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#ifndef _M68K_IRQ_H_
#define _M68K_IRQ_H_
extern void disable_irq(unsigned int);
extern void enable_irq(unsigned int);
#include <linux/config.h>
/*
* This should be the same as the max(NUM_X_SOURCES) for all the
* different m68k hosts compiled into the kernel.
* Currently the Atari has 72 and the Amiga 24, but if both are
* supported in the kernel it is better to make room for 72.
*/
#if defined(CONFIG_ATARI)
#define NR_IRQS 72
#else
#define NR_IRQS 24
#endif
/*
* Interrupt source definitions
* General interrupt sources are the level 1-7.
* Adding an interrupt service routine for one of these sources
* results in the addition of that routine to a chain of routines.
* Each one is called in succession. Each individual interrupt
* service routine should determine if the device associated with
* that routine requires service.
*/
#define IRQ1 (1) /* level 1 interrupt */
#define IRQ2 (2) /* level 2 interrupt */
#define IRQ3 (3) /* level 3 interrupt */
#define IRQ4 (4) /* level 4 interrupt */
#define IRQ5 (5) /* level 5 interrupt */
#define IRQ6 (6) /* level 6 interrupt */
#define IRQ7 (7) /* level 7 interrupt (non-maskable) */
/*
* "Generic" interrupt sources
*/
#define IRQ_SCHED_TIMER (8) /* interrupt source for scheduling timer */
/*
* Machine specific interrupt sources.
*
* Adding an interrupt service routine for a source with this bit
* set indicates a special machine specific interrupt source.
* The machine specific files define these sources.
*/
#define IRQ_MACHSPEC (0x10000000L)
#ifndef ISRFUNC_T
struct pt_regs;
typedef void (*isrfunc) (int irq, struct pt_regs * regs, void *data);
#define ISRFUNC_T
#endif /* ISRFUNC_T */
/*
* This structure is used to chain together the ISRs for a particular
* interrupt source (if it supports chaining).
*/
typedef struct isr_node {
isrfunc isr;
int pri;
void *data;
char *name;
struct isr_node *next;
} isr_node_t;
/* count of spurious interrupts */
extern volatile unsigned long num_spurious;
/*
* This function returns a new isr_node_t
*/
extern isr_node_t *new_isr_node(void);
/*
* This function is used to add a specific interrupt service routine
* for the specified interrupt source.
*
* If the source is machine specific, it will be passed along to the
* machine specific routine.
*
* "data" is user specified data which will be passed to the isr routine.
*
* (isrfunc is defined in linux/config.h)
*/
extern int add_isr (unsigned long source, isrfunc isr, int pri, void
*data, char *name);
/*
* This routine will remove an isr for the specified interrupt source.
*/
extern int remove_isr (unsigned long source, isrfunc isr, void *data);
/*
* This routine will insert an isr_node_t into a chain of nodes, using
* the priority stored in the node.
*/
extern void insert_isr (isr_node_t **listp, isr_node_t *node);
/*
* This routine will delete the isr node for isr from a chain of nodes
*/
extern void delete_isr (isr_node_t **listp, isrfunc isr, void *data);
/*
* This routine may be used to call the isr routines in the passed list.
*/
extern void call_isr_list (int irq, isr_node_t *p, struct pt_regs *fp);
#endif /* _M68K_IRQ_H_ */
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