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)
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, u8 fp_possible)
1964 {
1965         u32 device_id;
1966         struct MPI2_RAID_SCSI_IO_REQUEST *io_request;
1967         u16 pd_index = 0;
1968         u16 os_timeout_value;
1969         u16 timeout_limit;
1970         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1971         struct RAID_CONTEXT     *pRAID_Context;
1972         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1973         struct fusion_context *fusion = instance->ctrl_context;
1974         pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id - 1) & 1];
1975
1976         device_id = MEGASAS_DEV_INDEX(scmd);
1977         pd_index = MEGASAS_PD_INDEX(scmd);
1978         os_timeout_value = scmd->request->timeout / HZ;
1979
1980         io_request = cmd->io_request;
1981         /* get RAID_Context pointer */
1982         pRAID_Context = &io_request->RaidContext;
1983         pRAID_Context->regLockFlags = 0;
1984         pRAID_Context->regLockRowLBA = 0;
1985         pRAID_Context->regLockLength = 0;
1986         io_request->DataLength = cpu_to_le32(scsi_bufflen(scmd));
1987         io_request->LUN[1] = scmd->device->lun;
1988         pRAID_Context->RAIDFlags = MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD
1989                 << MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT;
1990
1991         /* If FW supports PD sequence number */
1992         if (instance->use_seqnum_jbod_fp &&
1993                 instance->pd_list[pd_index].driveType == TYPE_DISK) {
1994                 /* TgtId must be incremented by 255 as jbod seq number is index
1995                  * below raid map
1996                  */
1997                 pRAID_Context->VirtualDiskTgtId =
1998                         cpu_to_le16(device_id + (MAX_PHYSICAL_DEVICES - 1));
1999                 pRAID_Context->configSeqNum = pd_sync->seq[pd_index].seqNum;
2000                 io_request->DevHandle = pd_sync->seq[pd_index].devHandle;
2001                 pRAID_Context->regLockFlags |=
2002                         (MR_RL_FLAGS_SEQ_NUM_ENABLE|MR_RL_FLAGS_GRANT_DESTINATION_CUDA);
2003         } else if (fusion->fast_path_io) {
2004                 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2005                 pRAID_Context->configSeqNum = 0;
2006                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
2007                 io_request->DevHandle =
2008                         local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;
2009         } else {
2010                 /* Want to send all IO via FW path */
2011                 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2012                 pRAID_Context->configSeqNum = 0;
2013                 io_request->DevHandle = cpu_to_le16(0xFFFF);
2014         }
2015
2016         cmd->request_desc->SCSIIO.DevHandle = io_request->DevHandle;
2017         cmd->request_desc->SCSIIO.MSIxIndex =
2018                 instance->msix_vectors ?
2019                 (raw_smp_processor_id() % instance->msix_vectors) : 0;
2020
2021
2022         if (!fp_possible) {
2023                 /* system pd firmware path */
2024                 io_request->Function  = MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST;
2025                 cmd->request_desc->SCSIIO.RequestFlags =
2026                         (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2027                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2028                 pRAID_Context->timeoutValue = cpu_to_le16(os_timeout_value);
2029                 pRAID_Context->VirtualDiskTgtId = cpu_to_le16(device_id);
2030         } else {
2031                 /* system pd Fast Path */
2032                 io_request->Function = MPI2_FUNCTION_SCSI_IO_REQUEST;
2033                 timeout_limit = (scmd->device->type == TYPE_DISK) ?
2034                                 255 : 0xFFFF;
2035                 pRAID_Context->timeoutValue =
2036                         cpu_to_le16((os_timeout_value > timeout_limit) ?
2037                         timeout_limit : os_timeout_value);
2038                 if (fusion->adapter_type == INVADER_SERIES) {
2039                         pRAID_Context->Type = MPI2_TYPE_CUDA;
2040                         pRAID_Context->nseg = 0x1;
2041                         io_request->IoFlags |=
2042                                 cpu_to_le16(MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH);
2043                 }
2044                 cmd->request_desc->SCSIIO.RequestFlags =
2045                         (MPI2_REQ_DESCRIPT_FLAGS_FP_IO <<
2046                                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2047         }
2048 }
2049
2050 /**
2051  * megasas_build_io_fusion -    Prepares IOs to devices
2052  * @instance:           Adapter soft state
2053  * @scp:                SCSI command
2054  * @cmd:                Command to be prepared
2055  *
2056  * Invokes helper functions to prepare request frames
2057  * and sets flags appropriate for IO/Non-IO cmd
2058  */
2059 int
2060 megasas_build_io_fusion(struct megasas_instance *instance,
2061                         struct scsi_cmnd *scp,
2062                         struct megasas_cmd_fusion *cmd)
2063 {
2064         u16 sge_count;
2065         u8  cmd_type;
2066         struct MPI2_RAID_SCSI_IO_REQUEST *io_request = cmd->io_request;
2067
2068         /* Zero out some fields so they don't get reused */
2069         memset(io_request->LUN, 0x0, 8);
2070         io_request->CDB.EEDP32.PrimaryReferenceTag = 0;
2071         io_request->CDB.EEDP32.PrimaryApplicationTagMask = 0;
2072         io_request->EEDPFlags = 0;
2073         io_request->Control = 0;
2074         io_request->EEDPBlockSize = 0;
2075         io_request->ChainOffset = 0;
2076         io_request->RaidContext.RAIDFlags = 0;
2077         io_request->RaidContext.Type = 0;
2078         io_request->RaidContext.nseg = 0;
2079
2080         memcpy(io_request->CDB.CDB32, scp->cmnd, scp->cmd_len);
2081         /*
2082          * Just the CDB length,rest of the Flags are zero
2083          * This will be modified for FP in build_ldio_fusion
2084          */
2085         io_request->IoFlags = cpu_to_le16(scp->cmd_len);
2086
2087         switch (cmd_type = megasas_cmd_type(scp)) {
2088         case READ_WRITE_LDIO:
2089                 megasas_build_ldio_fusion(instance, scp, cmd);
2090                 break;
2091         case NON_READ_WRITE_LDIO:
2092                 megasas_build_ld_nonrw_fusion(instance, scp, cmd);
2093                 break;
2094         case READ_WRITE_SYSPDIO:
2095         case NON_READ_WRITE_SYSPDIO:
2096                 if (instance->secure_jbod_support &&
2097                         (cmd_type == NON_READ_WRITE_SYSPDIO))
2098                         megasas_build_syspd_fusion(instance, scp, cmd, 0);
2099                 else
2100                         megasas_build_syspd_fusion(instance, scp, cmd, 1);
2101                 break;
2102         default:
2103                 break;
2104         }
2105
2106         /*
2107          * Construct SGL
2108          */
2109
2110         sge_count =
2111                 megasas_make_sgl_fusion(instance, scp,
2112                                         (struct MPI25_IEEE_SGE_CHAIN64 *)
2113                                         &io_request->SGL, cmd);
2114
2115         if (sge_count > instance->max_num_sge) {
2116                 dev_err(&instance->pdev->dev, "Error. sge_count (0x%x) exceeds "
2117                        "max (0x%x) allowed\n", sge_count,
2118                        instance->max_num_sge);
2119                 return 1;
2120         }
2121
2122         /* numSGE store lower 8 bit of sge_count.
