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 #include <linux/dmi.h>
  57
  58 #include "megaraid_sas_fusion.h"
  59 #include "megaraid_sas.h"
  60
  61
  62 extern void megasas_free_cmds(struct megasas_instance *instance);
  63 extern struct megasas_cmd *megasas_get_cmd(struct megasas_instance
  64                                            *instance);
  65 extern void
  66 megasas_complete_cmd(struct megasas_instance *instance,
  67                      struct megasas_cmd *cmd, u8 alt_status);
  68 int
  69 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
  70               int seconds);
  71
  72 void
  73 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd);
  74 int megasas_alloc_cmds(struct megasas_instance *instance);
  75 int
  76 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs);
  77 int
  78 megasas_issue_polled(struct megasas_instance *instance,
  79                      struct megasas_cmd *cmd);
  80 void
  81 megasas_check_and_restore_queue_depth(struct megasas_instance *instance);
  82
  83 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
  84 void megaraid_sas_kill_hba(struct megasas_instance *instance);
  85
  86 extern u32 megasas_dbg_lvl;
  87 void megasas_sriov_heartbeat_handler(unsigned long instance_addr);
  88 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
  89                                   int initial);
  90 void megasas_start_timer(struct megasas_instance *instance,
  91                         struct timer_list *timer,
  92                          void *fn, unsigned long interval);
  93 extern struct megasas_mgmt_info megasas_mgmt_info;
  94 extern unsigned int resetwaittime;
  95 extern unsigned int dual_qdepth_disable;
  96 static void megasas_free_rdpq_fusion(struct megasas_instance *instance);
  97 static void megasas_free_reply_fusion(struct megasas_instance *instance);
  98
  99
 100
 101 /**
 102  * megasas_enable_intr_fusion - Enables interrupts
 103  * @regs:                       MFI register set
 104  */
 105 void
 106 megasas_enable_intr_fusion(struct megasas_instance *instance)
 107 {
 108         struct megasas_register_set __iomem *regs;
 109         regs = instance->reg_set;
 110
 111         instance->mask_interrupts = 0;
 112         /* For Thunderbolt/Invader also clear intr on enable */
 113         writel(~0, &regs->outbound_intr_status);
 114         readl(&regs->outbound_intr_status);
 115
 116         writel(~MFI_FUSION_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 117
 118         /* Dummy readl to force pci flush */
 119         readl(&regs->outbound_intr_mask);
 120 }
 121
 122 /**
 123  * megasas_disable_intr_fusion - Disables interrupt
 124  * @regs:                        MFI register set
 125  */
 126 void
 127 megasas_disable_intr_fusion(struct megasas_instance *instance)
 128 {
 129         u32 mask = 0xFFFFFFFF;
 130         u32 status;
 131         struct megasas_register_set __iomem *regs;
 132         regs = instance->reg_set;
 133         instance->mask_interrupts = 1;
 134
 135         writel(mask, &regs->outbound_intr_mask);
 136         /* Dummy readl to force pci flush */
 137         status = readl(&regs->outbound_intr_mask);
 138 }
 139
 140 int
 141 megasas_clear_intr_fusion(struct megasas_register_set __iomem *regs)
 142 {
 143         u32 status;
 144         /*
 145          * Check if it is our interrupt
 146          */
 147         status = readl(&regs->outbound_intr_status);
 148
 149         if (status & 1) {
 150                 writel(status, &regs->outbound_intr_status);
 151                 readl(&regs->outbound_intr_status);
 152                 return 1;
 153         }
 154         if (!(status & MFI_FUSION_ENABLE_INTERRUPT_MASK))
 155                 return 0;
 156
 157         return 1;
 158 }
 159
 160 /**
 161  * megasas_get_cmd_fusion -     Get a command from the free pool
 162  * @instance:           Adapter soft state
 163  *
 164  * Returns a blk_tag indexed mpt frame
 165  */
 166 inline struct megasas_cmd_fusion *megasas_get_cmd_fusion(struct megasas_instance
 167                                                   *instance, u32 blk_tag)
 168 {
 169         struct fusion_context *fusion;
 170
 171         fusion = instance->ctrl_context;
 172         return fusion->cmd_list[blk_tag];
 173 }
 174
 175 /**
 176  * megasas_return_cmd_fusion -  Return a cmd to free command pool
 177  * @instance:           Adapter soft state
 178  * @cmd:                Command packet to be returned to free command pool
 179  */
 180 inline void megasas_return_cmd_fusion(struct megasas_instance *instance,
 181         struct megasas_cmd_fusion *cmd)
 182 {
 183         cmd->scmd = NULL;
 184         memset(cmd->io_request, 0, sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 185 }
 186
 187 /**
 188  * megasas_fire_cmd_fusion -    Sends command to the FW
 189  */
 190 static void
 191 megasas_fire_cmd_fusion(struct megasas_instance *instance,
 192                 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc)
 193 {
 194 #if defined(writeq) && defined(CONFIG_64BIT)
 195         u64 req_data = (((u64)le32_to_cpu(req_desc->u.high) << 32) |
 196                         le32_to_cpu(req_desc->u.low));
 197
 198         writeq(req_data, &instance->reg_set->inbound_low_queue_port);
 199 #else
 200         unsigned long flags;
 201
 202         spin_lock_irqsave(&instance->hba_lock, flags);
 203         writel(le32_to_cpu(req_desc->u.low),
 204                 &instance->reg_set->inbound_low_queue_port);
 205         writel(le32_to_cpu(req_desc->u.high),
 206                 &instance->reg_set->inbound_high_queue_port);
 207         mmiowb();
 208         spin_unlock_irqrestore(&instance->hba_lock, flags);
 209 #endif
 210 }
 211
 212 /**
 213  * megasas_fusion_update_can_queue -    Do all Adapter Queue depth related calculations here
 214  * @instance:                                                   Adapter soft state
 215  * fw_boot_context:                                             Whether this function called during probe or after OCR
 216  *
 217  * This function is only for fusion controllers.
 218  * Update host can queue, if firmware downgrade max supported firmware commands.
 219  * Firmware upgrade case will be skiped because underlying firmware has
 220  * more resource than exposed to the OS.
 221  *
 222  */
 223 static void
 224 megasas_fusion_update_can_queue(struct megasas_instance *instance, int fw_boot_context)
 225 {
 226         u16 cur_max_fw_cmds = 0;
 227         u16 ldio_threshold = 0;
 228         struct megasas_register_set __iomem *reg_set;
 229
 230         reg_set = instance->reg_set;
 231
 232         cur_max_fw_cmds = readl(&instance->reg_set->outbound_scratch_pad_3) & 0x00FFFF;
 233
 234         if (dual_qdepth_disable || !cur_max_fw_cmds)
 235                 cur_max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
 236         else
 237                 ldio_threshold =
 238                         (instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF) - MEGASAS_FUSION_IOCTL_CMDS;
 239
 240         dev_info(&instance->pdev->dev,
 241                         "Current firmware maximum commands: %d\t LDIO threshold: %d\n",
 242                         cur_max_fw_cmds, ldio_threshold);
 243
 244         if (fw_boot_context == OCR_CONTEXT) {
 245                 cur_max_fw_cmds = cur_max_fw_cmds - 1;
 246                 if (cur_max_fw_cmds <= instance->max_fw_cmds) {
 247                         instance->cur_can_queue =
 248                                 cur_max_fw_cmds - (MEGASAS_FUSION_INTERNAL_CMDS +
 249                                                 MEGASAS_FUSION_IOCTL_CMDS);
 250                         instance->host->can_queue = instance->cur_can_queue;
 251                         instance->ldio_threshold = ldio_threshold;
 252                 }
 253         } else {
 254                 instance->max_fw_cmds = cur_max_fw_cmds;
 255                 instance->ldio_threshold = ldio_threshold;
 256
 257                 if (!instance->is_rdpq)
 258                         instance->max_fw_cmds = min_t(u16, instance->max_fw_cmds, 1024);
 259
 260                 if (reset_devices)
 261                         instance->max_fw_cmds = min(instance->max_fw_cmds,
 262                                                 (u16)MEGASAS_KDUMP_QUEUE_DEPTH);
 263                 /*
 264                 * Reduce the max supported cmds by 1. This is to ensure that the
 265                 * reply_q_sz (1 more than the max cmd that driver may send)
 266                 * does not exceed max cmds that the FW can support
 267                 */
 268                 instance->max_fw_cmds = instance->max_fw_cmds-1;
 269
 270                 instance->max_scsi_cmds = instance->max_fw_cmds -
 271                                 (MEGASAS_FUSION_INTERNAL_CMDS +
 272                                 MEGASAS_FUSION_IOCTL_CMDS);
 273                 instance->cur_can_queue = instance->max_scsi_cmds;
 274         }
 275 }
 276 /**
 277  * megasas_free_cmds_fusion -   Free all the cmds in the free cmd pool
 278  * @instance:           Adapter soft state
 279  */
 280 void
 281 megasas_free_cmds_fusion(struct megasas_instance *instance)
 282 {
 283         int i;
 284         struct fusion_context *fusion = instance->ctrl_context;
 285         struct megasas_cmd_fusion *cmd;
 286
 287         /* SG, Sense */
 288         for (i = 0; i < instance->max_fw_cmds; i++) {
 289                 cmd = fusion->cmd_list[i];
 290                 if (cmd) {
 291                         if (cmd->sg_frame)
 292                                 pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
 293                                       cmd->sg_frame_phys_addr);
 294                         if (cmd->sense)
 295                                 pci_pool_free(fusion->sense_dma_pool, cmd->sense,
 296                                       cmd->sense_phys_addr);
 297                 }
 298         }
 299
 300         if (fusion->sg_dma_pool) {
 301                 pci_pool_destroy(fusion->sg_dma_pool);
 302                 fusion->sg_dma_pool = NULL;
 303         }
 304         if (fusion->sense_dma_pool) {
 305                 pci_pool_destroy(fusion->sense_dma_pool);
 306                 fusion->sense_dma_pool = NULL;
 307         }
 308
 309
 310         /* Reply Frame, Desc*/
 311         if (instance->is_rdpq)
 312                 megasas_free_rdpq_fusion(instance);
 313         else
 314                 megasas_free_reply_fusion(instance);
 315
 316         /* Request Frame, Desc*/
 317         if (fusion->req_frames_desc)
 318                 dma_free_coherent(&instance->pdev->dev,
 319                         fusion->request_alloc_sz, fusion->req_frames_desc,
 320                         fusion->req_frames_desc_phys);
 321         if (fusion->io_request_frames)
 322                 pci_pool_free(fusion->io_request_frames_pool,
 323                         fusion->io_request_frames,
 324                         fusion->io_request_frames_phys);
 325         if (fusion->io_request_frames_pool) {
 326                 pci_pool_destroy(fusion->io_request_frames_pool);
 327                 fusion->io_request_frames_pool = NULL;
 328         }
 329
 330
 331         /* cmd_list */
 332         for (i = 0; i < instance->max_fw_cmds; i++)
 333                 kfree(fusion->cmd_list[i]);
 334
 335         kfree(fusion->cmd_list);
 336 }
 337
 338 /**
 339  * megasas_create_sg_sense_fusion -     Creates DMA pool for cmd frames
 340  * @instance:                   Adapter soft state
 341  *
 342  */
 343 static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
 344 {
 345         int i;
 346         u32 max_cmd;
 347         struct fusion_context *fusion;
 348         struct megasas_cmd_fusion *cmd;
 349
 350         fusion = instance->ctrl_context;
 351         max_cmd = instance->max_fw_cmds;
 352
 353
 354         fusion->sg_dma_pool =
 355                         pci_pool_create("mr_sg", instance->pdev,
 356                                 instance->max_chain_frame_sz, 4, 0);
 357         /* SCSI_SENSE_BUFFERSIZE  = 96 bytes */
 358         fusion->sense_dma_pool =
 359                         pci_pool_create("mr_sense", instance->pdev,
 360                                 SCSI_SENSE_BUFFERSIZE, 64, 0);
 361
 362         if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
 363                 dev_err(&instance->pdev->dev,
 364                         "Failed from %s %d\n",  __func__, __LINE__);
 365                 return -ENOMEM;
 366         }
 367
 368         /*
 369          * Allocate and attach a frame to each of the commands in cmd_list
 370          */
 371         for (i = 0; i < max_cmd; i++) {
 372                 cmd = fusion->cmd_list[i];
 373                 cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
 374                                         GFP_KERNEL, &cmd->sg_frame_phys_addr);
 375
 376                 cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
 377                                         GFP_KERNEL, &cmd->sense_phys_addr);
 378                 if (!cmd->sg_frame || !cmd->sense) {
 379                         dev_err(&instance->pdev->dev,
 380                                 "Failed from %s %d\n",  __func__, __LINE__);
 381                         return -ENOMEM;
 382                 }
 383         }
 384         return 0;
 385 }
 386
 387 int
 388 megasas_alloc_cmdlist_fusion(struct megasas_instance *instance)
 389 {
 390         u32 max_cmd, i;
 391         struct fusion_context *fusion;
 392
 393         fusion = instance->ctrl_context;
 394
 395         max_cmd = instance->max_fw_cmds;
 396
 397         /*
 398          * fusion->cmd_list is an array of struct megasas_cmd_fusion pointers.
 399          * Allocate the dynamic array first and then allocate individual
 400          * commands.
 401          */
 402         fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *) * max_cmd,
 403                                                 GFP_KERNEL);
 404         if (!fusion->cmd_list) {
 405                 dev_err(&instance->pdev->dev,
 406                         "Failed from %s %d\n",  __func__, __LINE__);
 407                 return -ENOMEM;
 408         }
 409
 410         for (i = 0; i < max_cmd; i++) {
 411                 fusion->cmd_list[i] = kzalloc(sizeof(struct megasas_cmd_fusion),
 412                                               GFP_KERNEL);
 413                 if (!fusion->cmd_list[i]) {
 414                         dev_err(&instance->pdev->dev,
 415                                 "Failed from %s %d\n",  __func__, __LINE__);
 416                         return -ENOMEM;
 417                 }
 418         }
 419         return 0;
 420 }
 421 int
 422 megasas_alloc_request_fusion(struct megasas_instance *instance)
 423 {
 424         struct fusion_context *fusion;
 425
 426         fusion = instance->ctrl_context;
 427
 428         fusion->req_frames_desc =
 429                 dma_alloc_coherent(&instance->pdev->dev,
 430                         fusion->request_alloc_sz,
 431                         &fusion->req_frames_desc_phys, GFP_KERNEL);
 432         if (!fusion->req_frames_desc) {
 433                 dev_err(&instance->pdev->dev,
 434                         "Failed from %s %d\n",  __func__, __LINE__);
 435                 return -ENOMEM;
 436         }
 437
 438         fusion->io_request_frames_pool =
 439                         pci_pool_create("mr_ioreq", instance->pdev,
 440                                 fusion->io_frames_alloc_sz, 16, 0);
 441
 442         if (!fusion->io_request_frames_pool) {
 443                 dev_err(&instance->pdev->dev,
 444                         "Failed from %s %d\n",  __func__, __LINE__);
 445                 return -ENOMEM;
 446         }
 447
 448         fusion->io_request_frames =
 449                         pci_pool_alloc(fusion->io_request_frames_pool,
 450                                 GFP_KERNEL, &fusion->io_request_frames_phys);
 451         if (!fusion->io_request_frames) {
 452                 dev_err(&instance->pdev->dev,
 453                         "Failed from %s %d\n",  __func__, __LINE__);
 454                 return -ENOMEM;
 455         }
 456         return 0;
 457 }
 458
 459 int
 460 megasas_alloc_reply_fusion(struct megasas_instance *instance)
 461 {
 462         int i, count;
 463         struct fusion_context *fusion;
 464         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 465         fusion = instance->ctrl_context;
 466
 467         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 468         fusion->reply_frames_desc_pool =
 469                         pci_pool_create("mr_reply", instance->pdev,
 470                                 fusion->reply_alloc_sz * count, 16, 0);
 471
 472         if (!fusion->reply_frames_desc_pool) {
 473                 dev_err(&instance->pdev->dev,
 474                         "Failed from %s %d\n",  __func__, __LINE__);
 475                 return -ENOMEM;
 476         }
 477
 478         fusion->reply_frames_desc[0] =
 479                 pci_pool_alloc(fusion->reply_frames_desc_pool,
 480                         GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
 481         if (!fusion->reply_frames_desc[0]) {
 482                 dev_err(&instance->pdev->dev,
 483                         "Failed from %s %d\n",  __func__, __LINE__);
 484                 return -ENOMEM;
 485         }
 486         reply_desc = fusion->reply_frames_desc[0];
 487         for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
 488                 reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 489
 490         /* This is not a rdpq mode, but driver still populate
 491          * reply_frame_desc array to use same msix index in ISR path.
