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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
Isaku Yamahata33b39e82008-05-19 22:13:42 +090058#ifdef CONFIG_PARAVIRT_GUEST
59#include <asm/paravirt.h>
60#else
61#define iosapic_pcat_compat_init ia64_native_iosapic_pcat_compat_init
62#define __iosapic_read __ia64_native_iosapic_read
63#define __iosapic_write __ia64_native_iosapic_write
64#define iosapic_get_irq_chip ia64_native_iosapic_get_irq_chip
65#endif
66
67extern void __init ia64_native_iosapic_pcat_compat_init(void);
68extern struct irq_chip *ia64_native_iosapic_get_irq_chip(unsigned long trigger);
69
70static inline unsigned int
71__ia64_native_iosapic_read(char __iomem *iosapic, unsigned int reg)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072{
73 writel(reg, iosapic + IOSAPIC_REG_SELECT);
74 return readl(iosapic + IOSAPIC_WINDOW);
75}
76
Isaku Yamahata33b39e82008-05-19 22:13:42 +090077static inline void
78__ia64_native_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079{
80 writel(reg, iosapic + IOSAPIC_REG_SELECT);
81 writel(val, iosapic + IOSAPIC_WINDOW);
82}
83
84static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
85{
86 writel(vector, iosapic + IOSAPIC_EOI);
87}
88
89extern void __init iosapic_system_init (int pcat_compat);
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -070090extern int __devinit iosapic_init (unsigned long address,
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 unsigned int gsi_base);
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -070092#ifdef CONFIG_HOTPLUG
93extern int iosapic_remove (unsigned int gsi_base);
Kenji Kaneshige1c53e432005-08-10 02:49:00 -070094#else
95#define iosapic_remove(gsi_base) (-EINVAL)
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -070096#endif /* CONFIG_HOTPLUG */
Linus Torvalds1da177e2005-04-16 15:20:36 -070097extern int gsi_to_irq (unsigned int gsi);
Linus Torvalds1da177e2005-04-16 15:20:36 -070098extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
99 unsigned long trigger);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100extern void iosapic_unregister_intr (unsigned int irq);
Tony Luck0f7ac292007-05-07 13:17:00 -0700101extern void __devinit iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 unsigned long polarity,
103 unsigned long trigger);
104extern int __init iosapic_register_platform_intr (u32 int_type,
105 unsigned int gsi,
106 int pmi_vector,
107 u16 eid, u16 id,
108 unsigned long polarity,
109 unsigned long trigger);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111#ifdef CONFIG_NUMA
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -0700112extern void __devinit map_iosapic_to_node (unsigned int, int);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113#endif
114#else
115#define iosapic_system_init(pcat_compat) do { } while (0)
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -0700116#define iosapic_init(address,gsi_base) (-EINVAL)
Kenji Kaneshige0e888ad2005-04-28 00:25:58 -0700117#define iosapic_remove(gsi_base) (-ENODEV)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118#define iosapic_register_intr(gsi,polarity,trigger) (gsi)
119#define iosapic_unregister_intr(irq) do { } while (0)
120#define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger) do { } while (0)
121#define iosapic_register_platform_intr(type,gsi,pmi,eid,id, \
122 polarity,trigger) (gsi)
123#endif
124
125# endif /* !__ASSEMBLY__ */
126#endif /* __ASM_IA64_IOSAPIC_H */