43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __OF_IOMMU_H
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#define __OF_IOMMU_H
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#include <linux/device.h>
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#include <linux/iommu.h>
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#include <linux/of.h>
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#ifdef CONFIG_OF_IOMMU
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extern int of_get_dma_window(struct device_node *dn, const char *prefix,
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int index, unsigned long *busno, dma_addr_t *addr,
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size_t *size);
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extern const struct iommu_ops *of_iommu_configure(struct device *dev,
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struct device_node *master_np);
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#else
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static inline int of_get_dma_window(struct device_node *dn, const char *prefix,
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int index, unsigned long *busno, dma_addr_t *addr,
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size_t *size)
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{
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return -EINVAL;
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}
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static inline const struct iommu_ops *of_iommu_configure(struct device *dev,
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struct device_node *master_np)
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{
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return NULL;
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}
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#endif /* CONFIG_OF_IOMMU */
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extern struct of_device_id __iommu_of_table;
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typedef int (*of_iommu_init_fn)(struct device_node *);
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#define IOMMU_OF_DECLARE(name, compat, fn) \
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_OF_DECLARE(iommu, name, compat, fn, of_iommu_init_fn)
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#endif /* __OF_IOMMU_H */
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