diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 3e4bea3..c535878 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -173,7 +173,9 @@
 };
 
 struct device_node;
+struct irq_domain;
 struct irq_domain_ops;
+
 struct ioapic_domain_cfg {
 	enum ioapic_domain_type		type;
 	const struct irq_domain_ops	*ops;
@@ -192,6 +194,9 @@
 extern int mp_map_gsi_to_irq(u32 gsi, unsigned int flags);
 extern void __init mp_register_ioapic(int id, u32 address, u32 gsi_base,
 				      struct ioapic_domain_cfg *cfg);
+extern int mp_irqdomain_map(struct irq_domain *domain, unsigned int virq,
+			    irq_hw_number_t hwirq);
+extern int mp_set_gsi_attr(u32 gsi, int trigger, int polarity, int node);
 extern void __init pre_init_apic_IRQ0(void);
 
 extern void mp_save_irq(struct mpc_intsrc *m);