/*
 * Copyright © 2012 Intel Corporation
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 *
 * Author: Benjamin Segovia <benjamin.segovia@intel.com>
 */

/*
 Copyright (C) Intel Corp.  2006.  All Rights Reserved.
 Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
 develop this 3D driver.

 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
 "Software"), to deal in the Software without restriction, including
 without limitation the rights to use, copy, modify, merge, publish,
 distribute, sublicense, and/or sell copies of the Software, and to
 permit persons to whom the Software is furnished to do so, subject to
 the following conditions:

 The above copyright notice and this permission notice (including the
 next paragraph) shall be included in all copies or substantial
 portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 **********************************************************************/
 /*
  * Authors:
  *   Keith Whitwell <keith@tungstengraphics.com>
  */

#ifndef __GEN_DEFS_HPP__
#define __GEN_DEFS_HPP__

#include <stdint.h>
#include "backend/gen7_instruction.hpp"
#include "backend/gen8_instruction.hpp"

/////////////////////////////////////////////////////////////////////////////
// Gen EU defines
/////////////////////////////////////////////////////////////////////////////

/* Execution Unit (EU) defines */
#define GEN_ALIGN_1   0
#define GEN_ALIGN_16  1

#define GEN_REG_SIZE 32

#define GEN_ADDRESS_DIRECT                        0
#define GEN_ADDRESS_REGISTER_INDIRECT_REGISTER    1

#define GEN_CHANNEL_X     0
#define GEN_CHANNEL_Y     1
#define GEN_CHANNEL_Z     2
#define GEN_CHANNEL_W     3

#define GEN_COMPRESSION_Q1  0
#define GEN_COMPRESSION_Q2  1
#define GEN_COMPRESSION_Q3  2
#define GEN_COMPRESSION_Q4  3
#define GEN_COMPRESSION_H1  0
#define GEN_COMPRESSION_H2  2

#define GEN_CONDITIONAL_NONE  0
#define GEN_CONDITIONAL_Z     1
#define GEN_CONDITIONAL_NZ    2
#define GEN_CONDITIONAL_EQ    1 /* Z */
#define GEN_CONDITIONAL_NEQ   2 /* NZ */
#define GEN_CONDITIONAL_G     3
#define GEN_CONDITIONAL_GE    4
#define GEN_CONDITIONAL_L     5
#define GEN_CONDITIONAL_LE    6
#define GEN_CONDITIONAL_R     7
#define GEN_CONDITIONAL_O     8
#define GEN_CONDITIONAL_U     9

#define GEN_DEBUG_NONE        0
#define GEN_DEBUG_BREAKPOINT  1

#define GEN_DEPENDENCY_NORMAL         0
#define GEN_DEPENDENCY_NOTCLEARED     1
#define GEN_DEPENDENCY_NOTCHECKED     2
#define GEN_DEPENDENCY_DISABLE        3

#define GEN_HORIZONTAL_STRIDE_0   0
#define GEN_HORIZONTAL_STRIDE_1   1
#define GEN_HORIZONTAL_STRIDE_2   2
#define GEN_HORIZONTAL_STRIDE_4   3

