1 #ifndef _ALPHA_IRQ_H 2 #define _ALPHA_IRQ_H 3 4 /* 5 * linux/include/alpha/irq.h 6 * 7 * (C) 1994 Linus Torvalds 8 */ 9 10 #include <linux/linkage.h> 11 12 #if defined(CONFIG_ALPHA_GENERIC) 13 14 /* Here NR_IRQS is not exact, but rather an upper bound. This is used 15 many places throughout the kernel to size static arrays. That's ok, 16 we'll use alpha_mv.nr_irqs when we want the real thing. */ 17 18 /* When LEGACY_START_ADDRESS is selected, we leave out: 19 TITAN 20 WILDFIRE 21 MARVEL 22 23 This helps keep the kernel object size reasonable for the majority 24 of machines. 25 */ 26 27 # if defined(CONFIG_ALPHA_LEGACY_START_ADDRESS) 28 # define NR_IRQS (128) /* max is RAWHIDE/TAKARA */ 29 # else 30 # define NR_IRQS (32768 + 16) /* marvel - 32 pids */ 31 # endif 32 33 #elif defined(CONFIG_ALPHA_CABRIOLET) || \ 34 defined(CONFIG_ALPHA_EB66P) || \ 35 defined(CONFIG_ALPHA_EB164) || \ 36 defined(CONFIG_ALPHA_PC164) || \ 37 defined(CONFIG_ALPHA_LX164) 38 # define NR_IRQS 35 39 40 #elif defined(CONFIG_ALPHA_EB66) || \ 41 defined(CONFIG_ALPHA_EB64P) || \ 42 defined(CONFIG_ALPHA_MIKASA) 43 # define NR_IRQS 32 44 45 #elif defined(CONFIG_ALPHA_ALCOR) || \ 46 defined(CONFIG_ALPHA_MIATA) || \ 47 defined(CONFIG_ALPHA_RUFFIAN) || \ 48 defined(CONFIG_ALPHA_RX164) || \ 49 defined(CONFIG_ALPHA_NORITAKE) 50 # define NR_IRQS 48 51 52 #elif defined(CONFIG_ALPHA_SABLE) || \ 53 defined(CONFIG_ALPHA_SX164) 54 # define NR_IRQS 40 55 56 #elif defined(CONFIG_ALPHA_DP264) || \ 57 defined(CONFIG_ALPHA_LYNX) || \ 58 defined(CONFIG_ALPHA_SHARK) || \ 59 defined(CONFIG_ALPHA_EIGER) 60 # define NR_IRQS 64 61 62 #elif defined(CONFIG_ALPHA_TITAN) 63 #define NR_IRQS 80 64 65 #elif defined(CONFIG_ALPHA_RAWHIDE) || \ 66 defined(CONFIG_ALPHA_TAKARA) 67 # define NR_IRQS 128 68 69 #elif defined(CONFIG_ALPHA_WILDFIRE) 70 # define NR_IRQS 2048 /* enuff for 8 QBBs */ 71 72 #elif defined(CONFIG_ALPHA_MARVEL) 73 # define NR_IRQS (32768 + 16) /* marvel - 32 pids*/ 74 75 #else /* everyone else */ 76 # define NR_IRQS 16 77 #endif 78 79 static __inline__ int irq_canonicalize(int irq) 80 { 81 /* 82 * XXX is this true for all Alpha's? The old serial driver 83 * did it this way for years without any complaints, so.... 84 */ 85 return ((irq == 2) ? 9 : irq); 86 } 87 88 struct pt_regs; 89 extern void (*perf_irq)(unsigned long, struct pt_regs *); 90 91 #endif /* _ALPHA_IRQ_H */ 92