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 void megasas_sriov_heartbeat_handler(unsigned long instance_addr);
  89 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
  90                                   int initial);
  91 void megasas_start_timer(struct megasas_instance *instance,
  92                         struct timer_list *timer,
  93                          void *fn, unsigned long interval);
  94 extern struct megasas_mgmt_info megasas_mgmt_info;
  95 extern unsigned int resetwaittime;
  96 extern unsigned int dual_qdepth_disable;
  97 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
  98 static void megasas_free_reply_fusion(struct megasas_instance *instance);
  99
 100
 101
 102 /**
 103  * megasas_enable_intr_fusion - Enables interrupts
 104  * @regs:                       MFI register set
 105  */
 106 void
 107 megasas_enable_intr_fusion(struct megasas_instance *instance)
 108 {
 109         struct megasas_register_set __iomem *regs;
 110         regs = instance->reg_set;
 111
 112         instance->mask_interrupts = 0;
 113         /* For Thunderbolt/Invader also clear intr on enable */
 114         writel(~0, &regs->outbound_intr_status);
 115         readl(&regs->outbound_intr_status);
 116
 117         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 118
 119         /* Dummy readl to force pci flush */
 120         readl(&regs->outbound_intr_mask);
 121 }
 122
 123 /**
 124  * megasas_disable_intr_fusion - Disables interrupt
 125  * @regs:                        MFI register set
 126  */
 127 void
 128 megasas_disable_intr_fusion(struct megasas_instance *instance)
 129 {
 130         u32 mask = 0xFFFFFFFF;
 131         u32 status;
 132         struct megasas_register_set __iomem *regs;
 133         regs = instance->reg_set;
 134         instance->mask_interrupts = 1;
 135
 136         writel(mask, &regs->outbound_intr_mask);
 137         /* Dummy readl to force pci flush */
 138         status = readl(&regs->outbound_intr_mask);
 139 }
 140
 141 int
 142 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
 143 {
 144         u32 status;
 145         /*
 146          * Check if it is our interrupt
 147          */
 148         status = readl(&regs->outbound_intr_status);
 149
 150         if (status & 1) {
 151                 writel(status, &regs->outbound_intr_status);
 152                 readl(&regs->outbound_intr_status);
 153                 return 1;
 154         }
 155         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 156                 return 0;
 157
 158         return 1;
 159 }
 160
 161 /**
 162  * megasas_get_cmd_fusion -     Get a command from the free pool
 163  * @instance:           Adapter soft state
 164  *
 165  * Returns a blk_tag indexed mpt frame
 166  */
 167 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 168                                                   *instance, u32 blk_tag)
 169 {
 170         struct fusion_context *fusion;
 171
 172         fusion = instance->ctrl_context;
 173         return fusion->cmd_list[blk_tag];
 174 }
 175
 176 /**
 177  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 178  * @instance:           Adapter soft state
 179  * @cmd:                Command packet to be returned to free command pool
 180  */
 181 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 182         struct megasas_cmd_fusion *cmd)
 183 {
 184         cmd->scmd = NULL;
 185         memset(cmd->io_request, 0, MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
 186         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 187         cmd->cmd_completed = false;
 188 }
 189
 190 /**
 191  * megasas_fire_cmd_fusion -    Sends command to the FW
 192  * @instance:                   Adapter soft state
 193  * @req_desc:                   32bit or 64bit Request descriptor
 194  *
 195  * Perform PCI Write. Ventura supports 32 bit Descriptor.
 196  * Prior to Ventura (12G) MR controller supports 64 bit Descriptor.
 197  */
 198
 199 static void
 200 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 201                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 202 {
 203         if (instance->is_ventura)
 204                 writel(le32_to_cpu(req_desc->u.low),
 205                         &instance->reg_set->inbound_single_queue_port);
 206         else {
 207 #if defined(writeq) && defined(CONFIG_64BIT)
 208                 u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
 209                                 le32_to_cpu(req_desc->u.low));
 210
 211                 writeq(req_data, &instance->reg_set->inbound_low_queue_port);
 212 #else
 213                 unsigned long flags;
 214                 spin_lock_irqsave(&instance->hba_lock, flags);
 215                 writel(le32_to_cpu(req_desc->u.low),
 216                         &instance->reg_set->inbound_low_queue_port);
 217                 writel(le32_to_cpu(req_desc->u.high),
 218                         &instance->reg_set->inbound_high_queue_port);
 219                 mmiowb();
 220                 spin_unlock_irqrestore(&instance->hba_lock, flags);
 221 #endif
 222         }
 223 }
 224
 225 /**
 226  * megasas_fusion_update_can_queue -    Do all Adapter Queue depth related calculations here
 227  * @instance:                                                   Adapter soft state
 228  * fw_boot_context:                                             Whether this function called during probe or after OCR
 229  *
 230  * This function is only for fusion controllers.
 231  * Update host can queue, if firmware downgrade max supported firmware commands.
 232  * Firmware upgrade case will be skiped because underlying firmware has
 233  * more resource than exposed to the OS.
 234  *
 235  */
 236 static void
 237 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
 238 {
 239         u16 cur_max_fw_cmds = 0;
 240         u16 ldio_threshold = 0;
 241         struct megasas_register_set __iomem *reg_set;
 242
 243         reg_set = instance->reg_set;
 244
 245         /* ventura FW does not fill outbound_scratch_pad_3 with queue depth */
 246         if (!instance->is_ventura)
 247                 cur_max_fw_cmds =
 248                 readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF;
 249
 250         if (dual_qdepth_disable || !cur_max_fw_cmds)
 251                 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
 252         else
 253                 ldio_threshold =
 254                         (instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
 255
 256         dev_info(&instance->pdev->dev,
 257                         "Current firmware maximum commands: %d\t LDIO threshold: %d\n",
 258                         cur_max_fw_cmds, ldio_threshold);
 259
 260         if (fw_boot_context == OCR_CONTEXT) {
 261                 cur_max_fw_cmds = cur_max_fw_cmds - 1;
 262                 if (cur_max_fw_cmds < instance->max_fw_cmds) {
 263                         instance->cur_can_queue =
 264                                 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
 265                                                 MEGASAS_FUSION_IOCTL_CMDS);
 266                         instance->host->can_queue = instance->cur_can_queue;
 267                         instance->ldio_threshold = ldio_threshold;
 268                 }
 269         } else {
 270                 instance->max_fw_cmds = cur_max_fw_cmds;
 271                 instance->ldio_threshold = ldio_threshold;
 272
 273                 if (!instance->is_rdpq)
 274                         instance->max_fw_cmds =
 275                                 min_t(u16, instance->max_fw_cmds, 1024);
 276
 277                 if (reset_devices)
 278                         instance->max_fw_cmds = min(instance->max_fw_cmds,
 279                                                 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
 280                 /*
 281                 * Reduce the max supported cmds by 1. This is to ensure that the
 282                 * reply_q_sz (1 more than the max cmd that driver may send)
 283                 * does not exceed max cmds that the FW can support
 284                 */
 285                 instance->max_fw_cmds = instance->max_fw_cmds-1;
 286
 287                 instance->max_scsi_cmds = instance->max_fw_cmds -
 288                                 (MEGASAS_FUSION_INTERNAL_CMDS +
 289                                 MEGASAS_FUSION_IOCTL_CMDS);
 290                 instance->cur_can_queue = instance->max_scsi_cmds;
 291                 instance->host->can_queue = instance->cur_can_queue;
 292         }
 293
 294         if (instance->is_ventura)
 295                 instance->max_mpt_cmds =
 296                 instance->max_fw_cmds * RAID_1_PEER_CMDS;
 297         else
 298                 instance->max_mpt_cmds = instance->max_fw_cmds;
 299 }
 300 /**
 301  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
 302  * @instance:           Adapter soft state
 303  */
 304 void
 305 megasas_free_cmds_fusion(struct megasas_instance *instance)
 306 {
 307         int i;
 308         struct fusion_context *fusion = instance->ctrl_context;
 309         struct megasas_cmd_fusion *cmd;
 310
 311         /* SG, Sense */
 312         for (i = 0; i < instance->max_mpt_cmds; i++) {
 313                 cmd = fusion->cmd_list[i];
 314                 if (cmd) {
 315                         if (cmd->sg_frame)
 316                                 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
 317                                       cmd->sg_frame_phys_addr);
 318                         if (cmd->sense)
 319                                 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
 320                                       cmd->sense_phys_addr);
 321                 }
 322         }
 323
 324         if (fusion->sg_dma_pool) {
 325                 pci_pool_destroy(fusion->sg_dma_pool);
 326                 fusion->sg_dma_pool = NULL;
 327         }
 328         if (fusion->sense_dma_pool) {
 329                 pci_pool_destroy(fusion->sense_dma_pool);
 330                 fusion->sense_dma_pool = NULL;
 331         }
 332
 333
 334         /* Reply Frame, Desc*/
 335         if (instance->is_rdpq)
 336                 megasas_free_rdpq_fusion(instance);
 337         else
 338                 megasas_free_reply_fusion(instance);
 339
 340         /* Request Frame, Desc*/
 341         if (fusion->req_frames_desc)
 342                 dma_free_coherent(&instance->pdev->dev,
 343                         fusion->request_alloc_sz, fusion->req_frames_desc,
 344                         fusion->req_frames_desc_phys);
 345         if (fusion->io_request_frames)
 346                 pci_pool_free(fusion->io_request_frames_pool,
 347                         fusion->io_request_frames,
 348                         fusion->io_request_frames_phys);
 349         if (fusion->io_request_frames_pool) {
 350                 pci_pool_destroy(fusion->io_request_frames_pool);
 351                 fusion->io_request_frames_pool = NULL;
 352         }
 353
 354
 355         /* cmd_list */
 356         for (i = 0; i < instance->max_mpt_cmds; i++)
 357                 kfree(fusion->cmd_list[i]);
 358
 359         kfree(fusion->cmd_list);
 360 }
 361
 362 /**
 363  * megasas_create_sg_sense_fusion -     Creates DMA pool for cmd frames
 364  * @instance:                   Adapter soft state
 365  *
 366  */
 367 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 368 {
 369         int i;
 370         u16 max_cmd;
 371         struct fusion_context *fusion;
 372         struct megasas_cmd_fusion *cmd;
 373
 374         fusion = instance->ctrl_context;
 375         max_cmd = instance->max_fw_cmds;
 376
 377
 378         fusion->sg_dma_pool =
 379                         pci_pool_create("mr_sg", instance->pdev,
 380                                 instance->max_chain_frame_sz,
 381                                 MR_DEFAULT_NVME_PAGE_SIZE, 0);
 382         /* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
 383         fusion->sense_dma_pool =
 384                         pci_pool_create("mr_sense", instance->pdev,
 385                                 SCSI_SENSE_BUFFERSIZE, 64, 0);
 386
 387         if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
 388                 dev_err(&instance->pdev->dev,
 389                         "Failed from %s %d\n",  __func__, __LINE__);
 390                 return -ENOMEM;
 391         }
 392
 393         /*
 394          * Allocate and attach a frame to each of the commands in cmd_list
 395          */
 396         for (i = 0; i < max_cmd; i++) {
 397                 cmd = fusion->cmd_list[i];
 398                 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
 399                                         GFP_KERNEL, &cmd->sg_frame_phys_addr);
 400
 401                 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
 402                                         GFP_KERNEL, &cmd->sense_phys_addr);
 403                 if (!cmd->sg_frame || !cmd->sense) {
 404                         dev_err(&instance->pdev->dev,
 405                                 "Failed from %s %d\n",  __func__, __LINE__);
 406                         return -ENOMEM;
 407                 }
 408         }
 409
 410         /* create sense buffer for the raid 1/10 fp */
 411         for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
 412                 cmd = fusion->cmd_list[i];
 413                 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
 414                         GFP_KERNEL, &cmd->sense_phys_addr);
 415                 if (!cmd->sense) {
 416                         dev_err(&instance->pdev->dev,
 417                                 "Failed from %s %d\n",  __func__, __LINE__);
 418                         return -ENOMEM;
 419                 }
 420         }
 421
 422         return 0;
 423 }
 424
 425 int
 426 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
 427 {
 428         u32 max_mpt_cmd, i, j;
 429         struct fusion_context *fusion;
 430
 431         fusion = instance->ctrl_context;
 432
 433         max_mpt_cmd = instance->max_mpt_cmds;
 434
 435         /*
 436          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
 437          * Allocate the dynamic array first and then allocate individual
 438          * commands.
 439          */
 440         fusion->cmd_list =
 441                 kzalloc(sizeof(struct megasas_cmd_fusion *) * max_mpt_cmd,
 442                         GFP_KERNEL);
 443         if (!fusion->cmd_list) {
 444                 dev_err(&instance->pdev->dev,
 445                         "Failed from %s %d\n",  __func__, __LINE__);
 446                 return -ENOMEM;
 447         }
 448
 449         for (i = 0; i < max_mpt_cmd; i++) {
 450                 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
 451                                               GFP_KERNEL);
 452                 if (!fusion->cmd_list[i]) {
 453                         for (j = 0; j < i; j++)
 454                                 kfree(fusion->cmd_list[j]);
 455                         kfree(fusion->cmd_list);
 456                         dev_err(&instance->pdev->dev,
 457                                 "Failed from %s %d\n",  __func__, __LINE__);
 458                         return -ENOMEM;
 459                 }
 460         }
 461
 462         return 0;
 463 }
 464 int
 465 megasas_alloc_request_fusion(struct megasas_instance *instance)
 466 {
 467         struct fusion_context *fusion;
 468
 469         fusion = instance->ctrl_context;
 470
 471         fusion->req_frames_desc =
 472                 dma_alloc_coherent(&instance->pdev->dev,
 473                         fusion->request_alloc_sz,
 474                         &fusion->req_frames_desc_phys, GFP_KERNEL);
 475         if (!fusion->req_frames_desc) {
 476                 dev_err(&instance->pdev->dev,
 477                         "Failed from %s %d\n",  __func__, __LINE__);
 478                 return -ENOMEM;
 479         }
 480
 481         fusion->io_request_frames_pool =
 482                         pci_pool_create("mr_ioreq", instance->pdev,
 483                                 fusion->io_frames_alloc_sz, 16, 0);
 484
 485         if (!fusion->io_request_frames_pool) {
 486                 dev_err(&instance->pdev->dev,
 487                         "Failed from %s %d\n",  __func__, __LINE__);
 488                 return -ENOMEM;
 489         }
 490
 491         fusion->io_request_frames =
 492                         pci_pool_alloc(fusion->io_request_frames_pool,
 493                                 GFP_KERNEL, &fusion->io_request_frames_phys);
 494         if (!fusion->io_request_frames) {
 495                 dev_err(&instance->pdev->dev,
 496                         "Failed from %s %d\n",  __func__, __LINE__);
 497                 return -ENOMEM;
 498         }
 499         return 0;
 500 }
 501
 502 int
 503 megasas_alloc_reply_fusion(struct megasas_instance *instance)
 504 {
 505         int i, count;
 506         struct fusion_context *fusion;
 507         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 508         fusion = instance->ctrl_context;
 509
 510         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 511         fusion->reply_frames_desc_pool =
 512                         pci_pool_create("mr_reply", instance->pdev,
 513                                 fusion->reply_alloc_sz * count, 16, 0);
 514
 515         if (!fusion->reply_frames_desc_pool) {
 516                 dev_err(&instance->pdev->dev,
 517                         "Failed from %s %d\n",  __func__, __LINE__);
 518                 return -ENOMEM;
 519         }
 520
 521         fusion->reply_frames_desc[0] =
 522                 pci_pool_alloc(fusion->reply_frames_desc_pool,
 523                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
 524         if (!fusion->reply_frames_desc[0]) {
 525                 dev_err(&instance->pdev->dev,
 526                         "Failed from %s %d\n",  __func__, __LINE__);
 527                 return -ENOMEM;
 528         }
 529         reply_desc = fusion->reply_frames_desc[0];
 530         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 531                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 532
 533         /* This is not a rdpq mode, but driver still populate
 534          * reply_frame_desc array to use same msix index in ISR path.
 535          */
 536         for (i = 0; i < (count - 1); i++)
 537                 fusion->reply_frames_desc[i + 1] =
 538                         fusion->reply_frames_desc[i] +
 539                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
 540
 541         return 0;
 542 }
 543
 544 int
 545 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 546 {
 547         int i, j, count;
 548         struct fusion_context *fusion;
 549         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 550
 551         fusion = instance->ctrl_context;
 552
 553         fusion->rdpq_virt = pci_alloc_consistent(instance->pdev,
 554                                 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 555                                 &fusion->rdpq_phys);
 556         if (!fusion->rdpq_virt) {
 557                 dev_err(&instance->pdev->dev,
 558                         "Failed from %s %d\n",  __func__, __LINE__);
 559                 return -ENOMEM;
 560         }
 561
 562         memset(fusion->rdpq_virt, 0,
 563                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION);
 564         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 565         fusion->reply_frames_desc_pool = pci_pool_create("mr_rdpq",
 566                                                          instance->pdev, fusion->reply_alloc_sz, 16, 0);
 567
 568         if (!fusion->reply_frames_desc_pool) {
 569                 dev_err(&instance->pdev->dev,
 570                         "Failed from %s %d\n",  __func__, __LINE__);
 571                 return -ENOMEM;
 572         }
 573
 574         for (i = 0; i < count; i++) {
 575                 fusion->reply_frames_desc[i] =
 576                                 pci_pool_alloc(fusion->reply_frames_desc_pool,
 577                                         GFP_KERNEL, &fusion->reply_frames_desc_phys[i]);
 578                 if (!fusion->reply_frames_desc[i]) {
 579                         dev_err(&instance->pdev->dev,
 580                                 "Failed from %s %d\n",  __func__, __LINE__);
 581                         return -ENOMEM;
 582                 }
 583
 584                 fusion->rdpq_virt[i].RDPQBaseAddress =
 585                         cpu_to_le64(fusion->reply_frames_desc_phys[i]);
 586
 587                 reply_desc = fusion->reply_frames_desc[i];
 588                 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
 589                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 590         }
 591         return 0;
 592 }
 593
 594 static void
 595 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 596
 597         int i;
 598         struct fusion_context *fusion;
 599
 600         fusion = instance->ctrl_context;
 601
 602         for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) {
 603                 if (fusion->reply_frames_desc[i])
 604                         pci_pool_free(fusion->reply_frames_desc_pool,
 605                                 fusion->reply_frames_desc[i],
 606                                 fusion->reply_frames_desc_phys[i]);
 607         }
 608
 609         if (fusion->reply_frames_desc_pool)
 610                 pci_pool_destroy(fusion->reply_frames_desc_pool);
 611
 612         if (fusion->rdpq_virt)
 613                 pci_free_consistent(instance->pdev,
 614                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 615                         fusion->rdpq_virt, fusion->rdpq_phys);
 616 }
 617
 618 static void
 619 megasas_free_reply_fusion(struct megasas_instance *instance) {
 620
 621         struct fusion_context *fusion;
 622
 623         fusion = instance->ctrl_context;
 624
 625         if (fusion->reply_frames_desc[0])
 626                 pci_pool_free(fusion->reply_frames_desc_pool,
 627                         fusion->reply_frames_desc[0],
 628                         fusion->reply_frames_desc_phys[0]);
 629
 630         if (fusion->reply_frames_desc_pool)
 631                 pci_pool_destroy(fusion->reply_frames_desc_pool);
 632
 633 }
 634
 635
 636 /**
 637  * megasas_alloc_cmds_fusion -  Allocates the command packets
 638  * @instance:           Adapter soft state
 639  *
 640  *
 641  * Each frame has a 32-bit field called context. This context is used to get
 642  * back the megasas_cmd_fusion from the frame when a frame gets completed
 643  * In this driver, the 32 bit values are the indices into an array cmd_list.
