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jcastillo |
#ifndef _I960_IRQ_H_
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#define _I960_IRQ_H_
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/* FIXME not touched yet */
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extern void disable_irq(unsigned int);
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extern void enable_irq(unsigned int);
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#include <linux/config.h>
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/*
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* # of i960 interrupts
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*/
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#define SYS_IRQS 8
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/*
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* This should be the same as the max(NUM_X_SOURCES) for all the
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* different m68k hosts compiled into the kernel.
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* Currently the Atari has 72 and the Amiga 24, but if both are
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* supported in the kernel it is better to make room for 72.
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*/
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#if defined(CONFIG_ATARI)
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#define NR_IRQS (72+SYS_IRQS)
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#else
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#define NR_IRQS (24+SYS_IRQS)
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#endif
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/*
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* Interrupt source definitions
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* General interrupt sources are the level 1-7.
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* Adding an interrupt service routine for one of these sources
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* results in the addition of that routine to a chain of routines.
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* Each one is called in succession. Each individual interrupt
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* service routine should determine if the device associated with
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* that routine requires service.
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*/
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#define IRQ1 (1) /* level 1 interrupt */
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#define IRQ2 (2) /* level 2 interrupt */
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#define IRQ3 (3) /* level 3 interrupt */
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#define IRQ4 (4) /* level 4 interrupt */
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#define IRQ5 (5) /* level 5 interrupt */
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#define IRQ6 (6) /* level 6 interrupt */
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#define IRQ7 (7) /* level 7 interrupt (non-maskable) */
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/*
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* "Generic" interrupt sources
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*/
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#define IRQ_SCHED_TIMER (8) /* interrupt source for scheduling timer */
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/*
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* Machine specific interrupt sources.
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*
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* Adding an interrupt service routine for a source with this bit
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* set indicates a special machine specific interrupt source.
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* The machine specific files define these sources.
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*/
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#define IRQ_MACHSPEC (0x10000000L)
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#define IRQ_IDX(irq) ((irq) & ~IRQ_MACHSPEC)
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/*
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* various flags for request_irq()
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*/
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#define IRQ_FLG_LOCK (0x0001) /* handler is not replaceable */
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#define IRQ_FLG_REPLACE (0x0002) /* replace existing handler */
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#define IRQ_FLG_FAST (0x0004)
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#define IRQ_FLG_SLOW (0x0008)
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#define IRQ_FLG_STD (0x8000) /* internally used */
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/*
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* This structure is used to chain together the ISRs for a particular
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* interrupt source (if it supports chaining).
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*/
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typedef struct irq_node {
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void (*handler)(int, void *, struct pt_regs *);
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unsigned long flags;
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void *dev_id;
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const char *devname;
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struct irq_node *next;
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} irq_node_t;
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/*
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* This structure has only 4 elements for speed reasons
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*/
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typedef struct irq_handler {
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void (*handler)(int, void *, struct pt_regs *);
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unsigned long flags;
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void *dev_id;
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const char *devname;
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} irq_handler_t;
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/* count of spurious interrupts */
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extern volatile unsigned int num_spurious;
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/*
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* This function returns a new irq_node_t
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*/
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extern irq_node_t *new_irq_node(void);
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#endif /* _I960_IRQ_H_ */
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