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/*
* Copyright © 2012 Intel Corporation
*
* 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 AUTHORS OR COPYRIGHT HOLDERS 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.
*/
/**
* @file gen8_instruction.h
*
* A representation of a Gen8+ EU instruction, with helper methods to get
* and set various fields. This is the actual hardware format.
*/
#ifndef GEN8_INSTRUCTION_H
#define GEN8_INSTRUCTION_H
#include <stdio.h>
#include <stdint.h>
#include "brw_context.h"
#include "brw_reg.h"
#ifdef __cplusplus
extern "C" {
#endif
struct gen8_instruction {
uint32_t data[4];
};
static inline unsigned gen8_instruction_bits(struct gen8_instruction *inst,
unsigned high,
unsigned low);
static inline void gen8_instruction_set_bits(struct gen8_instruction *inst,
unsigned high,
unsigned low,
unsigned value);
#define F(name, high, low) \
static inline void gen8_set_##name(struct gen8_instruction *inst, unsigned v) \
{ \
gen8_instruction_set_bits(inst, high, low, v); \
} \
static inline unsigned gen8_##name(struct gen8_instruction *inst) \
{ \
return gen8_instruction_bits(inst, high, low); \
}
F(src1_vert_stride, 120, 117)
F(src1_da1_width, 116, 114)
F(src1_da16_swiz_w, 115, 114)
F(src1_da16_swiz_z, 113, 112)
F(src1_da1_hstride, 113, 112)
F(src1_address_mode, 111, 111)
/** Src1.SrcMod @{ */
F(src1_negate, 110, 110)
F(src1_abs, 109, 109)
/** @} */
F(src1_ia1_subreg_nr, 108, 105)
F(src1_da_reg_nr, 108, 101)
F(src1_da16_subreg_nr, 100, 100)
F(src1_da1_subreg_nr, 100, 96)
F(src1_da16_swiz_y, 99, 98)
F(src1_da16_swiz_x, 97, 96)
F(src1_reg_type, 94, 91)
F(src1_reg_file, 90, 89)
F(src0_vert_stride, 88, 85)
F(src0_da1_width, 84, 82)
F(src0_da16_swiz_w, 83, 82)
F(src0_da16_swiz_z, 81, 80)
F(src0_da1_hstride, 81, 80)
F(src0_address_mode, 79, 79)
/** Src0.SrcMod @{ */
F(src0_negate, 78, 78)
F(src0_abs, 77, 77)
/** @} */
F(src0_ia1_subreg_nr, 76, 73)
F(src0_da_reg_nr, 76, 69)
F(src0_da16_subreg_nr, 68, 68)
F(src0_da1_subreg_nr, 68, 64)
F(src0_da16_swiz_y, 67, 66)
F(src0_da16_swiz_x, 65, 64)
F(dst_address_mode, 63, 63)
F(dst_da1_hstride, 62, 61)
F(dst_ia1_subreg_nr, 60, 57)
F(dst_da_reg_nr, 60, 53)
F(dst_da16_subreg_nr, 52, 52)
F(dst_da1_subreg_nr, 52, 48)
F(da16_writemask, 51, 48) /* Dst.ChanEn */
F(src0_reg_type, 46, 43)
F(src0_reg_file, 42, 41)
F(dst_reg_type, 40, 37)
F(dst_reg_file, 36, 35)
F(mask_control, 34, 34)
F(flag_reg_nr, 33, 33)
F(flag_subreg_nr, 32, 32)
F(saturate, 31, 31)
F(branch_control, 30, 30)
F(debug_control, 30, 30)
F(cmpt_control, 29, 29)
F(acc_wr_control, 28, 28)
F(cond_modifier, 27, 24)
F(exec_size, 23, 21)
F(pred_inv, 20, 20)
F(pred_control, 19, 16)
F(thread_control, 15, 14)
F(qtr_control, 13, 12)
F(nib_control, 11, 11)
F(no_dd_check, 10, 10)
F(no_dd_clear, 9, 9)
F(access_mode, 8, 8)
/* Bit 7 is Reserved (for future Opcode expansion) */
F(opcode, 6, 0)
/**
* Three-source instructions:
* @{
*/
F(src2_3src_reg_nr, 125, 118)
F(src2_3src_subreg_nr, 117, 115)
F(src2_3src_swizzle, 114, 107)
F(src2_3src_rep_ctrl, 106, 106)
