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
  51 #include <scsi/scsi.h>
  52 #include <scsi/scsi_cmnd.h>
  53 #include <scsi/scsi_device.h>
  54 #include <scsi/scsi_host.h>
  55 #include <scsi/scsi_dbg.h>
  56
  57 #include "megaraid_sas_fusion.h"
  58 #include "megaraid_sas.h"
  59
  60 extern void megasas_free_cmds(struct megasas_instance *instance);
  61 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
  62                                            *instance);
  63 extern void
  64 megasas_complete_cmd(struct megasas_instance *instance,
  65                      struct megasas_cmd *cmd, u8 alt_status);
  66 int
  67 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
  68               int seconds);
  69
  70 void
  71 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
  72 int megasas_alloc_cmds(struct megasas_instance *instance);
  73 int
  74 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
  75 int
  76 megasas_issue_polled(struct megasas_instance *instance,
  77                      struct megasas_cmd *cmd);
  78 void
  79 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
  80
  81 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
  82 void megaraid_sas_kill_hba(struct megasas_instance *instance);
  83
  84 extern u32 megasas_dbg_lvl;
  85 void megasas_sriov_heartbeat_handler(unsigned long instance_addr);
  86 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
  87                                   int initial);
  88 void megasas_start_timer(struct megasas_instance *instance,
  89                         struct timer_list *timer,
  90                          void *fn, unsigned long interval);
  91 extern struct megasas_mgmt_info megasas_mgmt_info;
  92 extern int resetwaittime;
  93
  94
  95
  96 /**
  97  * megasas_enable_intr_fusion - Enables interrupts
  98  * @regs:                       MFI register set
  99  */
 100 void
 101 megasas_enable_intr_fusion(struct megasas_instance *instance)
 102 {
 103         struct megasas_register_set __iomem *regs;
 104         regs = instance->reg_set;
 105
 106         instance->mask_interrupts = 0;
 107         /* For Thunderbolt/Invader also clear intr on enable */
 108         writel(~0, &regs->outbound_intr_status);
 109         readl(&regs->outbound_intr_status);
 110
 111         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 112
 113         /* Dummy readl to force pci flush */
 114         readl(&regs->outbound_intr_mask);
 115 }
 116
 117 /**
 118  * megasas_disable_intr_fusion - Disables interrupt
 119  * @regs:                        MFI register set
 120  */
 121 void
 122 megasas_disable_intr_fusion(struct megasas_instance *instance)
 123 {
 124         u32 mask = 0xFFFFFFFF;
 125         u32 status;
 126         struct megasas_register_set __iomem *regs;
 127         regs = instance->reg_set;
 128         instance->mask_interrupts = 1;
 129
 130         writel(mask, &regs->outbound_intr_mask);
 131         /* Dummy readl to force pci flush */
 132         status = readl(&regs->outbound_intr_mask);
 133 }
 134
 135 int
 136 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
 137 {
 138         u32 status;
 139         /*
 140          * Check if it is our interrupt
 141          */
 142         status = readl(&regs->outbound_intr_status);
 143
 144         if (status & 1) {
 145                 writel(status, &regs->outbound_intr_status);
 146                 readl(&regs->outbound_intr_status);
 147                 return 1;
 148         }
 149         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 150                 return 0;
 151
 152         return 1;
 153 }
 154
 155 /**
 156  * megasas_get_cmd_fusion -     Get a command from the free pool
 157  * @instance:           Adapter soft state
 158  *
 159  * Returns a free command from the pool
 160  */
 161 struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 162                                                   *instance)
 163 {
 164         unsigned long flags;
 165         struct fusion_context *fusion =
 166                 (struct fusion_context *)instance->ctrl_context;
 167         struct megasas_cmd_fusion *cmd = NULL;
 168
 169         spin_lock_irqsave(&fusion->mpt_pool_lock, flags);
 170
 171         if (!list_empty(&fusion->cmd_pool)) {
 172                 cmd = list_entry((&fusion->cmd_pool)->next,
 173                                  struct megasas_cmd_fusion, list);
 174                 list_del_init(&cmd->list);
 175         } else {
 176                 printk(KERN_ERR "megasas: Command pool (fusion) empty!\n");
 177         }
 178
 179         spin_unlock_irqrestore(&fusion->mpt_pool_lock, flags);
 180         return cmd;
 181 }
 182
 183 /**
 184  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 185  * @instance:           Adapter soft state
 186  * @cmd:                Command packet to be returned to free command pool
 187  */
 188 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 189         struct megasas_cmd_fusion *cmd)
 190 {
 191         unsigned long flags;
 192         struct fusion_context *fusion =
 193                 (struct fusion_context *)instance->ctrl_context;
 194
 195         spin_lock_irqsave(&fusion->mpt_pool_lock, flags);
 196
 197         cmd->scmd = NULL;
 198         cmd->sync_cmd_idx = (u32)ULONG_MAX;
 199         memset(cmd->io_request, 0, sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 200         list_add(&cmd->list, (&fusion->cmd_pool)->next);
 201
 202         spin_unlock_irqrestore(&fusion->mpt_pool_lock, flags);
 203 }
 204
 205 /**
 206  * megasas_return_mfi_mpt_pthr - Return a mfi and mpt to free command pool
 207  * @instance:           Adapter soft state
 208  * @cmd_mfi:            MFI Command packet to be returned to free command pool
 209  * @cmd_mpt:            MPT Command packet to be returned to free command pool
 210  */
 211 inline void megasas_return_mfi_mpt_pthr(struct megasas_instance *instance,
 212                 struct megasas_cmd *cmd_mfi,
 213                 struct megasas_cmd_fusion *cmd_fusion)
 214 {
 215         unsigned long flags;
 216
 217         /*
 218          * TO DO: optimize this code and use only one lock instead of two
 219          * locks being used currently- mpt_pool_lock is acquired
 220          * inside mfi_pool_lock
 221          */
 222         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 223         megasas_return_cmd_fusion(instance, cmd_fusion);
 224         if (atomic_read(&cmd_mfi->mfi_mpt_pthr) != MFI_MPT_ATTACHED)
 225                 dev_err(&instance->pdev->dev, "Possible bug from %s %d\n",
 226                         __func__, __LINE__);
 227         atomic_set(&cmd_mfi->mfi_mpt_pthr, MFI_MPT_DETACHED);
 228         __megasas_return_cmd(instance, cmd_mfi);
 229         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 230 }
 231
 232 /**
 233  * megasas_teardown_frame_pool_fusion - Destroy the cmd frame DMA pool
 234  * @instance:                           Adapter soft state
 235  */
 236 static void megasas_teardown_frame_pool_fusion(
 237         struct megasas_instance *instance)
 238 {
 239         int i;
 240         struct fusion_context *fusion = instance->ctrl_context;
 241
 242         u16 max_cmd = instance->max_fw_cmds;
 243
 244         struct megasas_cmd_fusion *cmd;
 245
 246         if (!fusion->sg_dma_pool || !fusion->sense_dma_pool) {
 247                 printk(KERN_ERR "megasas: dma pool is null. SG Pool %p, "
 248                        "sense pool : %p\n", fusion->sg_dma_pool,
 249                        fusion->sense_dma_pool);
 250                 return;
 251         }
 252
 253         /*
 254          * Return all frames to pool
 255          */
 256         for (i = 0; i < max_cmd; i++) {
 257
 258                 cmd = fusion->cmd_list[i];
 259
 260                 if (cmd->sg_frame)
 261                         pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
 262                                       cmd->sg_frame_phys_addr);
 263
 264                 if (cmd->sense)
 265                         pci_pool_free(fusion->sense_dma_pool, cmd->sense,
 266                                       cmd->sense_phys_addr);
 267         }
 268
 269         /*
 270          * Now destroy the pool itself
 271          */
 272         pci_pool_destroy(fusion->sg_dma_pool);
 273         pci_pool_destroy(fusion->sense_dma_pool);
 274
 275         fusion->sg_dma_pool = NULL;
 276         fusion->sense_dma_pool = NULL;
 277 }
 278
 279 /**
 280  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
 281  * @instance:           Adapter soft state
 282  */
 283 void
 284 megasas_free_cmds_fusion(struct megasas_instance *instance)
 285 {
 286         int i;
 287         struct fusion_context *fusion = instance->ctrl_context;
 288
 289         u32 max_cmds, req_sz, reply_sz, io_frames_sz;
 290
 291
 292         req_sz = fusion->request_alloc_sz;
 293         reply_sz = fusion->reply_alloc_sz;
 294         io_frames_sz = fusion->io_frames_alloc_sz;
 295
 296         max_cmds = instance->max_fw_cmds;
 297
 298         /* Free descriptors and request Frames memory */
 299         if (fusion->req_frames_desc)
 300                 dma_free_coherent(&instance->pdev->dev, req_sz,
 301                                   fusion->req_frames_desc,
 302                                   fusion->req_frames_desc_phys);
 303
 304         if (fusion->reply_frames_desc) {
 305                 pci_pool_free(fusion->reply_frames_desc_pool,
 306                               fusion->reply_frames_desc,
 307                               fusion->reply_frames_desc_phys);
 308                 pci_pool_destroy(fusion->reply_frames_desc_pool);
 309         }
 310
 311         if (fusion->io_request_frames) {
 312                 pci_pool_free(fusion->io_request_frames_pool,
 313                               fusion->io_request_frames,
 314                               fusion->io_request_frames_phys);
 315                 pci_pool_destroy(fusion->io_request_frames_pool);
 316         }
 317
 318         /* Free the Fusion frame pool */
 319         megasas_teardown_frame_pool_fusion(instance);
 320
 321         /* Free all the commands in the cmd_list */
 322         for (i = 0; i < max_cmds; i++)
 323                 kfree(fusion->cmd_list[i]);
 324
 325         /* Free the cmd_list buffer itself */
 326         kfree(fusion->cmd_list);
 327         fusion->cmd_list = NULL;
 328
 329         INIT_LIST_HEAD(&fusion->cmd_pool);
 330 }
 331
 332 /**
 333  * megasas_create_frame_pool_fusion -   Creates DMA pool for cmd frames
 334  * @instance:                   Adapter soft state
 335  *
 336  */
 337 static int megasas_create_frame_pool_fusion(struct megasas_instance *instance)
 338 {
 339         int i;
 340         u32 max_cmd;
 341         struct fusion_context *fusion;
 342         struct megasas_cmd_fusion *cmd;
 343         u32 total_sz_chain_frame;
 344
 345         fusion = instance->ctrl_context;
 346         max_cmd = instance->max_fw_cmds;
 347
 348         total_sz_chain_frame = MEGASAS_MAX_SZ_CHAIN_FRAME;
 349
 350         /*
 351          * Use DMA pool facility provided by PCI layer
 352          */
 353
 354         fusion->sg_dma_pool = pci_pool_create("megasas sg pool fusion",
 355                                               instance->pdev,
 356                                               total_sz_chain_frame, 4,
 357                                               0);
 358         if (!fusion->sg_dma_pool) {
 359                 printk(KERN_DEBUG "megasas: failed to setup request pool "
 360                        "fusion\n");
 361                 return -ENOMEM;
 362         }
 363         fusion->sense_dma_pool = pci_pool_create("megasas sense pool fusion",
 364                                                  instance->pdev,
 365                                                  SCSI_SENSE_BUFFERSIZE, 64, 0);
 366
 367         if (!fusion->sense_dma_pool) {
 368                 printk(KERN_DEBUG "megasas: failed to setup sense pool "
 369                        "fusion\n");
 370                 pci_pool_destroy(fusion->sg_dma_pool);
 371                 fusion->sg_dma_pool = NULL;
 372                 return -ENOMEM;
 373         }
 374
 375         /*
 376          * Allocate and attach a frame to each of the commands in cmd_list
 377          */
 378         for (i = 0; i < max_cmd; i++) {
 379
 380                 cmd = fusion->cmd_list[i];
 381
 382                 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
 383                                                GFP_KERNEL,
 384                                                &cmd->sg_frame_phys_addr);
 385
 386                 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
 387                                             GFP_KERNEL, &cmd->sense_phys_addr);
 388                 /*
 389                  * megasas_teardown_frame_pool_fusion() takes care of freeing
 390                  * whatever has been allocated
 391                  */
 392                 if (!cmd->sg_frame || !cmd->sense) {
 393                         printk(KERN_DEBUG "megasas: pci_pool_alloc failed\n");
 394                         megasas_teardown_frame_pool_fusion(instance);
 395                         return -ENOMEM;
 396                 }
 397         }
 398         return 0;
 399 }
 400
 401 /**
 402  * megasas_alloc_cmds_fusion -  Allocates the command packets
 403  * @instance:           Adapter soft state
 404  *
 405  *
 406  * Each frame has a 32-bit field called context. This context is used to get
 407  * back the megasas_cmd_fusion from the frame when a frame gets completed
 408  * In this driver, the 32 bit values are the indices into an array cmd_list.
