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

#pragma once

#include <functional>
#include <iostream>
#include <iterator>
#include <numeric>
#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/convolution_forward_specialization.hpp"
#include "ck/tensor_operation/operator_transform/transform_conv_fwd_to_gemm.hpp"
#include "ck/tensor_operation/gpu/device/device_grouped_conv_fwd.hpp"
#include "ck/tensor_operation/gpu/device/gemm_specialization.hpp"
#include "ck/tensor_operation/gpu/device/matrix_padder.hpp"
#include "ck/tensor_operation/gpu/grid/gridwise_gemm_dl_v1r3.hpp"
#include "ck/host_utility/device_prop.hpp"
#include "ck/host_utility/kernel_launch.hpp"
#include "ck/host_utility/io.hpp"

namespace ck {
namespace tensor_operation {
namespace device {

namespace {

struct ComputePtrOffsetOfStridedBatch
{
    ComputePtrOffsetOfStridedBatch(index_t BatchStrideA, index_t BatchStrideB, index_t BatchStrideC)
        : BatchStrideA_(BatchStrideA), BatchStrideB_(BatchStrideB), BatchStrideC_(BatchStrideC)
    {
    }

    __host__ __device__ constexpr long_index_t GetAPtrOffset(index_t g_idx) const
    {
        return g_idx * static_cast<long_index_t>(BatchStrideA_);
    }

    __host__ __device__ constexpr long_index_t GetBPtrOffset(index_t g_idx) const
    {
        return g_idx * static_cast<long_index_t>(BatchStrideB_);
    }

    __host__ __device__ constexpr long_index_t GetCPtrOffset(index_t g_idx) const
    {
        return g_idx * static_cast<long_index_t>(BatchStrideC_);
    }

    index_t BatchStrideA_;
    index_t BatchStrideB_;
    index_t BatchStrideC_;
};

/*
 * \brief Wrapper function of GridwiseGemm::Run to realize BatchedGEMM.
 *
 * \tparam ComputePtrOffsetOfBatch Class that computes the base pointer offsets of A, B, C matrix
 * given the batch. For example, ComputePtrOffsetOfStridedBatch() computes the offsets of evenly
 * strided batched, but we can easily extend to other layouts. The returned offset can be either \p
 * index_t or \p long_index_t. If it returns \p long_index_t, we are not subject to the 2GB
 * limitations.
 *
 * \tparam Block2ETileMap Block2ETileMap::CalculateBottomIndex() takes in id of a workgroup and
 * returns the 2D index of the tile that it computes. \see
 * GridwiseGemm_k0mk1_k0nk1_mn_xdlops_v2r3::Run().
 *
 * \note Using \p ComputePtrOffsetOfBatch gives us the flexibility that 2 workgroups can compute 2
 * tiles from different matrices. Keep in mind that these 2 matrices can share the same grid
 * descriptor (like in BatchedGEMM), or use their own grid descriptors (in GroupedGemm). \link
 * device_conv3d_fwd_xdl_ndhwc_kzyxc_ndhwk.hpp kernel_gemm_xdlops_v2r3_for_conv3d \endlink for \link
 * DeviceConv3d \endlink uses the same concept, but currently does NOT encapsulate the computing of
 * pointer offset into \p ComputePtrOffsetOfStridedBatch.
 *
 * \note \p Block2ETileMap allows customized mapping between a workgroup and the C-tile it computes.
 * Together with \p ComputePtrOffsetOfBatch, we can reuse GridwiseGemm (and GridwiseGemm fusion ) to
 * realize BatchedGemm and GroupedGemm (and the corresponding GEMM fusion).
 *
 */
template <typename GridwiseGemm,
          typename ABDataType,
          typename CDataType,
          typename AGridDesc_K0_M0_M1_K1,
          typename BGridDesc_K0_N0_N1_K1,
          typename CGridDesc_M0_M10_M11_N0_N10_N11,
          typename Block2CTileMap,
          typename ComputePtrOffsetOfBatch,
          bool HasMainKBlockLoop,
          bool HasDoubleTailKBlockLoop>
__global__ void
#if CK_USE_LAUNCH_BOUNDS
    __launch_bounds__(CK_MAX_THREAD_PER_BLOCK, CK_MIN_BLOCK_PER_CU)
#endif
        kernel_grouped_conv_fwd_dl(
            const ABDataType* __restrict__ p_a_grid,
            const ABDataType* __restrict__ p_b_grid,
            CDataType* __restrict__ p_c_grid,
            const index_t batch_count,
            const AGridDesc_K0_M0_M1_K1 a_grid_desc_k0_m0_m1_k1,
            const BGridDesc_K0_N0_N1_K1 b_grid_desc_k0_n0_n1_k1,
            const CGridDesc_M0_M10_M11_N0_N10_N11 c_grid_desc_m0_m10_m11_n0_n10_n11,
            const Block2CTileMap block_2_ctile_map,
            const ComputePtrOffsetOfBatch compute_ptr_offset_of_batch)
{
#if(!defined(__HIP_DEVICE_COMPILE__) || defined(__gfx906__) || defined(__gfx1030__))
    // offset base pointer for each work-group
    const index_t num_blocks_per_batch =
        __builtin_amdgcn_readfirstlane(get_grid_size() / batch_count);
    const index_t g_idx = __builtin_amdgcn_readfirstlane(get_block_1d_id() / num_blocks_per_batch);

