// SPDX-License-Identifier: MIT
// Copyright (c) 2018-2022, Advanced Micro Devices, Inc. All rights reserved.

#pragma once

#include <iostream>
#include <sstream>

#include "ck/utility/common_header.hpp"
#include "ck/tensor_description/tensor_descriptor.hpp"
#include "ck/tensor_description/tensor_descriptor_helper.hpp"
#include "ck/tensor_operation/gpu/device/tensor_layout.hpp"
#include "ck/tensor_operation/gpu/device/device_gemm.hpp"
#include "ck/tensor_operation/gpu/device/gemm_specialization.hpp"
#include "ck/tensor_operation/gpu/grid/gridwise_gemm_xdl_layernorm_cshuffle_v1.hpp"
#include "ck/host_utility/device_prop.hpp"
#include "ck/host_utility/kernel_launch.hpp"

namespace ck {
namespace tensor_operation {
namespace device {

// The GEMM + Layernorm implementation is a specialized kernel which allows fusing both layers
// together given the condition GEMM extents N of MNK is spanned by a single workgroup. For example,
// a kernel configured with NPerBlock = 128 allows to operate on all GEMM sizes if N <= 128
//
// Note: inter-wave loop scheduler is rolled out to c-shuffle version first. Becuase non c-shuffle
// version currently has compiler issues with register spill which further causes validation
// failures.
//
// D = Layernorm(acc_element_op(A * B + broadcast(bias)) + add) * broadcast(gamma) + broadcast(beta)
template <typename ALayout,
          typename BLayout,
          typename CLayout,
          typename ADataType,
          typename BDataType,
          typename CDataType,
          typename C0DataType,
          typename GemmAccDataType,
          typename CShuffleDataType,
          typename ReduceAccDataType,
          typename AElementwiseOperation,
          typename BElementwiseOperation,
          typename AccElementwiseOperation,
          typename CElementwiseOperation,
          GemmSpecialization GemmSpec,
          index_t NumGemmKPrefetchStage,
          index_t BlockSize,
          index_t MPerBlock,
          index_t NPerBlock,
          index_t KPerBlock,
          index_t AK1,
          index_t BK1,
          index_t MPerXDL,
          index_t NPerXDL,
          index_t MXdlPerWave,
          index_t NXdlPerWave,
          typename ABlockTransferThreadClusterLengths_AK0_M_AK1,
          typename ABlockTransferThreadClusterArrangeOrder,
          typename ABlockTransferSrcAccessOrder,
          index_t ABlockTransferSrcVectorDim,
          index_t ABlockTransferSrcScalarPerVector,
          index_t ABlockTransferDstScalarPerVector_AK1,
          bool ABlockLdsExtraM,
          typename BBlockTransferThreadClusterLengths_BK0_N_BK1,
          typename BBlockTransferThreadClusterArrangeOrder,
          typename BBlockTransferSrcAccessOrder,
          index_t BBlockTransferSrcVectorDim,
          index_t BBlockTransferSrcScalarPerVector,
          index_t BBlockTransferDstScalarPerVector_BK1,
          bool BBlockLdsExtraN,
          index_t CShuffleMXdlPerWavePerShuffle,
          index_t CShuffleNXdlPerWavePerShuffle,
          typename CShuffleBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
          index_t CShuffleBlockTransferScalarPerVector_NPerBlock,
          typename CReduceThreadClusterLengths_MPerBlock_NPerBlock,
          index_t CReduceThreadCopySrcDstScalarPerVector_NPerBlock,
          LoopScheduler LoopSched = make_default_loop_scheduler()>
struct DeviceGemmLayerNorm_Xdl_CShuffle : public BaseOperator
{
    using DeviceOp = DeviceGemmLayerNorm_Xdl_CShuffle;

    static constexpr auto I0 = Number<0>{};
    static constexpr auto I1 = Number<1>{};
    static constexpr auto I2 = Number<2>{};