#define GEN_INSTRUCTION_NORMAL    0
#define GEN_INSTRUCTION_SATURATE  1

#define GEN_MASK_ENABLE   0
#define GEN_MASK_DISABLE  1

/*! Gen opcode */
enum opcode {
  GEN_OPCODE_MOV = 1,
  GEN_OPCODE_SEL = 2,
  GEN_OPCODE_NOT = 4,
  GEN_OPCODE_AND = 5,
  GEN_OPCODE_OR = 6,
  GEN_OPCODE_XOR = 7,
  GEN_OPCODE_SHR = 8,
  GEN_OPCODE_SHL = 9,
  GEN_OPCODE_RSR = 10,
  GEN_OPCODE_RSL = 11,
  GEN_OPCODE_ASR = 12,
  GEN_OPCODE_CMP = 16,
  GEN_OPCODE_CMPN = 17,
  GEN_OPCODE_F32TO16 = 19,
  GEN_OPCODE_F16TO32 = 20,
  GEN_OPCODE_JMPI = 32,
  GEN_OPCODE_BRD = 33,
  GEN_OPCODE_IF = 34,
  GEN_OPCODE_BRC = 35,
  GEN_OPCODE_ELSE = 36,
  GEN_OPCODE_ENDIF = 37,
  GEN_OPCODE_DO = 38,
  GEN_OPCODE_WHILE = 39,
  GEN_OPCODE_BREAK = 40,
  GEN_OPCODE_CONTINUE = 41,
  GEN_OPCODE_HALT = 42,
  GEN_OPCODE_MSAVE = 44,
  GEN_OPCODE_MRESTORE = 45,
  GEN_OPCODE_PUSH = 46,
  GEN_OPCODE_POP = 47,
  GEN_OPCODE_WAIT = 48,
  GEN_OPCODE_SEND = 49,
  GEN_OPCODE_SENDC = 50,
  GEN_OPCODE_MATH = 56,
  GEN_OPCODE_ADD = 64,
  GEN_OPCODE_MUL = 65,
  GEN_OPCODE_AVG = 66,
  GEN_OPCODE_FRC = 67,
  GEN_OPCODE_RNDU = 68,
  GEN_OPCODE_RNDD = 69,
  GEN_OPCODE_RNDE = 70,
  GEN_OPCODE_RNDZ = 71,
  GEN_OPCODE_MAC = 72,
  GEN_OPCODE_MACH = 73,
  GEN_OPCODE_LZD = 74,
  GEN_OPCODE_FBH = 75,
  GEN_OPCODE_FBL = 76,
  GEN_OPCODE_CBIT = 77,
  GEN_OPCODE_ADDC = 78,
  GEN_OPCODE_SUBB = 79,
  GEN_OPCODE_SAD2 = 80,
  GEN_OPCODE_SADA2 = 81,
  GEN_OPCODE_DP4 = 84,
  GEN_OPCODE_DPH = 85,
  GEN_OPCODE_DP3 = 86,
  GEN_OPCODE_DP2 = 87,
  GEN_OPCODE_DPA2 = 88,
  GEN_OPCODE_LINE = 89,
  GEN_OPCODE_PLN = 90,
  GEN_OPCODE_MAD = 91,
  GEN_OPCODE_NOP = 126,
};

#define GEN_ATOMIC_SIMD16   0
#define GEN_ATOMIC_SIMD8    1

enum GenAtomicOpCode {
  GEN_ATOMIC_OP_CMPWR8B   = 0,
  GEN_ATOMIC_OP_AND       = 1,
  GEN_ATOMIC_OP_OR        = 2,
  GEN_ATOMIC_OP_XOR       = 3,
  GEN_ATOMIC_OP_MOV       = 4,
  GEN_ATOMIC_OP_INC       = 5,
  GEN_ATOMIC_OP_DEC       = 6,
  GEN_ATOMIC_OP_ADD       = 7,
  GEN_ATOMIC_OP_SUB       = 8,
  GEN_ATOMIC_OP_REVSUB    = 9,
  GEN_ATOMIC_OP_IMAX      = 10,
  GEN_ATOMIC_OP_IMIN      = 11,
  GEN_ATOMIC_OP_UMAX      = 12,
  GEN_ATOMIC_OP_UMIN      = 13,
  GEN_ATOMIC_OP_CMPWR     = 14,
  GEN_ATOMIC_OP_PREDEC    = 15
};

/*! Gen SFID */
enum GenMessageTarget {
  GEN_SFID_NULL                     = 0,
  GEN_SFID_RESERVED                 = 1,
  GEN_SFID_SAMPLER                  = 2,
  GEN_SFID_MESSAGE_GATEWAY          = 3,
  GEN_SFID_DATAPORT_SAMPLER         = 4,
  GEN_SFID_DATAPORT_RENDER          = 5,
  GEN_SFID_URB                      = 6,
  GEN_SFID_THREAD_SPAWNER           = 7,
  GEN_SFID_VIDEO_MOTION_EST         = 8,
  GEN_SFID_DATAPORT_CONSTANT        = 9,
  GEN_SFID_DATAPORT_DATA            = 10,
  GEN_SFID_PIXEL_INTERPOLATOR       = 11,
  GEN_SFID_DATAPORT1_DATA           = 12, /* New for HSW and BDW. */
};

