1 files changed, 110 insertions, 0 deletions

diff --git a/include/asm-ia64/iosapic.h b/include/asm-ia64/iosapic.h
new file mode 100644
index 000000000000..38a7a72791cc
--- /dev/null
+++ b/include/asm-ia64/iosapic.h
@@ -0,0 +1,110 @@
+#ifndef __ASM_IA64_IOSAPIC_H
+#define __ASM_IA64_IOSAPIC_H
+
+#define IOSAPIC_REG_SELECT      0x0
+#define IOSAPIC_WINDOW          0x10
+#define IOSAPIC_EOI             0x40
+
+#define IOSAPIC_VERSION         0x1
+
+/*
+ * Redirection table entry
+ */
+#define IOSAPIC_RTE_LOW(i)      (0x10+i*2)
+#define IOSAPIC_RTE_HIGH(i)     (0x11+i*2)
+
+#define IOSAPIC_DEST_SHIFT              16
+
+/*
+ * Delivery mode
+ */
+#define IOSAPIC_DELIVERY_SHIFT          8
+#define IOSAPIC_FIXED                   0x0
+#define IOSAPIC_LOWEST_PRIORITY 0x1
+#define IOSAPIC_PMI                     0x2
+#define IOSAPIC_NMI                     0x4
+#define IOSAPIC_INIT                    0x5
+#define IOSAPIC_EXTINT                  0x7
+
+/*
+ * Interrupt polarity
+ */
+#define IOSAPIC_POLARITY_SHIFT          13
+#define IOSAPIC_POL_HIGH                0
+#define IOSAPIC_POL_LOW         1
+
+/*
+ * Trigger mode
+ */
+#define IOSAPIC_TRIGGER_SHIFT           15
+#define IOSAPIC_EDGE                    0
+#define IOSAPIC_LEVEL                   1
+
+/*
+ * Mask bit
+ */
+
+#define IOSAPIC_MASK_SHIFT              16
+#define IOSAPIC_MASK                    (1<<IOSAPIC_MASK_SHIFT)
+
+#ifndef __ASSEMBLY__
+
+#ifdef CONFIG_IOSAPIC
+
+#define NR_IOSAPICS                     256
+
+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)
+{
+        writel(reg, iosapic + IOSAPIC_REG_SELECT);
+        writel(val, iosapic + IOSAPIC_WINDOW);
+}
+
+static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
+{
+        writel(vector, iosapic + IOSAPIC_EOI);
+}
+
+extern void __init iosapic_system_init (int pcat_compat);
+extern void __init iosapic_init (unsigned long address,
+                                    unsigned int gsi_base);
+extern int gsi_to_vector (unsigned int gsi);
+extern int gsi_to_irq (unsigned int gsi);
+extern void iosapic_enable_intr (unsigned int vector);
+extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
+                                  unsigned long trigger);
+#ifdef CONFIG_ACPI_DEALLOCATE_IRQ
+extern void iosapic_unregister_intr (unsigned int irq);
+#endif
+extern void __init iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
+                                      unsigned long polarity,
+                                      unsigned long trigger);
+extern int __init iosapic_register_platform_intr (u32 int_type,
+                                           unsigned int gsi,
+                                           int pmi_vector,
+                                           u16 eid, u16 id,
+                                           unsigned long polarity,
+                                           unsigned long trigger);
+extern unsigned int iosapic_version (char __iomem *addr);
+
+extern void iosapic_pci_fixup (int);
+#ifdef CONFIG_NUMA
+extern void __init map_iosapic_to_node (unsigned int, int);
+#endif
+#else
+#define iosapic_system_init(pcat_compat)                        do { } while (0)
+#define iosapic_init(address,gsi_base)                          do { } while (0)
+#define iosapic_register_intr(gsi,polarity,trigger)             (gsi)
+#define iosapic_unregister_intr(irq)                            do { } while (0)
+#define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger)  do { } while (0)
+#define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
+        polarity,trigger)                                       (gsi)
+#endif
+
+# endif /* !__ASSEMBLY__ */
+#endif /* __ASM_IA64_IOSAPIC_H */