F(src1_3src_reg_nr, 104, 97)
/* src1_3src_subreg_nr spans word boundaries and has to be handled specially */
F(src1_3src_swizzle, 93, 86)
F(src1_3src_rep_ctrl, 85, 85)
F(src0_3src_reg_nr, 83, 76)
F(src0_3src_subreg_nr, 75, 73)
F(src0_3src_swizzle, 72, 65)
F(src0_3src_rep_ctrl, 64, 64)
F(dst_3src_reg_nr, 63, 56)
F(dst_3src_subreg_nr, 55, 53)
F(dst_3src_writemask, 52, 49)
F(dst_3src_type, 48, 46)
F(src_3src_type, 45, 43)
F(src2_3src_negate, 42, 42)
F(src2_3src_abs, 41, 41)
F(src1_3src_negate, 40, 40)
F(src1_3src_abs, 39, 39)
F(src0_3src_negate, 38, 38)
F(src0_3src_abs, 37, 37)
/** @} */
/**
* Fields for SEND messages:
* @{
*/
F(eot, 127, 127)
F(mlen, 124, 121)
F(rlen, 120, 116)
F(header_present, 115, 115)
F(function_control, 114, 96)
F(sfid, 27, 24)
F(math_function, 27, 24)
/** @} */
/**
* URB message function control bits:
* @{
*/
F(urb_per_slot_offset, 113, 113)
F(urb_interleave, 111, 111)
F(urb_global_offset, 110, 100)
F(urb_opcode, 99, 96)
/** @} */
/* Message descriptor bits */
#define MD(name, high, low) F(name, (high + 96), (low + 96))
/**
* Sampler message function control bits:
* @{
*/
MD(sampler_simd_mode, 18, 17)
MD(sampler_msg_type, 16, 12)
MD(sampler, 11, 8)
MD(binding_table_index, 7, 0) /* also used by other messages */
/** @} */
/**
* Data port message function control bits:
* @{
*/
MD(dp_category, 18, 18)
MD(dp_message_type, 17, 14)
MD(dp_message_control, 13, 8)
/** @} */
/**
* Render Target message function control bits:
* @{
*/
MD(rt_last, 12, 12)
MD(rt_slot_group, 11, 11)
MD(rt_message_type, 10, 8)
/** @} */
/**
* Thread Spawn message function control bits:
* @{
*/
MD(ts_resource_select, 4, 4)
MD(ts_request_type, 1, 1)
MD(ts_opcode, 0, 0)
/** @} */
/**
* Video Motion Estimation message function control bits:
* @{
*/
F(vme_message_type, 14, 13)
/** @} */
/**
* Check & Refinement Engine message function control bits:
* @{
*/
F(cre_message_type, 14, 13)
/** @} */
#undef MD
#undef F
static inline void
gen8_set_src1_3src_subreg_nr(struct gen8_instruction *inst, unsigned v)
{
assert((v & ~0x7) == 0);
gen8_instruction_set_bits(inst, 95, 94, v & 0x3);
gen8_instruction_set_bits(inst, 96, 96, v >> 2);
}
static inline unsigned
gen8_src1_3src_subreg_nr(struct gen8_instruction *inst)
{
return gen8_instruction_bits(inst, 95, 94) |
(gen8_instruction_bits(inst, 96, 96) << 2);
}
#define GEN8_IA1_ADDR_IMM(reg, nine, high, low) \
static inline void \
gen8_set_##reg##_ia1_addr_imm(struct gen8_instruction *inst, unsigned value) \
{ \
assert((value & ~0x3ff) == 0); \
gen8_instruction_set_bits(inst, high, low, value & 0x1ff); \
gen8_instruction_set_bits(inst, nine, nine, value >> 9); \
} \
\
static inline unsigned \
gen8_##reg##_ia1_addr_imm(struct gen8_instruction *inst) \
{ \
return gen8_instruction_bits(inst, high, low) | \
(gen8_instruction_bits(inst, nine, nine) << 9); \
}
/* AddrImm[9:0] for Align1 Indirect Addressing */
GEN8_IA1_ADDR_IMM(src1, 121, 104, 96)
GEN8_IA1_ADDR_IMM(src0, 95, 72, 64)
GEN8_IA1_ADDR_IMM(dst, 47, 56, 48)
/**
* Flow control instruction bits:
