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#pragma once
#include "data_handler.hpp"
#include "mapper_errors.hpp"
#include "window_hw_interface.hpp"
#include <cstdint>
#include <memory>
#include <vector>
namespace ipmi_flash
{
struct LpcRegion
{
/* Host LPC address where the chunk is to be mapped. */
std::uint32_t address;
/* Size of the chunk to be mapped. */
std::uint32_t length;
} __attribute__((packed));
/**
* Data Handler for configuration the ASPEED LPC memory region, reading and
* writing data.
*/
class LpcDataHandler : public DataInterface
{
public:
/**
* Create an LpcDataHandler.
*
* @param[in] mapper - pointer to a mapper implementation to use.
*/
explicit LpcDataHandler(std::unique_ptr<HardwareMapperInterface> mapper) :
mapper(std::move(mapper)), initialized(false)
{
}
bool open() override;
bool close() override;
std::vector<std::uint8_t> copyFrom(std::uint32_t length) override;
bool writeMeta(const std::vector<std::uint8_t>& configuration) override;
std::vector<std::uint8_t> readMeta() override;
private:
bool setInitializedAndReturn(bool value)
{
if (value)
{
try
{
/* Try really opening the map. */
memory = mapper->open();
}
catch (const MapperException& e)
{
std::fprintf(stderr, "received mapper exception: %s\n",
e.what());
return false;
}
}
initialized = value;
return value;
}
std::unique_ptr<HardwareMapperInterface> mapper;
bool initialized;
/* The LPC Handler does not take ownership of this, in case there's cleanup
* required for close()
*/
MemorySet memory = {};
/* Offset in reserved memory at which host data arrives. */
/* Size of the chunk of the memory region in use by the host (e.g.
* mapped over external block mechanism).
*/
WindowMapResult mappingResult = {};
};
} // namespace ipmi_flash
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