 492          */
 493         for (i = 0; i < (count - 1); i++)
 494                 fusion->reply_frames_desc[i + 1] =
 495                         fusion->reply_frames_desc[i] +
 496                         (fusion->reply_alloc_sz)/sizeof(union MPI2_REPLY_DESCRIPTORS_UNION);
 497
 498         return 0;
 499 }
 500
 501 int
 502 megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
 503 {
 504         int i, j, count;
 505         struct fusion_context *fusion;
 506         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
 507
 508         fusion = instance->ctrl_context;
 509
 510         fusion->rdpq_virt = pci_alloc_consistent(instance->pdev,
 511                                 sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 512                                 &fusion->rdpq_phys);
 513         if (!fusion->rdpq_virt) {
 514                 dev_err(&instance->pdev->dev,
 515                         "Failed from %s %d\n",  __func__, __LINE__);
 516                 return -ENOMEM;
 517         }
 518
 519         memset(fusion->rdpq_virt, 0,
 520                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION);
 521         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
 522         fusion->reply_frames_desc_pool = pci_pool_create("mr_rdpq",
 523                                                          instance->pdev, fusion->reply_alloc_sz, 16, 0);
 524
 525         if (!fusion->reply_frames_desc_pool) {
 526                 dev_err(&instance->pdev->dev,
 527                         "Failed from %s %d\n",  __func__, __LINE__);
 528                 return -ENOMEM;
 529         }
 530
 531         for (i = 0; i < count; i++) {
 532                 fusion->reply_frames_desc[i] =
 533                                 pci_pool_alloc(fusion->reply_frames_desc_pool,
 534                                         GFP_KERNEL, &fusion->reply_frames_desc_phys[i]);
 535                 if (!fusion->reply_frames_desc[i]) {
 536                         dev_err(&instance->pdev->dev,
 537                                 "Failed from %s %d\n",  __func__, __LINE__);
 538                         return -ENOMEM;
 539                 }
 540
 541                 fusion->rdpq_virt[i].RDPQBaseAddress =
 542                         fusion->reply_frames_desc_phys[i];
 543
 544                 reply_desc = fusion->reply_frames_desc[i];
 545                 for (j = 0; j < fusion->reply_q_depth; j++, reply_desc++)
 546                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
 547         }
 548         return 0;
 549 }
 550
 551 static void
 552 megasas_free_rdpq_fusion(struct megasas_instance *instance) {
 553
 554         int i;
 555         struct fusion_context *fusion;
 556
 557         fusion = instance->ctrl_context;
 558
 559         for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) {
 560                 if (fusion->reply_frames_desc[i])
 561                         pci_pool_free(fusion->reply_frames_desc_pool,
 562                                 fusion->reply_frames_desc[i],
 563                                 fusion->reply_frames_desc_phys[i]);
 564         }
 565
 566         if (fusion->reply_frames_desc_pool)
 567                 pci_pool_destroy(fusion->reply_frames_desc_pool);
 568
 569         if (fusion->rdpq_virt)
 570                 pci_free_consistent(instance->pdev,
 571                         sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION,
 572                         fusion->rdpq_virt, fusion->rdpq_phys);
 573 }
 574
 575 static void
 576 megasas_free_reply_fusion(struct megasas_instance *instance) {
 577
 578         struct fusion_context *fusion;
 579
 580         fusion = instance->ctrl_context;
 581
 582         if (fusion->reply_frames_desc[0])
 583                 pci_pool_free(fusion->reply_frames_desc_pool,
 584                         fusion->reply_frames_desc[0],
 585                         fusion->reply_frames_desc_phys[0]);
 586
 587         if (fusion->reply_frames_desc_pool)
 588                 pci_pool_destroy(fusion->reply_frames_desc_pool);
 589
 590 }
 591
 592
 593 /**
 594  * megasas_alloc_cmds_fusion -  Allocates the command packets
 595  * @instance:           Adapter soft state
 596  *
 597  *
 598  * Each frame has a 32-bit field called context. This context is used to get
 599  * back the megasas_cmd_fusion from the frame when a frame gets completed
 600  * In this driver, the 32 bit values are the indices into an array cmd_list.
 601  * This array is used only to look up the megasas_cmd_fusion given the context.
 602  * The free commands themselves are maintained in a linked list called cmd_pool.
 603  *
 604  * cmds are formed in the io_request and sg_frame members of the
 605  * megasas_cmd_fusion. The context field is used to get a request descriptor
 606  * and is used as SMID of the cmd.
 607  * SMID value range is from 1 to max_fw_cmds.
 608  */
 609 int
 610 megasas_alloc_cmds_fusion(struct megasas_instance *instance)
 611 {
 612         int i;
 613         struct fusion_context *fusion;
 614         struct megasas_cmd_fusion *cmd;
 615         u32 offset;
 616         dma_addr_t io_req_base_phys;
 617         u8 *io_req_base;
 618
 619
 620         fusion = instance->ctrl_context;
 621
 622         if (megasas_alloc_cmdlist_fusion(instance))
 623                 goto fail_exit;
 624
 625         if (megasas_alloc_request_fusion(instance))
 626                 goto fail_exit;
 627
 628         if (instance->is_rdpq) {
 629                 if (megasas_alloc_rdpq_fusion(instance))
 630                         goto fail_exit;
 631         } else
 632                 if (megasas_alloc_reply_fusion(instance))
 633                         goto fail_exit;
 634
 635
 636         /* The first 256 bytes (SMID 0) is not used. Don't add to the cmd list */
 637         io_req_base = fusion->io_request_frames + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 638         io_req_base_phys = fusion->io_request_frames_phys + MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE;
 639
 640         /*
 641          * Add all the commands to command pool (fusion->cmd_pool)
 642          */
 643
 644         /* SMID 0 is reserved. Set SMID/index from 1 */
 645         for (i = 0; i < instance->max_fw_cmds; i++) {
 646                 cmd = fusion->cmd_list[i];
 647                 offset = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE * i;
 648                 memset(cmd, 0, sizeof(struct megasas_cmd_fusion));
 649                 cmd->index = i + 1;
 650                 cmd->scmd = NULL;
 651                 cmd->sync_cmd_idx = (i >= instance->max_scsi_cmds) ?
 652                                 (i - instance->max_scsi_cmds) :
 653                                 (u32)ULONG_MAX; /* Set to Invalid */
 654                 cmd->instance = instance;
 655                 cmd->io_request =
 656                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
 657                   (io_req_base + offset);
 658                 memset(cmd->io_request, 0,
 659                        sizeof(struct MPI2_RAID_SCSI_IO_REQUEST));
 660                 cmd->io_request_phys_addr = io_req_base_phys + offset;
 661         }
 662
 663         if (megasas_create_sg_sense_fusion(instance))
 664                 goto fail_exit;
 665
 666         return 0;
 667
 668 fail_exit:
 669         megasas_free_cmds_fusion(instance);
 670         return -ENOMEM;
 671 }
 672
 673 /**
 674  * wait_and_poll -      Issues a polling command
 675  * @instance:                   Adapter soft state
 676  * @cmd:                        Command packet to be issued
 677  *
 678  * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
 679  */
 680 int
 681 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 682         int seconds)
 683 {
 684         int i;
 685         struct megasas_header *frame_hdr = &cmd->frame->hdr;
 686         struct fusion_context *fusion;
 687
 688         u32 msecs = seconds * 1000;
 689
 690         fusion = instance->ctrl_context;
 691         /*
 692          * Wait for cmd_status to change
 693          */
 694         for (i = 0; (i < msecs) && (frame_hdr->cmd_status == 0xff); i += 20) {
 695                 rmb();
 696                 msleep(20);
 697         }
 698
 699         if (frame_hdr->cmd_status == MFI_STAT_INVALID_STATUS)
 700                 return DCMD_TIMEOUT;
 701         else if (frame_hdr->cmd_status == MFI_STAT_OK)
 702                 return DCMD_SUCCESS;
 703         else
 704                 return DCMD_FAILED;
 705 }
 706
 707 /**
 708  * megasas_ioc_init_fusion -    Initializes the FW
 709  * @instance:           Adapter soft state
 710  *
 711  * Issues the IOC Init cmd
 712  */
 713 int
 714 megasas_ioc_init_fusion(struct megasas_instance *instance)
 715 {
 716         struct megasas_init_frame *init_frame;
 717         struct MPI2_IOC_INIT_REQUEST *IOCInitMessage = NULL;
 718         dma_addr_t      ioc_init_handle;
 719         struct megasas_cmd *cmd;
 720         u8 ret, cur_rdpq_mode;
 721         struct fusion_context *fusion;
 722         union MEGASAS_REQUEST_DESCRIPTOR_UNION req_desc;
 723         int i;
 724         struct megasas_header *frame_hdr;
 725         const char *sys_info;
 726         MFI_CAPABILITIES *drv_ops;
 727         u32 scratch_pad_2;
 728
 729         fusion = instance->ctrl_context;
 730
 731         cmd = megasas_get_cmd(instance);
 732
 733         if (!cmd) {
 734                 dev_err(&instance->pdev->dev, "Could not allocate cmd for INIT Frame\n");
 735                 ret = 1;
 736                 goto fail_get_cmd;
 737         }
 738
 739         scratch_pad_2 = readl
 740                 (&instance->reg_set->outbound_scratch_pad_2);
 741
 742         cur_rdpq_mode = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ? 1 : 0;
 743
 744         if (instance->is_rdpq && !cur_rdpq_mode) {
 745                 dev_err(&instance->pdev->dev, "Firmware downgrade *NOT SUPPORTED*"
 746                         " from RDPQ mode to non RDPQ mode\n");
 747                 ret = 1;
 748                 goto fail_fw_init;
 749         }
 750
 751         IOCInitMessage =
 752           dma_alloc_coherent(&instance->pdev->dev,
 753                              sizeof(struct MPI2_IOC_INIT_REQUEST),
 754                              &ioc_init_handle, GFP_KERNEL);
 755
 756         if (!IOCInitMessage) {
 757                 dev_err(&instance->pdev->dev, "Could not allocate memory for "
 758                        "IOCInitMessage\n");
 759                 ret = 1;
 760                 goto fail_fw_init;
 761         }
 762
 763         memset(IOCInitMessage, 0, sizeof(struct MPI2_IOC_INIT_REQUEST));
 764
 765         IOCInitMessage->Function = MPI2_FUNCTION_IOC_INIT;
 766         IOCInitMessage->WhoInit = MPI2_WHOINIT_HOST_DRIVER;
 767         IOCInitMessage->MsgVersion = cpu_to_le16(MPI2_VERSION);
 768         IOCInitMessage->HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
 769         IOCInitMessage->SystemRequestFrameSize = cpu_to_le16(MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE / 4);
 770
 771         IOCInitMessage->ReplyDescriptorPostQueueDepth = cpu_to_le16(fusion->reply_q_depth);
 772         IOCInitMessage->ReplyDescriptorPostQueueAddress = instance->is_rdpq ?
 773                         cpu_to_le64(fusion->rdpq_phys) :
 774                         cpu_to_le64(fusion->reply_frames_desc_phys[0]);
 775         IOCInitMessage->MsgFlags = instance->is_rdpq ?
 776                         MPI2_IOCINIT_MSGFLAG_RDPQ_ARRAY_MODE : 0;
 777         IOCInitMessage->SystemRequestFrameBaseAddress = cpu_to_le64(fusion->io_request_frames_phys);
 778         IOCInitMessage->HostMSIxVectors = instance->msix_vectors;
 779         init_frame = (struct megasas_init_frame *)cmd->frame;
 780         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
 781
 782         frame_hdr = &cmd->frame->hdr;
 783         frame_hdr->cmd_status = 0xFF;
 784         frame_hdr->flags = cpu_to_le16(
 785                 le16_to_cpu(frame_hdr->flags) |
 786                 MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
 787
 788         init_frame->cmd = MFI_CMD_INIT;
 789         init_frame->cmd_status = 0xFF;
 790
 791         drv_ops = (MFI_CAPABILITIES *) &(init_frame->driver_operations);
 792
 793         /* driver support Extended MSIX */
 794         if (fusion->adapter_type == INVADER_SERIES)
 795                 drv_ops->mfi_capabilities.support_additional_msix = 1;
 796         /* driver supports HA / Remote LUN over Fast Path interface */
 797         drv_ops->mfi_capabilities.support_fp_remote_lun = 1;
 798
 799         drv_ops->mfi_capabilities.support_max_255lds = 1;
 800         drv_ops->mfi_capabilities.support_ndrive_r1_lb = 1;
 801         drv_ops->mfi_capabilities.security_protocol_cmds_fw = 1;
 802
 803         if (instance->max_chain_frame_sz > MEGASAS_CHAIN_FRAME_SZ_MIN)
 804                 drv_ops->mfi_capabilities.support_ext_io_size = 1;
 805
 806         drv_ops->mfi_capabilities.support_fp_rlbypass = 1;
 807         if (!dual_qdepth_disable)
 808                 drv_ops->mfi_capabilities.support_ext_queue_depth = 1;
 809
 810         drv_ops->mfi_capabilities.support_qd_throttling = 1;
 811         /* Convert capability to LE32 */
 812         cpu_to_le32s((u32 *)&init_frame->driver_operations.mfi_capabilities);
 813
 814         sys_info = dmi_get_system_info(DMI_PRODUCT_UUID);
 815         if (instance->system_info_buf && sys_info) {
 816                 memcpy(instance->system_info_buf->systemId, sys_info,
 817                         strlen(sys_info) > 64 ? 64 : strlen(sys_info));
 818                 instance->system_info_buf->systemIdLength =
 819                         strlen(sys_info) > 64 ? 64 : strlen(sys_info);
 820                 init_frame->system_info_lo = instance->system_info_h;
 821                 init_frame->system_info_hi = 0;
 822         }
 823
 824         init_frame->queue_info_new_phys_addr_hi =
 825                 cpu_to_le32(upper_32_bits(ioc_init_handle));
 826         init_frame->queue_info_new_phys_addr_lo =
 827                 cpu_to_le32(lower_32_bits(ioc_init_handle));
 828         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct MPI2_IOC_INIT_REQUEST));
 829
 830         req_desc.u.low = cpu_to_le32(lower_32_bits(cmd->frame_phys_addr));
 831         req_desc.u.high = cpu_to_le32(upper_32_bits(cmd->frame_phys_addr));
 832         req_desc.MFAIo.RequestFlags =
 833                 (MEGASAS_REQ_DESCRIPT_FLAGS_MFA <<
 834                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
 835
 836         /*
 837          * disable the intr before firing the init frame
 838          */
 839         instance->instancet->disable_intr(instance);
 840
 841         for (i = 0; i < (10 * 1000); i += 20) {
 842                 if (readl(&instance->reg_set->doorbell) & 1)
 843                         msleep(20);
 844                 else
 845                         break;
 846         }
 847
 848         megasas_fire_cmd_fusion(instance, &req_desc);
 849
 850         wait_and_poll(instance, cmd, MFI_POLL_TIMEOUT_SECS);
 851
 852         frame_hdr = &cmd->frame->hdr;
 853         if (frame_hdr->cmd_status != 0) {
 854                 ret = 1;
 855                 goto fail_fw_init;
 856         }
 857         dev_info(&instance->pdev->dev, "Init cmd success\n");
 858
 859         ret = 0;
 860
 861 fail_fw_init:
 862         megasas_return_cmd(instance, cmd);
 863         if (IOCInitMessage)
 864                 dma_free_coherent(&instance->pdev->dev,
 865                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
 866                                   IOCInitMessage, ioc_init_handle);
 867 fail_get_cmd:
 868         return ret;
 869 }
 870
 871 /**
 872  * megasas_sync_pd_seq_num -    JBOD SEQ MAP
 873  * @instance:           Adapter soft state
 874  * @pend:               set to 1, if it is pended jbod map.
 875  *
 876  * Issue Jbod map to the firmware. If it is pended command,
 877  * issue command and return. If it is first instance of jbod map
 878  * issue and receive command.
