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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[karo-tx-linux.git] / include / linux / of_iommu.h
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 const struct iommu_ops *of_iommu_configure(struct device *dev,
15                                         struct device_node *master_np);
16
17 #else
18
19 static inline int of_get_dma_window(struct device_node *dn, const char *prefix,
20                             int index, unsigned long *busno, dma_addr_t *addr,
21                             size_t *size)
22 {
23         return -EINVAL;
24 }
25
26 static inline const struct iommu_ops *of_iommu_configure(struct device *dev,
27                                          struct device_node *master_np)
28 {
29         return NULL;
30 }
31
32 #endif  /* CONFIG_OF_IOMMU */
33
34 extern struct of_device_id __iommu_of_table;
35
36 typedef int (*of_iommu_init_fn)(struct device_node *);
37
38 #define IOMMU_OF_DECLARE(name, compat, fn) \
39         _OF_DECLARE(iommu, name, compat, fn, of_iommu_init_fn)
40
41 #endif /* __OF_IOMMU_H */