irq.h
上传用户:jlfgdled
上传日期:2013-04-10
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文件大小:2k
- /*
- * linux/include/asm-parisc/irq.h
- *
- * (C) 1992, 1993 Linus Torvalds, (C) 1997 Ingo Molnar,
- * Copyright 1999 SuSE GmbH
- *
- * IRQ/IPI changes taken from work by Thomas Radke
- * <tomsoft@informatik.tu-chemnitz.de>
- */
- #ifndef _ASM_PARISC_IRQ_H
- #define _ASM_PARISC_IRQ_H
- #include <asm/ptrace.h>
- #include <asm/types.h>
- #include <linux/string.h>
- #include <linux/interrupt.h>
- #define CPU_IRQ_REGION 1
- #define TIMER_IRQ (IRQ_FROM_REGION(CPU_IRQ_REGION) | 0)
- #define IPI_IRQ (IRQ_FROM_REGION(CPU_IRQ_REGION) | 1)
- /* This should be 31 for PA1.1 binaries and 63 for PA-2.0 wide mode */
- #define MAX_CPU_IRQ (BITS_PER_LONG - 1)
- #if BITS_PER_LONG == 32
- # define IRQ_REGION_SHIFT 5
- #else
- # define IRQ_REGION_SHIFT 6
- #endif
- #define IRQ_PER_REGION (1 << IRQ_REGION_SHIFT)
- #define NR_IRQ_REGS 16
- #define NR_IRQS (NR_IRQ_REGS * IRQ_PER_REGION)
- #define IRQ_REGION(irq) ((irq) >> IRQ_REGION_SHIFT)
- #define IRQ_OFFSET(irq) ((irq) & ((1<<IRQ_REGION_SHIFT)-1))
- #define IRQ_FROM_REGION(reg) ((reg) << IRQ_REGION_SHIFT)
- #define EISA_IRQ_REGION 0 /* region 0 needs to be reserved for EISA */
- #define EISA_MAX_IRQS 16 /* max. (E)ISA irq line */
- struct irq_region_ops {
- void (*disable_irq)(void *dev, int irq);
- void (* enable_irq)(void *dev, int irq);
- void (* mask_irq)(void *dev, int irq);
- void (* unmask_irq)(void *dev, int irq);
- };
- struct irq_region_data {
- void *dev;
- const char *name;
- int irqbase;
- unsigned int status[IRQ_PER_REGION]; /* IRQ status */
- };
- struct irq_region {
- struct irq_region_ops ops;
- struct irq_region_data data;
- struct irqaction *action;
- };
- extern struct irq_region *irq_region[NR_IRQ_REGS];
- static __inline__ int irq_cannonicalize(int irq)
- {
- #ifdef CONFIG_EISA
- return (irq == (IRQ_FROM_REGION(EISA_IRQ_REGION)+2)
- ? (IRQ_FROM_REGION(EISA_IRQ_REGION)+9) : irq);
- #else
- return irq;
- #endif
- }
- extern void disable_irq(int);
- #define disable_irq_nosync(i) disable_irq(i)
- extern void enable_irq(int);
- extern void do_irq(struct irqaction *a, int i, struct pt_regs *p);
- extern void do_irq_mask(unsigned long mask, struct irq_region *region,
- struct pt_regs *regs);
- extern struct irq_region *alloc_irq_region(int count, struct irq_region_ops *ops,
- const char *name, void *dev);
- extern int txn_alloc_irq(void);
- extern int txn_claim_irq(int);
- extern unsigned int txn_alloc_data(int, unsigned int);
- extern unsigned long txn_alloc_addr(int);
- /* soft power switch support (power.c) */
- extern struct tasklet_struct power_tasklet;
- #endif /* _ASM_PARISC_IRQ_H */