summaryrefslogtreecommitdiffstats
path: root/arch/sh/include/asm/irq.h
blob: 45d08b6a5ef71de204578bb0569f4fba3c836cbd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
#ifndef __ASM_SH_IRQ_H
#define __ASM_SH_IRQ_H

#include <linux/cpumask.h>
#include <asm/machvec.h>

/*
 * A sane default based on a reasonable vector table size, platforms are
 * advised to cap this at the hard limit that they're interested in
 * through the machvec.
 */
#define NR_IRQS			512
#define NR_IRQS_LEGACY		8	/* Legacy external IRQ0-7 */

/*
 * This is a special IRQ number for indicating that no IRQ has been
 * triggered and to simply ignore the IRQ dispatch. This is a special
 * case that can happen with IRQ auto-distribution when multiple CPUs
 * are woken up and signalled in parallel.
 */
#define NO_IRQ_IGNORE		((unsigned int)-1)

/*
 * Convert back and forth between INTEVT and IRQ values.
 */
#ifdef CONFIG_CPU_HAS_INTEVT
#define evt2irq(evt)		(((evt) >> 5) - 16)
#define irq2evt(irq)		(((irq) + 16) << 5)
#else
#define evt2irq(evt)		(evt)
#define irq2evt(irq)		(irq)
#endif

/*
 * Simple Mask Register Support
 */
extern void make_maskreg_irq(unsigned int irq);
extern unsigned short *irq_mask_register;

/*
 * PINT IRQs
 */
void init_IRQ_pint(void);
void make_imask_irq(unsigned int irq);

static inline int generic_irq_demux(int irq)
{
	return irq;
}

#define irq_demux(irq)		sh_mv.mv_irq_demux(irq)

void init_IRQ(void);
void migrate_irqs(void);

asmlinkage int do_IRQ(unsigned int irq, struct pt_regs *regs);

#ifdef CONFIG_IRQSTACKS
extern void irq_ctx_init(int cpu);
extern void irq_ctx_exit(int cpu);
# define __ARCH_HAS_DO_SOFTIRQ
#else
# define irq_ctx_init(cpu) do { } while (0)
# define irq_ctx_exit(cpu) do { } while (0)
#endif

#ifdef CONFIG_INTC_BALANCING
extern unsigned int irq_lookup(unsigned int irq);
extern void irq_finish(unsigned int irq);
#else
#define irq_lookup(irq)		(irq)
#define irq_finish(irq)		do { } while (0)
#endif

#include <asm-generic/irq.h>
#ifdef CONFIG_CPU_SH5
#include <cpu/irq.h>
#endif

#endif /* __ASM_SH_IRQ_H */