1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun #ifndef _POWERPC_SYSDEV_MSI_BITMAP_H 3*4882a593Smuzhiyun #define _POWERPC_SYSDEV_MSI_BITMAP_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun /* 6*4882a593Smuzhiyun * Copyright 2008, Michael Ellerman, IBM Corporation. 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <linux/of.h> 10*4882a593Smuzhiyun #include <asm/irq.h> 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun struct msi_bitmap { 13*4882a593Smuzhiyun struct device_node *of_node; 14*4882a593Smuzhiyun unsigned long *bitmap; 15*4882a593Smuzhiyun spinlock_t lock; 16*4882a593Smuzhiyun unsigned int irq_count; 17*4882a593Smuzhiyun bool bitmap_from_slab; 18*4882a593Smuzhiyun }; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num); 21*4882a593Smuzhiyun void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset, 22*4882a593Smuzhiyun unsigned int num); 23*4882a593Smuzhiyun void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq); 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp); 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count, 28*4882a593Smuzhiyun struct device_node *of_node); 29*4882a593Smuzhiyun void msi_bitmap_free(struct msi_bitmap *bmp); 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun #endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */ 32