drivers/scsi/megaraid/megaraid_sas_base.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Linux MegaRAID driver for SAS based RAID controllers
   4  *
   5  *  Copyright (c) 2003-2013  LSI Corporation
   6  *  Copyright (c) 2013-2016  Avago Technologies
   7  *  Copyright (c) 2016-2018  Broadcom Inc.
   8  *
   9  *  Authors: Broadcom Inc.
  10  *           Sreenivas Bagalkote
  11  *           Sumant Patro
  12  *           Bo Yang
  13  *           Adam Radford
  14  *           Kashyap Desai <kashyap.desai@broadcom.com>
  15  *           Sumit Saxena <sumit.saxena@broadcom.com>
  16  *
  17  *  Send feedback to: megaraidlinux.pdl@broadcom.com
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/types.h>
  22 #include <linux/pci.h>
  23 #include <linux/list.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/module.h>
  26 #include <linux/spinlock.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/delay.h>
  29 #include <linux/uio.h>
  30 #include <linux/slab.h>
  31 #include <linux/uaccess.h>
  32 #include <asm/unaligned.h>
  33 #include <linux/fs.h>
  34 #include <linux/compat.h>
  35 #include <linux/blkdev.h>
  36 #include <linux/mutex.h>
  37 #include <linux/poll.h>
  38 #include <linux/vmalloc.h>
  39
  40 #include <scsi/scsi.h>
  41 #include <scsi/scsi_cmnd.h>
  42 #include <scsi/scsi_device.h>
  43 #include <scsi/scsi_host.h>
  44 #include <scsi/scsi_tcq.h>
  45 #include "megaraid_sas_fusion.h"
  46 #include "megaraid_sas.h"
  47
  48 /*
  49  * Number of sectors per IO command
  50  * Will be set in megasas_init_mfi if user does not provide
  51  */
  52 static unsigned int max_sectors;
  53 module_param_named(max_sectors, max_sectors, int, 0);
  54 MODULE_PARM_DESC(max_sectors,
  55         "Maximum number of sectors per IO command");
  56
  57 static int msix_disable;
  58 module_param(msix_disable, int, S_IRUGO);
  59 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
  60
  61 static unsigned int msix_vectors;
  62 module_param(msix_vectors, int, S_IRUGO);
  63 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
  64
  65 static int allow_vf_ioctls;
  66 module_param(allow_vf_ioctls, int, S_IRUGO);
  67 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
  68
  69 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
  70 module_param(throttlequeuedepth, int, S_IRUGO);
  71 MODULE_PARM_DESC(throttlequeuedepth,
  72         "Adapter queue depth when throttled due to I/O timeout. Default: 16");
  73
  74 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
  75 module_param(resetwaittime, int, S_IRUGO);
  76 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
  77
  78 int smp_affinity_enable = 1;
  79 module_param(smp_affinity_enable, int, S_IRUGO);
  80 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
  81
  82 int rdpq_enable = 1;
  83 module_param(rdpq_enable, int, S_IRUGO);
  84 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
  85
  86 unsigned int dual_qdepth_disable;
  87 module_param(dual_qdepth_disable, int, S_IRUGO);
  88 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
  89
  90 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
  91 module_param(scmd_timeout, int, S_IRUGO);
  92 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
  93
  94 MODULE_LICENSE("GPL");
  95 MODULE_VERSION(MEGASAS_VERSION);
  96 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
  97 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
  98
  99 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
 100 static int megasas_get_pd_list(struct megasas_instance *instance);
 101 static int megasas_ld_list_query(struct megasas_instance *instance,
 102                                  u8 query_type);
 103 static int megasas_issue_init_mfi(struct megasas_instance *instance);
 104 static int megasas_register_aen(struct megasas_instance *instance,
 105                                 u32 seq_num, u32 class_locale_word);
 106 static void megasas_get_pd_info(struct megasas_instance *instance,
 107                                 struct scsi_device *sdev);
 108
 109 /*
 110  * PCI ID table for all supported controllers
 111  */
 112 static struct pci_device_id megasas_pci_table[] = {
 113
 114         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
 115         /* xscale IOP */
 116         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
 117         /* ppc IOP */
 118         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
 119         /* ppc IOP */
 120         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
 121         /* gen2*/
 122         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
 123         /* gen2*/
 124         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
 125         /* skinny*/
 126         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
 127         /* skinny*/
 128         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
 129         /* xscale IOP, vega */
 130         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
 131         /* xscale IOP */
 132         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
 133         /* Fusion */
 134         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
 135         /* Plasma */
 136         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
 137         /* Invader */
 138         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
 139         /* Fury */
 140         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
 141         /* Intruder */
 142         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
 143         /* Intruder 24 port*/
 144         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
 145         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 146         /* VENTURA */
 147         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
 148         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
 149         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
 150         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
 151         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
 152         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
 153         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
 154         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
 155         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
 156         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
 157         {}
 158 };
 159
 160 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
 161
 162 static int megasas_mgmt_majorno;
 163 struct megasas_mgmt_info megasas_mgmt_info;
 164 static struct fasync_struct *megasas_async_queue;
 165 static DEFINE_MUTEX(megasas_async_queue_mutex);
 166
 167 static int megasas_poll_wait_aen;
 168 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
 169 static u32 support_poll_for_event;
 170 u32 megasas_dbg_lvl;
 171 static u32 support_device_change;
 172 static bool support_nvme_encapsulation;
 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_instance *instance);
 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 static int
 199 megasas_set_dma_mask(struct megasas_instance *instance);
 200 static int
 201 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
 202 static inline void
 203 megasas_free_ctrl_mem(struct megasas_instance *instance);
 204 static inline int
 205 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
 206 static inline void
 207 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
 208 static inline void
 209 megasas_init_ctrl_params(struct megasas_instance *instance);
 210
 211 u32 megasas_readl(struct megasas_instance *instance,
 212                   const volatile void __iomem *addr)
 213 {
 214         u32 i = 0, ret_val;
 215         /*
 216          * Due to a HW errata in Aero controllers, reads to certain
 217          * Fusion registers could intermittently return all zeroes.
 218          * This behavior is transient in nature and subsequent reads will
 219          * return valid value. As a workaround in driver, retry readl for
 220          * upto three times until a non-zero value is read.
 221          */
 222         if (instance->adapter_type == AERO_SERIES) {
 223                 do {
 224                         ret_val = readl(addr);
 225                         i++;
 226                 } while (ret_val == 0 && i < 3);
 227                 return ret_val;
 228         } else {
 229                 return readl(addr);
 230         }
 231 }
 232
 233 /**
 234  * megasas_set_dma_settings -   Populate DMA address, length and flags for DCMDs
 235  * @instance:                   Adapter soft state
 236  * @dcmd:                       DCMD frame inside MFI command
 237  * @dma_addr:                   DMA address of buffer to be passed to FW
 238  * @dma_len:                    Length of DMA buffer to be passed to FW
 239  * @return:                     void
 240  */
 241 void megasas_set_dma_settings(struct megasas_instance *instance,
 242                               struct megasas_dcmd_frame *dcmd,
 243                               dma_addr_t dma_addr, u32 dma_len)
 244 {
 245         if (instance->consistent_mask_64bit) {
 246                 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
 247                 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
 248                 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
 249
 250         } else {
 251                 dcmd->sgl.sge32[0].phys_addr =
 252                                 cpu_to_le32(lower_32_bits(dma_addr));
 253                 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
 254                 dcmd->flags = cpu_to_le16(dcmd->flags);
 255         }
 256 }
 257
 258 void
 259 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 260 {
 261         instance->instancet->fire_cmd(instance,
 262                 cmd->frame_phys_addr, 0, instance->reg_set);
 263         return;
 264 }
 265
 266 /**
 267  * megasas_get_cmd -    Get a command from the free pool
 268  * @instance:           Adapter soft state
 269  *
 270  * Returns a free command from the pool
 271  */
 272 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
 273                                                   *instance)
 274 {
 275         unsigned long flags;
 276         struct megasas_cmd *cmd = NULL;
 277
 278         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 279
 280         if (!list_empty(&instance->cmd_pool)) {
 281                 cmd = list_entry((&instance->cmd_pool)->next,
 282                                  struct megasas_cmd, list);
 283                 list_del_init(&cmd->list);
 284         } else {
 285                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
 286         }
 287
 288         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 289         return cmd;
 290 }
 291
 292 /**
 293  * megasas_return_cmd - Return a cmd to free command pool
 294  * @instance:           Adapter soft state
 295  * @cmd:                Command packet to be returned to free command pool
 296  */
 297 void
 298 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 299 {
 300         unsigned long flags;
 301         u32 blk_tags;
 302         struct megasas_cmd_fusion *cmd_fusion;
 303         struct fusion_context *fusion = instance->ctrl_context;
 304
 305         /* This flag is used only for fusion adapter.
 306          * Wait for Interrupt for Polled mode DCMD
 307          */
 308         if (cmd->flags & DRV_DCMD_POLLED_MODE)
 309                 return;
 310
 311         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 312
 313         if (fusion) {
 314                 blk_tags = instance->max_scsi_cmds + cmd->index;
 315                 cmd_fusion = fusion->cmd_list[blk_tags];
 316                 megasas_return_cmd_fusion(instance, cmd_fusion);
 317         }
 318         cmd->scmd = NULL;
 319         cmd->frame_count = 0;
 320         cmd->flags = 0;
 321         memset(cmd->frame, 0, instance->mfi_frame_size);
 322         cmd->frame->io.context = cpu_to_le32(cmd->index);
 323         if (!fusion && reset_devices)
 324                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 325         list_add(&cmd->list, (&instance->cmd_pool)->next);
 326
 327         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 328
 329 }
 330
 331 static const char *
 332 format_timestamp(uint32_t timestamp)
 333 {
 334         static char buffer[32];
 335
 336         if ((timestamp & 0xff000000) == 0xff000000)
 337                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
 338                 0x00ffffff);
 339         else
 340                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
 341         return buffer;
 342 }
 343
 344 static const char *
 345 format_class(int8_t class)
 346 {
 347         static char buffer[6];
 348
 349         switch (class) {
 350         case MFI_EVT_CLASS_DEBUG:
 351                 return "debug";
 352         case MFI_EVT_CLASS_PROGRESS:
 353                 return "progress";
 354         case MFI_EVT_CLASS_INFO:
 355                 return "info";
 356         case MFI_EVT_CLASS_WARNING:
 357                 return "WARN";
 358         case MFI_EVT_CLASS_CRITICAL:
 359                 return "CRIT";
 360         case MFI_EVT_CLASS_FATAL:
 361                 return "FATAL";
 362         case MFI_EVT_CLASS_DEAD:
 363                 return "DEAD";
 364         default:
 365                 snprintf(buffer, sizeof(buffer), "%d", class);
 366                 return buffer;
 367         }
 368 }
 369
 370 /**
 371   * megasas_decode_evt: Decode FW AEN event and print critical event
 372   * for information.
 373   * @instance:                  Adapter soft state
 374   */
 375 static void
 376 megasas_decode_evt(struct megasas_instance *instance)
 377 {
 378         struct megasas_evt_detail *evt_detail = instance->evt_detail;
 379         union megasas_evt_class_locale class_locale;
 380         class_locale.word = le32_to_cpu(evt_detail->cl.word);
 381
 382         if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
 383                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
 384                         le32_to_cpu(evt_detail->seq_num),
 385                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
 386                         (class_locale.members.locale),
 387                         format_class(class_locale.members.class),
 388                         evt_detail->description);
 389 }
 390
 391 /**
 392 *       The following functions are defined for xscale
 393 *       (deviceid : 1064R, PERC5) controllers
 394 */
 395
 396 /**
 397  * megasas_enable_intr_xscale - Enables interrupts
 398  * @regs:                       MFI register set
 399  */
 400 static inline void
 401 megasas_enable_intr_xscale(struct megasas_instance *instance)
 402 {
 403         struct megasas_register_set __iomem *regs;
 404
 405         regs = instance->reg_set;
 406         writel(0, &(regs)->outbound_intr_mask);
 407
 408         /* Dummy readl to force pci flush */
 409         readl(&regs->outbound_intr_mask);
 410 }
 411
 412 /**
 413  * megasas_disable_intr_xscale -Disables interrupt
 414  * @regs:                       MFI register set
 415  */
 416 static inline void
 417 megasas_disable_intr_xscale(struct megasas_instance *instance)
 418 {
 419         struct megasas_register_set __iomem *regs;
 420         u32 mask = 0x1f;
 421
 422         regs = instance->reg_set;
 423         writel(mask, &regs->outbound_intr_mask);
 424         /* Dummy readl to force pci flush */
 425         readl(&regs->outbound_intr_mask);
 426 }
 427
 428 /**
 429  * megasas_read_fw_status_reg_xscale - returns the current FW status value
 430  * @regs:                       MFI register set
 431  */
 432 static u32
 433 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
 434 {
 435         return readl(&instance->reg_set->outbound_msg_0);
 436 }
 437 /**
 438  * megasas_clear_interrupt_xscale -     Check & clear interrupt
 439  * @regs:                               MFI register set
 440  */
 441 static int
 442 megasas_clear_intr_xscale(struct megasas_instance *instance)
 443 {
 444         u32 status;
 445         u32 mfiStatus = 0;
 446         struct megasas_register_set __iomem *regs;
 447         regs = instance->reg_set;
 448
 449         /*
 450          * Check if it is our interrupt
 451          */
 452         status = readl(&regs->outbound_intr_status);
 453
 454         if (status & MFI_OB_INTR_STATUS_MASK)
 455                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 456         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
 457                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 458
 459         /*
 460          * Clear the interrupt by writing back the same value
 461          */
 462         if (mfiStatus)
 463                 writel(status, &regs->outbound_intr_status);
 464
 465         /* Dummy readl to force pci flush */
 466         readl(&regs->outbound_intr_status);
 467
 468         return mfiStatus;
 469 }
 470
 471 /**
 472  * megasas_fire_cmd_xscale -    Sends command to the FW
 473  * @frame_phys_addr :           Physical address of cmd
 474  * @frame_count :               Number of frames for the command
 475  * @regs :                      MFI register set
 476  */
 477 static inline void
 478 megasas_fire_cmd_xscale(struct megasas_instance *instance,
 479                 dma_addr_t frame_phys_addr,
 480                 u32 frame_count,
 481                 struct megasas_register_set __iomem *regs)
 482 {
 483         unsigned long flags;
 484
 485         spin_lock_irqsave(&instance->hba_lock, flags);
 486         writel((frame_phys_addr >> 3)|(frame_count),
 487                &(regs)->inbound_queue_port);
 488         spin_unlock_irqrestore(&instance->hba_lock, flags);
 489 }
 490
 491 /**
 492  * megasas_adp_reset_xscale -  For controller reset
 493  * @regs:                              MFI register set
 494  */
 495 static int
 496 megasas_adp_reset_xscale(struct megasas_instance *instance,
 497         struct megasas_register_set __iomem *regs)
 498 {
 499         u32 i;
 500         u32 pcidata;
 501
 502         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
 503
 504         for (i = 0; i < 3; i++)
 505                 msleep(1000); /* sleep for 3 secs */
 506         pcidata  = 0;
 507         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
 508         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
 509         if (pcidata & 0x2) {
 510                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
 511                 pcidata &= ~0x2;
 512                 pci_write_config_dword(instance->pdev,
 513                                 MFI_1068_PCSR_OFFSET, pcidata);
 514
 515                 for (i = 0; i < 2; i++)
 516                         msleep(1000); /* need to wait 2 secs again */
 517
 518                 pcidata  = 0;
 519                 pci_read_config_dword(instance->pdev,
 520                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
 521                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
 522                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
 523                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
 524                         pcidata = 0;
 525                         pci_write_config_dword(instance->pdev,
 526                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
 527                 }
 528         }
 529         return 0;
 530 }
 531
 532 /**
 533  * megasas_check_reset_xscale - For controller reset check
 534  * @regs:                               MFI register set
 535  */
 536 static int
 537 megasas_check_reset_xscale(struct megasas_instance *instance,
 538                 struct megasas_register_set __iomem *regs)
 539 {
 540         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
 541             (le32_to_cpu(*instance->consumer) ==
 542                 MEGASAS_ADPRESET_INPROG_SIGN))
 543                 return 1;
 544         return 0;
 545 }
 546
 547 static struct megasas_instance_template megasas_instance_template_xscale = {
 548
 549         .fire_cmd = megasas_fire_cmd_xscale,
 550         .enable_intr = megasas_enable_intr_xscale,
 551         .disable_intr = megasas_disable_intr_xscale,
 552         .clear_intr = megasas_clear_intr_xscale,
 553         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 554         .adp_reset = megasas_adp_reset_xscale,
 555         .check_reset = megasas_check_reset_xscale,
 556         .service_isr = megasas_isr,
 557         .tasklet = megasas_complete_cmd_dpc,
 558         .init_adapter = megasas_init_adapter_mfi,
 559         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 560         .issue_dcmd = megasas_issue_dcmd,
 561 };
 562
 563 /**
 564 *       This is the end of set of functions & definitions specific
 565 *       to xscale (deviceid : 1064R, PERC5) controllers
 566 */
 567
 568 /**
 569 *       The following functions are defined for ppc (deviceid : 0x60)
 570 *       controllers
 571 */
 572
 573 /**
 574  * megasas_enable_intr_ppc -    Enables interrupts
 575  * @regs:                       MFI register set
 576  */
 577 static inline void
 578 megasas_enable_intr_ppc(struct megasas_instance *instance)
 579 {
 580         struct megasas_register_set __iomem *regs;
 581
 582         regs = instance->reg_set;
 583         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 584
 585         writel(~0x80000000, &(regs)->outbound_intr_mask);
 586
 587         /* Dummy readl to force pci flush */
 588         readl(&regs->outbound_intr_mask);
 589 }
 590
 591 /**
 592  * megasas_disable_intr_ppc -   Disable interrupt
 593  * @regs:                       MFI register set
 594  */
 595 static inline void
 596 megasas_disable_intr_ppc(struct megasas_instance *instance)
 597 {
 598         struct megasas_register_set __iomem *regs;
 599         u32 mask = 0xFFFFFFFF;
 600
 601         regs = instance->reg_set;
 602         writel(mask, &regs->outbound_intr_mask);
 603         /* Dummy readl to force pci flush */
 604         readl(&regs->outbound_intr_mask);
 605 }
 606
 607 /**
 608  * megasas_read_fw_status_reg_ppc - returns the current FW status value
 609  * @regs:                       MFI register set
 610  */
 611 static u32
 612 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
 613 {
 614         return readl(&instance->reg_set->outbound_scratch_pad_0);
 615 }
 616
 617 /**
 618  * megasas_clear_interrupt_ppc -        Check & clear interrupt
 619  * @regs:                               MFI register set
 620  */
 621 static int
 622 megasas_clear_intr_ppc(struct megasas_instance *instance)
 623 {
 624         u32 status, mfiStatus = 0;
 625         struct megasas_register_set __iomem *regs;
 626         regs = instance->reg_set;
 627
 628         /*
 629          * Check if it is our interrupt
 630          */
 631         status = readl(&regs->outbound_intr_status);
 632
 633         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
 634                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 635
 636         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
 637                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 638
 639         /*
 640          * Clear the interrupt by writing back the same value
 641          */
 642         writel(status, &regs->outbound_doorbell_clear);
 643
 644         /* Dummy readl to force pci flush */
 645         readl(&regs->outbound_doorbell_clear);
 646
 647         return mfiStatus;
 648 }
 649
 650 /**
 651  * megasas_fire_cmd_ppc -       Sends command to the FW
 652  * @frame_phys_addr :           Physical address of cmd
 653  * @frame_count :               Number of frames for the command
 654  * @regs :                      MFI register set
 655  */
 656 static inline void
 657 megasas_fire_cmd_ppc(struct megasas_instance *instance,
 658                 dma_addr_t frame_phys_addr,
 659                 u32 frame_count,
 660                 struct megasas_register_set __iomem *regs)
 661 {
 662         unsigned long flags;
 663
 664         spin_lock_irqsave(&instance->hba_lock, flags);
 665         writel((frame_phys_addr | (frame_count<<1))|1,
 666                         &(regs)->inbound_queue_port);
 667         spin_unlock_irqrestore(&instance->hba_lock, flags);
 668 }
 669
 670 /**
 671  * megasas_check_reset_ppc -    For controller reset check
 672  * @regs:                               MFI register set
 673  */
 674 static int
 675 megasas_check_reset_ppc(struct megasas_instance *instance,
 676                         struct megasas_register_set __iomem *regs)
 677 {
 678         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 679                 return 1;
 680
 681         return 0;
 682 }
 683
 684 static struct megasas_instance_template megasas_instance_template_ppc = {
 685
 686         .fire_cmd = megasas_fire_cmd_ppc,
 687         .enable_intr = megasas_enable_intr_ppc,
 688         .disable_intr = megasas_disable_intr_ppc,
 689         .clear_intr = megasas_clear_intr_ppc,
 690         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 691         .adp_reset = megasas_adp_reset_xscale,
 692         .check_reset = megasas_check_reset_ppc,
 693         .service_isr = megasas_isr,
 694         .tasklet = megasas_complete_cmd_dpc,
 695         .init_adapter = megasas_init_adapter_mfi,
 696         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 697         .issue_dcmd = megasas_issue_dcmd,
 698 };
 699
 700 /**
 701  * megasas_enable_intr_skinny - Enables interrupts
 702  * @regs:                       MFI register set
 703  */
 704 static inline void
 705 megasas_enable_intr_skinny(struct megasas_instance *instance)
 706 {
 707         struct megasas_register_set __iomem *regs;
 708
 709         regs = instance->reg_set;
 710         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
 711
 712         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 713
 714         /* Dummy readl to force pci flush */
 715         readl(&regs->outbound_intr_mask);
 716 }
 717
 718 /**
 719  * megasas_disable_intr_skinny -        Disables interrupt
 720  * @regs:                       MFI register set
 721  */
 722 static inline void
 723 megasas_disable_intr_skinny(struct megasas_instance *instance)
 724 {
 725         struct megasas_register_set __iomem *regs;
 726         u32 mask = 0xFFFFFFFF;
 727
 728         regs = instance->reg_set;
 729         writel(mask, &regs->outbound_intr_mask);
 730         /* Dummy readl to force pci flush */
 731         readl(&regs->outbound_intr_mask);
 732 }
 733
 734 /**
 735  * megasas_read_fw_status_reg_skinny - returns the current FW status value
 736  * @regs:                       MFI register set
 737  */
 738 static u32
 739 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
 740 {
 741         return readl(&instance->reg_set->outbound_scratch_pad_0);
 742 }
 743
 744 /**
 745  * megasas_clear_interrupt_skinny -     Check & clear interrupt
 746  * @regs:                               MFI register set
 747  */
 748 static int
 749 megasas_clear_intr_skinny(struct megasas_instance *instance)
 750 {
 751         u32 status;
 752         u32 mfiStatus = 0;
 753         struct megasas_register_set __iomem *regs;
 754         regs = instance->reg_set;
 755
 756         /*
 757          * Check if it is our interrupt
 758          */
 759         status = readl(&regs->outbound_intr_status);
 760
 761         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
 762                 return 0;
 763         }
 764
 765         /*
 766          * Check if it is our interrupt
 767          */
 768         if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
 769             MFI_STATE_FAULT) {
 770                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 771         } else
 772                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 773
 774         /*
 775          * Clear the interrupt by writing back the same value
 776          */
 777         writel(status, &regs->outbound_intr_status);
 778
 779         /*
 780          * dummy read to flush PCI
 781          */
 782         readl(&regs->outbound_intr_status);
 783
 784         return mfiStatus;
 785 }
 786
 787 /**
 788  * megasas_fire_cmd_skinny -    Sends command to the FW
 789  * @frame_phys_addr :           Physical address of cmd
 790  * @frame_count :               Number of frames for the command
 791  * @regs :                      MFI register set
 792  */
 793 static inline void
 794 megasas_fire_cmd_skinny(struct megasas_instance *instance,
 795                         dma_addr_t frame_phys_addr,
 796                         u32 frame_count,
 797                         struct megasas_register_set __iomem *regs)
 798 {
 799         unsigned long flags;
 800
 801         spin_lock_irqsave(&instance->hba_lock, flags);
 802         writel(upper_32_bits(frame_phys_addr),
 803                &(regs)->inbound_high_queue_port);
 804         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
 805                &(regs)->inbound_low_queue_port);
 806         spin_unlock_irqrestore(&instance->hba_lock, flags);
 807 }
 808
 809 /**
 810  * megasas_check_reset_skinny - For controller reset check
 811  * @regs:                               MFI register set
 812  */
 813 static int
 814 megasas_check_reset_skinny(struct megasas_instance *instance,
 815                                 struct megasas_register_set __iomem *regs)
 816 {
 817         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 818                 return 1;
 819
 820         return 0;
 821 }
 822
 823 static struct megasas_instance_template megasas_instance_template_skinny = {
 824
 825         .fire_cmd = megasas_fire_cmd_skinny,
 826         .enable_intr = megasas_enable_intr_skinny,
 827         .disable_intr = megasas_disable_intr_skinny,
 828         .clear_intr = megasas_clear_intr_skinny,
 829         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
 830         .adp_reset = megasas_adp_reset_gen2,
 831         .check_reset = megasas_check_reset_skinny,
 832         .service_isr = megasas_isr,
 833         .tasklet = megasas_complete_cmd_dpc,
 834         .init_adapter = megasas_init_adapter_mfi,
 835         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 836         .issue_dcmd = megasas_issue_dcmd,
 837 };
 838
 839
 840 /**
 841 *       The following functions are defined for gen2 (deviceid : 0x78 0x79)
 842 *       controllers
 843 */
 844
 845 /**
 846  * megasas_enable_intr_gen2 -  Enables interrupts
 847  * @regs:                      MFI register set
 848  */
 849 static inline void
 850 megasas_enable_intr_gen2(struct megasas_instance *instance)
 851 {
 852         struct megasas_register_set __iomem *regs;
 853
 854         regs = instance->reg_set;
 855         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 856
 857         /* write ~0x00000005 (4 & 1) to the intr mask*/
 858         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 859
 860         /* Dummy readl to force pci flush */
 861         readl(&regs->outbound_intr_mask);
 862 }
 863
 864 /**
 865  * megasas_disable_intr_gen2 - Disables interrupt
 866  * @regs:                      MFI register set
 867  */
 868 static inline void
 869 megasas_disable_intr_gen2(struct megasas_instance *instance)
 870 {
 871         struct megasas_register_set __iomem *regs;
 872         u32 mask = 0xFFFFFFFF;
 873
 874         regs = instance->reg_set;
 875         writel(mask, &regs->outbound_intr_mask);
 876         /* Dummy readl to force pci flush */
 877         readl(&regs->outbound_intr_mask);
 878 }
 879
 880 /**
 881  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 882  * @regs:                      MFI register set
 883  */
 884 static u32
 885 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
 886 {
 887         return readl(&instance->reg_set->outbound_scratch_pad_0);
 888 }
 889
 890 /**
 891  * megasas_clear_interrupt_gen2 -      Check & clear interrupt
 892  * @regs:                              MFI register set
 893  */
 894 static int
 895 megasas_clear_intr_gen2(struct megasas_instance *instance)
 896 {
 897         u32 status;
 898         u32 mfiStatus = 0;
 899         struct megasas_register_set __iomem *regs;
 900         regs = instance->reg_set;
 901
 902         /*
 903          * Check if it is our interrupt
 904          */
 905         status = readl(&regs->outbound_intr_status);
 906
 907         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
 908                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 909         }
 910         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
 911                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 912         }
 913
 914         /*
 915          * Clear the interrupt by writing back the same value
 916          */
 917         if (mfiStatus)
 918                 writel(status, &regs->outbound_doorbell_clear);
 919
 920         /* Dummy readl to force pci flush */
 921         readl(&regs->outbound_intr_status);
 922
 923         return mfiStatus;
 924 }
 925 /**
 926  * megasas_fire_cmd_gen2 -     Sends command to the FW
 927  * @frame_phys_addr :          Physical address of cmd
 928  * @frame_count :              Number of frames for the command
 929  * @regs :                     MFI register set
 930  */
 931 static inline void
 932 megasas_fire_cmd_gen2(struct megasas_instance *instance,
 933                         dma_addr_t frame_phys_addr,
 934                         u32 frame_count,
 935                         struct megasas_register_set __iomem *regs)
 936 {
 937         unsigned long flags;
 938
 939         spin_lock_irqsave(&instance->hba_lock, flags);
 940         writel((frame_phys_addr | (frame_count<<1))|1,
 941                         &(regs)->inbound_queue_port);
 942         spin_unlock_irqrestore(&instance->hba_lock, flags);
 943 }
 944
 945 /**
 946  * megasas_adp_reset_gen2 -     For controller reset
 947  * @regs:                               MFI register set
 948  */
 949 static int
 950 megasas_adp_reset_gen2(struct megasas_instance *instance,
 951                         struct megasas_register_set __iomem *reg_set)
 952 {
 953         u32 retry = 0 ;
 954         u32 HostDiag;
 955         u32 __iomem *seq_offset = &reg_set->seq_offset;
 956         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
 957
 958         if (instance->instancet == &megasas_instance_template_skinny) {
 959                 seq_offset = &reg_set->fusion_seq_offset;
 960                 hostdiag_offset = &reg_set->fusion_host_diag;
 961         }
 962
 963         writel(0, seq_offset);
 964         writel(4, seq_offset);
 965         writel(0xb, seq_offset);
 966         writel(2, seq_offset);
 967         writel(7, seq_offset);
 968         writel(0xd, seq_offset);
 969
 970         msleep(1000);
 971
 972         HostDiag = (u32)readl(hostdiag_offset);
 973
 974         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
 975                 msleep(100);
 976                 HostDiag = (u32)readl(hostdiag_offset);
 977                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
 978                                         retry, HostDiag);
 979
 980                 if (retry++ >= 100)
 981                         return 1;
 982
 983         }
 984
 985         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
 986
 987         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
 988
 989         ssleep(10);
 990
 991         HostDiag = (u32)readl(hostdiag_offset);
 992         while (HostDiag & DIAG_RESET_ADAPTER) {
 993                 msleep(100);
 994                 HostDiag = (u32)readl(hostdiag_offset);
 995                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
 996                                 retry, HostDiag);
 997
 998                 if (retry++ >= 1000)
 999                         return 1;
1000
1001         }
1002         return 0;
1003 }
1004
1005 /**
1006  * megasas_check_reset_gen2 -   For controller reset check
1007  * @regs:                               MFI register set
1008  */
1009 static int
1010 megasas_check_reset_gen2(struct megasas_instance *instance,
1011                 struct megasas_register_set __iomem *regs)
1012 {
1013         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1014                 return 1;
1015
1016         return 0;
1017 }
1018
1019 static struct megasas_instance_template megasas_instance_template_gen2 = {
1020
1021         .fire_cmd = megasas_fire_cmd_gen2,
1022         .enable_intr = megasas_enable_intr_gen2,
1023         .disable_intr = megasas_disable_intr_gen2,
1024         .clear_intr = megasas_clear_intr_gen2,
1025         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1026         .adp_reset = megasas_adp_reset_gen2,
1027         .check_reset = megasas_check_reset_gen2,
1028         .service_isr = megasas_isr,
1029         .tasklet = megasas_complete_cmd_dpc,
1030         .init_adapter = megasas_init_adapter_mfi,
1031         .build_and_issue_cmd = megasas_build_and_issue_cmd,
1032         .issue_dcmd = megasas_issue_dcmd,
1033 };
1034
1035 /**
1036 *       This is the end of set of functions & definitions
1037 *       specific to gen2 (deviceid : 0x78, 0x79) controllers
1038 */
1039
1040 /*
1041  * Template added for TB (Fusion)
1042  */
1043 extern struct megasas_instance_template megasas_instance_template_fusion;
1044
1045 /**
1046  * megasas_issue_polled -       Issues a polling command
1047  * @instance:                   Adapter soft state
1048  * @cmd:                        Command packet to be issued
1049  *
1050  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1051  */
1052 int
1053 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1054 {
1055         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1056
1057         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1058         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1059
1060         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1061                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1062                         __func__, __LINE__);
1063                 return DCMD_NOT_FIRED;
1064         }
1065
1066         instance->instancet->issue_dcmd(instance, cmd);
1067
1068         return wait_and_poll(instance, cmd, instance->requestorId ?
1069                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1070 }
1071
1072 /**
1073  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1074  * @instance:                   Adapter soft state
1075  * @cmd:                        Command to be issued
1076  * @timeout:                    Timeout in seconds
1077  *
1078  * This function waits on an event for the command to be returned from ISR.
1079  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1080  * Used to issue ioctl commands.
