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
12#include <linux/linkage.h>
13#include <linux/smp.h>
14#include <linux/irqdomain.h>
15
16#include <asm/mipsmtregs.h>
17
18#include <irq.h>
19
 
 
 
 
 
 
 
 
 
 
 
 
20#ifdef CONFIG_I8259
21static inline int irq_canonicalize(int irq)
22{
23	return ((irq == I8259A_IRQ_BASE + 2) ? I8259A_IRQ_BASE + 9 : irq);
24}
25#else
26#define irq_canonicalize(irq) (irq)	/* Sane hardware, sane code ... */
27#endif
28
29asmlinkage void plat_irq_dispatch(void);
30
31extern void do_IRQ(unsigned int irq);
32
33extern void arch_init_irq(void);
34extern void spurious_interrupt(void);
35
36extern int allocate_irqno(void);
37extern void alloc_legacy_irqno(void);
38extern void free_irqno(unsigned int irq);
39
40/*
41 * Before R2 the timer and performance counter interrupts were both fixed to
42 * IE7.	 Since R2 their number has to be read from the c0_intctl register.
43 */
44#define CP0_LEGACY_COMPARE_IRQ 7
45#define CP0_LEGACY_PERFCNT_IRQ 7
46
47extern int cp0_compare_irq;
48extern int cp0_compare_irq_shift;
49extern int cp0_perfcount_irq;
50extern int cp0_fdc_irq;
51
52extern int get_c0_fdc_int(void);
53
54void arch_trigger_all_cpu_backtrace(bool);
55#define arch_trigger_all_cpu_backtrace arch_trigger_all_cpu_backtrace
 
56
57#endif /* _ASM_IRQ_H */

 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
12#include <linux/linkage.h>
13#include <linux/smp.h>
14#include <linux/irqdomain.h>
15
16#include <asm/mipsmtregs.h>
17
18#include <irq.h>
19
20#define IRQ_STACK_SIZE			THREAD_SIZE
21
22extern void *irq_stack[NR_CPUS];
23
24static inline bool on_irq_stack(int cpu, unsigned long sp)
25{
26	unsigned long low = (unsigned long)irq_stack[cpu];
27	unsigned long high = low + IRQ_STACK_SIZE;
28
29	return (low <= sp && sp <= high);
30}
31
32#ifdef CONFIG_I8259
33static inline int irq_canonicalize(int irq)
34{
35	return ((irq == I8259A_IRQ_BASE + 2) ? I8259A_IRQ_BASE + 9 : irq);
36}
37#else
38#define irq_canonicalize(irq) (irq)	/* Sane hardware, sane code ... */
39#endif
40
41asmlinkage void plat_irq_dispatch(void);
42
43extern void do_IRQ(unsigned int irq);
44
45extern void arch_init_irq(void);
46extern void spurious_interrupt(void);
47
48extern int allocate_irqno(void);
49extern void alloc_legacy_irqno(void);
50extern void free_irqno(unsigned int irq);
51
52/*
53 * Before R2 the timer and performance counter interrupts were both fixed to
54 * IE7.	 Since R2 their number has to be read from the c0_intctl register.
55 */
56#define CP0_LEGACY_COMPARE_IRQ 7
57#define CP0_LEGACY_PERFCNT_IRQ 7
58
59extern int cp0_compare_irq;
60extern int cp0_compare_irq_shift;
61extern int cp0_perfcount_irq;
62extern int cp0_fdc_irq;
63
64extern int get_c0_fdc_int(void);
65
66void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
67				    bool exclude_self);
68#define arch_trigger_cpumask_backtrace arch_trigger_cpumask_backtrace
69
70#endif /* _ASM_IRQ_H */