drivers/scsi/megaraid/megaraid_sas_fusion.h

   1 /*
   2  *  Linux MegaRAID driver for SAS based RAID controllers
   3  *
   4  *  Copyright (c) 2009-2011  LSI Corporation.
   5  *
   6  *  This program is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU General Public License
   8  *  as published by the Free Software Foundation; either version 2
   9  *  of the License, or (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19  *
  20  *  FILE: megaraid_sas_fusion.h
  21  *
  22  *  Authors: LSI Corporation
  23  *           Manoj Jose
  24  *           Sumant Patro
  25  *
  26  *  Send feedback to: <megaraidlinux@lsi.com>
  27  *
  28  *  Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
  29  *     ATTN: Linuxraid
  30  */
  31
  32 #ifndef _MEGARAID_SAS_FUSION_H_
  33 #define _MEGARAID_SAS_FUSION_H_
  34
  35 /* Fusion defines */
  36 #define MEGASAS_MAX_SZ_CHAIN_FRAME 1024
  37 #define MFI_FUSION_ENABLE_INTERRUPT_MASK (0x00000009)
  38 #define MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE 256
  39 #define MEGASAS_MPI2_FUNCTION_PASSTHRU_IO_REQUEST   0xF0
  40 #define MEGASAS_MPI2_FUNCTION_LD_IO_REQUEST         0xF1
  41 #define MEGASAS_LOAD_BALANCE_FLAG                   0x1
  42 #define MEGASAS_DCMD_MBOX_PEND_FLAG                 0x1
  43 #define HOST_DIAG_WRITE_ENABLE                      0x80
  44 #define HOST_DIAG_RESET_ADAPTER                     0x4
  45 #define MEGASAS_FUSION_MAX_RESET_TRIES              3
  46 #define MAX_MSIX_QUEUES_FUSION                      16
  47
  48 /* Invader defines */
  49 #define MPI2_TYPE_CUDA                              0x2
  50 #define MPI25_SAS_DEVICE0_FLAGS_ENABLED_FAST_PATH   0x4000
  51 #define MR_RL_FLAGS_GRANT_DESTINATION_CPU0          0x00
  52 #define MR_RL_FLAGS_GRANT_DESTINATION_CPU1          0x10
  53 #define MR_RL_FLAGS_GRANT_DESTINATION_CUDA          0x80
  54 #define MR_RL_FLAGS_SEQ_NUM_ENABLE                  0x8
  55
  56 /* T10 PI defines */
  57 #define MR_PROT_INFO_TYPE_CONTROLLER                0x8
  58 #define MEGASAS_SCSI_VARIABLE_LENGTH_CMD            0x7f
  59 #define MEGASAS_SCSI_SERVICE_ACTION_READ32          0x9
  60 #define MEGASAS_SCSI_SERVICE_ACTION_WRITE32         0xB
  61 #define MEGASAS_SCSI_ADDL_CDB_LEN                   0x18
  62 #define MEGASAS_RD_WR_PROTECT_CHECK_ALL             0x20
  63 #define MEGASAS_RD_WR_PROTECT_CHECK_NONE            0x60
  64 #define MEGASAS_EEDPBLOCKSIZE                       512
  65
  66 /*
  67  * Raid context flags
  68  */
  69
  70 #define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_SHIFT   0x4
  71 #define MR_RAID_CTX_RAID_FLAGS_IO_SUB_TYPE_MASK    0x30
  72 enum MR_RAID_FLAGS_IO_SUB_TYPE {
  73         MR_RAID_FLAGS_IO_SUB_TYPE_NONE = 0,
  74         MR_RAID_FLAGS_IO_SUB_TYPE_SYSTEM_PD = 1,
  75 };
  76
  77 /*
  78  * Request descriptor types
  79  */
  80 #define MEGASAS_REQ_DESCRIPT_FLAGS_LD_IO           0x7
  81 #define MEGASAS_REQ_DESCRIPT_FLAGS_MFA             0x1
  82 #define MEGASAS_REQ_DESCRIPT_FLAGS_NO_LOCK         0x2
  83 #define MEGASAS_REQ_DESCRIPT_FLAGS_TYPE_SHIFT      1
  84
  85 #define MEGASAS_FP_CMD_LEN      16
  86 #define MEGASAS_FUSION_IN_RESET 0
  87
  88 /*
  89  * Raid Context structure which describes MegaRAID specific IO Paramenters
  90  * This resides at offset 0x60 where the SGL normally starts in MPT IO Frames
  91  */
  92
  93 struct RAID_CONTEXT {
  94         u8      Type:4;
  95         u8      nseg:4;
  96         u8      resvd0;
  97         u16     timeoutValue;
  98         u8      regLockFlags;
  99         u8      resvd1;
 100         u16     VirtualDiskTgtId;
 101         u64     regLockRowLBA;
 102         u32     regLockLength;
