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

---
 arch/x86_64/kapi/devices.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 arch/x86_64/kapi/devices.cpp

(limited to 'arch/x86_64/kapi')

diff --git a/arch/x86_64/kapi/devices.cpp b/arch/x86_64/kapi/devices.cpp
new file mode 100644
index 0000000..25185d6
--- /dev/null
+++ b/arch/x86_64/kapi/devices.cpp
@@ -0,0 +1,22 @@
+#include "kapi/devices.hpp"
+
+#include "arch/bus/isa.hpp"
+
+#include <kstd/memory>
+#include <kstd/print>
+
+#include <utility>
+
+namespace kapi::devices
+{
+
+  auto init_platform_devices() -> void
+  {
+    kstd::println("[x86_64:devices] Initializing ISA bus...");
+    auto isa_bus = kstd::make_unique<arch::bus::isa>();
+
+    auto & root_bus = get_root_bus();
+    root_bus.add_child(std::move(isa_bus));
+  }
+
+}  // namespace kapi::devices
\ No newline at end of file
-- 
cgit v1.2.3


From ab4c59912c526d515e6e72188c08a7f92e5573e8 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 2 Apr 2026 15:07:54 +0200
Subject: x86_64: implement legacy PIT driver

---
 arch/x86_64/kapi/devices.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

(limited to 'arch/x86_64/kapi')

diff --git a/arch/x86_64/kapi/devices.cpp b/arch/x86_64/kapi/devices.cpp
index 25185d6..7aa7090 100644
--- a/arch/x86_64/kapi/devices.cpp
+++ b/arch/x86_64/kapi/devices.cpp
@@ -1,20 +1,31 @@
 #include "kapi/devices.hpp"
 
 #include "arch/bus/isa.hpp"
+#include "arch/devices/legacy_pit.hpp"
 
 #include <kstd/memory>
 #include <kstd/print>
 
+#include <cstdint>
 #include <utility>
 
 namespace kapi::devices
 {
 
+  namespace
+  {
+    constexpr auto pit_frequency_in_hz = std::uint32_t{100u};
+  }
+
   auto init_platform_devices() -> void
   {
     kstd::println("[x86_64:devices] Initializing ISA bus...");
+
     auto isa_bus = kstd::make_unique<arch::bus::isa>();
 
+    auto pit = kstd::make_unique<arch::devices::legacy_pit>(pit_frequency_in_hz);
+    isa_bus->add_child(std::move(pit));
+
     auto & root_bus = get_root_bus();
     root_bus.add_child(std::move(isa_bus));
   }
-- 
cgit v1.2.3


From 21489576381d827871e7cdf060929c5d7f3d4e9f Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Thu, 2 Apr 2026 15:49:14 +0200
Subject: devices: don't automatically allocate major numbers in ctors

---
 arch/x86_64/kapi/devices.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'arch/x86_64/kapi')

diff --git a/arch/x86_64/kapi/devices.cpp b/arch/x86_64/kapi/devices.cpp
index 7aa7090..b15503d 100644
--- a/arch/x86_64/kapi/devices.cpp
+++ b/arch/x86_64/kapi/devices.cpp
@@ -21,9 +21,11 @@ namespace kapi::devices
   {
     kstd::println("[x86_64:devices] Initializing ISA bus...");
 
-    auto isa_bus = kstd::make_unique<arch::bus::isa>();
+    auto isa_major_number = kapi::devices::allocate_major_number();
+    auto isa_bus = kstd::make_unique<arch::bus::isa>(isa_major_number);
 
-    auto pit = kstd::make_unique<arch::devices::legacy_pit>(pit_frequency_in_hz);
+    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 = get_root_bus();
-- 
cgit v1.2.3