drivers/scsi/megaraid/megaraid_sas_base.c

   1 /*
   2  *  Linux MegaRAID driver for SAS based RAID controllers
   3  *
   4  *  Copyright (c) 2003-2013  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  *  Authors: Avago Technologies
  21  *           Sreenivas Bagalkote
  22  *           Sumant Patro
  23  *           Bo Yang
  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/slab.h>
  45 #include <asm/uaccess.h>
  46 #include <linux/fs.h>
  47 #include <linux/compat.h>
  48 #include <linux/blkdev.h>
  49 #include <linux/mutex.h>
  50 #include <linux/poll.h>
  51
  52 #include <scsi/scsi.h>
  53 #include <scsi/scsi_cmnd.h>
  54 #include <scsi/scsi_device.h>
  55 #include <scsi/scsi_host.h>
  56 #include <scsi/scsi_tcq.h>
  57 #include "megaraid_sas_fusion.h"
  58 #include "megaraid_sas.h"
  59
  60 /*
  61  * Number of sectors per IO command
  62  * Will be set in megasas_init_mfi if user does not provide
  63  */
  64 static unsigned int max_sectors;
  65 module_param_named(max_sectors, max_sectors, int, 0);
  66 MODULE_PARM_DESC(max_sectors,
  67         "Maximum number of sectors per IO command");
  68
  69 static int msix_disable;
  70 module_param(msix_disable, int, S_IRUGO);
  71 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
  72
  73 static unsigned int msix_vectors;
  74 module_param(msix_vectors, int, S_IRUGO);
  75 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
  76
  77 static int allow_vf_ioctls;
  78 module_param(allow_vf_ioctls, int, S_IRUGO);
  79 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
  80
  81 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
  82 module_param(throttlequeuedepth, int, S_IRUGO);
  83 MODULE_PARM_DESC(throttlequeuedepth,
  84         "Adapter queue depth when throttled due to I/O timeout. Default: 16");
  85
  86 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
  87 module_param(resetwaittime, int, S_IRUGO);
  88 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
  89                  "before resetting adapter. Default: 180");
  90
  91 int smp_affinity_enable = 1;
  92 module_param(smp_affinity_enable, int, S_IRUGO);
  93 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
  94
  95 int rdpq_enable = 1;
  96 module_param(rdpq_enable, int, S_IRUGO);
  97 MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)");
  98
  99 unsigned int dual_qdepth_disable;
 100 module_param(dual_qdepth_disable, int, S_IRUGO);
 101 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
 102
 103 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
 104 module_param(scmd_timeout, int, S_IRUGO);
 105 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
 106
 107 MODULE_LICENSE("GPL");
 108 MODULE_VERSION(MEGASAS_VERSION);
 109 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
 110 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
 111
 112 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
 113 static int megasas_get_pd_list(struct megasas_instance *instance);
 114 static int megasas_ld_list_query(struct megasas_instance *instance,
 115                                  u8 query_type);
 116 static int megasas_issue_init_mfi(struct megasas_instance *instance);
 117 static int megasas_register_aen(struct megasas_instance *instance,
 118                                 u32 seq_num, u32 class_locale_word);
 119 static int
 120 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id);
 121 /*
 122  * PCI ID table for all supported controllers
 123  */
 124 static struct pci_device_id megasas_pci_table[] = {
 125
 126         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
 127         /* xscale IOP */
 128         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
 129         /* ppc IOP */
 130         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
 131         /* ppc IOP */
 132         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
 133         /* gen2*/
 134         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
 135         /* gen2*/
 136         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
 137         /* skinny*/
 138         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
 139         /* skinny*/
 140         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
 141         /* xscale IOP, vega */
 142         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
 143         /* xscale IOP */
 144         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
 145         /* Fusion */
 146         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
 147         /* Plasma */
 148         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
 149         /* Invader */
 150         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
 151         /* Fury */
 152         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
 153         /* Intruder */
 154         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
 155         /* Intruder 24 port*/
 156         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
 157         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 158         {}
 159 };
 160
 161 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
 162
 163 static int megasas_mgmt_majorno;
 164 struct megasas_mgmt_info megasas_mgmt_info;
 165 static struct fasync_struct *megasas_async_queue;
 166 static DEFINE_MUTEX(megasas_async_queue_mutex);
 167
 168 static int megasas_poll_wait_aen;
 169 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
 170 static u32 support_poll_for_event;
 171 u32 megasas_dbg_lvl;
 172 static u32 support_device_change;
 173
 174 /* define lock for aen poll */
 175 spinlock_t poll_aen_lock;
 176
 177 void
 178 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 179                      u8 alt_status);
 180 static u32
 181 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
 182 static int
 183 megasas_adp_reset_gen2(struct megasas_instance *instance,
 184                        struct megasas_register_set __iomem *reg_set);
 185 static irqreturn_t megasas_isr(int irq, void *devp);
 186 static u32
 187 megasas_init_adapter_mfi(struct megasas_instance *instance);
 188 u32
 189 megasas_build_and_issue_cmd(struct megasas_instance *instance,
 190                             struct scsi_cmnd *scmd);
 191 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
 192 int
 193 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 194         int seconds);
 195 void megasas_fusion_ocr_wq(struct work_struct *work);
 196 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 197                                          int initial);
 198
 199 int
 200 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 201 {
 202         instance->instancet->fire_cmd(instance,
 203                 cmd->frame_phys_addr, 0, instance->reg_set);
 204         return 0;
 205 }
 206
 207 /**
 208  * megasas_get_cmd -    Get a command from the free pool
 209  * @instance:           Adapter soft state
 210  *
 211  * Returns a free command from the pool
 212  */
 213 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
 214                                                   *instance)
 215 {
 216         unsigned long flags;
 217         struct megasas_cmd *cmd = NULL;
 218
 219         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 220
 221         if (!list_empty(&instance->cmd_pool)) {
 222                 cmd = list_entry((&instance->cmd_pool)->next,
 223                                  struct megasas_cmd, list);
 224                 list_del_init(&cmd->list);
 225         } else {
 226                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
 227         }
 228
 229         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 230         return cmd;
 231 }
 232
 233 /**
 234  * megasas_return_cmd - Return a cmd to free command pool
 235  * @instance:           Adapter soft state
 236  * @cmd:                Command packet to be returned to free command pool
 237  */
 238 inline void
 239 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 240 {
 241         unsigned long flags;
 242         u32 blk_tags;
 243         struct megasas_cmd_fusion *cmd_fusion;
 244         struct fusion_context *fusion = instance->ctrl_context;
 245
 246         /* This flag is used only for fusion adapter.
 247          * Wait for Interrupt for Polled mode DCMD
 248          */
 249         if (cmd->flags & DRV_DCMD_POLLED_MODE)
 250                 return;
 251
 252         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 253
 254         if (fusion) {
 255                 blk_tags = instance->max_scsi_cmds + cmd->index;
 256                 cmd_fusion = fusion->cmd_list[blk_tags];
 257                 megasas_return_cmd_fusion(instance, cmd_fusion);
 258         }
 259         cmd->scmd = NULL;
 260         cmd->frame_count = 0;
 261         cmd->flags = 0;
 262         if (!fusion && reset_devices)
 263                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 264         list_add(&cmd->list, (&instance->cmd_pool)->next);
 265
 266         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 267
 268 }
 269
 270 static const char *
 271 format_timestamp(uint32_t timestamp)
 272 {
 273         static char buffer[32];
 274
 275         if ((timestamp & 0xff000000) == 0xff000000)
 276                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
 277                 0x00ffffff);
 278         else
 279                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
 280         return buffer;
 281 }
 282
 283 static const char *
 284 format_class(int8_t class)
 285 {
 286         static char buffer[6];
 287
 288         switch (class) {
 289         case MFI_EVT_CLASS_DEBUG:
 290                 return "debug";
 291         case MFI_EVT_CLASS_PROGRESS:
 292                 return "progress";
 293         case MFI_EVT_CLASS_INFO:
 294                 return "info";
 295         case MFI_EVT_CLASS_WARNING:
 296                 return "WARN";
 297         case MFI_EVT_CLASS_CRITICAL:
 298                 return "CRIT";
 299         case MFI_EVT_CLASS_FATAL:
 300                 return "FATAL";
 301         case MFI_EVT_CLASS_DEAD:
 302                 return "DEAD";
 303         default:
 304                 snprintf(buffer, sizeof(buffer), "%d", class);
 305                 return buffer;
 306         }
 307 }
 308
 309 /**
 310   * megasas_decode_evt: Decode FW AEN event and print critical event
 311   * for information.
 312   * @instance:                  Adapter soft state
 313   */
 314 static void
 315 megasas_decode_evt(struct megasas_instance *instance)
 316 {
 317         struct megasas_evt_detail *evt_detail = instance->evt_detail;
 318         union megasas_evt_class_locale class_locale;
 319         class_locale.word = le32_to_cpu(evt_detail->cl.word);
 320
 321         if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
 322                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
 323                         le32_to_cpu(evt_detail->seq_num),
 324                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
 325                         (class_locale.members.locale),
 326                         format_class(class_locale.members.class),
 327                         evt_detail->description);
 328 }
 329
 330 /**
 331 *       The following functions are defined for xscale
 332 *       (deviceid : 1064R, PERC5) controllers
 333 */
 334
 335 /**
 336  * megasas_enable_intr_xscale - Enables interrupts
 337  * @regs:                       MFI register set
 338  */
 339 static inline void
 340 megasas_enable_intr_xscale(struct megasas_instance *instance)
 341 {
 342         struct megasas_register_set __iomem *regs;
 343
 344         regs = instance->reg_set;
 345         writel(0, &(regs)->outbound_intr_mask);
 346
 347         /* Dummy readl to force pci flush */
 348         readl(&regs->outbound_intr_mask);
 349 }
 350
 351 /**
 352  * megasas_disable_intr_xscale -Disables interrupt
 353  * @regs:                       MFI register set
 354  */
 355 static inline void
 356 megasas_disable_intr_xscale(struct megasas_instance *instance)
 357 {
 358         struct megasas_register_set __iomem *regs;
 359         u32 mask = 0x1f;
 360
 361         regs = instance->reg_set;
 362         writel(mask, &regs->outbound_intr_mask);
 363         /* Dummy readl to force pci flush */
 364         readl(&regs->outbound_intr_mask);
 365 }
 366
 367 /**
 368  * megasas_read_fw_status_reg_xscale - returns the current FW status value
 369  * @regs:                       MFI register set
 370  */
 371 static u32
 372 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
 373 {
 374         return readl(&(regs)->outbound_msg_0);
 375 }
 376 /**
 377  * megasas_clear_interrupt_xscale -     Check & clear interrupt
 378  * @regs:                               MFI register set
 379  */
 380 static int
 381 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
 382 {
 383         u32 status;
 384         u32 mfiStatus = 0;
 385
 386         /*
 387          * Check if it is our interrupt
 388          */
 389         status = readl(&regs->outbound_intr_status);
 390
 391         if (status & MFI_OB_INTR_STATUS_MASK)
 392                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 393         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
 394                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 395
 396         /*
 397          * Clear the interrupt by writing back the same value
 398          */
 399         if (mfiStatus)
 400                 writel(status, &regs->outbound_intr_status);
 401
 402         /* Dummy readl to force pci flush */
 403         readl(&regs->outbound_intr_status);
 404
 405         return mfiStatus;
 406 }
 407
 408 /**
 409  * megasas_fire_cmd_xscale -    Sends command to the FW
 410  * @frame_phys_addr :           Physical address of cmd
 411  * @frame_count :               Number of frames for the command
 412  * @regs :                      MFI register set
 413  */
 414 static inline void
 415 megasas_fire_cmd_xscale(struct megasas_instance *instance,
 416                 dma_addr_t frame_phys_addr,
 417                 u32 frame_count,
 418                 struct megasas_register_set __iomem *regs)
 419 {
 420         unsigned long flags;
 421
 422         spin_lock_irqsave(&instance->hba_lock, flags);
 423         writel((frame_phys_addr >> 3)|(frame_count),
 424                &(regs)->inbound_queue_port);
 425         spin_unlock_irqrestore(&instance->hba_lock, flags);
 426 }
 427
 428 /**
 429  * megasas_adp_reset_xscale -  For controller reset
 430  * @regs:                              MFI register set
 431  */
 432 static int
 433 megasas_adp_reset_xscale(struct megasas_instance *instance,
 434         struct megasas_register_set __iomem *regs)
 435 {
 436         u32 i;
 437         u32 pcidata;
 438
 439         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
 440
 441         for (i = 0; i < 3; i++)
 442                 msleep(1000); /* sleep for 3 secs */
 443         pcidata  = 0;
 444         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
 445         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
 446         if (pcidata & 0x2) {
 447                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
 448                 pcidata &= ~0x2;
 449                 pci_write_config_dword(instance->pdev,
 450                                 MFI_1068_PCSR_OFFSET, pcidata);
 451
 452                 for (i = 0; i < 2; i++)
 453                         msleep(1000); /* need to wait 2 secs again */
 454
 455                 pcidata  = 0;
 456                 pci_read_config_dword(instance->pdev,
 457                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
 458                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
 459                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
 460                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
 461                         pcidata = 0;
 462                         pci_write_config_dword(instance->pdev,
 463                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
 464                 }
 465         }
 466         return 0;
 467 }
 468
 469 /**
 470  * megasas_check_reset_xscale - For controller reset check
 471  * @regs:                               MFI register set
 472  */
 473 static int
 474 megasas_check_reset_xscale(struct megasas_instance *instance,
 475                 struct megasas_register_set __iomem *regs)
 476 {
 477         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
 478             (le32_to_cpu(*instance->consumer) ==
 479                 MEGASAS_ADPRESET_INPROG_SIGN))
 480                 return 1;
 481         return 0;
 482 }
 483
 484 static struct megasas_instance_template megasas_instance_template_xscale = {
 485
 486         .fire_cmd = megasas_fire_cmd_xscale,
 487         .enable_intr = megasas_enable_intr_xscale,
 488         .disable_intr = megasas_disable_intr_xscale,
 489         .clear_intr = megasas_clear_intr_xscale,
 490         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 491         .adp_reset = megasas_adp_reset_xscale,
 492         .check_reset = megasas_check_reset_xscale,
 493         .service_isr = megasas_isr,
 494         .tasklet = megasas_complete_cmd_dpc,
 495         .init_adapter = megasas_init_adapter_mfi,
 496         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 497         .issue_dcmd = megasas_issue_dcmd,
 498 };
 499
 500 /**
 501 *       This is the end of set of functions & definitions specific
 502 *       to xscale (deviceid : 1064R, PERC5) controllers
 503 */
 504
 505 /**
 506 *       The following functions are defined for ppc (deviceid : 0x60)
 507 *       controllers
 508 */
 509
 510 /**
 511  * megasas_enable_intr_ppc -    Enables interrupts
 512  * @regs:                       MFI register set
 513  */
 514 static inline void
 515 megasas_enable_intr_ppc(struct megasas_instance *instance)
 516 {
 517         struct megasas_register_set __iomem *regs;
 518
 519         regs = instance->reg_set;
 520         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 521
 522         writel(~0x80000000, &(regs)->outbound_intr_mask);
 523
 524         /* Dummy readl to force pci flush */
 525         readl(&regs->outbound_intr_mask);
 526 }
 527
 528 /**
 529  * megasas_disable_intr_ppc -   Disable interrupt
 530  * @regs:                       MFI register set
 531  */
 532 static inline void
 533 megasas_disable_intr_ppc(struct megasas_instance *instance)
 534 {
 535         struct megasas_register_set __iomem *regs;
 536         u32 mask = 0xFFFFFFFF;
 537
 538         regs = instance->reg_set;
 539         writel(mask, &regs->outbound_intr_mask);
 540         /* Dummy readl to force pci flush */
 541         readl(&regs->outbound_intr_mask);
 542 }
 543
 544 /**
 545  * megasas_read_fw_status_reg_ppc - returns the current FW status value
 546  * @regs:                       MFI register set
 547  */
 548 static u32
 549 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
 550 {
 551         return readl(&(regs)->outbound_scratch_pad);
 552 }
 553
 554 /**
 555  * megasas_clear_interrupt_ppc -        Check & clear interrupt
 556  * @regs:                               MFI register set
 557  */
 558 static int
 559 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
 560 {
 561         u32 status, mfiStatus = 0;
 562
 563         /*
 564          * Check if it is our interrupt
 565          */
 566         status = readl(&regs->outbound_intr_status);
 567
 568         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
 569                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 570
 571         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
 572                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 573
 574         /*
 575          * Clear the interrupt by writing back the same value
 576          */
 577         writel(status, &regs->outbound_doorbell_clear);
 578
 579         /* Dummy readl to force pci flush */
 580         readl(&regs->outbound_doorbell_clear);
 581
 582         return mfiStatus;
 583 }
 584
 585 /**
 586  * megasas_fire_cmd_ppc -       Sends command to the FW
 587  * @frame_phys_addr :           Physical address of cmd
 588  * @frame_count :               Number of frames for the command
 589  * @regs :                      MFI register set
 590  */
 591 static inline void
 592 megasas_fire_cmd_ppc(struct megasas_instance *instance,
 593                 dma_addr_t frame_phys_addr,
 594                 u32 frame_count,
 595                 struct megasas_register_set __iomem *regs)
 596 {
 597         unsigned long flags;
 598
 599         spin_lock_irqsave(&instance->hba_lock, flags);
 600         writel((frame_phys_addr | (frame_count<<1))|1,
 601                         &(regs)->inbound_queue_port);
 602         spin_unlock_irqrestore(&instance->hba_lock, flags);
 603 }
 604
 605 /**
 606  * megasas_check_reset_ppc -    For controller reset check
 607  * @regs:                               MFI register set
 608  */
 609 static int
 610 megasas_check_reset_ppc(struct megasas_instance *instance,
 611                         struct megasas_register_set __iomem *regs)
 612 {
 613         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 614                 return 1;
 615
 616         return 0;
 617 }
 618
 619 static struct megasas_instance_template megasas_instance_template_ppc = {
 620
 621         .fire_cmd = megasas_fire_cmd_ppc,
 622         .enable_intr = megasas_enable_intr_ppc,
 623         .disable_intr = megasas_disable_intr_ppc,
 624         .clear_intr = megasas_clear_intr_ppc,
 625         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 626         .adp_reset = megasas_adp_reset_xscale,
 627         .check_reset = megasas_check_reset_ppc,
 628         .service_isr = megasas_isr,
 629         .tasklet = megasas_complete_cmd_dpc,
 630         .init_adapter = megasas_init_adapter_mfi,
 631         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 632         .issue_dcmd = megasas_issue_dcmd,
 633 };
 634
 635 /**
 636  * megasas_enable_intr_skinny - Enables interrupts
 637  * @regs:                       MFI register set
 638  */
 639 static inline void
 640 megasas_enable_intr_skinny(struct megasas_instance *instance)
 641 {
 642         struct megasas_register_set __iomem *regs;
 643
 644         regs = instance->reg_set;
 645         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
 646
 647         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 648
 649         /* Dummy readl to force pci flush */
 650         readl(&regs->outbound_intr_mask);
 651 }
 652
 653 /**
 654  * megasas_disable_intr_skinny -        Disables interrupt
 655  * @regs:                       MFI register set
 656  */
 657 static inline void
 658 megasas_disable_intr_skinny(struct megasas_instance *instance)
 659 {
 660         struct megasas_register_set __iomem *regs;
 661         u32 mask = 0xFFFFFFFF;
 662
 663         regs = instance->reg_set;
 664         writel(mask, &regs->outbound_intr_mask);
 665         /* Dummy readl to force pci flush */
 666         readl(&regs->outbound_intr_mask);
 667 }
 668
 669 /**
 670  * megasas_read_fw_status_reg_skinny - returns the current FW status value
 671  * @regs:                       MFI register set
 672  */
 673 static u32
 674 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
 675 {
 676         return readl(&(regs)->outbound_scratch_pad);
 677 }
 678
 679 /**
 680  * megasas_clear_interrupt_skinny -     Check & clear interrupt
 681  * @regs:                               MFI register set
 682  */
 683 static int
 684 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
 685 {
 686         u32 status;
 687         u32 mfiStatus = 0;
 688
 689         /*
 690          * Check if it is our interrupt
 691          */
 692         status = readl(&regs->outbound_intr_status);
 693
 694         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
 695                 return 0;
 696         }
 697
 698         /*
 699          * Check if it is our interrupt
 700          */
 701         if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
 702             MFI_STATE_FAULT) {
 703                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 704         } else
 705                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 706
 707         /*
 708          * Clear the interrupt by writing back the same value
 709          */
 710         writel(status, &regs->outbound_intr_status);
 711
 712         /*
 713          * dummy read to flush PCI
 714          */
 715         readl(&regs->outbound_intr_status);
 716
 717         return mfiStatus;
 718 }
 719
 720 /**
 721  * megasas_fire_cmd_skinny -    Sends command to the FW
 722  * @frame_phys_addr :           Physical address of cmd
 723  * @frame_count :               Number of frames for the command
 724  * @regs :                      MFI register set
 725  */
 726 static inline void
 727 megasas_fire_cmd_skinny(struct megasas_instance *instance,
 728                         dma_addr_t frame_phys_addr,
 729                         u32 frame_count,
 730                         struct megasas_register_set __iomem *regs)
 731 {
 732         unsigned long flags;
 733
 734         spin_lock_irqsave(&instance->hba_lock, flags);
 735         writel(upper_32_bits(frame_phys_addr),
 736                &(regs)->inbound_high_queue_port);
 737         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
 738                &(regs)->inbound_low_queue_port);
 739         mmiowb();
 740         spin_unlock_irqrestore(&instance->hba_lock, flags);
 741 }
 742
 743 /**
 744  * megasas_check_reset_skinny - For controller reset check
 745  * @regs:                               MFI register set
 746  */
 747 static int
 748 megasas_check_reset_skinny(struct megasas_instance *instance,
 749                                 struct megasas_register_set __iomem *regs)
 750 {
 751         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 752                 return 1;
 753
 754         return 0;
 755 }
 756
 757 static struct megasas_instance_template megasas_instance_template_skinny = {
 758
 759         .fire_cmd = megasas_fire_cmd_skinny,
 760         .enable_intr = megasas_enable_intr_skinny,
 761         .disable_intr = megasas_disable_intr_skinny,
 762         .clear_intr = megasas_clear_intr_skinny,
 763         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
 764         .adp_reset = megasas_adp_reset_gen2,
 765         .check_reset = megasas_check_reset_skinny,
 766         .service_isr = megasas_isr,
 767         .tasklet = megasas_complete_cmd_dpc,
 768         .init_adapter = megasas_init_adapter_mfi,
 769         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 770         .issue_dcmd = megasas_issue_dcmd,
 771 };
 772
 773
 774 /**
 775 *       The following functions are defined for gen2 (deviceid : 0x78 0x79)
 776 *       controllers
 777 */
 778
 779 /**
 780  * megasas_enable_intr_gen2 -  Enables interrupts
 781  * @regs:                      MFI register set
 782  */
 783 static inline void
 784 megasas_enable_intr_gen2(struct megasas_instance *instance)
 785 {
 786         struct megasas_register_set __iomem *regs;
 787
 788         regs = instance->reg_set;
 789         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 790
 791         /* write ~0x00000005 (4 & 1) to the intr mask*/
 792         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 793
 794         /* Dummy readl to force pci flush */
 795         readl(&regs->outbound_intr_mask);
 796 }
 797
 798 /**
 799  * megasas_disable_intr_gen2 - Disables interrupt
 800  * @regs:                      MFI register set
 801  */
 802 static inline void
 803 megasas_disable_intr_gen2(struct megasas_instance *instance)
 804 {
 805         struct megasas_register_set __iomem *regs;
 806         u32 mask = 0xFFFFFFFF;
 807
 808         regs = instance->reg_set;
 809         writel(mask, &regs->outbound_intr_mask);
 810         /* Dummy readl to force pci flush */
 811         readl(&regs->outbound_intr_mask);
 812 }
 813
 814 /**
 815  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 816  * @regs:                      MFI register set
 817  */
 818 static u32
 819 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
 820 {
 821         return readl(&(regs)->outbound_scratch_pad);
 822 }
 823
 824 /**
 825  * megasas_clear_interrupt_gen2 -      Check & clear interrupt
 826  * @regs:                              MFI register set
 827  */
 828 static int
 829 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
 830 {
 831         u32 status;
 832         u32 mfiStatus = 0;
 833
 834         /*
 835          * Check if it is our interrupt
 836          */
 837         status = readl(&regs->outbound_intr_status);
 838
 839         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
 840                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 841         }
 842         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
 843                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 844         }
 845
 846         /*
 847          * Clear the interrupt by writing back the same value
 848          */
 849         if (mfiStatus)
 850                 writel(status, &regs->outbound_doorbell_clear);
 851
 852         /* Dummy readl to force pci flush */
 853         readl(&regs->outbound_intr_status);
 854
 855         return mfiStatus;
 856 }
 857 /**
 858  * megasas_fire_cmd_gen2 -     Sends command to the FW
 859  * @frame_phys_addr :          Physical address of cmd
 860  * @frame_count :              Number of frames for the command
 861  * @regs :                     MFI register set
 862  */
 863 static inline void
 864 megasas_fire_cmd_gen2(struct megasas_instance *instance,
 865                         dma_addr_t frame_phys_addr,
 866                         u32 frame_count,
 867                         struct megasas_register_set __iomem *regs)
 868 {
 869         unsigned long flags;
 870
 871         spin_lock_irqsave(&instance->hba_lock, flags);
 872         writel((frame_phys_addr | (frame_count<<1))|1,
 873                         &(regs)->inbound_queue_port);
 874         spin_unlock_irqrestore(&instance->hba_lock, flags);
 875 }
 876
 877 /**
 878  * megasas_adp_reset_gen2 -     For controller reset
 879  * @regs:                               MFI register set
 880  */
 881 static int
 882 megasas_adp_reset_gen2(struct megasas_instance *instance,
 883                         struct megasas_register_set __iomem *reg_set)
 884 {
 885         u32 retry = 0 ;
 886         u32 HostDiag;
 887         u32 __iomem *seq_offset = &reg_set->seq_offset;
 888         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
 889
 890         if (instance->instancet == &megasas_instance_template_skinny) {
 891                 seq_offset = &reg_set->fusion_seq_offset;
 892                 hostdiag_offset = &reg_set->fusion_host_diag;
 893         }
 894
 895         writel(0, seq_offset);
 896         writel(4, seq_offset);
 897         writel(0xb, seq_offset);
 898         writel(2, seq_offset);
 899         writel(7, seq_offset);
 900         writel(0xd, seq_offset);
 901
 902         msleep(1000);
 903
 904         HostDiag = (u32)readl(hostdiag_offset);
 905
 906         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
 907                 msleep(100);
 908                 HostDiag = (u32)readl(hostdiag_offset);
 909                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
 910                                         retry, HostDiag);
 911
 912                 if (retry++ >= 100)
 913                         return 1;
 914
 915         }
 916
 917         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
 918
 919         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
 920
 921         ssleep(10);
 922
 923         HostDiag = (u32)readl(hostdiag_offset);
 924         while (HostDiag & DIAG_RESET_ADAPTER) {
 925                 msleep(100);
 926                 HostDiag = (u32)readl(hostdiag_offset);
 927                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
 928                                 retry, HostDiag);
 929
 930                 if (retry++ >= 1000)
 931                         return 1;
 932
 933         }
 934         return 0;
 935 }
 936
 937 /**
 938  * megasas_check_reset_gen2 -   For controller reset check
 939  * @regs:                               MFI register set
 940  */
 941 static int
 942 megasas_check_reset_gen2(struct megasas_instance *instance,
 943                 struct megasas_register_set __iomem *regs)
 944 {
 945         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 946                 return 1;
 947
 948         return 0;
 949 }
 950
 951 static struct megasas_instance_template megasas_instance_template_gen2 = {
 952
 953         .fire_cmd = megasas_fire_cmd_gen2,
 954         .enable_intr = megasas_enable_intr_gen2,
 955         .disable_intr = megasas_disable_intr_gen2,
 956         .clear_intr = megasas_clear_intr_gen2,
 957         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
 958         .adp_reset = megasas_adp_reset_gen2,
 959         .check_reset = megasas_check_reset_gen2,
 960         .service_isr = megasas_isr,
 961         .tasklet = megasas_complete_cmd_dpc,
 962         .init_adapter = megasas_init_adapter_mfi,
 963         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 964         .issue_dcmd = megasas_issue_dcmd,
 965 };
 966
 967 /**
 968 *       This is the end of set of functions & definitions
 969 *       specific to gen2 (deviceid : 0x78, 0x79) controllers
 970 */
 971
 972 /*
 973  * Template added for TB (Fusion)
 974  */
 975 extern struct megasas_instance_template megasas_instance_template_fusion;
 976
 977 /**
 978  * megasas_issue_polled -       Issues a polling command
 979  * @instance:                   Adapter soft state
 980  * @cmd:                        Command packet to be issued
 981  *
 982  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
 983  */
 984 int
 985 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
 986 {
 987         struct megasas_header *frame_hdr = &cmd->frame->hdr;
 988
 989         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
 990         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
 991
 992         if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
 993                 (instance->instancet->issue_dcmd(instance, cmd))) {
 994                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
 995                         __func__, __LINE__);
 996                 return DCMD_NOT_FIRED;
 997         }
 998
 999         return wait_and_poll(instance, cmd, instance->requestorId ?