1081  */
1082 int
1083 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1084                           struct megasas_cmd *cmd, int timeout)
1085 {
1086         int ret = 0;
1087         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1088
1089         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1090                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1091                         __func__, __LINE__);
1092                 return DCMD_NOT_FIRED;
1093         }
1094
1095         instance->instancet->issue_dcmd(instance, cmd);
1096
1097         if (timeout) {
1098                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1099                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1100                 if (!ret) {
1101                         dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
1102                                 __func__, __LINE__);
1103                         return DCMD_TIMEOUT;
1104                 }
1105         } else
1106                 wait_event(instance->int_cmd_wait_q,
1107                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1108
1109         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1110                 DCMD_SUCCESS : DCMD_FAILED;
1111 }
1112
1113 /**
1114  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1115  * @instance:                           Adapter soft state
1116  * @cmd_to_abort:                       Previously issued cmd to be aborted
1117  * @timeout:                            Timeout in seconds
1118  *
1119  * MFI firmware can abort previously issued AEN comamnd (automatic event
1120  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1121  * cmd and waits for return status.
1122  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1123  */
1124 static int
1125 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1126                                 struct megasas_cmd *cmd_to_abort, int timeout)
1127 {
1128         struct megasas_cmd *cmd;
1129         struct megasas_abort_frame *abort_fr;
1130         int ret = 0;
1131
1132         cmd = megasas_get_cmd(instance);
1133
1134         if (!cmd)
1135                 return -1;
1136
1137         abort_fr = &cmd->frame->abort;
1138
1139         /*
1140          * Prepare and issue the abort frame
1141          */
1142         abort_fr->cmd = MFI_CMD_ABORT;
1143         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1144         abort_fr->flags = cpu_to_le16(0);
1145         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1146         abort_fr->abort_mfi_phys_addr_lo =
1147                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1148         abort_fr->abort_mfi_phys_addr_hi =
1149                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1150
1151         cmd->sync_cmd = 1;
1152         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1153
1154         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1155                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1156                         __func__, __LINE__);
1157                 return DCMD_NOT_FIRED;
1158         }
1159
1160         instance->instancet->issue_dcmd(instance, cmd);
1161
1162         if (timeout) {
1163                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1164                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1165                 if (!ret) {
1166                         dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
1167                                 __func__, __LINE__);
1168                         return DCMD_TIMEOUT;
1169                 }
1170         } else
1171                 wait_event(instance->abort_cmd_wait_q,
1172                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1173
1174         cmd->sync_cmd = 0;
1175
1176         megasas_return_cmd(instance, cmd);
1177         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1178                 DCMD_SUCCESS : DCMD_FAILED;
1179 }
1180
1181 /**
1182  * megasas_make_sgl32 - Prepares 32-bit SGL
1183  * @instance:           Adapter soft state
1184  * @scp:                SCSI command from the mid-layer
1185  * @mfi_sgl:            SGL to be filled in
1186  *
1187  * If successful, this function returns the number of SG elements. Otherwise,
1188  * it returnes -1.
1189  */
1190 static int
1191 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1192                    union megasas_sgl *mfi_sgl)
1193 {
1194         int i;
1195         int sge_count;
1196         struct scatterlist *os_sgl;
1197
1198         sge_count = scsi_dma_map(scp);
1199         BUG_ON(sge_count < 0);
1200
1201         if (sge_count) {
1202                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1203                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1204                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1205                 }
1206         }
1207         return sge_count;
1208 }
1209
1210 /**
1211  * megasas_make_sgl64 - Prepares 64-bit SGL
1212  * @instance:           Adapter soft state
1213  * @scp:                SCSI command from the mid-layer
1214  * @mfi_sgl:            SGL to be filled in
1215  *
1216  * If successful, this function returns the number of SG elements. Otherwise,
1217  * it returnes -1.
1218  */
1219 static int
1220 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1221                    union megasas_sgl *mfi_sgl)
1222 {
1223         int i;
1224         int sge_count;
1225         struct scatterlist *os_sgl;
1226
1227         sge_count = scsi_dma_map(scp);
1228         BUG_ON(sge_count < 0);
1229
1230         if (sge_count) {
1231                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1232                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1233                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1234                 }
1235         }
1236         return sge_count;
1237 }
1238
1239 /**
1240  * megasas_make_sgl_skinny - Prepares IEEE SGL
1241  * @instance:           Adapter soft state
1242  * @scp:                SCSI command from the mid-layer
1243  * @mfi_sgl:            SGL to be filled in
1244  *
1245  * If successful, this function returns the number of SG elements. Otherwise,
1246  * it returnes -1.
1247  */
1248 static int
1249 megasas_make_sgl_skinny(struct megasas_instance *instance,
1250                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1251 {
1252         int i;
1253         int sge_count;
1254         struct scatterlist *os_sgl;
1255
1256         sge_count = scsi_dma_map(scp);
1257
1258         if (sge_count) {
1259                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1260                         mfi_sgl->sge_skinny[i].length =
1261                                 cpu_to_le32(sg_dma_len(os_sgl));
1262                         mfi_sgl->sge_skinny[i].phys_addr =
1263                                 cpu_to_le64(sg_dma_address(os_sgl));
1264                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1265                 }
1266         }
1267         return sge_count;
1268 }
1269
1270  /**
1271  * megasas_get_frame_count - Computes the number of frames
1272  * @frame_type          : type of frame- io or pthru frame
1273  * @sge_count           : number of sg elements
1274  *
1275  * Returns the number of frames required for numnber of sge's (sge_count)
1276  */
1277
1278 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1279                         u8 sge_count, u8 frame_type)
1280 {
1281         int num_cnt;
1282         int sge_bytes;
1283         u32 sge_sz;
1284         u32 frame_count = 0;
1285
1286         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1287             sizeof(struct megasas_sge32);
1288
1289         if (instance->flag_ieee) {
1290                 sge_sz = sizeof(struct megasas_sge_skinny);
1291         }
1292
1293         /*
1294          * Main frame can contain 2 SGEs for 64-bit SGLs and
1295          * 3 SGEs for 32-bit SGLs for ldio &
1296          * 1 SGEs for 64-bit SGLs and
1297          * 2 SGEs for 32-bit SGLs for pthru frame
1298          */
1299         if (unlikely(frame_type == PTHRU_FRAME)) {
1300                 if (instance->flag_ieee == 1) {
1301                         num_cnt = sge_count - 1;
1302                 } else if (IS_DMA64)
1303                         num_cnt = sge_count - 1;
1304                 else
1305                         num_cnt = sge_count - 2;
1306         } else {
1307                 if (instance->flag_ieee == 1) {
1308                         num_cnt = sge_count - 1;
1309                 } else if (IS_DMA64)
1310                         num_cnt = sge_count - 2;
1311                 else
1312                         num_cnt = sge_count - 3;
1313         }
1314
1315         if (num_cnt > 0) {
1316                 sge_bytes = sge_sz * num_cnt;
1317
1318                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1319                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1320         }
1321         /* Main frame */
1322         frame_count += 1;
1323
1324         if (frame_count > 7)
1325                 frame_count = 8;
1326         return frame_count;
1327 }
1328
1329 /**
1330  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1331  * @instance:           Adapter soft state
1332  * @scp:                SCSI command
1333  * @cmd:                Command to be prepared in
1334  *
1335  * This function prepares CDB commands. These are typcially pass-through
1336  * commands to the devices.
1337  */
1338 static int
1339 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1340                    struct megasas_cmd *cmd)
1341 {
1342         u32 is_logical;
1343         u32 device_id;
1344         u16 flags = 0;
1345         struct megasas_pthru_frame *pthru;
1346
1347         is_logical = MEGASAS_IS_LOGICAL(scp->device);
1348         device_id = MEGASAS_DEV_INDEX(scp);
1349         pthru = (struct megasas_pthru_frame *)cmd->frame;
1350
1351         if (scp->sc_data_direction == DMA_TO_DEVICE)
1352                 flags = MFI_FRAME_DIR_WRITE;
1353         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1354                 flags = MFI_FRAME_DIR_READ;
1355         else if (scp->sc_data_direction == DMA_NONE)
1356                 flags = MFI_FRAME_DIR_NONE;
1357
1358         if (instance->flag_ieee == 1) {
1359                 flags |= MFI_FRAME_IEEE;
1360         }
1361
1362         /*
1363          * Prepare the DCDB frame
1364          */
1365         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1366         pthru->cmd_status = 0x0;
1367         pthru->scsi_status = 0x0;
1368         pthru->target_id = device_id;
1369         pthru->lun = scp->device->lun;
1370         pthru->cdb_len = scp->cmd_len;
1371         pthru->timeout = 0;
1372         pthru->pad_0 = 0;
1373         pthru->flags = cpu_to_le16(flags);
1374         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1375
1376         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1377
1378         /*
1379          * If the command is for the tape device, set the
1380          * pthru timeout to the os layer timeout value.
1381          */
1382         if (scp->device->type == TYPE_TAPE) {
1383                 if ((scp->request->timeout / HZ) > 0xFFFF)
1384                         pthru->timeout = cpu_to_le16(0xFFFF);
1385                 else
1386                         pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1387         }
1388
1389         /*
1390          * Construct SGL
1391          */
1392         if (instance->flag_ieee == 1) {
1393                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1394                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1395                                                       &pthru->sgl);
1396         } else if (IS_DMA64) {
1397                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1398                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1399                                                       &pthru->sgl);
1400         } else
1401                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1402                                                       &pthru->sgl);
1403
1404         if (pthru->sge_count > instance->max_num_sge) {
1405                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1406                         pthru->sge_count);
1407                 return 0;
1408         }
1409
1410         /*
1411          * Sense info specific
1412          */
1413         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1414         pthru->sense_buf_phys_addr_hi =
1415                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1416         pthru->sense_buf_phys_addr_lo =
1417                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1418
1419         /*
1420          * Compute the total number of frames this command consumes. FW uses
1421          * this number to pull sufficient number of frames from host memory.
1422          */
1423         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1424                                                         PTHRU_FRAME);
1425
1426         return cmd->frame_count;
1427 }
1428
1429 /**
1430  * megasas_build_ldio - Prepares IOs to logical devices
1431  * @instance:           Adapter soft state
1432  * @scp:                SCSI command
1433  * @cmd:                Command to be prepared
1434  *
1435  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1436  */
1437 static int
1438 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1439                    struct megasas_cmd *cmd)
1440 {
1441         u32 device_id;
1442         u8 sc = scp->cmnd[0];
1443         u16 flags = 0;
1444         struct megasas_io_frame *ldio;
1445
1446         device_id = MEGASAS_DEV_INDEX(scp);
1447         ldio = (struct megasas_io_frame *)cmd->frame;
1448
1449         if (scp->sc_data_direction == DMA_TO_DEVICE)
1450                 flags = MFI_FRAME_DIR_WRITE;
1451         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1452                 flags = MFI_FRAME_DIR_READ;
1453
1454         if (instance->flag_ieee == 1) {
1455                 flags |= MFI_FRAME_IEEE;
1456         }
1457
1458         /*
1459          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1460          */
1461         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1462         ldio->cmd_status = 0x0;
1463         ldio->scsi_status = 0x0;
1464         ldio->target_id = device_id;
1465         ldio->timeout = 0;
1466         ldio->reserved_0 = 0;
1467         ldio->pad_0 = 0;
1468         ldio->flags = cpu_to_le16(flags);
1469         ldio->start_lba_hi = 0;
1470         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1471
1472         /*
1473          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1474          */
1475         if (scp->cmd_len == 6) {
1476                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1477                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1478                                                  ((u32) scp->cmnd[2] << 8) |
1479                                                  (u32) scp->cmnd[3]);
1480
1481                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1482         }
1483
1484         /*
1485          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1486          */
1487         else if (scp->cmd_len == 10) {
1488                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1489                                               ((u32) scp->cmnd[7] << 8));
1490                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1491                                                  ((u32) scp->cmnd[3] << 16) |
1492                                                  ((u32) scp->cmnd[4] << 8) |
1493                                                  (u32) scp->cmnd[5]);
1494         }
1495
1496         /*
1497          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1498          */
1499         else if (scp->cmd_len == 12) {
1500                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1501                                               ((u32) scp->cmnd[7] << 16) |
1502                                               ((u32) scp->cmnd[8] << 8) |
1503                                               (u32) scp->cmnd[9]);
1504
1505                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1506                                                  ((u32) scp->cmnd[3] << 16) |
1507                                                  ((u32) scp->cmnd[4] << 8) |
1508                                                  (u32) scp->cmnd[5]);
1509         }
1510
1511         /*
1512          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1513          */
1514         else if (scp->cmd_len == 16) {
1515                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1516                                               ((u32) scp->cmnd[11] << 16) |
1517                                               ((u32) scp->cmnd[12] << 8) |
1518                                               (u32) scp->cmnd[13]);
1519
1520                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1521                                                  ((u32) scp->cmnd[7] << 16) |
1522                                                  ((u32) scp->cmnd[8] << 8) |
1523                                                  (u32) scp->cmnd[9]);
1524
1525                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1526                                                  ((u32) scp->cmnd[3] << 16) |
1527                                                  ((u32) scp->cmnd[4] << 8) |
1528                                                  (u32) scp->cmnd[5]);
1529
1530         }
1531
1532         /*
1533          * Construct SGL
1534          */
1535         if (instance->flag_ieee) {
1536                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1537                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1538                                               &ldio->sgl);
1539         } else if (IS_DMA64) {
1540                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1541                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1542         } else
1543                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1544
1545         if (ldio->sge_count > instance->max_num_sge) {
1546                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1547                         ldio->sge_count);
1548                 return 0;
1549         }
1550
1551         /*
1552          * Sense info specific
1553          */
1554         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1555         ldio->sense_buf_phys_addr_hi = 0;
1556         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1557
1558         /*
1559          * Compute the total number of frames this command consumes. FW uses
1560          * this number to pull sufficient number of frames from host memory.
1561          */
1562         cmd->frame_count = megasas_get_frame_count(instance,
1563                         ldio->sge_count, IO_FRAME);
1564
1565         return cmd->frame_count;
1566 }
1567
1568 /**
1569  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1570  *                              and whether it's RW or non RW
1571  * @scmd:                       SCSI command
1572  *
1573  */
1574 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1575 {
1576         int ret;
1577
1578         switch (cmd->cmnd[0]) {
1579         case READ_10:
1580         case WRITE_10:
1581         case READ_12:
1582         case WRITE_12:
1583         case READ_6:
1584         case WRITE_6:
1585         case READ_16:
1586         case WRITE_16:
1587                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1588                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1589                 break;
1590         default:
1591                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1592                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1593         }
1594         return ret;
1595 }
1596
1597  /**
1598  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1599  *                                      in FW
1600  * @instance:                           Adapter soft state
1601  */
1602 static inline void
1603 megasas_dump_pending_frames(struct megasas_instance *instance)
1604 {
1605         struct megasas_cmd *cmd;
1606         int i,n;
1607         union megasas_sgl *mfi_sgl;
1608         struct megasas_io_frame *ldio;
1609         struct megasas_pthru_frame *pthru;
1610         u32 sgcount;
1611         u16 max_cmd = instance->max_fw_cmds;
1612
1613         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1614         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1615         if (IS_DMA64)
1616                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1617         else
1618                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1619
1620         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1621         for (i = 0; i < max_cmd; i++) {
1622                 cmd = instance->cmd_list[i];
1623                 if (!cmd->scmd)
1624                         continue;
1625                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1626                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1627                         ldio = (struct megasas_io_frame *)cmd->frame;
1628                         mfi_sgl = &ldio->sgl;
1629                         sgcount = ldio->sge_count;
1630                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1631                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1632                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1633                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1634                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1635                 } else {
1636                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1637                         mfi_sgl = &pthru->sgl;
1638                         sgcount = pthru->sge_count;
1639                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1640                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1641                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1642                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1643                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1644                 }
1645                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1646                         for (n = 0; n < sgcount; n++) {
1647                                 if (IS_DMA64)
1648                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1649                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1650                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1651                                 else
1652                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1653                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1654                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1655                         }
1656                 }
1657         } /*for max_cmd*/
1658         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1659         for (i = 0; i < max_cmd; i++) {
1660
1661                 cmd = instance->cmd_list[i];
1662
1663                 if (cmd->sync_cmd == 1)
1664                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1665         }
1666         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1667 }
1668
1669 u32
1670 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1671                             struct scsi_cmnd *scmd)
1672 {
1673         struct megasas_cmd *cmd;
1674         u32 frame_count;
1675
1676         cmd = megasas_get_cmd(instance);
1677         if (!cmd)
1678                 return SCSI_MLQUEUE_HOST_BUSY;
1679
1680         /*
1681          * Logical drive command
1682          */
1683         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1684                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1685         else
1686                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1687
1688         if (!frame_count)
1689                 goto out_return_cmd;
1690
1691         cmd->scmd = scmd;
1692         scmd->SCp.ptr = (char *)cmd;
1693
1694         /*
1695          * Issue the command to the FW
1696          */
1697         atomic_inc(&instance->fw_outstanding);
1698
1699         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1700                                 cmd->frame_count-1, instance->reg_set);
1701
1702         return 0;
1703 out_return_cmd:
1704         megasas_return_cmd(instance, cmd);
1705         return SCSI_MLQUEUE_HOST_BUSY;
1706 }
1707
1708
1709 /**
1710  * megasas_queue_command -      Queue entry point
1711  * @scmd:                       SCSI command to be queued
1712  * @done:                       Callback entry point
1713  */
1714 static int
1715 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1716 {
1717         struct megasas_instance *instance;
1718         struct MR_PRIV_DEVICE *mr_device_priv_data;
1719
1720         instance = (struct megasas_instance *)
1721             scmd->device->host->hostdata;
1722
1723         if (instance->unload == 1) {
1724                 scmd->result = DID_NO_CONNECT << 16;
1725                 scmd->scsi_done(scmd);
1726                 return 0;
1727         }
1728
1729         if (instance->issuepend_done == 0)
1730                 return SCSI_MLQUEUE_HOST_BUSY;
1731
1732
1733         /* Check for an mpio path and adjust behavior */
1734         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1735                 if (megasas_check_mpio_paths(instance, scmd) ==
1736                     (DID_REQUEUE << 16)) {
1737                         return SCSI_MLQUEUE_HOST_BUSY;
1738                 } else {
1739                         scmd->result = DID_NO_CONNECT << 16;
1740                         scmd->scsi_done(scmd);
1741                         return 0;
1742                 }
1743         }
1744
1745         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1746                 scmd->result = DID_NO_CONNECT << 16;
1747                 scmd->scsi_done(scmd);
1748                 return 0;
1749         }
1750
1751         mr_device_priv_data = scmd->device->hostdata;
1752         if (!mr_device_priv_data) {
1753                 scmd->result = DID_NO_CONNECT << 16;
1754                 scmd->scsi_done(scmd);
1755                 return 0;
1756         }
1757
1758         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1759                 return SCSI_MLQUEUE_HOST_BUSY;
1760
1761         if (mr_device_priv_data->tm_busy)
1762                 return SCSI_MLQUEUE_DEVICE_BUSY;
1763
1764
1765         scmd->result = 0;
1766
1767         if (MEGASAS_IS_LOGICAL(scmd->device) &&
1768             (scmd->device->id >= instance->fw_supported_vd_count ||
1769                 scmd->device->lun)) {
1770                 scmd->result = DID_BAD_TARGET << 16;
1771                 goto out_done;
1772         }
1773
1774         if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1775             MEGASAS_IS_LOGICAL(scmd->device) &&
1776             (!instance->fw_sync_cache_support)) {
1777                 scmd->result = DID_OK << 16;
1778                 goto out_done;
1779         }
1780
1781         return instance->instancet->build_and_issue_cmd(instance, scmd);
1782
1783  out_done:
1784         scmd->scsi_done(scmd);
1785         return 0;
1786 }
1787
1788 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1789 {
1790         int i;
1791
1792         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1793
1794                 if ((megasas_mgmt_info.instance[i]) &&
1795                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1796                         return megasas_mgmt_info.instance[i];
1797         }
1798
1799         return NULL;
1800 }
1801
1802 /*
1803 * megasas_set_dynamic_target_properties -
1804 * Device property set by driver may not be static and it is required to be
1805 * updated after OCR
1806 *
1807 * set tm_capable.
1808 * set dma alignment (only for eedp protection enable vd).
1809 *
1810 * @sdev: OS provided scsi device
1811 *
1812 * Returns void
1813 */
1814 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1815                                            bool is_target_prop)
1816 {
1817         u16 pd_index = 0, ld;
1818         u32 device_id;
1819         struct megasas_instance *instance;
1820         struct fusion_context *fusion;
1821         struct MR_PRIV_DEVICE *mr_device_priv_data;
1822         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1823         struct MR_LD_RAID *raid;
1824         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1825
1826         instance = megasas_lookup_instance(sdev->host->host_no);
1827         fusion = instance->ctrl_context;
1828         mr_device_priv_data = sdev->hostdata;
1829
1830         if (!fusion || !mr_device_priv_data)
1831                 return;
1832
1833         if (MEGASAS_IS_LOGICAL(sdev)) {
1834                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1835                                         + sdev->id;
1836                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1837                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1838                 if (ld >= instance->fw_supported_vd_count)
1839                         return;
1840                 raid = MR_LdRaidGet(ld, local_map_ptr);
1841
1842                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1843                 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1844
1845                 mr_device_priv_data->is_tm_capable =
1846                         raid->capability.tmCapable;
1847         } else if (instance->use_seqnum_jbod_fp) {
1848                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1849                         sdev->id;
1850                 pd_sync = (void *)fusion->pd_seq_sync
1851                                 [(instance->pd_seq_map_id - 1) & 1];
1852                 mr_device_priv_data->is_tm_capable =
1853                         pd_sync->seq[pd_index].capability.tmCapable;
1854         }
1855
1856         if (is_target_prop && instance->tgt_prop->reset_tmo) {
1857                 /*
1858                  * If FW provides a target reset timeout value, driver will use
1859                  * it. If not set, fallback to default values.
1860                  */
1861                 mr_device_priv_data->target_reset_tmo =
1862                         min_t(u8, instance->max_reset_tmo,
1863                               instance->tgt_prop->reset_tmo);
1864                 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1865         } else {
1866                 mr_device_priv_data->target_reset_tmo =
1867                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1868                 mr_device_priv_data->task_abort_tmo =
1869                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1870         }
1871 }
1872
1873 /*
1874  * megasas_set_nvme_device_properties -
1875  * set nomerges=2
1876  * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1877  * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1878  *
1879  * MR firmware provides value in KB. Caller of this function converts
1880  * kb into bytes.
1881  *
1882  * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1883  * MR firmware provides value 128 as (32 * 4K) = 128K.
1884  *
1885  * @sdev:                               scsi device
1886  * @max_io_size:                                maximum io transfer size
1887  *
1888  */
1889 static inline void
1890 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1891 {
1892         struct megasas_instance *instance;
1893         u32 mr_nvme_pg_size;
1894
1895         instance = (struct megasas_instance *)sdev->host->hostdata;
1896         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1897                                 MR_DEFAULT_NVME_PAGE_SIZE);
1898
1899         blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1900
1901         blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1902         blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1903 }
1904
1905
1906 /*
1907  * megasas_set_static_target_properties -
1908  * Device property set by driver are static and it is not required to be
1909  * updated after OCR.
1910  *
1911  * set io timeout
1912  * set device queue depth
1913  * set nvme device properties. see - megasas_set_nvme_device_properties
1914  *
1915  * @sdev:                               scsi device
1916  * @is_target_prop                      true, if fw provided target properties.
1917  */
1918 static void megasas_set_static_target_properties(struct scsi_device *sdev,
1919                                                  bool is_target_prop)
1920 {
1921         u16     target_index = 0;
1922         u8 interface_type;
1923         u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1924         u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
1925         u32 tgt_device_qd;
1926         struct megasas_instance *instance;
1927         struct MR_PRIV_DEVICE *mr_device_priv_data;
1928
1929         instance = megasas_lookup_instance(sdev->host->host_no);
1930         mr_device_priv_data = sdev->hostdata;
1931         interface_type  = mr_device_priv_data->interface_type;
1932
1933         /*
1934          * The RAID firmware may require extended timeouts.
1935          */
1936         blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
1937
1938         target_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
1939
1940         switch (interface_type) {
1941         case SAS_PD:
1942                 device_qd = MEGASAS_SAS_QD;
1943                 break;
1944         case SATA_PD:
1945                 device_qd = MEGASAS_SATA_QD;
1946                 break;
1947         case NVME_PD:
1948                 device_qd = MEGASAS_NVME_QD;
1949                 break;
1950         }
1951
1952         if (is_target_prop) {
1953                 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1954                 if (tgt_device_qd &&
1955                     (tgt_device_qd <= instance->host->can_queue))
1956                         device_qd = tgt_device_qd;
1957
1958                 /* max_io_size_kb will be set to non zero for
1959                  * nvme based vd and syspd.
1960                  */
1961                 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
1962         }
1963
1964         if (instance->nvme_page_size && max_io_size_kb)
1965                 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
1966
1967         scsi_change_queue_depth(sdev, device_qd);
1968
1969 }
1970
1971
1972 static int megasas_slave_configure(struct scsi_device *sdev)
1973 {
1974         u16 pd_index = 0;
1975         struct megasas_instance *instance;
1976         int ret_target_prop = DCMD_FAILED;
1977         bool is_target_prop = false;
1978
1979         instance = megasas_lookup_instance(sdev->host->host_no);
1980         if (instance->pd_list_not_supported) {
1981                 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
1982                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1983                                 sdev->id;
1984                         if (instance->pd_list[pd_index].driveState !=
1985                                 MR_PD_STATE_SYSTEM)
1986                                 return -ENXIO;
1987                 }
1988         }
1989
1990         mutex_lock(&instance->reset_mutex);
1991         /* Send DCMD to Firmware and cache the information */
1992         if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
1993                 megasas_get_pd_info(instance, sdev);
1994
1995         /* Some ventura firmware may not have instance->nvme_page_size set.
