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