| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame^] | 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 | |
| 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 | |
| 15 | extern const struct iommu_ops *of_iommu_configure(struct device *dev, |
| 16 | struct device_node *master_np); |
| 17 | |
| 18 | #else |
| 19 | |
| 20 | static 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 | |
| 27 | static 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 */ |