 644  * This array is used only to look up the megasas_cmd_fusion given the context.
 645  * The free commands themselves are maintained in a linked list called cmd_pool.
 646  *
 647  * cmds are formed in the io_request and sg_frame members of the
 648  * megasas_cmd_fusion. The context field is used to get a request descriptor
 649  * and is used as SMID of the cmd.
 650  * SMID value range is from 1 to max_fw_cmds.
 651  */
 652 int
 653 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 654 {
 655         int i;
 656         struct fusion_context *fusion;
 657         struct megasas_cmd_fusion *cmd;
 658         u32 offset;
 659         dma_addr_t io_req_base_phys;
 660         u8 *io_req_base;
 661
 662
 663         fusion = instance->ctrl_context;
 664
 665         if (megasas_alloc_cmdlist_fusion(instance))
 666                 goto fail_exit;
 667
 668         if (megasas_alloc_request_fusion(instance))
 669                 goto fail_exit;
 670
 671         if (instance->is_rdpq) {
 672                 if (megasas_alloc_rdpq_fusion(instance))
 673                         goto fail_exit;
 674         } else
 675                 if (megasas_alloc_reply_fusion(instance))
 676                         goto fail_exit;
 677
 678
 679         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 680         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 681         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 682
 683         /*
 684          * Add all the commands to command pool (fusion->cmd_pool)
 685          */
 686
 687         /* SMID 0 is reserved. Set SMID/index from 1 */
 688         for (i = 0; i < instance->max_mpt_cmds; i++) {
 689                 cmd = fusion->cmd_list[i];
 690                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
 691                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
 692                 cmd->index = i + 1;
 693                 cmd->scmd = NULL;
 694                 cmd->sync_cmd_idx =
 695                 (i >= instance->max_scsi_cmds && i < instance->max_fw_cmds) ?
 696                                 (i - instance->max_scsi_cmds) :
 697                                 (u32)ULONG_MAX; /* Set to Invalid */
 698                 cmd->instance = instance;
 699                 cmd->io_request =
 700                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
 701                   (io_req_base + offset);
 702                 memset(cmd->io_request, 0,
 703                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 704                 cmd->io_request_phys_addr = io_req_base_phys + offset;
 705                 cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
 706         }
 707
 708         if (megasas_create_sg_sense_fusion(instance))
 709                 goto fail_exit;
 710
 711         return 0;
 712
 713 fail_exit:
 714         megasas_free_cmds_fusion(instance);
 715         return -ENOMEM;
 716 }
 717
 718 /**
 719  * wait_and_poll -      Issues a polling command
 720  * @instance:                   Adapter soft state
 721  * @cmd:                        Command packet to be issued
 722  *
 723  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 724  */
 725 int
 726 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 727         int seconds)
 728 {
 729         int i;
 730         struct megasas_header *frame_hdr = &cmd->frame->hdr;
 731         struct fusion_context *fusion;
 732
 733         u32 msecs = seconds * 1000;
 734
 735         fusion = instance->ctrl_context;
 736         /*
 737          * Wait for cmd_status to change
 738          */
 739         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
 740                 rmb();
 741                 msleep(20);
 742         }
 743
 744         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
 745                 return DCMD_TIMEOUT;
 746         else if (frame_hdr->cmd_status == MFI_STAT_OK)
 747                 return DCMD_SUCCESS;
 748         else
 749                 return DCMD_FAILED;
 750 }
 751
 752 /**
 753  * megasas_ioc_init_fusion -    Initializes the FW
 754  * @instance:           Adapter soft state
 755  *
 756  * Issues the IOC Init cmd
 757  */
 758 int
 759 megasas_ioc_init_fusion(struct megasas_instance *instance)
 760 {
 761         struct megasas_init_frame *init_frame;
 762         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
 763         dma_addr_t      ioc_init_handle;
 764         struct megasas_cmd *cmd;
 765         u8 ret, cur_rdpq_mode;
 766         struct fusion_context *fusion;
 767         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
 768         int i;
 769         struct megasas_header *frame_hdr;
 770         const char *sys_info;
 771         MFI_CAPABILITIES *drv_ops;
 772         u32 scratch_pad_2;
 773         unsigned long flags;
 774
 775         fusion = instance->ctrl_context;
 776
 777         cmd = megasas_get_cmd(instance);
 778
 779         if (!cmd) {
 780                 dev_err(&instance->pdev->dev, "Could not allocate cmd for INIT Frame\n");
 781                 ret = 1;
 782                 goto fail_get_cmd;
 783         }
 784
 785         scratch_pad_2 = readl
 786                 (&instance->reg_set->outbound_scratch_pad_2);
 787
 788         cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
 789
 790         if (instance->is_rdpq && !cur_rdpq_mode) {
 791                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
 792                         " from RDPQ mode to non RDPQ mode\n");
 793                 ret = 1;
 794                 goto fail_fw_init;
 795         }
 796
 797         instance->fw_sync_cache_support = (scratch_pad_2 &
 798                 MR_CAN_HANDLE_SYNC_CACHE_OFFSET) ? 1 : 0;
 799         dev_info(&instance->pdev->dev, "FW supports sync cache\t: %s\n",
 800                  instance->fw_sync_cache_support ? "Yes" : "No");
 801
 802         IOCInitMessage =
 803           dma_alloc_coherent(&instance->pdev->dev,
 804                              sizeof(struct MPI2_IOC_INIT_REQUEST),
 805                              &ioc_init_handle, GFP_KERNEL);
 806
 807         if (!IOCInitMessage) {
 808                 dev_err(&instance->pdev->dev, "Could not allocate memory for "
 809                        "IOCInitMessage\n");
 810                 ret = 1;
 811                 goto fail_fw_init;
 812         }
 813
 814         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
 815
 816         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
 817         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
 818         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
 819         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
 820         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
 821
 822         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
 823         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
 824                         cpu_to_le64(fusion->rdpq_phys) :
 825                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
 826         IOCInitMessage->MsgFlags = instance->is_rdpq ?
 827                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
 828         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
 829         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
 830         IOCInitMessage->HostPageSize = MR_DEFAULT_NVME_PAGE_SHIFT;
 831         init_frame = (struct megasas_init_frame *)cmd->frame;
 832         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
 833
 834         frame_hdr = &cmd->frame->hdr;
 835         frame_hdr->cmd_status = 0xFF;
 836         frame_hdr->flags = cpu_to_le16(
 837                 le16_to_cpu(frame_hdr->flags) |
 838                 MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
 839
 840         init_frame->cmd = MFI_CMD_INIT;
 841         init_frame->cmd_status = 0xFF;
 842
 843         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
 844
 845         /* driver support Extended MSIX */
 846         if (fusion->adapter_type >= INVADER_SERIES)
 847                 drv_ops->mfi_capabilities.support_additional_msix = 1;
 848         /* driver supports HA / Remote LUN over Fast Path interface */
 849         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
 850
 851         drv_ops->mfi_capabilities.support_max_255lds = 1;
 852         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
 853         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
 854
 855         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
 856                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
 857
 858         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
 859         if (!dual_qdepth_disable)
 860                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
 861
 862         drv_ops->mfi_capabilities.support_qd_throttling = 1;
 863         drv_ops->mfi_capabilities.support_pd_map_target_id = 1;
 864         /* Convert capability to LE32 */
 865         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
 866
 867         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
 868         if (instance->system_info_buf && sys_info) {
 869                 memcpy(instance->system_info_buf->systemId, sys_info,
 870                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
 871                 instance->system_info_buf->systemIdLength =
 872                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
 873                 init_frame->system_info_lo = instance->system_info_h;
 874                 init_frame->system_info_hi = 0;
 875         }
 876
 877         init_frame->queue_info_new_phys_addr_hi =
 878                 cpu_to_le32(upper_32_bits(ioc_init_handle));
 879         init_frame->queue_info_new_phys_addr_lo =
 880                 cpu_to_le32(lower_32_bits(ioc_init_handle));
 881         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
 882
 883         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
 884         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
 885         req_desc.MFAIo.RequestFlags =
 886                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
 887                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
 888
 889         /*
 890          * disable the intr before firing the init frame
 891          */
 892         instance->instancet->disable_intr(instance);
 893
 894         for (i = 0; i < (10 * 1000); i += 20) {
 895                 if (readl(&instance->reg_set->doorbell) & 1)
 896                         msleep(20);
 897                 else
 898                         break;
 899         }
 900
 901         /* For Ventura also IOC INIT required 64 bit Descriptor write. */
 902         spin_lock_irqsave(&instance->hba_lock, flags);
 903         writel(le32_to_cpu(req_desc.u.low),
 904                &instance->reg_set->inbound_low_queue_port);
 905         writel(le32_to_cpu(req_desc.u.high),
 906                &instance->reg_set->inbound_high_queue_port);
 907         mmiowb();
 908         spin_unlock_irqrestore(&instance->hba_lock, flags);
 909
 910         wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
 911
 912         frame_hdr = &cmd->frame->hdr;
 913         if (frame_hdr->cmd_status != 0) {
 914                 ret = 1;
 915                 goto fail_fw_init;
 916         }
 917         dev_info(&instance->pdev->dev, "Init cmd success\n");
 918
 919         ret = 0;
 920
 921 fail_fw_init:
 922         megasas_return_cmd(instance, cmd);
 923         if (IOCInitMessage)
 924                 dma_free_coherent(&instance->pdev->dev,
 925                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
 926                                   IOCInitMessage, ioc_init_handle);
 927 fail_get_cmd:
 928         return ret;
 929 }
 930
 931 /**
 932  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
 933  * @instance:           Adapter soft state
 934  * @pend:               set to 1, if it is pended jbod map.
 935  *
 936  * Issue Jbod map to the firmware. If it is pended command,
 937  * issue command and return. If it is first instance of jbod map
 938  * issue and receive command.
 939  */
 940 int
 941 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
 942         int ret = 0;
 943         u32 pd_seq_map_sz;
 944         struct megasas_cmd *cmd;
 945         struct megasas_dcmd_frame *dcmd;
 946         struct fusion_context *fusion = instance->ctrl_context;
 947         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
 948         dma_addr_t pd_seq_h;
 949
 950         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
 951         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
 952         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
 953                         (sizeof(struct MR_PD_CFG_SEQ) *
 954                         (MAX_PHYSICAL_DEVICES - 1));
 955
 956         cmd = megasas_get_cmd(instance);
 957         if (!cmd) {
 958                 dev_err(&instance->pdev->dev,
 959                         "Could not get mfi cmd. Fail from %s %d\n",
 960                         __func__, __LINE__);
 961                 return -ENOMEM;
 962         }
 963
 964         dcmd = &cmd->frame->dcmd;
 965
 966         memset(pd_sync, 0, pd_seq_map_sz);
 967         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
 968         dcmd->cmd = MFI_CMD_DCMD;
 969         dcmd->cmd_status = 0xFF;
 970         dcmd->sge_count = 1;
 971         dcmd->timeout = 0;
 972         dcmd->pad_0 = 0;
 973         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
 974         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
 975         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(pd_seq_h);
 976         dcmd->sgl.sge32[0].length = cpu_to_le32(pd_seq_map_sz);
 977
 978         if (pend) {
 979                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
 980                 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
 981                 instance->jbod_seq_cmd = cmd;
 982                 instance->instancet->issue_dcmd(instance, cmd);
 983                 return 0;
 984         }
 985
 986         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
 987
 988         /* Below code is only for non pended DCMD */
 989         if (instance->ctrl_context && !instance->mask_interrupts)
 990                 ret = megasas_issue_blocked_cmd(instance, cmd,
 991                         MFI_IO_TIMEOUT_SECS);
 992         else
 993                 ret = megasas_issue_polled(instance, cmd);
 994
 995         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
 996                 dev_warn(&instance->pdev->dev,
 997                         "driver supports max %d JBOD, but FW reports %d\n",
 998                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
 999                 ret = -EINVAL;
1000         }
1001
1002         if (ret == DCMD_TIMEOUT && instance->ctrl_context)
1003                 megaraid_sas_kill_hba(instance);
1004
1005         if (ret == DCMD_SUCCESS)
1006                 instance->pd_seq_map_id++;
1007
1008         megasas_return_cmd(instance, cmd);
1009         return ret;
1010 }
1011
1012 /*
1013  * megasas_get_ld_map_info -    Returns FW's ld_map structure
1014  * @instance:                           Adapter soft state
1015  * @pend:                               Pend the command or not
1016  * Issues an internal command (DCMD) to get the FW's controller PD
1017  * list structure.  This information is mainly used to find out SYSTEM
1018  * supported by the FW.
1019  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
1020  * dcmd.mbox.b[0]       - number of LDs being sync'd
1021  * dcmd.mbox.b[1]       - 0 - complete command immediately.
1022  *                      - 1 - pend till config change
1023  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
1024  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
1025  *                              uses extended struct MR_FW_RAID_MAP_EXT
1026  */
1027 static int
1028 megasas_get_ld_map_info(struct megasas_instance *instance)
1029 {
1030         int ret = 0;
1031         struct megasas_cmd *cmd;
1032         struct megasas_dcmd_frame *dcmd;
1033         void *ci;
1034         dma_addr_t ci_h = 0;
1035         u32 size_map_info;
1036         struct fusion_context *fusion;
1037
1038         cmd = megasas_get_cmd(instance);
1039
1040         if (!cmd) {
1041                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
1042                 return -ENOMEM;
1043         }
1044
1045         fusion = instance->ctrl_context;
1046
1047         if (!fusion) {
1048                 megasas_return_cmd(instance, cmd);
1049                 return -ENXIO;
1050         }
1051
1052         dcmd = &cmd->frame->dcmd;
1053
1054         size_map_info = fusion->current_map_sz;
1055
1056         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
1057         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
1058
1059         if (!ci) {
1060                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1061                 megasas_return_cmd(instance, cmd);
1062                 return -ENOMEM;
1063         }
1064
1065         memset(ci, 0, fusion->max_map_sz);
1066         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1067         dcmd->cmd = MFI_CMD_DCMD;
1068         dcmd->cmd_status = 0xFF;
1069         dcmd->sge_count = 1;
1070         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
1071         dcmd->timeout = 0;
1072         dcmd->pad_0 = 0;
1073         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1074         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1075         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
1076         dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
1077
1078         if (instance->ctrl_context && !instance->mask_interrupts)
1079                 ret = megasas_issue_blocked_cmd(instance, cmd,
1080                         MFI_IO_TIMEOUT_SECS);
1081         else
1082                 ret = megasas_issue_polled(instance, cmd);
1083
1084         if (ret == DCMD_TIMEOUT && instance->ctrl_context)
1085                 megaraid_sas_kill_hba(instance);
1086
1087         megasas_return_cmd(instance, cmd);
1088
1089         return ret;
1090 }
1091
1092 u8
1093 megasas_get_map_info(struct megasas_instance *instance)
1094 {
1095         struct fusion_context *fusion = instance->ctrl_context;
1096
1097         fusion->fast_path_io = 0;
1098         if (!megasas_get_ld_map_info(instance)) {
1099                 if (MR_ValidateMapInfo(instance)) {
1100                         fusion->fast_path_io = 1;
1101                         return 0;
1102                 }
1103         }
1104         return 1;
1105 }
1106
1107 /*
1108  * megasas_sync_map_info -      Returns FW's ld_map structure
1109  * @instance:                           Adapter soft state
1110  *
1111  * Issues an internal command (DCMD) to get the FW's controller PD
1112  * list structure.  This information is mainly used to find out SYSTEM
1113  * supported by the FW.
1114  */
1115 int
1116 megasas_sync_map_info(struct megasas_instance *instance)
1117 {
1118         int i;
1119         struct megasas_cmd *cmd;
1120         struct megasas_dcmd_frame *dcmd;
1121         u16 num_lds;
1122         u32 size_sync_info;
1123         struct fusion_context *fusion;
1124         struct MR_LD_TARGET_SYNC *ci = NULL;
1125         struct MR_DRV_RAID_MAP_ALL *map;
1126         struct MR_LD_RAID  *raid;
1127         struct MR_LD_TARGET_SYNC *ld_sync;
1128         dma_addr_t ci_h = 0;
1129         u32 size_map_info;
1130
1131         cmd = megasas_get_cmd(instance);
1132
1133         if (!cmd) {
1134                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1135                 return -ENOMEM;
1136         }
1137
1138         fusion = instance->ctrl_context;
1139
1140         if (!fusion) {
1141                 megasas_return_cmd(instance, cmd);
1142                 return 1;
1143         }
1144
1145         map = fusion->ld_drv_map[instance->map_id & 1];
1146
1147         num_lds = le16_to_cpu(map->raidMap.ldCount);
1148
1149         dcmd = &cmd->frame->dcmd;
1150
1151         size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
1152
1153         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1154
1155         ci = (struct MR_LD_TARGET_SYNC *)
1156           fusion->ld_map[(instance->map_id - 1) & 1];
1157         memset(ci, 0, fusion->max_map_sz);
1158
1159         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1160
1161         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1162
1163         for (i = 0; i < num_lds; i++, ld_sync++) {
1164                 raid = MR_LdRaidGet(i, map);
1165                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1166                 ld_sync->seqNum = raid->seqNum;
1167         }
1168
1169         size_map_info = fusion->current_map_sz;
1170
1171         dcmd->cmd = MFI_CMD_DCMD;
1172         dcmd->cmd_status = 0xFF;
1173         dcmd->sge_count = 1;
1174         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
1175         dcmd->timeout = 0;
1176         dcmd->pad_0 = 0;
1177         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1178         dcmd->mbox.b[0] = num_lds;
1179         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1180         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1181         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
1182         dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
1183
1184         instance->map_update_cmd = cmd;
1185
1186         instance->instancet->issue_dcmd(instance, cmd);
1187
1188         return 0;
1189 }
1190
1191 /*
1192  * meagasas_display_intel_branding - Display branding string
1193  * @instance: per adapter object
1194  *
1195  * Return nothing.
1196  */
1197 static void
1198 megasas_display_intel_branding(struct megasas_instance *instance)
1199 {
1200         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1201                 return;
1202
1203         switch (instance->pdev->device) {
1204         case PCI_DEVICE_ID_LSI_INVADER:
1205                 switch (instance->pdev->subsystem_device) {
1206                 case MEGARAID_INTEL_RS3DC080_SSDID:
1207                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1208                                 instance->host->host_no,
1209                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1210                         break;
1211                 case MEGARAID_INTEL_RS3DC040_SSDID:
1212                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1213                                 instance->host->host_no,
1214                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1215                         break;
1216                 case MEGARAID_INTEL_RS3SC008_SSDID:
1217                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1218                                 instance->host->host_no,
1219                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1220                         break;
1221                 case MEGARAID_INTEL_RS3MC044_SSDID:
1222                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1223                                 instance->host->host_no,
1224                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1225                         break;
1226                 default:
1227                         break;
1228                 }
1229                 break;
1230         case PCI_DEVICE_ID_LSI_FURY:
1231                 switch (instance->pdev->subsystem_device) {
1232                 case MEGARAID_INTEL_RS3WC080_SSDID:
1233                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1234                                 instance->host->host_no,
1235                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1236                         break;
1237                 case MEGARAID_INTEL_RS3WC040_SSDID:
1238                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1239                                 instance->host->host_no,
1240                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1241                         break;
1242                 default:
1243                         break;
1244                 }
1245                 break;
1246         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1247         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1248                 switch (instance->pdev->subsystem_device) {
1249                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1250                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1251                                 instance->host->host_no,
1252                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1253                         break;
1254                 default:
1255                         break;
1256                 }
1257                 break;
1258         default:
1259                 break;
1260         }
1261 }
1262
1263 /**
1264  * megasas_init_adapter_fusion -        Initializes the FW
1265  * @instance:           Adapter soft state
1266  *
1267  * This is the main function for initializing firmware.
