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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1#ifdef __KERNEL__
2#ifndef _ASM_POWERPC_IRQ_H
3#define _ASM_POWERPC_IRQ_H
4
5/*
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
10 */
11
12#include <linux/irqdomain.h>
13#include <linux/threads.h>
14#include <linux/list.h>
15#include <linux/radix-tree.h>
16
17#include <asm/types.h>
18#include <linux/atomic.h>
19
20
21/* Define a way to iterate across irqs. */
22#define for_each_irq(i) \
23 for ((i) = 0; (i) < NR_IRQS; ++(i))
24
25extern atomic_t ppc_n_lost_interrupts;
26
27/* This number is used when no interrupt has been assigned */
28#define NO_IRQ (0)
29
30/* Total number of virq in the platform */
31#define NR_IRQS CONFIG_NR_IRQS
32
33/* Same thing, used by the generic IRQ code */
34#define NR_IRQS_LEGACY NUM_ISA_INTERRUPTS
35
36extern irq_hw_number_t virq_to_hw(unsigned int virq);
37
38/**
39 * irq_early_init - Init irq remapping subsystem
40 */
41extern void irq_early_init(void);
42
43static __inline__ int irq_canonicalize(int irq)
44{
45 return irq;
46}
47
48extern int distribute_irqs;
49
50struct irqaction;
51struct pt_regs;
52
53#define __ARCH_HAS_DO_SOFTIRQ
54
55#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
56/*
57 * Per-cpu stacks for handling critical, debug and machine check
58 * level interrupts.
59 */
60extern struct thread_info *critirq_ctx[NR_CPUS];
61extern struct thread_info *dbgirq_ctx[NR_CPUS];
62extern struct thread_info *mcheckirq_ctx[NR_CPUS];
63extern void exc_lvl_ctx_init(void);
64#else
65#define exc_lvl_ctx_init()
66#endif
67
68/*
69 * Per-cpu stacks for handling hard and soft interrupts.
70 */
71extern struct thread_info *hardirq_ctx[NR_CPUS];
72extern struct thread_info *softirq_ctx[NR_CPUS];
73
74extern void irq_ctx_init(void);
75extern void call_do_softirq(struct thread_info *tp);
76extern int call_handle_irq(int irq, void *p1,
77 struct thread_info *tp, void *func);
78extern void do_IRQ(struct pt_regs *regs);
79
80int irq_choose_cpu(const struct cpumask *mask);
81
82#endif /* _ASM_IRQ_H */
83#endif /* __KERNEL__ */