1000                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1001 }
1002
1003 /**
1004  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1005  * @instance:                   Adapter soft state
1006  * @cmd:                        Command to be issued
1007  * @timeout:                    Timeout in seconds
1008  *
1009  * This function waits on an event for the command to be returned from ISR.
1010  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1011  * Used to issue ioctl commands.
1012  */
1013 int
1014 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1015                           struct megasas_cmd *cmd, int timeout)
1016 {
1017         int ret = 0;
1018         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1019
1020         if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1021                 (instance->instancet->issue_dcmd(instance, cmd))) {
1022                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1023                         __func__, __LINE__);
1024                 return DCMD_NOT_FIRED;
1025         }
1026
1027         if (timeout) {
1028                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1029                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1030                 if (!ret) {
1031                         dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
1032                                 __func__, __LINE__);
1033                         return DCMD_TIMEOUT;
1034                 }
1035         } else
1036                 wait_event(instance->int_cmd_wait_q,
1037                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1038
1039         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1040                 DCMD_SUCCESS : DCMD_FAILED;
1041 }
1042
1043 /**
1044  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1045  * @instance:                           Adapter soft state
1046  * @cmd_to_abort:                       Previously issued cmd to be aborted
1047  * @timeout:                            Timeout in seconds
1048  *
1049  * MFI firmware can abort previously issued AEN comamnd (automatic event
1050  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1051  * cmd and waits for return status.
1052  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1053  */
1054 static int
1055 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1056                                 struct megasas_cmd *cmd_to_abort, int timeout)
1057 {
1058         struct megasas_cmd *cmd;
1059         struct megasas_abort_frame *abort_fr;
1060         int ret = 0;
1061
1062         cmd = megasas_get_cmd(instance);
1063
1064         if (!cmd)
1065                 return -1;
1066
1067         abort_fr = &cmd->frame->abort;
1068
1069         /*
1070          * Prepare and issue the abort frame
1071          */
1072         abort_fr->cmd = MFI_CMD_ABORT;
1073         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1074         abort_fr->flags = cpu_to_le16(0);
1075         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1076         abort_fr->abort_mfi_phys_addr_lo =
1077                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1078         abort_fr->abort_mfi_phys_addr_hi =
1079                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1080
1081         cmd->sync_cmd = 1;
1082         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1083
1084         if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1085                 (instance->instancet->issue_dcmd(instance, cmd))) {
1086                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1087                         __func__, __LINE__);
1088                 return DCMD_NOT_FIRED;
1089         }
1090
1091         if (timeout) {
1092                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1093                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1094                 if (!ret) {
1095                         dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
1096                                 __func__, __LINE__);
1097                         return DCMD_TIMEOUT;
1098                 }
1099         } else
1100                 wait_event(instance->abort_cmd_wait_q,
1101                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1102
1103         cmd->sync_cmd = 0;
1104
1105         megasas_return_cmd(instance, cmd);
1106         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1107                 DCMD_SUCCESS : DCMD_FAILED;
1108 }
1109
1110 /**
1111  * megasas_make_sgl32 - Prepares 32-bit SGL
1112  * @instance:           Adapter soft state
1113  * @scp:                SCSI command from the mid-layer
1114  * @mfi_sgl:            SGL to be filled in
1115  *
1116  * If successful, this function returns the number of SG elements. Otherwise,
1117  * it returnes -1.
1118  */
1119 static int
1120 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1121                    union megasas_sgl *mfi_sgl)
1122 {
1123         int i;
1124         int sge_count;
1125         struct scatterlist *os_sgl;
1126
1127         sge_count = scsi_dma_map(scp);
1128         BUG_ON(sge_count < 0);
1129
1130         if (sge_count) {
1131                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1132                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1133                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1134                 }
1135         }
1136         return sge_count;
1137 }
1138
1139 /**
1140  * megasas_make_sgl64 - Prepares 64-bit SGL
1141  * @instance:           Adapter soft state
1142  * @scp:                SCSI command from the mid-layer
1143  * @mfi_sgl:            SGL to be filled in
1144  *
1145  * If successful, this function returns the number of SG elements. Otherwise,
1146  * it returnes -1.
1147  */
1148 static int
1149 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1150                    union megasas_sgl *mfi_sgl)
1151 {
1152         int i;
1153         int sge_count;
1154         struct scatterlist *os_sgl;
1155
1156         sge_count = scsi_dma_map(scp);
1157         BUG_ON(sge_count < 0);
1158
1159         if (sge_count) {
1160                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1161                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1162                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1163                 }
1164         }
1165         return sge_count;
1166 }
1167
1168 /**
1169  * megasas_make_sgl_skinny - Prepares IEEE SGL
1170  * @instance:           Adapter soft state
1171  * @scp:                SCSI command from the mid-layer
1172  * @mfi_sgl:            SGL to be filled in
1173  *
1174  * If successful, this function returns the number of SG elements. Otherwise,
1175  * it returnes -1.
1176  */
1177 static int
1178 megasas_make_sgl_skinny(struct megasas_instance *instance,
1179                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1180 {
1181         int i;
1182         int sge_count;
1183         struct scatterlist *os_sgl;
1184
1185         sge_count = scsi_dma_map(scp);
1186
1187         if (sge_count) {
1188                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1189                         mfi_sgl->sge_skinny[i].length =
1190                                 cpu_to_le32(sg_dma_len(os_sgl));
1191                         mfi_sgl->sge_skinny[i].phys_addr =
1192                                 cpu_to_le64(sg_dma_address(os_sgl));
1193                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1194                 }
1195         }
1196         return sge_count;
1197 }
1198
1199  /**
1200  * megasas_get_frame_count - Computes the number of frames
1201  * @frame_type          : type of frame- io or pthru frame
1202  * @sge_count           : number of sg elements
1203  *
1204  * Returns the number of frames required for numnber of sge's (sge_count)
1205  */
1206
1207 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1208                         u8 sge_count, u8 frame_type)
1209 {
1210         int num_cnt;
1211         int sge_bytes;
1212         u32 sge_sz;
1213         u32 frame_count = 0;
1214
1215         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1216             sizeof(struct megasas_sge32);
1217
1218         if (instance->flag_ieee) {
1219                 sge_sz = sizeof(struct megasas_sge_skinny);
1220         }
1221
1222         /*
1223          * Main frame can contain 2 SGEs for 64-bit SGLs and
1224          * 3 SGEs for 32-bit SGLs for ldio &
1225          * 1 SGEs for 64-bit SGLs and
1226          * 2 SGEs for 32-bit SGLs for pthru frame
1227          */
1228         if (unlikely(frame_type == PTHRU_FRAME)) {
1229                 if (instance->flag_ieee == 1) {
1230                         num_cnt = sge_count - 1;
1231                 } else if (IS_DMA64)
1232                         num_cnt = sge_count - 1;
1233                 else
1234                         num_cnt = sge_count - 2;
1235         } else {
1236                 if (instance->flag_ieee == 1) {
1237                         num_cnt = sge_count - 1;
1238                 } else if (IS_DMA64)
1239                         num_cnt = sge_count - 2;
1240                 else
1241                         num_cnt = sge_count - 3;
1242         }
1243
1244         if (num_cnt > 0) {
1245                 sge_bytes = sge_sz * num_cnt;
1246
1247                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1248                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1249         }
1250         /* Main frame */
1251         frame_count += 1;
1252
1253         if (frame_count > 7)
1254                 frame_count = 8;
1255         return frame_count;
1256 }
1257
1258 /**
1259  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1260  * @instance:           Adapter soft state
1261  * @scp:                SCSI command
1262  * @cmd:                Command to be prepared in
1263  *
1264  * This function prepares CDB commands. These are typcially pass-through
1265  * commands to the devices.
1266  */
1267 static int
1268 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1269                    struct megasas_cmd *cmd)
1270 {
1271         u32 is_logical;
1272         u32 device_id;
1273         u16 flags = 0;
1274         struct megasas_pthru_frame *pthru;
1275
1276         is_logical = MEGASAS_IS_LOGICAL(scp);
1277         device_id = MEGASAS_DEV_INDEX(scp);
1278         pthru = (struct megasas_pthru_frame *)cmd->frame;
1279
1280         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1281                 flags = MFI_FRAME_DIR_WRITE;
1282         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1283                 flags = MFI_FRAME_DIR_READ;
1284         else if (scp->sc_data_direction == PCI_DMA_NONE)
1285                 flags = MFI_FRAME_DIR_NONE;
1286
1287         if (instance->flag_ieee == 1) {
1288                 flags |= MFI_FRAME_IEEE;
1289         }
1290
1291         /*
1292          * Prepare the DCDB frame
1293          */
1294         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1295         pthru->cmd_status = 0x0;
1296         pthru->scsi_status = 0x0;
1297         pthru->target_id = device_id;
1298         pthru->lun = scp->device->lun;
1299         pthru->cdb_len = scp->cmd_len;
1300         pthru->timeout = 0;
1301         pthru->pad_0 = 0;
1302         pthru->flags = cpu_to_le16(flags);
1303         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1304
1305         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1306
1307         /*
1308          * If the command is for the tape device, set the
1309          * pthru timeout to the os layer timeout value.
1310          */
1311         if (scp->device->type == TYPE_TAPE) {
1312                 if ((scp->request->timeout / HZ) > 0xFFFF)
1313                         pthru->timeout = cpu_to_le16(0xFFFF);
1314                 else
1315                         pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1316         }
1317
1318         /*
1319          * Construct SGL
1320          */
1321         if (instance->flag_ieee == 1) {
1322                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1323                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1324                                                       &pthru->sgl);
1325         } else if (IS_DMA64) {
1326                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1327                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1328                                                       &pthru->sgl);
1329         } else
1330                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1331                                                       &pthru->sgl);
1332
1333         if (pthru->sge_count > instance->max_num_sge) {
1334                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1335                         pthru->sge_count);
1336                 return 0;
1337         }
1338
1339         /*
1340          * Sense info specific
1341          */
1342         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1343         pthru->sense_buf_phys_addr_hi =
1344                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1345         pthru->sense_buf_phys_addr_lo =
1346                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1347
1348         /*
1349          * Compute the total number of frames this command consumes. FW uses
1350          * this number to pull sufficient number of frames from host memory.
1351          */
1352         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1353                                                         PTHRU_FRAME);
1354
1355         return cmd->frame_count;
1356 }
1357
1358 /**
1359  * megasas_build_ldio - Prepares IOs to logical devices
1360  * @instance:           Adapter soft state
1361  * @scp:                SCSI command
1362  * @cmd:                Command to be prepared
1363  *
1364  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1365  */
1366 static int
1367 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1368                    struct megasas_cmd *cmd)
1369 {
1370         u32 device_id;
1371         u8 sc = scp->cmnd[0];
1372         u16 flags = 0;
1373         struct megasas_io_frame *ldio;
1374
1375         device_id = MEGASAS_DEV_INDEX(scp);
1376         ldio = (struct megasas_io_frame *)cmd->frame;
1377
1378         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1379                 flags = MFI_FRAME_DIR_WRITE;
1380         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1381                 flags = MFI_FRAME_DIR_READ;
1382
1383         if (instance->flag_ieee == 1) {
1384                 flags |= MFI_FRAME_IEEE;
1385         }
1386
1387         /*
1388          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1389          */
1390         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1391         ldio->cmd_status = 0x0;
1392         ldio->scsi_status = 0x0;
1393         ldio->target_id = device_id;
1394         ldio->timeout = 0;
1395         ldio->reserved_0 = 0;
1396         ldio->pad_0 = 0;
1397         ldio->flags = cpu_to_le16(flags);
1398         ldio->start_lba_hi = 0;
1399         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1400
1401         /*
1402          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1403          */
1404         if (scp->cmd_len == 6) {
1405                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1406                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1407                                                  ((u32) scp->cmnd[2] << 8) |
1408                                                  (u32) scp->cmnd[3]);
1409
1410                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1411         }
1412
1413         /*
1414          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1415          */
1416         else if (scp->cmd_len == 10) {
1417                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1418                                               ((u32) scp->cmnd[7] << 8));
1419                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1420                                                  ((u32) scp->cmnd[3] << 16) |
1421                                                  ((u32) scp->cmnd[4] << 8) |
1422                                                  (u32) scp->cmnd[5]);
1423         }
1424
1425         /*
1426          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1427          */
1428         else if (scp->cmd_len == 12) {
1429                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1430                                               ((u32) scp->cmnd[7] << 16) |
1431                                               ((u32) scp->cmnd[8] << 8) |
1432                                               (u32) scp->cmnd[9]);
1433
1434                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1435                                                  ((u32) scp->cmnd[3] << 16) |
1436                                                  ((u32) scp->cmnd[4] << 8) |
1437                                                  (u32) scp->cmnd[5]);
1438         }
1439
1440         /*
1441          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1442          */
1443         else if (scp->cmd_len == 16) {
1444                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1445                                               ((u32) scp->cmnd[11] << 16) |
1446                                               ((u32) scp->cmnd[12] << 8) |
1447                                               (u32) scp->cmnd[13]);
1448
1449                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1450                                                  ((u32) scp->cmnd[7] << 16) |
1451                                                  ((u32) scp->cmnd[8] << 8) |
1452                                                  (u32) scp->cmnd[9]);
1453
1454                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1455                                                  ((u32) scp->cmnd[3] << 16) |
1456                                                  ((u32) scp->cmnd[4] << 8) |
1457                                                  (u32) scp->cmnd[5]);
1458
1459         }
1460
1461         /*
1462          * Construct SGL
1463          */
1464         if (instance->flag_ieee) {
1465                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1466                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1467                                               &ldio->sgl);
1468         } else if (IS_DMA64) {
1469                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1470                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1471         } else
1472                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1473
1474         if (ldio->sge_count > instance->max_num_sge) {
1475                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1476                         ldio->sge_count);
1477                 return 0;
1478         }
1479
1480         /*
1481          * Sense info specific
1482          */
1483         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1484         ldio->sense_buf_phys_addr_hi = 0;
1485         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1486
1487         /*
1488          * Compute the total number of frames this command consumes. FW uses
1489          * this number to pull sufficient number of frames from host memory.
1490          */
1491         cmd->frame_count = megasas_get_frame_count(instance,
1492                         ldio->sge_count, IO_FRAME);
1493
1494         return cmd->frame_count;
1495 }
1496
1497 /**
1498  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1499  *                              and whether it's RW or non RW
1500  * @scmd:                       SCSI command
1501  *
1502  */
1503 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1504 {
1505         int ret;
1506
1507         switch (cmd->cmnd[0]) {
1508         case READ_10:
1509         case WRITE_10:
1510         case READ_12:
1511         case WRITE_12:
1512         case READ_6:
1513         case WRITE_6:
1514         case READ_16:
1515         case WRITE_16:
1516                 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1517                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1518                 break;
1519         default:
1520                 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1521                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1522         }
1523         return ret;
1524 }
1525
1526  /**
1527  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1528  *                                      in FW
1529  * @instance:                           Adapter soft state
1530  */
1531 static inline void
1532 megasas_dump_pending_frames(struct megasas_instance *instance)
1533 {
1534         struct megasas_cmd *cmd;
1535         int i,n;
1536         union megasas_sgl *mfi_sgl;
1537         struct megasas_io_frame *ldio;
1538         struct megasas_pthru_frame *pthru;
1539         u32 sgcount;
1540         u32 max_cmd = instance->max_fw_cmds;
1541
1542         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1543         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1544         if (IS_DMA64)
1545                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1546         else
1547                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1548
1549         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1550         for (i = 0; i < max_cmd; i++) {
1551                 cmd = instance->cmd_list[i];
1552                 if (!cmd->scmd)
1553                         continue;
1554                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1555                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1556                         ldio = (struct megasas_io_frame *)cmd->frame;
1557                         mfi_sgl = &ldio->sgl;
1558                         sgcount = ldio->sge_count;
1559                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1560                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1561                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1562                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1563                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1564                 } else {
1565                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1566                         mfi_sgl = &pthru->sgl;
1567                         sgcount = pthru->sge_count;
1568                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1569                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1570                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1571                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1572                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1573                 }
1574                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1575                         for (n = 0; n < sgcount; n++) {
1576                                 if (IS_DMA64)
1577                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1578                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1579                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1580                                 else
1581                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1582                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1583                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1584                         }
1585                 }
1586         } /*for max_cmd*/
1587         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1588         for (i = 0; i < max_cmd; i++) {
1589
1590                 cmd = instance->cmd_list[i];
1591
1592                 if (cmd->sync_cmd == 1)
1593                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1594         }
1595         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1596 }
1597
1598 u32
1599 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1600                             struct scsi_cmnd *scmd)
1601 {
1602         struct megasas_cmd *cmd;
1603         u32 frame_count;
1604
1605         cmd = megasas_get_cmd(instance);
1606         if (!cmd)
1607                 return SCSI_MLQUEUE_HOST_BUSY;
1608
1609         /*
1610          * Logical drive command
1611          */
1612         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1613                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1614         else
1615                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1616
1617         if (!frame_count)
1618                 goto out_return_cmd;
1619
1620         cmd->scmd = scmd;
1621         scmd->SCp.ptr = (char *)cmd;
1622
1623         /*
1624          * Issue the command to the FW
1625          */
1626         atomic_inc(&instance->fw_outstanding);
1627
1628         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1629                                 cmd->frame_count-1, instance->reg_set);
1630
1631         return 0;
1632 out_return_cmd:
1633         megasas_return_cmd(instance, cmd);
1634         return SCSI_MLQUEUE_HOST_BUSY;
1635 }
1636
1637
1638 /**
1639  * megasas_queue_command -      Queue entry point
1640  * @scmd:                       SCSI command to be queued
1641  * @done:                       Callback entry point
1642  */
1643 static int
1644 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1645 {
1646         struct megasas_instance *instance;
1647         struct MR_PRIV_DEVICE *mr_device_priv_data;
1648
1649         instance = (struct megasas_instance *)
1650             scmd->device->host->hostdata;
1651
1652         if (instance->unload == 1) {
1653                 scmd->result = DID_NO_CONNECT << 16;
1654                 scmd->scsi_done(scmd);
1655                 return 0;
1656         }
1657
1658         if (instance->issuepend_done == 0)
1659                 return SCSI_MLQUEUE_HOST_BUSY;
1660
1661
1662         /* Check for an mpio path and adjust behavior */
1663         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1664                 if (megasas_check_mpio_paths(instance, scmd) ==
1665                     (DID_RESET << 16)) {
1666                         return SCSI_MLQUEUE_HOST_BUSY;
1667                 } else {
1668                         scmd->result = DID_NO_CONNECT << 16;
1669                         scmd->scsi_done(scmd);
1670                         return 0;
1671                 }
1672         }
1673
1674         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1675                 scmd->result = DID_NO_CONNECT << 16;
1676                 scmd->scsi_done(scmd);
1677                 return 0;
1678         }
1679
1680         mr_device_priv_data = scmd->device->hostdata;
1681         if (!mr_device_priv_data) {
1682                 scmd->result = DID_NO_CONNECT << 16;
1683                 scmd->scsi_done(scmd);
1684                 return 0;
1685         }
1686
1687         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1688                 return SCSI_MLQUEUE_HOST_BUSY;
1689
1690         if (mr_device_priv_data->tm_busy)
1691                 return SCSI_MLQUEUE_DEVICE_BUSY;
1692
1693
1694         scmd->result = 0;
1695
1696         if (MEGASAS_IS_LOGICAL(scmd) &&
1697             (scmd->device->id >= instance->fw_supported_vd_count ||
1698                 scmd->device->lun)) {
1699                 scmd->result = DID_BAD_TARGET << 16;
1700                 goto out_done;
1701         }
1702
1703         switch (scmd->cmnd[0]) {
1704         case SYNCHRONIZE_CACHE:
1705                 /*
1706                  * FW takes care of flush cache on its own
1707                  * No need to send it down
1708                  */
1709                 scmd->result = DID_OK << 16;
1710                 goto out_done;
1711         default:
1712                 break;
1713         }
1714
1715         return instance->instancet->build_and_issue_cmd(instance, scmd);
1716
1717  out_done:
1718         scmd->scsi_done(scmd);
1719         return 0;
1720 }
1721
1722 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1723 {
1724         int i;
1725
1726         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1727
1728                 if ((megasas_mgmt_info.instance[i]) &&
1729                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1730                         return megasas_mgmt_info.instance[i];
1731         }
1732
1733         return NULL;
1734 }
1735
1736 /*
1737 * megasas_update_sdev_properties - Update sdev structure based on controller's FW capabilities
1738 *
1739 * @sdev: OS provided scsi device
1740 *
1741 * Returns void
1742 */
1743 void megasas_update_sdev_properties(struct scsi_device *sdev)
1744 {
1745         u16 pd_index = 0;
1746         u32 device_id, ld;
1747         struct megasas_instance *instance;
1748         struct fusion_context *fusion;
1749         struct MR_PRIV_DEVICE *mr_device_priv_data;
1750         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1751         struct MR_LD_RAID *raid;
1752         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1753
1754         instance = megasas_lookup_instance(sdev->host->host_no);
1755         fusion = instance->ctrl_context;
1756         mr_device_priv_data = sdev->hostdata;
1757
1758         if (!fusion)
1759                 return;
1760
1761         if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1762                 instance->use_seqnum_jbod_fp) {
1763                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1764                         sdev->id;
1765                 pd_sync = (void *)fusion->pd_seq_sync
1766                                 [(instance->pd_seq_map_id - 1) & 1];
1767                 mr_device_priv_data->is_tm_capable =
1768                         pd_sync->seq[pd_index].capability.tmCapable;
1769         } else {
1770                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1771                                         + sdev->id;
1772                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1773                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1774                 raid = MR_LdRaidGet(ld, local_map_ptr);
1775
1776                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1777                 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1778                 mr_device_priv_data->is_tm_capable =
1779                         raid->capability.tmCapable;
1780         }
1781 }
1782
1783 static void megasas_set_device_queue_depth(struct scsi_device *sdev)
1784 {
1785         u16                             pd_index = 0;
1786         int             ret = DCMD_FAILED;
1787         struct megasas_instance *instance;
1788
1789         instance = megasas_lookup_instance(sdev->host->host_no);
1790
1791         if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1792                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
1793
1794                 if (instance->pd_info) {
1795                         mutex_lock(&instance->hba_mutex);
1796                         ret = megasas_get_pd_info(instance, pd_index);
1797                         mutex_unlock(&instance->hba_mutex);
1798                 }
1799
1800                 if (ret != DCMD_SUCCESS)
1801                         return;
1802
1803                 if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
1804
1805                         switch (instance->pd_list[pd_index].interface) {
1806                         case SAS_PD:
1807                                 scsi_change_queue_depth(sdev, MEGASAS_SAS_QD);
1808                                 break;
1809
1810                         case SATA_PD:
1811                                 scsi_change_queue_depth(sdev, MEGASAS_SATA_QD);
1812                                 break;
1813
1814                         default:
1815                                 scsi_change_queue_depth(sdev, MEGASAS_DEFAULT_PD_QD);
1816                         }
1817                 }
1818         }
1819 }
1820
1821
1822 static int megasas_slave_configure(struct scsi_device *sdev)
1823 {
1824         u16 pd_index = 0;
1825         struct megasas_instance *instance;
1826
1827         instance = megasas_lookup_instance(sdev->host->host_no);
1828         if (instance->pd_list_not_supported) {
1829                 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1830                         sdev->type == TYPE_DISK) {
1831                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1832                                 sdev->id;
1833                         if (instance->pd_list[pd_index].driveState !=
1834                                 MR_PD_STATE_SYSTEM)
1835                                 return -ENXIO;
1836                 }
1837         }
1838         megasas_set_device_queue_depth(sdev);
1839         megasas_update_sdev_properties(sdev);
1840
1841         /*
1842          * The RAID firmware may require extended timeouts.
