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include/asm-arm26/irqchip.h
2.7 KB
1da177e4c Linux-2.6.12-rc2 |
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/* * linux/include/asm-arm/mach/irq.h * * Copyright (C) 1995-2000 Russell King. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __ASM_ARM_MACH_IRQ_H #define __ASM_ARM_MACH_IRQ_H struct irqdesc; struct pt_regs; struct seq_file; typedef void (*irq_handler_t)(unsigned int, struct irqdesc *, struct pt_regs *); typedef void (*irq_control_t)(unsigned int); struct irqchip { /* * Acknowledge the IRQ. * If this is a level-based IRQ, then it is expected to mask the IRQ * as well. */ void (*ack)(unsigned int); /* * Mask the IRQ in hardware. */ void (*mask)(unsigned int); /* * Unmask the IRQ in hardware. */ void (*unmask)(unsigned int); /* * Re-run the IRQ */ void (*rerun)(unsigned int); /* * Set the type of the IRQ. */ int (*type)(unsigned int, unsigned int); }; struct irqdesc { irq_handler_t handle; struct irqchip *chip; struct irqaction *action; unsigned int enabled : 1; /* IRQ is currently enabled */ unsigned int triggered: 1; /* IRQ has occurred */ unsigned int running : 1; /* IRQ is running */ unsigned int pending : 1; /* IRQ is pending */ unsigned int probing : 1; /* IRQ in use for a probe */ unsigned int probe_ok : 1; /* IRQ can be used for probe */ unsigned int valid : 1; /* IRQ claimable */ unsigned int noautoenable : 1; /* don't automatically enable IRQ */ unsigned int unused :23; unsigned int depth; /* disable depth */ /* * IRQ lock detection */ unsigned int lck_cnt; unsigned int lck_pc; unsigned int lck_jif; }; extern struct irqdesc irq_desc[]; /* * This is internal. Do not use it. */ extern void (*init_arch_irq)(void); extern void init_FIQ(void); extern int show_fiq_list(struct seq_file *, void *); void __set_irq_handler(unsigned int irq, irq_handler_t, int); /* * External stuff. */ #define set_irq_handler(irq,handler) __set_irq_handler(irq,handler,0) #define set_irq_chained_handler(irq,handler) __set_irq_handler(irq,handler,1) void set_irq_chip(unsigned int irq, struct irqchip *); void set_irq_flags(unsigned int irq, unsigned int flags); #define IRQF_VALID (1 << 0) #define IRQF_PROBE (1 << 1) #define IRQF_NOAUTOEN (1 << 2) /* * Built-in IRQ handlers. */ void do_level_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs); void do_edge_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs); void do_simple_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs); void do_bad_IRQ(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs); void dummy_mask_unmask_irq(unsigned int irq); #endif |