2123          * numSGEExt store higher 8 bit of sge_count
2124          */
2125         io_request->RaidContext.numSGE = sge_count;
2126         io_request->RaidContext.numSGEExt = (u8)(sge_count >> 8);
2127
2128         io_request->SGLFlags = cpu_to_le16(MPI2_SGE_FLAGS_64_BIT_ADDRESSING);
2129
2130         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
2131                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_WRITE);
2132         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
2133                 io_request->Control |= cpu_to_le32(MPI2_SCSIIO_CONTROL_READ);
2134
2135         io_request->SGLOffset0 =
2136                 offsetof(struct MPI2_RAID_SCSI_IO_REQUEST, SGL) / 4;
2137
2138         io_request->SenseBufferLowAddress = cpu_to_le32(cmd->sense_phys_addr);
2139         io_request->SenseBufferLength = SCSI_SENSE_BUFFERSIZE;
2140
2141         cmd->scmd = scp;
2142         scp->SCp.ptr = (char *)cmd;
2143
2144         return 0;
2145 }
2146
2147 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2148 megasas_get_request_descriptor(struct megasas_instance *instance, u16 index)
2149 {
2150         u8 *p;
2151         struct fusion_context *fusion;
2152
2153         if (index >= instance->max_fw_cmds) {
2154                 dev_err(&instance->pdev->dev, "Invalid SMID (0x%x)request for "
2155                        "descriptor for scsi%d\n", index,
2156                         instance->host->host_no);
2157                 return NULL;
2158         }
2159         fusion = instance->ctrl_context;
2160         p = fusion->req_frames_desc
2161                 +sizeof(union MEGASAS_REQUEST_DESCRIPTOR_UNION) *index;
2162
2163         return (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)p;
2164 }
2165
2166 /**
2167  * megasas_build_and_issue_cmd_fusion -Main routine for building and
2168  *                                     issuing non IOCTL cmd
2169  * @instance:                   Adapter soft state
2170  * @scmd:                       pointer to scsi cmd from OS
2171  */
2172 static u32
2173 megasas_build_and_issue_cmd_fusion(struct megasas_instance *instance,
2174                                    struct scsi_cmnd *scmd)
2175 {
2176         struct megasas_cmd_fusion *cmd;
2177         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2178         u32 index;
2179         struct fusion_context *fusion;
2180
2181         fusion = instance->ctrl_context;
2182
2183         if ((megasas_cmd_type(scmd) == READ_WRITE_LDIO) &&
2184                 instance->ldio_threshold &&
2185                 (atomic_inc_return(&instance->ldio_outstanding) >
2186                 instance->ldio_threshold)) {
2187                 atomic_dec(&instance->ldio_outstanding);
2188                 return SCSI_MLQUEUE_DEVICE_BUSY;
2189         }
2190
2191         cmd = megasas_get_cmd_fusion(instance, scmd->request->tag);
2192
2193         index = cmd->index;
2194
2195         req_desc = megasas_get_request_descriptor(instance, index-1);
2196         if (!req_desc)
2197                 return SCSI_MLQUEUE_HOST_BUSY;
2198
2199         req_desc->Words = 0;
2200         cmd->request_desc = req_desc;
2201
2202         if (megasas_build_io_fusion(instance, scmd, cmd)) {
2203                 megasas_return_cmd_fusion(instance, cmd);
2204                 dev_err(&instance->pdev->dev, "Error building command\n");
2205                 cmd->request_desc = NULL;
2206                 return SCSI_MLQUEUE_HOST_BUSY;
2207         }
2208
2209         req_desc = cmd->request_desc;
2210         req_desc->SCSIIO.SMID = cpu_to_le16(index);
2211
2212         if (cmd->io_request->ChainOffset != 0 &&
2213             cmd->io_request->ChainOffset != 0xF)
2214                 dev_err(&instance->pdev->dev, "The chain offset value is not "
2215                        "correct : %x\n", cmd->io_request->ChainOffset);
2216
2217         /*
2218          * Issue the command to the FW
2219          */
2220         atomic_inc(&instance->fw_outstanding);
2221
2222         megasas_fire_cmd_fusion(instance, req_desc);
2223
2224         return 0;
2225 }
2226
2227 /**
2228  * complete_cmd_fusion -        Completes command
2229  * @instance:                   Adapter soft state
2230  * Completes all commands that is in reply descriptor queue
2231  */
2232 int
2233 complete_cmd_fusion(struct megasas_instance *instance, u32 MSIxIndex)
2234 {
2235         union MPI2_REPLY_DESCRIPTORS_UNION *desc;
2236         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *reply_desc;
2237         struct MPI2_RAID_SCSI_IO_REQUEST *scsi_io_req;
2238         struct fusion_context *fusion;
2239         struct megasas_cmd *cmd_mfi;
2240         struct megasas_cmd_fusion *cmd_fusion;
2241         u16 smid, num_completed;
2242         u8 reply_descript_type;
2243         u32 status, extStatus, device_id;
2244         union desc_value d_val;
2245         struct LD_LOAD_BALANCE_INFO *lbinfo;
2246         int threshold_reply_count = 0;
2247         struct scsi_cmnd *scmd_local = NULL;
2248         struct MR_TASK_MANAGE_REQUEST *mr_tm_req;
2249         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_tm_req;
2250
2251         fusion = instance->ctrl_context;
2252
2253         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2254                 return IRQ_HANDLED;
2255
2256         desc = fusion->reply_frames_desc[MSIxIndex] +
2257                                 fusion->last_reply_idx[MSIxIndex];
2258
2259         reply_desc = (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2260
2261         d_val.word = desc->Words;
2262
2263         reply_descript_type = reply_desc->ReplyFlags &
2264                 MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2265
2266         if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2267                 return IRQ_NONE;
2268
2269         num_completed = 0;
2270
2271         while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
2272                d_val.u.high != cpu_to_le32(UINT_MAX)) {
2273                 smid = le16_to_cpu(reply_desc->SMID);
2274
2275                 cmd_fusion = fusion->cmd_list[smid - 1];
2276
2277                 scsi_io_req =
2278                         (struct MPI2_RAID_SCSI_IO_REQUEST *)
2279                   cmd_fusion->io_request;
2280
2281                 if (cmd_fusion->scmd)
2282                         cmd_fusion->scmd->SCp.ptr = NULL;
2283
2284                 scmd_local = cmd_fusion->scmd;
2285                 status = scsi_io_req->RaidContext.status;
2286                 extStatus = scsi_io_req->RaidContext.exStatus;
2287
2288                 switch (scsi_io_req->Function) {
2289                 case MPI2_FUNCTION_SCSI_TASK_MGMT:
2290                         mr_tm_req = (struct MR_TASK_MANAGE_REQUEST *)
2291                                                 cmd_fusion->io_request;
2292                         mpi_tm_req = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *)
2293                                                 &mr_tm_req->TmRequest;
2294                         dev_dbg(&instance->pdev->dev, "TM completion:"
2295                                 "type: 0x%x TaskMID: 0x%x\n",
2296                                 mpi_tm_req->TaskType, mpi_tm_req->TaskMID);
2297                         complete(&cmd_fusion->done);
2298                         break;
2299                 case MPI2_FUNCTION_SCSI_IO_REQUEST:  /*Fast Path IO.*/
2300                         /* Update load balancing info */
2301                         device_id = MEGASAS_DEV_INDEX(scmd_local);
2302                         lbinfo = &fusion->load_balance_info[device_id];
2303                         if (cmd_fusion->scmd->SCp.Status &
2304                             MEGASAS_LOAD_BALANCE_FLAG) {
2305                                 atomic_dec(&lbinfo->scsi_pending_cmds[cmd_fusion->pd_r1_lb]);
2306                                 cmd_fusion->scmd->SCp.Status &=
2307                                         ~MEGASAS_LOAD_BALANCE_FLAG;
2308                         }
2309                         if (reply_descript_type ==
2310                             MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS) {
2311                                 if (megasas_dbg_lvl == 5)
2312                                         dev_err(&instance->pdev->dev, "\nFAST Path "
2313                                                "IO Success\n");
2314                         }
2315                         /* Fall thru and complete IO */
2316                 case MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST: /* LD-IO Path */
2317                         /* Map the FW Cmd Status */
2318                         map_cmd_status(cmd_fusion, status, extStatus);
2319                         scsi_io_req->RaidContext.status = 0;
2320                         scsi_io_req->RaidContext.exStatus = 0;
2321                         if (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
2322                                 atomic_dec(&instance->ldio_outstanding);
2323                         megasas_return_cmd_fusion(instance, cmd_fusion);
2324                         scsi_dma_unmap(scmd_local);
2325                         scmd_local->scsi_done(scmd_local);
2326                         atomic_dec(&instance->fw_outstanding);
2327
2328                         break;
2329                 case MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST: /*MFI command */
2330                         cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2331
2332                         /* Poll mode. Dummy free.
2333                          * In case of Interrupt mode, caller has reverse check.
