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x2apic/intr-remap: decouple interrupt remapping from x2apic

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interrupt remapping must be enabled before enabling x2apic, but
interrupt remapping doesn't depend on x2apic, it can be used
separately. Enable interrupt remapping in init_dmars even x2apic
is not supported.

[dwmw2: Update Kconfig accordingly, fix build with INTR_REMAP && !X2APIC]

Signed-off-by: Weidong Han <weidong.han@intel.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Han, Weidong
2009-04-03 17:15:50 +08:00
committed by David Woodhouse
parent 34aaaa948e
commit d0b03bd1c6
4 changed files with 35 additions and 8 deletions
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29
arch/x86/kernel/apic/io_apic.c
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@@ -2524,7 +2524,7 @@ static void irq_complete_move(struct irq_desc **descp)
static inline void irq_complete_move(struct irq_desc **descp) {}
#endif
#ifdef CONFIG_INTR_REMAP
#ifdef CONFIG_X86_X2APIC
static void __eoi_ioapic_irq(unsigned int irq, struct irq_cfg *cfg)
{
int apic, pin;
@@ -2569,7 +2569,6 @@ static void ack_x2apic_edge(unsigned int irq)
{
ack_x2APIC_irq();
}
#endif
static void ack_apic_edge(unsigned int irq)
@@ -2680,6 +2679,26 @@ static void ack_apic_level(unsigned int irq)
#endif
}
#ifdef CONFIG_INTR_REMAP
static void ir_ack_apic_edge(unsigned int irq)
{
#ifdef CONFIG_X86_X2APIC
if (x2apic_enabled())
return ack_x2apic_edge(irq);
#endif
return ack_apic_edge(irq);
}
static void ir_ack_apic_level(unsigned int irq)
{
#ifdef CONFIG_X86_X2APIC
if (x2apic_enabled())
return ack_x2apic_level(irq);
#endif
return ack_apic_level(irq);
}
#endif /* CONFIG_INTR_REMAP */
static struct irq_chip ioapic_chip __read_mostly = {
.name = "IO-APIC",
.startup = startup_ioapic_irq,
@@ -2699,8 +2718,8 @@ static struct irq_chip ir_ioapic_chip __read_mostly = {
.mask = mask_IO_APIC_irq,
.unmask = unmask_IO_APIC_irq,
#ifdef CONFIG_INTR_REMAP
.ack = ack_x2apic_edge,
.eoi = ack_x2apic_level,
.ack = ir_ack_apic_edge,
.eoi = ir_ack_apic_level,
#ifdef CONFIG_SMP
.set_affinity = set_ir_ioapic_affinity_irq,
#endif
@@ -3426,7 +3445,7 @@ static struct irq_chip msi_ir_chip = {
.unmask = unmask_msi_irq,
.mask = mask_msi_irq,
#ifdef CONFIG_INTR_REMAP
.ack = ack_x2apic_edge,
.ack = ir_ack_apic_edge,
#ifdef CONFIG_SMP
.set_affinity = ir_set_msi_irq_affinity,
#endif