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authorJoerg Roedel <joro@8bytes.org>2012-09-26 12:44:48 +0200
committerJoerg Roedel <joro@8bytes.org>2013-01-28 12:17:28 +0100
commit2976fd8417f5744de3bb9109e4f30f353a36b1c0 (patch)
tree7c39a649cacb45c12ccf88aa16783741cbdce037 /arch/x86
parent11b4a1cc3836ac71a214446d350e923c76012368 (diff)
x86, irq: Introduce setup_remapped_irq()
This function does irq-remapping specific interrupt setup like modifying the chip defaults. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/irq_remapping.h9
-rw-r--r--arch/x86/kernel/apic/io_apic.c13
2 files changed, 12 insertions, 10 deletions
diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index 562db68906f8..b30fca156644 100644
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -44,6 +44,9 @@ extern void compose_remapped_msi_msg(struct pci_dev *pdev,
struct msi_msg *msg, u8 hpet_id);
extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
extern void panic_if_irq_remap(const char *msg);
+extern bool setup_remapped_irq(int irq,
+ struct irq_cfg *cfg,
+ struct irq_chip *chip);
static inline bool irq_remapped(struct irq_cfg *cfg)
{
@@ -93,6 +96,12 @@ static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
{
}
+static inline bool setup_remapped_irq(int irq,
+ struct irq_cfg *cfg,
+ struct irq_chip *chip)
+{
+ return false;
+}
#endif /* CONFIG_IRQ_REMAP */
#endif /* __X86_IRQ_REMAPPING_H */
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 110483906dd3..372512219a9b 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1288,11 +1288,8 @@ static void ioapic_register_intr(unsigned int irq, struct irq_cfg *cfg,
fasteoi = false;
}
- if (irq_remapped(cfg)) {
- irq_set_status_flags(irq, IRQ_MOVE_PCNTXT);
- irq_remap_modify_chip_defaults(chip);
+ if (setup_remapped_irq(irq, cfg, chip))
fasteoi = trigger != 0;
- }
hdl = fasteoi ? handle_fasteoi_irq : handle_edge_irq;
irq_set_chip_and_handler_name(irq, chip, hdl,
@@ -3131,10 +3128,7 @@ int setup_msi_irq(struct pci_dev *dev, struct msi_desc *msidesc,
if (!irq_offset)
write_msi_msg(irq, &msg);
- if (irq_remapped(irq_get_chip_data(irq))) {
- irq_set_status_flags(irq, IRQ_MOVE_PCNTXT);
- irq_remap_modify_chip_defaults(chip);
- }
+ setup_remapped_irq(irq, irq_get_chip_data(irq), chip);
irq_set_chip_and_handler_name(irq, chip, handle_edge_irq, "edge");
@@ -3272,8 +3266,7 @@ int default_setup_hpet_msi(unsigned int irq, unsigned int id)
hpet_msi_write(irq_get_handler_data(irq), &msg);
irq_set_status_flags(irq, IRQ_MOVE_PCNTXT);
- if (irq_remapped(irq_get_chip_data(irq)))
- irq_remap_modify_chip_defaults(chip);
+ setup_remapped_irq(irq, irq_get_chip_data(irq), chip);
irq_set_chip_and_handler_name(irq, chip, handle_edge_irq, "edge");
return 0;