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                 kcalloc(max_mpt_cmd, sizeof(struct megasas_cmd_fusion *),
 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 | __GFP_NOWARN,
 534                                 &fusion->io_request_frames_phys);
 535         if (!fusion->io_request_frames) {
 536                 if (instance->max_fw_cmds >= (MEGASAS_REDUCE_QD_COUNT * 2)) {
 537                         instance->max_fw_cmds -= MEGASAS_REDUCE_QD_COUNT;
 538                         dma_pool_destroy(fusion->io_request_frames_pool);
 539                         megasas_configure_queue_sizes(instance);
 540                         goto retry_alloc;
 541                 } else {
 542                         dev_err(&instance->pdev->dev,
 543                                 "Failed from %s %d\n",  __func__, __LINE__);
 544                         return -ENOMEM;
 545                 }
 546         }
 547
 548         if (!megasas_check_same_4gb_region(instance,
 549                                            fusion->io_request_frames_phys,
 550                                            fusion->io_frames_alloc_sz)) {
 551                 dma_pool_free(fusion->io_request_frames_pool,
 552                               fusion->io_request_frames,
 553                               fusion->io_request_frames_phys);
 554                 fusion->io_request_frames = NULL;
 555                 dma_pool_destroy(fusion->io_request_frames_pool);
 556
 557                 fusion->io_request_frames_pool =
 558                         dma_pool_create("mr_ioreq_align",
 559                                         &instance->pdev->dev,
 560                                         fusion->io_frames_alloc_sz,
 561                                         roundup_pow_of_two(fusion->io_frames_alloc_sz),
 562                                         0);
 563
 564                 if (!fusion->io_request_frames_pool) {
 565                         dev_err(&instance->pdev->dev,
 566                                 "Failed from %s %d\n",  __func__, __LINE__);
 567                         return -ENOMEM;
 568                 }
 569
 570                 fusion->io_request_frames =
 571                         dma_pool_alloc(fusion->io_request_frames_pool,
 572                                        GFP_KERNEL | __GFP_NOWARN,
 573                                        &fusion->io_request_frames_phys);
 574
 575                 if (!fusion->io_request_frames) {
 576                         dev_err(&instance->pdev->dev,
 577                                 "Failed from %s %d\n",  __func__, __LINE__);
 578                         return -ENOMEM;
 579                 }
 580         }
 581
 582         fusion->req_frames_desc =
 583                 dma_alloc_coherent(&instance->pdev->dev,
 584                                    fusion->request_alloc_sz,
 585                                    &fusion->req_frames_desc_phys, GFP_KERNEL);
 586         if (!fusion->req_frames_desc) {
 587                 dev_err(&instance->pdev->dev,
 588                         "Failed from %s %d\n",  __func__, __LINE__);
 589                 return -ENOMEM;
 590         }
 591
 592         return 0;
 593 }
 594
 595 int
 596 megasas_alloc_reply_fusion(struct megasas_instance *instance)
 597 {
 598         int i, count;
 599         struct fusion_context *fusion;
 600         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 601         fusion = instance->ctrl_context;
 602
 603         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 604         fusion->reply_frames_desc_pool =
 605                         dma_pool_create("mr_reply", &instance->pdev->dev,
 606                                 fusion->reply_alloc_sz * count, 16, 0);
 607
 608         if (!fusion->reply_frames_desc_pool) {
 609                 dev_err(&instance->pdev->dev,
 610                         "Failed from %s %d\n",  __func__, __LINE__);
 611                 return -ENOMEM;
 612         }
 613
 614         fusion->reply_frames_desc[0] =
 615                 dma_pool_alloc(fusion->reply_frames_desc_pool,
 616                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
 617         if (!fusion->reply_frames_desc[0]) {
 618                 dev_err(&instance->pdev->dev,
 619                         "Failed from %s %d\n",  __func__, __LINE__);
 620                 return -ENOMEM;
 621         }
 622
 623         if (!megasas_check_same_4gb_region(instance,
 624                                            fusion->reply_frames_desc_phys[0],
 625                                            (fusion->reply_alloc_sz * count))) {
 626                 dma_pool_free(fusion->reply_frames_desc_pool,
 627                               fusion->reply_frames_desc[0],
 628                               fusion->reply_frames_desc_phys[0]);
 629                 fusion->reply_frames_desc[0] = NULL;
 630                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 631
 632                 fusion->reply_frames_desc_pool =
 633                         dma_pool_create("mr_reply_align",
 634                                         &instance->pdev->dev,
 635                                         fusion->reply_alloc_sz * count,
 636                                         roundup_pow_of_two(fusion->reply_alloc_sz * count),
 637                                         0);
 638
 639                 if (!fusion->reply_frames_desc_pool) {
 640                         dev_err(&instance->pdev->dev,
 641                                 "Failed from %s %d\n",  __func__, __LINE__);
 642                         return -ENOMEM;
 643                 }
 644
 645                 fusion->reply_frames_desc[0] =
 646                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 647                                        GFP_KERNEL,
 648                                        &fusion->reply_frames_desc_phys[0]);
 649
 650                 if (!fusion->reply_frames_desc[0]) {
 651                         dev_err(&instance->pdev->dev,
 652                                 "Failed from %s %d\n",  __func__, __LINE__);
 653                         return -ENOMEM;
 654                 }
 655         }
 656
 657         reply_desc = fusion->reply_frames_desc[0];
 658         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 659                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 660
 661         /* This is not a rdpq mode, but driver still populate
 662          * reply_frame_desc array to use same msix index in ISR path.
 663          */
 664         for (i = 0; i < (count - 1); i++)
 665                 fusion->reply_frames_desc[i + 1] =
 666                         fusion->reply_frames_desc[i] +
 667                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
 668
 669         return 0;
 670 }
 671
 672 int
 673 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 674 {
 675         int i, j, k, msix_count;
 676         struct fusion_context *fusion;
 677         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 678         union MPI2_REPLY_DESCRIPTORS_UNION *rdpq_chunk_virt[RDPQ_MAX_CHUNK_COUNT];
 679         dma_addr_t rdpq_chunk_phys[RDPQ_MAX_CHUNK_COUNT];
 680         u8 dma_alloc_count, abs_index;
 681         u32 chunk_size, array_size, offset;
 682
 683         fusion = instance->ctrl_context;
 684         chunk_size = fusion->reply_alloc_sz * RDPQ_MAX_INDEX_IN_ONE_CHUNK;
 685         array_size = sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) *
 686                      MAX_MSIX_QUEUES_FUSION;
 687
 688         fusion->rdpq_virt = pci_zalloc_consistent(instance->pdev, array_size,
 689                                                   &fusion->rdpq_phys);
 690         if (!fusion->rdpq_virt) {
 691                 dev_err(&instance->pdev->dev,
 692                         "Failed from %s %d\n",  __func__, __LINE__);
 693                 return -ENOMEM;
 694         }
 695
 696         msix_count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 697
 698         fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
 699                                                          &instance->pdev->dev,
 700                                                          chunk_size, 16, 0);
 701         fusion->reply_frames_desc_pool_align =
 702                                 dma_pool_create("mr_rdpq_align",
 703                                                 &instance->pdev->dev,
 704                                                 chunk_size,
 705                                                 roundup_pow_of_two(chunk_size),
 706                                                 0);
 707
 708         if (!fusion->reply_frames_desc_pool ||
 709             !fusion->reply_frames_desc_pool_align) {
 710                 dev_err(&instance->pdev->dev,
 711                         "Failed from %s %d\n",  __func__, __LINE__);
 712                 return -ENOMEM;
 713         }
 714
 715 /*
 716  * For INVADER_SERIES each set of 8 reply queues(0-7, 8-15, ..) and
 717  * VENTURA_SERIES each set of 16 reply queues(0-15, 16-31, ..) should be
 718  * within 4GB boundary and also reply queues in a set must have same
 719  * upper 32-bits in their memory address. so here driver is allocating the
 720  * DMA'able memory for reply queues according. Driver uses limitation of
 721  * VENTURA_SERIES to manage INVADER_SERIES as well.
 722  */
 723         dma_alloc_count = DIV_ROUND_UP(msix_count, RDPQ_MAX_INDEX_IN_ONE_CHUNK);
 724
 725         for (i = 0; i < dma_alloc_count; i++) {
 726                 rdpq_chunk_virt[i] =
 727                         dma_pool_alloc(fusion->reply_frames_desc_pool,
 728                                        GFP_KERNEL, &rdpq_chunk_phys[i]);
 729                 if (!rdpq_chunk_virt[i]) {
 730                         dev_err(&instance->pdev->dev,
 731                                 "Failed from %s %d\n",  __func__, __LINE__);
 732                         return -ENOMEM;
 733                 }
 734                 /* reply desc pool requires to be in same 4 gb region.
 735                  * Below function will check this.
 736                  * In case of failure, new pci pool will be created with updated
 737                  * alignment.
 738                  * For RDPQ buffers, driver always allocate two separate pci pool.
 739                  * Alignment will be used such a way that next allocation if
 740                  * success, will always meet same 4gb region requirement.
 741                  * rdpq_tracker keep track of each buffer's physical,
 742                  * virtual address and pci pool descriptor. It will help driver
 743                  * while freeing the resources.
 744                  *
 745                  */
 746                 if (!megasas_check_same_4gb_region(instance, rdpq_chunk_phys[i],
 747                                                    chunk_size)) {
 748                         dma_pool_free(fusion->reply_frames_desc_pool,
 749                                       rdpq_chunk_virt[i],
 750                                       rdpq_chunk_phys[i]);
 751
 752                         rdpq_chunk_virt[i] =
 753                                 dma_pool_alloc(fusion->reply_frames_desc_pool_align,
 754                                                GFP_KERNEL, &rdpq_chunk_phys[i]);
 755                         if (!rdpq_chunk_virt[i]) {
 756                                 dev_err(&instance->pdev->dev,
 757                                         "Failed from %s %d\n",
 758                                         __func__, __LINE__);
 759                                 return -ENOMEM;
 760                         }
 761                         fusion->rdpq_tracker[i].dma_pool_ptr =
 762                                         fusion->reply_frames_desc_pool_align;
 763                 } else {
 764                         fusion->rdpq_tracker[i].dma_pool_ptr =
 765                                         fusion->reply_frames_desc_pool;
 766                 }
 767
 768                 fusion->rdpq_tracker[i].pool_entry_phys = rdpq_chunk_phys[i];
 769                 fusion->rdpq_tracker[i].pool_entry_virt = rdpq_chunk_virt[i];
 770         }
 771
 772         for (k = 0; k < dma_alloc_count; k++) {
 773                 for (i = 0; i < RDPQ_MAX_INDEX_IN_ONE_CHUNK; i++) {
 774                         abs_index = (k * RDPQ_MAX_INDEX_IN_ONE_CHUNK) + i;
 775
 776                         if (abs_index == msix_count)
 777                                 break;
 778                         offset = fusion->reply_alloc_sz * i;
 779                         fusion->rdpq_virt[abs_index].RDPQBaseAddress =
 780                                         cpu_to_le64(rdpq_chunk_phys[k] + offset);
 781                         fusion->reply_frames_desc_phys[abs_index] =
 782                                         rdpq_chunk_phys[k] + offset;
 783                         fusion->reply_frames_desc[abs_index] =
 784                                         (union MPI2_REPLY_DESCRIPTORS_UNION *)((u8 *)rdpq_chunk_virt[k] + offset);
 785
 786                         reply_desc = fusion->reply_frames_desc[abs_index];
 787                         for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
 788                                 reply_desc->Words = ULLONG_MAX;
 789                 }
 790         }
 791
 792         return 0;
 793 }
 794
 795 static void
 796 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 797
 798         int i;
 799         struct fusion_context *fusion;
 800
 801         fusion = instance->ctrl_context;
 802
 803         for (i = 0; i < RDPQ_MAX_CHUNK_COUNT; i++) {
 804                 if (fusion->rdpq_tracker[i].pool_entry_virt)
 805                         dma_pool_free(fusion->rdpq_tracker[i].dma_pool_ptr,
 806                                       fusion->rdpq_tracker[i].pool_entry_virt,
 807                                       fusion->rdpq_tracker[i].pool_entry_phys);
 808
 809         }
 810
 811         if (fusion->reply_frames_desc_pool)
 812                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 813         if (fusion->reply_frames_desc_pool_align)
 814                 dma_pool_destroy(fusion->reply_frames_desc_pool_align);
 815
 816         if (fusion->rdpq_virt)
 817                 pci_free_consistent(instance->pdev,
 818                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 819                         fusion->rdpq_virt, fusion->rdpq_phys);
 820 }
 821
 822 static void
 823 megasas_free_reply_fusion(struct megasas_instance *instance) {
 824
 825         struct fusion_context *fusion;
 826
 827         fusion = instance->ctrl_context;
 828
 829         if (fusion->reply_frames_desc[0])
 830                 dma_pool_free(fusion->reply_frames_desc_pool,
 831                         fusion->reply_frames_desc[0],
 832                         fusion->reply_frames_desc_phys[0]);
 833
 834         if (fusion->reply_frames_desc_pool)
 835                 dma_pool_destroy(fusion->reply_frames_desc_pool);
 836
 837 }
 838
 839
 840 /**
 841  * megasas_alloc_cmds_fusion -  Allocates the command packets
 842  * @instance:           Adapter soft state
 843  *
 844  *
 845  * Each frame has a 32-bit field called context. This context is used to get
 846  * back the megasas_cmd_fusion from the frame when a frame gets completed
 847  * In this driver, the 32 bit values are the indices into an array cmd_list.
 848  * This array is used only to look up the megasas_cmd_fusion given the context.
 849  * The free commands themselves are maintained in a linked list called cmd_pool.
 850  *
 851  * cmds are formed in the io_request and sg_frame members of the
 852  * megasas_cmd_fusion. The context field is used to get a request descriptor
 853  * and is used as SMID of the cmd.
 854  * SMID value range is from 1 to max_fw_cmds.
 855  */
 856 int
 857 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 858 {
 859         int i;
 860         struct fusion_context *fusion;
 861         struct megasas_cmd_fusion *cmd;
 862         u32 offset;
 863         dma_addr_t io_req_base_phys;
 864         u8 *io_req_base;
 865
 866
 867         fusion = instance->ctrl_context;
 868
 869         if (megasas_alloc_request_fusion(instance))
 870                 goto fail_exit;
 871
 872         if (instance->is_rdpq) {
 873                 if (megasas_alloc_rdpq_fusion(instance))
 874                         goto fail_exit;
 875         } else
 876                 if (megasas_alloc_reply_fusion(instance))
 877                         goto fail_exit;
 878
 879         if (megasas_alloc_cmdlist_fusion(instance))
 880                 goto fail_exit;
 881
 882         dev_info(&instance->pdev->dev, "Configured max firmware commands: %d\n",
 883                  instance->max_fw_cmds);
 884
 885         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 886         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 887         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 888
 889         /*
 890          * Add all the commands to command pool (fusion->cmd_pool)
 891          */
 892
 893         /* SMID 0 is reserved. Set SMID/index from 1 */
 894         for (i = 0; i < instance->max_mpt_cmds; i++) {
 895                 cmd = fusion->cmd_list[i];
 896                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
 897                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
 898                 cmd->index = i + 1;
 899                 cmd->scmd = NULL;
 900                 cmd->sync_cmd_idx =
 901                 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
 902                                 (i - instance->max_scsi_cmds) :
 903                                 (u32)ULONG_MAX; /* Set to Invalid */
 904                 cmd->instance = instance;
 905                 cmd->io_request =
 906                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
 907                   (io_req_base + offset);
 908                 memset(cmd->io_request, 0,
 909                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 910                 cmd->io_request_phys_addr = io_req_base_phys + offset;
 911                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 912         }
 913
 914         if (megasas_create_sg_sense_fusion(instance))
 915                 goto fail_exit;
 916
 917         return 0;
 918
 919 fail_exit:
 920         megasas_free_cmds_fusion(instance);
 921         return -ENOMEM;
 922 }
 923
 924 /**
 925  * wait_and_poll -      Issues a polling command
 926  * @instance:                   Adapter soft state
 927  * @cmd:                        Command packet to be issued
 928  *
 929  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 930  */
 931 int
 932 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 933         int seconds)
 934 {
 935         int i;
 936         struct megasas_header *frame_hdr = &cmd->frame->hdr;
 937         struct fusion_context *fusion;
 938
 939         u32 msecs = seconds * 1000;
 940
 941         fusion = instance->ctrl_context;
 942         /*
 943          * Wait for cmd_status to change
 944          */
 945         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
 946                 rmb();
 947                 msleep(20);
 948         }
 949
 950         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
 951                 return DCMD_TIMEOUT;
 952         else if (frame_hdr->cmd_status == MFI_STAT_OK)
 953                 return DCMD_SUCCESS;
 954         else
 955                 return DCMD_FAILED;
 956 }
 957
 958 /**
 959  * megasas_ioc_init_fusion -    Initializes the FW
 960  * @instance:           Adapter soft state
 961  *
 962  * Issues the IOC Init cmd
 963  */
 964 int
 965 megasas_ioc_init_fusion(struct megasas_instance *instance)
 966 {
 967         struct megasas_init_frame *init_frame;
 968         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
 969         dma_addr_t      ioc_init_handle;
 970         struct megasas_cmd *cmd;
 971         u8 ret, cur_rdpq_mode;
 972         struct fusion_context *fusion;
 973         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
 974         int i;
 975         struct megasas_header *frame_hdr;
 976         const char *sys_info;
 977         MFI_CAPABILITIES *drv_ops;
 978         u32 scratch_pad_2;
 979         ktime_t time;
 980         bool cur_fw_64bit_dma_capable;
 981
 982         fusion = instance->ctrl_context;
 983
 984         ioc_init_handle = fusion->ioc_init_request_phys;
 985         IOCInitMessage = fusion->ioc_init_request;
 986
 987         cmd = fusion->ioc_init_cmd;
 988
 989         scratch_pad_2 = readl
 990                 (&instance->reg_set->outbound_scratch_pad_2);
 991
 992         cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
 993
 994         if (instance->adapter_type == INVADER_SERIES) {
 995                 cur_fw_64bit_dma_capable =
 996                         (scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET) ? true : false;
 997
 998                 if (instance->consistent_mask_64bit && !cur_fw_64bit_dma_capable) {
 999                         dev_err(&instance->pdev->dev, "Driver was operating on 64bit "
1000                                 "DMA mask, but upcoming FW does not support 64bit DMA mask\n");
1001                         megaraid_sas_kill_hba(instance);
1002                         ret = 1;
1003                         goto fail_fw_init;
1004                 }
1005         }
1006
1007         if (instance->is_rdpq && !cur_rdpq_mode) {
1008                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
1009                         " from RDPQ mode to non RDPQ mode\n");
1010                 ret = 1;
1011                 goto fail_fw_init;
1012         }
1013
1014         instance->fw_sync_cache_support = (scratch_pad_2 &
1015                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
1016         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
1017                  instance->fw_sync_cache_support ? "Yes" : "No");
1018
1019         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
1020
1021         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
1022         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
1023         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
1024         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
1025         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
1026
1027         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
1028         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
1029                         cpu_to_le64(fusion->rdpq_phys) :