 879  */
 880 int
 881 megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) {
 882         int ret = 0;
 883         u32 pd_seq_map_sz;
 884         struct megasas_cmd *cmd;
 885         struct megasas_dcmd_frame *dcmd;
 886         struct fusion_context *fusion = instance->ctrl_context;
 887         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
 888         dma_addr_t pd_seq_h;
 889
 890         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)];
 891         pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)];
 892         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
 893                         (sizeof(struct MR_PD_CFG_SEQ) *
 894                         (MAX_PHYSICAL_DEVICES - 1));
 895
 896         cmd = megasas_get_cmd(instance);
 897         if (!cmd) {
 898                 dev_err(&instance->pdev->dev,
 899                         "Could not get mfi cmd. Fail from %s %d\n",
 900                         __func__, __LINE__);
 901                 return -ENOMEM;
 902         }
 903
 904         dcmd = &cmd->frame->dcmd;
 905
 906         memset(pd_sync, 0, pd_seq_map_sz);
 907         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
 908         dcmd->cmd = MFI_CMD_DCMD;
 909         dcmd->cmd_status = 0xFF;
 910         dcmd->sge_count = 1;
 911         dcmd->timeout = 0;
 912         dcmd->pad_0 = 0;
 913         dcmd->data_xfer_len = cpu_to_le32(pd_seq_map_sz);
 914         dcmd->opcode = cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO);
 915         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(pd_seq_h);
 916         dcmd->sgl.sge32[0].length = cpu_to_le32(pd_seq_map_sz);
 917
 918         if (pend) {
 919                 dcmd->mbox.b[0] = MEGASAS_DCMD_MBOX_PEND_FLAG;
 920                 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
 921                 instance->jbod_seq_cmd = cmd;
 922                 instance->instancet->issue_dcmd(instance, cmd);
 923                 return 0;
 924         }
 925
 926         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
 927
 928         /* Below code is only for non pended DCMD */
 929         if (instance->ctrl_context && !instance->mask_interrupts)
 930                 ret = megasas_issue_blocked_cmd(instance, cmd,
 931                         MFI_IO_TIMEOUT_SECS);
 932         else
 933                 ret = megasas_issue_polled(instance, cmd);
 934
 935         if (le32_to_cpu(pd_sync->count) > MAX_PHYSICAL_DEVICES) {
 936                 dev_warn(&instance->pdev->dev,
 937                         "driver supports max %d JBOD, but FW reports %d\n",
 938                         MAX_PHYSICAL_DEVICES, le32_to_cpu(pd_sync->count));
 939                 ret = -EINVAL;
 940         }
 941
 942         if (ret == DCMD_TIMEOUT && instance->ctrl_context)
 943                 megaraid_sas_kill_hba(instance);
 944
 945         if (ret == DCMD_SUCCESS)
 946                 instance->pd_seq_map_id++;
 947
 948         megasas_return_cmd(instance, cmd);
 949         return ret;
 950 }
 951
 952 /*
 953  * megasas_get_ld_map_info -    Returns FW's ld_map structure
 954  * @instance:                           Adapter soft state
 955  * @pend:                               Pend the command or not
 956  * Issues an internal command (DCMD) to get the FW's controller PD
 957  * list structure.  This information is mainly used to find out SYSTEM
 958  * supported by the FW.
 959  * dcmd.mbox value setting for MR_DCMD_LD_MAP_GET_INFO
 960  * dcmd.mbox.b[0]       - number of LDs being sync'd
 961  * dcmd.mbox.b[1]       - 0 - complete command immediately.
 962  *                      - 1 - pend till config change
 963  * dcmd.mbox.b[2]       - 0 - supports max 64 lds and uses legacy MR_FW_RAID_MAP
 964  *                      - 1 - supports max MAX_LOGICAL_DRIVES_EXT lds and
 965  *                              uses extended struct MR_FW_RAID_MAP_EXT
 966  */
 967 static int
 968 megasas_get_ld_map_info(struct megasas_instance *instance)
 969 {
 970         int ret = 0;
 971         struct megasas_cmd *cmd;
 972         struct megasas_dcmd_frame *dcmd;
 973         void *ci;
 974         dma_addr_t ci_h = 0;
 975         u32 size_map_info;
 976         struct fusion_context *fusion;
 977
 978         cmd = megasas_get_cmd(instance);
 979
 980         if (!cmd) {
 981                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for map info\n");
 982                 return -ENOMEM;
 983         }
 984
 985         fusion = instance->ctrl_context;
 986
 987         if (!fusion) {
 988                 megasas_return_cmd(instance, cmd);
 989                 return -ENXIO;
 990         }
 991
 992         dcmd = &cmd->frame->dcmd;
 993
 994         size_map_info = fusion->current_map_sz;
 995
 996         ci = (void *) fusion->ld_map[(instance->map_id & 1)];
 997         ci_h = fusion->ld_map_phys[(instance->map_id & 1)];
 998
 999         if (!ci) {
1000                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ld_map_info\n");
1001                 megasas_return_cmd(instance, cmd);
1002                 return -ENOMEM;
1003         }
1004
1005         memset(ci, 0, fusion->max_map_sz);
1006         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1007 #if VD_EXT_DEBUG
1008         dev_dbg(&instance->pdev->dev,
1009                 "%s sending MR_DCMD_LD_MAP_GET_INFO with size %d\n",
1010                 __func__, cpu_to_le32(size_map_info));
1011 #endif
1012         dcmd->cmd = MFI_CMD_DCMD;
1013         dcmd->cmd_status = 0xFF;
1014         dcmd->sge_count = 1;
1015         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
1016         dcmd->timeout = 0;
1017         dcmd->pad_0 = 0;
1018         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1019         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1020         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
1021         dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
1022
1023         if (instance->ctrl_context && !instance->mask_interrupts)
1024                 ret = megasas_issue_blocked_cmd(instance, cmd,
1025                         MFI_IO_TIMEOUT_SECS);
1026         else
1027                 ret = megasas_issue_polled(instance, cmd);
1028
1029         if (ret == DCMD_TIMEOUT && instance->ctrl_context)
1030                 megaraid_sas_kill_hba(instance);
1031
1032         megasas_return_cmd(instance, cmd);
1033
1034         return ret;
1035 }
1036
1037 u8
1038 megasas_get_map_info(struct megasas_instance *instance)
1039 {
1040         struct fusion_context *fusion = instance->ctrl_context;
1041
1042         fusion->fast_path_io = 0;
1043         if (!megasas_get_ld_map_info(instance)) {
1044                 if (MR_ValidateMapInfo(instance)) {
1045                         fusion->fast_path_io = 1;
1046                         return 0;
1047                 }
1048         }
1049         return 1;
1050 }
1051
1052 /*
1053  * megasas_sync_map_info -      Returns FW's ld_map structure
1054  * @instance:                           Adapter soft state
1055  *
1056  * Issues an internal command (DCMD) to get the FW's controller PD
1057  * list structure.  This information is mainly used to find out SYSTEM
1058  * supported by the FW.
1059  */
1060 int
1061 megasas_sync_map_info(struct megasas_instance *instance)
1062 {
1063         int ret = 0, i;
1064         struct megasas_cmd *cmd;
1065         struct megasas_dcmd_frame *dcmd;
1066         u32 size_sync_info, num_lds;
1067         struct fusion_context *fusion;
1068         struct MR_LD_TARGET_SYNC *ci = NULL;
1069         struct MR_DRV_RAID_MAP_ALL *map;
1070         struct MR_LD_RAID  *raid;
1071         struct MR_LD_TARGET_SYNC *ld_sync;
1072         dma_addr_t ci_h = 0;
1073         u32 size_map_info;
1074
1075         cmd = megasas_get_cmd(instance);
1076
1077         if (!cmd) {
1078                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get cmd for sync info\n");
1079                 return -ENOMEM;
1080         }
1081
1082         fusion = instance->ctrl_context;
1083
1084         if (!fusion) {
1085                 megasas_return_cmd(instance, cmd);
1086                 return 1;
1087         }
1088
1089         map = fusion->ld_drv_map[instance->map_id & 1];
1090
1091         num_lds = le16_to_cpu(map->raidMap.ldCount);
1092
1093         dcmd = &cmd->frame->dcmd;
1094
1095         size_sync_info = sizeof(struct MR_LD_TARGET_SYNC) *num_lds;
1096
1097         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1098
1099         ci = (struct MR_LD_TARGET_SYNC *)
1100           fusion->ld_map[(instance->map_id - 1) & 1];
1101         memset(ci, 0, fusion->max_map_sz);
1102
1103         ci_h = fusion->ld_map_phys[(instance->map_id - 1) & 1];
1104
1105         ld_sync = (struct MR_LD_TARGET_SYNC *)ci;
1106
1107         for (i = 0; i < num_lds; i++, ld_sync++) {
1108                 raid = MR_LdRaidGet(i, map);
1109                 ld_sync->targetId = MR_GetLDTgtId(i, map);
1110                 ld_sync->seqNum = raid->seqNum;
1111         }
1112
1113         size_map_info = fusion->current_map_sz;
1114
1115         dcmd->cmd = MFI_CMD_DCMD;
1116         dcmd->cmd_status = 0xFF;
1117         dcmd->sge_count = 1;
1118         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_WRITE);
1119         dcmd->timeout = 0;
1120         dcmd->pad_0 = 0;
1121         dcmd->data_xfer_len = cpu_to_le32(size_map_info);
1122         dcmd->mbox.b[0] = num_lds;
1123         dcmd->mbox.b[1] = MEGASAS_DCMD_MBOX_PEND_FLAG;
1124         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO);
1125         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
1126         dcmd->sgl.sge32[0].length = cpu_to_le32(size_map_info);
1127
1128         instance->map_update_cmd = cmd;
1129
1130         instance->instancet->issue_dcmd(instance, cmd);
1131
1132         return ret;
1133 }
1134
1135 /*
1136  * meagasas_display_intel_branding - Display branding string
1137  * @instance: per adapter object
1138  *
1139  * Return nothing.
1140  */
1141 static void
1142 megasas_display_intel_branding(struct megasas_instance *instance)
1143 {
1144         if (instance->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1145                 return;
1146
1147         switch (instance->pdev->device) {
1148         case PCI_DEVICE_ID_LSI_INVADER:
1149                 switch (instance->pdev->subsystem_device) {
1150                 case MEGARAID_INTEL_RS3DC080_SSDID:
1151                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1152                                 instance->host->host_no,
1153                                 MEGARAID_INTEL_RS3DC080_BRANDING);
1154                         break;
1155                 case MEGARAID_INTEL_RS3DC040_SSDID:
1156                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1157                                 instance->host->host_no,
1158                                 MEGARAID_INTEL_RS3DC040_BRANDING);
1159                         break;
1160                 case MEGARAID_INTEL_RS3SC008_SSDID:
1161                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1162                                 instance->host->host_no,
1163                                 MEGARAID_INTEL_RS3SC008_BRANDING);
1164                         break;
1165                 case MEGARAID_INTEL_RS3MC044_SSDID:
1166                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1167                                 instance->host->host_no,
1168                                 MEGARAID_INTEL_RS3MC044_BRANDING);
1169                         break;
1170                 default:
1171                         break;
1172                 }
1173                 break;
1174         case PCI_DEVICE_ID_LSI_FURY:
1175                 switch (instance->pdev->subsystem_device) {
1176                 case MEGARAID_INTEL_RS3WC080_SSDID:
1177                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1178                                 instance->host->host_no,
1179                                 MEGARAID_INTEL_RS3WC080_BRANDING);
1180                         break;
1181                 case MEGARAID_INTEL_RS3WC040_SSDID:
1182                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1183                                 instance->host->host_no,
1184                                 MEGARAID_INTEL_RS3WC040_BRANDING);
1185                         break;
1186                 default:
1187                         break;
1188                 }
1189                 break;
1190         case PCI_DEVICE_ID_LSI_CUTLASS_52:
1191         case PCI_DEVICE_ID_LSI_CUTLASS_53:
1192                 switch (instance->pdev->subsystem_device) {
1193                 case MEGARAID_INTEL_RMS3BC160_SSDID:
1194                         dev_info(&instance->pdev->dev, "scsi host %d: %s\n",
1195                                 instance->host->host_no,
1196                                 MEGARAID_INTEL_RMS3BC160_BRANDING);
1197                         break;
1198                 default:
1199                         break;
1200                 }
1201                 break;
1202         default:
1203                 break;
1204         }
1205 }
1206
1207 /**
1208  * megasas_init_adapter_fusion -        Initializes the FW
1209  * @instance:           Adapter soft state
1210  *
1211  * This is the main function for initializing firmware.
1212  */
1213 u32
1214 megasas_init_adapter_fusion(struct megasas_instance *instance)
1215 {
1216         struct megasas_register_set __iomem *reg_set;
1217         struct fusion_context *fusion;
1218         u32 max_cmd, scratch_pad_2;
1219         int i = 0, count;
1220
1221         fusion = instance->ctrl_context;
1222
1223         reg_set = instance->reg_set;
1224
1225         megasas_fusion_update_can_queue(instance, PROBE_CONTEXT);
1226
1227         /*
1228          * Reduce the max supported cmds by 1. This is to ensure that the
1229          * reply_q_sz (1 more than the max cmd that driver may send)
1230          * does not exceed max cmds that the FW can support
1231          */
1232         instance->max_fw_cmds = instance->max_fw_cmds-1;
1233
1234         /*
1235          * Only Driver's internal DCMDs and IOCTL DCMDs needs to have MFI frames
1236          */
1237         instance->max_mfi_cmds =
1238                 MEGASAS_FUSION_INTERNAL_CMDS + MEGASAS_FUSION_IOCTL_CMDS;
1239
1240         max_cmd = instance->max_fw_cmds;
1241
1242         fusion->reply_q_depth = 2 * (((max_cmd + 1 + 15)/16)*16);
1243
1244         fusion->request_alloc_sz =
1245                 sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *max_cmd;
1246         fusion->reply_alloc_sz = sizeof(union MPI2_REPLY_DESCRIPTORS_UNION)
1247                 *(fusion->reply_q_depth);
1248         fusion->io_frames_alloc_sz = MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE +
1249                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE *
1250                  (max_cmd + 1)); /* Extra 1 for SMID 0 */
1251
1252         scratch_pad_2 = readl(&instance->reg_set->outbound_scratch_pad_2);
1253         /* If scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK is set,
1254          * Firmware support extended IO chain frame which is 4 times more than
1255          * legacy Firmware.
1256          * Legacy Firmware - Frame size is (8 * 128) = 1K
1257          * 1M IO Firmware  - Frame size is (8 * 128 * 4)  = 4K
1258          */
1259         if (scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_UNITS_MASK)
1260                 instance->max_chain_frame_sz =
1261                         ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1262                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_1MB_IO;
1263         else
1264                 instance->max_chain_frame_sz =
1265                         ((scratch_pad_2 & MEGASAS_MAX_CHAIN_SIZE_MASK) >>
1266                         MEGASAS_MAX_CHAIN_SHIFT) * MEGASAS_256K_IO;
1267
1268         if (instance->max_chain_frame_sz < MEGASAS_CHAIN_FRAME_SZ_MIN) {
1269                 dev_warn(&instance->pdev->dev, "frame size %d invalid, fall back to legacy max frame size %d\n",
1270                         instance->max_chain_frame_sz,
1271                         MEGASAS_CHAIN_FRAME_SZ_MIN);
1272                 instance->max_chain_frame_sz = MEGASAS_CHAIN_FRAME_SZ_MIN;
1273         }
1274
1275         fusion->max_sge_in_main_msg =
1276                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE
1277                         - offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL))/16;
1278
1279         fusion->max_sge_in_chain =
1280                 instance->max_chain_frame_sz
1281                         / sizeof(union MPI2_SGE_IO_UNION);
1282
1283         instance->max_num_sge =
1284                 rounddown_pow_of_two(fusion->max_sge_in_main_msg
1285                         + fusion->max_sge_in_chain - 2);
1286
1287         /* Used for pass thru MFI frame (DCMD) */
1288         fusion->chain_offset_mfi_pthru =
1289                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL)/16;
1290
1291         fusion->chain_offset_io_request =
1292                 (MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE -
1293                  sizeof(union MPI2_SGE_IO_UNION))/16;
1294
1295         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
1296         for (i = 0 ; i < count; i++)
1297                 fusion->last_reply_idx[i] = 0;
1298
1299         /*
1300          * For fusion adapters, 3 commands for IOCTL and 5 commands
1301          * for driver's internal DCMDs.
