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