1#ifndef _POWERPC_SYSDEV_MSI_BITMAP_H
2#define _POWERPC_SYSDEV_MSI_BITMAP_H
3
4/*
5 * Copyright 2008, Michael Ellerman, IBM Corporation.
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; version 2 of the
10 * License.
11 *
12 */
13
14#include <linux/of.h>
15#include <asm/irq.h>
16
17struct msi_bitmap {
18	struct device_node	*of_node;
19	unsigned long		*bitmap;
20	spinlock_t		lock;
21	unsigned int		irq_count;
22};
23
24int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num);
25void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
26			    unsigned int num);
27void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq);
28
29int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp);
30
31int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
32		     struct device_node *of_node);
33void msi_bitmap_free(struct msi_bitmap *bmp);
34
35#endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */
36