ia64/xen-unstable

view xen/include/asm-ia64/linux-xen/asm/iosapic.h @ 9745:19148831ab05

[IA64] add base iosapic files

Add base iosapic files from Linux-2.6.16 in preparation for
Kevin's iosapic changes.

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
author awilliam@xenbuild.aw
date Fri Apr 21 08:56:24 2006 -0600 (2006-04-21)
parents
children eab6fd4949f0
line source
1 #ifndef __ASM_IA64_IOSAPIC_H
2 #define __ASM_IA64_IOSAPIC_H
4 #define IOSAPIC_REG_SELECT 0x0
5 #define IOSAPIC_WINDOW 0x10
6 #define IOSAPIC_EOI 0x40
8 #define IOSAPIC_VERSION 0x1
10 /*
11 * Redirection table entry
12 */
13 #define IOSAPIC_RTE_LOW(i) (0x10+i*2)
14 #define IOSAPIC_RTE_HIGH(i) (0x11+i*2)
16 #define IOSAPIC_DEST_SHIFT 16
18 /*
19 * Delivery mode
20 */
21 #define IOSAPIC_DELIVERY_SHIFT 8
22 #define IOSAPIC_FIXED 0x0
23 #define IOSAPIC_LOWEST_PRIORITY 0x1
24 #define IOSAPIC_PMI 0x2
25 #define IOSAPIC_NMI 0x4
26 #define IOSAPIC_INIT 0x5
27 #define IOSAPIC_EXTINT 0x7
29 /*
30 * Interrupt polarity
31 */
32 #define IOSAPIC_POLARITY_SHIFT 13
33 #define IOSAPIC_POL_HIGH 0
34 #define IOSAPIC_POL_LOW 1
36 /*
37 * Trigger mode
38 */
39 #define IOSAPIC_TRIGGER_SHIFT 15
40 #define IOSAPIC_EDGE 0
41 #define IOSAPIC_LEVEL 1
43 /*
44 * Mask bit
45 */
47 #define IOSAPIC_MASK_SHIFT 16
48 #define IOSAPIC_MASK (1<<IOSAPIC_MASK_SHIFT)
50 #ifndef __ASSEMBLY__
52 #ifdef CONFIG_IOSAPIC
54 #define NR_IOSAPICS 256
56 static inline unsigned int iosapic_read(char __iomem *iosapic, unsigned int reg)
57 {
58 writel(reg, iosapic + IOSAPIC_REG_SELECT);
59 return readl(iosapic + IOSAPIC_WINDOW);
60 }
62 static inline void iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
63 {
64 writel(reg, iosapic + IOSAPIC_REG_SELECT);
65 writel(val, iosapic + IOSAPIC_WINDOW);
66 }
68 static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
69 {
70 writel(vector, iosapic + IOSAPIC_EOI);
71 }
73 extern void __init iosapic_system_init (int pcat_compat);
74 extern int __devinit iosapic_init (unsigned long address,
75 unsigned int gsi_base);
76 #ifdef CONFIG_HOTPLUG
77 extern int iosapic_remove (unsigned int gsi_base);
78 #else
79 #define iosapic_remove(gsi_base) (-EINVAL)
80 #endif /* CONFIG_HOTPLUG */
81 extern int gsi_to_vector (unsigned int gsi);
82 extern int gsi_to_irq (unsigned int gsi);
83 extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
84 unsigned long trigger);
85 extern void iosapic_unregister_intr (unsigned int irq);
86 extern void __init iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
87 unsigned long polarity,
88 unsigned long trigger);
89 extern int __init iosapic_register_platform_intr (u32 int_type,
90 unsigned int gsi,
91 int pmi_vector,
92 u16 eid, u16 id,
93 unsigned long polarity,
94 unsigned long trigger);
95 extern unsigned int iosapic_version (char __iomem *addr);
97 #ifdef CONFIG_NUMA
98 extern void __devinit map_iosapic_to_node (unsigned int, int);
99 #endif
100 #else
101 #define iosapic_system_init(pcat_compat) do { } while (0)
102 #define iosapic_init(address,gsi_base) (-EINVAL)
103 #define iosapic_remove(gsi_base) (-ENODEV)
104 #define iosapic_register_intr(gsi,polarity,trigger) (gsi)
105 #define iosapic_unregister_intr(irq) do { } while (0)
106 #define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger) do { } while (0)
107 #define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
108 polarity,trigger) (gsi)
109 #endif
111 # endif /* !__ASSEMBLY__ */
112 #endif /* __ASM_IA64_IOSAPIC_H */