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) 2013-2014  Avago Technologies
   6  *
   7  *  This program is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU General Public License
   9  *  as published by the Free Software Foundation; either version 2
  10  *  of the License, or (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  *  FILE: megaraid_sas_fusion.c
  21  *
  22  *  Authors: Avago Technologies
  23  *           Sumant Patro
  24  *           Adam Radford
  25  *           Kashyap Desai <kashyap.desai@avagotech.com>
  26  *           Sumit Saxena <sumit.saxena@avagotech.com>
  27  *
  28  *  Send feedback to: megaraidlinux.pdl@avagotech.com
  29  *
  30  *  Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
  31  *  San Jose, California 95131
  32  */
  33
  34 #include <linux/kernel.h>
  35 #include <linux/types.h>
  36 #include <linux/pci.h>
  37 #include <linux/list.h>
  38 #include <linux/moduleparam.h>
  39 #include <linux/module.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/delay.h>
  43 #include <linux/uio.h>
  44 #include <linux/uaccess.h>
  45 #include <linux/fs.h>
  46 #include <linux/compat.h>
  47 #include <linux/blkdev.h>
  48 #include <linux/mutex.h>
  49 #include <linux/poll.h>
  50 #include <linux/vmalloc.h>
  51
  52 #include <scsi/scsi.h>
  53 #include <scsi/scsi_cmnd.h>
  54 #include <scsi/scsi_device.h>
  55 #include <scsi/scsi_host.h>
  56 #include <scsi/scsi_dbg.h>
  57 #include <linux/dmi.h>
  58
  59 #include "megaraid_sas_fusion.h"
  60 #include "megaraid_sas.h"
  61
  62
  63 extern void megasas_free_cmds(struct megasas_instance *instance);
  64 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
  65                                            *instance);
  66 extern void
  67 megasas_complete_cmd(struct megasas_instance *instance,
  68                      struct megasas_cmd *cmd, u8 alt_status);
  69 int
  70 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
  71               int seconds);
  72
  73 void
  74 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
  75 int megasas_alloc_cmds(struct megasas_instance *instance);
  76 int
  77 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
  78 int
  79 megasas_issue_polled(struct megasas_instance *instance,
  80                      struct megasas_cmd *cmd);
  81 void
  82 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
  83
  84 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
  85 void megaraid_sas_kill_hba(struct megasas_instance *instance);
  86
  87 extern u32 megasas_dbg_lvl;
  88 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
  89                                   int initial);
  90 void megasas_start_timer(struct megasas_instance *instance);
  91 extern struct megasas_mgmt_info megasas_mgmt_info;
  92 extern unsigned int resetwaittime;
  93 extern unsigned int dual_qdepth_disable;
  94 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
  95 static void megasas_free_reply_fusion(struct megasas_instance *instance);
  96 static inline
  97 void megasas_configure_queue_sizes(struct megasas_instance *instance);
  98
  99 /**
 100  * megasas_check_same_4gb_region -      check if allocation
 101  *                                      crosses same 4GB boundary or not
 102  * @instance -                          adapter's soft instance
 103  * start_addr -                 start address of DMA allocation
 104  * size -                               size of allocation in bytes
 105  * return -                             true : allocation does not cross same
 106  *                                      4GB boundary
 107  *                                      false: allocation crosses same
 108  *                                      4GB boundary
 109  */
 110 static inline bool megasas_check_same_4gb_region
 111         (struct megasas_instance *instance, dma_addr_t start_addr, size_t size)
 112 {
 113         dma_addr_t end_addr;
 114
 115         end_addr = start_addr + size;
 116
 117         if (upper_32_bits(start_addr) != upper_32_bits(end_addr)) {
 118                 dev_err(&instance->pdev->dev,
 119                         "Failed to get same 4GB boundary: start_addr: 0x%llx end_addr: 0x%llx\n",
 120                         (unsigned long long)start_addr,
 121                         (unsigned long long)end_addr);
 122                 return false;
 123         }
 124
 125         return true;
 126 }
 127
 128 /**
 129  * megasas_enable_intr_fusion - Enables interrupts
 130  * @regs:                       MFI register set
 131  */
 132 void
 133 megasas_enable_intr_fusion(struct megasas_instance *instance)
 134 {
 135         struct megasas_register_set __iomem *regs;
 136         regs = instance->reg_set;
 137
 138         instance->mask_interrupts = 0;
 139         /* For Thunderbolt/Invader also clear intr on enable */
 140         writel(~0, &regs->outbound_intr_status);
 141         readl(&regs->outbound_intr_status);
 142
 143         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 144
 145         /* Dummy readl to force pci flush */
 146         readl(&regs->outbound_intr_mask);
 147 }
 148
 149 /**
 150  * megasas_disable_intr_fusion - Disables interrupt
 151  * @regs:                        MFI register set
 152  */
 153 void
 154 megasas_disable_intr_fusion(struct megasas_instance *instance)
 155 {
 156         u32 mask = 0xFFFFFFFF;
 157         u32 status;
 158         struct megasas_register_set __iomem *regs;
 159         regs = instance->reg_set;
 160         instance->mask_interrupts = 1;
 161
 162         writel(mask, &regs->outbound_intr_mask);
 163         /* Dummy readl to force pci flush */
 164         status = readl(&regs->outbound_intr_mask);
 165 }
 166
 167 int
 168 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
 169 {
 170         u32 status;
 171         /*
 172          * Check if it is our interrupt
 173          */
 174         status = readl(&regs->outbound_intr_status);
 175
 176         if (status & 1) {
 177                 writel(status, &regs->outbound_intr_status);
 178                 readl(&regs->outbound_intr_status);
 179                 return 1;
 180         }
 181         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 182                 return 0;
 183
 184         return 1;
 185 }
 186
 187 /**
 188  * megasas_get_cmd_fusion -     Get a command from the free pool
 189  * @instance:           Adapter soft state
 190  *
 191  * Returns a blk_tag indexed mpt frame
 192  */
 193 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 194                                                   *instance, u32 blk_tag)
 195 {
 196         struct fusion_context *fusion;
 197
 198         fusion = instance->ctrl_context;
 199         return fusion->cmd_list[blk_tag];
 200 }
 201
 202 /**
 203  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 204  * @instance:           Adapter soft state
 205  * @cmd:                Command packet to be returned to free command pool
 206  */
 207 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 208         struct megasas_cmd_fusion *cmd)
 209 {
 210         cmd->scmd = NULL;
 211         memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 212         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 213         cmd->cmd_completed = false;
 214 }
 215
 216 /**
 217  * megasas_fire_cmd_fusion -    Sends command to the FW
 218  * @instance:                   Adapter soft state
 219  * @req_desc:                   64bit Request descriptor
 220  *
 221  * Perform PCI Write.
 222  */
 223
 224 static void
 225 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 226                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 227 {
 228 #if defined(writeq) && defined(CONFIG_64BIT)
 229         u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
 230                 le32_to_cpu(req_desc->u.low));
 231
 232         writeq(req_data, &instance->reg_set->inbound_low_queue_port);
 233 #else
 234         unsigned long flags;
 235         spin_lock_irqsave(&instance->hba_lock, flags);
 236         writel(le32_to_cpu(req_desc->u.low),
 237                 &instance->reg_set->inbound_low_queue_port);
 238         writel(le32_to_cpu(req_desc->u.high),
 239                 &instance->reg_set->inbound_high_queue_port);
 240         mmiowb();
 241         spin_unlock_irqrestore(&instance->hba_lock, flags);
 242 #endif
 243 }
 244
 245 /**
 246  * megasas_fusion_update_can_queue -    Do all Adapter Queue depth related calculations here
 247  * @instance:                                                   Adapter soft state
 248  * fw_boot_context:                                             Whether this function called during probe or after OCR
 249  *
 250  * This function is only for fusion controllers.
 251  * Update host can queue, if firmware downgrade max supported firmware commands.
 252  * Firmware upgrade case will be skiped because underlying firmware has
 253  * more resource than exposed to the OS.
 254  *
 255  */
 256 static void
 257 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
 258 {
 259         u16 cur_max_fw_cmds = 0;
 260         u16 ldio_threshold = 0;
 261         struct megasas_register_set __iomem *reg_set;
 262
 263         reg_set = instance->reg_set;
 264
 265         /* ventura FW does not fill outbound_scratch_pad_3 with queue depth */
 266         if (instance->adapter_type < VENTURA_SERIES)
 267                 cur_max_fw_cmds =
 268                 readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF;
 269
 270         if (dual_qdepth_disable || !cur_max_fw_cmds)
 271                 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
 272         else
 273                 ldio_threshold =
 274                         (instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
 275
 276         dev_info(&instance->pdev->dev,
 277                  "Current firmware supports maximum commands: %d\t LDIO threshold: %d\n",
 278                  cur_max_fw_cmds, ldio_threshold);
 279
 280         if (fw_boot_context == OCR_CONTEXT) {
 281                 cur_max_fw_cmds = cur_max_fw_cmds - 1;
 282                 if (cur_max_fw_cmds < instance->max_fw_cmds) {
 283                         instance->cur_can_queue =
 284                                 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
 285                                                 MEGASAS_FUSION_IOCTL_CMDS);
 286                         instance->host->can_queue = instance->cur_can_queue;
 287                         instance->ldio_threshold = ldio_threshold;
 288                 }
 289         } else {
 290                 instance->max_fw_cmds = cur_max_fw_cmds;
 291                 instance->ldio_threshold = ldio_threshold;
 292
 293                 if (reset_devices)
 294                         instance->max_fw_cmds = min(instance->max_fw_cmds,
 295                                                 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
 296                 /*
 297                 * Reduce the max supported cmds by 1. This is to ensure that the
 298                 * reply_q_sz (1 more than the max cmd that driver may send)
 299                 * does not exceed max cmds that the FW can support
 300                 */
 301                 instance->max_fw_cmds = instance->max_fw_cmds-1;
 302         }
 303 }
 304 /**
 305  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
 306  * @instance:           Adapter soft state
 307  */
 308 void
 309 megasas_free_cmds_fusion(struct megasas_instance *instance)
 310 {
 311         int i;
 312         struct fusion_context *fusion = instance->ctrl_context;
 313         struct megasas_cmd_fusion *cmd;
 314
 315         if (fusion->sense)
 316                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 317                               fusion->sense_phys_addr);
 318
 319         /* SG */
 320         if (fusion->cmd_list) {
 321                 for (i = 0; i < instance->max_mpt_cmds; i++) {
 322                         cmd = fusion->cmd_list[i];
 323                         if (cmd) {
 324                                 if (cmd->sg_frame)
 325                                         dma_pool_free(fusion->sg_dma_pool,
 326                                                       cmd->sg_frame,
 327                                                       cmd->sg_frame_phys_addr);
 328                         }
 329                         kfree(cmd);
 330                 }
 331                 kfree(fusion->cmd_list);
 332         }
 333
 334         if (fusion->sg_dma_pool) {
 335                 dma_pool_destroy(fusion->sg_dma_pool);
 336                 fusion->sg_dma_pool = NULL;
 337         }
 338         if (fusion->sense_dma_pool) {
 339                 dma_pool_destroy(fusion->sense_dma_pool);
 340                 fusion->sense_dma_pool = NULL;
 341         }
 342
 343
 344         /* Reply Frame, Desc*/
 345         if (instance->is_rdpq)
 346                 megasas_free_rdpq_fusion(instance);
 347         else
 348                 megasas_free_reply_fusion(instance);
 349
 350         /* Request Frame, Desc*/
 351         if (fusion->req_frames_desc)
 352                 dma_free_coherent(&instance->pdev->dev,
 353                         fusion->request_alloc_sz, fusion->req_frames_desc,
 354                         fusion->req_frames_desc_phys);
 355         if (fusion->io_request_frames)
 356                 dma_pool_free(fusion->io_request_frames_pool,
 357                         fusion->io_request_frames,
 358                         fusion->io_request_frames_phys);
 359         if (fusion->io_request_frames_pool) {
 360                 dma_pool_destroy(fusion->io_request_frames_pool);
 361                 fusion->io_request_frames_pool = NULL;
 362         }
 363 }
 364
 365 /**
 366  * megasas_create_sg_sense_fusion -     Creates DMA pool for cmd frames
 367  * @instance:                   Adapter soft state
 368  *
 369  */
 370 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 371 {
 372         int i;
 373         u16 max_cmd;
 374         struct fusion_context *fusion;
 375         struct megasas_cmd_fusion *cmd;
 376         int sense_sz;
 377         u32 offset;
 378
 379         fusion = instance->ctrl_context;
 380         max_cmd = instance->max_fw_cmds;
 381         sense_sz = instance->max_mpt_cmds * SCSI_SENSE_BUFFERSIZE;
 382
 383         fusion->sg_dma_pool =
 384                         dma_pool_create("mr_sg", &instance->pdev->dev,
 385                                 instance->max_chain_frame_sz,
 386                                 MR_DEFAULT_NVME_PAGE_SIZE, 0);
 387         /* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
 388         fusion->sense_dma_pool =
 389                         dma_pool_create("mr_sense", &instance->pdev->dev,
 390                                 sense_sz, 64, 0);
 391
 392         if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
 393                 dev_err(&instance->pdev->dev,
 394                         "Failed from %s %d\n",  __func__, __LINE__);
 395                 return -ENOMEM;
 396         }
 397
 398         fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 399                                        GFP_KERNEL, &fusion->sense_phys_addr);
 400         if (!fusion->sense) {
 401                 dev_err(&instance->pdev->dev,
 402                         "failed from %s %d\n",  __func__, __LINE__);
 403                 return -ENOMEM;
 404         }
 405
 406         /* sense buffer, request frame and reply desc pool requires to be in
 407          * same 4 gb region. Below function will check this.
 408          * In case of failure, new pci pool will be created with updated
 409          * alignment.
 410          * Older allocation and pool will be destroyed.
 411          * Alignment will be used such a way that next allocation if success,
 412          * will always meet same 4gb region requirement.
 413          * Actual requirement is not alignment, but we need start and end of
 414          * DMA address must have same upper 32 bit address.
 415          */
 416
 417         if (!megasas_check_same_4gb_region(instance, fusion->sense_phys_addr,
 418                                            sense_sz)) {
 419                 dma_pool_free(fusion->sense_dma_pool, fusion->sense,
 420                               fusion->sense_phys_addr);
 421                 fusion->sense = NULL;
 422                 dma_pool_destroy(fusion->sense_dma_pool);
 423
 424                 fusion->sense_dma_pool =
 425                         dma_pool_create("mr_sense_align", &instance->pdev->dev,
 426                                         sense_sz, roundup_pow_of_two(sense_sz),
 427                                         0);
 428                 if (!fusion->sense_dma_pool) {
 429                         dev_err(&instance->pdev->dev,
 430                                 "Failed from %s %d\n",  __func__, __LINE__);
 431                         return -ENOMEM;
 432                 }
 433                 fusion->sense = dma_pool_alloc(fusion->sense_dma_pool,
 434                                                GFP_KERNEL,
 435                                                &fusion->sense_phys_addr);
 436                 if (!fusion->sense) {
 437                         dev_err(&instance->pdev->dev,
 438                                 "failed from %s %d\n",  __func__, __LINE__);
 439                         return -ENOMEM;
 440                 }
 441         }
 442
 443         /*
 444          * Allocate and attach a frame to each of the commands in cmd_list
 445          */
 446         for (i = 0; i < max_cmd; i++) {
 447                 cmd = fusion->cmd_list[i];
 448                 cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
 449                                         GFP_KERNEL, &cmd->sg_frame_phys_addr);
 450
 451                 offset = SCSI_SENSE_BUFFERSIZE * i;
 452                 cmd->sense = (u8 *)fusion->sense + offset;
 453                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 454
 455                 if (!cmd->sg_frame) {
 456                         dev_err(&instance->pdev->dev,
 457                                 "Failed from %s %d\n",  __func__, __LINE__);
 458                         return -ENOMEM;
 459                 }
 460         }
 461
 462         /* create sense buffer for the raid 1/10 fp */
 463         for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
 464                 cmd = fusion->cmd_list[i];
 465                 offset = SCSI_SENSE_BUFFERSIZE * i;
 466                 cmd->sense = (u8 *)fusion->sense + offset;
 467                 cmd->sense_phys_addr = fusion->sense_phys_addr + offset;
 468
 469         }
 470
 471         return 0;
 472 }
 473
 474 int
 475 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
 476 {
 477         u32 max_mpt_cmd, i, j;
 478         struct fusion_context *fusion;
 479
 480         fusion = instance->ctrl_context;
 481
 482         max_mpt_cmd = instance->max_mpt_cmds;
 483
 484         /*
 485          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
 486          * Allocate the dynamic array first and then allocate individual
 487          * commands.
