664399e1fb
This is part of Thomas Gleixner's generic IRQ patch, which converts ARM to use the generic IRQ subsystem. Here, we wrap calls to desc->handler() in an inline function, desc_handle_irq(). This reduces the size of Thomas' patch since the changes become more localised. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
136 lines
3.6 KiB
C
136 lines
3.6 KiB
C
/*
|
|
* 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);
|
|
/*
|
|
* Ask the hardware to re-trigger the IRQ.
|
|
* Note: This method _must_ _not_ call the interrupt handler.
|
|
* If you are unable to retrigger the interrupt, do not
|
|
* provide a function, or if you do, return non-zero.
|
|
*/
|
|
int (*retrigger)(unsigned int);
|
|
/*
|
|
* Set the type of the IRQ.
|
|
*/
|
|
int (*set_type)(unsigned int, unsigned int);
|
|
/*
|
|
* Set wakeup-enable on the selected IRQ
|
|
*/
|
|
int (*set_wake)(unsigned int, unsigned int);
|
|
|
|
#ifdef CONFIG_SMP
|
|
/*
|
|
* Route an interrupt to a CPU
|
|
*/
|
|
void (*set_cpu)(struct irqdesc *desc, unsigned int irq, unsigned int cpu);
|
|
#endif
|
|
};
|
|
|
|
struct irqdesc {
|
|
irq_handler_t handle;
|
|
struct irqchip *chip;
|
|
struct irqaction *action;
|
|
struct list_head pend;
|
|
void *chipdata;
|
|
void *data;
|
|
unsigned int disable_depth;
|
|
|
|
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 :25;
|
|
|
|
struct proc_dir_entry *procdir;
|
|
|
|
#ifdef CONFIG_SMP
|
|
cpumask_t affinity;
|
|
unsigned int cpu;
|
|
#endif
|
|
|
|
/*
|
|
* IRQ lock detection
|
|
*/
|
|
unsigned int lck_cnt;
|
|
unsigned int lck_pc;
|
|
unsigned int lck_jif;
|
|
};
|
|
|
|
extern struct irqdesc irq_desc[];
|
|
|
|
/*
|
|
* Helpful inline function for calling irq descriptor handlers.
|
|
*/
|
|
static inline void desc_handle_irq(unsigned int irq, struct irqdesc *desc, struct pt_regs *regs)
|
|
{
|
|
desc->handle(irq, desc, regs);
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
#define set_irq_data(irq,d) do { irq_desc[irq].data = d; } while (0)
|
|
#define set_irq_chipdata(irq,d) do { irq_desc[irq].chipdata = d; } while (0)
|
|
#define get_irq_chipdata(irq) (irq_desc[irq].chipdata)
|
|
|
|
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
|