#ifndef __ASM_AVR32_INTC_H #define __ASM_AVR32_INTC_H #include <linux/sysdev.h> #include <linux/interrupt.h> struct irq_controller; struct irqaction; struct pt_regs; struct platform_device; /* Information about the internal interrupt controller */ struct intc_device { /* ioremapped address of configuration block */ void __iomem *regs; /* the physical device */ struct platform_device *pdev; /* Number of interrupt lines per group. */ unsigned int irqs_per_group; /* The highest group ID + 1 */ unsigned int nr_groups; /* * Bitfield indicating which groups are actually in use. The * size of the array is * ceil(group_max / (8 * sizeof(unsigned int))). */ unsigned int group_mask[]; }; struct irq_controller_class { /* * A short name identifying this kind of controller. */ const char *typename; /* * Handle the IRQ. Must do any necessary acking and masking. */ irqreturn_t (*handle)(int irq, void *dev_id, struct pt_regs *regs); /* * Register a new IRQ handler. */ int (*setup)(struct irq_controller *ctrl, unsigned int irq, struct irqaction *action); /* * Unregister a IRQ handler. */ void (*free)(struct irq_controller *ctrl, unsigned int irq, void *dev_id); /* * Mask the IRQ in the interrupt controller. */ void (*mask)(struct irq_controller *ctrl, unsigned int irq); /* * Unmask the IRQ in the interrupt controller. */ void (*unmask)(struct irq_controller *ctrl, unsigned int irq); /* * Set the type of the IRQ. See below for possible types. * Return -EINVAL if a given type is not supported */ int (*set_type)(struct irq_controller *ctrl, unsigned int irq, unsigned int type); /* * Return the IRQ type currently set */ unsigned int (*get_type)(struct irq_controller *ctrl, unsigned int irq); }; struct irq_controller { struct irq_controller_class *class; unsigned int irq_group; unsigned int first_irq; unsigned int nr_irqs; struct list_head list; }; struct intc_group_desc { struct irq_controller *ctrl; irqreturn_t (*handle)(int, void *, struct pt_regs *); unsigned long flags; void *dev_id; const char *devname; }; /* * The internal interrupt controller. Defined in board/part-specific * devices.c. * TODO: Should probably be defined per-cpu. */ extern struct intc_device intc; extern int request_internal_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long irqflags, const char *devname, void *dev_id); extern void free_internal_irq(unsigned int irq); /* Only used by time_init() */ extern int setup_internal_irq(unsigned int irq, struct intc_group_desc *desc); /* * Set interrupt priority for a given group. `group' can be found by * using irq_to_group(irq). Priority can be from 0 (lowest) to 3 * (highest). Higher-priority interrupts will preempt lower-priority * interrupts (unless interrupts are masked globally). * * This function does not check for conflicts within a group. */ extern int intc_set_priority(unsigned int group, unsigned int priority); /* * Returns a bitmask of pending interrupts in a group. */ extern unsigned long intc_get_pending(unsigned int group); /* * Register a new external interrupt controller. Returns the first * external IRQ number that is assigned to the new controller. */ extern int intc_register_controller(struct irq_controller *ctrl); #endif /* __ASM_AVR32_INTC_H */