 103         u16     nextLMId;
 104         u8      exStatus;
 105         u8      status;
 106         u8      RAIDFlags;
 107         u8      numSGE;
 108         u16     configSeqNum;
 109         u8      spanArm;
 110         u8      resvd2[3];
 111 };
 112
 113 #define RAID_CTX_SPANARM_ARM_SHIFT      (0)
 114 #define RAID_CTX_SPANARM_ARM_MASK       (0x1f)
 115
 116 #define RAID_CTX_SPANARM_SPAN_SHIFT     (5)
 117 #define RAID_CTX_SPANARM_SPAN_MASK      (0xE0)
 118
 119 /*
 120  * define region lock types
 121  */
 122 enum REGION_TYPE {
 123         REGION_TYPE_UNUSED       = 0,
 124         REGION_TYPE_SHARED_READ  = 1,
 125         REGION_TYPE_SHARED_WRITE = 2,
 126         REGION_TYPE_EXCLUSIVE    = 3,
 127 };
 128
 129 /* MPI2 defines */
 130 #define MPI2_FUNCTION_IOC_INIT              (0x02) /* IOC Init */
 131 #define MPI2_WHOINIT_HOST_DRIVER            (0x04)
 132 #define MPI2_VERSION_MAJOR                  (0x02)
 133 #define MPI2_VERSION_MINOR                  (0x00)
 134 #define MPI2_VERSION_MAJOR_MASK             (0xFF00)
 135 #define MPI2_VERSION_MAJOR_SHIFT            (8)
 136 #define MPI2_VERSION_MINOR_MASK             (0x00FF)
 137 #define MPI2_VERSION_MINOR_SHIFT            (0)
 138 #define MPI2_VERSION ((MPI2_VERSION_MAJOR << MPI2_VERSION_MAJOR_SHIFT) | \
 139                       MPI2_VERSION_MINOR)
 140 #define MPI2_HEADER_VERSION_UNIT            (0x10)
 141 #define MPI2_HEADER_VERSION_DEV             (0x00)
 142 #define MPI2_HEADER_VERSION_UNIT_MASK       (0xFF00)
 143 #define MPI2_HEADER_VERSION_UNIT_SHIFT      (8)
 144 #define MPI2_HEADER_VERSION_DEV_MASK        (0x00FF)
 145 #define MPI2_HEADER_VERSION_DEV_SHIFT       (0)
 146 #define MPI2_HEADER_VERSION ((MPI2_HEADER_VERSION_UNIT << 8) | \
 147                              MPI2_HEADER_VERSION_DEV)
 148 #define MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR      (0x03)
 149 #define MPI2_SCSIIO_EEDPFLAGS_INC_PRI_REFTAG        (0x8000)
 150 #define MPI2_SCSIIO_EEDPFLAGS_CHECK_REFTAG          (0x0400)
 151 #define MPI2_SCSIIO_EEDPFLAGS_CHECK_REMOVE_OP       (0x0003)
 152 #define MPI2_SCSIIO_EEDPFLAGS_CHECK_APPTAG          (0x0200)
 153 #define MPI2_SCSIIO_EEDPFLAGS_CHECK_GUARD           (0x0100)
 154 #define MPI2_SCSIIO_EEDPFLAGS_INSERT_OP             (0x0004)
 155 #define MPI2_FUNCTION_SCSI_IO_REQUEST               (0x00) /* SCSI IO */
 156 #define MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY           (0x06)
 157 #define MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO                 (0x00)
 158 #define MPI2_SGE_FLAGS_64_BIT_ADDRESSING        (0x02)
 159 #define MPI2_SCSIIO_CONTROL_WRITE               (0x01000000)
 160 #define MPI2_SCSIIO_CONTROL_READ                (0x02000000)
 161 #define MPI2_REQ_DESCRIPT_FLAGS_TYPE_MASK       (0x0E)
 162 #define MPI2_RPY_DESCRIPT_FLAGS_UNUSED          (0x0F)
 163 #define MPI2_RPY_DESCRIPT_FLAGS_SCSI_IO_SUCCESS (0x00)
 164 #define MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK       (0x0F)
 165 #define MPI2_WRSEQ_FLUSH_KEY_VALUE              (0x0)
 166 #define MPI2_WRITE_SEQUENCE_OFFSET              (0x00000004)
 167 #define MPI2_WRSEQ_1ST_KEY_VALUE                (0xF)
 168 #define MPI2_WRSEQ_2ND_KEY_VALUE                (0x4)
 169 #define MPI2_WRSEQ_3RD_KEY_VALUE                (0xB)
 170 #define MPI2_WRSEQ_4TH_KEY_VALUE                (0x2)
 171 #define MPI2_WRSEQ_5TH_KEY_VALUE                (0x7)
 172 #define MPI2_WRSEQ_6TH_KEY_VALUE                (0xD)
 173
 174 struct MPI25_IEEE_SGE_CHAIN64 {
 175         u64                     Address;
 176         u32                     Length;
 177         u16                     Reserved1;
 178         u8                      NextChainOffset;
