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37 lines
862 B
37 lines
862 B
/* 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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const u32 *id); |
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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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const u32 *id) |
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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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#endif /* __OF_IOMMU_H */
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