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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 */
-