 179         u8                      Flags;
 180 };
 181
 182 struct MPI2_SGE_SIMPLE_UNION {
 183         u32                     FlagsLength;
 184         union {
 185                 u32                 Address32;
 186                 u64                 Address64;
 187         } u;
 188 };
 189
 190 struct MPI2_SCSI_IO_CDB_EEDP32 {
 191         u8                      CDB[20];                    /* 0x00 */
 192         u32                     PrimaryReferenceTag;        /* 0x14 */
 193         u16                     PrimaryApplicationTag;      /* 0x18 */
 194         u16                     PrimaryApplicationTagMask;  /* 0x1A */
 195         u32                     TransferLength;             /* 0x1C */
 196 };
 197
 198 struct MPI2_SGE_CHAIN_UNION {
 199         u16                     Length;
 200         u8                      NextChainOffset;
 201         u8                      Flags;
 202         union {
 203                 u32                 Address32;
 204                 u64                 Address64;
 205         } u;
 206 };
 207
 208 struct MPI2_IEEE_SGE_SIMPLE32 {
 209         u32                     Address;
 210         u32                     FlagsLength;
 211 };
 212
 213 struct MPI2_IEEE_SGE_CHAIN32 {
 214         u32                     Address;
 215         u32                     FlagsLength;
 216 };
 217
 218 struct MPI2_IEEE_SGE_SIMPLE64 {
 219         u64                     Address;
 220         u32                     Length;
 221         u16                     Reserved1;
 222         u8                      Reserved2;
 223         u8                      Flags;
 224 };
 225
 226 struct MPI2_IEEE_SGE_CHAIN64 {
 227         u64                     Address;
 228         u32                     Length;
 229         u16                     Reserved1;
 230         u8                      Reserved2;
 231         u8                      Flags;
 232 };
 233
 234 union MPI2_IEEE_SGE_SIMPLE_UNION {
 235         struct MPI2_IEEE_SGE_SIMPLE32  Simple32;
 236         struct MPI2_IEEE_SGE_SIMPLE64  Simple64;
 237 };
 238
 239 union MPI2_IEEE_SGE_CHAIN_UNION {
 240         struct MPI2_IEEE_SGE_CHAIN32   Chain32;
 241         struct MPI2_IEEE_SGE_CHAIN64   Chain64;
 242 };
 243
 244 union MPI2_SGE_IO_UNION {
 245         struct MPI2_SGE_SIMPLE_UNION       MpiSimple;
 246         struct MPI2_SGE_CHAIN_UNION        MpiChain;
 247         union MPI2_IEEE_SGE_SIMPLE_UNION  IeeeSimple;
 248         union MPI2_IEEE_SGE_CHAIN_UNION   IeeeChain;
 249 };
 250
 251 union MPI2_SCSI_IO_CDB_UNION {
 252         u8                      CDB32[32];
 253         struct MPI2_SCSI_IO_CDB_EEDP32 EEDP32;
 254         struct MPI2_SGE_SIMPLE_UNION SGE;
 255 };
 256
 257 /*
 258  * RAID SCSI IO Request Message
 259  * Total SGE count will be one less than  _MPI2_SCSI_IO_REQUEST
 260  */
 261 struct MPI2_RAID_SCSI_IO_REQUEST {
 262         u16                     DevHandle;                      /* 0x00 */
 263         u8                      ChainOffset;                    /* 0x02 */
 264         u8                      Function;                       /* 0x03 */
 265         u16                     Reserved1;                      /* 0x04 */
 266         u8                      Reserved2;                      /* 0x06 */
 267         u8                      MsgFlags;                       /* 0x07 */
 268         u8                      VP_ID;                          /* 0x08 */
 269         u8                      VF_ID;                          /* 0x09 */
 270         u16                     Reserved3;                      /* 0x0A */
 271         u32                     SenseBufferLowAddress;          /* 0x0C */
