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 }; 23 24 int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num); 25 void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset, 26 unsigned int num); 27 void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq); 28 29 int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp); 30 31 int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count, 32 struct device_node *of_node); 33 void msi_bitmap_free(struct msi_bitmap *bmp); 34 35 #endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */ 36