    const long_index_t a_batch_offset = __builtin_amdgcn_readfirstlane(
        static_cast<long_index_t>(compute_ptr_offset_of_batch.GetAPtrOffset(g_idx)));
    const long_index_t b_batch_offset = __builtin_amdgcn_readfirstlane(
        static_cast<long_index_t>(compute_ptr_offset_of_batch.GetBPtrOffset(g_idx)));
    const long_index_t c_batch_offset = __builtin_amdgcn_readfirstlane(
        static_cast<long_index_t>(compute_ptr_offset_of_batch.GetCPtrOffset(g_idx)));

    constexpr index_t shared_block_size =
        GridwiseGemm::GetSharedMemoryNumberOfByte() / sizeof(ABDataType);

    __shared__ ABDataType p_shared[shared_block_size];

    GridwiseGemm::Run(p_a_grid + a_batch_offset,
                      p_b_grid + b_batch_offset,
                      p_c_grid + c_batch_offset,
                      p_shared,
                      a_grid_desc_k0_m0_m1_k1,
                      b_grid_desc_k0_n0_n1_k1,
                      c_grid_desc_m0_m10_m11_n0_n10_n11,
                      block_2_ctile_map,
                      integral_constant<bool, HasMainKBlockLoop>{},
                      integral_constant<bool, HasDoubleTailKBlockLoop>{});
#else
    ignore = p_a_grid;
    ignore = p_b_grid;
    ignore = p_c_grid;
    ignore = batch_count;
    ignore = a_grid_desc_k0_m0_m1_k1;
    ignore = b_grid_desc_k0_n0_n1_k1;
    ignore = c_grid_desc_m0_m10_m11_n0_n10_n11;
    ignore = compute_ptr_offset_of_batch;
    ignore = block_2_ctile_map;

    compute_ptr_offset_of_batch.GetAPtrOffset(0);
    compute_ptr_offset_of_batch.GetBPtrOffset(0);
    compute_ptr_offset_of_batch.GetCPtrOffset(0);
#endif
}

} // namespace

//
// @brief      Device Convolution operation.
//
// Supports:
//  @li         Forward convolution with up to 3 spatial dimentions
//  @li         Input tensor in GNWC data format
//  @li         Weight tensor in GKXC data format
//  @li         Output tensor in GNWK data format
//
// 1D:
// out[N, Wo, K] = in[N, Wi, C] * wei[K, X, C]
// 2D:
// out[N, Ho, Wo, K] = in[N, Hi, Wi, C] * wei[K, Y, X, C]
// 3D:
// out[N, Do, Ho, Wo, K] = in[N, Di, Hi, Wi, C] * wei[K, Z, Y, X, C]
//
template <
    index_t NDimSpatial,
    typename ADataType,
    typename BDataType,
    typename CDataType,
    typename AccDataType,
    typename ALayout,
    typename BLayout,
    typename CLayout,
    typename AElementwiseOperation,
    typename BElementwiseOperation,
    typename CElementwiseOperation,
    ConvolutionForwardSpecialization ConvForwardSpecialization,
    GemmSpecialization GemmSpec,
    index_t BlockSize,
    index_t MPerBlock,
    index_t NPerBlock,
    index_t K0PerBlock,
    index_t K1,
    index_t M1PerThread,
    index_t N1PerThread,
    index_t KPerThread,
    typename M1N1ThreadClusterM1Xs,
    typename M1N1ThreadClusterN1Xs,
    typename ABlockTransferThreadSliceLengths_K0_M0_M1_K1,
    typename ABlockTransferThreadClusterLengths_K0_M0_M1_K1,
    typename ABlockTransferThreadClusterArrangeOrder,
    typename ABlockTransferSrcAccessOrder,
    typename ABlockTransferSrcVectorTensorLengths_K0_M0_M1_K1,
    typename ABlockTransferSrcVectorTensorContiguousDimOrder,
    typename ABlockTransferDstVectorTensorLengths_K0_M0_M1_K1,
    typename BBlockTransferThreadSliceLengths_K0_N0_N1_K1,
    typename BBlockTransferThreadClusterLengths_K0_N0_N1_K1,
    typename BBlockTransferThreadClusterArrangeOrder,
    typename BBlockTransferSrcAccessOrder,
    typename BBlockTransferSrcVectorTensorLengths_K0_N0_N1_K1,
    typename BBlockTransferSrcVectorTensorContiguousDimOrder,
    typename BBlockTransferDstVectorTensorLengths_K0_N0_N1_K1,
    typename CThreadTransferSrcDstAccessOrder,
    index_t CThreadTransferSrcDstVectorDim,
    index_t CThreadTransferDstScalarPerVector,
    enable_if_t<
        is_same_v<AElementwiseOperation, ck::tensor_operation::element_wise::PassThrough> &&
            is_same_v<BElementwiseOperation, ck::tensor_operation::element_wise::PassThrough> &&
            is_same_v<CElementwiseOperation, ck::tensor_operation::element_wise::PassThrough>,
        bool> = false>
struct DeviceGroupedConvFwdDl_NHWC_KYXC_NHWK : public DeviceGroupedConvFwd<NDimSpatial,
                                                                           ALayout,
                                                                           BLayout,
                                                                           CLayout,
                                                                           ADataType,
                                                                           BDataType,
                                                                           CDataType,
                                                                           AElementwiseOperation,
                                                                           BElementwiseOperation,
                                                                           CElementwiseOperation>
{
    using DeviceOp = DeviceGroupedConvFwdDl_NHWC_KYXC_NHWK;