1996          * Do not send MR_DCMD_DRV_GET_TARGET_PROP
1997          */
1998         if ((instance->tgt_prop) && (instance->nvme_page_size))
1999                 ret_target_prop = megasas_get_target_prop(instance, sdev);
2000
2001         is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2002         megasas_set_static_target_properties(sdev, is_target_prop);
2003
2004         /* This sdev property may change post OCR */
2005         megasas_set_dynamic_target_properties(sdev, is_target_prop);
2006
2007         mutex_unlock(&instance->reset_mutex);
2008
2009         return 0;
2010 }
2011
2012 static int megasas_slave_alloc(struct scsi_device *sdev)
2013 {
2014         u16 pd_index = 0;
2015         struct megasas_instance *instance ;
2016         struct MR_PRIV_DEVICE *mr_device_priv_data;
2017
2018         instance = megasas_lookup_instance(sdev->host->host_no);
2019         if (!MEGASAS_IS_LOGICAL(sdev)) {
2020                 /*
2021                  * Open the OS scan to the SYSTEM PD
2022                  */
2023                 pd_index =
2024                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2025                         sdev->id;
2026                 if ((instance->pd_list_not_supported ||
2027                         instance->pd_list[pd_index].driveState ==
2028                         MR_PD_STATE_SYSTEM)) {
2029                         goto scan_target;
2030                 }
2031                 return -ENXIO;
2032         }
2033
2034 scan_target:
2035         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2036                                         GFP_KERNEL);
2037         if (!mr_device_priv_data)
2038                 return -ENOMEM;
2039         sdev->hostdata = mr_device_priv_data;
2040
2041         atomic_set(&mr_device_priv_data->r1_ldio_hint,
2042                    instance->r1_ldio_hint_default);
2043         return 0;
2044 }
2045
2046 static void megasas_slave_destroy(struct scsi_device *sdev)
2047 {
2048         kfree(sdev->hostdata);
2049         sdev->hostdata = NULL;
2050 }
2051
2052 /*
2053 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2054 *                                       kill adapter
2055 * @instance:                            Adapter soft state
2056 *
2057 */
2058 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2059 {
2060         int i;
2061         struct megasas_cmd *cmd_mfi;
2062         struct megasas_cmd_fusion *cmd_fusion;
2063         struct fusion_context *fusion = instance->ctrl_context;
2064
2065         /* Find all outstanding ioctls */
2066         if (fusion) {
2067                 for (i = 0; i < instance->max_fw_cmds; i++) {
2068                         cmd_fusion = fusion->cmd_list[i];
2069                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2070                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2071                                 if (cmd_mfi->sync_cmd &&
2072                                     (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2073                                         cmd_mfi->frame->hdr.cmd_status =
2074                                                         MFI_STAT_WRONG_STATE;
2075                                         megasas_complete_cmd(instance,
2076                                                              cmd_mfi, DID_OK);
2077                                 }
2078                         }
2079                 }
2080         } else {
2081                 for (i = 0; i < instance->max_fw_cmds; i++) {
2082                         cmd_mfi = instance->cmd_list[i];
2083                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2084                                 MFI_CMD_ABORT)
2085                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2086                 }
2087         }
2088 }
2089
2090
2091 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2092 {
2093         /* Set critical error to block I/O & ioctls in case caller didn't */
2094         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2095         /* Wait 1 second to ensure IO or ioctls in build have posted */
2096         msleep(1000);
2097         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2098                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2099                 (instance->adapter_type != MFI_SERIES)) {
2100                 if (!instance->requestorId) {
2101                         writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2102                         /* Flush */
2103                         readl(&instance->reg_set->doorbell);
2104                 }
2105                 if (instance->requestorId && instance->peerIsPresent)
2106                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2107         } else {
2108                 writel(MFI_STOP_ADP,
2109                         &instance->reg_set->inbound_doorbell);
2110         }
2111         /* Complete outstanding ioctls when adapter is killed */
2112         megasas_complete_outstanding_ioctls(instance);
2113 }
2114
2115  /**
2116   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2117   *                                     restored to max value
2118   * @instance:                  Adapter soft state
2119   *
2120   */
2121 void
2122 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2123 {
2124         unsigned long flags;
2125
2126         if (instance->flag & MEGASAS_FW_BUSY
2127             && time_after(jiffies, instance->last_time + 5 * HZ)
2128             && atomic_read(&instance->fw_outstanding) <
2129             instance->throttlequeuedepth + 1) {
2130
2131                 spin_lock_irqsave(instance->host->host_lock, flags);
2132                 instance->flag &= ~MEGASAS_FW_BUSY;
2133
2134                 instance->host->can_queue = instance->cur_can_queue;
2135                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2136         }
2137 }
2138
2139 /**
2140  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2141  * @instance_addr:                      Address of adapter soft state
2142  *
2143  * Tasklet to complete cmds
2144  */
2145 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2146 {
2147         u32 producer;
2148         u32 consumer;
2149         u32 context;
2150         struct megasas_cmd *cmd;
2151         struct megasas_instance *instance =
2152                                 (struct megasas_instance *)instance_addr;
2153         unsigned long flags;
2154
2155         /* If we have already declared adapter dead, donot complete cmds */
2156         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2157                 return;
2158
2159         spin_lock_irqsave(&instance->completion_lock, flags);
2160
2161         producer = le32_to_cpu(*instance->producer);
2162         consumer = le32_to_cpu(*instance->consumer);
2163
2164         while (consumer != producer) {
2165                 context = le32_to_cpu(instance->reply_queue[consumer]);
2166                 if (context >= instance->max_fw_cmds) {
2167                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2168                                 context);
2169                         BUG();
2170                 }
2171
2172                 cmd = instance->cmd_list[context];
2173
2174                 megasas_complete_cmd(instance, cmd, DID_OK);
2175
2176                 consumer++;
2177                 if (consumer == (instance->max_fw_cmds + 1)) {
2178                         consumer = 0;
2179                 }
2180         }
2181
2182         *instance->consumer = cpu_to_le32(producer);
2183
2184         spin_unlock_irqrestore(&instance->completion_lock, flags);
2185
2186         /*
2187          * Check if we can restore can_queue
2188          */
2189         megasas_check_and_restore_queue_depth(instance);
2190 }
2191
2192 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2193
2194 /**
2195  * megasas_start_timer - Initializes sriov heartbeat timer object
2196  * @instance:           Adapter soft state
2197  *
2198  */
2199 void megasas_start_timer(struct megasas_instance *instance)
2200 {
2201         struct timer_list *timer = &instance->sriov_heartbeat_timer;
2202
2203         timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2204         timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2205         add_timer(timer);
2206 }
2207
2208 static void
2209 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2210
2211 static void
2212 process_fw_state_change_wq(struct work_struct *work);
2213
2214 void megasas_do_ocr(struct megasas_instance *instance)
2215 {
2216         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2217         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2218         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2219                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2220         }
2221         instance->instancet->disable_intr(instance);
2222         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2223         instance->issuepend_done = 0;
2224
2225         atomic_set(&instance->fw_outstanding, 0);
2226         megasas_internal_reset_defer_cmds(instance);
2227         process_fw_state_change_wq(&instance->work_init);
2228 }
2229
2230 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2231                                             int initial)
2232 {
2233         struct megasas_cmd *cmd;
2234         struct megasas_dcmd_frame *dcmd;
2235         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2236         dma_addr_t new_affiliation_111_h;
2237         int ld, retval = 0;
2238         u8 thisVf;
2239
2240         cmd = megasas_get_cmd(instance);
2241
2242         if (!cmd) {
2243                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2244                        "Failed to get cmd for scsi%d\n",
2245                         instance->host->host_no);
2246                 return -ENOMEM;
2247         }
2248
2249         dcmd = &cmd->frame->dcmd;
2250
2251         if (!instance->vf_affiliation_111) {
2252                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2253                        "affiliation for scsi%d\n", instance->host->host_no);
2254                 megasas_return_cmd(instance, cmd);
2255                 return -ENOMEM;
2256         }
2257
2258         if (initial)
2259                         memset(instance->vf_affiliation_111, 0,
2260                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2261         else {
2262                 new_affiliation_111 =
2263                         dma_alloc_coherent(&instance->pdev->dev,
2264                                            sizeof(struct MR_LD_VF_AFFILIATION_111),
2265                                            &new_affiliation_111_h, GFP_KERNEL);
2266                 if (!new_affiliation_111) {
2267                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2268                                "memory for new affiliation for scsi%d\n",
2269                                instance->host->host_no);
2270                         megasas_return_cmd(instance, cmd);
2271                         return -ENOMEM;
2272                 }
2273         }
2274
2275         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2276
2277         dcmd->cmd = MFI_CMD_DCMD;
2278         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2279         dcmd->sge_count = 1;
2280         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2281         dcmd->timeout = 0;
2282         dcmd->pad_0 = 0;
2283         dcmd->data_xfer_len =
2284                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2285         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2286
2287         if (initial)
2288                 dcmd->sgl.sge32[0].phys_addr =
2289                         cpu_to_le32(instance->vf_affiliation_111_h);
2290         else
2291                 dcmd->sgl.sge32[0].phys_addr =
2292                         cpu_to_le32(new_affiliation_111_h);
2293
2294         dcmd->sgl.sge32[0].length = cpu_to_le32(
2295                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2296
2297         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2298                "scsi%d\n", instance->host->host_no);
2299
2300         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2301                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2302                        " failed with status 0x%x for scsi%d\n",
2303                        dcmd->cmd_status, instance->host->host_no);
2304                 retval = 1; /* Do a scan if we couldn't get affiliation */
2305                 goto out;
2306         }
2307
2308         if (!initial) {
2309                 thisVf = new_affiliation_111->thisVf;
2310                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2311                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2312                             new_affiliation_111->map[ld].policy[thisVf]) {
2313                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2314                                        "Got new LD/VF affiliation for scsi%d\n",
2315                                        instance->host->host_no);
2316                                 memcpy(instance->vf_affiliation_111,
2317                                        new_affiliation_111,
2318                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2319                                 retval = 1;
2320                                 goto out;
2321                         }
2322         }
2323 out:
2324         if (new_affiliation_111) {
2325                 dma_free_coherent(&instance->pdev->dev,
2326                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2327                                     new_affiliation_111,
2328                                     new_affiliation_111_h);
2329         }
2330
2331         megasas_return_cmd(instance, cmd);
2332
2333         return retval;
2334 }
2335
2336 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2337                                             int initial)
2338 {
2339         struct megasas_cmd *cmd;
2340         struct megasas_dcmd_frame *dcmd;
2341         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2342         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2343         dma_addr_t new_affiliation_h;
2344         int i, j, retval = 0, found = 0, doscan = 0;
2345         u8 thisVf;
2346
2347         cmd = megasas_get_cmd(instance);
2348
2349         if (!cmd) {
2350                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2351                        "Failed to get cmd for scsi%d\n",
2352                        instance->host->host_no);
2353                 return -ENOMEM;
2354         }
2355
2356         dcmd = &cmd->frame->dcmd;
2357
2358         if (!instance->vf_affiliation) {
2359                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2360                        "affiliation for scsi%d\n", instance->host->host_no);
2361                 megasas_return_cmd(instance, cmd);
2362                 return -ENOMEM;
2363         }
2364
2365         if (initial)
2366                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2367                        sizeof(struct MR_LD_VF_AFFILIATION));
2368         else {
2369                 new_affiliation =
2370                         dma_alloc_coherent(&instance->pdev->dev,
2371                                            (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2372                                            &new_affiliation_h, GFP_KERNEL);
2373                 if (!new_affiliation) {
2374                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2375                                "memory for new affiliation for scsi%d\n",
2376                                instance->host->host_no);
2377                         megasas_return_cmd(instance, cmd);
2378                         return -ENOMEM;
2379                 }
2380         }
2381
2382         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2383
2384         dcmd->cmd = MFI_CMD_DCMD;
2385         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2386         dcmd->sge_count = 1;
2387         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2388         dcmd->timeout = 0;
2389         dcmd->pad_0 = 0;
2390         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2391                 sizeof(struct MR_LD_VF_AFFILIATION));
2392         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2393
2394         if (initial)
2395                 dcmd->sgl.sge32[0].phys_addr =
2396                         cpu_to_le32(instance->vf_affiliation_h);
2397         else
2398                 dcmd->sgl.sge32[0].phys_addr =
2399                         cpu_to_le32(new_affiliation_h);
2400
2401         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2402                 sizeof(struct MR_LD_VF_AFFILIATION));
2403
2404         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2405                "scsi%d\n", instance->host->host_no);
2406
2407
2408         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2409                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2410                        " failed with status 0x%x for scsi%d\n",
2411                        dcmd->cmd_status, instance->host->host_no);
2412                 retval = 1; /* Do a scan if we couldn't get affiliation */
2413                 goto out;
2414         }
2415
2416         if (!initial) {
2417                 if (!new_affiliation->ldCount) {
2418                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2419                                "affiliation for passive path for scsi%d\n",
2420                                instance->host->host_no);
2421                         retval = 1;
2422                         goto out;
2423                 }
2424                 newmap = new_affiliation->map;
2425                 savedmap = instance->vf_affiliation->map;
2426                 thisVf = new_affiliation->thisVf;
2427                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2428                         found = 0;
2429                         for (j = 0; j < instance->vf_affiliation->ldCount;
2430                              j++) {
2431                                 if (newmap->ref.targetId ==
2432                                     savedmap->ref.targetId) {
2433                                         found = 1;
2434                                         if (newmap->policy[thisVf] !=
2435                                             savedmap->policy[thisVf]) {
2436                                                 doscan = 1;
2437                                                 goto out;
2438                                         }
2439                                 }
2440                                 savedmap = (struct MR_LD_VF_MAP *)
2441                                         ((unsigned char *)savedmap +
2442                                          savedmap->size);
2443                         }
2444                         if (!found && newmap->policy[thisVf] !=
2445                             MR_LD_ACCESS_HIDDEN) {
2446                                 doscan = 1;
2447                                 goto out;
2448                         }
2449                         newmap = (struct MR_LD_VF_MAP *)
2450                                 ((unsigned char *)newmap + newmap->size);
2451                 }
2452
2453                 newmap = new_affiliation->map;
2454                 savedmap = instance->vf_affiliation->map;
2455
2456                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2457                         found = 0;
2458                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2459                                 if (savedmap->ref.targetId ==
2460                                     newmap->ref.targetId) {
2461                                         found = 1;
2462                                         if (savedmap->policy[thisVf] !=
2463                                             newmap->policy[thisVf]) {
2464                                                 doscan = 1;
2465                                                 goto out;
2466                                         }
2467                                 }
2468                                 newmap = (struct MR_LD_VF_MAP *)
2469                                         ((unsigned char *)newmap +
2470                                          newmap->size);
2471                         }
2472                         if (!found && savedmap->policy[thisVf] !=
2473                             MR_LD_ACCESS_HIDDEN) {
2474                                 doscan = 1;
2475                                 goto out;
2476                         }
2477                         savedmap = (struct MR_LD_VF_MAP *)
2478                                 ((unsigned char *)savedmap +
2479                                  savedmap->size);
2480                 }
2481         }
2482 out:
2483         if (doscan) {
2484                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2485                        "affiliation for scsi%d\n", instance->host->host_no);
2486                 memcpy(instance->vf_affiliation, new_affiliation,
2487                        new_affiliation->size);
2488                 retval = 1;
2489         }
2490
2491         if (new_affiliation)
2492                 dma_free_coherent(&instance->pdev->dev,
2493                                     (MAX_LOGICAL_DRIVES + 1) *
2494                                     sizeof(struct MR_LD_VF_AFFILIATION),
2495                                     new_affiliation, new_affiliation_h);
2496         megasas_return_cmd(instance, cmd);
2497
2498         return retval;
2499 }
2500
2501 /* This function will get the current SR-IOV LD/VF affiliation */
2502 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2503         int initial)
2504 {
2505         int retval;
2506
2507         if (instance->PlasmaFW111)
2508                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2509         else
2510                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2511         return retval;
2512 }
2513
2514 /* This function will tell FW to start the SR-IOV heartbeat */
2515 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2516                                          int initial)
2517 {
2518         struct megasas_cmd *cmd;
2519         struct megasas_dcmd_frame *dcmd;
2520         int retval = 0;
2521
2522         cmd = megasas_get_cmd(instance);
2523
2524         if (!cmd) {
2525                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2526                        "Failed to get cmd for scsi%d\n",
2527                        instance->host->host_no);
2528                 return -ENOMEM;
2529         }
2530
2531         dcmd = &cmd->frame->dcmd;
2532
2533         if (initial) {
2534                 instance->hb_host_mem =
2535                         dma_alloc_coherent(&instance->pdev->dev,
2536                                            sizeof(struct MR_CTRL_HB_HOST_MEM),
2537                                            &instance->hb_host_mem_h,
2538                                            GFP_KERNEL);
2539                 if (!instance->hb_host_mem) {
2540                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2541                                " memory for heartbeat host memory for scsi%d\n",
2542                                instance->host->host_no);
2543                         retval = -ENOMEM;
2544                         goto out;
2545                 }
2546         }
2547
2548         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2549
2550         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2551         dcmd->cmd = MFI_CMD_DCMD;
2552         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2553         dcmd->sge_count = 1;
2554         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2555         dcmd->timeout = 0;
2556         dcmd->pad_0 = 0;
2557         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2558         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2559
2560         megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2561                                  sizeof(struct MR_CTRL_HB_HOST_MEM));
2562
2563         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2564                instance->host->host_no);
2565
2566         if ((instance->adapter_type != MFI_SERIES) &&
2567             !instance->mask_interrupts)
2568                 retval = megasas_issue_blocked_cmd(instance, cmd,
2569                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2570         else
2571                 retval = megasas_issue_polled(instance, cmd);
2572
2573         if (retval) {
2574                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2575                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2576                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2577                         "timed out" : "failed", instance->host->host_no);
2578                 retval = 1;
2579         }
2580
2581 out:
2582         megasas_return_cmd(instance, cmd);
2583
2584         return retval;
2585 }
2586
2587 /* Handler for SR-IOV heartbeat */
2588 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2589 {
2590         struct megasas_instance *instance =
2591                 from_timer(instance, t, sriov_heartbeat_timer);
2592
2593         if (instance->hb_host_mem->HB.fwCounter !=
2594             instance->hb_host_mem->HB.driverCounter) {
2595                 instance->hb_host_mem->HB.driverCounter =
2596                         instance->hb_host_mem->HB.fwCounter;
2597                 mod_timer(&instance->sriov_heartbeat_timer,
2598                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2599         } else {
2600                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2601                        "completed for scsi%d\n", instance->host->host_no);
2602                 schedule_work(&instance->work_init);
2603         }
2604 }
2605
2606 /**
2607  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2608  * @instance:                           Adapter soft state
2609  *
2610  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2611  * complete all its outstanding commands. Returns error if one or more IOs
2612  * are pending after this time period. It also marks the controller dead.
2613  */
2614 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2615 {
2616         int i, sl, outstanding;
2617         u32 reset_index;
2618         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2619         unsigned long flags;
2620         struct list_head clist_local;
2621         struct megasas_cmd *reset_cmd;
2622         u32 fw_state;
2623
2624         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2625                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2626                 __func__, __LINE__);
2627                 return FAILED;
2628         }
2629
2630         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2631
2632                 INIT_LIST_HEAD(&clist_local);
2633                 spin_lock_irqsave(&instance->hba_lock, flags);
2634                 list_splice_init(&instance->internal_reset_pending_q,
2635                                 &clist_local);
2636                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2637
2638                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2639                 for (i = 0; i < wait_time; i++) {
2640                         msleep(1000);
2641                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2642                                 break;
2643                 }
2644
2645                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2646                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2647                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2648                         return FAILED;
2649                 }
2650
2651                 reset_index = 0;
2652                 while (!list_empty(&clist_local)) {
2653                         reset_cmd = list_entry((&clist_local)->next,
2654                                                 struct megasas_cmd, list);
2655                         list_del_init(&reset_cmd->list);
2656                         if (reset_cmd->scmd) {
2657                                 reset_cmd->scmd->result = DID_REQUEUE << 16;
2658                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2659                                         reset_index, reset_cmd,
2660                                         reset_cmd->scmd->cmnd[0]);
2661
2662                                 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2663                                 megasas_return_cmd(instance, reset_cmd);
2664                         } else if (reset_cmd->sync_cmd) {
2665                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2666                                                 "reset queue\n",
2667                                                 reset_cmd);
2668
2669                                 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2670                                 instance->instancet->fire_cmd(instance,
2671                                                 reset_cmd->frame_phys_addr,
2672                                                 0, instance->reg_set);
2673                         } else {
2674                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2675                                         "cmds lst\n",
2676                                         reset_cmd);
2677                         }
2678                         reset_index++;
2679                 }
2680
2681                 return SUCCESS;
2682         }
2683
2684         for (i = 0; i < resetwaittime; i++) {
2685                 outstanding = atomic_read(&instance->fw_outstanding);
2686
2687                 if (!outstanding)
2688                         break;
2689
2690                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2691                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2692                                "commands to complete\n",i,outstanding);
2693                         /*
2694                          * Call cmd completion routine. Cmd to be
2695                          * be completed directly without depending on isr.
2696                          */
2697                         megasas_complete_cmd_dpc((unsigned long)instance);
2698                 }
2699
2700                 msleep(1000);
2701         }
2702
2703         i = 0;
2704         outstanding = atomic_read(&instance->fw_outstanding);
2705         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2706
2707         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2708                 goto no_outstanding;
2709
2710         if (instance->disableOnlineCtrlReset)
2711                 goto kill_hba_and_failed;
2712         do {
2713                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2714                         dev_info(&instance->pdev->dev,
2715                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2716                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2717                         if (i == 3)
2718                                 goto kill_hba_and_failed;
2719                         megasas_do_ocr(instance);
2720
2721                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2722                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2723                                 __func__, __LINE__);
2724                                 return FAILED;
2725                         }
2726                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2727                                 __func__, __LINE__);
2728
2729                         for (sl = 0; sl < 10; sl++)
2730                                 msleep(500);
2731
2732                         outstanding = atomic_read(&instance->fw_outstanding);
2733
2734                         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2735                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2736                                 goto no_outstanding;
2737                 }
2738                 i++;
2739         } while (i <= 3);
2740
2741 no_outstanding:
2742
2743         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2744                 __func__, __LINE__);
2745         return SUCCESS;
2746
2747 kill_hba_and_failed:
2748
2749         /* Reset not supported, kill adapter */
2750         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2751                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2752                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2753                 atomic_read(&instance->fw_outstanding));
2754         megasas_dump_pending_frames(instance);
2755         megaraid_sas_kill_hba(instance);
2756
2757         return FAILED;
2758 }
2759
2760 /**
2761  * megasas_generic_reset -      Generic reset routine
2762  * @scmd:                       Mid-layer SCSI command
2763  *
2764  * This routine implements a generic reset handler for device, bus and host
2765  * reset requests. Device, bus and host specific reset handlers can use this
2766  * function after they do their specific tasks.
2767  */
2768 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2769 {
2770         int ret_val;
2771         struct megasas_instance *instance;
2772
2773         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2774
2775         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2776                  scmd->cmnd[0], scmd->retries);
2777
2778         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2779                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2780                 return FAILED;
2781         }
2782
2783         ret_val = megasas_wait_for_outstanding(instance);
2784         if (ret_val == SUCCESS)
2785                 dev_notice(&instance->pdev->dev, "reset successful\n");
2786         else
2787                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2788
2789         return ret_val;
2790 }
2791
2792 /**
2793  * megasas_reset_timer - quiesce the adapter if required
2794  * @scmd:               scsi cmnd
2795  *
2796  * Sets the FW busy flag and reduces the host->can_queue if the
2797  * cmd has not been completed within the timeout period.
2798  */
2799 static enum
2800 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2801 {
2802         struct megasas_instance *instance;
2803         unsigned long flags;
2804
2805         if (time_after(jiffies, scmd->jiffies_at_alloc +
2806                                 (scmd_timeout * 2) * HZ)) {
2807                 return BLK_EH_DONE;
2808         }
2809
2810         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2811         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2812                 /* FW is busy, throttle IO */
2813                 spin_lock_irqsave(instance->host->host_lock, flags);
2814
2815                 instance->host->can_queue = instance->throttlequeuedepth;
2816                 instance->last_time = jiffies;
2817                 instance->flag |= MEGASAS_FW_BUSY;
2818
2819                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2820         }
2821         return BLK_EH_RESET_TIMER;
2822 }
2823
2824 /**
2825  * megasas_dump_frame - This function will dump MPT/MFI frame
2826  */
2827 static inline void
2828 megasas_dump_frame(void *mpi_request, int sz)
2829 {
2830         int i;
2831         __le32 *mfp = (__le32 *)mpi_request;
2832
2833         printk(KERN_INFO "IO request frame:\n\t");
2834         for (i = 0; i < sz / sizeof(__le32); i++) {
2835                 if (i && ((i % 8) == 0))
2836                         printk("\n\t");
2837                 printk("%08x ", le32_to_cpu(mfp[i]));
2838         }
2839         printk("\n");
2840 }
2841
2842 /**
2843  * megasas_reset_bus_host -     Bus & host reset handler entry point
2844  */
2845 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2846 {
2847         int ret;
2848         struct megasas_instance *instance;
2849
2850         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2851
2852         scmd_printk(KERN_INFO, scmd,
2853                 "Controller reset is requested due to IO timeout\n"
2854                 "SCSI command pointer: (%p)\t SCSI host state: %d\t"
2855                 " SCSI host busy: %d\t FW outstanding: %d\n",
2856                 scmd, scmd->device->host->shost_state,
2857                 scsi_host_busy(scmd->device->host),
2858                 atomic_read(&instance->fw_outstanding));
2859
2860         /*
2861          * First wait for all commands to complete
2862          */
2863         if (instance->adapter_type == MFI_SERIES) {
2864                 ret = megasas_generic_reset(scmd);
2865         } else {
2866                 struct megasas_cmd_fusion *cmd;
2867                 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2868                 if (cmd)
2869                         megasas_dump_frame(cmd->io_request,
2870                                 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
2871                 ret = megasas_reset_fusion(scmd->device->host,
2872                                 SCSIIO_TIMEOUT_OCR);
2873         }
2874
2875         return ret;
2876 }
2877
2878 /**
2879  * megasas_task_abort - Issues task abort request to firmware
2880  *                      (supported only for fusion adapters)
2881  * @scmd:               SCSI command pointer
2882  */
2883 static int megasas_task_abort(struct scsi_cmnd *scmd)
2884 {
2885         int ret;
2886         struct megasas_instance *instance;
2887
2888         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2889
2890         if (instance->adapter_type != MFI_SERIES)
2891                 ret = megasas_task_abort_fusion(scmd);
2892         else {
2893                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
2894                 ret = FAILED;
2895         }
2896
2897         return ret;
2898 }
2899
2900 /**
2901  * megasas_reset_target:  Issues target reset request to firmware
2902  *                        (supported only for fusion adapters)
2903  * @scmd:                 SCSI command pointer
2904  */
2905 static int megasas_reset_target(struct scsi_cmnd *scmd)
2906 {
2907         int ret;
2908         struct megasas_instance *instance;
2909
2910         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2911
2912         if (instance->adapter_type != MFI_SERIES)
2913                 ret = megasas_reset_target_fusion(scmd);
2914         else {
2915                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
2916                 ret = FAILED;
2917         }
2918
2919         return ret;
2920 }
2921
2922 /**
2923  * megasas_bios_param - Returns disk geometry for a disk
2924  * @sdev:               device handle
2925  * @bdev:               block device
2926  * @capacity:           drive capacity
2927  * @geom:               geometry parameters
2928  */
2929 static int
2930 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2931                  sector_t capacity, int geom[])
2932 {
2933         int heads;
2934         int sectors;
2935         sector_t cylinders;
2936         unsigned long tmp;
2937
2938         /* Default heads (64) & sectors (32) */
2939         heads = 64;
2940         sectors = 32;
2941
2942         tmp = heads * sectors;
2943         cylinders = capacity;
2944
2945         sector_div(cylinders, tmp);
2946
2947         /*
2948          * Handle extended translation size for logical drives > 1Gb
2949          */
2950
2951         if (capacity >= 0x200000) {
2952                 heads = 255;
2953                 sectors = 63;
2954                 tmp = heads*sectors;
2955                 cylinders = capacity;
2956                 sector_div(cylinders, tmp);
2957         }
2958
2959         geom[0] = heads;
2960         geom[1] = sectors;
2961         geom[2] = cylinders;
2962
2963         return 0;
2964 }
2965
2966 static void megasas_aen_polling(struct work_struct *work);
2967
2968 /**
2969  * megasas_service_aen -        Processes an event notification
2970  * @instance:                   Adapter soft state
2971  * @cmd:                        AEN command completed by the ISR
2972  *
2973  * For AEN, driver sends a command down to FW that is held by the FW till an
2974  * event occurs. When an event of interest occurs, FW completes the command
2975  * that it was previously holding.
2976  *
2977  * This routines sends SIGIO signal to processes that have registered with the
2978  * driver for AEN.
2979  */
2980 static void
2981 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2982 {
2983         unsigned long flags;
2984
2985         /*
2986          * Don't signal app if it is just an aborted previously registered aen
2987          */
2988         if ((!cmd->abort_aen) && (instance->unload == 0)) {
2989                 spin_lock_irqsave(&poll_aen_lock, flags);
2990                 megasas_poll_wait_aen = 1;
2991                 spin_unlock_irqrestore(&poll_aen_lock, flags);
2992                 wake_up(&megasas_poll_wait);
2993                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2994         }
2995         else
2996                 cmd->abort_aen = 0;
2997
2998         instance->aen_cmd = NULL;
2999
3000         megasas_return_cmd(instance, cmd);
3001
3002         if ((instance->unload == 0) &&
3003                 ((instance->issuepend_done == 1))) {
3004                 struct megasas_aen_event *ev;
3005
3006                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3007                 if (!ev) {
3008                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3009                 } else {
3010                         ev->instance = instance;
3011                         instance->ev = ev;
3012                         INIT_DELAYED_WORK(&ev->hotplug_work,
3013                                           megasas_aen_polling);
3014                         schedule_delayed_work(&ev->hotplug_work, 0);
3015                 }
3016         }
3017 }
3018
3019 static ssize_t
3020 megasas_fw_crash_buffer_store(struct device *cdev,
3021         struct device_attribute *attr, const char *buf, size_t count)
3022 {
3023         struct Scsi_Host *shost = class_to_shost(cdev);
3024         struct megasas_instance *instance =
3025                 (struct megasas_instance *) shost->hostdata;
3026         int val = 0;
3027         unsigned long flags;
3028
3029         if (kstrtoint(buf, 0, &val) != 0)
3030                 return -EINVAL;
3031
3032         spin_lock_irqsave(&instance->crashdump_lock, flags);
3033         instance->fw_crash_buffer_offset = val;
3034         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3035         return strlen(buf);
3036 }
3037
3038 static ssize_t
3039 megasas_fw_crash_buffer_show(struct device *cdev,
3040         struct device_attribute *attr, char *buf)
3041 {
3042         struct Scsi_Host *shost = class_to_shost(cdev);
3043         struct megasas_instance *instance =
3044                 (struct megasas_instance *) shost->hostdata;
3045         u32 size;
3046         unsigned long buff_addr;
3047         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3048         unsigned long src_addr;
3049         unsigned long flags;
3050         u32 buff_offset;
3051
3052         spin_lock_irqsave(&instance->crashdump_lock, flags);
3053         buff_offset = instance->fw_crash_buffer_offset;
3054         if (!instance->crash_dump_buf &&
3055                 !((instance->fw_crash_state == AVAILABLE) ||
3056                 (instance->fw_crash_state == COPYING))) {
3057                 dev_err(&instance->pdev->dev,
3058                         "Firmware crash dump is not available\n");
3059                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3060                 return -EINVAL;
3061         }
3062
3063         buff_addr = (unsigned long) buf;
3064
3065         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3066                 dev_err(&instance->pdev->dev,
3067                         "Firmware crash dump offset is out of range\n");
3068                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3069                 return 0;
3070         }
3071
3072         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3073         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3074
3075         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3076                 (buff_offset % dmachunk);
3077         memcpy(buf, (void *)src_addr, size);
3078         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3079
3080         return size;
3081 }
3082
3083 static ssize_t
3084 megasas_fw_crash_buffer_size_show(struct device *cdev,
3085         struct device_attribute *attr, char *buf)
3086 {
3087         struct Scsi_Host *shost = class_to_shost(cdev);
3088         struct megasas_instance *instance =
3089                 (struct megasas_instance *) shost->hostdata;
3090
3091         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3092                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3093 }
3094
3095 static ssize_t
3096 megasas_fw_crash_state_store(struct device *cdev,
3097         struct device_attribute *attr, const char *buf, size_t count)
3098 {
3099         struct Scsi_Host *shost = class_to_shost(cdev);
3100         struct megasas_instance *instance =
3101                 (struct megasas_instance *) shost->hostdata;
3102         int val = 0;
3103         unsigned long flags;
3104
3105         if (kstrtoint(buf, 0, &val) != 0)
3106                 return -EINVAL;
3107
3108         if ((val <= AVAILABLE || val > COPY_ERROR)) {
3109                 dev_err(&instance->pdev->dev, "application updates invalid "
3110                         "firmware crash state\n");
3111                 return -EINVAL;
3112         }
3113
3114         instance->fw_crash_state = val;
3115
3116         if ((val == COPIED) || (val == COPY_ERROR)) {
3117                 spin_lock_irqsave(&instance->crashdump_lock, flags);
3118                 megasas_free_host_crash_buffer(instance);
3119                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3120                 if (val == COPY_ERROR)
3121                         dev_info(&instance->pdev->dev, "application failed to "
3122                                 "copy Firmware crash dump\n");
3123                 else
3124                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3125                                 "copied successfully\n");
3126         }
3127         return strlen(buf);
3128 }
3129
3130 static ssize_t
3131 megasas_fw_crash_state_show(struct device *cdev,
3132         struct device_attribute *attr, char *buf)
3133 {
3134         struct Scsi_Host *shost = class_to_shost(cdev);
3135         struct megasas_instance *instance =
3136                 (struct megasas_instance *) shost->hostdata;
3137
3138         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3139 }
3140
3141 static ssize_t
3142 megasas_page_size_show(struct device *cdev,
3143         struct device_attribute *attr, char *buf)
3144 {
3145         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3146 }
3147
3148 static ssize_t
3149 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3150         char *buf)
3151 {
3152         struct Scsi_Host *shost = class_to_shost(cdev);
3153         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3154
3155         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3156 }
3157
3158 static ssize_t
3159 megasas_fw_cmds_outstanding_show(struct device *cdev,
3160                                  struct device_attribute *attr, char *buf)
3161 {
3162         struct Scsi_Host *shost = class_to_shost(cdev);
3163         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3164
3165         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3166 }
3167
3168 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
3169         megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
3170 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
3171         megasas_fw_crash_buffer_size_show, NULL);
3172 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
3173         megasas_fw_crash_state_show, megasas_fw_crash_state_store);
3174 static DEVICE_ATTR(page_size, S_IRUGO,
3175         megasas_page_size_show, NULL);
3176 static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
3177         megasas_ldio_outstanding_show, NULL);
3178 static DEVICE_ATTR(fw_cmds_outstanding, S_IRUGO,
3179         megasas_fw_cmds_outstanding_show, NULL);
3180
3181 struct device_attribute *megaraid_host_attrs[] = {
3182         &dev_attr_fw_crash_buffer_size,
3183         &dev_attr_fw_crash_buffer,
3184         &dev_attr_fw_crash_state,
3185         &dev_attr_page_size,
3186         &dev_attr_ldio_outstanding,
3187         &dev_attr_fw_cmds_outstanding,
3188         NULL,
3189 };
3190
3191 /*
3192  * Scsi host template for megaraid_sas driver
3193  */
3194 static struct scsi_host_template megasas_template = {
3195
3196         .module = THIS_MODULE,
3197         .name = "Avago SAS based MegaRAID driver",
3198         .proc_name = "megaraid_sas",
3199         .slave_configure = megasas_slave_configure,
3200         .slave_alloc = megasas_slave_alloc,
3201         .slave_destroy = megasas_slave_destroy,
3202         .queuecommand = megasas_queue_command,
3203         .eh_target_reset_handler = megasas_reset_target,
3204         .eh_abort_handler = megasas_task_abort,
3205         .eh_host_reset_handler = megasas_reset_bus_host,
3206         .eh_timed_out = megasas_reset_timer,
3207         .shost_attrs = megaraid_host_attrs,
3208         .bios_param = megasas_bios_param,
3209         .change_queue_depth = scsi_change_queue_depth,
3210         .no_write_same = 1,
3211 };
3212
3213 /**
3214  * megasas_complete_int_cmd -   Completes an internal command
3215  * @instance:                   Adapter soft state
3216  * @cmd:                        Command to be completed
3217  *
3218  * The megasas_issue_blocked_cmd() function waits for a command to complete
3219  * after it issues a command. This function wakes up that waiting routine by
3220  * calling wake_up() on the wait queue.
3221  */
3222 static void
3223 megasas_complete_int_cmd(struct megasas_instance *instance,
3224                          struct megasas_cmd *cmd)
3225 {
3226         cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3227         wake_up(&instance->int_cmd_wait_q);
3228 }
3229
3230 /**
3231  * megasas_complete_abort -     Completes aborting a command
3232  * @instance:                   Adapter soft state
3233  * @cmd:                        Cmd that was issued to abort another cmd
3234  *
3235  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3236  * after it issues an abort on a previously issued command. This function
3237  * wakes up all functions waiting on the same wait queue.
3238  */
3239 static void
3240 megasas_complete_abort(struct megasas_instance *instance,
3241                        struct megasas_cmd *cmd)
3242 {
3243         if (cmd->sync_cmd) {
3244                 cmd->sync_cmd = 0;
3245                 cmd->cmd_status_drv = 0;
3246                 wake_up(&instance->abort_cmd_wait_q);
3247         }
3248 }
3249
3250 /**
3251  * megasas_complete_cmd -       Completes a command
3252  * @instance:                   Adapter soft state
3253  * @cmd:                        Command to be completed
3254  * @alt_status:                 If non-zero, use this value as status to
3255  *                              SCSI mid-layer instead of the value returned
3256  *                              by the FW. This should be used if caller wants
3257  *                              an alternate status (as in the case of aborted
3258  *                              commands)
3259  */
3260 void
3261 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3262                      u8 alt_status)
3263 {
3264         int exception = 0;
3265         struct megasas_header *hdr = &cmd->frame->hdr;
3266         unsigned long flags;
3267         struct fusion_context *fusion = instance->ctrl_context;
3268         u32 opcode, status;
3269
3270         /* flag for the retry reset */
3271         cmd->retry_for_fw_reset = 0;
3272
3273         if (cmd->scmd)
3274                 cmd->scmd->SCp.ptr = NULL;
3275
3276         switch (hdr->cmd) {
3277         case MFI_CMD_INVALID:
3278                 /* Some older 1068 controller FW may keep a pended
3279                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3280                    when booting the kdump kernel.  Ignore this command to
3281                    prevent a kernel panic on shutdown of the kdump kernel. */
3282                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3283                        "completed\n");
3284                 dev_warn(&instance->pdev->dev, "If you have a controller "
3285                        "other than PERC5, please upgrade your firmware\n");
3286                 break;
3287         case MFI_CMD_PD_SCSI_IO:
3288         case MFI_CMD_LD_SCSI_IO:
3289
3290                 /*
3291                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3292                  * issued either through an IO path or an IOCTL path. If it
3293                  * was via IOCTL, we will send it to internal completion.
