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x86: factor out irq initialization for x86_64

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Provide apic_intr_init and smp_intr_init functions.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Glauber Costa 2008-07-11 15:08:39 -03:00 • committed by Ingo Molnar
parent 2ff298372d
commit 2f97435e57
1 changed files with 28 additions and 15 deletions
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43
arch/x86/kernel/irqinit_64.c
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@ -164,22 +164,8 @@ static void __init init_ISA_irqs (void)
void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ"))); void init_IRQ(void) __attribute__((weak, alias("native_init_IRQ")));
void __init native_init_IRQ(void) void __init smp_intr_init(void)
{ {
int i;
init_ISA_irqs();
/*
* Cover the whole vector space, no vector can escape
* us. (some of these will be overridden and become
* 'special' SMP interrupts)
*/
for (i = 0; i < (NR_VECTORS - FIRST_EXTERNAL_VECTOR); i++) {
int vector = FIRST_EXTERNAL_VECTOR + i;
if (vector != IA32_SYSCALL_VECTOR)
set_intr_gate(vector, interrupt[i]);
}
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
/* /*
* The reschedule interrupt is a CPU-to-CPU reschedule-helper * The reschedule interrupt is a CPU-to-CPU reschedule-helper
@ -207,6 +193,14 @@ void __init native_init_IRQ(void)
/* Low priority IPI to cleanup after moving an irq */ /* Low priority IPI to cleanup after moving an irq */
set_intr_gate(IRQ_MOVE_CLEANUP_VECTOR, irq_move_cleanup_interrupt); set_intr_gate(IRQ_MOVE_CLEANUP_VECTOR, irq_move_cleanup_interrupt);
#endif #endif
}
void __init apic_intr_init(void)
{
#ifdef CONFIG_SMP
smp_intr_init();
#endif
alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt); alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
alloc_intr_gate(THRESHOLD_APIC_VECTOR, threshold_interrupt); alloc_intr_gate(THRESHOLD_APIC_VECTOR, threshold_interrupt);
@ -216,6 +210,25 @@ void __init native_init_IRQ(void)
/* IPI vectors for APIC spurious and error interrupts */ /* IPI vectors for APIC spurious and error interrupts */
alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt); alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);
alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt); alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
}
void __init native_init_IRQ(void)
{
int i;
init_ISA_irqs();
/*
* Cover the whole vector space, no vector can escape
* us. (some of these will be overridden and become
* 'special' SMP interrupts)
*/
for (i = 0; i < (NR_VECTORS - FIRST_EXTERNAL_VECTOR); i++) {
int vector = FIRST_EXTERNAL_VECTOR + i;
if (vector != IA32_SYSCALL_VECTOR)
set_intr_gate(vector, interrupt[i]);
}
apic_intr_init();
if (!acpi_ioapic) if (!acpi_ioapic)
setup_irq(2, &irq2); setup_irq(2, &irq2);