    static constexpr auto I0 = Number<0>{};
    static constexpr auto I1 = Number<1>{};
    static constexpr auto I2 = Number<2>{};
    static constexpr auto I3 = Number<3>{};

    static constexpr auto conv_to_gemm_transformer =
        TransformConvFwdToGemm<NDimSpatial, ConvForwardSpecialization>{};

    static constexpr auto matrix_padder =
        MatrixPadder<GemmSpec, index_t, index_t, index_t>{MPerBlock, NPerBlock, K0PerBlock};

    template <typename ALay>
    static auto
    MakeAGridDescriptor_AK0_M_AK1(const std::array<index_t, NDimSpatial + 3>& a_g_n_c_wis_lengths,
                                  const std::array<index_t, NDimSpatial + 3>& a_g_n_c_wis_strides,
                                  const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_lengths,
                                  const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_strides,
                                  const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_lengths,
                                  const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_strides,
                                  const std::array<index_t, NDimSpatial>& conv_filter_strides,
                                  const std::array<index_t, NDimSpatial>& conv_filter_dilations,
                                  const std::array<index_t, NDimSpatial>& input_left_pads,
                                  const std::array<index_t, NDimSpatial>& input_right_pads)
    {
        const auto in_gemmmraw_gemmkraw_desc =
            conv_to_gemm_transformer.template MakeADescriptor_M_K<ALay>(a_g_n_c_wis_lengths,
                                                                        a_g_n_c_wis_strides,
                                                                        b_g_k_c_xs_lengths,
                                                                        b_g_k_c_xs_strides,
                                                                        c_g_n_k_wos_lengths,
                                                                        c_g_n_k_wos_strides,
                                                                        conv_filter_strides,
                                                                        conv_filter_dilations,
                                                                        input_left_pads,
                                                                        input_right_pads);

        const auto in_gemmm_gemmk_desc =
            matrix_padder.PadADescriptor_M_K(in_gemmmraw_gemmkraw_desc);

        const auto M = in_gemmm_gemmk_desc.GetLength(I0);
        const auto K = in_gemmm_gemmk_desc.GetLength(I1);

        const auto AK0 = K / K1;

        return transform_tensor_descriptor(
            in_gemmm_gemmk_desc,
            make_tuple(make_unmerge_transform(make_tuple(AK0, K1)), make_pass_through_transform(M)),
            make_tuple(Sequence<1>{}, Sequence<0>{}),
            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
    }

    template <typename BLay>
    static auto
    MakeBGridDescriptor_BK0_N_BK1(const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_lengths,
                                  const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_strides)
    {
        const auto wei_gemmnraw_gemmkraw_desc =
            conv_to_gemm_transformer.template MakeBDescriptor_N_K<BLay>(b_g_k_c_xs_lengths,
                                                                        b_g_k_c_xs_strides);

        const auto wei_gemmn_gemmk_desc =
            matrix_padder.PadBDescriptor_N_K(wei_gemmnraw_gemmkraw_desc);

        const auto N = wei_gemmn_gemmk_desc.GetLength(I0);
        const auto K = wei_gemmn_gemmk_desc.GetLength(I1);

        const auto BK0 = K / K1;

