diff options
| author | Ian Moffett <ian@osmora.org> | 2023-12-25 14:57:12 -0500 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2023-12-25 14:57:12 -0500 |
| commit | 6f5aba866f01f5690438309629e96812fc099414 (patch) | |
| tree | 9cfd2a927d2ce676c65fca4dd12f902700cb2817 /sys/include/arch | |
| parent | 8e559cbb41d696eb119c5daccd33670ebb5207c3 (diff) | |
kernel/amd64: lapic: Add initial LAPIC Timer logic
The commit adds the initial Local APIC timer support in Hyra... However,
the interrupt service routine is a stub and needs to be completed.
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include/arch')
| -rw-r--r-- | sys/include/arch/amd64/lapic.h | 2 | ||||
| -rw-r--r-- | sys/include/arch/amd64/lapicvar.h | 17 |
2 files changed, 7 insertions, 12 deletions
diff --git a/sys/include/arch/amd64/lapic.h b/sys/include/arch/amd64/lapic.h index 1e7caf6..1ef41fb 100644 --- a/sys/include/arch/amd64/lapic.h +++ b/sys/include/arch/amd64/lapic.h @@ -36,6 +36,8 @@ #define LAPIC_TMR_PERIODIC 0x01 void lapic_timer_init(size_t *freq_out); +void lapic_timer_oneshot(bool mask, uint32_t count); +void lapic_timer_oneshot_us(uint32_t us); void lapic_init(void); #endif /* !_AMD64_LAPIC_H_ */ diff --git a/sys/include/arch/amd64/lapicvar.h b/sys/include/arch/amd64/lapicvar.h index aad9fa8..43c89a6 100644 --- a/sys/include/arch/amd64/lapicvar.h +++ b/sys/include/arch/amd64/lapicvar.h @@ -90,18 +90,11 @@ /* LVT bits */ #define LAPIC_LVT_MASK __BIT(16) +#define LVT_TMR_ONESHOT 0x00 +#define LVT_TMR_PERIODIC 0x01 +#define LVT_TMR_TSC_DEADLINE 0x02 -/* - * Local APIC Interrupt stack [IST VALUE]. - * - * This value should be non-zero and reserved - * for only 1 interrupt vector to prevent clobbering - * of the interrupt stacks. - * - * XXX TODO: The value is currently 0, however, this needs - * to be updated to a non-zero value as soon as - * possible. - */ -#define LAPIC_TMR_INTSTACK 0 +/* LAPIC timer interrupt stack size in bytes */ +#define LAPIC_TMR_STACKSZ 4096 #endif /* !_AMD64_LAPICVAR_H_ */ |