    static auto MakeAGridDescriptor_AK0_M_AK1(index_t MRaw, index_t KRaw, index_t StrideA)
    {
        const auto a_grid_desc_mraw_kraw = [&]() {
            if constexpr(is_same_v<tensor_layout::gemm::RowMajor, ALayout>)
            {
                return make_naive_tensor_descriptor(make_tuple(MRaw, KRaw),
                                                    make_tuple(StrideA, I1));
            }
            else if constexpr(is_same_v<tensor_layout::gemm::ColumnMajor, ALayout>)
            {
                return make_naive_tensor_descriptor(make_tuple(MRaw, KRaw),
                                                    make_tuple(I1, StrideA));
            }
        }();

        const auto M = math::integer_divide_ceil(MRaw, MPerBlock) * MPerBlock;
        const auto K = math::integer_divide_ceil(KRaw, KPerBlock) * KPerBlock;

        const auto MPad = M - MRaw;
        const auto KPad = K - KRaw;

        if constexpr(GemmSpec == GemmSpecialization::MKPadding ||
                     GemmSpec == GemmSpecialization::MNKPadding)
        {
            // pad both M and K
            assert(K % AK1 == 0);

            const auto AK0 = K / AK1;

            const auto a_grid_desc_m_k =
                transform_tensor_descriptor(a_grid_desc_mraw_kraw,
                                            make_tuple(make_right_pad_transform(MRaw, MPad),
                                                       make_right_pad_transform(KRaw, KPad)),
                                            make_tuple(Sequence<0>{}, Sequence<1>{}),
                                            make_tuple(Sequence<0>{}, Sequence<1>{}));

            const auto a_grid_desc_ak0_m_ak1 =
                transform_tensor_descriptor(a_grid_desc_m_k,
                                            make_tuple(make_unmerge_transform(make_tuple(AK0, AK1)),
                                                       make_pass_through_transform(M)),
                                            make_tuple(Sequence<1>{}, Sequence<0>{}),
                                            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));

            return a_grid_desc_ak0_m_ak1;
        }
        else if constexpr(GemmSpec == GemmSpecialization::MPadding ||
                          GemmSpec == GemmSpecialization::MNPadding)
        {
            // pad M, but not K
            assert(KRaw % AK1 == 0);

            const auto AK0 = KRaw / AK1;

            const auto a_grid_desc_ak0_m_ak1 =
                transform_tensor_descriptor(a_grid_desc_mraw_kraw,
                                            make_tuple(make_unmerge_transform(make_tuple(AK0, AK1)),
                                                       make_right_pad_transform(MRaw, MPad)),
                                            make_tuple(Sequence<1>{}, Sequence<0>{}),
                                            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));

            return a_grid_desc_ak0_m_ak1;
        }
        else if constexpr(GemmSpec == GemmSpecialization::KPadding ||
                          GemmSpec == GemmSpecialization::NKPadding)
        {
            // pad K, but not M
            assert(K % AK1 == 0);

            const auto AK0 = K / AK1;

            const auto a_grid_desc_m_k = transform_tensor_descriptor(
                a_grid_desc_mraw_kraw,
                make_tuple(make_pass_through_transform(MRaw), make_right_pad_transform(KRaw, KPad)),
                make_tuple(Sequence<0>{}, Sequence<1>{}),
                make_tuple(Sequence<0>{}, Sequence<1>{}));

            const auto a_grid_desc_ak0_m_ak1 =
                transform_tensor_descriptor(a_grid_desc_m_k,
                                            make_tuple(make_unmerge_transform(make_tuple(AK0, AK1)),
                                                       make_pass_through_transform(MRaw)),
                                            make_tuple(Sequence<1>{}, Sequence<0>{}),
                                            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));

            return a_grid_desc_ak0_m_ak1;
        }
        else
        {
            // not pad M or K
            assert(KRaw % AK1 == 0);

            const auto AK0 = KRaw / AK1;

            const auto a_grid_desc_ak0_m_ak1 =
                transform_tensor_descriptor(a_grid_desc_mraw_kraw,
                                            make_tuple(make_unmerge_transform(make_tuple(AK0, AK1)),
                                                       make_pass_through_transform(MRaw)),
                                            make_tuple(Sequence<1>{}, Sequence<0>{}),
                                            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));

