diff options
| author | Ian Moffett <ian@osmora.org> | 2025-09-15 14:57:21 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-09-15 14:57:21 -0400 |
| commit | 0d6c636c0ef3bcdc3285afb914cf28326b1b84ff (patch) | |
| tree | 3ea5ba61c4fc919b1fcc8d90ba52b75d0110c0c0 /src/sys/include | |
| parent | 44e8b43d4a468129e62ff11f41e70c109336f4d7 (diff) | |
kern/amd64: lapic: Add LAPIC timer support
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'src/sys/include')
| -rw-r--r-- | src/sys/include/arch/amd64/lapic.h | 15 | ||||
| -rw-r--r-- | src/sys/include/arch/amd64/mdcpu.h | 2 |
2 files changed, 17 insertions, 0 deletions
diff --git a/src/sys/include/arch/amd64/lapic.h b/src/sys/include/arch/amd64/lapic.h index d73e7d0..3cb2f3a 100644 --- a/src/sys/include/arch/amd64/lapic.h +++ b/src/sys/include/arch/amd64/lapic.h @@ -31,10 +31,25 @@ #ifndef _MACHINE_LAPIC_H_ #define _MACHINE_LAPIC_H_ 1 +#define LAPIC_TIMER_VEC 0x81 + /* * Initialize the local APIC on the current * processor. */ void lapic_init(void); +/* + * Send an end-of-interrupt message to the current + * processor's Local APIC + */ +void lapic_eoi(void); + +/* + * Start Local APIC timer oneshot in microseconds. + * + * @us: Microseconds. + */ +void lapic_timer_oneshot_us(size_t usec); + #endif /* !_MACHINE_LAPIC_H_ */ diff --git a/src/sys/include/arch/amd64/mdcpu.h b/src/sys/include/arch/amd64/mdcpu.h index 1503adb..3fccc42 100644 --- a/src/sys/include/arch/amd64/mdcpu.h +++ b/src/sys/include/arch/amd64/mdcpu.h @@ -48,6 +48,7 @@ * @lapic_base: LAPIC register interface base * @x2apic: Has the x2APIC? Is 1 if true * @tss: Task state segment for this core + * @lapic_tmr_freq: Local APIC timer frequency */ struct mdcore { uint32_t apic_id; @@ -55,6 +56,7 @@ struct mdcore { void *lapic_base; uint8_t x2apic : 1; struct tss_entry tss; + size_t lapic_tmr_freq; }; #endif /* !_MACHINE_MDCPU_H_ */ |