3 files changed, 27 insertions, 6 deletions

diff --git a/include/asm-ia64/hw_irq.h b/include/asm-ia64/hw_irq.h
index c054d7a9aaa7..efa1b8f7251d 100644
--- a/include/asm-ia64/hw_irq.h
+++ b/include/asm-ia64/hw_irq.h
@@ -90,13 +90,27 @@ enum {
 extern __u8 isa_irq_to_vector_map[16];
 #define isa_irq_to_vector(x)	isa_irq_to_vector_map[(x)]
 
+struct irq_cfg {
+	ia64_vector vector;
+	cpumask_t domain;
+};
+extern spinlock_t vector_lock;
+extern struct irq_cfg irq_cfg[NR_IRQS];
+#define irq_to_domain(x)	irq_cfg[(x)].domain
+DECLARE_PER_CPU(int[IA64_NUM_VECTORS], vector_irq);
+
 extern struct hw_interrupt_type irq_type_ia64_lsapic;	/* CPU-internal interrupt controller */
 
+extern int bind_irq_vector(int irq, int vector, cpumask_t domain);
 extern int assign_irq_vector (int irq);	/* allocate a free vector */
 extern void free_irq_vector (int vector);
 extern int reserve_irq_vector (int vector);
+extern void __setup_vector_irq(int cpu);
+extern int reassign_irq_vector(int irq, int cpu);
 extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect);
 extern void register_percpu_irq (ia64_vector vec, struct irqaction *action);
+extern int check_irq_used (int irq);
+extern void destroy_and_reserve_irq (unsigned int irq);
 
 static inline void ia64_resend_irq(unsigned int vector)
 {
@@ -113,7 +127,7 @@ extern irq_desc_t irq_desc[NR_IRQS];
 static inline unsigned int
 __ia64_local_vector_to_irq (ia64_vector vec)
 {
-	return (unsigned int) vec;
+	return __get_cpu_var(vector_irq)[vec];
 }
 #endif
 
@@ -131,7 +145,7 @@ __ia64_local_vector_to_irq (ia64_vector vec)
 static inline ia64_vector
 irq_to_vector (int irq)
 {
-	return (ia64_vector) irq;
+	return irq_cfg[irq].vector;
 }
 
 /*
diff --git a/include/asm-ia64/iosapic.h b/include/asm-ia64/iosapic.h
index 421cb6b62a7c..b8f712859140 100644
--- a/include/asm-ia64/iosapic.h
+++ b/include/asm-ia64/iosapic.h
@@ -47,19 +47,21 @@
 #define	IOSAPIC_MASK_SHIFT		16
 #define	IOSAPIC_MASK			(1<<IOSAPIC_MASK_SHIFT)
 
+#define IOSAPIC_VECTOR_MASK		0xffffff00
+
 #ifndef __ASSEMBLY__
 
 #ifdef CONFIG_IOSAPIC
 
 #define NR_IOSAPICS			256
 
-static inline unsigned int iosapic_read(char __iomem *iosapic, unsigned int reg)
+static inline unsigned int __iosapic_read(char __iomem *iosapic, unsigned int reg)
 {
 	writel(reg, iosapic + IOSAPIC_REG_SELECT);
 	return readl(iosapic + IOSAPIC_WINDOW);
 }
 
-static inline void iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
+static inline void __iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
 {
 	writel(reg, iosapic + IOSAPIC_REG_SELECT);
 	writel(val, iosapic + IOSAPIC_WINDOW);
diff --git a/include/asm-ia64/irq.h b/include/asm-ia64/irq.h
index 67221615e317..35b360b82e43 100644
--- a/include/asm-ia64/irq.h
+++ b/include/asm-ia64/irq.h
@@ -14,8 +14,13 @@
 #include <linux/types.h>
 #include <linux/cpumask.h>
 
-#define NR_IRQS		256
-#define NR_IRQ_VECTORS	NR_IRQS
+#define NR_VECTORS	256
+
+#if (NR_VECTORS + 32 * NR_CPUS) < 1024
+#define NR_IRQS (NR_VECTORS + 32 * NR_CPUS)
+#else
+#define NR_IRQS 1024
+#endif
 
 static __inline__ int
 irq_canonicalize (int irq)