            return a_grid_desc_ak0_m_ak1;
        }
    }

    static auto MakeBGridDescriptor_BK0_N_BK1(index_t KRaw, index_t NRaw, index_t StrideB)
    {
        const auto b_grid_desc_nraw_kraw = [&]() {
            if constexpr(is_same<tensor_layout::gemm::RowMajor, BLayout>::value)
            {
                return make_naive_tensor_descriptor(make_tuple(NRaw, KRaw),
                                                    make_tuple(I1, StrideB));
            }
            else if constexpr(is_same<tensor_layout::gemm::ColumnMajor, BLayout>::value)
            {
                return make_naive_tensor_descriptor(make_tuple(NRaw, KRaw),
                                                    make_tuple(StrideB, I1));
            }
        }();

        const auto N = math::integer_divide_ceil(NRaw, NPerBlock) * NPerBlock;
        const auto K = math::integer_divide_ceil(KRaw, KPerBlock) * KPerBlock;

        const auto NPad = N - NRaw;
        const auto KPad = K - KRaw;

        if constexpr(GemmSpec == GemmSpecialization::NKPadding ||
                     GemmSpec == GemmSpecialization::MNKPadding)
        {
            // pad both N and K
            assert(K % BK1 == 0);

            const auto BK0 = K / BK1;

            const auto b_grid_desc_n_k =
                transform_tensor_descriptor(b_grid_desc_nraw_kraw,
                                            make_tuple(make_right_pad_transform(NRaw, NPad),
                                                       make_right_pad_transform(KRaw, KPad)),
                                            make_tuple(Sequence<0>{}, Sequence<1>{}),
                                            make_tuple(Sequence<0>{}, Sequence<1>{}));

            const auto b_grid_desc_bk0_n_bk1 =
                transform_tensor_descriptor(b_grid_desc_n_k,
                                            make_tuple(make_unmerge_transform(make_tuple(BK0, BK1)),
                                                       make_pass_through_transform(N)),
                                            make_tuple(Sequence<1>{}, Sequence<0>{}),
                                            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));

            return b_grid_desc_bk0_n_bk1;
        }
        else if constexpr(GemmSpec == GemmSpecialization::NPadding ||
                          GemmSpec == GemmSpecialization::MNPadding)
        {
            // pad N, but not K
            assert(KRaw % BK1 == 0);

            const auto BK0 = KRaw / BK1;

            const auto b_grid_desc_bk0_n_bk1 =
                transform_tensor_descriptor(b_grid_desc_nraw_kraw,
                                            make_tuple(make_unmerge_transform(make_tuple(BK0, BK1)),
                                                       make_right_pad_transform(NRaw, NPad)),
                                            make_tuple(Sequence<1>{}, Sequence<0>{}),
                                            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));

            return b_grid_desc_bk0_n_bk1;
        }
        else if constexpr(GemmSpec == GemmSpecialization::KPadding ||
                          GemmSpec == GemmSpecialization::MKPadding)
        {
            // pad K, but not N
            assert(K % BK1 == 0);

            const auto BK0 = K / BK1;

            const auto b_grid_desc_n_k = transform_tensor_descriptor(
                b_grid_desc_nraw_kraw,
                make_tuple(make_pass_through_transform(NRaw), make_right_pad_transform(KRaw, KPad)),
                make_tuple(Sequence<0>{}, Sequence<1>{}),
                make_tuple(Sequence<0>{}, Sequence<1>{}));

            const auto b_grid_desc_bk0_n_bk1 =
                transform_tensor_descriptor(b_grid_desc_n_k,
                                            make_tuple(make_unmerge_transform(make_tuple(BK0, BK1)),
                                                       make_pass_through_transform(NRaw)),
                                            make_tuple(Sequence<1>{}, Sequence<0>{}),
                                            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));

            return b_grid_desc_bk0_n_bk1;
        }
        else
        {
            // not pad N or K
            assert(KRaw % BK1 == 0);