1843          */
1844         blk_queue_rq_timeout(sdev->request_queue,
1845                 scmd_timeout * HZ);
1846
1847         return 0;
1848 }
1849
1850 static int megasas_slave_alloc(struct scsi_device *sdev)
1851 {
1852         u16 pd_index = 0;
1853         struct megasas_instance *instance ;
1854         struct MR_PRIV_DEVICE *mr_device_priv_data;
1855
1856         instance = megasas_lookup_instance(sdev->host->host_no);
1857         if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1858                 /*
1859                  * Open the OS scan to the SYSTEM PD
1860                  */
1861                 pd_index =
1862                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1863                         sdev->id;
1864                 if ((instance->pd_list_not_supported ||
1865                         instance->pd_list[pd_index].driveState ==
1866                         MR_PD_STATE_SYSTEM)) {
1867                         goto scan_target;
1868                 }
1869                 return -ENXIO;
1870         }
1871
1872 scan_target:
1873         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
1874                                         GFP_KERNEL);
1875         if (!mr_device_priv_data)
1876                 return -ENOMEM;
1877         sdev->hostdata = mr_device_priv_data;
1878         return 0;
1879 }
1880
1881 static void megasas_slave_destroy(struct scsi_device *sdev)
1882 {
1883         kfree(sdev->hostdata);
1884         sdev->hostdata = NULL;
1885 }
1886
1887 /*
1888 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
1889 *                                       kill adapter
1890 * @instance:                            Adapter soft state
1891 *
1892 */
1893 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1894 {
1895         int i;
1896         struct megasas_cmd *cmd_mfi;
1897         struct megasas_cmd_fusion *cmd_fusion;
1898         struct fusion_context *fusion = instance->ctrl_context;
1899
1900         /* Find all outstanding ioctls */
1901         if (fusion) {
1902                 for (i = 0; i < instance->max_fw_cmds; i++) {
1903                         cmd_fusion = fusion->cmd_list[i];
1904                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
1905                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1906                                 if (cmd_mfi->sync_cmd &&
1907                                         cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
1908                                         megasas_complete_cmd(instance,
1909                                                              cmd_mfi, DID_OK);
1910                         }
1911                 }
1912         } else {
1913                 for (i = 0; i < instance->max_fw_cmds; i++) {
1914                         cmd_mfi = instance->cmd_list[i];
1915                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
1916                                 MFI_CMD_ABORT)
1917                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1918                 }
1919         }
1920 }
1921
1922
1923 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1924 {
1925         /* Set critical error to block I/O & ioctls in case caller didn't */
1926         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
1927         /* Wait 1 second to ensure IO or ioctls in build have posted */
1928         msleep(1000);
1929         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1930                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1931                 (instance->ctrl_context)) {
1932                 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1933                 /* Flush */
1934                 readl(&instance->reg_set->doorbell);
1935                 if (instance->requestorId && instance->peerIsPresent)
1936                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1937         } else {
1938                 writel(MFI_STOP_ADP,
1939                         &instance->reg_set->inbound_doorbell);
1940         }
1941         /* Complete outstanding ioctls when adapter is killed */
1942         megasas_complete_outstanding_ioctls(instance);
1943 }
1944
1945  /**
1946   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1947   *                                     restored to max value
1948   * @instance:                  Adapter soft state
1949   *
1950   */
1951 void
1952 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1953 {
1954         unsigned long flags;
1955
1956         if (instance->flag & MEGASAS_FW_BUSY
1957             && time_after(jiffies, instance->last_time + 5 * HZ)
1958             && atomic_read(&instance->fw_outstanding) <
1959             instance->throttlequeuedepth + 1) {
1960
1961                 spin_lock_irqsave(instance->host->host_lock, flags);
1962                 instance->flag &= ~MEGASAS_FW_BUSY;
1963
1964                 instance->host->can_queue = instance->cur_can_queue;
1965                 spin_unlock_irqrestore(instance->host->host_lock, flags);
1966         }
1967 }
1968
1969 /**
1970  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
1971  * @instance_addr:                      Address of adapter soft state
1972  *
1973  * Tasklet to complete cmds
1974  */
1975 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1976 {
1977         u32 producer;
1978         u32 consumer;
1979         u32 context;
1980         struct megasas_cmd *cmd;
1981         struct megasas_instance *instance =
1982                                 (struct megasas_instance *)instance_addr;
1983         unsigned long flags;
1984
1985         /* If we have already declared adapter dead, donot complete cmds */
1986         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
1987                 return;
1988
1989         spin_lock_irqsave(&instance->completion_lock, flags);
1990
1991         producer = le32_to_cpu(*instance->producer);
1992         consumer = le32_to_cpu(*instance->consumer);
1993
1994         while (consumer != producer) {
1995                 context = le32_to_cpu(instance->reply_queue[consumer]);
1996                 if (context >= instance->max_fw_cmds) {
1997                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
1998                                 context);
1999                         BUG();
2000                 }
2001
2002                 cmd = instance->cmd_list[context];
2003
2004                 megasas_complete_cmd(instance, cmd, DID_OK);
2005
2006                 consumer++;
2007                 if (consumer == (instance->max_fw_cmds + 1)) {
2008                         consumer = 0;
2009                 }
2010         }
2011
2012         *instance->consumer = cpu_to_le32(producer);
2013
2014         spin_unlock_irqrestore(&instance->completion_lock, flags);
2015
2016         /*
2017          * Check if we can restore can_queue
2018          */
2019         megasas_check_and_restore_queue_depth(instance);
2020 }
2021
2022 /**
2023  * megasas_start_timer - Initializes a timer object
2024  * @instance:           Adapter soft state
2025  * @timer:              timer object to be initialized
2026  * @fn:                 timer function
2027  * @interval:           time interval between timer function call
2028  *
2029  */
2030 void megasas_start_timer(struct megasas_instance *instance,
2031                         struct timer_list *timer,
2032                         void *fn, unsigned long interval)
2033 {
2034         init_timer(timer);
2035         timer->expires = jiffies + interval;
2036         timer->data = (unsigned long)instance;
2037         timer->function = fn;
2038         add_timer(timer);
2039 }
2040
2041 static void
2042 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2043
2044 static void
2045 process_fw_state_change_wq(struct work_struct *work);
2046
2047 void megasas_do_ocr(struct megasas_instance *instance)
2048 {
2049         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2050         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2051         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2052                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2053         }
2054         instance->instancet->disable_intr(instance);
2055         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2056         instance->issuepend_done = 0;
2057
2058         atomic_set(&instance->fw_outstanding, 0);
2059         megasas_internal_reset_defer_cmds(instance);
2060         process_fw_state_change_wq(&instance->work_init);
2061 }
2062
2063 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2064                                             int initial)
2065 {
2066         struct megasas_cmd *cmd;
2067         struct megasas_dcmd_frame *dcmd;
2068         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2069         dma_addr_t new_affiliation_111_h;
2070         int ld, retval = 0;
2071         u8 thisVf;
2072
2073         cmd = megasas_get_cmd(instance);
2074
2075         if (!cmd) {
2076                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2077                        "Failed to get cmd for scsi%d\n",
2078                         instance->host->host_no);
2079                 return -ENOMEM;
2080         }
2081
2082         dcmd = &cmd->frame->dcmd;
2083
2084         if (!instance->vf_affiliation_111) {
2085                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2086                        "affiliation for scsi%d\n", instance->host->host_no);
2087                 megasas_return_cmd(instance, cmd);
2088                 return -ENOMEM;
2089         }
2090
2091         if (initial)
2092                         memset(instance->vf_affiliation_111, 0,
2093                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2094         else {
2095                 new_affiliation_111 =
2096                         pci_alloc_consistent(instance->pdev,
2097                                              sizeof(struct MR_LD_VF_AFFILIATION_111),
2098                                              &new_affiliation_111_h);
2099                 if (!new_affiliation_111) {
2100                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2101                                "memory for new affiliation for scsi%d\n",
2102                                instance->host->host_no);
2103                         megasas_return_cmd(instance, cmd);
2104                         return -ENOMEM;
2105                 }
2106                 memset(new_affiliation_111, 0,
2107                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2108         }
2109
2110         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2111
2112         dcmd->cmd = MFI_CMD_DCMD;
2113         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2114         dcmd->sge_count = 1;
2115         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2116         dcmd->timeout = 0;
2117         dcmd->pad_0 = 0;
2118         dcmd->data_xfer_len =
2119                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2120         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2121
2122         if (initial)
2123                 dcmd->sgl.sge32[0].phys_addr =
2124                         cpu_to_le32(instance->vf_affiliation_111_h);
2125         else
2126                 dcmd->sgl.sge32[0].phys_addr =
2127                         cpu_to_le32(new_affiliation_111_h);
2128
2129         dcmd->sgl.sge32[0].length = cpu_to_le32(
2130                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2131
2132         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2133                "scsi%d\n", instance->host->host_no);
2134
2135         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2136                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2137                        " failed with status 0x%x for scsi%d\n",
2138                        dcmd->cmd_status, instance->host->host_no);
2139                 retval = 1; /* Do a scan if we couldn't get affiliation */
2140                 goto out;
2141         }
2142
2143         if (!initial) {
2144                 thisVf = new_affiliation_111->thisVf;
2145                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2146                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2147                             new_affiliation_111->map[ld].policy[thisVf]) {
2148                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2149                                        "Got new LD/VF affiliation for scsi%d\n",
2150                                        instance->host->host_no);
2151                                 memcpy(instance->vf_affiliation_111,
2152                                        new_affiliation_111,
2153                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2154                                 retval = 1;
2155                                 goto out;
2156                         }
2157         }
2158 out:
2159         if (new_affiliation_111) {
2160                 pci_free_consistent(instance->pdev,
2161                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2162                                     new_affiliation_111,
2163                                     new_affiliation_111_h);
2164         }
2165
2166         megasas_return_cmd(instance, cmd);
2167
2168         return retval;
2169 }
2170
2171 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2172                                             int initial)
2173 {
2174         struct megasas_cmd *cmd;
2175         struct megasas_dcmd_frame *dcmd;
2176         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2177         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2178         dma_addr_t new_affiliation_h;
2179         int i, j, retval = 0, found = 0, doscan = 0;
2180         u8 thisVf;
2181
2182         cmd = megasas_get_cmd(instance);
2183
2184         if (!cmd) {
2185                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2186                        "Failed to get cmd for scsi%d\n",
2187                        instance->host->host_no);
2188                 return -ENOMEM;
2189         }
2190
2191         dcmd = &cmd->frame->dcmd;
2192
2193         if (!instance->vf_affiliation) {
2194                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2195                        "affiliation for scsi%d\n", instance->host->host_no);
2196                 megasas_return_cmd(instance, cmd);
2197                 return -ENOMEM;
2198         }
2199
2200         if (initial)
2201                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2202                        sizeof(struct MR_LD_VF_AFFILIATION));
2203         else {
2204                 new_affiliation =
2205                         pci_alloc_consistent(instance->pdev,
2206                                              (MAX_LOGICAL_DRIVES + 1) *
2207                                              sizeof(struct MR_LD_VF_AFFILIATION),
2208                                              &new_affiliation_h);
2209                 if (!new_affiliation) {
2210                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2211                                "memory for new affiliation for scsi%d\n",
2212                                instance->host->host_no);
2213                         megasas_return_cmd(instance, cmd);
2214                         return -ENOMEM;
2215                 }
2216                 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2217                        sizeof(struct MR_LD_VF_AFFILIATION));
2218         }
2219
2220         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2221
2222         dcmd->cmd = MFI_CMD_DCMD;
2223         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2224         dcmd->sge_count = 1;
2225         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2226         dcmd->timeout = 0;
2227         dcmd->pad_0 = 0;
2228         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2229                 sizeof(struct MR_LD_VF_AFFILIATION));
2230         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2231
2232         if (initial)
2233                 dcmd->sgl.sge32[0].phys_addr =
2234                         cpu_to_le32(instance->vf_affiliation_h);
2235         else
2236                 dcmd->sgl.sge32[0].phys_addr =
2237                         cpu_to_le32(new_affiliation_h);
2238
2239         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2240                 sizeof(struct MR_LD_VF_AFFILIATION));
2241
2242         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2243                "scsi%d\n", instance->host->host_no);
2244
2245
2246         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2247                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2248                        " failed with status 0x%x for scsi%d\n",
2249                        dcmd->cmd_status, instance->host->host_no);
2250                 retval = 1; /* Do a scan if we couldn't get affiliation */
2251                 goto out;
2252         }
2253
2254         if (!initial) {
2255                 if (!new_affiliation->ldCount) {
2256                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2257                                "affiliation for passive path for scsi%d\n",
2258                                instance->host->host_no);
2259                         retval = 1;
2260                         goto out;
2261                 }
2262                 newmap = new_affiliation->map;
2263                 savedmap = instance->vf_affiliation->map;
2264                 thisVf = new_affiliation->thisVf;
2265                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2266                         found = 0;
2267                         for (j = 0; j < instance->vf_affiliation->ldCount;
2268                              j++) {
2269                                 if (newmap->ref.targetId ==
2270                                     savedmap->ref.targetId) {
2271                                         found = 1;
2272                                         if (newmap->policy[thisVf] !=
2273                                             savedmap->policy[thisVf]) {
2274                                                 doscan = 1;
2275                                                 goto out;
2276                                         }
2277                                 }
2278                                 savedmap = (struct MR_LD_VF_MAP *)
2279                                         ((unsigned char *)savedmap +
2280                                          savedmap->size);
2281                         }
2282                         if (!found && newmap->policy[thisVf] !=
2283                             MR_LD_ACCESS_HIDDEN) {
2284                                 doscan = 1;
2285                                 goto out;
2286                         }
2287                         newmap = (struct MR_LD_VF_MAP *)
2288                                 ((unsigned char *)newmap + newmap->size);
2289                 }
2290
2291                 newmap = new_affiliation->map;
2292                 savedmap = instance->vf_affiliation->map;
2293
2294                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2295                         found = 0;
2296                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2297                                 if (savedmap->ref.targetId ==
2298                                     newmap->ref.targetId) {
2299                                         found = 1;
2300                                         if (savedmap->policy[thisVf] !=
2301                                             newmap->policy[thisVf]) {
2302                                                 doscan = 1;
2303                                                 goto out;
2304                                         }
2305                                 }
2306                                 newmap = (struct MR_LD_VF_MAP *)
2307                                         ((unsigned char *)newmap +
2308                                          newmap->size);
2309                         }
2310                         if (!found && savedmap->policy[thisVf] !=
2311                             MR_LD_ACCESS_HIDDEN) {
2312                                 doscan = 1;
2313                                 goto out;
2314                         }
2315                         savedmap = (struct MR_LD_VF_MAP *)
2316                                 ((unsigned char *)savedmap +
2317                                  savedmap->size);
2318                 }
2319         }
2320 out:
2321         if (doscan) {
2322                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2323                        "affiliation for scsi%d\n", instance->host->host_no);
2324                 memcpy(instance->vf_affiliation, new_affiliation,
2325                        new_affiliation->size);
2326                 retval = 1;
2327         }
2328
2329         if (new_affiliation)
2330                 pci_free_consistent(instance->pdev,
2331                                     (MAX_LOGICAL_DRIVES + 1) *
2332                                     sizeof(struct MR_LD_VF_AFFILIATION),
2333                                     new_affiliation, new_affiliation_h);
2334         megasas_return_cmd(instance, cmd);
2335
2336         return retval;
2337 }
2338
2339 /* This function will get the current SR-IOV LD/VF affiliation */
2340 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2341         int initial)
2342 {
2343         int retval;
2344
2345         if (instance->PlasmaFW111)
2346                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2347         else
2348                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2349         return retval;
2350 }
2351
2352 /* This function will tell FW to start the SR-IOV heartbeat */
2353 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2354                                          int initial)
2355 {
2356         struct megasas_cmd *cmd;
2357         struct megasas_dcmd_frame *dcmd;
2358         int retval = 0;
2359
2360         cmd = megasas_get_cmd(instance);
2361
2362         if (!cmd) {
2363                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2364                        "Failed to get cmd for scsi%d\n",
2365                        instance->host->host_no);
2366                 return -ENOMEM;
2367         }
2368
2369         dcmd = &cmd->frame->dcmd;
2370
2371         if (initial) {
2372                 instance->hb_host_mem =
2373                         pci_zalloc_consistent(instance->pdev,
2374                                               sizeof(struct MR_CTRL_HB_HOST_MEM),
2375                                               &instance->hb_host_mem_h);
2376                 if (!instance->hb_host_mem) {
2377                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2378                                " memory for heartbeat host memory for scsi%d\n",
2379                                instance->host->host_no);
2380                         retval = -ENOMEM;
2381                         goto out;
2382                 }
2383         }
2384
2385         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2386
2387         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2388         dcmd->cmd = MFI_CMD_DCMD;
2389         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2390         dcmd->sge_count = 1;
2391         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2392         dcmd->timeout = 0;
2393         dcmd->pad_0 = 0;
2394         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2395         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2396         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h);
2397         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2398
2399         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2400                instance->host->host_no);
2401
2402         if (instance->ctrl_context && !instance->mask_interrupts)
2403                 retval = megasas_issue_blocked_cmd(instance, cmd,
2404                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2405         else
2406                 retval = megasas_issue_polled(instance, cmd);
2407
2408         if (retval) {
2409                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2410                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2411                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2412                         "timed out" : "failed", instance->host->host_no);
2413                 retval = 1;
2414         }
2415
2416 out:
2417         megasas_return_cmd(instance, cmd);
2418
2419         return retval;
2420 }
2421
2422 /* Handler for SR-IOV heartbeat */
2423 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2424 {
2425         struct megasas_instance *instance =
2426                 (struct megasas_instance *)instance_addr;
2427
2428         if (instance->hb_host_mem->HB.fwCounter !=
2429             instance->hb_host_mem->HB.driverCounter) {
2430                 instance->hb_host_mem->HB.driverCounter =
2431                         instance->hb_host_mem->HB.fwCounter;
2432                 mod_timer(&instance->sriov_heartbeat_timer,
2433                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2434         } else {
2435                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2436                        "completed for scsi%d\n", instance->host->host_no);
2437                 schedule_work(&instance->work_init);
2438         }
2439 }
2440
2441 /**
2442  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2443  * @instance:                           Adapter soft state
2444  *
2445  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2446  * complete all its outstanding commands. Returns error if one or more IOs
2447  * are pending after this time period. It also marks the controller dead.
2448  */
2449 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2450 {
2451         int i, sl, outstanding;
2452         u32 reset_index;
2453         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2454         unsigned long flags;
2455         struct list_head clist_local;
2456         struct megasas_cmd *reset_cmd;
2457         u32 fw_state;
2458
2459         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2460                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2461                 __func__, __LINE__);
2462                 return FAILED;
2463         }
2464
2465         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2466
2467                 INIT_LIST_HEAD(&clist_local);
2468                 spin_lock_irqsave(&instance->hba_lock, flags);
2469                 list_splice_init(&instance->internal_reset_pending_q,
2470                                 &clist_local);
2471                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2472
2473                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2474                 for (i = 0; i < wait_time; i++) {
2475                         msleep(1000);
2476                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2477                                 break;
2478                 }
2479
2480                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2481                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2482                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2483                         return FAILED;
2484                 }
2485
2486                 reset_index = 0;
2487                 while (!list_empty(&clist_local)) {
2488                         reset_cmd = list_entry((&clist_local)->next,
2489                                                 struct megasas_cmd, list);
2490                         list_del_init(&reset_cmd->list);
2491                         if (reset_cmd->scmd) {
2492                                 reset_cmd->scmd->result = DID_RESET << 16;
2493                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2494                                         reset_index, reset_cmd,
2495                                         reset_cmd->scmd->cmnd[0]);
2496
2497                                 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2498                                 megasas_return_cmd(instance, reset_cmd);
2499                         } else if (reset_cmd->sync_cmd) {
2500                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2501                                                 "reset queue\n",
2502                                                 reset_cmd);
2503
2504                                 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2505                                 instance->instancet->fire_cmd(instance,
2506                                                 reset_cmd->frame_phys_addr,
2507                                                 0, instance->reg_set);
2508                         } else {
2509                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2510                                         "cmds lst\n",
2511                                         reset_cmd);
2512                         }
2513                         reset_index++;
2514                 }
2515
2516                 return SUCCESS;
2517         }
2518
2519         for (i = 0; i < resetwaittime; i++) {
2520                 outstanding = atomic_read(&instance->fw_outstanding);
2521
2522                 if (!outstanding)
2523                         break;
2524
2525                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2526                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2527                                "commands to complete\n",i,outstanding);
2528                         /*
2529                          * Call cmd completion routine. Cmd to be
2530                          * be completed directly without depending on isr.
2531                          */
2532                         megasas_complete_cmd_dpc((unsigned long)instance);
2533                 }
2534
2535                 msleep(1000);
2536         }
2537
2538         i = 0;
2539         outstanding = atomic_read(&instance->fw_outstanding);
2540         fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2541
2542         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2543                 goto no_outstanding;
2544
2545         if (instance->disableOnlineCtrlReset)
2546                 goto kill_hba_and_failed;
2547         do {
2548                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2549                         dev_info(&instance->pdev->dev,
2550                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n",
2551                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2552                         if (i == 3)
2553                                 goto kill_hba_and_failed;
2554                         megasas_do_ocr(instance);
2555
2556                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2557                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2558                                 __func__, __LINE__);
2559                                 return FAILED;
2560                         }
2561                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2562                                 __func__, __LINE__);
2563
2564                         for (sl = 0; sl < 10; sl++)
2565                                 msleep(500);
2566
2567                         outstanding = atomic_read(&instance->fw_outstanding);
2568
2569                         fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2570                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2571                                 goto no_outstanding;
2572                 }
2573                 i++;
2574         } while (i <= 3);
2575
2576 no_outstanding:
2577
2578         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2579                 __func__, __LINE__);
2580         return SUCCESS;
2581
2582 kill_hba_and_failed:
2583
2584         /* Reset not supported, kill adapter */
2585         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2586                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2587                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2588                 atomic_read(&instance->fw_outstanding));
2589         megasas_dump_pending_frames(instance);
2590         megaraid_sas_kill_hba(instance);
2591
2592         return FAILED;
2593 }
2594
2595 /**
2596  * megasas_generic_reset -      Generic reset routine
2597  * @scmd:                       Mid-layer SCSI command
2598  *
2599  * This routine implements a generic reset handler for device, bus and host
2600  * reset requests. Device, bus and host specific reset handlers can use this
2601  * function after they do their specific tasks.
2602  */
2603 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2604 {
2605         int ret_val;
2606         struct megasas_instance *instance;
2607
2608         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2609
2610         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2611                  scmd->cmnd[0], scmd->retries);
2612
2613         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2614                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2615                 return FAILED;
2616         }
2617
2618         ret_val = megasas_wait_for_outstanding(instance);
2619         if (ret_val == SUCCESS)
2620                 dev_notice(&instance->pdev->dev, "reset successful\n");
2621         else
2622                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2623
2624         return ret_val;
2625 }
2626
2627 /**
2628  * megasas_reset_timer - quiesce the adapter if required
2629  * @scmd:               scsi cmnd
2630  *
2631  * Sets the FW busy flag and reduces the host->can_queue if the
2632  * cmd has not been completed within the timeout period.
2633  */
2634 static enum
2635 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2636 {
2637         struct megasas_instance *instance;
2638         unsigned long flags;
2639
2640         if (time_after(jiffies, scmd->jiffies_at_alloc +
2641                                 (scmd_timeout * 2) * HZ)) {
2642                 return BLK_EH_NOT_HANDLED;
2643         }
2644
2645         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2646         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2647                 /* FW is busy, throttle IO */
2648                 spin_lock_irqsave(instance->host->host_lock, flags);
2649
2650                 instance->host->can_queue = instance->throttlequeuedepth;
2651                 instance->last_time = jiffies;
2652                 instance->flag |= MEGASAS_FW_BUSY;
2653
2654                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2655         }
2656         return BLK_EH_RESET_TIMER;
2657 }
2658
2659 /**
2660  * megasas_reset_bus_host -     Bus & host reset handler entry point
2661  */
2662 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2663 {
2664         int ret;
2665         struct megasas_instance *instance;
2666
2667         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2668
2669         /*
2670          * First wait for all commands to complete
2671          */
2672         if (instance->ctrl_context)
2673                 ret = megasas_reset_fusion(scmd->device->host, 1);
2674         else
2675                 ret = megasas_generic_reset(scmd);
2676
2677         return ret;
2678 }
2679
2680 /**
2681  * megasas_task_abort - Issues task abort request to firmware
2682  *                      (supported only for fusion adapters)
2683  * @scmd:               SCSI command pointer
2684  */
2685 static int megasas_task_abort(struct scsi_cmnd *scmd)
2686 {
2687         int ret;
2688         struct megasas_instance *instance;
2689
2690         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2691
2692         if (instance->ctrl_context)
2693                 ret = megasas_task_abort_fusion(scmd);
2694         else {
2695                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
2696                 ret = FAILED;
2697         }
2698
2699         return ret;
2700 }
2701
2702 /**
2703  * megasas_reset_target:  Issues target reset request to firmware
2704  *                        (supported only for fusion adapters)
2705  * @scmd:                 SCSI command pointer
2706  */
2707 static int megasas_reset_target(struct scsi_cmnd *scmd)
2708 {
2709         int ret;
2710         struct megasas_instance *instance;
2711
2712         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2713
2714         if (instance->ctrl_context)
2715                 ret = megasas_reset_target_fusion(scmd);
2716         else {
2717                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
2718                 ret = FAILED;
2719         }
2720
2721         return ret;
2722 }
2723
2724 /**
2725  * megasas_bios_param - Returns disk geometry for a disk
2726  * @sdev:               device handle
2727  * @bdev:               block device
2728  * @capacity:           drive capacity
2729  * @geom:               geometry parameters
2730  */
2731 static int
2732 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2733                  sector_t capacity, int geom[])
2734 {
2735         int heads;
2736         int sectors;
2737         sector_t cylinders;
2738         unsigned long tmp;
2739
2740         /* Default heads (64) & sectors (32) */
2741         heads = 64;
2742         sectors = 32;
2743
2744         tmp = heads * sectors;
2745         cylinders = capacity;
2746
2747         sector_div(cylinders, tmp);
2748
2749         /*
2750          * Handle extended translation size for logical drives > 1Gb
2751          */
2752
2753         if (capacity >= 0x200000) {
2754                 heads = 255;
2755                 sectors = 63;
2756                 tmp = heads*sectors;
2757                 cylinders = capacity;
2758                 sector_div(cylinders, tmp);
2759         }
2760
2761         geom[0] = heads;
2762         geom[1] = sectors;
2763         geom[2] = cylinders;
2764
2765         return 0;
2766 }
2767
2768 static void megasas_aen_polling(struct work_struct *work);
2769
2770 /**
2771  * megasas_service_aen -        Processes an event notification
2772  * @instance:                   Adapter soft state
2773  * @cmd:                        AEN command completed by the ISR
2774  *
2775  * For AEN, driver sends a command down to FW that is held by the FW till an
2776  * event occurs. When an event of interest occurs, FW completes the command
2777  * that it was previously holding.
2778  *
2779  * This routines sends SIGIO signal to processes that have registered with the
2780  * driver for AEN.
