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#include "arch/devices/init.hpp"
#include "kapi/acpi.hpp"
#include "kapi/cpu.hpp"
#include "kapi/devices.hpp"
#include "arch/boot/boot.hpp"
#include "arch/bus/isa.hpp"
#include "arch/devices/legacy_pit.hpp"
#include <kstd/memory>
#include <kstd/print>
#include <acpi/acpi.hpp>
#include <cstdint>
#include <utility>
namespace arch::devices
{
namespace
{
constexpr auto pit_frequency_in_hz = std::uint32_t{100u};
auto get_acpi_root_pointer() -> kstd::observer_ptr<::acpi::rsdp const>
{
auto const & mbi = kapi::boot::bootstrap_information.mbi;
auto system_description_pointer = static_cast<::acpi::rsdp const *>(nullptr);
if (auto const & xsdp = mbi->maybe_acpi_xsdp())
{
auto data = xsdp->pointer().data();
system_description_pointer = reinterpret_cast<::acpi::xsdp const *>(data);
}
else if (auto const & rsdp = mbi->maybe_acpi_rsdp())
{
auto data = rsdp->pointer().data();
system_description_pointer = reinterpret_cast<::acpi::rsdp const *>(data);
}
return kstd::make_observer(system_description_pointer);
}
} // namespace
auto init_acpi_devices() -> void
{
auto acpi_root_pointer = get_acpi_root_pointer();
if (acpi_root_pointer && acpi_root_pointer->validate())
{
if (kapi::acpi::init(*acpi_root_pointer))
{
kstd::println("[x86_64:DEV] ACPI subsystem initialized.");
}
}
kapi::cpu::discover_topology();
}
auto init_legacy_devices() -> void
{
kstd::println("[x86_64:DEV] Initializing ISA bus...");
auto isa_major_number = kapi::devices::allocate_major_number();
auto isa_bus = kstd::make_unique<arch::bus::isa>(isa_major_number);
auto pit_major_number = kapi::devices::allocate_major_number();
auto pit = kstd::make_unique<arch::devices::legacy_pit>(pit_major_number, pit_frequency_in_hz);
isa_bus->add_child(std::move(pit));
auto & root_bus = kapi::devices::get_root_bus();
root_bus.add_child(std::move(isa_bus));
}
} // namespace arch::devices
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