X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Fasm-ia64%2Fhw_irq.h;h=d990e9e57f21aad64bffd2d99f6f7c599c017352;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=a72134370811b1343f3f7033115f295cbd0cd361;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/include/asm-ia64/hw_irq.h b/include/asm-ia64/hw_irq.h
index a72134370..d990e9e57 100644
--- a/include/asm-ia64/hw_irq.h
+++ b/include/asm-ia64/hw_irq.h
@@ -15,7 +15,11 @@
 #include <asm/ptrace.h>
 #include <asm/smp.h>
 
+#ifndef CONFIG_XEN
 typedef u8 ia64_vector;
+#else
+typedef u16 ia64_vector;
+#endif
 
 /*
  * 0 special
@@ -47,9 +51,20 @@ typedef u8 ia64_vector;
 #define IA64_CMC_VECTOR			0x1f	/* corrected machine-check interrupt vector */
 /*
  * Vectors 0x20-0x2f are reserved for legacy ISA IRQs.
+ * Use vectors 0x30-0xe7 as the default device vector range for ia64.
+ * Platforms may choose to reduce this range in platform_irq_setup, but the
+ * platform range must fall within
+ *	[IA64_DEF_FIRST_DEVICE_VECTOR..IA64_DEF_LAST_DEVICE_VECTOR]
  */
-#define IA64_FIRST_DEVICE_VECTOR	0x30
-#define IA64_LAST_DEVICE_VECTOR		0xe7
+extern int ia64_first_device_vector;
+extern int ia64_last_device_vector;
+
+#define IA64_DEF_FIRST_DEVICE_VECTOR	0x30
+#define IA64_DEF_LAST_DEVICE_VECTOR	0xe7
+#define IA64_FIRST_DEVICE_VECTOR	ia64_first_device_vector
+#define IA64_LAST_DEVICE_VECTOR		ia64_last_device_vector
+#define IA64_MAX_DEVICE_VECTORS		(IA64_DEF_LAST_DEVICE_VECTOR - IA64_DEF_FIRST_DEVICE_VECTOR + 1)
+#define IA64_NUM_DEVICE_VECTORS		(IA64_LAST_DEVICE_VECTOR - IA64_FIRST_DEVICE_VECTOR + 1)
 
 #define IA64_MCA_RENDEZ_VECTOR		0xe8	/* MCA rendez interrupt */
 #define IA64_PERFMON_VECTOR		0xee	/* performanc monitor interrupt vector */
@@ -78,17 +93,22 @@ enum {
 extern __u8 isa_irq_to_vector_map[16];
 #define isa_irq_to_vector(x)	isa_irq_to_vector_map[(x)]
 
-extern unsigned long ipi_base_addr;
-
 extern struct hw_interrupt_type irq_type_ia64_lsapic;	/* CPU-internal interrupt controller */
 
 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 ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect);
 extern void register_percpu_irq (ia64_vector vec, struct irqaction *action);
 
-static inline void
-hw_resend_irq (struct hw_interrupt_type *h, unsigned int vector)
+static inline void ia64_resend_irq(unsigned int vector)
 {
+#ifdef CONFIG_XEN
+	extern void resend_irq_on_evtchn(unsigned int i);
+	if (is_running_on_xen())
+		resend_irq_on_evtchn(vector);
+	else
+#endif /* CONFIG_XEN */
 	platform_send_ipi(smp_processor_id(), vector, IA64_IPI_DM_INT, 0);
 }
 
@@ -96,21 +116,9 @@ hw_resend_irq (struct hw_interrupt_type *h, unsigned int vector)
  * Default implementations for the irq-descriptor API:
  */
 
-extern irq_desc_t _irq_desc[NR_IRQS];
+extern irq_desc_t irq_desc[NR_IRQS];
 
 #ifndef CONFIG_IA64_GENERIC
-static inline irq_desc_t *
-__ia64_irq_desc (unsigned int irq)
-{
-	return _irq_desc + irq;
-}
-
-static inline ia64_vector
-__ia64_irq_to_vector (unsigned int irq)
-{
-	return (ia64_vector) irq;
-}
-
 static inline unsigned int
 __ia64_local_vector_to_irq (ia64_vector vec)
 {
@@ -128,18 +136,11 @@ __ia64_local_vector_to_irq (ia64_vector vec)
  * and to obtain the irq descriptor for a given irq number.
  */
 
-/* Return a pointer to the irq descriptor for IRQ.  */
-static inline irq_desc_t *
-irq_descp (int irq)
-{
-	return platform_irq_desc(irq);
-}
-
 /* Extract the IA-64 vector that corresponds to IRQ.  */
 static inline ia64_vector
 irq_to_vector (int irq)
 {
-	return platform_irq_to_vector(irq);
+	return (ia64_vector) irq;
 }
 
 /*