3294                  */
3295                 if (cmd->sync_cmd) {
3296                         cmd->sync_cmd = 0;
3297                         megasas_complete_int_cmd(instance, cmd);
3298                         break;
3299                 }
3300                 /* fall through */
3301
3302         case MFI_CMD_LD_READ:
3303         case MFI_CMD_LD_WRITE:
3304
3305                 if (alt_status) {
3306                         cmd->scmd->result = alt_status << 16;
3307                         exception = 1;
3308                 }
3309
3310                 if (exception) {
3311
3312                         atomic_dec(&instance->fw_outstanding);
3313
3314                         scsi_dma_unmap(cmd->scmd);
3315                         cmd->scmd->scsi_done(cmd->scmd);
3316                         megasas_return_cmd(instance, cmd);
3317
3318                         break;
3319                 }
3320
3321                 switch (hdr->cmd_status) {
3322
3323                 case MFI_STAT_OK:
3324                         cmd->scmd->result = DID_OK << 16;
3325                         break;
3326
3327                 case MFI_STAT_SCSI_IO_FAILED:
3328                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3329                         cmd->scmd->result =
3330                             (DID_ERROR << 16) | hdr->scsi_status;
3331                         break;
3332
3333                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3334
3335                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3336
3337                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3338                                 memset(cmd->scmd->sense_buffer, 0,
3339                                        SCSI_SENSE_BUFFERSIZE);
3340                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3341                                        hdr->sense_len);
3342
3343                                 cmd->scmd->result |= DRIVER_SENSE << 24;
3344                         }
3345
3346                         break;
3347
3348                 case MFI_STAT_LD_OFFLINE:
3349                 case MFI_STAT_DEVICE_NOT_FOUND:
3350                         cmd->scmd->result = DID_BAD_TARGET << 16;
3351                         break;
3352
3353                 default:
3354                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3355                                hdr->cmd_status);
3356                         cmd->scmd->result = DID_ERROR << 16;
3357                         break;
3358                 }
3359
3360                 atomic_dec(&instance->fw_outstanding);
3361
3362                 scsi_dma_unmap(cmd->scmd);
3363                 cmd->scmd->scsi_done(cmd->scmd);
3364                 megasas_return_cmd(instance, cmd);
3365
3366                 break;
3367
3368         case MFI_CMD_SMP:
3369         case MFI_CMD_STP:
3370         case MFI_CMD_NVME:
3371                 megasas_complete_int_cmd(instance, cmd);
3372                 break;
3373
3374         case MFI_CMD_DCMD:
3375                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3376                 /* Check for LD map update */
3377                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3378                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3379                         fusion->fast_path_io = 0;
3380                         spin_lock_irqsave(instance->host->host_lock, flags);
3381                         status = cmd->frame->hdr.cmd_status;
3382                         instance->map_update_cmd = NULL;
3383                         if (status != MFI_STAT_OK) {
3384                                 if (status != MFI_STAT_NOT_FOUND)
3385                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3386                                                cmd->frame->hdr.cmd_status);
3387                                 else {
3388                                         megasas_return_cmd(instance, cmd);
3389                                         spin_unlock_irqrestore(
3390                                                 instance->host->host_lock,
3391                                                 flags);
3392                                         break;
3393                                 }
3394                         }
3395
3396                         megasas_return_cmd(instance, cmd);
3397
3398                         /*
3399                          * Set fast path IO to ZERO.
3400                          * Validate Map will set proper value.
3401                          * Meanwhile all IOs will go as LD IO.
3402                          */
3403                         if (status == MFI_STAT_OK &&
3404                             (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3405                                 instance->map_id++;
3406                                 fusion->fast_path_io = 1;
3407                         } else {
3408                                 fusion->fast_path_io = 0;
3409                         }
3410
3411                         megasas_sync_map_info(instance);
3412                         spin_unlock_irqrestore(instance->host->host_lock,
3413                                                flags);
3414                         break;
3415                 }
3416                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3417                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3418                         spin_lock_irqsave(&poll_aen_lock, flags);
3419                         megasas_poll_wait_aen = 0;
3420                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3421                 }
3422
3423                 /* FW has an updated PD sequence */
3424                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3425                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3426
3427                         spin_lock_irqsave(instance->host->host_lock, flags);
3428                         status = cmd->frame->hdr.cmd_status;
3429                         instance->jbod_seq_cmd = NULL;
3430                         megasas_return_cmd(instance, cmd);
3431
3432                         if (status == MFI_STAT_OK) {
3433                                 instance->pd_seq_map_id++;
3434                                 /* Re-register a pd sync seq num cmd */
3435                                 if (megasas_sync_pd_seq_num(instance, true))
3436                                         instance->use_seqnum_jbod_fp = false;
3437                         } else
3438                                 instance->use_seqnum_jbod_fp = false;
3439
3440                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3441                         break;
3442                 }
3443
3444                 /*
3445                  * See if got an event notification
3446                  */
3447                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3448                         megasas_service_aen(instance, cmd);
3449                 else
3450                         megasas_complete_int_cmd(instance, cmd);
3451
3452                 break;
3453
3454         case MFI_CMD_ABORT:
3455                 /*
3456                  * Cmd issued to abort another cmd returned
3457                  */
3458                 megasas_complete_abort(instance, cmd);
3459                 break;
3460
3461         default:
3462                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3463                        hdr->cmd);
3464                 megasas_complete_int_cmd(instance, cmd);
3465                 break;
3466         }
3467 }
3468
3469 /**
3470  * megasas_issue_pending_cmds_again -   issue all pending cmds
3471  *                                      in FW again because of the fw reset
3472  * @instance:                           Adapter soft state
3473  */
3474 static inline void
3475 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3476 {
3477         struct megasas_cmd *cmd;
3478         struct list_head clist_local;
3479         union megasas_evt_class_locale class_locale;
3480         unsigned long flags;
3481         u32 seq_num;
3482
3483         INIT_LIST_HEAD(&clist_local);
3484         spin_lock_irqsave(&instance->hba_lock, flags);
3485         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3486         spin_unlock_irqrestore(&instance->hba_lock, flags);
3487
3488         while (!list_empty(&clist_local)) {
3489                 cmd = list_entry((&clist_local)->next,
3490                                         struct megasas_cmd, list);
3491                 list_del_init(&cmd->list);
3492
3493                 if (cmd->sync_cmd || cmd->scmd) {
3494                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3495                                 "detected to be pending while HBA reset\n",
3496                                         cmd, cmd->scmd, cmd->sync_cmd);
3497
3498                         cmd->retry_for_fw_reset++;
3499
3500                         if (cmd->retry_for_fw_reset == 3) {
3501                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3502                                         "was tried multiple times during reset."
3503                                         "Shutting down the HBA\n",
3504                                         cmd, cmd->scmd, cmd->sync_cmd);
3505                                 instance->instancet->disable_intr(instance);
3506                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3507                                 megaraid_sas_kill_hba(instance);
3508                                 return;
3509                         }
3510                 }
3511
3512                 if (cmd->sync_cmd == 1) {
3513                         if (cmd->scmd) {
3514                                 dev_notice(&instance->pdev->dev, "unexpected"
3515                                         "cmd attached to internal command!\n");
3516                         }
3517                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3518                                                 "on the internal reset queue,"
3519                                                 "issue it again.\n", cmd);
3520                         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3521                         instance->instancet->fire_cmd(instance,
3522                                                         cmd->frame_phys_addr,
3523                                                         0, instance->reg_set);
3524                 } else if (cmd->scmd) {
3525                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3526                         "detected on the internal queue, issue again.\n",
3527                         cmd, cmd->scmd->cmnd[0]);
3528
3529                         atomic_inc(&instance->fw_outstanding);
3530                         instance->instancet->fire_cmd(instance,
3531                                         cmd->frame_phys_addr,
3532                                         cmd->frame_count-1, instance->reg_set);
3533                 } else {
3534                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3535                                 "internal reset defer list while re-issue!!\n",
3536                                 cmd);
3537                 }
3538         }
3539
3540         if (instance->aen_cmd) {
3541                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3542                 megasas_return_cmd(instance, instance->aen_cmd);
3543
3544                 instance->aen_cmd = NULL;
3545         }
3546
3547         /*
3548          * Initiate AEN (Asynchronous Event Notification)
3549          */
3550         seq_num = instance->last_seq_num;
3551         class_locale.members.reserved = 0;
3552         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3553         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3554
3555         megasas_register_aen(instance, seq_num, class_locale.word);
3556 }
3557
3558 /**
3559  * Move the internal reset pending commands to a deferred queue.
3560  *
3561  * We move the commands pending at internal reset time to a
3562  * pending queue. This queue would be flushed after successful
3563  * completion of the internal reset sequence. if the internal reset
3564  * did not complete in time, the kernel reset handler would flush
3565  * these commands.
3566  **/
3567 static void
3568 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3569 {
3570         struct megasas_cmd *cmd;
3571         int i;
3572         u16 max_cmd = instance->max_fw_cmds;
3573         u32 defer_index;
3574         unsigned long flags;
3575
3576         defer_index = 0;
3577         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3578         for (i = 0; i < max_cmd; i++) {
3579                 cmd = instance->cmd_list[i];
3580                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3581                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3582                                         "on the defer queue as internal\n",
3583                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3584
3585                         if (!list_empty(&cmd->list)) {
3586                                 dev_notice(&instance->pdev->dev, "ERROR while"
3587                                         " moving this cmd:%p, %d %p, it was"
3588                                         "discovered on some list?\n",
3589                                         cmd, cmd->sync_cmd, cmd->scmd);
3590
3591                                 list_del_init(&cmd->list);
3592                         }
3593                         defer_index++;
3594                         list_add_tail(&cmd->list,
3595                                 &instance->internal_reset_pending_q);
3596                 }
3597         }
3598         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3599 }
3600
3601
3602 static void
3603 process_fw_state_change_wq(struct work_struct *work)
3604 {
3605         struct megasas_instance *instance =
3606                 container_of(work, struct megasas_instance, work_init);
3607         u32 wait;
3608         unsigned long flags;
3609
3610     if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3611                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3612                                 atomic_read(&instance->adprecovery));
3613                 return ;
3614         }
3615
3616         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3617                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3618                                         "state, restarting it...\n");
3619
3620                 instance->instancet->disable_intr(instance);
3621                 atomic_set(&instance->fw_outstanding, 0);
3622
3623                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3624                 instance->instancet->adp_reset(instance, instance->reg_set);
3625                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3626
3627                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3628                                         "initiating next stage...\n");
3629
3630                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3631                                         "state 2 starting...\n");
3632
3633                 /* waiting for about 20 second before start the second init */
3634                 for (wait = 0; wait < 30; wait++) {
3635                         msleep(1000);
3636                 }
3637
3638                 if (megasas_transition_to_ready(instance, 1)) {
3639                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3640
3641                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3642                         megaraid_sas_kill_hba(instance);
3643                         return ;
3644                 }
3645
3646                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3647                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3648                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3649                         ) {
3650                         *instance->consumer = *instance->producer;
3651                 } else {
3652                         *instance->consumer = 0;
3653                         *instance->producer = 0;
3654                 }
3655
3656                 megasas_issue_init_mfi(instance);
3657
3658                 spin_lock_irqsave(&instance->hba_lock, flags);
3659                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3660                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3661                 instance->instancet->enable_intr(instance);
3662
3663                 megasas_issue_pending_cmds_again(instance);
3664                 instance->issuepend_done = 1;
3665         }
3666 }
3667
3668 /**
3669  * megasas_deplete_reply_queue -        Processes all completed commands
3670  * @instance:                           Adapter soft state
3671  * @alt_status:                         Alternate status to be returned to
3672  *                                      SCSI mid-layer instead of the status
3673  *                                      returned by the FW
3674  * Note: this must be called with hba lock held
3675  */
3676 static int
3677 megasas_deplete_reply_queue(struct megasas_instance *instance,
3678                                         u8 alt_status)
3679 {
3680         u32 mfiStatus;
3681         u32 fw_state;
3682
3683         if ((mfiStatus = instance->instancet->check_reset(instance,
3684                                         instance->reg_set)) == 1) {
3685                 return IRQ_HANDLED;
3686         }
3687
3688         mfiStatus = instance->instancet->clear_intr(instance);
3689         if (mfiStatus == 0) {
3690                 /* Hardware may not set outbound_intr_status in MSI-X mode */
3691                 if (!instance->msix_vectors)
3692                         return IRQ_NONE;
3693         }
3694
3695         instance->mfiStatus = mfiStatus;
3696
3697         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3698                 fw_state = instance->instancet->read_fw_status_reg(
3699                                 instance) & MFI_STATE_MASK;
3700
3701                 if (fw_state != MFI_STATE_FAULT) {
3702                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
3703                                                 fw_state);
3704                 }
3705
3706                 if ((fw_state == MFI_STATE_FAULT) &&
3707                                 (instance->disableOnlineCtrlReset == 0)) {
3708                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
3709
3710                         if ((instance->pdev->device ==
3711                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
3712                                 (instance->pdev->device ==
3713                                         PCI_DEVICE_ID_DELL_PERC5) ||
3714                                 (instance->pdev->device ==
3715                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3716
3717                                 *instance->consumer =
3718                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3719                         }
3720
3721
3722                         instance->instancet->disable_intr(instance);
3723                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3724                         instance->issuepend_done = 0;
3725
3726                         atomic_set(&instance->fw_outstanding, 0);
3727                         megasas_internal_reset_defer_cmds(instance);
3728
3729                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3730                                         fw_state, atomic_read(&instance->adprecovery));
3731
3732                         schedule_work(&instance->work_init);
3733                         return IRQ_HANDLED;
3734
3735                 } else {
3736                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3737                                 fw_state, instance->disableOnlineCtrlReset);
3738                 }
3739         }
3740
3741         tasklet_schedule(&instance->isr_tasklet);
3742         return IRQ_HANDLED;
3743 }
3744 /**
3745  * megasas_isr - isr entry point
3746  */
3747 static irqreturn_t megasas_isr(int irq, void *devp)
3748 {
3749         struct megasas_irq_context *irq_context = devp;
3750         struct megasas_instance *instance = irq_context->instance;
3751         unsigned long flags;
3752         irqreturn_t rc;
3753
3754         if (atomic_read(&instance->fw_reset_no_pci_access))
3755                 return IRQ_HANDLED;
3756
3757         spin_lock_irqsave(&instance->hba_lock, flags);
3758         rc = megasas_deplete_reply_queue(instance, DID_OK);
3759         spin_unlock_irqrestore(&instance->hba_lock, flags);
3760
3761         return rc;
3762 }
3763
3764 /**
3765  * megasas_transition_to_ready -        Move the FW to READY state
3766  * @instance:                           Adapter soft state
3767  *
3768  * During the initialization, FW passes can potentially be in any one of
3769  * several possible states. If the FW in operational, waiting-for-handshake
3770  * states, driver must take steps to bring it to ready state. Otherwise, it
3771  * has to wait for the ready state.
3772  */
3773 int
3774 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3775 {
3776         int i;
3777         u8 max_wait;
3778         u32 fw_state;
3779         u32 cur_state;
3780         u32 abs_state, curr_abs_state;
3781
3782         abs_state = instance->instancet->read_fw_status_reg(instance);
3783         fw_state = abs_state & MFI_STATE_MASK;
3784
3785         if (fw_state != MFI_STATE_READY)
3786                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3787                        " state\n");
3788
3789         while (fw_state != MFI_STATE_READY) {
3790
3791                 switch (fw_state) {
3792
3793                 case MFI_STATE_FAULT:
3794                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3795                         if (ocr) {
3796                                 max_wait = MEGASAS_RESET_WAIT_TIME;
3797                                 cur_state = MFI_STATE_FAULT;
3798                                 break;
3799                         } else
3800                                 return -ENODEV;
3801
3802                 case MFI_STATE_WAIT_HANDSHAKE:
3803                         /*
3804                          * Set the CLR bit in inbound doorbell
3805                          */
3806                         if ((instance->pdev->device ==
3807                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3808                                 (instance->pdev->device ==
3809                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3810                                 (instance->adapter_type != MFI_SERIES))
3811                                 writel(
3812                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3813                                   &instance->reg_set->doorbell);
3814                         else
3815                                 writel(
3816                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3817                                         &instance->reg_set->inbound_doorbell);
3818
3819                         max_wait = MEGASAS_RESET_WAIT_TIME;
3820                         cur_state = MFI_STATE_WAIT_HANDSHAKE;
3821                         break;
3822
3823                 case MFI_STATE_BOOT_MESSAGE_PENDING:
3824                         if ((instance->pdev->device ==
3825                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3826                                 (instance->pdev->device ==
3827                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3828                                 (instance->adapter_type != MFI_SERIES))
3829                                 writel(MFI_INIT_HOTPLUG,
3830                                        &instance->reg_set->doorbell);
3831                         else
3832                                 writel(MFI_INIT_HOTPLUG,
3833                                         &instance->reg_set->inbound_doorbell);
3834
3835                         max_wait = MEGASAS_RESET_WAIT_TIME;
3836                         cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3837                         break;
3838
3839                 case MFI_STATE_OPERATIONAL:
3840                         /*
3841                          * Bring it to READY state; assuming max wait 10 secs
3842                          */
3843                         instance->instancet->disable_intr(instance);
3844                         if ((instance->pdev->device ==
3845                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3846                                 (instance->pdev->device ==
3847                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
3848                                 (instance->adapter_type != MFI_SERIES)) {
3849                                 writel(MFI_RESET_FLAGS,
3850                                         &instance->reg_set->doorbell);
3851
3852                                 if (instance->adapter_type != MFI_SERIES) {
3853                                         for (i = 0; i < (10 * 1000); i += 20) {
3854                                                 if (megasas_readl(
3855                                                             instance,
3856                                                             &instance->
3857                                                             reg_set->
3858                                                             doorbell) & 1)
3859                                                         msleep(20);
3860                                                 else
3861                                                         break;
3862                                         }
3863                                 }
3864                         } else
3865                                 writel(MFI_RESET_FLAGS,
3866                                         &instance->reg_set->inbound_doorbell);
3867
3868                         max_wait = MEGASAS_RESET_WAIT_TIME;
3869                         cur_state = MFI_STATE_OPERATIONAL;
3870                         break;
3871
3872                 case MFI_STATE_UNDEFINED:
3873                         /*
3874                          * This state should not last for more than 2 seconds
3875                          */
3876                         max_wait = MEGASAS_RESET_WAIT_TIME;
3877                         cur_state = MFI_STATE_UNDEFINED;
3878                         break;
3879
3880                 case MFI_STATE_BB_INIT:
3881                         max_wait = MEGASAS_RESET_WAIT_TIME;
3882                         cur_state = MFI_STATE_BB_INIT;
3883                         break;
3884
3885                 case MFI_STATE_FW_INIT:
3886                         max_wait = MEGASAS_RESET_WAIT_TIME;
3887                         cur_state = MFI_STATE_FW_INIT;
3888                         break;
3889
3890                 case MFI_STATE_FW_INIT_2:
3891                         max_wait = MEGASAS_RESET_WAIT_TIME;
3892                         cur_state = MFI_STATE_FW_INIT_2;
3893                         break;
3894
3895                 case MFI_STATE_DEVICE_SCAN:
3896                         max_wait = MEGASAS_RESET_WAIT_TIME;
3897                         cur_state = MFI_STATE_DEVICE_SCAN;
3898                         break;
3899
3900                 case MFI_STATE_FLUSH_CACHE:
3901                         max_wait = MEGASAS_RESET_WAIT_TIME;
3902                         cur_state = MFI_STATE_FLUSH_CACHE;
3903                         break;
3904
3905                 default:
3906                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3907                                fw_state);
3908                         return -ENODEV;
3909                 }
3910
3911                 /*
3912                  * The cur_state should not last for more than max_wait secs
3913                  */
3914                 for (i = 0; i < max_wait * 50; i++) {
3915                         curr_abs_state = instance->instancet->
3916                                 read_fw_status_reg(instance);
3917
3918                         if (abs_state == curr_abs_state) {
3919                                 msleep(20);
3920                         } else
3921                                 break;
3922                 }
3923
3924                 /*
3925                  * Return error if fw_state hasn't changed after max_wait
3926                  */
3927                 if (curr_abs_state == abs_state) {
3928                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3929                                "in %d secs\n", fw_state, max_wait);
3930                         return -ENODEV;
3931                 }
3932
3933                 abs_state = curr_abs_state;
3934                 fw_state = curr_abs_state & MFI_STATE_MASK;
3935         }
3936         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3937
3938         return 0;
3939 }
3940
3941 /**
3942  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
3943  * @instance:                           Adapter soft state
3944  */
3945 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3946 {
3947         int i;
3948         u16 max_cmd = instance->max_mfi_cmds;
3949         struct megasas_cmd *cmd;
3950
3951         if (!instance->frame_dma_pool)
3952                 return;
3953
3954         /*
3955          * Return all frames to pool
3956          */
3957         for (i = 0; i < max_cmd; i++) {
3958
3959                 cmd = instance->cmd_list[i];
3960
3961                 if (cmd->frame)
3962                         dma_pool_free(instance->frame_dma_pool, cmd->frame,
3963                                       cmd->frame_phys_addr);
3964
3965                 if (cmd->sense)
3966                         dma_pool_free(instance->sense_dma_pool, cmd->sense,
3967                                       cmd->sense_phys_addr);
3968         }
3969
3970         /*
3971          * Now destroy the pool itself
3972          */
3973         dma_pool_destroy(instance->frame_dma_pool);
3974         dma_pool_destroy(instance->sense_dma_pool);
3975
3976         instance->frame_dma_pool = NULL;
3977         instance->sense_dma_pool = NULL;
3978 }
3979
3980 /**
3981  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
3982  * @instance:                   Adapter soft state
3983  *
3984  * Each command packet has an embedded DMA memory buffer that is used for
3985  * filling MFI frame and the SG list that immediately follows the frame. This
3986  * function creates those DMA memory buffers for each command packet by using
3987  * PCI pool facility.
3988  */
3989 static int megasas_create_frame_pool(struct megasas_instance *instance)
3990 {
3991         int i;
3992         u16 max_cmd;
3993         u32 sge_sz;
3994         u32 frame_count;
3995         struct megasas_cmd *cmd;
3996
3997         max_cmd = instance->max_mfi_cmds;
3998
3999         /*
4000          * Size of our frame is 64 bytes for MFI frame, followed by max SG
4001          * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
4002          */
4003         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
4004             sizeof(struct megasas_sge32);
4005
4006         if (instance->flag_ieee)
4007                 sge_sz = sizeof(struct megasas_sge_skinny);
4008
4009         /*
4010          * For MFI controllers.
4011          * max_num_sge = 60
4012          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
4013          * Total 960 byte (15 MFI frame of 64 byte)
4014          *
4015          * Fusion adapter require only 3 extra frame.
4016          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4017          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
4018          * Total 192 byte (3 MFI frame of 64 byte)
4019          */
4020         frame_count = (instance->adapter_type == MFI_SERIES) ?
4021                         (15 + 1) : (3 + 1);
4022         instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4023         /*
4024          * Use DMA pool facility provided by PCI layer
4025          */
4026         instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4027                                         &instance->pdev->dev,
4028                                         instance->mfi_frame_size, 256, 0);
4029
4030         if (!instance->frame_dma_pool) {
4031                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4032                 return -ENOMEM;
4033         }
4034
4035         instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4036                                                    &instance->pdev->dev, 128,
4037                                                    4, 0);
4038
4039         if (!instance->sense_dma_pool) {
4040                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4041
4042                 dma_pool_destroy(instance->frame_dma_pool);
4043                 instance->frame_dma_pool = NULL;
4044
4045                 return -ENOMEM;
4046         }
4047
4048         /*
4049          * Allocate and attach a frame to each of the commands in cmd_list.
4050          * By making cmd->index as the context instead of the &cmd, we can
4051          * always use 32bit context regardless of the architecture
4052          */
4053         for (i = 0; i < max_cmd; i++) {
4054
4055                 cmd = instance->cmd_list[i];
4056
4057                 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4058                                             GFP_KERNEL, &cmd->frame_phys_addr);
4059
4060                 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4061                                             GFP_KERNEL, &cmd->sense_phys_addr);
4062
4063                 /*
4064                  * megasas_teardown_frame_pool() takes care of freeing
4065                  * whatever has been allocated
4066                  */
4067                 if (!cmd->frame || !cmd->sense) {
4068                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4069                         megasas_teardown_frame_pool(instance);
4070                         return -ENOMEM;
4071                 }
4072
4073                 cmd->frame->io.context = cpu_to_le32(cmd->index);
4074                 cmd->frame->io.pad_0 = 0;
4075                 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4076                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4077         }
4078
4079         return 0;
4080 }
4081
4082 /**
4083  * megasas_free_cmds -  Free all the cmds in the free cmd pool
4084  * @instance:           Adapter soft state
4085  */
4086 void megasas_free_cmds(struct megasas_instance *instance)
4087 {
4088         int i;
4089
4090         /* First free the MFI frame pool */
4091         megasas_teardown_frame_pool(instance);
4092
4093         /* Free all the commands in the cmd_list */
4094         for (i = 0; i < instance->max_mfi_cmds; i++)
4095
4096                 kfree(instance->cmd_list[i]);
4097
4098         /* Free the cmd_list buffer itself */
4099         kfree(instance->cmd_list);
4100         instance->cmd_list = NULL;
4101
4102         INIT_LIST_HEAD(&instance->cmd_pool);
4103 }
4104
4105 /**
4106  * megasas_alloc_cmds - Allocates the command packets
4107  * @instance:           Adapter soft state
4108  *
4109  * Each command that is issued to the FW, whether IO commands from the OS or
4110  * internal commands like IOCTLs, are wrapped in local data structure called
4111  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4112  * the FW.
4113  *
4114  * Each frame has a 32-bit field called context (tag). This context is used
4115  * to get back the megasas_cmd from the frame when a frame gets completed in
4116  * the ISR. Typically the address of the megasas_cmd itself would be used as
4117  * the context. But we wanted to keep the differences between 32 and 64 bit
4118  * systems to the mininum. We always use 32 bit integers for the context. In
4119  * this driver, the 32 bit values are the indices into an array cmd_list.
4120  * This array is used only to look up the megasas_cmd given the context. The
4121  * free commands themselves are maintained in a linked list called cmd_pool.
4122  */
4123 int megasas_alloc_cmds(struct megasas_instance *instance)
4124 {
4125         int i;
4126         int j;
4127         u16 max_cmd;
4128         struct megasas_cmd *cmd;
4129
4130         max_cmd = instance->max_mfi_cmds;
4131
4132         /*
4133          * instance->cmd_list is an array of struct megasas_cmd pointers.
4134          * Allocate the dynamic array first and then allocate individual
4135          * commands.
4136          */
4137         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4138
4139         if (!instance->cmd_list) {
4140                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4141                 return -ENOMEM;
4142         }
4143
4144         memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4145
4146         for (i = 0; i < max_cmd; i++) {
4147                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4148                                                 GFP_KERNEL);
4149
4150                 if (!instance->cmd_list[i]) {
4151
4152                         for (j = 0; j < i; j++)
4153                                 kfree(instance->cmd_list[j]);
4154
4155                         kfree(instance->cmd_list);
4156                         instance->cmd_list = NULL;
4157
4158                         return -ENOMEM;
4159                 }
4160         }
4161
4162         for (i = 0; i < max_cmd; i++) {
4163                 cmd = instance->cmd_list[i];
4164                 memset(cmd, 0, sizeof(struct megasas_cmd));
4165                 cmd->index = i;
4166                 cmd->scmd = NULL;
4167                 cmd->instance = instance;
4168
4169                 list_add_tail(&cmd->list, &instance->cmd_pool);
4170         }
4171
4172         /*
4173          * Create a frame pool and assign one frame to each cmd
4174          */
4175         if (megasas_create_frame_pool(instance)) {
4176                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4177                 megasas_free_cmds(instance);
4178                 return -ENOMEM;
4179         }
4180
4181         return 0;
4182 }
4183
4184 /*
4185  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
4186  * @instance:                           Adapter soft state
4187  *
4188  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4189  * or FW is not under OCR.
4190  */
4191 inline int
4192 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4193
4194         if (instance->adapter_type == MFI_SERIES)
4195                 return KILL_ADAPTER;
4196         else if (instance->unload ||
4197                         test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
4198                 return IGNORE_TIMEOUT;
4199         else
4200                 return INITIATE_OCR;
4201 }
4202
4203 static void
4204 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4205 {
4206         int ret;
4207         struct megasas_cmd *cmd;
4208         struct megasas_dcmd_frame *dcmd;
4209
4210         struct MR_PRIV_DEVICE *mr_device_priv_data;
4211         u16 device_id = 0;
4212
4213         device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4214         cmd = megasas_get_cmd(instance);
4215
4216         if (!cmd) {
4217                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4218                 return;
4219         }
4220
4221         dcmd = &cmd->frame->dcmd;
4222
4223         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4224         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4225
4226         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4227         dcmd->cmd = MFI_CMD_DCMD;
4228         dcmd->cmd_status = 0xFF;
4229         dcmd->sge_count = 1;
4230         dcmd->flags = MFI_FRAME_DIR_READ;
4231         dcmd->timeout = 0;
4232         dcmd->pad_0 = 0;
4233         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4234         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4235
4236         megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4237                                  sizeof(struct MR_PD_INFO));
4238
4239         if ((instance->adapter_type != MFI_SERIES) &&
4240             !instance->mask_interrupts)
4241                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4242         else
4243                 ret = megasas_issue_polled(instance, cmd);
4244
4245         switch (ret) {
4246         case DCMD_SUCCESS:
4247                 mr_device_priv_data = sdev->hostdata;
4248                 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4249                 mr_device_priv_data->interface_type =
4250                                 instance->pd_info->state.ddf.pdType.intf;
4251                 break;
4252
4253         case DCMD_TIMEOUT:
4254
4255                 switch (dcmd_timeout_ocr_possible(instance)) {
4256                 case INITIATE_OCR:
4257                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4258                         megasas_reset_fusion(instance->host,
4259                                 MFI_IO_TIMEOUT_OCR);
4260                         break;
4261                 case KILL_ADAPTER:
4262                         megaraid_sas_kill_hba(instance);
4263                         break;
4264                 case IGNORE_TIMEOUT:
4265                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4266                                 __func__, __LINE__);
4267                         break;
4268                 }
4269
4270                 break;
4271         }
4272
4273         if (ret != DCMD_TIMEOUT)
4274                 megasas_return_cmd(instance, cmd);
4275
4276         return;
4277 }
4278 /*
4279  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4280  * @instance:                           Adapter soft state
4281  * @pd_list:                            pd_list structure
4282  *
4283  * Issues an internal command (DCMD) to get the FW's controller PD
4284  * list structure.  This information is mainly used to find out SYSTEM
4285  * supported by the FW.
4286  */
4287 static int
4288 megasas_get_pd_list(struct megasas_instance *instance)
4289 {
4290         int ret = 0, pd_index = 0;
4291         struct megasas_cmd *cmd;
4292         struct megasas_dcmd_frame *dcmd;
4293         struct MR_PD_LIST *ci;
4294         struct MR_PD_ADDRESS *pd_addr;
4295         dma_addr_t ci_h = 0;
4296
4297         if (instance->pd_list_not_supported) {
4298                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4299                 "not supported by firmware\n");
4300                 return ret;
4301         }
4302
4303         ci = instance->pd_list_buf;
4304         ci_h = instance->pd_list_buf_h;
4305
4306         cmd = megasas_get_cmd(instance);
4307
4308         if (!cmd) {
4309                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4310                 return -ENOMEM;
4311         }
4312
4313         dcmd = &cmd->frame->dcmd;
4314
4315         memset(ci, 0, sizeof(*ci));
4316         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4317
4318         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4319         dcmd->mbox.b[1] = 0;
4320         dcmd->cmd = MFI_CMD_DCMD;
4321         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4322         dcmd->sge_count = 1;
4323         dcmd->flags = MFI_FRAME_DIR_READ;
4324         dcmd->timeout = 0;
4325         dcmd->pad_0 = 0;
4326         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4327         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4328
4329         megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4330                                  (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4331
4332         if ((instance->adapter_type != MFI_SERIES) &&
4333             !instance->mask_interrupts)
4334                 ret = megasas_issue_blocked_cmd(instance, cmd,
4335                         MFI_IO_TIMEOUT_SECS);
4336         else
4337                 ret = megasas_issue_polled(instance, cmd);
4338
4339         switch (ret) {
4340         case DCMD_FAILED:
4341                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4342                         "failed/not supported by firmware\n");
4343
4344                 if (instance->adapter_type != MFI_SERIES)
4345                         megaraid_sas_kill_hba(instance);
4346                 else
4347                         instance->pd_list_not_supported = 1;
4348                 break;
4349         case DCMD_TIMEOUT:
4350
4351                 switch (dcmd_timeout_ocr_possible(instance)) {
4352                 case INITIATE_OCR:
4353                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4354                         /*
4355                          * DCMD failed from AEN path.
4356                          * AEN path already hold reset_mutex to avoid PCI access
4357                          * while OCR is in progress.