        return transform_tensor_descriptor(
            wei_gemmn_gemmk_desc,
            make_tuple(make_unmerge_transform(make_tuple(BK0, K1)), make_pass_through_transform(N)),
            make_tuple(Sequence<1>{}, Sequence<0>{}),
            make_tuple(Sequence<0, 2>{}, Sequence<1>{}));
    }

    template <typename CLay>
    static auto
    MakeCGridDescriptor_M_N(const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_lengths,
                            const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_strides)
    {
        const auto out_gemmmraw_gemmnraw_desc =
            conv_to_gemm_transformer.template MakeCDescriptor_M_N<CLay>(c_g_n_k_wos_lengths,
                                                                        c_g_n_k_wos_strides);

        const auto out_gemmm_gemmn_desc =
            matrix_padder.PadCDescriptor_M_N(out_gemmmraw_gemmnraw_desc);

        return out_gemmm_gemmn_desc;
    }

    // desc for problem definition
    using AGridDesc_AK0_M_AK1 = remove_cvref_t<decltype(
        MakeAGridDescriptor_AK0_M_AK1<ALayout>({}, {}, {}, {}, {}, {}, {}, {}, {}, {}))>;
    using BGridDesc_BK0_N_BK1 =
        remove_cvref_t<decltype(MakeBGridDescriptor_BK0_N_BK1<BLayout>({}, {}))>;
    using CGridDesc_M_N = remove_cvref_t<decltype(MakeCGridDescriptor_M_N<CLayout>({}, {}))>;

    // GridwiseGemm
    using GridwiseGemm =
        GridwiseGemmDl_km_kn_mn_v1r3<BlockSize,
                                     ADataType,
                                     AccDataType,
                                     CDataType,
                                     InMemoryDataOperationEnum::Set,
                                     AGridDesc_AK0_M_AK1,
                                     BGridDesc_BK0_N_BK1,
                                     CGridDesc_M_N,
                                     MPerBlock,
                                     NPerBlock,
                                     K0PerBlock,
                                     K1,
                                     M1PerThread,
                                     N1PerThread,
                                     KPerThread,
                                     M1N1ThreadClusterM1Xs,
                                     M1N1ThreadClusterN1Xs,
                                     ABlockTransferThreadSliceLengths_K0_M0_M1_K1,
                                     ABlockTransferThreadClusterLengths_K0_M0_M1_K1,
                                     ABlockTransferThreadClusterArrangeOrder,
                                     ABlockTransferSrcAccessOrder,
                                     ABlockTransferSrcVectorTensorLengths_K0_M0_M1_K1,
                                     ABlockTransferSrcVectorTensorContiguousDimOrder,
                                     ABlockTransferDstVectorTensorLengths_K0_M0_M1_K1,
                                     BBlockTransferThreadSliceLengths_K0_N0_N1_K1,
                                     BBlockTransferThreadClusterLengths_K0_N0_N1_K1,
                                     BBlockTransferThreadClusterArrangeOrder,
                                     BBlockTransferSrcAccessOrder,
                                     BBlockTransferSrcVectorTensorLengths_K0_N0_N1_K1,
                                     BBlockTransferSrcVectorTensorContiguousDimOrder,
                                     BBlockTransferDstVectorTensorLengths_K0_N0_N1_K1,
                                     CThreadTransferSrcDstAccessOrder,
                                     CThreadTransferSrcDstVectorDim,
                                     CThreadTransferDstScalarPerVector>;

    using AGridDesc_K0_M0_M1_K1 =
        decltype(GridwiseGemm::MakeAGridDescriptor_K0_M0_M1_K1(AGridDesc_AK0_M_AK1{}));
    using BGridDesc_K0_N0_N1_K1 =
        decltype(GridwiseGemm::MakeBGridDescriptor_K0_N0_N1_K1(BGridDesc_BK0_N_BK1{}));
    using CGridDesc_M0_M10_M11_N0_N10_N11 =
        decltype(GridwiseGemm::MakeCGridDescriptor_M0_M10_M11_N0_N10_N11(CGridDesc_M_N{}));
    using DefaultBlock2CTileMap =
        decltype(GridwiseGemm::MakeDefaultBlock2CTileMap(CGridDesc_M_N{}));

