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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __ASM_IA64_IOSAPIC_H
2#define __ASM_IA64_IOSAPIC_H
3
4#define IOSAPIC_REG_SELECT 0x0
5#define IOSAPIC_WINDOW 0x10
6#define IOSAPIC_EOI 0x40
7
8#define IOSAPIC_VERSION 0x1
9
10/*
11 * Redirection table entry
12 */
13#define IOSAPIC_RTE_LOW(i) (0x10+i*2)
14#define IOSAPIC_RTE_HIGH(i) (0x11+i*2)
15
16#define IOSAPIC_DEST_SHIFT 16
17
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
28
29/*
30 * Interrupt polarity
31 */
32#define IOSAPIC_POLARITY_SHIFT 13
33#define IOSAPIC_POL_HIGH 0
34#define IOSAPIC_POL_LOW 1
35
36/*
37 * Trigger mode
38 */
39#define IOSAPIC_TRIGGER_SHIFT 15
40#define IOSAPIC_EDGE 0
41#define IOSAPIC_LEVEL 1
42
43/*
44 * Mask bit
45 */
46
47#define IOSAPIC_MASK_SHIFT 16
48#define IOSAPIC_MASK (1<<IOSAPIC_MASK_SHIFT)
49
Yasuaki Ishimatsucd378f12007-07-17 21:22:48 +090050#define IOSAPIC_VECTOR_MASK 0xffffff00
51
Linus Torvalds1da177e2005-04-16 15:20:36 -070052#ifndef __ASSEMBLY__
53
54#ifdef CONFIG_IOSAPIC
55
56#define NR_IOSAPICS 256
57
Yasuaki Ishimatsuc1726d62007-07-17 21:21:26 +090058static inline unsigned int __iosapic_read(char __iomem *iosapic, unsigned int reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -070059{
60 writel(reg, iosapic + IOSAPIC_REG_SELECT);
61 return readl(iosapic + IOSAPIC_WINDOW);
62}
63
Yasuaki Ishimatsuc1726d62007-07-17 21:21:26 +090064static inline void __iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -070065{
66 writel(reg, iosapic + IOSAPIC_REG_SELECT);
67 writel(val, iosapic + IOSAPIC_WINDOW);
68}
69
70static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
71{
72 writel(vector, iosapic + IOSAPIC_EOI);
73}
74
75extern void __init iosapic_system_init (int pcat_compat);
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -070076extern int __devinit iosapic_init (unsigned long address,
Linus Torvalds1da177e2005-04-16 15:20:36 -070077 unsigned int gsi_base);
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -070078#ifdef CONFIG_HOTPLUG
79extern int iosapic_remove (unsigned int gsi_base);
Kenji Kaneshige1c53e432005-08-10 02:49:00 -070080#else
81#define iosapic_remove(gsi_base) (-EINVAL)
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -070082#endif /* CONFIG_HOTPLUG */
Linus Torvalds1da177e2005-04-16 15:20:36 -070083extern int gsi_to_vector (unsigned int gsi);
84extern int gsi_to_irq (unsigned int gsi);
Linus Torvalds1da177e2005-04-16 15:20:36 -070085extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
86 unsigned long trigger);
Linus Torvalds1da177e2005-04-16 15:20:36 -070087extern void iosapic_unregister_intr (unsigned int irq);
Tony Luck0f7ac292007-05-07 13:17:00 -070088extern void __devinit iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 unsigned long polarity,
90 unsigned long trigger);
91extern int __init iosapic_register_platform_intr (u32 int_type,
92 unsigned int gsi,
93 int pmi_vector,
94 u16 eid, u16 id,
95 unsigned long polarity,
96 unsigned long trigger);
97extern unsigned int iosapic_version (char __iomem *addr);
98
Linus Torvalds1da177e2005-04-16 15:20:36 -070099#ifdef CONFIG_NUMA
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -0700100extern void __devinit map_iosapic_to_node (unsigned int, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700101#endif
102#else
103#define iosapic_system_init(pcat_compat) do { } while (0)
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -0700104#define iosapic_init(address,gsi_base) (-EINVAL)
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -0700105#define iosapic_remove(gsi_base) (-ENODEV)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106#define iosapic_register_intr(gsi,polarity,trigger) (gsi)
107#define iosapic_unregister_intr(irq) do { } while (0)
108#define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger) do { } while (0)
109#define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
110 polarity,trigger) (gsi)
111#endif
112
113# endif /* !__ASSEMBLY__ */
114#endif /* __ASM_IA64_IOSAPIC_H */