[linux-2.6-block.git] / include / linux / of_iommu.h

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

#include <linux/device.h>
#include <linux/iommu.h>
#include <linux/of.h>

#ifdef CONFIG_OF_IOMMU

extern int of_get_dma_window(struct device_node *dn, const char *prefix,
			     int index, unsigned long *busno, dma_addr_t *addr,
			     size_t *size);

extern const struct iommu_ops *of_iommu_configure(struct device *dev,
					struct device_node *master_np,
					const u32 *id);

#else

static inline int of_get_dma_window(struct device_node *dn, const char *prefix,
			    int index, unsigned long *busno, dma_addr_t *addr,
			    size_t *size)
{
	return -EINVAL;
}

static inline const struct iommu_ops *of_iommu_configure(struct device *dev,
					 struct device_node *master_np,
					 const u32 *id)
{
	return NULL;
}

#endif	/* CONFIG_OF_IOMMU */

#endif /* __OF_IOMMU_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
4e0ee78f HD	2	#ifndef __OF_IOMMU_H
	3	#define __OF_IOMMU_H
	4
7eba1d51	5	#include <linux/device.h>
1cd076bf WD	6	#include <linux/iommu.h>
	7	#include <linux/of.h>
	8
4e0ee78f HD	9	#ifdef CONFIG_OF_IOMMU
	10
	11	extern 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
53c92d79	15	extern const struct iommu_ops of_iommu_configure(struct device dev,
a081bd4a LP	16	struct device_node *master_np,
a081bd4a LP	17	const u32 *id);
1cd076bf	18
4e0ee78f HD	19	#else
	20
	21	static inline int of_get_dma_window(struct device_node dn, const char prefix,
	22	int index, unsigned long busno, dma_addr_t addr,
	23	size_t *size)
	24	{
	25	return -EINVAL;
	26	}
	27
53c92d79	28	static inline const struct iommu_ops of_iommu_configure(struct device dev,
a081bd4a LP	29	struct device_node *master_np,
a081bd4a LP	30	const u32 *id)
7eba1d51 WD	31	{
	32	return NULL;
	33	}
1cd076bf	34
4e0ee78f HD	35	#endif /* CONFIG_OF_IOMMU */
	36
	37	#endif /* __OF_IOMMU_H */