1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (c) 2022, Oracle and/or its affiliates.
4 * Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved
5 */
6#ifndef _IOVA_BITMAP_H_
7#define _IOVA_BITMAP_H_
8
9#include <linux/types.h>
10#include <linux/errno.h>
11
12struct iova_bitmap;
13
14typedef int (*iova_bitmap_fn_t)(struct iova_bitmap *bitmap,
15 unsigned long iova, size_t length,
16 void *opaque);
17
18#if IS_ENABLED(CONFIG_IOMMUFD_DRIVER)
19struct iova_bitmap *iova_bitmap_alloc(unsigned long iova, size_t length,
20 unsigned long page_size,
21 u64 __user *data);
22void iova_bitmap_free(struct iova_bitmap *bitmap);
23int iova_bitmap_for_each(struct iova_bitmap *bitmap, void *opaque,
24 iova_bitmap_fn_t fn);
25void iova_bitmap_set(struct iova_bitmap *bitmap,
26 unsigned long iova, size_t length);
27#else
28static inline struct iova_bitmap *iova_bitmap_alloc(unsigned long iova,
29 size_t length,
30 unsigned long page_size,
31 u64 __user *data)
32{
33 return NULL;
34}
35
36static inline void iova_bitmap_free(struct iova_bitmap *bitmap)
37{
38}
39
40static inline int iova_bitmap_for_each(struct iova_bitmap *bitmap, void *opaque,
41 iova_bitmap_fn_t fn)
42{
43 return -EOPNOTSUPP;
44}
45
46static inline void iova_bitmap_set(struct iova_bitmap *bitmap,
47 unsigned long iova, size_t length)
48{
49}
50#endif
51
52#endif
53