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#ifndef _ALPHA_IRQ_H
#define _ALPHA_IRQ_H
/*
* linux/include/alpha/irq.h
*
* (C) 1994 Linus Torvalds
*/
#include <linux/linkage.h>
#include <linux/config.h>
#if defined(CONFIG_ALPHA_GENERIC)
/* Here NR_IRQS is not exact, but rather an upper bound. This is used
many places throughout the kernel to size static arrays. That's ok,
we'll use alpha_mv.nr_irqs when we want the real thing. */
# define NR_IRQS 64
#elif defined(CONFIG_ALPHA_CABRIOLET) || \
defined(CONFIG_ALPHA_EB66P) || \
defined(CONFIG_ALPHA_EB164) || \
defined(CONFIG_ALPHA_PC164) || \
defined(CONFIG_ALPHA_LX164)
# define NR_IRQS 35
#elif defined(CONFIG_ALPHA_EB66) || \
defined(CONFIG_ALPHA_EB64P) || \
defined(CONFIG_ALPHA_MIKASA)
# define NR_IRQS 32
#elif defined(CONFIG_ALPHA_ALCOR) || \
defined(CONFIG_ALPHA_XLT) || \
defined(CONFIG_ALPHA_MIATA) || \
defined(CONFIG_ALPHA_RUFFIAN) || \
defined(CONFIG_ALPHA_RX164) || \
defined(CONFIG_ALPHA_NORITAKE)
# define NR_IRQS 48
#elif defined(CONFIG_ALPHA_SABLE) || \
defined(CONFIG_ALPHA_SX164)
# define NR_IRQS 40
#elif defined(CONFIG_ALPHA_DP264) || \
defined(CONFIG_ALPHA_RAWHIDE)
# define NR_IRQS 64
#elif defined(CONFIG_ALPHA_TAKARA)
# define NR_IRQS 20
#else /* everyone else */
# define NR_IRQS 16
#endif
/*
* PROBE_MASK is the bitset of irqs that we consider for autoprobing.
*/
/* The normal mask includes all the IRQs except the timer. */
#define _PROBE_MASK(nr_irqs) (((1UL << (nr_irqs & 63)) - 1) & ~1UL)
/* Mask out unused timer irq 0 and RTC irq 8. */
#define P2K_PROBE_MASK (_PROBE_MASK(16) & ~0x101UL)
/* Mask out unused timer irq 0, "irqs" 20-30, and the EISA cascade. */
#define ALCOR_PROBE_MASK (_PROBE_MASK(48) & ~0xfff000000001UL)
/* Leave timer irq 0 in the mask. */
#define RUFFIAN_PROBE_MASK (_PROBE_MASK(48) | 1UL)
#if defined(CONFIG_ALPHA_GENERIC)
# define PROBE_MASK alpha_mv.irq_probe_mask
#elif defined(CONFIG_ALPHA_P2K)
# define PROBE_MASK P2K_PROBE_MASK
#elif defined(CONFIG_ALPHA_ALCOR) || defined(CONFIG_ALPHA_XLT)
# define PROBE_MASK ALCOR_PROBE_MASK
#elif defined(CONFIG_ALPHA_RUFFIAN)
# define PROBE_MASK RUFFIAN_PROBE_MASK
#else
# define PROBE_MASK _PROBE_MASK(NR_IRQS)
#endif
static __inline__ int irq_cannonicalize(int irq)
{
/*
* XXX is this true for all Alpha's? The old serial driver
* did it this way for years without any complaints, so....
*/
return ((irq == 2) ? 9 : irq);
}
extern void disable_irq(unsigned int);
extern void enable_irq(unsigned int);
struct pt_regs;
extern void (*perf_irq)(unsigned long, struct pt_regs *);
#endif /* _ALPHA_IRQ_H */
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