home *** CD-ROM | disk | FTP | other *** search
- #ifndef _ALPHA_IRQ_H
- #define _ALPHA_IRQ_H
-
- /*
- * linux/include/alpha/irq.h
- *
- * (C) 1994 Linus Torvalds
- */
-
- #include <linux/linkage.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. */
-
- /* When LEGACY_START_ADDRESS is selected, we leave out:
- TITAN
- WILDFIRE
- MARVEL
-
- This helps keep the kernel object size reasonable for the majority
- of machines.
- */
-
- # if defined(CONFIG_ALPHA_LEGACY_START_ADDRESS)
- # define NR_IRQS (128) /* max is RAWHIDE/TAKARA */
- # else
- # define NR_IRQS (32768 + 16) /* marvel - 32 pids */
- # endif
-
- #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_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_LYNX) || \
- defined(CONFIG_ALPHA_SHARK) || \
- defined(CONFIG_ALPHA_EIGER)
- # define NR_IRQS 64
-
- #elif defined(CONFIG_ALPHA_TITAN)
- #define NR_IRQS 80
-
- #elif defined(CONFIG_ALPHA_RAWHIDE) || \
- defined(CONFIG_ALPHA_TAKARA)
- # define NR_IRQS 128
-
- #elif defined(CONFIG_ALPHA_WILDFIRE)
- # define NR_IRQS 2048 /* enuff for 8 QBBs */
-
- #elif defined(CONFIG_ALPHA_MARVEL)
- # define NR_IRQS (32768 + 16) /* marvel - 32 pids*/
-
- #else /* everyone else */
- # define NR_IRQS 16
- #endif
-
- static __inline__ int irq_canonicalize(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 disable_irq_nosync(unsigned int);
- extern void enable_irq(unsigned int);
-
- struct pt_regs;
- extern void (*perf_irq)(unsigned long, struct pt_regs *);
-
- struct irqaction;
- int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *);
-
-
- #endif /* _ALPHA_IRQ_H */
-