From b7b304843f34b9f7d9c36d0603874f5050f5d83a Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Tue, 4 Jun 2024 22:18:32 -0400 Subject: kernel/amd64: Add I/O APIC driver Signed-off-by: Ian Moffett --- sys/include/arch/amd64/ioapicvar.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 sys/include/arch/amd64/ioapicvar.h (limited to 'sys/include/arch/amd64/ioapicvar.h') diff --git a/sys/include/arch/amd64/ioapicvar.h b/sys/include/arch/amd64/ioapicvar.h new file mode 100644 index 0000000..d5a75df --- /dev/null +++ b/sys/include/arch/amd64/ioapicvar.h @@ -0,0 +1,28 @@ +#ifndef _MACHINE_IOAPICVAR_H_ +#define _MACHINE_IOAPICVAR_H_ + +#include + +/* Register offsets */ +#define IOREGSEL 0x00 +#define IOWIN 0x10 +#define IOAPICVER 0x01 +#define IOREDTBL 0x10 + +union ioapic_redentry { + struct { + uint8_t vector; + uint8_t delmod : 3; + uint8_t destmod : 1; + uint8_t delivs : 1; + uint8_t intpol : 1; + uint8_t remote_irr : 1; + uint8_t trigger_mode : 1; + uint8_t interrupt_mask : 1; + uint64_t reserved : 39; + uint8_t dest_field; + }; + uint64_t value; +}; + +#endif /* !_MACHINE_IOAPICVAR_H_ */ -- cgit v1.2.3