1302          */
1303         instance->max_scsi_cmds = instance->max_fw_cmds -
1304                                 (MEGASAS_FUSION_INTERNAL_CMDS +
1305                                 MEGASAS_FUSION_IOCTL_CMDS);
1306         sema_init(&instance->ioctl_sem, MEGASAS_FUSION_IOCTL_CMDS);
1307
1308         /*
1309          * Allocate memory for descriptors
1310          * Create a pool of commands
1311          */
1312         if (megasas_alloc_cmds(instance))
1313                 goto fail_alloc_mfi_cmds;
1314         if (megasas_alloc_cmds_fusion(instance))
1315                 goto fail_alloc_cmds;
1316
1317         if (megasas_ioc_init_fusion(instance))
1318                 goto fail_ioc_init;
1319
1320         megasas_display_intel_branding(instance);
1321         if (megasas_get_ctrl_info(instance)) {
1322                 dev_err(&instance->pdev->dev,
1323                         "Could not get controller info. Fail from %s %d\n",
1324                         __func__, __LINE__);
1325                 goto fail_ioc_init;
1326         }
1327
1328         instance->flag_ieee = 1;
1329         fusion->fast_path_io = 0;
1330
1331         fusion->drv_map_pages = get_order(fusion->drv_map_sz);
1332         for (i = 0; i < 2; i++) {
1333                 fusion->ld_map[i] = NULL;
1334                 fusion->ld_drv_map[i] = (void *)__get_free_pages(GFP_KERNEL,
1335                         fusion->drv_map_pages);
1336                 if (!fusion->ld_drv_map[i]) {
1337                         dev_err(&instance->pdev->dev, "Could not allocate "
1338                                 "memory for local map info for %d pages\n",
1339                                 fusion->drv_map_pages);
1340                         if (i == 1)
1341                                 free_pages((ulong)fusion->ld_drv_map[0],
1342                                         fusion->drv_map_pages);
1343                         goto fail_ioc_init;
1344                 }
1345                 memset(fusion->ld_drv_map[i], 0,
1346                         ((1 << PAGE_SHIFT) << fusion->drv_map_pages));
1347         }
1348
1349         for (i = 0; i < 2; i++) {
1350                 fusion->ld_map[i] = dma_alloc_coherent(&instance->pdev->dev,
1351                                                        fusion->max_map_sz,
1352                                                        &fusion->ld_map_phys[i],
1353                                                        GFP_KERNEL);
1354                 if (!fusion->ld_map[i]) {
1355                         dev_err(&instance->pdev->dev, "Could not allocate memory "
1356                                "for map info\n");
1357                         goto fail_map_info;
1358                 }
1359         }
1360
1361         if (!megasas_get_map_info(instance))
1362                 megasas_sync_map_info(instance);
1363
1364         return 0;
1365
1366 fail_map_info:
1367         if (i == 1)
1368                 dma_free_coherent(&instance->pdev->dev, fusion->max_map_sz,
1369                                   fusion->ld_map[0], fusion->ld_map_phys[0]);
1370 fail_ioc_init:
1371         megasas_free_cmds_fusion(instance);
1372 fail_alloc_cmds:
1373         megasas_free_cmds(instance);
1374 fail_alloc_mfi_cmds:
1375         return 1;
1376 }
1377
1378 /**
1379  * map_cmd_status -     Maps FW cmd status to OS cmd status
1380  * @cmd :               Pointer to cmd
1381  * @status :            status of cmd returned by FW
1382  * @ext_status :        ext status of cmd returned by FW
1383  */
1384
1385 void
1386 map_cmd_status(struct megasas_cmd_fusion *cmd, u8 status, u8 ext_status)
1387 {
1388
1389         switch (status) {
1390
1391         case MFI_STAT_OK:
1392                 cmd->scmd->result = DID_OK << 16;
1393                 break;
1394
1395         case MFI_STAT_SCSI_IO_FAILED:
1396         case MFI_STAT_LD_INIT_IN_PROGRESS:
1397                 cmd->scmd->result = (DID_ERROR << 16) | ext_status;
1398                 break;
1399
1400         case MFI_STAT_SCSI_DONE_WITH_ERROR:
1401
1402                 cmd->scmd->result = (DID_OK << 16) | ext_status;
1403                 if (ext_status == SAM_STAT_CHECK_CONDITION) {
1404                         memset(cmd->scmd->sense_buffer, 0,
1405                                SCSI_SENSE_BUFFERSIZE);
1406                         memcpy(cmd->scmd->sense_buffer, cmd->sense,
1407                                SCSI_SENSE_BUFFERSIZE);
1408                         cmd->scmd->result |= DRIVER_SENSE << 24;
1409                 }
1410                 break;
1411
1412         case MFI_STAT_LD_OFFLINE:
1413         case MFI_STAT_DEVICE_NOT_FOUND:
1414                 cmd->scmd->result = DID_BAD_TARGET << 16;
1415                 break;
1416         case MFI_STAT_CONFIG_SEQ_MISMATCH:
1417                 cmd->scmd->result = DID_IMM_RETRY << 16;
1418                 break;
1419         default:
1420                 dev_printk(KERN_DEBUG, &cmd->instance->pdev->dev, "FW status %#x\n", status);
1421                 cmd->scmd->result = DID_ERROR << 16;
1422                 break;
1423         }
1424 }
1425
1426 /**
1427  * megasas_make_sgl_fusion -    Prepares 32-bit SGL
1428  * @instance:           Adapter soft state
1429  * @scp:                SCSI command from the mid-layer
1430  * @sgl_ptr:            SGL to be filled in
1431  * @cmd:                cmd we are working on
1432  *
1433  * If successful, this function returns the number of SG elements.
1434  */
1435 static int
1436 megasas_make_sgl_fusion(struct megasas_instance *instance,
1437                         struct scsi_cmnd *scp,
1438                         struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr,
1439                         struct megasas_cmd_fusion *cmd)
1440 {
1441         int i, sg_processed, sge_count;
1442         struct scatterlist *os_sgl;
1443         struct fusion_context *fusion;
1444
1445         fusion = instance->ctrl_context;
1446
1447         if (fusion->adapter_type == INVADER_SERIES) {
1448                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end = sgl_ptr;
1449                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
1450                 sgl_ptr_end->Flags = 0;
1451         }
1452
1453         sge_count = scsi_dma_map(scp);
1454
1455         BUG_ON(sge_count < 0);
1456
1457         if (sge_count > instance->max_num_sge || !sge_count)
1458                 return sge_count;
1459
1460         scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1461                 sgl_ptr->Length = cpu_to_le32(sg_dma_len(os_sgl));
1462                 sgl_ptr->Address = cpu_to_le64(sg_dma_address(os_sgl));
1463                 sgl_ptr->Flags = 0;
1464                 if (fusion->adapter_type == INVADER_SERIES)
1465                         if (i == sge_count - 1)
1466                                 sgl_ptr->Flags = IEEE_SGE_FLAGS_END_OF_LIST;
1467                 sgl_ptr++;
1468
1469                 sg_processed = i + 1;
1470
1471                 if ((sg_processed ==  (fusion->max_sge_in_main_msg - 1)) &&
1472                     (sge_count > fusion->max_sge_in_main_msg)) {
1473
1474                         struct MPI25_IEEE_SGE_CHAIN64 *sg_chain;
1475                         if (fusion->adapter_type == INVADER_SERIES) {
1476                                 if ((le16_to_cpu(cmd->io_request->IoFlags) &
1477                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH) !=
1478                                         MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH)
1479                                         cmd->io_request->ChainOffset =
1480                                                 fusion->
1481                                                 chain_offset_io_request;
1482                                 else
1483                                         cmd->io_request->ChainOffset = 0;
1484                         } else
1485                                 cmd->io_request->ChainOffset =
1486                                         fusion->chain_offset_io_request;
1487
1488                         sg_chain = sgl_ptr;
1489                         /* Prepare chain element */
1490                         sg_chain->NextChainOffset = 0;
1491                         if (fusion->adapter_type == INVADER_SERIES)
1492                                 sg_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT;
1493                         else
1494                                 sg_chain->Flags =
1495                                         (IEEE_SGE_FLAGS_CHAIN_ELEMENT |
1496                                          MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR);
1497                         sg_chain->Length =  cpu_to_le32((sizeof(union MPI2_SGE_IO_UNION) * (sge_count - sg_processed)));
1498                         sg_chain->Address = cpu_to_le64(cmd->sg_frame_phys_addr);
1499
1500                         sgl_ptr =
1501                           (struct MPI25_IEEE_SGE_CHAIN64 *)cmd->sg_frame;
1502                         memset(sgl_ptr, 0, instance->max_chain_frame_sz);
1503                 }
1504         }
1505
1506         return sge_count;
1507 }
1508
1509 /**
1510  * megasas_set_pd_lba - Sets PD LBA
1511  * @cdb:                CDB
1512  * @cdb_len:            cdb length
1513  * @start_blk:          Start block of IO
1514  *
1515  * Used to set the PD LBA in CDB for FP IOs
1516  */
1517 void
1518 megasas_set_pd_lba(struct MPI2_RAID_SCSI_IO_REQUEST *io_request, u8 cdb_len,
1519                    struct IO_REQUEST_INFO *io_info, struct scsi_cmnd *scp,
1520                    struct MR_DRV_RAID_MAP_ALL *local_map_ptr, u32 ref_tag)
1521 {
1522         struct MR_LD_RAID *raid;
1523         u32 ld;
1524         u64 start_blk = io_info->pdBlock;
1525         u8 *cdb = io_request->CDB.CDB32;
1526         u32 num_blocks = io_info->numBlocks;
1527         u8 opcode = 0, flagvals = 0, groupnum = 0, control = 0;
1528
1529         /* Check if T10 PI (DIF) is enabled for this LD */
1530         ld = MR_TargetIdToLdGet(io_info->ldTgtId, local_map_ptr);
1531         raid = MR_LdRaidGet(ld, local_map_ptr);
1532         if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1533                 memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1534                 cdb[0] =  MEGASAS_SCSI_VARIABLE_LENGTH_CMD;
1535                 cdb[7] =  MEGASAS_SCSI_ADDL_CDB_LEN;
1536
1537                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1538                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_READ32;
1539                 else
1540                         cdb[9] = MEGASAS_SCSI_SERVICE_ACTION_WRITE32;
1541                 cdb[10] = MEGASAS_RD_WR_PROTECT_CHECK_ALL;
1542
1543                 /* LBA */
1544                 cdb[12] = (u8)((start_blk >> 56) & 0xff);
1545                 cdb[13] = (u8)((start_blk >> 48) & 0xff);
1546                 cdb[14] = (u8)((start_blk >> 40) & 0xff);
1547                 cdb[15] = (u8)((start_blk >> 32) & 0xff);
1548                 cdb[16] = (u8)((start_blk >> 24) & 0xff);
1549                 cdb[17] = (u8)((start_blk >> 16) & 0xff);
1550                 cdb[18] = (u8)((start_blk >> 8) & 0xff);
1551                 cdb[19] = (u8)(start_blk & 0xff);
1552
1553                 /* Logical block reference tag */
1554                 io_request->CDB.EEDP32.PrimaryReferenceTag =
1555                         cpu_to_be32(ref_tag);
1556                 io_request->CDB.EEDP32.PrimaryApplicationTagMask = cpu_to_be16(0xffff);
1557                 io_request->IoFlags = cpu_to_le16(32); /* Specify 32-byte cdb */
1558
1559                 /* Transfer length */
1560                 cdb[28] = (u8)((num_blocks >> 24) & 0xff);
1561                 cdb[29] = (u8)((num_blocks >> 16) & 0xff);
1562                 cdb[30] = (u8)((num_blocks >> 8) & 0xff);
1563                 cdb[31] = (u8)(num_blocks & 0xff);
1564
1565                 /* set SCSI IO EEDPFlags */
1566                 if (scp->sc_data_direction == PCI_DMA_FROMDEVICE) {
1567                         io_request->EEDPFlags = cpu_to_le16(
1568                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG  |
1569                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG |
1570                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP |
1571                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG |
1572                                 MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD);
1573                 } else {
1574                         io_request->EEDPFlags = cpu_to_le16(
1575                                 MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG |
1576                                 MPI2_SCSIIO_EEDPFLAGS_INSERT_OP);
1577                 }
1578                 io_request->Control |= cpu_to_le32((0x4 << 26));
1579                 io_request->EEDPBlockSize = cpu_to_le32(scp->device->sector_size);
1580         } else {
1581                 /* Some drives don't support 16/12 byte CDB's, convert to 10 */
1582                 if (((cdb_len == 12) || (cdb_len == 16)) &&
1583                     (start_blk <= 0xffffffff)) {
1584                         if (cdb_len == 16) {
1585                                 opcode = cdb[0] == READ_16 ? READ_10 : WRITE_10;
1586                                 flagvals = cdb[1];
1587                                 groupnum = cdb[14];
1588                                 control = cdb[15];
1589                         } else {
1590                                 opcode = cdb[0] == READ_12 ? READ_10 : WRITE_10;
1591                                 flagvals = cdb[1];
1592                                 groupnum = cdb[10];
1593                                 control = cdb[11];
1594                         }
1595
1596                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1597
1598                         cdb[0] = opcode;
1599                         cdb[1] = flagvals;
1600                         cdb[6] = groupnum;
1601                         cdb[9] = control;
1602
1603                         /* Transfer length */
1604                         cdb[8] = (u8)(num_blocks & 0xff);
1605                         cdb[7] = (u8)((num_blocks >> 8) & 0xff);
1606
1607                         io_request->IoFlags = cpu_to_le16(10); /* Specify 10-byte cdb */
1608                         cdb_len = 10;
1609                 } else if ((cdb_len < 16) && (start_blk > 0xffffffff)) {
1610                         /* Convert to 16 byte CDB for large LBA's */
1611                         switch (cdb_len) {
1612                         case 6:
1613                                 opcode = cdb[0] == READ_6 ? READ_16 : WRITE_16;
1614                                 control = cdb[5];
1615                                 break;
1616                         case 10:
1617                                 opcode =
1618                                         cdb[0] == READ_10 ? READ_16 : WRITE_16;
1619                                 flagvals = cdb[1];
1620                                 groupnum = cdb[6];
1621                                 control = cdb[9];
1622                                 break;
1623                         case 12:
1624                                 opcode =
1625                                         cdb[0] == READ_12 ? READ_16 : WRITE_16;
1626                                 flagvals = cdb[1];
1627                                 groupnum = cdb[10];
1628                                 control = cdb[11];
1629                                 break;
1630                         }
1631
1632                         memset(cdb, 0, sizeof(io_request->CDB.CDB32));
1633
1634                         cdb[0] = opcode;
1635                         cdb[1] = flagvals;
1636                         cdb[14] = groupnum;
1637                         cdb[15] = control;
1638
1639                         /* Transfer length */
1640                         cdb[13] = (u8)(num_blocks & 0xff);
1641                         cdb[12] = (u8)((num_blocks >> 8) & 0xff);
1642                         cdb[11] = (u8)((num_blocks >> 16) & 0xff);
1643                         cdb[10] = (u8)((num_blocks >> 24) & 0xff);
1644
1645                         io_request->IoFlags = cpu_to_le16(16); /* Specify 16-byte cdb */
1646                         cdb_len = 16;
1647                 }
1648
1649                 /* Normal case, just load LBA here */
1650                 switch (cdb_len) {
1651                 case 6:
1652                 {
1653                         u8 val = cdb[1] & 0xE0;
1654                         cdb[3] = (u8)(start_blk & 0xff);
1655                         cdb[2] = (u8)((start_blk >> 8) & 0xff);
1656                         cdb[1] = val | ((u8)(start_blk >> 16) & 0x1f);
1657                         break;
1658                 }
1659                 case 10:
1660                         cdb[5] = (u8)(start_blk & 0xff);
1661                         cdb[4] = (u8)((start_blk >> 8) & 0xff);
1662                         cdb[3] = (u8)((start_blk >> 16) & 0xff);
1663                         cdb[2] = (u8)((start_blk >> 24) & 0xff);
1664                         break;
1665                 case 12:
1666                         cdb[5]    = (u8)(start_blk & 0xff);
1667                         cdb[4]    = (u8)((start_blk >> 8) & 0xff);
1668                         cdb[3]    = (u8)((start_blk >> 16) & 0xff);
1669                         cdb[2]    = (u8)((start_blk >> 24) & 0xff);
1670                         break;
1671                 case 16:
1672                         cdb[9]    = (u8)(start_blk & 0xff);
1673                         cdb[8]    = (u8)((start_blk >> 8) & 0xff);
1674                         cdb[7]    = (u8)((start_blk >> 16) & 0xff);
1675                         cdb[6]    = (u8)((start_blk >> 24) & 0xff);
1676                         cdb[5]    = (u8)((start_blk >> 32) & 0xff);
1677                         cdb[4]    = (u8)((start_blk >> 40) & 0xff);
1678                         cdb[3]    = (u8)((start_blk >> 48) & 0xff);
1679                         cdb[2]    = (u8)((start_blk >> 56) & 0xff);
1680                         break;
1681                 }
1682         }
1683 }
1684
1685 /**
1686  * megasas_build_ldio_fusion -  Prepares IOs to devices
1687  * @instance:           Adapter soft state
1688  * @scp:                SCSI command
1689  * @cmd:                Command to be prepared
1690  *
1691  * Prepares the io_request and chain elements (sg_frame) for IO
1692  * The IO can be for PD (Fast Path) or LD
1693  */
1694 void
1695 megasas_build_ldio_fusion(struct megasas_instance *instance,
1696                           struct scsi_cmnd *scp,
1697                           struct megasas_cmd_fusion *cmd)
1698 {
1699         u8 fp_possible;
1700         u32 start_lba_lo, start_lba_hi, device_id, datalength = 0;
1701         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1702         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
1703         struct IO_REQUEST_INFO io_info;
1704         struct fusion_context *fusion;
1705         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1706         u8 *raidLUN;
1707
1708         device_id = MEGASAS_DEV_INDEX(scp);
1709
1710         fusion = instance->ctrl_context;
1711
1712         io_request = cmd->io_request;
1713         io_request->RaidContext.VirtualDiskTgtId = cpu_to_le16(device_id);
1714         io_request->RaidContext.status = 0;
1715         io_request->RaidContext.exStatus = 0;
1716
1717         req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
1718
1719         start_lba_lo = 0;
1720         start_lba_hi = 0;
1721         fp_possible = 0;
1722
1723         /*
1724          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1725          */
1726         if (scp->cmd_len == 6) {
1727                 datalength = (u32) scp->cmnd[4];
1728                 start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1729                         ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1730
1731                 start_lba_lo &= 0x1FFFFF;
1732         }
1733
1734         /*
1735          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1736          */
1737         else if (scp->cmd_len == 10) {
1738                 datalength = (u32) scp->cmnd[8] |
1739                         ((u32) scp->cmnd[7] << 8);
1740                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1741                         ((u32) scp->cmnd[3] << 16) |
1742                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1743         }
1744
1745         /*
1746          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1747          */
1748         else if (scp->cmd_len == 12) {
1749                 datalength = ((u32) scp->cmnd[6] << 24) |
1750                         ((u32) scp->cmnd[7] << 16) |
1751                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1752                 start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1753                         ((u32) scp->cmnd[3] << 16) |
1754                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1755         }
1756
1757         /*
1758          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1759          */
1760         else if (scp->cmd_len == 16) {
1761                 datalength = ((u32) scp->cmnd[10] << 24) |
1762                         ((u32) scp->cmnd[11] << 16) |
1763                         ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1764                 start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1765                         ((u32) scp->cmnd[7] << 16) |
1766                         ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1767
1768                 start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1769                         ((u32) scp->cmnd[3] << 16) |
1770                         ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1771         }
1772
1773         memset(&io_info, 0, sizeof(struct IO_REQUEST_INFO));
1774         io_info.ldStartBlock = ((u64)start_lba_hi << 32) | start_lba_lo;
1775         io_info.numBlocks = datalength;
1776         io_info.ldTgtId = device_id;
1777         io_request->DataLength = cpu_to_le32(scsi_bufflen(scp));
1778
1779         if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1780                 io_info.isRead = 1;
1781
1782         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1783
1784         if ((MR_TargetIdToLdGet(device_id, local_map_ptr) >=
1785                 instance->fw_supported_vd_count) || (!fusion->fast_path_io)) {
1786                 io_request->RaidContext.regLockFlags  = 0;
1787                 fp_possible = 0;
1788         } else {
1789                 if (MR_BuildRaidContext(instance, &io_info,
1790                                         &io_request->RaidContext,
1791                                         local_map_ptr, &raidLUN))
1792                         fp_possible = io_info.fpOkForIo;
1793         }
1794
1795         /* Use raw_smp_processor_id() for now until cmd->request->cpu is CPU
1796            id by default, not CPU group id, otherwise all MSI-X queues won't
1797            be utilized */
1798         cmd->request_desc->SCSIIO.MSIxIndex = instance->msix_vectors ?
