Contents of /alx-src/tags/kernel26-2.6.12-alx-r9/include/asm-arm26/irqchip.h
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Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
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File size: 2764 byte(s)
Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
File MIME type: text/plain
File size: 2764 byte(s)
Tag kernel26-2.6.12-alx-r9
1 | /* |
2 | * linux/include/asm-arm/mach/irq.h |
3 | * |
4 | * Copyright (C) 1995-2000 Russell King. |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License version 2 as |
8 | * published by the Free Software Foundation. |
9 | */ |
10 | #ifndef __ASM_ARM_MACH_IRQ_H |
11 | #define __ASM_ARM_MACH_IRQ_H |
12 | |
13 | struct irqdesc; |
14 | struct pt_regs; |
15 | struct seq_file; |
16 | |
17 | typedef void (*irq_handler_t)(unsigned int, struct irqdesc *, struct pt_regs *); |
18 | typedef void (*irq_control_t)(unsigned int); |
19 | |
20 | struct irqchip { |
21 | /* |
22 | * Acknowledge the IRQ. |
23 | * If this is a level-based IRQ, then it is expected to mask the IRQ |
24 | * as well. |
25 | */ |
26 | void (*ack)(unsigned int); |
27 | /* |
28 | * Mask the IRQ in hardware. |
29 | */ |
30 | void (*mask)(unsigned int); |
31 | /* |
32 | * Unmask the IRQ in hardware. |
33 | */ |
34 | void (*unmask)(unsigned int); |
35 | /* |
36 | * Re-run the IRQ |
37 | */ |
38 | void (*rerun)(unsigned int); |
39 | /* |
40 | * Set the type of the IRQ. |
41 | */ |
42 | int (*type)(unsigned int, unsigned int); |
43 | }; |
44 | |
45 | struct irqdesc { |
46 | irq_handler_t handle; |
47 | struct irqchip *chip; |
48 | struct irqaction *action; |
49 | |
50 | unsigned int enabled : 1; /* IRQ is currently enabled */ |
51 | unsigned int triggered: 1; /* IRQ has occurred */ |
52 | unsigned int running : 1; /* IRQ is running */ |
53 | unsigned int pending : 1; /* IRQ is pending */ |
54 | unsigned int probing : 1; /* IRQ in use for a probe */ |
55 | unsigned int probe_ok : 1; /* IRQ can be used for probe */ |
56 | unsigned int valid : 1; /* IRQ claimable */ |
57 | unsigned int noautoenable : 1; /* don't automatically enable IRQ */ |
58 | unsigned int unused :23; |
59 | unsigned int depth; /* disable depth */ |
60 | |
61 | /* |
62 | * IRQ lock detection |
63 | */ |
64 | unsigned int lck_cnt; |
65 | unsigned int lck_pc; |
66 | unsigned int lck_jif; |
67 | }; |
68 | |
69 | extern struct irqdesc irq_desc[]; |
70 | |
71 | /* |
72 | * This is internal. Do not use it. |
73 | */ |
74 | extern void (*init_arch_irq)(void); |
75 | extern void init_FIQ(void); |
76 | extern int show_fiq_list(struct seq_file *, void *); |
77 | void __set_irq_handler(unsigned int irq, irq_handler_t, int); |
78 | |
79 | /* |
80 | * External stuff. |
81 | */ |
82 | #define set_irq_handler(irq,handler) __set_irq_handler(irq,handler,0) |
83 | #define set_irq_chained_handler(irq,handler) __set_irq_handler(irq,handler,1) |
84 | |
85 | void set_irq_chip(unsigned int irq, struct irqchip *); |
86 | void set_irq_flags(unsigned int irq, unsigned int flags); |
87 | |
88 | #define IRQF_VALID (1 << 0) |
89 | #define IRQF_PROBE (1 << 1) |
90 | #define IRQF_NOAUTOEN (1 << 2) |
91 | |
92 | /* |
93 | * Built-in IRQ handlers. |
94 | */ |
95 | void do_level_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs); |
96 | void do_edge_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs); |
97 | void do_simple_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs); |
98 | void do_bad_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs); |
99 | void dummy_mask_unmask_irq(unsigned int irq); |
100 | |
101 | #endif |