2334                          */
2335                         if (cmd_mfi->flags & DRV_DCMD_POLLED_MODE) {
2336                                 cmd_mfi->flags &= ~DRV_DCMD_POLLED_MODE;
2337                                 megasas_return_cmd(instance, cmd_mfi);
2338                         } else
2339                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2340                         break;
2341                 }
2342
2343                 fusion->last_reply_idx[MSIxIndex]++;
2344                 if (fusion->last_reply_idx[MSIxIndex] >=
2345                     fusion->reply_q_depth)
2346                         fusion->last_reply_idx[MSIxIndex] = 0;
2347
2348                 desc->Words = cpu_to_le64(ULLONG_MAX);
2349                 num_completed++;
2350                 threshold_reply_count++;
2351
2352                 /* Get the next reply descriptor */
2353                 if (!fusion->last_reply_idx[MSIxIndex])
2354                         desc = fusion->reply_frames_desc[MSIxIndex];
2355                 else
2356                         desc++;
2357
2358                 reply_desc =
2359                   (struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR *)desc;
2360
2361                 d_val.word = desc->Words;
2362
2363                 reply_descript_type = reply_desc->ReplyFlags &
2364                         MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
2365
2366                 if (reply_descript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
2367                         break;
2368                 /*
2369                  * Write to reply post host index register after completing threshold
2370                  * number of reply counts and still there are more replies in reply queue
2371                  * pending to be completed
2372                  */
2373                 if (threshold_reply_count >= THRESHOLD_REPLY_COUNT) {
2374                         if (fusion->adapter_type == INVADER_SERIES)
2375                                 writel(((MSIxIndex & 0x7) << 24) |
2376                                         fusion->last_reply_idx[MSIxIndex],
2377                                         instance->reply_post_host_index_addr[MSIxIndex/8]);
2378                         else
2379                                 writel((MSIxIndex << 24) |
2380                                         fusion->last_reply_idx[MSIxIndex],
2381                                         instance->reply_post_host_index_addr[0]);
2382                         threshold_reply_count = 0;
2383                 }
2384         }
2385
2386         if (!num_completed)
2387                 return IRQ_NONE;
2388
2389         wmb();
2390         if (fusion->adapter_type == INVADER_SERIES)
2391                 writel(((MSIxIndex & 0x7) << 24) |
2392                         fusion->last_reply_idx[MSIxIndex],
2393                         instance->reply_post_host_index_addr[MSIxIndex/8]);
2394         else
2395                 writel((MSIxIndex << 24) |
2396                         fusion->last_reply_idx[MSIxIndex],
2397                         instance->reply_post_host_index_addr[0]);
2398         megasas_check_and_restore_queue_depth(instance);
2399         return IRQ_HANDLED;
2400 }
2401
2402 /**
2403  * megasas_complete_cmd_dpc_fusion -    Completes command
2404  * @instance:                   Adapter soft state
2405  *
2406  * Tasklet to complete cmds
2407  */
2408 void
2409 megasas_complete_cmd_dpc_fusion(unsigned long instance_addr)
2410 {
2411         struct megasas_instance *instance =
2412                 (struct megasas_instance *)instance_addr;
2413         unsigned long flags;
2414         u32 count, MSIxIndex;
2415
2416         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2417
2418         /* If we have already declared adapter dead, donot complete cmds */
2419         spin_lock_irqsave(&instance->hba_lock, flags);
2420         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2421                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2422                 return;
2423         }
2424         spin_unlock_irqrestore(&instance->hba_lock, flags);
2425
2426         for (MSIxIndex = 0 ; MSIxIndex < count; MSIxIndex++)
2427                 complete_cmd_fusion(instance, MSIxIndex);
2428 }
2429
2430 /**
2431  * megasas_isr_fusion - isr entry point
2432  */
2433 irqreturn_t megasas_isr_fusion(int irq, void *devp)
2434 {
2435         struct megasas_irq_context *irq_context = devp;
2436         struct megasas_instance *instance = irq_context->instance;
2437         u32 mfiStatus, fw_state, dma_state;
2438
2439         if (instance->mask_interrupts)
2440                 return IRQ_NONE;
2441
2442         if (!instance->msix_vectors) {
2443                 mfiStatus = instance->instancet->clear_intr(instance->reg_set);
2444                 if (!mfiStatus)
2445                         return IRQ_NONE;
2446         }
2447
2448         /* If we are resetting, bail */
2449         if (test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags)) {
2450                 instance->instancet->clear_intr(instance->reg_set);
2451                 return IRQ_HANDLED;
2452         }
2453
2454         if (!complete_cmd_fusion(instance, irq_context->MSIxIndex)) {
2455                 instance->instancet->clear_intr(instance->reg_set);
2456                 /* If we didn't complete any commands, check for FW fault */
2457                 fw_state = instance->instancet->read_fw_status_reg(
2458                         instance->reg_set) & MFI_STATE_MASK;
2459                 dma_state = instance->instancet->read_fw_status_reg
2460                         (instance->reg_set) & MFI_STATE_DMADONE;
2461                 if (instance->crash_dump_drv_support &&
2462                         instance->crash_dump_app_support) {
2463                         /* Start collecting crash, if DMA bit is done */
2464                         if ((fw_state == MFI_STATE_FAULT) && dma_state)
2465                                 schedule_work(&instance->crash_init);
2466                         else if (fw_state == MFI_STATE_FAULT)
2467                                 schedule_work(&instance->work_init);
2468                 } else if (fw_state == MFI_STATE_FAULT) {
2469                         dev_warn(&instance->pdev->dev, "Iop2SysDoorbellInt"
2470                                "for scsi%d\n", instance->host->host_no);
2471                         schedule_work(&instance->work_init);
2472                 }
2473         }
2474
2475         return IRQ_HANDLED;
2476 }
2477
2478 /**
2479  * build_mpt_mfi_pass_thru - builds a cmd fo MFI Pass thru
2480  * @instance:                   Adapter soft state
2481  * mfi_cmd:                     megasas_cmd pointer
2482  *
2483  */
2484 u8
2485 build_mpt_mfi_pass_thru(struct megasas_instance *instance,
2486                         struct megasas_cmd *mfi_cmd)
2487 {
2488         struct MPI25_IEEE_SGE_CHAIN64 *mpi25_ieee_chain;
2489         struct MPI2_RAID_SCSI_IO_REQUEST *io_req;
2490         struct megasas_cmd_fusion *cmd;
2491         struct fusion_context *fusion;
2492         struct megasas_header *frame_hdr = &mfi_cmd->frame->hdr;
2493
2494         fusion = instance->ctrl_context;
2495
2496         cmd = megasas_get_cmd_fusion(instance,
2497                         instance->max_scsi_cmds + mfi_cmd->index);
2498
2499         /*  Save the smid. To be used for returning the cmd */
2500         mfi_cmd->context.smid = cmd->index;
2501
2502         /*
2503          * For cmds where the flag is set, store the flag and check
2504          * on completion. For cmds with this flag, don't call
2505          * megasas_complete_cmd
2506          */
2507
2508         if (frame_hdr->flags & cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE))
2509                 mfi_cmd->flags |= DRV_DCMD_POLLED_MODE;
2510
2511         io_req = cmd->io_request;
2512
2513         if (fusion->adapter_type == INVADER_SERIES) {
2514                 struct MPI25_IEEE_SGE_CHAIN64 *sgl_ptr_end =
2515                         (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL;
2516                 sgl_ptr_end += fusion->max_sge_in_main_msg - 1;
2517                 sgl_ptr_end->Flags = 0;
2518         }
2519
2520         mpi25_ieee_chain =
2521           (struct MPI25_IEEE_SGE_CHAIN64 *)&io_req->SGL.IeeeChain;
2522
2523         io_req->Function    = MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST;
2524         io_req->SGLOffset0  = offsetof(struct MPI2_RAID_SCSI_IO_REQUEST,
2525                                        SGL) / 4;
2526         io_req->ChainOffset = fusion->chain_offset_mfi_pthru;
2527
2528         mpi25_ieee_chain->Address = cpu_to_le64(mfi_cmd->frame_phys_addr);
2529
2530         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
2531                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
2532
2533         mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz);
2534
2535         return 0;
2536 }
2537
2538 /**
2539  * build_mpt_cmd - Calls helper function to build a cmd MFI Pass thru cmd
2540  * @instance:                   Adapter soft state
2541  * @cmd:                        mfi cmd to build
2542  *
2543  */
2544 union MEGASAS_REQUEST_DESCRIPTOR_UNION *
2545 build_mpt_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
2546 {
2547         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2548         u16 index;
2549
2550         if (build_mpt_mfi_pass_thru(instance, cmd)) {
2551                 dev_err(&instance->pdev->dev, "Couldn't build MFI pass thru cmd\n");
2552                 return NULL;
2553         }
2554
2555         index = cmd->context.smid;
2556
2557         req_desc = megasas_get_request_descriptor(instance, index - 1);
2558
2559         if (!req_desc)
2560                 return NULL;
2561
2562         req_desc->Words = 0;
2563         req_desc->SCSIIO.RequestFlags = (MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO <<
2564                                          MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
2565
2566         req_desc->SCSIIO.SMID = cpu_to_le16(index);
2567
2568         return req_desc;
2569 }
2570
2571 /**
2572  * megasas_issue_dcmd_fusion - Issues a MFI Pass thru cmd
2573  * @instance:                   Adapter soft state
2574  * @cmd:                        mfi cmd pointer
2575  *
2576  */
2577 int
2578 megasas_issue_dcmd_fusion(struct megasas_instance *instance,
2579                           struct megasas_cmd *cmd)
2580 {
2581         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2582
2583         req_desc = build_mpt_cmd(instance, cmd);
2584         if (!req_desc) {
2585                 dev_info(&instance->pdev->dev, "Failed from %s %d\n",
2586                                         __func__, __LINE__);
2587                 return DCMD_NOT_FIRED;
2588         }
2589
2590         megasas_fire_cmd_fusion(instance, req_desc);
2591         return DCMD_SUCCESS;
2592 }
2593
2594 /**
2595  * megasas_release_fusion -     Reverses the FW initialization
2596  * @instance:                   Adapter soft state
2597  */
2598 void
2599 megasas_release_fusion(struct megasas_instance *instance)
2600 {
2601         megasas_free_cmds(instance);
2602         megasas_free_cmds_fusion(instance);
2603
2604         iounmap(instance->reg_set);
2605
2606         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
2607 }
2608
2609 /**
