// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
//
// 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.

#include "lite/kernels/xpu/__xpu__fc_compute.h"
#include "lite/backends/xpu/xpu_header_sitter.h"
#include "lite/core/op_registry.h"

namespace paddle {
namespace lite {
namespace kernels {
namespace xpu {

void XPUFcCompute::Run() {
  auto& param = this->Param<param_t>();
  auto& ctx = this->ctx_->As<XPUContext>();

  auto input_dims = param.input->dims();
  param.in_mat_dims = input_dims.Flatten2D(param.in_num_col_dims);
  int m = param.in_mat_dims[0];
  int k = param.in_mat_dims[1];
  int n = param.w->dims()[1];
  const float* bias = param.bias ? param.bias->data<float>() : nullptr;
  xdnn::Activation_t act_type = (param.activation_type == "relu")
                                    ? xdnn::Activation_t::RELU
                                    : xdnn::Activation_t::LINEAR;

  int r = xdnn::fc_int16(
      ctx.GetRawContext(),                                      /* context */
      false,                                                    /* TransA */
      param.transpose_w,                                        /* TransB */
      m,                                                        /* m */
      n,                                                        /* n */
      k,                                                        /* k */
      1.0f,                                                     /* alpha */
      param.input->data<float>(),                               /* A */
      reinterpret_cast<const int16_t*>(param.w->data<float>()), /* B */
      param.w_max,                                              /* max_b */
      0.0f,                                                     /* beta */
      param.output->mutable_data<float>(TARGET(kXPU)),          /* C */
      bias,                                                     /* bias */
      act_type /* act_type */);
  CHECK_EQ(r, 0);
}

}  // namespace xpu
}  // namespace kernels
}  // namespace lite
}  // namespace paddle

REGISTER_LITE_KERNEL(__xpu__fc,
                     kXPU,
                     kFloat,
                     kNCHW,
                     paddle::lite::kernels::xpu::XPUFcCompute,
                     def)
    .BindInput("Input", {LiteType::GetTensorTy(TARGET(kXPU))})
    .BindInput("Bias", {LiteType::GetTensorTy(TARGET(kXPU))})
    .BindInput("W", {LiteType::GetTensorTy(TARGET(kXPU))})
    .BindOutput("Out", {LiteType::GetTensorTy(TARGET(kXPU))})
    .Finalize();