1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 #ifndef _POWERPC_SYSDEV_MSI_BITMAP_H 3 #define _POWERPC_SYSDEV_MSI_BITMAP_H 4 5 /* 6 * Copyright 2008, Michael Ellerman, IBM Corporation. 7 */ 8 9 #include <linux/of.h> 10 #include <asm/irq.h> 11 12 struct msi_bitmap { 13 struct device_node *of_node; 14 unsigned long *bitmap; 15 spinlock_t lock; 16 unsigned int irq_count; 17 bool bitmap_from_slab; 18 }; 19 20 int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num); 21 void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset, 22 unsigned int num); 23 void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq); 24 25 int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp); 26 27 int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count, 28 struct device_node *of_node); 29 void msi_bitmap_free(struct msi_bitmap *bmp); 30 31 #endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */ 32