 488          */
 489         fusion->cmd_list =
 490                 kzalloc(sizeof(struct megasas_cmd_fusion *) * max_mpt_cmd,
 491                         GFP_KERNEL);
 492         if (!fusion->cmd_list) {
 493                 dev_err(&instance->pdev->dev,
 494                         "Failed from %s %d\n",  __func__, __LINE__);
 495                 return -ENOMEM;
 496         }
 497
 498         for (i = 0; i < max_mpt_cmd; i++) {
 499                 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
 500                                               GFP_KERNEL);
 501                 if (!fusion->cmd_list[i]) {
 502                         for (j = 0; j < i; j++)
 503                                 kfree(fusion->cmd_list[j]);
 504                         kfree(fusion->cmd_list);
 505                         dev_err(&instance->pdev->dev,
 506                                 "Failed from %s %d\n",  __func__, __LINE__);
 507                         return -ENOMEM;
 508                 }
 509         }
 510
 511         return 0;
 512 }
 513 int
 514 megasas_alloc_request_fusion(struct megasas_instance *instance)
 515 {
 516         struct fusion_context *fusion;
 517
 518         fusion = instance->ctrl_context;
 519
 520 retry_alloc:
 521         fusion->io_request_frames_pool =
 522                         dma_pool_create("mr_ioreq", &instance->pdev->dev,
 523                                 fusion->io_frames_alloc_sz, 16, 0);
 524
 525         if (!fusion->io_request_frames_pool) {
 526                 dev_err(&instance->pdev->dev,
 527                         "Failed from %s %d\n",  __func__, __LINE__);
 528                 return -ENOMEM;
 529         }
 530
 531         fusion->io_request_frames =
 532                         dma_pool_alloc(fusion->io_request_frames_pool,
 533                                 GFP_KERNEL, &fusion->io_request_frames_phys);
 534         if (!fusion->io_request_frames) {
 535                 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
 536                         instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
 537                         dma_pool_destroy(fusion->io_request_frames_pool);
 538                         megasas_configure_queue_sizes(instance);
 539                         goto retry_alloc;
 540                 } else {
 541                         dev_err(&instance->pdev->dev,
 542                                 "Failed from %s %d\n",  __func__, __LINE__);
 543                         return -ENOMEM;
 544                 }
 545         }
 546
 547         if (!megasas_check_same_4gb_region(instance,
 548                                            fusion->io_request_frames_phys,
 549                                            fusion->io_frames_alloc_sz)) {
 550                 dma_pool_free(fusion->io_request_frames_pool,
 551                               fusion->io_request_frames,
 552                               fusion->io_request_frames_phys);
 553                 fusion->io_request_frames = NULL;
 554                 dma_pool_destroy(fusion->io_request_frames_pool);
 555
 556                 fusion->io_request_frames_pool =
 557                         dma_pool_create("mr_ioreq_align",
 558                                         &instance->pdev->dev,
 559                                         fusion->io_frames_alloc_sz,
 560                                         roundup_pow_of_two(fusion->io_frames_alloc_sz),
 561                                         0);
 562
 563                 if (!fusion->io_request_frames_pool) {
 564                         dev_err(&instance->pdev->dev,
 565                                 "Failed from %s %d\n",  __func__, __LINE__);
 566                         return -ENOMEM;
 567                 }
 568
 569                 fusion->io_request_frames =
 570                         dma_pool_alloc(fusion->io_request_frames_pool,
 571                                        GFP_KERNEL,
 572                                        &fusion->io_request_frames_phys);
 573
 574                 if (!fusion->io_request_frames) {
 575                         dev_err(&instance->pdev->dev,
 576                                 "Failed from %s %d\n",  __func__, __LINE__);
 577                         return -ENOMEM;
 578                 }
 579         }
 580
 581         fusion->req_frames_desc =
 582                 dma_alloc_coherent(&instance->pdev->dev,
 583                                    fusion->request_alloc_sz,
 584                                    &fusion->req_frames_desc_phys, GFP_KERNEL);
 585         if (!fusion->req_frames_desc) {
 586                 dev_err(&instance->pdev->dev,
 587                         "Failed from %s %d\n",  __func__, __LINE__);
 588                 return -ENOMEM;
 589         }
 590
 591         return 0;
 592 }
 593
 594 int
 595 megasas_alloc_reply_fusion(struct megasas_instance *instance)
 596 {
 597         int i, count;
 598         struct fusion_context *fusion;
 599         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 600         fusion = instance->ctrl_context;
 601
 602         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 603         fusion->reply_frames_desc_pool =
 604                         dma_pool_create("mr_reply", &instance->pdev->dev,
 605                                 fusion->reply_alloc_sz * count, 16, 0);
 606
 607         if (!fusion->reply_frames_desc_pool) {
 608                 dev_err(&instance->pdev->dev,
 609                         "Failed from %s %d\n",  __func__, __LINE__);
 610                 return -ENOMEM;
 611         }
 612
 613         fusion->reply_frames_desc[0] =
 614                 dma_pool_alloc(fusion->reply_frames_desc_pool,
 615                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
 616         if (!fusion->reply_frames_desc[0]) {
 617                 dev_err(&instance->pdev->dev,
 618                         "Failed from %s %d\n",  __func__, __LINE__);
 619                 return -ENOMEM;
 620         }
 621
 622         if (!megasas_check_same_4gb_region(instance,
 623                                            fusion->reply_frames_desc_phys[0],
 624                                            (fusion->reply_alloc_sz * count))) {
 625                 dma_pool_free(fusion->reply_frames_desc_pool,
 626                               fusion->reply_frames_desc[0],
 627                               fusion->reply_frames_desc_phys[0]);
 628                 fusion->reply_frames_desc[0] = NULL;
 629                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 630
 631                 fusion->reply_frames_desc_pool =
 632                         dma_pool_create("mr_reply_align",
 633                                         &instance->pdev->dev,
 634                                         fusion->reply_alloc_sz * count,
 635                                         roundup_pow_of_two(fusion->reply_alloc_sz * count),
 636                                         0);
 637
 638                 if (!fusion->reply_frames_desc_pool) {
 639                         dev_err(&instance->pdev->dev,
 640                                 "Failed from %s %d\n",  __func__, __LINE__);
 641                         return -ENOMEM;
 642                 }
 643
 644                 fusion->reply_frames_desc[0] =
 645                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 646                                        GFP_KERNEL,
 647                                        &fusion->reply_frames_desc_phys[0]);
 648
 649                 if (!fusion->reply_frames_desc[0]) {
 650                         dev_err(&instance->pdev->dev,
 651                                 "Failed from %s %d\n",  __func__, __LINE__);
 652                         return -ENOMEM;
 653                 }
 654         }
 655
 656         reply_desc = fusion->reply_frames_desc[0];
 657         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 658                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 659
 660         /* This is not a rdpq mode, but driver still populate
 661          * reply_frame_desc array to use same msix index in ISR path.
 662          */
 663         for (i = 0; i < (count - 1); i++)
 664                 fusion->reply_frames_desc[i + 1] =
 665                         fusion->reply_frames_desc[i] +
 666                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
 667
 668         return 0;
 669 }
 670
 671 int
 672 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 673 {
 674         int i, j, k, msix_count;
 675         struct fusion_context *fusion;
 676         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 677         union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
 678         dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
 679         u8 dma_alloc_count, abs_index;
 680         u32 chunk_size, array_size, offset;
 681
 682         fusion = instance->ctrl_context;
 683         chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
 684         array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
 685                      MAX_MSIX_QUEUES_FUSION;
 686
 687         fusion->rdpq_virt = pci_zalloc_consistent(instance->pdev, array_size,
 688                                                   &fusion->rdpq_phys);
 689         if (!fusion->rdpq_virt) {
 690                 dev_err(&instance->pdev->dev,
 691                         "Failed from %s %d\n",  __func__, __LINE__);
 692                 return -ENOMEM;
 693         }
 694
 695         msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 696
 697         fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
 698                                                          &instance->pdev->dev,
 699                                                          chunk_size, 16, 0);
 700         fusion->reply_frames_desc_pool_align =
 701                                 dma_pool_create("mr_rdpq_align",
 702                                                 &instance->pdev->dev,
 703                                                 chunk_size,
 704                                                 roundup_pow_of_two(chunk_size),
 705                                                 0);
 706
 707         if (!fusion->reply_frames_desc_pool ||
 708             !fusion->reply_frames_desc_pool_align) {
 709                 dev_err(&instance->pdev->dev,
 710                         "Failed from %s %d\n",  __func__, __LINE__);
 711                 return -ENOMEM;
 712         }
 713
 714 /*
 715  * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
 716  * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
 717  * within 4GB boundary and also reply queues in a set must have same
 718  * upper 32-bits in their memory address. so here driver is allocating the
 719  * DMA'able memory for reply queues according. Driver uses limitation of
 720  * VENTURA_SERIES to manage INVADER_SERIES as well.
 721  */
 722         dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
 723
 724         for (i = 0; i < dma_alloc_count; i++) {
 725                 rdpq_chunk_virt[i] =
 726                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 727                                        GFP_KERNEL, &rdpq_chunk_phys[i]);
 728                 if (!rdpq_chunk_virt[i]) {
 729                         dev_err(&instance->pdev->dev,
 730                                 "Failed from %s %d\n",  __func__, __LINE__);
 731                         return -ENOMEM;
 732                 }
 733                 /* reply desc pool requires to be in same 4 gb region.
 734                  * Below function will check this.
 735                  * In case of failure, new pci pool will be created with updated
 736                  * alignment.
 737                  * For RDPQ buffers, driver always allocate two separate pci pool.
 738                  * Alignment will be used such a way that next allocation if
 739                  * success, will always meet same 4gb region requirement.
 740                  * rdpq_tracker keep track of each buffer's physical,
 741                  * virtual address and pci pool descriptor. It will help driver
 742                  * while freeing the resources.
 743                  *
 744                  */
 745                 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
 746                                                    chunk_size)) {
 747                         dma_pool_free(fusion->reply_frames_desc_pool,
 748                                       rdpq_chunk_virt[i],
 749                                       rdpq_chunk_phys[i]);
 750
 751                         rdpq_chunk_virt[i] =
 752                                 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
 753                                                GFP_KERNEL, &rdpq_chunk_phys[i]);
 754                         if (!rdpq_chunk_virt[i]) {
 755                                 dev_err(&instance->pdev->dev,
 756                                         "Failed from %s %d\n",
 757                                         __func__, __LINE__);
 758                                 return -ENOMEM;
 759                         }
 760                         fusion->rdpq_tracker[i].dma_pool_ptr =
 761                                         fusion->reply_frames_desc_pool_align;
 762                 } else {
 763                         fusion->rdpq_tracker[i].dma_pool_ptr =
 764                                         fusion->reply_frames_desc_pool;
 765                 }
 766
 767                 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
 768                 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
 769         }
 770
 771         for (k = 0; k < dma_alloc_count; k++) {
 772                 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
 773                         abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
 774
 775                         if (abs_index == msix_count)
 776                                 break;
 777                         offset = fusion->reply_alloc_sz * i;
 778                         fusion->rdpq_virt[abs_index].RDPQBaseAddress =
 779                                         cpu_to_le64(rdpq_chunk_phys[k] + offset);
 780                         fusion->reply_frames_desc_phys[abs_index] =
 781                                         rdpq_chunk_phys[k] + offset;
 782                         fusion->reply_frames_desc[abs_index] =
 783                                         (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
 784
 785                         reply_desc = fusion->reply_frames_desc[abs_index];
 786                         for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
 787                                 reply_desc->Words = ULLONG_MAX;
 788                 }
 789         }
 790
 791         return 0;
 792 }
 793
 794 static void
 795 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 796
 797         int i;
 798         struct fusion_context *fusion;
 799
 800         fusion = instance->ctrl_context;
 801
 802         for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
 803                 if (fusion->rdpq_tracker[i].pool_entry_virt)
 804                         dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
 805                                       fusion->rdpq_tracker[i].pool_entry_virt,
 806                                       fusion->rdpq_tracker[i].pool_entry_phys);
 807
 808         }
 809
 810         if (fusion->reply_frames_desc_pool)
 811                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 812         if (fusion->reply_frames_desc_pool_align)
 813                 dma_pool_destroy(fusion->reply_frames_desc_pool_align);
 814
 815         if (fusion->rdpq_virt)
 816                 pci_free_consistent(instance->pdev,
 817                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 818                         fusion->rdpq_virt, fusion->rdpq_phys);
 819 }
 820
 821 static void
 822 megasas_free_reply_fusion(struct megasas_instance *instance) {
 823
 824         struct fusion_context *fusion;
 825
 826         fusion = instance->ctrl_context;
 827
 828         if (fusion->reply_frames_desc[0])
 829                 dma_pool_free(fusion->reply_frames_desc_pool,
 830                         fusion->reply_frames_desc[0],
 831                         fusion->reply_frames_desc_phys[0]);
 832
 833         if (fusion->reply_frames_desc_pool)
 834                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 835
 836 }
 837
 838
 839 /**
 840  * megasas_alloc_cmds_fusion -  Allocates the command packets
 841  * @instance:           Adapter soft state
 842  *
 843  *
 844  * Each frame has a 32-bit field called context. This context is used to get
 845  * back the megasas_cmd_fusion from the frame when a frame gets completed
 846  * In this driver, the 32 bit values are the indices into an array cmd_list.
 847  * This array is used only to look up the megasas_cmd_fusion given the context.
 848  * The free commands themselves are maintained in a linked list called cmd_pool.
 849  *
 850  * cmds are formed in the io_request and sg_frame members of the
 851  * megasas_cmd_fusion. The context field is used to get a request descriptor
 852  * and is used as SMID of the cmd.
 853  * SMID value range is from 1 to max_fw_cmds.
 854  */
 855 int
 856 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 857 {
 858         int i;
 859         struct fusion_context *fusion;
 860         struct megasas_cmd_fusion *cmd;
 861         u32 offset;
 862         dma_addr_t io_req_base_phys;
 863         u8 *io_req_base;
 864
 865
 866         fusion = instance->ctrl_context;
 867
 868         if (megasas_alloc_request_fusion(instance))
 869                 goto fail_exit;
 870
 871         if (instance->is_rdpq) {
 872                 if (megasas_alloc_rdpq_fusion(instance))
 873                         goto fail_exit;
 874         } else
 875                 if (megasas_alloc_reply_fusion(instance))
 876                         goto fail_exit;
 877
 878         if (megasas_alloc_cmdlist_fusion(instance))
 879                 goto fail_exit;
 880
 881         dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
 882                  instance->max_fw_cmds);
 883
 884         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 885         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 886         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 887
 888         /*
 889          * Add all the commands to command pool (fusion->cmd_pool)
 890          */
 891
 892         /* SMID 0 is reserved. Set SMID/index from 1 */
 893         for (i = 0; i < instance->max_mpt_cmds; i++) {
 894                 cmd = fusion->cmd_list[i];
 895                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
 896                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
 897                 cmd->index = i + 1;
 898                 cmd->scmd = NULL;
 899                 cmd->sync_cmd_idx =
 900                 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
 901                                 (i - instance->max_scsi_cmds) :
 902                                 (u32)ULONG_MAX; /* Set to Invalid */
 903                 cmd->instance = instance;
 904                 cmd->io_request =
 905                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
 906                   (io_req_base + offset);
 907                 memset(cmd->io_request, 0,
 908                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 909                 cmd->io_request_phys_addr = io_req_base_phys + offset;
 910                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 911         }
 912
 913         if (megasas_create_sg_sense_fusion(instance))
 914                 goto fail_exit;
 915
 916         return 0;
 917
 918 fail_exit:
 919         megasas_free_cmds_fusion(instance);
 920         return -ENOMEM;
 921 }
 922
 923 /**
 924  * wait_and_poll -      Issues a polling command
 925  * @instance:                   Adapter soft state
 926  * @cmd:                        Command packet to be issued
 927  *
 928  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 929  */
 930 int
 931 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 932         int seconds)
 933 {
 934         int i;
 935         struct megasas_header *frame_hdr = &cmd->frame->hdr;
 936         struct fusion_context *fusion;
 937
 938         u32 msecs = seconds * 1000;
 939
 940         fusion = instance->ctrl_context;
 941         /*
 942          * Wait for cmd_status to change
 943          */
 944         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
 945                 rmb();
 946                 msleep(20);
 947         }
 948
 949         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
 950                 return DCMD_TIMEOUT;
 951         else if (frame_hdr->cmd_status == MFI_STAT_OK)
 952                 return DCMD_SUCCESS;
 953         else
 954                 return DCMD_FAILED;
 955 }
 956
 957 /**
 958  * megasas_ioc_init_fusion -    Initializes the FW
 959  * @instance:           Adapter soft state
 960  *
 961  * Issues the IOC Init cmd
 962  */
 963 int
 964 megasas_ioc_init_fusion(struct megasas_instance *instance)
 965 {
 966         struct megasas_init_frame *init_frame;
 967         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
 968         dma_addr_t      ioc_init_handle;
 969         struct megasas_cmd *cmd;
 970         u8 ret, cur_rdpq_mode;
 971         struct fusion_context *fusion;
 972         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
 973         int i;
 974         struct megasas_header *frame_hdr;
 975         const char *sys_info;
 976         MFI_CAPABILITIES *drv_ops;
 977         u32 scratch_pad_2;
 978         ktime_t time;
 979         bool cur_fw_64bit_dma_capable;
 980
 981         fusion = instance->ctrl_context;
 982
 983         ioc_init_handle = fusion->ioc_init_request_phys;
 984         IOCInitMessage = fusion->ioc_init_request;
 985
 986         cmd = fusion->ioc_init_cmd;
 987
 988         scratch_pad_2 = readl
 989                 (&instance->reg_set->outbound_scratch_pad_2);
 990
 991         cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
 992
 993         if (instance->adapter_type == INVADER_SERIES) {
 994                 cur_fw_64bit_dma_capable =
 995                         (scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
 996
 997                 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
 998                         dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
 999                                 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1000                         megaraid_sas_kill_hba(instance);
1001                         ret = 1;
1002                         goto fail_fw_init;
1003                 }
1004         }
1005
1006         if (instance->is_rdpq && !cur_rdpq_mode) {
1007                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1008                         " from RDPQ mode to non RDPQ mode\n");
1009                 ret = 1;
1010                 goto fail_fw_init;
1011         }
1012
1013         instance->fw_sync_cache_support = (scratch_pad_2 &
1014                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1015         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1016                  instance->fw_sync_cache_support ? "Yes" : "No");
1017
1018         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1019
1020         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1021         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1022         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1023         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1024         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1025
1026         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1027         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1028                         cpu_to_le64(fusion->rdpq_phys) :
1029                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1030         IOCInitMessage->MsgFlags = instance->is_rdpq ?
1031                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1032         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1033         IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1034         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1035         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1036
1037         time = ktime_get_real();
1038         /* Convert to milliseconds as per FW requirement */
1039         IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1040
1041         init_frame = (struct megasas_init_frame *)cmd->frame;
1042         memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1043
1044         frame_hdr = &cmd->frame->hdr;
1045         frame_hdr->cmd_status = 0xFF;
1046         frame_hdr->flags = cpu_to_le16(
1047                 le16_to_cpu(frame_hdr->flags) |
1048                 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
1076         if (instance->consistent_mask_64bit)
1077                 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1078
1079         /* Convert capability to LE32 */
1080         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1081
1082         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1083         if (instance->system_info_buf && sys_info) {
1084                 memcpy(instance->system_info_buf->systemId, sys_info,
1085                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1086                 instance->system_info_buf->systemIdLength =
1087                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1088                 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1089                 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1090         }
1091
1092         init_frame->queue_info_new_phys_addr_hi =
1093                 cpu_to_le32(upper_32_bits(ioc_init_handle));
1094         init_frame->queue_info_new_phys_addr_lo =
1095                 cpu_to_le32(lower_32_bits(ioc_init_handle));
1096         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1097
1098         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1099         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1100         req_desc.MFAIo.RequestFlags =
1101                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1102                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1103
1104         /*
1105          * disable the intr before firing the init frame
1106          */
1107         instance->instancet->disable_intr(instance);
1108
1109         for (i = 0; i < (10 * 1000); i += 20) {
1110                 if (readl(&instance->reg_set->doorbell) & 1)
1111                         msleep(20);
1112                 else
1113                         break;
1114         }
1115
1116         megasas_fire_cmd_fusion(instance, &req_desc);
1117
1118         wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
1119
1120         frame_hdr = &cmd->frame->hdr;
1121         if (frame_hdr->cmd_status != 0) {
1122                 ret = 1;
1123                 goto fail_fw_init;
1124         }
1125
1126         return 0;
1127
1128 fail_fw_init:
1129         dev_err(&instance->pdev->dev,
1130                 "Init cmd return status FAILED for SCSI host %d\n",
1131                 instance->host->host_no);
1132
1133         return ret;
1134 }
1135
1136 /**
1137  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
1138  * @instance:           Adapter soft state
1139  * @pend:               set to 1, if it is pended jbod map.
1140  *
1141  * Issue Jbod map to the firmware. If it is pended command,
1142  * issue command and return. If it is first instance of jbod map
1143  * issue and receive command.
