map_physical_address.h

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#pragma once
 
#include "di/meta/trivial.h"
#include "di/vocab/span/prelude.h"
#include "iris/core/error.h"
#include "iris/mm/physical_address.h"
#include "iris/mm/virtual_address.h"
 
namespace iris::mm {
struct PhysicalAddressMapping;
 
auto map_physical_address(PhysicalAddress, usize byte_size) -> Expected<PhysicalAddressMapping>;
 
struct PhysicalAddressMapping {
public:
    explicit PhysicalAddressMapping(di::Span<di::Byte> data) : m_data(data) {}
 
    ~PhysicalAddressMapping() = default;
 
    PhysicalAddressMapping(PhysicalAddressMapping const&) = delete;
    PhysicalAddressMapping(PhysicalAddressMapping&&) = default;
    auto operator=(PhysicalAddressMapping const&) -> PhysicalAddressMapping& = delete;
    auto operator=(PhysicalAddressMapping&&) -> PhysicalAddressMapping& = default;
 
    template<typename T>
    auto typed() const -> T& {
        return *reinterpret_cast<T*>(m_data.data());
    }
 
    auto span() const { return m_data; }
 
private:
    di::Span<di::Byte> m_data;
};
}