| /* 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 */ |