From c86b42b88659c50b6def9b5b52b4605b2a0e5d13 Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Fri, 24 Jul 2026 12:36:04 +0200
Subject: kapi/interrupts: add ISR context

---
 arch/x86_64/arch/devices/legacy_pit.cpp | 15 +++++++++------
 arch/x86_64/arch/devices/legacy_pit.hpp |  3 ++-
 2 files changed, 11 insertions(+), 7 deletions(-)

(limited to 'arch/x86_64')

diff --git a/arch/x86_64/arch/devices/legacy_pit.cpp b/arch/x86_64/arch/devices/legacy_pit.cpp
index b2a30ef9..b24f87ea 100644
--- a/arch/x86_64/arch/devices/legacy_pit.cpp
+++ b/arch/x86_64/arch/devices/legacy_pit.cpp
@@ -63,7 +63,7 @@ namespace arch::devices
 
     auto divisor = static_cast<std::uint16_t>(base_frequency / data->frequency_in_hz);
 
-    kapi::interrupts::register_handler(data->irq_number, *this);
+    kapi::interrupts::register_handler(data->irq_number, *this, data);
 
     command_port::write<std::uint8_t>(square_wave_mode);
     io::wait();
@@ -89,17 +89,20 @@ namespace arch::devices
     return pit_names;
   }
 
-  auto pit_driver::handle_interrupt(std::uint32_t irq_number) -> kapi::interrupts::status
+  auto pit_driver::handle_interrupt(std::uint32_t irq_number, kstd::weak_ptr<void> context) -> kapi::interrupts::status
   {
-    // auto data = static_pointer_cast<driver_data>(device.driver_data());
+    auto data = static_pointer_cast<driver_data>(context.lock());
+    if (!data)
+    {
+      return kapi::interrupts::status::unhandled;
+    }
 
-    if (irq_number != 0)
+    if (irq_number != data->irq_number)
     {
       return kapi::interrupts::status::unhandled;
     }
 
-    // TODO: upgrade kapi interrupts to gain access to the device.
-    // ++m_ticks;
+    ++data->ticks;
 
     return kapi::interrupts::status::handled;
   }
diff --git a/arch/x86_64/arch/devices/legacy_pit.hpp b/arch/x86_64/arch/devices/legacy_pit.hpp
index f0a18ecb..31c02207 100644
--- a/arch/x86_64/arch/devices/legacy_pit.hpp
+++ b/arch/x86_64/arch/devices/legacy_pit.hpp
@@ -6,6 +6,7 @@
 #include <kapi/devices.hpp>
 #include <kapi/interrupts.hpp>
 
+#include <kstd/memory.hpp>
 #include <kstd/result.hpp>
 
 #include <cstdint>
@@ -42,7 +43,7 @@ namespace arch::devices
 
     [[nodiscard]] auto supported_names() const -> std::span<std::string_view const> override;
 
-    auto handle_interrupt(std::uint32_t irq_number) -> kapi::interrupts::status override;
+    auto handle_interrupt(std::uint32_t irq_number, kstd::weak_ptr<void> context) -> kapi::interrupts::status override;
 
   protected:
     auto query_interface(kapi::devices::interface interface) -> void * override;
-- 
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