/*******************************************************************************
* Copyright 2017 Intel Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*******************************************************************************/

#ifndef CPU_GEMM_X8S8S32X_CONVOLUTION_HPP
#define CPU_GEMM_X8S8S32X_CONVOLUTION_HPP

#include <memory>

#include "common/c_types_map.hpp"
#include "common/memory_tracking.hpp"
#include "common/primitive.hpp"

#include "cpu/platform.hpp"

#include "cpu/cpu_convolution_pd.hpp"

#include "cpu/gemm_convolution_utils.hpp"
#include "cpu/gemm_x8s8s32x_convolution_utils.hpp"

#include "cpu/gemm/gemm.hpp"
#include "cpu/zero_point_utils.hpp"

namespace dnnl {
namespace impl {
namespace cpu {

struct gemm_x8s8s32x_convolution_fwd_t : public primitive_t {
    struct pd_t : public cpu_convolution_fwd_pd_t {
        using cpu_convolution_fwd_pd_t::cpu_convolution_fwd_pd_t;

        DECLARE_COMMON_PD_T(src_md()->data_type == data_type::u8
                        ? IGEMM_S8U8S32_IMPL_STR
                        : IGEMM_S8S8S32_IMPL_STR,
                gemm_x8s8s32x_convolution_fwd_t, USE_GLOBAL_SCRATCHPAD);

        status_t init(engine_t *engine) {
            using namespace data_type;
            using skip_mask_t = primitive_attr_t::skip_mask_t;
            const auto dst_type = dst_md(0)->data_type;

            VDISPATCH_CONV(
                    DNNL_CPU_THREADING_RUNTIME != DNNL_RUNTIME_THREADPOOL,
                    VERBOSE_UNSUPPORTED_THREADPOOL_RUNTIME);
            VDISPATCH_CONV(is_fwd(), VERBOSE_BAD_PROPKIND);
            VDISPATCH_CONV(set_default_alg_kind(alg_kind::convolution_direct),
                    VERBOSE_BAD_ALGORITHM);
            VDISPATCH_CONV(
                    utils::one_of(dst_md()->data_type, f32, bf16, s32, s8, u8),
                    VERBOSE_UNSUPPORTED_DT_CFG);

            VDISPATCH_CONV(utils::one_of(src_md()->data_type, s8, u8),
                    VERBOSE_UNSUPPORTED_DT);
            VDISPATCH_CONV(
                    weights_md()->data_type == s8, VERBOSE_UNSUPPORTED_DT);
            VDISPATCH_CONV(IMPLICATION(with_bias(),
                                   utils::one_of(weights_md(1)->data_type, f32,
                                           bf16, s32, s8, u8)),
                    VERBOSE_UNSUPPORTED_DT_CFG);

            VDISPATCH_CONV(!has_zero_dim_memory(), VERBOSE_EMPTY_TENSOR, "");

            VDISPATCH_CONV(attr()->has_default_values(skip_mask_t::scales
                                           | skip_mask_t::zero_points
                                           | skip_mask_t::post_ops
                                           | skip_mask_t::sum_dt,
                                   dst_type),
                    VERBOSE_UNSUPPORTED_ATTR);

            VDISPATCH_CONV(attr()->post_ops_.check_sum_consistency(dst_type,
                                   /* is_int8 */ true),
                    VERBOSE_UNSUPPORTED_POSTOP);
            CHECK(attr_scales_ok());
            CHECK(attr_zero_points_ok());

            auto scratchpad = scratchpad_registry().registrar();

            // TODO: make `init_conf` assign initialized object to `jcp_`
            jcp_ = conv_gemm_conf_t();
            CHECK(jit_gemm_convolution_utils::init_conf(jcp_, scratchpad,
                    *desc(), src_md_, weights_md_, dst_md_, bias_md_, attr_,
                    dnnl_get_max_threads()));