            const auto BK0 = KRaw / BK1;

            const auto b_grid_desc_bk0_n_bk1 =
                transform_tensor_descriptor(b_grid_desc_nraw_kraw,
                                            make_tuple(make_unmerge_transform(make_tuple(BK0, BK1)),
                                                       make_pass_through_transform(NRaw)),
                                            make_tuple(Sequence<1>{}, Sequence<0>{}),
                                            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));

            return b_grid_desc_bk0_n_bk1;
        }
    }

    static auto MakeCGridDescriptor_M_N(index_t MRaw, index_t NRaw, index_t StrideC)
    {
        const auto c_grid_desc_mraw_nraw = [&]() {
            if constexpr(is_same<tensor_layout::gemm::RowMajor, CLayout>::value)
            {
                return make_naive_tensor_descriptor(make_tuple(MRaw, NRaw),
                                                    make_tuple(StrideC, I1));
            }
            else if constexpr(is_same<tensor_layout::gemm::ColumnMajor, CLayout>::value)
            {
                return make_naive_tensor_descriptor(make_tuple(MRaw, NRaw),
                                                    make_tuple(I1, StrideC));
            }
        }();

        const auto M = math::integer_divide_ceil(MRaw, MPerBlock) * MPerBlock;
        const auto N = math::integer_divide_ceil(NRaw, NPerBlock) * NPerBlock;

        const auto MPad = M - MRaw;
        const auto NPad = N - NRaw;

        if constexpr(GemmSpec == GemmSpecialization::MNPadding ||
                     GemmSpec == GemmSpecialization::MNKPadding)
        {
            // pad M and N
            return transform_tensor_descriptor(c_grid_desc_mraw_nraw,
                                               make_tuple(make_right_pad_transform(MRaw, MPad),
                                                          make_right_pad_transform(NRaw, NPad)),
                                               make_tuple(Sequence<0>{}, Sequence<1>{}),
                                               make_tuple(Sequence<0>{}, Sequence<1>{}));
        }
        else if constexpr(GemmSpec == GemmSpecialization::MPadding ||
                          GemmSpec == GemmSpecialization::MKPadding)
        {
            // pad M, but not N
            return transform_tensor_descriptor(
                c_grid_desc_mraw_nraw,
                make_tuple(make_right_pad_transform(MRaw, MPad), make_pass_through_transform(NRaw)),
                make_tuple(Sequence<0>{}, Sequence<1>{}),
                make_tuple(Sequence<0>{}, Sequence<1>{}));
        }
        else if constexpr(GemmSpec == GemmSpecialization::NPadding ||
                          GemmSpec == GemmSpecialization::NKPadding)
        {
            // pad N, but not M
            return transform_tensor_descriptor(
                c_grid_desc_mraw_nraw,
                make_tuple(make_pass_through_transform(MRaw), make_right_pad_transform(NRaw, NPad)),
                make_tuple(Sequence<0>{}, Sequence<1>{}),
                make_tuple(Sequence<0>{}, Sequence<1>{}));
        }
        else
        {
            // not pad M or N
            return c_grid_desc_mraw_nraw;
        }
    }

    static auto MakeGridDescriptor_N(index_t NRaw)
    {
        const auto grid_desc_nraw = make_naive_tensor_descriptor_packed(make_tuple(NRaw));

        const auto N    = math::integer_divide_ceil(NRaw, NPerBlock) * NPerBlock;
        const auto NPad = N - NRaw;

        if constexpr(GemmSpec == GemmSpecialization::NPadding ||
                     GemmSpec == GemmSpecialization::MNPadding ||
                     GemmSpec == GemmSpecialization::NKPadding ||
                     GemmSpec == GemmSpecialization::MNKPadding)
        {
            // pad N
            return transform_tensor_descriptor(grid_desc_nraw,
                                               make_tuple(make_right_pad_transform(NRaw, NPad)),
                                               make_tuple(Sequence<0>{}),
                                               make_tuple(Sequence<0>{}));
        }
        else
        {
            // not pad N
            return grid_desc_nraw;
        }
    }

    using AGridDesc_AK0_M_AK1 = decltype(MakeAGridDescriptor_AK0_M_AK1(1, 1, 1));
    using BGridDesc_BK0_N_BK1 = decltype(MakeBGridDescriptor_BK0_N_BK1(1, 1, 1));
    using CGridDesc_M_N       = decltype(MakeCGridDescriptor_M_N(1, 1, 1));
    using C0GridDesc_N        = decltype(MakeGridDescriptor_N(1));