1144  */
1145 int
1146 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1147         int ret = 0;
1148         u32 pd_seq_map_sz;
1149         struct megasas_cmd *cmd;
1150         struct megasas_dcmd_frame *dcmd;
1151         struct fusion_context *fusion = instance->ctrl_context;
1152         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1153         dma_addr_t pd_seq_h;
1154
1155         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1156         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1157         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
1158                         (sizeof(struct MR_PD_CFG_SEQ) *
1159                         (MAX_PHYSICAL_DEVICES - 1));
1160
1161         cmd = megasas_get_cmd(instance);
1162         if (!cmd) {
1163                 dev_err(&instance->pdev->dev,
1164                         "Could not get mfi cmd. Fail from %s %d\n",
1165                         __func__, __LINE__);
1166                 return -ENOMEM;
1167         }
1168
1169         dcmd = &cmd->frame->dcmd;
1170
1171         memset(pd_sync, 0, pd_seq_map_sz);
1172         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1173
1174         if (pend) {
1175                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1176                 dcmd->flags = MFI_FRAME_DIR_WRITE;
1177                 instance->jbod_seq_cmd = cmd;
1178         } else {
1179                 dcmd->flags = MFI_FRAME_DIR_READ;
1180         }
1181
1182         dcmd->cmd = MFI_CMD_DCMD;
1183         dcmd->cmd_status = 0xFF;
1184         dcmd->sge_count = 1;
1185         dcmd->timeout = 0;
1186         dcmd->pad_0 = 0;
1187         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1188         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1189
1190         megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1191
1192         if (pend) {
1193                 instance->instancet->issue_dcmd(instance, cmd);
1194                 return 0;
1195         }
1196
1197         /* Below code is only for non pended DCMD */
1198         if (!instance->mask_interrupts)
1199                 ret = megasas_issue_blocked_cmd(instance, cmd,
1200                         MFI_IO_TIMEOUT_SECS);
1201         else
1202                 ret = megasas_issue_polled(instance, cmd);
1203
1204         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1205                 dev_warn(&instance->pdev->dev,
1206                         "driver supports max %d JBOD, but FW reports %d\n",
1207                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1208                 ret = -EINVAL;
1209         }
1210
1211         if (ret == DCMD_TIMEOUT)
1212                 megaraid_sas_kill_hba(instance);
1213
1214         if (ret == DCMD_SUCCESS)
1215                 instance->pd_seq_map_id++;
1216
1217         megasas_return_cmd(instance, cmd);
1218         return ret;
1219 }
1220
1221 /*
1222  * megasas_get_ld_map_info -    Returns FW's ld_map structure
1223  * @instance:                           Adapter soft state
1224  * @pend:                               Pend the command or not
1225  * Issues an internal command (DCMD) to get the FW's controller PD
1226  * list structure.  This information is mainly used to find out SYSTEM
1227  * supported by the FW.
1228  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1229  * dcmd.mbox.b[0]       - number of LDs being sync'd
1230  * dcmd.mbox.b[1]       - 0 - complete command immediately.
1231  *                      - 1 - pend till config change
1232  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1233  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1234  *                              uses extended struct MR_FW_RAID_MAP_EXT
1235  */
1236 static int
1237 megasas_get_ld_map_info(struct megasas_instance *instance)
1238 {
1239         int ret = 0;
1240         struct megasas_cmd *cmd;
1241         struct megasas_dcmd_frame *dcmd;
1242         void *ci;
1243         dma_addr_t ci_h = 0;
1244         u32 size_map_info;
1245         struct fusion_context *fusion;
1246
1247         cmd = megasas_get_cmd(instance);
1248
1249         if (!cmd) {
1250                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1251                 return -ENOMEM;
1252         }
1253
1254         fusion = instance->ctrl_context;
1255
1256         if (!fusion) {
1257                 megasas_return_cmd(instance, cmd);
1258                 return -ENXIO;
1259         }
1260
1261         dcmd = &cmd->frame->dcmd;
1262
1263         size_map_info = fusion->current_map_sz;
1264
1265         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1266         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1267
1268         if (!ci) {
1269                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1270                 megasas_return_cmd(instance, cmd);
1271                 return -ENOMEM;
1272         }
1273
1274         memset(ci, 0, fusion->max_map_sz);
1275         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1276         dcmd->cmd = MFI_CMD_DCMD;
1277         dcmd->cmd_status = 0xFF;
1278         dcmd->sge_count = 1;
1279         dcmd->flags = MFI_FRAME_DIR_READ;
1280         dcmd->timeout = 0;
1281         dcmd->pad_0 = 0;
1282         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1283         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1284
1285         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1286
1287         if (!instance->mask_interrupts)
1288                 ret = megasas_issue_blocked_cmd(instance, cmd,
1289                         MFI_IO_TIMEOUT_SECS);
1290         else
1291                 ret = megasas_issue_polled(instance, cmd);
1292
1293         if (ret == DCMD_TIMEOUT)
1294                 megaraid_sas_kill_hba(instance);
1295
1296         megasas_return_cmd(instance, cmd);
1297
1298         return ret;
1299 }
1300
1301 u8
1302 megasas_get_map_info(struct megasas_instance *instance)
1303 {
1304         struct fusion_context *fusion = instance->ctrl_context;
1305
1306         fusion->fast_path_io = 0;
1307         if (!megasas_get_ld_map_info(instance)) {
1308                 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1309                         fusion->fast_path_io = 1;
1310                         return 0;
1311                 }
1312         }
1313         return 1;
1314 }
1315
1316 /*
1317  * megasas_sync_map_info -      Returns FW's ld_map structure
1318  * @instance:                           Adapter soft state
1319  *
1320  * Issues an internal command (DCMD) to get the FW's controller PD
1321  * list structure.  This information is mainly used to find out SYSTEM
1322  * supported by the FW.
1323  */
1324 int
1325 megasas_sync_map_info(struct megasas_instance *instance)
1326 {
1327         int i;
1328         struct megasas_cmd *cmd;
1329         struct megasas_dcmd_frame *dcmd;
1330         u16 num_lds;
1331         u32 size_sync_info;
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         size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
1361
1362         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1363
1364         ci = (struct MR_LD_TARGET_SYNC *)
1365           fusion->ld_map[(instance->map_id - 1) & 1];
1366         memset(ci, 0, fusion->max_map_sz);
1367
1368         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1369
1370         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1371
1372         for (i = 0; i < num_lds; i++, ld_sync++) {
1373                 raid = MR_LdRaidGet(i, map);
1374                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1375                 ld_sync->seqNum = raid->seqNum;
1376         }
1377
1378         size_map_info = fusion->current_map_sz;
1379
1380         dcmd->cmd = MFI_CMD_DCMD;
1381         dcmd->cmd_status = 0xFF;
1382         dcmd->sge_count = 1;
1383         dcmd->flags = MFI_FRAME_DIR_WRITE;
1384         dcmd->timeout = 0;
1385         dcmd->pad_0 = 0;
1386         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1387         dcmd->mbox.b[0] = num_lds;
1388         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1389         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1390
1391         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1392
1393         instance->map_update_cmd = cmd;
1394
1395         instance->instancet->issue_dcmd(instance, cmd);
1396
1397         return 0;
1398 }
1399
1400 /*
1401  * meagasas_display_intel_branding - Display branding string
1402  * @instance: per adapter object
1403  *
1404  * Return nothing.
1405  */
1406 static void
1407 megasas_display_intel_branding(struct megasas_instance *instance)
1408 {
1409         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1410                 return;
1411
1412         switch (instance->pdev->device) {
1413         case PCI_DEVICE_ID_LSI_INVADER:
1414                 switch (instance->pdev->subsystem_device) {
1415                 case MEGARAID_INTEL_RS3DC080_SSDID:
1416                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1417                                 instance->host->host_no,
1418                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1419                         break;
1420                 case MEGARAID_INTEL_RS3DC040_SSDID:
1421                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1422                                 instance->host->host_no,
1423                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1424                         break;
1425                 case MEGARAID_INTEL_RS3SC008_SSDID:
1426                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1427                                 instance->host->host_no,
1428                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1429                         break;
1430                 case MEGARAID_INTEL_RS3MC044_SSDID:
1431                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1432                                 instance->host->host_no,
1433                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1434                         break;
1435                 default:
1436                         break;
1437                 }
1438                 break;
1439         case PCI_DEVICE_ID_LSI_FURY:
1440                 switch (instance->pdev->subsystem_device) {
1441                 case MEGARAID_INTEL_RS3WC080_SSDID:
1442                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1443                                 instance->host->host_no,
1444                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1445                         break;
1446                 case MEGARAID_INTEL_RS3WC040_SSDID:
1447                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1448                                 instance->host->host_no,
1449                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1450                         break;
1451                 default:
1452                         break;
1453                 }
1454                 break;
1455         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1456         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1457                 switch (instance->pdev->subsystem_device) {
1458                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1459                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1460                                 instance->host->host_no,
1461                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1462                         break;
1463                 default:
1464                         break;
1465                 }
1466                 break;
1467         default:
1468                 break;
1469         }
1470 }
1471
1472 /**
1473  * megasas_allocate_raid_maps - Allocate memory for RAID maps
1474  * @instance:                           Adapter soft state
1475  *
1476  * return:                              if success: return 0
1477  *                                      failed:  return -ENOMEM
1478  */
1479 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1480 {
1481         struct fusion_context *fusion;
1482         int i = 0;
1483
1484         fusion = instance->ctrl_context;
1485
1486         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1487
1488         for (i = 0; i < 2; i++) {
1489                 fusion->ld_map[i] = NULL;
1490
1491                 fusion->ld_drv_map[i] = (void *)
1492                         __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1493                                          fusion->drv_map_pages);
1494
1495                 if (!fusion->ld_drv_map[i]) {
1496                         fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1497
1498                         if (!fusion->ld_drv_map[i]) {
1499                                 dev_err(&instance->pdev->dev,
1500                                         "Could not allocate memory for local map"
1501                                         " size requested: %d\n",
1502                                         fusion->drv_map_sz);
1503                                 goto ld_drv_map_alloc_fail;
1504                         }
1505                 }
1506         }
1507
1508         for (i = 0; i < 2; i++) {
1509                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1510                                                        fusion->max_map_sz,
1511                                                        &fusion->ld_map_phys[i],
1512                                                        GFP_KERNEL);
1513                 if (!fusion->ld_map[i]) {
1514                         dev_err(&instance->pdev->dev,
1515                                 "Could not allocate memory for map info %s:%d\n",
1516                                 __func__, __LINE__);
1517                         goto ld_map_alloc_fail;
1518                 }
1519         }
1520
1521         return 0;
1522
1523 ld_map_alloc_fail:
1524         for (i = 0; i < 2; i++) {
1525                 if (fusion->ld_map[i])
1526                         dma_free_coherent(&instance->pdev->dev,
1527                                           fusion->max_map_sz,
1528                                           fusion->ld_map[i],
1529                                           fusion->ld_map_phys[i]);
1530         }
1531
1532 ld_drv_map_alloc_fail:
1533         for (i = 0; i < 2; i++) {
1534                 if (fusion->ld_drv_map[i]) {
1535                         if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1536                                 vfree(fusion->ld_drv_map[i]);
1537                         else
1538                                 free_pages((ulong)fusion->ld_drv_map[i],
1539                                            fusion->drv_map_pages);
1540                 }
1541         }
1542
1543         return -ENOMEM;
1544 }
1545
1546 /**
1547  * megasas_configure_queue_sizes -      Calculate size of request desc queue,
1548  *                                      reply desc queue,
1549  *                                      IO request frame queue, set can_queue.
1550  * @instance:                           Adapter soft state
1551  * @return:                             void
1552  */
1553 static inline
1554 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1555 {
1556         struct fusion_context *fusion;
1557         u16 max_cmd;
1558
1559         fusion = instance->ctrl_context;
1560         max_cmd = instance->max_fw_cmds;
1561
1562         if (instance->adapter_type == VENTURA_SERIES)
1563                 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1564         else
1565                 instance->max_mpt_cmds = instance->max_fw_cmds;
1566
1567         instance->max_scsi_cmds = instance->max_fw_cmds -
1568                         (MEGASAS_FUSION_INTERNAL_CMDS +
1569                         MEGASAS_FUSION_IOCTL_CMDS);
1570         instance->cur_can_queue = instance->max_scsi_cmds;
1571         instance->host->can_queue = instance->cur_can_queue;
1572
1573         fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1574
1575         fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1576                                           instance->max_mpt_cmds;
1577         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1578                                         (fusion->reply_q_depth);
1579         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1580                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1581                  * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1582 }
1583
1584 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1585 {
1586         struct fusion_context *fusion;
1587         struct megasas_cmd *cmd;
1588
1589         fusion = instance->ctrl_context;
1590
1591         cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1592
1593         if (!cmd) {
1594                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1595                         __func__, __LINE__);
1596                 return -ENOMEM;
1597         }
1598
1599         cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1600                                         IOC_INIT_FRAME_SIZE,
1601                                         &cmd->frame_phys_addr, GFP_KERNEL);
1602
1603         if (!cmd->frame) {
1604                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1605                         __func__, __LINE__);
1606                 kfree(cmd);
1607                 return -ENOMEM;
1608         }
1609
1610         fusion->ioc_init_cmd = cmd;
1611         return 0;
1612 }
1613
1614 /**
1615  * megasas_free_ioc_init_cmd -  Free IOC INIT command frame
1616  * @instance:           Adapter soft state
1617  */
1618 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1619 {
1620         struct fusion_context *fusion;
1621
1622         fusion = instance->ctrl_context;
1623
1624         if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1625                 dma_free_coherent(&instance->pdev->dev,
1626                                   IOC_INIT_FRAME_SIZE,
1627                                   fusion->ioc_init_cmd->frame,
1628                                   fusion->ioc_init_cmd->frame_phys_addr);
1629
1630         if (fusion->ioc_init_cmd)
1631                 kfree(fusion->ioc_init_cmd);
1632 }
1633
1634 /**
1635  * megasas_init_adapter_fusion -        Initializes the FW
1636  * @instance:           Adapter soft state
1637  *
1638  * This is the main function for initializing firmware.
1639  */
1640 u32
1641 megasas_init_adapter_fusion(struct megasas_instance *instance)
1642 {
1643         struct megasas_register_set __iomem *reg_set;
1644         struct fusion_context *fusion;
1645         u32 scratch_pad_2;
1646         int i = 0, count;
1647
1648         fusion = instance->ctrl_context;
1649
1650         reg_set = instance->reg_set;
1651
1652         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1653
1654         /*
1655          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1656          */
1657         instance->max_mfi_cmds =
1658                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1659
1660         megasas_configure_queue_sizes(instance);
1661
1662         scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2);
1663         /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1664          * Firmware support extended IO chain frame which is 4 times more than
1665          * legacy Firmware.
1666          * Legacy Firmware - Frame size is (8 * 128) = 1K
1667          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1668          */
1669         if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1670                 instance->max_chain_frame_sz =
1671                         ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1672                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1673         else
1674                 instance->max_chain_frame_sz =
1675                         ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1676                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1677
1678         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1679                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1680                         instance->max_chain_frame_sz,
1681                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1682                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1683         }
1684
1685         fusion->max_sge_in_main_msg =
1686                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1687                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1688
1689         fusion->max_sge_in_chain =
1690                 instance->max_chain_frame_sz
1691                         / sizeof(union MPI2_SGE_IO_UNION);
1692
1693         instance->max_num_sge =
1694                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1695                         + fusion->max_sge_in_chain - 2);
1696
1697         /* Used for pass thru MFI frame (DCMD) */
1698         fusion->chain_offset_mfi_pthru =
1699                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1700
1701         fusion->chain_offset_io_request =
1702                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1703                  sizeof(union MPI2_SGE_IO_UNION))/16;
1704
1705         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1706         for (i = 0 ; i < count; i++)
1707                 fusion->last_reply_idx[i] = 0;
1708
1709         /*
1710          * For fusion adapters, 3 commands for IOCTL and 8 commands
1711          * for driver's internal DCMDs.
1712          */
1713         instance->max_scsi_cmds = instance->max_fw_cmds -
1714                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1715                                 MEGASAS_FUSION_IOCTL_CMDS);
1716         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1717
1718         if (megasas_alloc_ioc_init_frame(instance))
1719                 return 1;
1720
1721         /*
1722          * Allocate memory for descriptors
1723          * Create a pool of commands
1724          */
1725         if (megasas_alloc_cmds(instance))
1726                 goto fail_alloc_mfi_cmds;
1727         if (megasas_alloc_cmds_fusion(instance))
1728                 goto fail_alloc_cmds;
1729
1730         if (megasas_ioc_init_fusion(instance))
1731                 goto fail_ioc_init;
1732
1733         megasas_display_intel_branding(instance);
1734         if (megasas_get_ctrl_info(instance)) {
1735                 dev_err(&instance->pdev->dev,
1736                         "Could not get controller info. Fail from %s %d\n",
1737                         __func__, __LINE__);
1738                 goto fail_ioc_init;
1739         }
1740
1741         instance->flag_ieee = 1;
1742         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1743         fusion->fast_path_io = 0;
1744
1745         if (megasas_allocate_raid_maps(instance))
1746                 goto fail_ioc_init;
1747
1748         if (!megasas_get_map_info(instance))
1749                 megasas_sync_map_info(instance);
1750
1751         return 0;
1752
1753 fail_ioc_init:
1754         megasas_free_cmds_fusion(instance);
1755 fail_alloc_cmds:
1756         megasas_free_cmds(instance);
1757 fail_alloc_mfi_cmds:
1758         megasas_free_ioc_init_cmd(instance);
1759         return 1;
1760 }
1761
1762 /**
1763  * map_cmd_status -     Maps FW cmd status to OS cmd status
1764  * @cmd :               Pointer to cmd
1765  * @status :            status of cmd returned by FW
1766  * @ext_status :        ext status of cmd returned by FW
1767  */
1768
1769 void
1770 map_cmd_status(struct fusion_context *fusion,
1771                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1772                 u32 data_length, u8 *sense)
1773 {
1774         u8 cmd_type;
1775         int resid;
1776
1777         cmd_type = megasas_cmd_type(scmd);
1778         switch (status) {
1779
1780         case MFI_STAT_OK:
1781                 scmd->result = DID_OK << 16;
1782                 break;
1783
1784         case MFI_STAT_SCSI_IO_FAILED:
1785         case MFI_STAT_LD_INIT_IN_PROGRESS:
1786                 scmd->result = (DID_ERROR << 16) | ext_status;
1787                 break;
1788
1789         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1790
1791                 scmd->result = (DID_OK << 16) | ext_status;
1792                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1793                         memset(scmd->sense_buffer, 0,
1794                                SCSI_SENSE_BUFFERSIZE);
1795                         memcpy(scmd->sense_buffer, sense,
1796                                SCSI_SENSE_BUFFERSIZE);
1797                         scmd->result |= DRIVER_SENSE << 24;
1798                 }
1799
1800                 /*
1801                  * If the  IO request is partially completed, then MR FW will
1802                  * update "io_request->DataLength" field with actual number of
1803                  * bytes transferred.Driver will set residual bytes count in
1804                  * SCSI command structure.
1805                  */
1806                 resid = (scsi_bufflen(scmd) - data_length);
1807                 scsi_set_resid(scmd, resid);
1808
1809                 if (resid &&
1810                         ((cmd_type == READ_WRITE_LDIO) ||
1811                         (cmd_type == READ_WRITE_SYSPDIO)))
1812                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
1813                                 " requested/completed 0x%x/0x%x\n",
1814                                 status, scsi_bufflen(scmd), data_length);
1815                 break;
1816
1817         case MFI_STAT_LD_OFFLINE:
1818         case MFI_STAT_DEVICE_NOT_FOUND:
1819                 scmd->result = DID_BAD_TARGET << 16;
1820                 break;
1821         case MFI_STAT_CONFIG_SEQ_MISMATCH:
1822                 scmd->result = DID_IMM_RETRY << 16;
1823                 break;
1824         default:
1825                 scmd->result = DID_ERROR << 16;
1826                 break;
1827         }
1828 }
1829
1830 /**
1831  * megasas_is_prp_possible -
1832  * Checks if native NVMe PRPs can be built for the IO
1833  *
1834  * @instance:           Adapter soft state
1835  * @scmd:               SCSI command from the mid-layer
1836  * @sge_count:          scatter gather element count.
