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