2610  * megasas_read_fw_status_reg_fusion - returns the current FW status value
2611  * @regs:                       MFI register set
2612  */
2613 static u32
2614 megasas_read_fw_status_reg_fusion(struct megasas_register_set __iomem *regs)
2615 {
2616         return readl(&(regs)->outbound_scratch_pad);
2617 }
2618
2619 /**
2620  * megasas_alloc_host_crash_buffer -    Host buffers for Crash dump collection from Firmware
2621  * @instance:                           Controller's soft instance
2622  * return:                              Number of allocated host crash buffers
2623  */
2624 static void
2625 megasas_alloc_host_crash_buffer(struct megasas_instance *instance)
2626 {
2627         unsigned int i;
2628
2629         instance->crash_buf_pages = get_order(CRASH_DMA_BUF_SIZE);
2630         for (i = 0; i < MAX_CRASH_DUMP_SIZE; i++) {
2631                 instance->crash_buf[i] = (void  *)__get_free_pages(GFP_KERNEL,
2632                                 instance->crash_buf_pages);
2633                 if (!instance->crash_buf[i]) {
2634                         dev_info(&instance->pdev->dev, "Firmware crash dump "
2635                                 "memory allocation failed at index %d\n", i);
2636                         break;
2637                 }
2638                 memset(instance->crash_buf[i], 0,
2639                         ((1 << PAGE_SHIFT) << instance->crash_buf_pages));
2640         }
2641         instance->drv_buf_alloc = i;
2642 }
2643
2644 /**
2645  * megasas_free_host_crash_buffer -     Host buffers for Crash dump collection from Firmware
2646  * @instance:                           Controller's soft instance
2647  */
2648 void
2649 megasas_free_host_crash_buffer(struct megasas_instance *instance)
2650 {
2651         unsigned int i
2652 ;
2653         for (i = 0; i < instance->drv_buf_alloc; i++) {
2654                 if (instance->crash_buf[i])
2655                         free_pages((ulong)instance->crash_buf[i],
2656                                         instance->crash_buf_pages);
2657         }
2658         instance->drv_buf_index = 0;
2659         instance->drv_buf_alloc = 0;
2660         instance->fw_crash_state = UNAVAILABLE;
2661         instance->fw_crash_buffer_size = 0;
2662 }
2663
2664 /**
2665  * megasas_adp_reset_fusion -   For controller reset
2666  * @regs:                               MFI register set
2667  */
2668 static int
2669 megasas_adp_reset_fusion(struct megasas_instance *instance,
2670                          struct megasas_register_set __iomem *regs)
2671 {
2672         u32 host_diag, abs_state, retry;
2673
2674         /* Now try to reset the chip */
2675         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2676         writel(MPI2_WRSEQ_1ST_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2677         writel(MPI2_WRSEQ_2ND_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2678         writel(MPI2_WRSEQ_3RD_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2679         writel(MPI2_WRSEQ_4TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2680         writel(MPI2_WRSEQ_5TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2681         writel(MPI2_WRSEQ_6TH_KEY_VALUE, &instance->reg_set->fusion_seq_offset);
2682
2683         /* Check that the diag write enable (DRWE) bit is on */
2684         host_diag = readl(&instance->reg_set->fusion_host_diag);
2685         retry = 0;
2686         while (!(host_diag & HOST_DIAG_WRITE_ENABLE)) {
2687                 msleep(100);
2688                 host_diag = readl(&instance->reg_set->fusion_host_diag);
2689                 if (retry++ == 100) {
2690                         dev_warn(&instance->pdev->dev,
2691                                 "Host diag unlock failed from %s %d\n",
2692                                 __func__, __LINE__);
2693                         break;
2694                 }
2695         }
2696         if (!(host_diag & HOST_DIAG_WRITE_ENABLE))
2697                 return -1;
2698
2699         /* Send chip reset command */
2700         writel(host_diag | HOST_DIAG_RESET_ADAPTER,
2701                 &instance->reg_set->fusion_host_diag);
2702         msleep(3000);
2703
2704         /* Make sure reset adapter bit is cleared */
2705         host_diag = readl(&instance->reg_set->fusion_host_diag);
2706         retry = 0;
2707         while (host_diag & HOST_DIAG_RESET_ADAPTER) {
2708                 msleep(100);
2709                 host_diag = readl(&instance->reg_set->fusion_host_diag);
2710                 if (retry++ == 1000) {
2711                         dev_warn(&instance->pdev->dev,
2712                                 "Diag reset adapter never cleared %s %d\n",
2713                                 __func__, __LINE__);
2714                         break;
2715                 }
2716         }
2717         if (host_diag & HOST_DIAG_RESET_ADAPTER)
2718                 return -1;
2719
2720         abs_state = instance->instancet->read_fw_status_reg(instance->reg_set)
2721                         & MFI_STATE_MASK;
2722         retry = 0;
2723
2724         while ((abs_state <= MFI_STATE_FW_INIT) && (retry++ < 1000)) {
2725                 msleep(100);
2726                 abs_state = instance->instancet->
2727                         read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2728         }
2729         if (abs_state <= MFI_STATE_FW_INIT) {
2730                 dev_warn(&instance->pdev->dev,
2731                         "fw state < MFI_STATE_FW_INIT, state = 0x%x %s %d\n",
2732                         abs_state, __func__, __LINE__);
2733                 return -1;
2734         }
2735
2736         return 0;
2737 }
2738
2739 /**
2740  * megasas_check_reset_fusion - For controller reset check
2741  * @regs:                               MFI register set
2742  */
2743 static int
2744 megasas_check_reset_fusion(struct megasas_instance *instance,
2745                            struct megasas_register_set __iomem *regs)
2746 {
2747         return 0;
2748 }
2749
2750 /* This function waits for outstanding commands on fusion to complete */
2751 int megasas_wait_for_outstanding_fusion(struct megasas_instance *instance,
2752                                         int reason, int *convert)
2753 {
2754         int i, outstanding, retval = 0, hb_seconds_missed = 0;
2755         u32 fw_state;
2756
2757         for (i = 0; i < resetwaittime; i++) {
2758                 /* Check if firmware is in fault state */
2759                 fw_state = instance->instancet->read_fw_status_reg(
2760                         instance->reg_set) & MFI_STATE_MASK;
2761                 if (fw_state == MFI_STATE_FAULT) {
2762                         dev_warn(&instance->pdev->dev, "Found FW in FAULT state,"
2763                                " will reset adapter scsi%d.\n",
2764                                 instance->host->host_no);
2765                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
2766                         retval = 1;
2767                         goto out;
2768                 }
2769
2770                 if (reason == MFI_IO_TIMEOUT_OCR) {
2771                         dev_info(&instance->pdev->dev,
2772                                 "MFI IO is timed out, initiating OCR\n");
2773                         megasas_complete_cmd_dpc_fusion((unsigned long)instance);
2774                         retval = 1;
2775                         goto out;
2776                 }
2777
2778                 /* If SR-IOV VF mode & heartbeat timeout, don't wait */
2779                 if (instance->requestorId && !reason) {
2780                         retval = 1;
2781                         goto out;
2782                 }
2783
2784                 /* If SR-IOV VF mode & I/O timeout, check for HB timeout */
2785                 if (instance->requestorId && reason) {
2786                         if (instance->hb_host_mem->HB.fwCounter !=
2787                             instance->hb_host_mem->HB.driverCounter) {
2788                                 instance->hb_host_mem->HB.driverCounter =
2789                                         instance->hb_host_mem->HB.fwCounter;
2790                                 hb_seconds_missed = 0;
2791                         } else {
2792                                 hb_seconds_missed++;
2793                                 if (hb_seconds_missed ==
2794                                     (MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF/HZ)) {
2795                                         dev_warn(&instance->pdev->dev, "SR-IOV:"
2796                                                " Heartbeat never completed "
2797                                                " while polling during I/O "
2798                                                " timeout handling for "
2799                                                "scsi%d.\n",
2800                                                instance->host->host_no);
2801                                                *convert = 1;
2802                                                retval = 1;
2803                                                goto out;
2804                                 }
2805                         }
2806                 }
2807
2808                 outstanding = atomic_read(&instance->fw_outstanding);
2809                 if (!outstanding)
2810                         goto out;
2811
2812                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2813                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2814                                "commands to complete for scsi%d\n", i,
2815                                outstanding, instance->host->host_no);
2816                         megasas_complete_cmd_dpc_fusion(
2817                                 (unsigned long)instance);
2818                 }
2819                 msleep(1000);
2820         }
2821
2822         if (atomic_read(&instance->fw_outstanding)) {
2823                 dev_err(&instance->pdev->dev, "pending commands remain after waiting, "
2824                        "will reset adapter scsi%d.\n",
2825                        instance->host->host_no);
2826                 retval = 1;
2827         }
2828 out:
2829         return retval;
2830 }
2831
2832 void  megasas_reset_reply_desc(struct megasas_instance *instance)
2833 {
2834         int i, j, count;
2835         struct fusion_context *fusion;
2836         union MPI2_REPLY_DESCRIPTORS_UNION *reply_desc;
2837
2838         fusion = instance->ctrl_context;
2839         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
2840         for (i = 0 ; i < count ; i++) {
2841                 fusion->last_reply_idx[i] = 0;
2842                 reply_desc = fusion->reply_frames_desc[i];
2843                 for (j = 0 ; j < fusion->reply_q_depth; j++, reply_desc++)
2844                         reply_desc->Words = cpu_to_le64(ULLONG_MAX);
2845         }
2846 }
2847
2848 /*
2849  * megasas_refire_mgmt_cmd :    Re-fire management commands
2850  * @instance:                           Controller's soft instance
2851 */
2852 void megasas_refire_mgmt_cmd(struct megasas_instance *instance)
2853 {
2854         int j;
2855         struct megasas_cmd_fusion *cmd_fusion;
2856         struct fusion_context *fusion;
2857         struct megasas_cmd *cmd_mfi;
2858         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2859         u16 smid;
2860         bool refire_cmd = 0;
2861
2862         fusion = instance->ctrl_context;
2863
2864         /* Re-fire management commands.
