true: PRPs are built
2025  *                      false: IEEE SGLs needs to be built
2026  */
2027 static bool
2028 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
2029                       struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2030                       struct megasas_cmd_fusion *cmd, int sge_count)
2031 {
2032         int sge_len, offset, num_prp_in_chain = 0;
2033         struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
2034         u64 *ptr_sgl;
2035         dma_addr_t ptr_sgl_phys;
2036         u64 sge_addr;
2037         u32 page_mask, page_mask_result;
2038         struct scatterlist *sg_scmd;
2039         u32 first_prp_len;
2040         bool build_prp = false;
2041         int data_len = scsi_bufflen(scmd);
2042         u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
2043                                         MR_DEFAULT_NVME_PAGE_SIZE);
2044
2045         build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
2046
2047         if (!build_prp)
2048                 return false;
2049
2050         /*
2051          * Nvme has a very convoluted prp format.  One prp is required
2052          * for each page or partial page. Driver need to split up OS sg_list
2053          * entries if it is longer than one page or cross a page
2054          * boundary.  Driver also have to insert a PRP list pointer entry as
2055          * the last entry in each physical page of the PRP list.
2056          *
2057          * NOTE: The first PRP "entry" is actually placed in the first
2058          * SGL entry in the main message as IEEE 64 format.  The 2nd
2059          * entry in the main message is the chain element, and the rest
2060          * of the PRP entries are built in the contiguous pcie buffer.
2061          */
2062         page_mask = mr_nvme_pg_size - 1;
2063         ptr_sgl = (u64 *)cmd->sg_frame;
2064         ptr_sgl_phys = cmd->sg_frame_phys_addr;
2065         memset(ptr_sgl, 0, instance->max_chain_frame_sz);
2066
2067         /* Build chain frame element which holds all prps except first*/
2068         main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
2069             ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
2070
2071         main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2072         main_chain_element->NextChainOffset = 0;
2073         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2074                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
2075                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2076
2077         /* Build first prp, sge need not to be page aligned*/
2078         ptr_first_sgl = sgl_ptr;
2079         sg_scmd = scsi_sglist(scmd);
2080         sge_addr = sg_dma_address(sg_scmd);
2081         sge_len = sg_dma_len(sg_scmd);
2082
2083         offset = (u32)(sge_addr & page_mask);
2084         first_prp_len = mr_nvme_pg_size - offset;
2085
2086         ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2087         ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2088
2089         data_len -= first_prp_len;
2090
2091         if (sge_len > first_prp_len) {
2092                 sge_addr += first_prp_len;
2093                 sge_len -= first_prp_len;
2094         } else if (sge_len == first_prp_len) {
2095                 sg_scmd = sg_next(sg_scmd);
2096                 sge_addr = sg_dma_address(sg_scmd);
2097                 sge_len = sg_dma_len(sg_scmd);
2098         }
2099
2100         for (;;) {
2101                 offset = (u32)(sge_addr & page_mask);
2102
2103                 /* Put PRP pointer due to page boundary*/
2104                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2105                 if (unlikely(!page_mask_result)) {
2106                         scmd_printk(KERN_NOTICE,
2107                                     scmd, "page boundary ptr_sgl: 0x%p\n",
2108                                     ptr_sgl);
2109                         ptr_sgl_phys += 8;
2110                         *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2111                         ptr_sgl++;
2112                         num_prp_in_chain++;
2113                 }
2114
2115                 *ptr_sgl = cpu_to_le64(sge_addr);
2116                 ptr_sgl++;
2117                 ptr_sgl_phys += 8;
2118                 num_prp_in_chain++;
2119
2120                 sge_addr += mr_nvme_pg_size;
2121                 sge_len -= mr_nvme_pg_size;
2122                 data_len -= mr_nvme_pg_size;
2123
2124                 if (data_len <= 0)
2125                         break;
2126
2127                 if (sge_len > 0)
2128                         continue;
2129
2130                 sg_scmd = sg_next(sg_scmd);
2131                 sge_addr = sg_dma_address(sg_scmd);
2132                 sge_len = sg_dma_len(sg_scmd);
2133         }
2134
2135         main_chain_element->Length =
2136                         cpu_to_le32(num_prp_in_chain * sizeof(u64));
2137
2138         atomic_inc(&instance->prp_sgl);
2139         return build_prp;
2140 }
2141
2142 /**
2143  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
2144  * @instance:           Adapter soft state
2145  * @scp:                SCSI command from the mid-layer
2146  * @sgl_ptr:            SGL to be filled in
2147  * @cmd:                cmd we are working on
2148  * @sge_count           sge count
2149  *
2150  */
2151 static void
2152 megasas_make_sgl_fusion(struct megasas_instance *instance,
2153                         struct scsi_cmnd *scp,
2154                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2155                         struct megasas_cmd_fusion *cmd, int sge_count)
2156 {
2157         int i, sg_processed;
2158         struct scatterlist *os_sgl;
2159         struct fusion_context *fusion;
2160
2161         fusion = instance->ctrl_context;
2162
2163         if (instance->adapter_type >= INVADER_SERIES) {
2164                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2165                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2166                 sgl_ptr_end->Flags = 0;
2167         }
2168
2169         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2170                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2171                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2172                 sgl_ptr->Flags = 0;
2173                 if (instance->adapter_type >= INVADER_SERIES)
2174                         if (i == sge_count - 1)
2175                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2176                 sgl_ptr++;
2177                 sg_processed = i + 1;
2178
2179                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
2180                     (sge_count > fusion->max_sge_in_main_msg)) {
2181
2182                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2183                         if (instance->adapter_type >= INVADER_SERIES) {
2184                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2185                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2186                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2187                                         cmd->io_request->ChainOffset =
2188                                                 fusion->
2189                                                 chain_offset_io_request;
2190                                 else
2191                                         cmd->io_request->ChainOffset = 0;
2192                         } else
2193                                 cmd->io_request->ChainOffset =
2194                                         fusion->chain_offset_io_request;
2195
2196                         sg_chain = sgl_ptr;
2197                         /* Prepare chain element */
2198                         sg_chain->NextChainOffset = 0;
2199                         if (instance->adapter_type >= INVADER_SERIES)
2200                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2201                         else
2202                                 sg_chain->Flags =
2203                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2204                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2205                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2206                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2207
2208                         sgl_ptr =
2209                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2210                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2211                 }
2212         }
2213         atomic_inc(&instance->ieee_sgl);
2214 }
2215
2216 /**
2217  * megasas_make_sgl -   Build Scatter Gather List(SGLs)
2218  * @scp:                SCSI command pointer
2219  * @instance:           Soft instance of controller
2220  * @cmd:                Fusion command pointer
2221  *
2222  * This function will build sgls based on device type.
2223  * For nvme drives, there is different way of building sgls in nvme native
2224  * format- PRPs(Physical Region Page).
2225  *
2226  * Returns the number of sg lists actually used, zero if the sg lists
2227  * is NULL, or -ENOMEM if the mapping failed
2228  */
2229 static
2230 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2231                      struct megasas_cmd_fusion *cmd)
2232 {
2233         int sge_count;
2234         bool build_prp = false;
2235         struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2236
2237         sge_count = scsi_dma_map(scp);
2238
2239         if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2240                 return sge_count;
2241
2242         sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2243         if ((le16_to_cpu(cmd->io_request->IoFlags) &
2244             MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2245             (cmd->pd_interface == NVME_PD))
2246                 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2247                                                   cmd, sge_count);
2248
2249         if (!build_prp)
2250                 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2251                                         cmd, sge_count);
2252
2253         return sge_count;
2254 }
2255
2256 /**
2257  * megasas_set_pd_lba - Sets PD LBA
2258  * @cdb:                CDB
2259  * @cdb_len:            cdb length
2260  * @start_blk:          Start block of IO
2261  *
2262  * Used to set the PD LBA in CDB for FP IOs
2263  */
2264 void
2265 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2266                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2267                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2268 {
2269         struct MR_LD_RAID *raid;
2270         u16 ld;
2271         u64 start_blk = io_info->pdBlock;
2272         u8 *cdb = io_request->CDB.CDB32;
2273         u32 num_blocks = io_info->numBlocks;
2274         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2275
2276         /* Check if T10 PI (DIF) is enabled for this LD */
2277         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2278         raid = MR_LdRaidGet(ld, local_map_ptr);
2279         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2280                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2281                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2282                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
2283
2284                 if (scp->sc_data_direction == DMA_FROM_DEVICE)
2285                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2286                 else
2287                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2288                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2289
2290                 /* LBA */
2291                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2292                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2293                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2294                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2295                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2296                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2297                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2298                 cdb[19] = (u8)(start_blk & 0xff);
2299
2300                 /* Logical block reference tag */
2301                 io_request->CDB.EEDP32.PrimaryReferenceTag =
2302                         cpu_to_be32(ref_tag);
2303                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2304                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2305
2306                 /* Transfer length */
2307                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2308                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2309                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2310                 cdb[31] = (u8)(num_blocks & 0xff);
2311
2312                 /* set SCSI IO EEDPFlags */
2313                 if (scp->sc_data_direction == DMA_FROM_DEVICE) {
2314                         io_request->EEDPFlags = cpu_to_le16(
2315                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
2316                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2317                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2318                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2319                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2320                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2321                 } else {
2322                         io_request->EEDPFlags = cpu_to_le16(
2323                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2324                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2325                 }
2326                 io_request->Control |= cpu_to_le32((0x4 << 26));
2327                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2328         } else {
2329                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2330                 if (((cdb_len == 12) || (cdb_len == 16)) &&
2331                     (start_blk <= 0xffffffff)) {
2332                         if (cdb_len == 16) {
2333                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2334                                 flagvals = cdb[1];
2335                                 groupnum = cdb[14];
2336                                 control = cdb[15];
2337                         } else {
2338                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2339                                 flagvals = cdb[1];
2340                                 groupnum = cdb[10];
2341                                 control = cdb[11];
2342                         }
2343
2344                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2345
2346                         cdb[0] = opcode;
2347                         cdb[1] = flagvals;
2348                         cdb[6] = groupnum;
2349                         cdb[9] = control;
2350
2351                         /* Transfer length */
2352                         cdb[8] = (u8)(num_blocks & 0xff);
2353                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2354
2355                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2356                         cdb_len = 10;
2357                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2358                         /* Convert to 16 byte CDB for large LBA's */
2359                         switch (cdb_len) {
2360                         case 6:
2361                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2362                                 control = cdb[5];
2363                                 break;
2364                         case 10:
2365                                 opcode =
2366                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
2367                                 flagvals = cdb[1];
2368                                 groupnum = cdb[6];
2369                                 control = cdb[9];
2370                                 break;
2371                         case 12:
2372                                 opcode =
2373                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
2374                                 flagvals = cdb[1];
2375                                 groupnum = cdb[10];
2376                                 control = cdb[11];
2377                                 break;
2378                         }
2379
2380                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2381
2382                         cdb[0] = opcode;
2383                         cdb[1] = flagvals;
2384                         cdb[14] = groupnum;
2385                         cdb[15] = control;
2386
2387                         /* Transfer length */
2388                         cdb[13] = (u8)(num_blocks & 0xff);
2389                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2390                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2391                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2392
2393                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2394                         cdb_len = 16;
2395                 }
2396
2397                 /* Normal case, just load LBA here */
2398                 switch (cdb_len) {
2399                 case 6:
2400                 {
2401                         u8 val = cdb[1] & 0xE0;
2402                         cdb[3] = (u8)(start_blk & 0xff);
2403                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
2404                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2405                         break;
2406                 }
2407                 case 10:
2408                         cdb[5] = (u8)(start_blk & 0xff);
2409                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2410                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2411                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2412                         break;
2413                 case 12:
2414                         cdb[5]    = (u8)(start_blk & 0xff);
2415                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2416                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2417                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2418                         break;
2419                 case 16:
2420                         cdb[9]    = (u8)(start_blk & 0xff);
2421                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2422                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2423                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2424                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2425                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2426                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2427                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2428                         break;
2429                 }
2430         }
2431 }
2432
2433 /**
2434  * megasas_stream_detect -      stream detection on read and and write IOs
2435  * @instance:           Adapter soft state
2436  * @cmd:                    Command to be prepared
2437  * @io_info:            IO Request info
2438  *
2439  */
2440
2441 /** stream detection on read and and write IOs */
2442 static void megasas_stream_detect(struct megasas_instance *instance,
2443                                   struct megasas_cmd_fusion *cmd,
2444                                   struct IO_REQUEST_INFO *io_info)
2445 {
2446         struct fusion_context *fusion = instance->ctrl_context;
2447         u32 device_id = io_info->ldTgtId;
2448         struct LD_STREAM_DETECT *current_ld_sd
2449                 = fusion->stream_detect_by_ld[device_id];
2450         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2451         u32 shifted_values, unshifted_values;
2452         u32 index_value_mask, shifted_values_mask;
2453         int i;
2454         bool is_read_ahead = false;
2455         struct STREAM_DETECT *current_sd;
2456         /* find possible stream */
2457         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2458                 stream_num = (*track_stream >>
2459                         (i * BITS_PER_INDEX_STREAM)) &
2460                         STREAM_MASK;
2461                 current_sd = &current_ld_sd->stream_track[stream_num];
2462                 /* if we found a stream, update the raid
2463                  *  context and also update the mruBitMap
2464                  */
2465                 /*      boundary condition */
2466                 if ((current_sd->next_seq_lba) &&
2467                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2468                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2469                     (current_sd->is_read == io_info->isRead)) {
2470
2471                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2472                             ((!io_info->isRead) || (!is_read_ahead)))
2473                                 /*
2474                                  * Once the API availible we need to change this.
