/*******************************************************************************
 *
 * MIT License
 *
 * Copyright (c) 2021 Advanced Micro Devices, Inc.
 *
 * 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
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 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * SOFTWARE.
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#include <miopen/mlir_build.hpp>
#include <miopen/conv/invokers/mlir_impl_gemm.hpp>
#include <miopen/config.h>
#include <miopen/env.hpp>
#include <miopen/generic_search.hpp>
#include <miopen/solver.hpp>
#include <miopen/solver/implicitgemm_util.hpp>
#include <miopen/solver/mlir_common.hpp>

MIOPEN_DECLARE_ENV_VAR(MIOPEN_DEBUG_CONV_MLIR_IGEMM_BWD)

namespace miopen {
namespace solver {

bool ConvMlirIgemmBwd::IsApplicable(const ConvolutionContext& ctx) const
{
#if MIOPEN_USE_MLIR
    if(miopen::IsDisabled(MIOPEN_DEBUG_CONV_MLIR_IGEMM_BWD{}))
        return false;
    if(!ctx.direction.IsBackwardData())
        return false;
    if(!IsComposableKernelSupportedHardware(ctx))
        return false;

    return MiirIsConfigApplicable(mlir::ConstructBuildOptions(ctx, false));
#else
    std::ignore = ctx;
    return false;
#endif
}

PerformanceConvMlirIgemm ConvMlirIgemmBwd::GetPerformanceConfig(const ConvolutionContext& ctx) const
{
    std::ignore = ctx;
    return PerformanceConvMlirIgemm::MlirHeuristicInitRequest();
}

bool ConvMlirIgemmBwd::IsValidPerformanceConfig(const ConvolutionContext& ctx,
                                                const PerformanceConvMlirIgemm& config) const
{
    MIOPEN_LOG_I("");
    return config.IsValid(ctx);
}

PerformanceConvMlirIgemm ConvMlirIgemmBwd::Search(const ConvolutionContext& ctx,
                                                  const AnyInvokeParams& invoke_ctx) const
{
    return GenericSearch(*this, ctx, invoke_ctx);
}

ConvSolution ConvMlirIgemmBwd::GetSolution(const ConvolutionContext& ctx,
                                           const PerformanceConvMlirIgemm& config,
                                           bool) const
{
#if MIOPEN_USE_MLIR
    ConvSolution result;
    int kernel_count = MiirGetKernelCount(mlir::ConstructBuildOptions(ctx, false));

    for(int kernel_id = 0; kernel_id < kernel_count; ++kernel_id)
    {
        KernelInfo construction_parameters;

        construction_parameters.kernel_name  = mlir::GetKernelName(ctx, false, kernel_id);
        construction_parameters.kernel_file  = construction_parameters.kernel_name + ".mlir";
        construction_parameters.comp_options =
            mlir::ConstructBuildOptions(ctx, config, false, kernel_id);

        size_t local_size  = 0;
        size_t global_size = 0;
        MiirGenLaunchParams(construction_parameters.comp_options, local_size, global_size);
        construction_parameters.l_wk.push_back(local_size);
        construction_parameters.l_wk.push_back(1);
        construction_parameters.l_wk.push_back(1);
        construction_parameters.g_wk.push_back(global_size);
        construction_parameters.g_wk.push_back(1);
        construction_parameters.g_wk.push_back(1);

        result.construction_params.push_back(construction_parameters);
    }

    result.invoker_factory = conv::MakeMlirBwdInvokerFactory(ctx);
    return result;
#else
    std::ignore = ctx;
    std::ignore = config;
    return {};
#endif
}

} // namespace solver
} // namespace miopen