2865          * Do not traverse complet MPT frame pool. Start from max_scsi_cmds.
2866          */
2867         for (j = instance->max_scsi_cmds ; j < instance->max_fw_cmds; j++) {
2868                 cmd_fusion = fusion->cmd_list[j];
2869                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2870                 smid = le16_to_cpu(cmd_mfi->context.smid);
2871
2872                 if (!smid)
2873                         continue;
2874                 req_desc = megasas_get_request_descriptor
2875                                         (instance, smid - 1);
2876                 refire_cmd = req_desc && ((cmd_mfi->frame->dcmd.opcode !=
2877                                 cpu_to_le32(MR_DCMD_LD_MAP_GET_INFO)) &&
2878                                  (cmd_mfi->frame->dcmd.opcode !=
2879                                 cpu_to_le32(MR_DCMD_SYSTEM_PD_MAP_GET_INFO)))
2880                                 && !(cmd_mfi->flags & DRV_DCMD_SKIP_REFIRE);
2881                 if (refire_cmd)
2882                         megasas_fire_cmd_fusion(instance, req_desc);
2883                 else
2884                         megasas_return_cmd(instance, cmd_mfi);
2885         }
2886 }
2887
2888 /*
2889  * megasas_track_scsiio : Track SCSI IOs outstanding to a SCSI device
2890  * @instance: per adapter struct
2891  * @channel: the channel assigned by the OS
2892  * @id: the id assigned by the OS
2893  *
2894  * Returns SUCCESS if no IOs pending to SCSI device, else return FAILED
2895  */
2896
2897 static int megasas_track_scsiio(struct megasas_instance *instance,
2898                 int id, int channel)
2899 {
2900         int i, found = 0;
2901         struct megasas_cmd_fusion *cmd_fusion;
2902         struct fusion_context *fusion;
2903         fusion = instance->ctrl_context;
2904
2905         for (i = 0 ; i < instance->max_scsi_cmds; i++) {
2906                 cmd_fusion = fusion->cmd_list[i];
2907                 if (cmd_fusion->scmd &&
2908                         (cmd_fusion->scmd->device->id == id &&
2909                         cmd_fusion->scmd->device->channel == channel)) {
2910                         dev_info(&instance->pdev->dev,
2911                                 "SCSI commands pending to target"
2912                                 "channel %d id %d \tSMID: 0x%x\n",
2913                                 channel, id, cmd_fusion->index);
2914                         scsi_print_command(cmd_fusion->scmd);
2915                         found = 1;
2916                         break;
2917                 }
2918         }
2919
2920         return found ? FAILED : SUCCESS;
2921 }
2922
2923 /**
2924  * megasas_tm_response_code - translation of device response code
2925  * @ioc: per adapter object
2926  * @mpi_reply: MPI reply returned by firmware
2927  *
2928  * Return nothing.
2929  */
2930 static void
2931 megasas_tm_response_code(struct megasas_instance *instance,
2932                 struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply)
2933 {
2934         char *desc;
2935
2936         switch (mpi_reply->ResponseCode) {
2937         case MPI2_SCSITASKMGMT_RSP_TM_COMPLETE:
2938                 desc = "task management request completed";
2939                 break;
2940         case MPI2_SCSITASKMGMT_RSP_INVALID_FRAME:
2941                 desc = "invalid frame";
2942                 break;
2943         case MPI2_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2944                 desc = "task management request not supported";
2945                 break;
2946         case MPI2_SCSITASKMGMT_RSP_TM_FAILED:
2947                 desc = "task management request failed";
2948                 break;
2949         case MPI2_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2950                 desc = "task management request succeeded";
2951                 break;
2952         case MPI2_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2953                 desc = "invalid lun";
2954                 break;
2955         case 0xA:
2956                 desc = "overlapped tag attempted";
2957                 break;
2958         case MPI2_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2959                 desc = "task queued, however not sent to target";
2960                 break;
2961         default:
2962                 desc = "unknown";
2963                 break;
2964         }
2965         dev_dbg(&instance->pdev->dev, "response_code(%01x): %s\n",
2966                 mpi_reply->ResponseCode, desc);
2967         dev_dbg(&instance->pdev->dev,
2968                 "TerminationCount/DevHandle/Function/TaskType/IOCStat/IOCLoginfo"
2969                 " 0x%x/0x%x/0x%x/0x%x/0x%x/0x%x\n",
2970                 mpi_reply->TerminationCount, mpi_reply->DevHandle,
2971                 mpi_reply->Function, mpi_reply->TaskType,
2972                 mpi_reply->IOCStatus, mpi_reply->IOCLogInfo);
2973 }
2974
2975 /**
2976  * megasas_issue_tm - main routine for sending tm requests
2977  * @instance: per adapter struct
2978  * @device_handle: device handle
2979  * @channel: the channel assigned by the OS
2980  * @id: the id assigned by the OS
2981  * @type: MPI2_SCSITASKMGMT_TASKTYPE__XXX (defined in megaraid_sas_fusion.c)
2982  * @smid_task: smid assigned to the task
2983  * @m_type: TM_MUTEX_ON or TM_MUTEX_OFF
2984  * Context: user
2985  *
2986  * MegaRaid use MPT interface for Task Magement request.
2987  * A generic API for sending task management requests to firmware.
2988  *
2989  * Return SUCCESS or FAILED.