2781  */
2782 static void
2783 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2784 {
2785         unsigned long flags;
2786
2787         /*
2788          * Don't signal app if it is just an aborted previously registered aen
2789          */
2790         if ((!cmd->abort_aen) && (instance->unload == 0)) {
2791                 spin_lock_irqsave(&poll_aen_lock, flags);
2792                 megasas_poll_wait_aen = 1;
2793                 spin_unlock_irqrestore(&poll_aen_lock, flags);
2794                 wake_up(&megasas_poll_wait);
2795                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2796         }
2797         else
2798                 cmd->abort_aen = 0;
2799
2800         instance->aen_cmd = NULL;
2801
2802         megasas_return_cmd(instance, cmd);
2803
2804         if ((instance->unload == 0) &&
2805                 ((instance->issuepend_done == 1))) {
2806                 struct megasas_aen_event *ev;
2807
2808                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2809                 if (!ev) {
2810                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2811                 } else {
2812                         ev->instance = instance;
2813                         instance->ev = ev;
2814                         INIT_DELAYED_WORK(&ev->hotplug_work,
2815                                           megasas_aen_polling);
2816                         schedule_delayed_work(&ev->hotplug_work, 0);
2817                 }
2818         }
2819 }
2820
2821 static ssize_t
2822 megasas_fw_crash_buffer_store(struct device *cdev,
2823         struct device_attribute *attr, const char *buf, size_t count)
2824 {
2825         struct Scsi_Host *shost = class_to_shost(cdev);
2826         struct megasas_instance *instance =
2827                 (struct megasas_instance *) shost->hostdata;
2828         int val = 0;
2829         unsigned long flags;
2830
2831         if (kstrtoint(buf, 0, &val) != 0)
2832                 return -EINVAL;
2833
2834         spin_lock_irqsave(&instance->crashdump_lock, flags);
2835         instance->fw_crash_buffer_offset = val;
2836         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2837         return strlen(buf);
2838 }
2839
2840 static ssize_t
2841 megasas_fw_crash_buffer_show(struct device *cdev,
2842         struct device_attribute *attr, char *buf)
2843 {
2844         struct Scsi_Host *shost = class_to_shost(cdev);
2845         struct megasas_instance *instance =
2846                 (struct megasas_instance *) shost->hostdata;
2847         u32 size;
2848         unsigned long buff_addr;
2849         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2850         unsigned long src_addr;
2851         unsigned long flags;
2852         u32 buff_offset;
2853
2854         spin_lock_irqsave(&instance->crashdump_lock, flags);
2855         buff_offset = instance->fw_crash_buffer_offset;
2856         if (!instance->crash_dump_buf &&
2857                 !((instance->fw_crash_state == AVAILABLE) ||
2858                 (instance->fw_crash_state == COPYING))) {
2859                 dev_err(&instance->pdev->dev,
2860                         "Firmware crash dump is not available\n");
2861                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2862                 return -EINVAL;
2863         }
2864
2865         buff_addr = (unsigned long) buf;
2866
2867         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
2868                 dev_err(&instance->pdev->dev,
2869                         "Firmware crash dump offset is out of range\n");
2870                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2871                 return 0;
2872         }
2873
2874         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2875         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2876
2877         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2878                 (buff_offset % dmachunk);
2879         memcpy(buf, (void *)src_addr, size);
2880         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2881
2882         return size;
2883 }
2884
2885 static ssize_t
2886 megasas_fw_crash_buffer_size_show(struct device *cdev,
2887         struct device_attribute *attr, char *buf)
2888 {
2889         struct Scsi_Host *shost = class_to_shost(cdev);
2890         struct megasas_instance *instance =
2891                 (struct megasas_instance *) shost->hostdata;
2892
2893         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2894                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2895 }
2896
2897 static ssize_t
2898 megasas_fw_crash_state_store(struct device *cdev,
2899         struct device_attribute *attr, const char *buf, size_t count)
2900 {
2901         struct Scsi_Host *shost = class_to_shost(cdev);
2902         struct megasas_instance *instance =
2903                 (struct megasas_instance *) shost->hostdata;
2904         int val = 0;
2905         unsigned long flags;
2906
2907         if (kstrtoint(buf, 0, &val) != 0)
2908                 return -EINVAL;
2909
2910         if ((val <= AVAILABLE || val > COPY_ERROR)) {
2911                 dev_err(&instance->pdev->dev, "application updates invalid "
2912                         "firmware crash state\n");
2913                 return -EINVAL;
2914         }
2915
2916         instance->fw_crash_state = val;
2917
2918         if ((val == COPIED) || (val == COPY_ERROR)) {
2919                 spin_lock_irqsave(&instance->crashdump_lock, flags);
2920                 megasas_free_host_crash_buffer(instance);
2921                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2922                 if (val == COPY_ERROR)
2923                         dev_info(&instance->pdev->dev, "application failed to "
2924                                 "copy Firmware crash dump\n");
2925                 else
2926                         dev_info(&instance->pdev->dev, "Firmware crash dump "
2927                                 "copied successfully\n");
2928         }
2929         return strlen(buf);
2930 }
2931
2932 static ssize_t
2933 megasas_fw_crash_state_show(struct device *cdev,
2934         struct device_attribute *attr, char *buf)
2935 {
2936         struct Scsi_Host *shost = class_to_shost(cdev);
2937         struct megasas_instance *instance =
2938                 (struct megasas_instance *) shost->hostdata;
2939
2940         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2941 }
2942
2943 static ssize_t
2944 megasas_page_size_show(struct device *cdev,
2945         struct device_attribute *attr, char *buf)
2946 {
2947         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2948 }
2949
2950 static ssize_t
2951 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
2952         char *buf)
2953 {
2954         struct Scsi_Host *shost = class_to_shost(cdev);
2955         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
2956
2957         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
2958 }
2959
2960 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2961         megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2962 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2963         megasas_fw_crash_buffer_size_show, NULL);
2964 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2965         megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2966 static DEVICE_ATTR(page_size, S_IRUGO,
2967         megasas_page_size_show, NULL);
2968 static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
2969         megasas_ldio_outstanding_show, NULL);
2970
2971 struct device_attribute *megaraid_host_attrs[] = {
2972         &dev_attr_fw_crash_buffer_size,
2973         &dev_attr_fw_crash_buffer,
2974         &dev_attr_fw_crash_state,
2975         &dev_attr_page_size,
2976         &dev_attr_ldio_outstanding,
2977         NULL,
2978 };
2979
2980 /*
2981  * Scsi host template for megaraid_sas driver
2982  */
2983 static struct scsi_host_template megasas_template = {
2984
2985         .module = THIS_MODULE,
2986         .name = "Avago SAS based MegaRAID driver",
2987         .proc_name = "megaraid_sas",
2988         .slave_configure = megasas_slave_configure,
2989         .slave_alloc = megasas_slave_alloc,
2990         .slave_destroy = megasas_slave_destroy,
2991         .queuecommand = megasas_queue_command,
2992         .eh_target_reset_handler = megasas_reset_target,
2993         .eh_abort_handler = megasas_task_abort,
2994         .eh_host_reset_handler = megasas_reset_bus_host,
2995         .eh_timed_out = megasas_reset_timer,
2996         .shost_attrs = megaraid_host_attrs,
2997         .bios_param = megasas_bios_param,
2998         .use_clustering = ENABLE_CLUSTERING,
2999         .change_queue_depth = scsi_change_queue_depth,
3000         .no_write_same = 1,
3001 };
3002
3003 /**
3004  * megasas_complete_int_cmd -   Completes an internal command
3005  * @instance:                   Adapter soft state
3006  * @cmd:                        Command to be completed
3007  *
3008  * The megasas_issue_blocked_cmd() function waits for a command to complete
3009  * after it issues a command. This function wakes up that waiting routine by
3010  * calling wake_up() on the wait queue.
3011  */
3012 static void
3013 megasas_complete_int_cmd(struct megasas_instance *instance,
3014                          struct megasas_cmd *cmd)
3015 {
3016         cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3017         wake_up(&instance->int_cmd_wait_q);
3018 }
3019
3020 /**
3021  * megasas_complete_abort -     Completes aborting a command
3022  * @instance:                   Adapter soft state
3023  * @cmd:                        Cmd that was issued to abort another cmd
3024  *
3025  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3026  * after it issues an abort on a previously issued command. This function
3027  * wakes up all functions waiting on the same wait queue.
3028  */
3029 static void
3030 megasas_complete_abort(struct megasas_instance *instance,
3031                        struct megasas_cmd *cmd)
3032 {
3033         if (cmd->sync_cmd) {
3034                 cmd->sync_cmd = 0;
3035                 cmd->cmd_status_drv = 0;
3036                 wake_up(&instance->abort_cmd_wait_q);
3037         }
3038 }
3039
3040 /**
3041  * megasas_complete_cmd -       Completes a command
3042  * @instance:                   Adapter soft state
3043  * @cmd:                        Command to be completed
3044  * @alt_status:                 If non-zero, use this value as status to
3045  *                              SCSI mid-layer instead of the value returned
3046  *                              by the FW. This should be used if caller wants
3047  *                              an alternate status (as in the case of aborted
3048  *                              commands)
3049  */
3050 void
3051 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3052                      u8 alt_status)
3053 {
3054         int exception = 0;
3055         struct megasas_header *hdr = &cmd->frame->hdr;
3056         unsigned long flags;
3057         struct fusion_context *fusion = instance->ctrl_context;
3058         u32 opcode, status;
3059
3060         /* flag for the retry reset */
3061         cmd->retry_for_fw_reset = 0;
3062
3063         if (cmd->scmd)
3064                 cmd->scmd->SCp.ptr = NULL;
3065
3066         switch (hdr->cmd) {
3067         case MFI_CMD_INVALID:
3068                 /* Some older 1068 controller FW may keep a pended
3069                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3070                    when booting the kdump kernel.  Ignore this command to
3071                    prevent a kernel panic on shutdown of the kdump kernel. */
3072                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3073                        "completed\n");
3074                 dev_warn(&instance->pdev->dev, "If you have a controller "
3075                        "other than PERC5, please upgrade your firmware\n");
3076                 break;
3077         case MFI_CMD_PD_SCSI_IO:
3078         case MFI_CMD_LD_SCSI_IO:
3079
3080                 /*
3081                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3082                  * issued either through an IO path or an IOCTL path. If it
3083                  * was via IOCTL, we will send it to internal completion.
3084                  */
3085                 if (cmd->sync_cmd) {
3086                         cmd->sync_cmd = 0;
3087                         megasas_complete_int_cmd(instance, cmd);
3088                         break;
3089                 }
3090
3091         case MFI_CMD_LD_READ:
3092         case MFI_CMD_LD_WRITE:
3093
3094                 if (alt_status) {
3095                         cmd->scmd->result = alt_status << 16;
3096                         exception = 1;
3097                 }
3098
3099                 if (exception) {
3100
3101                         atomic_dec(&instance->fw_outstanding);
3102
3103                         scsi_dma_unmap(cmd->scmd);
3104                         cmd->scmd->scsi_done(cmd->scmd);
3105                         megasas_return_cmd(instance, cmd);
3106
3107                         break;
3108                 }
3109
3110                 switch (hdr->cmd_status) {
3111
3112                 case MFI_STAT_OK:
3113                         cmd->scmd->result = DID_OK << 16;
3114                         break;
3115
3116                 case MFI_STAT_SCSI_IO_FAILED:
3117                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3118                         cmd->scmd->result =
3119                             (DID_ERROR << 16) | hdr->scsi_status;
3120                         break;
3121
3122                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3123
3124                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3125
3126                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3127                                 memset(cmd->scmd->sense_buffer, 0,
3128                                        SCSI_SENSE_BUFFERSIZE);
3129                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3130                                        hdr->sense_len);
3131
3132                                 cmd->scmd->result |= DRIVER_SENSE << 24;
3133                         }
3134
3135                         break;
3136
3137                 case MFI_STAT_LD_OFFLINE:
3138                 case MFI_STAT_DEVICE_NOT_FOUND:
3139                         cmd->scmd->result = DID_BAD_TARGET << 16;
3140                         break;
3141
3142                 default:
3143                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3144                                hdr->cmd_status);
3145                         cmd->scmd->result = DID_ERROR << 16;
3146                         break;
3147                 }
3148
3149                 atomic_dec(&instance->fw_outstanding);
3150
3151                 scsi_dma_unmap(cmd->scmd);
3152                 cmd->scmd->scsi_done(cmd->scmd);
3153                 megasas_return_cmd(instance, cmd);
3154
3155                 break;
3156
3157         case MFI_CMD_SMP:
3158         case MFI_CMD_STP:
3159         case MFI_CMD_DCMD:
3160                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3161                 /* Check for LD map update */
3162                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3163                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3164                         fusion->fast_path_io = 0;
3165                         spin_lock_irqsave(instance->host->host_lock, flags);
3166                         instance->map_update_cmd = NULL;
3167                         if (cmd->frame->hdr.cmd_status != 0) {
3168                                 if (cmd->frame->hdr.cmd_status !=
3169                                     MFI_STAT_NOT_FOUND)
3170                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3171                                                cmd->frame->hdr.cmd_status);
3172                                 else {
3173                                         megasas_return_cmd(instance, cmd);
3174                                         spin_unlock_irqrestore(
3175                                                 instance->host->host_lock,
3176                                                 flags);
3177                                         break;
3178                                 }
3179                         } else
3180                                 instance->map_id++;
3181                         megasas_return_cmd(instance, cmd);
3182
3183                         /*
3184                          * Set fast path IO to ZERO.
3185                          * Validate Map will set proper value.
3186                          * Meanwhile all IOs will go as LD IO.
3187                          */
3188                         if (MR_ValidateMapInfo(instance))
3189                                 fusion->fast_path_io = 1;
3190                         else
3191                                 fusion->fast_path_io = 0;
3192                         megasas_sync_map_info(instance);
3193                         spin_unlock_irqrestore(instance->host->host_lock,
3194                                                flags);
3195                         break;
3196                 }
3197                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3198                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3199                         spin_lock_irqsave(&poll_aen_lock, flags);
3200                         megasas_poll_wait_aen = 0;
3201                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3202                 }
3203
3204                 /* FW has an updated PD sequence */
3205                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3206                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3207
3208                         spin_lock_irqsave(instance->host->host_lock, flags);
3209                         status = cmd->frame->hdr.cmd_status;
3210                         instance->jbod_seq_cmd = NULL;
3211                         megasas_return_cmd(instance, cmd);
3212
3213                         if (status == MFI_STAT_OK) {
3214                                 instance->pd_seq_map_id++;
3215                                 /* Re-register a pd sync seq num cmd */
3216                                 if (megasas_sync_pd_seq_num(instance, true))
3217                                         instance->use_seqnum_jbod_fp = false;
3218                         } else
3219                                 instance->use_seqnum_jbod_fp = false;
3220
3221                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3222                         break;
3223                 }
3224
3225                 /*
3226                  * See if got an event notification
3227                  */
3228                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3229                         megasas_service_aen(instance, cmd);
3230                 else
3231                         megasas_complete_int_cmd(instance, cmd);
3232
3233                 break;
3234
3235         case MFI_CMD_ABORT:
3236                 /*
3237                  * Cmd issued to abort another cmd returned
3238                  */
3239                 megasas_complete_abort(instance, cmd);
3240                 break;
3241
3242         default:
3243                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3244                        hdr->cmd);
3245                 break;
3246         }
3247 }
3248
3249 /**
3250  * megasas_issue_pending_cmds_again -   issue all pending cmds
3251  *                                      in FW again because of the fw reset
3252  * @instance:                           Adapter soft state
3253  */
3254 static inline void
3255 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3256 {
3257         struct megasas_cmd *cmd;
3258         struct list_head clist_local;
3259         union megasas_evt_class_locale class_locale;
3260         unsigned long flags;
3261         u32 seq_num;
3262
3263         INIT_LIST_HEAD(&clist_local);
3264         spin_lock_irqsave(&instance->hba_lock, flags);
3265         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3266         spin_unlock_irqrestore(&instance->hba_lock, flags);
3267
3268         while (!list_empty(&clist_local)) {
3269                 cmd = list_entry((&clist_local)->next,
3270                                         struct megasas_cmd, list);
3271                 list_del_init(&cmd->list);
3272
3273                 if (cmd->sync_cmd || cmd->scmd) {
3274                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3275                                 "detected to be pending while HBA reset\n",
3276                                         cmd, cmd->scmd, cmd->sync_cmd);
3277
3278                         cmd->retry_for_fw_reset++;
3279
3280                         if (cmd->retry_for_fw_reset == 3) {
3281                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3282                                         "was tried multiple times during reset."
3283                                         "Shutting down the HBA\n",
3284                                         cmd, cmd->scmd, cmd->sync_cmd);
3285                                 instance->instancet->disable_intr(instance);
3286                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3287                                 megaraid_sas_kill_hba(instance);
3288                                 return;
3289                         }
3290                 }
3291
3292                 if (cmd->sync_cmd == 1) {
3293                         if (cmd->scmd) {
3294                                 dev_notice(&instance->pdev->dev, "unexpected"
3295                                         "cmd attached to internal command!\n");
3296                         }
3297                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3298                                                 "on the internal reset queue,"
3299                                                 "issue it again.\n", cmd);
3300                         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3301                         instance->instancet->fire_cmd(instance,
3302                                                         cmd->frame_phys_addr,
3303                                                         0, instance->reg_set);
3304                 } else if (cmd->scmd) {
3305                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3306                         "detected on the internal queue, issue again.\n",
3307                         cmd, cmd->scmd->cmnd[0]);
3308
3309                         atomic_inc(&instance->fw_outstanding);
3310                         instance->instancet->fire_cmd(instance,
3311                                         cmd->frame_phys_addr,
3312                                         cmd->frame_count-1, instance->reg_set);
3313                 } else {
3314                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3315                                 "internal reset defer list while re-issue!!\n",
3316                                 cmd);
3317                 }
3318         }
3319
3320         if (instance->aen_cmd) {
3321                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3322                 megasas_return_cmd(instance, instance->aen_cmd);
3323
3324                 instance->aen_cmd = NULL;
3325         }
3326
3327         /*
3328          * Initiate AEN (Asynchronous Event Notification)
3329          */
3330         seq_num = instance->last_seq_num;
3331         class_locale.members.reserved = 0;
3332         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3333         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3334
3335         megasas_register_aen(instance, seq_num, class_locale.word);
3336 }
3337
3338 /**
3339  * Move the internal reset pending commands to a deferred queue.
3340  *
3341  * We move the commands pending at internal reset time to a
3342  * pending queue. This queue would be flushed after successful
3343  * completion of the internal reset sequence. if the internal reset
3344  * did not complete in time, the kernel reset handler would flush
3345  * these commands.
3346  **/
3347 static void
3348 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3349 {
3350         struct megasas_cmd *cmd;
3351         int i;
3352         u32 max_cmd = instance->max_fw_cmds;
3353         u32 defer_index;
3354         unsigned long flags;
3355
3356         defer_index = 0;
3357         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3358         for (i = 0; i < max_cmd; i++) {
3359                 cmd = instance->cmd_list[i];
3360                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3361                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3362                                         "on the defer queue as internal\n",
3363                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3364
3365                         if (!list_empty(&cmd->list)) {
3366                                 dev_notice(&instance->pdev->dev, "ERROR while"
3367                                         " moving this cmd:%p, %d %p, it was"
3368                                         "discovered on some list?\n",
3369                                         cmd, cmd->sync_cmd, cmd->scmd);
3370
3371                                 list_del_init(&cmd->list);
3372                         }
3373                         defer_index++;
3374                         list_add_tail(&cmd->list,
3375                                 &instance->internal_reset_pending_q);
3376                 }
3377         }
3378         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3379 }
3380
3381
3382 static void
3383 process_fw_state_change_wq(struct work_struct *work)
3384 {
3385         struct megasas_instance *instance =
3386                 container_of(work, struct megasas_instance, work_init);
3387         u32 wait;
3388         unsigned long flags;
3389
3390     if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3391                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3392                                 atomic_read(&instance->adprecovery));
3393                 return ;
3394         }
3395
3396         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3397                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3398                                         "state, restarting it...\n");
3399
3400                 instance->instancet->disable_intr(instance);
3401                 atomic_set(&instance->fw_outstanding, 0);
3402
3403                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3404                 instance->instancet->adp_reset(instance, instance->reg_set);
3405                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3406
3407                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3408                                         "initiating next stage...\n");
3409
3410                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3411                                         "state 2 starting...\n");
3412
3413                 /* waiting for about 20 second before start the second init */
3414                 for (wait = 0; wait < 30; wait++) {
3415                         msleep(1000);
3416                 }
3417
3418                 if (megasas_transition_to_ready(instance, 1)) {
3419                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3420
3421                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3422                         megaraid_sas_kill_hba(instance);
3423                         return ;
3424                 }
3425
3426                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3427                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3428                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3429                         ) {
3430                         *instance->consumer = *instance->producer;
3431                 } else {
3432                         *instance->consumer = 0;
3433                         *instance->producer = 0;
3434                 }
3435
3436                 megasas_issue_init_mfi(instance);
3437
3438                 spin_lock_irqsave(&instance->hba_lock, flags);
3439                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3440                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3441                 instance->instancet->enable_intr(instance);
3442
3443                 megasas_issue_pending_cmds_again(instance);
3444                 instance->issuepend_done = 1;
3445         }
3446 }
3447
3448 /**
3449  * megasas_deplete_reply_queue -        Processes all completed commands
3450  * @instance:                           Adapter soft state
3451  * @alt_status:                         Alternate status to be returned to
3452  *                                      SCSI mid-layer instead of the status
3453  *                                      returned by the FW
3454  * Note: this must be called with hba lock held
3455  */
3456 static int
3457 megasas_deplete_reply_queue(struct megasas_instance *instance,
3458                                         u8 alt_status)
3459 {
3460         u32 mfiStatus;
3461         u32 fw_state;
3462
3463         if ((mfiStatus = instance->instancet->check_reset(instance,
3464                                         instance->reg_set)) == 1) {
3465                 return IRQ_HANDLED;
3466         }
3467
3468         if ((mfiStatus = instance->instancet->clear_intr(
3469                                                 instance->reg_set)
3470                                                 ) == 0) {
3471                 /* Hardware may not set outbound_intr_status in MSI-X mode */
3472                 if (!instance->msix_vectors)
3473                         return IRQ_NONE;
3474         }
3475
3476         instance->mfiStatus = mfiStatus;
3477
3478         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3479                 fw_state = instance->instancet->read_fw_status_reg(
3480                                 instance->reg_set) & MFI_STATE_MASK;
3481
3482                 if (fw_state != MFI_STATE_FAULT) {
3483                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
3484                                                 fw_state);
3485                 }
3486
3487                 if ((fw_state == MFI_STATE_FAULT) &&
3488                                 (instance->disableOnlineCtrlReset == 0)) {
3489                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
3490
3491                         if ((instance->pdev->device ==
3492                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
3493                                 (instance->pdev->device ==
3494                                         PCI_DEVICE_ID_DELL_PERC5) ||
3495                                 (instance->pdev->device ==
3496                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3497
3498                                 *instance->consumer =
3499                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3500                         }
3501
3502
3503                         instance->instancet->disable_intr(instance);
3504                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3505                         instance->issuepend_done = 0;
3506
3507                         atomic_set(&instance->fw_outstanding, 0);
3508                         megasas_internal_reset_defer_cmds(instance);
3509
3510                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3511                                         fw_state, atomic_read(&instance->adprecovery));
3512
3513                         schedule_work(&instance->work_init);
3514                         return IRQ_HANDLED;
3515
3516                 } else {
3517                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3518                                 fw_state, instance->disableOnlineCtrlReset);
3519                 }
3520         }
3521
3522         tasklet_schedule(&instance->isr_tasklet);
3523         return IRQ_HANDLED;
3524 }
3525 /**
3526  * megasas_isr - isr entry point
3527  */
3528 static irqreturn_t megasas_isr(int irq, void *devp)
3529 {
3530         struct megasas_irq_context *irq_context = devp;
3531         struct megasas_instance *instance = irq_context->instance;
3532         unsigned long flags;
3533         irqreturn_t rc;
3534
3535         if (atomic_read(&instance->fw_reset_no_pci_access))
3536                 return IRQ_HANDLED;
3537
3538         spin_lock_irqsave(&instance->hba_lock, flags);
3539         rc = megasas_deplete_reply_queue(instance, DID_OK);
3540         spin_unlock_irqrestore(&instance->hba_lock, flags);
3541
3542         return rc;
3543 }
3544
3545 /**
3546  * megasas_transition_to_ready -        Move the FW to READY state
3547  * @instance:                           Adapter soft state
3548  *
3549  * During the initialization, FW passes can potentially be in any one of
3550  * several possible states. If the FW in operational, waiting-for-handshake
3551  * states, driver must take steps to bring it to ready state. Otherwise, it
3552  * has to wait for the ready state.
3553  */
3554 int
3555 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3556 {
3557         int i;
3558         u8 max_wait;
3559         u32 fw_state;
3560         u32 cur_state;
3561         u32 abs_state, curr_abs_state;
3562
3563         abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3564         fw_state = abs_state & MFI_STATE_MASK;
3565
3566         if (fw_state != MFI_STATE_READY)
3567                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3568                        " state\n");
3569
3570         while (fw_state != MFI_STATE_READY) {
3571
3572                 switch (fw_state) {
3573
3574                 case MFI_STATE_FAULT:
3575                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3576                         if (ocr) {
3577                                 max_wait = MEGASAS_RESET_WAIT_TIME;
3578                                 cur_state = MFI_STATE_FAULT;
3579                                 break;
3580                         } else
3581                                 return -ENODEV;
3582
3583                 case MFI_STATE_WAIT_HANDSHAKE:
3584                         /*
3585                          * Set the CLR bit in inbound doorbell
3586                          */
3587                         if ((instance->pdev->device ==
3588                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3589                                 (instance->pdev->device ==
3590                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3591                                 (instance->ctrl_context))
3592                                 writel(
3593                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3594                                   &instance->reg_set->doorbell);
3595                         else
3596                                 writel(
3597                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3598                                         &instance->reg_set->inbound_doorbell);
3599
3600                         max_wait = MEGASAS_RESET_WAIT_TIME;
3601                         cur_state = MFI_STATE_WAIT_HANDSHAKE;
3602                         break;
3603
3604                 case MFI_STATE_BOOT_MESSAGE_PENDING:
3605                         if ((instance->pdev->device ==
3606                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3607                                 (instance->pdev->device ==
3608                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3609                                 (instance->ctrl_context))
3610                                 writel(MFI_INIT_HOTPLUG,
3611                                        &instance->reg_set->doorbell);
3612                         else
3613                                 writel(MFI_INIT_HOTPLUG,
3614                                         &instance->reg_set->inbound_doorbell);
3615
3616                         max_wait = MEGASAS_RESET_WAIT_TIME;
3617                         cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3618                         break;
3619
3620                 case MFI_STATE_OPERATIONAL:
3621                         /*
3622                          * Bring it to READY state; assuming max wait 10 secs
3623                          */
3624                         instance->instancet->disable_intr(instance);
3625                         if ((instance->pdev->device ==
3626                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3627                                 (instance->pdev->device ==
3628                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
3629                                 (instance->ctrl_context)) {
3630                                 writel(MFI_RESET_FLAGS,
3631                                         &instance->reg_set->doorbell);
3632
3633                                 if (instance->ctrl_context) {
3634                                         for (i = 0; i < (10 * 1000); i += 20) {
3635                                                 if (readl(
3636                                                             &instance->
3637                                                             reg_set->
3638                                                             doorbell) & 1)
3639                                                         msleep(20);
3640                                                 else
3641                                                         break;
3642                                         }
3643                                 }
3644                         } else
3645                                 writel(MFI_RESET_FLAGS,
3646                                         &instance->reg_set->inbound_doorbell);
3647
3648                         max_wait = MEGASAS_RESET_WAIT_TIME;
3649                         cur_state = MFI_STATE_OPERATIONAL;
3650                         break;
3651
3652                 case MFI_STATE_UNDEFINED:
3653                         /*
3654                          * This state should not last for more than 2 seconds
3655                          */
3656                         max_wait = MEGASAS_RESET_WAIT_TIME;
3657                         cur_state = MFI_STATE_UNDEFINED;
3658                         break;
3659
3660                 case MFI_STATE_BB_INIT:
3661                         max_wait = MEGASAS_RESET_WAIT_TIME;
3662                         cur_state = MFI_STATE_BB_INIT;
3663                         break;
3664
3665                 case MFI_STATE_FW_INIT:
3666                         max_wait = MEGASAS_RESET_WAIT_TIME;
3667                         cur_state = MFI_STATE_FW_INIT;
3668                         break;
3669
3670                 case MFI_STATE_FW_INIT_2:
3671                         max_wait = MEGASAS_RESET_WAIT_TIME;
3672                         cur_state = MFI_STATE_FW_INIT_2;
3673                         break;
3674
3675                 case MFI_STATE_DEVICE_SCAN:
3676                         max_wait = MEGASAS_RESET_WAIT_TIME;
3677                         cur_state = MFI_STATE_DEVICE_SCAN;
3678                         break;
3679
3680                 case MFI_STATE_FLUSH_CACHE:
3681                         max_wait = MEGASAS_RESET_WAIT_TIME;
3682                         cur_state = MFI_STATE_FLUSH_CACHE;
3683                         break;
3684
3685                 default:
3686                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3687                                fw_state);
3688                         return -ENODEV;
3689                 }
3690
3691                 /*
3692                  * The cur_state should not last for more than max_wait secs
3693                  */
3694                 for (i = 0; i < (max_wait * 1000); i++) {
3695                         curr_abs_state = instance->instancet->
3696                                 read_fw_status_reg(instance->reg_set);
3697
3698                         if (abs_state == curr_abs_state) {
3699                                 msleep(1);
3700                         } else
3701                                 break;
3702                 }
3703
3704                 /*
3705                  * Return error if fw_state hasn't changed after max_wait
3706                  */
3707                 if (curr_abs_state == abs_state) {
3708                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3709                                "in %d secs\n", fw_state, max_wait);
3710                         return -ENODEV;
3711                 }
3712
3713                 abs_state = curr_abs_state;
3714                 fw_state = curr_abs_state & MFI_STATE_MASK;
3715         }
3716         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3717
3718         return 0;
3719 }
3720
3721 /**
3722  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
3723  * @instance:                           Adapter soft state
3724  */
3725 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3726 {
3727         int i;
3728         u32 max_cmd = instance->max_mfi_cmds;
3729         struct megasas_cmd *cmd;
3730
3731         if (!instance->frame_dma_pool)
3732                 return;
3733
3734         /*
3735          * Return all frames to pool
3736          */
3737         for (i = 0; i < max_cmd; i++) {
3738
3739                 cmd = instance->cmd_list[i];
3740
3741                 if (cmd->frame)
3742                         pci_pool_free(instance->frame_dma_pool, cmd->frame,
3743                                       cmd->frame_phys_addr);
3744
3745                 if (cmd->sense)
3746                         pci_pool_free(instance->sense_dma_pool, cmd->sense,
3747                                       cmd->sense_phys_addr);
3748         }
3749
3750         /*
3751          * Now destroy the pool itself
3752          */
3753         pci_pool_destroy(instance->frame_dma_pool);
3754         pci_pool_destroy(instance->sense_dma_pool);
3755
3756         instance->frame_dma_pool = NULL;
3757         instance->sense_dma_pool = NULL;
3758 }
3759
3760 /**
3761  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
3762  * @instance:                   Adapter soft state
3763  *
3764  * Each command packet has an embedded DMA memory buffer that is used for
3765  * filling MFI frame and the SG list that immediately follows the frame. This
3766  * function creates those DMA memory buffers for each command packet by using
3767  * PCI pool facility.
