From d0c532af74d8d486d734904fd330d5dae7f49754 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 2 Apr 2026 13:36:01 +0200
Subject: kapi: add basic device subsystem

---
 kernel/include/kernel/devices/root_bus.hpp | 32 ++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 kernel/include/kernel/devices/root_bus.hpp

(limited to 'kernel/include')

diff --git a/kernel/include/kernel/devices/root_bus.hpp b/kernel/include/kernel/devices/root_bus.hpp
new file mode 100644
index 0000000..f7bfbfb
--- /dev/null
+++ b/kernel/include/kernel/devices/root_bus.hpp
@@ -0,0 +1,32 @@
+#ifndef TEACHOS_KERNEL_DEVICES_ROOT_BUS_HPP
+#define TEACHOS_KERNEL_DEVICES_ROOT_BUS_HPP
+
+#include "kapi/devices/bus.hpp"
+#include "kapi/devices/device.hpp"
+
+#include <kstd/memory>
+#include <kstd/print>
+#include <kstd/vector>
+
+namespace kernel::devices
+{
+
+  struct root_bus final : kapi::devices::bus
+  {
+    root_bus();
+
+    auto add_child(kstd::unique_ptr<device> child) -> void override;
+
+    [[nodiscard]] auto children() const -> kstd::vector<kstd::observer_ptr<device>> const & override;
+
+    auto init() -> bool override;
+
+  private:
+    kstd::vector<kstd::unique_ptr<device>> m_children{};
+    kstd::vector<kstd::observer_ptr<device>> m_observers{};
+    bool m_initialized{};
+  };
+
+}  // namespace kernel::devices
+
+#endif
\ No newline at end of file
-- 
cgit v1.2.3


From b84c4c9d8c90f3d3fd5a60de282278912fad2f04 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 2 Apr 2026 13:59:27 +0200
Subject: x86_64/devices: implement ISA bus stub

---
 kernel/include/kernel/devices/root_bus.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'kernel/include')

diff --git a/kernel/include/kernel/devices/root_bus.hpp b/kernel/include/kernel/devices/root_bus.hpp
index f7bfbfb..d92914d 100644
--- a/kernel/include/kernel/devices/root_bus.hpp
+++ b/kernel/include/kernel/devices/root_bus.hpp
@@ -8,6 +8,8 @@
 #include <kstd/print>
 #include <kstd/vector>
 
+#include <atomic>
+
 namespace kernel::devices
 {
 
@@ -24,7 +26,7 @@ namespace kernel::devices
   private:
     kstd::vector<kstd::unique_ptr<device>> m_children{};
     kstd::vector<kstd::observer_ptr<device>> m_observers{};
-    bool m_initialized{};
+    std::atomic_flag m_initialized{};
   };
 
 }  // namespace kernel::devices
-- 
cgit v1.2.3


From 66ffd2ad8c793c4eea1527848fe4772e42595718 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 2 Apr 2026 14:24:52 +0200
Subject: kapi: extract common bus code

---
 kernel/include/kernel/devices/root_bus.hpp | 18 ------------------
 1 file changed, 18 deletions(-)

(limited to 'kernel/include')

diff --git a/kernel/include/kernel/devices/root_bus.hpp b/kernel/include/kernel/devices/root_bus.hpp
index d92914d..660b715 100644
--- a/kernel/include/kernel/devices/root_bus.hpp
+++ b/kernel/include/kernel/devices/root_bus.hpp
@@ -2,13 +2,6 @@
 #define TEACHOS_KERNEL_DEVICES_ROOT_BUS_HPP
 
 #include "kapi/devices/bus.hpp"
-#include "kapi/devices/device.hpp"
-
-#include <kstd/memory>
-#include <kstd/print>
-#include <kstd/vector>
-
-#include <atomic>
 
 namespace kernel::devices
 {
@@ -16,17 +9,6 @@ namespace kernel::devices
   struct root_bus final : kapi::devices::bus
   {
     root_bus();
-
-    auto add_child(kstd::unique_ptr<device> child) -> void override;
-
-    [[nodiscard]] auto children() const -> kstd::vector<kstd::observer_ptr<device>> const & override;
-
-    auto init() -> bool override;
-
-  private:
-    kstd::vector<kstd::unique_ptr<device>> m_children{};
-    kstd::vector<kstd::observer_ptr<device>> m_observers{};
-    std::atomic_flag m_initialized{};
   };
 
 }  // namespace kernel::devices
-- 
cgit v1.2.3