Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __OF_IOMMU_H
3#define __OF_IOMMU_H
4
5#include <linux/device.h>
6#include <linux/iommu.h>
7#include <linux/of.h>
8
9#ifdef CONFIG_OF_IOMMU
10
11extern int of_get_dma_window(struct device_node *dn, const char *prefix,
12 int index, unsigned long *busno, dma_addr_t *addr,
13 size_t *size);
14
15extern const struct iommu_ops *of_iommu_configure(struct device *dev,
16 struct device_node *master_np);
17
18#else
19
20static inline int of_get_dma_window(struct device_node *dn, const char *prefix,
21 int index, unsigned long *busno, dma_addr_t *addr,
22 size_t *size)
23{
24 return -EINVAL;
25}
26
27static inline const struct iommu_ops *of_iommu_configure(struct device *dev,
28 struct device_node *master_np)
29{
30 return NULL;
31}
32
33#endif /* CONFIG_OF_IOMMU */
34
35#endif /* __OF_IOMMU_H */