#define GEN_PREDICATE_NONE                    0
#define GEN_PREDICATE_NORMAL                  1
#define GEN_PREDICATE_ALIGN1_ANYV             2
#define GEN_PREDICATE_ALIGN1_ALLV             3
#define GEN_PREDICATE_ALIGN1_ANY2H            4
#define GEN_PREDICATE_ALIGN1_ALL2H            5
#define GEN_PREDICATE_ALIGN1_ANY4H            6
#define GEN_PREDICATE_ALIGN1_ALL4H            7
#define GEN_PREDICATE_ALIGN1_ANY8H            8
#define GEN_PREDICATE_ALIGN1_ALL8H            9
#define GEN_PREDICATE_ALIGN1_ANY16H           10
#define GEN_PREDICATE_ALIGN1_ALL16H           11
#define GEN_PREDICATE_ALIGN16_REPLICATE_X     2
#define GEN_PREDICATE_ALIGN16_REPLICATE_Y     3
#define GEN_PREDICATE_ALIGN16_REPLICATE_Z     4
#define GEN_PREDICATE_ALIGN16_REPLICATE_W     5
#define GEN_PREDICATE_ALIGN16_ANY4H           6
#define GEN_PREDICATE_ALIGN16_ALL4H           7

#define GEN_ARCHITECTURE_REGISTER_FILE        0
#define GEN_GENERAL_REGISTER_FILE             1
#define GEN_IMMEDIATE_VALUE                   3

#define GEN_TYPE_UD  0
#define GEN_TYPE_D   1
#define GEN_TYPE_UW  2
#define GEN_TYPE_W   3
#define GEN_TYPE_UB  4
#define GEN_TYPE_B   5
#define GEN_TYPE_VF  5 /* packed float vector, immediates only? */
#define GEN_TYPE_V   6 /* packed int vector, immediates only, uword dest only */
#define GEN_TYPE_DF  6
#define GEN_TYPE_F   7
#define GEN_TYPE_UL  8
#define GEN_TYPE_L   9
#define GEN_TYPE_HF  10
#define GEN_TYPE_DF_IMM  10 /* For the double float in imm. */
#define GEN_TYPE_HF_IMM  11 /* For the half float in imm. */

#define GEN_ARF_NULL                  0x00
#define GEN_ARF_ADDRESS               0x10
#define GEN_ARF_ACCUMULATOR           0x20
#define GEN_ARF_FLAG                  0x30
#define GEN_ARF_MASK                  0x40
#define GEN_ARF_MASK_STACK            0x50
#define GEN_ARF_MASK_STACK_DEPTH      0x60
#define GEN_ARF_STATE                 0x70
#define GEN_ARF_CONTROL               0x80
#define GEN_ARF_NOTIFICATION_COUNT    0x90
#define GEN_ARF_IP                    0xA0
#define GEN_ARF_TM                    0xC0

#define GEN_MRF_COMPR4   (1 << 7)

#define GEN_AMASK   0
#define GEN_IMASK   1
#define GEN_LMASK   2
#define GEN_CMASK   3

#define GEN_THREAD_NORMAL     0
#define GEN_THREAD_ATOMIC     1
#define GEN_THREAD_SWITCH     2

#define GEN_VERTICAL_STRIDE_0                 0
#define GEN_VERTICAL_STRIDE_1                 1
#define GEN_VERTICAL_STRIDE_2                 2
#define GEN_VERTICAL_STRIDE_4                 3
#define GEN_VERTICAL_STRIDE_8                 4
#define GEN_VERTICAL_STRIDE_16                5
#define GEN_VERTICAL_STRIDE_32                6
#define GEN_VERTICAL_STRIDE_64                7
#define GEN_VERTICAL_STRIDE_128               8
#define GEN_VERTICAL_STRIDE_256               9
#define GEN_VERTICAL_STRIDE_ONE_DIMENSIONAL   0xF

/* Execution width */
#define GEN_WIDTH_1       0
#define GEN_WIDTH_2       1
#define GEN_WIDTH_4       2
#define GEN_WIDTH_8       3
#define GEN_WIDTH_16      4
#define GEN_WIDTH_32      5

/* Channels to enable for the untyped reads and writes */
#define GEN_UNTYPED_RED   (1 << 0)
#define GEN_UNTYPED_GREEN (1 << 1)
#define GEN_UNTYPED_BLUE  (1 << 2)
#define GEN_UNTYPED_ALPHA (1 << 3)

/* SIMD mode for untyped reads and writes */
#define GEN_UNTYPED_SIMD4x2 0
#define GEN_UNTYPED_SIMD16  1
#define GEN_UNTYPED_SIMD8   2