1030                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
1031         IOCInitMessage->MsgFlags = instance->is_rdpq ?
1032                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
1033         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
1034         IOCInitMessage->SenseBufferAddressHigh = cpu_to_le32(upper_32_bits(fusion->sense_phys_addr));
1035         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
1036         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
1037
1038         time = ktime_get_real();
1039         /* Convert to milliseconds as per FW requirement */
1040         IOCInitMessage->TimeStamp = cpu_to_le64(ktime_to_ms(time));
1041
1042         init_frame = (struct megasas_init_frame *)cmd->frame;
1043         memset(init_frame, 0, IOC_INIT_FRAME_SIZE);
1044
1045         frame_hdr = &cmd->frame->hdr;
1046         frame_hdr->cmd_status = 0xFF;
1047         frame_hdr->flags = cpu_to_le16(
1048                 le16_to_cpu(frame_hdr->flags) |
1049                 MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1050
1051         init_frame->cmd = MFI_CMD_INIT;
1052         init_frame->cmd_status = 0xFF;
1053
1054         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
1055
1056         /* driver support Extended MSIX */
1057         if (instance->adapter_type >= INVADER_SERIES)
1058                 drv_ops->mfi_capabilities.support_additional_msix = 1;
1059         /* driver supports HA / Remote LUN over Fast Path interface */
1060         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
1061
1062         drv_ops->mfi_capabilities.support_max_255lds = 1;
1063         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
1064         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
1065
1066         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
1067                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
1068
1069         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
1070         if (!dual_qdepth_disable)
1071                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
1072
1073         drv_ops->mfi_capabilities.support_qd_throttling = 1;
1074         drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
1075         drv_ops->mfi_capabilities.support_nvme_passthru = 1;
1076
1077         if (instance->consistent_mask_64bit)
1078                 drv_ops->mfi_capabilities.support_64bit_mode = 1;
1079
1080         /* Convert capability to LE32 */
1081         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
1082
1083         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
1084         if (instance->system_info_buf && sys_info) {
1085                 memcpy(instance->system_info_buf->systemId, sys_info,
1086                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
1087                 instance->system_info_buf->systemIdLength =
1088                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
1089                 init_frame->system_info_lo = cpu_to_le32(lower_32_bits(instance->system_info_h));
1090                 init_frame->system_info_hi = cpu_to_le32(upper_32_bits(instance->system_info_h));
1091         }
1092
1093         init_frame->queue_info_new_phys_addr_hi =
1094                 cpu_to_le32(upper_32_bits(ioc_init_handle));
1095         init_frame->queue_info_new_phys_addr_lo =
1096                 cpu_to_le32(lower_32_bits(ioc_init_handle));
1097         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
1098
1099         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
1100         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
1101         req_desc.MFAIo.RequestFlags =
1102                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
1103                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1104
1105         /*
1106          * disable the intr before firing the init frame
1107          */
1108         instance->instancet->disable_intr(instance);
1109
1110         for (i = 0; i < (10 * 1000); i += 20) {
1111                 if (readl(&instance->reg_set->doorbell) & 1)
1112                         msleep(20);
1113                 else
1114                         break;
1115         }
1116
1117         megasas_fire_cmd_fusion(instance, &req_desc);
1118
1119         wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
1120
1121         frame_hdr = &cmd->frame->hdr;
1122         if (frame_hdr->cmd_status != 0) {
1123                 ret = 1;
1124                 goto fail_fw_init;
1125         }
1126
1127         return 0;
1128
1129 fail_fw_init:
1130         dev_err(&instance->pdev->dev,
1131                 "Init cmd return status FAILED for SCSI host %d\n",
1132                 instance->host->host_no);
1133
1134         return ret;
1135 }
1136
1137 /**
1138  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
1139  * @instance:           Adapter soft state
1140  * @pend:               set to 1, if it is pended jbod map.
1141  *
1142  * Issue Jbod map to the firmware. If it is pended command,
1143  * issue command and return. If it is first instance of jbod map
1144  * issue and receive command.
1145  */
1146 int
1147 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
1148         int ret = 0;
1149         u32 pd_seq_map_sz;
1150         struct megasas_cmd *cmd;
1151         struct megasas_dcmd_frame *dcmd;
1152         struct fusion_context *fusion = instance->ctrl_context;
1153         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1154         dma_addr_t pd_seq_h;
1155
1156         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
1157         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
1158         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
1159                         (sizeof(struct MR_PD_CFG_SEQ) *
1160                         (MAX_PHYSICAL_DEVICES - 1));
1161
1162         cmd = megasas_get_cmd(instance);
1163         if (!cmd) {
1164                 dev_err(&instance->pdev->dev,
1165                         "Could not get mfi cmd. Fail from %s %d\n",
1166                         __func__, __LINE__);
1167                 return -ENOMEM;
1168         }
1169
1170         dcmd = &cmd->frame->dcmd;
1171
1172         memset(pd_sync, 0, pd_seq_map_sz);
1173         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1174
1175         if (pend) {
1176                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1177                 dcmd->flags = MFI_FRAME_DIR_WRITE;
1178                 instance->jbod_seq_cmd = cmd;
1179         } else {
1180                 dcmd->flags = MFI_FRAME_DIR_READ;
1181         }
1182
1183         dcmd->cmd = MFI_CMD_DCMD;
1184         dcmd->cmd_status = 0xFF;
1185         dcmd->sge_count = 1;
1186         dcmd->timeout = 0;
1187         dcmd->pad_0 = 0;
1188         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
1189         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
1190
1191         megasas_set_dma_settings(instance, dcmd, pd_seq_h, pd_seq_map_sz);
1192
1193         if (pend) {
1194                 instance->instancet->issue_dcmd(instance, cmd);
1195                 return 0;
1196         }
1197
1198         /* Below code is only for non pended DCMD */
1199         if (!instance->mask_interrupts)
1200                 ret = megasas_issue_blocked_cmd(instance, cmd,
1201                         MFI_IO_TIMEOUT_SECS);
1202         else
1203                 ret = megasas_issue_polled(instance, cmd);
1204
1205         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
1206                 dev_warn(&instance->pdev->dev,
1207                         "driver supports max %d JBOD, but FW reports %d\n",
1208                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
1209                 ret = -EINVAL;
1210         }
1211
1212         if (ret == DCMD_TIMEOUT)
1213                 megaraid_sas_kill_hba(instance);
1214
1215         if (ret == DCMD_SUCCESS)
1216                 instance->pd_seq_map_id++;
1217
1218         megasas_return_cmd(instance, cmd);
1219         return ret;
1220 }
1221
1222 /*
1223  * megasas_get_ld_map_info -    Returns FW's ld_map structure
1224  * @instance:                           Adapter soft state
1225  * @pend:                               Pend the command or not
1226  * Issues an internal command (DCMD) to get the FW's controller PD
1227  * list structure.  This information is mainly used to find out SYSTEM
1228  * supported by the FW.
1229  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1230  * dcmd.mbox.b[0]       - number of LDs being sync'd
1231  * dcmd.mbox.b[1]       - 0 - complete command immediately.
1232  *                      - 1 - pend till config change
1233  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1234  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1235  *                              uses extended struct MR_FW_RAID_MAP_EXT
1236  */
1237 static int
1238 megasas_get_ld_map_info(struct megasas_instance *instance)
1239 {
1240         int ret = 0;
1241         struct megasas_cmd *cmd;
1242         struct megasas_dcmd_frame *dcmd;
1243         void *ci;
1244         dma_addr_t ci_h = 0;
1245         u32 size_map_info;
1246         struct fusion_context *fusion;
1247
1248         cmd = megasas_get_cmd(instance);
1249
1250         if (!cmd) {
1251                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1252                 return -ENOMEM;
1253         }
1254
1255         fusion = instance->ctrl_context;
1256
1257         if (!fusion) {
1258                 megasas_return_cmd(instance, cmd);
1259                 return -ENXIO;
1260         }
1261
1262         dcmd = &cmd->frame->dcmd;
1263
1264         size_map_info = fusion->current_map_sz;
1265
1266         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1267         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1268
1269         if (!ci) {
1270                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1271                 megasas_return_cmd(instance, cmd);
1272                 return -ENOMEM;
1273         }
1274
1275         memset(ci, 0, fusion->max_map_sz);
1276         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1277         dcmd->cmd = MFI_CMD_DCMD;
1278         dcmd->cmd_status = 0xFF;
1279         dcmd->sge_count = 1;
1280         dcmd->flags = MFI_FRAME_DIR_READ;
1281         dcmd->timeout = 0;
1282         dcmd->pad_0 = 0;
1283         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1284         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1285
1286         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1287
1288         if (!instance->mask_interrupts)
1289                 ret = megasas_issue_blocked_cmd(instance, cmd,
1290                         MFI_IO_TIMEOUT_SECS);
1291         else
1292                 ret = megasas_issue_polled(instance, cmd);
1293
1294         if (ret == DCMD_TIMEOUT)
1295                 megaraid_sas_kill_hba(instance);
1296
1297         megasas_return_cmd(instance, cmd);
1298
1299         return ret;
1300 }
1301
1302 u8
1303 megasas_get_map_info(struct megasas_instance *instance)
1304 {
1305         struct fusion_context *fusion = instance->ctrl_context;
1306
1307         fusion->fast_path_io = 0;
1308         if (!megasas_get_ld_map_info(instance)) {
1309                 if (MR_ValidateMapInfo(instance, instance->map_id)) {
1310                         fusion->fast_path_io = 1;
1311                         return 0;
1312                 }
1313         }
1314         return 1;
1315 }
1316
1317 /*
1318  * megasas_sync_map_info -      Returns FW's ld_map structure
1319  * @instance:                           Adapter soft state
1320  *
1321  * Issues an internal command (DCMD) to get the FW's controller PD
1322  * list structure.  This information is mainly used to find out SYSTEM
1323  * supported by the FW.
1324  */
1325 int
1326 megasas_sync_map_info(struct megasas_instance *instance)
1327 {
1328         int i;
1329         struct megasas_cmd *cmd;
1330         struct megasas_dcmd_frame *dcmd;
1331         u16 num_lds;
1332         u32 size_sync_info;
1333         struct fusion_context *fusion;
1334         struct MR_LD_TARGET_SYNC *ci = NULL;
1335         struct MR_DRV_RAID_MAP_ALL *map;
1336         struct MR_LD_RAID  *raid;
1337         struct MR_LD_TARGET_SYNC *ld_sync;
1338         dma_addr_t ci_h = 0;
1339         u32 size_map_info;
1340
1341         cmd = megasas_get_cmd(instance);
1342
1343         if (!cmd) {
1344                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1345                 return -ENOMEM;
1346         }
1347
1348         fusion = instance->ctrl_context;
1349
1350         if (!fusion) {
1351                 megasas_return_cmd(instance, cmd);
1352                 return 1;
1353         }
1354
1355         map = fusion->ld_drv_map[instance->map_id & 1];
1356
1357         num_lds = le16_to_cpu(map->raidMap.ldCount);
1358
1359         dcmd = &cmd->frame->dcmd;
1360
1361         size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
1362
1363         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1364
1365         ci = (struct MR_LD_TARGET_SYNC *)
1366           fusion->ld_map[(instance->map_id - 1) & 1];
1367         memset(ci, 0, fusion->max_map_sz);
1368
1369         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1370
1371         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1372
1373         for (i = 0; i < num_lds; i++, ld_sync++) {
1374                 raid = MR_LdRaidGet(i, map);
1375                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1376                 ld_sync->seqNum = raid->seqNum;
1377         }
1378
1379         size_map_info = fusion->current_map_sz;
1380
1381         dcmd->cmd = MFI_CMD_DCMD;
1382         dcmd->cmd_status = 0xFF;
1383         dcmd->sge_count = 1;
1384         dcmd->flags = MFI_FRAME_DIR_WRITE;
1385         dcmd->timeout = 0;
1386         dcmd->pad_0 = 0;
1387         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1388         dcmd->mbox.b[0] = num_lds;
1389         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1390         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1391
1392         megasas_set_dma_settings(instance, dcmd, ci_h, size_map_info);
1393
1394         instance->map_update_cmd = cmd;
1395
1396         instance->instancet->issue_dcmd(instance, cmd);
1397
1398         return 0;
1399 }
1400
1401 /*
1402  * meagasas_display_intel_branding - Display branding string
1403  * @instance: per adapter object
1404  *
1405  * Return nothing.
1406  */
1407 static void
1408 megasas_display_intel_branding(struct megasas_instance *instance)
1409 {
1410         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1411                 return;
1412
1413         switch (instance->pdev->device) {
1414         case PCI_DEVICE_ID_LSI_INVADER:
1415                 switch (instance->pdev->subsystem_device) {
1416                 case MEGARAID_INTEL_RS3DC080_SSDID:
1417                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1418                                 instance->host->host_no,
1419                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1420                         break;
1421                 case MEGARAID_INTEL_RS3DC040_SSDID:
1422                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1423                                 instance->host->host_no,
1424                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1425                         break;
1426                 case MEGARAID_INTEL_RS3SC008_SSDID:
1427                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1428                                 instance->host->host_no,
1429                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1430                         break;
1431                 case MEGARAID_INTEL_RS3MC044_SSDID:
1432                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1433                                 instance->host->host_no,
1434                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1435                         break;
1436                 default:
1437                         break;
1438                 }
1439                 break;
1440         case PCI_DEVICE_ID_LSI_FURY:
1441                 switch (instance->pdev->subsystem_device) {
1442                 case MEGARAID_INTEL_RS3WC080_SSDID:
1443                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1444                                 instance->host->host_no,
1445                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1446                         break;
1447                 case MEGARAID_INTEL_RS3WC040_SSDID:
1448                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1449                                 instance->host->host_no,
1450                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1451                         break;
1452                 default:
1453                         break;
1454                 }
1455                 break;
1456         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1457         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1458                 switch (instance->pdev->subsystem_device) {
1459                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1460                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1461                                 instance->host->host_no,
1462                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1463                         break;
1464                 default:
1465                         break;
1466                 }
1467                 break;
1468         default:
1469                 break;
1470         }
1471 }
1472
1473 /**
1474  * megasas_allocate_raid_maps - Allocate memory for RAID maps
1475  * @instance:                           Adapter soft state
1476  *
1477  * return:                              if success: return 0
1478  *                                      failed:  return -ENOMEM
1479  */
1480 static inline int megasas_allocate_raid_maps(struct megasas_instance *instance)
1481 {
1482         struct fusion_context *fusion;
1483         int i = 0;
1484
1485         fusion = instance->ctrl_context;
1486
1487         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1488
1489         for (i = 0; i < 2; i++) {
1490                 fusion->ld_map[i] = NULL;
1491
1492                 fusion->ld_drv_map[i] = (void *)
1493                         __get_free_pages(__GFP_ZERO | GFP_KERNEL,
1494                                          fusion->drv_map_pages);
1495
1496                 if (!fusion->ld_drv_map[i]) {
1497                         fusion->ld_drv_map[i] = vzalloc(fusion->drv_map_sz);
1498
1499                         if (!fusion->ld_drv_map[i]) {
1500                                 dev_err(&instance->pdev->dev,
1501                                         "Could not allocate memory for local map"
1502                                         " size requested: %d\n",
1503                                         fusion->drv_map_sz);
1504                                 goto ld_drv_map_alloc_fail;
1505                         }
1506                 }
1507         }
1508
1509         for (i = 0; i < 2; i++) {
1510                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1511                                                        fusion->max_map_sz,
1512                                                        &fusion->ld_map_phys[i],
1513                                                        GFP_KERNEL);
1514                 if (!fusion->ld_map[i]) {
1515                         dev_err(&instance->pdev->dev,
1516                                 "Could not allocate memory for map info %s:%d\n",
1517                                 __func__, __LINE__);
1518                         goto ld_map_alloc_fail;
1519                 }
1520         }
1521
1522         return 0;
1523
1524 ld_map_alloc_fail:
1525         for (i = 0; i < 2; i++) {
1526                 if (fusion->ld_map[i])
1527                         dma_free_coherent(&instance->pdev->dev,
1528                                           fusion->max_map_sz,
1529                                           fusion->ld_map[i],
1530                                           fusion->ld_map_phys[i]);
1531         }
1532
1533 ld_drv_map_alloc_fail:
1534         for (i = 0; i < 2; i++) {
1535                 if (fusion->ld_drv_map[i]) {
1536                         if (is_vmalloc_addr(fusion->ld_drv_map[i]))
1537                                 vfree(fusion->ld_drv_map[i]);
1538                         else
1539                                 free_pages((ulong)fusion->ld_drv_map[i],
1540                                            fusion->drv_map_pages);
1541                 }
1542         }
1543
1544         return -ENOMEM;
1545 }
1546
1547 /**
1548  * megasas_configure_queue_sizes -      Calculate size of request desc queue,
1549  *                                      reply desc queue,
1550  *                                      IO request frame queue, set can_queue.