2475                                  * At this point we are not allowing any gap
2476                                  */
2477                                 continue;
2478
2479                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2480                         current_sd->next_seq_lba =
2481                         io_info->ldStartBlock + io_info->numBlocks;
2482                         /*
2483                          *      update the mruBitMap LRU
2484                          */
2485                         shifted_values_mask =
2486                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2487                         shifted_values = ((*track_stream & shifted_values_mask)
2488                                                 << BITS_PER_INDEX_STREAM);
2489                         index_value_mask =
2490                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2491                         unshifted_values =
2492                                 *track_stream & ~(shifted_values_mask |
2493                                 index_value_mask);
2494                         *track_stream =
2495                                 unshifted_values | shifted_values | stream_num;
2496                         return;
2497                 }
2498         }
2499         /*
2500          * if we did not find any stream, create a new one
2501          * from the least recently used
2502          */
2503         stream_num = (*track_stream >>
2504                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2505                 STREAM_MASK;
2506         current_sd = &current_ld_sd->stream_track[stream_num];
2507         current_sd->is_read = io_info->isRead;
2508         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2509         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2510         return;
2511 }
2512
2513 /**
2514  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2515  * affinity (cpu of the controller) and raid_flags in the raid context
2516  * based on IO type.
2517  *
2518  * @praid_context:      IO RAID context
2519  * @raid:               LD raid map
2520  * @fp_possible:        Is fast path possible?
2521  * @is_read:            Is read IO?
2522  *
2523  */
2524 static void
2525 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
2526                                   struct MR_LD_RAID *raid, bool fp_possible,
2527                                   u8 is_read, u32 scsi_buff_len)
2528 {
2529         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2530         struct RAID_CONTEXT_G35 *rctx_g35;
2531
2532         rctx_g35 = &praid_context->raid_context_g35;
2533         if (fp_possible) {
2534                 if (is_read) {
2535                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2536                             (raid->cpuAffinity.pdRead.cpu1))
2537                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2538                         else if (raid->cpuAffinity.pdRead.cpu1)
2539                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2540                 } else {
2541                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2542                             (raid->cpuAffinity.pdWrite.cpu1))
2543                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2544                         else if (raid->cpuAffinity.pdWrite.cpu1)
2545                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2546                         /* Fast path cache by pass capable R0/R1 VD */
2547                         if ((raid->level <= 1) &&
2548                             (raid->capability.fp_cache_bypass_capable)) {
2549                                 rctx_g35->routing_flags |=
2550                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2551                                 rctx_g35->raid_flags =
2552                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2553                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2554                         }
2555                 }
2556         } else {
2557                 if (is_read) {
2558                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2559                             (raid->cpuAffinity.ldRead.cpu1))
2560                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2561                         else if (raid->cpuAffinity.ldRead.cpu1)
2562                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2563                 } else {
2564                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2565                             (raid->cpuAffinity.ldWrite.cpu1))
2566                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2567                         else if (raid->cpuAffinity.ldWrite.cpu1)
2568                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2569
2570                         if (is_stream_detected(rctx_g35) &&
2571                             ((raid->level == 5) || (raid->level == 6)) &&
2572                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2573                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2574                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2575                 }
2576         }
2577
2578         rctx_g35->routing_flags |=
2579                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2580
2581         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2582          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2583          * IO Subtype is not bitmap.
2584          */
2585         if ((raid->level == 1) && (!is_read)) {
2586                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2587                         praid_context->raid_context_g35.raid_flags =
2588                                 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2589                                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2590         }
2591 }
2592
2593 /**
2594  * megasas_build_ldio_fusion -  Prepares IOs to devices
2595  * @instance:           Adapter soft state
2596  * @scp:                SCSI command
2597  * @cmd:                Command to be prepared
2598  *
2599  * Prepares the io_request and chain elements (sg_frame) for IO
2600  * The IO can be for PD (Fast Path) or LD
2601  */
2602 void
2603 megasas_build_ldio_fusion(struct megasas_instance *instance,
2604                           struct scsi_cmnd *scp,
2605                           struct megasas_cmd_fusion *cmd)
2606 {
2607         bool fp_possible;
2608         u16 ld;
2609         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2610         u32 scsi_buff_len;
2611         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2612         struct IO_REQUEST_INFO io_info;
2613         struct fusion_context *fusion;
2614         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2615         u8 *raidLUN;
2616         unsigned long spinlock_flags;
2617         struct MR_LD_RAID *raid = NULL;
2618         struct MR_PRIV_DEVICE *mrdev_priv;
2619         struct RAID_CONTEXT *rctx;
2620         struct RAID_CONTEXT_G35 *rctx_g35;
2621
2622         device_id = MEGASAS_DEV_INDEX(scp);
2623
2624         fusion = instance->ctrl_context;
2625
2626         io_request = cmd->io_request;
2627         rctx = &io_request->RaidContext.raid_context;
2628         rctx_g35 = &io_request->RaidContext.raid_context_g35;
2629
2630         rctx->virtual_disk_tgt_id = cpu_to_le16(device_id);
2631         rctx->status = 0;
2632         rctx->ex_status = 0;
2633
2634         start_lba_lo = 0;
2635         start_lba_hi = 0;
2636         fp_possible = false;
2637
2638         /*
2639          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2640          */
2641         if (scp->cmd_len == 6) {
2642                 datalength = (u32) scp->cmnd[4];
2643                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2644                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2645
2646                 start_lba_lo &= 0x1FFFFF;
2647         }
2648
2649         /*
2650          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2651          */
2652         else if (scp->cmd_len == 10) {
2653                 datalength = (u32) scp->cmnd[8] |
2654                         ((u32) scp->cmnd[7] << 8);
2655                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2656                         ((u32) scp->cmnd[3] << 16) |
2657                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2658         }
2659
2660         /*
2661          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2662          */
2663         else if (scp->cmd_len == 12) {
2664                 datalength = ((u32) scp->cmnd[6] << 24) |
2665                         ((u32) scp->cmnd[7] << 16) |
2666                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2667                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2668                         ((u32) scp->cmnd[3] << 16) |
2669                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2670         }
2671
2672         /*
2673          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2674          */
2675         else if (scp->cmd_len == 16) {
2676                 datalength = ((u32) scp->cmnd[10] << 24) |
2677                         ((u32) scp->cmnd[11] << 16) |
2678                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2679                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2680                         ((u32) scp->cmnd[7] << 16) |
2681                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2682
2683                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2684                         ((u32) scp->cmnd[3] << 16) |
2685                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2686         }
2687
2688         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2689         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2690         io_info.numBlocks = datalength;
2691         io_info.ldTgtId = device_id;
2692         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2693         scsi_buff_len = scsi_bufflen(scp);
2694         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2695
2696         if (scp->sc_data_direction == DMA_FROM_DEVICE)
2697                 io_info.isRead = 1;
2698
2699         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2700         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2701
2702         if (ld < instance->fw_supported_vd_count)
2703                 raid = MR_LdRaidGet(ld, local_map_ptr);
2704
2705         if (!raid || (!fusion->fast_path_io)) {
2706                 rctx->reg_lock_flags  = 0;
2707                 fp_possible = false;
2708         } else {
2709                 if (MR_BuildRaidContext(instance, &io_info, rctx,
2710                                         local_map_ptr, &raidLUN))
2711                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2712         }
2713
2714         cmd->request_desc->SCSIIO.MSIxIndex =
2715                 instance->reply_map[raw_smp_processor_id()];
2716
2717         if (instance->adapter_type >= VENTURA_SERIES) {
2718                 /* FP for Optimal raid level 1.
2719                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2720                  * are built by the driver as LD I/Os.
2721                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2722                  * (there is never a reason to process these as buffered writes)
2723                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2724                  * with the SLD bit asserted.
2725                  */
2726                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2727                         mrdev_priv = scp->device->hostdata;
2728
2729                         if (atomic_inc_return(&instance->fw_outstanding) >
2730                                 (instance->host->can_queue)) {
2731                                 fp_possible = false;
2732                                 atomic_dec(&instance->fw_outstanding);
2733                         } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2734                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) {
2735                                 fp_possible = false;
2736                                 atomic_dec(&instance->fw_outstanding);
2737                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2738                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2739                                                    instance->r1_ldio_hint_default);
2740                         }
2741                 }
2742
2743                 if (!fp_possible ||
2744                     (io_info.isRead && io_info.ra_capable)) {
2745                         spin_lock_irqsave(&instance->stream_lock,
2746                                           spinlock_flags);
2747                         megasas_stream_detect(instance, cmd, &io_info);
2748                         spin_unlock_irqrestore(&instance->stream_lock,
2749                                                spinlock_flags);
2750                         /* In ventura if stream detected for a read and it is
2751                          * read ahead capable make this IO as LDIO
2752                          */
2753                         if (is_stream_detected(rctx_g35))
2754                                 fp_possible = false;
2755                 }
2756
2757                 /* If raid is NULL, set CPU affinity to default CPU0 */
2758                 if (raid)
2759                         megasas_set_raidflag_cpu_affinity(&io_request->RaidContext,
2760                                 raid, fp_possible, io_info.isRead,
2761                                 scsi_buff_len);
2762                 else
2763                         rctx_g35->routing_flags |=
2764                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2765         }
2766
2767         if (fp_possible) {
2768                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2769                                    local_map_ptr, start_lba_lo);
2770                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2771                 cmd->request_desc->SCSIIO.RequestFlags =
2772                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2773                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2774                 if (instance->adapter_type == INVADER_SERIES) {
2775                         if (rctx->reg_lock_flags == REGION_TYPE_UNUSED)
2776                                 cmd->request_desc->SCSIIO.RequestFlags =
2777                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2778                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2779                         rctx->type = MPI2_TYPE_CUDA;
2780                         rctx->nseg = 0x1;
2781                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2782                         rctx->reg_lock_flags |=
2783                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2784                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2785                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2786                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2787                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2788                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2789                         io_request->IoFlags |=
2790                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2791                 }
2792                 if (fusion->load_balance_info &&
2793                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2794                         (io_info.isRead)) {
2795                         io_info.devHandle =
2796                                 get_updated_dev_handle(instance,
2797                                         &fusion->load_balance_info[device_id],
2798                                         &io_info, local_map_ptr);
2799                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2800                         cmd->pd_r1_lb = io_info.pd_after_lb;
2801                         if (instance->adapter_type >= VENTURA_SERIES)
2802                                 rctx_g35->span_arm = io_info.span_arm;
2803                         else
2804                                 rctx->span_arm = io_info.span_arm;
2805
2806                 } else
2807                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2808
2809                 if (instance->adapter_type >= VENTURA_SERIES)
2810                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2811                 else
2812                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2813
2814                 if ((raidLUN[0] == 1) &&
2815                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2816                         instance->dev_handle = !(instance->dev_handle);
2817                         io_info.devHandle =
2818                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2819                 }
2820
2821                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2822                 io_request->DevHandle = io_info.devHandle;
2823                 cmd->pd_interface = io_info.pd_interface;
2824                 /* populate the LUN field */
2825                 memcpy(io_request->LUN, raidLUN, 8);
2826         } else {
2827                 rctx->timeout_value =
2828                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2829                 cmd->request_desc->SCSIIO.RequestFlags =
2830                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2831                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2832                 if (instance->adapter_type == INVADER_SERIES) {
2833                         if (io_info.do_fp_rlbypass ||
2834                         (rctx->reg_lock_flags == REGION_TYPE_UNUSED))
2835                                 cmd->request_desc->SCSIIO.RequestFlags =
2836                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2837                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2838                         rctx->type = MPI2_TYPE_CUDA;
2839                         rctx->reg_lock_flags |=
2840                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2841                                         MR_RL_FLAGS_SEQ_NUM_ENABLE);
2842                         rctx->nseg = 0x1;
2843                 } else if (instance->adapter_type >= VENTURA_SERIES) {
2844                         rctx_g35->routing_flags |= (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2845                         rctx_g35->nseg_type |= (1 << RAID_CONTEXT_NSEG_SHIFT);
2846                         rctx_g35->nseg_type |= (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2847                 }
2848                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2849                 io_request->DevHandle = cpu_to_le16(device_id);
2850
2851         } /* Not FP */
2852 }
2853
2854 /**
2855  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2856  * @instance:           Adapter soft state
2857  * @scp:                SCSI command
2858  * @cmd:                Command to be prepared
2859  *
2860  * Prepares the io_request frame for non-rw io cmds for vd.