3768  */
3769 static int megasas_create_frame_pool(struct megasas_instance *instance)
3770 {
3771         int i;
3772         u32 max_cmd;
3773         u32 sge_sz;
3774         u32 total_sz;
3775         u32 frame_count;
3776         struct megasas_cmd *cmd;
3777
3778         max_cmd = instance->max_mfi_cmds;
3779
3780         /*
3781          * Size of our frame is 64 bytes for MFI frame, followed by max SG
3782          * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3783          */
3784         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3785             sizeof(struct megasas_sge32);
3786
3787         if (instance->flag_ieee)
3788                 sge_sz = sizeof(struct megasas_sge_skinny);
3789
3790         /*
3791          * For MFI controllers.
3792          * max_num_sge = 60
3793          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
3794          * Total 960 byte (15 MFI frame of 64 byte)
3795          *
3796          * Fusion adapter require only 3 extra frame.
3797          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3798          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
3799          * Total 192 byte (3 MFI frame of 64 byte)
3800          */
3801         frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3802         total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3803         /*
3804          * Use DMA pool facility provided by PCI layer
3805          */
3806         instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3807                                         instance->pdev, total_sz, 256, 0);
3808
3809         if (!instance->frame_dma_pool) {
3810                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
3811                 return -ENOMEM;
3812         }
3813
3814         instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3815                                                    instance->pdev, 128, 4, 0);
3816
3817         if (!instance->sense_dma_pool) {
3818                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
3819
3820                 pci_pool_destroy(instance->frame_dma_pool);
3821                 instance->frame_dma_pool = NULL;
3822
3823                 return -ENOMEM;
3824         }
3825
3826         /*
3827          * Allocate and attach a frame to each of the commands in cmd_list.
3828          * By making cmd->index as the context instead of the &cmd, we can
3829          * always use 32bit context regardless of the architecture
3830          */
3831         for (i = 0; i < max_cmd; i++) {
3832
3833                 cmd = instance->cmd_list[i];
3834
3835                 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3836                                             GFP_KERNEL, &cmd->frame_phys_addr);
3837
3838                 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3839                                             GFP_KERNEL, &cmd->sense_phys_addr);
3840
3841                 /*
3842                  * megasas_teardown_frame_pool() takes care of freeing
3843                  * whatever has been allocated
3844                  */
3845                 if (!cmd->frame || !cmd->sense) {
3846                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
3847                         megasas_teardown_frame_pool(instance);
3848                         return -ENOMEM;
3849                 }
3850
3851                 memset(cmd->frame, 0, total_sz);
3852                 cmd->frame->io.context = cpu_to_le32(cmd->index);
3853                 cmd->frame->io.pad_0 = 0;
3854                 if (!instance->ctrl_context && reset_devices)
3855                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3856         }
3857
3858         return 0;
3859 }
3860
3861 /**
3862  * megasas_free_cmds -  Free all the cmds in the free cmd pool
3863  * @instance:           Adapter soft state
3864  */
3865 void megasas_free_cmds(struct megasas_instance *instance)
3866 {
3867         int i;
3868
3869         /* First free the MFI frame pool */
3870         megasas_teardown_frame_pool(instance);
3871
3872         /* Free all the commands in the cmd_list */
3873         for (i = 0; i < instance->max_mfi_cmds; i++)
3874
3875                 kfree(instance->cmd_list[i]);
3876
3877         /* Free the cmd_list buffer itself */
3878         kfree(instance->cmd_list);
3879         instance->cmd_list = NULL;
3880
3881         INIT_LIST_HEAD(&instance->cmd_pool);
3882 }
3883
3884 /**
3885  * megasas_alloc_cmds - Allocates the command packets
3886  * @instance:           Adapter soft state
3887  *
3888  * Each command that is issued to the FW, whether IO commands from the OS or
3889  * internal commands like IOCTLs, are wrapped in local data structure called
3890  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3891  * the FW.
3892  *
3893  * Each frame has a 32-bit field called context (tag). This context is used
3894  * to get back the megasas_cmd from the frame when a frame gets completed in
3895  * the ISR. Typically the address of the megasas_cmd itself would be used as
3896  * the context. But we wanted to keep the differences between 32 and 64 bit
3897  * systems to the mininum. We always use 32 bit integers for the context. In
3898  * this driver, the 32 bit values are the indices into an array cmd_list.
3899  * This array is used only to look up the megasas_cmd given the context. The
3900  * free commands themselves are maintained in a linked list called cmd_pool.
3901  */
3902 int megasas_alloc_cmds(struct megasas_instance *instance)
3903 {
3904         int i;
3905         int j;
3906         u32 max_cmd;
3907         struct megasas_cmd *cmd;
3908         struct fusion_context *fusion;
3909
3910         fusion = instance->ctrl_context;
3911         max_cmd = instance->max_mfi_cmds;
3912
3913         /*
3914          * instance->cmd_list is an array of struct megasas_cmd pointers.
3915          * Allocate the dynamic array first and then allocate individual
3916          * commands.
3917          */
3918         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3919
3920         if (!instance->cmd_list) {
3921                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
3922                 return -ENOMEM;
3923         }
3924
3925         memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3926
3927         for (i = 0; i < max_cmd; i++) {
3928                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3929                                                 GFP_KERNEL);
3930
3931                 if (!instance->cmd_list[i]) {
3932
3933                         for (j = 0; j < i; j++)
3934                                 kfree(instance->cmd_list[j]);
3935
3936                         kfree(instance->cmd_list);
3937                         instance->cmd_list = NULL;
3938
3939                         return -ENOMEM;
3940                 }
3941         }
3942
3943         for (i = 0; i < max_cmd; i++) {
3944                 cmd = instance->cmd_list[i];
3945                 memset(cmd, 0, sizeof(struct megasas_cmd));
3946                 cmd->index = i;
3947                 cmd->scmd = NULL;
3948                 cmd->instance = instance;
3949
3950                 list_add_tail(&cmd->list, &instance->cmd_pool);
3951         }
3952
3953         /*
3954          * Create a frame pool and assign one frame to each cmd
3955          */
3956         if (megasas_create_frame_pool(instance)) {
3957                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
3958                 megasas_free_cmds(instance);
3959         }
3960
3961         return 0;
3962 }
3963
3964 /*
3965  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
3966  * @instance:                           Adapter soft state
3967  *
3968  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
3969  * or FW is not under OCR.
3970  */
3971 inline int
3972 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
3973
3974         if (!instance->ctrl_context)
3975                 return KILL_ADAPTER;
3976         else if (instance->unload ||
3977                         test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
3978                 return IGNORE_TIMEOUT;
3979         else
3980                 return INITIATE_OCR;
3981 }
3982
3983 static int
3984 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id)
3985 {
3986         int ret;
3987         struct megasas_cmd *cmd;
3988         struct megasas_dcmd_frame *dcmd;
3989
3990         cmd = megasas_get_cmd(instance);
3991
3992         if (!cmd) {
3993                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
3994                 return -ENOMEM;
3995         }
3996
3997         dcmd = &cmd->frame->dcmd;
3998
3999         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4000         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4001
4002         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4003         dcmd->cmd = MFI_CMD_DCMD;
4004         dcmd->cmd_status = 0xFF;
4005         dcmd->sge_count = 1;
4006         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4007         dcmd->timeout = 0;
4008         dcmd->pad_0 = 0;
4009         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4010         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4011         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h);
4012         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO));
4013
4014         if (instance->ctrl_context && !instance->mask_interrupts)
4015                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4016         else
4017                 ret = megasas_issue_polled(instance, cmd);
4018
4019         switch (ret) {
4020         case DCMD_SUCCESS:
4021                 instance->pd_list[device_id].interface =
4022                                 instance->pd_info->state.ddf.pdType.intf;
4023                 break;
4024
4025         case DCMD_TIMEOUT:
4026
4027                 switch (dcmd_timeout_ocr_possible(instance)) {
4028                 case INITIATE_OCR:
4029                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4030                         megasas_reset_fusion(instance->host,
4031                                 MFI_IO_TIMEOUT_OCR);
4032                         break;
4033                 case KILL_ADAPTER:
4034                         megaraid_sas_kill_hba(instance);
4035                         break;
4036                 case IGNORE_TIMEOUT:
4037                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4038                                 __func__, __LINE__);
4039                         break;
4040                 }
4041
4042                 break;
4043         }
4044
4045         if (ret != DCMD_TIMEOUT)
4046                 megasas_return_cmd(instance, cmd);
4047
4048         return ret;
4049 }
4050 /*
4051  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4052  * @instance:                           Adapter soft state
4053  * @pd_list:                            pd_list structure
4054  *
4055  * Issues an internal command (DCMD) to get the FW's controller PD
4056  * list structure.  This information is mainly used to find out SYSTEM
4057  * supported by the FW.
4058  */
4059 static int
4060 megasas_get_pd_list(struct megasas_instance *instance)
4061 {
4062         int ret = 0, pd_index = 0;
4063         struct megasas_cmd *cmd;
4064         struct megasas_dcmd_frame *dcmd;
4065         struct MR_PD_LIST *ci;
4066         struct MR_PD_ADDRESS *pd_addr;
4067         dma_addr_t ci_h = 0;
4068
4069         if (instance->pd_list_not_supported) {
4070                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4071                 "not supported by firmware\n");
4072                 return ret;
4073         }
4074
4075         cmd = megasas_get_cmd(instance);
4076
4077         if (!cmd) {
4078                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4079                 return -ENOMEM;
4080         }
4081
4082         dcmd = &cmd->frame->dcmd;
4083
4084         ci = pci_alloc_consistent(instance->pdev,
4085                   MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
4086
4087         if (!ci) {
4088                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n");
4089                 megasas_return_cmd(instance, cmd);
4090                 return -ENOMEM;
4091         }
4092
4093         memset(ci, 0, sizeof(*ci));
4094         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4095
4096         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4097         dcmd->mbox.b[1] = 0;
4098         dcmd->cmd = MFI_CMD_DCMD;
4099         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4100         dcmd->sge_count = 1;
4101         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4102         dcmd->timeout = 0;
4103         dcmd->pad_0 = 0;
4104         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4105         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4106         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4107         dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4108
4109         if (instance->ctrl_context && !instance->mask_interrupts)
4110                 ret = megasas_issue_blocked_cmd(instance, cmd,
4111                         MFI_IO_TIMEOUT_SECS);
4112         else
4113                 ret = megasas_issue_polled(instance, cmd);
4114
4115         switch (ret) {
4116         case DCMD_FAILED:
4117                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4118                         "failed/not supported by firmware\n");
4119
4120                 if (instance->ctrl_context)
4121                         megaraid_sas_kill_hba(instance);
4122                 else
4123                         instance->pd_list_not_supported = 1;
4124                 break;
4125         case DCMD_TIMEOUT:
4126
4127                 switch (dcmd_timeout_ocr_possible(instance)) {
4128                 case INITIATE_OCR:
4129                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4130                         /*
4131                          * DCMD failed from AEN path.
4132                          * AEN path already hold reset_mutex to avoid PCI access
4133                          * while OCR is in progress.
4134                          */
4135                         mutex_unlock(&instance->reset_mutex);
4136                         megasas_reset_fusion(instance->host,
4137                                                 MFI_IO_TIMEOUT_OCR);
4138                         mutex_lock(&instance->reset_mutex);
4139                         break;
4140                 case KILL_ADAPTER:
4141                         megaraid_sas_kill_hba(instance);
4142                         break;
4143                 case IGNORE_TIMEOUT:
4144                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4145                                 __func__, __LINE__);
4146                         break;
4147                 }
4148
4149                 break;
4150
4151         case DCMD_SUCCESS:
4152                 pd_addr = ci->addr;
4153
4154                 if ((le32_to_cpu(ci->count) >
4155                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4156                         break;
4157
4158                 memset(instance->local_pd_list, 0,
4159                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4160
4161                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4162                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4163                                         le16_to_cpu(pd_addr->deviceId);
4164                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4165                                         pd_addr->scsiDevType;
4166                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4167                                         MR_PD_STATE_SYSTEM;
4168                         pd_addr++;
4169                 }
4170
4171                 memcpy(instance->pd_list, instance->local_pd_list,
4172                         sizeof(instance->pd_list));
4173                 break;
4174
4175         }
4176
4177         pci_free_consistent(instance->pdev,
4178                                 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
4179                                 ci, ci_h);
4180
4181         if (ret != DCMD_TIMEOUT)
4182                 megasas_return_cmd(instance, cmd);
4183
4184         return ret;
4185 }
4186
4187 /*
4188  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4189  * @instance:                           Adapter soft state
4190  * @ld_list:                            ld_list structure
4191  *
4192  * Issues an internal command (DCMD) to get the FW's controller PD
4193  * list structure.  This information is mainly used to find out SYSTEM
4194  * supported by the FW.
4195  */
4196 static int
4197 megasas_get_ld_list(struct megasas_instance *instance)
4198 {
4199         int ret = 0, ld_index = 0, ids = 0;
4200         struct megasas_cmd *cmd;
4201         struct megasas_dcmd_frame *dcmd;
4202         struct MR_LD_LIST *ci;
4203         dma_addr_t ci_h = 0;
4204         u32 ld_count;
4205
4206         cmd = megasas_get_cmd(instance);
4207
4208         if (!cmd) {
4209                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4210                 return -ENOMEM;
4211         }
4212
4213         dcmd = &cmd->frame->dcmd;
4214
4215         ci = pci_alloc_consistent(instance->pdev,
4216                                 sizeof(struct MR_LD_LIST),
4217                                 &ci_h);
4218
4219         if (!ci) {
4220                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n");
4221                 megasas_return_cmd(instance, cmd);
4222                 return -ENOMEM;
4223         }
4224
4225         memset(ci, 0, sizeof(*ci));
4226         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4227
4228         if (instance->supportmax256vd)
4229                 dcmd->mbox.b[0] = 1;
4230         dcmd->cmd = MFI_CMD_DCMD;
4231         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4232         dcmd->sge_count = 1;
4233         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4234         dcmd->timeout = 0;
4235         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4236         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4237         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4238         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
4239         dcmd->pad_0  = 0;
4240
4241         if (instance->ctrl_context && !instance->mask_interrupts)
4242                 ret = megasas_issue_blocked_cmd(instance, cmd,
4243                         MFI_IO_TIMEOUT_SECS);
4244         else
4245                 ret = megasas_issue_polled(instance, cmd);
4246
4247         ld_count = le32_to_cpu(ci->ldCount);
4248
4249         switch (ret) {
4250         case DCMD_FAILED:
4251                 megaraid_sas_kill_hba(instance);
4252                 break;
4253         case DCMD_TIMEOUT:
4254
4255                 switch (dcmd_timeout_ocr_possible(instance)) {
4256                 case INITIATE_OCR:
4257                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4258                         /*
4259                          * DCMD failed from AEN path.
4260                          * AEN path already hold reset_mutex to avoid PCI access
4261                          * while OCR is in progress.
4262                          */
4263                         mutex_unlock(&instance->reset_mutex);
4264                         megasas_reset_fusion(instance->host,
4265                                                 MFI_IO_TIMEOUT_OCR);
4266                         mutex_lock(&instance->reset_mutex);
4267                         break;
4268                 case KILL_ADAPTER:
4269                         megaraid_sas_kill_hba(instance);
4270                         break;
4271                 case IGNORE_TIMEOUT:
4272                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4273                                 __func__, __LINE__);
4274                         break;
4275                 }
4276
4277                 break;
4278
4279         case DCMD_SUCCESS:
4280                 if (ld_count > instance->fw_supported_vd_count)
4281                         break;
4282
4283                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4284
4285                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4286                         if (ci->ldList[ld_index].state != 0) {
4287                                 ids = ci->ldList[ld_index].ref.targetId;
4288                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4289                         }
4290                 }
4291
4292                 break;
4293         }
4294
4295         pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h);
4296
4297         if (ret != DCMD_TIMEOUT)
4298                 megasas_return_cmd(instance, cmd);
4299
4300         return ret;
4301 }
4302
4303 /**
4304  * megasas_ld_list_query -      Returns FW's ld_list structure
4305  * @instance:                           Adapter soft state
4306  * @ld_list:                            ld_list structure
4307  *
4308  * Issues an internal command (DCMD) to get the FW's controller PD
4309  * list structure.  This information is mainly used to find out SYSTEM
4310  * supported by the FW.
4311  */
4312 static int
4313 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4314 {
4315         int ret = 0, ld_index = 0, ids = 0;
4316         struct megasas_cmd *cmd;
4317         struct megasas_dcmd_frame *dcmd;
4318         struct MR_LD_TARGETID_LIST *ci;
4319         dma_addr_t ci_h = 0;
4320         u32 tgtid_count;
4321
4322         cmd = megasas_get_cmd(instance);
4323
4324         if (!cmd) {
4325                 dev_warn(&instance->pdev->dev,
4326                          "megasas_ld_list_query: Failed to get cmd\n");
4327                 return -ENOMEM;
4328         }
4329
4330         dcmd = &cmd->frame->dcmd;
4331
4332         ci = pci_alloc_consistent(instance->pdev,
4333                                   sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
4334
4335         if (!ci) {
4336                 dev_warn(&instance->pdev->dev,
4337                          "Failed to alloc mem for ld_list_query\n");
4338                 megasas_return_cmd(instance, cmd);
4339                 return -ENOMEM;
4340         }
4341
4342         memset(ci, 0, sizeof(*ci));
4343         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4344
4345         dcmd->mbox.b[0] = query_type;
4346         if (instance->supportmax256vd)
4347                 dcmd->mbox.b[2] = 1;
4348
4349         dcmd->cmd = MFI_CMD_DCMD;
4350         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4351         dcmd->sge_count = 1;
4352         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4353         dcmd->timeout = 0;
4354         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4355         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4356         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4357         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4358         dcmd->pad_0  = 0;
4359
4360         if (instance->ctrl_context && !instance->mask_interrupts)
4361                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4362         else
4363                 ret = megasas_issue_polled(instance, cmd);
4364
4365         switch (ret) {
4366         case DCMD_FAILED:
4367                 dev_info(&instance->pdev->dev,
4368                         "DCMD not supported by firmware - %s %d\n",
4369                                 __func__, __LINE__);
4370                 ret = megasas_get_ld_list(instance);
4371                 break;
4372         case DCMD_TIMEOUT:
4373                 switch (dcmd_timeout_ocr_possible(instance)) {
4374                 case INITIATE_OCR:
4375                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4376                         /*
4377                          * DCMD failed from AEN path.
4378                          * AEN path already hold reset_mutex to avoid PCI access
4379                          * while OCR is in progress.
4380                          */
4381                         mutex_unlock(&instance->reset_mutex);
4382                         megasas_reset_fusion(instance->host,
4383                                                 MFI_IO_TIMEOUT_OCR);
4384                         mutex_lock(&instance->reset_mutex);
4385                         break;
4386                 case KILL_ADAPTER:
4387                         megaraid_sas_kill_hba(instance);
4388                         break;
4389                 case IGNORE_TIMEOUT:
4390                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4391                                 __func__, __LINE__);
4392                         break;
4393                 }
4394
4395                 break;
4396         case DCMD_SUCCESS:
4397                 tgtid_count = le32_to_cpu(ci->count);
4398
4399                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4400                         break;
4401
4402                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4403                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4404                         ids = ci->targetId[ld_index];
4405                         instance->ld_ids[ids] = ci->targetId[ld_index];
4406                 }
4407
4408                 break;
4409         }
4410
4411         pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4412                     ci, ci_h);
4413
4414         if (ret != DCMD_TIMEOUT)
4415                 megasas_return_cmd(instance, cmd);
4416
4417         return ret;
4418 }
4419
4420 /*
4421  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4422  * instance                      : Controller's instance
4423 */
4424 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4425 {
4426         struct fusion_context *fusion;
4427         u32 old_map_sz;
4428         u32 new_map_sz;
4429
4430         fusion = instance->ctrl_context;
4431         /* For MFI based controllers return dummy success */
4432         if (!fusion)
4433                 return;
4434
4435         instance->supportmax256vd =
4436                 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4437         /* Below is additional check to address future FW enhancement */
4438         if (instance->ctrl_info->max_lds > 64)
4439                 instance->supportmax256vd = 1;
4440
4441         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4442                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4443         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4444                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4445         if (instance->supportmax256vd) {
4446                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4447                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4448         } else {
4449                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4450                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4451         }
4452
4453         dev_info(&instance->pdev->dev,
4454                 "firmware type\t: %s\n",
4455                 instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
4456                 "Legacy(64 VD) firmware");
4457
4458         old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4459                                 (sizeof(struct MR_LD_SPAN_MAP) *
4460                                 (instance->fw_supported_vd_count - 1));
4461         new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4462         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4463                                 (sizeof(struct MR_LD_SPAN_MAP) *
4464                                 (instance->drv_supported_vd_count - 1));
4465
4466         fusion->max_map_sz = max(old_map_sz, new_map_sz);
4467
4468
4469         if (instance->supportmax256vd)
4470                 fusion->current_map_sz = new_map_sz;
4471         else
4472                 fusion->current_map_sz = old_map_sz;
4473 }
4474
4475 /**
4476  * megasas_get_controller_info -        Returns FW's controller structure
4477  * @instance:                           Adapter soft state
4478  *
4479  * Issues an internal command (DCMD) to get the FW's controller structure.
4480  * This information is mainly used to find out the maximum IO transfer per
4481  * command supported by the FW.
4482  */
4483 int
4484 megasas_get_ctrl_info(struct megasas_instance *instance)
4485 {
4486         int ret = 0;
4487         struct megasas_cmd *cmd;
4488         struct megasas_dcmd_frame *dcmd;
4489         struct megasas_ctrl_info *ci;
4490         struct megasas_ctrl_info *ctrl_info;
4491         dma_addr_t ci_h = 0;
4492
4493         ctrl_info = instance->ctrl_info;
4494
4495         cmd = megasas_get_cmd(instance);
4496
4497         if (!cmd) {
4498                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4499                 return -ENOMEM;
4500         }
4501
4502         dcmd = &cmd->frame->dcmd;
4503
4504         ci = pci_alloc_consistent(instance->pdev,
4505                                   sizeof(struct megasas_ctrl_info), &ci_h);
4506
4507         if (!ci) {
4508                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n");
4509                 megasas_return_cmd(instance, cmd);
4510                 return -ENOMEM;
4511         }
4512
4513         memset(ci, 0, sizeof(*ci));
4514         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4515
4516         dcmd->cmd = MFI_CMD_DCMD;
4517         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4518         dcmd->sge_count = 1;
4519         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4520         dcmd->timeout = 0;
4521         dcmd->pad_0 = 0;
4522         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4523         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4524         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4525         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4526         dcmd->mbox.b[0] = 1;
4527
4528         if (instance->ctrl_context && !instance->mask_interrupts)
4529                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4530         else
4531                 ret = megasas_issue_polled(instance, cmd);
4532
4533         switch (ret) {
4534         case DCMD_SUCCESS:
4535                 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4536                 /* Save required controller information in
4537                  * CPU endianness format.
4538                  */
4539                 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4540                 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4541                 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4542
4543                 /* Update the latest Ext VD info.
4544                  * From Init path, store current firmware details.
4545                  * From OCR path, detect any firmware properties changes.
4546                  * in case of Firmware upgrade without system reboot.
4547                  */
4548                 megasas_update_ext_vd_details(instance);
4549                 instance->use_seqnum_jbod_fp =
4550                         ctrl_info->adapterOperations3.useSeqNumJbodFP;
4551
4552                 /*Check whether controller is iMR or MR */
4553                 instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
4554                 dev_info(&instance->pdev->dev,
4555                         "controller type\t: %s(%dMB)\n",
4556                         instance->is_imr ? "iMR" : "MR",
4557                         le16_to_cpu(ctrl_info->memory_size));
4558
4559                 instance->disableOnlineCtrlReset =
4560                         ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4561                 instance->secure_jbod_support =
4562                         ctrl_info->adapterOperations3.supportSecurityonJBOD;
4563                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4564                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4565                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4566                         instance->secure_jbod_support ? "Yes" : "No");
4567                 break;
4568
4569         case DCMD_TIMEOUT:
4570                 switch (dcmd_timeout_ocr_possible(instance)) {
4571                 case INITIATE_OCR:
4572                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4573                         megasas_reset_fusion(instance->host,
4574                                 MFI_IO_TIMEOUT_OCR);
4575                         break;
4576                 case KILL_ADAPTER:
4577                         megaraid_sas_kill_hba(instance);
4578                         break;
4579                 case IGNORE_TIMEOUT:
4580                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4581                                 __func__, __LINE__);
4582                         break;
4583                 }
4584         case DCMD_FAILED:
4585                 megaraid_sas_kill_hba(instance);
4586                 break;
4587
4588         }
4589
4590         pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4591                             ci, ci_h);
4592
4593         megasas_return_cmd(instance, cmd);
4594
4595
4596         return ret;
4597 }
4598
4599 /*
4600  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
4601  *                                      to firmware
4602  *
4603  * @instance:                           Adapter soft state
4604  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
4605                                         MR_CRASH_BUF_TURN_OFF = 0
4606                                         MR_CRASH_BUF_TURN_ON = 1
4607  * @return 0 on success non-zero on failure.
4608  * Issues an internal command (DCMD) to set parameters for crash dump feature.
4609  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4610  * that driver supports crash dump feature. This DCMD will be sent only if
4611  * crash dump feature is supported by the FW.
4612  *
4613  */
4614 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4615         u8 crash_buf_state)
4616 {
4617         int ret = 0;
4618         struct megasas_cmd *cmd;
4619         struct megasas_dcmd_frame *dcmd;
4620
4621         cmd = megasas_get_cmd(instance);
4622
4623         if (!cmd) {
4624                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4625                 return -ENOMEM;
4626         }
4627
4628
4629         dcmd = &cmd->frame->dcmd;
4630
4631         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4632         dcmd->mbox.b[0] = crash_buf_state;
4633         dcmd->cmd = MFI_CMD_DCMD;
4634         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4635         dcmd->sge_count = 1;
4636         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4637         dcmd->timeout = 0;
4638         dcmd->pad_0 = 0;
4639         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4640         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4641         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4642         dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4643
4644         if (instance->ctrl_context && !instance->mask_interrupts)
4645                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4646         else
4647                 ret = megasas_issue_polled(instance, cmd);
4648
4649         if (ret == DCMD_TIMEOUT) {
4650                 switch (dcmd_timeout_ocr_possible(instance)) {
4651                 case INITIATE_OCR:
4652                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4653                         megasas_reset_fusion(instance->host,
4654                                         MFI_IO_TIMEOUT_OCR);
4655                         break;
4656                 case KILL_ADAPTER:
4657                         megaraid_sas_kill_hba(instance);
4658                         break;
4659                 case IGNORE_TIMEOUT:
4660                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4661                                 __func__, __LINE__);
4662                         break;
4663                 }
4664         } else
4665                 megasas_return_cmd(instance, cmd);
4666
4667         return ret;
4668 }
4669
4670 /**
4671  * megasas_issue_init_mfi -     Initializes the FW
4672  * @instance:           Adapter soft state
4673  *
4674  * Issues the INIT MFI cmd
4675  */
4676 static int
4677 megasas_issue_init_mfi(struct megasas_instance *instance)
4678 {
4679         __le32 context;
4680         struct megasas_cmd *cmd;
4681         struct megasas_init_frame *init_frame;
4682         struct megasas_init_queue_info *initq_info;
4683         dma_addr_t init_frame_h;
4684         dma_addr_t initq_info_h;
4685
4686         /*
4687          * Prepare a init frame. Note the init frame points to queue info
4688          * structure. Each frame has SGL allocated after first 64 bytes. For
4689          * this frame - since we don't need any SGL - we use SGL's space as
4690          * queue info structure
4691          *
4692          * We will not get a NULL command below. We just created the pool.
