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timekeeper: redo timekeeping

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Matheus
2024-09-29 11:20:40 -03:00
parent bb910d9e20
commit b8acbc5bcd
12 changed files with 280 additions and 96 deletions
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kernel-src/arch/x86-64/apic.c
+1 -10
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@@ -178,8 +178,6 @@ void arch_apic_initap() {
}
}
printf("processor id: %lu (APIC) %lu (ACPI)\n", current_cpu()->id, current_cpu()->acpiid);
isr_t *nmiisr = interrupt_allocate(nmi, NULL, IPL_MAX); // MAX IPL because NMI
__assert(nmiisr);
@@ -225,16 +223,9 @@ void arch_apic_timerinit() {
writelapic(APIC_TIMER_DIVIDE, 11);
void (*uswait)(time_t) = NULL;
if (arch_hpet_exists())
uswait = arch_hpet_waitus;
__assert(uswait);
writelapic(APIC_TIMER_INITIALCOUNT, 0xffffffff);
uswait(50000);
timekeeper_wait_us(50000);
time_t ticksperus = (0xffffffff - readlapic(APIC_TIMER_COUNT)) / 50000;