 272         u16                     SGLFlags;                       /* 0x10 */
 273         u8                      SenseBufferLength;              /* 0x12 */
 274         u8                      Reserved4;                      /* 0x13 */
 275         u8                      SGLOffset0;                     /* 0x14 */
 276         u8                      SGLOffset1;                     /* 0x15 */
 277         u8                      SGLOffset2;                     /* 0x16 */
 278         u8                      SGLOffset3;                     /* 0x17 */
 279         u32                     SkipCount;                      /* 0x18 */
 280         u32                     DataLength;                     /* 0x1C */
 281         u32                     BidirectionalDataLength;        /* 0x20 */
 282         u16                     IoFlags;                        /* 0x24 */
 283         u16                     EEDPFlags;                      /* 0x26 */
 284         u32                     EEDPBlockSize;                  /* 0x28 */
 285         u32                     SecondaryReferenceTag;          /* 0x2C */
 286         u16                     SecondaryApplicationTag;        /* 0x30 */
 287         u16                     ApplicationTagTranslationMask;  /* 0x32 */
 288         u8                      LUN[8];                         /* 0x34 */
 289         u32                     Control;                        /* 0x3C */
 290         union MPI2_SCSI_IO_CDB_UNION  CDB;                      /* 0x40 */
 291         struct RAID_CONTEXT     RaidContext;                    /* 0x60 */
 292         union MPI2_SGE_IO_UNION       SGL;                      /* 0x80 */
 293 };
 294
 295 /*
 296  * MPT RAID MFA IO Descriptor.
 297  */
 298 struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR {
 299         u32     RequestFlags:8;
 300         u32     MessageAddress1:24; /* bits 31:8*/
 301         u32     MessageAddress2;      /* bits 61:32 */
 302 };
 303
 304 /* Default Request Descriptor */
 305 struct MPI2_DEFAULT_REQUEST_DESCRIPTOR {
 306         u8              RequestFlags;               /* 0x00 */
 307         u8              MSIxIndex;                  /* 0x01 */
 308         u16             SMID;                       /* 0x02 */
 309         u16             LMID;                       /* 0x04 */
 310         u16             DescriptorTypeDependent;    /* 0x06 */
 311 };
 312
 313 /* High Priority Request Descriptor */
 314 struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR {
 315         u8              RequestFlags;               /* 0x00 */
 316         u8              MSIxIndex;                  /* 0x01 */
 317         u16             SMID;                       /* 0x02 */
 318         u16             LMID;                       /* 0x04 */
 319         u16             Reserved1;                  /* 0x06 */
 320 };
 321
 322 /* SCSI IO Request Descriptor */
 323 struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR {
 324         u8              RequestFlags;               /* 0x00 */
 325         u8              MSIxIndex;                  /* 0x01 */
 326         u16             SMID;                       /* 0x02 */
 327         u16             LMID;                       /* 0x04 */
 328         u16             DevHandle;                  /* 0x06 */
 329 };
 330
 331 /* SCSI Target Request Descriptor */
 332 struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR {
 333         u8              RequestFlags;               /* 0x00 */
 334         u8              MSIxIndex;                  /* 0x01 */
 335         u16             SMID;                       /* 0x02 */