    // Argument
    struct Argument : public BaseArgument
    {
        Argument(const void* p_a,
                 const void* p_b,
                 void* p_c,
                 const std::array<index_t, NDimSpatial + 3>& a_g_n_c_wis_lengths,
                 const std::array<index_t, NDimSpatial + 3>& a_g_n_c_wis_strides,
                 const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_lengths,
                 const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_strides,
                 const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_lengths,
                 const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_strides,
                 const std::array<index_t, NDimSpatial>& conv_filter_strides,
                 const std::array<index_t, NDimSpatial>& conv_filter_dilations,
                 const std::array<index_t, NDimSpatial>& input_left_pads,
                 const std::array<index_t, NDimSpatial>& input_right_pads,
                 const AElementwiseOperation& a_element_op,
                 const BElementwiseOperation& b_element_op,
                 const CElementwiseOperation& c_element_op)
            : p_a_grid_{static_cast<const ADataType*>(p_a)},
              p_b_grid_{static_cast<const BDataType*>(p_b)},
              p_c_grid_{static_cast<CDataType*>(p_c)},
              num_group_{a_g_n_c_wis_lengths[0]},
              a_grid_desc_ak0_m_ak1_{
                  DeviceOp::MakeAGridDescriptor_AK0_M_AK1<ALayout>(a_g_n_c_wis_lengths,
                                                                   a_g_n_c_wis_strides,
                                                                   b_g_k_c_xs_lengths,
                                                                   b_g_k_c_xs_strides,
                                                                   c_g_n_k_wos_lengths,
                                                                   c_g_n_k_wos_strides,
                                                                   conv_filter_strides,
                                                                   conv_filter_dilations,
                                                                   input_left_pads,
                                                                   input_right_pads)},
              b_grid_desc_bk0_n_bk1_{DeviceOp::MakeBGridDescriptor_BK0_N_BK1<BLayout>(
                  b_g_k_c_xs_lengths, b_g_k_c_xs_strides)},
              c_grid_desc_m_n_{DeviceOp::MakeCGridDescriptor_M_N<CLayout>(c_g_n_k_wos_lengths,
                                                                          c_g_n_k_wos_strides)},
              a_grid_desc_k0_m0_m1_k1_{},
              b_grid_desc_k0_n0_n1_k1_{},
              c_grid_desc_m0_m10_m11_n0_n10_n11_{},
              block_2_ctile_map_{},
              compute_ptr_offset_of_batch_{
                  a_g_n_c_wis_strides[0], b_g_k_c_xs_strides[0], c_g_n_k_wos_strides[0]},
              a_element_op_{a_element_op},
              b_element_op_{b_element_op},
              c_element_op_{c_element_op},
              a_g_n_c_wis_lengths_{a_g_n_c_wis_lengths},
              a_g_n_c_wis_strides_{a_g_n_c_wis_strides},
              b_g_k_c_xs_lengths_{b_g_k_c_xs_lengths},
              b_g_k_c_xs_strides_{b_g_k_c_xs_strides},
              c_g_n_k_wos_lengths_{c_g_n_k_wos_lengths},
              c_g_n_k_wos_strides_{c_g_n_k_wos_strides},
              conv_filter_strides_{conv_filter_strides},
              conv_filter_dilations_{conv_filter_dilations},
              input_left_pads_{input_left_pads},
              input_right_pads_{input_right_pads}
        {
            // A/B/E Batch Stride
            compute_ptr_offset_of_batch_.BatchStrideA_ = a_g_n_c_wis_strides[0];
            compute_ptr_offset_of_batch_.BatchStrideB_ = b_g_k_c_xs_strides[0];
            compute_ptr_offset_of_batch_.BatchStrideC_ = c_g_n_k_wos_strides[0];

            // populate desc for Ds/E
            if(GridwiseGemm::CheckValidity(
                   a_grid_desc_ak0_m_ak1_, b_grid_desc_bk0_n_bk1_, c_grid_desc_m_n_))
            {

                a_grid_desc_k0_m0_m1_k1_ =
                    GridwiseGemm::MakeAGridDescriptor_K0_M0_M1_K1(a_grid_desc_ak0_m_ak1_);
                b_grid_desc_k0_n0_n1_k1_ =
                    GridwiseGemm::MakeBGridDescriptor_K0_N0_N1_K1(b_grid_desc_bk0_n_bk1_);
                c_grid_desc_m0_m10_m11_n0_n10_n11_ =
                    GridwiseGemm::MakeCGridDescriptor_M0_M10_M11_N0_N10_N11(c_grid_desc_m_n_);

                block_2_ctile_map_ = GridwiseGemm::MakeDefaultBlock2CTileMap(c_grid_desc_m_n_);
            }
        }

        void Print() const
        {
            std::cout << "A[K0, M, K1]: " << a_grid_desc_ak0_m_ak1_ << std::endl;
            std::cout << "B[K0, N, K1]: " << b_grid_desc_bk0_n_bk1_ << std::endl;
            std::cout << "C[M, N]: " << c_grid_desc_m_n_ << std::endl;
            std::cout << "num_group: " << num_group_ << std::endl;

            std::cout << "A[k0, m0, m1, k1]: " << a_grid_desc_k0_m0_m1_k1_ << std::endl;
            std::cout << "B[k0, n0, n1, k1]: " << b_grid_desc_k0_n0_n1_k1_ << std::endl;
            std::cout << "A[m0, m10, m11, n0, n10, n11]: " << c_grid_desc_m0_m10_m11_n0_n10_n11_
                      << std::endl;
        }