1551  * @instance:                           Adapter soft state
1552  * @return:                             void
1553  */
1554 static inline
1555 void megasas_configure_queue_sizes(struct megasas_instance *instance)
1556 {
1557         struct fusion_context *fusion;
1558         u16 max_cmd;
1559
1560         fusion = instance->ctrl_context;
1561         max_cmd = instance->max_fw_cmds;
1562
1563         if (instance->adapter_type == VENTURA_SERIES)
1564                 instance->max_mpt_cmds = instance->max_fw_cmds * RAID_1_PEER_CMDS;
1565         else
1566                 instance->max_mpt_cmds = instance->max_fw_cmds;
1567
1568         instance->max_scsi_cmds = instance->max_fw_cmds -
1569                         (MEGASAS_FUSION_INTERNAL_CMDS +
1570                         MEGASAS_FUSION_IOCTL_CMDS);
1571         instance->cur_can_queue = instance->max_scsi_cmds;
1572         instance->host->can_queue = instance->cur_can_queue;
1573
1574         fusion->reply_q_depth = 2 * ((max_cmd + 1 + 15) / 16) * 16;
1575
1576         fusion->request_alloc_sz = sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *
1577                                           instance->max_mpt_cmds;
1578         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION) *
1579                                         (fusion->reply_q_depth);
1580         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1581                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1582                  * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1583 }
1584
1585 static int megasas_alloc_ioc_init_frame(struct megasas_instance *instance)
1586 {
1587         struct fusion_context *fusion;
1588         struct megasas_cmd *cmd;
1589
1590         fusion = instance->ctrl_context;
1591
1592         cmd = kzalloc(sizeof(struct megasas_cmd), GFP_KERNEL);
1593
1594         if (!cmd) {
1595                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1596                         __func__, __LINE__);
1597                 return -ENOMEM;
1598         }
1599
1600         cmd->frame = dma_alloc_coherent(&instance->pdev->dev,
1601                                         IOC_INIT_FRAME_SIZE,
1602                                         &cmd->frame_phys_addr, GFP_KERNEL);
1603
1604         if (!cmd->frame) {
1605                 dev_err(&instance->pdev->dev, "Failed from func: %s line: %d\n",
1606                         __func__, __LINE__);
1607                 kfree(cmd);
1608                 return -ENOMEM;
1609         }
1610
1611         fusion->ioc_init_cmd = cmd;
1612         return 0;
1613 }
1614
1615 /**
1616  * megasas_free_ioc_init_cmd -  Free IOC INIT command frame
1617  * @instance:           Adapter soft state
1618  */
1619 static inline void megasas_free_ioc_init_cmd(struct megasas_instance *instance)
1620 {
1621         struct fusion_context *fusion;
1622
1623         fusion = instance->ctrl_context;
1624
1625         if (fusion->ioc_init_cmd && fusion->ioc_init_cmd->frame)
1626                 dma_free_coherent(&instance->pdev->dev,
1627                                   IOC_INIT_FRAME_SIZE,
1628                                   fusion->ioc_init_cmd->frame,
1629                                   fusion->ioc_init_cmd->frame_phys_addr);
1630
1631         if (fusion->ioc_init_cmd)
1632                 kfree(fusion->ioc_init_cmd);
1633 }
1634
1635 /**
1636  * megasas_init_adapter_fusion -        Initializes the FW
1637  * @instance:           Adapter soft state
1638  *
1639  * This is the main function for initializing firmware.
1640  */
1641 u32
1642 megasas_init_adapter_fusion(struct megasas_instance *instance)
1643 {
1644         struct megasas_register_set __iomem *reg_set;
1645         struct fusion_context *fusion;
1646         u32 scratch_pad_2;
1647         int i = 0, count;
1648
1649         fusion = instance->ctrl_context;
1650
1651         reg_set = instance->reg_set;
1652
1653         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1654
1655         /*
1656          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1657          */
1658         instance->max_mfi_cmds =
1659                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1660
1661         megasas_configure_queue_sizes(instance);
1662
1663         scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2);
1664         /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1665          * Firmware support extended IO chain frame which is 4 times more than
1666          * legacy Firmware.
1667          * Legacy Firmware - Frame size is (8 * 128) = 1K
1668          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1669          */
1670         if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1671                 instance->max_chain_frame_sz =
1672                         ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1673                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1674         else
1675                 instance->max_chain_frame_sz =
1676                         ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1677                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1678
1679         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1680                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1681                         instance->max_chain_frame_sz,
1682                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1683                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1684         }
1685
1686         fusion->max_sge_in_main_msg =
1687                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1688                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1689
1690         fusion->max_sge_in_chain =
1691                 instance->max_chain_frame_sz
1692                         / sizeof(union MPI2_SGE_IO_UNION);
1693
1694         instance->max_num_sge =
1695                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1696                         + fusion->max_sge_in_chain - 2);
1697
1698         /* Used for pass thru MFI frame (DCMD) */
1699         fusion->chain_offset_mfi_pthru =
1700                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1701
1702         fusion->chain_offset_io_request =
1703                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1704                  sizeof(union MPI2_SGE_IO_UNION))/16;
1705
1706         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1707         for (i = 0 ; i < count; i++)
1708                 fusion->last_reply_idx[i] = 0;
1709
1710         /*
1711          * For fusion adapters, 3 commands for IOCTL and 8 commands
1712          * for driver's internal DCMDs.
1713          */
1714         instance->max_scsi_cmds = instance->max_fw_cmds -
1715                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1716                                 MEGASAS_FUSION_IOCTL_CMDS);
1717         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1718
1719         if (megasas_alloc_ioc_init_frame(instance))
1720                 return 1;
1721
1722         /*
1723          * Allocate memory for descriptors
1724          * Create a pool of commands
1725          */
1726         if (megasas_alloc_cmds(instance))
1727                 goto fail_alloc_mfi_cmds;
1728         if (megasas_alloc_cmds_fusion(instance))
1729                 goto fail_alloc_cmds;
1730
1731         if (megasas_ioc_init_fusion(instance))
1732                 goto fail_ioc_init;
1733
1734         megasas_display_intel_branding(instance);
1735         if (megasas_get_ctrl_info(instance)) {
1736                 dev_err(&instance->pdev->dev,
1737                         "Could not get controller info. Fail from %s %d\n",
1738                         __func__, __LINE__);
1739                 goto fail_ioc_init;
1740         }
1741
1742         instance->flag_ieee = 1;
1743         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1744         fusion->fast_path_io = 0;
1745
1746         if (megasas_allocate_raid_maps(instance))
1747                 goto fail_ioc_init;
1748
1749         if (!megasas_get_map_info(instance))
1750                 megasas_sync_map_info(instance);
1751
1752         return 0;
1753
1754 fail_ioc_init:
1755         megasas_free_cmds_fusion(instance);
1756 fail_alloc_cmds:
1757         megasas_free_cmds(instance);
1758 fail_alloc_mfi_cmds:
1759         megasas_free_ioc_init_cmd(instance);
1760         return 1;
1761 }
1762
1763 /**
1764  * map_cmd_status -     Maps FW cmd status to OS cmd status
1765  * @cmd :               Pointer to cmd
1766  * @status :            status of cmd returned by FW
1767  * @ext_status :        ext status of cmd returned by FW
1768  */
1769
1770 void
1771 map_cmd_status(struct fusion_context *fusion,
1772                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1773                 u32 data_length, u8 *sense)
1774 {
1775         u8 cmd_type;
1776         int resid;
1777
1778         cmd_type = megasas_cmd_type(scmd);
1779         switch (status) {
1780
1781         case MFI_STAT_OK:
1782                 scmd->result = DID_OK << 16;
1783                 break;
1784
1785         case MFI_STAT_SCSI_IO_FAILED:
1786         case MFI_STAT_LD_INIT_IN_PROGRESS:
1787                 scmd->result = (DID_ERROR << 16) | ext_status;
1788                 break;
1789
1790         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1791
1792                 scmd->result = (DID_OK << 16) | ext_status;
1793                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1794                         memset(scmd->sense_buffer, 0,
1795                                SCSI_SENSE_BUFFERSIZE);
1796                         memcpy(scmd->sense_buffer, sense,
1797                                SCSI_SENSE_BUFFERSIZE);
1798                         scmd->result |= DRIVER_SENSE << 24;
1799                 }
1800
1801                 /*
1802                  * If the  IO request is partially completed, then MR FW will
1803                  * update "io_request->DataLength" field with actual number of
1804                  * bytes transferred.Driver will set residual bytes count in
1805                  * SCSI command structure.
1806                  */
1807                 resid = (scsi_bufflen(scmd) - data_length);
1808                 scsi_set_resid(scmd, resid);
1809
1810                 if (resid &&
1811                         ((cmd_type == READ_WRITE_LDIO) ||
1812                         (cmd_type == READ_WRITE_SYSPDIO)))
1813                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
1814                                 " requested/completed 0x%x/0x%x\n",
1815                                 status, scsi_bufflen(scmd), data_length);
1816                 break;
1817
1818         case MFI_STAT_LD_OFFLINE:
1819         case MFI_STAT_DEVICE_NOT_FOUND:
1820                 scmd->result = DID_BAD_TARGET << 16;
1821                 break;
1822         case MFI_STAT_CONFIG_SEQ_MISMATCH:
1823                 scmd->result = DID_IMM_RETRY << 16;
1824                 break;
1825         default:
1826                 scmd->result = DID_ERROR << 16;
1827                 break;
1828         }
1829 }
1830
1831 /**
1832  * megasas_is_prp_possible -
1833  * Checks if native NVMe PRPs can be built for the IO
1834  *
1835  * @instance:           Adapter soft state
1836  * @scmd:               SCSI command from the mid-layer
1837  * @sge_count:          scatter gather element count.
1838  *
1839  * Returns:             true: PRPs can be built
1840  *                      false: IEEE SGLs needs to be built
1841  */
1842 static bool
1843 megasas_is_prp_possible(struct megasas_instance *instance,
1844                         struct scsi_cmnd *scmd, int sge_count)
1845 {
1846         struct fusion_context *fusion;
1847         int i;
1848         u32 data_length = 0;
1849         struct scatterlist *sg_scmd;
1850         bool build_prp = false;
1851         u32 mr_nvme_pg_size;
1852
1853         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1854                                 MR_DEFAULT_NVME_PAGE_SIZE);
1855         fusion = instance->ctrl_context;
1856         data_length = scsi_bufflen(scmd);
1857         sg_scmd = scsi_sglist(scmd);
1858
1859         /*
1860          * NVMe uses one PRP for each page (or part of a page)
1861          * look at the data length - if 4 pages or less then IEEE is OK
1862          * if  > 5 pages then we need to build a native SGL
1863          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
1864          * if this first size in the page is >= the residual beyond 4 pages
1865          * then use IEEE, otherwise use native SGL
1866          */
1867
1868         if (data_length > (mr_nvme_pg_size * 5)) {
1869                 build_prp = true;
1870         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
1871                         (data_length <= (mr_nvme_pg_size * 5)))  {
1872                 /* check if 1st SG entry size is < residual beyond 4 pages */
1873                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
1874                         build_prp = true;
1875         }
1876
1877 /*
1878  * Below code detects gaps/holes in IO data buffers.
1879  * What does holes/gaps mean?
1880  * Any SGE except first one in a SGL starts at non NVME page size
1881  * aligned address OR Any SGE except last one in a SGL ends at
1882  * non NVME page size boundary.
1883  *
1884  * Driver has already informed block layer by setting boundary rules for
1885  * bio merging done at NVME page size boundary calling kernel API
1886  * blk_queue_virt_boundary inside slave_config.
1887  * Still there is possibility of IO coming with holes to driver because of
1888  * IO merging done by IO scheduler.
1889  *
1890  * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
1891  * IO scheduling so no IO merging.
1892  *
1893  * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
1894  * then sending IOs with holes.
1895  *
1896  * Though driver can request block layer to disable IO merging by calling-
1897  * blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
1898  * user may tune sysfs parameter- nomerges again to 0 or 1.
1899  *
1900  * If in future IO scheduling is enabled with SCSI BLK MQ,
1901  * this algorithm to detect holes will be required in driver
1902  * for SCSI BLK MQ enabled case as well.
1903  *
1904  *
1905  */
1906         scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
1907                 if ((i != 0) && (i != (sge_count - 1))) {
1908                         if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
1909                             mega_mod64(sg_dma_address(sg_scmd),
1910                                        mr_nvme_pg_size)) {
1911                                 build_prp = false;
1912                                 atomic_inc(&instance->sge_holes_type1);
1913                                 break;
1914                         }
1915                 }
1916
1917                 if ((sge_count > 1) && (i == 0)) {
1918                         if ((mega_mod64((sg_dma_address(sg_scmd) +
1919                                         sg_dma_len(sg_scmd)),
1920                                         mr_nvme_pg_size))) {
1921                                 build_prp = false;
1922                                 atomic_inc(&instance->sge_holes_type2);
1923                                 break;
1924                         }
1925                 }
1926
1927                 if ((sge_count > 1) && (i == (sge_count - 1))) {
1928                         if (mega_mod64(sg_dma_address(sg_scmd),
1929                                        mr_nvme_pg_size)) {
1930                                 build_prp = false;
1931                                 atomic_inc(&instance->sge_holes_type3);
1932                                 break;
1933                         }
1934                 }
1935         }
1936
1937         return build_prp;
1938 }
1939
1940 /**
1941  * megasas_make_prp_nvme -
1942  * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
1943  *
1944  * @instance:           Adapter soft state
1945  * @scmd:               SCSI command from the mid-layer
1946  * @sgl_ptr:            SGL to be filled in
1947  * @cmd:                Fusion command frame
1948  * @sge_count:          scatter gather element count.
1949  *
1950  * Returns:             true: PRPs are built
1951  *                      false: IEEE SGLs needs to be built
1952  */
1953 static bool
1954 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
1955                       struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1956                       struct megasas_cmd_fusion *cmd, int sge_count)
1957 {
1958         int sge_len, offset, num_prp_in_chain = 0;
1959         struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
1960         u64 *ptr_sgl;
1961         dma_addr_t ptr_sgl_phys;
1962         u64 sge_addr;
1963         u32 page_mask, page_mask_result;
1964         struct scatterlist *sg_scmd;
1965         u32 first_prp_len;
1966         bool build_prp = false;
1967         int data_len = scsi_bufflen(scmd);
1968         struct fusion_context *fusion;
1969         u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1970                                         MR_DEFAULT_NVME_PAGE_SIZE);
1971
1972         fusion = instance->ctrl_context;
1973
1974         build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
1975
1976         if (!build_prp)
1977                 return false;
1978
1979         /*
1980          * Nvme has a very convoluted prp format.  One prp is required
1981          * for each page or partial page. Driver need to split up OS sg_list
1982          * entries if it is longer than one page or cross a page
1983          * boundary.  Driver also have to insert a PRP list pointer entry as
1984          * the last entry in each physical page of the PRP list.
1985          *
1986          * NOTE: The first PRP "entry" is actually placed in the first
1987          * SGL entry in the main message as IEEE 64 format.  The 2nd
1988          * entry in the main message is the chain element, and the rest
1989          * of the PRP entries are built in the contiguous pcie buffer.
1990          */
1991         page_mask = mr_nvme_pg_size - 1;
1992         ptr_sgl = (u64 *)cmd->sg_frame;
1993         ptr_sgl_phys = cmd->sg_frame_phys_addr;
1994         memset(ptr_sgl, 0, instance->max_chain_frame_sz);
1995
1996         /* Build chain frame element which holds all prps except first*/
1997         main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
1998             ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
1999
2000         main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
2001         main_chain_element->NextChainOffset = 0;
2002         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2003                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
2004                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
2005
2006         /* Build first prp, sge need not to be page aligned*/
2007         ptr_first_sgl = sgl_ptr;
2008         sg_scmd = scsi_sglist(scmd);
2009         sge_addr = sg_dma_address(sg_scmd);
2010         sge_len = sg_dma_len(sg_scmd);
2011
2012         offset = (u32)(sge_addr & page_mask);
2013         first_prp_len = mr_nvme_pg_size - offset;
2014
2015         ptr_first_sgl->Address = cpu_to_le64(sge_addr);
2016         ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
2017
2018         data_len -= first_prp_len;
2019
2020         if (sge_len > first_prp_len) {
2021                 sge_addr += first_prp_len;
2022                 sge_len -= first_prp_len;
2023         } else if (sge_len == first_prp_len) {
2024                 sg_scmd = sg_next(sg_scmd);
2025                 sge_addr = sg_dma_address(sg_scmd);
2026                 sge_len = sg_dma_len(sg_scmd);
2027         }
2028
2029         for (;;) {
2030                 offset = (u32)(sge_addr & page_mask);
2031
2032                 /* Put PRP pointer due to page boundary*/
2033                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
2034                 if (unlikely(!page_mask_result)) {
2035                         scmd_printk(KERN_NOTICE,
2036                                     scmd, "page boundary ptr_sgl: 0x%p\n",
2037                                     ptr_sgl);
2038                         ptr_sgl_phys += 8;
2039                         *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
2040                         ptr_sgl++;
2041                         num_prp_in_chain++;
2042                 }
2043
2044                 *ptr_sgl = cpu_to_le64(sge_addr);
2045                 ptr_sgl++;
2046                 ptr_sgl_phys += 8;
2047                 num_prp_in_chain++;
2048
2049                 sge_addr += mr_nvme_pg_size;
2050                 sge_len -= mr_nvme_pg_size;
2051                 data_len -= mr_nvme_pg_size;
2052
2053                 if (data_len <= 0)
2054                         break;
2055
2056                 if (sge_len > 0)
2057                         continue;
2058
2059                 sg_scmd = sg_next(sg_scmd);
2060                 sge_addr = sg_dma_address(sg_scmd);
2061                 sge_len = sg_dma_len(sg_scmd);
2062         }
2063
2064         main_chain_element->Length =
2065                         cpu_to_le32(num_prp_in_chain * sizeof(u64));
2066
2067         atomic_inc(&instance->prp_sgl);
2068         return build_prp;
2069 }
2070
2071 /**
2072  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
2073  * @instance:           Adapter soft state
2074  * @scp:                SCSI command from the mid-layer
2075  * @sgl_ptr:            SGL to be filled in
2076  * @cmd:                cmd we are working on
2077  * @sge_count           sge count
2078  *
2079  */
2080 static void
2081 megasas_make_sgl_fusion(struct megasas_instance *instance,
2082                         struct scsi_cmnd *scp,
2083                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
2084                         struct megasas_cmd_fusion *cmd, int sge_count)
2085 {
2086         int i, sg_processed;
2087         struct scatterlist *os_sgl;
2088         struct fusion_context *fusion;
2089
2090         fusion = instance->ctrl_context;
2091
2092         if (instance->adapter_type >= INVADER_SERIES) {
2093                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
2094                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2095                 sgl_ptr_end->Flags = 0;
2096         }
2097
2098         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
2099                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
2100                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
2101                 sgl_ptr->Flags = 0;
2102                 if (instance->adapter_type >= INVADER_SERIES)
2103                         if (i == sge_count - 1)
2104                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
2105                 sgl_ptr++;
2106                 sg_processed = i + 1;
2107
2108                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
2109                     (sge_count > fusion->max_sge_in_main_msg)) {
2110
2111                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
2112                         if (instance->adapter_type >= INVADER_SERIES) {
2113                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
2114                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
2115                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
2116                                         cmd->io_request->ChainOffset =
2117                                                 fusion->
2118                                                 chain_offset_io_request;
2119                                 else
2120                                         cmd->io_request->ChainOffset = 0;
2121                         } else
2122                                 cmd->io_request->ChainOffset =
2123                                         fusion->chain_offset_io_request;
2124
2125                         sg_chain = sgl_ptr;
2126                         /* Prepare chain element */
2127                         sg_chain->NextChainOffset = 0;
2128                         if (instance->adapter_type >= INVADER_SERIES)
2129                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
2130                         else
2131                                 sg_chain->Flags =
2132                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2133                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
2134                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
2135                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
2136
2137                         sgl_ptr =
2138                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
2139                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
2140                 }
2141         }
2142         atomic_inc(&instance->ieee_sgl);
2143 }
2144
2145 /**
2146  * megasas_make_sgl -   Build Scatter Gather List(SGLs)
2147  * @scp:                SCSI command pointer
2148  * @instance:           Soft instance of controller
2149  * @cmd:                Fusion command pointer
2150  *
2151  * This function will build sgls based on device type.