* @{
*/
static inline unsigned gen8_uip(struct gen8_instruction *inst)
{
return inst->data[2];
}
static inline void gen8_set_uip(struct gen8_instruction *inst, unsigned uip)
{
inst->data[2] = uip;
}
static inline unsigned gen8_jip(struct gen8_instruction *inst)
{
return inst->data[3];
}
static inline void gen8_set_jip(struct gen8_instruction *inst, unsigned jip)
{
inst->data[3] = jip;
}
/** @} */
static inline int gen8_src1_imm_d(struct gen8_instruction *inst)
{
return inst->data[3];
}
static inline unsigned gen8_src1_imm_ud(struct gen8_instruction *inst)
{
return inst->data[3];
}
static inline float gen8_src1_imm_f(struct gen8_instruction *inst)
{
fi_type ft;
ft.u = inst->data[3];
return ft.f;
}
void gen8_set_dst(const struct brw_context *brw,
struct gen8_instruction *inst, struct brw_reg reg);
void gen8_set_src0(const struct brw_context *brw,
struct gen8_instruction *inst, struct brw_reg reg);
void gen8_set_src1(const struct brw_context *brw,
struct gen8_instruction *inst, struct brw_reg reg);
void gen8_set_urb_message(const struct brw_context *brw,
struct gen8_instruction *inst,
enum brw_urb_write_flags flags,
unsigned mlen, unsigned rlen,
unsigned offset, bool interleave);
void gen8_set_sampler_message(const struct brw_context *brw,
struct gen8_instruction *inst,
unsigned binding_table_index, unsigned sampler,
unsigned msg_type, unsigned rlen, unsigned mlen,
bool header_present, unsigned simd_mode);
void gen8_set_dp_message(const struct brw_context *brw,
struct gen8_instruction *inst,
enum brw_message_target sfid,
unsigned binding_table_index,
unsigned msg_type,
unsigned msg_control,
unsigned msg_length,
unsigned response_length,
bool header_present,
bool end_of_thread);
/** Disassemble the instruction. */
int gen8_disassemble(FILE *file, struct gen8_instruction *inst, int gen);
/**
* Fetch a set of contiguous bits from the instruction.
*
* Bits indexes range from 0..127; fields may not cross 32-bit boundaries.
*/
static inline unsigned
gen8_instruction_bits(struct gen8_instruction *inst, unsigned high, unsigned low)
{
/* We assume the field doesn't cross 32-bit boundaries. */
const unsigned word = high / 32;
assert(word == low / 32);
high %= 32;
low %= 32;
const unsigned mask = (((1 << (high - low + 1)) - 1) << low);
return (inst->data[word] & mask) >> low;
}
/**
* Set bits in the instruction, with proper shifting and masking.
*
* Bits indexes range from 0..127; fields may not cross 32-bit boundaries.
*/
static inline void
gen8_instruction_set_bits(struct gen8_instruction *inst,
unsigned high,
unsigned low,
unsigned value)
{
const unsigned word = high / 32;
assert(word == low / 32);
high %= 32;
low %= 32;
const unsigned mask = (((1 << (high - low + 1)) - 1) << low);
/* Make sure the supplied value actually fits in the given bitfield. */
assert((value & (mask >> low)) == value);
inst->data[word] = (inst->data[word] & ~mask) | ((value << low) & mask);
}
#ifdef __cplusplus
}
#endif
#endif
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