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Diffstat (limited to 'arch/x86/kernel/irqinit_32.c')
-rw-r--r--arch/x86/kernel/irqinit_32.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/x86/kernel/irqinit_32.c b/arch/x86/kernel/irqinit_32.c
index d66914287ee..9200a1e2752 100644
--- a/arch/x86/kernel/irqinit_32.c
+++ b/arch/x86/kernel/irqinit_32.c
@@ -74,6 +74,15 @@ void __init init_ISA_irqs (void)
}
}
+/*
+ * IRQ2 is cascade interrupt to second interrupt controller
+ */
+static struct irqaction irq2 = {
+ .handler = no_action,
+ .mask = CPU_MASK_NONE,
+ .name = "cascade",
+};
+
/* Overridden in paravirt.c */
void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
@@ -98,6 +107,46 @@ void __init native_init_IRQ(void)
set_intr_gate(vector, interrupt[i]);
}
+#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_SMP)
+ /*
+ * IRQ0 must be given a fixed assignment and initialized,
+ * because it's used before the IO-APIC is set up.
+ */
+ set_intr_gate(FIRST_DEVICE_VECTOR, interrupt[0]);
+
+ /*
+ * The reschedule interrupt is a CPU-to-CPU reschedule-helper
+ * IPI, driven by wakeup.
+ */
+ alloc_intr_gate(RESCHEDULE_VECTOR, reschedule_interrupt);
+
+ /* IPI for invalidation */
+ alloc_intr_gate(INVALIDATE_TLB_VECTOR, invalidate_interrupt);
+
+ /* IPI for generic function call */
+ alloc_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
+
+ /* IPI for single call function */
+ set_intr_gate(CALL_FUNCTION_SINGLE_VECTOR, call_function_single_interrupt);
+#endif
+
+#ifdef CONFIG_X86_LOCAL_APIC
+ /* self generated IPI for local APIC timer */
+ alloc_intr_gate(LOCAL_TIMER_VECTOR, apic_timer_interrupt);
+
+ /* IPI vectors for APIC spurious and error interrupts */
+ alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);
+ alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
+#endif
+
+#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_MCE_P4THERMAL)
+ /* thermal monitor LVT interrupt */
+ alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
+#endif
+
+ if (!acpi_ioapic)
+ setup_irq(2, &irq2);
+
/* setup after call gates are initialised (usually add in
* the architecture specific gates)
*/