4693          */
4694         cmd = megasas_get_cmd(instance);
4695
4696         init_frame = (struct megasas_init_frame *)cmd->frame;
4697         initq_info = (struct megasas_init_queue_info *)
4698                 ((unsigned long)init_frame + 64);
4699
4700         init_frame_h = cmd->frame_phys_addr;
4701         initq_info_h = init_frame_h + 64;
4702
4703         context = init_frame->context;
4704         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4705         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4706         init_frame->context = context;
4707
4708         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4709         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4710
4711         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4712         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4713
4714         init_frame->cmd = MFI_CMD_INIT;
4715         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4716         init_frame->queue_info_new_phys_addr_lo =
4717                 cpu_to_le32(lower_32_bits(initq_info_h));
4718         init_frame->queue_info_new_phys_addr_hi =
4719                 cpu_to_le32(upper_32_bits(initq_info_h));
4720
4721         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4722
4723         /*
4724          * disable the intr before firing the init frame to FW
4725          */
4726         instance->instancet->disable_intr(instance);
4727
4728         /*
4729          * Issue the init frame in polled mode
4730          */
4731
4732         if (megasas_issue_polled(instance, cmd)) {
4733                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4734                 megasas_return_cmd(instance, cmd);
4735                 goto fail_fw_init;
4736         }
4737
4738         megasas_return_cmd(instance, cmd);
4739
4740         return 0;
4741
4742 fail_fw_init:
4743         return -EINVAL;
4744 }
4745
4746 static u32
4747 megasas_init_adapter_mfi(struct megasas_instance *instance)
4748 {
4749         struct megasas_register_set __iomem *reg_set;
4750         u32 context_sz;
4751         u32 reply_q_sz;
4752
4753         reg_set = instance->reg_set;
4754
4755         /*
4756          * Get various operational parameters from status register
4757          */
4758         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4759         /*
4760          * Reduce the max supported cmds by 1. This is to ensure that the
4761          * reply_q_sz (1 more than the max cmd that driver may send)
4762          * does not exceed max cmds that the FW can support
4763          */
4764         instance->max_fw_cmds = instance->max_fw_cmds-1;
4765         instance->max_mfi_cmds = instance->max_fw_cmds;
4766         instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4767                                         0x10;
4768         /*
4769          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4770          * are reserved for IOCTL + driver's internal DCMDs.
4771          */
4772         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4773                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4774                 instance->max_scsi_cmds = (instance->max_fw_cmds -
4775                         MEGASAS_SKINNY_INT_CMDS);
4776                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4777         } else {
4778                 instance->max_scsi_cmds = (instance->max_fw_cmds -
4779                         MEGASAS_INT_CMDS);
4780                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4781         }
4782
4783         instance->cur_can_queue = instance->max_scsi_cmds;
4784         /*
4785          * Create a pool of commands
4786          */
4787         if (megasas_alloc_cmds(instance))
4788                 goto fail_alloc_cmds;
4789
4790         /*
4791          * Allocate memory for reply queue. Length of reply queue should
4792          * be _one_ more than the maximum commands handled by the firmware.
4793          *
4794          * Note: When FW completes commands, it places corresponding contex
4795          * values in this circular reply queue. This circular queue is a fairly
4796          * typical producer-consumer queue. FW is the producer (of completed
4797          * commands) and the driver is the consumer.
4798          */
4799         context_sz = sizeof(u32);
4800         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4801
4802         instance->reply_queue = pci_alloc_consistent(instance->pdev,
4803                                                      reply_q_sz,
4804                                                      &instance->reply_queue_h);
4805
4806         if (!instance->reply_queue) {
4807                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
4808                 goto fail_reply_queue;
4809         }
4810
4811         if (megasas_issue_init_mfi(instance))
4812                 goto fail_fw_init;
4813
4814         if (megasas_get_ctrl_info(instance)) {
4815                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4816                         "Fail from %s %d\n", instance->unique_id,
4817                         __func__, __LINE__);
4818                 goto fail_fw_init;
4819         }
4820
4821         instance->fw_support_ieee = 0;
4822         instance->fw_support_ieee =
4823                 (instance->instancet->read_fw_status_reg(reg_set) &
4824                 0x04000000);
4825
4826         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
4827                         instance->fw_support_ieee);
4828
4829         if (instance->fw_support_ieee)
4830                 instance->flag_ieee = 1;
4831
4832         return 0;
4833
4834 fail_fw_init:
4835
4836         pci_free_consistent(instance->pdev, reply_q_sz,
4837                             instance->reply_queue, instance->reply_queue_h);
4838 fail_reply_queue:
4839         megasas_free_cmds(instance);
4840
4841 fail_alloc_cmds:
4842         return 1;
4843 }
4844
4845 /*
4846  * megasas_setup_irqs_msix -            register legacy interrupts.
4847  * @instance:                           Adapter soft state
4848  *
4849  * Do not enable interrupt, only setup ISRs.
4850  *
4851  * Return 0 on success.
4852  */
4853 static int
4854 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
4855 {
4856         struct pci_dev *pdev;
4857
4858         pdev = instance->pdev;
4859         instance->irq_context[0].instance = instance;
4860         instance->irq_context[0].MSIxIndex = 0;
4861         if (request_irq(pdev->irq, instance->instancet->service_isr,
4862                 IRQF_SHARED, "megasas", &instance->irq_context[0])) {
4863                 dev_err(&instance->pdev->dev,
4864                                 "Failed to register IRQ from %s %d\n",
4865                                 __func__, __LINE__);
4866                 return -1;
4867         }
4868         return 0;
4869 }
4870
4871 /**
4872  * megasas_setup_irqs_msix -            register MSI-x interrupts.
4873  * @instance:                           Adapter soft state
4874  * @is_probe:                           Driver probe check
4875  *
4876  * Do not enable interrupt, only setup ISRs.
4877  *
4878  * Return 0 on success.
4879  */
4880 static int
4881 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
4882 {
4883         int i, j, cpu;
4884         struct pci_dev *pdev;
4885
4886         pdev = instance->pdev;
4887
4888         /* Try MSI-x */
4889         cpu = cpumask_first(cpu_online_mask);
4890         for (i = 0; i < instance->msix_vectors; i++) {
4891                 instance->irq_context[i].instance = instance;
4892                 instance->irq_context[i].MSIxIndex = i;
4893                 if (request_irq(instance->msixentry[i].vector,
4894                         instance->instancet->service_isr, 0, "megasas",
4895                         &instance->irq_context[i])) {
4896                         dev_err(&instance->pdev->dev,
4897                                 "Failed to register IRQ for vector %d.\n", i);
4898                         for (j = 0; j < i; j++) {
4899                                 if (smp_affinity_enable)
4900                                         irq_set_affinity_hint(
4901                                                 instance->msixentry[j].vector, NULL);
4902                                 free_irq(instance->msixentry[j].vector,
4903                                         &instance->irq_context[j]);
4904                         }
4905                         /* Retry irq register for IO_APIC*/
4906                         instance->msix_vectors = 0;
4907                         if (is_probe)
4908                                 return megasas_setup_irqs_ioapic(instance);
4909                         else
4910                                 return -1;
4911                 }
4912                 if (smp_affinity_enable) {
4913                         if (irq_set_affinity_hint(instance->msixentry[i].vector,
4914                                 get_cpu_mask(cpu)))
4915                                 dev_err(&instance->pdev->dev,
4916                                         "Failed to set affinity hint"
4917                                         " for cpu %d\n", cpu);
4918                         cpu = cpumask_next(cpu, cpu_online_mask);
4919                 }
4920         }
4921         return 0;
4922 }
4923
4924 /*
4925  * megasas_destroy_irqs-                unregister interrupts.
4926  * @instance:                           Adapter soft state
4927  * return:                              void
4928  */
4929 static void
4930 megasas_destroy_irqs(struct megasas_instance *instance) {
4931
4932         int i;
4933
4934         if (instance->msix_vectors)
4935                 for (i = 0; i < instance->msix_vectors; i++) {
4936                         if (smp_affinity_enable)
4937                                 irq_set_affinity_hint(
4938                                         instance->msixentry[i].vector, NULL);
4939                         free_irq(instance->msixentry[i].vector,
4940                                  &instance->irq_context[i]);
4941                 }
4942         else
4943                 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4944 }
4945
4946 /**
4947  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
4948  * @instance:                           Adapter soft state
4949  * @is_probe:                           Driver probe check
4950  *
4951  * Return 0 on success.
4952  */
4953 void
4954 megasas_setup_jbod_map(struct megasas_instance *instance)
4955 {
4956         int i;
4957         struct fusion_context *fusion = instance->ctrl_context;
4958         u32 pd_seq_map_sz;
4959
4960         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
4961                 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
4962
4963         if (reset_devices || !fusion ||
4964                 !instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) {
4965                 dev_info(&instance->pdev->dev,
4966                         "Jbod map is not supported %s %d\n",
4967                         __func__, __LINE__);
4968                 instance->use_seqnum_jbod_fp = false;
4969                 return;
4970         }
4971
4972         if (fusion->pd_seq_sync[0])
4973                 goto skip_alloc;
4974
4975         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
4976                 fusion->pd_seq_sync[i] = dma_alloc_coherent
4977                         (&instance->pdev->dev, pd_seq_map_sz,
4978                         &fusion->pd_seq_phys[i], GFP_KERNEL);
4979                 if (!fusion->pd_seq_sync[i]) {
4980                         dev_err(&instance->pdev->dev,
4981                                 "Failed to allocate memory from %s %d\n",
4982                                 __func__, __LINE__);
4983                         if (i == 1) {
4984                                 dma_free_coherent(&instance->pdev->dev,
4985                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
4986                                         fusion->pd_seq_phys[0]);
4987                                 fusion->pd_seq_sync[0] = NULL;
4988                         }
4989                         instance->use_seqnum_jbod_fp = false;
4990                         return;
4991                 }
4992         }
4993
4994 skip_alloc:
4995         if (!megasas_sync_pd_seq_num(instance, false) &&
4996                 !megasas_sync_pd_seq_num(instance, true))
4997                 instance->use_seqnum_jbod_fp = true;
4998         else
4999                 instance->use_seqnum_jbod_fp = false;
5000 }
5001
5002 /**
5003  * megasas_init_fw -    Initializes the FW
5004  * @instance:           Adapter soft state
5005  *
5006  * This is the main function for initializing firmware
5007  */
5008
5009 static int megasas_init_fw(struct megasas_instance *instance)
5010 {
5011         u32 max_sectors_1;
5012         u32 max_sectors_2;
5013         u32 tmp_sectors, msix_enable, scratch_pad_2;
5014         resource_size_t base_addr;
5015         struct megasas_register_set __iomem *reg_set;
5016         struct megasas_ctrl_info *ctrl_info = NULL;
5017         unsigned long bar_list;
5018         int i, loop, fw_msix_count = 0;
5019         struct IOV_111 *iovPtr;
5020         struct fusion_context *fusion;
5021
5022         fusion = instance->ctrl_context;
5023
5024         /* Find first memory bar */
5025         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5026         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5027         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5028                                          "megasas: LSI")) {
5029                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5030                 return -EBUSY;
5031         }
5032
5033         base_addr = pci_resource_start(instance->pdev, instance->bar);
5034         instance->reg_set = ioremap_nocache(base_addr, 8192);
5035
5036         if (!instance->reg_set) {
5037                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5038                 goto fail_ioremap;
5039         }
5040
5041         reg_set = instance->reg_set;
5042
5043         switch (instance->pdev->device) {
5044         case PCI_DEVICE_ID_LSI_FUSION:
5045         case PCI_DEVICE_ID_LSI_PLASMA:
5046         case PCI_DEVICE_ID_LSI_INVADER:
5047         case PCI_DEVICE_ID_LSI_FURY:
5048         case PCI_DEVICE_ID_LSI_INTRUDER:
5049         case PCI_DEVICE_ID_LSI_INTRUDER_24:
5050         case PCI_DEVICE_ID_LSI_CUTLASS_52:
5051         case PCI_DEVICE_ID_LSI_CUTLASS_53:
5052                 instance->instancet = &megasas_instance_template_fusion;
5053                 break;
5054         case PCI_DEVICE_ID_LSI_SAS1078R:
5055         case PCI_DEVICE_ID_LSI_SAS1078DE:
5056                 instance->instancet = &megasas_instance_template_ppc;
5057                 break;
5058         case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5059         case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5060                 instance->instancet = &megasas_instance_template_gen2;
5061                 break;
5062         case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5063         case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5064                 instance->instancet = &megasas_instance_template_skinny;
5065                 break;
5066         case PCI_DEVICE_ID_LSI_SAS1064R:
5067         case PCI_DEVICE_ID_DELL_PERC5:
5068         default:
5069                 instance->instancet = &megasas_instance_template_xscale;
5070                 break;
5071         }
5072
5073         if (megasas_transition_to_ready(instance, 0)) {
5074                 atomic_set(&instance->fw_reset_no_pci_access, 1);
5075                 instance->instancet->adp_reset
5076                         (instance, instance->reg_set);
5077                 atomic_set(&instance->fw_reset_no_pci_access, 0);
5078                 dev_info(&instance->pdev->dev,
5079                         "FW restarted successfully from %s!\n",
5080                         __func__);
5081
5082                 /*waitting for about 30 second before retry*/
5083                 ssleep(30);
5084
5085                 if (megasas_transition_to_ready(instance, 0))
5086                         goto fail_ready_state;
5087         }
5088
5089         /*
5090          * MSI-X host index 0 is common for all adapter.
5091          * It is used for all MPT based Adapters.
5092          */
5093         instance->reply_post_host_index_addr[0] =
5094                 (u32 __iomem *)((u8 __iomem *)instance->reg_set +
5095                 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
5096
5097         /* Check if MSI-X is supported while in ready state */
5098         msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
5099                        0x4000000) >> 0x1a;
5100         if (msix_enable && !msix_disable) {
5101                 scratch_pad_2 = readl
5102                         (&instance->reg_set->outbound_scratch_pad_2);
5103                 /* Check max MSI-X vectors */
5104                 if (fusion) {
5105                         if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/
5106                                 instance->msix_vectors = (scratch_pad_2
5107                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5108                                 fw_msix_count = instance->msix_vectors;
5109                         } else { /* Invader series supports more than 8 MSI-x vectors*/
5110                                 instance->msix_vectors = ((scratch_pad_2
5111                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5112                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5113                                 if (rdpq_enable)
5114                                         instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
5115                                                                 1 : 0;
5116                                 fw_msix_count = instance->msix_vectors;
5117                                 /* Save 1-15 reply post index address to local memory
5118                                  * Index 0 is already saved from reg offset
5119                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5120                                  */
5121                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5122                                         instance->reply_post_host_index_addr[loop] =
5123                                                 (u32 __iomem *)
5124                                                 ((u8 __iomem *)instance->reg_set +
5125                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5126                                                 + (loop * 0x10));
5127                                 }
5128                         }
5129                         if (msix_vectors)
5130                                 instance->msix_vectors = min(msix_vectors,
5131                                         instance->msix_vectors);
5132                 } else /* MFI adapters */
5133                         instance->msix_vectors = 1;
5134                 /* Don't bother allocating more MSI-X vectors than cpus */
5135                 instance->msix_vectors = min(instance->msix_vectors,
5136                                              (unsigned int)num_online_cpus());
5137                 for (i = 0; i < instance->msix_vectors; i++)
5138                         instance->msixentry[i].entry = i;
5139                 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
5140                                           1, instance->msix_vectors);
5141                 if (i > 0)
5142                         instance->msix_vectors = i;
5143                 else
5144                         instance->msix_vectors = 0;
5145         }
5146
5147         dev_info(&instance->pdev->dev,
5148                 "firmware supports msix\t: (%d)", fw_msix_count);
5149         dev_info(&instance->pdev->dev,
5150                 "current msix/online cpus\t: (%d/%d)\n",
5151                 instance->msix_vectors, (unsigned int)num_online_cpus());
5152         dev_info(&instance->pdev->dev,
5153                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5154
5155         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5156                 (unsigned long)instance);
5157
5158         if (instance->msix_vectors ?
5159                 megasas_setup_irqs_msix(instance, 1) :
5160                 megasas_setup_irqs_ioapic(instance))
5161                 goto fail_setup_irqs;
5162
5163         instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
5164                                 GFP_KERNEL);
5165         if (instance->ctrl_info == NULL)
5166                 goto fail_init_adapter;
5167
5168         /*
5169          * Below are default value for legacy Firmware.
5170          * non-fusion based controllers
5171          */
5172         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5173         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5174         /* Get operational params, sge flags, send init cmd to controller */
5175         if (instance->instancet->init_adapter(instance))
5176                 goto fail_init_adapter;
5177
5178
5179         instance->instancet->enable_intr(instance);
5180
5181         dev_info(&instance->pdev->dev, "INIT adapter done\n");
5182
5183         megasas_setup_jbod_map(instance);
5184
5185         /** for passthrough
5186          * the following function will get the PD LIST.
5187          */
5188         memset(instance->pd_list, 0,
5189                 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5190         if (megasas_get_pd_list(instance) < 0) {
5191                 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5192                 goto fail_get_pd_list;
5193         }
5194
5195         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5196         if (megasas_ld_list_query(instance,
5197                                   MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5198                 megasas_get_ld_list(instance);
5199
5200         /*
5201          * Compute the max allowed sectors per IO: The controller info has two
5202          * limits on max sectors. Driver should use the minimum of these two.
5203          *
5204          * 1 << stripe_sz_ops.min = max sectors per strip
5205          *
5206          * Note that older firmwares ( < FW ver 30) didn't report information
5207          * to calculate max_sectors_1. So the number ended up as zero always.
5208          */
5209         tmp_sectors = 0;
5210         ctrl_info = instance->ctrl_info;
5211
5212         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
5213                 le16_to_cpu(ctrl_info->max_strips_per_io);
5214         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5215
5216         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5217
5218         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
5219         instance->passive = ctrl_info->cluster.passive;
5220         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
5221         instance->UnevenSpanSupport =
5222                 ctrl_info->adapterOperations2.supportUnevenSpans;
5223         if (instance->UnevenSpanSupport) {
5224                 struct fusion_context *fusion = instance->ctrl_context;
5225                 if (MR_ValidateMapInfo(instance))
5226                         fusion->fast_path_io = 1;
5227                 else
5228                         fusion->fast_path_io = 0;
5229
5230         }
5231         if (ctrl_info->host_interface.SRIOV) {
5232                 instance->requestorId = ctrl_info->iov.requestorId;
5233                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
5234                         if (!ctrl_info->adapterOperations2.activePassive)
5235                             instance->PlasmaFW111 = 1;
5236
5237                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
5238                             instance->PlasmaFW111 ? "1.11" : "new");
5239
5240                         if (instance->PlasmaFW111) {
5241                             iovPtr = (struct IOV_111 *)
5242                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
5243                             instance->requestorId = iovPtr->requestorId;
5244                         }
5245                 }
5246                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
5247                         instance->requestorId);
5248         }
5249
5250         instance->crash_dump_fw_support =
5251                 ctrl_info->adapterOperations3.supportCrashDump;
5252         instance->crash_dump_drv_support =
5253                 (instance->crash_dump_fw_support &&
5254                 instance->crash_dump_buf);
5255         if (instance->crash_dump_drv_support)
5256                 megasas_set_crash_dump_params(instance,
5257                         MR_CRASH_BUF_TURN_OFF);
5258
5259         else {
5260                 if (instance->crash_dump_buf)
5261                         pci_free_consistent(instance->pdev,
5262                                 CRASH_DMA_BUF_SIZE,
5263                                 instance->crash_dump_buf,
5264                                 instance->crash_dump_h);
5265                 instance->crash_dump_buf = NULL;
5266         }
5267
5268
5269         dev_info(&instance->pdev->dev,
5270                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
5271                 le16_to_cpu(ctrl_info->pci.vendor_id),
5272                 le16_to_cpu(ctrl_info->pci.device_id),
5273                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
5274                 le16_to_cpu(ctrl_info->pci.sub_device_id));
5275         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
5276                 instance->UnevenSpanSupport ? "yes" : "no");
5277         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
5278                 instance->crash_dump_drv_support ? "yes" : "no");
5279         dev_info(&instance->pdev->dev, "jbod sync map           : %s\n",
5280                 instance->use_seqnum_jbod_fp ? "yes" : "no");
5281
5282
5283         instance->max_sectors_per_req = instance->max_num_sge *
5284                                                 SGE_BUFFER_SIZE / 512;
5285         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
5286                 instance->max_sectors_per_req = tmp_sectors;
5287
5288         /* Check for valid throttlequeuedepth module parameter */
5289         if (throttlequeuedepth &&
5290                         throttlequeuedepth <= instance->max_scsi_cmds)
5291                 instance->throttlequeuedepth = throttlequeuedepth;
5292         else
5293                 instance->throttlequeuedepth =
5294                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
5295
5296         if (resetwaittime > MEGASAS_RESET_WAIT_TIME)
5297                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
5298
5299         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
5300                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
5301
5302         /* Launch SR-IOV heartbeat timer */
5303         if (instance->requestorId) {
5304                 if (!megasas_sriov_start_heartbeat(instance, 1))
5305                         megasas_start_timer(instance,
5306                                             &instance->sriov_heartbeat_timer,
5307                                             megasas_sriov_heartbeat_handler,
5308                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5309                 else
5310                         instance->skip_heartbeat_timer_del = 1;
5311         }
5312
5313         return 0;
5314
5315 fail_get_pd_list:
5316         instance->instancet->disable_intr(instance);
5317 fail_init_adapter:
5318         megasas_destroy_irqs(instance);
5319 fail_setup_irqs:
5320         if (instance->msix_vectors)
5321                 pci_disable_msix(instance->pdev);
5322         instance->msix_vectors = 0;
5323 fail_ready_state:
5324         kfree(instance->ctrl_info);
5325         instance->ctrl_info = NULL;
5326         iounmap(instance->reg_set);
5327
5328       fail_ioremap:
5329         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5330
5331         return -EINVAL;
5332 }
5333
5334 /**
5335  * megasas_release_mfi -        Reverses the FW initialization
5336  * @instance:                   Adapter soft state
5337  */
5338 static void megasas_release_mfi(struct megasas_instance *instance)
5339 {
5340         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5341
5342         if (instance->reply_queue)
5343                 pci_free_consistent(instance->pdev, reply_q_sz,
5344                             instance->reply_queue, instance->reply_queue_h);
5345
5346         megasas_free_cmds(instance);
5347
5348         iounmap(instance->reg_set);
5349
5350         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5351 }
5352
5353 /**
5354  * megasas_get_seq_num -        Gets latest event sequence numbers
5355  * @instance:                   Adapter soft state
5356  * @eli:                        FW event log sequence numbers information
5357  *
5358  * FW maintains a log of all events in a non-volatile area. Upper layers would
5359  * usually find out the latest sequence number of the events, the seq number at
5360  * the boot etc. They would "read" all the events below the latest seq number
5361  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
5362  * number), they would subsribe to AEN (asynchronous event notification) and
5363  * wait for the events to happen.
5364  */
5365 static int
5366 megasas_get_seq_num(struct megasas_instance *instance,
5367                     struct megasas_evt_log_info *eli)
5368 {
5369         struct megasas_cmd *cmd;
5370         struct megasas_dcmd_frame *dcmd;
5371         struct megasas_evt_log_info *el_info;
5372         dma_addr_t el_info_h = 0;
5373
5374         cmd = megasas_get_cmd(instance);
5375
5376         if (!cmd) {
5377                 return -ENOMEM;
5378         }
5379
5380         dcmd = &cmd->frame->dcmd;
5381         el_info = pci_alloc_consistent(instance->pdev,
5382                                        sizeof(struct megasas_evt_log_info),
5383                                        &el_info_h);
5384
5385         if (!el_info) {
5386                 megasas_return_cmd(instance, cmd);
5387                 return -ENOMEM;
5388         }
5389
5390         memset(el_info, 0, sizeof(*el_info));
5391         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5392
5393         dcmd->cmd = MFI_CMD_DCMD;
5394         dcmd->cmd_status = 0x0;
5395         dcmd->sge_count = 1;
5396         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5397         dcmd->timeout = 0;
5398         dcmd->pad_0 = 0;
5399         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5400         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5401         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
5402         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5403
5404         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) ==
5405                 DCMD_SUCCESS) {
5406                 /*
5407                  * Copy the data back into callers buffer
5408                  */
5409                 eli->newest_seq_num = el_info->newest_seq_num;
5410                 eli->oldest_seq_num = el_info->oldest_seq_num;
5411                 eli->clear_seq_num = el_info->clear_seq_num;
5412                 eli->shutdown_seq_num = el_info->shutdown_seq_num;
5413                 eli->boot_seq_num = el_info->boot_seq_num;
5414         } else
5415                 dev_err(&instance->pdev->dev, "DCMD failed "
5416                         "from %s\n", __func__);
5417
5418         pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
5419                             el_info, el_info_h);
5420
5421         megasas_return_cmd(instance, cmd);
5422
5423         return 0;
5424 }
5425
5426 /**
5427  * megasas_register_aen -       Registers for asynchronous event notification
5428  * @instance:                   Adapter soft state
5429  * @seq_num:                    The starting sequence number
5430  * @class_locale:               Class of the event
5431  *
5432  * This function subscribes for AEN for events beyond the @seq_num. It requests
5433  * to be notified if and only if the event is of type @class_locale
5434  */
5435 static int
5436 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
5437                      u32 class_locale_word)
5438 {
5439         int ret_val;
5440         struct megasas_cmd *cmd;
5441         struct megasas_dcmd_frame *dcmd;
5442         union megasas_evt_class_locale curr_aen;
5443         union megasas_evt_class_locale prev_aen;
5444
5445         /*
5446          * If there an AEN pending already (aen_cmd), check if the
5447          * class_locale of that pending AEN is inclusive of the new
5448          * AEN request we currently have. If it is, then we don't have
5449          * to do anything. In other words, whichever events the current
5450          * AEN request is subscribing to, have already been subscribed
5451          * to.
5452          *
5453          * If the old_cmd is _not_ inclusive, then we have to abort
5454          * that command, form a class_locale that is superset of both
5455          * old and current and re-issue to the FW
5456          */
5457
5458         curr_aen.word = class_locale_word;
5459
5460         if (instance->aen_cmd) {
5461
5462                 prev_aen.word =
5463                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5464
5465                 /*
5466                  * A class whose enum value is smaller is inclusive of all
5467                  * higher values. If a PROGRESS (= -1) was previously
5468                  * registered, then a new registration requests for higher
5469                  * classes need not be sent to FW. They are automatically
5470                  * included.
5471                  *
5472                  * Locale numbers don't have such hierarchy. They are bitmap
5473                  * values
5474                  */
5475                 if ((prev_aen.members.class <= curr_aen.members.class) &&
5476                     !((prev_aen.members.locale & curr_aen.members.locale) ^
5477                       curr_aen.members.locale)) {
5478                         /*
5479                          * Previously issued event registration includes
5480                          * current request. Nothing to do.