2152  * For nvme drives, there is different way of building sgls in nvme native
2153  * format- PRPs(Physical Region Page).
2154  *
2155  * Returns the number of sg lists actually used, zero if the sg lists
2156  * is NULL, or -ENOMEM if the mapping failed
2157  */
2158 static
2159 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
2160                      struct megasas_cmd_fusion *cmd)
2161 {
2162         int sge_count;
2163         bool build_prp = false;
2164         struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
2165
2166         sge_count = scsi_dma_map(scp);
2167
2168         if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
2169                 return sge_count;
2170
2171         sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
2172         if ((le16_to_cpu(cmd->io_request->IoFlags) &
2173             MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
2174             (cmd->pd_interface == NVME_PD))
2175                 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
2176                                                   cmd, sge_count);
2177
2178         if (!build_prp)
2179                 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
2180                                         cmd, sge_count);
2181
2182         return sge_count;
2183 }
2184
2185 /**
2186  * megasas_set_pd_lba - Sets PD LBA
2187  * @cdb:                CDB
2188  * @cdb_len:            cdb length
2189  * @start_blk:          Start block of IO
2190  *
2191  * Used to set the PD LBA in CDB for FP IOs
2192  */
2193 void
2194 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
2195                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
2196                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
2197 {
2198         struct MR_LD_RAID *raid;
2199         u16 ld;
2200         u64 start_blk = io_info->pdBlock;
2201         u8 *cdb = io_request->CDB.CDB32;
2202         u32 num_blocks = io_info->numBlocks;
2203         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
2204
2205         /* Check if T10 PI (DIF) is enabled for this LD */
2206         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
2207         raid = MR_LdRaidGet(ld, local_map_ptr);
2208         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
2209                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2210                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
2211                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
2212
2213                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2214                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
2215                 else
2216                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
2217                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
2218
2219                 /* LBA */
2220                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
2221                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
2222                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
2223                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
2224                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
2225                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
2226                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
2227                 cdb[19] = (u8)(start_blk & 0xff);
2228
2229                 /* Logical block reference tag */
2230                 io_request->CDB.EEDP32.PrimaryReferenceTag =
2231                         cpu_to_be32(ref_tag);
2232                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
2233                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
2234
2235                 /* Transfer length */
2236                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
2237                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
2238                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
2239                 cdb[31] = (u8)(num_blocks & 0xff);
2240
2241                 /* set SCSI IO EEDPFlags */
2242                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
2243                         io_request->EEDPFlags = cpu_to_le16(
2244                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
2245                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
2246                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
2247                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
2248                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
2249                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
2250                 } else {
2251                         io_request->EEDPFlags = cpu_to_le16(
2252                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
2253                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
2254                 }
2255                 io_request->Control |= cpu_to_le32((0x4 << 26));
2256                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
2257         } else {
2258                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
2259                 if (((cdb_len == 12) || (cdb_len == 16)) &&
2260                     (start_blk <= 0xffffffff)) {
2261                         if (cdb_len == 16) {
2262                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
2263                                 flagvals = cdb[1];
2264                                 groupnum = cdb[14];
2265                                 control = cdb[15];
2266                         } else {
2267                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
2268                                 flagvals = cdb[1];
2269                                 groupnum = cdb[10];
2270                                 control = cdb[11];
2271                         }
2272
2273                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2274
2275                         cdb[0] = opcode;
2276                         cdb[1] = flagvals;
2277                         cdb[6] = groupnum;
2278                         cdb[9] = control;
2279
2280                         /* Transfer length */
2281                         cdb[8] = (u8)(num_blocks & 0xff);
2282                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
2283
2284                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
2285                         cdb_len = 10;
2286                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
2287                         /* Convert to 16 byte CDB for large LBA's */
2288                         switch (cdb_len) {
2289                         case 6:
2290                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
2291                                 control = cdb[5];
2292                                 break;
2293                         case 10:
2294                                 opcode =
2295                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
2296                                 flagvals = cdb[1];
2297                                 groupnum = cdb[6];
2298                                 control = cdb[9];
2299                                 break;
2300                         case 12:
2301                                 opcode =
2302                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
2303                                 flagvals = cdb[1];
2304                                 groupnum = cdb[10];
2305                                 control = cdb[11];
2306                                 break;
2307                         }
2308
2309                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
2310
2311                         cdb[0] = opcode;
2312                         cdb[1] = flagvals;
2313                         cdb[14] = groupnum;
2314                         cdb[15] = control;
2315
2316                         /* Transfer length */
2317                         cdb[13] = (u8)(num_blocks & 0xff);
2318                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
2319                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
2320                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
2321
2322                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
2323                         cdb_len = 16;
2324                 }
2325
2326                 /* Normal case, just load LBA here */
2327                 switch (cdb_len) {
2328                 case 6:
2329                 {
2330                         u8 val = cdb[1] & 0xE0;
2331                         cdb[3] = (u8)(start_blk & 0xff);
2332                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
2333                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2334                         break;
2335                 }
2336                 case 10:
2337                         cdb[5] = (u8)(start_blk & 0xff);
2338                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2339                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2340                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2341                         break;
2342                 case 12:
2343                         cdb[5]    = (u8)(start_blk & 0xff);
2344                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2345                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2346                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2347                         break;
2348                 case 16:
2349                         cdb[9]    = (u8)(start_blk & 0xff);
2350                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2351                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2352                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2353                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2354                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2355                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2356                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2357                         break;
2358                 }
2359         }
2360 }
2361
2362 /**
2363  * megasas_stream_detect -      stream detection on read and and write IOs
2364  * @instance:           Adapter soft state
2365  * @cmd:                    Command to be prepared
2366  * @io_info:            IO Request info
2367  *
2368  */
2369
2370 /** stream detection on read and and write IOs */
2371 static void megasas_stream_detect(struct megasas_instance *instance,
2372                                   struct megasas_cmd_fusion *cmd,
2373                                   struct IO_REQUEST_INFO *io_info)
2374 {
2375         struct fusion_context *fusion = instance->ctrl_context;
2376         u32 device_id = io_info->ldTgtId;
2377         struct LD_STREAM_DETECT *current_ld_sd
2378                 = fusion->stream_detect_by_ld[device_id];
2379         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2380         u32 shifted_values, unshifted_values;
2381         u32 index_value_mask, shifted_values_mask;
2382         int i;
2383         bool is_read_ahead = false;
2384         struct STREAM_DETECT *current_sd;
2385         /* find possible stream */
2386         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2387                 stream_num = (*track_stream >>
2388                         (i * BITS_PER_INDEX_STREAM)) &
2389                         STREAM_MASK;
2390                 current_sd = &current_ld_sd->stream_track[stream_num];
2391                 /* if we found a stream, update the raid
2392                  *  context and also update the mruBitMap
2393                  */
2394                 /*      boundary condition */
2395                 if ((current_sd->next_seq_lba) &&
2396                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2397                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2398                     (current_sd->is_read == io_info->isRead)) {
2399
2400                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2401                             ((!io_info->isRead) || (!is_read_ahead)))
2402                                 /*
2403                                  * Once the API availible we need to change this.
2404                                  * At this point we are not allowing any gap
2405                                  */
2406                                 continue;
2407
2408                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2409                         current_sd->next_seq_lba =
2410                         io_info->ldStartBlock + io_info->numBlocks;
2411                         /*
2412                          *      update the mruBitMap LRU
2413                          */
2414                         shifted_values_mask =
2415                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2416                         shifted_values = ((*track_stream & shifted_values_mask)
2417                                                 << BITS_PER_INDEX_STREAM);
2418                         index_value_mask =
2419                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2420                         unshifted_values =
2421                                 *track_stream & ~(shifted_values_mask |
2422                                 index_value_mask);
2423                         *track_stream =
2424                                 unshifted_values | shifted_values | stream_num;
2425                         return;
2426                 }
2427         }
2428         /*
2429          * if we did not find any stream, create a new one
2430          * from the least recently used
2431          */
2432         stream_num = (*track_stream >>
2433                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2434                 STREAM_MASK;
2435         current_sd = &current_ld_sd->stream_track[stream_num];
2436         current_sd->is_read = io_info->isRead;
2437         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2438         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2439         return;
2440 }
2441
2442 /**
2443  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2444  * affinity (cpu of the controller) and raid_flags in the raid context
2445  * based on IO type.
2446  *
2447  * @praid_context:      IO RAID context
2448  * @raid:               LD raid map
2449  * @fp_possible:        Is fast path possible?
2450  * @is_read:            Is read IO?
2451  *
2452  */
2453 static void
2454 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
2455                                   struct MR_LD_RAID *raid, bool fp_possible,
2456                                   u8 is_read, u32 scsi_buff_len)
2457 {
2458         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2459         struct RAID_CONTEXT_G35 *rctx_g35;
2460
2461         rctx_g35 = &praid_context->raid_context_g35;
2462         if (fp_possible) {
2463                 if (is_read) {
2464                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2465                             (raid->cpuAffinity.pdRead.cpu1))
2466                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2467                         else if (raid->cpuAffinity.pdRead.cpu1)
2468                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2469                 } else {
2470                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2471                             (raid->cpuAffinity.pdWrite.cpu1))
2472                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2473                         else if (raid->cpuAffinity.pdWrite.cpu1)
2474                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2475                         /* Fast path cache by pass capable R0/R1 VD */
2476                         if ((raid->level <= 1) &&
2477                             (raid->capability.fp_cache_bypass_capable)) {
2478                                 rctx_g35->routing_flags |=
2479                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2480                                 rctx_g35->raid_flags =
2481                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2482                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2483                         }
2484                 }
2485         } else {
2486                 if (is_read) {
2487                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2488                             (raid->cpuAffinity.ldRead.cpu1))
2489                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2490                         else if (raid->cpuAffinity.ldRead.cpu1)
2491                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2492                 } else {
2493                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2494                             (raid->cpuAffinity.ldWrite.cpu1))
2495                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2496                         else if (raid->cpuAffinity.ldWrite.cpu1)
2497                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2498
2499                         if (is_stream_detected(rctx_g35) &&
2500                             ((raid->level == 5) || (raid->level == 6)) &&
2501                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2502                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2503                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2504                 }
2505         }
2506
2507         rctx_g35->routing_flags |=
2508                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2509
2510         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2511          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2512          * IO Subtype is not bitmap.
2513          */
2514         if ((raid->level == 1) && (!is_read)) {
2515                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2516                         praid_context->raid_context_g35.raid_flags =
2517                                 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2518                                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2519         }
2520 }
2521
2522 /**
2523  * megasas_build_ldio_fusion -  Prepares IOs to devices
2524  * @instance:           Adapter soft state
2525  * @scp:                SCSI command
2526  * @cmd:                Command to be prepared
2527  *
2528  * Prepares the io_request and chain elements (sg_frame) for IO
2529  * The IO can be for PD (Fast Path) or LD
2530  */
2531 void
2532 megasas_build_ldio_fusion(struct megasas_instance *instance,
2533                           struct scsi_cmnd *scp,
2534                           struct megasas_cmd_fusion *cmd)
2535 {
2536         bool fp_possible;
2537         u16 ld;
2538         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2539         u32 scsi_buff_len;
2540         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2541         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2542         struct IO_REQUEST_INFO io_info;
2543         struct fusion_context *fusion;
2544         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2545         u8 *raidLUN;
2546         unsigned long spinlock_flags;
2547         union RAID_CONTEXT_UNION *praid_context;
2548         struct MR_LD_RAID *raid = NULL;
2549         struct MR_PRIV_DEVICE *mrdev_priv;
2550
2551         device_id = MEGASAS_DEV_INDEX(scp);
2552
2553         fusion = instance->ctrl_context;
2554
2555         io_request = cmd->io_request;
2556         io_request->RaidContext.raid_context.virtual_disk_tgt_id =
2557                 cpu_to_le16(device_id);
2558         io_request->RaidContext.raid_context.status = 0;
2559         io_request->RaidContext.raid_context.ex_status = 0;
2560
2561         req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2562
2563         start_lba_lo = 0;
2564         start_lba_hi = 0;
2565         fp_possible = false;
2566
2567         /*
2568          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2569          */
2570         if (scp->cmd_len == 6) {
2571                 datalength = (u32) scp->cmnd[4];
2572                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2573                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2574
2575                 start_lba_lo &= 0x1FFFFF;
2576         }
2577
2578         /*
2579          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2580          */
2581         else if (scp->cmd_len == 10) {
2582                 datalength = (u32) scp->cmnd[8] |
2583                         ((u32) scp->cmnd[7] << 8);
2584                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2585                         ((u32) scp->cmnd[3] << 16) |
2586                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2587         }
2588
2589         /*
2590          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2591          */
2592         else if (scp->cmd_len == 12) {
2593                 datalength = ((u32) scp->cmnd[6] << 24) |
2594                         ((u32) scp->cmnd[7] << 16) |
2595                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2596                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2597                         ((u32) scp->cmnd[3] << 16) |
2598                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2599         }
2600
2601         /*
2602          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2603          */
2604         else if (scp->cmd_len == 16) {
2605                 datalength = ((u32) scp->cmnd[10] << 24) |
2606                         ((u32) scp->cmnd[11] << 16) |
2607                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2608                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2609                         ((u32) scp->cmnd[7] << 16) |
2610                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2611
2612                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2613                         ((u32) scp->cmnd[3] << 16) |
2614                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2615         }
2616
2617         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2618         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2619         io_info.numBlocks = datalength;
2620         io_info.ldTgtId = device_id;
2621         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2622         scsi_buff_len = scsi_bufflen(scp);
2623         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2624
2625         if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2626                 io_info.isRead = 1;
2627
2628         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2629         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2630
2631         if (ld < instance->fw_supported_vd_count)
2632                 raid = MR_LdRaidGet(ld, local_map_ptr);
2633
2634         if (!raid || (!fusion->fast_path_io)) {
2635                 io_request->RaidContext.raid_context.reg_lock_flags  = 0;
2636                 fp_possible = false;
2637         } else {
2638                 if (MR_BuildRaidContext(instance, &io_info,
2639                                         &io_request->RaidContext.raid_context,
2640                                         local_map_ptr, &raidLUN))
2641                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2642         }
2643
2644         cmd->request_desc->SCSIIO.MSIxIndex =
2645                 instance->reply_map[raw_smp_processor_id()];
2646
2647         praid_context = &io_request->RaidContext;
2648
2649         if (instance->adapter_type == VENTURA_SERIES) {
2650                 /* FP for Optimal raid level 1.
2651                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2652                  * are built by the driver as LD I/Os.
2653                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2654                  * (there is never a reason to process these as buffered writes)
2655                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2656                  * with the SLD bit asserted.