 409  * This array is used only to look up the megasas_cmd_fusion given the context.
 410  * The free commands themselves are maintained in a linked list called cmd_pool.
 411  *
 412  * cmds are formed in the io_request and sg_frame members of the
 413  * megasas_cmd_fusion. The context field is used to get a request descriptor
 414  * and is used as SMID of the cmd.
 415  * SMID value range is from 1 to max_fw_cmds.
 416  */
 417 int
 418 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 419 {
 420         int i, j, count;
 421         u32 max_cmd, io_frames_sz;
 422         struct fusion_context *fusion;
 423         struct megasas_cmd_fusion *cmd;
 424         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 425         u32 offset;
 426         dma_addr_t io_req_base_phys;
 427         u8 *io_req_base;
 428
 429         fusion = instance->ctrl_context;
 430
 431         max_cmd = instance->max_fw_cmds;
 432
 433         fusion->req_frames_desc =
 434                 dma_alloc_coherent(&instance->pdev->dev,
 435                                    fusion->request_alloc_sz,
 436                                    &fusion->req_frames_desc_phys, GFP_KERNEL);
 437
 438         if (!fusion->req_frames_desc) {
 439                 printk(KERN_ERR "megasas; Could not allocate memory for "
 440                        "request_frames\n");
 441                 goto fail_req_desc;
 442         }
 443
 444         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 445         fusion->reply_frames_desc_pool =
 446                 pci_pool_create("reply_frames pool", instance->pdev,
 447                                 fusion->reply_alloc_sz * count, 16, 0);
 448
 449         if (!fusion->reply_frames_desc_pool) {
 450                 printk(KERN_ERR "megasas; Could not allocate memory for "
 451                        "reply_frame pool\n");
 452                 goto fail_reply_desc;
 453         }
 454
 455         fusion->reply_frames_desc =
 456                 pci_pool_alloc(fusion->reply_frames_desc_pool, GFP_KERNEL,
 457                                &fusion->reply_frames_desc_phys);
 458         if (!fusion->reply_frames_desc) {
 459                 printk(KERN_ERR "megasas; Could not allocate memory for "
 460                        "reply_frame pool\n");
 461                 pci_pool_destroy(fusion->reply_frames_desc_pool);
 462                 goto fail_reply_desc;
 463         }
 464
 465         reply_desc = fusion->reply_frames_desc;
 466         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 467                 reply_desc->Words = ULLONG_MAX;
 468
 469         io_frames_sz = fusion->io_frames_alloc_sz;
 470
 471         fusion->io_request_frames_pool =
 472                 pci_pool_create("io_request_frames pool", instance->pdev,
 473                                 fusion->io_frames_alloc_sz, 16, 0);
 474
 475         if (!fusion->io_request_frames_pool) {
 476                 printk(KERN_ERR "megasas: Could not allocate memory for "
 477                        "io_request_frame pool\n");
 478                 goto fail_io_frames;
 479         }
 480
 481         fusion->io_request_frames =
 482                 pci_pool_alloc(fusion->io_request_frames_pool, GFP_KERNEL,
 483                                &fusion->io_request_frames_phys);
 484         if (!fusion->io_request_frames) {
 485                 printk(KERN_ERR "megasas: Could not allocate memory for "
 486                        "io_request_frames frames\n");
 487                 pci_pool_destroy(fusion->io_request_frames_pool);
 488                 goto fail_io_frames;
 489         }
 490
 491         /*
 492          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
 493          * Allocate the dynamic array first and then allocate individual
 494          * commands.
 495          */
 496         fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
 497                                    * max_cmd, GFP_KERNEL);
 498
 499         if (!fusion->cmd_list) {
 500                 printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
 501                        "memory for cmd_list_fusion\n");
 502                 goto fail_cmd_list;
 503         }
 504
 505         max_cmd = instance->max_fw_cmds;
 506         for (i = 0; i < max_cmd; i++) {
 507                 fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
 508                                               GFP_KERNEL);
 509                 if (!fusion->cmd_list[i]) {
 510                         printk(KERN_ERR "Could not alloc cmd list fusion\n");
 511
 512                         for (j = 0; j < i; j++)
 513                                 kfree(fusion->cmd_list[j]);
 514
 515                         kfree(fusion->cmd_list);
 516                         fusion->cmd_list = NULL;
 517                         goto fail_cmd_list;
 518                 }
 519         }
 520
 521         /* The first 256 bytes (SMID 0) is not used. Don't add to cmd list */
 522         io_req_base = fusion->io_request_frames +
 523                 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 524         io_req_base_phys = fusion->io_request_frames_phys +
 525                 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 526
 527         /*
 528          * Add all the commands to command pool (fusion->cmd_pool)
 529          */
 530
 531         /* SMID 0 is reserved. Set SMID/index from 1 */
 532         for (i = 0; i < max_cmd; i++) {
 533                 cmd = fusion->cmd_list[i];
 534                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
 535                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
 536                 cmd->index = i + 1;
 537                 cmd->scmd = NULL;
 538                 cmd->sync_cmd_idx = (u32)ULONG_MAX; /* Set to Invalid */
 539                 cmd->instance = instance;
 540                 cmd->io_request =
 541                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
 542                   (io_req_base + offset);
 543                 memset(cmd->io_request, 0,
 544                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 545                 cmd->io_request_phys_addr = io_req_base_phys + offset;
 546
 547                 list_add_tail(&cmd->list, &fusion->cmd_pool);
 548         }
 549
 550         /*
 551          * Create a frame pool and assign one frame to each cmd
 552          */
 553         if (megasas_create_frame_pool_fusion(instance)) {
 554                 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
 555                 megasas_free_cmds_fusion(instance);
 556                 goto fail_req_desc;
 557         }
 558
 559         return 0;
 560
 561 fail_cmd_list:
 562         pci_pool_free(fusion->io_request_frames_pool, fusion->io_request_frames,
 563                       fusion->io_request_frames_phys);
 564         pci_pool_destroy(fusion->io_request_frames_pool);
 565 fail_io_frames:
 566         dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
 567                           fusion->reply_frames_desc,
 568                           fusion->reply_frames_desc_phys);
 569         pci_pool_free(fusion->reply_frames_desc_pool,
 570                       fusion->reply_frames_desc,
 571                       fusion->reply_frames_desc_phys);
 572         pci_pool_destroy(fusion->reply_frames_desc_pool);
 573
 574 fail_reply_desc:
 575         dma_free_coherent(&instance->pdev->dev, fusion->request_alloc_sz,
 576                           fusion->req_frames_desc,
 577                           fusion->req_frames_desc_phys);
 578 fail_req_desc:
 579         return -ENOMEM;
 580 }
 581
 582 /**
 583  * wait_and_poll -      Issues a polling command
 584  * @instance:                   Adapter soft state
 585  * @cmd:                        Command packet to be issued
 586  *
 587  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 588  */
 589 int
 590 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 591         int seconds)
 592 {
 593         int i;
 594         struct megasas_header *frame_hdr = &cmd->frame->hdr;
 595         struct fusion_context *fusion;
 596
 597         u32 msecs = seconds * 1000;
 598
 599         fusion = instance->ctrl_context;
 600         /*
 601          * Wait for cmd_status to change
 602          */
 603         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
 604                 rmb();
 605                 msleep(20);
 606         }
 607
 608         if (frame_hdr->cmd_status == 0xff) {
 609                 if (fusion)
 610                         megasas_return_mfi_mpt_pthr(instance, cmd,
 611                                 cmd->mpt_pthr_cmd_blocked);
 612                 return -ETIME;
 613         }
 614
 615         return 0;
 616 }
 617
 618 /**
 619  * megasas_ioc_init_fusion -    Initializes the FW
 620  * @instance:           Adapter soft state
 621  *
 622  * Issues the IOC Init cmd
 623  */
 624 int
 625 megasas_ioc_init_fusion(struct megasas_instance *instance)
 626 {
 627         struct megasas_init_frame *init_frame;
 628         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage;
 629         dma_addr_t      ioc_init_handle;
 630         struct megasas_cmd *cmd;
 631         u8 ret;
 632         struct fusion_context *fusion;
 633         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
 634         int i;
 635         struct megasas_header *frame_hdr;
 636
 637         fusion = instance->ctrl_context;
 638
 639         cmd = megasas_get_cmd(instance);
 640
 641         if (!cmd) {
 642                 printk(KERN_ERR "Could not allocate cmd for INIT Frame\n");
 643                 ret = 1;
 644                 goto fail_get_cmd;
 645         }
 646
 647         IOCInitMessage =
 648           dma_alloc_coherent(&instance->pdev->dev,
 649                              sizeof(struct MPI2_IOC_INIT_REQUEST),
 650                              &ioc_init_handle, GFP_KERNEL);
 651
 652         if (!IOCInitMessage) {
 653                 printk(KERN_ERR "Could not allocate memory for "
 654                        "IOCInitMessage\n");
 655                 ret = 1;
 656                 goto fail_fw_init;
 657         }
 658
 659         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
 660
 661         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
 662         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
 663         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
 664         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
 665         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
 666
 667         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
 668         IOCInitMessage->ReplyDescriptorPostQueueAddress = cpu_to_le64(fusion->reply_frames_desc_phys);
 669         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
 670         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
 671         init_frame = (struct megasas_init_frame *)cmd->frame;
 672         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
 673
 674         frame_hdr = &cmd->frame->hdr;
 675         frame_hdr->cmd_status = 0xFF;
 676         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
 677
 678         init_frame->cmd = MFI_CMD_INIT;
 679         init_frame->cmd_status = 0xFF;
 680
 681         /* driver support Extended MSIX */
 682         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
 683                 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
 684                 init_frame->driver_operations.
 685                         mfi_capabilities.support_additional_msix = 1;
 686         /* driver supports HA / Remote LUN over Fast Path interface */
 687         init_frame->driver_operations.mfi_capabilities.support_fp_remote_lun
 688                 = 1;
 689         init_frame->driver_operations.mfi_capabilities.support_max_255lds
 690                 = 1;
 691         init_frame->driver_operations.mfi_capabilities.support_ndrive_r1_lb
 692                 = 1;
 693         init_frame->driver_operations.mfi_capabilities.security_protocol_cmds_fw
 694                 = 1;
 695         /* Convert capability to LE32 */
 696         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
 697
 698         init_frame->queue_info_new_phys_addr_hi =
 699                 cpu_to_le32(upper_32_bits(ioc_init_handle));
 700         init_frame->queue_info_new_phys_addr_lo =
 701                 cpu_to_le32(lower_32_bits(ioc_init_handle));
 702         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
 703
 704         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
 705         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
 706         req_desc.MFAIo.RequestFlags =
 707                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
 708                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
 709
 710         /*
 711          * disable the intr before firing the init frame
 712          */
 713         instance->instancet->disable_intr(instance);
 714
 715         for (i = 0; i < (10 * 1000); i += 20) {
 716                 if (readl(&instance->reg_set->doorbell) & 1)
 717                         msleep(20);
 718                 else
 719                         break;
 720         }
 721
 722         instance->instancet->fire_cmd(instance, req_desc.u.low,
 723                                       req_desc.u.high, instance->reg_set);
 724
 725         wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
 726
 727         frame_hdr = &cmd->frame->hdr;
 728         if (frame_hdr->cmd_status != 0) {
 729                 ret = 1;
 730                 goto fail_fw_init;
 731         }
 732         printk(KERN_ERR "megasas:IOC Init cmd success\n");
 733
 734         ret = 0;
 735
 736 fail_fw_init:
 737         megasas_return_cmd(instance, cmd);
 738         if (IOCInitMessage)
 739                 dma_free_coherent(&instance->pdev->dev,
 740                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
 741                                   IOCInitMessage, ioc_init_handle);
 742 fail_get_cmd:
 743         return ret;
 744 }
 745
 746 /*
 747  * megasas_get_ld_map_info -    Returns FW's ld_map structure
 748  * @instance:                           Adapter soft state
 749  * @pend:                               Pend the command or not
 750  * Issues an internal command (DCMD) to get the FW's controller PD
 751  * list structure.  This information is mainly used to find out SYSTEM
 752  * supported by the FW.
 753  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
 754  * dcmd.mbox.b[0]       - number of LDs being sync'd
 755  * dcmd.mbox.b[1]       - 0 - complete command immediately.