1268  */
1269 u32
1270 megasas_init_adapter_fusion(struct megasas_instance *instance)
1271 {
1272         struct megasas_register_set __iomem *reg_set;
1273         struct fusion_context *fusion;
1274         u16 max_cmd;
1275         u32 scratch_pad_2;
1276         int i = 0, count;
1277
1278         fusion = instance->ctrl_context;
1279
1280         reg_set = instance->reg_set;
1281
1282         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1283
1284         /*
1285          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1286          */
1287         instance->max_mfi_cmds =
1288                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1289
1290         max_cmd = instance->max_fw_cmds;
1291
1292         fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
1293
1294         fusion->request_alloc_sz =
1295         sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * instance->max_mpt_cmds;
1296         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
1297                 *(fusion->reply_q_depth);
1298         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1299                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1300                 * (instance->max_mpt_cmds + 1)); /* Extra 1 for SMID 0 */
1301
1302         scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2);
1303         /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1304          * Firmware support extended IO chain frame which is 4 times more than
1305          * legacy Firmware.
1306          * Legacy Firmware - Frame size is (8 * 128) = 1K
1307          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1308          */
1309         if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1310                 instance->max_chain_frame_sz =
1311                         ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1312                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1313         else
1314                 instance->max_chain_frame_sz =
1315                         ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1316                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1317
1318         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1319                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1320                         instance->max_chain_frame_sz,
1321                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1322                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1323         }
1324
1325         fusion->max_sge_in_main_msg =
1326                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1327                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1328
1329         fusion->max_sge_in_chain =
1330                 instance->max_chain_frame_sz
1331                         / sizeof(union MPI2_SGE_IO_UNION);
1332
1333         instance->max_num_sge =
1334                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1335                         + fusion->max_sge_in_chain - 2);
1336
1337         /* Used for pass thru MFI frame (DCMD) */
1338         fusion->chain_offset_mfi_pthru =
1339                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1340
1341         fusion->chain_offset_io_request =
1342                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1343                  sizeof(union MPI2_SGE_IO_UNION))/16;
1344
1345         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1346         for (i = 0 ; i < count; i++)
1347                 fusion->last_reply_idx[i] = 0;
1348
1349         /*
1350          * For fusion adapters, 3 commands for IOCTL and 8 commands
1351          * for driver's internal DCMDs.
1352          */
1353         instance->max_scsi_cmds = instance->max_fw_cmds -
1354                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1355                                 MEGASAS_FUSION_IOCTL_CMDS);
1356         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1357
1358         /*
1359          * Allocate memory for descriptors
1360          * Create a pool of commands
1361          */
1362         if (megasas_alloc_cmds(instance))
1363                 goto fail_alloc_mfi_cmds;
1364         if (megasas_alloc_cmds_fusion(instance))
1365                 goto fail_alloc_cmds;
1366
1367         if (megasas_ioc_init_fusion(instance))
1368                 goto fail_ioc_init;
1369
1370         megasas_display_intel_branding(instance);
1371         if (megasas_get_ctrl_info(instance)) {
1372                 dev_err(&instance->pdev->dev,
1373                         "Could not get controller info. Fail from %s %d\n",
1374                         __func__, __LINE__);
1375                 goto fail_ioc_init;
1376         }
1377
1378         instance->flag_ieee = 1;
1379         instance->r1_ldio_hint_default =  MR_R1_LDIO_PIGGYBACK_DEFAULT;
1380         fusion->fast_path_io = 0;
1381
1382         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1383         for (i = 0; i < 2; i++) {
1384                 fusion->ld_map[i] = NULL;
1385                 fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL,
1386                         fusion->drv_map_pages);
1387                 if (!fusion->ld_drv_map[i]) {
1388                         dev_err(&instance->pdev->dev, "Could not allocate "
1389                                 "memory for local map info for %d pages\n",
1390                                 fusion->drv_map_pages);
1391                         if (i == 1)
1392                                 free_pages((ulong)fusion->ld_drv_map[0],
1393                                         fusion->drv_map_pages);
1394                         goto fail_ioc_init;
1395                 }
1396                 memset(fusion->ld_drv_map[i], 0,
1397                         ((1 << PAGE_SHIFT) << fusion->drv_map_pages));
1398         }
1399
1400         for (i = 0; i < 2; i++) {
1401                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1402                                                        fusion->max_map_sz,
1403                                                        &fusion->ld_map_phys[i],
1404                                                        GFP_KERNEL);
1405                 if (!fusion->ld_map[i]) {
1406                         dev_err(&instance->pdev->dev, "Could not allocate memory "
1407                                "for map info\n");
1408                         goto fail_map_info;
1409                 }
1410         }
1411
1412         if (!megasas_get_map_info(instance))
1413                 megasas_sync_map_info(instance);
1414
1415         return 0;
1416
1417 fail_map_info:
1418         if (i == 1)
1419                 dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz,
1420                                   fusion->ld_map[0], fusion->ld_map_phys[0]);
1421 fail_ioc_init:
1422         megasas_free_cmds_fusion(instance);
1423 fail_alloc_cmds:
1424         megasas_free_cmds(instance);
1425 fail_alloc_mfi_cmds:
1426         return 1;
1427 }
1428
1429 /**
1430  * map_cmd_status -     Maps FW cmd status to OS cmd status
1431  * @cmd :               Pointer to cmd
1432  * @status :            status of cmd returned by FW
1433  * @ext_status :        ext status of cmd returned by FW
1434  */
1435
1436 void
1437 map_cmd_status(struct fusion_context *fusion,
1438                 struct scsi_cmnd *scmd, u8 status, u8 ext_status,
1439                 u32 data_length, u8 *sense)
1440 {
1441         u8 cmd_type;
1442         int resid;
1443
1444         cmd_type = megasas_cmd_type(scmd);
1445         switch (status) {
1446
1447         case MFI_STAT_OK:
1448                 scmd->result = DID_OK << 16;
1449                 break;
1450
1451         case MFI_STAT_SCSI_IO_FAILED:
1452         case MFI_STAT_LD_INIT_IN_PROGRESS:
1453                 scmd->result = (DID_ERROR << 16) | ext_status;
1454                 break;
1455
1456         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1457
1458                 scmd->result = (DID_OK << 16) | ext_status;
1459                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1460                         memset(scmd->sense_buffer, 0,
1461                                SCSI_SENSE_BUFFERSIZE);
1462                         memcpy(scmd->sense_buffer, sense,
1463                                SCSI_SENSE_BUFFERSIZE);
1464                         scmd->result |= DRIVER_SENSE << 24;
1465                 }
1466
1467                 /*
1468                  * If the  IO request is partially completed, then MR FW will
1469                  * update "io_request->DataLength" field with actual number of
1470                  * bytes transferred.Driver will set residual bytes count in
1471                  * SCSI command structure.
1472                  */
1473                 resid = (scsi_bufflen(scmd) - data_length);
1474                 scsi_set_resid(scmd, resid);
1475
1476                 if (resid &&
1477                         ((cmd_type == READ_WRITE_LDIO) ||
1478                         (cmd_type == READ_WRITE_SYSPDIO)))
1479                         scmd_printk(KERN_INFO, scmd, "BRCM Debug mfi stat 0x%x, data len"
1480                                 " requested/completed 0x%x/0x%x\n",
1481                                 status, scsi_bufflen(scmd), data_length);
1482                 break;
1483
1484         case MFI_STAT_LD_OFFLINE:
1485         case MFI_STAT_DEVICE_NOT_FOUND:
1486                 scmd->result = DID_BAD_TARGET << 16;
1487                 break;
1488         case MFI_STAT_CONFIG_SEQ_MISMATCH:
1489                 scmd->result = DID_IMM_RETRY << 16;
1490                 break;
1491         default:
1492                 scmd->result = DID_ERROR << 16;
1493                 break;
1494         }
1495 }
1496
1497 /**
1498  * megasas_is_prp_possible -
1499  * Checks if native NVMe PRPs can be built for the IO
1500  *
1501  * @instance:           Adapter soft state
1502  * @scmd:               SCSI command from the mid-layer
1503  * @sge_count:          scatter gather element count.
1504  *
1505  * Returns:             true: PRPs can be built
1506  *                      false: IEEE SGLs needs to be built
1507  */
1508 static bool
1509 megasas_is_prp_possible(struct megasas_instance *instance,
1510                         struct scsi_cmnd *scmd, int sge_count)
1511 {
1512         struct fusion_context *fusion;
1513         int i;
1514         u32 data_length = 0;
1515         struct scatterlist *sg_scmd;
1516         bool build_prp = false;
1517         u32 mr_nvme_pg_size;
1518
1519         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1520                                 MR_DEFAULT_NVME_PAGE_SIZE);
1521         fusion = instance->ctrl_context;
1522         data_length = scsi_bufflen(scmd);
1523         sg_scmd = scsi_sglist(scmd);
1524
1525         /*
1526          * NVMe uses one PRP for each page (or part of a page)
1527          * look at the data length - if 4 pages or less then IEEE is OK
1528          * if  > 5 pages then we need to build a native SGL
1529          * if > 4 and <= 5 pages, then check physical address of 1st SG entry
1530          * if this first size in the page is >= the residual beyond 4 pages
1531          * then use IEEE, otherwise use native SGL
1532          */
1533
1534         if (data_length > (mr_nvme_pg_size * 5)) {
1535                 build_prp = true;
1536         } else if ((data_length > (mr_nvme_pg_size * 4)) &&
1537                         (data_length <= (mr_nvme_pg_size * 5)))  {
1538                 /* check if 1st SG entry size is < residual beyond 4 pages */
1539                 if (sg_dma_len(sg_scmd) < (data_length - (mr_nvme_pg_size * 4)))
1540                         build_prp = true;
1541         }
1542
1543 /*
1544  * Below code detects gaps/holes in IO data buffers.
1545  * What does holes/gaps mean?
1546  * Any SGE except first one in a SGL starts at non NVME page size
1547  * aligned address OR Any SGE except last one in a SGL ends at
1548  * non NVME page size boundary.
1549  *
1550  * Driver has already informed block layer by setting boundary rules for
1551  * bio merging done at NVME page size boundary calling kernel API
1552  * blk_queue_virt_boundary inside slave_config.
1553  * Still there is possibility of IO coming with holes to driver because of
1554  * IO merging done by IO scheduler.
1555  *
1556  * With SCSI BLK MQ enabled, there will be no IO with holes as there is no
1557  * IO scheduling so no IO merging.
1558  *
1559  * With SCSI BLK MQ disabled, IO scheduler may attempt to merge IOs and
1560  * then sending IOs with holes.
1561  *
1562  * Though driver can request block layer to disable IO merging by calling-
1563  * queue_flag_set_unlocked(QUEUE_FLAG_NOMERGES, sdev->request_queue) but
1564  * user may tune sysfs parameter- nomerges again to 0 or 1.
1565  *
1566  * If in future IO scheduling is enabled with SCSI BLK MQ,
1567  * this algorithm to detect holes will be required in driver
1568  * for SCSI BLK MQ enabled case as well.
1569  *
1570  *
1571  */
1572         scsi_for_each_sg(scmd, sg_scmd, sge_count, i) {
1573                 if ((i != 0) && (i != (sge_count - 1))) {
1574                         if (mega_mod64(sg_dma_len(sg_scmd), mr_nvme_pg_size) ||
1575                             mega_mod64(sg_dma_address(sg_scmd),
1576                                        mr_nvme_pg_size)) {
1577                                 build_prp = false;
1578                                 atomic_inc(&instance->sge_holes_type1);
1579                                 break;
1580                         }
1581                 }
1582
1583                 if ((sge_count > 1) && (i == 0)) {
1584                         if ((mega_mod64((sg_dma_address(sg_scmd) +
1585                                         sg_dma_len(sg_scmd)),
1586                                         mr_nvme_pg_size))) {
1587                                 build_prp = false;
1588                                 atomic_inc(&instance->sge_holes_type2);
1589                                 break;
1590                         }
1591                 }
1592
1593                 if ((sge_count > 1) && (i == (sge_count - 1))) {
1594                         if (mega_mod64(sg_dma_address(sg_scmd),
1595                                        mr_nvme_pg_size)) {
1596                                 build_prp = false;
1597                                 atomic_inc(&instance->sge_holes_type3);
1598                                 break;
1599                         }
1600                 }
1601         }
1602
1603         return build_prp;
1604 }
1605
1606 /**
1607  * megasas_make_prp_nvme -
1608  * Prepare PRPs(Physical Region Page)- SGLs specific to NVMe drives only
1609  *
1610  * @instance:           Adapter soft state
1611  * @scmd:               SCSI command from the mid-layer
1612  * @sgl_ptr:            SGL to be filled in
1613  * @cmd:                Fusion command frame
1614  * @sge_count:          scatter gather element count.
1615  *
1616  * Returns:             true: PRPs are built
1617  *                      false: IEEE SGLs needs to be built
1618  */
1619 static bool
1620 megasas_make_prp_nvme(struct megasas_instance *instance, struct scsi_cmnd *scmd,
1621                       struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1622                       struct megasas_cmd_fusion *cmd, int sge_count)
1623 {
1624         int sge_len, offset, num_prp_in_chain = 0;
1625         struct MPI25_IEEE_SGE_CHAIN64 *main_chain_element, *ptr_first_sgl;
1626         u64 *ptr_sgl;
1627         dma_addr_t ptr_sgl_phys;
1628         u64 sge_addr;
1629         u32 page_mask, page_mask_result;
1630         struct scatterlist *sg_scmd;
1631         u32 first_prp_len;
1632         bool build_prp = false;
1633         int data_len = scsi_bufflen(scmd);
1634         struct fusion_context *fusion;
1635         u32 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1636                                         MR_DEFAULT_NVME_PAGE_SIZE);
1637
1638         fusion = instance->ctrl_context;
1639
1640         build_prp = megasas_is_prp_possible(instance, scmd, sge_count);
1641
1642         if (!build_prp)
1643                 return false;
1644
1645         /*
1646          * Nvme has a very convoluted prp format.  One prp is required
1647          * for each page or partial page. Driver need to split up OS sg_list
1648          * entries if it is longer than one page or cross a page
1649          * boundary.  Driver also have to insert a PRP list pointer entry as
1650          * the last entry in each physical page of the PRP list.
1651          *
1652          * NOTE: The first PRP "entry" is actually placed in the first
1653          * SGL entry in the main message as IEEE 64 format.  The 2nd
1654          * entry in the main message is the chain element, and the rest
1655          * of the PRP entries are built in the contiguous pcie buffer.
1656          */
1657         page_mask = mr_nvme_pg_size - 1;
1658         ptr_sgl = (u64 *)cmd->sg_frame;
1659         ptr_sgl_phys = cmd->sg_frame_phys_addr;
1660         memset(ptr_sgl, 0, instance->max_chain_frame_sz);
1661
1662         /* Build chain frame element which holds all prps except first*/
1663         main_chain_element = (struct MPI25_IEEE_SGE_CHAIN64 *)
1664             ((u8 *)sgl_ptr + sizeof(struct MPI25_IEEE_SGE_CHAIN64));
1665
1666         main_chain_element->Address = cpu_to_le64(ptr_sgl_phys);
1667         main_chain_element->NextChainOffset = 0;
1668         main_chain_element->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1669                                         IEEE_SGE_FLAGS_SYSTEM_ADDR |
1670                                         MPI26_IEEE_SGE_FLAGS_NSF_NVME_PRP;
1671
1672         /* Build first prp, sge need not to be page aligned*/
1673         ptr_first_sgl = sgl_ptr;
1674         sg_scmd = scsi_sglist(scmd);
1675         sge_addr = sg_dma_address(sg_scmd);
1676         sge_len = sg_dma_len(sg_scmd);
1677
1678         offset = (u32)(sge_addr & page_mask);
1679         first_prp_len = mr_nvme_pg_size - offset;
1680
1681         ptr_first_sgl->Address = cpu_to_le64(sge_addr);
1682         ptr_first_sgl->Length = cpu_to_le32(first_prp_len);
1683
1684         data_len -= first_prp_len;
1685
1686         if (sge_len > first_prp_len) {
1687                 sge_addr += first_prp_len;
1688                 sge_len -= first_prp_len;
1689         } else if (sge_len == first_prp_len) {
1690                 sg_scmd = sg_next(sg_scmd);
1691                 sge_addr = sg_dma_address(sg_scmd);
1692                 sge_len = sg_dma_len(sg_scmd);
1693         }
1694
1695         for (;;) {
1696                 offset = (u32)(sge_addr & page_mask);
1697
1698                 /* Put PRP pointer due to page boundary*/
1699                 page_mask_result = (uintptr_t)(ptr_sgl + 1) & page_mask;
1700                 if (unlikely(!page_mask_result)) {
1701                         scmd_printk(KERN_NOTICE,
1702                                     scmd, "page boundary ptr_sgl: 0x%p\n",
1703                                     ptr_sgl);
1704                         ptr_sgl_phys += 8;
1705                         *ptr_sgl = cpu_to_le64(ptr_sgl_phys);
1706                         ptr_sgl++;
1707                         num_prp_in_chain++;
1708                 }
1709
1710                 *ptr_sgl = cpu_to_le64(sge_addr);
1711                 ptr_sgl++;
1712                 ptr_sgl_phys += 8;
1713                 num_prp_in_chain++;
1714
1715                 sge_addr += mr_nvme_pg_size;
1716                 sge_len -= mr_nvme_pg_size;
1717                 data_len -= mr_nvme_pg_size;
1718
1719                 if (data_len <= 0)
1720                         break;
1721
1722                 if (sge_len > 0)
1723                         continue;
1724
1725                 sg_scmd = sg_next(sg_scmd);
1726                 sge_addr = sg_dma_address(sg_scmd);
1727                 sge_len = sg_dma_len(sg_scmd);
1728         }
1729
1730         main_chain_element->Length =
1731                         cpu_to_le32(num_prp_in_chain * sizeof(u64));
1732
1733         atomic_inc(&instance->prp_sgl);
1734         return build_prp;
1735 }
1736
1737 /**
1738  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
1739  * @instance:           Adapter soft state
1740  * @scp:                SCSI command from the mid-layer
1741  * @sgl_ptr:            SGL to be filled in
1742  * @cmd:                cmd we are working on
1743  * @sge_count           sge count
1744  *
1745  */
1746 static void
1747 megasas_make_sgl_fusion(struct megasas_instance *instance,
1748                         struct scsi_cmnd *scp,
1749                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1750                         struct megasas_cmd_fusion *cmd, int sge_count)
1751 {
1752         int i, sg_processed;
1753         struct scatterlist *os_sgl;
1754         struct fusion_context *fusion;
1755
1756         fusion = instance->ctrl_context;
1757
1758         if (fusion->adapter_type >= INVADER_SERIES) {
1759                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
1760                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1761                 sgl_ptr_end->Flags = 0;
1762         }
1763
1764         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1765                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
1766                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
1767                 sgl_ptr->Flags = 0;
1768                 if (fusion->adapter_type >= INVADER_SERIES)
1769                         if (i == sge_count - 1)
1770                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1771                 sgl_ptr++;
1772                 sg_processed = i + 1;
1773
1774                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
1775                     (sge_count > fusion->max_sge_in_main_msg)) {
1776
1777                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1778                         if (fusion->adapter_type >= INVADER_SERIES) {
1779                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
1780                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
1781                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1782                                         cmd->io_request->ChainOffset =
1783                                                 fusion->
1784                                                 chain_offset_io_request;
1785                                 else
1786                                         cmd->io_request->ChainOffset = 0;
1787                         } else
1788                                 cmd->io_request->ChainOffset =
1789                                         fusion->chain_offset_io_request;
1790
1791                         sg_chain = sgl_ptr;
1792                         /* Prepare chain element */
1793                         sg_chain->NextChainOffset = 0;
1794                         if (fusion->adapter_type >= INVADER_SERIES)
1795                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1796                         else
1797                                 sg_chain->Flags =
1798                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1799                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1800                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
1801                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
1802
1803                         sgl_ptr =
1804                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1805                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
1806                 }
1807         }
1808         atomic_inc(&instance->ieee_sgl);
1809 }
1810
1811 /**
1812  * megasas_make_sgl -   Build Scatter Gather List(SGLs)
1813  * @scp:                SCSI command pointer
1814  * @instance:           Soft instance of controller
1815  * @cmd:                Fusion command pointer
1816  *
1817  * This function will build sgls based on device type.