1837  *
1838  * Returns:             true: PRPs can be built
1839  *                      false: IEEE SGLs needs to be built
1840  */
1841 static bool
1842 megasas_is_prp_possible(struct megasas_instance *instance,
1843                         struct scsi_cmnd *scmd, int sge_count)
1844 {
1845         struct fusion_context *fusion;
1846         int i;
1847         u32 data_length = 0;
1848         struct scatterlist *sg_scmd;
1849         bool build_prp = false;
1850         u32 mr_nvme_pg_size;
1851
1852         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1853                                 MR_DEFAULT_NVME_PAGE_SIZE);
1854         fusion = instance->ctrl_context;
1855         data_length = scsi_bufflen(scmd);
1856         sg_scmd = scsi_sglist(scmd);
1857
1858         /*
1859          * NVMe uses one PRP for each page (or part of a page)
1860          * look at the data length - if 4 pages or less then IEEE is OK
1861          * if  > 5 pages then we need to build a native SGL
1862          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
1863          * if this first size in the page is >= the residual beyond 4 pages
1864          * then use IEEE, otherwise use native SGL
1865          */
1866
1867         if (data_length > (mr_nvme_pg_size * 5)) {
1868                 build_prp = true;
1869         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
1870                         (data_length <= (mr_nvme_pg_size * 5)))  {
1871                 /* check if 1st SG entry size is < residual beyond 4 pages */
1872                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
1873                         build_prp = true;
1874         }
1875
1876 /*
1877  * Below code detects gaps/holes in IO data buffers.
1878  * What does holes/gaps mean?
1879  * Any SGE except first one in a SGL starts at non NVME page size
1880  * aligned address OR Any SGE except last one in a SGL ends at
1881  * non NVME page size boundary.
1882  *
1883  * Driver has already informed block layer by setting boundary rules for
1884  * bio merging done at NVME page size boundary calling kernel API
1885  * blk_queue_virt_boundary inside slave_config.
1886  * Still there is possibility of IO coming with holes to driver because of
1887  * IO merging done by IO scheduler.
1888  *
1889  * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
1890  * IO scheduling so no IO merging.
1891  *
1892  * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
1893  * then sending IOs with holes.
1894  *
1895  * Though driver can request block layer to disable IO merging by calling-
1896  * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
1897  * user may tune sysfs parameter- nomerges again to 0 or 1.
1898  *
1899  * If in future IO scheduling is enabled with SCSI BLK MQ,
1900  * this algorithm to detect holes will be required in driver
1901  * for SCSI BLK MQ enabled case as well.
1902  *
1903  *
1904  */
1905         scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
1906                 if ((i != 0) && (i != (sge_count - 1))) {
1907                         if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
1908                             mega_mod64(sg_dma_address(sg_scmd),
1909                                        mr_nvme_pg_size)) {
1910                                 build_prp = false;
1911                                 atomic_inc(&instance->sge_holes_type1);
1912                                 break;
1913                         }
1914                 }
1915
1916                 if ((sge_count > 1) && (i == 0)) {
1917                         if ((mega_mod64((sg_dma_address(sg_scmd) +
1918                                         sg_dma_len(sg_scmd)),
1919                                         mr_nvme_pg_size))) {
1920                                 build_prp = false;
1921                                 atomic_inc(&instance->sge_holes_type2);
1922                                 break;
1923                         }
1924                 }
1925
1926                 if ((sge_count > 1) && (i == (sge_count - 1))) {
1927                         if (mega_mod64(sg_dma_address(sg_scmd),
1928                                        mr_nvme_pg_size)) {
1929                                 build_prp = false;
1930                                 atomic_inc(&instance->sge_holes_type3);
1931                                 break;
1932                         }
1933                 }
1934         }
1935
1936         return build_prp;
1937 }
1938
1939 /**
1940  * megasas_make_prp_nvme -
1941  * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
1942  *
1943  * @instance:           Adapter soft state
1944  * @scmd:               SCSI command from the mid-layer
1945  * @sgl_ptr:            SGL to be filled in
1946  * @cmd:                Fusion command frame
1947  * @sge_count:          scatter gather element count.
1948  *
1949  * Returns:             true: PRPs are built
1950  *                      false: IEEE SGLs needs to be built
1951  */
1952 static bool
1953 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
1954                       struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1955                       struct megasas_cmd_fusion *cmd, int sge_count)
1956 {
1957         int sge_len, offset, num_prp_in_chain = 0;
1958         struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
1959         u64 *ptr_sgl;
1960         dma_addr_t ptr_sgl_phys;
1961         u64 sge_addr;
1962         u32 page_mask, page_mask_result;
1963         struct scatterlist *sg_scmd;
1964         u32 first_prp_len;
1965         bool build_prp = false;
1966         int data_len = scsi_bufflen(scmd);
1967         struct fusion_context *fusion;
1968         u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1969                                         MR_DEFAULT_NVME_PAGE_SIZE);
1970
1971         fusion = instance->ctrl_context;
1972
1973         build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
1974
1975         if (!build_prp)
1976                 return false;
1977
1978         /*
1979          * Nvme has a very convoluted prp format.  One prp is required
1980          * for each page or partial page. Driver need to split up OS sg_list
1981          * entries if it is longer than one page or cross a page
1982          * boundary.  Driver also have to insert a PRP list pointer entry as
1983          * the last entry in each physical page of the PRP list.
1984          *
1985          * NOTE: The first PRP "entry" is actually placed in the first
1986          * SGL entry in the main message as IEEE 64 format.  The 2nd
1987          * entry in the main message is the chain element, and the rest
1988          * of the PRP entries are built in the contiguous pcie buffer.
1989          */
1990         page_mask = mr_nvme_pg_size - 1;
1991         ptr_sgl = (u64 *)cmd->sg_frame;
1992         ptr_sgl_phys = cmd->sg_frame_phys_addr;
1993         memset(ptr_sgl, 0, instance->max_chain_frame_sz);
1994
1995         /* Build chain frame element which holds all prps except first*/
1996         main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
1997             ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
1998
1999         main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2000         main_chain_element->NextChainOffset = 0;
2001         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2002                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
2003                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2004
2005         /* Build first prp, sge need not to be page aligned*/
2006         ptr_first_sgl = sgl_ptr;
2007         sg_scmd = scsi_sglist(scmd);
2008         sge_addr = sg_dma_address(sg_scmd);
2009         sge_len = sg_dma_len(sg_scmd);
2010
2011         offset = (u32)(sge_addr & page_mask);
2012         first_prp_len = mr_nvme_pg_size - offset;
2013
2014         ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2015         ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2016
2017         data_len -= first_prp_len;
2018
2019         if (sge_len > first_prp_len) {
2020                 sge_addr += first_prp_len;
2021                 sge_len -= first_prp_len;
2022         } else if (sge_len == first_prp_len) {
2023                 sg_scmd = sg_next(sg_scmd);
2024                 sge_addr = sg_dma_address(sg_scmd);
2025                 sge_len = sg_dma_len(sg_scmd);
2026         }
2027
2028         for (;;) {
2029                 offset = (u32)(sge_addr & page_mask);
2030
2031                 /* Put PRP pointer due to page boundary*/
2032                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2033                 if (unlikely(!page_mask_result)) {
2034                         scmd_printk(KERN_NOTICE,
2035                                     scmd, "page boundary ptr_sgl: 0x%p\n",
2036                                     ptr_sgl);
2037                         ptr_sgl_phys += 8;
2038                         *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2039                         ptr_sgl++;
2040                         num_prp_in_chain++;
2041                 }
2042
2043                 *ptr_sgl = cpu_to_le64(sge_addr);
2044                 ptr_sgl++;
2045                 ptr_sgl_phys += 8;
2046                 num_prp_in_chain++;
2047
2048                 sge_addr += mr_nvme_pg_size;
2049                 sge_len -= mr_nvme_pg_size;
2050                 data_len -= mr_nvme_pg_size;
2051
2052                 if (data_len <= 0)
2053                         break;
2054
2055                 if (sge_len > 0)
2056                         continue;
2057
2058                 sg_scmd = sg_next(sg_scmd);
2059                 sge_addr = sg_dma_address(sg_scmd);
2060                 sge_len = sg_dma_len(sg_scmd);
2061         }
2062
2063         main_chain_element->Length =
2064                         cpu_to_le32(num_prp_in_chain * sizeof(u64));
2065
2066         atomic_inc(&instance->prp_sgl);
2067         return build_prp;
2068 }
2069
2070 /**
2071  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
2072  * @instance:           Adapter soft state
2073  * @scp:                SCSI command from the mid-layer
2074  * @sgl_ptr:            SGL to be filled in
2075  * @cmd:                cmd we are working on
2076  * @sge_count           sge count
2077  *
2078  */
2079 static void
2080 megasas_make_sgl_fusion(struct megasas_instance *instance,
2081                         struct scsi_cmnd *scp,
2082                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2083                         struct megasas_cmd_fusion *cmd, int sge_count)
2084 {
2085         int i, sg_processed;
2086         struct scatterlist *os_sgl;
2087         struct fusion_context *fusion;
2088
2089         fusion = instance->ctrl_context;
2090
2091         if (instance->adapter_type >= INVADER_SERIES) {
2092                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2093                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2094                 sgl_ptr_end->Flags = 0;
2095         }
2096
2097         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2098                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2099                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2100                 sgl_ptr->Flags = 0;
2101                 if (instance->adapter_type >= INVADER_SERIES)
2102                         if (i == sge_count - 1)
2103                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2104                 sgl_ptr++;
2105                 sg_processed = i + 1;
2106
2107                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
2108                     (sge_count > fusion->max_sge_in_main_msg)) {
2109
2110                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2111                         if (instance->adapter_type >= INVADER_SERIES) {
2112                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2113                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2114                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2115                                         cmd->io_request->ChainOffset =
2116                                                 fusion->
2117                                                 chain_offset_io_request;
2118                                 else
2119                                         cmd->io_request->ChainOffset = 0;
2120                         } else
2121                                 cmd->io_request->ChainOffset =
2122                                         fusion->chain_offset_io_request;
2123
2124                         sg_chain = sgl_ptr;
2125                         /* Prepare chain element */
2126                         sg_chain->NextChainOffset = 0;
2127                         if (instance->adapter_type >= INVADER_SERIES)
2128                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2129                         else
2130                                 sg_chain->Flags =
2131                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2132                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2133                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2134                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2135
2136                         sgl_ptr =
2137                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2138                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2139                 }
2140         }
2141         atomic_inc(&instance->ieee_sgl);
2142 }
2143
2144 /**
2145  * megasas_make_sgl -   Build Scatter Gather List(SGLs)
2146  * @scp:                SCSI command pointer
2147  * @instance:           Soft instance of controller
2148  * @cmd:                Fusion command pointer
2149  *
2150  * This function will build sgls based on device type.
2151  * For nvme drives, there is different way of building sgls in nvme native
2152  * format- PRPs(Physical Region Page).
2153  *
2154  * Returns the number of sg lists actually used, zero if the sg lists
2155  * is NULL, or -ENOMEM if the mapping failed
2156  */
2157 static
2158 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2159                      struct megasas_cmd_fusion *cmd)
2160 {
2161         int sge_count;
2162         bool build_prp = false;
2163         struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2164
2165         sge_count = scsi_dma_map(scp);
2166
2167         if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2168                 return sge_count;
2169
2170         sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2171         if ((le16_to_cpu(cmd->io_request->IoFlags) &
2172             MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2173             (cmd->pd_interface == NVME_PD))
2174                 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2175                                                   cmd, sge_count);
2176
2177         if (!build_prp)
2178                 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2179                                         cmd, sge_count);
2180
2181         return sge_count;
2182 }
2183
2184 /**
2185  * megasas_set_pd_lba - Sets PD LBA
2186  * @cdb:                CDB
2187  * @cdb_len:            cdb length
2188  * @start_blk:          Start block of IO
2189  *
2190  * Used to set the PD LBA in CDB for FP IOs
2191  */
2192 void
2193 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2194                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2195                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2196 {
2197         struct MR_LD_RAID *raid;
2198         u16 ld;
2199         u64 start_blk = io_info->pdBlock;
2200         u8 *cdb = io_request->CDB.CDB32;
2201         u32 num_blocks = io_info->numBlocks;
2202         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2203
2204         /* Check if T10 PI (DIF) is enabled for this LD */
2205         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2206         raid = MR_LdRaidGet(ld, local_map_ptr);
2207         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2208                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2209                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2210                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
2211
2212                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2213                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2214                 else
2215                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2216                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2217
2218                 /* LBA */
2219                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2220                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2221                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2222                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2223                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2224                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2225                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2226                 cdb[19] = (u8)(start_blk & 0xff);
2227
2228                 /* Logical block reference tag */
2229                 io_request->CDB.EEDP32.PrimaryReferenceTag =
2230                         cpu_to_be32(ref_tag);
2231                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2232                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2233
2234                 /* Transfer length */
2235                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2236                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2237                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2238                 cdb[31] = (u8)(num_blocks & 0xff);
2239
2240                 /* set SCSI IO EEDPFlags */
2241                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
2242                         io_request->EEDPFlags = cpu_to_le16(
2243                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
2244                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2245                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2246                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2247                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2248                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2249                 } else {
2250                         io_request->EEDPFlags = cpu_to_le16(
2251                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2252                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2253                 }
2254                 io_request->Control |= cpu_to_le32((0x4 << 26));
2255                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2256         } else {
2257                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2258                 if (((cdb_len == 12) || (cdb_len == 16)) &&
2259                     (start_blk <= 0xffffffff)) {
2260                         if (cdb_len == 16) {
2261                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2262                                 flagvals = cdb[1];
2263                                 groupnum = cdb[14];
2264                                 control = cdb[15];
2265                         } else {
2266                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2267                                 flagvals = cdb[1];
2268                                 groupnum = cdb[10];
2269                                 control = cdb[11];
2270                         }
2271
2272                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2273
2274                         cdb[0] = opcode;
2275                         cdb[1] = flagvals;
2276                         cdb[6] = groupnum;
2277                         cdb[9] = control;
2278
2279                         /* Transfer length */
2280                         cdb[8] = (u8)(num_blocks & 0xff);
2281                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2282
2283                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2284                         cdb_len = 10;
2285                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2286                         /* Convert to 16 byte CDB for large LBA's */
2287                         switch (cdb_len) {
2288                         case 6:
2289                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2290                                 control = cdb[5];
2291                                 break;
2292                         case 10:
2293                                 opcode =
2294                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
2295                                 flagvals = cdb[1];
2296                                 groupnum = cdb[6];
2297                                 control = cdb[9];
2298                                 break;
2299                         case 12:
2300                                 opcode =
2301                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
2302                                 flagvals = cdb[1];
2303                                 groupnum = cdb[10];
2304                                 control = cdb[11];
2305                                 break;
2306                         }
2307
2308                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2309
2310                         cdb[0] = opcode;
2311                         cdb[1] = flagvals;
2312                         cdb[14] = groupnum;
2313                         cdb[15] = control;
2314
2315                         /* Transfer length */
2316                         cdb[13] = (u8)(num_blocks & 0xff);
2317                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2318                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2319                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2320
2321                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2322                         cdb_len = 16;
2323                 }
2324
2325                 /* Normal case, just load LBA here */
2326                 switch (cdb_len) {
2327                 case 6:
2328                 {
2329                         u8 val = cdb[1] & 0xE0;
2330                         cdb[3] = (u8)(start_blk & 0xff);
2331                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
2332                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2333                         break;
2334                 }
2335                 case 10:
2336                         cdb[5] = (u8)(start_blk & 0xff);
2337                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2338                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2339                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2340                         break;
2341                 case 12:
2342                         cdb[5]    = (u8)(start_blk & 0xff);
2343                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2344                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2345                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2346                         break;
2347                 case 16:
2348                         cdb[9]    = (u8)(start_blk & 0xff);
2349                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2350                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2351                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2352                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2353                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2354                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2355                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2356                         break;
2357                 }
2358         }
2359 }
2360
2361 /**
2362  * megasas_stream_detect -      stream detection on read and and write IOs
2363  * @instance:           Adapter soft state
2364  * @cmd:                    Command to be prepared
2365  * @io_info:            IO Request info
2366  *
2367  */
2368
2369 /** stream detection on read and and write IOs */
2370 static void megasas_stream_detect(struct megasas_instance *instance,
2371                                   struct megasas_cmd_fusion *cmd,
2372                                   struct IO_REQUEST_INFO *io_info)
2373 {
2374         struct fusion_context *fusion = instance->ctrl_context;
2375         u32 device_id = io_info->ldTgtId;
2376         struct LD_STREAM_DETECT *current_ld_sd
2377                 = fusion->stream_detect_by_ld[device_id];
2378         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2379         u32 shifted_values, unshifted_values;
2380         u32 index_value_mask, shifted_values_mask;
2381         int i;
2382         bool is_read_ahead = false;
2383         struct STREAM_DETECT *current_sd;
2384         /* find possible stream */
2385         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2386                 stream_num = (*track_stream >>
2387                         (i * BITS_PER_INDEX_STREAM)) &
2388                         STREAM_MASK;
2389                 current_sd = &current_ld_sd->stream_track[stream_num];
2390                 /* if we found a stream, update the raid
2391                  *  context and also update the mruBitMap
2392                  */
2393                 /*      boundary condition */
2394                 if ((current_sd->next_seq_lba) &&
2395                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2396                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2397                     (current_sd->is_read == io_info->isRead)) {
2398
2399                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2400                             ((!io_info->isRead) || (!is_read_ahead)))
2401                                 /*
2402                                  * Once the API availible we need to change this.
2403                                  * At this point we are not allowing any gap
2404                                  */
2405                                 continue;
2406
2407                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2408                         current_sd->next_seq_lba =
2409                         io_info->ldStartBlock + io_info->numBlocks;
2410                         /*
2411                          *      update the mruBitMap LRU
2412                          */
2413                         shifted_values_mask =
2414                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2415                         shifted_values = ((*track_stream & shifted_values_mask)
2416                                                 << BITS_PER_INDEX_STREAM);
2417                         index_value_mask =
2418                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2419                         unshifted_values =
2420                                 *track_stream & ~(shifted_values_mask |
2421                                 index_value_mask);
2422                         *track_stream =
2423                                 unshifted_values | shifted_values | stream_num;
2424                         return;
2425                 }
2426         }
2427         /*
2428          * if we did not find any stream, create a new one
2429          * from the least recently used
2430          */
2431         stream_num = (*track_stream >>
2432                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2433                 STREAM_MASK;
2434         current_sd = &current_ld_sd->stream_track[stream_num];
2435         current_sd->is_read = io_info->isRead;
2436         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2437         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2438         return;
2439 }
2440
2441 /**
2442  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2443  * affinity (cpu of the controller) and raid_flags in the raid context
2444  * based on IO type.
2445  *
2446  * @praid_context:      IO RAID context
2447  * @raid:               LD raid map
2448  * @fp_possible:        Is fast path possible?
2449  * @is_read:            Is read IO?
