2 * Copyright (C) 2006 Atmark Techno, Inc.
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
9 #ifndef _ASM_MICROBLAZE_IRQ_H
10 #define _ASM_MICROBLAZE_IRQ_H
13 #include <asm-generic/irq.h>
15 #include <linux/interrupt.h>
17 /* This type is the placeholder for a hardware interrupt number. It has to
18 * be big enough to enclose whatever representation is used by a given
21 typedef unsigned long irq_hw_number_t;
23 extern unsigned int nr_irq;
28 extern void do_IRQ(struct pt_regs *regs);
31 * irq_of_parse_and_map - Parse and Map an interrupt into linux virq space
32 * @device: Device node of the device whose interrupt is to be mapped
33 * @index: Index of the interrupt to map
35 * This function is a wrapper that chains of_irq_map_one() and
36 * irq_create_of_mapping() to make things easier to callers
39 extern unsigned int irq_of_parse_and_map(struct device_node *dev, int index);
41 /** FIXME - not implement
42 * irq_dispose_mapping - Unmap an interrupt
43 * @virq: linux virq number of the interrupt to unmap
45 static inline void irq_dispose_mapping(unsigned int virq)
53 * irq_create_mapping - Map a hardware interrupt into linux virq space
54 * @host: host owning this hardware interrupt or NULL for default host
55 * @hwirq: hardware irq number in that host space
57 * Only one mapping per hardware interrupt is permitted. Returns a linux
59 * If the sense/trigger is to be specified, set_irq_type() should be called
60 * on the number returned from that call.
62 extern unsigned int irq_create_mapping(struct irq_host *host,
63 irq_hw_number_t hwirq);
66 * irq_create_of_mapping - Map a hardware interrupt into linux virq space
67 * @controller: Device node of the interrupt controller
68 * @inspec: Interrupt specifier from the device-tree
69 * @intsize: Size of the interrupt specifier from the device-tree
71 * This function is identical to irq_create_mapping except that it takes
72 * as input informations straight from the device-tree (typically the results
73 * of the of_irq_map_*() functions.
75 extern unsigned int irq_create_of_mapping(struct device_node *controller,
76 u32 *intspec, unsigned int intsize);
78 #endif /* _ASM_MICROBLAZE_IRQ_H */