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[PATCH] m68k: introduce irq controller

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Introduce irq controller and use it to manage auto vector interrupts.
Introduce setup_irq() which can be used for irq setup.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Roman Zippel
2006-06-25 05:47:00 -07:00
committed by Linus Torvalds
parent 1d174cfb0f
commit b5dc7840b3
12 changed files with 152 additions and 103 deletions
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25
include/asm-m68k/irq.h
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@@ -1,7 +1,8 @@
#ifndef _M68K_IRQ_H_
#define _M68K_IRQ_H_
#include <linux/interrupt.h>
#include <linux/hardirq.h>
#include <linux/spinlock_types.h>
/*
* # of m68k auto vector interrupts
@@ -81,7 +82,7 @@ extern void (*disable_irq)(unsigned int);
struct pt_regs;
extern int cpu_request_irq(unsigned int,
irqreturn_t (*)(int, void *, struct pt_regs *),
int (*)(int, void *, struct pt_regs *),
unsigned long, const char *, void *);
extern void cpu_free_irq(unsigned int, void *);
@@ -103,23 +104,35 @@ extern void cpu_free_irq(unsigned int, void *);
* interrupt source (if it supports chaining).
*/
typedef struct irq_node {
irqreturn_t (*handler)(int, void *, struct pt_regs *);
unsigned long flags;
int (*handler)(int, void *, struct pt_regs *);
void *dev_id;
const char *devname;
struct irq_node *next;
unsigned long flags;
const char *devname;
} irq_node_t;
/*
* This structure has only 4 elements for speed reasons
*/
typedef struct irq_handler {
irqreturn_t (*handler)(int, void *, struct pt_regs *);
int (*handler)(int, void *, struct pt_regs *);
unsigned long flags;
void *dev_id;
const char *devname;
} irq_handler_t;
struct irq_controller {
const char *name;
spinlock_t lock;
int (*startup)(unsigned int irq);
void (*shutdown)(unsigned int irq);
void (*enable)(unsigned int irq);
void (*disable)(unsigned int irq);
};
extern int m68k_irq_startup(unsigned int);
extern void m68k_irq_shutdown(unsigned int);
/* count of spurious interrupts */
extern volatile unsigned int num_spurious;