2861  */
2862 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2863                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2864 {
2865         u32 device_id;
2866         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2867         u16 ld;
2868         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2869         struct fusion_context *fusion = instance->ctrl_context;
2870         u8                          span, physArm;
2871         __le16                      devHandle;
2872         u32                         arRef, pd;
2873         struct MR_LD_RAID                  *raid;
2874         struct RAID_CONTEXT                *pRAID_Context;
2875         u8 fp_possible = 1;
2876
2877         io_request = cmd->io_request;
2878         device_id = MEGASAS_DEV_INDEX(scmd);
2879         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2880         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2881         /* get RAID_Context pointer */
2882         pRAID_Context = &io_request->RaidContext.raid_context;
2883         /* Check with FW team */
2884         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2885         pRAID_Context->reg_lock_row_lba    = 0;
2886         pRAID_Context->reg_lock_length    = 0;
2887
2888         if (fusion->fast_path_io && (
2889                 device_id < instance->fw_supported_vd_count)) {
2890
2891                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2892                 if (ld >= instance->fw_supported_vd_count - 1)
2893                         fp_possible = 0;
2894                 else {
2895                         raid = MR_LdRaidGet(ld, local_map_ptr);
2896                         if (!(raid->capability.fpNonRWCapable))
2897                                 fp_possible = 0;
2898                 }
2899         } else
2900                 fp_possible = 0;
2901
2902         if (!fp_possible) {
2903                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2904                 io_request->DevHandle = cpu_to_le16(device_id);
2905                 io_request->LUN[1] = scmd->device->lun;
2906                 pRAID_Context->timeout_value =
2907                         cpu_to_le16 (scmd->request->timeout / HZ);
2908                 cmd->request_desc->SCSIIO.RequestFlags =
2909                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2910                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2911         } else {
2912
2913                 /* set RAID context values */
2914                 pRAID_Context->config_seq_num = raid->seqNum;
2915                 if (instance->adapter_type < VENTURA_SERIES)
2916                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
2917                 pRAID_Context->timeout_value =
2918                         cpu_to_le16(raid->fpIoTimeoutForLd);
2919
2920                 /* get the DevHandle for the PD (since this is
2921                    fpNonRWCapable, this is a single disk RAID0) */
2922                 span = physArm = 0;
2923                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
2924                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
2925                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
2926
2927                 /* build request descriptor */
2928                 cmd->request_desc->SCSIIO.RequestFlags =
2929                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2930                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2931                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
2932
2933                 /* populate the LUN field */
2934                 memcpy(io_request->LUN, raid->LUN, 8);
2935
2936                 /* build the raidScsiIO structure */
2937                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2938                 io_request->DevHandle = devHandle;
2939         }
2940 }
2941
2942 /**
2943  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
2944  * @instance:           Adapter soft state
2945  * @scp:                SCSI command
2946  * @cmd:                Command to be prepared
2947  * @fp_possible:        parameter to detect fast path or firmware path io.
2948  *
2949  * Prepares the io_request frame for rw/non-rw io cmds for syspds
2950  */
2951 static void
2952 megasas_build_syspd_fusion(struct megasas_instance *instance,
2953         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
2954         bool fp_possible)
2955 {
2956         u32 device_id;
2957         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2958         u16 pd_index = 0;
2959         u16 os_timeout_value;
2960         u16 timeout_limit;
2961         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2962         struct RAID_CONTEXT     *pRAID_Context;
2963         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
2964         struct MR_PRIV_DEVICE *mr_device_priv_data;
2965         struct fusion_context *fusion = instance->ctrl_context;
2966         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
2967
2968         device_id = MEGASAS_DEV_INDEX(scmd);
2969         pd_index = MEGASAS_PD_INDEX(scmd);
2970         os_timeout_value = scmd->request->timeout / HZ;
2971         mr_device_priv_data = scmd->device->hostdata;
2972         cmd->pd_interface = mr_device_priv_data->interface_type;
2973
2974         io_request = cmd->io_request;
2975         /* get RAID_Context pointer */
2976         pRAID_Context = &io_request->RaidContext.raid_context;
2977         pRAID_Context->reg_lock_flags = 0;
2978         pRAID_Context->reg_lock_row_lba = 0;
2979         pRAID_Context->reg_lock_length = 0;
2980         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2981         io_request->LUN[1] = scmd->device->lun;
2982         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
2983                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
2984
2985         /* If FW supports PD sequence number */
2986         if (instance->use_seqnum_jbod_fp &&
2987                 instance->pd_list[pd_index].driveType == TYPE_DISK) {
2988                 /* TgtId must be incremented by 255 as jbod seq number is index
2989                  * below raid map
2990                  */
2991                  /* More than 256 PD/JBOD support for Ventura */
2992                 if (instance->support_morethan256jbod)
2993                         pRAID_Context->virtual_disk_tgt_id =
2994                                 pd_sync->seq[pd_index].pd_target_id;
2995                 else
2996                         pRAID_Context->virtual_disk_tgt_id =
2997                                 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
2998                 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum;
2999                 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
3000                 if (instance->adapter_type >= VENTURA_SERIES) {
3001                         io_request->RaidContext.raid_context_g35.routing_flags |=
3002                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
3003                         io_request->RaidContext.raid_context_g35.nseg_type |=
3004                                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
3005                         io_request->RaidContext.raid_context_g35.nseg_type |=
3006                                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
3007                 } else {
3008                         pRAID_Context->type = MPI2_TYPE_CUDA;
3009                         pRAID_Context->nseg = 0x1;
3010                         pRAID_Context->reg_lock_flags |=
3011                                 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
3012                 }
3013         } else if (fusion->fast_path_io) {
3014                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3015                 pRAID_Context->config_seq_num = 0;
3016                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
3017                 io_request->DevHandle =
3018                         local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
3019         } else {
3020                 /* Want to send all IO via FW path */
3021                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3022                 pRAID_Context->config_seq_num = 0;
3023                 io_request->DevHandle = cpu_to_le16(0xFFFF);
3024         }
3025
3026         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
3027
3028         cmd->request_desc->SCSIIO.MSIxIndex =
3029                 instance->reply_map[raw_smp_processor_id()];
3030
3031         if (!fp_possible) {
3032                 /* system pd firmware path */
3033                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
3034                 cmd->request_desc->SCSIIO.RequestFlags =
3035                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3036                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3037                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
3038                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
3039         } else {
3040                 if (os_timeout_value)
3041                         os_timeout_value++;
3042
3043                 /* system pd Fast Path */
3044                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
3045                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
3046                                 255 : 0xFFFF;
3047                 pRAID_Context->timeout_value =
3048                         cpu_to_le16((os_timeout_value > timeout_limit) ?
3049                         timeout_limit : os_timeout_value);
3050                 if (instance->adapter_type >= INVADER_SERIES)
3051                         io_request->IoFlags |=
3052                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
3053
3054                 cmd->request_desc->SCSIIO.RequestFlags =
3055                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3056                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3057         }
3058 }
3059
3060 /**
3061  * megasas_build_io_fusion -    Prepares IOs to devices
3062  * @instance:           Adapter soft state
3063  * @scp:                SCSI command
3064  * @cmd:                Command to be prepared
3065  *
3066  * Invokes helper functions to prepare request frames
3067  * and sets flags appropriate for IO/Non-IO cmd
3068  */
3069 int
3070 megasas_build_io_fusion(struct megasas_instance *instance,
3071                         struct scsi_cmnd *scp,
3072                         struct megasas_cmd_fusion *cmd)
3073 {
3074         int sge_count;
3075         u8  cmd_type;
3076         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3077         struct MR_PRIV_DEVICE *mr_device_priv_data;
3078         mr_device_priv_data = scp->device->hostdata;
3079
3080         /* Zero out some fields so they don't get reused */
3081         memset(io_request->LUN, 0x0, 8);
3082         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3083         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3084         io_request->EEDPFlags = 0;
3085         io_request->Control = 0;
3086         io_request->EEDPBlockSize = 0;
3087         io_request->ChainOffset = 0;
3088         io_request->RaidContext.raid_context.raid_flags = 0;
3089         io_request->RaidContext.raid_context.type = 0;
3090         io_request->RaidContext.raid_context.nseg = 0;
3091
3092         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3093         /*
3094          * Just the CDB length,rest of the Flags are zero
3095          * This will be modified for FP in build_ldio_fusion
3096          */
3097         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3098
3099         switch (cmd_type = megasas_cmd_type(scp)) {
3100         case READ_WRITE_LDIO:
3101                 megasas_build_ldio_fusion(instance, scp, cmd);
3102                 break;
3103         case NON_READ_WRITE_LDIO:
3104                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3105                 break;
3106         case READ_WRITE_SYSPDIO:
3107                 megasas_build_syspd_fusion(instance, scp, cmd, true);
3108                 break;
3109         case NON_READ_WRITE_SYSPDIO:
3110                 if (instance->secure_jbod_support ||
3111                     mr_device_priv_data->is_tm_capable)
3112                         megasas_build_syspd_fusion(instance, scp, cmd, false);
3113                 else
3114                         megasas_build_syspd_fusion(instance, scp, cmd, true);
3115                 break;
3116         default:
3117                 break;
3118         }
3119
3120         /*
3121          * Construct SGL
3122          */
3123
3124         sge_count = megasas_make_sgl(instance, scp, cmd);
3125
3126         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3127                 dev_err(&instance->pdev->dev,
3128                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
3129                         __func__, __LINE__, sge_count, instance->max_num_sge);
3130                 return 1;
3131         }
3132
3133         if (instance->adapter_type >= VENTURA_SERIES) {
3134                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3135                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3136                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3137         } else {
3138                 /* numSGE store lower 8 bit of sge_count.
