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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | #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 disable_irq_nosync(unsigned int); extern void enable_irq(unsigned int); extern void irq_enter(int cpu, int irq); extern void irq_exit(int cpu, int irq); struct pt_regs; extern void (*perf_irq)(unsigned long, struct pt_regs *); #endif /* _ALPHA_IRQ_H */ |