1799                 raw_smp_processor_id() % instance->msix_vectors : 0;
1800
1801         if (fp_possible) {
1802                 megasas_set_pd_lba(io_request, scp->cmd_len, &io_info, scp,
1803                                    local_map_ptr, start_lba_lo);
1804                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1805                 cmd->request_desc->SCSIIO.RequestFlags =
1806                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO
1807                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1808                 if (fusion->adapter_type == INVADER_SERIES) {
1809                         if (io_request->RaidContext.regLockFlags ==
1810                             REGION_TYPE_UNUSED)
1811                                 cmd->request_desc->SCSIIO.RequestFlags =
1812                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1813                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1814                         io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1815                         io_request->RaidContext.nseg = 0x1;
1816                         io_request->IoFlags |= cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
1817                         io_request->RaidContext.regLockFlags |=
1818                           (MR_RL_FLAGS_GRANT_DESTINATION_CUDA |
1819                            MR_RL_FLAGS_SEQ_NUM_ENABLE);
1820                 }
1821                 if ((fusion->load_balance_info[device_id].loadBalanceFlag) &&
1822                     (io_info.isRead)) {
1823                         io_info.devHandle =
1824                                 get_updated_dev_handle(instance,
1825                                         &fusion->load_balance_info[device_id],
1826                                         &io_info);
1827                         scp->SCp.Status |= MEGASAS_LOAD_BALANCE_FLAG;
1828                         cmd->pd_r1_lb = io_info.pd_after_lb;
1829                 } else
1830                         scp->SCp.Status &= ~MEGASAS_LOAD_BALANCE_FLAG;
1831
1832                 if ((raidLUN[0] == 1) &&
1833                         (local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].validHandles > 1)) {
1834                         instance->dev_handle = !(instance->dev_handle);
1835                         io_info.devHandle =
1836                                 local_map_ptr->raidMap.devHndlInfo[io_info.pd_after_lb].devHandle[instance->dev_handle];
1837                 }
1838
1839                 cmd->request_desc->SCSIIO.DevHandle = io_info.devHandle;
1840                 io_request->DevHandle = io_info.devHandle;
1841                 /* populate the LUN field */
1842                 memcpy(io_request->LUN, raidLUN, 8);
1843         } else {
1844                 io_request->RaidContext.timeoutValue =
1845                         cpu_to_le16(local_map_ptr->raidMap.fpPdIoTimeoutSec);
1846                 cmd->request_desc->SCSIIO.RequestFlags =
1847                         (MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO
1848                          << MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1849                 if (fusion->adapter_type == INVADER_SERIES) {
1850                         if (io_info.do_fp_rlbypass ||
1851                                 (io_request->RaidContext.regLockFlags == REGION_TYPE_UNUSED))
1852                                 cmd->request_desc->SCSIIO.RequestFlags =
1853                                         (MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK <<
1854                                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1855                         io_request->RaidContext.Type = MPI2_TYPE_CUDA;
1856                         io_request->RaidContext.regLockFlags |=
1857                                 (MR_RL_FLAGS_GRANT_DESTINATION_CPU0 |
1858                                  MR_RL_FLAGS_SEQ_NUM_ENABLE);
1859                         io_request->RaidContext.nseg = 0x1;
1860                 }
1861                 io_request->Function = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1862                 io_request->DevHandle = cpu_to_le16(device_id);
1863         } /* Not FP */
1864 }
1865
1866 /**
1867  * megasas_build_ld_nonrw_fusion - prepares non rw ios for virtual disk
1868  * @instance:           Adapter soft state
1869  * @scp:                SCSI command
1870  * @cmd:                Command to be prepared
1871  *
1872  * Prepares the io_request frame for non-rw io cmds for vd.
1873  */
1874 static void megasas_build_ld_nonrw_fusion(struct megasas_instance *instance,
1875                           struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd)
1876 {
1877         u32 device_id;
1878         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1879         u16 pd_index = 0;
1880         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1881         struct fusion_context *fusion = instance->ctrl_context;
1882         u8                          span, physArm;
1883         __le16                      devHandle;
1884         u32                         ld, arRef, pd;
1885         struct MR_LD_RAID                  *raid;
1886         struct RAID_CONTEXT                *pRAID_Context;
1887         u8 fp_possible = 1;
1888
1889         io_request = cmd->io_request;
1890         device_id = MEGASAS_DEV_INDEX(scmd);
1891         pd_index = MEGASAS_PD_INDEX(scmd);
1892         local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1893         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1894         /* get RAID_Context pointer */
1895         pRAID_Context = &io_request->RaidContext;
1896         /* Check with FW team */
1897         pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
1898         pRAID_Context->regLockRowLBA    = 0;
1899         pRAID_Context->regLockLength    = 0;
1900
1901         if (fusion->fast_path_io && (
1902                 device_id < instance->fw_supported_vd_count)) {
1903
1904                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1905                 if (ld >= instance->fw_supported_vd_count - 1)
1906                         fp_possible = 0;
1907
1908                 raid = MR_LdRaidGet(ld, local_map_ptr);
1909                 if (!(raid->capability.fpNonRWCapable))
1910                         fp_possible = 0;
1911         } else
1912                 fp_possible = 0;
1913
1914         if (!fp_possible) {
1915                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
1916                 io_request->DevHandle = cpu_to_le16(device_id);
1917                 io_request->LUN[1] = scmd->device->lun;
1918                 pRAID_Context->timeoutValue =
1919                         cpu_to_le16 (scmd->request->timeout / HZ);
1920                 cmd->request_desc->SCSIIO.RequestFlags =
1921                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
1922                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1923         } else {
1924
1925                 /* set RAID context values */
1926                 pRAID_Context->configSeqNum = raid->seqNum;
1927                 pRAID_Context->regLockFlags = REGION_TYPE_SHARED_READ;
1928                 pRAID_Context->timeoutValue = cpu_to_le16(raid->fpIoTimeoutForLd);
1929
1930                 /* get the DevHandle for the PD (since this is
1931                    fpNonRWCapable, this is a single disk RAID0) */
1932                 span = physArm = 0;
1933                 arRef = MR_LdSpanArrayGet(ld, span, local_map_ptr);
1934                 pd = MR_ArPdGet(arRef, physArm, local_map_ptr);
1935                 devHandle = MR_PdDevHandleGet(pd, local_map_ptr);
1936
1937                 /* build request descriptor */
1938                 cmd->request_desc->SCSIIO.RequestFlags =
1939                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
1940                         MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
1941                 cmd->request_desc->SCSIIO.DevHandle = devHandle;
1942
1943                 /* populate the LUN field */
1944                 memcpy(io_request->LUN, raid->LUN, 8);
1945
1946                 /* build the raidScsiIO structure */
1947                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
1948                 io_request->DevHandle = devHandle;
1949         }
1950 }
1951
1952 /**
1953  * megasas_build_syspd_fusion - prepares rw/non-rw ios for syspd
1954  * @instance:           Adapter soft state
1955  * @scp:                SCSI command
1956  * @cmd:                Command to be prepared
1957  * @fp_possible:        parameter to detect fast path or firmware path io.
1958  *
1959  * Prepares the io_request frame for rw/non-rw io cmds for syspds
1960  */
1961 static void
1962 megasas_build_syspd_fusion(struct megasas_instance *instance,
1963         struct scsi_cmnd *scmd, struct megasas_cmd_fusion *cmd,
1964         bool fp_possible)
1965 {
1966         u32 device_id;
1967         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1968         u16 pd_index = 0;
1969         u16 os_timeout_value;
1970         u16 timeout_limit;
1971         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1972         struct RAID_CONTEXT     *pRAID_Context;
1973         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1974         struct fusion_context *fusion = instance->ctrl_context;
1975         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
1976
1977         device_id = MEGASAS_DEV_INDEX(scmd);
1978         pd_index = MEGASAS_PD_INDEX(scmd);
1979         os_timeout_value = scmd->request->timeout / HZ;
1980
1981         io_request = cmd->io_request;
1982         /* get RAID_Context pointer */
1983         pRAID_Context = &io_request->RaidContext;
1984         pRAID_Context->regLockFlags = 0;
1985         pRAID_Context->regLockRowLBA = 0;
1986         pRAID_Context->regLockLength = 0;
1987         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1988         io_request->LUN[1] = scmd->device->lun;
1989         pRAID_Context->RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
1990                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1991
1992         /* If FW supports PD sequence number */
1993         if (instance->use_seqnum_jbod_fp &&
1994                 instance->pd_list[pd_index].driveType == TYPE_DISK) {
1995                 /* TgtId must be incremented by 255 as jbod seq number is index
1996                  * below raid map
1997                  */
1998                 pRAID_Context->VirtualDiskTgtId =
1999                         cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
2000                 pRAID_Context->configSeqNum = pd_sync->seq[pd_index].seqNum;
2001                 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
2002                 pRAID_Context->regLockFlags |=
2003                         (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
2004                 pRAID_Context->Type = MPI2_TYPE_CUDA;
2005                 pRAID_Context->nseg = 0x1;
2006         } else if (fusion->fast_path_io) {
2007                 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2008                 pRAID_Context->configSeqNum = 0;
2009                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2010                 io_request->DevHandle =
2011                         local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
2012         } else {
2013                 /* Want to send all IO via FW path */
2014                 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2015                 pRAID_Context->configSeqNum = 0;
2016                 io_request->DevHandle = cpu_to_le16(0xFFFF);
2017         }
2018
2019         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
2020         cmd->request_desc->SCSIIO.MSIxIndex =
2021                 instance->msix_vectors ?
2022                 (raw_smp_processor_id() % instance->msix_vectors) : 0;
2023
2024
2025         if (!fp_possible) {
2026                 /* system pd firmware path */
2027                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2028                 cmd->request_desc->SCSIIO.RequestFlags =
2029                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2030                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2031                 pRAID_Context->timeoutValue = cpu_to_le16(os_timeout_value);
2032                 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2033         } else {
2034                 if (os_timeout_value)
2035                         os_timeout_value++;
2036
2037                 /* system pd Fast Path */
2038                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2039                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
2040                                 255 : 0xFFFF;
2041                 pRAID_Context->timeoutValue =
2042                         cpu_to_le16((os_timeout_value > timeout_limit) ?
2043                         timeout_limit : os_timeout_value);
2044                 if (fusion->adapter_type == INVADER_SERIES)
2045                         io_request->IoFlags |=
2046                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2047
2048                 cmd->request_desc->SCSIIO.RequestFlags =
2049                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2050                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2051         }
2052 }
2053
2054 /**
2055  * megasas_build_io_fusion -    Prepares IOs to devices
2056  * @instance:           Adapter soft state
2057  * @scp:                SCSI command
2058  * @cmd:                Command to be prepared
2059  *
2060  * Invokes helper functions to prepare request frames
2061  * and sets flags appropriate for IO/Non-IO cmd
2062  */
2063 int
2064 megasas_build_io_fusion(struct megasas_instance *instance,
2065                         struct scsi_cmnd *scp,
2066                         struct megasas_cmd_fusion *cmd)
2067 {
2068         u16 sge_count;
2069         u8  cmd_type;
2070         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
2071         struct MR_PRIV_DEVICE *mr_device_priv_data;
2072         mr_device_priv_data = scp->device->hostdata;
2073
2074         /* Zero out some fields so they don't get reused */
2075         memset(io_request->LUN, 0x0, 8);
2076         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
2077         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
2078         io_request->EEDPFlags = 0;
2079         io_request->Control = 0;
2080         io_request->EEDPBlockSize = 0;
2081         io_request->ChainOffset = 0;
2082         io_request->RaidContext.RAIDFlags = 0;
2083         io_request->RaidContext.Type = 0;
2084         io_request->RaidContext.nseg = 0;
2085
2086         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
2087         /*
2088          * Just the CDB length,rest of the Flags are zero
2089          * This will be modified for FP in build_ldio_fusion
2090          */
2091         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
2092
2093         switch (cmd_type = megasas_cmd_type(scp)) {
2094         case READ_WRITE_LDIO:
2095                 megasas_build_ldio_fusion(instance, scp, cmd);
2096                 break;
2097         case NON_READ_WRITE_LDIO:
2098                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
2099                 break;
2100         case READ_WRITE_SYSPDIO:
2101                 megasas_build_syspd_fusion(instance, scp, cmd, true);
2102                 break;
2103         case NON_READ_WRITE_SYSPDIO:
2104                 if (instance->secure_jbod_support ||
2105                     mr_device_priv_data->is_tm_capable)
2106                         megasas_build_syspd_fusion(instance, scp, cmd, false);
2107                 else
2108                         megasas_build_syspd_fusion(instance, scp, cmd, true);
2109                 break;
2110         default:
2111                 break;
2112         }
2113
2114         /*
2115          * Construct SGL
2116          */
2117
2118         sge_count =
2119                 megasas_make_sgl_fusion(instance, scp,
2120                                         (struct MPI25_IEEE_SGE_CHAIN64 *)
2121                                         &io_request->SGL, cmd);
2122
2123         if (sge_count > instance->max_num_sge) {
2124                 dev_err(&instance->pdev->dev, "Error. sge_count (0x%x) exceeds "
2125                        "max (0x%x) allowed\n", sge_count,
2126                        instance->max_num_sge);
2127                 return 1;
2128         }
2129
2130         /* numSGE store lower 8 bit of sge_count.
