1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ALPHA_IRQ_H 3 #define _ALPHA_IRQ_H 4 5 /* 6 * linux/include/alpha/irq.h 7 * 8 * (C) 1994 Linus Torvalds 9 */ 10 11 #include <linux/linkage.h> 12 13 #if defined(CONFIG_ALPHA_GENERIC) 14 15 /* Here NR_IRQS is not exact, but rather an upper bound. This is used 16 many places throughout the kernel to size static arrays. That's ok, 17 we'll use alpha_mv.nr_irqs when we want the real thing. */ 18 19 /* When LEGACY_START_ADDRESS is selected, we leave out: 20 TITAN 21 WILDFIRE 22 MARVEL 23 24 This helps keep the kernel object size reasonable for the majority 25 of machines. 26 */ 27 28 # if defined(CONFIG_ALPHA_LEGACY_START_ADDRESS) 29 # define NR_IRQS (128) /* max is RAWHIDE/TAKARA */ 30 # else 31 # define NR_IRQS (32768 + 16) /* marvel - 32 pids */ 32 # endif 33 34 #elif defined(CONFIG_ALPHA_CABRIOLET) || \ 35 defined(CONFIG_ALPHA_EB66P) || \ 36 defined(CONFIG_ALPHA_EB164) || \ 37 defined(CONFIG_ALPHA_PC164) || \ 38 defined(CONFIG_ALPHA_LX164) 39 # define NR_IRQS 35 40 41 #elif defined(CONFIG_ALPHA_EB66) || \ 42 defined(CONFIG_ALPHA_EB64P) || \ 43 defined(CONFIG_ALPHA_MIKASA) 44 # define NR_IRQS 32 45 46 #elif defined(CONFIG_ALPHA_ALCOR) || \ 47 defined(CONFIG_ALPHA_MIATA) || \ 48 defined(CONFIG_ALPHA_RUFFIAN) || \ 49 defined(CONFIG_ALPHA_RX164) || \ 50 defined(CONFIG_ALPHA_NORITAKE) 51 # define NR_IRQS 48 52 53 #elif defined(CONFIG_ALPHA_SABLE) || \ 54 defined(CONFIG_ALPHA_SX164) 55 # define NR_IRQS 40 56 57 #elif defined(CONFIG_ALPHA_DP264) || \ 58 defined(CONFIG_ALPHA_LYNX) || \ 59 defined(CONFIG_ALPHA_SHARK) || \ 60 defined(CONFIG_ALPHA_EIGER) 61 # define NR_IRQS 64 62 63 #elif defined(CONFIG_ALPHA_TITAN) 64 #define NR_IRQS 80 65 66 #elif defined(CONFIG_ALPHA_RAWHIDE) || \ 67 defined(CONFIG_ALPHA_TAKARA) 68 # define NR_IRQS 128 69 70 #elif defined(CONFIG_ALPHA_WILDFIRE) 71 # define NR_IRQS 2048 /* enuff for 8 QBBs */ 72 73 #elif defined(CONFIG_ALPHA_MARVEL) 74 # define NR_IRQS (32768 + 16) /* marvel - 32 pids*/ 75 76 #else /* everyone else */ 77 # define NR_IRQS 16 78 #endif 79 80 static __inline__ int irq_canonicalize(int irq) 81 { 82 /* 83 * XXX is this true for all Alpha's? The old serial driver 84 * did it this way for years without any complaints, so.... 85 */ 86 return ((irq == 2) ? 9 : irq); 87 } 88 89 struct pt_regs; 90 extern void (*perf_irq)(unsigned long, struct pt_regs *); 91 92 #endif /* _ALPHA_IRQ_H */ 93