1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/* irq-routing.h: multiplexed IRQ routing
|
|
*
|
|
* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _ASM_IRQ_ROUTING_H
|
|
#define _ASM_IRQ_ROUTING_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <linux/spinlock.h>
|
|
#include <asm/irq.h>
|
|
|
|
struct irq_source;
|
|
struct irq_level;
|
|
|
|
/*
|
|
* IRQ action distribution sets
|
|
*/
|
|
struct irq_group {
|
|
int first_irq; /* first IRQ distributed here */
|
|
void (*control)(struct irq_group *group, int index, int on);
|
|
|
|
struct irqaction *actions[NR_IRQ_ACTIONS_PER_GROUP]; /* IRQ action chains */
|
|
struct irq_source *sources[NR_IRQ_ACTIONS_PER_GROUP]; /* IRQ sources */
|
|
int disable_cnt[NR_IRQ_ACTIONS_PER_GROUP]; /* disable counts */
|
|
};
|
|
|
|
/*
|
|
* IRQ source manager
|
|
*/
|
|
struct irq_source {
|
|
struct irq_source *next;
|
|
struct irq_level *level;
|
|
const char *muxname;
|
|
volatile void __iomem *muxdata;
|
|
unsigned long irqmask;
|
|
|
|
void (*doirq)(struct irq_source *source);
|
|
};
|
|
|
|
/*
|
|
* IRQ level management (per CPU IRQ priority / entry vector)
|
|
*/
|
|
struct irq_level {
|
|
int usage;
|
|
int disable_count;
|
|
unsigned long flags; /* current SA_INTERRUPT and SA_SHIRQ settings */
|
|
spinlock_t lock;
|
|
struct irq_source *sources;
|
|
};
|
|
|
|
extern struct irq_level frv_irq_levels[16];
|
|
extern struct irq_group *irq_groups[NR_IRQ_GROUPS];
|
|
|
|
extern void frv_irq_route(struct irq_source *source, int irqlevel);
|
|
extern void frv_irq_route_external(struct irq_source *source, int irq);
|
|
extern void frv_irq_set_group(struct irq_group *group);
|
|
extern void distribute_irqs(struct irq_group *group, unsigned long irqmask);
|
|
extern void route_cpu_irqs(void);
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_IRQ_ROUTING_H */
|