2450  *
2451  */
2452 static void
2453 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
2454                                   struct MR_LD_RAID *raid, bool fp_possible,
2455                                   u8 is_read, u32 scsi_buff_len)
2456 {
2457         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2458         struct RAID_CONTEXT_G35 *rctx_g35;
2459
2460         rctx_g35 = &praid_context->raid_context_g35;
2461         if (fp_possible) {
2462                 if (is_read) {
2463                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2464                             (raid->cpuAffinity.pdRead.cpu1))
2465                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2466                         else if (raid->cpuAffinity.pdRead.cpu1)
2467                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2468                 } else {
2469                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2470                             (raid->cpuAffinity.pdWrite.cpu1))
2471                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2472                         else if (raid->cpuAffinity.pdWrite.cpu1)
2473                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2474                         /* Fast path cache by pass capable R0/R1 VD */
2475                         if ((raid->level <= 1) &&
2476                             (raid->capability.fp_cache_bypass_capable)) {
2477                                 rctx_g35->routing_flags |=
2478                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2479                                 rctx_g35->raid_flags =
2480                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2481                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2482                         }
2483                 }
2484         } else {
2485                 if (is_read) {
2486                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2487                             (raid->cpuAffinity.ldRead.cpu1))
2488                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2489                         else if (raid->cpuAffinity.ldRead.cpu1)
2490                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2491                 } else {
2492                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2493                             (raid->cpuAffinity.ldWrite.cpu1))
2494                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2495                         else if (raid->cpuAffinity.ldWrite.cpu1)
2496                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2497
2498                         if (is_stream_detected(rctx_g35) &&
2499                             ((raid->level == 5) || (raid->level == 6)) &&
2500                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2501                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2502                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2503                 }
2504         }
2505
2506         rctx_g35->routing_flags |=
2507                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2508
2509         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2510          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2511          * IO Subtype is not bitmap.
2512          */
2513         if ((raid->level == 1) && (!is_read)) {
2514                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2515                         praid_context->raid_context_g35.raid_flags =
2516                                 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2517                                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2518         }
2519 }
2520
2521 /**
2522  * megasas_build_ldio_fusion -  Prepares IOs to devices
2523  * @instance:           Adapter soft state
2524  * @scp:                SCSI command
2525  * @cmd:                Command to be prepared
2526  *
2527  * Prepares the io_request and chain elements (sg_frame) for IO
2528  * The IO can be for PD (Fast Path) or LD
2529  */
2530 void
2531 megasas_build_ldio_fusion(struct megasas_instance *instance,
2532                           struct scsi_cmnd *scp,
2533                           struct megasas_cmd_fusion *cmd)
2534 {
2535         bool fp_possible;
2536         u16 ld;
2537         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2538         u32 scsi_buff_len;
2539         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2540         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2541         struct IO_REQUEST_INFO io_info;
2542         struct fusion_context *fusion;
2543         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2544         u8 *raidLUN;
2545         unsigned long spinlock_flags;
2546         union RAID_CONTEXT_UNION *praid_context;
2547         struct MR_LD_RAID *raid = NULL;
2548         struct MR_PRIV_DEVICE *mrdev_priv;
2549
2550         device_id = MEGASAS_DEV_INDEX(scp);
2551
2552         fusion = instance->ctrl_context;
2553
2554         io_request = cmd->io_request;
2555         io_request->RaidContext.raid_context.virtual_disk_tgt_id =
2556                 cpu_to_le16(device_id);
2557         io_request->RaidContext.raid_context.status = 0;
2558         io_request->RaidContext.raid_context.ex_status = 0;
2559
2560         req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2561
2562         start_lba_lo = 0;
2563         start_lba_hi = 0;
2564         fp_possible = false;
2565
2566         /*
2567          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2568          */
2569         if (scp->cmd_len == 6) {
2570                 datalength = (u32) scp->cmnd[4];
2571                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2572                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2573
2574                 start_lba_lo &= 0x1FFFFF;
2575         }
2576
2577         /*
2578          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2579          */
2580         else if (scp->cmd_len == 10) {
2581                 datalength = (u32) scp->cmnd[8] |
2582                         ((u32) scp->cmnd[7] << 8);
2583                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2584                         ((u32) scp->cmnd[3] << 16) |
2585                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2586         }
2587
2588         /*
2589          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2590          */
2591         else if (scp->cmd_len == 12) {
2592                 datalength = ((u32) scp->cmnd[6] << 24) |
2593                         ((u32) scp->cmnd[7] << 16) |
2594                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2595                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2596                         ((u32) scp->cmnd[3] << 16) |
2597                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2598         }
2599
2600         /*
2601          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2602          */
2603         else if (scp->cmd_len == 16) {
2604                 datalength = ((u32) scp->cmnd[10] << 24) |
2605                         ((u32) scp->cmnd[11] << 16) |
2606                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2607                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2608                         ((u32) scp->cmnd[7] << 16) |
2609                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2610
2611                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2612                         ((u32) scp->cmnd[3] << 16) |
2613                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2614         }
2615
2616         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2617         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2618         io_info.numBlocks = datalength;
2619         io_info.ldTgtId = device_id;
2620         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2621         scsi_buff_len = scsi_bufflen(scp);
2622         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2623
2624         if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2625                 io_info.isRead = 1;
2626
2627         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2628         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2629
2630         if (ld < instance->fw_supported_vd_count)
2631                 raid = MR_LdRaidGet(ld, local_map_ptr);
2632
2633         if (!raid || (!fusion->fast_path_io)) {
2634                 io_request->RaidContext.raid_context.reg_lock_flags  = 0;
2635                 fp_possible = false;
2636         } else {
2637                 if (MR_BuildRaidContext(instance, &io_info,
2638                                         &io_request->RaidContext.raid_context,
2639                                         local_map_ptr, &raidLUN))
2640                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2641         }
2642
2643         cmd->request_desc->SCSIIO.MSIxIndex =
2644                 instance->reply_map[raw_smp_processor_id()];
2645
2646         praid_context = &io_request->RaidContext;
2647
2648         if (instance->adapter_type == VENTURA_SERIES) {
2649                 /* FP for Optimal raid level 1.
2650                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2651                  * are built by the driver as LD I/Os.
2652                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2653                  * (there is never a reason to process these as buffered writes)
2654                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2655                  * with the SLD bit asserted.
2656                  */
2657                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2658                         mrdev_priv = scp->device->hostdata;
2659
2660                         if (atomic_inc_return(&instance->fw_outstanding) >
2661                                 (instance->host->can_queue)) {
2662                                 fp_possible = false;
2663                                 atomic_dec(&instance->fw_outstanding);
2664                         } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2665                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) {
2666                                 fp_possible = false;
2667                                 atomic_dec(&instance->fw_outstanding);
2668                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2669                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2670                                                    instance->r1_ldio_hint_default);
2671                         }
2672                 }
2673
2674                 if (!fp_possible ||
2675                     (io_info.isRead && io_info.ra_capable)) {
2676                         spin_lock_irqsave(&instance->stream_lock,
2677                                           spinlock_flags);
2678                         megasas_stream_detect(instance, cmd, &io_info);
2679                         spin_unlock_irqrestore(&instance->stream_lock,
2680                                                spinlock_flags);
2681                         /* In ventura if stream detected for a read and it is
2682                          * read ahead capable make this IO as LDIO
2683                          */
2684                         if (is_stream_detected(&io_request->RaidContext.raid_context_g35))
2685                                 fp_possible = false;
2686                 }
2687
2688                 /* If raid is NULL, set CPU affinity to default CPU0 */
2689                 if (raid)
2690                         megasas_set_raidflag_cpu_affinity(praid_context,
2691                                 raid, fp_possible, io_info.isRead,
2692                                 scsi_buff_len);
2693                 else
2694                         praid_context->raid_context_g35.routing_flags |=
2695                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2696         }
2697
2698         if (fp_possible) {
2699                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2700                                    local_map_ptr, start_lba_lo);
2701                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2702                 cmd->request_desc->SCSIIO.RequestFlags =
2703                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2704                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2705                 if (instance->adapter_type == INVADER_SERIES) {
2706                         if (io_request->RaidContext.raid_context.reg_lock_flags ==
2707                             REGION_TYPE_UNUSED)
2708                                 cmd->request_desc->SCSIIO.RequestFlags =
2709                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2710                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2711                         io_request->RaidContext.raid_context.type
2712                                 = MPI2_TYPE_CUDA;
2713                         io_request->RaidContext.raid_context.nseg = 0x1;
2714                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2715                         io_request->RaidContext.raid_context.reg_lock_flags |=
2716                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2717                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2718                 } else if (instance->adapter_type == VENTURA_SERIES) {
2719                         io_request->RaidContext.raid_context_g35.nseg_type |=
2720                                                 (1 << RAID_CONTEXT_NSEG_SHIFT);
2721                         io_request->RaidContext.raid_context_g35.nseg_type |=
2722                                                 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2723                         io_request->RaidContext.raid_context_g35.routing_flags |=
2724                                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2725                         io_request->IoFlags |=
2726                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2727                 }
2728                 if (fusion->load_balance_info &&
2729                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2730                         (io_info.isRead)) {
2731                         io_info.devHandle =
2732                                 get_updated_dev_handle(instance,
2733                                         &fusion->load_balance_info[device_id],
2734                                         &io_info, local_map_ptr);
2735                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2736                         cmd->pd_r1_lb = io_info.pd_after_lb;
2737                         if (instance->adapter_type == VENTURA_SERIES)
2738                                 io_request->RaidContext.raid_context_g35.span_arm
2739                                         = io_info.span_arm;
2740                         else
2741                                 io_request->RaidContext.raid_context.span_arm
2742                                         = io_info.span_arm;
2743
2744                 } else
2745                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2746
2747                 if (instance->adapter_type == VENTURA_SERIES)
2748                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2749                 else
2750                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2751
2752                 if ((raidLUN[0] == 1) &&
2753                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2754                         instance->dev_handle = !(instance->dev_handle);
2755                         io_info.devHandle =
2756                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2757                 }
2758
2759                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2760                 io_request->DevHandle = io_info.devHandle;
2761                 cmd->pd_interface = io_info.pd_interface;
2762                 /* populate the LUN field */
2763                 memcpy(io_request->LUN, raidLUN, 8);
2764         } else {
2765                 io_request->RaidContext.raid_context.timeout_value =
2766                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2767                 cmd->request_desc->SCSIIO.RequestFlags =
2768                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2769                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2770                 if (instance->adapter_type == INVADER_SERIES) {
2771                         if (io_info.do_fp_rlbypass ||
2772                         (io_request->RaidContext.raid_context.reg_lock_flags
2773                                         == REGION_TYPE_UNUSED))
2774                                 cmd->request_desc->SCSIIO.RequestFlags =
2775                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2776                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2777                         io_request->RaidContext.raid_context.type
2778                                 = MPI2_TYPE_CUDA;
2779                         io_request->RaidContext.raid_context.reg_lock_flags |=
2780                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2781                                  MR_RL_FLAGS_SEQ_NUM_ENABLE);
2782                         io_request->RaidContext.raid_context.nseg = 0x1;
2783                 } else if (instance->adapter_type == VENTURA_SERIES) {
2784                         io_request->RaidContext.raid_context_g35.routing_flags |=
2785                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2786                         io_request->RaidContext.raid_context_g35.nseg_type |=
2787                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
2788                         io_request->RaidContext.raid_context_g35.nseg_type |=
2789                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2790                 }
2791                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2792                 io_request->DevHandle = cpu_to_le16(device_id);
2793
2794         } /* Not FP */
2795 }
2796
2797 /**
2798  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2799  * @instance:           Adapter soft state
2800  * @scp:                SCSI command
2801  * @cmd:                Command to be prepared
2802  *
2803  * Prepares the io_request frame for non-rw io cmds for vd.
2804  */
2805 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2806                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2807 {
2808         u32 device_id;
2809         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2810         u16 ld;
2811         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2812         struct fusion_context *fusion = instance->ctrl_context;
2813         u8                          span, physArm;
2814         __le16                      devHandle;
2815         u32                         arRef, pd;
2816         struct MR_LD_RAID                  *raid;
2817         struct RAID_CONTEXT                *pRAID_Context;
2818         u8 fp_possible = 1;
2819
2820         io_request = cmd->io_request;
2821         device_id = MEGASAS_DEV_INDEX(scmd);
2822         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2823         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2824         /* get RAID_Context pointer */
2825         pRAID_Context = &io_request->RaidContext.raid_context;
2826         /* Check with FW team */
2827         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2828         pRAID_Context->reg_lock_row_lba    = 0;
2829         pRAID_Context->reg_lock_length    = 0;
2830
2831         if (fusion->fast_path_io && (
2832                 device_id < instance->fw_supported_vd_count)) {
2833
2834                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2835                 if (ld >= instance->fw_supported_vd_count)
2836                         fp_possible = 0;
2837                 else {
2838                         raid = MR_LdRaidGet(ld, local_map_ptr);
2839                         if (!(raid->capability.fpNonRWCapable))
2840                                 fp_possible = 0;
2841                 }
2842         } else
2843                 fp_possible = 0;
2844
2845         if (!fp_possible) {
2846                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2847                 io_request->DevHandle = cpu_to_le16(device_id);
2848                 io_request->LUN[1] = scmd->device->lun;
2849                 pRAID_Context->timeout_value =
2850                         cpu_to_le16 (scmd->request->timeout / HZ);
2851                 cmd->request_desc->SCSIIO.RequestFlags =
2852                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2853                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2854         } else {
2855
2856                 /* set RAID context values */
2857                 pRAID_Context->config_seq_num = raid->seqNum;
2858                 if (instance->adapter_type != VENTURA_SERIES)
2859                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
2860                 pRAID_Context->timeout_value =
2861                         cpu_to_le16(raid->fpIoTimeoutForLd);
2862
2863                 /* get the DevHandle for the PD (since this is
2864                    fpNonRWCapable, this is a single disk RAID0) */
2865                 span = physArm = 0;
2866                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
2867                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
2868                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
2869
2870                 /* build request descriptor */
2871                 cmd->request_desc->SCSIIO.RequestFlags =
2872                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2873                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2874                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
2875
2876                 /* populate the LUN field */
2877                 memcpy(io_request->LUN, raid->LUN, 8);
2878
2879                 /* build the raidScsiIO structure */
2880                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2881                 io_request->DevHandle = devHandle;
2882         }
2883 }
2884
2885 /**
2886  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
2887  * @instance:           Adapter soft state
2888  * @scp:                SCSI command
2889  * @cmd:                Command to be prepared
2890  * @fp_possible:        parameter to detect fast path or firmware path io.
2891  *
2892  * Prepares the io_request frame for rw/non-rw io cmds for syspds
2893  */
2894 static void
2895 megasas_build_syspd_fusion(struct megasas_instance *instance,
2896         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
2897         bool fp_possible)
2898 {
2899         u32 device_id;
2900         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2901         u16 pd_index = 0;
2902         u16 os_timeout_value;
2903         u16 timeout_limit;
2904         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2905         struct RAID_CONTEXT     *pRAID_Context;
2906         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
2907         struct MR_PRIV_DEVICE *mr_device_priv_data;
2908         struct fusion_context *fusion = instance->ctrl_context;
2909         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
2910
2911         device_id = MEGASAS_DEV_INDEX(scmd);
2912         pd_index = MEGASAS_PD_INDEX(scmd);
2913         os_timeout_value = scmd->request->timeout / HZ;
2914         mr_device_priv_data = scmd->device->hostdata;
2915         cmd->pd_interface = mr_device_priv_data->interface_type;
2916
2917         io_request = cmd->io_request;
2918         /* get RAID_Context pointer */
2919         pRAID_Context = &io_request->RaidContext.raid_context;
2920         pRAID_Context->reg_lock_flags = 0;
2921         pRAID_Context->reg_lock_row_lba = 0;
2922         pRAID_Context->reg_lock_length = 0;
2923         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2924         io_request->LUN[1] = scmd->device->lun;
2925         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
2926                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
2927
2928         /* If FW supports PD sequence number */
2929         if (instance->use_seqnum_jbod_fp &&
2930                 instance->pd_list[pd_index].driveType == TYPE_DISK) {
2931                 /* TgtId must be incremented by 255 as jbod seq number is index
2932                  * below raid map
2933                  */
2934                  /* More than 256 PD/JBOD support for Ventura */
2935                 if (instance->support_morethan256jbod)
2936                         pRAID_Context->virtual_disk_tgt_id =
2937                                 pd_sync->seq[pd_index].pd_target_id;
2938                 else
2939                         pRAID_Context->virtual_disk_tgt_id =
2940                                 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
2941                 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum;
2942                 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
2943                 if (instance->adapter_type == VENTURA_SERIES) {
2944                         io_request->RaidContext.raid_context_g35.routing_flags |=
2945                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2946                         io_request->RaidContext.raid_context_g35.nseg_type |=
2947                                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
2948                         io_request->RaidContext.raid_context_g35.nseg_type |=
2949                                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2950                 } else {
2951                         pRAID_Context->type = MPI2_TYPE_CUDA;
2952                         pRAID_Context->nseg = 0x1;
2953                         pRAID_Context->reg_lock_flags |=
2954                                 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
2955                 }
2956         } else if (fusion->fast_path_io) {
2957                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2958                 pRAID_Context->config_seq_num = 0;
2959                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2960                 io_request->DevHandle =
2961                         local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
2962         } else {
2963                 /* Want to send all IO via FW path */
2964                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2965                 pRAID_Context->config_seq_num = 0;
2966                 io_request->DevHandle = cpu_to_le16(0xFFFF);
2967         }
2968
2969         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
2970
2971         cmd->request_desc->SCSIIO.MSIxIndex =
2972                 instance->reply_map[raw_smp_processor_id()];
2973
2974         if (!fp_possible) {
2975                 /* system pd firmware path */
2976                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2977                 cmd->request_desc->SCSIIO.RequestFlags =
2978                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2979                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2980                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
2981                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2982         } else {
2983                 if (os_timeout_value)
2984                         os_timeout_value++;
2985
2986                 /* system pd Fast Path */
2987                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2988                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
2989                                 255 : 0xFFFF;
2990                 pRAID_Context->timeout_value =
2991                         cpu_to_le16((os_timeout_value > timeout_limit) ?
2992                         timeout_limit : os_timeout_value);
2993                 if (instance->adapter_type >= INVADER_SERIES)
2994                         io_request->IoFlags |=
2995                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2996
2997                 cmd->request_desc->SCSIIO.RequestFlags =
2998                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2999                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3000         }
3001 }
3002
3003 /**
3004  * megasas_build_io_fusion -    Prepares IOs to devices
3005  * @instance:           Adapter soft state
3006  * @scp:                SCSI command
3007  * @cmd:                Command to be prepared
3008  *
3009  * Invokes helper functions to prepare request frames
3010  * and sets flags appropriate for IO/Non-IO cmd
3011  */
3012 int
3013 megasas_build_io_fusion(struct megasas_instance *instance,
3014                         struct scsi_cmnd *scp,
3015                         struct megasas_cmd_fusion *cmd)
3016 {
3017         int sge_count;
3018         u8  cmd_type;
3019         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3020         struct MR_PRIV_DEVICE *mr_device_priv_data;
3021         mr_device_priv_data = scp->device->hostdata;
3022
3023         /* Zero out some fields so they don't get reused */
3024         memset(io_request->LUN, 0x0, 8);
3025         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3026         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3027         io_request->EEDPFlags = 0;
3028         io_request->Control = 0;
3029         io_request->EEDPBlockSize = 0;
3030         io_request->ChainOffset = 0;
3031         io_request->RaidContext.raid_context.raid_flags = 0;
3032         io_request->RaidContext.raid_context.type = 0;
3033         io_request->RaidContext.raid_context.nseg = 0;
3034
3035         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3036         /*
3037          * Just the CDB length,rest of the Flags are zero
3038          * This will be modified for FP in build_ldio_fusion
3039          */
3040         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3041
3042         switch (cmd_type = megasas_cmd_type(scp)) {
3043         case READ_WRITE_LDIO:
3044                 megasas_build_ldio_fusion(instance, scp, cmd);
3045                 break;
3046         case NON_READ_WRITE_LDIO:
3047                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3048                 break;
3049         case READ_WRITE_SYSPDIO:
3050                 megasas_build_syspd_fusion(instance, scp, cmd, true);
3051                 break;
3052         case NON_READ_WRITE_SYSPDIO:
3053                 if (instance->secure_jbod_support ||
3054                     mr_device_priv_data->is_tm_capable)
3055                         megasas_build_syspd_fusion(instance, scp, cmd, false);
3056                 else
3057                         megasas_build_syspd_fusion(instance, scp, cmd, true);
3058                 break;
3059         default:
3060                 break;
3061         }
3062
3063         /*
3064          * Construct SGL
3065          */
3066
3067         sge_count = megasas_make_sgl(instance, scp, cmd);
3068
3069         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3070                 dev_err(&instance->pdev->dev,
3071                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
3072                         __func__, __LINE__, sge_count, instance->max_num_sge);
3073                 return 1;
3074         }
3075
3076         if (instance->adapter_type == VENTURA_SERIES) {
3077                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3078                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3079                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3080         } else {
3081                 /* numSGE store lower 8 bit of sge_count.