        //  private:
        // pointers
        const ADataType* p_a_grid_;
        const BDataType* p_b_grid_;
        CDataType* p_c_grid_;

        // tensor descriptors for problem definiton
        index_t num_group_;
        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_;

        // tensor descriptors for block/thread-wise copy
        AGridDesc_K0_M0_M1_K1 a_grid_desc_k0_m0_m1_k1_;
        BGridDesc_K0_N0_N1_K1 b_grid_desc_k0_n0_n1_k1_;
        CGridDesc_M0_M10_M11_N0_N10_N11 c_grid_desc_m0_m10_m11_n0_n10_n11_;

        // block-to-e-tile map
        DefaultBlock2CTileMap block_2_ctile_map_;

        // for computing batch offset
        ComputePtrOffsetOfStridedBatch compute_ptr_offset_of_batch_;

        // element-wise op
        AElementwiseOperation a_element_op_;
        BElementwiseOperation b_element_op_;
        CElementwiseOperation c_element_op_;

        // for checking IsSupportedArgument()
        std::array<index_t, NDimSpatial + 3> a_g_n_c_wis_lengths_;
        std::array<index_t, NDimSpatial + 3> a_g_n_c_wis_strides_;
        std::array<index_t, NDimSpatial + 3> b_g_k_c_xs_lengths_;
        std::array<index_t, NDimSpatial + 3> b_g_k_c_xs_strides_;
        std::array<index_t, NDimSpatial + 3> c_g_n_k_wos_lengths_;
        std::array<index_t, NDimSpatial + 3> c_g_n_k_wos_strides_;
        std::array<index_t, NDimSpatial> conv_filter_strides_;
        std::array<index_t, NDimSpatial> conv_filter_dilations_;
        std::array<index_t, NDimSpatial> input_left_pads_;
        std::array<index_t, NDimSpatial> input_right_pads_;
    };

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

        float Run(const Argument& arg, const StreamConfig& stream_config = StreamConfig{})
        {
            // if(stream_config.log_level_ > 0)
            {
                arg.Print();
            }

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

            const index_t grid_size =
                GridwiseGemm::CalculateGridSize(arg.c_grid_desc_m_n_.GetLength(I0),
                                                arg.c_grid_desc_m_n_.GetLength(I1)) *
                arg.num_group_;

            auto launch_kernel = [&](auto has_main_k_block_loop,
                                     auto has_double_tail_k_block_loop) {
                constexpr bool has_main_loop   = has_main_k_block_loop.value;
                constexpr bool has_double_loop = has_double_tail_k_block_loop;

                const auto kernel =
                    kernel_grouped_conv_fwd_dl<GridwiseGemm,
                                               ADataType, // TODO: distiguish A/B datatype
                                               CDataType,
                                               DeviceOp::AGridDesc_K0_M0_M1_K1,
                                               DeviceOp::BGridDesc_K0_N0_N1_K1,
                                               DeviceOp::CGridDesc_M0_M10_M11_N0_N10_N11,
                                               DefaultBlock2CTileMap,
                                               ComputePtrOffsetOfStridedBatch,
                                               has_main_loop,
                                               has_double_loop>;

                return 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.a_g_n_c_wis_lengths_[0], // Group count
                                              arg.a_grid_desc_k0_m0_m1_k1_,
                                              arg.b_grid_desc_k0_n0_n1_k1_,
                                              arg.c_grid_desc_m0_m10_m11_n0_n10_n11_,
                                              arg.block_2_ctile_map_,
                                              arg.compute_ptr_offset_of_batch_);
            };

            const auto K0                    = arg.a_grid_desc_k0_m0_m1_k1_.GetLength(I0);
            const bool has_main_k_block_loop = GridwiseGemm::CalculateHasMainKBlockLoop(K0);
            const bool has_double_tail_k_block_loop =
                GridwiseGemm::CalculateHasDoubleTailKBlockLoop(K0);

            if(has_main_k_block_loop && has_double_tail_k_block_loop)
            {
                return launch_kernel(integral_constant<bool, true>{},
                                     integral_constant<bool, true>{});
            }
            else if(has_main_k_block_loop && !has_double_tail_k_block_loop)
            {
                return launch_kernel(integral_constant<bool, true>{},
                                     integral_constant<bool, false>{});
            }
            else if(!has_main_k_block_loop && has_double_tail_k_block_loop)
            {
                return launch_kernel(integral_constant<bool, false>{},
                                     integral_constant<bool, true>{});
            }
            else
            {
                return launch_kernel(integral_constant<bool, false>{},
                                     integral_constant<bool, false>{});
            }
        }

