/* SPDX-License-Identifier: GPL-2.0-only */
#ifndef _POWERPC_SYSDEV_MSI_BITMAP_H
#define _POWERPC_SYSDEV_MSI_BITMAP_H

/*
 * Copyright 2008, Michael Ellerman, IBM Corporation.
 */

#include <linux/of.h>
#include <asm/irq.h>

struct msi_bitmap {
        struct device_node      *of_node;
        unsigned long           *bitmap;
        spinlock_t              lock;
        unsigned int            irq_count;
        bool                    bitmap_from_slab;
};

int msi_bitmap_alloc_hwirqs(struct msi_bitmap *bmp, int num);
void msi_bitmap_free_hwirqs(struct msi_bitmap *bmp, unsigned int offset,
                            unsigned int num);
void msi_bitmap_reserve_hwirq(struct msi_bitmap *bmp, unsigned int hwirq);

int msi_bitmap_reserve_dt_hwirqs(struct msi_bitmap *bmp);

int msi_bitmap_alloc(struct msi_bitmap *bmp, unsigned int irq_count,
                     struct device_node *of_node);
void msi_bitmap_free(struct msi_bitmap *bmp);

#endif /* _POWERPC_SYSDEV_MSI_BITMAP_H */