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/*
* Copyright © 2017 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.
*/
#include "brw_reg.h"
#include "brw_eu_defines.h"
#include "common/gen_device_info.h"
#define INVALID (-1)
static const struct {
enum hw_reg_type reg_type;
enum hw_imm_type imm_type;
} gen4_hw_type[] = {
[BRW_REGISTER_TYPE_DF] = { GEN7_HW_REG_TYPE_DF, GEN8_HW_IMM_TYPE_DF },
[BRW_REGISTER_TYPE_F] = { BRW_HW_REG_TYPE_F, BRW_HW_IMM_TYPE_F },
[BRW_REGISTER_TYPE_HF] = { GEN8_HW_REG_TYPE_HF, GEN8_HW_IMM_TYPE_HF },
[BRW_REGISTER_TYPE_VF] = { INVALID, BRW_HW_IMM_TYPE_VF },
[BRW_REGISTER_TYPE_Q] = { GEN8_HW_REG_TYPE_Q, GEN8_HW_IMM_TYPE_Q },
[BRW_REGISTER_TYPE_UQ] = { GEN8_HW_REG_TYPE_UQ, GEN8_HW_IMM_TYPE_UQ },
[BRW_REGISTER_TYPE_D] = { BRW_HW_REG_TYPE_D, BRW_HW_IMM_TYPE_D },
[BRW_REGISTER_TYPE_UD] = { BRW_HW_REG_TYPE_UD, BRW_HW_IMM_TYPE_UD },
[BRW_REGISTER_TYPE_W] = { BRW_HW_REG_TYPE_W, BRW_HW_IMM_TYPE_W },
[BRW_REGISTER_TYPE_UW] = { BRW_HW_REG_TYPE_UW, BRW_HW_IMM_TYPE_UW },
[BRW_REGISTER_TYPE_B] = { BRW_HW_REG_TYPE_B, INVALID },
[BRW_REGISTER_TYPE_UB] = { BRW_HW_REG_TYPE_UB, INVALID },
[BRW_REGISTER_TYPE_V] = { INVALID, BRW_HW_IMM_TYPE_V },
[BRW_REGISTER_TYPE_UV] = { INVALID, BRW_HW_IMM_TYPE_UV },
};
/**
* Convert a brw_reg_type enumeration value into the hardware representation.
*
* The hardware encoding may depend on whether the value is an immediate.
*/
unsigned
brw_reg_type_to_hw_type(const struct gen_device_info *devinfo,
enum brw_reg_file file,
enum brw_reg_type type)
{
assert(type < ARRAY_SIZE(gen4_hw_type));
if (file == BRW_IMMEDIATE_VALUE) {
assert(gen4_hw_type[type].imm_type != (enum hw_imm_type)INVALID);
return gen4_hw_type[type].imm_type;
} else {
assert(gen4_hw_type[type].reg_type != (enum hw_reg_type)INVALID);
return gen4_hw_type[type].reg_type;
}
}
/**
* Convert the hardware representation into a brw_reg_type enumeration value.
*
* The hardware encoding may depend on whether the value is an immediate.
*/
enum brw_reg_type
brw_hw_type_to_reg_type(const struct gen_device_info *devinfo,
enum brw_reg_file file, unsigned hw_type)
{
if (file == BRW_IMMEDIATE_VALUE) {
for (enum brw_reg_type i = 0; i <= BRW_REGISTER_TYPE_LAST; i++) {
if (gen4_hw_type[i].imm_type == hw_type) {
return i;
}
}
} else {
for (enum brw_reg_type i = 0; i <= BRW_REGISTER_TYPE_LAST; i++) {
if (gen4_hw_type[i].reg_type == hw_type) {
return i;
}
}
}
unreachable("not reached");
}
/**
* Return the element size given a hardware register type and file.
*
* The hardware encoding may depend on whether the value is an immediate.
*/
unsigned
brw_hw_reg_type_to_size(const struct gen_device_info *devinfo,
enum brw_reg_file file,
unsigned hw_type)
{
static const unsigned type_size[] = {
[BRW_REGISTER_TYPE_DF] = 8,
[BRW_REGISTER_TYPE_F] = 4,
[BRW_REGISTER_TYPE_HF] = 2,
[BRW_REGISTER_TYPE_VF] = 4,
[BRW_REGISTER_TYPE_Q] = 8,
[BRW_REGISTER_TYPE_UQ] = 8,
[BRW_REGISTER_TYPE_D] = 4,
[BRW_REGISTER_TYPE_UD] = 4,
[BRW_REGISTER_TYPE_W] = 2,
[BRW_REGISTER_TYPE_UW] = 2,
[BRW_REGISTER_TYPE_B] = 1,
[BRW_REGISTER_TYPE_UB] = 1,
[BRW_REGISTER_TYPE_V] = 2,
[BRW_REGISTER_TYPE_UV] = 2,
};
enum brw_reg_type type = brw_hw_type_to_reg_type(devinfo, file, hw_type);
return type_size[type];
}
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