4358                          */
4359                         mutex_unlock(&instance->reset_mutex);
4360                         megasas_reset_fusion(instance->host,
4361                                                 MFI_IO_TIMEOUT_OCR);
4362                         mutex_lock(&instance->reset_mutex);
4363                         break;
4364                 case KILL_ADAPTER:
4365                         megaraid_sas_kill_hba(instance);
4366                         break;
4367                 case IGNORE_TIMEOUT:
4368                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4369                                 __func__, __LINE__);
4370                         break;
4371                 }
4372
4373                 break;
4374
4375         case DCMD_SUCCESS:
4376                 pd_addr = ci->addr;
4377
4378                 if ((le32_to_cpu(ci->count) >
4379                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4380                         break;
4381
4382                 memset(instance->local_pd_list, 0,
4383                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4384
4385                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4386                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4387                                         le16_to_cpu(pd_addr->deviceId);
4388                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4389                                         pd_addr->scsiDevType;
4390                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4391                                         MR_PD_STATE_SYSTEM;
4392                         pd_addr++;
4393                 }
4394
4395                 memcpy(instance->pd_list, instance->local_pd_list,
4396                         sizeof(instance->pd_list));
4397                 break;
4398
4399         }
4400
4401         if (ret != DCMD_TIMEOUT)
4402                 megasas_return_cmd(instance, cmd);
4403
4404         return ret;
4405 }
4406
4407 /*
4408  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4409  * @instance:                           Adapter soft state
4410  * @ld_list:                            ld_list structure
4411  *
4412  * Issues an internal command (DCMD) to get the FW's controller PD
4413  * list structure.  This information is mainly used to find out SYSTEM
4414  * supported by the FW.
4415  */
4416 static int
4417 megasas_get_ld_list(struct megasas_instance *instance)
4418 {
4419         int ret = 0, ld_index = 0, ids = 0;
4420         struct megasas_cmd *cmd;
4421         struct megasas_dcmd_frame *dcmd;
4422         struct MR_LD_LIST *ci;
4423         dma_addr_t ci_h = 0;
4424         u32 ld_count;
4425
4426         ci = instance->ld_list_buf;
4427         ci_h = instance->ld_list_buf_h;
4428
4429         cmd = megasas_get_cmd(instance);
4430
4431         if (!cmd) {
4432                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4433                 return -ENOMEM;
4434         }
4435
4436         dcmd = &cmd->frame->dcmd;
4437
4438         memset(ci, 0, sizeof(*ci));
4439         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4440
4441         if (instance->supportmax256vd)
4442                 dcmd->mbox.b[0] = 1;
4443         dcmd->cmd = MFI_CMD_DCMD;
4444         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4445         dcmd->sge_count = 1;
4446         dcmd->flags = MFI_FRAME_DIR_READ;
4447         dcmd->timeout = 0;
4448         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4449         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4450         dcmd->pad_0  = 0;
4451
4452         megasas_set_dma_settings(instance, dcmd, ci_h,
4453                                  sizeof(struct MR_LD_LIST));
4454
4455         if ((instance->adapter_type != MFI_SERIES) &&
4456             !instance->mask_interrupts)
4457                 ret = megasas_issue_blocked_cmd(instance, cmd,
4458                         MFI_IO_TIMEOUT_SECS);
4459         else
4460                 ret = megasas_issue_polled(instance, cmd);
4461
4462         ld_count = le32_to_cpu(ci->ldCount);
4463
4464         switch (ret) {
4465         case DCMD_FAILED:
4466                 megaraid_sas_kill_hba(instance);
4467                 break;
4468         case DCMD_TIMEOUT:
4469
4470                 switch (dcmd_timeout_ocr_possible(instance)) {
4471                 case INITIATE_OCR:
4472                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4473                         /*
4474                          * DCMD failed from AEN path.
4475                          * AEN path already hold reset_mutex to avoid PCI access
4476                          * while OCR is in progress.
4477                          */
4478                         mutex_unlock(&instance->reset_mutex);
4479                         megasas_reset_fusion(instance->host,
4480                                                 MFI_IO_TIMEOUT_OCR);
4481                         mutex_lock(&instance->reset_mutex);
4482                         break;
4483                 case KILL_ADAPTER:
4484                         megaraid_sas_kill_hba(instance);
4485                         break;
4486                 case IGNORE_TIMEOUT:
4487                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4488                                 __func__, __LINE__);
4489                         break;
4490                 }
4491
4492                 break;
4493
4494         case DCMD_SUCCESS:
4495                 if (ld_count > instance->fw_supported_vd_count)
4496                         break;
4497
4498                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4499
4500                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4501                         if (ci->ldList[ld_index].state != 0) {
4502                                 ids = ci->ldList[ld_index].ref.targetId;
4503                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4504                         }
4505                 }
4506
4507                 break;
4508         }
4509
4510         if (ret != DCMD_TIMEOUT)
4511                 megasas_return_cmd(instance, cmd);
4512
4513         return ret;
4514 }
4515
4516 /**
4517  * megasas_ld_list_query -      Returns FW's ld_list structure
4518  * @instance:                           Adapter soft state
4519  * @ld_list:                            ld_list structure
4520  *
4521  * Issues an internal command (DCMD) to get the FW's controller PD
4522  * list structure.  This information is mainly used to find out SYSTEM
4523  * supported by the FW.
4524  */
4525 static int
4526 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4527 {
4528         int ret = 0, ld_index = 0, ids = 0;
4529         struct megasas_cmd *cmd;
4530         struct megasas_dcmd_frame *dcmd;
4531         struct MR_LD_TARGETID_LIST *ci;
4532         dma_addr_t ci_h = 0;
4533         u32 tgtid_count;
4534
4535         ci = instance->ld_targetid_list_buf;
4536         ci_h = instance->ld_targetid_list_buf_h;
4537
4538         cmd = megasas_get_cmd(instance);
4539
4540         if (!cmd) {
4541                 dev_warn(&instance->pdev->dev,
4542                          "megasas_ld_list_query: Failed to get cmd\n");
4543                 return -ENOMEM;
4544         }
4545
4546         dcmd = &cmd->frame->dcmd;
4547
4548         memset(ci, 0, sizeof(*ci));
4549         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4550
4551         dcmd->mbox.b[0] = query_type;
4552         if (instance->supportmax256vd)
4553                 dcmd->mbox.b[2] = 1;
4554
4555         dcmd->cmd = MFI_CMD_DCMD;
4556         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4557         dcmd->sge_count = 1;
4558         dcmd->flags = MFI_FRAME_DIR_READ;
4559         dcmd->timeout = 0;
4560         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4561         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4562         dcmd->pad_0  = 0;
4563
4564         megasas_set_dma_settings(instance, dcmd, ci_h,
4565                                  sizeof(struct MR_LD_TARGETID_LIST));
4566
4567         if ((instance->adapter_type != MFI_SERIES) &&
4568             !instance->mask_interrupts)
4569                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4570         else
4571                 ret = megasas_issue_polled(instance, cmd);
4572
4573         switch (ret) {
4574         case DCMD_FAILED:
4575                 dev_info(&instance->pdev->dev,
4576                         "DCMD not supported by firmware - %s %d\n",
4577                                 __func__, __LINE__);
4578                 ret = megasas_get_ld_list(instance);
4579                 break;
4580         case DCMD_TIMEOUT:
4581                 switch (dcmd_timeout_ocr_possible(instance)) {
4582                 case INITIATE_OCR:
4583                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4584                         /*
4585                          * DCMD failed from AEN path.
4586                          * AEN path already hold reset_mutex to avoid PCI access
4587                          * while OCR is in progress.
4588                          */
4589                         mutex_unlock(&instance->reset_mutex);
4590                         megasas_reset_fusion(instance->host,
4591                                                 MFI_IO_TIMEOUT_OCR);
4592                         mutex_lock(&instance->reset_mutex);
4593                         break;
4594                 case KILL_ADAPTER:
4595                         megaraid_sas_kill_hba(instance);
4596                         break;
4597                 case IGNORE_TIMEOUT:
4598                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4599                                 __func__, __LINE__);
4600                         break;
4601                 }
4602
4603                 break;
4604         case DCMD_SUCCESS:
4605                 tgtid_count = le32_to_cpu(ci->count);
4606
4607                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4608                         break;
4609
4610                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4611                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4612                         ids = ci->targetId[ld_index];
4613                         instance->ld_ids[ids] = ci->targetId[ld_index];
4614                 }
4615
4616                 break;
4617         }
4618
4619         if (ret != DCMD_TIMEOUT)
4620                 megasas_return_cmd(instance, cmd);
4621
4622         return ret;
4623 }
4624
4625 /**
4626  * dcmd.opcode            - MR_DCMD_CTRL_DEVICE_LIST_GET
4627  * dcmd.mbox              - reserved
4628  * dcmd.sge IN            - ptr to return MR_HOST_DEVICE_LIST structure
4629  * Desc:    This DCMD will return the combined device list
4630  * Status:  MFI_STAT_OK - List returned successfully
4631  *          MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4632  *                                 disabled
4633  * @instance:                   Adapter soft state
4634  * @is_probe:                   Driver probe check
4635  * Return:                      0 if DCMD succeeded
4636  *                               non-zero if failed
4637  */
4638 static int
4639 megasas_host_device_list_query(struct megasas_instance *instance,
4640                                bool is_probe)
4641 {
4642         int ret, i, target_id;
4643         struct megasas_cmd *cmd;
4644         struct megasas_dcmd_frame *dcmd;
4645         struct MR_HOST_DEVICE_LIST *ci;
4646         u32 count;
4647         dma_addr_t ci_h;
4648
4649         ci = instance->host_device_list_buf;
4650         ci_h = instance->host_device_list_buf_h;
4651
4652         cmd = megasas_get_cmd(instance);
4653
4654         if (!cmd) {
4655                 dev_warn(&instance->pdev->dev,
4656                          "%s: failed to get cmd\n",
4657                          __func__);
4658                 return -ENOMEM;
4659         }
4660
4661         dcmd = &cmd->frame->dcmd;
4662
4663         memset(ci, 0, sizeof(*ci));
4664         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4665
4666         dcmd->mbox.b[0] = is_probe ? 0 : 1;
4667         dcmd->cmd = MFI_CMD_DCMD;
4668         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4669         dcmd->sge_count = 1;
4670         dcmd->flags = MFI_FRAME_DIR_READ;
4671         dcmd->timeout = 0;
4672         dcmd->pad_0 = 0;
4673         dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4674         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4675
4676         megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4677
4678         if (!instance->mask_interrupts) {
4679                 ret = megasas_issue_blocked_cmd(instance, cmd,
4680                                                 MFI_IO_TIMEOUT_SECS);
4681         } else {
4682                 ret = megasas_issue_polled(instance, cmd);
4683                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4684         }
4685
4686         switch (ret) {
4687         case DCMD_SUCCESS:
4688                 /* Fill the internal pd_list and ld_ids array based on
4689                  * targetIds returned by FW
4690                  */
4691                 count = le32_to_cpu(ci->count);
4692
4693                 memset(instance->local_pd_list, 0,
4694                        MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4695                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4696                 for (i = 0; i < count; i++) {
4697                         target_id = le16_to_cpu(ci->host_device_list[i].target_id);
4698                         if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
4699                                 instance->local_pd_list[target_id].tid = target_id;
4700                                 instance->local_pd_list[target_id].driveType =
4701                                                 ci->host_device_list[i].scsi_type;
4702                                 instance->local_pd_list[target_id].driveState =
4703                                                 MR_PD_STATE_SYSTEM;
4704                         } else {
4705                                 instance->ld_ids[target_id] = target_id;
4706                         }
4707                 }
4708
4709                 memcpy(instance->pd_list, instance->local_pd_list,
4710                        sizeof(instance->pd_list));
4711                 break;
4712
4713         case DCMD_TIMEOUT:
4714                 switch (dcmd_timeout_ocr_possible(instance)) {
4715                 case INITIATE_OCR:
4716                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4717                         megasas_reset_fusion(instance->host,
4718                                 MFI_IO_TIMEOUT_OCR);
4719                         break;
4720                 case KILL_ADAPTER:
4721                         megaraid_sas_kill_hba(instance);
4722                         break;
4723                 case IGNORE_TIMEOUT:
4724                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4725                                  __func__, __LINE__);
4726                         break;
4727                 }
4728                 break;
4729         case DCMD_FAILED:
4730                 dev_err(&instance->pdev->dev,
4731                         "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
4732                         __func__);
4733                 break;
4734         }
4735
4736         if (ret != DCMD_TIMEOUT)
4737                 megasas_return_cmd(instance, cmd);
4738
4739         return ret;
4740 }
4741
4742 /*
4743  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4744  * instance                      : Controller's instance
4745 */
4746 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4747 {
4748         struct fusion_context *fusion;
4749         u32 ventura_map_sz = 0;
4750
4751         fusion = instance->ctrl_context;
4752         /* For MFI based controllers return dummy success */
4753         if (!fusion)
4754                 return;
4755
4756         instance->supportmax256vd =
4757                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
4758         /* Below is additional check to address future FW enhancement */
4759         if (instance->ctrl_info_buf->max_lds > 64)
4760                 instance->supportmax256vd = 1;
4761
4762         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4763                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4764         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4765                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4766         if (instance->supportmax256vd) {
4767                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4768                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4769         } else {
4770                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4771                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4772         }
4773
4774         dev_info(&instance->pdev->dev,
4775                 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
4776                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
4777                 instance->ctrl_info_buf->max_lds);
4778
4779         if (instance->max_raid_mapsize) {
4780                 ventura_map_sz = instance->max_raid_mapsize *
4781                                                 MR_MIN_MAP_SIZE; /* 64k */
4782                 fusion->current_map_sz = ventura_map_sz;
4783                 fusion->max_map_sz = ventura_map_sz;
4784         } else {
4785                 fusion->old_map_sz =  sizeof(struct MR_FW_RAID_MAP) +
4786                                         (sizeof(struct MR_LD_SPAN_MAP) *
4787                                         (instance->fw_supported_vd_count - 1));
4788                 fusion->new_map_sz =  sizeof(struct MR_FW_RAID_MAP_EXT);
4789
4790                 fusion->max_map_sz =
4791                         max(fusion->old_map_sz, fusion->new_map_sz);
4792
4793                 if (instance->supportmax256vd)
4794                         fusion->current_map_sz = fusion->new_map_sz;
4795                 else
4796                         fusion->current_map_sz = fusion->old_map_sz;
4797         }
4798         /* irrespective of FW raid maps, driver raid map is constant */
4799         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
4800 }
4801
4802 /*
4803  * dcmd.opcode                - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
4804  * dcmd.hdr.length            - number of bytes to read
4805  * dcmd.sge                   - Ptr to MR_SNAPDUMP_PROPERTIES
4806  * Desc:                         Fill in snapdump properties
4807  * Status:                       MFI_STAT_OK- Command successful
4808  */
4809 void megasas_get_snapdump_properties(struct megasas_instance *instance)
4810 {
4811         int ret = 0;
4812         struct megasas_cmd *cmd;
4813         struct megasas_dcmd_frame *dcmd;
4814         struct MR_SNAPDUMP_PROPERTIES *ci;
4815         dma_addr_t ci_h = 0;
4816
4817         ci = instance->snapdump_prop;
4818         ci_h = instance->snapdump_prop_h;
4819
4820         if (!ci)
4821                 return;
4822
4823         cmd = megasas_get_cmd(instance);
4824
4825         if (!cmd) {
4826                 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
4827                 return;
4828         }
4829
4830         dcmd = &cmd->frame->dcmd;
4831
4832         memset(ci, 0, sizeof(*ci));
4833         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4834
4835         dcmd->cmd = MFI_CMD_DCMD;
4836         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4837         dcmd->sge_count = 1;
4838         dcmd->flags = MFI_FRAME_DIR_READ;
4839         dcmd->timeout = 0;
4840         dcmd->pad_0 = 0;
4841         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
4842         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
4843
4844         megasas_set_dma_settings(instance, dcmd, ci_h,
4845                                  sizeof(struct MR_SNAPDUMP_PROPERTIES));
4846
4847         if (!instance->mask_interrupts) {
4848                 ret = megasas_issue_blocked_cmd(instance, cmd,
4849                                                 MFI_IO_TIMEOUT_SECS);
4850         } else {
4851                 ret = megasas_issue_polled(instance, cmd);
4852                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4853         }
4854
4855         switch (ret) {
4856         case DCMD_SUCCESS:
4857                 instance->snapdump_wait_time =
4858                         min_t(u8, ci->trigger_min_num_sec_before_ocr,
4859                                 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
4860                 break;
4861
4862         case DCMD_TIMEOUT:
4863                 switch (dcmd_timeout_ocr_possible(instance)) {
4864                 case INITIATE_OCR:
4865                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4866                         megasas_reset_fusion(instance->host,
4867                                 MFI_IO_TIMEOUT_OCR);
4868                         break;
4869                 case KILL_ADAPTER:
4870                         megaraid_sas_kill_hba(instance);
4871                         break;
4872                 case IGNORE_TIMEOUT:
4873                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4874                                 __func__, __LINE__);
4875                         break;
4876                 }
4877         }
4878
4879         if (ret != DCMD_TIMEOUT)
4880                 megasas_return_cmd(instance, cmd);
4881 }
4882
4883 /**
4884  * megasas_get_controller_info -        Returns FW's controller structure
4885  * @instance:                           Adapter soft state
4886  *
4887  * Issues an internal command (DCMD) to get the FW's controller structure.
4888  * This information is mainly used to find out the maximum IO transfer per
4889  * command supported by the FW.
4890  */
4891 int
4892 megasas_get_ctrl_info(struct megasas_instance *instance)
4893 {
4894         int ret = 0;
4895         struct megasas_cmd *cmd;
4896         struct megasas_dcmd_frame *dcmd;
4897         struct megasas_ctrl_info *ci;
4898         dma_addr_t ci_h = 0;
4899
4900         ci = instance->ctrl_info_buf;
4901         ci_h = instance->ctrl_info_buf_h;
4902
4903         cmd = megasas_get_cmd(instance);
4904
4905         if (!cmd) {
4906                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4907                 return -ENOMEM;
4908         }
4909
4910         dcmd = &cmd->frame->dcmd;
4911
4912         memset(ci, 0, sizeof(*ci));
4913         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4914
4915         dcmd->cmd = MFI_CMD_DCMD;
4916         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4917         dcmd->sge_count = 1;
4918         dcmd->flags = MFI_FRAME_DIR_READ;
4919         dcmd->timeout = 0;
4920         dcmd->pad_0 = 0;
4921         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4922         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4923         dcmd->mbox.b[0] = 1;
4924
4925         megasas_set_dma_settings(instance, dcmd, ci_h,
4926                                  sizeof(struct megasas_ctrl_info));
4927
4928         if ((instance->adapter_type != MFI_SERIES) &&
4929             !instance->mask_interrupts) {
4930                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4931         } else {
4932                 ret = megasas_issue_polled(instance, cmd);
4933                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4934         }
4935
4936         switch (ret) {
4937         case DCMD_SUCCESS:
4938                 /* Save required controller information in
4939                  * CPU endianness format.
4940                  */
4941                 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
4942                 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
4943                 le32_to_cpus((u32 *)&ci->adapterOperations2);
4944                 le32_to_cpus((u32 *)&ci->adapterOperations3);
4945                 le16_to_cpus((u16 *)&ci->adapter_operations4);
4946
4947                 /* Update the latest Ext VD info.
4948                  * From Init path, store current firmware details.
4949                  * From OCR path, detect any firmware properties changes.
4950                  * in case of Firmware upgrade without system reboot.
4951                  */
4952                 megasas_update_ext_vd_details(instance);
4953                 instance->use_seqnum_jbod_fp =
4954                         ci->adapterOperations3.useSeqNumJbodFP;
4955                 instance->support_morethan256jbod =
4956                         ci->adapter_operations4.support_pd_map_target_id;
4957                 instance->support_nvme_passthru =
4958                         ci->adapter_operations4.support_nvme_passthru;
4959                 instance->task_abort_tmo = ci->TaskAbortTO;
4960                 instance->max_reset_tmo = ci->MaxResetTO;
4961
4962                 /*Check whether controller is iMR or MR */
4963                 instance->is_imr = (ci->memory_size ? 0 : 1);
4964
4965                 instance->snapdump_wait_time =
4966                         (ci->properties.on_off_properties2.enable_snap_dump ?
4967                          MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
4968
4969                 instance->enable_fw_dev_list =
4970                         ci->properties.on_off_properties2.enable_fw_dev_list;
4971
4972                 dev_info(&instance->pdev->dev,
4973                         "controller type\t: %s(%dMB)\n",
4974                         instance->is_imr ? "iMR" : "MR",
4975                         le16_to_cpu(ci->memory_size));
4976
4977                 instance->disableOnlineCtrlReset =
4978                         ci->properties.OnOffProperties.disableOnlineCtrlReset;
4979                 instance->secure_jbod_support =
4980                         ci->adapterOperations3.supportSecurityonJBOD;
4981                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4982                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4983                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4984                         instance->secure_jbod_support ? "Yes" : "No");
4985                 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
4986                          instance->support_nvme_passthru ? "Yes" : "No");
4987                 dev_info(&instance->pdev->dev,
4988                          "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
4989                          instance->task_abort_tmo, instance->max_reset_tmo);
4990
4991                 break;
4992
4993         case DCMD_TIMEOUT:
4994                 switch (dcmd_timeout_ocr_possible(instance)) {
4995                 case INITIATE_OCR:
4996                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4997                         megasas_reset_fusion(instance->host,
4998                                 MFI_IO_TIMEOUT_OCR);
4999                         break;
5000                 case KILL_ADAPTER:
5001                         megaraid_sas_kill_hba(instance);
5002                         break;
5003                 case IGNORE_TIMEOUT:
5004                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5005                                 __func__, __LINE__);
5006                         break;
5007                 }
5008                 break;
5009         case DCMD_FAILED:
5010                 megaraid_sas_kill_hba(instance);
5011                 break;
5012
5013         }
5014
5015         if (ret != DCMD_TIMEOUT)
5016                 megasas_return_cmd(instance, cmd);
5017
5018         return ret;
5019 }
5020
5021 /*
5022  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
5023  *                                      to firmware
5024  *
5025  * @instance:                           Adapter soft state
5026  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
5027                                         MR_CRASH_BUF_TURN_OFF = 0
5028                                         MR_CRASH_BUF_TURN_ON = 1
5029  * @return 0 on success non-zero on failure.
5030  * Issues an internal command (DCMD) to set parameters for crash dump feature.
5031  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5032  * that driver supports crash dump feature. This DCMD will be sent only if
5033  * crash dump feature is supported by the FW.
5034  *
5035  */
5036 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5037         u8 crash_buf_state)
5038 {
5039         int ret = 0;
5040         struct megasas_cmd *cmd;
5041         struct megasas_dcmd_frame *dcmd;
5042
5043         cmd = megasas_get_cmd(instance);
5044
5045         if (!cmd) {
5046                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5047                 return -ENOMEM;
5048         }
5049
5050
5051         dcmd = &cmd->frame->dcmd;
5052
5053         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5054         dcmd->mbox.b[0] = crash_buf_state;
5055         dcmd->cmd = MFI_CMD_DCMD;
5056         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5057         dcmd->sge_count = 1;
5058         dcmd->flags = MFI_FRAME_DIR_NONE;
5059         dcmd->timeout = 0;
5060         dcmd->pad_0 = 0;
5061         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5062         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5063
5064         megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5065                                  CRASH_DMA_BUF_SIZE);
5066
5067         if ((instance->adapter_type != MFI_SERIES) &&
5068             !instance->mask_interrupts)
5069                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5070         else
5071                 ret = megasas_issue_polled(instance, cmd);
5072
5073         if (ret == DCMD_TIMEOUT) {
5074                 switch (dcmd_timeout_ocr_possible(instance)) {
5075                 case INITIATE_OCR:
5076                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5077                         megasas_reset_fusion(instance->host,
5078                                         MFI_IO_TIMEOUT_OCR);
5079                         break;
5080                 case KILL_ADAPTER:
5081                         megaraid_sas_kill_hba(instance);
5082                         break;
5083                 case IGNORE_TIMEOUT:
5084                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5085                                 __func__, __LINE__);
5086                         break;
5087                 }
5088         } else
5089                 megasas_return_cmd(instance, cmd);
5090
5091         return ret;
5092 }
5093
5094 /**
5095  * megasas_issue_init_mfi -     Initializes the FW
5096  * @instance:           Adapter soft state
5097  *
5098  * Issues the INIT MFI cmd
5099  */
5100 static int
5101 megasas_issue_init_mfi(struct megasas_instance *instance)
5102 {
5103         __le32 context;
5104         struct megasas_cmd *cmd;
5105         struct megasas_init_frame *init_frame;
5106         struct megasas_init_queue_info *initq_info;
5107         dma_addr_t init_frame_h;
5108         dma_addr_t initq_info_h;
5109
5110         /*
5111          * Prepare a init frame. Note the init frame points to queue info
5112          * structure. Each frame has SGL allocated after first 64 bytes. For
5113          * this frame - since we don't need any SGL - we use SGL's space as
5114          * queue info structure
5115          *
5116          * We will not get a NULL command below. We just created the pool.
5117          */
5118         cmd = megasas_get_cmd(instance);
5119
5120         init_frame = (struct megasas_init_frame *)cmd->frame;
5121         initq_info = (struct megasas_init_queue_info *)
5122                 ((unsigned long)init_frame + 64);
5123
5124         init_frame_h = cmd->frame_phys_addr;
5125         initq_info_h = init_frame_h + 64;
5126
5127         context = init_frame->context;
5128         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5129         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5130         init_frame->context = context;
5131
5132         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5133         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5134
5135         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5136         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5137
5138         init_frame->cmd = MFI_CMD_INIT;
5139         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5140         init_frame->queue_info_new_phys_addr_lo =
5141                 cpu_to_le32(lower_32_bits(initq_info_h));
5142         init_frame->queue_info_new_phys_addr_hi =
5143                 cpu_to_le32(upper_32_bits(initq_info_h));
5144
5145         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5146
5147         /*
5148          * disable the intr before firing the init frame to FW
5149          */
5150         instance->instancet->disable_intr(instance);
5151
5152         /*
5153          * Issue the init frame in polled mode
5154          */
5155
5156         if (megasas_issue_polled(instance, cmd)) {
5157                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5158                 megasas_return_cmd(instance, cmd);
5159                 goto fail_fw_init;
5160         }
5161
5162         megasas_return_cmd(instance, cmd);
5163
5164         return 0;
5165
5166 fail_fw_init:
5167         return -EINVAL;
5168 }
5169
5170 static u32
5171 megasas_init_adapter_mfi(struct megasas_instance *instance)
5172 {
5173         u32 context_sz;
5174         u32 reply_q_sz;
5175
5176         /*
5177          * Get various operational parameters from status register
5178          */
5179         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5180         /*
5181          * Reduce the max supported cmds by 1. This is to ensure that the
5182          * reply_q_sz (1 more than the max cmd that driver may send)
5183          * does not exceed max cmds that the FW can support
5184          */
5185         instance->max_fw_cmds = instance->max_fw_cmds-1;
5186         instance->max_mfi_cmds = instance->max_fw_cmds;
5187         instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5188                                         0x10;
5189         /*
5190          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5191          * are reserved for IOCTL + driver's internal DCMDs.
5192          */
5193         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5194                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5195                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5196                         MEGASAS_SKINNY_INT_CMDS);
5197                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5198         } else {
5199                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5200                         MEGASAS_INT_CMDS);
5201                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5202         }
5203
5204         instance->cur_can_queue = instance->max_scsi_cmds;
5205         /*
5206          * Create a pool of commands
5207          */
5208         if (megasas_alloc_cmds(instance))
5209                 goto fail_alloc_cmds;
5210
5211         /*
5212          * Allocate memory for reply queue. Length of reply queue should
5213          * be _one_ more than the maximum commands handled by the firmware.
5214          *
5215          * Note: When FW completes commands, it places corresponding contex
5216          * values in this circular reply queue. This circular queue is a fairly
5217          * typical producer-consumer queue. FW is the producer (of completed
5218          * commands) and the driver is the consumer.
5219          */
5220         context_sz = sizeof(u32);
5221         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5222
5223         instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5224                         reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5225
5226         if (!instance->reply_queue) {
5227                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5228                 goto fail_reply_queue;
5229         }
5230
5231         if (megasas_issue_init_mfi(instance))
5232                 goto fail_fw_init;
5233
5234         if (megasas_get_ctrl_info(instance)) {
5235                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5236                         "Fail from %s %d\n", instance->unique_id,
5237                         __func__, __LINE__);
5238                 goto fail_fw_init;
5239         }
5240
5241         instance->fw_support_ieee = 0;
5242         instance->fw_support_ieee =
5243                 (instance->instancet->read_fw_status_reg(instance) &
5244                 0x04000000);
5245
5246         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5247                         instance->fw_support_ieee);
5248
5249         if (instance->fw_support_ieee)
5250                 instance->flag_ieee = 1;
5251
5252         return 0;
5253
5254 fail_fw_init:
5255
5256         dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5257                             instance->reply_queue, instance->reply_queue_h);
5258 fail_reply_queue:
5259         megasas_free_cmds(instance);
5260
5261 fail_alloc_cmds:
5262         return 1;
5263 }
5264
5265 /*
5266  * megasas_setup_irqs_ioapic -          register legacy interrupts.
5267  * @instance:                           Adapter soft state
5268  *
5269  * Do not enable interrupt, only setup ISRs.
5270  *
5271  * Return 0 on success.
5272  */
5273 static int
5274 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5275 {
5276         struct pci_dev *pdev;
5277
5278         pdev = instance->pdev;
5279         instance->irq_context[0].instance = instance;
5280         instance->irq_context[0].MSIxIndex = 0;
5281         if (request_irq(pci_irq_vector(pdev, 0),
5282                         instance->instancet->service_isr, IRQF_SHARED,
5283                         "megasas", &instance->irq_context[0])) {
5284                 dev_err(&instance->pdev->dev,
5285                                 "Failed to register IRQ from %s %d\n",
5286                                 __func__, __LINE__);
5287                 return -1;
5288         }
5289         return 0;
5290 }
5291
5292 /**
5293  * megasas_setup_irqs_msix -            register MSI-x interrupts.
5294  * @instance:                           Adapter soft state
5295  * @is_probe:                           Driver probe check
5296  *
5297  * Do not enable interrupt, only setup ISRs.
5298  *
5299  * Return 0 on success.
5300  */
5301 static int
5302 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5303 {
5304         int i, j;
5305         struct pci_dev *pdev;
5306
5307         pdev = instance->pdev;
5308
5309         /* Try MSI-x */
5310         for (i = 0; i < instance->msix_vectors; i++) {
5311                 instance->irq_context[i].instance = instance;
5312                 instance->irq_context[i].MSIxIndex = i;
5313                 if (request_irq(pci_irq_vector(pdev, i),
5314                         instance->instancet->service_isr, 0, "megasas",
5315                         &instance->irq_context[i])) {
5316                         dev_err(&instance->pdev->dev,
5317                                 "Failed to register IRQ for vector %d.\n", i);
5318                         for (j = 0; j < i; j++)
5319                                 free_irq(pci_irq_vector(pdev, j),
5320                                          &instance->irq_context[j]);
5321                         /* Retry irq register for IO_APIC*/
5322                         instance->msix_vectors = 0;
5323                         if (is_probe) {
5324                                 pci_free_irq_vectors(instance->pdev);
5325                                 return megasas_setup_irqs_ioapic(instance);
5326                         } else {
5327                                 return -1;
5328                         }
5329                 }
5330         }
5331         return 0;
5332 }
5333
5334 /*
5335  * megasas_destroy_irqs-                unregister interrupts.
5336  * @instance:                           Adapter soft state
5337  * return:                              void
5338  */
5339 static void
5340 megasas_destroy_irqs(struct megasas_instance *instance) {
5341
5342         int i;
5343
5344         if (instance->msix_vectors)
5345                 for (i = 0; i < instance->msix_vectors; i++) {
5346                         free_irq(pci_irq_vector(instance->pdev, i),
5347                                  &instance->irq_context[i]);
5348                 }
5349         else
5350                 free_irq(pci_irq_vector(instance->pdev, 0),
5351                          &instance->irq_context[0]);
5352 }
5353
5354 /**
5355  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
5356  * @instance:                           Adapter soft state
5357  * @is_probe:                           Driver probe check
5358  *
5359  * Return 0 on success.