    // GridwiseGemm
    using GridwiseGemm = GridwiseGemmLayernorm_k0mk1_k0nk1_mn_xdl_cshuffle_v1<
        ADataType, // TODO: distinguish A/B datatype
        GemmAccDataType,
        CShuffleDataType,
        CDataType,
        C0DataType,
        ReduceAccDataType,
        AElementwiseOperation,
        BElementwiseOperation,
        AccElementwiseOperation,
        CElementwiseOperation,
        InMemoryDataOperationEnum::Set,
        AGridDesc_AK0_M_AK1,
        BGridDesc_BK0_N_BK1,
        CGridDesc_M_N,
        C0GridDesc_N,
        NumGemmKPrefetchStage,
        BlockSize,
        MPerBlock,
        NPerBlock,
        KPerBlock,
        AK1,
        BK1,
        MPerXDL,
        NPerXDL,
        MXdlPerWave,
        NXdlPerWave,
        ABlockTransferThreadClusterLengths_AK0_M_AK1,
        ABlockTransferThreadClusterArrangeOrder,
        ABlockTransferSrcAccessOrder,
        ABlockTransferSrcVectorDim,
        ABlockTransferSrcScalarPerVector,
        ABlockTransferDstScalarPerVector_AK1,
        false,
        ABlockLdsExtraM,
        BBlockTransferThreadClusterLengths_BK0_N_BK1,
        BBlockTransferThreadClusterArrangeOrder,
        BBlockTransferSrcAccessOrder,
        BBlockTransferSrcVectorDim,
        BBlockTransferSrcScalarPerVector,
        BBlockTransferDstScalarPerVector_BK1,
        false,
        BBlockLdsExtraN,
        CShuffleMXdlPerWavePerShuffle,
        CShuffleNXdlPerWavePerShuffle,
        CShuffleBlockTransferClusterLengths_MBlock_MPerBlock_NBlock_NPerBlock,
        CShuffleBlockTransferScalarPerVector_NPerBlock,
        CReduceThreadClusterLengths_MPerBlock_NPerBlock,
        CReduceThreadCopySrcDstScalarPerVector_NPerBlock,
        LoopSched>;

    using Block2CTileMap = typename GridwiseGemm::DefaultBlock2CTileMap;

    // Argument
    struct Argument : public BaseArgument
    {
        Argument(const ADataType* p_a_grid,
                 const BDataType* p_b_grid,
                 CDataType* p_c_grid,
                 const C0DataType* p_c0_grid_add,
                 const C0DataType* p_c0_grid_bias,
                 const C0DataType* p_c0_grid_gamma,
                 const C0DataType* p_c0_grid_beta,
                 index_t MRaw,
                 index_t NRaw,
                 index_t KRaw,
                 index_t StrideA,
                 index_t StrideB,
                 index_t StrideC,
                 AElementwiseOperation a_element_op,
                 BElementwiseOperation b_element_op,
                 AccElementwiseOperation acc_element_op,
                 CElementwiseOperation c_element_op)
            : p_a_grid_{p_a_grid},
              p_b_grid_{p_b_grid},
              p_c_grid_{p_c_grid},
              p_c0_grid_bias_{p_c0_grid_bias},
              p_c0_grid_add_{p_c0_grid_add},
              p_c0_grid_gamma_{p_c0_grid_gamma},
              p_c0_grid_beta_{p_c0_grid_beta},
              a_grid_desc_ak0_m_ak1_{DeviceOp::MakeAGridDescriptor_AK0_M_AK1(MRaw, KRaw, StrideA)},
              b_grid_desc_bk0_n_bk1_{DeviceOp::MakeBGridDescriptor_BK0_N_BK1(KRaw, NRaw, StrideB)},
              c_grid_desc_m_n_{DeviceOp::MakeCGridDescriptor_M_N(MRaw, NRaw, StrideC)},
              c0_grid_desc_n_{MakeGridDescriptor_N(NRaw)},
              c_grid_desc_mblock_mperblock_nblock_nperblock_{},
              c0_grid_desc_nblock_nperblock_{},
              block_2_ctile_map_{Block2CTileMap(c_grid_desc_m_n_)},
              a_element_op_{a_element_op},
              b_element_op_{b_element_op},
              acc_element_op_{acc_element_op},
              c_element_op_{c_element_op}
        {
            if(GridwiseGemm::CheckValidity(a_grid_desc_ak0_m_ak1_,
                                           b_grid_desc_bk0_n_bk1_,
                                           c_grid_desc_m_n_,
                                           block_2_ctile_map_))
            {
                c_grid_desc_mblock_mperblock_nblock_nperblock_ =
                    GridwiseGemm::MakeCGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock(
                        c_grid_desc_m_n_);