 756  *                      - 1 - pend till config change
 757  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
 758  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
 759  *                              uses extended struct MR_FW_RAID_MAP_EXT
 760  */
 761 static int
 762 megasas_get_ld_map_info(struct megasas_instance *instance)
 763 {
 764         int ret = 0;
 765         struct megasas_cmd *cmd;
 766         struct megasas_dcmd_frame *dcmd;
 767         void *ci;
 768         dma_addr_t ci_h = 0;
 769         u32 size_map_info;
 770         struct fusion_context *fusion;
 771
 772         cmd = megasas_get_cmd(instance);
 773
 774         if (!cmd) {
 775                 printk(KERN_DEBUG "megasas: Failed to get cmd for map info.\n");
 776                 return -ENOMEM;
 777         }
 778
 779         fusion = instance->ctrl_context;
 780
 781         if (!fusion) {
 782                 megasas_return_cmd(instance, cmd);
 783                 return -ENXIO;
 784         }
 785
 786         dcmd = &cmd->frame->dcmd;
 787
 788         size_map_info = fusion->current_map_sz;
 789
 790         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
 791         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
 792
 793         if (!ci) {
 794                 printk(KERN_DEBUG "Failed to alloc mem for ld_map_info\n");
 795                 megasas_return_cmd(instance, cmd);
 796                 return -ENOMEM;
 797         }
 798
 799         memset(ci, 0, fusion->max_map_sz);
 800         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
 801 #if VD_EXT_DEBUG
 802         dev_dbg(&instance->pdev->dev,
 803                 "%s sending MR_DCMD_LD_MAP_GET_INFO with size %d\n",
 804                 __func__, cpu_to_le32(size_map_info));
 805 #endif
 806         dcmd->cmd = MFI_CMD_DCMD;
 807         dcmd->cmd_status = 0xFF;
 808         dcmd->sge_count = 1;
 809         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
 810         dcmd->timeout = 0;
 811         dcmd->pad_0 = 0;
 812         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
 813         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
 814         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
 815         dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
 816
 817         if (instance->ctrl_context && !instance->mask_interrupts)
 818                 ret = megasas_issue_blocked_cmd(instance, cmd,
 819                         MEGASAS_BLOCKED_CMD_TIMEOUT);
 820         else
 821                 ret = megasas_issue_polled(instance, cmd);
 822
 823         if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
 824                 megasas_return_mfi_mpt_pthr(instance, cmd,
 825                         cmd->mpt_pthr_cmd_blocked);
 826         else
 827                 megasas_return_cmd(instance, cmd);
 828
 829         return ret;
 830 }
 831
 832 u8
 833 megasas_get_map_info(struct megasas_instance *instance)
 834 {
 835         struct fusion_context *fusion = instance->ctrl_context;
 836
 837         fusion->fast_path_io = 0;
 838         if (!megasas_get_ld_map_info(instance)) {
 839                 if (MR_ValidateMapInfo(instance)) {
 840                         fusion->fast_path_io = 1;
 841                         return 0;
 842                 }
 843         }
 844         return 1;
 845 }
 846
 847 /*
 848  * megasas_sync_map_info -      Returns FW's ld_map structure
 849  * @instance:                           Adapter soft state
 850  *
 851  * Issues an internal command (DCMD) to get the FW's controller PD
 852  * list structure.  This information is mainly used to find out SYSTEM
 853  * supported by the FW.
 854  */
 855 int
 856 megasas_sync_map_info(struct megasas_instance *instance)
 857 {
 858         int ret = 0, i;
 859         struct megasas_cmd *cmd;
 860         struct megasas_dcmd_frame *dcmd;
 861         u32 size_sync_info, num_lds;
 862         struct fusion_context *fusion;
 863         struct MR_LD_TARGET_SYNC *ci = NULL;
 864         struct MR_DRV_RAID_MAP_ALL *map;
 865         struct MR_LD_RAID  *raid;
 866         struct MR_LD_TARGET_SYNC *ld_sync;
 867         dma_addr_t ci_h = 0;
 868         u32 size_map_info;
 869
 870         cmd = megasas_get_cmd(instance);
 871
 872         if (!cmd) {
 873                 printk(KERN_DEBUG "megasas: Failed to get cmd for sync"
 874                        "info.\n");
 875                 return -ENOMEM;
 876         }
 877
 878         fusion = instance->ctrl_context;
 879
 880         if (!fusion) {
 881                 megasas_return_cmd(instance, cmd);
 882                 return 1;
 883         }
 884
 885         map = fusion->ld_drv_map[instance->map_id & 1];
 886
 887         num_lds = le16_to_cpu(map->raidMap.ldCount);
 888
 889         dcmd = &cmd->frame->dcmd;
 890
 891         size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
 892
 893         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
 894
 895         ci = (struct MR_LD_TARGET_SYNC *)
 896           fusion->ld_map[(instance->map_id - 1) & 1];
 897         memset(ci, 0, fusion->max_map_sz);
 898
 899         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
 900
 901         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
 902
 903         for (i = 0; i < num_lds; i++, ld_sync++) {
 904                 raid = MR_LdRaidGet(i, map);
 905                 ld_sync->targetId = MR_GetLDTgtId(i, map);
 906                 ld_sync->seqNum = raid->seqNum;
 907         }
 908
 909         size_map_info = fusion->current_map_sz;
 910
 911         dcmd->cmd = MFI_CMD_DCMD;
 912         dcmd->cmd_status = 0xFF;
 913         dcmd->sge_count = 1;
 914         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
 915         dcmd->timeout = 0;
 916         dcmd->pad_0 = 0;
 917         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
 918         dcmd->mbox.b[0] = num_lds;
 919         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
 920         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
 921         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
 922         dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
 923
 924         instance->map_update_cmd = cmd;
 925
 926         instance->instancet->issue_dcmd(instance, cmd);
 927
 928         return ret;
 929 }
 930
 931 /*
 932  * meagasas_display_intel_branding - Display branding string
 933  * @instance: per adapter object
 934  *
 935  * Return nothing.
 936  */
 937 static void
 938 megasas_display_intel_branding(struct megasas_instance *instance)
 939 {
 940         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
 941                 return;
 942
 943         switch (instance->pdev->device) {
 944         case PCI_DEVICE_ID_LSI_INVADER:
 945                 switch (instance->pdev->subsystem_device) {
 946                 case MEGARAID_INTEL_RS3DC080_SSDID:
 947                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
 948                                 instance->host->host_no,
 949                                 MEGARAID_INTEL_RS3DC080_BRANDING);
 950                         break;
 951                 case MEGARAID_INTEL_RS3DC040_SSDID:
 952                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
 953                                 instance->host->host_no,
 954                                 MEGARAID_INTEL_RS3DC040_BRANDING);
 955                         break;
 956                 case MEGARAID_INTEL_RS3SC008_SSDID:
 957                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
 958                                 instance->host->host_no,
 959                                 MEGARAID_INTEL_RS3SC008_BRANDING);
 960                         break;
 961                 case MEGARAID_INTEL_RS3MC044_SSDID:
 962                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
 963                                 instance->host->host_no,
 964                                 MEGARAID_INTEL_RS3MC044_BRANDING);
 965                         break;
 966                 default:
 967                         break;
 968                 }
 969                 break;
 970         case PCI_DEVICE_ID_LSI_FURY:
 971                 switch (instance->pdev->subsystem_device) {
 972                 case MEGARAID_INTEL_RS3WC080_SSDID:
 973                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
 974                                 instance->host->host_no,
 975                                 MEGARAID_INTEL_RS3WC080_BRANDING);
 976                         break;
 977                 case MEGARAID_INTEL_RS3WC040_SSDID:
 978                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
 979                                 instance->host->host_no,
 980                                 MEGARAID_INTEL_RS3WC040_BRANDING);
 981                         break;
 982                 default:
 983                         break;
 984                 }
 985                 break;
 986         default:
 987                 break;
 988         }
 989 }
 990
 991 /**
 992  * megasas_init_adapter_fusion -        Initializes the FW
 993  * @instance:           Adapter soft state
 994  *
 995  * This is the main function for initializing firmware.
 996  */
 997 u32
 998 megasas_init_adapter_fusion(struct megasas_instance *instance)
 999 {
1000         struct megasas_register_set __iomem *reg_set;
1001         struct fusion_context *fusion;
1002         u32 max_cmd;
1003         int i = 0, count;
1004
1005         fusion = instance->ctrl_context;
1006
1007         reg_set = instance->reg_set;
1008
1009         /*
1010          * Get various operational parameters from status register
1011          */
1012         instance->max_fw_cmds =
1013                 instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
1014         instance->max_fw_cmds = min(instance->max_fw_cmds, (u16)1008);
1015
1016         /*
1017          * Reduce the max supported cmds by 1. This is to ensure that the
1018          * reply_q_sz (1 more than the max cmd that driver may send)
1019          * does not exceed max cmds that the FW can support
1020          */
1021         instance->max_fw_cmds = instance->max_fw_cmds-1;
1022
1023         /*
1024          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1025          */
1026         instance->max_mfi_cmds =
1027                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1028
1029         max_cmd = instance->max_fw_cmds;
1030
1031         fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
1032
1033         fusion->request_alloc_sz =
1034                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
1035         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
1036                 *(fusion->reply_q_depth);
1037         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1038                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
1039                  (max_cmd + 1)); /* Extra 1 for SMID 0 */
1040
1041         fusion->max_sge_in_main_msg =
1042           (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1043            offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1044
1045         fusion->max_sge_in_chain =
1046                 MEGASAS_MAX_SZ_CHAIN_FRAME / sizeof(union MPI2_SGE_IO_UNION);
1047
1048         instance->max_num_sge = rounddown_pow_of_two(
1049                 fusion->max_sge_in_main_msg + fusion->max_sge_in_chain - 2);
1050
1051         /* Used for pass thru MFI frame (DCMD) */
1052         fusion->chain_offset_mfi_pthru =
1053                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1054
1055         fusion->chain_offset_io_request =
1056                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1057                  sizeof(union MPI2_SGE_IO_UNION))/16;
1058
1059         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1060         for (i = 0 ; i < count; i++)
1061                 fusion->last_reply_idx[i] = 0;
1062
1063         /*
1064          * Allocate memory for descriptors
1065          * Create a pool of commands
1066          */
1067         if (megasas_alloc_cmds(instance))
1068                 goto fail_alloc_mfi_cmds;
1069         if (megasas_alloc_cmds_fusion(instance))
1070                 goto fail_alloc_cmds;
1071
1072         if (megasas_ioc_init_fusion(instance))
1073                 goto fail_ioc_init;
1074
1075         megasas_display_intel_branding(instance);
1076         if (megasas_get_ctrl_info(instance)) {
1077                 dev_err(&instance->pdev->dev,
1078                         "Could not get controller info. Fail from %s %d\n",
1079                         __func__, __LINE__);
1080                 goto fail_ioc_init;
1081         }
1082
1083         instance->flag_ieee = 1;
1084         fusion->fast_path_io = 0;
1085
1086         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1087         for (i = 0; i < 2; i++) {
1088                 fusion->ld_map[i] = NULL;
1089                 fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL,
1090                         fusion->drv_map_pages);
1091                 if (!fusion->ld_drv_map[i]) {
1092                         dev_err(&instance->pdev->dev, "Could not allocate "
1093                                 "memory for local map info for %d pages\n",
1094                                 fusion->drv_map_pages);
1095                         if (i == 1)
1096                                 free_pages((ulong)fusion->ld_drv_map[0],
1097                                         fusion->drv_map_pages);
1098                         goto fail_ioc_init;
1099                 }
1100                 memset(fusion->ld_drv_map[i], 0,
1101                         ((1 << PAGE_SHIFT) << fusion->drv_map_pages));
1102         }
1103
1104         for (i = 0; i < 2; i++) {
1105                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1106                                                        fusion->max_map_sz,
1107                                                        &fusion->ld_map_phys[i],
1108                                                        GFP_KERNEL);
1109                 if (!fusion->ld_map[i]) {
1110                         printk(KERN_ERR "megasas: Could not allocate memory "
1111                                "for map info\n");
1112                         goto fail_map_info;
1113                 }
1114         }
1115
1116         if (!megasas_get_map_info(instance))
1117                 megasas_sync_map_info(instance);
1118
1119         return 0;
1120
1121 fail_map_info:
1122         if (i == 1)
1123                 dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz,
1124                                   fusion->ld_map[0], fusion->ld_map_phys[0]);
1125 fail_ioc_init:
1126         megasas_free_cmds_fusion(instance);
1127 fail_alloc_cmds:
1128         megasas_free_cmds(instance);
1129 fail_alloc_mfi_cmds:
1130         return 1;
1131 }
1132
1133 /**
1134  * megasas_fire_cmd_fusion -    Sends command to the FW
1135  * @frame_phys_addr :           Physical address of cmd
1136  * @frame_count :               Number of frames for the command
1137  * @regs :                      MFI register set
1138  */
1139 void
1140 megasas_fire_cmd_fusion(struct megasas_instance *instance,
1141                         dma_addr_t req_desc_lo,
1142                         u32 req_desc_hi,
1143                         struct megasas_register_set __iomem *regs)
1144 {
1145 #if defined(writeq) && defined(CONFIG_64BIT)
1146         u64 req_data = (((u64)le32_to_cpu(req_desc_hi) << 32) |
1147                         le32_to_cpu(req_desc_lo));
1148
1149         writeq(req_data, &(regs)->inbound_low_queue_port);
1150 #else
1151         unsigned long flags;
1152
1153         spin_lock_irqsave(&instance->hba_lock, flags);
1154
1155         writel(le32_to_cpu(req_desc_lo), &(regs)->inbound_low_queue_port);
1156         writel(le32_to_cpu(req_desc_hi), &(regs)->inbound_high_queue_port);
1157         spin_unlock_irqrestore(&instance->hba_lock, flags);
1158 #endif
1159 }
1160
1161 /**
1162  * map_cmd_status -     Maps FW cmd status to OS cmd status
1163  * @cmd :               Pointer to cmd
1164  * @status :            status of cmd returned by FW
1165  * @ext_status :        ext status of cmd returned by FW
1166  */
1167
1168 void
1169 map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1170 {
1171
1172         switch (status) {
1173
1174         case MFI_STAT_OK:
1175                 cmd->scmd->result = DID_OK << 16;
1176                 break;
1177
1178         case MFI_STAT_SCSI_IO_FAILED:
1179         case MFI_STAT_LD_INIT_IN_PROGRESS:
1180                 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1181                 break;
1182
1183         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1184
1185                 cmd->scmd->result = (DID_OK << 16) | ext_status;
1186                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1187                         memset(cmd->scmd->sense_buffer, 0,
1188                                SCSI_SENSE_BUFFERSIZE);
1189                         memcpy(cmd->scmd->sense_buffer, cmd->sense,
1190                                SCSI_SENSE_BUFFERSIZE);
1191                         cmd->scmd->result |= DRIVER_SENSE << 24;
1192                 }
1193                 break;
1194
1195         case MFI_STAT_LD_OFFLINE:
1196         case MFI_STAT_DEVICE_NOT_FOUND:
1197                 cmd->scmd->result = DID_BAD_TARGET << 16;
1198                 break;
1199         case MFI_STAT_CONFIG_SEQ_MISMATCH:
1200                 cmd->scmd->result = DID_IMM_RETRY << 16;
1201                 break;
1202         default:
1203                 printk(KERN_DEBUG "megasas: FW status %#x\n", status);
1204                 cmd->scmd->result = DID_ERROR << 16;
1205                 break;
1206         }
1207 }
1208
1209 /**
1210  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
1211  * @instance:           Adapter soft state
1212  * @scp:                SCSI command from the mid-layer
1213  * @sgl_ptr:            SGL to be filled in
1214  * @cmd:                cmd we are working on
1215  *
1216  * If successful, this function returns the number of SG elements.
