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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2022, Oracle and/or its affiliates.
* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved
*/
#ifndef _IOVA_BITMAP_H_
#define _IOVA_BITMAP_H_
#include <linux/types.h>
#include <linux/errno.h>
struct iova_bitmap;
typedef int (*iova_bitmap_fn_t)(struct iova_bitmap *bitmap,
unsigned long iova, size_t length,
void *opaque);
#if IS_ENABLED(CONFIG_IOMMUFD_DRIVER)
struct iova_bitmap *iova_bitmap_alloc(unsigned long iova, size_t length,
unsigned long page_size,
u64 __user *data);
void iova_bitmap_free(struct iova_bitmap *bitmap);
int iova_bitmap_for_each(struct iova_bitmap *bitmap, void *opaque,
iova_bitmap_fn_t fn);
void iova_bitmap_set(struct iova_bitmap *bitmap,
unsigned long iova, size_t length);
#else
static inline struct iova_bitmap *iova_bitmap_alloc(unsigned long iova,
size_t length,
unsigned long page_size,
u64 __user *data)
{
return NULL;
}
static inline void iova_bitmap_free(struct iova_bitmap *bitmap)
{
}
static inline int iova_bitmap_for_each(struct iova_bitmap *bitmap, void *opaque,
iova_bitmap_fn_t fn)
{
return -EOPNOTSUPP;
}
static inline void iova_bitmap_set(struct iova_bitmap *bitmap,
unsigned long iova, size_t length)
{
}
#endif
#endif
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