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1da177e4 LT |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 1994 by Waldorf GMBH, written by Ralf Baechle | |
7 | * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02, 03 by Ralf Baechle | |
8 | */ | |
9 | #ifndef _ASM_IRQ_H | |
10 | #define _ASM_IRQ_H | |
11 | ||
1da177e4 | 12 | #include <linux/linkage.h> |
631330f5 | 13 | #include <linux/smp.h> |
abd2363f | 14 | #include <linux/irqdomain.h> |
41c594ab RB |
15 | |
16 | #include <asm/mipsmtregs.h> | |
17 | ||
1da177e4 LT |
18 | #include <irq.h> |
19 | ||
20 | #ifdef CONFIG_I8259 | |
21 | static inline int irq_canonicalize(int irq) | |
22 | { | |
2fa7937b | 23 | return ((irq == I8259A_IRQ_BASE + 2) ? I8259A_IRQ_BASE + 9 : irq); |
1da177e4 LT |
24 | } |
25 | #else | |
26 | #define irq_canonicalize(irq) (irq) /* Sane hardware, sane code ... */ | |
27 | #endif | |
28 | ||
950e97ca SR |
29 | asmlinkage void plat_irq_dispatch(void); |
30 | ||
8f99a162 | 31 | extern void do_IRQ(unsigned int irq); |
1da177e4 | 32 | |
1da177e4 | 33 | extern void arch_init_irq(void); |
937a8015 | 34 | extern void spurious_interrupt(void); |
1da177e4 | 35 | |
4a4cf779 RB |
36 | extern int allocate_irqno(void); |
37 | extern void alloc_legacy_irqno(void); | |
38 | extern void free_irqno(unsigned int irq); | |
39 | ||
3b1d4ed5 RB |
40 | /* |
41 | * Before R2 the timer and performance counter interrupts were both fixed to | |
70342287 | 42 | * IE7. Since R2 their number has to be read from the c0_intctl register. |
3b1d4ed5 RB |
43 | */ |
44 | #define CP0_LEGACY_COMPARE_IRQ 7 | |
c6a4ebb9 | 45 | #define CP0_LEGACY_PERFCNT_IRQ 7 |
3b1d4ed5 RB |
46 | |
47 | extern int cp0_compare_irq; | |
010c108d | 48 | extern int cp0_compare_irq_shift; |
3b1d4ed5 | 49 | extern int cp0_perfcount_irq; |
8f7ff027 JH |
50 | extern int cp0_fdc_irq; |
51 | ||
770847ba | 52 | extern int get_c0_fdc_int(void); |
3b1d4ed5 | 53 | |
856839b7 ES |
54 | void arch_trigger_all_cpu_backtrace(bool); |
55 | #define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace | |
56 | ||
1da177e4 | 57 | #endif /* _ASM_IRQ_H */ |