tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
7 * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle
8 */
9#ifndef _ASM_IRQ_H
10#define _ASM_IRQ_H
11
12#include <linux/linkage.h>
13#include <linux/smp.h>
14#include <linux/irqdomain.h>
15
16#include <asm/mipsmtregs.h>
17
18#include <irq.h>
19
20#ifdef CONFIG_I8259
21static inline int irq_canonicalize(int irq)
22{
23 return ((irq == I8259A_IRQ_BASE + 2) ? I8259A_IRQ_BASE + 9 : irq);
24}
25#else
26#define irq_canonicalize(irq) (irq) /* Sane hardware, sane code ... */
27#endif
28
29extern void do_IRQ(unsigned int irq);
30
31extern void arch_init_irq(void);
32extern void spurious_interrupt(void);
33
34extern int allocate_irqno(void);
35extern void alloc_legacy_irqno(void);
36extern void free_irqno(unsigned int irq);
37
38/*
39 * Before R2 the timer and performance counter interrupts were both fixed to
40 * IE7. Since R2 their number has to be read from the c0_intctl register.
41 */
42#define CP0_LEGACY_COMPARE_IRQ 7
43#define CP0_LEGACY_PERFCNT_IRQ 7
44
45extern int cp0_compare_irq;
46extern int cp0_compare_irq_shift;
47extern int cp0_perfcount_irq;
48
49#endif /* _ASM_IRQ_H */