1217  */
1218 static int
1219 megasas_make_sgl_fusion(struct megasas_instance *instance,
1220                         struct scsi_cmnd *scp,
1221                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1222                         struct megasas_cmd_fusion *cmd)
1223 {
1224         int i, sg_processed, sge_count;
1225         struct scatterlist *os_sgl;
1226         struct fusion_context *fusion;
1227
1228         fusion = instance->ctrl_context;
1229
1230         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1231                 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1232                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
1233                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1234                 sgl_ptr_end->Flags = 0;
1235         }
1236
1237         sge_count = scsi_dma_map(scp);
1238
1239         BUG_ON(sge_count < 0);
1240
1241         if (sge_count > instance->max_num_sge || !sge_count)
1242                 return sge_count;
1243
1244         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1245                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
1246                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
1247                 sgl_ptr->Flags = 0;
1248                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1249                         (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1250                         if (i == sge_count - 1)
1251                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1252                 }
1253                 sgl_ptr++;
1254
1255                 sg_processed = i + 1;
1256
1257                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
1258                     (sge_count > fusion->max_sge_in_main_msg)) {
1259
1260                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1261                         if ((instance->pdev->device ==
1262                                 PCI_DEVICE_ID_LSI_INVADER) ||
1263                                 (instance->pdev->device ==
1264                                 PCI_DEVICE_ID_LSI_FURY)) {
1265                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
1266                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
1267                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1268                                         cmd->io_request->ChainOffset =
1269                                                 fusion->
1270                                                 chain_offset_io_request;
1271                                 else
1272                                         cmd->io_request->ChainOffset = 0;
1273                         } else
1274                                 cmd->io_request->ChainOffset =
1275                                         fusion->chain_offset_io_request;
1276
1277                         sg_chain = sgl_ptr;
1278                         /* Prepare chain element */
1279                         sg_chain->NextChainOffset = 0;
1280                         if ((instance->pdev->device ==
1281                                 PCI_DEVICE_ID_LSI_INVADER) ||
1282                                 (instance->pdev->device ==
1283                                 PCI_DEVICE_ID_LSI_FURY))
1284                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1285                         else
1286                                 sg_chain->Flags =
1287                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1288                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1289                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
1290                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
1291
1292                         sgl_ptr =
1293                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1294                         memset(sgl_ptr, 0, MEGASAS_MAX_SZ_CHAIN_FRAME);
1295                 }
1296         }
1297
1298         return sge_count;
1299 }
1300
1301 /**
1302  * megasas_set_pd_lba - Sets PD LBA
1303  * @cdb:                CDB
1304  * @cdb_len:            cdb length
1305  * @start_blk:          Start block of IO
1306  *
1307  * Used to set the PD LBA in CDB for FP IOs
1308  */
1309 void
1310 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1311                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1312                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1313 {
1314         struct MR_LD_RAID *raid;
1315         u32 ld;
1316         u64 start_blk = io_info->pdBlock;
1317         u8 *cdb = io_request->CDB.CDB32;
1318         u32 num_blocks = io_info->numBlocks;
1319         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1320
1321         /* Check if T10 PI (DIF) is enabled for this LD */
1322         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1323         raid = MR_LdRaidGet(ld, local_map_ptr);
1324         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1325                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1326                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1327                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
1328
1329                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1330                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1331                 else
1332                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1333                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1334
1335                 /* LBA */
1336                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1337                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1338                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1339                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1340                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1341                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1342                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1343                 cdb[19] = (u8)(start_blk & 0xff);
1344
1345                 /* Logical block reference tag */
1346                 io_request->CDB.EEDP32.PrimaryReferenceTag =
1347                         cpu_to_be32(ref_tag);
1348                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
1349                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
1350
1351                 /* Transfer length */
1352                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1353                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1354                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1355                 cdb[31] = (u8)(num_blocks & 0xff);
1356
1357                 /* set SCSI IO EEDPFlags */
1358                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1359                         io_request->EEDPFlags = cpu_to_le16(
1360                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
1361                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1362                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1363                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1364                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
1365                 } else {
1366                         io_request->EEDPFlags = cpu_to_le16(
1367                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1368                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
1369                 }
1370                 io_request->Control |= cpu_to_le32((0x4 << 26));
1371                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
1372         } else {
1373                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1374                 if (((cdb_len == 12) || (cdb_len == 16)) &&
1375                     (start_blk <= 0xffffffff)) {
1376                         if (cdb_len == 16) {
1377                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1378                                 flagvals = cdb[1];
1379                                 groupnum = cdb[14];
1380                                 control = cdb[15];
1381                         } else {
1382                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1383                                 flagvals = cdb[1];
1384                                 groupnum = cdb[10];
1385                                 control = cdb[11];
1386                         }
1387
1388                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1389
1390                         cdb[0] = opcode;
1391                         cdb[1] = flagvals;
1392                         cdb[6] = groupnum;
1393                         cdb[9] = control;
1394
1395                         /* Transfer length */
1396                         cdb[8] = (u8)(num_blocks & 0xff);
1397                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1398
1399                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
1400                         cdb_len = 10;
1401                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
1402                         /* Convert to 16 byte CDB for large LBA's */
1403                         switch (cdb_len) {
1404                         case 6:
1405                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
1406                                 control = cdb[5];
1407                                 break;
1408                         case 10:
1409                                 opcode =
1410                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
1411                                 flagvals = cdb[1];
1412                                 groupnum = cdb[6];
1413                                 control = cdb[9];
1414                                 break;
1415                         case 12:
1416                                 opcode =
1417                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
1418                                 flagvals = cdb[1];
1419                                 groupnum = cdb[10];
1420                                 control = cdb[11];
1421                                 break;
1422                         }
1423
1424                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1425
1426                         cdb[0] = opcode;
1427                         cdb[1] = flagvals;
1428                         cdb[14] = groupnum;
1429                         cdb[15] = control;
1430
1431                         /* Transfer length */
1432                         cdb[13] = (u8)(num_blocks & 0xff);
1433                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
1434                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
1435                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
1436
1437                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
1438                         cdb_len = 16;
1439                 }
1440
1441                 /* Normal case, just load LBA here */
1442                 switch (cdb_len) {
1443                 case 6:
1444                 {
1445                         u8 val = cdb[1] & 0xE0;
1446                         cdb[3] = (u8)(start_blk & 0xff);
1447                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
1448                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1449                         break;
1450                 }
1451                 case 10:
1452                         cdb[5] = (u8)(start_blk & 0xff);
1453                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
1454                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
1455                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
1456                         break;
1457                 case 12:
1458                         cdb[5]    = (u8)(start_blk & 0xff);
1459                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
1460                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
1461                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
1462                         break;
1463                 case 16:
1464                         cdb[9]    = (u8)(start_blk & 0xff);
1465                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
1466                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
1467                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
1468                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
1469                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
1470                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
1471                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
1472                         break;
1473                 }
1474         }
1475 }
1476
1477 /**
1478  * megasas_build_ldio_fusion -  Prepares IOs to devices
1479  * @instance:           Adapter soft state
1480  * @scp:                SCSI command
1481  * @cmd:                Command to be prepared
1482  *
1483  * Prepares the io_request and chain elements (sg_frame) for IO
1484  * The IO can be for PD (Fast Path) or LD
1485  */
1486 void
1487 megasas_build_ldio_fusion(struct megasas_instance *instance,
1488                           struct scsi_cmnd *scp,
1489                           struct megasas_cmd_fusion *cmd)
1490 {
1491         u8 fp_possible;
1492         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
1493         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1494         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1495         struct IO_REQUEST_INFO io_info;
1496         struct fusion_context *fusion;
1497         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1498         u8 *raidLUN;
1499
1500         device_id = MEGASAS_DEV_INDEX(scp);
1501
1502         fusion = instance->ctrl_context;
1503
1504         io_request = cmd->io_request;
1505         io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
1506         io_request->RaidContext.status = 0;
1507         io_request->RaidContext.exStatus = 0;
1508
1509         req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1510
1511         start_lba_lo = 0;
1512         start_lba_hi = 0;
1513         fp_possible = 0;
1514
1515         /*
1516          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1517          */
1518         if (scp->cmd_len == 6) {
1519                 datalength = (u32) scp->cmnd[4];
1520                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1521                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1522
1523                 start_lba_lo &= 0x1FFFFF;
1524         }
1525
1526         /*
1527          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1528          */
1529         else if (scp->cmd_len == 10) {
1530                 datalength = (u32) scp->cmnd[8] |
1531                         ((u32) scp->cmnd[7] << 8);
1532                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1533                         ((u32) scp->cmnd[3] << 16) |
1534                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1535         }
1536
1537         /*
1538          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1539          */
1540         else if (scp->cmd_len == 12) {
1541                 datalength = ((u32) scp->cmnd[6] << 24) |
1542                         ((u32) scp->cmnd[7] << 16) |
1543                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1544                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1545                         ((u32) scp->cmnd[3] << 16) |
1546                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1547         }
1548
1549         /*
1550          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1551          */
1552         else if (scp->cmd_len == 16) {
1553                 datalength = ((u32) scp->cmnd[10] << 24) |
1554                         ((u32) scp->cmnd[11] << 16) |
1555                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1556                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1557                         ((u32) scp->cmnd[7] << 16) |
1558                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1559
1560                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1561                         ((u32) scp->cmnd[3] << 16) |
1562                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1563         }
1564
1565         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1566         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1567         io_info.numBlocks = datalength;
1568         io_info.ldTgtId = device_id;
1569         io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
1570
1571         if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1572                 io_info.isRead = 1;
1573
1574         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1575
1576         if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1577                 instance->fw_supported_vd_count) || (!fusion->fast_path_io)) {
1578                 io_request->RaidContext.regLockFlags  = 0;
1579                 fp_possible = 0;
1580         } else {
1581                 if (MR_BuildRaidContext(instance, &io_info,
1582                                         &io_request->RaidContext,
1583                                         local_map_ptr, &raidLUN))
1584                         fp_possible = io_info.fpOkForIo;
1585         }
1586
1587         /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
1588            id by default, not CPU group id, otherwise all MSI-X queues won't
1589            be utilized */
1590         cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
1591                 raw_smp_processor_id() % instance->msix_vectors : 0;
1592
1593         if (fp_possible) {
1594                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1595                                    local_map_ptr, start_lba_lo);
1596                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1597                 cmd->request_desc->SCSIIO.RequestFlags =
1598                         (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY
1599                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1600                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1601                         (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1602                         if (io_request->RaidContext.regLockFlags ==
1603                             REGION_TYPE_UNUSED)
1604                                 cmd->request_desc->SCSIIO.RequestFlags =
1605                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1606                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1607                         io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1608                         io_request->RaidContext.nseg = 0x1;
1609                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
1610                         io_request->RaidContext.regLockFlags |=
1611                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
1612                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
1613                 }
1614                 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1615                     (io_info.isRead)) {
1616                         io_info.devHandle =
1617                                 get_updated_dev_handle(instance,
1618                                         &fusion->load_balance_info[device_id],
1619                                         &io_info);
1620                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1621                         cmd->pd_r1_lb = io_info.pd_after_lb;
1622                 } else
1623                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1624                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1625                 io_request->DevHandle = io_info.devHandle;
1626                 /* populate the LUN field */
1627                 memcpy(io_request->LUN, raidLUN, 8);
1628         } else {
1629                 io_request->RaidContext.timeoutValue =
1630                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
1631                 cmd->request_desc->SCSIIO.RequestFlags =
1632                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1633                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1634                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1635                         (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1636                         if (io_request->RaidContext.regLockFlags ==
1637                             REGION_TYPE_UNUSED)
1638                                 cmd->request_desc->SCSIIO.RequestFlags =
1639                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1640                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1641                         io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1642                         io_request->RaidContext.regLockFlags |=
1643                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
1644                                  MR_RL_FLAGS_SEQ_NUM_ENABLE);
1645                         io_request->RaidContext.nseg = 0x1;
1646                 }
1647                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1648                 io_request->DevHandle = cpu_to_le16(device_id);
1649         } /* Not FP */
1650 }
1651
1652 /**
1653  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
1654  * @instance:           Adapter soft state
1655  * @scp:                SCSI command
1656  * @cmd:                Command to be prepared
1657  *
1658  * Prepares the io_request frame for non-rw io cmds for vd.