/* SIMD mode for byte scatters / gathers */
#define GEN_BYTE_SCATTER_SIMD8    0
#define GEN_BYTE_SCATTER_SIMD16   1

/* Data port message type for gen7*/
#define GEN7_OBLOCK_READ           0 //0000: OWord Block Read
#define GEN7_UNALIGNED_OBLOCK_READ 1 //0001: Unaligned OWord Block Read
#define GEN7_ODBLOCK_READ          2 //0010: OWord Dual Block Read
#define GEN7_DWORD_GATHER          3 //0011: DWord Scattered Read
#define GEN7_BYTE_GATHER           4 //0100: Byte Scattered Read
#define GEN7_UNTYPED_READ          5 //0101: Untyped Surface Read
#define GEN7_UNTYPED_ATOMIC_READ   6 //0110: Untyped Atomic Operation
#define GEN7_MEMORY_FENCE          7 //0111: Memory Fence
#define GEN7_OBLOCK_WRITE          8 //1000: OWord Block Write
#define GEN7_ODBLOCK_WRITE         10//1010: OWord Dual Block Write
#define GEN7_DWORD_SCATTER         11//1011: DWord Scattered Write
#define GEN7_BYTE_SCATTER          12//1100: Byte Scattered Write
#define GEN7_UNTYPED_WRITE         13//1101: Untyped Surface Write

/* Data port0 message type for Gen75*/
#define GEN75_P0_OBLOCK_READ            0 //0000: OWord Block Read
#define GEN75_P0_UNALIGNED_OBLOCK_READ  1 //0001: Unaligned OWord Block Read
#define GEN75_P0_ODBLOCK_READ           2 //0010: OWord Dual Block Read
#define GEN75_P0_DWORD_GATHER           3 //0011: DWord Scattered Read
#define GEN75_P0_BYTE_GATHER            4 //0100: Byte Scattered Read
#define GEN75_P0_MEMORY_FENCE           7 //0111: Memory Fence
#define GEN75_P0_OBLOCK_WRITE           8 //1000: OWord Block Write
#define GEN75_P0_ODBLOCK_WRITE         10 //1010: OWord Dual Block Write
#define GEN75_P0_DWORD_SCATTER         11 //1011: DWord Scattered Write
#define GEN75_P0_BYTE_SCATTER          12 //1100: Byte Scattered Write

/* Data port1 message type for Gen75*/
#define GEN75_P1_UNTYPED_READ           1 //0001: Untyped Surface Read
#define GEN75_P1_UNTYPED_ATOMIC_OP      2 //0010: Untyped Atomic Operation
#define GEN75_P1_UNTYPED_ATOMIC_OP_4X2  3 //0011: Untyped Atomic Operation SIMD4x2
#define GEN75_P1_MEDIA_BREAD            4 //0100: Media Block Read
#define GEN75_P1_TYPED_SURFACE_READ     5 //0101: Typed Surface Read
#define GEN75_P1_TYPED_ATOMIC_OP        6 //0110: Typed Atomic Operation
#define GEN75_P1_TYPED_ATOMIC_OP_4X2    7 //0111: Typed Atomic Operation SIMD4x2
#define GEN75_P1_UNTYPED_SURFACE_WRITE  9 //1001: Untyped Surface Write
#define GEN75_P1_MEDIA_TYPED_BWRITE    10 //1010: Media Block Write
#define GEN75_P1_ATOMIC_COUNTER        11 //1011: Atomic Counter Operation
#define GEN75_P1_ATOMIC_COUNTER_4X2    12 //1100: Atomic Counter Operation 4X2
#define GEN75_P1_TYPED_SURFACE_WRITE   13 //1101: Typed Surface Write

/* Data port data cache scratch messages*/
#define GEN_SCRATCH_READ                  0
#define GEN_SCRATCH_WRITE                 1
#define GEN_SCRATCH_CHANNEL_MODE_OWORD    0
#define GEN_SCRATCH_CHANNEL_MODE_DWORD    1
#define GEN_SCRATCH_BLOCK_SIZE_1          0
#define GEN_SCRATCH_BLOCK_SIZE_2          1
#define GEN_SCRATCH_BLOCK_SIZE_4          3