 336         u16             LMID;                       /* 0x04 */
 337         u16             IoIndex;                    /* 0x06 */
 338 };
 339
 340 /* RAID Accelerator Request Descriptor */
 341 struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR {
 342         u8              RequestFlags;               /* 0x00 */
 343         u8              MSIxIndex;                  /* 0x01 */
 344         u16             SMID;                       /* 0x02 */
 345         u16             LMID;                       /* 0x04 */
 346         u16             Reserved;                   /* 0x06 */
 347 };
 348
 349 /* union of Request Descriptors */
 350 union MEGASAS_REQUEST_DESCRIPTOR_UNION {
 351         struct MPI2_DEFAULT_REQUEST_DESCRIPTOR             Default;
 352         struct MPI2_HIGH_PRIORITY_REQUEST_DESCRIPTOR       HighPriority;
 353         struct MPI2_SCSI_IO_REQUEST_DESCRIPTOR             SCSIIO;
 354         struct MPI2_SCSI_TARGET_REQUEST_DESCRIPTOR         SCSITarget;
 355         struct MPI2_RAID_ACCEL_REQUEST_DESCRIPTOR          RAIDAccelerator;
 356         struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR      MFAIo;
 357         union {
 358                 struct {
 359                         u32 low;
 360                         u32 high;
 361                 } u;
 362                 u64 Words;
 363         };
 364 };
 365
 366 /* Default Reply Descriptor */
 367 struct MPI2_DEFAULT_REPLY_DESCRIPTOR {
 368         u8              ReplyFlags;                 /* 0x00 */
 369         u8              MSIxIndex;                  /* 0x01 */
 370         u16             DescriptorTypeDependent1;   /* 0x02 */
 371         u32             DescriptorTypeDependent2;   /* 0x04 */
 372 };
 373
 374 /* Address Reply Descriptor */
 375 struct MPI2_ADDRESS_REPLY_DESCRIPTOR {
 376         u8              ReplyFlags;                 /* 0x00 */
 377         u8              MSIxIndex;                  /* 0x01 */
 378         u16             SMID;                       /* 0x02 */
 379         u32             ReplyFrameAddress;          /* 0x04 */
 380 };
 381
 382 /* SCSI IO Success Reply Descriptor */
 383 struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR {
 384         u8              ReplyFlags;                 /* 0x00 */
 385         u8              MSIxIndex;                  /* 0x01 */
 386         u16             SMID;                       /* 0x02 */
 387         u16             TaskTag;                    /* 0x04 */
 388         u16             Reserved1;                  /* 0x06 */
 389 };
 390
 391 /* TargetAssist Success Reply Descriptor */
 392 struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR {
 393         u8              ReplyFlags;                 /* 0x00 */
 394         u8              MSIxIndex;                  /* 0x01 */
 395         u16             SMID;                       /* 0x02 */
 396         u8              SequenceNumber;             /* 0x04 */
 397         u8              Reserved1;                  /* 0x05 */
 398         u16             IoIndex;                    /* 0x06 */
 399 };
 400
 401 /* Target Command Buffer Reply Descriptor */
 402 struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR {
 403         u8              ReplyFlags;                 /* 0x00 */
 404         u8              MSIxIndex;                  /* 0x01 */
 405         u8              VP_ID;                      /* 0x02 */
 406         u8              Flags;                      /* 0x03 */
 407         u16             InitiatorDevHandle;         /* 0x04 */
 408         u16             IoIndex;                    /* 0x06 */
 409 };
 410
 411 /* RAID Accelerator Success Reply Descriptor */