1659  */
1660 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
1661                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
1662 {
1663         u32 device_id;
1664         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1665         u16 pd_index = 0;
1666         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1667         struct fusion_context *fusion = instance->ctrl_context;
1668         u8                          span, physArm;
1669         u16                         devHandle;
1670         u32                         ld, arRef, pd;
1671         struct MR_LD_RAID                  *raid;
1672         struct RAID_CONTEXT                *pRAID_Context;
1673         u8 fp_possible = 1;
1674
1675         io_request = cmd->io_request;
1676         device_id = MEGASAS_DEV_INDEX(scmd);
1677         pd_index = MEGASAS_PD_INDEX(scmd);
1678         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1679         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1680         /* get RAID_Context pointer */
1681         pRAID_Context = &io_request->RaidContext;
1682         /* Check with FW team */
1683         pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
1684         pRAID_Context->regLockRowLBA    = 0;
1685         pRAID_Context->regLockLength    = 0;
1686
1687         if (fusion->fast_path_io && (
1688                 device_id < instance->fw_supported_vd_count)) {
1689
1690                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1691                 if (ld >= instance->fw_supported_vd_count)
1692                         fp_possible = 0;
1693
1694                 raid = MR_LdRaidGet(ld, local_map_ptr);
1695                 if (!(raid->capability.fpNonRWCapable))
1696                         fp_possible = 0;
1697         } else
1698                 fp_possible = 0;
1699
1700         if (!fp_possible) {
1701                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1702                 io_request->DevHandle = cpu_to_le16(device_id);
1703                 io_request->LUN[1] = scmd->device->lun;
1704                 pRAID_Context->timeoutValue =
1705                         cpu_to_le16 (scmd->request->timeout / HZ);
1706                 cmd->request_desc->SCSIIO.RequestFlags =
1707                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1708                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1709         } else {
1710
1711                 /* set RAID context values */
1712                 pRAID_Context->configSeqNum = raid->seqNum;
1713                 pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ;
1714                 pRAID_Context->timeoutValue = cpu_to_le16(raid->fpIoTimeoutForLd);
1715
1716                 /* get the DevHandle for the PD (since this is
1717                    fpNonRWCapable, this is a single disk RAID0) */
1718                 span = physArm = 0;
1719                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
1720                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
1721                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
1722
1723                 /* build request descriptor */
1724                 cmd->request_desc->SCSIIO.RequestFlags =
1725                         (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1726                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1727                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
1728
1729                 /* populate the LUN field */
1730                 memcpy(io_request->LUN, raid->LUN, 8);
1731
1732                 /* build the raidScsiIO structure */
1733                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1734                 io_request->DevHandle = devHandle;
1735         }
1736 }
1737
1738 /**
1739  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
1740  * @instance:           Adapter soft state
1741  * @scp:                SCSI command
1742  * @cmd:                Command to be prepared
1743  * @fp_possible:        parameter to detect fast path or firmware path io.
1744  *
1745  * Prepares the io_request frame for rw/non-rw io cmds for syspds
1746  */
1747 static void
1748 megasas_build_syspd_fusion(struct megasas_instance *instance,
1749         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd, u8 fp_possible)
1750 {
1751         u32 device_id;
1752         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1753         u16 pd_index = 0;
1754         u16 os_timeout_value;
1755         u16 timeout_limit;
1756         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1757         struct RAID_CONTEXT     *pRAID_Context;
1758         struct fusion_context *fusion = instance->ctrl_context;
1759
1760         device_id = MEGASAS_DEV_INDEX(scmd);
1761         pd_index = MEGASAS_PD_INDEX(scmd);
1762         os_timeout_value = scmd->request->timeout / HZ;
1763
1764         io_request = cmd->io_request;
1765         /* get RAID_Context pointer */
1766         pRAID_Context = &io_request->RaidContext;
1767         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1768         io_request->LUN[1] = scmd->device->lun;
1769         pRAID_Context->RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
1770                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1771
1772         pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
1773         pRAID_Context->configSeqNum = 0;
1774         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1775         io_request->DevHandle =
1776                 local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
1777
1778         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
1779         cmd->request_desc->SCSIIO.MSIxIndex =
1780                 instance->msix_vectors ?
1781                 (raw_smp_processor_id() % instance->msix_vectors) : 0;
1782
1783
1784         if (!fp_possible) {
1785                 /* system pd firmware path */
1786                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1787                 cmd->request_desc->SCSIIO.RequestFlags =
1788                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1789                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1790                 pRAID_Context->timeoutValue = cpu_to_le16(os_timeout_value);
1791         } else {
1792                 /* system pd Fast Path */
1793                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1794                 pRAID_Context->regLockFlags = 0;
1795                 pRAID_Context->regLockRowLBA = 0;
1796                 pRAID_Context->regLockLength = 0;
1797                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
1798                                 255 : 0xFFFF;
1799                 pRAID_Context->timeoutValue =
1800                         cpu_to_le16((os_timeout_value > timeout_limit) ?
1801                         timeout_limit : os_timeout_value);
1802                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1803                         (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1804                         cmd->request_desc->SCSIIO.RequestFlags |=
1805                                 (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1806                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1807                         pRAID_Context->Type = MPI2_TYPE_CUDA;
1808                         pRAID_Context->nseg = 0x1;
1809                         io_request->IoFlags |=
1810                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
1811                 }
1812                 cmd->request_desc->SCSIIO.RequestFlags =
1813                         (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
1814                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1815         }
1816 }
1817
1818 /**
1819  * megasas_build_io_fusion -    Prepares IOs to devices
1820  * @instance:           Adapter soft state
1821  * @scp:                SCSI command
1822  * @cmd:                Command to be prepared
1823  *
1824  * Invokes helper functions to prepare request frames
1825  * and sets flags appropriate for IO/Non-IO cmd
1826  */
1827 int
1828 megasas_build_io_fusion(struct megasas_instance *instance,
1829                         struct scsi_cmnd *scp,
1830                         struct megasas_cmd_fusion *cmd)
1831 {
1832         u32 sge_count;
1833         u8  cmd_type;
1834         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
1835
1836         /* Zero out some fields so they don't get reused */
1837         memset(io_request->LUN, 0x0, 8);
1838         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
1839         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
1840         io_request->EEDPFlags = 0;
1841         io_request->Control = 0;
1842         io_request->EEDPBlockSize = 0;
1843         io_request->ChainOffset = 0;
1844         io_request->RaidContext.RAIDFlags = 0;
1845         io_request->RaidContext.Type = 0;
1846         io_request->RaidContext.nseg = 0;
1847
1848         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
1849         /*
1850          * Just the CDB length,rest of the Flags are zero
1851          * This will be modified for FP in build_ldio_fusion
1852          */
1853         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
1854
1855         switch (cmd_type = megasas_cmd_type(scp)) {
1856         case READ_WRITE_LDIO:
1857                 megasas_build_ldio_fusion(instance, scp, cmd);
1858                 break;
1859         case NON_READ_WRITE_LDIO:
1860                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
1861                 break;
1862         case READ_WRITE_SYSPDIO:
1863         case NON_READ_WRITE_SYSPDIO:
1864                 if (instance->secure_jbod_support &&
1865                         (cmd_type == NON_READ_WRITE_SYSPDIO))
1866                         megasas_build_syspd_fusion(instance, scp, cmd, 0);
1867                 else
1868                         megasas_build_syspd_fusion(instance, scp, cmd, 1);
1869                 break;
1870         default:
1871                 break;
1872         }
1873
1874         /*
1875          * Construct SGL
1876          */
1877
1878         sge_count =
1879                 megasas_make_sgl_fusion(instance, scp,
1880                                         (struct MPI25_IEEE_SGE_CHAIN64 *)
1881                                         &io_request->SGL, cmd);
1882
1883         if (sge_count > instance->max_num_sge) {
1884                 printk(KERN_ERR "megasas: Error. sge_count (0x%x) exceeds "
1885                        "max (0x%x) allowed\n", sge_count,
1886                        instance->max_num_sge);
1887                 return 1;
1888         }
1889
1890         io_request->RaidContext.numSGE = sge_count;
1891
1892         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
1893
1894         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1895                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
1896         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1897                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
1898
1899         io_request->SGLOffset0 =
1900                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
1901
1902         io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
1903         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
1904
1905         cmd->scmd = scp;
1906         scp->SCp.ptr = (char *)cmd;
1907
1908         return 0;
1909 }
1910
1911 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
1912 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
1913 {
1914         u8 *p;
1915         struct fusion_context *fusion;
1916
1917         if (index >= instance->max_fw_cmds) {
1918                 printk(KERN_ERR "megasas: Invalid SMID (0x%x)request for "
1919                        "descriptor for scsi%d\n", index,
1920                         instance->host->host_no);
1921                 return NULL;
1922         }
1923         fusion = instance->ctrl_context;
1924         p = fusion->req_frames_desc
1925                 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
1926
1927         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
1928 }
1929
1930 /**
1931  * megasas_build_and_issue_cmd_fusion -Main routine for building and
1932  *                                     issuing non IOCTL cmd
1933  * @instance:                   Adapter soft state
1934  * @scmd:                       pointer to scsi cmd from OS
1935  */
1936 static u32
1937 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
1938                                    struct scsi_cmnd *scmd)
1939 {
1940         struct megasas_cmd_fusion *cmd;
1941         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1942         u32 index;
1943         struct fusion_context *fusion;
1944
1945         fusion = instance->ctrl_context;
1946
1947         cmd = megasas_get_cmd_fusion(instance);
1948         if (!cmd)
1949                 return SCSI_MLQUEUE_HOST_BUSY;
1950
1951         index = cmd->index;
1952
1953         req_desc = megasas_get_request_descriptor(instance, index-1);
1954         if (!req_desc)
1955                 return 1;
1956
1957         req_desc->Words = 0;
1958         cmd->request_desc = req_desc;
1959
1960         if (megasas_build_io_fusion(instance, scmd, cmd)) {
1961                 megasas_return_cmd_fusion(instance, cmd);
1962                 printk(KERN_ERR "megasas: Error building command.\n");
1963                 cmd->request_desc = NULL;
1964                 return 1;
1965         }
1966
1967         req_desc = cmd->request_desc;
1968         req_desc->SCSIIO.SMID = cpu_to_le16(index);
1969
1970         if (cmd->io_request->ChainOffset != 0 &&
1971             cmd->io_request->ChainOffset != 0xF)
1972                 printk(KERN_ERR "megasas: The chain offset value is not "
1973                        "correct : %x\n", cmd->io_request->ChainOffset);
1974
1975         /*
1976          * Issue the command to the FW
1977          */
1978         atomic_inc(&instance->fw_outstanding);
1979
1980         instance->instancet->fire_cmd(instance,
1981                                       req_desc->u.low, req_desc->u.high,
1982                                       instance->reg_set);
1983
1984         return 0;
1985 }
1986
1987 /**
1988  * complete_cmd_fusion -        Completes command
1989  * @instance:                   Adapter soft state
1990  * Completes all commands that is in reply descriptor queue
1991  */
1992 int
1993 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
1994 {
1995         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
1996         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
1997         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
1998         struct fusion_context *fusion;
1999         struct megasas_cmd *cmd_mfi;
2000         struct megasas_cmd_fusion *cmd_fusion;
2001         u16 smid, num_completed;
2002         u8 reply_descript_type;
2003         u32 status, extStatus, device_id;
2004         union desc_value d_val;
2005         struct LD_LOAD_BALANCE_INFO *lbinfo;
2006         int threshold_reply_count = 0;
2007
2008         fusion = instance->ctrl_context;
2009
2010         if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
2011                 return IRQ_HANDLED;
2012
2013         desc = fusion->reply_frames_desc;
2014         desc += ((MSIxIndex * fusion->reply_alloc_sz)/
2015                  sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)) +
2016                 fusion->last_reply_idx[MSIxIndex];
2017
2018         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2019
2020         d_val.word = desc->Words;
2021
2022         reply_descript_type = reply_desc->ReplyFlags &
2023                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2024
2025         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2026                 return IRQ_NONE;
2027
2028         num_completed = 0;
2029
2030         while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