/* Data port render cache Message Type*/
#define GEN_MBLOCK_READ           4  //0100: Media Block Read
#define GEN_TYPED_READ            5  //0101: Typed Surface Read
#define GEN_TYPED_ATOMIC          6  //0110: Typed Atomic Operation
#define GEN_MEM_FENCE             7  //0111: Memory Fence
#define GEN_MBLOCK_WRITE          10 //1010: Media Block Write
#define GEN_RENDER_WRITE          12 //1100: Render Target Write
#define GEN_TYPED_WRITE           13 //1101: Typed Surface Write

/* For byte scatters and gathers, the element to write */
#define GEN_BYTE_SCATTER_BYTE   0
#define GEN_BYTE_SCATTER_WORD   1
#define GEN_BYTE_SCATTER_DWORD  2
#define GEN_BYTE_SCATTER_QWORD  3

/* dword scattered rw */
#define GEN_DWORD_SCATTER_8_DWORDS   2
#define GEN_DWORD_SCATTER_16_DWORDS  3

#define GEN_SAMPLER_RETURN_FORMAT_FLOAT32     0
#define GEN_SAMPLER_RETURN_FORMAT_UINT32      2
#define GEN_SAMPLER_RETURN_FORMAT_SINT32      3

#define GEN_SAMPLER_MESSAGE_SIMD8_SAMPLE              0
#define GEN_SAMPLER_MESSAGE_SIMD16_SAMPLE             0
#define GEN_SAMPLER_MESSAGE_SIMD16_SAMPLE_BIAS        0
#define GEN_SAMPLER_MESSAGE_SIMD8_KILLPIX             1
#define GEN_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_LOD        1
#define GEN_SAMPLER_MESSAGE_SIMD16_SAMPLE_LOD         1
#define GEN_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_GRADIENTS  2
#define GEN_SAMPLER_MESSAGE_SIMD8_SAMPLE_GRADIENTS    2
#define GEN_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_COMPARE    0
#define GEN_SAMPLER_MESSAGE_SIMD16_SAMPLE_COMPARE     2
#define GEN_SAMPLER_MESSAGE_SIMD8_SAMPLE_BIAS_COMPARE 0
#define GEN_SAMPLER_MESSAGE_SIMD4X2_SAMPLE_LOD_COMPARE 1
#define GEN_SAMPLER_MESSAGE_SIMD8_SAMPLE_LOD_COMPARE  1
#define GEN_SAMPLER_MESSAGE_SIMD4X2_RESINFO           2
#define GEN_SAMPLER_MESSAGE_SIMD16_RESINFO            2
#define GEN_SAMPLER_MESSAGE_SIMD4X2_LD                7
#define GEN_SAMPLER_MESSAGE_SIMD8_LD                  7
#define GEN_SAMPLER_MESSAGE_SIMD16_LD                 7

#define GEN5_SAMPLER_MESSAGE_SAMPLE              0
#define GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS         1
#define GEN5_SAMPLER_MESSAGE_SAMPLE_LOD          2
#define GEN5_SAMPLER_MESSAGE_SAMPLE_COMPARE      3
#define GEN5_SAMPLER_MESSAGE_SAMPLE_DERIVS       4
#define GEN5_SAMPLER_MESSAGE_SAMPLE_BIAS_COMPARE 5
#define GEN5_SAMPLER_MESSAGE_SAMPLE_LOD_COMPARE  6
#define GEN5_SAMPLER_MESSAGE_SAMPLE_LD           7
#define GEN5_SAMPLER_MESSAGE_SAMPLE_RESINFO      10

/* for GEN5 only */
#define GEN_SAMPLER_SIMD_MODE_SIMD4X2                   0
#define GEN_SAMPLER_SIMD_MODE_SIMD8                     1
#define GEN_SAMPLER_SIMD_MODE_SIMD16                    2
#define GEN_SAMPLER_SIMD_MODE_SIMD32_64                 3

#define GEN_MATH_FUNCTION_INV                              1
#define GEN_MATH_FUNCTION_LOG                              2
#define GEN_MATH_FUNCTION_EXP                              3
#define GEN_MATH_FUNCTION_SQRT                             4
#define GEN_MATH_FUNCTION_RSQ                              5
#define GEN_MATH_FUNCTION_SIN                              6 /* was 7 */
#define GEN_MATH_FUNCTION_COS                              7 /* was 8 */
#define GEN_MATH_FUNCTION_FDIV                             9 /* gen6+ */
#define GEN_MATH_FUNCTION_POW                              10
#define GEN_MATH_FUNCTION_INT_DIV_QUOTIENT_AND_REMAINDER   11
#define GEN_MATH_FUNCTION_INT_DIV_QUOTIENT                 12
#define GEN_MATH_FUNCTION_INT_DIV_REMAINDER                13
#define GEN8_MATH_FUNCTION_INVM                            14
#define GEN8_MATH_FUNCTION_RSQRTM                          15