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

    static bool IsSupportedArgument(const Argument& arg)
    {
        namespace ctc = tensor_layout::convolution;

        // check device
        if(!(ck::get_device_name() == "gfx906" || ck::get_device_name() == "gfx1030"))
        {
            return false;
        }

        // check ConvolutionForwardSpecialization
        if constexpr(ConvForwardSpecialization ==
                     ConvolutionForwardSpecialization::Filter1x1Stride1Pad0)
        {
            // check if it's 1x1, stride=1 conv
            for(index_t i = 0; i < NDimSpatial; ++i)
            {
                const index_t X          = arg.b_g_k_c_xs_lengths_[i + 3];
                const index_t ConvStride = arg.conv_filter_strides_[i];
                const index_t LeftPad    = arg.input_left_pads_[i];
                const index_t RightPad   = arg.input_right_pads_[i];

                if(!(X == 1 && ConvStride == 1 && LeftPad == 0 && RightPad == 0))
                {
                    std::cout << "Filter1x1Stride1Pad0 check: i = " << i << " X = " << X
                              << " ConvStride = " << ConvStride << " LeftPad = " << LeftPad
                              << " RightPad = " << RightPad << std::endl;
                    return false;
                }
            }
        }
        else if constexpr(ConvForwardSpecialization ==
                          ConvolutionForwardSpecialization::Filter1x1Pad0)
        {
            // check if it's 1x1 conv
            for(index_t i = 0; i < NDimSpatial; ++i)
            {
                const index_t X        = arg.b_g_k_c_xs_lengths_[i + 3];
                const index_t LeftPad  = arg.input_left_pads_[i];
                const index_t RightPad = arg.input_right_pads_[i];

                if(!(X == 1 && LeftPad == 0 && RightPad == 0))
                {
                    std::cout << "Filter1x1Stride1Pad0 check: i = " << i << " X = " << X
                              << " LeftPad = " << LeftPad << " RightPad = " << RightPad
                              << std::endl;
                    return false;
                }
            }
        }

        // check vector access of A
        // FIXME: layout
        if constexpr(is_same_v<ALayout, ctc::G_NW_C> || is_same_v<ALayout, ctc::G_NHW_C> ||
                     is_same_v<ALayout, ctc::G_NDHW_C> || is_same_v<ALayout, ctc::GNWC> ||
                     is_same_v<ALayout, ctc::GNHWC> || is_same_v<ALayout, ctc::GNDHWC> ||
                     is_same_v<ALayout, ctc::NWGC> || is_same_v<ALayout, ctc::NHWGC> ||
                     is_same_v<ALayout, ctc::NDHWGC>)
        {
            auto srcVectorLengths = ABlockTransferSrcVectorTensorLengths_K0_M0_M1_K1{};
            if(srcVectorLengths[I1] != 1 || srcVectorLengths[I2] != 1)
            {
                return false;
            }
            if(K1 % srcVectorLengths[I3] != 0 || K0PerBlock % srcVectorLengths[I0] != 0)
            {
                return false;
            }

            const index_t C = arg.a_g_n_c_wis_lengths_[2];

            if(C % (srcVectorLengths[I0] * srcVectorLengths[I3]) != 0)
            {
                return false;
            }
        }
        else
        {
            return false;
        }

        // check vector access of B
        // FIXME: layout
        if constexpr(is_same_v<BLayout, ctc::G_K_X_C> || is_same_v<BLayout, ctc::G_K_YX_C> ||
                     is_same_v<BLayout, ctc::G_K_ZYX_C> || is_same_v<BLayout, ctc::GKXC> ||
                     is_same_v<BLayout, ctc::GKYXC> || is_same_v<BLayout, ctc::GKZYXC> ||
                     is_same_v<BLayout, ctc::KXGC> || is_same_v<BLayout, ctc::KYXGC> ||
                     is_same_v<BLayout, ctc::KZYXGC>)

        {
            auto srcVectorLengths = BBlockTransferSrcVectorTensorLengths_K0_N0_N1_K1{};
            if(srcVectorLengths[I1] != 1 || srcVectorLengths[I2] != 1)
            {
                return false;
            }
            if(K1 % srcVectorLengths[I3] != 0 || K0PerBlock % srcVectorLengths[I0] != 0)
            {
                return false;
            }

            const index_t C = arg.b_g_k_c_xs_lengths_[2];

            if(C % (srcVectorLengths[I0] * srcVectorLengths[I3]) != 0)
            {
                return false;
            }
        }
        else
        {
            return false;
        }