2031                 smid = le16_to_cpu(reply_desc->SMID);
2032
2033                 cmd_fusion = fusion->cmd_list[smid - 1];
2034
2035                 scsi_io_req =
2036                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
2037                   cmd_fusion->io_request;
2038
2039                 if (cmd_fusion->scmd)
2040                         cmd_fusion->scmd->SCp.ptr = NULL;
2041
2042                 status = scsi_io_req->RaidContext.status;
2043                 extStatus = scsi_io_req->RaidContext.exStatus;
2044
2045                 switch (scsi_io_req->Function) {
2046                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
2047                         /* Update load balancing info */
2048                         device_id = MEGASAS_DEV_INDEX(cmd_fusion->scmd);
2049                         lbinfo = &fusion->load_balance_info[device_id];
2050                         if (cmd_fusion->scmd->SCp.Status &
2051                             MEGASAS_LOAD_BALANCE_FLAG) {
2052                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
2053                                 cmd_fusion->scmd->SCp.Status &=
2054                                         ~MEGASAS_LOAD_BALANCE_FLAG;
2055                         }
2056                         if (reply_descript_type ==
2057                             MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
2058                                 if (megasas_dbg_lvl == 5)
2059                                         printk(KERN_ERR "\nmegasas: FAST Path "
2060                                                "IO Success\n");
2061                         }
2062                         /* Fall thru and complete IO */
2063                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
2064                         /* Map the FW Cmd Status */
2065                         map_cmd_status(cmd_fusion, status, extStatus);
2066                         scsi_dma_unmap(cmd_fusion->scmd);
2067                         cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2068                         scsi_io_req->RaidContext.status = 0;
2069                         scsi_io_req->RaidContext.exStatus = 0;
2070                         megasas_return_cmd_fusion(instance, cmd_fusion);
2071                         atomic_dec(&instance->fw_outstanding);
2072
2073                         break;
2074                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
2075                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2076
2077                         if (!cmd_mfi->mpt_pthr_cmd_blocked) {
2078                                 if (megasas_dbg_lvl == 5)
2079                                         dev_info(&instance->pdev->dev,
2080                                                 "freeing mfi/mpt pass-through "
2081                                                 "from %s %d\n",
2082                                                  __func__, __LINE__);
2083                                 megasas_return_mfi_mpt_pthr(instance, cmd_mfi,
2084                                         cmd_fusion);
2085                         }
2086
2087                         megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2088                         cmd_fusion->flags = 0;
2089                         break;
2090                 }
2091
2092                 fusion->last_reply_idx[MSIxIndex]++;
2093                 if (fusion->last_reply_idx[MSIxIndex] >=
2094                     fusion->reply_q_depth)
2095                         fusion->last_reply_idx[MSIxIndex] = 0;
2096
2097                 desc->Words = ULLONG_MAX;
2098                 num_completed++;
2099                 threshold_reply_count++;
2100
2101                 /* Get the next reply descriptor */
2102                 if (!fusion->last_reply_idx[MSIxIndex])
2103                         desc = fusion->reply_frames_desc +
2104                                 ((MSIxIndex * fusion->reply_alloc_sz)/
2105                                  sizeof(union MPI2_REPLY_DESCRIPTORS_UNION));
2106                 else
2107                         desc++;
2108
2109                 reply_desc =
2110                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2111
2112                 d_val.word = desc->Words;
2113
2114                 reply_descript_type = reply_desc->ReplyFlags &
2115                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2116
2117                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2118                         break;
2119                 /*
2120                  * Write to reply post host index register after completing threshold
2121                  * number of reply counts and still there are more replies in reply queue
2122                  * pending to be completed
2123                  */
2124                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
2125                         if ((instance->pdev->device ==
2126                                 PCI_DEVICE_ID_LSI_INVADER) ||
2127                                 (instance->pdev->device ==
2128                                 PCI_DEVICE_ID_LSI_FURY))
2129                                 writel(((MSIxIndex & 0x7) << 24) |
2130                                         fusion->last_reply_idx[MSIxIndex],
2131                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
2132                         else
2133                                 writel((MSIxIndex << 24) |
2134                                         fusion->last_reply_idx[MSIxIndex],
2135                                         instance->reply_post_host_index_addr[0]);
2136                         threshold_reply_count = 0;
2137                 }
2138         }
2139
2140         if (!num_completed)
2141                 return IRQ_NONE;
2142
2143         wmb();
2144         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2145                 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
2146                 writel(((MSIxIndex & 0x7) << 24) |
2147                         fusion->last_reply_idx[MSIxIndex],
2148                         instance->reply_post_host_index_addr[MSIxIndex/8]);
2149         else
2150                 writel((MSIxIndex << 24) |
2151                         fusion->last_reply_idx[MSIxIndex],
2152                         instance->reply_post_host_index_addr[0]);
2153         megasas_check_and_restore_queue_depth(instance);
2154         return IRQ_HANDLED;
2155 }
2156
2157 /**
2158  * megasas_complete_cmd_dpc_fusion -    Completes command
2159  * @instance:                   Adapter soft state
2160  *
2161  * Tasklet to complete cmds
2162  */
2163 void
2164 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
2165 {
2166         struct megasas_instance *instance =
2167                 (struct megasas_instance *)instance_addr;
2168         unsigned long flags;
2169         u32 count, MSIxIndex;
2170
2171         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2172
2173         /* If we have already declared adapter dead, donot complete cmds */
2174         spin_lock_irqsave(&instance->hba_lock, flags);
2175         if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2176                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2177                 return;
2178         }
2179         spin_unlock_irqrestore(&instance->hba_lock, flags);
2180
2181         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
2182                 complete_cmd_fusion(instance, MSIxIndex);
2183 }
2184
2185 /**
2186  * megasas_isr_fusion - isr entry point
2187  */
2188 irqreturn_t megasas_isr_fusion(int irq, void *devp)
2189 {
2190         struct megasas_irq_context *irq_context = devp;
2191         struct megasas_instance *instance = irq_context->instance;
2192         u32 mfiStatus, fw_state, dma_state;
2193
2194         if (instance->mask_interrupts)
2195                 return IRQ_NONE;
2196
2197         if (!instance->msix_vectors) {
2198                 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
2199                 if (!mfiStatus)
2200                         return IRQ_NONE;
2201         }
2202
2203         /* If we are resetting, bail */
2204         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
2205                 instance->instancet->clear_intr(instance->reg_set);
2206                 return IRQ_HANDLED;
2207         }
2208
2209         if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
2210                 instance->instancet->clear_intr(instance->reg_set);
2211                 /* If we didn't complete any commands, check for FW fault */
2212                 fw_state = instance->instancet->read_fw_status_reg(
2213                         instance->reg_set) & MFI_STATE_MASK;
2214                 dma_state = instance->instancet->read_fw_status_reg
2215                         (instance->reg_set) & MFI_STATE_DMADONE;
2216                 if (instance->crash_dump_drv_support &&
2217                         instance->crash_dump_app_support) {
2218                         /* Start collecting crash, if DMA bit is done */
2219                         if ((fw_state == MFI_STATE_FAULT) && dma_state)
2220                                 schedule_work(&instance->crash_init);
2221                         else if (fw_state == MFI_STATE_FAULT)
2222                                 schedule_work(&instance->work_init);
2223                 } else if (fw_state == MFI_STATE_FAULT) {
2224                         printk(KERN_WARNING "megaraid_sas: Iop2SysDoorbellInt"
2225                                "for scsi%d\n", instance->host->host_no);
2226                         schedule_work(&instance->work_init);
2227                 }
2228         }
2229
2230         return IRQ_HANDLED;
2231 }
2232
2233 /**
2234  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
2235  * @instance:                   Adapter soft state
2236  * mfi_cmd:                     megasas_cmd pointer
2237  *
2238  */
2239 u8
2240 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
2241                         struct megasas_cmd *mfi_cmd)
2242 {
2243         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
2244         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
2245         struct megasas_cmd_fusion *cmd;
2246         struct fusion_context *fusion;
2247         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
2248         u32 opcode;
2249
2250         cmd = megasas_get_cmd_fusion(instance);
2251         if (!cmd)
2252                 return 1;
2253
2254         /*  Save the smid. To be used for returning the cmd */
2255         mfi_cmd->context.smid = cmd->index;
2256         cmd->sync_cmd_idx = mfi_cmd->index;
2257
2258         /* Set this only for Blocked commands */
2259         opcode = le32_to_cpu(mfi_cmd->frame->dcmd.opcode);
2260         if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2261                 && (mfi_cmd->frame->dcmd.mbox.b[1] == 1))
2262                 mfi_cmd->is_wait_event = 1;
2263
2264         if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
2265                 mfi_cmd->is_wait_event = 1;
2266
2267         if (mfi_cmd->is_wait_event)
2268                 mfi_cmd->mpt_pthr_cmd_blocked = cmd;
2269
2270         /*
2271          * For cmds where the flag is set, store the flag and check
2272          * on completion. For cmds with this flag, don't call
2273          * megasas_complete_cmd
2274          */
2275
2276         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
2277                 cmd->flags = MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
2278
2279         fusion = instance->ctrl_context;
2280         io_req = cmd->io_request;
2281
2282         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2283                 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
2284                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
2285                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
2286                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2287                 sgl_ptr_end->Flags = 0;
2288         }
2289
2290         mpi25_ieee_chain =
2291           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
2292
2293         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
2294         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
2295                                        SGL) / 4;
2296         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
2297
2298         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
2299
2300         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2301                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
2302
2303         mpi25_ieee_chain->Length = cpu_to_le32(MEGASAS_MAX_SZ_CHAIN_FRAME);
2304
2305         return 0;
2306 }
2307
2308 /**
2309  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
2310  * @instance:                   Adapter soft state
2311  * @cmd:                        mfi cmd to build
2312  *
2313  */
2314 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2315 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
2316 {
2317         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2318         u16 index;
2319
2320         if (build_mpt_mfi_pass_thru(instance, cmd)) {
2321                 printk(KERN_ERR "Couldn't build MFI pass thru cmd\n");
2322                 return NULL;
2323         }
2324
2325         index = cmd->context.smid;
2326
2327         req_desc = megasas_get_request_descriptor(instance, index - 1);
2328
2329         if (!req_desc)
2330                 return NULL;
2331
2332         req_desc->Words = 0;
2333         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2334                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2335
2336         req_desc->SCSIIO.SMID = cpu_to_le16(index);
2337
2338         return req_desc;
2339 }
2340
2341 /**
2342  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
2343  * @instance:                   Adapter soft state
2344  * @cmd:                        mfi cmd pointer
2345  *
2346  */
2347 void
2348 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
2349                           struct megasas_cmd *cmd)
2350 {
2351         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2352
2353         req_desc = build_mpt_cmd(instance, cmd);
2354         if (!req_desc) {
2355                 printk(KERN_ERR "Couldn't issue MFI pass thru cmd\n");
2356                 return;
2357         }
2358         atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_ATTACHED);
2359         instance->instancet->fire_cmd(instance, req_desc->u.low,
2360                                       req_desc->u.high, instance->reg_set);
2361 }
2362
2363 /**
2364  * megasas_release_fusion -     Reverses the FW initialization
2365  * @intance:                    Adapter soft state
2366  */
2367 void
2368 megasas_release_fusion(struct megasas_instance *instance)
2369 {
2370         megasas_free_cmds(instance);
2371         megasas_free_cmds_fusion(instance);
2372
2373         iounmap(instance->reg_set);
2374
2375         pci_release_selected_regions(instance->pdev, instance->bar);
2376 }
2377
2378 /**
2379  * megasas_read_fw_status_reg_fusion - returns the current FW status value
2380  * @regs:                       MFI register set
2381  */
2382 static u32
2383 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
2384 {
2385         return readl(&(regs)->outbound_scratch_pad);
2386 }
2387
2388 /**
2389  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
2390  * @instance:                           Controller's soft instance
2391  * return:                              Number of allocated host crash buffers
2392  */
2393 static void
2394 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
2395 {
2396         unsigned int i;
2397
2398         instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE);
2399         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
2400                 instance->crash_buf[i] = (void  *)__get_free_pages(GFP_KERNEL,
2401                                 instance->crash_buf_pages);
