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#pragma once
#include "internal/sys.hpp"
#include <cstdint>
#include <string>
namespace host_tool
{
class HostIoInterface
{
public:
virtual ~HostIoInterface() = default;
/**
* Attempt to read bytes from offset to the destination from the host
* memory device.
*
* @param[in] offset - offset into the host memory device.
* @param[in] length - the number of bytes to copy from source.
* @param[in] destination - where to write the bytes.
* @return true on success, false on failure (such as unable to initialize
* device).
*/
virtual bool read(const std::size_t offset, const std::size_t length,
void* const destination) = 0;
/**
* Attempt to write bytes from source to offset into the host memory device.
*
* @param[in] offset - offset into the host memory device.
* @param[in] length - the number of bytes to copy from source.
* @param[in] source - the souce of the bytes to copy to the memory device.
* @return true on success, false on failure (such as unable to initialize
* device).
*/
virtual bool write(const std::size_t offset, const std::size_t length,
const void* const source) = 0;
};
class DevMemDevice : public HostIoInterface
{
public:
explicit DevMemDevice(const internal::Sys* sys = &internal::sys_impl) :
sys(sys)
{
}
~DevMemDevice() = default;
/* Don't allow copying, assignment or move assignment, only moving. */
DevMemDevice(const DevMemDevice&) = delete;
DevMemDevice& operator=(const DevMemDevice&) = delete;
DevMemDevice(DevMemDevice&&) = default;
DevMemDevice& operator=(DevMemDevice&&) = delete;
bool read(const std::size_t offset, const std::size_t length,
void* const destination) override;
bool write(const std::size_t offset, const std::size_t length,
const void* const source) override;
private:
static const std::string devMemPath;
int devMemFd = -1;
void* devMemMapped = nullptr;
const internal::Sys* sys;
};
class PpcMemDevice : public HostIoInterface
{
public:
explicit PpcMemDevice(const std::string ppcMemPath,
const internal::Sys* sys = &internal::sys_impl) :
ppcMemPath(ppcMemPath),
sys(sys)
{
}
~PpcMemDevice() override;
/* Don't allow copying or assignment, only moving. */
PpcMemDevice(const PpcMemDevice&) = delete;
PpcMemDevice& operator=(const PpcMemDevice&) = delete;
PpcMemDevice(PpcMemDevice&&) = default;
PpcMemDevice& operator=(PpcMemDevice&&) = default;
bool read(const std::size_t offset, const std::size_t length,
void* const destination) override;
bool write(const std::size_t offset, const std::size_t length,
const void* const source) override;
private:
int ppcMemFd = -1;
const std::string ppcMemPath;
const internal::Sys* sys;
};
} // namespace host_tool
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