5360  */
5361 void
5362 megasas_setup_jbod_map(struct megasas_instance *instance)
5363 {
5364         int i;
5365         struct fusion_context *fusion = instance->ctrl_context;
5366         u32 pd_seq_map_sz;
5367
5368         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5369                 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5370
5371         if (reset_devices || !fusion ||
5372                 !instance->ctrl_info_buf->adapterOperations3.useSeqNumJbodFP) {
5373                 dev_info(&instance->pdev->dev,
5374                         "Jbod map is not supported %s %d\n",
5375                         __func__, __LINE__);
5376                 instance->use_seqnum_jbod_fp = false;
5377                 return;
5378         }
5379
5380         if (fusion->pd_seq_sync[0])
5381                 goto skip_alloc;
5382
5383         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5384                 fusion->pd_seq_sync[i] = dma_alloc_coherent
5385                         (&instance->pdev->dev, pd_seq_map_sz,
5386                         &fusion->pd_seq_phys[i], GFP_KERNEL);
5387                 if (!fusion->pd_seq_sync[i]) {
5388                         dev_err(&instance->pdev->dev,
5389                                 "Failed to allocate memory from %s %d\n",
5390                                 __func__, __LINE__);
5391                         if (i == 1) {
5392                                 dma_free_coherent(&instance->pdev->dev,
5393                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
5394                                         fusion->pd_seq_phys[0]);
5395                                 fusion->pd_seq_sync[0] = NULL;
5396                         }
5397                         instance->use_seqnum_jbod_fp = false;
5398                         return;
5399                 }
5400         }
5401
5402 skip_alloc:
5403         if (!megasas_sync_pd_seq_num(instance, false) &&
5404                 !megasas_sync_pd_seq_num(instance, true))
5405                 instance->use_seqnum_jbod_fp = true;
5406         else
5407                 instance->use_seqnum_jbod_fp = false;
5408 }
5409
5410 static void megasas_setup_reply_map(struct megasas_instance *instance)
5411 {
5412         const struct cpumask *mask;
5413         unsigned int queue, cpu;
5414
5415         for (queue = 0; queue < instance->msix_vectors; queue++) {
5416                 mask = pci_irq_get_affinity(instance->pdev, queue);
5417                 if (!mask)
5418                         goto fallback;
5419
5420                 for_each_cpu(cpu, mask)
5421                         instance->reply_map[cpu] = queue;
5422         }
5423         return;
5424
5425 fallback:
5426         for_each_possible_cpu(cpu)
5427                 instance->reply_map[cpu] = cpu % instance->msix_vectors;
5428 }
5429
5430 /**
5431  * megasas_get_device_list -    Get the PD and LD device list from FW.
5432  * @instance:                   Adapter soft state
5433  * @return:                     Success or failure
5434  *
5435  * Issue DCMDs to Firmware to get the PD and LD list.
5436  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5437  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5438  */
5439 static
5440 int megasas_get_device_list(struct megasas_instance *instance)
5441 {
5442         memset(instance->pd_list, 0,
5443                (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5444         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5445
5446         if (instance->enable_fw_dev_list) {
5447                 if (megasas_host_device_list_query(instance, true))
5448                         return FAILED;
5449         } else {
5450                 if (megasas_get_pd_list(instance) < 0) {
5451                         dev_err(&instance->pdev->dev, "failed to get PD list\n");
5452                         return FAILED;
5453                 }
5454
5455                 if (megasas_ld_list_query(instance,
5456                                           MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5457                         dev_err(&instance->pdev->dev, "failed to get LD list\n");
5458                         return FAILED;
5459                 }
5460         }
5461
5462         return SUCCESS;
5463 }
5464 /**
5465  * megasas_init_fw -    Initializes the FW
5466  * @instance:           Adapter soft state
5467  *
5468  * This is the main function for initializing firmware
5469  */
5470
5471 static int megasas_init_fw(struct megasas_instance *instance)
5472 {
5473         u32 max_sectors_1;
5474         u32 max_sectors_2, tmp_sectors, msix_enable;
5475         u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5476         resource_size_t base_addr;
5477         struct megasas_ctrl_info *ctrl_info = NULL;
5478         unsigned long bar_list;
5479         int i, j, loop, fw_msix_count = 0;
5480         struct IOV_111 *iovPtr;
5481         struct fusion_context *fusion;
5482         bool do_adp_reset = true;
5483
5484         fusion = instance->ctrl_context;
5485
5486         /* Find first memory bar */
5487         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5488         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5489         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5490                                          "megasas: LSI")) {
5491                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5492                 return -EBUSY;
5493         }
5494
5495         base_addr = pci_resource_start(instance->pdev, instance->bar);
5496         instance->reg_set = ioremap_nocache(base_addr, 8192);
5497
5498         if (!instance->reg_set) {
5499                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5500                 goto fail_ioremap;
5501         }
5502
5503         if (instance->adapter_type != MFI_SERIES)
5504                 instance->instancet = &megasas_instance_template_fusion;
5505         else {
5506                 switch (instance->pdev->device) {
5507                 case PCI_DEVICE_ID_LSI_SAS1078R:
5508                 case PCI_DEVICE_ID_LSI_SAS1078DE:
5509                         instance->instancet = &megasas_instance_template_ppc;
5510                         break;
5511                 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5512                 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5513                         instance->instancet = &megasas_instance_template_gen2;
5514                         break;
5515                 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5516                 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5517                         instance->instancet = &megasas_instance_template_skinny;
5518                         break;
5519                 case PCI_DEVICE_ID_LSI_SAS1064R:
5520                 case PCI_DEVICE_ID_DELL_PERC5:
5521                 default:
5522                         instance->instancet = &megasas_instance_template_xscale;
5523                         instance->pd_list_not_supported = 1;
5524                         break;
5525                 }
5526         }
5527
5528         if (megasas_transition_to_ready(instance, 0)) {
5529                 if (instance->adapter_type >= INVADER_SERIES) {
5530                         status_reg = instance->instancet->read_fw_status_reg(
5531                                         instance);
5532                         do_adp_reset = status_reg & MFI_RESET_ADAPTER;
5533                 }
5534
5535                 if (do_adp_reset) {
5536                         atomic_set(&instance->fw_reset_no_pci_access, 1);
5537                         instance->instancet->adp_reset
5538                                 (instance, instance->reg_set);
5539                         atomic_set(&instance->fw_reset_no_pci_access, 0);
5540                         dev_info(&instance->pdev->dev,
5541                                  "FW restarted successfully from %s!\n",
5542                                  __func__);
5543
5544                         /*waiting for about 30 second before retry*/
5545                         ssleep(30);
5546
5547                         if (megasas_transition_to_ready(instance, 0))
5548                                 goto fail_ready_state;
5549                 } else {
5550                         goto fail_ready_state;
5551                 }
5552         }
5553
5554         megasas_init_ctrl_params(instance);
5555
5556         if (megasas_set_dma_mask(instance))
5557                 goto fail_ready_state;
5558
5559         if (megasas_alloc_ctrl_mem(instance))
5560                 goto fail_alloc_dma_buf;
5561
5562         if (megasas_alloc_ctrl_dma_buffers(instance))
5563                 goto fail_alloc_dma_buf;
5564
5565         fusion = instance->ctrl_context;
5566
5567         if (instance->adapter_type >= VENTURA_SERIES) {
5568                 scratch_pad_2 =
5569                         megasas_readl(instance,
5570                                       &instance->reg_set->outbound_scratch_pad_2);
5571                 instance->max_raid_mapsize = ((scratch_pad_2 >>
5572                         MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
5573                         MR_MAX_RAID_MAP_SIZE_MASK);
5574         }
5575
5576         /* Check if MSI-X is supported while in ready state */
5577         msix_enable = (instance->instancet->read_fw_status_reg(instance) &
5578                        0x4000000) >> 0x1a;
5579         if (msix_enable && !msix_disable) {
5580                 int irq_flags = PCI_IRQ_MSIX;
5581
5582                 scratch_pad_1 = megasas_readl
5583                         (instance, &instance->reg_set->outbound_scratch_pad_1);
5584                 /* Check max MSI-X vectors */
5585                 if (fusion) {
5586                         if (instance->adapter_type == THUNDERBOLT_SERIES) {
5587                                 /* Thunderbolt Series*/
5588                                 instance->msix_vectors = (scratch_pad_1
5589                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5590                                 fw_msix_count = instance->msix_vectors;
5591                         } else {
5592                                 instance->msix_vectors = ((scratch_pad_1
5593                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5594                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5595
5596                                 /*
5597                                  * For Invader series, > 8 MSI-x vectors
5598                                  * supported by FW/HW implies combined
5599                                  * reply queue mode is enabled.
5600                                  * For Ventura series, > 16 MSI-x vectors
5601                                  * supported by FW/HW implies combined
5602                                  * reply queue mode is enabled.
5603                                  */
5604                                 switch (instance->adapter_type) {
5605                                 case INVADER_SERIES:
5606                                         if (instance->msix_vectors > 8)
5607                                                 instance->msix_combined = true;
5608                                         break;
5609                                 case AERO_SERIES:
5610                                 case VENTURA_SERIES:
5611                                         if (instance->msix_vectors > 16)
5612                                                 instance->msix_combined = true;
5613                                         break;
5614                                 }
5615
5616                                 if (rdpq_enable)
5617                                         instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
5618                                                                 1 : 0;
5619                                 fw_msix_count = instance->msix_vectors;
5620                                 /* Save 1-15 reply post index address to local memory
5621                                  * Index 0 is already saved from reg offset
5622                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5623                                  */
5624                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5625                                         instance->reply_post_host_index_addr[loop] =
5626                                                 (u32 __iomem *)
5627                                                 ((u8 __iomem *)instance->reg_set +
5628                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5629                                                 + (loop * 0x10));
5630                                 }
5631                         }
5632                         if (msix_vectors)
5633                                 instance->msix_vectors = min(msix_vectors,
5634                                         instance->msix_vectors);
5635                 } else /* MFI adapters */
5636                         instance->msix_vectors = 1;
5637                 /* Don't bother allocating more MSI-X vectors than cpus */
5638                 instance->msix_vectors = min(instance->msix_vectors,
5639                                              (unsigned int)num_online_cpus());
5640                 if (smp_affinity_enable)
5641                         irq_flags |= PCI_IRQ_AFFINITY;
5642                 i = pci_alloc_irq_vectors(instance->pdev, 1,
5643                                           instance->msix_vectors, irq_flags);
5644                 if (i > 0)
5645                         instance->msix_vectors = i;
5646                 else
5647                         instance->msix_vectors = 0;
5648         }
5649         /*
5650          * MSI-X host index 0 is common for all adapter.
5651          * It is used for all MPT based Adapters.
5652          */
5653         if (instance->msix_combined) {
5654                 instance->reply_post_host_index_addr[0] =
5655                                 (u32 *)((u8 *)instance->reg_set +
5656                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
5657         } else {
5658                 instance->reply_post_host_index_addr[0] =
5659                         (u32 *)((u8 *)instance->reg_set +
5660                         MPI2_REPLY_POST_HOST_INDEX_OFFSET);
5661         }
5662
5663         if (!instance->msix_vectors) {
5664                 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
5665                 if (i < 0)
5666                         goto fail_init_adapter;
5667         }
5668
5669         megasas_setup_reply_map(instance);
5670
5671         dev_info(&instance->pdev->dev,
5672                 "firmware supports msix\t: (%d)", fw_msix_count);
5673         dev_info(&instance->pdev->dev,
5674                 "current msix/online cpus\t: (%d/%d)\n",
5675                 instance->msix_vectors, (unsigned int)num_online_cpus());
5676         dev_info(&instance->pdev->dev,
5677                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5678
5679         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5680                 (unsigned long)instance);
5681
5682         /*
5683          * Below are default value for legacy Firmware.
5684          * non-fusion based controllers
5685          */
5686         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5687         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5688         /* Get operational params, sge flags, send init cmd to controller */
5689         if (instance->instancet->init_adapter(instance))
5690                 goto fail_init_adapter;
5691
5692         if (instance->adapter_type >= VENTURA_SERIES) {
5693                 scratch_pad_3 =
5694                         megasas_readl(instance,
5695                                       &instance->reg_set->outbound_scratch_pad_3);
5696                 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
5697                         MR_DEFAULT_NVME_PAGE_SHIFT)
5698                         instance->nvme_page_size =
5699                                 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
5700
5701                 dev_info(&instance->pdev->dev,
5702                          "NVME page size\t: (%d)\n", instance->nvme_page_size);
5703         }
5704
5705         if (instance->msix_vectors ?
5706                 megasas_setup_irqs_msix(instance, 1) :
5707                 megasas_setup_irqs_ioapic(instance))
5708                 goto fail_init_adapter;
5709
5710         instance->instancet->enable_intr(instance);
5711
5712         dev_info(&instance->pdev->dev, "INIT adapter done\n");
5713
5714         megasas_setup_jbod_map(instance);
5715
5716         if (megasas_get_device_list(instance) != SUCCESS) {
5717                 dev_err(&instance->pdev->dev,
5718                         "%s: megasas_get_device_list failed\n",
5719                         __func__);
5720                 goto fail_get_ld_pd_list;
5721         }
5722
5723         /* stream detection initialization */
5724         if (instance->adapter_type >= VENTURA_SERIES) {
5725                 fusion->stream_detect_by_ld =
5726                         kcalloc(MAX_LOGICAL_DRIVES_EXT,
5727                                 sizeof(struct LD_STREAM_DETECT *),
5728                                 GFP_KERNEL);
5729                 if (!fusion->stream_detect_by_ld) {
5730                         dev_err(&instance->pdev->dev,
5731                                 "unable to allocate stream detection for pool of LDs\n");
5732                         goto fail_get_ld_pd_list;
5733                 }
5734                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
5735                         fusion->stream_detect_by_ld[i] =
5736                                 kzalloc(sizeof(struct LD_STREAM_DETECT),
5737                                 GFP_KERNEL);
5738                         if (!fusion->stream_detect_by_ld[i]) {
5739                                 dev_err(&instance->pdev->dev,
5740                                         "unable to allocate stream detect by LD\n ");
5741                                 for (j = 0; j < i; ++j)
5742                                         kfree(fusion->stream_detect_by_ld[j]);
5743                                 kfree(fusion->stream_detect_by_ld);
5744                                 fusion->stream_detect_by_ld = NULL;
5745                                 goto fail_get_ld_pd_list;
5746                         }
5747                         fusion->stream_detect_by_ld[i]->mru_bit_map
5748                                 = MR_STREAM_BITMAP;
5749                 }
5750         }
5751
5752         /*
5753          * Compute the max allowed sectors per IO: The controller info has two
5754          * limits on max sectors. Driver should use the minimum of these two.
5755          *
5756          * 1 << stripe_sz_ops.min = max sectors per strip
5757          *
5758          * Note that older firmwares ( < FW ver 30) didn't report information
5759          * to calculate max_sectors_1. So the number ended up as zero always.
5760          */
5761         tmp_sectors = 0;
5762         ctrl_info = instance->ctrl_info_buf;
5763
5764         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
5765                 le16_to_cpu(ctrl_info->max_strips_per_io);
5766         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5767
5768         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5769
5770         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
5771         instance->passive = ctrl_info->cluster.passive;
5772         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
5773         instance->UnevenSpanSupport =
5774                 ctrl_info->adapterOperations2.supportUnevenSpans;
5775         if (instance->UnevenSpanSupport) {
5776                 struct fusion_context *fusion = instance->ctrl_context;
5777                 if (MR_ValidateMapInfo(instance, instance->map_id))
5778                         fusion->fast_path_io = 1;
5779                 else
5780                         fusion->fast_path_io = 0;
5781
5782         }
5783         if (ctrl_info->host_interface.SRIOV) {
5784                 instance->requestorId = ctrl_info->iov.requestorId;
5785                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
5786                         if (!ctrl_info->adapterOperations2.activePassive)
5787                             instance->PlasmaFW111 = 1;
5788
5789                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
5790                             instance->PlasmaFW111 ? "1.11" : "new");
5791
5792                         if (instance->PlasmaFW111) {
5793                             iovPtr = (struct IOV_111 *)
5794                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
5795                             instance->requestorId = iovPtr->requestorId;
5796                         }
5797                 }
5798                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
5799                         instance->requestorId);
5800         }
5801
5802         instance->crash_dump_fw_support =
5803                 ctrl_info->adapterOperations3.supportCrashDump;
5804         instance->crash_dump_drv_support =
5805                 (instance->crash_dump_fw_support &&
5806                 instance->crash_dump_buf);
5807         if (instance->crash_dump_drv_support)
5808                 megasas_set_crash_dump_params(instance,
5809                         MR_CRASH_BUF_TURN_OFF);
5810
5811         else {
5812                 if (instance->crash_dump_buf)
5813                         dma_free_coherent(&instance->pdev->dev,
5814                                 CRASH_DMA_BUF_SIZE,
5815                                 instance->crash_dump_buf,
5816                                 instance->crash_dump_h);
5817                 instance->crash_dump_buf = NULL;
5818         }
5819
5820         if (instance->snapdump_wait_time) {
5821                 megasas_get_snapdump_properties(instance);
5822                 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
5823                          instance->snapdump_wait_time);
5824         }
5825
5826         dev_info(&instance->pdev->dev,
5827                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
5828                 le16_to_cpu(ctrl_info->pci.vendor_id),
5829                 le16_to_cpu(ctrl_info->pci.device_id),
5830                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
5831                 le16_to_cpu(ctrl_info->pci.sub_device_id));
5832         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
5833                 instance->UnevenSpanSupport ? "yes" : "no");
5834         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
5835                 instance->crash_dump_drv_support ? "yes" : "no");
5836         dev_info(&instance->pdev->dev, "jbod sync map           : %s\n",
5837                 instance->use_seqnum_jbod_fp ? "yes" : "no");
5838
5839         instance->max_sectors_per_req = instance->max_num_sge *
5840                                                 SGE_BUFFER_SIZE / 512;
5841         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
5842                 instance->max_sectors_per_req = tmp_sectors;
5843
5844         /* Check for valid throttlequeuedepth module parameter */
5845         if (throttlequeuedepth &&
5846                         throttlequeuedepth <= instance->max_scsi_cmds)
5847                 instance->throttlequeuedepth = throttlequeuedepth;
5848         else
5849                 instance->throttlequeuedepth =
5850                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
5851
5852         if ((resetwaittime < 1) ||
5853             (resetwaittime > MEGASAS_RESET_WAIT_TIME))
5854                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
5855
5856         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
5857                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
5858
5859         /* Launch SR-IOV heartbeat timer */
5860         if (instance->requestorId) {
5861                 if (!megasas_sriov_start_heartbeat(instance, 1)) {
5862                         megasas_start_timer(instance);
5863                 } else {
5864                         instance->skip_heartbeat_timer_del = 1;
5865                         goto fail_get_ld_pd_list;
5866                 }
5867         }
5868
5869         /*
5870          * Create and start watchdog thread which will monitor
5871          * controller state every 1 sec and trigger OCR when
5872          * it enters fault state
5873          */
5874         if (instance->adapter_type != MFI_SERIES)
5875                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
5876                         goto fail_start_watchdog;
5877
5878         return 0;
5879
5880 fail_start_watchdog:
5881         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5882                 del_timer_sync(&instance->sriov_heartbeat_timer);
5883 fail_get_ld_pd_list:
5884         instance->instancet->disable_intr(instance);
5885         megasas_destroy_irqs(instance);
5886 fail_init_adapter:
5887         if (instance->msix_vectors)
5888                 pci_free_irq_vectors(instance->pdev);
5889         instance->msix_vectors = 0;
5890 fail_alloc_dma_buf:
5891         megasas_free_ctrl_dma_buffers(instance);
5892         megasas_free_ctrl_mem(instance);
5893 fail_ready_state:
5894         iounmap(instance->reg_set);
5895
5896 fail_ioremap:
5897         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5898
5899         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5900                 __func__, __LINE__);
5901         return -EINVAL;
5902 }
5903
5904 /**
5905  * megasas_release_mfi -        Reverses the FW initialization
5906  * @instance:                   Adapter soft state
5907  */
5908 static void megasas_release_mfi(struct megasas_instance *instance)
5909 {
5910         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5911
5912         if (instance->reply_queue)
5913                 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5914                             instance->reply_queue, instance->reply_queue_h);
5915
5916         megasas_free_cmds(instance);
5917
5918         iounmap(instance->reg_set);
5919
5920         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5921 }
5922
5923 /**
5924  * megasas_get_seq_num -        Gets latest event sequence numbers
5925  * @instance:                   Adapter soft state
5926  * @eli:                        FW event log sequence numbers information
5927  *
5928  * FW maintains a log of all events in a non-volatile area. Upper layers would
5929  * usually find out the latest sequence number of the events, the seq number at
5930  * the boot etc. They would "read" all the events below the latest seq number
5931  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
5932  * number), they would subsribe to AEN (asynchronous event notification) and
5933  * wait for the events to happen.
5934  */
5935 static int
5936 megasas_get_seq_num(struct megasas_instance *instance,
5937                     struct megasas_evt_log_info *eli)
5938 {
5939         struct megasas_cmd *cmd;
5940         struct megasas_dcmd_frame *dcmd;
5941         struct megasas_evt_log_info *el_info;
5942         dma_addr_t el_info_h = 0;
5943         int ret;
5944
5945         cmd = megasas_get_cmd(instance);
5946
5947         if (!cmd) {
5948                 return -ENOMEM;
5949         }
5950
5951         dcmd = &cmd->frame->dcmd;
5952         el_info = dma_alloc_coherent(&instance->pdev->dev,
5953                                      sizeof(struct megasas_evt_log_info),
5954                                      &el_info_h, GFP_KERNEL);
5955         if (!el_info) {
5956                 megasas_return_cmd(instance, cmd);
5957                 return -ENOMEM;
5958         }
5959
5960         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5961
5962         dcmd->cmd = MFI_CMD_DCMD;
5963         dcmd->cmd_status = 0x0;
5964         dcmd->sge_count = 1;
5965         dcmd->flags = MFI_FRAME_DIR_READ;
5966         dcmd->timeout = 0;
5967         dcmd->pad_0 = 0;
5968         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5969         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5970
5971         megasas_set_dma_settings(instance, dcmd, el_info_h,
5972                                  sizeof(struct megasas_evt_log_info));
5973
5974         ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5975         if (ret != DCMD_SUCCESS) {
5976                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5977                         __func__, __LINE__);
5978                 goto dcmd_failed;
5979         }
5980
5981         /*
5982          * Copy the data back into callers buffer
5983          */
5984         eli->newest_seq_num = el_info->newest_seq_num;
5985         eli->oldest_seq_num = el_info->oldest_seq_num;
5986         eli->clear_seq_num = el_info->clear_seq_num;
5987         eli->shutdown_seq_num = el_info->shutdown_seq_num;
5988         eli->boot_seq_num = el_info->boot_seq_num;
5989
5990 dcmd_failed:
5991         dma_free_coherent(&instance->pdev->dev,
5992                         sizeof(struct megasas_evt_log_info),
5993                         el_info, el_info_h);
5994
5995         megasas_return_cmd(instance, cmd);
5996
5997         return ret;
5998 }
5999
6000 /**
6001  * megasas_register_aen -       Registers for asynchronous event notification
6002  * @instance:                   Adapter soft state
6003  * @seq_num:                    The starting sequence number
6004  * @class_locale:               Class of the event
6005  *
6006  * This function subscribes for AEN for events beyond the @seq_num. It requests
6007  * to be notified if and only if the event is of type @class_locale
6008  */
6009 static int
6010 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6011                      u32 class_locale_word)
6012 {
6013         int ret_val;
6014         struct megasas_cmd *cmd;
6015         struct megasas_dcmd_frame *dcmd;
6016         union megasas_evt_class_locale curr_aen;
6017         union megasas_evt_class_locale prev_aen;
6018
6019         /*
6020          * If there an AEN pending already (aen_cmd), check if the
6021          * class_locale of that pending AEN is inclusive of the new
6022          * AEN request we currently have. If it is, then we don't have
6023          * to do anything. In other words, whichever events the current
6024          * AEN request is subscribing to, have already been subscribed
6025          * to.
6026          *
6027          * If the old_cmd is _not_ inclusive, then we have to abort
6028          * that command, form a class_locale that is superset of both
6029          * old and current and re-issue to the FW
6030          */
6031
6032         curr_aen.word = class_locale_word;
6033
6034         if (instance->aen_cmd) {
6035
6036                 prev_aen.word =
6037                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6038
6039                 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6040                     (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6041                         dev_info(&instance->pdev->dev,
6042                                  "%s %d out of range class %d send by application\n",
6043                                  __func__, __LINE__, curr_aen.members.class);
6044                         return 0;
6045                 }
6046
6047                 /*
6048                  * A class whose enum value is smaller is inclusive of all
6049                  * higher values. If a PROGRESS (= -1) was previously
6050                  * registered, then a new registration requests for higher
6051                  * classes need not be sent to FW. They are automatically
6052                  * included.
6053                  *
6054                  * Locale numbers don't have such hierarchy. They are bitmap
6055                  * values
6056                  */
6057                 if ((prev_aen.members.class <= curr_aen.members.class) &&
6058                     !((prev_aen.members.locale & curr_aen.members.locale) ^
6059                       curr_aen.members.locale)) {
6060                         /*
6061                          * Previously issued event registration includes
6062                          * current request. Nothing to do.
6063                          */
6064                         return 0;
6065                 } else {
6066                         curr_aen.members.locale |= prev_aen.members.locale;
6067
6068                         if (prev_aen.members.class < curr_aen.members.class)
6069                                 curr_aen.members.class = prev_aen.members.class;
6070
6071                         instance->aen_cmd->abort_aen = 1;
6072                         ret_val = megasas_issue_blocked_abort_cmd(instance,
6073                                                                   instance->
6074                                                                   aen_cmd, 30);
6075
6076                         if (ret_val) {
6077                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6078                                        "previous AEN command\n");
6079                                 return ret_val;
6080                         }
6081                 }
6082         }
6083
6084         cmd = megasas_get_cmd(instance);
6085
6086         if (!cmd)
6087                 return -ENOMEM;
6088
6089         dcmd = &cmd->frame->dcmd;
6090
6091         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6092
6093         /*
6094          * Prepare DCMD for aen registration
6095          */
6096         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6097
6098         dcmd->cmd = MFI_CMD_DCMD;
6099         dcmd->cmd_status = 0x0;
6100         dcmd->sge_count = 1;
6101         dcmd->flags = MFI_FRAME_DIR_READ;
6102         dcmd->timeout = 0;
6103         dcmd->pad_0 = 0;
6104         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6105         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6106         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6107         instance->last_seq_num = seq_num;
6108         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6109
6110         megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6111                                  sizeof(struct megasas_evt_detail));
6112
6113         if (instance->aen_cmd != NULL) {
6114                 megasas_return_cmd(instance, cmd);
6115                 return 0;
6116         }
6117
6118         /*
6119          * Store reference to the cmd used to register for AEN. When an
6120          * application wants us to register for AEN, we have to abort this
6121          * cmd and re-register with a new EVENT LOCALE supplied by that app
6122          */
6123         instance->aen_cmd = cmd;
6124
6125         /*
6126          * Issue the aen registration frame
6127          */
6128         instance->instancet->issue_dcmd(instance, cmd);
6129
6130         return 0;
6131 }
6132
6133 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6134  *
6135  * This DCMD will fetch few properties of LD/system PD defined
6136  * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6137  *
6138  * DCMD send by drivers whenever new target is added to the OS.
6139  *
6140  * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
6141  * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
6142  *                       0 = system PD, 1 = LD.
6143  * dcmd.mbox.s[1]      - TargetID for LD/system PD.
6144  * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
6145  *
6146  * @instance:           Adapter soft state
6147  * @sdev:               OS provided scsi device
6148  *
6149  * Returns 0 on success non-zero on failure.
6150  */
6151 int
6152 megasas_get_target_prop(struct megasas_instance *instance,
6153                         struct scsi_device *sdev)
6154 {
6155         int ret;
6156         struct megasas_cmd *cmd;
6157         struct megasas_dcmd_frame *dcmd;
6158         u16 targetId = (sdev->channel % 2) + sdev->id;
6159
6160         cmd = megasas_get_cmd(instance);
6161
6162         if (!cmd) {
6163                 dev_err(&instance->pdev->dev,
6164                         "Failed to get cmd %s\n", __func__);
6165                 return -ENOMEM;
6166         }
6167
6168         dcmd = &cmd->frame->dcmd;
6169
6170         memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6171         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6172         dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6173
6174         dcmd->mbox.s[1] = cpu_to_le16(targetId);
6175         dcmd->cmd = MFI_CMD_DCMD;
6176         dcmd->cmd_status = 0xFF;
6177         dcmd->sge_count = 1;
6178         dcmd->flags = MFI_FRAME_DIR_READ;
6179         dcmd->timeout = 0;
6180         dcmd->pad_0 = 0;
6181         dcmd->data_xfer_len =
6182                 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6183         dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6184
6185         megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6186                                  sizeof(struct MR_TARGET_PROPERTIES));
6187
6188         if ((instance->adapter_type != MFI_SERIES) &&
6189             !instance->mask_interrupts)
6190                 ret = megasas_issue_blocked_cmd(instance,
6191                                                 cmd, MFI_IO_TIMEOUT_SECS);
6192         else
6193                 ret = megasas_issue_polled(instance, cmd);
6194
6195         switch (ret) {
6196         case DCMD_TIMEOUT:
6197                 switch (dcmd_timeout_ocr_possible(instance)) {
6198                 case INITIATE_OCR:
6199                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6200                         megasas_reset_fusion(instance->host,
6201                                              MFI_IO_TIMEOUT_OCR);
6202                         break;
6203                 case KILL_ADAPTER:
6204                         megaraid_sas_kill_hba(instance);
6205                         break;
6206                 case IGNORE_TIMEOUT:
6207                         dev_info(&instance->pdev->dev,
6208                                  "Ignore DCMD timeout: %s %d\n",
6209                                  __func__, __LINE__);
6210                         break;
6211                 }
6212                 break;
6213
6214         default:
6215                 megasas_return_cmd(instance, cmd);
6216         }
6217         if (ret != DCMD_SUCCESS)
6218                 dev_err(&instance->pdev->dev,
6219                         "return from %s %d return value %d\n",
6220                         __func__, __LINE__, ret);
6221
6222         return ret;
6223 }
6224
6225 /**
6226  * megasas_start_aen -  Subscribes to AEN during driver load time
6227  * @instance:           Adapter soft state
6228  */
6229 static int megasas_start_aen(struct megasas_instance *instance)
6230 {
6231         struct megasas_evt_log_info eli;
6232         union megasas_evt_class_locale class_locale;
6233
6234         /*
6235          * Get the latest sequence number from FW
6236          */
6237         memset(&eli, 0, sizeof(eli));
6238
6239         if (megasas_get_seq_num(instance, &eli))
6240                 return -1;
6241
6242         /*
6243          * Register AEN with FW for latest sequence number plus 1
6244          */
6245         class_locale.members.reserved = 0;
6246         class_locale.members.locale = MR_EVT_LOCALE_ALL;
6247         class_locale.members.class = MR_EVT_CLASS_DEBUG;
6248
6249         return megasas_register_aen(instance,
6250                         le32_to_cpu(eli.newest_seq_num) + 1,
6251                         class_locale.word);
6252 }
6253
6254 /**
6255  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
6256  * @instance:           Adapter soft state
6257  */
6258 static int megasas_io_attach(struct megasas_instance *instance)
6259 {
6260         struct Scsi_Host *host = instance->host;
6261
6262         /*
6263          * Export parameters required by SCSI mid-layer
6264          */
6265         host->unique_id = instance->unique_id;
6266         host->can_queue = instance->max_scsi_cmds;
6267         host->this_id = instance->init_id;
6268         host->sg_tablesize = instance->max_num_sge;
6269
6270         if (instance->fw_support_ieee)
6271                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6272
6273         /*
6274          * Check if the module parameter value for max_sectors can be used
6275          */
6276         if (max_sectors && max_sectors < instance->max_sectors_per_req)
6277                 instance->max_sectors_per_req = max_sectors;
6278         else {
6279                 if (max_sectors) {
6280                         if (((instance->pdev->device ==
6281                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6282                                 (instance->pdev->device ==
6283                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6284                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6285                                 instance->max_sectors_per_req = max_sectors;
6286                         } else {
6287                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6288                                 "and <= %d (or < 1MB for GEN2 controller)\n",
6289                                 instance->max_sectors_per_req);
6290                         }
6291                 }
6292         }
6293
6294         host->max_sectors = instance->max_sectors_per_req;
6295         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6296         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6297         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6298         host->max_lun = MEGASAS_MAX_LUN;
6299         host->max_cmd_len = 16;
6300
6301         /*
6302          * Notify the mid-layer about the new controller
6303          */
6304         if (scsi_add_host(host, &instance->pdev->dev)) {
6305                 dev_err(&instance->pdev->dev,
6306                         "Failed to add host from %s %d\n",
6307                         __func__, __LINE__);
6308                 return -ENODEV;
6309         }
6310
6311         return 0;
6312 }
6313
6314 /**
6315  * megasas_set_dma_mask -       Set DMA mask for supported controllers
6316  *
6317  * @instance:           Adapter soft state
6318  * Description:
6319  *
6320  * For Ventura, driver/FW will operate in 63bit DMA addresses.
