|  | /* SPDX-License-Identifier: GPL-2.0 */ | 
|  | #ifndef __OF_IOMMU_H | 
|  | #define __OF_IOMMU_H | 
|  |  | 
|  | struct device; | 
|  | struct device_node; | 
|  | struct iommu_ops; | 
|  |  | 
|  | #ifdef CONFIG_OF_IOMMU | 
|  |  | 
|  | extern int of_iommu_configure(struct device *dev, struct device_node *master_np, | 
|  | const u32 *id); | 
|  |  | 
|  | extern void of_iommu_get_resv_regions(struct device *dev, | 
|  | struct list_head *list); | 
|  |  | 
|  | #else | 
|  |  | 
|  | static inline int of_iommu_configure(struct device *dev, | 
|  | struct device_node *master_np, | 
|  | const u32 *id) | 
|  | { | 
|  | return -ENODEV; | 
|  | } | 
|  |  | 
|  | static inline void of_iommu_get_resv_regions(struct device *dev, | 
|  | struct list_head *list) | 
|  | { | 
|  | } | 
|  |  | 
|  | #endif	/* CONFIG_OF_IOMMU */ | 
|  |  | 
|  | #endif /* __OF_IOMMU_H */ |