2657                  */
2658                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2659                         mrdev_priv = scp->device->hostdata;
2660
2661                         if (atomic_inc_return(&instance->fw_outstanding) >
2662                                 (instance->host->can_queue)) {
2663                                 fp_possible = false;
2664                                 atomic_dec(&instance->fw_outstanding);
2665                         } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2666                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) {
2667                                 fp_possible = false;
2668                                 atomic_dec(&instance->fw_outstanding);
2669                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2670                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2671                                                    instance->r1_ldio_hint_default);
2672                         }
2673                 }
2674
2675                 if (!fp_possible ||
2676                     (io_info.isRead && io_info.ra_capable)) {
2677                         spin_lock_irqsave(&instance->stream_lock,
2678                                           spinlock_flags);
2679                         megasas_stream_detect(instance, cmd, &io_info);
2680                         spin_unlock_irqrestore(&instance->stream_lock,
2681                                                spinlock_flags);
2682                         /* In ventura if stream detected for a read and it is
2683                          * read ahead capable make this IO as LDIO
2684                          */
2685                         if (is_stream_detected(&io_request->RaidContext.raid_context_g35))
2686                                 fp_possible = false;
2687                 }
2688
2689                 /* If raid is NULL, set CPU affinity to default CPU0 */
2690                 if (raid)
2691                         megasas_set_raidflag_cpu_affinity(praid_context,
2692                                 raid, fp_possible, io_info.isRead,
2693                                 scsi_buff_len);
2694                 else
2695                         praid_context->raid_context_g35.routing_flags |=
2696                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2697         }
2698
2699         if (fp_possible) {
2700                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2701                                    local_map_ptr, start_lba_lo);
2702                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2703                 cmd->request_desc->SCSIIO.RequestFlags =
2704                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2705                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2706                 if (instance->adapter_type == INVADER_SERIES) {
2707                         if (io_request->RaidContext.raid_context.reg_lock_flags ==
2708                             REGION_TYPE_UNUSED)
2709                                 cmd->request_desc->SCSIIO.RequestFlags =
2710                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2711                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2712                         io_request->RaidContext.raid_context.type
2713                                 = MPI2_TYPE_CUDA;
2714                         io_request->RaidContext.raid_context.nseg = 0x1;
2715                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2716                         io_request->RaidContext.raid_context.reg_lock_flags |=
2717                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2718                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2719                 } else if (instance->adapter_type == VENTURA_SERIES) {
2720                         io_request->RaidContext.raid_context_g35.nseg_type |=
2721                                                 (1 << RAID_CONTEXT_NSEG_SHIFT);
2722                         io_request->RaidContext.raid_context_g35.nseg_type |=
2723                                                 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2724                         io_request->RaidContext.raid_context_g35.routing_flags |=
2725                                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2726                         io_request->IoFlags |=
2727                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2728                 }
2729                 if (fusion->load_balance_info &&
2730                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2731                         (io_info.isRead)) {
2732                         io_info.devHandle =
2733                                 get_updated_dev_handle(instance,
2734                                         &fusion->load_balance_info[device_id],
2735                                         &io_info, local_map_ptr);
2736                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2737                         cmd->pd_r1_lb = io_info.pd_after_lb;
2738                         if (instance->adapter_type == VENTURA_SERIES)
2739                                 io_request->RaidContext.raid_context_g35.span_arm
2740                                         = io_info.span_arm;
2741                         else
2742                                 io_request->RaidContext.raid_context.span_arm
2743                                         = io_info.span_arm;
2744
2745                 } else
2746                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2747
2748                 if (instance->adapter_type == VENTURA_SERIES)
2749                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2750                 else
2751                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2752
2753                 if ((raidLUN[0] == 1) &&
2754                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2755                         instance->dev_handle = !(instance->dev_handle);
2756                         io_info.devHandle =
2757                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2758                 }
2759
2760                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2761                 io_request->DevHandle = io_info.devHandle;
2762                 cmd->pd_interface = io_info.pd_interface;
2763                 /* populate the LUN field */
2764                 memcpy(io_request->LUN, raidLUN, 8);
2765         } else {
2766                 io_request->RaidContext.raid_context.timeout_value =
2767                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2768                 cmd->request_desc->SCSIIO.RequestFlags =
2769                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2770                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2771                 if (instance->adapter_type == INVADER_SERIES) {
2772                         if (io_info.do_fp_rlbypass ||
2773                         (io_request->RaidContext.raid_context.reg_lock_flags
2774                                         == REGION_TYPE_UNUSED))
2775                                 cmd->request_desc->SCSIIO.RequestFlags =
2776                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2777                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2778                         io_request->RaidContext.raid_context.type
2779                                 = MPI2_TYPE_CUDA;
2780                         io_request->RaidContext.raid_context.reg_lock_flags |=
2781                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2782                                  MR_RL_FLAGS_SEQ_NUM_ENABLE);
2783                         io_request->RaidContext.raid_context.nseg = 0x1;
2784                 } else if (instance->adapter_type == VENTURA_SERIES) {
2785                         io_request->RaidContext.raid_context_g35.routing_flags |=
2786                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2787                         io_request->RaidContext.raid_context_g35.nseg_type |=
2788                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
2789                         io_request->RaidContext.raid_context_g35.nseg_type |=
2790                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2791                 }
2792                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2793                 io_request->DevHandle = cpu_to_le16(device_id);
2794
2795         } /* Not FP */
2796 }
2797
2798 /**
2799  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2800  * @instance:           Adapter soft state
2801  * @scp:                SCSI command
2802  * @cmd:                Command to be prepared
2803  *
2804  * Prepares the io_request frame for non-rw io cmds for vd.
2805  */
2806 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2807                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2808 {
2809         u32 device_id;
2810         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2811         u16 ld;
2812         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2813         struct fusion_context *fusion = instance->ctrl_context;
2814         u8                          span, physArm;
2815         __le16                      devHandle;
2816         u32                         arRef, pd;
2817         struct MR_LD_RAID                  *raid;
2818         struct RAID_CONTEXT                *pRAID_Context;
2819         u8 fp_possible = 1;
2820
2821         io_request = cmd->io_request;
2822         device_id = MEGASAS_DEV_INDEX(scmd);
2823         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2824         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2825         /* get RAID_Context pointer */
2826         pRAID_Context = &io_request->RaidContext.raid_context;
2827         /* Check with FW team */
2828         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2829         pRAID_Context->reg_lock_row_lba    = 0;
2830         pRAID_Context->reg_lock_length    = 0;
2831
2832         if (fusion->fast_path_io && (
2833                 device_id < instance->fw_supported_vd_count)) {
2834
2835                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2836                 if (ld >= instance->fw_supported_vd_count - 1)
2837                         fp_possible = 0;
2838                 else {
2839                         raid = MR_LdRaidGet(ld, local_map_ptr);
2840                         if (!(raid->capability.fpNonRWCapable))
2841                                 fp_possible = 0;
2842                 }
2843         } else
2844                 fp_possible = 0;
2845
2846         if (!fp_possible) {
2847                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2848                 io_request->DevHandle = cpu_to_le16(device_id);
2849                 io_request->LUN[1] = scmd->device->lun;
2850                 pRAID_Context->timeout_value =
2851                         cpu_to_le16 (scmd->request->timeout / HZ);
2852                 cmd->request_desc->SCSIIO.RequestFlags =
2853                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2854                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2855         } else {
2856
2857                 /* set RAID context values */
2858                 pRAID_Context->config_seq_num = raid->seqNum;
2859                 if (instance->adapter_type != VENTURA_SERIES)
2860                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
2861                 pRAID_Context->timeout_value =
2862                         cpu_to_le16(raid->fpIoTimeoutForLd);
2863
2864                 /* get the DevHandle for the PD (since this is
2865                    fpNonRWCapable, this is a single disk RAID0) */
2866                 span = physArm = 0;
2867                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
2868                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
2869                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
2870
2871                 /* build request descriptor */
2872                 cmd->request_desc->SCSIIO.RequestFlags =
2873                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2874                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2875                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
2876
2877                 /* populate the LUN field */
2878                 memcpy(io_request->LUN, raid->LUN, 8);
2879
2880                 /* build the raidScsiIO structure */
2881                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2882                 io_request->DevHandle = devHandle;
2883         }
2884 }
2885
2886 /**
2887  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
2888  * @instance:           Adapter soft state
2889  * @scp:                SCSI command
2890  * @cmd:                Command to be prepared
2891  * @fp_possible:        parameter to detect fast path or firmware path io.
2892  *
2893  * Prepares the io_request frame for rw/non-rw io cmds for syspds
2894  */
2895 static void
2896 megasas_build_syspd_fusion(struct megasas_instance *instance,
2897         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
2898         bool fp_possible)
2899 {
2900         u32 device_id;
2901         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2902         u16 pd_index = 0;
2903         u16 os_timeout_value;
2904         u16 timeout_limit;
2905         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2906         struct RAID_CONTEXT     *pRAID_Context;
2907         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
2908         struct MR_PRIV_DEVICE *mr_device_priv_data;
2909         struct fusion_context *fusion = instance->ctrl_context;
2910         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
2911
2912         device_id = MEGASAS_DEV_INDEX(scmd);
2913         pd_index = MEGASAS_PD_INDEX(scmd);
2914         os_timeout_value = scmd->request->timeout / HZ;
2915         mr_device_priv_data = scmd->device->hostdata;
2916         cmd->pd_interface = mr_device_priv_data->interface_type;
2917
2918         io_request = cmd->io_request;
2919         /* get RAID_Context pointer */
2920         pRAID_Context = &io_request->RaidContext.raid_context;
2921         pRAID_Context->reg_lock_flags = 0;
2922         pRAID_Context->reg_lock_row_lba = 0;
2923         pRAID_Context->reg_lock_length = 0;
2924         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2925         io_request->LUN[1] = scmd->device->lun;
2926         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
2927                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
2928
2929         /* If FW supports PD sequence number */
2930         if (instance->use_seqnum_jbod_fp &&
2931                 instance->pd_list[pd_index].driveType == TYPE_DISK) {
2932                 /* TgtId must be incremented by 255 as jbod seq number is index
2933                  * below raid map
2934                  */
2935                  /* More than 256 PD/JBOD support for Ventura */
2936                 if (instance->support_morethan256jbod)
2937                         pRAID_Context->virtual_disk_tgt_id =
2938                                 pd_sync->seq[pd_index].pd_target_id;
2939                 else
2940                         pRAID_Context->virtual_disk_tgt_id =
2941                                 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
2942                 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum;
2943                 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
2944                 if (instance->adapter_type == VENTURA_SERIES) {
2945                         io_request->RaidContext.raid_context_g35.routing_flags |=
2946                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2947                         io_request->RaidContext.raid_context_g35.nseg_type |=
2948                                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
2949                         io_request->RaidContext.raid_context_g35.nseg_type |=
2950                                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2951                 } else {
2952                         pRAID_Context->type = MPI2_TYPE_CUDA;
2953                         pRAID_Context->nseg = 0x1;
2954                         pRAID_Context->reg_lock_flags |=
2955                                 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
2956                 }
2957         } else if (fusion->fast_path_io) {
2958                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2959                 pRAID_Context->config_seq_num = 0;
2960                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2961                 io_request->DevHandle =
2962                         local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
2963         } else {
2964                 /* Want to send all IO via FW path */
2965                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2966                 pRAID_Context->config_seq_num = 0;
2967                 io_request->DevHandle = cpu_to_le16(0xFFFF);
2968         }
2969
2970         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
2971
2972         cmd->request_desc->SCSIIO.MSIxIndex =
2973                 instance->reply_map[raw_smp_processor_id()];
2974
2975         if (!fp_possible) {
2976                 /* system pd firmware path */
2977                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2978                 cmd->request_desc->SCSIIO.RequestFlags =
2979                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2980                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2981                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
2982                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2983         } else {
2984                 if (os_timeout_value)
2985                         os_timeout_value++;
2986
2987                 /* system pd Fast Path */
2988                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2989                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
2990                                 255 : 0xFFFF;
2991                 pRAID_Context->timeout_value =
2992                         cpu_to_le16((os_timeout_value > timeout_limit) ?
2993                         timeout_limit : os_timeout_value);
2994                 if (instance->adapter_type >= INVADER_SERIES)
2995                         io_request->IoFlags |=
2996                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2997
2998                 cmd->request_desc->SCSIIO.RequestFlags =
2999                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
3000                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3001         }
3002 }
3003
3004 /**
3005  * megasas_build_io_fusion -    Prepares IOs to devices
3006  * @instance:           Adapter soft state
3007  * @scp:                SCSI command
3008  * @cmd:                Command to be prepared
3009  *
3010  * Invokes helper functions to prepare request frames
3011  * and sets flags appropriate for IO/Non-IO cmd
3012  */
3013 int
3014 megasas_build_io_fusion(struct megasas_instance *instance,
3015                         struct scsi_cmnd *scp,
3016                         struct megasas_cmd_fusion *cmd)
3017 {
3018         int sge_count;
3019         u8  cmd_type;
3020         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
3021         struct MR_PRIV_DEVICE *mr_device_priv_data;
3022         mr_device_priv_data = scp->device->hostdata;
3023
3024         /* Zero out some fields so they don't get reused */
3025         memset(io_request->LUN, 0x0, 8);
3026         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
3027         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
3028         io_request->EEDPFlags = 0;
3029         io_request->Control = 0;
3030         io_request->EEDPBlockSize = 0;
3031         io_request->ChainOffset = 0;
3032         io_request->RaidContext.raid_context.raid_flags = 0;
3033         io_request->RaidContext.raid_context.type = 0;
3034         io_request->RaidContext.raid_context.nseg = 0;
3035
3036         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
3037         /*
3038          * Just the CDB length,rest of the Flags are zero
3039          * This will be modified for FP in build_ldio_fusion
3040          */
3041         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
3042
3043         switch (cmd_type = megasas_cmd_type(scp)) {
3044         case READ_WRITE_LDIO:
3045                 megasas_build_ldio_fusion(instance, scp, cmd);
3046                 break;
3047         case NON_READ_WRITE_LDIO:
3048                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
3049                 break;
3050         case READ_WRITE_SYSPDIO:
3051                 megasas_build_syspd_fusion(instance, scp, cmd, true);
3052                 break;
3053         case NON_READ_WRITE_SYSPDIO:
3054                 if (instance->secure_jbod_support ||
3055                     mr_device_priv_data->is_tm_capable)
3056                         megasas_build_syspd_fusion(instance, scp, cmd, false);
3057                 else
3058                         megasas_build_syspd_fusion(instance, scp, cmd, true);
3059                 break;
3060         default:
3061                 break;
3062         }
3063
3064         /*
3065          * Construct SGL
3066          */
3067
3068         sge_count = megasas_make_sgl(instance, scp, cmd);
3069
3070         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
3071                 dev_err(&instance->pdev->dev,
3072                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
3073                         __func__, __LINE__, sge_count, instance->max_num_sge);
3074                 return 1;
3075         }
3076
3077         if (instance->adapter_type == VENTURA_SERIES) {
3078                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
3079                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
3080                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
3081         } else {
3082                 /* numSGE store lower 8 bit of sge_count.
3083                  * numSGEExt store higher 8 bit of sge_count
3084                  */
3085                 io_request->RaidContext.raid_context.num_sge = sge_count;
3086                 io_request->RaidContext.raid_context.num_sge_ext =
3087                         (u8)(sge_count >> 8);
3088         }
3089
3090         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
3091
3092         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
3093                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
3094         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
3095                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
3096
3097         io_request->SGLOffset0 =
3098                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
3099
3100         io_request->SenseBufferLowAddress =
3101                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
3102         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
3103
3104         cmd->scmd = scp;
3105         scp->SCp.ptr = (char *)cmd;
3106
3107         return 0;
3108 }
3109
3110 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3111 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
3112 {
3113         u8 *p;
3114         struct fusion_context *fusion;
3115
3116         fusion = instance->ctrl_context;
3117         p = fusion->req_frames_desc +
3118                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
3119
3120         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
3121 }
3122
3123
3124 /* megasas_prepate_secondRaid1_IO
3125  *  It prepares the raid 1 second IO
3126  */
3127 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
3128                             struct megasas_cmd_fusion *cmd,
3129                             struct megasas_cmd_fusion *r1_cmd)
3130 {
3131         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
3132         struct fusion_context *fusion;
3133         fusion = instance->ctrl_context;
3134         req_desc = cmd->request_desc;
3135         /* copy the io request frame as well as 8 SGEs data for r1 command*/
3136         memcpy(r1_cmd->io_request, cmd->io_request,
3137                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
3138         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
3139                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
3140         /*sense buffer is different for r1 command*/
3141         r1_cmd->io_request->SenseBufferLowAddress =
3142                         cpu_to_le32(lower_32_bits(r1_cmd->sense_phys_addr));
3143         r1_cmd->scmd = cmd->scmd;
3144         req_desc2 = megasas_get_request_descriptor(instance,
3145                                                    (r1_cmd->index - 1));
3146         req_desc2->Words = 0;
3147         r1_cmd->request_desc = req_desc2;
3148         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
3149         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
3150         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
3151         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
3152         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
3153         cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3154                         cpu_to_le16(r1_cmd->index);
3155         r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
3156                         cpu_to_le16(cmd->index);
3157         /*MSIxIndex of both commands request descriptors should be same*/
3158         r1_cmd->request_desc->SCSIIO.MSIxIndex =
3159                         cmd->request_desc->SCSIIO.MSIxIndex;
3160         /*span arm is different for r1 cmd*/
3161         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
3162                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
3163 }
3164
3165 /**
3166  * megasas_build_and_issue_cmd_fusion -Main routine for building and
3167  *                                     issuing non IOCTL cmd
3168  * @instance:                   Adapter soft state
3169  * @scmd:                       pointer to scsi cmd from OS
3170  */
3171 static u32
3172 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
3173                                    struct scsi_cmnd *scmd)
3174 {
3175         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
3176         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3177         u32 index;
3178         struct fusion_context *fusion;
3179
3180         fusion = instance->ctrl_context;
3181
3182         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
3183                 instance->ldio_threshold &&
3184                 (atomic_inc_return(&instance->ldio_outstanding) >
3185                 instance->ldio_threshold)) {
3186                 atomic_dec(&instance->ldio_outstanding);
3187                 return SCSI_MLQUEUE_DEVICE_BUSY;
3188         }
3189
3190         if (atomic_inc_return(&instance->fw_outstanding) >
3191                         instance->host->can_queue) {
3192                 atomic_dec(&instance->fw_outstanding);
3193                 return SCSI_MLQUEUE_HOST_BUSY;
3194         }
3195
3196         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
3197
3198         if (!cmd) {
3199                 atomic_dec(&instance->fw_outstanding);
3200                 return SCSI_MLQUEUE_HOST_BUSY;
3201         }
3202
3203         index = cmd->index;
3204
3205         req_desc = megasas_get_request_descriptor(instance, index-1);
3206
3207         req_desc->Words = 0;
3208         cmd->request_desc = req_desc;
3209
3210         if (megasas_build_io_fusion(instance, scmd, cmd)) {
3211                 megasas_return_cmd_fusion(instance, cmd);
3212                 dev_err(&instance->pdev->dev, "Error building command\n");
3213                 cmd->request_desc = NULL;
3214                 atomic_dec(&instance->fw_outstanding);
3215                 return SCSI_MLQUEUE_HOST_BUSY;
3216         }
3217
3218         req_desc = cmd->request_desc;
3219         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3220
3221         if (cmd->io_request->ChainOffset != 0 &&
3222             cmd->io_request->ChainOffset != 0xF)
3223                 dev_err(&instance->pdev->dev, "The chain offset value is not "
3224                        "correct : %x\n", cmd->io_request->ChainOffset);
3225         /*
3226          *      if it is raid 1/10 fp write capable.
