diff options
Diffstat (limited to 'dev/Kernel/HALKit/AMD64/HalAPICController.cc')
| -rw-r--r-- | dev/Kernel/HALKit/AMD64/HalAPICController.cc | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/dev/Kernel/HALKit/AMD64/HalAPICController.cc b/dev/Kernel/HALKit/AMD64/HalAPICController.cc new file mode 100644 index 00000000..e4e35790 --- /dev/null +++ b/dev/Kernel/HALKit/AMD64/HalAPICController.cc @@ -0,0 +1,39 @@ +/* ------------------------------------------- + + Copyright (C) 2024, Amlal EL Mahrouss, all rights reserved. + +------------------------------------------- */ + +#include <Mod/ACPI/ACPIFactoryInterface.h> +#include <HALKit/AMD64/Processor.h> + +#define cIOAPICRegVal (4) +#define cIOAPICRegReg (0) + +namespace Kernel::HAL +{ + /// @brief Read from APIC controller. + /// @param reg register. + UInt32 APICController::Read(UInt32 reg) noexcept + { + MUST_PASS(this->fApic); + + UInt32 volatile* io_apic = (UInt32 volatile*)this->fApic; + io_apic[cIOAPICRegReg] = (reg & 0xFF); + + return io_apic[cIOAPICRegVal]; + } + + /// @brief Write to APIC controller. + /// @param reg register. + /// @param value value. + Void APICController::Write(UInt32 reg, UInt32 value) noexcept + { + MUST_PASS(this->fApic); + + UInt32 volatile* io_apic = (UInt32 volatile*)this->fApic; + + io_apic[cIOAPICRegReg] = (reg & 0xFF); + io_apic[cIOAPICRegVal] = value; + } +} // namespace Kernel::HAL |