#define GEN_MATH_INTEGER_UNSIGNED     0
#define GEN_MATH_INTEGER_SIGNED       1

#define GEN_MATH_PRECISION_FULL        0
#define GEN_MATH_PRECISION_PARTIAL     1

#define GEN_MATH_SATURATE_NONE         0
#define GEN_MATH_SATURATE_SATURATE     1

#define GEN_MATH_DATA_VECTOR  0
#define GEN_MATH_DATA_SCALAR  1

#define GEN_DEREFERENCE_URB 0
#define GEN_DO_NOT_DEREFERENCE_URB 1

#define GEN_MAX_NUM_BUFFER_ENTRIES (1 << 27)

/* Message gateway */
#define GEN_OPEN_GATEWAY          0b000
#define GEN_CLOSE_GATEWAY         0b001
#define GEN_FORWARD_MSG           0b010
#define GEN_GET_TIME_STAMP        0b011
#define GEN_BARRIER_MSG           0b100
#define GEN_UPDATE_GATEWAT_STATE  0b101
#define GEN_MMIO_READ_WRITE       0b110

/////////////////////////////////////////////////////////////////////////////
// Gen EU structures
/////////////////////////////////////////////////////////////////////////////

/** Number of general purpose registers (VS, WM, etc) */
#define GEN_MAX_GRF 128

/* Instruction format for the execution units */

struct GenInstruction {
  uint32_t low;
  uint32_t high;
};

union GenCompactInstruction {
  struct GenInstruction low;
  struct {
    struct {
      uint32_t opcode:7;
      uint32_t debug_control:1;
      uint32_t control_index:5;
      uint32_t data_type_index:5;
      uint32_t sub_reg_index:5;
      uint32_t acc_wr_control:1;
      uint32_t destreg_or_condmod:4;
      uint32_t pad:1;
      uint32_t cmpt_control:1;
      uint32_t src0_index_lo:2;
    } bits1;
    struct {
      uint32_t src0_index_hi:3;
      uint32_t src1_index:5;
      uint32_t dest_reg_nr:8;
      uint32_t src0_reg_nr:8;
      uint32_t src1_reg_nr:8;
    } bits2;
  };
};

union GenNativeInstruction
{
  struct {
    struct GenInstruction low;
    struct GenInstruction high;
  };
  union Gen7NativeInstruction gen7_insn;
  union Gen8NativeInstruction gen8_insn;

  //Gen7 & Gen8 common field
  struct {
    struct {
      uint32_t opcode:7;
      uint32_t pad:1;
      uint32_t access_mode:1;
      uint32_t pad1:3;
      uint32_t quarter_control:2;
      uint32_t thread_control:2;
      uint32_t predicate_control:4;
      uint32_t predicate_inverse:1;
      uint32_t execution_size:3;
      uint32_t destreg_or_condmod:4;
      uint32_t acc_wr_control:1;
      uint32_t cmpt_control:1;
      uint32_t debug_control:1;
      uint32_t saturate:1;
    } header;

    struct {
      uint32_t pad1:32;
    } bits1;

    struct {
      uint32_t pad2:32;
    } bits2;

    union {
      struct {
        uint32_t function_control:19;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad1:2;
        uint32_t end_of_thread:1;
      } generic_gen5;

      struct {
        uint32_t sub_function_id:3;
        uint32_t pad0:11;
        uint32_t ack_req:1;
        uint32_t notify:2;
        uint32_t pad1:2;
        uint32_t header:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad2:2;
        uint32_t end_of_thread:1;
      } msg_gateway;

      struct {
        uint32_t opcode:1;
        uint32_t request:1;
        uint32_t pad0:2;
        uint32_t resource:1;
        uint32_t pad1:14;
        uint32_t header:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad2:2;
        uint32_t end_of_thread:1;
      } spawner_gen5;

