/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 "mps_utils.h"

namespace tvm {
namespace contrib {

// MPS Data Type
MPSDataType MPSType::DLTypeToMPSType(const DLDataType &dtype) {
  switch (dtype.code) {
  case kDLInt:
    if (dtype.bits == 8 && dtype.lanes == 1)
      return MPSDataTypeInt8;
    else if (dtype.bits == 16 && dtype.lanes == 1)
      return MPSDataTypeInt16;
    else
      LOG(FATAL) << "Unsupported type";
    break;
  case kDLUInt:
    if (dtype.bits == 8 && dtype.lanes == 1)
      return MPSDataTypeUInt8;
    else if (dtype.bits == 16 && dtype.lanes == 1)
      return MPSDataTypeUInt16;
    else if (dtype.bits == 32 && dtype.lanes == 1)
      return MPSDataTypeUInt32;
    LOG(FATAL) << "Unsupported type";
    break;
  case kDLFloat:
    if (dtype.bits == 16 && dtype.lanes == 1)
      return MPSDataTypeFloat16;
    else if (dtype.bits == 32 && dtype.lanes == 1)
      return MPSDataTypeFloat32;
    else
      LOG(FATAL) << "Unsupported type";
    break;
  default:
    LOG(FATAL) << "Unsupported type";
  }
  return MPSDataTypeFloat32;
}

// MetalThreadEntry

MPSImage *MetalThreadEntry::AllocMPSImage(id<MTLDevice> dev,
                                          MPSImageDescriptor *desc) {
  MPSImage *mpsimg = [[MPSImage alloc] initWithDevice:dev imageDescriptor:desc];
  img_table.push_back(mpsimg);
  return mpsimg;
}

MPSTemporaryImage *MetalThreadEntry::AllocTempImage(id<MTLCommandBuffer> cb,
                                                    MPSImageDescriptor *desc) {
  MPSTemporaryImage *mpsimg =
      [MPSTemporaryImage temporaryImageWithCommandBuffer:cb
                                         imageDescriptor:desc];
  return mpsimg;
}

MetalThreadEntry::MetalThreadEntry() {
  auto func = runtime::Registry::Get("device_api.metal");
  void *ret = (*func)();
  metal_api = static_cast<runtime::metal::MetalWorkspace *>(ret);
}

MetalThreadEntry::~MetalThreadEntry() {
  for (int i = 0; i < img_table.size(); ++i) {
    [img_table[i] dealloc];
  }
}

typedef dmlc::ThreadLocalStore<MetalThreadEntry> MetalThreadStore;

MetalThreadEntry *MetalThreadEntry::ThreadLocal() {
  return MetalThreadStore::Get();
}

} // namespace contrib
} // namespace tvm
