[deliverable/linux.git] / include / linux / of_iommu.h

#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 */
Commit	Line	Data
	1	#ifndef __OF_IOMMU_H
	2	#define __OF_IOMMU_H
	3
	4	#include <linux/device.h>
	5	#include <linux/iommu.h>
	6	#include <linux/of.h>
	7
	8	#ifdef CONFIG_OF_IOMMU
	9
	10	extern int of_get_dma_window(struct device_node dn, const char prefix,
	11	int index, unsigned long busno, dma_addr_t addr,
	12	size_t *size);
	13
	14	extern void of_iommu_init(void);
	15	extern 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 void of_iommu_init(void) { }
	28	static inline struct iommu_ops of_iommu_configure(struct device dev,
	29	struct device_node *master_np)
	30	{
	31	return NULL;
	32	}
	33
	34	#endif /* CONFIG_OF_IOMMU */
	35
	36	void of_iommu_set_ops(struct device_node np, struct iommu_ops ops);
	37	struct iommu_ops of_iommu_get_ops(struct device_node np);
	38
	39	extern struct of_device_id __iommu_of_table;
	40
	41	typedef int (of_iommu_init_fn)(struct device_node );
	42
	43	#define IOMMU_OF_DECLARE(name, compat, fn) \
	44	_OF_DECLARE(iommu, name, compat, fn, of_iommu_init_fn)
	45
	46	#endif /* __OF_IOMMU_H */