3227          *      try to get second command from pool and construct it.
3228          *      From FW, it has confirmed that lba values of two PDs
3229          *      corresponds to single R1/10 LD are always same
3230          *
3231          */
3232         /*      driver side count always should be less than max_fw_cmds
3233          *      to get new command
3234          */
3235         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
3236                 r1_cmd = megasas_get_cmd_fusion(instance,
3237                                 (scmd->request->tag + instance->max_fw_cmds));
3238                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
3239         }
3240
3241
3242         /*
3243          * Issue the command to the FW
3244          */
3245
3246         megasas_fire_cmd_fusion(instance, req_desc);
3247
3248         if (r1_cmd)
3249                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
3250
3251
3252         return 0;
3253 }
3254
3255 /**
3256  * megasas_complete_r1_command -
3257  * completes R1 FP write commands which has valid peer smid
3258  * @instance:                   Adapter soft state
3259  * @cmd_fusion:                 MPT command frame
3260  *
3261  */
3262 static inline void
3263 megasas_complete_r1_command(struct megasas_instance *instance,
3264                             struct megasas_cmd_fusion *cmd)
3265 {
3266         u8 *sense, status, ex_status;
3267         u32 data_length;
3268         u16 peer_smid;
3269         struct fusion_context *fusion;
3270         struct megasas_cmd_fusion *r1_cmd = NULL;
3271         struct scsi_cmnd *scmd_local = NULL;
3272         struct RAID_CONTEXT_G35 *rctx_g35;
3273
3274         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
3275         fusion = instance->ctrl_context;
3276         peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid);
3277
3278         r1_cmd = fusion->cmd_list[peer_smid - 1];
3279         scmd_local = cmd->scmd;
3280         status = rctx_g35->status;
3281         ex_status = rctx_g35->ex_status;
3282         data_length = cmd->io_request->DataLength;
3283         sense = cmd->sense;
3284
3285         cmd->cmd_completed = true;
3286
3287         /* Check if peer command is completed or not*/
3288         if (r1_cmd->cmd_completed) {
3289                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
3290                 if (rctx_g35->status != MFI_STAT_OK) {
3291                         status = rctx_g35->status;
3292                         ex_status = rctx_g35->ex_status;
3293                         data_length = r1_cmd->io_request->DataLength;
3294                         sense = r1_cmd->sense;
3295                 }
3296
3297                 megasas_return_cmd_fusion(instance, r1_cmd);
3298                 map_cmd_status(fusion, scmd_local, status, ex_status,
3299                                le32_to_cpu(data_length), sense);
3300                 if (instance->ldio_threshold &&
3301                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3302                         atomic_dec(&instance->ldio_outstanding);
3303                 scmd_local->SCp.ptr = NULL;
3304                 megasas_return_cmd_fusion(instance, cmd);
3305                 scsi_dma_unmap(scmd_local);
3306                 scmd_local->scsi_done(scmd_local);
3307         }
3308 }
3309
3310 /**
3311  * complete_cmd_fusion -        Completes command
3312  * @instance:                   Adapter soft state
3313  * Completes all commands that is in reply descriptor queue
3314  */
3315 int
3316 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
3317 {
3318         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
3319         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
3320         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3321         struct fusion_context *fusion;
3322         struct megasas_cmd *cmd_mfi;
3323         struct megasas_cmd_fusion *cmd_fusion;
3324         u16 smid, num_completed;
3325         u8 reply_descript_type, *sense, status, extStatus;
3326         u32 device_id, data_length;
3327         union desc_value d_val;
3328         struct LD_LOAD_BALANCE_INFO *lbinfo;
3329         int threshold_reply_count = 0;
3330         struct scsi_cmnd *scmd_local = NULL;
3331         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
3332         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
3333
3334         fusion = instance->ctrl_context;
3335
3336         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
3337                 return IRQ_HANDLED;
3338
3339         desc = fusion->reply_frames_desc[MSIxIndex] +
3340                                 fusion->last_reply_idx[MSIxIndex];
3341
3342         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3343
3344         d_val.word = desc->Words;
3345
3346         reply_descript_type = reply_desc->ReplyFlags &
3347                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3348
3349         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3350                 return IRQ_NONE;
3351
3352         num_completed = 0;
3353
3354         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3355                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3356
3357                 smid = le16_to_cpu(reply_desc->SMID);
3358                 cmd_fusion = fusion->cmd_list[smid - 1];
3359                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3360                                                 cmd_fusion->io_request;
3361
3362                 scmd_local = cmd_fusion->scmd;
3363                 status = scsi_io_req->RaidContext.raid_context.status;
3364                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3365                 sense = cmd_fusion->sense;
3366                 data_length = scsi_io_req->DataLength;
3367
3368                 switch (scsi_io_req->Function) {
3369                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3370                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3371                                                 cmd_fusion->io_request;
3372                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3373                                                 &mr_tm_req->TmRequest;
3374                         dev_dbg(&instance->pdev->dev, "TM completion:"
3375                                 "type: 0x%x TaskMID: 0x%x\n",
3376                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3377                         complete(&cmd_fusion->done);
3378                         break;
3379                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3380                         /* Update load balancing info */
3381                         if (fusion->load_balance_info &&
3382                             (cmd_fusion->scmd->SCp.Status &
3383                             MEGASAS_LOAD_BALANCE_FLAG)) {
3384                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3385                                 lbinfo = &fusion->load_balance_info[device_id];
3386                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3387                                 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3388                         }
3389                         //Fall thru and complete IO
3390                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3391                         atomic_dec(&instance->fw_outstanding);
3392                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3393                                 map_cmd_status(fusion, scmd_local, status,
3394                                                extStatus, le32_to_cpu(data_length),
3395                                                sense);
3396                                 if (instance->ldio_threshold &&
3397                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3398                                         atomic_dec(&instance->ldio_outstanding);
3399                                 scmd_local->SCp.ptr = NULL;
3400                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3401                                 scsi_dma_unmap(scmd_local);
3402                                 scmd_local->scsi_done(scmd_local);
3403                         } else  /* Optimal VD - R1 FP command completion. */
3404                                 megasas_complete_r1_command(instance, cmd_fusion);
3405                         break;
3406                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3407                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3408                         /* Poll mode. Dummy free.
3409                          * In case of Interrupt mode, caller has reverse check.
3410                          */
3411                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3412                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3413                                 megasas_return_cmd(instance, cmd_mfi);
3414                         } else
3415                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3416                         break;
3417                 }
3418
3419                 fusion->last_reply_idx[MSIxIndex]++;
3420                 if (fusion->last_reply_idx[MSIxIndex] >=
3421                     fusion->reply_q_depth)
3422                         fusion->last_reply_idx[MSIxIndex] = 0;
3423
3424                 desc->Words = cpu_to_le64(ULLONG_MAX);
3425                 num_completed++;
3426                 threshold_reply_count++;
3427
3428                 /* Get the next reply descriptor */
3429                 if (!fusion->last_reply_idx[MSIxIndex])
3430                         desc = fusion->reply_frames_desc[MSIxIndex];
3431                 else
3432                         desc++;
3433
3434                 reply_desc =
3435                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3436
3437                 d_val.word = desc->Words;
3438
3439                 reply_descript_type = reply_desc->ReplyFlags &
3440                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3441
3442                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3443                         break;
3444                 /*
3445                  * Write to reply post host index register after completing threshold
3446                  * number of reply counts and still there are more replies in reply queue
3447                  * pending to be completed
3448                  */
3449                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
3450                         if (instance->msix_combined)
3451                                 writel(((MSIxIndex & 0x7) << 24) |
3452                                         fusion->last_reply_idx[MSIxIndex],
3453                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3454                         else
3455                                 writel((MSIxIndex << 24) |
3456                                         fusion->last_reply_idx[MSIxIndex],
3457                                         instance->reply_post_host_index_addr[0]);
3458                         threshold_reply_count = 0;
3459                 }
3460         }
3461
3462         if (!num_completed)
3463                 return IRQ_NONE;
3464
3465         wmb();
3466         if (instance->msix_combined)
3467                 writel(((MSIxIndex & 0x7) << 24) |
3468                         fusion->last_reply_idx[MSIxIndex],
3469                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3470         else
3471                 writel((MSIxIndex << 24) |
3472                         fusion->last_reply_idx[MSIxIndex],
3473                         instance->reply_post_host_index_addr[0]);
3474         megasas_check_and_restore_queue_depth(instance);
3475         return IRQ_HANDLED;
3476 }
3477
3478 /**
3479  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3480  * @instance:                   Adapter soft state
3481  */
3482 void megasas_sync_irqs(unsigned long instance_addr)
3483 {
3484         u32 count, i;
3485         struct megasas_instance *instance =
3486                 (struct megasas_instance *)instance_addr;
3487
3488         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3489
3490         for (i = 0; i < count; i++)
3491                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3492 }
3493
3494 /**
3495  * megasas_complete_cmd_dpc_fusion -    Completes command
3496  * @instance:                   Adapter soft state
3497  *
3498  * Tasklet to complete cmds
3499  */
3500 void
3501 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3502 {
3503         struct megasas_instance *instance =
3504                 (struct megasas_instance *)instance_addr;
3505         unsigned long flags;
3506         u32 count, MSIxIndex;
3507
3508         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3509
3510         /* If we have already declared adapter dead, donot complete cmds */
3511         spin_lock_irqsave(&instance->hba_lock, flags);
3512         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
3513                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3514                 return;
3515         }
3516         spin_unlock_irqrestore(&instance->hba_lock, flags);
3517
3518         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3519                 complete_cmd_fusion(instance, MSIxIndex);
3520 }
3521
3522 /**
3523  * megasas_isr_fusion - isr entry point
3524  */
3525 irqreturn_t megasas_isr_fusion(int irq, void *devp)
3526 {
3527         struct megasas_irq_context *irq_context = devp;
3528         struct megasas_instance *instance = irq_context->instance;
3529         u32 mfiStatus, fw_state, dma_state;
3530
3531         if (instance->mask_interrupts)
3532                 return IRQ_NONE;
3533
3534         if (!instance->msix_vectors) {
3535                 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
3536                 if (!mfiStatus)
3537                         return IRQ_NONE;
3538         }
3539
3540         /* If we are resetting, bail */
3541         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3542                 instance->instancet->clear_intr(instance->reg_set);
3543                 return IRQ_HANDLED;
3544         }
3545
3546         if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
3547                 instance->instancet->clear_intr(instance->reg_set);
3548                 /* If we didn't complete any commands, check for FW fault */
3549                 fw_state = instance->instancet->read_fw_status_reg(
3550                         instance->reg_set) & MFI_STATE_MASK;
3551                 dma_state = instance->instancet->read_fw_status_reg
3552                         (instance->reg_set) & MFI_STATE_DMADONE;
3553                 if (instance->crash_dump_drv_support &&
3554                         instance->crash_dump_app_support) {
3555                         /* Start collecting crash, if DMA bit is done */
3556                         if ((fw_state == MFI_STATE_FAULT) && dma_state)
3557                                 schedule_work(&instance->crash_init);
3558                         else if (fw_state == MFI_STATE_FAULT) {
3559                                 if (instance->unload == 0)
3560                                         schedule_work(&instance->work_init);
3561                         }
3562                 } else if (fw_state == MFI_STATE_FAULT) {
3563                         dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt"
3564                                "for scsi%d\n", instance->host->host_no);
3565                         if (instance->unload == 0)
3566                                 schedule_work(&instance->work_init);
3567                 }
3568         }
3569
3570         return IRQ_HANDLED;
3571 }
3572
3573 /**
3574  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3575  * @instance:                   Adapter soft state
3576  * mfi_cmd:                     megasas_cmd pointer
3577  *
3578  */
3579 void
3580 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3581                         struct megasas_cmd *mfi_cmd)
3582 {
3583         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3584         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3585         struct megasas_cmd_fusion *cmd;
3586         struct fusion_context *fusion;
3587         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3588
3589         fusion = instance->ctrl_context;
3590
3591         cmd = megasas_get_cmd_fusion(instance,
3592                         instance->max_scsi_cmds + mfi_cmd->index);
3593
3594         /*  Save the smid. To be used for returning the cmd */
3595         mfi_cmd->context.smid = cmd->index;
3596
3597         /*
3598          * For cmds where the flag is set, store the flag and check
3599          * on completion. For cmds with this flag, don't call
3600          * megasas_complete_cmd
3601          */
3602
3603         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3604                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3605
3606         io_req = cmd->io_request;
3607
3608         if (instance->adapter_type >= INVADER_SERIES) {
3609                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3610                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3611                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3612                 sgl_ptr_end->Flags = 0;
3613         }
3614
3615         mpi25_ieee_chain =
3616           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3617
3618         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3619         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3620                                        SGL) / 4;
3621         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3622
3623         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3624
3625         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3626                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3627
3628         mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
3629 }
3630
3631 /**
3632  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3633  * @instance:                   Adapter soft state
3634  * @cmd:                        mfi cmd to build
3635  *
3636  */
3637 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3638 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3639 {
3640         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3641         u16 index;
3642
3643         build_mpt_mfi_pass_thru(instance, cmd);
3644         index = cmd->context.smid;
3645
3646         req_desc = megasas_get_request_descriptor(instance, index - 1);
3647
3648         req_desc->Words = 0;
3649         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3650                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3651
3652         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3653
3654         return req_desc;
3655 }
3656
3657 /**
3658  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3659  * @instance:                   Adapter soft state
3660  * @cmd:                        mfi cmd pointer
3661  *
3662  */
3663 void
3664 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3665                           struct megasas_cmd *cmd)
3666 {
3667         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3668
3669         req_desc = build_mpt_cmd(instance, cmd);
3670
3671         megasas_fire_cmd_fusion(instance, req_desc);
3672         return;
3673 }
3674
3675 /**
3676  * megasas_release_fusion -     Reverses the FW initialization
3677  * @instance:                   Adapter soft state
3678  */
3679 void
3680 megasas_release_fusion(struct megasas_instance *instance)
3681 {
3682         megasas_free_ioc_init_cmd(instance);
3683         megasas_free_cmds(instance);
3684         megasas_free_cmds_fusion(instance);
3685
3686         iounmap(instance->reg_set);
3687
3688         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3689 }
3690
3691 /**
3692  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3693  * @regs:                       MFI register set
3694  */
3695 static u32
3696 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
3697 {
3698         return readl(&(regs)->outbound_scratch_pad);
3699 }
3700
3701 /**
3702  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
3703  * @instance:                           Controller's soft instance
3704  * return:                              Number of allocated host crash buffers
3705  */
3706 static void
3707 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3708 {
3709         unsigned int i;
3710
3711         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3712                 instance->crash_buf[i] = vzalloc(CRASH_DMA_BUF_SIZE);
3713                 if (!instance->crash_buf[i]) {
3714                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3715                                 "memory allocation failed at index %d\n", i);
3716                         break;
3717                 }
3718         }
3719         instance->drv_buf_alloc = i;
3720 }
3721
3722 /**
3723  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
3724  * @instance:                           Controller's soft instance
3725  */
3726 void
3727 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3728 {
3729         unsigned int i;
3730         for (i = 0; i < instance->drv_buf_alloc; i++) {
3731                 if (instance->crash_buf[i])
3732                         vfree(instance->crash_buf[i]);
3733         }
3734         instance->drv_buf_index = 0;
3735         instance->drv_buf_alloc = 0;
3736         instance->fw_crash_state = UNAVAILABLE;
3737         instance->fw_crash_buffer_size = 0;
3738 }
3739
3740 /**
3741  * megasas_adp_reset_fusion -   For controller reset
3742  * @regs:                               MFI register set
3743  */
3744 static int
3745 megasas_adp_reset_fusion(struct megasas_instance *instance,
3746                          struct megasas_register_set __iomem *regs)
3747 {
3748         u32 host_diag, abs_state, retry;
3749
3750         /* Now try to reset the chip */
3751         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3752         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3753         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3754         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3755         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3756         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3757         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3758
3759         /* Check that the diag write enable (DRWE) bit is on */
3760         host_diag = readl(&instance->reg_set->fusion_host_diag);
3761         retry = 0;
3762         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
3763                 msleep(100);
3764                 host_diag = readl(&instance->reg_set->fusion_host_diag);
3765                 if (retry++ == 100) {
3766                         dev_warn(&instance->pdev->dev,
3767                                 "Host diag unlock failed from %s %d\n",
3768                                 __func__, __LINE__);
3769                         break;
3770                 }
3771         }
3772         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
3773                 return -1;
3774
3775         /* Send chip reset command */
3776         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
3777                 &instance->reg_set->fusion_host_diag);
3778         msleep(3000);
3779
3780         /* Make sure reset adapter bit is cleared */
3781         host_diag = readl(&instance->reg_set->fusion_host_diag);
3782         retry = 0;
3783         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
3784                 msleep(100);
3785                 host_diag = readl(&instance->reg_set->fusion_host_diag);
3786                 if (retry++ == 1000) {
3787                         dev_warn(&instance->pdev->dev,
3788                                 "Diag reset adapter never cleared %s %d\n",
3789                                 __func__, __LINE__);
3790                         break;
3791                 }
3792         }
3793         if (host_diag & HOST_DIAG_RESET_ADAPTER)
3794                 return -1;
3795
3796         abs_state = instance->instancet->read_fw_status_reg(instance->reg_set)
3797                         & MFI_STATE_MASK;
3798         retry = 0;
3799
3800         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
3801                 msleep(100);
3802                 abs_state = instance->instancet->
3803                         read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
3804         }
3805         if (abs_state <= MFI_STATE_FW_INIT) {
3806                 dev_warn(&instance->pdev->dev,
3807                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
3808                         abs_state, __func__, __LINE__);
3809                 return -1;
3810         }
3811
3812         return 0;
3813 }
3814
3815 /**
3816  * megasas_check_reset_fusion - For controller reset check
3817  * @regs:                               MFI register set
3818  */
3819 static int
3820 megasas_check_reset_fusion(struct megasas_instance *instance,
3821                            struct megasas_register_set __iomem *regs)
3822 {
3823         return 0;
3824 }
3825
3826 /* This function waits for outstanding commands on fusion to complete */
3827 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
3828                                         int reason, int *convert)
3829 {
3830         int i, outstanding, retval = 0, hb_seconds_missed = 0;
3831         u32 fw_state;
3832
3833         for (i = 0; i < resetwaittime; i++) {
3834                 /* Check if firmware is in fault state */
3835                 fw_state = instance->instancet->read_fw_status_reg(
3836                         instance->reg_set) & MFI_STATE_MASK;
3837                 if (fw_state == MFI_STATE_FAULT) {
3838                         dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
3839                                " will reset adapter scsi%d.\n",
3840                                 instance->host->host_no);
3841                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3842                         if (instance->requestorId && reason) {
3843                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
3844                                 " state while polling during"
3845                                 " I/O timeout handling for %d\n",
3846                                 instance->host->host_no);
3847                                 *convert = 1;
3848                         }
3849
3850                         retval = 1;
3851                         goto out;
3852                 }
3853
3854                 if (reason == MFI_IO_TIMEOUT_OCR) {
3855                         dev_info(&instance->pdev->dev,
3856                                 "MFI IO is timed out, initiating OCR\n");
3857                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3858                         retval = 1;
3859                         goto out;
3860                 }
3861
3862                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
3863                 if (instance->requestorId && !reason) {
3864                         retval = 1;
3865                         goto out;
3866                 }
3867
3868                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
3869                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
3870                         if (instance->hb_host_mem->HB.fwCounter !=
3871                             instance->hb_host_mem->HB.driverCounter) {
3872                                 instance->hb_host_mem->HB.driverCounter =
3873                                         instance->hb_host_mem->HB.fwCounter;
3874                                 hb_seconds_missed = 0;
3875                         } else {
3876                                 hb_seconds_missed++;
3877                                 if (hb_seconds_missed ==
3878                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
3879                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
3880                                                " Heartbeat never completed "
3881                                                " while polling during I/O "
3882                                                " timeout handling for "
3883                                                "scsi%d.\n",
3884                                                instance->host->host_no);
3885                                                *convert = 1;
3886                                                retval = 1;
3887                                                goto out;
3888                                 }
3889                         }
3890                 }
3891
3892                 megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3893                 outstanding = atomic_read(&instance->fw_outstanding);
3894                 if (!outstanding)
3895                         goto out;
3896
3897                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
3898                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
3899                                "commands to complete for scsi%d\n", i,
3900                                outstanding, instance->host->host_no);
3901                 }
3902                 msleep(1000);
3903         }
3904
3905         if (atomic_read(&instance->fw_outstanding)) {
3906                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
3907                        "will reset adapter scsi%d.\n",
3908                        instance->host->host_no);
3909                 *convert = 1;
3910                 retval = 1;
3911         }
3912 out:
3913         return retval;
3914 }
3915
3916 void  megasas_reset_reply_desc(struct megasas_instance *instance)
3917 {
3918         int i, j, count;
3919         struct fusion_context *fusion;
3920         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
3921
3922         fusion = instance->ctrl_context;
3923         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3924         for (i = 0 ; i < count ; i++) {
3925                 fusion->last_reply_idx[i] = 0;
3926                 reply_desc = fusion->reply_frames_desc[i];
3927                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
3928                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
3929         }
3930 }
3931
3932 /*
3933  * megasas_refire_mgmt_cmd :    Re-fire management commands
3934  * @instance:                           Controller's soft instance
3935 */
3936 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
3937 {
3938         int j;
3939         struct megasas_cmd_fusion *cmd_fusion;
3940         struct fusion_context *fusion;
3941         struct megasas_cmd *cmd_mfi;
3942         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3943         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
3944         u16 smid;
3945         bool refire_cmd = 0;
3946         u8 result;
3947         u32 opcode = 0;
3948
3949         fusion = instance->ctrl_context;
3950
3951         /* Re-fire management commands.
