tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#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
50#ifndef __ASSEMBLY__
51
52#ifdef CONFIG_IOSAPIC
53
54#define NR_IOSAPICS 256
55
56static 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}
61
62static 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}
67
68static inline void iosapic_eoi(char __iomem *iosapic, u32 vector)
69{
70 writel(vector, iosapic + IOSAPIC_EOI);
71}
72
73extern void __init iosapic_system_init (int pcat_compat);
74extern int __devinit iosapic_init (unsigned long address,
75 unsigned int gsi_base);
76#ifdef CONFIG_HOTPLUG
77extern int iosapic_remove (unsigned int gsi_base);
78#else
79#define iosapic_remove(gsi_base) (-EINVAL)
80#endif /* CONFIG_HOTPLUG */
81extern int gsi_to_vector (unsigned int gsi);
82extern int gsi_to_irq (unsigned int gsi);
83extern int iosapic_register_intr (unsigned int gsi, unsigned long polarity,
84 unsigned long trigger);
85extern void iosapic_unregister_intr (unsigned int irq);
86extern void __init iosapic_override_isa_irq (unsigned int isa_irq, unsigned int gsi,
87 unsigned long polarity,
88 unsigned long trigger);
89extern 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);
95extern unsigned int iosapic_version (char __iomem *addr);
96
97#ifdef CONFIG_NUMA
98extern 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
110
111# endif /* !__ASSEMBLY__ */
112#endif /* __ASM_IA64_IOSAPIC_H */