kapi: introduce device interfaces

1 files changed, 17 insertions, 4 deletions

diff --git a/kernel/kapi/devices.cpp b/kernel/kapi/devices.cpp
index de4bf9e5..ef72c667 100644
--- a/kernel/kapi/devices.cpp
+++ b/kernel/kapi/devices.cpp
@@ -3,6 +3,7 @@
 #include <kernel/devices/root_bus.hpp>
 
 #include <kapi/system.hpp>
+#include <kapi/test_support/devices.hpp>
 
 #include <kstd/flat_map.hpp>
 #include <kstd/memory.hpp>
@@ -25,12 +26,13 @@ namespace kapi::devices
 
   auto init() -> void
   {
-    auto static is_initialized = std::atomic_flag{};
-    if (is_initialized.test_and_set())
+    if (root_bus.has_value())
     {
-      return;
+      kapi::system::panic("[OS:DEV] The device subsystem has already been initialized");
     }
 
+    interface_registry::init();
+
     auto & bus = root_bus.emplace();
     register_device(bus);
     bus.init();
@@ -83,4 +85,15 @@ namespace kapi::devices
     return nullptr;
   }
 
-}  // namespace kapi::devices
\ No newline at end of file
+}  // namespace kapi::devices
+
+namespace kapi::test_support::devices
+{
+  auto deinit() -> void
+  {
+    deinit_interface_registry();
+
+    kapi::devices::root_bus.reset();
+    kapi::devices::next_major_number = 1;
+  }
+}  // namespace kapi::test_support::devices
\ No newline at end of file