2990  */
2991 static int
2992 megasas_issue_tm(struct megasas_instance *instance, u16 device_handle,
2993         uint channel, uint id, u16 smid_task, u8 type)
2994 {
2995         struct MR_TASK_MANAGE_REQUEST *mr_request;
2996         struct MPI2_SCSI_TASK_MANAGE_REQUEST *mpi_request;
2997         unsigned long timeleft;
2998         struct megasas_cmd_fusion *cmd_fusion;
2999         struct megasas_cmd *cmd_mfi;
3000         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3001         struct fusion_context *fusion;
3002         struct megasas_cmd_fusion *scsi_lookup;
3003         int rc;
3004         struct MPI2_SCSI_TASK_MANAGE_REPLY *mpi_reply;
3005
3006         fusion = instance->ctrl_context;
3007
3008         cmd_mfi = megasas_get_cmd(instance);
3009
3010         if (!cmd_mfi) {
3011                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
3012                         __func__, __LINE__);
3013                 return -ENOMEM;
3014         }
3015
3016         cmd_fusion = megasas_get_cmd_fusion(instance,
3017                         instance->max_scsi_cmds + cmd_mfi->index);
3018
3019         /*  Save the smid. To be used for returning the cmd */
3020         cmd_mfi->context.smid = cmd_fusion->index;
3021
3022         req_desc = megasas_get_request_descriptor(instance,
3023                         (cmd_fusion->index - 1));
3024         if (!req_desc) {
3025                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
3026                         __func__, __LINE__);
3027                 megasas_return_cmd(instance, cmd_mfi);
3028                 return -ENOMEM;
3029         }
3030
3031         cmd_fusion->request_desc = req_desc;
3032         req_desc->Words = 0;
3033
3034         scsi_lookup = fusion->cmd_list[smid_task - 1];
3035
3036         mr_request = (struct MR_TASK_MANAGE_REQUEST *) cmd_fusion->io_request;
3037         memset(mr_request, 0, sizeof(struct MR_TASK_MANAGE_REQUEST));
3038         mpi_request = (struct MPI2_SCSI_TASK_MANAGE_REQUEST *) &mr_request->TmRequest;
3039         mpi_request->Function = MPI2_FUNCTION_SCSI_TASK_MGMT;
3040         mpi_request->DevHandle = cpu_to_le16(device_handle);
3041         mpi_request->TaskType = type;
3042         mpi_request->TaskMID = cpu_to_le16(smid_task);
3043         mpi_request->LUN[1] = 0;
3044
3045
3046         req_desc = cmd_fusion->request_desc;
3047         req_desc->HighPriority.SMID = cpu_to_le16(cmd_fusion->index);
3048         req_desc->HighPriority.RequestFlags =
3049                 (MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY <<
3050                 MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT);
3051         req_desc->HighPriority.MSIxIndex =  0;
3052         req_desc->HighPriority.LMID = 0;
3053         req_desc->HighPriority.Reserved1 = 0;
3054
3055         if (channel < MEGASAS_MAX_PD_CHANNELS)
3056                 mr_request->tmReqFlags.isTMForPD = 1;
3057         else
3058                 mr_request->tmReqFlags.isTMForLD = 1;
3059
3060         init_completion(&cmd_fusion->done);
3061         megasas_fire_cmd_fusion(instance, req_desc);
3062
3063         timeleft = wait_for_completion_timeout(&cmd_fusion->done, 50 * HZ);
3064
3065         if (!timeleft) {
3066                 dev_err(&instance->pdev->dev,
3067                         "task mgmt type 0x%x timed out\n", type);
3068                 cmd_mfi->flags |= DRV_DCMD_SKIP_REFIRE;
3069                 mutex_unlock(&instance->reset_mutex);
3070                 rc = megasas_reset_fusion(instance->host, MFI_IO_TIMEOUT_OCR);
3071                 mutex_lock(&instance->reset_mutex);
3072                 return rc;
3073         }
3074
3075         mpi_reply = (struct MPI2_SCSI_TASK_MANAGE_REPLY *) &mr_request->TMReply;
3076         megasas_tm_response_code(instance, mpi_reply);
3077
3078         megasas_return_cmd(instance, cmd_mfi);
3079         rc = SUCCESS;
3080         switch (type) {
3081         case MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
3082                 if (scsi_lookup->scmd == NULL)
3083                         break;
3084                 else {
3085                         instance->instancet->disable_intr(instance);
3086                         msleep(1000);
3087                         megasas_complete_cmd_dpc_fusion
3088                                         ((unsigned long)instance);
3089                         instance->instancet->enable_intr(instance);
3090                         if (scsi_lookup->scmd == NULL)
3091                                 break;
3092                 }
3093                 rc = FAILED;
3094                 break;
3095
3096         case MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
3097                 if ((channel == 0xFFFFFFFF) && (id == 0xFFFFFFFF))
3098                         break;
3099                 instance->instancet->disable_intr(instance);
3100                 msleep(1000);
3101                 megasas_complete_cmd_dpc_fusion
3102                                 ((unsigned long)instance);
3103                 rc = megasas_track_scsiio(instance, id, channel);
3104                 instance->instancet->enable_intr(instance);
3105
3106                 break;
3107         case MPI2_SCSITASKMGMT_TASKTYPE_ABRT_TASK_SET:
3108         case MPI2_SCSITASKMGMT_TASKTYPE_QUERY_TASK:
3109                 break;
3110         default:
3111                 rc = FAILED;
3112                 break;
3113         }
3114
3115         return rc;
3116
3117 }
3118
3119 /*
3120  * megasas_fusion_smid_lookup : Look for fusion command correpspodning to SCSI
3121  * @instance: per adapter struct
3122  *
3123  * Return Non Zero index, if SMID found in outstanding commands
3124  */
3125 static u16 megasas_fusion_smid_lookup(struct scsi_cmnd *scmd)
3126 {
3127         int i, ret = 0;
3128         struct megasas_instance *instance;
3129         struct megasas_cmd_fusion *cmd_fusion;
3130         struct fusion_context *fusion;
3131
3132         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3133
3134         fusion = instance->ctrl_context;
3135
3136         for (i = 0; i < instance->max_scsi_cmds; i++) {
3137                 cmd_fusion = fusion->cmd_list[i];
3138                 if (cmd_fusion->scmd && (cmd_fusion->scmd == scmd)) {
3139                         scmd_printk(KERN_NOTICE, scmd, "Abort request is for"
3140                                 " SMID: %d\n", cmd_fusion->index);
3141                         ret = cmd_fusion->index;
3142                         break;
3143                 }
3144         }
3145
3146         return ret;
3147 }
3148
3149 /*
3150 * megasas_get_tm_devhandle - Get devhandle for TM request
3151 * @sdev-                     OS provided scsi device
3152 *
3153 * Returns-                   devhandle/targetID of SCSI device
3154 */
3155 static u16 megasas_get_tm_devhandle(struct scsi_device *sdev)
3156 {
3157         u16 pd_index = 0;
3158         u32 device_id;
3159         struct megasas_instance *instance;
3160         struct fusion_context *fusion;
3161         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
3162         u16 devhandle = (u16)ULONG_MAX;
3163
3164         instance = (struct megasas_instance *)sdev->host->hostdata;
3165         fusion = instance->ctrl_context;
3166
3167         if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
3168                 if (instance->use_seqnum_jbod_fp) {
3169                                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
3170                                                 sdev->id;
3171                                 pd_sync = (void *)fusion->pd_seq_sync
3172                                                 [(instance->pd_seq_map_id - 1) & 1];
3173                                 devhandle = pd_sync->seq[pd_index].devHandle;
3174                 } else
3175                         sdev_printk(KERN_ERR, sdev, "Firmware expose tmCapable"
3176                                 " without JBOD MAP support from %s %d\n", __func__, __LINE__);
3177         } else {
3178                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
3179                                 + sdev->id;
3180                 devhandle = device_id;
3181         }
3182
3183         return devhandle;
3184 }
3185
3186 /*
3187  * megasas_task_abort_fusion : SCSI task abort function for fusion adapters
3188  * @scmd : pointer to scsi command object
3189  *
3190  * Return SUCCESS, if command aborted else FAILED
3191  */
3192
3193 int megasas_task_abort_fusion(struct scsi_cmnd *scmd)
3194 {
3195         struct megasas_instance *instance;
3196         u16 smid, devhandle;
3197         struct fusion_context *fusion;
3198         int ret;
3199         struct MR_PRIV_DEVICE *mr_device_priv_data;
3200         mr_device_priv_data = scmd->device->hostdata;
3201
3202
3203         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3204         fusion = instance->ctrl_context;
3205
3206         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
3207                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
3208                 "SCSI host:%d\n", instance->host->host_no);
3209                 ret = FAILED;
3210                 return ret;
3211         }
3212
3213         if (!mr_device_priv_data) {
3214                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
3215                         "scmd(%p)\n", scmd);
3216                 scmd->result = DID_NO_CONNECT << 16;
3217                 ret = SUCCESS;
3218                 goto out;
3219         }
3220
3221
3222         if (!mr_device_priv_data->is_tm_capable) {
3223                 ret = FAILED;
3224                 goto out;
3225         }
3226
3227         mutex_lock(&instance->reset_mutex);
3228
3229         smid = megasas_fusion_smid_lookup(scmd);
3230
3231         if (!smid) {
3232                 ret = SUCCESS;
3233                 scmd_printk(KERN_NOTICE, scmd, "Command for which abort is"
3234                         " issued is not found in oustanding commands\n");
3235                 mutex_unlock(&instance->reset_mutex);
3236                 goto out;
3237         }
3238
3239         devhandle = megasas_get_tm_devhandle(scmd->device);
3240
3241         if (devhandle == (u16)ULONG_MAX) {
3242                 ret = SUCCESS;
3243                 sdev_printk(KERN_INFO, scmd->device,
3244                         "task abort issued for invalid devhandle\n");
3245                 mutex_unlock(&instance->reset_mutex);
3246                 goto out;
3247         }
3248         sdev_printk(KERN_INFO, scmd->device,
3249                 "attempting task abort! scmd(%p) tm_dev_handle 0x%x\n",