3139                  * numSGEExt store higher 8 bit of sge_count
3140                  */
3141                 io_request->RaidContext.raid_context.num_sge = sge_count;
3142                 io_request->RaidContext.raid_context.num_sge_ext =
3143                         (u8)(sge_count >> 8);
3144         }
3145
3146         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3147
3148         if (scp->sc_data_direction == DMA_TO_DEVICE)
3149                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3150         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
3151                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3152
3153         io_request->SGLOffset0 =
3154                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3155
3156         io_request->SenseBufferLowAddress =
3157                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3158         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3159
3160         cmd->scmd = scp;
3161         scp->SCp.ptr = (char *)cmd;
3162
3163         return 0;
3164 }
3165
3166 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3167 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3168 {
3169         u8 *p;
3170         struct fusion_context *fusion;
3171
3172         fusion = instance->ctrl_context;
3173         p = fusion->req_frames_desc +
3174                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3175
3176         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3177 }
3178
3179
3180 /* megasas_prepate_secondRaid1_IO
3181  *  It prepares the raid 1 second IO
3182  */
3183 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3184                             struct megasas_cmd_fusion *cmd,
3185                             struct megasas_cmd_fusion *r1_cmd)
3186 {
3187         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3188         struct fusion_context *fusion;
3189         fusion = instance->ctrl_context;
3190         req_desc = cmd->request_desc;
3191         /* copy the io request frame as well as 8 SGEs data for r1 command*/
3192         memcpy(r1_cmd->io_request, cmd->io_request,
3193                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3194         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3195                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3196         /*sense buffer is different for r1 command*/
3197         r1_cmd->io_request->SenseBufferLowAddress =
3198                         cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3199         r1_cmd->scmd = cmd->scmd;
3200         req_desc2 = megasas_get_request_descriptor(instance,
3201                                                    (r1_cmd->index - 1));
3202         req_desc2->Words = 0;
3203         r1_cmd->request_desc = req_desc2;
3204         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3205         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3206         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3207         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3208         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3209         cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3210                         cpu_to_le16(r1_cmd->index);
3211         r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3212                         cpu_to_le16(cmd->index);
3213         /*MSIxIndex of both commands request descriptors should be same*/
3214         r1_cmd->request_desc->SCSIIO.MSIxIndex =
3215                         cmd->request_desc->SCSIIO.MSIxIndex;
3216         /*span arm is different for r1 cmd*/
3217         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3218                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3219 }
3220
3221 /**
3222  * megasas_build_and_issue_cmd_fusion -Main routine for building and
3223  *                                     issuing non IOCTL cmd
3224  * @instance:                   Adapter soft state
3225  * @scmd:                       pointer to scsi cmd from OS
3226  */
3227 static u32
3228 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3229                                    struct scsi_cmnd *scmd)
3230 {
3231         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3232         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3233         u32 index;
3234
3235         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3236                 instance->ldio_threshold &&
3237                 (atomic_inc_return(&instance->ldio_outstanding) >
3238                 instance->ldio_threshold)) {
3239                 atomic_dec(&instance->ldio_outstanding);
3240                 return SCSI_MLQUEUE_DEVICE_BUSY;
3241         }
3242
3243         if (atomic_inc_return(&instance->fw_outstanding) >
3244                         instance->host->can_queue) {
3245                 atomic_dec(&instance->fw_outstanding);
3246                 return SCSI_MLQUEUE_HOST_BUSY;
3247         }
3248
3249         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3250
3251         if (!cmd) {
3252                 atomic_dec(&instance->fw_outstanding);
3253                 return SCSI_MLQUEUE_HOST_BUSY;
3254         }
3255
3256         index = cmd->index;
3257
3258         req_desc = megasas_get_request_descriptor(instance, index-1);
3259
3260         req_desc->Words = 0;
3261         cmd->request_desc = req_desc;
3262
3263         if (megasas_build_io_fusion(instance, scmd, cmd)) {
3264                 megasas_return_cmd_fusion(instance, cmd);
3265                 dev_err(&instance->pdev->dev, "Error building command\n");
3266                 cmd->request_desc = NULL;
3267                 atomic_dec(&instance->fw_outstanding);
3268                 return SCSI_MLQUEUE_HOST_BUSY;
3269         }
3270
3271         req_desc = cmd->request_desc;
3272         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3273
3274         if (cmd->io_request->ChainOffset != 0 &&
3275             cmd->io_request->ChainOffset != 0xF)
3276                 dev_err(&instance->pdev->dev, "The chain offset value is not "
3277                        "correct : %x\n", cmd->io_request->ChainOffset);
3278         /*
3279          *      if it is raid 1/10 fp write capable.
3280          *      try to get second command from pool and construct it.
3281          *      From FW, it has confirmed that lba values of two PDs
3282          *      corresponds to single R1/10 LD are always same
3283          *
3284          */
3285         /*      driver side count always should be less than max_fw_cmds
3286          *      to get new command
3287          */
3288         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3289                 r1_cmd = megasas_get_cmd_fusion(instance,
3290                                 (scmd->request->tag + instance->max_fw_cmds));
3291                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3292         }
3293
3294
3295         /*
3296          * Issue the command to the FW
3297          */
3298
3299         megasas_fire_cmd_fusion(instance, req_desc);
3300
3301         if (r1_cmd)
3302                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3303
3304
3305         return 0;
3306 }
3307
3308 /**
3309  * megasas_complete_r1_command -
3310  * completes R1 FP write commands which has valid peer smid
3311  * @instance:                   Adapter soft state
3312  * @cmd_fusion:                 MPT command frame
3313  *
3314  */
3315 static inline void
3316 megasas_complete_r1_command(struct megasas_instance *instance,
3317                             struct megasas_cmd_fusion *cmd)
3318 {
3319         u8 *sense, status, ex_status;
3320         u32 data_length;
3321         u16 peer_smid;
3322         struct fusion_context *fusion;
3323         struct megasas_cmd_fusion *r1_cmd = NULL;
3324         struct scsi_cmnd *scmd_local = NULL;
3325         struct RAID_CONTEXT_G35 *rctx_g35;
3326
3327         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3328         fusion = instance->ctrl_context;
3329         peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid);
3330
3331         r1_cmd = fusion->cmd_list[peer_smid - 1];
3332         scmd_local = cmd->scmd;
3333         status = rctx_g35->status;
3334         ex_status = rctx_g35->ex_status;
3335         data_length = cmd->io_request->DataLength;
3336         sense = cmd->sense;
3337
3338         cmd->cmd_completed = true;
3339
3340         /* Check if peer command is completed or not*/
3341         if (r1_cmd->cmd_completed) {
3342                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3343                 if (rctx_g35->status != MFI_STAT_OK) {
3344                         status = rctx_g35->status;
3345                         ex_status = rctx_g35->ex_status;
3346                         data_length = r1_cmd->io_request->DataLength;
3347                         sense = r1_cmd->sense;
3348                 }
3349
3350                 megasas_return_cmd_fusion(instance, r1_cmd);
3351                 map_cmd_status(fusion, scmd_local, status, ex_status,
3352                                le32_to_cpu(data_length), sense);
3353                 if (instance->ldio_threshold &&
3354                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3355                         atomic_dec(&instance->ldio_outstanding);
3356                 scmd_local->SCp.ptr = NULL;
3357                 megasas_return_cmd_fusion(instance, cmd);
3358                 scsi_dma_unmap(scmd_local);
3359                 scmd_local->scsi_done(scmd_local);
3360         }
3361 }
3362
3363 /**
3364  * complete_cmd_fusion -        Completes command
3365  * @instance:                   Adapter soft state
3366  * Completes all commands that is in reply descriptor queue
3367  */
3368 int
3369 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
3370 {
3371         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3372         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3373         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3374         struct fusion_context *fusion;
3375         struct megasas_cmd *cmd_mfi;
3376         struct megasas_cmd_fusion *cmd_fusion;
3377         u16 smid, num_completed;
3378         u8 reply_descript_type, *sense, status, extStatus;
3379         u32 device_id, data_length;
3380         union desc_value d_val;
3381         struct LD_LOAD_BALANCE_INFO *lbinfo;
3382         int threshold_reply_count = 0;
3383         struct scsi_cmnd *scmd_local = NULL;
3384         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3385         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3386
3387         fusion = instance->ctrl_context;
3388
3389         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3390                 return IRQ_HANDLED;
3391
3392         desc = fusion->reply_frames_desc[MSIxIndex] +
3393                                 fusion->last_reply_idx[MSIxIndex];
3394
3395         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3396
3397         d_val.word = desc->Words;
3398
3399         reply_descript_type = reply_desc->ReplyFlags &
3400                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3401
3402         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3403                 return IRQ_NONE;
3404
3405         num_completed = 0;
3406
3407         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3408                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3409
3410                 smid = le16_to_cpu(reply_desc->SMID);
3411                 cmd_fusion = fusion->cmd_list[smid - 1];
3412                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3413                                                 cmd_fusion->io_request;
3414
3415                 scmd_local = cmd_fusion->scmd;
3416                 status = scsi_io_req->RaidContext.raid_context.status;
3417                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3418                 sense = cmd_fusion->sense;
3419                 data_length = scsi_io_req->DataLength;
3420
3421                 switch (scsi_io_req->Function) {
3422                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3423                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3424                                                 cmd_fusion->io_request;
3425                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3426                                                 &mr_tm_req->TmRequest;
3427                         dev_dbg(&instance->pdev->dev, "TM completion:"
3428                                 "type: 0x%x TaskMID: 0x%x\n",
3429                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3430                         complete(&cmd_fusion->done);
3431                         break;
3432                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3433                         /* Update load balancing info */
3434                         if (fusion->load_balance_info &&
3435                             (cmd_fusion->scmd->SCp.Status &
3436                             MEGASAS_LOAD_BALANCE_FLAG)) {
3437                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3438                                 lbinfo = &fusion->load_balance_info[device_id];
3439                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3440                                 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3441                         }
3442                         /* Fall through - and complete IO */
3443                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3444                         atomic_dec(&instance->fw_outstanding);
3445                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3446                                 map_cmd_status(fusion, scmd_local, status,
3447                                                extStatus, le32_to_cpu(data_length),
3448                                                sense);
3449                                 if (instance->ldio_threshold &&
3450                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3451                                         atomic_dec(&instance->ldio_outstanding);
3452                                 scmd_local->SCp.ptr = NULL;
3453                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3454                                 scsi_dma_unmap(scmd_local);
3455                                 scmd_local->scsi_done(scmd_local);
3456                         } else  /* Optimal VD - R1 FP command completion. */
3457                                 megasas_complete_r1_command(instance, cmd_fusion);
3458                         break;
3459                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3460                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3461                         /* Poll mode. Dummy free.
3462                          * In case of Interrupt mode, caller has reverse check.