2131          * numSGEExt store higher 8 bit of sge_count
2132          */
2133         io_request->RaidContext.numSGE = sge_count;
2134         io_request->RaidContext.numSGEExt = (u8)(sge_count >> 8);
2135
2136         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
2137
2138         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
2139                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
2140         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2141                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
2142
2143         io_request->SGLOffset0 =
2144                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
2145
2146         io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
2147         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
2148
2149         cmd->scmd = scp;
2150         scp->SCp.ptr = (char *)cmd;
2151
2152         return 0;
2153 }
2154
2155 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2156 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
2157 {
2158         u8 *p;
2159         struct fusion_context *fusion;
2160
2161         if (index >= instance->max_fw_cmds) {
2162                 dev_err(&instance->pdev->dev, "Invalid SMID (0x%x)request for "
2163                        "descriptor for scsi%d\n", index,
2164                         instance->host->host_no);
2165                 return NULL;
2166         }
2167         fusion = instance->ctrl_context;
2168         p = fusion->req_frames_desc
2169                 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
2170
2171         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
2172 }
2173
2174 /**
2175  * megasas_build_and_issue_cmd_fusion -Main routine for building and
2176  *                                     issuing non IOCTL cmd
2177  * @instance:                   Adapter soft state
2178  * @scmd:                       pointer to scsi cmd from OS
2179  */
2180 static u32
2181 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
2182                                    struct scsi_cmnd *scmd)
2183 {
2184         struct megasas_cmd_fusion *cmd;
2185         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2186         u32 index;
2187         struct fusion_context *fusion;
2188
2189         fusion = instance->ctrl_context;
2190
2191         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
2192                 instance->ldio_threshold &&
2193                 (atomic_inc_return(&instance->ldio_outstanding) >
2194                 instance->ldio_threshold)) {
2195                 atomic_dec(&instance->ldio_outstanding);
2196                 return SCSI_MLQUEUE_DEVICE_BUSY;
2197         }
2198
2199         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
2200
2201         index = cmd->index;
2202
2203         req_desc = megasas_get_request_descriptor(instance, index-1);
2204         if (!req_desc)
2205                 return SCSI_MLQUEUE_HOST_BUSY;
2206
2207         req_desc->Words = 0;
2208         cmd->request_desc = req_desc;
2209
2210         if (megasas_build_io_fusion(instance, scmd, cmd)) {
2211                 megasas_return_cmd_fusion(instance, cmd);
2212                 dev_err(&instance->pdev->dev, "Error building command\n");
2213                 cmd->request_desc = NULL;
2214                 return SCSI_MLQUEUE_HOST_BUSY;
2215         }
2216
2217         req_desc = cmd->request_desc;
2218         req_desc->SCSIIO.SMID = cpu_to_le16(index);
2219
2220         if (cmd->io_request->ChainOffset != 0 &&
2221             cmd->io_request->ChainOffset != 0xF)
2222                 dev_err(&instance->pdev->dev, "The chain offset value is not "
2223                        "correct : %x\n", cmd->io_request->ChainOffset);
2224
2225         /*
2226          * Issue the command to the FW
2227          */
2228         atomic_inc(&instance->fw_outstanding);
2229
2230         megasas_fire_cmd_fusion(instance, req_desc);
2231
2232         return 0;
2233 }
2234
2235 /**
2236  * complete_cmd_fusion -        Completes command
2237  * @instance:                   Adapter soft state
2238  * Completes all commands that is in reply descriptor queue
2239  */
2240 int
2241 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
2242 {
2243         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
2244         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
2245         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
2246         struct fusion_context *fusion;
2247         struct megasas_cmd *cmd_mfi;
2248         struct megasas_cmd_fusion *cmd_fusion;
2249         u16 smid, num_completed;
2250         u8 reply_descript_type;
2251         u32 status, extStatus, device_id;
2252         union desc_value d_val;
2253         struct LD_LOAD_BALANCE_INFO *lbinfo;
2254         int threshold_reply_count = 0;
2255         struct scsi_cmnd *scmd_local = NULL;
2256         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
2257         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
2258
2259         fusion = instance->ctrl_context;
2260
2261         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2262                 return IRQ_HANDLED;
2263
2264         desc = fusion->reply_frames_desc[MSIxIndex] +
2265                                 fusion->last_reply_idx[MSIxIndex];
2266
2267         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2268
2269         d_val.word = desc->Words;
2270
2271         reply_descript_type = reply_desc->ReplyFlags &
2272                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2273
2274         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2275                 return IRQ_NONE;
2276
2277         num_completed = 0;
2278
2279         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
2280                d_val.u.high != cpu_to_le32(UINT_MAX)) {
2281                 smid = le16_to_cpu(reply_desc->SMID);
2282
2283                 cmd_fusion = fusion->cmd_list[smid - 1];
2284
2285                 scsi_io_req =
2286                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
2287                   cmd_fusion->io_request;
2288
2289                 if (cmd_fusion->scmd)
2290                         cmd_fusion->scmd->SCp.ptr = NULL;
2291
2292                 scmd_local = cmd_fusion->scmd;
2293                 status = scsi_io_req->RaidContext.status;
2294                 extStatus = scsi_io_req->RaidContext.exStatus;
2295
2296                 switch (scsi_io_req->Function) {
2297                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
2298                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
2299                                                 cmd_fusion->io_request;
2300                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
2301                                                 &mr_tm_req->TmRequest;
2302                         dev_dbg(&instance->pdev->dev, "TM completion:"
2303                                 "type: 0x%x TaskMID: 0x%x\n",
2304                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
2305                         complete(&cmd_fusion->done);
2306                         break;
2307                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
2308                         /* Update load balancing info */
2309                         device_id = MEGASAS_DEV_INDEX(scmd_local);
2310                         lbinfo = &fusion->load_balance_info[device_id];
2311                         if (cmd_fusion->scmd->SCp.Status &
2312                             MEGASAS_LOAD_BALANCE_FLAG) {
2313                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
2314                                 cmd_fusion->scmd->SCp.Status &=
2315                                         ~MEGASAS_LOAD_BALANCE_FLAG;
2316                         }
2317                         if (reply_descript_type ==
2318                             MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
2319                                 if (megasas_dbg_lvl == 5)
2320                                         dev_err(&instance->pdev->dev, "\nFAST Path "
2321                                                "IO Success\n");
2322                         }
2323                         /* Fall thru and complete IO */
2324                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
2325                         /* Map the FW Cmd Status */
2326                         map_cmd_status(cmd_fusion, status, extStatus);
2327                         scsi_io_req->RaidContext.status = 0;
2328                         scsi_io_req->RaidContext.exStatus = 0;
2329                         if (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
2330                                 atomic_dec(&instance->ldio_outstanding);
2331                         megasas_return_cmd_fusion(instance, cmd_fusion);
2332                         scsi_dma_unmap(scmd_local);
2333                         scmd_local->scsi_done(scmd_local);
2334                         atomic_dec(&instance->fw_outstanding);
2335
2336                         break;
2337                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
2338                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2339
2340                         /* Poll mode. Dummy free.
2341                          * In case of Interrupt mode, caller has reverse check.
2342                          */
2343                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
2344                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
2345                                 megasas_return_cmd(instance, cmd_mfi);
2346                         } else
2347                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2348                         break;
2349                 }
2350
2351                 fusion->last_reply_idx[MSIxIndex]++;
2352                 if (fusion->last_reply_idx[MSIxIndex] >=
2353                     fusion->reply_q_depth)
2354                         fusion->last_reply_idx[MSIxIndex] = 0;
2355
2356                 desc->Words = cpu_to_le64(ULLONG_MAX);
2357                 num_completed++;
2358                 threshold_reply_count++;
2359
2360                 /* Get the next reply descriptor */
2361                 if (!fusion->last_reply_idx[MSIxIndex])
2362                         desc = fusion->reply_frames_desc[MSIxIndex];
2363                 else
2364                         desc++;
2365
2366                 reply_desc =
2367                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2368
2369                 d_val.word = desc->Words;
2370
2371                 reply_descript_type = reply_desc->ReplyFlags &
2372                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2373
2374                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2375                         break;
2376                 /*
2377                  * Write to reply post host index register after completing threshold
2378                  * number of reply counts and still there are more replies in reply queue
2379                  * pending to be completed
2380                  */
2381                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
2382                         if (fusion->adapter_type == INVADER_SERIES)
2383                                 writel(((MSIxIndex & 0x7) << 24) |
2384                                         fusion->last_reply_idx[MSIxIndex],
2385                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
2386                         else
2387                                 writel((MSIxIndex << 24) |
2388                                         fusion->last_reply_idx[MSIxIndex],
2389                                         instance->reply_post_host_index_addr[0]);
2390                         threshold_reply_count = 0;
2391                 }
2392         }
2393
2394         if (!num_completed)
2395                 return IRQ_NONE;
2396
2397         wmb();
2398         if (fusion->adapter_type == INVADER_SERIES)
2399                 writel(((MSIxIndex & 0x7) << 24) |
2400                         fusion->last_reply_idx[MSIxIndex],
2401                         instance->reply_post_host_index_addr[MSIxIndex/8]);
2402         else
2403                 writel((MSIxIndex << 24) |
2404                         fusion->last_reply_idx[MSIxIndex],
2405                         instance->reply_post_host_index_addr[0]);
2406         megasas_check_and_restore_queue_depth(instance);
2407         return IRQ_HANDLED;
2408 }
2409
2410 /**
2411  * megasas_complete_cmd_dpc_fusion -    Completes command
2412  * @instance:                   Adapter soft state
2413  *
2414  * Tasklet to complete cmds
2415  */
2416 void
2417 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
2418 {
2419         struct megasas_instance *instance =
2420                 (struct megasas_instance *)instance_addr;
2421         unsigned long flags;
2422         u32 count, MSIxIndex;
2423
2424         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2425
2426         /* If we have already declared adapter dead, donot complete cmds */
2427         spin_lock_irqsave(&instance->hba_lock, flags);
2428         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2429                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2430                 return;
2431         }
2432         spin_unlock_irqrestore(&instance->hba_lock, flags);
2433
2434         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
2435                 complete_cmd_fusion(instance, MSIxIndex);
2436 }
2437
2438 /**
2439  * megasas_isr_fusion - isr entry point
2440  */
2441 irqreturn_t megasas_isr_fusion(int irq, void *devp)
2442 {
2443         struct megasas_irq_context *irq_context = devp;
2444         struct megasas_instance *instance = irq_context->instance;
2445         u32 mfiStatus, fw_state, dma_state;
2446
2447         if (instance->mask_interrupts)
2448                 return IRQ_NONE;
2449
2450         if (!instance->msix_vectors) {
2451                 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
2452                 if (!mfiStatus)
2453                         return IRQ_NONE;
2454         }
2455
2456         /* If we are resetting, bail */
2457         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
2458                 instance->instancet->clear_intr(instance->reg_set);
2459                 return IRQ_HANDLED;
2460         }
2461
2462         if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
2463                 instance->instancet->clear_intr(instance->reg_set);
2464                 /* If we didn't complete any commands, check for FW fault */
2465                 fw_state = instance->instancet->read_fw_status_reg(
2466                         instance->reg_set) & MFI_STATE_MASK;
2467                 dma_state = instance->instancet->read_fw_status_reg
2468                         (instance->reg_set) & MFI_STATE_DMADONE;
2469                 if (instance->crash_dump_drv_support &&
2470                         instance->crash_dump_app_support) {
2471                         /* Start collecting crash, if DMA bit is done */
2472                         if ((fw_state == MFI_STATE_FAULT) && dma_state)
2473                                 schedule_work(&instance->crash_init);
2474                         else if (fw_state == MFI_STATE_FAULT)
2475                                 schedule_work(&instance->work_init);
2476                 } else if (fw_state == MFI_STATE_FAULT) {
2477                         dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt"
2478                                "for scsi%d\n", instance->host->host_no);
2479                         schedule_work(&instance->work_init);
2480                 }
2481         }
2482
2483         return IRQ_HANDLED;
2484 }
2485
2486 /**
2487  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
2488  * @instance:                   Adapter soft state
2489  * mfi_cmd:                     megasas_cmd pointer
2490  *
2491  */
2492 u8
2493 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
2494                         struct megasas_cmd *mfi_cmd)
2495 {
2496         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
2497         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
2498         struct megasas_cmd_fusion *cmd;
2499         struct fusion_context *fusion;
2500         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
2501
2502         fusion = instance->ctrl_context;
2503
2504         cmd = megasas_get_cmd_fusion(instance,
2505                         instance->max_scsi_cmds + mfi_cmd->index);
2506
2507         /*  Save the smid. To be used for returning the cmd */
2508         mfi_cmd->context.smid = cmd->index;
2509
2510         /*
2511          * For cmds where the flag is set, store the flag and check
2512          * on completion. For cmds with this flag, don't call
2513          * megasas_complete_cmd
2514          */
2515
2516         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
2517                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
2518
2519         io_req = cmd->io_request;
2520
2521         if (fusion->adapter_type == INVADER_SERIES) {
2522                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
2523                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
2524                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2525                 sgl_ptr_end->Flags = 0;
2526         }
2527
2528         mpi25_ieee_chain =
2529           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
2530
2531         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
2532         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
2533                                        SGL) / 4;
2534         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
2535
2536         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
2537
2538         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2539                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
2540
2541         mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz);
2542
2543         return 0;
2544 }
2545
2546 /**
2547  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
2548  * @instance:                   Adapter soft state
2549  * @cmd:                        mfi cmd to build
2550  *
2551  */
2552 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2553 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
2554 {
2555         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2556         u16 index;
2557
2558         if (build_mpt_mfi_pass_thru(instance, cmd)) {
2559                 dev_err(&instance->pdev->dev, "Couldn't build MFI pass thru cmd\n");
2560                 return NULL;
2561         }
2562
2563         index = cmd->context.smid;
2564
2565         req_desc = megasas_get_request_descriptor(instance, index - 1);
2566
2567         if (!req_desc)
2568                 return NULL;
2569
2570         req_desc->Words = 0;
2571         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2572                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2573
2574         req_desc->SCSIIO.SMID = cpu_to_le16(index);
2575
2576         return req_desc;
2577 }
2578
2579 /**
2580  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
2581  * @instance:                   Adapter soft state
2582  * @cmd:                        mfi cmd pointer
2583  *
2584  */
2585 int
2586 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
2587                           struct megasas_cmd *cmd)
2588 {
2589         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2590
2591         req_desc = build_mpt_cmd(instance, cmd);
2592         if (!req_desc) {
2593                 dev_info(&instance->pdev->dev, "Failed from %s %d\n",
2594                                         __func__, __LINE__);
2595                 return DCMD_NOT_FIRED;
2596         }
2597
2598         megasas_fire_cmd_fusion(instance, req_desc);
2599         return DCMD_SUCCESS;
2600 }
2601
2602 /**
2603  * megasas_release_fusion -     Reverses the FW initialization
2604  * @instance:                   Adapter soft state
2605  */
2606 void
2607 megasas_release_fusion(struct megasas_instance *instance)
2608 {
2609         megasas_free_cmds(instance);
2610         megasas_free_cmds_fusion(instance);
2611
2612         iounmap(instance->reg_set);
2613
2614         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
2615 }
2616
2617 /**
2618  * megasas_read_fw_status_reg_fusion - returns the current FW status value
2619  * @regs:                       MFI register set
2620  */
2621 static u32
2622 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
2623 {
2624         return readl(&(regs)->outbound_scratch_pad);
2625 }
2626
2627 /**
2628  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
2629  * @instance:                           Controller's soft instance
2630  * return:                              Number of allocated host crash buffers
2631  */
2632 static void
2633 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
2634 {
2635         unsigned int i;
2636
2637         instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE);
2638         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
2639                 instance->crash_buf[i] = (void  *)__get_free_pages(GFP_KERNEL,
2640                                 instance->crash_buf_pages);
2641                 if (!instance->crash_buf[i]) {
2642                         dev_info(&instance->pdev->dev, "Firmware crash dump "
2643                                 "memory allocation failed at index %d\n", i);
2644                         break;
2645                 }
2646                 memset(instance->crash_buf[i], 0,
2647                         ((1 << PAGE_SHIFT) << instance->crash_buf_pages));
2648         }
2649         instance->drv_buf_alloc = i;
2650 }
2651
2652 /**
2653  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
2654  * @instance:                           Controller's soft instance
2655  */
2656 void
2657 megasas_free_host_crash_buffer(struct megasas_instance *instance)
2658 {
2659         unsigned int i
2660 ;
2661         for (i = 0; i < instance->drv_buf_alloc; i++) {
2662                 if (instance->crash_buf[i])
2663                         free_pages((ulong)instance->crash_buf[i],
2664                                         instance->crash_buf_pages);
2665         }
2666         instance->drv_buf_index = 0;
2667         instance->drv_buf_alloc = 0;
2668         instance->fw_crash_state = UNAVAILABLE;
2669         instance->fw_crash_buffer_size = 0;
2670 }
2671
2672 /**
2673  * megasas_adp_reset_fusion -   For controller reset
2674  * @regs:                               MFI register set
2675  */
2676 static int
2677 megasas_adp_reset_fusion(struct megasas_instance *instance,