6321  *
6322  * For invader-
6323  *      By default, driver/FW will operate in 32bit DMA addresses
6324  *      for consistent DMA mapping but if 32 bit consistent
6325  *      DMA mask fails, driver will try with 63 bit consistent
6326  *      mask provided FW is true 63bit DMA capable
6327  *
6328  * For older controllers(Thunderbolt and MFI based adapters)-
6329  *      driver/FW will operate in 32 bit consistent DMA addresses.
6330  */
6331 static int
6332 megasas_set_dma_mask(struct megasas_instance *instance)
6333 {
6334         u64 consistent_mask;
6335         struct pci_dev *pdev;
6336         u32 scratch_pad_1;
6337
6338         pdev = instance->pdev;
6339         consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6340                                 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6341
6342         if (IS_DMA64) {
6343                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6344                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6345                         goto fail_set_dma_mask;
6346
6347                 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6348                     (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6349                      dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6350                         /*
6351                          * If 32 bit DMA mask fails, then try for 64 bit mask
6352                          * for FW capable of handling 64 bit DMA.
6353                          */
6354                         scratch_pad_1 = megasas_readl
6355                                 (instance, &instance->reg_set->outbound_scratch_pad_1);
6356
6357                         if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6358                                 goto fail_set_dma_mask;
6359                         else if (dma_set_mask_and_coherent(&pdev->dev,
6360                                                            DMA_BIT_MASK(63)))
6361                                 goto fail_set_dma_mask;
6362                 }
6363         } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6364                 goto fail_set_dma_mask;
6365
6366         if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6367                 instance->consistent_mask_64bit = false;
6368         else
6369                 instance->consistent_mask_64bit = true;
6370
6371         dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6372                  ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6373                  (instance->consistent_mask_64bit ? "63" : "32"));
6374
6375         return 0;
6376
6377 fail_set_dma_mask:
6378         dev_err(&pdev->dev, "Failed to set DMA mask\n");
6379         return -1;
6380
6381 }
6382
6383 /*
6384  * megasas_set_adapter_type -   Set adapter type.
6385  *                              Supported controllers can be divided in
6386  *                              different categories-
6387  *                                      enum MR_ADAPTER_TYPE {
6388  *                                              MFI_SERIES = 1,
6389  *                                              THUNDERBOLT_SERIES = 2,
6390  *                                              INVADER_SERIES = 3,
6391  *                                              VENTURA_SERIES = 4,
6392  *                                              AERO_SERIES = 5,
6393  *                                      };
6394  * @instance:                   Adapter soft state
6395  * return:                      void
6396  */
6397 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6398 {
6399         if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6400             (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6401                 instance->adapter_type = MFI_SERIES;
6402         } else {
6403                 switch (instance->pdev->device) {
6404                 case PCI_DEVICE_ID_LSI_AERO_10E1:
6405                 case PCI_DEVICE_ID_LSI_AERO_10E2:
6406                 case PCI_DEVICE_ID_LSI_AERO_10E5:
6407                 case PCI_DEVICE_ID_LSI_AERO_10E6:
6408                         instance->adapter_type = AERO_SERIES;
6409                         break;
6410                 case PCI_DEVICE_ID_LSI_VENTURA:
6411                 case PCI_DEVICE_ID_LSI_CRUSADER:
6412                 case PCI_DEVICE_ID_LSI_HARPOON:
6413                 case PCI_DEVICE_ID_LSI_TOMCAT:
6414                 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6415                 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6416                         instance->adapter_type = VENTURA_SERIES;
6417                         break;
6418                 case PCI_DEVICE_ID_LSI_FUSION:
6419                 case PCI_DEVICE_ID_LSI_PLASMA:
6420                         instance->adapter_type = THUNDERBOLT_SERIES;
6421                         break;
6422                 case PCI_DEVICE_ID_LSI_INVADER:
6423                 case PCI_DEVICE_ID_LSI_INTRUDER:
6424                 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6425                 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6426                 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6427                 case PCI_DEVICE_ID_LSI_FURY:
6428                         instance->adapter_type = INVADER_SERIES;
6429                         break;
6430                 default: /* For all other supported controllers */
6431                         instance->adapter_type = MFI_SERIES;
6432                         break;
6433                 }
6434         }
6435 }
6436
6437 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6438 {
6439         instance->producer = dma_alloc_coherent(&instance->pdev->dev,
6440                         sizeof(u32), &instance->producer_h, GFP_KERNEL);
6441         instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
6442                         sizeof(u32), &instance->consumer_h, GFP_KERNEL);
6443
6444         if (!instance->producer || !instance->consumer) {
6445                 dev_err(&instance->pdev->dev,
6446                         "Failed to allocate memory for producer, consumer\n");
6447                 return -1;
6448         }
6449
6450         *instance->producer = 0;
6451         *instance->consumer = 0;
6452         return 0;
6453 }
6454
6455 /**
6456  * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
6457  *                              structures which are not common across MFI
6458  *                              adapters and fusion adapters.
6459  *                              For MFI based adapters, allocate producer and
6460  *                              consumer buffers. For fusion adapters, allocate
6461  *                              memory for fusion context.
6462  * @instance:                   Adapter soft state
6463  * return:                      0 for SUCCESS
6464  */
6465 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
6466 {
6467         instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
6468                                       GFP_KERNEL);
6469         if (!instance->reply_map)
6470                 return -ENOMEM;
6471
6472         switch (instance->adapter_type) {
6473         case MFI_SERIES:
6474                 if (megasas_alloc_mfi_ctrl_mem(instance))
6475                         goto fail;
6476                 break;
6477         case AERO_SERIES:
6478         case VENTURA_SERIES:
6479         case THUNDERBOLT_SERIES:
6480         case INVADER_SERIES:
6481                 if (megasas_alloc_fusion_context(instance))
6482                         goto fail;
6483                 break;
6484         }
6485
6486         return 0;
6487  fail:
6488         kfree(instance->reply_map);
6489         instance->reply_map = NULL;
6490         return -ENOMEM;
6491 }
6492
6493 /*
6494  * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
6495  *                              producer, consumer buffers for MFI adapters
6496  *
6497  * @instance -                  Adapter soft instance
6498  *
6499  */
6500 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
6501 {
6502         kfree(instance->reply_map);
6503         if (instance->adapter_type == MFI_SERIES) {
6504                 if (instance->producer)
6505                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6506                                             instance->producer,
6507                                             instance->producer_h);
6508                 if (instance->consumer)
6509                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6510                                             instance->consumer,
6511                                             instance->consumer_h);
6512         } else {
6513                 megasas_free_fusion_context(instance);
6514         }
6515 }
6516
6517 /**
6518  * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
6519  *                                      driver load time
6520  *
6521  * @instance-                           Adapter soft instance
6522  * @return-                             O for SUCCESS
6523  */
6524 static inline
6525 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
6526 {
6527         struct pci_dev *pdev = instance->pdev;
6528         struct fusion_context *fusion = instance->ctrl_context;
6529
6530         instance->evt_detail = dma_alloc_coherent(&pdev->dev,
6531                         sizeof(struct megasas_evt_detail),
6532                         &instance->evt_detail_h, GFP_KERNEL);
6533
6534         if (!instance->evt_detail) {
6535                 dev_err(&instance->pdev->dev,
6536                         "Failed to allocate event detail buffer\n");
6537                 return -ENOMEM;
6538         }
6539
6540         if (fusion) {
6541                 fusion->ioc_init_request =
6542                         dma_alloc_coherent(&pdev->dev,
6543                                            sizeof(struct MPI2_IOC_INIT_REQUEST),
6544                                            &fusion->ioc_init_request_phys,
6545                                            GFP_KERNEL);
6546
6547                 if (!fusion->ioc_init_request) {
6548                         dev_err(&pdev->dev,
6549                                 "Failed to allocate PD list buffer\n");
6550                         return -ENOMEM;
6551                 }
6552
6553                 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
6554                                 sizeof(struct MR_SNAPDUMP_PROPERTIES),
6555                                 &instance->snapdump_prop_h, GFP_KERNEL);
6556
6557                 if (!instance->snapdump_prop)
6558                         dev_err(&pdev->dev,
6559                                 "Failed to allocate snapdump properties buffer\n");
6560
6561                 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
6562                                                         HOST_DEVICE_LIST_SZ,
6563                                                         &instance->host_device_list_buf_h,
6564                                                         GFP_KERNEL);
6565
6566                 if (!instance->host_device_list_buf) {
6567                         dev_err(&pdev->dev,
6568                                 "Failed to allocate targetid list buffer\n");
6569                         return -ENOMEM;
6570                 }
6571
6572         }
6573
6574         instance->pd_list_buf =
6575                 dma_alloc_coherent(&pdev->dev,
6576                                      MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6577                                      &instance->pd_list_buf_h, GFP_KERNEL);
6578
6579         if (!instance->pd_list_buf) {
6580                 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
6581                 return -ENOMEM;
6582         }
6583
6584         instance->ctrl_info_buf =
6585                 dma_alloc_coherent(&pdev->dev,
6586                                      sizeof(struct megasas_ctrl_info),
6587                                      &instance->ctrl_info_buf_h, GFP_KERNEL);
6588
6589         if (!instance->ctrl_info_buf) {
6590                 dev_err(&pdev->dev,
6591                         "Failed to allocate controller info buffer\n");
6592                 return -ENOMEM;
6593         }
6594
6595         instance->ld_list_buf =
6596                 dma_alloc_coherent(&pdev->dev,
6597                                      sizeof(struct MR_LD_LIST),
6598                                      &instance->ld_list_buf_h, GFP_KERNEL);
6599
6600         if (!instance->ld_list_buf) {
6601                 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
6602                 return -ENOMEM;
6603         }
6604
6605         instance->ld_targetid_list_buf =
6606                 dma_alloc_coherent(&pdev->dev,
6607                                 sizeof(struct MR_LD_TARGETID_LIST),
6608                                 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
6609
6610         if (!instance->ld_targetid_list_buf) {
6611                 dev_err(&pdev->dev,
6612                         "Failed to allocate LD targetid list buffer\n");
6613                 return -ENOMEM;
6614         }
6615
6616         if (!reset_devices) {
6617                 instance->system_info_buf =
6618                         dma_alloc_coherent(&pdev->dev,
6619                                         sizeof(struct MR_DRV_SYSTEM_INFO),
6620                                         &instance->system_info_h, GFP_KERNEL);
6621                 instance->pd_info =
6622                         dma_alloc_coherent(&pdev->dev,
6623                                         sizeof(struct MR_PD_INFO),
6624                                         &instance->pd_info_h, GFP_KERNEL);
6625                 instance->tgt_prop =
6626                         dma_alloc_coherent(&pdev->dev,
6627                                         sizeof(struct MR_TARGET_PROPERTIES),
6628                                         &instance->tgt_prop_h, GFP_KERNEL);
6629                 instance->crash_dump_buf =
6630                         dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
6631                                         &instance->crash_dump_h, GFP_KERNEL);
6632
6633                 if (!instance->system_info_buf)
6634                         dev_err(&instance->pdev->dev,
6635                                 "Failed to allocate system info buffer\n");
6636
6637                 if (!instance->pd_info)
6638                         dev_err(&instance->pdev->dev,
6639                                 "Failed to allocate pd_info buffer\n");
6640
6641                 if (!instance->tgt_prop)
6642                         dev_err(&instance->pdev->dev,
6643                                 "Failed to allocate tgt_prop buffer\n");
6644
6645                 if (!instance->crash_dump_buf)
6646                         dev_err(&instance->pdev->dev,
6647                                 "Failed to allocate crash dump buffer\n");
6648         }
6649
6650         return 0;
6651 }
6652
6653 /*
6654  * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
6655  *                                      during driver load time
6656  *
6657  * @instance-                           Adapter soft instance
6658  *
6659  */
6660 static inline
6661 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
6662 {
6663         struct pci_dev *pdev = instance->pdev;
6664         struct fusion_context *fusion = instance->ctrl_context;
6665
6666         if (instance->evt_detail)
6667                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
6668                                     instance->evt_detail,
6669                                     instance->evt_detail_h);
6670
6671         if (fusion && fusion->ioc_init_request)
6672                 dma_free_coherent(&pdev->dev,
6673                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
6674                                   fusion->ioc_init_request,
6675                                   fusion->ioc_init_request_phys);
6676
6677         if (instance->pd_list_buf)
6678                 dma_free_coherent(&pdev->dev,
6679                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6680                                     instance->pd_list_buf,
6681                                     instance->pd_list_buf_h);
6682
6683         if (instance->ld_list_buf)
6684                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
6685                                     instance->ld_list_buf,
6686                                     instance->ld_list_buf_h);
6687
6688         if (instance->ld_targetid_list_buf)
6689                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
6690                                     instance->ld_targetid_list_buf,
6691                                     instance->ld_targetid_list_buf_h);
6692
6693         if (instance->ctrl_info_buf)
6694                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
6695                                     instance->ctrl_info_buf,
6696                                     instance->ctrl_info_buf_h);
6697
6698         if (instance->system_info_buf)
6699                 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
6700                                     instance->system_info_buf,
6701                                     instance->system_info_h);
6702
6703         if (instance->pd_info)
6704                 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
6705                                     instance->pd_info, instance->pd_info_h);
6706
6707         if (instance->tgt_prop)
6708                 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
6709                                     instance->tgt_prop, instance->tgt_prop_h);
6710
6711         if (instance->crash_dump_buf)
6712                 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
6713                                     instance->crash_dump_buf,
6714                                     instance->crash_dump_h);
6715
6716         if (instance->snapdump_prop)
6717                 dma_free_coherent(&pdev->dev,
6718                                   sizeof(struct MR_SNAPDUMP_PROPERTIES),
6719                                   instance->snapdump_prop,
6720                                   instance->snapdump_prop_h);
6721
6722         if (instance->host_device_list_buf)
6723                 dma_free_coherent(&pdev->dev,
6724                                   HOST_DEVICE_LIST_SZ,
6725                                   instance->host_device_list_buf,
6726                                   instance->host_device_list_buf_h);
6727
6728 }
6729
6730 /*
6731  * megasas_init_ctrl_params -           Initialize controller's instance
6732  *                                      parameters before FW init
6733  * @instance -                          Adapter soft instance
6734  * @return -                            void
6735  */
6736 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
6737 {
6738         instance->fw_crash_state = UNAVAILABLE;
6739
6740         megasas_poll_wait_aen = 0;
6741         instance->issuepend_done = 1;
6742         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
6743
6744         /*
6745          * Initialize locks and queues
6746          */
6747         INIT_LIST_HEAD(&instance->cmd_pool);
6748         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
6749
6750         atomic_set(&instance->fw_outstanding, 0);
6751
6752         init_waitqueue_head(&instance->int_cmd_wait_q);
6753         init_waitqueue_head(&instance->abort_cmd_wait_q);
6754
6755         spin_lock_init(&instance->crashdump_lock);
6756         spin_lock_init(&instance->mfi_pool_lock);
6757         spin_lock_init(&instance->hba_lock);
6758         spin_lock_init(&instance->stream_lock);
6759         spin_lock_init(&instance->completion_lock);
6760
6761         mutex_init(&instance->reset_mutex);
6762
6763         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
6764             (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
6765                 instance->flag_ieee = 1;
6766
6767         megasas_dbg_lvl = 0;
6768         instance->flag = 0;
6769         instance->unload = 1;
6770         instance->last_time = 0;
6771         instance->disableOnlineCtrlReset = 1;
6772         instance->UnevenSpanSupport = 0;
6773
6774         if (instance->adapter_type != MFI_SERIES)
6775                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
6776         else
6777                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
6778 }
6779
6780 /**
6781  * megasas_probe_one -  PCI hotplug entry point
6782  * @pdev:               PCI device structure
6783  * @id:                 PCI ids of supported hotplugged adapter
6784  */
6785 static int megasas_probe_one(struct pci_dev *pdev,
6786                              const struct pci_device_id *id)
6787 {
6788         int rval, pos;
6789         struct Scsi_Host *host;
6790         struct megasas_instance *instance;
6791         u16 control = 0;
6792
6793         switch (pdev->device) {
6794         case PCI_DEVICE_ID_LSI_AERO_10E1:
6795         case PCI_DEVICE_ID_LSI_AERO_10E5:
6796                 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
6797                 break;
6798         }
6799
6800         /* Reset MSI-X in the kdump kernel */
6801         if (reset_devices) {
6802                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
6803                 if (pos) {
6804                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
6805                                              &control);
6806                         if (control & PCI_MSIX_FLAGS_ENABLE) {
6807                                 dev_info(&pdev->dev, "resetting MSI-X\n");
6808                                 pci_write_config_word(pdev,
6809                                                       pos + PCI_MSIX_FLAGS,
6810                                                       control &
6811                                                       ~PCI_MSIX_FLAGS_ENABLE);
6812                         }
6813                 }
6814         }
6815
6816         /*
6817          * PCI prepping: enable device set bus mastering and dma mask
6818          */
6819         rval = pci_enable_device_mem(pdev);
6820
6821         if (rval) {
6822                 return rval;
6823         }
6824
6825         pci_set_master(pdev);
6826
6827         host = scsi_host_alloc(&megasas_template,
6828                                sizeof(struct megasas_instance));
6829
6830         if (!host) {
6831                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
6832                 goto fail_alloc_instance;
6833         }
6834
6835         instance = (struct megasas_instance *)host->hostdata;
6836         memset(instance, 0, sizeof(*instance));
6837         atomic_set(&instance->fw_reset_no_pci_access, 0);
6838
6839         /*
6840          * Initialize PCI related and misc parameters
6841          */
6842         instance->pdev = pdev;
6843         instance->host = host;
6844         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
6845         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
6846
6847         megasas_set_adapter_type(instance);
6848
6849         /*
6850          * Initialize MFI Firmware
6851          */
6852         if (megasas_init_fw(instance))
6853                 goto fail_init_mfi;
6854
6855         if (instance->requestorId) {
6856                 if (instance->PlasmaFW111) {
6857                         instance->vf_affiliation_111 =
6858                                 dma_alloc_coherent(&pdev->dev,
6859                                         sizeof(struct MR_LD_VF_AFFILIATION_111),
6860                                         &instance->vf_affiliation_111_h,
6861                                         GFP_KERNEL);
6862                         if (!instance->vf_affiliation_111)
6863                                 dev_warn(&pdev->dev, "Can't allocate "
6864                                        "memory for VF affiliation buffer\n");
6865                 } else {
6866                         instance->vf_affiliation =
6867                                 dma_alloc_coherent(&pdev->dev,
6868                                         (MAX_LOGICAL_DRIVES + 1) *
6869                                         sizeof(struct MR_LD_VF_AFFILIATION),
6870                                         &instance->vf_affiliation_h,
6871                                         GFP_KERNEL);
6872                         if (!instance->vf_affiliation)
6873                                 dev_warn(&pdev->dev, "Can't allocate "
6874                                        "memory for VF affiliation buffer\n");
6875                 }
6876         }
6877
6878         /*
6879          * Store instance in PCI softstate
6880          */
6881         pci_set_drvdata(pdev, instance);
6882
6883         /*
6884          * Add this controller to megasas_mgmt_info structure so that it
6885          * can be exported to management applications
6886          */
6887         megasas_mgmt_info.count++;
6888         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
6889         megasas_mgmt_info.max_index++;
6890
6891         /*
6892          * Register with SCSI mid-layer
6893          */
6894         if (megasas_io_attach(instance))
6895                 goto fail_io_attach;
6896
6897         instance->unload = 0;
6898         /*
6899          * Trigger SCSI to scan our drives
6900          */
6901         if (!instance->enable_fw_dev_list ||
6902             (instance->host_device_list_buf->count > 0))
6903                 scsi_scan_host(host);
6904
6905         /*
6906          * Initiate AEN (Asynchronous Event Notification)
6907          */
6908         if (megasas_start_aen(instance)) {
6909                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
6910                 goto fail_start_aen;
6911         }
6912
6913         /* Get current SR-IOV LD/VF affiliation */
6914         if (instance->requestorId)
6915                 megasas_get_ld_vf_affiliation(instance, 1);
6916
6917         return 0;
6918
6919 fail_start_aen:
6920 fail_io_attach:
6921         megasas_mgmt_info.count--;
6922         megasas_mgmt_info.max_index--;
6923         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
6924
6925         instance->instancet->disable_intr(instance);
6926         megasas_destroy_irqs(instance);
6927
6928         if (instance->adapter_type != MFI_SERIES)
6929                 megasas_release_fusion(instance);
6930         else
6931                 megasas_release_mfi(instance);
6932         if (instance->msix_vectors)
6933                 pci_free_irq_vectors(instance->pdev);
6934 fail_init_mfi:
6935         scsi_host_put(host);
6936 fail_alloc_instance:
6937         pci_disable_device(pdev);
6938
6939         return -ENODEV;
6940 }
6941
6942 /**
6943  * megasas_flush_cache -        Requests FW to flush all its caches
6944  * @instance:                   Adapter soft state
6945  */
6946 static void megasas_flush_cache(struct megasas_instance *instance)
6947 {
6948         struct megasas_cmd *cmd;
6949         struct megasas_dcmd_frame *dcmd;
6950
6951         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6952                 return;
6953
6954         cmd = megasas_get_cmd(instance);
6955
6956         if (!cmd)
6957                 return;
6958
6959         dcmd = &cmd->frame->dcmd;
6960
6961         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6962
6963         dcmd->cmd = MFI_CMD_DCMD;
6964         dcmd->cmd_status = 0x0;
6965         dcmd->sge_count = 0;
6966         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6967         dcmd->timeout = 0;
6968         dcmd->pad_0 = 0;
6969         dcmd->data_xfer_len = 0;
6970         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
6971         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
6972
6973         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6974                         != DCMD_SUCCESS) {
6975                 dev_err(&instance->pdev->dev,
6976                         "return from %s %d\n", __func__, __LINE__);
6977                 return;
6978         }
6979
6980         megasas_return_cmd(instance, cmd);
6981 }
6982
6983 /**
6984  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
6985  * @instance:                           Adapter soft state
6986  * @opcode:                             Shutdown/Hibernate
6987  */
6988 static void megasas_shutdown_controller(struct megasas_instance *instance,
6989                                         u32 opcode)
6990 {
6991         struct megasas_cmd *cmd;
6992         struct megasas_dcmd_frame *dcmd;
6993
6994         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6995                 return;
6996
6997         cmd = megasas_get_cmd(instance);
6998
6999         if (!cmd)
7000                 return;
7001
7002         if (instance->aen_cmd)
7003                 megasas_issue_blocked_abort_cmd(instance,
7004                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7005         if (instance->map_update_cmd)
7006                 megasas_issue_blocked_abort_cmd(instance,
7007                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7008         if (instance->jbod_seq_cmd)
7009                 megasas_issue_blocked_abort_cmd(instance,
7010                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7011
7012         dcmd = &cmd->frame->dcmd;
7013
7014         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7015
7016         dcmd->cmd = MFI_CMD_DCMD;
7017         dcmd->cmd_status = 0x0;
7018         dcmd->sge_count = 0;
7019         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7020         dcmd->timeout = 0;
7021         dcmd->pad_0 = 0;
7022         dcmd->data_xfer_len = 0;
7023         dcmd->opcode = cpu_to_le32(opcode);
7024
7025         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7026                         != DCMD_SUCCESS) {
7027                 dev_err(&instance->pdev->dev,
7028                         "return from %s %d\n", __func__, __LINE__);
7029                 return;
7030         }
7031
7032         megasas_return_cmd(instance, cmd);
7033 }
7034
7035 #ifdef CONFIG_PM
7036 /**
7037  * megasas_suspend -    driver suspend entry point
7038  * @pdev:               PCI device structure
7039  * @state:              PCI power state to suspend routine
7040  */
7041 static int
7042 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
7043 {
7044         struct Scsi_Host *host;
7045         struct megasas_instance *instance;
7046
7047         instance = pci_get_drvdata(pdev);
7048         host = instance->host;
7049         instance->unload = 1;
7050
7051         /* Shutdown SR-IOV heartbeat timer */
7052         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7053                 del_timer_sync(&instance->sriov_heartbeat_timer);
7054
7055         /* Stop the FW fault detection watchdog */
7056         if (instance->adapter_type != MFI_SERIES)
7057                 megasas_fusion_stop_watchdog(instance);
7058
7059         megasas_flush_cache(instance);
7060         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7061
7062         /* cancel the delayed work if this work still in queue */
7063         if (instance->ev != NULL) {
7064                 struct megasas_aen_event *ev = instance->ev;
7065                 cancel_delayed_work_sync(&ev->hotplug_work);
7066                 instance->ev = NULL;
7067         }
7068
7069         tasklet_kill(&instance->isr_tasklet);
7070
7071         pci_set_drvdata(instance->pdev, instance);
7072         instance->instancet->disable_intr(instance);
7073
7074         megasas_destroy_irqs(instance);
7075
7076         if (instance->msix_vectors)
7077                 pci_free_irq_vectors(instance->pdev);
7078
7079         pci_save_state(pdev);
7080         pci_disable_device(pdev);
7081
7082         pci_set_power_state(pdev, pci_choose_state(pdev, state));
7083
7084         return 0;
7085 }
7086
7087 /**
7088  * megasas_resume-      driver resume entry point
7089  * @pdev:               PCI device structure
7090  */
7091 static int
7092 megasas_resume(struct pci_dev *pdev)
7093 {
7094         int rval;
7095         struct Scsi_Host *host;
7096         struct megasas_instance *instance;
7097         int irq_flags = PCI_IRQ_LEGACY;
7098
7099         instance = pci_get_drvdata(pdev);
7100         host = instance->host;
7101         pci_set_power_state(pdev, PCI_D0);
7102         pci_enable_wake(pdev, PCI_D0, 0);
7103         pci_restore_state(pdev);
7104
7105         /*
7106          * PCI prepping: enable device set bus mastering and dma mask
7107          */
7108         rval = pci_enable_device_mem(pdev);
7109
7110         if (rval) {
7111                 dev_err(&pdev->dev, "Enable device failed\n");
7112                 return rval;
7113         }
7114
7115         pci_set_master(pdev);
7116
7117         /*
7118          * We expect the FW state to be READY
7119          */
7120         if (megasas_transition_to_ready(instance, 0))
7121                 goto fail_ready_state;
7122
7123         if (megasas_set_dma_mask(instance))
7124                 goto fail_set_dma_mask;
7125
7126         /*
7127          * Initialize MFI Firmware
7128          */
7129
7130         atomic_set(&instance->fw_outstanding, 0);
7131         atomic_set(&instance->ldio_outstanding, 0);
7132
7133         /* Now re-enable MSI-X */
7134         if (instance->msix_vectors) {
7135                 irq_flags = PCI_IRQ_MSIX;
7136                 if (smp_affinity_enable)
7137                         irq_flags |= PCI_IRQ_AFFINITY;
7138         }
7139         rval = pci_alloc_irq_vectors(instance->pdev, 1,
7140                                      instance->msix_vectors ?
7141                                      instance->msix_vectors : 1, irq_flags);
7142         if (rval < 0)
7143                 goto fail_reenable_msix;
7144
7145         megasas_setup_reply_map(instance);
7146
7147         if (instance->adapter_type != MFI_SERIES) {
7148                 megasas_reset_reply_desc(instance);
7149                 if (megasas_ioc_init_fusion(instance)) {
7150                         megasas_free_cmds(instance);
7151                         megasas_free_cmds_fusion(instance);
7152                         goto fail_init_mfi;
7153                 }
7154                 if (!megasas_get_map_info(instance))
7155                         megasas_sync_map_info(instance);
7156         } else {
7157                 *instance->producer = 0;
7158                 *instance->consumer = 0;
7159                 if (megasas_issue_init_mfi(instance))
7160                         goto fail_init_mfi;
7161         }
7162
7163         if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7164                 goto fail_init_mfi;
7165
7166         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7167                      (unsigned long)instance);
7168
7169         if (instance->msix_vectors ?
7170                         megasas_setup_irqs_msix(instance, 0) :
7171                         megasas_setup_irqs_ioapic(instance))
7172                 goto fail_init_mfi;
7173
7174         /* Re-launch SR-IOV heartbeat timer */
7175         if (instance->requestorId) {
7176                 if (!megasas_sriov_start_heartbeat(instance, 0))
7177                         megasas_start_timer(instance);
7178                 else {
7179                         instance->skip_heartbeat_timer_del = 1;
7180                         goto fail_init_mfi;
7181                 }
7182         }
7183
7184         instance->instancet->enable_intr(instance);
7185         megasas_setup_jbod_map(instance);
7186         instance->unload = 0;
7187
7188         /*
7189          * Initiate AEN (Asynchronous Event Notification)
7190          */
7191         if (megasas_start_aen(instance))
7192                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7193
7194         /* Re-launch FW fault watchdog */
7195         if (instance->adapter_type != MFI_SERIES)
7196                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7197                         goto fail_start_watchdog;
7198
7199         return 0;
7200
7201 fail_start_watchdog:
7202         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7203                 del_timer_sync(&instance->sriov_heartbeat_timer);
7204 fail_init_mfi:
7205         megasas_free_ctrl_dma_buffers(instance);
7206         megasas_free_ctrl_mem(instance);
7207         scsi_host_put(host);
7208
7209 fail_reenable_msix:
7210 fail_set_dma_mask:
7211 fail_ready_state:
7212
7213         pci_disable_device(pdev);
7214
7215         return -ENODEV;
7216 }
7217 #else
7218 #define megasas_suspend NULL
7219 #define megasas_resume  NULL
7220 #endif
7221
7222 static inline int
7223 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7224 {
7225         int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7226         int i;
7227         u8 adp_state;
7228
7229         for (i = 0; i < wait_time; i++) {
7230                 adp_state = atomic_read(&instance->adprecovery);
7231                 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7232                     (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7233                         break;
7234
7235                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7236                         dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7237
7238                 msleep(1000);
7239         }
7240
7241         if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7242                 dev_info(&instance->pdev->dev,
7243                          "%s HBA failed to become operational, adp_state %d\n",
7244                          __func__, adp_state);
7245                 return 1;
7246         }
7247
7248         return 0;
7249 }
7250
7251 /**
7252  * megasas_detach_one - PCI hot"un"plug entry point
7253  * @pdev:               PCI device structure
7254  */
7255 static void megasas_detach_one(struct pci_dev *pdev)
7256 {
7257         int i;
7258         struct Scsi_Host *host;
7259         struct megasas_instance *instance;
7260         struct fusion_context *fusion;
7261         u32 pd_seq_map_sz;
7262
7263         instance = pci_get_drvdata(pdev);
7264         host = instance->host;
7265         fusion = instance->ctrl_context;
7266
7267         /* Shutdown SR-IOV heartbeat timer */
7268         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7269                 del_timer_sync(&instance->sriov_heartbeat_timer);
7270
7271         /* Stop the FW fault detection watchdog */
7272         if (instance->adapter_type != MFI_SERIES)
7273                 megasas_fusion_stop_watchdog(instance);
7274
7275         if (instance->fw_crash_state != UNAVAILABLE)
7276                 megasas_free_host_crash_buffer(instance);
7277         scsi_remove_host(instance->host);
7278         instance->unload = 1;
7279
7280         if (megasas_wait_for_adapter_operational(instance))
7281                 goto skip_firing_dcmds;
7282
7283         megasas_flush_cache(instance);
7284         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7285
7286 skip_firing_dcmds:
7287         /* cancel the delayed work if this work still in queue*/
7288         if (instance->ev != NULL) {
7289                 struct megasas_aen_event *ev = instance->ev;
7290                 cancel_delayed_work_sync(&ev->hotplug_work);
7291                 instance->ev = NULL;
7292         }
7293
7294         /* cancel all wait events */
7295         wake_up_all(&instance->int_cmd_wait_q);
7296
7297         tasklet_kill(&instance->isr_tasklet);
7298
7299         /*
7300          * Take the instance off the instance array. Note that we will not
7301          * decrement the max_index. We let this array be sparse array
7302          */
7303         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7304                 if (megasas_mgmt_info.instance[i] == instance) {
7305                         megasas_mgmt_info.count--;
7306                         megasas_mgmt_info.instance[i] = NULL;
7307
7308                         break;
7309                 }
7310         }
7311
7312         instance->instancet->disable_intr(instance);
7313
7314         megasas_destroy_irqs(instance);
7315
7316         if (instance->msix_vectors)
7317                 pci_free_irq_vectors(instance->pdev);
7318
7319         if (instance->adapter_type >= VENTURA_SERIES) {
7320                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7321                         kfree(fusion->stream_detect_by_ld[i]);
7322                 kfree(fusion->stream_detect_by_ld);
7323                 fusion->stream_detect_by_ld = NULL;
7324         }
7325
7326
7327         if (instance->adapter_type != MFI_SERIES) {
7328                 megasas_release_fusion(instance);
7329                         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
7330                                 (sizeof(struct MR_PD_CFG_SEQ) *
7331                                         (MAX_PHYSICAL_DEVICES - 1));
7332                 for (i = 0; i < 2 ; i++) {
7333                         if (fusion->ld_map[i])
7334                                 dma_free_coherent(&instance->pdev->dev,
7335                                                   fusion->max_map_sz,
7336                                                   fusion->ld_map[i],
7337                                                   fusion->ld_map_phys[i]);
7338                         if (fusion->ld_drv_map[i]) {
7339                                 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
7340                                         vfree(fusion->ld_drv_map[i]);
7341                                 else
7342                                         free_pages((ulong)fusion->ld_drv_map[i],
7343                                                    fusion->drv_map_pages);
7344                         }
7345
7346                         if (fusion->pd_seq_sync[i])
7347                                 dma_free_coherent(&instance->pdev->dev,
7348                                         pd_seq_map_sz,
7349                                         fusion->pd_seq_sync[i],
7350                                         fusion->pd_seq_phys[i]);
7351                 }
7352         } else {
7353                 megasas_release_mfi(instance);
7354         }
7355
7356         if (instance->vf_affiliation)
7357                 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
7358                                     sizeof(struct MR_LD_VF_AFFILIATION),
7359                                     instance->vf_affiliation,
7360                                     instance->vf_affiliation_h);
7361
7362         if (instance->vf_affiliation_111)
7363                 dma_free_coherent(&pdev->dev,
7364                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
7365                                     instance->vf_affiliation_111,
7366                                     instance->vf_affiliation_111_h);
7367
7368         if (instance->hb_host_mem)
7369                 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7370                                     instance->hb_host_mem,
7371                                     instance->hb_host_mem_h);
7372
7373         megasas_free_ctrl_dma_buffers(instance);
7374
7375         megasas_free_ctrl_mem(instance);
7376
7377         scsi_host_put(host);
7378
7379         pci_disable_device(pdev);
7380 }
7381
7382 /**
7383  * megasas_shutdown -   Shutdown entry point
7384  * @device:             Generic device structure
7385  */
7386 static void megasas_shutdown(struct pci_dev *pdev)
7387 {
7388         struct megasas_instance *instance = pci_get_drvdata(pdev);
7389
7390         instance->unload = 1;
7391
7392         if (megasas_wait_for_adapter_operational(instance))
7393                 goto skip_firing_dcmds;
7394
7395         megasas_flush_cache(instance);
7396         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7397
7398 skip_firing_dcmds:
7399         instance->instancet->disable_intr(instance);
7400         megasas_destroy_irqs(instance);
7401
7402         if (instance->msix_vectors)
7403                 pci_free_irq_vectors(instance->pdev);
7404 }
7405
7406 /**
7407  * megasas_mgmt_open -  char node "open" entry point
7408  */
7409 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7410 {
7411         /*
7412          * Allow only those users with admin rights
7413          */
7414         if (!capable(CAP_SYS_ADMIN))
7415                 return -EACCES;
7416
7417         return 0;
7418 }
7419
7420 /**
7421  * megasas_mgmt_fasync -        Async notifier registration from applications
7422  *
7423  * This function adds the calling process to a driver global queue. When an
7424  * event occurs, SIGIO will be sent to all processes in this queue.
