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#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 void of_iommu_init(void);
extern struct iommu_ops *of_iommu_configure(struct device *dev,
struct device_node *master_np);
#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 void of_iommu_init(void) { }
static inline struct iommu_ops *of_iommu_configure(struct device *dev,
struct device_node *master_np)
{
return NULL;
}
#endif /* CONFIG_OF_IOMMU */
void of_iommu_set_ops(struct device_node *np, struct iommu_ops *ops);
struct iommu_ops *of_iommu_get_ops(struct device_node *np);
extern struct of_device_id __iommu_of_table;
typedef int (*of_iommu_init_fn)(struct device_node *);
#define IOMMU_OF_DECLARE(name, compat, fn) \
_OF_DECLARE(iommu, name, compat, fn, of_iommu_init_fn)
#endif /* __OF_IOMMU_H */