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# SPDX-License-Identifier: MIT
################################################################################
import pytest

from Tensile.SolutionStructs.LdsPadding import (
    get_fp4_mt_config,
    get_fp8_mt_config,
    get_fp16_mt_config,
    get_fp32_mt_config,
    get_mxs_mt_config,
)


# FP4
#   MT=32  from [16,16,128,1,1,1,1,2,2]
#   MT=64  from [16,16,128,1,1,2,2,2,2]
#   MT=128 from [16,16,128,1,1,4,4,2,2]
#   MT=256 from [16,16,128,1,1,8,8,2,2]
@pytest.mark.parametrize(
    "mt, miWaveTile, miWaveGroup, perBlock, pad, shift",
    [
        ( 32, 1, 2,  512, 16, 0),
        ( 64, 2, 2, 1024, 16, 4),
        (128, 4, 2,  128, 16, 0),
        (256, 8, 2,  256, 24, 4),
    ],
)
def test_fp4(mt, miWaveTile, miWaveGroup, perBlock, pad, shift):
    assert get_fp4_mt_config(mt, "perBlock", miWaveTile, miWaveGroup) == perBlock
    assert get_fp4_mt_config(mt, "pad",      miWaveTile, miWaveGroup) == pad
    assert get_fp4_mt_config(mt, "shift",    miWaveTile, miWaveGroup) == shift


# FP8
# Yaml shapes:
#   MT=32  from [16,16,128,1,1,1,1,2,2]
#   MT=64  from [16,16,128,1,1,2,2,2,2]
#   MT=128 from [16,16,128,1,1,4,4,2,2]
#   MT=256 from [16,16,128,1,1,8,8,2,2]
@pytest.mark.parametrize(
    "mt, miWaveTile, miWaveGroup, perBlock, pad, shift",
    [
        ( 32, 1, 2, 256,  8, 0),
        ( 64, 2, 2, 128, 16, 0),
        (128, 4, 2, 128,  8, 4),
        (256, 8, 2, 128,  8, 4),
    ],
)
def test_fp8(mt, miWaveTile, miWaveGroup, perBlock, pad, shift):
    assert get_fp8_mt_config(mt, "perBlock", miWaveTile, miWaveGroup) == perBlock
    assert get_fp8_mt_config(mt, "pad",      miWaveTile, miWaveGroup) == pad
    assert get_fp8_mt_config(mt, "shift",    miWaveTile, miWaveGroup) == shift


# FP16 / BF16
#   MT=16  from [16,16,32,1,1,1,1,1,1]
#   MT=32  from [16,16,32,1,1,1,1,2,2]
#   MT=64  from [16,16,32,1,1,2,2,2,2]
#   MT=256 from [16,16,32,1,1,8,8,2,2]
@pytest.mark.parametrize(
    "mt, miWaveGroup, miWaveTile, perBlock, pad",
    [
        ( 16, 1, 1,   0, 0),
        ( 32, 2, 1,  32, 8),
        ( 64, 2, 2,  64, 8),
        (256, 2, 8, 256, 8),
    ],
)
def test_fp16(mt, miWaveGroup, miWaveTile, perBlock, pad):
    assert get_fp16_mt_config(mt, "perBlock", miWaveGroup, 16, 8, miWaveTile, 1) == perBlock
    assert get_fp16_mt_config(mt, "pad",      miWaveGroup, 16, 8, miWaveTile, 1) == pad


# FP32
#   MT=32  from [16,16,4,1,1,1,1,2,2]
#   MT=64  from [16,16,4,1,1,2,2,2,2]
#   MT=128 from [16,16,4,1,1,4,4,2,2]
#   MT=256 from [16,16,4,1,1,8,8,2,2]
@pytest.mark.parametrize(
    "mt, vw, lrvw, miWaveGroup, miInputPerThread, miWaveTile, perBlock, pad",
    [
        ( 32, 1, 2, 2, 2, 1,  256, 16),
        ( 64, 2, 2, 2, 2, 2,  512,  1),
        (128, 4, 2, 2, 2, 4, 1024,  1),
        (256, 4, 2, 2, 2, 8, 1024,  1),
    ],
)
def test_fp32(mt, vw, lrvw, miWaveGroup, miInputPerThread, miWaveTile,
              perBlock, pad):
    assert get_fp32_mt_config(mt, "perBlock", vw, lrvw, miWaveGroup,
                              miInputPerThread, miWaveTile,
                              xf32EmuPack=False) == perBlock
    assert get_fp32_mt_config(mt, "pad", vw, lrvw, miWaveGroup,
                              miInputPerThread, miWaveTile,
                              xf32EmuPack=False) == pad


# XF32 (xf32EmuPack=True)
#   MT=32  from [16,16,32,1,1,1,1,2,2]
#   MT=64  from [16,16,32,1,1,2,2,2,2]
#   MT=128 from [16,16,32,1,1,4,4,2,2]
#   MT=256 from [16,16,32,1,1,8,8,2,2]   (solver rejects: VGPR > 1024)
@pytest.mark.parametrize(
    "mt, vw, lrvw, miWaveGroup, miInputPerThread, miWaveTile, perBlock, pad",
    [
        ( 32, 1, 4, 2, 16, 1,  512, 16),
        ( 64, 2, 4, 2, 16, 2, 1024,  1),
        (128, 2, 4, 2, 16, 4, 1024, 16),
    ],
)
def test_xf32(mt, vw, lrvw, miWaveGroup, miInputPerThread, miWaveTile,
              perBlock, pad):
    assert get_fp32_mt_config(mt, "perBlock", vw, lrvw, miWaveGroup,
                              miInputPerThread, miWaveTile,
                              xf32EmuPack=True) == perBlock
    assert get_fp32_mt_config(mt, "pad", vw, lrvw, miWaveGroup,
                              miInputPerThread, miWaveTile,
                              xf32EmuPack=True) == pad


# MX
@pytest.mark.parametrize(
    "mxBlock, vw, perBlock, pad",
    [
        (32,  8, 256, 16),  # mxBlock=32: needs vw multiple of 8
        (16,  4, 256, 16),  # mxBlock=16: needs vw multiple of 4
        (32,  4,   0,  0),  # d/16 odd -> no padding
        (32,  1,   0,  0),  # vw < 4 -> no padding
        (16,  1,   0,  0),  # vw < 4 -> no padding
    ],
)
def test_mxs(mxBlock, vw, perBlock, pad):
    assert get_mxs_mt_config(128, mxBlock, vw, "perBlock") == perBlock
    assert get_mxs_mt_config(128, mxBlock, vw, "pad")      == pad