This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / asm-avr32 / intc.h

diff --git a/include/asm-avr32/intc.h b/include/asm-avr32/intc.h
new file mode 100644 (file)
index 0000000..1ac9ca7
--- /dev/null
+++ b/include/asm-avr32/intc.h
@@ -0,0 +1,128 @@
+#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 */