3082                  * numSGEExt store higher 8 bit of sge_count
3083                  */
3084                 io_request->RaidContext.raid_context.num_sge = sge_count;
3085                 io_request->RaidContext.raid_context.num_sge_ext =
3086                         (u8)(sge_count >> 8);
3087         }
3088
3089         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3090
3091         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
3092                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3093         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
3094                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3095
3096         io_request->SGLOffset0 =
3097                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3098
3099         io_request->SenseBufferLowAddress =
3100                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3101         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3102
3103         cmd->scmd = scp;
3104         scp->SCp.ptr = (char *)cmd;
3105
3106         return 0;
3107 }
3108
3109 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3110 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3111 {
3112         u8 *p;
3113         struct fusion_context *fusion;
3114
3115         fusion = instance->ctrl_context;
3116         p = fusion->req_frames_desc +
3117                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3118
3119         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3120 }
3121
3122
3123 /* megasas_prepate_secondRaid1_IO
3124  *  It prepares the raid 1 second IO
3125  */
3126 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3127                             struct megasas_cmd_fusion *cmd,
3128                             struct megasas_cmd_fusion *r1_cmd)
3129 {
3130         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3131         struct fusion_context *fusion;
3132         fusion = instance->ctrl_context;
3133         req_desc = cmd->request_desc;
3134         /* copy the io request frame as well as 8 SGEs data for r1 command*/
3135         memcpy(r1_cmd->io_request, cmd->io_request,
3136                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3137         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3138                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3139         /*sense buffer is different for r1 command*/
3140         r1_cmd->io_request->SenseBufferLowAddress =
3141                         cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3142         r1_cmd->scmd = cmd->scmd;
3143         req_desc2 = megasas_get_request_descriptor(instance,
3144                                                    (r1_cmd->index - 1));
3145         req_desc2->Words = 0;
3146         r1_cmd->request_desc = req_desc2;
3147         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3148         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3149         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3150         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3151         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3152         cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3153                         cpu_to_le16(r1_cmd->index);
3154         r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3155                         cpu_to_le16(cmd->index);
3156         /*MSIxIndex of both commands request descriptors should be same*/
3157         r1_cmd->request_desc->SCSIIO.MSIxIndex =
3158                         cmd->request_desc->SCSIIO.MSIxIndex;
3159         /*span arm is different for r1 cmd*/
3160         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3161                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3162 }
3163
3164 /**
3165  * megasas_build_and_issue_cmd_fusion -Main routine for building and
3166  *                                     issuing non IOCTL cmd
3167  * @instance:                   Adapter soft state
3168  * @scmd:                       pointer to scsi cmd from OS
3169  */
3170 static u32
3171 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3172                                    struct scsi_cmnd *scmd)
3173 {
3174         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3175         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3176         u32 index;
3177         struct fusion_context *fusion;
3178
3179         fusion = instance->ctrl_context;
3180
3181         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3182                 instance->ldio_threshold &&
3183                 (atomic_inc_return(&instance->ldio_outstanding) >
3184                 instance->ldio_threshold)) {
3185                 atomic_dec(&instance->ldio_outstanding);
3186                 return SCSI_MLQUEUE_DEVICE_BUSY;
3187         }
3188
3189         if (atomic_inc_return(&instance->fw_outstanding) >
3190                         instance->host->can_queue) {
3191                 atomic_dec(&instance->fw_outstanding);
3192                 return SCSI_MLQUEUE_HOST_BUSY;
3193         }
3194
3195         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3196
3197         if (!cmd) {
3198                 atomic_dec(&instance->fw_outstanding);
3199                 return SCSI_MLQUEUE_HOST_BUSY;
3200         }
3201
3202         index = cmd->index;
3203
3204         req_desc = megasas_get_request_descriptor(instance, index-1);
3205
3206         req_desc->Words = 0;
3207         cmd->request_desc = req_desc;
3208
3209         if (megasas_build_io_fusion(instance, scmd, cmd)) {
3210                 megasas_return_cmd_fusion(instance, cmd);
3211                 dev_err(&instance->pdev->dev, "Error building command\n");
3212                 cmd->request_desc = NULL;
3213                 atomic_dec(&instance->fw_outstanding);
3214                 return SCSI_MLQUEUE_HOST_BUSY;
3215         }
3216
3217         req_desc = cmd->request_desc;
3218         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3219
3220         if (cmd->io_request->ChainOffset != 0 &&
3221             cmd->io_request->ChainOffset != 0xF)
3222                 dev_err(&instance->pdev->dev, "The chain offset value is not "
3223                        "correct : %x\n", cmd->io_request->ChainOffset);
3224         /*
3225          *      if it is raid 1/10 fp write capable.
3226          *      try to get second command from pool and construct it.
3227          *      From FW, it has confirmed that lba values of two PDs
3228          *      corresponds to single R1/10 LD are always same
3229          *
3230          */
3231         /*      driver side count always should be less than max_fw_cmds
3232          *      to get new command
3233          */
3234         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3235                 r1_cmd = megasas_get_cmd_fusion(instance,
3236                                 (scmd->request->tag + instance->max_fw_cmds));
3237                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3238         }
3239
3240
3241         /*
3242          * Issue the command to the FW
3243          */
3244
3245         megasas_fire_cmd_fusion(instance, req_desc);
3246
3247         if (r1_cmd)
3248                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3249
3250
3251         return 0;
3252 }
3253
3254 /**
3255  * megasas_complete_r1_command -
3256  * completes R1 FP write commands which has valid peer smid
3257  * @instance:                   Adapter soft state
3258  * @cmd_fusion:                 MPT command frame
3259  *
3260  */
3261 static inline void
3262 megasas_complete_r1_command(struct megasas_instance *instance,
3263                             struct megasas_cmd_fusion *cmd)
3264 {
3265         u8 *sense, status, ex_status;
3266         u32 data_length;
3267         u16 peer_smid;
3268         struct fusion_context *fusion;
3269         struct megasas_cmd_fusion *r1_cmd = NULL;
3270         struct scsi_cmnd *scmd_local = NULL;
3271         struct RAID_CONTEXT_G35 *rctx_g35;
3272
3273         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3274         fusion = instance->ctrl_context;
3275         peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid);
3276
3277         r1_cmd = fusion->cmd_list[peer_smid - 1];
3278         scmd_local = cmd->scmd;
3279         status = rctx_g35->status;
3280         ex_status = rctx_g35->ex_status;
3281         data_length = cmd->io_request->DataLength;
3282         sense = cmd->sense;
3283
3284         cmd->cmd_completed = true;
3285
3286         /* Check if peer command is completed or not*/
3287         if (r1_cmd->cmd_completed) {
3288                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3289                 if (rctx_g35->status != MFI_STAT_OK) {
3290                         status = rctx_g35->status;
3291                         ex_status = rctx_g35->ex_status;
3292                         data_length = r1_cmd->io_request->DataLength;
3293                         sense = r1_cmd->sense;
3294                 }
3295
3296                 megasas_return_cmd_fusion(instance, r1_cmd);
3297                 map_cmd_status(fusion, scmd_local, status, ex_status,
3298                                le32_to_cpu(data_length), sense);
3299                 if (instance->ldio_threshold &&
3300                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3301                         atomic_dec(&instance->ldio_outstanding);
3302                 scmd_local->SCp.ptr = NULL;
3303                 megasas_return_cmd_fusion(instance, cmd);
3304                 scsi_dma_unmap(scmd_local);
3305                 scmd_local->scsi_done(scmd_local);
3306         }
3307 }
3308
3309 /**
3310  * complete_cmd_fusion -        Completes command
3311  * @instance:                   Adapter soft state
3312  * Completes all commands that is in reply descriptor queue
3313  */
3314 int
3315 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
3316 {
3317         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3318         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3319         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3320         struct fusion_context *fusion;
3321         struct megasas_cmd *cmd_mfi;
3322         struct megasas_cmd_fusion *cmd_fusion;
3323         u16 smid, num_completed;
3324         u8 reply_descript_type, *sense, status, extStatus;
3325         u32 device_id, data_length;
3326         union desc_value d_val;
3327         struct LD_LOAD_BALANCE_INFO *lbinfo;
3328         int threshold_reply_count = 0;
3329         struct scsi_cmnd *scmd_local = NULL;
3330         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3331         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3332
3333         fusion = instance->ctrl_context;
3334
3335         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3336                 return IRQ_HANDLED;
3337
3338         desc = fusion->reply_frames_desc[MSIxIndex] +
3339                                 fusion->last_reply_idx[MSIxIndex];
3340
3341         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3342
3343         d_val.word = desc->Words;
3344
3345         reply_descript_type = reply_desc->ReplyFlags &
3346                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3347
3348         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3349                 return IRQ_NONE;
3350
3351         num_completed = 0;
3352
3353         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3354                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3355
3356                 smid = le16_to_cpu(reply_desc->SMID);
3357                 cmd_fusion = fusion->cmd_list[smid - 1];
3358                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3359                                                 cmd_fusion->io_request;
3360
3361                 scmd_local = cmd_fusion->scmd;
3362                 status = scsi_io_req->RaidContext.raid_context.status;
3363                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3364                 sense = cmd_fusion->sense;
3365                 data_length = scsi_io_req->DataLength;
3366
3367                 switch (scsi_io_req->Function) {
3368                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3369                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3370                                                 cmd_fusion->io_request;
3371                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3372                                                 &mr_tm_req->TmRequest;
3373                         dev_dbg(&instance->pdev->dev, "TM completion:"
3374                                 "type: 0x%x TaskMID: 0x%x\n",
3375                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3376                         complete(&cmd_fusion->done);
3377                         break;
3378                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3379                         /* Update load balancing info */
3380                         if (fusion->load_balance_info &&
3381                             (cmd_fusion->scmd->SCp.Status &
3382                             MEGASAS_LOAD_BALANCE_FLAG)) {
3383                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3384                                 lbinfo = &fusion->load_balance_info[device_id];
3385                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3386                                 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3387                         }
3388                         //Fall thru and complete IO
3389                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3390                         atomic_dec(&instance->fw_outstanding);
3391                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3392                                 map_cmd_status(fusion, scmd_local, status,
3393                                                extStatus, le32_to_cpu(data_length),
3394                                                sense);
3395                                 if (instance->ldio_threshold &&
3396                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3397                                         atomic_dec(&instance->ldio_outstanding);
3398                                 scmd_local->SCp.ptr = NULL;
3399                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3400                                 scsi_dma_unmap(scmd_local);
3401                                 scmd_local->scsi_done(scmd_local);
3402                         } else  /* Optimal VD - R1 FP command completion. */
3403                                 megasas_complete_r1_command(instance, cmd_fusion);
3404                         break;
3405                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3406                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3407                         /* Poll mode. Dummy free.
3408                          * In case of Interrupt mode, caller has reverse check.
3409                          */
3410                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3411                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3412                                 megasas_return_cmd(instance, cmd_mfi);
3413                         } else
3414                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3415                         break;
3416                 }
3417
3418                 fusion->last_reply_idx[MSIxIndex]++;
3419                 if (fusion->last_reply_idx[MSIxIndex] >=
3420                     fusion->reply_q_depth)
3421                         fusion->last_reply_idx[MSIxIndex] = 0;
3422
3423                 desc->Words = cpu_to_le64(ULLONG_MAX);
3424                 num_completed++;
3425                 threshold_reply_count++;
3426
3427                 /* Get the next reply descriptor */
3428                 if (!fusion->last_reply_idx[MSIxIndex])
3429                         desc = fusion->reply_frames_desc[MSIxIndex];
3430                 else
3431                         desc++;
3432
3433                 reply_desc =
3434                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3435
3436                 d_val.word = desc->Words;
3437
3438                 reply_descript_type = reply_desc->ReplyFlags &
3439                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3440
3441                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3442                         break;
3443                 /*
3444                  * Write to reply post host index register after completing threshold
3445                  * number of reply counts and still there are more replies in reply queue
3446                  * pending to be completed
3447                  */
3448                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
3449                         if (instance->msix_combined)
3450                                 writel(((MSIxIndex & 0x7) << 24) |
3451                                         fusion->last_reply_idx[MSIxIndex],
3452                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3453                         else
3454                                 writel((MSIxIndex << 24) |
3455                                         fusion->last_reply_idx[MSIxIndex],
3456                                         instance->reply_post_host_index_addr[0]);
3457                         threshold_reply_count = 0;
3458                 }
3459         }
3460
3461         if (!num_completed)
3462                 return IRQ_NONE;
3463
3464         wmb();
3465         if (instance->msix_combined)
3466                 writel(((MSIxIndex & 0x7) << 24) |
3467                         fusion->last_reply_idx[MSIxIndex],
3468                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3469         else
3470                 writel((MSIxIndex << 24) |
3471                         fusion->last_reply_idx[MSIxIndex],
3472                         instance->reply_post_host_index_addr[0]);
3473         megasas_check_and_restore_queue_depth(instance);
3474         return IRQ_HANDLED;
3475 }
3476
3477 /**
3478  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3479  * @instance:                   Adapter soft state
3480  */
3481 void megasas_sync_irqs(unsigned long instance_addr)
3482 {
3483         u32 count, i;
3484         struct megasas_instance *instance =
3485                 (struct megasas_instance *)instance_addr;
3486
3487         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3488
3489         for (i = 0; i < count; i++)
3490                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3491 }
3492
3493 /**
3494  * megasas_complete_cmd_dpc_fusion -    Completes command
3495  * @instance:                   Adapter soft state
3496  *
3497  * Tasklet to complete cmds
3498  */
3499 void
3500 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3501 {
3502         struct megasas_instance *instance =
3503                 (struct megasas_instance *)instance_addr;
3504         unsigned long flags;
3505         u32 count, MSIxIndex;
3506
3507         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3508
3509         /* If we have already declared adapter dead, donot complete cmds */
3510         spin_lock_irqsave(&instance->hba_lock, flags);
3511         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
3512                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3513                 return;
3514         }
3515         spin_unlock_irqrestore(&instance->hba_lock, flags);
3516
3517         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3518                 complete_cmd_fusion(instance, MSIxIndex);
3519 }
3520
3521 /**
3522  * megasas_isr_fusion - isr entry point
3523  */
3524 irqreturn_t megasas_isr_fusion(int irq, void *devp)
3525 {
3526         struct megasas_irq_context *irq_context = devp;
3527         struct megasas_instance *instance = irq_context->instance;
3528         u32 mfiStatus, fw_state, dma_state;
3529
3530         if (instance->mask_interrupts)
3531                 return IRQ_NONE;
3532
3533         if (!instance->msix_vectors) {
3534                 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
3535                 if (!mfiStatus)
3536                         return IRQ_NONE;
3537         }
3538
3539         /* If we are resetting, bail */
3540         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3541                 instance->instancet->clear_intr(instance->reg_set);
3542                 return IRQ_HANDLED;
3543         }
3544
3545         if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
3546                 instance->instancet->clear_intr(instance->reg_set);
3547                 /* If we didn't complete any commands, check for FW fault */
3548                 fw_state = instance->instancet->read_fw_status_reg(
3549                         instance->reg_set) & MFI_STATE_MASK;
3550                 dma_state = instance->instancet->read_fw_status_reg
3551                         (instance->reg_set) & MFI_STATE_DMADONE;
3552                 if (instance->crash_dump_drv_support &&
3553                         instance->crash_dump_app_support) {
3554                         /* Start collecting crash, if DMA bit is done */
3555                         if ((fw_state == MFI_STATE_FAULT) && dma_state)
3556                                 schedule_work(&instance->crash_init);
3557                         else if (fw_state == MFI_STATE_FAULT) {
3558                                 if (instance->unload == 0)
3559                                         schedule_work(&instance->work_init);
3560                         }
3561                 } else if (fw_state == MFI_STATE_FAULT) {
3562                         dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt"
3563                                "for scsi%d\n", instance->host->host_no);
3564                         if (instance->unload == 0)
3565                                 schedule_work(&instance->work_init);
3566                 }
3567         }
3568
3569         return IRQ_HANDLED;
3570 }
3571
3572 /**
3573  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3574  * @instance:                   Adapter soft state
3575  * mfi_cmd:                     megasas_cmd pointer
3576  *
3577  */
3578 void
3579 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3580                         struct megasas_cmd *mfi_cmd)
3581 {
3582         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3583         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3584         struct megasas_cmd_fusion *cmd;
3585         struct fusion_context *fusion;
3586         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3587
3588         fusion = instance->ctrl_context;
3589
3590         cmd = megasas_get_cmd_fusion(instance,
3591                         instance->max_scsi_cmds + mfi_cmd->index);
3592
3593         /*  Save the smid. To be used for returning the cmd */
3594         mfi_cmd->context.smid = cmd->index;
3595
3596         /*
3597          * For cmds where the flag is set, store the flag and check
3598          * on completion. For cmds with this flag, don't call
3599          * megasas_complete_cmd
3600          */
3601
3602         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3603                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3604
3605         io_req = cmd->io_request;
3606
3607         if (instance->adapter_type >= INVADER_SERIES) {
3608                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3609                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3610                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3611                 sgl_ptr_end->Flags = 0;
3612         }
3613
3614         mpi25_ieee_chain =
3615           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3616
3617         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3618         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3619                                        SGL) / 4;
3620         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3621
3622         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3623
3624         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3625                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3626
3627         mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3628 }
3629
3630 /**
3631  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3632  * @instance:                   Adapter soft state
3633  * @cmd:                        mfi cmd to build
3634  *
3635  */
3636 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3637 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3638 {
3639         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3640         u16 index;
3641
3642         build_mpt_mfi_pass_thru(instance, cmd);
3643         index = cmd->context.smid;
3644
3645         req_desc = megasas_get_request_descriptor(instance, index - 1);
3646
3647         req_desc->Words = 0;
3648         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3649                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3650
3651         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3652
3653         return req_desc;
3654 }
3655
3656 /**
3657  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3658  * @instance:                   Adapter soft state
3659  * @cmd:                        mfi cmd pointer
3660  *
3661  */
3662 void
3663 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3664                           struct megasas_cmd *cmd)
3665 {
3666         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3667
3668         req_desc = build_mpt_cmd(instance, cmd);
3669
3670         megasas_fire_cmd_fusion(instance, req_desc);
3671         return;
3672 }
3673
3674 /**
3675  * megasas_release_fusion -     Reverses the FW initialization
3676  * @instance:                   Adapter soft state
3677  */
3678 void
3679 megasas_release_fusion(struct megasas_instance *instance)
3680 {
3681         megasas_free_ioc_init_cmd(instance);
3682         megasas_free_cmds(instance);
3683         megasas_free_cmds_fusion(instance);
3684
3685         iounmap(instance->reg_set);
3686
3687         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3688 }
3689
3690 /**
3691  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3692  * @regs:                       MFI register set
3693  */
3694 static u32
3695 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
