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#include "kapi/devices/bus.hpp"
#include "kapi/devices.hpp"
#include "kapi/system.hpp"
#include <kstd/memory>
#include <kstd/print>
#include <kstd/string>
#include <kstd/vector>
#include <algorithm>
#include <cstddef>
#include <utility>
namespace kapi::devices
{
bus::bus(std::size_t major, std::size_t minor, kstd::string const & name)
: device(major, minor, name)
{}
auto bus::init() -> bool
{
if (m_init_was_called.test_and_set())
{
kstd::println(kstd::print_sink::stderr, "[OS:DEV] Bus {}:{}:{} already initialized", name(), major(), minor());
return true;
}
if (!probe())
{
kstd::println(kstd::print_sink::stderr, "[OS:DEV] Bus {}:{}:{} probe failed", name(), major(), minor());
return false;
}
auto child_status = std::ranges::fold_left(m_devices, true, [&](bool acc, auto & child) -> bool {
kstd::println("[OS:DEV] Initializing child device {}@{}", child->name(), name());
return child->init() && acc;
});
m_initialized.test_and_set();
return child_status;
}
auto bus::add_child(kstd::unique_ptr<device> child) -> void
{
auto observer = m_observers.emplace_back(child.get());
child->set_parent(kstd::make_observer(this));
m_devices.push_back(std::move(child));
kapi::devices::register_device(*observer);
if (m_initialized.test())
{
kstd::println("[OS:DEV] Initializing child device {}@{}", observer->name(), name());
if (!observer->init())
{
kapi::system::panic("[OS:DEV] Failed to initialize child device");
}
}
}
[[nodiscard]] auto bus::children() const -> kstd::vector<kstd::observer_ptr<device>> const &
{
return m_observers;
}
auto bus::probe() -> bool
{
return true;
}
} // namespace kapi::devices
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