3952          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
3953          */
3954         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
3955                 cmd_fusion = fusion->cmd_list[j];
3956                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3957                 smid = le16_to_cpu(cmd_mfi->context.smid);
3958                 result = REFIRE_CMD;
3959
3960                 if (!smid)
3961                         continue;
3962
3963                 req_desc = megasas_get_request_descriptor(instance, smid - 1);
3964
3965                 switch (cmd_mfi->frame->hdr.cmd) {
3966                 case MFI_CMD_DCMD:
3967                         opcode = le32_to_cpu(cmd_mfi->frame->dcmd.opcode);
3968                          /* Do not refire shutdown command */
3969                         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
3970                                 cmd_mfi->frame->dcmd.cmd_status = MFI_STAT_OK;
3971                                 result = COMPLETE_CMD;
3972                                 break;
3973                         }
3974
3975                         refire_cmd = ((opcode != MR_DCMD_LD_MAP_GET_INFO)) &&
3976                                       (opcode != MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3977                                       !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
3978
3979                         if (!refire_cmd)
3980                                 result = RETURN_CMD;
3981
3982                         break;
3983                 case MFI_CMD_NVME:
3984                         if (!instance->support_nvme_passthru) {
3985                                 cmd_mfi->frame->hdr.cmd_status = MFI_STAT_INVALID_CMD;
3986                                 result = COMPLETE_CMD;
3987                         }
3988
3989                         break;
3990                 default:
3991                         break;
3992                 }
3993
3994                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3995                                 cmd_fusion->io_request;
3996                 if (scsi_io_req->Function == MPI2_FUNCTION_SCSI_TASK_MGMT)
3997                         result = RETURN_CMD;
3998
3999                 switch (result) {
4000                 case REFIRE_CMD:
4001                         megasas_fire_cmd_fusion(instance, req_desc);
4002                         break;
4003                 case RETURN_CMD:
4004                         megasas_return_cmd(instance, cmd_mfi);
4005                         break;
4006                 case COMPLETE_CMD:
4007                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
4008                         break;
4009                 }
4010         }
4011 }
4012
4013 /*
4014  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
4015  * @instance: per adapter struct
4016  * @channel: the channel assigned by the OS
4017  * @id: the id assigned by the OS
4018  *
4019  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
4020  */
4021
4022 static int megasas_track_scsiio(struct megasas_instance *instance,
4023                 int id, int channel)
4024 {
4025         int i, found = 0;
4026         struct megasas_cmd_fusion *cmd_fusion;
4027         struct fusion_context *fusion;
4028         fusion = instance->ctrl_context;
4029
4030         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4031                 cmd_fusion = fusion->cmd_list[i];
4032                 if (cmd_fusion->scmd &&
4033                         (cmd_fusion->scmd->device->id == id &&
4034                         cmd_fusion->scmd->device->channel == channel)) {
4035                         dev_info(&instance->pdev->dev,
4036                                 "SCSI commands pending to target"
4037                                 "channel %d id %d \tSMID: 0x%x\n",
4038                                 channel, id, cmd_fusion->index);
4039                         scsi_print_command(cmd_fusion->scmd);
4040                         found = 1;
4041                         break;
4042                 }
4043         }
4044
4045         return found ? FAILED : SUCCESS;
4046 }
4047
4048 /**
4049  * megasas_tm_response_code - translation of device response code
4050  * @ioc: per adapter object
4051  * @mpi_reply: MPI reply returned by firmware
4052  *
4053  * Return nothing.
4054  */
4055 static void
4056 megasas_tm_response_code(struct megasas_instance *instance,
4057                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
4058 {
4059         char *desc;
4060
4061         switch (mpi_reply->ResponseCode) {
4062         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
4063                 desc = "task management request completed";
4064                 break;
4065         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
4066                 desc = "invalid frame";
4067                 break;
4068         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
4069                 desc = "task management request not supported";
4070                 break;
4071         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
4072                 desc = "task management request failed";
4073                 break;
4074         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
4075                 desc = "task management request succeeded";
4076                 break;
4077         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
4078                 desc = "invalid lun";
4079                 break;
4080         case 0xA:
4081                 desc = "overlapped tag attempted";
4082                 break;
4083         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
4084                 desc = "task queued, however not sent to target";
4085                 break;
4086         default:
4087                 desc = "unknown";
4088                 break;
4089         }
4090         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
4091                 mpi_reply->ResponseCode, desc);
4092         dev_dbg(&instance->pdev->dev,
4093                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
4094                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
4095                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
4096                 mpi_reply->Function, mpi_reply->TaskType,
4097                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
4098 }
4099
4100 /**
4101  * megasas_issue_tm - main routine for sending tm requests
4102  * @instance: per adapter struct
4103  * @device_handle: device handle
4104  * @channel: the channel assigned by the OS
4105  * @id: the id assigned by the OS
4106  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
4107  * @smid_task: smid assigned to the task
4108  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
4109  * Context: user
4110  *
4111  * MegaRaid use MPT interface for Task Magement request.
4112  * A generic API for sending task management requests to firmware.
4113  *
4114  * Return SUCCESS or FAILED.
4115  */
4116 static int
4117 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
4118         uint channel, uint id, u16 smid_task, u8 type,
4119         struct MR_PRIV_DEVICE *mr_device_priv_data)
4120 {
4121         struct MR_TASK_MANAGE_REQUEST *mr_request;
4122         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
4123         unsigned long timeleft;
4124         struct megasas_cmd_fusion *cmd_fusion;
4125         struct megasas_cmd *cmd_mfi;
4126         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
4127         struct fusion_context *fusion = NULL;
4128         struct megasas_cmd_fusion *scsi_lookup;
4129         int rc;
4130         int timeout = MEGASAS_DEFAULT_TM_TIMEOUT;
4131         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
4132
4133         fusion = instance->ctrl_context;
4134
4135         cmd_mfi = megasas_get_cmd(instance);
4136
4137         if (!cmd_mfi) {
4138                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4139                         __func__, __LINE__);
4140                 return -ENOMEM;
4141         }
4142
4143         cmd_fusion = megasas_get_cmd_fusion(instance,
4144                         instance->max_scsi_cmds + cmd_mfi->index);
4145
4146         /*  Save the smid. To be used for returning the cmd */
4147         cmd_mfi->context.smid = cmd_fusion->index;
4148
4149         req_desc = megasas_get_request_descriptor(instance,
4150                         (cmd_fusion->index - 1));
4151
4152         cmd_fusion->request_desc = req_desc;
4153         req_desc->Words = 0;
4154
4155         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
4156         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
4157         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
4158         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
4159         mpi_request->DevHandle = cpu_to_le16(device_handle);
4160         mpi_request->TaskType = type;
4161         mpi_request->TaskMID = cpu_to_le16(smid_task);
4162         mpi_request->LUN[1] = 0;
4163
4164
4165         req_desc = cmd_fusion->request_desc;
4166         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
4167         req_desc->HighPriority.RequestFlags =
4168                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
4169                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
4170         req_desc->HighPriority.MSIxIndex =  0;
4171         req_desc->HighPriority.LMID = 0;
4172         req_desc->HighPriority.Reserved1 = 0;
4173
4174         if (channel < MEGASAS_MAX_PD_CHANNELS)
4175                 mr_request->tmReqFlags.isTMForPD = 1;
4176         else
4177                 mr_request->tmReqFlags.isTMForLD = 1;
4178
4179         init_completion(&cmd_fusion->done);
4180         megasas_fire_cmd_fusion(instance, req_desc);
4181
4182         switch (type) {
4183         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4184                 timeout = mr_device_priv_data->task_abort_tmo;
4185                 break;
4186         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4187                 timeout = mr_device_priv_data->target_reset_tmo;
4188                 break;
4189         }
4190
4191         timeleft = wait_for_completion_timeout(&cmd_fusion->done, timeout * HZ);
4192
4193         if (!timeleft) {
4194                 dev_err(&instance->pdev->dev,
4195                         "task mgmt type 0x%x timed out\n", type);
4196                 mutex_unlock(&instance->reset_mutex);
4197                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
4198                 mutex_lock(&instance->reset_mutex);
4199                 return rc;
4200         }
4201
4202         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
4203         megasas_tm_response_code(instance, mpi_reply);
4204
4205         megasas_return_cmd(instance, cmd_mfi);
4206         rc = SUCCESS;
4207         switch (type) {
4208         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
4209                 scsi_lookup = fusion->cmd_list[smid_task - 1];
4210
4211                 if (scsi_lookup->scmd == NULL)
4212                         break;
4213                 else {
4214                         instance->instancet->disable_intr(instance);
4215                         megasas_sync_irqs((unsigned long)instance);
4216                         instance->instancet->enable_intr(instance);
4217                         if (scsi_lookup->scmd == NULL)
4218                                 break;
4219                 }
4220                 rc = FAILED;
4221                 break;
4222
4223         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
4224                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
4225                         break;
4226                 instance->instancet->disable_intr(instance);
4227                 megasas_sync_irqs((unsigned long)instance);
4228                 rc = megasas_track_scsiio(instance, id, channel);
4229                 instance->instancet->enable_intr(instance);
4230
4231                 break;
4232         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
4233         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
4234                 break;
4235         default:
4236                 rc = FAILED;
4237                 break;
4238         }
4239
4240         return rc;
4241
4242 }
4243
4244 /*
4245  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
4246  * @instance: per adapter struct
4247  *
4248  * Return Non Zero index, if SMID found in outstanding commands
4249  */
4250 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
4251 {
4252         int i, ret = 0;
4253         struct megasas_instance *instance;
4254         struct megasas_cmd_fusion *cmd_fusion;
4255         struct fusion_context *fusion;
4256
4257         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4258
4259         fusion = instance->ctrl_context;
4260
4261         for (i = 0; i < instance->max_scsi_cmds; i++) {
4262                 cmd_fusion = fusion->cmd_list[i];
4263                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
4264                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
4265                                 " SMID: %d\n", cmd_fusion->index);
4266                         ret = cmd_fusion->index;
4267                         break;
4268                 }
4269         }
4270
4271         return ret;
4272 }
4273
4274 /*
4275 * megasas_get_tm_devhandle - Get devhandle for TM request
4276 * @sdev-                     OS provided scsi device
4277 *
4278 * Returns-                   devhandle/targetID of SCSI device
4279 */
4280 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
4281 {
4282         u16 pd_index = 0;
4283         u32 device_id;
4284         struct megasas_instance *instance;
4285         struct fusion_context *fusion;
4286         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
4287         u16 devhandle = (u16)ULONG_MAX;
4288
4289         instance = (struct megasas_instance *)sdev->host->hostdata;
4290         fusion = instance->ctrl_context;
4291
4292         if (!MEGASAS_IS_LOGICAL(sdev)) {
4293                 if (instance->use_seqnum_jbod_fp) {
4294                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
4295                                     + sdev->id;
4296                         pd_sync = (void *)fusion->pd_seq_sync
4297                                         [(instance->pd_seq_map_id - 1) & 1];
4298                         devhandle = pd_sync->seq[pd_index].devHandle;
4299                 } else
4300                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
4301                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
4302         } else {
4303                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
4304                                 + sdev->id;
4305                 devhandle = device_id;
4306         }
4307
4308         return devhandle;
4309 }
4310
4311 /*
4312  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
4313  * @scmd : pointer to scsi command object
4314  *
4315  * Return SUCCESS, if command aborted else FAILED
4316  */
4317
4318 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
4319 {
4320         struct megasas_instance *instance;
4321         u16 smid, devhandle;
4322         struct fusion_context *fusion;
4323         int ret;
4324         struct MR_PRIV_DEVICE *mr_device_priv_data;
4325         mr_device_priv_data = scmd->device->hostdata;
4326
4327
4328         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4329         fusion = instance->ctrl_context;
4330
4331         scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd);
4332         scsi_print_command(scmd);
4333
4334         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4335                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4336                 "SCSI host:%d\n", instance->host->host_no);
4337                 ret = FAILED;
4338                 return ret;
4339         }
4340
4341         if (!mr_device_priv_data) {
4342                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4343                         "scmd(%p)\n", scmd);
4344                 scmd->result = DID_NO_CONNECT << 16;
4345                 ret = SUCCESS;
4346                 goto out;
4347         }
4348
4349
4350         if (!mr_device_priv_data->is_tm_capable) {
4351                 ret = FAILED;
4352                 goto out;
4353         }
4354
4355         mutex_lock(&instance->reset_mutex);
4356
4357         smid = megasas_fusion_smid_lookup(scmd);
4358
4359         if (!smid) {
4360                 ret = SUCCESS;
4361                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
4362                         " issued is not found in oustanding commands\n");
4363                 mutex_unlock(&instance->reset_mutex);
4364                 goto out;
4365         }
4366
4367         devhandle = megasas_get_tm_devhandle(scmd->device);
4368
4369         if (devhandle == (u16)ULONG_MAX) {
4370                 ret = SUCCESS;
4371                 sdev_printk(KERN_INFO, scmd->device,
4372                         "task abort issued for invalid devhandle\n");
4373                 mutex_unlock(&instance->reset_mutex);
4374                 goto out;
4375         }
4376         sdev_printk(KERN_INFO, scmd->device,
4377                 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
4378                 scmd, devhandle);
4379
4380         mr_device_priv_data->tm_busy = 1;
4381         ret = megasas_issue_tm(instance, devhandle,
4382                         scmd->device->channel, scmd->device->id, smid,
4383                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
4384                         mr_device_priv_data);
4385         mr_device_priv_data->tm_busy = 0;
4386
4387         mutex_unlock(&instance->reset_mutex);
4388 out:
4389         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
4390                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4391
4392         return ret;
4393 }
4394
4395 /*
4396  * megasas_reset_target_fusion : target reset function for fusion adapters
4397  * scmd: SCSI command pointer
4398  *
4399  * Returns SUCCESS if all commands associated with target aborted else FAILED
4400  */
4401
4402 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4403 {
4404
4405         struct megasas_instance *instance;
4406         int ret = FAILED;
4407         u16 devhandle;
4408         struct fusion_context *fusion;
4409         struct MR_PRIV_DEVICE *mr_device_priv_data;
4410         mr_device_priv_data = scmd->device->hostdata;
4411
4412         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4413         fusion = instance->ctrl_context;
4414
4415         sdev_printk(KERN_INFO, scmd->device,
4416                     "target reset called for scmd(%p)\n", scmd);
4417
4418         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4419                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4420                 "SCSI host:%d\n", instance->host->host_no);
4421                 ret = FAILED;
4422                 return ret;
4423         }
4424
4425         if (!mr_device_priv_data) {
4426                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4427                         "scmd(%p)\n", scmd);
4428                 scmd->result = DID_NO_CONNECT << 16;
4429                 ret = SUCCESS;
4430                 goto out;
4431         }
4432
4433
4434         if (!mr_device_priv_data->is_tm_capable) {
4435                 ret = FAILED;
4436                 goto out;
4437         }
4438
4439         mutex_lock(&instance->reset_mutex);
4440         devhandle = megasas_get_tm_devhandle(scmd->device);
4441
4442         if (devhandle == (u16)ULONG_MAX) {
4443                 ret = SUCCESS;
4444                 sdev_printk(KERN_INFO, scmd->device,
4445                         "target reset issued for invalid devhandle\n");
4446                 mutex_unlock(&instance->reset_mutex);
4447                 goto out;
4448         }
4449
4450         sdev_printk(KERN_INFO, scmd->device,
4451                 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
4452                 scmd, devhandle);
4453         mr_device_priv_data->tm_busy = 1;
4454         ret = megasas_issue_tm(instance, devhandle,
4455                         scmd->device->channel, scmd->device->id, 0,
4456                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
4457                         mr_device_priv_data);
4458         mr_device_priv_data->tm_busy = 0;
4459         mutex_unlock(&instance->reset_mutex);
4460 out:
4461         scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
4462                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4463
4464         return ret;
4465 }
4466
4467 /*SRIOV get other instance in cluster if any*/
4468 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4469 {
4470         int i;
4471
4472         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4473                 if (megasas_mgmt_info.instance[i] &&
4474                         (megasas_mgmt_info.instance[i] != instance) &&
4475                          megasas_mgmt_info.instance[i]->requestorId &&
4476                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4477                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4478                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4479                         return megasas_mgmt_info.instance[i];
4480         }
4481         return NULL;
4482 }
4483
4484 /* Check for a second path that is currently UP */
4485 int megasas_check_mpio_paths(struct megasas_instance *instance,
4486         struct scsi_cmnd *scmd)
4487 {
4488         struct megasas_instance *peer_instance = NULL;
4489         int retval = (DID_REQUEUE << 16);
4490