3696 {
3697         return readl(&(regs)->outbound_scratch_pad);
3698 }
3699
3700 /**
3701  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
3702  * @instance:                           Controller's soft instance
3703  * return:                              Number of allocated host crash buffers
3704  */
3705 static void
3706 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3707 {
3708         unsigned int i;
3709
3710         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3711                 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3712                 if (!instance->crash_buf[i]) {
3713                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3714                                 "memory allocation failed at index %d\n", i);
3715                         break;
3716                 }
3717         }
3718         instance->drv_buf_alloc = i;
3719 }
3720
3721 /**
3722  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
3723  * @instance:                           Controller's soft instance
3724  */
3725 void
3726 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3727 {
3728         unsigned int i;
3729         for (i = 0; i < instance->drv_buf_alloc; i++) {
3730                 if (instance->crash_buf[i])
3731                         vfree(instance->crash_buf[i]);
3732         }
3733         instance->drv_buf_index = 0;
3734         instance->drv_buf_alloc = 0;
3735         instance->fw_crash_state = UNAVAILABLE;
3736         instance->fw_crash_buffer_size = 0;
3737 }
3738
3739 /**
3740  * megasas_adp_reset_fusion -   For controller reset
3741  * @regs:                               MFI register set
3742  */
3743 static int
3744 megasas_adp_reset_fusion(struct megasas_instance *instance,
3745                          struct megasas_register_set __iomem *regs)
3746 {
3747         u32 host_diag, abs_state, retry;
3748
3749         /* Now try to reset the chip */
3750         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3751         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3752         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3753         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3754         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3755         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3756         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3757
3758         /* Check that the diag write enable (DRWE) bit is on */
3759         host_diag = readl(&instance->reg_set->fusion_host_diag);
3760         retry = 0;
3761         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
3762                 msleep(100);
3763                 host_diag = readl(&instance->reg_set->fusion_host_diag);
3764                 if (retry++ == 100) {
3765                         dev_warn(&instance->pdev->dev,
3766                                 "Host diag unlock failed from %s %d\n",
3767                                 __func__, __LINE__);
3768                         break;
3769                 }
3770         }
3771         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
3772                 return -1;
3773
3774         /* Send chip reset command */
3775         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
3776                 &instance->reg_set->fusion_host_diag);
3777         msleep(3000);
3778
3779         /* Make sure reset adapter bit is cleared */
3780         host_diag = readl(&instance->reg_set->fusion_host_diag);
3781         retry = 0;
3782         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
3783                 msleep(100);
3784                 host_diag = readl(&instance->reg_set->fusion_host_diag);
3785                 if (retry++ == 1000) {
3786                         dev_warn(&instance->pdev->dev,
3787                                 "Diag reset adapter never cleared %s %d\n",
3788                                 __func__, __LINE__);
3789                         break;
3790                 }
3791         }
3792         if (host_diag & HOST_DIAG_RESET_ADAPTER)
3793                 return -1;
3794
3795         abs_state = instance->instancet->read_fw_status_reg(instance->reg_set)
3796                         & MFI_STATE_MASK;
3797         retry = 0;
3798
3799         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
3800                 msleep(100);
3801                 abs_state = instance->instancet->
3802                         read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
3803         }
3804         if (abs_state <= MFI_STATE_FW_INIT) {
3805                 dev_warn(&instance->pdev->dev,
3806                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
3807                         abs_state, __func__, __LINE__);
3808                 return -1;
3809         }
3810
3811         return 0;
3812 }
3813
3814 /**
3815  * megasas_check_reset_fusion - For controller reset check
3816  * @regs:                               MFI register set
3817  */
3818 static int
3819 megasas_check_reset_fusion(struct megasas_instance *instance,
3820                            struct megasas_register_set __iomem *regs)
3821 {
3822         return 0;
3823 }
3824
3825 /* This function waits for outstanding commands on fusion to complete */
3826 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
3827                                         int reason, int *convert)
3828 {
3829         int i, outstanding, retval = 0, hb_seconds_missed = 0;
3830         u32 fw_state;
3831
3832         for (i = 0; i < resetwaittime; i++) {
3833                 /* Check if firmware is in fault state */
3834                 fw_state = instance->instancet->read_fw_status_reg(
3835                         instance->reg_set) & MFI_STATE_MASK;
3836                 if (fw_state == MFI_STATE_FAULT) {
3837                         dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
3838                                " will reset adapter scsi%d.\n",
3839                                 instance->host->host_no);
3840                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3841                         if (instance->requestorId && reason) {
3842                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
3843                                 " state while polling during"
3844                                 " I/O timeout handling for %d\n",
3845                                 instance->host->host_no);
3846                                 *convert = 1;
3847                         }
3848
3849                         retval = 1;
3850                         goto out;
3851                 }
3852
3853                 if (reason == MFI_IO_TIMEOUT_OCR) {
3854                         dev_info(&instance->pdev->dev,
3855                                 "MFI IO is timed out, initiating OCR\n");
3856                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3857                         retval = 1;
3858                         goto out;
3859                 }
3860
3861                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
3862                 if (instance->requestorId && !reason) {
3863                         retval = 1;
3864                         goto out;
3865                 }
3866
3867                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
3868                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
3869                         if (instance->hb_host_mem->HB.fwCounter !=
3870                             instance->hb_host_mem->HB.driverCounter) {
3871                                 instance->hb_host_mem->HB.driverCounter =
3872                                         instance->hb_host_mem->HB.fwCounter;
3873                                 hb_seconds_missed = 0;
3874                         } else {
3875                                 hb_seconds_missed++;
3876                                 if (hb_seconds_missed ==
3877                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
3878                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
3879                                                " Heartbeat never completed "
3880                                                " while polling during I/O "
3881                                                " timeout handling for "
3882                                                "scsi%d.\n",
3883                                                instance->host->host_no);
3884                                                *convert = 1;
3885                                                retval = 1;
3886                                                goto out;
3887                                 }
3888                         }
3889                 }
3890
3891                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3892                 outstanding = atomic_read(&instance->fw_outstanding);
3893                 if (!outstanding)
3894                         goto out;
3895
3896                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
3897                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
3898                                "commands to complete for scsi%d\n", i,
3899                                outstanding, instance->host->host_no);
3900                 }
3901                 msleep(1000);
3902         }
3903
3904         if (atomic_read(&instance->fw_outstanding)) {
3905                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
3906                        "will reset adapter scsi%d.\n",
3907                        instance->host->host_no);
3908                 *convert = 1;
3909                 retval = 1;
3910         }
3911 out:
3912         return retval;
3913 }
3914
3915 void  megasas_reset_reply_desc(struct megasas_instance *instance)
3916 {
3917         int i, j, count;
3918         struct fusion_context *fusion;
3919         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
3920
3921         fusion = instance->ctrl_context;
3922         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3923         for (i = 0 ; i < count ; i++) {
3924                 fusion->last_reply_idx[i] = 0;
3925                 reply_desc = fusion->reply_frames_desc[i];
3926                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
3927                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
3928         }
3929 }
3930
3931 /*
3932  * megasas_refire_mgmt_cmd :    Re-fire management commands
3933  * @instance:                           Controller's soft instance
3934 */
3935 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
3936 {
3937         int j;
3938         struct megasas_cmd_fusion *cmd_fusion;
3939         struct fusion_context *fusion;
3940         struct megasas_cmd *cmd_mfi;
3941         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3942         u16 smid;
3943         bool refire_cmd = 0;
3944         u8 result;
3945         u32 opcode = 0;
3946
3947         fusion = instance->ctrl_context;
3948
3949         /* Re-fire management commands.
3950          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
3951          */
3952         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
3953                 cmd_fusion = fusion->cmd_list[j];
3954                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3955                 smid = le16_to_cpu(cmd_mfi->context.smid);
3956                 result = REFIRE_CMD;
3957
3958                 if (!smid)
3959                         continue;
3960
3961                 req_desc = megasas_get_request_descriptor(instance, smid - 1);
3962
3963                 switch (cmd_mfi->frame->hdr.cmd) {
3964                 case MFI_CMD_DCMD:
3965                         opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
3966                          /* Do not refire shutdown command */
3967                         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
3968                                 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
3969                                 result = COMPLETE_CMD;
3970                                 break;
3971                         }
3972
3973                         refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
3974                                       (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3975                                       !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
3976
3977                         if (!refire_cmd)
3978                                 result = RETURN_CMD;
3979
3980                         break;
3981                 case MFI_CMD_NVME:
3982                         if (!instance->support_nvme_passthru) {
3983                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
3984                                 result = COMPLETE_CMD;
3985                         }
3986
3987                         break;
3988                 default:
3989                         break;
3990                 }
3991
3992                 switch (result) {
3993                 case REFIRE_CMD:
3994                         megasas_fire_cmd_fusion(instance, req_desc);
3995                         break;
3996                 case RETURN_CMD:
3997                         megasas_return_cmd(instance, cmd_mfi);
3998                         break;
3999                 case COMPLETE_CMD:
4000                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4001                         break;
4002                 }
4003         }
4004 }
4005
4006 /*
4007  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4008  * @instance: per adapter struct
4009  * @channel: the channel assigned by the OS
4010  * @id: the id assigned by the OS
4011  *
4012  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4013  */
4014
4015 static int megasas_track_scsiio(struct megasas_instance *instance,
4016                 int id, int channel)
4017 {
4018         int i, found = 0;
4019         struct megasas_cmd_fusion *cmd_fusion;
4020         struct fusion_context *fusion;
4021         fusion = instance->ctrl_context;
4022
4023         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4024                 cmd_fusion = fusion->cmd_list[i];
4025                 if (cmd_fusion->scmd &&
4026                         (cmd_fusion->scmd->device->id == id &&
4027                         cmd_fusion->scmd->device->channel == channel)) {
4028                         dev_info(&instance->pdev->dev,
4029                                 "SCSI commands pending to target"
4030                                 "channel %d id %d \tSMID: 0x%x\n",
4031                                 channel, id, cmd_fusion->index);
4032                         scsi_print_command(cmd_fusion->scmd);
4033                         found = 1;
4034                         break;
4035                 }
4036         }
4037
4038         return found ? FAILED : SUCCESS;
4039 }
4040
4041 /**
4042  * megasas_tm_response_code - translation of device response code
4043  * @ioc: per adapter object
4044  * @mpi_reply: MPI reply returned by firmware
4045  *
4046  * Return nothing.
4047  */
4048 static void
4049 megasas_tm_response_code(struct megasas_instance *instance,
4050                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4051 {
4052         char *desc;
4053
4054         switch (mpi_reply->ResponseCode) {
4055         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4056                 desc = "task management request completed";
4057                 break;
4058         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4059                 desc = "invalid frame";
4060                 break;
4061         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4062                 desc = "task management request not supported";
4063                 break;
4064         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4065                 desc = "task management request failed";
4066                 break;
4067         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4068                 desc = "task management request succeeded";
4069                 break;
4070         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4071                 desc = "invalid lun";
4072                 break;
4073         case 0xA:
4074                 desc = "overlapped tag attempted";
4075                 break;
4076         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4077                 desc = "task queued, however not sent to target";
4078                 break;
4079         default:
4080                 desc = "unknown";
4081                 break;
4082         }
4083         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4084                 mpi_reply->ResponseCode, desc);
4085         dev_dbg(&instance->pdev->dev,
4086                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4087                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4088                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4089                 mpi_reply->Function, mpi_reply->TaskType,
4090                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4091 }
4092
4093 /**
4094  * megasas_issue_tm - main routine for sending tm requests
4095  * @instance: per adapter struct
4096  * @device_handle: device handle
4097  * @channel: the channel assigned by the OS
4098  * @id: the id assigned by the OS
4099  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4100  * @smid_task: smid assigned to the task
4101  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4102  * Context: user
4103  *
4104  * MegaRaid use MPT interface for Task Magement request.
4105  * A generic API for sending task management requests to firmware.
4106  *
4107  * Return SUCCESS or FAILED.
4108  */
4109 static int
4110 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4111         uint channel, uint id, u16 smid_task, u8 type)
4112 {
4113         struct MR_TASK_MANAGE_REQUEST *mr_request;
4114         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4115         unsigned long timeleft;
4116         struct megasas_cmd_fusion *cmd_fusion;
4117         struct megasas_cmd *cmd_mfi;
4118         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4119         struct fusion_context *fusion = NULL;
4120         struct megasas_cmd_fusion *scsi_lookup;
4121         int rc;
4122         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4123
4124         fusion = instance->ctrl_context;
4125
4126         cmd_mfi = megasas_get_cmd(instance);
4127
4128         if (!cmd_mfi) {
4129                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4130                         __func__, __LINE__);
4131                 return -ENOMEM;
4132         }
4133
4134         cmd_fusion = megasas_get_cmd_fusion(instance,
4135                         instance->max_scsi_cmds + cmd_mfi->index);
4136
4137         /*  Save the smid. To be used for returning the cmd */
4138         cmd_mfi->context.smid = cmd_fusion->index;
4139
4140         req_desc = megasas_get_request_descriptor(instance,
4141                         (cmd_fusion->index - 1));
4142
4143         cmd_fusion->request_desc = req_desc;
4144         req_desc->Words = 0;
4145
4146         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4147         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4148         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4149         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4150         mpi_request->DevHandle = cpu_to_le16(device_handle);
4151         mpi_request->TaskType = type;
4152         mpi_request->TaskMID = cpu_to_le16(smid_task);
4153         mpi_request->LUN[1] = 0;
4154
4155
4156         req_desc = cmd_fusion->request_desc;
4157         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4158         req_desc->HighPriority.RequestFlags =
4159                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4160                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4161         req_desc->HighPriority.MSIxIndex =  0;
4162         req_desc->HighPriority.LMID = 0;
4163         req_desc->HighPriority.Reserved1 = 0;
4164
4165         if (channel < MEGASAS_MAX_PD_CHANNELS)
4166                 mr_request->tmReqFlags.isTMForPD = 1;
4167         else
4168                 mr_request->tmReqFlags.isTMForLD = 1;
4169
4170         init_completion(&cmd_fusion->done);
4171         megasas_fire_cmd_fusion(instance, req_desc);
4172
4173         timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ);
4174
4175         if (!timeleft) {
4176                 dev_err(&instance->pdev->dev,
4177                         "task mgmt type 0x%x timed out\n", type);
4178                 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
4179                 mutex_unlock(&instance->reset_mutex);
4180                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4181                 mutex_lock(&instance->reset_mutex);
4182                 return rc;
4183         }
4184
4185         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4186         megasas_tm_response_code(instance, mpi_reply);
4187
4188         megasas_return_cmd(instance, cmd_mfi);
4189         rc = SUCCESS;
4190         switch (type) {
4191         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4192                 scsi_lookup = fusion->cmd_list[smid_task - 1];
4193
4194                 if (scsi_lookup->scmd == NULL)
4195                         break;
4196                 else {
4197                         instance->instancet->disable_intr(instance);
4198                         megasas_sync_irqs((unsigned long)instance);
4199                         instance->instancet->enable_intr(instance);
4200                         if (scsi_lookup->scmd == NULL)
4201                                 break;
4202                 }
4203                 rc = FAILED;
4204                 break;
4205
4206         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4207                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4208                         break;
4209                 instance->instancet->disable_intr(instance);
4210                 megasas_sync_irqs((unsigned long)instance);
4211                 rc = megasas_track_scsiio(instance, id, channel);
4212                 instance->instancet->enable_intr(instance);
4213
4214                 break;
4215         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4216         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4217                 break;
4218         default:
4219                 rc = FAILED;
4220                 break;
4221         }
4222
4223         return rc;
4224
4225 }
4226
4227 /*
4228  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4229  * @instance: per adapter struct
4230  *
4231  * Return Non Zero index, if SMID found in outstanding commands
4232  */
4233 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4234 {
4235         int i, ret = 0;
4236         struct megasas_instance *instance;
4237         struct megasas_cmd_fusion *cmd_fusion;
4238         struct fusion_context *fusion;
4239
4240         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4241
4242         fusion = instance->ctrl_context;
4243
4244         for (i = 0; i < instance->max_scsi_cmds; i++) {
4245                 cmd_fusion = fusion->cmd_list[i];
4246                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4247                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4248                                 " SMID: %d\n", cmd_fusion->index);
4249                         ret = cmd_fusion->index;
4250                         break;
4251                 }
4252         }
4253
4254         return ret;
4255 }
4256
4257 /*
4258 * megasas_get_tm_devhandle - Get devhandle for TM request
4259 * @sdev-                     OS provided scsi device
4260 *
4261 * Returns-                   devhandle/targetID of SCSI device
4262 */
4263 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4264 {
4265         u16 pd_index = 0;
4266         u32 device_id;
4267         struct megasas_instance *instance;
4268         struct fusion_context *fusion;
4269         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4270         u16 devhandle = (u16)ULONG_MAX;
4271
4272         instance = (struct megasas_instance *)sdev->host->hostdata;
4273         fusion = instance->ctrl_context;
4274
4275         if (!MEGASAS_IS_LOGICAL(sdev)) {
4276                 if (instance->use_seqnum_jbod_fp) {
4277                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4278                                     + sdev->id;
4279                         pd_sync = (void *)fusion->pd_seq_sync
4280                                         [(instance->pd_seq_map_id - 1) & 1];
4281                         devhandle = pd_sync->seq[pd_index].devHandle;
4282                 } else
4283                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4284                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4285         } else {
4286                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4287                                 + sdev->id;
4288                 devhandle = device_id;
4289         }
4290
4291         return devhandle;
4292 }
4293
4294 /*
4295  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4296  * @scmd : pointer to scsi command object
4297  *
4298  * Return SUCCESS, if command aborted else FAILED
4299  */
4300
4301 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4302 {
4303         struct megasas_instance *instance;
4304         u16 smid, devhandle;
4305         struct fusion_context *fusion;
4306         int ret;
4307         struct MR_PRIV_DEVICE *mr_device_priv_data;
4308         mr_device_priv_data = scmd->device->hostdata;
4309
4310
4311         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4312         fusion = instance->ctrl_context;
4313
4314         scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd);
4315         scsi_print_command(scmd);
4316
4317         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4318                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4319                 "SCSI host:%d\n", instance->host->host_no);
4320                 ret = FAILED;
4321                 return ret;
4322         }
4323
4324         if (!mr_device_priv_data) {
4325                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4326                         "scmd(%p)\n", scmd);
4327                 scmd->result = DID_NO_CONNECT << 16;
4328                 ret = SUCCESS;
4329                 goto out;
4330         }
4331
4332