            VDISPATCH_CONV(gemm_x8s8s32x_convolution_utils::post_ops_ok(
                                   attr()->post_ops_, &dst_md_),
                    VERBOSE_UNSUPPORTED_POSTOP);

            return status::success;
        }

        conv_gemm_conf_t jcp_ = utils::zero<decltype(jcp_)>();
    };

    gemm_x8s8s32x_convolution_fwd_t(const pd_t *apd) : primitive_t(apd) {}

    status_t init(engine_t *engine) override {
        CHECK(safe_ptr_assign(pp_ker_, pp_ker_t::create(pd(), pd()->jcp_)));
        return (pp_ker_) ? pp_ker_->create_kernel() : status::success;
    }

    status_t execute(const exec_ctx_t &ctx) const override {
        return execute_forward(ctx);
    }

private:
    const pd_t *pd() const { return (const pd_t *)primitive_t::pd().get(); }
    status_t execute_forward(const exec_ctx_t &ctx) const;
    status_t execute_forward_thr(const int ithr, const int nthr,
            const char *src_base, const int8_t *wei_base, const char *bia_base,
            void *dst_base, const float *scales, const float *dst_scales,
            const zero_point_call_params_t &zp,
            const memory_tracking::grantor_t &scratchpad,
            const void *post_ops_binary_rhs_arg_vec,
            const exec_ctx_t &ctx) const;

    using pp_ker_t = gemm_x8s8s32x_convolution_utils::pp_ker_t;
    std::unique_ptr<pp_ker_t> pp_ker_;
};

struct gemm_x8s8s32x_convolution_bwd_data_t : public primitive_t {
    struct pd_t : public cpu_convolution_bwd_data_pd_t {
        using cpu_convolution_bwd_data_pd_t::cpu_convolution_bwd_data_pd_t;

        DECLARE_COMMON_PD_T(diff_dst_md()->data_type == data_type::u8
                        ? IGEMM_S8U8S32_IMPL_STR
                        : IGEMM_S8S8S32_IMPL_STR,
                gemm_x8s8s32x_convolution_bwd_data_t, USE_GLOBAL_SCRATCHPAD);

        status_t init(engine_t *engine) {
            using namespace data_type;

            VDISPATCH_CONV(
                    DNNL_CPU_THREADING_RUNTIME != DNNL_RUNTIME_THREADPOOL,
                    VERBOSE_UNSUPPORTED_THREADPOOL_RUNTIME);
            VDISPATCH_CONV(desc()->prop_kind == prop_kind::backward_data,
                    VERBOSE_BAD_PROPKIND);
            VDISPATCH_CONV(utils::one_of(diff_dst_md()->data_type, s8, u8),
                    VERBOSE_UNSUPPORTED_DT);
            VDISPATCH_CONV(
                    weights_md()->data_type == s8, VERBOSE_UNSUPPORTED_DT);
            VDISPATCH_CONV(utils::one_of(diff_src_md()->data_type, f32, bf16,
                                   s32, s8, u8),
                    VERBOSE_UNSUPPORTED_DT);
            VDISPATCH_CONV(IMPLICATION(with_bias(),
                                   utils::one_of(weights_md(1)->data_type, f32,
                                           bf16, s32, s8, u8)),
                    VERBOSE_UNSUPPORTED_DT_CFG);
            VDISPATCH_CONV(set_default_alg_kind(alg_kind::convolution_direct),
                    VERBOSE_BAD_ALGORITHM);

            VDISPATCH_CONV(!has_zero_dim_memory(), VERBOSE_EMPTY_TENSOR, "");
            VDISPATCH_CONV(attr()->has_default_values(
                                   primitive_attr_t::skip_mask_t::scales),
                    VERBOSE_UNSUPPORTED_ATTR);
            CHECK(attr_scales_ok());

            auto scratchpad = scratchpad_registry().registrar();

            // TODO: make `init_conf` assign initialized object to `jcp_`
            jcp_ = conv_gemm_conf_t();
            return jit_gemm_convolution_utils::init_conf(jcp_, scratchpad,
                    *desc(), diff_src_md_, weights_md_, diff_dst_md_, bias_md_,
                    attr_, dnnl_get_max_threads());
        }

        bool support_bias() const override { return true; }

        conv_gemm_conf_t jcp_ = utils::zero<decltype(jcp_)>();
    };

    gemm_x8s8s32x_convolution_bwd_data_t(const pd_t *apd) : primitive_t(apd) {}

    status_t execute(const exec_ctx_t &ctx) const override {
        return execute_backward_data(ctx);
    }

private:
    status_t execute_backward_data(const exec_ctx_t &ctx) const;
    status_t execute_backward_data_thr(const int ithr, const int nthr,
            const char *diff_dst_base, const int8_t *wei_base,
            const char *bia_base, char *diff_src_base,
            const memory_tracking::grantor_t &scratchpad,
            const exec_ctx_t &ctx) const;
    const pd_t *pd() const { return (const pd_t *)primitive_t::pd().get(); }
};

} // namespace cpu
} // namespace impl
} // namespace dnnl

#endif