2678                          struct megasas_register_set __iomem *regs)
2679 {
2680         u32 host_diag, abs_state, retry;
2681
2682         /* Now try to reset the chip */
2683         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2684         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2685         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2686         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2687         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2688         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2689         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2690
2691         /* Check that the diag write enable (DRWE) bit is on */
2692         host_diag = readl(&instance->reg_set->fusion_host_diag);
2693         retry = 0;
2694         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2695                 msleep(100);
2696                 host_diag = readl(&instance->reg_set->fusion_host_diag);
2697                 if (retry++ == 100) {
2698                         dev_warn(&instance->pdev->dev,
2699                                 "Host diag unlock failed from %s %d\n",
2700                                 __func__, __LINE__);
2701                         break;
2702                 }
2703         }
2704         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2705                 return -1;
2706
2707         /* Send chip reset command */
2708         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2709                 &instance->reg_set->fusion_host_diag);
2710         msleep(3000);
2711
2712         /* Make sure reset adapter bit is cleared */
2713         host_diag = readl(&instance->reg_set->fusion_host_diag);
2714         retry = 0;
2715         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2716                 msleep(100);
2717                 host_diag = readl(&instance->reg_set->fusion_host_diag);
2718                 if (retry++ == 1000) {
2719                         dev_warn(&instance->pdev->dev,
2720                                 "Diag reset adapter never cleared %s %d\n",
2721                                 __func__, __LINE__);
2722                         break;
2723                 }
2724         }
2725         if (host_diag & HOST_DIAG_RESET_ADAPTER)
2726                 return -1;
2727
2728         abs_state = instance->instancet->read_fw_status_reg(instance->reg_set)
2729                         & MFI_STATE_MASK;
2730         retry = 0;
2731
2732         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
2733                 msleep(100);
2734                 abs_state = instance->instancet->
2735                         read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2736         }
2737         if (abs_state <= MFI_STATE_FW_INIT) {
2738                 dev_warn(&instance->pdev->dev,
2739                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
2740                         abs_state, __func__, __LINE__);
2741                 return -1;
2742         }
2743
2744         return 0;
2745 }
2746
2747 /**
2748  * megasas_check_reset_fusion - For controller reset check
2749  * @regs:                               MFI register set
2750  */
2751 static int
2752 megasas_check_reset_fusion(struct megasas_instance *instance,
2753                            struct megasas_register_set __iomem *regs)
2754 {
2755         return 0;
2756 }
2757
2758 /* This function waits for outstanding commands on fusion to complete */
2759 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
2760                                         int reason, int *convert)
2761 {
2762         int i, outstanding, retval = 0, hb_seconds_missed = 0;
2763         u32 fw_state;
2764
2765         for (i = 0; i < resetwaittime; i++) {
2766                 /* Check if firmware is in fault state */
2767                 fw_state = instance->instancet->read_fw_status_reg(
2768                         instance->reg_set) & MFI_STATE_MASK;
2769                 if (fw_state == MFI_STATE_FAULT) {
2770                         dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
2771                                " will reset adapter scsi%d.\n",
2772                                 instance->host->host_no);
2773                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
2774                         retval = 1;
2775                         goto out;
2776                 }
2777
2778                 if (reason == MFI_IO_TIMEOUT_OCR) {
2779                         dev_info(&instance->pdev->dev,
2780                                 "MFI IO is timed out, initiating OCR\n");
2781                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
2782                         retval = 1;
2783                         goto out;
2784                 }
2785
2786                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
2787                 if (instance->requestorId && !reason) {
2788                         retval = 1;
2789                         goto out;
2790                 }
2791
2792                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
2793                 if (instance->requestorId && reason) {
2794                         if (instance->hb_host_mem->HB.fwCounter !=
2795                             instance->hb_host_mem->HB.driverCounter) {
2796                                 instance->hb_host_mem->HB.driverCounter =
2797                                         instance->hb_host_mem->HB.fwCounter;
2798                                 hb_seconds_missed = 0;
2799                         } else {
2800                                 hb_seconds_missed++;
2801                                 if (hb_seconds_missed ==
2802                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
2803                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
2804                                                " Heartbeat never completed "
2805                                                " while polling during I/O "
2806                                                " timeout handling for "
2807                                                "scsi%d.\n",
2808                                                instance->host->host_no);
2809                                                *convert = 1;
2810                                                retval = 1;
2811                                                goto out;
2812                                 }
2813                         }
2814                 }
2815
2816                 outstanding = atomic_read(&instance->fw_outstanding);
2817                 if (!outstanding)
2818                         goto out;
2819
2820                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2821                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2822                                "commands to complete for scsi%d\n", i,
2823                                outstanding, instance->host->host_no);
2824                         megasas_complete_cmd_dpc_fusion(
2825                                 (unsigned long)instance);
2826                 }
2827                 msleep(1000);
2828         }
2829
2830         if (atomic_read(&instance->fw_outstanding)) {
2831                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
2832                        "will reset adapter scsi%d.\n",
2833                        instance->host->host_no);
2834                 *convert = 1;
2835                 retval = 1;
2836         }
2837 out:
2838         return retval;
2839 }
2840
2841 void  megasas_reset_reply_desc(struct megasas_instance *instance)
2842 {
2843         int i, j, count;
2844         struct fusion_context *fusion;
2845         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2846
2847         fusion = instance->ctrl_context;
2848         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2849         for (i = 0 ; i < count ; i++) {
2850                 fusion->last_reply_idx[i] = 0;
2851                 reply_desc = fusion->reply_frames_desc[i];
2852                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
2853                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
2854         }
2855 }
2856
2857 /*
2858  * megasas_refire_mgmt_cmd :    Re-fire management commands
2859  * @instance:                           Controller's soft instance
2860 */
2861 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
2862 {
2863         int j;
2864         struct megasas_cmd_fusion *cmd_fusion;
2865         struct fusion_context *fusion;
2866         struct megasas_cmd *cmd_mfi;
2867         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2868         u16 smid;
2869         bool refire_cmd = 0;
2870
2871         fusion = instance->ctrl_context;
2872
2873         /* Re-fire management commands.
2874          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
2875          */
2876         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
2877                 cmd_fusion = fusion->cmd_list[j];
2878                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2879                 smid = le16_to_cpu(cmd_mfi->context.smid);
2880
2881                 if (!smid)
2882                         continue;
2883                 req_desc = megasas_get_request_descriptor
2884                                         (instance, smid - 1);
2885                 refire_cmd = req_desc && ((cmd_mfi->frame->dcmd.opcode !=
2886                                 cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) &&
2887                                  (cmd_mfi->frame->dcmd.opcode !=
2888                                 cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO)))
2889                                 && !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
2890                 if (refire_cmd)
2891                         megasas_fire_cmd_fusion(instance, req_desc);
2892                 else
2893                         megasas_return_cmd(instance, cmd_mfi);
2894         }
2895 }
2896
2897 /*
2898  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
2899  * @instance: per adapter struct
2900  * @channel: the channel assigned by the OS
2901  * @id: the id assigned by the OS
2902  *
2903  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
2904  */
2905
2906 static int megasas_track_scsiio(struct megasas_instance *instance,
2907                 int id, int channel)
2908 {
2909         int i, found = 0;
2910         struct megasas_cmd_fusion *cmd_fusion;
2911         struct fusion_context *fusion;
2912         fusion = instance->ctrl_context;
2913
2914         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
2915                 cmd_fusion = fusion->cmd_list[i];
2916                 if (cmd_fusion->scmd &&
2917                         (cmd_fusion->scmd->device->id == id &&
2918                         cmd_fusion->scmd->device->channel == channel)) {
2919                         dev_info(&instance->pdev->dev,
2920                                 "SCSI commands pending to target"
2921                                 "channel %d id %d \tSMID: 0x%x\n",
2922                                 channel, id, cmd_fusion->index);
2923                         scsi_print_command(cmd_fusion->scmd);
2924                         found = 1;
2925                         break;
2926                 }
2927         }
2928
2929         return found ? FAILED : SUCCESS;
2930 }
2931
2932 /**
2933  * megasas_tm_response_code - translation of device response code
2934  * @ioc: per adapter object
2935  * @mpi_reply: MPI reply returned by firmware
2936  *
2937  * Return nothing.
2938  */
2939 static void
2940 megasas_tm_response_code(struct megasas_instance *instance,
2941                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
2942 {
2943         char *desc;
2944
2945         switch (mpi_reply->ResponseCode) {
2946         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
2947                 desc = "task management request completed";
2948                 break;
2949         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
2950                 desc = "invalid frame";
2951                 break;
2952         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2953                 desc = "task management request not supported";
2954                 break;
2955         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
2956                 desc = "task management request failed";
2957                 break;
2958         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2959                 desc = "task management request succeeded";
2960                 break;
2961         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2962                 desc = "invalid lun";
2963                 break;
2964         case 0xA:
2965                 desc = "overlapped tag attempted";
2966                 break;
2967         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2968                 desc = "task queued, however not sent to target";
2969                 break;
2970         default:
2971                 desc = "unknown";
2972                 break;
2973         }
2974         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
2975                 mpi_reply->ResponseCode, desc);
2976         dev_dbg(&instance->pdev->dev,
2977                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
2978                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
2979                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
2980                 mpi_reply->Function, mpi_reply->TaskType,
2981                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
2982 }
2983
2984 /**
2985  * megasas_issue_tm - main routine for sending tm requests
2986  * @instance: per adapter struct
2987  * @device_handle: device handle
2988  * @channel: the channel assigned by the OS
2989  * @id: the id assigned by the OS
2990  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
2991  * @smid_task: smid assigned to the task
2992  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
2993  * Context: user
2994  *
2995  * MegaRaid use MPT interface for Task Magement request.
2996  * A generic API for sending task management requests to firmware.
2997  *
2998  * Return SUCCESS or FAILED.
2999  */
3000 static int
3001 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
3002         uint channel, uint id, u16 smid_task, u8 type)
3003 {
3004         struct MR_TASK_MANAGE_REQUEST *mr_request;
3005         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
3006         unsigned long timeleft;
3007         struct megasas_cmd_fusion *cmd_fusion;
3008         struct megasas_cmd *cmd_mfi;
3009         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3010         struct fusion_context *fusion;
3011         struct megasas_cmd_fusion *scsi_lookup;
3012         int rc;
3013         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
3014
3015         fusion = instance->ctrl_context;
3016
3017         cmd_mfi = megasas_get_cmd(instance);
3018
3019         if (!cmd_mfi) {
3020                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
3021                         __func__, __LINE__);
3022                 return -ENOMEM;
3023         }
3024
3025         cmd_fusion = megasas_get_cmd_fusion(instance,
3026                         instance->max_scsi_cmds + cmd_mfi->index);
3027
3028         /*  Save the smid. To be used for returning the cmd */
3029         cmd_mfi->context.smid = cmd_fusion->index;
3030
3031         req_desc = megasas_get_request_descriptor(instance,
3032                         (cmd_fusion->index - 1));
3033         if (!req_desc) {
3034                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
3035                         __func__, __LINE__);
3036                 megasas_return_cmd(instance, cmd_mfi);
3037                 return -ENOMEM;
3038         }
3039
3040         cmd_fusion->request_desc = req_desc;
3041         req_desc->Words = 0;
3042
3043         scsi_lookup = fusion->cmd_list[smid_task - 1];
3044
3045         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
3046         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
3047         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
3048         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3049         mpi_request->DevHandle = cpu_to_le16(device_handle);
3050         mpi_request->TaskType = type;
3051         mpi_request->TaskMID = cpu_to_le16(smid_task);
3052         mpi_request->LUN[1] = 0;
3053
3054
3055         req_desc = cmd_fusion->request_desc;
3056         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
3057         req_desc->HighPriority.RequestFlags =
3058                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
3059                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3060         req_desc->HighPriority.MSIxIndex =  0;
3061         req_desc->HighPriority.LMID = 0;
3062         req_desc->HighPriority.Reserved1 = 0;
3063
3064         if (channel < MEGASAS_MAX_PD_CHANNELS)
3065                 mr_request->tmReqFlags.isTMForPD = 1;
3066         else
3067                 mr_request->tmReqFlags.isTMForLD = 1;
3068
3069         init_completion(&cmd_fusion->done);
3070         megasas_fire_cmd_fusion(instance, req_desc);
3071
3072         timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ);
3073
3074         if (!timeleft) {
3075                 dev_err(&instance->pdev->dev,
3076                         "task mgmt type 0x%x timed out\n", type);
3077                 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
3078                 mutex_unlock(&instance->reset_mutex);
3079                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
3080                 mutex_lock(&instance->reset_mutex);
3081                 return rc;
3082         }
3083
3084         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
3085         megasas_tm_response_code(instance, mpi_reply);
3086
3087         megasas_return_cmd(instance, cmd_mfi);
3088         rc = SUCCESS;
3089         switch (type) {
3090         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
3091                 if (scsi_lookup->scmd == NULL)
3092                         break;
3093                 else {
3094                         instance->instancet->disable_intr(instance);
3095                         msleep(1000);
3096                         megasas_complete_cmd_dpc_fusion
3097                                         ((unsigned long)instance);
3098                         instance->instancet->enable_intr(instance);
3099                         if (scsi_lookup->scmd == NULL)
3100                                 break;
3101                 }
3102                 rc = FAILED;
3103                 break;
3104
3105         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
3106                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
3107                         break;
3108                 instance->instancet->disable_intr(instance);
3109                 msleep(1000);
3110                 megasas_complete_cmd_dpc_fusion
3111                                 ((unsigned long)instance);
3112                 rc = megasas_track_scsiio(instance, id, channel);
3113                 instance->instancet->enable_intr(instance);
3114
3115                 break;
3116         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
3117         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
3118                 break;
3119         default:
3120                 rc = FAILED;
3121                 break;
3122         }
3123
3124         return rc;
3125
3126 }
3127
3128 /*
3129  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
3130  * @instance: per adapter struct
3131  *
3132  * Return Non Zero index, if SMID found in outstanding commands
3133  */
3134 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
3135 {
3136         int i, ret = 0;
3137         struct megasas_instance *instance;
3138         struct megasas_cmd_fusion *cmd_fusion;
3139         struct fusion_context *fusion;
3140
3141         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3142
3143         fusion = instance->ctrl_context;
3144
3145         for (i = 0; i < instance->max_scsi_cmds; i++) {
3146                 cmd_fusion = fusion->cmd_list[i];
3147                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
3148                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
3149                                 " SMID: %d\n", cmd_fusion->index);
3150                         ret = cmd_fusion->index;
3151                         break;
3152                 }
3153         }
3154
3155         return ret;
3156 }
3157
3158 /*
3159 * megasas_get_tm_devhandle - Get devhandle for TM request
3160 * @sdev-                     OS provided scsi device
3161 *
3162 * Returns-                   devhandle/targetID of SCSI device
3163 */
3164 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
3165 {
3166         u16 pd_index = 0;
3167         u32 device_id;
3168         struct megasas_instance *instance;
3169         struct fusion_context *fusion;
3170         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3171         u16 devhandle = (u16)ULONG_MAX;
3172
3173         instance = (struct megasas_instance *)sdev->host->hostdata;
3174         fusion = instance->ctrl_context;
3175
3176         if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
3177                 if (instance->use_seqnum_jbod_fp) {
3178                                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
3179                                                 sdev->id;
3180                                 pd_sync = (void *)fusion->pd_seq_sync
3181                                                 [(instance->pd_seq_map_id - 1) & 1];
3182                                 devhandle = pd_sync->seq[pd_index].devHandle;
3183                 } else
3184                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
3185                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
3186         } else {
3187                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
3188                                 + sdev->id;
3189                 devhandle = device_id;
3190         }
3191
3192         return devhandle;
3193 }
3194
3195 /*
3196  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
3197  * @scmd : pointer to scsi command object
3198  *
3199  * Return SUCCESS, if command aborted else FAILED
3200  */
3201
3202 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
3203 {
3204         struct megasas_instance *instance;
3205         u16 smid, devhandle;
3206         struct fusion_context *fusion;
3207         int ret;
3208         struct MR_PRIV_DEVICE *mr_device_priv_data;
3209         mr_device_priv_data = scmd->device->hostdata;
3210
3211
3212         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3213         fusion = instance->ctrl_context;
