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linux
1/*
2 * include/asm-parisc/irq.h
3 *
4 * Copyright 2005 Matthew Wilcox <matthew@wil.cx>
5 */
6
7#ifndef _ASM_PARISC_IRQ_H
8#define _ASM_PARISC_IRQ_H
9
10#include <linux/config.h>
11#include <asm/types.h>
12
13#define NO_IRQ (-1)
14
15#ifdef CONFIG_GSC
16#define GSC_IRQ_BASE 16
17#define GSC_IRQ_MAX 63
18#define CPU_IRQ_BASE 64
19#else
20#define CPU_IRQ_BASE 16
21#endif
22
23#define TIMER_IRQ (CPU_IRQ_BASE + 0)
24#define IPI_IRQ (CPU_IRQ_BASE + 1)
25#define CPU_IRQ_MAX (CPU_IRQ_BASE + (BITS_PER_LONG - 1))
26
27#define NR_IRQS (CPU_IRQ_MAX + 1)
28
29/*
30 * IRQ line status macro IRQ_PER_CPU is used
31 */
32#define ARCH_HAS_IRQ_PER_CPU
33
34static __inline__ int irq_canonicalize(int irq)
35{
36 return (irq == 2) ? 9 : irq;
37}
38
39struct hw_interrupt_type;
40
41/*
42 * Some useful "we don't have to do anything here" handlers. Should
43 * probably be provided by the generic code.
44 */
45void no_ack_irq(unsigned int irq);
46void no_end_irq(unsigned int irq);
47
48extern int txn_alloc_irq(unsigned int nbits);
49extern int txn_claim_irq(int);
50extern unsigned int txn_alloc_data(unsigned int);
51extern unsigned long txn_alloc_addr(unsigned int);
52
53extern int cpu_claim_irq(unsigned int irq, struct hw_interrupt_type *, void *);
54
55extern int cpu_claim_irq(unsigned int irq, struct hw_interrupt_type *, void *);
56
57/* soft power switch support (power.c) */
58extern struct tasklet_struct power_tasklet;
59
60#endif /* _ASM_PARISC_IRQ_H */