 412 struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR {
 413         u8              ReplyFlags;                 /* 0x00 */
 414         u8              MSIxIndex;                  /* 0x01 */
 415         u16             SMID;                       /* 0x02 */
 416         u32             Reserved;                   /* 0x04 */
 417 };
 418
 419 /* union of Reply Descriptors */
 420 union MPI2_REPLY_DESCRIPTORS_UNION {
 421         struct MPI2_DEFAULT_REPLY_DESCRIPTOR                   Default;
 422         struct MPI2_ADDRESS_REPLY_DESCRIPTOR                   AddressReply;
 423         struct MPI2_SCSI_IO_SUCCESS_REPLY_DESCRIPTOR           SCSIIOSuccess;
 424         struct MPI2_TARGETASSIST_SUCCESS_REPLY_DESCRIPTOR TargetAssistSuccess;
 425         struct MPI2_TARGET_COMMAND_BUFFER_REPLY_DESCRIPTOR TargetCommandBuffer;
 426         struct MPI2_RAID_ACCELERATOR_SUCCESS_REPLY_DESCRIPTOR
 427         RAIDAcceleratorSuccess;
 428         u64                                             Words;
 429 };
 430
 431 /* IOCInit Request message */
 432 struct MPI2_IOC_INIT_REQUEST {
 433         u8                      WhoInit;                        /* 0x00 */
 434         u8                      Reserved1;                      /* 0x01 */
 435         u8                      ChainOffset;                    /* 0x02 */
 436         u8                      Function;                       /* 0x03 */
 437         u16                     Reserved2;                      /* 0x04 */
 438         u8                      Reserved3;                      /* 0x06 */
 439         u8                      MsgFlags;                       /* 0x07 */
 440         u8                      VP_ID;                          /* 0x08 */
 441         u8                      VF_ID;                          /* 0x09 */
 442         u16                     Reserved4;                      /* 0x0A */
 443         u16                     MsgVersion;                     /* 0x0C */
 444         u16                     HeaderVersion;                  /* 0x0E */
 445         u32                     Reserved5;                      /* 0x10 */
 446         u16                     Reserved6;                      /* 0x14 */
 447         u8                      Reserved7;                      /* 0x16 */
 448         u8                      HostMSIxVectors;                /* 0x17 */
 449         u16                     Reserved8;                      /* 0x18 */
 450         u16                     SystemRequestFrameSize;         /* 0x1A */
 451         u16                     ReplyDescriptorPostQueueDepth;  /* 0x1C */
 452         u16                     ReplyFreeQueueDepth;            /* 0x1E */
 453         u32                     SenseBufferAddressHigh;         /* 0x20 */
 454         u32                     SystemReplyAddressHigh;         /* 0x24 */
 455         u64                     SystemRequestFrameBaseAddress;  /* 0x28 */
 456         u64                     ReplyDescriptorPostQueueAddress;/* 0x30 */
 457         u64                     ReplyFreeQueueAddress;          /* 0x38 */
 458         u64                     TimeStamp;                      /* 0x40 */
 459 };
 460
 461 /* mrpriv defines */
 462 #define MR_PD_INVALID 0xFFFF
 463 #define MAX_SPAN_DEPTH 8
 464 #define MAX_RAIDMAP_SPAN_DEPTH (MAX_SPAN_DEPTH)
 465 #define MAX_ROW_SIZE 32
 466 #define MAX_RAIDMAP_ROW_SIZE (MAX_ROW_SIZE)
 467 #define MAX_LOGICAL_DRIVES 64
 468 #define MAX_RAIDMAP_LOGICAL_DRIVES (MAX_LOGICAL_DRIVES)
 469 #define MAX_RAIDMAP_VIEWS (MAX_LOGICAL_DRIVES)
 470 #define MAX_ARRAYS 128
 471 #define MAX_RAIDMAP_ARRAYS (MAX_ARRAYS)
 472 #define MAX_PHYSICAL_DEVICES 256