3214
3215         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
3216                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
3217                 "SCSI host:%d\n", instance->host->host_no);
3218                 ret = FAILED;
3219                 return ret;
3220         }
3221
3222         if (!mr_device_priv_data) {
3223                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
3224                         "scmd(%p)\n", scmd);
3225                 scmd->result = DID_NO_CONNECT << 16;
3226                 ret = SUCCESS;
3227                 goto out;
3228         }
3229
3230
3231         if (!mr_device_priv_data->is_tm_capable) {
3232                 ret = FAILED;
3233                 goto out;
3234         }
3235
3236         mutex_lock(&instance->reset_mutex);
3237
3238         smid = megasas_fusion_smid_lookup(scmd);
3239
3240         if (!smid) {
3241                 ret = SUCCESS;
3242                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
3243                         " issued is not found in oustanding commands\n");
3244                 mutex_unlock(&instance->reset_mutex);
3245                 goto out;
3246         }
3247
3248         devhandle = megasas_get_tm_devhandle(scmd->device);
3249
3250         if (devhandle == (u16)ULONG_MAX) {
3251                 ret = SUCCESS;
3252                 sdev_printk(KERN_INFO, scmd->device,
3253                         "task abort issued for invalid devhandle\n");
3254                 mutex_unlock(&instance->reset_mutex);
3255                 goto out;
3256         }
3257         sdev_printk(KERN_INFO, scmd->device,
3258                 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
3259                 scmd, devhandle);
3260
3261         mr_device_priv_data->tm_busy = 1;
3262         ret = megasas_issue_tm(instance, devhandle,
3263                         scmd->device->channel, scmd->device->id, smid,
3264                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK);
3265         mr_device_priv_data->tm_busy = 0;
3266
3267         mutex_unlock(&instance->reset_mutex);
3268 out:
3269         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
3270                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
3271
3272         return ret;
3273 }
3274
3275 /*
3276  * megasas_reset_target_fusion : target reset function for fusion adapters
3277  * scmd: SCSI command pointer
3278  *
3279  * Returns SUCCESS if all commands associated with target aborted else FAILED
3280  */
3281
3282 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
3283 {
3284
3285         struct megasas_instance *instance;
3286         int ret = FAILED;
3287         u16 devhandle;
3288         struct fusion_context *fusion;
3289         struct MR_PRIV_DEVICE *mr_device_priv_data;
3290         mr_device_priv_data = scmd->device->hostdata;
3291
3292         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3293         fusion = instance->ctrl_context;
3294
3295         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
3296                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
3297                 "SCSI host:%d\n", instance->host->host_no);
3298                 ret = FAILED;
3299                 return ret;
3300         }
3301
3302         if (!mr_device_priv_data) {
3303                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
3304                         "scmd(%p)\n", scmd);
3305                 scmd->result = DID_NO_CONNECT << 16;
3306                 ret = SUCCESS;
3307                 goto out;
3308         }
3309
3310
3311         if (!mr_device_priv_data->is_tm_capable) {
3312                 ret = FAILED;
3313                 goto out;
3314         }
3315
3316         mutex_lock(&instance->reset_mutex);
3317         devhandle = megasas_get_tm_devhandle(scmd->device);
3318
3319         if (devhandle == (u16)ULONG_MAX) {
3320                 ret = SUCCESS;
3321                 sdev_printk(KERN_INFO, scmd->device,
3322                         "target reset issued for invalid devhandle\n");
3323                 mutex_unlock(&instance->reset_mutex);
3324                 goto out;
3325         }
3326
3327         sdev_printk(KERN_INFO, scmd->device,
3328                 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
3329                 scmd, devhandle);
3330         mr_device_priv_data->tm_busy = 1;
3331         ret = megasas_issue_tm(instance, devhandle,
3332                         scmd->device->channel, scmd->device->id, 0,
3333                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET);
3334         mr_device_priv_data->tm_busy = 0;
3335         mutex_unlock(&instance->reset_mutex);
3336 out:
3337         scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
3338                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
3339
3340         return ret;
3341 }
3342
3343 /*SRIOV get other instance in cluster if any*/
3344 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
3345 {
3346         int i;
3347
3348         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
3349                 if (megasas_mgmt_info.instance[i] &&
3350                         (megasas_mgmt_info.instance[i] != instance) &&
3351                          megasas_mgmt_info.instance[i]->requestorId &&
3352                          megasas_mgmt_info.instance[i]->peerIsPresent &&
3353                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
3354                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
3355                         return megasas_mgmt_info.instance[i];
3356         }
3357         return NULL;
3358 }
3359
3360 /* Check for a second path that is currently UP */
3361 int megasas_check_mpio_paths(struct megasas_instance *instance,
3362         struct scsi_cmnd *scmd)
3363 {
3364         struct megasas_instance *peer_instance = NULL;
3365         int retval = (DID_RESET << 16);
3366
3367         if (instance->peerIsPresent) {
3368                 peer_instance = megasas_get_peer_instance(instance);
3369                 if ((peer_instance) &&
3370                         (atomic_read(&peer_instance->adprecovery) ==
3371                         MEGASAS_HBA_OPERATIONAL))
3372                         retval = (DID_NO_CONNECT << 16);
3373         }
3374         return retval;
3375 }
3376
3377 /* Core fusion reset function */
3378 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
3379 {
3380         int retval = SUCCESS, i, convert = 0;
3381         struct megasas_instance *instance;
3382         struct megasas_cmd_fusion *cmd_fusion;
3383         struct fusion_context *fusion;
3384         u32 abs_state, status_reg, reset_adapter;
3385         u32 io_timeout_in_crash_mode = 0;
3386         struct scsi_cmnd *scmd_local = NULL;
3387         struct scsi_device *sdev;
3388
3389         instance = (struct megasas_instance *)shost->hostdata;
3390         fusion = instance->ctrl_context;
3391
3392         mutex_lock(&instance->reset_mutex);
3393
3394         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
3395                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
3396                        "returning FAILED for scsi%d.\n",
3397                         instance->host->host_no);
3398                 mutex_unlock(&instance->reset_mutex);
3399                 return FAILED;
3400         }
3401         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
3402         abs_state = status_reg & MFI_STATE_MASK;
3403
3404         /* IO timeout detected, forcibly put FW in FAULT state */
3405         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
3406                 instance->crash_dump_app_support && reason) {
3407                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
3408                         "forcibly FAULT Firmware\n");
3409                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3410                 status_reg = readl(&instance->reg_set->doorbell);
3411                 writel(status_reg | MFI_STATE_FORCE_OCR,
3412                         &instance->reg_set->doorbell);
3413                 readl(&instance->reg_set->doorbell);
3414                 mutex_unlock(&instance->reset_mutex);
3415                 do {
3416                         ssleep(3);
3417                         io_timeout_in_crash_mode++;
3418                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
3419                                 "seconds for crash dump collection and OCR "
3420                                 "to be done\n", (io_timeout_in_crash_mode * 3));
3421                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
3422                         (io_timeout_in_crash_mode < 80));
3423
3424                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
3425                         dev_info(&instance->pdev->dev, "OCR done for IO "
3426                                 "timeout case\n");
3427                         retval = SUCCESS;
3428                 } else {
3429                         dev_info(&instance->pdev->dev, "Controller is not "
3430                                 "operational after 240 seconds wait for IO "
3431                                 "timeout case in FW crash dump mode\n do "
3432                                 "OCR/kill adapter\n");
3433                         retval = megasas_reset_fusion(shost, 0);
3434                 }
3435                 return retval;
3436         }
3437
3438         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
3439                 del_timer_sync(&instance->sriov_heartbeat_timer);
3440         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
3441         set_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
3442         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
3443         instance->instancet->disable_intr(instance);
3444         msleep(1000);
3445
3446         /* First try waiting for commands to complete */
3447         if (megasas_wait_for_outstanding_fusion(instance, reason,
3448                                                 &convert)) {
3449                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3450                 dev_warn(&instance->pdev->dev, "resetting fusion "
3451                        "adapter scsi%d.\n", instance->host->host_no);
3452                 if (convert)
3453                         reason = 0;
3454
3455                 /* Now return commands back to the OS */
3456                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
3457                         cmd_fusion = fusion->cmd_list[i];
3458                         scmd_local = cmd_fusion->scmd;
3459                         if (cmd_fusion->scmd) {
3460                                 scmd_local->result =
3461                                         megasas_check_mpio_paths(instance,
3462                                                         scmd_local);
3463                                 if (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3464                                         atomic_dec(&instance->ldio_outstanding);
3465                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3466                                 scsi_dma_unmap(scmd_local);
3467                                 scmd_local->scsi_done(scmd_local);
3468                                 atomic_dec(&instance->fw_outstanding);
3469                         }
3470                 }
3471
3472                 status_reg = instance->instancet->read_fw_status_reg(
3473                         instance->reg_set);
3474                 abs_state = status_reg & MFI_STATE_MASK;
3475                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
3476                 if (instance->disableOnlineCtrlReset ||
3477                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
3478                         /* Reset not supported, kill adapter */
3479                         dev_warn(&instance->pdev->dev, "Reset not supported"
3480                                ", killing adapter scsi%d.\n",
3481                                 instance->host->host_no);
3482                         megaraid_sas_kill_hba(instance);
3483                         instance->skip_heartbeat_timer_del = 1;
3484                         retval = FAILED;
3485                         goto out;
3486                 }
3487
3488                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
3489                 if (instance->requestorId && !reason) {
3490                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
3491                         goto transition_to_ready;
3492                 }
3493
3494                 /* Now try to reset the chip */
3495                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
3496
3497                         if (instance->instancet->adp_reset
3498                                 (instance, instance->reg_set))
3499                                 continue;
3500 transition_to_ready:
3501                         /* Wait for FW to become ready */
3502                         if (megasas_transition_to_ready(instance, 1)) {
3503                                 dev_warn(&instance->pdev->dev,
3504                                         "Failed to transition controller to ready for "
3505                                         "scsi%d.\n", instance->host->host_no);
3506                                 if (instance->requestorId && !reason)
3507                                         goto fail_kill_adapter;
3508                                 else
3509                                         continue;
3510                         }
3511                         megasas_reset_reply_desc(instance);
3512                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
3513
3514                         if (megasas_ioc_init_fusion(instance)) {
3515                                 dev_warn(&instance->pdev->dev,
3516                                        "megasas_ioc_init_fusion() failed! for "
3517                                        "scsi%d\n", instance->host->host_no);
3518                                 if (instance->requestorId && !reason)
3519                                         goto fail_kill_adapter;
3520                                 else
3521                                         continue;
3522                         }
3523
3524                         megasas_refire_mgmt_cmd(instance);
3525
3526                         if (megasas_get_ctrl_info(instance)) {
3527                                 dev_info(&instance->pdev->dev,
3528                                         "Failed from %s %d\n",
3529                                         __func__, __LINE__);
3530                                 megaraid_sas_kill_hba(instance);
3531                                 retval = FAILED;
3532                         }
3533                         /* Reset load balance info */
3534                         memset(fusion->load_balance_info, 0,
3535                                sizeof(struct LD_LOAD_BALANCE_INFO)
3536                                *MAX_LOGICAL_DRIVES_EXT);
3537
3538                         if (!megasas_get_map_info(instance))
3539                                 megasas_sync_map_info(instance);
3540
3541                         megasas_setup_jbod_map(instance);
3542
3543                         shost_for_each_device(sdev, shost)
3544                                 megasas_update_sdev_properties(sdev);
3545
3546                         clear_bit(MEGASAS_FUSION_IN_RESET,
3547                                   &instance->reset_flags);
3548                         instance->instancet->enable_intr(instance);
3549                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3550
3551                         /* Restart SR-IOV heartbeat */
3552                         if (instance->requestorId) {
3553                                 if (!megasas_sriov_start_heartbeat(instance, 0))
3554                                         megasas_start_timer(instance,
3555                                                             &instance->sriov_heartbeat_timer,
3556                                                             megasas_sriov_heartbeat_handler,
3557                                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
3558                                 else
3559                                         instance->skip_heartbeat_timer_del = 1;
3560                         }
3561
3562                         /* Adapter reset completed successfully */
3563                         dev_warn(&instance->pdev->dev, "Reset "
3564                                "successful for scsi%d.\n",
3565                                 instance->host->host_no);
3566
3567                         if (instance->crash_dump_drv_support &&
3568                                 instance->crash_dump_app_support)
3569                                 megasas_set_crash_dump_params(instance,
3570                                         MR_CRASH_BUF_TURN_ON);
3571                         else
3572                                 megasas_set_crash_dump_params(instance,
3573                                         MR_CRASH_BUF_TURN_OFF);
3574
3575                         retval = SUCCESS;
3576                         goto out;
3577                 }
3578 fail_kill_adapter:
3579                 /* Reset failed, kill the adapter */
3580                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
3581                        "adapter scsi%d.\n", instance->host->host_no);
3582                 megaraid_sas_kill_hba(instance);
3583                 instance->skip_heartbeat_timer_del = 1;
3584                 retval = FAILED;
3585         } else {
3586                 /* For VF: Restart HB timer if we didn't OCR */
3587                 if (instance->requestorId) {
3588                         megasas_start_timer(instance,
3589                                             &instance->sriov_heartbeat_timer,
3590                                             megasas_sriov_heartbeat_handler,
3591                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
3592                 }
3593                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
3594                 instance->instancet->enable_intr(instance);
3595                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3596         }
3597 out:
3598         clear_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE, &instance->reset_flags);
3599         mutex_unlock(&instance->reset_mutex);
3600         return retval;
3601 }
3602
3603 /* Fusion Crash dump collection work queue */
3604 void  megasas_fusion_crash_dump_wq(struct work_struct *work)
3605 {
3606         struct megasas_instance *instance =
3607                 container_of(work, struct megasas_instance, crash_init);
3608         u32 status_reg;
3609         u8 partial_copy = 0;
3610
3611
3612         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
3613
3614         /*
3615          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
3616          * to host crash buffers
3617          */
3618         if (instance->drv_buf_index == 0) {
3619                 /* Buffer is already allocated for old Crash dump.
3620                  * Do OCR and do not wait for crash dump collection
3621                  */
3622                 if (instance->drv_buf_alloc) {
3623                         dev_info(&instance->pdev->dev, "earlier crash dump is "
3624                                 "not yet copied by application, ignoring this "
3625                                 "crash dump and initiating OCR\n");
3626                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
3627                         writel(status_reg,
3628                                 &instance->reg_set->outbound_scratch_pad);
3629                         readl(&instance->reg_set->outbound_scratch_pad);
3630                         return;
3631                 }
3632                 megasas_alloc_host_crash_buffer(instance);
3633                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
3634                         "allocated: %d\n", instance->drv_buf_alloc);
3635         }
3636
3637         /*
3638          * Driver has allocated max buffers, which can be allocated
3639          * and FW has more crash dump data, then driver will
3640          * ignore the data.
3641          */
3642         if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
3643                 dev_info(&instance->pdev->dev, "Driver is done copying "
3644                         "the buffer: %d\n", instance->drv_buf_alloc);
3645                 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
3646                 partial_copy = 1;
3647         } else {
3648                 memcpy(instance->crash_buf[instance->drv_buf_index],
3649                         instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
3650                 instance->drv_buf_index++;
3651                 status_reg &= ~MFI_STATE_DMADONE;
3652         }
3653
3654         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
3655                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
3656                         "of copied buffers: %d\n", instance->drv_buf_index);
3657                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
3658                 instance->fw_crash_state = AVAILABLE;
3659                 instance->drv_buf_index = 0;
3660                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
3661                 readl(&instance->reg_set->outbound_scratch_pad);
3662                 if (!partial_copy)
3663                         megasas_reset_fusion(instance->host, 0);
3664         } else {
3665                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
3666                 readl(&instance->reg_set->outbound_scratch_pad);
3667         }
3668 }
3669
3670
3671 /* Fusion OCR work queue */
3672 void megasas_fusion_ocr_wq(struct work_struct *work)
3673 {
3674         struct megasas_instance *instance =
3675                 container_of(work, struct megasas_instance, work_init);
3676
3677         megasas_reset_fusion(instance->host, 0);
3678 }
3679
3680 struct megasas_instance_template megasas_instance_template_fusion = {
3681         .enable_intr = megasas_enable_intr_fusion,
3682         .disable_intr = megasas_disable_intr_fusion,
3683         .clear_intr = megasas_clear_intr_fusion,
3684         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
3685         .adp_reset = megasas_adp_reset_fusion,
3686         .check_reset = megasas_check_reset_fusion,
3687         .service_isr = megasas_isr_fusion,
3688         .tasklet = megasas_complete_cmd_dpc_fusion,
3689         .init_adapter = megasas_init_adapter_fusion,
3690         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
3691         .issue_dcmd = megasas_issue_dcmd_fusion,
3692 };