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 
17 struct msi_bitmap {
18 	struct device_node	*of_node;
19 	unsigned long		*bitmap;
20 	spinlock_t		lock;
21 	unsigned int		irq_count;
22 	bool		 	bitmap_from_slab;
23 };
24 
25 int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num);
26 void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
27 			    unsigned int num);
28 void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq);
29 
30 int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp);
31 
32 int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
33 		     struct device_node *of_node);
34 void msi_bitmap_free(struct msi_bitmap *bmp);
35 
36 #endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */
37