irq.h
上传用户:lgb322
上传日期:2013-02-24
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文件大小:1k
- #ifndef _ASM_IA64_IRQ_H
- #define _ASM_IA64_IRQ_H
- /*
- * Copyright (C) 1999-2000 Hewlett-Packard Co
- * Copyright (C) 1998-2000 David Mosberger-Tang <davidm@hpl.hp.com>
- * Copyright (C) 1998 Stephane Eranian <eranian@hpl.hp.com>
- *
- * 11/24/98 S.Eranian updated TIMER_IRQ and irq_cannonicalize
- * 01/20/99 S.Eranian added keyboard interrupt
- * 02/29/00 D.Mosberger moved most things into hw_irq.h
- */
- #define NR_IRQS 256
- static __inline__ int
- irq_cannonicalize (int irq)
- {
- /*
- * We do the legacy thing here of pretending that irqs < 16
- * are 8259 irqs. This really shouldn't be necessary at all,
- * but we keep it here as serial.c still uses it...
- */
- return ((irq == 2) ? 9 : irq);
- }
- extern void disable_irq (unsigned int);
- extern void disable_irq_nosync (unsigned int);
- extern void enable_irq (unsigned int);
- #endif /* _ASM_IA64_IRQ_H */