3250                 scmd, devhandle);
3251
3252         mr_device_priv_data->tm_busy = 1;
3253         ret = megasas_issue_tm(instance, devhandle,
3254                         scmd->device->channel, scmd->device->id, smid,
3255                         MPI2_SCSITASKMGMT_TASKTYPE_ABORT_TASK);
3256         mr_device_priv_data->tm_busy = 0;
3257
3258         mutex_unlock(&instance->reset_mutex);
3259 out:
3260         sdev_printk(KERN_INFO, scmd->device, "task abort: %s scmd(%p)\n",
3261                         ((ret == SUCCESS) ? "SUCCESS" : "FAILED"), scmd);
3262
3263         return ret;
3264 }
3265
3266 /*
3267  * megasas_reset_target_fusion : target reset function for fusion adapters
3268  * scmd: SCSI command pointer
3269  *
3270  * Returns SUCCESS if all commands associated with target aborted else FAILED
3271  */
3272
3273 int megasas_reset_target_fusion(struct scsi_cmnd *scmd)
3274 {
3275
3276         struct megasas_instance *instance;
3277         int ret = FAILED;
3278         u16 devhandle;
3279         struct fusion_context *fusion;
3280         struct MR_PRIV_DEVICE *mr_device_priv_data;
3281         mr_device_priv_data = scmd->device->hostdata;
3282
3283         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3284         fusion = instance->ctrl_context;
3285
3286         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
3287                 dev_err(&instance->pdev->dev, "Controller is not OPERATIONAL,"
3288                 "SCSI host:%d\n", instance->host->host_no);
3289                 ret = FAILED;
3290                 return ret;
3291         }
3292
3293         if (!mr_device_priv_data) {
3294                 sdev_printk(KERN_INFO, scmd->device, "device been deleted! "
3295                         "scmd(%p)\n", scmd);
3296                 scmd->result = DID_NO_CONNECT << 16;
3297                 ret = SUCCESS;
3298                 goto out;
3299         }
3300
3301
3302         if (!mr_device_priv_data->is_tm_capable) {
3303                 ret = FAILED;
3304                 goto out;
3305         }
3306
3307         mutex_lock(&instance->reset_mutex);
3308         devhandle = megasas_get_tm_devhandle(scmd->device);
3309
3310         if (devhandle == (u16)ULONG_MAX) {
3311                 ret = SUCCESS;
3312                 sdev_printk(KERN_INFO, scmd->device,
3313                         "target reset issued for invalid devhandle\n");
3314                 mutex_unlock(&instance->reset_mutex);
3315                 goto out;
3316         }
3317
3318         sdev_printk(KERN_INFO, scmd->device,
3319                 "attempting target reset! scmd(%p) tm_dev_handle 0x%x\n",
3320                 scmd, devhandle);
3321         mr_device_priv_data->tm_busy = 1;
3322         ret = megasas_issue_tm(instance, devhandle,
3323                         scmd->device->channel, scmd->device->id, 0,
3324                         MPI2_SCSITASKMGMT_TASKTYPE_TARGET_RESET);
3325         mr_device_priv_data->tm_busy = 0;
3326         mutex_unlock(&instance->reset_mutex);
3327 out:
3328         scmd_printk(KERN_NOTICE, scmd, "megasas: target reset %s!!\n",
3329                 (ret == SUCCESS) ? "SUCCESS" : "FAILED");
3330
3331         return ret;
3332 }
3333
3334 /*SRIOV get other instance in cluster if any*/
3335 struct megasas_instance *megasas_get_peer_instance(struct megasas_instance *instance)
3336 {
3337         int i;
3338
3339         for (i = 0; i < MAX_MGMT_ADAPTERS; i++) {
3340                 if (megasas_mgmt_info.instance[i] &&
3341                         (megasas_mgmt_info.instance[i] != instance) &&
3342                          megasas_mgmt_info.instance[i]->requestorId &&
3343                          megasas_mgmt_info.instance[i]->peerIsPresent &&
3344                         (memcmp((megasas_mgmt_info.instance[i]->clusterId),
3345                         instance->clusterId, MEGASAS_CLUSTER_ID_SIZE) == 0))
3346                         return megasas_mgmt_info.instance[i];
3347         }
3348         return NULL;
3349 }
3350
3351 /* Check for a second path that is currently UP */
3352 int megasas_check_mpio_paths(struct megasas_instance *instance,
3353         struct scsi_cmnd *scmd)
3354 {
3355         struct megasas_instance *peer_instance = NULL;
3356         int retval = (DID_RESET << 16);
3357
3358         if (instance->peerIsPresent) {
3359                 peer_instance = megasas_get_peer_instance(instance);
3360                 if ((peer_instance) &&
3361                         (atomic_read(&peer_instance->adprecovery) ==
3362                         MEGASAS_HBA_OPERATIONAL))
3363                         retval = (DID_NO_CONNECT << 16);
3364         }
3365         return retval;
3366 }
3367
3368 /* Core fusion reset function */
3369 int megasas_reset_fusion(struct Scsi_Host *shost, int reason)
3370 {
3371         int retval = SUCCESS, i, convert = 0;
3372         struct megasas_instance *instance;
3373         struct megasas_cmd_fusion *cmd_fusion;
3374         struct fusion_context *fusion;
3375         u32 abs_state, status_reg, reset_adapter;
3376         u32 io_timeout_in_crash_mode = 0;
3377         struct scsi_cmnd *scmd_local = NULL;
3378         struct scsi_device *sdev;
3379
3380         instance = (struct megasas_instance *)shost->hostdata;
3381         fusion = instance->ctrl_context;
3382
3383         mutex_lock(&instance->reset_mutex);
3384
3385         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
3386                 dev_warn(&instance->pdev->dev, "Hardware critical error, "
3387                        "returning FAILED for scsi%d.\n",
3388                         instance->host->host_no);
3389                 mutex_unlock(&instance->reset_mutex);
3390                 return FAILED;
3391         }
3392         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
3393         abs_state = status_reg & MFI_STATE_MASK;
3394
3395         /* IO timeout detected, forcibly put FW in FAULT state */
3396         if (abs_state != MFI_STATE_FAULT && instance->crash_dump_buf &&
3397                 instance->crash_dump_app_support && reason) {
3398                 dev_info(&instance->pdev->dev, "IO/DCMD timeout is detected, "
3399                         "forcibly FAULT Firmware\n");
3400                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3401                 status_reg = readl(&instance->reg_set->doorbell);
3402                 writel(status_reg | MFI_STATE_FORCE_OCR,
3403                         &instance->reg_set->doorbell);
3404                 readl(&instance->reg_set->doorbell);
3405                 mutex_unlock(&instance->reset_mutex);
3406                 do {
3407                         ssleep(3);
3408                         io_timeout_in_crash_mode++;
3409                         dev_dbg(&instance->pdev->dev, "waiting for [%d] "
3410                                 "seconds for crash dump collection and OCR "
3411                                 "to be done\n", (io_timeout_in_crash_mode * 3));
3412                 } while ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
3413                         (io_timeout_in_crash_mode < 80));
3414
3415                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
3416                         dev_info(&instance->pdev->dev, "OCR done for IO "
3417                                 "timeout case\n");
3418                         retval = SUCCESS;
3419                 } else {
3420                         dev_info(&instance->pdev->dev, "Controller is not "
3421                                 "operational after 240 seconds wait for IO "
3422                                 "timeout case in FW crash dump mode\n do "
3423                                 "OCR/kill adapter\n");
3424                         retval = megasas_reset_fusion(shost, 0);
3425                 }
3426                 return retval;
3427         }
3428
3429         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
3430                 del_timer_sync(&instance->sriov_heartbeat_timer);
3431         set_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
3432         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_POLLING);
3433         instance->instancet->disable_intr(instance);
3434         msleep(1000);
3435
3436         /* First try waiting for commands to complete */
3437         if (megasas_wait_for_outstanding_fusion(instance, reason,
3438                                                 &convert)) {
3439                 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3440                 dev_warn(&instance->pdev->dev, "resetting fusion "
3441                        "adapter scsi%d.\n", instance->host->host_no);
3442                 if (convert)
3443                         reason = 0;
3444
3445                 /* Now return commands back to the OS */
3446                 for (i = 0 ; i < instance->max_scsi_cmds; i++) {
3447                         cmd_fusion = fusion->cmd_list[i];
3448                         scmd_local = cmd_fusion->scmd;
3449                         if (cmd_fusion->scmd) {
3450                                 scmd_local->result =
3451                                         megasas_check_mpio_paths(instance,
3452                                                         scmd_local);
3453                                 if (megasas_cmd_type(scmd_local) == READ_WRITE_LDIO)
3454                                         atomic_dec(&instance->ldio_outstanding);
3455                                 megasas_return_cmd_fusion(instance, cmd_fusion);
3456                                 scsi_dma_unmap(scmd_local);
3457                                 scmd_local->scsi_done(scmd_local);
3458                                 atomic_dec(&instance->fw_outstanding);
3459                         }
3460                 }
3461
3462                 status_reg = instance->instancet->read_fw_status_reg(
3463                         instance->reg_set);
3464                 abs_state = status_reg & MFI_STATE_MASK;
3465                 reset_adapter = status_reg & MFI_RESET_ADAPTER;
3466                 if (instance->disableOnlineCtrlReset ||
3467                     (abs_state == MFI_STATE_FAULT && !reset_adapter)) {
3468                         /* Reset not supported, kill adapter */
3469                         dev_warn(&instance->pdev->dev, "Reset not supported"
3470                                ", killing adapter scsi%d.\n",
3471                                 instance->host->host_no);
3472                         megaraid_sas_kill_hba(instance);
3473                         instance->skip_heartbeat_timer_del = 1;
3474                         retval = FAILED;
3475                         goto out;