5481                          */
5482                         return 0;
5483                 } else {
5484                         curr_aen.members.locale |= prev_aen.members.locale;
5485
5486                         if (prev_aen.members.class < curr_aen.members.class)
5487                                 curr_aen.members.class = prev_aen.members.class;
5488
5489                         instance->aen_cmd->abort_aen = 1;
5490                         ret_val = megasas_issue_blocked_abort_cmd(instance,
5491                                                                   instance->
5492                                                                   aen_cmd, 30);
5493
5494                         if (ret_val) {
5495                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5496                                        "previous AEN command\n");
5497                                 return ret_val;
5498                         }
5499                 }
5500         }
5501
5502         cmd = megasas_get_cmd(instance);
5503
5504         if (!cmd)
5505                 return -ENOMEM;
5506
5507         dcmd = &cmd->frame->dcmd;
5508
5509         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
5510
5511         /*
5512          * Prepare DCMD for aen registration
5513          */
5514         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5515
5516         dcmd->cmd = MFI_CMD_DCMD;
5517         dcmd->cmd_status = 0x0;
5518         dcmd->sge_count = 1;
5519         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5520         dcmd->timeout = 0;
5521         dcmd->pad_0 = 0;
5522         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
5523         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
5524         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
5525         instance->last_seq_num = seq_num;
5526         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
5527         dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
5528         dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
5529
5530         if (instance->aen_cmd != NULL) {
5531                 megasas_return_cmd(instance, cmd);
5532                 return 0;
5533         }
5534
5535         /*
5536          * Store reference to the cmd used to register for AEN. When an
5537          * application wants us to register for AEN, we have to abort this
5538          * cmd and re-register with a new EVENT LOCALE supplied by that app
5539          */
5540         instance->aen_cmd = cmd;
5541
5542         /*
5543          * Issue the aen registration frame
5544          */
5545         instance->instancet->issue_dcmd(instance, cmd);
5546
5547         return 0;
5548 }
5549
5550 /**
5551  * megasas_start_aen -  Subscribes to AEN during driver load time
5552  * @instance:           Adapter soft state
5553  */
5554 static int megasas_start_aen(struct megasas_instance *instance)
5555 {
5556         struct megasas_evt_log_info eli;
5557         union megasas_evt_class_locale class_locale;
5558
5559         /*
5560          * Get the latest sequence number from FW
5561          */
5562         memset(&eli, 0, sizeof(eli));
5563
5564         if (megasas_get_seq_num(instance, &eli))
5565                 return -1;
5566
5567         /*
5568          * Register AEN with FW for latest sequence number plus 1
5569          */
5570         class_locale.members.reserved = 0;
5571         class_locale.members.locale = MR_EVT_LOCALE_ALL;
5572         class_locale.members.class = MR_EVT_CLASS_DEBUG;
5573
5574         return megasas_register_aen(instance,
5575                         le32_to_cpu(eli.newest_seq_num) + 1,
5576                         class_locale.word);
5577 }
5578
5579 /**
5580  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
5581  * @instance:           Adapter soft state
5582  */
5583 static int megasas_io_attach(struct megasas_instance *instance)
5584 {
5585         struct Scsi_Host *host = instance->host;
5586
5587         /*
5588          * Export parameters required by SCSI mid-layer
5589          */
5590         host->irq = instance->pdev->irq;
5591         host->unique_id = instance->unique_id;
5592         host->can_queue = instance->max_scsi_cmds;
5593         host->this_id = instance->init_id;
5594         host->sg_tablesize = instance->max_num_sge;
5595
5596         if (instance->fw_support_ieee)
5597                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5598
5599         /*
5600          * Check if the module parameter value for max_sectors can be used
5601          */
5602         if (max_sectors && max_sectors < instance->max_sectors_per_req)
5603                 instance->max_sectors_per_req = max_sectors;
5604         else {
5605                 if (max_sectors) {
5606                         if (((instance->pdev->device ==
5607                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5608                                 (instance->pdev->device ==
5609                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5610                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5611                                 instance->max_sectors_per_req = max_sectors;
5612                         } else {
5613                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5614                                 "and <= %d (or < 1MB for GEN2 controller)\n",
5615                                 instance->max_sectors_per_req);
5616                         }
5617                 }
5618         }
5619
5620         host->max_sectors = instance->max_sectors_per_req;
5621         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5622         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
5623         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
5624         host->max_lun = MEGASAS_MAX_LUN;
5625         host->max_cmd_len = 16;
5626
5627         /*
5628          * Notify the mid-layer about the new controller
5629          */
5630         if (scsi_add_host(host, &instance->pdev->dev)) {
5631                 dev_err(&instance->pdev->dev,
5632                         "Failed to add host from %s %d\n",
5633                         __func__, __LINE__);
5634                 return -ENODEV;
5635         }
5636
5637         return 0;
5638 }
5639
5640 static int
5641 megasas_set_dma_mask(struct pci_dev *pdev)
5642 {
5643         /*
5644          * All our controllers are capable of performing 64-bit DMA
5645          */
5646         if (IS_DMA64) {
5647                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5648
5649                         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5650                                 goto fail_set_dma_mask;
5651                 }
5652         } else {
5653                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5654                         goto fail_set_dma_mask;
5655         }
5656         /*
5657          * Ensure that all data structures are allocated in 32-bit
5658          * memory.
5659          */
5660         if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5661                 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5662                 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5663                         && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5664                         dev_info(&pdev->dev, "set 32bit DMA mask"
5665                                 "and 32 bit consistent mask\n");
5666                 else
5667                         goto fail_set_dma_mask;
5668         }
5669
5670         return 0;
5671
5672 fail_set_dma_mask:
5673         return 1;
5674 }
5675
5676 /**
5677  * megasas_probe_one -  PCI hotplug entry point
5678  * @pdev:               PCI device structure
5679  * @id:                 PCI ids of supported hotplugged adapter
5680  */
5681 static int megasas_probe_one(struct pci_dev *pdev,
5682                              const struct pci_device_id *id)
5683 {
5684         int rval, pos;
5685         struct Scsi_Host *host;
5686         struct megasas_instance *instance;
5687         u16 control = 0;
5688         struct fusion_context *fusion = NULL;
5689
5690         /* Reset MSI-X in the kdump kernel */
5691         if (reset_devices) {
5692                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5693                 if (pos) {
5694                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5695                                              &control);
5696                         if (control & PCI_MSIX_FLAGS_ENABLE) {
5697                                 dev_info(&pdev->dev, "resetting MSI-X\n");
5698                                 pci_write_config_word(pdev,
5699                                                       pos + PCI_MSIX_FLAGS,
5700                                                       control &
5701                                                       ~PCI_MSIX_FLAGS_ENABLE);
5702                         }
5703                 }
5704         }
5705
5706         /*
5707          * PCI prepping: enable device set bus mastering and dma mask
5708          */
5709         rval = pci_enable_device_mem(pdev);
5710
5711         if (rval) {
5712                 return rval;
5713         }
5714
5715         pci_set_master(pdev);
5716
5717         if (megasas_set_dma_mask(pdev))
5718                 goto fail_set_dma_mask;
5719
5720         host = scsi_host_alloc(&megasas_template,
5721                                sizeof(struct megasas_instance));
5722
5723         if (!host) {
5724                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
5725                 goto fail_alloc_instance;
5726         }
5727
5728         instance = (struct megasas_instance *)host->hostdata;
5729         memset(instance, 0, sizeof(*instance));
5730         atomic_set(&instance->fw_reset_no_pci_access, 0);
5731         instance->pdev = pdev;
5732
5733         switch (instance->pdev->device) {
5734         case PCI_DEVICE_ID_LSI_FUSION:
5735         case PCI_DEVICE_ID_LSI_PLASMA:
5736         case PCI_DEVICE_ID_LSI_INVADER:
5737         case PCI_DEVICE_ID_LSI_FURY:
5738         case PCI_DEVICE_ID_LSI_INTRUDER:
5739         case PCI_DEVICE_ID_LSI_INTRUDER_24:
5740         case PCI_DEVICE_ID_LSI_CUTLASS_52:
5741         case PCI_DEVICE_ID_LSI_CUTLASS_53:
5742         {
5743                 instance->ctrl_context_pages =
5744                         get_order(sizeof(struct fusion_context));
5745                 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5746                                 instance->ctrl_context_pages);
5747                 if (!instance->ctrl_context) {
5748                         dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5749                                "memory for Fusion context info\n");
5750                         goto fail_alloc_dma_buf;
5751                 }
5752                 fusion = instance->ctrl_context;
5753                 memset(fusion, 0,
5754                         ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5755                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5756                         (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA))
5757                         fusion->adapter_type = THUNDERBOLT_SERIES;
5758                 else
5759                         fusion->adapter_type = INVADER_SERIES;
5760         }
5761         break;
5762         default: /* For all other supported controllers */
5763
5764                 instance->producer =
5765                         pci_alloc_consistent(pdev, sizeof(u32),
5766                                              &instance->producer_h);
5767                 instance->consumer =
5768                         pci_alloc_consistent(pdev, sizeof(u32),
5769                                              &instance->consumer_h);
5770
5771                 if (!instance->producer || !instance->consumer) {
5772                         dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5773                                "memory for producer, consumer\n");
5774                         goto fail_alloc_dma_buf;
5775                 }
5776
5777                 *instance->producer = 0;
5778                 *instance->consumer = 0;
5779                 break;
5780         }
5781
5782         /* Crash dump feature related initialisation*/
5783         instance->drv_buf_index = 0;
5784         instance->drv_buf_alloc = 0;
5785         instance->crash_dump_fw_support = 0;
5786         instance->crash_dump_app_support = 0;
5787         instance->fw_crash_state = UNAVAILABLE;
5788         spin_lock_init(&instance->crashdump_lock);
5789         instance->crash_dump_buf = NULL;
5790
5791         megasas_poll_wait_aen = 0;
5792         instance->flag_ieee = 0;
5793         instance->ev = NULL;
5794         instance->issuepend_done = 1;
5795         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5796         instance->is_imr = 0;
5797
5798         instance->evt_detail = pci_alloc_consistent(pdev,
5799                                                     sizeof(struct
5800                                                            megasas_evt_detail),
5801                                                     &instance->evt_detail_h);
5802
5803         if (!instance->evt_detail) {
5804                 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for "
5805                        "event detail structure\n");
5806                 goto fail_alloc_dma_buf;
5807         }
5808
5809         if (!reset_devices) {
5810                 instance->system_info_buf = pci_zalloc_consistent(pdev,
5811                                         sizeof(struct MR_DRV_SYSTEM_INFO),
5812                                         &instance->system_info_h);
5813                 if (!instance->system_info_buf)
5814                         dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");
5815
5816                 instance->pd_info = pci_alloc_consistent(pdev,
5817                         sizeof(struct MR_PD_INFO), &instance->pd_info_h);
5818
5819                 if (!instance->pd_info)
5820                         dev_err(&instance->pdev->dev, "Failed to alloc mem for pd_info\n");
5821
5822                 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5823                                                 CRASH_DMA_BUF_SIZE,
5824                                                 &instance->crash_dump_h);
5825                 if (!instance->crash_dump_buf)
5826                         dev_err(&pdev->dev, "Can't allocate Firmware "
5827                                 "crash dump DMA buffer\n");
5828         }
5829
5830         /*
5831          * Initialize locks and queues
5832          */
5833         INIT_LIST_HEAD(&instance->cmd_pool);
5834         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5835
5836         atomic_set(&instance->fw_outstanding,0);
5837
5838         init_waitqueue_head(&instance->int_cmd_wait_q);
5839         init_waitqueue_head(&instance->abort_cmd_wait_q);
5840
5841         spin_lock_init(&instance->mfi_pool_lock);
5842         spin_lock_init(&instance->hba_lock);
5843         spin_lock_init(&instance->completion_lock);
5844
5845         mutex_init(&instance->reset_mutex);
5846         mutex_init(&instance->hba_mutex);
5847
5848         /*
5849          * Initialize PCI related and misc parameters
5850          */
5851         instance->host = host;
5852         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5853         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5854         instance->ctrl_info = NULL;
5855
5856
5857         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5858                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5859                 instance->flag_ieee = 1;
5860
5861         megasas_dbg_lvl = 0;
5862         instance->flag = 0;
5863         instance->unload = 1;
5864         instance->last_time = 0;
5865         instance->disableOnlineCtrlReset = 1;
5866         instance->UnevenSpanSupport = 0;
5867
5868         if (instance->ctrl_context) {
5869                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5870                 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5871         } else
5872                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5873
5874         /*
5875          * Initialize MFI Firmware
5876          */
5877         if (megasas_init_fw(instance))
5878                 goto fail_init_mfi;
5879
5880         if (instance->requestorId) {
5881                 if (instance->PlasmaFW111) {
5882                         instance->vf_affiliation_111 =
5883                                 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5884                                                      &instance->vf_affiliation_111_h);
5885                         if (!instance->vf_affiliation_111)
5886                                 dev_warn(&pdev->dev, "Can't allocate "
5887                                        "memory for VF affiliation buffer\n");
5888                 } else {
5889                         instance->vf_affiliation =
5890                                 pci_alloc_consistent(pdev,
5891                                                      (MAX_LOGICAL_DRIVES + 1) *
5892                                                      sizeof(struct MR_LD_VF_AFFILIATION),
5893                                                      &instance->vf_affiliation_h);
5894                         if (!instance->vf_affiliation)
5895                                 dev_warn(&pdev->dev, "Can't allocate "
5896                                        "memory for VF affiliation buffer\n");
5897                 }
5898         }
5899
5900         /*
5901          * Store instance in PCI softstate
5902          */
5903         pci_set_drvdata(pdev, instance);
5904
5905         /*
5906          * Add this controller to megasas_mgmt_info structure so that it
5907          * can be exported to management applications
5908          */
5909         megasas_mgmt_info.count++;
5910         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5911         megasas_mgmt_info.max_index++;
5912
5913         /*
5914          * Register with SCSI mid-layer
5915          */
5916         if (megasas_io_attach(instance))
5917                 goto fail_io_attach;
5918
5919         instance->unload = 0;
5920         /*
5921          * Trigger SCSI to scan our drives
5922          */
5923         scsi_scan_host(host);
5924
5925         /*
5926          * Initiate AEN (Asynchronous Event Notification)
5927          */
5928         if (megasas_start_aen(instance)) {
5929                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
5930                 goto fail_start_aen;
5931         }
5932
5933         /* Get current SR-IOV LD/VF affiliation */
5934         if (instance->requestorId)
5935                 megasas_get_ld_vf_affiliation(instance, 1);
5936
5937         return 0;
5938
5939 fail_start_aen:
5940 fail_io_attach:
5941         megasas_mgmt_info.count--;
5942         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5943         megasas_mgmt_info.max_index--;
5944
5945         instance->instancet->disable_intr(instance);
5946         megasas_destroy_irqs(instance);
5947
5948         if (instance->ctrl_context)
5949                 megasas_release_fusion(instance);
5950         else
5951                 megasas_release_mfi(instance);
5952         if (instance->msix_vectors)
5953                 pci_disable_msix(instance->pdev);
5954 fail_init_mfi:
5955 fail_alloc_dma_buf:
5956         if (instance->evt_detail)
5957                 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5958                                     instance->evt_detail,
5959                                     instance->evt_detail_h);
5960
5961         if (instance->pd_info)
5962                 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
5963                                         instance->pd_info,
5964                                         instance->pd_info_h);
5965         if (instance->producer)
5966                 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5967                                     instance->producer_h);
5968         if (instance->consumer)
5969                 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5970                                     instance->consumer_h);
5971         scsi_host_put(host);
5972
5973 fail_alloc_instance:
5974 fail_set_dma_mask:
5975         pci_disable_device(pdev);
5976
5977         return -ENODEV;
5978 }
5979
5980 /**
5981  * megasas_flush_cache -        Requests FW to flush all its caches
5982  * @instance:                   Adapter soft state
5983  */
5984 static void megasas_flush_cache(struct megasas_instance *instance)
5985 {
5986         struct megasas_cmd *cmd;
5987         struct megasas_dcmd_frame *dcmd;
5988
5989         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
5990                 return;
5991
5992         cmd = megasas_get_cmd(instance);
5993
5994         if (!cmd)
5995                 return;
5996
5997         dcmd = &cmd->frame->dcmd;
5998
5999         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6000
6001         dcmd->cmd = MFI_CMD_DCMD;
6002         dcmd->cmd_status = 0x0;
6003         dcmd->sge_count = 0;
6004         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6005         dcmd->timeout = 0;
6006         dcmd->pad_0 = 0;
6007         dcmd->data_xfer_len = 0;
6008         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
6009         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
6010
6011         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6012                         != DCMD_SUCCESS) {
6013                 dev_err(&instance->pdev->dev,
6014                         "return from %s %d\n", __func__, __LINE__);
6015                 return;
6016         }
6017
6018         megasas_return_cmd(instance, cmd);
6019 }
6020
6021 /**
6022  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
6023  * @instance:                           Adapter soft state
6024  * @opcode:                             Shutdown/Hibernate
6025  */
6026 static void megasas_shutdown_controller(struct megasas_instance *instance,
6027                                         u32 opcode)
6028 {
6029         struct megasas_cmd *cmd;
6030         struct megasas_dcmd_frame *dcmd;
6031
6032         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6033                 return;
6034
6035         cmd = megasas_get_cmd(instance);
6036
6037         if (!cmd)
6038                 return;
6039
6040         if (instance->aen_cmd)
6041                 megasas_issue_blocked_abort_cmd(instance,
6042                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
6043         if (instance->map_update_cmd)
6044                 megasas_issue_blocked_abort_cmd(instance,
6045                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
6046         if (instance->jbod_seq_cmd)
6047                 megasas_issue_blocked_abort_cmd(instance,
6048                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
6049
6050         dcmd = &cmd->frame->dcmd;
6051
6052         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6053
6054         dcmd->cmd = MFI_CMD_DCMD;
6055         dcmd->cmd_status = 0x0;
6056         dcmd->sge_count = 0;
6057         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6058         dcmd->timeout = 0;
6059         dcmd->pad_0 = 0;
6060         dcmd->data_xfer_len = 0;
6061         dcmd->opcode = cpu_to_le32(opcode);
6062
6063         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6064                         != DCMD_SUCCESS) {
6065                 dev_err(&instance->pdev->dev,
6066                         "return from %s %d\n", __func__, __LINE__);
6067                 return;
6068         }
6069
6070         megasas_return_cmd(instance, cmd);
6071 }
6072
6073 #ifdef CONFIG_PM
6074 /**
6075  * megasas_suspend -    driver suspend entry point
6076  * @pdev:               PCI device structure
6077  * @state:              PCI power state to suspend routine
6078  */
6079 static int
6080 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
6081 {
6082         struct Scsi_Host *host;
6083         struct megasas_instance *instance;
6084
6085         instance = pci_get_drvdata(pdev);
6086         host = instance->host;
6087         instance->unload = 1;
6088
6089         /* Shutdown SR-IOV heartbeat timer */
6090         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6091                 del_timer_sync(&instance->sriov_heartbeat_timer);
6092
6093         megasas_flush_cache(instance);
6094         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
6095
6096         /* cancel the delayed work if this work still in queue */
6097         if (instance->ev != NULL) {
6098                 struct megasas_aen_event *ev = instance->ev;
6099                 cancel_delayed_work_sync(&ev->hotplug_work);
6100                 instance->ev = NULL;
6101         }
6102
6103         tasklet_kill(&instance->isr_tasklet);
6104
6105         pci_set_drvdata(instance->pdev, instance);
6106         instance->instancet->disable_intr(instance);
6107
6108         megasas_destroy_irqs(instance);
6109
6110         if (instance->msix_vectors)
6111                 pci_disable_msix(instance->pdev);
6112
6113         pci_save_state(pdev);
6114         pci_disable_device(pdev);
6115
6116         pci_set_power_state(pdev, pci_choose_state(pdev, state));
6117
6118         return 0;
6119 }
6120
6121 /**
6122  * megasas_resume-      driver resume entry point
6123  * @pdev:               PCI device structure
6124  */
6125 static int
6126 megasas_resume(struct pci_dev *pdev)
6127 {
6128         int rval;
6129         struct Scsi_Host *host;
6130         struct megasas_instance *instance;
6131
6132         instance = pci_get_drvdata(pdev);
6133         host = instance->host;
6134         pci_set_power_state(pdev, PCI_D0);
6135         pci_enable_wake(pdev, PCI_D0, 0);
6136         pci_restore_state(pdev);
6137
6138         /*
6139          * PCI prepping: enable device set bus mastering and dma mask
6140          */
6141         rval = pci_enable_device_mem(pdev);
6142
6143         if (rval) {
6144                 dev_err(&pdev->dev, "Enable device failed\n");
6145                 return rval;
6146         }
6147
6148         pci_set_master(pdev);
6149
6150         if (megasas_set_dma_mask(pdev))
6151                 goto fail_set_dma_mask;
6152
6153         /*
6154          * Initialize MFI Firmware
6155          */
6156
6157         atomic_set(&instance->fw_outstanding, 0);
6158
6159         /*
6160          * We expect the FW state to be READY
6161          */
6162         if (megasas_transition_to_ready(instance, 0))
6163                 goto fail_ready_state;
6164
6165         /* Now re-enable MSI-X */
6166         if (instance->msix_vectors &&
6167             pci_enable_msix_exact(instance->pdev, instance->msixentry,
6168                                   instance->msix_vectors))
6169                 goto fail_reenable_msix;
6170
6171         if (instance->ctrl_context) {
6172                 megasas_reset_reply_desc(instance);
6173                 if (megasas_ioc_init_fusion(instance)) {
6174                         megasas_free_cmds(instance);
6175                         megasas_free_cmds_fusion(instance);
6176                         goto fail_init_mfi;
6177                 }
6178                 if (!megasas_get_map_info(instance))
6179                         megasas_sync_map_info(instance);
6180         } else {
6181                 *instance->producer = 0;
6182                 *instance->consumer = 0;
6183                 if (megasas_issue_init_mfi(instance))
6184                         goto fail_init_mfi;
6185         }
6186
6187         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6188                      (unsigned long)instance);
6189
6190         if (instance->msix_vectors ?
6191                         megasas_setup_irqs_msix(instance, 0) :
6192                         megasas_setup_irqs_ioapic(instance))
6193                 goto fail_init_mfi;
6194
6195         /* Re-launch SR-IOV heartbeat timer */
6196         if (instance->requestorId) {
6197                 if (!megasas_sriov_start_heartbeat(instance, 0))
6198                         megasas_start_timer(instance,
6199                                             &instance->sriov_heartbeat_timer,
6200                                             megasas_sriov_heartbeat_handler,
6201                                             MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
6202                 else {
6203                         instance->skip_heartbeat_timer_del = 1;
6204                         goto fail_init_mfi;
6205                 }
6206         }
6207
6208         instance->instancet->enable_intr(instance);
6209         megasas_setup_jbod_map(instance);
6210         instance->unload = 0;
6211
6212         /*
6213          * Initiate AEN (Asynchronous Event Notification)
6214          */
6215         if (megasas_start_aen(instance))
6216                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
6217
6218         return 0;
6219
6220 fail_init_mfi:
6221         if (instance->evt_detail)
6222                 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6223                                 instance->evt_detail,
6224                                 instance->evt_detail_h);
6225
6226         if (instance->pd_info)
6227                 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6228                                         instance->pd_info,
6229                                         instance->pd_info_h);
6230         if (instance->producer)
6231                 pci_free_consistent(pdev, sizeof(u32), instance->producer,
6232                                 instance->producer_h);
6233         if (instance->consumer)
6234                 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
6235                                 instance->consumer_h);
6236         scsi_host_put(host);
6237
6238 fail_set_dma_mask:
6239 fail_ready_state:
6240 fail_reenable_msix:
6241
6242         pci_disable_device(pdev);
6243
6244         return -ENODEV;
6245 }
6246 #else
6247 #define megasas_suspend NULL
6248 #define megasas_resume  NULL
6249 #endif
6250
6251 /**
6252  * megasas_detach_one - PCI hot"un"plug entry point
6253  * @pdev:               PCI device structure
6254  */
6255 static void megasas_detach_one(struct pci_dev *pdev)
6256 {
6257         int i;
6258         struct Scsi_Host *host;
6259         struct megasas_instance *instance;
6260         struct fusion_context *fusion;
6261         u32 pd_seq_map_sz;
6262
6263         instance = pci_get_drvdata(pdev);
6264         instance->unload = 1;
6265         host = instance->host;
6266         fusion = instance->ctrl_context;
6267
6268         /* Shutdown SR-IOV heartbeat timer */
6269         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6270                 del_timer_sync(&instance->sriov_heartbeat_timer);
6271
6272         if (instance->fw_crash_state != UNAVAILABLE)
6273                 megasas_free_host_crash_buffer(instance);
6274         scsi_remove_host(instance->host);
6275         megasas_flush_cache(instance);
6276         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6277
6278         /* cancel the delayed work if this work still in queue*/
6279         if (instance->ev != NULL) {
6280                 struct megasas_aen_event *ev = instance->ev;
6281                 cancel_delayed_work_sync(&ev->hotplug_work);
6282                 instance->ev = NULL;
6283         }
6284
6285         /* cancel all wait events */
6286         wake_up_all(&instance->int_cmd_wait_q);
6287
6288         tasklet_kill(&instance->isr_tasklet);
6289
6290         /*
6291          * Take the instance off the instance array. Note that we will not
6292          * decrement the max_index. We let this array be sparse array
6293          */
6294         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6295                 if (megasas_mgmt_info.instance[i] == instance) {
6296                         megasas_mgmt_info.count--;
6297                         megasas_mgmt_info.instance[i] = NULL;
6298
6299                         break;
6300                 }
6301         }
6302
6303         instance->instancet->disable_intr(instance);
6304
6305         megasas_destroy_irqs(instance);
6306
6307         if (instance->msix_vectors)
6308                 pci_disable_msix(instance->pdev);
6309
6310         if (instance->ctrl_context) {
6311                 megasas_release_fusion(instance);
6312                         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
6313                                 (sizeof(struct MR_PD_CFG_SEQ) *
6314                                         (MAX_PHYSICAL_DEVICES - 1));
6315                 for (i = 0; i < 2 ; i++) {
6316                         if (fusion->ld_map[i])
6317                                 dma_free_coherent(&instance->pdev->dev,
6318                                                   fusion->max_map_sz,
6319                                                   fusion->ld_map[i],
6320                                                   fusion->ld_map_phys[i]);
6321                         if (fusion->ld_drv_map[i])
6322                                 free_pages((ulong)fusion->ld_drv_map[i],
6323                                         fusion->drv_map_pages);
6324                         if (fusion->pd_seq_sync[i])
6325                                 dma_free_coherent(&instance->pdev->dev,
6326                                         pd_seq_map_sz,
6327                                         fusion->pd_seq_sync[i],
6328                                         fusion->pd_seq_phys[i]);
6329                 }
6330                 free_pages((ulong)instance->ctrl_context,
6331                         instance->ctrl_context_pages);
6332         } else {
6333                 megasas_release_mfi(instance);
6334                 pci_free_consistent(pdev, sizeof(u32),
6335                                     instance->producer,
6336                                     instance->producer_h);
6337                 pci_free_consistent(pdev, sizeof(u32),
6338                                     instance->consumer,
6339                                     instance->consumer_h);
6340         }
6341
6342         kfree(instance->ctrl_info);
6343
6344         if (instance->evt_detail)
6345                 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6346                                 instance->evt_detail, instance->evt_detail_h);
6347
6348         if (instance->pd_info)
6349                 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6350                                         instance->pd_info,
6351                                         instance->pd_info_h);
6352         if (instance->vf_affiliation)
6353                 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
6354                                     sizeof(struct MR_LD_VF_AFFILIATION),
6355                                     instance->vf_affiliation,
6356                                     instance->vf_affiliation_h);
6357
6358         if (instance->vf_affiliation_111)
6359                 pci_free_consistent(pdev,
6360                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
6361                                     instance->vf_affiliation_111,
6362                                     instance->vf_affiliation_111_h);
6363
6364         if (instance->hb_host_mem)
6365                 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
6366                                     instance->hb_host_mem,
6367                                     instance->hb_host_mem_h);
6368
6369         if (instance->crash_dump_buf)
6370                 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
6371                             instance->crash_dump_buf, instance->crash_dump_h);
6372
6373         if (instance->system_info_buf)
6374                 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
6375                                     instance->system_info_buf, instance->system_info_h);
6376
6377         scsi_host_put(host);
6378
6379         pci_disable_device(pdev);
6380 }
6381
6382 /**
6383  * megasas_shutdown -   Shutdown entry point
6384  * @device:             Generic device structure
6385  */
6386 static void megasas_shutdown(struct pci_dev *pdev)
6387 {
6388         struct megasas_instance *instance = pci_get_drvdata(pdev);
6389
6390         instance->unload = 1;
6391         megasas_flush_cache(instance);
6392         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6393         instance->instancet->disable_intr(instance);
6394         megasas_destroy_irqs(instance);
6395
6396         if (instance->msix_vectors)
6397                 pci_disable_msix(instance->pdev);
6398 }
6399
6400 /**
6401  * megasas_mgmt_open -  char node "open" entry point
6402  */
6403 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
6404 {
6405         /*
6406          * Allow only those users with admin rights
6407          */
6408         if (!capable(CAP_SYS_ADMIN))
6409                 return -EACCES;
6410
6411         return 0;
6412 }
6413
6414 /**
6415  * megasas_mgmt_fasync -        Async notifier registration from applications
6416  *
6417  * This function adds the calling process to a driver global queue. When an
6418  * event occurs, SIGIO will be sent to all processes in this queue.