4491         if (instance->peerIsPresent) {
4492                 peer_instance = megasas_get_peer_instance(instance);
4493                 if ((peer_instance) &&
4494                         (atomic_read(&peer_instance->adprecovery) ==
4495                         MEGASAS_HBA_OPERATIONAL))
4496                         retval = (DID_NO_CONNECT << 16);
4497         }
4498         return retval;
4499 }
4500
4501 /* Core fusion reset function */
4502 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4503 {
4504         int retval = SUCCESS, i, j, convert = 0;
4505         struct megasas_instance *instance;
4506         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4507         struct fusion_context *fusion;
4508         u32 abs_state, status_reg, reset_adapter;
4509         u32 io_timeout_in_crash_mode = 0;
4510         struct scsi_cmnd *scmd_local = NULL;
4511         struct scsi_device *sdev;
4512         int ret_target_prop = DCMD_FAILED;
4513         bool is_target_prop = false;
4514
4515         instance = (struct megasas_instance *)shost->hostdata;
4516         fusion = instance->ctrl_context;
4517
4518         mutex_lock(&instance->reset_mutex);
4519
4520         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4521                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4522                        "returning FAILED for scsi%d.\n",
4523                         instance->host->host_no);
4524                 mutex_unlock(&instance->reset_mutex);
4525                 return FAILED;
4526         }
4527         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
4528         abs_state = status_reg & MFI_STATE_MASK;
4529
4530         /* IO timeout detected, forcibly put FW in FAULT state */
4531         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4532                 instance->crash_dump_app_support && reason) {
4533                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4534                         "forcibly FAULT Firmware\n");
4535                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4536                 status_reg = readl(&instance->reg_set->doorbell);
4537                 writel(status_reg | MFI_STATE_FORCE_OCR,
4538                         &instance->reg_set->doorbell);
4539                 readl(&instance->reg_set->doorbell);
4540                 mutex_unlock(&instance->reset_mutex);
4541                 do {
4542                         ssleep(3);
4543                         io_timeout_in_crash_mode++;
4544                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4545                                 "seconds for crash dump collection and OCR "
4546                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4547                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4548                         (io_timeout_in_crash_mode < 80));
4549
4550                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4551                         dev_info(&instance->pdev->dev, "OCR done for IO "
4552                                 "timeout case\n");
4553                         retval = SUCCESS;
4554                 } else {
4555                         dev_info(&instance->pdev->dev, "Controller is not "
4556                                 "operational after 240 seconds wait for IO "
4557                                 "timeout case in FW crash dump mode\n do "
4558                                 "OCR/kill adapter\n");
4559                         retval = megasas_reset_fusion(shost, 0);
4560                 }
4561                 return retval;
4562         }
4563
4564         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4565                 del_timer_sync(&instance->sriov_heartbeat_timer);
4566         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4567         set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
4568         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4569         instance->instancet->disable_intr(instance);
4570         megasas_sync_irqs((unsigned long)instance);
4571
4572         /* First try waiting for commands to complete */
4573         if (megasas_wait_for_outstanding_fusion(instance, reason,
4574                                                 &convert)) {
4575                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4576                 dev_warn(&instance->pdev->dev, "resetting fusion "
4577                        "adapter scsi%d.\n", instance->host->host_no);
4578                 if (convert)
4579                         reason = 0;
4580
4581                 if (megasas_dbg_lvl & OCR_LOGS)
4582                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4583
4584                 /* Now return commands back to the OS */
4585                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4586                         cmd_fusion = fusion->cmd_list[i];
4587                         /*check for extra commands issued by driver*/
4588                         if (instance->adapter_type == VENTURA_SERIES) {
4589                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4590                                 megasas_return_cmd_fusion(instance, r1_cmd);
4591                         }
4592                         scmd_local = cmd_fusion->scmd;
4593                         if (cmd_fusion->scmd) {
4594                                 if (megasas_dbg_lvl & OCR_LOGS) {
4595                                         sdev_printk(KERN_INFO,
4596                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4597                                                 cmd_fusion->index);
4598                                         scsi_print_command(cmd_fusion->scmd);
4599                                 }
4600
4601                                 scmd_local->result =
4602                                         megasas_check_mpio_paths(instance,
4603                                                         scmd_local);
4604                                 if (instance->ldio_threshold &&
4605                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4606                                         atomic_dec(&instance->ldio_outstanding);
4607                                 megasas_return_cmd_fusion(instance, cmd_fusion);
4608                                 scsi_dma_unmap(scmd_local);
4609                                 scmd_local->scsi_done(scmd_local);
4610                         }
4611                 }
4612
4613                 atomic_set(&instance->fw_outstanding, 0);
4614
4615                 status_reg = instance->instancet->read_fw_status_reg(
4616                         instance->reg_set);
4617                 abs_state = status_reg & MFI_STATE_MASK;
4618                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4619                 if (instance->disableOnlineCtrlReset ||
4620                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4621                         /* Reset not supported, kill adapter */
4622                         dev_warn(&instance->pdev->dev, "Reset not supported"
4623                                ", killing adapter scsi%d.\n",
4624                                 instance->host->host_no);
4625                         megaraid_sas_kill_hba(instance);
4626                         instance->skip_heartbeat_timer_del = 1;
4627                         retval = FAILED;
4628                         goto out;
4629                 }
4630
4631                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4632                 if (instance->requestorId && !reason) {
4633                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4634                         goto transition_to_ready;
4635                 }
4636
4637                 /* Now try to reset the chip */
4638                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
4639
4640                         if (instance->instancet->adp_reset
4641                                 (instance, instance->reg_set))
4642                                 continue;
4643 transition_to_ready:
4644                         /* Wait for FW to become ready */
4645                         if (megasas_transition_to_ready(instance, 1)) {
4646                                 dev_warn(&instance->pdev->dev,
4647                                         "Failed to transition controller to ready for "
4648                                         "scsi%d.\n", instance->host->host_no);
4649                                 if (instance->requestorId && !reason)
4650                                         goto fail_kill_adapter;
4651                                 else
4652                                         continue;
4653                         }
4654                         megasas_reset_reply_desc(instance);
4655                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4656
4657                         if (megasas_ioc_init_fusion(instance)) {
4658                                 if (instance->requestorId && !reason)
4659                                         goto fail_kill_adapter;
4660                                 else
4661                                         continue;
4662                         }
4663
4664                         if (megasas_get_ctrl_info(instance)) {
4665                                 dev_info(&instance->pdev->dev,
4666                                         "Failed from %s %d\n",
4667                                         __func__, __LINE__);
4668                                 megaraid_sas_kill_hba(instance);
4669                                 retval = FAILED;
4670                                 goto out;
4671                         }
4672
4673                         megasas_refire_mgmt_cmd(instance);
4674
4675                         /* Reset load balance info */
4676                         if (fusion->load_balance_info)
4677                                 memset(fusion->load_balance_info, 0,
4678                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
4679                                        MAX_LOGICAL_DRIVES_EXT));
4680
4681                         if (!megasas_get_map_info(instance))
4682                                 megasas_sync_map_info(instance);
4683
4684                         megasas_setup_jbod_map(instance);
4685
4686                         /* reset stream detection array */
4687                         if (instance->adapter_type == VENTURA_SERIES) {
4688                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
4689                                         memset(fusion->stream_detect_by_ld[j],
4690                                         0, sizeof(struct LD_STREAM_DETECT));
4691                                  fusion->stream_detect_by_ld[j]->mru_bit_map
4692                                                 = MR_STREAM_BITMAP;
4693                                 }
4694                         }
4695
4696                         clear_bit(MEGASAS_FUSION_IN_RESET,
4697                                   &instance->reset_flags);
4698                         instance->instancet->enable_intr(instance);
4699
4700                         shost_for_each_device(sdev, shost) {
4701                                 if ((instance->tgt_prop) &&
4702                                     (instance->nvme_page_size))
4703                                         ret_target_prop = megasas_get_target_prop(instance, sdev);
4704
4705                                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
4706                                 megasas_set_dynamic_target_properties(sdev, is_target_prop);
4707                         }
4708
4709                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4710
4711                         dev_info(&instance->pdev->dev, "Interrupts are enabled and"
4712                                 " controller is OPERATIONAL for scsi:%d\n",
4713                                 instance->host->host_no);
4714
4715                         /* Restart SR-IOV heartbeat */
4716                         if (instance->requestorId) {
4717                                 if (!megasas_sriov_start_heartbeat(instance, 0))
4718                                         megasas_start_timer(instance);
4719                                 else
4720                                         instance->skip_heartbeat_timer_del = 1;
4721                         }
4722
4723                         if (instance->crash_dump_drv_support &&
4724                                 instance->crash_dump_app_support)
4725                                 megasas_set_crash_dump_params(instance,
4726                                         MR_CRASH_BUF_TURN_ON);
4727                         else
4728                                 megasas_set_crash_dump_params(instance,
4729                                         MR_CRASH_BUF_TURN_OFF);
4730
4731                         retval = SUCCESS;
4732
4733                         /* Adapter reset completed successfully */
4734                         dev_warn(&instance->pdev->dev,
4735                                  "Reset successful for scsi%d.\n",
4736                                  instance->host->host_no);
4737
4738                         goto out;
4739                 }
4740 fail_kill_adapter:
4741                 /* Reset failed, kill the adapter */
4742                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
4743                        "adapter scsi%d.\n", instance->host->host_no);
4744                 megaraid_sas_kill_hba(instance);
4745                 instance->skip_heartbeat_timer_del = 1;
4746                 retval = FAILED;
4747         } else {
4748                 /* For VF: Restart HB timer if we didn't OCR */
4749                 if (instance->requestorId) {
4750                         megasas_start_timer(instance);
4751                 }
4752                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4753                 instance->instancet->enable_intr(instance);
4754                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4755         }
4756 out:
4757         clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
4758         mutex_unlock(&instance->reset_mutex);
4759         return retval;
4760 }
4761
4762 /* Fusion Crash dump collection work queue */
4763 void  megasas_fusion_crash_dump_wq(struct work_struct *work)
4764 {
4765         struct megasas_instance *instance =
4766                 container_of(work, struct megasas_instance, crash_init);
4767         u32 status_reg;
4768         u8 partial_copy = 0;
4769
4770
4771         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
4772
4773         /*
4774          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
4775          * to host crash buffers
4776          */
4777         if (instance->drv_buf_index == 0) {
4778                 /* Buffer is already allocated for old Crash dump.
4779                  * Do OCR and do not wait for crash dump collection
4780                  */
4781                 if (instance->drv_buf_alloc) {
4782                         dev_info(&instance->pdev->dev, "earlier crash dump is "
4783                                 "not yet copied by application, ignoring this "
4784                                 "crash dump and initiating OCR\n");
4785                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4786                         writel(status_reg,
4787                                 &instance->reg_set->outbound_scratch_pad);
4788                         readl(&instance->reg_set->outbound_scratch_pad);
4789                         return;
4790                 }
4791                 megasas_alloc_host_crash_buffer(instance);
4792                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
4793                         "allocated: %d\n", instance->drv_buf_alloc);
4794         }
4795
4796         /*
4797          * Driver has allocated max buffers, which can be allocated
4798          * and FW has more crash dump data, then driver will
4799          * ignore the data.
4800          */
4801         if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
4802                 dev_info(&instance->pdev->dev, "Driver is done copying "
4803                         "the buffer: %d\n", instance->drv_buf_alloc);
4804                 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4805                 partial_copy = 1;
4806         } else {
4807                 memcpy(instance->crash_buf[instance->drv_buf_index],
4808                         instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
4809                 instance->drv_buf_index++;
4810                 status_reg &= ~MFI_STATE_DMADONE;
4811         }
4812
4813         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
4814                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
4815                         "of copied buffers: %d\n", instance->drv_buf_index);
4816                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
4817                 instance->fw_crash_state = AVAILABLE;
4818                 instance->drv_buf_index = 0;
4819                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
4820                 readl(&instance->reg_set->outbound_scratch_pad);
4821                 if (!partial_copy)
4822                         megasas_reset_fusion(instance->host, 0);
4823         } else {
4824                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
4825                 readl(&instance->reg_set->outbound_scratch_pad);
4826         }
4827 }
4828
4829
4830 /* Fusion OCR work queue */
4831 void megasas_fusion_ocr_wq(struct work_struct *work)
4832 {
4833         struct megasas_instance *instance =
4834                 container_of(work, struct megasas_instance, work_init);
4835
4836         megasas_reset_fusion(instance->host, 0);
4837 }
4838
4839 /* Allocate fusion context */
4840 int
4841 megasas_alloc_fusion_context(struct megasas_instance *instance)
4842 {
4843         struct fusion_context *fusion;
4844
4845         instance->ctrl_context = kzalloc(sizeof(struct fusion_context),
4846                                          GFP_KERNEL);
4847         if (!instance->ctrl_context) {
4848                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4849                         __func__, __LINE__);
4850                 return -ENOMEM;
4851         }
4852
4853         fusion = instance->ctrl_context;
4854
4855         fusion->log_to_span_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4856                                               sizeof(LD_SPAN_INFO));
4857         fusion->log_to_span =
4858                 (PLD_SPAN_INFO)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4859                                                 fusion->log_to_span_pages);
4860         if (!fusion->log_to_span) {
4861                 fusion->log_to_span =
4862                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
4863                                            sizeof(LD_SPAN_INFO)));
4864                 if (!fusion->log_to_span) {
4865                         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
4866                                 __func__, __LINE__);
4867                         return -ENOMEM;
4868                 }
4869         }
4870
4871         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4872                 sizeof(struct LD_LOAD_BALANCE_INFO));
4873         fusion->load_balance_info =
4874                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4875                 fusion->load_balance_info_pages);
4876         if (!fusion->load_balance_info) {
4877                 fusion->load_balance_info =
4878                         vzalloc(array_size(MAX_LOGICAL_DRIVES_EXT,
4879                                            sizeof(struct LD_LOAD_BALANCE_INFO)));
4880                 if (!fusion->load_balance_info)
4881                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
4882                                 "continuing without Load Balance support\n");
4883         }
4884
4885         return 0;
4886 }
4887
4888 void
4889 megasas_free_fusion_context(struct megasas_instance *instance)
4890 {
4891         struct fusion_context *fusion = instance->ctrl_context;
4892
4893         if (fusion) {
4894                 if (fusion->load_balance_info) {
4895                         if (is_vmalloc_addr(fusion->load_balance_info))
4896                                 vfree(fusion->load_balance_info);
4897                         else
4898                                 free_pages((ulong)fusion->load_balance_info,
4899                                         fusion->load_balance_info_pages);
4900                 }
4901
4902                 if (fusion->log_to_span) {
4903                         if (is_vmalloc_addr(fusion->log_to_span))
4904                                 vfree(fusion->log_to_span);
4905                         else
4906                                 free_pages((ulong)fusion->log_to_span,
4907                                            fusion->log_to_span_pages);
4908                 }
4909
4910                 kfree(fusion);
4911         }
4912 }
4913
4914 struct megasas_instance_template megasas_instance_template_fusion = {
4915         .enable_intr = megasas_enable_intr_fusion,
4916         .disable_intr = megasas_disable_intr_fusion,
4917         .clear_intr = megasas_clear_intr_fusion,
4918         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
4919         .adp_reset = megasas_adp_reset_fusion,
4920         .check_reset = megasas_check_reset_fusion,
4921         .service_isr = megasas_isr_fusion,
4922         .tasklet = megasas_complete_cmd_dpc_fusion,
4923         .init_adapter = megasas_init_adapter_fusion,
4924         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
4925         .issue_dcmd = megasas_issue_dcmd_fusion,
4926 };