1818  * For nvme drives, there is different way of building sgls in nvme native
1819  * format- PRPs(Physical Region Page).
1820  *
1821  * Returns the number of sg lists actually used, zero if the sg lists
1822  * is NULL, or -ENOMEM if the mapping failed
1823  */
1824 static
1825 int megasas_make_sgl(struct megasas_instance *instance, struct scsi_cmnd *scp,
1826                      struct megasas_cmd_fusion *cmd)
1827 {
1828         int sge_count;
1829         bool build_prp = false;
1830         struct MPI25_IEEE_SGE_CHAIN64 *sgl_chain64;
1831
1832         sge_count = scsi_dma_map(scp);
1833
1834         if ((sge_count > instance->max_num_sge) || (sge_count <= 0))
1835                 return sge_count;
1836
1837         sgl_chain64 = (struct MPI25_IEEE_SGE_CHAIN64 *)&cmd->io_request->SGL;
1838         if ((le16_to_cpu(cmd->io_request->IoFlags) &
1839             MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) &&
1840             (cmd->pd_interface == NVME_PD))
1841                 build_prp = megasas_make_prp_nvme(instance, scp, sgl_chain64,
1842                                                   cmd, sge_count);
1843
1844         if (!build_prp)
1845                 megasas_make_sgl_fusion(instance, scp, sgl_chain64,
1846                                         cmd, sge_count);
1847
1848         return sge_count;
1849 }
1850
1851 /**
1852  * megasas_set_pd_lba - Sets PD LBA
1853  * @cdb:                CDB
1854  * @cdb_len:            cdb length
1855  * @start_blk:          Start block of IO
1856  *
1857  * Used to set the PD LBA in CDB for FP IOs
1858  */
1859 void
1860 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1861                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1862                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1863 {
1864         struct MR_LD_RAID *raid;
1865         u16 ld;
1866         u64 start_blk = io_info->pdBlock;
1867         u8 *cdb = io_request->CDB.CDB32;
1868         u32 num_blocks = io_info->numBlocks;
1869         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1870
1871         /* Check if T10 PI (DIF) is enabled for this LD */
1872         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1873         raid = MR_LdRaidGet(ld, local_map_ptr);
1874         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1875                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1876                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1877                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
1878
1879                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1880                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1881                 else
1882                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1883                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1884
1885                 /* LBA */
1886                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1887                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1888                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1889                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1890                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1891                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1892                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1893                 cdb[19] = (u8)(start_blk & 0xff);
1894
1895                 /* Logical block reference tag */
1896                 io_request->CDB.EEDP32.PrimaryReferenceTag =
1897                         cpu_to_be32(ref_tag);
1898                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
1899                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
1900
1901                 /* Transfer length */
1902                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1903                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1904                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1905                 cdb[31] = (u8)(num_blocks & 0xff);
1906
1907                 /* set SCSI IO EEDPFlags */
1908                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1909                         io_request->EEDPFlags = cpu_to_le16(
1910                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
1911                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1912                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1913                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1914                                 MPI25_SCSIIO_EEDPFLAGS_DO_NOT_DISABLE_MODE |
1915                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
1916                 } else {
1917                         io_request->EEDPFlags = cpu_to_le16(
1918                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1919                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
1920                 }
1921                 io_request->Control |= cpu_to_le32((0x4 << 26));
1922                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
1923         } else {
1924                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1925                 if (((cdb_len == 12) || (cdb_len == 16)) &&
1926                     (start_blk <= 0xffffffff)) {
1927                         if (cdb_len == 16) {
1928                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1929                                 flagvals = cdb[1];
1930                                 groupnum = cdb[14];
1931                                 control = cdb[15];
1932                         } else {
1933                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1934                                 flagvals = cdb[1];
1935                                 groupnum = cdb[10];
1936                                 control = cdb[11];
1937                         }
1938
1939                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1940
1941                         cdb[0] = opcode;
1942                         cdb[1] = flagvals;
1943                         cdb[6] = groupnum;
1944                         cdb[9] = control;
1945
1946                         /* Transfer length */
1947                         cdb[8] = (u8)(num_blocks & 0xff);
1948                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1949
1950                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
1951                         cdb_len = 10;
1952                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
1953                         /* Convert to 16 byte CDB for large LBA's */
1954                         switch (cdb_len) {
1955                         case 6:
1956                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
1957                                 control = cdb[5];
1958                                 break;
1959                         case 10:
1960                                 opcode =
1961                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
1962                                 flagvals = cdb[1];
1963                                 groupnum = cdb[6];
1964                                 control = cdb[9];
1965                                 break;
1966                         case 12:
1967                                 opcode =
1968                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
1969                                 flagvals = cdb[1];
1970                                 groupnum = cdb[10];
1971                                 control = cdb[11];
1972                                 break;
1973                         }
1974
1975                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1976
1977                         cdb[0] = opcode;
1978                         cdb[1] = flagvals;
1979                         cdb[14] = groupnum;
1980                         cdb[15] = control;
1981
1982                         /* Transfer length */
1983                         cdb[13] = (u8)(num_blocks & 0xff);
1984                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
1985                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
1986                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
1987
1988                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
1989                         cdb_len = 16;
1990                 }
1991
1992                 /* Normal case, just load LBA here */
1993                 switch (cdb_len) {
1994                 case 6:
1995                 {
1996                         u8 val = cdb[1] & 0xE0;
1997                         cdb[3] = (u8)(start_blk & 0xff);
1998                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
1999                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
2000                         break;
2001                 }
2002                 case 10:
2003                         cdb[5] = (u8)(start_blk & 0xff);
2004                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
2005                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
2006                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
2007                         break;
2008                 case 12:
2009                         cdb[5]    = (u8)(start_blk & 0xff);
2010                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
2011                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
2012                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
2013                         break;
2014                 case 16:
2015                         cdb[9]    = (u8)(start_blk & 0xff);
2016                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
2017                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
2018                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
2019                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
2020                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
2021                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
2022                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
2023                         break;
2024                 }
2025         }
2026 }
2027
2028 /**
2029  * megasas_stream_detect -      stream detection on read and and write IOs
2030  * @instance:           Adapter soft state
2031  * @cmd:                    Command to be prepared
2032  * @io_info:            IO Request info
2033  *
2034  */
2035
2036 /** stream detection on read and and write IOs */
2037 static void megasas_stream_detect(struct megasas_instance *instance,
2038                                   struct megasas_cmd_fusion *cmd,
2039                                   struct IO_REQUEST_INFO *io_info)
2040 {
2041         struct fusion_context *fusion = instance->ctrl_context;
2042         u32 device_id = io_info->ldTgtId;
2043         struct LD_STREAM_DETECT *current_ld_sd
2044                 = fusion->stream_detect_by_ld[device_id];
2045         u32 *track_stream = &current_ld_sd->mru_bit_map, stream_num;
2046         u32 shifted_values, unshifted_values;
2047         u32 index_value_mask, shifted_values_mask;
2048         int i;
2049         bool is_read_ahead = false;
2050         struct STREAM_DETECT *current_sd;
2051         /* find possible stream */
2052         for (i = 0; i < MAX_STREAMS_TRACKED; ++i) {
2053                 stream_num = (*track_stream >>
2054                         (i * BITS_PER_INDEX_STREAM)) &
2055                         STREAM_MASK;
2056                 current_sd = &current_ld_sd->stream_track[stream_num];
2057                 /* if we found a stream, update the raid
2058                  *  context and also update the mruBitMap
2059                  */
2060                 /*      boundary condition */
2061                 if ((current_sd->next_seq_lba) &&
2062                     (io_info->ldStartBlock >= current_sd->next_seq_lba) &&
2063                     (io_info->ldStartBlock <= (current_sd->next_seq_lba + 32)) &&
2064                     (current_sd->is_read == io_info->isRead)) {
2065
2066                         if ((io_info->ldStartBlock != current_sd->next_seq_lba) &&
2067                             ((!io_info->isRead) || (!is_read_ahead)))
2068                                 /*
2069                                  * Once the API availible we need to change this.
2070                                  * At this point we are not allowing any gap
2071                                  */
2072                                 continue;
2073
2074                         SET_STREAM_DETECTED(cmd->io_request->RaidContext.raid_context_g35);
2075                         current_sd->next_seq_lba =
2076                         io_info->ldStartBlock + io_info->numBlocks;
2077                         /*
2078                          *      update the mruBitMap LRU
2079                          */
2080                         shifted_values_mask =
2081                                 (1 <<  i * BITS_PER_INDEX_STREAM) - 1;
2082                         shifted_values = ((*track_stream & shifted_values_mask)
2083                                                 << BITS_PER_INDEX_STREAM);
2084                         index_value_mask =
2085                                 STREAM_MASK << i * BITS_PER_INDEX_STREAM;
2086                         unshifted_values =
2087                                 *track_stream & ~(shifted_values_mask |
2088                                 index_value_mask);
2089                         *track_stream =
2090                                 unshifted_values | shifted_values | stream_num;
2091                         return;
2092                 }
2093         }
2094         /*
2095          * if we did not find any stream, create a new one
2096          * from the least recently used
2097          */
2098         stream_num = (*track_stream >>
2099                 ((MAX_STREAMS_TRACKED - 1) * BITS_PER_INDEX_STREAM)) &
2100                 STREAM_MASK;
2101         current_sd = &current_ld_sd->stream_track[stream_num];
2102         current_sd->is_read = io_info->isRead;
2103         current_sd->next_seq_lba = io_info->ldStartBlock + io_info->numBlocks;
2104         *track_stream = (((*track_stream & ZERO_LAST_STREAM) << 4) | stream_num);
2105         return;
2106 }
2107
2108 /**
2109  * megasas_set_raidflag_cpu_affinity - This function sets the cpu
2110  * affinity (cpu of the controller) and raid_flags in the raid context
2111  * based on IO type.
2112  *
2113  * @praid_context:      IO RAID context
2114  * @raid:               LD raid map
2115  * @fp_possible:        Is fast path possible?
2116  * @is_read:            Is read IO?
2117  *
2118  */
2119 static void
2120 megasas_set_raidflag_cpu_affinity(union RAID_CONTEXT_UNION *praid_context,
2121                                   struct MR_LD_RAID *raid, bool fp_possible,
2122                                   u8 is_read, u32 scsi_buff_len)
2123 {
2124         u8 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2125         struct RAID_CONTEXT_G35 *rctx_g35;
2126
2127         rctx_g35 = &praid_context->raid_context_g35;
2128         if (fp_possible) {
2129                 if (is_read) {
2130                         if ((raid->cpuAffinity.pdRead.cpu0) &&
2131                             (raid->cpuAffinity.pdRead.cpu1))
2132                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2133                         else if (raid->cpuAffinity.pdRead.cpu1)
2134                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2135                 } else {
2136                         if ((raid->cpuAffinity.pdWrite.cpu0) &&
2137                             (raid->cpuAffinity.pdWrite.cpu1))
2138                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2139                         else if (raid->cpuAffinity.pdWrite.cpu1)
2140                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2141                         /* Fast path cache by pass capable R0/R1 VD */
2142                         if ((raid->level <= 1) &&
2143                             (raid->capability.fp_cache_bypass_capable)) {
2144                                 rctx_g35->routing_flags |=
2145                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SLD_SHIFT);
2146                                 rctx_g35->raid_flags =
2147                                         (MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS
2148                                         << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2149                         }
2150                 }
2151         } else {
2152                 if (is_read) {
2153                         if ((raid->cpuAffinity.ldRead.cpu0) &&
2154                             (raid->cpuAffinity.ldRead.cpu1))
2155                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2156                         else if (raid->cpuAffinity.ldRead.cpu1)
2157                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2158                 } else {
2159                         if ((raid->cpuAffinity.ldWrite.cpu0) &&
2160                             (raid->cpuAffinity.ldWrite.cpu1))
2161                                 cpu_sel = MR_RAID_CTX_CPUSEL_FCFS;
2162                         else if (raid->cpuAffinity.ldWrite.cpu1)
2163                                 cpu_sel = MR_RAID_CTX_CPUSEL_1;
2164
2165                         if (is_stream_detected(rctx_g35) &&
2166                             ((raid->level == 5) || (raid->level == 6)) &&
2167                             (raid->writeMode == MR_RL_WRITE_THROUGH_MODE) &&
2168                             (cpu_sel == MR_RAID_CTX_CPUSEL_FCFS))
2169                                 cpu_sel = MR_RAID_CTX_CPUSEL_0;
2170                 }
2171         }
2172
2173         rctx_g35->routing_flags |=
2174                 (cpu_sel << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2175
2176         /* Always give priority to MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2177          * vs MR_RAID_FLAGS_IO_SUB_TYPE_CACHE_BYPASS.
2178          * IO Subtype is not bitmap.
2179          */
2180         if ((raid->level == 1) && (!is_read)) {
2181                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2182                         praid_context->raid_context_g35.raid_flags =
2183                                 (MR_RAID_FLAGS_IO_SUB_TYPE_LDIO_BW_LIMIT
2184                                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT);
2185         }
2186 }
2187
2188 /**
2189  * megasas_build_ldio_fusion -  Prepares IOs to devices
2190  * @instance:           Adapter soft state
2191  * @scp:                SCSI command
2192  * @cmd:                Command to be prepared
2193  *
2194  * Prepares the io_request and chain elements (sg_frame) for IO
2195  * The IO can be for PD (Fast Path) or LD
2196  */
2197 void
2198 megasas_build_ldio_fusion(struct megasas_instance *instance,
2199                           struct scsi_cmnd *scp,
2200                           struct megasas_cmd_fusion *cmd)
2201 {
2202         bool fp_possible;
2203         u16 ld;
2204         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
2205         u32 scsi_buff_len;
2206         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2207         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2208         struct IO_REQUEST_INFO io_info;
2209         struct fusion_context *fusion;
2210         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2211         u8 *raidLUN;
2212         unsigned long spinlock_flags;
2213         union RAID_CONTEXT_UNION *praid_context;
2214         struct MR_LD_RAID *raid = NULL;
2215         struct MR_PRIV_DEVICE *mrdev_priv;
2216
2217         device_id = MEGASAS_DEV_INDEX(scp);
2218
2219         fusion = instance->ctrl_context;
2220
2221         io_request = cmd->io_request;
2222         io_request->RaidContext.raid_context.virtual_disk_tgt_id =
2223                 cpu_to_le16(device_id);
2224         io_request->RaidContext.raid_context.status = 0;
2225         io_request->RaidContext.raid_context.ex_status = 0;
2226
2227         req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2228
2229         start_lba_lo = 0;
2230         start_lba_hi = 0;
2231         fp_possible = false;
2232
2233         /*
2234          * 6-byte READ(0x08) or WRITE(0x0A) cdb
2235          */
2236         if (scp->cmd_len == 6) {
2237                 datalength = (u32) scp->cmnd[4];
2238                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
2239                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
2240
2241                 start_lba_lo &= 0x1FFFFF;
2242         }
2243
2244         /*
2245          * 10-byte READ(0x28) or WRITE(0x2A) cdb
2246          */
2247         else if (scp->cmd_len == 10) {
2248                 datalength = (u32) scp->cmnd[8] |
2249                         ((u32) scp->cmnd[7] << 8);
2250                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2251                         ((u32) scp->cmnd[3] << 16) |
2252                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2253         }
2254
2255         /*
2256          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
2257          */
2258         else if (scp->cmd_len == 12) {
2259                 datalength = ((u32) scp->cmnd[6] << 24) |
2260                         ((u32) scp->cmnd[7] << 16) |
2261                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2262                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
2263                         ((u32) scp->cmnd[3] << 16) |
2264                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2265         }
2266
2267         /*
2268          * 16-byte READ(0x88) or WRITE(0x8A) cdb
2269          */
2270         else if (scp->cmd_len == 16) {
2271                 datalength = ((u32) scp->cmnd[10] << 24) |
2272                         ((u32) scp->cmnd[11] << 16) |
2273                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
2274                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
2275                         ((u32) scp->cmnd[7] << 16) |
2276                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
2277
2278                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
2279                         ((u32) scp->cmnd[3] << 16) |
2280                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
2281         }
2282
2283         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
2284         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
2285         io_info.numBlocks = datalength;
2286         io_info.ldTgtId = device_id;
2287         io_info.r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2288         scsi_buff_len = scsi_bufflen(scp);
2289         io_request->DataLength = cpu_to_le32(scsi_buff_len);
2290
2291         if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2292                 io_info.isRead = 1;
2293
2294         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2295         ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2296
2297         if (ld < instance->fw_supported_vd_count)
2298                 raid = MR_LdRaidGet(ld, local_map_ptr);
2299
2300         if (!raid || (!fusion->fast_path_io)) {
2301                 io_request->RaidContext.raid_context.reg_lock_flags  = 0;
2302                 fp_possible = false;
2303         } else {
2304                 if (MR_BuildRaidContext(instance, &io_info,
2305                                         &io_request->RaidContext.raid_context,
2306                                         local_map_ptr, &raidLUN))
2307                         fp_possible = (io_info.fpOkForIo > 0) ? true : false;
2308         }
2309
2310         /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
2311            id by default, not CPU group id, otherwise all MSI-X queues won't
2312            be utilized */
2313         cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
2314                 raw_smp_processor_id() % instance->msix_vectors : 0;
2315
2316         praid_context = &io_request->RaidContext;
2317
2318         if (instance->is_ventura) {
2319                 spin_lock_irqsave(&instance->stream_lock, spinlock_flags);
2320                 megasas_stream_detect(instance, cmd, &io_info);
2321                 spin_unlock_irqrestore(&instance->stream_lock, spinlock_flags);
2322                 /* In ventura if stream detected for a read and it is read ahead
2323                  *  capable make this IO as LDIO
2324                  */
2325                 if (is_stream_detected(&io_request->RaidContext.raid_context_g35) &&
2326                     io_info.isRead && io_info.ra_capable)
2327                         fp_possible = false;
2328
2329                 /* FP for Optimal raid level 1.