2402                 if (!instance->crash_buf[i]) {
2403                         dev_info(&instance->pdev->dev, "Firmware crash dump "
2404                                 "memory allocation failed at index %d\n", i);
2405                         break;
2406                 }
2407                 memset(instance->crash_buf[i], 0,
2408                         ((1 << PAGE_SHIFT) << instance->crash_buf_pages));
2409         }
2410         instance->drv_buf_alloc = i;
2411 }
2412
2413 /**
2414  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
2415  * @instance:                           Controller's soft instance
2416  */
2417 void
2418 megasas_free_host_crash_buffer(struct megasas_instance *instance)
2419 {
2420         unsigned int i
2421 ;
2422         for (i = 0; i < instance->drv_buf_alloc; i++) {
2423                 if (instance->crash_buf[i])
2424                         free_pages((ulong)instance->crash_buf[i],
2425                                         instance->crash_buf_pages);
2426         }
2427         instance->drv_buf_index = 0;
2428         instance->drv_buf_alloc = 0;
2429         instance->fw_crash_state = UNAVAILABLE;
2430         instance->fw_crash_buffer_size = 0;
2431 }
2432
2433 /**
2434  * megasas_adp_reset_fusion -   For controller reset
2435  * @regs:                               MFI register set
2436  */
2437 static int
2438 megasas_adp_reset_fusion(struct megasas_instance *instance,
2439                          struct megasas_register_set __iomem *regs)
2440 {
2441         return 0;
2442 }
2443
2444 /**
2445  * megasas_check_reset_fusion - For controller reset check
2446  * @regs:                               MFI register set
2447  */
2448 static int
2449 megasas_check_reset_fusion(struct megasas_instance *instance,
2450                            struct megasas_register_set __iomem *regs)
2451 {
2452         return 0;
2453 }
2454
2455 /* This function waits for outstanding commands on fusion to complete */
2456 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
2457                                         int iotimeout, int *convert)
2458 {
2459         int i, outstanding, retval = 0, hb_seconds_missed = 0;
2460         u32 fw_state;
2461
2462         for (i = 0; i < resetwaittime; i++) {
2463                 /* Check if firmware is in fault state */
2464                 fw_state = instance->instancet->read_fw_status_reg(
2465                         instance->reg_set) & MFI_STATE_MASK;
2466                 if (fw_state == MFI_STATE_FAULT) {
2467                         printk(KERN_WARNING "megasas: Found FW in FAULT state,"
2468                                " will reset adapter scsi%d.\n",
2469                                 instance->host->host_no);
2470                         retval = 1;
2471                         goto out;
2472                 }
2473                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
2474                 if (instance->requestorId && !iotimeout) {
2475                         retval = 1;
2476                         goto out;
2477                 }
2478
2479                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
2480                 if (instance->requestorId && iotimeout) {
2481                         if (instance->hb_host_mem->HB.fwCounter !=
2482                             instance->hb_host_mem->HB.driverCounter) {
2483                                 instance->hb_host_mem->HB.driverCounter =
2484                                         instance->hb_host_mem->HB.fwCounter;
2485                                 hb_seconds_missed = 0;
2486                         } else {
2487                                 hb_seconds_missed++;
2488                                 if (hb_seconds_missed ==
2489                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
2490                                         printk(KERN_WARNING "megasas: SR-IOV:"
2491                                                " Heartbeat never completed "
2492                                                " while polling during I/O "
2493                                                " timeout handling for "
2494                                                "scsi%d.\n",
2495                                                instance->host->host_no);
2496                                                *convert = 1;
2497                                                retval = 1;
2498                                                goto out;
2499                                 }
2500                         }
2501                 }
2502
2503                 outstanding = atomic_read(&instance->fw_outstanding);
2504                 if (!outstanding)
2505                         goto out;
2506
2507                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2508                         printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2509                                "commands to complete for scsi%d\n", i,
2510                                outstanding, instance->host->host_no);
2511                         megasas_complete_cmd_dpc_fusion(
2512                                 (unsigned long)instance);
2513                 }
2514                 msleep(1000);
2515         }
2516
2517         if (atomic_read(&instance->fw_outstanding)) {
2518                 printk("megaraid_sas: pending commands remain after waiting, "
2519                        "will reset adapter scsi%d.\n",
2520                        instance->host->host_no);
2521                 retval = 1;
2522         }
2523 out:
2524         return retval;
2525 }
2526
2527 void  megasas_reset_reply_desc(struct megasas_instance *instance)
2528 {
2529         int i, count;
2530         struct fusion_context *fusion;
2531         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2532
2533         fusion = instance->ctrl_context;
2534         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2535         for (i = 0 ; i < count ; i++)
2536                 fusion->last_reply_idx[i] = 0;
2537         reply_desc = fusion->reply_frames_desc;
2538         for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
2539                 reply_desc->Words = ULLONG_MAX;
2540 }
2541
2542 /*
2543  * megasas_refire_mgmt_cmd :    Re-fire management commands
2544  * @instance:                           Controller's soft instance
2545 */
2546 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
2547 {
2548         int j;
2549         struct megasas_cmd_fusion *cmd_fusion;
2550         struct fusion_context *fusion;
2551         struct megasas_cmd *cmd_mfi;
2552         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2553         u16 smid;
2554
2555         fusion = instance->ctrl_context;
2556
2557         /* Re-fire management commands.
2558          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
2559          */
2560         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
2561                 cmd_fusion = fusion->cmd_list[j];
2562                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2563                 smid = le16_to_cpu(cmd_mfi->context.smid);
2564
2565                 if (!smid)
2566                         continue;
2567                 req_desc = megasas_get_request_descriptor
2568                                         (instance, smid - 1);
2569                 if (req_desc && (cmd_mfi->frame->dcmd.opcode !=
2570                                 cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO))) {
2571                         instance->instancet->fire_cmd(instance,
2572                                 req_desc->u.low, req_desc->u.high,
2573                                 instance->reg_set);
2574                 } else
2575                         megasas_return_cmd(instance, cmd_mfi);
2576         }
2577 }
2578
2579 /* Check for a second path that is currently UP */
2580 int megasas_check_mpio_paths(struct megasas_instance *instance,
2581         struct scsi_cmnd *scmd)
2582 {
2583         int i, j, retval = (DID_RESET << 16);
2584
2585         if (instance->mpio && instance->requestorId) {
2586                 for (i = 0 ; i < MAX_MGMT_ADAPTERS ; i++)
2587                         for (j = 0 ; j < MAX_LOGICAL_DRIVES; j++)
2588                                 if (megasas_mgmt_info.instance[i] &&
2589                                     (megasas_mgmt_info.instance[i] != instance) &&
2590                                     megasas_mgmt_info.instance[i]->mpio &&
2591                                     megasas_mgmt_info.instance[i]->requestorId
2592                                     &&
2593                                     (megasas_mgmt_info.instance[i]->ld_ids[j]
2594                                      == scmd->device->id)) {
2595                                             retval = (DID_NO_CONNECT << 16);
2596                                             goto out;
2597                                 }
2598         }
2599 out:
2600         return retval;
2601 }
2602
2603 /* Core fusion reset function */
2604 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout)
2605 {
2606         int retval = SUCCESS, i, retry = 0, convert = 0;
2607         struct megasas_instance *instance;
2608         struct megasas_cmd_fusion *cmd_fusion;
2609         struct fusion_context *fusion;
2610         u32 host_diag, abs_state, status_reg, reset_adapter;
2611         u32 io_timeout_in_crash_mode = 0;
2612
2613         instance = (struct megasas_instance *)shost->hostdata;
2614         fusion = instance->ctrl_context;
2615
2616         mutex_lock(&instance->reset_mutex);
2617
2618         if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2619                 printk(KERN_WARNING "megaraid_sas: Hardware critical error, "
2620                        "returning FAILED for scsi%d.\n",
2621                         instance->host->host_no);
2622                 mutex_unlock(&instance->reset_mutex);
2623                 return FAILED;
2624         }
2625         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
2626         abs_state = status_reg & MFI_STATE_MASK;
2627
2628         /* IO timeout detected, forcibly put FW in FAULT state */
2629         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
2630                 instance->crash_dump_app_support && iotimeout) {
2631                 dev_info(&instance->pdev->dev, "IO timeout is detected, "
2632                         "forcibly FAULT Firmware\n");
2633                 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2634                 status_reg = readl(&instance->reg_set->doorbell);
2635                 writel(status_reg | MFI_STATE_FORCE_OCR,
2636                         &instance->reg_set->doorbell);
2637                 readl(&instance->reg_set->doorbell);
2638                 mutex_unlock(&instance->reset_mutex);
2639                 do {
2640                         ssleep(3);
2641                         io_timeout_in_crash_mode++;
2642                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
2643                                 "seconds for crash dump collection and OCR "
2644                                 "to be done\n", (io_timeout_in_crash_mode * 3));
2645                 } while ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
2646                         (io_timeout_in_crash_mode < 80));
2647
2648                 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
2649                         dev_info(&instance->pdev->dev, "OCR done for IO "
2650                                 "timeout case\n");
2651                         retval = SUCCESS;
2652                 } else {
2653                         dev_info(&instance->pdev->dev, "Controller is not "
2654                                 "operational after 240 seconds wait for IO "
2655                                 "timeout case in FW crash dump mode\n do "
2656                                 "OCR/kill adapter\n");
2657                         retval = megasas_reset_fusion(shost, 0);
2658                 }
2659                 return retval;
2660         }
2661
2662         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
2663                 del_timer_sync(&instance->sriov_heartbeat_timer);
2664         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2665         instance->adprecovery = MEGASAS_ADPRESET_SM_POLLING;
2666         instance->instancet->disable_intr(instance);
2667         msleep(1000);
2668
2669         /* First try waiting for commands to complete */
2670         if (megasas_wait_for_outstanding_fusion(instance, iotimeout,
2671                                                 &convert)) {
2672                 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2673                 printk(KERN_WARNING "megaraid_sas: resetting fusion "
2674                        "adapter scsi%d.\n", instance->host->host_no);
2675                 if (convert)
2676                         iotimeout = 0;
2677
2678                 /* Now return commands back to the OS */
2679                 for (i = 0 ; i < instance->max_fw_cmds; i++) {
2680                         cmd_fusion = fusion->cmd_list[i];
2681                         if (cmd_fusion->scmd) {
2682                                 scsi_dma_unmap(cmd_fusion->scmd);
2683                                 cmd_fusion->scmd->result =
2684                                         megasas_check_mpio_paths(instance,
2685                                                                  cmd_fusion->scmd);
2686                                 cmd_fusion->scmd->scsi_done(cmd_fusion->scmd);
2687                                 megasas_return_cmd_fusion(instance, cmd_fusion);
2688                                 atomic_dec(&instance->fw_outstanding);
2689                         }
2690                 }
2691
2692                 status_reg = instance->instancet->read_fw_status_reg(
2693                         instance->reg_set);
2694                 abs_state = status_reg & MFI_STATE_MASK;
2695                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
2696                 if (instance->disableOnlineCtrlReset ||
2697                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
2698                         /* Reset not supported, kill adapter */
2699                         printk(KERN_WARNING "megaraid_sas: Reset not supported"
2700                                ", killing adapter scsi%d.\n",
2701                                 instance->host->host_no);
2702                         megaraid_sas_kill_hba(instance);
2703                         instance->skip_heartbeat_timer_del = 1;
2704                         retval = FAILED;
2705                         goto out;
2706                 }
2707
2708                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
2709                 if (instance->requestorId && !iotimeout) {
2710                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
2711                         /* Look for a late HB update after VF settle time */
2712                         if (abs_state == MFI_STATE_OPERATIONAL &&
2713                             (instance->hb_host_mem->HB.fwCounter !=
2714                              instance->hb_host_mem->HB.driverCounter)) {
2715                                         instance->hb_host_mem->HB.driverCounter =
2716                                                 instance->hb_host_mem->HB.fwCounter;
2717                                         printk(KERN_WARNING "megasas: SR-IOV:"
2718                                                "Late FW heartbeat update for "
2719                                                "scsi%d.\n",
2720                                                instance->host->host_no);
2721                         } else {
2722                                 /* In VF mode, first poll for FW ready */
2723                                 for (i = 0;
2724                                      i < (MEGASAS_RESET_WAIT_TIME * 1000);
2725                                      i += 20) {
2726                                         status_reg =
2727                                                 instance->instancet->
