a42a7a1fb5
Since the data pointer in the DT node is public and may be overwritten by conflicting code, move the DT-probed IOMMU ops to a private list where they will be safe. Acked-by: Grant Likely <grant.likely@linaro.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> [will: added missing #include and missing ')'] Signed-off-by: Will Deacon <will.deacon@arm.com>
45 lines
1.1 KiB
C
45 lines
1.1 KiB
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 void of_iommu_init(void);
|
|
extern struct iommu_ops *of_iommu_configure(struct device *dev);
|
|
|
|
#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)
|
|
{
|
|
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 */
|