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/*! \file
    \brief Default warp-level GEMM operators selected by data type, size, and layouts of operands.
*/

#pragma once

#include "hytlass/hytlass.h"
#include "hytlass/gemm/warp/mma_tensor_op.h"

namespace hytlass {
namespace gemm {
namespace warp {

/////////////////////////////////////////////////////////////////////////////////////////////////

template <
    /// Size of the Gemm problem - concept: gemm::GemmShape<>
    typename WarpShape_,
    /// Shape of one matrix production operation (concept: GemmShape)
    typename InstructionShape_,
    /// Data type of A elements
    typename ElementA_,
    /// Layout of A matrix (concept: MatrixLayout)
    typename LayoutA_,
    /// Data type of B elements
    typename ElementB_,
    /// Layout of B matrix (concept: MatrixLayout)
    typename LayoutB_,
    /// Element type of C matrix
    typename ElementC_,
    /// Layout of C matrix (concept: MatrixLayout)
    typename LayoutC_,
    /// Operator describing the tensor operation
    typename Operator_ = arch::OpMultiplyAdd,
    /// Number of partitions along K dimension
    int PartitionsK = 1,
    /// Store the accumulators in row major or column major.  Row major is used
    /// when output layout is interleaved.
    bool AccumulatorsInRowMajor = false>
struct DefaultMmaTensorOp;

/////////////////////////////////////////////////////////////////////////////////////////////////

/// Partial specialization for m-by-n-by-kgroup
template <
    /// Shape of one matrix production operation (concept: GemmShape)
    typename WarpShape_,
    /// Shape of one matrix production operation (concept: GemmShape)
    typename InstructionShape_,
    /// Data type of A elements
    typename ElementA,
    /// Layout of A matrix (concept: MatrixLayout)
    typename LayoutA,
    /// Data type of B elements
    typename ElementB,
    /// Layout of B matrix (concept: MatrixLayout)
    typename LayoutB,
    /// Element type of C matrix
    typename ElementC,
    /// Layout of C matrix (concept: MatrixLayout)
    typename LayoutC,
    /// Operator describing the tensor operation
    typename Operator_,
    /// Number of partitions along K dimension
    int PartitionsK,
    /// Store the accumulators in row major or column major.  Row major is used
    /// when output layout is interleaved.
    bool AccumulatorsInRowMajor>
struct DefaultMmaTensorOp {
  using Policy = hytlass::gemm::warp::MmaTensorOpPolicy<
      hytlass::arch::Mma<InstructionShape_, WARP_SIZE_GPU, 
      ElementA, hytlass::layout::RowMajor, 
      ElementB, hytlass::layout::ColumnMajor, 
      ElementC, hytlass::layout::RowMajor, 
      Operator_
    >,
      hytlass::MatrixShape<1, 1>
    >;

  // Define the warp-level tensor op
  using Type = hytlass::gemm::warp::MmaTensorOp<
      WarpShape_, ElementA, LayoutA, ElementB, LayoutB, ElementC, LayoutC,
      Policy, PartitionsK, AccumulatorsInRowMajor>;
};

/////////////////////////////////////////////////////////////////////////////////////////////////

} // namespace warp
} // namespace gemm
} // namespace hytlass
