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| author |   Will Deacon <will.deacon@arm.com> | 2014-08-27 16:20:32 +0100 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2014-12-01 16:50:38 +0000 |
| commit | 7eba1d51485197fa77c43c42eae3ce04b4b1c1c0 (patch) | |
| tree | ace7a25c7d2aaf0e6250d60db0ee08faf55bf201 /include/linux/of_iommu.h | |
| parent | iommu: add new iommu_ops callback for adding an OF device (diff) | |
| download | wireguard-linux-7eba1d51485197fa77c43c42eae3ce04b4b1c1c0.tar.xz wireguard-linux-7eba1d51485197fa77c43c42eae3ce04b4b1c1c0.zip | |
iommu: provide helper function to configure an IOMMU for an of master
The generic IOMMU device-tree bindings can be used to add arbitrary OF
masters to an IOMMU with a compliant binding.
This patch introduces of_iommu_configure, which does exactly that.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Joerg Roedel <jroedel@suse.de>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'include/linux/of_iommu.h')
| -rw-r--r-- | include/linux/of_iommu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/of_iommu.h b/include/linux/of_iommu.h index 5762cdc8effe..d03abbb11c34 100644 --- a/include/linux/of_iommu.h +++ b/include/linux/of_iommu.h @@ -1,6 +1,7 @@ #ifndef __OF_IOMMU_H #define __OF_IOMMU_H +#include <linux/device.h> #include <linux/iommu.h> #include <linux/of.h> @@ -11,6 +12,7 @@ extern int of_get_dma_window(struct device_node *dn, const char *prefix, size_t *size); extern void of_iommu_init(void); +extern struct iommu_ops *of_iommu_configure(struct device *dev); #else @@ -22,6 +24,10 @@ static inline int of_get_dma_window(struct device_node *dn, const char *prefix, } static inline void of_iommu_init(void) { } +static inline struct iommu_ops *of_iommu_configure(struct device *dev) +{ + return NULL; +} #endif /* CONFIG_OF_IOMMU */ |