3476                 }
3477
3478                 /* Let SR-IOV VF & PF sync up if there was a HB failure */
3479                 if (instance->requestorId && !reason) {
3480                         msleep(MEGASAS_OCR_SETTLE_TIME_VF);
3481                         goto transition_to_ready;
3482                 }
3483
3484                 /* Now try to reset the chip */
3485                 for (i = 0; i < MEGASAS_FUSION_MAX_RESET_TRIES; i++) {
3486
3487                         if (instance->instancet->adp_reset
3488                                 (instance, instance->reg_set))
3489                                 continue;
3490 transition_to_ready:
3491                         /* Wait for FW to become ready */
3492                         if (megasas_transition_to_ready(instance, 1)) {
3493                                 dev_warn(&instance->pdev->dev,
3494                                         "Failed to transition controller to ready for "
3495                                         "scsi%d.\n", instance->host->host_no);
3496                                 if (instance->requestorId && !reason)
3497                                         goto fail_kill_adapter;
3498                                 else
3499                                         continue;
3500                         }
3501                         megasas_reset_reply_desc(instance);
3502                         megasas_fusion_update_can_queue(instance, OCR_CONTEXT);
3503
3504                         if (megasas_ioc_init_fusion(instance)) {
3505                                 dev_warn(&instance->pdev->dev,
3506                                        "megasas_ioc_init_fusion() failed! for "
3507                                        "scsi%d\n", instance->host->host_no);
3508                                 if (instance->requestorId && !reason)
3509                                         goto fail_kill_adapter;
3510                                 else
3511                                         continue;
3512                         }
3513
3514                         megasas_refire_mgmt_cmd(instance);
3515
3516                         if (megasas_get_ctrl_info(instance)) {
3517                                 dev_info(&instance->pdev->dev,
3518                                         "Failed from %s %d\n",
3519                                         __func__, __LINE__);
3520                                 megaraid_sas_kill_hba(instance);
3521                                 retval = FAILED;
3522                         }
3523                         /* Reset load balance info */
3524                         memset(fusion->load_balance_info, 0,
3525                                sizeof(struct LD_LOAD_BALANCE_INFO)
3526                                *MAX_LOGICAL_DRIVES_EXT);
3527
3528                         if (!megasas_get_map_info(instance))
3529                                 megasas_sync_map_info(instance);
3530
3531                         megasas_setup_jbod_map(instance);
3532
3533                         shost_for_each_device(sdev, shost)
3534                                 megasas_update_sdev_properties(sdev);
3535
3536                         clear_bit(MEGASAS_FUSION_IN_RESET,
3537                                   &instance->reset_flags);
3538                         instance->instancet->enable_intr(instance);
3539                         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3540
3541                         /* Restart SR-IOV heartbeat */
3542                         if (instance->requestorId) {
3543                                 if (!megasas_sriov_start_heartbeat(instance, 0))
3544                                         megasas_start_timer(instance,
3545                                                             &instance->sriov_heartbeat_timer,
3546                                                             megasas_sriov_heartbeat_handler,
3547                                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
3548                                 else
3549                                         instance->skip_heartbeat_timer_del = 1;
3550                         }
3551
3552                         /* Adapter reset completed successfully */
3553                         dev_warn(&instance->pdev->dev, "Reset "
3554                                "successful for scsi%d.\n",
3555                                 instance->host->host_no);
3556
3557                         if (instance->crash_dump_drv_support &&
3558                                 instance->crash_dump_app_support)
3559                                 megasas_set_crash_dump_params(instance,
3560                                         MR_CRASH_BUF_TURN_ON);
3561                         else
3562                                 megasas_set_crash_dump_params(instance,
3563                                         MR_CRASH_BUF_TURN_OFF);
3564
3565                         retval = SUCCESS;
3566                         goto out;
3567                 }
3568 fail_kill_adapter:
3569                 /* Reset failed, kill the adapter */
3570                 dev_warn(&instance->pdev->dev, "Reset failed, killing "
3571                        "adapter scsi%d.\n", instance->host->host_no);
3572                 megaraid_sas_kill_hba(instance);
3573                 instance->skip_heartbeat_timer_del = 1;
3574                 retval = FAILED;
3575         } else {
3576                 /* For VF: Restart HB timer if we didn't OCR */
3577                 if (instance->requestorId) {
3578                         megasas_start_timer(instance,
3579                                             &instance->sriov_heartbeat_timer,
3580                                             megasas_sriov_heartbeat_handler,
3581                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
3582                 }
3583                 clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
3584                 instance->instancet->enable_intr(instance);
3585                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3586         }
3587 out:
3588         clear_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags);
3589         mutex_unlock(&instance->reset_mutex);
3590         return retval;
3591 }
3592
3593 /* Fusion Crash dump collection work queue */
3594 void  megasas_fusion_crash_dump_wq(struct work_struct *work)
3595 {
3596         struct megasas_instance *instance =
3597                 container_of(work, struct megasas_instance, crash_init);
3598         u32 status_reg;
3599         u8 partial_copy = 0;
3600
3601
3602         status_reg = instance->instancet->read_fw_status_reg(instance->reg_set);
3603
3604         /*
3605          * Allocate host crash buffers to copy data from 1 MB DMA crash buffer
3606          * to host crash buffers
3607          */
3608         if (instance->drv_buf_index == 0) {
3609                 /* Buffer is already allocated for old Crash dump.
3610                  * Do OCR and do not wait for crash dump collection
3611                  */
3612                 if (instance->drv_buf_alloc) {
3613                         dev_info(&instance->pdev->dev, "earlier crash dump is "
3614                                 "not yet copied by application, ignoring this "
3615                                 "crash dump and initiating OCR\n");
3616                         status_reg |= MFI_STATE_CRASH_DUMP_DONE;
3617                         writel(status_reg,
3618                                 &instance->reg_set->outbound_scratch_pad);
3619                         readl(&instance->reg_set->outbound_scratch_pad);
3620                         return;
3621                 }
3622                 megasas_alloc_host_crash_buffer(instance);
3623                 dev_info(&instance->pdev->dev, "Number of host crash buffers "
3624                         "allocated: %d\n", instance->drv_buf_alloc);
3625         }
3626
3627         /*
3628          * Driver has allocated max buffers, which can be allocated
3629          * and FW has more crash dump data, then driver will
3630          * ignore the data.
3631          */
3632         if (instance->drv_buf_index >= (instance->drv_buf_alloc)) {
3633                 dev_info(&instance->pdev->dev, "Driver is done copying "
3634                         "the buffer: %d\n", instance->drv_buf_alloc);
3635                 status_reg |= MFI_STATE_CRASH_DUMP_DONE;
3636                 partial_copy = 1;
3637         } else {
3638                 memcpy(instance->crash_buf[instance->drv_buf_index],
3639                         instance->crash_dump_buf, CRASH_DMA_BUF_SIZE);
3640                 instance->drv_buf_index++;
3641                 status_reg &= ~MFI_STATE_DMADONE;
3642         }
3643
3644         if (status_reg & MFI_STATE_CRASH_DUMP_DONE) {
3645                 dev_info(&instance->pdev->dev, "Crash Dump is available,number "
3646                         "of copied buffers: %d\n", instance->drv_buf_index);
3647                 instance->fw_crash_buffer_size =  instance->drv_buf_index;
3648                 instance->fw_crash_state = AVAILABLE;
3649                 instance->drv_buf_index = 0;
3650                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
3651                 readl(&instance->reg_set->outbound_scratch_pad);
3652                 if (!partial_copy)
3653                         megasas_reset_fusion(instance->host, 0);
3654         } else {
3655                 writel(status_reg, &instance->reg_set->outbound_scratch_pad);
3656                 readl(&instance->reg_set->outbound_scratch_pad);
3657         }
3658 }
3659
3660
3661 /* Fusion OCR work queue */
3662 void megasas_fusion_ocr_wq(struct work_struct *work)
3663 {
3664         struct megasas_instance *instance =
3665                 container_of(work, struct megasas_instance, work_init);
3666
3667         megasas_reset_fusion(instance->host, 0);
3668 }
3669
3670 struct megasas_instance_template megasas_instance_template_fusion = {
3671         .enable_intr = megasas_enable_intr_fusion,
3672         .disable_intr = megasas_disable_intr_fusion,
3673         .clear_intr = megasas_clear_intr_fusion,
3674         .read_fw_status_reg = megasas_read_fw_status_reg_fusion,
3675         .adp_reset = megasas_adp_reset_fusion,
3676         .check_reset = megasas_check_reset_fusion,
3677         .service_isr = megasas_isr_fusion,
3678         .tasklet = megasas_complete_cmd_dpc_fusion,
3679         .init_adapter = megasas_init_adapter_fusion,
3680         .build_and_issue_cmd = megasas_build_and_issue_cmd_fusion,
3681         .issue_dcmd = megasas_issue_dcmd_fusion,
3682 };