 473 #define MAX_RAIDMAP_PHYSICAL_DEVICES (MAX_PHYSICAL_DEVICES)
 474 #define MR_DCMD_LD_MAP_GET_INFO             0x0300e101
 475
 476 struct MR_DEV_HANDLE_INFO {
 477         u16     curDevHdl;
 478         u8      validHandles;
 479         u8      reserved;
 480         u16     devHandle[2];
 481 };
 482
 483 struct MR_ARRAY_INFO {
 484         u16      pd[MAX_RAIDMAP_ROW_SIZE];
 485 };
 486
 487 struct MR_QUAD_ELEMENT {
 488         u64     logStart;
 489         u64     logEnd;
 490         u64     offsetInSpan;
 491         u32     diff;
 492         u32     reserved1;
 493 };
 494
 495 struct MR_SPAN_INFO {
 496         u32             noElements;
 497         u32             reserved1;
 498         struct MR_QUAD_ELEMENT quad[MAX_RAIDMAP_SPAN_DEPTH];
 499 };
 500
 501 struct MR_LD_SPAN {
 502         u64      startBlk;
 503         u64      numBlks;
 504         u16      arrayRef;
 505         u8       reserved[6];
 506 };
 507
 508 struct MR_SPAN_BLOCK_INFO {
 509         u64          num_rows;
 510         struct MR_LD_SPAN   span;
 511         struct MR_SPAN_INFO block_span_info;
 512 };
 513
 514 struct MR_LD_RAID {
 515         struct {
 516                 u32     fpCapable:1;
 517                 u32     reserved5:3;
 518                 u32     ldPiMode:4;
 519                 u32     pdPiMode:4;
 520                 u32     encryptionType:8;
 521                 u32     fpWriteCapable:1;
 522                 u32     fpReadCapable:1;
 523                 u32     fpWriteAcrossStripe:1;
 524                 u32     fpReadAcrossStripe:1;
 525                 u32     reserved4:8;
 526         } capability;
 527         u32     reserved6;
 528         u64     size;
 529         u8      spanDepth;
 530         u8      level;
 531         u8      stripeShift;
 532         u8      rowSize;
 533         u8      rowDataSize;
 534         u8      writeMode;
 535         u8      PRL;
 536         u8      SRL;
 537         u16     targetId;
 538         u8      ldState;
 539         u8      regTypeReqOnWrite;
 540         u8      modFactor;
 541         u8      regTypeReqOnRead;
 542         u16     seqNum;
 543
 544         struct {
 545                 u32 ldSyncRequired:1;
 546                 u32 reserved:31;
 547         } flags;
 548
 549         u8      reserved3[0x5C];
 550 };
 551
 552 struct MR_LD_SPAN_MAP {
 553         struct MR_LD_RAID          ldRaid;
 554         u8                  dataArmMap[MAX_RAIDMAP_ROW_SIZE];
 555         struct MR_SPAN_BLOCK_INFO  spanBlock[MAX_RAIDMAP_SPAN_DEPTH];
 556 };
 557
 558 struct MR_FW_RAID_MAP {
 559         u32                 totalSize;
 560         union {
 561                 struct {
 562                         u32         maxLd;
 563                         u32         maxSpanDepth;
 564                         u32         maxRowSize;
 565                         u32         maxPdCount;
 566                         u32         maxArrays;
 567                 } validationInfo;
 568                 u32             version[5];
 569                 u32             reserved1[5];
 570         };
 571
 572         u32                 ldCount;
 573         u32                 Reserved1;
 574         u8                  ldTgtIdToLd[MAX_RAIDMAP_LOGICAL_DRIVES+
 575                                         MAX_RAIDMAP_VIEWS];
 576         u8                  fpPdIoTimeoutSec;
 577         u8                  reserved2[7];
 578         struct MR_ARRAY_INFO       arMapInfo[MAX_RAIDMAP_ARRAYS];
 579         struct MR_DEV_HANDLE_INFO  devHndlInfo[MAX_RAIDMAP_PHYSICAL_DEVICES];
 580         struct MR_LD_SPAN_MAP      ldSpanMap[1];
 581 };
 582
 583 struct IO_REQUEST_INFO {
 584         u64 ldStartBlock;