7425  */
7426 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
7427 {
7428         int rc;
7429
7430         mutex_lock(&megasas_async_queue_mutex);
7431
7432         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
7433
7434         mutex_unlock(&megasas_async_queue_mutex);
7435
7436         if (rc >= 0) {
7437                 /* For sanity check when we get ioctl */
7438                 filep->private_data = filep;
7439                 return 0;
7440         }
7441
7442         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
7443
7444         return rc;
7445 }
7446
7447 /**
7448  * megasas_mgmt_poll -  char node "poll" entry point
7449  * */
7450 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
7451 {
7452         __poll_t mask;
7453         unsigned long flags;
7454
7455         poll_wait(file, &megasas_poll_wait, wait);
7456         spin_lock_irqsave(&poll_aen_lock, flags);
7457         if (megasas_poll_wait_aen)
7458                 mask = (EPOLLIN | EPOLLRDNORM);
7459         else
7460                 mask = 0;
7461         megasas_poll_wait_aen = 0;
7462         spin_unlock_irqrestore(&poll_aen_lock, flags);
7463         return mask;
7464 }
7465
7466 /*
7467  * megasas_set_crash_dump_params_ioctl:
7468  *              Send CRASH_DUMP_MODE DCMD to all controllers
7469  * @cmd:        MFI command frame
7470  */
7471
7472 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
7473 {
7474         struct megasas_instance *local_instance;
7475         int i, error = 0;
7476         int crash_support;
7477
7478         crash_support = cmd->frame->dcmd.mbox.w[0];
7479
7480         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7481                 local_instance = megasas_mgmt_info.instance[i];
7482                 if (local_instance && local_instance->crash_dump_drv_support) {
7483                         if ((atomic_read(&local_instance->adprecovery) ==
7484                                 MEGASAS_HBA_OPERATIONAL) &&
7485                                 !megasas_set_crash_dump_params(local_instance,
7486                                         crash_support)) {
7487                                 local_instance->crash_dump_app_support =
7488                                         crash_support;
7489                                 dev_info(&local_instance->pdev->dev,
7490                                         "Application firmware crash "
7491                                         "dump mode set success\n");
7492                                 error = 0;
7493                         } else {
7494                                 dev_info(&local_instance->pdev->dev,
7495                                         "Application firmware crash "
7496                                         "dump mode set failed\n");
7497                                 error = -1;
7498                         }
7499                 }
7500         }
7501         return error;
7502 }
7503
7504 /**
7505  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
7506  * @instance:                   Adapter soft state
7507  * @argp:                       User's ioctl packet
7508  */
7509 static int
7510 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
7511                       struct megasas_iocpacket __user * user_ioc,
7512                       struct megasas_iocpacket *ioc)
7513 {
7514         struct megasas_sge64 *kern_sge64 = NULL;
7515         struct megasas_sge32 *kern_sge32 = NULL;
7516         struct megasas_cmd *cmd;
7517         void *kbuff_arr[MAX_IOCTL_SGE];
7518         dma_addr_t buf_handle = 0;
7519         int error = 0, i;
7520         void *sense = NULL;
7521         dma_addr_t sense_handle;
7522         unsigned long *sense_ptr;
7523         u32 opcode = 0;
7524
7525         memset(kbuff_arr, 0, sizeof(kbuff_arr));
7526
7527         if (ioc->sge_count > MAX_IOCTL_SGE) {
7528                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
7529                        ioc->sge_count, MAX_IOCTL_SGE);
7530                 return -EINVAL;
7531         }
7532
7533         if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
7534             ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
7535             !instance->support_nvme_passthru)) {
7536                 dev_err(&instance->pdev->dev,
7537                         "Received invalid ioctl command 0x%x\n",
7538                         ioc->frame.hdr.cmd);
7539                 return -ENOTSUPP;
7540         }
7541
7542         cmd = megasas_get_cmd(instance);
7543         if (!cmd) {
7544                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
7545                 return -ENOMEM;
7546         }
7547
7548         /*
7549          * User's IOCTL packet has 2 frames (maximum). Copy those two
7550          * frames into our cmd's frames. cmd->frame's context will get
7551          * overwritten when we copy from user's frames. So set that value
7552          * alone separately
7553          */
7554         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
7555         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
7556         cmd->frame->hdr.pad_0 = 0;
7557
7558         cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
7559
7560         if (instance->consistent_mask_64bit)
7561                 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
7562                                        MFI_FRAME_SENSE64));
7563         else
7564                 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
7565                                                MFI_FRAME_SENSE64));
7566
7567         if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
7568                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
7569
7570         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
7571                 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
7572                         megasas_return_cmd(instance, cmd);
7573                         return -1;
7574                 }
7575         }
7576
7577         if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
7578                 error = megasas_set_crash_dump_params_ioctl(cmd);
7579                 megasas_return_cmd(instance, cmd);
7580                 return error;
7581         }
7582
7583         /*
7584          * The management interface between applications and the fw uses
7585          * MFI frames. E.g, RAID configuration changes, LD property changes
7586          * etc are accomplishes through different kinds of MFI frames. The
7587          * driver needs to care only about substituting user buffers with
7588          * kernel buffers in SGLs. The location of SGL is embedded in the
7589          * struct iocpacket itself.
7590          */
7591         if (instance->consistent_mask_64bit)
7592                 kern_sge64 = (struct megasas_sge64 *)
7593                         ((unsigned long)cmd->frame + ioc->sgl_off);
7594         else
7595                 kern_sge32 = (struct megasas_sge32 *)
7596                         ((unsigned long)cmd->frame + ioc->sgl_off);
7597
7598         /*
7599          * For each user buffer, create a mirror buffer and copy in
7600          */
7601         for (i = 0; i < ioc->sge_count; i++) {
7602                 if (!ioc->sgl[i].iov_len)
7603                         continue;
7604
7605                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
7606                                                     ioc->sgl[i].iov_len,
7607                                                     &buf_handle, GFP_KERNEL);
7608                 if (!kbuff_arr[i]) {
7609                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
7610                                "kernel SGL buffer for IOCTL\n");
7611                         error = -ENOMEM;
7612                         goto out;
7613                 }
7614
7615                 /*
7616                  * We don't change the dma_coherent_mask, so
7617                  * dma_alloc_coherent only returns 32bit addresses
7618                  */
7619                 if (instance->consistent_mask_64bit) {
7620                         kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
7621                         kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
7622                 } else {
7623                         kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
7624                         kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
7625                 }
7626
7627                 /*
7628                  * We created a kernel buffer corresponding to the
7629                  * user buffer. Now copy in from the user buffer
7630                  */
7631                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
7632                                    (u32) (ioc->sgl[i].iov_len))) {
7633                         error = -EFAULT;
7634                         goto out;
7635                 }
7636         }
7637
7638         if (ioc->sense_len) {
7639                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
7640                                              &sense_handle, GFP_KERNEL);
7641                 if (!sense) {
7642                         error = -ENOMEM;
7643                         goto out;
7644                 }
7645
7646                 sense_ptr =
7647                 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
7648                 if (instance->consistent_mask_64bit)
7649                         *sense_ptr = cpu_to_le64(sense_handle);
7650                 else
7651                         *sense_ptr = cpu_to_le32(sense_handle);
7652         }
7653
7654         /*
7655          * Set the sync_cmd flag so that the ISR knows not to complete this
7656          * cmd to the SCSI mid-layer
7657          */
7658         cmd->sync_cmd = 1;
7659         if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
7660                 cmd->sync_cmd = 0;
7661                 dev_err(&instance->pdev->dev,
7662                         "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
7663                         __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
7664                         cmd->cmd_status_drv);
7665                 return -EBUSY;
7666         }
7667
7668         cmd->sync_cmd = 0;
7669
7670         if (instance->unload == 1) {
7671                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
7672                         "don't submit data to application\n");
7673                 goto out;
7674         }
7675         /*
7676          * copy out the kernel buffers to user buffers
7677          */
7678         for (i = 0; i < ioc->sge_count; i++) {
7679                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
7680                                  ioc->sgl[i].iov_len)) {
7681                         error = -EFAULT;
7682                         goto out;
7683                 }
7684         }
7685
7686         /*
7687          * copy out the sense
7688          */
7689         if (ioc->sense_len) {
7690                 /*
7691                  * sense_ptr points to the location that has the user
7692                  * sense buffer address
7693                  */
7694                 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
7695                                 ioc->sense_off);
7696
7697                 if (copy_to_user((void __user *)((unsigned long)
7698                                  get_unaligned((unsigned long *)sense_ptr)),
7699                                  sense, ioc->sense_len)) {
7700                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
7701                                         "sense data\n");
7702                         error = -EFAULT;
7703                         goto out;
7704                 }
7705         }
7706
7707         /*
7708          * copy the status codes returned by the fw
7709          */
7710         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
7711                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
7712                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
7713                 error = -EFAULT;
7714         }
7715
7716 out:
7717         if (sense) {
7718                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
7719                                     sense, sense_handle);
7720         }
7721
7722         for (i = 0; i < ioc->sge_count; i++) {
7723                 if (kbuff_arr[i]) {
7724                         if (instance->consistent_mask_64bit)
7725                                 dma_free_coherent(&instance->pdev->dev,
7726                                         le32_to_cpu(kern_sge64[i].length),
7727                                         kbuff_arr[i],
7728                                         le64_to_cpu(kern_sge64[i].phys_addr));
7729                         else
7730                                 dma_free_coherent(&instance->pdev->dev,
7731                                         le32_to_cpu(kern_sge32[i].length),
7732                                         kbuff_arr[i],
7733                                         le32_to_cpu(kern_sge32[i].phys_addr));
7734                         kbuff_arr[i] = NULL;
7735                 }
7736         }
7737
7738         megasas_return_cmd(instance, cmd);
7739         return error;
7740 }
7741
7742 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
7743 {
7744         struct megasas_iocpacket __user *user_ioc =
7745             (struct megasas_iocpacket __user *)arg;
7746         struct megasas_iocpacket *ioc;
7747         struct megasas_instance *instance;
7748         int error;
7749
7750         ioc = memdup_user(user_ioc, sizeof(*ioc));
7751         if (IS_ERR(ioc))
7752                 return PTR_ERR(ioc);
7753
7754         instance = megasas_lookup_instance(ioc->host_no);
7755         if (!instance) {
7756                 error = -ENODEV;
7757                 goto out_kfree_ioc;
7758         }
7759
7760         /* Block ioctls in VF mode */
7761         if (instance->requestorId && !allow_vf_ioctls) {
7762                 error = -ENODEV;
7763                 goto out_kfree_ioc;
7764         }
7765
7766         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
7767                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
7768                 error = -ENODEV;
7769                 goto out_kfree_ioc;
7770         }
7771
7772         if (instance->unload == 1) {
7773                 error = -ENODEV;
7774                 goto out_kfree_ioc;
7775         }
7776
7777         if (down_interruptible(&instance->ioctl_sem)) {
7778                 error = -ERESTARTSYS;
7779                 goto out_kfree_ioc;
7780         }
7781
7782         if  (megasas_wait_for_adapter_operational(instance)) {
7783                 error = -ENODEV;
7784                 goto out_up;
7785         }
7786
7787         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
7788 out_up:
7789         up(&instance->ioctl_sem);
7790
7791 out_kfree_ioc:
7792         kfree(ioc);
7793         return error;
7794 }
7795
7796 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
7797 {
7798         struct megasas_instance *instance;
7799         struct megasas_aen aen;
7800         int error;
7801
7802         if (file->private_data != file) {
7803                 printk(KERN_DEBUG "megasas: fasync_helper was not "
7804                        "called first\n");
7805                 return -EINVAL;
7806         }
7807
7808         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
7809                 return -EFAULT;
7810
7811         instance = megasas_lookup_instance(aen.host_no);
7812
7813         if (!instance)
7814                 return -ENODEV;
7815
7816         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
7817                 return -ENODEV;
7818         }
7819
7820         if (instance->unload == 1) {
7821                 return -ENODEV;
7822         }
7823
7824         if  (megasas_wait_for_adapter_operational(instance))
7825                 return -ENODEV;
7826
7827         mutex_lock(&instance->reset_mutex);
7828         error = megasas_register_aen(instance, aen.seq_num,
7829                                      aen.class_locale_word);
7830         mutex_unlock(&instance->reset_mutex);
7831         return error;
7832 }
7833
7834 /**
7835  * megasas_mgmt_ioctl - char node ioctl entry point
7836  */
7837 static long
7838 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
7839 {
7840         switch (cmd) {
7841         case MEGASAS_IOC_FIRMWARE:
7842                 return megasas_mgmt_ioctl_fw(file, arg);
7843
7844         case MEGASAS_IOC_GET_AEN:
7845                 return megasas_mgmt_ioctl_aen(file, arg);
7846         }
7847
7848         return -ENOTTY;
7849 }
7850
7851 #ifdef CONFIG_COMPAT
7852 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
7853 {
7854         struct compat_megasas_iocpacket __user *cioc =
7855             (struct compat_megasas_iocpacket __user *)arg;
7856         struct megasas_iocpacket __user *ioc =
7857             compat_alloc_user_space(sizeof(struct megasas_iocpacket));
7858         int i;
7859         int error = 0;
7860         compat_uptr_t ptr;
7861         u32 local_sense_off;
7862         u32 local_sense_len;
7863         u32 user_sense_off;
7864
7865         if (clear_user(ioc, sizeof(*ioc)))
7866                 return -EFAULT;
7867
7868         if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
7869             copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
7870             copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
7871             copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
7872             copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
7873             copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
7874                 return -EFAULT;
7875
7876         /*
7877          * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
7878          * sense_len is not null, so prepare the 64bit value under
7879          * the same condition.
7880          */
7881         if (get_user(local_sense_off, &ioc->sense_off) ||
7882                 get_user(local_sense_len, &ioc->sense_len) ||
7883                 get_user(user_sense_off, &cioc->sense_off))
7884                 return -EFAULT;
7885
7886         if (local_sense_off != user_sense_off)
7887                 return -EINVAL;
7888
7889         if (local_sense_len) {
7890                 void __user **sense_ioc_ptr =
7891                         (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
7892                 compat_uptr_t *sense_cioc_ptr =
7893                         (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
7894                 if (get_user(ptr, sense_cioc_ptr) ||
7895                     put_user(compat_ptr(ptr), sense_ioc_ptr))
7896                         return -EFAULT;
7897         }
7898
7899         for (i = 0; i < MAX_IOCTL_SGE; i++) {
7900                 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
7901                     put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
7902                     copy_in_user(&ioc->sgl[i].iov_len,
7903                                  &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
7904                         return -EFAULT;
7905         }
7906
7907         error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
7908
7909         if (copy_in_user(&cioc->frame.hdr.cmd_status,
7910                          &ioc->frame.hdr.cmd_status, sizeof(u8))) {
7911                 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
7912                 return -EFAULT;
7913         }
7914         return error;
7915 }
7916
7917 static long
7918 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
7919                           unsigned long arg)
7920 {
7921         switch (cmd) {
7922         case MEGASAS_IOC_FIRMWARE32:
7923                 return megasas_mgmt_compat_ioctl_fw(file, arg);
7924         case MEGASAS_IOC_GET_AEN:
7925                 return megasas_mgmt_ioctl_aen(file, arg);
7926         }
7927
7928         return -ENOTTY;
7929 }
7930 #endif
7931
7932 /*
7933  * File operations structure for management interface
7934  */
7935 static const struct file_operations megasas_mgmt_fops = {
7936         .owner = THIS_MODULE,
7937         .open = megasas_mgmt_open,
7938         .fasync = megasas_mgmt_fasync,
7939         .unlocked_ioctl = megasas_mgmt_ioctl,
7940         .poll = megasas_mgmt_poll,
7941 #ifdef CONFIG_COMPAT
7942         .compat_ioctl = megasas_mgmt_compat_ioctl,
7943 #endif
7944         .llseek = noop_llseek,
7945 };
7946
7947 /*
7948  * PCI hotplug support registration structure
7949  */
7950 static struct pci_driver megasas_pci_driver = {
7951
7952         .name = "megaraid_sas",
7953         .id_table = megasas_pci_table,
7954         .probe = megasas_probe_one,
7955         .remove = megasas_detach_one,
7956         .suspend = megasas_suspend,
7957         .resume = megasas_resume,
7958         .shutdown = megasas_shutdown,
7959 };
7960
7961 /*
7962  * Sysfs driver attributes
7963  */
7964 static ssize_t version_show(struct device_driver *dd, char *buf)
7965 {
7966         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
7967                         MEGASAS_VERSION);
7968 }
7969 static DRIVER_ATTR_RO(version);
7970
7971 static ssize_t release_date_show(struct device_driver *dd, char *buf)
7972 {
7973         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
7974                 MEGASAS_RELDATE);
7975 }
7976 static DRIVER_ATTR_RO(release_date);
7977
7978 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
7979 {
7980         return sprintf(buf, "%u\n", support_poll_for_event);
7981 }
7982 static DRIVER_ATTR_RO(support_poll_for_event);
7983
7984 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
7985 {
7986         return sprintf(buf, "%u\n", support_device_change);
7987 }
7988 static DRIVER_ATTR_RO(support_device_change);
7989
7990 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
7991 {
7992         return sprintf(buf, "%u\n", megasas_dbg_lvl);
7993 }
7994
7995 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
7996                              size_t count)
7997 {
7998         int retval = count;
7999
8000         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8001                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8002                 retval = -EINVAL;
8003         }
8004         return retval;
8005 }
8006 static DRIVER_ATTR_RW(dbg_lvl);
8007
8008 static ssize_t
8009 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8010 {
8011         return sprintf(buf, "%u\n", support_nvme_encapsulation);
8012 }
8013
8014 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8015
8016 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8017 {
8018         sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8019         scsi_remove_device(sdev);
8020         scsi_device_put(sdev);
8021 }
8022
8023 /**
8024  * megasas_update_device_list - Update the PD and LD device list from FW
8025  *                              after an AEN event notification
8026  * @instance:                   Adapter soft state
8027  * @event_type:                 Indicates type of event (PD or LD event)
8028  *
8029  * @return:                     Success or failure
8030  *
8031  * Issue DCMDs to Firmware to update the internal device list in driver.
8032  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8033  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8034  */
8035 static
8036 int megasas_update_device_list(struct megasas_instance *instance,
8037                                int event_type)
8038 {
8039         int dcmd_ret = DCMD_SUCCESS;
8040
8041         if (instance->enable_fw_dev_list) {
8042                 dcmd_ret = megasas_host_device_list_query(instance, false);
8043                 if (dcmd_ret != DCMD_SUCCESS)
8044                         goto out;
8045         } else {
8046                 if (event_type & SCAN_PD_CHANNEL) {
8047                         dcmd_ret = megasas_get_pd_list(instance);
8048
8049                         if (dcmd_ret != DCMD_SUCCESS)
8050                                 goto out;
8051                 }
8052
8053                 if (event_type & SCAN_VD_CHANNEL) {
8054                         if (!instance->requestorId ||
8055                             (instance->requestorId &&
8056                              megasas_get_ld_vf_affiliation(instance, 0))) {
8057                                 dcmd_ret = megasas_ld_list_query(instance,
8058                                                 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8059                                 if (dcmd_ret != DCMD_SUCCESS)
8060                                         goto out;
8061                         }
8062                 }
8063         }
8064
8065 out:
8066         return dcmd_ret;
8067 }
8068
8069 /**
8070  * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8071  *                              after an AEN event notification
8072  * @instance:                   Adapter soft state
8073  * @scan_type:                  Indicates type of devices (PD/LD) to add
8074  * @return                      void
8075  */
8076 static
8077 void megasas_add_remove_devices(struct megasas_instance *instance,
8078                                 int scan_type)
8079 {
8080         int i, j;
8081         u16 pd_index = 0;
8082         u16 ld_index = 0;
8083         u16 channel = 0, id = 0;
8084         struct Scsi_Host *host;
8085         struct scsi_device *sdev1;
8086         struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8087         struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8088
8089         host = instance->host;
8090
8091         if (instance->enable_fw_dev_list) {
8092                 targetid_list = instance->host_device_list_buf;
8093                 for (i = 0; i < targetid_list->count; i++) {
8094                         targetid_entry = &targetid_list->host_device_list[i];
8095                         if (targetid_entry->flags.u.bits.is_sys_pd) {
8096                                 channel = le16_to_cpu(targetid_entry->target_id) /
8097                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8098                                 id = le16_to_cpu(targetid_entry->target_id) %
8099                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8100                         } else {
8101                                 channel = MEGASAS_MAX_PD_CHANNELS +
8102                                           (le16_to_cpu(targetid_entry->target_id) /
8103                                            MEGASAS_MAX_DEV_PER_CHANNEL);
8104                                 id = le16_to_cpu(targetid_entry->target_id) %
8105                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8106                         }
8107                         sdev1 = scsi_device_lookup(host, channel, id, 0);
8108                         if (!sdev1) {
8109                                 scsi_add_device(host, channel, id, 0);
8110                         } else {
8111                                 scsi_device_put(sdev1);
8112                         }
8113                 }
8114         }
8115
8116         if (scan_type & SCAN_PD_CHANNEL) {
8117                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8118                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8119                                 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8120                                 sdev1 = scsi_device_lookup(host, i, j, 0);
8121                                 if (instance->pd_list[pd_index].driveState ==
8122                                                         MR_PD_STATE_SYSTEM) {
8123                                         if (!sdev1)
8124                                                 scsi_add_device(host, i, j, 0);
8125                                         else
8126                                                 scsi_device_put(sdev1);
8127                                 } else {
8128                                         if (sdev1)
8129                                                 megasas_remove_scsi_device(sdev1);
8130                                 }
8131                         }
8132                 }
8133         }
8134
8135         if (scan_type & SCAN_VD_CHANNEL) {
8136                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8137                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8138                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8139                                 sdev1 = scsi_device_lookup(host,
8140                                                 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8141                                 if (instance->ld_ids[ld_index] != 0xff) {
8142                                         if (!sdev1)
8143                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8144                                         else
8145                                                 scsi_device_put(sdev1);
8146                                 } else {
8147                                         if (sdev1)
8148                                                 megasas_remove_scsi_device(sdev1);
8149                                 }
8150                         }
8151                 }
8152         }
8153
8154 }
8155
8156 static void
8157 megasas_aen_polling(struct work_struct *work)
8158 {
8159         struct megasas_aen_event *ev =
8160                 container_of(work, struct megasas_aen_event, hotplug_work.work);
8161         struct megasas_instance *instance = ev->instance;
8162         union megasas_evt_class_locale class_locale;
8163         int event_type = 0;
8164         u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
8165         int error;
8166         u8  dcmd_ret = DCMD_SUCCESS;
8167
8168         if (!instance) {
8169                 printk(KERN_ERR "invalid instance!\n");
8170                 kfree(ev);
8171                 return;
8172         }
8173
8174         /* Adjust event workqueue thread wait time for VF mode */
8175         if (instance->requestorId)
8176                 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
8177
8178         /* Don't run the event workqueue thread if OCR is running */
8179         mutex_lock(&instance->reset_mutex);
8180
8181         instance->ev = NULL;
8182         if (instance->evt_detail) {
8183                 megasas_decode_evt(instance);
8184
8185                 switch (le32_to_cpu(instance->evt_detail->code)) {
8186
8187                 case MR_EVT_PD_INSERTED:
8188                 case MR_EVT_PD_REMOVED:
8189                         event_type = SCAN_PD_CHANNEL;
8190                         break;
8191
8192                 case MR_EVT_LD_OFFLINE:
8193                 case MR_EVT_CFG_CLEARED:
8194                 case MR_EVT_LD_DELETED:
8195                 case MR_EVT_LD_CREATED:
8196                         event_type = SCAN_VD_CHANNEL;
8197                         break;
8198
8199                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8200                 case MR_EVT_FOREIGN_CFG_IMPORTED:
8201                 case MR_EVT_LD_STATE_CHANGE:
8202                         event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8203                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8204                                 instance->host->host_no);
8205                         break;
8206
8207                 case MR_EVT_CTRL_PROP_CHANGED:
8208                         dcmd_ret = megasas_get_ctrl_info(instance);
8209                         if (dcmd_ret == DCMD_SUCCESS &&
8210                             instance->snapdump_wait_time) {
8211                                 megasas_get_snapdump_properties(instance);
8212                                 dev_info(&instance->pdev->dev,
8213                                          "Snap dump wait time\t: %d\n",
8214                                          instance->snapdump_wait_time);
8215                         }
8216                         break;
8217                 default:
8218                         event_type = 0;
8219                         break;
8220                 }
8221         } else {
8222                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8223                 mutex_unlock(&instance->reset_mutex);
8224                 kfree(ev);
8225                 return;
8226         }
8227
8228         if (event_type)
8229                 dcmd_ret = megasas_update_device_list(instance, event_type);
8230
8231         mutex_unlock(&instance->reset_mutex);
8232
8233         if (event_type && dcmd_ret == DCMD_SUCCESS)
8234                 megasas_add_remove_devices(instance, event_type);
8235
8236         if (dcmd_ret == DCMD_SUCCESS)
8237                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8238         else
8239                 seq_num = instance->last_seq_num;
8240
8241         /* Register AEN with FW for latest sequence number plus 1 */
8242         class_locale.members.reserved = 0;
8243         class_locale.members.locale = MR_EVT_LOCALE_ALL;
8244         class_locale.members.class = MR_EVT_CLASS_DEBUG;
8245
8246         if (instance->aen_cmd != NULL) {
8247                 kfree(ev);
8248                 return;
8249         }
8250
8251         mutex_lock(&instance->reset_mutex);
8252         error = megasas_register_aen(instance, seq_num,
8253                                         class_locale.word);
8254         if (error)
8255                 dev_err(&instance->pdev->dev,
8256                         "register aen failed error %x\n", error);
8257
8258         mutex_unlock(&instance->reset_mutex);
8259         kfree(ev);
8260 }
8261
8262 /**
8263  * megasas_init - Driver load entry point
8264  */
8265 static int __init megasas_init(void)
8266 {
8267         int rval;
8268
8269         /*
8270          * Booted in kdump kernel, minimize memory footprints by
8271          * disabling few features
8272          */
8273         if (reset_devices) {
8274                 msix_vectors = 1;
8275                 rdpq_enable = 0;
8276                 dual_qdepth_disable = 1;
8277         }
8278
8279         /*
8280          * Announce driver version and other information
8281          */
8282         pr_info("megasas: %s\n", MEGASAS_VERSION);
8283
8284         spin_lock_init(&poll_aen_lock);
8285
8286         support_poll_for_event = 2;
8287         support_device_change = 1;
8288         support_nvme_encapsulation = true;
8289
8290         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
8291
8292         /*
8293          * Register character device node
8294          */
8295         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
8296
8297         if (rval < 0) {
8298                 printk(KERN_DEBUG "megasas: failed to open device node\n");
8299                 return rval;
8300         }
8301
8302         megasas_mgmt_majorno = rval;
8303
8304         /*
8305          * Register ourselves as PCI hotplug module
8306          */
8307         rval = pci_register_driver(&megasas_pci_driver);
8308
8309         if (rval) {
8310                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
8311                 goto err_pcidrv;
8312         }
8313
8314         rval = driver_create_file(&megasas_pci_driver.driver,
8315                                   &driver_attr_version);
8316         if (rval)
8317                 goto err_dcf_attr_ver;
8318
8319         rval = driver_create_file(&megasas_pci_driver.driver,
8320                                   &driver_attr_release_date);
8321         if (rval)
8322                 goto err_dcf_rel_date;
8323
8324         rval = driver_create_file(&megasas_pci_driver.driver,
8325                                 &driver_attr_support_poll_for_event);
8326         if (rval)
8327                 goto err_dcf_support_poll_for_event;
8328
8329         rval = driver_create_file(&megasas_pci_driver.driver,
8330                                   &driver_attr_dbg_lvl);
8331         if (rval)
8332                 goto err_dcf_dbg_lvl;
8333         rval = driver_create_file(&megasas_pci_driver.driver,
8334                                 &driver_attr_support_device_change);
8335         if (rval)
8336                 goto err_dcf_support_device_change;
8337
8338         rval = driver_create_file(&megasas_pci_driver.driver,
8339                                   &driver_attr_support_nvme_encapsulation);
8340         if (rval)
8341                 goto err_dcf_support_nvme_encapsulation;
8342
8343         return rval;
8344
8345 err_dcf_support_nvme_encapsulation:
8346         driver_remove_file(&megasas_pci_driver.driver,
8347                            &driver_attr_support_device_change);
8348
8349 err_dcf_support_device_change:
8350         driver_remove_file(&megasas_pci_driver.driver,
8351                            &driver_attr_dbg_lvl);
8352 err_dcf_dbg_lvl:
8353         driver_remove_file(&megasas_pci_driver.driver,
8354                         &driver_attr_support_poll_for_event);
8355 err_dcf_support_poll_for_event:
8356         driver_remove_file(&megasas_pci_driver.driver,
8357                            &driver_attr_release_date);
8358 err_dcf_rel_date:
8359         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8360 err_dcf_attr_ver:
8361         pci_unregister_driver(&megasas_pci_driver);
8362 err_pcidrv:
8363         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8364         return rval;
8365 }
8366
8367 /**
8368  * megasas_exit - Driver unload entry point
8369  */
8370 static void __exit megasas_exit(void)
8371 {
8372         driver_remove_file(&megasas_pci_driver.driver,
8373                            &driver_attr_dbg_lvl);
8374         driver_remove_file(&megasas_pci_driver.driver,
8375                         &driver_attr_support_poll_for_event);
8376         driver_remove_file(&megasas_pci_driver.driver,
8377                         &driver_attr_support_device_change);
8378         driver_remove_file(&megasas_pci_driver.driver,
8379                            &driver_attr_release_date);
8380         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8381         driver_remove_file(&megasas_pci_driver.driver,
8382                            &driver_attr_support_nvme_encapsulation);
8383
8384         pci_unregister_driver(&megasas_pci_driver);
8385         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8386 }
8387
8388 module_init(megasas_init);
8389 module_exit(megasas_exit);