2330                  * All large RAID-1 writes (> 32 KiB, both WT and WB modes)
2331                  * are built by the driver as LD I/Os.
2332                  * All small RAID-1 WT writes (<= 32 KiB) are built as FP I/Os
2333                  * (there is never a reason to process these as buffered writes)
2334                  * All small RAID-1 WB writes (<= 32 KiB) are built as FP I/Os
2335                  * with the SLD bit asserted.
2336                  */
2337                 if (io_info.r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2338                         mrdev_priv = scp->device->hostdata;
2339
2340                         if (atomic_inc_return(&instance->fw_outstanding) >
2341                                 (instance->host->can_queue)) {
2342                                 fp_possible = false;
2343                                 atomic_dec(&instance->fw_outstanding);
2344                         } else if ((scsi_buff_len > MR_LARGE_IO_MIN_SIZE) ||
2345                                    (atomic_dec_if_positive(&mrdev_priv->r1_ldio_hint) > 0)) {
2346                                 fp_possible = false;
2347                                 atomic_dec(&instance->fw_outstanding);
2348                                 if (scsi_buff_len > MR_LARGE_IO_MIN_SIZE)
2349                                         atomic_set(&mrdev_priv->r1_ldio_hint,
2350                                                    instance->r1_ldio_hint_default);
2351                         }
2352                 }
2353
2354                 /* If raid is NULL, set CPU affinity to default CPU0 */
2355                 if (raid)
2356                         megasas_set_raidflag_cpu_affinity(praid_context,
2357                                 raid, fp_possible, io_info.isRead,
2358                                 scsi_buff_len);
2359                 else
2360                         praid_context->raid_context_g35.routing_flags |=
2361                                 (MR_RAID_CTX_CPUSEL_0 << MR_RAID_CTX_ROUTINGFLAGS_CPUSEL_SHIFT);
2362         }
2363
2364         if (fp_possible) {
2365                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
2366                                    local_map_ptr, start_lba_lo);
2367                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2368                 cmd->request_desc->SCSIIO.RequestFlags =
2369                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
2370                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2371                 if (fusion->adapter_type == INVADER_SERIES) {
2372                         if (io_request->RaidContext.raid_context.reg_lock_flags ==
2373                             REGION_TYPE_UNUSED)
2374                                 cmd->request_desc->SCSIIO.RequestFlags =
2375                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2376                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2377                         io_request->RaidContext.raid_context.type
2378                                 = MPI2_TYPE_CUDA;
2379                         io_request->RaidContext.raid_context.nseg = 0x1;
2380                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2381                         io_request->RaidContext.raid_context.reg_lock_flags |=
2382                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
2383                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
2384                 } else if (instance->is_ventura) {
2385                         io_request->RaidContext.raid_context_g35.nseg_type |=
2386                                                 (1 << RAID_CONTEXT_NSEG_SHIFT);
2387                         io_request->RaidContext.raid_context_g35.nseg_type |=
2388                                                 (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2389                         io_request->RaidContext.raid_context_g35.routing_flags |=
2390                                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2391                         io_request->IoFlags |=
2392                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2393                 }
2394                 if (fusion->load_balance_info &&
2395                         (fusion->load_balance_info[device_id].loadBalanceFlag) &&
2396                         (io_info.isRead)) {
2397                         io_info.devHandle =
2398                                 get_updated_dev_handle(instance,
2399                                         &fusion->load_balance_info[device_id],
2400                                         &io_info, local_map_ptr);
2401                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
2402                         cmd->pd_r1_lb = io_info.pd_after_lb;
2403                         if (instance->is_ventura)
2404                                 io_request->RaidContext.raid_context_g35.span_arm
2405                                         = io_info.span_arm;
2406                         else
2407                                 io_request->RaidContext.raid_context.span_arm
2408                                         = io_info.span_arm;
2409
2410                 } else
2411                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
2412
2413                 if (instance->is_ventura)
2414                         cmd->r1_alt_dev_handle = io_info.r1_alt_dev_handle;
2415                 else
2416                         cmd->r1_alt_dev_handle = MR_DEVHANDLE_INVALID;
2417
2418                 if ((raidLUN[0] == 1) &&
2419                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
2420                         instance->dev_handle = !(instance->dev_handle);
2421                         io_info.devHandle =
2422                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
2423                 }
2424
2425                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
2426                 io_request->DevHandle = io_info.devHandle;
2427                 cmd->pd_interface = io_info.pd_interface;
2428                 /* populate the LUN field */
2429                 memcpy(io_request->LUN, raidLUN, 8);
2430         } else {
2431                 io_request->RaidContext.raid_context.timeout_value =
2432                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
2433                 cmd->request_desc->SCSIIO.RequestFlags =
2434                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
2435                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2436                 if (fusion->adapter_type == INVADER_SERIES) {
2437                         if (io_info.do_fp_rlbypass ||
2438                         (io_request->RaidContext.raid_context.reg_lock_flags
2439                                         == REGION_TYPE_UNUSED))
2440                                 cmd->request_desc->SCSIIO.RequestFlags =
2441                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
2442                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2443                         io_request->RaidContext.raid_context.type
2444                                 = MPI2_TYPE_CUDA;
2445                         io_request->RaidContext.raid_context.reg_lock_flags |=
2446                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
2447                                  MR_RL_FLAGS_SEQ_NUM_ENABLE);
2448                         io_request->RaidContext.raid_context.nseg = 0x1;
2449                 } else if (instance->is_ventura) {
2450                         io_request->RaidContext.raid_context_g35.routing_flags |=
2451                                         (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2452                         io_request->RaidContext.raid_context_g35.nseg_type |=
2453                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
2454                         io_request->RaidContext.raid_context_g35.nseg_type |=
2455                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2456                 }
2457                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2458                 io_request->DevHandle = cpu_to_le16(device_id);
2459
2460         } /* Not FP */
2461 }
2462
2463 /**
2464  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
2465  * @instance:           Adapter soft state
2466  * @scp:                SCSI command
2467  * @cmd:                Command to be prepared
2468  *
2469  * Prepares the io_request frame for non-rw io cmds for vd.
2470  */
2471 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
2472                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
2473 {
2474         u32 device_id;
2475         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2476         u16 ld;
2477         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2478         struct fusion_context *fusion = instance->ctrl_context;
2479         u8                          span, physArm;
2480         __le16                      devHandle;
2481         u32                         arRef, pd;
2482         struct MR_LD_RAID                  *raid;
2483         struct RAID_CONTEXT                *pRAID_Context;
2484         u8 fp_possible = 1;
2485
2486         io_request = cmd->io_request;
2487         device_id = MEGASAS_DEV_INDEX(scmd);
2488         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2489         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2490         /* get RAID_Context pointer */
2491         pRAID_Context = &io_request->RaidContext.raid_context;
2492         /* Check with FW team */
2493         pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2494         pRAID_Context->reg_lock_row_lba    = 0;
2495         pRAID_Context->reg_lock_length    = 0;
2496
2497         if (fusion->fast_path_io && (
2498                 device_id < instance->fw_supported_vd_count)) {
2499
2500                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
2501                 if (ld >= instance->fw_supported_vd_count)
2502                         fp_possible = 0;
2503                 else {
2504                         raid = MR_LdRaidGet(ld, local_map_ptr);
2505                         if (!(raid->capability.fpNonRWCapable))
2506                                 fp_possible = 0;
2507                 }
2508         } else
2509                 fp_possible = 0;
2510
2511         if (!fp_possible) {
2512                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2513                 io_request->DevHandle = cpu_to_le16(device_id);
2514                 io_request->LUN[1] = scmd->device->lun;
2515                 pRAID_Context->timeout_value =
2516                         cpu_to_le16 (scmd->request->timeout / HZ);
2517                 cmd->request_desc->SCSIIO.RequestFlags =
2518                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2519                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2520         } else {
2521
2522                 /* set RAID context values */
2523                 pRAID_Context->config_seq_num = raid->seqNum;
2524                 if (!instance->is_ventura)
2525                         pRAID_Context->reg_lock_flags = REGION_TYPE_SHARED_READ;
2526                 pRAID_Context->timeout_value =
2527                         cpu_to_le16(raid->fpIoTimeoutForLd);
2528
2529                 /* get the DevHandle for the PD (since this is
2530                    fpNonRWCapable, this is a single disk RAID0) */
2531                 span = physArm = 0;
2532                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
2533                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
2534                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
2535
2536                 /* build request descriptor */
2537                 cmd->request_desc->SCSIIO.RequestFlags =
2538                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2539                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2540                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
2541
2542                 /* populate the LUN field */
2543                 memcpy(io_request->LUN, raid->LUN, 8);
2544
2545                 /* build the raidScsiIO structure */
2546                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2547                 io_request->DevHandle = devHandle;
2548         }
2549 }
2550
2551 /**
2552  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
2553  * @instance:           Adapter soft state
2554  * @scp:                SCSI command
2555  * @cmd:                Command to be prepared
2556  * @fp_possible:        parameter to detect fast path or firmware path io.
2557  *
2558  * Prepares the io_request frame for rw/non-rw io cmds for syspds
2559  */
2560 static void
2561 megasas_build_syspd_fusion(struct megasas_instance *instance,
2562         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
2563         bool fp_possible)
2564 {
2565         u32 device_id;
2566         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
2567         u16 pd_index = 0;
2568         u16 os_timeout_value;
2569         u16 timeout_limit;
2570         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
2571         struct RAID_CONTEXT     *pRAID_Context;
2572         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
2573         struct MR_PRIV_DEVICE *mr_device_priv_data;
2574         struct fusion_context *fusion = instance->ctrl_context;
2575         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
2576
2577         device_id = MEGASAS_DEV_INDEX(scmd);
2578         pd_index = MEGASAS_PD_INDEX(scmd);
2579         os_timeout_value = scmd->request->timeout / HZ;
2580         mr_device_priv_data = scmd->device->hostdata;
2581         cmd->pd_interface = mr_device_priv_data->interface_type;
2582
2583         io_request = cmd->io_request;
2584         /* get RAID_Context pointer */
2585         pRAID_Context = &io_request->RaidContext.raid_context;
2586         pRAID_Context->reg_lock_flags = 0;
2587         pRAID_Context->reg_lock_row_lba = 0;
2588         pRAID_Context->reg_lock_length = 0;
2589         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
2590         io_request->LUN[1] = scmd->device->lun;
2591         pRAID_Context->raid_flags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
2592                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
2593
2594         /* If FW supports PD sequence number */
2595         if (instance->use_seqnum_jbod_fp &&
2596                 instance->pd_list[pd_index].driveType == TYPE_DISK) {
2597                 /* TgtId must be incremented by 255 as jbod seq number is index
2598                  * below raid map
2599                  */
2600                  /* More than 256 PD/JBOD support for Ventura */
2601                 if (instance->support_morethan256jbod)
2602                         pRAID_Context->virtual_disk_tgt_id =
2603                                 pd_sync->seq[pd_index].pd_target_id;
2604                 else
2605                         pRAID_Context->virtual_disk_tgt_id =
2606                                 cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
2607                 pRAID_Context->config_seq_num = pd_sync->seq[pd_index].seqNum;
2608                 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
2609                 if (instance->is_ventura) {
2610                         io_request->RaidContext.raid_context_g35.routing_flags |=
2611                                 (1 << MR_RAID_CTX_ROUTINGFLAGS_SQN_SHIFT);
2612                         io_request->RaidContext.raid_context_g35.nseg_type |=
2613                                                         (1 << RAID_CONTEXT_NSEG_SHIFT);
2614                         io_request->RaidContext.raid_context_g35.nseg_type |=
2615                                                         (MPI2_TYPE_CUDA << RAID_CONTEXT_TYPE_SHIFT);
2616                 } else {
2617                         pRAID_Context->type = MPI2_TYPE_CUDA;
2618                         pRAID_Context->nseg = 0x1;
2619                         pRAID_Context->reg_lock_flags |=
2620                                 (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
2621                 }
2622         } else if (fusion->fast_path_io) {
2623                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2624                 pRAID_Context->config_seq_num = 0;
2625                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2626                 io_request->DevHandle =
2627                         local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
2628         } else {
2629                 /* Want to send all IO via FW path */
2630                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2631                 pRAID_Context->config_seq_num = 0;
2632                 io_request->DevHandle = cpu_to_le16(0xFFFF);
2633         }
2634
2635         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
2636         cmd->request_desc->SCSIIO.MSIxIndex =
2637                 instance->msix_vectors ?
2638                 (raw_smp_processor_id() % instance->msix_vectors) : 0;
2639
2640
2641         if (!fp_possible) {
2642                 /* system pd firmware path */
2643                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2644                 cmd->request_desc->SCSIIO.RequestFlags =
2645                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2646                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2647                 pRAID_Context->timeout_value = cpu_to_le16(os_timeout_value);
2648                 pRAID_Context->virtual_disk_tgt_id = cpu_to_le16(device_id);
2649         } else {
2650                 /* system pd Fast Path */
2651                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2652                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
2653                                 255 : 0xFFFF;
2654                 pRAID_Context->timeout_value =
2655                         cpu_to_le16((os_timeout_value > timeout_limit) ?
2656                         timeout_limit : os_timeout_value);
2657                 if (fusion->adapter_type >= INVADER_SERIES)
2658                         io_request->IoFlags |=
2659                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2660
2661                 cmd->request_desc->SCSIIO.RequestFlags =
2662                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2663                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2664         }
2665 }
2666
2667 /**
2668  * megasas_build_io_fusion -    Prepares IOs to devices
2669  * @instance:           Adapter soft state
2670  * @scp:                SCSI command
2671  * @cmd:                Command to be prepared
2672  *
2673  * Invokes helper functions to prepare request frames
2674  * and sets flags appropriate for IO/Non-IO cmd
2675  */
2676 int
2677 megasas_build_io_fusion(struct megasas_instance *instance,
2678                         struct scsi_cmnd *scp,
2679                         struct megasas_cmd_fusion *cmd)
2680 {
2681         int sge_count;
2682         u8  cmd_type;
2683         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
2684         struct MR_PRIV_DEVICE *mr_device_priv_data;
2685         mr_device_priv_data = scp->device->hostdata;
2686
2687         /* Zero out some fields so they don't get reused */
2688         memset(io_request->LUN, 0x0, 8);
2689         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
2690         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
2691         io_request->EEDPFlags = 0;
2692         io_request->Control = 0;
2693         io_request->EEDPBlockSize = 0;
2694         io_request->ChainOffset = 0;
2695         io_request->RaidContext.raid_context.raid_flags = 0;
2696         io_request->RaidContext.raid_context.type = 0;
2697         io_request->RaidContext.raid_context.nseg = 0;
2698
2699         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
2700         /*
2701          * Just the CDB length,rest of the Flags are zero
2702          * This will be modified for FP in build_ldio_fusion
2703          */
2704         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
2705
2706         switch (cmd_type = megasas_cmd_type(scp)) {
2707         case READ_WRITE_LDIO:
2708                 megasas_build_ldio_fusion(instance, scp, cmd);
2709                 break;
2710         case NON_READ_WRITE_LDIO:
2711                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
2712                 break;
2713         case READ_WRITE_SYSPDIO:
2714                 megasas_build_syspd_fusion(instance, scp, cmd, true);
2715                 break;
2716         case NON_READ_WRITE_SYSPDIO:
2717                 if (instance->secure_jbod_support ||
2718                     mr_device_priv_data->is_tm_capable)
2719                         megasas_build_syspd_fusion(instance, scp, cmd, false);
2720                 else
2721                         megasas_build_syspd_fusion(instance, scp, cmd, true);
2722                 break;
2723         default:
2724                 break;
2725         }
2726
2727         /*
2728          * Construct SGL
2729          */
2730
2731         sge_count = megasas_make_sgl(instance, scp, cmd);
2732
2733         if (sge_count > instance->max_num_sge || (sge_count < 0)) {
2734                 dev_err(&instance->pdev->dev,
2735                         "%s %d sge_count (%d) is out of range. Range is:  0-%d\n",
2736                         __func__, __LINE__, sge_count, instance->max_num_sge);
2737                 return 1;
2738         }
2739
2740         if (instance->is_ventura) {
2741                 set_num_sge(&io_request->RaidContext.raid_context_g35, sge_count);
2742                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.routing_flags);
2743                 cpu_to_le16s(&io_request->RaidContext.raid_context_g35.nseg_type);
2744         } else {
2745                 /* numSGE store lower 8 bit of sge_count.