3463                          */
3464                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3465                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3466                                 megasas_return_cmd(instance, cmd_mfi);
3467                         } else
3468                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3469                         break;
3470                 }
3471
3472                 fusion->last_reply_idx[MSIxIndex]++;
3473                 if (fusion->last_reply_idx[MSIxIndex] >=
3474                     fusion->reply_q_depth)
3475                         fusion->last_reply_idx[MSIxIndex] = 0;
3476
3477                 desc->Words = cpu_to_le64(ULLONG_MAX);
3478                 num_completed++;
3479                 threshold_reply_count++;
3480
3481                 /* Get the next reply descriptor */
3482                 if (!fusion->last_reply_idx[MSIxIndex])
3483                         desc = fusion->reply_frames_desc[MSIxIndex];
3484                 else
3485                         desc++;
3486
3487                 reply_desc =
3488                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3489
3490                 d_val.word = desc->Words;
3491
3492                 reply_descript_type = reply_desc->ReplyFlags &
3493                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3494
3495                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3496                         break;
3497                 /*
3498                  * Write to reply post host index register after completing threshold
3499                  * number of reply counts and still there are more replies in reply queue
3500                  * pending to be completed
3501                  */
3502                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
3503                         if (instance->msix_combined)
3504                                 writel(((MSIxIndex & 0x7) << 24) |
3505                                         fusion->last_reply_idx[MSIxIndex],
3506                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3507                         else
3508                                 writel((MSIxIndex << 24) |
3509                                         fusion->last_reply_idx[MSIxIndex],
3510                                         instance->reply_post_host_index_addr[0]);
3511                         threshold_reply_count = 0;
3512                 }
3513         }
3514
3515         if (!num_completed)
3516                 return IRQ_NONE;
3517
3518         wmb();
3519         if (instance->msix_combined)
3520                 writel(((MSIxIndex & 0x7) << 24) |
3521                         fusion->last_reply_idx[MSIxIndex],
3522                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3523         else
3524                 writel((MSIxIndex << 24) |
3525                         fusion->last_reply_idx[MSIxIndex],
3526                         instance->reply_post_host_index_addr[0]);
3527         megasas_check_and_restore_queue_depth(instance);
3528         return IRQ_HANDLED;
3529 }
3530
3531 /**
3532  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3533  * @instance:                   Adapter soft state
3534  */
3535 void megasas_sync_irqs(unsigned long instance_addr)
3536 {
3537         u32 count, i;
3538         struct megasas_instance *instance =
3539                 (struct megasas_instance *)instance_addr;
3540
3541         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3542
3543         for (i = 0; i < count; i++)
3544                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3545 }
3546
3547 /**
3548  * megasas_complete_cmd_dpc_fusion -    Completes command
3549  * @instance:                   Adapter soft state
3550  *
3551  * Tasklet to complete cmds
3552  */
3553 void
3554 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3555 {
3556         struct megasas_instance *instance =
3557                 (struct megasas_instance *)instance_addr;
3558         u32 count, MSIxIndex;
3559
3560         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3561
3562         /* If we have already declared adapter dead, donot complete cmds */
3563         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3564                 return;
3565
3566         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3567                 complete_cmd_fusion(instance, MSIxIndex);
3568 }
3569
3570 /**
3571  * megasas_isr_fusion - isr entry point
3572  */
3573 irqreturn_t megasas_isr_fusion(int irq, void *devp)
3574 {
3575         struct megasas_irq_context *irq_context = devp;
3576         struct megasas_instance *instance = irq_context->instance;
3577         u32 mfiStatus;
3578
3579         if (instance->mask_interrupts)
3580                 return IRQ_NONE;
3581
3582         if (!instance->msix_vectors) {
3583                 mfiStatus = instance->instancet->clear_intr(instance);
3584                 if (!mfiStatus)
3585                         return IRQ_NONE;
3586         }
3587
3588         /* If we are resetting, bail */
3589         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3590                 instance->instancet->clear_intr(instance);
3591                 return IRQ_HANDLED;
3592         }
3593
3594         return complete_cmd_fusion(instance, irq_context->MSIxIndex);
3595 }
3596
3597 /**
3598  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3599  * @instance:                   Adapter soft state
3600  * mfi_cmd:                     megasas_cmd pointer
3601  *
3602  */
3603 void
3604 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3605                         struct megasas_cmd *mfi_cmd)
3606 {
3607         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3608         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3609         struct megasas_cmd_fusion *cmd;
3610         struct fusion_context *fusion;
3611         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3612
3613         fusion = instance->ctrl_context;
3614
3615         cmd = megasas_get_cmd_fusion(instance,
3616                         instance->max_scsi_cmds + mfi_cmd->index);
3617
3618         /*  Save the smid. To be used for returning the cmd */
3619         mfi_cmd->context.smid = cmd->index;
3620
3621         /*
3622          * For cmds where the flag is set, store the flag and check
3623          * on completion. For cmds with this flag, don't call
3624          * megasas_complete_cmd
3625          */
3626
3627         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3628                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3629
3630         io_req = cmd->io_request;
3631
3632         if (instance->adapter_type >= INVADER_SERIES) {
3633                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3634                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3635                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3636                 sgl_ptr_end->Flags = 0;
3637         }
3638
3639         mpi25_ieee_chain =
3640           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3641
3642         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3643         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3644                                        SGL) / 4;
3645         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3646
3647         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3648
3649         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3650                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3651
3652         mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3653 }
3654
3655 /**
3656  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3657  * @instance:                   Adapter soft state
3658  * @cmd:                        mfi cmd to build
3659  *
3660  */
3661 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3662 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3663 {
3664         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3665         u16 index;
3666
3667         build_mpt_mfi_pass_thru(instance, cmd);
3668         index = cmd->context.smid;
3669
3670         req_desc = megasas_get_request_descriptor(instance, index - 1);
3671
3672         req_desc->Words = 0;
3673         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3674                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3675
3676         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3677
3678         return req_desc;
3679 }
3680
3681 /**
3682  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3683  * @instance:                   Adapter soft state
3684  * @cmd:                        mfi cmd pointer
3685  *
3686  */
3687 void
3688 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3689                           struct megasas_cmd *cmd)
3690 {
3691         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3692
3693         req_desc = build_mpt_cmd(instance, cmd);
3694
3695         megasas_fire_cmd_fusion(instance, req_desc);
3696         return;
3697 }
3698
3699 /**
3700  * megasas_release_fusion -     Reverses the FW initialization
3701  * @instance:                   Adapter soft state
3702  */
3703 void
3704 megasas_release_fusion(struct megasas_instance *instance)
3705 {
3706         megasas_free_ioc_init_cmd(instance);
3707         megasas_free_cmds(instance);
3708         megasas_free_cmds_fusion(instance);
3709
3710         iounmap(instance->reg_set);
3711
3712         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3713 }
3714
3715 /**
3716  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3717  * @regs:                       MFI register set
3718  */
3719 static u32
3720 megasas_read_fw_status_reg_fusion(struct megasas_instance *instance)
3721 {
3722         return megasas_readl(instance, &instance->reg_set->outbound_scratch_pad_0);
3723 }
3724
3725 /**
3726  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
3727  * @instance:                           Controller's soft instance
3728  * return:                              Number of allocated host crash buffers
3729  */
3730 static void
3731 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3732 {
3733         unsigned int i;
3734
3735         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3736                 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3737                 if (!instance->crash_buf[i]) {
3738                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3739                                 "memory allocation failed at index %d\n", i);
3740                         break;
3741                 }
3742         }
3743         instance->drv_buf_alloc = i;
3744 }
3745
3746 /**
3747  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
3748  * @instance:                           Controller's soft instance
3749  */
3750 void
3751 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3752 {
3753         unsigned int i;
3754         for (i = 0; i < instance->drv_buf_alloc; i++) {
3755                 if (instance->crash_buf[i])
3756                         vfree(instance->crash_buf[i]);
3757         }
3758         instance->drv_buf_index = 0;
3759         instance->drv_buf_alloc = 0;
3760         instance->fw_crash_state = UNAVAILABLE;
3761         instance->fw_crash_buffer_size = 0;
3762 }
3763
3764 /**
3765  * megasas_adp_reset_fusion -   For controller reset
3766  * @regs:                               MFI register set
3767  */
3768 static int
3769 megasas_adp_reset_fusion(struct megasas_instance *instance,
3770                          struct megasas_register_set __iomem *regs)
3771 {
3772         u32 host_diag, abs_state, retry;
3773
3774         /* Now try to reset the chip */
3775         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3776         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3777         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3778         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3779         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3780         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3781         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3782
3783         /* Check that the diag write enable (DRWE) bit is on */
3784         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
3785         retry = 0;
3786         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
3787                 msleep(100);
3788                 host_diag = megasas_readl(instance,
3789                                           &instance->reg_set->fusion_host_diag);
3790                 if (retry++ == 100) {
3791                         dev_warn(&instance->pdev->dev,
3792                                 "Host diag unlock failed from %s %d\n",
3793                                 __func__, __LINE__);
3794                         break;
3795                 }
3796         }
3797         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
3798                 return -1;
3799
3800         /* Send chip reset command */
3801         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
3802                 &instance->reg_set->fusion_host_diag);
3803         msleep(3000);
3804
3805         /* Make sure reset adapter bit is cleared */
3806         host_diag = megasas_readl(instance, &instance->reg_set->fusion_host_diag);
3807         retry = 0;
3808         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
3809                 msleep(100);
3810                 host_diag = megasas_readl(instance,
3811                                           &instance->reg_set->fusion_host_diag);
3812                 if (retry++ == 1000) {
3813                         dev_warn(&instance->pdev->dev,
3814                                 "Diag reset adapter never cleared %s %d\n",
3815                                 __func__, __LINE__);
3816                         break;
3817                 }
3818         }
3819         if (host_diag & HOST_DIAG_RESET_ADAPTER)
3820                 return -1;
3821
3822         abs_state = instance->instancet->read_fw_status_reg(instance)
3823                         & MFI_STATE_MASK;
3824         retry = 0;
3825
3826         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
3827                 msleep(100);
3828                 abs_state = instance->instancet->
3829                         read_fw_status_reg(instance) & MFI_STATE_MASK;
3830         }
3831         if (abs_state <= MFI_STATE_FW_INIT) {
3832                 dev_warn(&instance->pdev->dev,
3833                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
3834                         abs_state, __func__, __LINE__);
3835                 return -1;
3836         }
3837
3838         return 0;
3839 }
3840
3841 /**
3842  * megasas_check_reset_fusion - For controller reset check
3843  * @regs:                               MFI register set
3844  */
3845 static int
3846 megasas_check_reset_fusion(struct megasas_instance *instance,
3847                            struct megasas_register_set __iomem *regs)
3848 {
3849         return 0;
3850 }
3851
3852 /**
3853  * megasas_trigger_snap_dump -  Trigger snap dump in FW
3854  * @instance:                   Soft instance of adapter
3855  */
3856 static inline void megasas_trigger_snap_dump(struct megasas_instance *instance)
3857 {
3858         int j;
3859         u32 fw_state;
3860
3861         if (!instance->disableOnlineCtrlReset) {
3862                 dev_info(&instance->pdev->dev, "Trigger snap dump\n");
3863                 writel(MFI_ADP_TRIGGER_SNAP_DUMP,
3864                        &instance->reg_set->doorbell);
3865                 readl(&instance->reg_set->doorbell);
3866         }
3867
3868         for (j = 0; j < instance->snapdump_wait_time; j++) {
3869                 fw_state = instance->instancet->read_fw_status_reg(instance) &
3870                                 MFI_STATE_MASK;
3871                 if (fw_state == MFI_STATE_FAULT) {
3872                         dev_err(&instance->pdev->dev,
3873                                 "Found FW in FAULT state, after snap dump trigger\n");
3874                         return;
3875                 }
3876                 msleep(1000);
3877         }
3878 }
3879
3880 /* This function waits for outstanding commands on fusion to complete */
3881 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
3882                                         int reason, int *convert)
3883 {
3884         int i, outstanding, retval = 0, hb_seconds_missed = 0;
3885         u32 fw_state;
3886         u32 waittime_for_io_completion;
3887
3888         waittime_for_io_completion =
3889                 min_t(u32, resetwaittime,
3890                         (resetwaittime - instance->snapdump_wait_time));
3891
3892         if (reason == MFI_IO_TIMEOUT_OCR) {
3893                 dev_info(&instance->pdev->dev,
3894                         "MFI command is timed out\n");
3895                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3896                 if (instance->snapdump_wait_time)
3897                         megasas_trigger_snap_dump(instance);
3898                 retval = 1;
3899                 goto out;
3900         }
3901
3902         for (i = 0; i < waittime_for_io_completion; i++) {
3903                 /* Check if firmware is in fault state */
3904                 fw_state = instance->instancet->read_fw_status_reg(instance) &
3905                                 MFI_STATE_MASK;
3906                 if (fw_state == MFI_STATE_FAULT) {
3907                         dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
3908                                " will reset adapter scsi%d.\n",
3909                                 instance->host->host_no);
3910                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3911                         if (instance->requestorId && reason) {
3912                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
3913                                 " state while polling during"
3914                                 " I/O timeout handling for %d\n",
3915                                 instance->host->host_no);
3916                                 *convert = 1;
3917                         }
3918
3919                         retval = 1;
3920                         goto out;
3921                 }
3922
3923
3924                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
3925                 if (instance->requestorId && !reason) {
3926                         retval = 1;
3927                         goto out;
3928                 }
3929
3930                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
3931                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
3932                         if (instance->hb_host_mem->HB.fwCounter !=
3933                             instance->hb_host_mem->HB.driverCounter) {
3934                                 instance->hb_host_mem->HB.driverCounter =
3935                                         instance->hb_host_mem->HB.fwCounter;
3936                                 hb_seconds_missed = 0;
3937                         } else {
3938                                 hb_seconds_missed++;
3939                                 if (hb_seconds_missed ==
3940                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
3941                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
3942                                                " Heartbeat never completed "
3943                                                " while polling during I/O "
3944                                                " timeout handling for "
3945                                                "scsi%d.\n",
3946                                                instance->host->host_no);
3947                                                *convert = 1;
3948                                                retval = 1;
3949                                                goto out;
3950                                 }
3951                         }
3952                 }
3953
3954                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3955                 outstanding = atomic_read(&instance->fw_outstanding);
3956                 if (!outstanding)
3957                         goto out;
3958
3959                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
3960                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
3961                                "commands to complete for scsi%d\n", i,
3962                                outstanding, instance->host->host_no);
3963                 }
3964                 msleep(1000);
3965         }
3966
3967         if (instance->snapdump_wait_time) {
3968                 megasas_trigger_snap_dump(instance);
3969                 retval = 1;
3970                 goto out;
3971         }
3972
3973         if (atomic_read(&instance->fw_outstanding)) {
3974                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
3975                        "will reset adapter scsi%d.\n",
3976                        instance->host->host_no);
3977                 *convert = 1;
3978                 retval = 1;
3979         }
3980
3981 out:
3982         return retval;
3983 }
3984
3985 void  megasas_reset_reply_desc(struct megasas_instance *instance)
3986 {
3987         int i, j, count;
3988         struct fusion_context *fusion;
3989         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
3990
3991         fusion = instance->ctrl_context;
3992         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3993         for (i = 0 ; i < count ; i++) {
3994                 fusion->last_reply_idx[i] = 0;
3995                 reply_desc = fusion->reply_frames_desc[i];
3996                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
3997                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
3998         }
3999 }
4000
4001 /*
4002  * megasas_refire_mgmt_cmd :    Re-fire management commands
4003  * @instance:                           Controller's soft instance
4004 */
4005 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
4006 {
4007         int j;
4008         struct megasas_cmd_fusion *cmd_fusion;
4009         struct fusion_context *fusion;
4010         struct megasas_cmd *cmd_mfi;
4011         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4012         u16 smid;
4013         bool refire_cmd = 0;
4014         u8 result;
4015         u32 opcode = 0;
4016
4017         fusion = instance->ctrl_context;
4018
4019         /* Re-fire management commands.
