tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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
21extern atomic_t ppc_n_lost_interrupts;
22
23/* This number is used when no interrupt has been assigned */
24#define NO_IRQ (0)
25
26/* Total number of virq in the platform */
27#define NR_IRQS CONFIG_NR_IRQS
28
29/* Same thing, used by the generic IRQ code */
30#define NR_IRQS_LEGACY NUM_ISA_INTERRUPTS
31
32extern irq_hw_number_t virq_to_hw(unsigned int virq);
33
34/**
35 * irq_early_init - Init irq remapping subsystem
36 */
37extern void irq_early_init(void);
38
39static __inline__ int irq_canonicalize(int irq)
40{
41 return irq;
42}
43
44extern int distribute_irqs;
45
46struct irqaction;
47struct pt_regs;
48
49#define __ARCH_HAS_DO_SOFTIRQ
50
51#if defined(CONFIG_BOOKE) || defined(CONFIG_40x)
52/*
53 * Per-cpu stacks for handling critical, debug and machine check
54 * level interrupts.
55 */
56extern struct thread_info *critirq_ctx[NR_CPUS];
57extern struct thread_info *dbgirq_ctx[NR_CPUS];
58extern struct thread_info *mcheckirq_ctx[NR_CPUS];
59extern void exc_lvl_ctx_init(void);
60#else
61#define exc_lvl_ctx_init()
62#endif
63
64/*
65 * Per-cpu stacks for handling hard and soft interrupts.
66 */
67extern struct thread_info *hardirq_ctx[NR_CPUS];
68extern struct thread_info *softirq_ctx[NR_CPUS];
69
70extern void irq_ctx_init(void);
71extern void call_do_softirq(struct thread_info *tp);
72extern int call_handle_irq(int irq, void *p1,
73 struct thread_info *tp, void *func);
74extern void do_IRQ(struct pt_regs *regs);
75
76int irq_choose_cpu(const struct cpumask *mask);
77
78#endif /* _ASM_IRQ_H */
79#endif /* __KERNEL__ */