4333         if (!mr_device_priv_data->is_tm_capable) {
4334                 ret = FAILED;
4335                 goto out;
4336         }
4337
4338         mutex_lock(&instance->reset_mutex);
4339
4340         smid = megasas_fusion_smid_lookup(scmd);
4341
4342         if (!smid) {
4343                 ret = SUCCESS;
4344                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4345                         " issued is not found in oustanding commands\n");
4346                 mutex_unlock(&instance->reset_mutex);
4347                 goto out;
4348         }
4349
4350         devhandle = megasas_get_tm_devhandle(scmd->device);
4351
4352         if (devhandle == (u16)ULONG_MAX) {
4353                 ret = SUCCESS;
4354                 sdev_printk(KERN_INFO, scmd->device,
4355                         "task abort issued for invalid devhandle\n");
4356                 mutex_unlock(&instance->reset_mutex);
4357                 goto out;
4358         }
4359         sdev_printk(KERN_INFO, scmd->device,
4360                 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
4361                 scmd, devhandle);
4362
4363         mr_device_priv_data->tm_busy = 1;
4364         ret = megasas_issue_tm(instance, devhandle,
4365                         scmd->device->channel, scmd->device->id, smid,
4366                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK);
4367         mr_device_priv_data->tm_busy = 0;
4368
4369         mutex_unlock(&instance->reset_mutex);
4370 out:
4371         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
4372                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4373
4374         return ret;
4375 }
4376
4377 /*
4378  * megasas_reset_target_fusion : target reset function for fusion adapters
4379  * scmd: SCSI command pointer
4380  *
4381  * Returns SUCCESS if all commands associated with target aborted else FAILED
4382  */
4383
4384 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4385 {
4386
4387         struct megasas_instance *instance;
4388         int ret = FAILED;
4389         u16 devhandle;
4390         struct fusion_context *fusion;
4391         struct MR_PRIV_DEVICE *mr_device_priv_data;
4392         mr_device_priv_data = scmd->device->hostdata;
4393
4394         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4395         fusion = instance->ctrl_context;
4396
4397         sdev_printk(KERN_INFO, scmd->device,
4398                     "target reset called for scmd(%p)\n", scmd);
4399
4400         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4401                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4402                 "SCSI host:%d\n", instance->host->host_no);
4403                 ret = FAILED;
4404                 return ret;
4405         }
4406
4407         if (!mr_device_priv_data) {
4408                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4409                         "scmd(%p)\n", scmd);
4410                 scmd->result = DID_NO_CONNECT << 16;
4411                 ret = SUCCESS;
4412                 goto out;
4413         }
4414
4415
4416         if (!mr_device_priv_data->is_tm_capable) {
4417                 ret = FAILED;
4418                 goto out;
4419         }
4420
4421         mutex_lock(&instance->reset_mutex);
4422         devhandle = megasas_get_tm_devhandle(scmd->device);
4423
4424         if (devhandle == (u16)ULONG_MAX) {
4425                 ret = SUCCESS;
4426                 sdev_printk(KERN_INFO, scmd->device,
4427                         "target reset issued for invalid devhandle\n");
4428                 mutex_unlock(&instance->reset_mutex);
4429                 goto out;
4430         }
4431
4432         sdev_printk(KERN_INFO, scmd->device,
4433                 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
4434                 scmd, devhandle);
4435         mr_device_priv_data->tm_busy = 1;
4436         ret = megasas_issue_tm(instance, devhandle,
4437                         scmd->device->channel, scmd->device->id, 0,
4438                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET);
4439         mr_device_priv_data->tm_busy = 0;
4440         mutex_unlock(&instance->reset_mutex);
4441 out:
4442         scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
4443                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4444
4445         return ret;
4446 }
4447
4448 /*SRIOV get other instance in cluster if any*/
4449 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4450 {
4451         int i;
4452
4453         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4454                 if (megasas_mgmt_info.instance[i] &&
4455                         (megasas_mgmt_info.instance[i] != instance) &&
4456                          megasas_mgmt_info.instance[i]->requestorId &&
4457                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4458                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4459                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4460                         return megasas_mgmt_info.instance[i];
4461         }
4462         return NULL;
4463 }
4464
4465 /* Check for a second path that is currently UP */
4466 int megasas_check_mpio_paths(struct megasas_instance *instance,
4467         struct scsi_cmnd *scmd)
4468 {
4469         struct megasas_instance *peer_instance = NULL;
4470         int retval = (DID_REQUEUE << 16);
4471
4472         if (instance->peerIsPresent) {
4473                 peer_instance = megasas_get_peer_instance(instance);
4474                 if ((peer_instance) &&
4475                         (atomic_read(&peer_instance->adprecovery) ==
4476                         MEGASAS_HBA_OPERATIONAL))
4477                         retval = (DID_NO_CONNECT << 16);
4478         }
4479         return retval;
4480 }
4481
4482 /* Core fusion reset function */
4483 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4484 {
4485         int retval = SUCCESS, i, j, convert = 0;
4486         struct megasas_instance *instance;
4487         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4488         struct fusion_context *fusion;
4489         u32 abs_state, status_reg, reset_adapter;
4490         u32 io_timeout_in_crash_mode = 0;
4491         struct scsi_cmnd *scmd_local = NULL;
4492         struct scsi_device *sdev;
4493
4494         instance = (struct megasas_instance *)shost->hostdata;
4495         fusion = instance->ctrl_context;
4496
4497         mutex_lock(&instance->reset_mutex);
4498
4499         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4500                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4501                        "returning FAILED for scsi%d.\n",
4502                         instance->host->host_no);
4503                 mutex_unlock(&instance->reset_mutex);
4504                 return FAILED;
4505         }
4506         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
4507         abs_state = status_reg & MFI_STATE_MASK;
4508
4509         /* IO timeout detected, forcibly put FW in FAULT state */
4510         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4511                 instance->crash_dump_app_support && reason) {
4512                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4513                         "forcibly FAULT Firmware\n");
4514                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4515                 status_reg = readl(&instance->reg_set->doorbell);
4516                 writel(status_reg | MFI_STATE_FORCE_OCR,
4517                         &instance->reg_set->doorbell);
4518                 readl(&instance->reg_set->doorbell);
4519                 mutex_unlock(&instance->reset_mutex);
4520                 do {
4521                         ssleep(3);
4522                         io_timeout_in_crash_mode++;
4523                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4524                                 "seconds for crash dump collection and OCR "
4525                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4526                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4527                         (io_timeout_in_crash_mode < 80));
4528
4529                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4530                         dev_info(&instance->pdev->dev, "OCR done for IO "
4531                                 "timeout case\n");
4532                         retval = SUCCESS;
4533                 } else {
4534                         dev_info(&instance->pdev->dev, "Controller is not "
4535                                 "operational after 240 seconds wait for IO "
4536                                 "timeout case in FW crash dump mode\n do "
4537                                 "OCR/kill adapter\n");
4538                         retval = megasas_reset_fusion(shost, 0);
4539                 }
4540                 return retval;
4541         }
4542
4543         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4544                 del_timer_sync(&instance->sriov_heartbeat_timer);
4545         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4546         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4547         instance->instancet->disable_intr(instance);
4548         megasas_sync_irqs((unsigned long)instance);
4549
4550         /* First try waiting for commands to complete */
4551         if (megasas_wait_for_outstanding_fusion(instance, reason,
4552                                                 &convert)) {
4553                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4554                 dev_warn(&instance->pdev->dev, "resetting fusion "
4555                        "adapter scsi%d.\n", instance->host->host_no);
4556                 if (convert)
4557                         reason = 0;
4558
4559                 if (megasas_dbg_lvl & OCR_LOGS)
4560                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4561
4562                 /* Now return commands back to the OS */
4563                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4564                         cmd_fusion = fusion->cmd_list[i];
4565                         /*check for extra commands issued by driver*/
4566                         if (instance->adapter_type == VENTURA_SERIES) {
4567                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4568                                 megasas_return_cmd_fusion(instance, r1_cmd);
4569                         }
4570                         scmd_local = cmd_fusion->scmd;
4571                         if (cmd_fusion->scmd) {
4572                                 if (megasas_dbg_lvl & OCR_LOGS) {
4573                                         sdev_printk(KERN_INFO,
4574                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4575                                                 cmd_fusion->index);
4576                                         scsi_print_command(cmd_fusion->scmd);
4577                                 }
4578
4579                                 scmd_local->result =
4580                                         megasas_check_mpio_paths(instance,
4581                                                         scmd_local);
4582                                 if (instance->ldio_threshold &&
4583                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4584                                         atomic_dec(&instance->ldio_outstanding);
4585                                 megasas_return_cmd_fusion(instance, cmd_fusion);
4586                                 scsi_dma_unmap(scmd_local);
4587                                 scmd_local->scsi_done(scmd_local);
4588                         }
4589                 }
4590
4591                 atomic_set(&instance->fw_outstanding, 0);
4592
4593                 status_reg = instance->instancet->read_fw_status_reg(
4594                         instance->reg_set);
4595                 abs_state = status_reg & MFI_STATE_MASK;
4596                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4597                 if (instance->disableOnlineCtrlReset ||
4598                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4599                         /* Reset not supported, kill adapter */
4600                         dev_warn(&instance->pdev->dev, "Reset not supported"
4601                                ", killing adapter scsi%d.\n",
4602                                 instance->host->host_no);
4603                         megaraid_sas_kill_hba(instance);
4604                         instance->skip_heartbeat_timer_del = 1;
4605                         retval = FAILED;
4606                         goto out;
4607                 }
4608
4609                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4610                 if (instance->requestorId && !reason) {
4611                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4612                         goto transition_to_ready;
4613                 }
4614
4615                 /* Now try to reset the chip */
4616                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
4617
4618                         if (instance->instancet->adp_reset
4619                                 (instance, instance->reg_set))
4620                                 continue;
4621 transition_to_ready:
4622                         /* Wait for FW to become ready */
4623                         if (megasas_transition_to_ready(instance, 1)) {
4624                                 dev_warn(&instance->pdev->dev,
4625                                         "Failed to transition controller to ready for "
4626                                         "scsi%d.\n", instance->host->host_no);
4627                                 if (instance->requestorId && !reason)
4628                                         goto fail_kill_adapter;
4629                                 else
4630                                         continue;
4631                         }
4632                         megasas_reset_reply_desc(instance);
4633                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4634
4635                         if (megasas_ioc_init_fusion(instance)) {
4636                                 if (instance->requestorId && !reason)
4637                                         goto fail_kill_adapter;
4638                                 else
4639                                         continue;
4640                         }
4641
4642                         if (megasas_get_ctrl_info(instance)) {
4643                                 dev_info(&instance->pdev->dev,
4644                                         "Failed from %s %d\n",
4645                                         __func__, __LINE__);
4646                                 megaraid_sas_kill_hba(instance);
4647                                 retval = FAILED;
4648                                 goto out;
4649                         }
4650
4651                         megasas_refire_mgmt_cmd(instance);
4652
4653                         /* Reset load balance info */
4654                         if (fusion->load_balance_info)
4655                                 memset(fusion->load_balance_info, 0,
4656                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
4657                                        MAX_LOGICAL_DRIVES_EXT));
4658
4659                         if (!megasas_get_map_info(instance))
4660                                 megasas_sync_map_info(instance);
4661
4662                         megasas_setup_jbod_map(instance);
4663
4664                         shost_for_each_device(sdev, shost)
4665                                 megasas_set_dynamic_target_properties(sdev);
4666
4667                         /* reset stream detection array */
4668                         if (instance->adapter_type == VENTURA_SERIES) {
4669                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
4670                                         memset(fusion->stream_detect_by_ld[j],
4671                                         0, sizeof(struct LD_STREAM_DETECT));
4672                                  fusion->stream_detect_by_ld[j]->mru_bit_map
4673                                                 = MR_STREAM_BITMAP;
4674                                 }
4675                         }
4676
4677                         clear_bit(MEGASAS_FUSION_IN_RESET,
4678                                   &instance->reset_flags);
4679                         instance->instancet->enable_intr(instance);
4680                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4681
4682                         dev_info(&instance->pdev->dev, "Interrupts are enabled and"
4683                                 " controller is OPERATIONAL for scsi:%d\n",
4684                                 instance->host->host_no);
4685
4686                         /* Restart SR-IOV heartbeat */
4687                         if (instance->requestorId) {
4688                                 if (!megasas_sriov_start_heartbeat(instance, 0))
4689                                         megasas_start_timer(instance);
4690                                 else
4691                                         instance->skip_heartbeat_timer_del = 1;
4692                         }
4693
4694                         if (instance->crash_dump_drv_support &&
4695                                 instance->crash_dump_app_support)
4696                                 megasas_set_crash_dump_params(instance,
4697                                         MR_CRASH_BUF_TURN_ON);
4698                         else
4699                                 megasas_set_crash_dump_params(instance,
4700                                         MR_CRASH_BUF_TURN_OFF);
4701
4702                         retval = SUCCESS;
4703
4704                         /* Adapter reset completed successfully */
4705                         dev_warn(&instance->pdev->dev,
4706                                  "Reset successful for scsi%d.\n",
4707                                  instance->host->host_no);
4708
4709                         goto out;
4710                 }
4711 fail_kill_adapter:
4712                 /* Reset failed, kill the adapter */
4713                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
4714                        "adapter scsi%d.\n", instance->host->host_no);
4715                 megaraid_sas_kill_hba(instance);
4716                 instance->skip_heartbeat_timer_del = 1;
4717                 retval = FAILED;
4718         } else {
4719                 /* For VF: Restart HB timer if we didn't OCR */
4720                 if (instance->requestorId) {
4721                         megasas_start_timer(instance);
4722                 }
4723                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4724                 instance->instancet->enable_intr(instance);
4725                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4726         }
4727 out:
4728         clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4729         mutex_unlock(&instance->reset_mutex);
4730         return retval;
4731 }
4732
4733 /* Fusion Crash dump collection work queue */
4734 void  megasas_fusion_crash_dump_wq(struct work_struct *work)
4735 {
4736         struct megasas_instance *instance =
4737                 container_of(work, struct megasas_instance, crash_init);
4738         u32 status_reg;
4739         u8 partial_copy = 0;
4740
4741
4742         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
4743
4744         /*
4745          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
4746          * to host crash buffers
4747          */
4748         if (instance->drv_buf_index == 0) {
4749                 /* Buffer is already allocated for old Crash dump.
4750                  * Do OCR and do not wait for crash dump collection
4751                  */
4752                 if (instance->drv_buf_alloc) {
4753                         dev_info(&instance->pdev->dev, "earlier crash dump is "
4754                                 "not yet copied by application, ignoring this "
4755                                 "crash dump and initiating OCR\n");
4756                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4757                         writel(status_reg,
4758                                 &instance->reg_set->outbound_scratch_pad);
4759                         readl(&instance->reg_set->outbound_scratch_pad);
4760                         return;
4761                 }
4762                 megasas_alloc_host_crash_buffer(instance);
4763                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
4764                         "allocated: %d\n", instance->drv_buf_alloc);
4765         }
4766
4767         /*
4768          * Driver has allocated max buffers, which can be allocated
4769          * and FW has more crash dump data, then driver will
4770          * ignore the data.
4771          */
4772         if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
4773                 dev_info(&instance->pdev->dev, "Driver is done copying "
4774                         "the buffer: %d\n", instance->drv_buf_alloc);
4775                 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4776                 partial_copy = 1;
4777         } else {
4778                 memcpy(instance->crash_buf[instance->drv_buf_index],
4779                         instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
4780                 instance->drv_buf_index++;
4781                 status_reg &= ~MFI_STATE_DMADONE;
4782         }
4783
4784         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
4785                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
4786                         "of copied buffers: %d\n", instance->drv_buf_index);
4787                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
4788                 instance->fw_crash_state = AVAILABLE;
4789                 instance->drv_buf_index = 0;
4790                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
4791                 readl(&instance->reg_set->outbound_scratch_pad);
4792                 if (!partial_copy)
4793                         megasas_reset_fusion(instance->host, 0);
4794         } else {
4795                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
4796                 readl(&instance->reg_set->outbound_scratch_pad);
4797         }
4798 }
4799
4800
4801 /* Fusion OCR work queue */
4802 void megasas_fusion_ocr_wq(struct work_struct *work)
4803 {
4804         struct megasas_instance *instance =
4805                 container_of(work, struct megasas_instance, work_init);
4806
4807         megasas_reset_fusion(instance->host, 0);
4808 }
4809
4810 /* Allocate fusion context */
4811 int
4812 megasas_alloc_fusion_context(struct megasas_instance *instance)
4813 {
4814         struct fusion_context *fusion;
4815
4816         instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
4817                                          GFP_KERNEL);
4818         if (!instance->ctrl_context) {
4819                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4820                         __func__, __LINE__);
4821                 return -ENOMEM;
4822         }
4823
4824         fusion = instance->ctrl_context;
4825
4826         fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4827                                               sizeof(LD_SPAN_INFO));
4828         fusion->log_to_span =
4829                 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4830                                                 fusion->log_to_span_pages);
4831         if (!fusion->log_to_span) {
4832                 fusion->log_to_span = vzalloc(MAX_LOGICAL_DRIVES_EXT *
4833                                               sizeof(LD_SPAN_INFO));
4834                 if (!fusion->log_to_span) {
4835                         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4836                                 __func__, __LINE__);
4837                         return -ENOMEM;
4838                 }
4839         }
4840
4841         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4842                 sizeof(struct LD_LOAD_BALANCE_INFO));
4843         fusion->load_balance_info =
4844                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4845                 fusion->load_balance_info_pages);
4846         if (!fusion->load_balance_info) {
4847                 fusion->load_balance_info = vzalloc(MAX_LOGICAL_DRIVES_EXT *
4848                         sizeof(struct LD_LOAD_BALANCE_INFO));
4849                 if (!fusion->load_balance_info)
4850                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
4851                                 "continuing without Load Balance support\n");
4852         }
4853
4854         return 0;
4855 }
4856
4857 void
4858 megasas_free_fusion_context(struct megasas_instance *instance)
4859 {
4860         struct fusion_context *fusion = instance->ctrl_context;
4861
4862         if (fusion) {
4863                 if (fusion->load_balance_info) {
4864                         if (is_vmalloc_addr(fusion->load_balance_info))
4865                                 vfree(fusion->load_balance_info);
4866                         else
4867                                 free_pages((ulong)fusion->load_balance_info,
4868                                         fusion->load_balance_info_pages);
4869                 }
4870
4871                 if (fusion->log_to_span) {
4872                         if (is_vmalloc_addr(fusion->log_to_span))
4873                                 vfree(fusion->log_to_span);
4874                         else
4875                                 free_pages((ulong)fusion->log_to_span,
4876                                            fusion->log_to_span_pages);
4877                 }
4878
4879                 kfree(fusion);
4880         }
4881 }
4882
4883 struct megasas_instance_template megasas_instance_template_fusion = {
4884         .enable_intr = megasas_enable_intr_fusion,
4885         .disable_intr = megasas_disable_intr_fusion,
4886         .clear_intr = megasas_clear_intr_fusion,
4887         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
4888         .adp_reset = megasas_adp_reset_fusion,
4889         .check_reset = megasas_check_reset_fusion,
4890         .service_isr = megasas_isr_fusion,
4891         .tasklet = megasas_complete_cmd_dpc_fusion,
4892         .init_adapter = megasas_init_adapter_fusion,
4893         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
4894         .issue_dcmd = megasas_issue_dcmd_fusion,
4895 };