        // check vector access of C
        if constexpr(is_same_v<CLayout, ctc::G_NW_K> || is_same_v<CLayout, ctc::G_NHW_K> ||
                     is_same_v<CLayout, ctc::G_NDHW_K> || is_same_v<CLayout, ctc::GNWK> ||
                     is_same_v<CLayout, ctc::GNHWK> || is_same_v<CLayout, ctc::GNDHWK> ||
                     is_same_v<CLayout, ctc::NWGK> || is_same_v<CLayout, ctc::NHWGK> ||
                     is_same_v<CLayout, ctc::NDHWGK>)
        {
            const index_t K = arg.c_g_n_k_wos_lengths_[2];

            if(!(K % CThreadTransferDstScalarPerVector == 0 && CThreadTransferSrcDstVectorDim == 5))
            {
                return false;
            }
        }
        else
        {
            return false;
        }
        // check Gridwise GEMM
        return GridwiseGemm::CheckValidity(
            arg.a_grid_desc_ak0_m_ak1_, arg.b_grid_desc_bk0_n_bk1_, arg.c_grid_desc_m_n_);
    }

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

    static auto MakeArgument(const void* p_a,
                             const void* p_b,
                             void* p_c,
                             const std::array<index_t, NDimSpatial + 3>& a_g_n_c_wis_lengths,
                             const std::array<index_t, NDimSpatial + 3>& a_g_n_c_wis_strides,
                             const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_lengths,
                             const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_strides,
                             const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_lengths,
                             const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_strides,
                             const std::array<index_t, NDimSpatial>& conv_filter_strides,
                             const std::array<index_t, NDimSpatial>& conv_filter_dilations,
                             const std::array<index_t, NDimSpatial>& input_left_pads,
                             const std::array<index_t, NDimSpatial>& input_right_pads,
                             const AElementwiseOperation& a_element_op,
                             const BElementwiseOperation& b_element_op,
                             const CElementwiseOperation& c_element_op)
    {
        return Argument{p_a,
                        p_b,
                        p_c,
                        a_g_n_c_wis_lengths,
                        a_g_n_c_wis_strides,
                        b_g_k_c_xs_lengths,
                        b_g_k_c_xs_strides,
                        c_g_n_k_wos_lengths,
                        c_g_n_k_wos_strides,
                        conv_filter_strides,
                        conv_filter_dilations,
                        input_left_pads,
                        input_right_pads,
                        a_element_op,
                        b_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 std::array<index_t, NDimSpatial + 3>& a_g_n_c_wis_lengths,
                        const std::array<index_t, NDimSpatial + 3>& a_g_n_c_wis_strides,
                        const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_lengths,
                        const std::array<index_t, NDimSpatial + 3>& b_g_k_c_xs_strides,
                        const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_lengths,
                        const std::array<index_t, NDimSpatial + 3>& c_g_n_k_wos_strides,
                        const std::array<index_t, NDimSpatial>& conv_filter_strides,
                        const std::array<index_t, NDimSpatial>& conv_filter_dilations,
                        const std::array<index_t, NDimSpatial>& input_left_pads,
                        const std::array<index_t, NDimSpatial>& input_right_pads,
                        const AElementwiseOperation& a_element_op,
                        const BElementwiseOperation& b_element_op,
                        const CElementwiseOperation& c_element_op) override
    {
        return std::make_unique<Argument>(p_a,
                                          p_b,
                                          p_c,
                                          a_g_n_c_wis_lengths,
                                          a_g_n_c_wis_strides,
                                          b_g_k_c_xs_lengths,
                                          b_g_k_c_xs_strides,
                                          c_g_n_k_wos_lengths,
                                          c_g_n_k_wos_strides,
                                          conv_filter_strides,
                                          conv_filter_dilations,
                                          input_left_pads,
                                          input_right_pads,
                                          a_element_op,
                                          b_element_op,
                                          c_element_op);
    }

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

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

        // clang-format off
        str << "DeviceGroupedConvFwdDl_NHWC_KYXC_NHWK"
            << "<"
            << BlockSize << ", "
            << MPerBlock << ", "
            << NPerBlock << ", "
            << K0PerBlock << ", "
            << getConvForwardSpecializationString(ConvForwardSpecialization) << ", "
            << K1 << ", "
            << MPerXDL << ", "
            << NPerXDL << ", "
            << MXdlPerWave << ", "
            << NXdlPerWave << ", "
            << ABlockTransferSrcScalarPerVector << ", "
            << ABlockTransferDstScalarPerVector_K1 << ", "
            << BBlockTransferSrcScalarPerVector << ", "
            << BBlockTransferDstScalarPerVector_K1 << ", "
            << CShuffleMXdlPerWavePerShuffle << ", "
            << CShuffleNXdlPerWavePerShuffle << ", "
            << CBlockTransferScalarPerVector_NWaveNPerXdl
            << ">";
        // clang-format on

        return str.str();
    }
};

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