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#include "kapi/acpi.hpp"
#include "kapi/system.hpp"
#include "kernel/acpi/manager.hpp"
#include <kstd/memory>
#include <algorithm>
#include <atomic>
#include <cstddef>
#include <cstdint>
#include <optional>
#include <span>
#include <string_view>
namespace kapi::acpi
{
namespace
{
auto constinit manager = std::optional<kernel::acpi::manager>{};
} // namespace
auto init(root_system_description_pointer const & sdp) -> bool
{
auto static constinit initialized = std::atomic_flag{};
if (initialized.test_and_set())
{
system::panic("[OS:ACPI] The ACPI manager has already been initialized!");
}
manager.emplace(sdp);
return manager->load_tables();
}
auto validate_checksum(std::span<std::byte const> data) -> bool
{
auto sum = std::ranges::fold_left(data, std::uint8_t{}, [](auto acc, auto byte) {
return static_cast<std::uint8_t>(acc + static_cast<std::uint8_t>(byte));
});
return sum == 0;
}
auto get_table(std::string_view signature) -> kstd::observer_ptr<system_description_table_header const>
{
return manager->get_table(signature);
}
}; // namespace kapi::acpi
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