2746                  * numSGEExt store higher 8 bit of sge_count
2747                  */
2748                 io_request->RaidContext.raid_context.num_sge = sge_count;
2749                 io_request->RaidContext.raid_context.num_sge_ext =
2750                         (u8)(sge_count >> 8);
2751         }
2752
2753         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
2754
2755         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
2756                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
2757         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2758                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
2759
2760         io_request->SGLOffset0 =
2761                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
2762
2763         io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
2764         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
2765
2766         cmd->scmd = scp;
2767         scp->SCp.ptr = (char *)cmd;
2768
2769         return 0;
2770 }
2771
2772 static union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2773 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
2774 {
2775         u8 *p;
2776         struct fusion_context *fusion;
2777
2778         fusion = instance->ctrl_context;
2779         p = fusion->req_frames_desc +
2780                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) * index;
2781
2782         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
2783 }
2784
2785
2786 /* megasas_prepate_secondRaid1_IO
2787  *  It prepares the raid 1 second IO
2788  */
2789 void megasas_prepare_secondRaid1_IO(struct megasas_instance *instance,
2790                             struct megasas_cmd_fusion *cmd,
2791                             struct megasas_cmd_fusion *r1_cmd)
2792 {
2793         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc, *req_desc2 = NULL;
2794         struct fusion_context *fusion;
2795         fusion = instance->ctrl_context;
2796         req_desc = cmd->request_desc;
2797         /* copy the io request frame as well as 8 SGEs data for r1 command*/
2798         memcpy(r1_cmd->io_request, cmd->io_request,
2799                (sizeof(struct MPI2_RAID_SCSI_IO_REQUEST)));
2800         memcpy(&r1_cmd->io_request->SGL, &cmd->io_request->SGL,
2801                (fusion->max_sge_in_main_msg * sizeof(union MPI2_SGE_IO_UNION)));
2802         /*sense buffer is different for r1 command*/
2803         r1_cmd->io_request->SenseBufferLowAddress =
2804                         cpu_to_le32(r1_cmd->sense_phys_addr);
2805         r1_cmd->scmd = cmd->scmd;
2806         req_desc2 = megasas_get_request_descriptor(instance,
2807                                                    (r1_cmd->index - 1));
2808         req_desc2->Words = 0;
2809         r1_cmd->request_desc = req_desc2;
2810         req_desc2->SCSIIO.SMID = cpu_to_le16(r1_cmd->index);
2811         req_desc2->SCSIIO.RequestFlags = req_desc->SCSIIO.RequestFlags;
2812         r1_cmd->request_desc->SCSIIO.DevHandle = cmd->r1_alt_dev_handle;
2813         r1_cmd->io_request->DevHandle = cmd->r1_alt_dev_handle;
2814         r1_cmd->r1_alt_dev_handle = cmd->io_request->DevHandle;
2815         cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
2816                         cpu_to_le16(r1_cmd->index);
2817         r1_cmd->io_request->RaidContext.raid_context_g35.smid.peer_smid =
2818                         cpu_to_le16(cmd->index);
2819         /*MSIxIndex of both commands request descriptors should be same*/
2820         r1_cmd->request_desc->SCSIIO.MSIxIndex =
2821                         cmd->request_desc->SCSIIO.MSIxIndex;
2822         /*span arm is different for r1 cmd*/
2823         r1_cmd->io_request->RaidContext.raid_context_g35.span_arm =
2824                         cmd->io_request->RaidContext.raid_context_g35.span_arm + 1;
2825 }
2826
2827 /**
2828  * megasas_build_and_issue_cmd_fusion -Main routine for building and
2829  *                                     issuing non IOCTL cmd
2830  * @instance:                   Adapter soft state
2831  * @scmd:                       pointer to scsi cmd from OS
2832  */
2833 static u32
2834 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
2835                                    struct scsi_cmnd *scmd)
2836 {
2837         struct megasas_cmd_fusion *cmd, *r1_cmd = NULL;
2838         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2839         u32 index;
2840         struct fusion_context *fusion;
2841
2842         fusion = instance->ctrl_context;
2843
2844         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
2845                 instance->ldio_threshold &&
2846                 (atomic_inc_return(&instance->ldio_outstanding) >
2847                 instance->ldio_threshold)) {
2848                 atomic_dec(&instance->ldio_outstanding);
2849                 return SCSI_MLQUEUE_DEVICE_BUSY;
2850         }
2851
2852         if (atomic_inc_return(&instance->fw_outstanding) >
2853                         instance->host->can_queue) {
2854                 atomic_dec(&instance->fw_outstanding);
2855                 return SCSI_MLQUEUE_HOST_BUSY;
2856         }
2857
2858         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
2859
2860         if (!cmd) {
2861                 atomic_dec(&instance->fw_outstanding);
2862                 return SCSI_MLQUEUE_HOST_BUSY;
2863         }
2864
2865         index = cmd->index;
2866
2867         req_desc = megasas_get_request_descriptor(instance, index-1);
2868
2869         req_desc->Words = 0;
2870         cmd->request_desc = req_desc;
2871
2872         if (megasas_build_io_fusion(instance, scmd, cmd)) {
2873                 megasas_return_cmd_fusion(instance, cmd);
2874                 dev_err(&instance->pdev->dev, "Error building command\n");
2875                 cmd->request_desc = NULL;
2876                 atomic_dec(&instance->fw_outstanding);
2877                 return SCSI_MLQUEUE_HOST_BUSY;
2878         }
2879
2880         req_desc = cmd->request_desc;
2881         req_desc->SCSIIO.SMID = cpu_to_le16(index);
2882
2883         if (cmd->io_request->ChainOffset != 0 &&
2884             cmd->io_request->ChainOffset != 0xF)
2885                 dev_err(&instance->pdev->dev, "The chain offset value is not "
2886                        "correct : %x\n", cmd->io_request->ChainOffset);
2887         /*
2888          *      if it is raid 1/10 fp write capable.
2889          *      try to get second command from pool and construct it.
2890          *      From FW, it has confirmed that lba values of two PDs
2891          *      corresponds to single R1/10 LD are always same
2892          *
2893          */
2894         /*      driver side count always should be less than max_fw_cmds
2895          *      to get new command
2896          */
2897         if (cmd->r1_alt_dev_handle != MR_DEVHANDLE_INVALID) {
2898                 r1_cmd = megasas_get_cmd_fusion(instance,
2899                                 (scmd->request->tag + instance->max_fw_cmds));
2900                 megasas_prepare_secondRaid1_IO(instance, cmd, r1_cmd);
2901         }
2902
2903
2904         /*
2905          * Issue the command to the FW
2906          */
2907
2908         megasas_fire_cmd_fusion(instance, req_desc);
2909
2910         if (r1_cmd)
2911                 megasas_fire_cmd_fusion(instance, r1_cmd->request_desc);
2912
2913
2914         return 0;
2915 }
2916
2917 /**
2918  * megasas_complete_r1_command -
2919  * completes R1 FP write commands which has valid peer smid
2920  * @instance:                   Adapter soft state
2921  * @cmd_fusion:                 MPT command frame
2922  *
2923  */
2924 static inline void
2925 megasas_complete_r1_command(struct megasas_instance *instance,
2926                             struct megasas_cmd_fusion *cmd)
2927 {
2928         u8 *sense, status, ex_status;
2929         u32 data_length;
2930         u16 peer_smid;
2931         struct fusion_context *fusion;
2932         struct megasas_cmd_fusion *r1_cmd = NULL;
2933         struct scsi_cmnd *scmd_local = NULL;
2934         struct RAID_CONTEXT_G35 *rctx_g35;
2935
2936         rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
2937         fusion = instance->ctrl_context;
2938         peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid);
2939
2940         r1_cmd = fusion->cmd_list[peer_smid - 1];
2941         scmd_local = cmd->scmd;
2942         status = rctx_g35->status;
2943         ex_status = rctx_g35->ex_status;
2944         data_length = cmd->io_request->DataLength;
2945         sense = cmd->sense;
2946
2947         cmd->cmd_completed = true;
2948
2949         /* Check if peer command is completed or not*/
2950         if (r1_cmd->cmd_completed) {
2951                 rctx_g35 = &r1_cmd->io_request->RaidContext.raid_context_g35;
2952                 if (rctx_g35->status != MFI_STAT_OK) {
2953                         status = rctx_g35->status;
2954                         ex_status = rctx_g35->ex_status;
2955                         data_length = r1_cmd->io_request->DataLength;
2956                         sense = r1_cmd->sense;
2957                 }
2958
2959                 megasas_return_cmd_fusion(instance, r1_cmd);
2960                 map_cmd_status(fusion, scmd_local, status, ex_status,
2961                                le32_to_cpu(data_length), sense);
2962                 if (instance->ldio_threshold &&
2963                     megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
2964                         atomic_dec(&instance->ldio_outstanding);
2965                 scmd_local->SCp.ptr = NULL;
2966                 megasas_return_cmd_fusion(instance, cmd);
2967                 scsi_dma_unmap(scmd_local);
2968                 scmd_local->scsi_done(scmd_local);
2969         }
2970 }
2971
2972 /**
2973  * complete_cmd_fusion -        Completes command
2974  * @instance:                   Adapter soft state
2975  * Completes all commands that is in reply descriptor queue
2976  */
2977 int
2978 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
2979 {
2980         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
2981         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
2982         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
2983         struct fusion_context *fusion;
2984         struct megasas_cmd *cmd_mfi;
2985         struct megasas_cmd_fusion *cmd_fusion;
2986         u16 smid, num_completed;
2987         u8 reply_descript_type, *sense, status, extStatus;
2988         u32 device_id, data_length;
2989         union desc_value d_val;
2990         struct LD_LOAD_BALANCE_INFO *lbinfo;
2991         int threshold_reply_count = 0;
2992         struct scsi_cmnd *scmd_local = NULL;
2993         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
2994         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
2995
2996         fusion = instance->ctrl_context;
2997
2998         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2999                 return IRQ_HANDLED;
3000
3001         desc = fusion->reply_frames_desc[MSIxIndex] +
3002                                 fusion->last_reply_idx[MSIxIndex];
3003
3004         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3005
3006         d_val.word = desc->Words;
3007
3008         reply_descript_type = reply_desc->ReplyFlags &
3009                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3010
3011         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3012                 return IRQ_NONE;
3013
3014         num_completed = 0;
3015
3016         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
3017                d_val.u.high != cpu_to_le32(UINT_MAX)) {
3018
3019                 smid = le16_to_cpu(reply_desc->SMID);
3020                 cmd_fusion = fusion->cmd_list[smid - 1];
3021                 scsi_io_req = (struct MPI2_RAID_SCSI_IO_REQUEST *)
3022                                                 cmd_fusion->io_request;
3023
3024                 scmd_local = cmd_fusion->scmd;
3025                 status = scsi_io_req->RaidContext.raid_context.status;
3026                 extStatus = scsi_io_req->RaidContext.raid_context.ex_status;
3027                 sense = cmd_fusion->sense;
3028                 data_length = scsi_io_req->DataLength;
3029
3030                 switch (scsi_io_req->Function) {
3031                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
3032                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
3033                                                 cmd_fusion->io_request;
3034                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
3035                                                 &mr_tm_req->TmRequest;
3036                         dev_dbg(&instance->pdev->dev, "TM completion:"
3037                                 "type: 0x%x TaskMID: 0x%x\n",
3038                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
3039                         complete(&cmd_fusion->done);
3040                         break;
3041                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
3042                         /* Update load balancing info */
3043                         if (fusion->load_balance_info &&
3044                             (cmd_fusion->scmd->SCp.Status &
3045                             MEGASAS_LOAD_BALANCE_FLAG)) {
3046                                 device_id = MEGASAS_DEV_INDEX(scmd_local);
3047                                 lbinfo = &fusion->load_balance_info[device_id];
3048                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
3049                                 cmd_fusion->scmd->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
3050                         }
3051                         //Fall thru and complete IO
3052                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
3053                         atomic_dec(&instance->fw_outstanding);
3054                         if (cmd_fusion->r1_alt_dev_handle == MR_DEVHANDLE_INVALID) {
3055                                 map_cmd_status(fusion, scmd_local, status,
3056                                                extStatus, le32_to_cpu(data_length),
3057                                                sense);
3058                                 if (instance->ldio_threshold &&
3059                                     (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO))
3060                                         atomic_dec(&instance->ldio_outstanding);
3061                                 scmd_local->SCp.ptr = NULL;
3062                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3063                                 scsi_dma_unmap(scmd_local);
3064                                 scmd_local->scsi_done(scmd_local);
3065                         } else  /* Optimal VD - R1 FP command completion. */
3066                                 megasas_complete_r1_command(instance, cmd_fusion);
3067                         break;
3068                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
3069                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3070                         /* Poll mode. Dummy free.
3071                          * In case of Interrupt mode, caller has reverse check.
3072                          */
3073                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
3074                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
3075                                 megasas_return_cmd(instance, cmd_mfi);
3076                         } else
3077                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
3078                         break;
3079                 }
3080
3081                 fusion->last_reply_idx[MSIxIndex]++;
3082                 if (fusion->last_reply_idx[MSIxIndex] >=
3083                     fusion->reply_q_depth)
3084                         fusion->last_reply_idx[MSIxIndex] = 0;
3085
3086                 desc->Words = cpu_to_le64(ULLONG_MAX);
3087                 num_completed++;
3088                 threshold_reply_count++;
3089
3090                 /* Get the next reply descriptor */
3091                 if (!fusion->last_reply_idx[MSIxIndex])
3092                         desc = fusion->reply_frames_desc[MSIxIndex];
3093                 else
3094                         desc++;
3095
3096                 reply_desc =
3097                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
3098
3099                 d_val.word = desc->Words;
3100
3101                 reply_descript_type = reply_desc->ReplyFlags &
3102                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
3103
3104                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
3105                         break;
3106                 /*
3107                  * Write to reply post host index register after completing threshold
3108                  * number of reply counts and still there are more replies in reply queue
3109                  * pending to be completed
3110                  */
3111                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
3112                         if (instance->msix_combined)
3113                                 writel(((MSIxIndex & 0x7) << 24) |
3114                                         fusion->last_reply_idx[MSIxIndex],
3115                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3116                         else
3117                                 writel((MSIxIndex << 24) |
3118                                         fusion->last_reply_idx[MSIxIndex],
3119                                         instance->reply_post_host_index_addr[0]);
3120                         threshold_reply_count = 0;
3121                 }
3122         }
3123
3124         if (!num_completed)
3125                 return IRQ_NONE;
3126
3127         wmb();
3128         if (instance->msix_combined)
3129                 writel(((MSIxIndex & 0x7) << 24) |
3130                         fusion->last_reply_idx[MSIxIndex],
3131                         instance->reply_post_host_index_addr[MSIxIndex/8]);
3132         else
3133                 writel((MSIxIndex << 24) |
3134                         fusion->last_reply_idx[MSIxIndex],
3135                         instance->reply_post_host_index_addr[0]);
3136         megasas_check_and_restore_queue_depth(instance);
3137         return IRQ_HANDLED;
3138 }
3139
3140 /**
3141  * megasas_sync_irqs -  Synchronizes all IRQs owned by adapter
3142  * @instance:                   Adapter soft state
3143  */
3144 void megasas_sync_irqs(unsigned long instance_addr)
3145 {
3146         u32 count, i;
3147         struct megasas_instance *instance =
3148                 (struct megasas_instance *)instance_addr;
3149
3150         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3151
3152         for (i = 0; i < count; i++)
3153                 synchronize_irq(pci_irq_vector(instance->pdev, i));
3154 }
3155
3156 /**
3157  * megasas_complete_cmd_dpc_fusion -    Completes command
3158  * @instance:                   Adapter soft state
3159  *
3160  * Tasklet to complete cmds
3161  */
3162 void
3163 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
3164 {
3165         struct megasas_instance *instance =
3166                 (struct megasas_instance *)instance_addr;
3167         unsigned long flags;
3168         u32 count, MSIxIndex;
3169
3170         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3171
3172         /* If we have already declared adapter dead, donot complete cmds */
3173         spin_lock_irqsave(&instance->hba_lock, flags);
3174         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
3175                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3176                 return;
3177         }
3178         spin_unlock_irqrestore(&instance->hba_lock, flags);
3179
3180         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
3181                 complete_cmd_fusion(instance, MSIxIndex);
3182 }
3183
3184 /**
3185  * megasas_isr_fusion - isr entry point
3186  */
3187 irqreturn_t megasas_isr_fusion(int irq, void *devp)
3188 {
3189         struct megasas_irq_context *irq_context = devp;
3190         struct megasas_instance *instance = irq_context->instance;
3191         u32 mfiStatus, fw_state, dma_state;
3192
3193         if (instance->mask_interrupts)
3194                 return IRQ_NONE;
3195
3196         if (!instance->msix_vectors) {
3197                 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
3198                 if (!mfiStatus)
3199                         return IRQ_NONE;
3200         }
3201
3202         /* If we are resetting, bail */
3203         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
3204                 instance->instancet->clear_intr(instance->reg_set);
3205                 return IRQ_HANDLED;
3206         }
3207
3208         if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
3209                 instance->instancet->clear_intr(instance->reg_set);
3210                 /* If we didn't complete any commands, check for FW fault */
3211                 fw_state = instance->instancet->read_fw_status_reg(
3212                         instance->reg_set) & MFI_STATE_MASK;
3213                 dma_state = instance->instancet->read_fw_status_reg
3214                         (instance->reg_set) & MFI_STATE_DMADONE;
3215                 if (instance->crash_dump_drv_support &&
3216                         instance->crash_dump_app_support) {
3217                         /* Start collecting crash, if DMA bit is done */
3218                         if ((fw_state == MFI_STATE_FAULT) && dma_state)
3219                                 schedule_work(&instance->crash_init);
3220                         else if (fw_state == MFI_STATE_FAULT) {
3221                                 if (instance->unload == 0)
3222                                         schedule_work(&instance->work_init);
3223                         }
3224                 } else if (fw_state == MFI_STATE_FAULT) {
3225                         dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt"
3226                                "for scsi%d\n", instance->host->host_no);
3227                         if (instance->unload == 0)
3228                                 schedule_work(&instance->work_init);
3229                 }
3230         }
3231
3232         return IRQ_HANDLED;
3233 }
3234
3235 /**
3236  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
3237  * @instance:                   Adapter soft state
3238  * mfi_cmd:                     megasas_cmd pointer
3239  *
3240  */
3241 void
3242 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
3243                         struct megasas_cmd *mfi_cmd)
3244 {
3245         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
3246         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
3247         struct megasas_cmd_fusion *cmd;
3248         struct fusion_context *fusion;
3249         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
3250
3251         fusion = instance->ctrl_context;
3252
3253         cmd = megasas_get_cmd_fusion(instance,
3254                         instance->max_scsi_cmds + mfi_cmd->index);
3255
3256         /*  Save the smid. To be used for returning the cmd */
3257         mfi_cmd->context.smid = cmd->index;
3258
3259         /*
3260          * For cmds where the flag is set, store the flag and check
3261          * on completion. For cmds with this flag, don't call
3262          * megasas_complete_cmd
3263          */
3264
3265         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
3266                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
3267
3268         io_req = cmd->io_request;
3269
3270         if (fusion->adapter_type >= INVADER_SERIES) {
3271                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
3272                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
3273                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
3274                 sgl_ptr_end->Flags = 0;
3275         }
3276
3277         mpi25_ieee_chain =
3278           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
3279
3280         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
3281         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
3282                                        SGL) / 4;
3283         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
3284
3285         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
3286
3287         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
3288                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
3289
3290         mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz);
3291 }
3292
3293 /**
3294  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
3295  * @instance:                   Adapter soft state
3296  * @cmd:                        mfi cmd to build
3297  *
3298  */
3299 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
3300 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
3301 {
3302         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc = NULL;
3303         u16 index;
3304
3305         build_mpt_mfi_pass_thru(instance, cmd);
3306         index = cmd->context.smid;
3307
3308         req_desc = megasas_get_request_descriptor(instance, index - 1);
3309
3310         req_desc->Words = 0;
3311         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
3312                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3313
3314         req_desc->SCSIIO.SMID = cpu_to_le16(index);
3315
3316         return req_desc;
3317 }
3318
3319 /**
3320  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
3321  * @instance:                   Adapter soft state
3322  * @cmd:                        mfi cmd pointer
3323  *
3324  */
3325 void
3326 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
3327                           struct megasas_cmd *cmd)
3328 {
3329         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3330
3331         req_desc = build_mpt_cmd(instance, cmd);
3332
3333         megasas_fire_cmd_fusion(instance, req_desc);
3334         return;
3335 }
3336
3337 /**
3338  * megasas_release_fusion -     Reverses the FW initialization
3339  * @instance:                   Adapter soft state
3340  */
3341 void
3342 megasas_release_fusion(struct megasas_instance *instance)
3343 {
3344         megasas_free_cmds(instance);
3345         megasas_free_cmds_fusion(instance);
3346
3347         iounmap(instance->reg_set);