                c0_grid_desc_nblock_nperblock_ =
                    GridwiseGemm::MakeC0GridDescriptor_NBlock_NPerBlock(c0_grid_desc_n_);
            }
        }

        //  private:
        const ADataType* p_a_grid_;
        const BDataType* p_b_grid_;
        CDataType* p_c_grid_;
        const C0DataType* p_c0_grid_bias_;
        const C0DataType* p_c0_grid_add_;
        const C0DataType* p_c0_grid_gamma_;
        const C0DataType* p_c0_grid_beta_;
        AGridDesc_AK0_M_AK1 a_grid_desc_ak0_m_ak1_;
        BGridDesc_BK0_N_BK1 b_grid_desc_bk0_n_bk1_;
        CGridDesc_M_N c_grid_desc_m_n_;
        C0GridDesc_N c0_grid_desc_n_;
        typename GridwiseGemm::CGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock
            c_grid_desc_mblock_mperblock_nblock_nperblock_;
        typename GridwiseGemm::C0GridDescriptor_NBlock_NPerBlock c0_grid_desc_nblock_nperblock_;
        Block2CTileMap block_2_ctile_map_;
        AElementwiseOperation a_element_op_;
        BElementwiseOperation b_element_op_;
        AccElementwiseOperation acc_element_op_;
        CElementwiseOperation c_element_op_;
    };

    // Invoker
    struct Invoker : public BaseInvoker
    {
        using Argument = DeviceOp::Argument;

        float Run(const Argument& arg, const StreamConfig& stream_config = StreamConfig{})
        {
#if DEBUG_LOG
            {
                std::cout << "arg.a_grid_desc_ak0_m_ak1_{"
                          << arg.a_grid_desc_ak0_m_ak1_.GetLength(I0) << ", "
                          << arg.a_grid_desc_ak0_m_ak1_.GetLength(I1) << ", "
                          << arg.a_grid_desc_ak0_m_ak1_.GetLength(I2) << "}" << std::endl;

                std::cout << "arg.b_grid_desc_bk0_n_bk1_{"
                          << arg.b_grid_desc_bk0_n_bk1_.GetLength(I0) << ", "
                          << arg.b_grid_desc_bk0_n_bk1_.GetLength(I1) << ", "
                          << arg.b_grid_desc_bk0_n_bk1_.GetLength(I2) << "}" << std::endl;

                std::cout << "arg.c_grid_desc_m_n_{ " << arg.c_grid_desc_m_n_.GetLength(I0) << ", "
                          << arg.c_grid_desc_m_n_.GetLength(I1) << "}" << std::endl;
            }
#endif

            if(!GridwiseGemm::CheckValidity(arg.a_grid_desc_ak0_m_ak1_,
                                            arg.b_grid_desc_bk0_n_bk1_,
                                            arg.c_grid_desc_m_n_,
                                            arg.block_2_ctile_map_))
            {
                throw std::runtime_error("wrong! GridwiseGemm has invalid setting");
            }

