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/*
* Copyright 2019 Xilinx Inc.
*
* 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.
*/
#pragma once
#include <functional>
#include <memory>
#include <vitis/ai/with_injection.hpp>
#include "./buffer_object_export.hpp"
namespace xir {
struct XclBo {
void* xcl_handle;
unsigned int bo_handle;
};
/**
* @brief a device memory management
*/
class BufferObject : public vitis::ai::WithInjection<BufferObject> {
public:
explicit BufferObject() = default;
static VART_BUFFER_OBJECT_DLLSPEC std::unique_ptr<BufferObject> create(
size_t size, size_t device_id, const std::string& cu_name);
public:
BufferObject(const BufferObject&) = delete;
BufferObject& operator=(const BufferObject& other) = delete;
virtual ~BufferObject() = default;
public:
virtual size_t size() = 0;
virtual void* data_w() = 0;
virtual const void* data_r() const = 0;
virtual uint64_t phy(size_t offset = 0) = 0;
virtual XclBo get_xcl_bo() const;
/// sync_for_read before reading
virtual void sync_for_read(uint64_t offset, size_t size) = 0;
/// sync_for_write after write
virtual void sync_for_write(uint64_t offset, size_t size) = 0;
/// copy from host to this buffer object
virtual void copy_from_host(const void* buf, size_t size, size_t offset) = 0;
/// copy from this buffer object to host
virtual void copy_to_host(void* buf, size_t size, size_t offset) = 0;
/// todo: copy from other buffer object to this buffer object.
/// virtual void copy_from_other_bo (BufferObject * other, size_t size, size_t
/// offset) = 0;
public:
template <typename T>
T* get_w(size_t offset = 0) {
return reinterpret_cast<T*>(data_w()) + offset;
}
template <typename T>
const T* get_r(size_t offset = 0) const {
return reinterpret_cast<const T*>(data_r()) + offset;
}
};
} // namespace xir
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