3348
3349         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
3350 }
3351
3352 /**
3353  * megasas_read_fw_status_reg_fusion - returns the current FW status value
3354  * @regs:                       MFI register set
3355  */
3356 static u32
3357 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
3358 {
3359         return readl(&(regs)->outbound_scratch_pad);
3360 }
3361
3362 /**
3363  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
3364  * @instance:                           Controller's soft instance
3365  * return:                              Number of allocated host crash buffers
3366  */
3367 static void
3368 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
3369 {
3370         unsigned int i;
3371
3372         instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE);
3373         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
3374                 instance->crash_buf[i] = (void  *)__get_free_pages(GFP_KERNEL,
3375                                 instance->crash_buf_pages);
3376                 if (!instance->crash_buf[i]) {
3377                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3378                                 "memory allocation failed at index %d\n", i);
3379                         break;
3380                 }
3381                 memset(instance->crash_buf[i], 0,
3382                         ((1 << PAGE_SHIFT) << instance->crash_buf_pages));
3383         }
3384         instance->drv_buf_alloc = i;
3385 }
3386
3387 /**
3388  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
3389  * @instance:                           Controller's soft instance
3390  */
3391 void
3392 megasas_free_host_crash_buffer(struct megasas_instance *instance)
3393 {
3394         unsigned int i
3395 ;
3396         for (i = 0; i < instance->drv_buf_alloc; i++) {
3397                 if (instance->crash_buf[i])
3398                         free_pages((ulong)instance->crash_buf[i],
3399                                         instance->crash_buf_pages);
3400         }
3401         instance->drv_buf_index = 0;
3402         instance->drv_buf_alloc = 0;
3403         instance->fw_crash_state = UNAVAILABLE;
3404         instance->fw_crash_buffer_size = 0;
3405 }
3406
3407 /**
3408  * megasas_adp_reset_fusion -   For controller reset
3409  * @regs:                               MFI register set
3410  */
3411 static int
3412 megasas_adp_reset_fusion(struct megasas_instance *instance,
3413                          struct megasas_register_set __iomem *regs)
3414 {
3415         u32 host_diag, abs_state, retry;
3416
3417         /* Now try to reset the chip */
3418         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3419         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3420         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3421         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3422         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3423         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3424         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
3425
3426         /* Check that the diag write enable (DRWE) bit is on */
3427         host_diag = readl(&instance->reg_set->fusion_host_diag);
3428         retry = 0;
3429         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
3430                 msleep(100);
3431                 host_diag = readl(&instance->reg_set->fusion_host_diag);
3432                 if (retry++ == 100) {
3433                         dev_warn(&instance->pdev->dev,
3434                                 "Host diag unlock failed from %s %d\n",
3435                                 __func__, __LINE__);
3436                         break;
3437                 }
3438         }
3439         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
3440                 return -1;
3441
3442         /* Send chip reset command */
3443         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
3444                 &instance->reg_set->fusion_host_diag);
3445         msleep(3000);
3446
3447         /* Make sure reset adapter bit is cleared */
3448         host_diag = readl(&instance->reg_set->fusion_host_diag);
3449         retry = 0;
3450         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
3451                 msleep(100);
3452                 host_diag = readl(&instance->reg_set->fusion_host_diag);
3453                 if (retry++ == 1000) {
3454                         dev_warn(&instance->pdev->dev,
3455                                 "Diag reset adapter never cleared %s %d\n",
3456                                 __func__, __LINE__);
3457                         break;
3458                 }
3459         }
3460         if (host_diag & HOST_DIAG_RESET_ADAPTER)
3461                 return -1;
3462
3463         abs_state = instance->instancet->read_fw_status_reg(instance->reg_set)
3464                         & MFI_STATE_MASK;
3465         retry = 0;
3466
3467         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
3468                 msleep(100);
3469                 abs_state = instance->instancet->
3470                         read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
3471         }
3472         if (abs_state <= MFI_STATE_FW_INIT) {
3473                 dev_warn(&instance->pdev->dev,
3474                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
3475                         abs_state, __func__, __LINE__);
3476                 return -1;
3477         }
3478
3479         return 0;
3480 }
3481
3482 /**
3483  * megasas_check_reset_fusion - For controller reset check
3484  * @regs:                               MFI register set
3485  */
3486 static int
3487 megasas_check_reset_fusion(struct megasas_instance *instance,
3488                            struct megasas_register_set __iomem *regs)
3489 {
3490         return 0;
3491 }
3492
3493 /* This function waits for outstanding commands on fusion to complete */
3494 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
3495                                         int reason, int *convert)
3496 {
3497         int i, outstanding, retval = 0, hb_seconds_missed = 0;
3498         u32 fw_state;
3499
3500         for (i = 0; i < resetwaittime; i++) {
3501                 /* Check if firmware is in fault state */
3502                 fw_state = instance->instancet->read_fw_status_reg(
3503                         instance->reg_set) & MFI_STATE_MASK;
3504                 if (fw_state == MFI_STATE_FAULT) {
3505                         dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
3506                                " will reset adapter scsi%d.\n",
3507                                 instance->host->host_no);
3508                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3509                         if (instance->requestorId && reason) {
3510                                 dev_warn(&instance->pdev->dev, "SR-IOV Found FW in FAULT"
3511                                 " state while polling during"
3512                                 " I/O timeout handling for %d\n",
3513                                 instance->host->host_no);
3514                                 *convert = 1;
3515                         }
3516
3517                         retval = 1;
3518                         goto out;
3519                 }
3520
3521                 if (reason == MFI_IO_TIMEOUT_OCR) {
3522                         dev_info(&instance->pdev->dev,
3523                                 "MFI IO is timed out, initiating OCR\n");
3524                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
3525                         retval = 1;
3526                         goto out;
3527                 }
3528
3529                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
3530                 if (instance->requestorId && !reason) {
3531                         retval = 1;
3532                         goto out;
3533                 }
3534
3535                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
3536                 if (instance->requestorId && (reason == SCSIIO_TIMEOUT_OCR)) {
3537                         if (instance->hb_host_mem->HB.fwCounter !=
3538                             instance->hb_host_mem->HB.driverCounter) {
3539                                 instance->hb_host_mem->HB.driverCounter =
3540                                         instance->hb_host_mem->HB.fwCounter;
3541                                 hb_seconds_missed = 0;
3542                         } else {
3543                                 hb_seconds_missed++;
3544                                 if (hb_seconds_missed ==
3545                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
3546                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
3547                                                " Heartbeat never completed "
3548                                                " while polling during I/O "
3549                                                " timeout handling for "
3550                                                "scsi%d.\n",
3551                                                instance->host->host_no);
3552                                                *convert = 1;
3553                                                retval = 1;
3554                                                goto out;
3555                                 }
3556                         }
3557                 }
3558
3559                 outstanding = atomic_read(&instance->fw_outstanding);
3560                 if (!outstanding)
3561                         goto out;
3562
3563                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
3564                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
3565                                "commands to complete for scsi%d\n", i,
3566                                outstanding, instance->host->host_no);
3567                         megasas_complete_cmd_dpc_fusion(
3568                                 (unsigned long)instance);
3569                 }
3570                 msleep(1000);
3571         }
3572
3573         if (atomic_read(&instance->fw_outstanding)) {
3574                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
3575                        "will reset adapter scsi%d.\n",
3576                        instance->host->host_no);
3577                 *convert = 1;
3578                 retval = 1;
3579         }
3580 out:
3581         return retval;
3582 }
3583
3584 void  megasas_reset_reply_desc(struct megasas_instance *instance)
3585 {
3586         int i, j, count;
3587         struct fusion_context *fusion;
3588         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
3589
3590         fusion = instance->ctrl_context;
3591         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
3592         for (i = 0 ; i < count ; i++) {
3593                 fusion->last_reply_idx[i] = 0;
3594                 reply_desc = fusion->reply_frames_desc[i];
3595                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
3596                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
3597         }
3598 }
3599
3600 /*
3601  * megasas_refire_mgmt_cmd :    Re-fire management commands
3602  * @instance:                           Controller's soft instance
3603 */
3604 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
3605 {
3606         int j;
3607         struct megasas_cmd_fusion *cmd_fusion;
3608         struct fusion_context *fusion;
3609         struct megasas_cmd *cmd_mfi;
3610         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3611         u16 smid;
3612         bool refire_cmd = 0;
3613
3614         fusion = instance->ctrl_context;
3615
3616         /* Re-fire management commands.
3617          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
3618          */
3619         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
3620                 cmd_fusion = fusion->cmd_list[j];
3621                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
3622                 smid = le16_to_cpu(cmd_mfi->context.smid);
3623
3624                 if (!smid)
3625                         continue;
3626                 req_desc = megasas_get_request_descriptor
3627                                         (instance, smid - 1);
3628                 refire_cmd = req_desc && ((cmd_mfi->frame->dcmd.opcode !=
3629                                 cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) &&
3630                                  (cmd_mfi->frame->dcmd.opcode !=
3631                                 cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO)))
3632                                 && !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
3633                 if (refire_cmd)
3634                         megasas_fire_cmd_fusion(instance, req_desc);
3635                 else
3636                         megasas_return_cmd(instance, cmd_mfi);
3637         }
3638 }
3639
3640 /*
3641  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
3642  * @instance: per adapter struct
3643  * @channel: the channel assigned by the OS
3644  * @id: the id assigned by the OS
3645  *
3646  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
3647  */
3648
3649 static int megasas_track_scsiio(struct megasas_instance *instance,
3650                 int id, int channel)
3651 {
3652         int i, found = 0;
3653         struct megasas_cmd_fusion *cmd_fusion;
3654         struct fusion_context *fusion;
3655         fusion = instance->ctrl_context;
3656
3657         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
3658                 cmd_fusion = fusion->cmd_list[i];
3659                 if (cmd_fusion->scmd &&
3660                         (cmd_fusion->scmd->device->id == id &&
3661                         cmd_fusion->scmd->device->channel == channel)) {
3662                         dev_info(&instance->pdev->dev,
3663                                 "SCSI commands pending to target"
3664                                 "channel %d id %d \tSMID: 0x%x\n",
3665                                 channel, id, cmd_fusion->index);
3666                         scsi_print_command(cmd_fusion->scmd);
3667                         found = 1;
3668                         break;
3669                 }
3670         }
3671
3672         return found ? FAILED : SUCCESS;
3673 }
3674
3675 /**
3676  * megasas_tm_response_code - translation of device response code
3677  * @ioc: per adapter object
3678  * @mpi_reply: MPI reply returned by firmware
3679  *
3680  * Return nothing.
3681  */
3682 static void
3683 megasas_tm_response_code(struct megasas_instance *instance,
3684                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
3685 {
3686         char *desc;
3687
3688         switch (mpi_reply->ResponseCode) {
3689         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
3690                 desc = "task management request completed";
3691                 break;
3692         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
3693                 desc = "invalid frame";
3694                 break;
3695         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
3696                 desc = "task management request not supported";
3697                 break;
3698         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
3699                 desc = "task management request failed";
3700                 break;
3701         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
3702                 desc = "task management request succeeded";
3703                 break;
3704         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
3705                 desc = "invalid lun";
3706                 break;
3707         case 0xA:
3708                 desc = "overlapped tag attempted";
3709                 break;
3710         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
3711                 desc = "task queued, however not sent to target";
3712                 break;
3713         default:
3714                 desc = "unknown";
3715                 break;
3716         }
3717         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
3718                 mpi_reply->ResponseCode, desc);
3719         dev_dbg(&instance->pdev->dev,
3720                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
3721                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
3722                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
3723                 mpi_reply->Function, mpi_reply->TaskType,
3724                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
3725 }
3726
3727 /**
3728  * megasas_issue_tm - main routine for sending tm requests
3729  * @instance: per adapter struct
3730  * @device_handle: device handle
3731  * @channel: the channel assigned by the OS
3732  * @id: the id assigned by the OS
3733  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
3734  * @smid_task: smid assigned to the task
3735  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
3736  * Context: user
3737  *
3738  * MegaRaid use MPT interface for Task Magement request.
3739  * A generic API for sending task management requests to firmware.
3740  *
3741  * Return SUCCESS or FAILED.
3742  */
3743 static int
3744 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
3745         uint channel, uint id, u16 smid_task, u8 type)
3746 {
3747         struct MR_TASK_MANAGE_REQUEST *mr_request;
3748         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
3749         unsigned long timeleft;
3750         struct megasas_cmd_fusion *cmd_fusion;
3751         struct megasas_cmd *cmd_mfi;
3752         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3753         struct fusion_context *fusion;
3754         struct megasas_cmd_fusion *scsi_lookup;
3755         int rc;
3756         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
3757
3758         fusion = instance->ctrl_context;
3759
3760         cmd_mfi = megasas_get_cmd(instance);
3761
3762         if (!cmd_mfi) {
3763                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
3764                         __func__, __LINE__);
3765                 return -ENOMEM;
3766         }
3767
3768         cmd_fusion = megasas_get_cmd_fusion(instance,
3769                         instance->max_scsi_cmds + cmd_mfi->index);
3770
3771         /*  Save the smid. To be used for returning the cmd */
3772         cmd_mfi->context.smid = cmd_fusion->index;
3773
3774         req_desc = megasas_get_request_descriptor(instance,
3775                         (cmd_fusion->index - 1));
3776
3777         cmd_fusion->request_desc = req_desc;
3778         req_desc->Words = 0;
3779
3780         scsi_lookup = fusion->cmd_list[smid_task - 1];
3781
3782         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
3783         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
3784         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
3785         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3786         mpi_request->DevHandle = cpu_to_le16(device_handle);
3787         mpi_request->TaskType = type;
3788         mpi_request->TaskMID = cpu_to_le16(smid_task);
3789         mpi_request->LUN[1] = 0;
3790
3791
3792         req_desc = cmd_fusion->request_desc;
3793         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
3794         req_desc->HighPriority.RequestFlags =
3795                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
3796                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3797         req_desc->HighPriority.MSIxIndex =  0;
3798         req_desc->HighPriority.LMID = 0;
3799         req_desc->HighPriority.Reserved1 = 0;
3800
3801         if (channel < MEGASAS_MAX_PD_CHANNELS)
3802                 mr_request->tmReqFlags.isTMForPD = 1;
3803         else
3804                 mr_request->tmReqFlags.isTMForLD = 1;
3805
3806         init_completion(&cmd_fusion->done);
3807         megasas_fire_cmd_fusion(instance, req_desc);
3808
3809         timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ);
3810
3811         if (!timeleft) {
3812                 dev_err(&instance->pdev->dev,
3813                         "task mgmt type 0x%x timed out\n", type);
3814                 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
3815                 mutex_unlock(&instance->reset_mutex);
3816                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
3817                 mutex_lock(&instance->reset_mutex);
3818                 return rc;
3819         }
3820
3821         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
3822         megasas_tm_response_code(instance, mpi_reply);
3823
3824         megasas_return_cmd(instance, cmd_mfi);
3825         rc = SUCCESS;
3826         switch (type) {
3827         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
3828                 if (scsi_lookup->scmd == NULL)
3829                         break;
3830                 else {
3831                         instance->instancet->disable_intr(instance);
3832                         megasas_sync_irqs((unsigned long)instance);
3833                         megasas_complete_cmd_dpc_fusion
3834                                         ((unsigned long)instance);
3835                         instance->instancet->enable_intr(instance);
3836                         if (scsi_lookup->scmd == NULL)
3837                                 break;
3838                 }
3839                 rc = FAILED;
3840                 break;
3841
3842         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
3843                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
3844                         break;
3845                 instance->instancet->disable_intr(instance);
3846                 msleep(1000);
3847                 megasas_complete_cmd_dpc_fusion
3848                                 ((unsigned long)instance);
3849                 rc = megasas_track_scsiio(instance, id, channel);
3850                 instance->instancet->enable_intr(instance);
3851
3852                 break;
3853         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
3854         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
3855                 break;
3856         default:
3857                 rc = FAILED;
3858                 break;
3859         }
3860
3861         return rc;
3862
3863 }
3864
3865 /*
3866  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
3867  * @instance: per adapter struct
3868  *
3869  * Return Non Zero index, if SMID found in outstanding commands
3870  */
3871 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
3872 {
3873         int i, ret = 0;
3874         struct megasas_instance *instance;
3875         struct megasas_cmd_fusion *cmd_fusion;
3876         struct fusion_context *fusion;
3877
3878         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3879
3880         fusion = instance->ctrl_context;
3881
3882         for (i = 0; i < instance->max_scsi_cmds; i++) {
3883                 cmd_fusion = fusion->cmd_list[i];
3884                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
3885                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
3886                                 " SMID: %d\n", cmd_fusion->index);
3887                         ret = cmd_fusion->index;
3888                         break;
3889                 }
3890         }
3891
3892         return ret;
3893 }
3894
3895 /*
3896 * megasas_get_tm_devhandle - Get devhandle for TM request
3897 * @sdev-                     OS provided scsi device
3898 *
3899 * Returns-                   devhandle/targetID of SCSI device
3900 */
3901 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
3902 {
3903         u16 pd_index = 0;
3904         u32 device_id;
3905         struct megasas_instance *instance;
3906         struct fusion_context *fusion;
3907         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3908         u16 devhandle = (u16)ULONG_MAX;
3909
3910         instance = (struct megasas_instance *)sdev->host->hostdata;
3911         fusion = instance->ctrl_context;
3912
3913         if (!MEGASAS_IS_LOGICAL(sdev)) {
3914                 if (instance->use_seqnum_jbod_fp) {
3915                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL)
3916                                     + sdev->id;
3917                         pd_sync = (void *)fusion->pd_seq_sync
3918                                         [(instance->pd_seq_map_id - 1) & 1];
3919                         devhandle = pd_sync->seq[pd_index].devHandle;
3920                 } else
3921                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
3922                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
3923         } else {
3924                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
3925                                 + sdev->id;
3926                 devhandle = device_id;
3927         }
3928
3929         return devhandle;
3930 }
3931
3932 /*
3933  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
3934  * @scmd : pointer to scsi command object
3935  *
3936  * Return SUCCESS, if command aborted else FAILED
3937  */
3938
3939 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
3940 {
3941         struct megasas_instance *instance;
3942         u16 smid, devhandle;
3943         struct fusion_context *fusion;
3944         int ret;
3945         struct MR_PRIV_DEVICE *mr_device_priv_data;
3946         mr_device_priv_data = scmd->device->hostdata;
3947
3948
3949         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3950         fusion = instance->ctrl_context;
3951
3952         scmd_printk(KERN_INFO, scmd, "task abort called for scmd(%p)\n", scmd);
3953         scsi_print_command(scmd);
3954
3955         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
3956                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
3957                 "SCSI host:%d\n", instance->host->host_no);
3958                 ret = FAILED;
3959                 return ret;
3960         }
3961
3962         if (!mr_device_priv_data) {
3963                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
3964                         "scmd(%p)\n", scmd);
3965                 scmd->result = DID_NO_CONNECT << 16;
3966                 ret = SUCCESS;
3967                 goto out;
3968         }
3969
3970
3971         if (!mr_device_priv_data->is_tm_capable) {
3972                 ret = FAILED;
3973                 goto out;
3974         }