2728                                                 read_fw_status_reg(
2729                                                         instance->reg_set);
2730                                         abs_state = status_reg &
2731                                                 MFI_STATE_MASK;
2732                                         if (abs_state == MFI_STATE_READY) {
2733                                                 printk(KERN_WARNING "megasas"
2734                                                        ": SR-IOV: FW was found"
2735                                                        "to be in ready state "
2736                                                        "for scsi%d.\n",
2737                                                        instance->host->host_no);
2738                                                 break;
2739                                         }
2740                                         msleep(20);
2741                                 }
2742                                 if (abs_state != MFI_STATE_READY) {
2743                                         printk(KERN_WARNING "megasas: SR-IOV: "
2744                                                "FW not in ready state after %d"
2745                                                " seconds for scsi%d, status_reg = "
2746                                                "0x%x.\n",
2747                                                MEGASAS_RESET_WAIT_TIME,
2748                                                instance->host->host_no,
2749                                                status_reg);
2750                                         megaraid_sas_kill_hba(instance);
2751                                         instance->skip_heartbeat_timer_del = 1;
2752                                         instance->adprecovery =
2753                                                 MEGASAS_HW_CRITICAL_ERROR;
2754                                         retval = FAILED;
2755                                         goto out;
2756                                 }
2757                         }
2758                 }
2759
2760                 /* Now try to reset the chip */
2761                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
2762                         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE,
2763                                &instance->reg_set->fusion_seq_offset);
2764                         writel(MPI2_WRSEQ_1ST_KEY_VALUE,
2765                                &instance->reg_set->fusion_seq_offset);
2766                         writel(MPI2_WRSEQ_2ND_KEY_VALUE,
2767                                &instance->reg_set->fusion_seq_offset);
2768                         writel(MPI2_WRSEQ_3RD_KEY_VALUE,
2769                                &instance->reg_set->fusion_seq_offset);
2770                         writel(MPI2_WRSEQ_4TH_KEY_VALUE,
2771                                &instance->reg_set->fusion_seq_offset);
2772                         writel(MPI2_WRSEQ_5TH_KEY_VALUE,
2773                                &instance->reg_set->fusion_seq_offset);
2774                         writel(MPI2_WRSEQ_6TH_KEY_VALUE,
2775                                &instance->reg_set->fusion_seq_offset);
2776
2777                         /* Check that the diag write enable (DRWE) bit is on */
2778                         host_diag = readl(&instance->reg_set->fusion_host_diag);
2779                         retry = 0;
2780                         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2781                                 msleep(100);
2782                                 host_diag =
2783                                 readl(&instance->reg_set->fusion_host_diag);
2784                                 if (retry++ == 100) {
2785                                         printk(KERN_WARNING "megaraid_sas: "
2786                                                "Host diag unlock failed! "
2787                                                "for scsi%d\n",
2788                                                 instance->host->host_no);
2789                                         break;
2790                                 }
2791                         }
2792                         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2793                                 continue;
2794
2795                         /* Send chip reset command */
2796                         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2797                                &instance->reg_set->fusion_host_diag);
2798                         msleep(3000);
2799
2800                         /* Make sure reset adapter bit is cleared */
2801                         host_diag = readl(&instance->reg_set->fusion_host_diag);
2802                         retry = 0;
2803                         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2804                                 msleep(100);
2805                                 host_diag =
2806                                 readl(&instance->reg_set->fusion_host_diag);
2807                                 if (retry++ == 1000) {
2808                                         printk(KERN_WARNING "megaraid_sas: "
2809                                                "Diag reset adapter never "
2810                                                "cleared for scsi%d!\n",
2811                                                 instance->host->host_no);
2812                                         break;
2813                                 }
2814                         }
2815                         if (host_diag & HOST_DIAG_RESET_ADAPTER)
2816                                 continue;
2817
2818                         abs_state =
2819                                 instance->instancet->read_fw_status_reg(
2820                                         instance->reg_set) & MFI_STATE_MASK;
2821                         retry = 0;
2822
2823                         while ((abs_state <= MFI_STATE_FW_INIT) &&
2824                                (retry++ < 1000)) {
2825                                 msleep(100);
2826                                 abs_state =
2827                                 instance->instancet->read_fw_status_reg(
2828                                         instance->reg_set) & MFI_STATE_MASK;
2829                         }
2830                         if (abs_state <= MFI_STATE_FW_INIT) {
2831                                 printk(KERN_WARNING "megaraid_sas: firmware "
2832                                        "state < MFI_STATE_FW_INIT, state = "
2833                                        "0x%x for scsi%d\n", abs_state,
2834                                         instance->host->host_no);
2835                                 continue;
2836                         }
2837
2838                         /* Wait for FW to become ready */
2839                         if (megasas_transition_to_ready(instance, 1)) {
2840                                 printk(KERN_WARNING "megaraid_sas: Failed to "
2841                                        "transition controller to ready "
2842                                        "for scsi%d.\n",
2843                                        instance->host->host_no);
2844                                 continue;
2845                         }
2846
2847                         megasas_reset_reply_desc(instance);
2848                         if (megasas_ioc_init_fusion(instance)) {
2849                                 printk(KERN_WARNING "megaraid_sas: "
2850                                        "megasas_ioc_init_fusion() failed!"
2851                                        " for scsi%d\n",
2852                                        instance->host->host_no);
2853                                 continue;
2854                         }
2855
2856                         megasas_refire_mgmt_cmd(instance);
2857
2858                         if (megasas_get_ctrl_info(instance)) {
2859                                 dev_info(&instance->pdev->dev,
2860                                         "Failed from %s %d\n",
2861                                         __func__, __LINE__);
2862                                 megaraid_sas_kill_hba(instance);
2863                                 retval = FAILED;
2864                         }
2865                         /* Reset load balance info */
2866                         memset(fusion->load_balance_info, 0,
2867                                sizeof(struct LD_LOAD_BALANCE_INFO)
2868                                *MAX_LOGICAL_DRIVES_EXT);
2869
2870                         if (!megasas_get_map_info(instance))
2871                                 megasas_sync_map_info(instance);
2872
2873                         clear_bit(MEGASAS_FUSION_IN_RESET,
2874                                   &instance->reset_flags);
2875                         instance->instancet->enable_intr(instance);
2876                         instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2877
2878                         /* Restart SR-IOV heartbeat */
2879                         if (instance->requestorId) {
2880                                 if (!megasas_sriov_start_heartbeat(instance, 0))
2881                                         megasas_start_timer(instance,
2882                                                             &instance->sriov_heartbeat_timer,
2883                                                             megasas_sriov_heartbeat_handler,
2884                                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2885                                 else
2886                                         instance->skip_heartbeat_timer_del = 1;
2887                         }
2888
2889                         /* Adapter reset completed successfully */
2890                         printk(KERN_WARNING "megaraid_sas: Reset "
2891                                "successful for scsi%d.\n",
2892                                 instance->host->host_no);
2893
2894                         if (instance->crash_dump_drv_support &&
2895                                 instance->crash_dump_app_support)
2896                                 megasas_set_crash_dump_params(instance,
2897                                         MR_CRASH_BUF_TURN_ON);
2898                         else
2899                                 megasas_set_crash_dump_params(instance,
2900                                         MR_CRASH_BUF_TURN_OFF);
2901
2902                         retval = SUCCESS;
2903                         goto out;
2904                 }
2905                 /* Reset failed, kill the adapter */
2906                 printk(KERN_WARNING "megaraid_sas: Reset failed, killing "
2907                        "adapter scsi%d.\n", instance->host->host_no);
2908                 megaraid_sas_kill_hba(instance);
2909                 instance->skip_heartbeat_timer_del = 1;
2910                 retval = FAILED;
2911         } else {
2912                 /* For VF: Restart HB timer if we didn't OCR */
2913                 if (instance->requestorId) {
2914                         megasas_start_timer(instance,
2915                                             &instance->sriov_heartbeat_timer,
2916                                             megasas_sriov_heartbeat_handler,
2917                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2918                 }
2919                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2920                 instance->instancet->enable_intr(instance);
2921                 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2922         }
2923 out:
2924         clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
2925         mutex_unlock(&instance->reset_mutex);
2926         return retval;
2927 }
2928
2929 /* Fusion Crash dump collection work queue */
2930 void  megasas_fusion_crash_dump_wq(struct work_struct *work)
2931 {
2932         struct megasas_instance *instance =
2933                 container_of(work, struct megasas_instance, crash_init);
2934         u32 status_reg;
2935         u8 partial_copy = 0;
2936
2937
2938         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
2939
2940         /*
2941          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
2942          * to host crash buffers
2943          */
2944         if (instance->drv_buf_index == 0) {
2945                 /* Buffer is already allocated for old Crash dump.
2946                  * Do OCR and do not wait for crash dump collection
2947                  */
2948                 if (instance->drv_buf_alloc) {
2949                         dev_info(&instance->pdev->dev, "earlier crash dump is "
2950                                 "not yet copied by application, ignoring this "
2951                                 "crash dump and initiating OCR\n");
2952                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
2953                         writel(status_reg,
2954                                 &instance->reg_set->outbound_scratch_pad);
2955                         readl(&instance->reg_set->outbound_scratch_pad);
2956                         return;
2957                 }
2958                 megasas_alloc_host_crash_buffer(instance);
2959                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
2960                         "allocated: %d\n", instance->drv_buf_alloc);
2961         }
2962
2963         /*
2964          * Driver has allocated max buffers, which can be allocated
2965          * and FW has more crash dump data, then driver will
2966          * ignore the data.
2967          */
2968         if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
2969                 dev_info(&instance->pdev->dev, "Driver is done copying "
2970                         "the buffer: %d\n", instance->drv_buf_alloc);
2971                 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
2972                 partial_copy = 1;
2973         } else {
2974                 memcpy(instance->crash_buf[instance->drv_buf_index],
2975                         instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
2976                 instance->drv_buf_index++;
2977                 status_reg &= ~MFI_STATE_DMADONE;
2978         }
2979
2980         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
2981                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
2982                         "of copied buffers: %d\n", instance->drv_buf_index);
2983                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
2984                 instance->fw_crash_state = AVAILABLE;
2985                 instance->drv_buf_index = 0;
2986                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
2987                 readl(&instance->reg_set->outbound_scratch_pad);
2988                 if (!partial_copy)
2989                         megasas_reset_fusion(instance->host, 0);
2990         } else {
2991                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
2992                 readl(&instance->reg_set->outbound_scratch_pad);
2993         }
2994 }
2995
2996
2997 /* Fusion OCR work queue */
2998 void megasas_fusion_ocr_wq(struct work_struct *work)
2999 {
3000         struct megasas_instance *instance =
3001                 container_of(work, struct megasas_instance, work_init);
3002
3003         megasas_reset_fusion(instance->host, 0);
3004 }
3005
3006 struct megasas_instance_template megasas_instance_template_fusion = {
3007         .fire_cmd = megasas_fire_cmd_fusion,
3008         .enable_intr = megasas_enable_intr_fusion,
3009         .disable_intr = megasas_disable_intr_fusion,
3010         .clear_intr = megasas_clear_intr_fusion,
3011         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
3012         .adp_reset = megasas_adp_reset_fusion,
3013         .check_reset = megasas_check_reset_fusion,
3014         .service_isr = megasas_isr_fusion,
3015         .tasklet = megasas_complete_cmd_dpc_fusion,
3016         .init_adapter = megasas_init_adapter_fusion,
3017         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
3018         .issue_dcmd = megasas_issue_dcmd_fusion,
3019 };