4020          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
4021          */
4022         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
4023                 cmd_fusion = fusion->cmd_list[j];
4024                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
4025                 smid = le16_to_cpu(cmd_mfi->context.smid);
4026                 result = REFIRE_CMD;
4027
4028                 if (!smid)
4029                         continue;
4030
4031                 req_desc = megasas_get_request_descriptor(instance, smid - 1);
4032
4033                 switch (cmd_mfi->frame->hdr.cmd) {
4034                 case MFI_CMD_DCMD:
4035                         opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
4036                          /* Do not refire shutdown command */
4037                         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
4038                                 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
4039                                 result = COMPLETE_CMD;
4040                                 break;
4041                         }
4042
4043                         refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
4044                                       (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
4045                                       !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
4046
4047                         if (!refire_cmd)
4048                                 result = RETURN_CMD;
4049
4050                         break;
4051                 case MFI_CMD_NVME:
4052                         if (!instance->support_nvme_passthru) {
4053                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
4054                                 result = COMPLETE_CMD;
4055                         }
4056
4057                         break;
4058                 default:
4059                         break;
4060                 }
4061
4062                 switch (result) {
4063                 case REFIRE_CMD:
4064                         megasas_fire_cmd_fusion(instance, req_desc);
4065                         break;
4066                 case RETURN_CMD:
4067                         megasas_return_cmd(instance, cmd_mfi);
4068                         break;
4069                 case COMPLETE_CMD:
4070                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4071                         break;
4072                 }
4073         }
4074 }
4075
4076 /*
4077  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4078  * @instance: per adapter struct
4079  * @channel: the channel assigned by the OS
4080  * @id: the id assigned by the OS
4081  *
4082  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4083  */
4084
4085 static int megasas_track_scsiio(struct megasas_instance *instance,
4086                 int id, int channel)
4087 {
4088         int i, found = 0;
4089         struct megasas_cmd_fusion *cmd_fusion;
4090         struct fusion_context *fusion;
4091         fusion = instance->ctrl_context;
4092
4093         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4094                 cmd_fusion = fusion->cmd_list[i];
4095                 if (cmd_fusion->scmd &&
4096                         (cmd_fusion->scmd->device->id == id &&
4097                         cmd_fusion->scmd->device->channel == channel)) {
4098                         dev_info(&instance->pdev->dev,
4099                                 "SCSI commands pending to target"
4100                                 "channel %d id %d \tSMID: 0x%x\n",
4101                                 channel, id, cmd_fusion->index);
4102                         scsi_print_command(cmd_fusion->scmd);
4103                         found = 1;
4104                         break;
4105                 }
4106         }
4107
4108         return found ? FAILED : SUCCESS;
4109 }
4110
4111 /**
4112  * megasas_tm_response_code - translation of device response code
4113  * @ioc: per adapter object
4114  * @mpi_reply: MPI reply returned by firmware
4115  *
4116  * Return nothing.
4117  */
4118 static void
4119 megasas_tm_response_code(struct megasas_instance *instance,
4120                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4121 {
4122         char *desc;
4123
4124         switch (mpi_reply->ResponseCode) {
4125         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4126                 desc = "task management request completed";
4127                 break;
4128         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4129                 desc = "invalid frame";
4130                 break;
4131         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4132                 desc = "task management request not supported";
4133                 break;
4134         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4135                 desc = "task management request failed";
4136                 break;
4137         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4138                 desc = "task management request succeeded";
4139                 break;
4140         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4141                 desc = "invalid lun";
4142                 break;
4143         case 0xA:
4144                 desc = "overlapped tag attempted";
4145                 break;
4146         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4147                 desc = "task queued, however not sent to target";
4148                 break;
4149         default:
4150                 desc = "unknown";
4151                 break;
4152         }
4153         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4154                 mpi_reply->ResponseCode, desc);
4155         dev_dbg(&instance->pdev->dev,
4156                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4157                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4158                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4159                 mpi_reply->Function, mpi_reply->TaskType,
4160                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4161 }
4162
4163 /**
4164  * megasas_issue_tm - main routine for sending tm requests
4165  * @instance: per adapter struct
4166  * @device_handle: device handle
4167  * @channel: the channel assigned by the OS
4168  * @id: the id assigned by the OS
4169  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4170  * @smid_task: smid assigned to the task
4171  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4172  * Context: user
4173  *
4174  * MegaRaid use MPT interface for Task Magement request.
4175  * A generic API for sending task management requests to firmware.
4176  *
4177  * Return SUCCESS or FAILED.
4178  */
4179 static int
4180 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4181         uint channel, uint id, u16 smid_task, u8 type,
4182         struct MR_PRIV_DEVICE *mr_device_priv_data)
4183 {
4184         struct MR_TASK_MANAGE_REQUEST *mr_request;
4185         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4186         unsigned long timeleft;
4187         struct megasas_cmd_fusion *cmd_fusion;
4188         struct megasas_cmd *cmd_mfi;
4189         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4190         struct fusion_context *fusion = NULL;
4191         struct megasas_cmd_fusion *scsi_lookup;
4192         int rc;
4193         int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4194         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4195
4196         fusion = instance->ctrl_context;
4197
4198         cmd_mfi = megasas_get_cmd(instance);
4199
4200         if (!cmd_mfi) {
4201                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4202                         __func__, __LINE__);
4203                 return -ENOMEM;
4204         }
4205
4206         cmd_fusion = megasas_get_cmd_fusion(instance,
4207                         instance->max_scsi_cmds + cmd_mfi->index);
4208
4209         /*  Save the smid. To be used for returning the cmd */
4210         cmd_mfi->context.smid = cmd_fusion->index;
4211
4212         req_desc = megasas_get_request_descriptor(instance,
4213                         (cmd_fusion->index - 1));
4214
4215         cmd_fusion->request_desc = req_desc;
4216         req_desc->Words = 0;
4217
4218         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4219         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4220         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4221         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4222         mpi_request->DevHandle = cpu_to_le16(device_handle);
4223         mpi_request->TaskType = type;
4224         mpi_request->TaskMID = cpu_to_le16(smid_task);
4225         mpi_request->LUN[1] = 0;
4226
4227
4228         req_desc = cmd_fusion->request_desc;
4229         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4230         req_desc->HighPriority.RequestFlags =
4231                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4232                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4233         req_desc->HighPriority.MSIxIndex =  0;
4234         req_desc->HighPriority.LMID = 0;
4235         req_desc->HighPriority.Reserved1 = 0;
4236
4237         if (channel < MEGASAS_MAX_PD_CHANNELS)
4238                 mr_request->tmReqFlags.isTMForPD = 1;
4239         else
4240                 mr_request->tmReqFlags.isTMForLD = 1;
4241
4242         init_completion(&cmd_fusion->done);
4243         megasas_fire_cmd_fusion(instance, req_desc);
4244
4245         switch (type) {
4246         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4247                 timeout = mr_device_priv_data->task_abort_tmo;
4248                 break;
4249         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4250                 timeout = mr_device_priv_data->target_reset_tmo;
4251                 break;
4252         }
4253
4254         timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4255
4256         if (!timeleft) {
4257                 dev_err(&instance->pdev->dev,
4258                         "task mgmt type 0x%x timed out\n", type);
4259                 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
4260                 mutex_unlock(&instance->reset_mutex);
4261                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4262                 mutex_lock(&instance->reset_mutex);
4263                 return rc;
4264         }
4265
4266         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4267         megasas_tm_response_code(instance, mpi_reply);
4268
4269         megasas_return_cmd(instance, cmd_mfi);
4270         rc = SUCCESS;
4271         switch (type) {
4272         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4273                 scsi_lookup = fusion->cmd_list[smid_task - 1];
4274
4275                 if (scsi_lookup->scmd == NULL)
4276                         break;
4277                 else {
4278                         instance->instancet->disable_intr(instance);
4279                         megasas_sync_irqs((unsigned long)instance);
4280                         instance->instancet->enable_intr(instance);
4281                         if (scsi_lookup->scmd == NULL)
4282                                 break;
4283                 }
4284                 rc = FAILED;
4285                 break;
4286
4287         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4288                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4289                         break;
4290                 instance->instancet->disable_intr(instance);
4291                 megasas_sync_irqs((unsigned long)instance);
4292                 rc = megasas_track_scsiio(instance, id, channel);
4293                 instance->instancet->enable_intr(instance);
4294
4295                 break;
4296         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4297         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4298                 break;
4299         default:
4300                 rc = FAILED;
4301                 break;
4302         }
4303
4304         return rc;
4305
4306 }
4307
4308 /*
4309  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4310  * @instance: per adapter struct
4311  *
4312  * Return Non Zero index, if SMID found in outstanding commands
4313  */
4314 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4315 {
4316         int i, ret = 0;
4317         struct megasas_instance *instance;
4318         struct megasas_cmd_fusion *cmd_fusion;
4319         struct fusion_context *fusion;
4320
4321         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4322
4323         fusion = instance->ctrl_context;
4324
4325         for (i = 0; i < instance->max_scsi_cmds; i++) {
4326                 cmd_fusion = fusion->cmd_list[i];
4327                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4328                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4329                                 " SMID: %d\n", cmd_fusion->index);
4330                         ret = cmd_fusion->index;
4331                         break;
4332                 }
4333         }
4334
4335         return ret;
4336 }
4337
4338 /*
4339 * megasas_get_tm_devhandle - Get devhandle for TM request
4340 * @sdev-                     OS provided scsi device
4341 *
4342 * Returns-                   devhandle/targetID of SCSI device
4343 */
4344 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4345 {
4346         u16 pd_index = 0;
4347         u32 device_id;
4348         struct megasas_instance *instance;
4349         struct fusion_context *fusion;
4350         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4351         u16 devhandle = (u16)ULONG_MAX;
4352
4353         instance = (struct megasas_instance *)sdev->host->hostdata;
4354         fusion = instance->ctrl_context;
4355
4356         if (!MEGASAS_IS_LOGICAL(sdev)) {
4357                 if (instance->use_seqnum_jbod_fp) {
4358                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4359                                     + sdev->id;
4360                         pd_sync = (void *)fusion->pd_seq_sync
4361                                         [(instance->pd_seq_map_id - 1) & 1];
4362                         devhandle = pd_sync->seq[pd_index].devHandle;
4363                 } else
4364                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4365                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4366         } else {
4367                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4368                                 + sdev->id;
4369                 devhandle = device_id;
4370         }
4371
4372         return devhandle;
4373 }
4374
4375 /*
4376  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4377  * @scmd : pointer to scsi command object
