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apic: send ipi

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Matheus
2023-11-30 17:47:24 -03:00
parent 50fbef6a5f
commit b1b598950c
2 changed files with 9 additions and 0 deletions
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kernel-src/arch/x86-64/apic.c
+8
View File
@@ -18,6 +18,7 @@
#define APIC_REG_EOI 0xB0 #define APIC_REG_EOI 0xB0
#define APIC_REG_SPURIOUS 0xF0 #define APIC_REG_SPURIOUS 0xF0
#define APIC_REG_ICR_LO 0x300 #define APIC_REG_ICR_LO 0x300
#define APIC_REG_ICR_LO_STATUS (1 << 12)
#define APIC_REG_ICR_HI 0x310 #define APIC_REG_ICR_HI 0x310
#define APIC_LVT_TIMER 0x320 #define APIC_LVT_TIMER 0x320
#define APIC_LVT_THERMAL 0x330 #define APIC_LVT_THERMAL 0x330
@@ -279,6 +280,13 @@ void arch_apic_timerinit() {
__assert(_cpu()->timer); __assert(_cpu()->timer);
} }
void arch_apic_sendipi(uint8_t cpu, uint8_t vec, uint8_t dest, uint8_t mode, uint8_t level) {
while (readlapic(APIC_REG_ICR_LO) & APIC_REG_ICR_LO_STATUS) CPU_PAUSE();
writelapic(APIC_REG_ICR_HI, (uint32_t)cpu << 24);
writelapic(APIC_REG_ICR_LO, vec | (level << 14) | (mode << 15) | (dest << 18));
}
void arch_apic_init() { void arch_apic_init() {
madt = arch_acpi_findtable("APIC", 0); madt = arch_acpi_findtable("APIC", 0);
__assert(madt); __assert(madt);
kernel-src/include/x86-64/arch/apic.h
+1
View File
@@ -6,5 +6,6 @@ void arch_apic_init();
void arch_apic_initap(); void arch_apic_initap();
void arch_apic_eoi(); void arch_apic_eoi();
void arch_ioapic_setirq(uint8_t gsi, uint8_t vector, uint8_t proc, bool masked); void arch_ioapic_setirq(uint8_t gsi, uint8_t vector, uint8_t proc, bool masked);
void arch_apic_sendipi(uint8_t cpu, uint8_t vec, uint8_t dest, uint8_t mode, uint8_t level);
#endif #endif