            const index_t grid_size =
                arg.block_2_ctile_map_.CalculateGridSize(arg.c_grid_desc_m_n_);

            const auto K =
                arg.a_grid_desc_ak0_m_ak1_.GetLength(I0) * arg.a_grid_desc_ak0_m_ak1_.GetLength(I2);

            float ave_time = 0;

            if(GridwiseGemm::CalculateHasMainKBlockLoop(K))
            {
                const auto kernel = kernel_gemm_layernorm_xdl_cshuffle_v1<
                    GridwiseGemm,
                    ADataType, // TODO: distiguish A/B datatype
                    CDataType,
                    C0DataType,
                    AElementwiseOperation,
                    BElementwiseOperation,
                    AccElementwiseOperation,
                    CElementwiseOperation,
                    DeviceOp::AGridDesc_AK0_M_AK1,
                    DeviceOp::BGridDesc_BK0_N_BK1,
                    typename GridwiseGemm::CGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock,
                    typename GridwiseGemm::C0GridDescriptor_NBlock_NPerBlock,
                    Block2CTileMap,
                    true>;

                ave_time =
                    launch_and_time_kernel(stream_config,
                                           kernel,
                                           dim3(grid_size),
                                           dim3(BlockSize),
                                           0,
                                           arg.p_a_grid_,
                                           arg.p_b_grid_,
                                           arg.p_c_grid_,
                                           arg.p_c0_grid_bias_,
                                           arg.p_c0_grid_add_,
                                           arg.p_c0_grid_gamma_,
                                           arg.p_c0_grid_beta_,
                                           arg.a_element_op_,
                                           arg.b_element_op_,
                                           arg.acc_element_op_,
                                           arg.c_element_op_,
                                           arg.a_grid_desc_ak0_m_ak1_,
                                           arg.b_grid_desc_bk0_n_bk1_,
                                           arg.c_grid_desc_mblock_mperblock_nblock_nperblock_,
                                           arg.c0_grid_desc_nblock_nperblock_,
                                           arg.block_2_ctile_map_);
            }
            else
            {
                const auto kernel = kernel_gemm_layernorm_xdl_cshuffle_v1<
                    GridwiseGemm,
                    ADataType, // TODO: distiguish A/B datatype
                    CDataType,
                    C0DataType,
                    AElementwiseOperation,
                    BElementwiseOperation,
                    AccElementwiseOperation,
                    CElementwiseOperation,
                    DeviceOp::AGridDesc_AK0_M_AK1,
                    DeviceOp::BGridDesc_BK0_N_BK1,
                    typename GridwiseGemm::CGridDescriptor_MBlock_MPerBlock_NBlock_NPerBlock,
                    typename GridwiseGemm::C0GridDescriptor_NBlock_NPerBlock,
                    Block2CTileMap,
                    false>;
                ave_time =
                    launch_and_time_kernel(stream_config,
                                           kernel,
                                           dim3(grid_size),
                                           dim3(BlockSize),
                                           0,
                                           arg.p_a_grid_,
                                           arg.p_b_grid_,
                                           arg.p_c_grid_,
                                           arg.p_c0_grid_bias_,
                                           arg.p_c0_grid_add_,
                                           arg.p_c0_grid_gamma_,
                                           arg.p_c0_grid_beta_,
                                           arg.a_element_op_,
                                           arg.b_element_op_,
                                           arg.acc_element_op_,
                                           arg.c_element_op_,
                                           arg.a_grid_desc_ak0_m_ak1_,
                                           arg.b_grid_desc_bk0_n_bk1_,
                                           arg.c_grid_desc_mblock_mperblock_nblock_nperblock_,
                                           arg.c0_grid_desc_nblock_nperblock_,
                                           arg.block_2_ctile_map_);
            }

            return ave_time;
        }

        // polymorphic
        float Run(const BaseArgument* p_arg,
                  const StreamConfig& stream_config = StreamConfig{}) override
        {
            return Run(*dynamic_cast<const Argument*>(p_arg), stream_config);
        }
    };

