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1da177e4 LT |
1 | /* irq.h: FRV IRQ definitions |
2 | * | |
3 | * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. | |
4 | * Written by David Howells (dhowells@redhat.com) | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU General Public License | |
8 | * as published by the Free Software Foundation; either version | |
9 | * 2 of the License, or (at your option) any later version. | |
10 | */ | |
11 | ||
12 | #ifndef _ASM_IRQ_H_ | |
13 | #define _ASM_IRQ_H_ | |
14 | ||
1da177e4 LT |
15 | |
16 | /* | |
17 | * the system has an on-CPU PIC and another PIC on the FPGA and other PICs on other peripherals, | |
18 | * so we do some routing in irq-routing.[ch] to reduce the number of false-positives seen by | |
19 | * drivers | |
20 | */ | |
21 | ||
22 | /* this number is used when no interrupt has been assigned */ | |
23 | #define NO_IRQ (-1) | |
24 | ||
25 | #define NR_IRQ_LOG2_ACTIONS_PER_GROUP 5 | |
26 | #define NR_IRQ_ACTIONS_PER_GROUP (1 << NR_IRQ_LOG2_ACTIONS_PER_GROUP) | |
27 | #define NR_IRQ_GROUPS 4 | |
28 | #define NR_IRQS (NR_IRQ_ACTIONS_PER_GROUP * NR_IRQ_GROUPS) | |
29 | ||
30 | /* probe returns a 32-bit IRQ mask:-/ */ | |
31 | #define MIN_PROBE_IRQ (NR_IRQS - 32) | |
32 | ||
33 | static inline int irq_canonicalize(int irq) | |
34 | { | |
35 | return irq; | |
36 | } | |
37 | ||
38 | extern void disable_irq_nosync(unsigned int irq); | |
39 | extern void disable_irq(unsigned int irq); | |
40 | extern void enable_irq(unsigned int irq); | |
41 | ||
42 | ||
43 | #endif /* _ASM_IRQ_H_ */ |