6419  */
6420 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
6421 {
6422         int rc;
6423
6424         mutex_lock(&megasas_async_queue_mutex);
6425
6426         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
6427
6428         mutex_unlock(&megasas_async_queue_mutex);
6429
6430         if (rc >= 0) {
6431                 /* For sanity check when we get ioctl */
6432                 filep->private_data = filep;
6433                 return 0;
6434         }
6435
6436         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
6437
6438         return rc;
6439 }
6440
6441 /**
6442  * megasas_mgmt_poll -  char node "poll" entry point
6443  * */
6444 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
6445 {
6446         unsigned int mask;
6447         unsigned long flags;
6448
6449         poll_wait(file, &megasas_poll_wait, wait);
6450         spin_lock_irqsave(&poll_aen_lock, flags);
6451         if (megasas_poll_wait_aen)
6452                 mask = (POLLIN | POLLRDNORM);
6453         else
6454                 mask = 0;
6455         megasas_poll_wait_aen = 0;
6456         spin_unlock_irqrestore(&poll_aen_lock, flags);
6457         return mask;
6458 }
6459
6460 /*
6461  * megasas_set_crash_dump_params_ioctl:
6462  *              Send CRASH_DUMP_MODE DCMD to all controllers
6463  * @cmd:        MFI command frame
6464  */
6465
6466 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
6467 {
6468         struct megasas_instance *local_instance;
6469         int i, error = 0;
6470         int crash_support;
6471
6472         crash_support = cmd->frame->dcmd.mbox.w[0];
6473
6474         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6475                 local_instance = megasas_mgmt_info.instance[i];
6476                 if (local_instance && local_instance->crash_dump_drv_support) {
6477                         if ((atomic_read(&local_instance->adprecovery) ==
6478                                 MEGASAS_HBA_OPERATIONAL) &&
6479                                 !megasas_set_crash_dump_params(local_instance,
6480                                         crash_support)) {
6481                                 local_instance->crash_dump_app_support =
6482                                         crash_support;
6483                                 dev_info(&local_instance->pdev->dev,
6484                                         "Application firmware crash "
6485                                         "dump mode set success\n");
6486                                 error = 0;
6487                         } else {
6488                                 dev_info(&local_instance->pdev->dev,
6489                                         "Application firmware crash "
6490                                         "dump mode set failed\n");
6491                                 error = -1;
6492                         }
6493                 }
6494         }
6495         return error;
6496 }
6497
6498 /**
6499  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
6500  * @instance:                   Adapter soft state
6501  * @argp:                       User's ioctl packet
6502  */
6503 static int
6504 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
6505                       struct megasas_iocpacket __user * user_ioc,
6506                       struct megasas_iocpacket *ioc)
6507 {
6508         struct megasas_sge32 *kern_sge32;
6509         struct megasas_cmd *cmd;
6510         void *kbuff_arr[MAX_IOCTL_SGE];
6511         dma_addr_t buf_handle = 0;
6512         int error = 0, i;
6513         void *sense = NULL;
6514         dma_addr_t sense_handle;
6515         unsigned long *sense_ptr;
6516
6517         memset(kbuff_arr, 0, sizeof(kbuff_arr));
6518
6519         if (ioc->sge_count > MAX_IOCTL_SGE) {
6520                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
6521                        ioc->sge_count, MAX_IOCTL_SGE);
6522                 return -EINVAL;
6523         }
6524
6525         cmd = megasas_get_cmd(instance);
6526         if (!cmd) {
6527                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
6528                 return -ENOMEM;
6529         }
6530
6531         /*
6532          * User's IOCTL packet has 2 frames (maximum). Copy those two
6533          * frames into our cmd's frames. cmd->frame's context will get
6534          * overwritten when we copy from user's frames. So set that value
6535          * alone separately
6536          */
6537         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
6538         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6539         cmd->frame->hdr.pad_0 = 0;
6540         cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
6541                                                MFI_FRAME_SGL64 |
6542                                                MFI_FRAME_SENSE64));
6543
6544         if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
6545                 error = megasas_set_crash_dump_params_ioctl(cmd);
6546                 megasas_return_cmd(instance, cmd);
6547                 return error;
6548         }
6549
6550         /*
6551          * The management interface between applications and the fw uses
6552          * MFI frames. E.g, RAID configuration changes, LD property changes
6553          * etc are accomplishes through different kinds of MFI frames. The
6554          * driver needs to care only about substituting user buffers with
6555          * kernel buffers in SGLs. The location of SGL is embedded in the
6556          * struct iocpacket itself.
6557          */
6558         kern_sge32 = (struct megasas_sge32 *)
6559             ((unsigned long)cmd->frame + ioc->sgl_off);
6560
6561         /*
6562          * For each user buffer, create a mirror buffer and copy in
6563          */
6564         for (i = 0; i < ioc->sge_count; i++) {
6565                 if (!ioc->sgl[i].iov_len)
6566                         continue;
6567
6568                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6569                                                     ioc->sgl[i].iov_len,
6570                                                     &buf_handle, GFP_KERNEL);
6571                 if (!kbuff_arr[i]) {
6572                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
6573                                "kernel SGL buffer for IOCTL\n");
6574                         error = -ENOMEM;
6575                         goto out;
6576                 }
6577
6578                 /*
6579                  * We don't change the dma_coherent_mask, so
6580                  * pci_alloc_consistent only returns 32bit addresses
6581                  */
6582                 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6583                 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6584
6585                 /*
6586                  * We created a kernel buffer corresponding to the
6587                  * user buffer. Now copy in from the user buffer
6588                  */
6589                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6590                                    (u32) (ioc->sgl[i].iov_len))) {
6591                         error = -EFAULT;
6592                         goto out;
6593                 }
6594         }
6595
6596         if (ioc->sense_len) {
6597                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6598                                              &sense_handle, GFP_KERNEL);
6599                 if (!sense) {
6600                         error = -ENOMEM;
6601                         goto out;
6602                 }
6603
6604                 sense_ptr =
6605                 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6606                 *sense_ptr = cpu_to_le32(sense_handle);
6607         }
6608
6609         /*
6610          * Set the sync_cmd flag so that the ISR knows not to complete this
6611          * cmd to the SCSI mid-layer
6612          */
6613         cmd->sync_cmd = 1;
6614         if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
6615                 cmd->sync_cmd = 0;
6616                 dev_err(&instance->pdev->dev,
6617                         "return -EBUSY from %s %d opcode 0x%x cmd->cmd_status_drv 0x%x\n",
6618                         __func__, __LINE__, cmd->frame->dcmd.opcode,
6619                         cmd->cmd_status_drv);
6620                 return -EBUSY;
6621         }
6622
6623         cmd->sync_cmd = 0;
6624
6625         if (instance->unload == 1) {
6626                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
6627                         "don't submit data to application\n");
6628                 goto out;
6629         }
6630         /*
6631          * copy out the kernel buffers to user buffers
6632          */
6633         for (i = 0; i < ioc->sge_count; i++) {
6634                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6635                                  ioc->sgl[i].iov_len)) {
6636                         error = -EFAULT;
6637                         goto out;
6638                 }
6639         }
6640
6641         /*
6642          * copy out the sense
6643          */
6644         if (ioc->sense_len) {
6645                 /*
6646                  * sense_ptr points to the location that has the user
6647                  * sense buffer address
6648                  */
6649                 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6650                                 ioc->sense_off);
6651
6652                 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6653                                  sense, ioc->sense_len)) {
6654                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
6655                                         "sense data\n");
6656                         error = -EFAULT;
6657                         goto out;
6658                 }
6659         }
6660
6661         /*
6662          * copy the status codes returned by the fw
6663          */
6664         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6665                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6666                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
6667                 error = -EFAULT;
6668         }
6669
6670 out:
6671         if (sense) {
6672                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6673                                     sense, sense_handle);
6674         }
6675
6676         for (i = 0; i < ioc->sge_count; i++) {
6677                 if (kbuff_arr[i]) {
6678                         dma_free_coherent(&instance->pdev->dev,
6679                                           le32_to_cpu(kern_sge32[i].length),
6680                                           kbuff_arr[i],
6681                                           le32_to_cpu(kern_sge32[i].phys_addr));
6682                         kbuff_arr[i] = NULL;
6683                 }
6684         }
6685
6686         megasas_return_cmd(instance, cmd);
6687         return error;
6688 }
6689
6690 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6691 {
6692         struct megasas_iocpacket __user *user_ioc =
6693             (struct megasas_iocpacket __user *)arg;
6694         struct megasas_iocpacket *ioc;
6695         struct megasas_instance *instance;
6696         int error;
6697         int i;
6698         unsigned long flags;
6699         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6700
6701         ioc = memdup_user(user_ioc, sizeof(*ioc));
6702         if (IS_ERR(ioc))
6703                 return PTR_ERR(ioc);
6704
6705         instance = megasas_lookup_instance(ioc->host_no);
6706         if (!instance) {
6707                 error = -ENODEV;
6708                 goto out_kfree_ioc;
6709         }
6710
6711         /* Adjust ioctl wait time for VF mode */
6712         if (instance->requestorId)
6713                 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6714
6715         /* Block ioctls in VF mode */
6716         if (instance->requestorId && !allow_vf_ioctls) {
6717                 error = -ENODEV;
6718                 goto out_kfree_ioc;
6719         }
6720
6721         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6722                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
6723                 error = -ENODEV;
6724                 goto out_kfree_ioc;
6725         }
6726
6727         if (instance->unload == 1) {
6728                 error = -ENODEV;
6729                 goto out_kfree_ioc;
6730         }
6731
6732         if (down_interruptible(&instance->ioctl_sem)) {
6733                 error = -ERESTARTSYS;
6734                 goto out_kfree_ioc;
6735         }
6736
6737         for (i = 0; i < wait_time; i++) {
6738
6739                 spin_lock_irqsave(&instance->hba_lock, flags);
6740                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6741                         spin_unlock_irqrestore(&instance->hba_lock, flags);
6742                         break;
6743                 }
6744                 spin_unlock_irqrestore(&instance->hba_lock, flags);
6745
6746                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6747                         dev_notice(&instance->pdev->dev, "waiting"
6748                                 "for controller reset to finish\n");
6749                 }
6750
6751                 msleep(1000);
6752         }
6753
6754         spin_lock_irqsave(&instance->hba_lock, flags);
6755         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6756                 spin_unlock_irqrestore(&instance->hba_lock, flags);
6757
6758                 dev_err(&instance->pdev->dev, "timed out while"
6759                         "waiting for HBA to recover\n");
6760                 error = -ENODEV;
6761                 goto out_up;
6762         }
6763         spin_unlock_irqrestore(&instance->hba_lock, flags);
6764
6765         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6766 out_up:
6767         up(&instance->ioctl_sem);
6768
6769 out_kfree_ioc:
6770         kfree(ioc);
6771         return error;
6772 }
6773
6774 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6775 {
6776         struct megasas_instance *instance;
6777         struct megasas_aen aen;
6778         int error;
6779         int i;
6780         unsigned long flags;
6781         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6782
6783         if (file->private_data != file) {
6784                 printk(KERN_DEBUG "megasas: fasync_helper was not "
6785                        "called first\n");
6786                 return -EINVAL;
6787         }
6788
6789         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6790                 return -EFAULT;
6791
6792         instance = megasas_lookup_instance(aen.host_no);
6793
6794         if (!instance)
6795                 return -ENODEV;
6796
6797         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6798                 return -ENODEV;
6799         }
6800
6801         if (instance->unload == 1) {
6802                 return -ENODEV;
6803         }
6804
6805         for (i = 0; i < wait_time; i++) {
6806
6807                 spin_lock_irqsave(&instance->hba_lock, flags);
6808                 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6809                         spin_unlock_irqrestore(&instance->hba_lock,
6810                                                 flags);
6811                         break;
6812                 }
6813
6814                 spin_unlock_irqrestore(&instance->hba_lock, flags);
6815
6816                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6817                         dev_notice(&instance->pdev->dev, "waiting for"
6818                                 "controller reset to finish\n");
6819                 }
6820
6821                 msleep(1000);
6822         }
6823
6824         spin_lock_irqsave(&instance->hba_lock, flags);
6825         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6826                 spin_unlock_irqrestore(&instance->hba_lock, flags);
6827                 dev_err(&instance->pdev->dev, "timed out while waiting"
6828                                 "for HBA to recover\n");
6829                 return -ENODEV;
6830         }
6831         spin_unlock_irqrestore(&instance->hba_lock, flags);
6832
6833         mutex_lock(&instance->reset_mutex);
6834         error = megasas_register_aen(instance, aen.seq_num,
6835                                      aen.class_locale_word);
6836         mutex_unlock(&instance->reset_mutex);
6837         return error;
6838 }
6839
6840 /**
6841  * megasas_mgmt_ioctl - char node ioctl entry point
6842  */
6843 static long
6844 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6845 {
6846         switch (cmd) {
6847         case MEGASAS_IOC_FIRMWARE:
6848                 return megasas_mgmt_ioctl_fw(file, arg);
6849
6850         case MEGASAS_IOC_GET_AEN:
6851                 return megasas_mgmt_ioctl_aen(file, arg);
6852         }
6853
6854         return -ENOTTY;
6855 }
6856
6857 #ifdef CONFIG_COMPAT
6858 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6859 {
6860         struct compat_megasas_iocpacket __user *cioc =
6861             (struct compat_megasas_iocpacket __user *)arg;
6862         struct megasas_iocpacket __user *ioc =
6863             compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6864         int i;
6865         int error = 0;
6866         compat_uptr_t ptr;
6867         u32 local_sense_off;
6868         u32 local_sense_len;
6869         u32 user_sense_off;
6870
6871         if (clear_user(ioc, sizeof(*ioc)))
6872                 return -EFAULT;
6873
6874         if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6875             copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6876             copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6877             copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6878             copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6879             copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6880                 return -EFAULT;
6881
6882         /*
6883          * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6884          * sense_len is not null, so prepare the 64bit value under
6885          * the same condition.
6886          */
6887         if (get_user(local_sense_off, &ioc->sense_off) ||
6888                 get_user(local_sense_len, &ioc->sense_len) ||
6889                 get_user(user_sense_off, &cioc->sense_off))
6890                 return -EFAULT;
6891
6892         if (local_sense_len) {
6893                 void __user **sense_ioc_ptr =
6894                         (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
6895                 compat_uptr_t *sense_cioc_ptr =
6896                         (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
6897                 if (get_user(ptr, sense_cioc_ptr) ||
6898                     put_user(compat_ptr(ptr), sense_ioc_ptr))
6899                         return -EFAULT;
6900         }
6901
6902         for (i = 0; i < MAX_IOCTL_SGE; i++) {
6903                 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6904                     put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6905                     copy_in_user(&ioc->sgl[i].iov_len,
6906                                  &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6907                         return -EFAULT;
6908         }
6909
6910         error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6911
6912         if (copy_in_user(&cioc->frame.hdr.cmd_status,
6913                          &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6914                 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6915                 return -EFAULT;
6916         }
6917         return error;
6918 }
6919
6920 static long
6921 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6922                           unsigned long arg)
6923 {
6924         switch (cmd) {
6925         case MEGASAS_IOC_FIRMWARE32:
6926                 return megasas_mgmt_compat_ioctl_fw(file, arg);
6927         case MEGASAS_IOC_GET_AEN:
6928                 return megasas_mgmt_ioctl_aen(file, arg);
6929         }
6930
6931         return -ENOTTY;
6932 }
6933 #endif
6934
6935 /*
6936  * File operations structure for management interface
6937  */
6938 static const struct file_operations megasas_mgmt_fops = {
6939         .owner = THIS_MODULE,
6940         .open = megasas_mgmt_open,
6941         .fasync = megasas_mgmt_fasync,
6942         .unlocked_ioctl = megasas_mgmt_ioctl,
6943         .poll = megasas_mgmt_poll,
6944 #ifdef CONFIG_COMPAT
6945         .compat_ioctl = megasas_mgmt_compat_ioctl,
6946 #endif
6947         .llseek = noop_llseek,
6948 };
6949
6950 /*
6951  * PCI hotplug support registration structure
6952  */
6953 static struct pci_driver megasas_pci_driver = {
6954
6955         .name = "megaraid_sas",
6956         .id_table = megasas_pci_table,
6957         .probe = megasas_probe_one,
6958         .remove = megasas_detach_one,
6959         .suspend = megasas_suspend,
6960         .resume = megasas_resume,
6961         .shutdown = megasas_shutdown,
6962 };
6963
6964 /*
6965  * Sysfs driver attributes
6966  */
6967 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6968 {
6969         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6970                         MEGASAS_VERSION);
6971 }
6972
6973 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6974
6975 static ssize_t
6976 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
6977 {
6978         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
6979                 MEGASAS_RELDATE);
6980 }
6981
6982 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL);
6983
6984 static ssize_t
6985 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
6986 {
6987         return sprintf(buf, "%u\n", support_poll_for_event);
6988 }
6989
6990 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
6991                         megasas_sysfs_show_support_poll_for_event, NULL);
6992
6993  static ssize_t
6994 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
6995 {
6996         return sprintf(buf, "%u\n", support_device_change);
6997 }
6998
6999 static DRIVER_ATTR(support_device_change, S_IRUGO,
7000                         megasas_sysfs_show_support_device_change, NULL);
7001
7002 static ssize_t
7003 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
7004 {
7005         return sprintf(buf, "%u\n", megasas_dbg_lvl);
7006 }
7007
7008 static ssize_t
7009 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
7010 {
7011         int retval = count;
7012
7013         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
7014                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
7015                 retval = -EINVAL;
7016         }
7017         return retval;
7018 }
7019
7020 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
7021                 megasas_sysfs_set_dbg_lvl);
7022
7023 static void
7024 megasas_aen_polling(struct work_struct *work)
7025 {
7026         struct megasas_aen_event *ev =
7027                 container_of(work, struct megasas_aen_event, hotplug_work.work);
7028         struct megasas_instance *instance = ev->instance;
7029         union megasas_evt_class_locale class_locale;
7030         struct  Scsi_Host *host;
7031         struct  scsi_device *sdev1;
7032         u16     pd_index = 0;
7033         u16     ld_index = 0;
7034         int     i, j, doscan = 0;
7035         u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7036         int error;
7037         u8  dcmd_ret = DCMD_SUCCESS;
7038
7039         if (!instance) {
7040                 printk(KERN_ERR "invalid instance!\n");
7041                 kfree(ev);
7042                 return;
7043         }
7044
7045         /* Adjust event workqueue thread wait time for VF mode */
7046         if (instance->requestorId)
7047                 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
7048
7049         /* Don't run the event workqueue thread if OCR is running */
7050         mutex_lock(&instance->reset_mutex);
7051
7052         instance->ev = NULL;
7053         host = instance->host;
7054         if (instance->evt_detail) {
7055                 megasas_decode_evt(instance);
7056
7057                 switch (le32_to_cpu(instance->evt_detail->code)) {
7058
7059                 case MR_EVT_PD_INSERTED:
7060                 case MR_EVT_PD_REMOVED:
7061                         dcmd_ret = megasas_get_pd_list(instance);
7062                         if (dcmd_ret == DCMD_SUCCESS)
7063                                 doscan = SCAN_PD_CHANNEL;
7064                         break;
7065
7066                 case MR_EVT_LD_OFFLINE:
7067                 case MR_EVT_CFG_CLEARED:
7068                 case MR_EVT_LD_DELETED:
7069                 case MR_EVT_LD_CREATED:
7070                         if (!instance->requestorId ||
7071                                 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7072                                 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7073
7074                         if (dcmd_ret == DCMD_SUCCESS)
7075                                 doscan = SCAN_VD_CHANNEL;
7076
7077                         break;
7078
7079                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
7080                 case MR_EVT_FOREIGN_CFG_IMPORTED:
7081                 case MR_EVT_LD_STATE_CHANGE:
7082                         dcmd_ret = megasas_get_pd_list(instance);
7083
7084                         if (dcmd_ret != DCMD_SUCCESS)
7085                                 break;
7086
7087                         if (!instance->requestorId ||
7088                                 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7089                                 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7090
7091                         if (dcmd_ret != DCMD_SUCCESS)
7092                                 break;
7093
7094                         doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL;
7095                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
7096                                 instance->host->host_no);
7097                         break;
7098
7099                 case MR_EVT_CTRL_PROP_CHANGED:
7100                                 dcmd_ret = megasas_get_ctrl_info(instance);
7101                                 break;
7102                 default:
7103                         doscan = 0;
7104                         break;
7105                 }
7106         } else {
7107                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
7108                 mutex_unlock(&instance->reset_mutex);
7109                 kfree(ev);
7110                 return;
7111         }
7112
7113         mutex_unlock(&instance->reset_mutex);
7114
7115         if (doscan & SCAN_PD_CHANNEL) {
7116                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
7117                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7118                                 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
7119                                 sdev1 = scsi_device_lookup(host, i, j, 0);
7120                                 if (instance->pd_list[pd_index].driveState ==
7121                                                         MR_PD_STATE_SYSTEM) {
7122                                         if (!sdev1)
7123                                                 scsi_add_device(host, i, j, 0);
7124                                         else
7125                                                 scsi_device_put(sdev1);
7126                                 } else {
7127                                         if (sdev1) {
7128                                                 scsi_remove_device(sdev1);
7129                                                 scsi_device_put(sdev1);
7130                                         }
7131                                 }
7132                         }
7133                 }
7134         }
7135
7136         if (doscan & SCAN_VD_CHANNEL) {
7137                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
7138                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7139                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
7140                                 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7141                                 if (instance->ld_ids[ld_index] != 0xff) {
7142                                         if (!sdev1)
7143                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7144                                         else
7145                                                 scsi_device_put(sdev1);
7146                                 } else {
7147                                         if (sdev1) {
7148                                                 scsi_remove_device(sdev1);
7149                                                 scsi_device_put(sdev1);
7150                                         }
7151                                 }
7152                         }
7153                 }
7154         }
7155
7156         if (dcmd_ret == DCMD_SUCCESS)
7157                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7158         else
7159                 seq_num = instance->last_seq_num;
7160
7161         /* Register AEN with FW for latest sequence number plus 1 */
7162         class_locale.members.reserved = 0;
7163         class_locale.members.locale = MR_EVT_LOCALE_ALL;
7164         class_locale.members.class = MR_EVT_CLASS_DEBUG;
7165
7166         if (instance->aen_cmd != NULL) {
7167                 kfree(ev);
7168                 return;
7169         }
7170
7171         mutex_lock(&instance->reset_mutex);
7172         error = megasas_register_aen(instance, seq_num,
7173                                         class_locale.word);
7174         if (error)
7175                 dev_err(&instance->pdev->dev,
7176                         "register aen failed error %x\n", error);
7177
7178         mutex_unlock(&instance->reset_mutex);
7179         kfree(ev);
7180 }
7181
7182 /**
7183  * megasas_init - Driver load entry point
7184  */
7185 static int __init megasas_init(void)
7186 {
7187         int rval;
7188
7189         /*
7190          * Booted in kdump kernel, minimize memory footprints by
7191          * disabling few features
7192          */
7193         if (reset_devices) {
7194                 msix_vectors = 1;
7195                 rdpq_enable = 0;
7196                 dual_qdepth_disable = 1;
7197         }
7198
7199         /*
7200          * Announce driver version and other information
7201          */
7202         pr_info("megasas: %s\n", MEGASAS_VERSION);
7203
7204         spin_lock_init(&poll_aen_lock);
7205
7206         support_poll_for_event = 2;
7207         support_device_change = 1;
7208
7209         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
7210
7211         /*
7212          * Register character device node
7213          */
7214         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
7215
7216         if (rval < 0) {
7217                 printk(KERN_DEBUG "megasas: failed to open device node\n");
7218                 return rval;
7219         }
7220
7221         megasas_mgmt_majorno = rval;
7222
7223         /*
7224          * Register ourselves as PCI hotplug module
7225          */
7226         rval = pci_register_driver(&megasas_pci_driver);
7227
7228         if (rval) {
7229                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
7230                 goto err_pcidrv;
7231         }
7232
7233         rval = driver_create_file(&megasas_pci_driver.driver,
7234                                   &driver_attr_version);
7235         if (rval)
7236                 goto err_dcf_attr_ver;
7237
7238         rval = driver_create_file(&megasas_pci_driver.driver,
7239                                   &driver_attr_release_date);
7240         if (rval)
7241                 goto err_dcf_rel_date;
7242
7243         rval = driver_create_file(&megasas_pci_driver.driver,
7244                                 &driver_attr_support_poll_for_event);
7245         if (rval)
7246                 goto err_dcf_support_poll_for_event;
7247
7248         rval = driver_create_file(&megasas_pci_driver.driver,
7249                                   &driver_attr_dbg_lvl);
7250         if (rval)
7251                 goto err_dcf_dbg_lvl;
7252         rval = driver_create_file(&megasas_pci_driver.driver,
7253                                 &driver_attr_support_device_change);
7254         if (rval)
7255                 goto err_dcf_support_device_change;
7256
7257         return rval;
7258
7259 err_dcf_support_device_change:
7260         driver_remove_file(&megasas_pci_driver.driver,
7261                            &driver_attr_dbg_lvl);
7262 err_dcf_dbg_lvl:
7263         driver_remove_file(&megasas_pci_driver.driver,
7264                         &driver_attr_support_poll_for_event);
7265 err_dcf_support_poll_for_event:
7266         driver_remove_file(&megasas_pci_driver.driver,
7267                            &driver_attr_release_date);
7268 err_dcf_rel_date:
7269         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7270 err_dcf_attr_ver:
7271         pci_unregister_driver(&megasas_pci_driver);
7272 err_pcidrv:
7273         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7274         return rval;
7275 }
7276
7277 /**
7278  * megasas_exit - Driver unload entry point
7279  */
7280 static void __exit megasas_exit(void)
7281 {
7282         driver_remove_file(&megasas_pci_driver.driver,
7283                            &driver_attr_dbg_lvl);
7284         driver_remove_file(&megasas_pci_driver.driver,
7285                         &driver_attr_support_poll_for_event);
7286         driver_remove_file(&megasas_pci_driver.driver,
7287                         &driver_attr_support_device_change);
7288         driver_remove_file(&megasas_pci_driver.driver,
7289                            &driver_attr_release_date);
7290         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7291
7292         pci_unregister_driver(&megasas_pci_driver);
7293         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7294 }
7295
7296 module_init(megasas_init);
7297 module_exit(megasas_exit);