3975
3976         mutex_lock(&instance->reset_mutex);
3977
3978         smid = megasas_fusion_smid_lookup(scmd);
3979
3980         if (!smid) {
3981                 ret = SUCCESS;
3982                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
3983                         " issued is not found in oustanding commands\n");
3984                 mutex_unlock(&instance->reset_mutex);
3985                 goto out;
3986         }
3987
3988         devhandle = megasas_get_tm_devhandle(scmd->device);
3989
3990         if (devhandle == (u16)ULONG_MAX) {
3991                 ret = SUCCESS;
3992                 sdev_printk(KERN_INFO, scmd->device,
3993                         "task abort issued for invalid devhandle\n");
3994                 mutex_unlock(&instance->reset_mutex);
3995                 goto out;
3996         }
3997         sdev_printk(KERN_INFO, scmd->device,
3998                 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
3999                 scmd, devhandle);
4000
4001         mr_device_priv_data->tm_busy = 1;
4002         ret = megasas_issue_tm(instance, devhandle,
4003                         scmd->device->channel, scmd->device->id, smid,
4004                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK);
4005         mr_device_priv_data->tm_busy = 0;
4006
4007         mutex_unlock(&instance->reset_mutex);
4008 out:
4009         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
4010                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
4011
4012         return ret;
4013 }
4014
4015 /*
4016  * megasas_reset_target_fusion : target reset function for fusion adapters
4017  * scmd: SCSI command pointer
4018  *
4019  * Returns SUCCESS if all commands associated with target aborted else FAILED
4020  */
4021
4022 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
4023 {
4024
4025         struct megasas_instance *instance;
4026         int ret = FAILED;
4027         u16 devhandle;
4028         struct fusion_context *fusion;
4029         struct MR_PRIV_DEVICE *mr_device_priv_data;
4030         mr_device_priv_data = scmd->device->hostdata;
4031
4032         instance = (struct megasas_instance *)scmd->device->host->hostdata;
4033         fusion = instance->ctrl_context;
4034
4035         sdev_printk(KERN_INFO, scmd->device,
4036                     "target reset called for scmd(%p)\n", scmd);
4037
4038         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
4039                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
4040                 "SCSI host:%d\n", instance->host->host_no);
4041                 ret = FAILED;
4042                 return ret;
4043         }
4044
4045         if (!mr_device_priv_data) {
4046                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
4047                         "scmd(%p)\n", scmd);
4048                 scmd->result = DID_NO_CONNECT << 16;
4049                 ret = SUCCESS;
4050                 goto out;
4051         }
4052
4053
4054         if (!mr_device_priv_data->is_tm_capable) {
4055                 ret = FAILED;
4056                 goto out;
4057         }
4058
4059         mutex_lock(&instance->reset_mutex);
4060         devhandle = megasas_get_tm_devhandle(scmd->device);
4061
4062         if (devhandle == (u16)ULONG_MAX) {
4063                 ret = SUCCESS;
4064                 sdev_printk(KERN_INFO, scmd->device,
4065                         "target reset issued for invalid devhandle\n");
4066                 mutex_unlock(&instance->reset_mutex);
4067                 goto out;
4068         }
4069
4070         sdev_printk(KERN_INFO, scmd->device,
4071                 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
4072                 scmd, devhandle);
4073         mr_device_priv_data->tm_busy = 1;
4074         ret = megasas_issue_tm(instance, devhandle,
4075                         scmd->device->channel, scmd->device->id, 0,
4076                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET);
4077         mr_device_priv_data->tm_busy = 0;
4078         mutex_unlock(&instance->reset_mutex);
4079 out:
4080         scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
4081                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
4082
4083         return ret;
4084 }
4085
4086 /*SRIOV get other instance in cluster if any*/
4087 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
4088 {
4089         int i;
4090
4091         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
4092                 if (megasas_mgmt_info.instance[i] &&
4093                         (megasas_mgmt_info.instance[i] != instance) &&
4094                          megasas_mgmt_info.instance[i]->requestorId &&
4095                          megasas_mgmt_info.instance[i]->peerIsPresent &&
4096                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
4097                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
4098                         return megasas_mgmt_info.instance[i];
4099         }
4100         return NULL;
4101 }
4102
4103 /* Check for a second path that is currently UP */
4104 int megasas_check_mpio_paths(struct megasas_instance *instance,
4105         struct scsi_cmnd *scmd)
4106 {
4107         struct megasas_instance *peer_instance = NULL;
4108         int retval = (DID_REQUEUE << 16);
4109
4110         if (instance->peerIsPresent) {
4111                 peer_instance = megasas_get_peer_instance(instance);
4112                 if ((peer_instance) &&
4113                         (atomic_read(&peer_instance->adprecovery) ==
4114                         MEGASAS_HBA_OPERATIONAL))
4115                         retval = (DID_NO_CONNECT << 16);
4116         }
4117         return retval;
4118 }
4119
4120 /* Core fusion reset function */
4121 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
4122 {
4123         int retval = SUCCESS, i, j, convert = 0;
4124         struct megasas_instance *instance;
4125         struct megasas_cmd_fusion *cmd_fusion, *r1_cmd;
4126         struct fusion_context *fusion;
4127         u32 abs_state, status_reg, reset_adapter;
4128         u32 io_timeout_in_crash_mode = 0;
4129         struct scsi_cmnd *scmd_local = NULL;
4130         struct scsi_device *sdev;
4131
4132         instance = (struct megasas_instance *)shost->hostdata;
4133         fusion = instance->ctrl_context;
4134
4135         mutex_lock(&instance->reset_mutex);
4136
4137         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
4138                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
4139                        "returning FAILED for scsi%d.\n",
4140                         instance->host->host_no);
4141                 mutex_unlock(&instance->reset_mutex);
4142                 return FAILED;
4143         }
4144         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
4145         abs_state = status_reg & MFI_STATE_MASK;
4146
4147         /* IO timeout detected, forcibly put FW in FAULT state */
4148         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
4149                 instance->crash_dump_app_support && reason) {
4150                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
4151                         "forcibly FAULT Firmware\n");
4152                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4153                 status_reg = readl(&instance->reg_set->doorbell);
4154                 writel(status_reg | MFI_STATE_FORCE_OCR,
4155                         &instance->reg_set->doorbell);
4156                 readl(&instance->reg_set->doorbell);
4157                 mutex_unlock(&instance->reset_mutex);
4158                 do {
4159                         ssleep(3);
4160                         io_timeout_in_crash_mode++;
4161                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
4162                                 "seconds for crash dump collection and OCR "
4163                                 "to be done\n", (io_timeout_in_crash_mode * 3));
4164                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
4165                         (io_timeout_in_crash_mode < 80));
4166
4167                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
4168                         dev_info(&instance->pdev->dev, "OCR done for IO "
4169                                 "timeout case\n");
4170                         retval = SUCCESS;
4171                 } else {
4172                         dev_info(&instance->pdev->dev, "Controller is not "
4173                                 "operational after 240 seconds wait for IO "
4174                                 "timeout case in FW crash dump mode\n do "
4175                                 "OCR/kill adapter\n");
4176                         retval = megasas_reset_fusion(shost, 0);
4177                 }
4178                 return retval;
4179         }
4180
4181         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
4182                 del_timer_sync(&instance->sriov_heartbeat_timer);
4183         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4184         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
4185         instance->instancet->disable_intr(instance);
4186         megasas_sync_irqs((unsigned long)instance);
4187
4188         /* First try waiting for commands to complete */
4189         if (megasas_wait_for_outstanding_fusion(instance, reason,
4190                                                 &convert)) {
4191                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4192                 dev_warn(&instance->pdev->dev, "resetting fusion "
4193                        "adapter scsi%d.\n", instance->host->host_no);
4194                 if (convert)
4195                         reason = 0;
4196
4197                 if (megasas_dbg_lvl & OCR_LOGS)
4198                         dev_info(&instance->pdev->dev, "\nPending SCSI commands:\n");
4199
4200                 /* Now return commands back to the OS */
4201                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
4202                         cmd_fusion = fusion->cmd_list[i];
4203                         /*check for extra commands issued by driver*/
4204                         if (instance->is_ventura) {
4205                                 r1_cmd = fusion->cmd_list[i + instance->max_fw_cmds];
4206                                 megasas_return_cmd_fusion(instance, r1_cmd);
4207                         }
4208                         scmd_local = cmd_fusion->scmd;
4209                         if (cmd_fusion->scmd) {
4210                                 if (megasas_dbg_lvl & OCR_LOGS) {
4211                                         sdev_printk(KERN_INFO,
4212                                                 cmd_fusion->scmd->device, "SMID: 0x%x\n",
4213                                                 cmd_fusion->index);
4214                                         scsi_print_command(cmd_fusion->scmd);
4215                                 }
4216
4217                                 scmd_local->result =
4218                                         megasas_check_mpio_paths(instance,
4219                                                         scmd_local);
4220                                 if (instance->ldio_threshold &&
4221                                         megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
4222                                         atomic_dec(&instance->ldio_outstanding);
4223                                 megasas_return_cmd_fusion(instance, cmd_fusion);
4224                                 scsi_dma_unmap(scmd_local);
4225                                 scmd_local->scsi_done(scmd_local);
4226                         }
4227                 }
4228
4229                 atomic_set(&instance->fw_outstanding, 0);
4230
4231                 status_reg = instance->instancet->read_fw_status_reg(
4232                         instance->reg_set);
4233                 abs_state = status_reg & MFI_STATE_MASK;
4234                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
4235                 if (instance->disableOnlineCtrlReset ||
4236                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
4237                         /* Reset not supported, kill adapter */
4238                         dev_warn(&instance->pdev->dev, "Reset not supported"
4239                                ", killing adapter scsi%d.\n",
4240                                 instance->host->host_no);
4241                         megaraid_sas_kill_hba(instance);
4242                         instance->skip_heartbeat_timer_del = 1;
4243                         retval = FAILED;
4244                         goto out;
4245                 }
4246
4247                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
4248                 if (instance->requestorId && !reason) {
4249                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
4250                         goto transition_to_ready;
4251                 }
4252
4253                 /* Now try to reset the chip */
4254                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
4255
4256                         if (instance->instancet->adp_reset
4257                                 (instance, instance->reg_set))
4258                                 continue;
4259 transition_to_ready:
4260                         /* Wait for FW to become ready */
4261                         if (megasas_transition_to_ready(instance, 1)) {
4262                                 dev_warn(&instance->pdev->dev,
4263                                         "Failed to transition controller to ready for "
4264                                         "scsi%d.\n", instance->host->host_no);
4265                                 if (instance->requestorId && !reason)
4266                                         goto fail_kill_adapter;
4267                                 else
4268                                         continue;
4269                         }
4270                         megasas_reset_reply_desc(instance);
4271                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
4272
4273                         if (megasas_ioc_init_fusion(instance)) {
4274                                 dev_warn(&instance->pdev->dev,
4275                                        "megasas_ioc_init_fusion() failed! for "
4276                                        "scsi%d\n", instance->host->host_no);
4277                                 if (instance->requestorId && !reason)
4278                                         goto fail_kill_adapter;
4279                                 else
4280                                         continue;
4281                         }
4282
4283                         megasas_refire_mgmt_cmd(instance);
4284
4285                         if (megasas_get_ctrl_info(instance)) {
4286                                 dev_info(&instance->pdev->dev,
4287                                         "Failed from %s %d\n",
4288                                         __func__, __LINE__);
4289                                 megaraid_sas_kill_hba(instance);
4290                                 retval = FAILED;
4291                                 goto out;
4292                         }
4293                         /* Reset load balance info */
4294                         if (fusion->load_balance_info)
4295                                 memset(fusion->load_balance_info, 0,
4296                                        (sizeof(struct LD_LOAD_BALANCE_INFO) *
4297                                        MAX_LOGICAL_DRIVES_EXT));
4298
4299                         if (!megasas_get_map_info(instance))
4300                                 megasas_sync_map_info(instance);
4301
4302                         megasas_setup_jbod_map(instance);
4303
4304                         shost_for_each_device(sdev, shost)
4305                                 megasas_set_dynamic_target_properties(sdev);
4306
4307                         /* reset stream detection array */
4308                         if (instance->is_ventura) {
4309                                 for (j = 0; j < MAX_LOGICAL_DRIVES_EXT; ++j) {
4310                                         memset(fusion->stream_detect_by_ld[j],
4311                                         0, sizeof(struct LD_STREAM_DETECT));
4312                                  fusion->stream_detect_by_ld[j]->mru_bit_map
4313                                                 = MR_STREAM_BITMAP;
4314                                 }
4315                         }
4316
4317                         clear_bit(MEGASAS_FUSION_IN_RESET,
4318                                   &instance->reset_flags);
4319                         instance->instancet->enable_intr(instance);
4320                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4321
4322                         /* Restart SR-IOV heartbeat */
4323                         if (instance->requestorId) {
4324                                 if (!megasas_sriov_start_heartbeat(instance, 0))
4325                                         megasas_start_timer(instance,
4326                                                             &instance->sriov_heartbeat_timer,
4327                                                             megasas_sriov_heartbeat_handler,
4328                                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4329                                 else
4330                                         instance->skip_heartbeat_timer_del = 1;
4331                         }
4332
4333                         /* Adapter reset completed successfully */
4334                         dev_warn(&instance->pdev->dev, "Reset "
4335                                "successful for scsi%d.\n",
4336                                 instance->host->host_no);
4337
4338                         if (instance->crash_dump_drv_support &&
4339                                 instance->crash_dump_app_support)
4340                                 megasas_set_crash_dump_params(instance,
4341                                         MR_CRASH_BUF_TURN_ON);
4342                         else
4343                                 megasas_set_crash_dump_params(instance,
4344                                         MR_CRASH_BUF_TURN_OFF);
4345
4346                         retval = SUCCESS;
4347                         goto out;
4348                 }
4349 fail_kill_adapter:
4350                 /* Reset failed, kill the adapter */
4351                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
4352                        "adapter scsi%d.\n", instance->host->host_no);
4353                 megaraid_sas_kill_hba(instance);
4354                 instance->skip_heartbeat_timer_del = 1;
4355                 retval = FAILED;
4356         } else {
4357                 /* For VF: Restart HB timer if we didn't OCR */
4358                 if (instance->requestorId) {
4359                         megasas_start_timer(instance,
4360                                             &instance->sriov_heartbeat_timer,
4361                                             megasas_sriov_heartbeat_handler,
4362                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4363                 }
4364                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4365                 instance->instancet->enable_intr(instance);
4366                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4367         }
4368 out:
4369         clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
4370         mutex_unlock(&instance->reset_mutex);
4371         return retval;
4372 }
4373
4374 /* Fusion Crash dump collection work queue */
4375 void  megasas_fusion_crash_dump_wq(struct work_struct *work)
4376 {
4377         struct megasas_instance *instance =
4378                 container_of(work, struct megasas_instance, crash_init);
4379         u32 status_reg;
4380         u8 partial_copy = 0;
4381
4382
4383         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
4384
4385         /*
4386          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
4387          * to host crash buffers
4388          */
4389         if (instance->drv_buf_index == 0) {
4390                 /* Buffer is already allocated for old Crash dump.
4391                  * Do OCR and do not wait for crash dump collection
4392                  */
4393                 if (instance->drv_buf_alloc) {
4394                         dev_info(&instance->pdev->dev, "earlier crash dump is "
4395                                 "not yet copied by application, ignoring this "
4396                                 "crash dump and initiating OCR\n");
4397                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4398                         writel(status_reg,
4399                                 &instance->reg_set->outbound_scratch_pad);
4400                         readl(&instance->reg_set->outbound_scratch_pad);
4401                         return;
4402                 }
4403                 megasas_alloc_host_crash_buffer(instance);
4404                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
4405                         "allocated: %d\n", instance->drv_buf_alloc);
4406         }
4407
4408         /*
4409          * Driver has allocated max buffers, which can be allocated
4410          * and FW has more crash dump data, then driver will
4411          * ignore the data.
4412          */
4413         if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
4414                 dev_info(&instance->pdev->dev, "Driver is done copying "
4415                         "the buffer: %d\n", instance->drv_buf_alloc);
4416                 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
4417                 partial_copy = 1;
4418         } else {
4419                 memcpy(instance->crash_buf[instance->drv_buf_index],
4420                         instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
4421                 instance->drv_buf_index++;
4422                 status_reg &= ~MFI_STATE_DMADONE;
4423         }
4424
4425         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
4426                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
4427                         "of copied buffers: %d\n", instance->drv_buf_index);
4428                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
4429                 instance->fw_crash_state = AVAILABLE;
4430                 instance->drv_buf_index = 0;
4431                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
4432                 readl(&instance->reg_set->outbound_scratch_pad);
4433                 if (!partial_copy)
4434                         megasas_reset_fusion(instance->host, 0);
4435         } else {
4436                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
4437                 readl(&instance->reg_set->outbound_scratch_pad);
4438         }
4439 }
4440
4441
4442 /* Fusion OCR work queue */
4443 void megasas_fusion_ocr_wq(struct work_struct *work)
4444 {
4445         struct megasas_instance *instance =
4446                 container_of(work, struct megasas_instance, work_init);
4447
4448         megasas_reset_fusion(instance->host, 0);
4449 }
4450
4451 /* Allocate fusion context */
4452 int
4453 megasas_alloc_fusion_context(struct megasas_instance *instance)
4454 {
4455         struct fusion_context *fusion;
4456
4457         instance->ctrl_context_pages = get_order(sizeof(struct fusion_context));
4458         instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4459                 instance->ctrl_context_pages);
4460         if (!instance->ctrl_context) {
4461                 /* fall back to using vmalloc for fusion_context */
4462                 instance->ctrl_context = vzalloc(sizeof(struct fusion_context));
4463                 if (!instance->ctrl_context) {
4464                         dev_err(&instance->pdev->dev, "Failed from %s %d\n", __func__, __LINE__);
4465                         return -ENOMEM;
4466                 }
4467         }
4468
4469         fusion = instance->ctrl_context;
4470
4471         fusion->load_balance_info_pages = get_order(MAX_LOGICAL_DRIVES_EXT *
4472                 sizeof(struct LD_LOAD_BALANCE_INFO));
4473         fusion->load_balance_info =
4474                 (struct LD_LOAD_BALANCE_INFO *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
4475                 fusion->load_balance_info_pages);
4476         if (!fusion->load_balance_info) {
4477                 fusion->load_balance_info = vzalloc(MAX_LOGICAL_DRIVES_EXT *
4478                         sizeof(struct LD_LOAD_BALANCE_INFO));
4479                 if (!fusion->load_balance_info)
4480                         dev_err(&instance->pdev->dev, "Failed to allocate load_balance_info, "
4481                                 "continuing without Load Balance support\n");
4482         }
4483
4484         return 0;
4485 }
4486
4487 void
4488 megasas_free_fusion_context(struct megasas_instance *instance)
4489 {
4490         struct fusion_context *fusion = instance->ctrl_context;
4491
4492         if (fusion) {
4493                 if (fusion->load_balance_info) {
4494                         if (is_vmalloc_addr(fusion->load_balance_info))
4495                                 vfree(fusion->load_balance_info);
4496                         else
4497                                 free_pages((ulong)fusion->load_balance_info,
4498                                         fusion->load_balance_info_pages);
4499                 }
4500
4501                 if (is_vmalloc_addr(fusion))
4502                         vfree(fusion);
4503                 else
4504                         free_pages((ulong)fusion,
4505                                 instance->ctrl_context_pages);
4506         }
4507 }
4508
4509 struct megasas_instance_template megasas_instance_template_fusion = {
4510         .enable_intr = megasas_enable_intr_fusion,
4511         .disable_intr = megasas_disable_intr_fusion,
4512         .clear_intr = megasas_clear_intr_fusion,
4513         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
4514         .adp_reset = megasas_adp_reset_fusion,
4515         .check_reset = megasas_check_reset_fusion,
4516         .service_isr = megasas_isr_fusion,
4517         .tasklet = megasas_complete_cmd_dpc_fusion,
4518         .init_adapter = megasas_init_adapter_fusion,
4519         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
4520         .issue_dcmd = megasas_issue_dcmd_fusion,
4521 };