/* 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 */