mirror of https://gitee.com/openkylin/linux.git
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle
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* Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle
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*/
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#ifndef _ASM_IRQ_H
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#define _ASM_IRQ_H
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#include <linux/config.h>
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#include <linux/linkage.h>
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#include <irq.h>
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#ifdef CONFIG_I8259
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static inline int irq_canonicalize(int irq)
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{
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return ((irq == 2) ? 9 : irq);
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}
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#else
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#define irq_canonicalize(irq) (irq) /* Sane hardware, sane code ... */
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#endif
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struct pt_regs;
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#ifdef CONFIG_PREEMPT
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extern asmlinkage unsigned int do_IRQ(unsigned int irq, struct pt_regs *regs);
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#else
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/*
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* do_IRQ handles all normal device IRQ's (the special
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* SMP cross-CPU interrupts have their own specific
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* handlers).
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*
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* Ideally there should be away to get this into kernel/irq/handle.c to
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* avoid the overhead of a call for just a tiny function ...
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*/
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#define do_IRQ(irq, regs) \
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do { \
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irq_enter(); \
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__do_IRQ((irq), (regs)); \
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irq_exit(); \
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} while (0)
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#endif
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extern void arch_init_irq(void);
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#endif /* _ASM_IRQ_H */
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