42 lines
986 B
C
42 lines
986 B
C
#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);
|
|
|
|
#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)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
#endif /* CONFIG_OF_IOMMU */
|
|
|
|
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 */
|