      /** Ironlake PRM, Volume 4 Part 1, Section 6.1.1.1 */
      struct {
        uint32_t function:4;
        uint32_t int_type:1;
        uint32_t precision:1;
        uint32_t saturate:1;
        uint32_t data_type:1;
        uint32_t snapshot:1;
        uint32_t pad0:10;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad1:2;
        uint32_t end_of_thread:1;
      } math_gen5;

      struct {
        uint32_t bti:8;
        uint32_t sampler:4;
        uint32_t msg_type:5;
        uint32_t simd_mode:2;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad1:2;
        uint32_t end_of_thread:1;
      } sampler_gen7;

      /**
       * Message for the Sandybridge Sampler Cache or Constant Cache Data Port.
       *
       * See the Sandybridge PRM, Volume 4 Part 1, Section 3.9.2.1.1.
       **/
      struct {
        uint32_t bti:8;
        uint32_t msg_control:5;
        uint32_t msg_type:3;
        uint32_t pad0:3;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad1:2;
        uint32_t end_of_thread:1;
      } gen6_dp_sampler_const_cache;

      /*! Data port untyped read / write messages */
      struct {
        uint32_t bti:8;
        uint32_t rgba:4;
        uint32_t simd_mode:2;
        uint32_t msg_type:4;
        uint32_t category:1;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad2:2;
        uint32_t end_of_thread:1;
      } gen7_untyped_rw;

      /*! Data port byte scatter / gather */
      struct {
        uint32_t bti:8;
        uint32_t simd_mode:1;
        uint32_t ignored0:1;
        uint32_t data_size:2;
        uint32_t ignored1:2;
        uint32_t msg_type:4;
        uint32_t category:1;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad2:2;
        uint32_t end_of_thread:1;
      } gen7_byte_rw;

      /*! Data port Scratch Read/ write */
      struct {
        uint32_t offset:12;
        uint32_t block_size:2;
        uint32_t ignored0:1;
        uint32_t invalidate_after_read:1;
        uint32_t channel_mode:1;
        uint32_t msg_type:1;
        uint32_t category:1;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad2:2;
        uint32_t end_of_thread:1;
      } gen7_scratch_rw;

      /*! Data port OBlock read / write */
      struct {
        uint32_t bti:8;
        uint32_t block_size:3;
        uint32_t ignored:2;
        uint32_t invalidate_after_read:1;
        uint32_t msg_type:4;
        uint32_t category:1;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad2:2;
        uint32_t end_of_thread:1;
      } gen7_oblock_rw;

      /*! Data port dword scatter / gather */
      struct {
        uint32_t bti:8;
        uint32_t block_size:2;
        uint32_t ignored0:3;
        uint32_t invalidate_after_read:1;
        uint32_t msg_type:4;
        uint32_t ignored1:1;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad2:2;
        uint32_t end_of_thread:1;
      } gen7_dword_rw;

      /*! Data port typed read / write messages */
      struct {
        uint32_t bti:8;
        uint32_t chan_mask:4;
        uint32_t slot:2;
        uint32_t msg_type:4;
        uint32_t pad2:1;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad3:2;
        uint32_t end_of_thread:1;
      } gen7_typed_rw;

      /*! Memory fence */
      struct {
        uint32_t bti:8;
        uint32_t pad:5;
        uint32_t commit_enable:1;
        uint32_t msg_type:4;
        uint32_t pad2:1;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad3:2;
        uint32_t end_of_thread:1;
      } gen7_memory_fence;

      /*! atomic messages */
      struct {
        uint32_t bti:8;
        uint32_t aop_type:4;
        uint32_t simd_mode:1;
        uint32_t return_data:1;
        uint32_t msg_type:4;
        uint32_t category:1;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad3:2;
        uint32_t end_of_thread:1;
      } gen7_atomic_op;

      /*! Message gateway */
      struct {
        uint32_t subfunc:3;
        uint32_t pad:11;
        uint32_t ackreq:1;
        uint32_t notify:2;
        uint32_t pad2:2;
        uint32_t header_present:1;
        uint32_t response_length:5;
        uint32_t msg_length:4;
        uint32_t pad3:2;
        uint32_t end_of_thread:1;
      } gen7_msg_gw;

      struct {
        uint32_t jip:32;
      } gen8_branch;

      int d;
      uint32_t ud;
      float f;
    } bits3;
  };
};

#endif /* __GEN_DEFS_HPP__ */