4378  *
4379  * Return SUCCESS, if command aborted else FAILED
4380  */
4381
4382 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4383 {
4384         struct megasas_instance *instance;
4385         u16 smid, devhandle;
4386         int ret;
4387         struct MR_PRIV_DEVICE *mr_device_priv_data;
4388         mr_device_priv_data = scmd->device->hostdata;
4389
4390         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4391
4392         scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd);
4393         scsi_print_command(scmd);
4394
4395         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4396                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4397                 "SCSI host:%d\n", instance->host->host_no);
4398                 ret = FAILED;
4399                 return ret;
4400         }
4401
4402         if (!mr_device_priv_data) {
4403                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4404                         "scmd(%p)\n", scmd);
4405                 scmd->result = DID_NO_CONNECT << 16;
4406                 ret = SUCCESS;
4407                 goto out;
4408         }
4409
4410         if (!mr_device_priv_data->is_tm_capable) {
4411                 ret = FAILED;
4412                 goto out;
4413         }
4414
4415         mutex_lock(&instance->reset_mutex);
4416
4417         smid = megasas_fusion_smid_lookup(scmd);
4418
4419         if (!smid) {
4420                 ret = SUCCESS;
4421                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4422                         " issued is not found in oustanding commands\n");
4423                 mutex_unlock(&instance->reset_mutex);
4424                 goto out;
4425         }
4426
4427         devhandle = megasas_get_tm_devhandle(scmd->device);
4428
4429         if (devhandle == (u16)ULONG_MAX) {
4430                 ret = SUCCESS;
4431                 sdev_printk(KERN_INFO, scmd->device,
4432                         "task abort issued for invalid devhandle\n");
4433                 mutex_unlock(&instance->reset_mutex);
4434                 goto out;
4435         }
4436         sdev_printk(KERN_INFO, scmd->device,
4437                 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
4438                 scmd, devhandle);
4439
4440         mr_device_priv_data->tm_busy = 1;
4441         ret = megasas_issue_tm(instance, devhandle,
4442                         scmd->device->channel, scmd->device->id, smid,
4443                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4444                         mr_device_priv_data);
4445         mr_device_priv_data->tm_busy = 0;
4446
4447         mutex_unlock(&instance->reset_mutex);
4448 out:
4449         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
4450                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4451
4452         return ret;
4453 }
4454
4455 /*
4456  * megasas_reset_target_fusion : target reset function for fusion adapters
4457  * scmd: SCSI command pointer
4458  *
4459  * Returns SUCCESS if all commands associated with target aborted else FAILED
4460  */
4461
4462 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4463 {
4464
4465         struct megasas_instance *instance;
4466         int ret = FAILED;
4467         u16 devhandle;
4468         struct MR_PRIV_DEVICE *mr_device_priv_data;
4469         mr_device_priv_data = scmd->device->hostdata;
4470
4471         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4472
4473         sdev_printk(KERN_INFO, scmd->device,
4474                     "target reset called for scmd(%p)\n", scmd);
4475
4476         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4477                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4478                 "SCSI host:%d\n", instance->host->host_no);
4479                 ret = FAILED;
4480                 return ret;
4481         }
4482
4483         if (!mr_device_priv_data) {
4484                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4485                         "scmd(%p)\n", scmd);
4486                 scmd->result = DID_NO_CONNECT << 16;
4487                 ret = SUCCESS;
4488                 goto out;
4489         }
4490
4491         if (!mr_device_priv_data->is_tm_capable) {
4492                 ret = FAILED;
4493                 goto out;
4494         }
4495
4496         mutex_lock(&instance->reset_mutex);
4497         devhandle = megasas_get_tm_devhandle(scmd->device);
4498
4499         if (devhandle == (u16)ULONG_MAX) {
4500                 ret = SUCCESS;
4501                 sdev_printk(KERN_INFO, scmd->device,
4502                         "target reset issued for invalid devhandle\n");
4503                 mutex_unlock(&instance->reset_mutex);
4504                 goto out;
4505         }
4506
4507         sdev_printk(KERN_INFO, scmd->device,
4508                 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
4509                 scmd, devhandle);
4510         mr_device_priv_data->tm_busy = 1;
4511         ret = megasas_issue_tm(instance, devhandle,
4512                         scmd->device->channel, scmd->device->id, 0,
4513                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4514                         mr_device_priv_data);
4515         mr_device_priv_data->tm_busy = 0;
4516         mutex_unlock(&instance->reset_mutex);
4517 out:
4518         scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
4519                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4520
4521         return ret;
4522 }
4523
4524 /*SRIOV get other instance in cluster if any*/
4525 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4526 {
4527         int i;
4528
4529         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4530                 if (megasas_mgmt_info.instance[i] &&
4531                         (megasas_mgmt_info.instance[i] != instance) &&
4532                          megasas_mgmt_info.instance[i]->requestorId &&
4533                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4534                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4535                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4536                         return megasas_mgmt_info.instance[i];
4537         }
4538         return NULL;
4539 }
4540
4541 /* Check for a second path that is currently UP */
4542 int megasas_check_mpio_paths(struct megasas_instance *instance,
4543         struct scsi_cmnd *scmd)
4544 {
4545         struct megasas_instance *peer_instance = NULL;
4546         int retval = (DID_REQUEUE << 16);
4547
4548         if (instance->peerIsPresent) {
4549                 peer_instance = megasas_get_peer_instance(instance);
4550                 if ((peer_instance) &&
4551                         (atomic_read(&peer_instance->adprecovery) ==
4552                         MEGASAS_HBA_OPERATIONAL))
4553                         retval = (DID_NO_CONNECT << 16);
4554         }
4555         return retval;
4556 }
4557
4558 /* Core fusion reset function */
4559 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4560 {
4561         int retval = SUCCESS, i, j, convert = 0;
4562         struct megasas_instance *instance;
4563         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4564         struct fusion_context *fusion;
4565         u32 abs_state, status_reg, reset_adapter;
4566         u32 io_timeout_in_crash_mode = 0;
4567         struct scsi_cmnd *scmd_local = NULL;
4568         struct scsi_device *sdev;
4569         int ret_target_prop = DCMD_FAILED;
4570         bool is_target_prop = false;
4571
4572         instance = (struct megasas_instance *)shost->hostdata;
4573         fusion = instance->ctrl_context;
4574
4575         mutex_lock(&instance->reset_mutex);
4576
4577         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4578                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4579                        "returning FAILED for scsi%d.\n",
4580                         instance->host->host_no);
4581                 mutex_unlock(&instance->reset_mutex);
4582                 return FAILED;
4583         }
4584         status_reg = instance->instancet->read_fw_status_reg(instance);
4585         abs_state = status_reg & MFI_STATE_MASK;
4586
4587         /* IO timeout detected, forcibly put FW in FAULT state */
4588         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4589                 instance->crash_dump_app_support && reason) {
4590                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4591                         "forcibly FAULT Firmware\n");
4592                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4593                 status_reg = megasas_readl(instance, &instance->reg_set->doorbell);
4594                 writel(status_reg | MFI_STATE_FORCE_OCR,
4595                         &instance->reg_set->doorbell);
4596                 readl(&instance->reg_set->doorbell);
4597                 mutex_unlock(&instance->reset_mutex);
4598                 do {
4599                         ssleep(3);
4600                         io_timeout_in_crash_mode++;
4601                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4602                                 "seconds for crash dump collection and OCR "
4603                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4604                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4605                         (io_timeout_in_crash_mode < 80));
4606
4607                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4608                         dev_info(&instance->pdev->dev, "OCR done for IO "
4609                                 "timeout case\n");
4610                         retval = SUCCESS;
4611                 } else {
4612                         dev_info(&instance->pdev->dev, "Controller is not "
4613                                 "operational after 240 seconds wait for IO "
4614                                 "timeout case in FW crash dump mode\n do "
4615                                 "OCR/kill adapter\n");
4616                         retval = megasas_reset_fusion(shost, 0);
4617                 }
4618                 return retval;
4619         }
4620
4621         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4622                 del_timer_sync(&instance->sriov_heartbeat_timer);
4623         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4624         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4625         instance->instancet->disable_intr(instance);
4626         megasas_sync_irqs((unsigned long)instance);
4627
4628         /* First try waiting for commands to complete */
4629         if (megasas_wait_for_outstanding_fusion(instance, reason,
4630                                                 &convert)) {
4631                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4632                 dev_warn(&instance->pdev->dev, "resetting fusion "
4633                        "adapter scsi%d.\n", instance->host->host_no);
4634                 if (convert)
4635                         reason = 0;
4636
4637                 if (megasas_dbg_lvl & OCR_LOGS)
4638                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4639
4640                 /* Now return commands back to the OS */
4641                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4642                         cmd_fusion = fusion->cmd_list[i];
4643                         /*check for extra commands issued by driver*/
4644                         if (instance->adapter_type >= VENTURA_SERIES) {
4645                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4646                                 megasas_return_cmd_fusion(instance, r1_cmd);
4647                         }
4648                         scmd_local = cmd_fusion->scmd;
4649                         if (cmd_fusion->scmd) {
4650                                 if (megasas_dbg_lvl & OCR_LOGS) {
4651                                         sdev_printk(KERN_INFO,
4652                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4653                                                 cmd_fusion->index);
4654                                         scsi_print_command(cmd_fusion->scmd);
4655                                 }
4656
4657                                 scmd_local->result =
4658                                         megasas_check_mpio_paths(instance,
4659                                                         scmd_local);
4660                                 if (instance->ldio_threshold &&
4661                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4662                                         atomic_dec(&instance->ldio_outstanding);
4663                                 megasas_return_cmd_fusion(instance, cmd_fusion);
4664                                 scsi_dma_unmap(scmd_local);
4665                                 scmd_local->scsi_done(scmd_local);
4666                         }
4667                 }
4668
4669                 atomic_set(&instance->fw_outstanding, 0);
4670
4671                 status_reg = instance->instancet->read_fw_status_reg(instance);
4672                 abs_state = status_reg & MFI_STATE_MASK;
4673                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4674                 if (instance->disableOnlineCtrlReset ||
4675                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4676                         /* Reset not supported, kill adapter */
4677                         dev_warn(&instance->pdev->dev, "Reset not supported"
4678                                ", killing adapter scsi%d.\n",
4679                                 instance->host->host_no);
4680                         megaraid_sas_kill_hba(instance);
4681                         instance->skip_heartbeat_timer_del = 1;
4682                         retval = FAILED;
4683                         goto out;
4684                 }
4685
4686                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4687                 if (instance->requestorId && !reason) {
4688                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4689                         goto transition_to_ready;
4690                 }
4691
4692                 /* Now try to reset the chip */
4693                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
4694
4695                         if (instance->instancet->adp_reset
4696                                 (instance, instance->reg_set))
4697                                 continue;
4698 transition_to_ready:
4699                         /* Wait for FW to become ready */
4700                         if (megasas_transition_to_ready(instance, 1)) {
4701                                 dev_warn(&instance->pdev->dev,