 585         u32 numBlocks;
 586         u16 ldTgtId;
 587         u8 isRead;
 588         u16 devHandle;
 589         u64 pdBlock;
 590         u8 fpOkForIo;
 591 };
 592
 593 struct MR_LD_TARGET_SYNC {
 594         u8  targetId;
 595         u8  reserved;
 596         u16 seqNum;
 597 };
 598
 599 #define IEEE_SGE_FLAGS_ADDR_MASK            (0x03)
 600 #define IEEE_SGE_FLAGS_SYSTEM_ADDR          (0x00)
 601 #define IEEE_SGE_FLAGS_IOCDDR_ADDR          (0x01)
 602 #define IEEE_SGE_FLAGS_IOCPLB_ADDR          (0x02)
 603 #define IEEE_SGE_FLAGS_IOCPLBNTA_ADDR       (0x03)
 604 #define IEEE_SGE_FLAGS_CHAIN_ELEMENT        (0x80)
 605 #define IEEE_SGE_FLAGS_END_OF_LIST          (0x40)
 606
 607 struct megasas_register_set;
 608 struct megasas_instance;
 609
 610 union desc_word {
 611         u64 word;
 612         struct {
 613                 u32 low;
 614                 u32 high;
 615         } u;
 616 };
 617
 618 struct megasas_cmd_fusion {
 619         struct MPI2_RAID_SCSI_IO_REQUEST        *io_request;
 620         dma_addr_t                      io_request_phys_addr;
 621
 622         union MPI2_SGE_IO_UNION *sg_frame;
 623         dma_addr_t              sg_frame_phys_addr;
 624
 625         u8 *sense;
 626         dma_addr_t sense_phys_addr;
 627
 628         struct list_head list;
 629         struct scsi_cmnd *scmd;
 630         struct megasas_instance *instance;
 631
 632         u8 retry_for_fw_reset;
 633         union MEGASAS_REQUEST_DESCRIPTOR_UNION  *request_desc;
 634
 635         /*
 636          * Context for a MFI frame.
 637          * Used to get the mfi cmd from list when a MFI cmd is completed
 638          */
 639         u32 sync_cmd_idx;
 640         u32 index;
 641         u8 flags;
 642 };
 643
 644 struct LD_LOAD_BALANCE_INFO {
 645         u8      loadBalanceFlag;
 646         u8      reserved1;
 647         u16     raid1DevHandle[2];
 648         atomic_t     scsi_pending_cmds[2];
 649         u64     last_accessed_block[2];
 650 };
 651
 652 struct MR_FW_RAID_MAP_ALL {
 653         struct MR_FW_RAID_MAP raidMap;
 654         struct MR_LD_SPAN_MAP ldSpanMap[MAX_LOGICAL_DRIVES - 1];
 655 } __attribute__ ((packed));
 656
 657 struct fusion_context {
 658         struct megasas_cmd_fusion **cmd_list;
 659         struct list_head cmd_pool;
 660
 661         spinlock_t cmd_pool_lock;
 662
 663         dma_addr_t req_frames_desc_phys;
 664         u8 *req_frames_desc;
 665
 666         struct dma_pool *io_request_frames_pool;
 667         dma_addr_t io_request_frames_phys;
 668         u8 *io_request_frames;
 669
 670         struct dma_pool *sg_dma_pool;
 671         struct dma_pool *sense_dma_pool;
 672
 673         dma_addr_t reply_frames_desc_phys;
 674         union MPI2_REPLY_DESCRIPTORS_UNION *reply_frames_desc;
 675         struct dma_pool *reply_frames_desc_pool;
 676
 677         u16 last_reply_idx[MAX_MSIX_QUEUES_FUSION];
 678
 679         u32 reply_q_depth;
 680         u32 request_alloc_sz;
 681         u32 reply_alloc_sz;
 682         u32 io_frames_alloc_sz;
 683
 684         u16     max_sge_in_main_msg;
 685         u16     max_sge_in_chain;
 686
 687         u8      chain_offset_io_request;
 688         u8      chain_offset_mfi_pthru;
 689
 690         struct MR_FW_RAID_MAP_ALL *ld_map[2];
 691         dma_addr_t ld_map_phys[2];
 692
 693         u32 map_sz;
 694         u8 fast_path_io;
 695         struct LD_LOAD_BALANCE_INFO load_balance_info[MAX_LOGICAL_DRIVES];
 696 };
 697
 698 union desc_value {
 699         u64 word;
 700         struct {
 701                 u32 low;
 702                 u32 high;
 703         } u;
 704 };
 705
 706 #endif /* _MEGARAID_SAS_FUSION_H_ */