| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | #include <linux/config.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 | extern void disable_irq(unsigned int); |
| 90 | extern void disable_irq_nosync(unsigned int); |
| 91 | extern void enable_irq(unsigned int); |
| 92 | |
| 93 | struct pt_regs; |
| 94 | extern void (*perf_irq)(unsigned long, struct pt_regs *); |
| 95 | |
| 96 | struct irqaction; |
| 97 | int handle_IRQ_event(unsigned int, struct pt_regs *, struct irqaction *); |
| 98 | |
| 99 | |
| 100 | #endif /* _ALPHA_IRQ_H */ |