irq.h

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#ifndef _M68K_IRQ_H_
#define _M68K_IRQ_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_COLDFIRE)
#define NR_IRQS 256
#elif defined(CONFIG_VME) || defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
#define NR_IRQS 200
#elif defined(CONFIG_ATARI) || defined(CONFIG_MAC)
#define NR_IRQS 72
#elif defined(CONFIG_Q40)
#define NR_IRQS 43
#elif defined(CONFIG_AMIGA) || !defined(CONFIG_MMU)
#define NR_IRQS 32
#elif defined(CONFIG_APOLLO)
#define NR_IRQS 24
#elif defined(CONFIG_HP300)
#define NR_IRQS 8
#else
#define NR_IRQS 0
#endif

#if defined(CONFIG_M68020) || defined(CONFIG_M68030) || \
    defined(CONFIG_M68040) || defined(CONFIG_M68060)

/*
 * 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 IRQ_SPURIOUS    0

#define IRQ_AUTO_1  1   /* level 1 interrupt */
#define IRQ_AUTO_2  2   /* level 2 interrupt */
#define IRQ_AUTO_3  3   /* level 3 interrupt */
#define IRQ_AUTO_4  4   /* level 4 interrupt */
#define IRQ_AUTO_5  5   /* level 5 interrupt */
#define IRQ_AUTO_6  6   /* level 6 interrupt */
#define IRQ_AUTO_7  7   /* level 7 interrupt (non-maskable) */

#define IRQ_USER    8

struct irq_data;
struct irq_chip;
struct irq_desc;
extern unsigned int m68k_irq_startup(struct irq_data *data);
extern unsigned int m68k_irq_startup_irq(unsigned int irq);
extern void m68k_irq_shutdown(struct irq_data *data);
extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int,
                              struct pt_regs *));
extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt);
extern void m68k_setup_irq_controller(struct irq_chip *,
                      void (*handle)(unsigned int irq,
                             struct irq_desc *desc),
                      unsigned int irq, unsigned int cnt);

extern unsigned int irq_canonicalize(unsigned int irq);

#else
#define irq_canonicalize(irq)  (irq)
#endif /* !(CONFIG_M68020 || CONFIG_M68030 || CONFIG_M68040 || CONFIG_M68060) */

asmlinkage void do_IRQ(int irq, struct pt_regs *regs);
extern atomic_t irq_err_count;

#endif /* _M68K_IRQ_H_ */