4702                                         "Failed to transition controller to ready for "
4703                                         "scsi%d.\n", instance->host->host_no);
4704                                 if (instance->requestorId && !reason)
4705                                         goto fail_kill_adapter;
4706                                 else
4707                                         continue;
4708                         }
4709                         megasas_reset_reply_desc(instance);
4710                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4711
4712                         if (megasas_ioc_init_fusion(instance)) {
4713                                 if (instance->requestorId && !reason)
4714                                         goto fail_kill_adapter;
4715                                 else
4716                                         continue;
4717                         }
4718
4719                         if (megasas_get_ctrl_info(instance)) {
4720                                 dev_info(&instance->pdev->dev,
4721                                         "Failed from %s %d\n",
4722                                         __func__, __LINE__);
4723                                 megaraid_sas_kill_hba(instance);
4724                                 retval = FAILED;
4725                                 goto out;
4726                         }
4727
4728                         megasas_refire_mgmt_cmd(instance);
4729
4730                         /* Reset load balance info */
4731                         if (fusion->load_balance_info)
4732                                 memset(fusion->load_balance_info, 0,
4733                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
4734                                        MAX_LOGICAL_DRIVES_EXT));
4735
4736                         if (!megasas_get_map_info(instance))
4737                                 megasas_sync_map_info(instance);
4738
4739                         megasas_setup_jbod_map(instance);
4740
4741                         /* reset stream detection array */
4742                         if (instance->adapter_type >= VENTURA_SERIES) {
4743                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
4744                                         memset(fusion->stream_detect_by_ld[j],
4745                                         0, sizeof(struct LD_STREAM_DETECT));
4746                                  fusion->stream_detect_by_ld[j]->mru_bit_map
4747                                                 = MR_STREAM_BITMAP;
4748                                 }
4749                         }
4750
4751                         clear_bit(MEGASAS_FUSION_IN_RESET,
4752                                   &instance->reset_flags);
4753                         instance->instancet->enable_intr(instance);
4754
4755                         shost_for_each_device(sdev, shost) {
4756                                 if ((instance->tgt_prop) &&
4757                                     (instance->nvme_page_size))
4758                                         ret_target_prop = megasas_get_target_prop(instance, sdev);
4759
4760                                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
4761                                 megasas_set_dynamic_target_properties(sdev, is_target_prop);
4762                         }
4763
4764                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4765
4766                         dev_info(&instance->pdev->dev, "Interrupts are enabled and"
4767                                 " controller is OPERATIONAL for scsi:%d\n",
4768                                 instance->host->host_no);
4769
4770                         /* Restart SR-IOV heartbeat */
4771                         if (instance->requestorId) {
4772                                 if (!megasas_sriov_start_heartbeat(instance, 0))
4773                                         megasas_start_timer(instance);
4774                                 else
4775                                         instance->skip_heartbeat_timer_del = 1;
4776                         }
4777
4778                         if (instance->crash_dump_drv_support &&
4779                                 instance->crash_dump_app_support)
4780                                 megasas_set_crash_dump_params(instance,
4781                                         MR_CRASH_BUF_TURN_ON);
4782                         else
4783                                 megasas_set_crash_dump_params(instance,
4784                                         MR_CRASH_BUF_TURN_OFF);
4785
4786                         if (instance->snapdump_wait_time) {
4787                                 megasas_get_snapdump_properties(instance);
4788                                 dev_info(&instance->pdev->dev,
4789                                          "Snap dump wait time\t: %d\n",
4790                                          instance->snapdump_wait_time);
4791                         }
4792
4793                         retval = SUCCESS;
4794
4795                         /* Adapter reset completed successfully */
4796                         dev_warn(&instance->pdev->dev,
4797                                  "Reset successful for scsi%d.\n",
4798                                  instance->host->host_no);
4799
4800                         goto out;
4801                 }
4802 fail_kill_adapter:
4803                 /* Reset failed, kill the adapter */
4804                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
4805                        "adapter scsi%d.\n", instance->host->host_no);
4806                 megaraid_sas_kill_hba(instance);
4807                 instance->skip_heartbeat_timer_del = 1;
4808                 retval = FAILED;
4809         } else {
4810                 /* For VF: Restart HB timer if we didn't OCR */
4811                 if (instance->requestorId) {
4812                         megasas_start_timer(instance);
4813                 }
4814                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4815                 instance->instancet->enable_intr(instance);
4816                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4817         }
4818 out:
4819         clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4820         mutex_unlock(&instance->reset_mutex);
4821         return retval;
4822 }
4823
4824 /* Fusion Crash dump collection */
4825 void  megasas_fusion_crash_dump(struct megasas_instance *instance)
4826 {
4827         u32 status_reg;
4828         u8 partial_copy = 0;
4829         int wait = 0;
4830
4831
4832         status_reg = instance->instancet->read_fw_status_reg(instance);
4833
4834         /*
4835          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
4836          * to host crash buffers
4837          */
4838         if (instance->drv_buf_index == 0) {
4839                 /* Buffer is already allocated for old Crash dump.
4840                  * Do OCR and do not wait for crash dump collection
4841                  */
4842                 if (instance->drv_buf_alloc) {
4843                         dev_info(&instance->pdev->dev, "earlier crash dump is "
4844                                 "not yet copied by application, ignoring this "
4845                                 "crash dump and initiating OCR\n");
4846                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4847                         writel(status_reg,
4848                                 &instance->reg_set->outbound_scratch_pad_0);
4849                         readl(&instance->reg_set->outbound_scratch_pad_0);
4850                         return;
4851                 }
4852                 megasas_alloc_host_crash_buffer(instance);
4853                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
4854                         "allocated: %d\n", instance->drv_buf_alloc);
4855         }
4856
4857         while (!(status_reg & MFI_STATE_CRASH_DUMP_DONE) &&
4858                (wait < MEGASAS_WATCHDOG_WAIT_COUNT)) {
4859                 if (!(status_reg & MFI_STATE_DMADONE)) {
4860                         /*
4861                          * Next crash dump buffer is not yet DMA'd by FW
4862                          * Check after 10ms. Wait for 1 second for FW to
4863                          * post the next buffer. If not bail out.
4864                          */
4865                         wait++;
4866                         msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
4867                         status_reg = instance->instancet->read_fw_status_reg(
4868                                         instance);
4869                         continue;
4870                 }
4871
4872                 wait = 0;
4873                 if (instance->drv_buf_index >= instance->drv_buf_alloc) {
4874                         dev_info(&instance->pdev->dev,
4875                                  "Driver is done copying the buffer: %d\n",
4876                                  instance->drv_buf_alloc);
4877                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4878                         partial_copy = 1;
4879                         break;
4880                 } else {
4881                         memcpy(instance->crash_buf[instance->drv_buf_index],
4882                                instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
4883                         instance->drv_buf_index++;
4884                         status_reg &= ~MFI_STATE_DMADONE;
4885                 }
4886
4887                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
4888                 readl(&instance->reg_set->outbound_scratch_pad_0);
4889
4890                 msleep(MEGASAS_WAIT_FOR_NEXT_DMA_MSECS);
4891                 status_reg = instance->instancet->read_fw_status_reg(instance);
4892         }
4893
4894         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
4895                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
4896                         "of copied buffers: %d\n", instance->drv_buf_index);
4897                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
4898                 instance->fw_crash_state = AVAILABLE;
4899                 instance->drv_buf_index = 0;
4900                 writel(status_reg, &instance->reg_set->outbound_scratch_pad_0);
4901                 readl(&instance->reg_set->outbound_scratch_pad_0);
4902                 if (!partial_copy)
4903                         megasas_reset_fusion(instance->host, 0);
4904         }
4905 }
4906
4907
4908 /* Fusion OCR work queue */
4909 void megasas_fusion_ocr_wq(struct work_struct *work)
4910 {
4911         struct megasas_instance *instance =
4912                 container_of(work, struct megasas_instance, work_init);
4913
4914         megasas_reset_fusion(instance->host, 0);
4915 }
4916
4917 /* Allocate fusion context */
4918 int
4919 megasas_alloc_fusion_context(struct megasas_instance *instance)
4920 {
4921         struct fusion_context *fusion;
4922
4923         instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
4924                                          GFP_KERNEL);
4925         if (!instance->ctrl_context) {
4926                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4927                         __func__, __LINE__);
4928                 return -ENOMEM;
4929         }
4930
4931         fusion = instance->ctrl_context;
4932
4933         fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4934                                               sizeof(LD_SPAN_INFO));
4935         fusion->log_to_span =
4936                 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4937                                                 fusion->log_to_span_pages);
4938         if (!fusion->log_to_span) {
4939                 fusion->log_to_span =
4940                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
4941                                            sizeof(LD_SPAN_INFO)));
4942                 if (!fusion->log_to_span) {
4943                         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4944                                 __func__, __LINE__);
4945                         return -ENOMEM;
4946                 }
4947         }
4948
4949         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4950                 sizeof(struct LD_LOAD_BALANCE_INFO));
4951         fusion->load_balance_info =
4952                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4953                 fusion->load_balance_info_pages);
4954         if (!fusion->load_balance_info) {
4955                 fusion->load_balance_info =
4956                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
4957                                            sizeof(struct LD_LOAD_BALANCE_INFO)));
4958                 if (!fusion->load_balance_info)
4959                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
4960                                 "continuing without Load Balance support\n");
4961         }
4962
4963         return 0;
4964 }
4965
4966 void
4967 megasas_free_fusion_context(struct megasas_instance *instance)
4968 {
4969         struct fusion_context *fusion = instance->ctrl_context;
4970
4971         if (fusion) {
4972                 if (fusion->load_balance_info) {
4973                         if (is_vmalloc_addr(fusion->load_balance_info))
4974                                 vfree(fusion->load_balance_info);
4975                         else
4976                                 free_pages((ulong)fusion->load_balance_info,
4977                                         fusion->load_balance_info_pages);
4978                 }
4979
4980                 if (fusion->log_to_span) {
4981                         if (is_vmalloc_addr(fusion->log_to_span))
4982                                 vfree(fusion->log_to_span);
4983                         else
4984                                 free_pages((ulong)fusion->log_to_span,
4985                                            fusion->log_to_span_pages);
4986                 }
4987
4988                 kfree(fusion);
4989         }
4990 }
4991
4992 struct megasas_instance_template megasas_instance_template_fusion = {
4993         .enable_intr = megasas_enable_intr_fusion,
4994         .disable_intr = megasas_disable_intr_fusion,
4995         .clear_intr = megasas_clear_intr_fusion,
4996         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
4997         .adp_reset = megasas_adp_reset_fusion,
4998         .check_reset = megasas_check_reset_fusion,
4999         .service_isr = megasas_isr_fusion,
5000         .tasklet = megasas_complete_cmd_dpc_fusion,
5001         .init_adapter = megasas_init_adapter_fusion,
5002         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
5003         .issue_dcmd = megasas_issue_dcmd_fusion,
5004 };