diff options
| author | Will Deacon <will.deacon@arm.com> | 2014-08-27 16:15:59 +0100 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2015-11-07 21:52:46 +0800 |
| commit | 8588e4727dc1a47cbac31710b81e6e82b490328c (patch) | |
| tree | 76d7731698cf0ba6c53b227e70db44e338aee081 /include | |
| parent | de1cf2e59c396d36e14ba52d44e199446acd13eb (diff) | |
iommu: add new iommu_ops callback for adding an OF device
This patch adds a new function to the iommu_ops structure to allow an
OF device to be added to a specific IOMMU instance using the recently
merged generic devicetree binding for IOMMUs. The callback (of_xlate)
takes a struct device representing the master and an of_phandle_args
representing the IOMMU and the correspondong IDs for the new master.
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>
(cherry picked from commit d0f60a44f5120a8e1c48995285c7d8d1e4915b35)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/iommu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 7b83f9f8e11d..415c7613d02c 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -21,6 +21,7 @@ #include <linux/errno.h> #include <linux/err.h> +#include <linux/of.h> #include <linux/types.h> #include <trace/events/iommu.h> @@ -102,6 +103,7 @@ enum iommu_attr { * @remove_device: remove device from iommu grouping * @domain_get_attr: Query domain attributes * @domain_set_attr: Change domain attributes + * @of_xlate: add OF master IDs to iommu grouping * @pgsize_bitmap: bitmap of supported page sizes * @priv: per-instance data private to the iommu driver */ @@ -133,6 +135,10 @@ struct iommu_ops { /* Get the numer of window per domain */ u32 (*domain_get_windows)(struct iommu_domain *domain); +#ifdef CONFIG_OF_IOMMU + int (*of_xlate)(struct device *dev, struct of_phandle_args *args); +#endif + unsigned long pgsize_bitmap; void *priv; }; |