    static constexpr bool IsValidCompilationParameter()
    {
        // TODO: properly implement this check
        return true;
    }

    static bool IsSupportedArgument(const Argument& arg)
    {
        if(!(ck::get_device_name() == "gfx908" || ck::get_device_name() == "gfx90a"))
        {
            return false;
        }

        return GridwiseGemm::CheckValidity(arg.a_grid_desc_ak0_m_ak1_,
                                           arg.b_grid_desc_bk0_n_bk1_,
                                           arg.c_grid_desc_m_n_,
                                           arg.block_2_ctile_map_);
    }

    // polymorphic
    bool IsSupportedArgument(const BaseArgument* p_arg) override
    {
        return IsSupportedArgument(*dynamic_cast<const Argument*>(p_arg));
    }

    static auto MakeArgument(const ADataType* p_a,
                             const BDataType* p_b,
                             CDataType* p_c,
                             const C0DataType* p_c0_bias,
                             const C0DataType* p_c0_add,
                             const C0DataType* p_c0_gamma,
                             const C0DataType* p_c0_beta,
                             index_t MRaw,
                             index_t NRaw,
                             index_t KRaw,
                             index_t StrideA,
                             index_t StrideB,
                             index_t StrideC,
                             AElementwiseOperation a_element_op,
                             BElementwiseOperation b_element_op,
                             AccElementwiseOperation acc_element_op,
                             CElementwiseOperation c_element_op)
    {
        return Argument{p_a,
                        p_b,
                        p_c,
                        p_c0_bias,
                        p_c0_add,
                        p_c0_gamma,
                        p_c0_beta,
                        MRaw,
                        NRaw,
                        KRaw,
                        StrideA,
                        StrideB,
                        StrideC,
                        a_element_op,
                        b_element_op,
                        acc_element_op,
                        c_element_op};
    }

    static auto MakeInvoker() { return Invoker{}; }

    std::unique_ptr<BaseArgument> MakeArgumentPointer(const void* p_a,
                                                      const void* p_b,
                                                      void* p_c,
                                                      const void* p_c0_bias,
                                                      const void* p_c0_add,
                                                      const void* p_c0_gamma,
                                                      const void* p_c0_beta,
                                                      index_t MRaw,
                                                      index_t NRaw,
                                                      index_t KRaw,
                                                      index_t StrideA,
                                                      index_t StrideB,
                                                      index_t StrideC,
                                                      AElementwiseOperation a_element_op,
                                                      BElementwiseOperation b_element_op,
                                                      AccElementwiseOperation acc_element_op,
                                                      CElementwiseOperation c_element_op,
                                                      index_t /* KBatch */ = 1)
    {
        return std::make_unique<Argument>(static_cast<const ADataType*>(p_a),
                                          static_cast<const BDataType*>(p_b),
                                          static_cast<CDataType*>(p_c),
                                          static_cast<const C0DataType*>(p_c0_bias),
                                          static_cast<const C0DataType*>(p_c0_add),
                                          static_cast<const C0DataType*>(p_c0_gamma),
                                          static_cast<const C0DataType*>(p_c0_beta),
                                          MRaw,
                                          NRaw,
                                          KRaw,
                                          StrideA,
                                          StrideB,
                                          StrideC,
                                          a_element_op,
                                          b_element_op,
                                          acc_element_op,
                                          c_element_op);
    }

    std::unique_ptr<BaseInvoker> MakeInvokerPointer()
    {
        return std::make_unique<Invoker>(Invoker{});
    }

    // polymorphic
    std::string GetTypeString() const override
    {
        auto str = std::stringstream();

        // clang-format off
        str << "DeviceGemmLayerNorm_Xdl_CShuffle"
            << "<"
            << BlockSize << ", "
            << MPerBlock << ", "
            << NPerBlock << ", "
            << KPerBlock << ", "
            << AK1 << ", "
            << BK1
            << ">";
        // clang-format on

        return str.str();
    }
};

} // namespace device
} // namespace tensor_operation
} // namespace ck
